JP2002264303A - Device for cleaning and water stopping of water bar in offset press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device by which cleaning and water stopping of a water bar can be automatically and easily performed without labor and time. SOLUTION: A nozzle 4 by which water 7 can be jetted toward a part of a molleton fabric of a water bar roller 1 is provided and the water bar roller 1 is placed on a roller 2 connected with a motor and is rotated thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of printing a Molton fabric (hereinafter, abbreviated as "water bar") of a water bar roller, which is soiled with ink, in an offset printing machine after one day of printing, by using almost gasoline (or water). This is a device that performs automatic washing and draining without using a water rod washing liquid).

[0002]

2. Description of the Related Art Up to now, washing and draining of a water rod have been almost done by hand, and it is an operation that requires labor, power and energy. First, rub it with a scrubber while applying gasoline (or water washing solution) to the water bar to dissolve the attached ink. Then, apply the corner of a wrench or ink wrench to the water bar and handle it along the axis of the water bar to dissolve. Gasoline (or water rod cleaning liquid)
And then rubbing with water, rubbing with a scourer, rinsing with water, and then using a water rod to squeeze out water once or twice to wash and drain the water rod. In particular, this draining requires power, and it is necessary to touch the corner of a wrench (or ink wrench) to handle one row of water rods, and then quickly turn the water rods to handle the next row without water seepage. Repeat one dozen times to finish draining one water stick once.
~ 2 times, 2 ~ 3 times washing with water and 4 ~ 6 times draining. Since one printing press has two or three water rods, washing and draining the water rods is a difficult task. It was invented in response to a request to make this work easier.

[0003]

(A) The present invention is intended to automatically and easily perform washing and draining of a water rod which requires time and labor and requires power and energy. (B) Gasoline (white gasoline is used) and water rod cleaning liquid are expensive, care is taken in handling, and we want to save as much as possible from the viewpoint of environmental protection.

[0004]

(A) A water rod roller is set on a roller connected to a motor so that the roller can be rotated. (B) so that water can be sprayed in a single row across the width of the water bar,
Horizontally extending spray nozzles are installed at intervals of several centimeters. (C) Install the roller on the lower roller so that the corner of the rubber plate that is full width of the roller hits. The device as described above is made.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described. (A) A roller is rotated while water is sprayed from a nozzle toward a water rod. (B) The water jetted from the nozzle hits a water rod placed on a rotating roller, and as the water rod rotates, the ink stain on the entire water rod is washed away. (C) Further, when the portion of the water rod containing a large amount of water rotates down and comes into contact with the roller, the water is pushed out together with the ink stain by the pressure of the roller. (D) After several minutes, the effects of (b) and (c) are repeated hundreds of times, so that the water rod is clean. (E) When the water is stopped there, the water continues to be pushed out by pressure at the portion where the water bar roller and the lower roller are in contact. The water on the lower roller is scraped off at the corners of the rubber plate. (F) stopping the injection of water, it is rotated for a few minutes rollers process hundreds repeated can draining of water rods (e).

[0006] In implementing the present invention, the following can be performed. (B) Two lower rollers may be used, and one water rod may be placed between them. (B) By further increasing the number of lower rollers, as shown in (a), several water rods can be washed and drained at a time. (C) The water rod roller can be connected to a different motor from the lower roller to rotate the water rod and the lower roller so that they rub against each other. In this case, both the washing action and the draining action increase the effect. (D) In order to increase the contact pressure between the water bar roller and the roller under it, and to enhance the effect of pushing out water, it is necessary to install a device that superimposes the roller on the water bar roller, and to install the shaft at both ends of the water bar roller. Can be pressed with a spring to apply pressure.

The materials for the roller and the rubber plate are as follows: (a) The roller may be made of any of metal, rubber, and resin which are processed to prevent rust. (B) a rubber plate may be a resin plate.

[0008]

(A) Since the labor of cleaning the water rod and draining, which was a manual labor of heavy labor, can be performed automatically, the labor can be reduced. (B) Since the daily consumption of gasoline (or water rod cleaning liquid) and the consumption of the water rod cloth can be reduced, it is economical and environmental protection in the long run.

The reason why ink stains can be removed only with water without using gasoline or a water rod cleaning solution is as follows. (A) In offset printing, the water rod is initially filled with water, Therefore, even if the water bar is soiled after printing, the water-repellent ink cannot penetrate into the fibers of the water bar but only adheres to the hair of the water bar. (B) When the water sprayed from the nozzle hits the hair of the water rod,
Ink that adheres to the hair drops due to the impact of foam and popping in the area of the water and the water hit. (C) Since pressure is applied to the part where the water rod roller and the roller below it are in contact, the part of the water rod that has swollen to the contact point and expands with plenty of water is sandwiched between the rollers and compressed to contain The water is pushed out along with the ink. (D) If the operations (b) and (c) are repeated hundreds of times, the ink stains on the ordinary water stick are washed away.

[Brief description of the drawings]

FIG. 1 is a front view of the apparatus of the present invention.

FIG. 2 is a side view of the device.

FIG. 3 is a cross-sectional view of a central portion of the device, in which the device is operating;

FIG. 4

FIG. 3 shows a state in which the injection of water is stopped and the apparatus is operating.

[Explanation of symbols]

 1 is a water rod 2 is a roller 3 is a rubber plate 4 is a nozzle 5 is a motor 6 is a contact between a water rod and a roller 7 is water

Claims (3)

[Claims] An apparatus for washing and draining a water rod, comprising a nozzle capable of spraying water toward a part of the molton fabric of a water rod roller. 2. A washing device for a water rod, wherein a water rod roller is mounted on a roller connected to a motor so as to be rotated.
Drainer. 3. The water on the roller can be scraped off.
A washing and draining device for water rods installed so that the corners of the rubber plate hit the entire width of one row of the roller.