Shearing device for processing heat dissipation copper plate of IGBT (Insulated Gate Bipolar Translator) module

Abstract

The invention discloses a shearing device for processing a heat dissipation copper plate of an IGBT (Insulated Gate Bipolar Translator) module, and relates to the field of heat dissipation processing of power semiconductors, the shearing device comprises a base, a U-shaped frame above the base, a fixing block and a processing mechanism for pressing down and deburring the heat dissipation copper plate, the U-shaped frame is fixed on the upper surface of the base through screws, and the U-shaped frame is fixed on the lower surface of the base through screws; side frame plates are fixed to the two faces of the fixing block through screws, the processing mechanism is composed of an anti-warping assembly, a driving assembly and a trimming assembly, the anti-warping assembly is used for pressing the heat dissipation copper plate, and the driving assembly is used for adjusting the length of the anti-warping assembly; and the trimming assembly is used for trimming the sheared heat dissipation copper plate while moving downwards along with the anti-warping assembly. According to the heat dissipation copper plate pressing device, pressing and holding are automatically conducted, the length of the anti-warping assembly is flexibly adjusted according to the actual size of a heat dissipation copper plate, the anti-warping assembly is made to adapt to heat dissipation copper plates of different specifications, the all-directional pressing and holding effect is ensured, labor intensity is lowered, and production efficiency is improved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of power semiconductor heat dissipation processing, and specifically relates to a shearing device for processing heat dissipation copper plates of IGBT modules. Background Art

[0002] IGBT modules are power semiconductor devices widely used in the power electronics industry. Their main function is to achieve efficient conversion and control of electrical energy. Their performance and reliability largely depend on their heat dissipation design. Among them, during the processing of pin-type heat dissipation substrates, copper plate materials need to be cut into suitable sizes and shapes according to design requirements for subsequent processing. This is the starting step of the entire processing flow, providing suitable raw materials for subsequent processes such as punching and machining.

[0003] A heat dissipation copper plate shearing device described in the prior art includes a copper plate shearing unit and a holding support unit installed on one side of the copper plate shearing unit. A copper plate bracket member supports the plate body to be cut section from below. A driving link member with a copper plate bracket member at one end is installed on a support plate, and one end of a reinforcing rod provided on the driving link member is connected to the telescopic end of a hydraulic cylinder through a shaft hole rod. When the hydraulic cylinder drives the tool holder to press down and shear the copper plate with a shear blade, the free end of the plate body to be cut section warps upward due to the downward pressure. At this time, one end of the driving link member follows the telescopic end of the hydraulic cylinder and moves downward, causing the end with the copper plate bracket member to tilt upward.

[0004] Although the above technology can achieve the purpose of the copper plate bracket member supporting the warped copper plate, eliminating the need for manual support by operators, eliminating potential safety hazards of manual operation, and reducing the operations of operators, when adjusting the length of the bracket, it needs to be adjusted by personnel for support, increasing the labor intensity and greatly reducing the production efficiency. Moreover, the sheared copper plate may produce burrs and rough edges, affecting subsequent processing. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a shearing device for processing heat dissipation copper plates of IGBT modules to solve the technical problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A shearing device for processing heat dissipation copper plates of IGBT modules includes a base, a U-shaped frame above, a fixed block, and a processing mechanism for pressing down and deburring the heat dissipation copper plate. The U-shaped frame is fixed on the upper surface of the base by screws. Side frame plates are fixed on both sides of the fixed block by screws. A tool holder is provided below the fixed block, and a shear blade is installed on the lower surface of the tool holder. A knife receiving groove is opened on the inner bottom wall of the U-shaped frame, and a first lifting groove and a second lifting groove are respectively opened on the inner side walls of the U-shaped frame. The processing mechanism is arranged in the U-shaped frame; The processing mechanism consists of an anti-warping component, a driving component, and a trimming component. The anti-warping component is used to press the heat dissipation copper plate. The driving component is used to adjust the length of the anti-warping component. The trimming component is used to trim the heat dissipation copper plate after shearing while following the downward movement of the anti-warping component.

[0007] Specifically, in this technical solution, the anti-warping component includes lower pressing plates arranged on both sides of the tool retraction groove. The lower surfaces of the two lower pressing plates are both provided with storage grooves. Extension plates are slidably installed in the two storage grooves. Baffles are welded to the end faces of the two extension plates. Side contact plates of the heat dissipation copper plate are welded to the lower surfaces of the two baffles. The side walls of the two lower pressing plates away from the extension plates are connected by a connecting plate. A protective shell and two protective cases are respectively fixed on the upper surfaces of the connecting plate and the two lower pressing plates.

[0008] Specifically, in this technical solution, the end faces of the two lower pressing plates are in contact with the inner side walls of the U-shaped frame. The protective shell is slidably arranged in the first lifting groove. A moving plate is slidably arranged in the second lifting groove. Telescopic rods are symmetrically embedded in the moving plate. The telescopic ends of the two telescopic rods are respectively fixedly connected to the two baffles. A number of rollers are arranged on the lower surfaces of the two lower pressing plates and the extension plates. Electric telescopic cylinders are fixed to the two tops of the U-shaped frame by screws. The telescopic ends of the two electric telescopic cylinders are respectively fixedly connected to the upper surface of the protective shell and the moving plate by screws.

[0009] Specifically, in this technical solution, the driving component includes a driving motor and two driven sprockets. The driving motor is arranged in the protective shell of the anti-warping component. A driving sprocket is fixedly sleeved on the outer wall of the output end of the driving motor. The two driven sprockets are arranged in the two protective cases of the anti-warping component. The driving sprocket is in transmission connection with the two driven sprockets through a transmission chain. Shaft rods are fixedly penetrated through the centers of the two driven sprockets. One ends of the two shaft rods penetrate through the protective cases and are connected to threaded rods through flanges. Threaded sleeves are sleeved on the two threaded rods.

[0010] Specifically, in this technical solution, the driving motor is fixed to the inner wall of the protective shell by screws. The diameter of the driving sprocket is larger than the diameters of the two driven sprockets. The transmission chain respectively penetrates through the shell walls of the protective shell and the two protective cases. Vertical plates are fixedly connected to the end faces of the two threaded sleeves. The two vertical plates are fixed to the upper surfaces of the baffles arranged in the anti-warping component by screws.

[0011] Specifically, in this technical solution, the trimming component includes a mounting plate, a first telescopic plate is embedded at the bottom of the mounting plate, a T-shaped trimming scraper is fixed to the telescopic end of the first telescopic plate by screws, the bottom end of the T-shaped trimming scraper is located above the tool retraction groove, the outer wall of the telescopic end of the first telescopic plate is connected with a second telescopic plate, and the second telescopic plate is located in the second lifting groove.

[0012] Specifically, in this technical solution, both sides of the top end of the T-shaped trimming scraper are magnetically adsorbed and connected to the lower surface of the mounting plate through embedded magnets. The width of the vertical rod end of the T-shaped trimming scraper is smaller than the thickness of the shearing knife. The corner of the T-shaped trimming scraper is on the same horizontal line as the outer wall of the roller. A groove is formed on the lower surface of the moving plate, and a magnet is embedded in the top wall of the groove. The second telescopic plate is adsorbed and connected to the magnet.

[0013] Specifically, in this technical solution, vertical blocks are welded to both sides of the top end of the mounting plate. A top block is arranged between the two vertical blocks. A V-shaped groove is formed in the center of the upper surface of the top block. A brush is bonded to the wall of the V-shaped groove, and the V-shaped groove matches the blade surface of the shearing knife. Sliders are connected to one side of the two vertical blocks away from the top block through connecting rods.

[0014] Specifically, in this technical solution, both sides of the top block are fixed to the vertical blocks by screws. The two ends of the two connecting rods are respectively fixed to the vertical blocks and the sliders. The two sliders are slidably arranged on the electric guide rails. The two electric guide rails are fixed to the bottom of the inner wall of the side frame plate by screws. An inductor is embedded on one side of the mounting plate away from the second lifting groove. The inductor cooperates with a sensing head embedded in the side wall of the tool holder.

[0015] Specifically, in this technical solution, both sides of the two side frame plates are fixed to the two frame walls of the U-shaped frame by screws. A hydraulic cylinder is installed at the center of the top end of the fixed block by screws. The telescopic ends of the hydraulic cylinders penetrate through the fixed blocks and are fixed to the upper surface of the tool holder by screws.

[0016] In summary, the present invention mainly has the following beneficial effects: In this application, two electric telescopic cylinders control the downward movement of the two lower pressing plates by moving the protective shell and the moving plate downward until the rollers are in contact with the upper surface of the heat dissipation copper plate. At the same time, the driving motor works, and the two lead screws are driven to rotate by the transmission structure, controlling the two sleeves to drive the baffle to move. The baffle drives the extension plate to move, so that the abutting plate contacts the side of the heat dissipation copper plate, thereby automatically firmly pressing the heat dissipation copper plate, and flexibly adjusting the length of the anti-warping component according to the actual size of the heat dissipation copper plate to adapt to different specifications of heat dissipation copper plates, ensuring a full-range pressing effect, reducing labor intensity and improving production efficiency. When the moving plate moves downward, when the groove contacts the second telescopic plate, it will push the second telescopic plate to move together. The telescopic end of the first telescopic plate is driven by the second telescopic plate to move downward, so that the T-shaped trimming scraper moves downward synchronously with the lower pressing plate. When the hydraulic cylinder controls the tool holder and the shearing blade to move downward to shear the heat-dissipating copper plate, the position of the shearing blade is accurately sensed through the inductor and the sensing head, and the movement time of the T-shaped trimming scraper is controlled in real time. After the shearing is completed, the electric guide rail controls the movement of the mounting plate through the slider, the connecting rod and the vertical block. The mounting plate drives the T-shaped trimming scraper to move through the first telescopic plate, trims the edge of the sheared copper plate, removes burrs and rough edges, and also drives the top block to move. The brush in the V-shaped groove cleans the cutting edge of the shearing blade, thereby realizing the trimming treatment of the copper plate after shearing, reducing the generation of burrs and rough edges, improving the processing quality of the copper plate, and at the same time reducing the influence of copper chips adhering to the shearing blade on the shearing quality, resulting in an uneven shearing surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the shearing device of the present invention; Figure 2 Cross-sectional view of the present invention; Figure 3 Front view of the present invention; Figure 4 Structural diagram of the processing mechanism of the present invention; Figure 5 of the present invention Figure 4 Bottom view; Figure 6 Structural diagram of the drive assembly of the present invention; Figure 7 Enlarged view of part A of the present invention.

[0018] Description of the drawings: 1. Base; 101. U-shaped frame; 1011. Knife receiving groove; 103. First lifting groove; 104. Second lifting groove; 105. Electric telescopic cylinder; 2. Fixed block; 201. Hydraulic cylinder; 202. Tool holder; 203. Shearing knife; 204. Side frame plate; 2041. Electric guide rail; 2042. Slide block; 3. Processing mechanism; 4. Anti-warping component; 401. Lower pressing plate; 4011. Storage groove; 402. Extension plate; 4021. Baffle; 4022. Contact plate; 403. Connecting plate; 404. Roller; 405. Protective shell; 406. Protection shell; 407. Expansion rod; 408. Moving plate; 4081. Groove; 5. Driving component; 501. Driving motor; 502. Driving sprocket; 503. Driven sprocket; 5031. Shaft rod; 504. Threaded rod; 505. Transmission chain; 506. Threaded sleeve; 507. Vertical plate; 6. Trimming component; 601. Mounting plate; 6011. First telescopic plate; 6012. Inductor; 602. Top block; 6021. V-shaped groove; 603. Vertical block; 6031. Connecting rod; 604. T-shaped trimming scraper; 605. Second telescopic plate. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0020] The embodiments of the present invention will be described below according to its overall structure. Embodiment

[0021] All electrical components in this application are controlled by an external controller. Guide rollers are provided on both sides of the base 1 to feed the heat dissipation copper plates to be processed and the processed ones.

[0022] Please refer to Figures 1-4As shown in the figure, a shearing device for processing heat dissipation copper plates of IGBT modules includes a base 1, a U-shaped frame 101 above it, a fixing block 2, and a processing mechanism 3 for pressing down and deburring the heat dissipation copper plates. The U-shaped frame 101 is fixed on the upper surface of the base 1 by screws. On both sides of the fixing block 2, side frame plates 204 are fixed by screws. On both sides of the two side frame plates 204, they are fixed on the two side walls of the U-shaped frame 101 by screws. At the center of the top end of the fixing block 2, a hydraulic cylinder 201 is installed by screws. The telescopic end of the hydraulic cylinder 201 penetrates through the fixing block 2 and is fixed to the upper surface of the tool holder 202 by screws. Below the fixing block 2 is a tool holder 202. A shearing knife 203 is installed on the lower surface of the tool holder 202. A knife receiving groove 1011 is opened on the inner bottom wall of the U-shaped frame 101. First lifting grooves 103 and second lifting grooves 104 are respectively opened on the inner side walls of the U-shaped frame 101. The processing mechanism 3 is arranged in the U-shaped frame 101; The processing mechanism 3 is composed of an anti-warping component 4, a driving component 5, and a trimming component 6. The anti-warping component 4 is used to press the heat dissipation copper plate. The driving component 5 is used to adjust the length of the anti-warping component 4. The trimming component 6 is used to trim the sheared heat dissipation copper plate while following the anti-warping component 4 to move downward.

[0023] When processing and shearing the heat dissipation copper plate of the IGBT module, first, the operator introduces the heat dissipation copper plate to be processed into the U-shaped frame 101 through the guiding roller. Then, two electric telescopic cylinders 105 are started through the controller to control the anti-warping component 4 to move downward until it contacts the upper surface of the heat dissipation copper plate. Then the driving component 5 works to control the abutting plate 4022 in the anti-warping component 4 to contact the side of the heat dissipation copper plate, thereby realizing automatic pressing of the heat dissipation copper plate, preventing warping during the subsequent shearing process, and flexibly adjusting the length of the anti-warping component 4 according to the actual size of the heat dissipation copper plate to make it adapt to different specifications of heat dissipation copper plates, ensuring an all-round pressing effect, reducing labor intensity and improving production efficiency; During the downward movement of the anti-warping component 4, it will also drive the trimming component 6 to move downward, so that the actuator of the trimming component 6 (the T-shaped trimming scraper 604 in the text) moves into place. Then the hydraulic cylinder 201 works to control the tool holder 202 to move downward through the telescopic end. The downward moving tool holder 202 drives the shearing knife 203 to move, and the shearing knife 203 performs a shearing operation on the heat dissipation copper plate below. At this time, the trimming component 6 accurately senses the position of the shearing knife 203. After sensing that the tool holder 202 moves upward and resets, the trimming component 6 is started to make its actuator move into contact with the edge of the heat dissipation copper plate, thereby realizing trimming of the edge of the sheared copper plate, removing burrs and rough edges, improving the processing quality of the copper plate, and at the same time reducing the influence of copper chips adhering to the shearing knife 203 on the shearing quality, resulting in an uneven shearing surface.

[0024] Please refer to Figures 3-6As shown in the figure, the anti-warping component 4 includes lower pressing plates 401 arranged on both sides of the tool retraction groove 1011. The lower surfaces of the two lower pressing plates 401 are both provided with storage grooves 4011. Extension plates 402 are slidably installed in the two storage grooves 4011. Baffles 4021 are welded to the end faces of the two extension plates 402. Side contact plates 4022 of heat dissipation copper plates are welded to the lower surfaces of the two baffles 4021. The side walls of the two lower pressing plates 401 away from the extension plates 402 are connected by a connecting plate 403. A protective shell 405 and two protective shells 406 are respectively fixed on the upper surfaces of the connecting plate 403 and the two lower pressing plates 401. The end faces of the two lower pressing plates 401 are in contact with the inner side walls of the U-shaped frame 101. The protective shell 405 is slidably arranged in the first lifting groove 103. A moving plate 408 is slidably arranged in the second lifting groove 104. Two telescopic rods 407 are symmetrically embedded in the moving plate 408. The telescopic ends of the two telescopic rods 407 are respectively fixedly connected to the two baffles 4021. A plurality of rollers 404 are arranged on the lower surfaces of the two lower pressing plates 401 and the extension plates 402. Electric telescopic cylinders 105 are fixed to the two top ends of the U-shaped frame 101 by screws. The telescopic ends of the two electric telescopic cylinders 105 are respectively fixedly connected to the upper surface of the protective shell 405 and the moving plate 408 by screws; The driving component 5 includes a driving motor 501 and two driven sprockets 503. The driving motor 501 is arranged in the protective shell 405 in the anti-warping component 4. A driving sprocket 502 is fixedly sleeved on the outer wall of the output end of the driving motor 501. The two driven sprockets 503 are arranged in the two protective shells 406 in the anti-warping component 4. The driving sprocket 502 is drivingly connected to the two driven sprockets 503 through a transmission chain 505. Shaft rods 5031 are fixedly penetrated through the centers of the two driven sprockets 503. One ends of the two shaft rods 5031 penetrate through the protective shells 406 and are connected with threaded rods 504 through flanges. Threaded sleeves 506 are sleeved on the two threaded rods 504. The driving motor 501 is fixed to the inner wall of the protective shell 405 by screws. The diameter of the driving sprocket 502 is larger than the diameters of the two driven sprockets 503. The transmission chain 505 respectively penetrates through the shell walls of the protective shell 405 and the two protective shells 406. Vertical plates 507 are fixedly connected to the end faces of the two threaded sleeves 506. The two vertical plates 507 are respectively fixed to the upper surfaces of the baffles 4021 arranged in the anti-warping component 4 by screws.

[0025] When the two electric telescopic cylinders 105 work, their telescopic ends respectively push the protective shell 406 and the moving plate 408 to move. The protective shell 406 moves along the first lifting groove 103, and the moving plate 408 moves along the second lifting groove 104. The protective shell 406 drives the two lower pressing plates 401 to move through the connecting plate 403. The moving plate 408 drives the baffle 4021 to move synchronously with the lower pressing plate 401 through the telescopic rod 407 until the rollers 404 are in contact with the upper surface of the heat dissipation copper plate; At this time, the driving motor 501 operates, drives the driving sprocket 502 to rotate through the output end, the driving sprocket 502 controls the synchronous rotation of the two driven sprockets 503 through the transmission chain 505, the two rotating driven sprockets 503 drive the shaft rods 5031 passing through the centers to rotate, and the two shaft rods 5031 both drive the threaded rods 504 to rotate. At this time, the two threaded sleeves 506 drive the baffle 4021 to move horizontally following the rotation of the threaded rods 504. During the movement of the two baffles 4021, they drive the extension plate 402 to move in the storage groove 4011, and at the same time, they also drive the telescopic end of the telescopic rod 407 to extend, so that the abutting plate 4022 contacts the side wall of the heat dissipation copper plate, completing the length adjustment of the lower pressing plate 401 and the pressing operation on the heat dissipation copper plate.

[0026] Please refer to Figure 4 、 Figure 6 and Figure 7 As shown in, the trimming assembly 6 includes a mounting plate 601. A first telescopic plate 6011 is embedded at the bottom of the mounting plate 601. The telescopic end of the first telescopic plate 6011 is fixed with a T-shaped trimming cutter 604 by screws. The bottom end of the T-shaped trimming cutter 604 is located above the tool retraction groove 1011. A second telescopic plate 605 is connected to the outer wall of the telescopic end of the first telescopic plate 6011. The second telescopic plate 605 is located in the second lifting groove 104. Both sides of the top end of the T-shaped trimming cutter 604 are magnetically adsorbed and connected to the lower surface of the mounting plate 601 through embedded magnets. The width of the vertical rod end of the T-shaped trimming cutter 604 is smaller than the thickness of the shearing cutter 203. The corner of the T-shaped trimming cutter 604 is on the same horizontal line as the outer wall of the roller 404. A groove 4081 is opened on the lower surface of the moving plate 408. A magnet is embedded in the top wall of the groove 4081. The second telescopic plate 605 is adsorbed and connected to the magnet; Vertical blocks 603 are welded on both sides of the top end of the mounting plate 601. A top block 602 is provided between the two vertical blocks 603. A V-shaped groove 6021 is opened at the center of the upper surface of the top block 602. A brush is bonded to the wall of the V-shaped groove 6021, and the V-shaped groove 6021 matches the blade surface of the shearing cutter 203. One side of each of the two vertical blocks 603 away from the top block 602 is connected to a slider 2042 through a connecting rod 6031. Both side walls of the top block 602 are fixed to the vertical blocks 603 by screws. The two ends of the two connecting rods 6031 are respectively fixed to the vertical blocks 603 and the sliders 2042. The two sliders 2042 are both slidably arranged on the electric guide rails 2041. The two electric guide rails 2041 are both fixed to the bottom of the inner wall of the side frame plate 204 by screws. An inductor 6012 is embedded on one side of the mounting plate 601 away from the second lifting groove 104. The inductor 6012 cooperates with the sensing head embedded in the side wall of the tool holder 202.

[0027] When the moving plate 408 moves downward along the second lifting groove 104, after moving a certain position, the groove 4081 opened at the bottom will contact the second telescopic plate 605 and be adsorbed and fixed by a magnet. Then, when it continues to move downward, the telescopic end of the first telescopic plate 6011 will be pulled out through the second telescopic plate 605, and the telescopic end of the first telescopic plate 6011 will drive the T-shaped trimming scraper 604 to move downward, so that the T-shaped trimming scraper 604 moves synchronously with the lower pressing plate 401; After the pressing of the heat dissipation copper plate is completed, the hydraulic cylinder 201 controls the tool holder 202 and the shearing knife 203 to move downward to perform a shearing operation on the heat dissipation copper plate. The sensing head on the tool holder 202 will pass by the inductor 6012 for the first time when moving downward, and for the second time when moving upward and resetting after shearing. When the inductor 6012 detects the sensing head for the second time, it will send a signal to the controller, and the controller will start the two electric guide rails 2041 to move. The two electric guide rails 2041 control the sliders 2042 to move. The two moving sliders 2042 drive the vertical block 603 to move through the connecting rod 6031, and the two vertical blocks 603 drive the mounting plate 601 to move. When the mounting plate 601 drives the T-shaped trimming scraper 604 to move through the first telescopic plate 6011, it will also stretch the telescopic end of the second telescopic plate 605. The moving T-shaped trimming scraper 604 trims the edge of the sheared copper plate to remove burrs and rough edges; The movement of the mounting plate 601 will also drive the top block 602 to move, and the brush in the V-shaped groove 6021 will wipe the copper chips attached to the cutting edge of the shearing knife 203.

[0028] The working principle of the present invention is as follows: When processing and shearing the IGBT module heat dissipation copper plate, first, the operator introduces the heat dissipation copper plate to be processed into the U-shaped frame 101 through the guiding roller, and then starts the two electric telescopic cylinders 105 to work through the controller. Their telescopic ends respectively push the protective shell 406 and the moving plate 408 to move. The protective shell 406 moves along the first lifting groove 103, and the moving plate 408 moves along the second lifting groove 104. The protective shell 406 drives the two lower pressing plates 401 to move through the connecting plate 403, and the moving plate 408 drives the baffle 4021 to move synchronously with the lower pressing plate 401 through the telescopic rod 407 until the roller 404 contacts the upper surface of the heat dissipation copper plate; At this time, the driving motor 501 operates, driving the driving sprocket 502 to rotate through the output end. The driving sprocket 502 controls the synchronous rotation of the two driven sprockets 503 through the transmission chain 505. The two rotating driven sprockets 503 drive the rotation of the shaft rods 5031 passing through the center. The two shaft rods 5031 both drive the rotation of the threaded rods 504. At this time, the two threaded sleeves 506 drive the baffle plates 4021 to move horizontally following the rotation of the threaded rods 504. During the movement of the two baffle plates 4021, they drive the extension plates 402 to move in the storage grooves 4011, and at the same time, they also drive the telescopic ends of the telescopic rods 407 to extend, so that the abutting plates 4022 are in contact with the side walls of the heat dissipation copper plates, completing the length adjustment of the lower pressing plate 401 and the pressing operation on the heat dissipation copper plates; When the moving plate 408 moves downward along the second lifting groove 104, after moving a certain position, the groove 4081 opened at the bottom will come into contact with the second telescopic plate 605 and be adsorbed and fixed by the magnet. Then, when continuing to move downward, it will pull out the telescopic end of the first telescopic plate 6011 through the second telescopic plate 605, and the telescopic end of the first telescopic plate 6011 drives the T-shaped trimming cutter 604 to move downward, so that the T-shaped trimming cutter 604 moves synchronously with the lower pressing plate 401; Then the hydraulic cylinder 201 operates to control the downward movement of the tool holder 202 through the telescopic end. The downward moving tool holder 202 drives the shear blade 203 to move, and the shear blade 203 performs a shearing operation on the heat dissipation copper plate below. The sensing head on the tool holder 202 will pass by the sensor 6012 for the first time when moving downward, and will pass by the sensor 6012 for the second time when moving upward and resetting after shearing. When the sensor 6012 detects the sensing head for the second time, it will send a signal to the controller, and the controller starts the movement of the two electric guide rails 2041. The two electric guide rails 2041 control the movement of the sliders 2042. The two moving sliders 2042 drive the vertical blocks 603 to move through the connecting rod 6031. The two vertical blocks 603 drive the mounting plate 601 to move. When the mounting plate 601 drives the T-shaped trimming cutter 604 to move through the first telescopic plate 6011, it will also stretch the telescopic end of the second telescopic plate 605. The moving T-shaped trimming cutter 604 trims the edge of the sheared copper plate to remove burrs and rough edges. The movement of the mounting plate 601 also drives the top block 602 to move, and the brush in the V-shaped groove 6021 wipes the copper chips attached to the blade edge of the shear blade 203, completing a complete shearing operation.

[0029] Although embodiments of the present invention have been shown and described, the specific embodiments are merely explanations of the present invention and are not limitations thereof. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations that do not make a creative contribution to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A shearing device for processing a heat dissipation copper plate of an IGBT module, comprising a base (1), an upper U-shaped frame (101), a fixing block (2), and a processing mechanism (3) for pressing down and deburring the heat dissipation copper plate, characterized in that The U-shaped frame (101) is fixed to the upper surface of the base (1) by screws, side frame plates (204) are fixed to both sides of the fixed block (2) by screws, a knife seat (202) is provided below the fixed block (2), a shear knife (203) is installed on the lower surface of the knife seat (202), a knife receiving groove (1011) is provided on the inner bottom wall of the U-shaped frame (101), a first lifting groove (103) and a second lifting groove (104) are respectively provided on the inner side walls of the U-shaped frame (101), and the processing mechanism (3) is arranged in the U-shaped frame (101); The processing mechanism (3) is composed of an anti-warping component (4), a driving component (5) and a trimming component (6); the anti-warping component (4) is used to press and hold the heat dissipation copper plate; the driving component (5) is used to adjust the length of the anti-warping component (4); and the trimming component (6) is used to trim the heat dissipation copper plate after shearing while following the anti-warping component (4) moving downward.

2. A shearing device for processing IGBT module heat dissipation copper plates according to claim 1, characterized in that: The anti-warping component (4) comprises a lower pressing plate (401) arranged on both sides of the knife receiving groove (1011), the lower surfaces of the two lower pressing plates (401) are provided with a receiving groove (4011), the two receiving grooves (4011) are slidably installed with an extension plate (402), the end surfaces of the two extension plates (402) are welded with a baffle plate (4021), the lower surfaces of the two baffle plates (4021) are welded with a side abutment plate (4022) of a heat dissipation copper plate, the side walls of the two lower pressing plates (401) away from the extension plates (402) are connected by a connecting plate (403), and the upper surfaces of the connecting plate (403) and the two lower pressing plates (401) are respectively fixed with a protective shell (405) and two protective shells (406).

3. A shearing device for processing IGBT module heat dissipation copper plates according to claim 2, characterized in that: The end surfaces of the two lower pressure plates (401) are in contact with the inner side wall of the U-shaped frame (101); the protective shell (405) is slidably arranged in the first lifting groove (103); a movable plate (408) is slidably arranged in the second lifting groove (104); telescopic rods (407) are symmetrically embedded in the movable plate (408); the telescopic ends of the two telescopic rods (407) are respectively fixedly connected to the two baffles (4021); the lower surfaces of the two lower pressure plates (401) and the extension plate (402) are respectively provided with a plurality of rollers (404); the two top ends of the U-shaped frame (101) are fixed with electric telescopic cylinders (105) by screws; the telescopic ends of the two electric telescopic cylinders (105) are respectively fixed to the protective shell (405) and the upper surface of the movable plate (408) by screws.

4. A shearing device for processing IGBT module heat dissipation copper plates according to claim 1, characterized in that: The drive assembly (5) comprises a drive motor (501) and two driven sprockets (503); the drive motor (501) is arranged in a protective shell (405) in the anti-warping assembly (4); a driving sprocket (502) is fixedly sleeved on the outer wall of the output end of the drive motor (501); the two driven sprockets (503) are arranged in two protective shells (406) in the anti-warping assembly (4); the driving sprocket (502) is transmission-connected to the two driven sprockets (503) via a transmission chain (505); a shaft (5031) is fixedly penetrated at the center of the two driven sprockets (503); one end of the two shafts (5031) passes through the protective shell (406) and is connected to a threaded rod (504) via a flange; and a threaded sleeve (506) is sleeved on the two threaded rods (504).

5. A shearing device for processing IGBT module heat dissipation copper plates according to claim 4, characterized in that: The driving motor (501) is fixed to the inner wall of the protective shell (405) by means of screws; the diameter of the driving sprocket (502) is greater than the diameter of the two driven sprockets (503); the transmission chain (505) passes through the protective shell (405) and the shell walls of the two protective shells (406) respectively; the end surfaces of the two threaded sleeves (506) are fixedly connected to vertical plates (507); and the two vertical plates (507) are fixed to the upper surface of a baffle (4021) provided on the anti-warping component (4) by means of screws.

6. A shearing device for processing IGBT module heat dissipation copper plates according to claim 3, characterized in that: The trimming assembly (6) comprises a mounting plate (601), a first telescopic plate (6011) being embedded in the bottom of the mounting plate (601), a T-shaped trimming scraper (604) being fixed by screws at the telescopic end of the first telescopic plate (6011), the bottom end of the T-shaped trimming scraper (604) being located above the blade receiving groove (1011), a second telescopic plate (605) being connected to the outer wall of the telescopic end of the first telescopic plate (6011), and the second telescopic plate (605) being located in the second lifting groove (104).

7. A shearing device for processing IGBT module heat dissipation copper plates according to claim 6, characterized in that: Both sides of the top of the T-shaped trimming scraper (604) are magnetically adsorbed and connected to the lower surface of the mounting plate (601) via embedded magnets; the width of the vertical rod end of the T-shaped trimming scraper (604) is smaller than the thickness of the shearing blade (203); the corner of the T-shaped trimming scraper (604) is on the same horizontal line as the outer wall of the roller (404); a groove (4081) is provided on the lower surface of the movable plate (408); a magnet is embedded in the groove top wall of the groove (4081); and the second telescopic plate (605) is adsorbed and connected to the magnet.

8. The shearing device for processing IGBT module heat dissipation copper plates according to claim 6, characterized in that: Vertical blocks (603) are welded to both sides of the top of the mounting plate (601), a top block (602) is arranged between the two vertical blocks (603), a V-shaped groove (6021) is provided at the center of the upper surface of the top block (602), a brush is bonded to the groove wall of the V-shaped groove (6021), and the V-shaped groove (6021) matches the blade surface of the shear knife (203), and the two vertical blocks (603) are connected to the slider (2042) on one side away from the top block (602) via a connecting rod (6031).

9. A shearing device for processing IGBT module heat dissipation copper plates according to claim 8, characterized in that: The two side walls of the top block (602) are fixedly connected to the vertical block (603) by screws, the two ends of the two connecting rods (6031) are fixedly connected to the vertical block (603) and the slider (2042) respectively, the two sliders (2042) are slidably set on the electric guide rail (2041), and the two electric guide rails (2041) are fixed to the bottom of the inner wall of the side frame plate (204) by screws. A sensor (6012) is embedded in the side of the mounting plate (601) away from the second lifting slot (104), and the sensor (6012) cooperates with the sensor head embedded in the side wall of the knife seat (202).

10. The shearing device for processing IGBT module heat dissipation copper plates according to claim 1, characterized in that: Both sides of the two side frame plates (204) are fixed to the two frame walls of the U-shaped frame (101) by screws, a hydraulic cylinder (201) is installed at the center of the top end of the fixing block (2) by screws, and the telescopic ends of the hydraulic cylinder (201) penetrate the fixing block (2) and are fixed to the upper surface of the knife seat (202) by screws.

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