CN1327985C

CN1327985C - Punching-pressing composite mould

Info

Publication number: CN1327985C
Application number: CNB2005100430142A
Authority: CN
Inventors: 聂福荣
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2005-07-19
Filing date: 2005-07-19
Publication date: 2007-07-25
Anticipated expiration: 2025-07-19
Also published as: CN1733385A

Abstract

The present invention relates to a composite punching die. A lower die is composed of a lower die seat, a positioning block, a convex die fixing plate, a bent convex die, a lower ejecting device, a pull lever, a guide post, a side sliding post, a horizontal punching head, restoring spring and a limited pin, wherein the positioning block is arranged on the lower die seat, the convex die fixing plate is arranged in the central position of the lower die seat through the positioning of the positioning block, and bent convex die is arranged in the central position of the lower die seat through the convex die fixing plate. Furthermore, the lower ejecting device is arranged at the circumference of the bent convex die, the pull lever and the guide post are directly arranged on the lower die seat, the side sliding post is directly arranged in the positioning block, and upper end surface of the bent convex die is lower than the upper end surface of the positioning block from two stock thicknesses to three stock thicknesses. An upper die is composed of an upper die seat, a die holder, a swaging spring, a bent concave die, a swaging block, an inclined wedge and a guide sleeve, wherein the die holder is arranged in the center of the upper die seat through a positioning hole of the upper die seat, the swaging spring is arranged in the die holder, and the bent concave die is arranged below the center of the upper die seat. Furthermore, the swaging block is arranged in the bent concave die, the inclined wedge is arranged on the side edge of the upper die seat through screws and a positioning groove which is positioned on the side edge of the upper die seat, and the guide sleeve is arranged below the upper die seat through the positioning hole of the upper die seat. Besides, the upper die and the lower die are installed into one combining die through the guide sleeve and the guide post.

Description

A kind of composite punching die

Technical field

The present invention relates to a kind of diel, particularly relate to the composite die structure of several stamping procedures.

Background technology

At present, the basic stamping procedure that is shaped for side arm band aperture bool is: blanking, bending, punching specifically have following two kinds of forming technology schemes:

(1) blanking, bending, punching single die are shaped;

(2) blanking, punching are earlier compound, and crooked single die is shaped;

By analyzing, scheme (1) mould structure is simple, but needs 3 secondary moulds, and efficient is very low, and can not produce high-precision stamping parts; Scheme (2) structure is complicated a little, needs 2 secondary moulds, and efficient increases, and precision still can not meet the demands.These two kinds of schemes can not satisfy the requirement of modern production high accuracy, low cost, high benefit far away.

Summary of the invention

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

The present invention is a kind of composite punching die, comprise counterdie and patrix two parts, counterdie is by die shoe 1, be installed in locating piece 2 on the die shoe 1 by locating hole on the die shoe 1 and screw 17, the punch retainer 21 of location and installation on die shoe 1 center by locating piece 2, be installed in crooked punch 20 on die shoe 1 center by punch retainer 21, be installed in crooked punch 20 following backing-out punch 18 on every side, be directly installed on the drawbar 19 and the guide pillar 16 of die shoe 1 and be directly installed on sideslip post 3 in the locating piece 2, horizontal drift 22, back-moving spring 5, spacer pin 4 is formed, and the upper surface A of crooked punch 20 is lower than the about 2-3 of locating piece 2 a upper surface B sotck thinkness; Patrix by upper bolster 8, by the locating hole of upper bolster 8 be installed in upper bolster 8 centers die shank 12, be installed in binder spring 11 in the die shank 12, be installed in the following crooked die 9 of upper bolster 8 central authorities, be installed in binder block 10 in the crooked die 9, be installed in the guide pin bushing 15 that the wedge 6 of upper bolster 8 sides, locating hole by upper bolster 8 be installed under the upper bolster 8 by the locating slot of screw 7 and upper bolster 8 sides and form by screw 13 and pin 14, patrix is by guide pin bushing 15 and guide pillar 16 and the installation of counterdie matched moulds.

Fast mold change mechanism is made up of sideslip post 3, back-moving spring 5, horizontal drift 22 and spacer pin 4.

Usefulness of the present invention:

Can first blanking for side arm band aperture bool forming technology scheme, crooked again, punching is compound, needs 2 secondary moulds so only, blanking still adopts existing method, so its core technology designs bending, punching hole composite die structure exactly.Because the hole is present in the sidewall of part, can only adopt the side blow hole, because boring ratio is less, the side blow head fractures easily, so the side blow head adopts the quick-changing type structure; Bending must be finished before side blow, and therefore, the sidewall of crooked die must be slotted, so that allow the side blow punch pass through, finished the compound of two kinds of operations smoothly.

The quick-changing type punch structure has been adopted in the side blow hole, and structure is simpler, and realized the compound of crooked, side blow hole, has satisfied the requirement of modern production high accuracy, low cost, high benefit.

Description of drawings

Fig. 1 is the die structure dwg of the embodiment of the invention, and Reference numeral and corresponding name are called: die shoe 1, locating piece 2, sideslip post 3, spacer pin 4, back-moving spring 5, wedge 6, screw 7, upper bolster 8, crooked die 9, binder block 10, binder spring 11, die shank 12, pin 13, screw 14, guide pin bushing 15, guide pillar 16, screw 17, following backing-out punch 18, pressure pin 19, crooked punch 20, punch retainer 21, horizontal drift 22.

The specific embodiment

As shown in Figure 1, composite punching die of the present invention comprises counterdie and patrix two parts.Counterdie is by die shoe 1, be installed in locating piece 2 on the die shoe (1) by locating hole on the die shoe 1 and screw 17, the punch retainer 21 of location and installation on die shoe 1 center by locating piece 2, be installed in crooked punch 20 on die shoe 1 center by punch retainer 21, be installed in crooked punch 20 following backing-out punch 18 on every side, be directly installed on the drawbar 19 and the guide pillar 16 of die shoe 1 and be directly installed on sideslip post 3 in the locating piece 2, horizontal drift 22, back-moving spring 5, spacer pin 4 is formed, and the upper surface A of crooked punch 20 is lower than the about 2-3 of locating piece 2 a upper surface B sotck thinkness; Patrix by upper bolster 8, by the locating hole of upper bolster 8 be installed in upper bolster 8 centers die shank 12, be installed in binder spring 11 in the die shank 12, be installed in the following crooked die 9 of upper bolster 8 central authorities, be installed in binder block 10 in the crooked die 9, be installed in the guide pin bushing 15 that the wedge 6 of upper bolster 8 sides, locating hole by upper bolster 8 be installed under the upper bolster 8 by the locating slot of screw 7 and upper bolster 8 sides and form by screw 13 and pin 14, patrix is by guide pin bushing 15 and guide pillar 16 and the installation of counterdie matched moulds.

Good blank is placed on the crooked punch 20 by locating piece 2 location falling, the slide block of forcing press (not indicating among the figure) drives and moves downward by being labeled as 6～15 patrixes of forming in the accompanying drawing 1, binder block 10 at first touches blank, and binder spring 11 begins to push down blank; Following crooked die 9 touches blank to continue to move downward beginning crooked, carrying out along with bending, when the minimum point that goes downwards to the bar hole on crooked die 9 side arms when patrix is lower than the minimum point of horizontal drift 22, wedge 6 contacts with the inclined-plane of sideslip post 3, horizontal drift 22 begins to move right by it and locating piece 2 matched in clearance guiding, and when horizontal drift 22 passed bar hole on crooked die 9 side arms, the side blow hole began, up to the complete matched moulds of upper and lower mould, crooked, horizontal punching is all finished.

Opposite during backhaul, it is that the patrix that 6～15 parts are formed moves upward that the slide block of forcing press drives by Reference numeral among Fig. 1, mainly elastic force by binder spring 11 and binder block 10 and forcing press air cushion (among the figure sign) by pressure pin 19 and following backing-out punch 18 finish bool discharging, finish resetting of horizontal drift 22 by the elastic force and the spacer pin 4 of back-moving spring 5.

Claims

1, a kind of composite punching die, comprise counterdie and patrix two parts, it is characterized in that counterdie is by die shoe (1), be installed in locating piece (2) on the die shoe (1) by locating hole on the die shoe (1) and screw (17), the punch retainer (21) of location and installation on die shoe (1) center by locating piece (2), be installed in crooked punch (20) on die shoe (1) center by punch retainer (21), be installed in crooked punch (20) following backing-out punch (18) on every side, be directly installed on the drawbar (19) and the guide pillar (16) of die shoe (1) and be directly installed on sideslip post (3) in the locating piece (2), horizontal drift (22), back-moving spring (5), spacer pin (4) is formed, and the upper surface (A) of crooked punch (20) is lower than locating piece (2) upper surface (B) about 2-3 sotck thinkness; Patrix is by upper bolster (8), be installed in the die shank (12) at upper bolster (8) center by the locating hole of upper bolster (8), be installed in the binder spring (11) in the die shank (12), be installed in crooked die (9) under upper bolster (8) central authorities by screw (13) and pin (14), be installed in the binder block (10) in the crooked die (9), be installed in the wedge (6) of upper bolster (8) side by the locating slot of screw (7) and upper bolster (8) side, the guide pin bushing (15) that locating hole by upper bolster (8) is installed under the upper bolster (8) is formed, and patrix is by guide pin bushing (15) and guide pillar (16) and the installation of counterdie matched moulds.

2, a kind of composite punching die according to claim 1 is characterized in that fast mold change mechanism is made up of sideslip post (3), back-moving spring (5), horizontal drift (22) and spacer pin (4).