A copper chloride etching device for a plate roller

Abstract

This utility model discloses a copper chloride etching device for printing rollers, relating to the field of gravure printing plate technology. It aims to solve the technical problem that current methods of sealing and wrapping structures cannot guarantee the etching process effect and efficiency. The device includes an etching tank, an adjustment mechanism at the rear end of the etching tank, and an etching mechanism mounted on the adjustment mechanism. The piston rod of the hydraulic device extends to a support plate and is mounted on a third mounting plate. The etching mechanism includes a spray box located at the front end of the third mounting plate. A fixing rod is symmetrically arranged at the lower end of the spray box, and an outer baffle is connected to the end of the fixing rod. An inner baffle is slidably installed inside the outer baffle. This utility model has the advantages of using spray etching, which, combined with the rotation of the printing roller, ensures uniform etching; the outer and inner baffles slide together to form a ring-shaped shield, preventing the etching liquid from spreading and splashing, eliminating the need for cumbersome sealing and wrapping; and adjustable position to adapt to different processing needs, improving etching accuracy and efficiency while reducing the scrap rate.

Description

Technical Field

[0001] This utility model relates to the field of gravure printing plate making technology, and more specifically, to a copper chloride etching device for printing rollers. Background Technology

[0002] In the field of gravure printing plate making technology, the copper chloride etching device for printing rollers plays a crucial role. It is the core equipment for achieving precise processing of cells and patterns on the surface of the printing roller. Through the chemical reaction between the copper chloride etching solution and the surface of the printing roller, the cell depth, shape, and pattern texture that meet the printing requirements can be formed on the printing roller, directly affecting the quality of subsequent printed products. It is widely used in many fields such as food packaging, tobacco and alcohol packaging, and publication printing.

[0003] During the etching process of printing rollers, a sealing structure is wrapped around the un-etched areas of the roller's outer surface before immersing it in an etching solution. This process is cumbersome and time-consuming, and the sealing performance of the structure is often difficult to guarantee, leading to leakage of the etching solution, diffuse corrosion, and increased production costs. Therefore, we propose a copper chloride etching device for printing rollers. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a copper chloride corrosion device for printing rollers to solve the technical problem that the current method of wrapping and sealing is difficult to guarantee the corrosion processing effect and efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a copper chloride etching device for printing rollers, comprising an etching tank, an adjustment mechanism disposed at the rear end of the etching tank, and an etching mechanism disposed on the adjustment mechanism. The adjustment mechanism includes a mounting frame disposed at the rear end of the etching tank, a screw rotatably mounted on the mounting frame, a moving block threadedly mounted on the screw, an inverted U-shaped support plate disposed at the upper end of the moving block, a hydraulic device disposed at the upper end of the moving block, a piston rod of the hydraulic device extending above the support plate and mounted on a third mounting plate, and the etching mechanism including a spray box disposed at the front end of the third mounting plate, fixed rods symmetrically disposed at the lower end of the spray box, an outer baffle connected to the end of the fixed rod, and an inner baffle slidably mounted inside the outer baffle.

[0006] Preferably, a first mounting plate and a second mounting plate are symmetrically arranged at the upper end of the corrosion tank. A cylinder is provided at the front end of the first mounting plate, and a rotating plate is rotatably mounted at the end of the piston rod of the cylinder. A rotating shaft is rotatably mounted at the rear end of the second mounting plate. A mounting sleeve is provided at the end of the rotating shaft and the front end of the rotating plate. A first motor for driving the rotating shaft is provided at the front end of the second mounting plate.

[0007] Preferably, the mounting bracket is C-shaped, and a second motor is provided at the end of the mounting bracket, with the output shaft of the second motor connected to the axis of the screw.

[0008] Preferably, the spray box is arranged in an arc shape along its long axis, and spray holes are evenly arranged at the lower end of the spray box. A delivery pump is provided at the upper end of the third mounting plate. The delivery pump is provided with an inlet pipe and a delivery pipe. The end of the inlet pipe is located in the corrosion liquid tank, and the end of the delivery pipe is connected to the spray box.

[0009] Preferably, the outer baffle includes a semi-circular first blocking part, the front end of the first blocking part is provided with an arc-shaped first mounting part, the lower end of the first mounting part is provided with a limiting groove, the inner wall of the limiting groove is provided with a ball, and the end of the first mounting part is provided with a plug interface communicating with the limiting groove.

[0010] Preferably, the inner baffle includes a semi-circular second blocking part, the front end of the second blocking part is provided with an arc-shaped second mounting part, the outer surface of the second mounting part is provided with an arc-shaped limiting part, the limiting part is slidably disposed in the limiting groove, and both ends of the limiting part are symmetrically provided with positioning plates, the positioning plates are made of elastic metal material, and the positioning plates include a first bending part and a second bending part, the first bending part is bent outward in an arc shape, and the second bending part is bent inward.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the design of a spray box structure, abandons the traditional immersion corrosion method and adopts a spray corrosion design. A pump draws the corrosion solution from the corrosion solution tank to the arc-shaped spray box, and then precisely sprays it onto the area to be processed on the printing roller through evenly distributed spray holes. This reduces the contact between the corrosion solution and non-processed areas. Combined with the printing roller rotation structure: a first motor drives the rotating shaft to rotate the printing roller, ensuring uniform contact of the corrosion solution with the area to be etched, guaranteeing the consistency of cell depth and shape, and improving the accuracy and stability of the corrosion process. Furthermore, the inner and outer baffle structure eliminates the cumbersome sealing process. Through the sliding cooperation of the outer and inner baffles, a ring-shaped shielding area can be quickly formed, avoiding the problems of corrosion solution waste and diffuse corrosion in traditional immersion methods. This corrosion processing method is convenient to operate, significantly shortens preparation time, and improves corrosion processing efficiency and results.

[0013] 2. This utility model also designs an outer baffle and an inner baffle structure. The first shielding part of the outer baffle and the second shielding part of the inner baffle form a ring wrap, with the inner ring fitting against the surface of the printing roller, which can effectively prevent the corrosive liquid from flowing laterally. At the same time, the arc-shaped shielding design can prevent the spray liquid from splashing, avoid corrosion of non-processing areas, and reduce the scrap rate. The double bending structure of the elastic positioning plate ensures a stable connection between the inner baffle and the outer baffle, improving the versatility and sealing reliability of the device. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0016] Figure 3 This is a cross-sectional view of the corrosion mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the outer baffle structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the inner baffle structure of this utility model;

[0019] Figure 6 This is a schematic diagram of one usage state of the present invention.

[0020] The following are the labeling instructions in the diagram: 101, Corrosion liquid tank; 102, First mounting plate; 103, Second mounting plate; 104, Cylinder; 105, Rotating plate; 106, Rotating shaft; 107, First motor; 108, Mounting sleeve; 200, Adjustment mechanism; 201, Mounting bracket; 202, Screw; 203, Second motor; 204, Moving block; 205, Support plate; 206, Hydraulic equipment; 207, Third mounting plate; 208, Conveying pump; 300, Corrosion mechanism; 301, Spray box; 302, Fixed rod; 303, Outer baffle; 3031, First shielding part; 3032, First mounting part; 304, Limiting groove; 305, Insertion interface; 306, Inner baffle; 3061, Second shielding part; 3062, Second mounting part; 307, Limiting part; 308, Positioning plate. Detailed Implementation

[0021] like Figures 1 to 6As shown, this utility model relates to a copper chloride etching device for printing rollers, including an etching tank 101, an adjustment mechanism 200 disposed at the rear end of the etching tank 101, and an etching mechanism 300 disposed on the adjustment mechanism 200. The adjustment mechanism 200 includes a mounting frame 201 disposed at the rear end of the etching tank 101. A screw 202 is rotatably mounted on the mounting frame 201. A moving block 204 is threadedly mounted on the screw 202. An inverted U-shaped support plate 205 is disposed at the upper end of the moving block 204. A hydraulic device 206 is disposed at the upper end of the moving block 204. The piston rod of the hydraulic device 206 extends to the support plate 205 and is mounted on a third mounting plate 207. The etching mechanism 300 includes a spray box 301 disposed at the front end of the third mounting plate 207. Fixed rods 302 are symmetrically disposed at the lower end of the spray box 301. An outer baffle 303 is connected to the end of the fixed rod 302. An inner baffle 306 is slidably mounted inside the outer baffle 303. This invention employs spray-type etching, which, combined with the rotation of the printing roller, ensures uniform etching. The outer baffle 303 and the inner baffle 306 slide together to form a ring-shaped shield, preventing the etching liquid from spreading and splashing, eliminating the need for cumbersome sealing and wrapping. The adjustable position adapts to different processing requirements, improving etching precision and efficiency while reducing the scrap rate.

[0022] Specifically, a first mounting plate 102 and a second mounting plate 103 are symmetrically arranged at the upper end of the corrosion tank 101. A cylinder 104 is arranged at the front end of the first mounting plate 102, and a rotating plate 105 is rotatably mounted at the end of the piston rod of the cylinder 104. A rotating shaft 106 is rotatably mounted at the rear end of the second mounting plate 103. A mounting sleeve 108 is provided at the end of the rotating shaft 106 and the front end of the rotating plate 105. A first motor 107 for driving the rotating shaft 106 is arranged at the front end of the second mounting plate 103. Figure 6 As shown, the printing roller is positioned between the mounting sleeves 108. The piston rod is extended by the operation of the cylinder 104, which can shorten the distance between the mounting sleeves 108. At this time, both ends of the printing roller can be inserted into the mounting sleeves 108. The mounting sleeves 108 can clamp and fix the printing roller. When the first motor 107 is working, the mounting sleeves 108 can be rotated, and the printing roller can be rotated under the action of the clamping force.

[0023] Furthermore, the mounting bracket 201 is C-shaped, and a second motor 203 is located at the end of the mounting bracket 201. The output shaft of the second motor 203 is connected to the shaft of the screw 202. The operation of the second motor 203 can rotate the screw 202, thereby adjusting the position of the etching mechanism 300 and facilitating etching processing on different positions of the printing roller.

[0024] It is worth noting that the spray box 301 is arranged in an arc shape along its long axis. Spray holes are evenly distributed at the lower end of the spray box 301. A delivery pump 208 is installed at the upper end of the third mounting plate 207. The delivery pump 208 is equipped with an inlet pipe and a delivery pipe. The end of the inlet pipe is located inside the etching solution tank 101, and the end of the delivery pipe is connected to the spray box 301. During the etching process, the delivery pump 208 operates, and in conjunction with the inlet pipe and delivery pipe, it delivers the etching solution from the etching solution tank 101 to the spray box 301. The solution is then sprayed out from the spray holes of the spray box 301. By spraying the etching solution onto the printing roller, the printing roller can be etched.

[0025] It is worth noting that the outer baffle 303 includes a semi-annular first blocking portion 3031. The front end of the first blocking portion 3031 is provided with an arc-shaped first mounting portion 3032. The lower end of the first mounting portion 3032 is provided with a limiting groove 304, and the inner wall of the limiting groove 304 is provided with ball bearings. The end of the first mounting portion 3032 is provided with a insertion interface 305 communicating with the limiting groove 304. The limiting groove 304 allows for the sliding installation of the inner baffle 306, and the ball bearings facilitate the sliding adjustment of the inner baffle 306.

[0026] It is worth noting that the inner baffle 306 includes a semi-circular second blocking part 3061. The front end of the second blocking part 3061 is provided with an arc-shaped second mounting part 3062. The outer surface of the second mounting part 3062 is provided with an arc-shaped limiting part 307. The limiting part 307 is slidably disposed in the limiting groove 304. Positioning plates 308 are symmetrically provided at both ends of the limiting part 307. The positioning plates 308 are made of elastic metal material. The positioning plates 308 include a first bending part and a second bending part. The first bending part is curved outward in an arc shape, and the second bending part is curved inward. During the etching process, the hydraulic device 206 operates, causing the spray box 301 and the outer baffle 303 to descend to the outside of the printing roller. Then, the inner baffle 306 is manually rotated, so that the inner baffle 306 and the outer baffle 303 form a ring that wraps around the printing roller. The positioning plate 308 at the end of the inner baffle 306 is inserted into the insertion interface 305 by compression to fix the inner baffle 306. When the etching liquid is sprayed, the inner rings of the inner baffle 306 and the outer baffle 303 are attached to the printing roller, which can prevent the etching liquid from flowing laterally on the printing roller. Secondly, the first shielding part 3031 and the second shielding part 3061 can prevent the sprayed etching liquid from splashing, further preventing corrosion to other parts of the printing roller. By changing the immersion etching method to spray etching, combined with the baffle structure, not only can the efficiency of the etching process be effectively improved, but the effect of the etching process can also be guaranteed.

[0027] Working Principle: This embodiment provides a copper chloride etching device for printing rollers. In use, the printing roller must first be installed and fixed. The roller is placed between two mounting sleeves 108. The cylinder 104 is activated, and its piston rod extends, pushing the rotating plate 105 closer to the second mounting plate 103, shortening the distance between the two mounting sleeves 108 until both ends of the printing roller are inserted into the two mounting sleeves 108. The mounting sleeves 108 securely clamp the printing roller. Then, according to the position of the printing roller to be etched, the position of the etching mechanism 300 is adjusted via the adjusting mechanism 200. The second motor 203 is activated, and its output shaft drives the screw 202 to rotate. Since the moving block 204 is threadedly connected to the screw 202, the rotation of the screw 202 will... The movable block 204 is moved along the length of the mounting frame 201, thereby driving the corrosion mechanism 300 mounted on the movable block 204 to move synchronously until the corrosion mechanism 300 is adjusted to the corresponding position of the printing roller to be corroded. Then, the height of the corrosion mechanism 300 can be adjusted by the hydraulic device 206. The piston rod of the hydraulic device 206 extends and retracts, driving the third mounting plate 207 to move up and down, thereby changing the height of the spray box 301 and the outer baffle 303 and inner baffle 306 relative to the printing roller, so that it is at a suitable corrosion working height. Next, the corrosion mechanism 300 is adjusted to ensure the accuracy of corrosion. The inner baffle 306 is manually slid, and the limiting part 307 of the inner baffle 306 is in the limiting groove of the outer baffle 303. The inner sliding groove 304 has ball bearings on its inner wall that reduce friction during sliding, making adjustment smoother. When the inner baffle 306 and outer baffle 303 together form a ring and wrap around the area of ​​the printing roller to be etched, the positioning plate 308 at the end of the inner baffle 306 passes through the insertion interface 305 by compression. The elastic deformation of the positioning plate 308 is used to fix the inner baffle 306. At this time, the inner rings of the inner baffle 306 and outer baffle 303 are attached to the printing roller, which can prevent the etchant from flowing laterally on the printing roller. At the same time, the first shielding part 3031 and the second shielding part 3061 can prevent the sprayed etchant from splashing and prevent corrosion of non-target parts of the printing roller. After everything is ready, the conveying pump 208 and the first electric motor are started. The machine 107 and the delivery pump 208 draw corrosion liquid from the corrosion liquid tank 101 through the inlet pipe and deliver it to the spray box 301 through the delivery pipe. The corrosion liquid is then sprayed onto the area to be corroded on the printing roller through the spray holes evenly distributed at the lower end of the spray box 301, thus achieving the corrosion process on the printing roller. At the same time, the first motor 107 drives the rotating shaft 106 to rotate. The rotating shaft 106 drives the printing roller to rotate through the mounting sleeve 108, so that the area to be corroded on the printing roller can be evenly contacted with the corrosion liquid, ensuring the consistency of the corrosion effect. During the corrosion process, if it is necessary to corrode other parts of the printing roller, the position of the corrosion mechanism 300 can be adjusted again through the adjustment mechanism 200. Repeating the above operation can complete the corrosion process on different parts of the printing roller.

[0028] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A copper chloride etching device for a printing plate, characterized by, The system includes a corrosion tank (101), an adjustment mechanism (200) located at the rear end of the corrosion tank (101), and a corrosion mechanism (300) mounted on the adjustment mechanism (200). The adjustment mechanism (200) includes a mounting bracket (201) located at the rear end of the corrosion tank (101). A screw (202) is rotatably mounted on the mounting bracket (201). A moving block (204) is threaded onto the screw (202). An inverted U-shaped support plate (205) is provided at the upper end of the moving block (204). A hydraulic device (206) is provided at the upper end of the block (204). The piston rod of the hydraulic device (206) extends to the support plate (205) and a third mounting plate (207) is installed thereon. The corrosion mechanism (300) includes a spray box (301) provided at the front end of the third mounting plate (207). A fixing rod (302) is symmetrically provided at the lower end of the spray box (301). An outer baffle (303) is connected to the end of the fixing rod (302). An inner baffle (306) is slidably installed inside the outer baffle (303).

2. A copper chloride etching device for a plate cylinder as defined in claim 1, characterized in that The upper end of the corrosion tank (101) is symmetrically provided with a first mounting plate (102) and a second mounting plate (103). A cylinder (104) is provided at the front end of the first mounting plate (102). A rotating plate (105) is rotatably mounted at the end of the piston rod of the cylinder (104). A rotating shaft (106) is rotatably mounted at the rear end of the second mounting plate (103). A mounting sleeve (108) is provided at the end of the rotating shaft (106) and the front end of the rotating plate (105). A first motor (107) for driving the rotating shaft (106) is provided at the front end of the second mounting plate (103).

3. A copper chloride etching device for a plate cylinder as defined in claim 2, characterized in that The mounting bracket (201) is C-shaped, and a second motor (203) is provided at the end of the mounting bracket (201). The output shaft of the second motor (203) is connected to the axis of the screw (202).

4. A copper chloride etching apparatus for a plate cylinder as defined in claim 3, wherein The spray box (301) is arranged in an arc shape along its long axis. Spray holes are evenly arranged at the lower end of the spray box (301). A delivery pump (208) is arranged at the upper end of the third mounting plate (207). The delivery pump (208) is equipped with an inlet pipe and a delivery pipe. The end of the inlet pipe is located in the corrosion tank (101). The end of the delivery pipe is connected to the spray box (301).

5. The copper chloride etching device for printing rollers according to claim 4, characterized in that, The outer baffle (303) includes a semi-circular first blocking part (3031), the front end of the first blocking part (3031) is provided with an arc-shaped first mounting part (3032), the lower end of the first mounting part (3032) is provided with a limiting groove (304), the inner wall of the limiting groove (304) is provided with a ball, and the end of the first mounting part (3032) is provided with a plug interface (305) communicating with the limiting groove (304).

6. A copper chloride etching apparatus for a plate cylinder as defined in claim 5, wherein The inner baffle (306) includes a semi-circular second blocking part (3061), and an arc-shaped second mounting part (3062) is provided at the front end of the second blocking part (3061). An arc-shaped limiting part (307) is provided on the outer surface of the second mounting part (3062). The limiting part (307) is slidably disposed in the limiting groove (304). Positioning plates (308) are symmetrically provided at both ends of the limiting part (307). The positioning plates (308) are made of elastic metal material. The positioning plates (308) include a first bending part and a second bending part. The first bending part is curved outward in an arc shape, and the second bending part is curved inward.

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