Photovoltaic screen printing scraper

Abstract

The utility model relates to the technical field of scrapers, and in particular to a photovoltaic screen printing scraper, comprising a mounting portion, a first scraper portion and a second scraper portion, wherein the mounting portion is used to connect a mobile device or a handheld device, the first scraper portion is arranged on the bottom surface of the mounting portion, the second scraper portion is arranged on the bottom surface of the mounting portion, and the first scraper portion and the second scraper portion are arranged at intervals, and the gap between the first scraper portion and the second scraper portion forms a storage area, the storage area is used to temporarily store slurry, the length of the first scraper portion is greater than the length of the second scraper portion, through the cooperation of the first scraper portion and the second scraper portion which are arranged at intervals with different lengths, a double-layer scraper design is adopted, and material can be scraped twice in one printing stroke, the second scraper portion is used for pre-printing processing, the first scraper portion is used to fully squeeze the slurry in the mesh to separate from the screen, and the secondary scraper continues to squeeze the slurry remaining on the screen into the mesh, playing a role in checking for leaks and filling gaps.

Description

Technical Field

[0001] The utility model relates to the technical field of scrapers, in particular to a photovoltaic screen printing scraper. Background Art

[0002] Screen printing is one of the core processes of photovoltaic cells, and the printing scraper, as the core component of screen printing, has an important influence on the printing effect (height and width of the grid line).

[0003] The printing scraper in the prior art is basically made of a rectangular adhesive strip bonded to a scraper handle, with a single shape. It makes linear contact with the screen at a certain angle to squeeze the slurry through the mesh holes and print it on the battery cell.

[0004] With the growing demand for cost reduction and efficiency improvement in the industry, printing speeds are gradually increasing and screen line widths are gradually narrowing. The traditional scraper and printing machine pressure parameter adjustment can no longer meet the printing quality requirements. There are often unstable grid line height and width - efficiency loss, virtual printing and broken grids - yield loss, and cost losses caused by waste of silver paste during abnormal processing. There is too little (insufficient) or too much (piling, extrusion and sticking) slurry in the screen. These are problems that need to be solved urgently. It is necessary to improve the design of traditional scrapers to improve the stability of screen printing and ensure printing quality. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to provide a photovoltaic screen printing scraper to overcome the problem that it is difficult to control the pre-coating amount of slurry when the scraper is scraping the slurry in the prior art.

[0006] The utility model solves the technical problem by adopting the following technical scheme: a photovoltaic screen printing scraper, comprising a mounting portion, a first scraper portion and a second scraper portion, the mounting portion is used to connect a mobile device or a handheld device, the first scraper portion is arranged on the bottom surface of the mounting portion, the second scraper portion is arranged on the bottom surface of the mounting portion, and the first scraper portion and the second scraper portion are arranged at intervals, and the gap between the first scraper portion and the second scraper portion forms a storage area, the storage area is used to temporarily store slurry, the length of the first scraper portion is greater than the length of the second scraper portion, through the cooperation of the first scraper portion and the second scraper portion arranged at intervals of different lengths, a double-layer scraper design is adopted, and the material can be scraped twice in one printing stroke, the second scraper portion is used for pre-printing processing, the first scraper portion is used to fully squeeze the slurry in the mesh to separate from the screen, and the secondary scraper continues to squeeze the slurry remaining on the screen into the mesh, which plays a role in checking for leaks and filling gaps;

[0007] The total amount of slurry in the storage area between the first scraper part and the second scraper part is fixed, which helps to control the amount of slurry during the slurrying process and further ensure the consistency of printing effect;

[0008] When in use, the wire mesh hard brush scraper is in an inclined state.

[0009] In order to solve the problem that the slurry is easily accumulated in front of the moving direction of the second scraper part, the second scraper part is further provided with a plurality of through holes, which are connected to the storage area and are used for the slurry to pass through.

[0010] In order to solve the problem that the printing scraper needs to be calibrated front and back and is inconvenient to use, the printing scraper further includes a third scraper portion, the third scraper portion is arranged on the bottom surface of the mounting portion, and the gap between the third scraper portion and the first scraper portion forms a material storage area, and the length of the third scraper portion is smaller than the length of the first scraper portion.

[0011] In order to solve the problem of uneven coating of the single-arranged first scraper portion and the second scraper portion, the printing scraper further includes a third scraper portion, the third scraper portion is arranged on the bottom surface of the mounting portion, and the gap between the third scraper portion and the first scraper portion is formed as a material storage area, the length of the third scraper portion is greater than the length of the first scraper portion, and the difference between the third scraper portion and the first scraper portion is equal to the difference between the first scraper portion and the second scraper portion.

[0012] In order to solve the problem that the slurry easily leaks from the side of the storage area, the printing scraper further includes two sealing plates, which are respectively arranged at the front and rear upper ends of the storage area, and the sealing plates connect the first scraper part, the second scraper part and the mounting part.

[0013] In order to solve the problem of the printing scraper, the sealing plate further comprises a bottom surface with an inclined docking surface, one side of the docking surface is connected to the inner side surface of the first scraper part, and the other side of the docking surface is connected to the bottom surface of the second scraper part.

[0014] In order to solve the problem of inconvenience in replacing the first scraper part and the second scraper part after being worn, the first scraper part and the second scraper part are further detachably arranged on the bottom surface of the mounting part.

[0015] The bottom surface of the mounting portion is further provided with an engaging groove for mounting the first scraper portion / the second scraper portion.

[0016] The utility model has the following beneficial effects: the utility model provides a photovoltaic screen printing scraper, which adopts a double-layer scraper design through the cooperation of the first scraper part and the second scraper part of different lengths and arranged at intervals, and can scrape twice in one printing stroke. The second scraper part is used for pre-printing treatment, the first scraper part is used to fully squeeze the slurry in the mesh to separate from the screen, and the secondary scraper continues to squeeze the slurry remaining on the screen into the mesh, which plays a role in checking for leaks and filling gaps.

[0017] The total amount of slurry in the storage area between the first scraper part and the second scraper part is fixed, which helps to control the amount of slurry during the slurrying process and further ensure the consistency of printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a front view structural schematic diagram of the utility model;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of embodiment 2 of the utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of embodiment 3 of the present utility model;

[0023] Figure 5 It is a cross-sectional structural schematic diagram of embodiment 4 of the present utility model;

[0024] Figure 6 It is a front view structural schematic diagram of embodiment 5 of the utility model;

[0025] Figure 7 It is a cross-sectional structural schematic diagram of embodiment 6 of the present utility model;

[0026] Figure 8 It is a structural schematic diagram of the utility model in use state.

[0027] In the figure: 1, mounting portion, 11, fitting groove, 2, first scraping portion, 3, second scraping portion, 31, through hole, 4, material storage area, 5, third scraping portion, 6, sealing plate, 61, docking surface. DETAILED DESCRIPTION

[0028] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0029] Embodiment 1:

[0030] like Figure 1 The utility model is a schematic diagram of the structure of a photovoltaic screen printing scraper, comprising a mounting portion 1, a first scraping portion 2 and a second scraping portion 3. The first scraping portion 2 / the second scraping portion 3 can be fixedly connected to the mounting portion 1 by welding, bonding, etc. The mounting portion 1 is used to connect a mobile device or a handheld device, such as Figure 1 , Figure 2 , Figure 8As shown, the first scraper portion 2 is arranged on the bottom surface of the mounting portion 1, the second scraper portion 3 is arranged on the bottom surface of the mounting portion 1, and the first scraper portion 2 and the second scraper portion 3 are arranged at intervals, and the gap between the first scraper portion 2 and the second scraper portion 3 forms a storage area 4, the storage area 4 is used to temporarily store slurry, the length of the first scraper portion 2 is greater than the length of the second scraper portion 3, through the cooperation of the first scraper portion 2 and the second scraper portion 3 of different lengths and arranged at intervals, a double-layer scraper design is adopted, and the material can be scraped twice in one printing stroke, the second scraper portion 3 is used for pre-printing treatment, the first scraper 2 is used to fully squeeze the slurry in the mesh to separate from the screen, and the secondary scraper continues to squeeze the slurry remaining on the screen into the mesh, which plays a role in checking for leaks and filling gaps;

[0031] The slurry is controlled to be constant, ensuring the consistency of height and width line type and stable printing effect;

[0032] In one printing stroke, the ink is scraped twice under the premise of ensuring the printing speed remains unchanged, effectively reducing the defects of false printing and broken grid;

[0033] The total amount of slurry in the storage area 4 between the first scraper part and the second scraper part is fixed, which helps to control the amount of slurry during the slurrying process and further ensure the consistency of printing effect.

[0034] When in use, the wire mesh hard brush scraper is in an inclined state.

[0035] The hardness of the second scraper portion 3 is lower than the hardness of the first scraper portion 2 .

[0036] Embodiment 2:

[0037] like Figure 3 As shown, the second scraper part 3 is provided with a plurality of through holes 31 , which are connected to the storage area 4 . The through holes 31 are used for allowing the slurry to pass through, so as to avoid the slurry from accumulating in front of the second scraper part 3 , and to make it easy for the slurry to enter the storage area 4 .

[0038] Embodiment 3:

[0039] like Figure 4 As shown, the printing scraper includes a third scraper portion 5, which is arranged on the bottom surface of the mounting portion 1, and the gap between the third scraper portion 5 and the first scraper portion 2 forms a material storage area 4. The length of the third scraper portion 5 is less than the length of the first scraper portion 2, so that the printing scraper of the present application can be used on both sides without calibration.

[0040] Furthermore, the lengths of the third scraper portion 5 and the second scraper portion 3 are different, and the printing scraper has different use effects.

[0041] Furthermore, the first scraper part 2 and the second scraper part 3 are both provided with holes for the slurry to pass through, and the hole on the first scraper part 2 is provided at the upper part thereof, so as to balance the amount of slurry in the storage area 4 .

[0042] Embodiment 4:

[0043] like Figure 5 As shown, the printing scraper includes a third scraper portion 5, which is arranged on the bottom surface of the mounting portion 1, and the gap between the third scraper portion 5 and the first scraper portion 2 forms a material storage area 4, the length of the third scraper portion 5 is greater than the length of the first scraper portion 2, and the difference between the third scraper portion 5 and the first scraper portion 2 is equal to the difference between the first scraper portion 2 and the second scraper portion 3. On the one hand, the slurry can be fully filled into the mesh holes of the screen, and on the other hand, excess slurry can be scraped off.

[0044] Furthermore, the present application may install a plurality of scraping parts with gradually increasing lengths, so that the coating of the slurry is more uniform.

[0045] Embodiment 5:

[0046] like Figure 6 As shown, the printing scraper includes two sealing plates 6, which are respectively arranged at the front and rear upper ends of the storage area 4, and the sealing plates 6 connect the first scraper part 2, the second scraper part 3 and the mounting part 1 to prevent the slurry from being lost from the side of the storage area 4.

[0047] The bottom surface of the sealing plate 6 has an inclined docking surface 61, one side of which is connected to the inner side of the first scraper part 2, and the other side of which is connected to the bottom surface of the second scraper part 3, which is convenient for installation or placement of the scraper during use.

[0048] Embodiment 6:

[0049] like Figure 7 As shown, the first scraper portion 2 and the second scraper portion 3 are detachably arranged on the bottom surface of the mounting portion 1 .

[0050] The bottom surface of the mounting portion 1 is provided with an engaging groove 11 for mounting the first scraper portion 2 / the second scraper portion 3 , and the engaging groove 11 and the scraper portion can be fitted by interference or snap-fit.

[0051] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A photovoltaic screen printing scraper, characterized in that: The invention comprises a mounting portion (1), a first scraper portion (2) and a second scraper portion (3), wherein the mounting portion (1) is used to connect a mobile device or a handheld device, the first scraper portion (2) is arranged on the bottom surface of the mounting portion (1), the second scraper portion (3) is arranged on the bottom surface of the mounting portion (1), and the first scraper portion (2) and the second scraper portion (3) are arranged at intervals, and the gap between the first scraper portion (2) and the second scraper portion (3) forms a material storage area (4), and the material storage area (4) is used to temporarily store slurry, and the length of the first scraper portion (2) is greater than the length of the second scraper portion (3); When in use, the wire mesh hard brush scraper is in an inclined state.

2. A photovoltaic screen printing squeegee as claimed in claim 1, characterized in that: The second scraper portion (3) is provided with a plurality of through holes (31), the through holes (31) being in communication with the material storage area (4), and the through holes (31) are used for allowing slurry to pass through.

3. A photovoltaic screen printing squeegee as claimed in claim 1, characterized in that: The printing scraper comprises a third scraper portion (5), the third scraper portion (5) is arranged on the bottom surface of the mounting portion (1), and a gap between the third scraper portion (5) and the first scraper portion (2) forms a material storage area (4), and the length of the third scraper portion (5) is less than the length of the first scraper portion (2).

4. A photovoltaic screen printing squeegee as claimed in claim 1, characterized in that: The printing scraper comprises a third scraper portion (5), the third scraper portion (5) is arranged on the bottom surface of the mounting portion (1), and a gap between the third scraper portion (5) and the first scraper portion (2) forms a material storage area (4), the length of the third scraper portion (5) is greater than the length of the first scraper portion (2), and the difference between the third scraper portion (5) and the first scraper portion (2) is equal to the difference between the first scraper portion (2) and the second scraper portion (3).

5. A photovoltaic screen printing squeegee as claimed in claim 1, characterized in that: The printing scraper comprises two sealing plates (6), which are respectively arranged at the front and rear upper ends of the material storage area (4), and the sealing plates (6) connect the first scraper part (2), the second scraper part (3) and the mounting part (1).

6. A photovoltaic screen printing squeegee as claimed in claim 5, characterized in that: The bottom surface of the sealing plate (6) has an inclined docking surface (61), one side of the docking surface (61) is connected to the inner side surface of the first scraper portion (2), and the other side of the docking surface (61) is connected to the bottom surface of the second scraper portion (3).

7. A photovoltaic screen printing squeegee as claimed in claim 1, characterized in that: The first scraper portion (2) and the second scraper portion (3) are detachably arranged on the bottom surface of the mounting portion (1).

8. A photovoltaic screen printing squeegee as claimed in claim 7, characterized in that: The bottom surface of the mounting portion (1) is provided with an engaging groove (11) for mounting the first scraper portion (2) / the second scraper portion (3).

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