Automatic punch forming die for lithium battery module connecting piece

Abstract

The invention discloses an automatic punch forming die for a lithium battery module connecting piece, a material belt is continuously conveyed in the punch forming die, and is repeatedly closed by the punch forming die for step-by-step forming, and the punch forming die comprises a first punching section, a second punching section and a conveying mechanism; the first punching section is used for punching a material belt once or multiple times during die assembly and forming a workpiece which is completely separated from the material belt through once or multiple times of punching; the conveying mechanism is used for receiving the separated workpieces from the material belt during mold closing and conveying the workpieces to the second stamping section during mold opening; the second stamping section is configured to perform bending forming on the workpiece during die assembly; the material belt can be conveyed for continuous stamping, the stamping forming technology is ensured, meanwhile, the conveying structure and the second stamping section are used for different-position bending forming, it is avoided that force is applied to the material belt in the bending process, the material belt deviates, and the machining progress and the finished product quality are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of processing lithium battery module connectors, in particular to an automated stamping die for lithium battery module connectors. Background Art

[0002] A lithium battery module is made up of multiple single cells connected together, and the single cells need to be connected by connectors. The existing connector processing uses a stamping die to stamp the raw materials, including single stamping, placing the cut workpiece under an independent stamping die for stamping, which is time-consuming and labor-intensive, and inefficient. Most of them adopt a continuous stamping method, which conveys the material strip and continuously closes the die during the conveying process to gradually stamp the finished workpiece on the material strip. It has the advantages of high efficiency and automation. However, during the stamping process, since the entire process is continuous, each stamping will affect the position of the material strip, and this effect is continuously superimposed during the entire continuous process, which can easily cause the position of the material strip to shift, especially during the bending operation. Since part of the workpiece is connected to the material strip, it is easy to transfer the force to the connection with the material strip during bending, which may cause distortion, offset and breakage, etc., affecting the quality of the final product, and the flexibility of continuous stamping is poor. Therefore, there is an urgent need for an automated stamping die for lithium battery module connectors to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide an automated stamping die for lithium battery module connectors, which can effectively solve the problems mentioned in the above background technology.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: an automated stamping die for lithium battery module connectors, wherein the material strip is continuously conveyed in the stamping die and is formed step by step through the stamping die. The stamping die includes a first stamping section, a second stamping section, and a conveying mechanism; wherein: The first punching section is configured to punch the material strip once or multiple times when the mold is closed, and to form a workpiece completely separated from the material strip by blanking once or multiple times; The conveying mechanism is configured to receive the workpiece separated from the material belt when the mold is closed, and to convey the workpiece to the second stamping section when the mold is opened; The second punching section is configured to bend the workpiece when the mold is closed; and The first stamping section and the second stamping section are not collinear, the material strip is output by the first stamping section, and the formed workpiece is output after being bent and formed in the second stamping section.

[0005] Preferably, the position where the workpiece is completely separated from the material strip in the first punching section is defined as the cutting station; the conveying mechanism includes: A pair of sliding grooves are arranged between the cutting station and the bending station of the second punching section, and the sliding grooves are equipped with sliders that slide along the sliding grooves; A pair of clamping plates are respectively mounted on the two slide blocks, and the two clamping plates are used to clamp the workpiece detached from the material belt.

[0006] Preferably, the clamping plate is connected to the slider via a first elastic structure, and the first elastic structure tends to drive the clamping plate to move toward the other clamping plate.

[0007] Preferably, the slider is provided with a groove on the side facing the splint, and a connecting block is installed in the groove, one end of the connecting block is connected to the inner wall of the groove by a first elastic structure, and the other end is connected to the splint, or the connecting block is a telescopic structure, and a first elastic structure is provided at the telescopic end, the groove extends vertically downward to form a slide groove for the slider to move in the vertical direction, the connecting block is installed in the slide groove for sliding along the vertical direction, and the bottom of the connecting block is connected to the bottom of the slide groove by a second elastic structure.

[0008] Preferably, a support plate is installed at the bottom of the splint, and the support plate is located on one side of the center line of the splint, and the length of the support plate is not greater than half the length of the splint, and a slot is opened on the lower template of the second stamping section corresponding to the support plate, and the length of the slot is not less than the length of the support plate.

[0009] Preferably, the stamping die includes two second stamping sections; the position where the workpiece is completely separated from the material strip on the first stamping section is defined as the cutting station; the conveying mechanism includes: A pair of sliding grooves are arranged between the cutting station and the bending stations of the two second punching sections, and the sliding grooves are equipped with two groups of sliders sliding along the sliding grooves, each group of sliders including two sliders; There are two groups of splints, each group of splints includes a pair of splints, and each of the splints is installed on the corresponding slider; the two groups of sliders move independently or together, and when the mold is closed, at least one group of splints is located at the cutting station, and when the mold is opened, at least one group of splints is located at the bending station of the corresponding second stamping section.

[0010] Preferably, a stripping station is provided between the second stamping section and the cutting station, and the conveying mechanism further includes a stripping structure, which is configured to control the two clamps to move in opposite directions when the slider moves toward the cutting station and reaches the stripping station, so that the formed workpiece is detached from the clamp.

[0011] Preferably, the stripping structure includes an electric telescopic rod, the telescopic end of which is linked to the splint, and the electric telescopic rod is configured to pull the splint toward the slider only when the slider moves toward the cutting station and reaches the stripping station, and push the splint to reset when the slider leaves the stripping station.

[0012] Preferably, a guide groove is provided at the bottom of the sliding groove, and the bottom of the slider is slidably installed in the guide groove through a guide rod; the guide groove is parallel to the sliding groove, and an offset groove is provided in the guide groove and corresponding to the stripping station; both ends of the offset groove are connected to the guide groove through a guide channel, and a first guide plate and a second guide plate are respectively provided at the two guide channels in the guide groove; the initial positions of the first guide plate and the second guide plate are both located in the guide groove, and The first guide plate is close to the cutting station, the first guide plate is rotatably connected to the inner wall of the guide groove, and the first guide plate is configured to swing toward the offset groove to close the corresponding guide channel, or swing toward the guide groove to open the corresponding guide channel; The second guide plate is close to the second punching section, the second guide plate is rotatably connected to the inner wall of the guide groove, and the second guide plate is configured to swing toward the offset groove to close the corresponding guide passage.

[0013] Preferably, a swing block is installed at the die of the lower template of the second punching section, and the swing block is in a fan-shaped structure. The lower template is provided with a receiving groove at the swing block, and the receiving groove is used to provide a space for the swing block to swing. The swing block is configured to swing synchronously with the bending of the workpiece. Beneficial effects: In the present invention, the first stamping section, the second stamping section and the conveying mechanism can maintain the material strip conveying for continuous stamping, ensuring the stamping and forming process. At the same time, the conveying structure and the second stamping section are used to perform ectopic bending and forming, avoiding the application of force to the material strip during the bending process, causing the material strip to deflect and affect the stamping accuracy. In addition, the setting of the conveying structure and the second stamping section can obtain one or more formed workpieces in one stamping process according to needs, making the stamping more flexible and meeting different needs.

[0014] In addition, the conveying mechanism in the present invention can automatically take over the detached workpiece and transfer it, and cooperate with the stripping structure to automatically clamp the formed workpiece and detach it from the second stamping section during the process of the clamping plate moving back to the cutting station, and automatically release the workpiece to the stripping station, thereby further improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached figure: Figure 1 It is a structural schematic diagram of the stamping die of the present invention; Figure 2 It is a structural schematic diagram of the first stamping section and the lower die of the second stamping section of the stamping die of the present invention; Figure 3It is a structural schematic diagram of the cutting station of the stamping die of the present invention; Figure 4 It is a structural schematic diagram of the second stamping section of the present invention; Figure 5 It is a structural schematic diagram of the sliding groove part of the present invention; Figure 6 This is a detailed structural diagram of a single-sided sliding groove of the present invention; Figure 7 This invention Figure 6 Schematic diagram of the structure of area A; Figure 8 This is a schematic diagram of the structure of two clamping plates clamping a workpiece according to the present invention; Figure 9 This invention Figure 6 Schematic diagram of the structure of area B in the middle; Figure 10 It is a schematic structural diagram of the guide groove and the offset groove of the present invention; Figure 11 It is a structural schematic diagram of a slider according to an embodiment of the present invention; Figure 12 This is a schematic structural diagram of a lower swing block according to an embodiment of the present invention; Numbers in the figure: 1. first stamping section; 2. second stamping section; 31. sliding groove; 311. guide groove; 312. guide rod; 32. splint; 33. slider; 331. inner groove; 332. inner block; 333. screw; 334. screw nut; 34. first elastic structure; 35. groove; 36. connecting block; 361. first section; 362. middle section; 363. second section; 364. through hole; 37. second elastic structure; 38. support plate; 4. cutting station; 5. stripping station; 6. notch; 71. electric telescopic rod; 72. offset groove; 73. guide channel; 74. first guide plate; 75. second guide plate; 8. swing block; 9. storage slot; 10. workpiece; 11. bending station. DETAILED DESCRIPTION

[0017] The following describes the embodiments of the present invention in conjunction with the accompanying drawings. The terms used in the embodiments of the present invention are only used to explain the specific embodiments of the present invention and are not intended to limit the present invention. The following describes the embodiments of the present application in conjunction with the accompanying drawings.

[0018] Example 1, as Figure 1-Figure 5 As shown: An automated stamping die for lithium battery module connectors, including a stamping die for performing a stamping operation, wherein a material strip is continuously conveyed in the stamping die and is formed step by step through a counter-compounding die of the stamping die, the stamping die including a first stamping section 1, a second stamping section 2, and a conveying mechanism; refer to Figure 2As shown, the material strip is input from the left side of the first stamping section 1 and output from the right side of the first stamping section 1, wherein, with reference to Figure 2 As shown, one or more punching stations and a cutting station 4 are sequentially arranged on the first stamping section 1 from left to right. The first stamping section 1 is configured to punch the material strip once or multiple times when the mold is closed, and when the material strip is conveyed to the cutting station 4, a workpiece 10 completely separated from the material strip is formed by blanking, and the remaining material strip continues to be conveyed and output from the right side of the first stamping section 1. The workpiece 10 separated from the cutting station 4 is taken over by a conveying mechanism, and when the mold is opened, the conveying mechanism conveys the workpiece 10 to the bending station 11 of the second stamping section 2; the bending station 11 of the second stamping section 2 is configured to bend the workpiece 10 when the mold is closed; the first stamping section 1 and the second stamping section 2 are not collinear, and the formed workpiece 10 is bent and formed at the bending station 11 of the second stamping section 2; Among them, the number of the second punching section 2 includes 1 and two. When the number of the second punching section 2 is one, the first punching section 1 and the second punching section 2 are in a "7" shape, and the cutting station 4 is set at the corresponding corner. When the number of the second punching section 2 is two, refer to Figure 1 As shown, the two second punching sections 2 are symmetrically arranged on both sides of the first punching section 1 to form a "T" shape, and the cutting station 4 is arranged at the corresponding intersection position; In this embodiment, the first stamping section 1 and the second stamping section 2 perform the mold closing operation synchronously, and the conveying mechanism performs the transfer operation when the mold is opened; it does not affect the continuous stamping operation of the material strip conveying. At the same time, by transferring the workpiece 10 to the second stamping section 2 for the bending procedure, split bending, punching and shearing are realized, ensuring the stamping efficiency while avoiding the bending operation affecting the accuracy of the overall material strip conveying, thereby ensuring the quality of the molded parts.

[0019] For conveying mechanism: Figure 3-Figure 4 As shown, a pair of sliding grooves 31 and a pair of clamps 32 are provided on both sides of the cutting station 4; the sliding groove 31 is arranged between the cutting station 4 and the bending station 11 of the second stamping section 2; a slider 33 is installed on the sliding groove 31; the clamp 32 is connected to the corresponding slider 33, and the pair of clamps 32 forms a set of clamps for clamping the workpiece 10 detached from the cutting station 4, and slidingly transporting the workpiece 10 between the cutting station 4 and the bending station 11 of the second stamping section 2 along the sliding groove 31 through the slider 33.

[0020] During the working process: the material strip enters from one end of the first stamping section 1, and then is conveyed with the material strip to the punching station for punching operation, and after one or more punching operations, it is conveyed to the cutting station 4, and is punched at the cutting station 4 to form a workpiece 10 completely separated from the material strip. When the mold is closed, the workpiece 10 is squeezed downward by the upper mold and moved into the fixture formed by a pair of clamps 32. The two clamps 32 support the downward-moving workpiece 10, and then the slider 33 moves along the sliding groove 31 (for example, the matching structure of the electric slider 33 and the slide rail) and is conveyed to the bending station 11 of the second stamping section 2; and during the next mold closing operation, the transferred workpiece 10 is bent and formed at the bending station 11 by the second stamping section 2.

[0021] When there are two second punching sections 2, and the two second punching sections 2 can be equipped with the same or different punches and dies to achieve the same or different bending forming operations, the setting and working mode of the conveying mechanism are as follows: At least two sets of sliders 33 and clamps 32 are provided, respectively, on both sides of the cutting station 4, for cyclic transfer. When the slider 33 moves along the sliding groove 31 to transfer the workpiece 10 to the bending station 11 of the second stamping section 2 on one side, the next set of clamps 32 moves from the bending station 11 of the second stamping section 2 on the other side toward the cutting station 4, waiting for the next workpiece 10 to be transferred; When the number of the second punching section 2 is one, the setting and working mode of the conveying mechanism are as follows: A set of sliders 33 and clamping plates 32 are provided. When the sliders 33 move along the sliding grooves 31 to transfer the workpiece 10 to the bending station 11 of the second stamping section 2, the workpiece 10 is first released onto the lower die of the second stamping section 2. Then, the sliders 33 drive the clamping plates 32 to reset before closing the die, waiting for the next workpiece 10 to be transferred. The two sets of sliders 33 move independently or together, and when closing the die, at least one set of clamping plates 32 is located at the cutting station 4, and when opening the die, at least one set of clamping plates 32 is located at the corresponding bending station 11 of the second stamping section 2. Furthermore, this embodiment provides a clamping method of the clamping plate 32, which can automatically clamp the workpiece 10; Figure 6-Figure 8 As shown, a groove 35 is provided on the side of the slider 33 facing the splint 32, and a connecting block 36 is installed in the groove 35. The connecting block 36 is connected to the inner wall of the groove 35 by a first elastic structure 34. The first elastic structure 34 tends to drive the splint 32 to move toward the other splint 32; The process of automatically clamping the workpiece 10 is specifically as follows: When the workpiece 10 is completely punched out of the material strip at the cutting station 4, it moves downward under the mold closing operation and is squeezed between the two clamping plates 32. The two clamping plates 32 are pressed toward the slider 33 and compress the first elastic structure 34. The elastic force of the first elastic structure 34 keeps the workpiece 10 clamped between the two clamping plates 32. The first elastic structure 34 is a mechanism with elastic force, such as a spring. For further reference, Figure 8 As shown, the top of the clamping plate 32 can be configured as a curved surface structure to facilitate better movement of the workpiece 10 between the two clamping plates 32 .

[0022] Among them, the position of the clamping plate 32 can be set to be higher than the lower template of the second stamping section 2. When the second stamping section 2 performs mold closing stamping, the workpiece 10 is squeezed by the punch block of the upper template, so that it overcomes the elastic force of the first elastic structure 34 and detaches from the clamping plate 32 and falls into the concave mold on the lower template for bending operation, thereby realizing the detachment of the workpiece 10 from the clamping plate 32.

[0023] In this embodiment, the conveying mechanism can flexibly convey the workpiece 10, and different molded workpieces 10 can be obtained alternately in the same mold closing operation. Specifically: Since the installation positions of the connector (i.e., the formed workpiece 10) on the lithium battery are different, it is necessary to bend the connector at different positions. For example, when connecting two adjacent lithium batteries, it is generally necessary to bend the middle position of the connector. At this time, the workpiece 10 can be transferred to the corresponding middle position for bending through the conveying mechanism. When the connector is installed at the end of the lithium battery, it is generally necessary to perform eccentric bending of the connector. According to the actual eccentric position, the workpiece 10 can be transferred to the corresponding eccentric position for bending through the conveying mechanism. The traditional one-line punching, bending, and blanking cannot flexibly control the position of the workpiece 10 on the material strip. Different stamping lines need to be configured to complete the above-mentioned bending operations at different positions, which is more flexible and convenient than traditional devices.

[0024] Example 2, based on Example 1, this example provides a conveying mechanism that can perform both conveying and transfer and blanking operations; a stripping station 5 is provided between the bending station 11 and the cutting station 4 of the second stamping section 2, and the conveying mechanism also includes a stripping structure. The stripping structure is configured to control the two clamping plates 32 to move in opposite directions when the slider 33 moves toward the cutting station 4 and reaches the stripping station 5, so that the formed workpiece 10 is separated from the clamping plates 32; refer to Figure 6-Figure 8 As shown, the groove 35 in the slider 33 extends vertically downward to form a slide groove for the slider 33 to move in the vertical direction. The connecting block 36 is installed in the slide groove along the direction. The sliding of the connecting block 36 can drive the slider 33 to move in the vertical direction. Figure 7As shown, in order to improve the movement stability of the splint 32, multiple sets of slide grooves and connecting blocks 36 can be provided; wherein, the setting of the connecting blocks 36 in this embodiment is as follows: refer to Figure 7-Figure 8 As shown, the connecting block 36 includes a first section 361, an intermediate section 362 and a second section 363. The first section 361 is slidably connected to the slide groove, and the second section 363 is connected to the splint 32. The second section 363 is provided with a through hole 364 toward the side of the first section 361. One end of the intermediate section 362 is connected to the first section 361, and the other end is inserted into the through hole 364. Then the first elastic structure 34 is installed between the first section 361 and the second section 363; the first elastic structure 34 is deformed to control the spacing between the first section 361 and the second section 363, thereby driving the second section 363 and the splint 32 to move horizontally, and the first section 361 slides in the slide groove, thereby driving the second section 363 and the splint 32 to move vertically. The bottom of the connecting block 36 is connected to the bottom of the slide groove by the second elastic structure 37, and the second elastic structure 37 can control the connection block 36 to reset. The second elastic structure 37 can be connected to the first section 361 or the second section 363. The second elastic structure 37 can adopt a spring or other structure.

[0025] Based on the above, when closing the mold: The punch at the bending station 11 of the second stamping section 2 squeezes the workpiece 10. At this time, the connecting block 36 compresses the second elastic structure 37, causing the connecting block 36 to slide synchronously in the chute. At the same time, the clamping plate 32 also moves downward synchronously until the workpiece 10 falls on the lower die of the bending station 11 of the second stamping section 2. During the bending process, due to the stamping force, the workpiece 10 remains on the lower die of the bending station 11 of the second stamping section 2 for the bending operation. After the bending and stamping is completed, the upper die of the bending station 11 of the second stamping section 2 is separated from the lower die, and the connecting block 36 is automatically reset by the first elastic structure 34. At the same time, the clamping plate 32 clamps the bent workpiece 10 and automatically resets; then, as the slider 33 slides, the clamping plate 32 clamps the formed workpiece 10 and moves toward the cutting station 4. When passing through the stripping station 5, the stripping structure controls the two clamps 32 to move in opposite directions, increasing the distance between the two clamps 32. At this time, the formed workpiece 10 will automatically separate from the clamp 32 under the action of gravity to achieve stripping; then, the stripping structure controls the two clamps 32 to reset and wait for the next transfer operation.

[0026] In a specific embodiment, a structure is provided as a stripping structure, referring to Figure 6-Figure 8As shown, the stripping structure includes an electric telescopic rod 71, the telescopic end of the electric telescopic rod 71 is linked to the splint 32, and can be connected to the splint 32 through the through hole 364, or connected to the second section 363. The electric telescopic rod 71 is configured to only move when the slider 33 moves toward the cutting station 4 and reaches the stripping station 5. The action end of the electric telescopic rod 71 can pull the splint 32 toward the slider 33, and when the slider 33 leaves the stripping station 5, push the splint 32 to reset, thereby realizing the above-mentioned automatic stripping operation.

[0027] Furthermore, in this embodiment, a support plate 38 is installed at the bottom of the clamping plate 32 to prevent the workpiece 10 from accidentally detaching from the clamping plate 32 during the transfer process, thereby improving the stability of the transfer. The support plate 38 is located on one side of the center line of the clamping plate 32, and the length of the support plate 38 is not greater than half the length of the clamping plate 32, so as to support the workpiece 10 while avoiding affecting the bending operation. A slot 6 is provided on the lower template of the second punching section 2 at a position corresponding to the support plate 38, and the length of the slot 6 is not less than the length of the support plate 38. As the slider 33 passes through the clamping plate 32, the workpiece 10 is supported. The workpiece 10 is transferred to the lower template of the bending station 11 of the second stamping section 2, and when the mold is closed, the workpiece 10 and the clamping plate 32 move downward at the same time. At this time, the support plate 38 moves into the slot 6, and the slot 6 is used to provide space for detachment and downward movement; during the mold opening process, the support plate 38 can stably lift the workpiece 10 and detach it from the lower template of the second stamping section 2, wherein the stripping structure controls the moving distance of the two clamping plates 32 based on the width of the support plate 38, ensuring that the support plate 38 is detached from the workpiece 10, so that the workpiece 10 can fall smoothly.

[0028] Example 3, based on Example 2, this example provides a stripping structure that does not require electric control and can achieve automatic stripping operation, refer to Figure 4-Figure 5 and Figure 9-10 As shown, a guide groove 311 is provided at the bottom of the sliding groove 31. The bottom of the slider 33 is slidably installed in the guide groove 311 through a guide rod 312. The guide groove 311 is parallel to the sliding groove 31. An offset groove 72 is provided in the guide groove 311 and corresponding to the stripping station 5. Both ends of the offset groove 72 are connected to the guide groove 311 through guide channels 73. A first guide plate 74 and a second guide plate 75 are respectively provided in the two guide channels 73 in the guide groove 311. The first guide plate 74 is close to the cutting station 4 and is rotatably connected to the inner wall of the guide groove 311. The first guide plate 74 is configured to swing toward the offset groove 72 to close the corresponding guide channel 73, or swing toward the guide groove 311 to open the corresponding guide channel 73. The second guide plate 75 is close to the second punching section 2 , and is rotatably connected to the inner wall of the guide groove 311 . The second guide plate 75 is configured to swing toward the offset groove 72 to close the corresponding guide channel 73 .

[0029] by Figure 10 For example, from left to right, it is the cutting station 4 to the bending station 11 of the second punching section 2, the initial positions of the first guide plate 74 and the second guide plate 75 are both in the guide groove 311, and can be pressed Figure 10 The slider 33 moves to the right along the sliding groove 31, and the guide rod 312 slides to the right along the guide groove 311 synchronously until it moves to the first guide plate 74, which pushes the first guide plate 74 to swing toward the offset groove 72, closing the guide channel 73 there. The slider 33 continues to move along the sliding groove 31, and the guide rod 312 continues to slide to the right along the guide groove 311 synchronously. At this time, the first guide plate 74 is reset (i.e., Figure 10 The position shown is the initial position of the first guide plate 74. For example, by providing a return spring, a torsion spring, or other structure, as the slider 33 continues to move, it reaches the second guide plate 75. Similarly, the second guide plate 75 swings toward the offset groove 72, closing the guide channel 73 there. The slider 33 continues to move along the sliding groove 31, and the guide rod 312 synchronously slides rightward along the guide groove 311. In this direction, the slider 33 does not deflect. The initial position of the second guide plate 75 is similar to that of the first guide plate 74, and the reset method is the same. After the cam 31 is in the unlocking state, the guide groove 311 is unlocked, and the guide groove 311 is unlocked, so that the cam 31 is unlocked and the guide groove 312 is unlocked.

[0030] In one embodiment, a method for mounting the slider 33 and the sliding groove 31 is provided so that the slider 33 can move along the sliding groove 31 and can also slide along the offset groove 72 alone. refer to Figure 6 and Figure 11As shown, a screw rod 333 can be provided in the sliding groove 31 to drive the slider 33: an inner groove 331 for the slider 33 to be offset is provided at a suitable position in the slider 33, and an inner block 332 is slidably installed in the inner groove 331, and the inner block 332 is engaged with the screw rod 333 through the screw nut 334. The rotation of the screw rod 333 can drive the inner block 332 to move, and the inner block 332 drives the slider 33 to move synchronously along the sliding groove 31. At the same time, the inner block 332 and the slider 33 are set to slide in a direction perpendicular to the sliding groove 31, providing space for the slider 33 to enter the offset groove 72; the structure for realizing the sliding and offsetting of the slider 33 is not limited to the above; it also includes the use of other existing structures, such as providing a driving wheel under the guide rod 312 of the slider 33; the driving wheel can move along the driving wheel, thereby driving the slider 33 to slide and offset.

[0031] Example 3, based on Example 1, 2 or 3, refer to Figure 12 As shown, in this embodiment, a swing block 8 is installed at the die of the lower template of the second punching section 2. The swing block 8 has a fan-shaped structure. The lower template is provided with a receiving groove 9 at the swing block 8. The receiving groove 9 is used to provide a space for the swing block 8 to swing. The swing block 8 is configured to swing synchronously with the bending of the workpiece 10. Figure 12 The virtual fan-shaped structure on the left side is a schematic diagram of the swinging of the swing block 8. During the bending process, the workpiece 10 is supported by the swing block 8, and when the mold is closed for stamping, the swing block 8 swings synchronously to guide the workpiece 10 to bend, thereby reducing the relative sliding between the workpiece 10 and the die during bending, thereby reducing scratches on the surface of the workpiece 10 caused by relative sliding and improving the quality of the workpiece 10. When the mold is opened, the swing block 8 can automatically reset by setting an elastic part, such as a torsion spring. When the clamping plate 32 drives the workpiece 10 to move upward, the swing block 8 can automatically reset.

[0032] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. After knowing the contents described in the present invention, ordinary technicians in this technical field can make several equivalent changes and substitutions without departing from the principles of the present invention. These equivalent changes and substitutions should also be regarded as falling within the scope of protection of the present invention.

Claims

1. An automated stamping die for lithium battery module connectors, wherein the material strip is continuously conveyed in the stamping die and is formed step by step by the back-molding of the stamping die, characterized in that: The stamping die comprises a first stamping section, a second stamping section and a conveying mechanism; wherein: The first punching section is configured to punch the material strip once or multiple times when the mold is closed, and to form a workpiece completely separated from the material strip by blanking once or multiple times; The conveying mechanism is configured to receive the workpiece separated from the material belt when the mold is closed, and to convey the workpiece to the second stamping section when the mold is opened; The second punching section is configured to bend the workpiece when the mold is closed; and The first stamping section and the second stamping section are not collinear, the material strip is output by the first stamping section, and the formed workpiece is output after being bent and formed in the second stamping section.

2. The automated stamping die for lithium battery module connectors according to claim 1, characterized in that: The position where the workpiece is completely separated from the material strip in the first punching section is defined as the cutting station; the conveying mechanism includes: A pair of sliding grooves are arranged between the cutting station and the bending station of the second punching section, and the sliding grooves are equipped with sliders that slide along the sliding grooves; A pair of clamping plates are respectively mounted on the two slide blocks, and the two clamping plates are used to clamp the workpiece detached from the material belt.

3. The automated stamping die for lithium battery module connectors according to claim 2, characterized in that: The clamping plate is connected to the slider via a first elastic structure, and the first elastic structure tends to drive the clamping plate to move toward the other clamping plate.

4. The automated stamping die for lithium battery module connectors according to claim 3, characterized in that: The slider is provided with a groove on the side facing the splint, and a connecting block is installed in the groove. One end of the connecting block is connected to the inner wall of the groove by a first elastic structure, and the other end is connected to the splint, or the connecting block is a telescopic structure, and a first elastic structure is provided at the telescopic end. The groove extends vertically downward to form a slide groove for the slider to move in the vertical direction. The connecting block is installed in the slide groove for sliding along the vertical direction, and the bottom of the connecting block is connected to the bottom of the slide groove by a second elastic structure.

5. An automated stamping die for lithium battery module connectors according to any one of claims 2 to 4, characterized in that: A support plate is installed at the bottom of the splint, and the support plate is located on one side of the center line of the splint, and the length of the support plate is not greater than half the length of the splint, and a slot is opened on the lower template of the second stamping section corresponding to the support plate, and the length of the slot is not less than the length of the support plate.

6. The automated stamping die for lithium battery module connectors according to claim 1, characterized in that: The stamping die includes two second stamping sections; the position where the workpiece is completely separated from the material strip on the first stamping section is defined as the cutting station; the conveying mechanism includes: A pair of sliding grooves are arranged between the cutting station and the bending stations of the two second punching sections, and the sliding grooves are equipped with two groups of sliders sliding along the sliding grooves, each group of sliders including two sliders; There are two groups of splints, each group of splints includes a pair of splints, and each of the splints is installed on the corresponding slider; the two groups of sliders move independently or together, and when the mold is closed, at least one group of splints is located at the cutting station, and when the mold is opened, at least one group of splints is located at the corresponding second stamping section.

7. The automated stamping die for lithium battery module connectors according to claim 2, characterized in that: A stripping station is provided between the second stamping section and the cutting station. The conveying mechanism also includes a stripping structure. The stripping structure is configured to control the two clamps to move in opposite directions when the slider moves toward the cutting station and reaches the stripping station, so that the formed workpiece is detached from the clamp.

8. The automated stamping die for lithium battery module connectors according to claim 7, characterized in that: The stripping structure includes an electric telescopic rod, the telescopic end of which is linked to the splint. The electric telescopic rod is configured to pull the splint toward the slider only when the slider moves toward the cutting station and reaches the stripping station, and push the splint to reset when the slider leaves the stripping station.

9. The automated stamping die for lithium battery module connectors according to claim 7, characterized in that: A guide groove is provided at the bottom of the sliding groove, and the bottom of the slider is slidably installed in the guide groove through a guide rod; the guide groove is parallel to the sliding groove, and an offset groove is provided in the guide groove and corresponding to the stripping station; both ends of the offset groove are connected to the guide groove through a guide channel, and a first guide plate and a second guide plate are respectively provided at the two guide channels in the guide groove; the initial positions of the first guide plate and the second guide plate are both located in the guide groove, and The first guide plate is close to the cutting station, the first guide plate is rotatably connected to the inner wall of the guide groove, and the first guide plate is configured to swing toward the offset groove to close the corresponding guide channel, or swing toward the guide groove to open the corresponding guide channel; The second guide plate is close to the second punching section, the second guide plate is rotatably connected to the inner wall of the guide groove, and the second guide plate is configured to swing toward the offset groove to close the corresponding guide passage.

10. The automated stamping die for lithium battery module connectors according to claim 1, characterized in that: A swing block is installed at the die on the lower template of the second stamping section. The swing block has a fan-shaped structure. The lower template is provided with a receiving groove at the swing block. The receiving groove is used to provide space for the swing block to swing. The swing block is configured to swing synchronously with the bending of the workpiece.

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