Solar cell printing screen
Technical Field
The application belongs to the technical field of printing screens, and particularly relates to a solar cell printing screen.
Background
The solar cell can convert light energy into electric energy under the irradiation of sunlight, and belongs to a new energy element with the characteristics of cleanness and environmental protection.
The common printing silk screen comprises a silk screen body and a screen frame fixedly sleeved on the periphery of the silk screen body, wherein the screen frame not only has the functions of fixing and tensioning the silk screen body, but also has the function of limiting the outflow of slurry.
The inventor found that when the slurry on the surface of the printing screen is more and is not scraped by the scraper, the slurry can cross the upper edge of the screen frame and enter the upper side surface of the screen frame, even flow out from the upper side surface of the screen frame to the outside, so that the excessive slurry damages the field environment and is inconvenient to recycle.
Disclosure of utility model
The embodiment of the application provides a solar cell printing screen, which aims to prevent slurry from crossing the upper edge of a screen frame and ensure the recovery efficiency of the slurry.
In order to achieve the above purpose, the application adopts the following technical scheme:
The solar cell printing screen comprises a screen body and a screen frame fixedly sleeved on the periphery of the screen body, wherein discharge holes are formed in two sides of the screen frame facing the width direction of the screen frame, one end of each discharge hole facing the inner side of the screen frame is positioned above the screen body, and the discharge holes are obliquely arranged upwards in the direction facing the inner side of the screen frame;
and a baffle is detachably connected to two outer walls of the screen frame facing the width direction of the screen frame, and the baffle is positioned below one end of the discharge hole facing the outer side of the screen frame and is used for receiving slurry output from the discharge hole.
In one possible implementation, the frame includes:
a main body with a hollow frame structure and a ring groove on its lower side for placing the silk screen body, two discharge holes respectively arranged on two sides of the main body in width direction, and
The bottom plate adopts a frame body structure with a hollow inside and a through up and down structure, and is detachably connected to the lower side surface of the main body;
The upper side surface of the bottom plate is provided with a gasket which is suitable for being embedded into the annular groove and abutting against the lower side surface of the silk screen body, and when the silk screen body is placed into the annular groove and connected with the bottom plate, the bottom plate abuts against the silk screen body through the gasket and the gasket is in an elastic shrinkage state.
In one possible implementation mode, the main body is provided with a positioning hole penetrating in the up-down direction, the upper side surface of the bottom plate is provided with an upward extending counterpoint screw rod, and the counterpoint screw rod is in threaded connection with a butt joint nut;
When the main body is connected with the bottom plate, the alignment screw rod is suitable for passing through the positioning hole and extending out, and the butt nut is abutted against the upper side surface of the main body.
In one possible implementation manner, a plurality of connecting rods are detachably connected to two outer walls of the net frame facing the width direction of the net frame, wherein the connecting rods are arranged at intervals along the length direction of the net frame, and the axial direction of each connecting rod is parallel to the width direction of the net frame;
And each baffle is provided with a plurality of through holes corresponding to the connecting rods on the same side one by one, and each connecting rod is suitable for extending out through the corresponding through hole so as to support the baffle and limit the baffle to move along the length direction of the net frame.
In one possible implementation, the extending end of the connecting rod is provided with a convex sphere which is made of elastic material and adopts a spherical structure;
When the convex sphere is positioned in the through hole, the convex sphere is elastically deformed;
when the connecting rod passes through the through hole and stretches out, the convex sphere abuts against one side of the baffle plate, which faces away from the net frame, and the baffle plate abuts against the outer side face of the net frame.
In one possible implementation manner, a sliding block is slidably connected in each discharging hole, a linkage piece is arranged between the two sliding blocks, and a reserved hole which penetrates in the up-down direction and is used for a scraper to pass through is formed in the linkage piece.
In one possible implementation mode, the preformed hole is internally provided with a pressing plate, the pressing plate is connected with the linkage piece in a sliding way along the length direction of the net frame, and the pressing plate is also connected with an elastic reset piece;
When the scraper passes through the preformed hole, the pressing plate abuts against one side of the scraper, which faces the length direction of the net frame, and the elastic reset piece is in an elastic deformation state.
In one possible implementation manner, the pressing plate is provided with a plurality of guide rods extending along the length direction of the net frame, and each guide rod penetrates through the linkage piece and extends out;
When the pressing plate abuts against the scraper, each spring is in an elastic compression state.
In one possible implementation, the platen further includes:
the connecting plate is arranged on the outer side of the linkage piece and is connected with the guide rods;
And the net frame is provided with avoiding holes communicated with the inside of the net frame and used for the connecting plates to pass through.
In one possible implementation manner, two sides of the screen frame facing the width direction of the screen frame are provided with a protective film, the protective film is positioned on the upper side of the baffle, and the protective film is avoided from the discharge hole.
According to the embodiment of the application, the upper side slurry of the silk screen body can be limited by matching the silk screen frame with the silk screen body, on the basis, when more slurry is scraped by the scraper, the excessive slurry is discharged to the outer side of the silk screen frame through the discharge hole, so that the slurry is prevented from flowing to the upper side surface of the silk screen frame and being adversely affected by the recovery of the slurry, and meanwhile, the baffle plate can also bear the discharged slurry, so that the slurry can be recovered rapidly.
Compared with the prior art, the solar cell printing screen provided by the embodiment can avoid slurry to pass through the upper edge of the screen frame, realize timely recovery of redundant slurry, and ensure the recovery efficiency of the slurry.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a solar cell printing screen according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an exploded view of a frame used in an embodiment of the present application;
FIG. 3 is an enlarged partial schematic view of circle A in FIG. 2;
FIG. 4 is a schematic perspective view of a main body according to an embodiment of the present application;
FIG. 5 is an enlarged partial schematic view of a body employed in an embodiment of the present application in cross-sectional view;
FIG. 6 is a partial schematic view of a baffle plate employed in an embodiment of the present application;
FIG. 7 is a schematic view of a combination of a linkage and a platen as used in an embodiment of the present application;
FIG. 8 is a partially enlarged schematic illustration of circle B in FIG. 7;
FIG. 9 is a schematic cross-sectional view of a linkage and a platen as employed in an embodiment of the present application;
The reference numerals are 1, a silk screen body, 2, a screen frame, 21, a main body, 211, a discharging hole, 212, an annular groove, 213, a positioning hole, 214, a avoiding hole, 22, a bottom plate, 221, a gasket, 222, a positioning screw, 223, a docking nut, 3, a baffle, 31, a through hole, 4, a connecting rod, 41, a convex sphere, 5, a sliding block, 6, a linkage piece, 61, a preformed hole, 7, a pressing plate, 71, a guide rod, 72, a connecting plate, 8, an elastic reset piece, 9 and a protective film.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be 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 be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 9 together, a description will now be given of a solar cell printing screen according to the present application. The application provides a solar cell printing screen, which comprises a screen body 1 and a screen frame 2.
The screen frame 2 is fixedly sleeved on the periphery of the screen frame 1, and the upper side surface and the lower side surface of the screen frame 2 are respectively positioned above and below the screen frame 1.
The two sides of the screen frame 2 facing the width direction of the screen frame 2 are provided with discharge holes 211, one end of each discharge hole 211 facing the inner side of the screen frame 2 (namely, the inlet end of each discharge hole 211) is positioned above the screen body 1, the discharge holes 211 are obliquely arranged upwards in the direction facing the inner side of the screen frame 2, and when slurry enters the discharge holes 211, the slurry flows out along the inclined surface under the influence of self gravity.
Two outer walls of the screen frame 2 facing the width direction of the screen frame 2 are detachably connected with a baffle plate 3, and the baffle plate 3 is positioned below one end of the discharge hole 211 facing the outer side of the screen frame 2 (namely, the outlet end of the discharge hole 211) for receiving slurry output from the discharge hole 211.
In the embodiment of the application, the screen frame 2 and the screen body 1 are matched to limit the slurry on the upper side of the screen body 1, on the basis, when the slurry is more and is not scraped by a scraper, the excessive slurry is discharged to the outer side of the screen frame 2 through the discharge holes 211, so that the slurry is prevented from flowing to the upper side of the screen frame 2 and adversely affecting the recovery of the slurry, and meanwhile, the baffle 3 can also bear the discharged slurry, so that the slurry can be recovered rapidly.
Compared with the prior art, the solar cell printing screen provided by the embodiment can avoid slurry to pass through the upper edge of the screen frame 2, realize timely recovery of redundant slurry, and ensure the recovery efficiency of the slurry.
In some embodiments, as shown in fig. 1-4, the frame 2 includes a main body 21 and a bottom plate 22.
The main body 21 has a frame structure with a hollow interior and a vertically penetrating structure, the lower side surface of the main body is provided with an annular groove 212 which is communicated with the interior and is suitable for placing the silk screen body 1, and two discharge holes 211 are respectively arranged on two sides of the main body 21 towards the width direction of the main body.
The bottom plate 22 has a frame structure with a hollow interior and vertically penetrating (matching with the main body 21), and is detachably connected to the lower side surface of the main body 21.
Wherein the upper side of the bottom plate 22 is provided with a gasket 221 adapted to be embedded in the annular groove 212, abutting against the lower side of the screen body 1.
By adopting the above technical scheme, when the screen body 1 is placed in the annular groove 212, 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.
In some embodiments, as shown in fig. 3, the main body 21 has a positioning hole 213 penetrating in the up-down direction, the upper side of the bottom plate 22 has an alignment screw 222 extending upward, and a pair of docking nuts 223 are screwed on the alignment screw 222.
By adopting the above technical scheme, 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 is abutted against the upper side surface of the main body 21.
In some embodiments, as shown in fig. 7 to 9, a plurality of connecting rods 4 are detachably connected to two outer walls of the mesh frame 2 facing the width direction of the mesh frame, wherein the plurality of connecting rods 4 are arranged at intervals along the length direction of the mesh frame 2, and the axial direction of each connecting rod 4 is parallel to the width direction of the mesh frame 2.
And a plurality of through holes 31 corresponding to the connecting rods 4 on the same side are formed in each baffle plate 3, and each connecting rod 4 is suitable for passing through the corresponding through hole 31 and extending out so as to support the baffle plate 3 and limit the baffle plate 3 to move along the length direction of the net frame 2.
In some embodiments, as shown in fig. 1, 3 and 6, the protruding end of the connecting rod 4 has a convex sphere 41, and the convex sphere 41 is made of an elastic material and has a spherical structure.
When the convex sphere 41 is positioned in the through hole 31, the convex sphere 41 is elastically deformed;
When the connecting rod 4 passes through the through hole 31 and protrudes, the convex sphere 41 abuts against one side of the baffle 3 facing away from the net frame 2, and the baffle 3 abuts against the outer side surface of the net frame 2, so as to limit the movement of the baffle 3 along the width direction of the net frame 2.
In some embodiments, as shown in fig. 5 and 8, a sliding block 5 is slidably connected in each discharge hole 211, a linkage member 6 is disposed between the two sliding blocks 5, and a preformed hole 61 is formed on the linkage member 6 and penetrates in the vertical direction for passing the doctor blade.
By adopting the technical scheme, on one hand, the sliding block 5 can push and extrude the slurry in the discharge hole 211, so that the recovery difficulty of the slurry in the discharge hole 211 is reduced, and on the other hand, the linkage piece 6 can effectively guide the scraper, so that the product effect of screen printing is ensured.
In some embodiments, as shown in fig. 7 to 9, the preformed hole 61 is provided with a pressing plate 7, the pressing plate 7 is connected with the linkage member 6 in a sliding manner along the length direction of the net frame 2, and the pressing plate 7 is also connected with an elastic reset member 8;
When the scraper passes through the preformed hole 61, the pressing plate 7 abuts against one side of the scraper facing the length direction of the screen frame 2, and the elastic reset piece 8 is in an elastic deformation state, so that the structural stability between the pressing plate 7 and the scraper is improved.
In some embodiments, as shown in fig. 7 to 9, the pressing plate 7 is provided with a plurality of guide rods 71 extending along the length direction of the net frame 2, each guide rod 71 penetrates through the linkage member 6 and extends out, the elastic reset member 8 is a plurality of springs sleeved on the plurality of guide rods 71, and the guide rods 71 realize the sliding connection relationship between the linkage member 6 and the net frame 2 along the length direction of the net frame 2.
By adopting the technical scheme, when the pressing plate 7 is abutted against the scraper, each spring is in an elastic compression state.
In some embodiments, as shown in fig. 7 to 9, the pressing plate 7 further includes a connection plate 72, and the connection plate 72 is disposed at an outer side of the linkage member 6 and connected to the plurality of guide bars 71 to synchronize the synchronized movement of the plurality of guide bars 71.
The frame 2 is provided with a relief hole 214 for the connection plate 72 to pass through, which communicates with the inside of the frame, and the presence of the relief hole 214 ensures that the end face of the link 6 can abut against the inner wall of the frame 2.
In some embodiments, as shown in fig. 1, both sides of the screen frame 2 facing the width direction thereof are provided with a protective film 9, the protective film 9 is positioned on the upper side of the baffle 3, and the protective film 9 is disposed to avoid the discharge hole 211.
By periodically replacing the protective film 9, the outer wall of the net frame 2 can be ensured to be neat, and the cleaning difficulty of high-viscosity slurry can be reduced.
The above description is merely illustrative of the preferred embodiments of the present application and should not be taken as limiting the application, but all modifications, equivalents, improvements and changes within the spirit and principles of the application are intended to be included within the scope of the present application.