A printing device of a lithographic printing press

Abstract

The present application relates to the technical field of lithographic printing, and specifically relates to a printing device of a lithographic printing machine, which comprises a printing module, one side of the printing module is provided with a cleaning module one and a cleaning module two, the printing module comprises a fixed shell, a plate cylinder is rotationally connected to the top of the inner side of the fixed shell, a plurality of inking rollers are rotationally connected to the top of the plate cylinder and are arranged on the inner side of the fixed shell, and a plurality of water moistening rollers are rotationally connected to one side of the plate cylinder and are arranged on the inner side of the fixed shell. In the present application, a connecting plate is slidably connected to the inner side of the adjusting plate, the inking roller can be moved downward out of the adjusting plate by a hydraulic rod, the rubber roller can be moved downward between the cleaning module one and the cleaning module two and separated from the plate cylinder, the cleaning module one and the cleaning module two can be moved along the rubber roller to clean the surface of the rubber roller, the rubber roller does not need to be removed, the rubber roller can be automatically cleaned, and the cleaning is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithographic printing, in particular to a printing device of a lithographic printing machine. BACKGROUND

[0002] The lithographic printing machine is used for realizing the printing process by using the principle of water and oil repulsion, making the image part resistant to water and oil, the blank part resistant to oil and water, and then transferring the ink on the image part of the printing cylinder to the surface of the printing material under the action of pressure, so that the printing process is completed. In the printing process, the ink attached to the image of the printing cylinder is first transferred to the surface of the rubber layer of the rubber cylinder, and then transferred to the surface of the printing material through the impression. The existing printing device of the lithographic printing machine needs to be cleaned every day or after each batch of products is printed in order to avoid the oxidation of the rubber layer on the surface of the rubber roller to form a film layer and affect the transmission of the ink. If the shell is directly opened to clean the rubber roller, the rubber roller is easily blocked by the corresponding paper conveying structure arranged in the printing device, which is not convenient for cleaning. In addition, the rubber roller needs to be rotated to clean the rubber roller completely, but the surface of the rubber roller is always in contact with the surface of the printing roller, so the residual ink on the surface of the printing roller will continue to transfer to the rubber roller, which needs a long time to clean completely. At the same time, when the corresponding chemical solvent is used for cleaning, the chemical solvent may drop into the interior of the printing device, causing pollution in the interior of the printing device. If the rubber roller is removed for cleaning, the rubber roller needs to be supported by the corresponding supporting structure and fixed on the shell of the printing device by screws. In addition, the length of the rubber roller is relatively long and the weight is relatively large, so it is not convenient to remove the rubber roller for cleaning. SUMMARY

[0003] In order to overcome the above technical problems, the purpose of the present application is to provide a printing device of a lithographic printing machine, which can move the impression roller out of the adjusting plate by adjusting the sliding connection of the connecting plate on the inner side of the plate, and make the rubber roller move between the cleaning module one and the cleaning module two, and separate from the printing roller. The cleaning module one and the cleaning module two can move along the rubber roller to clean the surface of the rubber roller. The rubber roller does not need to be removed, and the rubber roller can be automatically cleaned, which is more convenient.

[0004] The purpose of the present application can be realized by the following technical solutions:

[0005] The utility model provides a kind of printing device of lithographic press, including printing module, which is provided with cleaning module one and cleaning module two on one side of the printing module, the printing module includes fixed shell, printing plate roller is rotatably connected to the inside top of the fixed shell, the top of the printing plate roller is provided with a plurality of ink roller rotatably connected with the inside of the fixed shell, and the side of the printing plate roller is provided with a plurality of water moistening roller rotatably connected with the inside of the fixed shell, the side of the printing plate roller is in contact with the side of adjacent two ink rollers, and the side of the printing plate roller is in contact with the side of adjacent two water moistening rollers, the bottom of the side of the printing plate roller is provided with rubber roller, the bottom of the side of the rubber roller is provided with impression roller, the two sides of the fixed shell are provided with connecting groove corresponding to rubber roller and impression roller, the inside top of the connecting groove is rotatably connected with adjusting plate, the inside of the adjusting plate is slidably connected with two connecting plates, and the two ends of rubber roller and impression roller are rotatably connected with the inside of adjacent connecting plate, the two sides of the fixed shell are fixedly connected with hydraulic rod corresponding to connecting groove, the output end of the hydraulic rod is drivingly connected with support block, and the two ends of the impression roller are fixedly connected with connecting rod rotatably connected with the inside of adjacent support block.

[0006] The hydraulic rod can support the impression roller through the support block, the impression roller can support the rubber roller through the connecting plate, water is transferred to the printing plate roller through the water moistening roller, the non-pattern area of the printing plate roller is stained with water, ink is transferred to the printing plate roller through the ink roller, the pattern area on the printing plate roller is stained with ink, then the printing plate roller can transfer the ink to the rubber roller, when paper is conveyed between the rubber roller and the impression roller through the paper feeding structure of the printing machine, the paper is clamped by the rubber roller and the impression roller, so that the rubber roller transfers the ink pattern on it to the paper, thereby printing on the paper.

[0007] When the rubber roller needs to be cleaned, the support block is moved downward by the hydraulic rod, the support block moves the impression roller downward through the connecting rod, at this time, under the action of gravity, the rubber roller and the connecting plate at the end thereof move downward, the impression roller moves out of the adjusting plate, the connecting plate at the end of the impression roller is separated from the adjusting plate and moves to the bottom of the connecting groove, at the same time, the rubber roller moves downward between the cleaning module one and the cleaning module two, so that the printing plate roller, the rubber roller and the impression roller are separated by a certain gap, the cleaning module one and the cleaning module two can move along the rubber roller to clean the surface of the rubber roller, without taking down the rubber roller, and the rubber roller can be automatically cleaned, the cleaning is more convenient, the rubber roller will not be separated from the printing plate roller, so that the residual ink on the printing plate roller does not continuously stain the rubber roller, which is beneficial to speed up the cleaning speed.

[0008] Further in: the other side of the fixed shell corresponding to the rubber roller and the impression roller is provided with two drive mechanisms, the drive mechanism includes a drive box, the side of the drive box of the top drive mechanism is fixedly connected with the side of the adjacent connecting plate, the side of the drive box of the bottom drive mechanism is fixedly connected with the side of the adjacent supporting block, the inner side of the drive box is rotatably connected with a drive rod, one end of the drive rod of the top drive mechanism is fixedly connected with the end of the rubber roller, and one end of the drive rod of the bottom drive mechanism is fixedly connected with the end of the adjacent connecting rod, a drive motor is arranged on the bottom of the inner side of the drive box, a drive shaft rotatably connected with the inner side of the drive box is drivingly connected with the output end of the drive motor, drive gears are fixedly sleeved with the sides of the drive shaft and the drive rod, and the adjacent two drive gears are in meshing transmission, the top connecting plate can support and limit the top drive box, and the supporting block can support and limit the bottom drive box, the drive motor can drive the drive shaft to rotate, the drive shaft can drive the drive rod to rotate through the drive gear, the drive rod of the top drive mechanism can drive the rubber roller to rotate, the drive rod of the bottom drive mechanism can drive the connecting rod to rotate, and the connecting rod can drive the impression roller to rotate, so as to convey the paper, and when cleaning, the surface of the rubber roller can be completely cleaned, and corresponding motors and other drive structures can be arranged on the side of the fixed shell to drive the plate roller, the dampening roller and the inking roller to rotate.

[0009] Further in: the opposite sides of the two adjusting plates are fixedly connected with limiting rings, and the side of the adjusting plate away from the drive mechanism is fixedly connected with a limiting plate, when the supporting block moves downward and the impression roller and the rubber roller move downward, the supporting block and the connecting rod can pass through the inside of the limiting ring, so that the impression roller and the end plate thereof move out of the inside of the adjusting plate smoothly, the opening of the limiting ring is relatively small, so that the bottom of one limiting ring will block the drive box on the rubber roller, and the other limiting ring will block the limiting plate, after the rubber roller moves between the cleaning module one and the cleaning module two, the rubber roller can be supported by the limiting ring, the downward movement of the rubber roller is prevented, the rubber roller stays between the cleaning module one and the cleaning module two, the two connecting plates are separated, and the plate roller, the rubber roller and the impression roller are separated from each other by a certain gap.

[0010] Further in: the top of the adjusting plate is provided with a power box, the side of the power box is fixedly connected with the side of the fixed shell, the inner side of the power box is provided with a power motor, the output end of the power motor is in transmission connection with a transmission shaft which is rotatably connected with the inner side of the power box, the side of the transmission shaft is fixedly sleeved with a transmission gear, the side of the limiting ring is fixedly connected with a gear ring, the top of the gear ring is in meshing transmission with the transmission gear, the limiting ring and the bottom of the gear ring are both provided with openings, after the impression roller is moved out of the adjusting plate, the power motor can be started, the power motor can drive the transmission shaft to rotate, the transmission shaft drives the gear ring to rotate through the transmission gear, the gear ring can drive the limiting ring and the adjusting plate to rotate, so that the cleaning module one is rotated to the top of the rubber roller, and the cleaning module two is rotated to the bottom of the rubber roller, so that the cleaning liquid and the like can be received by the cleaning module two, when the hydraulic rod drives the supporting block to move downward, the supporting block and the connecting rod can pass through the openings of the limiting ring and the gear ring.

[0011] Further in: the cleaning module one comprises a cleaning box one, three cavities are formed in the side of the cleaning box one, a grid frame is fixedly connected with the inner side of the cavity located in the middle, and the side of the grid frame is fixedly connected with cleaning cotton one, the cleaning module two comprises a cleaning box two, and wiping cotton is arranged on the side of the cleaning box two corresponding to the cleaning cotton one, two adjusting frames are fixedly connected with the top of the opposite surfaces of the two adjusting plates, the top surfaces of the cleaning box one and the cleaning box two are slidably connected with the side surfaces of the adjacent adjusting frames, and two clamping plates are fixedly connected with the bottom of the opposite surfaces of the two adjusting plates corresponding to the cleaning box one and the cleaning box two.

[0012] Further in: the inner side of the adjusting frame is slidably connected with an adjusting block, the top surfaces of the cleaning box one and the cleaning box two are fixedly connected with the bottom surfaces of the adjacent adjusting blocks, the inner side of the adjusting frame is rotatably connected with an adjusting screw rod which is screw-connected with the adjusting block, the inner side of one side of the adjusting frame is provided with an adjusting motor, and the output end of the adjusting motor is in transmission connection with the end portion of the adjusting screw rod, the adjusting motor can drive the adjusting screw rod to rotate, and the adjusting block on the adjusting screw rod can move when the adjusting screw rod rotates, so that the two adjusting blocks can respectively drive the cleaning box one and the cleaning box two to move, so that the cleaning box one and the cleaning box two move along the surface of the rubber roller, and the surface of the rubber roller is comprehensively cleaned.

[0013] Further in, the cleaning box is provided with a fixed plate fixedly connected with the inner side of the adjacent cavity on both sides of one side of the cleaning box, a plurality of leakage holes are formed in the top of the side of the fixed plate, cleaning cotton II is fixedly connected to the bottom of the side of the fixed plate, a connecting pipe is fixedly connected to the inner side of the three cavities, and the connecting pipe is in communication with the interiors of the cavities on both sides of the cleaning box, and a hose is in communication with one end of the connecting pipe located outside the cavities, so that water can be conveyed into the connecting pipe through the hose, the connecting pipe can convey water into the cavities on both sides of the cleaning box, and the water in the cavities can fall on the surface of the rubber roller through the leakage holes and then flow downward along the surface of the rubber roller, so that the cleaning agent on the surface of the rubber roller can be taken away by water, and the water stains and residual cleaning agent on the rubber roller can be cleaned by the cleaning cotton II.

[0014] Further in, the cleaning box is provided with a fixed plate fixedly connected with the inner side of the adjacent cavity on both sides of one side of the cleaning box, a plurality of leakage holes are formed in the top of the side of the fixed plate, cleaning cotton II is fixedly connected to the bottom of the side of the fixed plate, a connecting pipe is fixedly connected to the inner side of the three cavities, and the connecting pipe is in communication with the interiors of the cavities on both sides of the cleaning box, and a hose is in communication with one end of the connecting pipe located outside the cavities, so that water can be conveyed into the connecting pipe through the hose, the connecting pipe can convey water into the cavities on both sides of the cleaning box, and the water in the cavities can fall on the surface of the rubber roller through the leakage holes and then flow downward along the surface of the rubber roller, so that the cleaning agent on the surface of the rubber roller can be taken away by water, and the water stains and residual cleaning agent on the rubber roller can be cleaned by the cleaning cotton II.

[0015] Further in, the collecting groove is fixedly connected with two positioning cylinders in contact with the side of the extrusion plate in the inner side of the collecting groove, and the inner side of the positioning cylinder is fixedly connected with a spring fixedly connected with the side of the extrusion plate, so that the extrusion plate can move towards the positioning cylinder after the arc tooth block I and the arc tooth block II are separated, the grid plate moves away from the water absorption cotton and moves to the original position, and the extrusion plate can be abutted against the positioning cylinder under the action of the spring, so that the position of the extrusion plate is limited by the positioning cylinder and the spring.

[0016] Further in: the fixed shell inner side corresponds to the fixed connection between the rubber roller and the impression roller with two guide frame, the guide frame inner side is connected with the guide plate, the guide frame inner side is fixedly connected with the telescopic rod, and the telescopic rod output end is connected with the guide plate inner side, the paper can be moved to the rubber roller and the impression roller between the guide frame and the guide plate, when the surface of the rubber roller needs to be printed, the telescopic rod can drive the guide plate to move to the inside of the guide frame, so that the guide plate is separated from the two adjusting plates, and then the position of the rubber roller and the impression roller is adjusted, the conveying rod can be arranged on the top of the guide frame, and the conveying wheel is arranged on the conveying rod, the paper is moved along the surface of the guide frame through the rotation of the conveying wheel.

[0017] The beneficial effects of the present application are:

[0018] 1, the connecting plate is connected with the adjusting plate, the hydraulic rod can support the impression roller through the supporting block, the impression roller can support the rubber roller through the connecting plate, when the rubber roller needs to be cleaned, the supporting block can be moved downward, the impression roller can be moved out of the adjusting plate, and the rubber roller can be moved downward between the cleaning module one and the cleaning module two, and the plate roller is separated, the cleaning module one and the cleaning module two can be moved along the rubber roller, and the surface of the rubber roller can be cleaned, the rubber roller does not need to be taken down, and the rubber roller can be automatically cleaned, the cleaning is more convenient, the rubber roller and the plate roller are kept apart during cleaning, the residual ink on the plate roller is prevented from continuously staining the rubber roller, and the cleaning speed is accelerated;

[0019] 2, the collecting groove is formed in the two sides of the cleaning box two, when cleaning, the impression roller can be moved out of the adjusting plate, the adjusting plate can be rotated, the cleaning box two can be moved to the bottom of the rubber roller, the cleaning cotton one on the cleaning box one can be used to clean the surface of the rubber roller, then water can be delivered to the rubber roller through the leakage hole on the fixed plate, the cleaning agent can be taken away by water, the water and the cleaning agent on the rubber roller can be received and absorbed by the water absorbing cotton on the cleaning box two, so that the water and the cleaning agent are prevented from dripping, and the device is kept clean. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a printing device overall structure schematic view of the present application's lithographic press;

[0022] Figure 2 It is a fixed shell internal side structure schematic view in the present application;

[0023] Figure 3 It is a fixed shell side structure schematic view in the present application;

[0024] Figure 4Is the guide frame inside the invention in the structure of the front view schematic diagram;

[0025] Figure 5 Is the adjustment plate structure schematic diagram in the invention;

[0026] Figure 6 Is the power box inside the invention in the structure of the rear view schematic diagram;

[0027] Figure 7 Is the drive mechanism inside the invention in the structure of the side view schematic diagram;

[0028] Figure 8 Is the connection plate structure schematic diagram in the invention;

[0029] Figure 9 Is the adjustment frame structure schematic diagram in the invention;

[0030] Figure 10 Is the cleaning module one structure schematic diagram in the invention;

[0031] Figure 11 Is the cleaning box one inside the invention in the structure of the rear view schematic diagram;

[0032] Figure 12 Is the cleaning module two structure schematic diagram in the invention;

[0033] Figure 13 Is the cleaning box two inside the invention in the structure of the side view schematic diagram;

[0034] Figure 14 Is the extrusion plate structure schematic diagram in the invention.

[0035] In the figure: 100, printing module; 110, fixed shell; 111, plate roller; 112, rubber roller; 113, impression roller; 114, dampening roller; 115, inking roller; 116, connecting groove; 117, connecting rod; 120, guide frame; 121, guide plate; 122, telescopic rod; 130, adjusting plate; 131, limiting ring; 132, tooth ring; 133, connecting plate; 134, limiting plate; 140, hydraulic rod; 141, supporting block; 150, adjusting frame; 151, adjusting block; 152, adjusting motor; 153, adjusting screw; 160, clamping plate; 161, arc tooth block one; 170, power box; 171, power motor; 172, transmission shaft; 173, transmission gear; 180, driving mechanism; 181, driving box; 182, driving motor; 183, driving rod; 184, driving gear; 185, driving shaft; 200, cleaning module one; 210, cleaning box one; 211, cavity; 212, connecting pipe; 220, grid frame; 221, cleaning cotton one; 230, fixed plate; 231, cleaning cotton two; 240, hose; 300, cleaning module two; 310, cleaning box two; 311, wiping cotton; 330, connecting frame; 331, water-absorbing cotton; 332, baffle; 340, extrusion plate; 341, grid plate; 350, sliding block; 351, arc tooth block two; 352, triangular rod; 360, positioning cylinder; 361, spring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0037] Please refer to Figures 1-14As shown, a printing device of a lithographic press, comprising a printing module 100, the printing module 100 is provided with a cleaning module one 200 and a cleaning module two 300 on one side, the printing module 100 comprises a fixed shell 110, the inside top of the fixed shell 110 is rotatably connected with a plate roller 111, the top of the plate roller 111 is provided with a plurality of ink rollers 115 rotatably connected with the inside surface of the fixed shell 110, and the side of the plate roller 111 is provided with a plurality of water rollers 114 rotatably connected with the inside surface of the fixed shell 110, the side of the plate roller 111 is in contact with the side of the adjacent two ink rollers 115, and the side of the plate roller 111 is in contact with the side of the adjacent two water rollers 114, the side bottom of the plate roller 111 is provided with a rubber roller 112, the side bottom of the rubber roller 112 is provided with a printing roller 113, the two sides of the fixed shell 110 are provided with connecting grooves 116 corresponding to the rubber roller 112 and the printing roller 113, the inside top of the connecting groove 116 is rotatably connected with an adjusting plate 130, the inside of the adjusting plate 130 is slidably connected with two connecting plates 133, and the two ends of the rubber roller 112 and the printing roller 113 are rotatably connected with the inside of the adjacent connecting plate 133, the two sides of the fixed shell 110 are fixedly connected with a hydraulic rod 140 corresponding to the connecting groove 116, the output end of the hydraulic rod 140 is drivingly connected with a supporting block 141, and the two ends of the printing roller 113 are fixedly connected with a connecting rod 117 rotatably connected with the inside of the adjacent supporting block 141.

[0038] The hydraulic rod 140 can support the printing roller 113 through the supporting block 141, the printing roller 113 can support the rubber roller 112 through the connecting plate 133, the water is transferred to the plate roller 111 through the water roller 114, the non-pattern area of the plate roller 111 will be stained with water, the ink is transferred to the plate roller 111 through the ink roller 115, the pattern area on the plate roller 111 will be stained with ink, then the plate roller 111 can transfer the ink to the rubber roller 112, when the paper is conveyed between the rubber roller 112 and the printing roller 113 through the paper feeding structure of the printing machine, the paper is clamped and pasted by the printing roller 113 and the rubber roller 112, so that the rubber roller 112 transfers the ink pattern on it to the paper, thereby printing on the paper.

[0039] When the rubber roller 112 needs to be cleaned, the support block 141 can be moved downward by the hydraulic rod 140, and the support block 141 can move the impression roller 113 downward through the connecting rod 117. At this time, under the action of gravity, the rubber roller 112 and the connecting plate 133 at the end thereof will move downward, the impression roller 113 will move out of the adjusting plate 130, the connecting plate 133 at the end of the impression roller 113 will be separated from the adjusting plate 130, and will move to the bottom of the connecting groove 116, and at the same time, the rubber roller 112 will move downward between the cleaning module one 200 and the cleaning module two 300, so that the plate roller 111, the rubber roller 112 and the impression roller 113 are separated from each other by a certain gap. The cleaning module one 200 and the cleaning module two 300 can move along the rubber roller 112 to clean the surface of the rubber roller 112. The rubber roller 112 does not need to be removed, and can be automatically cleaned. The cleaning is more convenient, and the rubber roller 112 will not be separated from the plate roller 111, so as to avoid that the residual ink on the plate roller 111 continuously stains the rubber roller 112, which is beneficial to speed up the cleaning speed.

[0040] Two drive mechanisms 180 are arranged on the other side of the fixed shell 110 corresponding to the rubber roller 112 and the impression roller 113. The drive mechanism 180 comprises a drive box 181. The side surface of the drive box 181 located at the top drive mechanism 180 is fixedly connected with the side surface of the adjacent connecting plate 133, and the side surface of the drive box 181 located at the bottom drive mechanism 180 is fixedly connected with the side surface of the adjacent support block 141. A drive rod 183 is rotatably connected to the inner side surface of the drive box 181. One end of the drive rod 183 located at the top drive mechanism 180 is fixedly connected with the end of the rubber roller 112, and one end of the drive rod 183 located at the bottom drive mechanism 180 is fixedly connected with the end of the adjacent connecting rod 117. A drive motor 182 is arranged on the bottom of the inner side surface of the drive box 181. The output end of the drive motor 182 is in transmission connection with the drive shaft 185 rotatably connected with the inner side surface of the drive box 181. Drive gears 184 are fixedly sleeved on the side surface of the drive shaft 185 and the side surface of the drive rod 183, and the adjacent two drive gears 184 are in meshing transmission. The connecting plate 133 located at the top can support and limit the drive box 181 located at the top, and the support block 141 can support and limit the drive box 181 located at the bottom. The drive motor 182 can drive the drive shaft 185 to rotate, the drive shaft 185 can drive the drive rod 183 to rotate through the drive gear 184, the drive rod 183 of the drive mechanism 180 located at the top can drive the rubber roller 112 to rotate, the drive rod 183 of the drive mechanism 180 located at the bottom can drive the connecting rod 117 to rotate, and the connecting rod 117 can drive the impression roller 113 to rotate, so as to convey the paper. When cleaning, the surface of the rubber roller 112 can be completely cleaned. Corresponding motors and other drive structures can be arranged on the side surface of the fixed shell 110 to drive the plate roller 111, the water roller 114 and the inking roller 115 to rotate.

[0041] Two adjusting plates 130 are fixedly connected with limit rings 131 on the opposite sides, and the side of the adjusting plate 130 away from the driving mechanism 180 is fixedly connected with a limit plate 134; when the hydraulic rod 140 drives the supporting block 141 to move downward, the supporting block 141 and the connecting rod 117 can pass through the inside of the limit ring 131, so that the printing roller 113 and the end plate 133 connected with the printing roller 113 can smoothly move out of the inside of the adjusting plate 130; the opening of the limit ring 131 is relatively small, so that the bottom of one limit ring 131 will block the driving box 181 on the rubber roller 112, and the other limit ring 131 will block the limit plate 134; after the rubber roller 112 moves between the cleaning module one 200 and the cleaning module two 300, the rubber roller 112 can be supported by the limit ring 131 to prevent the rubber roller 112 from moving downward, so that the rubber roller 112 stays between the cleaning module one 200 and the cleaning module two 300, the two connecting plates 133 are separated, and the plate roller 111, the rubber roller 112 and the printing roller 113 are separated by a certain gap.

[0042] A power box 170 is arranged on the top of the adjusting plate 130, the side of the power box 170 is fixedly connected with the side of the fixed shell 110, a power motor 171 is arranged on the inner side of the power box 170, a transmission shaft 172 is drivingly connected with the output end of the power motor 171 and rotatably connected with the inner side of the power box 170, a transmission gear 173 is fixedly sleeved on the side of the transmission shaft 172, a tooth ring 132 is fixedly connected with the side of the limit ring 131, the top of the tooth ring 132 is in meshing transmission with the transmission gear 173, and openings are arranged on the bottom of the limit ring 131 and the tooth ring 132; after the printing roller 113 is moved out of the adjusting plate 130, the power motor 171 can be started, the power motor 171 can drive the transmission shaft 172 to rotate, the transmission shaft 172 drives the tooth ring 132 to rotate through the transmission gear 173, the tooth ring 132 drives the limit ring 131 and the adjusting plate 130 to rotate, so that the cleaning module one 200 is rotated to the top of the rubber roller 112, and the cleaning module two 300 is rotated to the bottom of the rubber roller 112, so that the cleaning module two 300 can receive cleaning liquid, etc.; when the hydraulic rod 140 drives the supporting block 141 to move downward, the supporting block 141 and the connecting rod 117 can pass through the openings of the limit ring 131 and the tooth ring 132.

[0043] The cleaning module one 200 comprises a cleaning box one 210, three cavities 211 are formed in the side of the cleaning box one 210, and a grid frame 220 is fixedly connected to the inner side of the cavity 211 in the middle, and the side of the grid frame 220 is fixedly connected with cleaning cotton one 221. The cleaning module two 300 comprises a cleaning box two 310, and the cleaning box two 310 is provided with a cotton wiping plate 311 corresponding to the cleaning cotton one 221. The two adjusting plates 130 are fixedly connected with two adjusting frames 150 at the top of the opposite surfaces, and the top surfaces of the cleaning box one 210 and the cleaning box two 310 are slidably connected with the side surfaces of the adjacent adjusting frames 150. The bottom of the opposite surfaces of the two adjusting plates 130 is fixedly connected with two clamping plates 160 corresponding to the cleaning box one 210 and the cleaning box two 310. The cleaning box one 210 and the cleaning box two 310 can be limited by the adjusting frame 150 and the clamping plate 160. The cleaning cotton one 221 and the cleaning cotton two 231 on the cleaning box one 210 can be in contact with the surface of the rubber roller 112. Cleaning agent can be added in the cavity 211 in the middle of the cleaning box one 210, and the cleaning agent can penetrate through the grid frame 220 and be absorbed on the cleaning cotton one 221. In this way, the cleaning cotton one 221 can clean the surface of the rubber layer of the rubber roller 112 by the cleaning agent, and the cotton wiping plate 311 can wipe the cleaning agent on the surface of the rubber roller 112.

[0044] The inner side of the adjusting frame 150 is slidably connected with an adjusting block 151, and the top surfaces of the cleaning box one 210 and the cleaning box two 310 are fixedly connected with the bottom surfaces of the adjacent adjusting blocks 151. The inner side of the adjusting frame 150 is rotatably connected with an adjusting screw 153 which is screw-connected with the adjusting block 151. An adjusting motor 152 is arranged on one side of the inner side of the adjusting frame 150. The output end of the adjusting motor 152 is drivingly connected with the end portion of the adjusting screw 153. The adjusting motor 152 can drive the adjusting screw 153 to rotate. When the adjusting screw 153 rotates, the adjusting block 151 thereon can move. In this way, the two adjusting blocks 151 can respectively drive the cleaning box one 210 and the cleaning box two 310 to move, so that the cleaning box one 210 and the cleaning box two 310 move along the surface of the rubber roller 112 and clean the surface of the rubber roller 112 comprehensively.

[0045] The two sides of the cleaning box one 210 are provided with fixed plates 230 fixedly connected with the inner sides of the adjacent cavities 211, a plurality of leakage holes are formed in the top of the side of the fixed plate 230, and cleaning cotton two 231 is fixedly connected to the bottom of the side of the fixed plate 230. The inner sides of the three cavities 211 are fixedly connected with connecting pipes 212, the connecting pipes 212 are in communication with the interiors of the cavities 211 located on the two sides of the cleaning box one 210, a soft pipe 240 is in communication with one end of the connecting pipe 212 located outside the cavity 211, water can be conveyed into the connecting pipe 212 through the soft pipe 240, the connecting pipe 212 can convey water into the cavities 211 on the two sides of the cleaning box one 210, and the water in the cavities 211 can fall on the surface of the rubber roller 112 through the leakage holes and then flow downwards along the surface of the rubber roller 112, so that the cleaning agent on the surface of the rubber roller 112 is taken away by the water, and the water stains and the residual cleaning agent on the rubber roller 112 can be cleaned by the cleaning cotton two 231.

[0046] The two sides of the cleaning box two 310 are provided with collecting grooves, the inner sides of the collecting grooves are fixedly connected with connecting frames 330, the sides of the connecting frames 330 are fixedly connected with water absorption cotton 331, the bottom of the side of the water absorption cotton 331 extends to the interior of the connecting frame 330, the bottom of the side of the connecting frame 330 is fixedly connected with a baffle 332 in contact with the bottom of the side of the water absorption cotton 331, the inner bottom of the connecting frame 330 is slidingly connected with an extrusion plate 340, one end of the side of the extrusion plate 340 is fixedly connected with a grid plate 341 in contact with the water absorption cotton 331, two triangular grooves are formed in the bottom of the extrusion plate 340, the inner bottom of the bottom of the collecting groove is slidingly connected with a sliding block 350 corresponding to the triangular grooves, the top of the sliding block 350 is fixedly connected with a triangular rod 352 slidingly connected with the inner sides of the adjacent triangular grooves, the bottom of the sliding block 350 is fixedly connected with two arc tooth blocks two 351, and the top of the clamping plate 160 close to the cleaning module two 300 is fixedly connected with a plurality of arc tooth blocks one 161 corresponding to the arc tooth blocks two 351, when the cleaning box two 310 moves along the surface of the rubber roller 112 for cleaning, the water flowing down along the surface of the rubber roller 112 can be collected through the collecting groove, the water stains on the rubber roller 112 can be absorbed by the water absorption cotton 331, the rubber roller 112 is cleaned, and finally the surface of the rubber roller 112 is wiped clean by the cleaning cotton two 231, when the cleaning box two 310 moves along the surface of the corresponding clamping plate 160, the arc tooth blocks one 161 can extrude the arc tooth blocks two 351 through the arc-shaped teeth when the arc tooth blocks two 351 are in contact with the arc tooth blocks one 161 on the clamping plate 160, the arc tooth blocks two 351 drive the sliding block 350 to move towards the extrusion plate 340, so that the triangular rod 352 is inserted into the triangular groove, and the extrusion plate 340 is moved towards the baffle 332 under the action of the inclined surface of the triangular rod 352, so that the grid plate 341 extrudes the bottom of the water absorption cotton 331, so that the water on the water absorption cotton 331 is squeezed out and falls into the collecting groove, and a drain pipe can be arranged in the cleaning box two 310, so that the collected water and the cleaning agent in the collecting groove are discharged through the drain pipe.

[0047] Two positioning cylinders 360 are fixedly connected to the inner side of the collecting groove and in contact with the side of the extrusion plate 340, and the inner side of the positioning cylinder 360 is fixedly connected with a spring 361 fixedly connected with the side of the extrusion plate 340. After the arc tooth block one 161 and the arc tooth block two 351 are disengaged, the extrusion plate 340 can be moved to the positioning cylinder 360 under the action of the spring 361, so that the grid plate 341 moves away from the water absorbing cotton 331 and moves to the original position. Under the action of the spring 361, the extrusion plate 340 can be abutted on the positioning cylinder 360, so as to limit the position of the extrusion plate 340 through the positioning cylinder 360 and the spring 361.

[0048] Two guide frames 120 are fixedly connected between the rubber roller 112 and the impression roller 113 on the inner side of the fixed shell 110, a guide plate 121 is slidingly connected to the inner side of the guide frame 120, and a telescopic rod 122 is fixedly connected to the inner side of the guide frame 120, and the output end of the telescopic rod 122 is in transmission connection with the inner side of the guide plate 121. Paper can move between the guide frame 120 and the guide plate 121 to the rubber roller 112 and the impression roller 113. When it is necessary to print on the surface of the rubber roller 112, the telescopic rod 122 can first drive the guide plate 121 to move to the inside of the guide frame 120, so that the guide plate 121 is disengaged from between the two adjusting plates 130, and then the positions of the rubber roller 112 and the impression roller 113 are adjusted. A conveying rod can be provided on the top of the guide frame 120, and a conveying wheel is provided on the conveying rod. When the conveying wheel rotates, the paper moves along the surface of the guide frame 120.

[0049] Working principle: when in use, water is transferred to the plate roller 111 by the water roller 114, and the water is transferred to the non-pattern area of the plate roller 111, and the ink is transferred to the plate roller 111 by the inking roller 115. The pattern area of the plate roller 111 will be stained with ink, and then the plate roller 111 can transfer the ink to the rubber roller 112. The paper can move between the guide frame 120 and the guide plate 121 to the rubber roller 112 and the impression roller 113. The paper can be tightly attached to the rubber roller 112 by the impression roller 113, so that the rubber roller 112 transfers the ink pattern on it to the paper, thereby printing on the paper.

[0050] When the surface of the rubber roller 112 needs to be printed, the telescopic rod 122 can drive the guide plate 121 to move towards the inside of the guide frame 120, so that the guide plate 121 is separated from the two adjusting plates 130, and then the support block 141 can be driven to move downwards by the hydraulic rod 140, the support block 141 can drive the impression roller 113 to move downwards through the connecting rod 117, so that the impression roller 113 moves downwards with the rubber roller 112, the connecting plate 133 at the end of the impression roller 113 can move downwards along the inside of the adjusting plate 130, and the support block 141 and the connecting rod 117 can pass through the openings at the bottom of the limiting ring 131 and the tooth ring 132, so that the connecting plate 133 at the end of the impression roller 113 moves out of the inside of the adjusting plate 130 and moves into the connecting groove 116. Since the opening of the limiting ring 131 is relatively small, one limiting ring 131 at the bottom will block the driving box 181 on the rubber roller 112 from moving downwards, and the other limiting ring 131 will block the limiting plate 134. Therefore, after the rubber roller 112 moves between the cleaning box one 210 and the cleaning box two 310, the limiting ring 131 will support the rubber roller 112 and prevent it from moving downwards, and the two connecting plates 133 will be separated, so that the plate cylinder 111, the rubber roller 112 and the impression roller 113 are separated by a certain gap;

[0051] The power motor 171 can be started, which can drive the transmission shaft 172 to rotate, the transmission shaft 172 can drive the tooth ring 132 to rotate through the transmission gear 173, the tooth ring 132 can drive the adjusting plate 130 to rotate through the limiting ring 131, the adjusting plate 130 can drive the adjusting frame 150 and the clamping plate 160 to rotate, so that the cleaning module one 200 and the cleaning module two 300 are rotated, the cleaning module one 200 is rotated to the top of the rubber roller 112, and the cleaning module two 300 is rotated to the bottom of the rubber roller 112, then the adjusting screw 153 can be driven to rotate by the adjusting motor 152, the adjusting block 151 on the adjusting screw 153 can be moved when the adjusting screw 153 rotates, the two adjusting blocks 151 can drive the cleaning box one 210 and the cleaning box two 310 at the bottom thereof to move respectively, so that the cleaning box one 210 and the cleaning box two 310 move along the surface of the rubber roller 112, the drive motor 182 on one side of the rubber roller 112 can be started, which can drive the drive shaft 185 to rotate, the drive shaft 185 can drive the drive rod 183 to rotate through the drive gear 184, and the drive rod 183 can drive the rubber roller 112 to rotate, so that the surface of the rubber roller 112 can be cleaned comprehensively during cleaning;

[0052] The cleaning cotton 221 and the cleaning cotton 231 on the cleaning box 210 will be in contact with the surface of the rubber roller 112. A cleaning agent can be added into the cavity 211 in the middle of the cleaning box 210. The cleaning agent will penetrate through the grid frame 220 and be on the cleaning cotton 221, so that the surface of the rubber layer on the rubber roller 112 is cleaned by the cleaning cotton 221. Water can be transported into the connecting pipe 212 through the hose 240. The connecting pipe 212 can transport water into the cavities 211 on both sides of the cleaning box 210. The water can fall on the surface of the rubber roller 112 through the leakage hole and then flow down along the surface of the rubber roller 112, so as to take away the cleaning agent on the surface of the rubber roller 112. The cleaning cotton 221 is located between the two cleaning cotton 231. After the cleaning cotton 221 cleans the rubber roller 112 by using the cleaning agent, the water stains and the residual cleaning agent can be cleaned by the cleaning cotton 231.

[0053] When the cleaning box 310 moves along the surface of the rubber roller 112, the cleaning agent on the surface of the rubber roller 112 is wiped by the cleaning cotton 311. The water flowing down along the surface of the rubber roller 112 can be received by the collection groove, and the water stains on the rubber roller 112 can be absorbed by the water absorption cotton 331. Then the surface of the rubber roller 112 is wiped clean by the cleaning cotton 231. When the cleaning box 310 moves, it can move along the surface of the corresponding clamping plate 160. When the arc tooth block 351 is in contact with the arc tooth block 161 on the clamping plate 160, the arc tooth block 161 can extrude the arc tooth block 351 through the arc-shaped teeth, so that the sliding block 350 is driven to move by the arc tooth block 351. The sliding block 350 can drive the triangular rod 352 to move towards the extrusion plate 340, so that the triangular rod 352 is inserted into the triangular groove. At this time, under the action of the inclined surface of the triangular rod 352, the extrusion plate 340 can move towards the baffle 332, so that the grid plate 341 extrudes the bottom of the water absorption cotton 331, so as to squeeze out the water on the water absorption cotton 331 and make the water fall into the collection groove. After the arc tooth block 161 and the arc tooth block 351 are separated, under the action of the spring 361, the extrusion plate 340 can move towards the positioning cylinder 360, so that the grid plate 341 moves away from the water absorption cotton 331.

[0054] After the cleaning module 200 and the cleaning module 300 move from one end of the rubber roller 112 to the other end, the adjusting screw 153 can be reversely moved by adjusting the motor 152, so that the cleaning module 200 and the cleaning module 300 are reversely moved. After the cleaning is completed, the adjusting plate 130 can be reversely rotated to the original angle by the power motor 171, and then the printing roller 113 can be moved upwards to the original position by the hydraulic rod 140. The printing roller 113 can move the rubber roller 112 upwards to the original position by the connecting plate 133.

[0055] In the description of the specification, reference to terms "one embodiment", "an example", "a specific example" and so on is intended to indicate that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. Descriptive expressions of the above terms in the specification do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above is only an example and illustration of the application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the application or exceed the scope defined by the claims.

Claims

1. A printing apparatus for a offset printing press, comprising a printing module, wherein a cleaning module one and a cleaning module two are disposed on one side of the printing module, the printing module includes a fixed housing, a printing plate roller is rotatably connected to the top of the inner side of the fixed housing, a plurality of inking rollers are disposed on the top of the printing plate roller and rotatably connected to the inner side of the fixed housing, and a plurality of dampening rollers are disposed on one side of the printing plate roller and rotatably connected to the inner side of the fixed housing, the side of the printing plate roller contacts the side of two adjacent inking rollers, and the side of the printing plate roller contacts the side of two adjacent dampening rollers, a rubber roller is disposed at the bottom of the side of the printing plate roller, and an impression roller is disposed at the bottom of the side of the rubber roller, characterized in that... The fixed shell has connecting grooves on both sides corresponding to the rubber roller and the impression roller. An adjusting plate is rotatably connected to the top of the inner side of the connecting groove. Two connecting plates are slidably connected to the inner side of the adjusting plate. Both ends of the rubber roller and the impression roller are rotatably connected to the inner side of the adjacent connecting plate. Hydraulic rods are fixedly connected to the connecting grooves on both sides of the fixed shell. A support block is drivenly connected to the output end of the hydraulic rod. Both ends of the impression roller are fixedly connected to connecting rods that are rotatably connected to the inner side of the adjacent support block. The first cleaning module includes a first cleaning box, which has three cavities on its side. A grid frame is fixedly connected to the inner side of the middle cavity. A first cleaning cotton is fixedly connected to the side of the grid frame. The second cleaning module includes a second cleaning box, which has a wiping cotton on its side corresponding to the first cleaning cotton. Two adjustment frames are fixedly connected to the top of the opposite surfaces of the two adjustment plates. The top surfaces of both the first and second cleaning boxes are slidably connected to the sides of the adjacent adjustment frames. Two locking plates are fixedly connected to the bottom of the opposite surfaces of the two adjustment plates corresponding to the first and second cleaning boxes. The cleaning box has a fixing plate on each side that is fixedly connected to the inner side of the adjacent cavity. The top of the side of the fixing plate has several drainage holes. The bottom of the side of the fixing plate is fixedly connected to the cleaning cotton. The inner sides of the three cavities are fixedly connected to the connecting pipes, and the connecting pipes communicate with the inside of the cavities located on both sides of the cleaning box. The end of the connecting pipe outside the cavity is connected to a flexible tube. Limiting rings are fixedly connected to the back sides of both adjustment plates, and a limiting plate is fixedly connected to the side of the adjustment plate located away from the drive mechanism. A power box is provided on the top of the adjustment plate. The side of the power box is fixedly connected to the side of the fixed shell. A power motor is provided on the inner side of the power box. The output end of the power motor is connected to a transmission shaft that is rotatably connected to the inner side of the power box. A transmission gear is fixedly sleeved on the side of the transmission shaft. A toothed ring is fixedly connected to the side of the limiting ring. The top of the toothed ring meshes with the transmission gear. Both the limiting ring and the bottom of the toothed ring are provided with openings.

2. The printing apparatus of a offset printing press according to claim 1, characterized in that, On the other side of the fixed shell, corresponding to the rubber roller and the impression roller, two driving mechanisms are provided. Each driving mechanism includes a driving box. The side of the driving box of the top driving mechanism is fixedly connected to the side of the adjacent connecting plate, and the side of the driving box of the bottom driving mechanism is fixedly connected to the side of the adjacent support block. A driving rod is rotatably connected to the inner side of the driving box. One end of the driving rod of the top driving mechanism is fixedly connected to the end of the rubber roller, and one end of the driving rod of the bottom driving mechanism is fixedly connected to the end of the adjacent connecting rod. A driving motor is provided at the bottom of the inner side of the driving box. The output end of the driving motor is driven by a driving shaft rotatably connected to the inner side of the driving box. Both the side of the driving shaft and the side of the driving rod are fixedly fitted with driving gears, and adjacent driving gears mesh and transmit power.

3. The printing apparatus of a offset printing press according to claim 1, characterized in that, An adjusting block is slidably connected to the inner side of the adjusting frame, and the top surfaces of cleaning box one and cleaning box two are fixedly connected to the bottom surfaces of the adjacent adjusting blocks. An adjusting screw is rotatably connected to the inner side of the adjusting frame and screwed into the adjusting block. An adjusting motor is provided on one inner side of the adjusting frame, and the output end of the adjusting motor is drivenly connected to the end of the adjusting screw.

4. The printing apparatus of a offset printing press according to claim 1, characterized in that, The cleaning box has collection slots on both sides. A connecting frame is fixedly connected to the inner side of the collection slot. Absorbent cotton is fixedly connected to the side of the connecting frame. The bottom of the absorbent cotton extends into the connecting frame. A baffle is fixedly connected to the bottom of the connecting frame, which contacts the bottom of the absorbent cotton. A squeezing plate is slidably connected to the bottom of the inner side of the connecting frame. A grid plate that contacts the absorbent cotton is fixedly connected to one end of the squeezing plate. Two triangular grooves are formed on the bottom surface of the squeezing plate. A sliding block is slidably connected to the inner side of the bottom of the collection slot corresponding to the triangular groove. A triangular rod that slidably connects to the inner side of the adjacent triangular groove is fixedly connected to the top surface of the sliding block. Two arc-tooth blocks are fixedly connected to the bottom surface of the sliding block. Several arc-tooth blocks are fixedly connected to the top surface of the positioning plate on the side near the cleaning module.

5. The printing apparatus of a offset printing press according to claim 4, characterized in that, The inner side of the collection tank is fixedly connected to two positioning cylinders that contact the side of the extrusion plate, and the inner side of the positioning cylinders is fixedly connected to a spring that is fixedly connected to the side of the extrusion plate.

6. The printing apparatus of a offset printing press according to claim 1, characterized in that, Two guide frames are fixedly connected to the inner side of the fixed shell between the rubber roller and the impression roller. A guide plate is slidably connected to the inner side of the guide frame. A telescopic rod is fixedly connected to the inner side of the guide frame, and the output end of the telescopic rod is connected to the inner side of the guide plate.

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