Cooling device of FDM 3D printer

Abstract

The invention discloses a heat dissipation device of an FDM 3D printer, and belongs to the technical field of printers. A forming platform drives a belt to move along a Y-axis motor, Y-axis freedom-degree movement is provided through the forming platform, and heating liquid is matched with the forming platform through a backflow pipe fitting and a pump in the heat dissipation process to achieve heat utilization; the function of preheating and softening materials in advance on a forming platform is achieved, the function of multi-direction automatic movement of the equipment cannot be achieved, it can be seen through figure 1 that a spray head, a throat pipe and a feeding gear can be driven by driving of multiple sets of motors, lead screws and belts to conduct freedom-degree movement in the X direction and the Z direction, and the function of multi-direction free movement can be achieved; in the prior art, the functions of limiting, falling off and shifting wound pipe fittings cannot be achieved, it can be known through the figure 1 and figure 6 that the pipe fittings are evenly fixed to the original winding positions through pipe fitting limiting and connecting rods, heat dissipation is achieved, and meanwhile the function that the pipe fittings slide off or shift caused by long-term use of the pipe fittings can be effectively prevented.

Description

Technical Field

[0001] The invention relates to a heat dissipation device for an FDM 3D printer, in particular to a heat dissipation device, and belongs to the technical field of printers. Background Art

[0002] At present, most civilian 3D printers are designed and developed based on the principle of FDM fused deposition printing. The principle of FDM is to melt the plastic filament and extrude it from the nozzle, extrude the filament according to the planned path, and gradually cool and solidify to form a three-dimensional product. The commonly used materials for FDM are PLA or ABS. The nozzle needs to be heated to 190-210℃ to heat the molten PLA material, while the nozzle needs to be heated to a high temperature of 210-250℃ to heat the molten ABS material. The extruded high-temperature molten plastic filament is piled up on the molding platform as needed and cooled and formed. During the cooling process, due to the phenomenon of cold shrinkage and thermal expansion, the cooled product will shrink, resulting in the bottom warping of the product and even the separation of the product from the molding platform. Therefore, in order to reduce the warping deformation phenomenon and minimize the temperature difference between the extruded filament and the printing environment, the platform needs to be heated to 50-60℃ during the printing process. Therefore, the nozzle and the molding platform are the components that need to be heated in the FDM3D printer, and heating requires a lot of electricity.

[0003] For example, a 3D printer heat dissipation device disclosed in application number: 201811218771.2 includes a device body, a first guide rod is welded to the bottom of the inner wall of the device body, a second spur rack is sleeved on the outer side of the first guide rod, a rectangular through hole is opened on one side of the device body, through holes are opened on both sides of the inner wall of the rectangular through hole, a first connecting rod is arranged inside the through holes on both sides of the inner wall of the rectangular through hole, a second gear is welded to the other end of the first connecting rod, the second gear is meshed with the second spur rack, the number of the second gears is five, and a shielding plate is welded to the outer side of the first connecting rod. Generally speaking, this device improves the service life of the 3D printer, realizes automatic ventilation inside the device body, and reduces the internal temperature of the device body.

[0004] Based on the search and analysis, we concluded that there are still deficiencies in the existing technology: 1. In the prior art, the air cooling treatment is used. Compared with the heat dissipation by contact circulation between the pipe and the equipment in the present application, the temperature difference between the molding table and the material in the prior art is large, which will cause the product to warp. Compared with the present application, the prior art has high energy consumption and poor heat dissipation, and cannot prevent warping; 2. The driving parts in the prior art will generate a lot of heat energy and reverse heating during use. Compared with the device in the present application, which is wrapped with a heat pipe and a heat dissipation nozzle for heat dissipation, the prior art in the present application cannot avoid the reverse heating of the driving parts, resulting in a higher temperature. 3. The pipe fittings in the prior art are mostly supported by the load-bearing force of the pipe fittings themselves during use. Compared with the pipe fitting positioning support assembly in the present application, the pipe fittings in the prior art have a shorter service life and are easily deformed, which affects the quality and efficiency of heat dissipation; 4. The prior art cannot realize real-time detection of the moving height during the sound test. Compared with the height detection part in the present application that detects the moving height, the prior art cannot perform visual operation on the moving height. Therefore, a FDM3D printer heat dissipation device is needed to improve the above-mentioned deficiencies. Summary of the invention

[0005] The main purpose of the present invention is to provide a heat dissipation device for an FDM 3D printer. Because the prior art cannot realize that the driving parts of the device will generate heat during use, and the prior art cannot cool the driving device, the device cannot dissipate heat, which will cause reverse heating in the device. Figure 1 , Figure 3 and Figure 4 It can be seen that the device adopts a reasonable combination of a control pump assembly, a pipe winding assembly and an operating table assembly to realize the function of circulating liquid cooling outside the device and effectively prevent the reverse heating function. Because the prior art cannot realize the problem of warping of the products produced by the molding platform due to the large temperature difference during use, the present invention solves the problem of warping of the products produced by the molding platform by Figure 1 and Figure 2 It can be seen that in the process of heat dissipation, the device uses the heating liquid through the reflux pipe, pump and molding platform to cooperate with each other to achieve heat utilization, and preheat the molding platform to soften the material in advance. The prior art cannot realize the function of the device to automatically move in multiple directions. Figure 1 It can be seen that the nozzle, throat and feeding gear can be driven by multiple sets of motors, lead screws and belts to move freely along the X and Z directions, and the function of free movement in multiple directions can be achieved. During the movement, the height detection part 1 and the height detection part 2 on the lead screw can be used to detect the moving height. The prior art cannot realize the function of limiting, falling off and shifting the wound pipe. The present invention can realize the function of limiting, falling off and shifting the wound pipe. Figure 1 and Figure 6 It can be seen that the pipe fittings are evenly fixed at the originally wound position by the pipe fitting limiter and the connecting rod, which can effectively prevent the pipe fittings from slipping or shifting due to long-term use while dissipating heat.

[0006] The purpose of the present invention can be achieved by adopting the following technical solutions: A heat dissipation device for an FDM 3D printer, comprising a heat dissipation element body for circulating heat dissipation A pump for heat management is installed on the heat sink body, and liquid-conducting pipelines are installed at both ends of the butterfly valve; The connection of the pipeline is controlled by a butterfly valve; The butterfly valve is respectively equipped with a motor for driving the limit, a motor 1 and a motor 2, and a lead screw is installed at the output ends of the motor, the motor 1 and the motor 2; The forming platform is installed on the belt, and the forming platform moves along the belt driven by the Y-axis motor, providing Y-axis freedom of movement through the forming platform; The lead screw is installed vertically on the motor 1 and the motor 2 of the Z axis, and a sliding sleeve is provided on the lead screw, and the sliding sleeve can move up and down along the lead screw; A height detection component 1 and a height detection component 2 are respectively vertically mounted on the motor 1 and the motor 2, and when the sliding sleeve moves up and down along the lead screw, the height of the movement is detected by the height detection component 1 and the height detection component 2.

[0007] Preferably, the motor on the X-axis is mounted on a lead screw and is moved through a belt nozzle, a throat and a feed gear to provide the nozzle with X and Z degrees of freedom.

[0008] Preferably, the pump is the core of the thermal management system, each pipeline starts from the pump, and the pipeline is wound on the surface of the heat dissipation object.

[0009] Preferably, the surface heat is taken away and input to the inlet end of the forming platform, and the pipeline is connected back to the pump.

[0010] Preferably, the pump transports the heat-conducting medium to each heating element through each pipeline, and each pipeline is tightly wound around the surface of the corresponding heating element for multiple turns.

[0011] Preferably, the heat-conducting medium in the pipeline carries heat into the molding platform, and the molding platform is embedded with tortuous and closely packed pipelines. Preferably, the heat of the heat-conducting medium is transferred to the molding platform, and the heat-conducting medium flows into the pump from the outlet end of the molding platform, and this cycle is repeated, and a printed product is arranged on the molding platform.

[0012] Preferably, a butterfly valve is provided on the pipeline, and the butterfly valve is used to control the opening and closing and the opening degree of the water channel.

[0013] Preferably, the heat of the nozzle melts the consumables, and the two sets of feeding gears are limitedly rotated in opposite directions to feed the materials through a limited rotating rod.

[0014] Preferably, the pipe fittings passing through the outer walls of the motor one and the motor two are positioned and connected by pipe fitting limiters and connecting rods, and anti-slip mats are laid inside the pipe fitting limiters.

[0015] Beneficial technical effects of the present invention: The present invention provides a heat dissipation device for an FDM 3D printer. Because the prior art cannot realize that the driving parts of the device will generate heat during use, and the prior art cannot cool the driving device, the device cannot dissipate heat, which will cause reverse heating in the device. Figure 1 , Figure 3 and Figure 4 It can be seen that the device adopts a reasonable combination of a control pump assembly, a pipe winding assembly and an operating table assembly to realize the function of circulating liquid cooling outside the device and effectively prevent the reverse heating function. Because the prior art cannot realize the problem of warping of the products produced by the molding platform due to the large temperature difference during use, the present invention solves the problem of warping of the products produced by the molding platform by Figure 1 and Figure 2 It can be seen that in the process of heat dissipation, the device uses the heating liquid through the reflux pipe, pump and molding platform to cooperate with each other to achieve heat utilization, and preheat the molding platform to soften the material in advance. The prior art cannot realize the function of the device to automatically move in multiple directions. Figure 1 It can be seen that the nozzle, throat and feeding gear can be driven by multiple sets of motors, lead screws and belts to move freely along the X and Z directions, and the function of free movement in multiple directions can be achieved. During the movement, the height detection part 1 and the height detection part 2 on the lead screw can be used to detect the moving height. The prior art cannot realize the function of limiting, falling off and shifting the wound pipe. The present invention can realize the function of limiting, falling off and shifting the wound pipe. Figure 1 and Figure 6 It can be seen that the pipe fittings are evenly fixed at the originally wound position by the pipe fitting limiter and the connecting rod, which can effectively prevent the pipe fittings from slipping or shifting due to long-term use while dissipating heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of the overall structure of a preferred embodiment of a heat dissipation device for an FDM 3D printer according to the present invention; Figure 2 It is an enlarged structural diagram of location A of a preferred embodiment of a heat dissipation device for an FDM 3D printer according to the present invention; Figure 3 A schematic diagram of a liquid-conducting winding structure of a preferred embodiment of a heat dissipation device for an FDM 3D printer according to the present invention; Figure 4 It is an enlarged structural diagram of location A of a preferred embodiment of a heat dissipation device for an FDM 3D printer according to the present invention; Figure 5 A schematic diagram of a pump connection structure of a preferred embodiment of a heat dissipation device for an FDM 3D printer according to the present invention; Figure 6The figure is a schematic diagram of a heat dissipation pipe limiting structure according to a preferred embodiment of a heat dissipation device for an FDM 3D printer according to the present invention.

[0017] In the figure: 1-butterfly valve, 2-pipeline, 3-screw, 4-consumables, 5-feeding gear, 6-throat, 7-nozzle, 8-motor, 9-printed product, 10-molding platform, 11-pump, 12-belt, 13-limiting rotating rod, 14-motor 1, 15-motor 2, 16-heat dissipation component body, 17-pipe limit, 18-connecting rod, 19-anti-slip pad, 20-sliding sleeve, 21-height detection component 1, 22-height detection component 2. DETAILED DESCRIPTION

[0018] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0019] Compared with the prior art, we believe that the present invention specifically provides four aspects of improved technology, which we list in a general way: Improvement plan 1: Because the prior art cannot realize that the driving parts of the device will generate heat during use, and the prior art cannot cool the driving device, the device cannot dissipate heat, which will cause reverse heating in the device. Figure 1 , Figure 3 and Figure 4 It can be seen that the device adopts a reasonable combination of a control pump component, a pipe winding component and an operating table component to realize the function of liquid circulation cooling outside the equipment and effectively prevent the function of reverse heating.

[0020] Improvement plan 2: Because the prior art cannot solve the problem of warping of the products produced by the molding platform due to the large temperature difference during use, the present invention solves the problem of warping of the products produced by the molding platform by Figure 1 and Figure 2 It can be seen that during the heat dissipation process, the device uses the heating liquid through the reflux pipe 2, the pump 11 and the molding platform 10 to cooperate with each other to achieve heat utilization, and preheats the molding platform 10 in advance to soften the material in advance.

[0021] Improvement plan 3: The prior art cannot realize the function of the device to automatically move in multiple directions. Figure 1 It can be seen that the nozzle, throat and feeding gear can be driven by multiple sets of motors, lead screws and belts to move freely along the X and Z directions, so as to achieve the function of free movement in multiple directions. During the movement, the height detection part 1 21 and the height detection part 2 22 on the lead screw 3 can be used to detect the moving height.

[0022] Improvement plan 4: The prior art cannot realize the functions of limiting, dropping and shifting the wound pipes. Figure 1 and Figure 6 It can be seen that the pipe fitting 2 is evenly fixed at the original winding position by the pipe fitting limiter 17 and the connecting rod 18, which can effectively prevent the pipe fitting 2 from slipping or shifting due to long-term use while dissipating heat.

[0023] In summary, the present invention has an integrated improved technical solution, through Figure 1-6 It can be seen that the listed improvement schemes 1-4 are organically combined together to form an integrated device that achieves high heat dissipation, strong flexibility and anti-pipe displacement functions.

[0024] We will discuss and explain the improvement plan 1 listed above in detail: Through Figure 1 and Figure 3 It can be seen from the observation that the pump 11 is the core of the thermal management system. Each pipeline starts from the pump. The cooling pipeline 2 is evenly wound on the surface of the heat dissipation object. During the injection process, it can carry away the heat generated on the surface of the equipment and input the heat to the inlet end of the forming platform 10. The pipeline 2 is connected back to the pump 11. The medium flowing in the entire thermal management system is a medium with a certain thermal conductivity and fluidity. The pump 11 transports the heat-conducting medium to each heating element through each pipeline 2.

[0025] We will discuss and explain the improvement plan 2 listed above in detail: pass Figure 1 , Figure 3 and Figure 4 It can be known that the present invention transfers the heat of the heating element to the heat-conducting medium after each pipeline is tightly wound around the surface of the corresponding heating element for multiple turns. Then, the heat in the equipment is carried into the forming platform 10 by the heat-conducting medium in each pipeline. The inside of the forming platform 10 is embedded with tortuous and closely packed pipelines 2. The heat of the heat-conducting medium is transferred to the forming platform 10, so that it itself has a certain temperature, which can effectively reduce the problem of product warping during the printing process. The heat-conducting medium that has lost most of its heat flows into the pump 11 from the outlet end of the forming platform 10, and this cycle is repeated. The forming platform 10 of the 3D printer using a thermal management system does not need electricity for heating, and can completely rely on the heat of other heating components to transmit heat, so that it can be preheated in advance, thereby achieving the purpose of reducing the warping and deformation of the printed products.

[0026] We will discuss and explain the improvement plan 3 listed above in detail: pass Figure 1It can be seen that the forming platform 10 of the present invention is installed on the belt 12, and the belt 12 is driven by the motor on the Y-axis to move, providing the forming platform 10 with Y-axis freedom of movement during the movement; the screw 3 is vertically installed on the Z-axis motor, and the X-axis motor is installed on the screw 3. The belt 12 drives the nozzle 7, the throat 6 and the feeding gear 5 to move, providing the nozzle 7 with X and Z-axis freedom of movement.

[0027] We will discuss and explain the improvement plan 3 listed above in detail: pass Figure 1 and Figure 6 It can be seen that the pipe fittings 2 covering the motor 14 and the motor 2 15 are evenly fixed on the motor 14 and the motor 2 15 by the pipe fitting limiter 17, the connecting rod 18 and the anti-skid pad 19. The anti-skid pad 19 laid on the inner wall of the pipe fitting limiter 17 can effectively prevent the pipe fittings 2 from slipping, which can prevent the pipe fittings 2 from shifting when they are used for too long, and can effectively prevent the pipe fittings 2 from slipping or shifting due to long-term use.

[0028] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A heat dissipation device for a FDM 3D printer, comprising a heat dissipation element body (16) for circulating heat dissipation Features: A pump (11) for heat management is installed on the heat sink body (16), and liquid-conducting pipes (2) are installed at both ends of the butterfly valve (1). The connection of the pipeline (2) is controlled by a butterfly valve (1); A motor (8), a motor 1 (14) and a motor 2 (15) for driving a limit position are respectively installed on the butterfly valve (1), and a lead screw (3) is installed at the output ends of the motor (8), the motor 1 (14) and the motor 2 (15); The molding platform (10) is mounted on a belt (12), and the molding platform (10) drives the belt (12) to move along a Y-axis motor, thereby providing Y-axis freedom of movement through the molding platform (10); The lead screw (3) is vertically mounted on the motor 1 (14) and the motor 2 (15) of the Z axis, and a sliding sleeve (20) is sleeved on the lead screw (3), and the sliding sleeve (20) can move up and down along the lead screw (3); A height detection component 1 (21) and a height detection component 2 (22) are respectively vertically mounted on the motor 1 (14) and the motor 2 (15), and when the sliding sleeve (20) moves up and down along the lead screw (3), the height of the movement is detected by the height detection component 1 (21) and the height detection component 2 (22).

2. The FDM 3D printer heat dissipation device according to claim 1, characterized in that: The motor (8) on the X-axis is mounted on the lead screw and is moved through the belt nozzle (7), the throat (6) and the feed gear (5) to provide the nozzle (7) with X and Z degrees of freedom.

3. The heat dissipation device of a FDM 3D printer according to claim 1, characterized in that: The pump (11) is the core of the thermal management system. Each pipeline (2) starts from the pump (11), and the pipeline (2) is wound on the surface of the heat dissipation object.

4. The FDM 3D printer heat dissipation device according to claim 3, characterized in that: The surface heat is carried away and input to the inlet end of the molding platform, and the pipeline (2) is connected back to the pump (11).

5. The heat dissipation device of a FDM 3D printer according to claim 4, characterized in that: The pump (11) transports the heat-conducting medium to each heating element through each pipeline (2), and each pipeline (2) is tightly wound multiple times around the surface of the corresponding heating element.

6. The heat dissipation device of a FDM 3D printer according to claim 5, characterized in that: The heat-conducting medium in the pipeline (2) carries heat and enters the molding platform (10), and the molding platform (10) is embedded with the pipeline (2) which is densely packed in a tortuous manner.

7. The heat dissipation device of a FDM 3D printer according to claim 6, characterized in that: The heat of the heat-conducting medium is transferred to the molding platform (10), and the heat-conducting medium flows from the outlet end of the molding platform (10) into the pump (11), and this cycle is repeated. A printed product (9) is provided on the molding platform (10).

8. The heat dissipation device of a FDM 3D printer according to claim 6, characterized in that: A butterfly valve (1) is provided on the pipeline (2), and the butterfly valve (1) is used to control the opening and closing and the opening degree of the water channel.

9. The heat dissipation device of a FDM 3D printer according to claim 8, characterized in that: The heat of the nozzle (7) melts the consumable material (4), and the two sets of feeding gears (5) are limitedly rotated in opposite directions to feed the materials through the limited rotation rod (13).

10. The heat dissipation device of a FDM 3D printer according to claim 8, characterized in that: The pipe fittings (2) passing through the outer walls of the motor 1 (14) and the motor 2 (15) are positioned and connected via a pipe fitting stopper (17) and a connecting rod (18), and an anti-slip pad (19) is laid inside the pipe fitting stopper (17).

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