Accurate overprinting mechanism of photogravure press

Abstract

The utility model discloses an accurate overprinting mechanism of a photogravure press, which relates to the technical field of photogravure presses and comprises an overprinting mechanism main body, a first driving motor is detachably mounted on one side of the overprinting mechanism main body, a mounting shell is detachably mounted on the other side of the overprinting mechanism main body, and a first movable plate is detachably mounted on one side of the mounting shell. According to the precise overprinting mechanism of the photogravure press, the arranged pushing assembly pushes the supporting plate to drive the second movable plate to drive the impression cylinder to rotate with the output end of the first driving motor as the axis, the stress direction is changed, and compared with the mode that the impression cylinder is pushed vertically up and down on one side or two sides, the precise overprinting mechanism of the photogravure press is more horizontal, overprinting is more precise, and printing is not prone to dislocation; and the positions of the plate cylinder and the adjusting sleeve are fastened through the first jackscrew and the second jackscrew, the positions of the plate cylinder and the adjusting sleeve can be directly adjusted after the first jackscrew and the second jackscrew are loosened and tightened, compared with a screw rod, the adjusting efficiency is higher, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gravure printing machines, in particular to a precise overprinting mechanism of a gravure printing machine. Background Art

[0002] A gravure printing machine is a machine that uses a gravure plate for printing. Gravure printing refers to the printing plate in which the image and text part is concave, while the blank part is on the same plane as the outer circle of the plate cylinder. When the gravure printing machine is printing, the entire plate cylinder is inked, and the ink on the blank part of the plate is scraped off with a scraper, leaving the ink on the image and text part. The paper is then passed and the impression cylinder is used to emboss the back of the paper, so that the ink in the concave part is directly transferred to the paper surface. Finally, the printed matter is stacked or rewound through the paper collection part.

[0003] However, the existing gravure printing presses mostly use straight up and down pushing and rolling printing with the plate cylinder. The force on one side is uneven, and the pushing on both sides is not synchronized. Horizontal deviation is easy to occur between the impression cylinder and the plate cylinder, and printing is easy to be misplaced. The existing impression cylinder pushing device also mostly uses screw adjustment. When the adjustment height is too long, the screw adjustment efficiency is low, which affects the work efficiency. In order to solve the shortcomings of the existing technology, we propose a precise overprinting mechanism for gravure printing presses. Utility Model Content

[0004] The main purpose of the utility model is to provide a precise overprinting mechanism for a gravure printing machine, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The precise overprinting mechanism of the gravure printing machine comprises an overprinting mechanism main body, a first driving motor is detachably mounted on one side of the overprinting mechanism main body, a mounting shell is detachably mounted on the other side of the overprinting mechanism main body, a first movable plate is detachably mounted on one side of the mounting shell, a first pulley is rotatably connected to one side of the first movable plate, a second pulley is rotatably connected to one side of the first movable plate, a transmission belt is connected to the outer side of the second pulley, an impression roller is detachably mounted on one side of the second pulley, one end of the impression roller is rotatably connected to the second movable plate, a support plate is detachably mounted on one side of the second movable plate, a fixed plate is arranged on one side of the overprinting mechanism main body, one side of the fixed plate is rotatably connected to one side of the second movable plate, a pushing component is arranged on one side of the fixed plate, and the fixed plate is connected to the overprinting mechanism main body. An adjusting component is provided on one side of the mechanism body, a printing plate roller is provided between the two adjusting components, a second driving motor is detachably installed on one side of the overprinting mechanism body, the adjusting component includes a rotating column, one end of the rotating column is rotatably connected to one side of the fixed plate, a first threaded hole is opened on one side of the rotating column, and a first top screw is threadedly connected inside the first threaded hole opened on the rotating column, the pushing component includes a pushing cylinder, one side of the pushing cylinder is detachably installed on one side of the fixed plate, an adjusting rod is detachably installed on one end of the push rod of the pushing cylinder, an adjusting sleeve is movably sleeved on the outer side of one end of the adjusting rod, a push plate is detachably installed on one end of the adjusting sleeve, a second threaded hole is opened on one side of the adjusting sleeve, and a second top screw is threadedly connected inside the second threaded hole opened in the adjusting sleeve.

[0007] Preferably, the output end of the first drive motor is connected through the overprinting mechanism body and one side of the mounting shell, the output end of the first drive motor passes through one end of the mounting shell and is detachably mounted on one side of the first pulley, and the first pulley and the second pulley are connected via a transmission belt.

[0008] Preferably, the bottom of the push plate is provided with a rounded corner, one end of the push plate with the rounded corner abuts against the top of the support plate, and the bottom of the push cylinder is detachably mounted with an elastic rope, one end of the elastic rope is detachably mounted to the top of the support plate.

[0009] Preferably, a mounting hole is provided at one end of the rotating column, the interior of the mounting hole of the rotating column is slidably connected to the outer side of one end of the printing plate cylinder, a first cast iron sheet is detachably installed on the outer side of one end of the printing plate cylinder, and one side of the first cast iron sheet is abutted against one end of the first top wire.

[0010] Preferably, sliding grooves are provided on both symmetrical sides of the adjusting rod, and limiting blocks can be detachably installed on both symmetrical sides of the inner wall of the adjusting sleeve, and the outer side of the limiting block is slidably connected to the inside of the sliding groove provided on the adjusting rod.

[0011] Preferably, a second cast iron sheet is detachably mounted on one side of the adjusting rod, the outer side of the second cast iron sheet is slidably connected to the inside of the adjusting sleeve, and one side of the second cast iron sheet abuts against one end of the second top screw.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, the push assembly is set to push the support plate to drive the second movable plate to drive the impression roller to rotate with the output end of the first drive motor as the axis, thereby changing the force direction. Compared with pushing the impression roller straight up and down on one side or both sides, it is more horizontal, the overprinting is more accurate, and the printing is not easy to be misplaced.

[0015] 2. In the utility model, the printing plate cylinder and the adjusting sleeve position are fastened by the first and second top screws, and the printing plate cylinder and the adjusting sleeve position can be directly adjusted after loosening or tightening the first and second top screws, which has higher adjustment efficiency than screw rods and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall split structure of the utility model;

[0018] Figure 3 yes Figure 2 A magnified image of the middle A area;

[0019] Figure 4 It is a schematic diagram of the disassembly structure of the push assembly of the utility model.

[0020] In the figure: 1. main body of the overprinting mechanism; 2. first driving motor; 3. mounting shell; 4. first movable plate; 5. first pulley; 6. second pulley; 7. driving belt; 8. impression cylinder; 9. second movable plate; 10. support plate; 11. fixed plate; 12. pushing assembly; 13. adjusting assembly; 14. printing plate cylinder; 15. second driving motor; 16. rotating column; 17. first top screw; 18. pushing cylinder; 19. adjusting rod; 20. adjusting sleeve; 21. pushing plate; 22. second top screw; 23. limiting block; 24. first pig iron sheet; 25. second pig iron sheet; 26. elastic rope. DETAILED DESCRIPTION

[0021] 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 described below in conjunction with specific implementation methods.

[0022] like Figure 1-Figure 3As shown, the precise overprinting mechanism of the gravure printing machine includes an overprinting mechanism body 1. The staff starts the second drive motor 15 and the first drive motor 2. The output end of the second drive motor 15 rotates to drive the rotating column 16 to drive the plate cylinder 14 to rotate between the overprinting mechanism body 1 and the fixed plate 11. The output end of the first drive motor 2 rotates to drive the first pulley 5 through the transmission belt 7 to drive the second pulley 6 to drive the impression cylinder 8 to rotate. Then the pushing component 12 is started. The pushing component 12 pushes the support plate 10 to drive the second movable plate 9 to drive the impression cylinder 8 to rotate with the output end of the first drive motor 2 as the axis, until the impression cylinder 8 is pressed against the paper and rolls in contact with the plate cylinder 14 to complete printing. The impression cylinder 8 is rotated against the plate cylinder 14 with the output end of the first drive motor 2 as the axis. Compared with pushing the impression cylinder 8 straight up and down on both sides, it is more horizontal, the overprinting is more accurate, and the printing is not easy to be misplaced. After the equipment is used up, the pushing component 12 is closed. The elastic rope 26 drives the support plate 10 and the second movable plate 9 to rotate back to the original position under the action of its own elastic force, thereby completing a cycle of work.

[0023] like Figure 3 and Figure 4 As shown, the adjusting assembly 13 includes a rotating column 16, a first threaded hole is opened on one side of the rotating column 16, and a first top screw 17 is connected to the first threaded hole of the rotating column 16 through a thread. The pushing assembly 12 includes a pushing cylinder 18. The staff screws the first top screw 17 out of the first threaded hole of the rotating column 16, and then pulls the plate cylinder 14 to adjust the corresponding horizontal position of the plate cylinder 14 and the impression cylinder 8. After the adjustment is completed, the first top screw 17 is tightened, and the first top screw 17 is pressed against the first pig iron sheet 24 again to press one end of the plate cylinder 14 in the rotating column 16, and one end of the plate cylinder 14 is in the rotating column 16. The second top screw 22 is then screwed out of the second threaded hole of the adjusting sleeve 20 by the staff. When the paper becomes thicker, the adjusting sleeve 20 is pushed upward, and when the paper becomes thinner, the adjusting sleeve 20 is pushed downward. After the adjustment is completed, the second top screw 22 is screwed back. The second top screw 22 is again pressed against the second cast iron sheet 25 to press one end of the adjusting rod 19 in the adjusting sleeve 20. One end of the adjusting rod 19 no longer slides in the adjusting sleeve 20. Therefore, the printing plate cylinder 14 and the adjusting sleeve 20 are quickly adjusted by loosening or tightening the first top screw 17 and the second top screw 22. Compared with the screw adjustment, the efficiency is higher, thereby improving work efficiency.

[0024] How it works

[0025] It should be noted that the utility model is a precise overprinting mechanism for a gravure printing machine. When in use, the staff first screws the first top screw 17, and the first top screw 17 gradually withdraws from the first threaded hole of the rotating column 16. One end of the first top screw 17 no longer presses against the first pig iron sheet 24, and the printing plate cylinder 14 is pulled to adjust the lateral corresponding positions of the printing plate cylinder 14 and the impression cylinder 8. After the adjustment is completed, the first top screw 17 is tightened, and the first top screw 17 presses against the first pig iron sheet 24 again to press one end of the printing plate cylinder 14 in the rotating column 16. One end of the printing plate cylinder 14 no longer slides in the rotating column 16. After the lateral adjustment is completed, the staff screws the second top screw 22, and the second top screw 22 gradually presses the printing plate cylinder 14 in the rotating column 16. Gradually withdraw from the second threaded hole of the adjusting sleeve 20, one end of the second top screw 22 no longer presses against the second cast iron sheet 25, pull the adjusting sleeve 20 to slide on the adjusting rod 19, and adjust the position of the push plate 21 on the adjusting rod 19 according to the thickness of the paper to be printed. When the paper becomes thicker, the adjusting sleeve 20 is pushed upward, and when the paper becomes thinner, the adjusting sleeve 20 is pushed downward. After the adjustment is completed, screw back the second top screw 22, and the second top screw 22 presses against the second cast iron sheet 25 again to press one end of the adjusting rod 19 in the adjusting sleeve 20, and one end of the adjusting rod 19 no longer slides in the adjusting sleeve 20, thereby achieving the purpose of quickly adjusting the printing plate cylinder 14 and the adjusting sleeve 20 through the first top screw 17 and the second top screw 22.

[0026] After the equipment is preset, the second drive motor 15 and the first drive motor 2 are started. The output end of the second drive motor 15 rotates to drive the rotating column 16 to drive the plate cylinder 14 to rotate between the overprinting mechanism body 1 and the fixed plate 11. The output end of the first drive motor 2 rotates to drive the first pulley 5 to rotate. The first pulley 5 drives the second pulley 6 to drive the impression cylinder 8 to rotate through the transmission belt 7. Then the pushing cylinder 18 is started. The push rod of the pushing cylinder 18 pushes the adjusting rod 19 to drive the adjusting sleeve 20 to drive the pushing plate 21 to push the support plate 10. The support plate 10 drives the second movable plate 9 to drive the impression cylinder 8 to rotate with the output end of the first drive motor 2 as the axis until the impression cylinder 8 rolls against the paper and contacts the plate cylinder 14 to complete printing. The impression cylinder 8 is rotated against the plate cylinder 14 with the output end of the first drive motor 2 as the axis. Compared with pushing the impression cylinder 8 straight up and down on both sides, it is more horizontal, the overprinting is more accurate, and the printing is not easy to be misplaced.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A precise overprinting mechanism for a gravure printing machine, comprising an overprinting mechanism body (1), characterized in that: A first driving motor (2) is detachably mounted on one side of the overprinting mechanism body (1); a mounting shell (3) is detachably mounted on the other side of the overprinting mechanism body (1); a first movable plate (4) is detachably mounted on one side of the mounting shell (3); a first belt pulley (5) is rotatably connected to one side of the first movable plate (4); a second belt pulley (6) is rotatably connected to one side of the first movable plate (4); a transmission belt (7) is connected to the outer side of the second belt pulley (6); an impression roller (8) is detachably mounted on one side of the second belt pulley (6); one end of the impression roller (8) is rotatably connected to a second movable plate (9); a support plate (10) is detachably mounted on one side of the second movable plate (9); a fixed plate (11) is provided on one side of the overprinting mechanism body (1); one side of the fixed plate (11) is rotatably connected to one side of the second movable plate (9); a pushing component (12) is provided on one side of the fixed plate (11); and an adjustment component (13) is provided on one side of both the fixed plate (11) and the overprinting mechanism body (1). A printing plate cylinder (14) is arranged between the two adjusting components (13); a second driving motor (15) is detachably mounted on one side of the overprinting mechanism body (1); the adjusting component (13) comprises a rotating column (16); one end of the rotating column (16) is rotatably connected to one side of the fixed plate (11); a first threaded hole is provided on one side of the rotating column (16); a first top screw (17) is threadedly connected inside the first threaded hole provided on the rotating column (16); the pushing component (12) comprises a pushing A cylinder (18), one side of the pushing cylinder (18) and one side of the fixing plate (11) are detachably mounted, one end of the push rod of the pushing cylinder (18) is detachably mounted with an adjusting rod (19), one end of the adjusting rod (19) is movably sleeved with an adjusting sleeve (20), one end of the adjusting sleeve (20) is detachably mounted with a pushing plate (21), one side of the adjusting sleeve (20) is provided with a second threaded hole, and the second threaded hole provided in the adjusting sleeve (20) is internally threadedly connected with a second top screw (22).

2. The precise overprinting mechanism of the gravure printing machine according to claim 1, characterized in that: The output end of the first drive motor (2) is connected through the overprinting mechanism body (1) and one side of the mounting shell (3); the output end of the first drive motor (2) is connected through one end of the mounting shell (3) and is detachably mounted on one side of the first pulley (5); the first pulley (5) and the second pulley (6) are connected in transmission via a transmission belt (7).

3. The precise overprinting mechanism of the gravure printing machine according to claim 1, characterized in that: The push plate (21) has a rounded corner at the bottom, and one end of the push plate (21) with the rounded corner abuts against the top of the support plate (10). An elastic rope (26) is detachably mounted on the bottom of the push cylinder (18), and one end of the elastic rope (26) is detachably mounted on the top of the support plate (10).

4. The precise overprinting mechanism of the gravure printing machine according to claim 1, characterized in that: A mounting hole is provided at one end of the rotating column (16), the interior of the mounting hole provided in the rotating column (16) is slidably connected to the outer side of one end of the printing plate cylinder (14), a first pig iron sheet (24) is detachably mounted on the outer side of one end of the printing plate cylinder (14), one side of the first pig iron sheet (24) is in contact with one end of the first top screw (17).

5. The precise overprinting mechanism of the gravure printing machine according to claim 1, characterized in that: The adjusting rod (19) is provided with sliding grooves on both symmetrical sides, and the limiting blocks (23) can be detachably installed on both symmetrical sides of the inner wall of the adjusting sleeve (20), and the outer side of the limiting block (23) is slidably connected to the inside of the sliding groove provided on the adjusting rod (19).

6. The precise overprinting mechanism of the gravure printing machine according to claim 1, characterized in that: A second cast iron sheet (25) is detachably mounted on one side of the adjustment rod (19); the outer side of the second cast iron sheet (25) is slidably connected to the inside of the adjustment sleeve (20); and one side of the second cast iron sheet (25) abuts against one end of the second top screw (22).

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