Round mold for core-pulling pipe of ammunition chain

Abstract

The utility model relates to the field of dies, and particularly discloses a round die for an ammunition chain core-pulling pipe, which comprises an upper interlayer, a lower interlayer, a lower clamping plate and a lower clamping plate, the lower interlayer comprises a lower die base, a lower cushion plate arranged on the inner side of the lower die base and a lower die plate arranged on the inner side of the lower cushion plate, and a moving cavity for the material belt to move is formed between the upper stripping plate and the lower die plate. A punch cutting female die, a first punch modeling female die, a core pulling mechanism, a second punch modeling female die and a third punch modeling female die are sequentially arranged between the upper stripping plate and the lower die plate in the feeding direction, and the problem that when a traditional elastic chain round pipe is manufactured through continuous stamping of a continuous die, the yield of an obtained elastic chain round pipe product is unstable is solved.

Description

Technical Field

[0001] This application relates to the field of molds, and specifically discloses a round die for a bullet chain core-pulling tube. Background Art

[0002] In the preparation process of the existing bullet chain round tube, a progressive die is used for preparation. The strip is fed into the progressive die, and through a multi-station punch arranged continuously, multiple stamping processes are completed through multiple different stations to form a round tube from a plate.

[0003] However, in the prior art, during the stamping process of the punch, there is no support at the center of the plate. The surface of the round tube obtained only by repeated stamping may have depressions, the dimensions cannot be guaranteed, and the product production is unstable.

[0004] Therefore, in view of this, the inventor provides a round die for a bullet chain core-pulling tube to solve the above problems. Summary of the Utility Model

[0005] The purpose of the present utility model is to solve the problem that the product production of the traditional bullet chain round tube is unstable when it is continuously stamped by a progressive die.

[0006] To achieve the above purpose, the basic solution of the present utility model provides a round die for a bullet chain core-pulling tube, including:

[0007] An upper sandwich layer, which includes an upper die base, an upper backing plate arranged inside the upper die base, an upper clamping plate arranged inside the upper backing plate, and an upper stripper plate arranged inside the upper clamping plate;

[0008] A lower sandwich layer, which includes a lower die base, a lower backing plate arranged inside the lower die base, and a lower template arranged inside the lower backing plate;

[0009] A moving cavity for the strip to move is provided between the upper stripper plate and the lower template. Along the feeding direction, a punch trimming female die, a first punch profiling female die, a core-pulling mechanism, a second punch profiling female die, and a third punch profiling female die are sequentially arranged between the upper stripper plate and the lower template.

[0010] Further, along the feeding direction, a flattening die is also arranged between the upper stripper plate and the lower template in front of the punch trimming female die.

[0011] Further, the core-pulling mechanism includes a shaping core arranged between the upper stripper plate and the lower template, a joint connected to the end of the shaping core, and a cylinder fixedly connected to the joint and used to drive the joint and the shaping core to reciprocate.

[0012] Further, the upper die base, the upper backing plate, the upper sandwich layer, and the upper stripper plate are all connected in a detachable connection manner.

[0013] Further, the lower die base, the lower backing plate, and the lower template are all connected in a detachable connection manner.

[0014] The principle and effect of this scheme are:

[0015] Compared with the prior art, the utility model is provided with a core pulling mechanism between the upper stripping plate and the lower template. In the process of preparing the bullet chain, the core pulling mechanism can ensure that each product is rounded once through core pulling, so as to ensure that the roundness of the prepared single chain product remains consistent, thereby ensuring stable product production, and solving the problem of unstable production of the traditional bullet chain round tube products when the bullet chain round tube is prepared by continuous stamping of a continuous die. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of a circular die for a core-pulling tube of a bullet chain proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0019] The figure marks in the drawings of the specification include: upper die base 1, upper pad 2, upper clamping plate 3, upper stripping plate 4, lower template 5, lower pad 6, lower die base 7, flattening die 8, punch cutting die 9, punch shaping die one 10, core pulling mechanism 11, punch shaping die two 12, punch shaping die three 13.

[0020] A round die for a core-pulling tube of a chain, for example Figure 1 As shown:

[0021] The utility model comprises an upper interlayer and a lower interlayer. During use, the upper interlayer and the lower interlayer are respectively installed on a slide block and a table top of a press machine.

[0022] The upper sandwich layer comprises an upper die base 1, an upper pad 2, an upper clamping plate 3 and an upper stripping plate 4 which are sequentially mounted on the inner side of the upper die base 1 through screws.

[0023] The lower interlayer comprises a lower die base 7, a lower pad 6 and a lower die plate 5 which are sequentially mounted on the inner side of the lower die base 7 through screws.

[0024] In this embodiment, a moving cavity for the feeding belt to move is formed between the upper stripping plate 4 and the lower template 5 during separation. Along the feeding direction, a flattening die 8, a punch trimming concave die 9, a first punch profiling concave die 10, a core-pulling mechanism 11, a second punch profiling concave die 12, and a third punch profiling concave die 13 are sequentially arranged between the upper stripping plate 4 and the lower template 5. After sequentially completing the flattening, trimming, bending, curling, primary shaping, and secondary shaping of the plate part, the product is produced to complete all processes.

[0025] Specifically, the core-pulling mechanism 11 includes a shaping core installed between the upper stripping plate 4 and the lower template 5, a joint installed at the end of the shaping core, and a cylinder installed on the joint and used to drive the joint and the shaping core to reciprocate. The start and stop of the cylinder are controlled by an external control unit, and the specific start and stop times correspond to the movement time of the material belt.

[0026] In the present utility model, a core-pulling mechanism 11 is arranged between the upper stripping plate 4 and the lower template 5. In the process of preparing the elastic chain, through the core-pulling mechanism 11, it can be ensured that each product undergoes core-pulling and rounding once, ensuring that the roundness of the single-chain products obtained is consistent and guaranteeing the stable production of the products.

[0027] The above is only a preferred embodiment of the present utility model and does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed as above with a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments with equivalent changes. However, as long as it does not depart from the technical content of the present utility model, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A circular die for a core-pulling tube of an ammunition chain, characterized in that: include: An upper interlayer, the upper interlayer comprising an upper die seat, an upper pad disposed inside the upper die seat, an upper clamping plate disposed inside the upper pad, and an upper stripping plate disposed inside the upper clamping plate; A lower interlayer, the lower interlayer comprising a lower die base, a lower pad disposed inside the lower die base, and a lower template disposed inside the lower pad; A moving cavity for moving the feeding belt is arranged between the upper stripping plate and the lower template, and a punch cutting die, a punch shaping die 1, a core pulling mechanism, a punch shaping die 2 and a punch shaping die 3 are arranged in sequence between the upper stripping plate and the lower template along the feeding direction.

2. The circular die for the core-pulling tube of a chain ammunition chain according to claim 1, characterized in that: Along the feeding direction, a flattening die is also arranged between the upper stripping plate and the lower die plate in front of the punch shearing die.

3. The circular die for the core-pulling tube of a chain according to claim 1, characterized in that: The core pulling mechanism comprises a shaping core arranged between the upper stripping plate and the lower template, a joint connected to the end of the shaping core, and a cylinder fixed to the joint and used for driving the joint and the shaping core to reciprocate.

4. The circular die for the core-pulling tube of a chain ammunition chain according to claim 1, characterized in that: The upper die seat, the upper pad, the upper interlayer and the upper stripping plate are all connected in a detachable manner.

5. The circular die for the core-pulling tube of a chain ammunition chain according to claim 4, characterized in that: The lower die base, the lower pad and the lower die plate are all connected in a detachable manner.

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