CN203381144U

CN203381144U - Reverse mould

Info

Publication number: CN203381144U
Application number: CN201320451430.6U
Authority: CN
Inventors: 杨静
Original assignee: Permanent Mould Co Ltd Is Held In Chongqing
Current assignee: Permanent Mould Co Ltd Is Held In Chongqing
Priority date: 2013-07-29
Filing date: 2013-07-29
Publication date: 2014-01-08
Anticipated expiration: 2023-07-29

Abstract

The utility model relates to an injection mould structure and in particular relates to a reverse mould. The reverse mould comprises a female mould and a male mould correspondingly matched with the female mould, a moulding cavity is formed between the male mould and the female mould, the male mould comprises an upper fixing plate, an upper ejector plate, a lower ejector plate, a rear mould core, a rear mould base and an ejection mechanism, and the ejection mechanism comprises an ejector pin and an ejector block; the female mould comprises a lower fixing plate, a front mould core, a front mould base and a guide post; the reverse mould also comprises a roller chain, roller chain mesons and a chain, the roller chain mesons are symmetrically arranged on the side edges of the ejector plate and the front mould base, the chain is arranged on the roller chain mesons, a base plate is also arranged between the lower ejector plate and the rear mould base, and the base plate is provided with the roller chain; when the mould is opened, the chain drives the female mould to depart from the male mould, and the roller chain drives the lower ejector plate to move downwards, so that the ejector pin and the ejector block are driven to move to the moulding cavity. The reverse mould can realize rapid demoulding and accurate return and avoid damage to the front mould core and the ejection mechanism.

Description

Inverted mold

Technical field

The utility model relates to a kind of injection mold structure, relates in particular to the accurately upside-down mounting mould of return of a kind of energy fast demoulding energy.

Background technology

Along with improving constantly of economic development and technical level, the structure of product is more and more diversified, and, along with the variation of product structure, makes mould structure become increasingly complex various.

Existing a kind of mould, for injection mo(u)lding one plastic product, this mould comprise master mold, with male model and the push rod of master mold corresponding matching, be provided with ejecting mechanism and return mechanism for ejecting product on male model.Existing ejecting mechanism generally comprises top board, thimble etc., return mechanism generally comprise the aftertaste pin and be installed in top board and male model between and be sheathed on the spring on the return pin.After ejecting product, during the ejecting mechanism return, utilize the elastic force of spring to make ejecting mechanism obtain return.Because the product structure of moulding is comparatively complicated, the ejecting mechanism of existing mold also comprises that one ejects die and top board.Eject the thimble top that die is installed in male model, by thimble, it is ejected.

But, usually can not quick and complete return after above-mentioned mold releasability, and cause ejecting mechanism by crushing, therefore, need design a kind of can be when matched moulds the accurate mould of return.

Summary of the invention

The purpose of this utility model is the deficiency existed for prior art, and the quick and precisely inverted mold of homing is provided after a kind of demoulding.

The utility model adopts following technical scheme to achieve these goals: i.e. a kind of inverted mold, comprise that master mold reaches and the male model of the mutual corresponding matching of master mold, there is forming cavity between male model and master mold, described male model comprises upper mounted plate, upper ejector plate, lower liftout plate, rear cavity, rear die holder and ejecting mechanism, ejecting mechanism comprises thimble and jacking block, thimble one end is fixed on lower liftout plate, the other end is successively through rear die holder and rear cavity and towards forming cavity, the rear cavity that lower end has activity space is fixed on rear die holder, described jacking block one end is connected with the penetrator ram on being fixed on upper ejector plate, the other end is movable up and down to be stretched out in activity space, described master mold comprises bottom plate, front cavity, front die holder and lead, front cavity be fixed on front die holder and as a whole installation above bottom plate, an end of lead is fixed on bottom plate, the other end is through front die holder and after inserting in die holder,

Above-mentioned inverted mold also comprises roller chain, roller chain meson and chain, described roller chain meson is symmetricly set on upper ejector plate and front die holder side, chain is arranged on the roller chain meson, also be provided with backing plate between described lower liftout plate and rear die holder, be equiped with roller chain on this backing plate, wherein, during die sinking, the chain-driving master mold separates with male model, and roller chain drives lower liftout plate and moves downward, thereby drive thimble and jacking block move to forming cavity.

The utility model is by the setting of roller chain and chain, and when chain tightens, the lower liftout plate of roller chain drive moves downward, and makes the product after thimble and jacking block push against moulding; During matched moulds, when chain during in loose state roller chain drive lower liftout plate and move upward, make the ejecting mechanism returning quickly, thereby avoid damaging front cavity and ejecting mechanism.

The accompanying drawing explanation

The non-limiting embodiment that device of the present utility model can provide by accompanying drawing further illustrates.

Fig. 1 is the utility model matched moulds view;

Fig. 2 is the schematic diagram after mould shown in Fig. 1 partly ejects product;

Fig. 3 makes the schematic diagram after mould shown in Fig. 1 ejects product fully;

In figure: 1-male model, 2-master mold, 3-product, 4-backing plate, the 8-chain, 9-roller chain meson, 11-upper mounted plate, the 12-rear cavity, 13-jacking block, 14-thimble, liftout plate under 15-, 16-upper ejector plate, 17-roller chain, die holder before 18-, 19-penetrator ram, 21-front cavity, the 22-bottom plate, 23-lead, die holder before 24-.

The specific embodiment

Below in conjunction with accompanying drawing, be described further.

Referring to accompanying drawing, the utility model inverted mold, comprise that master mold 2 reaches and the male model 1 of the mutual corresponding matching of master mold, there is forming cavity between male model 1 and master mold 2, described male model 1 comprises upper mounted plate 11, upper ejector plate 16, lower liftout plate 15, rear cavity 12, rear die holder 18 and ejecting mechanism, ejecting mechanism comprises thimble 14 and jacking block 13, thimble 14 1 ends are fixed on lower liftout plate 15, the other end is successively through rear die holder 18 and rear cavity 12 and towards forming cavity, the rear cavity 12 that lower end has activity space is fixed on rear die holder 18, described jacking block 13 1 ends are connected with the penetrator ram 19 on being fixed on lower liftout plate, the other end is movable up and down to be stretched out in activity space, described master mold 2 comprises bottom plate 22, front cavity 21, front die holder 24 and lead 23, front cavity 21 be fixed on front die holder 24 and as a whole installation above bottom plate 22, one end of lead 23 is fixed on bottom plate 22, and the other end is through in front die holder 24 the rear die holder 18 of insertion, described inverted mold also comprises roller chain 17, roller chain meson 9 and chain 8, described roller chain meson 9 is symmetricly set on upper ejector plate 16 and front die holder 24 sides, chain 8 is arranged on roller chain meson 9, also be provided with backing plate 4 between described lower liftout plate 15 and rear die holder 18, be equiped with roller chain 17 on this backing plate 4, wherein, during die sinking, chain 8 drives master mold 2 to be separated with male model 1, roller chain 17 drives lower liftout plate 15 and moves downward, thereby drive thimble 14 and jacking block 13 move to forming cavity.

As shown in Figure 1, the utility model is when die sinking not, and the lower surface of thimble 14 and jacking block 13 is concordant with the lower surface of rear cavity 12, and chain 8 is in the most loose state; Along with chain 8 is opened, drive roller chain 17 and rotate, roller chain 17 drives lower liftout plate 15 and moves downward, and the thimble 14 and the jacking block 13 that are connected with lower liftout plate 15 is moved to forming cavity, thereby eject product 3; When ejecting mechanism moves downward, chain 8 continue to be opened until chain 8 in tensioned state, now, product 3 is pushed away rear cavity 12 fully, as shown in Figure 3.During matched moulds, chain 8 in tensioned state starts to become flexible, driving roller chain 17 rotates backward, thereby driving lower liftout plate 15 moves upward, the thimble 14 be connected with lower liftout plate 15 is moved up with jacking block 13 until the lower surface of thimble 14 and jacking block 13 is concordant with the lower surface of rear cavity 12, and meanwhile, chain 8 continues to pull master mold 2 to move upward, when after subject-oriented post 23 inserts fully, die holder 18 is interior, matched moulds completes.The shift length of the ejecting mechanism driven due to roller chain 17 is far smaller than the shift length of the master mold 2 that chain drives, and therefore, ejecting mechanism can be prior to master mold 2 returns, thereby can not cause damage to front cavity and ejecting mechanism.

Claims

1. an inverted mold, comprise that master mold (2) reaches and the male model (1) of the mutual corresponding matching of master mold, there is forming cavity between male model (1) and master mold (2), described male model (1) comprises upper mounted plate (11), upper ejector plate (16), lower liftout plate (15), rear cavity (12), rear die holder (18) and ejecting mechanism, ejecting mechanism comprises thimble (14) and jacking block (13), thimble (14) one ends are fixed on lower liftout plate (15), the other end is successively through rear die holder (18) and rear cavity (12) and towards forming cavity, the rear cavity (12) that lower end has activity space is fixed on rear die holder (18), described jacking block (13) one ends are connected with the penetrator ram (19) on being fixed on lower liftout plate, the other end is movable up and down to be stretched out in activity space, described master mold (2) comprises bottom plate (22), front cavity (21), front die holder (24) and lead (23), front cavity (21) be fixed on front die holder (24) upper and as a whole installation in bottom plate (22) top, it is upper that one end of lead (23) is fixed on bottom plate (22), and the other end is through in front die holder (24) the rear die holder (18) of insertion,

It is characterized in that: also comprise roller chain (17), roller chain meson (9) and chain (8), described roller chain meson (9) is symmetricly set on upper ejector plate (16) and front die holder (24) side, chain (8) is arranged on roller chain meson (9), also be provided with backing plate (4) between described lower liftout plate (15) and rear die holder (18), be equiped with roller chain (17) on this backing plate (4), wherein, during die sinking, chain-driving master mold (2) separates with male model (1), roller chain (17) drives lower liftout plate (15) and moves downward, thereby driving thimble (14) and jacking block (13) moves to forming cavity.