Welding tool

Abstract

The invention relates to a welding tool and belongs to the technical field of cooling fin machining, the welding tool comprises a welding base, a first containing groove and a second containing groove are formed in the welding base, the first containing groove is used for containing main cooling fins, and the second containing groove is used for containing lateral cooling fins; the number of the second placing grooves is consistent with that of the lateral cooling fins, the second placing grooves are located on the two sides of the first placing groove, the second placing grooves communicate with the first placing groove, after the lateral cooling fins are placed in the second placing grooves, one ends of the lateral cooling fins are in lap joint with the main body cooling fins, and the other ends of the lateral cooling fins are placed on the bottom walls of the second placing grooves; the pushing piece is used for pushing the lateral cooling fins to abut against the main body cooling fins, and the lateral cooling fins on the other side abut against the side wall of the second containing groove. The welding device 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 tool. Background Art

[0002] Heat sinks are mainly used to dissipate heat from heat-generating electronic components. They are mostly made of aluminum alloy, brass or bronze, etc. They are mostly in the shape of plates and sheets. During the processing of ordinary heat sinks, they are usually turned, ground and scraped in sequence before finally taking shape.

[0003] like Figure 1 and Figure 2 As shown, some slightly complex heat sinks also need to be made into a combined heat dissipation structure by welding or the like, for example, the lateral heat sink 1 is welded to the main heat sink 2 .

[0004] However, during the welding process, the components of the heat sink are prone to relative displacement, resulting in 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 tool.

[0006] The welding tool provided in this application adopts the following technical solution: A welding tool comprises a welding base, wherein a first placement groove and a second placement groove are provided on the welding base, wherein the first placement groove is used to accommodate a main heat sink, and the second placement groove is used to accommodate a lateral heat sink, the number of the second placement grooves is consistent with the number of the lateral heat sinks, and the second placement grooves are located on both sides of the first placement grooves, the second placement grooves are connected to the first placement grooves, and after the lateral heat sinks are placed in the second placement grooves, one end of the lateral heat sink is overlapped on the main heat sink, and the other end is placed on the bottom wall of the second placement groove, and a pushing member is provided on the welding base, and the pushing member is used to push the lateral heat sink against the main heat sink, and make the lateral heat sink on the other side against the side wall of the second placement groove.

[0007] Optionally, a third placement groove is provided on the welding base, and the pushing member includes a pushing block, a driving block, a pressing block and a fixed block slidably arranged in the third placement groove, the fixed block, pressing block, driving block and pushing block are linearly arranged and move away from the lateral heat sink in sequence, the pressing block is located between the fixed block and the driving block and is slidably clamped on the fixed block and the driving block, the contact surface of the pressing block and the driving block is an inclined surface and the inclined surface of the pressing block faces the bottom wall and side wall of the third placement groove, when the pressing block slides toward the bottom wall of the third placement groove, it pushes the driving block and drives the pushing block to abut the lateral heat sink and push the lateral heat sink to move; the pushing member also includes a driving bolt, which passes through the pressing block and is threadedly connected to the bottom wall of the third placement groove, and the driving bolt rotates to drive the pressing block to move downward.

[0008] Optionally, a guide plate is provided on the welding base, and the guide plate is arranged on both sides of the lateral heat sink. A clamping block is slidably provided on the guide plate, and the clamping block is used to clamp and fix the two sides of the lateral heat sink. A first driving member is provided on the guide plate, and the first driving member is used to drive the clamping block to slide and drive the installation corner of the lateral heat sink to be clamped on the installation corner of the main heat sink.

[0009] Optionally, the first driving member includes a first screw rotatably set on the guide plate, the clamping block is threadedly connected to the first screw, the angle between the first screw and the welding base is 45 degrees, and when the main heat sink is not coated with solder, the lateral heat sink is clamped at the corner of the main heat sink, and then the clamping block is moved to the side of the lateral heat sink and clamped, and then the lateral heat sink is separated from the main heat sink through the clamping block, and then solder is applied to the installation corner of the main heat sink.

[0010] Optionally, the clamping block includes a sliding block threadedly connected to the first screw and a crimping block arranged on the sliding block, the crimping block is slidably arranged on the surface of the sliding block facing away from the guide plate, the crimping block slides along a surface perpendicular to the guide plate, and the sliding block is provided with a second driving member for driving the crimping block to slide and press against the side wall of the lateral heat sink.

[0011] Optionally, the guide plate is hinged on the welding base, the hinge axis of the guide plate is parallel to the welding base and parallel to the sliding direction of the push block, and the welding base is provided with a third driving member for driving the guide plate to rotate to be perpendicular to the welding base.

[0012] Optionally, a vertical screw and a transverse screw are provided on the guide plate, the transverse screw and the vertical screw are perpendicular to each other, the transverse screw is rotatably provided on the guide plate, a mounting seat is threadedly connected to the transverse screw, the vertical screw is rotatably provided on the mounting seat, a sliding seat is threadedly connected to the vertical screw, the first screw is rotatably provided on the mounting seat, and the angles between the first screw and the vertical screw and the transverse screw are 45 degrees.

[0013] Optionally, the crimping surface of the crimping block is provided with a crimping plate, which is a retractable structure and a rectangular plate. The crimping plate includes a plurality of sleeve plates and a sliding plate, and the sliding plate is slidably sleeved in the sleeve plate. The sleeve plate is used to crimp on the top surface of the lateral heat sink to limit the lateral heat sink after the crimping block fixes the lateral heat sink.

[0014] Optionally, a fixing groove is provided on the crimping surface of the crimping block, and the end of the crimping plate is inserted into the fixing groove.

[0015] Optionally, an adjustment plate is slidably arranged in the first placement groove, and the adjustment plate slides along the depth direction of the first placement groove. The adjustment plate is used to receive the main heat sink. An adjustment member is arranged in the welding base, and the adjustment member is used to adjust the height of the receiving plate to adapt to main heat sinks of different specifications.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: When welding the heat sink, the main body heat sink is placed in the first placement groove, and tin solder is applied to the welding place of the main body heat sink, and then the lateral heat sink is placed in the second placement groove, one side of the lateral heat sink is pressed against the soldering place of the main body heat sink, and the other end is supported on the bottom wall of the second placement groove. At this time, the lateral heat sink is in a horizontal state, and then the lateral heat sink and the main body heat sink are initially positioned and fixed using screws, and then the lateral heat sink is pushed by the pushing member to make the lateral heat sink press against the main body heat sink, and the main body heat sink abuts against the lateral heat sink on the other side to fix both the main body heat sink and the lateral heat sink on the welding base, and then the screws are turned again to fix the lateral heat sink on the main body heat sink, and then the welding base and the heat sink are moved into the soldering machine together for heating, so that the solder is hot-melted to complete the welding of the lateral heat sink and the main body heat sink, and under the cooperation of the pushing member and the screw, the lateral heat sink and the main body heat sink are fixed on the welding base, which reduces the possibility of relative displacement of the lateral heat sink and the main body heat sink during welding, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the heat sink; Figure 2 is a cross-sectional view of the side heat sink and the main heat sink; Figure 3 This is a schematic diagram of the overall structure of a welding tool in an embodiment of the present application; Figure 4 It is an exploded schematic diagram of a welding tool heat sink and a welding base in an embodiment of the present application; Figure 5 It is a cross-sectional view of a welding base in a welding tool according to an embodiment of the present application; Figure 6 It is a structural schematic diagram of a guide plate in a welding tooling in an embodiment of the present application; Figure 7 yes Figure 6 Enlarged schematic diagram of part A.

[0018] Description of reference numerals: 1, lateral heat sink; 2, main heat sink; 3, welding base; 4, first placement groove; 5, second placement groove; 6. Pushing member; 61. Pushing block; 62. Driving block; 63. Pressing block; 64. Fixing block; 65. Driving bolt; 7. The third placement slot; 8. The guide plate; 9. Clamping block; 91. Sliding block; 92. Pressing block; 93. Micro push rod; 10. First driving member; 101. First lead screw; 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. adjustment plate; 21. first push rod. DETAILED DESCRIPTION

[0019] The following is combined with Figure 3 -Attached Figure 7 This application is described in further detail.

[0020] The present application embodiment discloses a welding tool. Figure 3 and Figure 4 The welding tool includes a welding base 3, on which a first placement groove 4 and a second placement groove 5 are provided. 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. The number of the second placement grooves 5 is consistent with the number of the lateral heat sink 1, and is located on both sides of the first placement groove 4. The second placement groove 5 is connected to 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 is overlapped on the main heat sink 2, and the other end is placed on the bottom wall of the second placement groove 5. A pushing member 6 is provided on the welding base 3. The pushing member 6 is used to push the lateral heat sink 1 against the main heat sink 2, and make the lateral heat sink 1 on the other side against the side wall of the second placement groove 5.

[0021] When welding the heat sink, place the main heat sink 2 in the first placement groove 4, apply solder to the welding part of the main heat sink 2, and 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 soldering part of the main heat sink 2, and the other end is supported on the bottom wall of the second placement groove 5. At this time, the lateral heat sink 1 is in a horizontal state. Then, screws are used to preliminarily position and fix the lateral heat sink 1 and the main heat sink 2. Then, the lateral heat sink 1 is pushed by the pusher 6 so that the lateral heat sink 1 is pressed against the main heat sink 2, and the main heat sink 2 is pressed against the other side. The lateral heat sink 1 is used to fix both the main heat sink 2 and the lateral heat sink 1 on the welding base 3, and then the screws are turned to fix the lateral heat sink 1 on the main heat sink 2, and then the welding base 3 and the heat sink are moved into the soldering machine for heating, so that the solder is hot-melted to complete the welding of the lateral heat sink 1 and the main heat sink 2. Under the cooperation of the pushing member 6 and the screws, the lateral heat sink 1 and the main heat sink 2 are fixed on the welding base 3, which reduces the possibility of relative displacement of the lateral heat sink 1 and the main heat sink 2 during the welding process, thereby improving the welding quality.

[0022] Reference Figure 4 and Figure 5 In the embodiment of the present application, a third placement groove 7 is provided on the welding base 3, and the third placement groove 7 is connected to the second placement groove 5 on one side. The pushing member 6 includes 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 fixed block 64 and the driving block 62 and is slidably engaged with the fixed block 64 and the driving block 6 2, the contact surfaces of the pressing block 63 and the driving block 62 are inclined surfaces, 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 to drive 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.

[0023] After the main heat sink 2 and the lateral heat sink 1 are placed in the first placement groove 4 and the second placement groove 5 respectively, the driving bolt 65 is rotated, and the end of the driving bolt 65 is crimped on the end of the pressing block 63 and drives the pressing block 63 to move gradually downward. When the pressing block 63 moves downward, it pushes the driving block 62 and the pushing block 61 to slide, and the pushing block 61 slides and abuts against the lateral heat sink 1. The operation is simple and convenient.

[0024] Reference Figure 6 and Figure 7 In the embodiment of the present application, after the solder paste is applied to the installation location of the main radiator, the solder paste is relatively uniform, flat and full. When the lateral heat sink 1 is crimped on the solder paste and pushes the lateral heat sink 1 to move, the lateral heat sink 1 pushes the solder paste to move, which can easily lead to 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, and the guide plate 8 is provided on both sides of the lateral heat sink 1. A clamping block 9 is slidably provided 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 provided 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 on 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 sent to 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, and the lateral heat sink 1 is obliquely clamped on the installation position of the main heat sink 2. At this time, the solder paste is squeezed by the lateral heat sink 1 instead of being pushed, so that the continuity of the solder paste is not affected, thereby further improving the welding quality of the heat sink.

[0025] Reference Figure 6 and Figure 7 In the embodiment of the present application, the first driving member 10 includes a first screw 101 rotatably arranged on the guide plate 8, the clamping block 9 is threadedly connected to the first screw 101, and 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 lateral heat sink 1 is separated from the main heat sink 2 by the clamping block 9, and then solder is applied to the installation corner of the main heat sink 2; before the solder paste is applied, First, install the lateral heat sink 1 at the installation position on the main heat sink 2. At this time, the lateral heat sink 1 is tightly fitted on the main heat sink 2. Then, rotate the first screw 101. The rotation of the first 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 first screw 101 drives the clamping block 9 and the lateral heat sink 1 to move and separate from the main heat sink 2. Then, apply solder paste to the main heat sink 2. Then, rotate the first screw 101 to drive the lateral heat sink 1 to be clamped at the corner of the main heat sink 2.

[0026] Reference Figure 6 and Figure 7 , in order to facilitate the clamping block 9 to clamp 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 arranged on the slider 91, the crimping block 92 is slidably arranged on the surface of the slider 91 away from the guide plate 8, and the crimping block 92 slides along the surface perpendicular to the guide plate 8, and the slider 91 is provided with a second driving member for driving the crimping block 92 to slide and press against the side wall of the lateral heat sink 1, and the second driving member includes a micro push rod 93 arranged in the slider 91, and a groove 11 is opened on the slider 91, and the crimping block 92 and the micro push rod 93 are both 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 runs 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 be crimped on 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.

[0027] Reference Figure 6 and Figure 7In the embodiment of the present application, the guide plate 8 is hinged on the welding base 3, and 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. 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, and the third driving member includes a first motor 12 arranged on the welding base 3, and the hinge axis 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 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, so as to facilitate the hot melting of the solder paste; further, a cooling groove 13 is opened on the welding base 3, and after the guide plate 8 is fitted on the welding base 3, the guide plate 8 is located in the cooling groove 13, and the cooling liquid or cooling water can be injected into the cooling groove 13.

[0028] Reference Figure 6 and Figure 7 In order 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 heat sink 2 in a direction of 45 degrees, a vertical screw 14 and a transverse screw 15 are provided on the guide plate 8, the transverse screw 15 and the vertical screw 14 are perpendicular to each other, the transverse screw 15 is rotatably set on the guide plate 8, the transverse screw 15 is threadedly connected with a mounting seat 16, the vertical screw 14 is rotatably set on the mounting seat 16, the vertical screw 14 is threadedly connected with a slide seat 17, the first screw 101 is rotatably set on the mounting seat 16, and the angles between the first screw 101 and the vertical screw 14 and the transverse screw 15 are all 45 degrees; the position of the first screw 101 is adjusted by the transverse screw 15 and the vertical screw 14, and then the position of the clamping block 9 is adjusted by the first screw 101, so that the clamping block 9 adapts to the position of the lateral heat sink 1, and the subsequent feeding operation of the lateral heat sink 1 is convenient.

[0029] Reference Figure 5 and Figure 6 When the pushing block 61 acts on the lateral heat sink 1, the lateral heat sink 1 is easily convexed and bent due to the extrusion force because the texture of the heat sink is relatively soft and the hardness is average. Therefore, in the embodiment of the present application, the crimping surface of the crimping block 92 is provided with a crimping plate 18, and the crimping plate 18 is a retractable structure. The crimping plate 18 is used to connect the crimping blocks 92 on both sides. The crimping plate 18 is a rectangular plate. The crimping plate 18 includes a plurality of sleeve plates and a sliding plate. The sliding plate is slidably sleeved in the sleeve plate. The sleeve plate is used to fix the lateral heat sink 1 with the crimping block 92, and then crimped on the top surface of the lateral heat sink 1 to limit the lateral heat sink 1; after the clamping block 9 clamps the lateral heat sink 1, the crimping plate 18 is moved between the two crimping blocks 92, and the crimping plate 18 is installed on the crimping block 92. At this time, the crimping plate 18 spans the lateral heat sink 1 and is crimped on the lateral heat sink 1, thereby reducing the possibility of deformation of the lateral heat sink 1 due to the extrusion force.

[0030] Reference Figure 5 and Figure 6 Furthermore, in order to facilitate the installation of the crimping plate 18 on the crimping block 92 , a fixing groove 19 is provided on the crimping surface of the crimping block 92 , and the end of the crimping plate 18 is inserted into the fixing groove 19 .

[0031] Reference Figure 5 In order to adapt the welding base 3 to heat sinks of different specifications, an adjusting plate 20 is slidably arranged in the first placement groove 4, and the adjusting plate 20 slides along the depth direction of the first placement groove 4, and the adjusting plate 20 is used to receive the main heat sink 2, and an adjusting member is arranged in the welding base 3, and the adjusting member is used to adjust the height of the receiving plate to adapt to the main heat sinks 2 of different specifications, and the adjusting member includes a first push rod 21 arranged in the first placement groove 4, and 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, and the receiving plate is fixedly arranged on the output shaft of the first push rod 21; the height of the receiving plate is adjusted by the first push rod 21, so that the main heat sink 2 of different thickness specifications is placed 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. When the installation angle of the main heat sink 2 is moved out, the position of the clamping block 9 is adjusted by the horizontal screw 15, the vertical screw 14 and the first screw 101, so that the welding tooling can adapt to different lateral heat sinks 1 and main heat sinks 2.

[0032] The implementation principle of a welding tool in the embodiment of the present application is: When welding the heat sink, place the main heat sink 2 in the first placement groove 4, apply solder to the welding part of the main heat sink 2, and 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 soldering part of the main heat sink 2, and the other end is supported on the bottom wall of the second placement groove 5. At this time, the lateral heat sink 1 is in a horizontal state. Then, screws are used to preliminarily position and fix the lateral heat sink 1 and the main heat sink 2. Then, the lateral heat sink 1 is pushed by the pusher 6 so that the lateral heat sink 1 is pressed against the main heat sink 2, and the main heat sink 2 is pressed against the other side. The lateral heat sink 1 is used to fix both the main heat sink 2 and the lateral heat sink 1 on the welding base 3, and then the screws are turned to fix the lateral heat sink 1 on the main heat sink 2, and then the welding base 3 and the heat sink are moved into the soldering machine for heating, so that the solder is hot-melted to complete the welding of the lateral heat sink 1 and the main heat sink 2. Under the cooperation of the pushing member 6 and the screws, the lateral heat sink 1 and the main heat sink 2 are fixed on the welding base 3, which reduces the possibility of relative displacement of the lateral heat sink 1 and the main heat sink 2 during the welding process, thereby improving the welding quality.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present 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), and make the lateral heat sink (1) on the other side against the side wall of the second placement groove (5).

2. A welding tool according to claim 1, characterized in that: 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), and the driving bolt (65) 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.

3. A welding tool according to claim 2, characterized in that: 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).

4. A welding tool according to claim 3, characterized in that: 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); the clamping block (9) is then moved to the side of the lateral heat sink (1) and clamped to the lateral heat sink (1); the lateral heat sink (1) is then separated from the main heat sink (2) by the clamping block (9); and solder is then coated to the installation corner of the main heat sink (2).

5. A welding tool according to claim 4, 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).

6. A welding tool according to claim 3, 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).

7. A welding tool according to claim 4, characterized in that: 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 sliding seat (17) is threadedly connected to the vertical lead screw (14); the first lead screw (101) is rotatably arranged on the mounting seat (16); 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.

8. A welding tool according to claim 5, 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).

9. A welding tool according to claim 8, 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).

10. 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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