Solar cell printing silk screen

Abstract

The utility model provides a solar cell printing silk screen which comprises a silk screen body and a screen frame arranged on the periphery of the silk screen body in a sleeving mode. Wherein discharging holes are formed in the two sides of the screen frame, and the end, facing the inner side of the screen frame, of each discharging hole is located above the silk screen body and is obliquely arranged upwards in the direction facing the interior of the screen frame so as to be used for discharging slurry on the inner side of the screen frame and located on the silk screen body. Moreover, baffles are detachably connected to the two sides of the screen frame, and each baffle is located below the end, facing the outer side of the screen frame, of the corresponding discharging hole in the same side so as to receive slurry output from the discharging holes; that is to say, after being discharged through the discharge hole, the slurry falls into the baffle through the outer wall of the screen frame; during cleaning, the baffle is detached, and the baffle, the outer wall of the screen frame and the inner wall of the discharging hole are cleaned. According to the solar cell printing screen, slurry can be prevented from crossing the upper edge of the screen frame, redundant slurry can be recycled in time, and the recycling efficiency of the slurry is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of printing screens, and in particular relates to a solar cell printing screen. Background Art

[0002] Solar cells can convert light energy into electrical energy under the irradiation of sunlight, and are a new energy component with clean and environmentally friendly characteristics. In the existing solar cell production process, a printing screen is required to extrude the slurry into a predetermined shape onto the substrate to complete the formation of the electrode.

[0003] A common printing screen includes a screen body and a screen frame fixedly mounted on the periphery of the screen body; the screen frame not only fixes and tensions the screen body, but also limits the outflow of slurry.

[0004] The inventors found that when there is a lot of slurry on the surface of the printing screen and has not yet been scraped by the scraper, the slurry will pass over the upper edge of the screen frame and enter the upper side of the screen frame, or even flow out from the upper side of the screen frame to the outside, resulting in excess slurry damaging the on-site environment and being difficult to recycle. Utility Model Content

[0005] The embodiment of the present application provides a solar cell printing screen, which aims to prevent the slurry from going over the upper edge of the screen frame and ensure the recovery efficiency of the slurry.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] Provided is a solar cell printing screen, comprising a screen body, and a screen frame fixedly sleeved on the periphery of the screen body; the screen frame is provided with discharge holes on both sides facing its width direction; one end of each discharge hole facing the inner side of the screen frame is located above the screen body, and the discharge holes are arranged to be inclined upward in the direction toward the inside of the screen frame;

[0008] In addition, a baffle is detachably connected to both outer walls of the screen frame in its width direction; the baffle is located below one end of the discharge hole facing the outer side of the screen frame to receive the slurry output from the discharge hole.

[0009] In a possible implementation, the network frame includes:

[0010] The main body adopts a frame structure with a hollow interior and a vertically penetrating structure, and the lower side thereof has an annular groove connected with the interior thereof and suitable for the screen body to be placed therein; and the two discharge holes are respectively provided on both sides of the main body in the width direction thereof; and

[0011] The bottom plate adopts a frame structure that is hollow inside and penetrates from top to bottom, and is detachably connected to the lower side of the main body;

[0012] Wherein, the upper side surface of the base plate has a gasket suitable for embedding into the annular groove and abutting the lower side surface of the wire mesh body; when the wire mesh body is placed in the annular groove and the main body and the base plate are connected, the base plate abuts the wire mesh body through the gasket, and the gasket is in an elastically contracted state.

[0013] In a possible implementation, the main body has a positioning hole extending vertically; the upper side of the bottom plate has an alignment screw extending upward, and a docking nut is threadedly connected to the alignment screw;

[0014] Wherein, when the main body and the bottom plate are connected, the alignment screw is suitable for passing through the positioning hole and extending out, and the docking nut abuts against the upper side surface of the main body.

[0015] In a possible implementation, a plurality of connecting rods are detachably connected to the two outer walls of the screen frame facing its width direction; wherein the plurality of connecting rods are arranged at intervals along the length direction of the screen frame, and the axial direction of each connecting rod is parallel to the width direction of the screen frame;

[0016] Furthermore, each of the baffles is provided with a plurality of through holes corresponding to the plurality of connecting rods on the same side; each of the connecting rods is suitable for passing through the corresponding through hole and extending out to support the baffle and limit the movement of the baffle along the length direction of the screen frame.

[0017] In a possible implementation, the extending end of the connecting rod has a convex sphere; the convex sphere is made of elastic material and has a spherical structure;

[0018] When the convex sphere is in the through hole, the convex sphere undergoes elastic deformation;

[0019] When the connecting rod passes through the through hole and extends out, the convex sphere abuts against the side of the baffle plate facing away from the screen frame, and the baffle plate abuts against the outer side surface of the screen frame.

[0020] In a possible implementation, a slider is slidably connected in each of the discharge holes; a linkage member is provided between the two sliders, and the linkage member has a reserved hole that penetrates in the up-down direction for the scraper to pass through.

[0021] In a possible implementation, a pressing plate is provided in the reserved hole; the pressing plate is slidably connected to the linkage member along the length direction of the screen frame, and the pressing plate is also connected to an elastic reset member;

[0022] When the scraper passes through the reserved hole, the pressing plate abuts against one side of the scraper facing the length direction of the screen frame, and the elastic reset member is in an elastically deformed state.

[0023] In a possible implementation, the pressing plate has a plurality of guide rods extending along the length direction of the screen frame, and each of the guide rods penetrates the linkage member and extends out; the elastic reset member is a plurality of springs sleeved on the plurality of guide rods;

[0024] When the pressure plate abuts against the scraper, each of the springs is in an elastically compressed state.

[0025] In a possible implementation, the pressing plate further includes:

[0026] A connecting plate, which is arranged outside the linkage member and connected to the plurality of guide rods;

[0027] In addition, the net frame is provided with an avoidance hole which is communicated with the interior thereof and is used for the connecting plate to pass through.

[0028] In a possible implementation, both sides of the screen frame in its width direction are provided with a protective film; the protective film is located on the upper side of the baffle, and the protective film is arranged away from the discharge hole.

[0029] In the embodiment of the present application, the slurry on the upper side of the screen body can be restricted by the cooperation between the screen frame and the screen body; on this basis, when the slurry is large and has not yet been scraped by the scraper, the excess slurry will be discharged to the outside of the screen frame through the discharge hole to avoid the slurry flowing to the upper side of the screen frame and bringing adverse effects to the recovery of the slurry; at the same time, the baffle can also receive the discharged slurry to facilitate the rapid recovery of the slurry.

[0030] Compared with the prior art, the solar cell printing screen provided in this embodiment can prevent the slurry from going over the upper edge of the screen frame, realize timely recovery of excess slurry, and ensure the recovery efficiency of the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A schematic diagram of the three-dimensional structure of a solar cell printing screen provided in an embodiment of the present application;

[0033] Figure 2This is a schematic diagram of the exploded structure of the screen frame used in the embodiment of the present application;

[0034] Figure 3 for Figure 2 A partial enlarged schematic diagram of the upper circle A;

[0035] Figure 4 A schematic diagram of the three-dimensional structure of the main body used in the embodiment of the present application;

[0036] Figure 5 A partially enlarged schematic diagram of the main body used in the embodiment of the present application in a cross-sectional perspective;

[0037] Figure 6 A partial schematic diagram of a baffle used in an embodiment of the present application;

[0038] Figure 7 A schematic diagram of the combined structure of the linkage member and the pressure plate used in the embodiment of the present application;

[0039] Figure 8 for Figure 7 A partial enlarged schematic diagram of the upper circle B;

[0040] Fig. 9 A schematic cross-sectional view of the linkage member and the pressure plate used in the embodiment of the present application;

[0041] Explanation of the reference numerals: 1. Wire mesh body; 2. Wire mesh frame; 21. Main body; 211. Discharge hole; 212. Annular groove; 213. Positioning hole; 214. Avoidance hole; 22. Bottom plate; 221. Gasket; 222. Alignment screw; 223. Butt nut; 3. Baffle; 31. Through hole; 4. Connecting rod; 41. Convex sphere; 5. Slider; 6. Linkage member; 61. Reserved hole; 7. Press plate; 71. Guide rod; 72. Connecting plate; 8. Elastic reset member; 9. Protective film. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0044] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] Please also read Figures 1 to 9 The solar cell printing screen provided in the present application is now described. The solar cell printing screen provided in the present application comprises a screen body 1 and a screen frame 2.

[0047] The screen body 1 is a conventional screen structure; the screen frame 2 is fixedly sleeved on the outer periphery of the screen body 1 , and the upper and lower side surfaces of the screen frame 2 are respectively located above and below the screen body 1 .

[0048] The screen frame 2 is provided with discharge holes 211 on both sides thereof in the width direction; one end of each discharge hole 211 facing the inner side of the screen frame 2 (i.e., the inlet end of the discharge hole 211) is located above the screen body 1, and the discharge holes 211 are inclined upward in the direction toward the inside of the screen frame 2; when the slurry enters the discharge hole 211, it will flow out along the inclined surface due to its own gravity.

[0049] A baffle 3 is detachably connected to the two outer walls of the screen frame 2 in its width direction; the baffle 3 is located below the end of the discharge hole 211 facing the outside of the screen frame 2 (i.e. the outlet end of the discharge hole 211) to receive the slurry output from the discharge hole 211.

[0050] In the embodiment of the present application, the slurry on the upper side of the screen body 1 can be restricted by the cooperation between the screen frame 2 and the screen body 1; on this basis, when the slurry is large and has not yet been scraped by the scraper, the excess slurry will be discharged to the outside of the screen frame 2 through the discharge hole 211 to avoid the slurry flowing to the upper side of the screen frame 2 and bringing adverse effects to the recovery of the slurry; at the same time, the baffle 3 can also receive the discharged slurry to facilitate the rapid recovery of the slurry.

[0051] Compared with the prior art, the solar cell printing screen provided in this embodiment can prevent the slurry from going over the upper edge of the screen frame 2, thereby realizing timely recovery of excess slurry and ensuring the recovery efficiency of the slurry.

[0052] In some embodiments, Figures 1 to 4 As shown, the screen frame 2 includes a main body 21 and a bottom plate 22 .

[0053] The main body 21 is a hollow frame structure that penetrates from top to bottom. Its lower side has an annular groove 212 that is connected to the inside and suitable for the screen body 1 to be placed therein. In addition, two discharge holes 211 are respectively opened on both sides of the main body 21 in its width direction.

[0054] The bottom plate 22 adopts a frame structure that is hollow inside and penetrates from top to bottom (matching the main body 21 ), and is detachably connected to the lower side of the main body 21 .

[0055] The upper side of the bottom plate 22 has a gasket 221 which is suitable for being embedded in the annular groove 212 and abutting against the lower side of the screen body 1 .

[0056] By adopting the above technical solution, when the screen body 1 is placed in the annular groove 212 and the main body 21 and the bottom plate 22 are connected, the bottom plate 22 abuts against the screen body 1 through the gasket 221, and the gasket 221 is in an elastically contracted state.

[0057] In some embodiments, Figure 3 As shown, the main body 21 has a positioning hole 213 extending in the up-down direction; the upper side of the bottom plate 22 has an alignment screw 222 extending upward, and a docking nut 223 is threadedly connected to the alignment screw 222 .

[0058] By adopting the above technical solution, when the main body 21 and the bottom plate 22 are connected, the alignment screw 222 is suitable for passing through the positioning hole 213 and extending out, and the docking nut 223 abuts against the upper side surface of the main body 21.

[0059] In some embodiments, Figures 7 to 9 As shown, a plurality of connecting rods 4 are detachably connected to the two outer walls of the screen frame 2 in the width direction thereof; wherein the plurality of connecting rods 4 are arranged at intervals along the length direction of the screen frame 2 , and the axial direction of each connecting rod 4 is parallel to the width direction of the screen frame 2 .

[0060] In addition, each baffle plate 3 is provided with a plurality of through holes 31 corresponding to the plurality of connecting rods 4 on the same side; each connecting rod 4 is suitable for passing through the corresponding through hole 31 and extending out to support the baffle plate 3 and limit the movement of the baffle plate 3 along the length direction of the screen frame 2.

[0061] In some embodiments, Figure 1 , Figure 3 and Figure 6As shown, the extended end of the connecting rod 4 has a convex sphere 41; the convex sphere 41 is made of elastic material and has a spherical structure.

[0062] When the convex sphere 41 is in the through hole 31, the convex sphere 41 undergoes elastic deformation;

[0063] When the connecting rod 4 passes through the through hole 31 and extends out, the convex sphere 41 abuts against the side of the baffle 3 facing away from the screen frame 2 , and the baffle 3 abuts against the outer side of the screen frame 2 to limit the movement of the baffle 3 along the width direction of the screen frame 2 .

[0064] In some embodiments, Figure 5 and Figure 8 As shown, each discharge hole 211 is slidably connected with a slider 5; a linkage member 6 is provided between the two sliders 5, and the linkage member 6 has a reserved hole 61 that penetrates in the up-down direction for the scraper to pass through.

[0065] By adopting the above technical solution, on the one hand, the slider 5 can push and squeeze out the slurry in the discharge hole 211, reducing the difficulty of recovering the slurry in the discharge hole 211; on the other hand, the linkage 6 can effectively guide the scraper to ensure the product effect of screen printing.

[0066] In some embodiments, Figures 7 to 9 As shown, a pressing plate 7 is provided in the reserved hole 61; the pressing plate 7 is slidably connected with the linkage member 6 along the length direction of the screen frame 2, and the pressing plate 7 is also connected with an elastic reset member 8;

[0067] When the scraper passes through the reserved hole 61 , the pressing plate 7 abuts against the side of the scraper facing the length direction of the screen frame 2 , and the elastic reset member 8 is in an elastically deformed state, thereby improving the structural stability between the pressing plate 7 and the scraper.

[0068] In some embodiments, Figures 7 to 9 As shown, the pressure plate 7 has multiple guide rods 71 ​​extending along the length direction of the screen frame 2, and each guide rod 71 passes through the linkage member 6 and extends out; the elastic reset member 8 is a plurality of springs sleeved on the multiple guide rods 71; wherein the guide rods 71 ​​realize the sliding connection relationship between the linkage member 6 and the screen frame 2 in the length direction of the screen frame 2.

[0069] By adopting the above technical solution, when the pressure plate 7 abuts against the scraper, each spring is in an elastically compressed state.

[0070] In some embodiments, Figures 7 to 9 As shown, the pressure plate 7 further includes a connecting plate 72 ; the connecting plate 72 is disposed on the outside of the linkage member 6 , and is connected to the plurality of guide rods 71 ​​to synchronize the movement of the plurality of guide rods 71 ​​.

[0071] In addition, the screen frame 2 is provided with an escape hole 214 which is connected to the interior thereof and is used for the connecting plate 72 to pass through. Due to the existence of the escape hole 214 , it is ensured that the end surface of the linkage member 6 can abut against the inner wall of the screen frame 2 .

[0072] In some embodiments, Figure 1 As shown, both sides of the screen frame 2 in its width direction have a protective film 9 ; the protective film 9 is located on the upper side of the baffle 3 , and the protective film 9 is arranged to avoid the discharge hole 211 .

[0073] By regularly replacing the protective film 9, the outer wall of the screen frame 2 can be kept clean and the difficulty of cleaning the high-viscosity slurry can be reduced.

[0074] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A solar cell printing screen, comprising a screen body and a screen frame fixedly sleeved on the periphery of the screen body; characterized in that: The mesh frame is provided with discharge holes on both sides in the width direction thereof; one end of each discharge hole facing the inner side of the mesh frame is located above the wire mesh body, and the discharge holes are arranged to be inclined upward in the direction toward the inside of the mesh frame; Furthermore, a baffle is detachably connected to the two outer walls of the screen frame facing its width direction; The baffle is located below one end of the discharge hole facing the outer side of the screen frame, so as to receive the slurry output from the discharge hole.

2. The solar cell printing screen according to claim 1, characterized in that: The network frame comprises: The main body adopts a frame structure with a hollow interior and a vertically penetrating structure, and the lower side thereof has an annular groove connected with the interior thereof and suitable for the screen body to be placed therein; and the two discharge holes are respectively provided on both sides of the main body in the width direction thereof; and The bottom plate adopts a frame structure that is hollow inside and penetrates from top to bottom, and is detachably connected to the lower side of the main body; Wherein, the upper side surface of the base plate has a gasket suitable for embedding into the annular groove and abutting the lower side surface of the wire mesh body; when the wire mesh body is placed in the annular groove and the main body and the base plate are connected, the base plate abuts the wire mesh body through the gasket, and the gasket is in an elastically contracted state.

3. The solar cell printing screen according to claim 2, characterized in that: The main body is provided with a positioning hole extending vertically; the upper side surface of the bottom plate is provided with an alignment screw extending upward, and a docking nut is threadedly connected to the alignment screw; Wherein, when the main body and the bottom plate are connected, the alignment screw is suitable for passing through the positioning hole and extending out, and the docking nut abuts against the upper side surface of the main body.

4. The solar cell printing screen according to any one of claims 1 to 3, characterized in that: A plurality of connecting rods are detachably connected to the two outer walls of the screen frame facing its width direction; wherein the plurality of connecting rods are arranged at intervals along the length direction of the screen frame, and the axial direction of each connecting rod is parallel to the width direction of the screen frame; Furthermore, each of the baffles is provided with a plurality of through holes corresponding to the plurality of connecting rods on the same side; each of the connecting rods is suitable for passing through the corresponding through hole and extending out to support the baffle and limit the movement of the baffle along the length direction of the screen frame.

5. The solar cell printing screen according to claim 4, characterized in that: The extended end of the connecting rod has a convex sphere; the convex sphere is made of elastic material and has a spherical structure; When the convex sphere is in the through hole, the convex sphere undergoes elastic deformation; When the connecting rod passes through the through hole and extends out, the convex sphere abuts against the side of the baffle plate facing away from the screen frame, and the baffle plate abuts against the outer side surface of the screen frame.

6. The solar cell printing screen according to claim 1, characterized in that: A sliding block is slidably connected in each of the discharge holes; a linkage piece is provided between the two sliding blocks, and the linkage piece is provided with a reserved hole which penetrates in the up-down direction and is used for the scraper to pass through.

7. The solar cell printing screen according to claim 6, characterized in that: A pressing plate is provided in the reserved hole; the pressing plate is slidably connected with the linkage member along the length direction of the screen frame, and the pressing plate is also connected with an elastic reset member; When the scraper passes through the reserved hole, the pressing plate abuts against one side of the scraper facing the length direction of the screen frame, and the elastic reset member is in an elastically deformed state.

8. The solar cell printing screen according to claim 7, characterized in that: The pressing plate is provided with a plurality of guide rods extending along the length direction of the screen frame, and each of the guide rods penetrates the linkage member and extends out; the elastic reset member is a plurality of springs sleeved on the plurality of guide rods; When the pressure plate abuts against the scraper, each of the springs is in an elastically compressed state.

9. The solar cell printing screen according to claim 8, characterized in that: The pressing plate also includes: A connecting plate, which is arranged outside the linkage member and connected to the plurality of guide rods; In addition, the net frame is provided with an avoidance hole which is communicated with the interior thereof and is used for the connecting plate to pass through.

10. The solar cell printing screen according to claim 1, characterized in that: The two sides of the screen frame facing its width direction are each provided with a protective film; the protective film is located on the upper side of the baffle plate, and the protective film is arranged to avoid the discharge hole.

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