CN-224197462-U - Printing steel plate capable of eliminating tension difference

CN224197462UCN 224197462 UCN224197462 UCN 224197462UCN-224197462-U

Abstract

The utility model discloses a printing steel plate capable of eliminating tension difference, which comprises a printing plate frame and a printing steel plate, wherein the printing steel plate is stretched on the printing plate frame through a stretching silk screen, the printing steel plate comprises a printing area and a tension balance area, the tension balance area is positioned at two sides of the printing area, the printing area is provided with a plurality of steel plate wire grooves, each steel plate wire groove comprises a material containing wire groove and a scraping wire groove, each scraping wire groove is positioned at the bottom of the corresponding material containing wire groove, the tension balance area is provided with an arc-shaped tension balance groove or/and Kong Xingzhang force balance groove, and the arc-shaped tension balance groove or/and Kong Xingzhang force balance groove in a through groove structure is filled with an elastic filling structure. The circle centers of the circles where the outer arc groove edge and the inner arc groove edge of the arc tension balance groove are located on the symmetrical lines of the adjacent steel plate wire grooves. At least one plate surface of the tension balance area is coated with a tension balance coating. The printing steel plate improves the adaptability of the tension of the steel plate in the scraping process of the scraper, and is beneficial to the accurate printing of electrode grid lines.

Inventors

CHEN HOU
WANG YANG
MA YUNMING
XIE YAFEI

Assignees

江苏盛矽精密技术股份有限公司

Dates

Publication Date: 20260505
Application Date: 20250527

Claims (10)

1. A printing steel plate capable of eliminating tension difference comprises a printing plate frame (1) and a printing steel plate (3), wherein the printing steel plate (3) is stretched on the printing plate frame (1) through a stretching silk screen (2), the printing steel plate is characterized in that the printing steel plate (3) comprises a printing area (31) and a tension balancing area (32), the tension balancing area (32) is located on two sides of the printing area (31), the printing area (31) is provided with a plurality of steel plate trunking (4), the steel plate trunking (4) comprises a material containing trunking (42) and a scraping silk screen (41), the scraping silk screen (41) is located at the bottom of the material containing trunking (42), the tension balancing area (32) is provided with an arc-shaped tension balancing groove (5) or/and a Kong Xingzhang force balancing groove (6), an elastic filling structure is filled in the arc-shaped tension balancing groove (5) or/and the Kong Xingzhang force balancing groove (6) in a through groove structure, the width L between one side edge of the printing steel plate (3) provided with the tension balancing area (32) and the stretching frame (1) and the width L (2) of the printing steel plate (1) is equal to the width L2 of the printing plate frame (2) of the printing steel plate (1).
2. The printing steel plate capable of eliminating tension difference as defined in claim 1, wherein the notch width a1=0.008 mm-0.015mm of the scraping wire groove (41), the groove width of the scraping wire groove (41) is A1, and the groove width of the material containing wire groove (42) is A2, a2= (10-20) A1.
3. Printing steel plate capable of eliminating tension difference according to claim 1 or 2, characterized in that the steel plate wire grooves (4) are arranged along the scraping direction of the scraper, and the material containing wire grooves (42) are flat bottom grooves.
4. The printing steel plate capable of eliminating tension difference as defined in claim 1, wherein the radius R2 of the circle of the outer side groove edge of the arc-shaped tension balance groove (5) is equal to the radius R1 of the circle of the inner side groove edge of the arc-shaped tension balance groove (5), and R2 is larger than R1.
5. The printing steel plate capable of eliminating tension difference according to claim 4, wherein the circle centers of the circles of the outer circular arc groove edge and the inner circular arc groove edge of the arc tension balance groove (5) are positioned on the symmetrical line of the adjacent steel plate wire grooves (4).
6. The printing steel plate capable of eliminating tension difference as defined in claim 1, wherein the Kong Xingzhang force balancing grooves (6) at least comprise a row of through grooves, and the hole-shaped tension balancing grooves (6) are circular or rectangular or triangular through grooves.
7. The printing steel plate capable of eliminating tension difference as defined in claim 1, wherein at least one plate surface of the tension balancing area (32) is coated with a tension balancing coating (7), and the tension balancing coating (7) is coated on the arc-shaped tension balancing grooves (5) and Kong Xingzhang force balancing grooves (6).
8. The printing steel plate capable of eliminating tension difference according to claim 1, wherein the arc-shaped tension balancing grooves (5) and Kong Xingzhang force balancing grooves (6) are arranged along the doctor blade scraping direction, and the arc-shaped tension balancing grooves (5) are positioned at the inner sides of the hole-shaped tension balancing grooves (6).
9. The printing steel plate of claim 1, wherein the elastic filling structure is filled with silicone rubber or thermoplastic elastomer or hydrogel.
10. The printing steel plate capable of eliminating tension difference according to claim 1, wherein L2= (1.5-2.5) L1 of the tension screen (2), the printing steel plate (3) is a thin metal plate, and the thickness h1=0.01-0.03 mm of the printing steel plate (3).

Description

Printing steel plate capable of eliminating tension difference Technical Field The utility model relates to a printing template for high-precision conductive electrode grid lines of solar photovoltaic cells, in particular to a precision printing template structure for a thin metal substrate. Background The solar photovoltaic cell is designed with very fine grid line electrodes, the more precise the grid line of the electrode on the cell is, the higher the power generation efficiency is, the more precise grid line printing is asymptotically extremely similar to the structural type and manufacturing process of the traditional screen printing plate, and the breakthrough is difficult. Therefore, in recent years, a photovoltaic cell piece printing steel plate with a thin metal substrate instead of a metal wire mesh appears on the market, and the printing steel plate does not have a mesh formed by alternately weaving the warps and the wefts of the traditional wire mesh, so that the opening ratio of the printing template is greatly improved, the ink permeability is better, the manufacturing cost is effectively reduced, and the development of a battery grid line electrode to a miniaturization direction is facilitated. Although steel plate printing has its own advantage relative to screen printing, in the doctor blade printing process, the tension change on the steel plate surface can form adverse effects on printing quality, when the doctor blade scrapes silver paste into a printing wire slot from the printing direction, as the tension on two sides of the printing wire slot can be changed continuously along with the movement of the doctor blade, the tension of the continuously changed steel plate forms unbalanced tensioning on two sides of the printing wire slot, so that the shape of the printing wire slot can be deformed and edge-curling phenomenon, the appearance of a printing grid line corresponding to the wire slot is directly influenced, and the integrity of a grid line pattern is directly influenced, so that slurry splashing, diffusion, uneven thickness and other phenomena are generated at the edges of two sides of the printing wire slot, and the defects of broken wire or uneven thickness of the printing grid line electrode are caused, so that the impedance of the electrode pattern is increased, and the conversion efficiency of a battery piece is lowered. Disclosure of utility model Aiming at the defects existing in the prior art, the technical problem to be solved by the utility model is to provide the printing steel plate capable of eliminating tension difference, and the printing steel plate can improve the adaptive performance of the tension of the steel plate in the scraping process of the scraper and avoid the deformation and edge tilting of a steel plate printing trunking. In order to solve the technical problems, the printing steel plate capable of eliminating tension difference comprises a printing plate frame and a printing steel plate, wherein the printing steel plate is stretched on the printing plate frame through a stretching silk screen, the printing steel plate comprises a printing area and a tension balancing area, the tension balancing area is positioned on two sides of the printing area, the printing area is provided with a plurality of steel plate wire grooves, each steel plate wire groove comprises a material containing wire groove and a scraping wire groove, each scraping wire groove is positioned at the bottom of the corresponding material containing wire groove, the tension balancing area is provided with an arc-shaped tension balancing groove or/and Kong Xingzhang force balancing groove which is in a through groove structure, an elastic filling structure is filled in the arc-shaped tension balancing groove or/and Kong Xingzhang force balancing groove, the stretching silk screen between one side of the printing steel plate, which is provided with the tension balancing area, and the printing plate frame is L1, and the stretching silk screen between the other side of the printing steel plate and the printing plate frame is L2, and L2> L1. Preferably, the groove width A1=0.008 mm-0.015mm of the scraping wire groove, the groove width of the scraping wire groove is A1, and the groove width of the material containing wire groove is A2, A2= (10-20) A1. Preferably, the steel plate wire grooves are arranged along the scraping direction of the scraper, and the material containing wire grooves are flat bottom grooves. Preferably, the radius R2 of the circle where the outer side groove edge of the arc-shaped tension balance groove is located, and the radius R1 of the circle where the inner side groove edge of the arc-shaped tension balance groove is located is R2, wherein R2 is larger than R1. Preferably, the circle centers of the circles where the outer side arc groove edge and the inner side arc groove edge of the arc tension balance groove are located on the symmetrical lines of the adjacent st