Coating printing machine for plates or coiled materials

Abstract

The utility model discloses a coating printing machine for plates or coiled materials, which comprises a frame, a turning roller and a back roller, and further comprises a first support, a first position adjusting device is arranged between the frame and the first support, a transfer printing roller is detachably and rotatably mounted on the first support, a second support is slidably mounted on the first support, and a second position adjusting device is arranged between the turning roller and the back roller. A second position adjusting device is arranged on the first support, a picking roller is further rotationally installed on the second support, a paint disc is arranged on the portion, below the picking roller, of the rack, a thickness fixing roller frame and a third position adjusting device are slidably installed on the second support, and a thickness fixing roller is rotationally arranged on the thickness fixing roller frame. A dropping pipette and a printing scraper device are further installed on the second support and located above the coating roller, and the dropping pipette is communicated with a liquid supply system. According to the coating printing machine, the printing roller or the coating roller can be simply replaced to realize the switching between printing and coating, so that the investment of equipment is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coating and printing of plates or coils, in particular to a coating and printing machine for plates or coils. Background Art

[0002] Currently, during the molding process of most aluminum-plastic panels or metal composite panels, paint or printing is applied to the surface of the panels or coils during operation to enhance their aesthetics. In 2014, the applicant applied for a coating machine for panels or coils, with patent publication number CN104190589A. This coating machine utilizes two coating mechanisms to apply paint to the surfaces of panels and coils without stopping the machine. Each coating mechanism includes a coating roller, a pick-up roller and a thickness-setting roller. The pick-up roller picks up the paint in the paint tray, and then uses the thickness-setting roller to apply the paint to the coating roller at a fixed thickness. Then, the coating roller and the backing roller cooperate to apply the paint to the surface of the plate or coil. Since coating and printing are two different processes, printing is to print patterns on the surface of the plate or coil. The amount of paint picked up from the paint tray by the pick-up roller is too large. Therefore, even if the printing roller is replaced, a clear pattern cannot be printed. Therefore, the current coating machine can only paint, and printing cannot be achieved even if the coating roller is replaced with a printing roller. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a coating and printing machine for plates or coils, which can switch between printing and coating by simply replacing the printing roller or the coating roller, thereby reducing equipment investment and lowering costs.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a coating and printing machine for plates or coils, comprising a frame, on which a steering roller and a backing roller are rotatably mounted, the coating and printing machine also comprises a first bracket slidably mounted on the frame and located outside the mounting seat of the backing roller, a first position adjustment device for driving the first bracket to approach or move away from the backing roller is provided between the frame and the first bracket, a transfer roller is detachably and rotatably mounted on the first bracket, a second bracket is slidably mounted on the first bracket, a coating roller is detachably and rotatably mounted on the second bracket, a second position adjustment device for driving the second bracket to slide is provided on the first bracket, and a picking roller is also rotatably mounted on the second bracket. The pick-up roller is located below the coating roller, and a paint tray is provided on the frame below the pick-up roller, the paint tray is filled with paint, and the roller surface of the pick-up roller is partially immersed in the paint; a thickness-fixing roller frame is slidably installed on the second bracket, and a third position adjustment device for driving the thickness-fixing roller frame to slide is installed on the second bracket, and a thickness-fixing roller is rotatably provided on the thickness-fixing roller frame, and the pick-up roller and the thickness-fixing roller are both in contact with the coating roller, and the sliding direction of the thickness-fixing roller frame and the second bracket is the same as the sliding direction of the first bracket, and a dropper and a printing scraper device that are used in printing but not in coating are also installed on the second bracket above the coating roller, and the dropper is connected to the liquid supply system.

[0005] As a preferred solution, a coating roller seat is fixedly mounted on the second bracket, and the coating roller is rotatably mounted on the coating roller seat. The printing scraper device includes a scraper seat fixed on the coating roller seat, a scraper fixed shaft is rotatably mounted on the scraper seat, a scraper assembly is fixed on the scraper fixed shaft, and a deflection adjustment device for driving the scraper fixed shaft to deflect is provided on the scraper seat.

[0006] As a preferred solution, a cleaning pipe and a cleaning scraper device for cleaning the transfer roller are provided on the first bracket above the transfer roller.

[0007] As a preferred solution, the backing roller is rotatably mounted on a backing roller seat, the backing roller seat is vertically slidably mounted on a mounting seat, and the mounting seat is provided with a backing roller position adjustment device for adjusting the vertical position of the backing roller seat.

[0008] As a preferred solution, the paint tray is fixedly mounted on the paint tray lifting seat, the paint tray lifting seat is vertically slidably mounted on the paint tray base, the paint tray base is fixed on the frame, an operating handwheel is rotatably mounted on the paint tray base, a worm is fixedly mounted on the axle of the operating handwheel, the worm is matched with a worm gear rotatably mounted on the paint tray base, a transmission gear is mounted on the worm gear shaft of the worm wheel, and a rack matched with the transmission gear is provided on the paint tray lifting seat.

[0009] As a preferred solution, a main bracket is also slidably mounted on the frame, the sliding direction of the main bracket is the same as the sliding direction of the first bracket, a main linear power device for driving the main bracket to slide is installed on the frame, the first bracket is slidably mounted on the main bracket, and the first position adjustment device is installed between the main bracket and the first bracket.

[0010] As a preferred solution, the pickup roller is rotatably mounted on a pickup roller seat, the pickup roller seat is vertically lifted and slidably mounted on the second bracket, and the first bracket is provided with a pickup roller height adjustment mechanism for adjusting the height of the pickup roller seat.

[0011] As a preferred solution, a limiting device is fixedly mounted on the pickup roller seat and is in contact with the bottom of the coating roller seat.

[0012] As a preferred solution, the limiting device includes a fixing bolt fixed to the top of the pickup roller seat, a vertical limiting rod is installed on the internal thread of the fixing bolt, and the top of the limiting rod is in contact with the bottom of the coating roller seat.

[0013] After adopting the above technical solution, the effect of the utility model is as follows: since the coating and printing machine includes a frame, a steering roller and a backing roller are rotatably mounted on the frame, the coating and printing machine also includes a first bracket slidably mounted on the frame and located outside the mounting seat of the backing roller, a first position adjustment device for driving the first bracket to approach or move away from the backing roller is provided between the frame and the first bracket, a transfer roller is detachably mounted on the first bracket, a second bracket is slidably mounted on the first bracket, a coating roller is detachably mounted on the second bracket, and a device for driving the second bracket to slide is provided on the first bracket. The second position adjustment device is further provided on the second bracket, on which a pick-up roller is rotatably mounted, and the pick-up roller is located below the coating roller. A paint tray is provided on the frame below the pick-up roller, and paint is contained in the paint tray, and the roller surface of the pick-up roller is partially immersed in the paint; a calibrating roller frame is slidably mounted on the second bracket, and a third position adjustment device for driving the calibrating roller frame to slide is installed on the second bracket, and a calibrating roller is rotatably mounted on the calibrating roller frame, and the pick-up roller and the calibrating roller are in contact with the coating roller, and the sliding direction of the calibrating roller frame and the second bracket is the same as that of the first bracket. The bracket is provided with a dropper and a printing scraper device above the coating roller, which are used during printing but not during coating. The dropper is connected to the liquid supply system. Therefore, when the printing operation is carried out, there is no paint in the paint tray, and the pick-up roller does not work at this time. The coating roller is replaced with the printing roller, and the dropper drips the paint on the printing roller. The printing scraper device is then used to evenly apply the paint on the printing roller. The printing roller contacts the transfer roller to transfer the pattern to the transfer roller, and the transfer roller and the backing roller cooperate with each other to print a clear pattern on the surface of the plate or coil. When the paint coating operation is carried out, directly The transfer roller is removed and paint is put into the paint tray. At this time, since the first bracket is on the side of the mounting seat, the first position adjustment device can be used to adjust the first bracket to move closer to the backing roller. Finally, the coating roller contacts the backing roller, and then the pick-up roller picks up the paint and transfers it to the coating roller. The coating roller contacts the thickness-fixing roller to achieve a fixed thickness of the paint, and finally the coating roller applies the paint to the surface of the plate or coil. Therefore, the coating and printing machine can switch between the coating and printing processes by simply disassembling and replacing the transfer roller and the printing roller, which saves equipment investment, has lower costs for one device, and is more flexible in process adjustment.

[0014] Since a coating roller seat is fixedly mounted on the second bracket, the coating roller is rotatably mounted on the coating roller seat, the printing scraper device includes a scraper seat fixed on the coating roller seat, a scraper fixing shaft is rotatably mounted on the scraper seat, a scraper assembly is fixed on the scraper fixing shaft, and a deflection adjustment device for driving the scraper fixing shaft to deflect is provided on the scraper seat. In this way, the deflection angle of the scraper can be adjusted using the deflection adjustment device. When printing, after the coating roller is replaced with a printing roller, the scraper can contact the roller surface of the printing roller, thereby controlling the film thickness of the paint and meeting the printing requirements of different depths.

[0015] Furthermore, since a cleaning pipe and a cleaning scraper device for cleaning the transfer roller are provided above the transfer roller on the first bracket, the transfer roller can be cleaned by the cleaning pipe and the cleaning scraper device when patterns of different colors need to be printed.

[0016] Since the back roller is rotatably mounted on the back roller seat, and the back roller seat is vertically slidably mounted on the mounting seat, the mounting seat is provided with a back roller position adjustment device for adjusting the vertical position of the back roller seat. Therefore, the height of the back roller seat can be adjusted by the back roller position adjustment device, and then the height of the back roller can be adjusted, so as to ensure that the transfer roller or coating roller contacts the surface of the plate or coil in the most suitable position, thereby further optimizing the coating or printing process.

[0017] Furthermore, since the paint tray is fixedly mounted on the paint tray lifting seat, the paint tray lifting seat is vertically slidably mounted on the paint tray base, the paint tray base is fixed on the frame, an operating handwheel is rotatably mounted on the paint tray base, a worm is fixedly mounted on the wheel shaft of the operating handwheel, the worm is matched with a worm gear rotatably mounted on the paint tray base, a transmission gear is mounted on the worm gear shaft of the worm gear, and a rack matched with the transmission gear is provided on the paint tray lifting seat. Therefore, the worm can be rotated by rotating the operating handwheel, thereby rotating the worm gear, and the worm gear and the rack are geared together, which can drive the paint tray up and down, thereby lowering and separating from the pick-up roller during the printing process, making the operation simpler.

[0018] Since a main bracket is also slidably installed on the frame, the sliding direction of the main bracket is the same as the sliding direction of the first bracket, a main linear power device for driving the main bracket to slide is installed on the frame, and the first bracket is slidably installed on the main bracket. The first position adjustment device is installed between the main bracket and the first bracket. In this way, when switching the printing process and the coating process, the main bracket can be directly driven to move by the main linear power device, and the switching process is faster.

[0019] Since the pick-up roller is rotatably mounted on the pick-up roller seat, and the pick-up roller seat is vertically lifted and slidably mounted on the second bracket, the first bracket is provided with a pick-up roller height adjustment mechanism for adjusting the height of the pick-up roller seat, so that the height of the pick-up roller can also be adjusted. When performing printing operations, the pick-up roller can be directly lowered to avoid contact between the pick-up roller and the printing roller. During painting, the contact force between the pick-up roller and the painting roller can be adjusted, thereby adjusting the amount of paint transfer between the two.

[0020] Furthermore, since the pick-up roller seat is also fixedly mounted with a limiting device that contacts and cooperates with the bottom of the coating roller seat, the limiting device can limit the height of the pick-up roller to avoid excessive squeezing between the pick-up roller and the coating roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a front view of an embodiment of the utility model;

[0023] Figure 2 yes Figure 1 An enlarged schematic diagram at point A;

[0024] Figure 3 It is a side view of an embodiment of the utility model;

[0025] Figure 4 It is a structural diagram of the components on the first bracket, the second bracket, and the main bracket;

[0026] Figure 5 It is a structural diagram of the paint tray lifting mechanism;

[0027] Figure 6 It is a structural diagram of a printing scraper device;

[0028] In the accompanying drawings: 1. Frame; 2. Mounting seat; 3. Steering roller; 4. Backing roller; 5. Backing roller seat; 6. Backing roller position adjustment device; 7. Transfer roller; 8. Coating roller; 81. Coating roller seat; 9. Thickness roller; 10. Pickup roller; 101. Pickup roller seat; 11. First bracket; 12. Second bracket; 13. Thickness roller frame; 14. First position adjustment device; 15. Second position adjustment device; 16. Third position adjustment device 17. Main bracket; 18. Main linear power device; 19. Paint tray; 20. Worm; 21. Operating handwheel; 22. Worm gear; 23. Rack; 24. Transmission gear; 25. Printing scraper device; 251. Scraper seat; 252. Scraper fixing shaft; 253. Scraper assembly; 254. Scraper control handwheel; 255. Drip tube; 26. Cleaning scraper device; 27. Pick-up roller height adjustment mechanism; 28. Limit rod. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below through specific embodiments.

[0030] like Figures 1 to 6 As shown, a coating and printing machine for plates or coils includes a frame 1, on which a steering roller 3 and a backing roller 4 are rotatably mounted, wherein the backing roller 4 is rotatably mounted on a backing roller seat 5, and the backing roller seat 5 is vertically slidably mounted on a mounting seat 2, and the mounting seat 2 is provided with a backing roller position adjustment device 6 for adjusting the vertical position of the backing roller seat 5, wherein the backing roller position adjustment device 6 adopts a screw lift, and a hand wheel is fixed on the operating screw of the screw lift, and the height of the backing roller 4 can be adjusted manually. Of course, the backing roller position adjustment device 6 can also adopt a motor and a screw lift to achieve height adjustment.

[0031] The coating and printing machine also includes a first bracket 11 slidably mounted on the frame 1 and located outside the mounting seat 2 of the backing roller 4. A first position adjustment device 14 is provided between the frame 1 and the first bracket 11 to drive the first bracket 11 closer to or away from the backing roller 4. Since the backing roller 4 has a certain length in this embodiment, there are two first brackets 11 and they are respectively located outside the mounting seat 2.

[0032] The transfer roller 7 is detachably mounted on the first bracket 11, the second bracket 12 is slidably mounted on the first bracket 11, and the coating roller 8 is detachably mounted on the second bracket 12. The first bracket 11 is provided with a second position adjustment device 15 that drives the second bracket 12 to slide, and the second bracket 12 is also rotatably mounted with a pick-up roller 10, and the pick-up roller 10 is located below the coating roller 8. A paint tray 19 is provided on the frame 1 below the pick-up roller 10, and paint is contained in the paint tray 19, and the roller surface of the pick-up roller 10 is partially immersed in the paint; a thickness roller frame 13 is slidably mounted on the second bracket 12, and a third position adjustment device 16 that drives the thickness roller frame 13 to slide is installed on the second bracket 12, and a thickness roller 9 is rotatably mounted on the thickness roller frame 13, and the pick-up roller 10 and the thickness roller 9 are both in contact with the coating roller 8, and the sliding direction of the thickness roller frame 13 and the second bracket 12 is the same as the sliding direction of the first bracket 11.

[0033] The first position regulating device 14 , the second position regulating device 15 and the third position regulating device 16 may be controlled manually by a screw-nut mechanism or by a motor.

[0034] A dropper 255 and a printing scraper device 25 used during printing but not during coating are also installed on the second bracket 12 above the coating roller 8. The dropper 255 is connected to the liquid supply system.

[0035] like Figure 3 and Figure 6 As shown, a coating roller seat 81 is fixedly mounted on the second bracket 12, and the coating roller 8 is rotatably mounted on the coating roller seat 81. The printing scraper device 25 includes a scraper seat 251 fixed on the coating roller seat 81, and a scraper fixed shaft 252 is rotatably mounted on the scraper seat 251. A scraper assembly 253 is fixed on the scraper fixed shaft 252, and a deflection adjustment device for driving the scraper fixed shaft 252 to deflect is provided on the scraper seat 251, wherein the deflection adjustment device also includes a scraper control handwheel 254, and the rotating rod of the scraper control handwheel 254 is perpendicular to the scraper fixed shaft 252. Therefore, a bevel gear transmission or a worm wheel 22 and a worm 20 can be used between the rotating rod of the scraper control handwheel 254 and the scraper fixed shaft 252 to achieve 90° transmission.

[0036] A cleaning pipe and a cleaning scraper device 26 for cleaning the transfer roller 7 are provided on the first bracket 11 above the transfer roller 7. In this embodiment, the cleaning pipe is used to clean the transfer roller 7, and the cleaning scraper device 26 has the same structure as the transfer scraper device.

[0037] In this embodiment, either the printing roller or the coating roller 8 is actually installed on the second bracket 12 .

[0038] like Figure 4 and Figure 5 As shown, the paint tray 19 is fixedly mounted on the paint tray 19 lifting seat, and the paint tray 19 lifting seat is vertically slidably mounted on the paint tray 19 base, and the paint tray 19 base is fixed on the frame 1, and an operating handwheel 21 is rotatably mounted on the base of the paint tray 19. A worm 20 is fixedly mounted on the axle of the operating handwheel 21, and the worm 20 is matched with a worm wheel 22 rotatably mounted on the base of the paint tray 19. A transmission gear 24 is mounted on the worm wheel 22 shaft of the worm wheel 22, and a rack 23 that cooperates with the transmission gear 24 is provided on the paint tray 19 lifting seat.

[0039] like Figure 3 and Figure 4 As shown, a main bracket 17 is also slidably mounted on the frame 1, and the sliding direction of the main bracket 17 is the same as the sliding direction of the first bracket 11. A main linear power device 18 for driving the main bracket 17 to slide is installed on the frame 1, and the first bracket 11 is slidably mounted on the main bracket 17. The first position adjustment device 14 is installed between the main bracket 17 and the first bracket 11. In this embodiment, the main linear power device 18 is driven by a cylinder or an oil cylinder.

[0040] like Figure 3 and Figure 4As shown, the pickup roller 10 is rotatably mounted on the pickup roller seat 101 , and the pickup roller seat 101 is vertically lifted and slidably mounted on the second bracket 12 . The first bracket 11 is provided with a pickup roller height adjustment mechanism 27 for adjusting the height of the pickup roller seat 101 .

[0041] The pick-up roller seat 101 is also fixedly mounted with a stopper device that abuts against the bottom of the coating roller seat 81. This stopper device comprises a fixing bolt secured to the top of the pick-up roller seat 101. A vertical stopper rod 28 is internally threaded and mounted within the bolt. The top of the stopper rod 28 abuts against the bottom of the coating roller seat 81. Rotating the stopper rod 28 allows the top of the stopper rod 28 to be adjusted, thereby adjusting the position of the stopper at different locations. The pick-up roller height adjustment mechanism 27 also utilizes a lead screw lift.

[0042] The air circuit system, motor and other actuators, gear transmission mechanism, and screw-nut mechanism mentioned in this embodiment are all conventional technologies. The specific structure and principle of the cylinder, motor and other transmission mechanisms and other designs are detailed in the "Mechanical Design Manual, Fifth Edition", the 28th edition of the fifth edition published in Beijing in April 2008. They belong to the prior art and their structures are clear. The SMC training textbook "Modern Practical Pneumatic Technology, 3rd Edition", published by the Machinery Industry Press on August 1, 2008, discloses in detail the vacuum components, gas circuits and program control, indicating that the air circuit structure in this embodiment is also existing technology and is clear. The book "Motor Drive and Speed ​​Regulation", published by the Chemical Industry Press on July 1, 2015, also describes the control of the motor and the limit switch in detail. Therefore, the circuit and air circuit connections are clear. The above-mentioned embodiments are only descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations made to the technical solution of the present invention without departing from the spirit of the present invention should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A coating and printing machine for plates or coils, comprising a frame on which a steering roller and a backing roller are rotatably mounted, characterized in that: The coating printing machine also includes a first bracket slidably mounted on the frame and located outside the mounting seat of the backing roller, a first position adjustment device that drives the first bracket to approach or move away from the backing roller is provided between the frame and the first bracket, a transfer roller is detachably mounted on the first bracket, a second bracket is slidably mounted on the first bracket, a coating roller is detachably mounted on the second bracket, a second position adjustment device that drives the second bracket to slide is provided on the first bracket, a pick-up roller is also rotatably mounted on the second bracket, the pick-up roller is located below the coating roller, and the frame is located at the pick-up roller. A paint tray is provided below, in which paint is contained, and the roller surface of the pickup roller is partially immersed in the paint; a thickness-fixing roller frame is slidably installed on the second bracket, and a third position adjustment device for driving the thickness-fixing roller frame to slide is installed on the second bracket, and a thickness-fixing roller is rotatably provided on the thickness-fixing roller frame, and the pickup roller and the thickness-fixing roller are in contact with the coating roller, and the sliding direction of the thickness-fixing roller frame and the second bracket is the same as the sliding direction of the first bracket, and a dropper and a printing scraper device that are used during printing but not used during coating are also installed on the second bracket above the coating roller, and the dropper is connected to the liquid supply system.

2. A coating and printing machine for plates or coils according to claim 1, characterized in that: A coating roller seat is fixedly mounted on the second bracket, and the coating roller is rotatably mounted on the coating roller seat. The printing scraper device includes a scraper seat fixed on the coating roller seat, a scraper fixing shaft is rotatably mounted on the scraper seat, a scraper assembly is fixed on the scraper fixing shaft, and a deflection adjustment device for driving the scraper fixing shaft to deflect is provided on the scraper seat.

3. A coating and printing machine for plates or coils according to claim 2, characterized in that: A cleaning pipe and a cleaning scraper device for cleaning the transfer roller are provided on the first bracket above the transfer roller.

4. A coating and printing machine for plates or coils according to claim 3, characterized in that: The backing roller is rotatably mounted on the backing roller seat, and the backing roller seat is vertically slidably mounted on the mounting seat. The mounting seat is provided with a backing roller position adjustment device for adjusting the vertical position of the backing roller seat.

5. A coating and printing machine for plates or coils according to claim 4, characterized in that: The paint tray is fixedly mounted on the paint tray lifting seat, and the paint tray lifting seat is vertically slidably mounted on the paint tray base. The paint tray base is fixed on the frame, and an operating hand wheel is rotatably mounted on the paint tray base. A worm is fixedly mounted on the axle of the operating hand wheel, and the worm is matched with a worm gear rotatably mounted on the paint tray base. A transmission gear is mounted on the worm gear shaft of the worm wheel, and a rack matched with the transmission gear is provided on the paint tray lifting seat.

6. A coating and printing machine for plates or coils according to claim 5, characterized in that: A main bracket is also slidably mounted on the frame, and the sliding direction of the main bracket is the same as the sliding direction of the first bracket. A main linear power device for driving the main bracket to slide is installed on the frame, and the first bracket is slidably mounted on the main bracket. The first position adjustment device is installed between the main bracket and the first bracket.

7. A coating and printing machine for plates or coils according to claim 6, characterized in that: The pickup roller is rotatably mounted on the pickup roller seat, the pickup roller seat is vertically lifted and slidably mounted on the second bracket, and the first bracket is provided with a pickup roller height adjustment mechanism for adjusting the height of the pickup roller seat.

8. A coating and printing machine for plates or coils according to claim 7, characterized in that: The pick-up roller seat is also fixedly mounted with a limiting device that contacts and cooperates with the bottom of the coating roller seat.

9. A coating and printing machine for plates or coils according to claim 8, characterized in that: The limiting device includes a fixing bolt fixed to the top of the pickup roller seat, a vertical limiting rod is installed on the internal thread of the fixing bolt, and the top of the limiting rod is in contact with the bottom of the coating roller seat.

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