CN213440955U

CN213440955U - Back mould contracts and cares demoulding structure

Info

Publication number: CN213440955U
Application number: CN202021730768.1U
Authority: CN
Inventors: 杜滨
Original assignee: Dongguan Goldwin Precision Mould Co ltd
Current assignee: Dongguan Goldwin Precision Mould Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-06-15
Anticipated expiration: 2030-08-19

Abstract

The utility model discloses a demolding structure is breathed out in back mould shrinkage, including A board and B board, and be provided with a plurality of die cavity between A board and the B board, the die cavity upper end is connected with the runner that is vertical layout, the thimble that is vertical layout is installed to the lower extreme, and the thimble upper end cover is equipped with the mold insert of breathing out, and contracts and breathe out mold insert upper end and set up in the die cavity, contracts and breathe out the mold insert and install in the back mould push pedal upper end of terminal surface under the B board, and the thimble is installed in the thimble board upper end of terminal surface under the back mould push pedal. When the mold is opened, the rear mold push plate drives the retracting mold insert to retract downwards to withdraw the core, and the ejector pin is pushed up to release the mold, so that the deep thin glue position can be withdrawn firstly, and too large force cannot be caused during ejection, thereby avoiding damaging the product and greatly reducing the production cost; the event the utility model has the advantages of novel in design, simple structure, earlier the breathing out is loosed core and then ejecting drawing of patterns again, guarantees that the product is not damaged during the drawing of patterns, greatly reduced manufacturing cost.

Description

Back mould contracts and cares demoulding structure

Technical Field

The utility model relates to an injection mold technical field especially relates to a back mould contracts and cares demoulding structure.

Background

In the injection mold, in the plastic injection molding process, a product can be deeply thinned, if the product is directly ejected by an ejector pin, the product can be ejected when the contact area of the ejector pin is too small to cause the blank ejection, so that the product is scrapped or bad, and the production cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough and provide a back mould contracts and cares out demoulding structure, and this back mould contracts and cares out demoulding structure novel in design, simple structure, contracts earlier and cares out and loose core then ejecting drawing of patterns again, guarantees during the drawing of patterns that the product is not damaged, greatly reduced manufacturing cost.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

The utility model provides a demolding structure is breathed out in back mould shrinkage, including A board and B board, and be provided with a plurality of die cavity between A board and the B board, the die cavity upper end is connected with the runner that is vertical layout, the thimble that is vertical layout is installed to the lower extreme, the thimble upper end cover is equipped with the mold insert of breathing out, and the mold insert upper end of breathing out sets up in the die cavity, the mold insert of breathing out is installed in the back mould push pedal upper end of B board lower terminal surface, the thimble is installed in the thimble board upper end of back mould push pedal lower terminal surface.

Wherein, the upper end surface of the A plate is provided with a front mould push plate, and the upper end of the front mould push plate is provided with a runner plate.

Wherein, the upper end of the runner plate is provided with a panel, and the upper end of the panel is provided with a squirt nozzle connected with the runner plate.

Wherein, the bottom plate is installed to thimble board lower extreme, and the bottom plate with install the square iron between the B board.

The utility model has the advantages that: a demolding structure is breathed out in back mould shrinkage, including A board and B board, and be provided with a plurality of die cavity between A board and the B board, the die cavity upper end is connected with the runner that is vertical layout, the thimble that is vertical layout is installed to the lower extreme, thimble upper end cover is equipped with contracts and breathes out the mold insert, and contracts and breathe out mold insert upper end and set up in the die cavity, contracts and breathe out the mold insert and install in the back mould push pedal upper end of terminal surface under the B board, the thimble is installed in the thimble board upper end of terminal surface under the back mould push pedal. The utility model discloses a shrink and breathe out the mold insert at thimble upper end cover, and shrink and breathe out mold insert upper end and set up in the mould intracavity, shrink and breathe out the mold insert and install in the back mould push pedal upper end of B board lower terminal surface, when the die sinking, the back mould push pedal drives earlier to shrink and breathe out the mold insert and loose core downwards, and the thimble just goes up the top drawing of patterns, can take out the dark thin glue position earlier like this, just can not cause too big power when ejecting, thereby avoid damaging the product, greatly reduced manufacturing cost; the event the utility model has the advantages of novel in design, simple structure, earlier the breathing out is loosed core and then ejecting drawing of patterns again, guarantees that the product is not damaged during the drawing of patterns, greatly reduced manufacturing cost.

Drawings

The invention will be further described with reference to the drawings, but the embodiments in the drawings do not constitute any limitation of the invention.

Fig. 1 is a schematic structural diagram of the present invention.

In fig. 1, included are:

1-A board 11-front mould push board

12-flow channel plate 13-face plate

14-sprue bush 2-B plate

21-rear mould push plate 22-ejector plate

23-bottom plate 24-square iron

3-die cavity 31-runner

32-thimble 33-shrink insert.

Detailed Description

The present invention will be described with reference to specific embodiments.

As shown in fig. 1, a rear mold retracting demolding structure comprises an a plate 1 and a B plate 2, wherein a plurality of mold cavities 3 are arranged between the a plate 1 and the B plate 2, the upper ends of the mold cavities 3 are connected with runners 31 which are vertically arranged, ejector pins 32 which are vertically arranged are installed at the lower ends of the mold cavities 3, a retracting insert 33 is sleeved at the upper end of each ejector pin 32, the upper end of each retracting insert 33 is arranged in the mold cavity 3, the retracting insert 33 is installed at the upper end of a rear mold push plate 21 on the lower end face of the B plate 2, and the ejector pins 32 are installed at the upper end of an ejector plate 22 on the lower end face of the rear mold push plate 21.

Furthermore, the upper end surface of the A plate 1 is provided with a front mould push plate 11, and the upper end of the front mould push plate 11 is provided with a runner plate 12.

Furthermore, a panel 13 is installed on the upper end of the runner plate 12, and a squirt nozzle 14 connected with the runner plate 12 is installed on the upper end of the panel 13.

Further, a bottom plate 23 is arranged at the lower end of the ejector plate 22, and a square iron 24 is arranged between the bottom plate 23 and the B plate 2.

The utility model needs to explain further, the upper end of the thimble 32 is sleeved with the retraction insert 33, the upper end of the retraction insert 33 is arranged in the die cavity 3, the retraction insert 33 is arranged at the upper end of the rear die push plate 21 at the lower end surface of the B plate 2, when the die is opened, the rear die push plate 21 firstly drives the retraction insert 33 to retract downwards to withdraw the core, and the thimble 32 is pushed up to demould, so that the deep thin glue position can be firstly pulled out, and the large force can not be caused during the ejection, thereby avoiding damaging the product and greatly reducing the production cost; the event the utility model has the advantages of novel in design, simple structure, earlier the breathing out is loosed core and then ejecting drawing of patterns again, guarantees that the product is not damaged during the drawing of patterns, greatly reduced manufacturing cost.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a demolding structure is breathed out in back mould shrinkage, its characterized in that: including A board (1) and B board (2), and be provided with a plurality of die cavity (3) between A board (1) and B board (2), die cavity (3) upper end is connected with runner (31) that is vertical layout, thimble (32) that are vertical layout are installed to the lower extreme, thimble (32) upper end portion cover is equipped with the breathing out mold insert (33), and breathing out mold insert (33) upper end sets up in die cavity (3), breathing out mold insert (33) are installed in back mould push pedal (21) upper end of B board (2) lower terminal surface, thimble (32) are installed in thimble board (22) upper end of back mould push pedal (21) lower terminal surface.

2. The back mold shrinkage and release structure according to claim 1, wherein: the upper end surface of the A plate (1) is provided with a front mould push plate (11), and the upper end of the front mould push plate (11) is provided with a runner plate (12).

3. The back mold shrinkage and release structure according to claim 2, wherein: the upper end of the runner plate (12) is provided with a panel (13), and the upper end of the panel (13) is provided with a squirt nozzle (14) connected with the runner plate (12).

4. The back mold shrinkage and release structure according to claim 1, wherein: the lower end of the ejector plate (22) is provided with a bottom plate (23), and a square iron (24) is arranged between the bottom plate (23) and the B plate (2).