JPH0672525A - Belt conveyor meandering regulator - Google Patents

Abstract

PURPOSE:To provide a simple, less expensive and quiet belt conveyor meandering regulator capable of carrying out meandering regulation of the belt of a belt conveyor used for cooling, drying and other by motive power of a motor instead of manually and remote control and automatic regulation without imposing a burden on an operator. CONSTITUTION:By installing a screw shaft of a ball screw 3 on at least one drum bearing 2 of a belt conveyor and moving the drum bearing 2 by forward screwing of this ball screw 3, meandering of a belt is regulated. Forward screwing of the ball screw 3 is carried out by motive power of a motor 9 through a chain 5 connecting a sprocket 4 provided on the ball screw 3 and a sprocket 11 provided on a drive shaft of a decelerator 10 to decelerate the motor 9. As both of the sprockets 4, 11 relatively move by movement of the bearing 2 and prevent the chain 5 from slipping, a pillow unit 6 to axially support the screw shaft of the ball screw 3, the motor 9 and the decelerator 10 are placed on a common slide base 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor meandering adjuster. More specifically, the present invention is a belt conveyor used for cooling or drying,
Particularly, it relates to a meandering adjuster for a belt conveyor having a long span.

[0002]

2. Description of the Related Art Conventionally, as a means for cooling or drying a substance, a device for cooling or drying the substance while conveying the substance on a belt conveyor, for example, the device shown in FIGS. 6 and 7 is known. In the material cooling or drying apparatus using these belt conveyors, the belt conveyor itself is exposed to a thermal change applied to cool or dry the material or receives a load of the material during the material transport process. Then, these thermal changes or loads occur unevenly in the width direction of the belt, and particularly when the span of the belt conveyor is long, the deviation in the width direction of the belt due to the thermal changes or loads increases. . For this reason, the lengths in the belt advancing direction are different at the central portion and the side portions of the belt, and the belt conveyor meanders.

As a means for correcting these meanders, a manual meandering adjuster 15 illustrated in FIG. 6 is conventionally known. The meandering adjuster 15 is, for example, as shown in FIG.
The shaft of the drum 1 of the belt conveyor is received by a stretcher unit (product of NTN) 12, and one end of the drum shaft of the belt conveyor is moved back and forth by manually rotating the operating lever 13 provided on this stretcher unit 12. Adjust the belt tension by moving it to correct the meandering of the belt conveyor.

[0004]

However, this manual operation is disadvantageous in that it imposes a burden on the operator, the automatic adjustment cannot be performed, and the remote operation cannot be performed. Further, hydraulic control is also performed using EPC, but in this case, there are drawbacks such as oil leakage, high noise of the hydraulic pump, and high cost.

The present invention eliminates the above-mentioned drawbacks of the conventional manual meandering adjustment mechanism of a belt conveyor used for cooling or drying, and enables remote operation and automatic adjustment without burdening the operator. It is an object of the present invention to provide a belt conveyor meandering adjusting device which can be manufactured at a low cost and has a simple mechanism.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a conventional manual meandering adjusting mechanism, in which a stretcher unit for receiving a drum shaft is moved by an operating lever, instead of a manual operation, by rotating a ball screw provided on a drum bearing. The rotation of the ball screw is driven by a motor connected to a sprocket provided on the ball screw by a connecting chain for mechanization. At this time, a common slide base means is provided so that the motor can follow the movement of the drum bearing. Then, on this common slide base, the pillow unit and the motor that pivotally support one end of the ball screw on the opposite side to the bearing side are placed, and the motor is moved in conjunction with the movement of the sprocket by the rotation of the ball screw, and the connection Prevent the chain from slipping.

There are two drum bearings on the driving drum side and two on the non-driving drum side, but at least one portion on the non-driving side may be provided for adjusting the meandering. Since it is easier to adjust the meandering of the belt conveyor by lowering the moving speed of the drum bearing, a reducer is attached to the motor, and the driving force of the motor is applied to the connecting chain via the reducer.

Further, a sensor for detecting the deviation of the tension of the belt conveyor is provided, an automatic means for driving the motor to adjust the meandering according to a signal detected by the sensor is provided, and a remote operation means is provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Instead of the conventional manual meandering adjuster 15 arranged on the drum shaft of the non-driving drum 16 in the belt conveyor shown in FIGS. 6 and 7, the automatic meandering adjuster of the present invention shown in FIGS. Will be disposed on the drum shaft of the drum 1 of FIG. 1 corresponding to the non-driving drum 16 of FIG. 6, and the embodiment of the present invention will be described in more detail. The apparatus shown in FIGS. 6 and 7 is a belt conveyor for cooling resin such as phenol resin, and the belt is the steel belt 18. However, in the present invention, the material of the belt may be rubber type or metal type.

FIG. 1 is a plan view showing the outline of the automatic meandering adjuster of the present invention. One end of the rotating shaft of the ball screw 3 is fixed to the bearing 2 at one end of the drum shaft of the drum 1 of the belt conveyor, and the other end is pivotally supported by the pillow unit 6. The rotary shaft can rotate in the pillow unit 6, but is prevented from moving in the axial direction relative to the pillow unit 6. Ball screw 3
A sprocket 4 for connecting a motor 9 and a chain 5 is provided on the rotating shaft of the.

The moving speed of the drum bearing is 0.1 to 0.5 m
Since the low speed range of m / sec is easy to adjust meandering, the motor 9 is provided with a speed reducer 10 to reduce the rotation speed of the motor 9 to reduce the moving speed of the drum bearing to, for example, 0.2 mm / s.
It can be set to be ec. Another sprocket 1 for hanging the chain 5 is attached to the shaft of the speed reducer 10.
1 is set. Further, a linear guide 8 is provided in parallel with the moving direction of the bearing 2, and a common slide base 7 that can slide on the linear guide 8 is placed.
The pillow unit 6 supporting the ball screw shaft, the motor 9 and the reduction gear 10 are mounted and fixed. in this way,
Since the pillow unit 6 supporting the ball screw shaft, the motor 9 and the speed reducer 10 are mounted and fixed on the common slide base 7, the motor 9 and the speed reducer follow the movement of the drum bearing 2, that is, the movement of the sprocket 4. Since the machine 10, that is, the sprocket 11 moves in parallel and there is no relative movement between the sprocket 4 and the sprocket 11, the chain 5 connecting them does not come off.

The meandering adjustment of the drum bearing 1 by the motor 9 can be remotely controlled. 2 to 4 show an example of a meandering adjuster of a belt conveyor using a steel belt for cooling a resin such as phenol resin. The reference numerals shown in FIGS. 2 to 4 are the same as those in FIG.

Further, as will be described with reference to FIG. 6, in the present invention, a sensor 19 for detecting the deviation of the belt is provided in the vicinity of the belt, and in response to the signal from the sensor 19, the sensor is automatically operated. It is also possible to provide a control circuit for turning the power switch on and off to achieve automation. Of course, the present invention is not limited to the above examples. It goes without saying that various details are possible.

[0014]

As described above, in the belt conveyor meandering adjuster of the present invention, the ball screw provided on the drum bearing is rotated by the force of the motor to move the drum bearing, so that the operator is not burdened. Absent. The rotation speed of the motor can be reduced by a speed reducer, which reduces the moving speed of the drum bearing and facilitates the meandering adjustment of the belt conveyor. Also, since the pillow unit that supports the end of the ball screw attached to the drum bearing on the side opposite to the drum bearing and the motor and the reducer are mounted on the common slide base, the motor follows the movement of the drum shaft. The speed reducer can be translated, and there is no relative movement between the ball screw shaft and both sprockets provided on the rotary shaft of the speed reducer.
The chain that connects the two will not come off.
Can be operated stably for a long time. Furthermore, by detecting the deviation of the belt conveyor with a sensor, remote operation and automation can be achieved. As described above, the mechanism of the present invention is simple and inexpensive, and is silent because no hydraulic pump is used.

[Brief description of drawings]

FIG. 1 is a plan view showing an outline of a belt conveyor meandering adjuster of the present invention.

FIG. 2 is a side view of an embodiment of the belt conveyor meandering adjuster of the present invention.

FIG. 3 is a front view of an embodiment of the belt conveyor meandering adjuster of the present invention.

FIG. 4 is a partial plan view of an embodiment of the belt conveyor meandering adjuster of the present invention.

FIG. 5 is a perspective view showing an outline of a meandering adjuster for a belt conveyor of a conventional device.

FIG. 6 is a partial side view on a feeder side of a belt conveyor for cooling phenolic resin and the like.

FIG. 7 is a partial side view on a discharger side of a belt conveyor for cooling phenolic resin and the like.

[Explanation of symbols]

 1 drum 2 bearing 3 ball screw 4 sprocket 5 chain 6 pillow unit 7 common slide base 8 linear guide 9 motor 10 speed reducer 11 sprocket 12 stretcher unit 13 operating lever 14 belt 15 manual meandering adjuster 16 non-driving drum 17 feeder 18 steel Belt 19 Sensor 20 Drive drum 21 Discharger 22 Water tank

Claims (3)

[Claims] 1. A moving means for moving at least one drum bearing, which axially supports a drum of a belt conveyor, back and forth in a belt length direction, a transmitting means for transmitting a moving force to the moving means, and a transmitting means. And a power means for urging a moving force to the moving means, and a shaft support portion on the opposite side of the drum bearing of the moving means and the power means are mounted on a common slide base. Adjuster. 2. The moving means comprises a ball screw having one end of the shaft supported by a drum bearing and the other end supported by a pillow unit, and the transmitting means is provided by a sprocket provided on the shaft of the ball screw and a shaft of the power means. 2. The belt conveyor meandering adjuster according to claim 1, comprising a sprocket and a chain connecting the sprockets, and the power means is a motor and a speed reducer. 3. A sensor is provided in the vicinity of the belt of the belt conveyor to detect the deviation of the belt, and a control means is provided for turning on / off the power switch of the power means according to the output signal of the sensor. Alternatively, the belt conveyor meandering adjuster according to claim 2.