Film guiding device of color press

Abstract

The utility model provides a film guiding device of a color press, and belongs to the technical field of color presses. Comprising a first support and a second support, a pair of guide rollers are rotationally connected between the first support and the second support, a limiting assembly is arranged on one sides of the guide rollers and comprises supporting plates fixedly arranged on the upper walls of the sides of the first support and the second support, a screw is rotationally connected between the supporting plates, sliding blocks are symmetrically connected to the screw in a threaded mode, and C-shaped frames are arranged at the bottoms of the sliding blocks; a limiting pulley arranged on one side of the central axis of the pair of guide rollers is rotationally connected between the upper inner wall and the lower inner wall of the C-shaped frame. A film penetrates through the gap between the pair of guide rollers, the longitudinal moving direction of the film can be limited, the distance between the limiting pulleys can be adjusted through the limiting assemblies according to the width of the film, and then the color film is transversely limited between the limiting pulleys; therefore, the film can continuously move along the guide of the fixed line, and the film is effectively prevented from deflecting to a certain side to influence the final color printing effect.

Description

Technical Field

[0001] The utility model provides a film guiding device for a color printing machine, belonging to the technical field of color printing machines. Background Art

[0002] A color printing machine is also called a gravure printing machine. When a gravure printing machine is printing, the entire surface of the plate cylinder is inked, and the ink on the blank part of the plate is scraped off with a scraper, leaving the ink on the graphic part. Then the ink passes through the film, and the impression roller is pressed on the back of the film, so that the ink in the concave part is directly transferred to the film surface. Finally, the printed matter is stacked or rewound through the film collection part.

[0003] The film of the color printing machine will go through multiple turns during the movement, and considering the film size of the color printing machine, in actual use, the color printing machine will print films of different widths, so the length of the guide roller will be relatively long, causing the film to inevitably deflect to one side on the guide roller during the movement, affecting the final color printing effect. Based on this, the utility model provides a film guide device for a color printing machine. Utility Model Content

[0004] The technical problem solved by the utility model is that films of different sizes will inevitably deflect to one side on the guide roller during the movement, thus affecting the final color printing effect.

[0005] In order to solve the technical problem, the technical solution provided by the utility model is: a film guiding device of a color printing machine, comprising a bracket one and a bracket two, a pair of guide rollers are rotatably connected between the bracket one and the bracket two, a limiting component for limiting films of different widths is provided on one side of the guide roller, the limiting component comprises a support plate fixedly arranged on the upper wall of the bracket one and the bracket two, a screw is rotatably connected between the support plates, a slider is symmetrically threaded on the screw, a C-frame is provided at the bottom of the slider, a limiting pulley placed on one side of the central axis of the pair of guide rollers is rotatably connected between the upper inner wall and the lower inner wall of the C-frame.

[0006] Furthermore, one end of the screw is rotatably connected to the side wall of the support plate on one side, and the side wall of the support plate on the other side is provided with a motor, and the output end of the motor is fixedly connected to the other end of the screw.

[0007] Furthermore, limiting rods are symmetrically arranged between the support plates, passing through the slider and disposed outside the screw rod.

[0008] Furthermore, the screw rod is symmetrically provided with threads which rotate in opposite directions and match the sliding block.

[0009] Furthermore, the limiting pulley includes a wheel body and baffles fixedly arranged on both sides of the wheel body, and the outer side wall of the baffle is provided with a rotating shaft rotatably connected to the upper inner wall and the lower inner wall of the C-frame.

[0010] Beneficial effects of the utility model:

[0011] By passing the film through the gap between a pair of guide rollers, the longitudinal movement direction of the film can be limited. The distance between the limiting pulleys can be adjusted according to the width of the film through the limiting assembly, and then the film of the color printing machine can be limited to one side of the wheel body between the baffles. The baffles can prevent the film of the color printing machine from detaching from the limiting pulley when it deviates up and down, so as to limit the film in the horizontal direction, so that the film can continuously move along the predetermined line guide, effectively preventing the film from deflecting to one side and affecting the final color printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the structure of the film guide device of the color printing machine.

[0013] Figure 2 It is a plan view of a film guide device of a color printing machine of the utility model.

[0014] Figure 3 It is a partial plan view of a film guide device of a color printing machine of the utility model.

[0015] 1. Bracket 1; 2. Bracket 2; 3. Guide roller; 4. Limit assembly; 5. Support plate; 6. Screw; 7. Slider; 8. C-frame; 9. Limit pulley; 10. Motor; 11. Limit rod; 12. Thread; 13. Wheel body; 14. Stop plate; 15. Rotating shaft. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] According to the attached Figure 1 As shown: The utility model provides a film guiding device for a color printing machine: it includes a bracket 1 and a bracket 2, a pair of guide rollers 3 are rotatably connected between the bracket 1 and the bracket 2, and mounting holes are provided at the bottom of the bracket 1 and the bracket 2, so that the film guiding device can be installed at a suitable position on the color printing machine by bolts, and the film of the color printing machine is made to fit with the bottom of the upper guide roller 3 and the top of the lower guide roller 3 by passing the film of the color printing machine through the gap between the pair of guide rollers 3, so that the longitudinal movement direction of the film is limited.

[0018] According to the attached Figure 1 , 23: A limiting assembly 4 for limiting films of different widths is provided on one side of the guide roller 3. The limiting assembly 4 includes a support plate 5 fixedly arranged on the upper wall of the bracket 1 and the bracket 2. A screw 6 is rotatably connected between the support plates 5. A slider 7 is threadedly connected to the screw 6. A C-shaped frame 8 is provided at the bottom of the slider 7. A limiting pulley 9 arranged on one side of the central axis of a pair of guide rollers 3 is rotatably connected between the upper inner wall and the lower inner wall of the C-shaped frame 8. One end of the screw 6 is rotatably connected to the side wall of the support plate 5 on one side, and a motor 10 is provided on the side wall of the support plate 5 on the other side. The output end of the motor 10 is fixedly connected to the other end of the screw 6. A symmetrical screw rod passing through the slider 7 and placed between the support plates 5 is provided. The limiting rod 11 on the outside of the screw 6 plays the role of limiting the slider 7. The screw 6 is symmetrically provided with threads 12 with opposite rotation directions and matching the slider 7, ensuring that the sliders 7 on both sides can move towards and away from each other in opposite directions. By starting the motor 10 to drive the screw 6 to rotate, the sliders 7 are driven to move towards and away from each other in opposite directions, and the limiting pulleys 9 are driven to move towards and away from each other in opposite directions. The distance between the limiting pulleys 9 can be adjusted according to the width of the film so as to limit the film in the lateral direction, so that the film can continuously move along the predetermined line guide, effectively preventing the film from deflecting to one side and affecting the final color printing effect.

[0019] According to the attached Figure 2 As shown: the limiting pulley 9 includes a wheel body 13, baffles 14 fixedly arranged on both sides of the wheel body 13, and the outer wall of the baffle 14 is provided with a rotating shaft 15 rotatably connected to the upper inner wall and the lower inner wall of the C-frame 8, which serves to limit the film of the color printing machine on one side of the wheel body 13 between the baffles 14. The baffle 14 can prevent the film of the color printing machine from detaching from the limiting pulley 9 when it deviates up and down.

[0020] The utility model

[0021] When in use, the film guiding device is installed at a suitable position on the color printing machine, and then the film of the color printing machine is passed through the gap between a pair of guide rollers 3, so that the film of the color printing machine is in contact with the bottom of the upper guide roller 3 and the top of the lower guide roller 3, thereby limiting the longitudinal movement direction of the film, and then starting the motor 10 to drive the screw 6 to rotate, and under the action of the limiting rod 11 and the thread 12 with the opposite rotation direction, the slider 7 is driven to move towards and away from each other in the opposite direction, and then the limiting pulley 9 is driven to move towards and away from each other in the opposite direction, so that the distance between the limiting pulleys 9 can be adjusted according to the width of the film, and the film of the color printing machine is limited to one side of the wheel body 13 between the baffles 14. The baffles 14 can prevent the film of the color printing machine from detaching from the limiting pulley 9 when it deviates up and down, so as to limit the film in the transverse direction, so that the film can continuously move along the predetermined line guide, effectively preventing the film from deflecting to one side and affecting the final color printing effect.

[0022] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A film guiding device for a color printing machine, comprising a bracket 1 (1) and a bracket 2 (2), characterized in that: A pair of guide rollers (3) are rotatably connected between the bracket one (1) and the bracket two (2); a limiting assembly (4) for limiting films of different widths is provided on one side of the guide roller (3); the limiting assembly (4) comprises a support plate (5) fixedly arranged on the upper wall of the side of the bracket one (1) and the bracket two (2); a screw rod (6) is rotatably connected between the support plates (5); a slider (7) is symmetrically threadedly connected on the screw rod (6); a C-shaped frame (8) is provided at the bottom of the slider (7); a limiting pulley (9) arranged on one side of the central axis of the pair of guide rollers (3) is rotatably connected between the upper inner wall and the lower inner wall of the C-shaped frame (8).

2. The film guide device of the color printing machine according to claim 1, characterized in that: One end of the screw rod (6) is rotatably connected to a side wall of the support plate (5) on one side, and a motor (10) is provided on the side wall of the support plate (5) on the other side, and an output end of the motor (10) is fixedly connected to the other end of the screw rod (6).

3. The film guide device of the color printing machine according to claim 1, characterized in that: Limiting rods (11) are symmetrically arranged between the support plates (5) and pass through the slider (7) and are placed outside the screw rod (6).

4. The film guide device of a color printing machine according to claim 1, characterized in that: The screw rod (6) is symmetrically provided with threads (12) with opposite rotation directions and matching the slider (7).

5. The film guide device of a color printing machine according to claim 1, characterized in that: The limiting pulley (9) comprises a wheel body (13) and baffles (14) fixedly arranged on both sides of the wheel body (13); the outer side wall of the baffle (14) is provided with a rotating shaft (15) rotatably connected to the upper inner wall and the lower inner wall of the C-shaped frame (8).

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