A flat-bed cylinder press

Abstract

The application relates to a detachable flatting roller intaglio printing machine, which comprises a main frame, a flattening mechanism, a plate cylinder mechanism and an ink groove mechanism. The flattening mechanism comprises a flattening roller body, bearings and multiple groups of quick-release mechanisms. The flattening roller body is respectively installed on the corresponding quick-release mechanisms through the bearings at both ends, and the flattening roller body is rotationally connected with the quick-release mechanisms. The quick-release mechanisms are installed on the main frame, and the quick-release mechanisms are detachably connected with the main frame. The plate cylinder mechanism is installed on the main frame on one side of the flattening mechanism, and the plate cylinder mechanism is rotationally connected with the main frame. The ink groove mechanism is installed on the main frame at the bottom of the plate cylinder mechanism, and the ink groove mechanism is slidingly connected with the main frame. The application has the technical effect that the flattening roller is convenient to disassemble and assemble, and the maintenance and replacement efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of printing equipment, and in particular to a gravure printing machine with a detachable flattening roller. Background Technology

[0002] In modern gravure printing production, the flattening roller, as a key component to ensure the flat transport of printing materials, has a significant impact on printing quality and production efficiency.

[0003] Currently, the flattening roller assembly of our existing gravure printing machine has a structural defect due to long-term operation. The original flattening roller shaft diameter and the diameter of the bearing rollers in the matching bearing model are too small, resulting in severe wear during high-frequency production operation. According to statistics, the original assembly has required multiple bearing replacements and frequent downtime for maintenance, leading to decreased production efficiency and increased annual maintenance costs, which has become a key pain point affecting the stability of the equipment.

[0004] Regarding the aforementioned technologies, the applicant believes that there is a defect in the key components being difficult to disassemble and assemble quickly. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a gravure printing machine with a detachable flattening roller.

[0006] This application provides a gravure printing machine with a detachable flattening roller, which adopts the following technical solution:

[0007] A gravure printing machine with a detachable flattening roller includes a main frame, a flattening mechanism, a printing plate cylinder mechanism, and an ink trough mechanism. The flattening mechanism includes a flattening roller body, bearings, and multiple quick-release mechanisms. The two ends of the flattening roller body are respectively mounted on corresponding quick-release mechanisms via bearings, and the flattening roller body is rotatably connected to the quick-release mechanisms. The quick-release mechanisms are mounted on the main frame and are detachably connected to the main frame. The printing plate cylinder mechanism is mounted on one side of the main frame of the flattening mechanism and is rotatably connected to the main frame. The ink trough mechanism is mounted on the main frame at the bottom of the printing plate cylinder mechanism and is slidably connected to the main frame.

[0008] By adopting the above technical solution, the printing plate cylinder mechanism is installed on the main frame, and the printing plate cylinder mechanism is detachably connected to the main frame. The ink trough mechanism is slidably connected to the main frame. The flattening roller is connected to the main frame through multiple quick-release mechanisms, and the quick-release mechanisms themselves are detachable from the main frame. This eliminates the complicated disassembly steps in traditional equipment. When the flattening roller wears or deforms due to long-term use, or when it is necessary to replace the flattening roller with a different specification according to the printing material, disassembly and assembly can be completed quickly, greatly shortening downtime for maintenance and improving equipment utilization.

[0009] Preferably, the diameter of the flattening roller is fifty millimeters, and the inner diameter of the bearing is adapted to the diameter of the flattening roller.

[0010] By adopting the above technical solutions, the cross-sectional area of ​​the flattening roller is greatly increased after the diameter of the flattening roller is thickened, and its resistance to bending and deformation is significantly improved. This solves the problem of frequent bearing damage, improves the running stability of the flattening roller, and enhances the reliability of the 6305 bearing. The combination of the two can reduce the frequency of equipment downtime caused by roller or bearing failure and improve production continuity.

[0011] Preferably, the quick-release mechanism includes an upper cover, a flattening roller seat, and a quick-opening and closing mechanism. The flattening roller seat is mounted on the main frame and is detachably connected to the main frame. One end of each of the two quick-opening and closing mechanisms is mounted on the main frame on both sides of the flattening roller seat, and the other end of the quick-opening and closing mechanism is mounted on the upper cover. The upper cover is detachably connected to the quick-opening and closing mechanism.

[0012] By adopting the above technical solution, the flattening roller seat is installed on the main frame. The quick opening and closing mechanism can realize the quick separation and closing of the top cover and the flattening roller seat through one-click fastening and unlocking. The bearing can be checked or replaced. The flattening roller seat and the main frame are detachably connected. During installation, the positional accuracy of the flattening roller seat on the frame can be ensured, avoiding bearing coaxiality errors caused by manual alignment deviation.

[0013] Preferably, the quick-opening and closing mechanism includes a guide assembly, a first hydraulic rod, and a locking device. The working end of the first hydraulic rod is connected to one side of the guide assembly, the upper cover is connected to the other side of the guide assembly, and the locking device is installed on the guide assembly. The locking device is located on the guide assembly so that the locking device and the guide assembly are locked together and cannot move relative to each other.

[0014] By adopting the above technical solution, the first hydraulic rod provides driving force through the hydraulic system, and the cover moves at a constant speed during the opening and closing process. The stroke of the hydraulic rod can be precisely adjusted by the throttle valve in the oil circuit. Under the drive of the hydraulic rod, the cover moves axially along the guide assembly, reducing the radial offset and ensuring that the coaxiality error between the cover and the mounting hole of the flattening roller seat is less than the allowable value, thus avoiding abnormal bearing stress due to eccentricity.

[0015] Preferably, the printing plate cylinder mechanism includes a cylinder body, a cylinder base, a geared motor, and a doctor blade device. Two sets of cylinder bases are respectively installed at both ends of the cylinder body, and the cylinder body is rotatably connected to the cylinder bases. The cylinder bases are detachably connected to the main frame at both ends of the cylinder body. The geared motor is installed on the main frame on one side of the cylinder body, and the base of the geared motor is detachably connected to the main frame. The working end of the geared motor is connected to the cylinder body, and the geared motor provides rotation for the cylinder body. The doctor blade device is installed on the main frame above the cylinder body, and the doctor blade device is movably connected to the main frame. The doctor blade device is used to scrape off excess ink from the cylinder surface.

[0016] By adopting the above technical solution, the roller base, the geared motor base and the main frame are all detachably connected. The geared motor is directly connected to the roller body, and the roller speed can be precisely adjusted according to printing needs. The doctor blade device is installed above the roller body and is movably connected to the main frame, flexibly adjusting the contact pressure between the doctor blade device and the printing plate roller surface to ensure that the doctor blade device can closely contact the roller surface, completely scrape off the ink in the blank area, and make the ink in the image area full and clear.

[0017] Preferably, the ink reservoir mechanism includes an ink reservoir, a second hydraulic rod, an electric linear guide rail, and a slider. Two sets of electric linear guide rails are installed on both sides of the main frame below the printing plate cylinder mechanism, and the electric linear guide rails are detachably connected to the main frame. Two sets of sliders are respectively installed on the corresponding electric linear guide rails, and the sliders are slidably connected to the linear guide rails. Two sets of second hydraulic rods are respectively installed on the corresponding sliders, and the base of the second hydraulic rod is detachably connected to the slider. The working ends of the two sets of second hydraulic rods are respectively connected to both ends of the ink reservoir.

[0018] By adopting the above technical solution, two sets of electric linear guides are installed on both sides below the printing plate cylinder. The slider can move laterally on the guide rails, driving the ink dispensing tank to be precisely positioned. The second hydraulic rod provides driving force through the hydraulic system to control the vertical lifting speed of the ink dispensing tank to be stable and the positioning accuracy is high. The hydraulic rod drives the ink tank to rise to the surface of the printing plate cylinder mechanism to immerse it in ink. The ink tank descends to a low position to facilitate cleaning or ink replacement, and to prevent ink from dripping onto the equipment.

[0019] Preferably, a drying mechanism is provided on the main frame on the other side of the flattening mechanism. The drying mechanism includes a hot air blower and an infrared lamp. The infrared lamp is installed on the main frame above the flattening mechanism and is detachably connected to the main frame. The hot air blower is installed on the main frame on one side of the infrared lamp and is detachably connected to the main frame.

[0020] By adopting the above technical solution, the electromagnetic waves emitted by the infrared lamp tube can be directly absorbed by the organic matter in the ink and converted into heat energy to achieve deep drying from the inside out. The infrared lamp tube is detachably connected to the main frame, and the number of installations can be adjusted according to the printing area. The hot air generated by the hot air blows onto the surface of the printed matter, and the solvents volatilized from the ink surface are carried away by forced convection, avoiding the accumulation of solvents inside the equipment and the formation of safety hazards.

[0021] Preferably, an unwinding roller and a first roller seat are provided on the main frame on one side of the printing plate cylinder mechanism. The unwinding roller is mounted on the main frame via the first roller seat and is rotatably connected to the main frame. A take-up roller, a second roller seat, and a motor are provided on the main frame on one side of the flattening mechanism. The take-up roller is mounted on the main frame via the second roller seat and is rotatably connected to the main frame. The motor is mounted on the main frame at one end of the take-up roller. The motor base is detachably connected to the main frame. The working end of the motor is connected to the take-up roller, and the motor provides rotation for the take-up roller.

[0022] By adopting the above technical solution, the unwinding roller rotates freely through the first roller seat, and with the active traction of the take-up roller motor, a stable material transport path is formed. The take-up roller motor can adjust the take-up tension in real time according to the printing speed to avoid the material from becoming loose or wrinkled due to insufficient tension, or from tearing due to excessive tension.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. After the diameter of the flattening roller is increased, the cross-sectional area of ​​the flattening roller is greatly increased, and its resistance to bending and deformation is significantly improved. This solves the problem of frequent bearing damage, improves the running stability of the flattening roller, and enhances the reliability of the 6305 bearing. The combination of these two factors can reduce the frequency of equipment downtime caused by roller or bearing failure and improve production continuity.

[0025] 2. The flattening roller seat is installed on the main frame. The quick opening and closing mechanism can realize the quick separation and closing of the top cover and the flattening roller seat through one-click fastening and unlocking. The bearing can be checked or replaced. The flattening roller seat and the main frame are detachably connected. During installation, the positional accuracy of the flattening roller seat on the frame can be ensured, avoiding bearing coaxiality errors caused by manual alignment deviation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0027] Figure 2 This is a schematic diagram of the flattening mechanism in the embodiment.

[0028] Explanation of reference numerals in the attached drawings: 1. Main frame; 2. Flattening mechanism; 21. Flattening roller body; 22. Bearing; 23. Quick release mechanism; 231. Top cover; 232. Flattening roller seat; 233. Quick opening and closing mechanism; 2331. Guide assembly; 2332. First hydraulic rod; 2333. Locking device; 3. Printing plate cylinder mechanism; 31. Cylinder body; 32. Roller seat; 33. Gear motor; 34. Doctor blade device; 4. Ink trough mechanism; 41. Ink discharge trough; 42. Second hydraulic rod; 43. Electric linear guide rail; 44. Slider; 5. Drying mechanism; 51. Hot air blower; 52. Infrared lamp tube; 6. Unwinding roller; 61. First roller seat; 7. Rewinding roller; 71. Second roller seat; 72. Electric motor. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a gravure printing machine with a detachable flattening roller; see reference. Figure 1 and Figure 2 The system includes a main frame 1, a flattening mechanism 2, a printing plate cylinder mechanism 3, and an ink trough mechanism 4. The flattening mechanism 2 includes a flattening roller body 21, bearings 22, and multiple quick-release mechanisms 23. Two quick-release mechanisms 23 are respectively installed at both ends of the flattening roller body 21 via bearings 22. The flattening roller body 21 is rotatably connected to the quick-release mechanism 23. The quick-release mechanism 23 includes an upper cover 231, a flattening roller seat 232, and a quick-opening and closing mechanism 233. The flattening roller seat 232 is bolted to the main frame 1. One end of each of the two quick-opening and closing mechanisms 233 is connected to both sides of the upper cover 231, and the other end of the quick-opening and closing mechanism 233 is connected to the main frame 1, causing the upper cover 231 to move longitudinally. The quick-opening and closing mechanism 233 includes a guide assembly 2331, a first hydraulic rod 2332, and a locking device 2333. The guide assembly 2331 is installed on the main frame 1. On the machine frame 1, the base of the first hydraulic rod 2332 is bolted to the main frame 1 on one side of the guide assembly 2331. The working end of the first hydraulic rod 2332 is connected to the moving part of the guide assembly 2331, and the moving part at the other end of the guide assembly 2331 is connected to the upper cover 231. When the first hydraulic rod 2332 is working, it drives the guide assembly 2331 and the upper cover 231 to move, so that the quick-release mechanism 23 meets the requirements for quick replacement of the bearing 22. The diameter of the flattening roller body 21 is increased from 20 mm to 50 mm, and the bearing 22 model is changed from 6205 to 6305. The inner diameter of the bearing 22 is matched with the diameter of the thickened flattening roller body 21. The cross-sectional area of ​​the flattening roller body 21 is greatly increased, which improves the running stability of the flattening roller. The reliability of the 6305 bearing 22 is improved, which solves the problem of frequent bearing 22 damage.

[0031] The printing plate cylinder mechanism 3 includes a cylinder body 31, a cylinder base 32, a geared motor 33, and a doctor blade device 34. The cylinder body 31 is mounted on the main frame 1 on one side of the flattening mechanism 2 via the cylinder base 32, and the cylinder body 31 is rotatably connected to the main frame 1. The geared motor 33 is mounted on the main frame 1 on one side of the cylinder body 31, and the base of the geared motor 33 is bolted to the main frame 1. The working end of the geared motor 33 is connected to the cylinder body 31, and the geared motor 33 provides power to the cylinder body 31. The doctor blade device 34 is mounted on the main frame 1 at the top of the cylinder body 31, and the doctor blade device 34 is connected to the main frame 1 via an adjustable hinge. By adjusting the position of the doctor blade device 34, the doctor blade device 34 is made to fit against the cylinder surface to scrape off excess ink. The ink trough mechanism 4 includes an ink trough 41, a second hydraulic rod 42, and an electric... Linear guide rail 43 and slider 44, ink trough 41 are placed below cylinder 31. Ink trough 41 is connected to main frame 1 via two sets of second hydraulic rods 42, two sets of electric linear guide rails 43 and slider 44. Electric linear guide rails 43 are bolted to main frame 1. Slider 44 is mounted on electric linear guide rails 43 and is slidably connected to electric linear guide rails 43. The base of second hydraulic rod 42 is bolted to slider 44. The working end of second hydraulic rod 42 is connected to ink trough 41. The sliding between slider 44 and electric linear guide rail 43 causes ink trough 41 to move laterally. The movement of second hydraulic rod 42 causes ink trough 41 to move longitudinally. The slider 44, electric linear guide rail 43 and second hydraulic rod 42 work together to make ink trough 41 accurately positioned and evenly ink-coated on cylinder 31.

[0032] A drying mechanism 5 is installed on the main frame on the other side of the flattening mechanism 2. The drying mechanism 5 includes a hot air blower 51 and an infrared lamp 52. The infrared lamp 52 is bolted to the main frame 1 above the flattening mechanism 2. The hot air blower 51 is installed on one side of the main frame 1 at the location of the infrared lamp 52. The hot air blower 51 is bolted to the main frame 1. The electromagnetic waves emitted by the infrared lamp 52 provide deep drying, and the hot air generated by the hot air blown onto the surface. An unwinding roller 6 and a first roller seat 61 are installed on the main frame 1 on one side of the printing plate cylinder mechanism 3. Two sets of first roller seats 61 are installed at both ends of the unwinding roller 6. The unwinding roller 6 is installed on the main frame 1 through the first roller seats 61. The unwinding roller 6 is rotatably connected to the main frame 1. On one side of the main frame 1 of the flat mechanism 2, there is a take-up roller 7, a second roller seat 71 and a motor 72. Two sets of second roller seats 71 are respectively installed at both ends of the take-up roller 7. The take-up roller 7 is rotatably connected to the second roller seat 71. The second roller seat 71 is bolted to the main frame 1. A motor 72 is installed on the main frame 1 at one end of the take-up roller 7. The base of the motor 72 is bolted to the main frame 1. The working end of the motor 72 is connected to the take-up roller 7. The motor 72 provides rotation for the take-up roller 7. The unwind roller 6 rotates through the first roller seat 61. With the active traction of the motor 72 of the take-up roller 7, a stable material transmission path is formed. The motor 72 of the take-up roller 7 can adjust the winding tension in real time according to the printing speed.

[0033] The working principle of a gravure printing machine with a detachable flattening roller in this application is as follows:

[0034] The unwinding roller 6 is fixed to the main frame 1 via the first roller seat 61 and passively releases the printing material. The winding roller 7 is driven by the motor 72 and is mounted on the main frame 1 via the second roller seat 71. It winds up the printed material with constant tension to ensure uniform tension during material transport. The flattening roller body 21 is thickened from 20 mm to 50 mm, and the bearing 22 is replaced with a 6305 bearing that matches the flattening roller body 21. The flattening roller body 21 and the bearing 22 are mounted on the frame via a quick-release mechanism 23. The thickening of the flattening roller body 21 and the replacement of the bearing 22 improve the operational stability of the flattening roller body 21. The upper cover 231 of the quick-release mechanism 23 is connected to the guide assembly 2331 via the first hydraulic rod 2332 in the quick-opening mechanism 233 and the guide assembly 2331 is connected to the upper cover 231. By controlling the longitudinal movement of the first hydraulic rod 2332 and the locking device 2333 on the guide assembly 2331, the system can achieve the desired effect. The system enables quick assembly and disassembly, facilitating maintenance or replacement of the flattening roller 21 and bearing 22. A hydraulic rod drives the top cover 231 to open and close, a guide assembly 2331 ensures precise movement, and a locking device 2333 fixes the position, improving flattening efficiency. A reduction motor 33 drives the cylinder 31 to rotate, and ink is absorbed into the gravure image area on the surface of the cylinder 31. A doctor blade device 34 is installed above the cylinder 31, adhering to the surface of the cylinder 31 via a movable link to scrape away excess ink, leaving only the ink within the gravure. An electric linear guide rail 43 drives the slider 44 to move laterally, adjusting the relative position of the ink trough 41 and the printing plate cylinder mechanism 3. A second hydraulic rod 42 drives the ink trough 41 to rise and fall, controlling the ink level to ensure even ink coverage of the cylinder 31. A hot air blower 51 and an infrared lamp 52 are installed above the flattening mechanism 2. The hot air blower 51 provides hot air convection, and the infrared lamp 52 emits radiant heat; this dual heating allows the ink on the printing material to cure quickly.

[0035] 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 gravure printing machine with a detachable flattening roller, characterized in that: The system includes a main frame (1), a flattening mechanism (2), a printing plate cylinder mechanism (3), and an ink trough mechanism (4). The flattening mechanism (2) includes a flattening roller (21), a bearing (22), and multiple quick-release mechanisms (23). The flattening roller (21) is mounted on the corresponding quick-release mechanism (23) at both ends via the bearing (22). The flattening roller (21) is rotatably connected to the quick-release mechanism (23). The quick-release mechanism (23) is mounted on the main frame (1). The printing plate cylinder mechanism (3) is mounted on the main frame (1) on one side of the flattening mechanism (2). The printing plate cylinder mechanism (3) is rotatably connected to the main frame (1). The ink trough mechanism (4) is mounted on the main frame (1) at the bottom of the printing plate cylinder mechanism (3). The ink trough mechanism (4) is slidably connected to the main frame (1).

2. The gravure printing machine with a detachable flattening roller according to claim 1, characterized in that: The diameter of the flattening roller (21) is fifty millimeters, and the inner diameter of the bearing (22) is adapted to the diameter of the flattening roller (21).

3. A gravure printing machine with a detachable flattening roller according to claim 1, characterized in that: The quick-release mechanism (23) includes an upper cover (231), a flattening roller seat (232), and two sets of quick-opening and closing mechanisms (233). The flattening roller seat (232) is mounted on the main frame (1) and is detachably connected to the main frame (1). One end of each of the two sets of quick-opening and closing mechanisms (233) is mounted on the main frame (1) on both sides of the flattening roller seat (232), and the other end of the quick-opening and closing mechanism (233) is mounted on the upper cover (231). The upper cover (231) is detachably connected to the quick-opening and closing mechanism (233).

4. A gravure printing machine with a detachable flattening roller according to claim 3, characterized in that: The quick-opening and closing mechanism (233) includes a guide assembly (2331), a first hydraulic rod (2332), and a locking device (2333). The working end of the first hydraulic rod (2332) is connected to one side of the guide assembly (2331), and the upper cover (231) is connected to the other side of the guide assembly (2331). The locking device (2333) is installed on the guide assembly (2331) and is located on the guide assembly (2331) so that the locking device (2333) and the guide assembly (2331) are locked together and cannot move relative to each other.

5. A gravure printing machine with a detachable flattening roller according to claim 1, characterized in that: The printing plate cylinder mechanism (3) includes a cylinder (31), a cylinder seat (32), a geared motor (33), and a doctor blade device (34). Two sets of cylinder seats (32) are respectively installed at both ends of the cylinder (31). The cylinder (31) and the cylinder seat (32) are rotatably connected. The cylinder seat (32) is detachably connected to the main frame (1) at both ends of the cylinder (31). The geared motor (33) is installed on the main frame (1) on one side of the cylinder (31). The base of the geared motor (33) is detachably connected to the main frame (1). The working end of the geared motor (33) is connected to the cylinder (31). The geared motor (33) provides rotation for the cylinder (31). The doctor blade device (34) is installed on the main frame (1) above the cylinder (31). The doctor blade device (34) is movably connected to the main frame (1). The doctor blade device (34) is used to scrape off excess ink from the surface of the cylinder (31).

6. A gravure printing machine with a detachable flattening roller according to claim 1, characterized in that: The ink reservoir mechanism (4) includes an ink reservoir (41), two sets of second hydraulic rods (42), two sets of electric linear guides (43), and sliders (44). The two sets of electric linear guides (43) are installed on both sides of the main frame (1) below the printing plate cylinder mechanism (3). The electric linear guides (43) are detachably connected to the main frame (1). The two sets of sliders (44) are respectively installed on the corresponding electric linear guides (43). The sliders (44) are slidably connected to the linear guides. The two sets of second hydraulic rods (42) are respectively installed on the corresponding sliders (44). The base of the second hydraulic rod (42) is detachably connected to the slider (44). The working ends of the two sets of second hydraulic rods (42) are respectively connected to the two ends of the ink reservoir (41).

7. A gravure printing machine with a detachable flattening roller according to claim 1, characterized in that: A drying mechanism (5) is provided on the main frame (1) on the other side of the flattening mechanism (2). The drying mechanism (5) includes a hot air blower (51) and an infrared lamp (52). The infrared lamp (52) is installed on the main frame (1) above the flattening mechanism (2). The infrared lamp (52) is detachably connected to the main frame (1). The hot air blower (51) is installed on the main frame (1) on the side of the infrared lamp (52). The hot air blower (51) is detachably connected to the main frame (1).

8. A gravure printing machine with a detachable flattening roller according to claim 1, characterized in that: On one side of the printing plate cylinder mechanism (3), a main frame (1) is provided with an unwinding roller (6) and a first roller seat (61). The unwinding roller (6) is mounted on the main frame (1) through the first roller seat (61) and is rotatably connected to the main frame (1). On one side of the flattening mechanism (2), a main frame (1) is provided with a take-up roller (7), a second roller seat (71) and a motor (72). The take-up roller (7) is mounted on the main frame (1) through the second roller seat (71) and is rotatably connected to the main frame (1). The motor (72) is mounted on the main frame (1) at one end of the take-up roller (7). The base of the motor (72) is detachably connected to the main frame (1). The working end of the motor (72) is connected to the take-up roller (7) and the motor (72) provides rotation for the take-up roller (7).

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