JPS6030248Y2 - Goods conveyance roll - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an article conveying roll whose outer peripheral surface is coated with a wear-resistant and highly elastic material, such as urethane rubber.

In a roller conveyor for conveying articles, in which rollers are arranged in parallel in the horizontal direction and articles are conveyed over them by the rotation of each roller, in order to prevent the conveyed articles from being scratched, use abrasion-resistant material such as urethane rubber. The roll is made of an elastic material, and a metal core is inserted into the urethane rubber roll to maintain strength.

Generally, urethane rubber has difficulty adhering to metal, so the urethane rubber layer is made thicker, and the elasticity of urethane rubber is used to integrate the rubber layer and the core metal.

By the way, urethane rubber is a petroleum product, and in recent years there has been a trend to reduce its usage as much as possible, especially from the viewpoint of resource conservation and cost.

If the urethane rubber layer is made thinner, the adhesive force with the core metal will be weak and there is a risk that it will peel off during use.

Also, if the core metal gets hot, the urethane rubber will deteriorate due to the heat.

The above-mentioned disadvantages are common to this type of elastic body, and eliminating them is industrially significant.

As an embodiment of the present invention, in view of the above-mentioned drawbacks of an article conveying roll whose outer peripheral surface is coated with urethane rubber, the present invention has been improved. In addition, a metal core is not necessary, and even if a metal core is required, a metal core can be used via a thin layer of urethane rubber paper tube. The purpose is to provide an article conveying roll that can be coated firmly with gold and that does not cause the urethane rubber to deteriorate even under usage conditions where the core metal is at high temperatures.The configuration of this invention will be explained below with reference to drawings. Then, it is as follows.

FIGS. 1 and 2 show a roller conveyor comprising an article conveying roll according to the present invention, where A is the article conveying roll according to the present invention, and B is an article conveyed by the roller conveyor.

3 and 4 show a first embodiment of the article conveyance roll A, in which paper or asbestos paper is cut into ribbons, and this ribbon-shaped base paper 1a is spirally wound and laminated with an inorganic adhesive. Then, paper tube 1 is manufactured.

When manufacturing this paper tube 1, it is wound so that a gap 2 is formed between the ribbon-shaped base papers 1a and 1a adjacent in the width direction.

A coating layer of a wear-resistant and highly elastic material, such as urethane rubber 3, is formed on the outer peripheral surface of the paper tube 1.

To form this urethane rubber layer, for example, a cylindrical split mold is used, the inner diameter of the split mold is made larger than the outer diameter of the paper tube, the split mold is set upright on a jig, and the paper is placed in the center of the split mold. A tube is erected, and fluid urethane rubber is supplied and filled into the annular gap formed between the paper tube and the split mold.

At this time, a part of the urethane rubber, which is still in a softened state and has been supplied into the gap, flows into the gap 2 on the outer peripheral surface of the paper tube.
It hardens in this state.

A portion of the urethane rubber that is bitten into the gap in the cured state of the urethane rubber ensures a strong bond between the urethane rubber layer and the paper tube.

The thickness of the urethane rubber layer can be easily adjusted by changing the inner diameter of the split mold.

FIGS. 5 and 6 show the second part of the article conveying roll according to the present invention.
In this embodiment, this article conveying roll A' has a metal core 4.
It is manufactured by fitting the article conveying roll A of the first embodiment onto a core bar 4.

The paper tube 1 and the core metal 4 are firmly connected with adhesive.

The article conveyance roll A' according to the second embodiment has a ribbon-shaped base paper 1a spirally wound and laminated directly on the upper peripheral surface of the core bar 4 using an inorganic adhesive in the same manner as in the first embodiment. The outer peripheral surface may be coated with urethane rubber 3.

In the case of the article conveyance roll A' according to the second embodiment,
Under usage conditions where the core metal 4 is at a high temperature, the paper tube 1 is made of asbestos paper, so that the paper tube 1 forms a heat insulating layer.
Prevents deterioration of the urethane rubber layer due to high heat.

As explained above, the present invention uses an inorganic adhesive to create gaps between each winding of paper or asbestos paper cut into ribbons on the rollers of a roller conveyor for transporting goods, which are in contact with the goods. A paper tube is formed by winding and laminating the paper tube, and the outer circumferential surface of the paper tube is coated with a wear-resistant and highly elastic material, and the gap is filled with the material. The amount of highly elastic substances such as urethane rubber used can be significantly reduced.

Further, the metal core metal can be firmly covered with the urethane rubber layer via the paper tube.

Furthermore, by forming a gap on the outer circumferential surface of the paper tube, the urethane rubber layer can be firmly bonded to the outer circumferential surface of the paper tube.

Furthermore, by using an asbestos paper tube, the life of the article conveying roll can be extended without degrading the urethane rubber layer even when the core metal is exposed to high temperatures.

[Brief explanation of the drawing]

FIG. 1 is a side view of the roller conveyor, and FIG. 2 is a plan view thereof. Figures 3 and 4 show the first part of the article conveying roll according to the present invention.
In this embodiment, FIG. 3 is a longitudinal side view, and FIG. 4 is a longitudinal front view. 5 and 6 show a second embodiment of the present invention, in which FIG. 5 is a vertical side view and FIG. 6 is a vertical front view. DESCRIPTION OF SYMBOLS 1... Goods conveyance roll, 1a... Ribbon-shaped base paper, 2... Clearance, 3... Urethane rubber layer, 4... Core Money.

Claims (1)

[Scope of utility model registration request] Paper or asbestos paper cut into ribbons is wound and laminated in a spiral shape using an inorganic adhesive to create gaps between each winding on the rollers of the roller conveyor that are in contact with the goods. An article conveyance roll having the shape of a paper tube, the outer peripheral surface of the paper tube being coated with a wear-resistant and highly elastic material, and the gap being filled with the material.