Printing method for a single-sheet digital printing press

Abstract

The present invention relates to the technical field of printing machines, and specifically to a printing method for a single-sheet thin paper digital printing machine, which includes the following steps: S1: Electrostatically treat the thin paper to enhance its stability and controllability during the printing process; S2: Stack the thin paper that has completed the anti-static treatment in the paper feeding device; S3: Use digital printing technology to perform precise printing according to the preset pattern or text; S4: Use an automatic paper collection device to collect the printed paper and perform sorting and stacking; S5: Perform subsequent processing such as cutting and folding on the printed matter as needed to meet different usage requirements. The beneficial effects of the present invention are: This printing method for a single-sheet thin paper digital printing machine can ensure that each time a single sheet of thin paper is fed onto the conveying module, guarantee the printing quality, avoid waste of thin paper, and, perform a flattening treatment on the thin paper to ensure the printing quality.

Description

Technical Field

[0001] The present invention relates to the technical field of printing presses, and specifically to a printing method for a single-sheet thin paper digital printing press. Background Art

[0002] A digital printing press is a type of printing press, also known as a universal flatbed printer or a flatbed printer. It has broken through the technical bottleneck of digital printing technology, achieving true printing starting from a single sheet, without the need for plate making, and completing full-color images at one time. It is a replacement product for traditional printing presses. The extremely low printing cost and high-quality printing effect are more economical and convenient than traditional printing systems. The minimal system investment, digital operation method, and limited space occupancy make the system have a greater market prospect. It is the best complement to traditional printing and a replacement product for traditional printing presses.

[0003] Publication No. CN104290467B discloses a printing method for a single-sheet thin paper digital printing press. When the existing single-sheet thin paper digital printing press is in use, it is necessary to place a single-sheet thin paper on a conveying module for conveying and complete the printing operation through a printing module. However, in actual use, the thin papers are prone to adhesion, so there may be multiple thin papers fed onto the conveying module, which not only affects the printing quality but also causes waste of thin papers. Moreover, the thin papers are prone to being uneven, which also affects the printing quality. Summary of the Invention

[0004] In view of the technical problems existing in the prior art, the present invention provides a printing method for a single-sheet thin paper digital printing press to solve the problems that when the existing single-sheet thin paper digital printing press is in use, it is necessary to place a single-sheet thin paper on a conveying module for conveying and complete the printing operation through a printing module. However, in actual use, the thin papers are prone to adhesion, so there may be multiple thin papers fed onto the conveying module, which not only affects the printing quality but also causes waste of thin papers. Moreover, the thin papers are prone to being uneven, which also affects the printing quality.

[0005] The technical solution for the present invention to solve the above technical problems is as follows: A printing method for a single-sheet thin paper digital printing press includes the following steps:

[0006] S1: Perform electrostatic treatment on the thin paper to enhance its stability and controllability during the printing process;

[0007] S2: Stack the thin paper that has completed the static elimination treatment in a paper feeding device;

[0008] S3: Adopt digital printing technology to perform precise printing according to a preset pattern or text;

[0009] S4: Use an automatic paper collecting device to collect the printed papers and perform sorting and stacking.

[0010] S5: Perform subsequent processes such as cutting and folding the printed matter as needed to meet different usage requirements.

[0011] Based on the above technical solutions, the present invention can be further improved as follows.

[0012] Further, the paper feeding device includes two symmetrically arranged connecting frames provided on the side wall of the printing press body, and a paper feeding box is fixedly connected between the two connecting frames. The printing press body includes a frame, a conveying module, and a printing module, and the connecting frames are fixedly connected to the side wall of the frame. A first suction hood is fixedly connected between the two connecting frames, and a plurality of first suction holes are arranged in an array at the top of the first suction hood. A first suction fan is fixedly connected to the bottom of the first suction hood. A bearing plate is connected to the inside of the paper feeding box through a telescopic mechanism, and thin paper is placed on the bearing plate. An L-shaped plate is fixedly connected to the side wall of the paper feeding box, and a moving plate is connected to the side wall of the L-shaped plate through a moving module. The bottom of the moving plate is connected to a first moving block through a lifting module, and a second suction hood is connected to the side wall of the first moving block through a first reset mechanism. A plurality of second suction holes are arranged in an array at the bottom of the second suction hood. A second suction fan is fixedly connected to the top of the second suction hood, and a pressing plate is inserted into the side wall of the paper feeding box. The pressing plate is connected to the side wall of the L-shaped plate through a second reset mechanism, and a plurality of balls are arranged at the bottom of the pressing plate. A flattening mechanism for flattening the thin paper adsorbed on the second suction hood is arranged on the side wall of the second suction hood, and the movement of the second suction hood is pushed by a first pushing mechanism.

[0013] The beneficial effect of adopting the above further solution is that it can ensure that one thin paper is fed onto the conveying module each time, guarantee the printing quality, avoid waste of thin paper, and, perform a flattening process on the thin paper to guarantee the printing quality.

[0014] Further, the telescopic mechanism includes two symmetrically arranged sleeves fixedly connected to the bottom of the paper feeding box, and a sleeve rod is inserted into the sleeve. The upper end of the sleeve rod is fixed to the bottom of the bearing plate, and a first spring is sleeved on the side wall of each sleeve.

[0015] The beneficial effect of adopting the above further solution is that when the thin paper on the bearing plate becomes less, under the action of the first spring, the bearing plate moves upward to ensure that the thin paper is clamped between the bearing plate and the second suction hood.

[0016] Further, the first reset mechanism includes two symmetrically arranged first T-shaped guide rods inserted into the side wall of the first moving block, and one end of each first T-shaped guide rod is fixedly connected to a second connecting block. The second connecting block is fixed to the top of the second suction hood, and a second spring is sleeved on the side wall of each first T-shaped guide rod.

[0017] The beneficial effect of adopting the above further solution is that it plays a guiding and resetting role in the movement of the second air suction hood.

[0018] Further, the first pushing mechanism includes a first L-shaped block fixedly connected to the top of the connecting frame, and a mounting plate is fixedly connected to the side wall of the first L-shaped block. A plurality of triangular blocks arranged in an array are fixedly connected to the side wall of the mounting plate, and a first pushing rod is fixedly connected to the side wall of the second air suction hood.

[0019] The beneficial effect of adopting the above further solution is that when the second air suction hood adsorbs the thin paper above the bearing plate and moves towards the conveying module, when the second air suction hood moves above the first air suction hood, when the end of the first pushing rod abuts against the side wall of the triangular block, it can push the second air suction hood to move. At the same time, the second spring is compressed. When the end of the first pushing rod crosses the side wall of the triangular block, the second air suction hood can move and reset under the action of the second spring. Repeating this way, the second air suction hood can move back and forth horizontally to form a shaking effect, so as to facilitate shaking off the adhered thin paper and adsorbing it on the first air suction hood.

[0020] Further, the second reset mechanism includes two symmetrically arranged second T-shaped guide rods inserted into the side wall of the L-shaped plate. One end of each second T-shaped guide rod is fixedly connected to the side wall of the pressing plate, and a third spring is sleeved on the side wall of each second T-shaped guide rod.

[0021] The beneficial effect of adopting the above further solution is that it plays a guiding and resetting role in the movement of the pressing plate.

[0022] Further, the flattening mechanism includes a second moving block, and the second moving block is connected to the side wall of the moving plate through a third reset mechanism. A scraper is fixedly connected to the side wall of the second moving block, and the movement of the second moving block is pushed by a second pushing mechanism.

[0023] The beneficial effect of adopting the above further solution is that when the second air suction hood adsorbs the thin paper and moves above the conveying module, the second pushing mechanism is used to push the second moving block and the scraper to move, so as to be able to flatten the thin paper adsorbed at the bottom of the second air suction hood.

[0024] Further, the third reset mechanism includes two symmetrically arranged third T-shaped guide rods fixedly connected to the side wall of the second moving block, and a third connecting block is sleeved on the side wall of each third T-shaped guide rod. The third connecting block is fixedly connected to the side wall of the moving plate, and a fourth spring is sleeved on the side wall of each third T-shaped guide rod.

[0025] The beneficial effect of adopting the above further solution is that it plays a guiding and resetting role in the movement of the second moving block and the scraper.

[0026] Further, the second pushing mechanism includes a second pushing rod fixedly connected to the side wall of the second moving block, and the top of the frame is fixedly connected with a second L-shaped block. A pushing plate is fixedly connected to the side wall of the second L-shaped block, and an inclined surface is arranged on the top of the pushing plate.

[0027] The beneficial effect of adopting the above further solution is that when the second air suction hood adsorbs the thin paper and moves above the conveying module, when the end of the second pushing rod abuts against the inclined surface, the second moving block and the scraper are pushed to move.

[0028] Further, a third L-shaped block is fixedly connected to the top of the second air suction hood, and a visual sensor is fixedly inserted at the bottom of the third L-shaped block.

[0029] The beneficial effect of adopting the above further solution is that the thin paper of the first air suction hood is detected by the visual sensor.

[0030] The beneficial effects of the present invention are as follows:

[0031] 1) By setting a telescopic mechanism, etc., when printing, the thin paper is placed on the bearing plate. Under the action of the first spring, the thin paper is clamped between the bearing plate and the second air suction hood. Then, the second exhaust fan is started, and air suction operation is carried out through the second air suction holes, so as to adsorb the upper thin paper. Then, through the moving module, the moving plate moves towards the direction close to the conveying module. At the same time, the pressing plate can gradually move to the top of the thin paper under the action of the third spring for limiting. At the same time, the second air suction holes abut against the top of the thin paper. When the adsorbed thin paper moves above the first air suction hood, the first exhaust fan is started, so that the first air suction holes carry out air suction operation. If the thin paper adheres, the lower thin paper can be peeled off in sequence and adsorbed on the first air suction hood in sequence. And the suction force of the second exhaust fan is greater, ensuring that only one thin paper can be adsorbed on the second air suction hood. When the thin paper on the second air suction hood is conveyed above the conveying module, the second air suction hood is moved downward through the lifting module. When the thin paper is close to the conveying module, the second exhaust fan is turned off and it can fall on the conveying module for conveying. Then, the second air suction hood is moved above the first air suction hood through the moving module and the lifting module, and detected by the visual sensor. When there is thin paper adsorbed on the first air suction hood, it can be adsorbed in sequence by the second air suction hood, and it can also ensure that only one thin paper is adsorbed each time. After there is no thin paper on the first air suction hood, the second air suction hood is moved above the bearing plate. When the second air suction hood abuts against the first moving block, the first moving block can be pushed to move. At the same time, the third spring is compressed. Then, continue to suck air from the bearing plate for the thin paper. In this way, it can be ensured that one thin paper is fed onto the conveying module each time, ensuring the printing quality and avoiding waste of thin paper.

[0032] 2), by setting the first reset mechanism and the first pushing mechanism, etc., when the second air suction hood adsorbs the thin paper above the bearing plate and moves towards the conveying module, when the second air suction hood moves above the first air suction hood, when the end of the first pushing rod abuts against the side wall of the triangular block, it can push the second air suction hood to move. At the same time, the second spring is compressed. When the end of the first pushing rod crosses the side wall of the triangular block, the second air suction hood can move and reset under the action of the second spring. In this way, the second air suction hood can move back and forth horizontally, forming a shaking effect, so as to facilitate the shaking off of the adhered thin paper and adsorb it on the first air suction hood.

[0033] 3), by setting the flattening mechanism, etc., when the second air suction hood adsorbs the thin paper and moves above the conveying module, when the end of the second pushing rod abuts against the inclined surface, it pushes the second moving block and the scraper to move. At the same time, the fourth spring is compressed, so as to be able to flatten the thin paper adsorbed on the bottom of the second air suction hood. Then, the moving module drives the second air suction hood to move a certain distance away from the pushing plate, so that the second pushing rod disengages from the inclined surface. At this time, the scraper can move and reset under the action of the fourth spring, and can flatten the thin paper again. Then, the lifting module drives the second air suction hood to move downward and place the thin paper on the conveying module for conveying, so as to ensure the printing quality and avoid waste of thin paper. Brief Description of the Drawings

[0034] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0035] Figure 2 is a partial cross-sectional structural schematic diagram of the paper supply box in the present invention;

[0036] Figure 3 is an overall structural schematic diagram of the second air suction hood and the pressing plate in the present invention;

[0037] Figure 4 is Figure 1 an enlarged structural schematic diagram of part A in

[0038] Figure 5 is Figure 2 an enlarged structural schematic diagram of part B in

[0039] Figure 6 is Figure 4 an enlarged structural schematic diagram of part C in

[0040] Figure 7 is Figure 5 an enlarged structural schematic diagram of part D in

[0041] In the drawings, the list of components represented by each reference numeral is as follows:

[0042] 1. Printing press body; 101. Frame; 102. Conveyor module; 103. Printing module; 201. Second moving block; 202. Squeegee; 301. Second connecting block; 302. First T-shaped guide rod; 303. Second spring; 401. First L-shaped block; 402. Mounting plate; 403. Triangular block; 404. First push rod; 501. Second push rod; 502. Second L-shaped block; 503. Push plate; 504. Inclined surface; 601. Third T-shaped guide rod; 602. Third connecting block; 603. Fourth spring; 701. Sleeve; 702. Sleeve rod; 703. First spring; 801. Second T-shaped guide rod; 802. Third spring; 9. Third L-shaped block; 10. Vision sensor; 11. Connecting frame; 12. First suction hood; 13. First suction hole; 14. First exhaust fan; 15. Paper feeder; 16. Carrier plate; 18. L-shaped plate; 19. Moving plate; 20. First moving block; 21. Second suction hood; 22. Second suction hole; 23. Pressure plate; 24. Ball; 25. Second exhaust fan; 26. Moving module; 27. Lifting module. Detailed implementation mode

[0043] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0044] Digital printing press is a type of printing press, also known as a universal flatbed printer or flatbed printer. It breaks through the bottleneck of digital printing technology and realizes true one-piece printing, no need for plate-making, and full-color images are completed at one time. It is a replacement product of traditional printing presses. The extremely low printing cost and high-quality printing effect are more economical and convenient than traditional printing systems. The minimal system investment, digital operation mode, and limited space occupation make the system have a greater market prospect. It is the best supplement to traditional printing and a replacement product of traditional printing presses.

[0045] After in-depth investigation and research on the printing process of digital printing presses, the inventor found that: Publication No. CN104290467B discloses a printing method for a single-sheet thin paper digital printing press. When the existing single-sheet thin paper digital printing press is in use, it is necessary to place a single-sheet thin paper on the conveyor module for conveying and complete the printing operation through the printing module. However, in actual use, the thin papers are prone to adhesion, so there may be multiple thin papers fed onto the conveyor module, which not only affects the printing quality but also causes waste of thin papers. Moreover, the thin papers are prone to unevenness, which also affects the printing quality. In response to this, the inventor proposed a printing method for a single-sheet thin paper digital printing press to solve the above problems.

[0046] The present invention provides the following preferred embodiments

[0047] AsFigures 1 - 7 As shown in the figure, a printing method for a single-sheet thin paper digital printing machine includes the following steps:

[0048] S1: Electrostatically treat the thin paper to enhance its stability and controllability during the printing process;

[0049] S2: Stack the thin paper after the static elimination treatment in the paper feeding device;

[0050] S3: Use digital printing technology to perform precise printing according to the preset pattern or text;

[0051] S4: Use an automatic paper collecting device to collect the printed paper and perform sorting and stacking;

[0052] S5: Perform subsequent processing such as cutting and folding on the printed matter as needed to meet different usage requirements.

[0053] In this embodiment, as Figure 2 shown, the paper feeding device includes two symmetrically arranged connecting frames 11 provided on the side wall of the printing machine body 1, and a paper feeding box 15 is fixedly connected between the two connecting frames 11. The printing machine body 1 includes a frame 101, a conveying module 102 and a printing module 103, and the connecting frame 11 is fixedly connected to the side wall of the frame 101. A first air suction hood 12 is fixedly connected between the two connecting frames 11, and a plurality of arrayed first air suction holes 13 are opened at the top of the first air suction hood 12. A first air extractor 14 is fixedly connected to the bottom of the first air suction hood 12. A bearing plate 16 is connected in the paper feeding box 15 through a telescopic mechanism, and the thin paper is placed on the bearing plate 16. An L-shaped plate 18 is fixedly connected to the side wall of the paper feeding box 15, and a moving plate 19 is connected to the side wall of the L-shaped plate 18 through a moving module 26. A first moving block 20 is connected to the bottom of the moving plate 19 through a lifting module 27, and a second air suction hood 21 is connected to the side wall of the first moving block 20 through a first reset mechanism 3. A plurality of arrayed second air suction holes 22 are opened at the bottom of the second air suction hood 21. A second air extractor 25 is fixedly connected to the top of the second air suction hood 21. A pressing plate 23 is inserted into the side wall of the paper feeding box 15, and the pressing plate 23 is connected to the side wall of the L-shaped plate 18 through a second reset mechanism. A plurality of balls 24 are provided at the bottom of the pressing plate 23. A flattening mechanism for flattening the thin paper adsorbed on the second air suction hood 21 is provided on the side wall of the second air suction hood 21, and the movement of the second air suction hood 21 is pushed by a first pushing mechanism, which can ensure that one sheet of thin paper is fed onto the conveying module 102 each time, ensure the printing quality, avoid waste of thin paper, and, perform a flattening treatment on the thin paper to ensure the printing quality.

[0054] In this embodiment, as Figure 5As shown in the figure, the telescopic mechanism includes two symmetrically arranged sleeves 701 fixedly connected to the bottom of the paper supply tray 15. A sleeve rod 702 is inserted into the sleeve 701. The upper end of the sleeve rod 702 is fixedly connected to the bottom of the bearing plate 16. A first spring 703 is sleeved on the side wall of each sleeve 701. When the thin paper on the bearing plate 16 becomes less, under the action of the first spring 703, the bearing plate 16 moves upward to ensure that the thin paper is clamped between the bearing plate 16 and the second air suction hood 21.

[0055] In this embodiment, as Figure 7 shown, the first reset mechanism includes two symmetrically arranged first T-shaped guide rods 302 inserted into the side wall of the first moving block 20. One end of the first T-shaped guide rod 302 is fixedly connected to a second connecting block 301. The second connecting block 301 is fixedly connected to the top of the second air suction hood 21. A second spring 303 is sleeved on the side wall of each first T-shaped guide rod 302, which plays a role in guiding and resetting the movement of the second air suction hood 21.

[0056] In this embodiment, as Figures 5 - 7 shown, the first pushing mechanism includes a first L-shaped block 401 fixedly connected to the top of the connecting frame 11. An installation plate 402 is fixedly connected to the side wall of the first L-shaped block 401. A plurality of triangular blocks 403 arranged in an array are fixedly connected to the side wall of the installation plate 402. A first push rod 404 is fixedly connected to the side wall of the second air suction hood 21. When the second air suction hood 21 adsorbs the thin paper from above the bearing plate 16 and moves in the direction close to the conveying module 102, when the second air suction hood 21 moves above the first air suction hood 12, when the end of the first push rod 404 abuts against the side wall of the triangular block 403, it can push the second air suction hood 21 to move. At the same time, the second spring 303 is compressed. When the end of the first push rod 404 passes over the side wall of the triangular block 403, the second air suction hood 21 can move and reset under the action of the second spring 303. Repeating this process can make the second air suction hood 21 move back and forth horizontally to form a shaking effect, so as to facilitate shaking off the adhered thin paper and adsorbing it on the first air suction hood 12.

[0057] In this embodiment, as Figure 5 shown, the second reset mechanism includes two symmetrically arranged second T-shaped guide rods 801 inserted into the side wall of the L-shaped plate 18. One end of the second T-shaped guide rod 801 is fixedly connected to the side wall of the pressing plate 23. A third spring 802 is sleeved on the side wall of each second T-shaped guide rod 801, which plays a role in guiding and resetting the movement of the pressing plate 23.

[0058] In this embodiment, as Figure 6As shown, the flattening mechanism includes a second moving block 201, and the second moving block 201 is connected to the side wall of the moving plate 19 through a third reset mechanism. A scraper 202 is fixedly connected to the side wall of the second moving block 201, and the movement of the second moving block 201 is pushed by a second pushing mechanism. When the second suction hood 21 adsorbs the thin paper and moves above the conveying module 102, the second moving block 201 and the scraper 202 are pushed by the second pushing mechanism to flatten the thin paper adsorbed at the bottom of the second suction hood 21.

[0059] In this embodiment, as Figure 5 and Figure 6 shown, the third reset mechanism includes two symmetrically arranged third T-shaped guide rods 601 fixedly connected to the side wall of the second moving block 201. A third connecting block 602 is sleeved on the side wall of the third T-shaped guide rod 601. The third connecting block 602 is fixed to the side wall of the moving plate 19, and a fourth spring 603 is sleeved on the side wall of each third T-shaped guide rod 601, which plays a role in guiding and resetting the movement of the second moving block 201 and the scraper 202.

[0060] In this embodiment, as Figure 4 and Figure 6 shown, the second pushing mechanism includes a second pushing rod 501 fixedly connected to the side wall of the second moving block 201. The top of the frame 101 is fixedly connected with a second L-shaped block 502. A pushing plate 503 is fixedly connected to the side wall of the second L-shaped block 502, and an inclined surface 504 is arranged on the top of the pushing plate 503. When the second suction hood 21 adsorbs the thin paper and moves above the conveying module 102, when the end of the second pushing rod 501 abuts against the inclined surface 504, the second moving block 201 and the scraper 202 are pushed to move.

[0061] In this embodiment, as Figure 7 shown, a third L-shaped block 9 is fixedly connected to the top of the second suction hood 21, and a vision sensor 10 is fixedly inserted at the bottom of the third L-shaped block 9 to detect the thin paper of the first suction hood 12 through the vision sensor 10.

[0062] The specific usage method steps of the present invention are as follows:

[0063] During use, first, when printing, place the thin paper on the carrier plate 16. Under the action of the first spring 703, the thin paper is clamped between the carrier plate 16 and the second air suction hood 21. Then, start the second exhaust fan 25 and perform an air suction operation through the second air suction holes 22, so as to be able to adsorb the upper thin paper. Next, make the moving plate 19 move in the direction close to the conveying module 102 through the moving module 26. At the same time, the pressing plate 23 can gradually move to the top of the thin paper for limiting under the action of the third spring 802. At the same time, the second air suction holes 22 are in contact with the top of the thin paper. When the thin paper to be adsorbed moves above the first air suction hood 12, start the first exhaust fan 14 to make the first air suction holes 13 perform an air suction operation. If the thin paper adheres, the lower thin paper can be peeled off in sequence and adsorbed on the first air suction hood 12 in sequence. And the suction force of the second exhaust fan 25 is greater to ensure that only one thin paper can be adsorbed on the second air suction hood 21;

[0064] Meanwhile, when the second air suction hood 21 adsorbs the thin paper from above the carrier plate 16 and moves in the direction close to the conveying module 102, when the second air suction hood 21 moves above the first air suction hood 12, when the end of the first push rod 404 abuts against the side wall of the triangular block 403, it can push the second air suction hood 21 to move. At the same time, the second spring 303 is compressed. When the end of the first push rod 404 passes over the side wall of the triangular block 403, the second air suction hood 21 can move back to its original position under the action of the second spring 303. In this way, the second air suction hood 21 can reciprocate horizontally to form a shaking effect, so as to facilitate shaking off the adhered thin paper and adsorbing it on the first air suction hood 12;

[0065] When the second air suction hood 21 adsorbs the thin paper and moves above the conveying module 102, when the end of the second push rod 501 abuts against the inclined surface 504, it pushes the second moving block 201 and the scraper 202 to move. At the same time, the fourth spring 603 is compressed, so as to be able to level the thin paper adsorbed on the bottom of the second air suction hood 21. Then, drive the second air suction hood 21 to move a certain distance in the direction away from the push plate 503 through the moving module 26, so that the second push rod 501 is separated from the inclined surface 504. At this time, the scraper 202 can move back to its original position under the action of the fourth spring 603 to level the thin paper again. Then, drive the second air suction hood 21 to move downward through the lifting module 27 and place the thin paper on the conveying module 102 for conveying, so as to ensure the printing quality and avoid waste of thin paper;

[0066] Next, the second air suction hood 21 is moved above the first air suction hood 12 by the moving module 26 and the lifting module 27, and detected by the vision sensor 10. When there is thin paper adsorbed on the first air suction hood 12, the second air suction hood 21 can adsorb it in sequence, and it can also ensure that only one piece of thin paper is adsorbed each time. After there is no thin paper on the first air suction hood 12, the second air suction hood 21 is moved above the bearing plate 16. When the second air suction hood 21 abuts against the first moving block 20, it can push the first moving block 20 to move. At the same time, the third spring 802 is compressed. Then, continue to suck air from the thin paper on the bearing plate 16. In this way, it can be ensured that one piece of thin paper is fed onto the conveying module 102 each time, ensuring the printing quality and avoiding waste of thin paper.

[0067] In summary, the beneficial effects of the present invention are specifically reflected in that it can ensure that one piece of thin paper is fed onto the conveying module 102 each time, ensuring the printing quality and avoiding waste of thin paper. Moreover, the thin paper is flattened to ensure the printing quality.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A printing method for a single-sheet digital printing press, characterized in that, It includes the following steps: S1: Electrostatically treat the thin paper to enhance its stability and controllability during the printing process; S2: Stack the thin paper after the static elimination treatment in the paper feeding device; S3: Adopt digital printing technology to perform precise printing according to the preset pattern or text; S4: Use an automatic paper receiving device to collect the printed paper and perform sorting and stacking; S5: Perform subsequent processing such as cutting and folding the printed matter as needed to meet different usage requirements; The paper feeding device includes two symmetrically arranged connecting frames (11) provided on the side wall of the printing machine body (1), and a paper feeding box (15) is fixedly connected between the two connecting frames (11). The printing machine body (1) includes a frame (101), a conveying module (102) and a printing module (103), and the connecting frame (11) is fixedly connected to the side wall of the frame (101). A first suction hood (12) is fixedly connected between the two connecting frames (11), and a plurality of first suction holes (13) are arranged in an array at the top of the first suction hood (12); A first suction fan (14) is fixedly connected to the bottom of the first suction hood (12). A bearing plate (16) is connected to the inside of the paper feeding box (15) through a telescopic mechanism, and the thin paper is placed on the bearing plate (16); The side wall of the paper supply box (15) is fixedly connected with an L-shaped plate (18), and the side wall of the L-shaped plate (18) is connected with a moving plate (19) through a moving module (26). The bottom of the moving plate (19) is connected with a first moving block (20) through a lifting module (27). The side wall of the first moving block (20) is connected with a second air suction hood (21) through a first reset mechanism (3). A plurality of second air suction holes (22) arranged in an array are formed at the bottom of the second air suction hood (21). The top of the second air suction hood (21) is fixedly connected with a second exhaust fan (25). A pressing plate (23) is inserted into the side wall of the paper supply box (15). The pressing plate (23) is connected with the side wall of the L-shaped plate (18) through a second reset mechanism. A plurality of balls (24) are arranged at the bottom of the pressing plate (23). A flattening mechanism for flattening the thin paper adsorbed on the second air suction hood (21) is arranged on the side wall of the second air suction hood (21). The movement of the second air suction hood (21) is pushed by a first pushing mechanism; The telescopic mechanism includes two symmetrically arranged sleeves (701) fixedly connected to the bottom of the paper supply box (15). A sleeve rod (702) is inserted into the sleeve (701). The upper end of the sleeve rod (702) is fixed to the bottom of the bearing plate (16). A first spring (703) is sleeved on the side wall of each sleeve (701); The first reset mechanism includes two symmetrically arranged first T-shaped guide rods (302) inserted into the side wall of the first moving block (20). One end of the first T-shaped guide rod (302) is fixedly connected with a second connecting block (301). The second connecting block (301) is fixed to the top of the second air suction hood (21). A second spring (303) is sleeved on the side wall of each first T-shaped guide rod (302); The first pushing mechanism includes a first L-shaped block (401) fixedly connected to the top of the connecting frame (11). An installation plate (402) is fixedly connected to the side wall of the first L-shaped block (401). A plurality of triangular blocks (403) arranged in an array are fixedly connected to the side wall of the installation plate (402). A first push rod (404) is fixedly connected to the side wall of the second air suction hood (21).

2. The printing method of a single-sheet thin paper digital printing press according to claim 1, characterized in that, The flattening mechanism includes a second moving block (201). The second moving block (201) is connected with the side wall of the moving plate (19) through a third reset mechanism. A scraping plate (202) is fixedly connected to the side wall of the second moving block (201). The movement of the second moving block (201) is pushed by a second pushing mechanism; The third reset mechanism includes two symmetrically arranged third T-shaped guide rods (601) fixedly connected to the side wall of the second moving block (201). A third connecting block (602) is sleeved on the side wall of the third T-shaped guide rod (601). The third connecting block (602) is fixed to the side wall of the moving plate (19). A fourth spring (603) is sleeved on the side wall of each third T-shaped guide rod (601).

3. The printing method of a single-sheet thin paper digital printing press according to claim 2, wherein, The second reset mechanism includes two symmetrically arranged second T-shaped guide rods (801) inserted into the side wall of the L-shaped plate (18). One end of each second T-shaped guide rod (801) is fixed to the side wall of the pressing plate (23), and a third spring (802) is sleeved on the side wall of each second T-shaped guide rod (801).

4. The printing method of a single-sheet thin paper digital printing press according to claim 3, characterized in that, The second pushing mechanism includes a second pushing rod (501) fixedly connected to the side wall of the second moving block (201). The top of the frame (101) is fixedly connected with a second L-shaped block (502). A pushing plate (503) is fixedly connected to the side wall of the second L-shaped block (502), and an inclined surface (504) is arranged at the top of the pushing plate (503).

5. A printing method of a single-sheet thin paper digital printing press according to claim 1, characterized in that, The top of the second air suction hood (21) is fixedly connected with a third L-shaped block (9), and a vision sensor (10) is fixedly inserted at the bottom of the third L-shaped block (9).

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