Six-station solar cell double-half-piece screen printing machine

Abstract

The utility model discloses a six-station solar cell double-half-piece screen printing machine which comprises a base, a plate feeding conveying guide rail, a plate feeding and discharging camera mechanism, a rotating disc mechanism, two half-piece UVW deviation rectifying and aligning mechanisms and a plate discharging conveying guide rail. The lifting module comprises a side support, a lifting servo motor is mounted at the upper end of the side support, a lifting ball screw is connected to the driving end of the lifting servo motor, lifting plates are connected to the two sides of the half-piece UVW deviation rectifying and aligning mechanism, lifting ball nuts are fixed to the outer sides of the lifting plates, and the lifting ball screw is in threaded transmission connection with the lifting ball nuts. The lifting plate slides on the side edge support in the vertical direction, a lifting guide rail is installed on the side edge support, a lifting sliding block is fixed to the outer side of the lifting plate, and the lifting sliding block slides on the lifting guide rail. According to the six-station solar cell double-half-piece screen printing machine, an existing mechanism adopting a spline, a ball screw, a synchronous wheel, a synchronous belt and a servo motor to control lifting of a printing structure is changed, lifting modules on the two sides are used for jointly controlling lifting, production is improved, and the productivity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicon wafer production, especially to a six-station solar cell double-half wafer screen printing machine. BACKGROUND

[0002] Photovoltaic solar silicon wafer is the core part of the solar power generation system and the most valuable part of the solar power generation system. The role of the silicon wafer is to convert solar energy into electric energy, which is stored by the storage battery or directly loaded for work. In the existing printing machine, the lifting of the printing doctor blade part usually adopts a spline structure, which is installed at the lower end of the base, and is connected to the structure of the printing doctor blade through the spline shaft, the ball screw, the synchronous wheel, the synchronous belt and the servo motor mechanism to control the lifting, which is complex in structure and low in lifting efficiency. SUMMARY

[0003] One purpose of the utility model is to provide a six-station solar cell double-half wafer screen printing machine, which replaces the mechanism of spline, ball screw, synchronous wheel, synchronous belt and servo motor with a lifting module to control the lifting of the half-UVW deviation alignment mechanism, thereby improving the printing capacity and efficiency.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] A six-station solar cell double-half wafer screen printing machine comprises a base, an inboard transport guide rail, an in-out board camera mechanism, a turntable mechanism, two half-UVW deviation alignment mechanisms, a lifting module and an outboard transport guide rail. The inboard transport guide rail and the outboard transport guide rail are respectively located on the two sides of the base. The turntable mechanism is between the inboard transport guide rail and the outboard transport guide rail. The in-out board camera mechanism is above the turntable mechanism. Six double-half wafer printing stations are equally spaced on the turntable mechanism. The two half-UVW deviation alignment mechanisms are both at the rear end of the base and connected with the lifting module. The lifting module comprises a side support. The upper end of the side support is provided with a lifting servo motor. The driving end of the lifting servo motor is connected with a lifting ball screw. The two sides of the half-UVW deviation alignment mechanism are both connected with a lifting plate. The outer side of the lifting plate is fixed with a lifting ball nut. The lifting ball screw is in threaded transmission connection with the lifting ball nut. The lifting plate slides on the side support along the vertical direction. The side support is provided with a lifting guide rail. The outer side of the lifting plate is fixed with a lifting slider. The lifting slider slides on the lifting guide rail.

[0006] As a preferred technical scheme, the plate feeding conveying rail comprises a plate feeding conveying belt and a clamping arm, the clamping arm is located below the plate feeding conveying belt, the clamping arm moves transversely on both sides of the plate feeding conveying belt, and a plate feeding laser detector is installed below the rear end of the plate feeding conveying belt.

[0007] As a preferred technical scheme, the plate feeding and discharging camera mechanism comprises a camera support, a broken piece camera and a plate discharging camera, the camera support spans the rotating disc mechanism, the broken piece camera is located above the plate feeding conveying rail, the plate discharging camera is located above the plate discharging conveying rail, and the broken piece camera and the plate discharging camera are both fixed to the upper end of the camera support.

[0008] As a preferred technical scheme, the rotating disc mechanism comprises a rotating shaft, a printing rotating disc, a paper roll unwinding shaft and a paper roll winding shaft, the rotating shaft is located on the base, the upper end of the rotating shaft is connected to the middle part of the printing rotating disc, the edge of the printing rotating disc is provided with six double half-piece printing stations, two double half-piece placing positions are arranged side by side on each double half-piece printing station, the paper roll unwinding shaft and the paper roll winding shaft are both rotated below the double half-piece printing station, and the vacuum table paper sent out by the paper roll unwinding shaft is wound back to the vacuum table paper winding shaft after passing through the upper surface of the double half-piece printing station.

[0009] As a preferred technical scheme, the half-piece UVW deviation correction and alignment mechanism comprises a screen mounting table and a scraper assembly, the front end of the screen mounting table is provided with a screen mounting cavity position, the two sides of the screen mounting table are provided with scraper moving tracks, and the scraper assembly slides on the scraper moving tracks in the front-rear direction.

[0010] As a preferred technical scheme, the scraper assembly comprises a scraper Z-axis motor, a scraper Z-axis guide rail, a main scraper, an ink scraper Z-axis motor, an ink scraper Z-axis guide rail and an ink return scraper, the driving end of the scraper Z-axis motor is connected with a scraper lead screw, the main scraper is fixed with a scraper nut seat, the scraper lead screw is in threaded transmission connection with the scraper nut seat, the main scraper slides on the scraper Z-axis guide rail in the vertical direction, the driving end of the ink scraper Z-axis motor is connected with an ink scraper lead screw, the ink return scraper is fixed with an ink scraper nut seat, the ink scraper lead screw is in threaded transmission connection with the ink scraper nut seat, and the ink return scraper slides on the ink scraper Z-axis guide rail in the vertical direction.

[0011] As a preferred technical scheme, the lower end of the half-plate UVW deviation correction and alignment mechanism is provided with two Y-axis modules and one X-axis module, the Y-axis module and the X-axis module each comprise a module base plate, a module motor, an adjusting screw rod and an adjusting sliding table, the driving end of the module motor is in transmission connection with the adjusting screw rod, the adjusting screw rod is in threaded connection with an adjusting nut below the adjusting sliding table, the adjusting sliding table slides along the length direction of the adjusting screw rod, the adjusting sliding table is provided with a connecting bearing, the connecting bearing slides on the adjusting sliding table, the moving direction of the connecting bearing is perpendicular to the moving direction of the adjusting sliding table, the edge of the steel mesh mounting table is locked in the connecting bearing, and two groups of the Y-axis modules and one group of the X-axis module jointly control the T-axis turning of one steel mesh mounting table.

[0012] As a preferred technical scheme, the out-plate conveying guide rail comprises an out-plate conveying belt and a fragment lifting cylinder, the fragment lifting cylinder is located below the out-plate conveying belt, and the driving end of the fragment lifting cylinder vertically extends upwards.

[0013] The six-station solar cell double-half-plate screen printing machine changes the mechanism control printing structure lifting on the existing equipment, adopts the spline, the ball screw, the synchronous wheel, the synchronous belt and the servo motor, utilizes the lifting modules on the two sides of the printing structure to jointly control the lifting, and improves the production and the production capacity. BRIEF DESCRIPTION OF DRAWINGS

[0014] The six-station solar cell double-half-plate screen printing machine changes the mechanism control printing structure lifting on the existing equipment, adopts the spline, the ball screw, the synchronous wheel, the synchronous belt and the servo motor, utilizes the lifting modules on the two sides of the printing structure to jointly control the lifting, and improves the production and the production capacity.

[0015] Figure 1 The six-station solar cell double-half-plate screen printing machine changes the mechanism control printing structure lifting on the existing equipment, adopts the spline, the ball screw, the synchronous wheel, the synchronous belt and the servo motor, utilizes the lifting modules on the two sides of the printing structure to jointly control the lifting, and improves the production and the production capacity.

[0016] Figure 2 The six-station solar cell double-half-plate screen printing machine changes the mechanism control printing structure lifting on the existing equipment, adopts the spline, the ball screw, the synchronous wheel, the synchronous belt and the servo motor, utilizes the lifting modules on the two sides of the printing structure to jointly control the lifting, and improves the production and the production capacity.

[0017] Figure 3 The six-station solar cell double-half-plate screen printing machine changes the mechanism control printing structure lifting on the existing equipment, adopts the spline, the ball screw, the synchronous wheel, the synchronous belt and the servo motor, utilizes the lifting modules on the two sides of the printing structure to jointly control the lifting, and improves the production and the production capacity.

[0018] Figure 4 The six-station solar cell double-half-plate screen printing machine changes the mechanism control printing structure lifting on the existing equipment, adopts the spline, the ball screw, the synchronous wheel, the synchronous belt and the servo motor, utilizes the lifting modules on the two sides of the printing structure to jointly control the lifting, and improves the production and the production capacity.

[0019] Figure 5 The six-station solar cell double-half-plate screen printing machine changes the mechanism control printing structure lifting on the existing equipment, adopts the spline, the ball screw, the synchronous wheel, the synchronous belt and the servo motor, utilizes the lifting modules on the two sides of the printing structure to jointly control the lifting, and improves the production and the production capacity.

[0020] Figure 6 The six-station solar cell double-half-plate screen printing machine changes the mechanism control printing structure lifting on the existing equipment, adopts the spline, the ball screw, the synchronous wheel, the synchronous belt and the servo motor, utilizes the lifting modules on the two sides of the printing structure to jointly control the lifting, and improves the production and the production capacity.

[0021] Figure 7The exploded view of the X-axis module described in the embodiment;

[0022] Figure 8 The partial structure view of the half-plate UVW correction and alignment mechanism described in the embodiment;

[0023] Figure 9 The structure schematic view of the lifting module described in the embodiment;

[0024] Figure 10 The internal structure view of the doctor blade assembly described in the embodiment;

[0025] Figure 11 The structure schematic view of the plate-out conveying rail described in the embodiment.

[0026] Figures 1 to 11 In the figure:

[0027] 1, plate-in conveying rail; 2, plate-in and plate-out camera mechanism; 3, rotating disc mechanism; 4, half-plate UVW correction and alignment mechanism; 5, lifting module; 6, plate-out conveying rail; 7, base;

[0028] 101, plate-in conveying belt; 102, clamping arm; 103, plate-in laser detector;

[0029] 201, camera support; 202, broken piece camera; 203, plate-out camera;

[0030] 301, rotating shaft; 302, printing rotating disc; 303, paper unwinding shaft; 304, paper winding shaft; 305, double half-plate placement position;

[0031] 401, screen mounting table; 402, doctor blade assembly; 403, screen mounting cavity position; 404, doctor blade moving track; 405, doctor blade Z-axis motor; 406, doctor blade Z-axis guide rail; 407, main doctor blade; 408, ink knife Z-axis motor; 409, ink knife Z-axis guide rail; 410, ink returning knife; 411, doctor blade screw rod; 412, Y-axis module; 413, X-axis module; 414, module bottom plate; 415, module motor; 416, adjusting screw rod; 417, adjusting sliding table; 418, connecting bearing;

[0032] 501, side support; 502, lifting servo motor; 503, lifting ball screw; 504, lifting plate; 505, lifting guide rail; 506, lifting sliding block;

[0033] 601, plate-out conveying belt; 602, broken piece lifting air cylinder. DETAILED DESCRIPTION

[0034] The technical scheme of the present application will be further described below in combination with the drawings and through specific embodiments.

[0035] AsFigures 1 to 11 As shown, in this embodiment, a six-station solar cell double-half-piece screen printing machine includes a base 7, an in-plate transport rail 1, an in-out plate camera mechanism 2, a turntable mechanism 3, two half-piece UVW rectification alignment mechanisms 4, and an out-plate transport rail 6. The in-plate transport rail 1 and the out-plate transport rail 6 are respectively located on both sides of the base 7, the turntable mechanism 3 is between the in-plate transport rail 1 and the out-plate transport rail 6, the in-out plate camera mechanism 2 is located above the turntable mechanism 3, six double-half-piece printing stations are arranged at equal intervals on the turntable mechanism 3, and the two half-piece UVW rectification alignment mechanisms 4 are both located at the rear end of the base 7.

[0036] The UVW rectification alignment mechanism is a high-precision moving structure specially designed for high-precision alignment equipment. It is also commonly known as an XXY platform. As a kind of three-axis parallel motion mechanism, it can realize rotation motion with any point on the plane as the center and translation in any direction (X, Y, θ three-axis motion in the plane) by controlling the parallel motion of three linear moving structures. The UVW rectification alignment mechanism cooperates with the in-out plate camera mechanism 2 described below to realize high-precision alignment function and can be applied in the printing industry.

[0037] More specifically, the implementation process of the UVW rectification alignment mechanism includes determining the conversion matrix from the camera coordinate system to the UVW platform coordinate system through a visual calibration method, and obtaining the x, y, θ offset between the marker template position and the marker to be rectified based on the coordinate value of the origin coordinate system of the UVW rectification alignment mechanism through the visual module (based on the origin coordinate system of the UVW rectification alignment mechanism). Then, according to the formula, input the initial coordinates of the three axes, set the rotation center as (0, 0), input the θ offset, and obtain the new coordinate values of the UVW three-axis, the new coordinates of the object to be rectified, and the corresponding feed amount of the three motors. This series of operations disassembles the motion process into translation and rotation parts, respectively calculates the motor feed amount, so as to realize accurate automatic positioning, and the alignment accuracy can reach microns.

[0038] The in-plate transport rail 1 is responsible for conveying the half-piece silicon wafer under the action of the double rail, entering the turntable mechanism 3 after detection by the in-out plate camera mechanism 2, moving two double-half-piece printing stations of the six double-half-piece printing stations of the turntable mechanism 3 to the rear of the base 7, printing two groups of double-half-piece silicon wafers by the two half-piece UVW rectification alignment mechanisms 4 without affecting each other, moving to the out-plate transport rail 6 under the driving of the turntable mechanism 3, and finally being discharged to the next working equipment after detection by the in-out plate camera mechanism 2.

[0039] The in-plate conveying rail 1 comprises an in-plate conveying belt 101 and a clamping arm 102, the clamping arm 102 is located below the in-plate conveying belt 101, the clamping arm 102 moves laterally on both sides of the in-plate conveying belt 101, the in-plate conveying belt 101 is provided with an in-plate laser detector 103 below the rear end, the in-plate conveying belt 101 is connected with the half silicon wafer at the front end, when the silicon wafer moves to the rear end of the in-plate conveying belt 101, the in-plate laser detector 103 detects the silicon wafer, and then the clamping arm 102 approaches the in-plate conveying belt 101 from the outside to position the silicon wafer.

[0040] The in-out plate camera mechanism 2 comprises a camera support 201, a broken piece camera 202 and an out-plate camera 203, the camera support 201 is located above the in-plate conveying rail 1, the out-plate camera 203 is located above the out-plate conveying rail 6, the broken piece camera 202 and the out-plate camera 203 are both fixed on the upper end of the camera support 201, the broken piece camera 202 detects the silicon wafer on the in-plate conveying belt 101, if it is a broken piece, it will not participate in the printing process and be directly transferred to the out-plate conveying rail 6 for discharge, if it is a normal silicon wafer, a signal will be provided, and the silicon wafer will be transferred to the rotating disc mechanism 3.

[0041] The rotating disc mechanism 3 comprises a rotating shaft 301, a printing rotating disc 302, a paper unwinding shaft 303 and a paper winding shaft 304, the rotating shaft 301 is located on the base 7, the upper end of the rotating shaft 301 is connected to the middle part of the printing rotating disc 302, the edge of the printing rotating disc 302 is provided with six double half piece printing stations, each double half piece printing station is provided with two double half piece placing positions 305, the paper unwinding shaft 303 and the paper winding shaft 304 are both located below the double half piece printing station, the vacuum table paper sent out by the paper unwinding shaft 303 is wound back to the vacuum table paper winding shaft after passing through the upper surface of the double half piece printing station, the silicon wafer moved from the front is placed on the two double half piece placing positions 305 of the double half piece printing station, when the two double half piece printing stations are full of silicon wafers, the rotating shaft 301 rotates to control the printing rotating disc 302 to transfer the two double half piece printing stations to the lower part of the two half piece UVW rectification and alignment mechanisms 4 for printing, after printing, the paper unwinding shaft 303 controls the vacuum table paper to be sent out to bring new double half pieces from the in-plate conveying rail 1 to the double half piece printing station, which plays a role in conveying the silicon wafer, at the same time, the vacuum table paper has air holes to adsorb the double half pieces in the double half piece printing station by negative pressure, and the paper winding shaft 304 winds the waste paper.

[0042] The lower end of the half UVW rectification alignment mechanism 4 is provided with two Y-axis modules 412 and an X-axis module 413. The Y-axis module 412 and the X-axis module 413 each include a module base plate 414, a module motor 415, an adjusting screw rod 416 and an adjusting sliding table 417. The driving end of the module motor 415 is in transmission connection with the adjusting screw rod 416. The adjusting screw rod 416 is in threaded connection with an adjusting nut below the adjusting sliding table 417. The adjusting sliding table 417 slides along the length direction of the adjusting screw rod 416. The adjusting sliding table 417 is provided with a connecting bearing 418. The connecting bearing 418 slides on the adjusting sliding table 417. The moving direction of the connecting bearing 418 is perpendicular to the moving direction of the adjusting sliding table 417. The edge of the steel mesh mounting table 401 is locked in the connecting bearing 418. The two Y-axis modules 412 and the X-axis module 413 together control the T-axis steering of the steel mesh mounting table 401. An auxiliary bearing is arranged on the steel mesh mounting table 401. An auxiliary X-axis sliding rail is arranged on the half UVW rectification alignment mechanism 4. An auxiliary X-axis sliding block slides on the auxiliary X-axis sliding rail. An auxiliary Y-axis sliding block is fixed on the auxiliary X-axis sliding block. The auxiliary Y-axis sliding block is in sliding connection with an auxiliary Y-axis sliding rail. The auxiliary bearing is arranged on the auxiliary Y-axis sliding rail. The two X-axis modules 413 and the Y-axis module 412 are used to adjust the T-axis of the steel mesh mounting table 401.

[0043] The lifting module 5 includes a side support 501. The upper end of the side support 501 is provided with a lifting servo motor 502. The driving end of the lifting servo motor 502 is connected with a lifting ball screw 503. The two sides of the half UVW rectification alignment mechanism 4 are connected with lifting plates 504. The outer side of the lifting plate 504 is fixed with a lifting ball nut. The lifting ball screw 503 is in threaded transmission connection with the lifting ball nut. The lifting plate 504 slides on the side support 501 in the vertical direction. The side support 501 is provided with a lifting guide rail 505. The outer side of the lifting plate 504 is fixed with a lifting sliding block 506. The lifting sliding block 506 slides on the lifting guide rail 505.

[0044] When the half UVW rectification alignment mechanism 4 is controlled to lift, the lifting servo motor 502 controls the lifting ball screw 503 to rotate. The lifting plate 504 with the lifting ball nut drives the half UVW rectification alignment mechanism 4 to move in the direction of the lifting guide rail 505. The precision is improved, and the moving speed is faster.

[0045] The half-plate UVW rectification alignment mechanism 4 comprises a steel mesh mounting table 401 and a squeegee assembly 402, the front end of the steel mesh mounting table 401 is provided with a steel mesh mounting cavity 403, both sides of the steel mesh mounting table 401 are provided with squeegee moving tracks 404, the squeegee assembly 402 slides on the squeegee moving tracks 404 in the front-rear direction, and the squeegee assembly 402 performs printing on the silicon plate when the rotating disc mechanism 3 moves the two groups of double halves to the lower side of the two groups of steel mesh mounting tables 401.

[0046] The squeegee assembly 402 comprises a squeegee Z-axis motor 405, a squeegee Z-axis guide rail 406, a main squeegee 407, an ink knife Z-axis motor 408, an ink knife Z-axis guide rail 409 and an ink knife 410, the driving end of the squeegee Z-axis motor 405 is connected with a squeegee lead screw 411, the main squeegee 407 is fixed with a squeegee nut seat, the squeegee lead screw 411 is in threaded transmission connection with the squeegee nut seat, the main squeegee 407 slides on the squeegee Z-axis guide rail 406 in the vertical direction, the driving end of the ink knife Z-axis motor 408 is connected with an ink knife lead screw, the ink knife 410 is fixed with an ink knife nut seat, the ink knife lead screw is in threaded transmission connection with the ink knife nut seat, and the ink knife 410 slides on the ink knife Z-axis guide rail 409 in the vertical direction, in the printing process, the squeegee Z-axis motor 405 controls the squeegee lead screw 411 to rotate, the main squeegee 407 moves downward along the squeegee Z-axis guide rail 406, the squeegee assembly 402 moves backward, after printing once, the main squeegee 407 is lifted, the ink knife Z-axis motor 408 controls the ink knife lead screw to rotate, the ink knife 410 moves downward along the ink knife Z-axis guide rail 409, the squeegee assembly 402 is pushed forward, the printing process is completed, and then the rotating disc mechanism 3 moves the two groups of double halves after printing to the plate-out conveying guide rail 6.

[0047] The plate-out conveying guide rail 6 comprises a plate-out conveying belt 601 and a broken piece jacking cylinder 602, the broken piece jacking cylinder 602 is located below the plate-out conveying belt 601, the driving end of the broken piece jacking cylinder 602 extends vertically upward, the silicon plate transferred from the rotating disc mechanism 3 moves on the plate-out conveying belt 601, the broken piece detected in front is lifted and discharged under the action of the broken piece jacking cylinder 602, and the normal silicon plate is continuously conveyed.

[0048] It should be noted that the above specific embodiments only serve as the preferred embodiments of the present application and the applied technical principles, and any changes or replacements easily thought of by those skilled in the art within the technical range disclosed by the present application should be covered in the protection range of the present application.

Claims

1. A six-station solar cell dual-tape screen printer characterized by, The base, the incoming plate transport guide rail, the incoming and outgoing plate camera mechanism, the rotating disc mechanism, two half-plate UVW correction and alignment mechanisms, the lifting module and the outgoing plate transport guide rail, the incoming plate transport guide rail and the outgoing plate transport guide rail are respectively located on both sides of the base, the rotating disc mechanism is between the incoming plate transport guide rail and the outgoing plate transport guide rail, the incoming and outgoing plate camera mechanism is located above the rotating disc mechanism, six double half-plate printing stations are arranged at equal intervals on the rotating disc mechanism, and the two half-plate UVW correction and alignment mechanisms are located at the rear end of the base and connected with the lifting module.

2. A six-station solar cell dual-tape screen printer according to claim 1, wherein, The incoming plate transport guide rail comprises an incoming plate transport belt and a clamping arm, the clamping arm is located below the incoming plate transport belt, the clamping arm moves transversely on both sides of the incoming plate transport belt, and an incoming plate laser detector is installed below the rear end of the incoming plate transport belt.

3. The six-station solar cell dual-tape tabbing screen printer of claim 1, wherein, The incoming and outgoing plate camera mechanism comprises a camera support, a broken piece camera and an outgoing plate camera, the camera support spans the rotating disc mechanism, the broken piece camera is located above the incoming plate transport guide rail, the outgoing plate camera is located above the outgoing plate transport guide rail, and the broken piece camera and the outgoing plate camera are fixed to the upper end of the camera support.

4. The six-station solar cell dual-tape tabbing screen printer of claim 1, wherein, The rotating disc mechanism comprises a rotating shaft, a printing rotating disc, a paper unwinding shaft and a paper winding shaft, the rotating shaft is on the base, the upper end of the rotating shaft is connected to the middle part of the printing rotating disc, the edge of the printing rotating disc is provided with six double half-plate printing stations, two double half-plate placing positions are arranged side by side on each double half-plate printing station, the paper unwinding shaft and the paper winding shaft rotate below the double half-plate printing station, and the vacuum table paper sent out by the paper unwinding shaft is wound back to the paper winding shaft after passing through the upper surface of the double half-plate printing station.

5. The six-station solar cell dual-tape tabbing screen printer of claim 1, wherein, The half-plate UVW correction and alignment mechanism comprises a steel mesh mounting table and a scraper assembly, the front end of the steel mesh mounting table is provided with a steel mesh mounting cavity, the two sides of the steel mesh mounting table are provided with scraper moving tracks, and the scraper assembly slides on the scraper moving tracks in the front-rear direction.

6. A six-station solar cell dual-tape screen printer according to claim 5, wherein, The scraper assembly includes a scraper Z-axis motor, a scraper Z-axis guide rail, a main scraper, an ink scraper Z-axis motor, an ink scraper Z-axis guide rail and an ink return scraper, the driving end of the scraper Z-axis motor is connected with a scraper lead screw, the main scraper is fixed with a scraper nut seat, the scraper lead screw is in threaded transmission connection with the scraper nut seat, the main scraper slides on the scraper Z-axis guide rail along the vertical direction, the driving end of the ink scraper Z-axis motor is connected with an ink scraper lead screw, the ink return scraper is fixed with an ink scraper nut seat, the ink scraper lead screw is in threaded transmission connection with the ink scraper nut seat, and the ink return scraper slides on the ink scraper Z-axis guide rail along the vertical direction.

7. A six-station solar cell dual-tape screen printer according to claim 5, wherein, The lower end of the half-plate UVW deviation correction alignment mechanism is provided with two Y-axis modules and an X-axis module, the Y-axis module and the X-axis module each include a module bottom plate, a module motor, an adjusting lead screw and an adjusting sliding table, the driving end of the module motor is in transmission connection with the adjusting lead screw, the adjusting lead screw is in threaded connection with an adjusting nut below the adjusting sliding table, the adjusting sliding table slides along the length direction of the adjusting lead screw, the adjusting sliding table is provided with a connecting bearing, the connecting bearing slides on the adjusting sliding table, the moving direction of the connecting bearing is perpendicular to the moving direction of the adjusting sliding table, the edge of the steel mesh mounting table is locked in the connecting bearing, and two groups of Y-axis modules plus one group of X-axis modules jointly control the T-axis turning of one steel mesh mounting table.

8. The six-station solar cell dual-tape tabbing screen printer of claim 1, wherein, The plate ejection conveying guide rail includes a plate ejection conveying belt and a fragment lifting cylinder, the fragment lifting cylinder is located below the plate ejection conveying belt, and the driving end of the fragment lifting cylinder extends vertically upward.

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