JP2590377Y2 - Pipe conveyor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a belt rolled in a pipe shape of a pipe conveyor from being biased.

[0002]

2. Description of the Related Art An endless belt is rolled into a pipe shape,
2. Description of the Related Art Pipe conveyors that transport an object by enclosing the object therein can be prevented from dropping and scattering of the object, and are widely used in recent years. In such a pipe conveyor, FIG.
As shown in FIG. 1, shape retaining roller sets 2 for holding the belt 1 in a pipe shape are arranged at predetermined intervals in the running direction of the belt.

In general, as shown in FIG. 4, a plate holding roller 5 is provided with a plate 5 provided with a circular hole 4 and a bracket 6 is fixed to the plate 5 with a circular hole 4 as shown in FIG.
And a plurality of guide rollers 7 attached to the bracket 6 face the circular hole 4 to hold the belt 1 in a pipe shape. (Actual 4-1
No. 21913).

[0004]

However, in the conventional pipe conveyor, the shape-retaining roller set having the same structure is arranged over almost the entire length of the conveyor. Therefore, in a conveyor having a long machine length, the belt may be biased. is there. In particular, if the transport path is bent left and right, the belt tends to be biased at the bent part, and the overlap end of the belt moves right and left off the center of the conveyor, and the overlap end is moved to the upper guide roller. Can not be held down properly,
There is a risk that the transported object may leak.

An object of the present invention is to solve such a problem in a pipe conveyor, and an object of the present invention is to provide a pipe conveyor capable of preventing the belt from being biased and holding the belt at the center.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a pipe conveyor having an endless belt and a plurality of shape-retaining roller sets arranged at predetermined intervals in a running direction of the belt and holding the belt in a pipe shape. , The shape-retaining roller set is composed of a pair of plates provided on the left and right sides of the belt, left and right guide rollers attached to the belt side of this plate, and guide rollers provided above and below the center of the belt,
The above problem is solved by attaching at least one of the upper and lower guide rollers to a pair of support members extending in parallel with the running direction of the belt and connected to each other by a link so as to be able to move relatively back and forth.

[0007]

In the pipe conveyor, the belt is rolled and held in a pipe shape by a shape keeping roller set, and the conveyed object is wrapped inside and conveyed. At least one of the upper and lower guide rollers is attached to a pair of support members extending parallel to the traveling direction of the belt, and the pair of support members are moved in the front-rear direction to move the guide rollers in the belt travel direction. The angle to the direction can be changed. Therefore, at a place where the belt is skewed, the angle of the guide roller with respect to the belt running direction is adjusted to correct the skew of the belt and maintain the center.

[0008]

1 is an explanatory view of a pipe conveyor according to an embodiment of the present invention. Here, the pipe conveyor is an endless belt 1 like the conventional conveyor shown in FIG.
And a plurality of shape keeping roller sets 2 arranged at predetermined intervals in the running direction of the belt and holding the belt 1 in a pipe shape. The belt 1 is stretched endlessly between a head pulley (not shown) and a tail pulley (not shown). Then, after the object is discharged from the head pulley, the return side returns to the tail pulley.

The shape retaining roller set 2 includes a pair of left and right plates 5L, 5R attached to the conveyor frame 3, and a bracket 6 provided on the belt 1 side of the plates 5L, 5R.
L, 6R and guide rollers 7T, 7B provided above and below the center of the belt 1. The lower guide roller 7B directly attaches the bracket 6B to the conveyor frame 3.

A pair of support members 8L, 8R extend in parallel with the running direction of the belt 1 between the plates 5L, 5R above the belt 1. These support members 8L, 8R
Link 10 attached to conveyor frame 3 by support shaft 9
Are pivotally mounted on the pin 11 so as to be relatively movable back and forth. The upper guide roller 7T is provided with the support member 8L,
8R.

Each of the shape-retaining roller sets 2 arranged on the conveying path of the pipe conveyor moves the pair of support members 8L and 8R relatively back and forth in accordance with the conditions of each installation location, and then links the link 10 with the support shaft 9. By fixing the belt, a predetermined angle is set with respect to the belt traveling direction of the upper guide roller 7T to correct the bias of the belt. For example, at a place where the belt 1 is deviated to the left, the left support member 8L is moved forward, the right support member 8R is moved backward, and the guide roller 7T
Is adjusted rightward with respect to the belt running direction, the belt 1 is corrected to return to the right side, and is held at the center. A greater correction effect can be obtained by arranging a plurality of upper guide rollers 7T on the support members 8L and 8R at arbitrary intervals.

FIG. 2 is an explanatory view of another embodiment of the present invention. In this embodiment, the upper guide roller 7T has a bracket 6T attached to the conveyor frame 3, and the lower guide roller 7B is connected to the lower plate 5L of the belt 1,
It is attached to a pair of support members 8L and 8R provided between 5R. Other structures are the same as those in FIG. Both the upper and lower guide rollers 7T, 7B can be attached to the support members 8L, 8R.

[0013]

As described above, the pipe conveyor of the present invention can change the angle of the guide roller with respect to the running direction of the belt simply by moving the pair of support members relatively back and forth, and can easily reduce the bias of the belt. It can be prevented and held in the center.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a pipe conveyor according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a pipe conveyor according to another embodiment of the present invention.

FIG. 3 is an explanatory view of a conventional pipe conveyor.

FIG. 4 is an explanatory view of a conventional shape roller set of a pipe conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Belt conveyor 2 Shape keeping roller set 3 Conveyor frame 5L plate 5R plate 6L bracket 6R bracket 6T bracket 6B bracket 7L Guide roller 7R Guide roller 7T Guide roller 7B Guide roller 8L Support member 8R Support member 9 Support shaft 10 Link 11 pin

Claims (1)

(57) [Scope of request for utility model registration] 1. A pipe conveyor comprising: an endless belt; and a plurality of shape-retaining roller sets that are arranged at predetermined intervals in a running direction of the belt and hold the belt in a pipe shape. , A pair of plates provided on the left and right sides of the belt, left and right guide rollers attached to the belt side of the plate, and guide rollers provided above and below the center of the belt, at least one of the upper and lower guide rollers A pipe conveyor extending parallel to the running direction of the belt and attached to a pair of support members connected by links so as to be able to move back and forth relative to each other.