Ejector rod applied to stamping die

Abstract

The utility model discloses an ejector rod applied to a stamping die in the field of ejector rods, which comprises a limiting block and a connecting block, the limiting block is positioned below the connecting block, the limiting block and the connecting block are both mounted on a lower die, a plurality of bases connected with a die bottom plate of the lower die are arranged below the limiting block, and the limiting block is positioned below the connecting block. A limiting block is arranged on the base, a plurality of guide seats connected with a die bottom plate of the lower die are arranged below the limiting block, a cylinder in sliding fit with the lower die is arranged at one end of the base, a guide column in sliding fit with the lower die is arranged at one end of each guide seat, the cylinders and the guide columns extend along the lower die, and the cylinders penetrate through the limiting block and the connecting block; according to the ejector rod applied to the stamping die, the limiting block and the connecting block are installed on the lower die, the cylinder and the guide column are limited through the limiting block and the connecting block, the stability of the cylinder and the guide column is ensured, the cylinder and the guide column are prevented from deviating in the demolding process, and the accuracy of the cylinder and the accuracy of the guide column are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of ejector pins, specifically an ejector pin used in stamping dies. Background Technology

[0002] Stamping is widely used in the production of hardware products due to its advantages such as high efficiency and high quality. Stamping dies are the direct carriers in hardware product manufacturing. Compared to other mechanical equipment, most parts of stamping dies experience relatively little wear and tear, can operate for extended periods, and have fewer malfunctions. The ejector pin, or ejector rod of the die, is a crucial component of the stamping die. It plays multiple roles in die production, ensuring rapid demolding and ejecting the hardware product using an ejection method.

[0003] Existing ejector pins also have the following defects: When ejector pins are used with stamping dies, guide grooves are usually directly opened inside the stamping die. The ejector pin is prone to a large gap with the guide groove, which affects the linear movement of the ejector pin and easily causes the ejector pin to deviate. In addition, when demolding, the ejector pin is subjected to excessive ejection force, which can also easily cause the ejector pin to deviate, reducing the stability of the ejector pin. After the ejector pin deviates, it will cause the ejector pin to deform or break during demolding, and will also cause incomplete demolding or deformation of hardware products, affecting the appearance, size and shape accuracy of hardware products, and reducing the accuracy of the ejector pin. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides an ejector pin for stamping dies, which can effectively solve the technical problem that existing ejector pins are prone to instability during demolding, resulting in displacement of the ejector pin during demolding.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a push rod applied to a stamping die, including a limiting block and a connecting block. The limiting block is located below the connecting block. Both the limiting block and the connecting block are installed on the lower die. Below the limiting block, there are several bases connected to the die base plate of the lower die. Below the limiting block, there are several guide seats connected to the die base plate of the lower die. One end of the base is provided with a cylinder that slides with the lower die. One end of the guide seat is provided with a guide post that slides with the lower die. Both the cylinder and the guide post extend along the lower die. The cylinder passes through the limiting block and the connecting block and extends out to the top of the connecting block. The guide post passes through the limiting block and extends out to the top of the limiting block. One end of the limiting block extends outward to form a limiting part. The limiting part is connected to a limiting groove formed inward by the recess of the lower die. Two long bolts are provided on the surface of the connecting block. The two long bolts are symmetrically distributed. One end of the long bolt passes through the connecting block and is threadedly connected to the lower die.

[0006] Furthermore, the cylinder is perpendicular to the bottom plate of the lower mold.

[0007] Furthermore, the guide post is perpendicular to the bottom plate of the lower mold.

[0008] Furthermore, the diameter of the cylinder is larger than the diameter of the guide post.

[0009] Furthermore, the cylinder and the guide post are of the same length.

[0010] Furthermore, the surfaces of both the cylinder and the guide post are coated with a layer of polytetrafluoroethylene using a thermal spraying process.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides an ejector pin for stamping dies. By installing a limiting block and a connecting block on the lower die, and limiting the cylinder and guide pin by the limiting block and the connecting block, the stability of the cylinder and guide pin is ensured, so that the cylinder and guide pin can slide stably along the lower die, preventing the cylinder and guide pin from shifting during the demolding process, and greatly improving the accuracy of the cylinder and guide pin. Attached Figure Description

[0012] Figure 1 This is a perspective view of an ejector pin used in a stamping die according to the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of the present invention for connecting the ejector pin to the lower die of a stamping die;

[0014] Figure 3 This is a front view of a device according to the present invention that connects an ejector pin to the lower die of a stamping mold.

[0015] Numbering on the map:

[0016] 1-Limiting block; 2-Connecting block; 3-Guide seat; 4-Guide pillar; 5-Base; 6-Cylinder; 7-Limiting part; 8-Long bolt; 9-Lower mold; 10-Limiting groove; 11-Mold base plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-3As shown, an ejector pin for a stamping die includes a limiting block 1 and a connecting block 2. The limiting block 1 is located below the connecting block 2. Both the limiting block 1 and the connecting block 2 are installed on a lower die 9. Below the limiting block 1 are several bases 5 connected to the die base plate 11 of the lower die 9. Below the limiting block 1 are several guide seats 3 connected to the die base plate 11 of the lower die 9. One end of each base 5 has a cylinder 6 that slides with the lower die 9. One end of each guide seat 3 has a guide post 4 that slides with the lower die 9. Both the guide post 4 and the guide post 4 extend along the lower mold 9. The cylinder 6 passes through the limiting block 1 and the connecting block 2 and extends out to the top of the connecting block 2. The guide post 4 passes through the limiting block 1 and extends out to the top of the limiting block 1. One end of the limiting block 1 extends outward to form a limiting part 7. The limiting part 7 is connected to the limiting groove 10 formed inward by the recess of the lower mold 9. Two long bolts 8 are provided on the surface of the connecting block 2. The two long bolts 8 are symmetrically distributed. One end of the long bolt 8 passes through the connecting block 2 and is threadedly connected to the lower mold 9.

[0019] The cylinder 6 is perpendicular to the mold base plate 11 of the lower mold 9, and the guide post 4 is perpendicular to the mold base plate 11 of the lower mold 9. The diameter of the cylinder 6 is larger than the diameter of the guide post 4, and the lengths of the cylinder 6 and the guide post 4 are the same. The surfaces of the cylinder 6 and the guide post 4 are coated with a layer of polytetrafluoroethylene (PTFE) by thermal spraying. By thermally spraying a layer of PTFE onto the surfaces of the cylinder 6 and the guide post 4, the wear resistance is significantly improved and the service life is extended. The larger diameter of the cylinder 6 compared to the guide post 4 enhances the load-bearing capacity of the ejector pin, enabling it to withstand greater ejection forces.

[0020] This embodiment describes an ejector pin applied to a stamping die. By installing a limiting block 1 and a connecting block 2 on the lower die 9, the limiting block 1 and the connecting block 2 limit the cylinder 6 and the guide post 4, ensuring the stability of the cylinder 6 and the guide post 4. This allows the cylinder 6 and the guide post 4 to slide stably along the lower die 9, preventing them from shifting during demolding and greatly improving their accuracy. During demolding, the die base plate 11 of the lower die 9 is connected to an external driving device such as an electric cylinder. The external driving device pushes the die base plate 11 to move, causing the die base plate 11 to push the cylinder 6 and the guide post 4 to move, thus ejecting the product.

[0021] It will be apparent to those skilled in the art that this invention 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 essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A push rod for a stamping die, comprising a limiting block and a connecting block, wherein the limiting block is located below the connecting block, both the limiting block and the connecting block are mounted on a lower die, a plurality of bases connected to the die base plate of the lower die are provided below the limiting block, and a plurality of guide seats connected to the die base plate of the lower die are provided below the limiting block, wherein one end of each base is provided with a cylinder that slides with the lower die, and one end of each guide seat is provided with a guide post that slides with the lower die, characterized in that: Both the cylinder and the guide post extend along the lower mold. The cylinder passes through the limiting block and the connecting block and extends above the connecting block. The guide post passes through the limiting block and extends above the limiting block. One end of the limiting block extends outward to form a limiting part. The limiting part is connected to the limiting groove formed inward by the recess of the lower mold. Two long bolts are provided on the surface of the connecting block. The two long bolts are symmetrically distributed. One end of the long bolt passes through the connecting block and is threadedly connected to the lower mold.

2. The ejector pin for use in stamping dies according to claim 1, characterized in that: The cylinder is perpendicular to the bottom plate of the lower mold.

3. The ejector pin for use in stamping dies according to claim 1, characterized in that: The guide post is perpendicular to the bottom plate of the lower mold.

4. The ejector pin for use in stamping dies according to claim 1, characterized in that: The diameter of the cylinder is larger than the diameter of the guide post.

5. The ejector pin for use in stamping dies according to claim 1, characterized in that: The cylinder and the guide post are of the same length.

6. A push pin for use in a stamping die according to any one of claims 1-5, characterized in that: The surfaces of both the cylinder and the guide post are coated with a layer of polytetrafluoroethylene using a thermal spraying process.

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