Complex curve cutting device for polariscope

Abstract

The invention relates to the technical field of complicated curve cutting of polariscopes, in particular to a complicated curve cutting device for polariscopes, which comprises a base, a laser and an adsorption platform, and laser beams emitted by the laser sequentially pass through a static light path and a flying light path to reach the adsorption platform. The static light path comprises a first reflecting mirror, a zoom beam expander and a second reflecting mirror, and the flying light path comprises a third reflecting mirror, a diaphragm and a Bessel cutting head; the machine base is further provided with an X-axis guide rail, a Y-axis guide rail and a Z-axis guide rail. Compared with a traditional method, according to the technical scheme, by arranging the X-axis guide rail, the Y-axis guide rail, the Z-axis guide rail and the rotatable adsorption platform, cutting of complex curves can be achieved, and the diversity and flexibility of cutting shapes are improved; due to the fact that the focal depth of the Bessel cutting head is long, the rapid machining effect is achieved, and the cutting efficiency is greatly improved compared with the prior art. By adjusting the magnification of the variable-magnification beam expander and the size of the diaphragm, the device can be suitable for cutting polariscopes made of different materials.

Description

Technical Field

[0001] The invention relates to the technical field of complex curve cutting of polarizers, and in particular to a complex curve cutting device for polarizers. Background Art

[0002] Laser cutting technology is widely used in cutting rigid materials such as glass and quartz. With the widespread application of glass and other materials in the electronics industry, its cutting requirements are becoming more and more stringent.

[0003] The patent document with patent announcement number: CN220144987U discloses an optical path shaping device for polarizer slicing, which belongs to the field of optical technology. The laser reaches the first reflector after passing through the optical gate, and then reaches the 1 / 2 crystal wavelength plate. After reaching the polarizing cube beam splitter, its P light reaches the second transmitting mirror, and then is transmitted to the variable power beam expander. After passing through the aperture and the conical lens and the plano-convex mirror, its light spot is transformed into annular light. Under the condition of the same beam size, it has a higher focal depth and a smaller divergence angle; finally, after multiple reflections, it enters the focusing mirror and focuses on the inside of the polarizer. By automatically controlling the cutting focus, the laser is cut multiple times inside the polarizer, thereby achieving a perfect processing effect. The cross-sectional crack after cutting can be less than 10 microns; by adjusting the magnification of the variable power beam expander and the aperture size, it can be suitable for cutting polarizers of different materials.

[0004] The polarizer cutting device in the above scheme cannot meet the needs of cutting complex curve shapes due to the limited change of the lens position. The cutting pattern is relatively simple and there is still room for improvement in cutting efficiency. Summary of the invention

[0005] In order to overcome the above technical problems, the purpose of the present invention is to provide a complex curve cutting device for polarizers, which solves the current problem of single pattern and low efficiency when laser cutting polarizers.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A complex curve cutting device for a polarizer, comprising a machine base, a laser and an adsorption platform, wherein the laser beam emitted by the laser sequentially passes through a static optical path and a flying optical path to reach the adsorption platform, and the adsorption platform is used to carry the polarizer to be processed, wherein the static optical path comprises a first reflector, a variable magnification beam expander and a second reflector, and the flying optical path comprises a third reflector, an aperture and a Bessel cutting head;

[0008] The machine base is also provided with an X-axis guide rail, a Y-axis guide rail, and a Z-axis guide rail, wherein the X-axis guide rail is used to realize the movement of the flying light path along the X-axis, the Y-axis guide rail is used to realize the movement of the adsorption platform along the Y-axis, and the Z-axis guide rail is used to realize the movement of the Bessel cutting head along the Z-axis.

[0009] In some embodiments of the present invention, the laser is a CO 2 Laser or fiber laser.

[0010] In some embodiments of the present invention, a beam quality monitoring and feedback system is further included, wherein the beam quality monitoring and feedback system includes a beam analyzer, a data acquisition card, and feedback control software;

[0011] A plurality of beam analyzers are arranged at intervals on the path where the laser beam emitted by the laser reaches the polarizer to be processed. The beam analyzers are used to measure various parameters of the laser beam in real time. The data acquisition card is used to send the collected parameter information to the feedback control software. The feedback control software analyzes and processes the collected data to determine whether the laser beam meets the requirements and sends adjustment instructions to the laser.

[0012] In some embodiments of the present invention, the adsorption platform includes a rotating motor at the bottom and a suction plate at the top, the output end of the rotating motor is detachably connected to the suction plate via a flange, and the rotating motor is installed on the Y-axis guide rail.

[0013] In some embodiments of the present invention, a cavity is formed inside the suction plate, and a plurality of mounting notches are circumferentially spaced apart on the edge of the suction plate, the mounting notches pass through the cavity, a top plate is detachably connected to the mounting notches at the top surface of the suction plate, and a bottom plate is detachably connected to the mounting notches at the bottom surface of the suction plate, and air inlet holes and adsorption holes are respectively provided at the bottom plate and the top plate.

[0014] In some embodiments of the present invention, silicone rings are provided on the edges of the bottom plate and the top plate.

[0015] In some embodiments of the present invention, a partition is provided in the cavity, and the partition divides the cavity into a plurality of spaces that are not connected to each other, and each space corresponds to one of the installation notches.

[0016] Beneficial effects of the present invention:

[0017] Compared with traditional methods, this technical solution can achieve the cutting of complex curves by setting up X, Y, and Z-axis guides and a rotatable adsorption platform, thereby improving the diversity and flexibility of cutting shapes; due to the long focal depth of the Bessel cutting head, it can achieve a rapid processing effect and the cutting efficiency is greatly improved compared with the past; by adjusting the magnification of the zoom beam expander and the aperture size, it can be suitable for cutting polarizers of different materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 is a stereoscopic view of the present invention;

[0020] Figure 2 is a side view of the adsorption platform of the present invention;

[0021] Figure 3 is a three-dimensional view of the adsorption platform of the present invention;

[0022] Figure 4 It is a three-dimensional view of the bottom plate of the present invention.

[0023] In the figure: 1. machine base; 11. X-axis guide rail; 12. Y-axis guide rail; 13. Z-axis guide rail; 2. laser; 3. first reflector; 4. variable-power beam expander; 5. second reflector; 6. third reflector; 7. aperture; 8. Bessel cutting head; 9. adsorption platform; 91. rotating motor; 92. suction plate; 93. flange; 94. mounting notch; 95. top plate; 96. adsorption hole; 97. bottom plate; 98. air inlet. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1 As shown, a complex curve cutting device for polarizers includes a machine base 1, a laser 2 and an adsorption platform 9. The laser beam emitted by the laser 2 sequentially passes through a static optical path and a flying optical path to reach the adsorption platform 9. The adsorption platform 9 is used to carry the polarizer to be processed. The static optical path includes a first reflector 3, a variable magnification beam expander 4 and a second reflector 5. The flying optical path includes a third reflector 6, an aperture 7 and a Bessel cutting head 8.

[0026] The base 1 is also provided with an X-axis guide rail 11, a Y-axis guide rail 12, and a Z-axis guide rail 13, wherein the X-axis guide rail 11 is used to realize the movement of the flying light path along the X-axis, the Y-axis guide rail 12 is used to realize the movement of the adsorption platform 9 along the Y-axis, and the Z-axis guide rail 13 is used to realize the movement of the Bessel cutting head 8 along the Z-axis.

[0027] Before cutting the polarizer, select a suitable laser 2, such as CO 2Laser or fiber laser, and install the laser 2 at the corresponding position on the base 1 to ensure that it can work normally and emit a stable laser beam; then install the static optical path components: install the first reflector 3, the variable magnification beam expander 4 and the second reflector 5 on the base 1 in the order of the optical path, and adjust their angles and positions so that the laser beam can pass smoothly. Ensure that the first reflector 3 can accurately reflect the laser beam emitted by the laser 2 to the variable magnification beam expander 4, and after the variable magnification beam expander 4 properly processes the beam, the second reflector 5 accurately guides the beam to the subsequent flight optical path part. Then install the flight optical path components: install the third reflector 6 on the X-axis guide rail 11 of the base 1 so that it can move flexibly in the X-axis direction; install the aperture 7 at the appropriate position behind the third reflector 6, and then install the Bessel cutting head 8 on the Z-axis guide rail 13 to ensure that their optical paths are accurately connected and the Bessel cutting head 8 can move accurately in the Z-axis direction. The adsorption platform 9 is connected to an air suction device, such as a vacuum pump, so as to form a negative pressure area on the surface of the adsorption platform 9 to fix the polarizer to be processed, avoid displacement of the polarizer during cutting, and improve processing accuracy.

[0028] This technical solution can realize the cutting of complex curves by setting X, Y, Z axis guide rails and a rotatable adsorption platform 9, thereby improving the diversity and flexibility of the cutting shape. In addition, the Bessel cutting head 8 in this solution turns its light spot into annular light. Under the same laser beam size, it has a higher focal depth and a smaller divergence angle. The longer focal depth allows the cutting focus to be kept clear even if there is a certain degree of unevenness on the surface of the polarizer during the cutting process, thereby achieving a fast and perfect processing effect, greatly improving the cutting efficiency, and being able to meet the needs of complex curve cutting shapes, and being suitable for cutting various complex patterns. The Bessel cutting head 8 is installed on the cutting Z axis that can be moved up and down, and can be automatically moved to the cutting focus through the software, further improving the accuracy and efficiency of the cutting; and by adjusting the 4x magnification of the variable magnification beam expander and the size of the aperture 7, it can be suitable for cutting polarizers of different materials. The aperture 7 effectively filters stray light in the light path, making the cutting effect better.

[0029] It should be noted that laser 2 provides a high energy density laser source for cutting, which is the basis for achieving cutting. A suitable laser 2 can ensure that there is enough energy to melt or vaporize the polarizer material to start the cutting process. Its stability and accuracy help to ensure the consistency and repeatability of the cutting process and improve the cutting quality.

[0030] In some embodiments of the present invention, a beam quality monitoring and feedback system is also included, and the beam quality monitoring and feedback system includes a beam analyzer, a data acquisition card, and feedback control software;

[0031] A plurality of beam analyzers are arranged at intervals on the path where the laser beam emitted by laser 2 reaches the polarizer to be processed. The beam analyzers are used to measure various parameters of the laser beam in real time. The data acquisition card is used to send the acquired parameter information to the feedback control software. The feedback control software analyzes and processes the acquired data to determine whether the laser beam meets the requirements and sends adjustment instructions to laser 2.

[0032] Install multiple beam analyzers at appropriate intervals on the path where the laser beam emitted by laser 2 reaches the polarizer to be processed, ensuring that they can accurately measure the various parameters of the laser beam. Connect the data acquisition card to the beam analyzer, and install the feedback control software to the corresponding control device, such as a computer, to establish a communication connection between the data acquisition card and the feedback control software so that the system can work normally.

[0033] The significance of the beam quality monitoring and feedback system is to monitor the quality of the laser beam in real time to ensure that the laser is always in the best condition during the cutting process. During the cutting process, the quality of the laser beam may change due to factors such as aging of the laser 2, contamination of optical components, or adjustment of the optical path. Through the beam quality monitoring and feedback system, these changes can be discovered in time and corresponding adjustment measures can be taken, such as adjusting the power output of the laser 2, cleaning or replacing optical components, fine-tuning the optical path, etc., to ensure that the energy distribution of the laser beam is uniform, the spot shape is regular, and the divergence angle is appropriate, thereby improving cutting accuracy and efficiency.

[0034] In some embodiments of the present invention, Figure 2 , Figure 3 , Figure 4 As shown, the adsorption platform 9 includes a rotating motor 91 at the bottom and a suction plate 92 at the top. The output end of the rotating motor 91 is detachably connected to the suction plate 92 through a flange 93. The rotating motor 91 is installed on the Y-axis guide rail 12. The rotating motor 91 can drive the suction plate 92 to rotate to achieve curve cutting in different directions.

[0035] In some embodiments of the present invention, a cavity is formed inside the suction plate 92, and a plurality of mounting notches 94 are circumferentially spaced apart on the edge of the suction plate 92, and the mounting notches 94 penetrate the cavity. A top plate 95 is detachably connected to the mounting notches 94 on the top surface of the suction plate 92, and a bottom plate 97 is detachably connected to the mounting notches 94 on the bottom surface of the suction plate 92, and an air inlet 98 and an adsorption hole 96 are respectively formed on the bottom plate 97 and the top plate 95. By connecting the vacuum pump device to the air inlet 98, negative pressure is generated in the adsorption hole 96 area, and the polarizer is firmly adsorbed to prevent it from moving during the cutting process.

[0036] In some embodiments of the present invention, silicone rings are provided at the edges of the bottom plate 97 and the top plate 95 to enhance the sealing performance.

[0037] In some embodiments of the present invention, the sizes and positions of the adsorption holes 96 on the surface of the top plate 95 are different according to the sizes of the polarizers to be adsorbed. The top plate 95 can be flexibly replaced for different polarizers to achieve the best adsorption effect.

[0038] In some embodiments of the present invention, a partition is provided in the cavity, which divides the cavity into a plurality of unconnected spaces, each space corresponding to an installation notch 94. The smaller space can generate a greater suction force at the top plate 95 of each area, and the adsorption force on the polarizer is stronger.

[0039] When installing the adsorption platform 9: install the rotating motor 91 at the Y-axis guide rail 12, and then detachably connect the suction plate 92 to the output end of the rotating motor 91 through the flange 93. Check the integrity of the suction plate 92 to ensure that its internal cavity, installation notch 94, air inlet 98, adsorption hole 96 and other structures are normal. Install the top plate 95 and the bottom plate 97 at the installation notch 94, and ensure that the silicone ring is installed in place to ensure the sealing of the adsorption platform 9.

[0040] During cutting, according to the preset complex curve cutting pattern, the corresponding cutting path program is input into the control system, such as a computer numerical control system. The program will control the movement of the adsorption platform 9 in the Y-axis direction, the movement of the Bessel cutting head 8 in the Z-axis direction, and the movement of the flying light path in the X-axis direction, so as to realize the coordinated movement between the three and complete the cutting of the complex curve. Start the laser 2 and emit the laser beam. The laser beam passes through the static optical path (the first reflector 3, the variable magnification beam expander 4, the second reflector 5) and the flying optical path (the third reflector 6, the aperture 7, the Bessel cutting head 8) in sequence, and finally focuses on the surface of the polarizer. During the cutting process, the beam quality monitoring and feedback system continuously monitors the laser beam parameters. If it is found that the parameter changes exceed the allowable range, the adjustment instruction is sent to the laser 2 in time to ensure that the laser beam always maintains good cutting performance.

[0041] During the cutting process, the rotary motor 91 can be controlled to drive the suction plate 92 and the polarizer to rotate a certain angle as needed to achieve curve cutting in different directions. For example, when a circular or arc curve needs to be cut, a high-precision circular or arc edge can be cut by precisely controlling the speed and rotation angle of the rotary motor 91, combined with the movement of the suction platform 9 and the Bessel cutting head 8.

[0042] After the cutting is completed, turn off the laser 2 and stop emitting the laser beam. Stop the adsorption function of the adsorption platform 9 and carefully remove the cut polarizer from the suction plate 92 to avoid damaging the polarizer. Check the quality of the polarizer after cutting and observe whether the cutting edge is smooth and whether there are cracks or other defects. If it is found that the cutting quality does not meet the requirements, analyze the reasons, such as improper laser parameter settings, inaccurate optical path adjustment, stability problems of the adsorption platform 9, etc., and make corresponding adjustments and improvements to the equipment, and then re-perform the cutting operation.

[0043] Finally, clean and maintain the equipment, clean the debris and dust on the adsorption platform 9, check whether the surface of optical components such as reflectors and lenses is contaminated or damaged, and clean or replace them in time if necessary. At the same time, check the operating conditions of mechanical components such as guide rails and motors to ensure that the equipment is in good working condition and ready for the next cutting operation.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A complex curve cutting device for polarizer, comprising a machine base, a laser and an adsorption platform, characterized in that: The laser beam emitted by the laser sequentially passes through a static optical path and a flying optical path to reach the adsorption platform, and the adsorption platform is used to carry the polarizer to be processed. The static optical path includes a first reflector, a variable magnification beam expander and a second reflector, and the flying optical path includes a third reflector, an aperture and a Bessel cutting head. The machine base is also provided with an X-axis guide rail, a Y-axis guide rail, and a Z-axis guide rail, wherein the X-axis guide rail is used to realize the movement of the flying light path along the X-axis, the Y-axis guide rail is used to realize the movement of the adsorption platform along the Y-axis, and the Z-axis guide rail is used to realize the movement of the Bessel cutting head along the Z-axis.

2. A complex curve cutting device for polarizer according to claim 1, characterized in that: The laser is a CO2 laser or a fiber laser.

3. A complex curve cutting device for polarizer according to claim 1, characterized in that: It also includes a beam quality monitoring and feedback system, which includes a beam analyzer, a data acquisition card, and feedback control software; A plurality of beam analyzers are arranged at intervals on the path where the laser beam emitted by the laser reaches the polarizer to be processed. The beam analyzers are used to measure various parameters of the laser beam in real time. The data acquisition card is used to send the collected parameter information to the feedback control software. The feedback control software analyzes and processes the collected data to determine whether the laser beam meets the requirements and sends adjustment instructions to the laser.

4. The complex curve cutting device for polarizer according to claim 1, characterized in that: The adsorption platform comprises a rotating motor at the bottom and a suction plate at the top. The output end of the rotating motor is detachably connected to the suction plate via a flange, and the rotating motor is installed at the Y-axis guide rail.

5. A complex curve cutting device for polarizer according to claim 4, characterized in that: A cavity is formed inside the suction plate, and a plurality of mounting notches are circumferentially spaced apart at the edge of the suction plate, the mounting notches penetrate the cavity, a top plate is detachably connected to the mounting notches at the top surface of the suction plate, and a bottom plate is detachably connected to the mounting notches at the bottom surface of the suction plate, and air inlet holes and adsorption holes are respectively provided at the bottom plate and the top plate.

6. A complex curve cutting device for polarizer according to claim 5, characterized in that: The edges of the bottom plate and the top plate are both provided with silicone rings.

7. A complex curve cutting device for polarizer according to claim 5, characterized in that: A partition is arranged in the cavity, and the partition divides the cavity into a plurality of spaces which are not connected to each other, and each space corresponds to one of the installation notches.

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