A copper bar twisting and bending die

Abstract

The utility model provides a kind of copper bar twist bending mould, to solve the problem of copper bar twist bending mould and twist bending method of prior art with low precision, low efficiency, high scrap rate. The utility model includes upper die, lower die, profiling cavity and limit cavity. The utility model realizes three-dimensional curved surface accurate guidance by profiling cavity, ensures twist bending shape consistency, eliminates manual error. By limit cavity, long material is eliminated, material accumulation wrinkle is avoided, and product pass rate is improved. By anti-skid line, the forming process is stable, and there is no deviation. Efficient and flexible: the punch closing height stepless angle adjustment, a set of mould can realize the twist bending of any angle in continuous angle range, without replacing mould, single-piece processing time is reduced. Modular design replaces the pressing block of different contour by quick replacement, a set of mould base body can be adapted to multiple specifications of copper bar, and the change time is shortened. Positioning device ensures quick and accurate positioning, and reduces auxiliary time.

Description

Technical Field

[0001] This utility model relates to the technical field of copper busbar bending processing equipment, and in particular to a copper busbar bending mold. Background Technology

[0002] In motor manufacturing, the bent copper busbar is one of the core components, and its performance directly affects the overall operating efficiency and reliability of the motor. Traditional copper busbar bending methods often suffer from low precision, low efficiency, and high scrap rates, making it difficult to meet the demands of modern motor manufacturing for high precision, high efficiency, and low cost. Therefore, developing a new type of copper busbar bending mold is of great significance for improving the production efficiency and product quality of bent copper busbars. Summary of the Invention

[0003] This application addresses the shortcomings of the prior art by providing a copper busbar bending mold. It achieves precise guidance of the three-dimensional curved surface through a contoured cavity, ensuring consistent bending shape and eliminating manual errors. The limiting cavity prevents long materials from accumulating and wrinkling, improving product yield. Anti-slip textured surfaces ensure stable forming process without deviation.

[0004] The technical solution adopted in this utility model is as follows: A copper busbar bending die, comprising: The upper mold includes an upper clamping plate and a twisted upper pressing block fixed below the upper clamping plate; The lower mold includes a lower template and a twisted pressing block fixed above the lower template; The upper and lower bending pressure blocks are arranged opposite to each other, and together they form a contour cavity that matches the bending shape of the target copper busbar. The lower template is provided with a limiting cavity for limiting the length of the copper busbar, and the length of the limiting cavity is equal to the preset length of the target copper busbar. The mold is configured to control the bending angle of the copper busbar by dynamically adjusting the closing height of the punch press.

[0005] Furthermore, the contour of the contoured cavity perfectly matches the three-dimensional curved surface of the copper busbar after bending, and the surface of the cavity is provided with anti-slip texture.

[0006] Furthermore, the limiting cavity is located on the feeding side of the twisted pressing block, and its inner wall contacts the end of the copper busbar to achieve length limiting.

[0007] Furthermore, it also includes a bending mold for positioning the copper busbar, which is set on the lower template and includes adjustable lateral positioning blocks and end baffles for fixing the initial position of the copper busbar.

[0008] Furthermore, the upper twisted pressing block and the upper clamping plate, as well as the lower twisted pressing block and the lower template, are connected by detachable fastening modules, which include replacement pressing blocks of different sizes.

[0009] The advantages of this utility model over the prior art are as follows: High precision and high quality: The contoured cavity enables precise guidance of the three-dimensional curved surface, ensuring the consistency of the bending shape and eliminating manual errors; the limiting cavity prevents long materials from accumulating and wrinkling, thus improving the product qualification rate; and the anti-slip texture ensures a stable molding process without deviation.

[0010] High efficiency and flexibility: The punch press closing height is infinitely adjustable, and a single set of dies can achieve bending at any angle within a continuous angle range without changing dies, reducing processing time per piece. Modular design allows for quick replacement of different profiled forming blocks, and a single die base can accommodate various specifications of copper busbars, shortening changeover time. The positioning device ensures fast and accurate positioning, reducing auxiliary time. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the contour cavity structure in this utility model.

[0012] The components include: 1. Upper clamping plate; 2. Upper pressing block; 3. Lower template; 4. Twisted pressing block; 5. Contouring cavity; 6. Limiting cavity; 71. Lateral positioning block; 72. End baffle; 8. Detachable fastening module; 10. Copper busbar. Detailed Implementation

[0013] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0014] like Figures 1 to 2 As shown, a copper busbar 10 bending die mainly includes the following structure: Upper mold component: Upper clamping plate 1: Used to connect the punch press slide and transmit punching force.

[0015] Twisted upper pressing block 2: fixed below the upper clamping plate 1, its working surface is provided with a cavity curved surface that matches the upper half of the target twisted shape of the copper busbar 10.

[0016] Lower mold assembly: Lower template 3: Fixed on the punch press worktable to provide a support reference.

[0017] Twisted pressing block 4: Fixed above the lower template, its working surface is provided with a cavity surface that matches the lower half of the target twisted shape of the copper busbar 10.

[0018] The contoured cavity 5 is formed by the upper bending pressing block 2 and the lower bending pressing block 4 arranged opposite each other. The contour of this cavity perfectly matches the three-dimensional curved surface of the target copper busbar 10 after bending, and is used to precisely guide the copper busbar 10 to twist and deform along a predetermined trajectory during the pressing process. Preferably, the surface of the cavity is processed with anti-slip textures (such as grid patterns or knurling) to increase friction and prevent the copper busbar 10 from slipping and shifting during bending.

[0019] Limiting cavity 6: Located on the lower template 3. Its key feature is that the length of the cavity is strictly equal to the preset length of the target copper busbar 10. When the copper busbar 10 is placed, its end abuts against the inner wall of the cavity, ensuring that the length of the copper busbar 10 placed in the mold is accurate, thus avoiding molding defects caused by "long material" from the source.

[0020] Angle adjustment mechanism: The mold controls the final bending angle of the copper busbar 10 by dynamically adjusting the closing height of the punch press. When the closing height of the punch press is lowered, the downward stroke of the upper die increases, and the angle of the copper busbar 10 being forcibly twisted and deformed in the contour cavity 5 (5) increases; conversely, the angle decreases. This achieves stepless continuous angle control, replacing the traditional fixed angle module.

[0021] Positioning device: Installed on the lower template 3, used to precisely fix the initial position of the copper busbar 10. It includes: Adjustable lateral positioning block 71: usually L-shaped or block-shaped, fixed in the groove of the lower template 3 by bolts, the position can be adjusted according to the width of the copper busbar 10, restricting the left and right movement of the copper busbar 10.

[0022] End baffle 72: Located at the feed end, it cooperates with the limiting cavity 6 to ensure that the end of the copper busbar 10 accurately abuts against the limiting surface.

[0023] Detachable fastening module 8: Used to enable quick replacement of the forming block, improving mold adaptability. Specifically: The upper bending pressing block 2 and the upper clamping plate 1, as well as the lower bending pressing block 4 and the lower template 3, are connected by detachable fastening modules 8 (such as high-strength bolts, hydraulic locking mechanisms or wedge-shaped locking blocks).

[0024] The fastening module comes with replacement molding blocks of different sizes and cavity profiles (i.e., upper twisted molding block 2 and lower twisted molding block 4 of different specifications). By replacing the molding blocks, copper busbars 10 with different cross-sectional dimensions, twisting radii and angles can be adapted.

[0025] Working principle of the invention: Placement and positioning: Place the copper busbar 10 to be processed into the limiting cavity 6 of the lower template 3, ensuring that one end of it is tightly against the limiting surface. At the same time, use the lateral positioning block 71 and the end baffle 72 of the positioning device to fix its initial position. The limiting cavity 6 precisely controls the length of the copper busbar 10.

[0026] Angle setting: Precisely adjust the closing height of the punch press according to the target bending angle.

[0027] Twisting Forming: Start the punch press and drive the upper die (or lower die, depending on the type of punch press) to move downwards (or upwards). The upper twisting pressure block 2 and the lower twisting pressure block 4 gradually close. The copper busbar 10 is forced to twist and deform according to the predetermined three-dimensional trajectory of the cavity within the closed contour cavity 5. The anti-slip texture on the cavity surface effectively prevents slippage.

[0028] Angle control and removal: When the punch press reaches the set closing height, the bending angle of the copper busbar 10 reaches the target value. The punch press stops and returns, the die opens, and the precisely formed bent copper busbar 10 is removed.

[0029] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A copper busbar bending die, characterized in that, include: The upper mold includes an upper clamping plate (1) and a twisted upper pressing block (2) fixed below the upper clamping plate (1). The lower mold includes a lower template (3) and a twisted pressing block (4) fixed above the lower template (3); The upper bending pressing block (2) and the lower bending pressing block (4) are arranged opposite to each other, and together they form a contour cavity (5) that matches the bending shape of the target copper busbar (10). The lower template (3) is provided with a limiting cavity (6) for limiting the length of the copper busbar (10), and the length of the limiting cavity (6) is equal to the preset length of the target copper busbar (10); The mold is configured to control the bending angle of the copper busbar (10) by dynamically adjusting the closing height of the punch press.

2. The copper busbar bending die according to claim 1, characterized in that: The contour of the contoured cavity (5) is completely aligned with the three-dimensional curved surface of the copper busbar (10) after bending, and the surface of the cavity is provided with anti-slip texture.

3. The copper busbar bending die according to claim 1, characterized in that: The limiting cavity (6) is located on the feeding side of the twisted pressing block (4), and its inner wall contacts the end of the copper busbar (10) to achieve length limiting.

4. The copper busbar bending die according to claim 1, characterized in that: It also includes a positioning device for positioning the copper busbar (10), which is set on the lower template (3) and includes an adjustable lateral positioning block (71) and an end baffle (72) for fixing the initial position of the copper busbar (10).

5. The copper busbar bending die according to claim 1, characterized in that: The upper twisted pressing block (2) and the upper clamping plate (1), as well as the lower twisted pressing block (4) and the lower template (3), are connected by a detachable fastening module (8), which includes replacement pressing blocks of different sizes.

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