CN102019397A

CN102019397A - Draw hook-type two-stage ejection die mechanism

Info

Publication number: CN102019397A
Application number: CN2009101763131A
Authority: CN
Inventors: 牟维军
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-14
Filing date: 2009-09-14
Publication date: 2011-04-20

Abstract

A draw hook-type two-stage ejection die mechanism comprises a support plate, screws, an extension spring, a draw hook, cylindrical pins, wedges, a sprue bush, a guide pillar, a guide sleeve, a core, a push rod, a reset rod, a cushion block, a backing plate, a moving template, stop nails, stop pins, a one-stage spread plate, a fixed plate, a two-stage push plate, a support plate, push blocks, an ejector sleeve, a fixed template, a female die, etc. (the connection mode is shown in specification figures). The mechanism utilizes the draw hook to perform the die opening for a certain distance and then to grab a push plate, realizing the first pushing. The second pushing is completed by a partial movable die ejecting mechanism. Meanwhile, when the first pushing is performed, the deformation and the damage of products are effectively prevented by employing the mechanism. The ejection force can be dispersed by the mechanism, and the products can be demoulded successfully. The mechanism is characterized in that the pressure force transmission is fine, the motion is very safe, and maintenance and regulation is very convenient.

Description

A kind of drag hook type secondary is released mold mechanism

Technical field

The present invention relates to metal crimp mold and injection molding, is a kind of mold mechanism that adopts the drag hook type secondary to release goods.

Background technology

Goods had a process of deviating from from the forming part of mould before taking off on the mould, make plastic be called ejecting mechanism from the mechanism that forming part is deviate from.Mostly adopt once action to finish in the release of mould manufacturing circle goods at present, but some goods adopt once release, is easy to generate distortion even destruction.Therefore, must adopt secondary to release,, make the goods demoulding smoothly to disperse knockout press to this based article.This mechanism that finishes a goods demoulding by two release actions is called the secondary ejecting mechanism.Make the boundary at mould, the secondary ejecting mechanism that adopts has at present: A, single push pedal secondary ejecting mechanism, and it is meant and only is provided with one group of push pedal and ejector pin retaining plate in this ejecting mechanism, and another time release is to lean on the motion of some peculiar parts to realize.B, two push pedal secondary ejecting mechanism, it is to utilize two push pedals, drives one group respectively and releases the mechanism that part realizes that secondary is released.Now be combined in mould in person and design line working experience for many years, the mold mechanism that provides following a kind of secondary to release.

Summary of the invention

The present invention provides the mold mechanism that a kind of drag hook type secondary is released.It is to utilize drag hook to hold the push piece plate behind the die sinking certain distance, realizes releasing for the first time, releases for the second time and is realized by dynamic model part ejecting mechanism, after the die sinking, be fixed on the drag hook of cover half one side, catch on the push piece plate, make the push piece plate not with the dynamic model motion, finish for the first time and release.When dynamic model continued motion, pin moved upward along the projection inclined-plane, and drag hook is upwards rotated around bearing pin, and drag hook and push piece plate are thrown off simultaneously.Release for the first time and finish, dynamic model continues to retreat again, and ejecting mechanism is realized releasing for the second time.This mechanism action is solid and reliable, the pressure transmission is very good, regulates easy for installationly, has overcome the problem of poor product quality in once releasing, and has greatly improved production efficiency, has saved production cost.

Description of drawings

Shown in the figure, Fig. 1 is a mould matched moulds situation.Fig. 2 holds the push piece plate for drag hook behind the die sinking certain distance, realizes the situation that ejects for the first time.

The present invention is further described below in conjunction with accompanying drawing

1-garden pin 2-solid plate 3-release link 4-die 5-pushing block

6-fixed head 7-fixed head 8-ejector sleeve 9-backing plate 10-push rod

11-support plate 12-straight pin 13-secondary push pedal 14-fixed head

15-one-level push pedal 16-retaining nail 17-screw 18-moving platen 19-screw

20-backing plate 21-cushion block 22-release link 23-push rod 24-screw

25-screw 26-core 27-guide pin bushing 28-screw 29-straight pin

30-guide pillar 31-sprue bush 32-voussoir 33-straight pin 34-drag hook

35-pin 36-extension spring 37-screw 38-support plate 39-backing pin

The specific embodiment:

Release mold mechanism for the drag hook type secondary shown in the figure, its operation principle: fuse by two pairs of drag hooks 34 between the one-level push pedal 15 of mould ejecting mechanism and the secondary push pedal 13, two-stage push pedal synchronization action when beginning to release, the push rod 10 of one-level push pedal promotes fixed head 6 and large-area pushing block 5, goods and die 4 are separated and take off pine with core 26, finish one-level and release.Rotate after drag hook 34 is run into voussoir 32 and make I and II push pedal unhook, one-level push pedal stop motion, and the secondary push pedal moves on, push rod 23 drives ejector sleeves 8 goods is released mould fully.Release link 3 is arranged on the secondary ejecting mechanism, when it resets, the one-level push pedal is resetted together.Above-mentioned action comes and goes repeating motion, carries out the large batch of production of product.

Claims

1. the mold mechanism released of a drag hook type secondary.Its main feature is: the article periphery that has has a lot of grooves, is difficult for releasing with once releasing, even pushes away brokenly goods.Therefore the mode that adopts secondary to release to disperse the demoulding package power of goods, successfully deviates from outside the mould goods.Fuse by two pairs of drag hooks between the one-level push pedal of mould ejecting mechanism and the secondary push pedal, two-stage push pedal synchronization action is finished one-level and is ejected when ejecting at first.After drag hook is run into voussoir, rotate and the I and II push pedal is broken off relations, the one-level push pedal stops action, the secondary push pedal continues up, and push rod drives ejector sleeve with outside the complete launch mode of goods, finishes secondary and ejects action, adopt this mechanism, product is very graceful, move solid and reliable, safety and environmental protection, save production cost largely, improved economic benefit.This mold mechanism has promotes the economic worth that makes.