A welding tooling

Abstract

The present application relates to a welding tooling, belonging to the technical field of heat sink processing, and includes a welding base. A first placement groove and a second placement groove are formed in the welding base. The first placement groove is used to accommodate a main heat sink, and the second placement groove is used to accommodate lateral heat sinks. The number of the second placement grooves is the same as the number of the lateral heat sinks, and they are located on both sides of the first placement groove. The second placement groove communicates with the first placement groove. After the lateral heat sink is placed in the second placement groove, one end of the lateral heat sink overlaps on the main heat sink, and the other end is placed on the bottom wall of the second placement groove. A pushing member is arranged on the welding base, and the pushing member is used to push the lateral heat sink to tightly abut against the main heat sink, so that the lateral heat sink on the other side tightly abuts against the side wall of the second placement groove. The present application has the effect of improving the welding quality of the radiator.

Description

Technical Field

[0001] The present application relates to the technical field of heat sink processing, and in particular to a welding tooling. Background Art

[0002] Heat sinks are mainly used to dissipate heat from heat-generating electronic components, and are mostly made of materials such as aluminum alloy, brass or bronze; their shapes are mostly plate-shaped and sheet-shaped. During the processing of ordinary heat sinks, they usually go through turning, grinding and fluting in sequence and finally take shape.

[0003] As Figure 1 and Figure 2 shown, some slightly more complex heat sinks also need to be made into a combined heat dissipation structure by means such as welding. For example, the lateral heat sink 1 is welded to the main body heat sink 2.

[0004] However, during the welding process, the components of the radiator are prone to relative displacement, resulting in the failure of the welded product. Summary of the Invention

[0005] In order to improve the welding quality of the radiator, the present application provides a welding tooling.

[0006] The welding tooling provided by the present application adopts the following technical solutions:

[0007] A welding tooling includes a welding base, on which a first placement groove and a second placement groove are provided. The first placement groove is used to accommodate the main body heat sink, and the second placement groove is used to accommodate the lateral heat sink. The number of the second placement grooves is the same as the number of the lateral heat sinks and is located on both sides of the first placement groove. The second placement groove communicates with the first placement groove. After the lateral heat sink is placed in the second placement groove, one end of the lateral heat sink overlaps on the main body heat sink, and the other end is placed on the bottom wall of the second placement groove. A pushing member is provided on the welding base, and the pushing member is used to push the lateral heat sink to abut against the main body heat sink, so that the lateral heat sink on the other side abuts against the side wall of the second placement groove.

[0008] Optionally, a third placement groove is provided on the welding base. The pushing member includes a pushing block, a driving block, a pressing block and a fixing block that are slidably arranged in the third placement groove. The fixing block, the pressing block, the driving block and the pushing block are linearly arranged and are successively away from the lateral heat sink. The pressing block is located between the fixing block and the driving block and is slidably clamped on the fixing block and the driving block. The contact surface between the pressing block and the driving block is an inclined surface and the inclined surface of the pressing block faces the bottom wall and the side wall of the third placement groove. When the pressing block slides towards the bottom wall of the third placement groove, it drives the driving block and drives the pushing block to abut against the lateral heat sink to push the lateral heat sink to move; the pushing member further includes a driving bolt, and the driving bolt passes through the pressing block and is threadedly connected to the bottom wall of the third placement groove. When the driving bolt rotates, it drives the pressing block to move downward.

[0009] Optionally, a guiding plate is provided on the welding base. The guiding plate is arranged on both sides of the lateral heat sink. A clamping block is slidably arranged on the guiding plate. The clamping block is used for clamping and fixing both sides of the lateral heat sink. A first driving member is arranged on the guiding plate. The first driving member is used for driving the clamping block to slide so as to drive the installation corner of the lateral heat sink to be clamped at the installation corner of the main heat sink.

[0010] Optionally, the first driving member includes a first lead screw rotatably arranged on the guiding plate. The clamping block is threadedly connected to the first lead screw. The included angle between the first lead screw and the welding base is 45 degrees. When the main heat sink is not coated with solder, the lateral heat sink is clamped at the corner of the main heat sink, then the clamping block is moved to the side of the lateral heat sink and the lateral heat sink is clamped. Then, the lateral heat sink is driven by the clamping block to be separated from the main heat sink, and then solder is applied to the installation corner of the main heat sink.

[0011] Optionally, the clamping block includes a slider threadedly connected to the first lead screw and a pressing block arranged on the slider. The pressing block is slidably arranged on the surface of the slider facing away from the guiding plate. The pressing block slides along the surface perpendicular to the guiding plate. A second driving member is arranged on the slider for driving the pressing block to slide and pressing against the side wall of the lateral heat sink.

[0012] Optionally, the guiding plate is hinged to the welding base. The hinge axis of the guiding plate is parallel to the welding base and parallel to the sliding direction of the pushing block. A third driving member is arranged on the welding base for driving the guiding plate to rotate to be perpendicular to the welding base.

[0013] Optionally, a vertical lead screw and a horizontal lead screw are arranged on the guiding plate. The horizontal lead screw and the vertical lead screw are perpendicular to each other. The horizontal lead screw is rotatably arranged on the guiding plate. A mounting seat is threadedly connected to the horizontal lead screw. The vertical lead screw is rotatably arranged on the mounting seat. A sliding seat is threadedly connected to the vertical lead screw. The first lead screw is rotatably arranged on the sliding seat. The included angles between the first lead screw and the vertical lead screw and the horizontal lead screw are both 45 degrees.

[0014] Optionally, a pressing plate is arranged on the pressing surface of the pressing block. The pressing plate is a telescopic structure. The pressing plate is a rectangular plate. The pressing plate includes a plurality of socket plates and sliding plates. The sliding plates are slidably sleeved in the socket plates. After the socket plates are used for the pressing block to fix the lateral heat sink, they are pressed against the top surface of the lateral heat sink to limit the lateral heat sink.

[0015] Optionally, a fixing groove is formed on the pressing surface of the pressing block. The end of the pressing plate is inserted into the fixing groove.

[0016] Optionally, an adjusting plate is slidably arranged in the first placement groove. The adjusting plate slides along the depth direction of the first placement groove and is used to hold the main body heat sink. An adjusting member is arranged in the welding base, and the adjusting member is used to adjust the height of the receiving plate to adapt to main body heat sinks of different specifications.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] During heat sink welding, place the main body heat sink in the first placement groove, apply solder at the welding position of the main body heat sink, then place the lateral heat sink in the second placement groove. One side of the lateral heat sink is pressed against the soldered position of the main body heat sink, and the other end is received on the bottom wall of the second placement groove. At this time, the lateral heat sink is in a horizontal state. Subsequently, use screws to preliminarily position and fix the lateral heat sink and the main body heat sink. Then, push the lateral heat sink through the pushing member so that the lateral heat sink presses tightly against the main body heat sink, and the main body heat sink abuts against the other lateral heat sink to fix both the main body heat sink and the lateral heat sink on the welding base. Subsequently, rotate the screws to fix the lateral heat sink on the main body heat sink. Then, move the welding base and the heat sink together into a soldering machine for heating to melt the solder and complete the welding of the lateral heat sink and the main body heat sink. Under the combined action of the pushing member and the screws, the lateral heat sink and the main body heat sink are fixed on the welding base, reducing the possibility of relative displacement between the lateral heat sink and the main body heat sink during the welding process, thereby improving the welding quality. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the heat sink;

[0020] Figure 2 is a cross-sectional view of the lateral heat sink and the main body heat sink;

[0021] Figure 3 is a schematic overall structural diagram of a welding tooling according to an embodiment of the present application;

[0022] Figure 4 is an exploded view of the heat sink and the welding base of a welding tooling according to an embodiment of the present application;

[0023] Figure 5 is a cross-sectional view of the welding base in a welding tooling according to an embodiment of the present application;

[0024] Figure 6 is a schematic structural diagram of the guide plate in a welding tooling according to an embodiment of the present application;

[0025] Figure 7 is Figure 6 an enlarged schematic view of part A in

[0026] Description of the reference numerals: 1. Lateral heat sink; 2. Main body heat sink; 3. Welding base; 4. First placement groove; 5. Second placement groove;

[0027] 6. Pushing member; 61. Pushing block; 62. Driving block; 63. Pressing block; 64. Fixing block; 65. Driving bolt;

[0028] 7. Third placement groove; 8. Guide plate;

[0029] 9. Clamping block; 91. Slider; 92. Crimping block; 93. Micro push rod;

[0030] 10. First driving member; 101. First lead screw;

[0031] 11. Groove; 12. First motor; 13. Cooling groove; 14. Vertical lead screw; 15. Horizontal lead screw; 16. Mounting seat; 17. Slide seat; 18. Crimping plate; 19. Fixing groove; 20. Adjusting plate; 21. First push rod. Detailed implementation manners

[0032] The following further describes the present application in detail with reference to the Figure 3 - drawings Figure 7 to further illustrate the present application.

[0033] An embodiment of the present application discloses a welding tooling. Referring to Figure 3 and Figure 4 , the welding tooling includes a welding base 3. A first placement groove 4 and a second placement groove 5 are formed on the welding base 3. The first placement groove 4 is used to accommodate the main body heat sink 2, and the second placement groove 5 is used to accommodate the lateral heat sink 1. The number of the second placement grooves 5 is the same as that of the lateral heat sinks 1 and is located on both sides of the first placement groove 4. The second placement groove 5 communicates with the first placement groove 4. After the lateral heat sink 1 is placed in the second placement groove 5, one end of the lateral heat sink 1 overlaps on the main body heat sink 2, and the other end is placed on the bottom wall of the second placement groove 5. A pushing member 6 is arranged on the welding base 3. The pushing member 6 is used to push the lateral heat sink 1 to abut against the main body heat sink 2, so that the lateral heat sink 1 on the other side abuts against the side wall of the second placement groove 5.

[0034] When welding the heat sink, place the main heat sink 2 in the first placement groove 4, apply solder at the welding joint of the main heat sink 2, then place the lateral heat sink 1 in the second placement groove 5. One side of the lateral heat sink 1 is pressed against the soldered part of the main heat sink 2, and the other end is received on the bottom wall of the second placement groove 5. At this time, the lateral heat sink 1 is in a horizontal state. Subsequently, use screws to preliminarily position and fix the lateral heat sink 1 and the main heat sink 2. Then, push the lateral heat sink 1 through the pusher 6 so that the lateral heat sink 1 presses tightly against the main heat sink 2, and the main heat sink 2 abuts against the lateral heat sink 1 on the other side to fix both the main heat sink 2 and the lateral heat sink 1 on the welding base 3. Subsequently, turn the screws to fix the lateral heat sink 1 on the main heat sink 2. Then, move the welding base 3 and the heat sink together into the soldering machine for heating to melt the solder, thereby completing the welding of the lateral heat sink 1 and the main heat sink 2. Under the combined action of the pusher 6 and the screws, the lateral heat sink 1 and the main heat sink 2 are fixed on the welding base 3, reducing the possibility of relative displacement between the lateral heat sink 1 and the main heat sink 2 during the welding process, thus improving the welding quality.

[0035] Referring to Figure 4 and Figure 5 , in the embodiment of the present application, a third placement groove 7 is formed on the welding base 3. The third placement groove 7 communicates with the second placement groove 5 on one side. The pusher 6 includes a push block 61, a drive block 62, a pressing block 63, and a fixing block 64 that are slidably arranged in the third placement groove 7. The fixing block 64, the pressing block 63, the drive block 62, and the push block 61 are linearly arranged and are successively away from the lateral heat sink 1. The pressing block 63 is located between the fixing block 64 and the drive block 62 and is slidably clamped on the fixing block 64 and the drive block 62. The contact surface between the pressing block 63 and the drive block 62 is an inclined surface, and the inclined surface of the pressing block 63 faces the bottom wall and the side wall of the third placement groove 7. When the pressing block 63 slides towards the bottom wall of the third placement groove 7, it pushes the drive block 62 to drive the push block 61 to abut against the lateral heat sink 1 and push the lateral heat sink 1 to move; the pusher 6 further includes a drive bolt 65. The drive bolt 65 passes through the pressing block 63 and is threadedly connected to the bottom wall of the third placement groove 7. When the drive bolt 65 rotates, it drives the pressing block 63 to move downward.

[0036] After the main heat sink 2 and the lateral heat sink 1 are respectively placed in the first placement groove 4 and the second placement groove 5, rotate the drive bolt 65. The end of the drive bolt 65 presses against the end of the pressing block 63 and drives the pressing block 63 to gradually move downward. When the pressing block 63 moves downward, it pushes the drive block 62 and the push block 61 to slide, and the push block 61 slides to abut against the lateral heat sink 1, which is simple and convenient to operate.

[0037] Referring to Figure 6 and Figure 7, in the embodiment of the present application, after the solder paste is applied to the installation position of the main radiator, the solder paste is relatively uniform, flat and full at this time. When the lateral heat sink 1 is pressed against the solder paste and the lateral heat sink 1 is pushed to move, the lateral heat sink 1 pushes the solder paste to move, which easily causes problems such as solder paste breakage and uneven distribution. Therefore, in the embodiment of the present application, a guide plate 8 is provided on the welding base 3. The guide plate 8 is arranged on both sides of the lateral heat sink 1. A clamping block 9 is slidably arranged on the guide plate 8. The clamping block 9 is used to clamp and fix both sides of the lateral heat sink 1. A first driving member 10 is arranged on the guide plate 8. The first driving member 10 is used to drive the clamping block 9 to slide and drive the installation corner of the lateral heat sink 1 to be clamped at the installation corner of the main heat sink 2; after the solder paste is applied, the lateral heat sink 1 is clamped and fixed by the clamping block 9, and then the lateral heat sink 1 is obliquely fed into the installation position of the main heat sink 2 by the first driving member 10. The installation angle of the main heat sink 2 is 90 degrees. The lateral heat sink 1 is obliquely clamped at the installation position of the main heat sink 2. At this time, the solder paste is extruded rather than pushed by the lateral heat sink 1, so that the continuity of the solder paste is not affected, thereby further improving the welding quality of the heat sink.

[0038] Refer to Figure 6 and Figure 7 , in the embodiment of the present application, the first driving member 10 includes a first lead screw 101 rotatably arranged on the guide plate 8. The clamping block 9 is threadedly connected to the first lead screw 101. The included angle between the first lead screw 101 and the welding base 3 is 45 degrees. When the main heat sink 2 is not coated with solder, the lateral heat sink 1 is clamped at the corner of the main heat sink 2, and then the clamping block 9 is moved to the side of the lateral heat sink 1 and the lateral heat sink 1 is clamped. Then, the lateral heat sink 1 is driven by the clamping block 9 to be separated from the main heat sink 2, and then solder is applied to the installation corner of the main heat sink 2; before the solder paste is applied, first, the lateral heat sink 1 is installed at the installation position on the main heat sink 2. At this time, the lateral heat sink 1 is closely attached to the main heat sink 2. Then, the first lead screw 101 is rotated. The rotation of the first lead screw 101 drives the clamping block 9 to move to the side of the lateral heat sink 1. The clamping block 9 clamps the lateral heat sink 1. After the lateral heat sink 1 is clamped, the clamping block 9 and the lateral heat sink 1 are driven by the first lead screw 101 to move and be separated from the main heat sink 2. Then, solder paste is applied to the main heat sink 2. Then, the first lead screw 101 is rotated to drive the lateral heat sink 1 to be clamped at the corner of the main heat sink 2.

[0039] Refer to Figure 6 and Figure 7, to facilitate the clamping block 9 to be clamped on the side wall of the lateral heat sink 1, the clamping block 9 includes a slider 91 threadedly connected to the first lead screw 101 and a crimping block 92 provided on the slider 91. The crimping block 92 is slidably arranged on the surface of the slider 91 facing away from the guide plate 8, and the crimping block 92 slides along a plane perpendicular to the guide plate 8. A second driving member for driving the crimping block 92 to slide and press against the side wall of the lateral heat sink 1 is provided on the slider 91. The second driving member includes a micro push rod 93 arranged inside the slider 91. A groove 11 is formed on the slider 91. Both the crimping block 92 and the micro push rod 93 are located in the groove 11, and the crimping block 92 is fixedly arranged on the output shaft of the micro push rod 93. After the slider 91 moves to the side of the lateral heat sink 1, the micro push rod 93 is started, and the micro push rod 93 pushes the crimping block 92 to press against the side of the lateral heat sink 1, so as to fix the lateral heat sink 1 between the two crimping blocks 92, and the operation is simple and convenient.

[0040] Refer to Figure 6 and Figure 7 , in the embodiment of the present application, the guide plate 8 is hinged to the welding base 3. The hinge axis of the guide plate 8 is parallel to the welding base 3 and parallel to the sliding direction of the pushing block 61. A third driving member for driving the guide plate 8 to rotate to be perpendicular to the welding base 3 is provided on the welding base 3. The third driving member includes a first motor 12 arranged on the welding base 3. The hinge shaft of the guide plate 8 is coaxially arranged on the output shaft of the first motor 12. After the lateral heat sink 1 is fixed on the pushing block 61 and the main body heat sink 2, the first motor 12 is started, and the first motor 12 drives the guide plate 8 to fit on the welding base 3, which is convenient for the hot melting of the solder paste. Further, a cooling groove 13 is formed on the welding base 3. After the guide plate 8 fits on the welding base 3, the guide plate 8 is located in the cooling groove 13, and coolant or cooling water can be injected into the cooling groove 13.

[0041] Refer to Figure 6 and Figure 7 , to facilitate the clamping block 9 to adapt to the clamping position of the lateral heat sink 1, and to facilitate the clamping block 9 to drive the lateral heat sink 1 to fit on the main body heat sink 2 in a 45-degree direction, a vertical lead screw 14 and a horizontal lead screw 15 are provided on the guide plate 8. The horizontal lead screw 15 and the vertical lead screw 14 are perpendicular to each other. The horizontal lead screw 15 is rotatably arranged on the guide plate 8. A mounting seat 16 is threadedly connected to the horizontal lead screw 15. The vertical lead screw 14 is rotatably arranged on the mounting seat 16. A sliding seat 17 is threadedly connected to the vertical lead screw 14. The first lead screw 101 is rotatably arranged on the sliding seat 17. The angles between the first lead screw 101 and the vertical lead screw 14 and the horizontal lead screw 15 are both 45 degrees. The position of the first lead screw 101 is adjusted through the horizontal lead screw 15 and the vertical lead screw 14, and then the position of the clamping block 9 is adjusted through the first lead screw 101, so that the clamping block 9 adapts to the position of the lateral heat sink 1, which is convenient for the subsequent feeding operation of the lateral heat sink 1.

[0042] Reference Figure 5 and Figure 6 When the pushing block 61 acts on the lateral heat sink 1, since the texture of the heat sink is relatively soft and the hardness is average, it is easy to cause the lateral heat sink 1 to bulge and bend due to the extrusion force. Therefore, in the embodiment of the present application, a pressing plate 18 is arranged on the pressing surface of the pressing block 92. The pressing plate 18 is a telescopic structure. The pressing plate 18 is used to connect the pressing blocks 92 on both sides. The pressing plate 18 is a rectangular plate. The pressing plate 18 includes a plurality of socket plates and sliding plates. The sliding plate is slidably sleeved in the socket plate. The socket plate is used to press against the top surface of the lateral heat sink 1 after the pressing block 92 fixes the lateral heat sink 1 to limit the lateral heat sink 1; after the clamping block 9 clamps the lateral heat sink 1, the pressing plate 18 is moved into the space between the two pressing blocks 92, and the pressing plate 18 is installed on the pressing block 92. At this time, the pressing plate 18 straddles the lateral heat sink 1 and presses on the lateral heat sink 1, thereby reducing the possibility of deformation of the lateral heat sink 1 caused by the extrusion force.

[0043] Reference Figure 5 and Figure 6 Furthermore, to facilitate the installation of the pressing plate 18 on the pressing block 92, a fixing groove 19 is formed on the pressing surface of the pressing block 92, and the end of the pressing plate 18 is inserted into the fixing groove 19.

[0044] Reference Figure 5 To adapt the welding base 3 to heat sinks with different specifications, an adjusting plate 20 is slidably arranged in the first placement groove 4. The adjusting plate 20 slides along the depth direction of the first placement groove 4. The adjusting plate 20 is used to receive the main heat sink 2. An adjusting member is arranged in the welding base 3. The adjusting member is used to adjust the height of the receiving plate to adapt to main heat sinks 2 with different specifications. The adjusting member includes a first push rod 21 arranged in the first placement groove 4. The length direction of the output shaft of the first push rod 21 is perpendicular to the bottom wall of the first placement groove 4. The receiving plate is fixedly arranged on the output shaft of the first push rod 21; by adjusting the height of the receiving plate through the first push rod 21, it is convenient to place main heat sinks 2 with different thickness specifications in the first placement groove 4, and the installation angle of the main heat sink 2 is moved out from the top surface of the welding base 3. After the installation angle of the main heat sink 2 is moved out, the position of the clamping block 9 is adjusted through the transverse lead screw 15, the vertical lead screw 14, and the first lead screw 101, so as to facilitate the welding tooling to adapt to different lateral heat sinks 1 and main heat sinks 2.

[0045] The implementation principle of a welding tooling in the embodiment of the present application is as follows:

[0046] When welding the heat sink, place the main heat sink 2 in the first placement groove 4, apply solder at the welding joint of the main heat sink 2, then place the lateral heat sink 1 in the second placement groove 5. One side of the lateral heat sink 1 is pressed against the soldered part of the main heat sink 2, and the other end is received on the bottom wall of the second placement groove 5. At this time, the lateral heat sink 1 is in a horizontal state. Subsequently, use screws to preliminarily position and fix the lateral heat sink 1 and the main heat sink 2. Then, push the lateral heat sink 1 through the pusher 6 so that the lateral heat sink 1 presses tightly against the main heat sink 2, and the main heat sink 2 abuts against the other lateral heat sink 1 to fix both the main heat sink 2 and the lateral heat sink 1 on the welding base 3. Subsequently, turn the screws to fix the lateral heat sink 1 on the main heat sink 2. Then, move the welding base 3 and the heat sink into the soldering machine together for heating, so that the solder melts to complete the welding of the lateral heat sink 1 and the main heat sink 2. Under the combined action of the pusher 6 and the screws, the lateral heat sink 1 and the main heat sink 2 are fixed on the welding base 3, reducing the possibility of relative displacement between the lateral heat sink 1 and the main heat sink 2 during the welding process, thereby improving the welding quality.

[0047] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A welding tool, characterized in that: The invention comprises a welding base (3), wherein a first placement groove (4) and a second placement groove (5) are provided on the welding base (3), wherein the first placement groove (4) is used to accommodate the main heat sink (2), and the second placement groove (5) is used to accommodate the lateral heat sink (1), wherein the number of the second placement grooves (5) is the same as the number of the lateral heat sink (1), and the second placement grooves (5) are located on both sides of the first placement groove (4), and the second placement grooves (5) are connected to the first placement groove (4), and after the lateral heat sink (1) is placed in the second placement groove (5), one end of the lateral heat sink (1) overlaps the main heat sink (2), and the other end is placed on the bottom wall of the second placement groove (5), and a pushing member (6) is provided on the welding base (3), and the pushing member (6) is used to push the lateral heat sink (1) against the main heat sink (2), so that the lateral heat sink (1) on the other side is pressed against the side wall of the second placement groove (5); The welding base (3) is provided with a third placement groove (7), and the pushing member (6) comprises a pushing block (61), a driving block (62), a pressing block (63) and a fixed block (64) which are slidably arranged in the third placement groove (7); the fixed block (64), the pressing block (63), the driving block (62) and the pushing block (61) are linearly arranged and sequentially away from the lateral heat sink (1); the pressing block (63) is located between the fixing block (64) and the driving block (62) and is slidably engaged with the fixing block (64) and the driving block (62); the pressing block (63) and the driving block (62) are arranged in a linear manner and are sequentially away from the lateral heat sink (1); The contact surface of the moving block (62) is an inclined surface, and the inclined surface of the pressing block (63) faces the bottom wall and the side wall of the third placement groove (7). When the pressing block (63) slides toward the bottom wall of the third placement groove (7), it pushes the driving block (62) and drives the pushing block (61) to abut against the lateral heat sink (1) and push the lateral heat sink (1) to move; the pushing member (6) also includes a driving bolt (65), which passes through the pressing block (63) and is threadedly connected to the bottom wall of the third placement groove (7). The driving bolt (65) rotates to drive the pressing block (63) to move downward; A guide plate (8) is provided on the welding base (3), and the guide plate (8) is arranged on both sides of the lateral heat sink (1). A clamping block (9) is slidably provided on the guide plate (8), and the clamping block (9) is used to clamp and fix the two sides of the lateral heat sink (1). A first driving member (10) is provided on the guide plate (8), and the first driving member (10) is used to drive the clamping block (9) to slide and drive the installation corner of the lateral heat sink (1) to be clamped on the installation corner of the main heat sink (2); The first driving member (10) comprises a first screw (101) rotatably arranged on the guide plate (8), the clamping block (9) is threadedly connected to the first screw (101), the angle between the first screw (101) and the welding base (3) is 45 degrees, when the main heat sink (2) is not coated with solder, the lateral heat sink (1) is clamped at the corner of the main heat sink (2), and then the clamping block (9) is moved to the side of the lateral heat sink (1) and clamps the lateral heat sink (1), and then the clamping block (9) drives the lateral heat sink (1) to separate from the main heat sink (2), and then solder is coated to the installation corner of the main heat sink (2); A vertical lead screw (14) and a transverse lead screw (15) are arranged on the guide plate (8); the transverse lead screw (15) and the vertical lead screw (14) are perpendicular to each other; the transverse lead screw (15) is rotatably arranged on the guide plate (8); a mounting seat (16) is threadedly connected to the transverse lead screw (15); the vertical lead screw (14) is rotatably arranged on the mounting seat (16); a slide seat (17) is threadedly connected to the vertical lead screw (14); the first lead screw (101) is rotatably arranged on the slide seat (17); and the angles between the first lead screw (101) and the vertical lead screw (14) and the transverse lead screw (15) are all 45 degrees.

2. A welding tool according to claim 1, characterized in that: The clamping block (9) comprises a slider (91) threadedly connected to the first lead screw (101) and a crimping block (92) arranged on the slider (91); the crimping block (92) is slidably arranged on the surface of the slider (91) facing away from the guide plate (8); the crimping block (92) slides along a surface perpendicular to the guide plate (8); and a second driving member is arranged on the slider (91) for driving the crimping block (92) to slide and press against the side wall of the lateral heat sink (1).

3. A welding tool according to claim 1, characterized in that: The guide plate (8) is hinged on the welding base (3), the hinge axis of the guide plate (8) is parallel to the welding base (3) and parallel to the sliding direction of the push block (61), and the welding base (3) is provided with a third driving member for driving the guide plate (8) to rotate to be perpendicular to the welding base (3).

4. A welding tool according to claim 2, characterized in that: The crimping surface of the crimping block (92) is provided with a crimping plate (18), the crimping plate (18) is a retractable structure, the crimping plate (18) is a rectangular plate, the crimping plate (18) comprises a plurality of sleeve plates and a sliding plate, the sliding plate is slidably sleeved in the sleeve plate, and the sleeve plate is used to crimp on the top surface of the lateral heat sink (1) to limit the position of the lateral heat sink (1) after the crimping block (92) fixes the lateral heat sink (1).

5. A welding tool according to claim 4, characterized in that: A fixing groove (19) is provided on the pressing surface of the pressing block (92), and the end of the pressing plate (18) is inserted into the fixing groove (19).

6. A welding tool according to claim 1, characterized in that: An adjustment plate (20) is slidably arranged in the first placement groove (4), and the adjustment plate (20) slides along the depth direction of the first placement groove (4). The adjustment plate (20) is used to receive the main heat sink (2). An adjustment member is arranged in the welding base (3), and the adjustment member is used to adjust the height of the receiving plate to adapt to main heat sinks (2) of different specifications.

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