Printing mechanism and printing equipment

Abstract

The utility model belongs to the technical field of battery piece printing, and particularly relates to a printing mechanism and printing equipment, and the printing mechanism comprises a pair of vertical moving pairs; the scraper assemblies are arranged in a mirror image mode and installed at the moving ends of the vertical moving pairs respectively, each scraper assembly comprises a support and a scraper body, the edges of the bottoms of the opposite side walls of the supports are provided with installation slopes, and the scraper bodies are installed on the installation slopes; in short, the scraper assemblies arranged in a mirror image mode are arranged on a pair of vertical moving pairs respectively, the scraper assemblies can be controlled to slide up and down, when conductive silver paste needs to be squeezed rightwards, the scraper assembly on the right side is lifted up, and otherwise, the scraper assembly on the left side is lifted up, so that the step of coating the conductive silver paste through a coating knife is omitted; and the conductive silver paste is prevented from permeating to the surface of the battery piece in advance to generate thick printing points and thick lines.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery cell printing, and particularly relates to a printing mechanism and a printing device. Background Art

[0002] In the process of manufacturing solar cells, it is usually necessary to use a screen plate to print conductive silver paste onto the battery cells. The existing printing mechanism usually includes a coating knife and a scraping knife. First, the coating knife evenly coats the conductive silver paste on the surface of the screen plate, and then the scraping knife moves in the reverse direction to extrude the conductive silver paste from the openings of the screen plate onto the surface of the battery cells.

[0003] However, before the scraping knife moves in the reverse direction, the conductive silver paste is already evenly distributed on the surface of the screen plate, and the conductive silver paste is likely to penetrate from the openings of the screen plate onto the surface of the battery cells. When the scraping knife moves in the reverse direction, it is easy to extrude too much conductive silver paste, resulting in the generation of printing thick dots or thick lines.

[0004] Therefore, how to avoid the generation of printing thick dots or thick lines is a technical problem that needs to be urgently solved in this field. Content of the Utility Model

[0005] The purpose of the utility model is to provide a printing mechanism and a printing device.

[0006] To solve the above technical problems, the utility model provides a printing mechanism, including: a pair of vertical moving pairs; scraping knife assemblies arranged in a mirror image, which are respectively installed on the moving ends of the vertical moving pairs. The scraping knife assemblies include brackets and knife bodies. The edges of the bottom of the opposite side walls of the brackets are provided with installation inclined surfaces, and the knife bodies are installed on the installation inclined surfaces.

[0007] Preferably, the included angle between the installation inclined surface and the horizontal plane is 50 - 76°.

[0008] Preferably, the bottom of the knife body is provided with a scraping edge.

[0009] Preferably, the cross-section of the knife body is rectangular.

[0010] Preferably, a pressing plate is arranged on the side wall of the knife body, and the pressing plate is connected to the installation inclined surface through bolts.

[0011] Preferably, a through hole is opened at the top of the bracket, an adjusting bearing is installed in the through hole, an adjusting pin is inserted into the adjusting bearing, and the adjusting pin is threadedly connected to the moving end of the vertical moving pair.

[0012] Preferably, an installation plate is arranged on the short-edge side wall of the bracket, a blocking plate extends from one end of the installation plate close to the knife body, the blocking plates are respectively inclined outwards, and the lowest point of the blocking plate is higher than the lowest point of the knife body.

[0013] Preferably, an adjustment block is provided at the top of the bracket. A kidney-shaped hole is formed in the adjustment block, and the kidney-shaped hole is connected to the bracket by bolts, and the side wall of the adjustment block always fits against the mounting plate.

[0014] Preferably, an extension block extends downward from one end of the adjustment block, and the side wall of the extension block always fits against the mounting plate.

[0015] The present utility model also provides a printing mechanism: including the above-mentioned printing mechanism, and the vertical moving pair is installed on the moving end of the horizontal moving pair.

[0016] The beneficial effects of the present utility model are:

[0017] The doctor blade assemblies arranged in a mirror image are respectively arranged on a pair of vertical moving pairs, and can control the up and down sliding of the doctor blade assemblies. When it is necessary to squeeze the conductive silver paste to the right, the doctor blade assembly on the right is lifted, and vice versa, the doctor blade assembly on the left is lifted. This eliminates the step of coating the conductive silver paste with a coating knife, and avoids the premature penetration of the conductive silver paste onto the surface of the battery cell, resulting in printing thick dots and thick lines.

[0018] Other features and advantages of the present utility model will be described in the following description of the specification, and in part, will be obvious from the description of the specification, or will be understood by implementing the present utility model.

[0019] To make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the attached drawings, makes a detailed description as follows. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a perspective view of a preferred embodiment of the printing device of the present utility model;

[0022] Figure 2 is a perspective view of a preferred embodiment of the doctor blade assembly of the present utility model;

[0023] Figure 3 is a perspective view of a preferred embodiment of the doctor blade assembly of the present utility model.

[0024] In the figure:

[0025] 1. Vertical moving pair;

[0026] 2. Scraper assembly;

[0027] 21. Bracket; 211. Installation inclined plane; 212. Through hole; 213. Adjusting bearing; 214. Adjusting pin; 215. Mounting plate; 216. Baffle plate; 217. Adjusting block; 218. Kidney-shaped hole; 219. Extension block;

[0028] 22. Knife body; 221. Scraping edge; 222. Pressure plate;

[0029] 3. Horizontal moving pair. Specific embodiments

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] As Figures 1 to 3 shown, at least one embodiment provides a printing mechanism, including: a pair of vertical moving pairs 1; mirror-image scraper assemblies 2 respectively installed on the moving ends of the vertical moving pairs 1, the scraper assemblies 2 including brackets 21 and knife bodies 22, the edges at the bottoms of the opposite side walls of the brackets 21 being provided with installation inclined planes 211, and the knife bodies 22 being installed on the installation inclined planes 211; in short, the mirror-image scraper assemblies 2 are respectively arranged on a pair of vertical moving pairs 1, capable of controlling the up-and-down sliding of the scraper assemblies 2. When it is necessary to squeeze the conductive silver paste to the right, the right scraper assembly 2 is lifted, and vice versa, the left scraper assembly is lifted, eliminating the step of coating the conductive silver paste with a coating knife and avoiding the premature penetration of the conductive silver paste onto the surface of the battery cell, resulting in printing dots and lines.

[0032] In some embodiments, the angle between the installation inclined plane 211 and the horizontal plane is 50 - 76°; in short, installing the knife body 22 on the installation inclined plane 211 can enable the knife body 22 to exert a downward component force on the conductive silver paste to squeeze the conductive silver paste. Preferably, the angle between the installation inclined plane 211 and the horizontal plane is 50 - 76°. An overly small angle will result in excessive resistance on the knife body 22, but an overly large angle will result in insufficient downward component force.

[0033] In some embodiments, a scraping edge 221 is provided at the bottom of the tool body 22; in short, if the contact surface of the tool body 22 with the stencil is a plane, it may cause the plane not to fit perfectly with the stencil, and it is impossible to fully extrude the conductive silver paste. The scraping edge 221 is conducive to fitting the stencil and providing sufficient extrusion force.

[0034] In some embodiments, the cross-section of the tool body 22 is rectangular; in short, if the tool body 22 is designed as a cuboid, it can ensure that the included angle between the surfaces adjacent to the scraping edge 221 is 90°, ensuring the strength of the scraping edge 221.

[0035] In some embodiments, a pressing plate 222 is provided on the side wall of the tool body 22, and the pressing plate 222 is connected to the installation inclined surface 211 by bolts; in short, the pressing plate 222 is connected to the installation inclined surface 211 by bolts, and by opening a perforation in the tool body 22, the tool body 22 can be installed on the installation inclined surface 211 together.

[0036] In some embodiments, a through hole 212 is provided at the top of the bracket 21, an adjusting bearing 213 is installed in the through hole 212, an adjusting pin 214 is inserted into the adjusting bearing 213, and the adjusting pin 214 is threadedly connected to the moving end of the vertical moving pair 1; in short, the setting of the adjusting bearing 213 enables the bracket 21 to be rotatably arranged on the adjusting pin 214, can adjust the angle of the scraping edge, ensure that the scraping edge 221 fits the stencil, and the adjusting pin 214 is threadedly connected to the vertical moving pair 1. When the angle of the scraping edge 221 is adjusted, the adjusting pin 214 is tightened to fix the bracket 21.

[0037] In some embodiments, a mounting plate 215 is provided on the short side wall of the bracket 21, a blocking plate 216 extends from one end of the mounting plate 215 close to the tool body 22, the blocking plates 216 are inclined outward respectively, and the lowest point of the blocking plate 216 is higher than the lowest point of the tool body 22; in short, the outwardly inclined blocking plates 216 can block the conductive silver paste on the stencil in front of the tool body 22, and the structure is simple and reliable.

[0038] In some embodiments, an adjusting block 217 is provided at the top of the bracket 21, a waist-shaped hole 218 is provided in the adjusting block 217, the waist-shaped hole 218 is connected to the bracket 21 by bolts, and the side wall of the adjusting block 217 always fits the mounting plate 215; in short, when the adjusting block 217 slides to both sides, the distance between the blocking plates 216 can be increased to accommodate more conductive silver paste.

[0039] In some embodiments, an extension block 219 extends downward from one end of the adjustment block 217, and the side wall of the extension block 219 always abuts against the mounting plate 215; in short, the mounting plate 215 can be better supported by the extension block 219.

[0040] At least one embodiment provides a printing mechanism: including the above-mentioned printing mechanism, the vertical moving pair 1 is installed on the moving end of the horizontal moving pair 3.

[0041] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A printing mechanism, characterized in that, Comprising: A pair of vertical moving pairs (1); Scraper assemblies (2) arranged in a mirror image, which are respectively installed on the moving ends of the vertical moving pairs (1). The scraper assemblies (2) include brackets (21) and cutter bodies (22). The edges at the bottoms of the opposite side walls of the brackets (21) are provided with installation inclined surfaces (211), and the cutter bodies (22) are installed on the installation inclined surfaces (211).

2. The printing mechanism according to claim 1, wherein The included angle between the installation inclined surface (211) and the horizontal plane is 50 - 76°.

3. The printing mechanism according to claim 1, wherein The bottom of the cutter body (22) is provided with a scraping edge (221).

4. The printing mechanism according to claim 1, wherein The cross-section of the cutter body (22) is rectangular.

5. The printing mechanism according to claim 1, wherein The side wall of the cutter body (22) is provided with a pressing plate (222), and the pressing plate (222) is connected to the installation inclined surface (211) by bolts.

6. The printing mechanism according to claim 1, wherein A through hole (212) is opened at the top of the bracket (21). An adjusting bearing (213) is installed in the through hole (212). An adjusting pin (214) is inserted into the adjusting bearing (213), and the adjusting pin (214) is threadedly connected to the moving end of the vertical moving pair (1).

7. The printing mechanism according to claim 1, wherein The short-edge side wall of the bracket (21) is provided with a mounting plate (215). A blocking plate (216) extends at one end of the mounting plate (215) close to the cutter body (22). The blocking plates (216) are respectively inclined outwards, and the lowest point of the blocking plates (216) is higher than the lowest point of the cutter body (22).

8. The printing mechanism according to claim 7, wherein An adjusting block (217) is provided at the top of the bracket (21). A waist-shaped hole (218) is opened in the adjusting block (217). The waist-shaped hole (218) is connected to the bracket (21) by bolts, and the side wall of the adjusting block (217) always fits against the mounting plate (215).

9. The printing mechanism according to claim 8, wherein An extension block (219) extends downward at one end of the adjusting block (217), and the side wall of the extension block (219) always fits against the mounting plate (215).

10. A printing device, including a horizontal moving pair (3), wherein It further includes the printing mechanism according to any one of claims 1 - 9, and the vertical moving pair (1) is installed on the moving end of the horizontal moving pair (3).

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