JPH03208535A - Pallet for transport of cylindrical member - Google Patents

Abstract

PURPOSE:To transport cylinders in different dias. in approx. plumb attitude without risk of tumbling by furnishing each pallet body in its upper part with a cylindrically formed supporting member having a flange, which can be fitted in the bottom part of an applicable cylinder of specified inside diameter. CONSTITUTION:A circular opening 1 is provided in the body 10 of each pallet, and to the peripheral edge of this opening 11 the bottom surface of each supporting member 20 is put in the contact concentrically with the opening and secured by screw. Above the flange part 21 of each supporting member 20, a cylindrically formed lower fitting part 23 is provided through a lower locational part 22 having a dia. a little smaller than the flange part 21, while above this lower fitting part 23 an upper cylindrically formed fitting part 25 having a smaller dia. than the lower fitting part 23 is provided through a flange- shaped upper locational part 24. These lower and upper locational parts 22, 24 are made in the same size the shape, and the upper peripheral surface of each is tapered as reducing dia. toward the up side. A drum 31 having a specified inside dia. is fitted in each of the lower and upper locational parts 22, 24.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is directed to, for example, applying a coating liquid containing a photosensitive substance to the outer circumferential surface of a drum such as an aluminum tube to form a photosensitive layer on the outer circumferential surface. The present invention relates to a pallet for transporting a cylindrical body used to transport a photoreceptor drum for an image forming apparatus.

(Prior Art) A photoreceptor drum for electrophotography is manufactured by cleaning the outer circumferential surface of the drum, which is made of conductive material such as an aluminum tube.
Applying a coating liquid containing a photosensitive substance to the outer peripheral surface,
Thereafter, the coating liquid is heated and dried to form a coating film that will become a photosensitive layer on the outer peripheral surface of the drum. In this way, the drum is sequentially conveyed to the cleaning process, coating process, and drying process.

When mass-producing photoreceptor drums industrially, it is necessary to process multiple drums at the same time in each process to improve work efficiency. A large number of drums are transported at once by the resulting transport pallet. Each drum is held on the conveying pallet in a substantially vertical state in which the outer circumferential surfaces to be processed do not contact each other, and in a manner that the drums do not fall over.

Conventional drum conveyance pallets usually have a structure in which a large number of protrusions are provided on a flat plate, and the lower end of the drum is fitted into each protrusion.

(Problems to be Solved by the Invention) In a conventional drum conveying pallet, the lower end of one drum having a predetermined inner diameter is fitted into each protrusion provided on a flat plate, and the lower end of a drum is vertically aligned. Because it is only retained,
If the diameter of the drum to be transported is changed, another pallet must be used that can hold the drum vertically. If the diameter of the conveyed drum is frequently changed, replacing the pallets requires time and effort, and moreover, a storage space is required for unused pallets.

When manufacturing a photosensitive drum, the drum is cleaned before being coated with a coating liquid containing a photosensitive substance.

When cleaning drums, a pallet that holds a plurality of drums vertically is immersed in a cleaning liquid while holding each drum vertically. At this time, there is a possibility that the pallet, which has been pulled up from the cleaning liquid together with each drum, may be in a state where the cleaning liquid has entered the gap between the pallet and the lower end surface of each drum. When applying a coating liquid to the cleaned outer peripheral surface of the drum, it is usually carried out by a dipping method in which the drum is immersed in the coating liquid. In such a dipping method, if the cleaning liquid adheres to the lower end surface of the drum, the cleaning liquid will contaminate the coating liquid, and there is a possibility that the coating liquid cannot be applied to the outer peripheral surface of the drum to a uniform thickness. In order to avoid such a fear, it is necessary to completely dry the cleaning liquid adhering to the lower end surface of the drum, and since it takes a long time to dry, the manufacturing efficiency of the photoreceptor drum decreases.

Further, when applying the coating liquid to the outer circumferential surface of each drum, it is usually carried out in a clean room to prevent foreign matter such as dust from adhering to the coating liquid applied to the outer circumferential surface of the drum. In a clean room, cleaned air flows downward from above, so it is preferable to allow the clean air to flow through a drum held on a pallet.

However, as described above, if foreign matter such as dust adheres to the gap between the pallet and the lower end surface of the drum where the cleaning liquid enters, the foreign matter cannot be removed.

The present invention solves the above-mentioned conventional problems, and its purpose is to create a cylindrical body with different diameters even when the diameters of cylindrical bodies such as drums used for manufacturing photosensitive drums are different. To provide a pallet for transporting a cylindrical body, which can transport the body in a substantially vertical state without tipping over. Another object of the present invention is to provide a pallet for transporting cylindrical objects, in which there is no risk of the liquid remaining on the lower end surface of the cylindrical objects even when the cylindrical objects are held in a substantially vertical state and immersed in liquid. It's about doing.

(Means for Solving the Problems) The pallet for transporting cylindrical objects of the present invention is a pallet for transporting cylindrical objects that holds and transports cylindrical objects in a substantially lead shape, and has a flat pallet main body. and a cylindrical shape having a flange-like part disposed on the pallet main body and capable of fitting into the lower end of the cylindrical body having a predetermined inner diameter, the cylindrical body being disposed on the pallet main body, and a support member on which a cylindrical body having an inner diameter smaller than the inner diameter of the support member is placed, thereby defeating the above purpose.

Further, the pallet for conveying a cylindrical body of the present invention is a pallet for conveying a cylindrical body while holding the cylindrical body substantially vertically,
A cylindrical pallet having a flat plate-like main body and a flange-like part disposed on the pallet main body and on which a cylindrical body having a predetermined inner diameter is placed, the flange-like part having a bottom surface. and a support member provided with an inclined groove, thereby achieving the above object.

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

The pallet for transporting cylindrical bodies of the present invention can be used, for example, in a process of holding a large number of aluminum drums and cleaning these drums in a photosensitive drum production line.
It is used to sequentially convey the step of applying a coating liquid containing a photosensitive material and the step of heating and drying the coating liquid on the outer peripheral surface of the drum.

As shown in FIGS. 1 and 2, the conveyance pallet includes a flat pallet main body 10 and a pallet main body 1.
It has a large number of support members 20 arranged at 0.

The pallet main body 1O is formed into a flat plate shape of, for example, iron treated with chromate agate or Unichrome, or a material with excellent chemical resistance such as stainless steel. Two rows of four circular openings 1] (see FIG. 2) are provided in the main body IO at equal intervals in the width and length directions, for example. On the peripheral edge of each opening 11, the lower end surface of a cylindrical support member 20 is brought into contact concentrically with each opening 11, and each support member 20 is screwed. A ventilation hole l2 having a smaller diameter than each opening 11 is provided between each opening 1l.

Each support member 20 has a cylindrical shape with a constant inner diameter,
The lower end portion is a flange portion 21 placed on the peripheral edge of the opening 11 of the pallet main body portion 10. Above the seven flange portions 2l, a cylindrical lower fitting portion is provided via a flanged lower positioning portion 22 which is slightly smaller in diameter than the seven flange portions 21 and is concentric. 23 are arranged in series. Then, above the lower fitting part 23, an upper fitting part 25 having a cylindrical shape smaller in diameter than the lower fitting part 23 is connected to the lower fitting part 23 via a collar-like upper positioning part 24. It is provided concentrically with the section 23.

The lower positioning part 22 and the upper positioning part 24 have the same size and shape, and each has a tapered upper outer circumferential surface that gradually decreases in diameter toward the upper side. A predetermined drum 3l having a predetermined inner diameter is fitted into the lower positioning portion 22 and the upper positioning portion 24, respectively.

The upper outer circumferential surface of the upper fitting portion 25 is a tapered surface whose diameter gradually decreases toward the upper side. The upper fitting part 25
In this case, a drum 32 having a diameter smaller than that of the drum fitted into each of the positioning parts 22 and 24 is fitted, and the inner circumferential surface of the drum 32 is sized to almost contact the outer circumferential surface of the upper fitting part 25. There is. Therefore, the lower end surface of the drum 32 is placed on the upper surface of the upper positioning section 24.

The peripheral wall of the upper fitting part 25 has four through holes 2Sa.
They are opened at equal intervals in the circumferential direction. Each through hole 25
a have the same structure. Each through hole 25
The lower part of a is located inside the upper positioning part 24, and is in an inclined state that gradually becomes lower toward the outside. Therefore, on the upper surface of the upper positioning member 24,
Four grooves are formed in the lower part of each through hole 25a at equal intervals in the circumferential direction, and the bottom surface of each groove is sloped so that it gradually decreases toward the outside. . The lower outer peripheral edge of each through hole 25a is chamfered.

The peripheral wall of the lower fitting part 23 also has four through holes 23a.
They are opened at equal intervals in the circumferential direction. Each through hole 23
a have the same structure. Each through hole 23
The lower part of a is the inner part of the lower positioning part 22 and the flange part 2.
1, and is in an inclined state that gradually becomes lower toward the outside.

Therefore, four grooves are formed on the upper surface of the 7-flange portion 2l at equal intervals in the circumferential direction by the lower part of each through hole 23a, and the bottom surface of each groove increases as it moves outward. The slope is gradually decreasing. The lower outer circumferential edge of each through hole 23a is chamfered.

Each support member 20 is made of iron subjected to chromate plating or Unichrome treatment, or stainless steel, similarly to the pallet main body portion IO.

The conveying pallet of the present invention having such a configuration is used when conveying drums made of two types of aluminum tubes with different diameters. For example, the large diameter drum 31 is
Its axis is substantially vertical, and its lower end is fitted into each support member 20 . The lower end surface of each drum 3l is
The support member 20 is placed on the upper surface of the 7-lunge portion 2l provided at the lower end thereof. At this time, since the outer circumferential edge of the lower part of the through hole 23g in the lower fitting part 23 of each support member 20, which is located within the lower positioning part 22, is chamfered, the lower positioning part There is no risk of damage to the inner circumferential surface of the drum 31 fitted to the drum 22. The outer peripheral surface of the upper positioning part 23 and the lower positioning part 2
The outer circumferential surface of the drum 2 is in substantially contact with the inner circumferential surface of each drum 3l, and each drum 3l is positioned and held in a substantially vertical state.

The lower end surface of each drum 3l is in contact with the upper surface portion of the flange portion 2l excluding the groove formed by the lower part of each through hole 23a of the lower fitting portion 23. On the lower end surface, each concave groove part is the flange part 2.
No contact with 1.

With the lower end of the drum 31 fitted to each support member 20, the pallet of the present invention is transported sequentially to, for example, a cleaning process, a coating process, and a drying process. A large number of drums 3 held in the drum 3 are washed together with pallets using an organic solvent such as dichloromethane. In this case, the cleaning liquid adhering to the outer peripheral surface of the drum 3l is removed from the flange portion 2l of the support member 20.
The water falls into a groove whose bottom surface is inclined, which is formed by the lower part of each through hole 23a, and the water flows outward along the inclined bottom surface of this groove. As a result, there is no possibility that the cleaning liquid will remain at the interface between the lower end surface of the drum 31 and the upper surface of the flange portion 211).

Next, each drum 3l is transported to a coating step in which a coating liquid containing a photosensitive substance is coated on the outer peripheral surface. In this coating process, since the cleaning liquid is not attached to the lower end of the drum 3l, the coating liquid applied to the lower part of the outer peripheral surface of the drum 3o is not adversely affected by the cleaning liquid and has a uniform thickness. A coating liquid is applied.

The drum 31 coated with the coating liquid is transported to a drying process together with the pallet. In the drying process, hot air of about 150° C. is blown down from above the pallet in a laminar flow. At this time, each drum 3 is attached to the pallet main body 10.
Since the ventilation holes 12 are formed between the supporting members 20 holding the drums 1, the hot air flowing along the outer peripheral surface of each drum 3l passes from each ventilation hole 12 to the lower part of the pallet body part '10. In addition, the hot air that has entered the drum 30, which is held approximately vertically, passes through the support member 2o and the opening 11 of the pallet main body 1G and reaches the lower part1.In this way, the hot air flows from above the pallet into a laminar flow. The hot air blown down flows as a laminar flow along the inner circumferential surface and outer circumferential surface of the drum 3l, and there is no risk of turbulent flow even in the lower part of the drum 3l. Foreign matter such as dust adhering to the lower end surface of the drum 31 is removed by the hot air being blown from the recess formed by the lower part of each through hole 23a.

In contrast to such a large-diameter drum 31, when a drum 32 having a smaller diameter than the drum 3l is transported on the pallet, the lower end of each small-diameter drum 32 is fitted into the support member 20. . Each drum 32 is fitted into the upper fitting part 25 and its lower end is placed on the upper surface of the upper positioning part 24 . The inner circumferential surface of the lower end of each drum 32 is in substantially contact with the outer circumferential surface of the upper fitting portion 25, and is maintained in a substantially vertical state. The lower end surface of each drum 32 has an upper positioning H2
4, the upper fitting portion 25 is in contact with the upper surface portion excluding the groove formed by the lower part of each through hole 25a, and therefore, the lower end surface of each drum 31 is in contact with the portion of the groove formed by the flange. It is not in contact with part 2l.

In this state, the pallet of the present invention is sequentially conveyed to a cleaning process, a coating process, and a drying process, and in each process, each drum 32 is subjected to the same work as in the case of the large-diameter drum 3l described above. will be held. The effects of the pallet in this case are the same as in the case of conveying the large-diameter drum described above.

(Effects of the Invention) Since the pallet for transporting cylindrical objects of the present invention can hold cylindrical objects with different inner diameters using the cylindrical support member, the type of cylindrical objects to be transported can be changed. Even if
There is no need to replace pallets, and setup changes can be made in a short time. Since the flange-shaped part on which the cylindrical body is placed is provided with an inclined concave groove, even if the pallet is immersed in the limb while holding the cylindrical body, the liquid will not flow into the concave groove. It flows reliably through the groove and there is no risk of it getting stuck on the lower end surface of the cylindrical body being held. Even when the airflow passes through the cylindrical body, the airflow passes through the groove, so that dust and the like attached to the lower end of the cylindrical body can be reliably removed.

4. No! 1 FIG. 1 is a partially cutaway side view showing an example of the pallet for transporting cylindrical objects of the present invention, and FIG. 2 is a plan view thereof.

10...Pallet main body, 1l...Opening, 12.
...Vent hole, 20...Supporting member, 2l...Flange part, 22...Lower side positioning part, 23...Lower side fitting part, 23a...Through hole, 24...Upper side Positioning part, 2
5... Upper fitting part, 25a... Through hole, 31. 3
2...Drums.

that's all

Claims (1)

[Scope of Claims] 1. A pallet for transporting a cylindrical body that holds and transports a cylindrical body substantially vertically, comprising: a flat pallet main body; and a pallet disposed on the pallet main body; A cylindrical body having a flange-like part that can fit into the lower end of a cylindrical body having a predetermined inner diameter, and a cylindrical body having an inner diameter smaller than the inner diameter of the cylindrical body is placed on the flange-like part. A pallet for transporting a cylindrical object, comprising: a support member for carrying a cylindrical object; 2. A pallet for transporting cylindrical objects that holds and transports cylindrical objects approximately vertically, which includes a flat pallet main body and a cylindrical object with a predetermined inner diameter, which is disposed on the pallet main body. A pallet for transporting a cylindrical object, comprising: a supporting member having a cylindrical shape having a flange-like part on which the cylindrical body is placed, and in which the flange-like part is provided with a groove with an inclined bottom surface.