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

Abstract

The invention 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 invention relates to the technical field of silicon wafer production, in particular to a six-station solar cell double half-wafer screen printing machine. Background Art

[0002] Photovoltaic solar silicon wafers are the core part of the solar power generation system and also the most valuable part of the solar power generation system. The function of the silicon wafer is to convert solar energy into electrical energy, which is stored by batteries or directly loaded for work. In existing printing machines, a spline structure is usually used to lift and lower the printing scraper part. The spline is installed at the lower end of the base, and the spline shaft, ball screw, synchronous wheel, synchronous belt and servo motor are connected to the structure of the printing scraper to control its lifting and lowering. The structure is complex and the lifting efficiency is low. Summary of the invention

[0003] One object of the present invention is to provide a six-station solar cell double half-cell screen printing machine, which uses a lifting module to replace the mechanism of splines, ball screws, synchronous wheels, synchronous belts and servo motors to control the lifting and lowering of the half-cell UVW correction and alignment mechanism, thereby improving printing capacity and efficiency.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A six-station solar cell double half-sheet screen printer comprises a base, a board-infeeding transport rail, a board-in-and-out camera mechanism, a turntable mechanism, two half-sheet UVW deviation correction and alignment mechanisms, a lifting module and a board-outfeeding transport rail, wherein the board-infeeding transport rail and the board-outfeeding transport rail are respectively located on both sides of the base, the turntable mechanism is located between the board-infeeding transport rail and the board-outfeeding transport rail, the board-in-and-out camera mechanism is located above the turntable mechanism, six double half-sheet printing stations are arranged at equal intervals on the turntable mechanism, and the two half-sheet UVW deviation correction and alignment mechanisms are both located at the rear end of the base and aligned with the turntable mechanism. The lifting module is connected; the lifting module includes a side bracket, a lifting servo motor is installed on the upper end of the side bracket, a lifting ball screw is connected to the driving end of the lifting servo motor, both sides of the half-piece UVW correction and alignment mechanism are connected to lifting plates, a lifting ball nut is fixed to the outer side of the lifting plate, the lifting ball screw is threadedly connected to the lifting ball nut, the lifting plate slides on the side bracket along the vertical direction, a lifting guide rail is installed on the side bracket, a lifting slider is fixed to the outer side of the lifting plate, and the lifting slider slides on the lifting guide rail.

[0006] As a preferred technical solution, the board feeding transport guide rail includes a board feeding transport belt and a clamping arm, the clamping arm is located below the board feeding transport belt, the clamping arm moves laterally on both sides of the board feeding transport belt, and a board feeding laser detector is installed below the rear end of the board feeding transport belt.

[0007] As a preferred technical solution, the board in and out camera mechanism includes a camera bracket, a fragment camera and a board out camera, the camera bracket spans the turntable mechanism, the fragment camera is located above the board in transport rail, the board out camera is located above the board out transport rail, and the fragment camera and the board out camera are both fixed at the upper end of the camera bracket.

[0008] As a preferred technical solution, the turntable mechanism includes a rotating shaft, a printing turntable, 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 of the printing turntable, six double-half-sheet printing stations are arranged on the edge of the printing turntable, and two double-half-sheet placement positions are arranged side by side on each of the double-half-sheet printing stations. The paper unwinding shaft and the paper winding shaft both rotate under the double-half-sheet printing station, and the vacuum table paper delivered by the paper unwinding shaft passes through the upper surface of the double-half-sheet printing station and then is rolled back onto the vacuum table paper winding shaft.

[0009] As a preferred technical solution, the half-sheet UVW correction and alignment mechanism includes a steel mesh mounting platform and a scraper assembly, a steel mesh mounting cavity is provided at the front end of the steel mesh mounting platform, scraper moving tracks are provided on both sides of the steel mesh mounting platform, and the scraper assembly slides on the scraper moving tracks along the front and rear directions.

[0010] As a preferred technical solution, the scraper assembly includes a scraper Z-axis motor, a scraper Z-axis guide rail, a main scraper, an ink cutter Z-axis motor, an ink cutter Z-axis guide rail and an ink return knife. The driving end of the scraper Z-axis motor is connected to a scraper screw, a scraper nut seat is fixed on the main scraper, the scraper screw is threadedly connected to 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 cutter Z-axis motor is connected to an ink cutter screw, an ink cutter nut seat is fixed on the ink return knife, the ink cutter screw is threadedly connected to the ink cutter nut seat, and the ink return knife slides on the ink cutter Z-axis guide rail along the vertical direction.

[0011] As a preferred technical solution, two Y-axis modules and one X-axis module are installed at the lower end of the half-piece UVW correction and alignment mechanism, and the Y-axis module and the X-axis module both include a module base plate, a module motor, an adjustment screw and an adjustment slide, the driving end of the module motor is transmission-connected to the adjustment screw, the adjustment screw is threadedly connected to the adjustment nut under the adjustment slide, the adjustment slide slides along the length direction of the adjustment screw, and the adjustment slide has a connecting bearing, the connecting bearing slides on the adjustment slide, the moving direction of the connecting bearing is perpendicular to the moving direction of the adjustment slide, the edge of the steel mesh mounting table is locked in the connecting bearing, and the two groups of Y-axis modules plus one group of X-axis modules jointly control the T-axis steering of a piece of the steel mesh mounting table.

[0012] As a preferred technical solution, the plate-out transport guide rail includes a plate-out transport belt and a fragment lifting cylinder, the fragment lifting cylinder is located below the plate-out transport belt, and the driving end of the fragment lifting cylinder extends vertically upward.

[0013] The beneficial effects of the present invention are as follows: a six-station solar cell double half-cell screen printing machine is provided, which changes the existing equipment which uses a spline, ball screw, synchronous wheel, synchronous belt and servo motor to control the lifting of the printing structure, and uses the lifting modules on both sides of the printing structure to jointly control the lifting, thereby improving production and increasing production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of a six-station solar cell double half-cell screen printing machine described in an embodiment;

[0016] Figure 2 It is a schematic diagram of the structure of the board feeding transport guide rail described in the embodiment;

[0017] Figure 3 It is a structural schematic diagram of the in-and-out board camera mechanism described in the embodiment;

[0018] Figure 4 It is a structural schematic diagram of the turntable mechanism described in the embodiment;

[0019] Figure 5 It is a structural schematic diagram of the half-sheet UVW deviation correction and alignment mechanism described in the embodiment;

[0020] Figure 6 An exploded view of the steel mesh installation platform described in the embodiment;

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

[0022] Figure 8 It is a partial structural diagram of the half-sheet UVW deviation correction and alignment mechanism described in the embodiment;

[0023] Fig. 9 It is a structural schematic diagram of the lifting module described in the embodiment;

[0024] Fig.10 It is a diagram of the internal structure of the scraper assembly described in the embodiment;

[0025] Fig.11 It is a schematic structural diagram of the board discharge transport guide rail described in the embodiment.

[0026] Figures 1 to 11 middle:

[0027] 1. Board inlet and outlet transport guide rail; 2. Board inlet and outlet camera mechanism; 3. Turntable mechanism; 4. Half-sheet UVW deviation correction and alignment mechanism; 5. Lifting module; 6. Board outlet transport guide rail; 7. Base;

[0028] 101. Board-infeed conveying belt; 102. Clip arm; 103. Board-infeed laser detector;

[0029] 201, camera bracket; 202, fragmentation camera; 203, board-out camera;

[0030] 301, rotating shaft; 302, printing turntable; 303, paper unwinding shaft; 304, paper rewinding shaft; 305, double half sheet placement position;

[0031] 401, steel mesh installation platform; 402, scraper assembly; 403, steel mesh installation cavity; 404, scraper moving track; 405, scraper Z-axis motor; 406, scraper Z-axis guide rail; 407, main scraper; 408, ink knife Z-axis motor; 409, ink knife Z-axis guide rail; 410, ink return knife; 411, scraper screw; 412, Y-axis module; 413, X-axis module; 414, module bottom plate; 415, module motor; 416, adjustment screw; 417, adjustment slide; 418, connecting bearing;

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

[0033] 601. Plate transport belt; 602. Fragment lifting cylinder. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] like Figures 1 to 11 As shown, in this embodiment, a six-station solar cell double half-cell screen printing machine includes a base 7, a board feed transport rail 1, a board feed and outlet camera mechanism 2, a turntable mechanism 3, two half-cell UVW correction and alignment mechanisms 4 and a board outlet transport rail 6. The board feed transport rail 1 and the board outlet transport rail 6 are respectively located on both sides of the base 7, the turntable mechanism 3 is between the board feed transport rail 1 and the board outlet transport rail 6, the board feed and outlet camera mechanism 2 is located above the turntable mechanism 3, six double half-cell printing stations are evenly spaced on the turntable mechanism 3, and the two half-cell UVW correction and alignment mechanisms 4 are both located at the rear end of the base 7.

[0036] The UVW deflection correction and alignment mechanism is a high-precision mobile structure specially designed for high-precision alignment equipment. It is also commonly called the XXY platform. As a three-axis parallel motion mechanism, it can realize rotational motion centered on any point on the plane and translation in any direction (X, Y, and θ three-axis motion in the plane) by controlling the parallel motion of three linear moving structures. The UVW deflection correction and alignment mechanism cooperates with the following in-and-out board camera mechanism 2 to achieve high-precision alignment function and can be used in the printing industry.

[0037] More specifically, the implementation process of the UVW correction and alignment mechanism includes determining the transformation matrix from the camera coordinate system to the UVW platform coordinate system through a visual calibration method, as well as the coordinate value of the marker template based on the origin coordinate system on the UVW correction and alignment mechanism, and obtaining the x, y, and θ offsets between the marker template position and the marker to be corrected (based on the origin coordinate system of the UVW correction and alignment mechanism) through a visual module. Then, the initial coordinates of the three axes are entered according to the formula, the rotation center is set to (0, 0), and the θ offset is entered to obtain new coordinate values ​​of the UVW three axes, the new coordinates of the object to be corrected, and the corresponding feed amounts of the three motors. This series of operations decomposes the motion process into translation and rotation parts, and calculates the motor feed amounts separately, thereby achieving precise automatic positioning, and the alignment accuracy can reach the micron level.

[0038] The board inlet transport rail 1 is responsible for transporting the half-wafer under the action of the double rails, and enters the turntable mechanism 3 after being detected by the board inlet and outlet camera mechanism 2. Two of the six double half-wafer printing stations of the turntable mechanism 3 move to the rear of the base 7, and the two half-wafer UVW correction and alignment mechanisms 4 print two groups of double half-wafers without affecting each other, and then move to the board outlet transport rail 6 driven by the turntable mechanism 3, and finally pass through the detection of the board inlet and outlet camera mechanism 2 and be discharged to the next working equipment.

[0039] The board feed transport guide rail 1 includes a board feed transport belt 101 and a clamping arm 102. The clamping arm 102 is located below the board feed transport belt 101. The clamping arm 102 moves laterally on both sides of the board feed transport belt 101. A board feed laser detector 103 is installed below the rear end of the board feed transport belt 101. The board feed transport belt 101 docks with the half silicon wafer at the front end. When it moves to the rear end of the board feed transport belt 101, the board feed laser detector 103 detects the silicon wafer, and then the clamping arm 102 approaches the board feed transport belt 101 from the outside to position the silicon wafer.

[0040] The in-and-out board camera mechanism 2 includes a camera bracket 201, a fragment camera 202 and an out-board camera 203. The camera bracket 201 spans the turntable mechanism 3, the fragment camera 202 is located above the in-board transport rail 1, and the out-board camera 203 is located above the out-board transport rail 6. The fragment camera 202 and the out-board camera 203 are both fixed at the upper end of the camera bracket 201. The fragment camera 202 detects fragments on the silicon wafers on the in-board transport belt 101. If they are fragments, they will not participate in the printing process and will be directly transferred to the out-board transport rail 6 for discharge. If they are normal silicon wafers, a signal will be provided and the silicon wafers will enter the turntable mechanism 3 for transportation.

[0041] The turntable mechanism 3 includes a rotating shaft 301, a printing turntable 302, a roll paper unwinding shaft 303 and a roll paper rewinding shaft 304. The rotating shaft 301 is on the base 7. The upper end of the rotating shaft 301 is connected to the middle of the printing turntable 302. Six double-half-sheet printing stations are arranged on the edge of the printing turntable 302. Two double-half-sheet placement positions 305 are arranged in parallel on each double-half-sheet printing station. The roll paper unwinding shaft 303 and the roll paper rewinding shaft 304 are both rotated below the double-half-sheet printing station. The vacuum table paper sent out by the roll paper unwinding shaft 303 passes through the upper surface of the double-half-sheet printing station and is rolled back onto the vacuum table paper rewinding shaft, and is transferred from the front. The incoming silicon wafers are placed on the two double half wafer placement positions 305 on the double half wafer printing station. When the two double half wafer printing stations are full of silicon wafers, the rotating shaft 301 rotates to control the printing turntable 302 to transfer the two double half wafer printing stations to the bottom of the two half wafer UVW correction and alignment mechanisms 4 for printing. After printing, the paper unwinding shaft 303 controls the vacuum table paper to send out, and brings the new double half wafer from the board feed transport guide rail 1 to the double half wafer printing station, which plays the role of conveying silicon wafers. At the same time, there are air holes on the vacuum table paper, which negatively adsorb the double half wafer in the double half wafer printing station, and then the waste paper is rolled up by the paper rewinding shaft 304.

[0042] The lower end of the half-sheet UVW deviation correction and alignment mechanism 4 is equipped with two Y-axis modules 412 and an X-axis module 413. The Y-axis module 412 and the X-axis module 413 both include a module base plate 414, a module motor 415, an adjustment screw 416 and an adjustment slide 417. The driving end of the module motor 415 is transmission-connected with the adjustment screw 416. The adjustment screw 416 is threadedly connected with the adjustment nut under the adjustment slide 417. The adjustment slide 417 slides along the length direction of the adjustment screw 416, and the adjustment slide 417 is provided with a connecting bearing 418, which slides on the adjustment slide 417. The moving direction of the connecting bearing 418 is consistent with that of the adjustment slide 417. The moving directions are perpendicular to each other, the edge of the steel mesh mounting platform 401 is locked in the connecting bearing 418, two groups of Y-axis modules 412 plus a group of X-axis modules 413 jointly control the T-axis steering of a steel mesh mounting platform 401, and an auxiliary bearing is arranged on the steel mesh mounting platform 401, and an auxiliary X-axis slide rail is arranged on the half-piece UVW correction and alignment mechanism 4, an auxiliary X-axis slider is slid on the auxiliary X-axis slide rail, an auxiliary Y-axis slider is fixed on the auxiliary X-axis slider, the auxiliary Y-axis slider is slidably connected with the auxiliary Y-axis slide rail, and the auxiliary bearing is installed on the auxiliary Y-axis slide rail, and the two groups of X-axis modules 413 plus the Y-axis module 412 are used to adjust the T-axis of the steel mesh mounting platform 401.

[0043] The lifting module 5 includes a side bracket 501, a lifting servo motor 502 is installed on the upper end of the side bracket 501, and a lifting ball screw 503 is connected to the driving end of the lifting servo motor 502. Lifting plates 504 are connected to both sides of the half-piece UVW correction and alignment mechanism 4. Lifting ball nuts are fixed to the outer side of the lifting plate 504. The lifting ball screw 503 is threadedly connected to the lifting ball nut. The lifting plate 504 slides on the side bracket 501 along the vertical direction. A lifting guide rail 505 is installed on the side bracket 501. A lifting slider 506 is fixed to the outer side of the lifting plate 504. The lifting slider 506 slides on the lifting guide rail 505.

[0044] When controlling the lifting of the half-piece UVW correction and alignment mechanism 4, the lifting servo motor 502 controls the rotation of the lifting ball screw 503, and the lifting plate 504 with the lifting ball nut drives the half-piece UVW correction and alignment mechanism 4 to move along the direction of the lifting guide rail 505, so the accuracy is improved and the moving speed is also faster.

[0045] The half-sheet UVW correction and alignment mechanism 4 includes a steel mesh mounting platform 401 and a scraper assembly 402. A steel mesh mounting cavity 403 is provided at the front end of the steel mesh mounting platform 401. Scraper moving rails 404 are provided on both sides of the steel mesh mounting platform 401. The scraper assembly 402 slides on the scraper moving rails 404 along the front and rear directions. When the turntable mechanism 3 moves the two groups of double half sheets to the bottom of the two groups of steel mesh mounting platforms 401, the scraper assembly 402 prints the silicon wafer along the scraper moving rails 404.

[0046] The scraper assembly 402 includes a scraper Z-axis motor 405, a scraper Z-axis guide rail 406, a main scraper 407, an ink knife Z-axis motor 408, an ink knife Z-axis guide rail 409 and an ink return knife 410. The driving end of the scraper Z-axis motor 405 is connected to a scraper screw 411, a scraper nut seat is fixed on the main scraper 407, and the scraper screw 411 is threadedly connected to the scraper nut seat. The main scraper 407 slides on the scraper Z-axis guide rail 406 along the vertical direction, the driving end of the ink knife Z-axis motor 408 is connected to the ink knife screw, and the ink return knife 410 is fixed with an ink knife nut seat. The ink knife screw and the ink knife The nut seat is threadedly connected, and the ink return knife 410 slides on the ink knife Z-axis guide 409 along the vertical direction. During the printing process, the scraper Z-axis motor 405 controls the scraper screw 411 to rotate, the main scraper 407 moves down along the scraper Z-axis guide 406, and the scraper assembly 402 moves backward. After printing once, the main scraper 407 is lifted, the ink knife Z-axis motor 408 controls the ink knife screw to rotate, the ink return knife 410 moves down along the ink knife Z-axis guide 409, and the scraper assembly 402 is pushed forward to complete the printing process, and then the turntable mechanism 3 moves the two groups of double half sheets that have been printed to the plate output transport guide 6.

[0047] The out-of-plate transport guide rail 6 includes an out-of-plate transport belt 601 and a fragment lifting cylinder 602. The fragment lifting cylinder 602 is located below the out-of-plate transport belt 601. The driving end of the fragment lifting cylinder 602 extends vertically upward. The silicon wafers transferred from the turntable mechanism 3 move on the out-of-plate transport belt 601. The fragments detected in the front are lifted up and discharged under the action of the fragment lifting cylinder 602, and the normal silicon wafers are kept for subsequent transportation.

[0048] It should be stated that the above-mentioned specific implementation methods are only preferred embodiments of the present invention and the technical principles used. Within the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by technicians familiar with this technical field should be included in the protection scope of the present invention.

Claims

1. A six-station solar cell double half-cell screen printing machine, characterized in that: It includes a base, a board-in-feed transport rail, a board-in-and-out-feed camera mechanism, a turntable mechanism, two half-sheet UVW deflection correction and alignment mechanisms, a lifting module and a board-out-feed transport rail. The board-in-feed transport rail and the board-out-feed transport rail are respectively located on both sides of the base, the turntable mechanism is located between the board-in-feed transport rail and the board-out-feed transport rail, the board-in-and-out-feed camera mechanism is located above the turntable mechanism, six double half-sheet printing stations are evenly spaced on the turntable mechanism, and the two half-sheet UVW deflection correction and alignment mechanisms are both located at the rear end of the base and connected to the lifting module; The lifting module includes a side bracket, a lifting servo motor is installed on the upper end of the side bracket, a lifting ball screw is connected to the driving end of the lifting servo motor, lifting plates are connected on both sides of the half-piece UVW correction and alignment mechanism, a lifting ball nut is fixed to the outer side of the lifting plate, the lifting ball screw is threadedly connected to the lifting ball nut, the lifting plate slides on the side bracket along the vertical direction, a lifting guide rail is installed on the side bracket, a lifting slider is fixed to the outer side of the lifting plate, and the lifting slider slides on the lifting guide rail.

2. A six-station solar cell double half-cell screen printing machine according to claim 1, characterized in that: The board feeding transport guide rail includes a board feeding transport belt and a clamping arm, wherein the clamping arm is located below the board feeding transport belt, and the clamping arm moves laterally on both sides of the board feeding transport belt. A board feeding laser detector is installed below the rear end of the board feeding transport belt.

3. The six-station solar cell double half-cell screen printing machine according to claim 1, characterized in that: The board in and out camera mechanism includes a camera bracket, a fragment camera and a board out camera. The camera bracket spans the turntable mechanism. The fragment camera is located above the board in transport rail. The board out camera is located above the board out transport rail. The fragment camera and the board out camera are both fixed to the upper end of the camera bracket.

4. The six-station solar cell double half-cell screen printing machine according to claim 1, characterized in that: The turntable mechanism includes a rotating shaft, a printing turntable, 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 of the printing turntable, six double-half-sheet printing stations are arranged on the edge of the printing turntable, and two double-half-sheet placement positions are arranged side by side on each of the double-half-sheet printing stations. The paper unwinding shaft and the paper winding shaft both rotate under the double-half-sheet printing station, and the vacuum table paper delivered by the paper unwinding shaft passes through the upper surface of the double-half-sheet printing station and is rolled back onto the vacuum table paper winding shaft.

5. The six-station solar cell double half-cell screen printing machine according to claim 1, characterized in that: The half-sheet UVW deviation correction and alignment mechanism includes a steel mesh mounting platform and a scraper assembly. A steel mesh mounting cavity is provided at the front end of the steel mesh mounting platform. Scraper moving tracks are provided on both sides of the steel mesh mounting platform. The scraper assembly slides on the scraper moving tracks along the front-rear direction.

6. The six-station solar cell double half-cell screen printing machine according to claim 5, characterized in that: The scraper assembly includes a scraper Z-axis motor, a scraper Z-axis guide rail, a main scraper, an ink cutter Z-axis motor, an ink cutter Z-axis guide rail and an ink return knife. The driving end of the scraper Z-axis motor is connected to a scraper screw, a scraper nut seat is fixed on the main scraper, the scraper screw is threadedly connected to 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 cutter Z-axis motor is connected to an ink cutter screw, an ink cutter nut seat is fixed on the ink return knife, the ink cutter screw is threadedly connected to the ink cutter nut seat, and the ink return knife slides on the ink cutter Z-axis guide rail along the vertical direction.

7. The six-station solar cell double half-cell screen printing machine according to claim 5, characterized in that: Two Y-axis modules and one X-axis module are installed at the lower end of the half-piece UVW correction and alignment mechanism. The Y-axis module and the X-axis module both include a module bottom plate, a module motor, an adjustment screw and an adjustment slide. The driving end of the module motor is transmission-connected to the adjustment screw, and the adjustment screw is threadedly connected to the adjustment nut under the adjustment slide. The adjustment slide slides along the length direction of the adjustment screw, and the adjustment slide is provided with a connecting bearing, which slides on the adjustment slide. The moving direction of the connecting bearing is perpendicular to the moving direction of the adjustment slide, and the edge of the steel mesh mounting table is locked in the connecting bearing. The two groups of Y-axis modules plus one group of X-axis modules jointly control the T-axis steering of a piece of the steel mesh mounting table.

8. The six-station solar cell double half-cell screen printing machine according to claim 1, characterized in that: The plate-out conveying guide rail comprises a plate-out conveying belt and a fragment lifting cylinder. The fragment lifting cylinder is located below the plate-out conveying belt, and a driving end of the fragment lifting cylinder extends vertically upward.

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