CN102383161A - Pattern Processing Method for Three-dimensional Surface of Workpiece - Google Patents

Abstract

A method of patterning a surface of a workpiece, comprising: carrying out first anodic treatment on a workpiece, wherein the surface of the workpiece consists of at least one plane and at least one cambered surface; providing a pattern membrane, wherein the pattern membrane comprises a release material and an acid and alkali resistant ink layer arranged on the release material, and one surface of the release material, which is provided with the acid and alkali resistant ink layer, faces to a workpiece; applying a force to the edge of the pattern film to attach the pattern film to the surface of the workpiece, so that the acid and alkali resistant ink layer pattern is transferred to the surface of the workpiece; removing the parting material; etching the workpiece, and removing the acid and alkali resistant ink layer; and carrying out secondary anodic treatment to form bicolor anode three-dimensional lines on the surface of the workpiece.

Description

Pattern Processing Method for Three-dimensional Surface of Workpiece

technical field

The invention relates to a method for treating the surface of a workpiece, and in particular to a method for patterning the three-dimensional surface of the workpiece.

Background technique

Aluminum, titanium and their alloys have the advantages of high strength and light weight, so they are widely used in aviation, electronics, communication and other fields. Taking the casing of a notebook computer or a mobile phone as an example, in order to enhance the aesthetics and visual effects of the product, anodic treatment or painting can be used to increase the variety of patterns on the casing.

However, in the known anodic treatment process, although the color of the surface oxide layer can be controlled by the voltage change between the two poles, the thickness of the oxide film is uniform, and there is no concave or convex three-dimensional effect. In addition, although there has been developed a method that can use multiple anodic treatments and multiple colorings to obtain oxide films of different colors, this method can only be carried out on the same plane, so when treating the curved surface in the same way, There will be a problem that the color pattern and the three-dimensional effect cannot be continuous.

Contents of the invention

The invention provides a pattern processing method for a three-dimensional surface of a workpiece, which can solve the problem of inaccurate connection of line segments of the three-dimensional surface pattern of the workpiece.

The invention proposes a pattern processing method for the surface of a workpiece, which at least includes the following steps: performing anodic treatment on the workpiece for the first time, wherein the surface of the workpiece is composed of at least one plane and at least one arc surface; providing a pattern film, the pattern film It includes a release profile and an acid and alkali resistant ink layer arranged on the release profile, wherein the side of the release profile with the acid and alkali resistant ink layer faces the workpiece; exerts a force on the edge of the pattern film to attach the pattern film to the surface of the workpiece, so that the pattern of the anti-acid and alkali ink layer is transferred to the surface of the workpiece; remove the release material; etch the workpiece, and remove the anti-acid and alkali ink layer; and perform a second anodic treatment, so that the surface of the workpiece is formed A two-color anodized three-dimensional pattern.

In an embodiment of the method for patterning the workpiece surface of the present invention, the above-mentioned first anodizing treatment is hard anodizing (Hard anodizing) treatment.

In an embodiment of the method for patterning the workpiece surface of the present invention, the thickness of a first anodic layer formed by the first anodic treatment is greater than the thickness of a second anodic layer formed by the second anodic treatment.

In one embodiment of the method for patterning the workpiece surface of the present invention, the acid and alkali resistance of the first anode layer formed by the first anodic treatment is higher than that of the second anode formed by the second anodic treatment The acid and alkali resistance of the layer.

In one embodiment of the method for patterning the surface of a workpiece according to the present invention, the friction resistance of a first anode layer formed by the first anodic treatment is greater than that of a second anodic layer formed by the second anodic treatment Friction resistance.

In an embodiment of the method for patterning the workpiece surface of the present invention, before the above-mentioned step of attaching the patterned film to the workpiece, the patterned film is first heated so that the patterned film is heated and softened.

In one embodiment of the pattern processing method on the workpiece surface of the present invention, the patterned film is attached to the surface of the workpiece in a vacuum suction mode, wherein when the workpiece and the patterned film are vacuumed, the edge of the patterned film It is further attached to a fixture located under the workpiece.

In an embodiment of the method for patterning the workpiece surface of the present invention, the width of the two-color anode lines on the arc surface is slightly larger than the width of the two-color anode lines on the plane.

In an embodiment of the method for processing a workpiece surface pattern according to the present invention, the pattern film has at least one gap corresponding to the arc surface of the workpiece.

Based on the above, the pattern processing method of the workpiece surface of the present invention can improve the problem that the line segment of the surface pattern of the workpiece will be inaccurate or ink seepage at the junction of the plane and the arc surface, so that the pattern on the surface of the finished workpiece has a continuous three-dimensional effect and clear outlines.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a flowchart of a method for processing a three-dimensional surface pattern of a workpiece according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a workpiece that has been anodized for the first time.

FIG. 3 is a schematic diagram of disposing a pattern membrane.

Fig. 4 is a schematic diagram of attaching the pattern film to the workpiece.

Figure 5 is a schematic diagram after removing the release profile

Fig. 6 is a schematic diagram of etching a workpiece and removing the acid and alkali resistant ink layer.

FIG. 7 is a schematic perspective view of the workpiece in FIG. 6 after being etched and the acid and alkali resistant ink layer is removed.

Fig. 8 is a schematic cross-sectional view of the second anodic treatment on the workpiece.

Fig. 9 is a schematic perspective view of the second anodic treatment on the workpiece.

Symbol Description

100 Workpiece 110 Plane

120 Arc Surface 200 Pattern Diaphragm

210 Release profile 220 Anti-acid and alkali ink layer

300 Fixtures 400 Pattern Diaphragm

410 Notch 420 Joint

430 Joining part C Recessed part

F Force Force H Heating Lamp

L1 first anode layer L2 second anode layer

S space

Detailed ways

Please refer to FIG. 1 , which is a flowchart of a method for processing a three-dimensional surface pattern of a workpiece according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 2 at the same time. In step S110, a first anodic treatment is performed on a workpiece 100. It can be seen from the figure that the surface of the workpiece 100 is a three-dimensional surface, which is composed of at least one plane 110 and an arc surface 120. . In this embodiment, the first anodic treatment is hard anodic treatment, and a first anode layer L1 is formed on the surface of the workpiece 100, and the thickness of the first anode layer L1 is about 30 micrometers (m).

Next, please refer to Fig. 1 and Fig. 3 at the same time, as step S120, provide a pattern film 200, this pattern film 200 comprises a release profile 210 and an acid and alkali resistant ink layer 220 disposed on the release profile 210, wherein the release Profile 210 is a flexible substrate. In this embodiment, the periphery of the patterned film 200 is clamped by a clamping device (not shown in the figure), and the side configured with the anti-acid and alkali ink layer 220 is set facing the workpiece 100 .

As shown in FIGS. 1 and 4, in step S130, a force F is applied to the edge of the patterned film 200 to attach the patterned film 200 to the workpiece 100.

In this embodiment, the workpiece 100 that has undergone the first anodic treatment is placed on a jig 300, and the space between the workpiece 100 and the pattern film 200 is continuously vacuumed through a vacuum suction device (not shown in the figure). Air pumping, when the patterned film 200 is attached to the plane 110 of the workpiece 100, because the vacuum pumping device continues to pump air, the force F is provided to the periphery of the patterned film 200, so that the patterned film 200 is attached to the surface of the workpiece 100. On the first anode layer L1 at the arc surface 120 of the workpiece 100 . However, before the patterned film 200 is vacuum-attached to the workpiece 100, a heating lamp (not shown) may be used to heat the patterned film 200 first, so that the patterned film 200 is softened and more permeable to vacuum. Attached to the surface of the workpiece 100 by adsorption.

Incidentally, the area of the patterned film 200 can be larger than the surface area of the workpiece 100, so the peripheral edge of the patterned film 200 can be more attached to the jig 300 located under the workpiece 100, increasing the adhesion between the patterned film 200 and the workpiece 100 closeness.

In addition, the pattern film 200 may also have at least one notch (not shown in the figure), and the position of the notch is set to match the arc surface 120 of the workpiece 100 . When the patterned film 200 is attached to the workpiece 100, the joints of the patterned film 200 on both sides of the notch are joined to each other and present a continuous pattern, so that the patterned film 200 can more closely adhere to the curved surface 120 following the contour of the workpiece 100 superior.

At this time, the acid and alkali resistant ink layer 220 is transferred to the surface of the workpiece 100 . Depending on the material of the acid and alkali resistant ink layer 220 , the method of applying a heated air flow, an external pressure or an ultraviolet light to the pattern film 200 is used to transfer the acid and alkali resistant ink layer 220 to the surface of the workpiece 100 .

Please refer to FIG. 1 and FIG. 5 at the same time. In step S140 , the release material 210 is removed, and the anti-acid and alkali ink layer 220 remains on the surface of the workpiece 100 . .

Please refer to FIG. 1, FIG. 6 and FIG. 7 at the same time, as in step S150, the workpiece 100 is etched, and the acid and alkali resistant ink layer 220 is removed. In this embodiment, the first anode layer L1 that is not covered by the acid and alkali resistant ink layer 220 is etched, and the etched first anode layer L1 forms a plurality of depressions C, and the surface of the workpiece 100 can be exposed through each depression C. . Afterwards, the acid and alkali resistant ink layer 220 is removed to proceed to step S150.

Finally, please continue to refer to FIG. 1 , FIG. 8 and FIG. 9 , as in step S160 , a second anodic treatment is performed so that a two-color anode three-dimensional texture is formed on the surface of the workpiece 100 .

During the second anodic treatment, the second anode layer L2 is formed in the recessed portion C of the first anode layer L1. Comparing the first anode layer L1 with the second anode layer L2, the thickness of the first anode layer L1 is thicker (the first anode layer L1 is about 30 microns, and the second anode layer L2 is about 3 microns), and the second anode layer The color of the layer L2 is also suggested to be lighter than that of the first anode layer L1.

Since the first anode layer L1 is treated with hard anodization, it has the advantages of longer life, higher hardness, better friction resistance and corrosion resistance. That is, the acid and alkali resistance of the first anode layer L1 is higher than that of the second anode layer L2 , and the friction resistance of the first anode layer L1 is greater than that of the second anode layer L2 . Therefore, the formed first anode layer L1 can go deep into the pores of the workpiece 100 surface to improve the bonding effect with the workpiece 100. Afterwards, when performing the second anodic treatment, the second anode layer L2 can only be formed on the surface formed by the first anode. The surface of the workpiece 100 exposed by the recessed portion C of the layer L1 is less likely to cover the unetched portion of the first anode layer L1 .

To sum up, the workpiece processed by the pattern processing method of the three-dimensional surface of the workpiece according to the present invention, from at least the above-mentioned steps, uses vacuum pumping to make the pattern film continuously attached to the surface of the workpiece, even if the surface of the workpiece It is a flat, curved surface or other shapes that are connected to each other but linearly discontinuous, and the continuous pattern of the anti-acid and alkali ink layer can still be completely transferred to the first anode layer made on the flat surface and the curved surface connected to the flat surface superior. Compared with the conventional method, the continuity of the pattern on the surface of the workpiece is improved. Furthermore, anode layers with different thicknesses can be formed by multiple times of anodizing, so that the pattern has a concave and convex three-dimensional effect and a clear outline. In other words, the workpiece processed by the pattern processing method for the three-dimensional surface of the workpiece of the present invention has the advantages of clear outline and continuous three-dimensional effect. The curved surface has defects such as inability to connect patterns or discontinuous three-dimensional effect.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall prevail according to the contents defined in the claims.

Claims (10)

1. the pattern treatment process of a workpiece surface is characterized in that, comprising:

This workpiece is carried out the anodizing first time, and wherein this workpiece surface is made up of at least one plane and at least one cambered surface;

One patterns membrane is provided, and this patterns membrane comprises a release material and is disposed at the antiacid alkali ink lay on this release material, wherein this release material dispose this antiacid alkali ink lay one side towards this workpiece;

Bestow a reactive force in this patterns membrane edge this patterns membrane is pasted to this surface of this workpiece, make on this surface of pattern transfer to this workpiece of this antiacid alkali ink lay;

Remove this release material;

This workpiece of etching, and remove this antiacid alkali ink lay; And

Carry out the anodizing second time, make this workpiece surface form a double-colored anode solid grain.

2. the pattern treatment process of workpiece surface according to claim 1 is characterized in that, this, anodizing was hard anodizing first time.

3. the pattern treatment process of workpiece surface according to claim 1 is characterized in that, the thickness of the formed first anode layer of this anodizing first time is greater than the thickness of the formed second anode layer of this anodizing second time.

4. the pattern treatment process of workpiece surface according to claim 1 is characterized in that, the anti acid alkali performance of the formed first anode layer of this anodizing first time is higher than the anti acid alkali performance of the formed second anode layer of this anodizing second time.

5. the pattern treatment process of workpiece surface according to claim 1 is characterized in that, the rub resistance of the formed first anode layer of this anodizing first time is greater than the rub resistance of the formed second anode layer of this anodizing second time.

6. the pattern treatment process of workpiece surface according to claim 1 is characterized in that, before this patterns membrane is pasted to the step of this workpiece, earlier this patterns membrane is heated, and makes this patterns membrane receive thermal softening.

7. the pattern treatment process of workpiece surface according to claim 1 is characterized in that, this patterns membrane is attached at this surface of this workpiece with the mode of a vacuum suck.

8. the pattern treatment process of workpiece surface according to claim 7 is characterized in that, when this workpiece and this patterns membrane were carried out vacuum suck, the edge of this patterns membrane more was attached at a tool that is positioned under this workpiece.

9. the pattern treatment process of workpiece surface according to claim 1 is characterized in that, the width that is positioned at this double-colored anode lines of this cambered surface is slightly larger than the width that is positioned at this double-colored anode lines of this planar.

10. the pattern treatment process of workpiece surface according to claim 1 is characterized in that, this patterns membrane is to having at least one breach in workpiece cambered surface place.

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