CN112477493A

CN112477493A - Shell, preparation method thereof and mobile terminal

Info

Publication number: CN112477493A
Application number: CN202011293893.5A
Authority: CN
Inventors: 竹岩; 熊立; 陈余溶; 叶富强; 朱永强
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-03-12

Abstract

The application discloses a shell, a preparation method of the shell and a mobile terminal. The preparation method of the shell comprises the following steps: acquiring a first texture mould and a second texture mould, wherein the texture patterns of the first texture mould and the second texture mould are different; splicing the first texture mold and the second texture mold to obtain a female mold; copying the female die to obtain a sub die; performing transfer printing treatment on the plate through the sub-die to form a texture layer on one surface of the plate; and carrying out subsequent processing on the plate to obtain a finished shell. According to the method, the target die is fixedly spliced in a mode of combining porous positioning and linear positioning, so that the splicing accuracy is improved. In addition, the method adopts a porous positioning mode to fix the plate in a hot bending die of a hot bending machine, so that the occurrence of texture deviation in the hot bending forming process is prevented.

Description

Shell, preparation method thereof and mobile terminal

Technical Field

The application relates to the technical field of preparation, in particular to a shell, a preparation method of the shell and a mobile terminal.

Background

In the prior art, in order to meet aesthetic requirements of mobile terminal users such as smart phones, a housing of a mobile terminal is usually made of a composite board having a three-dimensional curved surface. Generally, the shell with the three-dimensional curved surface can also realize richer visual effects by means of texture splicing.

The texture splicing refers to processing texture molds with different texture patterns through a Computer Numerical Control (CNC) precision machine to form a required shape and size, splicing the processed texture molds to form a master mold, and then performing a subsequent production process.

However, in the texture splicing process and the subsequent hot-bending forming process, the problems of inaccurate texture splicing, deviation of the texture after hot-bending forming and the like may exist, and the final effect of the product is further affected.

In view of the above, how to solve the above problems possibly existing in the process of manufacturing the texture splicing sheet in the prior art becomes an important issue for relevant technicians and researchers.

Disclosure of Invention

The embodiment of the application provides a shell, a preparation method of the shell and a mobile terminal, and aims to solve the problems that texture splicing is inaccurate in the preparation process of the existing shell, the texture deviates after hot bending forming and the like.

According to a first aspect of the present application, an embodiment of the present application provides a method for manufacturing a housing, including the following steps: acquiring a first texture mould and a second texture mould, wherein the texture patterns of the first texture mould and the second texture mould are different; splicing the first texture mold and the second texture mold to obtain a female mold; copying the master die to obtain a sub die; performing transfer printing treatment on the plate through the sub-die to form a texture layer on one surface of the plate; and carrying out subsequent processing on the plate to obtain the finished shell.

Optionally, the first texture mold and the second texture mold are machined by a numerical control machine according to the preset size of the shell.

Optionally, a substrate is provided, and the first texture mold and the second texture mold are fixedly spliced on the substrate by combining porous positioning and line positioning to form the master mold.

Further, the plate is subjected to transfer printing treatment by utilizing the sub die copied by the female die, so that a texture layer is formed on one surface of the plate.

Further, after the step of forming the texture layer on one surface of the plate, the method further comprises the step of forming a coating layer on the side, away from the plate, of the texture layer.

Further, after the step of forming the coating layer on the side of the texture layer far away from the plate, the method further comprises the step of forming an ink layer on the side of the coating layer far away from the texture layer.

Further, after the step of forming the ink layer on the side of the film coating layer away from the texture layer, the method further comprises the steps of fixing the plate in a hot press in a porous positioning mode, and carrying out hot bending forming treatment on the plate according to the preset shape of the shell.

Further, after the step of subjecting the sheet material to the hot-roll forming process, the method further comprises subjecting the sheet material to a strengthening process to form a surface strengthening layer on a side of the sheet material away from the texture layer, so as to obtain a finished shell.

According to a second aspect of the present application, embodiments of the present application provide a housing, which is prepared by the above-described method for preparing a housing.

Further, the shell comprises a plate and a texture layer arranged on one surface of the plate, wherein the texture layer comprises a first texture area and a second texture area, and the texture patterns of the first texture area and the second texture area are different.

Further, the housing further comprises: the ink comprises an electroplated layer, an ink layer and a surface strengthening layer; the electroplated layer and the ink layer are sequentially arranged on one side of the texture layer, which is far away from the plate; the surface strengthening layer is arranged on the surface of one side of the plate far away from the texture layer.

According to a third aspect of the present application, embodiments of the present application provide a mobile terminal including a housing prepared by the foregoing preparation method.

The embodiment of the application provides a shell, a preparation method thereof and a terminal. The preparation method forms a master die with spliced texture, and shells with different texture patterns are prepared by utilizing a sub die copied by the master die. In the step of splicing the texture molds with different texture patterns into the female mold, the female mold is fixedly spliced by adopting a mode of combining porous positioning and line positioning, so that the accuracy of splicing the textures is improved. In the hot bending forming step, the plate is fixed in a hot bending machine in a porous positioning mode, so that the occurrence of texture deviation in the hot bending forming process is prevented.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic flow chart of a method for manufacturing a housing according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a texture pattern of a housing according to an embodiment of the present disclosure.

Fig. 3 is a schematic view of a film structure of a housing according to an embodiment of the present disclosure.

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. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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.

Specifically, referring to fig. 1, a flow chart of a method for manufacturing a housing according to an embodiment of the present application is schematically illustrated. As shown, the disclosed method of making the housing may include the steps of:

step S101: and acquiring a first texture mould and a second texture mould, wherein the texture patterns of the first texture mould and the second texture mould are different.

Specifically, in this step, two texture molds having different texture patterns are first provided, and then the two molds are processed by a numerical control machine (CNC) according to a preset size of the housing to obtain a first texture mold and a second texture mold. Wherein, the texture mould can be made of metal or glass material. In other embodiments, more than two texture molds having different texture patterns may be provided, such as four texture molds having different texture patterns. Accordingly, the CNC machining is not limited to the first texture mold and the second texture mold, and may include a third texture and a fourth texture.

Step S102: and splicing the first texture mold and the second texture mold to obtain the female mold.

Specifically, in this step, a substrate is provided first, and in this embodiment, the material of the substrate is not particularly limited, and those skilled in the art can select the substrate according to actual needs. The first and second texture molds are then fixedly spliced to the substrate. Generally, in order to ensure the accuracy of mold splicing, a porous positioning or a wire positioning or the like is adopted to fix the mold. In this embodiment, a combination of multi-hole positioning and line positioning is selected, for example, a combination of four-hole positioning and cross line positioning may be adopted to fixedly splice the first texture mold and the second texture mold to the substrate. In other embodiments, the fixing manner of the mold is not limited thereto. As can be seen from the foregoing, in other embodiments, the female mold can also be formed by splicing a first texture mold, a second texture mold, a third texture mold and a fourth texture mold, which can be specifically selected according to actual design requirements.

Step S103: and copying the master die to obtain the sub die.

Specifically, in this step, the copied daughter mold has exactly the same texture pattern as the master mold. The sub-mold may be formed of UV (Ultra Violet, ultraviolet, or UV) glue. And (3) transferring the UV glue on the texture splicing female die to obtain the UV texture die with the texture pattern completely the same as that of the female die. The UV texture mold is a sub mold, and then the texture pattern of the sub mold is transferred to a product such as a plate material to form a texture layer on the product such as a plate material.

Step S104: and performing transfer printing treatment on the plate through the sub-die to form a texture layer on one surface of the plate.

Specifically, in this step, a sheet material is first provided, which is an integral part of the outer shell, i.e., the outer shell is obtained by performing a series of processes on the sheet material. The material of the plate may be Polycarbonate (PC), polymethyl methacrylate (PMMA), plastic, or composite plate. In the present embodiment, the thickness of the plate material is not particularly limited, and those skilled in the art can select the thickness according to actual requirements. In this embodiment, the texture pattern of the sub-mold may be transferred to the plate material by UV transfer. The UV transfer printing mode is to achieve different texture effects on the surface of one side of the selected plate in a UV transfer printing mode. For example, the process flow can be as follows: coating a layer of UV glue on the surface of one side of the selected plate, pressing corresponding texture patterns on the UV glue through a sub die with the texture patterns, and obtaining a texture layer with the corresponding texture patterns on one side of the plate after ultraviolet curing treatment, wherein the texture patterns of the texture layer correspond to the texture patterns of the master die and the sub die. In some other embodiments, the texture transfer of the sheet material may further include: a spray painting printing method, a rubber head printing method, a screen printing method, a mechanical wire drawing printing method, or the like.

Step S105: and forming a coating film layer on one side of the texture layer, which is far away from the plate.

Specifically, in this step, one material or a mixture of a plurality of materials of silicon, a compound of silicon, chromium, indium oxide, tin oxide, or the like may be subjected to plating treatment to form the plating layer. In this embodiment, the thickness of the coating layer may be 40 nm to 45 nm, and the light transmittance of the coating layer may be 5% to 8%. The coating layer can be formed by vacuum evaporation, magnetron sputtering or the like.

Step S106: and forming an ink layer on one side of the coating layer, which is far away from the texture layer.

Specifically, in this step, the ink layer is preferably formed by screen printing. In this embodiment, the ink layer may include three sub-layers, where the first layer and the second layer are both a bright black ink layer, and after the first layer is printed, the board is heated at 80 degrees for 30 minutes. And repeating the operation of the first layer after the second layer is printed. And finally, printing a third layer of ink, wherein the third layer is black matte ink, and after printing is finished, heating the plate at 80 ℃ for 60 minutes. In some other embodiments, the type of the ink, the color of the ink, the number of printing layers of the ink, and the subsequent processing manner may be adjusted according to actual needs.

Step S107: the plate is fixed in a hot press in a porous positioning mode, and hot bending forming processing is carried out on the plate according to the preset shape of the shell.

Specifically, in this step, the sheet material is first placed in a hot bending die of a hot press, and the hot bending die is selected according to a preset shape of the shell. In order to prevent the plate from texture deviation during hot bending, the plate is preferably fixed in a seven-hole positioning manner in the embodiment. In the embodiment, the material of the hot bending mold needs to be a high temperature resistant material, such as high temperature resistant silica gel. After the steps of heating, pressing, cooling and the like, the plate has the shape preset by the shell. In this example, the heating time for the plate material was 35 seconds, the cooling time was 16 seconds, and the cooling intake air weight was 25 kg.

Step S108: and (4) carrying out strengthening treatment on the plate to form a surface strengthening layer on the side of the plate far away from the texture layer so as to obtain the finished shell.

Specifically, in this step, a reinforcing liquid is first applied to the surface of the plate on the side away from the texture layer, and then the reinforcing liquid is cured by a mercury lamp to form a surface reinforcing layer. The surface strengthening layer can enable the surface of the shell to have the characteristics of wear resistance, fingerprint resistance and the like, and can improve the use experience of a user.

As described above, in the embodiment of the present application, a master mold with a texture split is formed first, and then shells with different texture patterns are prepared by using the master mold to copy the imprinted sub-mold. In the step of splicing the texture molds with different texture patterns into the female mold, the accuracy of splicing the textures can be improved by fixedly splicing in a mode of combining four-hole positioning and line positioning. In the hot bending forming step, the plate is fixed in a hot bending die in a seven-hole positioning mode, so that the occurrence of texture deviation in the hot bending forming process is prevented.

Fig. 2 to fig. 3 show a shell 200, wherein fig. 2 is a schematic diagram of a texture pattern of the shell according to the embodiment of the present application; fig. 3 is a schematic view of a film structure of a housing according to an embodiment of the present disclosure.

Referring first to fig. 2, as shown in the figure, the housing 200 may be divided into a first texture region 201 and a second texture region 202, and the texture pattern of the first texture region 201 is different from the texture pattern of the second texture region 202.

Next, referring to fig. 3, as shown, the housing 200 having a stacked structure includes: the plate 210, the texture layer 211 on one side of the plate 210, and the coating layer 220 and the ink layer 230 are sequentially arranged on one side of the texture layer 211 far away from the plate 210. On the side of the panel 210 remote from the textured layer 211 is a surface strengthening layer 240.

It should be noted that the outer shell includes the aforementioned sheet material or the sheet material prepared by the aforementioned method, and therefore, the outer shell has all the features and advantages of the aforementioned sheet material or the sheet material prepared by the aforementioned method, and further description thereof is omitted.

The embodiment of the present application further provides a mobile terminal (not shown in the drawings), which employs the housing described above. In particular, the mobile terminal may be a mobile phone or a smart phone, a portable game device, a tablet computer, a wearable device, a music playing device, a data storage device, and the like.

The beneficial effect of this application lies in: a master die with spliced textures is formed, and shells with different texture patterns are prepared by utilizing a sub die copied by the master die. In the step of splicing the texture molds with different texture patterns into the female mold, the molds are fixed in a mode of combining porous positioning and linear positioning, so that the splicing accuracy is improved. In the hot bending forming step, the plate is fixed in a hot bending die in a porous positioning mode, so that the occurrence of texture deviation in the hot bending forming process is effectively prevented.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above detailed description is given to the housing, the preparation method thereof and the mobile terminal provided in the embodiments of the present application, and a specific example is applied in the detailed description to explain the principle and the implementation manner of the present application, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A method of making a housing, the method comprising:

acquiring a first texture mould and a second texture mould, wherein the texture patterns of the first texture mould and the second texture mould are different;

splicing the first texture mold and the second texture mold to obtain a female mold;

copying the female die to obtain a sub die;

performing transfer printing treatment on the plate through the sub-die to form a texture layer on one surface of the plate; and

and carrying out subsequent processing on the plate to obtain a finished shell.

2. The method of making a housing of claim 1, wherein the step of obtaining a first texture mold and a second texture mold comprises: the first texture mould and the second texture mould are machined by a numerical control machine according to the preset size of the shell.

3. The method of claim 1, wherein the step of splicing the first textured mold and the second textured mold to obtain a master mold comprises: and providing a substrate, and fixedly splicing the first texture mould and the second texture mould on the substrate by adopting a mode of combining porous positioning and line positioning to form the female mould.

4. The method of manufacturing a cover according to claim 1, wherein after the step of forming the textured layer on the surface of the plate, the method further comprises forming a coating layer on a side of the textured layer away from the plate.

5. The method of manufacturing a cover according to claim 4, wherein after the step of forming the coating layer on the side of the texture layer away from the board, the method further comprises forming an ink layer on the side of the coating layer away from the texture layer.

6. The method for manufacturing a housing according to claim 5, wherein after the step of forming the ink layer on the side of the coating layer away from the texture layer, the method further comprises: and fixing the plate in a hot press in a porous positioning mode, and carrying out hot bending molding treatment on the plate according to the preset shape of the shell.

7. The method of manufacturing an enclosure of claim 6, wherein after the step of subjecting the sheet to the hot-roll forming process, the method further comprises subjecting the sheet to a strengthening process to form a surface strengthening layer on a side of the sheet remote from the textured layer to obtain the finished enclosure.

8. A casing produced by the production method according to any one of claims 1 to 7;

the shell comprises a plate and a texture layer arranged on one surface of the plate, the texture layer comprises a first texture area and a second texture area, and texture patterns of the first texture area and the second texture area are different.

9. The housing of claim 8, wherein the housing further comprises: the ink comprises an electroplated layer, an ink layer and a surface strengthening layer; the electroplated layer and the ink layer are sequentially arranged on one side of the texture layer, which is far away from the plate; the surface strengthening layer is arranged on the surface of one side of the plate far away from the texture layer.

10. A mobile terminal, characterized in that it comprises a housing according to any of claims 8 to 9.