CN1927497A

CN1927497A - Cold stamping composite mold

Info

Publication number: CN1927497A
Application number: CN 200610043003
Authority: CN
Inventors: 聂福荣; 冯辉霞; 袁子洲; 刘德学; 张婷; 王玉兰
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2006-06-15
Filing date: 2006-06-15
Publication date: 2007-03-14

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, discharge spring 3, mould handle 4, first screw 5, first guide post 6, second screw 7, pin 8, convex-concave mould 9, discharge plate 10, guide muffle 12, lifter 22, spring 24 and pad plate 25; the lower mould is formed by second guide post 13, lower mould base 14, charge concave mould 15, third screw 16, bend concave mould 17, limit screw 18, support rod 19, lift spring 20, top plate 21, and baffle pin 23; the convex-concave mould 9 and the first guide post 6 are mounted under the upper mould base 1; the lifter 22 is mounted inside the convex-concave mould 9; the guide muffle 12 is mounted under the upper mould base 1; the second guide post 13 is mounted on the lower mould base 14; the charge concave mould 15 and bend convex mould 17 are mounted at the center of lower mould base; and the upper mould via second guide post 13 and guide muffle 12 is matched with the lower mould.

Description

A kind of cold pressing composite die

Technical field

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

Background technology

The basic technology scheme that is shaped for U-shaped bool is first blanking at present, and the crooked single operation in back is shaped, and this scheme mould structure is simple, needs 2 secondary moulds, and precision and efficient are all lower.

Summary of the invention

The purpose of this invention is to provide a kind of mould structure.

A kind of cold pressing composite die, comprise upper die and lower die two parts, patrix is by upper bolster 1, discharging screw 2, discharging spring 3, die shank 4, first screw 5, first guide pillar 6, second screw 7, pin 8, punch-die 9, stripper 10, guide pin bushing 12, backing-out punch 22, spring 24, backing plate 25 is formed, counterdie is by second guide pillar 13, die shoe 14, blanking die 15, the 3rd screw 16, crooked die 17, stop screw 18, pressure pin 19, head part spring 20, top board 21, pin stop 23 is formed, the punch-die 9 and first guide pillar 6 are installed in upper bolster respectively 1 time, backing-out punch 22 is installed in 9 li of punch-dies, and guide pin bushing 12 is directly installed on upper bolster 1 time; The centre that second guide pillar 13 is directly installed on the die shoe 14, blanking die 15 and crooked punch 17 are installed in die shoe 14 respectively; Patrix is by the guide pin bushing 12 and second guide pillar 13 and counterdie matched moulds.

Usefulness of the present invention: can make blanking and crooked combined shaping for U-shaped bool forming technology scheme, this scheme only needs 1 secondary mould, and mould structure is simple, and precision and efficient are all higher.

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, discharging spring 3, die shank 4, first screw, 5, the first guide pillars, 6, the second screws 7, pin 8, punch-die 9, stripper 10, blank 11, guide pin bushing 12, the second guide pillars 13, die shoe 14, blanking die 15, the three screws 16, crooked punch 17, stop screw 18, pressure pin 19, head part spring 20, top board 21, backing-out punch 22, pin stop 23, spring 24, backing plate 25.

The specific embodiment

As shown in Figure 1, cold punching die of the present invention, comprise upper die and lower die two parts, patrix is by upper bolster 1, be directly installed on the die shank 4 at center on the upper bolster 1 by the locating hole and first screw 5, be installed in guide pillar 6 under the upper bolster 1 respectively by locating hole and backing plate 25 and second screw 7 and pin 8, guide pin bushing 12, punch-die 9, be installed in the spring 24 and the backing-out punch 22 of 9 li of punch-dies, being installed in 1 time punch-die of upper bolster (9) stripper (10) on every side by discharging screw 2 and discharging spring 3 forms, backing-out punch (22) double as blanking die is by first guide pillar, 6 guiding.Counterdie by die shoe 14, by locating hole be directly installed on second guide pillar 13 on the die shoe 14, by positioning table and the 3rd screw 16 be installed in die shoe 14 centres blanking die 15, by stop screw 18 be installed in 15 li of blanking dies crooked punch 17, be installed in head part spring 20 and top board 21 between blanking die 15 and the crooked punch 17, be directly installed on pin stop 23 on the blanking die 15, the pressure pin (19) that is installed in 14 li of die shoes forms, crooked punch 17 is movable.Patrix is by the guide pin bushing 12 and second guide pillar 13 and counterdie matched moulds.

It is 1-10 that the slide block (not shown) of forcing press drives by Reference numeral among Fig. 1,12,22,24, the patrix that 25 parts are formed moves downward, stripper 10 and backing-out punch 22 at first touch the upper surface that is placed on the blank 11 on blanking die 15 and the crooked punch 17 it are compressed, and patrix continues that descending to be that punch-die 9 moves downward about 1.5 material thick, finishes the part blanking; Punch-die 9 continues descendingly to begin to be bent to that to finish bending be the upper surface that backing plate 25 lower surfaces touch backing-out punch 22, the power that acts on the crooked punch 17 at stop screw 18 and pressure pin 19 acting in conjunction lower supporting rods 19 acts on power on the crooked punch 17 greater than spring 24 by backing-out punch 22 and blank 11 before this, so crooked punch 17 does not move; Patrix continues descending, because backing plate 25 lower surfaces are that rigidity contacts with the upper surface of backing-out punch 22, and the active force of pressure pin 19 is an elastic force, and backing-out punch 22 contacts with die shoe 14 upper surfaces with the lower surface that crooked punch 17 moves downward crooked punch 17 simultaneously like this, finishes all the other blankings.This moment, press ram arrived bottom dead centre, and forcing press drives the patrix backhaul, mainly finished the discharging of waste material and blank by discharging spring 3 and stripper 10, finished ejecting of workpiece by head part spring 20 and top board 21 and spring 24 and backing-out punch 22.

Claims

1, a kind of cold pressing composite die, comprise upper die and lower die two parts, patrix is by upper bolster (1), discharging screw (2), discharging spring (3), die shank (4), first screw (5), first guide pillar (6), second screw (7), pin (8), punch-die (9), stripper (10), guide pin bushing (12), backing-out punch (22), spring (24), backing plate (25) is formed, counterdie is by guide pillar (13), die shoe (14), blanking die (15), the 3rd screw (16), crooked die (17), stop screw (18), pressure pin (19), head part spring (20), top board (21), pin stop (23) is formed, it is characterized in that punch-die (9) and first guide pillar (6) are installed in respectively under the upper bolster (1), backing-out punch (22) is installed in punch-die (9) lining, and guide pin bushing (12) is directly installed under the upper bolster (1); The centre that second guide pillar (13) is directly installed on that die shoe (14) is gone up, blanking die (15) and crooked punch (17) are installed in die shoe (14) respectively; Patrix is by guide pin bushing (12) and second guide pillar (13) and counterdie matched moulds.