JPH0891522A - Driving belt for roller conveyor - Google Patents

Abstract

PURPOSE: To provide a driving belt for a roller conveyor stably transmitting rotation and never cut off due to abrasion during its use. CONSTITUTION: Multiple core bodies 21 made of a material having the strength higher than that of a circular belt 20 are inserted into the circular belt 20 suspended between a driving rotary shaft and a wheel and transmitting the rotation of the driving rotary shaft to a transmission roller.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive belt of a roller conveyor which is wound around a wheel fixed to a transmission roller and a drive rotation shaft to transmit rotation.

[0002]

2. Description of the Related Art Conventionally, in a roller conveyor, there is known a round belt wound around a wheel fixed to a transmission roller and a drive rotation shaft in order to transmit the rotation of the drive rotation shaft to the transmission roller. The round belt is usually made of urethane, rubber or the like. This is because a predetermined friction coefficient is required on the surface for transmitting the drive, and it is necessary to prevent wear and the like due to contact with the belt on the wheel and the drive rotation shaft.

[0003]

However, the strength of the above-mentioned round belt gradually decreases with use due to elongation due to fatigue, abrasion due to contact with the wheel and the drive rotating shaft, and the like. When the strength is reduced, the rotation transmission becomes unstable, and it may eventually break naturally. In particular, when a crack is generated on the surface of the belt, the possibility that the crack is gradually increased and cut is extremely high. If the belt breaks, not only the rotation is not transmitted, but also the broken belt may get entangled in the surrounding area and cause the drive mechanism to malfunction, so it is necessary to replace the broken belt promptly. . However, it is very difficult to replace a broken belt due to the structure of the roller conveyor in which the drive rotary shafts are continuously installed along the transport direction.

The present invention has been made in view of the above problems, and an object thereof is to stably transmit rotation in a drive belt of a roller conveyor, and at the same time, to cut due to wear or the like accompanying use. To prevent.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 is a belt which is stretched around a wheel fixed to a transmission roller and a drive rotation shaft to transmit rotation. , A drive belt of a roller conveyor provided with a reinforcing member.

According to a second aspect of the invention, the reinforcing member is
A core body that is inserted in the center of the belt and has a higher strength than the belt.

According to a third aspect of the present invention, the core has a plurality of cores.

[0008]

In the drive belt of the roller conveyor according to the present invention, since the reinforcing member is attached to the belt, the belt will not be broken due to abrasion or the like caused by use.
For example, since the core body made of a material having higher strength than the belt is inserted in the center of the belt, the belt is not broken. Further, since the belt surface conditions such as the friction coefficient do not change, the rotation is stably transmitted, and the wheel and the drive rotation shaft are not worn by the belt. Further, since a plurality of the cores are inserted, the belt strength is improved according to an increase in the cross-sectional area of the core while maintaining the belt surface condition.

[0009]

EXAMPLES Examples of the present invention will be described below with reference to the drawings, but the present invention is not limited to these examples without departing from the gist of the present invention. 1 is a perspective view of a partial cross-section of a round belt showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of a roller conveyor, and FIG. 3 is an enlarged cross-sectional view along the line II-II of FIG. FIG. 4 is a sectional view taken along line III-III of FIG. 3, and FIG. 5 is a sectional view taken along line IV-IV of FIG. In this specification, the front means the right side of FIG. 2, the rear means the left side of the figure, the left means the back side of the paper of FIG. 2, and the right means the front side of the drawing.

As shown in FIG. 2, the roller conveyor 1 includes a base frame 2 and a large number of carrier rollers rotatably provided at predetermined intervals in the front-rear direction with the axis of the base frame 2 oriented in the left-right direction. 3 and 3.

The roller conveyor 1 has a plurality of zones 5 which are sectioned at predetermined intervals longer than the article W along the carrying direction, and these zone 5 have four carrier rollers 3.

The front and rear carrier rollers 3 in the zone 5 are paired, and the bracket 7 is positioned so as to be located below the paired carrier rollers 3.
Is fixed to the base frame 2, and a bearing 9 is provided on the bracket 7 so as to be swingable up and down by a pivot 8 whose axial center is oriented in the front-rear direction.
Further, the rotary shaft 10 is rotatably fitted such that the shaft center is located between the front and rear carrier rollers 3, and the transmission roller 12 and the wheel 13 are mounted on the rotary shaft 10.
Is stopped. With such a configuration, the bearing 9 is swung upward so that the transmission roller 12 is brought into contact with the pair of front and rear carrier rollers 3, whereby the transmission roller 1
The rotation of 2 can be transmitted to the pair of front and rear carrier rollers 3, while the bearing 9 is swung downward to move the transmission roller 12 away from the carrier roller 3.
The rotation of the transmission roller 12 can be prevented from being transmitted to the carrier roller 3.

A brake shoe 14 is formed on the upper side of the bearing 9 opposite to the transmission roller 12 with the pivot 8 as a boundary. When the transmission roller 12 swings downward and stops contacting the carrier roller 3, the brake shoe 14 swings upward and contacts the carrier roller 3 like a seesaw to rotate the carrier roller 3. It is to prevent.

An operated piece 15 is hung downwardly from the lower portion of the bearing 9, and a portion below the pivot 8 of the operated piece 15 is pushed to the left by an operating device 16 such as a linear solenoid provided on the base frame 2. As a result, the transmission roller 12 can be brought into contact with the carrier roller 3. When the actuating device 16 does not push the actuated piece 15, the transmission roller 12 separates from the carrier roller 3 due to its own weight and the tension of the round belt 20. When the transmission roller 12 no longer contacts the carrier roller 3, the brake shoe 14 contacts the carrier roller 3 and blocks the rotation of the carrier roller 3 as described above. That is, with such a configuration, 1
Rotate the carrier roller 3 with one actuator 16,
It can prevent rotation.

As shown in FIG. 1, the round belt 20 which is stretched between the wheel 13 and the drive rotary shaft 18 and transmits the rotation of the drive rotary shaft 18 to the transmission roller 12 is made of urethane, as shown in FIG.
It is formed of a material such as rubber having a high friction coefficient on the surface. When the friction coefficient of the surface of the round belt 20 is low, slippage becomes large at the contact portion with the wheel 13 and the drive rotary shaft 18, and rotation is not stably transmitted. A plurality of core bodies 21 are inserted in the center of the round belt 20. The core body 21 is a wire, aramid, or the like having higher strength than the round belt 20, and is made of a material that is more difficult to cut than the round belt 20. Belt engaging portions 19 are formed on the drive rotating shaft 18 at predetermined intervals so that the position where the round belt 20 is hooked is determined.

As shown in FIG. 2, an article detector 23 is provided at the front position of each zone 5 in the base frame 2.
The article detector 23 may be a transmission type or reflection type sensor that uses signals such as light, radio waves, sound waves, or mechanical switches that are brought into contact with the article W. When the article W is detected by the article detector 23, all the actuating devices 16 belonging to the zone 5 on the subsequent side of the zone 5 to which the article detector 23 belongs are in the non-actuated state (the operated piece 15 is not pushed to the left side). ), The transmission roller 12 does not hit the carrier roller 3, while the article W is not detected by the article detector 23, the operating device 1
The transmission roller 12 is brought into contact with the carrier roller 3 by setting 6 as an operating state (a state in which the operated piece 15 is pushed to the left side).

In a state where all the article detectors 23 do not detect the article W, all the carrier rollers 3 in all the zones 5 are rotating. Article W being conveyed by the article detector 23
Is detected, all the actuating devices 16 in the zone 5 on the subsequent side of the zone 5 in which the article detector 23 is present are deactivated, and the rotation of all the carrier rollers 3 in the subsequent zone 5 is stopped. That is, the succeeding article W is temporarily stopped before colliding with the article W immediately ahead. Therefore, the article W does not push the front article W or collide with the front article W. Leading Zone 5
When the article W is sent out, the actuator 16 in the zone 5 on the trailing side is restored to the initial state, and the article W temporarily stopped as described above is sent forward again.

The plurality of core bodies 21 inserted in the central portion of the round belt 20 may be only one piece, and in the case of two or more pieces, they may be inserted in a spirally assembled state. . Needless to say, the material, diameter, and number of cores are not limited to the above examples, depending on the material, diameter, required strength, elasticity, etc. of the belt.

[0019]

As described above, in the roller driving belt according to the present invention, in the invention described in claim 1, the reinforcing member can prevent the belt from being broken due to abrasion or the like. Therefore, the broken belt does not get entangled in the peripheral portion, and it is not necessary to replace the broken belt.

According to the second aspect of the invention, since the core body made of a material having higher strength than the belt is inserted in the central portion of the belt,
It is possible to maintain stable rotation transmission and prevent wear due to contact between the wheel and the drive rotation shaft with the belt.

According to the third aspect of the invention, by inserting a plurality of the core bodies, the strength is further improved as the cross-sectional area of the core body is increased while maintaining the belt surface condition.

[Brief description of drawings]

FIG. 1 is a perspective view of a partial cross section of a round belt showing an embodiment of the present invention.

FIG. 2 is a side sectional view of a main part of a roller conveyor.

FIG. 3 is an enlarged cross-sectional view taken along the line II-II in FIG. 2 with intermediate portions omitted.

FIG. 4 is a sectional view taken along line III-III in FIG.

5 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 3 Carrier Roller 12 Transmission Roller 13 Wheel 18 Drive Rotation Shaft 20 Round Belt 21 Core

Claims (3)

[Claims] 1. A drive belt for a roller conveyor, which is a belt which is stretched around a wheel fixed to a transmission roller and a drive rotation shaft to transmit rotation, and which is provided with a reinforcing member. 2. The drive belt for a roller conveyor according to claim 1, wherein the reinforcing member is a core body that is inserted in the center of the belt and is made of a material having higher strength than the belt. 3. The drive belt for a roller conveyor according to claim 2, wherein the core comprises a plurality of cores.