Hole lower wall thickness increasing and lower stripping mechanism for cold heading forming

Abstract

The utility model relates to the technical field of fasteners, in particular to an under-hole wall thickness increasing and lower stripping mechanism for cold heading forming, which comprises a lower die, a lower punching cushion block, a lower stripping cushion block and a cylindrical spiral spring, the lower die is arranged in a main die shell, the lower punching cushion block is arranged in the main die shell and is arranged on the side wall of the lower die, and the cylindrical spiral spring is arranged on the side wall of the lower die. In the forming process, firstly, the part main mold shell retreats from the part lower mold, then, the lower ejector rod pushes the part lower stripping cushion block to move, and therefore the part lower stripping rod and the part stripping gasket are linked, the part main mold shell and the part lower stripping cushion block are separated from each other, and the part main mold shell and the part lower stripping cushion block are separated from each other. The punching die is suitable for a cold heading forming process of a product which needs to punch waste materials and is thin in pipe wall thickness, so that the service life of the die is greatly prolonged, and the debugging difficulty of the product and the dependence on the product stability and the equipment precision are reduced.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a mechanism for increasing wall thickness and removing material from holes in cold heading. Background Technology

[0002] Over the past three decades, the rapid development of the metallurgical, machinery, and electronics industries has driven the upgrading of fastener products and the continuous progress of the fastener industry worldwide. In particular, in recent years, fastener products have become increasingly complex in form, and the requirements for new products have become increasingly stringent.

[0003] Traditional methods of increasing wall thickness below the hole and using a lower demolding mechanism result in thicker pipe walls. Furthermore, the molds are prone to damage and have a short service life during mass production, thus increasing production costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a mechanism for increasing wall thickness and removing material from holes in cold heading forming. This solves the technical problems of traditional mechanisms for increasing wall thickness and removing material from holes, which produce tubes with thicker walls and are prone to mold damage and short service life during mass production, thus increasing production costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cold heading forming hole-increasing wall thickness and lower stripping mechanism includes a main die shell. A stripping mechanism is fixedly installed inside the main die shell. The stripping mechanism includes a lower die, a lower punch pad, a lower stripping pad, and a cylindrical helical spring. The lower die is located inside the main die shell, the lower punch pad is located inside the main die shell and on the side wall of the lower die, the lower stripping pad is located inside the lower punch pad, and the cylindrical helical spring is located inside the lower punch pad and on the side wall of the lower die.

[0007] Preferably, the thickness of the main membrane shell is 1.1 millimeters.

[0008] Preferably, the lower mold has a hole inside.

[0009] Preferably, the lower mold is provided with a lower stripper rod and a stripper pad.

[0010] Preferably, the stripping pad is disposed on the side wall of the lower stripping rod, and the blank is located on the lower side wall of the hole.

[0011] Preferably, the blank is located between two stripping pads.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] First, during the forming process, the main mold shell of the component is removed from the lower mold of the component. Then, the lower ejector rod (tooling of the equipment) pushes the lower stripper block of the component to move, thereby linking the lower stripper rod of the component and the stripper pad of the component to push the punched component blank out from the inside of the component hole. It is suitable for cold heading forming process of products that require scrap removal and have thin pipe wall thickness, thereby greatly improving the service life of the mold, reducing the difficulty of product debugging and the dependence on product stability and equipment precision.

[0014] Second, the lower hole loses its pushing function, and a new lower ejector rod is added to push the material. After the lower ejector rod pushes the material, the lower ejector rod is reset by the action of the cylindrical helical spring, thereby achieving the function of continuous operation. Attached Figure Description

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0017] Figure 2 This is a structural diagram of the lower mold of this utility model.

[0018] Figure 3 This is a diagram of the hole structure of this utility model.

[0019] Legend: 11. Main mold shell; 12. Lower mold; 13. Lower punch pad; 14. Lower stripper pad; 15. Cylindrical helical spring; 16. Hole; 17. Lower stripper rod; 18. Stripper pad; 19. Blank. Detailed Implementation

[0020] This application provides a mechanism for increasing wall thickness under holes and removing material during cold heading, effectively solving the problems of traditional mechanisms that produce thicker pipe walls, are prone to mold damage and have short service life during mass production, thus increasing production costs. In the heading process, firstly, the main mold shell of the component is removed from the lower mold. Then, the lower ejector rod (tooling of the equipment) pushes the lower material removal pad of the component to move, thereby linking the lower material removal rod and the material removal pad to push the punched component blank out from the inside of the hole. This is suitable for cold heading processes of products requiring scrap removal and with thin pipe walls, greatly improving the service life of the mold, reducing the difficulty of product debugging and the dependence on product stability and equipment precision. The lower hole loses its pushing function, and the newly added lower material removal rod takes over the pushing function. After the lower material removal rod pushes the material, the lower material removal rod is reset using a cylindrical helical spring, thus achieving continuous operation. Example

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the technical solution in this application embodiment effectively solves the technical problem that traditional hole-increasing and lower demolding mechanisms produce pipes with thicker walls, and the molds are easily damaged and have a short service life in mass production, thus increasing production costs. The overall idea is as follows: A hole-increasing and lower demolding mechanism for cold heading includes a main mold shell 11. A demolding mechanism is fixedly installed inside the main mold shell 11. The demolding mechanism includes a lower mold 12, a lower punch pad 13, a lower demolding pad 14, and a cylindrical helical spring 15. The lower mold 12 is located inside the main mold shell 11, the lower punch pad 13 is located inside the main mold shell 11, the lower punch pad 14 is located on the side wall of the lower mold 12, and the lower demolding pad 15 is located on the side wall of the lower mold 12. 14 is set inside the lower punch pad 13, and the cylindrical helical spring 15 is located inside the lower punch pad 13 and on the side wall of the lower die 12. During the forming process, firstly, the main die shell 11 of the component is removed from the lower die 12 of the component. Then, the lower ejector rod (tooling of the equipment) pushes the lower ejector pad 14 of the component to move, thereby linking the lower ejector rod 17 of the component and the ejector pad 18 of the component to push the punched component blank 19 out of the inside of the lower hole 16 of the component. It is suitable for cold heading forming process of products that need to punch waste and have thin pipe wall thickness, thereby greatly improving the service life of the mold, reducing the debugging difficulty of the product and the dependence on product stability and equipment precision.

[0022] The thickness of the main membrane shell 11 is 1.1 millimeters, which provides ample space for objects inside the device.

[0023] The lower die 12 has a hole 16 inside, a lower stripper rod 17 inside, and a stripper shim 18 inside. The stripper shim 18 is located on the side wall of the lower stripper rod 17. The blank 19 is located on the side wall of the hole 16 and between the two stripper shims 18. The hole 16 loses its pushing function, and the newly added lower stripper rod 17 plays the pushing function. After the lower stripper rod 17 pushes the material, the lower stripper rod 17 is reset by the action of the cylindrical helical spring 15, thereby achieving the function of continuous operation.

[0024] To address the problems existing in the prior art, this utility model provides a mechanism for increasing wall thickness and demolding under holes in cold heading forming. During the forming process, firstly, the main mold shell 11 of the component is removed from the lower mold 12 of the component. Then, the lower ejector rod (tooling of the equipment) pushes the lower ejector pad 14 of the component to move, thereby linking the lower ejector rod 17 and the ejector pad 18 of the component to push the punched component blank 19 out of the inside of the lower hole 16 of the component. It is suitable for cold heading forming processes of products that require scrap removal and have thin pipe wall thickness, thereby greatly improving the service life of the mold, reducing the difficulty of product debugging and the dependence on product stability and equipment precision. The lower hole 16 loses its pushing function, and the newly added lower ejector rod 17 plays the role of pushing. After the lower ejector rod 17 pushes the material, the lower ejector rod 17 is reset by the action of the cylindrical helical spring 15, thereby achieving the function of continuous operation.

[0025] Working principle:

[0026] In the first step, during the forming process, the main mold shell 11 of the component is first removed from the lower mold 12 of the component. Then, the lower ejector rod (tooling of the equipment) pushes the lower stripping pad 14 of the component to move, thereby linking the lower stripping rod 17 of the component and the stripping pad 18 of the component to push the punched component blank 19 out of the inside of the lower hole 16 of the component. This is suitable for cold heading forming process of products that require scrap removal and have thin pipe wall thickness, thereby greatly improving the service life of the mold, reducing the difficulty of product debugging and the dependence on product stability and equipment precision.

[0027] In the second step, the lower hole 16 loses its pushing function, and the newly added lower ejector rod 17 plays the role of pushing material. After the lower ejector rod 17 pushes the material, the lower ejector rod 17 is reset by the action of the cylindrical helical spring 15, thereby achieving the function of continuous operation.

[0028] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A mechanism for increasing the wall thickness under the hole and removing the material under the hole for cold heading forming, comprising a main film shell (11), characterized in that, The main film shell (11) is internally fixedly installed with a demolding mechanism, the demolding mechanism comprises a lower die (12), a lower punch pad (13), a lower demolding pad (14) and a cylindrical helical spring (15), the lower die (12) is arranged in the main film shell (11), the lower punch pad (13) is arranged in the main film shell (11), the lower punch pad (13) is arranged on the side wall of the lower die (12), and the lower demolding pad (14) is arranged in the lower punch pad (13). The cylindrical helical spring (15) is arranged in the lower punch pad (13), and the cylindrical helical spring (15) is arranged on the side wall of the lower die (12).

2. The mechanism for increasing the wall thickness under the hole and removing the material under the hole for cold heading forming according to claim 1, wherein The thickness of the main film shell (11) is 1.1 mm.

3. The mechanism for increasing the wall thickness under the hole and removing the material under the hole for cold heading as claimed in claim 1, wherein The lower die (12) is internally provided with a hole lower portion (16).

4. The mechanism for increasing the wall thickness under the hole and removing the material under the hole for cold heading forming according to claim 3, wherein The lower die (12) is internally provided with a lower demolding rod (17). The lower die (12) is internally provided with a demolding gasket (18).

5. The mechanism for increasing the wall thickness under the hole and removing the material under the hole for cold heading forming according to claim 4, wherein The demolding gasket (18) is arranged on the side wall of the lower demolding rod (17). The blank (19) is arranged on the side wall of the hole lower portion (16).

6. The mechanism for increasing the wall thickness under the hole and removing the material under the hole for cold heading forming according to claim 5, wherein The blank (19) is arranged between the two demolding gaskets (18).

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