CN203448509U - Waste material bounce-preventing female die - Google Patents

Abstract

The utility model discloses a waste material bounce-preventing female die comprising a body which is provided with a through hole matched with a punch pin. The diameter of the through hole is matched with the diameter of a punched hole. The middle portion of the through hole retracts inward and thus an inner hole is formed. Namely, the side section of the through hole is in the shape of a sand clock. The inner hole is provided with a plurality of straight-sided projections evenly in an annular manner in the radial direction. The waste material bounce-preventing female die is simple in structure and reasonable in design and effectively solves the problem of bounce of waste material of the punched hole through the design of the sand clock-shaped through hole.

Description

The anti-jump die of waste material

Technical field

The utility model relates to a kind of punching processing mechanism, a kind of for punching processing specifically, can realize the anti-jump die of punched scrap.

Background technology

Along with the development of economic society, the use of all kinds of handwares is extensive, and numerous parts product, because design and other use need, need to carry out punching processing.

In traditional punching processing mechanism, include die and red needle, the red needle cooperation that is connected with outside power set, carries out punching processing to the part product being placed on die.In the process of punching processing, because the bounce of material when experiencing punching press can there will be rebound phenomenon by waste material when red needle is given up the throne.The rebound of waste material is easily jumped in die face, occurs firmly to contact with part product, damages, breaks or scratch part product by pressure.

For solving the problem of punched scrap rebound, in existing punching processing mechanism, in red needle, add thimble, use thimble to push down waste material, prevent from coming in contact between waste material and part product.

But being added on the one hand of thimble, can reduce the structural strength of red needle, and while be empty in the middle of slug hole, thimble cannot play the effect of bearing down on one accordingly, on the other hand, when punching direct compared with hour, thimble cannot be installed.

In sum, there is now thimble cannot well solve the scrap-bounce problem of punching.

Utility model content

The purpose of this utility model is to solve present thimble existing deficiency in the scrap-bounce problem that solves punching, and a kind of die that can prevent scrap-bounce is provided.

For achieving the above object, the technical scheme that the utility model adopts is as follows:

The utility model includes body, and body is provided with the through hole matching with red needle;

The pore size of through hole and the pore size of punching are suitable;

As a kind of preferred, described through hole cross section is rounded;

Described through hole middle part, to inside contracting, forms an endoporus, and through-hole side cross section is hourglass shape;

A plurality of straight flange projections of the radially even in the form of a ring cloth of described endoporus;

As a kind of preferred, described straight flange projection quantity is three.

The utility model is simple in structure, reasonable in design, by funnel-form via design, can effectively solve the scrap-bounce problem of punching.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of the utility model endoporus.

Fig. 3 is the work schematic diagram that the utility model coordinates with red needle.

In figure, each label respectively: (1) body; (2) through hole; (3) endoporus; (4) red needle; (5) waste material.

The specific embodiment

For convenience of the utility model is done, further understand, existing in conjunction with Fig. 1 to 3 for an embodiment, the utility model is further illustrated.

Embodiment:

Body 1 is provided with the through hole 2 matching with red needle 4;

Described through hole 2 cross sections are rounded; ;

Described through hole 2 middle parts, to inside contracting, form an endoporus 3, and through hole 2 lateral sections are hourglass shape;

Described endoporus 3 forms a horn-like circular hole with through hole 2 upper entrances, and it extends out the number of degrees is 0.573 degree;

Three straight flange projections of the radially even in the form of a ring cloth of described endoporus 3;

Described endoporus 3 forms a horn-like circular hole with through hole 2 bottom inlet/outlets, and it extends out the number of degrees is 4 degree.

During this practical school type work, red needle 4 waste material 5 of rushing to summit, when waste material 5 marches to 3 of endoporus under red needle is beared down on one, due to the straight flange projection of endoporus 3, blocks waste material, and when waste material 5 is by after endoporus 3, the design of horn-like reaming cannot be knock-oned waste material 5.

Claims (3)

1. the anti-jump die of waste material, includes body, it is characterized in that: body is provided with the through hole matching with red needle; Described through hole middle part, to inside contracting, forms an endoporus, and through-hole side cross section is hourglass shape; A plurality of straight flange projections of the radially even in the form of a ring cloth of described endoporus.

2. the anti-jump die of waste material as described in claim 1, is characterized in that: described through hole cross section is rounded.

3. the anti-jump die of waste material as described in claim 1, is characterized in that: described straight flange projection quantity is three.

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