Coating device for metal coating on surface of intaglio roller

Abstract

The utility model discloses a coating device for a metal coating on the surface of a gravure plate roller, relates to the technical field of coating of coatings of gravure plate rollers, reduces the difficulty of liquid treatment of a liquid receiving tray, and comprises a rail frame which is fixed on a plate roller conveying frame and is provided with two symmetrical rails; the movable frame is connected between the two rails in a sliding mode and provided with two parallel frame strips and a connecting strip, and the connecting strip is fixedly connected to one ends of the two frame strips; the liquid receiving disc set comprises a plurality of liquid receiving discs and a rotating frame, and the rotating frame is installed between the two frame strips of the movable frame; and the driving mechanism is used for driving the movable frame to move close to or away from the printing roller on the printing roller conveying frame in the rail direction, so that the liquid receiving disc reaches the position below the printing roller to receive liquid. According to different working procedures where the plate roller is located and the types of the liquid tanks, the corresponding liquid receiving plates can be replaced in time, and classified collection of different liquids is achieved.

Description

Technical Field

[0001] This application relates to the field of coating technology for gravure printing rollers, and in particular to a device for applying a metal coating to the surface of a gravure printing roller. Background Technology

[0002] In the printing industry, gravure printing rollers play a crucial role as key production equipment. Essentially, a gravure printing roller is a cylindrical component primarily made of steel. Based on its structural characteristics, it can be clearly divided into two types: rollers with shafts and rollers without shafts. In the manufacturing process, copper plating is first applied to the surface of the cylinder, followed by fine engraving of the desired pattern on the cylinder wall, and finally, a layer of chromium plating is applied. This completes all production processes, and the roller is ready for delivery to the printing plant for use.

[0003] In actual production, the metal coating process on the printing roller involves multiple steps. Specifically, the roller must first be transferred to a cleaning tank for thorough cleaning using hoisting equipment. After cleaning, the roller is hoisted to an electroplating tank for copper plating. Once copper plating is complete, the roller is finally hoisted onto a workbench and removed for further processing. However, throughout the entire hoisting and transport process—from cleaning in the cleaning tank to electroplating and finally to being hoisted onto the workbench—liquid inevitably drips onto the ground due to its surface.

[0004] In the prior art, utility model patent with patent publication number CN220406613U discloses a residual liquid collection device for copper plating of printing rollers. This device collects residual liquid dripping from the printing roller by moving the liquid collection tank tube below the gravity-directed extension surface of the printing roller after the processing of the printing roller is completed.

[0005] However, it cannot be ignored that the printing rollers need to pass through multiple liquid tanks containing different liquid materials during the actual production process, such as cleaning tanks and electrolysis tanks, and these tanks are made of different materials. Existing residual liquid collection technology only uses a common drip tray to collect dripping liquid, which has obvious drawbacks. Because the liquid composition and properties in different tanks vary greatly, mixed collection is not conducive to subsequent environmentally friendly treatment of different liquids, increasing the difficulty and cost of environmental treatment. Utility Model Content

[0006] To reduce the difficulty of liquid handling in the drip tray, this application provides a device for applying a metal coating to the surface of a gravure printing roller.

[0007] This application provides a metal coating device for the surface of a gravure printing roller, which adopts the following technical solution:

[0008] A metal coating device for gravure printing rollers includes a track frame fixed on a roller transport frame, having two symmetrical tracks; a movable frame slidably connected between the two tracks, having two parallel frame bars and a connecting bar, the connecting bar being fixedly connected to one end of the two frame bars; a liquid receiving tray assembly including several liquid receiving trays and a rotating frame, the rotating frame being installed between the two frame bars of the movable frame; and a drive mechanism for driving the movable frame to move along the track direction toward or away from the roller on the roller transport frame, so that the liquid receiving trays reach below the roller to receive liquid; wherein, the rotating frame includes two turntables and a circular rod circumferentially fixed between the two turntables, the liquid receiving trays being suspended on the circular rods; the two turntables are respectively rotatably connected to the two frame bars.

[0009] By adopting the above technical solution, and by setting a track frame, a movable frame, a liquid receiving tray assembly, and a drive mechanism on the printing roller transport frame, the liquid receiving tray can be flexibly moved to the underside of the printing roller for liquid collection. The track frame provides a moving track for the movable frame, which serves as the mounting base for the liquid receiving tray assembly. The liquid receiving tray assembly is mounted on the movable frame via a rotating frame, and the drive mechanism is responsible for moving the movable frame, ensuring the liquid receiving tray accurately reaches the underside of the printing roller for liquid collection. Furthermore, when the gravure printing roller moves between different liquid tanks, rotating the rotating frame aligns the corresponding liquid receiving tray with the printing roller, avoiding the problem of mixed collection.

[0010] Optionally, the drive mechanism includes a conveyor belt assembly and a connecting block; the conveyor belt assembly is mounted on a track and includes two conveyor rollers and a conveyor belt wrapped between the two conveyor rollers; one end of the connecting block is fixed to the conveyor belt, and the other end is fixedly connected to the frame strip; the drive mechanism also includes a linkage component that drives the two conveyor belts to rotate synchronously.

[0011] By adopting the above technical solution, a combination of conveyor belt assembly and connecting block is used. The transmission principle of the conveyor belt is utilized to achieve synchronous rotation of the two conveyor belts through the linkage, thereby driving the connecting block and movable frame to move stably along the track direction.

[0012] Optionally, a switching power assembly is also included to control the rotation of the rotating frame, thereby switching between the plurality of liquid receiving trays.

[0013] By adopting the above technical solution, a switching power component is introduced to control the rotation of the rotating frame and realize the switching between several liquid receiving trays.

[0014] Optionally, the switching power assembly includes a switching motor, which is fixed on the frame bar, and the output shaft of the switching motor is fixedly connected to the turntable.

[0015] By adopting the above technical solution, the switching motor directly drives the turntable to rotate, realizing the rapid switching of the liquid receiving tray.

[0016] Optionally, the switching power assembly includes a rack, with a groove formed on one side of the two tracks that are close to each other. The frame strip is slidably connected to the groove, and the rack is installed in the groove. A rotating shaft is coaxially fixed at the middle of the two turntables at their opposite ends. A synchronous shaft is rotatably connected inside the connecting strip. Belt rollers are fixed on both the synchronous shaft and the rotating shaft, and a belt is wrapped around the two belt rollers to achieve synchronous rotation. A toothed ring that meshes with the rack is rotatably connected to the opposite sides of the two frame strips. The toothed ring is coaxially arranged with the synchronous shaft. The switching power assembly also includes a one-way linkage component disposed between the toothed ring and the synchronous shaft. When the movable frame moves towards the printing roller, the toothed ring and the synchronous shaft are not linked. When the movable frame retracts away from the printing roller, the toothed ring and the synchronous shaft are linked, causing the turntable to rotate, thus switching the turntable in one direction.

[0017] By adopting the above technical solution, the design of this switching power component realizes the function of automatically switching the liquid receiving tray when the movable frame is retracted, thus improving the degree of automation.

[0018] Optionally, the linkage includes a one-way ratchet and a pawl. The one-way ratchet is circumferentially fixedly distributed on the inner wall of the toothed ring. The pawl is rotatably connected to the outer periphery of the synchronous shaft. An elastic element for pushing the pawl against the one-way ratchet is installed on the synchronous shaft.

[0019] By adopting the above technical solutions, the design of unidirectional ratchet and pawl ensures the linkage between the gear ring and the synchronous shaft under specific conditions, thereby improving the stability and reliability of the device.

[0020] Optionally, the bottom of the liquid receiving tray is provided with a drain outlet, and a one-way valve is connected to the drain outlet.

[0021] By adopting the above technical solution, a drain port is opened at the bottom of the liquid receiving tray and connected to a one-way valve, which can conveniently discharge the collected liquid.

[0022] Optionally, hooks are fixedly connected to both ends of the liquid receiving tray, and the liquid receiving tray is suspended on the round rod by the hooks.

[0023] By adopting the above technical solution, the liquid receiving tray is suspended on the round rod by hooks, which facilitates installation and disassembly and improves the ease of maintenance of the device.

[0024] In summary, this application includes at least one of the following beneficial effects:

[0025] By setting up multiple drip trays and switching power components, the appropriate drip tray can be replaced in a timely manner according to the different processes the printing roller is in and the type of liquid tank, achieving classified collection of different liquids. This effectively avoids liquid mixing, facilitates subsequent environmentally friendly treatment, and reduces treatment costs and difficulties. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in Example 1;

[0027] Figure 2 This is a schematic diagram of the track frame structure in Example 1;

[0028] Figure 3 This is a schematic diagram of the liquid receiving tray assembly in Example 1;

[0029] Figure 4 This is a schematic diagram illustrating the drive mechanism in Example 1;

[0030] Figure 5 This is a schematic diagram illustrating the structure of the liquid receiving tray in Example 1;

[0031] Figure 6 This is a schematic diagram of the overall structure in Example 2;

[0032] Figure 7 This is a schematic diagram illustrating the structure of the belt roller in Example 2;

[0033] Figure 8 This is an exploded schematic diagram illustrating the toothed ring in Example 2;

[0034] Figure 9 This is a schematic diagram of the unidirectional linkage component in Example 2.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Printing roller transport frame; 2. Gantry crane mechanism; 3. Clamping mechanism; 4. Track frame; 5. Track; 6. Slide chute; 7. Movable frame; 8. Frame strip; 9. Connecting strip; 10. Liquid receiving tray assembly; 11. Rotating frame; 12. Turntable; 13. Round rod; 14. Liquid receiving tray; 15. Hook; 16. Drain outlet; 17. One-way valve; 19. Conveyor belt assembly; 20. Connecting block; 21. Linkage component; 23. Switching motor; 24. Rack; 25. Rotating shaft; 26. Synchronous shaft; 27. Belt roller; 28. Belt; 29. ​​Toothed ring; 31. One-way ratchet; 32. Pad; 33. Elastic component. Detailed Implementation

[0037] The present application will be further described in detail below with reference to the accompanying drawings.

[0038] This application discloses a metal coating apparatus for the surface of a gravure printing roller. The following describes it in detail with reference to specific embodiments.

[0039] Example 1

[0040] Reference Figure 1 , 2The metal coating device for the surface of the gravure printing roller includes a roller transport frame 1, a track frame 4, a movable frame 7, a liquid receiving tray group 10, a drive mechanism, and a switching power component.

[0041] Reference Figure 1 The printing roller transport frame 1 includes a gantry hoisting mechanism 2 and a clamping mechanism 3 for fixing the printing roller. The gantry hoisting mechanism 2 is responsible for enabling the horizontal movement of the printing roller and the vertical movement of the clamping mechanism 3. The clamping mechanism 3 clamps both ends of the printing roller and ensures the stability and safety of the printing roller during transportation. The gantry hoisting mechanism 2 includes two guide rails fixed to the ceiling, a frame that slides on the guide rails, and a lifting component for driving the clamping mechanism 3 to slide. The clamping mechanism 3 is slidably connected to the frame, and the lifting component is connected to the clamping mechanism 3 by a high-strength steel wire rope.

[0042] The track frame 4 is fixed to the frame of the printing roller transport frame 1 and has two symmetrical tracks 5. The two tracks 5 provide a stable path for the sliding of the movable frame 7, ensuring that the movable frame 7 can move accurately in the predetermined direction.

[0043] Reference Figure 2 , 3 The movable frame 7 is slidably connected between two tracks 5. The movable frame 7 consists of two parallel frame bars 8 and a connecting bar 9. The connecting bar 9 is fixedly connected to one end of the two frame bars 8, making the movable frame 7 a single integrated structure. A groove 6 is provided on the side of the two tracks 5 that are close to each other, and the two frame bars 8 are slidably connected in the two grooves 6 respectively. The movable frame 7 serves as the mounting base for the liquid receiving tray assembly 10. The frame bars 8 can be made of rectangular steel pipes, and the connecting bar 9 can be welded from steel plates.

[0044] Reference Figure 2 , 3 The liquid receiving tray assembly 10 includes several liquid receiving trays 14 and a rotating frame 11. The rotating frame 11 is installed between two frame bars 8 of the movable frame 7, and includes two turntables 12 and a circular rod 13 circumferentially fixed between the two turntables 12. The liquid receiving trays 14 are suspended on the circular rod 13 by hooks 15 fixedly connected to their two ends. This installation method facilitates the installation and disassembly of the liquid receiving trays 14, and makes it convenient to clean or replace the liquid receiving trays 14 when needed. The number of liquid receiving trays 14 can be reasonably set according to the number and type of different liquid tanks in actual production.

[0045] Reference Figure 4 The drive mechanism drives the movable frame 7 to move along the track 5 toward or away from the printing roller on the printing roller transport frame 1, so that the liquid receiving tray 14 reaches below the printing roller to receive the liquid. The drive mechanism includes a conveyor belt assembly 19 and a connecting block 20. The conveyor belt assembly 19 is mounted on the track 5 and includes two conveyor rollers and a conveyor belt wrapped between the two conveyor rollers. One end of the connecting block 20 is fixed to the conveyor belt, and the other end is fixedly connected to the frame strip 8.

[0046] Reference Figure 2 , 4 The drive mechanism also includes a linkage 21 that drives the two conveyor belts to rotate synchronously. The linkage 21 can be fixedly connected to the conveyor rollers of the two conveyor belt groups 19 by means of a linkage rod. The two conveyor belts are driven to rotate by means of a motor controlling the rotation of the linkage rod, so as to ensure that the two conveyor belts can rotate synchronously and stably. When the conveyor belts rotate, the movable frame 7 is moved along the track 5 by means of the connecting block 20, thereby realizing the position adjustment of the liquid receiving tray 14.

[0047] Reference Figure 3 , 5 The switching power assembly controls the rotation of the rotating frame 11, enabling the switching between several receiving trays 14. The switching power assembly includes a switching motor 23, which is fixed to the frame bar 8, and its output shaft is fixedly connected to the turntable 12. When it is necessary to switch the receiving tray 14, the switching motor 23 starts, driving the turntable 12 to rotate via its output shaft, thereby achieving rapid switching of the receiving trays 14.

[0048] Reference Figure 5 The bottom of the liquid receiving tray 14 is provided with a drain port 16, and a one-way valve 17 is connected to the drain port 16. The function of the one-way valve 17 is to prevent liquid from flowing out. When the liquid receiving tray 14 collects a certain amount of liquid, the liquid can be discharged into a special collection container by opening the one-way valve 17 of the drain port 16 for subsequent processing.

[0049] Example 1: The implementation principle of a metal coating device for gravure printing rollers is as follows:

[0050] Before the coating operation on the printing roller begins, the movable frame 7 is moved to its initial position by the drive mechanism, putting the liquid receiving tray assembly 10 into standby mode. Based on the type and properties of the first liquid tank, the corresponding liquid receiving tray 14 is rotated to its working position using the switching power assembly, ensuring that it can accurately receive the liquid that is about to drip from the printing roller.

[0051] The printing roller transport frame 1 is activated to sequentially transport the printing rollers that have completed the previous process to the respective liquid tanks for processing. After the printing rollers are lifted out of the liquid tanks, the drive mechanism automatically drives the movable frame 7 to move along the track 5, so that the liquid receiving tray 14, which is in the working position, quickly reaches below the printing roller to collect the dripping liquid.

[0052] When the printing roller enters the next liquid tank for processing, the rotating frame 11 is controlled to rotate again by the switching power component according to the type of liquid in the liquid tank, and the next corresponding liquid receiving tray 14 is switched to the working position to receive the liquid dripping from the printing roller after it is lifted out of the liquid tank.

[0053] Example 2

[0054] The difference between Example 2 and Example 1 lies in the switching of the power component, as described above. Figure 6 , 7 The switching power assembly includes a rack 24. A groove 6 is provided on one side of the two tracks 5 that are close to each other. A frame bar 8 is slidably connected in the groove 6, and the rack 24 is installed in the groove 6. A rotating shaft 25 is coaxially fixed at the middle of the two turntables 12 at their far ends. A synchronous shaft 26 is rotatably connected inside the connecting bar 9. Belt rollers 27 are fixed on both the synchronous shaft 26 and the rotating shaft 25. A belt 28 is also wrapped around the two belt rollers 27 to achieve synchronous rotation of the two belt rollers 27.

[0055] Reference Figure 8 , 9 Two frame bars 8, located on opposite sides, are rotatably connected to a gear ring 29 that meshes with a rack 24. The gear ring 29 is coaxially arranged with the synchronous shaft 26. The switching power assembly also includes a one-way linkage 21 disposed between the gear ring 29 and the synchronous shaft 26. The one-way linkage 21 includes a one-way ratchet 31 and a pawl 32. The one-way ratchet 31 is circumferentially fixedly distributed on the inner wall of the gear ring 29. The pawl 32 is rotatably connected to the outer periphery of the synchronous shaft 26. An elastic element 33 is mounted on the synchronous shaft 26 to push the pawl 32 against the one-way ratchet 31. The elastic element 33 can be a spring or a sheet spring to drive the pawl 32 to abut against the one-way ratchet 31.

[0056] When the movable frame 7 moves towards the printing roller, the toothed ring 29 and the synchronous shaft 26 are not linked, allowing the movable frame 7 to move freely without affecting the normal liquid receiving position adjustment of the liquid receiving tray 14. When the movable frame 7 retracts away from the printing roller, the toothed ring 29 rotates under the action of the rack 24. Through the cooperation of the one-way ratchet 31 and the pawl 32, the toothed ring 29 is linked with the synchronous shaft 26, thereby driving the turntable 12 to rotate and realizing the rotation switching of the liquid receiving tray 14 in one direction. This switching method utilizes the retraction movement of the movable frame 7 to realize the function of automatically switching the liquid receiving tray 14, improving the automation level of the device and reducing energy consumption.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for coating the surface of a gravure roll with a metallic coating, comprising a roll transport frame (1) for transporting the roll in succession to a plurality of liquid tanks, characterized in that: Also include: Track frame (4) is fixed on plate roller transport frame (1), has two symmetrical tracks (5); Movable frame (7) is slidably connected between two tracks (5), has two parallel frame strips (8) and connecting strips (9), the connecting strips (9) are fixedly connected to one end of two frame strips (8); Liquid receiving disc group (10) includes a plurality of liquid receiving discs (14) and rotating frame (11), rotating frame (11) is installed between two frame strips (8) of movable frame (7); Driving mechanism for driving movable frame (7) to move along the direction of track (5) towards or away from plate roller on plate roller transport frame (1), so that liquid receiving disc (14) reaches the lower liquid receiving of plate roller; Wherein, rotating frame (11) includes two rotating discs (12) and circular rods (13) circumferentially fixedly distributed between two rotating discs (12), the liquid receiving disc (14) is hoisted on the circular rod (13); two rotating discs (12) are rotatably connected with two frame strips (8) respectively.

2. A device for coating the surface of a gravure roll with a metal coating according to claim 1, characterized in that: The driving mechanism includes a conveyor belt group (19) and a connecting block (20); the conveyor belt group (19) is installed on the track (5) and includes two conveying rollers and a conveyor belt wound between the two conveying rollers; the connecting block (20) is fixed at one end of the conveyor belt and fixedly connected with the frame strip (8) at the other end; the driving mechanism further includes a linkage member (21) for driving the two conveyor belts to rotate synchronously.

3. A device for coating the surface of a gravure roll with a metal layer according to claim 1, characterized in that: Also include switching power assembly for controlling the rotation of rotating frame (11) to switch between a plurality of liquid receiving discs (14).

4. A device for coating the surface of a gravure roll with a metal coating according to claim 3, characterized in that: The switching power assembly includes a switching motor (23), the switching motor (23) is fixed on the frame strip (8), and the output shaft of the switching motor (23) is fixedly connected with the rotating disc (12).

5. A device for coating the surface of a gravure roll with a metal layer according to claim 3, characterized in that: The switching power assembly includes a rack (24), the side of two tracks (5) close to each other is provided with a sliding groove (6), the frame strip (8) is slidably connected in the sliding groove (6), and the rack (24) is installed in the sliding groove (6); the middle part of the end of two rotating discs (12) away from each other is coaxially fixed with a rotating shaft (25), the connecting strip (9) is rotatably connected with a synchronous shaft (26), the synchronous shaft (26) and the rotating shaft (25) are fixedly provided with a belt roller (27), and a belt (28) is further wound between the two belt rollers (27) to realize synchronous rotation of the two belt rollers (27); the side of two frame strips (8) away from each other is rotatably connected with a gear ring (29) engaged with the rack (24), and the gear ring (29) is coaxially arranged with the synchronous shaft (26); the switching power assembly further includes a one-way linkage member (21) arranged between the gear ring (29) and the synchronous shaft (26), when the movable frame (7) moves towards the plate roller direction, the gear ring (29) is not linked with the synchronous shaft (26); when the movable frame (7) is recycled away from the plate roller direction, the gear ring (29) is linked with the synchronous shaft (26), so that the rotating disc (12) rotates, and the rotating disc (12) rotates in one direction to switch.

6. A device for coating the surface of a gravure roll with a metal coating according to claim 5, characterized in that: The linkage (21) comprises one-way ratchets (31) and pawls (32), the one-way ratchets (31) are fixedly distributed in the inner wall of the tooth ring (29) in a circumferential direction, the pawls (32) are rotatably connected to the outer circumferential side of the synchronous shaft (26), and the synchronous shaft (26) is provided with elastic members (33) for pushing the pawls (32) to abut against the one-way ratchets (31).

7. A device for coating the surface of a gravure roll with a metal coating according to claim 1, characterized in that: The bottom of the liquid receiving disc (14) is provided with a drain port (16), and the drain port (16) is connected with a one-way valve (17).

8. A device for coating the surface of a gravure roll with a metal coating according to claim 1, characterized in that: The two ends of the liquid receiving disc (14) are fixedly connected with hooks (15), and the liquid receiving disc (14) is hung on the round rod (13) through the hooks (15).

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