CN218315751U - Adjustable tension printing screen without net knots - Google Patents

Abstract

The utility model discloses a non-net knot adjustable tension printing screen, which comprises a screen frame body and a screen printing plate, wherein the screen frame body is provided with a screen sliding connector comprising a screen stretching bottom plate and a stretching driving plate through a guiding and adjusting mechanism, the stretching driving plate is inserted into inner side plates of two frame bodies in the screen frame body, two sides of a screen in the screen printing plate are respectively bonded on the bottom surfaces of the corresponding screen stretching bottom plates, and the other two side edges are respectively fixedly connected with the outer sides of the inner side plates of the frame bodies; the gauze is connected with a metal plate layer through a high polymer material to form a complex, a printing pattern opening which penetrates through the complex is arranged on the complex, and the outer side of the metal plate layer is connected with a connecting gauze which is provided with a pulp penetrating pattern corresponding to the printing pattern opening. Adopt the utility model discloses a tension that no net knot adjustable tension printing half tone can not only adjust the tension of silk screen printing plate, increase of service life can also eliminate the resistance of warp and weft in the gauze to the thick liquids that see through the printing pattern, guarantees the grid line printing quality to improve the electric conductive property of grid line.

Description

Adjustable tension printing screen without net knots

Technical Field

The utility model relates to a screen printing plate for screen printing especially relates to a screen printing plate is used in printing of photovoltaic cell piece grid line.

Background

The silk-screen printing is carried out by utilizing the basic principle that hollow printing patterns on a silk-screen printing plate fixedly connected on a screen frame penetrate through ink and the parts of non-printing patterns do not penetrate ink. When printing, printing ink is poured into the scraping side of the screen printing plate, a certain pressure is applied to the printing ink on the screen printing plate by the scraping scraper, so that the printing ink is transmitted to the other side of the screen printing plate through the printing patterns and is pressed and adhered to a printing stock.

The screen printing plate has the advantages that the screen printing plate is scraped and extruded by the scraper in the printing process and is subjected to certain elastic deformation, after the screen printing plate is used for a period of time, the screen printing plate can also be subjected to certain plastic deformation, the print of the screen printing plate subjected to the plastic deformation is blurred, and the printing quality is inevitably influenced, so that if the screen printing plate subjected to the plastic deformation and loosened cannot be recovered by tension, the whole screen plate can only be scrapped, but the screen printing plate and the screen frame are fixedly connected by the adhesive, so that the screen printing plate of the conventional structure cannot be recovered by the tension of the screen printing plate.

The conventional screen printing plate is manufactured by forming a hollowed printing pattern on a gauze through a photosensitive adhesive, and printing ink adheres to a printing stock through warp and weft yarns forming a gauze fabric in the hollowed printing pattern to complete a printing process. Grid lines in the photovoltaic cell piece are generated by adhering slurry for forming the grid lines onto the cell piece in a screen printing mode, in order to improve the power generation efficiency of the photovoltaic cell piece, the larger the area of the photovoltaic cell piece capable of receiving sunlight is better, namely the smaller the area occupied by the grid lines on the cell piece is better, the width of the grid lines is required to be as thin as possible, but due to the existence of warp and weft yarn interweaving parts (net knots) forming a gauze fabric in a printing pattern, the slurry penetrating through the printing pattern is blocked, and if the printing pattern is too thin, problems of printing broken lines and the like are possibly caused, so that the conductivity of the grid lines playing a function of leading out charges of the photovoltaic cell piece is reduced, and the power generation efficiency of the photovoltaic cell piece is low.

SUMMERY OF THE UTILITY MODEL

Not enough to the above-mentioned that prior art exists, the utility model aims to solve the technical problem that a do not have adjustable tension of net knot printing half tone is provided, can not only adjust the tension of silk screen printing plate, the life of extension silk screen printing half tone can also eliminate in the greige gauze resistance to the thick liquids that see through the printing pattern, guarantees grid line printing quality to can improve the electric conductive property of grid line.

In order to solve the technical problem, the utility model discloses a no net knot adjustable tension printing screen, including screen frame body and screen plate, including the gauze in the screen plate, be provided with two screen sliding connectors movably through connecting guiding mechanism respectively in the screen plate frame body, two screen sliding connectors set up respectively in the relative both sides of screen frame body, this screen sliding connector includes screen tensioning bottom plate, screen tensioning bottom plate is located the bottom of one side of screen frame body, be provided with the stretch-draw drive board on the screen tensioning bottom plate, stretch-draw drive board and screen tensioning bottom plate mutually perpendicular, be equipped with the stretch-draw screw rod on the stretch-draw drive board, this stretch-draw screw rod passes screen frame body and adjusting nut connects soon; the stretching drive plate is inserted into the inner side of the screen frame body, frame body inner side plates are respectively arranged at two ends of the stretching drive plate, the frame body inner side plates are fixedly connected with corresponding edges of the screen frame body, and the bottom surface of each frame body inner side plate is flush with the bottom surface of the screen stretching bottom plate; a gauze clamping plate is arranged on the outer side of the inner side plate of the frame body, and the gauze clamping plate is fixedly connected with the inner side plate of the frame body through a screw; notches are arranged at four corners of the gauze, one group of opposite side edges of the gauze with the notches at the four corners are respectively bonded with the bottom surface of the wire mesh tensioning bottom plate on the corresponding wire mesh sliding connector, and the other group of opposite side edges are respectively bonded with the bottom surface of the corresponding frame inner side plate and fixedly connected between the outer side of the frame inner side plate and the wire mesh clamping plate through the wire mesh clamping plate; be connected with the metal sheet layer through macromolecular material layer on the gauze, be equipped with the printing pattern opening on gauze and the metal sheet layer that link as an organic whole through macromolecular material layer, this printing pattern opening runs through to the metal sheet layer from the gauze be connected with the connection gauze in the metal sheet layer outside, the mesh number of this connection gauze is less than the mesh number of gauze be equipped with through the photosensitive glue on the connection gauze and pass through thick liquid pattern, should pass through thick liquid pattern and printing pattern opening corresponding, the gauze is located the printing side, it is located the side of scraping the seal to connect the gauze.

In the structure, because the screen frame body is respectively provided with two screen sliding connectors movably through the connecting and guiding mechanism, the two screen sliding connectors are respectively arranged on two opposite sides of the screen frame body, the screen sliding connector comprises a screen tensioning bottom plate, the screen tensioning bottom plate is arranged at the bottom of one side of the screen frame body, the screen tensioning bottom plate is provided with a tensioning drive plate, the tensioning drive plate is mutually perpendicular to the screen tensioning bottom plate, the tensioning drive plate is provided with a tensioning screw, the tensioning screw penetrates through the screen frame body and is screwed with the adjusting nut, the bottom surface of the screen tensioning bottom plate of the screen sliding connector can be adhered to the side edge of the screen on the screen printing plate, the adjusting nut can drive the screen sliding connector to shift relative to the screen frame body through the tensioning screw and the tensioning drive plate, and therefore the screen printing plate is tensioned, and the connecting and guiding mechanism ensures that the screen printing plate cannot be deflected in the tensioning process.

The stretching drive plate is inserted into the inner side of the screen frame body, frame body inner side plates are respectively arranged at two ends of the stretching drive plate, the frame body inner side plates are fixedly connected with corresponding edges of the screen frame body, and the bottom surface of each frame body inner side plate is flush with the bottom surface of the screen stretching bottom plate; the screen clamping plates are arranged on the outer sides of the frame inner side plates and fixedly connected with the frame inner side plates through screws, and the side edges of the screen printing plates adjacent to the side edges of the screen printing plates bonded on the screen tensioning bottom plate can be clamped and fixedly connected between the outer sides of the frame inner side plates and the screen clamping plates.

The screen printing plate is characterized in that the four corners of the screen gauze are provided with notches, one group of opposite sides of the screen gauze with the notches at the four corners are respectively adhered to the bottom surface of the screen tensioning bottom plate on the corresponding screen sliding connector, the other group of opposite sides are respectively adhered to the bottom surfaces of the corresponding frame inner side plates and are fixedly connected between the outer sides of the frame inner side plates and the screen clamping plates through the screen clamping plates in a clamping way, the width of the four sides of the screen gauze on the screen printing plate with the notches can meet the installation requirements of the corresponding screen tensioning bottom plate and the screen clamping plates, and the two sides of the screen printing plate adhered to the screen tensioning bottom plate of the screen sliding connector can be driven by the adjusting nuts at the corresponding sides through the tensioning screws and the tensioning driving plates to shift relative to the screen printing plate frame body so that the screen printing plate is positioned at a proper installation position and tensioned; the two side edges of the screen printing plate adjacent to the side edges of the screen printing plate bonded on the screen tensioning bottom plate can be respectively attached to the bottom surfaces of the frame inner side plates of the corresponding sides and are fixedly clamped between the outer sides of the frame inner side plates and the gauze clamping plates, so that the screen printing plate can be installed smoothly, the use requirement of screen printing is met, the two side edges can be loosened in advance when the screen printing plate is tensioned if necessary, the screen printing plate is clamped and fixedly connected after tensioning, deflection deformation cannot occur after the screen printing plate is tensioned, and the printing quality is ensured.

The metal plate layer is connected to the gauze through the polymer material layer, the printing pattern opening is arranged on the gauze and the metal plate layer which are connected into a whole through the polymer material layer, the printing pattern opening penetrates from the gauze to the metal plate layer, and then the printing pattern opening penetrating from the gauze to the metal plate layer does not have the existence of gauze warps and wefts, and also does not have the existence of net knots formed by interweaving warps and wefts, and also eliminates the resistance of the gauze warps and wefts to slurry penetrating through the printing pattern, so that the printing quality of grid lines of the battery piece can be ensured, and the possibility of printing broken lines cannot exist even if the thin grid lines adopt the printing pattern opening; after the gauze is connected with the metal plate layer through the polymer material layer, the thickness of the opening of the printed pattern is increased from the thickness formed by coating the gauze with the conventional photosensitive resist to the thickness of a composite layer formed by the gauze, the polymer material layer and the metal plate layer, so that the thickness of a grid line printed on a battery piece is correspondingly increased, and the relatively thicker thickness of the grid line can have higher conductivity under the condition of the same width of the grid line; in addition, the printing pattern opening on the relatively thick composite layer can form a paste containing area for containing printing paste, so that the quality guarantee of the grid line printing process is facilitated; the arrangement of the metal plate layer can ensure that the opening of the printed pattern has higher size precision and the smoothness of the two sides of the opening, and further ensures the improvement of the grid line printing quality.

Furthermore, as the outer side of the metal plate layer is connected with the connecting gauze, the mesh number of the connecting gauze is smaller than that of the gauze, the connecting gauze is provided with the pulp penetrating pattern through the photosensitive adhesive, the pulp penetrating pattern corresponds to the opening of the printing pattern, the gauze is positioned on the printing side, and the connecting gauze is positioned on the scraping side, the connecting gauze connected on the outer side of the metal plate layer ensures that a composite layer formed by the gauze, the high polymer material layer and the metal plate layer is connected into an integral structure through the connecting gauze after the opening of the printing pattern is formed, and for the grid line printing patterns which are intersected vertically and horizontally of the photovoltaic cell piece, the composite layer area between the adjacent vertical and horizontal grid line printing pattern openings can not fall off and be lost; the mesh number of the connecting gauze is smaller than that of the gauze, so that the number of warp and weft yarns forming the connecting gauze is relatively less at the pulp penetrating pattern part corresponding to the printing pattern opening, the space between adjacent warp yarns or adjacent weft yarns is larger, the pulp penetrating resistance is smaller, the connecting gauze is positioned at the scraping side contacted with the printing scraper, the gauze is positioned at the printing side contacted with a photovoltaic cell sheet as a printing stock, in the scraping process, the pulp enters the pulp containing area through the connecting gauze with the smaller mesh number through the pulp penetrating pattern, the pulp can be adhered to the photovoltaic cell sheet without blocking, the pulp can be more smoothly conveyed in the printing process, and the printing quality is higher.

The utility model discloses a preferred embodiment, connect guiding mechanism for setting up dovetail and the dovetail between the face is corresponded with the half tone framework in side on silk screen stretch-draw bottom plate, the length direction of dovetail is perpendicular with the length direction that the half tone framework corresponds the limit. By adopting the embodiment, the dovetail groove and the dovetail joint are used as the connecting and guiding mechanism, so that the screen tensioning bottom plate can be guided and limited in the vertical direction, the left direction and the right direction relative to the screen frame body, and can only shift along the tensioning direction of the screen printing plate, thereby ensuring the precision of the screen printing plate.

The utility model discloses a another kind of preferred embodiment, the dovetail sets up in the half tone framework, and the dovetail that matches with the dovetail sets up on silk screen stretch-draw bottom plate. In this embodiment, the dovetail joint is provided in the screen frame body, so that the rigidity of the screen frame body can be enhanced, and the rigidity reduction and deformation which may be caused by providing the dovetail joint in the screen frame body can be avoided.

In another preferred embodiment of the present invention, one to three tension screws are provided on the tension driving plate. By adopting the embodiment, the requirement that the tension of the screen tensioning bottom plate is adjusted by the tensioning driving plate can be met by one to three tensioning screws.

The utility model discloses further preferred embodiment be equipped with a plurality of connection apertures on the sheet metal layer. By adopting the embodiment, the polymer material layer serving as the connecting layer between the gauze and the metal plate layer can be embedded into the connecting small holes arranged on the metal plate layer, so that the connection between the gauze and the metal plate layer is firmer.

In another preferred embodiment of the present invention, the metal plate layer is a metal foil layer with a thickness of 10 to 20 micrometers. By adopting the embodiment, the metal plate layer has good flexibility, and can generate corresponding shape change along with the gauze in the scraping and printing process, thereby meeting the printing requirement.

In a further preferred embodiment of the present invention, the polymer material layer is made of acid-base-resistant and high-tensile PET, PI, PTFE, PS, or other polymer synthetic materials. By adopting the embodiment, all the listed polymer synthetic materials can meet the connection requirements between the gauze and the metal plate layer and the use requirements of stability as a printing plate and the like.

In a further preferred embodiment of the present invention, the mesh is a synthetic fiber fabric. By adopting the embodiment, the synthetic fiber fabric is used as the gauze, so that the use requirement of the printing gauze can be met, and the cost is relatively low.

In a still further preferred embodiment of the present invention, the connection screen is a synthetic fiber fabric or a metal wire fabric. By adopting the embodiment, the synthetic fiber fabric or the metal wire fabric can meet the connection requirement that the connection gauze connects the composite layer formed by the gauze, the high polymer material layer and the metal plate layer into an integral structure after forming the printing pattern openings.

In a further preferred embodiment of the present invention, the connecting screen is adhesively connected to the metal sheet layer. By adopting the embodiment, the connection mode is convenient and reliable, and the connection requirement between the connection gauze and the metal plate layer can be met.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of an embodiment of the adjustable tension printing screen without a mesh knot of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a side view of the side of the structural screen slip connector of FIG. 1;

fig. 4 is a schematic structural view of a screen frame in the structure shown in fig. 1;

FIG. 5 is a schematic view of the construction of the wire mesh slip connector of the construction of FIG. 1;

fig. 6 is a schematic view of the structure of the screen plate in the structure shown in fig. 1;

FIG. 7 is a cross-sectional view of the structure shown in FIG. 6;

FIG. 8 is a left side view of the screen and sheet metal layer portion of the structure of FIG. 7;

FIG. 9 is an enlarged partial view of the area I in FIG. 8;

FIG. 10 is a right side view of the structure of FIG. 7 showing the connection of the gauze and the photoresist portion;

fig. 11 is a partial enlarged view of a portion II in fig. 10.

In the figure: 1-screen frame body, 2-screen sliding connector, 3-connecting guide mechanism, 4-adjusting nut, 5-stretching screw, 6-frame body inner side plate, 7-screen clamping plate, 8-dovetail joint, 9-screen stretching bottom plate, 10-stretching driving plate, 11-dovetail groove, 20-screen printing plate, 21-screen, 22-metal plate layer, 23-printing pattern opening, 24-connecting screen, 25-notch, 26-connecting small hole, 27-high polymer material layer, 28-connecting glue, 29-photosensitive glue, 210-slurry penetrating pattern, 211-printing side and 212-scraping side.

Detailed Description

In the screen knot-free adjustable tension printing screen shown in fig. 1, 2 and 3, a screen frame 1 is a component which is shaped like a Chinese character 'hui' in a plan view, a screen sliding connector 2 is movably arranged on the screen frame 1 through a connecting and guiding mechanism 3, the screen sliding connectors 2 are arranged in pairs, and the two screen sliding connectors 2 which are arranged in pairs are respectively arranged on two opposite sides of the screen frame 1; referring to fig. 5, the screen slippage connector 2 includes a screen tensioning bottom plate 9, a tensioning drive plate 10 is arranged on the screen tensioning bottom plate 9, the tensioning drive plate 10 is perpendicular to the screen tensioning bottom plate 9, a tensioning screw 5 is arranged on the tensioning drive plate 10, the tensioning screw 5 penetrates through the screen frame body 1 and is screwed with an adjusting nut 4, one tensioning screw 5 shown in the figure is located in the middle of the tensioning drive plate 10, of course, two or three tensioning screws 5 can be uniformly distributed along the length direction of the tensioning drive plate 10, and the screen tensioning bottom plate 9 is located at the bottom of the corresponding side of the screen frame body 1; the stretching drive plate 10 is inserted into the inner side of the screen frame body 1, frame body inner side plates 6 are respectively arranged at two ends of the stretching drive plate 10, the frame body inner side plates 6 are fixedly connected with the corresponding sides of the screen frame body 1 through screws, the bottom surfaces of the frame body inner side plates 6 are flush with the bottom surface of the screen stretching bottom plate 9, screen clamping plates 7 are arranged on the outer sides of the frame body inner side plates 6, and the screen clamping plates 7 are fixedly connected with the frame body inner side plates 6 through screws; the screen frame body 1 and the screen sliding connector 2 are both preferably made of aluminum alloy.

In a preferred embodiment, referring to fig. 4 and 5, the connection guide mechanism 3 is a dovetail groove 11 and a dovetail 8 provided between the upper side surface of the screen tensioning bottom plate 9 and the corresponding surface of the screen frame 1, the dovetail 8 is provided on the bottom surface of the screen frame 1, the dovetail groove 11 corresponding to the dovetail 8 is provided on the upper side surface of the screen tensioning bottom plate 9, and the longitudinal direction of the dovetail groove 11 is perpendicular to the longitudinal direction of the corresponding side of the screen frame 1.

Referring to fig. 6, the screen printing plate 20 includes a screen 21, and the screen 21 has notches 25 at four corners, as shown in fig. 2 and fig. 3, one set of opposite sides of the screen 21 with the notches 25 at the four corners is respectively adhered to the bottom surface of the screen tensioning bottom plate 9 on the corresponding screen sliding connector 2, and the other set of opposite sides is respectively adhered to the bottom surface of the corresponding frame inner side plate 6 and is fixedly clamped between the outer side of the frame inner side plate 6 and the screen clamping plate 7 through the screen clamping plate 7.

As shown in fig. 6 and 7, the gauze 21 is located on the printing side 211 opposite to the printing material, the metal plate layer 22 is connected to the gauze 21 through the polymer material layer 27, as a preferred embodiment, referring to fig. 8 and 9, the metal plate layer 22 is a metal foil layer with a thickness of 10 to 20 microns, such as a copper foil, a plurality of connecting small holes 26 are provided on the metal plate layer 22, the connecting small holes 26 are circular holes, of course, rectangular or other shaped holes, the plurality of connecting small holes 26 are uniformly distributed on the metal plate layer 22 in a plurality of rows and columns, the polymer material layer 27 is made of PET, PI, PTFE, PS or other polymer composite materials with acid and alkali resistance and high tensile force, the polymer composite material forming the polymer material layer 27 can be sandwiched between the gauze 21 and the metal plate layer 22 in a film form to combine the gauze 21 and the metal plate layer 22 into a composite body in a thermal compression manner, certainly, other process methods can also be adopted to combine the gauze 21 with the metal plate layer 22, the combined polymer synthetic material is coated on the gauze 21 and embedded into the connecting small holes 26 on the metal plate layer 22 to ensure reliable connection, the gauze 21 and the metal plate layer 22 which are connected into a whole through the polymer material layer 27 are provided with printing pattern openings 23 which are consistent with the distribution patterns of grid lines in the longitudinal and transverse directions on the photovoltaic cell, the patterns of the printing pattern openings 23 comprise a plurality of longitudinal openings and transverse openings which are mutually crossed, the printing pattern openings 23 penetrate from the gauze 21 to the metal plate layer 22, the printing pattern openings 23 are manufactured through laser processing, and the connecting small holes 26 on the metal plate layer 22 are distributed in a way of avoiding the printing pattern openings 23.

A connecting gauze 24 is connected to the outer side of the metal plate layer 22, the mesh number of the connecting gauze 24 is smaller than that of the gauze 21, referring to fig. 10 and 11, a pulp penetrating pattern 210 is arranged on the connecting gauze 24 through a photosensitive adhesive 29, the pulp penetrating pattern 210 corresponds to the printing pattern opening 23, and the connecting gauze 24 is a synthetic fiber fabric or a metal wire fabric as a preferred embodiment; the connecting screen 24 is located on the squeegee side 212 that contacts the squeegee blades on the screen printing machine.

As shown in fig. 7, the connection gauze 24 and the metal plate layer 22 are adhesively connected by the connection glue 28, and in the manufacturing process of the screen printing plate 20, it is necessary to ensure that local areas of a complex of the plurality of gauzes 21, the polymer material layer 27 and the metal plate layer 22 between adjacent longitudinal openings and transverse openings after the printing pattern openings 23 are formed by laser processing are not displaced or even fall off through a proper processing manufacturing process, for example, after the gauzes 21, the polymer material layer 27 and the metal plate layer 22 form a complex, a process connection layer is bonded on one side of the gauzes 21, the complex and the process connection layer are subjected to laser engraving processing to form the printing pattern openings 23 on the complex, but the process connection layer is not penetrated through, and the local areas of the complex of the plurality of gauzes 21, the polymer material layer 27 and the metal plate layer 22 between adjacent longitudinal openings and transverse openings are kept in the original positions by the process connection layer, and the displacement and falling off are not generated, and the process connection layer is removed after the complex connected with the connection gauze 24 by the connection glue 28, thereby ensuring that the screen printing plate 20 can be manufactured.

The above description has been presented only for the purpose of illustrating certain preferred embodiments of the invention, and it is not to be taken as a limitation on the invention, as many modifications and variations are possible. As described above, the connection guide mechanism 3 may be a guide hole and a guide post provided between the screen sliding connector 2 and the screen frame body 1, instead of the dovetail groove 11 and the dovetail 8 provided between the upper side surface of the screen tensioning bottom plate 9 and the corresponding surface of the screen frame body 1, the guide post may be provided on the tensioning drive plate 10 of the screen sliding connector 2, the guide hole corresponding to the guide post may be provided on the screen frame body 1, and the axial direction of the guide hole may be perpendicular to the longitudinal direction of the corresponding side of the screen frame body 1. As long as the improvement and the transformation made on the basis of the basic principle of the utility model are all considered to fall into the protection scope of the utility model.

Claims (10)

1. The utility model provides an adjustable tension printing half tone of no net knot, includes half tone frame body (1) and screen printing plate (20), includes gauze (21) in screen printing plate (20), its characterized in that: the screen frame body (1) is movably provided with two screen sliding connectors (2) through connecting guide mechanisms (3), the two screen sliding connectors (2) are respectively arranged on two opposite sides of the screen frame body (1), each screen sliding connector (2) comprises a screen tensioning bottom plate (9), each screen tensioning bottom plate (9) is located at the bottom of one side of the screen frame body (1), each screen tensioning bottom plate (9) is provided with a tensioning drive plate (10), each tensioning drive plate (10) is perpendicular to each screen tensioning bottom plate (9), each tensioning drive plate (10) is provided with a tensioning screw (5), and each tensioning screw (5) penetrates through the screen frame body (1) and is connected with an adjusting nut (4) in a rotating mode; the stretching drive plate (10) is inserted into the inner side of the screen frame body (1), frame body inner side plates (6) are respectively arranged at two ends of the stretching drive plate (10), the frame body inner side plates (6) are fixedly connected with corresponding edges of the screen frame body (1), and the bottom surfaces of the frame body inner side plates (6) are flush with the bottom surface of the screen stretching bottom plate (9); a gauze clamping plate (7) is arranged on the outer side of the frame inner side plate (6), and the gauze clamping plate (7) is fixedly connected with the frame inner side plate (6) through a screw; notches (25) are arranged at four corners of the gauze (21), one group of opposite side edges of the gauze (21) with the notches (25) at the four corners are respectively bonded to the bottom surface of the wire mesh tensioning bottom plate (9) on the corresponding wire mesh sliding connector (2), and the other group of opposite side edges are respectively bonded to the bottom surface of the corresponding frame inner side plate (6) and fixedly clamped between the outer side of the frame inner side plate (6) and the gauze clamping plate (7) through the gauze clamping plate (7); be connected with metal sheet layer (22) through macromolecular material layer (27) on gauze (21), be equipped with printing pattern opening (23) on gauze (21) and metal sheet layer (22) that link as an organic whole through macromolecular material layer (27), this printing pattern opening (23) run through to metal sheet layer (22) from gauze (21) be connected with connection gauze (24) in metal sheet layer (22) outside, the mesh of this connection gauze (24) is less than the mesh of gauze (21) be equipped with through sensitive glue (29) on connecting gauze (24) and permeate thick liquid pattern (210), should permeate thick liquid pattern (210) and printing pattern opening (23) corresponding, gauze (21) are located printing side (211), it is located scraping printing side (212) to connect gauze (24).

2. The knotless adjustable tension printing screen of claim 1, wherein: the connection guide mechanism (3) is a dovetail groove (11) and a dovetail joint (8) which are arranged between the upper side surface of the screen stretching bottom plate (9) and the corresponding surface of the screen frame body (1), and the length direction of the dovetail groove (11) is vertical to the length direction of the corresponding side of the screen frame body (1).

3. The knotless adjustable tension printing screen of claim 2, wherein: the dovetail joint (8) is arranged on the screen frame body (1), and the dovetail groove (11) matched with the dovetail joint (8) is arranged on the screen stretching bottom plate (9).

4. The knotless adjustable tension printing screen according to claim 1, 2 or 3, wherein: one to three tensioning screws (5) are arranged on the tensioning driving plate (10).

5. The adjustable tension printing screen without net knots of claim 1, wherein: and a plurality of connecting small holes (26) are formed in the metal plate layer (22).

6. The knotless adjustable tension printing screen according to claim 1 or 5, wherein: the metal plate layer (22) is a metal foil layer with the thickness of 10 microns to 20 microns.

7. The adjustable tension printing screen without net knots of claim 1, wherein: the polymer material layer (27) is made of PET, PI, PTFE or PS polymer synthetic materials which are resistant to acid, alkali and high tensile force.

8. The adjustable tension printing screen without net knots of claim 1, wherein: the gauze (21) is a synthetic fiber fabric.

9. The knotless adjustable tension printing screen of claim 1, wherein: the connecting gauze (24) is a synthetic fiber fabric or a metal wire fabric.

10. The knotless adjustable tension printing screen of claim 1, wherein: the connecting gauze (24) is connected with the metal plate layer (22) in an adhesive way.

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