JPH059170Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a dust prevention device for rollers for moving an ink unit in a printing press.

<Prior Art> As an example of a multi-color printing machine, a general side view of a concave plate printing machine is shown in FIG.

The printing press 1 includes a paper feeder 2, a printing device 3, and a paper ejection device 4. The paper feeding device 2 is configured to stack papers 6 on its paper stacking table 5 and feed them out one by one. The printing device 3 includes an impression cylinder 7 and an intaglio cylinder 8. A plurality of (three in this example) ink forming rollers 9 are in contact with the intaglio surface of the circumferential surface of the intaglio cylinder 8, and an inking device that supplies ink to the ink forming rollers 9 is provided on the paper discharge side. An inking unit 10 is arranged. In the ink unit 10, reference numeral 11 in the figure is an ink fountain, and the roller group is omitted. Paper 6 fed from paper feeder 2
is printed by passing between the impression cylinder 7 and the intaglio cylinder 8. The paper ejection device 4 includes a paper ejection chain 14 extending from the paper ejection side of the impression cylinder 7 above the paper stacking tables 12 and 13, and the printed paper 6 is passed through the paper ejection chain 1.
4, and are switched and stacked on paper stacking tables 12 and 13 every predetermined amount.

In the printing machine 1, the ink unit 10
is retracted as shown by the two-dot chain line in FIG. 4 when cleaning or replacing the printing plate. Therefore, as shown in FIG.
A large number of rollers 18 are disposed between the bed 17 of the printing unit 16 of the printing device 3, and the printing unit 16
The ink unit 10 can be moved easily and smoothly.

<Problems to be solved by the invention> However, in the printing press 1, since the upper part of the roller 18 is left open, it is easy for dust, dirt, foreign matter, etc. to enter. This may cause problems such as damaging the roller surface or shifting the parallelism of the ink unit 10, resulting in a loss of machine accuracy. Further, since there is a step between the top surface of the bed 17 and the top surface 18, there is a danger that the worker may trip.

<Means for Solving the Problems> In order to solve the above problems, in the present invention, a large number of rollers are arranged on the top surface of the bed of the printing unit, and the ink unit is placed on the rollers to ink. In a printing press in which the unit can be coupled to and separated from the printing unit via the roller, the upper surface of the roller is covered with a thin metal plate, one end of the thin metal plate is fixed to the frame of the inking unit, and The other end was wound in a spiral shape and supported to form a dustproof device for the roller for moving the ink unit.

<Function> In the above-mentioned dustproof device for a roller for moving an inking unit, the thin metal plate is unwound or wound up as the inking unit moves, and the upper surface of the roller is always covered with the thin metal plate.

<Example> Fig. 1 shows a schematic side view of a roller dust prevention device for moving an ink unit according to an embodiment of the present invention, Fig. 2 shows its plan view, and Fig. 3 shows a cross-sectional view of the roller dust-proof device for moving an ink unit according to an embodiment of the present invention. - A cross section is shown.

Reference numeral 17 denotes a bed placed on the floor or the like, on which a printing unit (see FIG. 5) is integrally assembled. As shown in FIG. 3, the upper surface of the bed 17 is stepped with a raised central portion, and a number of rollers 18 are rotatably arranged on the lower surface 19 on both the left and right sides. The dimensions of the rollers 18 are determined so that their upper surfaces are located below the upper surface 20 of the bed 17. A guide plate 21 having the same height as the bed upper surface 20 is attached to the side surface of the bed 17, and the shaft 22 of the roller 18 is supported on this guide plate 21. In the figure, 23 is a connecting plate that connects the other end of the roller 18.

An ink unit 10 is mounted on the above-mentioned large number of rollers 18.
A frame 15 (see FIG. 5) is placed thereon so that the inking unit 10 can be moved separately or coupled to the printing unit. Note that the movement of the ink unit 10 is carried out by a hydraulic cylinder (not shown) connected to the ink unit 10.
It is done by.

On the lower surface 19 of the upper surface of the bed, stoppers 24a and 24b are provided on extensions of the inking unit 10 in the coupling and separating movement directions, respectively, so as to restrict the moving ends of the inking unit 10.

On the front and rear sides of the ink unit 10,
Band-shaped thin steel plates 25a and 25b are provided spanning the upper surface of the bed 20 and the upper surface of the guide plate 21 and covering the upper part of the rollers 18.
One ends of a and 25b are fixed to the front and rear parts of the frame 15 of the inking unit 10 by fixing fittings 26, and the other ends are fixed to the stoppers 24a and 24, respectively.
Pits 27a, 27b provided on the outside of b
The pins 28a,
It is supported on the bed 17 side by 28b. The fixing fitting 26 has a dogleg shape in which the thin steel plates 25a and 25b are placed along the upper surface of the bed 20 and the upper surface of the guide plate 21. Further, in order to prevent the thin steel plates 25a and 25b wound in a spiral shape from jumping out vertically and horizontally, the spiral portions are attached to brackets 29a and 29a.
9b. Thin steel plates 25a, 25
The spirally wound part b is designed so that its drawer or winding opening is located below the upper surface of the bed 20 and the upper surface of the guide plate 21. By doing this, the thin steel plates 25a, 2
5b is made of a spring material and comes into contact with the upper surface of the bed 20 and the upper surface of the guide plate 21 without any gaps.

Incidentally, the stoppers 24a, 24b are provided with dust removers 30a, 30b in contact with the upper and lower surfaces of the thin steel plates 25a, 25b.

In the above dustproof device, when the inking unit 10 moves forward after cleaning or replacing the plate cylinder, the thin steel plate 25a on the rear side of the inking unit 10 is pulled and drawn out, and the thin steel plate 25a on the front side of the inking unit 10
5b is wound up by the spring force of the thin steel plate 25b. Tension always acts on the thin steel plates 25a and 25b, and both edges of the thin steel plates 25a and 25b are connected to the bed upper surface 20 and the guide plate 2.
1, the entire length of the upper surface of the moving roller 18 is always covered with the thin steel plates 25a, 25b, thereby preventing dust, dirt, foreign matter, etc. from entering the roller surface. In addition, thin steel plate 25
a, 25b are dust collectors 30a, near the winding side;
Since the front and back surfaces are wiped by 30b, it is also possible to prevent dust and the like from getting caught in the spiral portion. Furthermore, as shown in FIG. 3, since the top surface of the bed on which the worker rests is flat, there is no chance of the worker tripping, and the thin steel plate 25
Even if a worker stands on a or 25b, the structure will only be temporarily deformed, and once the worker gets off, it will return to its original state due to its spring elasticity, so there will be no problem at all.

When the inking unit 10 moves backward, the thin steel plate 25a on the rear side of the inking unit 10 is wound up by the spring force, and the thin steel plate 25b on the front side is unwound, and similarly, the upper surface of the rollers is always
covered with b.

In the above embodiment, thin steel plates 25a and 25b are used as the metal plates, but various other materials having spring elasticity (for example, stainless steel) can be used depending on their functions. Also,
As shown in Figure 3, the thin metal plate is made convex at the center in the width direction.
Close contact between the bed 17 and the guide plate 21 side becomes more reliable.

<Effects of the invention> According to the dust-proofing device for rollers for moving inking units according to the invention, the upper surfaces of the rollers are always covered with a thin metal plate regardless of whether the inking unit is stopped or moving, so dust etc. do not enter the roller surfaces. This prevents damage to the rollers, and also prevents deterioration in accuracy due to the ink unit being out of parallelism. Furthermore, since there is no step on the top surface of the bed, it is safe for workers to move around.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a roller dust-proofing device for moving an ink unit according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. The figure is a side view of the entire printing press, and FIG. 5 is a detailed side view of the ink unit. In the drawing, 1 is a printing machine, 3 is a printing device, 6 is paper,
7 is an impression cylinder, 8 is an intaglio cylinder, 9 is an ink forming roller, 1
0 is the ink unit, 15 is the frame of the ink unit, 16 is the printing unit, 17 is the bed, 1
8 is a roller, 19 and 20 are the upper surfaces of the bed, 21 is a guide plate, and 25a and 25b are thin steel plates.

Claims (1)

[Scope of utility model registration request] A large number of rollers are arranged on the top surface of the bed of the printing unit, and the ink unit is placed on the rollers.
In a printing press in which the inking unit can be coupled to and separated from the printing unit via the roller, the upper surface of the roller is covered with a thin metal plate, and one end of the thin metal plate is fixed to the frame of the inking unit. A dustproof device for a roller for moving an ink unit, characterized in that the other end is wound and supported in a spiral shape.