CN216400887U

CN216400887U - Anti-pressing sheet system for solar cell screen printing

Info

Publication number: CN216400887U
Application number: CN202123139682.9U
Authority: CN
Inventors: 高英杰; 师海峰; 白焱辉; 黄金; 冀杨洲; 李莎; 贾慧君
Original assignee: Jinneng Photovoltaic Technology Co Ltd
Current assignee: Jinneng Photovoltaic Technology Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-04-29
Anticipated expiration: 2031-12-14

Abstract

The utility model relates to a pressing sheet prevention system for screen printing of a solar cell, and belongs to the technical field of screen printing. Including a plurality of air knife, a plurality of air knife is fixed in the positive both sides of material loading basket of flowers through the mount pad, the direction of air knife is parallel with the direction of motion of material loading basket of flowers and perpendicular with the direction of motion of material loading belt, the angle between the air-out direction of air knife and the play piece direction of material loading basket of flowers is 15 ~ 75, the air knife lower extreme is less than the bottom of material loading basket of flowers motion stroke, the air outlet of fan is connected through the tuber pipe to the air intake of a plurality of air knife, install the automatic control valve on the tuber pipe, fan and automatic control valve all are connected with controlling means. The utility model can ensure that the foreign matter is blown cleanly, simultaneously can avoid damaging the battery piece due to the inclination of the air flow direction, can effectively reduce the problems of cross cracking and the like caused during printing, and reduces the probability of plate collapse of the foreign matter of the screen printing plate, thereby reducing the loss rate of the battery piece and the screen printing plate in the production process and reducing the production cost.

Description

Anti-pressing sheet system for solar cell screen printing

Technical Field

The utility model relates to the technical field of screen printing, in particular to a pressing-resistant sheet system for screen printing of a solar cell.

Background

In the photovoltaic industry, screen printing is mainly applied to electrode forming of solar cells, and printing is carried out by utilizing the basic principle that part of meshes of a screen pattern is transparent to slurry and the other part of meshes of a non-image-text part is not transparent to the slurry. The screen printing is introduced in the production of the battery piece, so that the production cost of the battery piece is greatly reduced. However, in the manufacturing process of the solar cell, during the screen printing, foreign matters such as fragments and dust are easy to cause the problems of the cell, such as cross-cracking, etc., and the problems of the screen cloth tearing and the foreign matter collapsing, etc., thereby causing the endless waste of the cell, the printing paste and the screen, and increasing the unnecessary cost.

To above-mentioned problem, the foreign matter in the common processing mode is mostly the manual inspection basket of flowers and increases the air knife parallel with the material loading belt in material loading belt top, sweeps above the battery piece through the air knife to reach the purpose of cleaing away the foreign matter. However, these methods cannot effectively remove the foreign matters on the surface of the battery piece. In the actual production process, the problems of cross cracking and screen plate collapse caused by foreign matters adsorbed on the surface are found to be endless, which causes unnecessary loss of a large number of cells, slurry and screen plates, and increases the production cost of solar cells.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a pressing-proof sheet system for screen printing of a solar cell. The technical scheme is as follows:

the utility model provides a prevent pressing piece system for solar cell screen printing, it includes a plurality of air knife, a plurality of air knife is fixed in the positive both sides of material loading basket of flowers through the mount pad, the direction of air knife is parallel and perpendicular with the direction of motion of material loading belt with the direction of motion of material loading basket of flowers, the angle between the air-out direction of air knife and the play piece direction of material loading basket of flowers is 15 ~ 75, the air knife lower extreme is less than the bottom of material loading basket of flowers motion stroke, the air outlet of fan is connected through the tuber pipe to the air intake of a plurality of air knife, install the automatic control valve on the tuber pipe, fan and automatic control valve all are connected with controlling means.

Optionally, an angle between an air outlet direction of the air knife and a sheet outlet direction of the feeding flower basket is 45 degrees, a horizontal distance between the air knife and a first vertical frame of the front side surface of the feeding flower basket is 15cm, and the horizontal distance between the air knife and the first vertical frame of the front side surface of the feeding flower basket is smaller than a horizontal distance between the air knife and a second vertical frame of the front side surface of the feeding flower basket.

Optionally, the device comprises two air knives symmetrically arranged on two sides of the front surface of the feeding flower basket.

Optionally, the automatic control valve is an electric valve or a pneumatic valve.

By means of the scheme, the air knives are arranged on the two sides of the front face of the feeding flower basket, the direction of the air knives is parallel to the moving direction of the feeding flower basket and perpendicular to the moving direction of the feeding belt, the air quantity blown to the feeding flower basket is moderate, the battery piece cannot be displaced, the battery piece can be prevented from being damaged due to the fact that the air flow direction is inclined while the foreign matter is blown cleanly, the probability that the foreign matter of the screen printing plate collapses is reduced due to the fact that the problems of cross cracking and the like caused in printing can be effectively reduced, the loss rate of the battery piece and the screen printing plate in the production process is reduced, and production cost is reduced.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the system components of the present invention.

Fig. 2 is a plan view showing a positional relationship among the air knife, the loading basket and the loading belt in fig. 1.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 and 2, the anti-pressing system for screen printing of solar cells provided by the utility model comprises a plurality of air knives 1, wherein the air knives 1 are fixed on two sides of the front surface of a feeding flower basket 2 through mounting seats, the direction of each air knife 1 is parallel to the moving direction of the feeding flower basket 2 and is vertical to the moving direction of a feeding belt 3 (consistent with the sheet discharging direction of the feeding flower basket 2), the angle between the air outlet direction of each air knife 1 and the sheet discharging direction of the feeding flower basket 2 is 15-75 degrees, the lower end of each air knife 1 is lower than the bottom end of the moving stroke of the feeding flower basket 2, the air inlets of the air knives 1 are connected with the air outlet of a fan 5 through air pipes 4, automatic control valves 6 are mounted on the air pipes 4, and the fan 5 and the automatic control valves 6 are both connected with a control device. Wherein, the control device is a PLC or a singlechip and the like.

Specifically, the control device controls the opening and closing of the blower 5, and controls the opening degree of the automatic control valve 6. When the air knife is used, the control device controls the fan 5 to be opened and controls the automatic control valve 6 to be opened for a certain angle, so that air from the fan 5 reaches the air knife 1 through the air pipe 4 and is blown out from the air outlet of the air knife 1. The air blown out from the air outlet of the air knife 1 effectively sweeps the battery pieces in the feeding flower basket 2, so that the aim of removing foreign matters on the battery pieces is fulfilled.

Optionally, an angle between an air outlet direction of the air knife 1 and a sheet outlet direction of the feeding flower basket 2 is 45 degrees, a horizontal distance between the air knife 1 and a first vertical frame on the front side surface of the feeding flower basket 2 is 15cm, and the horizontal distance between the air knife 1 and the first vertical frame on the front side surface of the feeding flower basket 2 is smaller than the horizontal distance between the air knife 1 and a second vertical frame on the front side surface of the feeding flower basket 2. The first vertical frame on the front side surface of the feeding flower basket 2 refers to a vertical frame close to the air knife 1 in the front side surface of the feeding flower basket 2. That is, the horizontal distance between the air knife 1 on the same side of the feeding belt 3 and the vertical frame on the front side of the feeding flower basket 2 is 15 cm.

Optionally, the anti-pressing system for the screen printing of the solar cell comprises two air knives 1, wherein the two air knives 1 are symmetrically installed on two sides of the front surface of the feeding flower basket 2, so that the air quantity reaching the feeding flower basket 2 from two sides is equivalent, and the uniform blowing of the cell pieces on the feeding flower basket 2 is ensured.

Production practice proves that when the angle between the air outlet direction of the air knife 1 and the sheet outlet direction of the feeding flower basket 2 is 45 degrees, and the horizontal distance between the air knife 1 and the first vertical frame on the front side surface of the feeding flower basket 2 is 15cm, the air quantity blown to the feeding flower basket 2 is moderate, so that the battery sheet is displaced, the situation that the battery sheet is damaged due to the inclination of the air flow direction when foreign matters are blown cleanly can be ensured, and the comprehensive blowing of the battery sheet in the feeding flower basket 2 is realized.

Optionally, the automatic control valve 6 is an electric valve or a pneumatic valve.

All the optional technical schemes can be combined at will, and the structure after one-to-one combination is not explained in detail in the utility model.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a prevent pressing piece system for solar cell screen printing, a serial communication port, including a plurality of air knife (1), a plurality of air knife (1) is fixed in the front both sides of material loading basket of flowers (2) through the mount pad, the direction of air knife (1) is parallel and perpendicular with the direction of motion of material loading belt (3) with the direction of motion of material loading basket of flowers (2), the angle between the air-out direction of air knife (1) and the play piece direction of material loading basket of flowers (2) is 15 ~ 75, air knife (1) lower extreme is less than the bottom of material loading basket of flowers (2) motion stroke, the air intake of a plurality of air knife (1) passes through the air outlet of tuber pipe (4) connection fan (5), install automatic control valve (6) on the (4), fan (5) and automatic control valve (6) all are connected with controlling means.

2. The pressing-proof system for screen printing of solar cells according to claim 1, wherein the angle between the air outlet direction of the air knife (1) and the sheet outlet direction of the feeding basket (2) is 45 degrees, the horizontal distance between the air knife (1) and the first vertical frame of the front side of the feeding basket (2) is 15cm, and the horizontal distance between the air knife (1) and the first vertical frame of the front side of the feeding basket (2) is smaller than the horizontal distance between the air knife (1) and the second vertical frame of the front side of the feeding basket (2).

3. The pressing-proof sheet system for screen printing of solar cells as claimed in claim 1, comprising two air knives (1), wherein the two air knives (1) are symmetrically arranged on two sides of the front surface of the charging basket (2).

4. The anti-flaking system for solar cell screen printing according to claim 1 characterized in that the automatic control valve (6) is an electric or pneumatic valve.