WO2018113099A1

WO2018113099A1 - Processing method for terminal housing, terminal housing, and terminal apparatus

Info

Publication number: WO2018113099A1
Application number: PCT/CN2017/075636
Authority: WO
Inventors: 张少辉; 岳永保; 冉涛
Original assignee: 华为技术有限公司
Priority date: 2016-12-22
Filing date: 2017-03-03
Publication date: 2018-06-28
Also published as: CN108476252A; CN108476252B

Abstract

The present application relates to the field of metal-related processing, and particularly relates to a processing method for a terminal housing, terminal housing, and terminal apparatus. The present invention enables low-cost and high-efficiency removal of molding flash. Provided in the present application is a processing method for a terminal housing, the method comprising: forming a protection layer on an outer surface of a main body of a metal housing, the protection layer employing an acid- and alkali-resistant material; processing the metal housing main body formed with the protection layer to form a holed structure; employing a nano molding process to form a plastic layer in the holed structure; grinding molding flash to remove the same; and removing the protection layer. Embodiments of the present application are applicable to manufacturing of terminal housings and terminal apparatuses.

Description

Terminal housing processing method, terminal housing and terminal device

This application claims priority to Chinese Patent Application No. 201611199874.X, filed on Dec. 22, 2016, entitled "A Method for Removing Nano-Molded Injection Molding", the entire contents of which are incorporated by reference. In this application.

Technical field

The present application relates to the field of metal processing technology, and in particular, to a method for processing a terminal housing, a terminal housing, and a terminal device.

Background technique

In the field of electronic devices, especially mobile terminal devices, metal casings are increasingly favored and sought after by consumers due to their excellent hand and texture; at the same time, due to the need for antenna and signal leakage, as well as earphone holes, USB holes, etc. For the setting, it is usually necessary to make a hollow structure on the appearance surface of the metal casing, such as an antenna cut-off groove, a headphone hole and a USB hole, and form a plastic layer in the hollow structure. At present, the most commonly used technology is Nano Molding Technology (NMT). The nano-injection technology perfectly achieves the high-strength combination of metal and plastic, but at the same time, it is easy to form an overflow glue on the edge of these hollow structures during the injection molding process. Affect the appearance of the appearance.

In the prior art, in order to prevent or remove the overflow glue, the following two technical solutions are mainly used. In one technical solution, before the plastic layer is formed in the hollow structure by the nano-injection molding process, the edges of the hollow structures are reserved. A certain machining allowance is produced so that after injection molding, the milling removes excess metal and polishes the polished metal surface. In this process, since a certain machining allowance is reserved, the metal shell used in the injection molding is heavy, and the amount of metal to be removed by milling after injection molding is large and the cost is high. In another technical solution, a metal shell having a hollow structure is first processed, and then a plastic layer is formed in the hollow structure directly by a nano-injection process, and then the overflow gel is removed by a polishing method, but for the nano-injection process In the nano-pore treatment of the metal shell, the bonding strength between the plastic and the metal product is strong, so that the polishing and polishing efficiency is low, the cost is high, and the effect is poor when the overflow rubber is removed.

Summary of the invention

The main object of the present application is to provide a method for processing a terminal housing, a terminal housing, and a terminal device including the same, which can remove the overflow glue at low cost and high efficiency.

In order to achieve the above object, the patent application adopts the following technical solutions:

In a first aspect, the present application provides a method for processing a terminal housing, comprising: forming a protective layer on an outer surface of a metal shell body, the material of the protective layer being an acid and alkali resistant material; and the metal forming the protective layer The shell body is processed to form a hollow structure; a nano-injection process is used to form a plastic layer in the hollow structure; the overflow of the plastic layer is polished to remove the overflow glue; and the protective layer is removed. When the plastic layer is formed in the hollow structure, the appearance surface of the metal shell body is protected by the protective layer, the bonding strength between the glue and the metal is greatly reduced, and the overflow of the glue is facilitated, thereby enabling low cost and high efficiency. Remove the spill.

In a possible implementation of the first aspect, the material of the protective layer comprises at least one of paint and ink.

In a possible implementation manner of the first aspect, removing the protective layer comprises: removing the protective layer, or dissolving and removing the protective layer with a solvent.

In a possible implementation manner of the first aspect, the forming a plastic layer in the hollow structure by using a nano-injection process comprises: performing nano-microporous treatment on the appearance surface of the metal shell body, and on the inner surface of the hollow structure Forming an adhesive layer; the material of the adhesive layer includes a binder; plastic is injected into the hollow structure to form a plastic layer.

In a possible implementation manner of the first aspect, after the protective layer is removed, the processing method further comprises: performing surface treatment on the design surface.

In a possible implementation manner of the first aspect, the surface of the design surface is subjected to sandblasting and anodizing.

In a possible implementation manner of the first aspect, the hollow structure includes at least one of an antenna blocking slot, a headphone hole, a USB hole, and a speaker hole.

In a second aspect, the present application provides a method for processing a terminal housing, comprising: forming a protective layer on a predetermined area of a design surface of the metal shell body, the protective layer being an acid-resistant and alkali-resistant material; and forming a protective layer The surface is oxidized to form an oxide film layer on the surface of the surface of the design surface that is not covered by the protective layer, and the oxide film layer is colored and sealed to cover the surface of the surface that is not covered by the protective layer. The area is dyed to a first color to form a first color layer; the protective layer is removed. When the appearance surface of the protective layer is oxidized to form an adsorption hole, and the dye is adsorbed by the adsorption hole, the surface of the predetermined area on the appearance surface is protected by the protective layer, so that the appearance surface is protected. The first color layer of the surface of the region not covered by the protective layer is relatively strong, and the color formed on the surface of the protective layer is easily peeled off, so that the contour of the first color layer formed is clear and distinct, so that The decorative appearance with different colors is formed on the same appearance surface, so that the appearance surface is more beautiful and neat.

In a possible implementation manner of the second aspect, the material of the protective layer is at least one of ink and paint.

In a possible implementation manner of the second aspect, removing the protective layer comprises: removing the protective layer, or dissolving and removing the protective layer with a solvent.

In a possible implementation manner of the second aspect, after the protective layer is removed, the processing method further includes: oxidizing the design surface on which the first color layer is formed, so that the first color is not on the design surface Forming an oxide film layer on the surface of the layer covering region, and coloring and sealing the oxide film layer to dye a second color in a region of the design surface not covered by the first color layer to form a second color layer .

In a third aspect, the present application provides a method for processing a terminal housing, comprising: S1, forming a first protective layer on a designated area of a design surface of the metal shell body, the first protective layer being an acid-resistant and alkali-resistant material; And oxidizing the design surface on which the first protective layer is formed to form an oxide film layer on a surface of the surface of the design surface not covered by the first protective layer, and coloring and sealing the oxide film layer, Dyeing a region of the design surface that is not covered by the first protective layer into a first color to form a first color layer; S3, removing the first protective layer to expose a metal surface of a designated region of the design surface; S4 Forming a second protective layer on the surface of the designated area of the exposed surface of the metal surface, the second protective layer being an acid-resistant and alkali-resistant material; and S5, oxidizing the surface of the surface on which the second protective layer is formed to be on the metal surface Forming an oxide film layer on a surface of the exposed region not covered by the second protective layer, and coloring and sealing the oxide film layer to dye the region of the predetermined region not covered by the second protective layer Forming a second color to form a second color layer; S6, removing the second protective layer; S7, repeating the above steps S4, S5, and S6 until forming on the appearance surface of the metal shell body At least three decorative effects in different colors. In this process, the predetermined area of the design surface of the metal shell body is protected, and the area of the design surface not covered by the first protective layer is oxidized and dyed, and then the surface of the designated area is The sub-areas are protected one by one, and the unprotected areas are oxidized and dyed, so that the outlines of the respective areas are clear and distinct, so that decorative effects with a plurality of different colors can be formed on the same design surface, so that the appearance is more beautiful. Neat; at the same time, each color layer formed by oxidation treatment and dyeing is relatively firm and not easy to fall off.

In a fourth aspect, the present application provides a terminal housing obtained by processing according to the processing method provided by the first aspect or the second aspect.

In a fifth aspect, the present application provides a terminal device including the terminal housing as provided above.

In a possible implementation manner of the fifth aspect, the terminal device is a mobile phone, a tablet computer, a digital camera, or a netbook.

It can be understood that any of the terminal housings provided above are processed by the corresponding methods provided above, and therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods provided above. , will not repeat them here.

DRAWINGS

1 is a flow chart of a method for processing a terminal housing provided by the present application;

2 is a schematic structural view of forming a protective layer on a metal shell body according to the present application;

Figure 3 is a cross-sectional view of the A-A' direction of Figure 2 provided by the present application;

4 is a schematic structural view of a processing antenna according to FIG. 2 according to FIG. 2;

Figure 5 is a cross-sectional view of the AA' direction based on Figure 4 provided by the present application;

6 is a schematic structural view of a hollow structure including a headphone hole, a USB hole, and a speaker hole provided by the present application;

7 is a schematic structural view of forming a plastic layer in a hollow structure based on FIG. 5 according to the present application;

FIG. 8 is a schematic structural diagram of the present invention after removing the protective layer based on FIG. 7; FIG.

9 is a flowchart of still another processing method of a terminal housing provided by the present application;

10 is a flowchart of still another processing method of a terminal housing provided by the present application;

FIG. 11 is a schematic structural diagram of forming a protective layer on a preset area of a design surface according to the present application;

FIG. 12 is a schematic structural diagram of forming a first color layer on a surface of the design surface not covered by the protective layer according to FIG. 11 according to FIG. 11;

FIG. 13 is a schematic structural diagram of removing the protective layer based on FIG. 12 according to the present application; FIG.

14 is a flowchart of still another processing method of a terminal housing provided by the present application;

FIG. 15 is a schematic structural diagram of forming a second color layer based on FIG. 13 according to the present application; FIG.

16 is a flowchart of a method for processing a terminal housing provided by the present application;

17 is a schematic structural view of forming a first protective layer in a designated area of a design surface according to the present application;

FIG. 18 is a schematic structural diagram of forming a first color layer based on FIG. 17 according to the present application; FIG.

FIG. 19 is a schematic structural diagram of removing a first protective layer based on FIG. 18 according to the present application; FIG.

20 is a schematic structural view of forming a second protective layer in a designated region of a exposed surface of a metal surface according to FIG. 19 according to the present application;

FIG. 21 is not the second protective layer covered by the exposed surface of the metal surface according to FIG. 20 provided by the present application. a schematic view of the area of the cover forming a second color layer;

FIG. 22 is a schematic structural diagram of removing the second protective layer based on FIG. 21 according to the present application; FIG.

FIG. 23 is a schematic structural diagram of forming a third color layer based on FIG. 22 provided by the present application.

Wherein, the appearance surface-1 of the metal shell body; the protective layer-2; the hollow structure-3; the plastic layer-4; the preset area of the appearance surface-A; the area of the design surface not covered by the protective layer-B; Color layer-1'; second color layer-2'; designated area of the design surface -A'; area of the design surface not covered by the first protective layer -B'; designated area of the exposed surface of the metal surface -A ₁ ' a first protective layer-21; a region of the exposed portion of the metal surface not covered by the second protective layer - A ₂ '; a second protective layer -22; a third color layer - 3'.

detailed description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Embodiment 1

The present application provides a method for processing a terminal housing. Referring to FIG. 1, the method includes:

S101, referring to FIG. 2 and FIG. 3, a protective layer 2 is formed on the design surface 1 of the metal shell body, and the material of the protective layer 2 is an acid-resistant and alkali-resistant material.

The metal shell body refers to a shell having a certain shape obtained by processing a metal material. Here, since the metal shell body is processed in S102 to form a hollow structure, the metal shell body herein refers to Set the metal shell of the hollow structure. The appearance surface 1 of the metal shell body is a surface that can be observed from the appearance as the name suggests. The protective layer 2 is a surface coating that protects the design surface 1 of the metal shell body.

In order to protect the design surface 1 of the metal shell body, the protective layer 2 does not first react with the metal, and secondly, the performance of the protective layer 2 is relatively stable. Therefore, the material of the protective layer 2 is an acid-resistant and alkali-resistant material.

In practical applications, the ink and the paint have excellent acid and alkali resistance. Therefore, for example, the material of the protective layer 2 may include at least one of ink and paint.

The specific manner of forming the protective layer 2 on the design surface 1 of the metal shell body is not limited, and the protective layer 2 may be formed on the design surface 1 of the metal shell body by printing, spraying, silk screen printing or the like.

S102. Referring to FIG. 4-6, the metal shell body on which the protective layer 2 is formed is processed to form a hollow structure 3.

The hollow structure 3 refers to a structure formed by penetrating the metal shell body and the protective layer 2, such that the protective layer 2 and the metal shell body at the position of the hollow structure 3 are both removed by milling. Taking the hollow structure 3 processed on the mobile phone case as an antenna blocking groove (as shown in FIG. 5 ), the protective layer 2 and the metal shell body at the position of the antenna blocking slot are removed, thereby forming an antenna having a metal inner surface. Partition slot.

The specific structure of the hollow structure 3 is not limited. For example, the hollow structure 3 may include at least one of an antenna blocking slot, a headphone hole, a USB hole, and a speaker hole. FIG. 6 is a schematic structural diagram of the hollow structure 3 including a headphone hole, a USB hole, and a speaker hole.

Wherein, the metal shell body formed with the protective layer can be processed by computer numerical control technology to form the hollow structure 3.

S103. Referring to FIG. 7, a plastic layer 4 is formed in the hollow structure 3 by a nano-injection process.

The step specifically includes: performing nanopore treatment on the design surface 1 of the metal shell body, and forming an adhesive layer on the inner surface of the hollow structure 3; the material of the adhesive layer includes a binder; and the hollow structure 3 is injected into the plastic to form a plastic layer 4.

Wherein, for different hollow structures 3, the structure of the corresponding plastic layer 4 is also different. Illustratively, when the hollow structure 3 is an antenna cut-off groove, the plastic layer 3 fills the antenna cut-off groove; When the structure 3 is a headphone hole or a USB hole, the plastic layer 4 is a thin layer formed on the inner surface of the earphone hole or the USB hole. The plastic layer 4 for different structures can be formed by different injection molding processes. Illustratively, when the plastic layer 4 needs to be formed on the inner surface of the earphone hole, the plastic is filled with the earphone hole by an injection molding process, and then removed by a milling process. Part of the plastic forms a headphone jack with a plastic inner surface.

Wherein, the appearance surface 1 of the metal shell body can be subjected to nanopore treatment by acid etching. At this time, since the protective layer 2 at the position of the hollow structure 3 is removed, the remaining design surfaces are still covered by the protective layer 2, Therefore, when the appearance surface 1 of the metal shell body is subjected to nanopore treatment, the protective layer 2 can protect the appearance surface covered by the protective layer 2, and is formed only on the inner surface of the metal exposed by the hollow structure 3. Nano-micropores, such that an adhesive layer is formed on the inner surface of the metal exposed by the hollow structure 3, and plastic is injected into the hollow structure 3 to form a plastic layer 4, and the plastic can enter the nano-micropores to be close to the metal surface. The combination of the remaining appearance surface is covered by the protective layer 2, which greatly reduces the bonding ability of the plastic to the rest of the design surface, so that the overflow glue is easily removed.

S104. Continuing to refer to FIG. 7, the glue 5 of the plastic layer 4 is polished to remove the glue 5.

Since the overflow rubber 5 is formed on the surface of the protective layer, the bonding ability of the overflow rubber and the metal is greatly reduced, and therefore, the polishing removal efficiency is high, and the removal effect is good.

S105. Removing the protective layer 2, and obtaining a structural diagram as shown in FIG.

The step specifically includes: removing the protective layer 2, or dissolving and removing the protective layer 2 with a solvent.

In the actual operation, the protective layer 2 may be polished while polishing and removing the overflow glue, and the protective layer 2 may also be removed together, or the protective layer 2 may be dissolved and removed by using a solvent after the overflow rubber is polished and removed. .

Here, when the protective layer 2 is dissolved and removed by a solvent, the solvent can be selected depending on the material of the protective layer 2 to be used. Illustratively, when the protective layer is an ink and the main component of the ink is a high-quality acrylic resin, the ink may be dissolved and removed using toluene or xylene.

Further, as shown in FIG. 9, after the protective layer 2 is removed, the processing method further includes: S106, performing surface treatment on the design surface.

There are various methods for surface treatment of the design surface 1 , and the surface of the design surface can be surface-treated according to actual needs to obtain a desired appearance decoration effect.

Illustratively, surface treatment of the design surface includes: sandblasting and anodizing the design surface.

The principle of sand blasting is to use the impact of high-speed sand flow to clean and roughen the surface of the workpiece, so that the mechanical properties of the surface of the material are improved, the fatigue resistance of the workpiece is improved, and the adhesion of the coating on the surface of the workpiece is enhanced, and the durability of the coating is prolonged. Sexuality also contributes to the leveling and decoration of the paint.

Anodizing refers to a material protection technique in which a metal material forms an oxide film on the surface thereof by applying an anode current in an electrolyte solution. After the surface anodization of the metal material or product, the corrosion resistance, hardness, wear resistance, insulation, heat resistance, etc. are greatly improved, so the anodizing treatment can be used as the final treatment process of the metal shell.

Further, since the anodized layer obtained by the anodizing treatment has a porous structure, it is easy to adsorb a dye and a colored substance, and thus it is possible to dye on the surface thereof to improve the decorativeness.

It should be noted that, when the surface of the design surface is surface-treated by sand blasting, the area where the plastic layer 4 is formed may be blocked. When the design surface is anodized, the material of the plastic layer 4 is Insulation, therefore, does not involve protection and obstruction of the plastic layer 4.

Of course, it should be noted that the surface treatment of the design surface 1 may further include a laser engraving, and at least one of a character and a pattern may be formed on the design surface 1.

The present invention provides a method for processing a terminal housing. The protective layer 2 is formed on the design surface 1 of the metal shell body, and the metal shell body on which the protective layer 2 is formed is processed to form a hollow structure 3. When the plastic layer 4 is formed in the hollow structure 3, the remaining design surface is covered by the protective layer 2, which greatly reduces the bonding strength between the glue and the metal, and facilitates the removal of the glue, thereby enabling the glue to be removed at low cost and high efficiency.

Embodiment 2

The present application provides a method for processing a terminal housing. Referring to FIG. 10, the method includes:

S201. Referring to FIG. 11, a protective layer 2 is formed on the predetermined area A of the design surface 1 of the metal shell body, and the protective layer 2 is an acid-resistant and alkali-resistant material.

Wherein, the metal shell body refers to a shell having a certain shape obtained by processing a metal material. The appearance surface 1 of the metal shell body is a surface that can be observed from the appearance as the name suggests. The protective layer 2 is a coating that protects the appearance surface of the metal shell body.

The shape and coverage of the preset area A of the design surface are not limited. In practical applications, the shape and coverage of the preset area A may be determined as needed, because in step S202, The area of the design surface 1 that is not covered by the protective layer 2 forms a first color layer, that is, the first color layer is formed in the remaining area except the preset area A of the design surface. Therefore, the preset area may be formed. The area of the graphic mark may also be a remaining area other than the graphic mark on the design surface. When the preset area is an area forming a graphic mark, the shape and coverage of the preset area are shaped and covered by the graphic mark. The scope is determined. The graphic mark can be at least one of a letter, a text, and a graphic.

In an example of the present application, as shown in FIG. 11, the preset area A is an area forming a graphic mark.

The specific manner of the protective layer 2 is not limited, and the protective layer 2 may be formed on the predetermined area A of the design surface 1 of the metal shell body by printing, spraying, silk screen printing or the like.

Illustratively, when the protective layer 2 is formed on the predetermined area A of the design surface 1 of the metal casing body by spraying, the remaining appearance surface on the metal shell body can be shielded by the covering object to avoid the protective layer. 2 Spray on the rest of the appearance.

S202, referring to FIG. 12, the appearance surface on which the protective layer 2 is formed is oxidized to form an oxide film layer on the surface of the surface B of the design surface 1 not covered by the protective layer 2, and the oxide film layer is formed. Coloring and sealing treatment to dye the region B of the design surface 1 not covered by the protective layer 2 into a first color to form a first color layer 1'.

Here, the oxidation treatment may be a chemical treatment or an anodization treatment, and an oxide film layer may be formed on the surface of the region B of the design surface 1 not covered by the protective layer 2, and the protective layer may not be present on the design surface. 2 coverage The surface of the region B forms a porous structure, which is favorable for the adsorption of the dye and the colored substance. At the same time, the surface of the predetermined region A is covered by the protective layer 2, and it is not easy to adsorb the dye and the colored substance even if the first color layer is dyed. 'It is also easy to fall off; therefore, the formed first color layer has a clear and distinct outline, which can form a significant contrast with other areas, so that a decorative effect with different colors can be formed on the design surface 1 to make the appearance surface 1 is more beautiful and tidy.

Anode treatment refers to a material protection technique in which a metal material forms an oxide film on the surface thereof by applying an anode current in an electrolyte solution.

The oxide film layer formed by chemical oxidation is much thinner than the oxide film layer formed by anodizing, has low corrosion resistance and hardness, is not easily colored, and has poor light resistance after coloring. At present, the anodizing treatment is the most used oxidation treatment method, and the color corrosion resistance and durability thereof are greatly improved.

S203, removing the protective layer 2, and obtaining a schematic structural diagram as shown in FIG.

Wherein, when the protective layer 2 is dissolved and removed by a solvent, the solvent may be selected according to the material of the protective layer 2 to be used. For example, when the protective layer 2 is an ink, the ink can be selected according to common knowledge. The organic solvent dissolves and removes the protective layer, and an organic solvent having good ink dissolution properties can also be selected according to experiments.

The present invention provides a method for processing a terminal housing by forming a protective layer 2 on a predetermined area A of the design surface 1 of the metal shell body, and oxidizing the appearance surface on which the protective layer 2 is formed, in the appearance An oxide film layer is formed on the surface of the surface B of the surface 1 not covered by the protective layer 2, and the oxide film layer is colored and sealed to be dyed in the region of the design surface not covered by the protective layer. Forming the first color layer 1 ′ by color, and removing the protective layer, the first color layer 1 ′ having a well-defined shape can be formed on the design surface, and therefore, when the first color pattern is formed on the design surface When decorating, the outline of the pattern is clear and distinct, making the appearance more beautiful and tidy.

It should be noted that, when the preset area A is an area forming a graphic mark, after the protective layer is removed, the preset area A may be surface-treated according to actual needs (for example, drawing, laser engraving, electroplating, printing, Anodizing, etc., such that the graphic mark forms a contrasting effect with the remaining area on the design surface (for the first color) to decorate the design surface 1; and when the preset area A is the graphic mark on the design surface 1 When the remaining layer is removed, the surface of the preset area A may be surface-treated (for example, drawing, laser engraving, electroplating, printing, anodizing, etc.) according to actual needs to obtain a finished shell product.

Embodiment 3

In another embodiment of the present application, on the basis of the second embodiment, as shown in FIG. 14, after the protective layer is removed, the processing method further includes: S204, referring to FIG. 15, forming the first color layer 1 The design surface 1 of the 'is oxidized to form an oxide film layer on the surface of the surface of the design surface 1 not covered by the first color layer 1', and the oxide film layer is colored and sealed to be The area of the design surface 1 that is not covered by the first color layer 1' is dyed into a second color to form a second color layer 2'.

It should be noted that the “area of the design surface not covered by the first color layer 1′” herein refers to the preset area A.

By oxidizing the design surface 1 on which the first color layer 1' is formed, the surface of the surface of the design surface 1 not covered by the first color layer 1' can be oxidized to a porous structure, and the porous structure is used to adsorb the dye and the colored The substance can further improve the abrasion resistance of the design surface 1 and improve the adhesion property of the dye to avoid discoloration.

The present application provides a method for processing a terminal housing by forming a protective layer 2 on a predetermined area A of the design surface 1 of the metal shell body, and performing oxidation treatment on the design surface 1 on which the protective layer 2 is formed. An oxide film layer is formed on a surface of the surface of the design surface not covered by the protective layer 2, and the oxide film layer is colored and sealed to dye the first color in a region of the design surface not covered by the protective layer. The first color layer 1 ′ is formed, and the protective layer 2 is removed, so that the metal on the surface of the surface of the design surface 1 that does not cover the first color layer 1 ′ is exposed, and the first color layer 1 is not covered on the design surface. The surface of the region is oxidized to an oxide film layer, and the oxide film layer is colored and sealed to form a second color on the surface of the design surface 1 that is not covered by the first color layer 1'. The two color layers 2', such that the formed first color layer 1' and the second color layer 2' have a clear and distinct outline, and can form a distinct contrast effect, so that different colors can be formed on the design surface 1. The decorative effect makes the appearance more beautiful. Jie.

Embodiment 4

The present application provides a method for processing a terminal housing, as shown in FIG. 16, including:

S1, referring to Fig. 17, a first protective layer 21 is formed in a designated area A' of the design surface 1 of the metal shell body, and the first protective layer 21 is an acid-resistant and alkali-resistant material.

Wherein, the metal shell body refers to a shell having a certain shape obtained by processing a metal material. The appearance surface 1 of the metal shell body is a surface that can be observed from the appearance as the name suggests. Exemplarily, when the metal shell body is a mobile phone case, the appearance surface 1 refers to an outer surface of the mobile phone case. The first protective layer 21 is a coating that protects the design surface 1 of the metal shell body.

In order to protect the design surface 1 of the metal shell body, the first protective layer 21 does not first react with the metal, and secondly, the performance of the first protective layer 21 is relatively stable. Therefore, the material of the first protective layer 21 is Acid and alkali resistant materials.

In practical applications, the ink and the paint have excellent acid and alkali resistance. Therefore, for example, the material of the first protective layer 21 may include at least one of ink and paint.

The first protective layer 21 is not limited in specific manner, and the first protective layer 21 may be formed on the designated area A' of the design surface 1 of the metal shell body by printing, spraying, silk screen printing or the like.

Illustratively, when the first protective layer 21 is formed on the designated area A' of the design surface 1 of the metal casing body by spraying, the remaining appearance surface on the metal shell body can be shielded by the covering object to avoid The first protective layer 21 is sprayed on the remaining design surface.

S2, referring to FIG. 18, the appearance surface 1 on which the first protective layer 21 is formed is oxidized to form an oxide film layer on the surface of the surface B' of the design surface 1 not covered by the first protective layer 21, and The oxide film layer is colored and sealed to dye the region B' of the design surface 1 not covered by the first protective layer 21 into a first color to form a first color layer 1'.

The step is the same as the specific operation method of the step S202 in the second embodiment. The surface of the area not covered by the protective layer is dyed into the first color, and details are not described herein.

S3. The first protective layer 21 is removed, and the metal surface of the designated area A' of the design surface 1 is exposed, and a schematic structural view as shown in FIG. 19 is obtained.

This step is basically the same as the specific operation method of step S203 in the second embodiment, and details are not described herein again.

S4. Referring to Fig. 20, a second protective layer 22 is formed in a designated region (represented by A ₁ ') of the exposed portion of the metal surface, and the second protective layer 22 is an acid-resistant and alkali-resistant material.

The second protective layer 22 is similar to the first protective layer 21, and the description of the first protective layer 21 is as described above.

S5. Referring to FIG. 21, the design surface 1 on which the second protective layer 22 is formed is oxidized to be in a region of the exposed surface of the metal surface not covered by the second protective layer 22 (represented by A ₂ ') Forming an oxide film layer on the surface, and coloring and sealing the oxide film layer to dye the region A ₂ ' of the exposed surface of the metal surface not covered by the second protective layer 22 into a second color to form a second Color layer 2'.

For the specific operation method, refer to step S202 in the second embodiment.

S6. Removing the second protective layer 22, a structural diagram as shown in FIG. 22 is obtained.

S7. Repeating the above steps S4, S5, and S6 until a decorative effect having at least three colors is formed on the design surface 1.

Illustratively, referring to Fig. 23, a schematic structural view of forming a decorative effect having three colors on the design surface.

Specifically, after removing the second protective layer 22, the direct oxidation process design surface 1, then, the exposed metal surface area is referred to as 'region represented by A ₁ can be an exposed metal surface area' A ₁ is An oxide film layer is formed on the surface, and the oxide film layer is colored and sealed to dye the metal surface exposed area A ₁ ' to a third color to form a third color layer 3'.

The present invention provides a method for processing a terminal housing, wherein a first protective layer 21 is formed on a designated area A' of a design surface of the metal shell body, and an appearance surface on which the first protective layer 21 is formed is oxidized. An oxide film layer is formed on a surface of the surface B' of the design surface that is not covered by the first protective layer 21, and the oxide film layer is colored and sealed to have no first protective layer on the design surface 1. The covered area B' is dyed into a first color to form a first color layer 1', and the first protective layer 21 is removed, so that the metal on the surface of the designated area A' is exposed to form a exposed surface of the metal surface, at which time The designated area A ₁ ' of the exposed portion of the metal surface forms the second protective layer 22, and the surface of the surface on which the second protective layer 22 is formed is oxidized so as not to be covered by the second protective layer 22 in the exposed area of the metal surface The surface of the region A ₂ ' forms an oxide film layer, and the oxide film layer is colored and sealed to be dyed to a second color in the region A ₂ ' of the exposed portion of the metal surface not covered by the second protective layer 22 And forming a second color layer 2', then Removing the second protective layer 22 such that the metal on the surface of the designated area A ₁ ' is exposed to form a metal surface exposed area A ₁ ', and continues to form a protective layer in a designated area of the exposed surface A ₁ ' of the metal surface, and is oxidized. And the dyeing treatment until the appearance of the decorative appearance with different colors is formed on the same design surface, so that the contours formed by the respective color layers can be clear and distinct, thereby making the appearance surface more beautiful and tidy.

The present application provides a terminal housing obtained by processing according to the processing methods provided in Embodiment 1, Embodiment 2, Embodiment 3 or Embodiment 3.

The present application provides a terminal housing. When the terminal housing is processed by the processing method provided in the first embodiment, a protective layer is formed on the design surface of the terminal housing, and the terminal is formed with a protective layer. The shell is processed to form a hollow structure, and the plastic is injected into the hollow structure by a nano-injection process, and the protective layer can cover a portion outside the region where the hollow structure is formed on the design surface, so that the shell can be low The glue is removed efficiently and efficiently, and the appearance of the terminal housing obtained is more beautiful and tidy. When the terminal housing is obtained by the processing method as provided in the second embodiment or the third embodiment, the protective layer is formed on a predetermined area of the design surface of the terminal housing, and the terminal housing is formed with the protective layer. By performing an oxidation treatment, a porous structure can be formed on the surface of the surface of the design surface not covered by the protective layer, and dyed so that the surface of the surface of the design surface not covered by the protective layer has a strong absorbing power to the dye. The surface of the predetermined area is covered by the protective layer, so that the decorative effect with different colors can be formed on the same surface, so that the appearance surface is more beautiful and neat. When the terminal housing is obtained by the processing method as provided in the fourth embodiment, the first protective layer is formed on a designated area of the design surface of the terminal housing, and the terminal housing formed with the first protective layer is further processed. An oxidation treatment capable of forming a porous structure on a surface of the surface of the design surface not covered by the first protective layer, and dyeing the surface of the surface of the design surface not covered by the first protective layer to form a first color a layer, and the designated area of the design surface is covered by the first protective layer, so that after the first protective layer is removed, the second protective layer can be continuously formed in a designated area of the metal exposed area, and according to the above steps The surface of the exposed portion of the metal exposed area that is not covered by the second protective layer forms a second color layer, so that the above steps are continuously repeated, and an appearance decorative effect having a different color can be formed on the same surface, so that the appearance surface is more beautiful and tidy.

The application provides a terminal device including a terminal housing as provided above.

The type of the terminal device is not limited.

Illustratively, the terminal device can be a mobile phone, a tablet, a digital camera or a netbook.

Finally, it should be noted that the above description is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be covered in the present application. Within the scope of protection of the application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A method for processing a terminal housing, comprising:

Forming a protective layer on the appearance surface of the metal shell body, the material of the protective layer being an acid and alkali resistant material;

Processing the metal shell body formed with the protective layer to form a hollow structure;

Forming a plastic layer in the hollow structure by using a nano-injection process;

Grinding the overflow of the plastic layer to remove the overflow glue;

The protective layer is removed.
The processing method according to claim 1, wherein the material of the protective layer comprises at least one of paint and ink.
The processing method according to claim 1, wherein the removing the protective layer comprises:

The protective layer is removed by a sanding polishing process, or the protective layer is dissolved and removed with a solvent.
The processing method according to claim 1, wherein the forming a plastic layer in the hollow structure by using a nano-injection process comprises:

Performing a nanopore treatment on the appearance surface of the metal shell body, and forming an adhesive layer on the inner surface of the hollow structure; the material of the adhesive layer includes a binder;

Plastic is injected into the hollow structure to form a plastic layer.
The processing method according to claim 1, wherein after the removing the protective layer, the processing method further comprises:

The surface of the design is surface treated.
The processing method according to claim 5, wherein the surface treatment of the appearance surface comprises:

The design surface is sandblasted and anodized.
The processing method according to any one of claims 1 to 6, wherein the hollow structure comprises at least one of an antenna cut-off groove, a headphone hole, a USB hole, and a speaker hole.
A method for processing a terminal housing, comprising:

Forming a protective layer on a predetermined area of the appearance surface of the metal shell body, the protective layer being an acid and alkali resistant material;

Oxidizing the design surface on which the protective layer is formed to form an oxide film layer on a surface of the surface of the design surface not covered by the protective layer, and coloring and sealing the oxide film layer, Dyeing a region of the design surface that is not covered by the protective layer into a first color to form a first color layer;

The protective layer is removed.
The processing method according to claim 8, wherein the material of the protective layer is at least one of an ink and a paint.
The processing method according to claim 8, wherein the removing the protective layer comprises:

The protective layer is removed by a sanding polishing process, or the protective layer is dissolved and removed with a solvent.
The processing method according to claim 8, wherein after the removing the protective layer, the processing method further comprises:

And oxidizing the design surface on which the first color layer is formed to form an oxide film layer on a surface of the surface of the design surface not covered by the first color layer, and coloring the oxide film layer and A sealing process is performed to dye a region of the design surface that is not covered by the first color layer into a second color to form a second color layer.
A terminal housing obtained by processing according to any one of claims 1 to 7 or 8 to 11.
A terminal device comprising the terminal housing of claim 12.
The terminal device according to claim 13, wherein the terminal device is a mobile phone, a tablet computer, a digital camera or a netbook.