JPS61120662A - Drum separation method - Google Patents

Abstract

PURPOSE:To facilitate the separation of a drum support member and a drum in an adhesive coating part and to smooth continuous painting work, by drawing up a spacer at a proper angle with respect to an axial direction while holding the drum support member and the drum at a predetermined position. CONSTITUTION:Immediately after the coating of a quick drying coating solution 141, the coating solution 141 is dried not only at the outer peripheral surface of a drum 11 but also at the connection part of the drum 11 and a spacer 12 to form an adhered part. Next, a chuck 22 is fallen from the part above the spacer 12 to the eccentric position near the support member 21 in the spacer 12 while the drum support member 21 is contacted with the predetermined area i the vicinity of the connection part of the drum 11. Then, the spacer 12 is pressed to the direction corresponding to the support direction of the support member 12 by opening hand parts 221. As a result, the adhesion of the connection part is gradually released from the side corresponding to the support member 21.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for separating drums, and more particularly, to a method for easily separating a drum coated with a quick-drying coating liquid from a mounting member after drying.

(Prior Art) As shown in FIG.
A pair of spacers 102 and 10 having the same outer diameter as
3 coaxially connected to both open ends of the drum 101, and a coating liquid storage container 104 provided in contact with the outer peripheral surface of the drum.
The coating liquid 105 is applied to the outer peripheral surface of the drum by moving the drum 101 relative to the drum. However, in this device 100, when a quick-drying coating liquid 105 is used, the coating liquid 105 that has entered the minute gap 106 between the drum 101 and the spacers 102 and 103 dries quickly, and this is due to the adhesive function. As a result, the drum 101 and the spacers 102 and 103 may adhere to each other. 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, the spacer 102 is attached to the drum 101.
When separated from the spacer 1, the lightweight drum 101
It will be lifted up together with 02. 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,
The purpose is to provide a method for separating the drum and spacer by pulling up the spacer at an appropriate inclination in the axial direction. 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 has a coating liquid storage container disposed in contact with the outer circumferential surface of the cylindrical drum, and the coating liquid is applied to the outer circumferential surface of the cylindrical drum while moving the cylindrical drum in the axial direction. A method for separating a spacer from the cylindrical drum by a spacer detaching means, the spacer being separated from the cylindrical drum by the spacer detaching means, while supporting at least a part of the drum near the connecting portion with the spacer. The above object is thereby achieved.

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

As shown in FIG. 1 (al) and FIG. 1 (b), a drum coating device 1 includes a drum 11, which has the same outer diameter as the drum 11, and is coaxially connected to both open ends of the drum 11. a pair of spacers 12 and 13, and a coating liquid storage container 14 disposed in contact with the outer peripheral surface of the drum 11.Inside the coating liquid storage container 14, a quick-drying coating liquid 141 and an application member 1 such as a blade are stored.
42 are accommodated.

The drum 11 may have a cylindrical shape, and its length and diameter are determined.

There are no particular restrictions on the thickness, material, etc. For example, in the case of a drum used for an electrophotographic photoreceptor.

Made of aluminum is used. Each of the spacers 12 and 13 has a cylindrical shape, for example, and has 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.

As the coating liquid 141 contained in the coating liquid storage container 14, for example, a photosensitive liquid for an electrophotographic photoreceptor is used. This photosensitive liquid.

It is made of photoconductive pigment, resin, and organic solvent, and has quick drying properties. As the application member 142, the coating liquid 1
A blade made of synthetic resin or rubber that is not melted by the blade 41 and has elasticity is appropriately employed.

The coating device 1 is further equipped with a spacer removing means 2 for separating the spacer 12 from the drum 11. The spacer removal means 2 is.

For example, it is composed of a drum support member 21 disposed at least in a portion of the drum 11 near the connecting portion with the spacer 12, and a chuck 22 such as a robot hand. 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 may be used as appropriate. After the coating process is completed, the support member 21 is brought into contact with the vicinity of the connecting portion of the drum 11 by a drive means (not shown).

The chuck 22 is provided with a hand portion 221 that can be opened, 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, hand part 2
When the legs 21 are opened, a pressing force is applied to the spacer 12 at an appropriate angle with respect to the axial direction.

The coating device 1 and spacer removal means 2 are as follows.

It has two functions as follows. First, the spacer 13 is placed on the mounting table 15, which is driven vertically by a drive source such as a motor, using, for example, a robot hand.

A coating liquid 14 is further added to the upper end of the spacer 13.
Similarly, the drums 11 to which 1 is to be applied are connected using a robot hand. On the other hand, above the mounting table 15, the coating liquid storage container 14 is waiting with the spacer 12 held therein. This coating liquid storage container 14 is
It is supported and fixed to a fixed part such as a frame. Next, the mounting table 15 on which the drum 11 is mounted via the spacer 13
is raised and connected to the waiting spacer 12 above. Then, the mounting table 15 is raised so as to raise the spacer 13 to the position where the spacer 12 was waiting. During this time, the drum 11 is moved to the coating liquid storage container 14.
The outer circumferential surface is coated. Coating liquid 141
Since the coating liquid 141 is quick-drying, the coating liquid 141 applied to the outer peripheral surface of the drum dries immediately. The coating liquid 141 also dries at the connecting portions between the drum 11 and the spacers 12 and 13, forming adhesive portions between the drum 11 and the spacers 12 and 13.

Next, the chuck 22 is attached to the spacer 1 while the drum support member 21 is brought into contact with a predetermined portion of the drum 11 near the connecting portion.
2 to an eccentric position near the support member 21 within the spacer 12. 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.

As time goes on, the bond between the spacer 12 and the drum 11 is gradually released from the side corresponding to the support member 21. Next, 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 on the drum 11 is performed.

Instead of placing the chuck 22 in an eccentric position within the spacer 12, as shown in FIG.

Even when the spacer pressing member 23 presses the upper end of the spacer 12 in a direction corresponding to the direction of contact with the drum 11, the bond between the spacer 12 and the drum 11 can be broken. The shape and material of the pressing member 23 are not particularly limited; for example, a rod-shaped body made of synthetic resin driven by a solenoid may be used as appropriate.

The spacer 12 is then smoothly and easily separated from the drum 11 by a chuck 22 centrally located within the spacer 12.

(Effects of the Invention) As described above, the present invention is achieved by holding the drum in a predetermined position by the drum support member and pulling up the spacer at an appropriate angle with respect to the axial direction.

The spacer and drum are separated smoothly and easily. Thereby, continuous coating work can be performed smoothly. Furthermore, since the present invention has a simple configuration, one separation operation can be performed quickly and easily.

[Brief explanation of the drawing]

FIG. 1(a) is a front cross-sectional view of essential parts showing an embodiment of a coating device and a detaching means embodying the separation method of the present invention; FIG. 2 is a front sectional view of a main part showing another embodiment, and FIG. 3 is a front view of a main part showing an example of a conventional coating device. 1... Coating device 22... Spacer removal release means, 11
...Drum, 12.13...Spacer, 14.
...Coating liquid storage container, 21...Drum support member, 22...Chuck. 23... Spacer pressing member. that's all

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; A drum coating device having a coating liquid storage container disposed in contact with the outer peripheral surface of the cylindrical drum applies the coating liquid to the outer peripheral surface of the cylindrical drum while moving the cylindrical drum in the axial direction, and after drying, at least one spacer is removed. In the method of separating the drum from the cylindrical drum using a spacer removal 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 connecting portion with the spacer. Drum separation method including lifting. 2. A claim in which the spacer removing means includes a drum support member disposed at least in a part 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 paragraph 1. 3. The spacer detaching means presses the spacer from a direction corresponding to a direction in which the drum is supported by a drum support member disposed at least in a part of the drum in the vicinity of the connecting portion with the spacer. 2. The separation method according to claim 1, comprising: a spacer pressing member for lifting the spacer; and a chuck for lifting the spacer.