Elliptical light spot laser cutting head

Abstract

The utility model relates to the technical field of laser cutting, in particular to an elliptical light spot laser cutting head which comprises a connecting sleeve and a hollow motor which is installed at the left end in a hollow groove. The light spot forming assembly can extend outwards in the length direction of the hollow groove, the left end of the light spot forming assembly is connected with the hollow motor, the hollow motor is used for driving the light spot forming assembly to rotate synchronously, cylindrical mirrors are evenly installed in the light spot forming assembly, and the shape of a laser beam can be accurately controlled by adjusting arrangement and parameters of the cylindrical mirrors. The light spot forming assembly is driven by the hollow motor to rotate so that oval light spots can be obtained. The hollow motor can drive the light spot forming assembly to rotate, so that light beams penetrating through the light spot forming assembly can rotate along with rotation of the cylindrical mirror set, the dynamic light spot effect is achieved, meanwhile, energy can be better distributed in the cutting process through rotating oval light spots, and the cutting efficiency and quality are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of laser cutting, in particular to an elliptical light spot laser cutting head. BACKGROUND

[0002] In the process of elliptical Bessel beam cutting, a laser emitter generates a laser beam, which forms an elliptical Bessel beam after passing through a specific optical system (such as a cylindrical lens group). The beam is then directed to the surface of a hard and brittle transparent material to be processed. Due to the special energy distribution and transmission characteristics of the Bessel beam, it can form a complex cutting path inside the material and achieve high-precision cutting.

[0003] A Chinese patent with the publication number CN 219703829 U and the name "Elliptical Bessel cutting head device" specifically adopts an elliptical distribution of a diffraction type cone lens combined with a focusing lens to shape the Gaussian distribution of the ultrashort pulse laser into an elliptical Bessel beam, and guide the crack along the elliptical long axis direction on the sapphire and glass. The cutting head is rotated along the pattern tangent angle to realize the processing of any pattern and avoid the oblique cracks generated by the processing of the ordinary Bessel beam.

[0004] The above-mentioned prior art can also realize the function of laser processing by an elliptical Bessel beam in use, but the elliptical light spot is fixed and cannot drive the elliptical light spot to move dynamically, and the arrangement of the cylindrical lens cannot be adjusted, so that the shape of the laser beam cannot be accurately controlled, thereby affecting the use effect of the elliptical light spot. Therefore, there is still room for improvement on the basis of the existing elliptical light spot laser cutting head. CONTENT OF THE UTILITY MODEL

[0005] In order to accurately realize the effect of the dynamic light spot in the laser cutting process and improve the processing quality and efficiency, the application provides an elliptical light spot laser cutting head.

[0006] The elliptical light spot laser cutting head provided by the application adopts the following technical scheme:

[0007] An elliptical light spot laser cutting head comprises a connecting sleeve in a rectangular structure, a cylindrical hollow groove is arranged in the middle of the connecting sleeve, a hollow motor is installed at the left end inside the hollow groove, and a plug rod is uniformly arranged at the lower end of the hollow motor; a light spot forming assembly is installed at the right end inside the hollow groove, the light spot forming assembly can be extended outward along the length direction of the hollow groove, the left end of the light spot forming assembly is connected with the hollow motor, the hollow motor is used to drive the light spot forming assembly to rotate synchronously, cylindrical lenses are uniformly installed inside the light spot forming assembly, the shape of the laser beam can be accurately controlled by adjusting the arrangement and parameters of the cylindrical lenses, and the elliptical light spot can be obtained by driving the light spot forming assembly to rotate through the hollow motor.

[0008] Further, the light spot forming assembly comprises an outer sleeve, rotating collars, a push cylinder and an adjusting unit, the hollow groove is internally provided with the outer sleeve, the outer sleeve is internally provided with the rotating collars at the front and back ends through bearings, the rotating collars are provided with insertion grooves matched with insertion rods, the adjusting unit is mounted between the two rotating collars, the adjusting unit is uniformly provided with cylindrical mirrors, the connecting sleeve is uniformly provided with mounting grooves, the push cylinder is mounted in the mounting grooves, and the rear end of the push cylinder is connected with the outer sleeve.

[0009] Further, the adjusting unit comprises a fixed plate, an electric sliding block, a sliding frame, a limiting guide rail and a mounting frame, the fixed plate is mounted between the two rotating collars at the lower end, the fixed plate is provided with a rectangular groove at the upper end, the electric sliding block is mounted in the rectangular groove, the sliding frame is mounted on the electric sliding block, the limiting guide rails are respectively mounted between the two rotating collars at the front and back sides, the mounting frame is uniformly mounted between the limiting guide rails, and the sliding frame is used for driving the mounting frame to displace.

[0010] Further, the sliding frame is provided with a first adsorption block at the upper end, the first adsorption block is internally provided with an electromagnet, and the mounting frame is provided with an iron sheet matched with the first adsorption block at the lower end.

[0011] Further, the limiting guide rail is provided with a second adsorption block on the inner side, the second adsorption block is internally provided with an electromagnet, and the mounting frame is provided with iron sheets matched with the second adsorption block at the left and right sides.

[0012] Further, the mounting frame is provided with a U-shaped groove at the middle part, the inner wall of the U-shaped groove is provided with anti-skid lines, and the cylindrical mirror is fixedly mounted in the U-shaped groove.

[0013] In the above technical scheme, the hollow motor in the utility model can drive the light spot forming assembly to rotate, so that the light beam passing through the light spot forming assembly can rotate with the rotation of the cylindrical mirror group, the dynamic light spot effect is realized, the rotating elliptical light spot can help to better distribute energy in the cutting process, the cutting efficiency and quality are improved, the processing quality and efficiency can be improved, the electric sliding block can drive the sliding frame to reciprocate along the length direction, the first adsorption block on the sliding frame can be matched with the lower end of the mounting frame, when it is necessary to adjust the position of one of the mounting frames, the electric sliding block drives the sliding frame to move to the lower end of the mounting frame, the first adsorption block is first adsorbed and fixed with the mounting frame, and then the mounting frame is adjusted through the horizontal movement of the sliding frame, so as to realize the function of adjusting the position of the cylindrical mirror, and the shape of the laser beam can be accurately controlled, so that the elliptical light spot is obtained. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further explained in connection with the drawings and examples.

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 is a schematic diagram of the cut structure of the utility model.

[0017] Figure 3 is a schematic diagram of the half cut structure of the utility model.

[0018] Figure 4 is a schematic diagram of the local cut structure of the utility model.

[0019] Figure 5 is a schematic diagram of the three-dimensional structure of the light spot forming assembly of the utility model.

[0020] Figure 6 is a schematic diagram of the cut structure of the light spot forming assembly of the utility model.

[0021] Figure 7 is a schematic diagram of the cross section structure of the light spot forming assembly of the utility model.

[0022] Reference signs: 1, connecting sleeve; 2, hollow motor; 3, light spot forming assembly; 31, outer sleeve; 32, rotating sleeve ring; 33, push air cylinder; 34, adjusting unit; 341, fixed plate; 342, electric sliding block; 343, sliding frame; 3431, first adsorption block; 344, limiting guide rail; 3441, second adsorption block; 345, mounting frame. DETAILED DESCRIPTION

[0023] In order to make the technical personnel in the field better understand the technical scheme of the utility model, the utility model will be further introduced in detail below in conjunction with the drawings.

[0024] Please refer to Figures 1-7 , the utility model embodiment provides a kind of oval light spot laser cutting head, including connecting sleeve 1, it is rectangular structure, connecting sleeve 1 middle part is provided with cylindrical hollow groove;And hollow motor 2, it is installed in the left end inside hollow groove, hollow motor 2 lower end is evenly provided with inserting rod;Light spot forming assembly 3, it is installed in the right end inside hollow groove, light spot forming assembly 3 can be stretched out outward along the length direction of hollow groove, light spot forming assembly 3 left end is connected with hollow motor 2, hollow motor 2 is used to drive light spot forming assembly 3 synchronous rotation, light spot forming assembly 3 inside is evenly installed with cylindrical mirror, the shape of laser beam can be accurately controlled by adjusting the arrangement and parameter of cylindrical mirror, oval light spot can be obtained by driving light spot forming assembly 3 rotation by hollow motor 2.

[0025] In the above technical solution, the left end of the light spot forming assembly 3 is connected with the hollow motor 2 through the insertion rod, the laser beam passes through the middle part of the hollow motor 2 and then enters the inside of the light spot forming assembly 3, and the combination arrangement of the cylindrical mirrors inside the light spot forming assembly 3 can accurately control the shape of the laser beam, and the rotating laser beam can obtain an elliptical light spot.

[0026] In practical applications, this technology can be used in various scenarios. For example, in the field of laser processing, the rotating elliptical light spot can improve the processing quality and efficiency. The elliptical beam refers to the cross section of the beam being elliptical in shape, which helps to better distribute energy during cutting, improving cutting efficiency and quality.

[0027] It should be noted that the hollow motor 2 is a special motor with a hollow center, allowing the laser beam or other optical elements to pass through. By controlling the rotation of the hollow motor 2, the cylindrical mirror group connected to it can be rotated. In this way, the originally stationary elliptical light spot will rotate with the rotation of the cylindrical mirror group, achieving a dynamic light spot effect.

[0028] It should also be noted that the cylindrical mirror is a special optical element with one surface being cylindrical and the other surface being planar or spherical. When the laser beam passes through the cylindrical mirror, it is compressed or expanded in one direction while remaining unchanged in the other direction. By adjusting the arrangement and parameters of the cylindrical mirrors, the shape of the laser beam can be accurately controlled to obtain an elliptical light spot.

[0029] Referring to Figure 5 As shown in the preferred technical solution of the present embodiment, the light spot forming assembly 3 includes an outer sleeve 31, a rotating collar 32, a push cylinder 33, and an adjustment unit 34. The hollow slot inside is installed with the outer sleeve 31, the inner part of the outer sleeve 31 is installed with the rotating collar 32 through bearings at both ends, the rotating collar 32 is provided with an insertion slot matched with the insertion rod, the adjustment unit 34 is installed between the two rotating collars 32, the adjustment unit 34 is uniformly installed with cylindrical mirrors, the connecting sleeve 1 is uniformly provided with mounting slots, the mounting slots are installed with push cylinders 33, and the rear end of the push cylinder 33 is connected with the outer sleeve 31.

[0030] In the above technical solution, the hollow motor 2 is connected with the rotating collar 32 through the insertion rod. When the hollow motor 2 works, the hollow motor 2 can drive the rotating collar 32 to rotate synchronously, the adjustment unit 34 between the rotating collars 32 can adjust the distance between the cylindrical mirrors, so that the shape and size of the light spot can be adjusted to adapt to the use requirements of different working conditions; the push cylinder 33 can drive the adjustment unit 34 to extend from the inside of the connecting sleeve 1, which is convenient for adjusting and replacing the cylindrical mirrors inside the adjustment unit 34.

[0031] Referring toFigures 5-6 As shown in the figure, as the preferred technical solution of the embodiment, the adjusting unit 34 comprises a fixed plate 341, an electric sliding block 342, a sliding frame 343, a limiting guide rail 344 and a mounting frame 345, the fixed plate 341 is installed at the lower end between the two rotating collars 32, a rectangular groove is arranged at the upper middle part of the fixed plate 341, the electric sliding block 342 is installed in the rectangular groove, the sliding frame 343 is installed on the electric sliding block 342, the limiting guide rails 344 are respectively installed on the front and back sides between the two rotating collars 32, and the mounting frames 345 are uniformly installed between the limiting guide rails 344, and the sliding frame 343 is used to drive the mounting frames 345 to adjust the position.

[0032] Referring to Figure 7 As shown in the figure, as the preferred technical solution of the embodiment, a first adsorption block 3431 is arranged at the upper end of the sliding frame 343, an electromagnet is arranged inside the first adsorption block 3431, and an iron sheet cooperating with the first adsorption block 3431 is arranged at the lower end of the mounting frame 345.

[0033] In the above technical solution, the electric sliding block 342 can drive the sliding frame 343 to reciprocate along the length direction, the first adsorption block 3431 on the sliding frame 343 can cooperate with the lower end of the mounting frame 345 respectively, when the position of one of the mounting frames 345 needs to be adjusted, the electric sliding block 342 drives the sliding frame 343 to move to the lower end of the mounting frame 345, the first adsorption block 3431 is first adsorbed and fixed with the mounting frame 345, and then the horizontal movement of the sliding frame 343 is used to adjust the mounting frame 345, so as to realize the function of adjusting the position of the cylindrical mirror.

[0034] Referring to Figure 7 As shown in the figure, as the preferred technical solution of the embodiment, a second adsorption block 3441 is arranged on the inner side of the limiting guide rail 344, an electromagnet is arranged inside the second adsorption block 3441, and iron sheets cooperating with the second adsorption block 3441 are arranged on the left and right sides of the mounting frame 345.

[0035] In the above technical solution, the first adsorption block 3431 and the second adsorption block 3441 are used in cooperation, when the first adsorption block 3431 works to generate adsorption force, the second adsorption block 3441 stops working, so that the mounting frame 345 is separated from the limiting guide rail 344, at this time, the position of the mounting frame 345 can be adjusted, when the position adjustment of the mounting frame 345 is completed, the first adsorption block 3431 stops adsorption, the second adsorption block 3441 generates adsorption force, so that the cylindrical mirror inside the mounting frame 345 can remain stationary, thereby realizing the stable forming of the light spot, which is beneficial to subsequent cutting.

[0036] Continue to refer to Figure 7As shown, as the preferred technical scheme of the embodiment, the middle part of the mounting frame 345 is provided with a U-shaped groove, the inner wall of the U-shaped groove is provided with anti-skid lines, and the cylindrical mirror is fixedly installed in the U-shaped groove.

[0037] In the above technical scheme, the anti-skid lines can effectively increase friction, so that the cylindrical mirror can be effectively fixed inside the U-shaped groove, and when the mounting frame 345 rotates, the cylindrical mirror will not shake or fall off.

[0038] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the present application.

Claims

1. An elliptical spot laser cutting head, characterized by, Include: The connecting sleeve (1) is in a rectangular structure, and a cylindrical hollow groove is arranged in the middle of the connecting sleeve (1); and The hollow motor (2) is installed at the left end inside the hollow groove, and the lower end of the hollow motor (2) is uniformly provided with a plug rod; The light spot shaping assembly (3) is installed at the right end inside the hollow groove, the light spot shaping assembly (3) can be extended outward along the length direction of the hollow groove, the left end of the light spot shaping assembly (3) is connected with the hollow motor (2), the hollow motor (2) is used to drive the light spot shaping assembly (3) to rotate synchronously, and cylindrical lenses are uniformly installed inside the light spot shaping assembly (3), the shape of the laser beam can be accurately controlled by adjusting the arrangement and parameters of the cylindrical lenses, and an elliptical light spot can be obtained by driving the light spot shaping assembly (3) to rotate through the hollow motor (2).

2. The laser cutting head of claim 1, wherein, The light spot shaping assembly (3) includes an outer sleeve (31), a rotating sleeve ring (32), a push air cylinder (33) and an adjusting unit (34), the outer sleeve (31) is installed inside the hollow groove, the rotating sleeve ring (32) is installed inside the outer sleeve (31) through bearings at the front and rear ends, the rotating sleeve ring (32) is provided with a plug groove matched with the plug rod, the adjusting unit (34) is installed between the two rotating sleeve rings (32), the cylindrical lenses are uniformly installed on the adjusting unit (34), the mounting grooves are uniformly arranged on the connecting sleeve (1), the push air cylinder (33) is installed in the mounting groove, and the rear end of the push air cylinder (33) is connected with the outer sleeve (31).

3. A laser cutting head according to claim 2, wherein the focusing optics are arranged to provide a focal point at a distance of 0.5 to 2 mm from the distal end of the focusing optics. The adjusting unit (34) includes a fixed plate (341), an electric sliding block (342), a sliding frame (343), a limiting guide rail (344) and a mounting frame (345), the fixed plate (341) is installed between the lower ends of the two rotating sleeve rings (32), the rectangular groove is arranged at the middle of the upper end of the fixed plate (341), the electric sliding block (342) is installed in the rectangular groove, the sliding frame (343) is installed on the electric sliding block (342), the limiting guide rails (344) are installed on the front and rear sides between the two rotating sleeve rings (32), and the mounting frames (345) are uniformly installed between the limiting guide rails (344), and the sliding frame (343) is used to drive the mounting frame (345) to adjust the displacement.

4. A laser beam delivery system according to claim 3, wherein the beam shaping optics are arranged to provide a beam waist at the focal plane of the focusing optic. The first adsorption block (3431) is arranged on the upper end of the sliding frame (343), the electromagnet is arranged in the first adsorption block (3431), the iron sheet matched with the first adsorption block (3431) is arranged on the lower end of the mounting frame (345).

5. The laser cutting head of claim 3, wherein the focusing lens is a cylindrical lens. The second adsorption block (3441) is arranged on the inner side of the limiting guide rail (344), the electromagnet is arranged in the second adsorption block (3441), and the iron sheet matched with the second adsorption block (3441) is arranged on the left and right sides of the mounting frame (345).

6. The laser cutting head of claim 3, wherein, The mounting frame (345) is provided with a U-shaped groove in the middle, the anti-slip pattern is arranged on the inner wall of the U-shaped groove, and the cylindrical lens is fixedly installed in the U-shaped groove.

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