JPH0724323Y2 - Accumulate roller conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a belt-driven roller conveyor, and more particularly to a roller conveyor having an accumulation rate function.

[Prior Art] As is well known, a belt-driven roller conveyor is used to convey and sort various products. In this conveyor, a large number of conveying rollers are rotatably supported on the upper surface of the frame, and the rollers are connected to a driving shaft rotatably supported on the lower surface of the frame by a belt. The driving shaft is rotated by a motor. This rotation is transmitted to the conveyance roller by the belt.

[Problems to be Solved by the Invention] By the way, in the belt driven roller conveyor, when the transported load is stopped and accumulated, there is no accumulation rate function.
Line pressure on the conveyor may cause the cargo to collapse or the cargo to drop and be damaged.

Therefore, in order to add the accumulation rate function, the frictional force of the belt-driving drive ring attached to the drive shaft is adjusted. However, if the frictional force is reduced, the driving force for rotating the conveying roller is weakened.

The present invention has been made in order to eliminate the above-mentioned problems of the conventional type, and the purpose thereof is to provide a belt-driven roller conveyor which has a simple structure and is capable of reliably accumulating conveyed objects and having a driving force. To do.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the accumulating roller conveyor of the present invention has a large number of conveying rollers axially supported on the upper surface of the frame, and each roller is on the lower surface of the frame in a direction orthogonal to the rollers. In an accumulation rate conveyor that is rotated by a drive shaft that is rotatably supported on the drive shaft, the transfer roller is divided into a plurality of transfer roller zones, and a plurality of conductive shafts corresponding to the transfer roller zone are provided laterally of the drive shaft as drive shafts. A friction roller that is supported in parallel and connects each roller to the conductive shaft with a belt, and further, the drive shaft and the conductive shaft are mounted on a lower surface of the frame and axially supported by a lever that is always urged upward. And a detection roller for releasing the connection is attached to the tip of the lever so as to project to the conveying surface.

In the above-described accumulation rate conveyor, when the cargo being conveyed comes into contact with the detection roller protruding on the conveyance surface, the lever on which the detection roller is pivoted pivots downward to pivotally support the conveyance roller zone immediately after the cargo. The connection between the friction roller and the transmission shaft and the drive shaft is released. Then, the transport rollers in the same zone are all stopped to accumulate the cargo on the same zone, thereby preventing the collision and the drop of the pursuing cargo.

[Embodiment] The present invention will be specifically described below based on the illustrated embodiment.

FIG. 1 is a partially omitted plan view showing an embodiment of the present invention,
FIG. 2 is a side view of the same as above. Reference numeral 10 in the figure is an accumulation rate conveyor.

The accumulation rate conveyor 10 includes a pair of left and right conveyor frames 11, a large number of conveyor rollers 12 axially supported on the upper surfaces of the conveyor frames 12, a drive shaft 13 and a conveyor roller 12 axially supported on the lower surface of the conveyor rollers 12 so as to be orthogonal to the conveyor rollers. A plurality of conductive shafts 14 rotatably supported on the lower surface of the drive shaft 13 in parallel with the drive shafts 13 and the conductive shafts 14;
The friction roller 15 connecting the above is used as a main member.

Each of the transport rollers 12 has a groove 16 for belting, which will be described later, formed on the circumferential surface of the end of the roller, and the transport roller zones A and B have a predetermined number (five in this embodiment) in the transport direction. , C ... Are formed.

As described above, the drive shaft 13 is arranged below the carrying roller 12 so as to be orthogonal to the carrying roller, and the left and right frames 11, 11 are arranged.
It is supported by a bearing 18 fixed to the lower surface of a connecting member 17 that connects the two, and is rotated by a drive mechanism (not shown) including a motor arranged in the frame 11.

A conductive shaft 14 is pivotally supported for each roller zone A, B, C ... At the lower surface of the transport roller 12 and at a position corresponding to a groove 16 for belting provided on the transport roller 12.
The transmission shaft 14 is supported by bearings 19, 19 fixed to the lower surface of the connecting member 17, and a groove 20 is provided at a position corresponding to the groove 16 of the conveying roller 12 constituting each roller zone A, B, C .... A drive ring 21 is attached, and a round belt 22 is stretched between the groove 16 of the roller 12 and the groove 20 of the drive ring 21 to form a drive shaft.
Friction roller 15 connects 13 and each transmission shaft 14.

As shown in FIG. 3, each of the friction rollers 15 is arranged in the intermediate portion between the drive shaft 13 and the transmission shaft 14, and can be lifted and lowered.
Supported by 23.

That is, an inverted L-shaped mounting member 24 is fixed to the lower surface of the connecting member 17, and a pin is attached to the U-shaped bracket 25 attached to the upper end of the mounting member 24.
Mount lever 23 cantilevered using 26. As shown in FIGS. 1 and 2, each lever 23 has a length extending over two zones (A zone and B zone, B zone and C zone), and a base portion 23a and a tip portion which are parallel to the drive shaft 13 23b is connected by a connecting member 23c which is orthogonal to these, and is almost Z-shaped,
The detection roller 28 is mounted on the upper surface of the free end side through a bearing member 27 so as to project from the conveying surface, and the friction roller 15 is axially supported by a bearing member 29 on the lower surface near the tip of the lever base 23a. ing.

That is, as shown in FIG. 1 and FIG. 2, the detection roller 28 is located at the tip of the lever 23 straddling the two zones on the A zone side, and the friction roller 15 is located on the B zone side immediately after that.
The axis is supported for each zone.

Then, the lower surface on the terminal side of each lever base 23a and each mounting member 2
A coil spring 30 is stretched between the upper surfaces of the four and the lever 23 is constantly pushed up by the elastic force of the spring 30 to bring the friction roller 15 into contact with the drive shaft 13 and the transmission shaft 14. Then, the detection roller 28 arranged on the conveying surface of the conveyor
When a conveyed item comes into contact with and pushes it down,
The 23 is rotated downward against the elasticity of the spring 30 to release the contact between the friction roller 15 and the drive shaft 13 and the transmission shaft 14.

[Operation] Next, the operation of the conveyor of the present invention having the above-mentioned configuration will be described.

First, the drive mechanism is operated by an appropriate switching operation to rotate the drive shaft 13. Since the drive shaft 13 is connected to each transmission shaft 14 by each friction roller 15 and each transmission shaft 14 and the conveyance roller 12 are connected to each other by the round belt 22, the rotation of the drive shaft 13 is caused by the friction roller 15, Conduction axis
14, transmitted to the transport roller 12 via the round belt 22, and the transport roller 12 rotates in the luggage transport direction.

Then, for example, when the parcel that has moved on the conveyance surface comes into contact with the detection roller 28 projected in the conveyance roller zone B shown in FIG. 2 and presses it, the lever to which the roller 28 is attached is attached.
23 rotates downward with the pin 26 as a fulcrum against the elastic force of the spring 30. A friction roller 15 is attached to the lever 23 to connect the drive shaft 13 and the transmission shaft 14 disposed in the conveying roller zone C immediately after the lever 23, and the downward rotation of the lever 23 causes the friction roller 15 and the drive shaft 13 to rotate.
The connection of the transmission shaft 14 is released, the rotation of the rollers of the transport roller group C is stopped, and the load on the roller group C is stopped from traveling and is accumulated at the same position.

When the load G traveling on the roller zone B and pressing the detection roller 28 passes over the detector, the roller 28 and the lever are
23 is returned by turning upward by the restoring force of the spring 30,
At the same time, the friction roller 15 attached to the lever 23 comes into contact with the drive shaft 13 and the transmission shaft 14 arranged in the C zone, and the drive shaft 13
Is transmitted to the transport roller 12 in the zone C, the transport roller starts to rotate, and the accumulation rate is released.

It is needless to say that the present invention is not limited to the above-described embodiment, and various modifications and design changes can be made without departing from the spirit of the invention.

[Advantages of the Invention] Since the present invention has the above-described configuration, line pressure is not added to a conveyed object that is stopped and staying forward in the storage, and the conveyed object can be prevented from colliding and falling and can be reliably conveyed. It is possible to provide a simple conveyor. Moreover, since the accumulation rate mechanism that divides the transport rollers into zones and stops the rotation is adopted, it is not necessary to adjust the friction force of the drive ring for the accumulation rate, providing a conveyor with high driving force and transport force. You can do it.

[Brief description of drawings]

FIG. 1 is a partially omitted plan view showing an embodiment of the present invention,
FIG. 2 is a side view of the same, FIG. 3 is a view showing a mounting state of a drive shaft, a transmission shaft and a friction roller, and FIG. 4 is a side view of the friction roller. 10: Accumulate roller conveyor, 11: Frame, 1
2: Transport roller, 13: Drive shaft, 14: Conductive shaft, 15: Friction roller, 16, 20: Groove, 17: Connecting material, 18, 19: Bearing, 21: Drive ring, 22: Round belt, 23: Lever , 23a: lever base,
23b: Lever tip portion, 23c: Connecting member, 24: Mounting member, 25: Bracket, 26: Pin, 27, 29: Bearing member, 28: Detection roller, 30: Coil spring A, B, C ... Conveying roller zone

Claims (1)

[Scope of utility model registration request] 1. An accumulation rate conveyor in which a large number of conveying rollers are rotatably supported on an upper surface of a frame, and each of the rollers is rotated by a drive shaft rotatably supported on a lower surface of the frame in a direction orthogonal to the rollers. A plurality of conductive shafts corresponding to the transport roller zone are rotatably supported on the side of the drive shaft in parallel with the drive shaft, and each roller and the conductive shaft are connected by a belt. The drive shaft and the conductive shaft are connected to each other by a friction roller mounted on a lower surface of the frame and axially supported by a lever that is always urged upward. Accumulate roller conveyor mounted so as to project to the.