Anilox roller cleaning system and cleaning method

Abstract

An anilox roller cleaning system comprises a cleaning box, a first cavity and a second cavity are formed in the cleaning box, an anilox roller is erected between a first supporting frame and a second supporting frame, the inner walls of the two sides of the first cavity are provided with a toothed plate and a T-shaped sliding groove respectively, and a cleaning assembly is movably arranged between the toothed plate and the T-shaped sliding groove; the cleaning assembly comprises a first cleaning assembly and a second cleaning assembly, the first cleaning assembly is further connected with the imaging assembly, and a controller and a displayer are further fixedly installed outside the cleaning box. The cleaning method of the cleaning system can adapt to anilox rollers of different models; and secondly, the second cleaning assembly can be controlled to deviate through image feedback information, different degree-of-freedom changes of the annular water pipe are achieved, so that a plurality of atomizing nozzles installed inside conduct efficient and targeted cleaning on the rotating anilox roller, the cleaning efficiency is improved, meanwhile, the power consumption is reduced, and the cleaning frequency and the cleaning time are reduced.

Description

Technical Field

[0001] The present invention relates to the field of printing, and particularly to an anilox roll cleaning system and a cleaning method thereof. Background Art

[0002] In a printing press, an anilox roll is a key component, especially in the processes of flexographic printing and gravure printing. Its main function is to precisely control the transfer amount of ink or coating and ensure uniform distribution on the anilox roll. However, with long-term use, there will be cured or difficult-to-remove ink residues inside the cells of the anilox roll. Currently, during use, the anilox roll is generally removed regularly and then cleaned to ensure the printing effect.

[0003] The existing patent CN201910473759.4 discloses a flexographic printing anilox roll cleaning device, specifically discloses that a clamping device for clamping an anilox roll is arranged on a frame, a driving device for driving the anilox roll to rotate around its axis is arranged on the clamping device, a cleaning device is also arranged on the frame, the cleaning device includes a T-shaped slider slidably connected to the frame, the T-shaped slider is connected with a cleaning member for cleaning the anilox roll, and a cleaning device for spraying cleaning agent onto the anilox roll and recovering the cleaning agent is also arranged on the T-shaped slider. Through the above settings, different models or sizes of anilox rolls are clamped by the clamping device, and then the anilox roll is driven to rotate by the driving device. The cleaning member slides along the length direction of the anilox roll following the T-shaped slider, and the cleaning efficiency and cleaning effect are improved by spraying the cleaning agent onto the anilox roll, and then the cleaning agent and cleaning waste liquid are recovered to reduce the pollution to the working environment. It has the function of automatically cleaning the anilox roll, is convenient to operate, fast in cleaning, and improves the cleaning efficiency of the anilox roll. However, the above technical solution cannot completely remove the residues inside the cells. The main reason is that during the cleaning process, the cleaning member always maintains a perpendicular state with the anilox roll. During the rotation and cleaning of the anilox roll, the sprayed cleaning agent cannot perform multi-angle cleaning on the inner edge dead corners of the cells. Secondly, the real-time cleaning effect of the cells cannot be understood through this technical solution, and it is impossible to judge whether to stop cleaning or continue cleaning, resulting in ineffective operation. Summary of the Invention

[0004] In order to solve the above technical defects, the present invention provides an anilox roll cleaning system and a cleaning method thereof, thereby improving the cleaning efficiency of the cells.

[0005] The present invention adopts the following technical solutions:

[0006] A gravure roll cleaning system includes a cleaning tank. A first chamber and a second chamber are formed inside the cleaning tank. The first chamber has an upward opening and is located above the second chamber. A slide rail is fixedly arranged at the bottom of the first chamber. A first support frame is movably installed on the slide rail. The distal end of the first support frame is fixedly installed with a second support frame, and the bottom of the second support frame is fixedly connected to the bottom of the first chamber. A speed regulating motor is also fixedly arranged at the distal end of the second support frame, and the speed regulating motor is fixedly connected to the inner wall of the first chamber. A gravure roll is erected between the first support frame and the second support frame. Tooth plates and T-shaped chutes are respectively installed on the two inner walls of the first chamber. The tooth plates are arranged parallel to the T-shaped chutes, and a cleaning assembly is movably arranged between the tooth plates and the T-shaped chutes. The cleaning assembly includes a first cleaning assembly and a second cleaning assembly. The first cleaning assembly is also connected to an imaging assembly. A controller and a display are fixedly installed outside the cleaning tank. The controller is respectively in signal connection with the speed regulating motor, the first cleaning assembly, the second cleaning assembly and the display.

[0007] Preferably, a box cover is movably installed on the top of the cleaning tank through a hinge. An observation window and a handle are also arranged on the box cover. Support columns are also arranged at the four corners of the bottom of the cleaning tank.

[0008] Preferably, a servo motor and a base are fixedly installed at both ends of the slide rail. A lead screw is fixedly installed at the output end of the servo motor. The first support frame is sleeved on the lead screw. The distal end of the lead screw is cooperatively installed with the base. Arc-shaped limiting plates are movably installed on both the first support frame and the second support frame. A hollow shaft is fixedly connected to the output end of the speed regulating motor. A number of pre-tightening screws are also movably installed on the hollow shaft.

[0009] Preferably, a water storage tank, a recycling box and a water purifier are also arranged inside the second chamber. The recycling box is connected to a water outlet through a pipeline. The recycling box is also connected to the water purifier through a pipeline. The water purifier is also connected to the water storage tank. The water storage tank is connected to an external pipeline through a water inlet pipe. A water pump is arranged inside the water storage tank. The water pump is in signal connection with the controller. And the output end of the water pump is connected to a corrugated pipe. The other end of the corrugated pipe is connected to the second cleaning assembly.

[0010] Preferably, the first cleaning assembly includes a ring, a connecting frame, a driving motor, a driving gear, a connecting arm, a T-shaped slider and a cleaning mechanism. The ring is sleeved on the gravure roll. One end of the ring is respectively fixedly connected to the connecting frame and the connecting arm. The driving motor is fixedly installed on the connecting frame. The driving motor is also in signal connection with the controller. The driving gear is fixedly installed at the output end of the driving motor. The driving gear meshes with the tooth plate. The T-shaped slider is fixedly arranged at the distal end of the connecting arm. The T-shaped slider is movably fitted in the T-shaped chute. The cleaning mechanism is also fitted on the ring. The other end of the ring is movably installed with the second cleaning assembly.

[0011] Preferably, the cleaning mechanism includes a nut, an adjusting screw, a spring, a connecting sleeve and a cleaning plate. A plurality of through holes are formed in the circular ring, and a nut is fixedly arranged outside each through hole. The adjusting screw extends into the through hole, and the extending end is movably connected to the connecting sleeve. The connecting sleeve is fixedly installed on the cleaning plate. Two springs are fixedly connected to each cleaning plate, and the other end of each spring is fixedly connected to the inner wall of the circular ring, and the connecting sleeve is located between the two springs.

[0012] Preferably, the cleaning plate is of an arc structure and the number is not less than four, and a brush is further arranged on one side of the cleaning plate facing the anilox roll.

[0013] Preferably, the second cleaning assembly includes a universal ball head, an electric cylinder, a telescopic rod, a circular ring water pipe and an atomizing nozzle. Three universal ball heads are fixedly arranged on the circumference of the end face of the circular ring, and the end of each universal ball head is connected to the bottom of the electric cylinder. Each electric cylinder is respectively connected to the controller in a signal manner. The front end of the electric cylinder is movably provided with a telescopic rod, the end of the telescopic rod is movably connected to the circular ring water pipe, a plurality of atomizing nozzles are fixedly installed on the inner circular wall of the circular ring water pipe, and the circular water pipe is also connected to a corrugated pipe.

[0014] Preferably, the imaging assembly includes a hollow square pipe, a telescopic square pipe, a fastening screw, a vertical rod, a lifting seat, a moving arm, a sleeve column, a camera and a transmitter. One end of the hollow square pipe is fixed to one end of the connecting frame, and a fastening screw is assembled on the upper part of the hollow square pipe. The telescopic square pipe is assembled in the hollow square pipe. The distal end of the telescopic square pipe is vertically provided with a vertical rod, a lifting seat is assembled on the vertical rod, the lifting seat is fixedly connected to the moving arm, a sleeve column is vertically and fixedly installed on the moving arm, a camera is fixedly installed at the bottom of the sleeve column, a transmitter is fixedly installed at the top of the sleeve column, and the transmitter is connected to the controller in a signal manner.

[0015] Preferably, the present invention also provides a cleaning method based on an anilox roll cleaning system, including the following steps:

[0016] S1: When the system is in use, first open the box cover, place one end shaft of the anilox roll on the second support frame, and push the shaft of the anilox roll into the hollow shaft. Then, make the drive motor work through the controller, so that the second cleaning assembly and the first cleaning assembly are sequentially sleeved on the anilox roll;

[0017] S2: The controller controls the servo motor to work, so that the first support frame moves axially to the right along the lead screw until the first support frame is located below the right end shaft of the anilox roll. Then manually close the arc-shaped limiting plates on the first support frame and the second support frame, and then adjust the position of each cleaning plate through the adjusting screw, so that the brush contacts the surface of the anilox roll. Finally, debug the imaging assembly to reach the best position;

[0018] S3: Cleaning operation. The process controller controls the drive motor to move left or right along the toothed plate, so that the entire cleaning assembly moves left or right on the anilox roll. At this time, the speed-regulating motor and the water pump also start to work. The speed-regulating motor makes the anilox roll start to rotate, and the water pump inputs the cleaning liquid into the circular water pipe through the corrugated pipe. During this process, the circular water pipe continuously changes its position and angle through the adjustment mechanism to perform multi-stage cleaning on the cells of the anilox roll. After cleaning, it is wiped with a brush until the cleaning is completely finished.

[0019] Preferably, the specific steps of the adjustment mechanism include:

[0020] S30: Image acquisition. During the cleaning process, the image Q of the anilox roll is acquired in real time through a camera S , and is fed back to the controller through a transmitter. At the same time, the controller visually displays the image Q S on the display, so that the ink residue inside the cells can be observed.

[0021] S31: Image processing. The controller, according to the acquired image Q S , removes the noise of the image Q through the preprocessing unit, and then divides it into different sub-images Q S . Then, each sub-image Q ZS is marked with different coordinate regions A ZS . At the same time, the shadow morphological features F K inside each coordinate region A K are obtained. The shadow morphological features F K include F K and F K1 and F K2 ;

[0022] S32: Adjustment mechanism. In the next cleaning stroke, when the circular water pipe reaches the position of the anilox roll corresponding to the specified sub-image Q ZS , first, according to different coordinate regions A K , while keeping the circular water pipe perpendicular to the anilox roll, the atomizing nozzle is made to change the spraying pressure and spraying time at any time. At the same time, according to the shadow morphological features F K1 and F K2 , the controller controls each electric cylinder at any time, so that the stroke of the telescopic rod of each electric cylinder changes, thereby causing the circular water pipe to change at different angles, thus achieving efficient cleaning.

[0023] The beneficial effects of the present invention are as follows:

[0024] First, the present invention can, through a servo motor, in real time control the distance between the first support frame and the second support frame according to an anilox roll of different lengths, so as to adapt to anilox rolls of different lengths. Secondly, during cleaning, through a cleaning mechanism, the distance between the cleaning plate and its brush and the anilox roll can be adjusted, so as to adapt to anilox rolls of different diameters and maintain the contact pressure between the brush and the anilox roll.

[0025] Second, the present invention can, through a display, understand in real time the cleaning effect of each cell on the anilox roll. At the same time, through an adjustment mechanism, according to different coordinate regions A K , while keeping the annular water pipe perpendicular to the anilox roll, the atomizing nozzles can change the spraying pressure and spraying time at any time; at the same time, according to the shadow morphological features F K1 and F K2 , the annular water pipe can be changed at different angles at any time, and the residues at the dead corners of the inner edge of the cell can be thoroughly cleaned, with higher pertinence, and power consumption is saved and the cleaning times and duration are reduced.

[0026] Third, through a second cleaning component, the present invention can control the offset of the annular water pipe according to the real-time feedback information of a controller. By controlling the working stroke of each electric cylinder, the length of the telescopic rod corresponding to the electric cylinder continuously changes, and both the end of the electric cylinder and the telescopic rod are freely movably connected. In this way, different offset states of the annular water pipe can be achieved, including vertical, up and down offset, left and right offset, or an offset between up and down and left and right, realizing different degrees of freedom changes of the annular water pipe, so that a plurality of atomizing nozzles installed inside can efficiently and pertinently clean the rotating anilox roll, improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structural schematic diagram of an anilox roll cleaning system;

[0028] Figure 2 is another three-dimensional structural schematic diagram of an anilox roll cleaning system from a different perspective;

[0029] Figure 3 is a front view structural schematic diagram of an anilox roll cleaning system;

[0030] Figure 4 is a top view structural schematic diagram of an anilox roll cleaning system;

[0031] Figure 5 is Figure 4 the sectional structural schematic diagram along the line C-C in

[0032] Figure 6 is a side view structural schematic diagram of an anilox roll cleaning system;

[0033] Figure 7Schematic diagram of the partial enlarged structure of the cleaning component;

[0034] Figure 8 Schematic diagram of the vertical operation of the first cleaning component;

[0035] Figure 9 Schematic diagram of the left - right offset of the first cleaning component;

[0036] Figure 10 Schematic diagram of the up - down offset of the first cleaning component;

[0037] Figure 11 Display effect diagram of the display;

[0038] In the figure: cleaning tank 1, first chamber A, second chamber B, slide rail 2, first support frame 3, second support frame 4, speed - regulating motor 5, reticulated roller 6, toothed plate 7, T - shaped chute 8, cleaning component 9, first cleaning component 90, second cleaning component 91, imaging component 10, controller 11, display 12, tank cover 13, observation window 14, handle 15, support column 16, servo motor 17, base 18, lead screw 19, arc - shaped limiting plate 20, hollow shaft 21, pre - tightening screw 22, water storage tank 23, recycling tank 24, water purifier 25, water outlet 26, water inlet pipe 27, water pump 28, corrugated pipe 29, ring 900, connecting frame 901, drive motor 902, driving gear 903, connecting arm 904, T - shaped slider 905, cleaning mechanism 906, nut 9060, adjusting screw 9061, spring 9062, connecting sleeve 9063, cleaning plate 9064, brush 30, universal ball head 910, electric cylinder 911, telescopic rod 912, ring - shaped water pipe 913, atomizing nozzle 914, hollow square pipe 100, telescopic square pipe 101, fastening screw 102, vertical rod 103, lifting seat 104, moving arm 105, sleeve column 106, camera 107 and transmitter 108. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0041] Embodiment 1:

[0042] Refer to Figures 1 - 11, a gravure roll cleaning system, comprising a cleaning tank 1. A first chamber A and a second chamber B are formed inside the cleaning tank 1. The first chamber A has an upward opening and is located above the second chamber B. The first chamber A is mainly used for cleaning the gravure roll 6. A slide rail 2 is fixedly arranged at the bottom of the first chamber A. A first support frame 3 is movably installed on the slide rail 2. The distal end of the first support frame 3 is fixedly installed with a second support frame 4, and the bottom of the second support frame 4 is fixedly connected to the bottom of the first chamber A. A speed-regulating motor 5 is also fixedly arranged at the distal end of the second support frame 4, and the speed-regulating motor 5 is fixedly connected to the inner wall of the first chamber A. The gravure roll 6 is mounted between the first support frame 3 and the second support frame 4. The first support frame 3 can move left and right on the slide rail 2, which is convenient for adjusting the distance between the first support frame 3 and the second support frame 4 through the servo motor 17, so as to adapt to gravure rolls 6 of different lengths. Tooth plates 7 and T-shaped chutes 8 are respectively installed on the inner walls on both sides of the first chamber A. The tooth plates 7 and the T-shaped chutes 8 are arranged in parallel. Under the action of the driving motor 902, the cleaning assembly 9 can move left and right along the tooth plates 7. The T-shaped chutes 8 are located on the other side, mainly to ensure that the cleaning assembly 9 can move in a straight line, playing a role of positioning and limiting. The cleaning assembly 9 is movably arranged between the tooth plates 7 and the T-shaped chutes 8. The cleaning assembly 9 includes a first cleaning assembly 90 and a second cleaning assembly 91. The controller 11 is respectively in signal connection with the speed-regulating motor 5, the first cleaning assembly 90, the second cleaning assembly 91, the imaging assembly 10 and the display 12. The first cleaning assembly 90 mainly has two functions. The first is to pull the second cleaning assembly 91, and the second is to brush the gravure roll 6. Under the action of the first cleaning assembly 90, the residues inside the cells of the gravure roll 6 after high-pressure cleaning can be cleaned out more efficiently. Secondly, during the return process, the residual ink inside can also be loosened through brushing, and the residues can be better flushed out under the action of the second cleaning assembly 91. The first cleaning assembly 90 is also connected to the imaging assembly 10. The imaging assembly 10 mainly collects the distribution view of the residues inside the cells. Through the controller 11, the angle of the circular water pipe 913 can be changed at any time. The circular water pipe 913 can change at multiple angles, and the positions include but are not limited to being perpendicular to the gravure roll 6, offset left and right or offset up and down, so as to change the angle of the atomizing nozzle 914, thereby cleaning the edge residues inside the cells. The controller 11 and the display 12 are also fixedly installed outside the cleaning tank 1. Through the display 12, the ink distribution inside the cells can be intuitively seen, and then the controller 11 is used to control the second cleaning assembly 91 to perform cleaning operations at different levels.

[0043] Refer to Figures 1 - 2, a lid 13 is also movably installed on the top of the cleaning tank 1 through hinges. During the cleaning process, the lid 13 ensures that no impurities enter the first chamber A and also prevents water from leaking out. Secondly, an observation window 14 and a handle 15 are provided on the lid 13. The internal operation condition can be observed through the observation window 14, which is convenient for obtaining the internal situation. Support columns 16 are also provided at the four corners of the bottom of the cleaning tank 1.

[0044] Refer to Figures 2 - 4 , a servo motor 17 and a base 18 are fixedly installed at both ends of the slide rail 2. A lead screw 19 is fixedly installed at the output end of the servo motor 17. The first support frame 3 is sleeved on the lead screw 19. The distal end of the lead screw 19 is cooperatively installed with the base 18. In order to adapt to the anilox rollers 6 of different lengths, the lead screw 19 can be driven to rotate by the servo motor 17. When the lead screw 19 rotates, the first support frame 3 sleeved on the lead screw 19 will move along the slide rail 2. The moving direction is related to the rotation direction of the lead screw 19. Arc-shaped limiting plates 20 are movably installed on both the first support frame 3 and the second support frame 4. The rotating shafts at both ends of the anilox roller 6 can be stabilized through the arc-shaped limiting plates 20, so as to avoid the anilox roller 6 from wobbling during rotation. The output end of the speed-regulating motor 5 is connected to a hollow shaft 21. The power of the speed-regulating motor 5 can be transmitted to the anilox roller 6 through the hollow shaft 21. A number of pre-tightening screws 22 are movably installed on the hollow shaft 21. The power transmission can be ensured to be more stable through the pre-tightening screws 22 and can be adjusted to adapt to the rotating shafts of different diameters.

[0045] Refer to Figure 5 , a water storage tank 23, a recycling tank 24 and a water purifier 25 are also provided inside the second chamber B. The recycling tank 24 is connected to the water outlet 26 through a pipeline. The recycling tank 24 is also connected to the water purifier 25 through a pipeline. The water purifier 25 is also connected to the water storage tank 23. The water storage tank 23 is connected to an external pipeline through a water inlet pipe 27. A water pump 28 is provided inside the water storage tank 23. The water pump 28 is signal-connected to the controller 11. The output end of the water pump 28 is connected to a corrugated pipe 29. The other end of the corrugated pipe 29 is connected to the second cleaning assembly 91. The length of the corrugated pipe 29 can be telescoped and changed, so it is convenient for movement. The sewage generated during the cleaning process first enters the recycling tank 24 through the water outlet 26, and then the sewage is filtered and purified by the water purifier 25. The purified cleaning liquid is collected in the water storage tank 23 and is sent back to the circular water pipe 913 through the water pump 28.

[0046] Refer to Figures 1 - 7, the first cleaning assembly 90 includes a circular ring 900, a connecting frame 901, a driving motor 902, a driving gear 903, a connecting arm 904, a T-shaped slider 905, and a cleaning mechanism 906. The cleaning mechanism 906 mainly brushes the surface of the anilox roll 6 during the left-right movement. The circular ring 900 is sleeved on the anilox roll 6. One end of the circular ring 900 is fixedly connected to the connecting frame 901 and the connecting arm 904 respectively. Among them, the connecting arm 904 mainly ensures that when the driving motor 902 works, the driving gear 903 can always be meshed with the toothed plate 7, which is equivalent to playing a guiding and limiting role. When the driving motor 902 works, the circular ring 900 will move left and right on the anilox roll 6, and the moving direction is related to the rotation direction of the driving motor 902. The driving motor 902 is fixedly installed on the connecting frame 901. The driving motor 902 is also signal-connected to the controller 11. The output end of the driving motor 902 is fixedly installed with the driving gear 903. The driving gear 903 is meshed with the toothed plate 7. The distal end of the connecting arm 904 is fixedly connected with the T-shaped slider 905. The T-shaped slider 905 is movably fitted in the T-shaped chute 8. The cleaning mechanism 906 is also fitted on the circular ring 900. The other end of the circular ring 900 is movably installed with a second cleaning assembly 91. The second cleaning assembly 91 is mainly used for spraying cleaning liquid, and the angle can be changed during the spraying cleaning process.

[0047] The cleaning mechanism 906 includes a nut 9060, an adjusting screw 9061, a spring 9062, a connecting sleeve 9063, and a cleaning plate 9064. A plurality of through holes are opened on the circular ring 900. A nut 9060 is fixedly arranged outside each through hole. The adjusting screw 9061 extends into the through hole, and the protruding end is movably connected to the connecting sleeve 9063. The connecting sleeve 9063 is fixedly installed on the cleaning plate 9064. Two springs 9062 are also fixedly connected to each cleaning plate 9064. The other end of each spring 9062 is fixedly connected to the inner wall of the circular ring 900, and the connecting sleeve 9063 is located between the two springs 9062. After the anilox roll 6 is placed between the first support frame 3 and the second support frame 4, the cleaning mechanism 906 needs to be manually adjusted according to the diameter of the anilox roll 6. First, by turning the adjusting screw 9061, the bottom of the adjusting screw 9061 drives the cleaning plate 9064 to move downward. The cleaning plate 9064 is of an arc structure. The arc-shaped cleaning plate 9064 can be attached to the surface of the anilox roll 6, so that there is a certain pressure between the brush 30 and the anilox roll 6. In this way, the brush 30 will extend into the cells. Among them, the adjusting screw 9061 mainly plays the role of adjusting the spacing, which is convenient for adjusting the distance according to the wear of the brush 30, preventing the brush 30 from not contacting or having insufficient contact pressure, resulting in the inability to brush out ink residues, etc. The number is not less than four, and a brush 30 is also arranged on the side of the cleaning plate 9064 facing the anilox roll.

[0048] The second cleaning component 91 includes a universal ball head 910, an electric cylinder 911, a telescopic rod 912, a circular water pipe 913, and an atomizing nozzle 914. Three universal ball heads 910 are fixedly arranged on the circumference of the end face of the circular ring 900. The end of each universal ball head 910 is connected to the bottom of the electric cylinder 911. Each electric cylinder 911 is respectively signal-connected to the controller 11. The front end of the electric cylinder 911 is movably provided with a telescopic rod 912. Each electric cylinder 911 can control the length of the telescopic rod 912 at its end through the controller 11, that is, by controlling the working stroke of the electric cylinder 911 to adjust the length. The three electric cylinders 911 are equally spaced, and the bottom of each electric cylinder 911 is movably connected to the circular ring 900 through the universal ball head 910. The telescopic rod 912 at the top is also movably hinged to the circular water pipe 913. A number of atomizing nozzles 914 are fixedly installed on the inner circular wall of the circular water pipe 913. The circular water pipe 913 is also connected to the corrugated pipe 29.

[0049] During operation, when the residues displayed on the display 12 are concentrated in the middle of the cells, that is, when the pretreatment unit identifies it as F K2 , then at this time, the controller 11 controls the three electric cylinders 911 to be in the same stroke. The three electric cylinders 911 are circumferentially distributed and in different spaces. In this way, the telescopic rods 912 at the top of each electric cylinder 911 maintain the same length, so that the circular water pipe 913 can be perpendicular to the anilox roll 6, as Figure 8 shown. In this way, the atomizing nozzles 914 perform vertical flushing on the cells. When the residues displayed on the display 12 are concentrated at the edge of the cells, that is, when the pretreatment unit identifies it as F K1 , then it is necessary to control the strokes of different electric cylinders 911 through the controller 11 so that the lengths of each telescopic rod 912 are no longer the same, so that the circular water pipe 913 can be offset, as Figure 9 and Figure 10 shown. In this way, the atomizing nozzles 914 can clean the residues at various angles inside the cells, especially at the dead corner edges. During this process, the offset angle of the circular water pipe 913 cannot be too large to avoid contact friction between the atomizing nozzles 914 and the surface of the anilox roll 6, which can ensure more thorough cleaning.

[0050] The imaging component 10 includes a hollow square tube 100, a telescopic square tube 101, a fastening screw 102, a vertical rod 103, a lifting seat 104, a moving arm 105, a sleeve column 106, a camera 107, and a transmitter 108. One end of the hollow square tube 100 is fixed to one end of the connecting frame 901, and the fastening screw 102 is installed on the upper part of the hollow square tube 100. The length of the telescopic square tube 101 extending out of the hollow square tube 100 can be controlled by the fastening screw 102, so as to avoid the influence of cleaning liquid on the camera 107 during the cleaning process. Moreover, the lifting seat 104 on the vertical rod 103 can be adjusted in height, so as to conveniently adjust the vertical distance between the camera 107 and the anilox roll 6 and facilitate the adjustment of clarity. The telescopic square tube 101 is installed in the hollow square tube 100. The distal end of the telescopic square tube 101 is vertically installed with the vertical rod 103. The lifting seat 104 is installed on the vertical rod 103. The lifting seat 104 is fixedly connected to the moving arm 105. The sleeve column 106 is vertically and fixedly installed on the moving arm 105. The camera 107 is fixedly installed at the bottom of the sleeve column 106. The image information collected by the camera 107 is directly transmitted to the controller 11 through the transmitter 108, and is output to the display 12 after passing through the controller 11. The transmitter 108 is fixedly installed at the top of the sleeve column 106. The transmitter 108 is signal-connected to the controller 11. Among them, the real-time effect diagram of the display 12 is as Figure 11 shown. It can be seen from the figure that there are shadows at the edge dead corners of some of the cells, which indicates that the offset of the circular water pipe 913 still needs to be controlled in order to completely remove the residues at the edges of the cells.

[0051] The present invention also provides a cleaning method based on the anilox roll cleaning system, including the following steps:

[0052] S1: When the system is in use, first open the box cover 13, place one end shaft of the anilox roll 6 on the second support frame 4, and push the shaft of the anilox roll 6 into the hollow shaft 21. Fix the anilox roll 6 on the hollow shaft 21 through the pre-tightening screw 22. Then, make the drive motor 902 work through the controller 11, so that the second cleaning component 91 and the first cleaning component 90 are successively sleeved on the anilox roll 6. During the reciprocating movement of the first cleaning component 90, it will drive the second cleaning component 91 and the imaging component 10 to move together;

[0053] S2: The controller 11 controls the servo motor 17 to work, so that the first support frame 3 moves axially to the right along the lead screw 19 until the first support frame 3 is located below the right end shaft of the anilox roll 6. Then manually close the arc-shaped limiting plates 20 on the first support frame 3 and the second support frame 4, so that the anilox roll 6 is movably installed on the first support frame 3 and the second support frame 4. Then adjust the position of each cleaning plate 9064 through the adjusting screw 9061 to make the brush 30 contact the surface of the anilox roll 6. Finally, debug the imaging component 10 to reach the best position, and then the equipment can start the cleaning operation;

[0054] S3: cleaning operation, in which the controller 11 controls the drive motor 902 to move left or right along the tooth plate 7, so that the cleaning component 9 moves left or right on the anilox roller 6 as a whole. At this time, the speed regulating motor 5 and the water pump 28 also start to work. The speed regulating motor 5 causes the anilox roller 6 to start rotating, and the water pump 28 inputs the cleaning liquid into the annular water pipe 913 through the bellows 29. In this process, the annular water pipe 913 continuously changes its position and angle through an adjustment mechanism. The adjustment mechanism is mainly based on the image information obtained by the controller 11. According to the distribution of the residues inside the cells, the cells of the anilox roller 6 can be cleaned in a targeted manner. After cleaning, it is brushed with a brush 30 until the cleaning is completely completed.

[0055] The specific steps of the regulation mechanism include:

[0056] S30: Image acquisition: During the cleaning process, the image Q of the anilox roller 6 is acquired in real time through the camera 107. S , and is fed back to the controller 11 through the transmitter 108. At the same time, the controller 11 converts the image Q S The ink residue inside the cells can be observed by displaying the ink on the display 12 intuitively.

[0057] S31: Image processing: the controller 11 processes the image Q S , the image Q is transformed into S Remove noise and then split into different sub-images Q ZS , then each sub-image Q ZS Mark different coordinate areas A K , and at the same time obtain each coordinate area A K The shadow shape feature F K , shadow morphological feature F K Including F K1 and F K2 , where F K1 Indicates that there is a shadow at the edge of the cell, F K2 Indicates that there is a shadow in the middle of the cell;

[0058] S32: Adjustment mechanism: in the next cleaning process, when the circular water pipe 913 reaches the designated sub-image Q ZS When the corresponding anilox roller 6 position is selected, firstly according to different coordinate areas A K , while keeping the annular water pipe 913 perpendicular to the anilox roller 6, the atomizing nozzle 914 changes the spray pressure and spray time at any time. In the actual process, each coordinate area A K The specific injection pressure and time depend on the shadow morphology characteristics F K1 and F K2 When identifying the size of FK2 When the residue fills the entire gravure cell, a greater cleaning intensity is required. When identifying F K1 When the residue is concentrated at the edge, targeted local cleaning is required. At the same time, according to the shadow morphological features F K1 and F K2 , the controller 11 can control each electric cylinder 911 at any time, so that the stroke of the telescopic rod 912 of each electric cylinder 911 changes, thereby causing the circular water pipe 913 to change at different angles, thus achieving efficient cleaning.

[0059] The following table shows the experimental data of the parameter comparison of the system when identifying F K2 When the time is reached.

[0060]

[0061] Through the data comparison in the above table, it can be seen that when the atomizing nozzle 914 has a spraying pressure of 100 Bar and a time of 15 ms, its coverage rate and residue removal rate are better than those under other parameters.

[0062] The following table shows the experimental data of the parameter comparison of the system when identifying F K1 When the time is reached.

[0063]

[0064] Through the data comparison in the above table, it can be seen that when there is a shadow at the edge, when the atomizing nozzle 914 has a spraying pressure of 70 Bar and a time of 10 ms, its residue removal rate is better than that under other parameters, and the central mis-injury rate is lower. The central mis-injury rate mainly refers to the number of times of mis-injury to the center of the gravure cell when the atomizing nozzle 914 sprays during the process of the circular water pipe 913 changing at different angles. When the number of mis-injury times is higher, it will cause changes in the depth of the gravure cell, and in severe cases, it will affect the printing quality.

[0065] The above is only a preferred embodiment of the present invention, and it does not limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A gravure roll cleaning system, comprising a cleaning tank (1), characterized in that, Inside the cleaning box (1), a first chamber (A) and a second chamber (B) are formed. The first chamber (A) has an upward opening and is located above the second chamber (B). A slide rail (2) is fixedly arranged at the bottom of the first chamber (A). A first support frame (3) is movably installed on the slide rail (2). The distal end of the first support frame (3) is fixedly installed with a second support frame (4), and the bottom of the second support frame (4) is fixedly connected to the bottom of the first chamber (A). A speed regulating motor (5) is also fixedly arranged at the distal end of the second support frame (4), and the speed regulating motor (5) is fixedly connected to the inner wall of the first chamber (A). A reticulated roller (6) is erected between the first support frame (3) and the second support frame (4). Tooth plates (7) and T-shaped chutes (8) are respectively installed on both inner walls of the first chamber (A). The tooth plates (7) are arranged parallel to the T-shaped chutes (8), and a cleaning assembly (9) is movably arranged between the tooth plates (7) and the T-shaped chutes (8). The cleaning assembly (9) includes a first cleaning assembly (90) and a second cleaning assembly (91). The first cleaning assembly (90) is also connected to an imaging assembly (10). A controller (11) and a display (12) are fixedly installed outside the cleaning box (1). The controller (11) is respectively in signal connection with the speed regulating motor (5), the first cleaning assembly (90), the second cleaning assembly (91), the imaging assembly (10), and the display (12).

2. The anilox roll cleaning system according to claim 1, wherein A box cover (13) is movably installed on the top of the cleaning box (1) through a hinge. An observation window (14) and a handle (15) are also arranged on the box cover (13). Support columns (16) are also arranged at the four corners of the bottom of the cleaning box (1). A servo motor (17) and a base (18) are fixedly installed at both ends of the slide rail (2). A lead screw (19) is fixedly installed at the output end of the servo motor (17). The first support frame (3) is sleeved on the lead screw (19). The distal end of the lead screw (19) is cooperatively installed with the base (18). Arc-shaped limiting plates (20) are movably installed on both the first support frame (3) and the second support frame (4). The output end of the speed regulating motor (5) is connected to a hollow shaft (21). A number of pre-tightening screws (22) are movably installed on the hollow shaft (21).

3. The anilox roll cleaning system according to claim 1, characterized in that, A water storage tank (23), a recycling box (24), and a water purifier (25) are also arranged inside the second chamber (B). The recycling box (24) is connected to a water outlet (26) through a pipeline. The recycling box (24) is also connected to the water purifier (25) through a pipeline. The water purifier (25) is also connected to the water storage tank (23). The water storage tank (23) is connected to an external pipeline through a water inlet pipe (27). A water pump (28) is arranged inside the water storage tank (23). The water pump (28) is in signal connection with the controller (11). The output end of the water pump (28) is connected to a corrugated pipe (29). The other end of the corrugated pipe (29) is connected to the second cleaning assembly (91).

4. The anilox roll cleaning system according to claim 1, wherein, The first cleaning assembly (90) includes a circular ring (900), a connecting frame (901), a driving motor (902), a driving gear (903), a connecting arm (904), a T-shaped slider (905), and a cleaning mechanism (906). The circular ring (900) is sleeved on the anilox roll (6). One end of the circular ring (900) is fixedly connected to the connecting frame (901) and the connecting arm (904) respectively. The driving motor (902) is fixedly installed on the connecting frame (901). The connecting frame (901) is also connected to the imaging assembly (10). The driving motor (902) is also in signal connection with the controller (11). The output end of the driving motor (902) is fixedly installed with the driving gear (903). The driving gear (903) meshes with the toothed plate (7). The distal end of the connecting arm (904) is fixedly provided with the T-shaped slider (905). The T-shaped slider (905) is movably fitted in the T-shaped chute (8). The cleaning mechanism (906) is also fitted on the circular ring (900). The other end of the circular ring (900) is movably installed with a second cleaning assembly (91).

5. The anilox roll cleaning system according to claim 4, characterized in that, The cleaning mechanism (906) includes a nut (9060), an adjusting screw (9061), a spring (9062), a connecting sleeve (9063), and a cleaning plate (9064). A plurality of through holes are formed in the circular ring (900). A nut (9060) is fixedly arranged outside each through hole. The adjusting screw (9061) extends into the through hole, and the extending end is movably connected to the connecting sleeve (9063). The connecting sleeve (9063) is fixedly installed on the cleaning plate (9064). Two springs (9062) are fixedly connected to each cleaning plate (9064). The other end of each spring (9062) is fixedly connected to the inner wall of the circular ring (900), and the connecting sleeve (9063) is located between the two springs (9062).

6. The anilox roll cleaning system according to claim 5, characterized in that The cleaning plate (9064) is of an arc structure and the number is not less than four. A brush (30) is also arranged on one side of the cleaning plate (9064) facing the anilox roll.

7. The anilox roll cleaning system according to claim 4, characterized in that, The second cleaning assembly (91) includes a universal ball head (910), an electric cylinder (911), a telescopic rod (912), a circular ring water pipe (913), and an atomizing nozzle (914). Three universal ball heads (910) are fixedly arranged on the circumference of the end face of the circular ring (900). The end of each universal ball head (910) is connected to the bottom of the electric cylinder (911). Each electric cylinder (911) is in signal connection with the controller (11) respectively. The front end of the electric cylinder (911) is movably provided with the telescopic rod (912). The end of the telescopic rod (912) is movably connected to the circular ring water pipe (913). A plurality of atomizing nozzles (914) are fixedly installed on the inner circular wall of the circular ring water pipe (913).

8. The anilox roll cleaning system according to claim 4, wherein, The imaging component (10) includes a hollow square tube (100), a telescopic square tube (101), a fastening screw (102), a vertical rod (103), a lifting seat (104), a moving arm (105), a sleeve column (106), a camera (107) and a transmitter (108). One end of the hollow square tube (100) is fixed to one end of the connecting frame (901), and the fastening screw (102) is installed on the upper part of the hollow square tube (100). The telescopic square tube (101) is installed inside the hollow square tube (100). The distal end of the telescopic square tube (101) is vertically installed with the vertical rod (103). The lifting seat (104) is installed on the vertical rod (103). The lifting seat (104) is fixedly connected to the moving arm (105). The sleeve column (106) is vertically and fixedly installed on the moving arm (105). The camera (107) is fixedly installed at the bottom of the sleeve column (106). The transmitter (108) is fixedly installed at the top of the sleeve column (106). The transmitter (108) is signal-connected to the controller (11).

9. A cleaning method for an anilox roll cleaning system, characterized in that, Applied to the anilox roll cleaning system according to any one of claims 1-8, the method includes the following steps: S1: When the system is in use, first open the box cover (13), place one end of the shaft of the anilox roll (6) on the second support frame (4), and push the shaft of the anilox roll (6) into the hollow shaft (21). Then, through the controller (11), make the drive motor (902) work, so that the second cleaning component (91) and the first cleaning component (90) are successively sleeved on the anilox roll (6). S2: The controller (11) controls the servo motor (17) to work, so that the first support frame (3) moves axially to the right along the lead screw (19) until the first support frame (3) is located below the right end shaft of the anilox roll (6). Then manually close the arc-shaped limiting plates (20) on the first support frame (3) and the second support frame (4). Then adjust the position of each cleaning plate (9064) through the adjusting screw (9061) so that the brush (30) contacts the surface of the anilox roll (6). Finally, debug the imaging component (10) to reach the optimal position. S3: Cleaning operation. In this process, the controller (11) controls the drive motor (902) to move left or right along the toothed plate (7), so that the cleaning component (9) as a whole moves left or right on the anilox roll (6). At this time, the speed-regulating motor (5) and the water pump (28) also start to work. The speed-regulating motor (5) makes the anilox roll (6) start to rotate. The water pump (28) inputs the cleaning liquid into the circular water pipe (913) through the corrugated pipe (29). In this process, the circular water pipe (913) continuously changes its position and angle through the adjustment mechanism to perform multi-level cleaning on the cells of the anilox roll (6). After cleaning, it is brushed by the brush (30) until the cleaning is completely finished.

10. The cleaning method of the anilox roll cleaning system according to claim 9, characterized in that, The specific steps of the adjustment mechanism include: S30: Image acquisition. During the cleaning process, the image Q of the anilox roll (6) is acquired in real time through the camera (107) S , and is fed back to the controller (11) through the transmitter (108). At the same time, the controller (11) displays the image Q S intuitively on the display (12), so that the ink residue inside the cells can be observed; S31: Image processing. The controller (11) processes the acquired image Q S , removes noise from the image Q through the preprocessing unit S , and then segments it into different sub-images Q ZS . Then, each sub-image Q ZS is marked with different coordinate regions A K . Meanwhile, the shadow morphological features F K within each coordinate region A are obtained K . The shadow morphological features F K include F K1 and F K2 ; S32: Adjustment mechanism. In the next cleaning stroke, when the circular pipe (913) reaches the position of the anilox roller (6) corresponding to the specified sub-image Q ZS , first, according to different coordinate regions A K , while keeping the circular pipe (913) perpendicular to the anilox roller (6), the atomizing nozzle (914) is made to change the injection pressure and injection time at any time. At the same time, according to the shadow morphological features F K1 and F K2 , the controller (11) controls each electric cylinder (911) at any time, so that the stroke of the telescopic rod (912) of each electric cylinder (911) changes, thereby causing the circular pipe (913) to change at different angles, thus achieving efficient cleaning.

Images