JP2509525B2 - Cylinder cleaning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention removes deposits adhering to the surfaces of cylinders and rollers used in blanket cylinders and impression cylinders of printing presses, and other paper and film handling devices such as papermaking machines. The present invention relates to a cylinder cleaning device.

[0002]

2. Description of the Related Art This type of cylinder outer surface cleaning operation is
Conventionally, an operator has manually performed using a cleaning cloth soaked with a cleaning liquid, but recently, the cleaning work has been automated, and various automatic cleaning devices have been developed and put into practical use. As a typical cleaning method, a rotating brush or a comb-shaped brush is brought into contact with the outer surface of the cylinder, that is, the surface to be cleaned, to perform cleaning (JP-A-63-296945 and JP-A-2-1419). ), A cleaning cloth made of a non-woven fabric or the like is contacted and cleaned (JP-A-51-56306). The present invention relates to the latter type of cleaning using a cleaning cloth.

A conventional cleaning device using the cleaning cloth is to automatically supply a cleaning liquid to the cleaning cloth, and to intermittently or continuously send a new cleaning surface to the portion to be cleaned, and to pad the cleaning cloth from the back surface. It is widely known to perform cleaning by pressing the outer surface of a cylinder with a pressing mechanism using a blade or a blade. The cleaning liquid supply mechanism, the cleaning cloth supply / winding mechanism, and the pressing mechanism are configured as a cleaning unit. As a method of pressing the cleaning cloth against the outer surface of the cylinder, which is the surface to be cleaned, the cleaning unit is placed with a predetermined gap with respect to the cylinder, and compressed air is supplied into the pad to expand during cleaning. In addition to pressing the cleaning cloth against the outer surface of the cylinder by means such as, a drive mechanism that rotates the cleaning unit linearly with respect to the cylinder or about a spindle that supports the cleaning unit is provided. It is known that the cleaning cloth is pressed against the outer surface of the cylinder in a state where the cleaning cloth is moved in the cylinder direction.

[0004]

By the way, in the above-mentioned conventional cleaning device, since the pressing mechanism using the pad or the like is used for the pressure contact of the cleaning cloth with the surface to be cleaned, when the cleaning cloth is fed, It is common to release the pressed state to reduce the frictional force and send the cleaning cloth intermittently during that, or use a special material for the contact surface of the pad with the cleaning cloth to reduce friction. . Further, since the cleaning cloth is fed during the cleaning operation by driving the shaft of the take-up roll to wind up the cleaning cloth, a complicated fixed-size feeding mechanism is required to perform the feeding operation accurately. It was That is, in this case, since the winding diameter of the winding roll varies depending on the winding amount, in order to keep the feeding amount of the cleaning cloth constant for each feeding operation, the outer diameter of the winding roll is detected. This is because the detection result must be fed back to control the rotation angle of the winding roll shaft. As described above, the conventional cleaning device requires a complicated cleaning cloth pressing mechanism and feeding mechanism, which is one of the factors that increase the cost. The present invention has been made in view of the above problems, it is an object of complex Feeding good accurate cloth feeding of accuracy also not depend on the control mechanism, such as a traditional is obtained And
It is an object of the present invention to provide a cylinder cleaning device in which the cleaning cloth feeding mechanism is further simplified .

[0005]

According to the present invention, a cleaning cloth sent from the cloth supply roll is provided on the outer surface of the cylinder between the cloth supply roll provided in the cleaning unit and the cloth take-up roll for winding the cleaning cloth. A pressure contact roller for pressure contact is provided, a drive means is connected to the pressure contact roller, the cloth take-up roll is supported adjacently to the pressure contact roller so as to be movable, and the pressure contact roller is biased to the pressure contact roller by a biasing means such as a spring. It is characterized in that it is biased to come into contact.

[0006]

[Function] The cleaning cloth sent out from the cloth supply roll is
It is supplied between the pressure roller and the outer surface of the cylinder to perform a cleaning action at the contact portion. This cleaning cloth feed is
This can be performed easily and accurately by controlling the rotation of the driving means of the pressure roller. Further, since the structure to be in contact with the pressure roller by a biasing means such as a spring the the cloth take-up roll, the winding of the cleaning fabric is performed using the rotational force of the pressure roller.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view showing an essential part of an embodiment of the present invention, and FIG. 2 is a schematic plan view of the same. In the figure, reference numeral 1 denotes a cleaning unit, which is rotatably supported by a support shaft 2 with respect to a main body frame 3. The cleaning unit 1 is configured so that it can be pressed against or separated from the outer surface of a cylinder 4 such as a blanket cylinder by rotating about a support shaft 2 by using a driving means such as an air actuator (not shown). There is. An appropriate number of stays 7 are fixed between the side plates 5 and 6 constituting the cleaning unit 1, and a cloth supply roll 9 for supplying the cleaning cloth 8 and a cloth winding roll 10 for winding the cleaning cloth 8 are mounted. Further, in the middle thereof, the cleaning cloth 8 sent out from the cloth supply roll 9 is provided.
A pressure roller 11 is attached to press the outer surface of the cylinder 4 against the outer surface of the cylinder 4. The pressure roller 11 is connected to a driving means (not shown) via a gear 12 fixed to the end of the pressure roller 11, and the feed of the cleaning cloth 8 is controlled by controlling the rotation of the pressure roller 11. A spray bar 13 for supplying a cleaning liquid to the cleaning cloth 8 is arranged in front of the pressure roller 11.

3 to 5 are partially enlarged views showing the essential parts of the support mechanism of the cloth winding roll 10. The cloth winding roll 10 is rotatably supported by a slide block 15 slidably mounted on rectangular windows 14 formed on the side plates 5 and 6. Further, the slide block 15 is biased toward the pressure contact roller 11 side by a biasing means such as a spring 16. Therefore, the cloth winding roll 1
0 is always in contact with the pressure contact roller 11, and rotates with the rotation of the pressure contact roller 11 to wind up the cleaning cloth 8. As the cleaning operation progresses, the winding amount increases and the winding roll 1
As the outer diameter of 0 increases, the slide block 13 resists the urging force of the spring 16 and moves to the right as shown in FIG.

When using the cylinder cleaning apparatus of the above embodiment, the cleaning cloth 8 is transferred from the cloth supply roll 9 to the pressure roller 1
1 is set on the take-up roll 10 and the cleaning unit 1 is rotated about the support shaft 2 by a driving means such as an air actuator (not shown) to wash the cleaning cloth 8 on the pressing roller 11 portion.
The outer surface of the cylinder 4 is brought into contact with the outer surface of the cylinder 4. A cleaning liquid is sprayed from the spray bar 13 onto the cleaning cloth 8. In this state, the cylinder 4 is rotated, and the adhering matter attached to the outer surface thereof is wiped off with the cleaning cloth 8. In this case, the pressing force of the pressing roller 11 can be adjusted by controlling the output of the air actuator or the like.

When the cleaning cloth 8 is fed by a predetermined amount, the pressing roller 11 is driven and rotated by a predetermined angle to advance the cleaning cloth 8 by a predetermined amount and send a new cleaning surface to the cleaning section. . In this case, the pressure roller 11 may be kept in pressure contact with the cylinder 4 or may be in a separated state. As described above, since the cloth take-up roll 10 is in contact with the pressure contact roller 11 by the urging force of the spring 16, the fed cleaning cloth 8 is automatically taken up by the take-up roll 11 by its frictional force. In addition, the cloth winding roll 10
It is also possible to additionally attach a reverse rotation prevention mechanism or the like that allows rotation only in the winding direction. As the cleaning operation progresses and the winding amount of the cleaning cloth 8 increases and the outer diameter of the winding roll 10 increases, as described above, the slide block 13 resists the biasing force of the spring 16 and, as shown in FIG. Thus, the increase in the winding amount is absorbed while moving to the right and maintaining the contact state.

As described above, the feeding operation of the cleaning cloth 8 in the present cleaning apparatus is performed by the rotation control of the pressure contact roller 11 whose outer diameter is always constant. Good and accurate feeding operation can be easily obtained. Further, the winding operation of the cloth winding roll 10 is performed by bringing the cloth winding roll 10 into contact with the pressure contact roller 11 by the urging means such as the spring 16 and utilizing the rotational force of the pressure contact roller 11. It will be extremely easy.

In the above description of the embodiment , the pressure contact roller 11 is pressed against or separated from the outer surface of the cylinder 4 by rotating the cleaning unit 1 about the support shaft 2. The case where the present invention is applied to the so-called swing type has been described, but the present invention can also be applied to a reciprocating type in which the cleaning unit 1 is moved back and forth to perform pressure contact and separation. The cylinder 4 may rotate in either direction during the cleaning operation, and the pressure roller 11 and the cylinder 4 may rotate.
When the moving directions of the pressure contact surfaces of and are set to coincide with each other, the cleaning action is performed by the relative movement of the pressure contact surfaces based on the difference in peripheral speed between the two.

[0013]

According to the present invention, the following effects can be obtained based on the above configuration. (1) Since the cleaning cloth is fed by the pressure contact roller having a constant outer diameter, a complicated control mechanism for constant-dimension feeding, which is required in the prior art, is not required, and the configuration can be greatly simplified. (2) Since the feeding operation of the cleaning cloth is performed by the rotation control of the pressing roller, accurate and accurate feeding can be easily obtained. (3) Moreover, since always brought into contact with the pressure roller by an urging means such as a spring to the cloth take-up roll, since it becomes possible winding of the cleaning fabric by utilizing the rotational force of the pressure roller,
The configuration can be simplified.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a main part of an embodiment of the present invention.

FIG. 2 is a schematic plan view of the same.

FIG. 3 is a partially enlarged view showing a main part of a support mechanism for a cloth winding roll.

FIG. 4 is a sectional view taken along line AA of FIG.

5 is a partially enlarged view showing another winding state of FIG. 3. FIG.

[Explanation of symbols]

1 ... Washing unit, 2 ... Spindle, 3 ... Machine frame, 4 ...
Cylinder, 5, 6 ... Side plate, 7 ... Stay, 8 ...
Cleaning cloth, 9 ... cloth supply roll, 10 ... cloth winding roll, 1
1 ... Pressure contact roller, 12 ... Gear, 13 ... Spray bar, 1
4 ... Window, 15 ... Slide block, 16 ... Spring

Claims (1)

(57) [Claims] 1. A press contact for press-contacting a cleaning cloth sent from the cloth supply roll to an outer surface of a cylinder between a cloth supply roll for supplying a cleaning cloth and a cloth take-up roll for winding the cleaning cloth provided in the cleaning unit. A roller is provided, the drive means is connected to the pressure contact roller, and the cloth winding roll is also provided.
Is movably supported adjacent to the pressure contact roller, and
Contact the pressure contact roller by a biasing means such as a spring
Cylinder cleaning device characterized in that it is urged as follows.