JPH08133438A - Curve conveyor - Google Patents

Abstract

PURPOSE: To reduce the driving resistance of a curve conveyor, and to prolong the lifetime by forming a pinching rotor fitting member of a belt holding device from an elastic body so that the pinching rotating body can follow the snaking of a carrying belt. CONSTITUTION: A thick part 20 formed in the peripheral edge of a loop-like carrying belt 2 is held by multiple belt holding devices 3 arranged along the peripheral edge of the carrying belt 2 so as to hinder the inward movement of the carrying belt 2. In this conveyor, a main body 30, to which pinching rotors 31, 32, 33 are fitted, is made of an elastic body. In the case where the carrying belt 2 generates the meander, the external force with the meander is applied to the belt holding devices 3, and the carrying belt 2 is moved inside, resisting the pinching force of the rotors 31, 33 and 32, 33. At this stage, the main body 30 is elastically deformed and the rotor 31 or 32 follows the meander of the carrying belt 2 and displaced in relation to the rotor 33. As a result, driving resistance of the curve conveyor is reduced, and the abrasion of the thick part 20 is reduced so as to prolong the lifetime.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art In a curved conveyor, in order to prevent an inward moving force (hereinafter referred to as a centripetal force) from acting on a conveying belt in a use state, as shown in FIG. A bead BD (thick portion) having a semicircular cross-section is provided on the outer peripheral edge of the bead BD.
A belt holding device 9 for holding the belt is provided.

The belt holding device 9 is, as shown in FIG.
A bearing 90, which is attached to a fixed portion F located on the outer peripheral side of the conveyor belt 2 and is provided in a manner inclining downward from the inside to the outside, a bearing 91 provided vertically, and these bearings 90, It is composed of a rigid main body 92 to which 91 is rotatably attached. Here, the outer peripheral surface of the bearing 90 is brought into contact with the bead BD, the bearing 91 is brought into contact with the opposite side surface of the conveyor belt 2 where the bead BD is located, and the outer peripheral edge of the conveyor belt 2 is the bearing 90. , 9
It is configured to be held in a state of being sandwiched by 1.

However, when the conveyor belt 2 meanders, the centripetal force does not act evenly on the bearings 90 and 91 arranged in large numbers along the outer peripheral portion of the conveyor belt 2, which causes the following problems. Occurs. ． The energy loss and the bearing resistance increase due to the deformation of the bead BD due to the pressing of the bead BD, and the driving resistance of the entire conveyor increases. ． The increased pressing of the bead BD promotes wear of the bead BD and shortens the life of the entire conveyor.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a curved conveyor having a small driving resistance and a long life.

[0006]

In the first invention of this application, a thick portion 20 formed on the outer peripheral edge of a loop-shaped conveyor belt 2 is arranged along the outer peripheral edge of the conveyor belt 2. In a curved conveyor that is held by a large number of belt holding devices 3 and thereby prevents the inward movement of the conveyor belt 2, each belt holder 3 is fixed outside the conveyor belt 2. A main body 30 attached to the portion F and at least a part of which is made of an elastic member, a rotating body 33 rotatably attached to the main body 30 and arranged in a loop of the conveyor belt 2, and a main body 30 rotatable And rotating bodies 31 and 32 arranged outside the loop of the conveying belt 2, and the forward portion of the conveying belt 2 is formed by the rotating bodies 31 and 33.
The return paths of the conveyor belt 2 are sandwiched by the rotating bodies 32 and 33, and the rotating bodies 31 and 32 are slightly displaced with respect to the rotating body 33 by elastic deformation of the main body 30. .

In the second invention of this application, a large number of belt holding devices 3 in which the thick portion 20 formed on the outer peripheral edge of the loop-shaped conveyor belt 2 is arranged along the outer peripheral edge of the conveyor belt 2. In the curved conveyor, which is held by means of the above, and thereby prevents the transfer belt 2 from moving inward, each belt holding device 3 is attached to the fixed portion F located outside the transfer belt 2 and A main body 30 at least a part of which is formed of an elastic member, a pair of rotating bodies 31a and 31b rotatably attached to the main body 30 so as to sandwich the forward side of the transfer belt 2, and the transfer belt 2 And a pair of rotating bodies 32a and 32b rotatably attached to the main body 30 so as to sandwich the return path side of the main body 30 outside the loop of the conveyor belt 2 due to elastic deformation of the main body 30. Rotating body 31a, the rotation member 31b and 32b is in the loop, with respect to 32a, are to be slightly displaced, respectively.

[0008]

The present invention operates as follows. (First Invention) When the conveyor belt 2 meanders, the external force associated with the meandering acts on the belt holding device 3. In the curved conveyor of the invention, the conveyor belt 2
When the body 30 moves inward against the holding force of the rotating bodies 31 and 33 (the rotating bodies 32 and 33), the main body 30 elastically deforms and the rotating body 31 moves relative to the rotating body 33 (the rotating body 32 is 33)), respectively. That is, in the curved conveyor of the present invention, the rotating body follows the meandering of the conveyor belt 2, and the centripetal force acting on the rotating body is equalized. (Second invention) When the conveyor belt 2 meanders, the external force accompanying the meandering acts on the belt holding device 3. However, in the curved conveyor of the invention, the conveyor belt 2
Is moved inward against the clamping force of the rotating bodies 31a, 31b (rotating bodies 32a, 32b), the main body 30 is elastically deformed and the rotating body 31a is rotated relative to the rotating body 31b (the rotating body 32b is rotated by the rotating body 32b). 32a), respectively. That is, in the curved conveyor of the present invention,
The rotating body follows the meandering of the conveyor belt 2, and the centripetal force acting on the rotating body is equalized.

Therefore, in the curved conveyors of these inventions, Due to the deformation of the thick portion 20 due to the pressing of the thick portion 20, the energy loss and the bearing resistance are smaller than those described in the section of the related art, and the driving resistance of the entire conveyor is small. ． Since the increase in the pressing force of the thick portion 20 is smaller than that described in the section of the conventional art, the thick portion 20 is less worn and the life of the entire conveyor is extended.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

As shown in FIGS. 1 and 2, the curved conveyor of this embodiment is basically rotatably supported by a frame 7 formed in an arc shape and the end portions of the frame 7, 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 FIGS. 4 and 5) and a pedestal 5 that supports the frame 4 in a predetermined posture. The conveyor belt 2 is rotated so that one of the taper rollers 1 is rotated by a motor M. I'm trying to drive.

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. A pair of bearing units (not shown) are provided at the start end and the end of the frame, and the taper rollers 1 and 1 are rotatably supported by the bearing units.

As shown in FIG. 3 and FIG. 5, the belt holding device 3 includes a rotating body 31 which is inclined downward from an inner peripheral side of the conveyor belt 2 toward an outer peripheral side thereof, and an inner portion of the conveyor belt 2. A rotating body 32 that is inclined upward from the peripheral side toward the outer peripheral side, a central rotating body 33 that is provided perpendicularly to the conveyor belt 2, and a spring plate that rotatably attaches these rotating bodies, respectively. It is composed of the main body 30 made of
The main body 30 is attached to the support member 40 (corresponding to the fixing portion F in the column of means) by bolting. Then, the rotating body 33 is connected to the forward / backward path portions 21 and 2 of the conveyor belt 2.
Between the two, the rotating body 31 is on the forward path upper surface side of the transport belt 2, the rotating body 32 is on the return path lower surface side of the transport belt 2,
The bead B is arranged by the rotator 31 and the rotator 33 to form the forward path portion 21 of the conveyor belt 2 and the rotator 32 and the rotator 33 to form the return path portion 22 of the conveyor belt 2.
D (corresponding to the thick portion 20 described in the column of means) is sandwiched. In this embodiment, basically, the rotating body 3
1, 32 and 33 are constituted by bearings, and the inner race of the bearing is supported and fixed, and the outer race on which a resin ring having a semicircular cross section is fitted is used as a rotating portion. Further, the rotating bodies 31 and 32 can be positionally adjusted in the directions indicated by arrows A and B shown in FIGS. 4 and 5.

In this curved conveyor, the belt holding device 3
Since it has the above configuration, as described in the column of action,
When the conveyor belt 2 meanders, the rotors 31 and 32 are displaced from the rotor 33 by following the meandering of the conveyor belt 2 from the solid line state shown in FIG. As a result, the curved conveyor has a low driving resistance and a long life.

Instead of the belt holding device 3 of the above embodiment, the belt holding device shown in FIG. 7 can be used. In this belt holding device, the main body 30 is composed of hard plates 30a, 30b, 30c and hard plates 30a, 30b as shown in FIG.
Kick spring 30d for connecting each other and hard plates 30a, 30c
The kick springs 30e are connected to each other, and the rotating bodies 31, 32 are formed by elastic deformation of the kick springs 30d, 30e.
Are capable of being slightly displaced with respect to the rotating body 33.

Further, FIG. 8 shows the forward path 2 of the conveyor belt 2.
1 shows a belt holding device 3 and the like of a type in which a pair of rotating bodies 31a and 31b sandwich the return path 22 between a pair of rotating bodies 32a and 32b.
Is composed of a spring plate. In this curved conveyor, when the conveyor belt 2 moves inward against the holding force of the rotating bodies 31a, 31b (rotating bodies 32a, 32b), the main body 30 elastically deforms and the rotating body 31a rotates. On the other hand, the rotating body 32b is slightly displaced with respect to the rotating body 32a, and the rotating body follows the meandering of the conveyor belt 2.

Further, in place of all the embodiments described above, a part or all of the main body 30 is made of elastic synthetic resin,
Similarly to the above, the rotating body may be made to follow the meandering of the conveyor belt 2.

[0018]

The present invention having the above-mentioned structure has the following effects.

From the contents described in the section of action, it is possible to provide a curved conveyor having a small driving resistance and a long life.

[Brief description of drawings]

FIG. 1 is a plan view showing a curved conveyor 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 a perspective view of a belt holding device of the curve conveyor.

FIG. 5 is a sectional view of the belt holding device.

FIG. 6 is a cross-sectional view showing a state where a main body of the belt holding device is elastically deformed.

FIG. 7 is a sectional view of a belt holding device according to another embodiment.

FIG. 8 is a sectional view of a belt holding device according to another embodiment.

FIG. 9 is a sectional view of a curved conveyor having a prior art belt holding device.

[Explanation of symbols]

 F Fixed part BD Bead 2 Conveyor belt 3 Belt holding device 20 Thick part 30 Main body 31 Rotating body 31a Rotating body 31b Rotating body 32 Rotating body 32a Rotating body 32b Rotating body 33 Rotating body

Claims (2)

[Claims] 1. A large number of belt holding devices (3) in which a thick portion (20) formed on the outer peripheral edge of a loop-shaped conveyor belt (2) is arranged along the outer peripheral edge of the conveyor belt (2). ), Thereby preventing the transfer belt (2) from moving inward, each belt holding device (3) is located outside the transfer belt (2). A main body (30) attached to the fixed portion (F) and at least a part of which is composed of an elastic member;
0) rotatably attached to the conveyor belt (2)
The rotating body (33) arranged in the loop of the main body (3)
0) rotatably attached to the conveyor belt (2)
And a rotating body (31) (32) disposed outside the loop of the rotating body (31) (32), and the rotating body (31) (33) to the forward path of the conveyor belt (2), the rotating body (3).
2) By (33), the return path of the conveyor belt (2)
A curved conveyer characterized in that the rotating body (31) (32) is slightly displaced with respect to the rotating body (33) due to elastic deformation of the main body (30). 2. A large number of belt holding devices (3) in which a thick portion (20) formed on the outer peripheral edge of a loop-shaped conveyor belt (2) is arranged along the outer peripheral edge of the conveyor belt (2). ), Thereby preventing the transfer belt (2) from moving inward, each belt holding device (3) is located outside the transfer belt (2). A main body (30) which is attached to a fixed portion (F) and at least a part of which is made of an elastic member, and is rotatably attached to the main body (30) so as to sandwich the forward side of the conveyor belt (2). A pair of rotating bodies (31a)
(31b) and a pair of rotating bodies (32a) (32b) rotatably attached to the main body (30) so as to sandwich the return path side of the conveyor belt (2). Due to the elastic deformation of the main body (30), the rotating bodies (31a) (32b) outside the loop of the conveyor belt (2) are slightly displaced with respect to the rotating bodies (31b) (32a) inside the loop. A curved conveyor characterized by that.