Diode heat dissipation press-fitting structure

Abstract

The invention relates to the technical field of diode welding, in particular to a diode heat dissipation press-fitting structure which comprises a welding gun head, an assembly hole is upwards formed in the bottom end of the welding gun head, a heat conduction sleeve is filled in the assembly hole, a copper sleeve is fixed to the bottom end of the welding gun head, and the copper sleeve is fixed to the bottom end of the welding gun head. A mounting hole is formed in the heat conduction sleeve, a buffer cavity vertically communicated with the mounting hole is formed in the copper sleeve, a welding nozzle is arranged in the buffer cavity, the top end of the welding nozzle penetrates through the mounting hole to enter the heat conduction sleeve, the bottom end of the welding nozzle penetrates out of the bottom end of the copper sleeve, and a blocking piece assembled in the buffer cavity in a sliding mode is fixed to the welding nozzle. The buffer cavity is filled with the spring sleeved on the periphery of the welding nozzle, and the body of the diode is pressed by the falling pressing cover during welding, so that the pins cannot be separated from the lead holes on the circuit board, the body of the diode cannot deviate, and the welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of diode welding, and in particular to a diode heat dissipation press-fit structure. Background Art

[0002] Diodes are used in electronic circuits and are mostly welded on circuit boards. They form a complete circuit after being welded with various components on the circuit board, such as common rectifier circuits, resistor circuits, etc. In order to weld the diode to the circuit board, the commonly used technical means is to insert the pins of the diode into the circuit board first, and then weld the pins into the circuit through the welding gun head. Therefore, the welding gun head is an auxiliary electrical appliance for welding components such as diodes to the circuit board.

[0003] The diode has two pins (a positive pin and a negative pin). When one pin is welded, the diode will move, causing the other pin to fall off or deflect from the socket. A lot of thick smoke will also be generated during welding. Therefore, how to ensure that the diode pins do not move during welding and how to reduce smoke emissions are the problems to be solved at present. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a diode heat dissipation press-fitting structure, including a welding gun head, an assembly hole is opened upward from the bottom end of the welding gun head, the assembly hole is filled with a heat-conducting sleeve, a copper sleeve is fixed to the bottom end of the welding gun head, a buffer cavity is provided in the copper sleeve and is communicated with the assembly hole from top to bottom, a welding nozzle is provided in the buffer cavity, the top end of the welding nozzle passes through the assembly hole and enters the heat-conducting sleeve, the bottom end of the welding nozzle passes through the bottom end of the copper sleeve, a baffle slidably assembled in the buffer cavity is fixed on the welding nozzle, the buffer cavity is filled with a spring sleeved on the periphery of the welding nozzle, the end of the spring is on the top of the buffer cavity, and the bottom end of the spring is on the baffle;

[0005] A press-fitting mechanism is installed on the welding gun head, and the press-fitting mechanism includes a shield fixed on the bottom end of the welding gun head, and also includes a pressure shield sleeved on the shield, the shield and the pressure shield cover the periphery of the welding nozzle, and the bottom end length of the pressure shield exceeds the bottom end of the welding nozzle; a heat dissipation mechanism is installed on the welding gun head, and the heat dissipation mechanism includes a dust suction fan fixed on the outside of the shield, the heat dissipation mechanism also includes a main pipe fixed on the inside of the shield, and the heat dissipation mechanism also includes a dust suction pipe fixed on the main pipe, one end of the dust suction pipe is upward Connected to the main pipe, the other end of the dust suction pipe is bent downward and close to the welding nozzle, the air inlet end of the main pipe is connected to the air inlet of the dust suction fan through a pipeline, the baffle cover is provided with a taper that gradually tilts downward, the pressure cover is a cylindrical cover, the inner diameter of the pressure cover is consistent with the diameter of the small end of the taper of the baffle cover, when the pressure cover rises along the tapered surface of the baffle cover, the baffle cover radially contracts, a lifting plate is provided in the baffle cover, the outer cylindrical surface of the lifting plate slides in contact with the tapered inner wall surface of the baffle cover, and the dust suction pipe runs through the lifting plate.

[0006] As a further preferred embodiment, the main pipe is annular, and there are a plurality of dust suction pipes, which are installed on the main pipe in a ring-shaped array. A circle of sliding holes is provided in the ring-shaped array on the lifting plate, and each of the dust suction pipes passes through one of the sliding holes. The bending direction and degree of bending of each of the dust suction pipes are consistent. The dust suction pipes are metal bellows, and a suction head is installed at the bottom end of each of the dust suction pipes.

[0007] As a further preferred embodiment, a sleeve hole is opened inside the lifting plate, and the sleeve hole is sleeved on the copper sleeve.

[0008] As further preferred, a first inclined surface is formed at the bottom end of the welding nozzle, and a second inclined surface is formed at the bottom end of the pressure cover, and the second inclined surface is parallel to the first inclined surface.

[0009] As a further preferred embodiment, the pressure cover is a transparent cover, the top end of the pressure cover is provided with a first limiting portion bent inwardly, the bottom end of the blocking cover is provided with a second limiting portion bent inwardly, and when the pressure cover descends to the maximum position along the blocking cover, the first limiting portion is hooked on the second limiting portion.

[0010] As a further preferred embodiment, a limiting plate is fixed on the bottom end of the copper sleeve, and when the welding nozzle descends to the maximum position with the blocking piece, the blocking piece falls on the limiting plate.

[0011] As a further preference, a ring channel is provided at the bottom end of the welding gun head, and a circle of assembly holes is provided upward along the ring channel.

[0012] As a further preferred embodiment, a cavity is opened in the radial direction of the bottom end of the welding gun head, the outer end of the cavity passes through the outer wall of the welding gun head, the inner end of the cavity is communicated with the assembly hole, the cavity is filled with a second spring, the second spring is filled with a trigger rod, a moment switch is installed at the outer end of the cavity, the moment switch is connected to the dust suction fan, the outer end of the trigger rod is close to the moment switch, the inner end of the trigger rod enters the assembly hole, and a ceramic rod is installed at the top of the welding nozzle, and when the ceramic rod rises, it hits the inner end of the trigger rod, so that the trigger rod moves outward and triggers the moment switch to turn on the power.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Before welding, insert the two pins of the diode into the circuit board, insert the two pins into the lead holes, flip the diode over so that its main body lies on the circuit board, hold the welding gun so that the bottom of the pressure cover falls on the main body of the diode to press the diode tightly, one is to prevent the displacement of the diode, and the other is to prevent the two pins from coming out of the lead holes. At the same time, extend one end of the solder into the pin, look at the welding nozzle through the pressure cover, and turn on the welding gun to provide current to the heat-conducting sleeve through the circuit, heat the heat-conducting sleeve, and the heat-conducting sleeve transfers heat to the welding nozzle to generate high temperature. The welding nozzle is aimed at the circuit board and moves downward, and falls on the solder to melt the solder between the pin and the circuit board, completing the welding, and welding the other pin to the circuit board in the same way. Since the main body of the diode is pressed by the falling pressure cover during welding, the pin will not be detached from the lead hole on the circuit board, and the diode body will not be offset, which improves the welding quality.

[0015] 2. A dust suction fan is installed; after welding, the welding nozzle falls on the circuit board. Under the reverse push of the circuit board, the welding nozzle and the ceramic rod rise, and the top of the ceramic rod pushes the trigger rod outward, and the dust suction fan is triggered by the outer end of the trigger rod to start, and the air inlet is used to suck air towards the main pipe. The main pipe generates negative pressure and applies the negative pressure to each dust suction pipe. Each dust suction pipe is used to suck air outward. A large amount of smoke will be generated in the baffle cover and the pressure cover during welding. The smoke is discharged through these dust suction pipes. The air outlet of the dust suction fan is connected to the external industrial purification equipment to complete the purification and discharge. The pressure cover not only plays a pressing role, but also plays a role in covering the welding smoke and concentrating the welding smoke in the dust suction fan, thereby improving the effect of purifying the exhaust. Since the welding smoke has a certain amount of heat and hot air, when the welding smoke is discharged outward, it is equivalent to achieving the purpose of rapid cooling of the welding area on the circuit board.

[0016] 3. A lifting plate is provided on the dust suction pipe, and the outer surface of the shield is tapered; after welding is completed, the welding gun is repeatedly lifted and lowered. When the gun head descends with the welding nozzle, the bottom end of the welding nozzle falls on the circuit board and is subjected to a reaction force. In addition to rising, the shield still descends. When the shield descends, its outer conical surface will further penetrate into the pressure shield along the top end of the inner cavity of the pressure shield. Therefore, when the shield descends along the top wall of the inner cavity of the pressure shield, it will gradually shrink in the radial direction of the pressure shield. Once the shield shrinks, it will provide an extrusion force to the outer cylindrical surface of the lifting plate, so that the lifting plate rises along the inner wall surface of the shield, which is also a tapered surface; on the contrary, the welding gun is lifted, and when the shield rises along the pressure shield driven by the welding gun head, the shield gradually returns to its original state, and the lifting plate descends again, so that the lifting plate frequently lifts and lowers, so that all the dust suction pipes swing back and forth in the radial direction of the pressure shield, so that the thick smoke diffuses in the pressure shield area, and the smoke exhaust efficiency is further improved when the dust suction pipe is smoking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An external schematic diagram of a diode heat dissipation press-mounted structure provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of a front plan view of a diode heat dissipation press-mounted structure provided in an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of a main plan view of a diode heat dissipation press-fit structure after being cut open, provided in an embodiment of the present invention;

[0020] Figure 4 A diode heat dissipation press-fit structure provided in an embodiment of the present invention comprises Figure 3 The enlarged schematic diagram of the A part is shown in FIG.

[0021] Figure 5 A three-dimensional schematic diagram of a diode heat dissipation press-mounted structure after being cut open provided by an embodiment of the present invention;

[0022] Figure 6 A schematic diagram of only a press cover in a diode heat dissipation press-fit structure provided in an embodiment of the present invention;

[0023] Figure 7 A schematic diagram of a diode heat dissipation press-mounted structure provided in an embodiment of the present invention from a bottom-up perspective.

[0024] In the figure: 1. welding gun head; 2. assembly hole; 3. heat conductive sleeve; 4. copper sleeve; 5. buffer chamber; 6. welding nozzle; 7. baffle; 8. spring; 9. baffle cover; 10. pressure cover; 11. dust suction fan; 12. main pipe; 13. dust suction pipe; 14. first inclined surface; 15. first limiting part; 16. second limiting part; 17. lifting plate; 18. sliding hole; 19. sleeve hole; 20. limiting plate; 21. ring channel; 22. assembly hole; 23. cavity channel; 24. second spring; 25. trigger rod; 26. inching switch; 27. ceramic rod; 28. second inclined surface. DETAILED DESCRIPTION

[0025] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0026] In one embodiment, Figure 1-Figure 7 As shown:

[0027] The present embodiment provides a diode heat dissipation press-fit structure, including a welding gun head 1, a ring channel 21 is provided at the bottom end of the welding gun head 1, and a circle of assembly holes 22 are provided upward along the ring channel 21. The welding gun head 1 is the bottom section of the welding gun. In actual use, screws are inserted into the assembly holes 22 to assemble the welding gun head 1 on the welding gun. An assembly hole 2 is opened upward from the bottom end of the welding gun head 1, and a heat-conducting sleeve 3 is filled in the assembly hole 2. The heating circuit of the welding gun is connected to the heat-conducting sleeve 3. A copper sleeve 4 is fixed to the bottom end of the welding gun head 1. A buffer cavity 5 communicating with the assembly hole 2 is arranged in the copper sleeve 4. A welding tip 6 is arranged in the buffer cavity 5. The top end of the welding tip 6 passes through the assembly hole 2 and enters the heat-conducting sleeve 3. The bottom end of the welding tip 6 passes outside the bottom end of the copper sleeve 4. A baffle 7 slidably assembled in the buffer cavity 5 is fixed on the welding tip 6. The buffer cavity 5 is filled with a spring 8 sleeved on the periphery of the welding tip 6. The end of the spring 8 is pressed against the top end of the buffer cavity 5, and the bottom end of the spring 8 is pressed against the baffle 7.

[0028] The welding gun head 1 is provided with a press-fitting mechanism, which includes a shield 9 fixed on the bottom end of the welding gun head 1, and a pressure shield 10 sleeved on the shield 9, the shield 9 and the pressure shield 10 cover the periphery of the welding nozzle 6, and the bottom end length of the pressure shield 10 exceeds the bottom end of the welding nozzle 6; the welding gun head 1 is provided with a heat dissipation mechanism, which includes a dust suction fan 11 fixed on the outside of the shield 9, the heat dissipation mechanism also includes a main pipe 12 fixed on the inside of the shield 9, and the heat dissipation mechanism also includes a dust suction pipe 13 fixed on the main pipe 12, one end of the dust suction pipe 13 is connected upwardly to the On the main pipe 12, the other end of the dust suction pipe 13 is bent downward and close to the welding nozzle 6. The air inlet end of the main pipe 12 is connected to the air inlet of the dust suction fan 11 through a pipeline. The baffle cover 9 is provided with a taper that gradually tilts downward. The pressure cover 10 is a cylindrical cover. The inner diameter of the pressure cover 10 is consistent with the diameter of the small end of the taper of the baffle cover 9. When the pressure cover 10 rises along the tapered surface of the baffle cover 9, the baffle cover 9 radially contracts. A lifting plate 17 is provided in the baffle cover 9. The outer cylindrical surface of the lifting plate 17 slides in contact with the tapered inner wall surface of the baffle cover 9, and the dust suction pipe 13 runs through the lifting plate 17.

[0029] The main pipe 12 is annular, and there are a plurality of dust suction pipes 13. The plurality of dust suction pipes 13 are installed in a ring array on the main pipe 12. A circle of sliding holes 18 are opened in the ring array on the lifting plate 17. Each dust suction pipe 13 passes through a sliding hole 18. The bending direction and degree of each dust suction pipe 13 are consistent. The dust suction pipe 13 is a metal bellows, and a suction head is installed at the bottom end of each dust suction pipe 13.

[0030] A sleeve hole 19 is formed inside the lifting plate 17 , and the sleeve hole 19 is sleeved on the copper sleeve 4 .

[0031] A first inclined surface 14 is formed at the bottom end of the welding nozzle 6 , and a second inclined surface 28 is formed at the bottom end of the pressure cover 10 . The second inclined surface 28 is parallel to the first inclined surface 14 .

[0032] The pressure cover 10 is a transparent cover, and a first limiting portion 15 bent inward is provided at the top end of the pressure cover 10, and a second limiting portion 16 bent inward is provided at the bottom end of the blocking cover 9. When the pressure cover 10 descends to the maximum position along the blocking cover 9, the first limiting portion 15 is hooked on the second limiting portion 16 to prevent the pressure cover 10 from falling off the blocking cover 9.

[0033] A limit plate 20 is fixed to the bottom end of the copper sleeve 4. When the welding nozzle 6 is lowered to the maximum position with the baffle 7, the baffle 7 falls on the limit plate 20 to prevent the limit plate 20 from falling off. The limit plate 20 also prevents the welding nozzle 6 from falling downward from the copper sleeve 4.

[0034] A cavity 23 is provided in the radial direction of the bottom end of the welding gun head 1, the outer end of the cavity 23 passes through the outer wall of the welding gun head 1, the inner end of the cavity 23 is communicated with the assembly hole 2, the cavity 23 is filled with a second spring 24, the second spring 24 is filled with a trigger rod 25, a moment switch 26 is installed at the outer end of the cavity 23, the moment switch 26 is connected to the dust suction fan 11, the outer end of the trigger rod 25 is close to the moment switch 26, the inner end of the trigger rod 25 enters the assembly hole 2, and a ceramic rod 27 is installed at the top end of the welding nozzle 6. When the ceramic rod 27 rises, it hits the inner end of the trigger rod 25, so that the trigger rod 25 moves outward and triggers the moment switch 26 to turn on the power.

[0035] Before welding, insert the two pins of the diode into the circuit board (the circuit board has lead holes, and the two pins are inserted into the lead holes), turn the diode over so that its main body lies on the circuit board, hold the welding gun so that the bottom end of the pressure cover 10 falls on the main body of the diode to press the diode tightly, firstly to prevent the displacement of the diode, and secondly to prevent the two pins from coming out of the lead holes, and at the same time extend one end of the solder into the pin, observe the welding nozzle 6 through the pressure cover 10, and turn on the welding gun to provide current to the heat-conducting sleeve 3 through the circuit, heat the heat-conducting sleeve 3, and the heat-conducting sleeve 3 transfers heat to the welding nozzle 6 to generate high temperature, and the welding nozzle 6 moves downward toward the circuit board, and falls on the solder to melt the solder between the pin and the circuit board, completing the welding, and welding another pin to the circuit board in the same way. Since the main body of the diode is pressed by the falling pressure cover 10 during welding, the pin will not be separated from the lead hole on the circuit board, and the diode body will not be offset, thereby improving the welding quality.

[0036] After the welding nozzle 6 performs the above welding, the power is turned off, the welding gun stops supplying heat, the welding nozzle 6 stops heating, and the welding gun continues to descend with the welding nozzle 6, so that the bottom end of the welding nozzle 6 falls on the circuit board. The circuit board provides a reaction force to the bottom end of the welding nozzle 6, causing the top end of the welding nozzle 6 to rise along the assembly hole 2, and the top end of the welding nozzle 6 pushes the ceramic rod 27 to rise. The top end of the ceramic rod 27 pushes the inner end of the trigger rod 25, so that the trigger rod 25 moves outward along the cavity 23, and the outer end of the trigger rod 25 hits the inching switch 26, so that the inching switch 26 is energized and triggers the dust suction fan 11 to start, and uses the air inlet to suck air toward the main pipe 12, and the main pipe 12 generates a negative The pressure is applied to each vacuum tube 13, and each vacuum tube 13 is used to inhale air outwards. A large amount of smoke will be generated in the baffle cover 9 and the pressure cover 10 during welding. The smoke is discharged through these vacuum tubes 13. The air outlet of the vacuum fan 11 is connected to the external industrial purification equipment to complete the purification and discharge. In summary, the pressure cover 10 not only plays a pressing role, but also plays a role in covering the welding smoke and concentrating the welding smoke in the vacuum fan 11, thereby improving the effect of purifying the exhaust gas. Since the welding smoke has a certain amount of heat (hot air), when the welding smoke is discharged outwards, it is equivalent to achieving the purpose of rapid cooling of the welding area on the circuit board.

[0037] The welding gun head 1 is repeatedly operated to repeat the lifting action, and when the welding gun head 1 brings the welding nozzle 6 down, the bottom end of the welding nozzle 6 falls on the circuit board and is subjected to the reaction force. In addition to rising, the shield 9 still falls. When the shield 9 falls, its outer conical surface will further penetrate into the pressure shield 10 along the top of the inner cavity of the pressure shield 10. Since the outer surface of the shield 9 has a taper, when the shield 9 falls along the top wall of the inner cavity of the pressure shield 10, it will gradually shrink in the radial direction of the pressure shield 10. Once the shield 9 shrinks, it will move toward the lifting plate 17. The outer cylindrical surface provides an extrusion force, so that the lifting plate 17 rises along the inner wall surface of the baffle cover 9 (the inner wall surface of the baffle cover 9 is also a tapered surface); conversely, the welding gun is lifted, and when the baffle cover 9 rises along the pressure cover 10 driven by the welding gun head 1, the baffle cover 9 gradually returns to its original state, and the lifting plate 17 drops again. Through the above-mentioned operation method, the lifting plate 17 is frequently lifted and lowered, so that all the dust suction pipes 13 swing back and forth in the radial direction inside the pressure cover 10, so that the thick smoke diffuses in the pressure cover 10, and the smoke exhaust efficiency is further improved when the dust suction pipe 13 smokes.

[0038] The shield 9 is made of plastic or hard rubber, so it will shrink radially when squeezed by the taper. The bottom end of the dust suction pipe 13 is provided with a suction head, the outline of which is larger than the diameter of the dust suction pipe 13 and also larger than the diameter of the sliding hole 18, which not only improves the smoking effect but also prevents the lifting plate 17 from falling downward from the bottom end of the dust suction pipe 13.

[0039] The inner end of the trigger rod 25 is a spherical surface, so when the top end of the ceramic rod 27 pushes the inner end of the trigger rod 25, the trigger rod 25 moves outward along the cavity 23. Figure 4 As shown, the inner end of the trigger rod 25 has a limiting portion, and the two ends of the second spring 24 are supported between the limiting portion and the left end of the cavity 23. When the inner end of the trigger rod 25 is moved to the left due to the collision of the rising ceramic rod 27, the second spring 24 is compressed and shortened and stores elastic force. When the ceramic rod 27 descends and separates from the inner end of the trigger rod 25, the second spring 24 releases the elastic force and uses the limiting portion to push the inner end of the trigger rod 25 to enter the assembly hole 2 again, and the outer end of the trigger rod 25 leaves the moment switch 26, the moment switch 26 is powered off, and the dust suction fan 11 stops working. The dust suction fan 11 achieves the purpose of momentary operation and is more energy-efficient.

[0040] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0041] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A diode heat dissipation press-fit structure, characterized in that: The invention comprises a welding gun head (1), wherein an assembly hole (2) is opened upward from the bottom end of the welding gun head (1), the assembly hole (2) is filled with a heat-conducting sleeve (3), a copper sleeve (4) is fixed at the bottom end of the welding gun head (1), a buffer cavity (5) is arranged in the copper sleeve (4) and is communicated with the assembly hole (2) from top to bottom, a welding nozzle (6) is arranged in the buffer cavity (5), the top end of the welding nozzle (6) passes through the assembly hole (2) and enters the heat-conducting sleeve (3), the bottom end of the welding nozzle (6) passes outside the bottom end of the copper sleeve (4), a baffle (7) is fixed on the welding nozzle (6) and is slidably assembled in the buffer cavity (5), the buffer cavity (5) is filled with a spring (8) sleeved on the periphery of the welding nozzle (6), the end of the spring (8) is on the top of the buffer cavity (5), and the bottom end of the spring (8) is on the baffle (7); The welding gun head (1) is provided with a press-fitting mechanism, the press-fitting mechanism comprising a shield (9) fixed on the bottom end of the welding gun head (1), and a pressure shield (10) sleeved on the shield (9), the shield (9) and the pressure shield (10) covering the periphery of the welding nozzle (6), and the bottom end length of the pressure shield (10) exceeds the bottom end of the welding nozzle (6); the welding gun head (1) is provided with a heat dissipation mechanism, the heat dissipation mechanism comprising a dust suction fan (11) fixed on the outside of the shield (9), the heat dissipation mechanism further comprising a main pipe (12) fixed on the inside of the shield (9), the heat dissipation mechanism further comprising a dust suction pipe (13) fixed on the main pipe (12), one end of the dust suction pipe (13) being connected upward to a On the main pipe (12), the other end of the dust suction pipe (13) is bent downward and close to the welding nozzle (6), and the air inlet end of the main pipe (12) is connected to the air inlet of the dust suction fan (11) through a pipeline. The baffle cover (9) is provided with a taper that gradually tilts downward. The pressure cover (10) is a cylindrical cover. The inner diameter of the pressure cover (10) is consistent with the diameter of the small end of the taper of the baffle cover (9). When the pressure cover (10) rises along the tapered surface of the baffle cover (9), the baffle cover (9) is radially contracted. A lifting plate (17) is provided inside the baffle cover (9), and the outer cylindrical surface of the lifting plate (17) is in sliding contact with the tapered inner wall surface of the baffle cover (9). The dust suction pipe (13) passes through the lifting plate (17).

2. A diode heat dissipation press-fit structure according to claim 1, characterized in that: The main pipe (12) is annular, and there are a plurality of dust suction pipes (13). The plurality of dust suction pipes (13) are installed in an annular array on the main pipe (12). A circle of sliding holes (18) is provided in the annular array on the lifting plate (17). Each of the dust suction pipes (13) passes through one of the sliding holes (18). The bending direction and degree of each of the dust suction pipes (13) are consistent. The dust suction pipes (13) are metal bellows, and a suction head is installed at the bottom end of each of the dust suction pipes (13).

3. A diode heat dissipation press-fit structure according to claim 2, characterized in that: A sleeve hole (19) is provided inside the lifting plate (17), and the sleeve hole (19) is sleeved on the copper sleeve (4).

4. A diode heat dissipation press-fit structure according to claim 3, characterized in that: The bottom end of the welding nozzle (6) is provided with a first inclined surface (14), and the bottom end of the pressure cover (10) is provided with a second inclined surface (28), wherein the second inclined surface (28) is parallel to the first inclined surface (14).

5. A diode heat dissipation press-fit structure according to claim 4, characterized in that: The pressure cover (10) is a transparent cover, the top end of the pressure cover (10) is provided with a first limiting portion (15) bent inwardly, and the bottom end of the blocking cover (9) is provided with a second limiting portion (16) bent inwardly. When the pressure cover (10) is lowered to the maximum position along the blocking cover (9), the first limiting portion (15) is hooked on the second limiting portion (16).

6. A diode heat dissipation press-fit structure according to claim 5, characterized in that: A limiting plate (20) is fixed to the bottom end of the copper sleeve (4); when the welding nozzle (6) and the blocking piece (7) are lowered to the maximum position, the blocking piece (7) falls on the limiting plate (20).

7. A diode heat dissipation press-fit structure according to claim 6, characterized in that: A ring channel (21) is provided at the bottom end of the welding gun head (1), and a circle of assembly holes (22) is provided upwardly along the ring channel (21).

8. The diode heat dissipation press-fit structure according to claim 7, characterized in that: A cavity (23) is provided at the bottom end of the welding gun head (1) in the radial direction, the outer end of the cavity (23) passes through the outer wall of the welding gun head (1), the inner end of the cavity (23) is communicated with the assembly hole (2), the cavity (23) is filled with a second spring (24), the second spring (24) is filled with a trigger rod (25), a moment switch (26) is installed at the outer end of the cavity (23), the moment switch (26) is connected to the dust suction fan (11), the outer end of the trigger rod (25) is close to the moment switch (26), the inner end of the trigger rod (25) enters the assembly hole (2), and a ceramic rod (27) is installed at the top end of the welding nozzle (6), and when the ceramic rod (27) rises, it hits the inner end of the trigger rod (25), so that the trigger rod (25) moves outward and triggers the moment switch (26) to be energized.

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