CN115071254A - Screen printing machine for producing solar cell and using method thereof - Google Patents
Screen printing machine for producing solar cell and using method thereof Download PDFInfo
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- CN115071254A CN115071254A CN202211009311.5A CN202211009311A CN115071254A CN 115071254 A CN115071254 A CN 115071254A CN 202211009311 A CN202211009311 A CN 202211009311A CN 115071254 A CN115071254 A CN 115071254A
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- gear
- scraper
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- screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/0804—Machines for printing sheets
- B41F15/0813—Machines for printing sheets with flat screens
- B41F15/0818—Machines for printing sheets with flat screens with a stationary screen and a moving squeegee
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/40—Inking units
- B41F15/42—Inking units comprising squeegees or doctors
- B41F15/423—Driving means for reciprocating squeegees
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2215/00—Screen printing machines
- B41P2215/50—Screen printing machines for particular purposes
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Abstract
The invention discloses a screen printing machine for producing solar cells and a using method thereof, belonging to the technical field of printing machines and comprising a frame body, wherein the frame body is fixedly connected with a second air cylinder arranged in the vertical direction, the bottom end of the second air cylinder is connected with a frame, and the frame is detachably connected with a screen printing plate; the frame is connected with a sliding plate in a sliding mode, the sliding plate is connected with a first air cylinder, the first air cylinder is connected with the frame, and the sliding plate is connected with a first scraper plate and a second scraper plate which are arranged in the vertical direction in a sliding mode; the first scraper blade is connected with a second rack, the second scraper blade is connected with a third rack, the frame body is connected with a first support in a sliding mode, the first support is connected with a rotatable first gear, two ends of the first gear are meshed with the second rack and the third rack respectively, and the first gear is connected with a driving mechanism. The invention has convenient operation, can humidify the slurry in time in the printing process, and prevents the slurry from drying and blocking the screen printing plate, thereby effectively improving the printing quality and efficiency.
Description
Technical Field
The invention relates to the technical field of printing machines, in particular to a screen printing machine for producing solar cells and a using method thereof.
Background
In the manufacturing process of the solar cell, a back electrode, a back electric field and a positive electrode of the solar cell are manufactured by screen printing. Among them, the paste used for printing is generally expensive silver paste or silver aluminum paste.
The solar wafer screen printing machine of the prior art includes at present: the screen printing device comprises a printing table, wherein a screen printing plate is arranged on the printing table, a movable scraper is arranged above the screen printing plate, and the scraper moves back and forth along the screen printing plate in the printing process, so that printing is realized. However, in the existing screen printing machine, the scraper moves back and forth in the printing process, the used slurry is easy to dry and difficult to permeate the screen printing plate, so that the printing broken lines are more, the screen printing plate cannot be continuously used for printing, the screen printing plate is easy to block, and the production cost of the solar cell is increased.
Disclosure of Invention
In order to solve the problems in the prior art, a screen printing machine for producing solar cells and a using method thereof are provided.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a screen printing machine for producing solar cells, which comprises a frame body, wherein the frame body is fixedly connected with a second air cylinder arranged in the vertical direction, the bottom end of the second air cylinder is connected with a frame, and the frame is detachably connected with a screen printing plate; the frame is connected with a sliding plate in a sliding mode, the sliding plate is connected with a first air cylinder, the first air cylinder is connected with the frame, and the sliding plate is connected with a first scraper plate and a second scraper plate which are arranged in the vertical direction in a sliding mode; the first scraper blade is connected with a second rack, the second scraper blade is connected with a third rack, the frame body is connected with a first support in a sliding mode, the first support is connected with a rotatable first gear, two ends of the first gear are meshed with the second rack and the third rack respectively, and the first gear is connected with a driving mechanism.
Preferably, the upper end of the sliding plate is fixedly connected with a water tank, the second scraper plate is fixedly connected with a peristaltic pump, and the peristaltic pump is connected with a water pipe; one end of the water pipe is connected with a plurality of spraying pipes, the other end of the water pipe is communicated with the water tank, and the spraying pipes are connected with the second scraper plate.
Preferably, the frame fixed connection has the first rack that the horizontal direction set up, the peristaltic pump includes the power shaft, the fixed cover of power shaft is equipped with the second gear, the second gear setting is in directly over the first rack.
Preferably, the driving mechanism comprises a third gear, the frame body is connected with a second bracket in a sliding manner, the second bracket is fixedly connected with the first bracket, the third gear is rotationally connected with the second bracket, and the third gear is connected with the first gear; the upper end of the sliding plate is fixedly connected with a fourth rack arranged in the vertical direction, the fourth rack is meshed with the third gear, and the first support is rotationally connected with the first gear.
Preferably, the moving speed of the first scraper is greater than the moving speed of the frame, when the first scraper contacts with the screen, the second gear is disengaged from the first rack, in an initial state, the second scraper contacts with the screen, the second gear is engaged with the first rack, a gap is left between the first scraper and the screen, and the sum of the length of the gap and the moving length of the frame is equal to the arc length rotated by the first gear.
Preferably, the driving mechanism comprises a third gear, the frame body is connected with a second bracket in a sliding manner, and the third gear is rotationally connected with the second bracket; the upper end of the sliding plate is fixedly connected with a fourth rack arranged in the vertical direction, and the fourth rack is meshed with the third gear.
Preferably, the first bracket is provided with a sliding chute arranged in the vertical direction, a sliding block is arranged in the sliding chute in a sliding manner, the sliding block is rotatably connected with a rotating shaft, and the first gear is fixedly sleeved on the rotating shaft; the third gear is connected with a spline telescopic shaft through a universal coupling, and the other end of the spline telescopic shaft is connected with the rotating shaft.
Preferably, when the first scraper blade is contacted with the screen printing plate, the second gear is disengaged from the first rack; in an initial state, the second scraper blade is contacted with the screen printing plate, the second gear is meshed with the first rack at the moment, a gap is reserved between the first scraper blade and the screen printing plate at the moment, and the arc length of the first gear in rotation is equal to or larger than the length of the gap.
The invention also provides a using method of the screen printing machine for producing the solar cell, and the screen printing machine for producing the solar cell comprises the following steps:
s1: pouring the slurry into the frame, then placing the solar cell below the screen printing plate, and starting a second air cylinder, wherein the second air cylinder drives the frame and the sliding plate to move downwards for a specified distance;
s2: the sliding plate drives the fourth rack to descend, the fourth rack drives the third gear to rotate, the third gear drives the first gear to rotate, the first gear drives the first scraper plate to move downwards, the first scraper plate is in contact with the screen printing plate, meanwhile, the second scraper plate is driven to move upwards, and at the moment, the second gear is disengaged from the first rack;
s3: the first air cylinder works to drive the sliding plate to slide along the screen printing plate, under the action of the first scraper plate, the slurry is printed on the solar cell through the screen printing plate to finish the printing work, in the process, the first scraper plate and the second scraper plate drive the first support and the second support to move in the horizontal direction, then the first air cylinder stops working, the second air cylinder works to drive the frame and the sliding plate to reset;
s4: the sliding plate drives the first gear to rotate, so that the first scraper plate moves upwards, the second scraper plate moves downwards, the second scraper plate is in contact with the screen printing plate, and the second gear is meshed with the first rack;
s5: and then the first cylinder works to drive the sliding plate to move along the screen printing plate, so that the sliding plate is reset, the second scraper plate drives the slurry to be pushed to the initial position to wait for next printing, meanwhile, under the action of the first rack, the second gear rotates and drives the peristaltic pump to work, and water in the water tank is sprayed onto the slurry through the spraying pipe through the water pipe, so that the slurry is wet.
Preferably, in S2, when the first gear drives the first scraper to move downward, if the initial state of the slider is located at the bottom end of the sliding groove, and the arc length of the rotation of the first gear is greater than the sum of the gap between the first scraper and the screen printing plate and the length of the movement of the frame, the first gear drives the rotating shaft to slide upward in the sliding groove, and at this time, the spline telescopic shaft is lengthened, and at the same time, the spline telescopic shaft rotates around the universal coupling.
Compared with the prior art, the invention has the beneficial effects that:
1. the water chestnut printing device is provided with the water chestnut first gear, when the first gear rotates, the water chestnut first gear can drive the first scraper and the second scraper to move simultaneously, the moving directions of the first scraper and the second scraper are opposite, when the first cylinder drives the first scraper to move in the horizontal direction, the first scraper is matched with the screen printing plate, so that slurry can finish printing work through the screen printing plate, when the first cylinder drives the second scraper to move in the horizontal direction, the second scraper can enable the slurry to be stacked together, the next printing work can be conveniently carried out, and the slurry can be stirred to a certain extent through the staggered movement of the first scraper and the second scraper, so that the printing work can be conveniently carried out.
2. The peristaltic pump is further arranged, a power shaft of the peristaltic pump is connected with a second gear, when the second scraper moves, the second gear can be driven to work under the action of the first rack, the peristaltic pump is further driven to work, spraying is conducted, slurry is moistened, an additional power source is not needed, when the first scraper prints, the peristaltic pump cannot work, only when the second scraper contacts with the screen printing plate, the second gear can be meshed with the first rack, the peristaltic pump can be driven to work, control over the work of the peristaltic pump is achieved, the slurry spraying work is facilitated, the slurry can be timely humidified in the printing process, the slurry is prevented from drying and blocking the screen printing plate, and therefore the printing quality and efficiency are effectively improved.
3. The invention is also provided with a spline telescopic shaft, considering that the distance for controlling the frame to descend is sometimes required, through the sliding groove arranged on the first bracket, the first gear can move in the sliding groove in the vertical direction, therefore, when the distance of the downward movement of the frame is increased, the more the arc length of the first gear is rotated, the more the first scraper is driven to move, when the first scraper contacts with the screen plate, the first scraper cannot continuously move downwards along with the continuous rotation of the first gear, so that the first gear is driven to move upwards in the chute, under the action of the spline telescopic shaft and the universal coupling, the third gear can still drive the first gear to rotate, and meanwhile, the movement of the first scraper and the second scraper cannot be influenced, thereby being beneficial to controlling the descending distance of the frame and being convenient for printing work, and further improving the application range of the device.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a front view of the present invention in its entirety (working condition one);
FIG. 2 is an enlarged view of the structure of the portion K in FIG. 1;
FIG. 3 is a front view of the present invention in its entirety (working state two);
FIG. 4 is a schematic view of the structure of portion A-A of FIG. 3;
fig. 5 is a schematic structural view of part B-B in fig. 4.
Description of the reference numerals:
1, a frame; 2, a guide rod; 3, a frame body; 4 a sliding plate; 5 a first cylinder; 6 a first rack; 7, screen printing; 8, a guide rail; 9, a sliding block; 10 a second rack; 11 a first squeegee; 12 a third rack; 13 a second squeegee; 14 a first gear; 15 water tank; 16 water pipes; 17 a peristaltic pump; 18 a second gear; 19 a spray tube; 20 a first support; 21 a second cylinder; 22 a second support; 23 universal couplings; 24 spline telescoping shafts; 25 a fourth rack; 26 a third gear; 27 chute.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Example one
Referring to fig. 1-5, the present embodiment provides a screen printing machine for producing solar cells, which includes a frame body 3, wherein the frame body 3 is used for supporting the whole device, and when in use, the frame body 3 can be placed on a table, the ground, or other corresponding positions.
The second cylinder 21 that 3 upper ends fixedly connected with of support body vertical direction set up, second cylinder 21 bottom is connected with frame 1, and frame 1 can be dismantled and be connected with half tone 7, and wherein support body 3 still fixedly connected with a plurality of guide arm 2, frame 1 run through guide arm 2 and with guide arm 2 sliding connection, guide arm 2 plays spacing and guide's effect to the removal of frame 1.
The guide rod 2 is arranged in the vertical direction, the second air cylinder 21 is arranged above the frame 1, when the second air cylinder 21 works, the frame 1 can be driven to move in the vertical direction of the guide rod 2, and the guide rod 2 can be provided with a plurality of guide rods according to actual needs. The screen printing plate 7 comprises a plurality of different specifications, and the screen printing plate 7 can be detachably connected with the frame 1 through bolts.
The frame 1 is connected with a sliding plate 4 which moves horizontally in a sliding mode, the sliding plate 4 is connected with a first air cylinder 5, the first air cylinder 5 is connected with the frame 1, and the sliding plate 4 is connected with a first scraper 11 and a second scraper 13 which are arranged in the vertical direction in a sliding mode. The frame 1 is fixedly connected with a plurality of guide rails 8 arranged in the horizontal direction, the number of the guide rails 8 can be two, and the two guide rails 8 are parallel to each other. The guide rail 8 is connected with a sliding block 9 in a sliding mode, the sliding block 9 is fixedly connected with the bottom end of the sliding plate 4, and when the first air cylinder 5 works, the sliding plate 4 can be driven to move along the length direction of the guide rail 8.
Wherein, actuating mechanism is used for driving first gear 14 and rotates, and two slide openings have been seted up to sliding plate 4, and first scraper blade 11 and second scraper blade 13 slide respectively and set up in two slide openings, and just first scraper blade 11 and second scraper blade 13 all with slide opening sliding connection, first scraper blade 11 and second scraper blade 13 all run through the slide opening. Therefore, when the first cylinder 5 drives the sliding plate 4 to move horizontally, the first scraper 11 and the second scraper 13 can be driven to move horizontally at the same time.
The upper end of the sliding plate 4 is fixedly connected with a water tank 15, the second scraper 13 is fixedly connected with a peristaltic pump 17, and the peristaltic pump 17 is connected with a water pipe 16; one end of the water pipe 16 is connected with a plurality of spraying pipes 19, the other end of the water pipe 16 is communicated with the water tank 15, and the spraying pipes 19 are connected with the second scraper 13.
The frame 1 is fixedly connected with a first rack 6 arranged in the horizontal direction, the peristaltic pump 17 comprises a power shaft, a second gear 18 is fixedly sleeved on the power shaft, and the second gear 18 is arranged right above the first rack 6.
The spraying pipes 19 are provided with two spraying pipes and are symmetrically arranged on two sides of the second scraper 13, the peristaltic pump 17 is not required to be connected with an additional motor, and after the second gear 18 is meshed with the first rack 6, the second gear 18 rotates to drive the peristaltic pump 17 to work simultaneously, so that spraying is carried out, and slurry is wetted. Normally, the peristaltic pump is driven by a motor, and the motor is replaced by the rotation of the second gear 18, so that no additional power source is needed, and the opening and closing of the peristaltic pump 17 are conveniently controlled.
The driving mechanism comprises a third gear 26, the frame body 3 is connected with a second bracket 22 in a sliding manner, the second bracket 22 is fixedly connected with the first bracket 20, the third gear 26 is connected with the second bracket 22 in a rotating manner, and the third gear 26 is connected with the first gear 14 through a connecting rod; the upper end of the sliding plate 4 is fixedly connected with a fourth rack 25 which is arranged in the vertical direction, the fourth rack 25 is meshed with a third gear 26, and the first bracket 20 is rotatably connected with the first gear 14.
When the frame 1 drives the sliding plate 4 to move vertically, the fourth rack 25 can drive the third gear 26 to rotate, and then drive the first gear 14 to rotate through the connecting rod. Since the first gear 14 is disposed between the second rack 10 and the third rack 13, when the first scraper 11 and the second scraper 13 move horizontally, the first gear 14 is driven to move horizontally, and further the first bracket 20 is driven to move simultaneously, and the second bracket 22 is driven to move simultaneously, at this time, the second bracket 22 and the sliding plate 4 move identically, so that the third gear 26 and the fourth rack 25 are always in an engaged state.
The moving speed of the first squeegee 11 is greater than the moving speed of the frame 1. When the first scraper 11 contacts with the screen 7, the second gear 18 is disengaged from the first rack 6, and in an initial state, the second scraper 13 contacts with the screen 7, the second gear 18 is engaged with the first rack 6, a gap is left between the first scraper 11 and the screen 7, and the sum of the length of the gap and the moving length of the frame 1 is equal to the arc length of the rotation of the first gear 14.
Therefore, when first scraper blade 11 prints, peristaltic pump 17 can not work this moment, and only when second scraper blade 13 and half tone 7 contact, second gear 18 just can with the meshing of first rack 6, just can drive peristaltic pump 17 work to the realization is to the control of peristaltic pump 17 work, is convenient for spray the going on of work to thick liquids, can in time humidify thick liquids at the printing in-process, prevents that thick liquids mummification from blockking up half tone 7, thereby effectively improves the quality and the efficiency of printing.
In addition, in the initial state, since a gap is left between the first squeegee 11 and the screen plate 7 and both the first squeegee 11 and the frame 1 move downward, if the first squeegee 11 and the screen plate 7 are to be brought into contact with each other, the moving speed of the first squeegee 11 needs to be higher than the moving speed of the frame 1. In practical operation, a gear with a proper size can be selected to adjust the moving speed of the first squeegee 11, and the frame 1 drives the first squeegee 11 to move downward through the transmission of the gear, so that the first squeegee 11 and the screen 7 are just in contact after the frame 1 moves downward by a specified length.
The invention also provides a using method of the screen printing machine for producing the solar cell, and the screen printing machine for producing the solar cell comprises the following steps:
s1: pouring the slurry into the frame 1, then placing the solar cell below the screen printing plate 7, starting the second air cylinder 21, and driving the frame 1 and the sliding plate 4 to move downwards by a specified distance by the second air cylinder 21;
s2: the sliding plate 4 drives the fourth rack 25 to descend, the fourth rack 25 drives the third gear 26 to rotate, the third gear 26 drives the first gear 14 to rotate, the first gear 14 drives the first scraper 11 to move downwards, so that the first scraper 11 is in contact with the screen printing plate 7, and simultaneously drives the second scraper 13 to move upwards, and at the moment, the second gear 18 is disengaged from the first rack 6;
s3: the first air cylinder 5 works to drive the sliding plate 4 to slide along the screen printing plate 7, under the action of the first scraper blade 11, slurry is printed on the solar cell through the screen printing plate 7, and printing work is finished, in the process, the first scraper blade 11 and the second scraper blade 13 drive the first support 20 and the second support 22 to move in the horizontal direction, then the first air cylinder 5 stops working, the second air cylinder 21 works to drive the frame 1 and the sliding plate 4 to reset;
s4: the sliding plate 4 drives the first gear 14 to rotate, so that the first scraper 11 moves upwards, the second scraper 13 moves downwards, the second scraper 13 is in contact with the screen 7, and the second gear 18 is meshed with the first rack 6;
s5: and then the first air cylinder 5 works to drive the sliding plate 4 to move along the screen printing plate 7, so that the sliding plate 4 is reset, the second scraper 13 drives the slurry to be pushed to the initial position to wait for next printing, meanwhile, under the action of the first rack 6, the second gear 18 rotates, the second gear 18 drives the peristaltic pump 17 to work, and water in the water tank 15 is sprayed onto the slurry through the spraying pipe 19 through the water pipe 16, so that the slurry is wet.
It should be noted that, when the first gear 14 rotates, the first scraper 11 and the second scraper 13 can be driven to move simultaneously, and the moving directions of the first scraper 11 and the second scraper 13 are opposite, when the first cylinder 5 drives the first scraper 11 to move in the horizontal direction, the first scraper 11 and the screen 7 are matched, so that the slurry can complete the printing work through the screen 7, and when the first cylinder 5 drives the second scraper 13 to move in the horizontal direction, the second scraper 13 can stack the slurry into one block, so as to facilitate the next printing work, and through the staggered movement of the first scraper 11 and the second scraper 13, the slurry can be stirred to a certain extent, so as to facilitate the printing work.
In addition, a power shaft of the peristaltic pump 17 is connected with a second gear 18, when the second scraper 13 moves, under the action of the first rack 6, the second gear 18 can be driven to work, and then the peristaltic pump 17 is driven to work, so that spraying is performed, the slurry is moistened, no additional power source is needed, when the first scraper 11 performs printing, at this time, the peristaltic pump 17 cannot work, and only when the second scraper 13 contacts the screen printing plate 7, the second gear 18 can be meshed with the first rack 6 to drive the peristaltic pump 17 to work, so that control over the work of the peristaltic pump 17 is realized, the slurry spraying work is facilitated, the slurry can be humidified in time in the printing process, the screen printing plate 7 is prevented from being blocked by the slurry, and the quality and the efficiency of drying printing are effectively improved.
Example two
Referring to fig. 1 to 5, the other structures are the same as those of the first embodiment except that the problem of movement of the first squeegee 11 and the second squeegee 13 is considered in this embodiment.
The driving mechanism comprises a third gear 26, the frame body 3 is connected with the second bracket 22 in a sliding way, and the third gear 26 is rotationally connected with the second bracket 22; the upper end of the sliding plate 4 is fixedly connected with a fourth rack 25 which is arranged in the vertical direction, and the fourth rack 25 is meshed with a third gear 26.
The first bracket 20 is provided with a sliding groove 27 arranged in the vertical direction, a sliding block is arranged in the sliding groove 27 in a sliding manner, the sliding block is rotatably connected with a rotating shaft, and the first gear 14 is fixedly sleeved on the rotating shaft; the third gear 26 is connected with a spline telescopic shaft 24 through a universal coupling 23, and the other end of the spline telescopic shaft 24 is connected with the rotating shaft.
When the first scraper 11 is contacted with the screen 7, the second gear 18 is disengaged from the first rack 6; in the initial state, the second scraper 13 contacts the screen 7, the second gear 18 is engaged with the first rack 6, a gap is left between the first scraper 11 and the screen 7, and the arc length of the first gear 14 is equal to or greater than the length of the gap.
In practical use, since solar cells having different thicknesses are printed, the distance of vertical movement of the frame 1 needs to be adjusted. In this example, the sliding groove 27 is formed in the first support 20, and in practical use, only the arc length of the rotation of the first gear 14 is greater than or equal to the length of the gap between the first scraper 11 and the screen 7 in the initial state, when the frame 1 moves downward by an excessive distance, at this time, the first scraper 11 cannot continue to move downward, and the first scraper 11 further drives the first gear 14 to move in the sliding groove 27 in the vertical direction.
Compared with the first embodiment, in the first embodiment, a larger gear is required to make the movement speed of the first squeegee 11 faster than that of the frame 1, and the movement distance of the frame 1 is always kept constant, and the movement of the first squeegee 11 needs to meet the condition that the sum of the length of the gap between the first squeegee 11 and the screen 7 and the length of the movement of the frame 1 is equal to the arc length of the rotation of the first gear 14, so that the first squeegee 11 can be moved right to be in contact with the screen 7.
In this application, need not to select for use great gear to increase the translation rate of first scraper blade 11, and do not have the requirement to the translation rate of first scraper blade 11, only need first gear 14 the arc length of rotating be greater than or equal to under the initial condition first scraper blade 11 and half tone 7 between the clearance can, consequently overall structure is compacter, and it is more convenient to operate, and the displacement of frame 1 is for changeing.
When the structure described in this example is adopted, in the above S2, when the first gear 14 drives the first scraper 11 to move downward, if the initial state of the slide block is located at the bottom end of the chute 27, and the arc length of the rotation of the first gear 14 is greater than the sum of the gap between the first scraper 11 and the screen plate 7 and the length of the movement of the frame 1, the first gear 14 drives the rotating shaft to slide upward in the chute 27, at this time, the spline telescopic shaft 24 is lengthened, and at the same time, the spline telescopic shaft 24 rotates around the universal coupling 23, and under the action of the universal coupling 23, the third gear 26 rotates to still drive the first gear 14 to rotate.
Therefore, considering the distance that the frame 1 is lowered, which is sometimes required to be controlled, by forming the slide groove 27 in the first bracket 20, the first gear 14 can be moved in the vertical direction in the slide groove 27, thus, as the distance of downward movement of the frame 1 increases, the greater the arc length through which the first gear 14 rotates, the greater the distance the first scraper 13 moves, after the first scraper 13 contacts the screen 7, the first scraper 11 cannot move downwards continuously with the continuous rotation of the first gear 14, so that the first gear 14 is driven to move upwards in the chute 27, under the action of the spline telescopic shaft 24 and the universal joint 23, the rotation of the third gear 26 can still drive the first gear 14 to rotate, and meanwhile, the movement of the first scraper 11 and the second scraper 13 can not be influenced, thereby being beneficial to controlling the descending distance of the frame 1 and facilitating the printing work, thereby improving the application range of the device.
In addition, due to the existence of the sliding chute 27, in the initial state, the slide block can be located at a suitable position of the sliding chute 27, specifically, the length from the slide block to the sliding chute 27 is equal to the initial set moving distance of the frame 1, and the moving speeds of the first scraper 11 and the frame 1 are the same, at this time, the minimum value of the arc length of the rotation of the first gear 14 is the length of the gap between the first scraper 11 and the screen 7 in the initial state.
When the arrangement is adopted, in the first embodiment, since the length of the first scraper 11 is far longer than the length of the first scraper 11 in the present embodiment, and the lengths of the second scraper 13 and the first scraper 11 are the same and opposite, the second scraper 13 is driven to move upwards for a long time, the peristaltic pump 17 and the water pipe 16 are driven to move upwards for a long time, which is obviously inconvenient, unfavorable for the stability of the whole device, and easy for the water pipe 16 to wind.
In this embodiment, when the first squeegee 11 contacts the screen 7, the distance from the second squeegee 13 to the screen 7 is equal to the length of the gap between the first squeegee 11 and the screen 7 in the initial state, so that the distance over which the second squeegee 13 moves is shorter, the water pipes 16 are less likely to be entangled, and the stability of the entire apparatus is better.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A screen printing machine capable of being used for producing solar cells comprises a frame body (3) and is characterized in that the frame body (3) is fixedly connected with a second air cylinder (21) arranged in the vertical direction, the bottom end of the second air cylinder (21) is connected with a frame (1), and the frame (1) is detachably connected with a screen printing plate (7); the frame (1) is connected with a sliding plate (4) in a sliding mode, the sliding plate (4) is connected with a first air cylinder (5), the first air cylinder (5) is connected with the frame (1), and the sliding plate (4) is connected with a first scraper blade (11) and a second scraper blade (13) which are both arranged in the vertical direction in a sliding mode; first scraper blade (11) are connected with second rack (10), second scraper blade (13) are connected with third rack (12), support body (3) sliding connection has first support (20), first support (20) are connected with rotatable first gear (14), first gear (14) both ends mesh with second rack (10) and third rack (12) respectively mutually, first gear (14) are connected with actuating mechanism.
2. The screen printing machine for producing solar cells according to claim 1, wherein a water tank (15) is fixedly connected to the upper end of the sliding plate (4), a peristaltic pump (17) is fixedly connected to the second scraper (13), and a water pipe (16) is connected to the peristaltic pump (17); one end of the water pipe (16) is connected with a plurality of spraying pipes (19), the other end of the water pipe (16) is communicated with the water tank (15), and the spraying pipes (19) are connected with the second scraper (13).
3. The screen printing machine for producing solar cells according to claim 2, wherein a first rack (6) horizontally arranged is fixedly connected to the frame (1), the peristaltic pump (17) comprises a power shaft, a second gear (18) is fixedly sleeved on the power shaft, and the second gear (18) is arranged right above the first rack (6).
4. The screen printing machine for producing solar cells according to claim 3, wherein the driving mechanism comprises a third gear (26), a second bracket (22) is slidably connected to the frame body (3), the second bracket (22) is fixedly connected to the first bracket (20), the third gear (26) is rotatably connected to the second bracket (22), and the third gear (26) is connected to the first gear (14); the upper end of the sliding plate (4) is fixedly connected with a fourth rack (25) which is arranged in the vertical direction, the fourth rack (25) is meshed with the third gear (26), and the first bracket (20) is rotatably connected with the first gear (14).
5. The screen printing machine for producing solar cells is characterized in that the moving speed of the first scraper (11) is greater than the moving speed of the frame (1), when the first scraper (11) contacts with the screen (7), the second gear (18) is disengaged from the first rack (6), in the initial state, the second scraper (13) contacts with the screen (7), the second gear (18) is engaged with the first rack (6), a gap is left between the first scraper (11) and the screen (7), and the sum of the length of the gap and the moving length of the frame (1) is equal to the arc length rotated by the first gear (14).
6. The screen printing machine for producing solar cells according to claim 3, wherein the driving mechanism comprises a third gear (26), the frame body (3) is connected with a second bracket (22) in a sliding manner, and the third gear (26) is connected with the second bracket (22) in a rotating manner; the upper end of the sliding plate (4) is fixedly connected with a fourth rack (25) which is arranged in the vertical direction, and the fourth rack (25) is meshed with the third gear (26).
7. The screen printing machine for producing solar cells according to claim 6, wherein the first bracket (20) is provided with a sliding groove (27) arranged in the vertical direction, a sliding block is arranged in the sliding groove (27) in a sliding manner, the sliding block is rotatably connected with a rotating shaft, and the first gear (14) is fixedly sleeved on the rotating shaft; the third gear (26) is connected with a spline telescopic shaft (24) through a universal coupling (23), and the other end of the spline telescopic shaft (24) is connected with the rotating shaft.
8. The screen printing machine for producing solar cells as claimed in claim 7, wherein the second gear (18) is disengaged from the first rack (6) when the first squeegee (11) is in contact with the screen (7); in an initial state, the second scraper (13) is contacted with the screen (7), the second gear (18) is meshed with the first rack (6), a gap is reserved between the first scraper (11) and the screen (7), and the arc length of the first gear (14) is equal to or larger than the length of the gap.
9. Use method of a screen printing machine for producing solar cells, characterized in that the screen printing machine for producing solar cells of claim 5 is adopted, and comprises the following steps:
s1: pouring the slurry into the frame (1), then placing the solar cell below the screen printing plate (7), starting the second air cylinder (21), and driving the frame (1) and the sliding plate (4) to move downwards for a specified distance by the second air cylinder (21);
s2: the sliding plate (4) drives the fourth rack (25) to descend, the fourth rack (25) drives the third gear (26) to rotate, the third gear (26) drives the first gear (14) to rotate, the first gear (14) drives the first scraper (11) to move downwards, the first scraper (11) is made to be in contact with the screen printing plate (7), meanwhile, the second scraper (13) is driven to move upwards, and at the moment, the second gear (18) is disengaged from the first rack (6);
s3: the first air cylinder (5) works to drive the sliding plate (4) to slide along the screen printing plate (7), under the action of the first scraper (11), slurry is printed on the solar cell through the screen printing plate (7), and printing work is completed, in the process, the first scraper (11) and the second scraper (13) drive the first support (20) and the second support (22) to move in the horizontal direction, then the first air cylinder (5) stops working, the second air cylinder (21) works to drive the frame (1) and the sliding plate (4) to reset;
s4: the sliding plate (4) drives the first gear (14) to rotate, so that the first scraper (11) moves upwards, the second scraper (13) moves downwards, the second scraper (13) is in contact with the screen (7), and the second gear (18) is meshed with the first rack (6);
s5: and then the first air cylinder (5) works to drive the sliding plate (4) to move along the screen printing plate (7) so as to reset the sliding plate (4), the second scraper (13) drives the slurry to be pushed to the initial position to wait for next printing, meanwhile, under the action of the first rack (6), the second gear (18) rotates, the second gear (18) drives the peristaltic pump (17) to work, and water in the water tank (15) is sprayed onto the slurry through the spray pipe (19) through the water pipe (16) so as to wet the slurry.
10. The method of claim 9, wherein when the screen printing machine for producing solar cells is used, in step S2, when the first scraper (11) is driven by the first gear (14) to move downward, if the initial state of the slider is located at the bottom end of the chute (27), and the arc length of the rotation of the first gear (14) is greater than the sum of the gap between the first scraper (11) and the screen printing plate (7) and the length of the movement of the frame (1), the first gear (14) drives the rotating shaft to slide upward in the chute (27), and at this time, the spline telescopic shaft (24) is lengthened, and at the same time, the spline telescopic shaft (24) rotates around the universal coupling (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211009311.5A CN115071254A (en) | 2022-08-23 | 2022-08-23 | Screen printing machine for producing solar cell and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211009311.5A CN115071254A (en) | 2022-08-23 | 2022-08-23 | Screen printing machine for producing solar cell and using method thereof |
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| CN115071254A true CN115071254A (en) | 2022-09-20 |
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| CN202211009311.5A Pending CN115071254A (en) | 2022-08-23 | 2022-08-23 | Screen printing machine for producing solar cell and using method thereof |
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Application publication date: 20220920 |