A large-size screen plate frame applied to a screen printing machine

Abstract

The utility model discloses a large -size screen board frame for silk screen printing machine relates to ceramic rock board processing technical field, and large -size screen board frame includes four edge frame strips and has the screen printing of preset board formula pattern, and each edge frame strip is connected to form square frame head to tail, and the screen printing is fixed in square frame, the plane area of square frame is greater than 1200mm 1200mm, and four inner corner positions of square frame are equipped with the inclined connecting rod strip, and the inside of each edge frame strip has a hollow tube cavity, and the hollow tube cavity is equipped with the inside reinforcing rib of through whole hollow tube cavity. The rigidity and hardness of large -size screen board frame are improved as a whole in this application, can effectively prevent the phenomenon that large -area printing glaze leads to pattern deformation, ghosting, unable to reproduce, improves the durability of large -size screen board frame.

Description

Technical Field

[0001] This utility model relates to the field of ceramic processing technology, and in particular to a large-size screen frame for use in screen printing machines. Background Technology

[0002] Conventional screen printing machines are devices for printing text and images. A screen is set within a frame, and during operation, a rubber squeegee scrapes the liquid enamel or fine powder on the screen, allowing it to pass through the mesh and be printed onto the substrate. However, because the liquid enamel is essentially liquid and the mesh size is limited, conventional screen printing machines can only print patterns, not dry granules. Existing dry granule machines can only apply solid dry granules to the entire plate, and cannot create pattern effects.

[0003] It is evident that existing ceramic pattern processing equipment such as screen printing machines and dry granulation machines cannot meet the requirements for forming patterns on large-format ceramic slabs (1200mm×2400mm×9-20mm, 1600mm×3200mm×9-20mm), especially the need to express the shapes of various sizes of dry granules and glazes.

[0004] Therefore, there is an urgent need to develop a large-size screen frame suitable for screen printing machines, which can not only apply dry granules of different specifications and shapes to enrich the expression of patterns on the surface of ceramic tiles, but also overcome the problems of frame deformation, pattern deformation, durability, and repeatability of applied patterns caused by large-size application. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a large-size screen frame for use in screen printing machines.

[0006] The purpose of this utility model is achieved by the following technical solution: a large-size screen frame for screen printing machines, comprising four frame strips and a screen with a preset pattern, wherein each frame strip is connected end to end to form a square frame, and the screen is fixed inside the square frame; the planar area of ​​the square frame is greater than 1200mm×1200mm, and inclined connecting rods are provided at the four inner corners of the square frame; each frame strip has a hollow cavity inside, and the hollow cavity is provided with internal reinforcing ribs that run through the entire hollow cavity.

[0007] Furthermore, in the large-size screen frame used in the screen printing machine, the internal reinforcing ribs are composed of multiple staggered support pieces, and the cross-section of the internal reinforcing ribs is one of X-shaped, cross-shaped, or rice-shaped.

[0008] Furthermore, in the large-size screen frame used in the screen printing machine, the border strip and the internal reinforcing ribs are integrally formed.

[0009] Furthermore, in the large-size screen frame used in the screen printing machine, each of the frame strips, internal reinforcing ribs and / or inclined connecting rods is made of aluminum profiles.

[0010] Furthermore, in the large-size screen frame used in the screen printing machine, the border strips include two long border strips and two short border strips, with each long border strip and short border strip connected end to end to form a rectangular frame.

[0011] Furthermore, in the large-size screen frame used in the screen printing machine, the rectangular frame has a planar area of ​​2800mm × 4500mm.

[0012] Furthermore, in the large-size screen frame used in the screen printing machine, the thickness of the border strip and / or the inclined connecting rod strip is 2-3mm, and the thickness of the internal reinforcing rib is 1-2mm.

[0013] Furthermore, in the large-size screen frame used in the screen printing machine, the width of the border strip is 80-120mm and the thickness is 40-50mm.

[0014] Furthermore, in the large-size screen frame used in the screen printing machine, the screen uses a tension ≥25N / cm. 2 High-tensile polyester mesh.

[0015] Furthermore, in the large-size screen frame used in the screen printing machine, the screen includes a central hollow area and a surrounding dense area. The entire surface of the screen is coated with photosensitive emulsion, and the central hollow area forms a hollow pattern forming area through exposure.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This application improves the rigidity and hardness of the screen frame by designing the structure of the border strips, while increasing the overall size of the screen frame. Specifically, the screen frame is designed as a hollow structure, and internal reinforcing ribs are set in the hollow cavity of each border strip, which runs through the entire hollow cavity. An inclined connecting rod is fixed between two adjacent border strips. This effectively prevents the deformation of the pattern, ghosting, and unreproducible phenomena caused by large-area printing of enamel, and improves the durability of large-size screen frames.

[0018] 2. This application designs the shape of the internal reinforcing ribs, preferably using a cross-shaped internal reinforcing rib structure. This not only serves as the most suitable rigid reinforcing structure, but also meets the installation requirements of the wire mesh tension for large spans, thus saving on material costs.

[0019] 3. The integral molding process between the frame strip and the internal reinforcing ribs in this application can greatly improve the strength and rigidity of the overall large-size mesh frame.

[0020] 4. Compared with metal materials such as stainless steel and iron, aluminum profiles are lightweight alloy materials. This application selects aluminum profiles as the main structural material of the mesh frame, which can meet the requirements of applying dry granules or glaze to large-size ceramic plates, avoid the phenomenon of bending and sinking deformation in the middle of the mesh frame during the material application process, and improve the uniformity of material application.

[0021] 5. In this application, the inventors optimized parameters such as the thickness and width of the frame strip, internal reinforcing ribs, and inclined connecting rod strips, all based on the rigidity requirements of large-span fabrics and the cost of materials, and made the optimal parameter selection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a large-size screen frame applied to a screen printing machine, according to a preferred embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional schematic diagram of the frame strip in a preferred embodiment of the present invention.

[0024] In the picture:

[0025] 100. Large-size screen frame for use in screen printing machines;

[0026] 1. Border strip; 11. Hollow cavity; 12. Long border strip; 13. Short border strip;

[0027] 2. Silk screen; 21. Central openwork area; 22. Dense surrounding area;

[0028] 3. Inclined connecting rod;

[0029] 4. Internal reinforcing ribs; 41. Support plate. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] like Figure 1-2As shown, a large-size screen frame 100 for use in a screen printing machine includes four frame strips 1 and a screen 2 with a preset pattern. The frame strips 1 are connected end to end to form a square frame, and the screen 2 is fixed inside the square frame. The planar area of ​​the square frame is greater than 1200mm×1200mm. Inclined connecting rods 3 are provided at the four inner corners of the square frame. Each frame strip 1 has a hollow cavity 11 inside, and the hollow cavity 11 is provided with internal reinforcing ribs 4 that run through the entire hollow cavity.

[0032] This application improves the rigidity and hardness of the screen frame by designing the structure of the border strip 1, while increasing the overall size of the screen frame. Specifically, the screen frame is designed as a hollow structure, and internal reinforcing ribs 4 are set in the hollow cavity of each border strip 1, which runs through the entire hollow cavity 11. An inclined connecting rod 3 is fixed between two adjacent border strips 1. This effectively prevents the deformation of the pattern, ghosting, and inability to reproduce the image caused by printing enamel on a large area, and improves the durability of the large-size screen frame.

[0033] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, the internal reinforcing rib 4 is composed of multiple staggered support pieces 41, and the cross-section of the internal reinforcing rib 4 is one of X-shaped, cross-shaped, or rice-shaped.

[0034] This application designs the shape of the internal reinforcing rib 4, preferably a cross-shaped internal reinforcing rib 4, which can not only serve as the most suitable rigid reinforcing structure, but also meet the tension installation requirements of the wire mesh 2 with a large span, thus saving the material cost.

[0035] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, the border strip 1 and the internal reinforcing rib 4 are integrally formed.

[0036] The integral molding process between the frame strip 1 and the internal reinforcing rib 4 in this application can greatly improve the strength and rigidity of the overall large-size mesh frame.

[0037] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, each of the frame strips 1, internal reinforcing ribs 4 and / or inclined connecting rods 3 is made of aluminum profiles. Compared to metal materials such as stainless steel and iron, aluminum profiles, as a lightweight alloy material, are chosen as the main structural material of the screen frame in this application. This can meet the requirements for applying dry granules or glazes to large-size ceramic plates, avoid bending and sinking deformation in the middle of the screen frame during the fabric application process, and improve the uniformity of fabric application.

[0038] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, the border strip 1 includes two long border strips 12 and two short border strips 13, with each long border strip 12 and short border strip 13 connected end to end to form a rectangular frame.

[0039] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, the rectangular frame has a planar area of ​​2800mm × 4500mm.

[0040] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, the thickness of the border strip 1 and / or the inclined connecting rod strip 3 is 2-3mm, and the thickness of the internal reinforcing rib 4 is 1-2mm.

[0041] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, the width of the frame strip 1 is 80-120mm and the thickness is 40-50mm.

[0042] In this application, the inventors optimized the thickness, width and other parameters of the frame strip 1, internal reinforcing rib 4 and inclined connecting rod strip 3, all based on the rigidity requirements of large-span fabric and the cost of materials, and made the optimal parameter selection.

[0043] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, the screen 2 has a tension ≥25N / cm. 2 High-tensile polyester mesh.

[0044] After improvement, the wire mesh tension in this application is ≥25N / cm. 2 This ensures that the pattern does not deform during printing.

[0045] As a further preferred embodiment, in the large-size screen frame used in the screen printing machine, the screen 2 includes a central hollow area 21 and a surrounding dense area 22. The entire surface of the screen 2 is coated with photosensitive emulsion, and the central hollow area 21 forms a hollow pattern forming area through exposure.

[0046] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A large-size screen frame for use in a screen printing machine, characterized in that, It includes four frame strips and a wire mesh with a preset pattern. The frame strips are connected end to end to form a square frame, and the wire mesh is fixed inside the square frame. The square frame has a plane area greater than 1200mm × 1200mm. Inclined connecting rods are provided at the four inner corners of the square frame. Each frame strip has a hollow cavity inside, and the hollow cavity is provided with internal reinforcing ribs that run through the entire hollow cavity.

2. The large-size screen frame for a screen printing machine as described in claim 1, characterized in that, The internal reinforcing rib is composed of multiple staggered support plates, and the cross-section of the internal reinforcing rib is one of X-shaped, cross-shaped, or rice-shaped.

3. The large-size screen frame for screen printing machines as described in claim 1, characterized in that, The border strip and the internal reinforcing ribs are integrally formed.

4. The large-size screen frame for a screen printing machine as described in claim 1, characterized in that, Each of the aforementioned frame strips, internal reinforcing ribs, and / or inclined connecting rods is an aluminum frame made of aluminum profiles.

5. The large-size screen frame for a screen printing machine as described in claim 1, characterized in that, The border strip includes two long border strips and two short border strips, with each long and short border strip connected end to end to form a rectangular frame.

6. The large-size screen frame for a screen printing machine as described in claim 5, characterized in that, The rectangular frame has a planar area of ​​2800mm × 4500mm.

7. The large-size screen frame for a screen printing machine as described in any one of claims 1-6, characterized in that, The thickness of the frame strip and / or the inclined connecting rod strip is 2-3mm, and the thickness of the internal reinforcing rib is 1-2mm.

8. The large-size screen frame for a screen printing machine as described in any one of claims 1-6, characterized in that, The width of the border strip is 80-120mm and the thickness is 40-50mm.

9. The large-size screen frame for a screen printing machine as described in any one of claims 1-6, characterized in that, The wire mesh uses high-tension polyester wire mesh with tension ≥ 25 N / cm 2 .

10. The large-size screen frame for a screen printing machine as described in any one of claims 1-6, characterized in that, The screen includes a central open area and a surrounding dense area. The entire surface of the screen is coated with photosensitive emulsion, and the central open area forms a hollow pattern through exposure.

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