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 liquid injection head is arranged between the laser head and the base station, and the liquid injection head and the laser head move synchronously; a liquid injection cavity is formed in the liquid injection head, a liquid outlet is formed in the side wall, facing the base station, of the liquid injection cavity, a light-transmitting part is arranged on the side wall, facing the laser head, of the liquid injection cavity, the light-transmitting part and the liquid outlet are correspondingly arranged, the liquid injection cavity is filled with an auxiliary medium, and the refractive index of the auxiliary medium is matched with the refractive index of the matte glass. And the auxiliary medium in the liquid injection cavity can be filled between the matte glass and the light-transmitting part from the liquid outlet. The processing equipment provided by the utility model can fill the auxiliary medium for the surface of the light-transmitting part and the surface of the matte glass in real time, so that a laser beam stably enters the matte glass to form a focal line.

Description

Technical Field

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

[0002] At present, the glass cover plates of consumer electronic devices are mostly upgraded from ordinary aluminosilicate glass to microcrystalline glass. The main advantage of microcrystalline glass is that it is stronger and more resistant to falling. However, compared with ordinary glass, its manufacturing is different. Due to the addition of a rolling process in the manufacturing process, its surface is foggy, which is called frosted glass. Its surface transmittance is significantly reduced, which makes laser processing more difficult.

[0003] A Chinese patent with publication number CN113290325A discloses a laser processing method, which includes the following steps: coating a liquid adhesive layer on a matte material; performing planar processing and curing on the adhesive layer; laser processing the matte material on the side where the adhesive layer is provided; and removing the adhesive layer on the matte material. The laser processing method of the technical solution of this application can effectively focus and cut the matte material. However, the adhesive layer coated on the matte material needs to be removed after the laser processing is completed, which is costly and has low production efficiency. The risk of damage to the matte material is increased during the removal of the adhesive layer, which reduces the yield rate. In addition, coating requires additional equipment including coating equipment and curing equipment, which increases the cost. Utility Model Content

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

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A frosted glass laser processing device comprises: a base for placing frosted glass; a laser head movably arranged relative to the base, the laser head being able to generate a laser beam toward the base; a liquid injection head arranged between the laser head and the base, the liquid injection head and the laser head moving synchronously; the liquid injection head is provided with a liquid injection cavity, a liquid outlet is provided on a side wall of the liquid injection cavity facing the base, a light-transmitting portion is arranged on a side wall of the liquid injection cavity facing the laser head, the light-transmitting portion is arranged corresponding to the liquid outlet, the laser beam passes through the light-transmitting portion and the liquid outlet in sequence from the laser head; the liquid injection cavity is filled with an auxiliary medium, the refractive index of the auxiliary medium matches the refractive index of the frosted glass, and the auxiliary medium in the liquid injection cavity can be filled from the liquid outlet to between the frosted glass and the light-transmitting portion.

[0007] According to a preferred embodiment, the injection head includes an inner shell and an outer shell, the outer shell is sleeved on the inner shell, and the outer shell is located between the inner shell and the base; the injection cavity is formed between the inner shell and the outer shell, the liquid outlet is penetrated through the outer shell, and the light-transmitting portion is arranged on the inner shell.

[0008] According to a preferred embodiment, the inner shell includes an inner cylinder portion, an inner sealing plate is provided at one end of the inner cylinder portion facing the outer shell, and the light-transmitting portion is provided on the inner sealing plate; the outer shell includes an outer cylinder portion, an outer sealing plate is provided at one end of the outer cylinder portion facing the base, and the liquid outlet is provided on the outer sealing plate; the outer cylinder portion is sleeved on the outside of the inner cylinder portion.

[0009] According to a preferred embodiment, an extension ring plate is provided at one end of the inner cylinder portion away from the inner sealing plate, the outer cylinder portion abuts against a side of the extension ring plate facing the inner sealing plate, the extension ring plate is provided with a first through hole, and the outer cylinder portion is provided with a first screw hole corresponding to the first through hole.

[0010] According to a preferred embodiment, a sink groove is provided on a side surface of the inner sealing plate facing away from the outer sealing plate, a first light-transmitting hole is provided through the bottom of the sink groove, and the light-transmitting portion is embedded in the sink groove.

[0011] According to a preferred embodiment, at least one annular boss is provided on a side surface of the inner sealing plate facing the outer sealing plate, and the annular boss is arranged around the periphery of the light-transmitting portion.

[0012] According to a preferred embodiment, a side surface of the light-transmitting portion facing the base is a plane.

[0013] According to a preferred embodiment, the outer sealing plate includes an inclined portion and a straight portion connected to each other, the inclined portion is connected to the outer cylinder portion, the liquid outlet is arranged on the straight portion, the inner wall of the straight portion is parallel to a side of the light-transmitting portion facing the base, the angle between the inner wall of the inclined portion and the inner wall of the straight portion is a first angle, and the first angle is 5°-20°.

[0014] According to a preferred embodiment, the minimum distance between the inner wall of the straight portion and the side surface of the light-transmitting portion facing the base is D2, and 0.5 mm≤D2≤2 mm.

[0015] According to a preferred embodiment, the frosted glass laser processing equipment further includes a recovery tank, and the recovery tank is arranged below the base.

[0016] According to a preferred embodiment, the frosted glass laser processing equipment also includes a medium box and a filter assembly, wherein the medium box is used to store auxiliary medium, the medium box is connected to the injection chamber, the recovery tank is connected to the medium box, and the filter assembly is installed between the recovery tank and the medium box, and is used to filter the auxiliary medium flowing from the recovery tank to the medium box.

[0017] According to a preferred embodiment, the frosted glass laser processing equipment also includes a Bessel cutting head, which moves synchronously with the laser head and is used to focus the laser beam generated by the laser head. The injection head is installed at the light output end of the Bessel cutting head.

[0018] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0019] The liquid injection head of the utility model can provide auxiliary medium in real time to fill the concave-convex structure on the side of the frosted glass facing the laser beam, which is conducive to the laser beam stably entering the frosted glass to form a focal line; at the same time, the auxiliary medium is in a flowing state, so that the heat transferred to the auxiliary medium by the laser beam can be effectively dispersed, and the auxiliary medium can be prevented from being dispersed due to local heating caused by laser beam irradiation. At the same time, the concentration of each area of ​​the auxiliary medium is uniform, and if glass fragments are generated during the laser processing process, they can be flushed away from the laser beam processing path by the flowing auxiliary medium, which is conducive to the stable transmission of the laser beam in the flowing medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a Bessel cutting head provided in an embodiment of the utility model after being equipped with a liquid injection head;

[0022] Figure 2 A schematic diagram of the front view structure of the Bessel cutting head provided in an embodiment of the utility model after being equipped with a liquid injection head;

[0023] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the AA section;

[0024] Figure 4 for Figure 3 A partial enlarged schematic diagram of the structure at B in the middle;

[0025] Figure 5 for Figure 3 A partial enlarged schematic diagram of the structure at C in the middle;

[0026] Figure 6 A schematic diagram of a first three-dimensional structure of a liquid injection head provided in an embodiment of the utility model;

[0027] Figure 7 A second three-dimensional structural schematic diagram of the liquid injection head provided in an embodiment of the utility model;

[0028] Figure 8 A schematic diagram of the exploded structure of the liquid injection head provided in the embodiment of the utility model;

[0029] Fig. 9 Schematic diagram of the optical path of the laser beam when no auxiliary medium is filled between the light-transmitting portion and the frosted glass;

[0030] Fig.10 Schematic diagram of the optical path of the laser beam when the auxiliary medium is filled between the light-transmitting part and the frosted glass;

[0031] Fig.11 A schematic diagram of a circulation loop of an auxiliary medium in a frosted glass laser processing device provided in an embodiment of the utility model.

[0032] Icons: 1. Bessel cutting head; 2. Mounting plate; 3. Liquid injection head; 31. Outer shell; 311. Liquid outlet; 312. Liquid injection joint; 313. Outer cylinder; 314. Outer sealing plate; 3141. Inclined portion; 3142. Straight portion; 315. First screw hole; 32. Inner shell; 321. Inner cylinder; 322. Extended ring plate; 3221. First through hole; 323. Inner sealing plate; 3231. First light-transmitting hole; 3232. Angle boss; 324. Light-transmitting portion; 325. Pressing plate; 3251. Second light-transmitting hole; 326. First trough; 327. Second trough; 33. First sealing ring; 4. Base; 5. Frosted glass; 6. Auxiliary medium; 8a. Medium box; 8b. Recovery tank; 8c. Filter assembly; α. First angle; Ⅰ. Liquid injection cavity. DETAILED DESCRIPTION

[0033] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0036] Please refer to Figures 1 to 11 , a frosted glass laser processing equipment, including a base 4, a laser head (not shown in the figure) and a liquid injection head 3, wherein: the base 4 is used to support the frosted glass 5; the laser head is movably arranged relative to the base 4, and the laser head can generate a laser beam toward the base 4; the liquid injection head 3 is arranged between the laser head and the base 4, and the liquid injection head 3 moves synchronously with the laser head; the liquid injection head 3 is provided with a liquid injection chamber I, and a liquid outlet 311 is opened on a side wall of the liquid injection chamber I facing the base 4, and a light-transmitting portion 324 is arranged on a side wall of the liquid injection chamber I facing the laser head, and the light-transmitting portion 324 is arranged corresponding to the liquid outlet 311, and the laser beam passes through the light-transmitting portion 324 and the liquid outlet 311 from the laser head in sequence, and the liquid injection chamber I is filled with an auxiliary medium 6, and the refractive index of the auxiliary medium 6 matches the refractive index of the frosted glass 5, and the auxiliary medium 6 in the liquid injection chamber I can be filled from the liquid outlet 311 to between the frosted glass 5 and the light-transmitting portion 324. When in use, the auxiliary medium 6 in the injection cavity I is discharged from the liquid outlet 311 at a certain pressure so that the auxiliary medium 6 fills the gap between the light-transmitting portion 324 and the frosted glass 5 to fill the concave-convex structure on the side of the frosted glass 5 facing the laser beam.

[0037] In this embodiment, optionally, the auxiliary medium 6 includes at least an inorganic salt solution, which is not easily broken up by the laser, and has a higher laser energy destruction threshold than organic matter. Therefore, when used as the auxiliary medium 6 and irradiated by the laser, it has higher stability than organic matter such as the UV glue mentioned in the Chinese patent with publication number CN113290325A; at the same time, the inorganic salt solution has high fluidity and can better flow to the concave-convex structure on the surface of the frosted glass 5 and fully fill it, thereby reducing the possibility of bubbles generated at the interface between the auxiliary medium 6 and the frosted glass 5. After the frosted glass 5 is processed, the auxiliary medium 6 can be rinsed, and the process is simple and the cost is low. Compared with the method of coating the adhesive layer, the yield rate of the frosted glass 5 product processing can be improved.

[0038] like Fig. 9 As shown in FIG. 1 , the auxiliary medium 6 is not filled on the surface of the frosted glass 5, or it is understood that the auxiliary medium 6 filled is air, which makes the laser beam difficult to form a Bessel focal line in the frosted glass 5 due to the fog structure or concave-convex structure on the surface of the frosted glass 5. In contrast, in this embodiment, Fig.10 As shown, after the auxiliary medium 6 is filled on the side of the frosted glass 5 facing the laser beam, since the refractive index of the auxiliary medium 6 matches the refractive index of the frosted glass 5, that is, the refractive indexes of the two are close, it can be understood that the auxiliary medium 6 is a part of the frosted glass 5, so that the frosted structure or the concave-convex structure on the surface of the frosted glass 5 can be filled, which is conducive to the formation of the Bessel focal line in the frosted glass 5, and it is convenient to process the frosted glass 5.

[0039] It should be noted that the side of the auxiliary medium 6 facing the laser beam forms a light entry plane. The laser beam enters the auxiliary medium 6 from the light entry plane and then enters the frosted glass 5. For this reason, preferably, the side of the light-transmitting portion 324 facing the base 4 is a plane. In this way, the auxiliary medium 6 between the light-transmitting portion 324 and the frosted glass 5 can form the aforementioned light entry plane under the limit of the light-transmitting portion 324, which is conducive to the laser beam as shown in FIG. Fig.10 The stable structure shown enters the frosted glass 5 through the auxiliary medium 6. In this embodiment, the light-transmitting portion 324 is sapphire glass. Sapphire glass has high strength and is not easily deformed by pressure. It also has a relatively large refractive index and a relatively high damage threshold, and is not easily damaged by laser focusing.

[0040] In this embodiment, the auxiliary medium 6 is any one of a calcium chloride solution, a zinc chloride solution or a potassium nitrate solution.

[0041] Preferably, the auxiliary medium 6 is entirely a calcium chloride solution. Preferably, the calcium chloride solution is in a saturated state. The saturated calcium chloride solution has a refractive index close to that of the frosted glass 5, which is conducive to the laser beam being stably transmitted from the auxiliary medium 6 to the frosted glass 5 to be focused inside the frosted glass 5.

[0042] Of course, in other embodiments, the auxiliary medium 6 may also be an organic solution, such as potassium citrate solution, potassium formate solution or ethylene glycol solution.

[0043] In this embodiment, under the action of the injection head 3, the auxiliary medium 6 is in a flowing state. In this way, the heat transferred from the laser beam to the auxiliary medium 6 can be effectively dispersed, and the auxiliary medium 6 can be prevented from being dispersed due to local heating caused by laser beam irradiation. At the same time, the concentration of each area of ​​the auxiliary medium 6 can be ensured to be uniform, and if glass chips are generated during the laser processing, they can be flushed away from the laser beam processing path by the flowing auxiliary medium 6. Based on the above effects, the auxiliary medium 6 in a flowing state is more conducive to the stable transmission of the laser beam in the flowing medium.

[0044] It should be noted that, in some embodiments, it is not required that the area between the frosted glass 5 and the light-transmitting portion 324 is completely filled with the auxiliary medium 6. As long as the area between the frosted glass 5 and the light-transmitting portion 324 on the laser beam irradiation path is filled with the auxiliary medium 6 so that the laser beam can pass through the auxiliary medium 6 smoothly, Fig.10 The stable state shown is to enter the frosted glass 5.

[0045] In this embodiment, the laser wavelength is 1000nm-1100nm, and the pulse width is 500fs-15ps. Preferably, the laser wavelength is 1030nm-1070nm.

[0046] In this embodiment, Fig.10 As shown, the minimum distance between the light-transmitting portion 324 and the frosted glass 5 is D1, 0.5 mm ≤ D1 ≤ 5 mm. Further, 1 mm ≤ D1 ≤ 3 mm. It can be understood that the minimum distance is the minimum distance between the light-incoming plane and the frosted glass 5.

[0047] Furthermore, the injection head 3 comprises an inner shell 32 and an outer shell 31, wherein the outer shell 31 is sleeved on the inner shell 32, and the outer shell 31 is between the inner shell 32 and the base 4; a liquid injection cavity I is formed between the inner shell 32 and the outer shell 31, a liquid outlet 311 is provided through the outer shell 31, and a light-transmitting portion 324 is provided in the inner shell 32. With such a configuration, the structure is simple and easy to process.

[0048] Furthermore, if Figures 2 to 5 As shown, the inner shell 32 includes an inner cylinder portion 321, an inner sealing plate 323 is provided at one end of the inner cylinder portion 321 facing the outer shell 31, and the light-transmitting portion 324 is provided on the inner sealing plate 323; the outer shell 31 includes an outer cylinder portion 313, an outer sealing plate 314 is provided at one end of the outer cylinder portion 313 facing the base 4, and the liquid outlet 311 is provided on the outer sealing plate 314; the outer cylinder portion 313 is sleeved outside the inner cylinder portion 321. Optionally, a first sealing ring 33 is provided between the inner cylinder portion 321 and the outer cylinder portion 313.

[0049] In some embodiments, the outer cylinder portion 313 is threadedly connected to the inner cylinder portion 321 .

[0050] In another embodiment, the outer cylinder portion 313 and the inner cylinder portion 321 are fixed by gluing.

[0051] In this embodiment, in order to facilitate the detachable assembly of the inner shell 32 and the outer shell 31, as shown in FIG. Figure 4 and Figure 8As shown, an extension ring plate 322 is provided at one end of the inner cylinder 321 away from the inner sealing plate 323, the outer cylinder 313 abuts against a side of the extension ring plate 322 facing the inner sealing plate 323, a first through hole 3221 is provided on the extension ring plate 322, and a first screw hole 315 corresponding to the first through hole 3221 is provided on the outer cylinder 313. Bolts or screws are threadedly assembled to the first screw hole 315 through the first through hole 3221.

[0052] like Figure 4 , Figure 5 and Figure 8 As shown, a sink groove is provided on one side of the inner sealing plate 323 away from the outer sealing plate 314, a first light-transmitting hole 3231 is provided through the bottom of the sink groove, and the light-transmitting part 324 is embedded in the sink groove. Such a configuration facilitates the assembly of the light-transmitting part 324 and the inner sealing plate 323.

[0053] Furthermore, the sink groove includes a first sink groove 326 and a second sink groove 327, wherein the first sink groove 326 is arranged on a side of the inner sealing plate 323 away from the outer sealing plate 314, and the second sink groove 327 is arranged at the bottom of the first sink groove 326, and the first light-transmitting hole 3231 is penetrated and arranged at the bottom of the second sink groove 327, and the light-transmitting part 324 is embedded in the second sink groove 327. The injection head 3 also includes a clamping plate 325, which is at least partially embedded in the first sink groove 326 and pressed against the light-transmitting part 324. The clamping plate 325 is connected to the inner sealing plate 323 by bolts or screws. A second light-transmitting hole 3251 is penetrated and arranged on the clamping plate 325, and the second light-transmitting hole 3251 is arranged corresponding to the first light-transmitting hole 3231. The pressing plate 325 is used to fix the light-transmitting portion 324 . When in use, the laser beam passes through the first light-transmitting hole 3231 , the light-transmitting portion 324 and the second light-transmitting hole 3251 in sequence.

[0054] At least one annular boss 3232 is disposed on a side of the inner sealing plate 323 facing the outer sealing plate 314, and the annular boss 3232 is disposed around the periphery of the light-transmitting portion 324. Figure 4 and 5 As shown, in this embodiment, there are two annular bosses 3232 , which are stacked along the incident direction of the laser beam, so that the flow space of the auxiliary medium 6 can be continuously compressed during the auxiliary medium 6 flows to the liquid outlet 311 , thereby playing the role of pressurizing the auxiliary medium 6 .

[0055] Further, the outer sealing plate 314 includes an inclined portion 3141 and a straight portion 3142 connected to each other, the inclined portion 3141 is connected to the outer cylinder portion 313, the liquid outlet 311 is arranged at the straight portion 3142, the inner wall of the straight portion 3142 is parallel to the side of the light-transmitting portion 324 facing the base 4, and the angle between the inner wall of the inclined portion 3141 and the inner wall of the straight portion 3142 is a first angle α, and the first angle α is 5°-20°. In this way, the annular boss 3232 of the inner sealing plate 323 cooperates with the outer sealing plate 314 to gradually compress the flow channel area on the path where the auxiliary medium 6 flows to the liquid outlet 311, thereby achieving the purpose of pressurizing the auxiliary medium 6 at the liquid outlet 311 to ensure that the auxiliary medium 6 fills the gap between the frosted glass 5 and the light-transmitting portion 324 under sufficient pressure.

[0056] In this embodiment, preferably, the first angle α is 9°.

[0057] In this embodiment, the inner wall of the straight portion 3142 is parallel to the side surface of the light-transmitting portion 324 facing the base 4 , and the minimum distance between the two is D2 , 0.5 mm≤D2≤2 mm.

[0058] like Fig.11 As shown, the frosted glass laser processing equipment further includes a recovery tank 8b, which is disposed below the base 4. The recovery tank 8b is used to collect the auxiliary medium 6 discharged from the liquid outlet 311 during the processing, thereby avoiding equipment contamination and realizing the recovery of the auxiliary medium 6, thereby reducing production costs.

[0059] Furthermore, the frosted glass laser processing equipment also includes a medium box 8a and a filter assembly 8c. The medium box 8a is used to store the auxiliary medium 6. The medium box 8a is connected to the injection chamber I, and the recovery tank 8b is connected to the medium box 8a. The filter assembly 8c is installed between the recovery tank 8b and the medium box 8a, and is used to filter the auxiliary medium 6 flowing from the recovery tank 8b to the medium box 8a. In this embodiment, the medium box 8a, the injection chamber I and the recovery tank 8b are connected end to end to form a circulation loop to realize the recycling of the auxiliary medium 6. When in use, the auxiliary medium 6 in the medium box 8a is pumped into the injection chamber I by a water pump, and the auxiliary medium 6 is discharged through the liquid outlet 311 to assist in the cutting of the frosted glass 5 and then recovered to the recovery tank 8b, and then filtered by the filter assembly 8c. The impurities in the auxiliary medium 6 are recycled to the medium box 8a for recycling. The filter assembly 8c 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 filter device with a particle size of 5 um or less is preferred.

[0060] In this embodiment, a liquid injection joint 312 is provided on the housing 31, and the liquid injection joint 312 is connected to the liquid injection chamber I. The liquid injection joint 312 is convenient for connecting the medium box 8a and the liquid injection chamber I using a hose or the like.

[0061] The frosted glass laser processing equipment also includes a Bessel cutting head 1, which moves synchronously with the laser head and is used to focus the laser beam generated by the laser head. The liquid injection head 3 is installed at the light output end of the Bessel cutting head 1. In some embodiments, optionally, the inner shell 32 is sleeved outside the Bessel cutting head 1, and the two can be snap-connected or screwed, or fixedly connected by screws or bolts.

[0062] The frosted glass laser processing equipment also includes a driving component and a mounting plate 2, the mounting plate 2 is assembled and connected to the Bessel cutting head 1 or the injection head 3, and the driving component is used to drive the mounting plate 2 to move in space. The driving component here can be a robotic arm, or any existing linear module combination structure that can realize the three-dimensional space movement of the mounting plate 2.

[0063] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the 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 liquid injection head (3) is arranged between the laser head and the base (4), and the liquid injection head (3) moves synchronously with the laser head; the liquid injection head (3) has a liquid injection cavity (I) built in, and a liquid outlet (311) is provided on a side wall of the liquid injection cavity (I) facing the base (4); a light-transmitting portion (324) is arranged on a side wall of the liquid injection cavity (I) facing the laser head, and the light-transmitting portion (324) and the liquid outlet (311) are arranged correspondingly, and the laser beam passes through the light-transmitting portion (324) and the liquid outlet (311) in sequence from the laser head; The liquid injection cavity (I) is filled with an auxiliary medium (6), the refractive index of the auxiliary medium (6) matches the refractive index of the frosted glass (5), and the auxiliary medium (6) in the liquid injection cavity (I) can be filled from the liquid outlet (311) to between the frosted glass (5) and the light-transmitting portion (324).

2. The frosted glass laser processing equipment according to claim 1, characterized in that: The injection head (3) comprises an inner shell (32) and an outer shell (31), wherein the outer shell (31) is sleeved on the inner shell (32), and the outer shell (31) is located between the inner shell (32) and the base (4); The liquid injection cavity (I) is formed between the inner shell (32) and the outer shell (31), the liquid outlet (311) is arranged through the outer shell (31), and the light-transmitting portion (324) is arranged on the inner shell (32).

3. The frosted glass laser processing equipment according to claim 2, characterized in that: The inner shell (32) comprises an inner cylinder portion (321), an inner sealing plate (323) is provided at one end of the inner cylinder portion (321) facing the outer shell (31), and the light-transmitting portion (324) is provided on the inner sealing plate (323); The housing (31) comprises an outer cylinder (313), an outer sealing plate (314) is provided at one end of the outer cylinder (313) facing the base (4), and the liquid outlet (311) is provided on the outer sealing plate (314); The outer cylinder portion (313) is sleeved outside the inner cylinder portion (321).

4. The frosted glass laser processing equipment according to claim 3, characterized in that: An extension ring plate (322) is provided at one end of the inner cylinder portion (321) away from the inner sealing plate (323), and the outer cylinder portion (313) is abutted against a side of the extension ring plate (322) facing the inner sealing plate (323), and a first through hole (3221) is provided on the extension ring plate (322), and the outer cylinder portion (313) is provided with a first screw hole (315) corresponding to the first through hole (3221).

5. The frosted glass laser processing equipment according to claim 3, characterized in that: A sink groove is provided on one side of the inner sealing plate (323) facing away from the outer sealing plate (314), a first light-transmitting hole (3231) is provided through the bottom of the sink groove, and the light-transmitting portion (324) is embedded in the sink groove.

6. The frosted glass laser processing equipment according to claim 3, characterized in that: At least one annular boss (3232) is provided on a side of the inner sealing plate (323) facing the outer sealing plate (314), and the annular boss (3232) is arranged around the periphery of the light-transmitting portion (324).

7. The frosted glass laser processing equipment according to claim 3, characterized in that: The side surface of the light-transmitting portion (324) facing the base (4) is a plane.

8. The frosted glass laser processing equipment according to claim 7, characterized in that: The outer sealing plate (314) includes an inclined portion (3141) and a straight portion (3142) connected to each other, the inclined portion (3141) is connected to the outer cylinder portion (313), the liquid outlet (311) is arranged on the straight portion (3142), the inner wall of the straight portion (3142) is parallel to a side of the light-transmitting portion (324) facing the base (4), and the angle between the inner wall of the inclined portion (3141) and the inner wall of the straight portion (3142) is a first angle (α), and the first angle (α) is 5°-20°.

9. The frosted glass laser processing equipment according to claim 8, characterized in that: The minimum distance between the inner wall of the straight portion (3142) and the side surface of the light-transmitting portion (324) facing the base (4) is D2, and 0.5 mm ≤ D2 ≤ 2 mm.

10. The frosted glass laser processing equipment according to claim 1, characterized in that: The frosted glass laser processing equipment further comprises a recovery tank (8b), wherein the recovery tank (8b) is arranged below the base platform (4).

11. The frosted glass laser processing equipment according to claim 10, characterized in that: The frosted glass laser processing equipment also includes a medium box (8a) and a filter assembly (8c), wherein the medium box (8a) is used to store auxiliary medium (6), the medium box (8a) is connected to the injection chamber (I), the recovery tank (8b) is connected to the medium box (8a), and the filter assembly (8c) is installed between the recovery tank (8b) and the medium box (8a) and is used to filter the auxiliary medium (6) flowing from the recovery tank (8b) to the medium box (8a).

12. 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 injection head (3) is installed at the light output end of the Bessel cutting head (1).

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