TW201236883A - Print head assembly for use in fused deposition modeling system - Google Patents

Abstract

A print head assembly (43) that includes a print head carriage (18) and multiple, replaceable print heads (36, 42) that are configured to be removably retained in receptacles (46, 48) of the print head carriage (18).

Description

201236883 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to an additive manufacturing system for constructing two-dimensional (3D) parts by layer-based additive manufacturing techniques. In particular, the present invention relates to a printhead assembly for use in a fused deposition forming system. [Prior Art] A fused deposition forming system is used to construct a model by squeezing a flowable part material to construct a S 3D part layer by layer or a digital representation of a D part. The part material is extruded through the extrusion spigot carried by the extrusion head and the part material is deposited as a sequence of lines on a substrate in the x-y plane. The extruded part material is melted to the previously deposited material and solidified as the temperature drops. The position of the extrusion head relative to the substrate is then incremented along the z-axis (perpendicular to the x_y plane) and then the process is repeated to form a 3D part similar to the digit representation. The movement of the extrusion head relative to the substrate is performed under computer control based on the construction data representing the 3D part. The construction data was obtained by initially slicing the digital representation of the 30 parts into a plurality of horizontal slice layers. Next, the host electrode creates a build path for each slice layer to deposit a molding material route to form the fastener component. In the manufacture of a 3D part by depositing a layer of molding material, the support layer or support structure is typically constructed below the overhanging portion or in the cavity of the article being constructed, the support layer or the support being configured by the part material itself support. The support structure can be constructed using the same 201236883 deposition technique as the deposition technique of the deposited part material (4). The host computer produces an additional geometric shape that acts as a support structure for the overhanging segments or free space segments of the 3D part being formed. The support material is then deposited from the second nozzle in accordance with the resulting geometry during the build process. The support material adheres to the molding material during manufacture and the support material can be removed from the finished 3D part upon completion of the build process. SUMMARY OF THE INVENTION One aspect of the present invention is directed to a printhead assembly for use in a fused deposition molding system. The printhead assembly includes a carriage frame configured to A holder mechanism of the fused deposition molding system is retained, and a socket is supported from the bracket frame such that the socket is movable relative to the bracket frame along at least one axis, wherein the socket is configured to receive a removable The printhead is held securely in a manner that prevents the held printhead from moving relative to the socket during operation of the fused deposition molding system. Another aspect of the invention relates to a printhead assembly for use in a fused deposition forming system, wherein the printhead assembly includes a bracket and a frame is configured to be melted by the melt One of the deposition molding systems maintains the support mechanism. The print head assembly also includes a socket having a dirt seat P knife and a cover. The base portion is supported from the cradle frame and configured to receive a removable print head, wherein the base portion includes an alignment feature, the edge alignment feature configured to align with one of the received print heads The alignment feature 4 is merged. The cover is configured to close 201236883 against the base portion to at least partially retain the received printhead within the socket. [Embodiment] The present invention relates to a print head assembly for use in a fused deposition molding system. The printhead assembly includes a movable printhead carriage and a plurality of replaceable printheads. The printheads are configured to be releasably held by the printhead carriage as discussed below. The printhead carriage includes a carriage frame and at least one (and more desirably two or more) printhead or printhead receptacles configured to Store and hold the removable print head. The socket can be supported by the bracket frame in such a manner as to prevent or otherwise restrict movement of the socket relative to the carriage frame along an axis or plane (e.g., horizontal). In one embodiment, the socket is also supported by the cradle frame in a manner that allows the socket to move relative to the cradle along at least one axis (e.g., along a vertical axis) to provide a single degree of freedom of movement. This ‧ 卜 socket is desirably misrepresented by this fine I (η π ., . . .......

Built 3D parts and support structure.

The chamber 12, the pressure plate 14, the support 16, and the tongue are made by Stratasys (Eden as shown in the 'System 10 includes the construction of the print head carriage 18 and the consumable total 201236883 to 20 and 22. The construction chamber 12 is closed with a pressure plate 14 The environment 'platen Μ is used for part consumable materials and the consumable expendable material (eg, thermoplastic material) to construct a 3 〇 part or model 24 and corresponding fulcrum structure 26. The construction chamber 12 is desirably heated to reduce The rate at which the part and support material solidify after extrusion and deposition (e.g., in a reduced deformation and generation embodiment) may omit the build chamber 12 and/or replace the build chamber 12 with a different type of build environment. In other words, the buckle 24 and the support structure 26 can be constructed in a built-up loop that is open to surrounding conditions or can be closed by an alternative structure (eg, a flexible curtain). The build environment can also be heated in a variety of ways (eg, , which is heated by the heated stepped air, the heating lamp and the like. The pressure plate 14 is a bracket movable platform (the 3D part 24 and the branch structure 26 are built on the platform) and is controlled based on computer operation The signal provided by the controller (referred to as control 128) moves along the vertical z-axis. The controller "dead- or multiple processor-based controllers, the one or more processing-based controllers can be communicated via communication line 3G The communication chamber 12, platen, bracket 16 and bracket 18 are in communication. Although illustrated as a single signal line, the communication line 3A may include - or multiple signal lines, (9) while allowing various components of the controller 28 system 10 (such as The chamber Η, the platen Η, the branch 16 and the bracket 18) are constructed for communication. Further, although illustrated as being external to the system 1, the controller 28 and the communication line 3〇 may be internal components of the system 1。. 16 is a rail bracket mechanism configured to build on the chamber 丨2 based on the k number provided by the control 201236883 (via the communication line 3 〇)

The carriage 18 is moved on the horizontal X-y plane. The horizontal X-y plane is the + plane through which the X and y are bounded by the I, where the x, y, and z axes are orthogonal to each other. In an alternate seat embodiment, the platen 14 can be configured to move over the busy chamber X-y plane of the build chamber 1 and the carriage 18 can be configured to move along the z-axis. Other similar configurations may be used to move one or both of the pressure plate 14 and the bracket 18 relative to each other. &gt; In the illustrated embodiment, the front side of the bracket 18 faces the rear side of the system 10 when mounted in the bracket 16. For ease of discussion, the following disclosure is made with reference to the orientation of the χ_" Cartesian coordinate system based on the orientation of the carriage summer 8 and its corresponding printhead assembly. However, it may be in a variety of different orientations and/or The print head assembly of the present invention is positioned and operated in a coordinate system. The carriage 18 is supported by a bracket 16 for constructing parts on the pressure plate 14 in a layer-by-layer manner based on signals provided from the controller 28 (eg, a 3D part 24) and a corresponding support structure (eg, support structure 26). In the illustrated embodiment, the bracket 18 is retained within the fairing 3, the fairing 31 extending laterally around the bracket 18 to protect the bracket The frame 18 also allows the user to access the housing of the bracket 18 (eg, a plastic housing and/or a metal housing). As discussed below, the bracket 18 is configured to receive one or more removable print heads. , wherein the print heads are each configured to receive and melt a continuous portion of the part material filaments and the support material filaments. 0 Consumable assemblies 20 and 2 2 are removable and replaceable containers. The device is configured to The supply of part materials and building material for constructing 3D parts (eg, 祀 part 24) and ## structures (eg, support structure %) is maintained and can be loaded into racks 20a and 22a of system ig, respectively. In the illustrated embodiment, the consumable assembly 2 includes a container portion 32, a conduit 34, and a printhead 36, wherein the container portion &amp; can be: mounted within the frame 20a and the print head 36 inserted or otherwise loaded Loaded into the cradle 18. The conduit 34 interconnects the container portion 32 with the printhead 36 to supply a continuous segment of the part material filament from the container portion 32 to the printhead 36. Accordingly, the consumable assembly 22 includes a container. Portion 38, conduit 4 and printhead 42' wherein container portion 38 can be mounted within the frame and printhead 42 is inserted or otherwise loaded into carriage 18 adjacent printhead 36. conduit 40 enables The container portion 38 is interconnected with the print head 42 to supply successive segments of the support material filaments from the container portion 38 to the print 42. In the illustrated example, 1 is used in the consumable assembly 2() and 22 includes... US Patent Application for public = Chest and chest 3172 and International Publications No. 9/Qing% The disclosures are hereby incorporated by reference in their entirety to the extent that they do not the subject of the present disclosure. The print heads 36 and 42 disclosed in the reference can be used as a consumable assembly and as a sub-assembly. When loading the container portions 32 and 38 to the frames 20a and 22a, respectively, the print heads 36 and 4? η amine κι and 42 are manipulated and the print heads 36 and 42 are loaded into the cradle 18. 201236883 Bracket 1 8 and print heads 3 6 and 4, 5 are collectively referred to herein as print head assembly 43. Because a, e is received, so the print head 36 is inserted or otherwise loaded to Tomu! After 8 , a continuous portion of the part material (e.g., a piece of material material filament) can be fed from the jaw portion 32 to the print head 36 via a conduit. Similarly, after the print head 42 is inserted or otherwise loaded into the cradle 18, a continuous portion of the slab material (eg, 'support material filaments') can be fed from the container portion 38 via the conduit. To the print head 42. When the part material and the support material are selectively fed to the print heads 36 and 42, the bracket 16 can move the carriage i 8 (and the held print head) back and forth over the horizontal x_y, 'face above the build chamber 12. 3 6 and). Printing a continuous portion of the material contained in the 36, thereby allowing the molten part material to be extruded and deposited onto the platen 14 to construct a 3β part, similarly, the print head 42 (four) the continuous portion of the support material, which is allowed The molten support material is extruded and deposited onto the platen crucible to construct the support structure 26. The extruded part material and the extruded support material are deposited onto the platen 14 to construct the 3D part 24 and the support structure 26[beta] in a layer-based manner using fused deposition techniques to desirably deposit the support structure 26 to provide along the x-axis A vertical support for the overhanging region of the layer of 3D parts 24. After the build operation is completed, the resulting 3D part 24 and support structure 26 can be removed from the build chamber 12 and the support structure 26 can be removed from the 3β part 24. The 3D part 23 can then undergo one or more additional post-processing steps, such as disclosed in U.S. Patent Application No. 9 201236883, the disclosure of which is incorporated herein by reference. Surface treatment program. The following discussion is made with reference to the consumable assemblies 20 and 22 including the print heads (i.e., print heads 36 and 42) as subassemblies of the consumable assembly. However, in an alternative embodiment Print heads % and 42 may be removable print heads separate from container portions 32 and 38 and/or conduits 34 and 40. In these embodiments, suitable assemblies for consumable assemblies and 22 ( For example, a shaft string container includes: a suitable assembly disclosed in U.S. Patent Application Publication No. 2/1/283, 172, 172, and International Publication No. WO No. 2009/088995, and a suitable disclosure in the following patents. </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> <RTIgt; No. 0096489. Figures 2 through 9 illustrate a printhead assembly 43, which shows a carriage 18 for use with printheads % and 42. Bracket 18 and printheads 36 and 42 are desirably lightweight components. The lightweight component used for the printhead assembly 43 = reduced the support 16 (shown in Figure i) at the level x_y The mass required to move back and forth in the plane. This reduced quality correspondingly reduces the inertial forces generated by moving the printhead assembly 43 back and forth over the horizontal plane (eg, in the raster pattern), thereby improving The response time of the bracket 16 is controlled and also reduces wear on the sub-assembly of the bracket 16. As shown in Figure 2, the bracket 18 includes a bracket frame 44, a print head barrel or a print head socket 46 and 48 'control board 5 〇, voice coil mechanism S2 and 54 (bit 10 201236883 on socket 46 and below) and cooling units 56 and 58. 乜added as a rigid frame 槿钍 bracket frame 44 member, which can be operated by a plurality of buckles 59) Tight week $ ± A (for example, the screw is made of - or more ^ 6 (shown in Figure 1). The truss frame can be socketed" material and / or plastic material molded or circumvented. Socket 46 and 』 The components, and also the printheads 36 and 42 respectively, can be made of - or a variety of metal materials and / or plastic materials molded. The print head 36 includes a bell assembly 6 〇 and a liquefier chestnut Total: 2' in which the rear portion of the raft assembly 60 is retained in the socket 46 and the liquefied state pump assembly 62 is self-rafting assembly 6 〇 The print head 42 includes a bell assembly 64 and a liquefier millet assembly 66, wherein the S-type assembly 64 is partially retained within the socket (9) and the liquefier pump assembly 66 is self-propelled. The portion before the 64 is extended downward. The liquefier manifolds 62 and 66 include the tips 62a and 66a and the outlet vents 62b and 66b, respectively, and may include features disclosed in the following patent applications: Swanson et al. For use in squeezing-based additive is, ,, first liquefier assembly (LiqUefier Assembiy F〇r Use In

Extrusion-Based Additive Manufacturing Systems, Inc., U.S. Patent Application Serial No. 12/888,087. In the illustrated embodiment, the print heads 36 and 42 are mirror images of one another. This situation reduces the risk of inserting the wrong printhead into a given outlet. In contrast, in the illustrated embodiment, the sockets 46 and 48 are identical or substantially identical 'allowing the same mold to be used to fabricate the components of both sockets 46 and 48. In an alternative embodiment, print heads 3 6 and 4 2 and sockets 4 6 and 48 may exhibit different designs such that print heads 36 and 42 may be received by sockets 201236883 46 and 48 as discussed below. And keep. The socket 46 includes a base portion 68 and a cover 7〇, wherein the cover 7 is hingedly connected to the rear portion 'on the base portion 68 by a chain link 72 to allow the cover 70 to open relative to the base portion 68. And closed. Before being used in System 1 〇 (shown in Figure !), the 总-type assembly 60 (of the print head 3 6) can be inserted or otherwise loaded into the base portion "medium" and the cover 70 can be closed The print head 36 is secured to the socket 46 above the rear portion of the jaw assembly 6 . The cover 70 includes a lock clip 74 and a pinch actuator 76. When abutting the base portion 08 (see Figure 2) When shown), the lock clip 74 engages the base portion 68 to prevent the cover 70 from being inadvertently opened. When the user wishes to open the cover 70, the user can squeeze the pinch actuator 76, the pinch actuator 76 disengages the locking clip 74 from the base portion 68, thereby allowing the user to then open the cover 70. The socket 48 includes a base portion 78 and a cover 8〇, wherein the cover 8 is hingedly by the hinge connector 82 Attached to the rear section 'over the base portion 78 to allow the cover 80 to open and close relative to the base portion 78. Prior to use in the system 10, the cymbal assembly 64 (of the print head 42) can be inserted or otherwise The manner is loaded into the base portion 78, and the cover 8〇 can be closed over the rear portion of the jaw assembly 64 to secure the print head 42 to Seat 48. Cover 80 includes lock clip 84 and pinch actuator 86. When clamped against base portion 78 (shown in Figure 2), lock clip 84 is discussed above with respect to lock clip 74. In the same manner, the base portion 78 is engaged to prevent the 12 201236883 cover 80 from being inadvertently opened. When the user wishes to open the cover 8 使用者, the user can squeeze the pinch actuator 86, and the pinch actuation _ % The lock clip "disc seat portion 78 is disengaged, thereby allowing the user to then open the cover ^. The sockets 46 and 48 desirably prevent the print heads % and 42 from being displaced back and forth within the sockets 46 and 48 when the cover and 8 are closed. The system is configured to construct a 3D part 24 with a high resolution feature and a support structure %. To achieve these high resolution features, the print heads % and 42 are desirably locked to the carriage frame 44 in a manner that prevents the print heads ^ and ^ from being unintentionally relative to the carriage frame 44 in the horizontal χ-y plane. Shift. Otherwise, even a small amount of unintentional horizontal shifting of any of the print heads 36 and 42 may result in a wrong route in the formed layer of the 3D part 24 and the wrap structure 26. In current commercial fused deposition forming systems (such as those available from the company (Eden Prairie' MN)), the extrusion head or printing (4) is fastened to the movable bracket bracket using screws or other fasteners. These printheads are usually not unloaded from the movable carriage bracket except for maintenance, cleaning or other similar purposes. In contrast, it is intended to easily remove and replace the print heads 36 and 42 when the consumable material is depleted. Thus, as discussed below, the cradle 18 is configured to receive a plurality of replaceable print heads 42 and to securely lock the accommodating print heads 36 and 42 to prevent the accommodating print heads 36 and 42 from being horizontal xy Unintentional displacement in the plane relative to the carriage frame 44. In particular, when the covers 70 and 8 are closed, the socket village = 48 securely locks the print heads 36 and 42, which prevents the print heads % and 42 from moving relative to the sockets 46 and 48 in any direction. 13 201236883 The sockets 46 and 48 themselves are suspended from the bracket frame 44 in a manner that allows the sockets 46 and 48 (and the print heads 36 and 42) to be controlled relative to the carriage frame 44 via the voice coil mechanisms 52 and 54 along the vertical z-axis. Movement also prevents unintentional movement of the sockets 46 and 48 (and the print heads 36 and 42) relative to the carriage frame 44 in the horizontal xy plane. For example, the sockets 46 and 48 can be suspended from the bracket frame 44 by the upper flex portion 88 after the upper flex portion 88 is located behind the sockets 46 and 48, as described herein. A phrase such as "preventing the movement or shift of the print head" and similar phrases is intended to cover a small amount of movement or shift as understood by those skilled in the art such that the movement or displacement of the print head is not substantially Affects the resolution of 3D parts or support structures. The voice coil mechanisms 52 and 54 are tuck mechanism, the toggle mechanism being configured to controllably move the sockets 46 and 48 up and down (and the print head 36) in a vertical z-axis independently of each other. 42). As discussed in U.S. Patent No. 7,625,20, the entire disclosure of which is incorporated herein by reference in its entirety, U.S. Pat. Switch between. In one embodiment, as discussed below, the voice coil mechanisms 52 and 54 each include one or more magnet sets disposed between magnet plates (not shown in FIG. 2) (not shown in FIG. 2). Where the (equal) magnet set is configured to generate a magnetic field. The voice coil mechanisms 52 and 54 can each also include a voice coil (not shown in FIG. 2). The voice coil is disposed within the generated magnetic field and is configured to be based on the intensity and direction of the current induced via the voice coil. The generated magnetic field moves. As discussed below, the movement of the voice coil relative to the generated magnetic field may be 14 201236883 46 or 48 and the received print head 36 or 42 relative to the carriage frame e. at - or a plurality of raised and lowered heights Columns between the columns are P: 36 and 42. The voice coil mechanisms 52 and 54 may also include electrical connections (e.g., electrical, not shown) to the face 89 of the control board 5 to receive electrical power from the control board 50 for inducing current through the voice coil. The reverse side is a printed circuit board or other similar #, 1 device fastened to the rear side of the carriage frame 44. As shown, the control board 50 includes interfaces 90 and 91, -. The boundary Φ 90 can also be connected to the communication line 30 (not shown in FIG. 1), power supply, and/or within the system 10 (not shown) by using electrical windings and/or wireless connectors (not shown). Other electrical defects. For example, interface 90 can relay electrical power from system 1 to print heads % and 42, control board 50, voice coil mechanisms 52 and 54 (via interface 89), and cooling units % and 58. As discussed below, the interface 9 can also allow the controller 28 (not shown in Figure 1) to direct the operation of the print heads 36 and 42, the voice coil mechanisms 52 and 54 and the cooling units 56 and 58. The face 91 is an electrical interface that allows electrical power to be passed from the control board 5 to the cold sections 56 and 58 via additional electrical connections (e.g., power, not shown). As also discussed below, the control board can include an or one position encoder for tracking or otherwise monitoring the print heads 36 and 42 relative to the carriage 18 and the control panel 50. Position (for example, vertical position). The cold sections το 56 and 58 are fan-based units that are fastened to the bracket 16 and/or the bracket frame 44 (e.g., by screws 92). Cooling units 56 and 58 are configured to generate an air flow and direct airflow into print heads 36 and 42. 15 201236883 For example, the cooling unit 56 can draw air into the jaw assembly 60 of the printhead 36, in which the air is then directed down through the liquefier pump assembly 62 and guided Outlet outlet vent 6 let. Similarly, the 'cooling unit 58 can draw air into the jaw assembly of the print head 42. In the jaw assembly 64, the air is then directed downward through the liquefier pump assembly 66 and is directed out of the outlet venting. Mouth 66b. The forced air flow cools the internal components of the print heads 36 and 42 and prevents premature melting of the part material and the building material. In alternative embodiments, other types of cooling units may be used for cooling units 56 and 58, which may be fan based units or non-fan based units (e.g., based on a refrigeration 2 unit). The grass covers 7 and 8 of the sockets 46 and 48 also include an electronic interface 94 and a &apos; electronic interface 94A 96 located on the outer surface of the cover 7A and 8〇 adjacent to the rear side of the bracket 18. As shown in FIG. 3, the control board 5A also includes interfaces 98 and 100, which are configured to be electrically connected (eg, 'cable, not shown) to the electronic interface % and %, respectively. This configuration allows the control panel 5 to relay electrical power and communication information to the print head 36... relaying electrical power and communication information to the print heads 36 and 42 and the control board 5 itself. The control panel 5 can be fastened to the bracket frame by screws or other similar fasteners. In the preferred embodiment, the bracket 18 also includes an upper flexure 88 that is a member of the upper flex portion 88A. If it is a flexible metal or plastic that is tightly attached to the bracket frame 44, as discussed below, the upper flexure 88 and the lower flexure (not shown in Figure 3, 忪, 丁1, 禾中) The sockets 46 and 48 are supported in the following manner: the insertion 16 201236883 print head 36 and the lower flexible seats 46 and 48 (and the vertical movement range held by the upper flex portion 8 8 and 42) are prevented from moving horizontally while the curved portion is Flexing allows for limited as shown in Figure 4, the upper pedestal 挽 曲 88 is fastened by screws i 〇 4a to l 〇 4c or other similar fasteners? U to bracket frame 44. In addition to flexing, this coupling

The upper deflection unit 牟R I 心朱88 is prevented from moving relative to the bracket frame 44. The upper flexure suspension 88 is divided into flexure segments 106 and 1〇8 by the screws 104a to 104c, and the bowl 掊Α', the flexure piece ^1〇6 are located at the screws 1 〇 4a and 104b Between, and the deflection H i; u ', the sheet '0 108 is located between the screws l〇4b and l〇4c. The flexure segments 106 and ι〇8Α·ήΑ·ά:»: _ are each configured to flex outwardly, downwardly flex, or combine upward and downward, independently of each other, relative to the bracket frame 44. The base portion 68 of the socket 46 includes a tongue member 110 extending rearwardly from the body of the base portion 68 and secured to the flexure segment 1G6 by screws 112 or other similar fasteners. The screw 112 will open the socket 46_ to the flexure piece ^1 〇6'. This situation allows the socket 46 and the print head 36 to be flexed by the flexure piece slave 106 (and the lower flexure portion not shown in Figure 4). The track is busy; the carriage busy 44 moves up and down (via the voice coil mechanism 52, shown in Figures 2 and 3). This engagement also prevents lateral movement of the socket 46 and the print head 36 relative to the carriage frame 44 in the horizontal x-y plane and prevents roll, pitch and yaw movement. The base portion 78 of the socket 48 includes a tongue member extending rearwardly from the body of the base portion 78! 14, and fastened to the flexure segment 108 by a screw i 16 or other similar fastener. The screw 116 couples the socket 48 to the flexure segment 108'. This allows the socket 48 and the printhead 42 to be flexed by the flexure piece 17 201236883 segment 108 (and the lower flexure, not shown in Figure 4) The music moves up and down relative to the carriage frame 44 (via the voice coil mechanism 54, shown in Figures 2 and 3). This coupling also prevents lateral movement of the socket 48 and print head 42 relative to the carriage frame 44 in the horizontal χ-y plane, as well as preventing roll movement 'pitch movement and yaw movement. During assembly of the bracket 18, the upper flexure can be..., as shown in Figure 4, and the screws _ to;:c can be inserted through the open upper flexure 88 and into the cradle frame 44 to The upper flexure 88 is secured to the bracket frame 44. The tongue members u〇&amp;4 can be lightly attached to the flex segments 1〇6 and 1〇8 by screws 112 and 116 to retain the base portions 68 and 78 to the upper flexure 88. ... ~ ~ Π々 处 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The lower part extends. P minute 118 extends below base portion 68 and holds a portion of voice coil mechanism 52 (e.g., voice coil 'not shown in Figure 5). Similarly, the lower extension portion 120 extends below the base portion 78 and holds a portion of the voice coil mechanism 54 (eg, a voice coil, not shown in FIG. 5 as shown in the figure, as discussed below, the control panel The % front side includes a sensor array 1 2 2 a 1 κ _ 3 and l22b, a sensor array η, and an optical encoder configured to measure the position of the socket 46 and the position of the han (eg, vertical position) The subassembly of the assembly. The bracket 18 also includes a lower deflection _ -r, ^ 1 24 . In the non-embodied embodiment, the lower jaw flexure 124 has a shape of η yy $ 4 . The curved portion 124 is a flexible metal or plastic member disposed between the bottom surface of the base portion 68 and 78 and the bottom portion 18 201236883 of the bracket frame 44. As shown in the circle 6, the lower flexure portion 124 includes a central segment m extending along the y-axis, and arms 1283 to 128d, wherein the arms and (iv) are the ankle arms extending from the front end of the central segment 126 in opposite directions along the X-axis: and the arms and 128d are at the edge x The opposite direction of the axis extends from the rear end of the central segment 1 26 to the rear arm. The % segment 126 is included in the middle Fragment u imaginary Μ π μ and i26 at the end and rear end: openings 130 and 132. Openings 13 〇 and 132 are used to fasten the central segment 126 by means of fasteners 2, 2 snails not shown) To the bracket frame: to the attachment point shown in Figure 5. The arm to _ minute' includes the opening mu 134d and the pin slot coffee to the coffee. The lower armor 124 has the ability to allow any end face to be equipped with △ 引It is a symmetrical geometry. This allows the lower koji m to be fastened to the base portion 68 and the yoke 44 without the consideration of the lower slanting of the lower slanting plant A 丨 1μ. The ease of the frame 18. As shown in Fig. 7, the lower flex portion 124 is fastened to the base portion at the arm 128a fastening 128d. In detail, the alignment pin of the &quot;6a is used. By "the front portion of the seat portion 68 is extended by the other similar fasteners in the arm 128a", the screw 140 or the Kenner 128a is fastened to the temple frame by extending through the pin slot (10). The alignment pin is widened accordingly. The portion 78 has a small soap pin M2 that aligns the arm 128b with the base 1. By means of a screw 144 or other similar buckle that extends through the opening of the arm 12 Sub-78. 4 1 Tighten the I 128b to the base 19 201236883 Align the arm coffee with the base P 77 68 by extending the alignment lock i46 through the pin slot 13 (in Figure 7 The ground is covered by the bracket frame 44. The arm coffee is fastened to the base portion 68β by a screw 148 or other similar fastener extending through the opening in the arm me by extending through the pin slot 136d. The alignment pin 150 of the eclipse 1Crt 0 aligns the arm 128d with the subsequent section of the base portion 78 (the two are partially obscured by the cradle frame 44 in Figure 7). By extending the screw 152 through the opening 134d in the hair + fangs # 128d

Or other similar fasteners secure the arm 128d to the base portion I. Further, the lower flexure can be made at the bottom opening 154UiMb of the bracket frame 44 by screws and/or locks (not shown) or other similar fasteners. 124 is aligned with the bracket frame 44 and secures the lower flexure m to the bracket frame. The opening ^ and 1541 are extended along the x-axis and aligned with the openings 130 and 132 of the lower flexure (2). ★ As such, during assembly of the bracket 18, the lower flexure 124 can be positioned along the bracket frame 44, as shown in FIG. 7, and the screws and/or pins can be inserted through the bracket frame 44. Opening the opening and (10) and through the openings 13 and 132 of the lower flexure m to secure the central segment m (shown above in Figure 6) to the bracket frame... The base portions 68 and 78 can be positioned to The bracket frame-up and the arms of the lower bellows 124 can be fastened to the base portions 68 and 78. In this case, the lower flex 24 is fastened between the bracket frame 44 and the base portions 68 and 78, thereby being framed from the bracket. Knife Support Base Portions 68 and 78» As discussed above, the upper flexure "" (shown above in Figures 3 and 4) @ further supports the base portion 78 〇 20 from the bracket "4" 201236883 Arms 1 28a through 128d are each configured to flex upwardly, downwardly, or combine upwardly and downwardly with respect to bracket frame 44 along a vertical z-axis, with arms 128a and 128c being secured thereto (fastened to base portion 68) ) can flex together and the arms 128b and 128d (fastened to the base portion 78) can flex together. Thus the 'arms 128a and 128c (along with the flexures 106 of the upper flexure 88 as shown in FIG. 4) allow the socket 46 and the print head 36 to move up and down relative to the carriage frame 44 (via the voice coil) Agency 52). These couplings also prevent movement of the socket 46 and printhead 36 relative to the carriage frame 44 in the horizontal x_y plane, as well as preventing roll, pitch and yaw movements. Similarly, arms 1281) and 128d (along with the flex segments 1〇8 of the upper flexure 88, shown in Figure 4) allow the socket and printhead to "move up and down relative to the carriage frame 44 (via The voice coil mechanism 54). These couplings also prevent the socket 48 and the print head 42 from being in the horizontal x_y plane relative to the (4) of the bracket 44, and preventing rolling movement, material movement and partial movement. Sockets 46 and 48 provide one of three connection points to the flexure (i.e., 'upper flexure 88 and lower flexure 124') to illustrate 'but (four) 18 or may include additional flexures and/or additional attachment points to The advancement prevents the sockets 46 and 48 from moving relative to the carriage frame 44 in a horizontal xy plane. For example, the bracket 18 may alternatively include one for each of the sockets and an upper deflection and a pair of lower deflections a portion that operatively fastens each of the upper flexures and the lower flexures to the bracket frame 44. This situation provides four attachment points per socket, thereby preventing horizontal movement while allowing for Moved by voice coil mechanism 52 and "controlled vertical 21 201236883. In an alternative embodiment, one or both of the upper flex P 88 and the lower flexure 124 can be replaced with an alternative mechanism configured to base the base portions 68 and 78 from the bracket The frame 44 is suspended while also preventing or restricting movement of the base portions 68 and 78 relative to the pallet 44 in the horizontal xy plane (and preventing rolling, pitching, and yaw movement). For example, the upper flexure 88 can be replaced with a rigid member, and the more rigid member pivotally interconnects the base portions 68 and 78 with the bracket frame 44 in a lap-on or lever-based manner. In this embodiment t, the rigid member can be pivotally coupled to the bracket frame at the location of the screw (shown in Figure 4), such as by pin engagement, and then at the screws 112 and 116 (Fig. 4 The tongue members m and 114 of the base portions 68 and 78 are fastened to the rigid member (e.g., pivotally fastened) at the position shown. Thus, the voice coil mechanism 52 can extend the socket 46 and the print head 36' as the voice coil mechanism 54 lowers the toggle socket 48 and the print head 42. This condition causes the hard f member to pivot around the rigid member and the bracket frame 44. The swivel joint pivots. This pivoting action allows the print heads % and 42 to move vertically. The same also prevents or limits the movement of the print heads % and C in the horizontal x-y plane. 44' and are connected to the base portion 68 114, respectively. This configuration allows the print head 3 6 and in still other alternative embodiments, the pair of independent rigid members of the bracket are pivotally coupled to the bracket frame. In other alternative embodiments, the rigid member can be used independently The rigid member replacement and 78 tongue members 110 and 42 are independent of each other to the toggle. The 1 8 may include a vertical linear bearing 22 201236883 to prevent or limit the movement of the base portions 68 and 78 relative to the carriage frame 44 while also allowing vertical movement. As indicated by the steps, the bracket frame 44 is also included in the base portion pair opening 156. Only: the opening Μ and the second middle portion below the base portion 78, the opening 154 and the single opening 156 can be seen in the first opening 154 of FIG. 7 and the 156 is hidden in the arm 128c of the lower flex portion 124. under. As discussed below, 'openings 154 and 156 can be connected (10) like fasteners (not shown) for fastening bracket frame 44 staples 59 to bracket 1 "shown in Figure 1", wherein the screws can pass through the base Portions 68 and 78 are inserted into openings 154 and 156. Figure 8 illustrates the firing of sockets 46 and 48 by θ-ring mechanisms 52 and 54 using a gusset technique. The mechanism 52 includes a front panel 158 and the voice coil mechanism 54 includes a vvc; in the illustrated embodiment, the front panel 15 WO is provided in a single-small edge, the single panel extending across the voice coil mechanism ) 2 & 5 4 ] Iff &gt; f mesh, 1 n # fine is fastened to the bracket frame 44 by screws 161 or other similar fasteners. As discussed below, the front plates 158 and 160 are used for retention. The ferromagnetic plate of the magnet assembly 52&amp;S4-, v (not shown in Fig. 8). In the second example shown in Fig. 8, the print head 42 and the socket 48 are positioned vertically. The lower axis is lower than the height of the print head 36 and the socket 46. This case is illustrated by the relative heights of the sharp points 62a and 66a, and the tip 62a of the 位于 is located at the ancient time - 137 The degree 162 and the tip 66a are at the descending height 164. Thus the J print head 42 is in an active state for squeezing the support material and the print is qra '36 in a passive state, in this passive state column 23 201236883 print head 3 6 does not squeeze the material of the part. The appropriate distance between the two (called meters, which is particularly suitable for the distance of 3. 〇 mm, and which is more special. 3 mm to about 2.0 mm. Height 162 and the descending height ι64 distance 165) includes a range of at least about 毫5 millimeters to 165. The range of 165 millimeters to about a suitable distance 165 is about 1 due to expected changes known to those skilled in the art (eg, amounts) The term "about" and "substantial" are used herein to refer to measurable values and ranges. The raised height relative to the tip 66a prevents (above) the upper tip 62a from contacting the 3D part 24 (shown in Figure 1) as the carriage 18 moves back and forth over the horizontal xy plane of the building chamber 12 or The fulcrum structure 26 (the layer has been formed as shown in Fig. 1. Fig. 9 is a rear view of the print head assembly 43, which illustrates the simultaneous printing of the print head 36 from the raised sorghum 162 to the lower toggle and will The print head 42 is raised from the lowered height 164 to the toggle, as illustrated by arrows 16 仏 and 16 。. When the socket 48 and the print head 42 are in a descending active state (as shown in Figure 8 above), the upper deflection The flexure segment 108 of the portion 88 and the lower flexure. The arms 12 8b and I28d of P 124 (shown above in Figures 5 to 7) /. The vertical z-axis is deflected downward. Accordingly, when the socket 46 and When the print head rest is in the elevated passive state, the flexure segments 1〇6 of the upper flexure 88 and the arms 128a and 128c (shown in Figures 5-7) of the lower flexure 124 are undeflected and The upper flex portion 88 and the lower flex portion 124 thus limit the sockets 46 and 48 and the print heads % and 42 in the upward and downward directions of the substantially straight z-axis. Movement relative to the carriage frame μ 24 201236883. Upon completion of a given layer of support structure 26, controller 28 (shown in Figure i) may instruct voice coil mechanism 54 to position socket 48 and print head 42 along the vertical z-axis The self-reducing height 164 is raised upward to a raised height 162 (or other suitable elevated height along the vertical z-axis) as illustrated by arrow 16 。. The flexure segment 108 and the lower flexure 124 of the upper flexure 88 The arms 128b and 128d are thus flexed upwardly together with the socket 48 and the print head 42 to achieve an undeflected state and a horizontal state. The controller 28 can also indicate that the voice coil mechanism 52 will position the socket 46 and the print head 36 / alpha vertical z-axis. From the raised height 162 down to a descending height 164 (or other suitable descending height along the vertical z-axis), as illustrated by arrows 166 &amp; the flexure segment 1 and the lower flexure j 24 of the upper flexure 88 The arms 128a and 128c are thus deflected downwardly along with the socket 46 and the print head 36. At this point in the build process, the print head 36 is in an active state for extruding the part material and the print head 42 is at Passive state in which the print head 42 does not squeeze the support member The raised height of the tip 66a relative to the tip 62a prevents the tip 66a from contacting the formed layer of the part or structure #26 when the carriage 18 is moved back and forth over the horizontal x_y plane above the build chamber to 12. Upon completion of the 3D part After a given layer of 24, controller 28 can then privately display voice coil mechanism 52 to raise socket 46 and printhead 36 up from the descending height 164 along the vertical z-axis to a raised height 162 (or other along the vertical z-axis). Suitable for promotion.) The controller 28 can also instruct the voice coil mechanism 54 25 201236883 to lower the socket 48 and the print head 42 from the raised height i62 to the descending height 164 along the vertical z-axis (or other suitable descending height along the vertical 2 axes. The print head 42 is set back to the descending active state and the print head 36 is set back to the elevated passive state. The print heads 36 and 42 can then continue to be active and passive by using the voice coil mechanism μ and 54. The toggles are interchangeable between states, wherein the movement of the print heads 36 and 42 is limited by the upper flexure 88 and the lower flexure m to a direction substantially along the vertical z-axis. In an alternative embodiment, The toggle processing procedure is performed by using a single-voice coil mechanism. For example, the print head 36 can be fixed at a given height (the voice coil mechanism 52 can be omitted) and the voice coil mechanism 54 can cause the print head 42 to Moving between the descending height and the raised height 'the descending height and the material height are respectively below and above the fixed height H: fixed height. Then the riser 14 can be raised and lowered during the toggle handling procedure to accommodate the print head 36 and 42 different heights. However, two voice coil mechanisms (ie, voice coils) The use of structures 52 and 54) allows the apex positions of the print heads 36 and 42 to be independently calibrated (i.e., at the large ends 62a and 66a), such as when it is desired to replace the print heads 26 and 42 during the build execution period. In one of the ways, as further shown in Fig. 9, the voice coil mechanism 52 includes a rear plate 167 and the voice coil mechanism 54 includes a rear plate 168. In the illustrated embodiment, the rear plate 167^168 is also provided in the form of a single plate. The single plate extends across the voice coil mechanism and the rear side of the body 54 and is fastened to the bracket frame 44 by screws 丨6 9 or other similar fasteners. The rear plates 167 and 168 are retained for use with the front plates 158 and 16〇. The ferromagnetic plates of the magnet assembly of the voice coil mechanisms 52 and 54 (not shown in Fig. 9 26 201236883). Figs. 10 to 12 illustrate the bracket frame 44 and the sockets 46 and 48, in which the print head 36 and 42. Control board 50 and cooling units % and 58. As shown in Figure 10, the base portion 68 of the socket 46 has dimensions configured to receive and retain portions of the queen assembly 60. Similarly, the base of the socket 48 The seat portion 78 has a size that is configured to receive and retain the portion of the Kunse assembly μ. Base portions 68 and 78 Vent openings 17 and 172 are provided, and vent openings 170 and 172 are openings through transverse walls of base portions 68 and 78. External ventilation π openings 17G and 172 are allowed to be supplied from cooling units 56 and 58 respectively (above The air guiding print heads 36 and 42 shown in Figures 2, 3, 5 and 8 include inner vent openings 1 70 and 1 72 facing each other to allow the base portions 68 and π to be identical. The single-base portion is allowed to be used for use as the base portion Μ and 7 曰 8. The cover 8 〇 is depicted in Figure 10 as being open. As shown, the cover 80 also includes a bridging member 173 that connects the parallel tabs of the pinch actuator %. The bridging member 173 is configured to be squeezed at the pinch actuator % thereby allowing the locking clip 84 to be disconnected from the base portion 78. The cover 8 also includes a circuit board 174 that is secured to the inner surface of the cover 80 by screws 176 or other similar fasteners. Circuit board 174 is a printed circuit board or other similar device that is coupled to electronic interface 96 (shown in Figures 2 through 4 and 9) and includes electrical contacts 178. As will be described hereinafter, the electrical contact i 78 is configured to interface with the printhead 42 when the printhead 42 is inserted into the base portion 27 201236883 78 and the cover 8 is closed. This situation allows electrical power and communication to be relayed to print head 42 and control board 5 and to relay electrical power and communication between print head 42 and control board 5 (via circuit board 1 74, electronic interface 96 and power) Contact 1 78). As discussed below, the cover 7A includes similar configurations for relaying electrical power and communication to the printhead 36 and control board 50 and relaying electrical power and communication between the printhead 36 and the control board 5A. In alternative embodiments, different types of circuits (such as 'one or more flexible circuits') may be used to replace the circuit board 174 and the corresponding circuit board of the cover 7". In these embodiments, the flexible circuit may Directly connected between the control board 50 and the covers 70 and 8 (i.e., the electronic interfaces 94 and 96 can be omitted). The covers 70 and 80 also include recessed lips 18 and 182 with the female lip 180 disposed between the locking clips 74 and the female lip 182 disposed between the locking clips 84. As illustrated above in Figures 2, 3 and 8, the concave lips 180 and 182 have been configured to "and insert" the base portion 6 8 and 7 with the print head 6 The mating portions 68 and 78 can each include - or a plurality of alignment features configured to align with the print head 36 and the "reciprocal alignment features" Hehe. For example, base portion 68 includes an alignment cone m' and base portion 78 includes an alignment cone 186. The alignment cones 184 and 186 are upwardly projecting, and the upward projections are coupled with reciprocating grooves (not shown in Fig. 10 or Fig. u) in the print heads 36 and 42 for providing three point alignment. The pedestal 68 also includes a slot 188 through which the screw (10) can extend to secure the lower flexure 124 (Fig. 5 to Fig. 28 201236883) to the base portion 68. Similarly, the base portion 78 also includes a slot 190 4 that can extend through the slot 9 to secure the lower portion 1 ^ to the base portion 78. When the field covers 70 and 80 are closed, the print heads 36 and 42 are pressed down into the base. The P-knives 68 and 78 are fully engaged with the alignment cones 184 and 186. In this case, the print heads 36 and 42 are fastened to the socket (10) and the core and prevent horizontal and vertical movement of the print heads 36 and 42 relative to the sockets 68 and 78, respectively (and prevention of rolling, pitching and yaw movements). In an alternative implementation, the print heads 36 & 42 may include alignment cones and the base portions 68 and 78 may include reciprocating grooves. As further shown in FIG. 10, the base portion 68 includes a pair of bottom plate openings 192 and The base portion &amp; 78 &amp; includes a pair of bottom plate openings σ 194 (only the single bottom plate opening 192 and the single bottom plate opening σ 194 are fully visible in the plan): the bottom plate opening 192*194 and the opening of the bracket frame 44 and 156 Alignment (shown in circle 7). Base plate openings 192 and 194 provide access points for accessing screws or other fasteners into openings (5) and 156 for flexing by upper flexure 88 and lower portion The bitter frame 24 secures the bracket frame 44 to the bracket 16 (shown above in Figure 1) after the bracket frame 44 supports the socket 46. This is allowed by allowing the bracket 18 to be mounted to the bracket 16 The bracket 18 is assembled to reduce the time and effort required to secure the bracket 18 to the bracket 16. 68 and 78 also include a bottom plate gap 196 which is a top-down opening in the bottom plate of the base portion 6...8. The lower extending portions m and 120 can pass through the bottom plate gap from above... 29 201236883 and 198 Thus, the voice coils (not shown) of the voice coil mechanisms 52 and 54 can be inserted through the floor gaps 196 and 198 into the lower extensions ι 8 and 120 to mount the voice coils in the lower extensions 118 and 12A. As shown in FIG. 11, base portions 68 and 78 also include rear wall openings 200 and 202, which are u-shaped openings configured to align with the print head (the rear wall opening 202 is partially visible in Figure 1〇). As discussed below, the control board 50 (shown above in Figures 2 to 5, 8 and 9) also includes encoder sensors 2〇4 and 2〇6 (in the figure) η is illustrated by a broken line), the encoder sensors are located adjacent to the rear wall openings 200 and 202, respectively, and are accessible through the rear wall openings 2〇〇 and 2〇2. For the encoder sensor Examples of suitable sensors for 204 and 206 include a rotary Hall sensor (eg, a 2D Hall sensor) and the like. Figure 12 is a side elevational view of the socket 46 illustrating the locking engagement between the base portion 68 of the socket village and the cover 70. As discussed above, the sockets 4...8 are identical to one another in the illustrated embodiment. The following side view of the socket 亦 is also applicable to the socket 48. As shown in Fig. 12, the 'cover 7' includes a bridging member 208 that connects the parallel tongues of the pinch actuator %. The bridging member 2〇8 is equipped Actuation... deflection when squeezed, thereby allowing the lock to be disconnected from the base = 68. As further shown, the front side of the base portion 68 includes a pair: a hook and a beveled surface 212 (only a single hook 21 and a single-sloping surface 212 are shown in Figure 12). The lock fishing 21 is a feature cover of the base portion 68. The lock clip 74 of the cover 7 is engaged with the features to lock the cover 70 to the base portion 68. 30 201236883 The user can open the cover 7 by pressing the pinch, and the double action 76, as illustrated by arrow 214. Due to the bridging member 2() 8, this situation causes the lock to be deflected in the direction of the arrow 216, wherein the deflection releases the lock self-locking hook 212. The release of the lock inflammation 74 causes the cover 7 to be unlocked from the base portion. This condition allows the cover 70 to be opened by the frame hinge member 72, as illustrated by arrows 2丨8. After inserting or otherwise loading the printhead 36 into the base portion 68, 'Usage| can then be closed by pivoting the cover 7 about the hinge link 72 in the opposite direction of the arrow 218 7〇. When the locking clip 74 of the cover 70 reaches the beveled surface 212, the incremental slope of the beveled surface 212 in the direction along the y-axis incrementally biases the locking clip 74 in the direction of arrow 2i6 (to actuate with the squeeze pinch) The manner of the means 76 is similar to that of the locking hooks 21 〇 after the passage of the inclined surface 212, thereby locking the cover 70 against the base portion 68. When closed and locked by the lock clip 74 and the locking hook 210, the socket 46 securely locks and holds the print head 36 in the following manner: preventing the print head 36 from moving relative to the socket 46 in any direction. As discussed above, this configuration is suitable for preventing unintentional horizontal and vertical shifts as well as preventing roll, pitch and yaw movements. Figure 13 is a cross-sectional view taken from the wear surface 13-13 of Figure 11, which illustrates the voice coil mechanism 52 and the optical encoder assembly 220. As shown, the carriage 18 includes an optical encoder assembly 220 that is a reflective optical encoder for the socket 46 for detecting upward and downward movement of the base portion 68. The bracket 18 also includes a second optical encoder assembly 31 201236883 (not shown) that is always used for the reflection of the socket 48 for detecting the upward and downward movement of the base portion 78. Optical encoder. Thus, optical encoder assembly 220 measures the vertical position of receptacle 46 and printhead 36, and second optical encoder assembly measures the vertical position of receptacle 48 and printhead 42. Examples of suitable optical encoder assemblies for optical encoder assembly 220 and second optical encoder assembly include those optical encoder assemblies disclosed in the following application: Batche丨der entitled "Incremental U.S. Provisional Patent Application No. 61/3 12,737. The optical sensor assembly 22A includes a sensor array 122a and a sensor target 222. As discussed above, the sensor array 122a is held on the front surface of the control board 5 and includes knife electronics (e.g., illuminators, photoreceptors, and processors) for operating the optical sensor assembly 220. The sensor target 222 is a panel that is fastened to the rear side of the base portion 68. In the illustrated embodiment, the sensor target 222 includes a reflective or light colored surface (eg, a reflective metal foil, a frog mirror, and the like) and a non-reflective or dark surface or opening, wherein the reflective surface is located at a non-reflective or non-reflective surface Above the reflective surface or opening or below the non-reflective surface or opening. In either configuration, the position of the receptacle 40 along the vertical z-axis can be determined based on the position of the surface of the sensor target 222 relative to the sensor array 1 22a. The second optical encoder assembly for the socket 48 can function in the same manner as the optical encoder assembly 220. As discussed above, the sensor array 122b (shown in Figure 5) is held on the front surface of the control board 5, 32 201236883 and includes blade electronics for operating the second optical sensor assembly (eg, 'lighting' , photoreceptor and processor). The second optical encoder assembly also includes a sensor target (not shown) fastened to the rear side of the base portion 78. The position of the socket 48 along the vertical z-axis can thereby be based on the surface relative to the sensor target. Determined by the position of the detector array 122b. As further shown in FIG. 13, the voice coil mechanism 52 includes upper magnets 224 and 226 and lower magnets 228 and 230, which are two sets of magnets disposed between the front plate 158 and the rear plate 167. The upper magnet 224 and the lower magnet 228 may be fastened to the front plate 158 such that the upper magnet 224 is vertically above the lower magnet 228' and the upper magnet 226 and the lower magnet 230 may be fastened to the rear plate 167' such that the upper magnet 226 is located vertically above the lower magnet 230. The upper magnets 224 and 226 are oriented to produce a magnetic field having a field line above the first direction (e.g., in the direction of arrow 23 la), and the upper magnetic field can be closed via the rear plate 167. The lower magnets 228 and 230 are oriented to produce a lower magnetic field having field lines oriented in a second direction (eg, in the direction of arrow 23 1 b), the polarity of the field lines being opposite to the polarity of the upper magnetic field, and The lower magnetic field can be closed via the front plate 158. The upper magnets 224 and 226 and the lower magnets 228 and 230 are alternately positioned in the reciprocating orientation of the two magnets such that the upper magnetic field extends in the direction of the arrow 231b and the lower magnetic field extends in the direction of the arrow 231 &amp; As shown, the upper magnets 224 and 226 face each other, and the lower magnets 228 and 230 face each other. In the illustrated embodiment, the front plate 158, the rear plate 33 201236883 167, the upper magnets 2〇4 and 2〇6, and the lower magnets 2〇8 and 21〇 are held by the bracket frame 44 and do not move with the socket 46. . The voice coil mechanism also includes a voice coil 232 that is a coil or other roll assembly that is fastened to the lower extension portion 118 of the socket 46 and supported by the lower extension portion 118 of the socket 46. This situation allows the socket 46 to move with the voice coil 232 relative to the carriage frame 44. Figure 14 is a cross-sectional circle taken from section 14_14 of Figure 12. As shown in FIG. 5, the voice coil mechanism 54 includes an upper magnet 234, a lower magnet 236, and a magnet (not shown) corresponding to the magnets 226 and 230 (shown in FIG. 13). These magnets are disposed on the front plate 160 and Between the back plates 168 (shown above in Figure 9). Thus, in the illustrated embodiment, the front panel 16A, the rear panel 168, the upper magnet 234, the lower magnet 236, and the respective rear magnets are held by the bracket frame 44 and do not move with the receptacle 48. The voice coil mechanism w includes a voice coil 238 that is a second coil or other roll assembly that is fastened to the lower extension portion 120 of the socket 48 and supported by the lower extension portion 12 of the socket 48, thereby allowing the socket 48 moves with the voice coil 238 relative to the carriage frame 44. In the illustrated embodiment, the I-ring mechanisms 52 and 54 can act as a voice coil actuator 'where the socket 48 is illustrated in FIG. 14 as being at a vertical elevation relative to the socket ( (corresponding to the above View shown in 8). Thus, with respect to the voice coil mechanism 52, the current can be induced to the upper or lower toggle socket 46 (and the print head 36) via the voice coil 232, the upward or downward direction of which depends on the current through the voice coil 232. The direction of rotation. In particular, the direction of movement is determined by the force applied to the item m. 34 201236883 specifies that the direction of movement is substantially at right angles to the direction of rotation of the current induced via the voice coil 232 and the generated magnetic field. For example, if the current passes in the first direction of rotation about the voice coil 232, the magnetic field generated by the upper magnets 224 and 226 and the lower magnets 228 and 230 forces the voice coil 232 upward relative to the carriage frame 44. Because the voice coil 232 is fastened to the lower extension portion 118 of the socket 46, the upward force on the voice coil 232 correspondingly forces the socket 46 and the print head 36 to move upward relative to the carriage frame 44. Or 'if the current passes in the second and opposite rotational directions around the voice coil 232, the magnetic fields generated by the upper magnets 224 and 226 and the lower magnets 228 and 230 force the voice coil 232 downward, thereby enabling the socket 46 and printing The head 36 moves downward relative to the carriage frame 44. The voice coil mechanism 54 can function in the same manner as the voice coil mechanism 52 to cause the socket 48 and the print head 42 to move up and down relative to the carriage frame 44 based on the current induced via the voice coil 238. The use of the voice coils 232 and 238 in this manner provides fine positioning control of the vertical movement of the sockets 46 and 48 independently of each other. As discussed above, fine positioning control is required to maintain proper vertical positioning of the print heads 36 and 42. In addition, the voice coil mechanisms 52 and 54 may have additional utility in addition to the financial print heads 36 and 42 between the descending active state and the elevated passive state. For example, in some embodiments, the voice coil mechanisms Μ and Μ can each be used to compensate for possible backlash in the coarse ... positioner of the bracket for the platen 14 (shown in Figure 1). This locator backlash may occur due to frictional resistance in the mechanical mating features of the bracket for the pressure plate 14 0 35 201236883 Furthermore, the voice coil mechanisms 52 and 54 can be used in the following applications: wherein the 印J print head 36 and 42 may require rapid vertical acceleration, such as when reaching the end of the tool path. For example, when the print head % reaches one end of the tool path and stops squeezing, the voice coil mechanism 52 can quickly interrupt the print head 36 to the upper toggle (eg, at about 3") a. The extruded material string of the apex of the print head 36. The voice coil mechanism 54 can function in a similar manner. In an alternative embodiment, the components of the voice coil mechanism 52 &amp; 54 held by the lower extension portions 118 and 120 can be Variations. For example, in one embodiment 'the front plate i 58 and the rear plate 167 can be held by the lower extension portion ii 8 , the neodymium magnets 224 and 226 and the lower magnets 228 and 230, thereby allowing such components Moving with the socket 46. In this embodiment, the voice coil 232 can then be held by the cradle frame 44. A similar configuration can be used for the voice coil mechanism 54. In an additional alternative embodiment, the voice coil mechanisms 52 and 54 Or both or both may comprise a magnetic fluid or other similar composition having small size ferromagnetic or ferrimagnetic particles suspended in a carrier liquid (for example, water and an organic solvent). Figure 8 and Figure 9) Refer to the toggle section discussed above (see Supporting the knot) After a given layer of 26, controller 28 can instruct voice coil mechanism 54 to raise socket 48 and printhead 42 upwardly from the descending height 164 along the vertical z-axis. To accomplish this, controller 28 can indicate the bracket ( The current is induced via the voice coil 238 in the first-rotation direction via the control board 50). The magnetic field around the voice coil 238 returns the voice coil 238 and the socket 48 (and the print head 42) upward, as illustrated by arrow 16 。. 201236883 The flexure segment i〇8 of the upper flexure 88 and the arms 128b and 128d of the lower flexure ι24 are thus upwardly slid together with the socket 48 and the print head 42 to reach an undeflected state and a horizontal state. Engagement between portions 68 and 78 and bracket frame 44 may also define an upper hard stop and a lower hard stop (i.e., a physical stop) at elevated height 162 and lowered height 164. For example, The base portion 68 (and/or the lower extension portion 11 8 ) can be raised upward until it contacts the downwardly facing member of the bracket frame 44 (corresponding to the riser 162), and the base portion 68 can be / or the lower extension portion 11 8 ) descends downward until it contacts the upward facing member of the bracket frame 44 (corresponding Similarly, the base portion 78 (and/or the lower extension portion 12A) can be raised upward until it contacts the downwardly facing member of the bracket frame 44 (corresponding to the raised height 162). The base portion 78 (and/or the lower extension portion 120) can be lowered downward until it contacts the upwardly facing member of the bracket frame 44 (corresponding to the descending height 164). Thus, the position of the hard stop can correspond to Further vertical movement of the print head 36 or 42 above the raised height 162 or below the lowered height 164 is prevented. Thus, when the hard stop for the upper portion of the base portion 78 is reached, the control panel 5 can maintain the strength of the current through = 圏 238. This condition holds the base portion 78 against the upper hard stop and maintains the desired height (e.g., raised height M2). In addition, a second optical encoder assembly (with sensor array 222b, shown in Figure 5) for receptacle 48 can measure the vertical position of receptacle 48 and printhead 42. Comparing this situation with a servo motor based mechanism, in a servo motor based mechanism, the socket 48 will be servoed to a particular vertical position 37 201236883 ' followed by encoder measurement). The amount of energy, such as for maintaining positioning and for positioning (rather than moving to the hard stop to measure the vertical position, can be used for multiple functions by measuring the signal-like voice coil mechanism from the second optical encoder assembly. 4, maintaining a strange height along the vertical z-axis. The controller 28 can also instruct the voice coil mechanism 52 to lower the socket 46 and the print head 2 downward from the raised height 162 along the vertical z-axis. In detail, the controller 28 The carriage 18 can be instructed (via the control panel 5A) to induce current in the first direction of rotation via the voice coil 232. The magnetic field around the voice coil 232 forces the voice coil 232 and the insertion of $46 (and the print head 36) downward, such as Illustrated by the arrow coffee. The flexure segment 106 of the upper flexure 88 and the arm portion 128c of the lower flexure 124 are thus pivoted together with the socket 46 and the printhead %. When reached for the base portion 68 The optical control board 50 maintains the strength of the current through the voice coil 232 when the lower portion is hard-wired. This situation will: the seat portion 68 is held against the lower hard stop and remains as expected high = [for example, ' The height is lowered 164). In addition, the optical encoder assembly 2 measures the vertical position of the socket 46 and the print head. The measured vertical position can also be used for a variety of functions, such as for maintaining positioning and for maintaining a constant height along the vertical z-axis by servoing the voice coil mechanism $2 with the measured signal from the first optical encoder assembly. . After completing a given layer of the 3D part 24, the controller 28 can then instruct the voice coil mechanism 52 to raise the socket 46 and the print head 36 from the downward direction 164 to the south along the vertical z-axis. For this purpose, the controller μ can produce eight brackets 18 (via the control board 50) via the voice coil 232 in a second direction of rotation opposite the first direction of rotation of the current 38 201236883 flow previously applied to the voice coil 232 Induced current. The magnetic field around the voice coil 232 thus forces the voice coil 2 i 2 and the socket 46 (and the print head 36) upward. The flexure segments 1〇6 of the upper flexure 88 and the arms 128a and 128c of the lower flexure 124 are thus flexed upwardly together with the socket 46 and the printhead 36 to achieve an undeflected state and a horizontal state. When the hard stop for the upper portion of the base portion 68 is reached, the control panel 5 can maintain the strength of the current through the voice coil. "This situation holds the base portion 68 against the upper hard stop and maintains The expected height (eg, height 162). In addition, the optical encoder assembly 220 can measure the vertical position of the socket 46 and the print head 36. Accordingly, the controller 28 can also instruct the voice coil mechanism 54 to lower the socket 48 and the print head 42 downward from the raised height 162 along the vertical axis. The controller 28 can instruct the carriage 18 (via the control panel 5A) to induce current via the voice coil 238 in a second direction of rotation that is opposite the first direction of rotation of the current previously applied to the voice coil 238. The magnetic field around the voice coil 238 thus forces the voice coil 238 and the socket 48 (and the print head 42) downward. The flexure segment 108 of the upper flexure 88 and the arm 128b of the lower flexure 124 and! The 28d thus deflects downwards along with the socket 48 and the print head 42. The control panel 5 can maintain the strength of the current through the voice coil 238 when it reaches the hard stop for the lower portion of the base portion 78. This condition holds the base portion 68 against the lower hard stop and maintains the desired height (e.g., &apos;descent height 164). Additionally, the second optical semaphore assembly can measure the vertical position of the socket 48 and the print head 42. 39 201236883

Due to the independent operation of the voice coil mechanism 52 and M ^ 54 ^ π *, the voice coil mechanism 52 and the cymbal can be raised and lowered at the same time as required by the reciprocating side * 6 and 48 (at * when necessary). This situation is reduced by the time required to print heads 36 and 42 between the 槿馇 4 and the knuckle. In addition, the sound abuts ". The combination of the sundial mechanisms 52 and 54 together with the upper 4 curved portion 88 and the lower flexed portion 24 provides precise control of the vertical movement of the sockets 46 and 48 while also preventing the socket "printing head" 36 and 42) Relative to the cup plus #^, (4) # 亍 亍 托 托 托 托 托 托 托 托 托 托 托 托 托 托 托 托 托 托This month / ^ System 1 〇 builds 3D parts 24 and support structure 2 6 with high resolution features, while also allowing, and allowing the print heads 36 and 42 to be removed and using a new print head 36 And 42 replaces the print heads 36 and 42. Figure 15 illustrates (d) the processing procedure for inserting or otherwise loading the print head 36 into the socket 46. This process can also be applied to the print head 42 and the socket 48. As shown, the cover 7G includes a circuit board 24 that is fastened to the inner surface of the cover 7 by a screw (4) or other similar fastener. Circuit board 240 is a printed circuit board or other similar device that interfaces to electronic interface 94 (FIG. 2 to Figure 7F) and includes electrical contacts 244. The electrical contact 244 is configured to interface with the printhead % when the printhead 36 is inserted into the base portion 68 and the cover 7 is closed. This situation allows electrical power and communication to be relayed to print head 36 and control board 50 and to print head 36 and control board 5 in the same manner as for board i 74 (shown in Figures i and n) Electrical power and communication are relayed between (via circuit board 240, electronic interface 94, and electrical contacts 244). As stated above, in an alternative embodiment, the circuit board 24 can be replaced with a different type of circuit (e.g., or a flexible circuit). In this embodiment 40 201236883, the flexible circuit can be directly connected between the control board 50 and the cover 70 (i.e., the electronic interface 94 can be omitted). As further shown in FIG. 15, the jaw assembly 60 of the printhead 36 includes a housing cover 246 and an outer housing 248, each of which may be comprised of one or more metal and/or plastic materials. Molded or poured. The outer casing 246 is secured to the outer casing 248 by a latch 250 that engages the jaw 252 of the outer casing 248 for assembly of the printhead 36. The outer casing includes an electrical raft 254, an indentation 256, and a conduit 258. And 260. The electrical turns 254 are openings through the outer casing 246 which provide access to a circuit board (not shown in Figure 15) within the jaw assembly. When the cover 7 of the spare socket 46 is closed, the electrical contacts 244 are inserted through one of the electrical turns 254 to engage the circuit board of the printhead 36. This configuration relays power and communication between the circuit board 24 and the print head 36 and between the circuit board 240 and the print head 36. Electrical 埠 254. In the illustrated yoke example, the electrical 埠 2 5 4 is configured to provide access to a plurality of electrical sources (eg, electrical contacts 242) and to accommodate a circuit board having multiple electrical contacts (eg, circuit board 240) . In an alternative embodiment, the outer casing cover 246 can include a single indentation 256 configured to receive the electrical contacts 244 for the outer casing to retain the printhead geometry from the receptacles 46. For example, the indentation of the 2nd to 6th of the waste mark 256 is inserted, and the indentation is adapted to the concave lip 18" of the cover 70 when it is 36, and can be concave when the cover 70 is closed. The lip assists in securing the print head 36 to the 201236883 seat 46. The conduits 258 and 260 are openings through the outer casing cover 226 that provide access to the conduit of the part material or support material. For example, the conduit 258 can receive a conduit 34 (shown in Figure i) that extends through the conduit 258, thereby aligning the conduit 34 vertically with the liquefier tube assembly 62. In the example, the conduit 260 is an unused opening for the printhead 36 that allows the single-design for the outer casing 246 to be used to mirror both of the printheads 36 and 42. Thus, the printhead 42. The catheter 40 can extend through the catheter hub 260 and the catheter hub 258 can be an unused opening. In an alternative embodiment, the unused catheter cartridge can be omitted (eg, the catheter hub 260 for the printhead 36) The outer casing 248 is configured to rest on the floor of the base portion 68 and includes overhanging features 262 and venting holes 264. The sag feature 262 has a downwardly converging geometry and is part of the cymbal assembly 6 , from which the liquefier pump assembly 62 extends downwardly when the print head 36 is installed in the socket 46. (See, for example, Figures 2 and 8), the depending features of the overhanging feature 262 and the printhead 42 have a downwardly converging geometry that mirrors each other. This reduces the insertion of the erroneous printhead into a given socket. Therefore, the outer casing 248 and the corresponding outer casing of the print head 42 are mirror images of each other as compared to the outer casing cover (e.g., the outer casing cover 246). The venting holes 264 are venting holes through the side walls of the outer casing 248. The aperture allows airflow from the cooling unit 56 and the vent opening 170 to enter the 42 201236883 printhead 36. The printhead 36 can be inserted or otherwise loaded into the socket 46 by: 60 is slid into the base portion 68 (e.g., as indicated by arrow 266) until the portion of the jaw assembly 60 rests within the base portion 68. During insertion, the alignment cone 1 84 is inserted into the housing. Reciprocating at the bottom of body 248 (not shown in Figure 15) to provide a three-point alignment between the print head 36 and the base portion 68. When the jaw assembly 60 is inserted into the base portion 68, the overhang feature 26 2 and the liquefier pump assembly 62 extends downward (e.g., as shown above in Figures 2, 3, 5, and 8.) Further, when the jaw assembly 6 is inserted into the base portion 68 Aligning the vent 264 with the vent opening 170 in the lateral wall of the base portion 68. As stated above, this alignment allows the cooling unit 56 (shown above in Figures 2, 5 and 8) The airflow is directed through the vent opening 17 and directs airflow into the printhead 36 via the vents 264. After the print head 36 is inserted into the base portion 68, the cover 70 can then be closed against the base portion 68, as discussed above. When the cover is closed, the electrical contacts 244 engage one of the electrical turns 254 of the printhead 36. This configuration relays electrical power and communication to the board 24 and the print head 3^6 and relays the electrical power and pass k between the circuit 24G and the print head % &lt; In addition, when the cover 70 is closed and locked to the base portion, the portion of the hidden assembly 60 is fastened to the socket by three-point alignment, thereby preventing the print head 36 from being laterally or relative to the socket 46. Vertical movement (or rolling movement, pitch movement and yaw movement). 43 201236883 The cover and base portion engagement frame 44 are used to: and 48 are examples for use with the socket. In the case of including a plurality of different mechanisms with a snap-fit mechanism, the handle 2 is used to prevent the print head from moving relative to the print head % and the movement of the other sockets: The base portion 68 of the socket 46 can include a snap-fit spray head 36 that can be inserted into the base portion 68 and snap-fitted with the base portion (e.g., by offset from the base plate of the base portion 68). In this embodiment, the cover i 7 可 can be omitted, and the stencil % can be held by the snap-fit engagement by the base portion 68 alone, and the snap-fit engagement prevents the print head 36 from being opposite to the base portion. (10) moving (eg 'by aligning the cone 184). Then directly to the control panel 5 and the print head 36 The electrical connection is formed. As shown in FIG. 16, the outer casing 248 also includes a bottom surface 268, alignment slots 270 and 272, a screw slot 274 and a rear pocket 276, wherein the rear pocket 276 is a U-shaped portion of the outer casing 248. The u-shaped portion is configured to extend into the U-shaped rear wall opening 200 of the base portion 68 (shown above in Figures 丨丨 and Figure 15). The bottom surface 268 is the bottom plate resting on the base portion 68 (figure 2 to the surface on the surface shown in Fig. 5 and Fig. 7 to Fig. 15. The alignment grooves 270 and 272 are reciprocating grooves which are aligned with the conical body ι 84 (shown in Figs. 10, 11 and 15). Engage to form a three-point alignment between the printhead 36 and the base portion 68. The screw slot 274 is configured to extend through the opening 188 at the screw 140 (above Figure 10, Figure 1 Figure 14 44 201236883 screw The slot of the apex of 140. In this case, when the insertion into the base portion 68 interferes with three points and as shown in Fig. 15, the receiving screw 14 0 is aligned with the print head 36. Except for the rolling orientation, the pitch orientation and the yaw In addition to the orientation, the three-point alignment also desirably fixes the position of the print head 36 with respect to the x-y_z coordinates relative to the base portion 68. For example, the bottom table The contact between 268 and the bottom plate of base portion 68 can be used to fix the pitch orientation 'alignment groove 270 (slot slot) and the spray between one of the alignment cones 184 to fix the roll alignment and yaw orientation' And the engagement between the alignment slot 272 and the other alignment cones 184 can fix the x_y_z coordinates. Examples of suitable liquefier assemblies for the liquefier assembly 294 (eg, liquefier 3 10, filament tube 362 and extrusion) The pressure apex 364) includes a liquefier assembly disclosed in the following applications: Swans〇n et al., entitled "Liquefier Assembly For Use In for Liquefied Assembly-Based Additive Manufacturing Systems" Extrusion-Based Additive Manufacturing Systems, Inc., U.S. Patent Application Serial No. 12/888,087; by Swanson et al., entitled "Method for Constructing a Three-Dimensional Model by an Extrusion-Based Additive Manufacturing System (Meth〇d Fm Building Three -Dimensional Models With

Extrusion-Based Additive Manufacturing Systems, Inc., U.S. Patent Application Serial No. 12/888,098; Batchelder et al., U.S. Application Publication No. 200W0273, No.: Swanson et al., U.S. Patent No. 6, No. 4,124; No. 6,547,995; and U.S. Patent Nos. 7,384,255 and 45 201236883 7,604,470 to LaBossiere et al. As discussed above, the print heads 36 and 42 can be inserted into the receptacles 46 and 48 of the cradle 18 and locked with the receptacles 46 and 48 of the cradle 18 (and thereby providing the printhead assembly 43 followed by the controllable system 1 0 extruding and depositing the part material and the support material from the print heads 36 and 42 to the platen 14

The 'on-the-spot construction of a 3D model (eg, 3D model 24) and support structure (eg, support structure 26) using fused deposition modeling techniques. Further, the sockets 46 and 48 themselves are by bracket frame 44 in the following manner Suspension: allows controlled movement of the sockets 46 and 48 (and the print heads 36 and 42) via the voice coil mechanisms 52 and 54 relative to the carriage frame 44 along the vertical z-axis, while also preventing the sockets 46 and 48 (and columns) The print heads 36 and 42) move relative to the carriage frame 44 in the horizontal x_y plane and prevent the roll from moving the pitch and yaw movements. This configuration allows the voice coil mechanism 5 2 to toggle the toggle sockets 46 and 48 (and the print heads 36 and 42) between the lowered active state and the raised passive state in such a manner as to provide vertical movement of the receptacles 46 and 48 independently of each other. Precision control. Accordingly, the print head assembly 43 is suitable for constructing a 3D model (eg, D杈 type 24) having a high resolution feature and a support structure (eg, 'support structure 26), with the license interchangeably replacing a plurality of print heads (eg, , print head % 2 = household: statement 'used with system i. and print head assembly 43 together with pieces of material and support materials including parts material filaments and teeth material filament 1 in the construction of 3D model" Part material 46 201236883 includes polymeric materials and metallic materials. In some embodiments, suitable forming materials include materials having amorphous properties, such as thermoplastic materials, amorphous metal materials, and combinations of the foregoing. Suitable for constructing support structure 26. The support material comprises a polymeric material. In some embodiments, suitable support materials include materials having amorphous properties (eg, thermoplastic materials) and such materials can be desirably self-contained after construction of the D-model 24 and support structure 26 The present invention has been described with reference to the preferred embodiments, and those skilled in the art will recognize that the invention may be Variations in form and detail in the context of the scope. [Schematic Description of the Drawings] Figure 1 is a top perspective view of a melt deposition molding system including the print head assembly of the present invention. A front view perspective view of the print head assembly, the print head assembly is covered with wood, a pair of removable print heads, and a pair of voice coil mechanisms. Figure 3 is a rear perspective view of the print head assembly. The rear view of the print head assembly is a top perspective view, which illustrates the top flexure of the top. Figure 5 is a front elevational perspective view of the print head assembly, which illustrates the deflection of the lower portion of the carriage. Figure 6 is a bottom view of the flexure of the top of the wood. Figure 7 is a bottom view of a portion of the ρ-head assembly, which illustrates the engagement of the lower portion of the 201236883 flexure with the bracket. Figure 8 is a front view of the £ 总 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Figure 10 is a front perspective view of the carriage without the print head. Figure 11 is a front elevational view of the cradle. Figure 12 is a side elevational view of the socket of the cradle illustrating the operation of the hood of the socket. The circle U is one of the voice coil mechanisms of Figure 11. Figure 14 is taken from Figure 12 is a cross-sectional view of the U-turn, which further illustrates the voice coil mechanism. Figure 15 is a front perspective top view of one of the J-tipped heads t positioned above the socket of the bracket, the figure illustrates the printing. Figure 16 shows the bottom view of the print head. [Main component symbol description] 10 System 14 Pressure plate 18 Print head carriage 20a Rack 22a Rack 12 Construction chamber 16 Bracket 20 Consumable assembly 22 Consumable assembly 24 3D parts 48 201236883 26 Support structure 28 Controller 30 Communication line 31 Fairing 32 Container part 34 Conduit 36 Print head 38 Container part 40 Conduit 42 Print head 43 Print head total 44 bracket frame 46 socket 48 socket 50 control panel 52 voice coil mechanism 54 voice coil mechanism 56 cooling unit 58 cooling unit 59 screw 60 jaw assembly 62 liquefier pump assembly 62a tip 62b outlet vent 64 匣Assembly 66 liquefier pump assembly 66a tip 66b outlet vent 68 base portion 70 cover 72 hinge connector 74 lock clip 76 pinch actuator 78 base portion 80 cover 82 hinge connector 84 lock clip 86 pinch Retractor 88 Upper Flex 89 Interface 90 Interface 91 Interface 92 Screw 94 Electronic Interface 96 Electronic Interface 98 Interface 100 Interface 102 Screw 49 201236883 104a Screw 104b Screw 104c Screw 106 Flexing Segment 108 Flexing Segment 110 Tab Member 112 Screw 114 tongue member 116 screw 1 118 lower extension portion 120 lower extension 122a sensor array sub-122b sensor array 124 lower flex portion 126 central segment 128a arm 128b arm 128c arm 128d arm 130 opening 132 opening 134a opening 134b Opening 134c opening 134d opening 136a pin slot 136b pin slot 136c pin slot 136d pin slot 138 alignment pin 140 screw 142 alignment pin 144 screw 146 alignment pin 148 screw 150 alignment pin 152 screw 154 opening 154a bottom opening 154b bottom opening 156 Opening 158 front plate 160 front plate 161 screw 162 ascending height 164 Falling height 50 201236883 165 Distance 166a Arrow 166b Arrow 167 Rear plate 168 Rear plate 169 Screw 170 Vent opening 172 Vent opening 173 Bridging member 174 Circuit board 176 Screw 178 Electrical contact 180 Recessed lip 182 Concave lip 184 Pair Quasi-conical body 186 Alignment cone 188 Slot 190 Slot 192 Bottom plate opening 194 Bottom plate opening 196 Bottom plate gap 198 Bottom plate gap 200 Rear wall opening 202 Rear wall opening 204 Encoder sensing 206 Encoder sensor 208 Bridging member 210 Lock fishing 212 Oblique surface 214 Arrow 216 Arrow 218 Arrow 220 Optical encoder 222 Sensor target assembly 222b Sensor array 224 Upper magnet 226 Upper magnet 228 Lower magnet 230 Lower magnet 231a Arrow 231b Arrow 232 Voice coil 234 Upper magnet 236 Lower magnet 51 201236883 238 Voice coil 240 Circuit board 242 Screw 244 Electrical contact 246 Housing 248 Outer housing 250 Latch 252 Clip 254 Electrical 珲 256 Indentation 258 Catheter 埠 262 Catheter 262 Suspension feature 264 Vent 266 Arrow 268 Bottom surface 270 Alignment groove 272 alignment groove 27 4 Screw slot 276 Rear pocket 294 Liquefier assembly 310 Liquefier 362 Filament tube 364 Squeeze tip 52

Claims (1)

201236883 VII. Patent application scope: 1. Two types of print head assemblies for use in a fused deposition molding system. The print head assembly comprises: a carriage frame, which is disposed by the A holder mechanism of the fused deposition molding system is maintained; and - the socket 'from the bracket frame branch such that the socket is movable relative to the bracket frame along at least the axis, the (four) socket being configured to print a removable print The head is held securely in a manner that prevents the holding print head from moving relative to the socket during operation of the molten deposition molding system. (4) The print head assembly of claim 1, wherein the socket is self-supported by at least one suspension mechanism, and the suspension mechanism is configured to limit the socket to a real 4 s, upwardly relative On the movement of the carriage frame along the at least one-axis-one-axis side T〇! t- 4α 丄▲人丄i » . 3 hang-up two assembly 'its...n (four) item 1 The print head assembly is described, and further includes a - "toggle ττΊppk., mechenism" that is configured to move the at least m relative to the carriage frame. The present invention provides the print head assembly of claim 4, wherein the toggle mechanism is 匕3 days and a plurality of magnets configured to generate a magnetic field, wherein the voice coil is at least partially disposed at the Within the generated magnetic field. 6. The printhead assembly of claim 1, and further comprising - an encoder assembly 'the coder assembly configured to measure the socket relative to the bracket frame along the at least one axis position. 7. The printhead assembly of claim 1, wherein the socket comprises a vent opening and wherein the printhead assembly further comprises a cooling unit configured to be at the printhead The air is guided through the vent opening to the printhead when received in the base portion. The printing head assembly of claim 1 , wherein the socket is a _ first socket and the detachable printing head is a first reticle print head, the print head assembly further comprises a second a socket, the second socket being; the bracket frame branch such that the second socket is movable relative to the bracket frame independently of the first socket along the at least one axis, and wherein the second socket is a second The removable print head is held firmly in the following manner: prevents = : = : during the period of the accumulation of the film. 9. A method for use in a fused deposition, the head assembly comprises: The print head 54 201236883 bracket frame is retained by the support mechanism by one of the fused deposition molding systems; and the socket includes: a base portion, the white frame is supported by the bracket frame and configured for storage a print head 'where the base portion includes an alignment feature' that is configured to align with the opposite alignment feature of the received print head; and the cover 'is configured to tight Partially closed by the base to at least partially retain the stored print head Inside the socket. 10. The printhead assembly of claim 9, and further comprising: a cover circuit retained by the cover; an electrical contact coupled to the cover circuit and configured to be tightly attached to the cover The stored print head is engaged when the base portion is closed. η. The print head assembly of item 1 of 5, and further comprising a control panel secured to the bracket frame and having a control panel interface, wherein the cover circuit is configured to Communicate with the control panel interface. 12. The printhead assembly of claim 9, wherein the cover comprises: at least a lock clip configured to engage the base portion when the cover is closed against the base portion; and 55 201236883 A pinch actuator is partially detached through the arranging seat. The at least one clip and the base 13. The print head assembly of claim 9, and further comprising at least one toggle mechanism configured by a configuration: m to cause the socket to be opposed to The carriage frame moves. 14. The printhead assembly of claim 13, wherein the toggle mechanism comprises a voice coil and a plurality of magnets configured to generate a magnetic field, wherein the voice coil is at least partially disposed in the generated Inside the magnetic field. 15&lt;- a printhead for use in a fused deposition molding system, the printhead comprising: a cymbal assembly comprising: a conduit raft configured to receive a filament conduit; and at least one electrical raft; a liquefied H-assembly 'extending into the g-type assembly and aligned with the conduit ;; and a circuit board disposed within the raft assembly and accessible via the at least electrical raft, wherein the circuit board The liquefier pump assembly is in electrical communication. 16) If the request step includes a vent, the printhead of 15 wherein the vent assembly is configured to receive 56 201236883 cooling air from an external source. The print head of claim 15, wherein the at least one electrical item, such as the request item, comprises a print head of one of a plurality of alignment feature fused deposition molding systems, wherein the raft assembly is selected The plurality of alignment features are configured to engage the reciprocating alignment features of the t-bracket. The print head of claim 15 wherein the cymbal assembly is obtained by: an outer casing 'and an outer casing secured to the outer casing, and wherein the conduit and the at least An electrical raft is disposed in the outer casing. The print head of claim 19, wherein the outer casing comprises a downwardly indented surface disposed between the conduit and the at least one electrical raft. 57