JP2688806B2 - Conveyor belt - Google Patents

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 in the width direction of the belt 1 is not uniform. As shown in FIGS. 2 (a), 2 (b), and 2 (c), the
The belt often deviates (rolls) in the cross-sectional direction, and in particular, at the stage where the belt is separated from both ends engaged with the drive pulley 2 and has a substantially cylindrical shape, the upper belt that supports the transported object. 1 shows such a tendency (note that the rollers engaging with the belt are not shown in FIG. 2). Such a deviation in the cross-sectional direction is
This may cause local stress to the belt 1 and eventually damage the belt 1 locally.
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. By the way, for example, Jpn.
No. 4891 (Japanese Utility Model Laid-Open No. 58-106315) discloses a micro film having a substantially V-shaped cross section with a conical roller having an annular groove and a center of the support roller supporting shaft which is orthogonal to the belt transfer center line. Although a configuration in which the support frame is provided so as to be free to rotate around the line is described, this discloses a technique that uses a special type of roller and is applicable when the conveyor belt has a pipe shape. is not. On the other hand, Jpn. Pat. Appln.
No. 19223), the CD-ROM describes that each roller is coupled by fitting a bearing piece of the roller into a groove hole of a bracket to thereby adjust the angle of each roller in the left-right direction. However, since the angle in the traveling direction of the conveyor belt is adjusted, the angle is adjusted for the entire roller to efficiently correct the deviation in the cross-sectional direction of the conveyor belt.

[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 has a part of a crosslinked portion forming a substantially cylindrical shape, among the belts positioned above and below, at least for the upper belt, the above-mentioned The central axis of the rollers engaged with the lower portion, the side portion and the upper portion of the belt forming the cylindrical shape is one common central axis, and the angle of the common central axis in the left-right direction with respect to the traveling direction of the conveyor belt is set. The conveyor belt is characterized in that, in order to be adjustable, a handle stretched from a common central axis is fitted in both side grooves of the fixed frame.

[0007]

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

As shown in FIG. 3A, the common central axis 4
However, when the belt 1 is deviated to the right side in the width direction in spite of being in a state substantially orthogonal to the traveling direction of the belt 1, as shown in FIG. 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 common central axis 4 are indicated by dotted lines.

That is, according to the present invention, the deviation in the width direction of the belt 1 is corrected by utilizing the rotational friction between the belt 1 and the roller 3 engaged with and supporting the belt 1. As described in the section of means for solving the above problem, the central axis of the roller is one common central axis, and the handle stretched from the common central axis is fitted into both side grooves of the fixing frame, whereby the belt With respect to all the rollers engaged with the lower part, the side part and the upper part, the basic feature is that the angle in the left-right direction with respect to the traveling direction of the conveyor belt is adjusted.

The conveyor belt forms both an upper side that conveys powder and a viscous material, and a lower side that does not convey these. The tensioning according to the present invention can be performed at both upper and lower sides. To do, or at least to do at the top.

In order to make the angle of the common central axis 4 adjustable as described above, in the present invention, in order to perform the adjustment as described above, the handle stretched from the common central axis is fitted into both side grooves of the fixed frame. The above adjustment is easily performed.

[0014]

EXAMPLE FIGS. 4A and 4B show an example of the handle and the fixing frame. As shown in FIGS. 4 (a) and 4 (b), in this embodiment, the handle stretched from the common central shaft 4 is fitted into the both side grooves 51 provided in the fixed frame 5, whereby the common central shaft 4 is engaged. When the angle of 4 is adjustable, the both side grooves 51 are adopted in a substantially arc shape.

Originally, when the angle is adjusted by using both ends of the common central axis 4, both ends inevitably make an arc motion.
As shown in FIG. 4B, it is convenient to adjust the angle by adopting substantially arcuate side grooves.

[0016]

The structure of the present invention as described above can correct the deviation of the conveyor belt. Moreover, since all the rollers contribute to the angle adjustment in the lower part, the side part and the upper part of the conveyor belt, stable angle adjustment is possible and a conical roller having an annular groove as in the case of the prior art is used. There is no need. As described above, the present invention makes a great contribution to the technical field of conveyor belts.

[Brief description of the drawings]

1 (a), (b), and (c): a horizontal sectional view and a vertical sectional view showing a basic configuration of a conveyor belt.

2 (a), (b), (c): 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 showing the principle of operation of the present invention.

4 (a), (b): Top view and side sectional view Example 1
Is shown.

[Explanation of symbols]

1: Conveyor belt 2: Drive pulley 3: Roller 31: Roller that presses the top of the conveyor belt having a cylindrical cross section 4: Common central axis 5: Fixed frame 51: Groove

Claims (2)

(57) [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 at least the upper belt, the central axis of the rollers engaged with the lower portion, the side portion and the upper portion of the belt forming the substantially cylindrical shape is one common central axis, and the common center is A conveyor belt characterized in that a handle stretched from a common central axis is fitted in both side grooves of a fixed frame so that the angle of the shaft in the left-right direction with respect to the traveling direction of the conveyor belt can be adjusted. 2. The conveyor belt according to claim 1, wherein both side grooves are designed to have a substantially circular arc shape, and a handle stretched from a common central axis is rotationally moved in a substantially circular arc shape.