WO2019061927A1 - Cooling device and 3d printer - Google Patents

Abstract

A cooling device (100) and a 3D printer (200). The cooling device (100) comprises a sleeve tube (110) defining an accommodation space. The sleeve tube (110) is arranged therein with multiple channels extending axially from one end to the other end of the sleeve tube (110). The channel is provided therein with a partition member (111) extending from an open end to a closed end. The partition member (111) is spaced apart from the closed end, thereby forming a communication channel communicating a liquid feed channel (112) and a return flow channel (113). In an embodiment, a cooling medium flows in from a liquid feed channel (112) and flows out from the return flow channel (113), such that the flowing cooling medium realizes cooling of a fiber optic cable for transmission of a laser inside an operating cabinet and a laser emission device, thereby mitigating a problem in which fiber optic cables and laser emission devices of some existing 3D printers have poor heat dissipation performance, and thus are unable to be operated in a closed and high temperature environment for a long time to produce large shaped parts. The 3D printer (200) comprises the above cooling device (100) and thus has the above advantages.

Description

Cooling device and 3D printer Technical field

The present invention relates to the field of 3D printing technology, and in particular to a cooling device and a 3D printer.

Background technique

3D printer, also known as 3D printer (3DP), is a cumulative manufacturing technology, a machine for rapid prototyping. It is based on digital model files (CAD) and uses special wax, powdered metal or plastic. A technique for making a three-dimensional object by printing a layer of adhesive material, such as an adhesive material. At this stage, 3D printers are used to make products. Some systems use the "laser sintering" technique with powder particles as the print medium. The powder particles are laid on a mold tray to form a powder layer of a certain thickness, which is laser-cast into a specified shape.

Some existing 3D printers need to transmit high-energy, high-heat laser light to a laser emitting device through a fiber optic cable. The laser emitting device first couples high-energy, high-heat laser energy and then emits it. Therefore, the internal temperature of the fiber optic cable and the laser emitting device will rise rapidly, so that the fiber optic cable and the laser emitting device cannot be operated for a long time, and it is impossible to enter a closed area of a closed, higher temperature 3D printer. Processing operations to produce larger profiles. This has become the main reason why the 3D printing structure is small in size, and the process development and technical application cannot be widely promoted.

Summary of the invention

It is an object of the present invention to provide a cooling device which can effectively improve the heat dissipation of the optical fiber cable and the laser emitting device of some existing 3D printers, and can not enter a closed, high temperature environment for a long time to operate, and produce a larger volume of the shaped member. The phenomenon.

Another object of the present invention is to provide a 3D printer including the above-described cooling device.

Embodiments of the invention are implemented as follows:

A cooling device comprising a sleeve defining a receiving space; the sleeve is provided with a plurality of passages extending from one end to the other end in an axial direction thereof; the plurality of passages are arranged around the axis of the sleeve; The open end and the other end are closed ends; the passage is provided with a partition extending from the open end to the closed end; the partition divides the passage into parallel inlet and return passages; the partition is spaced from the closed end to form a communication a communication channel between the liquid channel and the return channel.

The cooling device provided by the present invention comprises a sleeve defining a receiving space; the sleeve is provided with a plurality of passages extending from one end to the other end in the axial direction thereof; the plurality of passages are arranged around the axis of the sleeve; One end is an open end and the other end is a closed end; the passage is provided with a partition extending from the open end to the closed end; the partition divides the passage into juxtaposed inlet and return passages; the partition is spaced apart from the closed end to form Connect the communication channel of the inlet channel and the return channel. During the implementation process, the cooling medium flows in through the liquid inlet channel, flows out from the return channel, and cools the fiber optic cable and the laser emitting device that transports the laser inside the working chamber through the flowing cooling medium to improve the optical fiber of the existing partial 3D printer. Cables and laser emitting devices are difficult to dissipate heat, and they cannot enter a closed, high-temperature environment for a long time to operate, producing a larger volume of components.

In an embodiment of the invention, the sleeve includes a first half sleeve and a second half sleeve; the first half sleeve and the second half sleeve are detachably fastened to define an accommodation space.

In an embodiment of the invention, the sleeve comprises an interconnected fiber optic cable covering section and a laser emitting device covering section along the axial direction of the sleeve; the fiber optic cable covering section is composed of a flexible material; and the open end is located in the optical fiber. The cable covering section is away from one end of the laser emitting device covering section; the closed end is located at one end of the laser emitting device away from the fiber cable covering section.

In an embodiment of the invention, the cooling device further includes an inlet pipe and a return pipe. The inlet pipe communicates with one end of the inlet passage near the open end, and the return pipe communicates with one end of the return passage near the open end.

In an embodiment of the present invention, the cooling device further includes a refrigerating device and a cooling liquid tank; the refrigerating device is connected to the cooling liquid tank for cooling the liquid in the cooling liquid tank; and the cooling liquid tank is provided with the returning tube The interface and the liquid drive connected to the inlet pipe.

In an embodiment of the present invention, the liquid driving device includes a liquid supply pump, a first connection pipe and a second connection pipe; one end of the first connection pipe is connected to the cooling liquid tank, and the other end is connected to the liquid inlet of the liquid supply pump; One end of the second nozzle is connected to the outlet of the liquid supply pump, and the other end is connected to the inlet pipe.

In an embodiment of the present invention, the cooling device further includes a relay member, the relay member is provided with a through hole; and the through hole is provided with a plurality of liquid inlet and return through holes on the relay member; The inlet through hole and the return through hole are alternately arranged. One end of the liquid inlet hole communicates with the liquid inlet pipe, and the other end of the liquid inlet hole communicates with the liquid inlet channel. One end of the return flow hole is in communication with the return pipe, and the other end of the return through hole is in communication with the return flow path.

In an embodiment of the present invention, one end of the liquid inlet through hole is provided with a first liquid inlet joint, the liquid inlet tube is connected with the first liquid inlet joint, and the other end of the liquid inlet through hole is provided with a second liquid inlet joint The inlet channel is connected to the second inlet connector. One end of the return flow hole is provided with a first return joint, the return pipe is connected with the first return joint; the other end of the return through hole is provided with a second return joint, and the return passage is connected with the second return joint.

In an embodiment of the invention, the relay component includes a first sub-relay and a second sub-relay, and the first sub-relay and the second sub-relay are detachably fastened to define Through hole.

A 3D printer includes a casing, a fiber optic cable, and the above-described cooling device; the fiber optic cable extends through the casing and extends into the casing; and the sleeve is sleeved on a portion of the fiber optic cable located in the casing.

The beneficial effects of the embodiments of the present invention are:

The cooling device provided by the present invention comprises a sleeve defining a receiving space; the sleeve is provided with a plurality of passages extending from one end to the other end in the axial direction thereof; the plurality of passages are arranged around the axis of the sleeve; One end is an open end and the other end is a closed end; the passage is provided with a partition extending from the open end to the closed end; the partition divides the passage into juxtaposed inlet and return passages; the partition is spaced apart from the closed end to form Connect the communication channel of the inlet channel and the return channel. During the implementation process, the cooling medium flows in through the liquid inlet channel, flows out from the return channel, and cools the fiber optic cable and the laser emitting device that transports the laser inside the working chamber through the flowing cooling medium to improve the optical fiber and laser of part of the 3D printer. The launching device is difficult to dissipate heat, and it is not possible to enter a closed, high-temperature environment to carry out operations for a long time to produce a larger-volume configuration.

Since the 3D printer provided by the present invention includes the above-described cooling device, it is possible to improve the heat dissipation of the optical fiber and the laser emitting device of a part of the 3D printer, and it is impossible to enter a closed, high-temperature environment for a long time to operate, and to produce a larger-volume configuration member.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings show only certain embodiments of the present invention, and therefore It should be seen as a limitation on the scope, and those skilled in the art can obtain other related drawings according to these drawings without any creative work.

1 is a schematic overall structural view of a cooling device provided in Embodiment 1 of the present invention;

2 is a schematic view showing the internal structure of a sleeve of a cooling device provided in Embodiment 1 of the present invention;

3 is a schematic view showing the arrangement of a sleeve of a cooling device provided in Embodiment 1 of the present invention;

4 is a schematic structural view of a relay member of a cooling device provided in Embodiment 1 of the present invention;

5 is a schematic structural diagram of a first sub-relay of a cooling device provided in Embodiment 1 of the present invention;

FIG. 6 is a schematic diagram of the overall structure of a 3D printer provided in Embodiment 2 of the present invention.

Icon: 100-cooling device; 110-sleeve; 111-separator; 112-inlet channel; 113-return channel; 114-first half-sleeve; 116-second half-sleeve; 117-fiber cable cover Section; 118-laser emitting device covering section; 119-mounting frame; 120-inlet pipe; 130-return pipe; 140-refrigeration device; 150-cooling liquid tank; 160-liquid driving device; 162-liquid supply pump; - first take-over; 166 - second take-over; 170 - repeater; 171 - through hole; 172 - first liquid inlet joint; 173 - second liquid inlet joint; 175 - first return joint; Connector; 177-first sub-relay; 178-second sub-relay; 200-3D printer; 210-chassis.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. The components of the embodiments of the invention, which are generally described and illustrated in the figures herein, may be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the invention in the claims All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the invention.

It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once an item is defined in one figure, it is not necessary to further define and explain it in the subsequent figures.

In the description of the embodiments of the present invention, it is to be noted that the orientation or positional relationship of the terms “upper”, “lower”, “inside”, “outside” and the like is based on the orientation or positional relationship shown in the drawings, or Is intended to be used to describe the invention and to simplify the description, and is not intended to indicate or imply that the device or component referred to has a particular orientation, is constructed and operated in a particular orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first", "second", and the like are used merely to distinguish a description, and are not to be construed as indicating or implying a relative importance.

In the description of the embodiments of the present invention, it should be noted that the terms "setting", "installing", and "connecting" should be understood in a broad sense unless explicitly stated and defined, for example, may be a fixed connection, or may be It is a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements. The specific meanings of the above terms in the embodiments of the present invention can be understood in a specific case for those skilled in the art.

Example 1:

1 is a schematic view showing the overall structure of a cooling device 100 according to Embodiment 1 of the present invention. FIG. 2 is a schematic view showing the internal structure of a sleeve 110 of a cooling device 100 according to Embodiment 1 of the present invention. Referring to FIG. 1 and in conjunction with FIG. 2, a cooling device 100 is provided in the embodiment, which includes a sleeve 110 defining a receiving space; the sleeve 110 is provided with a plurality of extending from one end to the other along its axial direction. a channel at one end; a plurality of channels are arranged around the axis of the sleeve 110; one end of the channel is an open end and the other end is a closed end; a channel 111 extending from the open end to the closed end is disposed in the channel; the partition 111 separates the channel The liquid inlet passage 112 and the return passage 113 are juxtaposed; the partition plate 111 is spaced apart from the closed end to form a communication passage communicating with the liquid inlet passage 112 and the return passage 113.

FIG. 3 is a schematic view showing the arrangement of the sleeve 110 of the cooling device 100 according to Embodiment 1 of the present invention. Referring to FIG. 3, in the present embodiment, the sleeve 110 includes a first half sleeve 114 and a second half sleeve 116; the first half sleeve 114 and the second half sleeve 116 are detachably fastened to define Accommodate space. The sleeve 110 is disposed to include a first half sleeve 114 and a second half sleeve 116; the first half sleeve 114 and the second half sleeve 116 are detachably fastened to facilitate disassembly and installation of the sleeve 110, Effectively simplify the user's operation process, thereby improving work efficiency.

It should be noted that, in the present embodiment, the sleeve 110 is disposed to include the first half sleeve 114 and the second half sleeve 116; the first half sleeve 114 and the second half sleeve 116 are detachably fastened. The disassembly and installation of the sleeve 110 is facilitated, and the operation process of the user is effectively simplified, thereby improving work efficiency. It can be understood that the structure of the sleeve 110 is not limited herein. In other specific embodiments, the sleeve 110 can also be set to other shapes according to the needs of the user.

In the present embodiment, the sleeve 110 includes an optical fiber cable covering section 117 and a laser emitting device covering section 118 connected to each other along the axial direction of the sleeve 110; the optical fiber cable covering section 117 is made of a flexible material and is bendable and swingable; The open end is located at one end of the fiber optic cable covering section 117 away from the laser emitting device covering section 118; the closed end is located at one end of the laser emitting apparatus away from the fiber optic cable covering section 117. The sleeve 110 is disposed to include a fiber optic cable covering section 117 and a laser emitting device covering section 118 connected to each other to facilitate cooling of the fiber optic cable and the laser emitting device that transport the laser inside the working chamber to improve the existing 3D printer 200. The fiber optic cable and the laser emitting device are difficult to dissipate heat, and it is easy to cause the burning of the fiber optic cable and the laser emitting device that transport the laser inside the working chamber. The fiber cable covering section 117 is designed as a flexible material, so that the fiber cable covering section 117 moves along with the fiber optic cable, realizing the real-time cooling of the fiber optic cable, and allowing the laser emitting device to swing through the optical fiber cable, and The processing operation is carried out in a wide range, and the working area of the 3D printer 200 and the volume value of the configuration member are increased.

It should be noted that, in this embodiment, the sleeve 110 is disposed to include the optical fiber cable covering section 117 and the laser emitting device covering section 118 connected to each other, so as to realize the optical fiber cable and laser emission for transmitting laser light to the working chamber. The cooling of the device is difficult to improve the heat dissipation of the optical fiber cable and the laser emitting device of the conventional 3D printer 200, and it is impossible to enter the closed, high-temperature environment for a long time to carry out the work. It can be understood that in other specific embodiments, the sleeve 110 can also be set to other forms according to the needs of the user.

It should be noted that, in this embodiment, the fiber cable covering section 117 is made of a flexible material to facilitate the fiber cable covering section 117 to move along with the fiber optic cable, thereby realizing real-time cooling of the fiber optic cable. It can be understood that in other specific embodiments, the fiber optic cable covering section 117 can also be made of other materials according to the needs of the user.

In the present embodiment, the outer side of the laser emitting device covering section 118 is provided with a mounting bracket 119 for mounting the laser emitting device to a suitable carrier.

It should be noted that, in the present embodiment, the mounting bracket 119 is provided for the purpose of facilitating the fixed mounting of the laser emitting device on a suitable carrier. It can be understood that, in other specific embodiments, the mounting bracket 119 may not be provided according to the needs of the user.

In the present embodiment, the cooling device 100 further includes an inlet pipe 120 and a return pipe 130. The inlet pipe 120 communicates with one end of the inlet passage 112 near the open end, and the return pipe 130 communicates with one end of the return passage 113 near the open end. The inlet pipe 120 is provided to facilitate the passage of the cooling medium into the inlet passage 112, and the return pipe 130 is provided to facilitate the discharge of the cooling medium in the return passage 113, thereby further realizing the flow of the cooling medium in the sleeve 110.

It should be noted that, in this embodiment, the inlet pipe 120 is provided to facilitate the passage of the cooling medium into the inlet passage 112, and the return pipe 130 is provided to facilitate the discharge of the cooling medium in the return passage 113, thereby further realizing the cooling medium. Flow in the sleeve 110. It can be understood that in other specific embodiments, the liquid inlet pipe 120 and the return pipe 130 may not be provided according to the needs of the user, and the liquid inlet device and the reflux discharge device in the prior art are used.

In the present embodiment, the cooling device 100 further includes a refrigerating device 140 and a cooling liquid tank 150; the refrigerating device 140 is connected to the cooling liquid tank 150 for cooling the liquid in the cooling liquid tank 150; the cooling liquid tank 150 is provided with a reflow The interface to which the tube 130 is connected, and the liquid drive unit 160 connected to the inlet tube 120. The cooling device 140 and the cooling liquid tank 150 are disposed. During the implementation, the cooling medium in the cooling liquid tank 150 is cooled by the cooling device 140, then introduced into the liquid inlet channel 112 through the liquid inlet pipe 120, and further flows into the return channel. 113, and then flows into the cooling liquid tank 150 through the return pipe 130, and the circulation is performed to achieve the cooling effect on the optical fiber cable and the laser emitting device. The cooling liquid tank 150 is provided with an interface connected to the return pipe 130, and a liquid driving device 160 connected to the liquid inlet pipe 120 for increasing the pressure of the cooling medium, facilitating the realization of the cooling medium in the liquid inlet passage 112 and the return passage 113. Fast flow in the middle to better achieve cooling.

It should be noted that, in this embodiment, the refrigerating device 140 and the cooling liquid tank 150 are disposed. During the implementation, the cooling medium in the cooling liquid tank 150 is circulated through the liquid inlet pipe 120 after being cooled by the refrigerating device 140. It enters the liquid inlet passage 112, further flows into the return passage 113, and then flows into the cooling liquid tank 150 through the return pipe 130, and is circulated to achieve cooling effect on the optical fiber cable and the laser emitting device. It can be understood that, in other specific embodiments, the cooling device 140 and the cooling liquid tank 150 may not be provided according to the needs of the user, and the cooling medium may be cooled by the existing refrigeration mechanism, or the liquid feeding may be realized by other means. A cooling medium is injected into the passage 112.

It should be noted that, in the present embodiment, the cooling liquid tank 150 is provided with an interface connected to the return pipe 130, and a liquid driving device 160 connected to the liquid inlet pipe 120 for increasing the pressure of the cooling medium. The cooling medium is rapidly flowed in the inlet passage 112 and the return passage 113 to better achieve the cooling effect. It can be understood that, in other specific embodiments, the liquid driving device 160 may not be disposed or the cooling medium may be quickly flowed in the liquid inlet channel 112 and the return channel 113 according to the needs of the user.

Optionally, in the present embodiment, the liquid driving device 160 includes a liquid supply pump 162, a first connection pipe 164 and a second connection pipe 166; one end of the first connection pipe 164 is connected to the cooling liquid tank 150, and the other end is connected to the liquid supply pump 162. The liquid inlet is connected; one end of the second nozzle 166 is connected to the outlet of the liquid supply pump 162, and the other end is connected to the inlet pipe 120. The first connecting pipe 164 is disposed to connect the liquid supply pump 162 to the cooling liquid tank 150, and the second connecting pipe 166 is disposed to realize the connection between the liquid supply pump 162 and the liquid inlet pipe 120, so that the cooling medium can be easily supplied when flowing out of the cooling liquid tank 150. The liquid pump 162 increases the pressure of the cooling medium to cause rapid flow in the inlet passage 112 and the return passage 113 to speed up the circulation and thereby better achieve the cooling effect.

It should be noted that, in this embodiment, the first connecting pipe 164 is disposed to realize the connection between the liquid supply pump 162 and the cooling liquid tank 150, and the second connecting pipe 166 is disposed to realize the connection between the liquid supply pump 162 and the liquid inlet pipe 120, so that the cooling medium is in the slave. When the cooling liquid tank 150 flows out, the pressure of the cooling medium is increased by the liquid supply pump 162, so that it flows rapidly in the liquid inlet passage 112 and the return passage 113, thereby accelerating the circulation, thereby further achieving the cooling effect. It can be understood that, in other specific embodiments, the liquid driving device 160 may be specifically set to other forms or other connection manners according to the needs of the user.

FIG. 4 is a schematic structural diagram of a relay member 170 of the cooling device 100 according to Embodiment 1 of the present invention. Referring to FIG. 4, in the embodiment, the cooling device 100 further includes a relay member 170. The relay member 170 is provided with a through hole 171. The through hole 171 is configured to receive the optical fiber cable and pass into the working chamber. A plurality of liquid inlet through holes and return through holes are formed in the relay member 170 around the through hole 171; the liquid inlet through holes and the return through holes are alternately arranged. One end of the inlet through hole communicates with the inlet pipe 120, and the other end of the inlet through hole communicates with the inlet passage 112. One end of the return flow hole communicates with the return pipe 130, and the other end of the return through hole communicates with the return flow path 113. The arrangement of the relay member 170 facilitates the installation of the inlet pipe 120 and the return pipe 130, thereby facilitating the flow of the cooling medium in the inlet passage 112 and the return passage 113; and the provision of the relay member 170 can effectively stabilize the inlet pipe 120 and the inlet. The connection of the liquid passage 112 stabilizes the connection of the return pipe 130 and the return passage 113, thereby improving the stability of the connection and thereby improving the safety performance of the cooling device 100. The through hole 171 in the relay member 170 is in close contact with the optical fiber cable, and the outer edge of the relay member 170 is densely connected with the casing of the 3D printer 200, and the effect of the sealed environment between the working room of the 3D printer 200 and the external environment is achieved. Solved the problem of circulation of cooling liquid.

It should be noted that, in this embodiment, the provision of the relay member 170 facilitates the installation of the inlet pipe 120 and the return pipe 130, thereby facilitating the flow of the cooling medium in the inlet passage 112 and the return passage 113; 170 can effectively stabilize the connection of the inlet pipe 120 and the inlet passage 112, stabilize the connection of the return pipe 130 and the return passage 113, improve the stability of the connection, and thereby improve the safety performance of the cooling device 100. It can be understood that in other specific embodiments, the relay 170 may not be provided according to the needs of the user.

Optionally, in this embodiment, one end of the liquid inlet through hole is provided with a first liquid inlet joint 172, the liquid inlet tube 120 is connected with the first liquid inlet joint 172, and the other end of the liquid inlet through hole is provided with a second feed. The liquid connection 173, the inlet passage 112 is connected to the second inlet connection 173. One end of the circulation hole is provided with a first return joint 175, the return pipe 130 is connected to the first return joint 175, the other end of the return through hole is provided with a second return joint 176, and the return passage 113 is connected to the second return joint 176. The first liquid inlet joint 172 is provided to facilitate the connection of the liquid inlet hole of the relay member 170 and the liquid inlet tube 120. The second liquid inlet joint 173 is provided to facilitate the inlet of the relay member 170 and the sleeve 110. The connection of the liquid channel 112. The provision of the first return joint 175 facilitates the connection of the return orifice of the relay member 170 to the return conduit 130, and the provision of the second return joint 176 facilitates the connection of the return through passage of the relay member 170 to the return passage 113 of the sleeve 110.

It should be noted that, in this embodiment, the first liquid inlet joint 172 is provided to facilitate the connection between the liquid inlet hole of the relay member 170 and the liquid inlet tube 120, and the second liquid inlet joint 173 is provided to facilitate the implementation of the relay member 170. The inlet through hole is connected to the inlet passage 112 of the sleeve 110. The first return joint 175 is provided to facilitate the connection of the return through hole of the relay member 170 to the return pipe 130, and the second return joint 176 is provided to facilitate the connection of the return through hole of the relay member 170 with the return passage 113 of the sleeve 110. It can be understood that, in other specific embodiments, one or more of the first liquid inlet joint 172, the second liquid inlet joint 173, the first return joint 175, and the second return joint 176 may not be disposed according to the needs of the user. One.

FIG. 5 is a schematic structural diagram of a first sub-relay 177 of the cooling device 100 according to Embodiment 1 of the present invention. Referring to FIG. 5, in the embodiment, the relay member 170 includes a first sub-relay 177 and a second sub-relay 178. The first sub-relay 177 and the second sub-receiver 178 are detachably Fastening to define the through hole 171. The relay member 170 is disposed to include a first sub-relay 177 and a second sub-relay 178, and the first sub-relay 177 and the second sub-relay 178 are detachably fastened to facilitate the relay. The installation and disassembly of the 170 effectively simplifies the user's operation and improves work efficiency.

It should be noted that, in this embodiment, the relay 170 is disposed to include a first sub-relay 177 and a second sub-relay 178, and the first sub-relay 177 and the second sub-relay 178. The detachable fastening facilitates the installation and disassembly of the relay member 170, thereby effectively simplifying the operation process of the user, thereby improving work efficiency. It can be understood that in other specific embodiments, the relay 170 can also be set to other forms according to the needs of the user.

The cooling device 100 provided by the present invention comprises a sleeve 110 defining a receiving space; the sleeve 110 is provided with a plurality of passages extending from one end to the other end in the axial direction thereof; the plurality of passages surround the sleeve 110 The axis is arranged; one end of the channel is an open end, and the other end is a closed end; a channel 111 extending from the open end to the closed end is disposed in the channel; the partition 111 partitions the channel into a parallel inlet channel 112 and a return channel 113; The partition plate 111 is spaced apart from the closed end to form a communication passage communicating with the liquid inlet passage 112 and the return passage 113. During the implementation process, the cooling medium flows in through the liquid inlet passage 112, flows out from the return passage 113, and cools the optical fiber cable and the laser emitting device that transports the laser inside the working chamber through the flowing cooling medium to improve the existing 3D printer 200. The fiber-optic cable and the laser-emitting device are difficult to dissipate heat, and it is not allowed to enter a closed, high-temperature environment for a long time to operate, and to produce a larger-volume configuration.

Example 2:

FIG. 6 is a schematic diagram of the overall structure of a 3D printer 200 provided in Embodiment 2 of the present invention. Referring to FIG. 6, an embodiment of the present invention further provides a 3D printer 200. The 3D printer 200 includes a casing 210, a fiber optic cable, and the above-described cooling device 100. The optical fiber cable extends through the casing 210 and extends to the casing. The sleeve 110 is sleeved on a portion of the fiber optic cable located in the casing 210.

Since the 3D printer 200 provided by the embodiment of the present invention includes the above-described cooling device 100, it is also possible to improve the heat dissipation of the optical fiber cable and the laser emitting device of the conventional 3D printer 200, and it is impossible to enter a closed, high-temperature environment for a long time to operate. The phenomenon of larger volumetric components.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (10)

A cooling device characterized by: The cooling device includes a sleeve defining a receiving space; the sleeve is provided with a plurality of passages extending from one end to the other end in an axial direction thereof; a plurality of the passages surround an axis of the sleeve Arranging; one end of the passage is an open end, and the other end is a closed end; the passage is provided with a partition extending from the open end to the closed end; the partition separating the passage into a side by side a liquid inlet passage and a return passage; the partition plate is spaced apart from the closed end to form a communication passage connecting the liquid inlet passage and the return passage. A cooling device according to claim 1 wherein: The sleeve includes a first half sleeve and a second half sleeve; the first half sleeve and the second half sleeve are detachably fastened to define the receiving space. A cooling device according to claim 1 wherein: In the axial direction of the sleeve, the sleeve includes an interconnected fiber optic cable covering section and a laser emitting device covering section; the fiber optic cable covering section is composed of a flexible material; the open end is located at the optical fiber line The cable covering section is remote from an end of the laser emitting device covering section; the closed end is located at an end of the laser emitting device away from the fiber cable covering section. A cooling device according to claim 1 wherein: The cooling device further includes an inlet pipe and a return pipe, wherein the inlet pipe communicates with one end of the inlet passage adjacent to the open end, and the return pipe communicates with one end of the return passage adjacent to the open end. A cooling device according to claim 4, wherein: The cooling device further includes a refrigerating device and a cooling liquid tank; the refrigerating device is connected to the cooling liquid tank for cooling the liquid in the cooling liquid tank; and the cooling liquid tank is provided with the returning tube a connected interface and a liquid drive connected to the inlet tube. A cooling device according to claim 5, wherein: The liquid driving device includes a liquid supply pump, a first connecting pipe and a second connecting pipe; one end of the first connecting pipe is connected to the cooling liquid tank, and the other end is connected to a liquid inlet of the liquid supply pump; One end of the two nozzles is connected to the outlet of the liquid supply pump, and the other end is connected to the inlet pipe. A cooling device according to claim 4, wherein: The cooling device further includes a relay member, the relay member is provided with a through hole; around the through hole, a plurality of liquid inlet and return through holes are formed in the relay member; a liquid through hole and the return through hole are alternately arranged; One end of the liquid inlet through hole is in communication with the liquid inlet pipe, and the other end of the liquid inlet through hole is in communication with the liquid inlet channel; One end of the return through hole is in communication with the return pipe, and the other end of the return through hole is in communication with the return passage. A cooling device according to claim 7, wherein: One end of the liquid inlet through hole is provided with a first liquid inlet joint, the liquid inlet tube is connected with the first liquid inlet joint; the other end of the liquid inlet through hole is provided with a second liquid inlet joint, a liquid inlet channel is connected to the second liquid inlet joint; One end of the return through hole is provided with a first return joint, the return line is connected to the first return joint; the other end of the return through hole is provided with a second return joint, the return passage and the first Two return connections are connected. A cooling device according to claim 7, wherein: The relay member includes a first sub-relay and a second sub-relay, and the first sub-relay and the second sub-relay are detachably fastened to define the through hole. A 3D printer characterized by: The 3D printer includes a casing, a fiber optic cable, and the cooling device of any one of claims 1-9; the fiber optic cable extends through the casing and extends into the casing; the sleeve The sleeve is disposed on a portion of the optical fiber cable located in the casing.

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