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CN-121972829-A - Carbon dioxide laser sectional smooth splicing and trimming method for large-size glass explosion-proof membrane

CN121972829ACN 121972829 ACN121972829 ACN 121972829ACN-121972829-A

Abstract

The invention belongs to the technical field of large-size glass processing, and particularly relates to a carbon dioxide laser sectional smooth splicing and trimming method for a large-size glass rupture membrane. The technical scheme includes that the carbon dioxide laser sectional smooth splicing and trimming method for the large-size glass rupture membrane comprises the following steps of S1, logical partitioning and global calibration, S2, super-amplitude lamination, S3, partition contour collection and fusion, S4, sectional path planning, S5, sectional smooth cutting and S6, and global quality inspection. The invention provides a carbon dioxide laser sectional smooth splicing and trimming method for a large-size glass rupture membrane, which breaks through the limit of CO 2 laser galvanometer travel, realizes sectional cutting and seamless splicing, and ensures that the steps of the whole membrane edge of the large-size glass are uniform and no splicing trace exists.

Inventors

  • LIANG XIAOXIANG
  • LIU ZHENGDE
  • LIU MIN
  • Yong Zhenning
  • YE CHANGMING

Assignees

  • 四川虹基光玻新材料科技有限公司

Dates

Publication Date
20260505
Application Date
20260402

Claims (10)

  1. 1. A large-size glass rupture disk carbon dioxide laser sectional smooth splicing and trimming method is characterized by comprising the following steps: The method comprises the steps of S1, logically partitioning and globally calibrating, namely dividing a large-size glass cover plate (1) into a plurality of cutting subareas (2) according to the effective processing stroke of a CO 2 laser galvanometer, calibrating high-precision coordinates of the cutting subareas (2) through a double-view visual detection module, and establishing a unified global splicing coordinate system (4); S2, ultra-amplitude lamination, namely, laminating the large-size whole anti-explosion film with a glass cover plate, and controlling the anti-explosion film to form uniform overhanging reserved allowance in the whole glass area; S3, collecting and fusing the regional outlines, namely cutting the subregions (2) one by the vision detection module to collect the actual outline (5) data of the glass, carrying out coordinate fusion through a global splicing coordinate system (4) to generate a complete large-size real global outline model of the glass, and finishing global laminating offset compensation; S4, segment path planning, namely generating a segment type CO 2 laser cutting path (6) based on the fused global outline model, and setting a smooth transition section (3) with the length of 8-15 mm at the junction position of the adjacent cutting subareas (2); s5, sectionally and smoothly cutting, namely, the CO 2 laser processing module cuts the subareas (2) one by one, and linear gradual change adjustment is carried out on laser power and scanning speed in the smooth transition section (3); and S6, detecting the whole domain quality, namely detecting the flatness and the step size of the whole domain membrane edge of the large-size glass through visual detection equipment after cutting is completed.
  2. 2. The method for trimming large-size glass rupture membrane by carbon dioxide laser segmentation smooth splicing is characterized in that in the step S1, the effective processing stroke of a logic partition and a global calibration CO 2 laser galvanometer is 600mm multiplied by 600mm, a large-size glass cover plate (1) with the size of 1200mm multiplied by 800mm is divided into 4 cutting subareas (2), the subareas have the size of 600mm multiplied by 600mm, and adjacent subareas are overlapped by 10mm.
  3. 3. The large-size glass rupture membrane carbon dioxide laser sectional smooth splicing trimming method is characterized in that in the step S1, a double-500-ten-thousand-pixel vision camera is adopted for global calibration, a high-precision calibration plate with the precision of +/-0.001 mm is used for establishing a unified global splicing coordinate system (4), the coordinate calibration precision of each sub-region is +/-0.005 mm, and the global coordinate fusion error is less than or equal to +/-0.01 mm.
  4. 4. The carbon dioxide laser sectional smooth splicing and trimming method for the large-size glass explosion-proof membrane is characterized in that in the step S2, the TPU explosion-proof membrane with the thickness of 0.125mm, which is 1202mm multiplied by 1002mm, is adopted for super-width lamination, and is laminated with the large-size glass, the lamination pressure is 0.4MPa, the lamination temperature is 40 ℃, the dwell time is 15S, the single-side overhanging allowance of the explosion-proof membrane is controlled to be 2.0mm, and the whole area is free of bubbles, wrinkles and local leakage.
  5. 5. The method for smoothly splicing and trimming the large-size glass rupture membrane by carbon dioxide laser segments is characterized in that in the step S3, a 3D line laser vision camera is adopted for regional contour acquisition and fusion, glass actual contour (5) data are acquired by cutting subregions (2) one by one, the acquisition precision is +/-0.003 mm, edge coordinates, corner curvature and dimensional deviation of each subregion are extracted, coordinate fusion is carried out through a global splicing coordinate system (4), calibration errors among subregions are eliminated, a complete glass real global contour model is generated, and global laminating offset is calculated to complete global path compensation.
  6. 6. The method for trimming large-size glass rupture membrane by carbon dioxide laser sectional smooth splicing is characterized in that in the global lamination offset, the X/Y axis translation deviation is less than or equal to +/-0.01 mm, and the rotation angle deviation is less than or equal to +/-0.01 degrees.
  7. 7. The method for trimming large-size glass rupture membrane by carbon dioxide laser sectional smooth splicing is characterized in that in the step S4, sectional path planning is based on a global contour model, a sectional cutting path (6) is generated, the cutting path (6) is offset inwards by 0.08mm safety margin based on a glass actual contour (5), a10 mm smooth transition section (3) is arranged at the boundary position of adjacent cutting subareas (2), and circular arc interpolation is adopted for the path in the transition section.
  8. 8. The method for trimming the large-size glass rupture membrane by means of carbon dioxide laser piecewise smooth splicing is characterized in that in the step S5, a 50W radio frequency excitation CO 2 laser is adopted for piecewise smooth cutting, a triaxial gantry moving platform is matched, cutting parameters of all subareas are initially set to be 16W, cutting speed is 300mm/S, defocus amount is +0.4mm, pulse frequency is 20kHz, coaxial blowing pressure is 0.2Mpa, laser power is smoothly transited from 16W to initial power of adjacent subareas according to a linear gradual change curve in a smooth transition section (3), cutting speed is smoothly transited from 300mm/S to initial speed of adjacent subareas according to a linear gradual change curve, parameter gradual change is free from mutation, and negative pressure dust removal is synchronously started in the cutting process.
  9. 9. The method for trimming the large-size glass rupture membrane by carbon dioxide laser piecewise smooth splicing is characterized in that when laser power is smoothly transited from 16W to the initial power of an adjacent subarea according to a linear gradual change curve, the deviation is less than or equal to 0.5W, when the cutting speed is smoothly transited from 300mm/s to the initial speed of the adjacent subarea according to the linear gradual change curve, the deviation is less than or equal to 10mm/s, and when negative pressure dust removal is synchronously started in the cutting process, the air quantity is 600L/min.
  10. 10. The method for trimming the large-size glass rupture membrane by carbon dioxide laser sectional smooth splicing is characterized in that in the step S6, full-automatic visual detection equipment with the detection range of 2000mm multiplied by 1500mm is adopted for detecting 100% of the whole membrane edge of the large-size glass, detection items comprise step size, edge flatness, splicing trace and heat affected zone width, the detection precision is +/-0.003 mm, the whole step size is controlled to be 0.08-0.13 mm, the edge Ji Pingdu is less than or equal to +/-0.01 mm, no splicing trace is visible to naked eyes, and the heat affected zone is less than or equal to 0.05mm.

Description

Carbon dioxide laser sectional smooth splicing and trimming method for large-size glass explosion-proof membrane Technical Field The invention belongs to the technical field of large-size glass processing, and particularly relates to a carbon dioxide laser sectional smooth splicing and trimming method for a large-size glass rupture membrane. Background The prior art aims at large-size glass products with side length exceeding 600mm, such as vehicle-mounted screen connection, oversized industrial control glass and the like, is limited by the effective travel of a CO 2 laser galvanometer, shan Zhenjing can not realize global disposable cutting, and the problem of positioning precision attenuation can occur when the integral motion platform is adopted for cutting. The existing segmentation cutting technology does not design special partition calibration and smooth transition logic aiming at CO 2 laser, obvious splicing marks, abrupt step changes, incoherent edges and the like are easy to occur after segmentation cutting, and the problem of uneven steps is more prominent due to larger tolerance of large-size glass. Disclosure of Invention In order to solve the problems in the prior art, the invention aims to provide a carbon dioxide laser sectional smooth splicing and trimming method for a large-size glass rupture membrane, which breaks through the limit of the stroke of a CO 2 laser galvanometer, realizes sectional cutting and seamless splicing, and ensures that the steps at the whole membrane edge of the large-size glass are uniform and have no splicing marks. The technical scheme adopted by the invention is as follows: A large-size glass rupture disk carbon dioxide laser sectional smooth splicing trimming method comprises the following steps: S1, logically partitioning and globally calibrating, namely dividing a large-size glass cover plate into a plurality of cutting subareas according to the effective processing stroke of a CO 2 laser galvanometer, calibrating high-precision coordinates of all the cutting subareas through a double-view visual detection module, and establishing a unified global splicing coordinate system; S2, ultra-amplitude lamination, namely, laminating the large-size whole anti-explosion film with a glass cover plate, and controlling the anti-explosion film to form uniform overhanging reserved allowance in the whole glass area; S3, collecting and fusing the regional contour, namely cutting the subregions one by the visual detection module to collect the actual contour data of the glass, carrying out coordinate fusion through a global splicing coordinate system to generate a complete large-size glass actual global contour model, and simultaneously completing global laminating offset compensation; s4, planning a segmented path, namely generating a segmented CO 2 laser cutting path based on the fused global outline model, and setting a smooth transition section of 8-15 mm at the junction position of the adjacent cutting subareas; s5, sectionally and smoothly cutting, namely, the CO 2 laser processing module cuts the subareas one by one, and linear gradual change adjustment is carried out on laser power and scanning speed in a smooth transition section; and S6, detecting the whole domain quality, namely detecting the flatness and the step size of the whole domain membrane edge of the large-size glass through visual detection equipment after cutting is completed. As a preferable scheme of the invention, in the step S1, the effective processing stroke of the logic subarea and the global calibration CO 2 laser galvanometer is 600mm multiplied by 600mm, a large-size glass cover plate of 1200mm multiplied by 800mm is divided into 4 cutting subareas, the subareas have the size of 600mm multiplied by 600mm, and the adjacent subareas are overlapped by 10mm. As a preferable scheme of the invention, in the step S1, a double-500-ten-thousand-pixel vision camera is adopted for global calibration, a high-precision calibration plate with the precision of +/-0.001 mm is used for establishing a unified global spliced coordinate system, the coordinate calibration precision of each sub-region is +/-0.005 mm, and the global coordinate fusion error is less than or equal to +/-0.01 mm. As a preferable scheme of the invention, in the step S2, the TPU explosion-proof film with the thickness of 0.125mm and the whole width of 1202mm multiplied by 1002mm is adopted for super-width lamination, and is laminated with large-size glass, the lamination pressure is 0.4MPa, the lamination temperature is 40 ℃, the pressure maintaining time is 15S, the single-side overhanging allowance of the explosion-proof film is controlled to be 2.0mm, and the whole area is free from bubbles, wrinkles and local leakage. In the preferred scheme of the invention, in the step S3, a 3D line laser vision camera is adopted for regional contour acquisition and fusion, glass actual contour data are acquired by cutting sub-regions one by one, the a