Brushing – scrubbing – and general cleaning – Attachments – Moving surface scraper – wiper – or brush
Reexamination Certificate
2000-01-25
2001-12-25
Chin, Randall E. (Department: 1744)
Brushing, scrubbing, and general cleaning
Attachments
Moving surface scraper, wiper, or brush
C101S425000
Reexamination Certificate
active
06332238
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a cylinder cleaning device for cleaning a surface of a cylinder, such as a blanket cylinder of an offset printing machine, an impression cylinder, plate cylinder, or an ink roller. More particularly, the invention relates to a cylinder cleaning device in which the support and fabric insertion members form an assembly with an installed cleaning fabric made in a roll form, or folded in a pleated form (folded in zigzags), or a container holding the cleaning fabric supply element is located thereon.
2. Description of Related Art
Conventionally, in a cylinder cleaning device for cleaning the surface of a cylinder, such as a blanket cylinder of an offset printing machine, using a cleaning fabric, the cleaning fabric is wrapped around a hollow core to form a cleaning fabric roll, into which a rigid shaft, usually made of metal, is inserted. This metal shaft in the cleaning unit functions as a rotation shaft. Such an arrangement has been widely used. As an improvement, a method of directly holding a core to make it a rotation shaft without using such a metal shaft has been proposed in, for example, Japanese Patent Application Laid-open No. Hei 4-234659 Official Gazette.
However, when no metal shaft is used, the rigidness of the cleaning fabric roll is reduced, and the center of the roll deflects by forces applied to the cleaning fabric advancement means so that the cleaning cloth is not uniformly supplied. Thus, there is a danger that a roll will disengage the frame to which it is mounted and fall into the printing machine.
Since the outer diameter of the metal shaft and the dimension of the device used for directly mounting a core to the cleaning device differ in accordance with the kind of cleaning device, not every cleaning fabric roll can be used in every kind of cleaning device. Furthermore, attaching a cleaning fabric roll to the cleaning device, which involves inserting a heavy shaft of strong rigidity into the core, affixing the shaft and core together, and attaching them to the cleaning unit, is cumbersome.
Additionally, using a core rather than a metal shaft has the disadvantage of reducing the amount of space for winding the cleaning fabric thereon since the core wall thickness will increase. In an attempt to increase efficiency, the diameter of the core was reduced. The reduced diameter, however, resulted in a weakened core that could not be attached to the cleaning device with a conventional metal shaft.
It is therefore an object of the present invention to provide a cylinder cleaning device in which the space efficiency for the cleaning fabric supply element is improved by making the roll core part extremely thin, or without using a roll core.
It is another object of the present invention to provide a cylinder cleaning device having a cleaning fabric attaching means which can attach cleaning fabric rolls of different kinds. It is yet another object of the present invention to provide a cylinder cleaning device having an attaching means which can attach cleaning fabric with roll cores of different diameters. It is yet another object of the present invention to provide a cylinder cleaning device having an attaching means which can attach cleaning fabric can easily to a cleaning device with less labor required. It is yet another object of the present invention to provide a cylinder cleaning device having an attaching means which can attach cleaning fabric and can be applied not only for the cleaning fabric in a roll form but also for the cleaning cloth folded in a pleated form, and in container holding form.
SUMMARY OF THE INVENTION
In order to attain the above-described objective, the invention is a cylinder cleaning device which presses the cleaning fabric supplied from the cleaning fabric supply element against a cylinder outer circumference and cleans the cylinder outer circumference surface. A cleaning fabric supply element supporting and receiving means holds and supports the outer circumference of the cleaning fabric supply element, wherein the cleaning fabric supply element may have different forms. Preferably, a means for receiving and supporting is connected to a frame of a cylinder cleaning device, but it can be connected to a frame of the printing press. For example, cleaning fabric supply elements be single rolls with cores of different diameters, or in a pleated form without a roll core, or in container holding form.
Certain other preferred embodiments include:
(1) A cylinder cleaning device in which the cleaning fabric supply element is received in a container and a cylinder outer circumference surface is cleaned by pressing the cleaning fabric supplied from the cleaning fabric supply element in the container against the cylinder outer circumference, and is arranged so that a means for receiving and supporting the container holds the container thereon.
In this arrangement, in which the cleaning fabric supply element is packaged in a rigid container, such as a cassette or cartridge or a container made of film or other packaging material, and then supported by the receiving and supporting means, convenience in handling the cleaning fabric supply element is improved. Especially in the case of the cleaning fabric which is impregnated with a detergent in a liquid form, jellied form, paste form and the like, a container can prevent a detergent from volatilizing and drying, so that performance reduction of the cleaning fabric can be prevented and handling can be made easier. When a highly volatile detergent is used, it becomes more effective by being container enclosed. When a lot of detergent is used as in the case, for example, of the cleaning fabric, for the cylinder cleaning device of an web offset printing machine, the amount of detergent with which the cleaning fabric is impregnated or which is applied to the cleaning fabric is a container can prevent the detergent oozing from the cleaning fabric.
(2) A means for receiving and supporting a cleaning fabric supply element or a container holding a cleaning fabric supply body is provided with a receiving and supporting member which holds the outer circumference of the cleaning fabric supply element or the container with one end supported by a shaft so as to be rotatable and a mechanism for rotating the receiving and supporting member.
When the cleaning fabric supply element itself or the container is attached on or removed from the receiving and supporting member, the receiving and supporting member is rotated and the opening part for handling is widened so that the operation can be simplified. In the case of a method of rolling the cleaning fabric supplied from the cleaning fabric supply element to a cleaning fabric take up reel, the receiving and supporting member does not contact the cleaning fabric take up reel even when the diameter of the cleaning fabric take up reel increases from the cleaning fabric being wrapped around it, because the receiving and supporting member is moved in the direction away from the cleaning fabric take up reel. In other words, the receiving and supporting member moves as the diameter of the cleaning fabric supply element becomes smaller, so that the receiving and supporting member does not interfere with the cleaning fabric take up reel. Accordingly, the device can be made compact by positioning the cleaning fabric receiving and supporting means close to the cleaning fabric take up reel.
(3) A roll which contacts the cleaning fabric and is rotatable in the fabric sending direction, and reverse direction, or only in the fabric sending direction is positioned between the cleaning fabric supply element and a cleaning device pressing part that contacts the cleaning fabric with a cylinder to be cleaned in any of the previous embodiments.
In this arrangement, the cleaning fabric is smoothly supplied to the cleaning device pressing part by the rotation of the roll. Especially in the case of the cleaning impregnated with a detergent, if there is a portion which is compressed before the cylinder pressing
Gasparrini C. Robert
Hara Akira
Onuma Hiraku
Oyaizu Hideo
Suzuki Yuuichi
Baldwin-Japan Ltd.
Chin Randall E.
Morgan & Finnegan , LLP
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