A thin copper sheet forming anti-wrinkle support device

Abstract

The utility model provides a kind of thin copper sheet forming anti-wrinkle supporting device, including stamping table and support shell, fixed frame body is vertically installed on the upper end of stamping table by multiple bolts, back welding frame is welded in the back of stamping table, stamping rod is installed on the upper end of back welding frame by multiple bolts, stamping rod movable end is installed with stamping plate by flange and bolt, the design solves the original forming processing device in stamping process cannot provide buffer, it is prone to the problem of insufficient support or over-supporting and tearing thin copper sheet, dynamic, adaptive buffer support structure is used in the utility model, can extremely effectively inhibit the wrinkle generation of thin copper sheet in complex forming process, significantly improve product pass rate and quality;Meanwhile, its modularization and adaptive characteristics greatly enhance the versatility of equipment, reduce the cost and time of changing mould for different products;Compact structure, easy to integrate into existing stamping production line.

Description

Technical Field

[0001] This utility model is a thin copper sheet forming anti-wrinkle support device, belonging to the field of copper sheet processing technology. Background Technology

[0002] Thin copper sheets are widely used in the stamping of electronic components, battery connectors, shielding covers, and other products due to their excellent conductivity, ductility, and plasticity. During the stamping process, the die applies pressure to the copper sheet, causing it to deform plastically. However, because copper sheets are soft and thin (typically less than 0.5 mm), they are prone to instability and defects such as wrinkles and wavy lines when subjected to uneven tensile or compressive stress. These defects not only affect the product's appearance but also impair its conductivity, mechanical strength, and service life.

[0003] For example, Chinese patent CN216606843U proposes a copper sheet forming processing device. By placing the copper plate on two second molds, sliding one of the second molds to the bottom position of the first mold, and then using a hydraulic cylinder to drive the mold core for stamping, after stamping, the insert rod is pulled out from the insert hole, pushing the other second mold to the stamping position. At the same time, the processed copper sheet and scrap are removed from the second mold used for the first time, and then a new copper plate is placed. By switching between two second molds for processing, the production efficiency is greatly improved. It is very time-saving and labor-saving to use. However, this forming processing device cannot provide buffering during the stamping process, which can easily lead to insufficient support or excessive support, causing the thin copper sheet to crack. There is an urgent need for a thin copper sheet forming anti-wrinkle support device to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a thin copper sheet forming anti-wrinkle support device to solve the problems mentioned in the background technology. This utility model provides a dynamic, adaptive, and locally adjustable buffer support structure that fits the back of the copper sheet in real time during the stamping process, effectively suppressing the generation of wrinkles.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thin copper sheet forming anti-wrinkle support device, comprising a stamping table and a support shell. A fixed frame is longitudinally mounted on the upper end of the stamping table via multiple bolts. A back welding frame is welded to the back of the stamping table. A stamping rod is mounted on the upper end of the back welding frame via multiple bolts. A stamping plate is mounted on the movable end of the stamping rod via a flange and bolts. An upper die seat is mounted on the lower end of the stamping plate via bolts. Multiple support shells are provided, arranged longitudinally inside the support shell. Each of the multiple support shells has a removable cover mounted on its lower end via bolts. A spring seat is mounted on the upper end of each of the multiple removable covers. A return spring is longitudinally mounted on the upper end of each of the multiple spring seats. A polyurethane pad is connected to the upper end of each of the multiple return springs. A support pin is connected to the upper end of each of the multiple polyurethane pads. The multiple support pins slide through the upper ends of the multiple support shells. A support piece is horizontally fixed to the upper end of each of the multiple support pins. An engineering plastic sheet is adhered to the upper end of each of the multiple support pieces. Multiple auxiliary guide rods are longitudinally welded to the lower end of each of the multiple support pieces.

[0006] Furthermore, multiple hexagonal protrusions are adhered to the lower end of the fixed frame, and hexagonal positioning holes are opened in the middle of the lower ends of the multiple removable covers, with the multiple hexagonal protrusions respectively engaging in the multiple hexagonal positioning holes.

[0007] Furthermore, cylindrical holes are provided around the upper circumference of each of the multiple support shells, and the multiple auxiliary guide rods pass through the multiple cylindrical holes respectively.

[0008] Furthermore, each of the auxiliary guide rods has a tension spring welded to its lower end, a miniature tension spring installed on the upper end of each of the tension springs, and a limit plate welded to the upper end of the interior of each of the support shells.

[0009] Furthermore, the upper ends of the multiple micro tension springs are respectively fixed to multiple limiting plates.

[0010] Furthermore, a copper sheet placement lower mold base is placed on the upper end of each of the engineering plastic sheets, and the upper mold base is located directly above the copper sheet placement lower mold base.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a thin copper sheet forming anti-wrinkle support device. Because it incorporates engineering plastic sheets, support sheets, support pins, support shells, easy-to-remove covers, hexagonal positioning holes, spring seats, return springs, polyurethane pads, auxiliary guide rods, miniature tension springs, and tension spring sheets, its structure is reasonable. The dynamic and adaptive buffer support structure effectively suppresses wrinkles in thin copper sheets during complex forming processes, significantly improving product qualification rate and quality. Simultaneously, its modularity and adaptive characteristics greatly enhance the equipment's versatility, reducing the cost and time of changing molds for different products. Its compact structure makes it easy to integrate into existing stamping production lines, making it highly practical. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of a thin copper sheet forming anti-wrinkle support device according to the present invention;

[0014] Figure 2 This is a schematic diagram of the support shell structure of a thin copper sheet forming anti-wrinkle support device according to the present invention;

[0015] Figure 3 This is a schematic cross-sectional view of the support shell structure of a thin copper sheet forming anti-wrinkle support device according to the present invention.

[0016] In the diagram: 1-Pressing table, 2-Fixed frame, 3-Back welding frame, 4-Pressing rod, 5-Pressing plate, 6-Upper mold base, 7-Engineering plastic sheet, 8-Supporting plate, 9-Supporting ejector pin, 10-Supporting shell, 11-Easy-to-remove cover, 12-Hexagonal positioning hole, 13-Spring seat, 14-Reset spring, 15-Polyurethane pad, 16-Auxiliary guide rod, 17-Miniature tension spring, 18-Tension spring sheet, 19-Copper sheet for placing the lower mold base. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1-3This utility model provides a technical solution: a thin copper sheet forming anti-wrinkle support device, including a stamping table 1 and a support shell 10. A fixed frame 2 is longitudinally installed on the upper end of the stamping table 1 by multiple bolts. A back welding frame 3 is welded to the back of the stamping table 1. A stamping rod 4 is installed on the upper end of the back welding frame 3 by multiple bolts. A stamping plate 5 is installed on the movable end of the stamping rod 4 by a flange and bolts. An upper mold base 6 is installed on the lower end of the stamping plate 5 by bolts. Multiple support shells 10 are provided, and the multiple support shells 10 are arranged longitudinally inside the support shell 10. Each of the multiple support shells 10 has a removable cover 11 installed on its lower end by bolts. The upper end of each of the multiple removable covers 11 has a removable cover 11 installed on its upper end. A spring seat 13 is installed, and a return spring 14 is longitudinally installed on the upper end of each spring seat 13. A polyurethane pad 15 is connected to the upper end of each return spring 14. A support pin 9 is connected to the upper end of each polyurethane pad 15. The support pin 9 slides through the upper end of each support shell 10. A support plate 8 is horizontally fixed to the upper end of each support pin 9. An engineering plastic sheet 7 is glued to the upper end of each support plate 8. A number of auxiliary guide rods 16 are longitudinally welded to the lower end of each support plate 8. This design solves the problem that the original forming and processing device cannot provide buffering during the stamping process, which easily leads to insufficient support or excessive support and tearing of thin copper sheets.

[0019] As the first embodiment of this utility model: multiple hexagonal protrusions are glued to the lower end of the fixed frame 2, and hexagonal positioning holes 12 are opened in the middle of the lower end of multiple removable covers 11. The multiple hexagonal protrusions are respectively inserted into the multiple hexagonal positioning holes 12. By adding multiple hexagonal protrusions and correspondingly inserting them into the hexagonal positioning holes 12 of the removable covers 11, the installation position of the removable covers 11 at the lower end of the support shell 10 can be precisely defined, so as to prevent the removable covers 11 from rotating circumferentially when the device is working (stamping vibration, reciprocating motion of the support pin 9), and to ensure that the force direction of the spring seat 13 and the return spring 14 always remains longitudinal, thus ensuring the stability of the buffer support. Moreover, the hexagonal mating structure does not require additional positioning tools, and the installation position can be quickly aligned when the removable covers 11 are disassembled and assembled.

[0020] Each of the multiple support shells 10 has cylindrical holes around its upper perimeter. Multiple auxiliary guide rods 16 pass through these cylindrical holes, forming a precision guiding system through their interaction with the holes. These guide rods, along with the main guide of the support pin 9, ensure that the support plate 8 and the engineering plastic plate 7 remain horizontal during vertical movement, preventing tilting or jamming. This is crucial for achieving uniform support force.

[0021] Multiple auxiliary guide rods 16 have tension springs 18 welded to their lower ends, and multiple tension springs 18 have miniature tension springs 17 installed at their upper ends. Multiple support shells 10 have limit plates welded to their upper interior ends. The added miniature tension springs 17 consistently provide an upward pulling force. When stamping ends and the upper die holder 6 is lifted, these tension springs assist the return spring 14, jointly ensuring that the support plate 8, support ejector pin 9, and auxiliary guide rods 16 can quickly and reliably return to their initial highest positions, ready for the next stamping.

[0022] Multiple miniature tension springs 17 are fixed at their upper ends to multiple limiting plates, thus clarifying the fixing method of the miniature tension springs 17. Their upper ends are fixed to the limiting plates inside the support shell 10, and their lower ends are connected to the auxiliary guide rod 16 via tension spring plates 18, thereby forming a complete tension path and ensuring the reliable realization of its reset function.

[0023] Multiple engineering plastic sheets 7 are each topped with a copper sheet placement lower die base 19, and an upper die base 6 is located directly above the copper sheet placement lower die base 19. The added copper sheet placement lower die base 19 provides a precise placement reference for the thin copper sheets. The contour positioning of the lower die base can prevent lateral displacement of the thin copper sheets during stamping. Furthermore, the lower die base is set in close contact with the engineering plastic sheet 7, which can evenly transfer the force on the thin copper sheet to the multiple support sheets 8 below, achieving "multi-point distributed support" and suppressing wrinkle formation. The upper die base 6 is set directly opposite to the copper sheet placement lower die base 19 to ensure that the stamping force acts vertically on the copper sheet, avoiding deformation defects caused by off-center loading.

[0024] As a second embodiment of this utility model: Before the stamping begins, all support units, under the combined action of the return spring 14 and the micro tension spring 17, have their top engineering plastic sheets 7 at the same horizontal height, forming a complete support plane. The thin copper sheet to be stamped is placed flat on the lower die base 19, and the stamping rod 4 drives the stamping plate 5 and the upper die base 6 to move downwards, stamping the thin copper sheet. During the stamping process, different areas of the thin copper sheet experience varying degrees of stretching and deformation due to the shape of the die: in areas with severe deformation and deep concavity, the downward displacement of the thin copper sheet is large, generating significant pressure on the support sheet 8 and support pin 9 below. This pressure overcomes the elasticity of the return spring 14 and compresses the polyurethane pad 15, causing the entire support assembly to retract downwards. According to Hooke's Law F=kx, the more the spring is compressed, the greater the support reaction force provided. The auxiliary guide rod 16 ensures that the support sheet sinks smoothly without tilting during this process. In areas with slight or no deformation: the downward displacement of the thin copper sheet is small or zero, and the retraction of the support units here is small or remains stationary, thus providing a smaller support reaction force. The polyurethane pad 15 acts as a buffer and distributes pressure evenly, making the change in support force smoother. When the stamping reaches the bottom dead center, the thin copper sheet completely conforms to the mold cavity. At this point, the lower support unit matrix no longer moves, and according to their final compression stroke, they provide a differently distributed support force field that perfectly matches the curved surface of the back of the thin copper sheet. This force field cleverly balances the internal stress of material flow, providing strong support to prevent wrinkling in areas where strong control of material flow is needed, and weak support to prevent cracking in areas where smooth material flow is required. After stamping, the stamping rod 4 drives the upper die holder 6 to rise. At this point, all support units lose pressure from the workpiece. Under the combined action of the push force of the return spring 14 and the pull force of the miniature tension spring 17, the support pin 9, support plate 8, and auxiliary guide rod 16 in each support unit are quickly and synchronously pushed back to their initial highest positions and are limited by the limiting plate and tension spring plate 18. At this time, the formed workpiece can be taken out and a new blank can be placed in to start the next work cycle.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A thin copper sheet forming anti-wrinkle support device, comprising a stamping table (1) and a support shell (10), characterized in that: The upper end of the stamping table (1) is longitudinally mounted with a fixed frame (2) by multiple bolts. The back of the stamping table (1) is welded with a back welding frame (3). The upper end of the back welding frame (3) is mounted with a stamping rod (4) by multiple bolts. The movable end of the stamping rod (4) is mounted with a stamping plate (5) by a flange and bolts. The lower end of the stamping plate (5) is mounted with an upper die seat (6) by bolts. Multiple support shells (10) are provided. Multiple support shells (10) are arranged longitudinally inside the support shell (10). The lower ends of multiple support shells (10) are all mounted with easy-to-remove covers (11) by bolts. 11) Each of the upper ends is equipped with a spring seat (13), and each of the multiple spring seats (13) is longitudinally equipped with a return spring (14). Each of the multiple return springs (14) is connected to a polyurethane pad (15). Each of the multiple polyurethane pads (15) is connected to a support pin (9). Each of the multiple support pins (9) slides through the upper end of the multiple support shells (10). Each of the multiple support pins (9) is horizontally fixed with a support piece (8). Each of the multiple support pieces (8) is glued with an engineering plastic piece (7). Each of the multiple support pieces (8) is longitudinally welded with multiple auxiliary guide rods (16).

2. The anti-wrinkle support device for thin copper sheet forming according to claim 1, characterized in that: The fixed frame (2) has multiple hexagonal protrusions glued to its lower interior. The lower center of each of the multiple removable covers (11) is provided with a hexagonal positioning hole (12), and the multiple hexagonal protrusions are respectively inserted into the multiple hexagonal positioning holes (12).

3. The anti-wrinkle support device for thin copper sheet forming according to claim 1, characterized in that: Each of the multiple support shells (10) has cylindrical holes around its upper end, and the multiple auxiliary guide rods (16) pass through the multiple cylindrical holes respectively.

4. The anti-wrinkle support device for thin copper sheet forming according to claim 1, characterized in that: Each of the auxiliary guide rods (16) has a tension spring (18) welded to its lower end, and each of the tension springs (18) has a miniature tension spring (17) installed on its upper end. Each of the support shells (10) has a limit plate welded to its upper interior.

5. The anti-wrinkle support device for thin copper sheet forming according to claim 4, characterized in that: The upper ends of the multiple miniature tension springs (17) are respectively fixed to multiple limiting plates.

6. The anti-wrinkle support device for thin copper sheet forming according to claim 1, characterized in that: Each of the engineering plastic sheets (7) has a copper sheet placement lower mold base (19) placed on its upper end, and the upper mold base (6) is located directly above the copper sheet placement lower mold base (19).

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