A method for removing multiple layers of material from the surface of glass products

Abstract

This invention discloses a method for removing multiple layers of material from the surface of glass products, comprising the following steps: obtaining a product to be processed, the product comprising a glass body and at least two stacked material layers on the surface of the glass body, the at least two material layers being of different materials; fixing the product to be processed on a processing fixture; positioning a laser emitter on the side of the glass body of the product to be processed away from the at least two material layers; setting the focal point of the laser emitted by the laser emitter on the side of the glass body close to the at least two material layers, and driving the laser emitter to emit laser to perform laser processing on the product to be processed, thereby removing the functional inorganic binder layer and ink layer on the surface of the glass body. This invention can improve processing efficiency and processing effect.

Description

Technical Field

[0001] This invention relates to the field of laser processing, and more specifically to a method for removing multiple layers of material from the surface of glass products. Background Technology

[0002] When removing multiple layers of glass from their surfaces, the traditional method involves directly applying a laser to the layers for removal. However, for functional inorganic binder layers, the laser removal process can lead to a chemical reaction between the inorganic binders in the functional inorganic binder layer and the outer layer material due to the laser thermal effect or laser plasma thermal ablation. This reaction may form a new binder, increasing the difficulty of removal. Summary of the Invention

[0003] The technical problem this invention aims to solve is that the inorganic binder in the functional inorganic binder layer reacts chemically with the outer material layer during laser lithography, forming a new binder that increases the difficulty of removal. To address the above-mentioned deficiencies of the prior art, this invention provides a method for removing multiple layers of material from the surface of glass products.

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows: a method for removing multiple layers of material from the surface of a glass product is provided, comprising the following steps: obtaining a product to be processed, the product to be processed comprising a glass body and at least two layers of material stacked on a surface of the glass body, the at least two layers of material being of different materials; fixing the product to be processed on a processing fixture; setting a laser emitter on the side of the glass body of the product to be processed away from the at least two layers of material; setting the focal point of the laser emitted by the laser emitter on the side of the glass body close to the at least two layers of material, and driving the laser emitter to emit laser to perform laser processing on the product to be processed, thereby removing the at least two layers of material from the surface of the glass body.

[0005] The at least two material layers include a functional inorganic binder layer disposed on the surface of the glass body and an ink layer disposed on a surface of the functional inorganic binder layer away from the glass body; the focal point is disposed on the side of the functional inorganic binder layer near the ink layer.

[0006] Prior to the step of driving the laser emitter to emit laser light, the method for removing multiple layers of material from the surface of the glass product further includes the following steps: setting a dust extraction device and a blowing device on the side of the at least two material layers away from the glass body; simultaneously with the step of driving the laser emitter to emit laser light, the method for removing multiple layers of material from the surface of the glass product further includes: driving the dust extraction device and the blowing device to perform dust extraction and blowing operations to remove oil fumes and dust from the surface of the glass body.

[0007] The dust extraction device and the blower are arranged relative to each other at a preset angle greater than 0.

[0008] The processing fixture includes at least one hollowed-out area; after the step of setting the laser emitter on the side of the glass body of the product to be processed away from the at least two material layers, the method for removing multiple material layers from the surface of the glass product further includes the following step: setting a protective fixture on the side of the processing fixture away from the product to be processed to prevent the laser emitted by the laser emitter from passing through the at least one hollowed-out area and causing damage.

[0009] The method for removing multiple layers of material from the surface of a glass product, prior to the step of setting the focal position of the laser emitted by the laser emitter on the side of the glass body close to the at least two material layers, further includes the following steps: obtaining a target processing pattern and constructing a target processing drawing based on the target processing image; the step of driving the laser emitter to emit a laser to perform laser processing on the product to be processed includes: driving the laser emitter to emit a laser and performing laser processing on the product to be processed based on the target processing drawing.

[0010] The step of constructing a target processing drawing based on the target processing image includes: constructing a material processing drawing for each material layer based on the layer characteristics of each material layer; the step of performing laser processing on the product to be processed based on the target processing drawing includes: performing laser processing on at least two material layers in order from farthest to near the glass body according to the material processing drawing of each material layer.

[0011] The method for removing multiple layers of material from the surface of a glass product after the step of driving the laser emitter to emit laser light further includes the following step: cleaning the laser-processed product to obtain the target product.

[0012] The step of obtaining the article to be processed includes: obtaining a target layer region, and sequentially coating at least two layers of the material layer in the target layer region on one side of the glass body to obtain the article to be processed.

[0013] The laser emitter is an ultraviolet picosecond laser.

[0014] Compared with the prior art, the beneficial effect of the method for removing multiple layers of material from the surface of glass products provided by the embodiments of the present invention is that by setting the laser focus on the side of the glass body close to at least two material layers, the laser passes through the glass body and shines on at least two material layers for laser processing, which can effectively reduce the absorption of laser by the glass, thereby reducing the possibility of glass damage. When the outermost material layer is laser-processed, the inner material layers are also laser-processed, improving processing efficiency. The inner material is preferentially cleaned during laser processing, which can effectively prevent the reaction between adjacent material layers to form new, difficult-to-treat compounds, further improving processing efficiency and processing effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] in:

[0017] Figure 1 This is a flowchart illustrating the method for removing multiple layers of material from the surface of glass products according to the first embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the article to be processed according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram illustrating an application scenario of a method for removing multiple layers of material from the surface of glass products according to an embodiment of the present invention.

[0020] Figure 4 This is a flowchart illustrating the method for removing multiple layers of material from the surface of glass products according to the second embodiment of the present invention. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1 , Figure 1This is a schematic flowchart of a method for removing multiple layers of material from the surface of a glass product according to the first embodiment of the present invention. The method for removing multiple layers of material from the surface of a glass product provided by the present invention includes the following steps:

[0023] S101: Obtain the article to be processed, which includes a glass body and at least two material layers stacked on a surface of the glass body, wherein the materials of the at least two material layers are different.

[0024] In a specific implementation scenario, please refer to the relevant documents. Figure 2 , Figure 2 This is a schematic diagram of the structure of the article to be processed according to an embodiment of the present invention. For example... Figure 2 As shown, the article to be processed 10 includes a glass body 11 and two material layers 12 and 13 disposed on the surface of the glass body. The materials of material layers 12 and 13 are different. For example, material layer 12 is a functional inorganic binder layer, and the materials include SiC, SiN, SiO2, etc. Material layer 12 can effectively improve the strength of the glass body 11. Material layer 13 is an ink layer, and the function of material layer 13 is to decorate the appearance of the glass body 11, and it can have different colors. In other implementation scenarios, the number of material layers can be 3, 4 or more, and the material and function of each material layer are not limited here. In this implementation scenario, at least two material layers are disposed on only one side of the glass body 11. In other implementation scenarios, at least two material layers can be disposed on both sides of the glass body.

[0025] S102: Fix the article to be processed onto the processing fixture, and place the laser emitter on the side of the glass body of the article to be processed away from at least two material layers.

[0026] In a specific implementation scenario, please refer to the relevant documents. Figure 3 , Figure 3 This is a schematic diagram illustrating an application scenario of a method for removing multiple layers of material from the surface of glass products according to an embodiment of the present invention. For example... Figure 3 As shown, the workpiece 10 to be processed is placed on the processing fixture 21, with the material layer 13 of the workpiece 10 facing the processing fixture 21. The laser emitter 22 is located on the side of the workpiece 10 away from the material layers 12 and 13. A limiting device, such as an L-shaped stop, can be provided on the processing fixture 21 to fix the position of the workpiece 10, thereby avoiding repeated adjustments to the laser emitter 22 during mass production and improving mass production efficiency.

[0027] Furthermore, the processing fixture 21 can be provided with multiple hollow holes. When the product to be processed 10 is placed on the processing fixture 21, the product to be processed 10 is vacuum adsorbed through the hollow holes, which can ensure that the position of the product to be processed 10 remains unchanged during laser processing and effectively improve the processing accuracy.

[0028] S103: The focal point of the laser emitted by the laser emitter is set on the side of the glass body close to at least two material layers, and the laser emitter is driven to emit laser to perform laser processing on the product to be processed, so as to remove at least two material layers on the surface of the glass body.

[0029] In a specific implementation scenario, the focal point of the laser emitted by the laser emitter 22 is set on the side of the glass body 11 of the product to be processed 10 close to the material layers 12 and 13. The laser emitter is driven to emit laser so that the laser can pass through the glass body 11 and hit the material layers 12 and 13 to remove the material layers 12 and 13 by laser.

[0030] During laser processing, because the laser's focal point is on the outer side of the glass body 11, the power density of the laser is relatively low when it passes through the glass body 11, resulting in less absorption of laser energy by the glass body 11 and reducing the possibility of damage to the glass body 11. Furthermore, during laser processing, the laser travels from material layer 12 towards material layer 13. This means that material layer 12 is being processed while material layer 13 is being removed. The laser reaches material layer 12 first, effectively preventing material layers 12 and 13 from bonding together to form new bonds during laser processing.

[0031] In this implementation scenario, material layer 13 can be removed first, followed by material layer 12. In other implementation scenarios, material layer 12 can be removed directly, so that material layer 13 will automatically detach because there is no connection between it and the glass body 11.

[0032] In one implementation scenario, material layer 12 is a functional inorganic binder layer, material layer 13 is an ink layer, and the focal point is located on the side of functional inorganic binder layer 12 close to ink layer 13. This allows the laser energy to be concentrated for removing ink layer 13 and functional inorganic binder layer 12, while effectively protecting the glass body 11.

[0033] As described above, in this embodiment, the laser emitter is positioned on the side of the glass body of the product to be processed away from at least two material layers, and the laser focus is positioned on the side of the glass body close to at least two material layers. The laser beam passes through the glass body and is directed towards the at least two material layers for laser processing. This effectively reduces the absorption of laser light by the glass, thereby reducing the possibility of glass damage. When the outermost material layer is laser-processed, the inner material layers are also laser-processed, improving processing efficiency. The inner material layers are preferentially processed during laser processing, which can effectively prevent the reaction between adjacent material layers to form new, difficult-to-process compounds, further improving processing efficiency and processing results.

[0034] Please see Figure 4 , Figure 4 This is a schematic flowchart of a method for removing multiple layers of material from the surface of a glass product according to a second embodiment of the present invention. The method for removing multiple layers of material from the surface of a glass product provided by the present invention includes the following steps:

[0035] S201: Obtain the target layer area, and sequentially coat at least two material layers in the target layer area on one side of the glass body to obtain the product to be processed.

[0036] In a specific implementation scenario, a target layer area is obtained. This target layer area is set by the user according to actual needs; in this scenario, the target layer area is the entire area of ​​the glass body. One side of the glass body is designated as the target side. After pretreatment such as cleaning, at least two material layers are sequentially coated onto the target layer area (the entire area) on the target side according to a preset sequence. For example, a functional inorganic binder layer is first coated onto the target side of the glass body, and then an ink layer is coated onto the surface of the functional inorganic binder layer to obtain the product to be processed.

[0037] In this implementation scenario, the thickness of the functional inorganic binder layer and the ink layer can be around 1-10 μm. The functional inorganic binder layer and the ink layer can correspond to different target layer regions. The target layer region corresponding to the ink layer is included in the target layer region corresponding to the functional inorganic binder layer.

[0038] S202: Fix the article to be processed onto the processing fixture, and place the laser emitter on the side of the glass body of the article to be processed away from at least two material layers.

[0039] In a specific implementation scenario, step S202 is basically the same as step S102 in the first embodiment of the method for removing multiple layers of material from the surface of glass products provided by the present invention, and will not be described again here.

[0040] S203: A dust extraction device and a blower are installed on the side of at least two material layers away from the glass body.

[0041] In a specific implementation scenario, please refer to [the relevant documentation]. Figure 3 .like Figure 3 As shown, a dust extraction device 24 and a blower 23 are provided on the side of material layer 13 away from the glass body. Because the temperature is high during laser processing, the oil fumes and dust generated after laser processing of material layers 12 and 13 will rise due to heat. These fumes and dust need to be extracted in time before they deposit on the surface of the glass body 11. In this embodiment, to effectively improve the working effect of the dust extraction device 24 and the blower 23, the dust extraction device 24 and the blower 23 are positioned relative to each other at a preset angle, with the blower 23 pointing horizontally downwards at 0-5 degrees towards the dust extraction device 24.

[0042] S204: A protective fixture is provided on the side of the treatment fixture away from the workpiece to prevent the laser emitted by the laser emitter from being reflected after passing through at least one hollowed-out area and causing damage.

[0043] In a specific implementation scenario, since the laser needs to pass through the glass body 11 to reach the two material layers 12 and 13, in order to improve the laser processing effect, a hollow area is set on the processing fixture 21 at the position matching the target laser area. The hollow area can be used to achieve vacuum adsorption of the product 10 to be processed, and can also transmit the laser to avoid reflection into the glass body 11 and causing damage to the glass body 11.

[0044] During laser processing, lasers may be emitted from the hollowed-out area, which may damage the equipment. Therefore, a protective fixture 25 is provided on the side of the processing fixture 21 away from the workpiece 10 to be processed. The protective fixture 25 has a hollowed-out groove of a certain depth, and the bottom of the hollowed-out area of ​​the protective fixture 25 is made of black or transparent material to absorb the emitted laser and protect the equipment.

[0045] S205: Obtain the target processing pattern and construct the target processing drawing file based on the target processing image.

[0046] In a specific implementation scenario, a target processing pattern is acquired. This target processing image can be designed by the user according to actual needs, such as a circle, square, or an irregular shape. A target processing drawing is constructed based on the target processing image. In this implementation scenario, the position data of the product to be processed is acquired using a CCD camera. Specifically, the peripheral contour position of the product to be processed is acquired using the CCD camera, and the center point position of the product to be processed is obtained based on the peripheral contour position. The target processing pattern is subjected to at least one of the following operations: rotation, reduction, or stretching, so that the adjusted target processing pattern matches the position data. The fill spacing is obtained based on the material of at least two material layers and the processing target. The target processing drawing is then obtained based on the fill spacing and the adjusted target processing pattern. For example, the fill spacing can be relatively large, such as 0.012 mm, when removing an ink layer, while a smaller fill spacing, such as 0.005 mm, is required when removing a functional inorganic binder layer.

[0047] S206: The focal point of the laser emitted by the laser emitter is set on the side of the glass body close to at least two material layers.

[0048] In a specific implementation scenario, step S203 is basically the same as step S103 in the first embodiment of the method for removing multiple layers of material from the surface of glass products provided by the present invention, and will not be described again here.

[0049] S207: Drives the laser emitter to emit laser light and performs laser processing on the product to be processed according to the target processing drawing.

[0050] In a specific implementation scenario, the operating parameters of the laser emitter are obtained based on the material layers 12 and 13 to be removed. The laser emitter 22 is then driven to emit laser light according to these parameters, performing laser processing on the workpiece 10 according to the target processing drawing. The operating parameters include: marking speed, air conditioning speed, frequency, power, fill spacing, and focal position. In this implementation scenario, the value range of the operating parameters is as follows:

[0051] As shown in Table 1.

[0052]

[0053] Table 1

[0054] In other implementation scenarios, the working parameters can also be other value ranges, set according to actual needs.

[0055] In one implementation scenario, material layers 12 and 13 are laser-cleaned sequentially from farthest from the glass body 11. When acquiring the target processing drawings, since the materials of material layers 12 and 13 are different, the required working parameters and processing drawings for cleaning also differ. Therefore, based on the material characteristics and processing objectives (e.g., complete cleaning or partial cleaning) of each material layer, a material processing drawing is constructed for each material layer. First, material 13 is laser-cleaned using working parameters matching those of material layer 13, based on its material processing drawing. Then, material 12 is laser-cleaned using working parameters matching those of material layer 12, based on its material processing drawing.

[0056] In other implementation scenarios, the material layer 12, which is closest to the glass body 11, is laser-removed, causing the material layer 13 to detach because it has no bonding layer with the glass body 11. The material layer 12 is laser-processed according to the material processing drawing of 12 using working parameters matching that of 12, in order to remove the material layer 12.

[0057] S208: Drive the dust extraction device and the blowing device to perform dust extraction and blowing operations to remove oil fumes and dust from the surface of the glass body.

[0058] In a specific implementation scenario, driving the dust extraction and blowing devices to perform dust extraction and blowing operations can effectively remove oil fumes and dust from the surface of the glass body 11 during laser processing. This prevents oil fumes and dust from accumulating on the surface of the glass body 11, causing dirt on the surface of the glass body 11 and affecting the laser effect.

[0059] S209: Clean the laser-processed product to obtain the target product.

[0060] In one specific implementation scenario, the laser-processed product undergoes a cleaning operation to further remove residual dust from the surface of the glass body 11, improving the cleaning effect and obtaining the target product. In other implementation scenarios, the target product undergoes quality inspection to determine whether it can be considered a qualified product. For example, the target product is placed under a microscope to obtain its appearance and measure the current processing contour dimensions. Another example is checking whether edge burrs and surface dust on the target product have been completely removed, and determining whether the current processing contour dimensions meet preset requirements. If the target product is qualified, it is transferred to the next process step for further processing. If the target product is not qualified, it is determined whether it can be repaired through secondary processing, such as by laser processing again to remove all material layers. If it can be repaired through secondary processing, it is transferred to the process step requiring repair for the corresponding repair process. If it cannot be repaired through secondary processing, for example, if the area of ​​the removed material layer is too large, the target product is transferred to the scrap department for unified scrapping.

[0061] As described above, in this embodiment, a dust extraction device and a blowing device are provided on the side of at least two material layers away from the glass body. This can effectively remove the smoke and dust generated during laser processing, thereby improving the processing effect. A protective fixture is provided on the side of the processing fixture away from the product to be processed, which can prevent the laser from escaping and damaging the equipment or the glass body. The laser passes through the glass body and is directed towards the at least two material layers for laser processing, which can effectively reduce the absorption of the laser by the glass, thereby reducing the possibility of glass damage. It can also effectively prevent the reaction between adjacent material layers to form new, difficult-to-process compounds. Furthermore, it can pre-process the inner material layers in advance, further improving processing efficiency and processing effect.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for removing multiple layers of material from the surface of glass products, characterized in that, Includes the following steps: Obtain a product to be processed, the product to be processed including a glass body and at least two material layers stacked on a surface of the glass body, the at least two material layers being of different materials, including a functional inorganic binder layer disposed on the surface of the glass body and an ink layer disposed on the functional inorganic binder layer away from the surface of the glass body. Acquire a target processing image, construct a target processing drawing based on the target processing image, and construct a material processing drawing for each material layer based on the layer characteristics of each material layer; fix the product to be processed onto a processing fixture, and place a laser emitter on the side of the glass body of the product to be processed away from the at least two material layers; The laser emitter is driven to emit a laser to perform laser processing on the product to be processed. The focal position of the laser emitted by the laser emitter is set on the side of the functional inorganic binder layer close to the ink layer. According to the material processing drawing of each material layer, the at least two material layers are laser processed in order from far to near the glass body to remove the at least two material layers on the surface of the glass body.

2. The method for removing multiple layers of material from the surface of glass products according to claim 1, characterized in that, Before the step of driving the laser emitter to emit laser light to perform laser processing on the product to be processed, the method for removing multiple layers of material from the surface of the glass product further includes the following steps: A dust extraction device and a blowing device are provided on the side of the at least two material layers away from the glass body; Simultaneously with the step of driving the laser emitter to emit laser light to perform laser processing on the product to be processed, the method for removing multiple layers of material from the surface of the glass product further includes: The dust extraction device and the blowing device are driven to perform dust extraction and blowing operations to remove oil fumes and dust from the surface of the glass body.

3. The method for removing multiple layers of material from the surface of glass products according to claim 2, characterized in that, The dust extraction device and the blower are set relative to each other at a preset angle greater than 0.

4. The method for removing multiple layers of material from the surface of glass products according to claim 1, characterized in that, The processing fixture includes at least one hollowed-out area; Following the step of positioning the laser emitter on the side of the glass body of the article to be treated away from the at least two material layers, the method for removing multiple material layers from the surface of the glass article further includes the following steps: A protective fixture is provided on the side of the processing fixture away from the workpiece to be processed, so as to prevent the laser emitted by the laser emitter from passing through the at least one hollowed-out area and causing damage.

5. The method for removing multiple layers of material from the surface of glass products according to claim 1, characterized in that, After the step of driving the laser emitter to emit laser light, the method for removing multiple layers of material from the surface of the glass product further includes the following steps: The laser-processed product is then cleaned to obtain the target product.

6. The method for removing multiple layers of material from the surface of glass products according to claim 1, characterized in that, The step of obtaining the product to be processed includes: Obtain the target layer region, and sequentially coat at least two layers of the material in the target layer region on one side of the glass body to obtain the article to be processed.

7. The method for removing multiple layers of material from the surface of glass products according to claim 1, characterized in that, The laser emitter is an ultraviolet picosecond laser.

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