A silicon wafer high-efficiency screen printing device and its control system

Abstract

The present invention relates to the technical field of silicon wafer screen printing equipment, and specifically to a silicon wafer high-efficiency screen printing equipment and a control system thereof, comprising a screen printer, a loading structure, an outer frame, a linkage structure, a printing structure, a smearing structure, and a moving structure; the setting of the loading structure is convenient for driving the silicon wafer to rotate, and at the same time, the linkage structure is convenient for transferring the silicon wafer on the loading structure to a conveying component, the structure is simple, the transfer efficiency of the silicon wafer is improved, the distance between the printing structure and the silicon wafer is convenient to adjust, and the silicon wafer is convenient to be positioned by the printing structure in cooperation with the loading structure, so that the printing effect is better; the moving structure is provided with a smearing structure, and in the process of the moving structure driving the smearing structure to move, the scraper in the smearing structure can be automatically and alternately used, so that the structure is simple, the dependence on electrical components is small, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of silicon wafer screen printing equipment, in particular to a silicon wafer high-efficiency screen printing equipment and a control system thereof. Background Art

[0002] In the production process of crystalline silicon solar cells, the silicon wafers that have undergone texturing, high-temperature diffusion and etching need to be evenly transferred piece by piece so that the silicon wafers in the graphite boat can continue to be processed in the subsequent steps such as screen printing. During the screen printing process, two scrapers are used alternately to print the material on the silicon wafers.

[0003] However, although the alternating use of scrapers controlled by hydraulic cylinders or air cylinders has good stability, it is highly dependent on electrical components and has high costs. In order to improve printing efficiency, a turntable is used to drive the silicon wafer to alternately be at the bottom of the screen printing plate. A separate drive component is required to control the movement of the silicon wafer, resulting in a complex structure. At the same time, a separate fixing component is required to fix the silicon wafer to prevent the silicon wafer from shifting in position during the printing process. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a silicon wafer high-efficiency screen printing device and a control system thereof.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a high-efficiency screen printing device for silicon wafers, including a printing structure, a moving structure on the printing structure and a smearing structure on the moving structure, the smearing structure including a slide, the moving structure drives the slide to slide left and right, the slide is provided with two slidingly connected slide bars, a third spring is provided between the slide and the slide bar, the two slide bars are connected by a pull rope, a slidingly connected limit block is provided on the slide bar, a protrusion is provided on the limit block, a second spring is provided between the limit block and the slide bar, the slide is provided with a limit groove used in conjunction with the protrusion, two driving blocks with trapezoidal cross-sections are provided on the moving structure, and a scraper is fixed to the bottom end of the slide bar.

[0006] Specifically, the slide frame is provided with a reeling wheel, a pull rope is wound around the reeling wheel, and a slope is provided at a position of the slide bar close to the limit block.

[0007] Specifically, the movable structure includes a guide rail, the slide is slidingly connected to the guide rail, a second motor is fixed on the guide rail, a screw rod is connected to the output shaft of the second motor, the screw rod and the guide rail are rotationally connected, the screw rod and the slide are threadedly connected, and the drive block is fixed at both ends of the guide rail.

[0008] Specifically, the printing structure includes a sliding frame, the guide rail is fixed to the sliding frame, a screen printing frame is fixed to the bottom end of the sliding frame, the scraper slides left and right inside the screen printing frame, the sliding frame is slidably connected to the sliding sleeve, a second hydraulic cylinder is fixed on the sliding sleeve, the telescopic end of the second hydraulic cylinder is fixed to the sliding frame, the sliding sleeve is fixed to the outer frame, and the outer frame is fixed to the screen printing machine.

[0009] Specifically, the screen printing machine is provided with a loading structure, the loading structure includes a loading tray, the screen printing machine is rotatably provided with a loading tray, the loading tray is provided with four sets of conveyor belts, and the conveyor belts are wound around conveyor rollers on the loading tray.

[0010] Specifically, a connecting shaft is fixed to the bottom end of the loading tray, and the connecting shaft is fixed to the output shaft of the first motor, and the first motor is installed on the screen printing machine.

[0011] Specifically, the linkage structure includes a support frame, two slidably connected support frames are provided on the screen printing machine, a linkage roller is rotatably provided on the support frame, the bottom end of the support frame is slidably connected to a guide rod, the guide rod is fixed to the screen printing machine, and a first spring is provided between the support frame and the screen printing machine.

[0012] Specifically, four linkage rods are fixed to the bottom end of the loading tray, guide wheels are rotatably provided at the ends of the linkage rods, and a protrusion with a trapezoidal structure is provided at the bottom end of the support frame.

[0013] Specifically, a first hydraulic cylinder is fixed to the bottom end of the support frame, and the first hydraulic cylinder is fixed to the screen printing machine.

[0014] Specifically, a control system for a silicon wafer high-efficiency screen printing device includes a PLC controller, wherein the first motor, the second hydraulic cylinder and the second motor are electrically connected to the PLC controller, and the operation of the first motor, the second hydraulic cylinder and the second motor is controlled by the PLC controller.

[0015] The beneficial effects of the present invention are:

[0016] (1) The present invention discloses a silicon wafer high-efficiency screen printing device and a control system thereof. The screen printing machine is provided with a loading structure and a linkage structure. The loading structure is convenient for driving the silicon wafer to rotate. At the same time, the linkage structure is convenient for transferring the silicon wafer on the loading structure to the conveying assembly. The structure is simple and the transfer efficiency of the silicon wafer is improved.

[0017] (2) The present invention discloses a silicon wafer high-efficiency screen printing device and a control system thereof, wherein a printing structure is provided on an outer frame. The arrangement of the printing structure facilitates adjustment of the distance between the printing structure and the silicon wafer, and facilitates positioning of the silicon wafer by cooperating with the loading structure to achieve a better printing effect.

[0018] (3) The present invention discloses a silicon wafer high-efficiency screen printing device and a control system thereof, wherein a moving structure is provided on the printing structure, and a smearing structure is provided on the moving structure, so that when the moving structure drives the smearing structure to move, the scraper in the smearing structure is automatically and alternately used, thereby making the structure simple, less dependent on electrical components, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structural schematic diagram of the first embodiment and the second embodiment of a silicon wafer high-efficiency screen printing device provided by the present invention;

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0021] Figure 3 It is a schematic diagram of the connection structure between the printing structure and the smearing structure of the first embodiment and the second embodiment of the present invention;

[0022] Figure 4 for Figure 3 An enlarged schematic diagram of the structure of part B is shown;

[0023] Figure 5 for Figure 3 An enlarged schematic diagram of the C-section structure is shown;

[0024] Figure 6 It is a schematic diagram of the connection structure between the support frame and the linkage roller of the first embodiment of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the smearing structure of the first embodiment and the second embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of the connection structure between the slide bar and the slide frame according to the first embodiment and the second embodiment of the present invention;

[0027] Fig. 9 for Figure 8 An enlarged schematic diagram of the D-section structure is shown;

[0028] Fig.10 Schematic diagram of the connection structure between the slide bar and the inclined surface in the first embodiment and the second embodiment of the present invention;

[0029] Fig.11 A schematic diagram of the structure of the linkage structure of the second embodiment provided by the present invention;

[0030] Fig.12 The present invention provides a schematic diagram of the overall structure of a control system for a silicon wafer high-efficiency screen printing device.

[0031] In the figure: 1, screen printing machine; 2, material loading structure; 201, material loading plate; 202, conveyor belt; 203, connecting shaft; 204, first motor; 3, outer frame; 4, linkage structure; 401, linkage roller; 402, support frame; 403, linkage rod; 404, guide wheel; 405, first spring; 406, guide rod; 407, first hydraulic cylinder; 5, printing structure; 501, second hydraulic cylinder; 502, sliding sleeve; 5 03, slide frame; 504, screen printing frame; 6, coating structure; 601, slide; 602, drive block; 603, slide rod; 604, scraper; 605, take-up wheel; 606, pull rope; 607, limit block; 608, limit groove; 609, second spring; 610, inclined plane; 611, third spring; 7, moving structure; 701, second motor; 702, guide rail; 703, screw rod; 8, PLC controller. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Embodiment 1

[0033] like Figure 1-Figure 10 and Fig.12As shown, a silicon wafer high-efficiency screen printing device and a control system thereof proposed in Embodiment 1 of the present invention include a printing structure 5, a moving structure 7 on the printing structure 5, and a coating structure 6 on the moving structure 7, wherein the coating structure 6 includes a slide 601, wherein the moving structure 7 drives the slide 601 to slide left and right, wherein the slide 601 is provided with two slidingly connected slide bars 603, wherein a third spring 611 is provided between the slide 601 and the slide bar 603, wherein the two slide bars 603 are connected by a pull rope 606, wherein the slide bar 603 is provided with a slidingly connected limit block 607, wherein the limit block 607 is provided with a stop block 607. A protrusion is provided, a second spring 609 is provided between the limit block 607 and the slide bar 603, a limit groove 608 used in conjunction with the protrusion is provided on the slide 601, two driving blocks 602 with trapezoidal cross-sections are provided on the mobile structure 7, a scraper 604 is fixed to the bottom end of the slide bar 603, a reel 605 is provided on the slide 601, a pull rope 606 is wound around the reel 605, and an inclined surface 610 is provided on the slide bar 603 near the limit block 607; when the slide 601 slides to the left, a scraper 604 on the right slides with the screen plate on the screen printing frame 504, when After the slide 601 continues to slide to the left, the driving block 602 on the left enters from the hole on the left side of the slide 601, and the driving block 602 abuts against the limit block 607, causing the limit block 607 to abut against the second spring 609 for compression, so that the protrusion on the limit block 607 is not engaged with the limit groove 608. When the slide 601 continues to move to the left, the driving block 602 abuts against the inclined surface 610. Under the action of the inclined surface 610, the sliding bar 603 on the left slides downward. At the same time, the third spring 611 on the left abuts against the sliding bar 603 on the left to slide downward. The sliding bar 603 on the left drives the sliding bar 603 on the right to slide upward through the pull rope 606. When the right When the limit block 607 on the side is engaged with the limit groove 608 on the right, the slide bar 603 on the right is limited, and the slide bar 603 on the right is compressed by the third spring 611 on the right, so that the scraper 604 on the left is lower than the scraper 604 on the right, and then the scraper 604 on the left works during the movement of the slide 601 to the right, so that the scraper 604 is convenient to use alternately, and the structure is simple, the dependence on electrical components is small, and the production cost is low; at the same time, there is a third spring 611 between the slide bar 603 and the slide 601, which is a flexible connection to prevent the scraper 604 from being damaged by excessive resistance between the scraper 604 and the screen.

[0034] Specifically, the movable structure 7 includes a guide rail 702, the slide 601 is slidingly connected to the guide rail 702, a second motor 701 is fixed on the guide rail 702, a screw rod 703 is connected to the output shaft of the second motor 701, the screw rod 703 and the guide rail 702 are rotationally connected, the screw rod 703 and the slide 601 are threadedly connected, and the drive block 602 is fixed to both ends of the guide rail 702; the PLC controller 8 controls the second motor 701 to rotate, the second motor 701 drives the screw rod 703 and the guide rail 702 to rotate, and the screw rod 703 threadably drives the slide 601 to slide on the guide rail 702.

[0035] Specifically, the printing structure 5 includes a sliding frame 503, the guide rail 702 is fixed to the sliding frame 503, a screen printing frame 504 is fixed to the bottom end of the sliding frame 503, the scraper 604 slides left and right inside the screen printing frame 504, the sliding frame 503 is slidably connected to the sliding sleeve 502, a second hydraulic cylinder 501 is fixed on the sliding sleeve 502, the telescopic end of the second hydraulic cylinder 501 is fixed to the sliding frame 503, the sliding sleeve 502 is fixed to the outer frame 3, and the outer frame 3 is fixed to the screen printing machine 1.

[0036] Specifically, the screen printing machine 1 is provided with a loading structure 2, and the loading structure 2 includes a loading tray 201. The screen printing machine 1 is rotatably provided with a loading tray 201, and the loading tray 201 is provided with four groups of conveyor belts 202, and the conveyor belts 202 are wound around the conveyor rollers on the loading tray 201; when the silicon wafer is at the bottom end of the screen plate at the bottom end of the screen printing frame 504, the PLC controller 8 controls the second hydraulic cylinder 501 to extend, and the second hydraulic cylinder 501 drives the sliding frame 503 and the sliding sleeve 502 to slide, and the sliding frame 503 slides downward, so that the sliding frame 503 drives the screen printing frame 504 to contact with the silicon wafer, and the screen printing frame 504 cooperates with the conveyor belt 202 to fix the silicon wafer, prevent the silicon wafer from moving during printing, and improve the printing quality.

[0037] Specifically, a connecting shaft 203 is fixed to the bottom end of the loading tray 201, and the connecting shaft 203 is fixed to the output shaft of the first motor 204. The first motor 204 is installed on the screen printing machine 1. The linkage structure 4 includes a support frame 402. The screen printing machine 1 is provided with two slidably connected support frames 402. The support frame 402 is rotatably provided with a linkage roller 401. The bottom end of the support frame 402 is slidably connected to a guide rod 406. The guide rod 406 is fixed to the screen printing machine 1. A first spring 405 is in contact with the support frame 402 and the screen printing machine 1 to connect the external conveyor belt. The end of the outer frame 3 passes through the outer frame 3, and there are through holes on the left and right sides of the outer frame 3, which is convenient for installing the external conveyor belt. Then, the silicon wafer on the external conveyor belt corresponds to the conveyor belt 202 on the left side of the loading tray 201. At this time, since the linkage roller 401 is in conflict with the conveyor belt 202, the external conveyor belt drives the linkage roller 401 to rotate, and the linkage roller 401 drives the conveyor belt 202 to rotate clockwise, so that the silicon wafer is transferred to the conveyor belt 202, and then the PLC controller 8 controls the first motor 204 to rotate, and the first motor 204 drives the connecting shaft 203, so that the connecting shaft 203 drives the loading tray 201 to rotate ninety degrees clockwise, so that the silicon wafer is at the bottom of the screen plate.

[0038] Specifically, four linkage rods 403 are fixed to the bottom end of the loading tray 201, and the ends of the linkage rods 403 are rotatably provided with guide wheels 404, and the bottom end of the support frame 402 is provided with a protrusion of a trapezoidal structure; when the linkage structure 4 in the first embodiment is used, the loading tray 201 rotates to drive the linkage rods 403 to rotate, so that the guide wheels 404 on the linkage rods 403 do not conflict with the protrusions on the support frame 402, the first spring 405 conflicts with the support frame 402 to slide downward, and the support frame 402 slides with the guide rods 406, so that the linkage rollers The height of 401 is lowered to prevent the linkage roller 401 from affecting the rotation of the conveyor belt 202. There is also a gap between the external conveyor belt and the conveyor belt 202, which will not block the rotation of the conveyor belt 202 on the loading tray 201, thereby making the structure simpler and achieving better silicon wafer conveying effect. When the loading tray 201 rotates ninety degrees, another linkage rod 403 rotates to the bottom end of the support frame 402, so that the guide wheel 404 contacts the protrusion. Since the protrusion is trapezoidal, the support frame 402 slides upward, so that the linkage roller 401 contacts the conveyor belt 202.

[0039] Specifically, a control system of a silicon wafer high-efficiency screen printing device includes a PLC controller 8, and the first motor 204, the second hydraulic cylinder 501 and the second motor 701 are electrically connected to the PLC controller 8, and the operation of the first motor 204, the second hydraulic cylinder 501 and the second motor 701 is controlled by the PLC controller 8. Embodiment 2

[0040] like Figure 1-Figure 3 , Figure 5 and Figure 7-Figure 12 As shown, the high-efficiency screen printing equipment for silicon wafers and its control system proposed in the second embodiment are different from those in the first embodiment in that a first hydraulic cylinder 407 is fixed to the bottom end of the support frame 402, and the first hydraulic cylinder 407 is fixed to the screen printing machine 1; before the loading tray 201 rotates, the first hydraulic cylinder 407 contracts, the first spring 405 resists the support frame 402 to slide downward, the support frame 402 and the guide rod 406 slide, so that the height of the linkage roller 401 is lowered, thereby preventing the linkage roller 401 from affecting the rotation of the conveyor belt 202, and improving the conveying effect of the silicon wafers.

[0041] When the present invention is used, firstly, the end of the external conveyor belt is passed through the outer frame 3, and the outer frame 3 has through holes on both sides, which is convenient for installing the external conveyor belt. Then, after the silicon wafer on the external conveyor belt corresponds to the conveyor belt 202 on the left side of the material loading tray 201, at this time, because the linkage roller 401 is in conflict with the conveyor belt 202, the external conveyor belt drives the linkage roller 401 to rotate, and the linkage roller 401 drives the conveyor belt 202 to rotate clockwise, so that the silicon wafer is transferred to the conveyor belt 202, and then the PLC controller 8 controls the first motor 204 to rotate, and the first motor 204 drives the connecting shaft 203, so that the connecting shaft 203 drives the material loading tray 201 to rotate ninety degrees clockwise, so that the silicon wafer is at the bottom end of the screen plate;

[0042] When the silicon wafer is at the bottom of the screen plate at the bottom of the screen printing frame 504, the PLC controller 8 controls the second hydraulic cylinder 501 to extend, and the second hydraulic cylinder 501 drives the sliding frame 503 and the sliding sleeve 502 to slide, and the sliding frame 503 slides downward, so that the sliding frame 503 drives the screen printing frame 504 to contact the silicon wafer, and the screen printing frame 504 cooperates with the conveyor belt 202 to fix the silicon wafer, so as to prevent the silicon wafer from moving during the printing process, thereby improving the printing quality;

[0043] Then the PLC controller 8 controls the second motor 701 to rotate, and the second motor 701 drives the lead screw 703 and the guide rail 702 to rotate, and the lead screw 703 threadedly drives the slide 601 to slide on the guide rail 702. When the slide 601 slides to the left, a scraper 604 on the right slides with the screen plate on the screen printing frame 504. When the slide 601 continues to slide to the left, the driving block 602 on the left enters from the hole on the left side of the slide 601, and the driving block 602 hits the limit block 607, so that the limit block 607 hits the second spring 609 for compression, so that the protrusion on the limit block 607 is not engaged with the limit groove 608. When the slide 601 continues to move to the left, the driving block 602 hits the inclined surface 610, and the left slide bar 603 slides downward under the action of the inclined surface 610. At the same time, the left The third spring 611 of the left side pushes the sliding bar 603 to slide downward, and the sliding bar 603 on the left side drives the sliding bar 603 on the right side to slide upward through the pull rope 606. When the right limiting block 607 is engaged with the right limiting groove 608, the sliding bar 603 on the right side is limited, and the sliding bar 603 on the right side pushes the third spring 611 on the right side to compress, so that the scraper 604 on the left side is lower than the scraper 604 on the right side. Then, during the movement of the slide 601 to the right, the scraper 604 on the left side works, so that the scraper 604 is used alternately, which has a simple structure, is less dependent on electrical components, and has a low production cost. At the same time, there is a third spring 611 between the sliding bar 603 and the slide 601, which is a flexible connection to prevent the scraper 604 from being damaged by excessive resistance between the scraper 604 and the screen plate.

[0044] When the linkage structure 4 in the first embodiment is used, the loading plate 201 rotates to drive the linkage rod 403 to rotate, so that the guide wheel 404 on the linkage rod 403 does not conflict with the protrusion on the support frame 402, the first spring 405 conflicts with the support frame 402 to slide downward, the support frame 402 and the guide rod 406 slide, so that the height of the linkage roller 401 is reduced to prevent the linkage roller 401 from affecting the rotation of the conveyor belt 202, and there is also a gap between the external conveyor belt and the conveyor belt 202, which will not block the rotation of the conveyor belt 202 on the loading plate 201, thereby making the structure simpler and achieving better conveying effect of silicon wafers. When the loading plate 201 rotates ninety degrees, another linkage rod 403 rotates to the bottom end of the support frame 402, so that the guide wheel 404 conflicts with the protrusion. Since the protrusion is trapezoidal, the support frame 402 slides upward, so that the linkage roller 401 contacts the conveyor belt 202;

[0045] When the linkage structure 4 in Example 2 is used, before the loading plate 201 rotates, the first hydraulic cylinder 407 contracts, the first spring 405 resists the support frame 402 to slide downward, the support frame 402 and the guide rod 406 slide, so that the height of the linkage roller 401 is lowered, avoiding the linkage roller 401 from affecting the rotation of the conveyor belt 202, so as to improve the conveying effect of the silicon wafers.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A silicon wafer high-efficiency screen printing device, comprising a printing structure (5), a moving structure (7) on the printing structure (5), and a coating structure (6) on the moving structure (7), characterized in that: The smearing structure (6) comprises a slide frame (601), the moving structure (7) drives the slide frame (601) to slide left and right, the slide frame (601) is provided with two sliding rods (603) connected in a sliding manner, a third spring (611) is provided between the slide frame (601) and the sliding rod (603), the two sliding rods (603) are connected by a pull rope (606), a slidably connected limit block (607) is provided on the slide rod (603), a protrusion is provided on the limit block (607), and the limit block (607) A second spring (609) is provided between the slide (601) and the slide bar (603); a limit groove (608) used in conjunction with the protrusion is provided on the slide (601); two driving blocks (602) with trapezoidal cross-sections are provided on the moving structure (7); a scraper (604) is fixed to the bottom end of the slide bar (603); a reel (605) is provided on the slide (601), a pull rope (606) is wound around the reel (605); and a slope (610) is provided on the slide bar (603) near the limit block (607); The moving structure (7) comprises a guide rail (702), the slide (601) and the guide rail (702) are slidably connected, a second motor (701) is fixed on the guide rail (702), a lead screw (703) is connected to the output shaft of the second motor (701), the lead screw (703) and the guide rail (702) are rotationally connected, the lead screw (703) and the slide (601) are threadedly connected, and the driving block (602) is fixed to both ends of the guide rail (702); The printing structure (5) comprises a sliding frame (503), the guide rail (702) is fixed to the sliding frame (503), a screen printing frame (504) is fixed to the bottom end of the sliding frame (503), the scraper (604) slides left and right inside the screen printing frame (504), the sliding frame (503) is slidably connected to the sliding sleeve (502), a second hydraulic cylinder (501) is fixed to the sliding sleeve (502), a telescopic end of the second hydraulic cylinder (501) is fixed to the sliding frame (503), the sliding sleeve (502) is fixed to the outer frame (3), and the outer frame (3) is fixed to the screen printing machine (1); The screen printing machine (1) is provided with a material loading structure (2), the material loading structure (2) comprising a material loading tray (201), the screen printing machine (1) is rotatably provided with a material loading tray (201), the material loading tray (201) is provided with four groups of conveyor belts (202), the conveyor belts (202) are wound around conveyor rollers on the material loading tray (201); a connecting shaft (203) is fixed to the bottom end of the material loading tray (201), the connecting shaft (203) is fixed to the output shaft of a first motor (204), and the first motor (204) is installed on the screen printing machine (1); The screen printing machine (1) is provided with a linkage structure (4), the linkage structure (4) comprising a support frame (402), the screen printing machine (1) being provided with two slidably connected support frames (402), the support frames (402) being rotatably provided with linkage rollers (401), the bottom ends of the support frames (402) being slidably connected with guide rods (406), the guide rods (406) being fixed to the screen printing machine (1), and a first spring (405) being in contact with the screen printing machine (1); four linkage rods (403) being fixed to the bottom end of the loading tray (201), guide wheels (404) being rotatably provided at the ends of the linkage rods (403), and a protrusion of a trapezoidal structure being provided at the bottom end of the support frame (402).

2. The silicon wafer high-efficiency screen printing device according to claim 1, characterized in that: A first hydraulic cylinder (407) is fixed to the bottom end of the support frame (402), and the first hydraulic cylinder (407) is fixed to the screen printing machine (1).

3. The control system of a silicon wafer high-efficiency screen printing device according to claim 1, characterized in that: The first motor (204), the second hydraulic cylinder (501) and the second motor (701) are all electrically connected to a PLC controller (8), and the operation of the first motor (204), the second hydraulic cylinder (501) and the second motor (701) is controlled by the PLC controller (8).

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