Blowing-type heat removal device for 3D printing nozzle

Abstract

The invention relates to the technical field of additive machining, and discloses a blowing-type heat removal device for a 3D printing sprayer, which comprises a nozzle, a supporting seat is fixedly connected to the outer wall of the nozzle, an optical axis is slidably connected to the inner wall of the supporting seat, a guide mechanism is arranged on the outer wall of the optical axis, and the blowing-type heat removal device further comprises a heat dissipation assembly arranged on the outer wall of the nozzle, the heat dissipation assembly comprises a heat dissipation block, and breathing holes are formed in the inner wall of the heat dissipation block; and the isolation assembly is arranged on the inner wall of the heat dissipation block and comprises a second isolation plate, a switching assembly is arranged on the outer wall of the second isolation plate, and the second isolation plate is used for isolating air in the heat dissipation block. According to the heat removal device, heat dissipation is conducted on the heat dissipation block in a breathing mode through the heat dissipation assembly, heat conduction is conducted on the spray head through solid conduction, the printer is prevented from generating vibration in the printing process, meanwhile, heat isolation is effectively conducted on the spray head, and the heat removal device can stably conduct heat dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of additive processing, and in particular to an air-blast type heat removal device for a 3D printing nozzle. Background Art

[0002] With the rapid development of 3D printing technology, the pursuit of printing efficiency and precision continues to rise. As the core component of 3D printing, the nozzle accumulates heat rapidly during high-speed and high-precision printing. In order to ensure the stable operation of the nozzle under various complex working conditions, maintain the precise extrusion of materials, and meet the growing needs of 3D printing process, the 3D printing nozzle has been developed with the help of a blast heat removal device. This device uses blast technology to efficiently remove the excess heat generated by the nozzle during operation, providing a strong guarantee for the stability and smoothness of the 3D printing process.

[0003] The patent application with application number CN201811620050.4 discloses a blast-type heat removal device for a 3D printing nozzle, wherein a heat-insulating seat is fixed between the heater and the feed pipe; a circular groove-shaped vacuum groove is formed inside the heat-insulating seat; a vacuum is evacuated inside the vacuum groove; a plurality of heat-removing ventilation ducts are formed on the heat-insulating seat which are evenly distributed around the circumference; the blast-type heat removal device comprises a plurality of air intake frames which are evenly distributed around the circumference; the air intake frames are fixed on the lower end surface of the movable support plate; and an air storage tank is formed inside the air intake frames.

[0004] The aerodynamic force generated by the blower-type heat removal device through sucking air will cause the nozzle to vibrate due to periodic exciting force, which will interfere with the smoothness of the nozzle movement and make it difficult to meet the dimensional accuracy and surface roughness of the 3D printed products. At the same time, when the ventilation duct draws air, the air conduction cannot significantly dissipate the heat of the nozzle due to the limited cavity volume, causing the printing material inside the nozzle to melt prematurely due to heat conduction, and the heat dissipation requirements cannot be fully met. Summary of the invention

[0005] The object of the present invention is to provide an air-blast heat removal device for a 3D printing nozzle to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a blast-type heat removal device for a 3D printing nozzle, comprising a nozzle, a heating block is fixedly connected to the outer wall of the nozzle, a support seat is fixedly connected to the outer wall of the nozzle, an optical axis is slidably connected to the inner wall of the support seat, a limiting sleeve is fixedly connected to the inner wall of the support seat, a spring is fixedly connected to the inner wall of the support seat, a guide mechanism is arranged on the outer wall of the optical axis, and further comprising:

[0007] A heat dissipation component, the heat dissipation component is arranged on the outer wall of the nozzle, the heat dissipation component includes a heat dissipation block, an isolation plate 1 is fixedly connected to the inner wall of the heat dissipation block, a guide plate is fixedly connected to the inner wall of the heat dissipation block, a breathing hole is opened on the inner wall of the heat dissipation block, a guide hole is opened on the outer wall of the heat dissipation block, and a limiting groove is opened on the outer wall of the guide plate;

[0008] The outer wall of the heat dissipation device is provided with a plurality of springs, each of which is provided with a plurality of springs, and the plurality of springs are provided with a plurality of springs.

[0009] According to the above technical solution, the guide mechanism includes a guide rod 1, the outer wall of the guide rod 1 is fixedly connected to a guide sleeve, the outer wall of the guide sleeve is provided with an air outlet, the inner wall of the guide sleeve is slidably connected to a block, the outer wall of the block is provided with a guide groove, the outer wall of the block is provided with a connecting hole 1, the outer wall of the block is fixedly connected to a spring 2, the other end of the spring 2 is fixedly connected to the inner wall of the guide sleeve, the guide rod 1 is used to drive the isolation plate 2 to squeeze the air inside the heat dissipation block, and the gas inside the heat dissipation block is pressurized through the guide mechanism to increase the air density and the air heat conduction efficiency, and effectively isolate the discharged heat exchange gas to prevent the hot gas from reflux and causing the temperature of the heat removal device to increase, thereby reducing the heat dissipation efficiency, ensuring that the heat dissipation efficiency is always maintained at a high level, and ensuring the stable operation of the 3D printing nozzle.

[0010] According to the above technical solution, the switching component includes a switching block, the outer wall of the switching block is fixedly connected to a connecting rod, the outer wall of the switching block is provided with a sliding groove, the switching block is used to switch the air intake of the breathing hole, and the gas inlet and outlet in the heat dissipation component is switched by the switching component, and fresh air is continuously supplied to the heat dissipation component to prevent hot air from being retained and causing the temperature of the heat dissipation component to rise, thereby avoiding adverse effects on the normal operation of the nozzle and effectively improving the heat dissipation efficiency of the heat removal device.

[0011] According to the above technical solution, the sliding groove wall is slidably connected with a pressure block, the inner wall of the pressure block is slidably connected with a sliding rod, the outer wall of the sliding rod is fixedly connected with a limiting plate, the outer wall of the limiting plate is fixedly connected with a spring four, the other end of the spring four is fixedly connected to the outer wall of the pressure block, and the pressure block is used to drive the switching block to slide on the outer wall of the guide plate.

[0012] According to the above technical solution, the inner wall of the heat dissipation block is fixedly connected to the outer wall of the nozzle, the outer wall of the second isolation plate is slidably connected to the inner wall of the heat dissipation block, the outer wall of the second isolation plate is fixedly connected to the outer wall of the guide sleeve, the inner wall of the second isolation plate is slidably connected to the outer wall of the guide plate, the outer wall of the isolation block is slidably connected to the inner wall of the second isolation plate, and there are two groups of isolation components, which are symmetrically arranged on the inner wall of the heat dissipation block with the center line of the heat dissipation block as the axis of symmetry, and the isolation block is used to release the pressure generated by the air inside the heat dissipation block squeezed by the second isolation plate.

[0013] According to the above technical solution, the guide sleeve is slidably connected to the wall of the guide hole, the inner wall of the guide rod is slidably connected to the outer wall of the optical axis, the outer wall of the guide rod is slidably connected to the inner wall of the limit sleeve, the outer wall of the guide rod is fixedly connected to the end of the spring away from the support seat, the number of the guide mechanisms is two groups, and the two groups of guide mechanisms are symmetrically arranged on the outer wall of the optical axis with the center line of the support seat as the symmetry axis, and the guide sleeve is used to discharge the air compressed by the isolation plate 2 inside the heat sink.

[0014] According to the above technical solution, the outer wall of the switching block is slidably connected to the outer wall of the guide plate, the outer wall of the connecting rod is slidably connected to the wall of the limiting groove, there are two groups of switching components, and the two groups of switching components are symmetrically arranged with the second center line of the isolation plate as the symmetry axis and the second outer wall of the isolation plate, and the connecting rod is used to guide and limit the switching block.

[0015] According to the above technical solution, the outer wall of the limiting plate is slidably connected to the wall of the assembly groove, and the sliding rod is used to support and limit the pressing block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The 3D printing nozzle uses a blast-type heat removal device, which dissipates heat from the heat sink in a breathing manner through the heat dissipation component, and effectively conducts heat exchange to the nozzle through solid conduction, thereby preventing the printer from vibrating during the printing process and effectively thermally isolating the nozzle, so that the heat removal device can dissipate heat stably.

[0018] 2. The 3D printing nozzle uses a blast-type heat removal device, which increases the pressure inside the heat dissipation component through the isolation component to increase the heat conduction efficiency, while increasing the flow rate of the heat dissipation gas to quickly take away the heat conducted by the solid, preventing the overall temperature of the heat removal device from being too high, resulting in a decrease in heat exchange efficiency, so that the heat removal device can quickly perform a cooling process.

[0019] 3. The 3D printing nozzle uses a blast-type heat removal device, which pressurizes the gas inside the heat sink through a guide mechanism to increase the air density and the air heat conduction efficiency, and effectively isolates the exhausted heat exchange gas to prevent the hot air from flowing back and causing the temperature of the heat removal device to rise, thereby reducing the heat dissipation efficiency, ensuring that the heat dissipation efficiency is always maintained at a high level, and ensuring the stable operation of the 3D printing nozzle.

[0020] 4. The 3D printing nozzle uses a blast-type heat removal device, which switches the gas in and out of the heat dissipation component by switching the component, continuously supplies fresh air to the heat dissipation component to prevent the heat from being retained and causing the temperature of the heat dissipation component to rise, thereby avoiding adverse effects on the normal operation of the nozzle and effectively improving the heat dissipation efficiency of the heat removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 The cross-sectional view of the present invention Figure 1 ;

[0023] Figure 3 The cross-sectional view of the present invention Figure 2 ;

[0024] Figure 4 is a cross-sectional view of the heat dissipation assembly of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the guide mechanism of the present invention;

[0026] Figure 6 is a cross-sectional view of the guide mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the isolation assembly of the present invention;

[0028] Figure 8 is a cross-sectional view of the switching assembly of the present invention;

[0029] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of center A.

[0030] In the figure: 1, nozzle; 101, heating block; 102, support seat; 103, optical axis; 104, limiting sleeve; 105, spring 1; 2, heat dissipation assembly; 201, heat dissipation block; 202, isolation plate 1; 203, guide plate; 204, breathing hole; 205, guide hole; 206, limiting groove; 3, guide mechanism; 301, guide rod 1; 302, guide sleeve; 303, air outlet; 304, stopper; 3 05, guide groove; 306, connecting hole one; 307, spring two; 4, isolation component; 401, isolation plate two; 402, guide rod two; 403, isolation block; 404, connecting hole two; 405, spring three; 406, assembly groove; 5, switching component; 501, switching block; 502, connecting rod; 503, sliding groove; 504, pressure block; 505, sliding rod; 506, limit plate; 507, spring four. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For example, see Figure 1-Figure 4 and Figure 7 The present invention provides a technical solution: a blast-type heat removal device for a 3D printing nozzle, comprising a nozzle 1, a heating block 101 is fixedly connected to the outer wall of the nozzle 1, a support seat 102 is fixedly connected to the outer wall of the nozzle 1, an optical axis 103 is slidably connected to the inner wall of the support seat 102, a limiting sleeve 104 is fixedly connected to the inner wall of the support seat 102, a spring 105 is fixedly connected to the inner wall of the support seat 102, and a guide mechanism 3 is arranged on the outer wall of the optical axis 103, and also includes:

[0033] The heat dissipation component 2 is arranged on the outer wall of the nozzle 1, and the heat dissipation component 2 includes a heat dissipation block 201, an isolation plate 202 is fixedly connected to the inner wall of the heat dissipation block 201, a guide plate 203 is fixedly connected to the inner wall of the heat dissipation block 201, a breathing hole 204 is opened on the inner wall of the heat dissipation block 201, a guide hole 205 is opened on the outer wall of the heat dissipation block 201, and a limiting groove 206 is opened on the outer wall of the guide plate 203;

[0034] The isolation component 4 is arranged on the inner wall of the heat sink 201. The isolation component 4 includes an isolation plate 2 401. The outer wall of the isolation plate 2 401 is fixedly connected with a guide rod 2 402. The outer wall of the guide rod 2 402 is slidably connected with an isolation block 403. The outer wall of the isolation block 403 is provided with a connection hole 2 404. The outer wall of the isolation plate 2 401 is provided with an assembly groove 406. The outer wall of the isolation block 403 is fixedly connected with a spring 3 405. The other end of the spring 3 405 is fixedly connected with the outer wall of the isolation plate 2 401. The outer wall of the isolation plate 2 401 is provided with a switching component 5. The isolation plate 2 401 is used to isolate the air inside the heat sink 201. When the blast heat removal device for the 3D printing nozzle is put into use, the support seat 102 Connected with the synchronous belt, the optical axis 103 serves as the Y axis of the 3D printer. The printing material is fed into the nozzle 1 from the top of the support seat 102, and slides on the outer wall of the optical axis 103 through the support seat 102 when the 3D printer is working. When the support seat 102 slides to the left on the outer wall of the optical axis 103, the guide mechanism 3 located on the right side of the heat sink 201 drives the corresponding isolation plate 2 401 to slide to the right on the inner wall of the heat sink 201, drives the switching component 5 to slide to the right, closes the breathing hole 204 of the cavity on the right side of the inner wall of the heat sink 201, and prevents air from entering. At the same time, the breathing hole 204 of the cavity on the left side of the inner wall of the heat sink 201 is opened, and the negative pressure generated by the cavity on the left side of the inner wall of the heat sink 201 allows air to pass through the heat sink 201. 01, the breathing hole 204 on the left side takes in air to cool the nozzle 1, and at the same time, the isolation plate 201 slides to the right on the inner wall of the heat sink 201 to pressurize the right part of the cavity on the inner wall of the heat sink 201, and the pressurized air drives the isolation block 403 to squeeze the spring 3 405 to slide on the outer wall of the guide rod 2 402, and connects the cavities on the left and right sides of the inner wall of the heat sink 201 through the connecting hole 2 404, so that the air with high pressure in the cavity on the right side of the heat sink 201 flows to the inside of the cavity on the left side, and the decompressed air can quickly cool down, and drive the gas flow in the cavity on the left side of the inner wall of the boost block 504 through a high flow rate, thereby increasing the heat conduction effect. At the same time, another set of guide mechanisms 3 located on the left side of the heat sink 201 drives the corresponding The corresponding isolation plate 2 401 slides to the right on the inner wall of the heat sink 201, and the breathing hole 204 on the right side of the inner wall of the heat sink 201 is closed by the switching component 5, so that the breathing hole 204 on the left side of the inner wall of the heat sink 201 is opened, and the isolation plate 2 401 slides to the right, so that the volume of the cavity on the left side of the inner wall of the heat sink 201 increases to form a negative pressure, so that fresh air enters from the breathing hole 204 on the left side of the inner wall of the heat sink 201. At the same time, the isolation plate 2 401 slides to the right on the inner wall of the heat sink 201 to pressurize the cavity on the right side of the inner wall of the heat sink 201, so that the air density is increased, and the heat conduction efficiency is increased. The pressurized air is discharged through the guide mechanism 3 to prevent the air from entering and exiting at the same place and causing hot air reflux;

[0035] The inner wall of the heat sink 201 is fixedly connected to the outer wall of the nozzle 1, the outer wall of the second isolation plate 401 is slidably connected to the inner wall of the heat sink 201, the outer wall of the second isolation plate 401 is fixedly connected to the outer wall of the guide sleeve 302, the inner wall of the second isolation plate 401 is slidably connected to the outer wall of the guide plate 203, the outer wall of the isolation block 403 is slidably connected to the inner wall of the second isolation plate 401, the number of isolation components 4 is two groups, and the two groups of isolation components 4 are symmetrically arranged on the inner wall of the heat sink 201 with the center line of the heat sink 201 as the symmetry axis. The isolation block 403 is used to release the pressure generated by the isolation plate 2 401 squeezing the air inside the heat sink 201, and the guide sleeve 302 is located on the right side of the heat sink 201. The mechanism 3 drives the corresponding isolation plate 2 401 to slide to the right on the inner wall of the heat sink 201, drives the switching component 5 to slide to the right, closes the breathing hole 204 of the cavity on the right side of the inner wall of the heat sink 201, and prevents air from entering. At the same time, the breathing hole 204 of the cavity on the left side of the inner wall of the heat sink 201 is opened, and the negative pressure generated by the cavity on the left side of the inner wall of the heat sink 201 allows air to enter through the breathing hole 204 on the left side of the heat sink 201 to cool the nozzle 1. At the same time, the isolation plate 2 401 slides to the right on the inner wall of the heat sink 201 to pressurize the cavity on the right side of the inner wall of the heat sink 201. The pressurized air drives the isolation plate 2 The block 403 squeezes the spring three 405 to slide on the outer wall of the guide rod two 402, and connects the cavities on the left and right sides of the inner wall of the heat dissipation block 201 through the connecting hole two 404, so that the air with high pressure in the cavity on the right side of the heat dissipation block 201 flows to the inside of the cavity on the left side, and the decompressed air can quickly cool down, and drive the gas flow in the cavity on the left side of the inner wall of the boost block 504 through the high flow rate, thereby increasing the heat conduction effect. When the support seat 102 slides to the right on the outer wall of the optical axis 103, the operation logic of each component is completely symmetrical with that when the support seat 102 slides to the left on the outer wall of the optical axis 103, and the guide mechanism 3 located on the left side of the heat dissipation block 201 drives the corresponding isolation plate two 4 01 slides to the left on the inner wall of the heat sink 201, driving the switching component 5 to slide to the left on the inner wall of the heat sink 201, closing the breathing hole 204 of the cavity on the left side of the inner wall of the heat sink 201 to prevent air intake. At the same time, the breathing hole 204 of the cavity on the right side of the inner wall of the heat sink 201 is opened, and the negative pressure generated by the cavity on the right side of the inner wall of the heat sink 201 allows air to enter through the breathing hole 204 on the right side of the heat sink 201 to cool the nozzle 1. The subsequent series of actions caused by the isolation plate 2 401 sliding to the left on the inner wall of the heat sink 201, such as cavity pressurization, gas flow, connection, pressure relief and cooling, are all mirror images of the sliding to the left.

[0036] Example 2, based on Example 1, please refer to Figure 5-Figure 6The present invention provides a technical solution: the guide mechanism 3 includes a guide rod 301, the outer wall of the guide rod 301 is fixedly connected to a guide sleeve 302, the outer wall of the guide sleeve 302 is provided with an air outlet 303, the inner wall of the guide sleeve 302 is slidably connected to a stopper 304, the outer wall of the stopper 304 is provided with a guide groove 305, the outer wall of the stopper 304 is provided with a connecting hole 306, the outer wall of the stopper 304 is fixedly connected to a spring 2 307, the other end of the spring 2 307 is connected to the inner wall of the guide sleeve 302 The guide rod 1 301 is fixedly connected to the wall, and the guide rod 1 301 is used to drive the isolation plate 2 401 to squeeze the air inside the heat sink 201. During the 3D printing process, the support seat 102 slides on the outer wall of the optical axis 103. When the support seat 102 slides to the left, the guide mechanism 3 located on the left side of the heat sink 201 drives the isolation plate 2 401 to slide to the right on the inner wall of the heat sink 201 through the friction between the guide rod 1 301 and the outer wall of the optical axis 103, and squeezes the air inside the heat sink 201 through the spring 2 307. The pressure block 304 causes the air outlet 303 to be misaligned with the connecting hole 1 306, preventing the isolation plate 201 from sliding to the right when the heat sink 201 slides to the right, causing air to enter from the inside of the guide sleeve 302, so that the air enters from the breathing hole 204 located on the left side of the inner wall of the heat sink 201, and the nozzle 1 is cooled by breathing. At the same time, the guide mechanism 3 located on the right side of the heat sink 201 drives the isolation plate 201 to slide to the right on the inner wall of the heat sink 201, and the cavity located on the right side of the inner wall of the heat sink 201 is pressurized through the isolation plate 201, so that the block 304 compresses the spring 2 307 to slide on the inner wall of the guide sleeve 302, so that the air outlet 303 coincides with the connecting hole 1 306, and the heat exchange gas in the cavity on the left side of the inner wall of the heat sink 201 is discharged. When the support seat 102 slides continuously in the same direction, the guide rod 1 301 is squeezed by the spring 105 to slide on the outer wall of the optical axis 103, so as to prevent the guide rod 1 301 from colliding with the support seat 102;

[0037] The guide sleeve 302 is slidably connected to the wall of the guide hole 205, the inner wall of the guide rod 301 is slidably connected to the outer wall of the optical axis 103, the outer wall of the guide rod 301 is slidably connected to the inner wall of the limit sleeve 104, the outer wall of the guide rod 301 is fixedly connected to the end of the spring 105 away from the support seat 102, the number of the guide mechanism 3 is two groups, and the two groups of guide mechanisms 3 are symmetrically arranged on the outer wall of the optical axis 103 with the center line of the support seat 102 as the symmetry axis. The guide sleeve 302 is used to discharge the air compressed by the isolation plate 201 inside the heat sink 201, and the isolation plate 201 pressurizes the cavity in the heat sink 201 close to the nozzle 1 side, so that the block 304 compresses the spring 2 307 to slide on the inner wall of the guide sleeve 302, so that the air outlet 303 coincides with the connecting hole 1 306, and the heat exchange gas inside the cavity on the left side of the inner wall of the heat sink 201 is discharged.

[0038] Example 3, based on Example 1 and Example 2, please refer to Figure 8-Figure 9The present invention provides a technical solution: the switching component 5 includes a switching block 501, the outer wall of the switching block 501 is fixedly connected with a connecting rod 502, the outer wall of the switching block 501 is provided with a sliding groove 503, the switching block 501 is used to switch the breathing hole 204 for air intake, when the support seat 102 slides on the outer wall of the optical axis 103, the guide mechanism 3 drives the isolation plate 2 401 to slide on the inner wall of the heat dissipation block 201, and the pressing block 504 is squeezed by the spring 407 to support the pressing block 504, so that the pressing block 504 drives the switching block 501 to slide on the outer wall of the guide plate 203 through the friction force on the inner wall of the sliding groove 503, the connecting rod 502 slides on the inner wall of the limiting groove 206, and the switching block 501 is limited, so that after the switching block 501 controls the breathing hole 204 to switch the air intake, the pressing block 504 continues to slide on the inner wall of the sliding groove 503 driven by the isolation plate 2 401;

[0039] The wall of the sliding groove 503 is slidably connected with a pressing block 504, the inner wall of the pressing block 504 is slidably connected with a sliding rod 505, the outer wall of the sliding rod 505 is fixedly connected with a limit plate 506, the outer wall of the limit plate 506 is fixedly connected with a spring four 507, the other end of the spring four 507 is fixedly connected to the outer wall of the pressing block 504, the pressing block 504 is used to drive the switching block 501 to slide on the outer wall of the guide plate 203, and the isolation plate 201 is in the process of sliding on the inner wall of the heat dissipation block 201. The spring four 507 squeezes the pressing block 504 to support the pressing block 504, so that the pressing block 504 drives the switching block 501 to slide on the outer wall of the guide plate 203 through the friction force on the inner wall of the sliding groove 503;

[0040] The outer wall of the switching block 501 is slidably connected to the outer wall of the guide plate 203, and the outer wall of the connecting rod 502 is slidably connected to the wall of the limiting groove 206. There are two groups of switching components 5. The two groups of switching components 5 are symmetrically arranged on the outer wall of the isolation plate 201 with the center line of the isolation plate 201 as the symmetry axis. The connecting rod 502 is used to guide and limit the switching block 501. The pressing block 504 drives the switching block 501 to slide on the outer wall of the guide plate 203 through the friction force on the inner wall of the sliding groove 503, so that the switching block 501 switches the breathing hole 204. At the same time, the connecting rod 502 slides on the inner wall of the limiting groove 206 to limit the switching block 501. After the switching block 501 controls the breathing hole 204 to switch the air intake, the pressing block 504 continues to slide on the inner wall of the sliding groove 503 driven by the isolation plate 201;

[0041] The outer wall of the limiting plate 506 is slidably connected to the wall of the assembly groove 406, and the sliding rod 505 is used to support and limit the pressing block 504. During the sliding process of the isolation plate 201, the sliding rod 505 supports and guides the pressing block 504, so that the spring 4 507 squeezes the pressing block 504, so that the pressing block 504 drives the switching block 501 to slide on the outer wall of the guide plate 203 through the friction force on the inner wall of the sliding groove 503.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blast heat removal device for a 3D printing nozzle, comprising a nozzle (1), wherein the outer wall of the nozzle (1) is fixedly connected to a heating block (101), the outer wall of the nozzle (1) is fixedly connected to a support seat (102), and the inner wall of the support seat (102) is slidably connected to an optical axis (103), characterized in that: The inner wall of the support seat (102) is fixedly connected to a limiting sleeve (104), the inner wall of the support seat (102) is fixedly connected to a spring 1 (105), the outer wall of the optical axis (103) is provided with a guide mechanism (3), and further comprises: A heat dissipation component (2), the heat dissipation component (2) being arranged on the outer wall of the nozzle (1), the heat dissipation component (2) comprising a heat dissipation block (201), an isolation plate (202) being fixedly connected to the inner wall of the heat dissipation block (201), a guide plate (203) being fixedly connected to the inner wall of the heat dissipation block (201), a breathing hole (204) being provided on the inner wall of the heat dissipation block (201), a guide hole (205) being provided on the outer wall of the heat dissipation block (201), and a limiting groove (206) being provided on the outer wall of the guide plate (203); An isolation component (4), the isolation component (4) being arranged on the inner wall of a heat sink (201), the isolation component (4) comprising an isolation plate 2 (401), the outer wall of the isolation plate 2 (401) being fixedly connected to a guide rod 2 (402), the outer wall of the guide rod 2 (402) being slidably connected to an isolation block (403), the outer wall of the isolation block (403) being provided with a connection hole 2 (404), the outer wall of the isolation plate 2 (401) being provided with an assembly groove (406), the outer wall of the isolation block (403) being fixedly connected to a spring 3 (405), the other end of the spring 3 (405) being fixedly connected to the outer wall of the isolation plate 2 (401), the outer wall of the isolation plate 2 (401) being provided with a switching component (5), and the isolation plate 2 (401) being used to isolate the air inside the heat sink (201).

2. The air-blast heat removal device for a 3D printing nozzle according to claim 1, characterized in that: The guide mechanism (3) comprises a guide rod 1 (301), the outer wall of the guide rod 1 (301) is fixedly connected to a guide sleeve (302), the outer wall of the guide sleeve (302) is provided with an air outlet (303), the inner wall of the guide sleeve (302) is slidably connected to a stopper (304), the outer wall of the stopper (304) is provided with a guide groove (305), the outer wall of the stopper (304) is provided with a connection hole 1 (306), the outer wall of the stopper (304) is fixedly connected to a spring 2 (307), the other end of the spring 2 (307) is fixedly connected to the inner wall of the guide sleeve (302), and the guide rod 1 (301) is used to drive the isolation plate 2 (401) to squeeze the air inside the heat sink (201).

3. The air-blast heat removal device for a 3D printing nozzle according to claim 1, characterized in that: The switching assembly (5) comprises a switching block (501), the outer wall of the switching block (501) is fixedly connected with a connecting rod (502), the outer wall of the switching block (501) is provided with a sliding groove (503), and the switching block (501) is used to switch the air intake of the breathing hole (204).

4. The air-blast heat removal device for a 3D printing nozzle according to claim 3, characterized in that: The sliding groove (503) is slidably connected to a pressing block (504) on its groove wall, the pressing block (504) is slidably connected to a sliding rod (505) on its inner wall, the sliding rod (505) is fixedly connected to a limiting plate (506) on its outer wall, the limiting plate (506) is fixedly connected to a spring four (507) on its outer wall, the other end of the spring four (507) is fixedly connected to the outer wall of the pressing block (504), and the pressing block (504) is used to drive the switching block (501) to slide on the outer wall of the guide plate (203).

5. The blast type heat removal device for a 3D printing nozzle according to claim 1, characterized in that: The inner wall of the heat dissipation block (201) is fixedly connected to the outer wall of the nozzle (1); the outer wall of the second isolation plate (401) is slidably connected to the inner wall of the heat dissipation block (201); the outer wall of the second isolation plate (401) is fixedly connected to the outer wall of the guide sleeve (302); the inner wall of the second isolation plate (401) is slidably connected to the outer wall of the guide plate (203); the outer wall of the isolation block (403) is slidably connected to the inner wall of the second isolation plate (401); the number of the isolation components (4) is two groups; the two groups of the isolation components (4) are symmetrically arranged on the inner wall of the heat dissipation block (201) with the center line of the heat dissipation block (201) as the symmetry axis; the isolation block (403) is used to release the pressure generated by the isolation plate (401) squeezing the air inside the heat dissipation block (201).

6. The air-blast heat removal device for a 3D printing nozzle according to claim 2, characterized in that: The guide sleeve (302) is slidably connected to the wall of the guide hole (205), the inner wall of the guide rod 1 (301) is slidably connected to the outer wall of the optical axis (103), the outer wall of the guide rod 1 (301) is slidably connected to the inner wall of the limit sleeve (104), the outer wall of the guide rod 1 (301) is fixedly connected to an end of the spring 1 (105) away from the support seat (102), the number of the guide mechanisms (3) is two groups, the two groups of the guide mechanisms (3) are symmetrically arranged on the outer wall of the optical axis (103) with the center line of the support seat (102) as the symmetry axis, and the guide sleeve (302) is used to discharge the air compressed by the isolation plate 2 (401) inside the heat sink (201).

7. The air-blast heat removal device for a 3D printing nozzle according to claim 3, characterized in that: The outer wall of the switching block (501) is slidably connected to the outer wall of the guide plate (203), and the outer wall of the connecting rod (502) is slidably connected to the groove wall of the limiting groove (206). The number of the switching components (5) is two groups, and the two groups of the switching components (5) are symmetrically arranged on the outer wall of the isolation plate 2 (401) with the center line of the isolation plate 2 (401) as the symmetry axis. The connecting rod (502) is used to guide and limit the switching block (501).

8. The air-blast heat removal device for a 3D printing nozzle according to claim 4, characterized in that: The outer wall of the limiting plate (506) is slidably connected to the groove wall of the assembly groove (406), and the sliding rod (505) is used to support and limit the pressing block (504).

Images