CN110549008A - Silk screen printing plate, and processing system and processing method for laser processing silk screen printing plate - Google Patents
Silk screen printing plate, and processing system and processing method for laser processing silk screen printing plate Download PDFInfo
- Publication number
- CN110549008A CN110549008A CN201910748924.2A CN201910748924A CN110549008A CN 110549008 A CN110549008 A CN 110549008A CN 201910748924 A CN201910748924 A CN 201910748924A CN 110549008 A CN110549008 A CN 110549008A
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- Prior art keywords
- processing
- laser
- screen printing
- laser beam
- printing plate
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/073—Shaping the laser spot
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/14—Forme preparation for stencil-printing or silk-screen printing
- B41C1/145—Forme preparation for stencil-printing or silk-screen printing by perforation using an energetic radiation beam, e.g. a laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/24—Stencils; Stencil materials; Carriers therefor
Abstract
the invention provides a screen printing plate, a processing system and a processing method for laser processing of the screen printing plate. The processing system for processing the screen printing plate by the laser comprises a laser light source, a light path system, a cutting platform, a visual positioning system and a software control system. The processing method for processing the screen printing plate by the laser utilizes the processing system to process the screen printing plate, efficiently, quickly and flexibly produces the screen printing plate with high edge precision, environmental protection, safety and various patterns, and meets different processing requirements in the industry.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a screen printing plate, a processing system and a processing method for laser processing of the screen printing plate.
Background
With the increasing shortage of global energy, solar energy is favored by countries in the world with unique advantages of no pollution, large market space and the like. The solar cell, also called "photovoltaic cell" or "solar chip", can convert solar energy into electrical energy by photovoltaic effect, and mainly includes crystalline silicon cell, semiconductor cell, inorganic cell, organic cell, etc., wherein the crystalline silicon solar cell occupies the mainstream position in the market. The structure of the crystalline silicon solar cell comprises: front side suede, front side PN junction, front side antireflection film, front side and back side electrodes and the like. Currently, in the photovoltaic industry, screen printing techniques are widely used to form electrodes of solar cells.
The silk screen printing is that silk fabric, synthetic fiber fabric or metal screen is stretched on a screen frame, and the silk screen printing is manufactured by adopting a manual paint film engraving method or a photochemical plate making method. The modern screen printing technology is to make screen printing plate by photoengraving method with photosensitive material, and during printing, the ink is transferred to the printing stock through the meshes of the image-text part by the extrusion of the scraper to form the image-text same as the original manuscript. The printing plate mainly comprises a fixed sealing layer formed by an adhesive film, a film or other materials so as to block ink of the non-image-text part. At present, a printing plate is usually manufactured in a developing mode after coating photosensitive resist in the solar photovoltaic industry, but the printing plate manufactured in the mode has the defects of insufficient edge fineness and insufficient material wear resistance. Meanwhile, the mode of processing by using a chemical method can bring harm to the health of workers and the environment. The pattern adjustment procedure is complex when processing the printing plate, the selectivity is small, and the market demand can not be met. The processing procedures are more, the production efficiency is low, and the labor cost is higher. The machining precision is not high, and the machining yield is limited.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the solar cell screen printing plate has the advantages of high edge precision, good wear resistance, environmental friendliness and convenience in processing;
the invention aims to solve another technical problem that: the processing system of the screen printing plate is provided, and the screen printing plate raw material can be processed into the screen printing plate meeting the requirement by using the system;
The invention aims to solve another technical problem that: the processing method is used in a processing system of the screen printing plate, and further a solar cell screen printing plate which is high in edge precision, good in wear resistance, environment-friendly and convenient to process is produced.
In order to solve the technical problems, the invention adopts the technical scheme that: there is provided a screen plate comprising a high molecular polymer layer, an adhesive layer and a screen layer, the high molecular polymer layer being connected to the screen layer through the adhesive layer.
Further, the material selected for the polymer layer comprises PI.
There is provided a processing system for processing a screen printing plate as described above, the processing system comprising a laser light source, an optical path system, a cutting platform, a vision positioning system and a software control system.
Further, the wavelength of the laser beam emitted by the laser light source is 355nm or 343 nm.
Further, the optical path system comprises a beam expanding lens, a beam shaping system, a reflecting mirror and a focusing system which are sequentially arranged along the laser transmission optical path.
Further, the cutting platform is mounted on a displacement control device.
Further, the cutting platform has at least 2 cutting channels and micropores.
Further, the visual positioning system includes an industrial positioning camera.
Further, the pulse width of the laser light source is 10fs-200 ns.
Further, the beam shaping system includes a DOE element.
Further, the focusing system comprises a field lens system and a galvanometer system.
The processing method for processing the screen printing plate by using the processing system comprises the following steps:
a. Material placement: placing a material to be processed on a working platform;
b. Material positioning: adjusting and confirming the position of the material to be processed;
c. Laser beam adjustment: controlling a laser to emit laser beams, and adjusting the laser beams to enable the focus points of the laser beams to be positioned on the material to be processed;
d. Processing the fine grid: controlling the relative position of the laser beam and the processing material according to the position of the material to be processed, so that the laser beam reaches a first preset position on the processing material, the laser beam travels along a path required by fine grid forming, and the fine grid is formed after processing;
e. Processing the edge of the main grid: adjusting the position of the material to be processed, and controlling the relative position of the laser beam and the processed material to enable the laser beam to reach a second preset position on the processed material, wherein the laser beam travels along a path required by the forming of the edge area of the main grid and becomes the edge area of the main grid after processing;
f. Processing the inside of the main grid: and after the edge area of the main grid is processed, processing the residual area of the inner area of the main grid by using the laser beam.
Further, in step c, adjusting the laser beam includes: the gaussian light is shaped into a flat top light.
Further, in step c, adjusting the laser beam further includes: the laser beam is split, and single/multiple beams can work.
Further, in the step d, the processing width of the fine grid is 10-50 μm.
furthermore, in the step e, the processing width of the edge of the main grid is 20-50 μm, and the total processing width of the main grid is 0.1-15 mm.
Further, in the step f, the inner part of the main grid is processed in a mode of controlling the scanning of the galvanometer.
the invention has the beneficial effects that: the laser cutting method is used for replacing an exposure backwashing method, so that the chemical process is reduced, the method is more friendly to workers and environment, a software control system is designed for processing patterns, and the operability is high; by adopting laser cutting, the verticality of the edge of the material is better, and the printing quality can be improved; after laser shaping, damage to the bottom layer material can be avoided, and the material processing yield is improved.
Drawings
The specific structure of the invention is detailed below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the fine and main grid processing of the present invention;
FIG. 2 is a schematic diagram of a fine gate and a main gate according to the present invention;
FIG. 3 is a schematic view of a screen printing plate according to the present invention;
fig. 4 is a schematic diagram of a processing system of the screen plate of the present invention.
Detailed Description
in order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to 4, the present invention provides a screen printing plate, wherein the screen printing plate 10 includes a polymer layer 11, an adhesive layer 12 and a screen layer 13, and the polymer layer 11 is connected to the screen layer 13 through the adhesive layer 12. When the laser beam 201 contacts the polymer layer 11, the polymer layer 11 is cut, when the laser beam 201 travels different paths, the polymer layer 11 forms corresponding cutting patterns, after the laser beam is cut, the edge of the screen plate is clear, and the cutting patterns can be adjusted along with the path change of the laser beam 201.
In order to process the screen printing plate 10, a processing system of the screen printing plate is now provided, which includes a laser light source 20, an optical path system 21, a cutting platform 22, a vision positioning system 23 and a software control system 24; the laser light source 20, the optical path system 21, the cutting platform 22 and the vision positioning system 23 cooperate under the unified control of the software control system 24. Placing the material 25 to be processed on the cutting platform 22, wherein the cutting platform 22 plays a role in fixing and supporting the material 25; the visual positioning system 23 identifies the designated Mark, feeds back the position information of the material to be processed to the software control system 24, and the software control system 24 positions the material 25 to be processed on the cutting platform 22; the optical path system 21 includes a beam expander 211, a beam shaping system 212, a mirror 213, and a focusing system 214; the beam expander 211 expands and collimates the laser beam 201, and the beam shaping system 212 is used for shaping the collimated and expanded laser beam into light spots in other forms from a round light spot with Gaussian distribution; the focusing system 214 is used for focusing the laser beam 201 on the surface of the processed material or in the material; the laser light source 20 emits a laser beam 201, which is focused by the optical path system 21 to the material 25 on the cutting platform 22, so as to process the material 25.
in order to provide a screen printing plate meeting the requirement, a processing method for processing the screen printing plate by using the processing system is provided, and comprises the following steps:
a. Material placement: the material 25 to be processed is placed on the work platform;
b. Material positioning: adjusting and confirming the position of the material 25 to be processed;
c. Laser beam adjustment: controlling a laser to emit a laser beam, and adjusting the laser beam 201 so that a focal point of the laser beam 201 is located on the material 25 to be processed;
d. Processing the fine grid: controlling the relative position of the laser beam 201 and the processing material 25 according to the position of the material 25 to be processed, so that the laser beam 201 reaches a first preset position on the processing material 25, the laser beam travels along a path required by the formation of the fine grid 001, and the fine grid 001 is formed after processing;
e. processing the edge of the main grid: adjusting the position of the material 25 to be processed, and controlling the relative position of the laser beam 201 and the processed material 25, so that the laser beam 201 reaches a second predetermined position on the processed material 25, and the laser beam travels along a path required by the forming of the main grid edge region 002, and becomes the main grid edge region 002 after processing;
f. Processing the inside of the main grid: after the main grid edge region 002 is processed, the remaining range of the main grid inner region 003 is processed using the laser beam.
From the above description, the beneficial effects of the present invention are: the laser cutting method is used for replacing an exposure backwashing method, so that the chemical process is reduced, the method is friendly to workers and environment, a software control system is designed for processing patterns, and the operability is high; by adopting laser cutting, the verticality of the edge of the material is better, and the printing quality can be improved; after laser shaping, damage to the bottom layer material can be avoided, and the material processing yield is improved.
example 1
in a processing system for processing a silk screen printing plate by laser, in order to avoid material thermal damage caused by laser processing of materials and ensure higher precision and good positioning performance during focusing, an ultraviolet light source with the wavelength of 355nm or 343nm is selected by the system for material processing. Laser beams of other wavelengths may be used for processing as required. Aiming at different processes and material processing requirements, the pulse width of the laser light source is 10fs-200 ns.
Example 2
The screen plate 10 includes a high polymer layer 11, an adhesive layer 12, and a screen layer 13; the laser light source 20 selected in the processing system of the screen printing plate is an ultraviolet light source with the wavelength of 355nm or 343nm, and lasers with other wavelengths can be adopted for processing according to actual needs. The polymeric layer should be easily cut by the laser beam 201, and should be made of a wear-resistant material as much as possible in consideration of wear of the screen printing plate 10 during use. Therefore, the polymer layer selected in the embodiment includes PI which is convenient for ultraviolet cutting and has good wear resistance. The polymeric layer may be made of other materials with similar functions.
Example 3
In the screen printing plate processing system, a material 25 to be processed is fixed on a cutting table 22, and a laser beam 201 processes the material. In the actual production process, the material has different processing technology requirements, and the cutting platform 22 is mounted on a displacement control device, so that the cutting platform 22 can drive the material 25 to rotate or move in a plane, and the laser beam 201 is adjusted by the optical path system 21, so that the material 25 has more operating space for the laser beam 201. When the cutting platform 22 is fixed, the material 25 is processed in a manner that the galvanometer 2142 drives the laser beam 201 to scan; when the laser beam 201 is stationary, the material is processed by moving the material 25 with the cutting platform 22. Meanwhile, a plurality of cutting channels and micropores are formed in the cutting platform 22, and the cutting channels can prevent the material processing position from directly contacting with the cutting platform 22, so that the heat influence in the cutting process is reduced.
example 4
In a processing system for laser processing a screen plate, in order to accurately position the processing position of a material, a visual positioning system 23 is used to identify a designated Mark, position information is fed back to a software control system 24, and the software control system 24 positions a material 25 to be processed on a cutting platform 22. The visual positioning system 23 in this embodiment uses an industrial positioning camera. Other products with positioning functions may also be used with the visual positioning system.
Example 5
In the screen printing plate processing system, the material processing process may be divided into a plurality of operations, the single laser beam 201 is inefficient, and the plurality of laser beams 201 may be used simultaneously to process the material 25. The beam shaping system 212 comprises a beam shaping element, can shape the Gaussian beam into flat-topped beam, removes the high-power peak of the Gaussian beam, can effectively avoid the damage of the bottom layer silk screen material, and improves the silk screen processing yield from 75% to 90%. The beam shaping system 212 further includes a beam splitting element, which can split the light beam into equal parts, the number of the split beams can be in the range of 2-30 beams, or split into more beams as required, thereby increasing the working efficiency by times. The beam shaping element and the beam splitting element can work independently or simultaneously, and even the functions of shaping and splitting can be integrated on the same device through design, so that the convenience of use is improved. The DOE element is adopted for beam shaping and beam splitting, the DOE is also called as diffraction optics, and after beam shaping and beam splitting, the working efficiency is greatly improved. Other components having beam shaping and beam splitting functions may also be employed in the beam shaping system.
the beam shaping system can adjust the laser beam 201, the processing width is 10-50 μm in the processing process of the fine grid 001, and the processing width is 20-50 μm in the processing process of the main grid edge 002, so that the processing requirements of different products and different processes are met.
Example 6
In the processing system of the screen printing plate, the laser beam 201 can achieve the processing effect on the material 25 by means of the rotation or planar movement of the cutting platform 22; in order to further improve the processing efficiency, the moving path of the laser beam 201 can be changed to process the material 25; the focusing system 214 includes a field lens system 2141 and a galvanometer system 2142; the galvanometer system 2142 may change the machining path of the laser beam 201 by itself to perform high-speed cutting, or may perform four-axis linkage cutting together with the cutting platform 22, thereby improving the flexibility and efficiency of machining.
Example 7
The processing method provided by the invention can process the main grid 0023 with the width of 0.1-15mm, and the main grid edge 002 is processed first, so that the good effect of the main grid edge can be ensured; the main grid inner region 003 can be scanned back and forth in sequence in a manner of controlling the scanning of the galvanometer 2142 so as to fill the whole main grid inner region 003; because main bars 0023 width is broad, adopt this mode can effectively improve and process whole machining efficiency.
In summary, the present invention provides a screen printing plate, a processing system for laser processing the screen printing plate, and a processing method of the screen printing plate. The laser cutting method is used for replacing an exposure backwashing method, the PI material is used for replacing a film material, the selected laser beam is convenient to cut, meanwhile, the PI material is good in wear resistance, the service life is prolonged by 1 time, and greater benefits can be brought to a user. The processing process cancels the chemical treatment process, and is more friendly to workers and environment. The laser beam forms flat top light after passing through the beam shaping system, the verticality of the edge of the processed PI material pattern is better, the printing quality can be further improved, and the shaping removes the high-power peak of the Gaussian beam, so that the damage of the bottom layer silk screen material can be effectively avoided, and the silk screen processing yield is improved from 75% to 90%. The processing line width is adjustable, and cutting platform installs on mobile control device simultaneously, can satisfy the demand of different patterns, different producers, and is nimble convenient, uses extensively. In the main grid processing process, the edge of the main grid is processed firstly, the verticality of the material at the edge of the main grid is guaranteed, the printing quality is improved, and the vibrating mirror processing is utilized for internal scanning, so that the processing efficiency can be greatly improved; in the beam shaping system, the light beam can be divided into equal 2-30 beams, or more beams are adopted for simultaneous processing according to the processing requirement, so that the processing efficiency can be greatly improved; the single laser processing speed is about 4 screen printing plates/H, and the labor cost is reduced.
Here, the upper, lower, left, right, front, and rear merely represent relative positions thereof and do not represent absolute positions thereof
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (17)
1. A screen printing plate characterized by: the silk screen printing plate comprises a high polymer layer, an adhesive layer and a silk screen layer, wherein the high polymer layer is connected with the silk screen layer through the adhesive layer.
2. the screen printing forme of claim 1, wherein: the material selected for the high polymer layer comprises PI.
3. A processing system for processing the screen printing forme of claim 1 or 2, characterized in that: the processing system comprises a laser light source, a light path system, a cutting platform, a visual positioning system and a software control system.
4. The processing system of claim 3, wherein: the wavelength of the laser beam emitted by the laser light source is 355nm or 343 nm.
5. The processing system of claim 3, wherein: the light path system comprises a beam expanding lens, a light beam shaping system, a reflecting mirror and a focusing system which are sequentially arranged along a laser transmission light path.
6. the processing system of claim 3, wherein: the cutting platform is mounted on a displacement control device.
7. The processing system of claim 3, wherein: the cutting platform has at least 2 cutting channels and micropores.
8. The processing system of claim 3, wherein: the visual positioning system includes an industrial positioning camera.
9. The processing system of claim 4, wherein: the pulse width of the laser light source is 10fs-200 ns.
10. the processing system of claim 5, wherein: the beam shaping system includes a DOE element.
11. The processing system of claim 5, wherein: the focusing system comprises a field lens system and a galvanometer system.
12. A method for processing a screen printing plate, comprising the steps of:
a. material placement: placing a material to be processed on a working platform;
b. material positioning: adjusting and confirming the position of the material to be processed;
c. Laser beam adjustment: controlling a laser to emit laser beams, and adjusting the laser beams to enable the focus points of the laser beams to be positioned on the material to be processed;
d. Processing the fine grid: controlling the relative position of the laser beam and the processing material according to the position of the material to be processed, so that the laser beam reaches a first preset position on the processing material, the laser beam travels along a path required by fine grid forming, and the fine grid is formed after processing;
e. Processing the edge of the main grid: adjusting the position of the material to be processed, and controlling the relative position of the laser beam and the processed material to enable the laser beam to reach a second preset position on the processed material, wherein the laser beam travels along a path required by the forming of the edge area of the main grid and becomes the edge area of the main grid after processing;
f. Processing the inside of the main grid: and after the edge area of the main grid is processed, processing the residual area of the inner area of the main grid by using the laser beam.
13. The process of claim 12 wherein: in step c, adjusting the laser beam comprises: the gaussian light is shaped into a flat top light.
14. The process of claim 12 wherein: in step c, adjusting the laser beam further comprises: the laser beam is split, and single/multiple beams can work.
15. The process of claim 12 wherein: in the step d, the processing width of the fine grid is 10-50 μm.
16. The process of claim 15 wherein: in the step e, the processing width of the edge of the main grid is 20-50 μm, and the total processing width of the main grid is 0.1-15 mm.
17. The process of claim 15 wherein: and f, processing the interior of the main grid in a mode of controlling the scanning of the galvanometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748924.2A CN110549008A (en) | 2019-08-14 | 2019-08-14 | Silk screen printing plate, and processing system and processing method for laser processing silk screen printing plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910748924.2A CN110549008A (en) | 2019-08-14 | 2019-08-14 | Silk screen printing plate, and processing system and processing method for laser processing silk screen printing plate |
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Cited By (4)
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| CN111469531A (en) * | 2020-03-11 | 2020-07-31 | 昆山恒盛电子有限公司 | SE screen printing plate manufacturing process without net knots |
| CN111516368A (en) * | 2020-05-25 | 2020-08-11 | 江苏盛矽电子科技有限公司 | Preparation method of polyimide solar screen printing plate |
| CN112935574A (en) * | 2019-12-11 | 2021-06-11 | 大族激光科技产业集团股份有限公司 | Silk screen processing method |
| CN113075863A (en) * | 2020-01-03 | 2021-07-06 | 大族激光科技产业集团股份有限公司 | Plate making method of silk screen printing plate |
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Application publication date: 20191210 |