A polishing device and process for a pit anilox roller

Abstract

The present invention relates to the technical field of printing equipment, and in particular to a polishing device and process for a pit anilox roller. The present invention provides a polishing device for a pit anilox roller, comprising mechanical parts connected to each other, a control system for realizing automation, pneumatic parts, oil, water and gas pipelines, an ultrasonic device and electrical components. The present invention can polish the anilox roller body and perform comprehensive cleaning in various ways. The polishing of the present invention on various plate rollers changes the polishing marks, can conveniently and quickly change the fineness of sandpaper, improves the smoothness and polishing effect of the plate roller surface, does not leave residue on the plate roller, and increases the service life of the anilox roller body; improves the printing, transfer and coating effects. For the old plate roller that has been used, after polishing again, the transfer rate of the transferred object in the mesh pit is improved, so that the three-dimensional sense of the transferred object is more complete; and the service life of the scraper, the extrusion roller and the roller body is extended. The present invention has a good effect on treating various washing liquids and meets environmental protection requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of printing equipment, and in particular relates to a polishing device and a process for a pit anilox roller. Background Art

[0002] Gravure printing is one of the basic printing methods. Printing Gravure printing is abbreviated as gravure printing, which is one of the four major printing methods. During printing, the ink is filled into the pits, and the ink on the surface of the printing plate is scraped off with a scraper. There is a certain pressure contact between the printing plate and the substrate, and the ink in the pits is transferred to the substrate to complete the printing. As a printing process, gravure printing occupies an extremely important position in the fields of printing and packaging, printing and dyeing, and graphic publishing due to its advantages such as thick ink layer of printed products, bright colors, high saturation, high printing plate durability, stable print quality, and fast printing speed. In China, gravure printing is mainly used for flexible packaging printing. With the development of domestic gravure printing technology, it has also been widely used in plastic flexible packaging, wood grain decorative paper, leather materials, pharmaceutical packaging and iron printing.

[0003] However, there are some unresolved problems in current gravure printing, such as the inability to simultaneously perform comprehensive cleaning of the plate roller in gravure printing, the coating roller, the glue roller, the ceramic roller, etc. in the post-printing process. Due to the wear of the scraper blade or defects in the roller polishing process, the surface polishing of the plate roller is not fine enough; or the polishing marks overlap with the scraping direction marks of the ink scraper.

[0004] At present, in China and abroad, the cleaning method used in the process of cleaning coating rollers, glue rollers and special gravure printing plates is single, and it is not possible to use multiple combined methods in one device or cleaning process. The existing problems are: a single cleaning method is often difficult to determine the cleaning of solidified materials or residues in the deep part of the mesh pit or at the bottom angle; in the past, single cleaning also had the problem of incompleteness; the anilox roller could only be de-plated or scrapped, resulting in high costs; after a long period of use, the residual material in the mesh pit cannot be thoroughly cleaned, making it difficult to clean after drying, causing the plate roller, coating roller, and glue roller to wear severely, and even to be scrapped prematurely; the waste liquid treatment still does not meet environmental protection requirements and many other problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a polishing device and process for a pit anilox roller. Through the device and the provided cleaning process, the cleaning process can be combined according to the characteristics of the residual substances to achieve the purpose of thorough cleaning, which not only saves cleaning time, but also reduces product scrapping caused by incomplete cleaning. The present invention also realizes a variety of comprehensive cleaning treatments. By setting a polishing treatment device and process for the anilox roller body, the cleaned anilox roller body will not leave residues on the plate anilox roller body, thereby improving the service life of the anilox roller body; it also improves the efficiency and effect of various immersion waste liquid treatments by setting a negative pressure device, meeting environmental protection requirements.

[0006] To achieve the above-mentioned purpose of the invention, the present invention provides a polishing device for a pit anilox roller, comprising mechanical parts connected to each other, a control system for realizing automation, hydraulic parts, pneumatic parts, oil, water and gas pipelines, ultrasonic devices and electrical components, the polishing device comprising an immersion tank arranged at the lower side of a frame, a return liquid pipeline and a lifting mechanism are arranged at the bottom of the immersion tank, a liquid supply pipeline is arranged at the upper part of the immersion tank, which are respectively connected with an ultrasonic washing liquid tank, a water tank, an oil tank, an ethanol tank and a solution tank, a liquid supply pump is arranged on the liquid supply pipeline, a liquid return valve is arranged on the liquid return pipeline and is connected with a distillation tank, a steam outflow pipe is arranged at a position above the liquid level of the distillation tank and is connected with a cooling tank, and the cooling tank is respectively connected with the top of the ultrasonic washing liquid tank, the water tank, the oil tank, the ethanol tank and the solution tank through a shunt pipe, so as to realize environmentally friendly recovery of immersion liquid and supply liquid to the immersion tank; a first hydraulic cylinder and a second motor are respectively arranged on the frame on both sides of the immersion tank, the first hydraulic cylinder is arranged on the first hydraulic cylinder bracket and at the end A clamp for clamping the anilox roller body is provided at the position, the second lead screw on the second motor is connected to the electric clamping device, the end position of the electric clamping device is provided with a clamp for clamping the anilox roller body, a polishing head, a spray part and a blowing part are respectively provided on the upper side of the anilox roller body, the polishing head is fixedly connected to the motor shaft of the first motor, the lower side of the polishing head is provided with polishing sandpaper or a metal brush, a lifting platform for lifting the polishing head is provided on the motor shaft, the lifting platform is fixedly connected to the synchronous belt and realizes synchronous movement with the rotation of the anilox roller body through a moving block, the synchronous belt is fixedly connected to the frame through a belt seat body, a first lead screw connected through a lead screw seat is provided on the upper side of the immersion tank, a first nozzle for spraying oil, a second nozzle for spraying solution, a third nozzle for spraying water and a fourth nozzle for blowing are respectively provided on the first lead screw, the first nozzle and the second nozzle are arranged on the spray part, the third nozzle and the fourth nozzle are arranged on the blowing part, and the spray part and the blowing part are symmetrically arranged.

[0007] According to a preferred technical solution, the bristles of the metal brush are made of steel wire or copper wire.

[0008] According to a preferred technical solution, valves are provided on the shunt pipes to communicate with the ultrasonic cleaning liquid tank, the water tank, the oil tank, the ethanol tank and the solution tank.

[0009] A preferred technical solution is that the distillation tank comprises an upper cover and a tank body which are tightly connected to each other, a safety valve is provided on the top of the upper cover, an inner cavity is provided on the side wall of the tank body, an electric heating tube for heating the thermal oil and a thermocouple for measuring and controlling the temperature are provided in the inner cavity, a liquid level limit sensor is provided on the side wall of the distillation tank, a waste liquid inlet is provided at the bottom of the tank body, and the waste liquid inlet is arranged horizontally or tilted upward.

[0010] According to a preferred technical solution, an air pump is provided on the liquid return pipeline, and the air pump is used to blow air into the waste liquid in the distillation tank to make it tumble and accelerate the distillation.

[0011] A preferred technical solution is that a cooling inner cavity is provided inside the tank body of the cooling tank, the cooling inner cavity is provided with a coil and filled with cold water for condensation, the inlet of the coil is connected to the steam outflow pipe, the flow outlet of the coil is connected to a diversion pipe with a vacuum pump outside, and the cooling inner cavity is connected to the cooling circulation pipeline of the refrigerator for refrigeration.

[0012] According to a preferred technical solution, the waste liquid inlet is inclined upward at an angle ranging from 30° to 65°.

[0013] The preferred technical solution is that a third hydraulic cylinder fixedly connected to the frame is provided at the lower side of the anilox roller body, and a third hydraulic rod on the third hydraulic cylinder reciprocates to drive a storage groove made of soft material to receive debris polished by the polishing head;

[0014] A second hydraulic cylinder fixedly connected to the frame is provided on the upper side of the anilox roller body, a seat body is mounted on the end of a second hydraulic rod for up and down lifting movement of the second hydraulic cylinder, a handle on the seat body can be rotated to adjust the angle of the plane, a digital camera fixedly connected via a serpentine tube is provided on the seat body, the digital camera is electrically connected to the display screen on the console and data is transmitted via a PLC machine.

[0015] The present invention also provides a process for a polishing device using a pit anilox roller, the process comprising the following steps:

[0016] Step 1: Use the human-machine interface of the PLC to set the parameters of the polishing equipment, and then use the clamps on the first hydraulic cylinder and the electric clamping device to clamp the anilox roller;

[0017] Step 2: Use the lifting mechanism to raise the immersion tank, partially immerse the anilox roller body in the immersion tank, close the cover of the immersion tank to seal it, start the second motor to rotate the anilox roller body for cleaning; after cleaning for 1-10 minutes, use the lifting mechanism to lower the immersion tank, and then use the nozzle to clean the anilox roller body, and after cleaning, use the blowing part to blow dry the anilox roller body;

[0018] Step 3) After the anilox roller is dried, the polishing head is lowered using a lifting platform. After the polishing head and the anilox roller are pressed tightly, the third hydraulic cylinder is started to extend the third hydraulic rod. The third hydraulic rod drives the storage groove to move to the lower side of the anilox roller to hold the polished debris. The first motor and the second motor are started to rotate simultaneously to polish the anilox roller to form a double C-shaped pattern. The polishing time is set according to the depth of the pits on the anilox roller surface. After the polishing is qualified, the first motor is turned off;

[0019] Step 4) Open the nozzle, use a solvent or solution to clean the anilox roller for a second time to wash away the remaining impurities, and use the nozzle on the blowing part to dry the anilox roller for a second time;

[0020] Step 5) Open the spraying part to spray the dried anilox roller with protective oil. After the protective oil treatment is qualified, use a robot to coat the anilox roller, and then pack the roller with corrugated paper for storage;

[0021] Step 6) Performing environmental treatment on the waste liquid in the immersion tank, opening the valve on the liquid return pipeline to allow the immersion liquid to enter the distillation tank for distillation treatment, turning on the negative pressure air pump to roll the immersion liquid in the distillation tank, and allowing the immersion liquid after distillation treatment to flow into the cooling tank through the steam outflow pipe for condensation treatment;

[0022] Step 7) The immersion liquid that has been condensed in step 6 is diverted to the ultrasonic cleaning liquid tank, water tank, oil tank, ethanol tank, and solution barrel by opening different valves according to the type of immersion liquid, and then the liquid supply pump on the liquid supply and return pipeline is turned on to supply liquid to the immersion tanks according to the type of immersion liquid to be used.

[0023] According to a preferred technical solution, in step 3) of the process, the pressure ranges for pressing the polishing head and the anilox roller body are as follows: high pressure range is 0.4-0.6 MPa, medium pressure range is 0.2-0.4 MPa, and low pressure range is less than 0.1 MPa.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention can perform comprehensive cleaning of the plate roller, coating roller, ceramic roller or glue roller in gravure printing in various ways;

[0026] 2. The present invention can polish various plate rollers with good effect, and will not leave residue on the pit anilox roller, thus increasing its service life;

[0027] 3. The present invention performs environmentally friendly treatment on various immersion liquids with good effects, meeting environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural front view of the polishing device of the pit anilox roller of the present invention;

[0029] Figure 2 yes Figure 1 A side view of the structure;

[0030] Figure 3 yes Figure 2 Another structural diagram of ;

[0031] Figure 4 yes Figure 1 Internal structure diagram of distillation tank and cooling tank;

[0032] Figure 5 Figure 1 Another internal structure diagram of the distillation tank and cooling tank

[0033] Figure 6 It is a schematic diagram of the working state of the anilox roller in the prior art;

[0034] Figure 7 It is a schematic diagram of the working state of the rubber pressure roller and the scraper in the prior art;

[0035] Figure 8 This is a schematic diagram of the C-shaped pattern polishing principle effect in the present invention;

[0036] Fig. 9 yes Figure 6 and Figure 7 Schematic diagram of the effect of the rubber roller and the scraper;

[0037] Fig.10 It is a schematic diagram of the polishing principle and effect of the thread pattern of the present invention.

[0038] Reference numerals

[0039] In the figure, 1 is a lifting mechanism; 2 is an immersion tank; 3 is an anilox roller; 4 is polishing sandpaper; 41 is a metal brush; 5 is a polishing head; 6 is a motor shaft; 7 is a lifting platform; 8 is a first motor; 9 is a spraying part; 91 is a spraying part; 92 is a second spray head; 93 is a third spray head; 94 is a fourth spray head; 10 is a first lead screw; 11 is a blowing part; 12 is a film roll; 13 is a frame; 131 is a handle; 1311 is a seat; 1312 is a serpentine tube; 1313 is a second hydraulic rod; 1314 is a second hydraulic cylinder; 132 is a digital camera; machine, 133—display screen, 134—storage tank, 135—third hydraulic rod, 136—third hydraulic cylinder; 14—return liquid pipeline, 141—air pump; 15—distillation tank, 151—waste liquid inlet, 152—tank cavity, 153—tank body, 154—liquid level sensor, 155—thermocouple, 156—upper cover, 157—safety valve, 158—steam outflow pipe, 159—electric heating pipe; 16—cooling tank, 161—coil, 162—tank body, 163—cooling cavity, 164—refrigeration machine; 17—valve; 1 8—shunt pipe; 19—ultrasonic cleaning liquid tank; 20—water tank; 21—oil tank; 22—ethanol tank; 23—solution tank; 24—vacuum pump; 25—liquid supply pump; 26—liquid return valve; 27—liquid supply and return pipeline; 28—first hydraulic cylinder; 29—first hydraulic cylinder bracket; 30—screw seat; 31—belt seat body; 32—synchronous belt, 33—moving block, 34—electric clamping device, 35—second motor, 36—second screw, 37—clamp; A1—raw material liquid, A2—coating roller, A3—pressing roller, A4—material Material, A5—dosing roller; B1—printing material, B2—gluing roller, B3—scraper, B4—anilox roller, B5—glue; C1—first C-type grain, C2—second C-type grain, C3—residue, C4—first intersection, C5—second intersection, C6—third intersection, C7—fourth intersection, C8—fifth intersection; E1—first grain, E2—second grain, E3—third grain; F1—first straight line scratch, F2—second straight line scratch, F3—residue, F4—first intersection, F5—scratch, F6—second intersection. DETAILED DESCRIPTION

[0040] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0041] Example 1

[0042] like Figure 1-2As shown, the present invention provides a polishing device for a pit anilox roller, comprising mechanical parts connected to each other, a control system for realizing automation, hydraulic equipment, pneumatic parts, oil, water and gas pipelines, ultrasonic cleaning devices and electrical parts, wherein the motor is a servo motor, and the control system is provided with a touch screen and a PLC machine with a human-machine interface. Among them, a spray device and an immersion device are also provided, and the ultrasonic cleaning device uses an acoustic wave oscillation method to separate the pits or pit residues on the anilox roller body 3. In this embodiment, the anilox roller body 3 is a gravure roller, an anilox coating roller, an anilox ceramic roller or an anilox glue roller. Among them, the spray device uses water, solvent or solution to clean the anilox roller body 3, and the immersion device uses a mixture of ethyl acetate, ethanol and / or solution to clean. In this embodiment, the specific structure of the polishing device includes an immersion tank 2 arranged on the lower side of the frame 13 and a third hydraulic cylinder 136 on the frame 13, and the third hydraulic rod 135 on the third hydraulic cylinder 136 drives the storage tank 134 made of soft material to move back and forth under the anilox roller body 3. The immersion tank 2 is made of stainless steel, the length of the immersion tank 2 is 600mm-1600mm, the width is 300mm-800mm, the depth is 150mm-300mm, the diameter of the anilox roller body 3 is 150mm-300mm, and the size of the immersion tank 2 is matched with the size of the anilox roller body 3. The immersion tank 2 is used to hold the cleaning liquid and receive the residues after cleaning. In this embodiment, a liquid return pipeline 14 and a lifting mechanism 1 are provided at the bottom of the immersion tank 2, and a liquid supply pipeline 27 is provided at the upper part of the immersion tank 2, which are respectively connected to the ultrasonic washing liquid tank 19, the water tank 20, the oil tank 21, the ethanol tank 22, and the solution tank 23. A liquid supply pump 25 is provided on the liquid supply pipeline 27. When the liquid supply pump 25 is turned on, it can provide qualified immersion liquid for the ultrasonic washing liquid tank 19, the water tank 20, the oil tank 21, the ethanol tank 22, and the solution tank 23; a liquid return valve 26 is provided on the liquid return pipeline 14 and is connected to the distillation tank 15, and the distillation tank 15 is provided with a steam outflow pipe 158 at a position above the liquid level, and the steam outflow pipe 158 is connected to the cooling tank 16, and valves 17 are provided on the diverter pipe 18 and are connected to the ultrasonic washing liquid tank 19, the water tank 20, the oil tank 21, the ethanol tank 22, and the solution tank 23. Among them, the cooling tank 16 is connected to the top of the ultrasonic washing liquid tank 19, the water tank 20, the oil tank 21, the ethanol tank 22, and the solution tank 23 through the shunt pipe 18, so as to realize the environmentally friendly recovery of the immersion liquid and supply the immersion liquid to the immersion tank 2; the first hydraulic cylinder 28 and the second motor 35 are respectively provided on the frame 13 on both sides of the immersion tank 2, the first hydraulic cylinder 28 is arranged on the first hydraulic cylinder bracket 29 and a clamp 37 for clamping the anilox roller body 3 is provided at the end position, the second lead screw 36 on the second motor 35 is connected to the electric clamping device 34, and a clamp 37 for clamping the anilox roller body 3 is provided at the end position of the electric clamping device 34, and a polishing head 5, a spray part 9 and a blowing part 11 are respectively provided on the upper side of the anilox roller body 3.The polishing head 5 is fixedly connected to the motor shaft 6 of the first motor 8, and polishing sandpaper 4 is provided on the lower side of the polishing head 5. The rotation speed of the first motor 8 is consistent with that of the polishing head 5. The low speed range of the first motor 8 is 500-1000 rpm, the medium speed range is 1000-2000 rpm, and the high speed range is above 2000 rpm. The linear travel speed of the polishing head 5 is divided into three gears, the low-speed linear travel speed is 50~500mm / min, the medium-speed linear travel speed is 500~1000mm / min, and the high-speed linear travel speed is above 1000mm / min. The lower side of the anilox roller body 3 is provided with a third hydraulic cylinder 136 fixedly connected to the frame 13, and the third hydraulic rod 135 on the third hydraulic cylinder 136 reciprocates to drive the storage groove 134 made of soft material to receive the debris polished by the polishing head 5.

[0043] Among them, a second hydraulic cylinder 1314 fixedly connected to the frame 13 is provided on the upper side of the anilox roller body 3, and the end position of the second hydraulic rod 1313 for the up and down lifting movement of the second hydraulic cylinder 1314 is mounted with a seat body 1311. The handle 131 on the seat body 1311 can be rotated to adjust the angle of the plane. A digital camera 132 fixedly connected by a serpentine tube 1312 is provided on the seat body 1311. The serpentine tube 1312 can adjust the digital camera 132 to any angle position at a close distance. The digital camera 132 is electrically connected to the display screen 133 on the console and transmits data through the PLC machine, so as to facilitate the user to judge whether the operation meets the process requirements.

[0044] Another preferred structure, such as Figure 3 As shown, the lower side of the polishing head 5 can also be provided with a metal brush 41 to replace the sandpaper 4 to polish and clean the anilox roller body 3. The bristles of the metal brush 41 are made of steel wire or copper wire or can be used to quickly replace sandpaper of different thicknesses. Among them, a lifting platform 7 for lifting and lowering the polishing head 5 is provided on the motor shaft 6. The lifting platform 7 is fixedly connected to the synchronous belt 32 and realizes synchronous movement with the rotation of the anilox roller body 3 through the moving block 33. The synchronous belt 32 is fixedly connected to the frame 13 through the belt seat body 31. The upper side of the immersion tank 2 is provided with a first lead screw 10 connected through a lead screw seat 30. The first lead screw 10 is respectively provided with a first nozzle 91 for spraying oil, a second nozzle 92 for spraying solution, a third nozzle 93 for spraying water, and a fourth nozzle 94 for blowing air. The first nozzle 91 and the second nozzle 92 are arranged on the spray part 9, and the third nozzle 93 and the fourth nozzle 94 are arranged on the blowing part 11. The spray part 9 and the blowing part 11 are arranged in a symmetrical structure.

[0045] like Figure 4As shown, the distillation tank 15 comprises an upper cover 156 and a tank body 153 which are sealed and connected to each other. A safety valve 157 is provided on the top of the upper cover 156. An inner cavity is provided on the side wall of the tank body 153. An electric heating pipe 159 for heating the heat transfer oil and a thermocouple 155 for measuring and controlling the temperature are provided inside the inner cavity. A limit sensor 154 for limiting the liquid level is provided on the side wall of the distillation tank 15. When the limit sensor 154 senses that the liquid is full and reaches the upper limit of the liquid level limit, the limit sensor 154 transmits the signal to the PLC machine, and the PLC machine closes the valve on the liquid inlet pipe to prevent further input. Immersion; when the limit sensor 154 senses that the signal of liquid full is lower than the upper limit of the liquid level limit, the limit sensor 154 transmits the signal to the PLC machine, and the PLC machine keeps the valve on the liquid inlet pipe in an open state, and continues the working state of distillation and purification; a waste liquid inlet 151 is provided at the bottom of the tank body 153, and the waste liquid inlet 151 is provided with an upwardly inclined structure. The upwardly inclined structure of the waste liquid inlet 151 can keep the residue in the waste liquid at the bottom of the tank body 153 at all times. When the residue reaches a certain amount, open the upper cover 156 and clean out the residue in the waste liquid. In the preferred structure, the angle range of the upwardly inclined structure of the waste liquid inlet 151 is 30°-65°, and the angle of the upwardly inclined structure is 30°, 45°, 55°, 60° or 65°. In this embodiment, the angle of the upwardly inclined structure of the waste liquid inlet 151 is preferably 60°.

[0046] like Figure 5 As shown, another technical solution of the preferred structure is that a waste liquid inlet 151 is provided at the bottom of the tank body 153, and the waste liquid inlet 151 is horizontally arranged. The waste liquid inlet 151 is higher than the height of the residue in the waste liquid. When the residue reaches a certain amount, the upper cover 156 is opened to clean out the residue in the waste liquid.

[0047] Among the preferred structures of this embodiment, an air pump 141 is preferably provided on the liquid return pipeline 14, through which air is blown into the distillation tank 15, the waste liquid is blown, and the liquid to be distilled is blown into a tumbling state, so as to improve the efficiency and quality of distillation, realize negative pressure distillation, and play a low-energy distillation, high-efficiency, explosion-proof distillation, so as to achieve the purpose of energy saving and safe distillation.

[0048] like Figure 4 As shown, the specific structure of the cooling tank 16 includes: a cooling inner cavity 163 is provided inside the tank body 162 in the cooling tank 16, and cooling water is filled in the cooling inner cavity 163 for condensation, and a coil 161 is provided in the cooling inner cavity 163, and the inlet of the coil 161 is connected to the steam outflow pipe 158, and the outlet of the coil 161 is connected to the diversion pipe 18 with a vacuum pump 24 outside, and the cooling inner cavity 163 is connected to the cooling circulation pipeline of the refrigerator 164 for refrigeration and heat exchange, and the vacuum pump 24 can smoothly realize negative pressure distillation, which plays the role of low-energy distillation and high-efficiency distillation.

[0049] like Figure 1 As shown, the preferred technical solution in this embodiment is that a digital camera 132 is arranged on the frame 13, and the digital camera 132 is arranged on the frame 13 through a telescopic frame 131, and the telescopic frame 131 can be extended and positioned, and is used to check whether the anilox roller body 3 is cleaned, and at the same time, it also plays a role in checking whether the quality of the mesh pit is qualified. In order to achieve the purpose of checking whether the anilox roller body 3 is cleaned, a display screen 133 is provided on the control console 133 in this device, and the display screen 133 is arranged next to the human-machine interface touch screen of the PLC machine. The display screen 133 is electrically connected to the digital camera 132 for data transmission, and the polishing effect of the anilox roller body 3 is displayed in high definition, so as to achieve the purpose of easy observation.

[0050] At present, in the printing industry in China and abroad, each company has different products or production processes, such as gravure printing of printing and dyeing, printing paper, printing iron, flexible packaging film, etc. After gravure printing, the coating, gluing, impregnation, varnishing and other processes required for the later process will use gravure, such as coating rollers, gluing rollers, including ceramic rollers, etc., all belong to the process content of the pit-type anilox roller, and the various rollers used are of the same type. In the process of production, different blockages will occur. The present invention has made a diversified combination of cleaning process design in the cleaning process. The present invention provides a polishing device for the pit anilox roller. In the process of automatic programming of the PLC machine, according to the different process products of each enterprise, the combination cleaning methods of A, B, C, and D are respectively classified and designed, which effectively cleans the blockage of the pits caused by various processes, materials, and materials. The present invention mainly divides it into four types of combined cleaning, namely A, B, C and D. In the cleaning process of these four types, the first step of ultrasonic cleaning is indispensable, and a combined cleaning process is used at the same time. The process characteristics are that the materials used in different types of printing, coating, gluing and other processes are different, and the ultrasonic cleaning liquid needs special configuration. For example, for solvent-based printing or coating, the ultrasonic cleaning liquid needs to be configured with a solvent as the main material. For example, when using water-soluble ink or water-soluble adhesive, when configuring the ultrasonic cleaning liquid, a main formula cleaning liquid that is affinity with water is used. Among them, the ultrasonic cleaning liquid must be configured according to each different process.

[0051] The specific cleaning combination process is divided into the following four categories:

[0052] Category A: solvent-based printing, coating, gluing and other processes, which is also the largest category, mainly used for printing plastic films. The combined cleaning process is: ultrasonic cleaning + copper wire brushing + pickling. Pickling is to use 10% to 40% oxalic acid solvents. The preferred oxalic acid solvent ratio is 10%, 15%, 20%, 25%, 28%, 30%, 35% or 40%. In this embodiment, the oxalic acid solvent ratio is 28%, and this concentration of oxalic acid solvent has the best cleaning effect.

[0053] Category B: water-soluble ink printing, coating, gluing and other processes. It is also the largest category of paper printing. The combined cleaning process is: ultrasonic cleaning + high-pressure washing + replacement cleaning. The replacement cleaning is 70% detergent powder + 30% washing powder configured into a paste.

[0054] Category C: Light printing or direct printing processes such as printing and dyeing, iron printing, etc., where the mesh pit is not seriously clogged, and the combined cleaning process: ultrasonic + copper wire brush or steel wire brush cleaning.

[0055] Category D: The mesh pits are blocked by alcohol water printing, coating, and gluing processes. The combined cleaning process is: ultrasonic + copper wire brushing + high-pressure washing cleaning

[0056] According to the above cleaning process, the printing plate roller, coating roller, anilox roller, ceramic roller and other mesh-pit rollers can be effectively cleaned. The enterprises using it can save a lot of plate-making roller costs, save the time of plate-making rollers, and improve the delivery quality and production efficiency.

[0057] The above-mentioned cleaning process is cleaning: in the programming of the PLC machine in a polishing device using a pit anilox roller provided by the present invention, the cleaning process and combination scheme are set up, and according to different cleaning processes, the cleaning combination process scheme is input, adjusted or modified on the touch screen to adapt to the different cleaning process selections of each enterprise, which can simplify the cleaning process, make it effective, easy to operate, and can effectively and thoroughly solve the problem of blocked pits.

[0058] The present invention provides a process for a polishing device using a pit anilox roller, which specifically comprises the following steps:

[0059] Step 1: Use the human-machine interface of the PLC machine to set the parameters of the polishing equipment, and then use the first hydraulic cylinder 28 and the clamp 37 on the electric clamping device 34 to clamp the anilox roller body 3;

[0060] Step 2: Use the lifting mechanism 1 to lift the immersion tank 2, partially immerse the anilox roller body 3 into the immersion tank 2, close the cover of the immersion tank 2 to seal it, and start the second motor 35 to rotate the anilox roller body 3 for cleaning; after cleaning for 1-10 minutes, use the lifting mechanism 1 to lower the immersion tank 2, and then use the nozzle to clean the anilox roller body 3, and use the blowing part 11 to dry the anilox roller body 3 after cleaning; in this embodiment, for the problem that the angle at the bottom of the mesh pit is difficult to clean, two or three combined cleaning methods can be selected according to the cleaning difficulty to achieve the purpose of thorough cleaning. The specific cleaning method is: if the first two cleaning methods still cannot be thoroughly cleaned, the physical replacement method should be selected: 10%~50% washing powder is mixed with 90%~50% detergent powder, and 20~300g of water is added to each 1kg of mixed powder to make it into a paste or wet powder. At this time, the protective cover on the polishing equipment needs to be opened, and the operator wears rubber gloves, grabs the mixture and applies it to the roller surface of the anilox roller body 3, and then presses the mixture on the rotating roller surface with both hands to make the mixture enter the mesh pit on the roller surface. With continuous filling, the residue that has been soaked and softened during the previous cleaning process will be replaced, so as to achieve the purpose of thorough cleaning. If the method is used directly without the cleaning process described above, the residual solidified material cannot be replaced out of the mesh pit;

[0061] Step 3) After the anilox roller body 3 is dried, the polishing head 5 is lowered by using the lifting platform 7. After the polishing head 5 and the anilox roller body 3 are pressed tightly, the third hydraulic cylinder 136 is started to extend the third hydraulic rod 135. The third hydraulic rod 135 drives the receiving groove 134 to move to the lower side of the anilox roller body 3 to receive the polished debris. The first motor 8 and the second motor 35 are started to rotate simultaneously to polish the anilox roller body 3 to form a double C-shaped pattern. The polishing time is set according to the depth of the net pits on the anilox roller surface. After the polishing is qualified, the first motor 8 is turned off. The pressure ranges for pressing the polishing head 5 and the anilox roller body 3 are as follows: the high pressure range is 0.4~0.6 MPa, the medium pressure range is 0.2~0.4 MPa, and the low pressure range is less than 0.1 MPa.

[0062] Step 4) Open the nozzle, use a solvent or solution to perform a secondary cleaning on the anilox roller body 3 to wash away the remaining impurities, and use the nozzle on the blowing part 11 to perform a secondary drying on the anilox roller body 3;

[0063] Step 5) Open the spraying part 9 to spray the dried anilox roller body 3 with protective oil. After the protective oil treatment is qualified, use a robot to coat the anilox roller body 3, and then pack the anilox roller body 3 with corrugated paper for storage;

[0064] Step 6) Performing environmental treatment on the waste liquid in the immersion tank 2, firstly opening the valve 26 on the liquid return pipe 14 to allow the immersion liquid to enter the distillation tank 15 for distillation treatment, and then turning on the negative pressure air pump 24 to cause the immersion liquid in the distillation tank 15 to roll, and the immersion liquid after distillation treatment flows into the cooling tank 16 through the steam outflow pipe 158 for condensation treatment;

[0065] Step 7) The immersion liquid that has been condensed in step 6 is directed to the ultrasonic cleaning liquid tank, water tank, oil tank, ethanol tank, and solution tank respectively by opening different valves 17 according to the type of immersion liquid, and then the liquid supply pump 25 on the liquid supply and return pipeline 27 is turned on to supply liquid to the immersion tank 2 according to the type of immersion liquid used.

[0066] like Figure 6 and Fig. 9 As shown, the equipment in the prior art includes material A4 under the anilox roller A3, a coating roller A2 and a metering roller A5, the coating roller A2 and the metering roller A5 are in the raw material liquid A1, the coating roller A2 and the metering roller A5 rotate in the same direction, and the gap between them can be adjusted. When the coating roller A2 and the metering roller A5 are squeezed, the first straight line scratch F1 and the second straight line scratch F2 are generated due to the existing residue F3, and the first intersection F4 and the second intersection F6 of the first straight line scratch F1 and the second straight line scratch F2 are generated. Since the coating roller A2 and the metering roller A5 rotate in the same direction, the scratch F5 from the first intersection F4 to the second intersection F6 is a structure that gradually widens and deepens.

[0067] like Figure 7 and Fig. 9 As shown, another device in the prior art includes a printing material B1 under a glue pressing roller B2 and an anilox roller B4, a scraper B3 is provided on the anilox roller B4, the anilox roller B4 is coated with glue in a glue liquid B5 in a liquid tank, the anilox roller B4 rotates in the liquid tank, when the scraper B3 squeezes the anilox roller B4, a first straight line scratch F1 and a second straight line scratch F2 are generated due to the existing residue F3, and a first intersection F4 and a second intersection F6 of the first straight line scratch F1 and the second straight line scratch F2 are generated, and since the coating roller A2 and the metering roller A5 rotate in the same direction, the scratch F5 from the first intersection F4 to the second intersection F6 is a structure that gradually widens and deepens.

[0068] Figure 6 and Figure 7 The two devices will produce two longitudinal tracks that gradually become wider and deeper, and will also lead to cross-type polishing tracks. The marks left by the anilox roller are increasingly worn, and in severe cases, it may be scrapped.

[0069] In the polishing device for the pit anilox roller provided by the present invention, the polishing head 5 is driven by the first motor 8 to rotate to polish the anilox roller body 3, and the second motor 31 drives the anilox roller body 3 to rotate to polish the anilox roller body 3. The scratches caused by the residue C3 on the anilox roller body 3 constitute C-shaped patterns and / or spiral patterns of varying sizes and irregular shapes.

[0070] like Figure 8 As shown, the C-type pattern includes a first C-type pattern C1 and / or a second C-type pattern C2, and the generated intersections include a first intersection C4, a second intersection C5, a third intersection C6, a fourth intersection C7 and a fifth intersection C8, wherein the scratch gradually becomes thinner from the first intersection C4 to the second intersection C5; the scratch gradually becomes thinner from the third intersection C6 to the fourth intersection C7 and the fifth intersection C8 until it disappears.

[0071] like Fig.10 As shown, the thread pattern includes a first pattern E1, a second pattern E2 and / or a third pattern E3 that intersect each other. The intersection of the traces of the first pattern E1, the second pattern E2 and / or the third pattern E3 will be a large C-shaped pattern track or a small C-shaped pattern track. Positive or negative C-shaped patterns or thread patterns may also be produced. The track of the residue will be interrupted first and then smoothed. The scratches will gradually decrease until they disappear. No residual substances will be left, thereby improving the polishing effect and efficiency.

[0072] The preferred specific implementation modes and embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes and embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the concept of the present invention.

Claims

1. A polishing device for a pit anilox roller, comprising mechanical parts connected to each other, an automated control system, hydraulic parts, pneumatic parts, oil, water and gas pipelines, an ultrasonic device and electrical components, characterized in that: The polishing device comprises an immersion tank (2) arranged at the lower side of a frame (13); a liquid return pipeline (14) and a lifting mechanism (1) are provided at the bottom of the immersion tank (2); a liquid supply pipeline (27) is provided at the upper part of the immersion tank (2) and is respectively connected to an ultrasonic cleaning tank (19), a water tank (20), an oil tank (21), an ethanol tank (22), and a solution tank (23); a liquid supply pump (25) is provided on the liquid supply pipeline (27); a liquid return valve (26) is provided on the liquid return pipeline (14) and is connected to a distillation tank (15); an air pump (141) is provided on the liquid return pipeline (14); the air pump (141) is used to blow air into the waste liquid in the distillation tank (15) to make it tumble so as to accelerate distillation; a steam outflow pipe (158) is provided at a position above the liquid level of the distillation tank (15) and is connected to a cooling tank (16); the cooling tank (16) is connected to the cooling tank (16) through a shunt pipe (18 ) are respectively connected to the top of the ultrasonic cleaning liquid tank (19), the water tank (20), the oil tank (21), the ethanol tank (22), and the solution tank (23) to realize environmentally friendly recovery of the immersion liquid and supply liquid to the immersion tank (2); the shunt pipe (18) is respectively provided with a valve (17) to communicate with the ultrasonic cleaning liquid tank (19), the water tank (20), the oil tank (21), the ethanol tank (22), and the solution tank (23); a cooling inner cavity (163) is provided inside the tank body (162) of the cooling tank (16); the cooling inner cavity (163) is provided with a coil (161) and filled with cold water for condensation; the inlet of the coil (161) is connected to the steam outflow pipe (158); the outlet of the coil (161) is connected to the shunt pipe (18) provided with a vacuum pump (24) outside; the cooling inner cavity (163) is connected to the cooling circulation pipeline of the refrigerator (164) for refrigeration;A first hydraulic cylinder (28) and a second motor (35) are respectively provided on the frame (13) on both sides of the immersion tank (2); the first hydraulic cylinder (28) is arranged on a first hydraulic cylinder bracket (29) and is provided with a clamp (37) for clamping the anilox roller body (3) at the end position; a second lead screw (36) on the second motor (35) is connected to an electric clamping device (34); a clamp (37) for clamping the anilox roller body (3) is provided at the end position of the electric clamping device (34); a polishing head (5), a spraying part (9) and a blowing part (11) are respectively provided on the upper side of the anilox roller body (3); the polishing head (5) is fixedly connected to the motor shaft (6) of the first motor (8); a polishing sandpaper (4) or a metal brush (41) is provided on the lower side of the polishing head (5); a lifting and lowering part (11) is provided on the motor shaft (6); A lifting platform (7) for lowering the polishing head (5), the lifting platform (7) being fixedly connected to a synchronous belt (32) and realizing synchronous movement with the rotation of the anilox roller body (3) through a moving block (33), the synchronous belt (32) being fixedly connected to the frame (13) through a belt seat body (31), a first lead screw (10) connected through a lead screw seat (30) being provided on the upper side of the immersion tank (2), a first nozzle (91) for spraying oil, a second nozzle (92) for spraying solution, a third nozzle (93) for spraying water and a fourth nozzle (94) for blowing air being provided on the first lead screw (10), the first nozzle (91) and the second nozzle (92) being arranged on the spraying part (9), the third nozzle (93) and the fourth nozzle (94) being arranged on the blowing part (11), and the spraying part (9) and the blowing part (11) being symmetrically arranged; A third hydraulic cylinder (136) fixedly connected to the frame (13) is provided on the lower side of the anilox roller body (3); a third hydraulic rod (135) on the third hydraulic cylinder (136) reciprocates to drive a receiving groove (134) made of a soft material to receive debris polished by the polishing head (5); A second hydraulic cylinder (1314) fixedly connected to the frame (13) is provided on the upper side of the anilox roller body (3); a seat body (1311) is sleeved on the end of a second hydraulic rod (1313) for the second hydraulic cylinder (1314) to perform up and down lifting movements; a handle (131) on the seat body (1311) can be rotated to adjust the angle of the plane; a digital camera (132) fixedly connected via a serpentine tube (1312) is provided on the seat body (1311); the digital camera (132) is electrically connected to a display screen (133) on a control console and performs data transmission via a PLC machine.

2. The polishing device for the pit anilox roller according to claim 1, characterized in that: The bristles of the metal brush (41) are made of steel wire or copper wire.

3. The polishing device for the pit anilox roller according to claim 1, characterized in that: The distillation tank (15) comprises an upper cover (156) and a tank body (153) which are hermetically connected to each other; a safety valve (157) is provided on the top of the upper cover (156); an inner cavity is provided on the side wall of the tank body (153); an electric heating pipe (159) for heating thermal oil and a thermocouple (155) for measuring and controlling temperature are provided in the inner cavity; a limit sensor (154) for limiting the liquid level is provided on the side wall of the distillation tank (15); and a waste liquid inlet (151) is provided at the bottom of the tank body (153); the waste liquid inlet (151) is arranged horizontally or inclined upward.

4. The polishing device for the pit anilox roller according to claim 3, characterized in that: The waste liquid inlet (151) is tilted upward at an angle ranging from 30° to 65°.

5. The process of polishing equipment using a pit anilox roller according to any one of claims 1 to 4, characterized in that: The process comprises the following steps: Step 1: Use the human-machine interface of the PLC to set the parameters of the polishing equipment, and then use the first hydraulic cylinder (28) and the clamp (37) on the electric clamping device (34) to clamp the anilox roller body (3); Step 2: using the lifting mechanism (1) to lift the immersion tank (2), partially immersing the anilox roller body (3) in the immersion tank (2), closing the cover of the immersion tank (2) to seal it, and starting the second motor (35) to rotate the anilox roller body (3) for cleaning; after cleaning for 1-10 minutes, using the lifting mechanism (1) to lower the immersion tank (2), and then using the nozzle to perform high-pressure cleaning on the anilox roller body (3), and after cleaning, using the blowing unit (11) to dry the anilox roller body (3); Step 3) After the anilox roller body (3) is dried, the polishing head (5) is lowered using the lifting platform (7). After the polishing head (5) is pressed against the anilox roller body (3), the third hydraulic cylinder (136) is started to extend the third hydraulic rod (135). The third hydraulic rod (135) drives the storage groove (134) to move to the lower side of the anilox roller body (3) to contain the polished debris. The first motor (8) and the second motor (35) are started to rotate simultaneously to polish the anilox roller body (3) to form a double C-shaped pattern. The polishing time is set according to the depth of the mesh pits on the anilox roller surface. After the polishing is qualified, the first motor (8) is turned off. Step 4) opening the nozzle, using a solvent or solution to perform a secondary cleaning on the anilox roller body (3) to wash away the remaining impurities, and using the nozzle on the blowing part (11) to perform a secondary drying on the anilox roller body (3); Step 5) opening the spraying part (9) to perform protective oil spraying treatment on the dried anilox roller body (3); after the protective oil treatment is qualified, the anilox roller body (3) is coated with a film by a robot, and then the roller body is packaged with corrugated paper and put into storage; Step 6) treating the waste liquid in the immersion tank (2) in an environmentally friendly manner, opening the valve (26) on the liquid return pipeline (14) to allow the immersion liquid to enter the distillation tank (15) for distillation treatment, turning on the negative pressure air pump (24) to cause the immersion liquid in the distillation tank (15) to roll, and allowing the immersion liquid after distillation treatment to flow into the cooling tank (16) through the steam outflow pipe (158) for condensation treatment; Step 7) The immersion liquid that has been condensed in step 6 is directed to the ultrasonic cleaning liquid tank, water tank, oil tank, ethanol tank, and solution tank respectively by opening different valves (17) according to the type of immersion liquid, and then the liquid supply pump (25) on the liquid supply and return pipeline (27) is turned on to supply liquid to the immersion tank (2) respectively according to the type of immersion liquid to be used.

6. The process of polishing the pit anilox roller according to claim 5, characterized in that: In step 3) of the process, the pressure ranges for pressing the polishing head (5) and the anilox roller body (3) are as follows: the high pressure range is 0.4-0.6 MPa, the medium pressure range is 0.2-0.4 MPa, and the low pressure range is less than 0.1 MPa.

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