Punching and overturning integrated composite punching die structure

Abstract

The utility model discloses a punching and overturning integrated composite punching die structure, and belongs to the technical field of punching. The defects that in the prior art, a punch of a traditional punching and turning integrated composite punching die is difficult to replace, and waste is improperly treated are overcome. A main body structure of the punching die comprises an upper die plate and a lower die plate, at least one pressing mechanism is arranged on the upper die plate, a hole flanging mechanism and at least one punching mechanism are arranged between the upper die plate and the lower die plate, and the hole flanging mechanism and the punching mechanism are the same in structure and each comprise a punch assembly installed on the upper die plate and a female die assembly installed on the lower die plate. The punch assembly comprises a punch, a first punch fixing plate installed on the lower end face of the upper die plate and a second punch fixing plate installed on the first punch fixing plate, and the punch is installed on the second punch fixing plate through a punch quick-changing mechanism. The device is mainly used for carrying out multiple hole flanging on thin plates and medium-thickness plates and conical counter bore parts.

Description

Technical Field

[0001] This utility model belongs to the field of stamping technology, and more specifically, it relates to a composite stamping die structure that integrates stamping and turning. Background Technology

[0002] With the development of manufacturing, stamping, as an important forming method in metal processing, has been widely used in industries such as automobiles, home appliances, and electronics. Traditional stamping processes first involve punching holes, then using a single flanging die to sequentially complete the flanging process. This results in extremely low production efficiency, difficulty in matching process cycles, and significant challenges to production organization and order delivery. Therefore, to improve production efficiency and reduce process changeover time, composite stamping dies have emerged. These dies can complete multiple processes, such as punching, flanging, and bending, at a single workstation.

[0003] However, existing composite stamping dies have some shortcomings:

[0004] 1) Complex structure, inconvenient assembly and maintenance: Due to the need to integrate multiple functions, the structure of the mold is often quite complex, which not only increases the difficulty of mold design and manufacturing, but also brings inconvenience to later maintenance.

[0005] 2) Difficulty in replacing punches: In the actual production process, it may be necessary to replace punches of different sizes or shapes according to different product specifications. If punch replacement is inconvenient, it will seriously affect the flexibility and efficiency of production.

[0006] 3) Improper waste disposal: If the waste generated during the stamping process is not discharged in time, it may clog the mold, affect product quality, or even damage the equipment;

[0007] 4) Low positioning accuracy: For the processing of some precision parts, the positioning accuracy of the mold directly affects the product quality and yield.

[0008] For example, Chinese utility model patent with authorization announcement number CN 216857974 U discloses a sheet metal stamping and turning integrated stamping die. Although the lower base has a discharge hole at the bottom of the mounting groove, and the clearance hole penetrates the bottom surface of the abutment block and is connected to the discharge hole, after the punching section punches the sheet metal part, the waste material can fall from the abutment block through the clearance hole and from the discharge hole. Thus, the waste material can fall from the lower base, which is convenient for waste material discharge. However, its shortcomings are that it cannot clamp the workpiece to be stamped, which makes it easy to shift during the punching process, resulting in inaccurate positioning. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a composite stamping die structure that integrates stamping and flipping.

[0010] To achieve the above objectives, this utility model employs the following technical solution:

[0011] A composite stamping die structure integrating punching and flipping includes an upper die plate and a lower die plate. The upper die plate is provided with at least one set of clamping mechanisms. A flipping mechanism and at least one set of punching mechanisms are provided between the upper die plate and the lower die plate. The flipping mechanism and the punching mechanism have the same structure, both including a punch assembly mounted on the upper die plate and a die assembly mounted on the lower die plate. The punch assembly includes a punch, a punch fixing plate one mounted on the lower end face of the upper die plate, and a punch fixing plate two mounted on the punch fixing plate one. The punch is mounted on the punch fixing plate two through a punch quick-change mechanism.

[0012] Preferably, the die assembly includes a lower pad block mounted on the lower template, a lower pad plate mounted on the lower pad block, and a die fixing plate mounted on the lower pad plate, wherein the die fixing plate is provided with a die for cooperating with the punch.

[0013] Preferably, the clamping mechanism includes a pressure plate mounted on a punch fixing plate, and a ejector plate is mounted on the lower end of the pressure plate via a spring.

[0014] Preferably, the punch quick-change mechanism includes a detachable plate, which is mounted on the punch fixing plate by a screw. The side of the punch has a groove, and one end of the detachable plate is inserted into the groove.

[0015] Preferably, the lower end of the die is provided with a waste discharge port, which extends downward and passes through the lower pad, the lower pad block and the lower template in sequence.

[0016] Preferably, one side of the lower pad is connected to the lower template by a cylindrical pin, and the other side is connected to the lower template by a screw.

[0017] Preferably, the die fixing plate, the lower pad plate, and the lower pad block are fixedly connected by screws.

[0018] Preferably, a guide post for guiding is provided between the upper template and the lower template.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model integrates punching and flanging functions in the same mold, reducing process changeover time and significantly improving production efficiency. Compared with traditional single-function molds, composite molds can complete multiple processing steps at once, greatly shortening the production cycle.

[0021] 2. The quick-change punch mechanism allows for rapid replacement of punches of different specifications, enabling maintenance and repair of large molds without disassembly. It can adapt to the needs of products of different sizes and shapes without disassembling the entire mold, greatly improving the flexibility and response speed of the production line.

[0022] 3. The mold structure design is simple and clear. All key components, such as punch assembly and die assembly, are easy to disassemble and assemble, which facilitates daily maintenance and troubleshooting, reduces downtime and maintenance costs.

[0023] 4. By setting guide pillars between the upper and lower templates, the stability and accuracy of the mold during operation are ensured, effectively avoiding the generation of defective products caused by mold misalignment. At the same time, the design of the clamping mechanism helps to maintain the stability of the material during processing, further improving the quality of the finished product.

[0024] 5. The waste discharge port at the lower end of the die can effectively and promptly discharge the waste generated during the processing, allowing the waste material to be discharged downwards for easy collection. This prevents the accumulation of waste material from damaging the die or affecting subsequent processing, keeps the working environment clean, and also protects the safety of the operators.

[0025] In summary, the integrated stamping and turning composite stamping die structure provided by this utility model achieves a significant improvement in production efficiency, effective assurance of processing quality, and effective control of manufacturing costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the punch in the punching mechanism of this utility model;

[0028] Figure 3 This is a schematic diagram of the punch in the hole-flipping mechanism of this utility model.

[0029] In the diagram: 1. Lower template; 2. Scrap discharge port; 3. Cylindrical pin; 4. Screw 2; 5. Lower pad; 6. Pressure plate; 7. Screw 3; 8. Lower backing plate; 9. Die; 10. Spring; 11. Ejector plate; 12. Punch; 13. Punch fixing plate 2; 14. Punch fixing plate 1; 15. Guide post; 16. Upper template; 17. Detachable plate; 19. Plate to be punched; 20. Punching punch; 21. Die fixing plate; 22. Screw 1; 23. Groove. Detailed Implementation

[0030] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

[0031] Example 1:

[0032] like Figure 1 As shown, a composite stamping die structure integrating punching and flipping includes an upper template 16 and a lower template 1. At least one set of clamping mechanisms is provided on the upper template 16. A flipping mechanism and at least one set of punching mechanisms are provided between the upper template 16 and the lower template 1. The flipping mechanism and the punching mechanism have the same structure, both including a punch assembly mounted on the upper template 16 and a die assembly mounted on the lower template 1. The punch assembly includes a punch 12, a punch fixing plate 14 mounted on the lower end face of the upper template 16, and a punch fixing plate 13 mounted on the punch fixing plate 14. The punch 12 is mounted on the punch fixing plate 13 via a punch quick-change mechanism. In this utility model, the flipping mechanism and the punching mechanism have the same structure, the difference being the shape of the punch 12 in the flipping mechanism and the punching punch 20 in the punching mechanism. Figure 2 and Figure 3 The structure shown ensures that the hole-turning and punching operations are performed during operation.

[0033] Example 2:

[0034] A composite stamping die structure with integrated stamping and turning, which differs from Embodiment 1, is provided in that the die assembly includes a lower pad 5 mounted on the lower template 1, a lower pad plate 8 mounted on the lower pad 5, and a die fixing plate 21 mounted on the lower pad plate 8. The die fixing plate 21 is provided with a die 9 for cooperating with the punch 12.

[0035] Furthermore, the clamping mechanism includes a pressure plate 6 installed on the punch fixing plate 14, and a ejector plate 11 is installed at the lower end of the pressure plate 6 via a spring 10. During the downward movement of the upper template 16, the pressure plate 6 pushes the ejector plate 11 downward via the spring 10 to press and fix the sheet material 19 to be punched, ensuring the stability and accuracy of the mold during operation and effectively avoiding the generation of defective products caused by mold misalignment.

[0036] Furthermore, the quick-change punch mechanism includes a detachable plate 17, which is mounted on the punch fixing plate 13 by screw 22. A groove 23 is provided on the side of the punch 12, and one end of the detachable plate 17 is inserted into the groove 23. When it is necessary to change to a punch of a different specification, the detachable plate 17 can be removed by loosening screw 22, then the new punch 12 can be installed, the groove 23 aligned with the detachable plate 17, and the screw 22 re-secured. This allows for quick punch replacement without disassembling the entire mold.

[0037] Furthermore, the lower end of the die 9 is provided with a waste discharge port 2, which extends downward and passes through the lower pad 8, the lower pad block 5 and the lower template 1 in sequence. The waste discharge port 2 at the lower end of the die 9 can discharge the waste generated during the processing in a timely and effective manner, so as to realize the downward discharge of waste material, which is convenient for collection, prevents the accumulation of waste material from damaging the mold or affecting subsequent processing, keeps the working environment clean, and also protects the safety of the operators.

[0038] Furthermore, one side of the lower pad 5 is connected to the lower template 1 via a cylindrical pin 3, and the other side is connected to the lower template 1 via a screw 4; the die fixing plate 21, the lower pad 8, and the lower pad 5 are fixedly connected by a screw 7.

[0039] Furthermore, a guide post 15 is provided between the upper die 16 and the lower die 1 for guiding. Throughout the stamping process, the guide post 15 ensures precise alignment between the upper die 16 and the lower die 1, preventing the die from shifting during movement and ensuring processing accuracy and die life.

[0040] This utility model is mainly used for the continuous processing of sheet metal 19 to be punched, and can complete the punching and turning processes simultaneously in one stroke. The working principle of the mold is as follows:

[0041] 1. Mold closing process:

[0042] Initial position: The upper template 16 is at its highest point. At this time, there is a certain gap between the punch 12 and the die 9. The plate 19 to be punched is placed on the upper surface of the die fixing plate 21.

[0043] Downward movement: When the press drives the upper die plate 16 to move downward, the upper die plate 16 drives the punch assembly to move downward together, and the punch 12 gradually approaches the die cavity 9.

[0044] 2. Punching and flanging process:

[0045] Contact material: When the punch 12 contacts the plate 19 to be punched, it continues to move downward and presses the plate 19 into the die 9.

[0046] Shearing action: The relative movement between the punch 12 and the die 9 generates shearing force, which cuts the sheet metal 19 to be punched at a predetermined position, forming a hole;

[0047] Waste discharge: Waste generated during punching and turning is discharged through waste discharge port 2. Waste discharge port 2 passes through the lower pad plate 8, the lower pad block 5 and the lower template 1 to ensure smooth discharge of waste.

[0048] This invention achieves efficient punching and turning, enabling punching and turning to be completed in one pass, combining the two processes into one. It also features quick punch change, precise guidance, and effective waste removal, significantly improving production efficiency and processing quality.

Claims

1. A composite stamping die structure integrating stamping and turning, comprising an upper die plate (16) and a lower die plate (1), characterized in that: At least one set of clamping mechanisms are provided on the upper template (16). A flipping mechanism and at least one set of punching mechanisms are provided between the upper template (16) and the lower template (1). The flipping mechanism and the punching mechanism have the same structure, both including a punch assembly installed on the upper template (16) and a die assembly installed on the lower template (1). The punch assembly includes a punch (12), a punch fixing plate one (14) installed on the lower end face of the upper template (16), and a punch fixing plate two (13) installed on the punch fixing plate one (14). The punch (12) is installed on the punch fixing plate two (13) through a punch quick-change mechanism.

2. The integrated stamping die structure according to claim 1, characterized in that: The die assembly includes a lower pad (5) mounted on the lower template (1), a lower pad plate (8) mounted on the lower pad (5), and a die fixing plate (21) mounted on the lower pad plate (8). The die fixing plate (21) is provided with a die (9) for cooperating with the punch (12).

3. The integrated stamping die structure according to claim 2, characterized in that: The clamping mechanism includes a pressure plate (6) mounted on a punch fixing plate (14), and a ejector plate (11) is mounted on the lower end of the pressure plate (6) via a spring (10).

4. The integrated stamping die structure according to claim 3, characterized in that: The quick-change punch mechanism includes a detachable plate (17), which is mounted on the punch fixing plate (13) by screw one (22). The side of the punch (12) is provided with a groove (23), and one end of the detachable plate (17) is inserted into the groove (23).

5. The integrated stamping die structure according to any one of claims 2-4, characterized in that: The lower end of the die (9) is provided with a waste discharge port (2), which extends downward and passes through the lower pad (8), the lower pad block (5) and the lower template (1) in sequence.

6. The integrated stamping and turning composite stamping die structure according to any one of claims 2-4, characterized in that: One side of the lower pad (5) is connected to the lower template (1) by a cylindrical pin (3), and the other side is connected to the lower template (1) by a screw (4).

7. The integrated stamping die structure according to any one of claims 2-4, characterized in that: The die fixing plate (21), the lower pad plate (8) and the lower pad block (5) are fixedly connected by screws (7).

8. The integrated stamping die structure according to any one of claims 1-4, characterized in that: A guide post (15) for guiding is also provided between the upper template (16) and the lower template (1).

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