Stamping die for synchronously forming crescent positioning holes

Abstract

The utility model relates to the technical field of stamping dies, in particular to a stamping die for synchronously forming crescent positioning holes. Comprising an upper die base, a plurality of upper forming male parts arranged on the bottom face of the upper die base, a lower die base located below the upper die base, a lower blank holder arranged on the lower die base in a lifting mode, a nitrogen spring elastically connected with the bottom face of the lower blank holder, a plurality of lower forming male parts and a plurality of crescent forming male parts, wherein the lower forming male parts and the crescent forming male parts are arranged on the lower die base and located in the lower blank holder. The multiple upper forming male parts and the multiple lower forming male parts are arranged in a one-to-one correspondence mode, multiple forming holes are formed in the bottom face of the upper die base in an upward concave mode, the multiple forming holes and the multiple crescent forming male parts are arranged in a one-to-one correspondence mode, and the edge of the bottom face of the upper die base is used for abutting against the top face of the lower blank holder. According to the upper die base, stamping forming of the workpiece can be achieved, the crescent-shaped positioning hole can be formed in the workpiece, the workpiece can be accurately positioned in the machining process of follow-up machining equipment, the upper die base is simple in structure and light in weight, and the load of a stamping machine is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch die technical field especially is a kind of punch die of synchronous forming out crescent positioning hole. BACKGROUND

[0002] Punch die is a kind of tool for punching processing, mainly used for the metal or non-metal material is processed into the shape and size required by pressure. Punch die is widely used in automobile, electronic, household appliance, aerospace and other industries, is the important equipment indispensable in manufacturing industry.

[0003] In punch die industry, especially in the production of engineering die or mechanical hand die, the first process is usually forming process. Because the shape of the product after forming is complex or the profile is less, the positioning of the subsequent process is often unstable, which leads to deviation in the production process, affects the product quality and production efficiency.

[0004] In the prior art, the Chinese patent document with the application number 201710567204.7 discloses a kind of hardware die of synchronous punching positioning hole and hot pressing arc, its characterized in that: it includes upper die holder, upper clamping plate, upper stripper plate, lower die holder, lower die plate, the center lower end surface of the upper clamping plate is fixed with hot pressure forming punch, the lower part outer edge of the hot pressure forming punch corresponds to the arc structure of preset product, the center of the upper stripper plate is provided with avoiding cavity, the hot pressure forming punch is placed in the avoiding cavity, the upper stripper plate is connected to the overall structure formed by the upper die holder, upper clamping plate by vertical spring, the upper stripper plate is vertically provided with float dual-purpose pin, the top spring of the float dual-purpose pin is located in the installation cavity corresponding to the upper die holder, upper clamping plate, the lower end of the float dual-purpose pin under unclamped condition is lower than the lower end surface of the upper stripper plate, the top of positioning hole punch is fixed in the positioning cavity formed by the upper die holder, upper clamping plate, the lower end of the positioning hole punch is lower than the lower end surface of the upper stripper plate, the lower die plate is provided with the first avoiding hole passing through the position corresponding to the positioning hole punch below, the second avoiding hole is provided in the middle upper part of the lower die holder corresponding to the positioning hole punch below, lower module is located at the center position of the lower die plate, the lower module is located below the hot pressure forming punch, the lower module, lower die plate are fixed and supported on the upper end surface of the lower die holder. Although the patent document can punch positioning hole synchronously, it belongs to hot punching, and the structure on the upper die holder is complex, so that the weight of the upper die holder is heavy, which increases the load of the punch machine driving the upper die holder to rise and fall.

[0005] Therefore, the defect is very obvious, and a solution needs to be provided. UTILITY MODEL CONTENT

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide a kind of punch die of synchronous forming out crescent positioning hole.

[0007] To achieve the above object, the utility model discloses the following technical scheme:

[0008] A stamping die for synchronously forming crescent-shaped positioning holes, comprising an upper die holder, a plurality of upper forming pins arranged on the bottom surface of the upper die holder, a lower die holder arranged below the upper die holder, a lower pressing ring arranged on the lower die holder in a lifting manner, a nitrogen spring arranged on the lower die holder and elastically connected to the bottom surface of the lower pressing ring, a plurality of lower forming pins and a plurality of crescent-shaped forming pins arranged on the lower die holder and located in the lower pressing ring, the plurality of upper forming pins are arranged in one-to-one correspondence with the plurality of lower forming pins, the upper forming pins and the lower forming pins are concave-convex matched, a plurality of forming holes are concavely arranged on the bottom surface of the upper die holder, the plurality of forming holes are arranged in one-to-one correspondence with the plurality of crescent-shaped forming pins, the crescent-shaped forming pins can extend into the forming holes, and the edge of the bottom surface of the upper die holder is used for abutting against the top surface of the lower pressing ring.

[0009] Further, the lower die holder is provided with a plug-in hole, and the bottom end of the crescent-shaped forming pin is provided with a plug-in rod which is plugged into the plug-in hole.

[0010] Further, the plug-in hole is a stepped hole, and a limiting step is formed between the bottom end surface of the crescent-shaped forming pin and the plug-in rod, and the limiting step is used for abutting against the stepped surface of the stepped hole.

[0011] Further, the bottom surface of the upper die holder is provided with a positioning column, and the lower pressing ring is provided with a positioning hole, and the positioning column can be inserted into the positioning hole.

[0012] The utility model discloses the beneficial effects: in practical application, the upper die holder and the lower die holder are in the open die state, the workpiece is placed on the lower pressing ring, then the stamping end of the punch press drives the upper die holder to move downward, the bottom surface of the lower die holder first presses the edge of the workpiece on the lower pressing ring, along with the lower die holder moving downward, the workpiece is moved downward together with the lower pressing ring and compresses the nitrogen spring, so that the upper forming pin and the lower forming pin cooperate to press and form the workpiece, the crescent-shaped forming pin extends into the forming hole and punches and forms the workpiece upward, so that the workpiece is formed upward into the crescent-shaped positioning hole. The utility model not only can realize the punch forming of the workpiece, but also can form the crescent-shaped positioning hole on the workpiece, which is beneficial to the accurate positioning of the workpiece by the subsequent processing equipment, can improve the stability and precision of the subsequent process, reduce the scrap rate, improve the production efficiency, and the structure of the upper die holder is simple and light in weight, which reduces the load of the punch press and improves the stability of the punch press driving the upper die holder to move up and down. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic diagram that the utility model is in the open die state.

[0014] Figure 2 It is the structure schematic diagram that the utility model is in the open die state.

[0015] Reference Signs List:

[0016] 1, upper die holder; 2, upper forming male; 3, lower die holder; 4, lower pressing ring; 5, nitrogen gas spring; 6, lower forming male; 7, crescent forming male; 8, forming hole; 9, plug-in hole; 10, plug-in rod. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of those skilled in the art, the present application will be further described below in conjunction with the embodiments and drawings. The content mentioned in the embodiments is not a limitation of the present application.

[0018] As shown in Figure 1 and Figure 2 The utility model provides a kind of cold stamping's synchronous forming out crescent positioning hole's stamping die, it includes upper die holder 1, the plurality of upper forming male 2 of being set to the bottom surface of upper die holder 1, lower die holder 3 located in the lower of upper die holder 1, lower pressing ring 4 is arranged in lower die holder 3 and is elastically connected with the bottom surface of lower pressing ring 4, nitrogen gas spring 5 is equipped in lower die holder 3 and is located in lower pressing ring 4, and the plurality of lower forming male 6 and the plurality of crescent forming male 7 are respectively equipped in lower die holder 3, the plurality of upper forming male 2 are respectively and the plurality of lower forming male 6 one-to-one setting, upper forming male 2 and lower forming male 6 concave convex adaptation, the bottom surface of upper die holder 1 is concave and is provided with the plurality of forming holes 8 upwards, the plurality of forming holes 8 are respectively and the plurality of crescent forming male 7 one-to-one setting, crescent forming male 7 can be inserted into forming hole 8, the bottom surface edge of upper die holder 1 is used to be in contact with the top surface of lower pressing ring 4.

[0019] In practical application, upper die holder 1 and lower die holder 3 are in open die state, strip workpiece is placed on lower pressing ring 4, then the stamping end of stamping machine drives upper die holder 1 to move down, the bottom surface of lower die holder 3 first presses the edge of workpiece on lower pressing ring 4, with the moving down of lower die holder 3, workpiece is moved down with lower pressing ring 4 and compresses nitrogen gas spring 5, so that upper forming male 2 and lower forming male 6 cooperate to press and form workpiece, crescent forming male 7 is inserted into forming hole 8 and is formed upwards to workpiece, so that workpiece is formed upwards to crescent positioning hole. The utility model not only can realize the stamping forming of workpiece, but also can form crescent positioning hole on workpiece, which is beneficial to the accurate positioning of subsequent processing equipment for workpiece processing, can improve the stability and precision of subsequent process, reduce the scrap rate, improve production efficiency, and the structure of upper die holder 1 is simple, light in weight, reduces the load of stamping machine, improves the stability of stamping machine driving upper die holder 1 to move up and down.

[0020] In the embodiment, lower die holder 3 is provided with plug-in hole 9, and the bottom end of crescent forming male 7 is provided with plug-in rod 10, which is inserted into plug-in hole 9. The structure design facilitates the assembly of crescent forming male 7 and lower die holder 3.

[0021] In the embodiment, the insertion hole 9 is a stepped hole, a bottom end surface of the crescent-shaped male 7 and the insertion rod 10 form a limiting step, and the limiting step is used to abut against the stepped surface of the stepped hole. The limiting step is limited by abutting against the stepped surface of the stepped hole, so as to ensure the position accuracy and stability of the crescent-shaped male 7 assembled in the insertion hole 9 of the lower die seat 3.

[0022] In the embodiment, the bottom surface of the upper die seat 1 is provided with a positioning column, and the lower pressing edge ring 4 is provided with a positioning hole, and the positioning column can be inserted into the positioning hole. When the upper die seat 1 and the lower die seat 3 are closed, the positioning column is inserted into the positioning hole after penetrating through the process hole of the workpiece. Through the cooperation of the positioning column and the positioning hole, the workpiece is not only positioned, but also the position accuracy and stability of the workpiece are improved, and the accuracy of the upper die seat 1 and the lower die seat 3 is also improved.

[0023] All the technical features in the embodiment can be freely combined according to actual needs.

[0024] The above embodiment is a preferred implementation scheme of the present application, in addition to this, the present application can be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the present application.

Claims

1. A stamping die for simultaneously forming crescent-shaped positioning holes, characterized in that: Includes an upper mold base (1), multiple upper forming males (2) disposed on the bottom surface of the upper mold base (1), a lower mold base (3) located below the upper mold base (1), a lower pressure ring (4) that is lifted and disposed on the lower mold base (3), a nitrogen spring (5) installed on the lower mold base (3) and elastically connected to the bottom surface of the lower pressure ring (4), and multiple lower forming males (6) and multiple crescent forming males (7) respectively installed on the lower mold base (3) and located in the lower pressure ring (4). Multiple upper forming males (2) are respectively set to correspond one-to-one with multiple lower forming males (6). The upper forming males (2) and lower forming males (6) are adapted to each other. Multiple forming holes (8) are recessed upward on the bottom surface of the upper mold base (1). Multiple forming holes (8) are respectively set to correspond one-to-one with multiple crescent forming males (7). The crescent forming males (7) can extend into the forming holes (8). The bottom edge of the upper mold base (1) is used to abut against the top surface of the lower pressure ring (4).

2. The stamping die for simultaneously forming crescent-shaped positioning holes according to claim 1, characterized in that: The lower mold base (3) is provided with an insertion hole (9), and the bottom end of the crescent-shaped male (7) is provided with an insertion rod (10), which is inserted into the insertion hole (9).

3. The stamping die for simultaneously forming crescent-shaped positioning holes according to claim 2, characterized in that: The insertion hole (9) is a stepped hole. A limiting step is formed between the bottom end face of the crescent-shaped male (7) and the insertion rod (10). The limiting step is used to abut against the stepped surface of the stepped hole.

4. The stamping die for simultaneously forming crescent-shaped positioning holes according to claim 1, characterized in that: The bottom surface of the upper mold base (1) is provided with a positioning post, and the lower pressure edge ring (4) is provided with a positioning hole, and the positioning post can be inserted into the positioning hole.

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