Automatic screen printing plate cleaning device suitable for solar cell

Abstract

The utility model relates to the technical field of automatic cleaning, in particular to an automatic screen cleaning device suitable for solar cells, which comprises a blowing transverse pipe, a spraying transverse pipe, a water tank and a movable lifting unit. The movable lifting unit drives a spraying transverse pipe and an air blowing transverse pipe to get close to the screen printing plate and move from the upper portion of the vertical screen printing plate to the lower portion of the vertical screen printing plate; a water pump on a water tank filled with a cleaning solvent conveys the cleaning solvent into a spraying transverse pipe below, and then the spraying transverse pipe sprays the cleaning solvent to the surface of the screen printing plate for cleaning; a water pump on a water tank filled with pure water conveys the pure water into a spraying transverse pipe above, and then the spraying transverse pipe sprays the pure water to the surface of the screen printing plate to wash the residual cleaning solvent; the air pump conveys high-pressure air into the air blowing transverse pipe, the air blowing transverse pipe blows out high-pressure air flow downwards in an inclined mode towards the screen printing plate, and water stains on the surface of the screen printing plate are blown away for drying. Therefore, automatic cleaning of the screen printing plate is achieved, and the cleaning quality and efficiency of the screen printing plate are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic cleaning technical field, concretely is a kind of automatic cleaning screen printing plate device suitable for solar cell. BACKGROUND

[0002] Solar cell is a kind of semiconductor device that can convert solar energy into electric energy, and photogenerated current is generated inside solar cell under light conditions, and electric energy is output through electrode. The project of developing high-efficiency battery has received more and more attention, especially silicon-based heterojunction solar cell; because of short manufacturing process, low preparation process temperature, and at the same time, high conversion efficiency, high open-circuit voltage, low temperature coefficient, no light-induced attenuation, no electric-induced attenuation, suitable for using thin silicon wafer to make bendable battery assembly, more power generation, etc. Advantages, silicon-based heterojunction solar cell becomes a kind of solar cell with great potential.

[0003] The existing heterojunction solar cell preparation process includes etching cleaning, amorphous silicon deposition, TCO deposition and screen printing. In the production process, new screen printing plate needs to be replaced and verified, and the replaced screen printing plate needs to be cleaned, because the screen printing plate needs to be verified frequently, the screen printing plate is abnormal, the service life is expired, or affected by other factors.

[0004] Traditional screen printing plate cleaning mainly relies on manual cleaning of screen printing plate by cleaning solvent to achieve the purpose of screen printing plate cleaning. However, in the traditional cleaning method, the residual paste in the screen printing plate is removed by manual cleaning when the screen printing plate is offline. This method is slow in cleaning the screen printing plate, and the screen printing plate is not cleaned completely, which affects the reuse of the screen printing plate.

[0005] Therefore, an automatic screen printing plate cleaning device suitable for solar cell is proposed to solve the above problems. UTILITY MODEL CONTENT

[0006] In order to make up for the shortcomings of prior art and solve at least one technical problem in the background art.

[0007] The utility model discloses a kind of automatic cleaning screen plate devices suitable for solar cell, including bottom plate;The top surface side of the bottom plate is provided with fixed mechanism, and the fixed mechanism is used to fix screen plate;The top surface other side of the bottom plate is provided with cleaning mechanism, and the cleaning mechanism is used to clean screen plate;The cleaning mechanism includes setting in the moving lifting unit of bottom plate top surface;The side of the moving lifting unit close to the fixed mechanism is provided with blowing cross pipe;The air outlet of the blowing cross pipe is inclined downward;The blowing cross pipe is connected by pipeline with air pump;Two spray cross pipes are further provided below the blowing cross pipe;Two water tanks are fixedly connected on the top surface of the bottom plate away from the fixed mechanism;The inside of two water tanks is respectively equipped with pure water and cleaning solvent;Water pump is provided on the side of the water tank;One of the spray cross pipes at the top is communicated with the water pump of the water tank equipped with pure water by pipeline;One of the spray cross pipes at the bottom is communicated with the water pump of the water tank equipped with cleaning solvent by pipeline.

[0008] Preferably, the moving lifting unit includes electric slide rail fixedly connected to the top surface of the bottom plate on both sides; the top surface of the sliding block of the two electric slide rails is fixedly connected with a cross beam; the top surface of the cross beam is fixedly connected with a vertical beam in the middle; a lead screw is rotatably installed in the middle of the inner cavity of the vertical beam; guide rods are fixedly connected to both sides of the inner cavity of the vertical beam; a lifting seat is slidably installed in the inner cavity of the vertical beam; the lead screw is threadedly connected with the lifting seat; the lifting seat is slidably connected with the guide rods; a face gear is fixedly connected to the bottom outer ring of the lead screw; a driving motor is fixedly connected to the top surface of the cross beam; the output shaft of the driving motor penetrates through the side wall of the vertical beam; the output shaft of the driving motor is fixedly connected with a gear; the gear is engaged with the face gear; a mounting bracket is fixedly connected to the side of the lifting seat close to the fixed mechanism; the blowing cross pipe and the two spray cross pipes are bolted to the mounting bracket.

[0009] Preferably, the spray cross pipe is internally provided with a water passage away from the fixed mechanism; one end of the water passage is communicated with the water pump of the water tank through a water pipe; a connecting cavity is formed in the middle of the spray cross pipe; a plurality of through grooves are uniformly formed on both sides between the water passage and the connecting cavity; a receiving groove is formed in the middle of the side of the spray cross pipe close to the fixed mechanism; spray grooves are formed on both sides of the receiving groove; the spray grooves are communicated with the connecting cavity through a plurality of connecting grooves; a velvet brush is arranged in the receiving groove.

[0010] Preferably, the top surface of the receiving groove is rotatably provided with a plurality of rotating rods; the top end of the rotating rod extends into the interior of the connecting cavity; the outer circle of the top of the rotating rod is fixedly connected with an impeller; the impeller is located in the interior of the connecting cavity; the bottom end of the rotating rod is fixedly connected with a sliding cylinder; the interior of the sliding cylinder is slidably provided with a sliding rod; the top end of the sliding rod and the interior top end of the sliding cylinder are fixedly connected with a first spring; the lint brush is installed at the bottom end of the sliding rod.

[0011] Preferably, the bottom end of the sliding rod is fixedly connected with a mounting plate; the bottom surface of the mounting plate and the lint brush are attached by magic tape.

[0012] Preferably, the through grooves are located on both sides of the impeller; the through grooves are obliquely provided, and the oblique directions of the through grooves on both sides are opposite; the oblique directions of the through grooves on the same side are the same.

[0013] Preferably, the bottom side of the spraying groove is fixedly connected with an inclined flow guide plate.

[0014] Preferably, the fixing mechanism comprises two vertical columns fixedly connected to the top surface of the bottom plate; the top of the two vertical columns is rotatably provided with a rotating shaft; the middle of the rotating shaft is fixedly connected with a supporting plate; the screen printing plate is placed on the top surface of the supporting plate; the bottom surface of the screen printing plate is fixedly connected with a right-angle plate at the four corners; the bottom surface of the supporting plate is fixedly connected with a guide cylinder at the four corners; the guide cylinder is slidably provided with a push rod in the interior; the end of the push rod away from the supporting plate is fixedly connected with a triangular push block; the triangular push block can be in extrusion contact with the right-angle plate of the screen printing plate on the ground; the end of the push rod close to the supporting plate and the interior of the guide cylinder are fixedly connected with a second spring.

[0015] Preferably, the middle part of the bottom surface of the guide cylinder away from the supporting plate is provided with a sliding groove; the end of the push rod close to the interior of the guide cylinder is fixedly connected with a protrusion on the outside, and the protrusion is in sliding cooperation with the sliding groove; the middle part of the protrusion of the push rod is rotatably provided with a fixed clamping plate; the end of the guide cylinder close to the middle part of the supporting plate and located on both sides of the sliding groove is fixedly connected with a clamping block; the fixed clamping plate can be blocked by the clamping block.

[0016] Preferably, one side of the two vertical columns close to the supporting plate is fixedly connected with a concave positioning seat; the two protrusions of the concave positioning seat are semicylindrical; the outer circles of the two ends of the rotating shaft are fixedly connected with positioning units; one of the positioning units is fixedly installed vertically downward, and the other positioning unit is fixedly installed horizontally towards the cleaning mechanism; the positioning unit comprises a fixed shell fixedly installed on the outer circle of the rotating shaft; the interior of the fixed shell is slidably provided with a sliding seat; the side of the sliding seat away from the vertical column and the inner wall of the fixed shell are fixedly connected with a third spring; the sliding seat is fixedly connected with a clamping column; the clamping column can be clamped with the concave positioning seat.

[0017] The utility model discloses the beneficial effect lies in:

[0018] 1. The utility model relates to an automatic cleaning screen plate device suitable for solar cell, be provided with blow -off cross -pipe, spray cross -pipe, water tank and remove lifting unit through setting, remove lifting unit drives spray cross -pipe and blow -off cross -pipe to draw close to screen plate, and remove from the top of vertical screen plate to below, the water pump on the water tank with cleaning solvent sends cleaning solvent to below one spray cross -pipe, and then the spray cross -pipe sprays cleaning solvent to the surface of screen plate and washes, the water pump on the water tank with pure water sends pure water to above one spray cross -pipe, and then the spray cross -pipe sprays pure water to the surface of screen plate and washes residual cleaning solvent, and the gas pump sends high pressure gas to blow -off cross -pipe, and the blow -off cross -pipe blows out high pressure airflow to screen plate and leans down, and the water mark on the surface of screen plate is blown and dries, thereby realize the automatic cleaning of screen plate, improve the quality and efficiency of screen plate cleaning.

[0019] 2. The utility model discloses an automatic cleaning screen plate device suitable for solar cell, be provided with rotating rod, impeller, slide cylinder, slide cylinder and no. The water or cleaning solvent enters the connecting chamber after being through the through groove, and then passes through the impeller, drives the rotation of impeller, drives the rotation of rotating rod, drives the rotation of slide cylinder, drives the rotation of slide rod, and drives the rotation of velvet brush, so that the velvet brush rotates and wipes screen plate, thereby improving the wiping effect of screen plate, and the elasticity of no. The spring pushes slide rod and slides out from the inside of slide cylinder, and pushes the velvet brush and extrudes screen plate, thereby further improving the wiping effect of screen plate. ACCURACY

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0021] Figure 1 It is the perspective view of the utility model;

[0022] Figure 2 It is the perspective view of the utility model in remove lifting unit;

[0023] Figure 3 It is the perspective view of the utility model in spray cross -pipe;

[0024] Figure 4 It is the sectional view of the utility model in spray cross -pipe;

[0025] Figure 5 It is the internal structure diagram of the utility model in spray cross -pipe;

[0026] Figure 6 is a perspective view of the transfer rod in the utility model;

[0027] Figure 7 is an exploded view of the transfer rod in the utility model;

[0028] Figure 8 is a bottom structure view of the screen in the utility model;

[0029] Figure 9 is a perspective view of the fixing mechanism in the utility model;

[0030] Figure 10 is a perspective view of the guide cylinder in the utility model;

[0031] Figure 11 is a perspective view of the positioning unit in the utility model;

[0032] Figure 12 is an exploded view of the positioning unit in the utility model.

[0033] In the figure: 1, bottom plate; 2, screen; 3, blow horizontal pipe; 4, spray horizontal pipe; 5, water tank; 6, electric slide rail; 7, cross beam; 8, vertical beam; 9, screw rod; 10, lifting seat; 11, face gear; 12, driving motor; 13, gear; 14, mounting support; 15, water cavity; 16, connecting cavity; 17, through groove; 18, storage groove; 19, spray groove; 20, fluff brush; 21, transfer rod; 22, impeller; 23, slide cylinder; 24, slide rod; 25, No. 1 spring; 26, mounting plate; 27, inclined guide plate; 28, stand column; 29, rotating shaft; 30, supporting plate; 31, guide cylinder; 32, push rod; 33, triangular push block; 34, fixed clamping plate; 35, clamping block; 36, concave positioning seat; 37, fixed shell; 38, slide seat; 39, No. 3 spring; 40, clamping column. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] For example, Figure 1As shown, an automatic cleaning screen device suitable for solar cells includes a base plate 1; the top surface of the base plate 1 is provided with a fixing mechanism, and the fixing mechanism is used to fix the screen 2; the other side of the top surface of the base plate 1 is provided with a cleaning mechanism, and the cleaning mechanism is used to clean the screen 2; the cleaning mechanism includes a moving lifting unit arranged on the top surface of the base plate 1; the moving lifting unit is provided with a blowing horizontal pipe 3 on the side close to the fixing mechanism; the air outlet of the blowing horizontal pipe 3 is inclined downward; the blowing horizontal pipe 3 is connected with an air pump through a pipeline; two spraying horizontal pipes 4 are further arranged below the blowing horizontal pipe 3; two water tanks 5 are fixedly connected to the top surface of the base plate 1 away from the fixing mechanism; pure water and cleaning solvent are respectively arranged in the two water tanks 5; a water pump is arranged on the side of the water tank 5; one of the spraying horizontal pipes 4 at the top is communicated with the water pump of the water tank 5 containing pure water through a pipeline; one of the spraying horizontal pipes 4 at the bottom is communicated with the water pump of the water tank 5 containing cleaning solvent through a pipeline;

[0036] The conventional cleaning method of the screen by manually wiping the screen with cleaning solvent has the problems of slow cleaning speed of the screen, incomplete cleaning of the screen, and influence on repeated use of the screen; therefore, the embodiment provides an automatic cleaning screen device suitable for solar cells;

[0037] The cleaning solvent in the embodiment includes organic solvents (ethylene glycol monomethyl acetate, DBE environmentally friendly solvent, low-toxicity alcohol isopropyl alcohol, etc.), alkaline solution, and environmentally friendly water-based cleaning agent, which can achieve the cleaning effect of the screen through different proportions;

[0038] When working, after the screen 2 is offline, the screen 2 is placed on the fixing mechanism, the screen 2 is fixed by the fixing mechanism and the hand, the screen 2 is kept in a vertical state, and the front surface of the screen 2 faces the cleaning mechanism; the moving lifting unit drives the spraying horizontal pipe 4 and the blowing horizontal pipe 3 to approach the screen 2, and moves from above to below of the vertical screen 2; in the moving process, the water pump on the water tank 5 containing cleaning solvent delivers the cleaning solvent into one of the spraying horizontal pipes 4 below, and then the spraying horizontal pipe 4 sprays the cleaning solvent to the surface of the screen 2 for cleaning; then, the water pump on the water tank 5 containing pure water delivers the pure water into one of the spraying horizontal pipes 4 above, and then the spraying horizontal pipe 4 sprays the pure water to the surface of the screen 2 to flush the residual cleaning solvent; finally, the air pump delivers high-pressure gas into the blowing horizontal pipe 3, and the blowing horizontal pipe 3 blows the high-pressure gas flow obliquely downward to the screen 2, to blow off the water stains on the surface of the screen 2 for drying; thereby, the automatic cleaning of the screen 2 is realized, and the quality and efficiency of the cleaning of the screen 2 are improved.

[0039] As shown in the drawings, Figures 1-2As shown, the mobile lifting unit comprises electric sliding rails 6 fixed on both sides of the top surface of the bottom plate 1; the top surface of the sliding block of the two electric sliding rails 6 is fixed with a cross beam 7; the top surface of the middle part of the cross beam 7 is fixed with a vertical beam 8; the inner cavity of the vertical beam 8 is rotatably installed with a lead screw 9; the inner cavity of the vertical beam 8 is fixed with a guide rod on both sides; the inner cavity of the vertical beam 8 is slidably installed with a lifting seat 10; the lead screw 9 is threadedly matched with the lifting seat 10; the lifting seat 10 is slidably matched with the guide rod; the bottom outer ring of the lead screw 9 is fixed with a face gear 11; the top surface of the cross beam 7 is fixed with a driving motor 12; the output shaft of the driving motor 12 is rotatably penetrated through the side wall of the vertical beam 8; the output shaft of the driving motor 12 is fixed with a gear 13; the gear 13 is engaged with the face gear 11; the side of the lifting seat 10 close to the fixing mechanism is fixed with a mounting bracket 14; the blowing cross pipe 3 and the two spraying cross pipes 4 are bolted with the mounting bracket 14.

[0040] During operation, the screen plate 2 is fixedly placed in front of the fixing mechanism, the cross beam 7 and the vertical beam 8 are driven away from the fixing mechanism by the sliding block on the electric sliding rail 6, so that the blowing cross pipe 3 and the spraying cross pipe 4 are away from the fixing mechanism, thereby avoiding the influence of the blowing cross pipe 3 and the spraying cross pipe 4 on the fixed placement of the screen plate 2.

[0041] After the fixing mechanism fixes the screen plate 2 and keeps the screen plate 2 in a vertical state, the cross beam 7 and the vertical beam 8 are driven to approach the fixing mechanism by the sliding block on the electric sliding rail 6, so that the blowing cross pipe 3 and the spraying cross pipe 4 approach the screen plate 2 in a vertical state, thereby controlling and adjusting the distance between the blowing cross pipe 3, the spraying cross pipe 4 and the screen plate 2, and then ensuring the cleaning effect on the screen plate 2.

[0042] During cleaning of the screen plate 2, at this time, the lifting seat 10 is located at the top of the vertical beam 8, that is, the blowing cross pipe 3 and the spraying cross pipe 4 are located above the vertical screen plate 2; the driving motor 12 drives the gear 13 to rotate, drives the face gear 11 to rotate, drives the lead screw 9 to rotate, drives the lifting seat 10 to move downward along the guide rod in the vertical beam 8, drives the blowing cross pipe 3 and the spraying cross pipe 4 to move downward at a constant speed, and realizes the cleaning work from top to bottom on the vertical screen plate 2, thereby facilitating the cleaning of impurities on the screen plate 2, reducing the residue of cleaning solvent and pure water, and improving the cleaning quality of the screen plate 2.

[0043] As shown in the drawings, Figures 3-5As shown, the spray horizontal pipe 4 is internally provided with a water passing cavity 15 on the side away from the fixing mechanism; one end of the water passing cavity 15 is communicated with the water pump of the water tank 5 through a water pipe; the middle part of the spray horizontal pipe 4 is provided with a connecting cavity 16; a plurality of through grooves 17 are uniformly provided on both sides between the water passing cavity 15 and the connecting cavity 16; the middle part of the side of the spray horizontal pipe 4 close to the fixing mechanism is provided with a receiving groove 18; spray grooves 19 are provided on both sides of the receiving groove 18; the spray grooves 19 are communicated with the connecting cavity 16 through a plurality of connecting grooves; the inside of the receiving groove 18 is provided with a lint brush 20;

[0044] In operation, when the water pump on the water tank 5 delivers pure water or cleaning solvent into the inside of the spray horizontal pipe 4, the pure water or cleaning solvent first enters the water passing cavity 15, then is shunted by the plurality of through grooves 17 and enters the connecting cavity 16, then enters the spray grooves 19 on both sides through the connecting grooves on both sides, and is sprayed to the surface of the screen plate 2 through the guidance of the spray grooves 19 for cleaning, at the same time, the lint brush 20 arranged in the receiving groove 18 contacts the surface of the screen plate 2 for wiping, thereby further improving the cleaning effect and cleaning efficiency of the screen plate 2.

[0045] As shown in Figures 3-7 the top surface of the receiving groove 18 is rotatably provided with a plurality of rotating rods 21; the top end of the rotating rod 21 extends into the inside of the connecting cavity 16; the top outer circle of the rotating rod 21 is fixedly connected with an impeller 22; the impeller 22 is located in the inside of the connecting cavity 16; the bottom end of the rotating rod 21 is fixedly connected with a sliding cylinder 23; the inside of the sliding cylinder 23 is slidably provided with a sliding rod 24; a first spring 25 is fixedly connected between the top end of the sliding rod 24 and the inside top end of the sliding cylinder 23; the lint brush 20 is arranged at the bottom end of the sliding rod 24;

[0046] In operation, when the pure water or cleaning solvent enters the connecting cavity 16 through the through grooves 17, the pure water or cleaning solvent passes through the impeller 22, drives the impeller 22 to rotate, drives the rotating rod 21 to rotate, drives the sliding cylinder 23 to rotate, drives the sliding rod 24 to rotate, and drives the lint brush 20 to rotate, so that the lint brush 20 rotates to wipe the screen plate 2, thereby improving the wiping effect of the screen plate 2; at the same time, the elastic force of the first spring 25 pushes the sliding rod 24 to slide out of the inside of the sliding cylinder 23, pushes the lint brush 20 to extrude the screen plate 2, thereby further improving the wiping effect of the screen plate 2.

[0047] As shown in Figures 3-7 the bottom end of the sliding rod 24 is fixedly connected with a mounting plate 26; the bottom surface of the mounting plate 26 and the lint brush 20 are attached by magic tape; the mounting plate 26 and the magic tape are arranged to fixedly mount the lint brush 20, thereby facilitating the replacement of the waste lint brush 20.

[0048] As shown in Figures 4-5As shown, the through grooves 17 on both sides are located on both sides of the impeller 22; the through grooves 17 are opened at an angle, and the angles of the through grooves 17 on both sides are opposite; the angles of the through grooves 17 on the same side are the same; by opening the through grooves 17 on both sides at opposite angles, the water flow direction after passing through the through grooves 17 on both sides is opposite, that is, the water flow direction after impacting the impeller 22 is opposite, which effectively drives the rotation of the impeller 22 and improves the rotation power of the impeller 22.

[0049] like Figures 3-5 As shown, an inclined guide plate 27 is fixed to one side of the bottom of the spray tank 19. Through the inclined guide plate 27 on the lower spray tank 19, the pure water and cleaning solvent sprayed in the lower spray tank 19 are sprayed downwards to clean the screen 2, thereby effectively cleaning the loose impurities on the screen 2. The inclined guide plate 27 on the upper spray tank 19 causes the pure water and cleaning solvent sprayed in the upper spray tank 19 to be sprayed downwards, which effectively wets the brush 20, thereby effectively improving the wiping effect of the brush 20.

[0050] like Figure 1 , Figures 8-10 As shown, the fixing mechanism includes columns 28 fixed to both sides of the top surface of the base plate 1; a rotating shaft 29 is rotatably mounted on the top of the two columns 28; a support plate 30 is fixed to the middle of the rotating shaft 29; the screen 2 is placed on the top surface of the support plate 30; right-angle plates are fixed to the four corners of the bottom surface of the screen 2; guide cylinders 31 are fixed to the four corners of the bottom surface of the support plate 30; a push rod 32 is slidably installed inside the guide cylinder 31; a triangular push block 33 is fixed to the end of the push rod 32 away from the support plate 30; the triangular push block 33 can press against the right-angle plates on the ground of the screen 2; a second spring is fixed between the end of the push rod 32 near the support plate 30 and the inner wall of the guide cylinder 31.

[0051] When cleaning the screen 2, rotate the tray 30 to a horizontal position and place the screen 2 on the tray 30. At this time, the elastic force of the second spring pushes the push rod 32 to slide from the inside of the guide cylinder 31, pushing the triangular push block 33 to contact the right-angle plate on the bottom surface of the screen 2. By squeezing the four right-angle plates at the four corners of the screen 2, the screen 2 is fixed and locked. Afterward, rotate the tray 30 to a vertical position, which will drive the screen 2 to a vertical position, thus facilitating cleaning in conjunction with the cleaning mechanism.

[0052] like Figures 8-10As shown, the guide cylinder 31 is away from the middle of the bottom surface of the tray 30 opening a chute; the push rod 32 is close to the outer side of one end of the guide cylinder 31 fixedly connected with a protruding block, and the protruding block is in sliding fit with the chute; the protruding block of the push rod 32 is rotatably installed with a fixed clamping plate 34; the guide cylinder 31 is close to one end of the middle of the tray 30, and is fixedly connected with a clamping block 35 on both sides of the chute; the fixed clamping plate 34 can be blocked by the clamping block 35;

[0053] When the screen plate 2 is not fixedly placed, at this time, the fixed clamping plate 34 is blocked by the clamping block 35, the second spring is in a compressed state, so that the push rod 32 is stored in the inside of the guide cylinder 31, so that the triangular push block 33 is close to the tray 30, so that the fixing mechanism is in a retracted state, thereby facilitating the screen plate 2 to be placed on the tray 30;

[0054] When the screen plate 2 is placed on the tray 30, rotate the fixed clamping plate 34, so that the fixed clamping plate 34 is separated from the rear of the clamping block 35, so that the second spring resets, pushes the push rod 32 to slide out of the guide cylinder 31, and pushes the triangular push block 33 to contact the right angle plate on the bottom surface of the screen plate 2, so as to fix the screen plate 2 on the tray 30;

[0055] When the screen plate 2 is cleaned, pull the fixed clamping plate 34 to move to the rear of the clamping block 35, rotate the fixed clamping plate 34, so that the fixed clamping plate 34 is engaged with the clamping block 35, the fixed clamping plate 34 drives the push rod 32 to slide and store in the guide cylinder 31, so that the second spring is compressed, so that the triangular push block 33 is retracted to the side surface of the tray 30, so as to release the screen plate 2, thereby facilitating the screen plate 2 to be taken off.

[0056] As shown, Figures 8-12 The two said columns 28 are fixedly connected with a concave positioning seat 36 on one side close to the tray 30; the two protrusions of the concave positioning seat 36 are semicylindrical; the two ends of the rotating shaft 29 are fixedly connected with a positioning unit; one said positioning unit is fixedly installed vertically downward, and the other said positioning unit is fixedly installed horizontally toward the cleaning mechanism; the positioning unit comprises a fixed shell 37 fixedly installed on the outer circle of the rotating shaft 29; a sliding seat 38 is slidably installed in the inside of the fixed shell 37; a third spring 39 is fixedly connected between the inside wall of the fixed shell 37 and the side of the sliding seat 38 away from the column 28; a clamping column 40 is fixedly connected on the sliding seat 38; the clamping column 40 can be engaged with the concave positioning seat 36;

[0057] When the work is in progress, the tray 30 is rotated to the horizontal state, the rotating shaft 29 is driven to rotate, the positioning unit on one side is rotated to the vertical state, that is, the clamping column 40 on the side is in the vertical state, and the clamping column 40 is clamped by the protrusions on both sides of the concave positioning seat 36, at the same time, the third spring 39 pushes the sliding seat 38 to slide along the inside of the fixed shell 37, the clamping column 40 is pushed and pressed in the concave positioning seat 36, the fixing of the rotating shaft 29 is realized, the tray 30 is fixed, and the tray 30 is kept in the horizontal state, and then the screen plate 2 is conveniently fixed and placed;

[0058] After the screen plate 2 is fixed and placed on the tray 30, the tray 30 and the screen plate 2 are rotated, the rotating shaft 29 is driven to rotate, the positioning unit in the vertical state is driven to rotate, the clamping column 40 is separated from the concave positioning seat 36, and the positioning unit on the other side is rotated from the horizontal state to the vertical state, that is, the clamping column 40 on the side is rotated into the concave positioning seat 36 on the side to be clamped, so that the tray 30 and the screen plate 2 are kept in the vertical state, and then the screen plate 2 is conveniently cleaned.

[0059] Working principle: when the screen plate 2 is not fixed and placed, the sliding block on the electric sliding rail 6 drives the cross beam 7 and the vertical beam 8 to move away from the fixing mechanism, so that the blowing cross pipe 3 and the spraying cross pipe 4 move away from the fixing mechanism; the lifting seat 10 is located at the top of the vertical beam 8, that is, the blowing cross pipe 3 and the spraying cross pipe 4 are located above the vertical screen plate 2; at this time, the fixed clamping plate 34 is blocked by the clamping block 35, the second spring is in the compressed state, the push rod 32 is stored in the inside of the guide cylinder 31, the triangular push block 33 is close to the tray 30, the fixing mechanism is in the retracted state, and the screen plate 2 is conveniently placed on the tray 30; at the same time, when the tray 30 is rotated to the horizontal state, the rotating shaft 29 is driven to rotate, the positioning unit on one side is rotated to the vertical state, that is, the clamping column 40 on the side is in the vertical state, and the clamping column 40 is clamped by the protrusions on both sides of the concave positioning seat 36, at the same time, the third spring 39 pushes the sliding seat 38 to slide along the inside of the fixed shell 37, the clamping column 40 is pushed and pressed in the concave positioning seat 36, the fixing of the rotating shaft 29 is realized, the tray 30 is fixed, and the tray 30 is kept in the horizontal state;

[0060] After the screen plate 2 is offline, the screen plate 2 is placed on the tray 30, the fixed clamping plate 34 is rotated, the fixed clamping plate 34 is separated from the clamping block 35, the second spring is reset, the push rod 32 is pushed out from the inside of the guide cylinder 31, the triangular push block 33 is pushed to contact the right-angled plate on the bottom surface of the screen plate 2, and the screen plate 2 is fixed to the tray 30.

[0061] Then, the rotating of the supporting plate 30 and the screen plate 2 drives the rotating shaft 29 to rotate, drives the positioning unit in the vertical state to rotate, so that the clamping column 40 is separated from the concave positioning seat 36, and the positioning unit on the other side is rotated from the horizontal state to the vertical state, that is, the clamping column 40 on the side is rotated into the concave positioning seat 36 on the side to be clamped, so that the supporting plate 30 and the screen plate 2 are kept in the vertical state;

[0062] At this time, the sliding block on the electric sliding rail 6 drives the cross beam 7 and the vertical beam 8 to approach the fixing mechanism, so that the blowing cross pipe 3 and the spraying cross pipe 4 approach the screen plate 2 in the vertical state; the driving motor 12 drives the gear 13 to rotate, drives the face gear 11 to rotate, drives the lead screw 9 to rotate, drives the lifting seat 10 to move downward along the guide rod inside the vertical beam 8, and drives the blowing cross pipe 3 and the spraying cross pipe 4 to move downward at a constant speed;

[0063] At the same time, the water pump on the water tank 5 filled with cleaning solvent sends the cleaning solvent into one of the spraying cross pipes 4 below, and then the spraying cross pipe 4 sprays the cleaning solvent to the surface of the screen plate 2 for cleaning; then, the water pump on the water tank 5 filled with pure water sends the pure water into one of the spraying cross pipes 4 above, and then the spraying cross pipe 4 sprays the pure water to the surface of the screen plate 2 to flush the residual cleaning solvent; finally, the air pump sends high-pressure gas into the blowing cross pipe 3, and the blowing cross pipe 3 blows the high-pressure gas flow to the screen plate 2 inclined downward, so as to dry the water stains on the surface of the screen plate 2;

[0064] When the water pump on the water tank 5 sends the pure water or cleaning solvent into the spraying cross pipe 4, first, it enters the water cavity 15, and then is divided into the connecting cavities 16 through the through grooves 17, and then enters the spraying grooves 19 on both sides through the connecting grooves on both sides, and then sprays the surface of the screen plate 2 through the guide of the spraying groove 19 for cleaning; at the same time, after the pure water or cleaning solvent enters the connecting cavities 16 through the through grooves 17, it passes through the impeller 22, drives the impeller 22 to rotate, drives the rotating rod 21 to rotate, drives the sliding cylinder 23 to rotate, drives the sliding rod 24 to rotate, and drives the velvet brush 20 to rotate, so that the velvet brush 20 rotates to wipe the screen plate 2, thereby improving the wiping effect on the screen plate 2; at the same time, the elastic force of the first spring 25 pushes the sliding rod 24 out of the inside of the sliding cylinder 23, pushes the velvet brush 20 to extrude the screen plate 2, and further improves the wiping effect on the screen plate 2; thereby realizing the automatic cleaning of the screen plate 2, and improving the quality and efficiency of the cleaning of the screen plate 2;

[0065] When the screen 2 is cleaned, the supporting plate 30 is reversely rotated to rotate the supporting plate 30 to a horizontal state, so that the screen 2 is rotated to a horizontal state; the fixed clamping plate 34 is pulled to move to the rear of the clamping block 35, the fixed clamping plate 34 is rotated to make the fixed clamping plate 34 clamped with the clamping block 35, the fixed clamping plate 34 drives the push rod 32 to slide and be stored in the guide cylinder 31, so that the second spring is compressed, the triangular push block 33 is retracted to the side surface of the supporting plate 30, and the screen 2 is released, so that the screen 2 is conveniently taken off.

[0066] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. An automatic screen cleaning device suitable for solar cells, characterized in that: Including the bottom plate (1), one side of the top surface of the bottom plate (1) is provided with a fixing mechanism, and the fixing mechanism is used for fixing the screen printing plate (2), the other side of the top surface of the bottom plate (1) is provided with a cleaning mechanism, and the cleaning mechanism is used for cleaning the screen printing plate (2); The cleaning mechanism comprises a moving lifting unit arranged on the top surface of the bottom plate (1); one side of the moving lifting unit close to the fixing mechanism is provided with a blowing cross pipe (3); the air outlet of the blowing cross pipe (3) is inclined downward; the blowing cross pipe (3) is connected with an air pump through a pipeline; two spraying cross pipes (4) are further arranged below the blowing cross pipe (3); two water tanks (5) are fixedly connected to the top surface of the bottom plate (1) away from the fixing mechanism; pure water and cleaning solvent are respectively contained in the two water tanks (5); a water pump is arranged on the side surface of the water tank (5); one of the spraying cross pipes (4) is communicated with the water pump of the water tank (5) containing pure water through a pipeline; the other spraying cross pipe (4) is communicated with the water pump of the water tank (5) containing cleaning solvent through a pipeline.

2. The apparatus for automatically cleaning a screen for a solar cell according to claim 1, wherein: The moving lifting unit comprises electric sliding rails (6) fixedly connected to the top surface of the bottom plate (1) on both sides; the top surface of the sliding block of the two electric sliding rails (6) is fixedly connected with a cross beam (7); the top surface of the cross beam (7) is fixedly connected with a vertical beam (8); the inner cavity of the vertical beam (8) is rotatably connected with a lead screw (9); the inner cavity of the vertical beam (8) is fixedly connected with a guide rod on both sides; the inner cavity of the vertical beam (8) is slidably connected with a lifting seat (10); the lead screw (9) is threadedly connected with the lifting seat (10); the lifting seat (10) is slidably connected with the guide rod; the bottom outer ring of the lead screw (9) is fixedly connected with a face gear (11); the top surface of the cross beam (7) is fixedly connected with a driving motor (12); the output shaft of the driving motor (12) penetrates through the side wall of the vertical beam (8); the output shaft of the driving motor (12) is fixedly connected with a gear (13); the gear (13) is engaged with the face gear (11); the side of the lifting seat (10) close to the fixing mechanism is fixedly connected with a mounting bracket (14); the blowing cross pipe (3) and the two spraying cross pipes (4) are bolted with the mounting bracket (14).

3. The apparatus for automatically cleaning a screen for a solar cell according to claim 1, wherein: The inner side of the spraying cross pipe (4) away from the fixing mechanism is provided with a water passing cavity (15); one end of the water passing cavity (15) is communicated with the water pump of the water tank (5) through a water pipe; the middle part of the spraying cross pipe (4) is provided with a connecting cavity (16); a plurality of through grooves (17) are uniformly arranged on both sides between the water passing cavity (15) and the connecting cavity (16); the middle part of the side of the spraying cross pipe (4) close to the fixing mechanism is provided with a receiving groove (18); the two sides of the receiving groove (18) are provided with spraying grooves (19); the spraying grooves (19) and the connecting cavity (16) are communicated through a plurality of connecting grooves; the receiving groove (18) is provided with a fluff brush (20).

4. The apparatus for automatically cleaning a screen for a solar cell according to claim 3, wherein: The top surface of the accommodating groove (18) is rotationally installed with a plurality of rotating rods (21); the top end of the rotating rod (21) extends into the inside of the connecting cavity (16); the outer circle of the top of the rotating rod (21) is fixedly connected with an impeller (22); the impeller (22) is located in the inside of the connecting cavity (16); the bottom end of the rotating rod (21) is fixedly connected with a sliding cylinder (23); the inside of the sliding cylinder (23) is slidably installed with a sliding rod (24); the top end of the sliding rod (24) and the inside top end of the sliding cylinder (23) are fixedly connected with a first spring (25); the lint brush (20) is installed at the bottom end of the sliding rod (24).

5. The apparatus for automatically cleaning a screen for a solar cell according to claim 4, wherein: The bottom end of the sliding rod (24) is fixedly connected with a mounting plate (26); the bottom surface of the mounting plate (26) and the lint brush (20) are adhered by magic tape.

6. The apparatus for automatically cleaning a screen for a solar cell according to claim 4, wherein: The through grooves (17) on both sides are located on both sides of the impeller (22); the through grooves (17) are obliquely arranged, and the oblique directions of the through grooves (17) on both sides are opposite; the oblique directions of the through grooves (17) on the same side are the same.

7. The apparatus for automatically cleaning a screen for a solar cell according to claim 4, wherein: The bottom side of the spraying groove (19) is fixedly connected with an inclined flow guide plate (27).

8. The apparatus for automatically cleaning a screen for a solar cell according to claim 1, wherein: The fixing mechanism comprises two vertical columns (28) fixedly connected to the top surface of the bottom plate (1); the top of the two vertical columns (28) is rotationally installed with a rotating shaft (29); the middle of the rotating shaft (29) is fixedly connected with a supporting plate (30); the screen plate (2) is placed on the top surface of the supporting plate (30); the bottom surface of the screen plate (2) is fixedly connected with a right angle plate on the inside of the four corners; the bottom surface of the supporting plate (30) is fixedly connected with a guide cylinder (31) on the four corners; the inside of the guide cylinder (31) is slidably installed with a push rod (32); the end of the push rod (32) away from the supporting plate (30) is fixedly connected with a triangular push block (33); the triangular push block (33) can be in extrusion contact with the right angle plate on the ground of the screen plate (2); the end of the push rod (32) close to the supporting plate (30) is fixedly connected with a second spring between the inside of the guide cylinder (31).

9. The apparatus for automatically cleaning a screen for a solar cell according to claim 8, wherein: The middle part of the bottom surface of the guide cylinder (31) away from the supporting plate (30) is provided with a sliding groove; the end of the push rod (32) close to the inside of the guide cylinder (31) is fixedly connected with a protrusion on the outside, and the protrusion is in sliding cooperation with the sliding groove; the middle part of the protrusion of the push rod (32) is rotationally installed with a fixed clamping plate (34); the end of the guide cylinder (31) close to the middle part of the supporting plate (30) is fixedly connected with a clamping block (35) on both sides of the sliding groove; the fixed clamping plate (34) can be blocked by the clamping block (35).

10. The apparatus for automatically cleaning a screen for a solar cell according to claim 8, wherein: Two said columns (28) are fixed with concave positioning seats (36) on one side of the supporting plate (30); two protrusions of the concave positioning seat (36) are semicylindrical; two ends of the rotating shaft (29) are fixed with positioning units; one positioning unit is fixedly installed vertically downward, and the other positioning unit is fixedly installed horizontally toward the cleaning mechanism; the positioning unit comprises a fixed shell (37) fixedly installed on the outer circle of the rotating shaft (29); a sliding seat (38) is slidingly installed in the fixed shell (37); a third spring (39) is fixed between the side, away from the column (28), of the sliding seat (38) and the inner wall of the fixed shell (37); a clamping column (40) is fixed on the sliding seat (38); the clamping column (40) can be clamped with the concave positioning seat (36).

Images