CN212684717U - Rotary-cut wire feeding mechanism for 3D drawing pen - Google Patents
Rotary-cut wire feeding mechanism for 3D drawing pen Download PDFInfo
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- CN212684717U CN212684717U CN202020796602.3U CN202020796602U CN212684717U CN 212684717 U CN212684717 U CN 212684717U CN 202020796602 U CN202020796602 U CN 202020796602U CN 212684717 U CN212684717 U CN 212684717U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 30
- 241000180587 Pinnidae Species 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000006872 improvement Effects 0.000 description 6
- 101000579646 Penaeus vannamei Penaeidin-1 Proteins 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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Abstract
The utility model discloses a 3D drawing pen is with rotary-cut advance silk mechanism, 3D drawing pen includes the shell, and the inside of this shell has seted up a material way along its length direction, the exit end of material way communicates the nozzle of 3D drawing pen, rotary-cut advance silk mechanism set up in the inner chamber of shell, and this rotary-cut advance silk mechanism includes worm and driving motor, the axial direction of worm is parallel with the length direction of material way, the worm has at least two spiral teeth, the shell is interior to have seted up a holding tank corresponding to the worm, and one side of this holding tank runs through the material way, through driving motor drive worm makes rotary motion, and the spiral tooth rotation on the worm cuts into the consumptive material, drives consumptive material screw propulsion, and the driving force is great; the meshing depth of the spiral teeth of the worm is constant all the time, the meshing depth of the spiral teeth of the worm is not different from the meshing depth of the gears, and the consumable is pushed forward more stably.
Description
Technical Field
The utility model relates to a 3D drawing pen field, concretely relates to 3D drawing pen is with rotary-cut wire feed mechanism.
Background
3D plotters typically write with plastic filaments with a built-in fan in the tip to cool the filament. When the pen is operated, a user holds the pen to paint in the air, the plastic wires in the pen tube gush out and are quickly solidified under the action of the fan in the pen, and therefore the pen is in a three-dimensional shape.
Inside silk mechanism of advancing that is equipped with of 3D plotting pen, send a silk mechanism to realizing from last to down to following along a body direction in order to drive, prior art is at the plotting pen afterbody (because of the ease of use considers that the most portion of avoiding gripping establishes at the afterbody) and transversely is equipped with a gear motor, this gear motor passes through the screw etc. and fixes in a body, gear motor direct drive sends a gear rather than the hub connection, see figure 1, the silk mechanism of advancing of current 3D plotting pen is mostly through 4 interlock plastic filament 5 of gear, 4 rotation in-process interlocks to plastic filament 5's interlock depth of gear, when advancing silk resistance great, the consumptive material is gnawed easily, lead to skidding.
Therefore, how to solve the defects of the prior art is a subject of the present invention.
Disclosure of Invention
In order to solve the problem, the utility model discloses a 3D is rotary-cut wire feed mechanism for drawing pen.
In order to achieve the above purpose, the utility model provides a following technical scheme: A3D drawing pen is with cutting advance silk mechanism rotatably, the 3D drawing pen includes the pen shell, the inside of the pen shell has a material channel along its length direction, the exit end of the said material channel communicates the spray nozzle of the 3D drawing pen, the said cutting advance silk mechanism is set up in the cavity of the said pen shell, the cutting advance silk mechanism rotatably includes worm and driving motor, the axial direction of the said worm is parallel to length direction of the said material channel, the said worm has at least two spiral teeth, correspond to the said worm and have a holding tank in the said pen shell, one side of the holding tank runs through the said material channel, the said worm is set up in holding tank, and its spiral tooth stretches into the said material channel, the tooth flank of one side of the said spiral tooth towards the spray nozzle is perpendicular to the axis of the said worm, the tooth flank of one side of the spiral tooth opposite to the spray nozzle is the inclined plane from top to bottom;
one end of the worm is rotatably connected to the pen shell, and the other end of the worm penetrates through the accommodating groove and is in transmission connection with a power output shaft of the driving motor, and the worm is driven by the driving motor to rotate.
As an improvement of the utility model, driving motor's power output shaft's radial cross-section is the D style of calligraphy, D type pilot hole has been seted up along its axial to the tip of worm, driving motor's power output shaft inserts in the D type hole pilot hole to this constitutes driving motor and is connected with the transmission of worm.
As an improvement of the utility model, the pitch of two helical teeth is 2mm, and the helical pitch is 4 mm.
As an improvement of the utility model, the rotational speed of driving motor is not higher than 90 rpm.
As an improvement of the utility model, the included angle of the tooth surfaces on the two sides of the spiral tooth in the axial direction of the worm is 45 degrees.
Compared with the prior art, the utility model has the advantages of as follows: the worm is driven to rotate by the driving motor, the spiral teeth on the worm rotate to cut into the consumable materials to drive the consumable materials to spirally advance, the worm transmits power with a high reduction ratio, meanwhile, the tooth surface of one side, facing the nozzle, of the spiral teeth is perpendicular to the axis of the worm, the direction of the force of the spiral teeth acting on the consumable materials is consistent with the advancing direction of the consumable materials, and component force in other directions is avoided, so that the driving force of the spiral teeth acting on the consumable materials is large; the meshing depth of the spiral teeth of the worm is constant all the time, the meshing depth of the spiral teeth of the worm is not different from the meshing depth of the gears, and the consumable is pushed forward more stably.
Drawings
FIG. 1 is a schematic view of a conventional gear feeding structure;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a perspective view of the worm and drive motor;
FIG. 4 is an axial cross-sectional view of the worm;
fig. 5 is a stress analysis diagram of helical teeth with different shapes.
List of reference numerals: 1-3D drawing pen; 11-a pen shell; 12-a material channel; 13-a nozzle; 14-accommodating the tank; 2-a worm; 21-helical teeth; a 22-D type hole assembly hole; 3-driving a motor; 4-a gear; 5-plastic wire.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example (b): referring to fig. 1-5, a rotary cutting wire feeding mechanism for a 3D drawing pen, the 3D drawing pen 1 includes a pen shell 11, a material channel 12 is disposed inside the pen shell 11 along a length direction thereof, an outlet end of the material channel 12 is communicated with a nozzle 13 of the 3D drawing pen 1, the above is a structure of the existing 3D drawing pen 1, wherein the material channel 12 is a wire feeding channel of a plastic wire 5;
the rotary cutting wire feeding mechanism is arranged in an inner cavity of the pen shell 11 and comprises a worm 2 and a driving motor 3, the axial direction of the worm 2 is parallel to the length direction of the material channel 12, the worm 2 is provided with at least two spiral teeth 21, an accommodating groove 14 is formed in the pen shell 11 corresponding to the worm 2, one side of the accommodating groove 14 penetrates through the material channel 12, the worm 2 is arranged in the accommodating groove 14, the spiral teeth 21 of the worm 2 extend into the material channel 12, the tooth surface of one side, facing the nozzle 13, of each spiral tooth 21 is perpendicular to the axis of the worm 2, and the tooth surface of one side, facing away from the nozzle 13, of each spiral tooth 21 is an inclined surface inclined from top to bottom; in the embodiment, the thread pitch of the two spiral teeth 21 is 2mm, the lead is 4mm, and the included angle of the tooth surfaces on the two sides of the spiral teeth 21 in the axial direction of the worm 2 is 45 degrees;
one end of the worm 2 is rotatably connected to the pen shell 11, specifically, the worm 2 can be rotatably connected to the pen shell 11 through a bearing, the other end of the worm 2 penetrates through the accommodating groove 14 and is in transmission connection with a power output shaft of the driving motor 3, specifically, the radial section of the power output shaft of the driving motor 3 is in a D shape, a D-shaped assembling hole 22 is formed in the end portion of the worm 2 along the axial direction of the worm, and the power output shaft of the driving motor 3 is inserted into the D-shaped assembling hole 22 and is in interference fit with the D-shaped assembling hole 22, so that the transmission connection between the driving motor 3 and the worm 2 is formed;
when the device works, the plastic wire 5 is inserted into the material channel 12, the worm 2 is driven to rotate by the driving motor 3, the spiral teeth 21 on the worm 2 rotate to cut into the plastic wire 5 to drive the plastic wire 5 to spirally advance, the worm transmits power with a high reduction ratio, meanwhile, the tooth surface of one side, facing the nozzle 13, of the spiral teeth 21 is perpendicular to the axis of the worm 2, the direction of the force of the spiral teeth 21 is consistent with the advancing direction of the consumable when the spiral teeth act on the consumable, and no component force in other directions exists, referring to the stress analysis in fig. 5, when the tooth surface is an inclined surface, the inclined surface acts on the plastic wire 5, the component force in the vertical direction and the component force perpendicular to the direction of the inclined surface also exist, so that the pushing force of the plastic wire 5 is reduced to some; the meshing depth of the spiral teeth 21 of the worm is constant all the time, unlike the situation that the depth of the gear 4 is different when meshing the plastic wire 5, the consumable is pushed forward more stably.
The rotating speed of the driving motor 3 is not higher than 90rpm, the plastic wire 5 is easily damaged when the rotating speed is higher than 90rpm, and the rotating speed is limited, so that the plastic wire is protected.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (5)
1. The utility model provides a 3D drawing pen is with rotary-cut advance a silk mechanism, 3D drawing pen (1) is including a shell (11), and a material way (12) have been seted up along its length direction in the inside of this shell (11), the exit end intercommunication nozzle (13) of 3D drawing pen (1) of material way (12), its characterized in that: the rotary cutting wire feeding mechanism is arranged in an inner cavity of the pen shell (11) and comprises a worm (2) and a driving motor (3), the axial direction of the worm (2) is parallel to the length direction of the material channel (12), the worm (2) is provided with at least two spiral teeth (21), an accommodating groove (14) is formed in the pen shell (11) corresponding to the worm (2), one side of the accommodating groove (14) penetrates through the material channel (12), the worm (2) is arranged in the accommodating groove (14), the spiral teeth (21) of the worm extend into the material channel (12), the tooth surface of one side, facing the nozzle (13), of the spiral teeth (21) is perpendicular to the axis of the worm (2), and the tooth surface of one side, facing away from the nozzle (13), of the spiral teeth (21) is an inclined surface inclined from top to bottom;
one end of the worm (2) is rotatably connected to the pen shell (11), the other end of the worm penetrates through the accommodating groove (14) and is in transmission connection with a power output shaft of the driving motor (3), and the worm is driven by the driving motor (3) to rotate.
2. The rotary-cut wire feeding mechanism for the 3D drawing pen according to claim 1, characterized in that: the radial section of the power output shaft of the driving motor (3) is in a D shape, a D-shaped hole assembly hole (22) is formed in the end portion of the worm (2) along the axial direction of the worm, and the power output shaft of the driving motor (3) is inserted into the D-shaped hole assembly hole (22) so as to form transmission connection between the driving motor (3) and the worm (2).
3. The rotary-cut wire feeding mechanism for the 3D drawing pen according to claim 1, characterized in that: the thread pitch of the two spiral teeth (21) is 2mm, and the lead is 4 mm.
4. The rotary-cut wire feeding mechanism for the 3D drawing pen according to claim 1, characterized in that: the rotating speed of the driving motor (3) is not higher than 90 rpm.
5. The rotary-cut wire feeding mechanism for the 3D drawing pen according to claim 1, characterized in that: the included angle of the tooth surfaces of the two sides of the spiral tooth (21) in the axial direction of the worm (2) is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020796602.3U CN212684717U (en) | 2020-05-13 | 2020-05-13 | Rotary-cut wire feeding mechanism for 3D drawing pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020796602.3U CN212684717U (en) | 2020-05-13 | 2020-05-13 | Rotary-cut wire feeding mechanism for 3D drawing pen |
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| Publication Number | Publication Date |
|---|---|
| CN212684717U true CN212684717U (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020796602.3U Active CN212684717U (en) | 2020-05-13 | 2020-05-13 | Rotary-cut wire feeding mechanism for 3D drawing pen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022206741A1 (en) * | 2021-03-29 | 2022-10-06 | 江苏浩宇电子科技有限公司 | 3d printing pen having anti-rotation structure for consumable, and hot melter |
| WO2023065603A1 (en) * | 2021-10-22 | 2023-04-27 | 江苏浩宇电子科技有限公司 | 3d printing apparatus and rotary filament-feeding mechanism thereof |
-
2020
- 2020-05-13 CN CN202020796602.3U patent/CN212684717U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022206741A1 (en) * | 2021-03-29 | 2022-10-06 | 江苏浩宇电子科技有限公司 | 3d printing pen having anti-rotation structure for consumable, and hot melter |
| WO2023065603A1 (en) * | 2021-10-22 | 2023-04-27 | 江苏浩宇电子科技有限公司 | 3d printing apparatus and rotary filament-feeding mechanism thereof |
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