A step-by-step printing apparatus for photovoltaic crystalline silicon cells

Abstract

The application discloses a kind of photovoltaic crystalline silicon cell's step-by-step printing device, specifically relates to photovoltaic crystalline silicon cell processing technical field, including device base and device roof frame, the top end side of the device base is fixedly installed with the article mechanism, the bottom of the device roof frame is fixedly installed with installation top plate, the bottom of the installation top plate is fixedly installed with two printing mechanisms, the top end side of the device base is fixedly installed with material conveying mechanism, far from printing mechanism, the application, by setting two printing mechanisms, cooperate and use article mechanism and material conveying mechanism, realize sequentially to multiple photovoltaic crystalline silicon cell piece automatic feeding, first step automatic printing and synchronous drying, second step automatic printing and synchronous drying, automatic material, to improve the overall printing efficiency of the whole device to photovoltaic crystalline silicon cell piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic crystalline silicon cell processing, in particular to a step-by-step printing device for photovoltaic crystalline silicon cells. BACKGROUND

[0002] Crystalline silicon photovoltaic cells, also known as solar cells, include single-crystal silicon solar cells and polycrystalline silicon solar cells. Photovoltaic power generation is the conversion of light energy into electricity by using the photovoltaic effect of the semiconductor interface. Photovoltaic crystalline silicon cells need to be printed during production and processing.

[0003] Publication No. "CN112937082B" discloses a step-by-step printing device for photovoltaic crystalline silicon cells, which comprises a material ladder, a placing plate, a first mounting frame, a bearing plate, a clamping frame, a lead screw, a liquid tank, a liquid conveying pipe, a clamping mold frame, an infrared sensor, a first printing plate, a second printing plate, a third printing plate, a clamping device and a limiting printing device. The material ladder bottom is welded and fixed with a mounting column. The placing plate top is provided with a placing groove. The first mounting frame is fixed on both sides of the material ladder top. The bearing plate is fixed with a silk block on both sides. The clamping frame is provided with a first clamping hole on both sides. The step-by-step printing device for photovoltaic crystalline silicon cells is provided with a first printing plate, a second printing plate and a third printing plate. The main grid line, the auxiliary grid line and the auxiliary grid line are printed by different printing plates, which avoids the repeated printing of the main grid line during the printing process, thereby reducing the electrical performance of the overall crystalline silicon cell.

[0004] However, the step-by-step printing device still has some problems when printing photovoltaic crystalline silicon cells. The structure is relatively simple, and it cannot effectively feed and discharge the photovoltaic crystalline silicon cells automatically. It cannot effectively dry during step-by-step printing, and there is excess printing material on the printing screen plate during printing, which cannot be effectively recycled. Therefore, we propose a step-by-step printing device for photovoltaic crystalline silicon cells to solve the above problems. SUMMARY

[0005] The present application aims to provide a step-by-step printing device for photovoltaic crystalline silicon cells to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a step-by-step printing device for photovoltaic crystalline silicon cells, comprising a device base and a device top frame, a placing mechanism is fixedly installed on one side of the top end of the device base, an installation top plate is fixedly installed at the bottom end of the device top frame, two printing mechanisms are fixedly installed at the bottom end of the installation top plate, and a material conveying mechanism is fixedly installed on the side of the top end of the device base away from the printing mechanism.

[0007] Preferably, the printing mechanism comprises a printing outer frame, a mounting vertical frame is fixedly installed at the four corners of the printing outer frame, the mounting vertical frame is fixedly installed at the bottom end of a mounting top plate, a printing screen plate is detachably installed at the inner bottom of the printing outer frame, a guide sliding frame is fixedly installed at the two sides of the printing outer frame, a U-shaped frame is slidingly clamped in the two guide sliding frames, a linear electric rail is fixedly installed in the guide sliding frame, the driving end of the linear electric rail and the bottom end of the U-shaped frame are fixedly installed, a guide shaft is slidingly inserted into the two sides of the U-shaped frame, a driving top frame is fixedly installed at the top end of the guide shaft, a printing squeegee is fixedly installed at the bottom end of the guide shaft, the printing squeegee is provided as a hollow structure, a scraper is integrally formed at the bottom of the printing squeegee, a material guiding vertical pipe is fixedly installed at the top end of the printing squeegee, the material guiding vertical pipe is movably penetrated through the U-shaped frame, the material guiding vertical pipe is fixedly installed at the middle part of the driving top frame, a material control valve is fixedly installed at the top end of the material guiding vertical pipe, and a first pipe is fixedly installed at the top end of the material control valve.

[0008] Preferably, the bottom of the printing squeegee is provided with an inlet slot and a discharge slot, a first sealing plate is arranged on the side of the inner wall of the printing squeegee close to the inlet slot, a second sealing plate is arranged on the side of the outer wall of the printing squeegee close to the discharge slot, a fixed outer cylinder is fixedly installed at the top of the two sides of the first sealing plate and the second sealing plate, a knob outer cylinder is fixedly clamped at the middle part of the fixed outer cylinder, a knob middle shaft is rotatably installed at the middle part of the knob outer cylinder, a torsional spring is arranged between the outer side of the knob middle shaft and the inner side of the knob outer cylinder, a fixed seat is fixedly installed at the end of the knob middle shaft away from the knob outer cylinder, and the fixed seat at the end of the first sealing plate is fixedly installed on the inner wall of the printing squeegee, and the fixed seat at the end of the second sealing plate is fixedly installed on the outer wall of the printing squeegee.

[0009] Preferably, two symmetrically distributed support side frames are fixedly installed at the top of the U-shaped frame, an auxiliary shaft is rotatably installed at the top of the support side frame, a driving frame is fixedly installed at the end of the auxiliary shaft, a driving shaft is fixedly installed at the two ends of the driving top frame, the driving shaft is slidingly clamped in the corresponding driving frame, a rotary air cylinder is fixedly installed at the side end of one of the support side frames, and the driving end of the rotary air cylinder and the end of the auxiliary shaft are coaxially fixedly installed.

[0010] Preferably, a drying outer frame is fixedly installed at the bottom end of the printing outer frame, the drying outer frame is provided as a hollow structure, an air guide pipe is fixedly installed at the outer side of the drying outer frame, and a plurality of evenly distributed air discharge slots are formed in the inner side of the drying outer frame.

[0011] Preferably, the end of the first pipe of the two printing mechanisms is fixedly installed with a bellows, the opposite end of the two bellows is fixedly installed with a first three-way pipe, the end of the first three-way pipe is fixedly installed with a second pipe, the second pipe is fixedly clamped on the mounting top plate, the end of the air guide pipe of the two printing mechanisms is fixedly installed with a third pipe, the opposite end of the two third pipes is fixedly installed with a second three-way pipe, the end of the second three-way pipe is fixedly installed with a fourth pipe, and the fourth pipe is fixedly clamped on the mounting top plate.

[0012] Preferably, the storage mechanism comprises a rotating seat fixedly installed on one side of the top end of the device base, a rotating column rotatably installed in the middle of the rotating seat, a lifting shaft coaxially and slidingly clamped on the top end of the rotating column, a transposition frame fixedly installed on the top end of the lifting shaft, four storage frames fixedly installed on the outer side of the transposition frame in a ring array, a positioning frame fixedly installed on the top end of the storage frame, a bearing fixedly sleeved on the top of the lifting shaft, a lifting frame fixedly installed on the outer side of the bearing, a lifting cylinder fixedly installed on one side of the top end of the device base close to the lifting frame, the driving end of the lifting cylinder and the lifting frame being fixedly installed, a crown gear fixedly sleeved on the middle of the rotating column, a drive gear meshingly connected to the side end of the crown gear, and a drive motor fixedly installed on one side of the top end of the device base close to the drive gear, the driving end of the drive motor and the drive gear being coaxially and fixedly installed.

[0013] Preferably, the positions of the four storage frames are sequentially set as a feeding station, a first printing station, a second printing station and a discharging station, the positions of the two printing mechanisms vertically correspond to the positions of the first printing station and the second printing station, and the positions of the two material conveying mechanisms correspond to the positions of the feeding station and the discharging station.

[0014] Preferably, the drying outer frame of the printing mechanism can be movably sleeved on the outside of the corresponding positioning frame.

[0015] Preferably, the material conveying mechanism comprises two groups of material conveying side frames symmetrically distributed, a connecting frame fixedly installed between the two material conveying side frames, the connecting frame being fixedly installed on the top end of the device base, material conveying rollers provided at the two end portions of each group of material conveying side frames, material conveying belts movably sleeved on the outside of the corresponding two material conveying rollers, fixed side frames fixedly installed on the outside of the material conveying side frames, the fixed side frames being fixedly installed on the top end of the device base, storage through slots corresponding to the material conveying side frames being formed on the side of the storage frame away from the transposition frame, and the material conveying side frames being movably penetrated through the corresponding storage through slots.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. Through setting two printing mechanisms, cooperating with the use of the material placing mechanism and the material conveying mechanism, the automatic feeding, the first step automatic printing and synchronous drying, the second step automatic printing and synchronous drying and the automatic material returning of the plurality of photovoltaic crystal silicon battery pieces are realized in sequence, so that the overall printing efficiency of the whole device for the photovoltaic crystal silicon battery pieces is improved.

[0018] 2. Through setting the printing mechanism, the excess printing material on the upper surface of the printing screen plate is sucked into the printing squeegee for recycling through the feeding slot during printing, and the printing material in the printing squeegee is automatically and uniformly discharged on the upper surface of the printing screen plate through the discharging slot, so as to facilitate the subsequent printing of the next photovoltaic crystal silicon battery piece. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0020] Figure 1 is a structural schematic diagram of the present application,

[0021] Figure 2 is a structural connection schematic diagram of the printing mechanism in the present application,

[0022] Figure 3 is a structural schematic diagram of the present application, Figure 2 is an enlarged view of A in the present application,

[0023] Figure 4 is a structural schematic diagram of the printing squeegee in the present application,

[0024] Figure 5 is an enlarged view of B in the present application, Figure 4

[0025] Figure 6 is an enlarged view of C in the present application, Figure 4

[0026] Figure 7 is a structural connection schematic diagram of the installation top plate and the printing mechanism in the present application,

[0027] Figure 8 is a structural connection schematic diagram of the material placing mechanism in the present application,

[0028] Figure 9 is a structural connection schematic diagram of the material conveying mechanism in the present application.

[0029] ​​In the diagram: 1. Device base; 2. Device top frame; 3. Placement mechanism; 4. Mounting top plate; 5. Printing mechanism; 6. Material conveying mechanism; 7. Corrugated pipe; 71. First tee pipe; 72. Second pipe; 8. Third pipe; 81. Second tee pipe; 82. Fourth pipe; 51. Printing outer frame; 52. Mounting longitudinal frame; 53. Printing screen; 54. Guide slide; 541. Linear electric rail; 55. U-shaped frame; 551. Guide shaft; 552. Drive top frame; 56. Printing scraper; 57. Material control valve; 571. First pipe; 58. Support side frame; 581. Auxiliary shaft; 582. Drive frame; 583. Drive shaft; 584. Rotary cylinder; 59. Drying outer frame; 591. Air guide pipe; 59 2. Exhaust chute; 501. Scraper; 502. Feed chute; 503. Discharge chute; 561. Guide pipe; 562. First sealing plate; 563. Second sealing plate; 564. Fixed outer cylinder; 565. Knob outer cylinder; 566. Knob central shaft; 567. Torsion spring; 568. Fixed seat; 31. Rotating seat; 32. Rotating column; 33. Lifting shaft; 34. Rotating frame; 35. Shelf; 36. Positioning frame; 37. Bearing; 371. Lifting frame; 372. Lifting cylinder; 38. Crown gear; 39. Drive gear; 391. Drive motor; 301. Shelf; 61. Conveying side frame; 62. Connecting frame; 63. Conveying roller; 65. Conveying belt; 66. Fixed side frame. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example: Figures 1-9 As shown, the present invention provides a step-by-step printing device for photovoltaic crystalline silicon cells, including a device base 1 and a device top frame 2. A placement mechanism 3 is fixedly installed on one side of the top of the device base 1, and a mounting plate 4 is fixedly installed on the bottom of the device top frame 2. Two printing mechanisms 5 are fixedly installed on the bottom of the mounting plate 4, and a material conveying mechanism 6 is fixedly installed on the side of the top of the device base 1 away from the printing mechanism 5.

[0032] The placing mechanism 3 comprises a rotating seat 31 fixedly installed on the top end of the device base 1, a rotating column 32 rotatably installed in the middle of the rotating seat 31, a lifting shaft 33 coaxially and slidingly sleeved on the top end of the rotating column 32, a rotating frame 34 fixedly installed on the top end of the lifting shaft 33, and four placing racks 35 fixedly installed on the outer side of the rotating frame 34 in an annular array. A crown gear 38 is fixedly sleeved on the middle of the rotating column 32, a driving gear 39 is engagedly connected to the side end of the crown gear 38, a driving motor 391 is fixedly installed on the side of the top end of the device base 1 close to the driving gear 39, and the driving end of the driving motor 391 and the driving gear 39 are coaxially and fixedly installed. The driving motor 391 is controlled to be turned on to drive the driving gear 39 to rotate, drive the crown gear 38 to rotate, and thus drive the rotating column 32 and the lifting shaft 33 to rotate, and further drive the rotating frame 34 and the four placing racks 35 to rotate.

[0033] The positions of the four placing racks 35 are sequentially set as a feeding station, a first printing station, a second printing station and a discharging station. The positions of the two printing mechanisms 5 vertically correspond to the positions of the first printing station and the second printing station respectively, and the positions of the two material conveying mechanisms 6 correspond to the positions of the feeding station and the discharging station respectively. The four placing racks 35 are rotated to change the positions of the placing racks 35, and each placing rack 35 is sequentially moved from the feeding station, the first printing station, the second printing station to the discharging station.

[0034] A positioning frame 36 is fixedly installed on the top end of the placing rack 35 to position the photovoltaic crystalline silicon cell transported to the placing rack 35, thereby improving the stability of subsequent step-by-step printing. A bearing 37 is fixedly sleeved on the top of the lifting shaft 33, a lifting frame 371 is fixedly installed on the outer side of the bearing 37, a lifting cylinder 372 is fixedly installed on the side of the top end of the device base 1 close to the lifting frame 371, and the driving end of the lifting cylinder 372 and the lifting frame 371 are fixedly installed. The lifting cylinder 372 is controlled to be turned on to drive the lifting frame 371 and the lifting shaft 33 to lift, thereby driving the rotating frame 34 and the four placing racks 35 to lift.

[0035] The material conveying mechanism 6 comprises two groups of material conveying side frames 61 symmetrically distributed, a connecting frame 62 fixedly installed between the two material conveying side frames 61, the connecting frame 62 fixedly installed on the top end of the device base 1, material conveying rollers 63 provided at the two end portions of each group of material conveying side frames 61, and material conveying belts 65 movably sleeved on the outer sides of the two material conveying rollers 63 correspondingly. In use, a plurality of photovoltaic crystalline silicon cells to be printed are placed on the upper surfaces of the material conveying belts 65, the material conveying belts 65 are driven by rotating the material conveying rollers 63 to be turned on, and the plurality of photovoltaic crystalline silicon cells are sequentially and automatically transported to the feeding station.

[0036] Or from the discharge station after printing photovoltaic crystal silicon cell automatically.

[0037] The outer side of the material conveying side frame 61 is fixedly installed with a fixed side frame 66, which is fixedly installed at the top end of the device base 1. The storage rack 35 is provided with a storage slot 301 corresponding to the material conveying side frame 61 on the side away from the indexing rack 34. The material conveying side frame 61 can be movably penetrated through the corresponding storage slot 301. When feeding, the storage rack 35 is located below the fixed side frame 66. As the storage rack 35 moves upward, the material conveying side frame 61 movably penetrates through the corresponding storage slot 301 from above. The photovoltaic crystal silicon cells at the end of the material conveying belt 65 are gradually moved to the upper surface of the corresponding storage rack 35 and placed in the positioning frame 36.

[0038] When discharging, the storage rack 35 is located above the fixed side frame 66. As the storage rack 35 moves downward, the material conveying side frame 61 movably penetrates through the corresponding storage slot 301 from below. The photovoltaic crystal silicon cells are gradually placed at the end of the material conveying belt 65.

[0039] The printing mechanism 5 comprises a printing outer frame 51, four corners of which are fixedly installed with installation vertical frames 52, which are fixedly installed at the bottom end of the installation top plate 4. The inner bottom of the printing outer frame 51 is detachably installed with a printing screen plate 53, which is convenient for disassembling and replacing the appropriate printing screen plate 53 according to the printing needs of the photovoltaic crystal silicon cells. The two sides of the printing outer frame 51 are fixedly installed with guide sliding frames 54. A U-shaped frame 55 is slidingly clamped in the two guide sliding frames 54. A linear electric rail 541 is fixedly installed in the guide sliding frame 54. The driving end of the linear electric rail 541 and the bottom end of the U-shaped frame 55 are fixedly installed. The control opens the linear electric rail 541 to drive the U-shaped frame 55 to stably translate and slide in the two guide sliding frames 54. The two sides of the U-shaped frame 55 are slidingly inserted with guide shafts 551. The top end of the guide shaft 551 is fixedly installed with a driving top frame 552. The bottom end of the guide shaft 551 is fixedly installed with a printing squeegee 56. The driving of the driving top frame 552 lifting drives the guide shaft 551 and the printing squeegee 56 to stably lift. The printing squeegee 56 is provided with a hollow structure. The bottom of the printing squeegee 56 is integrally formed with a scraper 501. During printing, the printing squeegee 56 is controlled to descend, so that the scraper 501 contacts the upper surface of the printing screen plate 53. The U-shaped frame 55 drives the printing squeegee 56 and the scraper 501 to translate, so as to print the photovoltaic crystal silicon cells.

[0040] The middle of the top end of the printing cylinder 56 is fixedly provided with a material guiding vertical pipe 561, the material guiding vertical pipe 561 is movably penetrated through the U-shaped frame 55, the top of the material guiding vertical pipe 561 is fixedly provided in the middle of the driving top frame 552, the top end of the material guiding vertical pipe 561 is fixedly provided with a material controlling valve 57, and the top end of the material controlling valve 57 is fixedly provided with a first pipe 571; the end of the first pipe 571 of each of the two printing mechanisms 5 is fixedly provided with a bellows 7, the opposite ends of the two bellows 7 are fixedly provided with a first three-way pipe 71, the end of the first three-way pipe 71 is fixedly provided with a second pipe 72, and the second pipe 72 is fixedly clamped on the mounting top plate 4; wherein the end of the second pipe 72 is connected with the material guiding end of the material guiding pump mechanism, the material guiding pump mechanism and the material controlling valve 57 are opened, and the printing material is guided into the printing cylinder 56 through the second pipe 72, the first three-way pipe 71, the corresponding bellows 7, the first pipe 571 and the material guiding vertical pipe 561.

[0041] Or the material guiding pump mechanism and the material controlling valve 57 are opened to suck the excess printing material.

[0042] The bottom of the printing cylinder 56 is provided with an inlet slot 502 and a discharge slot 503, the inner wall of the printing cylinder 56 is provided with a first sealing plate 562 on the side close to the inlet slot 502, the outer wall of the printing cylinder 56 is provided with a second sealing plate 563 on the side close to the discharge slot 503, the top of the first sealing plate 562 and the top of the second sealing plate 563 are both fixedly provided with a fixed outer cylinder 564, the middle of the fixed outer cylinder 564 is fixedly provided with a knob outer cylinder 565, the middle of the knob outer cylinder 565 is rotatably provided with a knob middle shaft 566, the outer side of the knob middle shaft 566 and the inner side of the knob outer cylinder 565 are provided with a torsion spring 567, the end of the knob middle shaft 566 away from the knob outer cylinder 565 is fixedly provided with a fixed seat 568, the fixed seat 568 at the end of the first sealing plate 562 is fixedly provided on the inner wall of the printing cylinder 56, and the fixed seat 568 at the end of the second sealing plate 563 is fixedly provided on the outer wall of the printing cylinder 56; by rotating the knob middle shaft 566 and cooperating with the torsion spring 567, the first sealing plate 562 is conveniently rotated and reset on the inner side of the printing cylinder 56, and the second sealing plate 563 is conveniently rotated and reset on the outer side of the printing cylinder 56.

[0043] When the first sealing plate 562 is rotated on the inner side of the printing cylinder 56, the inlet slot 502 is opened, and the excess printing material on the upper surface of the printing screen plate 53 is conveniently sucked into the printing cylinder 56 through the inlet slot 502 for recycling during printing;

[0044] When the second sealing plate 563 is rotated on the outer side of the printing cylinder 56, the discharge slot 503 is opened, and the printing material in the printing cylinder 56 is automatically and uniformly discharged on the upper surface of the printing screen plate 53 through the discharge slot 503 after printing, so as to facilitate the printing of the next photovoltaic crystalline silicon cell.

[0045] The top of the U-shaped frame 55 is fixedly installed with two symmetrically distributed support side frames 58, the top of the support side frame 58 is rotatably installed with an auxiliary shaft 581, the end of the auxiliary shaft 581 is fixedly installed with a driving frame 582, the two ends of the driving top frame 552 are fixedly installed with a driving shaft 583, the driving shaft 583 is slidingly connected in the corresponding driving frame 582, the side end of one of the support side frames 58 is fixedly installed with a rotary air cylinder 584, the driving end of the rotary air cylinder 584 and the end of the auxiliary shaft 581 are coaxially fixedly installed, in use, the rotary air cylinder 584 is controlled to be turned on to drive the auxiliary shaft 581, the driving top frame 552 is rotated, the driving shaft 583 is slidingly connected in the corresponding driving frame 582, the driving shaft 583 and the driving top frame 552 are driven to ascend and descend.

[0046] The bottom end of the printing outer frame 51 is fixedly installed with a drying outer frame 59, the drying outer frame 59 is provided as a hollow structure, the outer side of the drying outer frame 59 is fixedly installed with an air guide pipe 591, the inner side of the drying outer frame 59 is provided with a plurality of evenly distributed exhaust grooves 592; the end of the air guide pipe 591 in each of the two printing mechanisms 5 is fixedly installed with a third pipe 8, the opposite ends of the two third pipes 8 are fixedly installed with a second three-way pipe 81, the end of the second three-way pipe 81 is fixedly installed with a fourth pipe 82, the fourth pipe 82 is fixedly connected to the installation top plate 4, wherein the end of the fourth pipe 82 is connected to the air outlet end of the drying machine, the drying machine is turned on, the hot air for drying enters the drying outer frame 59 through the fourth pipe 82, the second three-way pipe 81, the corresponding third pipe 8, the corresponding air guide pipe 591, and is uniformly exhausted through the plurality of exhaust grooves 592, the printed photovoltaic crystalline silicon cell pieces can be synchronously air dried, and the printing effect of the device on the photovoltaic crystalline silicon cell pieces is further improved.

[0047] The drying outer frame 59 in the printing mechanism 5 can be movably sleeved outside the corresponding positioning frame 36.

[0048] Working principle: in use, the end of the second pipe 72 is connected to the guide end of the printing material guide pump mechanism, the end of the fourth pipe 82 is connected to the air outlet end of the drying machine;

[0049] And according to the printing requirements of the photovoltaic crystalline silicon cell pieces, the corresponding printing screen plate 53 is disassembled and replaced;

[0050] The lifting cylinder 372 is controlled to be turned on to drive the lifting frame 371 and the lifting shaft 33 to ascend and descend, so as to drive the indexing frame 34 and the four storage frames 35 to ascend and descend; the driving motor 391 is controlled to be turned on to drive the driving gear 39 to rotate, the crown gear 38 is driven to rotate, so as to drive the rotating column 32 and the lifting shaft 33 to rotate, and then drive the indexing frame 34 and the four storage frames 35 to rotate

[0051] A plurality of photovoltaic crystalline silicon cells to be printed are placed on the upper surface of the conveying belt 65, and the conveying belt 65 is driven to rotate by turning on the conveying roller 63, so that the plurality of photovoltaic crystalline silicon cells are automatically transported to the feeding station in sequence;

[0052] When feeding, the shelf 35 is located below the fixed side frame 66, and as the shelf 35 moves upward, the conveying side frame 61 is movably penetrated from above through the corresponding shelf slot 301, and the photovoltaic crystalline silicon cells at the end of the conveying belt 65 are gradually moved to the upper surface of the corresponding shelf 35 and placed in the positioning frame 36, and the photovoltaic crystalline silicon cells transported to the shelf 35 are positioned;

[0053] The position of the shelf 35 and the photovoltaic crystalline silicon cells to be printed is converted by rotating the four shelves 35, and each photovoltaic crystalline silicon cell is sequentially moved from the feeding station, the first printing station, the second printing station to the discharging station;

[0054] The material guide pump mechanism and the material control valve 57 are turned on, the printing material is guided into the printing cylinder 56 through the second pipe 72, the first three-way pipe 71, the corresponding corrugated pipe 7, the first pipe 571, and the material guide vertical pipe 561, at the same time, the second sealing plate 563 rotates outside the printing cylinder 56, the discharge slot 503 is opened, and the printing material in the printing cylinder 56 is automatically and uniformly discharged onto the upper surface of the printing screen plate 53 through the discharge slot 503;

[0055] The auxiliary shaft 581 and the driving top frame 552 are driven to rotate by controlling the opening of the rotary air cylinder 584, the driving shaft 583 slides in the corresponding driving frame 582, drives the driving shaft 583 and the driving top frame 552 to lift, drives the guide shaft 551 and the printing cylinder 56 to stably lift, and the U-shaped frame 55 is driven to stably translate and slide in the two guide slides 54 by controlling the opening of the linear electric rail 541, drives the printing cylinder 56 and the scraper 501 to translate,

[0056] When the photovoltaic crystalline silicon cell is transported to the first printing station, the entire shelf 35 is moved upward, the drying outer frame 59 is movably sleeved outside the corresponding positioning frame 36, and the printing cylinder 56 is controlled to descend, so that the scraper 501 and the upper surface of the printing screen plate 53 are in contact, and the U-shaped frame 55 drives the printing cylinder 56 and the scraper 501 to translate, and the photovoltaic crystalline silicon cell is subjected to the first step of automatic printing;

[0057] When the photovoltaic crystalline silicon cell is transported to the second printing station, the corresponding printing mechanism 5 is used to perform the second step of automatic printing on the photovoltaic crystalline silicon cell;

[0058] After each step of printing, the entire U-shaped frame 55 is lowered, and the photovoltaic crystalline silicon battery is lowered, and the drying machine is turned on. Hot air passes through the fourth pipe 82, the second three-way pipe 81, the corresponding third pipe 8, the corresponding air guide pipe 591 into the drying outer frame 59 and is uniformly discharged through the plurality of exhaust slots 592, which can simultaneously dry the printed photovoltaic crystalline silicon battery, and improve the printing effect of the photovoltaic crystalline silicon battery by the lifting device;

[0059] When printing, the material guide pump mechanism and the material control valve 57 are turned on to suck the excess printing material. At the same time, the first sealing plate 562 rotates inside the printing squeegee 56, and the feeding slot 502 is opened, so that the excess printing material on the upper surface of the printing screen plate 53 is sucked into the printing squeegee 56 through the feeding slot 502 for recycling.

[0060] After the photovoltaic crystalline silicon battery is printed step by step, it is transported to the discharge station. When discharging, the holder 35 is located above the fixed side frame 66. As the holder 35 moves down, the material conveying side frame 61 moves from below and penetrates the corresponding holder slot 301. The photovoltaic crystalline silicon battery is gradually placed at the end of the material conveying belt 65, and the printed photovoltaic crystalline silicon battery is automatically transported out of the discharge station.

[0061] In this way, the multiple photovoltaic crystalline silicon batteries are sequentially automatically fed, first automatically printed and simultaneously dried, second automatically printed and simultaneously dried, and automatically discharged, thereby improving the overall printing efficiency of the photovoltaic crystalline silicon battery by the entire device.

[0062] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A step-by-step printing device for photovoltaic crystalline silicon cells, comprising a device base (1) and a device top frame (2), characterized in that: The top end side of the device base (1) is fixedly installed with a storage mechanism (3), the bottom end of the device top rack (2) is fixedly installed with an installation top plate (4), the bottom end of the installation top plate (4) is fixedly installed with two printing mechanisms (5), and the top end of the device base (1) is fixedly installed with a material conveying mechanism (6) away from the printing mechanism (5); The printing mechanism (5) comprises a printing outer frame (51), the four corners of the printing outer frame (51) are fixedly installed with installation vertical frames (52), the installation vertical frames (52) are fixedly installed at the bottom end of the installation top plate (4), the inner side bottom of the printing outer frame (51) is detachably installed with a printing screen plate (53), both sides of the printing outer frame (51) are fixedly installed with guide sliding frames (54), a U-shaped frame (55) is slidingly clamped in the two guide sliding frames (54), a linear electric rail (541) is fixedly installed in the guide sliding frame (54), the driving end of the linear electric rail (541) and the bottom end of the U-shaped frame (55) are fixedly installed, guide shafts (551) are slidingly inserted into both sides of the U-shaped frame (55), a driving top rack (552) is fixedly installed at the top end of the guide shaft (551), a printing squeegee (56) is fixedly installed at the bottom end of the guide shaft (551), the printing squeegee (56) is provided as a hollow structure, a scraper (501) is integrally formed at the bottom of the printing squeegee (56), a material guiding vertical pipe (561) is fixedly installed at the top end middle of the printing squeegee (56), the material guiding vertical pipe (561) is movably penetrated through the U-shaped frame (55), the top of the material guiding vertical pipe (561) is fixedly installed in the middle of the driving top rack (552), a material control valve (57) is fixedly installed at the top end of the material guiding vertical pipe (561), and a first pipe (571) is fixedly installed at the top end of the material control valve (57); The bottom of the printing squeegee (56) is provided with an inlet slot (502) and a discharge slot (503), the inner wall of the printing squeegee (56) is provided with a first sealing plate (562) near the inlet slot (502), the outer wall of the printing squeegee (56) is provided with a second sealing plate (563) near the discharge slot (503), the top of the first sealing plate (562) and the second sealing plate (563) is fixedly installed with a fixed outer cylinder (564), a knob outer cylinder (565) is fixedly clamped in the middle of the fixed outer cylinder (564), a knob middle shaft (566) is rotatably installed in the middle of the knob outer cylinder (565), a torsion spring (567) is arranged between the outer side of the knob middle shaft (566) and the inner side of the knob outer cylinder (565), a fixed seat (568) is fixedly installed at the end of the knob middle shaft (566) away from the knob outer cylinder (565), the fixed seat (568) of the first sealing plate (562) end is fixedly installed on the inner wall of the printing squeegee (56), and the fixed seat (568) of the second sealing plate (563) end is fixedly installed on the outer wall of the printing squeegee (56). The top of the U-shaped frame (55) is fixedly installed with two symmetrically distributed support side frames (58), the top of the support side frame (58) is rotatably installed with an auxiliary shaft (581), the end of the auxiliary shaft (581) is fixedly installed with a drive frame (582), the two ends of the drive top frame (552) are fixedly installed with a drive shaft (583), the drive shaft (583) is slidingly connected in the corresponding drive frame (582), the side end of one of the support side frames (58) is fixedly installed with a rotary air cylinder (584), and the driving end of the rotary air cylinder (584) and the end of the auxiliary shaft (581) are coaxially fixedly installed. The bottom end of the printing outer frame (51) is fixedly installed with a drying outer frame (59), the drying outer frame (59) is provided as a hollow structure, the outer side of the drying outer frame (59) is fixedly installed with an air guide pipe (591), and the inner side of the drying outer frame (59) is provided with a plurality of uniformly distributed exhaust slots (592).

2. A step-by-step printing apparatus for photovoltaic crystalline silicon cells according to claim 1, characterized in that: The ends of the first pipes (571) in the two printing mechanisms (5) are fixedly installed with corrugated pipes (7), the opposite ends of the two corrugated pipes (7) are fixedly installed with first three-way pipes (71), the ends of the first three-way pipes (71) are fixedly installed with second pipes (72), the second pipes (72) are fixedly connected to the installation top plate (4), the ends of the air guide pipes (591) in the two printing mechanisms (5) are fixedly installed with third pipes (8), the opposite ends of the two third pipes (8) are fixedly installed with second three-way pipes (81), the ends of the second three-way pipes (81) are fixedly installed with fourth pipes (82), and the fourth pipes (82) are fixedly connected to the installation top plate (4).

3. A step-by-step printing apparatus for photovoltaic crystalline silicon cells according to claim 1, characterized in that: The storage mechanism (3) comprises a rotating seat (31) fixedly installed on one side of the top end of the device base (1), a rotating column (32) rotatably installed on the middle part of the rotating seat (31), a lifting shaft (33) coaxially and slidingly connected to the top end of the rotating column (32), a transposition frame (34) fixedly installed on the top end of the lifting shaft (33), four storage frames (35) fixedly installed on the outer side of the transposition frame (34) in an annular array, a positioning frame (36) fixedly installed on the top end of the storage frame (35), a bearing (37) fixedly sleeved on the top of the lifting shaft (33), a lifting frame (371) fixedly installed on the outer side of the bearing (37), a lifting air cylinder (372) fixedly installed on one side of the device base (1) close to the lifting frame (371), the driving end of the lifting air cylinder (372) and the lifting frame (371) being fixedly installed, a crown gear (38) fixedly sleeved on the middle part of the rotating column (32), a drive gear (39) meshingly connected to the side end of the crown gear (38), a drive motor (391) fixedly installed on one side of the device base (1) close to the drive gear (39), and the driving end of the drive motor (391) and the drive gear (39) being coaxially fixedly installed.

4. A step-printing apparatus for photovoltaic crystalline silicon cells according to claim 3, characterized in that: The positions of the four storage racks (35) are sequentially set as a feeding station, a first printing station, a second printing station and a discharging station, the positions of the two printing mechanisms (5) vertically correspond to the positions of the first printing station and the second printing station respectively, and the positions of the two material conveying mechanisms (6) correspond to the positions of the feeding station and the discharging station respectively.

5. A step-printing apparatus for photovoltaic crystalline silicon cells according to claim 4, characterized in that: The drying outer frame (59) in the printing mechanism (5) can movably sleeve the outside of the corresponding positioning frame (36).

6. A step-printing apparatus for photovoltaic crystalline silicon cells according to claim 5, characterized in that: The material conveying mechanism (6) comprises two groups of material conveying side frames (61) which are symmetrically distributed, a connecting frame (62) is fixedly installed between the two material conveying side frames (61), the connecting frame (62) is fixedly installed at the top end of the device base (1), both ends of each group of material conveying side frames (61) are provided with material conveying rollers (63), material conveying belts (65) are movably sleeved outside the corresponding two material conveying rollers (63), fixed side frames (66) are fixedly installed outside the material conveying side frames (61), the fixed side frames (66) are fixedly installed at the top end of the device base (1), the storage racks (35) are provided with storage through slots (301) corresponding to the material conveying side frames (61) on the side away from the rotating frame (34), and the material conveying side frames (61) can movably penetrate through the corresponding storage through slots (301).

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