Female die cavity structure of cold header

Abstract

The female die cavity structure of the cold header comprises a female die cavity body, a forming cavity is formed in the female die cavity body, a blanking hole is formed in the side bottom of the forming cavity and penetrates through the bottom wall of the forming cavity, and the section of the blanking hole is in a funnel shape; and a plug block is arranged in the blanking hole and is detachable. The technical effects are achieved as follows: the section of the blanking hole is funnel-shaped, a smooth outlet space can be provided for blanked waste materials on the premise that the overall strength is not obviously reduced, and the funnel shape is adopted, so that the discharge of the waste materials is facilitated, and the possibility of blockage caused by mutual stacking of the waste materials is reduced; the plug block is detachably arranged in the blanking hole, circulation and air tightness of lubricating oil can be conveniently kept in the cold heading production process, and production is facilitated. And meanwhile, small mold accessories cannot fall into a waste channel in the mounting and dismounting processes. When needed, the plug block can be taken down, the blanking hole is opened, and therefore it is guaranteed that waste is discharged smoothly.

Description

Technical Field

[0001] This invention relates to the field of cold heading machine technology, and more specifically to a cold heading machine die cavity structure. Background Technology

[0002] During cold heading, the punch reciprocates left and right, while the die remains stationary. The punch and die are installed in the punch cavity and die cavity, respectively. In the production of new energy vehicle parts, some parts are hollow. These parts are produced on a cold heading machine and require blanking operations, which generate waste material. The die cavity of the cold heading machine must have a dedicated channel to discharge this waste material. In existing technology, a simple hole is usually left directly in the die cavity as a blanking hole, through which the blanking waste material is discharged directly without any covering function. The problem is that the waste material can easily get stuck and block the blanking hole, causing production accidents. In addition, the presence of this hole also makes it easy for small components inside the die, such as small pads and small springs, to fall into the waste material channel of the equipment during die installation and disassembly, requiring operators to spend a lot of effort to find them. Summary of the Invention

[0003] Therefore, the present invention provides a cavity structure for a cold heading machine to solve the above-mentioned problems in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] According to a first aspect of the present invention, a cold heading machine die cavity structure includes a die cavity body, a forming cavity is provided inside the die cavity body, a punching hole is provided at the bottom side of the forming cavity, the punching hole penetrates the bottom wall of the forming cavity, and the cross-section of the punching hole is funnel-shaped; a plug is provided inside the punching hole, and the plug is detachable.

[0006] Furthermore, the plug is provided with multiple through holes, which are arranged sequentially along the length of the plug. The through holes penetrate the plug and communicate with the molding cavity. A plug is detachably provided inside the through hole.

[0007] Furthermore, the number of through holes is five, and the five through holes are arranged at equal intervals.

[0008] Furthermore, the through hole is a threaded hole, and the plug is a bolt.

[0009] Furthermore, magnets are respectively provided on both sides of the plug.

[0010] Furthermore, mounting grooves are provided on both sides of the plug, and the magnet is disposed in the mounting groove.

[0011] Furthermore, the forming cavity is cylindrical, and the top of the plug is a concave arc surface, the concave arc surface having the same shape as the inner wall of the forming cavity corresponding to the top of the punching hole.

[0012] Furthermore, there are multiple molding cavities, which are arranged parallel to each other along the length direction of the die cavity body.

[0013] Furthermore, the number of molding cavities is five, and the five molding cavities are arranged at equal intervals.

[0014] Furthermore, the punching hole is an elongated hole, which is arranged along the length direction of the forming cavity.

[0015] This invention has the following advantages: the cross-section of the punching hole is funnel-shaped, which provides a relatively smooth outlet space for the punched waste without significantly reducing the overall strength. The funnel shape facilitates the discharge of waste and reduces the possibility of blockage caused by its accumulation. A removable plug is provided inside the punching hole to easily maintain the circulation and airtightness of lubricating oil during cold heading, facilitating production. It also ensures that small mold parts do not fall into the waste channel during installation and disassembly. When necessary, the plug can be removed, opening the punching hole and ensuring smooth waste discharge. The entire device has a simple structure, allows for flexible adjustment of the state of the punching hole in the die cavity to meet different production needs, has stable operation, and performs well in practical applications. It can adapt to various cold heading production applications of similar types of parts. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] Figure 1 This is a three-dimensional structural diagram of a cold heading machine die cavity structure after the plug is installed, as provided in some embodiments of the present invention.

[0019] Figure 2 This is a front view of a cold heading machine die cavity structure after the plug block has been installed, according to some embodiments of the present invention.

[0020] Figure 3 for Figure 2 AA sectional view.

[0021] Figure 4 for Figure 2 BB cross-sectional view.

[0022] Figure 5 This is a perspective view of a cold heading machine cavity structure provided for some embodiments of the present invention.

[0023] Figure 6 This is a front view of a cold heading machine die cavity structure provided for some embodiments of the present invention.

[0024] Figure 7 for Figure 6 AA sectional view.

[0025] Figure 8 for Figure 6 BB cross-sectional view.

[0026] Figure 9 This is a longitudinal sectional view of a cold heading machine die cavity structure provided for some embodiments of the present invention.

[0027] Figure 10 This is a first-view perspective perspective view of a plug block for a cold heading machine cavity structure provided in some embodiments of the present invention.

[0028] Figure 11 This is a second-view perspective perspective view of a plug block for a cold heading machine cavity structure provided in some embodiments of the present invention.

[0029] Figure 12 This is a front view of a plug block for a cold heading machine cavity structure provided in some embodiments of the present invention.

[0030] Figure 13 This is a side view of a plug block in a cold heading machine die cavity structure provided for some embodiments of the present invention.

[0031] Figure 14 for Figure 13 AA sectional view.

[0032] Figure 15 This is a top view of a plug block in the cavity structure of a cold heading machine, provided for some embodiments of the present invention.

[0033] In the figure: 1. Die cavity body, 2. Forming cavity, 3. Punching hole, 4. Plug, 5. Through hole, 6. Mounting groove. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figures 1 to 15 As shown, a cold heading machine die cavity structure according to a first aspect embodiment of the present invention includes a die cavity body 1, a forming cavity 2 is provided inside the die cavity body 1, a punching hole 3 is provided at the bottom side of the forming cavity 2, the punching hole 3 penetrates the bottom wall of the forming cavity 2, specifically, the punching hole 3 is an elongated hole, the elongated hole is arranged along the length direction of the forming cavity 2, and the cross section of the punching hole 3 is funnel-shaped; a plug 4 is provided inside the punching hole 3, the plug 4 is detachable, the plug 4 is wedge-shaped, and the plug 4 is used to block the punching hole 3.

[0037] In this embodiment, it should be noted that there are multiple forming cavities 2, which are arranged parallel to each other along the length of the die cavity body 1, so that multiple parts can be cold-forged and stamped at the same time, resulting in higher work efficiency; specifically, there are five forming cavities 2, which are arranged at equal intervals.

[0038] The technical effects achieved in this embodiment are as follows: the cross-section of the punching hole 3 is funnel-shaped, which can provide a smooth exit space for the punched waste without significantly reducing the overall strength. The funnel shape facilitates the discharge of waste and reduces the possibility of blockage caused by its accumulation. A plug 4 is detachably provided inside the punching hole 3. When assembling or disassembling the mold, the plug 4 can be used to seal the punching hole 3 to prevent small parts from falling out of the punching hole 3 during installation. Alternatively, when it is necessary to keep the lubricating oil or compressed air in the die cavity sealed, the plug 4 can be used to seal the punching hole 3 to form a sealed space. When punching is required, the plug 4 can be removed, and the punching hole 3 will be restored to smooth flow, allowing the punched waste to be discharged from the die cavity through the punching hole 3. The entire device has a simple structure, can flexibly adjust the state of the punching hole in the die cavity to meet different production needs, has a stable working state, and has good results after practical application.

[0039] Example 2

[0040] like Figures 1 to 15 As shown in the figure, another cold heading machine cavity structure provided in this embodiment includes all the contents of embodiment 1. Only the different parts are described below.

[0041] In this embodiment, the plug 4 is provided with multiple through holes 5, which are arranged sequentially along the length of the plug 4. The through holes 5 penetrate the plug 4 and are connected to the molding cavity 2. A plug is detachably provided inside the through hole 5. Specifically, the through hole 5 is a threaded hole, and the plug is a bolt. The bolt is threadedly connected to the threaded hole, which can flexibly control the closing and opening of the through hole 5.

[0042] In this embodiment, it should be noted that there are five through holes 5, which are equally spaced. Each through hole 5 is equipped with a plug. If it is necessary to maintain the proper leakage of lubricating oil or compressed air in the forming cavity 2 at the corresponding work station and ensure the pressure balance inside and outside the forming cavity 2, one or more bolts can be removed. This method can adjust the leakage flow of lubricating oil and compressed air (the more bolts removed, the greater the leakage flow).

[0043] The technical effect achieved by this embodiment is that by setting multiple through holes 5, the leakage flow rate can be flexibly adjusted during use.

[0044] Example 3

[0045] like Figures 1 to 15 As shown in the figure, another cold heading machine cavity structure provided in this embodiment includes all the contents of embodiment 1. Only the different parts are described below.

[0046] In this embodiment, magnets are provided on both sides of the plug 4, and the magnets are powerful magnets.

[0047] In this embodiment, it should be noted that, as Figures 10 to 12 As shown, the plug 4 has two mounting slots 6 on each side. Specifically, the plug 4 has two mounting slots 6 on each side. The mounting slots 6 are cylindrical and each mounting slot 6 contains a magnet.

[0048] The technical effect achieved by this embodiment is as follows: magnets are provided on both sides of the plug 4. The plug 4 is magnetically connected to the die cavity body 1 through the magnets. Due to the action of the strong magnet, the plug 4 can be firmly fixed in the punching hole 3. There will be a large vibration during the production process of the cold heading machine, but the huge attraction of the strong magnet can fix the plug 4 to the die cavity body 1 firmly, effectively preventing the plug 4 from falling off during operation.

[0049] Example 4

[0050] like Figures 1 to 15 As shown in the figure, another cold heading machine cavity structure provided in this embodiment includes all the contents of embodiment 1. Only the different parts are described below.

[0051] In this embodiment, as Figures 9 to 11As shown, the forming cavity 2 is cylindrical, and the top of the plug 4 is a concave arc surface. The concave arc surface has the same shape as the inner wall of the forming cavity 2 corresponding to the top of the punching hole 3. After the plug 4 is installed into the punching hole 3, the top of the plug 4 is integrated with the bottom wall of the forming cavity 2, which will not affect the normal processing operation.

[0052] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0053] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

Claims

1. A cavity structure for a cold heading machine, characterized in that, The device includes a die cavity body (1), a forming cavity (2) is provided inside the die cavity body (1), a punching hole (3) is provided at the bottom side of the forming cavity (2), the punching hole (3) penetrates the bottom wall of the forming cavity (2), and the cross section of the punching hole (3) is funnel-shaped; a plug (4) is provided inside the punching hole (3), and the plug (4) is detachable.

2. The structure of the cold heading machine die cavity according to claim 1, characterized in that, The plug (4) is provided with a plurality of through holes (5), which are arranged sequentially along the length of the plug (4). The through holes (5) penetrate the plug (4) and are connected to the molding cavity (2). A plug is detachably provided inside the through hole (5).

3. The cold heading machine die cavity structure according to claim 2, characterized in that, The number of through holes (5) is five, and the five through holes (5) are arranged at equal intervals.

4. The structure of the cold heading machine cavity according to claim 2, characterized in that, The through hole (5) is a threaded hole, and the plug is a bolt.

5. The structure of a cold heading machine die cavity according to claim 1, characterized in that, Magnets are provided on both sides of the plug (4).

6. The cold heading machine die cavity structure according to claim 5, characterized in that, The plug (4) has mounting grooves (6) on both sides, and the magnet is disposed in the mounting grooves (6).

7. The structure of a cold heading machine die cavity according to claim 1, characterized in that, The forming cavity (2) is cylindrical, and the top of the plug (4) is a concave arc surface. The concave arc surface has the same shape as the inner wall of the forming cavity (2) corresponding to the top of the punch hole (3).

8. The cold heading machine die cavity structure according to claim 7, characterized in that, There are multiple molding cavities (2), and the multiple molding cavities (2) are arranged parallel to each other along the length direction of the cavity body (1).

9. The structure of a cold heading machine die cavity according to claim 8, characterized in that, The number of molding cavities (2) is five, and the five molding cavities (2) are arranged at equal intervals.

10. The structure of a cold heading machine cavity according to claim 1, characterized in that, The punching hole (3) is an elongated hole, which is set along the length direction of the forming cavity (2).

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