CN217415198U

CN217415198U - Printing scraper mechanism

Info

Publication number: CN217415198U
Application number: CN202220624679.1U
Authority: CN
Inventors: 李宁
Original assignee: Jiangsu Runyang Century Photovoltaic Technology Co Ltd
Current assignee: Jiangsu Runyang Century Photovoltaic Technology Co Ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-09-13
Anticipated expiration: 2032-03-22

Abstract

The application provides a printing scraper mechanism, which comprises a scraper and an ink return knife, wherein the scraper and the ink return knife are respectively arranged on a printing machine through a lifting cylinder module; the ink return surface is opposite to the scraping strip fixing surface. This scraper mechanism is an inclined screen printing scraper, and through designing into the thick thin structure in one end in both ends about scraper and the ink return sword, make scraper and ink return sword surface itself form an inclined plane, when using, in the equal movement time, the contact time of aluminium thick liquid and silicon chip then can be longer to improve disconnected bars and leak thick liquid problem, reduction in production cost, improvement productivity and the yield of improving production.

Description

Printing scraper mechanism

Technical Field

The utility model belongs to the screen printing field especially relates to a printing scraper mechanism.

Background

The manufacture of solar cells requires seven major processes of texturing, diffusion, etching, coating, screen printing and sintering tests. And in the screen printing process, a scraper is used for printing aluminum paste on a silicon wafer through a screen printing plate to form a grid line. With the continuous development of the photovoltaic industry, the productivity of machines is higher and higher, the problems of grid breakage and slurry leakage are more frequent, the yield of the production of the battery piece is directly reduced, and the loss in the aspect of production cost is caused. In daily production, the traditional longitudinal horizontal scraper is easy to break grids and leak slurry due to unstable table top and material abrasion caused by long-time reciprocating motion.

Disclosure of Invention

In view of the above, the utility model provides a printing scraper mechanism, the ink return sword in this printing scraper mechanism is an inclined screen printing scraper, through will return the thick one end thin structure of both ends design into one end about the ink sword, make the relative inclined plane that forms of ink return face of ink return sword, the scraper part is with the same reason, the relative inclined plane that forms of doctor blade stationary plane, when using the hanging sword mechanism of this structure, in the equal movement time, the contact time of aluminium thick liquid and silicon chip then can be longer, thereby improve disconnected bars and leak thick liquid problem, and the reduction in production cost, the yield of improving the productivity and improving production. The specific technical scheme is as follows:

a printing scraper mechanism comprises a scraper and an ink return knife, wherein the scraper and the ink return knife are respectively arranged on a printing machine through a lifting cylinder module; the scraper comprises a scraper seat and a scraper strip, the scraper seat is divided into a scraper strip fixing surface and a moving path fixing surface, the left end and the right end of the scraper seat are different in thickness, an included angle is formed between the scraper strip fixing surface and the plane where the moving path fixing surface is located, and the scraper strip is arranged on the scraper strip fixing surface; the ink returning surface is arranged opposite to the scraping strip fixing surface.

Furthermore, the included angle degree formed by the ink return surface and the plane where the ink return path surface is located is 1-3 degrees, and the included angle degree formed by the scraper strip fixing surface and the plane where the path fixing surface is located is 1-3 degrees.

Furthermore, two ends of the ink return blade body are connected with bent material wings in an extending mode, included angles theta are formed between the bent material wings and the side edges of the two ends of the ink return blade body, and the theta is 75 degrees.

Further, the ink return blade body and the top end of the scraper seat are also provided with fixing lugs.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view showing the overall structure of a printing doctor mechanism;

FIG. 2 is a schematic view of the overall structure of the ink return blade;

FIG. 3 is a schematic view of the overall structure of the doctor blade;

FIG. 4 is a schematic top view of the ink return blade;

FIG. 5 is an enlarged view of A in FIG. 4;

FIG. 6 is a schematic view showing the positional engagement of the ink recovery surface and the fixing surface of the bar;

the device comprises a lifting cylinder module 1, a lifting cylinder module 2, a scraper blade 3, an ink return blade 21, a scraper seat 22, a scraper bar 23, a fixed baffle plate 211, a scraper bar fixing surface 212, a path fixing surface 31, an ink return surface 32, an ink return path surface 33, a bent material wing 34 and a fixing lug.

Detailed Description

The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and are only for the purpose of explaining the present invention, and cannot be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, the printing scraper mechanism of this embodiment includes a scraper 2 and an ink return blade 3, and the scraper 2 and the ink return blade 3 are respectively disposed on the printing machine through a lifting cylinder module 1, and the lifting cylinder module 1 is a mature technology in the prior art and is not described in detail.

As shown in fig. 3, the ink returning blade 2 includes an ink returning blade body, which is divided into an ink returning surface 31 and an ink returning path surface 32, the ink returning surface 31 is a surface contacting the aluminum paste, the ink returning path surface 32 is an opposite surface of the ink returning surface 31, the left and right ends of the ink returning blade body have different thicknesses, and an included angle α is formed between the ink returning surface 31 and the plane of the ink returning path surface 32, as shown in fig. 4 and 5, the included angle α is in a range of 1 to 3 °, and in this embodiment, the included angle α is preferably 1.5 °.

As shown in fig. 2, the scraper 2 includes a scraper seat 21 and a scraper bar 22, the scraper seat 21 is divided into a scraper bar fixing surface 211 and a row path fixing surface 212, the scraper bar 22 is fixed on the scraper bar fixing surface 211, the scraper bar 22 is used for scraping pulp, the thicknesses of the left end and the right end of the scraper seat 21 are different, an included angle α is formed between the scraper bar fixing surface 211 and the row path fixing surface 212, the included angle α is 1-3 degrees, and the included angle α is preferably 1.5 degrees in this embodiment. The bar 22 is fixed to the bar fixing surface 211 by a fixing stopper 23.

The printing scraper mechanism in this embodiment, design into the thick thin structure of one end in one end through the both ends about with scraper 2 and ink return sword 3, make scraper 2 and ink return sword 3's body surface form an inclined plane, ink return face 31 is established as scraping thick liquid face relatively parallel with scraping strip stationary plane 211, as figure 6, when using, in the same movement time, compare in the same scraper of both ends thickness about current and ink return sword, the contact time of using this scraper mechanism aluminium thick liquid and silicon chip then can be longer, thereby improve disconnected bars and hourglass thick liquid problem, reduce manufacturing cost, improve the productivity and improve the yield of production.

Furthermore, the two ends of the ink return knife are connected with bent material wings 33 in an extending mode, the bent material wings 33 and the side edges of the two ends of the ink return knife form included angles theta which are 75 degrees, outflow of ink and slurry can be effectively prevented, and the ink return uniformity effect is improved. The top ends of the ink returning blade and the scraper seat are also provided with fixing lugs 34 for connecting the lifting cylinder module 1.

It is to be understood that the structure of the scraper mechanism is shown in a more obvious way, and the angles shown in the schematic diagram only show the shape for the convenience of viewing, and the angle of the diagram cannot be taken as a limitation of the technical features of the present application.

While the invention has been described in detail and with reference to the illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention.

Claims

1. A printing scraper mechanism comprises a scraper and an ink return knife, wherein the scraper and the ink return knife are respectively arranged on a printing machine through a lifting cylinder module; the scraper comprises a scraper seat and a scraper strip, the scraper seat is divided into a scraper strip fixing surface and a moving path fixing surface, the left end and the right end of the scraper seat are different in thickness, an included angle is formed between the scraper strip fixing surface and the plane where the moving path fixing surface is located, and the scraper strip is arranged on the scraper strip fixing surface; the ink return surface is opposite to the scraping strip fixing surface.

2. The printing doctor mechanism according to claim 1, characterised in that the angle formed by the ink return surface and the plane of the ink return path surface is 1 to 3 degrees, and the angle formed by the doctor bar fixing surface and the plane of the path fixing surface is 1 to 3 degrees.

3. The printing doctor mechanism according to claim 1, wherein the two ends of the ink return blade body are extended and connected with bent material wings, and the bent material wings form an included angle θ with the two end side edges of the ink return blade body, and θ is 75 °.

4. The printing blade mechanism of claim 1, wherein the ink return blade body and blade holder tip are further provided with securing ears.