CN202399474U

CN202399474U - Mold structure beneficial for sticking film in mold

Info

Publication number: CN202399474U
Application number: CN2011205409454U
Authority: CN
Inventors: 卫岗; 黄廷雄; 郑炎辉
Original assignee: Xiamen Jinway Mould Co Ltd
Current assignee: Xiamen Jinway Mould Co Ltd
Priority date: 2011-12-21
Filing date: 2011-12-21
Publication date: 2012-08-29
Anticipated expiration: 2021-12-21

Abstract

The utility model discloses a mold structure beneficial for sticking a film in a mold. The mold structure comprises a rear mold and a front mold, wherein the rear mold is provided with a rear mold core, the front mold core is provided with a front mold core, the front mold and the rear mold are overlaid from up to down, and the cavities of the rear mold and the front mold face upwards. The mold structure is characterized in that a core is provided with an ejector mechanism which can eject a product, the bottom of the cavity of the rear mold is provided with a fixing surface which can transversally fix the film, the front mold is provided with a pouring gate where the glue feeding faces towards the fixing surface, the front mold and the rear mold are overlaid from up to down, so that the film can be stabilized in the cavities at a larger extent by gravity, in addition, due to the direction design of the pouring gate, the condition that the film randomly displaces by the impact of the plastic injection to the film and is even failure can not be caused, and further, the efficiency and the consistency of the scale production of the film in the mold can be ensured.

Description

A kind of mould structure that is beneficial to pad pasting in the mould

Technical field

The utility model relates to a kind of structure that helps realizing the injection mold of pad pasting in the mould.

Background technology

Have one type of injecting products to deal with on its surface, being shaped to sign, the sign on the traditional product often utilizes bat printing, silk-screen, technology such as gold stamping to accomplish.These technologies can take a large amount of costs of labor, can cause that also thing followed productive rate is not high, the low not result of suitable automatic mass production that waits of yield.For improving the problem of large-scale production, the technology of one type of interior pad pasting of mould is arisen at the historic moment, and this type technology is processed film like with sign, and it is placed in the injection mold of moulding, makes injection moulding and mark know one-step shaping, has saved other technology cost.But this method also has its where the shoe pinches, and because of the thickness of film is very little, quality is also very little, under the high pressure of injection molding material, is easy in mould, be moved, and departs from its original fixed position of setting, to such an extent as to occurrence of waste; Because this is in the die cavity of mould sealing, to take place, can't intervene from the outside such as extra means such as fixing.

The utility model content

To the where the shoe pinches with film coating process in the patrix, the utility model proposes a kind of mould structure that is beneficial to pad pasting in the mould, and its technical scheme is following:

A kind of mould structure that is beneficial to pad pasting in the mould, it comprise one have the back die back mould and have before the front mould of die; Said front mould, back mould stack up and down, and said die cavity up; Has the ejector pin mechanism that product is ejected on the said core; But said back die cavity bottom has the stationary plane of a crosswise fixed pad pasting; On said front mould, has into glue towards the cast gate of said stationary plane.

As the preferred person of present technique scheme, can embody embodiment as follows:

In one preferred embodiment, has the oil cylinder of the ejector pin mechanism outputting power on said front mould on the mould of said back.

In one preferred embodiment, said front mould and the die joint of back mould and the two ends of said stationary plane office product.

In one preferred embodiment, said stationary plane is the guiding surface of the said pad pasting attitude of pressurized automatic straightening when having the injection moulding charging, said cast gate towards with said guiding surface towards relatively.

The beneficial effect that the utility model brings is:

1. so, therefore front mould stacks up and down with the back mould, thimble is positioned at the form of front mould, makes pad pasting can rely on gravity to be stable in the die cavity largely; Moreover, to such an extent as to the design of the direction of cast gate makes injection molding material can not make its arbitrarily displacement inefficacy to the impact of pad pasting, thereby guaranteed the efficient and the uniformity of pad pasting in the large-scale production mould;

2. guiding surface makes pad pasting under the impact of injection molding material, have the ability that self adaptation is fitted, and reduces crash rate;

3. die joint and stationary plane are positioned at the two ends of product; Also promptly satisfy the distance of die joint and stationary plane, sufficiently far away on identical product, because cast gate is near die joint; So stationary plane just can space out with cast gate; To weaken the impact of injection molding material that cast gate comes out to pad pasting, make it stable as far as possible, further improve yields.

Description of drawings

Embodiment is described further the utility model below in conjunction with accompanying drawing:

Fig. 1 is the generalized section one of the utility model one embodiment;

Fig. 2 is Fig. 1 embodiment generalized section two, and this section and section shown in Figure 1 are perpendicular;

Fig. 3 is the enlarged diagram of A part among Fig. 2.

The specific embodiment

Like Fig. 1, the generalized section one of the utility model one embodiment; Fig. 2 is Fig. 1 embodiment generalized section two, and this section and section shown in Figure 1 are perpendicular; Fig. 3 is the enlarged diagram of A part among Fig. 2.

Explain in conjunction with this three figure:

One front mould 40 and a back mould 30 vertically stack up and down, and front mould 40 central authorities are preceding dies 50, and back mould 30 central authorities are back dies 20, and the die cavity of back die 20 is placed up; On front mould 40, has ejector pin mechanism 10.Product 70 moulding between preceding die 50 and back die 20 is ejected downwards by ejector pin mechanism 10 on the die 50 more in the past.

But die cavity 80 bottoms of die 20 have the stationary plane 51 of a crosswise fixed pad pasting 70 in the back, and the shape of the shape of this stationary plane 51 and pad pasting 70 is similar basically, when pad pasting 70 pastes when being put in stationary plane 51 bottoms fully; Horizontal moving can arbitrarily not take place, and the right-hand member of stationary plane 51 is guiding surfaces 52, and this guiding surface 52 depends on the shape demand of product itself; But can suitably set its position to reach better effect; Because the cast gate 41 of die cavity 80 is positioned on the preceding die 50, and its opening shape is towards whole stationary plane 51; And with guiding surface 52 relative durection component is arranged; It is thus clear that its pressure of injection molding material that comes from cast gate 41 can cause pad pasting 70 to be pressed together on more steadily on stationary plane 51 and the guiding surface 52, through reasonably being provided with; The characteristic that guiding surface 52 itself also has is; When pad pasting 70 injection moulding eve out-of-flatness and being shifted to some extent in die cavity 80, then the injection molding material from cast gate 41 can provide enough pressure, makes pad pasting 70 be matched with stationary plane 51 and guiding surface 52 adaptively.

On the mould 30 of back, be fixed with oil cylinder 60, because front mould 40 is not possess dynamical system usually, yet in the present embodiment, ejector pin mechanism 10 is positioned at front mould, need provide power to make its work eject the product after the die sinking in the die cavity 80.

In addition, find out from Fig. 3 that front mould 40 is compared with stationary plane 51 with the die joint 31 of back mould 30; Both are positioned at the two ends of product, also promptly satisfy the distance of die joint 31 and stationary plane 51, and are sufficiently far away on identical product; Because cast gate 41 is near die joint 31; So stationary plane 41 just can space out with cast gate 41,, make it stable as far as possible to weaken the impact of injection molding material that cast gate 41 comes out to pad pasting 70.

So, therefore front mould 40 stacks up and down with back mould 30, makes pad pasting can rely on gravity to be stable at largely in the die cavity 80; Moreover, to such an extent as to the design of the direction of cast gate 41 makes injection molding material can not make its arbitrarily displacement inefficacy to the impact of pad pasting 70; Guiding surface 52 makes pad pasting 70 under the impact of injection molding material, have the ability that self adaptation is fitted.

The above; Be merely the utility model preferred embodiment; So can not limit the scope that the utility model is implemented according to this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.

Claims

1. mould structure that is beneficial to pad pasting in the mould, it comprise one have the back die back mould and have before the front mould of die; Said front mould, back mould stack up and down, and said die cavity up; It is characterized in that: have the ejector pin mechanism that product is ejected on the said core; But said back die cavity bottom has the stationary plane of a crosswise fixed pad pasting; On said front mould, has into glue towards the cast gate of said stationary plane.

2. according to the said a kind of mould structure that is beneficial to pad pasting in the mould of claim 1, it is characterized in that: the oil cylinder that has the ejector pin mechanism outputting power on said front mould on the mould of said back.

3. according to the said a kind of mould structure that is beneficial to pad pasting in the mould of claim 1, it is characterized in that: said front mould and the die joint of back mould and the two ends of said stationary plane office product.

4. according to the said a kind of mould structure that is beneficial to pad pasting in the mould of claim 1, it is characterized in that: said stationary plane is the guiding surface of the said pad pasting attitude of pressurized automatic straightening when having the injection moulding charging, said cast gate towards with said guiding surface towards relatively.