CN102319810A

CN102319810A - Punching mold time delay falling mechanism

Info

Publication number: CN102319810A
Application number: CN201110241009A
Authority: CN
Inventors: 赵彬
Original assignee: SHANGHAI KESEN AUTOMOBILE PARTS CO Ltd; SHANGHAI HUAZHUANG MOULD CO Ltd
Current assignee: Guangzhou Youdejia Mould Technology Co ltd
Priority date: 2011-08-22
Filing date: 2011-08-22
Publication date: 2012-01-18
Anticipated expiration: 2031-08-22
Also published as: CN102319810B

Abstract

The invention relates to a punching mold time delay falling mechanism, which comprises a brake part and a work part, wherein the brake part is an elastic body arranged in an upper mold seat, the work part is arranged on a lower mold edge pressing ring and comprises a base, a slide block, a return nitrogen spring, fixed plates and a press plate, the base is fixedly arranged on the lower mold edge pressing ring, the slide block is glidingly assembled in the base, the lower end surface of the slide block is a sliding surface, the slide block slides in a direction parallel to the guide surface of the base, the return nitrogen spring is arranged inside the slide block, the upper inclined plane of the back side of the slide block is a driving surface, the driving surface is in driving matching with a driving block arranged between the base and the slide block, the front side inclined plane of the slide block is a driving surface, the driving surface is glidingly matched with an upper mold pressing material plate, the driving block is arranged between the base and the slide block and is fixed in the base through a position limiting plate arranged at the upper part of the back side of the base, a driving surface is arranged on the driving block, is inclined by taking the horizontal direction as the reference and is glidingly matched with the driving surface on the slide block, the fixed plates are arranged at both sides of the base, the inner sides of the fixed plates are sliding surfaces, and the fixed plates slide in a direction parallel to both sides of the slide block and the driving block, the press plate is arranged at the upper parts of the fixed plates, and the upper part of the inner side of the press plate is a sliding surface and is glidingly matched with the step surface of the upper part of the slide block.

Description

A kind of diel time-delay falls mechanism

Technical field

The present invention relates to the diel field, particularly the diel time-delay falls mechanism.

Background technology

Along with the development of automobile industry and the maturation day by day of Sheet Metal Forming Technology; The shape of product becomes increasingly complex; Required precision improves constantly, the mould structure that in existing product, usually has some need in drawing work, realize upper overturning, and this kind structure needs punch and blank holder as holding pad under the flange; Walk to expect the wrinkling folded material phenomenon of too fast appearance for preventing it, patrix also need increase the holding pad structure.Through facts have proved; Mould is after on earth, and along with the lathe top shoe is opened, the patrix holding pad is because the relation of stroke is pressed on the product always; Remain static comparatively speaking always; And the counterdie blank holder is to do along with opening of slide block to move upward, and the operation part that work is accomplished directly is squeezed on the patrix holding pad, and product is damaged by pressure.If slide block can be locked after on earth; The time that pause is arranged; Just can between patrix holding pad and counterdie blank holder, place cushion block and guarantee its relative altitude with pneumatic or manual method; But because this part is a mechanical press at the lathe of manufacturer production, slide block can't be realized locking function after on earth, in this time, can't carry out any operation.And mould is in the process of pressing down, and the distance between patrix holding pad and the counterdie blank holder is by little and big variation, and until mould state on earth, it is maximum that distance reaches.Therefore, a kind of mechanism of exigence can press down at mould and be in static or rollback in the process,, gets involved automatically between patrix holding pad and the counterdie blank holder on earth under the state at mould, guarantees its relative altitude.

Summary of the invention

The solution of the technical problem proposition that the objective of the invention is to damage product by pressure to patrix holding pad after the mould die sinking and resetting of counterdie blank holder.

Technical scheme of the present invention is: a kind of diel time-delay falls mechanism, and this structure comprises: brake portion and working portion; Said brake portion is an elastomer, is installed in the upper bolster; Said working portion is installed on the counterdie blank holder; Said working portion comprises: be fixedly mounted on the pedestal on the counterdie blank holder; Be slidedly assemblied in the slide block in the pedestal, this slide block lower surface be sliding surface and with foot guide face parallel sliding, be arranged on the inner backhaul nitrogen spring of slide block; Slide block rear side upper inclined surface is a drive surface, and this drive surface drives and cooperates with being arranged on drive block between pedestal and the slide block, and inclined-plane, slide block front side is a drive surface, and this drive surface and patrix holding pad are slidingly matched; This drive block is arranged between pedestal and the slide block, and the limiting plate of upper lateral part is fixed in the pedestal behind the pedestal by being installed in, and drive surface is set on the drive block, drive surface and inclined, and be slidingly matched with drive surface on the slide block; Be arranged on the fixed head of pedestal both sides, this fixed head inboard is a sliding surface, with slide block and drive block both sides parallel sliding; Be arranged on the pressing plate on fixed head top, the pressing plate inside upper part is a sliding surface, is slidingly matched with slide block upper stage terrace.

Further, above-mentioned brake portion is an elastomer, specifically is nitrogen spring.

Further, above-mentioned working portion is the Wedge mechanism that drive block and slide block are combined.

Further, said mechanism presses down at mould and realizes counter motion in the process, in mould die sinking process initial stage controlled stroke, realizes the static of working portion, thereby reaches delay effect.

The invention has the beneficial effects as follows: solved the reseting movement of patrix holding pad and counterdie blank holder after the mould die sinking and the situation of damaging product by pressure; This mechanism is the mechanical type automechanism; Need not consider lathe mated condition or artificial manual operation; Reduce working strength of workers, improved production efficiency, had good practicality.

Description of drawings

Fig. 1 is an axis side view of the present invention.

Fig. 2 is that the present invention is installed in the cutaway view in the mould.

Fig. 3 is the mould pressed status.

Fig. 4 is the mould die opening state.

1. upper bolster; 2. patrix holding pad; 3. nitrogen spring; 4. pedestal; 5. slide block; 6. backhaul nitrogen spring; 7. drive block; 8. fixed head; 9. pressing plate; 10. limiting plate; 11. counterdie blank holder; 12. convex mould base; 13. flanging die; 14. die shoe; 20. brake portion; 30. working portion.

The specific embodiment

Below in conjunction with accompanying drawing embodiments of the invention are further detailed.

The present invention provides a kind of diel time-delay to fall mechanism, and said time-delay falls mechanism and comprises: brake portion 20 and the working portion 30 that is positioned at brake portion 20 belows.

Said brake portion 20 is an elastomer, and this example is for being installed in the nitrogen spring 3 in the upper bolster 1; Said working portion 30 is installed on the counterdie blank holder 11; Said working portion 30 comprises: be fixedly mounted on the pedestal 4 on the counterdie blank holder 11; Be slidedly assemblied in the slide block 5 in the pedestal 4, these slide block 5 lower surfaces be sliding surface and with pedestal 4 spigot surface parallel sliding, be arranged on the inner backhaul nitrogen spring 6 of slide block 5; Slide block 5 rear side upper inclined surface are drive surface, this drive surface and be arranged on pedestal 4 and slide block 5 between drive block 7 be slidingly matched, inclined-plane, slide block 5 front side is a drive surface, this drive surface and patrix holding pad 2 are slidingly matched; This drive block 7 is arranged between pedestal 4 and the slide block 5, and is fixed in the pedestal 4 by the limiting plate 10 that is installed in pedestal 4 back upper lateral parts, on the drive block 7 drive surface is set, drive surface and inclined, and be slidingly matched with drive surface on the slide block 5; Be arranged on the fixed head 8 of pedestal 4 both sides, these fixed head 8 inboards are sliding surface, with slide block 5 and drive block 7 both sides parallel sliding; Be arranged on the pressing plate 9 on fixed head 8 tops, pressing plate 9 inside upper part are sliding surface, are slidingly matched with slide block 5 upper stage terraces.

Like Fig. 1, shown in Figure 2, time-delay mechanism of the present invention is different from traditional Wedge mechanism, and this mechanism as drive force source, makes it have delay function with elastomer.This mechanism's drive block 7 is arranged in the pedestal 4 with slide block 5; Do its spacing and guiding by fixed head 8, pressing plate 9, limiting plate 10; Because the contact-making surface of drive block 7 and slide block 5 is drive surface; This drive surface and inclined are done horizontal motion at the effect sliding block 5 of nitrogen spring 3 power, and drive block is done moving up and down perpendicular to horizontal direction.As brake portion, slide block 5 both sides are equipped with the drive surface that favours horizontal direction by nitrogen spring 3 in this mechanism, have realized that slide block 5 does the motion of both direction in the middle of the course of work.

This new structure also comprises backhaul nitrogen spring 6, and it is contained in the slide block 5, nitrogen spring piston rod contact pedestal 4, and gas compression in the nitrogen spring when slide block 5 is done horizontal motion, it does motion in the other direction under the effect of screen resilience, to make slide block 5 backhauls and promotion.

Describe in the face of the course of work of the present invention down.

The present invention presses down in the process at upper bolster 1 and patrix holding pad 2, and is as shown in Figure 3, and slide block 5 is because nitrogen spring 3 is done horizontal motion until contacting patrix holding pad 2 with the active force of drive block 7.At this moment patrix holding pad 2 contact slippers 5 front side drive surface, in continuing the process of pressing down, patrix holding pad 2 is just as drive part, and driving sliding block 5 is done motion in the other direction, promotes drive block 7 and does and move upward, and makes gases compression in the nitrogen spring 3.In upper bolster 1 contact counterdie blank holder 11 beginning drawing works; In drawing process; Counterdie blank holder 11 moves downward with mechanism's working portion 30, finishes beginning upper overturning technology until counterdie blank holder 11 contact convex mould bases 12, patrix holding pad 2 contact flanging dies 13 drawing works.

In the upper overturning technical process, upper bolster 1 is pushed down counterdie blank holder 11 and is contacted die shoe 14 with convex mould base 12 until convex mould base 12, and the end of upper overturning technology, mould are on earth.In this process, mechanism's working portion 30 moves downward with counterdie blank holder 11.Patrix holding pad 2 contact flanging dies 13, upper bolster is done and is moved upward relatively.As shown in Figure 2, on earth during state, patrix holding pad 2 reaches the state that slide block 5 can insert at mould, and the gas screen resiliences act on the drive block 7 in the nitrogen spring 3, thereby driving sliding block 5 is inserted below the patrix holding pads 2.

As shown in Figure 4, in the moulds open process, patrix holding pad 2 and counterdie blank holder 11 remain the relative distance of part height under the intervention of slide block 5, part is not damaged by pressure.Mould continues to open; Counterdie blank holder 11, convex mould base 12, patrix holding pad 2, nitrogen spring 3 strokes discharge and finish; Slide block 5 promotes drive block 7 return that moves up, under the effect of limiting plate 10 under the gas screen resilience effect of backhaul nitrogen spring 6; Limit its backward position, thereby accomplish a work period.

Claims

1. a diel time-delay falls mechanism, it is characterized in that this structure comprises: brake portion (20) and working portion (30);

Wherein brake portion (20) is an elastomer, and this elastomer is installed in the upper bolster (1), and this elastomer vertically is installed on horizontal direction;

Wherein working portion (30) is installed on the counterdie blank holder (11); Said working portion (30) comprising: be fixedly mounted on the pedestal (4) on the counterdie blank holder (11); Be slidedly assemblied in the slide block (5) in the pedestal (4); This slide block (5) lower surface be sliding surface and with pedestal (4) spigot surface parallel sliding, be arranged on the inner backhaul nitrogen spring (6) of slide block (5); Slide block (5) rear side upper inclined surface is a drive surface, this drive surface and be arranged on pedestal (4) and slide block (5) between drive block (7) be slidingly matched, slide block (5) inclined-plane, front side is a drive surface, this drive surface and patrix holding pad (2) are slidingly matched; This drive block (7) is arranged between pedestal (4) and the slide block (5); And be fixed in the pedestal (4) by the limiting plate (10) that is installed in pedestal (4) back upper lateral part; Drive block is provided with drive surface on (7), drive surface and inclined, and be slidingly matched with drive surface on the slide block (5); Be arranged on the fixed head (8) of pedestal (4) both sides, this fixed head (8) inboard is a sliding surface, with slide block (5) and drive block (7) both sides parallel sliding; Be arranged on the pressing plate (9) on fixed head (8) top, pressing plate (9) inside upper part is a sliding surface, is slidingly matched with slide block (5) upper stage terrace.

2. a kind of diel time-delay according to claim 1 falls mechanism, it is characterized in that said elastomer is nitrogen spring (3).

3. a kind of diel time-delay according to claim 1 falls mechanism, it is characterized in that, said working portion (30) is the Wedge mechanism that drive block (7) and slide block (5) are combined.