阅读说明：本技术 基于压缩注塑与贴膜的电池盖加工方法及电池盖 (Battery cover processing method based on compression injection molding and film pasting and battery cover ) 是由 肖诗烍 寇彪 龙红辉 熊谓 袁强 杜军红 葛振纲 于 2021-07-05 设计创作，主要内容包括：本申请公开了基于压缩注塑与贴膜的电池盖加工方法及电池盖,该加工方法包括：所述电池盖加工方法包括：基于目标渐变厚度加工待使用的模具；向所述模具内压缩注塑素材胶,形成具有一目标渐变厚度的ICM底片；在上述ICM底片上通过贴膜工艺粘贴一层膜片,形成电池盖。电池盖,基于所述的电池盖加工方法加工而成。本申请采用压缩注塑与贴膜工艺使得电池盖的成片厚度边缘具有目标渐变厚度,从而实现与现有复合板电池盖的等高,从而实现与同一中框装配兼容。(The application discloses a battery cover processing method based on compression injection molding and film pasting and a battery cover, wherein the processing method comprises the following steps: the battery cover processing method comprises the following steps: processing a mold to be used based on the target gradual thickness; compressing and injecting material glue into the mold to form an ICM bottom plate with a target gradual thickness; and adhering a layer of membrane on the ICM bottom plate by a membrane adhering process to form the battery cover. The battery cover is processed based on the battery cover processing method. According to the battery cover, the compression injection molding and film pasting processes are adopted, so that the edge with the target gradual change thickness of the sheet thickness of the battery cover is formed, the battery cover is equal to the battery cover of the existing composite board in height, and the battery cover is compatible with the same middle frame in assembly.)

1. The battery cover processing method based on compression injection molding and film pasting is characterized by comprising the following steps: processing a mold to be used based on the target gradual thickness; compressing and injecting material glue into the mold to form an ICM bottom plate with a target gradual thickness; and adhering a layer of membrane on the ICM bottom plate by a membrane adhering process to form the battery cover.

2. The method as claimed in claim 1, wherein the target progressive thickness is 0.45 to 0.60 mm.

3. The battery cover processing method according to claim 1, wherein the thickness of the battery cover is 0.55 to 0.70 mm.

4. The battery cover processing method according to any one of claims 1 to 3, wherein the material adhesive is made of a transparent material.

5. The method of manufacturing a battery cover according to any of claims 1 to 3, wherein the step of attaching a film sheet to the ICM substrate by a film attaching process further comprises: and (5) carrying out surface curtain coating processing.

6. A battery cover processed based on the battery cover processing method of any one of claims 1 to 5.

7. The battery cover of claim 6, wherein the battery cover comprises: an ICM backsheet and a film sheet attached to the ICM backsheet.

8. The battery cover of claim 6, wherein said ICM backsheet has a target taper thickness, said target taper thickness being 0.45-0.60 mm.

9. The battery cover according to any of claims 6 to 8, wherein the thickness of the battery cover is 0.55-0.70 mm.

10. A battery cover according to any one of claims 6 to 8, wherein the ICM substrate is formed by compression injection moulding using a transparent glue.

Technical Field

The application belongs to the technical field of battery cover processing, and particularly relates to a battery cover processing method based on compression injection molding and film pasting and a battery cover.

Background

The appearance structure of the existing mobile phone pursues the characteristics of lightness, thinness and dazzling, the common three-piece (front shell, middle frame and battery cover) disassembling mode becomes the mainstream design, wherein the appearance texture of the battery cover and the dazzling sticking film are deeply touted by the market. The two process effects of the current battery cover compression injection molding, film pasting process and composite board process can realize the characteristics of lightness, thinness and dazzling, and the battery cover compression injection molding process and the film pasting process also become the main printing process of the future mobile phone market. However, as shown in fig. 1, the limit glue thickness of the battery cover 10, which is a finished product of the existing composite board process, is 0.55mm and can only meet the design of the same thickness, and how to optimize the compression injection molding and film pasting processes to realize the adaptability of the battery cover and the existing middle frame, so that the battery cover prepared by the composite board process is replaced from the aspects of economy, time cost and the like, is a technical problem to be solved urgently.

Disclosure of Invention

In view of the above-mentioned shortcomings or drawbacks of the prior art, the present application provides a battery cover and a method for manufacturing the same.

In order to solve the technical problem, the application is realized by the following technical scheme:

the application provides a battery cover processing method based on compression injection molding and film pasting on one hand, and the battery cover processing method comprises the following steps: processing a mold to be used based on the target gradual thickness; compressing and Molding the material glue into the mold to form an ICM (Injection-Compression Molding) bottom plate with a target gradual thickness; and adhering a layer of membrane on the ICM bottom plate by a membrane adhering process to form the battery cover.

Optionally, in the method for processing a battery cover, the target gradual thickness is 0.45-0.60 mm.

Optionally, in the method for processing a battery cover, the thickness of the battery cover is 0.55-0.70 mm.

Optionally, in the battery cover processing method, the material glue is made of a transparent material.

Optionally, in the method for processing a battery cover, the adhering a film sheet on the ICM substrate by a film adhering process further includes: and (5) carrying out surface curtain coating processing.

The battery cover is further provided and processed by the battery cover processing method.

Optionally, the battery cover includes: an ICM backsheet and a film sheet attached to the ICM backsheet.

Optionally, the battery cover above, wherein the target graded thickness is 0.45-0.60 mm.

Optionally, the battery cover is provided, wherein the thickness of the battery cover is 0.55-0.70 mm.

Optionally, in the battery cover, a material adhesive used in compression injection molding of the ICM substrate is made of a transparent material.

Compared with the prior art, the method has the following technical effects:

the battery cover is made to have target gradually-changed thickness at the edge with the piece thickness by adopting compression injection molding and film pasting processes, so that the battery cover is equal to the battery cover of the existing composite board in height, and the battery cover is compatible with the same middle frame in assembly;

furthermore, the limitation of the thin-wall injection molding process is limited, the compression injection molding and film pasting processes are adopted in the battery cover, so that the edge of the battery cover with the thickness gradually changed from 0.55mm to 0.70mm, the battery cover is equal to the battery cover with the existing composite board in height of 0.55mm, and the battery cover is compatible with the same middle frame in assembly;

in the application, after the thickness of the glue is gradually adjusted from the edge of a battery cover compression injection molding material to the edge of a large-surface glue by a film pasting process to be 0.45-0.55 mm, the thickness of the glue at the edge of a finished product is 0.55mm after the film is pasted (the thickness of the film is 0.1mm), and the glue is kept equal to the edge of the finished product of the composite board with the thickness of 0.55 mm; the battery cover assembly consistency of the two processes is effectively ensured under the same middle frame surrounding bone height.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1: the structure schematic diagram of the prior composite plate battery cover;

FIG. 2: the battery cover according to an embodiment of the present application is schematically configured.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 2, in one embodiment of the present application, a battery cover processing method based on compression injection molding and film pasting includes: processing a mold to be used based on the target gradual thickness; compressing and injecting material glue into the mold to form an ICM bottom plate with a target gradual thickness; and adhering a film on the ICM substrate by a film adhering process to form a battery cover 20.

The battery cover is limited by the limitation of a thin-wall injection molding process, the compression injection molding and film pasting processes are adopted in the application, so that the edge with the target gradual thickness of the battery cover 20 is formed at the edge with the sheet thickness, the battery cover is equal to the battery cover 10 (shown in figure 1) of the existing composite plate in height, and the battery cover is compatible with the same middle frame in assembly; specifically, in the present embodiment, the target gradual thickness is 0.45-0.60mm, and after the target gradual thickness is combined with the membrane, the thickness of the formed battery cover 20 is 0.55-0.70mm, so that the battery cover is as high as the existing composite plate battery cover by 0.55mm, and thus the battery cover is compatible with the same middle frame.

Preferably, the material glue is made of transparent materials. Through the setting of above-mentioned transparent material, can select colored diaphragm to laminate to satisfy different crowds' user demand.

Wherein, the whole laminating process of the membrane is finished in a membrane laminating machine. Firstly, synchronously placing a membrane and a compression injection molding material into a laminating machine, and placing the laminating material into a bottom die of a laminating jig; then, aligning and attaching the clamping diaphragm of the equipment mechanical arm with an attaching material on the jig base through a CCD positioning grabbing point; and finally, pressing the upper cover of the attaching jig downwards to complete the attaching of the diaphragm and the ICM film.

Further, pasting a layer of film on the ICM substrate by a film pasting process further comprises: and a surface curtain coating processing step, wherein the battery cover 20 after film pasting can be subjected to patterning and other treatments through a surface spraying technology, so that the product richness of the battery cover 20 is improved, and the requirements of different users are met.

The compression injection molding process in the industry is limited by the requirements on material fluidity and overall strength, the limit thickness of the large surface is 0.6mm, the thickness of the finished product is 0.7mm after a thick film sheet of 0.1mm is attached, and the thickness of the finished product is not compatible with the thickness of the finished product of a composite board with the thickness of 0.55 mm. In the application, the thickness of the meat is 0.55mm at the edge of the material in the compression injection molding process, and the thickness gradually changes to 0.7mm on the large surface; wherein, the thickness of the edge of 0.55mm meets the compatibility with the thickness of 0.55mm of the composite board, and the thickness of the big surface of 0.7mm meets the minimum thickness requirement of the compression injection molding limit.

In another aspect of the present application, a battery cover 20 is further provided, which is processed based on the battery cover 20 processing method.

Wherein the battery cover 20 includes: an ICM backsheet and a film sheet attached to the ICM backsheet. According to the composite plate battery cover, the compression injection molding and film pasting processes are adopted, so that the edge of the battery cover 20 with the thickness varying in the target range is provided with the target thickness, the height of the battery cover 20 with the existing composite plate is equal, and the battery cover is compatible with the same middle frame in assembly.

Optionally, the target graded thickness is 0.45-0.60 mm.

Optionally, the thickness of the battery cover 20 is 0.55-0.70 mm.

In this embodiment, after the battery cover 20 is subjected to compression injection molding and injection molding material of the film pasting process, the thickness of the glue at the edge of the finished product is gradually adjusted from 0.45mm to 0.55mm from the edge of the large-surface glue, and the glue thickness at the edge of the finished product is 0.55mm after the film is pasted (the film thickness is 0.1mm), and the glue thickness is equal to the edge of the finished product of the composite board, which is 0.55 mm; the battery cover 20 can be assembled consistently by two processes at the same height of the middle frame.

Transparent material glue is adopted when the ICM bottom plate is formed by compression injection molding. Through the setting of above-mentioned transparent material, can select colored diaphragm to laminate to satisfy different crowds' user demand.

Wherein, the other technical characteristics are described in the processing method part and are not repeated herein.

In this embodiment, the battery cover 20 prepared by the compression injection molding and film pasting process has a light transmittance of more than 92% and good visual permeability of UV texture and glare effect in view of appearance effect; the surface hardness is between 1-2H, the maximum limit thickness of the finished product is 0.7mm, the product can be designed with different thicknesses, wherein the membrane and the ICM can be prepared in parallel, and the batch preparation period of mass production can be controlled to be about 8 days. The battery cover 10 (shown in fig. 1) prepared by the existing composite board process has the light transmittance of more than 92% from the appearance effect, and the visual permeability of the UV texture and the colorful effect is inferior to that of the compression injection molding and film pasting process; the surface hardness is more than 2H, the maximum limit thickness of the finished product is 0.55mm, the product can be designed to be equal in thickness, the whole process is realized on the plate, and the period of mass production and material preparation is 10 days.

Therefore, through the arrangement, the edge of the thickness of the battery cover 20 is gradually changed from 0.55mm to 0.70mm by adopting the compression injection molding and film pasting processes, so that the battery cover is 200.55mm as high as the existing composite plate battery cover, and is compatible with the same middle frame in assembly; compared with the existing composite board process, the battery cover 20 manufactured by the compression injection molding and film sticking process has good UV texture and dazzling effect visual permeability, can be designed in different thicknesses, and has a relatively short processing and manufacturing period; and in order to meet the requirements that the battery cover 20 is compatible with the middle frame in the two processes, the material development cost of the middle frame structure is reduced, and the material management cost can also be reduced. In conclusion, the application has good market application prospect.

In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The above embodiments are merely to illustrate the technical solutions of the present application and are not limitative, and the present application is described in detail with reference to preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made in the present invention without departing from the spirit and scope of the present invention and shall be covered by the appended claims.