Screen printing plate and screen printing equipment
By adopting a composite wire mesh structure, using the first wire mesh and the second wire mesh to bond with the third wire mesh, the accuracy and life problems caused by tension changes and deformation in the entire wire mesh are solved, and the accuracy and life problems are achieved. Higher printing accuracy and service life while reducing costs.
Patent Information
- Application Number
- CN202421218742.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-30
AI Technical Summary
During the screen printing process, the entire screen is prone to tension changes and deformation due to changes in the external environment, which affects the printing accuracy and service life. In particular, the polymer screen is highly elastic and easily deformed, and the metal wire screen lacks elasticity and is costly.
A composite wire mesh structure is adopted, including a first wire mesh, a second wire mesh and a third wire mesh, and a stable composite wire mesh is bonded to the third wire mesh through the overlapping area of the first wire mesh and the second wire mesh to form a stable composite wire mesh. , improve the defects of a single whole wire mesh.
It improves the bonding strength and service life of the composite wire mesh, enhances printing accuracy and stability, and reduces production costs.
Smart Images
Figure CN222522259U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present application relate to the field of screen printing technology, and in particular to a screen printing screen and a screen printing device. Background Art
[0002] Screen printing has good adaptability and can be printed on a variety of substrates, such as plastics, textiles, metals, glass and ceramics. Screen printing screens usually include screens and screen frames. During the screen printing process, the mesh holes of the non-image part of the screen are blocked and cannot pass through the ink; the mesh holes of the image part of the screen can pass through the ink, and the ink leaks onto the substrate to form a pattern. The screen printing screen is an important part of screen printing equipment and directly affects the quality of printing.
[0003] A whole screen made of a single material usually has certain defects. For example, a whole polymer screen has large elasticity and elongation, and is easily deformed, which reduces printing accuracy; while a whole metal screen is expensive and lacks resilience, and is easily affected by a decrease in tension, affecting its own printing accuracy and service life. Utility Model Content
[0004] The embodiments of the present application provide a screen printing screen and a screen printing device, which can improve the defects existing in the entire screen.
[0005] In a first aspect of the present application, a screen printing screen is provided, comprising: a screen frame; a first screen and a second screen, wherein the edge of the first screen and the edge of the second screen are fixed to the same side of the screen frame, the first screen and the second screen are respectively provided with a first opening and a second opening, and the first opening and the second opening at least partially overlap; a third screen, wherein the third screen is arranged between the first opening and the second opening, and the two side surfaces of the edge of the third screen are respectively overlapped with the first screen and the second screen, and the overlapping areas of the third screen and the first screen and the second screen are bonded by an adhesive, and the third screen is provided with a printing area.
[0006] In an embodiment of the present application, the screen printing screen includes a first screen, a second screen and a third screen. The defects of a single screen can be effectively improved by using the first screen, the second screen and the third screen together to form a composite screen. At the same time, the first screen and the second screen are respectively provided with a first opening and a second opening, the third screen is arranged between the first opening and the second opening, and the two side surfaces of the edge of the third screen overlap with the first screen and the second screen respectively; the embodiment of the present application can improve the bonding strength between the third screen and the first screen and the second screen by bonding the overlapping area of the third screen to the first screen and the second screen, effectively improving the problem that the bonding part of the composite screen is easy to crack, and improving the service life of the screen printing screen.
[0007] In some embodiments, the screen frame has a central axis, and the screen frame is symmetrical about the central axis; the first wire mesh includes a first warp and a first weft, and the first warp and the first weft are symmetrical about the central axis; the second wire mesh includes a second warp and a second weft, and the second warp and the second weft are symmetrical along the central axis.
[0008] In some embodiments, the angles between the first meridian and the second meridian and the central axis are both acute angles.
[0009] In some embodiments, the overlapping area is in the shape of a polygon, and any two adjacent sides of the polygon are connected by an arc angle.
[0010] In some embodiments, the second screen is made of the same material as the first screen, and the third screen is made of a different material than the first screen.
[0011] In some embodiments, the first wire mesh and the second wire mesh are polymer wire meshes, and the third wire mesh is a metal wire mesh.
[0012] In some embodiments, the polymer mesh is a nylon mesh, a polyurethane mesh, a terylene mesh or a polyester mesh; the metal mesh is a stainless steel mesh, a nickel alloy mesh or a tungsten steel alloy mesh.
[0013] In some embodiments, the adhesive is polyurethane glue that cures at room temperature.
[0014] In some embodiments, the first wire mesh, the second wire mesh and the third wire mesh are made of the same material; the mesh number of the second wire mesh is the same as the mesh number of the first wire mesh, and the mesh number of the third wire mesh is higher than the mesh number of the first wire mesh.
[0015] In a second aspect of the present application, a screen printing device is provided, comprising: a scraper and the screen printing screen described in the first aspect; wherein the scraper is used to scrape ink on a printing area of the screen printing screen.
[0016] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the present application, nor are they intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0018] Figure 1 is a structural schematic diagram of a screen printing screen from one perspective provided in some embodiments of the present application;
[0019] Figure 2 is a schematic structural diagram of a screen printing screen from another perspective provided in some embodiments of the present application;
[0020] Figure 3 is a schematic structural diagram of a screen printing screen provided by other embodiments of the present application;
[0021] Figure 4 It is a schematic diagram of the structure of the screen printing equipment provided in some embodiments of the present application. DETAILED DESCRIPTION
[0022] The principles and spirit of the present disclosure will be described below with reference to several exemplary embodiments shown in the accompanying drawings. It should be understood that the description of these specific embodiments is only to enable those skilled in the art to better understand and implement the present disclosure, and does not limit the scope of the present disclosure in any way. In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the meanings commonly understood by those of ordinary skill in the art.
[0023] As used herein, the term "including" and similar terms should be understood as open inclusion, i.e., "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first", "second", etc. may refer to different or the same objects, and are only used to distinguish the objects referred to, and do not imply a specific spatial order, temporal order, or order of importance of the objects referred to.
[0024] The entire polymer screen is easily affected by the external environment (such as temperature), which causes changes in tension and deformation; when printing circuit boards with high-precision circuits, circuit misalignment is likely to occur. The strength and printing accuracy of steel wire screens are usually higher than polymer screens; however, the entire steel wire screen usually lacks resilience and is prone to fatigue deformation and plastic deformation due to force, making it difficult for the screen printing plate to maintain its tension and return to its original position, affecting the printing accuracy and service life of the screen printing plate; in addition, the steel wire screen has a large area and high cost, and the printing area of the entire steel wire screen is usually only its central area.
[0025] In order to reduce the production cost of screen printing screens and improve the printing accuracy of screen printing screens, composite screens can be used to make screen printing screens; the printing working surface and non-printing working surface of the composite screen can use different types of screens, and the two types of screens are bonded by glue. For example, bonding a metal screen to a polymer screen can not only improve the stability of the screen printing screen, but also improve the printing accuracy of the screen printing screen.
[0026] For example, Figure 1 and Figure 2 The schematic diagram of the structure of the screen printing screen provided in the embodiment of the present application is shown. Figure 1 and Figure 2 As shown, the screen printing screen 100 includes: a screen frame 110 and a composite screen 120 ; wherein the composite screen 120 is arranged in the screen frame 110 , and the edge of the composite screen 120 is fixed on the screen frame 110 .
[0027] Please continue reading Figure 1 and Figure 2 The composite screen 120 includes a first screen 121, a second screen 122 and a third screen 123, wherein the first screen 121 and the second screen 122 are respectively provided with a first opening 1211 and a second opening 1221, and the first opening 1211 and the second opening 1221 at least partially overlap. The third screen 123 is disposed between the first opening 1211 and the second opening 1221, and the two side surfaces of the edge of the third screen 123 overlap with the first screen 121 and the second screen 122 respectively, and the overlapping areas of the third screen 123 and the first screen 121 and the second screen 122 are bonded by an adhesive 130, and the third screen 123 is provided with a printing area, and the printing area is used for printing patterns. In the embodiment of the present application, by bonding the edge of the third screen 123 between the first screen 121 and the second screen 122, the strength of the bonding between the third screen 123 and the first screen 121 and the second screen 122 can be strengthened, thereby improving the service life of the composite screen 120.
[0028] Specifically, in some embodiments, the first opening 1211 and the second opening 1221 may have the same shape and size, for example, the first opening 1211 and the second opening 1221 may be rectangular in shape. The first opening 1211 and the second opening 1221 may also overlap each other.
[0029] In some embodiments, the second wire mesh 122 is made of the same material as the first wire mesh 121, and the third wire mesh 123 is made of a different material than the first wire mesh 121. Specifically, in some embodiments, the first wire mesh 121 and the second wire mesh 122 are polymer wire meshes, and the third wire mesh 123 is a metal wire mesh.
[0030] Specifically, in some embodiments, the polymer mesh is a nylon mesh, a polyester mesh, a polyurethane mesh, a stainless steel mesh or a nickel-plated polyester mesh. Among them, the nylon mesh is a monofilament fabric, which is composed of nylon 6 or nylon 66 chemical fiber monofilaments, has high strength and water resistance, corrosion resistance and wear resistance, long service life, smooth surface, good ink permeability and resilience, and appropriate softness. Polyester mesh has two types: monofilament and multifilament. Polyester mesh has the advantages of high temperature resistance, stable physical properties, low tensile strength, strong elasticity, low moisture resistance, strong solvent resistance, strong drug resistance, strong acid resistance, long service life and low price. Stainless steel mesh has the advantages of good dimensional stability, fine wire diameter, large opening, good ink permeability, strong wear resistance, good heat resistance and good chemical corrosion resistance, and is suitable for hot-melt printing. The nickel-plated polyester screen is made by plating a layer of metal nickel with a thickness of 2 to 5 microns on a monofilament polyester screen. It has the advantages of polyester screen and stainless steel screen, and can produce a high-tension, low-elongation screen printing screen 100, improving the shortcomings of the metal screen loosening due to metal fatigue and the poor bonding between the polyester screen and the template. It has good film adhesion, resilience, wear resistance, ink permeability, conductivity and antistatic properties, and is suitable for high-precision screen printing.
[0031] Specifically, in some embodiments, the first screen 121 and the second screen 122 are polyurethane screens, and the third screen 123 is a stainless steel screen. The third screen 123 is made of steel wire, has high elastic deformation resistance, high tension and good rigidity, so as to reduce the deformation or loss of the printed image caused by screen deformation and screen burst during printing. The polyurethane screen with good elasticity around the inner side of the screen frame 110 is used to withstand the tension of the screen and the pressure of printing, so as to reduce the deformation of the stainless steel screen set in the middle of the screen printing screen 100.
[0032] In other embodiments, the first screen 121, the second screen 122 and the third screen 123 are made of the same material; at the same time, the mesh number of the second screen 122 and the first screen 121 is the same, and the mesh number of the third screen 123 is higher than the mesh number of the first screen 121. The mesh number refers to the number of mesh holes per square centimeter of the screen. Specifically, the first screen 121, the second screen 122 and the third screen 123 can be polymer screens or metal screens, such as stainless steel screens. The composite screen 120 provided in this embodiment has extremely high strength and precision during the printing process, and has extremely strong resistance to fatigue deformation and plastic deformation.
[0033] In the embodiment of the present application, the mesh frame 110 is mainly used to fix the composite wire mesh 120 after stretching and expansion. The mesh frame 110 needs to have a certain strength to ensure that the tension at all places on the surface of the composite wire mesh 120 is the same. In some embodiments, the mesh frame 110 can be a wooden mesh frame, a metal mesh frame or a plastic mesh frame; among them, the wooden mesh frame has the advantages of simple production, light weight, convenient operation, and low price. The metal mesh frame can be a hollow aluminum alloy frame; the hollow aluminum alloy mesh frame has the advantages of easy operation, high strength, not easy to deform and rust, strong solvent resistance and water resistance, and beautiful appearance.
[0034] In some embodiments, the shape of the screen frame 110 can be any suitable shape, for example, a polygon, etc. In some embodiments of the present application, the shape of the screen frame 110 is a rectangle; the screen frame 110 is surrounded by four side strips, and a window is formed in the middle of the four side strips; the shape of the composite screen 120 is adapted to the shape of the screen frame 110, and is also a rectangle. The edge of the composite screen 120 can be specifically bonded to the screen frame 110 by an adhesive (such as glue). The adhesive can specifically be polyurethane room temperature curing glue. Compared with ultraviolet light curing glue (UV glue), using polyurethane room temperature curing glue as an adhesive can simplify the manufacturing process of the screen printing screen, and there is no need to use UV glue curing equipment, thereby reducing the manufacturing cost of the screen printing screen.
[0035] In some embodiments, the screen frame 110 has a central axis, and the screen frame 110 is symmetrical about the central axis. Specifically, the first screen 121 includes a first warp and a first weft, and the first screen 121 is woven from the first warp and the first weft, and the first warp and the first weft are perpendicular to each other. The second screen 122 includes a second warp and a second weft, and the second screen 122 is woven from the second warp and the second weft, and the second warp and the second weft are perpendicular to each other. In this embodiment, in order to make the force of the composite screen 120 more uniform and improve the stability of the composite screen 120, the first warp and the first weft are symmetrical along the central axis of the screen frame 110, and the second warp and the second weft are also symmetrical along the central axis of the screen frame 110. This embodiment can make the force of the composite screen 120 more uniform, improve the stability of the composite screen 120, and improve the printing accuracy of the screen printing screen frame 110.
[0036] For example, in Figure 3 In the figure, the central axis of the mesh frame 31 is 32, the mesh frame 31 is symmetrical about the central axis 32, and the warp lines 33 and the weft lines 34 are symmetrical about the central axis 32, wherein the warp lines 33 and the weft lines 34 can be used to represent the first warp lines and the first weft lines, respectively, or can be used to represent the second warp lines and the second weft lines, respectively. The third screen 35 is located in the central area of the mesh frame 31.
[0037] In some embodiments, in order to further improve the stability of the composite wire mesh 120, the angles between the first warp and the second warp and the central axis are both acute angles. For example, the angles between the first warp and the second warp and the central axis can be 45°.
[0038] In some embodiments, the first opening 1211 and the second opening 1221 are in the shape of a polygon, and two adjacent sides of the polygon are connected by an arc angle 140. This embodiment can reduce the possibility that the third screen 123 is cracked at the angle between two adjacent sides of the first opening 1211 or the second opening 1221 due to uneven force during printing.
[0039] In the embodiment of the present application, the screen printing screen 100 includes a first screen 121, a second screen 122 and a third screen 123. The defects of a single screen can be effectively improved by using the first screen 121, the second screen 122 and the third screen 123 together to form a composite screen 120. At the same time, the first screen 121 and the second screen 122 are respectively provided with a first opening 1211 and a second opening 1221, and the third screen 123 is arranged between the first opening 1211 and the second opening 1221. The two side surfaces of the edge of the third screen 123 overlap with the first screen 121 and the second screen 122 respectively; the embodiment of the present application can improve the bonding strength between the third screen 123 and the first screen 121 and the second screen 122 by bonding the overlapping area of the third screen 123 to the first screen 121 and the second screen 122, effectively improve the problem that the bonding part of the composite screen 120 is easy to crack, and improve the service life of the screen printing screen 100.
[0040] The present application also provides a screen printing device. Figure 4 A schematic diagram of the structure of a screen printing device 400 is shown. Figure 4 As shown, the screen printing device 400 includes a scraper 410 and a screen printing plate 420 provided in the above embodiment, wherein the scraper 410 is used to scrape ink in the printing area of the screen printing plate 420 to allow the ink to pass through the mesh holes in the printing area, thereby printing a pattern.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A screen printing screen, characterized in that: The screen printing screen comprises: Screen frame; A first wire mesh and a second wire mesh, wherein the edge of the first wire mesh and the edge of the second wire mesh are fixed to the same side of the mesh frame, the first wire mesh and the second wire mesh are respectively provided with a first opening and a second opening, and the first opening and the second opening at least partially overlap; A third screen, wherein the third screen is arranged between the first opening and the second opening, the two side surfaces of the edge of the third screen overlap with the first screen and the second screen respectively, the overlapping areas of the third screen, the first screen and the second screen are bonded by an adhesive, and the third screen is provided with a printing area.
2. The screen printing screen according to claim 1, characterized in that: The screen frame has a central axis, and the screen frame is symmetrical about the central axis; The first wire mesh includes a first warp and a first weft, and the first warp and the first weft are symmetrical about the central axis; The second wire mesh includes second warp threads and second weft threads, and the second warp threads and the second weft threads are symmetrical along the central axis.
3. The screen printing screen according to claim 2, characterized in that: The included angles between the first meridian and the second meridian and the central axis are both acute angles.
4. The screen printing screen according to claim 1, characterized in that: The overlapping area is in the shape of a polygon, and any two adjacent sides of the polygon are connected by an arc angle.
5. The screen printing screen according to any one of claims 1 to 4, characterized in that: The second wire mesh is made of the same material as the first wire mesh, and the third wire mesh is made of a different material from the first wire mesh.
6. The screen printing screen according to claim 5, characterized in that: The first wire mesh and the second wire mesh are polymer wire meshes, and the third wire mesh is a metal wire mesh.
7. The screen printing screen according to claim 6, characterized in that: The polymer wire mesh is a nylon wire mesh, a polyurethane wire mesh, a terylene wire mesh or a polyester wire mesh; The metal wire mesh is a stainless steel wire mesh, a nickel alloy wire mesh or a tungsten steel alloy wire mesh.
8. The screen printing screen according to claim 5, characterized in that: The adhesive is polyurethane glue that cures at room temperature.
9. The screen printing screen according to any one of claims 1 to 4, characterized in that: The first wire mesh, the second wire mesh and the third wire mesh are made of the same material; The mesh number of the second wire mesh is the same as the mesh number of the first wire mesh, and the mesh number of the third wire mesh is higher than the mesh number of the first wire mesh.
10. A screen printing device, characterized in that: The device comprises: scraper; and, The screen printing screen according to any one of claims 1 to 9; Wherein, the scraper is used to scrape ink on the printing area of the screen printing screen.