A copper bar rivet riveting die

Abstract

The application discloses a copper bar rivet pressing die, which comprises an upper die and a lower die. The upper die comprises an upper die top plate, an insert, an upper die middle plate, an upper die mounting plate, an upper die pressing plate and an upper die punch. The lower die comprises a lower die bottom plate, a lower die plate and a core pressing device. The pressing device is composed of a pressing plate, a push block, a stop block, a reset connecting rod and an elastic reset element. The innovation is that when the upper die goes down, the wedge surface at the end of the insert is inserted between the stop block and the push block, the vertical movement is converted into horizontal thrust, the pressing plate is automatically driven to press the copper bar, and accurate positioning before rivet pressing is realized. The application realizes large-tonnage and automatic pressing function through pure mechanical linkage, completely solves the quality problems caused by copper bar displacement or warping during the rivet pressing process, and significantly improves product yield and production efficiency. Meanwhile, the device is compact in structure, does not need external power, reliable in action and suitable for automatic production.

Description

Technical Field

[0001] This application relates to the field of copper busbar riveting molds, and in particular to a copper busbar rivet riveting mold. Background Technology

[0002] Copper busbars are critical conductors used in power distribution equipment to connect various electrical components. In production, multiple copper busbars or other components are often connected and fixed using rivets. Current technology commonly employs riveting dies to cold-rivet the rivets on the copper busbars on a punch press.

[0003] During the riveting process, ensuring the stable positioning of the copper busbar within the mold is crucial. If the copper busbar shifts or lifts when the punch presses down, it will lead to incomplete riveting, resulting in quality problems such as misalignment and weak crimping, severely impacting product yield. Currently, some molds use manual clamping or simple spring pressure plates for positioning, but these methods have the following inherent drawbacks:

[0004] Traditional spring pressure plates provide limited clamping force, and even when the punch applies enormous downward pressure, the copper busbar may still experience slight slippage. This clamping force may also vary throughout the stroke, failing to provide a stable and sufficient clamping force to resist the riveting impact at the moment of riveting, thus leading to riveting position deviation.

[0005] Manual clamping relies heavily on operators, which not only increases labor intensity but also significantly prolongs the production cycle time, making it difficult to integrate into automated production lines and hindering the improvement of production efficiency. Utility Model Content

[0006] The purpose of this application is to provide a copper busbar rivet pressing mold that can automatically and reliably clamp and position the copper busbar, effectively preventing it from moving during the riveting process, thereby ensuring consistent riveting quality.

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

[0008] A copper busbar rivet pressing die includes an upper die and a lower die;

[0009] The upper die includes an upper die top plate, a inserter, an upper die middle plate, an upper die mounting plate, an upper die pressure plate, and an upper die punch. The upper die middle plate is installed at the bottom of the upper die top plate. The inserter is located on one side of the upper die middle plate and is installed at the bottom of the upper die top plate. The upper die mounting plate is installed at the bottom of the upper die middle plate. The upper die pressure plate is installed at the bottom of the upper die mounting plate. The upper die punch is installed on the upper die middle plate and passes downward through the upper die pressure plate.

[0010] The lower mold includes a lower mold base plate and a lower mold template; the lower mold also includes a pressing device, the pressing device comprising:

[0011] A pressure plate is located on the side of the lower template;

[0012] A pusher block is located on the side of the pressure plate opposite to the lower template.

[0013] The stop block is fixedly installed on the lower mold and is located on the side of the push block away from the pressure plate;

[0014] The reset linkage has a first end connected to the push block and a second end passing through a through hole on the stop block and extending out of the stop block;

[0015] An elastic reset element is sleeved on the reset link, with its two ends abutting against a protrusion of the reset link and the stop block, respectively. The elastic reset element always provides the push block with a reset force away from the lower template.

[0016] The lower end of the insert is formed into a wedge-shaped surface. When the upper mold moves downward, the insert can be inserted between the stop block and the push block, and the push block is driven by the wedge-shaped surface to overcome the elastic force of the elastic reset element and move towards the lower mold plate, thereby pressing the pressure plate against the copper busbar placed on the lower mold plate.

[0017] Furthermore, the lower mold also includes a square iron and a lower mold middle plate. The square iron is disposed on the lower mold base plate, the lower mold middle plate is mounted on the square iron, and the lower template and the stop block are both mounted on the lower mold middle plate.

[0018] Furthermore, the lower mold also includes a lower mold support plate, which is installed on the lower mold middle plate and located below the lower mold template for support.

[0019] Furthermore, the elastic reset element is a spring, and the second end of the reset link is threaded and screwed with a nut. The nut and the rod portion of the reset link form the protrusion to abut against one end of the spring, and the other end of the spring abuts against the stop block.

[0020] Furthermore, the lower mold also includes a discharge device, which includes a cylinder, a lifting plate, and an ejector pin. The cylinder drives the lifting plate to move up and down, and the ejector pin is mounted on the lifting plate and can pass through the lower mold plate to eject the workpiece.

[0021] Furthermore, the number of the pressing devices is two sets, and the two sets of pressing devices are arranged opposite to each other on both sides of the lower template.

[0022] The beneficial effects of this application are as follows:

[0023] This application utilizes a mechanical pressing device driven by a cutting tool installed in the lower die. Its core principle lies in the wedge-shaped surface of the cutting tool wedging between the stop block and the push block during the downward movement of the upper die. This efficiently transforms the vertical downward movement of the upper die into the horizontal inward movement of the push block and the pressing plate, thus automatically pressing and fixing the copper busbar to the lower die from the side before the punch contacts the rivet. This pressing process is directly driven by the machine tool power, generating a huge, stable, and reliable pressing force that completely overcomes the enormous impact force generated during riveting, effectively preventing the copper busbar from moving or lifting during processing. This fundamentally ensures the accuracy of the rivet's riveting position and the stability of the riveting quality, greatly improving product yield. Simultaneously, the release and reset of this pressing device are automatically completed by springs, requiring no external power source or manual intervention. This ensures that the entire pressing and releasing process perfectly matches the stamping stroke, achieving fully automated operation. This not only significantly reduces the operator's labor intensity but also significantly shortens the processing cycle, improving production efficiency and laying a solid foundation for integrating the mold into an automated production line. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a copper busbar rivet pressing die provided in an embodiment of this application;

[0025] Figure 2 This is a cross-sectional view of the lower die of a copper busbar rivet pressing mold provided in an embodiment of this application;

[0026] Figure 3 A cross-sectional view of the lower die of a copper busbar rivet pressing mold provided in one embodiment of this application;

[0027] Explanation of reference numerals in the attached figures:

[0028] 11. Upper die top; 12. Insert cutter; 13. Upper die middle plate; 14. Upper die mounting plate; 15. Upper die pressure plate; 16. Upper die punch;

[0029] 21. Lower mold base plate; 22. Lower template; 23. Square iron; 24. Lower mold middle plate; 25. Lower mold support plate;

[0030] 31. Pressure plate; 32. Push block; 33. Stop block; 34. Reset linkage; 35. Elastic reset element;

[0031] 341. Protrusion;

[0032] 41. Cylinder; 42. Lifting plate; 43. Ejector pin; Detailed Implementation

[0033] 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.

[0034] 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."

[0035] 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.

[0036] like Figures 1 to 3 As shown, a copper busbar Q rivet W riveting die includes an upper die 1 and a lower die 2; the upper die includes an upper die top plate 11, a cutter 12, an upper die middle plate 13, an upper die mounting plate 14, an upper die pressure plate 15, and an upper die punch 16. The upper die middle plate 13 is installed at the bottom of the upper die top plate 11, the cutter 12 is located on one side of the upper die middle plate 13 and is installed at the bottom of the upper die top plate 11, the upper die mounting plate 14 is installed at the bottom of the upper die middle plate 13, the upper die pressure plate 15 is installed at the bottom of the upper die mounting plate 14, and the upper die punch 16 is installed on the upper die middle plate 13 and passes downward through the upper die pressure plate 15.

[0037] The lower mold includes a lower mold base plate 21 and a lower mold plate 22; the lower mold also includes a pressing device, which includes:

[0038] The pressure plate 31 is located on the side of the lower template 22;

[0039] Push block 32 is located on the side of the pressure plate away from the lower template 22;

[0040] The stop block 33 is fixedly installed on the lower mold and is located on the side of the push block 32 away from the pressure plate;

[0041] The reset linkage 34 has a first end connected to the push block 32 and a second end passing through the through hole on the stop block 33 and extending out of the stop block 33.

[0042] The elastic reset element 35 is sleeved on the reset link 34, and its two ends abut against a protrusion 341 of the reset link 34 and the stop block 33 respectively. The elastic reset element 35 always provides the push block 32 with a reset force away from the lower template 22.

[0043] The lower end of the inserter 12 is formed into a wedge-shaped surface. When the upper mold moves downward, the inserter 12 can be inserted between the stop block 33 and the push block 32. The wedge-shaped surface drives the push block 32 to overcome the elastic force of the elastic reset element 35 and move towards the lower template 22, thereby pressing the pressure plate 31 against the copper busbar placed on the lower template 22.

[0044] Furthermore, the lower mold also includes a square iron 23 and a lower mold middle plate 24. The square iron 23 is set on the lower mold base plate 21, and the lower mold middle plate 24 is installed on the square iron 23. The lower template 22 and the stop block 33 are both installed on the lower mold middle plate 24.

[0045] Furthermore, the lower mold also includes a lower mold support plate 25, which is installed on the lower mold middle plate 24 and located below the lower mold template 22 for support.

[0046] Furthermore, the elastic reset element 35 is a spring, and the second end of the reset link 34 is threaded and screwed with a nut. The nut and the rod part of the reset link 34 form a protrusion 341 to abut against one end of the spring, and the other end of the spring abuts against the stop block 33.

[0047] Furthermore, the lower mold also includes a discharge device, which includes a cylinder 41, a lifting plate 42, and an ejector pin 43. The cylinder 41 drives the lifting plate 42 to move up and down, and the ejector pin 43 is installed on the lifting plate 42 and can pass through the lower mold plate 22 to eject the workpiece.

[0048] Furthermore, there are two sets of pressing devices, which are arranged opposite each other on both sides of the lower template 22.

[0049] The working principle of this application is as follows:

[0050] During operation, the upper die descends with the press slide. The inserter 12, mounted on the top plate of the upper die 11, first inserts between the stop block 33 and the push block 32 of the lower die pressing device. As the upper die continues to descend, the wedge-shaped surface at the lower end of the inserter 12 contacts the push block 32 and creates a wedging effect, converting the vertical movement of the upper die into a horizontal thrust on the push block 32. This thrust drives the push block 32, the reset linkage 34, and the pressing plate to overcome the elastic force of the elastic reset element 35 and move towards the lower platen 22, thereby firmly pressing the copper busbar placed on the lower platen 22 from the side. The upper die punch 16 then contacts and rivets the rivets on the copper busbar. At this point, the copper busbar is fully constrained, effectively preventing poor riveting caused by movement or warping. After riveting is completed, the upper die rises, the insert 12 retracts, the pressing device loses its driving force, and the push block 32 and the pressing plate automatically reset under the elastic force of the elastic reset element 35, moving away from the copper busbar. Finally, the cylinder 41 of the discharge device is activated, driving the lifting plate 42 and the ejector pin 43 to rise, smoothly ejecting the riveted workpiece from the lower template 22, completing one automated work cycle.

[0051] 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 copper busbar rivet pressing die, comprising an upper die and a lower die; The upper die includes an upper die top plate, a inserter, an upper die middle plate, an upper die mounting plate, an upper die pressure plate, and an upper die punch. The upper die middle plate is installed at the bottom of the upper die top plate. The inserter is located on one side of the upper die middle plate and is installed at the bottom of the upper die top plate. The upper die mounting plate is installed at the bottom of the upper die middle plate. The upper die pressure plate is installed at the bottom of the upper die mounting plate. The upper die punch is installed on the upper die middle plate and passes downward through the upper die pressure plate. The lower mold includes a lower mold base plate and a lower mold template; characterized in that: The lower die further includes a pressing device, which includes: A pressure plate is located on the side of the lower template; A pusher block is located on the side of the pressure plate opposite to the lower template. The stop block is fixedly installed on the lower mold and is located on the side of the push block away from the pressure plate; The reset linkage has a first end connected to the push block and a second end passing through a through hole on the stop block and extending out of the stop block; An elastic reset element is sleeved on the reset link, with its two ends abutting against a protrusion of the reset link and the stop block, respectively. The elastic reset element always provides the push block with a reset force away from the lower template. The lower end of the insert is formed into a wedge-shaped surface. When the upper mold moves downward, the insert can be inserted between the stop block and the push block, and the push block is driven by the wedge-shaped surface to overcome the elastic force of the elastic reset element and move towards the lower mold plate, thereby pressing the pressure plate against the copper busbar placed on the lower mold plate.

2. The copper busbar rivet pressing die according to claim 1, characterized in that: The lower mold also includes a square iron and a lower mold middle plate. The square iron is disposed on the lower mold base plate, and the lower mold middle plate is mounted on the square iron. The lower template and the stop block are both mounted on the lower mold middle plate.

3. The copper busbar rivet pressing die according to claim 2, characterized in that: The lower mold also includes a lower mold support plate, which is installed on the middle plate of the lower mold and located below the lower mold template for support.

4. The copper busbar rivet pressing die according to claim 1, characterized in that: The elastic reset element is a spring. The second end of the reset link is threaded and screwed with a nut. The nut and the rod portion of the reset link form the protrusion to abut against one end of the spring, and the other end of the spring abuts against the stop block.

5. The copper busbar rivet pressing die according to claim 1, characterized in that: The lower mold also includes a discharge device, which includes a cylinder, a lifting plate and an ejector pin. The cylinder drives the lifting plate to move up and down, and the ejector pin is installed on the lifting plate and can pass through the lower mold to eject the workpiece.

6. The copper busbar rivet pressing die according to claim 1, characterized in that: The number of pressing devices is two sets, and the two sets of pressing devices are arranged opposite each other on both sides of the lower template.

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