JPH07228323A - Conveyor belt - Google Patents

Abstract

PURPOSE:To correct width directional displacement of a conveyor belt by using a center shaft of rollers engaging with at least a lower part and a side part of the belt as a single common center shaft, and freely adjusting a lateral directional angle to the advancing direction of the conveyor belt of the center shaft. CONSTITUTION:When a belt 1 is displaced to the right side in the width direction notwithstanding a center shaft 4 is put in an almost orthogonal condition to the advancing direction of the belt 1, the center shaft 4 is adjusted so as to be placed at a slightly leftward inclined angle more than the advancing direction of the belt 1. Thereby, since the rightward displaced belt 1 must turn in the leftward direction by rolling friction with rollers 3 engaging with this, rightward displacement is corrected, so that it returns to a normal position in the width direction. In this way, width directional displacement of the belt 1 can be corrected by using the rolling friction of the belt 1 and the rollers 3 which engage with this and support this.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor belt for conveying powder, viscous material and the like.

[0002]

2. Description of the Related Art A conveyor belt 1 engages with a drive pulley 2 at both ends as shown in FIG. 1 (a), and as shown in FIG. 1 (b) at a position close to the engaged both ends. To
As shown in FIG. 1C, at the central part of the position where it is engaged reversely and has a shape close to a substantially planar shape, as shown in FIG.
It has a substantially cylindrical shape, and the transported object can be stably transported without leaking to the outside in the cylindrical shape.

However, in such conveyance by the conveyor belt 1, the weight distribution of the conveyed object is unbalanced, the rotational friction of each roller 3 supporting the belt 1 is different, and the tension of the belt 1 in the width direction is not balanced. As shown in FIGS. 2A, 2 </ b> B, and 3 </ b> C, the belt is often displaced (rolled) in the cross-sectional direction due to the adjustment, and in particular, the upper belt supporting the transported object. 1
This tendency is remarkable in (in Fig. 2,
Illustration of the rollers that engage with the belt is omitted. ). Such a deviation in the cross-sectional direction may cause local stress to the belt 1 and eventually cause local damage to the belt 1. In particular, when the belt 1 made of a synthetic resin used for transporting food is used, the above-mentioned local damage is remarkable, and this may significantly shorten the life of the belt 1.

Therefore, the conventional conveyor belt 1
On the other hand, there has not been proposed an active constitution for improving and overcoming such a point.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a structure capable of correcting such deviation in the sectional direction of a conveyor belt.

[0006]

In order to solve the above-mentioned problems, the structure of the present invention has a structure in which drive pulleys at both ends are bridged,
In a conveyor belt that is held at each position by a plurality of engaging rollers and a part of the cross-linked portion forms a substantially cylindrical shape, among the belts located above and below, at least for the upper belt, each position In the plurality of rollers held in, the central axis of at least the roller that engages the lower side of the belt is one common central axis, and the central axis of the central axis in the left-right direction with respect to the traveling direction of the conveyor belt. Consists of a conveyor belt with adjustable angle.

[0007]

The operation principle of the present invention will be described below.

As shown in FIG. 3 (a), the belt 1 is displaced to the right in the width direction, even though the central axis 4 is substantially orthogonal to the traveling direction of the belt 1. In this case, as shown in FIG. 3B, the central axis 4 is adjusted so as to form an angle (counterclockwise angle) inclined to the left of the traveling direction of the belt 1.

As a result, the belt 1 which is displaced to the right side
Is forced to face the left side due to the rotational friction with the roller 3 engaged with it, the deviation to the right is corrected as shown in FIG. It will return to the correct position.

In FIGS. 3 (a), 3 (b) and 3 (c), almost all of the roller 3 and the central shaft 4 are indicated by dotted lines.

That is, the present invention utilizes the rotational friction between the belt 1 and the roller 3 that engages with and supports the belt 1 to correct the lateral deviation of the belt 1.

[0012]

[Embodiment 1] In order to make such an angle of the central shaft 4 adjustable, in the first embodiment, as shown in FIGS. 4A and 4B, a handle stretched from the central shaft 4 is It is fitted into both side grooves 51 provided in the fixed frame 5, whereby the angle of the central shaft 4 can be adjusted.

The both-side groove 51 may have a substantially straight shape or a substantially arc shape, but when the angle of the central axis 4 is adjusted, both ends inevitably make an arc motion.
As shown in (b), the substantially arcuate side grooves are more convenient for angle adjustment.

[0014]

Second Embodiment Regarding the direction of the pressing roller 31 at the top for correcting the deviation of the belt 1 in the cross-sectional direction,
A theoretical mathematical formula does not immediately exist, and how much the angle of the top pressing roller 31 should be changed with respect to a predetermined deviation must be determined by accumulating empirical rules.

However, if the direction of the central axis 4 is manually displaced relative to the displacement of the conveyor belt 1, the operation is extremely complicated.

In the second embodiment, the detector 6 for detecting the deviation of the central axis 4 in the cross-sectional direction and the adjuster 7 for adjusting the direction of the central axis 4 are set, and the deviation detected by the detector 6 is set. A configuration for adjusting the angular deviation by the adjuster 7 according to the degree is shown.

As a result, the deviation of the conveyor belt 1 is automatically corrected.

[0018]

With the configuration of the present invention as described above, it is possible to correct the deviation of the conveyor belt.
The present invention makes a great contribution to the technical field of conveyor belts.

[Brief description of drawings]

1 (a), (b), (c): Lateral cross-sectional view and vertical cross-sectional view showing the basic configuration of a conveyor belt.

2 (a), (b), and (c): cross-sectional views showing a normal position of the conveyor belt and a state of being displaced in the left-right direction.

3 (a), (b) and (c): top view The principle of operation of the present invention is shown.

4A and 4B are a top view and a side sectional view showing the configuration of the first embodiment.

5 is a side view showing the configuration of Example 2 (note that a plurality of dots at one end of the belt indicate a state in which the luminescent paint is sprayed).

[Explanation of sign]

1: Conveyor belt 2: Drive pulley 3: Roller 31: Roller that presses the top of the conveyor belt having a cylindrical cross section 4: Rotation center axis 5: Fixed frame 51: Groove 6: Detector 7: Adjuster

Claims (3)

[Claims] 1. A conveyor belt, which is bridged to drive pulleys at both ends, is held at each position by a plurality of engaging rollers, and a part of the bridged part has a substantially cylindrical shape, and is positioned above and below. Of the plurality of rollers held at each position with respect to at least the upper belt of the belt, the central axis of at least the roller that engages with the lower side of the belt is one common central axis, A conveyor belt in which the angle of the central axis in the left-right direction with respect to the traveling direction of the conveyor belt is adjustable. 2. The conveyor belt according to claim 1, wherein a handle stretched from the central axis is fitted in both side grooves of the fixed frame. 3. A center axis engaging direction adjuster and a detector for detecting deviation of the cross section of the roller are provided, and the output amount of the detector is input to the adjuster to automatically cause the deviation. The conveyor belt according to claim 1, wherein the conveyor belt is corrected.