JPH05229627A - Roller with resin lining - Google Patents

Abstract

PURPOSE:To prevent a synthetic resin cylindrical body from generating a rotational dislocation in a circumferential direction and falling off in an axial direction, relative to a metal core material. CONSTITUTION:Projections and recesses are physically formed on the covered surface of a metal core material 2 of a rein lined roller 1 comprising a metal core material 2 covered with a synthetic resin cylindrical body 3, or at least one or more segments of short metal pieces are welded to the surface of the material 2. In addition, a synthetic resin cylindrical body 3 having an inner diameter slightly less than the outer diameter of the material 2 is mechanically coupled to the core material 2, thereby providing a resin lined roller.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a resin lining roller in which the outer circumference of a metal cylindrical body or a metal rod-shaped core is covered with a cylindrical body made of synthetic resin.

[0002]

2. Description of the Related Art Conveying means using rollers are required to protect the objects to be conveyed, to prevent noise during conveyance, to have excellent chemical resistance, waterproofness, and abrasion resistance.
Due to the ease of roller replacement, resin-lined rollers, in which various synthetic resins are coated and coated on a metallic core material, have been widely used.

In general, these resin lining rollers heat a cylindrical body made of synthetic resin, expand its inner diameter larger than the outer diameter of the core material, and fit it into the core material to cool it. It is manufactured by so-called shrink fitting that solidifies, and various techniques have been conventionally known for the diameter of the synthetic resin cylindrical body, the heating means, and the fitting means. When the synthetic resin tubular body is fitted to the core material, the synthetic resin tubular body is fixed to the metal core material, and the synthetic resin tubular body is pulled out in the axial direction and the circumferential direction. Various researches and proposals have been made on how to prevent rotational deviation.

For example, as an example of the above, Japanese Utility Model Laid-Open No. 62-62.
Nos. 012 and 62-167926 can be cited. As shown in FIG. 3, the resin lining roller 30 disclosed in Japanese Utility Model Laid-Open No. 62-62012 has a plurality of resin linings on the outer periphery of a metal cylindrical body or a rod-shaped body 31 as a core material thereof. Member 33,3
3, 33 are arranged with a gap 34, and stopper members 35, 35 are provided on the outer peripheral portions of both ends of the metallic cylindrical body 31 serving as the core material.
35 is provided, and the resin lining member 33 at the center is fixed to the metal cylindrical body 31 serving as a core member by a knock pin 36. The resin lining members 33, 33 on both sides are
The metal tubular body 3 which is the core material by the stoppers 35, 35.
The resin lining member 33 at the center is fixed to the core member by a knock pin 36.

In Japanese Utility Model Laid-Open No. 62-167926, as shown in FIG. 4, at least one strip ring member 42 is fitted on the outer peripheral surface of the roller core material 41 of the resin lining roller 40. At least one key member 43 is fixed to the outer peripheral surface of the roller core body 41 so as to be positioned in the axial direction, and the key member 43 is fixed to the roller core body 41 by the stop ring member 42 and the key member 43. Resin lining member 44 to be mounted
Is fixed.

The stop ring member and the key member described above are fixed to the core body in advance by welding or the like, and then the synthetic resin cylindrical body is heated and expanded and fitted into the core body, and then the synthetic resin cylindrical body. Is fixed to the core by cooling and shrinking, and the stop ring member and the key member bite into the inner wall of the synthetic resin cylindrical body to prevent the synthetic resin cylindrical body from coming off and rotating with respect to the core. is there.

[0007]

In the above-mentioned example, it is necessary to perform a working operation of fixing the stop ring member and the like to the core body in advance in a considerable amount of time and cost.
Since the shrink fitting method is used to fit the synthetic resin cylindrical body to the core, a large tightening margin cannot be secured, and the synthetic resin cylindrical body has a small tightening force on the core and is synthesized with the core. Practical problems remain, such as the axial displacement of the resin cylindrical body and the rotational deviation in the circumferential direction.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a resin-lined roller in which a synthetic resin tubular body can completely prevent axial displacement of a metal core material as well as circumferential rotational deviation and idling. It is a thing.

[0009]

In order to achieve the above-mentioned object, a resin lining roller according to the present invention is formed by physically forming a plurality of irregularities on the surface of a metal core material, or by forming a metal short piece. Weld at least one segment,
It is characterized in that a synthetic resin cylindrical body having an inner diameter slightly smaller than the outer diameter of the metal core material is fitted into the metal core material.

[0010]

The resin-lined roller according to the present invention causes physical unevenness on the surface of the metal core material by, for example, working with air chisel or mechanical means, or on the surface of the metal core material. Weld metal segments with short sides to multiple locations, and expand the inner diameter of the resin-made tubular body by mechanical means such as hydraulic pressing with the inner diameter of the synthetic resin tubular body smaller than the outer diameter of the core material. However, by press-fitting into the core material, it was possible to prevent the synthetic resin cylindrical body from slipping out in the axial direction of the metal core material and of course eliminating rotational deviation or idling in the circumferential direction.

[0011]

Embodiments of the present invention will be described with reference to the drawings. 1 is a first embodiment of the present invention, 1 is a resin lining roller, 2 is a metal core material of the resin lining roller 1,
Reference numeral 3 denotes a synthetic resin tubular body fitted into the metal core material 2, and the inner diameter of the synthetic resin tubular body 3 is slightly smaller than the outer diameter of the metal core material 2. 4, 4, 4, ...
Is a concavo-convex portion formed by a return or the like that occurs when the surface of the metal core material 2 is subjected to a hanging operation using, for example, eye chisel. Further, the above-mentioned return may be generated not only in the chipping work with chisel but also in the periphery of the hole when mechanically boring or the like. In short, the unevenness is physically formed on the surface of the metal core material 2. Any means may be used to form the above, and the above-mentioned chipping work may be performed in either the axial direction or the circumferential direction.

The synthetic resin tubular body 3 is heated to room temperature or slightly heated with respect to the metal core material 2 having irregularities formed on the surface, and then the inner diameter of the synthetic resin tubular body 3 is increased. Is smaller than the outer diameter of the metal core material 2 by forcibly fitting the synthetic resin tubular body 3 into the metal core material 2 by mechanical means such as a hydraulic press. Alternatively, the cylindrical body 3 made of synthetic resin is slightly heated so that its inner diameter is expanded, and the cylindrical body 3 is fitted into the metal core material 2.

In the first embodiment of the present invention, as described above, the metal core material 2 having the irregularities formed on the surface thereof is added to the metal core material 2.
3 made of synthetic resin and having an inner diameter slightly smaller than the outer diameter of
Since the inner diameter of the metal core member 2 is pushed into the metal core member 2 while expanding its inner diameter,
4, ... bite into the synthetic resin cylindrical body 3 and both are integrated, and the synthetic resin cylindrical body 3 rotates not only in the axial direction but also in the circumferential direction with respect to the metal core material 2. Misalignment and idle rotation are completely prevented.

FIG. 2 shows a second embodiment of the present invention. In FIG. 2, the same members as in the first embodiment are designated by the same reference numerals. In this second embodiment, short metal segments 6, 6, are provided at a plurality of locations on the surface of the metal core material 2.
6 and the like are welded together, and other configurations are similar to those of the first embodiment. Then, the metal core material 2 having the plurality of short metal segments 6, 6, 6, ...
When the synthetic resin cylindrical body 3 is fitted into the synthetic resin cylindrical body 3 by mechanical means, the metal segments 6, 6, 6, ... There is no fear that the tubular body 3 will move.

According to the present embodiment, the return obtained by hanging the surface of the metal core material with an air chisel or the like is used as it is to physically form irregularities on the surface of the metal core material. Alternatively, a segment of a short piece of metal is welded, and a tubular body made of synthetic resin having an inner diameter slightly smaller than the outer diameter of the metal core material described above, for example, an ultrahigh molecular weight polyethylene tubular body is kept at room temperature or slightly. Heated to fit the above-mentioned synthetic resin tubular body into a metal core material, and apply simple processing to the core material, and further push the synthetic resin tubular body into place Therefore, the synthetic resin cylindrical body and the metal core material are integrally fixed, and the synthetic resin cylindrical body is free from rotational deviation, idling, and slipping out. Therefore, the resin-lined roller of the present invention is extremely easy to manufacture and improves productivity. It is intended to.

[0016]

EFFECT OF THE INVENTION The resin lining roller according to the present invention is formed by physically making a plurality of irregularities on the surface of a metal core material, or by welding at least one segment of a metal short piece to the metal core material. Since a synthetic resin cylindrical body with an inner diameter slightly smaller than the outer diameter was mechanically fitted to the metal core material, the unevenness formed on the surface of the metal core material is simply processed. In addition, the unevenness formed on the surface of the metal core material or the segment of the metal short piece bites into the synthetic resin cylindrical body, and the synthetic resin cylindrical body is surrounded by the circumference of the metal core material. Not only is there no rotational deviation or idling in the direction, but there is no risk of axial slippage.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a first embodiment of a resin lining roller of the present invention.

FIG. 2 is a partially cutaway front view of a second embodiment of a resin lining roller of the present invention.

FIG. 3 is a sectional view of a conventional resin lining roller.

FIG. 4 is a partially cutaway front view of another conventional example.

[Explanation of symbols]

 1 Resin Lining Roller 2 Metal Core Material 3 Synthetic Resin Cylindrical Body 4 Concavo-convex 5 Metal Short Piece Segment

Claims (1)

[Claims] 1. A plurality of irregularities are physically formed on the surface of a metal core material, or at least one segment of a metal short piece is welded to form an inner diameter slightly smaller than the outer diameter of the metal core material. A resin lining roller, characterized in that the synthetic resin tubular body is fitted into the metal core material.