CN100427239C

CN100427239C - Composite cold stamping mold

Info

Publication number: CN100427239C
Application number: CNB2006100430024A
Authority: CN
Inventors: 聂福荣; 靳伍银; 阎峰云; 冯辉霞; 马栋林; 王毅
Original assignee: 兰州理工大学
Priority date: 2006-06-15
Filing date: 2006-06-15
Publication date: 2008-10-22
Also published as: CN1927496A

Abstract

The invention relates to a compound cold punching mould. Wherein, it comprises upper and lower moulds; the upper mould is formed by upper mould base 1, discharge screw 2, pad plate 3, mould handle 4, first screw 5, first guide post 6, second screw 7, pin 8, convex-concave mould 9, discharge plate 10, lift block 23, first spring 25, second spring 26, lifter 27, guide muffle 28, and third spring 29; the lower mould is formed by concave mould 11, top plate 12, third screw 13, positioning pin 14, lower mould base 15, fixing plate 16, limit screw 17, convex mould 18, support rod 19, lift spring 20, bend convex mould, second guide post 22, and baffle pin 24; the convex-concave mould 9 and the first guide post 6 are mounted under the upper mould base 1; the lift block 22 and the lifter 27 are mounted inside the convex-concave mould 9; the guide muffle 28 is mounted under the upper mould base 1; the second guide post 13 is mounted on the lower mould base 15; the concave mould 11 is mounted on the lower mould base; the convex mould 18 and the bend convex mould 21 are mounted inside the concave mould 11; and the lower mould via second guide post 22 and guide muffle 28 is matched with the upper mould.

Description

A kind of composite cold stamping mold

Technical field

The present invention relates to a kind of composite cold stamping mold, particularly relate to the composite die structure of multiple cold stamping operation.

Background technology

The basic technology scheme that is shaped for bottom surface U-shaped bool with holes has three at present:

(1) blanking, bending, the single operation of punching are shaped;

(2) blanking, punching are compound, and crooked more single operation is shaped;

(3) blanking list operation is shaped, crooked again, punching combined shaping.

Scheme (1) mould structure is simple, needs 3 secondary moulds, and efficient and precision are all lower; Scheme (2) and (3) structure are complicated a little, need 2 secondary moulds, and efficient and precision all increase.But these three kinds of schemes can not satisfy the modern production high accuracy far away, low cost, the requirement of high benefit.

Summary of the invention

The purpose of this invention is to provide a kind of mould structure, can satisfy the modern production high accuracy preferably, low cost, the requirement of high benefit.

The present invention is a kind of composite cold stamping mold structure, comprise upper die and lower die two parts, patrix by upper bolster 1, discharging screw 2, backing plate 3, die shank 4, screw 5, guide pillar 6, screw 7, pin 8, punch-die 9, stripper 10, angled slide block 23, spring 25, spring 26, backing-out punch 27, guide pin bushing 28 form, spring 29 is formed, wherein punch-die 9 and guide pillar 6 be installed in upper bolster respectively 1 time, angled slide block 23 and backing-out punch 27 is installed in 9 li of punch-dies, guide pin bushing 28 is directly installed on upper bolster 1 time.

Counterdie by die 11, top board 12, screw 13, alignment pin 14, die shoe 15, fixed head 16, stop screw 17, punch 18, pressure pin 19, head part spring 20, crooked punch 21, guide pillar 22, pin stop 24 form, wherein guide pillar 22 is directly installed on the die shoe 15, die 11 is directly installed on the die shoe 15, punch 18 and crooked punch 21 are installed in 11 li of dies.Counterdie is by guide pillar 22 and guide pin bushing 28 and Ccope closing machine.

Usefulness of the present invention

U-shaped bool forming technology scheme for bottom of which has holes can make blanking, bending and punching combined shaping, this scheme only needs 1 secondary mould, mould structure is also uncomplicated, precision and efficient are all higher, so its core technology designs blanking exactly, and crooked and punching hole composite die structure, promptly blanking is decomposed into and cuts tongue and cut-out, tongue, bending, punching, cut-out compound die are cut in design.

Description of drawings

Fig. 1 is the die structure dwg of the embodiment of the invention, and Reference numeral and corresponding name are called:

Upper bolster 1, discharging screw 2, backing plate 3, die shank 4, screw 5, guide pillar 6, screw 7, pin 8, punch-die 9, stripper 10, die 11, top board 12, screw 13, alignment pin 14, die shoe 15, fixed head 16, stop screw 17, punch 18, pressure pin 19, spring 20, crooked punch 21, guide pillar 22, angled slide block 23, pin stop 24, spring 25, spring 26, backing-out punch 27, guide pin bushing 28, spring 29.

The specific embodiment

As shown in Figure 1, composite cold stamping mold of the present invention comprises upper die and lower die two parts.Patrix by upper bolster 1, by the locating hole and first screw 5 be directly installed on center on the upper bolster 1 die shank 4, by locating hole and backing plate 3 and screw 7 and pin 8 be installed in guide pin bushing 28, guide pillar 6, punch-die 9, the spring 25 that is installed in 9 li of punch-dies, spring 26 and backing-out punch 27 under the upper bolster 1 and angled slide block 23 respectively, the stripper 10 that is installed in around 1 time punch-die of upper bolster 9 by discharging screw 2 and discharging spring 29 forms; Backing-out punch 27 double as cut off punch and punching concave die, are led by guide pillar 6.Counterdie is by die shoe 15, be directly installed on guide pillar 22 on the die shoe 15 by locating hole, be installed in the die 11 in die shoe 15 centres by screw 13 and alignment pin 14, be installed in the crooked punch 21 of 11 li of dies by stop screw 17, be installed in the fixed head 16 and the punch 18 of 11 li of dies by locating hole and pressure shoulder, be installed in spring 20 and top board 12 between die 11 and the crooked punch 21, be directly installed on the pin stop 24 on the die 11, the pressure pin 19 that is installed in 15 li of die shoes is formed, crooked punch 21 is movable.Patrix is by guide pin bushing 28 and guide pillar 22 and counterdie matched moulds.

It is 1-10 that the slide block (not shown) of forcing press drives by Reference numeral among Fig. 1,23, the patrix that 25-29 forms moves downward, stripper 10 and backing-out punch 27 and angled slide block 23 at first touch the blank upper surface that is placed on die 11 and the crooked punch 21 it are compressed, patrix continues that descending to be that punch-die 9 moves downward about 1.5 material thick, finishes and cuts tongue; Punch-die 9 continues descendingly to begin to be bent to that to finish bending be the upper surface that backing plate 3 lower surfaces touch backing-out punch 27, act on power crooked punch 21 on greater than spring 25 and spring 26 by backing-out punch 27 and blank in the power on the crooked punch 21 in stop screw 17 and pressure pin 19 actings in conjunction before this, so crooked punch 21 does not move; Patrix continues descending, because backing plate 3 lower surfaces are that rigidity contacts with the upper surface of backing-out punch 27, and the active force of pressure pin 19 is an elastic force, and backing-out punch 27 contacts with fixed head 16 upper surfaces with the lower surface that crooked punch 21 moves downward crooked punch 21 simultaneously like this, finishes and cuts off and punching.Press ram arrives bottom dead centre; forcing press drives the patrix backhaul; mainly finish the discharging of waste material and blank, finish ejecting of workpiece by head part spring 20 and top board 12 and spring 26 and backing-out punch 27 by discharging spring 29 and stripper 10 and spring 25 and angled slide block 23.

Claims

1, a kind of composite cold stamping mold, comprise upper die and lower die two parts, patrix is by upper bolster (1), discharging screw (2), backing plate (3), die shank (4), first screw (5), first guide pillar (6), second screw (7), pin (8), punch-die (9), stripper (10), angled slide block (23), first spring (25), second spring (26), backing-out punch (27), guide pin bushing (28), the 3rd spring (29) is formed, counterdie is by die (11), top board (12), the 3rd screw (13), alignment pin (14), die shoe (15), fixed head (16), stop screw (17), punch (18), pressure pin (19), head part spring (20), crooked punch (21), second guide pillar (22), pin stop (24) is formed, it is characterized in that punch-die (9) is installed under the upper bolster (1) by second screw (7) and pin (8), backing-out punch (27) is installed in punch-die (9) lining, angled slide block (23) and first spring (25) and second spring (26) are installed in backing-out punch (27) lining, first guide pillar (6) is installed in punch-die (9) and backing-out punch (27) lining by backing plate (3), and first guide pillar (6) cuts off backing-out punch (27) guiding of punch and punching concave die to double as; Die (11) by the 3rd screw (13) and alignment pin (14) be directly installed on die shoe (15) centre, fixed head (16) is installed in die (11) lining, punch (18) by fixed head (16) be installed in die (11) lining, crooked punch (21) by punch (18) and stop screw (17) be installed in die (11) lining, pressure pin (19) is installed in die shoe (15) and fixed head (16) lining, relative motion can take place with die (11) and die shoe (15) in crooked punch (21).