Complex curve cutting device for polariscope

Abstract

The utility model 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 utility model relates to polarizing mirror complex curve cutting technical field, specifically related to a kind of complex curve cutting device for polarizing mirror. BACKGROUND

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

[0003] The patent document with patent announcement number CN220144987U discloses a light path shaping device for polarizing mirror scribing, belonging to the field of optical technology. The laser passes through the light shutter, reaches the first reflector, then reaches the 1 / 2 crystal wavelength plate, and reaches the polarizing cube beam splitter. The P light reaches the second emission mirror, and then is transmitted to the variable magnification beam expander. After passing through the diaphragm, the conical lens and the plano-convex mirror, the light spot becomes a ring-shaped light. Under the same beam size condition, there is higher focal depth and smaller divergence angle. Finally, after passing through multiple reflections, it enters the focusing mirror and focuses inside the polarizing mirror. By automatically controlling the cutting focal point, the laser performs multiple cutting inside the polarizing mirror, thereby achieving perfect processing effect. The cross-sectional crack after cutting can be less than 10 microns. By adjusting the magnification of the variable magnification beam expander and the size of the diaphragm, it can be suitable for cutting polarizing mirrors of different materials.

[0004] The polarizing sheet cutting device in the above-mentioned scheme cannot meet the demand of complex curve cutting shape due to the limited change of lens position. The cutting pattern is relatively single, and there is room for improvement in cutting efficiency. UTILITY MODEL CONTENT

[0005] In order to overcome the above technical problems, the purpose of the utility model is to provide a complex curve cutting device for polarizing mirror, which solves the problems of single pattern and low efficiency in laser cutting of polarizing mirror.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] A complex curve cutting device for polarizing mirror, comprising a machine base, a laser and an adsorption platform. The laser beam emitted by the laser passes through a static light path and a flight light path in turn to reach the adsorption platform. The adsorption platform is used to carry the polarizing mirror to be processed. The static light path comprises a first reflector, a variable magnification beam expander and a second reflector. The flight light path comprises a third reflector, a diaphragm and a Bessel cutting head.

[0008] The base is further 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 for realizing movement of a flying light path along the X-axis, the Y-axis guide rail is used for realizing movement of an adsorption platform along the Y-axis, and the Z-axis guide rail is used for realizing movement of the Bezier cutting head along the Z-axis.

[0009] In some embodiments of the present application, the laser is a CO2 laser or a fiber laser.

[0010] In some embodiments of the present application, a light beam quality monitoring and feedback system is further included, which comprises a light beam analyzer, a data acquisition card and feedback control software.

[0011] A plurality of light beam analyzers are arranged at intervals on the path of the laser beam emitted by the laser to the polaroid to be processed, and the light beam analyzers are used for measuring various parameters of the laser beam in real time; the data acquisition card is used for sending 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 application, the adsorption platform comprises a rotary motor at the bottom and an adsorption plate at the top, the output end of the rotary motor is detachably connected with the adsorption plate through a flange, and the rotary motor is installed at the Y-axis guide rail.

[0013] In some embodiments of the present application, a cavity is formed in the adsorption plate, a plurality of mounting notches are circumferentially arranged at the edge of the adsorption plate, the mounting notches penetrate the cavity, a top plate is detachably connected with the top surface of the adsorption plate at the mounting notches, and a bottom plate is detachably connected with the bottom surface of the adsorption plate at the mounting notches, air inlet holes and adsorption holes are respectively arranged at the bottom plate and the top plate.

[0014] In some embodiments of the present application, the edge of the bottom plate and the edge of the top plate are both provided with a silica gel ring.

[0015] In some embodiments of the present application, a partition plate is arranged in the cavity, and the partition plate divides the cavity into a plurality of spaces that are not communicated with each other, and each space corresponds to one of the mounting notches.

[0016] The present application has the following beneficial effects:

[0017] Compared with the traditional method, the technical scheme can realize cutting of a complex curve, improve the diversity and flexibility of the cutting shape, and has the following advantages: the focal depth of the Bezier cutting head is relatively long, so that the effect of rapid processing is achieved, the cutting efficiency is greatly improved compared with the past, and the polaroid of different materials can be cut by adjusting the magnification of the variable magnification beam expander and the size of the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 It is a three-dimensional view of the utility model;

[0020] Figure 2 It is a side view of the adsorption platform in the utility model;

[0021] Figure 3 It is a three-dimensional view of the adsorption platform in the utility model;

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

[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 magnification 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 embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0025] like Figure 1 As shown, a complex curve cutting device for polarizers includes a 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 zoom 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, a suitable laser 2, such as a CO2 laser or a fiber laser, is selected and installed on the machine base 1 in the corresponding position to ensure that it can work normally and emit a stable laser beam; then the static optical path components are installed: the first mirror 3, the variable expansion mirror 4 and the second mirror 5 are installed in sequence according to the optical path order on the machine base 1, and their angles and positions are adjusted so that the laser beam can pass smoothly. Ensure that the first mirror 3 can accurately reflect the laser beam emitted by the laser 2 to the variable expansion mirror 4, which properly processes the light beam, and then the second mirror 5 accurately guides the light beam to the subsequent flying optical path part. Then install the flying optical path components: install the third mirror 6 on the X-axis guide rail 11 of the machine base 1 so that it can move flexibly in the X-axis direction; install the light diaphragm 7 at a suitable position behind the third mirror 6, and then install the Bézier cutting head 8 on the Z-axis guide rail 13 to ensure that their optical path connection is accurate and the Bézier cutting head 8 can move accurately in the Z-axis direction. The suction platform 9 is connected to a suction device such as a vacuum pump to form a negative pressure area on the surface of the suction platform 9 to fix the polarizer to be processed, avoid displacement of the polarizer during cutting, and improve processing accuracy.

[0028] The technical solution can realize cutting of complex curves by setting the X, Y and Z axis guide rails and the rotatable suction platform 9, and improves the diversity and flexibility of cutting shapes. The Bézier cutting head 8 in the present solution makes the light spot into a ring-shaped light, which has higher focal depth and smaller divergence angle under the same laser beam size, and the longer focal depth can maintain a clear cutting focal point even if there is a certain unevenness on the surface of the polarizer during cutting, thereby realizing fast and perfect processing effect and greatly improving the cutting efficiency, and meeting the needs of cutting complex curve shapes and being suitable for cutting various complex patterns. The Bézier cutting head 8 is installed on the cutting Z-axis which can move up and down, and can be automatically moved to the cutting focal point through software, further improving the accuracy and efficiency of cutting; and by adjusting the magnification of the variable expansion mirror 4 and the size of the light diaphragm 7, it can be suitable for cutting polarizers of different materials. The light diaphragm 7 effectively filters stray light in the optical path, making the cutting effect better.

[0029] It should be noted that the laser 2 provides a high-energy-density laser source for cutting, which is the basis for realizing cutting. A suitable laser 2 can ensure sufficient energy to melt or vaporize the polarizer material, thereby starting the cutting process, and 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 application, a beam quality monitoring and feedback system is also included, which comprises a beam analyzer, a data acquisition card and feedback control software.

[0031] A plurality of beam analyzers are arranged at intervals on the path of the laser beam emitted by the laser 2 to the polarizing lens to be processed, and the beam analyzers are used to measure various parameters of the laser beam in real time.

[0032] A plurality of beam analyzers are arranged at intervals on the path of the laser beam emitted by the laser 2 to the polarizing lens to be processed, and the beam analyzers are used to measure various parameters of the laser beam in real time.

[0033] The significance of the beam quality monitoring and feedback system is to monitor the quality of the laser beam in real time and ensure that the laser is always in the best state during cutting. During cutting, the quality of the laser beam may change due to factors such as aging of the laser 2, contamination of optical elements, or adjustment of the optical path. Through the beam quality monitoring and feedback system, these changes can be detected in time, and appropriate adjustment measures can be taken, such as adjusting the power output of the laser 2, cleaning or replacing the optical elements, 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 the cutting accuracy and efficiency.

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

[0035] In some embodiments of the present application, a cavity is formed in the interior of the adsorption plate 92. A plurality of mounting notches 94 are circumferentially arranged at the edge of the adsorption plate 92 and penetrate the cavity. A top plate 95 is detachably connected to the top surface of the adsorption plate 92 at the mounting notches 94. A bottom plate 97 is detachably connected to the bottom surface of the adsorption plate 92 at the mounting notches 94. The bottom plate 97 and the top plate 95 are respectively provided with air inlet holes 98 and adsorption holes 96. By connecting the vacuum pump equipment to the air inlet holes 98, a negative pressure is generated in the adsorption hole 96 area, firmly adsorbing the polarizing lens and preventing it from moving during cutting.

[0036] In some embodiments of the present application, the edges of the bottom plate 97 and the top plate 95 are provided with silica gel rings to enhance the sealing performance.

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

[0038] In some embodiments of the present application, a partition is arranged in the cavity, which divides the cavity into multiple spaces that are not connected to each other, and each space corresponds to an installation gap 94. Smaller spaces can generate 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 rotary motor 91 at the Y-axis guide rail 12, and then detachably connect the suction plate 92 to the output end of the rotary motor 91 through the flange 93. Check the integrity of the suction plate 92 to ensure that the internal cavity, installation gap 94, air inlet hole 98, adsorption hole 96 and other structures are normal. Install the top plate 95 and the bottom plate 97 at the installation gap 94 respectively, and ensure that the silicone ring is installed in place to ensure the sealing of the adsorption platform 9.

[0040] When cutting, according to the preset complex curve cutting pattern, input the corresponding cutting path program in 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, to realize the coordinated motion among the three, so as to complete the cutting of complex curves. Start the laser 2 to emit a laser beam. The laser beam passes through the static light path (first mirror 3, variable expansion beam mirror 4, second mirror 5) and flying light path (third mirror 6, diaphragm 7, Bessel cutting head 8) in turn, and is finally focused on the surface of the polarizer. In the cutting process, the beam quality monitoring and feedback system continuously monitors the parameters of the laser beam, and if it is found that the parameter changes exceed the allowed range, timely adjustment instructions are sent to the laser 2 to ensure that the laser beam always maintains good cutting performance.

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

[0042] After the cutting is completed, the laser 2 is turned off, and the laser beam emission is stopped. The suction function of the suction platform 9 is stopped, and the cut polarizer is carefully taken off from the suction plate 92 to avoid damage to the polarizer. The quality of the cut polarizer is checked to observe whether the cutting edge is smooth, whether there are cracks or other defects. If the cutting quality is found to be not up to the requirements, the reasons are analyzed, such as improper laser parameter setting, inaccurate optical path adjustment, stability problems of the suction platform 9, etc., and the equipment is adjusted and improved accordingly, and then the cutting operation is performed again.

[0043] Finally, the equipment is cleaned and maintained, the sundries and dust on the suction platform 9 are cleaned, and whether the surfaces of the optical elements such as mirrors and lenses are contaminated or damaged is checked, and if necessary, the cleaning or replacement is performed in time. At the same time, the running conditions of the guide rails, motors and other mechanical components are checked to ensure that the equipment is in good working condition and is ready for the next cutting operation.

[0044] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description 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 is only an example and description of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the scope of the present application or exceed the scope defined by the present claims, which shall belong to the protection scope of the present application.

Claims

1. A complex curve cutting device for polarizers, 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, which is used to carry the polarizer to be processed. The static optical path includes a first reflector, a zoom 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. The complex curve cutting device for polarizer according to claim 1, characterized in that: Also included is 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, determines 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 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 through a flange, and the rotating motor is installed on the Y-axis guide rail.

5. The 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 along the edge of the suction plate. The mounting notches penetrate the cavity, and 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. Air inlet holes and adsorption holes are respectively provided on the bottom plate and the top plate.

6. The 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. The complex curve cutting device for polarizer according to claim 5, characterized in that: 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.

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