CN2880305Y

CN2880305Y - Mould structure

Info

Publication number: CN2880305Y
Application number: CN 200620054123
Authority: CN
Inventors: 张爱霞
Original assignee: Mitac Precision Technology Shunde Ltd
Current assignee: Mitac Precision Technology Shunde Ltd
Priority date: 2006-01-20
Filing date: 2006-01-20
Publication date: 2007-03-21
Anticipated expiration: 2016-01-20

Abstract

This utility model discloses a mould structure which includes: an arc mould, which comprises a block in upper mould. The lower mould is equipped with an arc plunger. When closing the mould, the arc mould plunger presses the folding end of products to form a radian angle; a folding mould, which arranges a sliding block in the upper mould. The lower mould is fixed with a folding plunger and buoyancy lift block. When opening the mould, the mould butts against one end of the products, the lower mould plunger presses the other end of product for folding; a reverse folding mould, when closing the mould, the plunger presses the folding end against the unfolding end, and flattens the radian angle of the folding end; and ensure the two ends of the processing item closely superimposed. During the reverse folding process, the product easily gets scratched and produce iron filings due to the folding radian decreases the friction between the product and mould, so increases the rate of finished product.

Description

A kind of mould structure

Technical field

The utility model relates to a kind of mould structure, and particularly a kind of reflexed flattens, protect and self be difficult for ruined mould structure.

Background technology

In the known technology, flattening the mould that needs to use as Figure 1A-Fig. 1 C product reflexed is: a deburr or coin mould 11, it is to be provided with a deburr or coin drift 113 in counterdie 112, during matched moulds, deburr or coin upper mould 111, counterdie 112 are clamped product, and deburr or coin drift 113 needs the burr of bending ends to tie product 14; One bending, 90 degree moulds 12, its patrix 121 is established a slide block 123, Bending Mould counterdie 122 is provided with Bending punch 124, during matched moulds, the slide block 123 of Bending Mould patrix 121 skids off with counterdie buoyance lift piece 125 and pushes down material 14, slide block 123 by counterdie buoyance lift piece 125 be depressed into up after, the strength of patrix by the punch press transmission is depressed into Bending punch with counterdie buoyance lift piece 125 and protrudes below the die face height, has promptly begun bending; One reflexed pressing die 13, its patrix 131 has a reflexed to flatten drift 133,132 pairs of reflexed pressing die counterdies should be provided with a nib 134 by reflexed pressing drift 133, during matched moulds, the product 14 of bending is placed on reflexed pressing die counterdie 132, above-mentioned reflexed drift 133 to bending end not, makes two ends closely superimposed at product 14 bending ends.

The above-mentioned shortcoming that produces is: when reflexed flattened, reflexed flattened drift 133 contact products 14 bending ends, and it can be scraped burr, and the burr of its generation will weigh product 14 wounded, makes the product fraction defective very high, even causes product rejection.

Summary of the invention

For addressing the above problem, the utility model proposes a kind of mould structure, it will reduce the friction between mould and the product, improve the product yield.

The technical solution of the utility model is: a kind of mould structure, and it comprises: a dozen circular arc moulds, it is to establish a patrix to go into piece in patrix, be provided with a dozen circular arc drifts in the counterdie, during matched moulds, upper and lower mould is pushed down product, makes the circular arc drift product bending end is extruded a radian; One Bending Mould, its patrix is established a slide block, counterdie is provided with Bending punch and buoyance lift piece, during die sinking, last mode slider skids off against living product one end, the counterdie drift with product not against other end bending; One reflexed pressing die, patrix have a reflexed to flatten drift, and counterdie is to being provided with a nib by drift, during matched moulds, the product of bending is placed on counterdie, above-mentioned reflexed drift is pressed to not bending end with product bending end, bending end circle radian flattens, and makes two ends closely coincide.

In the above-mentioned patrix of playing the circular arc mould, leave a space for making the circular arc drift; Conveniently making the circular arc drift extrudes a radian with product bending end.

In the slide block of above-mentioned Bending Mould, the ad hoc parallactic angle of keeping away; In product bending process, when Bending punch was pressed to mode slider with product bending end, the parallactic angle of keeping away ad hoc in the slide block was just given product bending end radian slot milling, and the bending process is finished smoothly.

In the reflexed applanation process, because the radian of product has reduced the friction between product and mould, product is difficult for being scraped injuring and is difficult for producing iron filings, and its product yield of producing is improved.

Description of drawings

Deburr or coin mould schematic diagram in Figure 1A known technology.

Bending Mould schematic diagram in Figure 1B known technology.

Reflexed pressing die schematic diagram in Fig. 1 C known technology.

Play circular arc mould schematic diagram in Fig. 2 A the utility model.

Bending Mould schematic diagram in Fig. 2 B the utility model.

Reflexed pressing die schematic diagram in Fig. 2 C the utility model.

Press 1/4R angle schematic diagram in Fig. 3 the utility model.

Intention when reflexed flattens in Fig. 4 the utility model.

The specific embodiment

Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail.

Shown in Fig. 2 A-2C, a kind of mould structure, it comprises: a dozen circular arc moulds 21, it is to establish one to go into piece 214 in patrix 211, beat in the circular arc lower mould 212 and be provided with a dozen circular arc drifts 213, product 14 is placed on to be beaten on the circular arc counterdie 212, goes into piece 214 and make circular arc drift 213 to be arranged in parallel, simultaneously perpendicular to product 14; During matched moulds, beat circular arc upper mould 211, counterdie 212 is pushed down product 14, make circular arc drift 213 product 14 bending ends extruded a 1/4R radian 141 (as Fig. 3).One Bending Mould 22, its patrix 221 is established a slide block 223, and Bending Mould counterdie 222 is provided with Bending punch 224 and buoyance lift piece 225, and slide block 223 is a wedge body, and it is provided with the bending beading against one jiao that lives product 14, so that product 14 is bent into the right angle; During die sinking; slide block 223 in the Bending Mould patrix 221 skid off with counterdie buoyance lift piece 225 against living product 14 1 ends; punch press is descending; last mode slider 223 is up; until flat with last die face; the strength of patrix this moment by the punch press transmission again with counterdie buoyance lift piece 225 to pressing down, shorter than the Bending punch 224 that protrudes die face until it, material 14 just will begin bending. until being bent into the right angle.One reflexed pressing die 23, its patrix 231 have a reflexed to flatten drift 233, and reflexed pressing die patrix 231 is made up of two parts, and a part is fixing, promote reflexed pressing drift 233 by the structure of another part activity; It is the cuboid of a unfilled corner that this reflexed flattens drift 233, and unfilled corner makes reflexed pressing drift 233 be divided into the rear and front end, and front end is flat, and the rear end is thick than front end; Defective part is a streamlined plane of leading at front end, and the rear end is a plane, and reflexed pressing die counterdie 232 corresponding reflexeds flatten drift 233 front ends and are provided with a nib 234; During matched moulds, the product 14 of bending is placed on the reflexed pressing die counterdie 232, in the reflexed applanation process, what contact with product 14 earlier is that reflexed pressing drift 233 front ends are led plane, it is slowly with product 14 bendings and be directed to the back transverse plane, and reflexed flattens drift 233 front ends and enters in reflexed pressing die counterdie 232 nibs 234 then, and back transverse plane is pressed to not bending end with product 14 bending ends, bending end 1/4R radian 141 flattens, and makes two ends closely superimposed (as Fig. 4).

In the above-mentioned patrix 211 of playing circular arc mould 21, leave a space for making circular arc drift 213; Conveniently making circular arc drift 213 extrudes a 1/4R radian 141 with product 14 bending ends.

In the slide block 223 of above-mentioned Bending Mould 22, the ad hoc parallactic angle 2231 of keeping away; In product 14 bending processes, when Bending punch 224 was pressed to slide block 223 with product 14 bending ends, the parallactic angle 2231 of keeping away ad hoc in the slide block 223 was just given product bending end 1/4R radian 141 slot millings, and the bending process is finished smoothly.

In the reflexed applanation process, because the 1/4R radian 141 of product 14 has reduced the friction that product 14 and reflexed flatten 233 of drifts, product 14 is difficult for by scratch, and its product yield of producing is improved.

Claims

1. mould structure, it comprises: a dozen circular arc moulds are provided with a dozen circular arc drifts in the counterdie; One Bending Mould, its patrix is established a slide block, and counterdie is provided with Bending punch and buoyance lift piece; One reflexed pressing die, patrix have a reflexed to flatten drift, and counterdie is characterized in that being provided with a nib by drift: in the patrix of playing the circular arc mould, establish a patrix and go into piece.

2. mould structure according to claim 1 is characterized in that: in the patrix of playing the circular arc mould, leave a space for making the circular arc drift.

3. mould structure according to claim 1 is characterized in that: in the slide block of Bending Mould, and the ad hoc parallactic angle of keeping away.