CN2902516Y

CN2902516Y - Cold punching net hole mould

Info

Publication number: CN2902516Y
Application number: CN 200620041258
Authority: CN
Inventors: 陈卫国
Original assignee: SHANGHAI HUASHI PRECISION MOULD CO Ltd
Current assignee: SHANGHAI HUASHI PRECISION MOULD CO Ltd
Priority date: 2006-04-21
Filing date: 2006-04-21
Publication date: 2007-05-23
Anticipated expiration: 2016-04-21

Abstract

The utility model relates to a cold mesh die comprising a die hole, wherein the end-face of the die hole(1) is round, at least two outward beards(11) are included on the circumference, the vertical cross section of the effective operation depth L is reversed taper-shaped from top to bottom. The utility model has the advantages that the changing of the shape of the scraps inside the cavity die hole and the reduce of the number of the overstock scraps inside the cavity die hole overcome the abnormal case which exists in the routine processing technology.

Description

Cold punching mesh mould

Technical field

The utility model relates to a kind of cold punching mesh mould, relates in particular to the shape in this cold punching mesh mould concave nib.

Background technology

Cold punching mesh mould is a kind of for the mould of top-grade building ceiling decoration web plate.These top-grade building ceiling decoration web plates are mainly used in large-scale construction-engineering project, and furred ceiling is decorated in the architectural engineering of logo image.

Cold punching mesh mould is common with 700 ~ 1500 holes generally, and die length is about 1000mm, and what have reaches 1750mm.

By Fig. 1, Fig. 2 as seen: the end face in each hole is circular in the prior art cold punching mesh mould, and the effective use degree of depth L in the hole faces directly.Such shape can cause: punching pin is die-cut in processing technology enters the end face that formed waste material sheet in the die hole sticks close together punching pin and forms vacuum, when punching pin is extracted die out, because of regular shape, the friction of circular hole little, waste material in the die hole very easily adheres to the punching pin end face and jumps out the die working face, product to punching press causes impression, influences the outward appearance or the function of the product of punching press; Common abnormal makes the punching pin fracture in addition, and its maintenance rate is than higher, and influence is produced normally.

Summary of the invention

The utility model technical issues that need to address have provided a kind of cold punching mesh mould, are intended to solve above-mentioned defective.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises nib; The end face of described nib is a circle, is also comprising more than at least two, outside groove on the circumference; The vertical cross-section of effective use degree of depth of described nib from top to bottom is turbination;

Compared with prior art, the beneficial effects of the utility model are: owing to change the shape of waste material in the die hole and reduced the sheet number that waste material overstocks in the die hole, can overcome unusual that conventional processing technology occurs.

Description of drawings

Fig. 1 is the transverse end surface figure in each hole in the cold punching mesh mould in the prior art;

Fig. 2 is the vertical cross-section figure in each hole in the cold punching mesh mould in the prior art;

Fig. 3 is the transverse end surface figure in each hole of the present utility model;

Fig. 4 is the vertical cross-section figure in each hole of the present utility model;

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

By Fig. 3, Fig. 4 as seen: the utility model comprises nib; The end face of described nib 1 is a circle, is also comprising more than at least two, outside groove 11 on the circumference; The vertical cross-section of effective use degree of depth L of described nib 1 from top to bottom is turbination;

Describedly comprising also on the circumference that more than at least two, outside groove 11 is 3;

The shape that the utility model changes the die hole is exactly the shape that changes waste material in the die hole, make regular circular hole waste material become irregular, strengthen friction, just can control waste material in die the hole in and stay die and break away from the punching pin end face and do not jump out the die working face, can be to the product formation destruction of punching press.About die hole effective uses the degree of depth as 5mm (stamping material is as in the 3mm), for die-cut material when thin (0.5 ~ 1.2mm), because of changing regular circular hole is the irregular friction that increases, the waste material sheet that overstocks in the die hole is too much, punching pin resistance when die-cut is excessive, particularly less than the circular punching pin of 2.5mm, very easily fracture,, can prevent to damage punching pin because of resistance is excessive so utilize thin awl processing to reduce waste material sheet number overstocked in the die hole.

Claims

1. a cold punching mesh mould comprises nib; It is characterized in that: the end face of described nib (1) is a circle, is also comprising more than at least two, outside groove (11) on the circumference; The vertical cross-section of effective use degree of depth (L) of described nib (1) from top to bottom is turbination.

2. cold punching mesh mould according to claim 1 is characterized in that: describedly comprising also on the circumference that more than at least two, outside groove (11) is 3.