JPH07172528A - Pressure roller conveyor - Google Patents

Abstract

PURPOSE:To provide a new pressure roller conveyor which can transmit driving force at high torque by use of a teethed belt, can start and stop at high frequency, and reduce operation sound to realize low sound. CONSTITUTION:A partially toothed belt 2 which has a toothed section and a non-toothed flat section is provided in circulation along the longitudinal direction as an endless belt for driving a roller. A pulley 4 of drive system which drives the partially toothed belt 2 in circulation is used as a toothed pulley 3. A pressure pulley 6 which pressure-contacts and releases the belt for a roller 1 is used as a pressure pulley 6 which makes a part for the toothed section of the belt a recessed section to avoid mesh with the partially toothed belt 2 and makes it face-contact with the non-toothed flat section of the partially toothed belt 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention circulates an endless belt of a driving medium under a plurality of rollers arranged in parallel and presses the belt to rotate the roller or separate the roller from the roller. The present invention relates to a pressure roller conveyor in which the rotational driving force of a roller is released.

[0002]

2. Description of the Related Art Pressure roller conveyors of this type are known, which use chains or flat belts as drive medium.

[0003]

Known pressure roller conveyors that use a chain as a drive medium have a problem that the operating noise of the chain is high and produces noise. Further, in the case of chain drive, there is a problem that regular lubrication is necessary. On the other hand, the one that uses a flat belt as the drive medium has the advantages that it does not require oiling and does not generate noise, unlike the chain drive, but slippage occurs between the belt and the roller, so high torque Inability to transmit driving force, high frequency of starting,
There is a problem that it cannot be stopped. In view of such problems of known pressure roller conveyors, the inventors have considered using a toothed belt and a toothed pulley,
An experiment was conducted using a toothed pulley as the pressure pulley. When this toothed belt and toothed pulley are used, a high torque driving force can be transmitted and a high frequency of starting and stopping can be obtained, which is effective, but the tip of the toothed belt taps against the toothed pressure pulley. Was generated, resulting in noise. In view of the above-mentioned problems, the present invention is capable of transmitting high-torque driving force using a toothed belt, enabling high-frequency start and stop, and reducing the operating noise to provide a novel pressure with low noise. An object is to provide a roller conveyor.

[0004]

Therefore, in the present invention, as an endless belt for driving a roller, a partially toothed belt having toothed portions and toothless flat portions is circulated along the longitudinal direction thereof, A drive system pulley that circulates and drives the partially toothed belt is a toothed pulley, and a pressure pulley that presses and separates the belt from the roller is a partially toothed belt that has a recessed portion for the toothed portion of the belt. It is characterized in that it is a pressure pulley which does not mesh with the toothed belt and is in surface contact with the non-toothed portion of the toothed belt. In the partially toothed belt, it is preferable that the central portion of the belt is a toothed portion and both side portions of the belt are toothless portions, and the central portion of the pressure pulley is a recess that receives the toothed portion of the belt.

[0005]

[Function] The pulley of the belt drive system is a toothed pulley,
The belt is circulated by meshing with the toothed portion of the belt.
Therefore, the belt is surely circulated, the driving force of high torque is transmitted by the pressure contact of the pressure pulley with the roller, and the roller driving can be frequently started and stopped. In addition, since the pressure pulley and the partially toothed belt are in contact with each other in the toothless portion, a rattling noise is not generated in the toothed portion, and an operation with less noise can be obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the figure, reference numerals 1 and 1 are conveyor rollers which are installed in parallel on a parallel frame (not shown). An endless partially toothed belt 2 as a circulating drive belt is arranged below the roller so as to extend around a drive system pulley. The pulleys of this drive system are toothed pulleys 3 and 3, and the drive motor 5
It is circulated by an attached drive pulley 4.
In the figure, 6 and 6 are arranged immediately below the rollers 1 and 1, and the roller 1
A pressure pulley in which a toothed belt 2 is partially interposed between the belt 2 and the roller 2 and is moved up and down by the operation of a cylinder 7 to press and separate the belt 2 to and from the roller 1.

As shown in FIGS. 2 to 4, the partially toothed belt 2 has toothless flat portions 8 and 8 on both sides thereof, and teeth 9 and 9 provided at an intermediate portion to form a toothed portion 10. . Therefore,
The pressure pulley 6 has the belt 2 at the center thereof.
Corresponding to the toothed portion of the concave portion 11 to receive this,
Pressure contact part 1 that contacts both sides of the toothless flat part 8 of the belt 2
2 and 12. The toothed portion of the belt is not necessarily the center portion of the belt, but may be the both side portions. In that case, the toothless portion may be the center portion of the belt.

In the pressure roller conveyor of the present invention having the above-mentioned structure, since the pulleys of the drive system for the partially toothed belt 2 are toothed pulleys 3 and 3, the drive motor 5 is used.
When is driven, high-torque driving force is transmitted to the belt 2. So, if you move the pressure pulley 6 up and down,
The belt 2 running on the roller 2 is pressed against and separated from the roller appropriately, and the roller is frequently started and stopped. The pressure pulley 6 and the partially toothed belt 2 are
Since the press contact portion 12 of the pulley 6 and the toothless portion of the belt come into contact with each other and the toothed portion 10 of the belt 2 is received in the recess 11 of the pulley 6, the tapping operation is performed between the pulley and the tooth 9 of the belt. No noise.

[0009]

As described above, in the pressure roller conveyor of the present invention, the belt is partly a toothed belt and the drive system pulley is a toothed pulley. It has the effect that torque power can be transmitted and high-frequency start and stop can be obtained. In addition, with the pressure pulley and toothed belt,
Since there is no meshing of the toothed portion, there is no knocking action of the teeth of the belt, and there is an effect that can be achieved with a low noise roller conveyor.

[Brief description of drawings]

FIG. 1 is a front view showing the outline of a pressure roller conveyor of the present invention.

FIG. 2 is an explanatory diagram showing a relationship between a pressure pulley and a partially toothed belt.

FIG. 3 is a side view of a partially toothed belt.

FIG. 4 is a sectional view of a partially toothed belt.

[Explanation of sign]

 1 Roller 2 Partially Toothed Belt 3 Toothed Pulley 4 Drive Pulley 5 Drive Motor 6 Pressure Pulley 7 Cylinder 8 Toothless Part 9 Tooth 10 Toothed Part 11 Recess 12 Pressing Part

Claims (2)

[Claims] 1. As an endless belt for driving a roller, a partially toothed belt having toothed portions and toothless flat portions is circulated along the longitudinal direction, and the partially toothed belt is circulatedly driven. The drive system pulley is a toothed pulley, and the pressure pulley that presses the belt into and out of contact with the roller is a recess for the toothed portion of the belt so that it does not partially mesh with the toothed belt. A pressure roller conveyor characterized by being a pressure pulley that is in surface contact with a non-toothed portion of a partial toothed belt. 2. The partially toothed belt, wherein the central portion of the belt is a toothed portion and both side portions of the belt are toothless portions, and the central portion of the pressure pulley is a recess for receiving the toothed portion of the belt. The pressure roller conveyor according to claim 1, which is provided.