CN105643877A

CN105643877A - Mould and product ejector method

Info

Publication number: CN105643877A
Application number: CN201510212697.3A
Authority: CN
Inventors: 林志平; 李鹏飞; 刘宜锋; 肖自强; 舒斯聪
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2015-04-29
Filing date: 2015-04-29
Publication date: 2016-06-08

Abstract

The invention provides a mould and a product ejector method, wherein the mould comprises an upper mould, a lower mould and a slide which is arranged between the upper mould and the lower mould, wherein the upper mould, the lower mould and the slide form a mould cavity; an ejector pin base is arranged on the lower part of the lower mould; an ejector pin is arranged on the ejector pin base, and is used for ejecting out solid substances in a water hole; the water hole which communicates with the mould cavity is formed in the slide; a first slide slot which extends in a sliding direction of the slide is formed in the ejector pin base; the ejector pin is in sliding fit to the first slide slot; and a second slide slot which is parallel to the first slide slot, and is in sliding fit to the ejector pin, is formed in the lower mould. According to the mould, the position of the water hole and the position of the slide can be matched with each other, so that mutual influence degree of the water hole and the slide is reduced, and therefore, the injection-molding efficiency of the mould is further improved.

Description

A kind of mould and product extrusion method

Technical field

The present invention relates to mold injection technical field, particularly relate to a kind of mould and product extrusion method.

Background technology

Along with the fast development of production, mold injection gradually as ripe forming technique, is widely used in the industries such as electronic product, automobile, household electrical appliances.

Introduce the term in mold injection industry below:

The implication of die cavity: after upper mould and counterdie close mould, the gap of intermediate formation shape of product is die cavity.

The implication at the mouth of a river: the plastic flow of thermalization liquid state enters the import and export of die cavity.

The implication of throwing mechanism: in a circulation of injection moulding, the mechanism completing to take out plastic action is throwing mechanism.

The implication of line position: when there is a back-off in product structure and mould die sinking direction, the surrounding at product structure arranges supplementary structure, after supplementary structure backs out product, is taken out smoothly by product from mould core. Supplementary structure is line position.

Summary of the invention

The present inventor finds in research process:

Mold use process is roughly: the mouth of a river is positioned over the position being connected with die cavity, the upper die and lower die of mould are closed mould, then by the mouth of a river to type intracavitary administration melt plastic cement, until melt plastic cement fills up the mouth of a river, now think that melt plastic cement has filled up die cavity. After melt plastic cement cools, completing an injection moulding process, the object in die cavity is just desired product, and the demoulding can obtain product.

But, owing to some products have back-off structure, this series products easily damages back-off structure when the demoulding. In order to protect the integrity of product, this series products, when building mould, has at product and arranges line position (outside die cavity) on the position of back-off structure. After product injection moulding, it is possible to first move the line position of die cavity surrounding, line position is made to depart from product; And then by product stripping, to protect the back-off structure of product.

Generally speaking, in order to protect quality product, the mouth of a river is generally positioned at the fixed position outside die cavity. But, for the mould with line position, when line position occupies the position outside mould upper impression, just rational position cannot be set for the mouth of a river.

So, for the mould having line position, needing the position considering the mouth of a river and line position when designing mould, both can not influence each other each other.That is: the mouth of a river can not affect the movement of line position, and line position can not affect the mouth of a river to injection moulding melt plastic cement in die cavity.

Given this, it is an object of the invention to provide a kind of mould, the position of the position at the mouth of a river and line position can be cooperatively interacted, thus reduce both degree that influences each other, to improve mold injection efficiency further.

In order to realize above-mentioned purpose, the present invention provides following technique means:

A kind of mould, the line position comprising upper die and lower die and be arranged between described upper die and lower die, described patrix, described counterdie and described line position form die cavity, are arranged at the thimble seat of described counterdie bottom and are arranged on described thimble seat, for ejecting the thimble of solids in the mouth of a river;

The mouth of a river being connected with described die cavity is opened in described line position;

Offering the first chute that the slip direction along described line position extends on described thimble seat, described thimble and described first chute are slidably matched;

Described counterdie is offered parallel with described first chute, and the 2nd chute being slidably matched with described thimble.

Preferably, described thimble seat can move back and forth along the length direction of described thimble.

Preferably, when the surrounding at described die cavity has two or more line position and a mouth of a river, the described mouth of a river can be arranged in arbitrary line position, or, the described mouth of a river is arranged in all line positions.

Preferably, surrounding at described die cavity has four line positions.

Preferably, described line position along the outside surface of described counterdie, can move to the direction deviating from described die cavity.

A kind of product extrusion method, is applied to described mould, and described method comprises:

Open upper mould;

Control line position drives the mouth of a river and thimble, and along the outside surface of counterdie, the direction in release chamber of supporting or opposing is moved;

Control thimble seat, along the length direction of thimble, moves to line position side, so that thimble seat drives thimble to eject the solids in the mouth of a river.

Compared with prior art, the present invention has following useful effect:

In the embodiment of the present invention, the mouth of a river is opened in line position, and, thimble seat is offered the first chute, counterdie has been offered the 2nd chute, the first chute and the 2nd parallel setting of chute. This makes line position when moving horizontally, it is possible to driving thimble and the mouth of a river in the first chute, the direction along the 2nd chute moves horizontally; Owing to the mouth of a river can be moved along with line position, so reaching the object that the mouth of a river does not affect the movement of line position. Further, the mouth of a river and thimble are penetratingly arranged at line position, as long as the mouth of a river is connected with die cavity, just can by the mouth of a river to type intracavitary administration melt plastic cement, and thus the position reaching line position does not affect the object by mouth of a river injection moulding.

So the position of the position at the mouth of a river and line position can be cooperatively interacted by the present invention, thus reduce both degree that influences each other, to improve mold injection efficiency further.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of a kind of mould disclosed in the embodiment of the present invention;

Fig. 2 is the structural representation locating movement on a kind of mould disclosed in the embodiment of the present invention;

Fig. 3 is the structural representation that on a kind of mould disclosed in the embodiment of the present invention, thimble moves;

Fig. 4 is the schema of a kind of product extrusion method disclosed in the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.

Refer to Fig. 1-Fig. 3, the present invention provides a kind of mould, the line position 12 comprising patrix (not shown), counterdie 11 and be arranged between described upper die and lower die 11, described patrix, described counterdie 11 form die cavity 13 (identical with product 13 position) with described line position, it is arranged at the thimble seat 14 of described counterdie 11 bottom and it is arranged on described thimble seat 14, for ejecting the thimble 16 of solids 19 in the mouth of a river 15.

In addition, the mouth of a river 15 being connected with described die cavity 13 in described mould is opened in described line position 12; Offering the first chute 17 that the slip direction along described line position extends on described thimble seat 14, described thimble 16 is slidably matched with described first chute 17; Described counterdie 11 is offered parallel with described first chute 17, and the 2nd chute 18 being slidably matched with described thimble 16.

Wherein, thimble 16, thimble seat 14, first chute 17 and the 2nd chute 18 form one group of mouth of a river throwing mechanism, are only described for one group of mouth of a river throwing mechanism in Fig. 1 of the present invention. It should be appreciated that when the mouth of a river has multiple, the present invention can have with the mouth of a river one to one with the use of many groups mouth of a river throwing mechanism.

Being opened in line position 12 by the mouth of a river 15 in the present invention, this makes in injection melt plastic cement and knockout course, and the mouth of a river 15 and line position 12 can cooperatively interact, to reach the mouth of a river 15 and object that line position 12 is independent of each other.

Introduce the detailed use procedure that this mould carries out injecting melt plastic cement below:

Refer to Fig. 1, thimble 16 and the mouth of a river 15 are moved horizontally to the direction near die cavity 13 by the first chute 17 and the 2nd chute 18, to make thimble 16 and the mouth of a river 15 close to die cavity 13, and is connected with die cavity 13. Then, control thimble seat 14, along the length direction of thimble 16, moves to the direction away from line position 12, so that thimble seat 14 drives thimble 16 to move down, until the top of thimble 16 is flooded at the mouth of a river 15, so that the solids 19 ejected in the mouth of a river 15 for thimble 16 is prepared.

Then, the upper die and lower die 11 of mould are closed mould, and in die cavity 13, injects melt plastic cement by the mouth of a river 15. After melt plastic cement cools, completing an injection moulding process, the object in die cavity is desired product, and the demoulding can obtain product.

But, the melt plastic cement in die cavity is injected by the mouth of a river 15, and this causes die cavity 13 after filling melt plastic cement, in the junction and the mouth of a river 15 at die cavity 13 and the mouth of a river 15, also can remain melt plastic cement, and also can become solids 19 after the cooling period. That is: solids 19 is remained in the mouth of a river 15, and, in the mouth of a river 15, the product in solids 19 and die cavity 13 is connected by melt plastic cement.

So, after single injection-molded, the plastic cement between the solids 19 disconnected in the mouth of a river 15 and the product in die cavity 13 is needed to connect, and, also need to eject the solids 19 in the mouth of a river 15 and product (ejecting of solids 19 and product, it is called for short the demoulding), to inject melt plastic cement by the mouth of a river 15 in die cavity 13 next time.

Introduce the detailed use procedure of this mold releasability below:

First patrix is removed when the demoulding, and then the direction in release chamber 13 of line position 12 being supported or opposed is moved, so that line position 12 is away from product. Owing to thimble 16 is through in line position 12, so line position 12 is deviating from the process that die cavity 13 moves horizontally, the support or oppose direction in release chamber 13 of thimble 16 and the mouth of a river 15 can be driven to move horizontally, so that the mouth of a river 15 departs from product, and disconnect the solids 19 in the mouth of a river 15 and the plastic cement between product is connected.

Owing to counterdie 11 is provided with the 2nd chute 18, and thimble seat 14 is provided with the first chute 17, so thimble 16 can smooth and easyly along with line position 12 moves, so that the mouth of a river 15 departs from product, and the position reaching the mouth of a river 15 does not affect the object that line position 12 moves. Referring to Fig. 2 is the mould structure after line position moves.

Then, control thimble seat 14, along thimble 16 length direction, moves to line position 12 side, so that thimble seat 14 drives thimble 16 to be ejected by solids 19 in the mouth of a river 15. Referring to Fig. 3 is the schematic diagram that thimble ejects solids 19 in the mouth of a river 15. On this basis, it is possible to by the throwing mechanism ejecting product below product.

By above content it will be seen that the present invention has following useful effect:

The mouth of a river 15 is opened in line position 12 by the embodiment of the present invention, and, thimble seat is offered the first chute 17, counterdie has been offered the 2nd chute 18. This makes line position 12 when moving horizontally, it is possible to drive thimble 16 and the mouth of a river 15 can in the first chutes 17, and the direction along the 2nd chute 18 moves horizontally; Owing to the mouth of a river 15 can be moved along with line position 12, so reaching the object that the mouth of a river 15 does not affect the movement of line position 12. Further, the mouth of a river 15 and thimble 16 are penetratingly arranged in line position 12, as long as the mouth of a river 15 is connected with die cavity 13, just can inject melt plastic cement by the mouth of a river 15 to die cavity 13, thus reach line position 12 and do not affect the object through the mouth of a river 12 injection moulding.

In addition, the thimble 16 and thimble seat 14 that are used for ejecting the mouth of a river 15 are also run through by the present invention and is arranged at line position 12, so that after an injection moulding completes, it is possible to by the cooperation of thimble 16 and thimble seat 14, solids 19 in the mouth of a river 15 is ejected, to perform injection moulding process next time.

So the position of the position at the mouth of a river 15 and line position 12 can be cooperatively interacted by the present invention, thus reduce both degree that influences each other, to improve mold injection efficiency further.

In the preferred case, the surrounding of die cavity 13 can have the line position 12 of two or more, and now the mouth of a river 15 and mouth of a river throwing mechanism can be arranged in arbitrary line position 12, or the mouth of a river 15 and mouth of a river throwing mechanism are arranged in all line positions 12.

In preferred situation, product surrounding all has line position 12, and mould can have the two or more mouth of a river 15. Each line position 12 of product surrounding, all can move to the direction away from product in the horizontal direction. In the case, mould need to have and each mouth of a river 15 mouth of a river throwing mechanism one to one, a mouth of a river 15 and one group of mouth of a river throwing mechanism with the use of. Multiple mouth of a river 15 and many group mouths of a river throwing mechanism, it is possible to be arranged in arbitrary line position 12 of product surrounding, it is also possible to be on average arranged in four line positions 12 of product surrounding.

Introducing the pushing method of the solids 19 in the mouth of a river 15 and product below, solids 19 and ejecting of product in the mouth of a river 15 can have following three kinds of implementations:

The first: the solids 19 in product and the mouth of a river 15 ejects simultaneously.

2nd kind: first product is ejected, then the solids 19 in the mouth of a river 15 is ejected.

The third: first the solids 19 in the mouth of a river 15 is ejected, then product is ejected.

No matter adopting the object of solids 19 demoulding that any mode all can realize in product and the mouth of a river 15, wherein, the disposable mode ejected by solids 19 in product and the mouth of a river 15, can save time compared to other two kinds of modes, raise the efficiency.

The present invention, on the mold foundation shown in Fig. 1, also proposed a kind of product extrusion method, and as shown in Figure 4, described method comprises:

Step S101: open upper mould;

Step S102: control line position 12 drives the mouth of a river 15 and thimble 16, and along the outside surface of counterdie 11, the direction in release chamber 13 of supporting or opposing is moved;

Step S103: control thimble seat 14, along the length direction of thimble 16, moves to line position 12 side, so that thimble seat 14 drives the solids 19 that thimble 16 ejects in the mouth of a river 15. And by the product throwing mechanism ejecting product below product.

Under the product extrusion method that the embodiment of the present invention provides, it is possible to ensure the smooth demoulding of product, and the demoulding efficiency of product can be improved.

In this specification sheets, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment emphasis illustrated is the difference with other embodiment, between each embodiment same or similar part mutually see.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are enable to realize or use the present invention. To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, the present invention can not be limited in these embodiments shown in this article, but be met the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. a mould, it is characterized in that: the line position (12) comprising upper die and lower die (11) and being arranged between described upper die and lower die (11), described patrix, described counterdie (11) and described line position (12) form die cavity (13), it is arranged at the thimble seat (14) of described counterdie (11) bottom and it is arranged on described thimble seat (14), for ejecting the thimble (16) of the mouth of a river (15) interior solids;

The mouth of a river (15) being connected with described die cavity (13) is opened in described line position (12);

Offering the first chute (17) that the slip direction along described line position (12) extends on described thimble seat (14), described thimble (16) and described first chute (17) are slidably matched;

Described counterdie (11) is offered parallel with described first chute (17), and the 2nd chute (18) being slidably matched with described thimble (16).

2. mould as claimed in claim 1, it is characterised in that, described thimble seat (14) can move back and forth along the length direction of described thimble (16).

3. mould as claimed in claim 2, it is characterized in that, when surrounding at described die cavity (13) has two or more line position (12) and a mouth of a river, the described mouth of a river (15) can be arranged in arbitrary line position (12), or, the described mouth of a river (15) are arranged in all line positions (12).

4. mould as claimed in claim 3, it is characterised in that, the surrounding at described die cavity (13) has four line positions (12).

5. mould as described in claim 1-3, it is characterised in that, described line position (12) along the outside surface of described counterdie (11), can move to the direction deviating from described die cavity (13).

6. a product extrusion method, it is characterised in that, it is applied to mould as claimed in claim 1, described method comprises:

Open upper mould;

Control line position (12) drives the mouth of a river (15) and thimble (16), and the support or oppose direction in release chamber (13) of the outside surface along counterdie (11) is moved;

Control thimble seat (14), along the length direction of thimble (16), is moved to line position (12) side, so that thimble seat (14) drives thimble (16) to eject the solids in the mouth of a river (15).