JPS60202009A - Roller for conveyor - Google Patents

Abstract

PURPOSE:To simplify a roller body in structure as well as to facilitate its manufacturing, by pressing a flanged bearing box seal member, which is solidly molded with flexible material such as synthetic resin or the like, in the roller body composed of a steel pipe, etc., while letting the said member hold a bearing outer ring. CONSTITUTION:A flanged bearing box seal member 2 or a solid molding of plastics is attached to an end part of a roller body 1 which is made up of a pipe such as a steel pipe or the like having the specified inner and outer diameters cut off. The outer circumferential part of this seal member 2 is set down to a body holding part 3 having a diameter almost identical to that of the inner circumference of the roller body 1, and an annular flange 4 is formed in an outer end of this holding part 3. In addition, a bearing holding part 10 is installed in an inner circumferential part of the seal member 2, making it hold an outer ring 8 of a main bearing. The seal member 12 like this is pressed in the end part of the roller body 1 in a state that an inner ring 9 of the main bearing 7 is fitted in a roller shaft 15 provided with a projection claw 16 and then a protector cover 19 is fitted, locking the seal member with the fitting of a snap ring 20 to the shaft 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor roller, and more particularly to a conveyor roller that has a simple structure and is capable of inspecting the meandering state of a carried belt during running.

Conventional conveyor rollers, in addition to achieving their original function of supporting the conveyor and transporting objects, also prevent moisture, dust, and other foreign matter from entering the interior of the rollers, especially the rotating bearings. It was happily constructed from a large number of parts. In other words, conventional ρ conveyor rollers have a bearing box formed by pressing or casting a steel plate and attaching it to the inner periphery of the roller body (outer shell), which has been internally ground or clawed. In order to prevent foreign matter from entering from the fitting attachment part between the outer periphery of the bearing box and the roller body, a sealing means made of steel plate and/or resin is required. It was said that

For this reason, not only is it difficult to manufacture conveyor rollers, but assembly is also complicated, making them unsuitable for mass production and thus increasing the cost of the rollers themselves. Furthermore, it is impossible or extremely difficult to achieve a perfect seal, resulting in a high failure rate.

The present invention overcomes the disadvantages of conventional conveyor rollers, particularly those made of steel tubes with desired inner and outer diameters, or tubes made of other materials, which can be simply cut to a desired length. A flanged and glazed receiving box integrally molded from a flexible material such as synthetic resin is press-fitted into the cut roller body, and if desired, the end of the roller body is then fitted with a bearing. To provide a roller for a conveyor having an extremely simple structure, which is constructed by bending inward together with the edge of a box.

Furthermore, the present invention provides a four-ring design for the conveyor when the conveyor is assembled by coloring the entire bearing box or the collar part in a color different from the color of the roller body, such as white, yellow, or red. It has the feature that the meandering state of the belt supported by the belt during running can be inspected very easily. When the belt snakes around too much, it not only reduces operational efficiency, but also
The belt broke and work was forced to stop.
There has been a need for a method that can constantly and easily inspect the meandering state of a belt. The present invention provides means that can fully meet such demands. It is something.

Next, the conveyor roller according to the present invention will be explained in detail based on examples.

As understood by referring to FIG. 1, the roller body 1 is a cylindrical outer tube made of a steel pipe, synthetic resin, ceramic, etc., having a predetermined inner diameter and outer diameter, cut to a desired length. It is a shell.

The flanged shaft box single-layer member 2 attached to the end of the roller body 1 is integrally molded from synthetic resin, preferably 6-nylon. The flanged axle box sealing member 2 has a circular roll body holding portion 3 whose outer circumferential portion has approximately the same diameter as the inner circumferential diameter of the roller body 1, and a large diameter portion at the outer end of the holding portion 5. An annular collar 4 is formed. The outer diameter of the flange 4 is approximately the same as the outer diameter of the roller body 1, and the width t at the outer periphery of the flange 4 can be varied as desired. It is preferably formed so that it is inclined at an angle θ towards the outer side surface 6 (see FIG. 3). By slanting the inner side surface of the collar 4 in this way, the outer peripheral edge of the collar 4 comes into close contact with the cut end surface of the roller body 1, and foreign matter can flow inward from this portion, as will be explained in more detail later. The zero inclination angle θ that can prevent the intrusion of
It will be. Furthermore, in order for the collar 4 to come into close contact with the cut end surface 1' of the roller body 1, the roller body 1 is formed of a steel pipe, and even if the cut end surface 1'' remains cut, no anti-rust treatment is applied. However, the end face is prevented from becoming abnormally rusty.

The inner peripheral portion of the flanged axle box seal member 2 is used as a bearing holding portion 10 to which a bearing means, for example, an outer ring 8 of a ball bearing 7 is attached. The bearing holding part 10 is formed into a generally cylindrical shape, and in particular, an annular projection 11 is formed at the inner end of the bearing holding part 9 so as to protrude in the direction of the central axis.

The outer end of the bearing holder 10 is connected to the roll body holder 5 by an annular rib 12 . On the other hand, an annular flange 13 is formed at the outer end of the bearing holding portion 10 so as to protrude toward the central axis by a predetermined length and cooperate with the annular projection 11 to hold the ball bearing 7.

Next, in order to facilitate understanding of the configuration of the conveyor roller according to the present invention, a method for manufacturing the roller according to the present invention will be briefly described.

First, as shown in FIG. 4, the ball bearing 7 is mounted on the flanged axle box seal member 2. The ball bearing 7 moves in the direction of the arrow from the inside of the flanged axle box sealing member 2, that is, from the compression side in FIG. When the outer ring 8 of the bearing 7 collides with the annular protrusion 11, it expands slightly as shown by the two-dot chain line, and when the entire ball bearing 7 is pushed into the bearing holding part 10, it returns to the original solid line position. Returns elastically. As a result, the ball bearing 7 is fixed and held within the flanged axle box sealing member 2 by the annular protrusion 11 and the annular flange 13.Alternatively, the ball bearing 7 is fixed and held within the flanged axle box sealing member 2 by molding the flanged axle box sealing member 2. At the same time, the flanged axle box seal member 2 holding the ball bearing 7 can be inserted into the end of the roll body 1 as shown in FIG. It is press-fitted from the left side in Figure 2. This press-fitting process is performed until the flange 4 of the flanged axle box sealing member 2 comes into contact with the cut end surface 1' of the four wheel body.As mentioned above, the inner surface 5 of the flange 4 is inclined. Therefore, 5y4 is densely layered on the cut end surface 11 without any gap.Also, the outer circumferential surface of the roll body holding part 6 is in close contact with the inner circumferential surface of the roll body 1, and the roll body holding part A carrier 8 whose portion 5 carries the roll body 1
It will be understood that a seal means is provided to prevent foreign matter from entering inward from the engagement portion between the roll body 1 and the flanged axle box sealing member 2.

When the flanged axle box sealing member 2 is press-fitted into the roll body 1, the ball bearing 7 held integrally with the flanged axle box sealing member 2 has its inner ring 9 placed inside the roller body 1 in advance. The inner ring 9 is inserted into the shaft 15 so that the inner circumferential edge of the inner ring 9 engages with a protruding pawl 16 provided on the shaft 15.

As shown in FIG. 1, the flanged shaft box seal member 2 attached to the roller body 1 and the shaft 15 as described above has an uneven shape in cooperation with the annular flange 15 of the seal member 2. In order to form a passage (labyrinth) L and prevent foreign matter from entering from the outside through the bearing 7, a seal portion 2 is provided.
An inner ring 18 is provided which has a complementary shape to the annular flange 15 of. Furthermore, the outer surface 1 of the flanged axle box sealing member 2
In order to protect the axle box seal member 2, a protective cover 19 can be provided outside the axle box seal member 2.

The inner ring 1B and the protective cover 19 each have a boss portion attached to the shaft 1.
Since it is mounted in a tight fit with the ball bearing 5, foreign matter is completely prevented from entering the ball bearing 1 through this mounting portion. Further, the boss portions of the inner ring 18 and the self-protection cover 19 are located between the inner ring 9 of the ball bearing 7 and an outer stopper, such as a mounting plate or a retaining ring 20, to prevent the conveyor roller from moving in the axial direction. be done.

In the above description, the flanged shaft box sealing member 2 is fixed to the roller body 1 and the roller shaft 15 by the functions of the collar 4 and the stopper means 20. However, if the roller body 1 is made of a flexible material such as a steel pipe, for example In this case, after fitting the flanged shaft box seal member 2 to the end portion 16 of the roller body 1, move the end portion 16 of the roller body 1 in the direction of the arrow as shown in FIG. By bending it inward as shown in
The flanged axle box seal member 2 can be fixed to the roller body 1. In other words, along with the deformation of the end portion 16 of the roller body 1, the roll body holding portion 6 of the flanged axle box sealing member 2 also deforms.
- The flanged axle box sealing member 2 is firmly attached between the roll body 1 and the shaft 15 by being deformed inwardly together with the roll body 1. A roller constructed in this manner is illustrated in FIG.

Furthermore, by bending the roll body 1 inward, the roll body mounting portion 3 of the flanged shaft box sealing member 2 and the inner circumferential surface of the roll body 1 are further brought into close contact with each other. Intrusion of foreign matter from the outside through the device is completely prevented.

Since the conveyor roller according to the present invention is constructed and operates as described above, it is possible to completely prevent foreign matter from entering into the roller from the outside, and to reduce the number of parts and processing. This has the effect that manufacturing and assembly are easy, and the price can therefore be reduced.

The conveyor roller according to the present invention can be manufactured by coloring the outer circumferential surface 22 of the collar 4 or by molding the flanged axle box sealing member 2 with a colored resin of a specific color, such as white, yellow, or red. An annular colored band can be formed at the end of the roller.

The annular colored zone is extremely effective for checking the running condition of the belt.

For example, when the conveyor roller according to the present invention is used in a belt conveyor in which a belt is supported by five rollers as shown in FIG. The difference in distance between the edge and the colored zone 22 of each roller can be clearly determined by mere visual inspection, and the operator can immediately grasp the meandering state of the belt.

Furthermore, the colored edges of the conveyor rollers also serve as a danger indicator line when approaching a running conveyor.

[Brief explanation of the drawing]

1 and 2 are partial vertical sectional views of a conveyor roller according to the present invention. FIG. 3 is a schematic diagram illustrating a procedure for manufacturing the conveyor roller shown in FIG. 1. FIG. 4 is a sectional view illustrating how the bearing is attached to the flanged axle box seal member. FIG. 5 is a schematic cross-sectional view of six conveyors. 6 is a partial schematic plan view of the conveyor of FIG. 5. FIG. 1: Roller body 2: Flammed shaft box seal member 6: Roller body holding section 4: Annular collar 7: Bearing 10: Bearing holding section 12: Annular lip 15: Shaft Fig. 4

Claims (1)

[Claims] 1) A bearing holding part (10) having a generally cylindrical shape and holding a bearing (7) on its inner circumference, and a bearing holding part (10) concentrically with and holding the bearing (7); (10) and is connected by an annular lip (12), a generally cylindrical roller body holder (5), and a larger diameter roller body holder (6) formed at the outer end of the roller body holder (6). A flanged axle box sealing member (2) made of synthetic resin having an annular collar (4) is attached to a cylindrical four-way
Press fit into the end portion (16) of the roller body (1) until the inner surface (5) of the annular collar (4) comes into contact with the cut end surface (1゛) of the roller body; The inner ring (9) of the bearing (7), which holds the outer ring (8) in (2), is attached to the roller shaft (15) so that the roller body (1) can rotate around the roller shaft (15). A roller for a conveyor, further characterized in that the bearing (7) and the flanged axle box seal member (2) are prevented from moving outward. 2) The conveyor roller according to claim 1, wherein an inner ring (1B) and a protective cover (19) are arranged between the stop means (20) and the bearing inner ring (9). 6) The conveyor roller according to claim 2, wherein the inner ring (18) and the annular flange (13) of the flanged axle box seal member (2) cooperate to form a labyrinth. (2) The conveyor roller according to claim 1, wherein the outer surface of at least the flange (4) of the flanged axle box sealing member (2) is colored in a color different from that of the p-ra body (1). 5) The conveyor roller according to claim 4, wherein the inner surface (5) of the collar (4) has a predetermined inclination (θ). a roughly cylindrical roller body holder (6) that holds the bearing (7) concentrically with respect to the holder, surrounds the bearing holder (10), and is connected by an annular rib (12); and the roller body Holding part (3)
A flanged axle box sealing member (2) made of synthetic resin and having a larger diameter annular collar (4) formed at the outer end of the roller body (1) is attached to the end portion (16) of the cylindrical roller body (1). , the annular collar (4
) until the inner surface (5) of the roller body (1'') comes into contact with the cut end surface (1'') of the roller body (1).
16) inwardly together with the roll body holding portion (6), thereby fixing the flanged axle box seal member (2) to the roller body (1); The bearing (7) has the outer ring (8) held by the member (2), and the inner ring (9) is attached to the roller shaft (+5) so that the roller body (1) can rotate around the roller shaft (15). 7) A roller for a conveyor according to claim 6, wherein an inner ring (18) and a protective cover (19) are arranged adjacent to the inside of the bearing (9). roller. 8) The conveyor roller according to claim 7, wherein the inner ring (18) and the annular flange (15) of the flanged axle box seal member (2) cooperate to form a labyrinth. 9) The conveyor roller according to claim 6, wherein at least the outer surface of the collar (4) of the flanged axle box sealing member (2) is colored in a different color from the roller body (1). 10) The conveyor roller according to claim 9, wherein the inner surface (5) of the collar (4) has a predetermined slope (θ).