JPH0360782A - Drum washing device - Google Patents

Abstract

PURPOSE:To surely remove the foreign matter sticking to annular brushing hair groups by providing brushes for washing having the brushing hair groups and nozzles for discharging a washing liquid. CONSTITUTION:The washing liquid is discharged to the brushing hair groups 5 of the brushes 4 for washing while the liquid is ultrasonically oscillated. Aluminum stock pipes A are lowered in this state and are inserted into the brushing hair groups 5 while the pipes are kept rotated. The aluminum stock pipes A are washed in this way. The aluminum stock pipes A are risen and are pulled up from the brushing hair groups 5 when the entire part is inserted. The foreign matter removed from the aluminum stock pipes A and sticked to the brushing hair groups 5 is washed away at this time and the brushing hair groups are surely washed. The washing effect of the drums are additionally improved in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a drum cleaning device for cleaning drums such as aluminum tubes used for photosensitive drums of image forming apparatuses.

(Prior Art) Photosensitive drums used in image forming apparatuses such as electrophotographic copying machines and printers are manufactured by laminating a photosensitive material on the outer peripheral surface of an aluminum tube. In order to layer the photosensitive material to a uniform thickness, the aluminum tube is cleaned before the photosensitive material is layered to remove foreign substances such as metal powder and oils and fats adhering to its surface.

An example of a method for cleaning an aluminum tube is a method of cleaning the aluminum tube by ultrasonically vibrating a cleaning liquid in which the aluminum tube is immersed, as disclosed in Japanese Patent Application Laid-Open No. 108568/1983. Are known.

However, with this method, the aluminum tube must be immersed in the cleaning solution for a long time in order to completely remove foreign substances that are firmly attached to the tube, which reduces work efficiency. There are drawbacks.

Therefore, the applicant installed a plurality of cleaning brushes having ring-shaped bristles in the cleaning liquid stored in the cleaning tank, and while the cleaning liquid was vibrated by ultrasonic waves, the aluminum tube was rotated. The present invention proposes a cleaning device that can efficiently and reliably remove foreign matter adhering to an aluminum tube in a short period of time by passing the brush bristles vertically through the inside of the brush bristles and bringing the brush bristles into sliding contact with the aluminum tube. (Utility Application No. 14311/1983).

(Problem to be Solved by the Invention) However, when cleaning aluminum tubes using a cleaning brush, some of the foreign matter released from the aluminum tube into the cleaning solution may enter the gaps between the bristles of the cleaning brush. It may adhere to brush bristles. Therefore, as the number of times the aluminum tube is washed increases, the brush bristles get dirty with the dust, and foreign matter comes into sliding contact with the brush bristles and re-attaches to the cleaned aluminum tube. Foreign matter that has separated from the brush bristles is usually floating in the coating liquid, and when the aluminum tube is pulled up from the coating liquid, there is a risk that the foreign matter in the coating liquid will re-adhere to the aluminum tube. When foreign matter re-adheres to the aluminum tube in this way, the aluminum tube is treated as having been cleaned and is transported to the next step where a photosensitive material is applied to the outer circumferential surface. The photosensitive material cannot be coated to a uniform thickness because the foreign matter is mixed in and attached to the outer peripheral surface of the aluminum tube together with the photosensitive material, or because the photosensitive material is coated on the foreign matter that has been attached from the beginning.

The present invention has been made in view of the above problems, and its purpose is to effectively remove foreign matter adhering to the brush bristles of a cleaning brush, and to eliminate the foreign matter removed by the cleaning liquid from aluminum. The object of the present invention is to provide a drum cleaning device that is free from the risk of re-adhesion of pipes, etc. to the drum.

(Means for Solving the Problems) The drum cleaning device of the present invention includes a cleaning brush having a group of annular bristles that slides on the outer peripheral surface of a drum that is inserted through the inside, and a cleaning liquid directed toward the group of bristles. and a nozzle for discharging, thereby achieving the above object.

(Function) According to the present invention, the cleaning liquid discharged from the nozzle toward the annular group of bristles of the cleaning brush and the group of brush bristles that slide into contact with the outer circumferential surface of the drum through which the group of bristles is inserted , the outer peripheral surface of the drum is reliably cleaned. Even if foreign matter removed from the drum adheres to the brush bristles, the cleaning liquid discharged from the nozzle will ensure that they are removed from the brush bristles.
There is no risk of it re-adhering to the drum.

(Example) Next, the present invention will be described with reference to an example. The drum cleaning device of the present invention is used to clean the outer circumferential surface of an aluminum tube on which a photosensitive layer is formed when manufacturing a photosensitive drum in which a photosensitive layer is formed on the outer circumferential surface of an aluminum tube. used for. As shown in FIG. 1, this drum cleaning device includes a plate 3 provided with a cleaning brush 4 having a ring-shaped group of bristles 5 on a cleaning liquid storage tank 1. As shown in FIG. 2, the cleaning brush 4 has brush bristles 5 that can come into sliding contact with the outer peripheral surface of the aluminum tube A when the aluminum tube A to be cleaned passes through the brush electrolyte 5. It looks like this.

An annular nozzle 7 surrounding the top of the cleaning brush 5 is disposed on the plate 3 . The nozzle 7 has a discharge port 1
1 are continuously provided facing downward on the inner circumference, and therefore, the discharge ports 11 face the group of brush bristles 5. The cleaning liquid is supplied to the nozzle 7 so that the cleaning liquid is discharged from the discharge port 11, and the supplied cleaning liquid is discharged toward the group of bristles 5 of the cleaning brush 5.

An ultrasonic oscillator 10 is attached to the nozzle 7 and causes the cleaning liquid discharged from the nozzle 7 to vibrate ultrasonically.

The cleaning liquid storage tank l is arranged below the plate 3 to which the cleaning brush 4 and the annular nozzle 7 are attached.
It is designed to accommodate cleaning liquid discharged from the tank. The cleaning liquid storage tank 1 is configured such that the cleaning liquid contained therein is circulated by a pump 8 and passed through a filter 9 before being fed to the nozzle 7 .

The cleaning liquid storage tank 1 is arranged so that the drum A passing through the brush electrolyte 5 of the cleaning brush 4 is not immersed in the cleaning liquid discharged from the nozzle 7 and stored in the cleaning liquid storage tank 1.

The nozzle 7 may have a continuous annular discharge port 11, or may have a plurality of discharge ports arranged in an annular shape.

When the object to be cleaned is the aluminum tube A used as the photoreceptor drum, a degreasing cleaning liquid such as dichloromethane is suitably used as the cleaning liquid.

In such a tJIlit cleaning device, the filtered clean cleaning liquid is applied to the cleaning brush 4 while being ultrasonically vibrated.
In the state in which the aluminum tube A is discharged onto the brush bristles group 5 , the aluminum tube A is rotated and lowered to be inserted into the brush electrolyte 5 . As a result, clean and ultrasonic-vibrated cleaning liquid is discharged from the nozzle 7 onto the aluminum tube A, and the ultrasonic-vibrated cleaning liquid and the aluminum tube A
The aluminum tube A is cleaned by the group of brush bristles 5 that are in sliding contact with the outer circumferential surface of the aluminum pipe A. The cleaning liquid discharged toward the brush bristle group 5 removes foreign matter adhering to the brush bristle group 5 from the brush bristle group 5.

When substantially the entire aluminum tube A is inserted through the brush electrolyzer 5, the aluminum tube A is raised and pulled out from the brush bristle group 5. At this time as well, the outer circumferential surface of the aluminum tube A is cleaned by the cleaning liquid and the brush group 5. At this time, even if the foreign matter removed from the aluminum tube A and attached to the brush bristles group 5 is
Even if the foreign matter detaches from the aluminum tube A and reattaches to the aluminum tube A, the foreign matter is washed away with a clean cleaning solution, and the aluminum tube A is reliably cleaned.

When the aluminum tube A is cleaned in this way,
Next, the aluminum tube A to be cleaned is transported and inserted into the brush electrolysis 5 of the cleaning brush 4, but the nozzle By constantly discharging clean cleaning liquid from 7, foreign matter adhering to the brush bristles group 5 can be removed not only when the aluminum tube A is being cleaned, but also when the aluminum tube A is not being cleaned. The foreign matter is removed and re-adhesion to the aluminum tube A is reliably prevented.

In the above explanation, the drum of the object to be cleaned is an aluminum tube used for the photoreceptor drum of an image forming apparatus. However, the cleaning device of the present invention is suitable for cleaning objects that are drums other than aluminum tubes. Good too.

(Effects of the Invention) As described above, the cleaning device of the present invention reliably cleans the drum without immersing it in the cleaning liquid, and there is no fear that foreign matter removed from the drum will re-adhere to the drum. Since the brush bristles can be constantly cleaned with the cleaning liquid, the cleaning effect of the drum is further improved. As a result, a situation in which foreign matter reattached to the drum is carried into the next process is prevented.

4. Don't worry! I Fig. 1 is a sectional view showing an embodiment of the drum cleaning device of the present invention, and Fig. 2 is a plan view showing the relationship in size between the aluminum tube and the brush bristles.

1...Cleaning liquid storage tank, 4...Cleaning brush, 5...
・Brush bristle group, 9...Filter, 7...Nozzle, 1
0...Ultrasonic transmitter, A...Aluminum tube.

that's all

Claims (1)

[Claims] 1. A drum comprising: a cleaning brush having an annular group of bristles that slides on the outer peripheral surface of the drum that is inserted through the drum; and a nozzle that discharges a cleaning liquid toward the group of bristles. cleaning equipment.