JPH07323907A - Belt holding device - Google Patents

Abstract

PURPOSE:To provide such a belt holding device as keeps the drive resistance at a small value and prevents the life of a conveying belt from becoming short. CONSTITUTION:In a belt holding device used for a curved conveyor, beads 20, which are formed in the outer periphery of a conveying belt 2, are held by a large number of revolving bodies 30, 31 in a nipped manner, so that the movement of the conveying belt 2 toward the inner peripheral direction is prevented. In addition, at least one of the revolving bodies 30, 31 is inclined from the outside to the inside toward the belt surface side, and the sectional form of the outer peripheral surface of the inclined, revolving body is set in the shape of a circular arc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved conveyor, and more particularly to a belt holding device for preventing inward movement of a conveyor belt.

[0002]

2. Description of the Related Art In a curved conveyor, an inward moving force acts on a conveyor belt in use, and therefore, in order to prevent this, as shown in FIG. A bead 20 having a semicircular cross section is provided and a belt holding device 3 for holding the bead 20 is provided.

As shown in FIG. 7 and FIG. 8, the belt holding device 3 is attached to a fixed portion F located on the outer peripheral side of the conveyor belt 2 and is provided in such a manner that it is inclined downward from the inside toward the outside. The rotary body 30 includes a rotary body 30, a vertical rotary body 31, and a frame 32 to which the rotary bodies 30 and 31 are rotatably attached. here,
The outer peripheral surface of the rotating body 30 is attached to the bead 20 and the rotating body 3
1 is brought into contact with the opposite side surface of the conveyor belt 2 on which the beads 20 are located, and the conveyor belt 2 is held such that its outer peripheral edge is sandwiched by the rotating bodies 30 and 31. .

However, in the above-mentioned conventional belt holding device 3, the bead 20 bites below the rotating body 30 when the moving force acts on the conveyor belt 2, so that the driving resistance becomes large. was there. As one means for solving this problem, it is conceivable to tilt the rotating body 30 in order to reduce the angle formed by the rotating body 30 and the conveyor belt 2 as shown by the chain double-dashed line in FIG.
When the transport belt 2 wobbles (the transport belt 2 moves up and down), the corner portion A of the rotating body 30 comes into contact with the transport belt 3, which shortens the life of the transport belt 2. There will be problems. Therefore, this method cannot be adopted.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a belt holding device which can suppress the driving resistance to a small value and which does not shorten the life of the carrying belt.

[0006]

According to the present invention, a bead 20 formed on the outer peripheral edge of a conveyor belt 2 is provided with a large number of rotating bodies 30,
A belt holding device used for a curve conveyor, which is held in a state of being sandwiched by 31, thereby preventing the conveyance belt 2 from moving in the inner circumferential direction, and is at least one of the rotating bodies 30 and 31. One of them is inclined from the outer side toward the inner side toward the belt surface side, and the outer peripheral surface of the inclined rotating body is set to have an arc-shaped cross section.

Further, according to the present invention, the bead 20 formed on the outer peripheral edge of the conveyor belt 2 is held in such a manner that it is sandwiched by a large number of rotating bodies 30 and 31, whereby the movement of the conveyor belt 2 in the inner circumferential direction is maintained. A belt holding device used for a curve conveyor, which is configured to prevent the rotating body 3
At least one of 0 and 31 is inclined from the outer side toward the inner side toward the belt surface side, and further, among the corner portions of the inclined rotating body, at least at the corner portion on the side of the conveyor belt, the belt surface is formed. Is provided with a chamfer 33 that is substantially parallel to the.

[0008]

The present invention operates as follows.

In this belt holding device, the inclined rotating body has an outer peripheral surface set to have an arcuate cross section (or, at least, the corner of the inclined rotating body is on the side of the conveyor belt. Since the chamfered portion 33 substantially parallel to the belt surface is provided at the corner portion), when the inclination angle of the rotating body with respect to the conveyor belt 2 is reduced, the conveyor belt 2 is in a wavy operating state. However, the rotating body and the conveyor belt 2 do not easily come into contact with each other, and even if they make contact, the conveyor belt 2 is hardly damaged. Therefore, in this belt holding device, the bead 20 can be prevented from biting below the rotating body 30 and the driving resistance can be reduced by reducing the inclination angle of the rotating body with respect to the conveyor belt 2.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described with reference to the drawings shown as embodiments.

As shown in FIGS. 1 and 2, the curved conveyor of this embodiment is basically rotatably supported by a frame 4 formed in an arc shape and the end portions of the frame 4, respectively. The taper roller 1 and the taper rollers 1, 1
A loop-shaped transport belt 2 stretched in an arc shape along the frame 4 and a belt of a type in which the outer edge of the transport belt 2 is sandwiched to prevent the transport belt 2 from moving inward. It has a holding device 3 (see FIG. 3) and a pedestal 5 that supports the frame 4 in a predetermined posture, and one of the taper rollers 1 is rotated by a motor M so that the conveyor belt 2 is rotationally driven. I have to.

As shown in FIG. 3, the frame 4 is provided with left and right supporting members 40 and 41 and a belt placing plate 42 that is installed between the supporting members 40 and 41. The upper surface position of the plate 42 is set in correspondence with the upper surface position of the taper rollers 1, 1. And this frame 4
A pair of bearing units (not shown) are respectively arranged at the start end and the end of the taper roller, and the taper rollers 1, 1 are rotatably supported by the bearing units.

As shown in FIG. 3 and FIG. 4, the belt holding device 3 includes rotating bodies 30 and 30 which are provided so as to incline toward the belt surface side from the inside toward the outside, and a rotating body which is provided vertically. 31 and 31 and a frame 32 to which these rotating bodies 30 and 31 are rotatably attached, and the frame 32 is attached to the support member 40 by bolting. Then, the rotating bodies 30, 31
As shown in FIG. 4, the resin ring 3b is configured to be fitted onto the outer race of the normal bearing 3a, and the outer periphery of the resin ring 3b is formed in an arcuate cross section. In the conveyor of this embodiment, the rotating body 3
The outer peripheral surface of 0 is brought into contact with the bead 20, and the rotating body 31 is brought into contact with the opposite side surface of the conveying belt 2 on which the bead 20 is located. The outer peripheral edge of the conveying belt 2 is formed by the rotating bodies 30 and 31. It is designed to be held in a sandwiched manner.

In this curved conveyor, the belt holding device 3
Since it has the above configuration, as described in the action column,
The driving resistance can be kept small and the life of the conveyor belt is not shortened.

Instead of the rotating body 30 of the above embodiment, as shown in FIG. 5, a chamfered portion 33, which is substantially parallel to the belt surface, is used at the corner on the side of the conveyor belt 2. You may do it. Further, as the rotating body 31, a rotating body having a conventional shape may be used as shown in FIG.
You may use the thing of the structure similar to.

Further, the present invention can be applied to the conventional curve conveyor of the type in which both the rotating bodies 30 and 31 are provided in an inclined posture and the bead portions are provided on both sides of the conveyor belt 2, and the same effects can be obtained. Play.

[0017]

From the contents described in the above-mentioned action column,
It was possible to provide a belt holding device that can suppress the driving resistance to a small value and that does not shorten the life of the conveyor belt.

[Brief description of drawings]

FIG. 1 is a plan view showing a curved conveyor using a belt holding device according to an embodiment of the present invention.

FIG. 2 is a view showing a taper roller of the curve conveyor, a motor for rotating the taper roller, and the like.

FIG. 3 is a sectional view of the curved conveyor.

FIG. 4 is an enlarged view of a main part of the belt holding device.

FIG. 5 is an enlarged view of a main part of a belt holding device according to another embodiment of the present invention.

FIG. 6 is an enlarged view of a main part of a belt holding device according to another embodiment of the present invention.

FIG. 7 is a sectional view of a curved conveyor having a conventional belt holding device.

FIG. 8 is an enlarged view of a main part of a conventional belt holding device.

[Explanation of symbols]

 2 conveyor belt 3 belt holding device 20 bead 30 rotating body 31 rotating body 33 chamfering section

Claims (2)

[Claims] 1. A bead (20) formed on an outer peripheral edge of a conveyor belt (2) is held by being sandwiched by a large number of rotating bodies (30) (31), whereby a conveyor belt (2) is held.
Is a belt holding device used for a curve conveyor, which is configured to prevent the inner surface of the rotating body from moving from at least one of the rotating bodies (30) and (31) toward the inside of the belt. A belt holding device, wherein the outer peripheral surface of the inclined rotating body is set to have an arcuate cross section. 2. The bead (20) formed on the outer peripheral edge of the conveyor belt (2) is held by being sandwiched by a large number of rotating bodies (30) (31), whereby the conveyor belt (2) is held.
Is a belt holding device used for a curve conveyor, which is configured to prevent the inner surface of the rotating body from moving from at least one of the rotating bodies (30) and (31) toward the inside of the belt. And a chamfered portion (33) substantially parallel to the belt surface is provided at a corner of the tilted rotating body that is at least on the conveyor belt side. Belt holding device.