An integrated equipment for assembling and bending electrode screws for IGBT modules

Abstract

This invention relates to the technical field of semiconductor packaging, and more particularly to an integrated device for assembling and bending electrode screws of an IGBT module. The device includes a module body, a bending mechanism, a transfer mechanism, and a nut feeding module. The module body has several mounting holes, and terminals are arranged vertically and perpendicularly to each other on one side of each mounting hole. The transfer mechanism passes through the bending mechanism and extends to the nut feeding module. The bending mechanism includes several rolling rollers and a reciprocating mechanism. The rolling direction of the rolling rollers is adapted to the orientation of the terminals on the module body. The reciprocating mechanism drives the rolling rollers to move perpendicular to the transfer direction of the transfer mechanism. Each rolling roller includes a mounting plate, and a lifting mechanism is provided on the top of the mounting plate. A fixed roller and a movable roller are provided on the bottom of the mounting plate. This invention achieves bending and forming of vertical terminals in multiple directions with a high degree of automation.

Description

Technical Field

[0001] This invention relates to the technical field of semiconductor packaging, and more particularly to an integrated device for assembling and bending electrode screws for IGBT modules. Background Technology

[0002] IGBT module housings are typically formed by injection molding. After injection molding, nuts need to be installed on the IGBT module housing. Then, the terminals on the housing are bent, and wiring bolts are passed through the terminals and connected to the nuts to achieve electrical connection between the device and the terminals.

[0003] The existing patent publication number CN118448950A discloses an integrated device for bending and assembling IGBT module housing terminals, including a support unit, a nut feeding unit and a bending unit. The bending unit has a primary bending mechanism that can change the terminals on the IGBT module housing from a horizontal state to an inclined state, and a secondary bending mechanism that changes the inclined terminals from an inclined state to a horizontal state. After bending, the horizontal terminals cover the top of the slots on the IGBT module housing.

[0004] In the above technical solution, the bending of the terminal in a vertical state is achieved through the cooperation of the primary bending mechanism and the secondary bending mechanism. In this technology, the bending direction of several terminals is the same. However, currently, based on factors such as product function, electrical performance and application scenarios, multiple terminals on the module adopt a vertically staggered bending direction design, and the mutually perpendicular terminals are all set adjacent to each other. When bending in different directions, interference is likely to occur, which will lead to terminal damage, greatly increase the bending difficulty, and reduce the product production success rate and production efficiency.

[0005] Therefore, it is necessary to provide an integrated device for assembling and bending electrode screws of IGBT modules to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated equipment for assembling and bending electrode screws of IGBT modules, which realizes bending and forming of vertical terminals in multiple directions with a high degree of automation.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an integrated device for assembling and bending electrode screws of IGBT modules, comprising a module body, a bending mechanism, a transfer mechanism and a nut feeding module;

[0008] The module body is provided with a number of mounting holes, and a terminal is provided on one side of the mounting hole, which is vertical and oriented perpendicularly to each other.

[0009] The transplanting mechanism passes through the bending mechanism and extends to the nut feeding module;

[0010] The bending mechanism includes several sets of rolling rollers and a reciprocating mechanism, and the rolling direction of the several sets of rolling rollers is adapted to the orientation of the terminals on the module body;

[0011] The reciprocating mechanism is used to drive several sets of rolling wheels to move in a direction perpendicular to the transplanting direction of the transplanting mechanism.

[0012] As a preferred embodiment of the present invention, the rolling roller assembly includes a mounting plate, and a lifting mechanism is provided on the top of the mounting plate;

[0013] The bottom of the mounting plate is provided with a fixed roller 1 and a movable roller 2;

[0014] The first roller is located at one end near the nut feeding module, and the axis of the first roller is perpendicular to the transplanting direction of the transplanting mechanism.

[0015] The axis of the second roller is parallel to the transplanting direction of the transplanting mechanism, and the reciprocating mechanism drives the second roller to move and roll independently.

[0016] A compaction block is provided at the bottom end of the mounting plate away from the roller.

[0017] In a preferred embodiment of the present invention, the lifting mechanism includes a fixed plate, the bottom of which is connected to the mounting plate;

[0018] The fixed plate is provided with guide sleeves on its four sides. The inner side of the guide sleeve is fitted with and slidably fitted with a guide post. The outer side of the guide post is fitted with and fixedly connected with a limit sleeve. The limit sleeve is used to limit the minimum height position of the rolling roller assembly.

[0019] The bottom surface of the compacted block is lower than roller one and roller two.

[0020] The top of the guide post is provided with a top plate, and the top plate is provided with a drive component for driving the fixed plate to rise and fall.

[0021] As a preferred embodiment of the present invention, a wheel frame is provided on the top of the second roller, and sliding wing plates extend from both ends of the wheel frame. A guide frame is fixedly connected to the bottom of the mounting plate, and the sliding wing plates are engaged with the guide frame and slide along it.

[0022] As a preferred embodiment of the present invention, the reciprocating mechanism includes a V-shaped rod, a hinge rod is provided at the central bend of the V-shaped rod, one end of the V-shaped rod is downward and hinged to the sliding wing plate, both the mounting plate and the fixing plate are provided with through openings, the top end of the V-shaped rod passes through the mounting plate and extends to the upper side of the fixing plate, and the hinge rod is hinged to the inner wall of the through opening of the fixing plate.

[0023] The top of the V-shaped rod is equipped with a pressure-applying mechanism.

[0024] As a preferred embodiment of the present invention, the bottom of the V-shaped rod is provided with a movable hinge end, one end of which is fixedly connected to an extension rod, and the bottom of the V-shaped rod is provided with a countersunk groove, the extension rod being inserted into the countersunk groove and slidingly engaged therewith.

[0025] In a preferred embodiment of the present invention, the pressure applying mechanism includes a pressure plate, the bottom of which corresponds to the top of the V-shaped rod;

[0026] The top of the pressure plate is connected to the driving end of the driving component;

[0027] A lifting plate is fixedly connected to the top of the guide sleeve, and a through opening is provided through the center of the lifting plate. The pressure plate is adapted to the through opening.

[0028] The pressure plate is used to drive the lifting plate to rise and fall or to drive the V-shaped rod to swing through the passage.

[0029] In a preferred embodiment of the present invention, a limiting plate is fixed to the bottom of the pressure plate, and the outer edge dimension of the limiting plate is larger than that of the pressure plate;

[0030] The bottom of the limiting plate has several storage holes, each containing a connecting post and a return spring. The bottom of the return spring is connected to the fixing plate.

[0031] As a preferred embodiment of the present invention, an openable and closable locking mechanism is provided between the pressure plate and the fixing plate.

[0032] As a preferred embodiment of the present invention, the transplanting mechanism includes a tooling base and a linear drive mechanism, and a carrier stop bar is provided at the starting end of the transplanting mechanism;

[0033] The tooling base includes a limiting cavity. A plurality of split blocks are fixedly connected to one side of the limiting cavity. The split blocks are located near the carrier stop bar. A long-side push head is provided at the opposite end of the split blocks. An extension block is fixedly connected to the bottom of the long-side push head. The extension block faces the carrier stop bar and extends to the outside of the tooling base. A spring is provided at one end of the long-side push head.

[0034] A short pusher is provided on one side of the limiting cavity, and a hook plate is provided at the bottom of the short pusher. The hook plate extends to the outside of the tooling seat, and a movable opening hook is provided at one end of the hook plate.

[0035] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention sets up a transfer mechanism to simultaneously realize the station transfer of the module body and the bending drive of the single-sided terminal, eliminating the need to set up an additional bending power mechanism with horizontal single axial displacement, reducing the setting of additional equipment, realizing the integrated function of nut feeding and bidirectional terminal bending, and improving production efficiency. Attached Figure Description

[0036] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0037] In the attached diagram:

[0038] Figure 1 This is a schematic diagram of the overall structure of the screw assembly and bending integrated device of the present invention;

[0039] Figure 2 This is a three-dimensional schematic diagram of the tooling base and module body of the present invention;

[0040] Figure 3 This is a three-dimensional schematic diagram of the bending mechanism of the present invention;

[0041] Figure 4 This is a three-dimensional schematic diagram of the bottom of the rolling roller assembly of the present invention;

[0042] Figure 5 This is a three-dimensional schematic diagram of the V-shaped rod of the present invention;

[0043] Figure 6 This is a partial cross-sectional schematic diagram of the lifting plate of the present invention;

[0044] Figure 7 This is a three-dimensional schematic diagram of the bottom of the limiting plate of the present invention;

[0045] Figure 8 This is a cross-sectional schematic diagram of the rolling roller assembly of the present invention;

[0046] Figure 9 This is a three-dimensional schematic diagram of the transplanting mechanism and nut feeding module of the present invention;

[0047] Figure 10 This is a schematic diagram of the internal structure of the tooling base of the present invention;

[0048] Figure 11 yes Figure 1 A magnified view of a portion of region A;

[0049] In the diagram: 1. Bending mechanism; 101. Roller 1; 102. Roller 2; 103. Mounting plate; 104. Guide frame; 105. Sliding wing plate; 106. V-shaped rod; 107. Hinge end; 108. Extension rod; 109. Limiting plate; 110. Storage hole; 111. Pressure plate;

[0050] 2. Transplanting mechanism; 201. Vehicle guardrail;

[0051] 3. Tooling base; 301. Limiting cavity; 302. Split stop block; 303. Long side push head; 304. Extension block; 305. Short side push head; 306. Hook plate; 307. Opening hook;

[0052] 4. Nut feeding module; 401. Three-axis material handling mechanism; 402. Vision component; 403. Nut feeder; 404. Linear drive module;

[0053] 5. Fixing plate; 501. Guide sleeve; 502. Guide post; 503. Top plate; 504. Limiting sleeve; 505. Lifting plate;

[0054] 6. Module body; 601. Terminal;

[0055] 7. Return spring;

[0056] 8. Compacted blocks. Detailed Implementation

[0057] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0058] Please see Figure 1-11 The present invention provides a technical solution: an integrated device for assembling and bending electrode screws of IGBT modules, comprising a module body 6, a bending mechanism 1, a transfer mechanism 2 and a nut feeding module 4;

[0059] The module body 6 is provided with several mounting holes, and a terminal 601 is provided on one side of the mounting hole, which is vertical and oriented perpendicularly to each other;

[0060] The transplanting mechanism 2 passes through the bending mechanism 1 and extends to the nut feeding module 4;

[0061] The bending mechanism 1 includes several rolling roller sets and a reciprocating mechanism. The rolling direction of the several rolling roller sets is adapted to the orientation of the terminals 601 on the module body 6.

[0062] The reciprocating mechanism is used to drive several sets of rolling rollers to move in a direction perpendicular to the transplanting direction of the transplanting mechanism 2.

[0063] Specifically, firstly, the transfer mechanism 2 drives the module body 6 to pass under the bending mechanism 1, moving it to the nut feeding module 4, thereby automatically inserting the nut into the mounting hole; then, the transfer mechanism 2 drives the module body 6 to return to the bending mechanism 1, while the rolling rollers of the bending mechanism 1 descend to the bending height and remain fixed, until the rolling rollers contact the terminal 601 facing the nut feeding module 4 (e.g., ...). Figure 2 The terminal 601 located in the middle position (as shown) can be rolled and bent in that direction; then the module body 6 moves to the lower side of the bending mechanism 1 for positioning, and then the rolling roller group is driven by the reciprocating mechanism to move back and forth along the direction perpendicular to the transplanting direction to roll and bend the terminal 601 in another vertical direction (such as...). Figure 2 The terminals 601 shown at both ends are used to perform bending operations on adjacent and vertically staggered terminals 601.

[0064] In this embodiment, by utilizing the vertical displacement of the transplanting mechanism 2 and the reciprocating mechanism, adjacent and vertically oriented terminals 601 are processed in batches. The process design is reasonable, and there is no interference between the bending structure and the adjacent and vertical terminals 601, thereby avoiding deformation of the terminals 601 or damage to the plating.

[0065] Furthermore, the transplanting mechanism 2 is set up to simultaneously realize the station transfer of the module body 6 and the bending drive of the single-sided terminal 601, eliminating the need to set up an additional bending power mechanism with horizontal single axial displacement, reducing the setting of additional equipment, realizing the integrated function of nut feeding and bidirectional terminal bending, and improving production efficiency.

[0066] Preferably, in this embodiment, at least two sets of bending mechanism 1 and transplanting mechanism 2 are provided to operate simultaneously. A nut feeder 403 is provided between the two sets of transplanting mechanisms 2. The nut loading module 4 includes a three-axis material handling mechanism 401, and a vision component 402 is provided on one side of it. The three-axis material handling mechanism 401 is driven to move between the two sets of transplanting mechanisms 2 and the nut feeder 403 to load and unload nuts through a linear drive module 404.

[0067] It can process two sets of module bodies 6 simultaneously, with feeding and bending seamlessly integrated. While one set of module bodies 6 is being fed, the other set can be bent simultaneously, resulting in a compact overall process and smoother process connections, further improving production efficiency. Furthermore, by placing the nut feeder 403 in the middle of the two transfer mechanisms 2, the reciprocating stroke of the three-axis material handling mechanism 401 is minimized, avoiding long-distance displacement and improving feeding efficiency. It should be noted that the three-axis material handling mechanism 401, the nut feeder 403, and the vision component 402 are all existing technologies in the industrial field, so they will not be described in detail here.

[0068] Based on the above embodiments, the rolling roller assembly includes a mounting plate 103, and a lifting mechanism is provided on the top of the mounting plate 103;

[0069] The bottom of the mounting plate 103 is provided with a fixed roller 101 and a movable roller 102;

[0070] Roller 101 is located at one end near the nut feeding module 4, and the axis of roller 101 is perpendicular to the transplanting direction of the transplanting mechanism 2.

[0071] The axis of roller 102 is parallel to the transplanting direction of transplanting mechanism 2, and the reciprocating mechanism drives roller 102 to move and roll independently;

[0072] A compaction block 8 is provided at the bottom of the mounting plate 103, away from the roller 101.

[0073] Specifically, when the module body 6 returns after completing the nut loading, the lifting mechanism drives the mounting plate 103 to descend, causing the rolling roller set to reach the preset bending height. At this time, roller 101 and roller 202 are at the same horizontal position, and roller 202 is at the initial position, so it will not collide or interfere with the terminal 601. When the module body 6 moves back, it first contacts roller 101 to complete the terminal bending in the first direction. Then, the module body 6 continues to move back to the side of roller 202. The reciprocating mechanism drives roller 202 to move horizontally from the initial position to the terminal 601 to complete the bending. Then, the module body 6 moves along the return direction to the bottom of the compaction block 8, so that the compaction block 8 can further compact and fix the bent terminal 601.

[0074] In this embodiment, bending is performed step by step by several rollers, and then uniformly pressed and calibrated by the compaction block 8 to avoid terminal warping caused by a single bending, ensure that the terminal tightly covers the mounting hole, and guarantee the consistency of bending quality of several terminals 601.

[0075] Furthermore, by utilizing the return displacement of the module body 6, the bending of roller 1 101, the horizontal displacement bending of roller 2 102, and the stable compaction of compaction block 8 can be achieved sequentially, and finally the material is returned to the initial position for unloading. The structural distribution design is reasonable, and there is no need to waste extra stroke for workstation switching, thus improving work efficiency.

[0076] Preferably, the reciprocating mechanism uses a miniature servo electric cylinder to drive the roller 102 to reciprocate in the horizontal direction.

[0077] Preferably, both roller 101 and roller 102 are made of high-hardness alloy, with the wheel surface hardened, and the wheel width matches the width of terminal 601, which facilitates bending the terminal.

[0078] Based on the above embodiments, the lifting mechanism includes a fixed plate 5, the bottom of which is connected to the mounting plate 103;

[0079] The four sides of the fixed plate 5 are provided with guide sleeves 501. The inner side of the guide sleeve 501 is sleeved and slidably fitted with a guide post 502. The outer side of the guide post 502 is sleeved and fixedly connected with a limit sleeve 504. The limit sleeve 504 is used to limit the lowest height position of the rolling roller assembly.

[0080] The bottom surface of compacted block 8 is lower than roller 101 and roller 202;

[0081] The top of the guide post 502 is provided with a top plate 503, and the top plate 503 is provided with a drive component for driving the fixed plate 5 to rise and fall.

[0082] Specifically, the driving component drives the fixed plate 5 to descend synchronously with the rolling roller group, and the limiting sleeve 504 limits the minimum height of descent, thereby accurately aligning the bending height; after the bending is completed, the driving component drives the fixed plate 5 and the compaction block 8 to rise to the clearance height, so that the module body 6 can move to the underside of the compaction block 8, and then the driving component drives the compaction block 8 to descend, uniformly compacting the terminal 601;

[0083] In this embodiment, the minimum bending height of the rolling roller assembly is limited by the limiting sleeve 504 to prevent damage to the module shell due to excessively low height. The mechanical limiting accurately aligns the height position to ensure the consistency of terminal bending.

[0084] Furthermore, the bottom surface of the compaction block 8 is positioned lower than roller 101 and roller 2102 to prevent the limiting sleeve 504 from restricting the descent height of the compaction block 8, which could lead to incomplete compaction. The compaction block 8 can stably press down on the upper side of several terminals 601 to complete compaction, further ensuring terminal fit and guaranteeing the reliability of electrical connection.

[0085] Preferably, the guide sleeve 501 is a copper alloy self-lubricating guide sleeve, and the guide post 502 is a steel chrome-plated guide post to ensure smooth lifting. The bottom of the guide post 502 is fixedly connected to the frame base, and the top is provided with a top plate 503 to form a stable guide frame and ensure the stability of bending and lifting.

[0086] Preferably, the limiting sleeve 504 is made of nylon PA66 and is fixed to the outside of the guide post 502 by screws. The height can be adjusted according to bending requirements.

[0087] Based on the above embodiment, a wheel frame is provided on the top of the roller 2 102, and sliding wing plates 105 extend from both ends of the wheel frame. A guide frame 104 is fixedly connected to the bottom of the mounting plate 103, and the sliding wing plates 105 are inserted into the guide frame 104 and slide along it.

[0088] In this embodiment, the sliding guide structure of the sliding wing plate 105 and the guide frame 104 restricts the horizontal displacement of the roller 102 along the direction perpendicular to the transplanting direction, further preventing the roller 102 from shifting during the displacement process and ensuring the accuracy and stability of bending.

[0089] Preferably, the sliding wing plate 105 is made of aluminum alloy, symmetrically arranged at both ends of the wheel frame, and has a horizontally extending structure. The horizontal section is the sliding contact surface, and the surface is hardened and polished to improve hardness and reduce sliding friction resistance.

[0090] Preferably, the guide frame 104 is made of Q235 steel and has an L-shaped structure. It is fixed to the bottom of the mounting plate 103 by bolts and is symmetrically arranged on both sides of the roller 102. Limiting blocks are set at both ends to limit the maximum displacement stroke of the roller 102. A grease storage groove is reserved in the L-shaped structure to further ensure smooth sliding.

[0091] Based on the above embodiments, the reciprocating mechanism includes a V-shaped rod 106, a hinge rod is provided at the center bend of the V-shaped rod 106, one end of the V-shaped rod 106 is downward and hinged to the sliding wing plate 105, the mounting plate 103 and the fixing plate 5 are both provided with through openings, the top end of the V-shaped rod 106 passes through the mounting plate 103 and extends to the upper side of the fixing plate 5, and the hinge rod is hinged to the inner wall of the through opening of the fixing plate 5;

[0092] A pressure-applying mechanism is provided at the top of the V-shaped rod 106.

[0093] Specifically, in the initial state, roller 102 is located at one end of guide frame 104. The upper pressure mechanism applies force to the top of V-shaped rod 106, causing V-shaped rod 106 to rotate around the central hinge rod. This rotates the lower end of V-shaped rod 106 and drives the sliding wing plate 105 to move horizontally along guide frame 104, thereby driving roller 102 to engage with the vertical terminal and complete the bending action.

[0094] In this embodiment, the V-shaped rod 106 rotates to drive the roller 102 to move independently, avoiding the reciprocating mechanism from moving the fixed plate 5 and the rolling roller group as a whole, which would cause the overall position to shift after long-term operation and cause deviation with subsequent terminal docking, thus ensuring the bending quality and consistency of mass production.

[0095] Furthermore, by setting a V-shaped rod 106 to drive the roller 102 separately, compared with adding a complete linear drive reciprocating mechanism, the weight borne by the lifting mechanism is reduced and the consumption of driving kinetic energy is reduced.

[0096] Furthermore, a V-shaped rod 106 is used to replace the traditional linear drive reciprocating mechanism, reducing the need for additional components such as motors, guide rails, and lead screws, thus reducing structural complexity and making the overall structure lighter, simpler, and more rationally designed, further reducing costs.

[0097] Preferably, a torsion spring is provided at the hinge of the V-shaped rod 106. After bending is completed, the pressure mechanism rises and resets, and the V-shaped rod 106 rotates in the opposite direction under the reset action of the torsion spring, driving the roller 102 back to the initial position, waiting for the next operation.

[0098] Preferably, the V-shaped rod 106 is made of alloy steel, has an overall V-shaped structure, and a center bending angle of 90 degrees to 120 degrees, with 90 degrees being the preferred angle, to improve transmission efficiency;

[0099] Preferably, the pressure application mechanism includes, but is not limited to, a servo electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0100] Based on the above embodiments, the bottom of the V-shaped rod 106 is provided with a movable hinge end 107, one end of the hinge end 107 is fixedly connected to an extension rod 108, and the bottom of the V-shaped rod 106 is provided with a countersunk groove, the extension rod 108 is inserted into the countersunk groove and slides therewith.

[0101] The top of the V-shaped rod 106 is equipped with a sliding wheel.

[0102] Specifically, a force is applied to the sliding wheel through a pressure mechanism. The sliding wheel reduces the friction between the two by rolling, thereby driving the V-shaped rod 106 to rotate around the central hinge rod. The bottom of the V-shaped rod 106 slides with the extension rod 108 through a countersunk groove, thereby automatically retracting and adapting. At the same time, it drives the hinge end 107 to drive the roller 102 to move.

[0103] In this embodiment, by setting the extension rod 108 to slide with the countersunk groove, the length of the V-shaped rod 106 can be automatically adapted during rotation, avoiding sliding interference caused by hard connection;

[0104] Furthermore, by setting a sliding wheel, the sliding friction between the V-shaped rod 106 and the pressure applying mechanism is converted into rolling friction, which improves transmission efficiency, reduces frictional resistance, and increases service life.

[0105] Preferably, the hinge end 107 is made of alloy steel, one end of which is hinged to the top connecting seat of the sliding wing plate 105 through a hinge pin, and the other end is welded and fixed to the extension rod 108.

[0106] Preferably, the extension rod 108 is made of the same material as the hinge end, has a cylindrical structure, and its surface is hardened and polished. Wear-resistant grease is applied to the outside to improve the smoothness of sliding.

[0107] Preferably, in this embodiment, a pair of symmetrically arranged V-shaped rods 106 and rollers 102 are provided, so as to perform synchronous bending of the terminals 601 symmetrically arranged on the module body 6, without the need to set up an additional reciprocating mechanism for sequential bending, thereby improving bending efficiency.

[0108] Based on the above embodiments, the pressure applying mechanism includes a pressure plate 111, the bottom of which corresponds to the top of the V-shaped rod 106;

[0109] The top of the pressure plate 111 is connected to the driving end of the driving component;

[0110] A lifting plate 505 is fixedly connected to the top of the guide sleeve 501. A through opening is opened through the center of the lifting plate 505, and the pressure plate 111 is adapted to the through opening.

[0111] The pressure plate 111 is used to drive the lifting plate 505 to rise or fall, or to drive the V-shaped rod 106 to swing through the passage.

[0112] Specifically, the pressure plate 111 is driven to descend by the driving component. The pressure plate 111 first drives the lifting plate 505 to lower the entire rolling roller assembly to the preset bending height. The limiting sleeve 504 limits the height, which facilitates the docking of the first roller 101 with the terminal 601 to complete the bending. Then, the module body 6 and the remaining terminal 601 to be bent move to one side of the second roller 102. At this time, the driving component drives the pressure plate 111 to descend alone. The pressure plate 111 passes through the through hole and applies pressure to the top of the V-shaped rod 106, thereby driving the second roller 102 to complete the vertical bending of the terminal.

[0113] In this embodiment, by using a driving component to drive the pressure plate 111, the functions of lifting the entire rolling roller assembly and bending the roller 102 individually are realized respectively. There is no need to set up an additional pressure driving mechanism and control system to drive the V-shaped rod 106, such as a servo electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, which further simplifies the equipment structure.

[0114] Furthermore, there is no additional pressure drive mechanism, which further reduces the load-bearing weight of the lifting mechanism, and the structure is reasonably distributed, avoiding the overall structural bulkiness caused by adding additional drive components in the space of the lifting mechanism.

[0115] Based on the above embodiments, a limiting plate 109 is fixed to the bottom of the pressure plate 111, and the outer edge dimension of the limiting plate 109 is larger than that of the pressure plate 111;

[0116] The bottom of the limiting plate 109 has several storage holes 110, each containing a connecting post and a return spring 7. The bottom of the return spring 7 is connected to the fixing plate 5.

[0117] Specifically, in the initial state, by setting the reset spring 7, the pressure plate 111 is placed inside the passage of the lifting plate 505, and the limiting plate 109 is engaged with the bottom edge of the passage. When the driving component drives the pressure plate 111 to descend, under the elastic support of the reset spring 7, the limiting plate 109 pushes the fixing plate 5 to drive the entire rolling roller assembly to descend until the fixing plate 5 is restricted by the limiting sleeve 504. At this time, the first roller 101 contacts the terminal to complete the first direction bending. Then the driving component continues to press down, the reset spring 7 is forced to compress, the pressure plate 111 disengages from the passage and descends alone, thereby driving the V-shaped rod 106 to swing, driving the second roller 102 to complete the vertical direction terminal bending.

[0118] In this embodiment, the elastic support of the reset spring 7 and the limiting sleeve 504 are set to realize the automatic switching of the pressure plate 111 to the driven object. There is no need to calibrate the segmented stroke and debug the action sequence through the PLC, which improves the equipment debugging efficiency, reduces the control difficulty, and makes the operation simple and convenient.

[0119] Furthermore, by setting the limit plate 109 and the return spring 7, there is no need to set a pressure driving mechanism. The pressure plate 111 can be driven and switched through the mechanical structure, which further reduces the overall weight and improves the structural compactness.

[0120] Preferably, the limiting plate 109 is made of alloy steel and has a square plate structure. The top is fixedly connected to the bottom of the pressure plate 111 by bolts. The outer edge dimension is larger than the inner diameter of the passage of the pressure plate 111 and the lifting plate 505 to ensure stable engagement at the bottom edge of the passage and achieve initial position positioning.

[0121] Preferably, four storage holes 110 are provided symmetrically in a circular pattern at the bottom of the limiting plate 109. These holes are blind holes with a diameter slightly larger than the outer diameter of the reset spring 7, and are used to support and store the reset spring 7.

[0122] Based on the above embodiments, an openable locking mechanism is provided between the pressure plate 111 and the fixing plate 5.

[0123] Specifically, after roller 102 is bent, the driving component drives the pressure plate 111 to rise. At this time, the locking mechanism is used to attract and fix it, so that the pressure plate 111 and the fixing plate 5 are integrated. This causes the compaction block 8 to rise synchronously. After reaching the compaction working height, the driving component drives the integrated structure to fall as a whole, and the compaction block 8 directly completes the terminal compaction operation. Then the locking mechanism is unlocked, and the pressure plate 111 can rise and reset into the passage.

[0124] In this embodiment, the locking mechanism temporarily attaches and fixes the pressure plate 111 and the fixing plate 5, thereby avoiding the need for the pressure plate 111 to rise a short distance separately before returning to the passage after bending in the subsequent terminal compaction process. It also avoids the pressure plate 111 falling first when driving the compaction block 8 to fall, thus avoiding the empty stroke. In other words, it avoids the pressure plate 111 failing to drive the compaction block 8 to rise and fall in time, thus improving the efficiency of the compaction work.

[0125] Preferably, the locking mechanism is an electromagnetic adsorption type, which fixes or releases the pressure plate 111 and the fixing plate 5 by turning the electromagnet on and off, making the operation simple and convenient.

[0126] Based on the above embodiments, the transplanting mechanism 2 includes a tooling base 3 and a linear drive mechanism, and a carrier stop bar 201 is provided at the starting end of the transplanting mechanism 2;

[0127] The tooling base 3 includes a limiting cavity 301. Several split blocks 302 are fixedly connected to one side of the limiting cavity 301. The split blocks 302 are located near the carrier stop bar 201. A long-side push head 303 is provided at the opposite end of the split blocks 302. An extension block 304 is fixedly connected to the bottom of the long-side push head 303. The extension block 304 faces the carrier stop bar 201 and extends to the outside of the tooling base 3. A spring is provided at one end of the long-side push head 303.

[0128] A short-side pusher 305 is provided on one side of the limiting cavity 301. A hook plate 306 is provided at the bottom of the short-side pusher 305. The hook plate 306 extends to the outside of the tooling seat 3. A movable opening hook 307 is provided at one end of the hook plate 306.

[0129] Specifically, in the initial state, the tooling base 3 is at the starting end of the linear drive mechanism, that is, the loading and unloading station of the module body 6. A cylinder assembly with a fixed position is also provided on one side of this station to drive the loading hook 307. At this time, the extension block 304 and the carrier stop 201 abut against each other, so that the long side push head 303 moves away from the split stop 302. The cylinder assembly drives the loading hook 307, pulling the hook plate 306 and the short side push head 305, so that the limiting cavity 301 leaves enough loading space to facilitate the worker to place the module body 6. Then the loading hook 307 resets, and the short side push head 305 clamps and fixes one side of the module body 6 under the reset action of the spring. Then the linear drive mechanism drives the tooling base 3 to move, and the extension block 304 moves away from the carrier stop 201. Under the reset action of the spring, the long side push head 303 cooperates with the split stop 302 to clamp and position the other side of the module body 6.

[0130] In this embodiment, both the long-side pusher 303 and the short-side pusher 305 are equipped with springs to achieve flexible clamping, avoiding scratches or deformation of the outer shell caused by rigid clamping; at the same time, there is no need to manually adjust the clamping distance, which can be applied to modules of different specifications and has good versatility.

[0131] Furthermore, the clamping module body 6 and the tooling base 3 are moved synchronously. The tooling base 3 automatically completes the clamping and positioning of the module during the movement, which improves work efficiency and is highly practical.

[0132] Preferably, the linear drive mechanism is a transmission structure in which a servo motor controls a ball screw, driving the tooling seat 3 to reciprocate along the horizontal guide rail to ensure transplanting accuracy;

[0133] Preferably, the carrier baffle 201 is fixed to the starting end of the transplanting mechanism 2, and has a door-shaped structure with a height that matches the tooling seat 3.

[0134] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection, the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0135] The above provides a detailed description of an integrated electrode screw assembly and bending device for an IGBT module provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An integrated assembly and bending device for electrode screws of an IGBT module, characterized in that, It includes the module body, bending mechanism, transfer mechanism and nut feeding module; The module body is provided with a number of mounting holes, and a terminal is provided on one side of the mounting hole, which is vertical and oriented perpendicularly to each other. The transplanting mechanism passes through the bending mechanism and extends to the nut feeding module; The bending mechanism includes several sets of rolling rollers and a reciprocating mechanism, and the rolling direction of the several sets of rolling rollers is adapted to the orientation of the terminals on the module body; The reciprocating mechanism is used to drive several sets of rolling rollers to move perpendicular to the transplanting direction of the transplanting mechanism; The rolling roller assembly includes a mounting plate, and a lifting mechanism is provided on the top of the mounting plate; The bottom of the mounting plate is provided with a fixed roller 1 and a movable roller 2; The first roller is located at one end near the nut feeding module, and the axis of the first roller is perpendicular to the transplanting direction of the transplanting mechanism. The axis of the second roller is parallel to the transplanting direction of the transplanting mechanism, and the reciprocating mechanism drives the second roller to move and roll independently. A compaction block is provided at the bottom end of the mounting plate away from the roller.

2. The integrated assembly and bending equipment for electrode screws of an IGBT module according to claim 1, characterized in that, The lifting mechanism includes a fixed plate, the bottom of which is connected to the mounting plate; The fixed plate is provided with guide sleeves on its four sides. The inner side of the guide sleeve is fitted with and slidably fitted with a guide post. The outer side of the guide post is fitted with and fixedly connected with a limit sleeve. The limit sleeve is used to limit the minimum height position of the rolling roller assembly. The bottom surface of the compacted block is lower than roller one and roller two. The top of the guide post is provided with a top plate, and the top plate is provided with a drive component for driving the fixed plate to rise and fall.

3. The integrated assembly and bending equipment for electrode screws of an IGBT module according to claim 2, characterized in that, The top of the roller two is provided with a wheel frame, and sliding wing plates extend from both ends of the wheel frame. A guide frame is fixedly connected to the bottom of the mounting plate, and the sliding wing plates are engaged with the guide frame and slide along it.

4. The integrated assembly and bending equipment for electrode screws of an IGBT module according to claim 3, characterized in that, The reciprocating mechanism includes a V-shaped rod, a hinge rod is provided at the central bend of the V-shaped rod, one end of the V-shaped rod is downward and hinged to the sliding wing plate, both the mounting plate and the fixing plate are provided with through openings, the top end of the V-shaped rod passes through the mounting plate and extends to the upper side of the fixing plate, and the hinge rod is hinged to the inner wall of the through opening of the fixing plate. The top of the V-shaped rod is equipped with a pressure-applying mechanism.

5. The integrated assembly and bending equipment for electrode screws of an IGBT module according to claim 4, characterized in that, The bottom of the V-shaped rod is provided with a movable hinge end, one end of which is fixedly connected to an extension rod. The bottom of the V-shaped rod is provided with a countersunk groove, and the extension rod is inserted into the countersunk groove and slides therewith.

6. The integrated assembly and bending equipment for electrode screws of an IGBT module according to claim 4, characterized in that, The pressure-applying mechanism includes a pressure plate, the bottom of which corresponds to the top of the V-shaped rod; The top of the pressure plate is connected to the driving end of the driving component; A lifting plate is fixedly connected to the top of the guide sleeve, and a through opening is provided through the center of the lifting plate. The pressure plate is adapted to the through opening. The pressure plate is used to drive the lifting plate to rise and fall or to drive the V-shaped rod to swing through the passage.

7. The integrated assembly and bending equipment for electrode screws of an IGBT module according to claim 6, characterized in that, A limiting plate is fixed to the bottom of the pressure plate, and the outer edge dimension of the limiting plate is larger than that of the pressure plate. The bottom of the limiting plate has several storage holes, each containing a connecting post and a return spring. The bottom of the return spring is connected to the fixing plate.

8. The integrated assembly and bending equipment for electrode screws of an IGBT module according to claim 6, characterized in that, An openable locking mechanism is provided between the pressure plate and the fixing plate.

9. The integrated assembly and bending equipment for electrode screws of an IGBT module according to claim 1, characterized in that, The transplanting mechanism includes a tooling base and a linear drive mechanism, and a carrier stop bar is provided at the starting end of the transplanting mechanism; The tooling base includes a limiting cavity. A plurality of split blocks are fixedly connected to one side of the limiting cavity. The split blocks are located near the carrier stop bar. A long-side push head is provided at the opposite end of the split blocks. An extension block is fixedly connected to the bottom of the long-side push head. The extension block faces the carrier stop bar and extends to the outside of the tooling base. A spring is provided at one end of the long-side push head. A short pusher is provided on one side of the limiting cavity, and a hook plate is provided at the bottom of the short pusher. The hook plate extends to the outside of the tooling seat, and a movable opening hook is provided at one end of the hook plate.

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