Method for preventing laser from burning steel wires in screen printing plate manufacturing

Abstract

The invention provides a method for preventing laser from burning a steel wire in screen printing plate manufacturing, and relates to the technical field of screen printing plate manufacturing. Comprising the following steps: stretching a net: stretching a net cloth according to a preset tension and fixing the net cloth on a net frame; degreasing: putting the screen printing plate into an automatic cleaning machine, cleaning the surface of the steel wire mesh, and drying; film plating: putting the screen into a film plating machine, and plating an anti-laser material on the surface of a steel wire on the printing surface of the screen; film pasting, wherein a PI film and the screen printing plate plated with the anti-laser material are subjected to hot-pressing pasting; and manufacturing a printed pattern: obtaining the printed pattern in a laser etching mode. According to the invention, a layer of anti-laser material is plated or sprayed on the steel wire mesh, so that the burning degree of laser to steel wires in the laser cutting process is reduced, and the service life of the screen printing plate is prolonged. The anti-laser material can be, but not limited to, nickel, chromium, tungsten, cobalt, titanium, ceramic and the like, and is plated on the surface of the steel wire mesh by means of electroplating, vacuum plating, ion plating, ion spraying and the like.

Description

Technical Field

[0001] The invention relates to the technical field of screen production, in particular to a method for preventing laser from burning steel wires during screen production. Background Art

[0002] In screen making, steel wire plays a vital role. Steel wire is the main structural material of the screen and provides physical support for the screen. During the screen making process, the steel wire is stretched and tightened on the screen frame to form a grid-like structure. This structure can support the mesh and ensure that the mesh maintains stable tension during the printing process. The steel wire fits tightly with the mesh, and the mesh is fixed on the steel wire to form the basic structure of the screen. This fixing method ensures that the mesh will not shift during the printing process, thereby ensuring the accuracy and consistency of the printed pattern. The gaps between the steel wires form the mesh holes on the screen. The size and shape of these mesh holes determine the ability of ink to pass through the screen, which affects the resolution and detail of the printed pattern. The diameter and arrangement of the steel wire directly affect the mesh count of the screen (that is, the number of mesh holes per inch). The steel wire has high strength and corrosion resistance, which enables the screen to maintain its shape and function during repeated printing processes, extending the service life of the screen.

[0003] At present, the screen for photovoltaic printing is mainly made by laser cutting PI film to produce graphics. With the improvement of screen accuracy, the wire diameter of the steel wire mesh is getting thinner and thinner, and it has reached 7μm at present. As the steel wire becomes thinner, the strength of the screen is getting lower and lower, and the life is getting lower and lower. The production process of photovoltaic screen is to use the steel wire mesh as the base, stick a layer of PI film on it, and then cut the PI film by laser to produce graphics. The advantages of laser cutting PI film to make screens are higher screen accuracy and higher screen quality stability.

[0004] At present, during the laser cutting of PI film, the laser easily burns the steel wire inside the grid line, resulting in low screen strength, easy cracking during printing, and short life. Therefore, those skilled in the art provide a method for preventing laser from burning the steel wire during screen production to solve the problems raised in the above background technology. Summary of the invention

[0005] In view of the deficiencies of the existing technology, in the existing technology, the traditional detection system requires manual system configuration and initialization, which is a cumbersome and time-consuming process. The traditional detection system lacks real-time monitoring and automatic alarm functions. Once an abnormality occurs, manual detection and intervention are required, which poses a safety hazard.

[0006] To achieve the above objectives, the present invention is implemented by the following technical scheme: comprising the following steps:

[0007] S1.1, net stretching step: stretch the mesh cloth according to the predetermined tension and fix it on the mesh frame;

[0008] S1.2, degreasing step: put the screen into the automatic cleaning machine, clean the surface of the wire mesh through the spray system to remove oil, dust and impurities, and then dry it;

[0009] S1.3, coating step: put the cleaned and dried screen into the coating machine, and use vacuum coating, sputtering coating or chemical coating technology to coat a layer of anti-laser material on the surface of the steel wire on the screen printing surface;

[0010] S1.4, film laminating step: hot press the screen coated with anti-laser material and PI film, using a high temperature and high pressure hot press to ensure a firm fit without bubbles and wrinkles;

[0011] S1.5, Printing pattern production steps: Use laser etching equipment to produce patterns on the screen with the film attached. The laser mainly acts on the PI film. After etching, holes corresponding to the printed pattern are formed.

[0012] Preferably, the method comprises the following process: the laser-resistant material is a metal coating or a high-temperature-resistant plastic coating.

[0013] Preferably, the coating technology includes vacuum coating, sputtering coating or chemical coating.

[0014] Preferably, in the hot pressing laminating step, a high-temperature and high-pressure hot pressing machine is used to laminate the PI film and the screen.

[0015] Preferably, the laser etching equipment is capable of adjusting the power, speed and spot size parameters of the laser to reduce the thermal impact on the steel wire.

[0016] Preferably, the automatic cleaning machine has a spray system for cleaning the surface of the wire mesh.

[0017] Preferably, the drying step is used to completely dry the screen to ensure that no moisture remains.

[0018] Preferably, through the above steps, the laser can be effectively prevented from burning the steel wire, thereby improving the durability and printing quality of the screen.

[0019] Preferably, by comparing and analyzing the existing technology with the improved screen making method, we can see that the improved method has significant advantages in screen stretching, degreasing, coating, film lamination and printing graphic production.

[0020] Preferably, the method can improve the durability and printing quality of the screen, reduce production costs, improve production efficiency, and provide a better quality, more efficient and more environmentally friendly solution for the printing industry.

[0021] Preferably, the power, speed and spot size of the laser are adjusted to ensure the etching effect. During the laser etching process, a cooling system is used to reduce the thermal impact on the steel wire. The laser etching process is automated to improve production efficiency and consistency.

[0022] Preferably, the stability of the screen is improved, the clarity and consistency of the printed graphics are guaranteed, and due to the improved durability of the screen, the replacement frequency of the screen is reduced, thereby reducing the production cost.

[0023] Preferably, the rapid production and high quality of the screen ensures a smooth production process, improves overall production efficiency, reduces the generation of waste screens, and reduces energy consumption in the production process.

[0024] Preferably, manual or simple mechanical screen stretching is used, as the tension control is unstable and can easily lead to screen deformation. Manual cleaning or simple cleaning equipment has poor cleaning effects and makes it difficult to remove oil and impurities on the screen surface. Traditional electroplating or chemical plating technology is used, resulting in poor coating uniformity, insufficient adhesion and heat resistance. Simple hot pressing equipment is used, resulting in poor lamination effects and prone to bubbles and wrinkles. During laser etching, the steel wire is easily damaged by heat, affecting the screen life and printing quality.

[0025] The present invention provides a method for preventing laser from burning steel wire in screen production, which has the following beneficial effects: In the present invention, by plating or spraying a layer of anti-laser material on the steel wire mesh, the degree of laser burning on the steel wire is reduced during laser cutting, thereby improving the screen life. The anti-laser material can be, but is not limited to, nickel, chromium, tungsten, cobalt, titanium, ceramics, etc., and is plated on the surface of the steel wire mesh by electroplating, vacuum plating, ion plating, ion spraying, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a method for preventing laser from burning steel wire in screen manufacturing of the present invention;

[0027] Figure 2 A schematic flow chart of a method for preventing laser from burning steel wire in screen production of the present invention; DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] refer to Figure 1 - Figure 2 This embodiment aims to describe in detail a method for making a screen, which effectively prevents the laser from burning the steel wire through a series of technical steps, thereby improving the durability and printing quality of the screen. The following is a detailed description of the embodiment:

[0031] Net setting steps, preparation: select the appropriate mesh, cut it to the required size, and prepare the net frame.

[0032] Net stretching operation: Spread the mesh evenly on the mesh frame and use the net stretching equipment to stretch the mesh according to the predetermined tension. The net stretching equipment should be able to accurately control the tension to ensure that the mesh remains even during the stretching process.

[0033] Fixing: During the net stretching process, fix the edge of the mesh on the fixing device of the mesh frame to ensure that the mesh remains stable in the mesh frame.

[0034] Degreasing step, preparation: Place the stretched screen into the automatic cleaning machine.

[0035] Cleaning: Turn on the automatic cleaning machine and use the spray system to clean the surface of the wire mesh. The spray system should be able to produce a uniform spray effect to remove impurities such as oil, dust, etc. on the surface of the screen.

[0036] Drying: After cleaning, take out the screen and put it into the drying equipment. The drying equipment should be able to completely dry the moisture on the surface of the screen to ensure that there is no moisture left.

[0037] Coating steps, preparation: Place the cleaned and dried screen into the coating machine.

[0038] Coating: Vacuum coating, sputtering coating or chemical coating technology is used to coat a layer of laser-resistant material on the surface of the screen printing wire. The coating process should ensure that the coating is evenly and firmly attached to the wire.

[0039] Film pasting steps, preparation: Take out the screen coated with anti-laser material and place it on a flat workbench.

[0040] Film lamination: Laminate the PI film and the screen by heat pressing. Use a high-temperature and high-pressure hot press to ensure that the PI film and the screen are firmly attached without bubbles and wrinkles.

[0041] Printing graphics production steps, preparation: Place the screen with the film attached into the laser etching equipment.

[0042] Laser etching: Adjust the laser power, speed and spot size to ensure that the etching process has minimal thermal impact on the steel wire. The laser mainly acts on the PI film, and after etching, holes corresponding to the printed pattern are formed.

[0043] Implementation effect: Through the above embodiments, we have obtained a method for making a screen that prevents laser from burning steel wire. The method has the following advantages:

[0044] Improved screen durability: Through steps such as screen stretching, degreasing, and coating, the stability and durability of the screen during the printing process are ensured.

[0045] Improved printing quality: Through the film lamination and laser etching steps, the clarity and accuracy of the printed graphics are ensured.

[0046] Reduced costs: This method reduces screen damage and replacement frequency due to wire burns, thereby reducing production costs.

[0047] Protects the environment: By reducing screen damage and replacement, the generation of discarded screens is reduced, which is beneficial to environmental protection.

[0048] Through the above implementation steps, the screen making method of this embodiment has the following significant effects:

[0049] Improved durability of the screen: The combination of the coating layer and the PI film effectively protects the steel screen and reduces thermal damage during laser etching.

[0050] Improved printing quality: The stability of the screen is improved, and the clarity and consistency of the printed graphics are guaranteed.

[0051] Reduced production costs: Due to the improved durability of the screen, the frequency of screen replacement is reduced, thereby reducing production costs.

[0052] Improved production efficiency: The fast production and high quality of the screen ensure a smooth production process and improve overall production efficiency.

[0053] Environmental protection and energy saving: It reduces the generation of waste screens and reduces energy consumption in the production process.

[0054] In summary, this embodiment provides an effective screen printing method, which can be widely used in the printing industry to provide users with high-quality printed products.

[0055] Example 2: With the continuous advancement of printing technology, the quality of the screen, as a key component in the printing process, directly affects the printing effect. The traditional screen production method has some limitations, such as the steel wire is easily burned by the laser, the screen has poor durability, and the printing quality is unstable. This example aims to compare and analyze

[0056] The existing technology and the improved screen making method demonstrate the advantages of the improved method from multiple aspects.

[0057] Analysis of existing technology, traditional screen making method:

[0058] Screen stretching: Using manual or simple mechanical screen stretching, the tension control is unstable and it is easy to cause screen deformation.

[0059] Degreasing: Manual cleaning or simple cleaning equipment has poor cleaning effect and it is difficult to remove oil and impurities on the surface of the screen.

[0060] Coating: Using traditional electroplating or chemical plating technology, the coating uniformity is poor, and the adhesion and heat resistance are insufficient.

[0061] Film lamination: Using simple heat pressing equipment, the lamination effect is poor and bubbles and wrinkles are prone to occur.

[0062] Printing graphic production: During the laser etching process, the steel wire is easily damaged by heat, which affects the life of the screen and the printing quality.

[0063] Existing laser etching technology, laser power: if the laser power is too high, it is easy to cause burns to the steel wire; if the power is too low, it will affect the etching effect.

[0064] Laser speed: If the speed is too fast, the etching depth will be insufficient; if the speed is too slow, the production efficiency will be affected.

[0065] Spot size: If the spot is too large, the etching accuracy will be affected; if the spot is too small, it will be difficult to etch complex patterns.

[0066] Improved screen making method, screen spreading steps:

[0067] Use professional net stretching equipment to ensure that the mesh is evenly stretched according to the predetermined tension.

[0068] The net-setting process is automated to improve the accuracy and stability of the net-setting.

[0069] In the degreasing step, use an automatic cleaning machine for better cleaning effect and remove oil and impurities on the surface of the screen.

[0070] The cleaning process is automated to improve cleaning efficiency and consistency.

[0071] The coating step uses vacuum coating technology, which ensures uniform coating with stronger adhesion and heat resistance.

[0072] The coating process is automated to improve production efficiency and consistency.

[0073] During the film lamination step, a high temperature and high pressure hot press is used to ensure that the PI film fits tightly to the screen without bubbles or wrinkles.

[0074] The lamination process is automated to improve production efficiency and consistency.

[0075] Printing graphics production steps, adjust the laser power, speed and spot size to ensure the etching effect.

[0076] During the laser etching process, a cooling system is used to reduce the thermal effects on the steel wire.

[0077] Automating the laser etching process improves production efficiency and consistency.

[0078] Comparative analysis, net setting steps:

[0079] Existing technology: The tension control is unstable, which easily leads to deformation of the screen.

[0080] Improvement method: Precise tension control to improve screen stability.

[0081] Degreasing step, existing technology: the cleaning effect is poor and it is difficult to remove oil and impurities.

[0082] Improvement method: better cleaning effect and improved screen cleanliness.

[0083] Coating step, existing technology: poor coating uniformity, insufficient adhesion and heat resistance.

[0084] Improvement method: The coating is uniform, with stronger adhesion and heat resistance.

[0085] Film pasting step, existing technology: the pasting effect is not good, and bubbles and wrinkles are easy to appear.

[0086] Improvement method: Tight fit, no bubbles and wrinkles.

[0087] Printing pattern production steps, existing technology: laser power, speed and spot size are difficult to control, affecting the etching effect.

[0088] Improvement method: Laser parameters are adjustable to ensure etching effect.

[0089] Conclusion, through the comparative analysis of the existing technology and the improved screen making method, we can see that the improved method has significant advantages in screen stretching, degreasing, coating, film lamination and printing graphic production. This method can improve the durability and printing quality of the screen, reduce production costs, improve production efficiency, and provide a better quality, efficient and environmentally friendly solution for the printing industry.

[0090] Working principle: Use professional net stretching equipment and a precise control system to ensure that the mesh is evenly stretched according to the predetermined tension. Tension control: Use a tension sensor to monitor the mesh tension in real time to achieve precise control and avoid mesh deformation. Fix the tensioned mesh on the fixing device of the mesh frame to ensure that the mesh is evenly distributed in the mesh frame.

[0091] An automatic cleaning machine is used to thoroughly remove oil and impurities on the surface of the screen through soft bristles and mild cleaning fluid. The cleaning process is automated to ensure consistent cleaning effects and improve screen cleanliness. Vacuum coating technology is used to coat the printing surface of the steel wire mesh with a layer of anti-laser material. The working parameters of the coating machine are controlled to ensure uniform coating, improve adhesion and heat resistance, and anneal the coating layer to eliminate stress and improve coating performance. A high-temperature and high-pressure hot press is used to hot-press and bond high-quality PI film to the screen coated with anti-laser material. The temperature, pressure and time of the hot press are precisely controlled to ensure that the PI film and the screen are tightly bonded without bubbles or wrinkles. Laser etching equipment is used to adjust the power, speed and spot size of the laser to achieve precise etching. During the laser etching process, a cooling system is used to reduce the thermal impact on the steel wire and extend the life of the screen.

[0092] This working principle achieves the following goals by optimizing the key steps of screen stretching, degreasing, coating, laminating and printing graphics production:

[0093] Improve the durability of the screen and the printing quality.

[0094] Reduce production costs and improve production efficiency.

[0095] Provide better quality, more efficient and more environmentally friendly solutions for the printing industry.

[0096] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. Finally, it should be noted that the foregoing are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it will be still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to substitute some of the technical features therein. Any modifications, substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of the present invention as defined by the appended claims and their equivalents.

Claims

1. A method for preventing laser from burning steel wire in screen making, characterized in that: The following steps are involved: S1.1, net stretching step: stretch the mesh cloth according to the predetermined tension and fix it on the mesh frame; S1.2, degreasing step: put the screen into the automatic cleaning machine, clean the surface of the wire mesh through the spray system to remove oil, dust and impurities, and then dry it; S1.3, coating step: put the cleaned and dried screen into the coating machine, and use vacuum coating, sputtering coating or chemical coating technology to coat a layer of anti-laser material on the surface of the steel wire on the screen printing surface; S1.4, film laminating step: hot press the screen coated with anti-laser material and PI film, using a high temperature and high pressure hot press to ensure a firm fit without bubbles and wrinkles; S1.5, Printing pattern production steps: Use laser etching equipment to produce patterns on the screen with the film attached. The laser mainly acts on the PI film. After etching, holes corresponding to the printed pattern are formed.

2. The method for preventing laser from burning steel wire in screen making according to claim 1, characterized in that: The method comprises the following process: the anti-laser material is a metal coating or a high-temperature resistant plastic coating.

3. The method for preventing laser from burning steel wire in screen making according to claim 1, characterized in that: The coating technology includes vacuum coating, sputtering coating or chemical coating.

4. The method for preventing laser from burning steel wire in screen making according to claim 1, characterized in that: In the hot pressing laminating step, a high-temperature and high-pressure hot pressing machine is used to laminat the PI film and the screen.

5. The method for preventing laser from burning steel wire in screen making according to claim 1, characterized in that: The laser etching equipment can adjust the power, speed and spot size parameters of the laser to reduce the thermal impact on the steel wire.

6. The method for preventing laser from burning steel wire in screen making according to claim 1, characterized in that: The automatic cleaning machine has a spray system for cleaning the surface of the wire mesh.

7. The method for preventing laser from burning steel wire in screen making according to claim 1, characterized in that: The drying step is used to dry the screen thoroughly to ensure that no moisture remains.

8. The method for preventing laser from burning steel wire in screen making according to claim 1, characterized in that: Through the above steps, the laser can be effectively prevented from burning the steel wire, thereby improving the durability and printing quality of the screen.

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