JPH041671B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a drum separation method, and particularly to a separation method that allows a drum coated with a quick-drying coating liquid to be easily separated from a mounting member after drying.

(Prior art) As shown in FIG. 3, a cylindrical drum 101
Apparatus 100 for applying coating liquid 105 to
A pair of spacers 102 and 103 having the same outer diameter as the drum 101 are coaxially connected to both open ends of the drum 101, and the drum 101 is moved to a coating liquid storage container 104 provided in contact with the outer peripheral surface of the drum. By doing so, the coating liquid 105 is applied to the outer peripheral surface of the drum. However, in this apparatus 100, when a quick-drying coating liquid 105 is used, the drum 1
Coating liquid 10 that has entered the minute gap 106 between the connection between 01 and spacers 102 and 103
The drum 101 and the spacers 102 and 103 may be bonded to each other as the drum 101 dries quickly and acts as an adhesive. The drum 101 and the spacers 102 and 103 may adhere to each other due to the surface tension of the coating liquid 105 that has entered the minute gap 106. As a result, when separating the spacer 102 from the drum 101, the lightweight drum 1
01 is lifted up together with the spacer 102. Since such drum coating work is automated by robot operation, continuous drum coating cannot be performed smoothly in the apparatus 100 described above.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems of the prior art, and its purpose is to separate the drum and spacer by pulling up the spacer at an appropriate inclination with respect to the axial direction. The objective is to provide a method for separating the Another object of the present invention is to provide a drum separation method that is simple in process and easy to operate. Yet another object of the present invention is to provide a method for continuously and smoothly separating drums.

(Means for Solving the Problems) The present invention provides a drum support member that is disposed near the bonded portion formed at the connection portion between the drum and the spacer during the coating process, and supports the spacer while supporting the drum with the support member. The feature is that the drum and spacer can be separated continuously and smoothly by pulling up at an appropriate inclination with respect to the direction. The drum separation method of the present invention includes: a cylindrical drum whose outer peripheral surface is to be coated with a coating liquid; a pair of spacers having the same outer diameter as the cylindrical drum and coaxially connected to both open ends of the cylindrical drum; A drum coating device having a coating liquid storage container disposed in contact with the outer circumferential surface of the cylindrical drum applies a coating liquid to the outer circumferential surface of the cylindrical drum while moving the cylindrical drum in the axial direction, and after drying, at least one spacer is removed. A method of separating the drum from the cylindrical drum using spacer removal means, the spacer being separated from the cylindrical drum by the spacer removal means, while supporting at least a part of the drum in the vicinity of the connecting portion with the spacer. This includes lifting at an angle, whereby the above objective is achieved.

(Example) The present invention will be described in detail below with reference to Examples.

As shown in FIGS. 1a and 1b, the apparatus 1 for coating a drum includes a drum 11 and a pair of drums having the same outer diameter as the drum 11 and coaxially connected to both open ends of the drum 11. Spacers 12 and 13
and a coating liquid storage container 14 disposed in contact with the outer peripheral surface of the drum 11. The coating liquid storage container 14 contains a quick-drying coating liquid 141 and a coating member 142 such as a blade.

The drum 11 may have a cylindrical shape, and its length
There are no particular restrictions on the diameter, thickness, material, etc.
For example, drums used in electrophotographic photoreceptors are made of aluminum. The spacers 12 and 13 each have, for example, a cylindrical shape and have a connecting portion 121 and an end surface 122 so that at least one end can be connected to the opening 111 of the drum 11. Coating liquid storage container 1
As the coating liquid 141 contained in the photoreceptor 4, for example, a photosensitive liquid for an electrophotographic photoreceptor is used. This photosensitive liquid is composed of a photoconductive pigment, a resin, an organic solvent, etc., and has quick drying properties. As the application member 142, a blade made of synthetic resin or rubber that is not melted by the coating liquid 141 and has elasticity is appropriately employed.

The coating device 1 further includes a spacer 12.
A spacer removing means 2 is provided for separating the spacer from the drum 11. Spacer removal means 2
For example, a drum support member 21 and a chuck 22 such as a robot hand are arranged at least in a portion near the connecting portion of the drum 11 and the spacer 12.
It consists of The support member 21 is a so-called contact member, and may be any member having the function of maintaining the drum 11 in that position during the separation operation of the spacer 12. Therefore, its shape, material, etc. are not particularly limited. For example, a rod-shaped body made of synthetic resin is used as appropriate. This support member 21 is moved to the drum 11 by a drive means (not shown) after the coating process is completed.
It comes into contact near the connecting part of. In check 22,
A hand portion 221 is provided so as to be openable, and the tip of the hand portion 221 is made of an elastic resin material or the like. The chuck 22 is located at an eccentric position within the spacer 12. Therefore, when the hand portion 221 is opened, a pressing force is applied to the spacer 12 at an appropriate angle with respect to the axial direction.

The above coating device 1 and spacer removal means 2
works like this: First, the spacer 13 is placed on the mounting table 15, which is driven in the vertical direction by a drive source such as a motor, using, for example, a robot hand.
Place. Furthermore, at the upper end of the spacer 13,
The drum 11 to which the coating liquid 141 is to be applied is also connected using a robot hand. On the other hand, above the mounting table 15 is a coating liquid storage container 1.
4 is on standby while holding the spacer 12. This coating liquid storage container 14 is supported and fixed to a fixed part such as a frame of the apparatus 1. Next, the mounting table 15 on which the drum 11 is mounted is raised via the spacer 13 and connected to the standby spacer 12 above. And spacer 12
The mounting table 15 is raised so as to raise the spacer 13 to the position where it was waiting. During this time, the outer peripheral surface of the drum 11 is coated with the coating liquid container 14. Since the coating liquid 141 has quick drying properties, the coating liquid 141 applied to the outer peripheral surface of the drum dries immediately. The coating liquid 141 also dries at the joints between the drum 11 and the spacers 12 and 13, and
1 and spacers 12 and 13.

Next, while the drum support member 21 is brought into contact with a predetermined portion of the drum 11 near the connecting portion, the chuck 22 is
is lowered from above the spacer 12 to an eccentric position within the spacer 12 near the support member 21. Next, by opening the hand portion 221, the spacer 12 is pressed in a direction corresponding to the direction in which the support member 21 supports it. Along with that, spacer 1
The bond between the drum 11 and the support member 21 is gradually released from the side corresponding to the support member 21. Then,
The spacer 12 is easily separated from the drum 11 by pulling the chuck 22 upward while bringing the tip of the hand portion 221 into contact with the inner wall surface of the spacer 12.

Next, the drum 11 is separated from the spacer 13 by the robot hand, and the mounting table 15 is lowered. At this time, since the spacer 13 is held in that position by the coating means 142 in the coating liquid storage container 14, separation is performed smoothly and easily. By repeating the above steps,
Continuous coating of the drum 11 is performed.

The present invention provides a chuck 22 as shown in FIG.
Instead of arranging the spacer 1 at an eccentric position within the spacer 12, the spacer pressing member 23
The adhesion between the spacer 12 and the drum 11 can also be broken by pressing the upper end of the spacer 2 in a direction corresponding to the direction of contact with the drum 11. The shape and material of the pressing member 23 are not particularly limited, and for example, a rod-shaped body made of synthetic resin driven by a solenoid may be used as appropriate. The spacer 12 then
Chuck 2 located at the center within the spacer 12
2 allows for smooth and easy separation from the drum 11.

(Effects of the Invention) As described above, the present invention allows the spacer and the drum to be smoothly and easily connected by holding the drum in a predetermined position using the drum support member and pulling up the spacer at an appropriate angle with respect to the axial direction. Separated. Thereby, continuous coating work can be performed smoothly. Furthermore, since the present invention has a simple configuration, separation operations can be performed quickly and easily.

[Brief explanation of drawings]

FIG. 1a is a front sectional view of a main part showing an embodiment of a coating device and a detaching means embodying the separation method of the present invention, and FIG. 1b is a partial sectional view showing a state in which a spacer is detached from a drum. FIG. 2 is a front sectional view of a main part showing another embodiment, and FIG. 3 is a sectional view of a main part showing an example of a conventional coating device. 1... Coating device, 2... Spacer removal means,
11...Drum, 12,13...Spacer, 1
4...Coating liquid storage container, 21...Drum support member, 22...Chuck, 23...Spacer pressing member.

Claims (1)

[Scope of Claims] 1. A cylindrical drum whose outer peripheral surface is to be coated with a coating liquid, a pair of spacers having the same outer diameter as the cylindrical drum and coaxially connected to both open ends of the cylindrical drum, and the cylindrical drum. A drum coating device having a coating liquid storage container disposed in contact with the outer circumferential surface of the drum, the coating liquid is applied to the outer circumferential surface of the cylindrical drum while moving the cylindrical drum in the axial direction, and after drying, at least one spacer is attached to the spacer. In the method of separating the drum from the cylindrical drum by a detaching means, the spacer is held at an appropriate angle with respect to the axial direction while supporting at least a part of the drum near the connection part with the spacer by the spacer detaching means. Drum separation method comprising lifting the drum. 2. The spacer removing means includes a drum support member disposed at least in a portion of the drum near the connecting portion with the spacer, and a chuck that pulls up the spacer at an eccentric position within the spacer. The separation method according to item 1. 3. The spacer removing means presses the spacer from a direction corresponding to a direction in which the drum is supported by the drum support member disposed at least in a portion of the drum near the connecting portion with the spacer. 2. The separation method according to claim 1, comprising a spacer pressing member and a chuck for pulling up the spacer.