Matte glass laser processing equipment

Abstract

The utility model provides matt glass laser processing equipment which comprises a base station, a laser processing device and a laser processing device, wherein the base station is used for placing matt glass; the laser head is movably arranged relative to the base table, and the laser head can generate a laser beam towards the base table; the coaming is arranged on the base table, the coaming is in a closed ring shape, the coaming and the base table jointly define a working cavity, the working cavity is filled with an auxiliary medium, the matte glass is located in the working cavity and immersed in the auxiliary medium, and the refractive index of the auxiliary medium is matched with that of the matte glass; and the plane light-transmitting glass is arranged opposite to the base station, a light-transmitting cavity is formed between the plane light-transmitting glass and the matte glass, and an area, through which the laser beams penetrate, in the light-transmitting cavity is filled with an auxiliary medium. The auxiliary medium provided by the utility model can fill and level up a matte structure or a concave-convex structure on the surface of one side, facing the plane light-transmitting glass, of the matte glass on a processing path of a laser beam, is convenient to clean the processed matte glass, and is simple in structure, high in efficiency and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of frosted glass processing, in particular to a laser processing device for frosted glass. Background Art

[0002] At present, the glass covers of consumer electronic devices are mostly upgraded from ordinary aluminosilicate glass to microcrystalline glass. The main advantage of microcrystalline glass is higher strength and greater drop resistance. However, compared with ordinary glass, its manufacturing is different. Due to the addition of the rolling process in manufacturing, its surface is foggy, which is called frosted glass, and its surface light transmittance drops significantly, resulting in increased laser processing difficulty.

[0003] Chinese Patent with the publication number CN113290325A discloses a laser processing method, which includes the following steps: coating a liquid glue layer on a frosted material; performing planar treatment and curing treatment on the glue layer; performing laser processing on the frosted material on one side where the glue layer is provided; and removing the glue layer on the frosted material. The laser processing method of the application technical solution can effectively focus and cut the frosted material. However, the glue layer coated on the frosted material needs to be removed after the laser processing, which is costly and has low production efficiency. The risk of damage to the frosted material is increased during the process of removing the glue layer, reducing the yield rate; in addition, coating requires additional equipment including coating equipment and curing equipment, increasing the cost. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a laser processing device for frosted glass, which has a simple structure and can achieve high-quality and high-efficiency processing of frosted glass.

[0005] The embodiments of the utility model are realized through the following technical solutions:

[0006] A laser processing device for frosted glass includes: a base for placing the frosted glass; a laser head movably arranged relative to the base, and the laser head can generate a laser beam towards the base; a surrounding plate arranged on the base, the surrounding plate is a closed ring, and the surrounding plate and the base jointly define an operation cavity. The operation cavity is filled with an auxiliary medium, the frosted glass is in the operation cavity and immersed in the auxiliary medium, and the refractive index of the auxiliary medium matches the refractive index of the frosted glass; a planar transparent glass is arranged opposite to the base, the frosted glass is between the planar transparent glass and the base, a light-transmitting cavity is formed between the planar transparent glass and the frosted glass, and the area where the laser beam passes through in the light-transmitting cavity is filled with the auxiliary medium.

[0007] According to a preferred embodiment, the auxiliary medium is an organic solution or an inorganic salt solution.

[0008] According to a preferred embodiment, injection ports and discharge ports are respectively formed in the side walls of the surrounding plate. The injection ports are used for injecting the auxiliary medium, and the discharge ports are used for discharging the auxiliary medium.

[0009] According to a preferred embodiment, the planar light-transmitting glass is arranged in parallel with the matte glass.

[0010] According to a preferred embodiment, the minimum distance between the planar light-transmitting glass and the matte glass is D1, where 0.5 mm ≤ D1 ≤ 5 mm.

[0011] According to a preferred embodiment, 1 mm ≤ D1 ≤ 3 mm.

[0012] According to a preferred embodiment, the matte glass laser processing device further includes a Bessel cutting head, which moves synchronously with the laser head and is used for focusing the laser beam generated by the laser head. The planar light-transmitting glass is installed at the light-emitting end of the Bessel cutting head.

[0013] According to a preferred embodiment, the planar light-transmitting glass includes a light-transmitting portion, and an installation cylinder is arranged on the periphery of the light-transmitting portion. The installation cylinder is sleeved outside the light-emitting end of the Bessel cutting head.

[0014] According to a preferred embodiment, the matte glass laser processing device further includes an installation sleeve, which includes a sleeve portion. A flat portion is arranged at one end of the sleeve portion facing the base table, and the planar light-transmitting glass is installed on the flat portion; the sleeve portion is sleeved outside the light-emitting end of the Bessel cutting head.

[0015] According to a preferred embodiment, the matte glass laser processing device further includes a Bessel cutting head, which moves synchronously with the laser head and is used for focusing the laser beam generated by the laser head; the planar light-transmitting glass is installed in the working chamber.

[0016] According to a preferred embodiment, the matte glass laser processing device further includes a medium tank and a filtering component. The medium tank is used for storing the auxiliary medium, and the medium tank is communicated with the working chamber; a liquid supply channel and a liquid return channel are provided between the medium tank and the working chamber, and a filtering component is arranged on the liquid return channel.

[0017] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects:

[0018] The area through which the laser beam passes in the light-transmitting cavity of the present utility model is the processing path for laser beam to process the frosted glass. Therefore, the auxiliary medium here can fill the frosted structure or the concave-convex structure on the surface of the frosted glass facing the side of the planar light-transmitting glass on the laser beam processing path. And on the processing path, the auxiliary medium fills the gap between the planar light-transmitting glass and the frosted glass, so that the auxiliary medium can form a light-incident plane on the joint surface between the planar light-transmitting glass and the auxiliary medium under the limitation of the planar light-transmitting glass. The planar light-transmitting glass ensures the formation and structural stability of the light-incident plane, which is beneficial for the laser beam to enter the frosted glass with a stable structure for effective focusing, and further beneficial for improving the processing quality of the frosted glass. The structure is simple, with high efficiency and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the structure of a Bessel cutting head assembled with a planar light-transmitting glass provided by an embodiment of the present utility model;

[0021] Figure 2 For Figure 1 Partial enlarged schematic diagram of the structure at A in

[0022] Figure 3 Schematic diagram of the structure of a Bessel cutting head assembled with a planar light-transmitting glass provided by another embodiment of the present utility model;

[0023] Figure 4 Schematic diagram of a laser processing situation of a frosted glass provided by an embodiment of the present utility model;

[0024] Figure 5 Schematic diagram of another laser processing situation of a frosted glass provided by an embodiment of the present utility model;

[0025] Figure 6 Schematic diagram of the circulation loop of the auxiliary medium in a laser processing device for frosted glass provided by an embodiment of the present utility model.

[0026] Icons: 1. Bezier cutting head; 2. Flat light-transmitting glass; 21. Light-transmitting part; 22. Mounting cylinder; 23. Baffle; 3. Mounting sleeve; 31. Sleeve part; 32. Straight part; 321. First light-transmitting hole; 4. Base; 5. Frosted glass; 6. Auxiliary medium; 7. Pressure plate; 71. Second light-transmitting hole; 8a. Medium box; 8b. Filter assembly; 9. Enclosure; 91. Injection port; 92. Discharge port; I. Working cavity. Detailed implementation mode

[0027] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0030] Please refer to Figures 1 to 6, A laser processing device for frosted glass, comprising a base 4, a laser head (not shown in the figure), a surrounding plate 9, and a planar light-transmitting glass 2, wherein: The base 4 is used to place the frosted glass 5; The laser head is movably arranged relative to the base 4, and the laser head can generate a laser beam towards the base 4; The surrounding plate 9 is arranged on the base 4, the surrounding plate 9 is a closed ring, and the surrounding plate 9 and the base 4 jointly define an operation chamber I. An auxiliary medium 6 is filled in the operation chamber I. The frosted glass 5 is located in the operation chamber I and is immersed in the auxiliary medium 6. The refractive index of the auxiliary medium 6 matches the refractive index of the frosted glass 5; The planar light-transmitting glass 2 is arranged opposite to the base 4. The frosted glass 5 is located between the planar light-transmitting glass 2 and the base 4. A light-transmitting cavity is formed between the planar light-transmitting glass 2 and the frosted glass 5. The area through which the laser beam passes in the light-transmitting cavity is filled with the auxiliary medium 6. It can be understood that the area through which the laser beam passes in the light-transmitting cavity is the processing path for the laser beam to process the frosted glass 5. Therefore, the auxiliary medium 6 here can fill in the frosted structure or the concave-convex structure on the surface of the frosted glass 5 facing the planar light-transmitting glass 2 on the processing path of the laser beam. And on the processing path, the auxiliary medium 6 fills the gap between the planar light-transmitting glass 2 and the frosted glass 5, so that the auxiliary medium 6 can form a light-incident plane on the joint surface between the planar light-transmitting glass 2 and the auxiliary medium 6 under the limitation of the planar light-transmitting glass 2. The planar light-transmitting glass 2 ensures the formation and structural stability of the light-incident plane, which is beneficial for the laser beam to enter the frosted glass 5 effectively and be focused according to Figure 4 and Figure 5 The stable structure shown enters the frosted glass 5, which is beneficial to improving the processing quality of the frosted glass 5.

[0031] In this embodiment, the auxiliary medium 6 is an organic solution or an inorganic salt solution. When the auxiliary medium 6 is a solution, the planar light-transmitting glass 2 can ensure the structural stability of the light-incident plane and is beneficial for the rapid formation of the light-incident plane. At the same time, it is convenient to rinse and clean the surface of the frosted glass 5 after processing. The work difficulty is low, the process is simple, and the production cost is effectively reduced.

[0032] In this embodiment, when the auxiliary medium 6 is an inorganic salt solution, it can be any one of saturated calcium chloride solution, zinc chloride solution, or potassium nitrate solution; when the auxiliary medium 6 is an organic solution, the auxiliary medium 6 can be, for example, potassium citrate solution, potassium formate solution, or ethylene glycol solution.

[0033] Such as Figure 4 and Figure 5As shown, injection ports 91 and discharge ports 92 are respectively formed on the side wall of the enclosing plate 9. The injection port 91 is used for injecting the auxiliary medium 6, and the discharge port 92 is used for discharging the auxiliary medium 6. Preferably, the injection port 91 and the discharge port 92 are oppositely arranged. During use, by controlling the flow rates of the injection port 91 and the discharge port 92 so that the liquid level of the auxiliary medium 6 in the enclosing plate 9 always remains at a certain height, the auxiliary medium 6 in the enclosing plate 9 can be made to be in a flowing state. At the same time, during this process, impurities generated during the processing can be discharged together through the discharge port 92. Through filtration, the recycling of the auxiliary medium 6 can be achieved, and the purity of the auxiliary medium 6 in the enclosing plate 9 is ensured, which is beneficial to ensuring the processing quality of the matte glass 5. Further, the flowing auxiliary medium 6 can effectively disperse the heat transferred by the laser beam to the auxiliary medium 6, avoiding the local heating of the auxiliary medium 6 caused by the laser beam irradiation and being scattered. At the same time, the concentration of each region of the auxiliary medium 6 can be ensured to be uniform. And if glass chips are generated during the laser processing, they can be washed away from the laser beam processing path by the flowing auxiliary medium 6. Based on the above effects, the flowing auxiliary medium 6 is more conducive to the stable transmission of the laser beam in the flowing medium.

[0034] In this embodiment, as Figure 4 and Figure 5 shown, the planar light-transmitting glass 2 is arranged parallel to the matte glass 5.

[0035] Further, the minimum distance between the planar light-transmitting glass 2 and the matte glass 5 is D1, where 0.5 mm ≤ D1 ≤ 5 mm. Preferably, 1 mm ≤ D1 ≤ 3 mm.

[0036] As Figures 1 to 3 shown, the matte glass laser processing device further includes a Bessel cutting head 1. The Bessel cutting head 1 moves synchronously with the laser head and is used for focusing the laser beam generated by the laser head. The planar light-transmitting glass 2 is installed at the light-emitting end of the Bessel cutting head 1. The laser beam focused by the Bessel cutting head 1 can form a Bessel focal line in the matte glass 5, thereby enabling processing such as cutting or drilling of the matte glass 5.

[0037] In some embodiments, as Figure 3 shown, the planar light-transmitting glass 2 includes a light-transmitting portion 21. An installation cylinder 22 is arranged on the periphery of the light-transmitting portion 21. The installation cylinder 22 is sleeved outside the light-emitting end of the Bessel cutting head 1. Here, the light-transmitting portion 21 is used to cooperate with the auxiliary medium 6 to form a light-incident plane, and the installation cylinder 22 is used to install the light-transmitting portion 21 on the Bessel cutting head 1 and prevent the auxiliary medium 6 from flowing to the upper side of the light-transmitting portion 21 under the working conditions as Figure 4 shown (the planar light-transmitting glass 2 moves synchronously with the Bessel cutting head 1). It should be noted that as Figure 4As shown, when the planar light-transmitting glass 2 moves synchronously with the Bessel cutting head 1, it will disturb the auxiliary medium 6. Therefore, the design of the mounting cylinder 22 is necessary. In this embodiment, the light-transmitting part 21 and the mounting cylinder 22 are integrally formed. The mounting cylinder 22 is snap-connected or thread-connected or assembled to the Bessel cutting head 1 by bolts or screws.

[0038] In another embodiment, as Figure 1 and Figure 2 shown, the frosted glass laser processing device further includes a mounting sleeve 3. The mounting sleeve 3 includes a sleeve part 31. One end of the sleeve part 31 facing the base 4 is provided with a flat part 32. The planar light-transmitting glass 2 is installed on the flat part 32. The sleeve part 31 is sleeved outside the light-emitting end of the Bessel cutting head 1. With such a setting, the production cost can be reduced. Preferably, the planar light-transmitting glass 2 is sapphire glass, which has a high enough strength and is not easily deformed under pressure. At the same time, its refractive index is relatively large and the damage threshold is relatively high, and it is not easily damaged by laser focusing. Further, as Figure 2 shown, the inner side surface of the flat part 32 is provided with a groove, and a first light-transmitting hole 321 is penetrated through the bottom of the groove. The planar light-transmitting glass 2 is embedded in the groove. Further still, it further includes a pressing plate 7. A second light-transmitting hole 71 is penetrated through the pressing plate 7. The second light-transmitting hole 71 is correspondingly arranged with the first light-transmitting hole 321. The pressing plate 7 is fixed to the inner side surface of the flat part 32 by bolts or screws for pressing and fixing the planar light-transmitting glass 2 into the groove. With such a setting, it is convenient to disassemble and replace the planar light-transmitting glass 2. It can be understood that in this embodiment, the function of the sleeve part 31 is the same as that of the mounting cylinder 22 in the foregoing embodiment, and will not be elaborated here.

[0039] In another embodiment, as Figure 5 shown, the frosted glass laser processing device further includes a Bessel cutting head 1. The Bessel cutting head 1 moves synchronously with the laser head and is used to focus the laser beam generated by the laser head. The planar light-transmitting glass 2 is installed in the working chamber I. In this embodiment, the planar light-transmitting glass 2 is relatively stationary with respect to the frosted glass 5 and can be supported and installed on the base 4 or the surrounding plate 9 through structures such as a support rod (not shown in the figure) or a boss (not shown in the figure). When this solution is used, it is preferably the case where the planar light-transmitting glass 2 can completely cover the frosted glass 5. Since the planar light-transmitting glass 2 is stationary relative to the frosted glass 5, compared with the working condition as Figure 4 shown, during the processing, the disturbance of the planar light-transmitting glass 2 to the auxiliary medium 6 can be ignored, which can effectively avoid generating bubbles between the planar light-transmitting glass 2 and the frosted glass 5, is beneficial to ensuring the stability of the light incident plane structure, and thus is beneficial to the stable transmission of the laser beam in the auxiliary medium 6, and further is beneficial to the formation of the Bessel focal line. When in use, a baffle 23 can be circumferentially arranged on the upper side surface of the planar light-transmitting glass 2 as needed to prevent the auxiliary medium 6 from flowing to the upper side surface of the planar glass and affecting the transmission of the laser beam.

[0040] As Figure 6 shown, the matte glass laser processing equipment further includes a medium tank 8a and a filtering component 8b. The medium tank 8a is used for storing the auxiliary medium 6, and the medium tank 8a is communicated with the working chamber I; there are a liquid supply channel and a liquid return channel between the medium tank 8a and the working chamber I, and a filtering component 8b is arranged on the liquid return channel. During use, the auxiliary medium 6 in the medium tank 8a is pumped into the working chamber I through the liquid supply channel by a water pump, and then flows back to the medium tank 8a through the liquid return channel. During this process, the filtering component 8b can filter the impurities in the returned auxiliary medium 6, so that the recycling of the auxiliary medium 6 can be realized. The filtering component 8b can be any existing filtering device for filtering liquids. Optionally, its filter element includes but is not limited to synthetic fiber cotton, non-woven cotton or glass fiber cotton. In this embodiment, a filtering device with a particle size of 5um or smaller is preferably used.

[0041] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A frosted glass laser processing equipment, characterized in that: include: A base (4) for placing the frosted glass (5); A laser head is movably arranged relative to the base (4), and the laser head is capable of generating a laser beam toward the base (4); A panel (9) is arranged on the base (4), the panel (9) is in a closed ring shape, the panel (9) and the base (4) together define a working chamber (I), the working chamber (I) is filled with an auxiliary medium (6), the frosted glass (5) is in the working chamber (I) and immersed in the auxiliary medium (6), and the refractive index of the auxiliary medium (6) matches the refractive index of the frosted glass (5); The plane light-transmitting glass (2) is arranged opposite to the base (4), the frosted glass (5) is located between the plane light-transmitting glass (2) and the base (4), a light-transmitting cavity is formed between the plane light-transmitting glass (2) and the frosted glass (5), and the area in the light-transmitting cavity through which the laser beam passes is filled with the auxiliary medium (6).

2. The frosted glass laser processing equipment according to claim 1, characterized in that: The auxiliary medium (6) is an organic solution or an inorganic salt solution.

3. The frosted glass laser processing equipment according to claim 1, characterized in that: The side walls of the enclosure (9) are respectively provided with an injection port (91) and a discharge port (92), wherein the injection port (91) is used to inject the auxiliary medium (6), and the discharge port (92) is used to discharge the auxiliary medium (6).

4. The frosted glass laser processing equipment according to claim 1, characterized in that: The plane light-transmitting glass (2) and the frosted glass (5) are arranged in parallel.

5. The frosted glass laser processing equipment according to claim 1 or 4, characterized in that: The minimum distance between the plane light-transmitting glass (2) and the frosted glass (5) is D1, 0.5 mm≤D1≤5 mm.

6. The frosted glass laser processing equipment according to claim 5, characterized in that: 1mm≤D1≤3mm.

7. The frosted glass laser processing equipment according to claim 1, characterized in that: The frosted glass laser processing equipment further comprises a Bessel cutting head (1), the Bessel cutting head (1) moves synchronously with the laser head and is used to focus the laser beam generated by the laser head, and the plane light-transmitting glass (2) is mounted on the light-emitting end of the Bessel cutting head (1).

8. The frosted glass laser processing equipment according to claim 7, characterized in that: The plane light-transmitting glass (2) comprises a light-transmitting portion (21), a mounting tube (22) is provided on the periphery of the light-transmitting portion (21), and the mounting tube (22) is sleeved outside the light-emitting end of the Bessel cutting head (1).

9. The frosted glass laser processing equipment according to claim 7, characterized in that: The frosted glass laser processing equipment further comprises a mounting sleeve (3), the mounting sleeve (3) comprising a sleeve portion (31), a straight portion (32) being arranged at one end of the sleeve portion (31) facing the base (4), and the plane light-transmitting glass (2) being mounted on the straight portion (32); The sleeve portion (31) is sleeved outside the light output end of the Bessel cutting head (1).

10. The frosted glass laser processing equipment according to claim 1, characterized in that: The frosted glass laser processing equipment further comprises a Bessel cutting head (1), wherein the Bessel cutting head (1) moves synchronously with the laser head and is used for focusing the laser beam generated by the laser head; The flat light-transmitting glass (2) is installed in the working chamber (I).

11. The frosted glass laser processing equipment according to claim 1, characterized in that: The frosted glass laser processing equipment further comprises a medium box (8a) and a filter assembly (8b), wherein the medium box (8a) is used to store auxiliary medium (6), and the medium box (8a) is connected to the working chamber (I); A liquid delivery channel and a liquid return channel are provided between the medium box (8a) and the working chamber (I), and a filter assembly (8b) is provided on the liquid return channel.

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