Online laser degumming method for roller cutter

Abstract

According to the online laser glue removing method for the roller cutter, the corresponding glue area on the surface of the material area is accurately removed through laser, the glue removing efficiency is improved, and the machining precision is improved. A material belt is subjected to continuous roller cutting through a roller cutter of a roller cutter machine to obtain corresponding material pieces, the material pieces are pressed and attached to be flat along a pressing roller of the roller cutter machine and conveyed backwards through a bottom film, and the material pieces which are pressed and attached to be flat are subjected to redundant material area removing operation through laser emitted by a laser device. Laser emitted by a laser head of the laser device is quickly and flatly scanned and moved relative to a redundant material area of the material sheet to remove a glue layer in the corresponding area; a visual system is integrated at the front end of the laser device, the visual system scans the position of a material piece cut by a roller, the position of the material piece obtained through scanning is accurately transmitted to a corresponding coordinate system of the laser device, the laser device calculates according to the position of the material piece to obtain an adhesive layer area needing to be removed of the corresponding material piece, and the material piece is conveyed to the position under the laser device. And the laser drives the laser to carry out flat sweeping removal operation on the corresponding adhesive layer area.

Description

Technical Field

[0001] This invention relates to the technical field of roller cutter die manufacturing, specifically to an online laser degumming method for roller cutters. Background Technology

[0002] In die-cutting production, after the roll material is arranged along the production line, a roller cutter performs a roller cut on the surface of the roll material to obtain the corresponding graphic shape. However, in actual processing, after the roller cutter cuts the continuously rolled adhesive layer to obtain the sheet adhesive layer pattern, there are still areas in the adhesive layer pattern area that need to be partially removed. Existing traditional adhesive removal methods, such as blade scraping, have uneven edges that can easily scratch the material. Chemical adhesive removal, for example, can cause pollution and residue problems. In addition, when it is necessary to perform local adhesive removal on flexible materials or in high-precision scenarios, existing blade adhesive removal and chemical adhesive removal cannot ensure that the flexible material is in a flat and unfolded state. Therefore, there is an urgent need to develop a method that can reliably remove adhesive from local areas of flexible materials. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an online laser degumming method using a roller cutter. This method precisely removes the corresponding adhesive areas from the surface of the material area using a laser, thereby improving degumming efficiency and processing accuracy.

[0004] A roller cutter online laser adhesive removal method is characterized in that: the strip is continuously cut by the roller cutter of the roller cutter to obtain the corresponding sheet, the sheet is pressed flat along the pressure roller of the roller cutter and conveyed to the rear through the bottom film, and the pressed flat sheet is subjected to the laser emitted by the laser to remove excess material area. The laser emitted by the laser head of the laser rapidly and horizontally moves relative to the excess material area of ​​the sheet to remove the adhesive layer in the corresponding area. The laser has a vision system integrated at the front end. The vision system scans the position of the cut sheet and accurately transmits the position of the sheet to the corresponding coordinate system of the laser. The laser calculates the area of ​​adhesive layer that needs to be removed based on the position of the sheet. After the sheet is transported directly below the laser, the laser drives the laser to perform a flat sweeping removal operation on the corresponding area of ​​adhesive layer.

[0005] Its further features are: The vision system specifically consists of a CCD lens placed in front of the laser via a connecting frame. The CCD lens completely covers the width of the base film and the entire surface area of ​​the material sheet, ensuring accurate and reliable dimensional accuracy. The laser emitted by the laser is perpendicular to the material sheet, ensuring stable and reliable removal. When the adhesive layer is an organic adhesive layer, the laser emitted by the laser is a CO2 laser, which removes the adhesive layer through a thermal effect. The adhesive layer is a heat-resistant adhesive or an ultra-thin material, and the laser emitted by the laser is an ultraviolet laser or a picosecond / femtosecond laser, wherein the ultraviolet laser is a 355nm laser, and the picosecond / femtosecond laser is an ultra-short pulse, high-precision laser. The laser spot diameter of the laser is 10μm to 100μm, which is selected according to the area of ​​the excess material zone; The roller cutter operates at the same speed during the front section roller cutting and the middle and rear section roller pressing and feeding, ensuring that the material sheet is conveyed evenly, thereby ensuring that the laser's scanning speed does not need to be changed to complete the degumming process. The laser's trajectory is connected to external software, which adjusts the scanning area in real time according to the actual adhesive removal area, making the whole method highly applicable. When the adhesive layer is thick enough that it cannot be removed in one laser scan, it can be removed by a second or third laser scan. The fumes generated after the laser removes the adhesive layer through vaporization are promptly removed by a negative pressure dust collection system. The small amount of carbon deposits generated by the laser removal of the adhesive layer are removed by brush rollers or compressed air blowing, ensuring that the surface of the sheet entering the next process is clean and that it does not pollute the external environment.

[0006] Using this method, the flatness of the sheet is adjusted by the tension control system of the roller cutter. The sheet is then conveyed flat to the rear, where the vision system captures the size of the sheet and its position relative to the base film. The image information is then transmitted to the laser. The laser calculates the area of ​​adhesive layer that needs to be removed based on the position of the sheet. After the sheet is conveyed directly below the laser, the laser drives the laser to perform a flat sweeping removal operation on the corresponding adhesive layer area. Utilizing the high energy density of the laser, the adhesive layer material is instantly vaporized, decomposed, or carbonized through thermal or photochemical effects, achieving precise removal without mechanical contact. Furthermore, the roller cutter provides continuous material conveying, tension control, and positioning, ensuring the stability and consistency of the laser treatment area. It can also integrate a roller pressing mechanism for pre-treatment or post-treatment of the material surface. Attached Figure Description

[0007] Figure 1 This is a simplified schematic diagram of the method of the present invention; Figure 2 This is an enlarged schematic diagram showing the adhesive layer being removed according to the present invention; The names corresponding to the serial numbers in the diagram are as follows: 10. Material strip, 20. Roller cutter, 21. Roller cutter, 22. Pressure roller, 30. Material sheet, 31. Adhesive layer, 40. Base film, 50. Laser, 60. CCD lens, 70. Connecting frame. Detailed Implementation

[0008] A method for online laser degumming with a roller cutter, see Figures 1-2The strip 10 is continuously cut by the roller cutter 21 of the roller cutter 20 to obtain the corresponding sheet 30. The sheet 30 is pressed flat along the pressure roller 22 of the roller cutter 20 and conveyed to the rear through the bottom film 40. The pressed flat sheet 30 is subjected to the removal of excess material area by the laser emitted by the laser 50. The laser emitted by the laser head of the laser 50 quickly and flatly moves relative to the excess material area of ​​the sheet 30 to remove the adhesive layer 31 in the corresponding area, so that the adhesive layer is removed by vaporization, decomposition or carbonization. The front end of the laser 50 is integrated with a vision system. The vision system scans the position of the cut sheet 30. The position of the sheet obtained by scanning is accurately transmitted to the corresponding coordinate system of the laser 50. The laser 50 calculates the area of ​​adhesive layer that needs to be removed from the sheet based on the position of the sheet 30. After the sheet 30 is conveyed to the area directly below the laser 50, the laser 50 drives the laser to perform a flat sweeping removal operation on the corresponding adhesive layer area.

[0009] In specific implementation, the vision system is a CCD lens 60 placed in front of the laser 50 via a connecting frame 70. The CCD lens 60 completely covers the width of the base film 40 and the entire surface area of ​​the material sheet 30 to ensure accurate and reliable dimensional results. The laser emitted by laser 50 is perpendicular to the material sheet 30, ensuring stable and reliable removal. When the adhesive layer 31 is an organic adhesive layer, the laser emitted by the laser is a CO2 laser, which removes the adhesive layer through a thermal effect. The adhesive layer 31 is a heat-resistant adhesive or an ultra-thin material. The laser emitted by the laser is an ultraviolet laser or a picosecond / femtosecond laser. The ultraviolet laser is a 355nm laser, and the picosecond / femtosecond laser is an ultra-short pulse, high-precision laser.

[0010] In practice, the laser spot diameter of laser 50 is 10μm to 100μm, which is selected according to the area of ​​excess material; the laser scanning speed is 500-2000mm / s. In practice, too fast a speed may result in incomplete removal, while too slow a speed may damage the substrate material.

[0011] In practice, the roller cutter 20 operates at the same speed during the front section of roller cutting and the middle and rear section of roller pressing and feeding, ensuring that the material sheet 30 is conveyed evenly, thereby ensuring that the laser scanning speed of the laser 50 does not need to be changed to complete the degumming.

[0012] The laser 50's trajectory is connected to external software, which allows for real-time adjustment of the flat sweeping area based on the actual adhesive removal area, making the entire method highly adaptable.

[0013] When the thickness of the adhesive layer 31 is large and it cannot be removed in one laser scan, it can be removed by subsequent second or third laser scans. Alternatively, if the adhesive layer 31 needs to be partially retained in terms of thickness, the laser can be used to remove it at a lower power to ensure that the retained adhesive layer meets the requirements for subsequent use.

[0014] During routine operations, the laser output power is adjusted according to the thickness of the adhesive layer, typically ranging from 5 to 50W, with thicker adhesive layers requiring higher power.

[0015] In practice, the smoke generated after the laser removes the adhesive layer through vaporization is promptly removed by a negative pressure dust collection system. The small amount of carbon deposits generated by the laser removal of the adhesive layer are removed by brush rollers or compressed air blowing, ensuring that the surface of the sheet entering the next process is clean and that it does not pollute the external environment.

[0016] Using this method, the flatness of the sheet is adjusted by the tension control system of the roller cutter. The sheet is then conveyed flat to the rear, where the vision system captures the size of the sheet and its position relative to the base film. The image information is then transmitted to the laser. The laser calculates the area of ​​adhesive layer that needs to be removed based on the position of the sheet. After the sheet is conveyed directly below the laser, the laser drives the laser to perform a flat sweeping removal operation on the corresponding adhesive layer area. Utilizing the high energy density of the laser, the adhesive layer material is instantly vaporized, decomposed, or carbonized through thermal or photochemical effects, achieving precise removal without mechanical contact. Furthermore, the roller cutter provides continuous material conveying, tension control, and positioning, ensuring the stability and consistency of the laser treatment area. It can also integrate a roller pressing mechanism for pre-treatment or post-treatment of the material surface.

[0017] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0018] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for online laser degumming using a roller cutter, characterized in that: The strip is continuously cut by the roller cutter to obtain the corresponding sheet. The sheet is pressed flat along the pressure roller of the roller cutter and conveyed to the rear through the bottom film. The flattened sheet is removed by the laser emitted by the laser. The laser emitted by the laser head of the laser quickly and flatly moves relative to the excess material area of ​​the sheet to remove the adhesive layer in the corresponding area. The laser has a vision system integrated at the front end. The vision system scans the position of the cut sheet and accurately transmits the position of the sheet to the corresponding coordinate system of the laser. The laser calculates the area of ​​adhesive layer that needs to be removed based on the position of the sheet. After the sheet is transported directly below the laser, the laser drives the laser to perform a flat sweeping removal operation on the corresponding area of ​​adhesive layer.

2. The online laser degumming method for roller cutters according to claim 1, characterized in that: The vision system is specifically a CCD lens placed in front of the laser via a connecting frame, the CCD lens completely covering the width of the base film and the entire surface area of ​​the sheet.

3. The online laser degumming method for roller cutters according to claim 2, characterized in that: The laser emitted by the laser is perpendicular to the seam of the material sheet.

4. The online laser degumming method for roller cutters according to claim 3, characterized in that: When the adhesive layer is an organic adhesive layer, the laser emitted by the laser is a CO2 laser, which removes the adhesive layer through thermal effect.

5. The online laser degumming method for roller cutters according to claim 3, characterized in that: The adhesive layer is a heat-resistant adhesive or an ultra-thin material, and the laser emitted by the laser is an ultraviolet laser or a picosecond / femtosecond laser, wherein the ultraviolet laser is a 355nm laser, and the picosecond / femtosecond laser is an ultra-short pulse, high-precision laser.

6. The online laser degumming method for roller cutters according to claim 3, characterized in that: The laser spot diameter of the laser is 10μm to 100μm.

7. The online laser degumming method for roller cutters according to claim 1, characterized in that: The roller cutter operates at the same speed during the front section of roller cutting and the middle and rear sections of roller pressing and feeding, ensuring that the material sheet is conveyed evenly. This ensures that the laser's scanning speed does not need to be changed to complete the degumming process.

8. The online laser degumming method for roller cutters according to claim 1, characterized in that: The laser's trajectory is connected to external software, which allows for real-time adjustment of the scanning area based on the actual adhesive removal area.

9. The online laser degumming method for roller cutters according to claim 1, characterized in that: When the adhesive layer is thick enough that it cannot be removed in a single laser scan, it can be removed by a second or third laser scan.

10. The online laser degumming method for roller cutters according to claim 1, characterized in that: The fumes generated after the laser removes the adhesive layer through vaporization are promptly removed by a negative pressure dust collection system. The small amount of carbon deposits produced by the laser removal of the adhesive layer are removed by brush rollers or compressed air blowing.

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