Double-sided single-color water dampening offset press based on brush roller water supply quantity adjustment

Abstract

The utility model relates to the technical field of offset presses, in particular to a double-sided single-color water dampening offset press based on brush roller water supply quantity adjustment, which comprises a rack, a front paper conveying cylinder is arranged in the rack, and a lower impression cylinder is arranged at the lower end of the front paper conveying cylinder. A lower blanket cylinder and a lower plate cylinder are sequentially arranged below the lower impression cylinder, a middle paper conveying cylinder is arranged on one side of the lower impression cylinder, an upper impression cylinder is arranged on one side of the middle paper conveying cylinder, and a conveying belt is connected to the lower portion of the upper impression cylinder. An upper blanket cylinder and an upper plate cylinder are sequentially arranged above the upper impression cylinder, an ink distributing system used for inking paper is arranged above the upper plate cylinder, a water supply assembly used for adjusting the wettability in the rack is arranged on one side of the upper plate cylinder, and the mounting plate is driven by a driving part to move. And the gap between the scraper and the brush roller starts to change, so that the water supply amount of the brush roller is adjusted, and the printing effect is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of offset printing machines, in particular to a double-sided single-color water-based offset printing machine based on the regulation of the water supply amount of a brush roller. Background Technique

[0002] The double-sided single-color water-based offset printing machine is an important printing device. First of all, in view of the possible problems existing in the traditional offset printing machine during the printing process, such as unstable printing quality and complex operation, the double-sided single-color water-based offset printing machine has been greatly improved technically. For example, through the optimization of the ink path system, multiple form rollers and dampening rollers are adopted, significantly improving the printing quality of the product. At the same time, the application of a new type of plate clamping device and the plate positioning method with fixed positioning pins effectively shortens the plate mounting time and improves the work efficiency.

[0003] Chinese Patent CN109866498A discloses a double-sided single-color water-based offset printing machine with adjustable humidity, including a frame, a conveyor belt, an ink distribution system, a front paper transfer cylinder, a lower impression cylinder, a lower blanket cylinder, and a lower plate cylinder. By rotating the handle, the handle drives the winding shaft coaxially connected to it to rotate, so that the winding shaft drives the connecting line to wind, and then the connecting line pulls the connecting block and the connecting shaft upward, achieving the effect of adjusting the height of the scraper coaxially connected to the connecting shaft, and engaging the limiting block on the handle with the limiting hole on the frame, so that the distance between the scraper and the brush roller is adjusted, and then the work of adjusting the water amount ejected from the contact between the brush roller and the inside of the water tank is completed, so that the humidity of the entire offset printing machine can be well adjusted during use.

[0004] When the above-mentioned utility model is in use, since the connecting line drives the connecting block and the connecting shaft to be pulled upward, so as to drive the scraper to move. When the brush roller rotates, through the connection of the wire body, it will have a certain impact on the scraper through the connecting line, making the scraper unstable, and when used for a long time, the scraper may be worn. The worn scraper will not only affect its adjustment effect, but also may cause unstable water supply. Summary of the Utility Model

[0005] Aiming at the above problems, a double-sided single-color water-based offset printing machine based on the regulation of the water supply amount of a brush roller is provided, and the technical problem that the water supply amount of the brush roller cannot be adjusted is solved by a movable scraper.

[0006] To solve the problems of the prior art, the utility model provides a double-sided single-color water-based offset printing machine based on the regulation of the water supply amount of a brush roller, which includes a frame. A front paper transfer roller is arranged inside the frame. A lower impression cylinder is arranged at the lower end of the front paper transfer roller. A lower blanket cylinder and a lower plate cylinder are successively arranged below the lower impression cylinder. A middle paper transfer roller is arranged on one side of the lower impression cylinder. An upper impression cylinder is arranged on one side of the middle paper transfer roller. A conveyor belt is connected below the upper impression cylinder. An upper blanket cylinder and an upper plate cylinder are successively arranged above the upper impression cylinder. An inking system for inking the paper is arranged above the upper plate cylinder. A water supply assembly for regulating the humidity inside the frame is arranged on one side of the upper plate cylinder.

[0007] Preferably, the water supply assembly includes a dampening roller, a water distributing roller, a water leveling roller, a brush roller, a water tank, a squeegee and a mounting plate. The dampening roller is arranged on one side of the upper plate cylinder. The water distributing roller is arranged on the side of the dampening roller away from the upper plate cylinder. The water leveling roller is arranged on one side of the water distributing roller. The brush roller is arranged on one side of the water leveling roller. The water tank is installed below the brush roller. The squeegee is arranged directly above the brush roller. The mounting plate is installed above the squeegee. The squeegee is snap-connected to the mounting plate. The mounting plate is slidably connected inside the frame. A driving component for driving the mounting plate to move up and down is arranged above the mounting plate.

[0008] Preferably, the driving component includes a rack, a fixing plate, a rotating rod, a gear, a turntable and a sliding rod. The rack is installed on the mounting plate. The fixing plate is arranged directly above the mounting plate. Both sides of the fixing plate are fixedly connected to the inner wall of the frame. A through hole for the rack to move is opened on the fixing plate. The rotating rod is installed on one side of the rack. One end of the rotating rod extends out of the frame. The gear is installed on the outer surface of the rotating rod. The turntable is arranged at the extending end of the rotating rod. The sliding rod is installed on the mounting plate and is located inside the two groups of racks.

[0009] Preferably, a second spring that abuts against the fixing plate is sleeved on the sliding rod. The other end of the second spring is fixedly connected to the mounting plate.

[0010] Preferably, a plug rod passes through the turntable. A limiting hole that matches the plug rod is arranged on the frame.

[0011] Preferably, a cavity is arranged inside the mounting plate. A fixing rod is arranged inside the cavity. One end of the fixing rod is provided with an abutting portion that can abut against the squeegee. The other end of the fixing rod is provided with a pull handle. A limiting plate is installed on the fixing rod. The limiting plate abuts against the inner wall of the cavity. A first spring that abuts against the limiting plate is sleeved on the fixing rod. The other end of the first spring is fixedly connected to the inner wall of the cavity.

[0012] Preferably, a fixing hole which can be inserted and matched with the abutting part is arranged on the scraper.

[0013] Preferably, a rubber pad is arranged at the bottom of the frame.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows:

[0015] 1. By driving the driving component to drive the mounting plate to move, and then driving the scraper to move by the mounting plate, the gap size between the scraper and the brush roller begins to change, thereby affecting the amount of water absorbed by the brush roller from the water tank. Since the amount of water on the water application roller changes with the amount of water ejected by the brush roller, the adjustment of the water supply amount to the brush roller is achieved. According to the adjustment of the water supply amount to the brush roller, the humidity during the use of the frame can be adjusted to prevent affecting the printing effect;

[0016] 2. By pulling the pull handles on both sides, the fixed rod is driven to move by the pull handles, and the first spring is compressed by the limiting plate until one end of the fixed rod does not contact the scraper, thereby completing the disassembly of the scraper, and the operation is simple and fast. Description of the Drawings

[0017] Figure 1 is a perspective view of a double-sided single-color dampening offset printing press based on the adjustment of the water supply amount to the brush roller from the first perspective;

[0018] Figure 2 is a cross-sectional view of a double-sided single-color dampening offset printing press based on the adjustment of the water supply amount to the brush roller from the front view;

[0019] Figure 3 is a cross-sectional view of the water supply assembly in a double-sided single-color dampening offset printing press based on the adjustment of the water supply amount to the brush roller from the front view;

[0020] Figure 4 is an overall perspective view of the water supply assembly in a double-sided single-color dampening offset printing press based on the adjustment of the water supply amount to the brush roller;

[0021] Figure 5 is a cross-sectional view of the scraper and the mounting plate in a double-sided single-color dampening offset printing press based on the adjustment of the water supply amount to the brush roller from the front view;

[0022] Figure 6 is in a double-sided single-color dampening offset printing press based on the adjustment of the water supply amount to the brush roller Figure 1 Enlarged view of part A.

[0023] The reference numerals in the figure are: 1, frame; 2, front paper transfer roller; 21, lower impression cylinder; 22, lower blanket cylinder; 23, lower plate cylinder; 24, middle paper transfer roller; 25, upper impression cylinder; 26, upper blanket cylinder; 27, upper plate cylinder; 28, conveyor belt; 3, ink distribution system; 4, water supply assembly; 41, dampening roller; 42, ink fountain roller; 43, water distribution roller; 44, brush roller; 45, water tank; 46, doctor blade; 47, mounting plate; 471, cavity; 472, fixing rod; 473, limiting plate; 474, first spring; 475, pull handle; 48, rack; 49, fixing plate; 410, rotating rod; 411, gear; 412, turntable; 413, slide bar; 414, second spring; 415, plug rod. Detailed implementation manners

[0024] To further understand the features, technical means, specific purposes and functions achieved by the present utility model, the following further describes the present utility model in detail in conjunction with the accompanying drawings and specific implementation manners.

[0025] See Figures 1 to 6 As shown, the present utility model provides a double-sided single-color water-wet offset printing machine based on the regulation of the water supply amount of a brush roller, including a frame 1. A front paper transfer roller 2 is arranged inside the frame 1. A lower impression cylinder 21 is arranged at the lower end of the front paper transfer roller 2. A lower blanket cylinder 22 and a lower plate cylinder 23 are successively arranged below the lower impression cylinder 21. A middle paper transfer roller 24 is arranged on one side of the lower impression cylinder 21. An upper impression cylinder 25 is arranged on one side of the middle paper transfer roller 24. A conveyor belt 28 is connected below the upper impression cylinder 25. An upper blanket cylinder 26 and an upper plate cylinder 27 are successively arranged above the upper impression cylinder 25. An ink distribution system 3 for inking the paper is arranged above the upper plate cylinder 27. A water supply assembly 4 for adjusting the humidity inside the frame 1 is arranged on one side of the upper plate cylinder 27.

[0026] The front paper transfer roller 2 is driven to rotate by a motor. The paper is transferred from the middle of the front paper transfer roller 2 to the lower impression cylinder 21, and then passes through the tangent position between the front paper transfer roller 2 and the lower impression cylinder 21 and enters the tangent position between the lower impression cylinder 21 and the lower blanket cylinder 22, so that the plate on the lower impression cylinder 21 contacts the water supply assembly 4, then passes through the ink distribution system 3 and contacts the inking rollers in the ink distribution system 3, so that the printed graphic part is inked. When passing through the tangent position between the lower impression cylinder 21 and the lower blanket cylinder 22, the ink is printed on the upper part of the paper to complete the printing of the lower part. Then, through the tangent part between the lower impression cylinder 21 and the middle paper transfer roller 24, the paper is brought into the upper blanket cylinder 26 and the upper plate cylinder 27 to print ink on the other side of the paper, thereby completing the printing work of the paper, and then being transferred out through the conveyor belt 28.

[0027] See Figures 1 to 4As shown, the water supply assembly 4 includes a dampening roller 41, a fountain roller 42, a water leveling roller 43, a brush roller 44, a water tank 45, a squeegee 46 and a mounting plate 47; the dampening roller 41 is arranged on one side of the upper printing plate cylinder 27; the fountain roller 42 is arranged on the side of the dampening roller 41 away from the upper printing plate cylinder 27; the water leveling roller 43 is arranged on one side of the fountain roller 42; the brush roller 44 is arranged on one side of the water leveling roller 43; the water tank 45 is installed below the brush roller 44; the squeegee 46 is arranged directly above the brush roller 44; the mounting plate 47 is installed above the squeegee 46, and the squeegee 46 is snap-connected to the mounting plate 47; the mounting plate 47 is slidably connected to the frame 1, and a driving component for driving the mounting plate 47 to move up and down is arranged above the mounting plate 47.

[0028] When it is necessary to adjust the water supply amount of the brush roller 44, the driving component drives the mounting plate 47 to move, and then the mounting plate 47 drives the squeegee 46 to move, so that the gap size between the squeegee 46 and the brush roller 44 begins to change, thereby affecting the amount of water absorbed by the brush roller 44 from the water tank 45. Since the amount of water on the dampening roller 41 changes with the amount of water ejected by the brush roller 44, the adjustment of the water supply amount of the brush roller 44 is achieved. According to the adjustment of the water supply amount of the brush roller 44, the humidity of the frame 1 during use can be adjusted to prevent affecting the printing effect.

[0029] A capacitive sensor is also installed on the brush roller 44. The capacitive sensor can detect the capacitance change caused by the moisture change on the brush roller 44. When the amount of water on the brush roller 44 increases, it may affect the surrounding electric field distribution, thereby causing a change in the capacitance value. By measuring this capacitance change, the amount of water on the brush roller 44 can be indirectly inferred. Specifically, this capacitive sensor does not belong to the protection scope of this application, so it is not shown in the figure.

[0030] See Figures 2 to 4 As shown, the driving component includes a rack 48, a fixing plate 49, a rotating rod 410, a gear 411, a turntable 412 and a sliding rod 413; the rack 48 is installed on the mounting plate 47; the fixing plate 49 is arranged directly above the mounting plate 47, and both sides of the fixing plate 49 are fixedly connected to the inner wall of the frame 1. A through hole for the rack 48 to move is opened on the fixing plate 49; the rotating rod 410 is installed on one side of the rack 48; one end of the rotating rod 410 extends out of the frame 1; the gear 411 is installed on the outer surface of the rotating rod 410; the turntable 412 is arranged at the extended end of the rotating rod 410; the sliding rod 413 is installed on the mounting plate 47 and is located inside the two groups of racks 48.

[0031] When moving the mounting plate 47, by rotating the outer turntable 412, the rotating rod 410 is driven by the turntable 412 to rotate, and then the gear 411 is driven by the rotating rod 410 to rotate. Since the gear 411 meshes with the rack 48, the rack 48 is driven to move, and then the mounting plate 47 is driven by the rack 48 to move, so as to move the scraper 46.

[0032] See Figure 4 As shown, a second spring 414 that abuts against the fixed plate 49 is sleeved on the sliding rod 413, and the other end of the second spring 414 is fixedly connected to the mounting plate 47.

[0033] When the mounting plate 47 moves, it drives the sliding rod 413 to move and squeezes the second spring 414 sleeved on the sliding rod 413, so that the mounting plate 47 is more stable when moving.

[0034] See Figure 1 and Figure 6 As shown, a plug rod 415 passes through the turntable 412, and a limiting hole matching the plug rod 415 is provided on the frame 1.

[0035] By rotating the turntable 412 to drive the rotating rod 410 to rotate, when the position of the scraper 46 moves to a suitable position, by inserting the plug rod 415 from the turntable 412 and into the limiting hole, the position of the turntable 412 is fixed, thus preventing the situation of the turntable 412 rotating by itself, which is more reliable.

[0036] See Figure 5 As shown, a cavity 471 is provided inside the mounting plate 47. A fixing rod 472 is arranged in the cavity 471. One end of the fixing rod 472 is provided with an abutting portion that can abut against the scraper 46, and the other end of the fixing rod 472 is provided with a pull handle 475. A limiting plate 473 is installed on the fixing rod 472, and the limiting plate 473 abuts against the inner wall of the cavity 471. A first spring 474 that abuts against the limiting plate 473 is sleeved on the fixing rod 472, and the other end of the first spring 474 is fixedly connected to the inner wall of the cavity 471.

[0037] When replacing the scraper 46 after long-term use, by pulling the pull handles 475 on both sides, the fixing rod 472 is driven to move by the pull handles 475, and the first spring 474 is squeezed by the limiting plate 473 until one end of the fixing rod 472 does not contact the scraper 46, thus completing the disassembly of the scraper 46, and the operation is simple and fast.

[0038] See Figure 5 As shown, the scraper 46 is provided with a fixing hole that can be inserted and matched with the abutting portion.

[0039] Through the fixing hole provided on the scraper 46, when the fixing rod 472 is inserted, the scraper 46 is more firm and not easy to shake.

[0040] See Figure 2 As shown, a rubber pad is provided at the bottom of the frame 1.

[0041] By providing a rubber pad at the bottom of the frame 1, the vibration and noise generated during operation are reduced.

[0042] The above embodiments only represent one or several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A double-sided single-color water-based offset printing machine based on the regulation of the water supply amount of a brush roller, characterized in that, It includes a frame (1), a front paper feed roller (2) is arranged inside the frame (1), a lower impression cylinder (21) is arranged at the lower end of the front paper feed roller (2), a lower blanket cylinder (22) and a lower plate cylinder (23) are successively arranged below the lower impression cylinder (21), a middle paper feed roller (24) is arranged on one side of the lower impression cylinder (21), an upper impression cylinder (25) is arranged on one side of the middle paper feed roller (24), a conveyor belt (28) is connected below the upper impression cylinder (25), an upper blanket cylinder (26) and an upper plate cylinder (27) are successively arranged above the upper impression cylinder (25), an inking system (3) for inking the paper is arranged above the upper plate cylinder (27), and a water supply component (4) for adjusting the humidity inside the frame (1) is arranged on one side of the upper plate cylinder (27); The water supply component (4) includes a dampening roller (41), a fountain roller (42), a water distribution roller (43), a brush roller (44), a water tank (45), a doctor blade (46) and a mounting plate (47); The dampening roller (41) is arranged on one side of the upper plate cylinder (27); The fountain roller (42) is arranged on the side of the dampening roller (41) away from the upper plate cylinder (27); The water distribution roller (43) is arranged on one side of the fountain roller (42); The brush roller (44) is arranged on one side of the water distribution roller (43); The water tank (45) is installed below the brush roller (44); The doctor blade (46) is arranged directly above the brush roller (44); The mounting plate (47) is installed above the doctor blade (46), and the doctor blade (46) is snap-connected to the mounting plate (47); the mounting plate (47) is slidably connected inside the frame (1), and a driving component for driving the mounting plate (47) to move up and down is arranged above the mounting plate (47); The driving component includes a rack (48), a fixing plate (49), a rotating rod (410), a gear (411), a turntable (412) and a sliding rod (413); The rack (48) is installed on the mounting plate (47); The fixing plate (49) is arranged at a position directly above the mounting plate (47), both sides of the fixing plate (49) are fixedly connected to the inner wall of the frame (1), and a through hole for the rack (48) to move is opened on the fixing plate (49); The rotating rod (410) is installed on one side of the rack (48); one end of the rotating rod (410) extends outwards through the frame (1); The gear (411) is installed on the outer surface of the rotating rod (410); The turntable (412) is arranged at the extended end of the rotating rod (410); The sliding rod (413) is arranged on the mounting plate (47) and is located inside two groups of racks (48).

2. The double-sided single-color water-based offset printing press based on the water supply amount adjustment of the brush roller according to claim 1, wherein, A second spring (414) that abuts against the fixing plate (49) is sleeved on the sliding rod (413), and the other end of the second spring (414) is fixedly connected to the mounting plate (47).

3. A double-sided single-color water-based offset printing press based on the adjustment of the water supply amount of a brush roller, characterized in that, A plug rod (415) penetrates through the turntable (412), and a limiting hole that matches the plug rod (415) is arranged on the frame (1).

4. A double-sided single-color water-based offset printing press based on the adjustment of the water supply amount of a brush roller, characterized in that, A cavity (471) is provided inside the mounting plate (47). A fixing rod (472) is arranged inside the cavity (471). One end of the fixing rod (472) is provided with an abutting portion capable of abutting against the scraper (46). A pull handle (475) is arranged at the other end of the fixing rod (472). A limiting plate (473) is mounted on the fixing rod (472). The limiting plate (473) abuts against the inner wall of the cavity (471). A first spring (474) abutting against the limiting plate (473) is sleeved on the fixing rod (472). The other end of the first spring (474) is fixedly connected to the inner wall of the cavity (471).

5. A double-sided single-color water-based offset printing press with water supply amount adjustment based on a brush roll, characterized in that, A fixing hole capable of being inserted and matched with the abutting portion is provided on the scraper (46).

6. A double-sided single-color water-based offset printing press with water supply amount adjustment based on a brush roller, characterized in that, Rubber is provided at the bottom of the frame (1).

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