High-speed printing unit

Abstract

The utility model discloses a high-speed printing unit which is characterized in that the high-speed printing unit comprises a frame plate, a feeding guide roller is arranged on the frame plate, a pressing roller is arranged close to the feeding guide roller, a base material is pressed on a large water-cooling roller through the pressing roller, and a plate roller and a UV module are sequentially arranged on the large water-cooling roller in a matched mode in the winding direction of the base material on the large water-cooling roller. An anilox roller is arranged corresponding to the printing roller, an ink transfer roller is arranged corresponding to the anilox roller, the ink transfer roller is partially located in the ink box, the large water-cooling roller and the printing roller can be matched to print a base material, and a discharging guide roller is arranged close to the discharging end of the large water-cooling roller. The water-cooling roller is simple in structure and reasonable in design, a traditional pressing roller and a water-cooling roller are integrated into one roller body, traction paths of base materials can be effectively reduced, then the traction conveying efficiency and stability of the base materials are improved, meanwhile, cooling paths of the base materials can be increased, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model relates to printing equipment, in particular to a high-speed printing unit. Background Art

[0002] A printing press is a special device for printing ink on a substrate to obtain a desired pattern. One type of printing press uses UV ink for printing. After printing with UV ink, it is necessary to irradiate the substrate through a UV module to dry and cure the ink, enhancing its gloss and three-dimensional sense. A large amount of heat is generated during UV irradiation. Therefore, in a traditional printing press, a separate water-cooled roller is additionally configured in the printing unit to cooperate with the UV module to cool the substrate. The defect of this structure in actual use is that after the substrate is sent out from the printing unit, it still needs to bypass the water-cooled roller and some corresponding guide rollers, resulting in a longer traction path of the substrate and a poorer conveying efficiency. In addition, the size of the water-cooled roller is limited by the internal structure of the printing unit and cannot be designed too large, resulting in a very limited cooling effect on the substrate. Content of the Utility Model

[0003] In view of the deficiencies of the background art, the technical problem to be solved by the present utility model is to provide a high-speed printing unit for solving the above problems.

[0004] To this end, the present utility model is implemented as follows:

[0005] A high-speed printing unit, characterized in that it includes a frame plate, on which a feeding guide roller is provided, a pressing roller is provided near the feeding guide roller, the pressing roller presses the substrate against a large water-cooled roller, a plate roller and a UV module are sequentially arranged along the winding direction of the substrate on the large water-cooled roller, a gravure roller is provided corresponding to the plate roller, an ink transfer roller is provided corresponding to the gravure roller, a part of the ink transfer roller is located in an ink cartridge, the large water-cooled roller and the plate roller can cooperate to print the substrate, and a discharging guide roller is provided near the discharging end of the large water-cooled roller.

[0006] The distance between the feeding guide roller and the discharging guide roller is less than the diameter of the large water-cooled roller.

[0007] A guide plate is provided at the top position of the frame plate near the large water-cooled roller. The guide plate includes a flat plate portion and an arc plate portion. The shape of the arc plate portion corresponds to the outer contour of the large water-cooled roller. The plate roller can be placed on the guide plate and pushed into or out of the printing unit.

[0008] One end of the large water-cooled roller is provided with a transmission shaft, which is connected to the output end of the driving motor through a coupling. The other end of the large water-cooled roller is connected with a rotary joint, and the rotary joint is provided with a water inlet hole and a water outlet hole. The water inlet hole is communicated with the water inlet flow channel in the large water-cooled roller, the water outlet hole is communicated with the water outlet flow channel in the large water-cooled roller, and the water inlet flow channel and the water outlet flow channel are communicated with each other.

[0009] The diameter of the large water-cooled roller is not less than 60 cm.

[0010] A high-speed printing unit of the above technical solution integrates the pressure roller and the water-cooled roller in the traditional printing unit into a single large water-cooled roller, and arranges the UV module corresponding to the large water-cooled roller, so that the substrate can complete the whole printing and UV irradiation after passing around the large water-cooled roller, without passing through an additional water-cooled roller and the corresponding winding roller, which can effectively reduce the traction stroke of the substrate, thereby improving the traction conveying efficiency. At the same time, the contact cooling time between the large water-cooled roller and the substrate is longer, which can improve the cooling effect of the substrate to a greater extent. Description of the Drawings

[0011] The present utility model has the following drawings:

[0012] Figure 1 is a schematic structural view of the present utility model;

[0013] Figure 2 is Figure 1 a partial enlarged view at the position pointed by A in

[0014] Figure 3 is a sectional view of the large water-cooled roller of the present utility model. Detailed Embodiments

[0015] As shown in the figure, a high-speed printing unit disclosed by the present utility model includes a frame plate 21. A feeding guide roller 2 is arranged on the frame plate 21. A pressure roller 3 is arranged near the feeding guide roller 2. The pressure roller 3 presses the base material 1 against a large water-cooling roller 8. Specifically, the diameter of the large water-cooling roller 8 is not less than 60 cm. Along the winding direction of the base material on the large water-cooling roller 8, a plate roller 7 and a UV module 10 are sequentially arranged in cooperation. A gravure roller 6 is arranged corresponding to the plate roller 7. An ink transfer roller 5 is arranged corresponding to the gravure roller 6. The ink transfer roller 5 is partially located in an ink cartridge 4. The large water-cooling roller 8 and the plate roller 7 can cooperate to print the base material. A discharging guide roller 11 is arranged near the discharging end of the large water-cooling roller 8. Further, the distance between the feeding guide roller 2 and the discharging guide roller 11 is less than the diameter of the large water-cooling roller 8, so that the base material 1 can wind around the outer side of the large water-cooling roller 8 as much as possible, increasing the cooling contact area and improving the cooling effect. A guide plate 9 is arranged at the top position of the frame plate 21 near the large water-cooling roller 8. The guide plate 9 includes a flat plate portion 12 and an arc plate portion 13. The shape of the arc plate portion 13 corresponds to the outer contour of the large water-cooling roller 8. The plate roller 7 can be placed on the guide plate 9 and pushed into or out of the printing unit. After the large water-cooling roller 8 is adopted, when the specification of the plate roller changes, in most cases, it is not necessary to replace the large water-cooling roller. At this time, the guide plate 9 can be used to facilitate the replacement and installation of the plate roller. One end of the large water-cooling roller 8 has a transmission shaft 18. The transmission shaft 18 is connected to the output end of a driving motor 20 through a coupling 19. By controlling the driving motor 20, the large water-cooling roller 8 can be driven to rotate. The other end of the large water-cooling roller 8 is connected to a rotary joint 14. An inlet hole 15 and an outlet hole 16 are arranged on the rotary joint 14. The inlet hole 15 is communicated with an inlet water flow channel 17 in the large water-cooling roller 8. The outlet hole 16 is communicated with an outlet water flow channel in the large water-cooling roller 8. The inlet water flow channel 17 and the outlet water flow channel are communicated with each other.

[0016] The working principle of the present utility model is as follows: The base material 1 first passes through the feeding guide roller 2, then winds around the large water-cooling roller 8. At this time, the pressure roller 3 presses the base material 1 against the large water-cooling roller 8. As the base material 1 continues to be pulled and passes through the plate roller 7, the plate roller 7 and the large water-cooling roller cooperate to print the base material. Then the base material continues to be pulled to the UV module 10, where the printed ink is dried and cured. At this time, the large water-cooling roller 8 has cooled the base material, eliminating the heat generated during UV irradiation. Then the base material continues to be pulled away from the large water-cooling roller 8 and winds around the discharging guide roller 11 and is sent out.

[0017] With this structure of the present utility model, by integrating the pressure roller and the water-cooled roller in the traditional printing unit into a single large water-cooled roller and arranging the UV module corresponding to the large water-cooled roller, the substrate can complete the entire printing and UV irradiation after passing around the large water-cooled roller, without the need to pass through an additional water-cooled roller and the corresponding winding roller, which can effectively reduce the traction stroke of the substrate, thereby improving the traction and conveying efficiency. At the same time, the contact cooling time between the large water-cooled roller and the substrate is longer, which can improve the cooling effect of the substrate to a greater extent.

Claims

1. A high-speed printing unit, characterized in that The invention comprises a frame plate (21), on which a feed guide roller (2) is arranged, and a pressing roller (3) is arranged near the feed guide roller (2), the pressing roller (3) presses the substrate (1) onto a large water-cooled roller (8), and a plate roller (7) and a UV module (10) are arranged in sequence along the warp and winding direction of the substrate on the large water-cooled roller (8), a reticulated roller (6) is arranged corresponding to the plate roller (7), and an ink transfer roller (5) is arranged corresponding to the reticulated roller (6), and a part of the ink transfer roller (5) is located in an ink cartridge (4), the large water-cooled roller (8) and the plate roller (7) can cooperate to print the substrate, and a discharge guide roller (11) is arranged near the discharge end of the large water-cooled roller (8).

2. A high-speed printing unit according to claim 1, characterized in that The distance between the feed guide roller (2) and the discharge guide roller (11) is smaller than the diameter of the large water-cooled roller (8).

3. A high-speed printing unit according to claim 1, characterized in that The frame plate (21) is provided with a guide plate (9) at a top position close to the large water-cooled roller (8), the guide plate (9) comprising a flat plate portion (12) and an arc-shaped plate portion (13), the shape of the arc-shaped plate portion (13) corresponding to the outer contour of the large water-cooled roller (8), and the plate roller (7) can be placed on the guide plate (9) and pushed into the printing unit or pushed out from the printing unit.

4. A high-speed printing unit according to claim 1, characterized in that One end of the large water-cooled roller (8) has a transmission shaft (18), and the transmission shaft (18) is connected to the output end of the driving motor (20) through a coupling (19). The other end of the large water-cooled roller (8) is connected to a rotary joint (14), and the rotary joint (14) is provided with a water inlet hole (15) and a water outlet hole (16). The water inlet hole (15) is connected to a water inlet channel (17) in the large water-cooled roller (8), and the water outlet hole (16) is connected to a water outlet channel in the large water-cooled roller (8). The water inlet channel (17) and the water outlet channel are connected to each other.

5. A high-speed printing unit according to claim 1, characterized in that The diameter of the large water-cooled roller (8) is not less than 60 cm.

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