Photovoltaic glass automatic screen printing machine capable of continuously operating

Abstract

The invention relates to the technical field of photovoltaic glass processing screen printing, and discloses a photovoltaic glass automatic screen printing machine capable of continuous operation, which comprises a conveying table, a bracket is fixedly connected to the outer side of the middle of the conveying table, a transverse driving rail is mounted on the bracket, and a moving frame is mounted on the outer side of the transverse driving rail; and a liquid storage tank is installed at the top of the moving frame, and two linear driving rails are installed on the two sides of the bottom of the moving frame correspondingly. According to the device, the adjusting pieces can move relatively, so that coatings in redundant spaces on the two sides of the upper surface of the screen printing net can be pushed to the middle to be fully utilized and prevented from being accumulated and deposited on the two sides, and therefore the device is provided with the imprinting pieces, has the flexible width adjusting and adapting effect, adapts to different glass printing operations and is flexible, convenient and fast to use. And redundant coatings on the two sides of the silk screen surface are pushed and concentrated in real time, so that the redundant coatings are fully used, deposition and hardening are avoided, and the continuous silk screen effect is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic glass processing and silk-screen printing, and more specifically to a photovoltaic glass automatic silk-screen printing machine capable of continuous operation. Background Art

[0002] Photovoltaic glass, also known as photoelectric glass, is a special glass that uses solar radiation to generate electricity and has relevant current lead-out devices. In order to improve the efficiency of power generation, some manufacturers will apply highly reflective glaze on photovoltaic glass, and a silk screen printing machine is needed at this time.

[0003] A screen printer is a machine that uses a screen printing plate to print, and is a type of printing machine. A screen printer is a machine that prints text and images, and is a general term for machines or equipment used to produce printed products. A screen printer is a more representative printing device among stencil printers. In addition to silk, the materials used to make the screen can also be nylon wire, copper wire, steel wire or stainless steel wire. It can be divided into flat screen printers, curved screen printers, rotary screen printers, etc.

[0004] With the development of technology, the application of fully automatic screen printing machines is becoming more and more widespread. Among them, the shuttle screen printing machine uses a transmission mechanism to convey the glass in a flowing manner, so that it passes under the printing part of the fully automatic screen printing machine, and then lifts the glass up to fit the screen printing surface through the lifting and positioning component to realize automatic printing and transportation, and realize sustainable continuous operation.

[0005] For example, the patent with application number 2022226535436 discloses an automatic silk-screen printing machine for photovoltaic glass. An automatic silk-screen printing machine for photovoltaic glass with simple operation and efficient positioning is provided. Such an automatic silk-screen printing machine for photovoltaic glass is provided, including a bracket, a roller, an electric slide rail, etc.; a number of rollers for conveying photovoltaic glass are symmetrically and rotatably connected on both sides of the width direction of the bracket, and telescopic limit rods for effectively limiting photovoltaic glass of different specifications are symmetrically connected on both sides of the length direction of the inner length of the bracket, and electric slide rails are symmetrically arranged on both sides of the length direction of the top of the bracket. The ink storage box and the silk-screen block are driven to reciprocate linearly along the guide rod on the electric slide rail through the cooperation of the electric slider and the support frame, and photovoltaic glass of different specifications can be effectively fixed on the roller through the telescopic limit rod, so as to realize efficient positioning and automatic silk-screen printing functions.

[0006] However, the existing automatic screen printing machines still have the following shortcomings: (1) In order to fully cover the entire back of the photovoltaic glass, the area of ​​the screen surface must be larger than the glass surface. As a result, when adding material to the upper part of the screen surface of the paint box, the liquid paint will cover the entire top of the screen surface. When moving the stamping part, the width of the stamping part adapts to the width of the glass surface. The paint between the two ends of the stamping part and the screen surface frame will always stay in this space. During the continuous screen printing process, the residual paint from the two times can never be consumed or recycled. It is easy to deteriorate and harden when in contact with air for a long time, which will affect the subsequent printing effect.

[0007] (2) In addition, the current size of the stamping parts is generally fixed. Therefore, when screen printing is performed on photovoltaic glass of different widths, the stamping parts are difficult to adjust and adapt. Generally, replacement is adopted. This operation takes a long time and affects the working efficiency of the equipment. Summary of the invention

[0008] In view of the problems existing in the prior art, the purpose of the present invention is to provide a photovoltaic glass automatic silk screen printing machine that can operate continuously to solve the background technical problems.

[0009] To achieve the above object, the present invention adopts the following technical solution: The automatic silk screen printing machine for photovoltaic glass that can operate continuously comprises a conveying platform, a bracket is fixedly connected to the outer side of the middle part of the conveying platform, a transverse driving rail is installed on the bracket, a moving frame is installed on the outer side of the transverse driving rail, a liquid storage tank is installed on the top of the moving frame, two linear driving rails are respectively installed on both sides of the bottom of the moving frame, a discharging piece and a scraping piece are respectively installed on the two linear driving rails on the same side, the discharging piece is communicated and cooperated with the liquid storage tank, a positioning frame is fixedly installed inside the bracket, a silk screen mesh is fixedly connected to the bottom of the inner side of the positioning frame, transversely arranged conveying rollers are installed on the conveying platform, a lifting positioning piece is installed in the middle part of the conveying platform, adjusting pieces are installed on both sides of the positioning frame, and the two adjusting pieces are in contact with the silk screen mesh, and two driving frames are installed on the top of the conveying platform, and the opposite sides of the two driving frames extend to the gap of the conveying rollers, and the opposite sides of the two driving frames are equidistantly connected with rotating guide rollers.

[0010] As a further description of the above technical solution: a cavity is opened inside the left side of the positioning frame, a soft tube is fixedly connected to the top of the cavity, a liquid pump is fixedly installed on the left side of the liquid storage tank, the input end of the liquid pump is fixedly connected to the soft tube, the output end of the liquid pump is plugged into the interior of the liquid storage tank, and the side of the cavity facing the silk screen is opened with equidistantly arranged reflow holes, and the bottom of the reflow holes is higher than the upper surface of the silk screen.

[0011] As a further description of the above technical solution: the discharge part includes two first cylinders and a telescopic sleeve, the outer sides of the two first cylinders are respectively installed on the two linear drive rails on the left, the bottom ends of the two first cylinders are respectively fixedly connected to the two movable ends of the telescopic sleeve that are far away from each other, and a liquid outlet gap is opened at the bottom of the telescopic sleeve.

[0012] As a further description of the above technical solution: the scraping and pressing part includes two second cylinders, an inner slide, an outer slide and two scrapers, the outer sides of the two second cylinders are respectively installed on the two linear drive rails on the right side, one end of the inner slide is inserted into the interior of the outer slide and slidably connected thereto, the opposite ends of the inner slide and the outer slide are respectively fixedly connected to the bottom ends of the two second cylinders, and the two scrapers are respectively fixedly connected to the bottom of the inner slide and the outer slide.

[0013] As a further description of the above technical solution: the opposite sides of the two scrapers are in sliding contact with each other, and the top of the scraper on the right side is slidably connected to the outer side of the outer slide.

[0014] As a further description of the above technical solution: the lifting and positioning component includes a hydraulic cylinder, a matrix frame and a plurality of electric suction cups, the bottom of the hydraulic cylinder is fixedly mounted on the conveying platform, the top of the hydraulic cylinder is fixedly connected to the matrix frame, the outer side of the matrix frame is slidably connected to the inner side of the conveying platform, and the electric suction cup is fixed to the upward end of the matrix frame.

[0015] As a further description of the above technical solution: the electric suction cup passes upward through the gap between the conveying rollers, and the electric suction cup is located directly below the screen printing screen.

[0016] As a further description of the above technical solution: the adjusting member includes a horizontal cylinder and a circular frame, one end of the horizontal cylinder is fixedly connected to the outer side of the positioning frame, the horizontal cylinder is located inside the circular frame and the movable end is fixedly connected to the circular frame, an opening is provided on the other side of the circular frame, the circular frame is slidably connected to the outer side of the silk screen through the opening on the other side, and the inner side of the circular frame is slidably connected to the outer side of the positioning frame.

[0017] As a further description of the above technical solution: two connecting plates are fixedly connected to the opposite sides of the two circular frames, and the two connecting plates are located above the silk-screen screen. A scraper strip is hinged on the side of the connecting plate close to the silk-screen screen, and springs arranged at equal distances are provided between the top of the scraper strip and the connecting plate, and the bottom of the scraper strip is in sliding contact with the surface of the silk-screen screen.

[0018] As a further description of the above technical solution: a curved transition surface is provided on one side of the bottom of the scraper strip close to the positioning frame, and grooves arranged at equal distances are provided on the curved transition surface.

[0019] Compared with the prior art, the advantages of the present invention are: (1) This solution achieves width adjustment through the two adjusting parts on the positioning frame in conjunction with the discharge part and the scraper, so as to achieve flexible adaptation to the glass width adjustment. At the same time, in order to ensure the printing effect, the adjusting parts are synchronously started to move relative to each other to limit the area of ​​the silk screen to match the width of the photovoltaic glass, avoiding a large difference between the silk screen area and the glass surface area, which would cause wrinkles and jitters during the printing process, thereby ensuring the printing quality.

[0020] (2) In this solution, the adjusting parts can be relatively moved, so the paint in the redundant space on both sides of the upper surface of the screen printing net can be pushed to the middle, so that it can be fully utilized and avoid accumulation and deposition on both sides. In this way, the device has the advantages of flexible width adjustment and adaptation of the pressing parts, which can adapt to different glass printing operations, is flexible and convenient, and effectively guarantees the effect of continuous screen printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A; Figure 3 It is a schematic diagram of the side cross-sectional structure of the present invention; Figure 4 for Figure 3 A magnified schematic diagram of the structure of the middle B section; Figure 5 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the top view structure of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the side view of the circular frame of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the scraper strip of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the discharge piece of the present invention.

[0022] Description of the numbers in the figure: 1. Conveying platform; 2. Bracket; 3. Horizontal driving rail; 4. Moving frame; 5. Liquid storage tank; 51. Liquid pump; 6. Linear driving rail; 7. Discharging member; 71. First cylinder; 72. Telescopic sleeve; 73. Liquid outlet slot; 8. Scraping member; 81. Second cylinder; 82. Inner slide; 83. Outer slide; 84. Scraper; 9. Positioning frame; 91. Cavity; 92. Soft conduit; 93. Reflux hole; 10. Silk screen; 11. Conveying roller; 12. Lifting and positioning member; 121. Hydraulic cylinder; 122. Matrix frame; 123. Electric suction cup; 13. Rotating guide roller; 14. Adjusting member; 141. Horizontal cylinder; 142. Reciprocating frame; 1421. Connecting plate; 1422. Scraping strip; 1423. Spring; 1424. Arc transition surface; 1425. Groove; 15. Driving frame. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] See also Figure 1-9 In the present invention, the photovoltaic glass automatic silk screen printing machine capable of continuous operation comprises a conveying platform 1, a bracket 2 is fixedly connected to the outer side of the middle of the conveying platform 1, a transverse driving rail 3 is installed on the bracket 2, a mobile frame 4 is installed on the outer side of the transverse driving rail 3, a liquid storage tank 5 is installed on the top of the mobile frame 4, two linear driving rails 6 are respectively installed on both sides of the bottom of the mobile frame 4, a discharge piece 7 and a scraper 8 are respectively installed on the two linear driving rails 6 on the same side, the discharge piece 7 is connected and matched with the liquid storage tank 5, and a positioning frame 9 is fixedly installed inside the bracket 2 A screen printing screen 10 is fixedly connected to the bottom of the inner side of the positioning frame 9, and a conveying roller 11 driven by a motor and arranged horizontally is installed on the conveying platform 1. A lifting positioning member 12 is installed in the middle of the conveying platform 1. Adjusting members 14 are installed on both sides of the positioning frame 9. The two adjusting members 14 are in contact with the screen printing screen 10. Two driving frames 15 are installed on the top of the conveying platform 1. The opposite sides of the two driving frames 15 extend to the gap of the conveying roller 11, and the opposite sides of the two driving frames 15 are equidistantly connected to the rotating guide roller 13.

[0025] In the present invention, the conveying platform 1 is used as the main body of the device. When in use, the conveying roller 11 on the conveying platform 1 is first started to rotate, and then the photovoltaic glass is placed on the conveying platform 1, and the conveying roller 11 is started to drive the photovoltaic glass to move forward in a straight line for conveying, and the two driving frames 15 are started to drive the rotating guide rollers 13 to run relatively synchronously. The driving frame 15 is driven by a linear electric driving track as a driving unit, which contacts the two sides of the photovoltaic glass to center the position of the photovoltaic glass, making its conveying position more precise, and then the photovoltaic glass cup conveying roller 11 is conveyed to the top of the lifting positioning member 12, that is, the position directly below the silk screen 10. At this time, the conveying roller 11 stops running, and then the lifting positioning member 12 is started to rise and contact the bottom of the photovoltaic glass. At this time, the top of the lifting positioning member 12 is only in contact with the bottom surface of the photovoltaic glass without adsorption. When the photovoltaic glass rises to the side and enters the space between the two adjusting members 14, and the top of the photovoltaic glass is close to the silk screen When the screen 10 is not in contact, the two adjusting parts 14 are started to move relative to each other and contact the glass from both sides to center it. At this time, the lifting and positioning parts 12 realize adsorption and positioning of the glass, and rise again to make the top surface of the photovoltaic glass contact the bottom of the screen printing screen 10, and then start the transverse drive rail 3 on the bracket 2 to drive the movable frame 4 and the liquid storage tank 5 as well as the discharge part 7 and the scraper and pressure part 8 to run from right to left. While running, the discharge part 7 is opened to allow the coating to flow out and pave the upper surface of the screen printing screen 10, and then the scraper and pressure part 8 is started to descend and contact the screen printing screen 10 to imprint the bottom glass, and the transverse drive rail 3 is started to drive the movable frame 4 to reset, so that the scraper and pressure part 8 moves from left to right to imprint the entire upper surface of the glass. After the imprinting is completed, the lifting and positioning parts 12 descend and reset to drive the photovoltaic glass to re-contact the bottom conveying roller 11, and then the conveying roller 11 is started to rotate to realize discharging, and synchronous feeding is realized to realize continuous operation.

[0026] And when the width of the glass changes, the linear drive rail 6 on the movable frame 4 can be directly started according to the width of the glass. The two linear drive rails 6 on the same side can synchronously drive the discharge member 7 and the scraper 8 to shrink and extend, so as to achieve flexible adaptation to the glass width adjustment. At the same time, in order to ensure the printing effect, the adjusting member 14 is synchronously started to move relatively to limit the area of ​​the silk screen 10 to adapt to the width of the photovoltaic glass, so as to avoid the large difference between the area of ​​the silk screen 10 and the surface area of ​​the glass, and the generation of wrinkles and jitters during the printing process, thereby ensuring the printing quality. At the same time, the adjusting member 14 can move relatively, so the paint in the redundant space on both sides of the upper surface of the silk screen 10 can be pushed to the middle, so that it can be fully utilized to avoid accumulation and deposition on both sides, thereby achieving the device with flexible width adjustment of the printing member. The adaptation effect can adapt to different glass printing operations, is flexible and convenient, and can realize real-time promotion and concentration of redundant coatings on both sides of the screen surface, so that they can be fully used to avoid deposition and hardening, effectively ensuring the advantages of continuous screen printing effects, and solving the problem that the current size of the stamping parts in the prior art is generally fixed. Therefore, when screen printing is performed on photovoltaic glass of different widths, the stamping parts are difficult to adjust and adapt, and generally a replacement method is adopted. Such operation and replacement takes a long time, which will affect the work efficiency of the equipment, and the coating between the two ends of the stamping parts and the screen surface frame will always stay in this space. During the continuous screen printing process, the residual coatings from the two times can never be consumed or recycled. It is easy to deteriorate and harden due to long-term contact with air, which will affect the subsequent printing effects.

[0027] See also Figure 1 and Figure 5 , wherein: a cavity 91 is opened inside the left side of the positioning frame 9, a soft tube 92 is fixedly connected to the top of the cavity 91, a liquid pump 51 is fixedly installed on the left side of the liquid storage tank 5, the input end of the liquid pump 51 is fixedly connected to the soft tube 92, and the output end of the liquid pump 51 is plugged into the inside of the liquid storage tank 5, and the side of the cavity 91 facing the silk screen 10 is opened with equidistantly arranged reflow holes 93, and the bottom of the reflow hole 93 is higher than the upper surface of the silk screen 10.

[0028] In the present invention, through the cooperation between the cavity 91 and the reflux hole 93, when the scraper 8 moves and presses the upper surface of the screen printing mesh 10, part of the paint is squeezed downward and consumed, and the excess paint is pushed by the scraper 8 until the scraper 8 moves to the side where the reflux hole 93 is located. If there is a lot of paint residue at this time and the liquid level is higher than the reflux hole 93, the excess paint will flow into the cavity 91, and then the liquid pump 51 is started to absorb and recover the paint inside the cavity 91 through the soft tube 92, and enter the next use cycle, thereby improving the utilization rate of the paint, reducing the surface paint residue of the screen printing mesh 10, and improving the printing effect.

[0029] See also Figure 1 and Fig. 9, wherein: the discharging member 7 includes two first cylinders 71 and a telescopic sleeve 72, the outer sides of the two first cylinders 71 are respectively mounted on the two linear drive rails 6 on the left, the bottom ends of the two first cylinders 71 are respectively fixedly connected to two movable ends of the telescopic sleeve 72 that are away from each other, and a liquid outlet gap 73 is opened at the bottom of the telescopic sleeve 72.

[0030] In the present invention, by starting the first cylinder 71, the telescopic sleeve 72 can be driven to move vertically to change the distance between the liquid outlet gap 73 and the top surface of the screen printing screen 10, so as to facilitate the release of the coating. At the same time, the two linear drive rails 6 on the left are started to drive the two first cylinders 71 to move relative to each other, which can drive the telescopic sleeve 72 to change its length to adapt to the change of the glass size and realize flexible adjustment.

[0031] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , wherein: the scraping and pressing member 8 includes two second cylinders 81, an inner slide 82, an outer slide 83 and two scrapers 84, the outer sides of the two second cylinders 81 are respectively mounted on the two linear drive rails 6 on the right side, one end of the inner slide 82 is inserted into the interior of the outer slide 83 and is slidably connected thereto, the opposite ends of the inner slide 82 and the outer slide 83 are respectively fixedly connected to the bottom ends of the two second cylinders 81, and the two scrapers 84 are respectively fixedly connected to the bottom of the inner slide 82 and the outer slide 83.

[0032] In the present invention, the two second cylinders 81 are started to drive the inner slide 82 and the outer slide 83 to move vertically synchronously, so as to drive the two scrapers 84 to adjust vertically, so as to achieve contact and separation with the screen printing screen 10. At the same time, the two linear drive rails 6 on the right side are started to drive the two second cylinders 81 to move relative to each other, so as to drive the inner slide 82 and the outer slide 83 to slide relative to each other, so as to achieve relative movement of the two scrapers 84 and change the overall length of the two scrapers 84, thereby achieving adaptive adjustment of the device to adapt to the width of the glass.

[0033] See also Figure 2 and Figure 4 , wherein: the opposite sides of the two scrapers 84 are in sliding contact with each other, and the bottom ends of the two scrapers 84 are on the same horizontal plane, and the top of the scraper 84 on the right side is slidably connected to the outer side of the outer slide 83.

[0034] In the present invention, the top of the scraper 84 on the right is slidably connected to the outer side of the outer slide 83, so that the structural stability of the device adjustment is better, and the two scrapers 84 are arranged on the left and right to achieve horizontal stacking distribution, so that the integrity of the overall downward imprint of the scraper 84 is guaranteed, and the length adjustment is convenient.

[0035] See also Figure 1 and Figure 3, wherein: the lifting and positioning member 12 includes a hydraulic cylinder 121, a matrix frame 122 and a plurality of electric suction cups 123, the bottom of the hydraulic cylinder 121 is fixedly mounted on the conveying platform 1, the top of the hydraulic cylinder 121 is fixedly connected to the matrix frame 122, the outer side of the matrix frame 122 is slidably connected to the inner side of the conveying platform 1, and the electric suction cup 123 is fixed to the upward end of the matrix frame 122.

[0036] In the present invention, the hydraulic cylinder 121 is started to drive the matrix frame 122 to slide vertically along the inside of the conveyor platform 1, so as to drive the electric suction cup 123 to move vertically to lift the photovoltaic glass so that it contacts the printing surface of the silk screen 10, and the electric suction cup 123 adsorbs and positions the photovoltaic glass, so that the photovoltaic glass remains stable during printing, and the structure is stable and efficient.

[0037] See also Figure 1 , wherein: the electric suction cup 123 passes upward through the gap between the conveying rollers 11 , and the electric suction cup 123 is located directly below the screen printing screen 10 .

[0038] In the present invention, the electric suction cup 123 can achieve non-interference vertical height adjustment through the gap of the conveying roller 11, and the structure is reasonable, so that stable and smooth contact with the glass can be achieved and height adjustment can be performed.

[0039] Please refer to the figure Figure 3 , Figure 5 and Figure 6 , wherein: the adjusting member 14 includes a horizontal cylinder 141 and a circular frame 142, one end of the horizontal cylinder 141 is fixedly connected to the outer side of the positioning frame 9, the horizontal cylinder 141 is located inside the circular frame 142 and the movable end is fixedly connected to the circular frame 142, the other side of the circular frame 142 is provided with an opening, the circular frame 142 is slidably connected to the outer side of the screen printing screen 10 through the opening on the other side, and the inner side of the circular frame 142 is slidably connected to the outer side of the positioning frame 9.

[0040] In the present invention, the horizontal cylinder 141 is started to drive the circular frame 142 to slide along the side of the positioning frame 9, so that the circular frames 142 on both sides run relative to each other to change the contact width of the silk screen 10. The bottom of the circular frame 142 is in synchronous sliding contact with the bottom surface and the top surface of the silk screen 10, so that it forms movable supporting side frames on both sides of the silk screen 10, ensuring the printing stability after adjustment.

[0041] See also Figure 7 and Figure 8, wherein: the two opposite sides of the two circular frames 142 are fixedly connected with connecting plates 1421, the two connecting plates 1421 are both located above the screen printing screen 10, and the side of the connecting plates 1421 close to the screen printing screen 10 is hinged with a scraper bar 1422, and springs 1423 arranged at equal distances are arranged between the top of the scraper bar 1422 and the connecting plates 1421, and the bottom of the scraper bar 1422 is in sliding contact with the surface of the screen printing screen 10.

[0042] In the present invention, when the scraper bar 1422 moves in the direction away from the positioning frame 9 on the circular frame 142, the friction between the scraper bar 1422 and the screen printing screen 10 makes the scraper bar 1422 perpendicular to the surface of the screen printing screen 10, thereby ensuring the concentration effect on the paint. When the scraper bar 1422 moves in the direction close to the positioning frame 9, the spring 1423 is stretched under the friction between the scraper bar 1422 and the screen printing screen 10, so that the scraper bar 1422 is tilted, reducing the friction effect on the screen printing screen 10, protecting the screen surface and reducing the tension of the screen printing screen 10.

[0043] See also Figure 7 and Figure 8 , wherein: an arc-shaped transition surface 1424 is provided on the bottom of the scraper strip 1422 near the positioning frame 9 , and grooves 1425 arranged at equal distances are provided on the arc-shaped transition surface 1424 .

[0044] In the present invention, the groove 1425 cooperates with the arc transition surface 1424. When the scraper bar 1422 moves toward the direction close to the positioning frame 9, due to the friction between the scraper bar 1422 and the silk screen 10, the scraper bar 1422 is tilted relative to the surface of the silk screen 10. At this time, the groove 1425 cooperates with the arc transition surface 1424 to prevent the residual paint printed on the surface of the silk screen 10 from being scraped to the boundary between the scraper bar 1422 and the positioning frame 9, thereby keeping the two side edges clean. At the same time, since the paint has a certain viscosity, the movement speed of the scraper bar 1422 driven by the two side circular frames 142 is greater than the natural diffusion speed of the paint, so the paint will not flow to the two side edges through the groove 1425.

[0045] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic glass automatic silk screen printing machine capable of continuous operation, comprising a conveying platform (1), characterized in that: A bracket (2) is fixedly connected to the outer side of the middle of the conveying platform (1), a transverse driving rail (3) is installed on the bracket (2), a moving frame (4) is installed on the outer side of the transverse driving rail (3), a liquid storage tank (5) is installed on the top of the moving frame (4), two linear driving rails (6) are respectively installed on both sides of the bottom of the moving frame (4), and a discharge piece (7) and a scraping piece (8) are respectively installed on the two linear driving rails (6) on the same side, and the discharge piece (7) is connected and cooperated with the liquid storage tank (5). A positioning frame (9) is fixedly installed inside the bracket (2), and the bottom of the inner side of the positioning frame (9) is The conveyor platform (1) is fixedly connected to a screen printing screen (10), the conveyor platform (1) is provided with conveyor rollers (11) arranged in a transverse direction and driven by a motor, a lifting and positioning member (12) is provided in the middle of the conveyor platform (1), and adjustment members (14) are provided on both sides of the positioning frame (9), and the two adjustment members (14) are in contact with the screen printing screen (10), and two driving frames (15) are provided on the top of the conveyor platform (1), and opposite sides of the two driving frames (15) extend to the gap of the conveyor rollers (11), and opposite sides of the two driving frames (15) are rotatably connected to rotating guide rollers (13) at equal distances.

2. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 1 is characterized in that: A cavity (91) is provided inside the left side of the positioning frame (9), a soft conduit (92) is fixedly connected to the top of the cavity (91), a liquid pump (51) is fixedly installed on the left side of the liquid storage tank (5), an input end of the liquid pump (51) is fixedly connected to the soft conduit (92), and an output end of the liquid pump (51) is plugged into the inside of the liquid storage tank (5), and a side of the cavity (91) facing the silk screen (10) is provided with equidistantly arranged return holes (93), and the bottom of the return holes (93) is higher than the upper surface of the silk screen (10).

3. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 1 is characterized in that: The discharge member (7) comprises two first cylinders (71) and a telescopic sleeve (72), the outer sides of the two first cylinders (71) are respectively mounted on two linear drive rails (6) on the left side, the bottom ends of the two first cylinders (71) are respectively fixedly connected to two movable ends of the telescopic sleeve (72) that are away from each other, and a liquid outlet slit (73) is provided at the bottom of the telescopic sleeve (72).

4. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 1 is characterized in that: The scraping member (8) comprises two second cylinders (81), an inner slide (82), an outer slide (83) and two scrapers (84); the outer sides of the two second cylinders (81) are respectively mounted on two linear drive rails (6) on the right side; one end of the inner slide (82) is inserted into the interior of the outer slide (83) and is slidably connected thereto; the ends of the inner slide (82) and the outer slide (83) facing away from each other are respectively fixedly connected to the bottom ends of the two second cylinders (81); and the two scrapers (84) are respectively fixedly connected to the bottoms of the inner slide (82) and the outer slide (83).

5. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 4 is characterized in that: The opposite sides of the two scrapers (84) are in sliding contact with each other, and the bottom ends of the two scrapers (84) are on the same horizontal plane, and the top of the scraper (84) on the right side is slidably connected to the outer side of the outer slide frame (83).

6. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 1 is characterized in that: The lifting and positioning member (12) comprises a hydraulic cylinder (121), a matrix frame (122) and a plurality of electric suction cups (123); the bottom of the hydraulic cylinder (121) is fixedly mounted on the conveying platform (1); the top of the hydraulic cylinder (121) is fixedly connected to the matrix frame (122); the outer side of the matrix frame (122) is slidably connected to the inner side of the conveying platform (1); and the electric suction cups (123) are fixed to the upward end of the matrix frame (122).

7. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 6 is characterized in that: The electric suction cup (123) passes upward through the gap between the conveying rollers (11), and the electric suction cup (123) is located directly below the screen printing screen (10).

8. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 1 is characterized in that: The adjusting member (14) comprises a horizontal cylinder (141) and a circular frame (142), one end of the horizontal cylinder (141) is fixedly connected to the outside of the positioning frame (9), the horizontal cylinder (141) is located inside the circular frame (142) and the movable end is fixedly connected to the circular frame (142), the other side of the circular frame (142) is provided with an opening, the circular frame (142) is slidably connected to the outside of the screen printing screen (10) through the opening on the other side, and the inner side of the circular frame (142) is slidably connected to the outer side of the positioning frame (9).

9. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 8 is characterized in that: A connecting plate (1421) is fixedly connected to opposite sides of the two circular frames (142), and the two connecting plates (1421) are both located above the screen printing screen (10). A scraper bar (1422) is hingedly connected to one side of the connecting plates (1421) close to the screen printing screen (10), and springs (1423) are arranged equidistantly between the top of the scraper bar (1422) and the connecting plates (1421), and the bottom of the scraper bar (1422) is in sliding contact with the surface of the screen printing screen (10).

10. The photovoltaic glass automatic silk screen printing machine capable of continuous operation according to claim 9 is characterized in that: A curved transition surface (1424) is provided on one side of the bottom of the scraper strip (1422) close to the positioning frame (9), and grooves (1425) arranged at equal distances are provided on the curved transition surface (1424).

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