Special processing equipment for S curved needle for IGBT (Insulated Gate Bipolar Translator) module

Abstract

The invention provides special machining equipment for an S curved needle for an IGBT module, and belongs to the technical field of curved needle machining, the special machining equipment comprises a feeding mechanism and a stamping mechanism, the feeding mechanism comprises a movable disc, a static disc and a discharging assembly, the static disc and the movable disc are coaxially arranged, the discharging assembly is installed on the movable disc and used for containing needle pieces, and the stamping mechanism comprises an upper die, a lower die and a profiling protection head. Before the upper die and the lower die are closed, the profiling protection head is matched with the profiling supporting head to hold the non-machining part of the needle piece and enable the vertical moving seat to move downwards along with the profiling protection head until the upper die and the lower die are closed. According to the machining equipment special for the S-shaped curved needle for the IGBT module, the feeding mechanism enables a needle piece to enter the stamping station in the state that the cap-shaped end and the machining part are fully exposed, after the needle piece enters the stamping station, the needle piece enters the stamping state, in the stamping process, a profiling protection head and a profiling supporting head are matched to hold the non-machining part of the needle piece, and then the needle piece is pressed; and the efficiency and quality of stamping machining and the stability of continuous machining are integrally and effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of bent pin processing, in particular to a special processing device for S bent pins for IGBT modules. Background Art

[0002] IGBT modules are widely used in the field of power electronics. As one of the important components of IGBT modules, the processing quality of S-pins will directly affect the performance and reliability of IGBT modules.

[0003] At present, the processing method of S-shaped needles usually adopts flat stamping. The processing quality of this processing method is relatively stable, but the convenience of loading and unloading before and after stamping is low. A robot is required to accurately place the needle on the stamping die or take it out from the stamping die. Due to the small size of the needle and the limited operating space in the stamping processing area, the aforementioned loading and unloading method is difficult to quickly complete the placement and removal of the needle, and the processing time is relatively long, which will reduce the efficiency of needle processing. In addition, it is difficult to place and take the needle, which can easily reduce the quality of needle stamping processing. Summary of the invention

[0004] The present invention provides a special processing device for S-bend needles for IGBT modules, so as to solve the problems in the related art of low convenience and high difficulty of loading and unloading materials before and after stamping, low overall processing efficiency and easy reduction in processing quality.

[0005] The present invention provides a special processing equipment for S-bend needles for IGBT modules, the special processing equipment for S-bend needles for IGBT modules comprises a feeding mechanism, the feeding mechanism comprises a moving disk, a static disk coaxially arranged with the moving disk, a feeding assembly installed on the moving disk and used for placing needles, the cap-shaped end and the processing part of the needle on the feeding assembly are in a naked state, a loading station, a stamping station and a unloading station are sequentially arranged along the circumference of the moving disk, and the feeding assembly passes through the above three stations in sequence as the moving disk rotates, the feeding assembly comprises a base elastically mounted with a vertical displacement seat, and a simulated The profiling support head and the elastic clamping head, the elastic clamping head clamps and fixes the straight needle end of the needle piece, the profiling support head provides position-limiting support for the non-processed part of the needle piece, a control component for controlling the opening of the elastic clamping head is installed on the static plate, a stamping mechanism is arranged on the stamping station, the stamping mechanism comprises an upper die, a lower die and a profiling protection head, the profiling protection head is installed on the upper die and moves with the upper die, after the discharge component enters the punch station, the upper die moves downward, and before the upper die and the lower die are closed, the profiling protection head cooperates with the profiling support head to hold the non-processed part of the needle piece and causes the vertical shift seat to move downward accordingly until the die is closed and formed.

[0006] In one possible implementation, the elastic clamping head includes symmetrically arranged contour clamping blocks, elastic parts are connected between the contour clamping blocks, a limit block is installed on the contour clamping block, and the control component includes a sliding seat provided with a push head, the sliding seat corresponds one-to-one to the loading station and the unloading station respectively, and the push head on the sliding seat corresponds one-to-one to the limit block on the symmetrical contour clamping block.

[0007] In one possible implementation, both the loading station and the unloading station are provided with a clamping and placing mechanism, the loading station is also provided with a loading mechanism, and the unloading station is also provided with a receiving box, the clamping and placing mechanism on the loading station sends the needle parts from the loading mechanism to the unloading assembly in the loading station, and the clamping and placing mechanism in the unloading station sends the needle parts from the corresponding unloading assembly to the receiving box, wherein the clamping and placing mechanism includes a clamping cylinder equipped with clamping claws, a displacement cylinder controlling the up and down movement of the clamping cylinder, and a KK module controlling the horizontal movement of the displacement cylinder.

[0008] In one possible implementation, the loading mechanism includes a circular vibration disk connected to a discharge track, a feed support connected to a feed block, and a stop block for limiting the position of the needle. The needle automatically identifies the direction in the circular vibration disk and enters the discharge track and enters the feed block through the discharge track. After the needle enters the feed block, it stops moving under the limit of the stop block and waits to be clamped by the corresponding clamping and placing mechanism.

[0009] In one possible implementation, the contoured support head includes a support block having a contoured groove 1, and the contoured protection head includes an adjustment block having a contoured groove 2 and a limiting opening. The contoured groove 2 cooperates with the contoured groove 1 to hold the non-processed part of the needle, and the limiting opening limits the support block.

[0010] In one possible implementation, the upper mold includes an upper mold base and an upper mold core, and the upper mold core is detachably mounted on the upper mold base. The lower mold includes a lower mold base and a lower mold core, and the lower mold core is detachably mounted on the lower mold base.

[0011] In a possible implementation, a second limiting block is provided between the symmetrical contour clamping blocks, and the concentricity of the contour clamping block and the contour support head in a clamped state is made consistent through the limiting of the second limiting block.

[0012] In a possible implementation, the first limiting block is a wheel-shaped structure and is rotatably mounted on the contoured clamping block.

[0013] In a possible implementation, an arc-shaped protective head is installed on the lower die, and during the stamping process, the cap-shaped end of the needle is located in the arc-shaped protective head.

[0014] The above one or more technical solutions in the embodiments of the present invention have at least the following technical effects: According to an embodiment of the present invention, a special processing equipment for S-bent needles for IGBT modules is provided. The feeding mechanism allows the needle to enter the stamping station with the cap-shaped end and the processed part fully exposed, and separates the loading and unloading processes before and after stamping from the stamping process, so as to fully utilize the time of the stamping process to complete the loading and unloading. After the needle enters the stamping station, it is in a state of waiting for stamping, which is convenient for completing the stamping process quickly. The feeding mechanism fixes the needle by combining an elastic clamping head with a contoured support head, and a control component is arranged on the static disk to control the opening of the elastic clamping head, so as to fully simplify the component structure on the dynamic disk, reduce the complexity of the overall mechanical structure, and improve the stability of the overall mechanical structure in continuous operation. In combination with the stamping process, the contoured protection head and the contoured support head cooperate to hold the non-processed part of the needle to prevent the needle from unexpected deformation, so as to effectively improve the efficiency and quality of the stamping process and the stability of continuous processing as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure before and after needle processing.

[0016] Figure 2 It is a schematic diagram of the overall structure of a special S-bending needle processing equipment for IGBT modules provided by an embodiment of the present invention.

[0017] Figure 3 It is a partial structural schematic diagram of a special S-bending needle processing equipment for IGBT modules provided by an embodiment of the present invention.

[0018] Figure 4 yes Figure 2 Enlarged view of point A in the middle.

[0019] Figure 5 It is a structural schematic diagram of a moving plate and a stationary plate of a special S-bending needle processing equipment for an IGBT module provided by an embodiment of the present invention.

[0020] Figure 6 It is an exploded view of a material discharge component of a special S-bending needle processing equipment for an IGBT module provided by an embodiment of the present invention.

[0021] Figure 7 It is a structural schematic diagram of a stamping mechanism of a special S-bend needle processing equipment for an IGBT module provided by an embodiment of the present invention.

[0022] Figure 8 It is a structural schematic diagram of an upper mold and a lower mold of a special S-bending needle processing equipment for an IGBT module provided by an embodiment of the present invention.

[0023] Fig. 9 It is a structural schematic diagram of a profiling protection head and a profiling support head of a special S-bending needle processing equipment for an IGBT module provided by an embodiment of the present invention.

[0024] Fig.10 It is an exploded view of a clamping and placing mechanism and a feeding mechanism of a special S-bending needle processing equipment for an IGBT module provided by an embodiment of the present invention.

[0025] In the figure: 1. feeding mechanism; 101. moving plate; 102. static plate; 103. material discharge assembly; 113. vertical shift seat; 123. base; 133. profiling support head; 1331. profiling groove 1; 1332. support block; 143. elastic clamping head; 1431. profiling clamping block; 1432. elastic member; 1433. limit block 1; 1434. limit block 2; 104. control assembly; 114. push head; 124. sliding seat; 2. stamping mechanism; 21. upper mold; 211. upper Die base; 212, upper die core; 22, lower die; 221, lower die base; 222, lower die core; 23, contour protection head; 231, contour groove 2; 232, limit opening; 233, adjustment block; 24, arc-shaped protection head; 3, clamping and placing mechanism; 31, clamping claw; 32, clamping cylinder; 33, displacement cylinder; 34, KK module; 4, feeding mechanism; 41, discharge track; 42, circular vibration plate; 43, feed block; 44, feed support; 45, stop block; 5, receiving box; 6, frame. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] See also Figure 1 , Figure 2 , Figure 3 and Figure 5A special processing equipment for S-bend needles for IGBT modules, comprising a feeding mechanism 1, a stamping mechanism 2 and a frame 6, wherein the feeding mechanism 1 comprises a moving disc 101, a static disc 102 arranged concentrically with the moving disc 101 and a plurality of discharge assemblies 103 for placing needles, wherein the discharge assemblies 103 are evenly distributed along the circumference of the moving disc 101, the static disc 102 is located inside the discharge assemblies 103 and is fixedly mounted on the frame 6, the moving disc 101 is an annular structure and is rotatably mounted on the frame 6, when the needle is placed on the discharge assemblies 103, its cap-shaped end and the processed part are in a naked state, and a loading station, a stamping station and a unloading station are sequentially arranged along the circumference of the moving disc 101, and the discharge assemblies 103 first pass through the loading station to pick up materials as the moving disc 101 rotates, and then pass through the stamping station to pick up materials, and then pass through the stamping station to pick up materials. The pressing station carries out stamping and forming processing, and finally the material is unloaded at the unloading station and then the above-mentioned processing steps are repeated in a cycle to continuously carry out the forming processing of the needle part, and when any group of the unloading components 103 is located at the stamping station, the corresponding unloading components 103 are parked at the loading station and the unloading station, and during the stamping process, the loading and unloading work is completed at the same time, and the loading and unloading processes before and after stamping are separated from the stamping process, thereby increasing the operating space, facilitating loading and unloading and stamping processing, and when the needle part enters the stamping station, it is in a state of waiting for stamping processing, and can be directly stamped, and during the stamping process, the non-stamping part of the needle part will be fixed and protected to prevent the needle part from unexpected deformation, thereby effectively improving the efficiency of the stamping processing as a whole and ensuring the processing quality.

[0028] See Figure Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The material discharging assembly 103 includes a base 123 on which a vertical displacement seat 113 is elastically mounted. The base 123 is fixedly mounted on the movable plate 101. A contour support head 133 and an elastic clamping head 143 are mounted on the vertical displacement seat 113. The contour support head 133 is located on the outer side of the elastic clamping head 143. Figure 4As shown, the elastic clamping head 143 clamps and fixes the straight needle end of the needle piece, and the contoured support head 133 supports the non-processed part of the needle piece, so that the cap-shaped end and the processed part of the needle piece are completely exposed, and directly enter the state of waiting for stamping when entering the stamping station. After the processing is completed, it is directly moved out of the stamping station with the rotation of the moving disk 101, which effectively improves the convenience of taking and placing materials before and after stamping and reduces the difficulty of the overall processing, which is correspondingly beneficial to improving the efficiency and quality of the stamping processing. The static disk 102 is equipped with a control elastic clamping head 143. The control component 104 is opened. When the discharge component 103 is located at the loading station or the unloading station, the control component 104 on the static plate 102 controls the elastic clamping head 143 to open, and the needle is placed or removed accordingly, which fully simplifies the structure of the components on the moving plate 101, so that the discharge component 103 on the moving plate 101 does not need to be directly connected to the outside, and the moving plate 101 can rotate in the same direction continuously and stably, which effectively reduces the complexity of the overall mechanical structure and correspondingly improves the stability of the overall mechanical structure.

[0029] See also Figure 2 , Figure 7 , Figure 8 and Fig. 9 The punching mechanism 2 includes an upper die 21, a lower die 22 and a profiling protection head 23. The lower die 22 is fixedly mounted on the frame 6, the upper die 21 is vertically slidably mounted on the frame 6, and the profiling protection head 23 is fixedly mounted on the upper die 21. After the discharge assembly 103 enters the punch station, the upper die 21 is directly pressed down to make it close with the lower die 22 to complete the punching process of the needle. Among them, the profiling protection head 23 cooperates with the profiling support head 133 to hold the non-processing part of the needle before the upper die 21 and the lower die 22 are closed. The vertical displacement seat 113 is moved downward until the mold is closed and formed. The contour protection head 23 and the contour support head 133 cooperate to hold the non-processed part of the needle part, effectively avoiding the unexpected deformation of the needle part during the stamping process, thereby improving the stamping efficiency and the quality of the needle part processing. Among them, when the contour protection head 23 and the contour support head 133 cooperate to hold the non-processed part of the needle part, a certain gap is left between the two, which can be freely extended and retracted when the needle part is formed, ensuring that the concentricity of the needle part remains unchanged during molding, and stress release can be obtained.

[0030] See also Figure 7 , Figure 8 and Fig. 9 An arc-shaped protective head 24 is fixedly installed on the lower mold 22. The arc-shaped protective head 24 is a connecting block with an arc-shaped groove. The connecting block is fixedly connected to the lower mold 22. During the stamping process, the cap-shaped end of the needle part is located in the arc-shaped groove. The cap-shaped end of the needle part is supported and limited by the arc-shaped groove, which can effectively reduce the unexpected deformation of the needle part during the stamping process to a certain extent, thereby helping to improve the quality of the stamping process.

[0031] See Figure Figure 6 , Figure 7 and Figure 8 The profiling support head 133 includes a support block 1332 with a profiling groove 1331 on the top surface, and the support block 1332 is fixedly installed on the vertical displacement seat 113. The profiling protection head 23 includes an adjustment block 233 with a profiling groove 231 and a limiting opening 232. The adjustment block 233 is fixedly installed on the upper mold 21. The profiling groove 231 cooperates with the profiling groove 1 1331 to hold the non-processed part of the needle piece, and the support block 1332 is inserted in the limiting opening 232, so that the profiling support head 133 and the profiling protection head 23 are stably connected together during the stamping process.

[0032] See also Figure 6 and Figure 7 The upper mold 21 includes an upper mold base 211 and an upper mold core 212, and the upper mold core 212 can be detachably installed on the upper mold base 211. The lower mold 22 includes a lower mold base 221 and a lower mold core 222, and the lower mold core 222 can be detachably installed on the lower mold base 221. When it is necessary to process Z-type needles and C-type needles, it is only necessary to replace the upper mold core 212 and the lower mold core 222.

[0033] See Figure Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The elastic clamping head 143 includes symmetrically arranged profiling clamping blocks 1431, and elastic members 1432 are connected between the symmetrical profiling clamping blocks 1431. Under the action of the elastic members 1432, the symmetrical profiling clamping blocks 1431 clamp and fix the needle member. A limit block 1433 is installed on the top of the profiling clamping block 1431. The control component 104 includes a sliding seat 124 provided with a pusher head 114. The sliding seat 124 corresponds to the loading station and the unloading station one by one and is slidably installed on the static plate 102. The pusher head 114 on the sliding seat 124 corresponds to the limit block 1433 on the symmetrical profiling clamping block 1431 one by one. Figure 5 As shown, the sliding seat 124 slides toward the discharge assembly 103 on the corresponding workstation, and the corresponding limit block 1433 can be limited by the push head 114, so that the symmetrical contour clamping block 1431 can be opened, wherein the limit block 1433 is a wheel-shaped structure and is rotatably installed on the contour clamping block 1431, thereby reducing the friction force generated in the process of the push head 114 limiting the limit block 1433, and facilitating the control of the opening of the symmetrical contour clamping block 1431.

[0034] See Figure Figure 6 and Figure 7A second limiting block 1434 is provided between the symmetrical contour clamping blocks 1431. By limiting the limiting block 1434, the concentricity of the contour clamping block 1431 in the clamping state is consistent with that of the contour support head 133, thereby improving the accuracy of the needle placement position.

[0035] See also Figure 2 , Figure 3 , Figure 4 and Fig.10 , a clamping and placing mechanism 3 is provided on both the loading station and the unloading station, a loading mechanism 4 is also provided on the loading station, and a receiving box 5 is also provided on the unloading station. The clamping and placing mechanism 3 on the loading station sends the needle parts from the loading mechanism 4 to the unloading assembly 103 in the loading station, and the clamping and placing mechanism 3 in the unloading station sends the needle parts from the corresponding unloading assembly 103 to the receiving box 5, wherein the clamping and placing mechanism 3 includes a clamping cylinder 32 equipped with a clamping claw 31, a displacement cylinder 33 for controlling the up and down movement of the clamping cylinder 32, and a KK module 34 for controlling the horizontal movement of the displacement cylinder 33. The KK module 34 is a prior art for accurately controlling the linear motion of the displacement cylinder 33. The KK module 34 is installed on the frame 6, and the clamping and placing mechanism on the loading station 3 as an example, the clamping cylinder 32 controls the clamping claw 31 to clamp the needle member on the feeding mechanism 4, and then the displacement cylinder 33 controls the clamping cylinder 32 to move up to the preset position, so that the needle member on the clamping claw 31 is separated from the feeding mechanism 4, and then the KK module 34 controls the displacement cylinder 33 to move to the preset discharge position of the discharge component 103, and then the displacement cylinder 33 controls the clamping cylinder 32 to move down to the preset position. At this time, the corresponding non-processed part of the needle member is located in the profiling groove 1331 in the corresponding profiling support head 133, and the straight needle end of the needle member is located in the clamping area of ​​the corresponding elastic clamping head 143. Then the elastic clamping head 143 clamps the needle member. At this time, the needle member is in a stable placement state. Finally, the clamping cylinder 32 controls the clamping claw 31 to release and reset to perform the next feeding process.

[0036] See also Figure 2 and Fig.10 The feeding mechanism 4 includes a circular vibration disk 42 connected to a discharge track 41, a feed support 44 fixedly connected to a feed block 43, and a stop block 45 for limiting the position of the needle. The circular vibration disk 42 is mounted on the frame 6, and the feed support 44 is fixedly mounted on the frame 6. The needle automatically identifies the direction in the circular vibration disk 42 and enters the discharge track 41. After coming out of the discharge track 41, it directly enters the feed block 43 and stops moving under the obstruction of the stop block 45. At this time, the clamp 31 can clamp the needle.

[0037] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A special processing equipment for S-bend needles for IGBT modules, characterized by: The feeding mechanism includes a moving plate, a stationary plate coaxially arranged with the moving plate, and a feeding assembly installed on the moving plate and used for placing needles. The cap-shaped end and the processed part of the needles on the feeding assembly are in a naked state. A loading station, a stamping station and a unloading station are sequentially arranged along the circumference of the moving plate. With the rotation of the moving plate, the feeding assembly passes through the aforementioned three stations in sequence. After the feeding assembly enters the stamping station, the needles are in a state to be stamped. The material discharge assembly comprises a base on which a vertical displacement seat is elastically mounted, a contour support head and an elastic clamping head are mounted on the vertical displacement seat, the elastic clamping head clamps and fixes the straight needle end of the needle piece, and the contour support head provides position-limiting support for the non-processed part of the needle piece; A stamping mechanism is arranged on the stamping station, and the stamping mechanism comprises an upper die, a lower die and a profiling protective head. The profiling protective head is installed on the upper die and moves with the upper die. After the discharge assembly enters the punch station, the upper die moves downward, and the profiling protective head cooperates with the profiling supporting head to hold the non-processed part of the needle part before the upper die and the lower die are closed, and the vertical displacement seat moves downward accordingly until the closing and forming.

2. The S-bend needle processing equipment for IGBT module according to claim 1 is characterized in that: The elastic clamping head includes symmetrically arranged contour clamping blocks, elastic parts are connected between the contour clamping blocks, a limit block is installed on the contour clamping block, and the control component includes a sliding seat with a push head, the sliding seat corresponds one-to-one to the loading station and the unloading station respectively, and the push head on the sliding seat corresponds one-to-one to the limit block on the symmetrical contour clamping block.

3. The S-bend needle processing equipment for IGBT module according to claim 1, characterized in that: The loading station and the unloading station are both provided with a clamping and placing mechanism. The loading station is also provided with a loading mechanism, and the unloading station is also provided with a receiving box. The clamping and placing mechanism on the loading station sends the needle parts from the loading mechanism to the unloading assembly in the loading station, and the clamping and placing mechanism in the unloading station sends the needle parts from the corresponding unloading assembly to the receiving box, wherein the clamping and placing mechanism includes a clamping cylinder equipped with clamping claws, a displacement cylinder controlling the up and down movement of the clamping cylinder, and a KK module controlling the horizontal movement of the displacement cylinder.

4. The S-bend needle processing equipment for IGBT module according to claim 3 is characterized in that: The feeding mechanism includes a circular vibration disk connected to a discharge track, a feed support connected to a feed block, and a stop block for limiting the position of the needle. The needle automatically identifies the direction in the circular vibration disk and enters the discharge track and enters the feed block through the discharge track. After entering the feed block, the needle stops moving under the limit of the stop block and waits to be clamped by the corresponding clamping and placing mechanism.

5. The S-bend needle processing equipment for IGBT module according to claim 1, characterized in that: The profiling support head includes a support block with a profiling groove 1, and the profiling protection head includes an adjustment block with a profiling groove 2 and a limiting opening. The profiling groove 2 cooperates with the profiling groove 1 to hold the non-processed part of the needle piece, and the limiting opening limits the support block.

6. The S-bend needle processing equipment for IGBT module according to claim 1, characterized in that: The upper mold comprises an upper mold base and an upper mold core, wherein the upper mold core is detachably mounted on the upper mold base, and the lower mold comprises a lower mold base and a lower mold core, wherein the lower mold core is detachably mounted on the lower mold base.

7. The S-bend needle processing equipment for IGBT module according to claim 2, characterized in that: A second limiting block is arranged between the symmetrical contour clamping blocks, and the concentricity of the contour clamping blocks and the contour support head in the clamping state is made consistent through the limiting of the second limiting block.

8. The S-bend needle processing equipment for IGBT module according to claim 2, characterized in that: The first limiting block is a wheel-shaped structure and is rotatably mounted on the contoured clamping block.

9. The S-bend needle processing equipment for IGBT module according to any one of claims 1, 2, 7 and 8, characterized in that: The lower die is provided with an arc-shaped protective head, and during the stamping process, the cap-shaped end of the needle piece is located in the arc-shaped protective head.

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