Terminal welding clamping device

Abstract

The present invention relates to a terminal welding clamping device, comprising a fixed layer, an adjusting layer, an adjusting structure and a terminal, wherein the fixed layer has an inner cavity, a first terminal positioning hole is provided through the fixed layer, the adjusting layer is arranged in the inner cavity and can be translated in the inner cavity, a second terminal positioning hole is provided through the adjusting layer, and the position corresponds to the first terminal positioning hole, the adjusting structure is connected between the fixed layer and the adjusting layer, the terminal is gap-matched with the first terminal positioning hole and the second terminal positioning hole, by moving the adjusting structure, the adjusting structure drives the adjusting layer to translate to a first state, the first terminal positioning hole is concentric with the second terminal positioning hole, the terminal passes through the first terminal positioning hole and the second terminal positioning hole, the adjusting structure is moved, the adjusting structure drives the adjusting layer to translate to a second state, the first terminal positioning hole is eccentric with the second terminal positioning hole and squeezes and fixes the terminal. The terminal of the present invention can be clamped and fixed, and will not shake in a jig or fall off from the jig.

Description

Technical Field

[0001] The invention relates to the technical field of terminal welding, and in particular to a terminal welding clamping device. Background Art

[0002] The existing terminal positioning jig includes several through holes, through which the terminals pass, and there is a gap between the through holes and the terminals. The terminals contact the insulating heat dissipation substrate with their bottom due to their own gravity. Since there are chips and binding wires on the insulating heat dissipation substrate, the plane where the positioning holes are located maintains a certain space with the insulating heat dissipation substrate. When the terminals are reflow soldered, the terminals are usually assembled to the jig first and then assembled with the insulating heat dissipation substrate. During the assembly process, due to the gap between the terminals and the through holes, the terminals have a certain amount of free movement space, and there are problems such as the terminals moving and shaking in the jig during assembly, causing positional displacement or falling off the jig. Therefore, it is necessary to design a device to fix all terminals during the assembly process.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a terminal welding clamping device to solve the problem in the prior art that the terminal is offset in position or falls off from the fixture due to shaking.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] The terminal welding clamping device of the present invention comprises a fixed layer, an adjusting layer, an adjusting structure and a terminal, wherein the fixed layer has an inner cavity, a first terminal positioning hole is provided through the fixed layer, the adjusting layer is arranged in the inner cavity and can be translated in the inner cavity, a second terminal positioning hole is provided through the adjusting layer, and its position corresponds to the first terminal positioning hole, the adjusting structure is connected between the fixed layer and the adjusting layer, and the terminal is gap-matched with the first terminal positioning hole and the second terminal positioning hole; by moving the adjusting structure, the adjusting structure drives the adjusting layer to translate to a first state, the first terminal positioning hole is concentric with the second terminal positioning hole, and the terminal passes through the first terminal positioning hole and the second terminal positioning hole; by moving the adjusting structure, the adjusting structure drives the adjusting layer to translate to a second state, the first terminal positioning hole is eccentric with the second terminal positioning hole and squeezes and fixes the terminal.

[0007] Its further technical solution is that the fixed layer is provided with a first through hole, the second end of the adjustment layer is provided with an arc notch, the adjustment structure is a fixing bolt, the fixing bolt includes a cylindrical portion and an adjusting portion arranged on the cylindrical portion, the cylindrical portion can rotatably pass through the first through hole, the adjusting portion and the arc notch are in the same plane, the adjusting portion includes a pushing portion and a resetting portion connected to the side of the pushing portion, the outer side of the pushing portion has a first arc, the radius of the first arc is the same as the radius of the cylindrical portion, the resetting portion has a second arc, the radius of the second arc is smaller than the first arc, the first arc and the second arc are concentrically arranged with the cylindrical portion, the corresponding central angle of the second arc is 180°, when the second arc is inscribed in the arc notch, the adjustment layer is in the first state, and when the first arc is inscribed in the arc notch, the pushing portion drives the adjustment layer to translate to the second state.

[0008] Its further technical solution is that the terminal welding clamping device also includes a first elastic member, the first end of the first elastic member is connected to the inner wall of the fixed layer, the second end of the first elastic member is connected to the first end of the adjustment layer, when the adjustment layer is in the second state, the pushing part pushes the adjustment layer toward the first end, the adjustment layer squeezes the first elastic member, and the first elastic member is in a compressed state.

[0009] A further technical solution is that the terminal welding clamping device also includes a support column, the support column is fixed through the fixing layer, and the support column and the lower end of the fixing bolt are supported on the metal bottom plate of the product.

[0010] Its further technical solution is that the terminal welding clamping device also includes a second elastic member, the second end of the second elastic member is connected to the fixed layer, the first end of the second elastic member is connected to the adjustment layer, the adjustment layer is in a first state, the second elastic member is in a stretched state, the stretching force of the second elastic member becomes smaller, the adjustment layer is pulled to the second state by the second elastic member, the first terminal positioning hole and the second terminal positioning hole are eccentric and squeeze and fix the terminal.

[0011] A further technical solution is that the adjustment structure includes a waist-shaped hole opened at the second end of the adjustment layer and a square hole opened at the second end of the fixed layer. Looking down at the terminal welding clamping device, when the adjustment layer is in the first state and the second state, the waist-shaped hole is located in the square hole.

[0012] A further technical solution is that the fixed layer also includes a graphite reflow soldering jig, the graphite reflow soldering jig is clamped to the fixed layer, the graphite reflow soldering jig is located on the lower surface of the adjustment layer, and the first terminal positioning hole is provided on the upper surface of the graphite reflow soldering jig.

[0013] A further technical solution is that the fixing layer further comprises a first fixing layer and a second fixing layer, and the first fixing layer and the second fixing layer are detachably connected; wherein the first terminal positioning hole is opened through the first fixing layer and the second fixing layer.

[0014] A further technical solution is that the first fixing layer and the second fixing layer are connected by four-corner threads.

[0015] A further technical solution is that the fixed layer and the adjustment layer are also provided with a laser through hole, and the laser through hole is located on the side of the first terminal positioning hole. When the adjustment layer is in the second state, the laser passes through the laser through hole to weld the terminal to the insulating heat dissipation substrate.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0017] 1. The terminal welding clamping device of the present invention comprises a fixed layer, an adjusting layer, an adjusting structure and a terminal, wherein the fixed layer has an inner cavity, a first terminal positioning hole is provided through the fixed layer, the adjusting layer is arranged in the inner cavity and can be translated in the inner cavity, a second terminal positioning hole is provided through the adjusting layer, and the position corresponds to the first terminal positioning hole, the adjusting structure is connected between the fixed layer and the adjusting layer, and the terminal is gap-matched with the first terminal positioning hole and the second terminal positioning hole; by using the adjusting structure, the adjusting structure is moved, and the adjusting structure drives the adjusting layer to translate to a first state, the first terminal positioning hole is concentric with the second terminal positioning hole, and the terminal passes through the first terminal positioning hole and the second terminal positioning hole; the adjusting structure is moved, and the adjusting structure drives the adjusting layer to translate to a second state, the first terminal positioning hole is eccentric with the second terminal positioning hole and squeezes the fixed terminal, and the terminal is in a clamped state and will not shake in the jig or fall off from the jig.

[0018] 2. Furthermore, after being assembled with the substrate, the clamping and releasing of the terminal is achieved by adjusting the adjustment structure, and the terminal is in a controllable state, which can not only ensure good contact between the terminal and the insulating heat dissipation substrate, but also prevent the terminal from tilting.

[0019] 3. Furthermore, the terminal welding clamping device also includes a first elastic member, which rotates the cylindrical part 180°. Since the radius of the second arc is smaller than that of the first arc, a gap is generated between the reset part and the arc notch, and the first elastic member is in a compressed state, so that the first elastic member pushes the adjustment layer to inscribe the first arc and the arc notch. The adjustment layer is in a first state, and the first terminal positioning hole is concentric with the second terminal positioning hole. After the terminal passes through the first terminal positioning hole and the second terminal positioning hole, the fixing part is rotated 180° again, and the pushing part drives the adjustment layer to translate to the second state. The adjustment layer squeezes the first elastic member, and the first terminal positioning hole and the second terminal positioning hole are eccentric and squeeze the fixed terminal. The first elastic member provides a reset function, which makes the structure more stable and makes the present invention more labor-saving.

[0020] 4. Furthermore, the fixing layer also includes a graphite reflow soldering jig, which is clamped to the fixing layer. The graphite reflow soldering jig is located on the lower surface of the adjustment layer, and the first terminal positioning hole is arranged on the upper surface of the graphite reflow soldering jig. Graphite has a high melting point and a small thermal expansion coefficient, and is resistant to high temperatures. The strength of graphite increases with increasing temperature. At 2000°C, the strength of graphite is doubled, and the impact of metal jigs on the ambient temperature in the reflow furnace is significantly reduced compared to metal jigs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front structure of the first embodiment of the terminal welding clamping device of the present invention.

[0022] Figure 2 It is a schematic diagram of the vertical cross-section structure of the first embodiment of the terminal welding clamping device of the present invention in the first state.

[0023] Figure 3 It is a schematic diagram of the vertical cross-section structure of the second state of the first embodiment of the terminal welding clamping device of the present invention.

[0024] Figure 4 It is a schematic cross-sectional structure diagram of the second state of the first embodiment of the terminal welding clamping device of the present invention.

[0025] Figure 5 It is a schematic top view of the structure of the second embodiment of the terminal welding clamping device of the present invention.

[0026] Figure 6 It is a schematic diagram of the front structure of the second embodiment of the terminal welding clamping device of the present invention.

[0027] Markings in the accompanying drawings:

[0028] 1. Fixed layer; 11. Inner cavity; 12. First fixed layer; 13. Second fixed layer; 14. First terminal positioning hole; 15. First through hole; 16. Square hole; 17. Graphite reflow soldering fixture; 2. Adjustment layer; 21. Second terminal positioning hole; 22. Arc notch; 23. Waist-shaped hole; 3. Adjustment structure; 31. Fixing bolt; 311. Cylindrical part; 312. Adjustment part; 3121. Pushing part; 31211. First arc; 3122. Reset part; 31221. Second arc; 4. Terminal; 5. First elastic member; 6. Support column; 7. Second elastic member; 8. Laser through hole; 9. Metal base plate; 10. Insulating heat dissipation substrate. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0031] First embodiment:

[0032] This embodiment discloses a terminal welding clamping device.

[0033] like Figure 1 to Figure 6 As shown, the terminal welding clamping device includes a fixing layer 1, an adjusting layer 2 and an adjusting structure 3.

[0034] Figure 1 It is a schematic diagram of the front structure of the first embodiment of the terminal welding clamping device of the present invention. Figure 2 This is a schematic diagram of a vertical cross-section of the first embodiment of the terminal welding clamping device of the present invention in the first state. Figure 1 and Figure 2 As shown, the fixing layer 1 has an inner cavity 11. Exemplarily, the fixing layer 1 includes a first fixing layer 12 and a second fixing layer 13, and the first fixing layer 12 and the second fixing layer 13 are detachably connected. Specifically, the first fixing layer 12 and the second fixing layer 13 are threadedly connected at four corners. The first terminal positioning hole 14 is opened through the fixing layer 1.

[0035] like Figure 1 and Figure 2 As shown, the adjustment layer 2 is disposed in the inner cavity 11 and can translate in the inner cavity 11 . The second terminal positioning hole 21 is opened through the adjustment layer 2 , and its position corresponds to the first terminal positioning hole 14 .

[0036] Figure 3 It is a schematic diagram of the vertical cross-section structure of the second state of the first embodiment of the terminal welding clamping device of the present invention. Figure 4 This is a cross-sectional structural diagram of the second state of the first embodiment of the terminal welding clamping device of the present invention. Figure 1 to Figure 4As shown, the adjustment structure 3 is connected between the fixed layer 1 and the adjustment layer 2. Exemplarily, the fixed layer 1 is provided with a first through hole 15, the second end of the adjustment layer 2 is provided with an arc notch 22, the adjustment structure 3 is a fixing bolt 31, the fixing bolt 31 includes a cylindrical portion 311 and an adjustment portion 312 disposed on the cylindrical portion 311, the cylindrical portion 311 can rotatably pass through the first through hole 15, the adjustment portion 312 and the arc notch 22 are in the same plane, the adjustment portion 312 includes a pushing portion 3121 and a reset portion 3122 connected to the side of the pushing portion 3121, the outer side of the pushing portion 3121 has a first arc 31211, and the first arc The radius of 31211 is the same as the radius of the cylindrical portion 311, the reset portion 3122 has a second arc 31221, the radius of the second arc 31221 is smaller than the first arc 31211, the first arc 31211 and the second arc 31221 are concentrically arranged with the cylindrical portion 311, the corresponding central angle of the second arc 31221 is 180°, when the second arc 31221 is inscribed in the arc notch 22, the adjustment layer 2 is in the first state, when the first arc 31211 is inscribed in the arc notch 22, the pushing portion 3121 drives the adjustment layer 2 to translate to the second state.

[0037] like Figure 2 As shown, the terminal 4 is loosely matched with the first terminal positioning hole 14 and the second terminal positioning hole 21 .

[0038] like Figure 2 to Figure 4 As shown, further, the terminal welding clamping device also includes a first elastic member 5, a first end of the first elastic member 5 is connected to the inner wall of the fixed layer 1, and a second end of the first elastic member 5 is connected to the first end of the adjusting layer 2. When the adjusting layer 2 is in the second state, the pushing portion 3121 pushes the adjusting layer 2 toward the first end, and the adjusting layer 2 squeezes the first elastic member 5. The first elastic member 5 is in a compressed state. The first elastic member 5 provides a reset function, and the structural stability is higher, making the present invention more labor-saving.

[0039] like Figure 1 As shown, further, the terminal welding clamping device also includes a support column 6, which is fixed through the fixing layer 1. The support column 6 and the lower end of the fixing bolt 31 are supported on the product metal bottom plate 9 to achieve positioning of the terminal 4 during welding.

[0040] Furthermore, the fixed layer 1 and the adjustment layer 2 are also provided with a laser through hole 8, which is located on the side of the first terminal positioning hole 14. When the adjustment layer 2 is in the second state, the laser passes through the laser through hole 8 to weld the terminal to the insulating heat dissipation substrate 10.

[0041] When this embodiment is working:

[0042] Step S1 , soldering the chip to the insulating heat dissipation substrate 10 , and at the same time, the solder used for soldering the terminal 4 is attached to the corresponding position on the insulating heat dissipation substrate 10 .

[0043] Step S2 , welding the insulating heat dissipation substrate 10 and the metal bottom plate 9 .

[0044] Step S3, using bonding wires to form an electrical circuit between the chip and the insulating heat dissipation substrate 10.

[0045] Step S4, rotate the cylindrical portion 311 180°. Since the radius of the second arc 31221 is smaller than that of the first arc 31211, a gap is generated between the reset portion 3122 and the arc notch 22. The first elastic member 5 is in a compressed state, so that the first elastic member 5 pushes the adjustment layer 2, so that the second arc 31221 and the arc notch 22 are inscribed. The adjustment layer 2 is in the first state, the first terminal positioning hole 14 is concentric with the second terminal positioning hole 21, and after the terminal 4 passes through the first terminal positioning hole 14 and the second terminal positioning hole 21, rotate the cylindrical portion 311 180° again, and the pushing portion 3121 drives the adjustment layer 2 to translate to the second state. The adjustment layer 2 squeezes the first elastic member 5, and the first terminal positioning hole 14 and the second terminal positioning hole 21 are eccentric and squeeze the fixed terminal 4, and the terminal 4 is in a clamped and locked state.

[0046] Step S5, after assembling the objects of step S3 and step S4, rotate the cylindrical part 311 180°, the first elastic member 5 pushes the adjustment layer 2, so that the second arc 31221 is inscribed in the arc notch 22, the adjustment layer 2 is in the first state, the terminal 4 falls, the terminal 4 is in close contact with the insulating heat dissipation substrate 10, and the cylindrical part 311 is rotated 180° again, the pushing part 3121 drives the adjustment layer 2 to translate to the second state, the adjustment layer 2 squeezes the first elastic member 5, the first terminal positioning hole 14 and the second terminal positioning hole 21 are eccentric and squeeze the fixed terminal 4, and the terminal 4 is locked to ensure that the terminal 4 is perpendicular to the insulating heat dissipation substrate 10.

[0047] Step S6, reflow soldering or laser welding process is performed on the assembly of step S5, and the laser passes through the laser through hole 8 on the terminal clamping fixture to weld the terminal 4 to the insulating heat dissipation substrate 10.

[0048] In this example, the pushing portion 3121 drives the adjustment layer 2 to translate to the second state, and the terminal 4 is in a clamped state and will not shake in the fixture or fall off the fixture. The clamping and release of the terminal 4 are achieved by adjusting the adjustment structure 3. The terminal 4 is in a controllable state, which can not only ensure good contact between the terminal 4 and the insulating heat dissipation substrate 10, but also prevent the terminal 4 from tilting.

[0049] Second embodiment:

[0050] Based on the first embodiment, the second embodiment further optimizes and refines the adjustment structure 3 of the first embodiment.

[0051] Figure 5FIG. 2 is a schematic diagram of the front view of the second embodiment of the terminal welding clamping device of the present invention. Figure 4 and Figure 5 As shown, the terminal welding clamping device also includes a second elastic member 7, the second end of the second elastic member 7 is connected to the fixed layer 1, the first end of the second elastic member 7 is connected to the adjustment layer 2, the adjustment layer 2 is in the first state, the second elastic member 7 is in a stretched state, the stretching force of the second elastic member 7 becomes smaller, the adjustment layer 2 is pulled to the second state by the second elastic member 7, the first terminal positioning hole 14 and the second terminal positioning hole 21 are eccentric and squeeze the fixed terminal 4. Exemplary,

[0052] like Figure 5 and Figure 6 As shown, further, the adjustment structure 3 includes a waist-shaped hole 23 opened at the second end of the adjustment layer 2 and a square hole 16 opened at the second end of the fixed layer 1. Looking down at the terminal welding clamping device, when the adjustment layer 2 is in the first state and the second state, the waist-shaped hole 23 is located in the square hole 16.

[0053] like Figure 6 As shown, further, the fixed layer 1 also includes a graphite reflow soldering jig 17, which clamps the fixed layer 1, is located on the lower surface of the adjustment layer 2, and the first terminal positioning hole 14 is provided on the upper surface of the graphite reflow soldering jig 17.

[0054] When this embodiment works:

[0055] Step S1 , soldering the chip to the insulating heat dissipation substrate 10 , and at the same time, the solder used for soldering the terminal 4 is attached to the corresponding position on the insulating heat dissipation substrate 10 .

[0056] Step S2, using bonding wires to form an electrical circuit between the chip and the insulating heat dissipation substrate 10.

[0057] Step S3, after the second fixed layer 13 and the graphite reflow soldering jig 17 are snap-fitted and assembled, the waist-shaped hole 23 is pulled to the second end of the square hole 16, so that the adjustment layer 2 is in the first state, and the second elastic member 7 is stretched by the adjustment layer 2. After the terminal 4 passes through the first terminal positioning hole 14 and the second terminal positioning hole 21, the waist-shaped hole 23 is released, and the adjustment layer 2 is pulled to the second state by the second elastic member 7. At this time, the tensile force of the second elastic member 7 becomes smaller but still exists, and the first terminal positioning hole 14 and the second terminal positioning hole 21 are eccentric and squeeze the fixed terminal 4, and it will not fall off the jig.

[0058] Step S4, assembling the insulating heat dissipation substrate 10 in step S2 to the graphite reflow soldering jig 17 in step S3.

[0059] Step S5, putting the assembly in step S4 into a reflow furnace. Pull the waist-shaped hole 23 to the second end of the square hole 16, so that the adjustment layer 2 is in the first state, release the lock on the terminal 4, and remove the terminal clamping fixture. Solder the terminal 4 to the insulating heat dissipation substrate 10 through the graphite reflow soldering fixture 17.

[0060] In this example, the fixed layer 1 also includes a graphite reflow soldering jig 17, which is clamped to the fixed layer 1. The graphite reflow soldering jig 17 is located on the lower surface of the adjustment layer 2, and the first terminal positioning hole 14 is provided on the upper surface of the graphite reflow soldering jig 17. Graphite has a high melting point and a small thermal expansion coefficient, and is resistant to high temperatures. The strength of graphite increases with increasing temperature. At 2000°C, the strength of graphite is doubled, and the impact of metal jigs on the ambient temperature in the reflow furnace is significantly reduced compared to metal jigs.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A terminal welding clamping device, characterized in that: include: The fixed layer has an inner cavity and includes: A first terminal positioning hole is formed through the fixing layer; The adjustment layer is arranged in the inner cavity and translates in the inner cavity, and includes: A second terminal positioning hole is formed through the adjusting layer and has a position corresponding to the first terminal positioning hole; An adjusting structure connected between the fixing layer and the adjusting layer; A terminal, which is gap-matched with the first terminal positioning hole and the second terminal positioning hole; The adjusting structure is moved, and the adjusting structure drives the adjusting layer to translate to a first state, the first terminal positioning hole is concentric with the second terminal positioning hole, and the terminal passes through the first terminal positioning hole and the second terminal positioning hole; the adjusting structure is moved, and the adjusting structure drives the adjusting layer to translate to a second state, the first terminal positioning hole is eccentric with the second terminal positioning hole and squeezes and fixes the terminal; The fixing layer is provided with a first through hole, and the second end of the adjusting layer is provided with an arc notch. The adjusting structure is a fixing bolt, and the fixing bolt includes a cylindrical portion and an adjusting portion arranged on the cylindrical portion. The cylindrical portion rotates through the first through hole, and the adjusting portion and the arc notch are in the same plane. The adjusting portion includes a pushing portion and a resetting portion connected to the side of the pushing portion. The outer side of the pushing portion has a first arc, and the radius of the first arc is the same as the radius of the cylindrical portion. The resetting portion has a second arc, and the radius of the second arc is smaller than the first arc. The first arc and the second arc are concentrically arranged with the cylindrical portion, and the corresponding central angle of the second arc is 180°. When the second arc is inscribed in the arc notch, the adjusting layer is in the first state, and when the first arc is inscribed in the arc notch, the pushing portion drives the adjusting layer to translate to the second state.

2. The terminal welding clamping device according to claim 1, characterized in that: The terminal welding clamping device also includes a first elastic member, a first end of the first elastic member is connected to the inner wall of the fixed layer, and a second end of the first elastic member is connected to the first end of the adjustment layer. When the adjustment layer is in the second state, the pushing portion pushes the adjustment layer toward the first end, and the adjustment layer squeezes the first elastic member, and the first elastic member is in a compressed state.

3. The terminal welding clamping device according to claim 2, characterized in that: The terminal welding clamping device also includes a support column, which is fixed through the fixing layer, and the support column and the lower end of the fixing bolt are supported on the metal bottom plate of the product.

4. The terminal welding clamping device according to claim 1, characterized in that: The terminal welding clamping device also includes a second elastic member, a second end of the second elastic member is connected to the fixed layer, and a first end of the second elastic member is connected to the adjustment layer. When the adjustment layer is in a first state, the second elastic member is in a stretched state, the stretching force of the second elastic member becomes smaller, and the adjustment layer is pulled to a second state by the second elastic member. The first terminal positioning hole and the second terminal positioning hole are eccentric and squeeze and fix the terminal.

5. The terminal welding clamping device according to claim 4, characterized in that: The adjustment structure includes a waist-shaped hole opened at the second end of the adjustment layer and a square hole opened at the second end of the fixed layer. Looking down at the terminal welding clamping device, when the adjustment layer is in the first state and the second state, the waist-shaped hole is located in the square hole.

6. The terminal welding clamping device according to claim 4, characterized in that: The fixed layer also includes a graphite reflow soldering jig, which is clamped to the fixed layer and located on the lower surface of the adjustment layer. The first terminal positioning hole is provided on the upper surface of the graphite reflow soldering jig.

7. The terminal welding clamping device according to claim 1, characterized in that: The fixing layer further comprises a first fixing layer and a second fixing layer, and the first fixing layer and the second fixing layer are detachably connected; wherein the first terminal positioning hole is opened through the first fixing layer and the second fixing layer.

8. The terminal welding clamping device according to claim 7, characterized in that: The first fixing layer and the second fixing layer are connected by four-corner threads.

9. The terminal welding clamping device according to claim 1, characterized in that: The fixing layer and the adjusting layer are also provided with laser through holes, and the laser through holes are located on the side of the first terminal positioning hole. When the adjusting layer is in the second state, the laser passes through the laser through holes to weld the terminal to the insulating heat dissipation substrate.

Images