Bending copper bar thinning and punching die

Abstract

This application discloses a thinning and punching die for bent copper busbars, comprising an upper die and a lower die. The upper die includes, from top to bottom, an upper die top plate, an upper die middle plate, an upper die mounting plate, an upper die pressure plate, and a thinning punch and a punch mounted on the upper die middle plate. The lower die includes a lower die base plate, a lower die template, and a movable support block. One side of the lower die template has a clearance opening for avoiding the vertical bending portion of the bent copper busbar. The movable support block is rotatably connected to the lower die base plate via a pivot and is located on one side of the clearance opening. The support block has an open state (rotating around an axis) and a supported state (supported at the bottom of the lower die template). During operation, by rotating the support block to the open state, the bent copper busbar can be inserted or removed without obstruction; rotating it to the supported state provides rigid reinforcement to the clearance opening area of ​​the lower die template. This invention perfectly solves the contradiction between interference in the placement of bent copper busbars and insufficient die rigidity, is easy to operate, and significantly improves processing accuracy, production efficiency, and die life.

Description

Technical Field

[0001] This application relates to the field of copper busbar processing molds, and in particular to a bending copper busbar thinning and punching mold. Background Technology

[0002] Copper busbars, as high-current conductive connection components, are widely used in high and low voltage electrical appliances, power distribution equipment, and other fields. In practical applications, copper busbars often need to be bent to meet the installation requirements of specific spaces. The bent copper busbars are usually L-shaped or other shapes with vertical bends.

[0003] In subsequent processing, these types of bent copper busbars often require thinning and punching at their ends to meet connection requirements. Currently, the industry typically uses general-purpose stamping dies to complete these processes. However, there are significant technical challenges when using existing dies to process bent copper busbars:

[0004] First, because the bent copper busbar has vertical bends, its overall structure is not a flat plate. This causes the vertical bends to interfere with the lateral structure of the lower die when it is placed into a conventional flat die, making it impossible to place it smoothly and accurately into the predetermined processing position, thus seriously affecting processing efficiency and quality.

[0005] Secondly, to address the aforementioned interference problem, existing technologies typically require a large clearance notch on the side of the lower die to allow copper to be discharged. However, this notch significantly weakens the overall structure and rigidity of the lower die. During the stamping process, especially in the thinning stage, the immense stamping force acts on the lower die area near the notch, easily causing elastic deformation or even damage in this area due to insufficient support, severely impacting the die's lifespan and machining accuracy. Utility Model Content

[0006] The purpose of this application is to provide a mold specifically for bending copper busbars, which can balance smooth loading and unloading with the structural rigidity of the mold, thereby ensuring production efficiency and processing quality.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A bending and thinning punching die for copper busbars includes an upper die and a lower die. The upper die includes an upper die top plate, an upper die middle plate, an upper die mounting plate, an upper die pressure plate, a thinning punch, and a punching punch. The upper die middle plate is mounted at the bottom of the upper die top plate, the upper die mounting plate is mounted at the bottom of the upper die middle plate, the upper die pressure plate is mounted at the bottom of the upper die mounting plate, and the thinning punch and punching punch are mounted on the upper die middle plate and extend downward. The lower die includes a lower die base plate, a lower template, and a movable support block. The lower template is fixed to the lower die base plate. The template has a clearance opening on one side to avoid the vertical bending of the copper busbar; the movable support block is rotatably connected to the bottom plate of the lower mold via a pivot and is located on one side of the clearance opening; the movable support block has an open state that rotates around the pivot and a supported state that is supported on the bottom of the lower template; when the movable support block is in the open state, its top is separated from the bottom of the lower template, forming a space for the bent copper busbar to enter; when the movable support block is rotated to the supported state, its top is supported on the bottom of the lower template, reinforcing the lower template.

[0009] Furthermore, the movable support block is a manually operated support block.

[0010] Furthermore, the rotation axis of the movable support block is parallel to the height direction of the lower template.

[0011] Furthermore, the upper die pressing plate is connected to the upper die mounting plate via an elastic element.

[0012] Furthermore, the lower template is provided with a thinning die corresponding to the thinning punch and a punching groove corresponding to the punching punch.

[0013] Furthermore, a handle is installed on the outer side of the movable support block.

[0014] The beneficial effects of this application are as follows:

[0015] This application solves the long-standing problem of interference and rigidity contradiction in the processing of bent copper busbars by setting an avoidance opening in the lower template and hinged a rotatable movable support block below it. Specifically, when the movable support block is in the open state, the space formed by its separation from the bottom of the lower template can completely avoid the vertical bending part of the bent copper busbar, allowing the workpiece to be put in or taken out without obstruction, greatly facilitating loading and unloading operations. When rotated to the supported state, the support block can accurately and stably support the bottom of the lower template at the avoidance opening, effectively compensating for the structural weakening caused by the avoidance opening, providing sufficient rigidity support for the stamping process (especially the thinning process), thereby significantly improving processing accuracy, ensuring product quality, and extending the service life of the mold. This ingenious structural design and simple operation achieve a balance between convenience and reliability. Attached Figure Description

[0016] Figure 1 A top view of the lower die of a bending copper busbar thinning and punching die provided in an embodiment of this application;

[0017] Figure 2 This is a front view of the lower die of a bending copper busbar thinning and punching die provided in an embodiment of this application;

[0018] Figure 3 This is a physical image of a copper busbar bending and thinning die after the upper and lower dies have been separated, according to an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] 11. Upper die top plate; 12. Upper die middle plate; 13. Upper die mounting plate; 14. Upper die pressure plate; 15. Thinning punch; 16. Punching punch;

[0021] 21. Lower mold base plate; 22. Lower template; 23. Movable support block; 24. Rotating shaft; 25. Thinning die; 26. Punching groove;

[0022] 221. Avoidance lane;

[0023] 231. Handle; Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," etc., are used only for the convenience of describing this application and for 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, and therefore should not be construed as a limitation on this application. In particular, the understanding of the term "upper" following a noun in the claims should be understood as meaning that the entire inner and outer surfaces of the structure referred to by the noun conform to the definition of "upper."

[0026] The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation methods, structures, features, and effects provided in this application.

[0027] like Figures 1 to 3As shown, a bending copper busbar Q-thinning and punching die includes an upper die and a lower die. The upper die includes an upper die top plate 11, an upper die middle plate 12, an upper die mounting plate 13, an upper die pressure plate 14, a thinning punch 15, and a punching punch 16. The upper die middle plate 12 is mounted on the bottom of the upper die top plate 11, the upper die mounting plate 13 is mounted on the bottom of the upper die middle plate 12, the upper die pressure plate 14 is mounted on the bottom of the upper die mounting plate 13, and the thinning punch 15 and the punching punch 16 are mounted on the upper die middle plate 12 and extend downward. The lower die includes a lower die base plate 21, a lower template 22, and a movable support block 23. The lower template 22 is fixed to the lower die base plate. On the upper part of the mold plate 21, the lower mold plate 22 has a clearance opening 221 on one side to avoid the vertical bending part of the bent copper busbar; the movable support block 23 is rotatably connected to the lower mold base plate 21 through a rotating shaft 24 and is located on one side of the clearance opening 221; the movable support block 23 has an open state that rotates around the rotating shaft 24 and a supported state that is supported on the bottom of the lower mold plate 22; when the movable support block 23 is in the open state, its top is separated from the bottom of the lower mold plate 22, forming a space for the bent copper busbar to enter; when the movable support block 23 is rotated to the supported state, its top is supported on the bottom of the lower mold plate 22, reinforcing the lower mold plate 22.

[0028] Furthermore, the movable support block 23 is a manually operated support block. It is manually operated, has a simple and reliable structure, low manufacturing cost, and requires no complex power source or control system, making maintenance easy.

[0029] Furthermore, the rotation axis 24 of the movable support block 23 is parallel to the height direction of the lower template 22. This rotation direction allows the support block to efficiently make way for the space below the clearance opening 221 when it is opened, and to stably provide vertical support when it is closed, thus optimizing the movement trajectory.

[0030] Furthermore, the upper die pressure plate 14 is connected to the upper die mounting plate 13 via an elastic element. The elastic pressure plate can clamp the workpiece before punching, preventing the copper busbar from shifting during processing, thereby ensuring the accuracy and quality of thinning and punching.

[0031] Furthermore, the lower template 22 is provided with a thinning die 25 corresponding to the thinning punch 15 and a punching groove 26 corresponding to the punching punch 16.

[0032] Furthermore, a handle 231 is installed on the outer side of the movable support block 23. The dedicated handle 231 greatly facilitates the operator to quickly and effortlessly rotate and switch the support block state, improving operational convenience and production efficiency.

[0033] The working principle of this application is as follows: During processing, the movable support block 23 is first manually rotated to the open state, so that its top is separated from the bottom of the lower template 22, at which time an unobstructed space is formed below the clearance opening 221; the operator aligns the vertical bending part of the bent copper busbar with this space, so that the horizontal part of the copper busbar is smoothly placed in the correct processing position of the lower template 22; then, the movable support block 23 is rotated back to the support state, so that its top is tightly supported at the bottom of the lower template 22 at the clearance opening 221, thus completing the rigid reinforcement of the mold; the upper mold moves downward under the drive of the press, the upper mold pressure plate 14 first presses the copper busbar, and then the thinning punch 15 and the punching punch 16 complete the thinning and punching operations of the copper busbar in sequence; after the processing is completed, the upper mold returns, and the operator opens the movable support block 23 again, so that the processed bent copper busbar can be taken out without obstruction.

[0034] The embodiments described above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A bending and thinning die for copper busbars, comprising an upper die and a lower die, characterized in that: The upper die includes an upper die top plate, an upper die middle plate, an upper die mounting plate, an upper die pressure plate, a thinning punch, and a punching punch. The upper die middle plate is mounted at the bottom of the upper die top plate, the upper die mounting plate is mounted at the bottom of the upper die middle plate, the upper die pressure plate is mounted at the bottom of the upper die mounting plate, and the thinning punch and punching punch are mounted on the upper die middle plate and extend downwards. The lower die includes a lower die bottom plate, a lower die template, and a movable support block. The lower die template is fixed to the lower die bottom plate, and one side of the lower die template has a clearance opening for avoiding the vertical bending portion of the bent copper busbar. The movable support block is rotatably connected to the lower die bottom plate via a rotating shaft and is located on one side of the clearance opening. The movable support block has an open state that rotates around the rotating shaft and a supported state that is supported at the bottom of the lower die template. When the movable support block is in the open state, its top is separated from the bottom of the lower die template, forming a space for the bent copper busbar to enter. When the movable support block rotates to the support position, its top supports the bottom of the lower template, reinforcing the lower template.

2. The bending and thinning die for copper busbars according to claim 1, characterized in that: The movable support block is a manually operated support block.

3. The bending and thinning die for copper busbars according to claim 1, characterized in that: The rotation axis of the movable support block is parallel to the height direction of the lower template.

4. The bending and thinning die for copper busbars according to claim 1, characterized in that: The upper mold pressure plate is connected to the upper mold mounting plate through an elastic element.

5. The bending and thinning die for copper busbars according to claim 1, characterized in that: The lower template is provided with a thinning die corresponding to the thinning punch and a punching groove corresponding to the punching punch.

6. The bending and thinning die for copper busbars according to claim 1, characterized in that: A handle is installed on the outside of the movable support block.

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