CN217347123U

CN217347123U - Printing scraper and solar cell screen printing device

Info

Publication number: CN217347123U
Application number: CN202221109789.0U
Authority: CN
Inventors: 吴昊; 李汉诚; 冯志强
Original assignee: Trina Solar Changzhou Technology Co ltd; Trina Solar Co Ltd
Current assignee: Trina Solar Changzhou Technology Co ltd; Trina Solar Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-09-02
Anticipated expiration: 2032-05-10

Abstract

The utility model discloses a printing scraper and solar cell screen printing device belongs to solar cell and makes technical field. The printing scraper comprises a cutter handle, a scraping head, a plurality of scraping strips and a plurality of scraper bodies, wherein the scraping head is connected to the cutter handle, the plurality of scraping strips are arranged along a first direction, the plurality of scraping strips are fixedly connected to the scraping head, and the plurality of scraper bodies are arranged in a one-to-one correspondence with the plurality of scraping strips. The solar cell screen printing device comprises the printing scraper. The utility model discloses a printing scraper and solar cell screen printing device sets up a plurality of strips of scraping, reduces the length of single strip of scraping, and the strip of scraping that length is shorter can guarantee the planarization of scraping the strip when long-term the use, avoids the inhomogeneous phenomenon of tension to appear in the silk screen version to improve printing homogeneity and printing effect.

Description

Printing scraper and solar cell screen printing device

Technical Field

The utility model relates to a solar cell makes technical field, especially relates to a printing scraper and solar cell screen printing device.

Background

When the crystalline silicon battery is used for screen printing, slurry is poured into one end of the screen printing plate, the scraping strip exerts certain pressure on the slurry part of the screen printing plate and moves towards the other end of the screen printing plate, and the slurry is extruded onto a printing stock from meshes of the pattern part by the scraping strip in the moving process. In the printing process, the scraping strip is in linear contact with the screen printing plate and the printing stock all the time, the contact line moves along with the movement of the scraping strip, and other parts of the screen printing plate are separated from the printing stock, so that the printing size precision is ensured and the printing stock is prevented from being smeared. When the scraping strip is lifted after scraping the whole printing area, the screen printing plate is also separated from the printing stock, the sizing agent is slightly scraped back to the initial position through the ink returning knife, and the workbench returns to the loading position, so that a complete printing stroke is realized.

As shown in fig. 1, the printing doctor includes a handle, a doctor head 1 ' connected to the handle, a doctor bar 2 ' connected to the doctor head 1 ', and a doctor body 3 ' connected to the doctor bar 2 '. In the prior art, a single scraping bar 2 'structure is adopted, when a large-size battery piece is printed, the length of the scraping bar 2' needs to be prolonged for adapting to the large-size battery piece, however, the length of the scraping bar 2 'is too long, and the smoothness of the scraping bar 2' can be damaged in long-term use, so that the tension of a silk-screen printing plate is not uniform, the phenomenon that the shapes of thin grids of the battery piece are inconsistent is caused, and meanwhile, the printing effect of the joint of a main grid and the thin grids can be influenced.

Therefore, a squeegee and a screen printing apparatus for a solar cell are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a printing scraper and solar cell screen printing device sets up a plurality of strips of scraping, reduces the length of single strip of scraping, and the strip of scraping that length is shorter can guarantee the planarization of scraping the strip when long-term the use, avoids the inhomogeneous phenomenon of tension to appear in the silk screen printing screen to improve printing homogeneity and printing effect.

To achieve the purpose, the utility model adopts the following technical proposal:

on the one hand, the printing scraper comprises a cutter handle, a scraping head, a plurality of scraping strips and a plurality of scraper bodies, wherein the scraping head is connected with the cutter handle in a plurality of scraping strips arranged along a first direction, and the scraping strips are fixedly connected with the scraping head in a plurality of scraping strip one-to-one correspondence.

In some possible embodiments, the scraping head is provided with a caulking groove, and the scraping strip is embedded in the caulking groove.

In some possible embodiments, the wiper strip abuts against a groove bottom of the caulking groove.

In some possible embodiments, there is one of the scraper heads, and all of the scraper bars are connected to the same scraper head.

In some possible embodiments, the scraping head is provided with a first groove, a boss is arranged in the first groove, and the boss divides the first groove into a plurality of caulking grooves.

In some possible embodiments, the scraping head is provided in plurality, the plurality of scraping heads are arranged along the first direction, and the scraping strip is connected to each scraping head.

In some possible embodiments, the number of wiper strips connected to each wiper head is the same.

In some possible embodiments, the tool shank is provided with a second groove, the scraping head is embedded in the second groove, and the scraping head abuts against a groove bottom of the second groove.

In some possible embodiments, the lengths of the plurality of wiper strips are all the same.

In another aspect, a solar cell screen printing device is provided, which comprises the printing scraper.

The utility model has the advantages that:

the utility model provides a pair of printing scraper and solar cell screen printing device is equipped with a plurality of strips of scraping through the length direction along the printing scraper, guarantees that a plurality of length sums of scraping the formation can satisfy the printing requirement. Through setting up a plurality of strips of scraping, when guaranteeing that total length satisfies the printing requirement, reduced the length of single strip of scraping, the strip of scraping that makes length shorter can not warp under long-term in service behavior, has guaranteed the planarization of scraping the strip, can not lead to the uneven phenomenon of tension to appear in the printing half tone to printing homogeneity and printing effect have been improved. The number of the scraping strips can be matched according to actual conditions such as the size of the battery piece, and the applicability of the printing scraper to different battery pieces is improved.

Drawings

FIG. 1 is a cross-sectional view of a prior art printing blade;

fig. 2 is a cross-sectional view of a printing blade according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a printing blade according to a second embodiment of the present invention.

In the figure:

1', a scraping head; 2', scraping strips; 3', a scraper body;

1. scraping the head; 11. a boss; 12. a limiting bulge; 2. scraping the strips; 3. the scraper body.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

The embodiment provides a solar cell screen printing apparatus which includes a printing blade. The embodiment also provides a printing scraper, as shown in fig. 2, it includes the handle of a knife (not shown in the figure), scrapes head 1, a plurality of strip 2 and a plurality of scraper body 3 of scraping, scrapes head 1 and connects in the handle of a knife, and a plurality of strip 2 of scraping set up along first direction, and a plurality of strip 2 fixed connection of scraping set up in scraping head 1, a plurality of scraper body 3 and a plurality of strip 2 one-to-one settings of scraping. Wherein, the length direction of first direction printing scraper promptly is equipped with a plurality of scraping strip 2 along length direction, guarantees that the length sum that a plurality of scraping strip 2 formed can satisfy the printing requirement. Through setting up a plurality of strips of scraping 2, when guaranteeing that a plurality of strips of scraping 2 sum length satisfy the printing requirement, reduced single length of scraping 2, make the shorter strip of scraping 2 of length can not warp under the long-term service behavior, guaranteed the planarization of scraping 2, can not lead to the uneven phenomenon of tension to appear in the printing half tone to printing homogeneity and printing effect have been improved. In particular, the number of the scraping strips 2 can be matched according to actual conditions such as the size of the battery piece, and the applicability of the printing scraper to different battery pieces is improved. The scheme can be used for printing two pieces of the 210mm large-size battery piece.

In this embodiment, as shown in fig. 2, the scraping head 1 is provided with one scraping strip 2, and all the scraping strips 2 are connected to the same scraping head 1, so that the plurality of scraping strips 2 are connected to the knife handle through one scraping head 1.

Optionally, the scraping head 1 is provided with a caulking groove, and the scraping strip 2 is embedded in the caulking groove, so that the scraping head 1 and the scraping strip 2 are connected. Specifically, the scraping strip 2 is made of rubber materials, and the scraping strip 2 and the scraper body 3 are of an integrally formed structure.

Further optionally, the scraping strip 2 abuts against the bottom of the caulking groove, so that on one hand, the depth of the scraping strip 2 extending into the caulking groove is increased, the contact area between the scraping strip 2 and the caulking groove is further increased, and the connection reliability is improved; on the other hand, all scrape the equal butt of strip 2 in the tank bottom of caulking groove, guarantee that the mounted position of scraping strip 2 is unanimous, provide the installation accuracy, and then guaranteed that all scrape strip 2 and deviate from tank bottom one side and keep the parallel and level, improved the printing effect.

Optionally, as shown in fig. 2, the scraping head 1 is provided with a first groove, a boss 11 is arranged in the first groove, the boss 11 divides the first groove into a plurality of caulking grooves, and when the scraping head 1 is embedded in the caulking grooves, on one hand, the boss 11 can be in contact with the scraping strip 2, so that the contact area between the scraping strip 2 and the caulking grooves can be increased, and the connection reliability is further improved; on the other hand, can make a plurality of scraping strip 2 separate mutually, every scraping strip 2 is installed in corresponding caulking groove, avoids the structure to take place to interfere, and easy to assemble, and improved the installation accuracy, and reduced the demand to scraping strip 2 machining precision, and then reduced manufacturing cost. In this embodiment, a boss 11 is provided to divide the first groove into two caulking grooves, and the two scraping strips 2 are respectively embedded in the two caulking grooves.

Specifically, as shown in fig. 2, the lengths of the plurality of wiper strips 2 are the same, the structure is uniform, and the structural flatness of the wiper strips 2 can be further maintained; the scraping strips 2 have the same structure, and can be produced in batch, so that the production cost is reduced.

In the embodiment, the knife handle is provided with a second groove, the scraping head 1 is embedded in the second groove, and the scraping head 1 abuts against the bottom of the second groove, so that the scraping head 1 and the knife handle are integrally formed, and the structural connection reliability is high; in other embodiments, the handle of a knife also can with scrape first 1 and be connected through the fastener, make things convenient for the dismouting, perhaps also can be equipped with clamping structure on the handle of a knife, clamping structure carries out the centre gripping to scraping first 1, and prior art can be referred to specific centre gripping mode, no longer gives details.

Example two

The embodiment provides a solar cell screen printing device and a printing scraper, wherein the solar cell screen printing device comprises the printing scraper, the structure of the printing scraper is basically the same as that of the first embodiment, and only the difference is described in the embodiment.

In this embodiment, as shown in fig. 3, the printing scraper includes a plurality of heads of scraping 1, and a plurality of heads of scraping 1 set up along the first direction, and every is scraped and is connected with on the head 1 and scrapes strip 2, scrapes the quantity of head 1 through the increase, reduces the size of scraping head 1, can avoid the structure too big and take place to warp, and this embodiment can improve 2 installation accuracy of scraping, and then guarantees the planarization of scraping strip 2, in addition, reduces and scrapes head 1 size, and convenient processing has reduced the processing cost.

In the embodiment, the number of the scraping strips 2 connected to each scraping head 1 is the same, the structures of the scraping heads 1 are the same, the installation uniformity of the scraping strips 2 can be ensured, and the flatness of all the scraping strips 2 is further ensured; in addition, the scraping heads 1 have the same structure, can be produced in batches, and reduces the production cost. In this embodiment, the wiper head 1 is connected to a wiper strip 2.

Furthermore, the scraping head 1 is provided with a limiting protrusion 12, when the scraping head 1 is connected with the knife handle, the limiting protrusion 12 is matched with the knife handle, the installation accuracy of the scraping head 1 can be guaranteed, and the installation accuracy of the scraping strip 2 is further guaranteed. In other embodiments, scrape and also can set up spacing recess isotructure on the head 1, spacing recess cooperatees with the handle of a knife, guarantees to scrape the installation accuracy of head 1 on the handle of a knife, specifically does not prescribe a limit to.

Optionally, a plurality of scraping heads 1 are arranged at intervals, so that structural interference is avoided, the requirement on the machining precision of the scraping heads 1 is reduced, and the production cost is reduced.

EXAMPLE III

The embodiment provides a solar cell screen printing device and a printing scraper, wherein the solar cell screen printing device comprises the printing scraper, the structure of the printing scraper is basically the same as that of the first embodiment and the second embodiment, and only the difference is described in the embodiment.

In this embodiment, the printing scraper includes a plurality of heads of scraping 1, and a plurality of heads of scraping 1 sets up along first direction, and every is scraped and is connected with two at least strips of scraping 2 on the head 1, specifically can set up according to actual conditions, no longer explains.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a printing scraper, its characterized in that includes the handle of a knife, scrapes the head, a plurality of strip and a plurality of scraper body of scraping, scrape the head connect in the handle of a knife, it is a plurality of scrape the strip and set up along first direction, and a plurality of scrape strip fixed connection in scrape the head, it is a plurality of the scraper body is with a plurality of scrape the strip one-to-one setting.

2. The printing scraper of claim 1 wherein the scraper head defines a recessed groove, and the scraper bar is embedded in the recessed groove.

3. The printing blade according to claim 2, wherein the scraper bar abuts against a groove bottom of the caulking groove.

4. Printing doctor according to claim 2, characterised in that one of said doctor heads is provided, all of said doctor bars being connected to the same doctor head.

5. The printing scraper according to claim 4, wherein the scraper head defines a first groove, and a boss is disposed in the first groove, and divides the first groove into a plurality of caulking grooves.

6. The printing blade according to claim 1, wherein the scraping head is provided in plurality, the plurality of scraping heads being arranged in the first direction, the scraping strip being attached to each of the scraping heads.

7. Printing doctor according to claim 6, characterised in that the number of doctor bars connected to each doctor head is the same.

8. The printing doctor according to any one of claims 1 to 7, characterised in that the shank is provided with a second groove, the doctor head being embedded in the second groove, the doctor head abutting against a groove bottom of the second groove.

9. Printing doctor according to any one of claims 1-7, characterised in that the lengths of the doctor bars are all the same.

10. A solar cell screen printing apparatus, characterized by comprising a printing doctor blade according to any of claims 1 to 9.