A die-stamping device and method for copper busbars in electrical control boxes of new energy vehicles

Abstract

This invention discloses an in-mold stamping device for copper busbars in a new energy vehicle electrical control box. A lower die base is fixed above a translation plate, and a lower template is fixed above the lower die base. A centering structure is provided on the lower template, and a pushing structure is installed on the lower template. The internal cavity of the lower die base is designed to form an installation cavity. A driving component is slidably installed in the installation cavity. The driving component is slidably connected to the centering structure and the pushing structure, and is slidably connected to the driving frame. A top plate is fixed above the base by four columns. A hydraulic cylinder is fixed above the top plate. The push rod of the hydraulic cylinder passes through the top plate and is positioned below the top plate. The bottom end of the push rod of the hydraulic cylinder is fixed to the upper die base. The centering structure can first clamp the workpiece, so that the front and rear sides of all workpieces are in the same position. Then, the pushing structure moves the workpiece to the left and abuts against the positioning block, ensuring that the position of all workpieces is the same and improving the processing accuracy during subsequent bending.

Description

Technical Field

[0001] This invention relates to the field of stamping technology, and in particular to an in-mold stamping device and method for copper busbars in the electrical control box of a new energy vehicle. Background Technology

[0002] The copper busbars in the electrical control box of new energy vehicles are mainly conductive components used to connect core components such as battery packs, motors, and electronic controls. Their function is to collect and distribute power to meet the power requirements of new energy vehicles. They are typically made of copper or aluminum, with thicknesses ranging from 0.4mm to 5mm or even thicker, and possess excellent electrical conductivity, thermal conductivity, and corrosion resistance.

[0003] After the copper busbar is stamped into the required sheet shape, it needs to be stamped a second time to bend it into a complete copper busbar structure. Currently, when stamping and bending copper busbars, multiple positioning blocks are typically placed on the lower die base in a U-shape. The copper busbar to be stamped is placed on top of the lower die base, with its left end and front and rear ends in contact with the positioning blocks. Then, the upper die base is moved down to stamp and bend the copper busbar. Because the spacing between the front and rear positioning blocks on the lower die base cannot be guaranteed to be exactly the same as the width of the copper busbar, it is impossible to ensure that the position of each copper busbar is identical. Furthermore, the copper busbar is merely placed within the space formed by the positioning blocks without being fixed, which may cause the copper busbar to shift to the right during stamping, resulting in inconsistent stamping and bending accuracy. Therefore, an in-mold stamping device for copper busbars in new energy vehicle electrical control boxes has been designed. Summary of the Invention

[0004] The present invention provides an in-mold stamping equipment and method for copper busbars in the electrical control box of a new energy vehicle, which solves the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A copper busbar in-mold stamping equipment for a new energy vehicle electrical control box includes a base, a drive frame fixed on the base, two symmetrically distributed linear tracks installed above the base, a translation plate slidably mounted above the linear tracks via a slider, a cylinder fixed to the rear side above the base, the cylinder's push rod connected to the translation plate, a lower die base fixed above the translation plate, a lower template fixed above the lower die base, a copper busbar placed above the lower template, a centering structure provided on the lower template, a pushing structure installed on the lower template, an internal cavity design of the lower die base forming an installation cavity, a drive component slidably mounted vertically within the installation cavity, the drive component slidably connected to the centering structure and the pushing structure, and the drive component slidably connected to the drive frame; A top plate is fixed above the base by four columns. A hydraulic cylinder is fixed above the top plate. The push rod of the hydraulic cylinder passes through the top plate and is positioned below the top plate. The bottom end of the push rod of the hydraulic cylinder is fixed to an upper mold base.

[0006] Preferably, two longitudinal grooves are respectively opened on the upper left and right sides of the lower template. The two longitudinal grooves on the left and the two longitudinal grooves on the right are symmetrically distributed, and the four longitudinal grooves are distributed in a parallelogram structure. A bending notch is opened on the upper right side of the lower template, and the bending notch communicates with the mounting cavity. Two transverse grooves are opened on the upper right side of the lower template, and the two transverse grooves are symmetrically distributed about the bending notch. A positioning block is fixed on the upper left side of the lower template. The positioning block is used to abut the left end of the copper busbar.

[0007] Preferably, the central structure includes a longitudinal slider slidably mounted in a longitudinal groove. A guide roller is rotatably mounted above the longitudinal slider via a shaft pin. The guide roller is positioned above the lower mold plate. A longitudinal block is fixed at the lower end of the longitudinal slider. The longitudinal block is slidably placed in the mounting cavity of the lower mold base. A moving groove is formed through the left and right sides of the surface of the longitudinal block. The width of the longitudinal slider is greater than the width of the longitudinal groove. The top and bottom ends of the longitudinal block can be provided with bull's eye balls as needed. The bull's eye balls enable the top and bottom ends of the longitudinal block to roll into contact with the lower surface of the lower mold plate and the bottom end of the mounting cavity, respectively, thereby facilitating the linear movement of the longitudinal block within the mounting cavity.

[0008] Preferably, the bottom end of the mounting cavity is provided with a circular hole, which extends downward and penetrates the translation plate. The driving component includes four guide columns with a rectangular structure fixed in the mounting cavity. The four guide columns are slidably sleeved with a lifting plate. The lifting plate is provided with four push rods, which extend into the moving groove. A lifting rod is fixed on the lifting plate. The lifting rod passes through a circular hole and is positioned below the translation plate. A drive rod is fixed below the lifting rod. A drive groove is provided on the drive frame. The drive rod slides into the drive groove.

[0009] Preferably, the drive groove includes an upper horizontal groove formed above the front side of the drive frame and a lower horizontal groove formed below the rear side of the drive frame. The upper horizontal groove and the lower horizontal groove are connected by a lower inclined groove. The upper horizontal groove and the lower horizontal groove are designed to be parallel. In the initial state, the translation plate is located in front of the base and the drive rod slides in the upper horizontal groove.

[0010] Preferably, the moving groove includes a vertically arranged holding groove, and the top of the holding groove is provided with an inclined offset groove, the distance between the top of the offset groove and the copper busbar is greater than the distance between the bottom of the offset groove and the copper busbar; When the push rod is at the connection between the offset groove and the holding groove, the guide roller is in contact with the surface of the copper busbar and there is a certain resistance between them. At this time, the drive rod is still on the lower inclined groove. Then the translation plate continues to move backward, the drive rod continues to move downward along the lower inclined groove, and the push rod will move downward along the holding groove. The positions of the longitudinal block and the guide roller remain unchanged, ensuring that the guide roller is always in contact with the copper busbar. When the translation plate moves to the last side, the lower template is directly below the upper mold base, the drive rod extends into the lower horizontal groove, and the push rod is in the holding groove.

[0011] Preferably, the pushing structure includes a pushing plate slidably placed above the lower template. A transverse slider is fixed to the front and rear sides of the lower end of the pushing plate. The transverse slider is slidably inserted into a transverse groove. A transverse block is fixed to the bottom end of the transverse slider. The transverse block is slidably placed in the mounting cavity of the lower mold base. A pushing groove is formed through the transverse block from front to back. The width of the transverse slider is greater than the width of the transverse groove. The top and bottom ends of the transverse block can be provided with bull's eye balls as needed. The bull's eye balls allow the top and bottom ends of the transverse block to roll into contact with the lower surface of the lower template and the bottom end of the mounting cavity, respectively, thereby facilitating the linear movement of the transverse block within the mounting cavity. The two push rods on the right are extended to form extended rods, and drive rollers are provided on the extended rods. The drive rollers are slidably inserted into the push grooves.

[0012] Preferably, the pushing groove includes an upper vertical groove located at the top of the transverse block, an approach groove inclined to the lower right is formed at the lower end of the upper vertical groove, a distancing groove inclined to the lower left is formed at the lower end of the approach groove, and a lower vertical groove is formed at the lower end of the distancing groove. In the initial state, that is, when the lifting plate is at the top, the drive roller is placed in the upper vertical groove. When the lifting plate moves down a certain distance so that the push rod is at the intersection of the offset groove and the holding groove, the drive roller is at the intersection of the near groove and the upper vertical groove. When the drive roller moves away from the connection between the trough and the lower vertical trough, the drive rod moves to the intersection of the lower inclined trough and the lower horizontal trough.

[0013] Preferably, the upper mold base includes a lifting seat that is slidably disposed between four columns. The upper end of the lifting seat is fixed to the bottom end of the push rod of the hydraulic cylinder, and a fixed seat is fixed to the lower end of the lifting seat. A bending head is installed on the fixed seat, and the bending head is located above the bending notch. Two sets of clamping components are fixed below the fixed base. The two clamping components are located above the copper busbar. The clamping components include a lifting sleeve fixed below the fixed base. The bottom end of the lifting sleeve has a lifting cavity with a convex structure. An I-shaped clamping block is slidably inserted into the lifting cavity. A lifting spring is provided in the lifting cavity. The upper and lower ends of the lifting spring abut against the clamping block and the top of the lifting cavity, respectively. The clamping block always tends to move downwards under the action of the lifting spring.

[0014] A method for in-mold stamping of copper busbars in a new energy vehicle electrical control box includes the following steps: S1. The extension of the cylinder push rod causes the translation plate to move forward along the straight track. The translation plate is at the frontmost position, and the two guide rollers on the left and the two guide rollers on the right of the translation plate are far apart from each other. The push plate is at the rightmost end. S2. The copper busbar to be bent is placed above the lower template and within the space formed by the four guide rollers, positioning blocks and push plate; S3. The cylinder push rod retracts, causing the translation plate to move the lower template and the copper busbar to be punched and bent above the lower template to the lower part of the upper mold base. S4. Start the hydraulic cylinder. The hydraulic cylinder causes the upper mold base to move downward and punch and bend the copper busbar below. Then the upper mold base returns to its original position under the action of the hydraulic cylinder. S5. The cylinder pushes the translation plate to move the lower template to the front, removes the stamped and bent copper busbar, and places a new copper busbar to be stamped. Repeat the above operation.

[0015] The beneficial effects of this invention are: 1. By setting a sliding plate that slides back and forth above the base, the lower mold base and the lower template are installed on the sliding plate. When placing the workpiece, the lower template moves forward away from the upper mold base. After the workpiece is placed, the lower template moves below the upper mold base before stamping, which avoids the personnel's hands from reaching under the upper mold base and improves safety. 2. By setting a centering structure and a pushing structure on the lower template, and a driving component inside the lower mold base, in conjunction with the driving frame set on the base, the centering structure can first clamp the workpiece during the process of the translation plate driving the workpiece to move backward, so that the front and rear sides of all workpieces are in the same position. Then the pushing structure makes the workpiece move to the left and abut against the positioning block, ensuring that the position of all workpieces is the same, improving the processing accuracy during subsequent bending. In addition, before the stamping and bending, the pushing plate can be away from the bending end of the workpiece to avoid interference caused by the pushing plate contacting the workpiece. 3. By setting a clamping component below the upper mold base, the clamping component will first clamp and fix the workpiece below. The bending head contacts the workpiece and causes the right end of the workpiece to bend. During this process, the clamping component can shrink and compensate to ensure that the workpiece is clamped and fixed. The packaged workpiece will not lift up during the bending process, thus improving the bending accuracy. Attached Figure Description

[0016] Figure 1 This is a front sectional view of a copper busbar in-mold stamping device for a new energy vehicle electrical control box proposed in this invention; Figure 2 for Figure 1Axonometric projections of the front and rear angles; Figure 3 for Figure 1 Rear view diagram; Figure 4 for Figure 3 Schematic diagram of the cross section at point AA; Figure 5 for Figure 1 Structural diagram of the middle base, lower template, central structure, and pushing structure. Figure 6 for Figure 5 Top view; Figure 7 for Figure 5 Exploded view of the lower mold base, lower template, central structure, and pushing structure; Figure 8 for Figure 7 A structural diagram of the central drive frame, the central structure, and the push structure; Figure 9 for Figure 8 A schematic diagram of the structure of the horizontal block.

[0017] The diagram labels are as follows: 1. Base; 11. Linear rail; 12. Drive frame; 121. Upper horizontal groove; 122. Lower inclined groove; 123. Lower horizontal groove; 13. Cylinder; 14. Column; 2. Translation plate; 3. Lower mold base; 4. Lower template; 41. Positioning block; 42. Longitudinal groove; 43. Transverse groove; 44. Bending notch; 5. Centering structure; 51. Guide roller; 511. Longitudinal slider; 52. Longitudinal block; 521. Offset groove; 522. Holding groove; 53. Lifting plate 54. Lifting rod; 541. Drive rod; 55. Push rod; 6. Pushing structure; 61. Push plate; 611. Horizontal slider; 62. Horizontal block; 621. Upper vertical groove; 622. Approach groove; 623. Distancing groove; 624. Lower vertical groove; 63. Extension rod; 631. Drive roller; 7. Top plate; 8. Hydraulic cylinder; 81. Lifting seat; 82. Fixed seat; 83. Clamping component; 831. Lifting sleeve; 832. Lifting spring; 833. Clamping block; 84. Bending head. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figures 1-8A copper busbar in-mold stamping equipment for a new energy vehicle electrical control box includes a base 1, a drive frame 12 fixed on the base 1, two symmetrically distributed linear tracks 11 installed above the base 1, a sliding plate 2 slidably mounted above the linear tracks 11 via a slider, a cylinder 13 fixed on the rear side above the base 1, the push rod of the cylinder 13 connected to the sliding plate 2, a lower mold base 3 fixed above the sliding plate 2, a lower template 4 fixed above the lower mold base 3, a copper busbar placed above the lower template 4, a centering structure 5 set on the lower template 4, a pushing structure 6 installed on the lower template 4, the lower mold base 3 has an internal cavity design forming an installation cavity, a drive component is slidably mounted up and down in the installation cavity, the drive component is slidably connected to the centering structure 5 and the pushing structure 6, and the drive component is slidably connected to the drive frame 12; A top plate 7 is fixed above the base 1 by four columns 14. A hydraulic cylinder 8 is fixed above the top plate 7. The push rod of the hydraulic cylinder 8 passes through the top plate 7 and is placed below the top plate 7. The bottom end of the push rod of the hydraulic cylinder 8 is fixed to the upper mold base.

[0020] Reference Figures 5-7 Two longitudinal grooves 42 are respectively opened on the left and right sides of the upper part of the lower template 4. The two longitudinal grooves 42 on the left and the two longitudinal grooves 42 on the right are symmetrically distributed, and the four longitudinal grooves 42 are distributed in a parallelogram structure. A bending notch 44 is opened on the upper right side of the lower template 4, which is connected to the mounting cavity. Two transverse grooves 43 are opened on the upper right side of the lower template 4. The two transverse grooves 43 are symmetrically distributed about the bending notch 44. A positioning block 41 is fixed on the upper left side of the lower template 4. The positioning block 41 is used to abut the left end of the copper busbar.

[0021] Reference Figures 4-8 The central structure 5 includes a longitudinal slider 511 slidably installed in the longitudinal groove 42. A guide roller 51 is rotatably installed above the longitudinal slider 511 via a shaft pin. The guide roller 51 is located above the lower template 4. A longitudinal block 52 is fixed at the lower end of the longitudinal slider 511. The longitudinal block 52 is slidably placed in the mounting cavity of the lower mold base 3. A moving groove is formed through the left and right sides of the surface of the longitudinal block 52. The width of the longitudinal slider 511 is greater than the width of the longitudinal groove 42. The top and bottom ends of the longitudinal block 52 can be provided with bull's eye balls as needed. The bull's eye balls make the top and bottom ends of the longitudinal block 52 roll contact with the lower surface of the lower template 4 and the bottom end of the mounting cavity, respectively, thereby facilitating the linear movement of the longitudinal block 52 in the mounting cavity.

[0022] The bottom of the mounting cavity has a round hole, which extends downward and penetrates the translation plate 2. The driving component includes four guide columns with a rectangular structure fixed in the mounting cavity. The four guide columns are slidably connected to the lifting plate 53. The lifting plate 53 is provided with four push rods 55, which extend into the moving groove. A lifting rod 54 is fixed on the lifting plate 53. The lifting rod 54 passes through the round hole and is placed below the translation plate 2. A drive rod 541 is fixed below the lifting rod 54. A drive groove is opened on the drive frame 12. The drive rod 541 slides into the drive groove.

[0023] Reference Figure 7 , Figure 8 The drive slot includes an upper horizontal slot 121 opened above the front side of the drive frame 12, and a lower horizontal slot 123 opened below the rear side of the drive frame 12. The upper horizontal slot 121 and the lower horizontal slot 123 are connected by a lower inclined slot 122, and the upper horizontal slot 121 and the lower horizontal slot 123 are designed to be parallel. In the initial state, when the translation plate 2 is in front of the base 1, the drive rod 541 slides in the upper horizontal groove 121. Then, the push rod of the cylinder 13 retracts, causing the translation plate 2 to move backward along the straight track 11. When the drive rod 541 moves into the lower inclined groove 122 and moves backward along the lower inclined groove 122, since the drive rod 541, the lifting rod 54 and the lifting plate 53 can only move up and down, the lifting plate 53 and the drive rod 541 will gradually move downward along the guide column in a straight line until the drive rod 541 moves to the connection between the lower horizontal groove 123 and the lower inclined groove 122. After that, when the drive rod 541 moves backward along the lower horizontal groove 123, the height of the lifting plate 53 and the drive rod 541 remains unchanged. Conversely, when the translation plate 2 drives the drive rod 541 to move forward, after the drive rod 541 moves to the connection between the lower horizontal groove 123 and the lower inclined groove 122, the height of the drive rod 541 and the lifting plate 53 will gradually increase as the drive rod 541 moves forward along the lower inclined groove 122 until it moves to the connection between the upper horizontal groove 121 and the lower inclined groove 122.

[0024] Reference Figure 7 , Figure 8 The moving slot includes a vertically arranged holding slot 522, and an inclined offset slot 521 is provided at the top of the holding slot 522. The distance between the top of the offset slot 521 and the copper busbar is greater than the distance between the bottom of the offset slot 521 and the copper busbar. When the translation plate 2 is at its foremost position, the drive rod 541 is in the upper horizontal groove 121, and the lifting plate 53 is at its highest position. At this time, the push rod 55 slides into the offset groove 521. Then, as the translation plate 2 drives the drive rod 541 to move backward along the lower inclined groove 122, the lifting plate 53 will gradually move downward, thereby causing the push rod 55 to move downward along the offset groove 521. As the push rod 55 moves downward along the offset groove 521, the push rod 55 will push the longitudinal block 52 closer to the copper busbar, thereby causing the guide roller 51 to approach the copper busbar as well. When the push rod 55 is at the connection between the offset groove 521 and the holding groove 522, the guide roller 51 is in contact with the surface of the copper busbar and there is a certain resistance between them. At this time, the drive rod 541 is still on the lower inclined groove 122. Then the translation plate 2 continues to move backward, the drive rod 541 continues to move downward along the lower inclined groove 122, and the push rod 55 will move downward along the holding groove 522. The positions of the longitudinal block 52 and the guide roller 51 remain unchanged, ensuring that the guide roller 51 is always in contact with the copper busbar. When the translation plate 2 moves to the last side, the lower template 4 is directly below the upper mold base, the drive rod 541 extends into the lower horizontal groove 123, and the push rod 55 is in the holding groove 522.

[0025] Reference Figures 4-8 The pushing structure 6 includes a pushing plate 61 that is slidably placed above the lower template 4. A horizontal slider 611 is fixed on the front and rear sides of the lower end of the pushing plate 61. The horizontal slider 611 is slidably inserted into the horizontal groove 43. A horizontal block 62 is fixed at the bottom of the horizontal slider 611. The horizontal block 62 is slidably placed in the mounting cavity of the lower mold base 3. A pushing groove is formed through the front and rear of the horizontal block 62. The width of the horizontal slider 611 is greater than the width of the horizontal groove 43. The top and bottom of the horizontal block 62 can be provided with bull's eye balls as needed. The bull's eye balls make the top and bottom of the horizontal block 62 roll contact with the lower surface of the lower template 4 and the bottom of the mounting cavity, respectively, so as to facilitate the linear movement of the horizontal block 62 in the mounting cavity. The two push rods 55 on the right side are extended to form an extended rod 63. A drive roller 631 is provided on the extended rod 63, and the drive roller 631 is slidably inserted into the push groove.

[0026] The push groove includes an upper vertical groove 621 located at the top of the horizontal block 62. The lower end of the upper vertical groove 621 has an approach groove 622 that slopes downward to the right. The lower end of the approach groove 622 has a disengagement groove 623 that slopes downward to the left. The lower end of the disengagement groove 623 has a lower vertical groove 624. In the initial state, when the lifting plate 53 is at its highest position, the drive roller 631 is placed in the upper vertical groove 621. When the lifting plate 53 moves down a certain distance so that the push rod 55 is at the intersection of the offset groove 521 and the holding groove 522, the drive roller 631 is at the intersection of the approach groove 622 and the upper vertical groove 621. Then, when the drive roller 631 moves down along the approach groove 622, the drive roller 631 will drive the push plate 61 to move to the left and closer to the copper busbar through the transverse block 62, and push the copper busbar to move to the left so that the left end of the copper busbar abuts against the positioning block 41. Then, the drive roller 631 continues to move downwards and will move into the space away from the groove 623 and move downwards along the space away from the groove 623. During the downward movement along the space away from the groove 623, the drive roller 631 will push the transverse block 62 to drive the push plate 61 away from the copper busbar. There is a certain distance between the push plate 61 and the copper busbar, which ensures that the copper busbar will not contact the push plate 61 during the subsequent bending process, thus avoiding interference. When the drive roller 631 moves away from the connection between the groove 623 and the lower vertical groove 624, the drive rod 541 moves to the intersection of the lower inclined groove 122 and the lower horizontal groove 123.

[0027] Reference Figure 3 , Figure 4 The upper mold base includes a lifting seat 81 that is slidably disposed between four columns 14. The upper end of the lifting seat 81 is fixed to the bottom end of the push rod of the hydraulic cylinder 8. The lower end of the lifting seat 81 is fixed to a fixed seat 82. A bending head 84 is installed on the fixed seat 82 and the bending head 84 is located above the bending notch 44. Two sets of clamping components 83 are fixed below the fixed base 82. The two clamping components 83 are located above the copper busbar. The clamping component 83 includes a lifting sleeve 831 fixed below the fixed base 82. The bottom end of the lifting sleeve 831 has a lifting cavity with a convex structure. A clamping block 833 with an I-shaped structure is slidably inserted into the lifting cavity. A lifting spring 832 is provided in the lifting cavity. The upper and lower ends of the lifting spring 832 abut against the clamping block 833 and the top of the lifting cavity, respectively. Under the action of the lifting spring 832, the clamping block 833 always has a downward tendency. When the lifting seat 81 moves downward under the action of the hydraulic cylinder 8, the clamping block 833 will first clamp and fix the copper busbar below. Then, as the lifting seat 81 continues to move downward, the clamping block 833 can retract into the lifting cavity. After that, the bending head 84 contacts the copper busbar and bends the right end of the copper busbar. During this process, the clamping block 833 can retract to compensate, ensuring the clamping and fixing of the copper busbar, and will not interfere with the normal bending.

[0028] Working principle: In the initial state, the push rod of cylinder 13 extends, so that the translation plate 2, the lower template 4, and the lower mold base 3 are at the frontmost side above the base 1. At this time, the drive rod 541 is located in the upper horizontal groove 121, the lifting plate 53 is at the top, and the push rod 55 on the lifting plate 53 is located in the offset groove 521 of the longitudinal block 52. At this time, the two guide rollers 51 on the left and the two guide rollers 51 on the right are far away from each other. At the same time, the extension rod 63 on the push rod 55 and the drive roller 631 are located in the upper vertical groove 621 on the transverse block 62, and the push plate 61 is located at the rightmost side above the lower template 4. The copper busbar to be punched and bent is placed above the lower template 4 and within the space formed by the four guide rollers 51, the positioning block 41 and the push plate 61. Then, the retraction of the push rod of the cylinder 13 will cause the translation plate 2 to move along the straight track 11 to move the lower template 4 and the copper busbar to be punched and bent above the lower mold base 3 backward to the lower mold base.

[0029] As the translation plate 2 moves backward in a straight line under the action of the cylinder 13, the drive rod 541 located on the lifting rod 54 will move backward along the drive groove on the drive frame 12 under the action of the translation plate 2. The drive rod 541 will first move backward along the upper horizontal groove 121. During this process, the position of the drive rod 541 will not change. When the drive rod 541 moves to the intersection of the lower inclined groove 122 and the upper horizontal groove 121, since the drive rod 541, the lifting rod 54, and the lifting plate 53 can only move up and down, as the translation plate 2 drives the drive rod 541 to move backward along the lower inclined groove 122, the height of the drive rod 541 gradually decreases. This will cause the lifting plate 53 and the drive rod 541 to move downward in a straight line along the guide column. When the lifting plate 53 moves downward, the push rod 55 located on the lifting plate 53 will also move downward, thus causing the push rod 55 to move downward along the offset groove 521. During the downward movement of the push rod 55 along the offset groove 521, since the distance between the top of the offset groove 521 and the copper busbar is greater than the distance between the bottom of the offset groove 521 and the copper busbar, the push rod 55 will push the longitudinal block 52 closer to the copper busbar, thereby causing the guide roller 51 to approach the copper busbar as well. When the push rod 55 is at the connection between the offset groove 521 and the holding groove 522, the guide roller 51 will contact the surface of the copper busbar and there will be a certain resistance between them. At this time, the drive rod 541 is still on the lower inclined groove 122. As the drive rod 541 continues to move downward, the push rod 55 will move downward along the holding groove 522. The positions of the longitudinal block 52 and the guide roller 51 remain unchanged, ensuring that the guide roller 51 is always in contact with the copper busbar. When the push rod 55 is at the connection between the offset groove 521 and the holding groove 522, the drive roller 631 on the extension rod 63 fixed to the right push rod 55 is at the intersection of the approach groove 622 and the upper vertical groove 621. Then the translation plate 2 continues to move backward, and the drive rod 541 will continue to move downward along the lower inclined groove 122, thereby driving the lifting plate 53, the extension rod 63 and the drive roller 631 to continue to move downward. The drive roller 631 will also move downward along the approach groove 622. At this time, the drive roller 631 will drive the push plate 61 to the left to approach the copper busbar and contact the copper busbar through the transverse block 62. After contacting the copper busbar, the push plate 61 will also push the copper busbar to the left, so that the left end of the copper busbar abuts against the positioning block 41, thereby positioning the copper busbar and ensuring that the position of each copper busbar is consistent, thus ensuring the accuracy during stamping and bending. Then, the drive roller 631 continues to move downwards until it moves into the groove away from 623 and moves downwards along the groove away from 623. During the downward movement along the groove away from 623, the drive roller 631 will push the transverse block 62 to drive the push plate 61 away from the copper busbar. There is a certain distance between the push plate 61 and the copper busbar, which prevents the copper busbar from contacting the push plate 61 during the subsequent bending process, thus avoiding interference. When the drive roller 631 moves to the connection between the groove away from 623 and the lower vertical groove 624, the drive rod 541 moves to the intersection of the lower inclined groove 122 and the lower horizontal groove 123. Afterwards, when the drive rod 541 moves backwards along the lower horizontal groove 123, the height of the lifting plate 53 and the drive rod 541 remains unchanged until the lower template 4 moves directly below the upper mold base. Then, the hydraulic cylinder 8 is activated. The push rod of the hydraulic cylinder 8 causes the upper mold seat to move downward. When the lifting seat 81 moves downward under the action of the hydraulic cylinder 8, the clamping block 833 will first clamp and fix the copper busbar below. Then, the lifting seat 81 continues to move downward, and the clamping block 833 can retract into the lifting cavity. Then, the bending head 84 contacts the copper busbar and bends the right end of the copper busbar. During this process, the clamping block 833 can retract to compensate, ensuring the clamping and fixing of the copper busbar, and will not interfere with the normal bending.

[0030] After the stamping and bending, the push rod of the hydraulic cylinder 8 drives the upper mold base to move upward and return to its original position. The push rod of the cylinder 13 extends, causing the translation plate 2 to drive the lower template 4 to move forward. The stamped and bent copper busbar can then be removed, and a new copper busbar to be stamped can be placed. The above operation can be repeated to continuously stamp and bend the copper busbar.

[0031] By setting a sliding plate 2 that slides back and forth above the base 1, the lower mold base 3 and the lower template 4 are installed on the sliding plate 2. When placing the workpiece, the lower template 4 moves forward away from the upper mold base. After the workpiece is placed, the lower template 4 moves below the upper mold base before stamping, which avoids the personnel's hands from reaching under the upper mold base and improves safety. By setting a centering structure 5 and a pushing structure 6 on the lower template 4, and a driving component inside the lower mold base 3, in conjunction with the driving frame 12 set on the base 1, during the process of the translation plate 2 driving the workpiece to move backward, the centering structure 5 can first clamp the workpiece, so that the front and rear sides of all workpieces are in the same position. Then the pushing structure 6 makes the workpiece move to the left and abut against the positioning block 41, ensuring that the position of all workpieces is the same, improving the processing accuracy during subsequent bending. Moreover, before the stamping and bending, the pushing plate 61 can move away from the bending end of the workpiece, avoiding the pushing plate 61 from contacting the workpiece and causing interference. By setting a clamping component 83 below the upper mold base, the clamping component 83 will first clamp and fix the workpiece below. The bending head 84 contacts the workpiece and causes the right end of the workpiece to bend. During this process, the clamping component 83 can shrink and compensate to ensure that the workpiece is clamped and fixed. The packaged workpiece will not lift up during the bending process, thus improving the bending accuracy.

[0032] A method for in-mold stamping of copper busbars in a new energy vehicle electrical control box includes the following steps: S1, the extension of the push rod of cylinder 13 causes the translation plate 2 to move forward along the straight track 11. The translation plate 2 is at the frontmost position, the two guide rollers 51 on the left and the two guide rollers 51 on the right of the translation plate 2 are far apart from each other, and the push plate 61 is at the rightmost end. S2. The copper busbar to be bent is placed above the lower template 4 and placed in the space formed by the four guide rollers 51, the positioning block 41 and the push plate 61. S3, the cylinder 13 push rod retracts, causing the translation plate 2 to move the lower template 4 and the copper busbar to be punched and bent above the lower template 4 to the lower mold base; S4. Start hydraulic cylinder 8. Hydraulic cylinder 8 causes the upper mold base to move downward and punch and bend the copper busbar below. Then the upper mold base returns to its original position under the action of hydraulic cylinder 8. S5, cylinder 13 pushes the translation plate 2 to move the lower template 4 to the front, removes the stamped and bent copper busbar, and places a new copper busbar to be stamped, repeating the above operation.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A copper busbar in-mold stamping equipment for a new energy vehicle electrical control box, characterized in that, Includes a base (1), on which a drive frame (12) is fixed. Two symmetrically distributed linear tracks (11) are installed above the base (1). A sliding plate (2) is installed above the linear tracks (11) by sliding a slider. A cylinder (13) is fixed on the rear side above the base (1). The push rod of the cylinder (13) is connected to the sliding plate (2). A lower mold base (3) is fixed above the sliding plate (2). A lower template (4) is fixed above the lower mold base (3). A copper busbar is placed above the lower template (4). A centering structure (5) is provided on the lower template (4). A pushing structure (6) is installed on the lower template (4). The cavity inside the lower mold base (3) is designed to form an installation cavity. A drive component is slidably installed in the installation cavity. The drive component is slidably connected to the centering structure (5) and the pushing structure (6). The drive component is slidably connected to the drive frame (12). Two longitudinal grooves (42) are respectively opened on the upper left and right sides of the lower template (4). A bending notch (44) is opened on the upper right side of the lower template (4). The bending notch (44) is connected to the mounting cavity. Two transverse grooves (43) are opened on the upper right side of the lower template (4). A positioning block (41) is fixed on the upper left side of the lower template (4). The central structure (5) includes a longitudinal slider (511) that is slidably installed in the longitudinal groove (42). A guide roller (51) is rotatably installed above the longitudinal slider (511) via a shaft pin. A longitudinal block (52) is fixed at the lower end of the longitudinal slider (511). The longitudinal block (52) is slidably placed in the mounting cavity of the lower mold base (3). A moving groove is formed on the left and right sides of the surface of the longitudinal block (52). The bottom of the mounting cavity is provided with a circular hole, which extends downward and penetrates the translation plate (2). The driving component includes four guide pillars with a rectangular structure fixed in the mounting cavity. The four guide pillars are slidably sleeved with a lifting plate (53). The lifting plate (53) is provided with four push rods (55). The push rods (55) extend into the moving groove. The lifting plate (53) is fixed with a lifting rod (54). The lifting rod (54) passes through the circular hole and is placed below the translation plate (2). The lifting rod (54) is fixed below the lifting rod (54). The driving frame (12) is provided with a driving groove. The driving rod (541) slides into the driving groove. The pushing structure (6) includes a pushing plate (61) that is slidably placed above the lower template (4). The front and rear sides of the lower end of the pushing plate (61) are respectively fixed with horizontal sliders (611). The horizontal sliders (611) are slidably inserted into the horizontal groove (43). The bottom end of the horizontal sliders (611) is fixed with a horizontal block (62). The horizontal block (62) is slidably placed in the mounting cavity of the lower mold base (3). The horizontal block (62) forms a pushing groove through the front and rear. The two pushing rods (55) on the right side are extended to form an extension rod (63). A drive roller (631) is provided on the extension rod (63). The drive roller (631) is slidably inserted into the pushing groove. A top plate (7) is fixed above the base (1) by four columns (14). A hydraulic cylinder (8) is fixed above the top plate (7). The push rod of the hydraulic cylinder (8) passes through the top plate (7) and is placed below the top plate (7). The bottom end of the push rod of the hydraulic cylinder (8) is fixed with an upper mold base.

2. The in-mold stamping equipment for copper busbars of a new energy vehicle electrical control box according to claim 1, characterized in that, The drive slot includes an upper horizontal slot (121) located above the front side of the drive frame (12) and a lower horizontal slot (123) located below the rear side of the drive frame (12). The upper horizontal slot (121) and the lower horizontal slot (123) are connected by a lower inclined slot (122), and the upper horizontal slot (121) and the lower horizontal slot (123) are designed to be parallel to each other.

3. The in-mold stamping equipment for copper busbars of a new energy vehicle electrical control box according to claim 1, characterized in that, The moving groove includes a vertically arranged holding groove (522), and the top of the holding groove (522) is provided with an inclined offset groove (521). The distance between the top of the offset groove (521) and the copper busbar is greater than the distance between the bottom of the offset groove (521) and the copper busbar.

4. The in-mold stamping equipment for copper busbars of a new energy vehicle electrical control box according to claim 1, characterized in that, The pushing groove includes an upper vertical groove (621) located at the top of the horizontal block (62), an approach groove (622) inclined to the lower right is provided at the lower end of the upper vertical groove (621), a distance groove (623) inclined to the lower left is provided at the lower end of the approach groove (622), and a lower vertical groove (624) is provided at the lower end of the distance groove (623).

5. The in-mold stamping equipment for copper busbars of a new energy vehicle electrical control box according to claim 1, characterized in that, The upper mold base includes a lifting seat (81) that is slidably disposed between four columns (14). The upper end of the lifting seat (81) is fixed to the bottom end of the push rod of the hydraulic cylinder (8). The lower end of the lifting seat (81) is fixed with a fixed seat (82). A bending head (84) is installed on the fixed seat (82), and the bending head (84) is located above the bending notch (44). Two sets of clamping components (83) are fixed below the fixed base (82). The two clamping components (83) are located above the copper busbar. The clamping component (83) includes a lifting sleeve (831) fixed below the fixed base (82). The bottom end of the lifting sleeve (831) is provided with a lifting cavity with a convex structure. A clamping block (833) with an I-shaped structure is slidably inserted into the lifting cavity. A lifting spring (832) is provided in the lifting cavity. The upper and lower ends of the lifting spring (832) abut against the clamping block (833) and the top end of the lifting cavity, respectively.

6. A method for in-mold stamping equipment for copper busbars of new energy vehicle electrical control boxes according to any one of claims 1-5, characterized in that, Includes the following steps: S1, the extension of the push rod of the cylinder (13) causes the translation plate (2) to move forward along the straight track (11). The translation plate (2) is at the frontmost position. The two guide rollers (51) on the left and the two guide rollers (51) on the right of the translation plate (2) are far apart from each other. The push plate (61) is at the rightmost end. S2. The copper busbar to be bent is placed above the lower template (4) and placed in the space formed by the four guide rollers (51), the positioning block (41) and the push plate (61); S3, the cylinder (13) push rod retracts, causing the translation plate (2) to move the lower template (4) and the copper busbar to be punched and bent located above the lower template (4) to the lower mold base; S4. Start the hydraulic cylinder (8). The hydraulic cylinder (8) causes the upper mold base to move downward and punch and bend the copper busbar below. Then the upper mold base returns to its original position under the action of the hydraulic cylinder (8). S5. The cylinder (13) pushes the translation plate (2) to move the lower template (4) to the front, removes the stamped and bent copper busbar, and places a new copper busbar to be stamped. Repeat the above operation.

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