CN202271523U - Anti-crease mold for thin-film drawing - Google Patents
Anti-crease mold for thin-film drawing Download PDFInfo
- Publication number
- CN202271523U CN202271523U CN2011204090225U CN201120409022U CN202271523U CN 202271523 U CN202271523 U CN 202271523U CN 2011204090225 U CN2011204090225 U CN 2011204090225U CN 201120409022 U CN201120409022 U CN 201120409022U CN 202271523 U CN202271523 U CN 202271523U
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- China
- Prior art keywords
- wrinkle resistant
- film
- mold
- crease
- mould
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- Expired - Fee Related
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Abstract
The utility model relates to an anti-crease mold for thin-film drawing. The anti-crease mold comprises a movable mold and a fixed mold, wherein the fixed mold is provided with a mold cavity for forming of a thin film; the fixed mold is also provided with anti-crease convex blocks at the outer sides of the corners of the mold cavity; and the corresponding positions on the movable mold are provided with anti-crease concave grooves, the shapes of which correspond to those of the anti-crease convex blocks. When the thin film is drawn to be formed, the anti-crease grooves can contain the thin film which has no place to go after the surface area is enlarged, so that a product can not be creased.
Description
Technical field
The utility model relates to a kind of particular manufacturing craft that is used for film stretching, is specifically related to the wrinkle resistant mould of a kind of film stretching.
Background technology
Along with the raising that the mobile phone decoration functions is required; IML and IMD technology have obtained very big development; IML and IMD are used to limit discrepant slightly technology sometimes; But in fact, the both be included in an earlier preset ornamental feature before the moulding material injection moulding like film with mirror effect in mould, to obtain this ornamental feature decorative effect that label was had in other words.
In traditional Inset decoration injection molding process, processed film substrate before this, on this film substrate, process the decorative pattern layer then, cut this film and hot pressing preformed then, form film insert, at last film insert is put into the injection mould injection mo(u)lding.
When the sclerosis PET film hot compacting degree of depth surpasses 2mm; The defective proportion that fold occurs at the product rotation angle position is near 100%, and the generation of this problem is because there is multidirectional stretching in hardening film local location when drawing and forming, causes that film is local to extend (because be hardening film; The local sudden change of hardened layer restriction film); And the film size that increases causes unnecessary film to extend nowhere greater than the product area that needs moulding, is deposited in corner area and produces fold.
For solving the above problems, IML manufacturer has carried out a lot of trials.For example; The thin film heat pressing and molding mold that provides among the Chinese patent CN200710076029.8 (referring to Fig. 1), this mould is provided with a lot of fixed legs 4 around the die cavity 3 of confession film forming on the cover half 1; Film with to the die cavity corner carries out multidirectional stretching, prevents fold.We have carried out a large amount of experiments according to the method, particularly surpass the sclerosis PET film of 2mm to the moulding degree of depth, use this method after, the product fraction defective has only dropped to 90% from 100%, does not fundamentally solve the wrinkling problem of film stretching.
The utility model content
To the problems of the prior art, it is a kind of very effectively simple that the utility model provides, and the very low solution of cost, realizes through following its technical scheme:
The wrinkle resistant mould of a kind of film stretching; Comprise dynamic model and cover half; Cover half is provided with the die cavity that supplies film forming, also is provided with wrinkle resistant projection in the outside, said die cavity corner on the said cover half, and correspondence position is provided with the shape wrinkle resistant groove corresponding with wrinkle resistant projection on the said dynamic model.When the film stretching moulding, said wrinkle resistant groove can amass the film of having nowhere to go after the increase by receiving surface, makes product no longer wrinkling.
Further, said wrinkle resistant projection and wrinkle resistant groove are arc, and the radian of this arc can adjust accordingly according to die cavity corner shape.
Further, said wrinkle resistant projection and said wrinkle resistant groove be arc length greater than the district that creases easily on the corner.
Further again, the degree of depth of said wrinkle resistant groove is 1mm, and said wrinkle resistant groove is 4mm apart from die cavity the most nearby.
Further, the end face of said wrinkle resistant projection and the bottom surface of said wrinkle resistant groove are equipped with anti-skidding line, and the frictional force when this anti-skidding line can increase drawing and forming prevents that film from skidding.
The wrinkle resistant mould of the utility model film stretching can well solve the wrinkling problem of film when hot-forming, and the product yield is high.
Description of drawings
Fig. 1 is the wrinkle resistant mould part structural representation of existing film hot-pressing.
Fig. 2 is the utility model structural representation.
Fig. 3 is for being the cover half structural representation of the utility model.
The specific embodiment
For the technological means, the creation characteristic that make the utility model, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the utility model.
The wrinkle resistant mould of the utility model film stretching; As shown in Figures 2 and 3; Comprise cover half 5 and dynamic model 6, cover half 5 is provided with the die cavity 51 that supplies film forming, and the outside of the corner of die cavity 51 also is provided with wrinkle resistant projection 52; Corresponding with wrinkle resistant projection 52, the correspondence position on the dynamic model 6 is provided with the corresponding wrinkle resistant groove 62 of shape and wrinkle resistant projection 52.So-called shape is corresponding, that is to say that the size of wrinkle resistant groove 62 and the degree of depth make wrinkle resistant projection 52 when the film stretching moulding, just can film be pressed into, and wrinkle resistant like this groove 62 can amass the film of having nowhere to go after the increase by receiving surface, makes product no longer wrinkling.
For strengthening wrinkle resistant effect, say wrinkle resistant projection 52 and wrinkle resistant groove 62 in the present embodiment for being designed to arc, the radian of this arc can be according to the Adjusting Shape of die cavity 51 corners, and the corner shape of this die cavity 51 is determined by shape of product.When the arc length of wrinkle resistant projection 52 and wrinkle resistant groove 62 is bigger slightly than the zone that all creases easily, the wrinkle resistant best results of the utility model.
In order to prevent that film from skidding, the utility model can be provided with anti-skidding line (not shown) at the end face of wrinkle resistant projection 52 and the bottom surface of wrinkle resistant groove 62, the frictional force of this anti-skidding line film surface when can increase drawing and forming.
Whether fold situation and the hardened layer that the degree of depth of wrinkle resistant groove 62 is looked film destroys and decides, as designs deeply, and the film hardened layer can suffer to destroy (drawing crack), design shallowly, and then the improvement of film fold is not thorough.When evidence highly was 5-6mm when moulding, the optimum depth of wrinkle resistant groove 62 was 1mm, and wrinkle resistant groove 62 is 4mm apart from die cavity 51 optimum distance the most nearby.
Use the wrinkle resistant mould of the utility model film stretching, can well solve the wrinkling problem of film when hot-forming, effect is quite remarkable, and the product yield is up to 95% in the test.
More than show and described the advantage of basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (6)
1. wrinkle resistant mould of film stretching; Comprise dynamic model and cover half, cover half is provided with the die cavity that supplies film forming, it is characterized in that; Also be provided with wrinkle resistant projection in the outside, said die cavity corner on the said cover half, correspondence position is provided with the shape wrinkle resistant groove corresponding with wrinkle resistant projection on the said dynamic model.
2. the wrinkle resistant mould of film stretching according to claim 1 is characterized in that, said wrinkle resistant projection and said wrinkle resistant groove are arc.
3. the wrinkle resistant mould of film stretching according to claim 1 is characterized in that, the arc length that said wrinkle resistant projection and said wrinkle resistant groove are is greater than the district that creases easily on the corner.
4. the wrinkle resistant mould of film stretching according to claim 2 is characterized in that the degree of depth of said wrinkle resistant groove is 1mm.
5. the wrinkle resistant mould of film stretching according to claim 2 is characterized in that said wrinkle resistant groove is the most nearby apart from die cavity 4mm.
6. the wrinkle resistant mould of film stretching according to claim 1 is characterized in that the end face of said wrinkle resistant projection and the bottom surface of said wrinkle resistant groove are equipped with anti-skidding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204090225U CN202271523U (en) | 2011-10-24 | 2011-10-24 | Anti-crease mold for thin-film drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204090225U CN202271523U (en) | 2011-10-24 | 2011-10-24 | Anti-crease mold for thin-film drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202271523U true CN202271523U (en) | 2012-06-13 |
Family
ID=46191908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204090225U Expired - Fee Related CN202271523U (en) | 2011-10-24 | 2011-10-24 | Anti-crease mold for thin-film drawing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202271523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180394A (en) * | 2016-07-13 | 2016-12-07 | 安徽顺彤包装材料有限公司 | A kind of anti-fringe margin confection receiver mould |
-
2011
- 2011-10-24 CN CN2011204090225U patent/CN202271523U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180394A (en) * | 2016-07-13 | 2016-12-07 | 安徽顺彤包装材料有限公司 | A kind of anti-fringe margin confection receiver mould |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20141024 |
|
| EXPY | Termination of patent right or utility model |