Workpiece laser engraving method, laser engraving controller, laser engraving device and workpiece

Abstract

The embodiment of the application discloses a workpiece laser engraving method, a laser engraving controller, a laser engraving device and a workpiece. The workpiece laser engraving method comprises the following steps: drawing an edge of a laser engraving graph according to a vertical projection profile of a workpiece surface to be laser engraved, the laser engraving graph comprising a first laser engraving area corresponding to a first thickness area on the workpiece surface to be laser engraved and a second laser engraving area corresponding to a second thickness area on the workpiece surface to be laser engraved; filling a first gray scale in the first laser engraving area according to the thickness of the first thickness area; and filling a second gray scale in the second laser engraving area according to the thickness of the second thickness area. The laser engraving power of a corresponding position on the workpiece surface to be laser engraved is determined according to the gray scale of a corresponding position of the laser engraving graph, and laser engraving is performed. The laser engraving power is adjusted according to the different color haze severity of different positions on the workpiece. The color haze of different positions on the workpiece is corrected in a targeted manner, and the color of all positions on the workpiece is unified, or the color difference of different positions on the workpiece is reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to laser engraving technology, and in particular to a workpiece laser engraving method, a laser engraving controller, a laser engraving device, and a workpiece. Background Art

[0002] With the continuous development of terminal technology, the use of electronic devices has become an important part of people's work and life. The color of electronic device casings has also become an important factor in consumer product selection. Products with bright colors (such as blue, purple, or pink) will also cause varying degrees of discoloration and fogging on the plastic during the anodizing process. To solve this problem, laser engraving can be used to enhance the color of the workpiece.

[0003] In existing technology, when creating laser engraving patterns, a fill function is often used to fill the entire workpiece drawing with grayscale. The equipment then laser engraves the workpiece surface at a constant power based on the grayscale of the laser engraving pattern. This fixes the problem of disparate colors and fogging on the workpiece's surface. However, this method can only repair surface fogging caused by other processes on black and white plastics. With the addition of bright colors such as blue, purple, and pink, the degree of disparate color fogging varies depending on the thickness of the plastic in different areas, influenced by product structure. Traditional laser engraving processes cannot solve the problem of disparate colors on brightly colored workpieces, and the problem of disparate colors in different thickness areas after laser engraving still exists. Summary of the Invention

[0004] The present invention provides a workpiece laser engraving method, a laser engraving controller, a laser engraving device and a workpiece, so as to eliminate or alleviate the problem of different colors in areas of different thicknesses of a plastic workpiece and improve the color consistency of different areas of the workpiece.

[0005] In a first aspect, an embodiment of the present invention provides a method for laser engraving a workpiece, comprising:

[0006] Draw the edge of a laser engraving pattern according to the vertical projection outline of the workpiece surface to be laser engraved, wherein the laser engraving pattern includes a first laser engraving area corresponding to a first thickness area on the workpiece surface to be laser engraved, and a second laser engraving area corresponding to a second thickness area on the workpiece surface to be laser engraved;

[0007] Filling the first laser engraved area with a first grayscale according to the thickness of the first thickness area; filling the second laser engraved area with a second grayscale according to the thickness of the second thickness area;

[0008] According to the positional correspondence between the workpiece surface to be laser engraved and the laser engraving pattern, the laser engraving power at the corresponding position of the workpiece surface to be laser engraved is determined by the grayscale of the corresponding position of the laser engraving pattern, and laser engraving is performed.

[0009] Optionally, also include:

[0010] The laser engraving pattern further includes a third laser engraving area corresponding to a third thickness area on the surface of the workpiece to be laser engraved, and a third grayscale is filled in the third laser engraving area according to the thickness of the third thickness area.

[0011] Optionally, the thickness of the first thickness region is smaller than the thickness of the second thickness region, and the grayscale value of the first grayscale is smaller than the grayscale value of the second grayscale.

[0012] Optionally, determining the laser engraving power at a position corresponding to the workpiece surface to be laser engraved by using the grayscale of a corresponding position of the laser engraving image includes: the larger the grayscale value of the corresponding position of the laser engraving image, the greater the laser engraving power at the corresponding position of the workpiece surface to be laser engraved.

[0013] In a second aspect, an embodiment of the present invention further provides a workpiece laser engraving controller, comprising:

[0014] a laser engraving pattern edge drawing module, which draws the edge of the laser engraving pattern according to the vertical projection contour of the workpiece surface to be laser engraved, wherein the laser engraving pattern includes a first laser engraving area corresponding to a first thickness area on the workpiece surface to be laser engraved, and a second laser engraving area corresponding to a second thickness area on the workpiece surface to be laser engraved;

[0015] A grayscale filling module is configured to fill the first laser engraved area with a first grayscale according to the thickness of the first thickness area; and to fill the second laser engraved area with a second grayscale according to the thickness of the second thickness area;

[0016] The laser engraving power determination module determines the laser engraving power at the corresponding position of the workpiece surface to be laser engraved according to the position correspondence between the workpiece surface to be laser engraved and the laser engraving pattern and the grayscale of the corresponding position of the laser engraving pattern, and performs laser engraving.

[0017] Optionally, in the laser engraving pattern edge drawing module, the laser engraving pattern further includes a third laser engraving area corresponding to a third thickness area on the surface of the workpiece to be laser engraved;

[0018] The grayscale filling module is further configured to fill the third laser engraving area with a third grayscale according to the thickness of the third thickness area.

[0019] Optionally, the thickness of the first thickness region is smaller than the thickness of the second thickness region, and the grayscale value of the first grayscale is smaller than the grayscale value of the second grayscale.

[0020] Optionally, determining the laser engraving power at a position corresponding to the workpiece surface to be laser engraved by using the grayscale of a corresponding position of the laser engraving image includes: the larger the grayscale value of the corresponding position of the laser engraving image, the greater the laser engraving power at the corresponding position of the workpiece surface to be laser engraved.

[0021] In a third aspect, an embodiment of the present invention further provides a workpiece laser engraving device, comprising any one of the above-mentioned workpiece laser engraving controllers.

[0022] In a fourth aspect, an embodiment of the present invention further provides a workpiece, which can be used to eliminate discoloration by using any of the above-mentioned workpiece laser engraving methods.

[0023] In an embodiment of the present invention, a method for laser engraving a workpiece includes drawing the edge of a laser engraving pattern based on a vertical projection profile of the workpiece surface to be laser engraved. The laser engraving pattern includes a first laser engraving area corresponding to a first thickness region on the workpiece surface to be laser engraved, and a second laser engraving area corresponding to a second thickness region on the workpiece surface to be laser engraved. The first laser engraving area is filled with a first grayscale based on the thickness of the first thickness region, and the second laser engraving area is filled with a second grayscale based on the thickness of the second thickness region. Based on the positional correspondence between the workpiece surface to be laser engraved and the laser engraving pattern, the laser engraving power at the corresponding position on the workpiece surface to be laser engraved is determined using the grayscale at the corresponding position on the laser engraving pattern, and laser engraving is performed. The laser engraving pattern is divided into laser engraving areas corresponding to different thickness regions of the workpiece, and the grayscale of the laser engraving areas is then filled based on the thickness of the corresponding position on the workpiece. The power for laser engraving at each position on the workpiece is determined based on the grayscale in the laser engraving pattern. This allows the laser engraving power to be adjusted based on the severity of color fogging at different positions on the workpiece. This allows for targeted correction of color fogging at different positions on the workpiece, achieving uniform color across all positions on the workpiece, or reducing color differences at different positions on the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A diagram showing the steps of a workpiece laser engraving method provided by an embodiment of the present invention;

[0025] Figure 2 This is a structural diagram of a workpiece laser engraving controller provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0027] Figure 1 A method step diagram of a workpiece laser engraving method provided by an embodiment of the present invention, see Figure 1 An embodiment of the present invention provides a method for laser engraving a workpiece, comprising:

[0028] S1: Draw the edge of a laser engraving pattern according to the vertical projection outline of the workpiece surface to be laser engraved, wherein the laser engraving pattern includes a first laser engraving area corresponding to a first thickness area on the workpiece surface to be laser engraved, and a second laser engraving area corresponding to a second thickness area on the workpiece surface to be laser engraved.

[0029] The edge of the laser engraving pattern can be directly drawn or obtained by importing an existing laser engraving pattern. The laser engraving pattern corresponds to the surface of the workpiece to be laser engraved, and the outline and shape of the laser engraving pattern reflect the outline and shape of the surface of the workpiece to be laser engraved. During laser engraving, the equipment laser engraves the surface of the workpiece according to the information recorded in the laser engraving pattern. The laser engraving pattern can be divided into zones according to the different thicknesses of the surface of the workpiece to be laser engraved. The first laser engraving area is defined as the portion of the laser engraving pattern corresponding to the first thickness area of ​​the surface of the workpiece to be laser engraved; the second laser engraving area is defined as the portion of the laser engraving pattern corresponding to the second thickness area of ​​the surface of the workpiece to be laser engraved.

[0030] S2: filling the first laser engraved area with a first grayscale according to the thickness of the first thickness area; and filling the second laser engraved area with a second grayscale according to the thickness of the second thickness area.

[0031] The grayscale needs to be filled in according to the thickness of the workpiece surface to be laser engraved. The relationship between the thickness of the workpiece surface to be laser engraved and the grayscale to be filled can be determined according to actual needs. For example, the thickness of the first thickness area is less than the thickness of the second thickness area, and the grayscale value of the first grayscale is less than the grayscale value of the second grayscale.

[0032] S3: According to the positional correspondence between the workpiece surface to be laser engraved and the laser engraving pattern, the laser engraving power at the corresponding position of the workpiece surface to be laser engraved is determined by the grayscale of the corresponding position of the laser engraving pattern, and laser engraving is performed.

[0033] The correspondence between the grayscale in the laser engraving image and the laser engraving power of the workpiece surface to be laser engraved can be determined based on actual needs. For example, the greater the grayscale value at the corresponding position on the laser engraving image, the greater the laser engraving power at the corresponding position on the workpiece surface to be laser engraved. For example, when the grayscale of a region on the laser engraving image is set to 228, the matching power is 80.4%; when the grayscale of a region on the laser engraving image is set to 181, the matching power is 63.9%.

[0034] The thinner plastic areas of the workpiece are lightened to correct the color difference. This achieves a uniform color across the entire workpiece or reduces color differences between different parts of the workpiece.

[0035] Optionally, also include:

[0036] The laser engraving pattern further includes a third laser engraving area corresponding to a third thickness area on the surface of the workpiece to be laser engraved. The third grayscale is filled in the third laser engraving area according to the thickness of the third thickness area.

[0037] Among them, when the workpiece surface to be laser engraved includes a third thickness, a third laser engraving area can be divided on the laser engraving map, and the corresponding grayscale is filled in the third laser engraving area according to the corresponding thickness on the workpiece surface to be laser engraved.

[0038] Figure 2 This is a schematic diagram of the structure of a workpiece laser engraving controller provided by an embodiment of the present invention, see Figure 2 The embodiment of the present invention further provides a workpiece laser engraving controller, which is characterized by comprising:

[0039] The laser engraving pattern edge drawing module 1 draws the edge of the laser engraving pattern according to the vertical projection contour of the workpiece surface to be laser engraved. The laser engraving pattern includes a first laser engraving area corresponding to a first thickness area on the workpiece surface to be laser engraved, and a second laser engraving area corresponding to a second thickness area on the workpiece surface to be laser engraved.

[0040] Grayscale filling module 2, filling the first laser engraved area with a first grayscale according to the thickness of the first thickness area; and filling the second laser engraved area with a second grayscale according to the thickness of the second thickness area;

[0041] The laser engraving power determination module 3 determines the laser engraving power at the corresponding position of the workpiece surface to be laser engraved according to the position correspondence between the workpiece surface to be laser engraved and the laser engraving pattern and the grayscale of the corresponding position of the laser engraving pattern, and performs laser engraving.

[0042] Optionally, in the laser engraving pattern edge drawing module 1, the laser engraving pattern further includes a third laser engraving area corresponding to a third thickness area on the surface of the workpiece to be laser engraved;

[0043] The grayscale filling module 2 is further configured to fill the third laser engraving area with a third grayscale according to the thickness of the third thickness area.

[0044] Optionally, the thickness of the first thickness region is smaller than the thickness of the second thickness region, and the grayscale value of the first grayscale is smaller than the grayscale value of the second grayscale.

[0045] Optionally, determining the laser engraving power at a position corresponding to the workpiece surface to be laser engraved by using the grayscale of a corresponding position of the laser engraving image includes: the greater the grayscale value of the corresponding position of the laser engraving image, the greater the laser engraving power at the corresponding position of the workpiece surface to be laser engraved.

[0046] In this embodiment of the present invention, the laser engraving image is divided into laser engraving areas corresponding to different thicknesses of the workpiece. The grayscale of the laser engraving area is then filled according to the thickness of the corresponding position on the workpiece. The power for laser engraving at each position on the workpiece is determined based on the grayscale in the laser engraving image. This allows the laser engraving power to be adjusted according to the severity of color fogging at different positions on the workpiece. This allows for targeted correction of different color fogging at different positions on the workpiece, achieving uniform color across all positions on the workpiece, or reducing color differences at different positions on the workpiece.

[0047] An embodiment of the present invention further provides a workpiece laser engraving device, comprising any one of the above-mentioned workpiece laser engraving controllers.

[0048] Among them, since the workpiece laser engraving device in the embodiment of the present invention uses any one of the above-mentioned workpiece laser engraving controllers, it has the beneficial effects corresponding to the workpiece laser engraving controller.

[0049] An embodiment of the present invention further provides a workpiece, which can be used to eliminate discoloration by using any of the above-mentioned workpiece laser engraving methods.

[0050] Among them, since the workpiece in the embodiment of the present invention is manufactured and processed by any of the above-mentioned workpiece laser engraving methods, it has corresponding beneficial effects.

[0051] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for laser engraving a workpiece, characterized in that: include: The edge of the laser engraving pattern is drawn according to the vertical projection outline of the workpiece surface to be laser engraved, and the laser engraving pattern is divided into zones according to the different thicknesses of the workpiece surface to be laser engraved; the laser engraving pattern includes a first laser engraving area corresponding to a first thickness area on the workpiece surface to be laser engraved, and a second laser engraving area corresponding to a second thickness area on the workpiece surface to be laser engraved; wherein the workpiece is a plastic workpiece; Filling the first laser engraved area with a first grayscale according to the thickness of the first thickness area; and filling the second laser engraved area with a second grayscale according to the thickness of the second thickness area; wherein the thickness of the first thickness area is smaller than the thickness of the second thickness area, and the grayscale value of the first grayscale is smaller than the grayscale value of the second grayscale; According to the positional correspondence between the workpiece surface to be laser engraved and the laser engraving pattern, the laser engraving power at the corresponding position of the workpiece surface to be laser engraved is determined by the grayscale of the corresponding position of the laser engraving pattern, and laser engraving is performed to eliminate or reduce the problem of different colors in different thickness areas of the plastic workpiece and improve the color consistency of different areas of the workpiece; Determining the laser engraving power at a position corresponding to the workpiece surface to be laser engraved by using the grayscale of the corresponding position of the laser engraving pattern includes: the greater the grayscale value of the corresponding position of the laser engraving pattern, the greater the laser engraving power at the corresponding position of the workpiece surface to be laser engraved.

2. The workpiece laser engraving method according to claim 1, characterized in that: Also includes: The laser engraving pattern further includes a third laser engraving area corresponding to a third thickness area on the surface of the workpiece to be laser engraved, and a third grayscale is filled in the third laser engraving area according to the thickness of the third thickness area.

3. A workpiece laser engraving controller, characterized in that: include: a laser engraving pattern edge drawing module, which draws the edge of the laser engraving pattern based on the vertical projection outline of the workpiece surface to be laser engraved, and divides the laser engraving pattern into zones according to the different thicknesses of the workpiece surface to be laser engraved; the laser engraving pattern includes a first laser engraving area corresponding to a first thickness area on the workpiece surface to be laser engraved, and a second laser engraving area corresponding to a second thickness area on the workpiece surface to be laser engraved; wherein the workpiece is a plastic workpiece; a grayscale filling module, which fills the first laser engraved area with a first grayscale according to the thickness of the first thickness area; and fills the second laser engraved area with a second grayscale according to the thickness of the second thickness area; wherein the thickness of the first thickness area is less than the thickness of the second thickness area, and the grayscale value of the first grayscale is less than the grayscale value of the second grayscale; The laser engraving power determination module determines the laser engraving power at the corresponding position of the workpiece surface to be laser engraved based on the positional correspondence between the workpiece surface to be laser engraved and the laser engraving pattern, and uses the grayscale of the corresponding position of the laser engraving pattern to perform laser engraving, thereby eliminating or reducing the problem of different colors in different thickness areas of the plastic workpiece and improving the color consistency of different areas of the workpiece; Determining the laser engraving power at a position corresponding to the workpiece surface to be laser engraved by using the grayscale of the corresponding position of the laser engraving pattern includes: the greater the grayscale value of the corresponding position of the laser engraving pattern, the greater the laser engraving power at the corresponding position of the workpiece surface to be laser engraved.

4. The workpiece laser engraving controller according to claim 3, characterized in that: In the laser engraving pattern edge drawing module, the laser engraving pattern further includes a third laser engraving area corresponding to a third thickness area on the surface of the workpiece to be laser engraved; The grayscale filling module is further configured to fill the third laser engraving area with a third grayscale according to the thickness of the third thickness area.

5. A workpiece laser engraving device, characterized in that: The invention comprises the workpiece laser engraving controller described in any one of claims 3-4.

6. A workpiece, characterized in that The discoloration is eliminated by the workpiece laser engraving method described in any one of claims 1-2.

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