JPH05124715A - Automorphic roller device for belt conveyor - Google Patents

Abstract

PURPOSE:To prevent the biting of a belt side end edge section into roller gaps due to a twist and the like by using auxiliary rollers in the automorphic roller device of a belt conveyor circularly arranged with multiple rollers. CONSTITUTION:Rollers 11, 12, 13, 14, 15, 16 are circularly arranged on a fitting frame 10 guiding a tubular belt 6 so as to circumscribe on the belt 6. Auxiliary rollers 23, 24 are arranged so that the side end section is overlapped in the center axis direction of the belt 6 on the rollers 11, 12 and 12, 16 forming the gaps 25, 30 expected to bite the side end edge section 6a of the belt 6 among the gaps 25, 26, 27, 28, 29, 30 in the peripheral direction formed between the circularly arranged rollers to close the gaps 25, 30, and the biting of the side end edge section 6a of the belt 6 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shape-conveying roller for guiding an endless belt in a predetermined path while maintaining the shape of the tube in a belt conveyor in which a load is conveyed in an enclosed state. It relates to the device.

[0002]

2. Description of the Related Art A belt conveyor, in which an endless belt is driven and circulated in one direction, is rolled in a tubular shape at least in a load carrying section to carry a load in a sealed state, is generally known as a pipe conveyor. Therefore, it is said that it is possible to carry a parcel, especially a large amount of powdery or granular material, without spilling the cargo.

The belt is wound around a drum at the front and rear ends of the installation section and circulates in a forward path and a backward path, and is wound around the rear end drum in a flat shape and is guided by a guide roller when entering a forward path which is a load carrying section. It is deformed into a tubular shape from a flat shape through a gutter shape, and is guided along a predetermined path and moved toward the drum at the tip end while maintaining the shape of the tube by the shape-retaining roller device arranged at appropriate intervals in the outward path. The load is placed on the belt at the portion deformed into a gutter shape, and is discharged from the belt when it is turned over by the drum at the tip.

The shape-retaining roller device functions to support a load and maintain the shape of the tube by circumscribing a plurality of rollers arranged in a circle on a belt which is rolled into a tubular shape at substantially equal intervals in the circumferential direction. And the Japanese Patent Publication Sho 43-
As disclosed in Japanese Laid-Open Patent Publication No. 22698 and Japanese Patent Publication No. 1-46404, a plurality of rollers are arranged in a circle on one plane orthogonal to the belt and mounted on a mounting frame.

However, there is an unavoidable gap between the rollers adjacent to each other in the circumferential direction in order to prevent the rollers from interfering with each other and to secure an installation space for the bearing piece supporting the rollers. .

On the other hand, the tubularly rolled belt moves along the path defined by the shape-maintaining roller device arranged at appropriate intervals, and at that time, it moves while pitching, rolling, twisting, and further vibrating. In particular, due to twisting, the seams on both side edges of the belt are easily displaced or opened. In particular, if lateral vibration, twisting, or vibration occurs in the direction in which the front belt-side edge of the seam shifts outward, this side edge is caught in the gap between the adjacent rollers when passing through the mounting frame. It may end up. FIG. 4 shows the situation. When the belt B rolled into a tubular shape is inscribed in the rollers R arranged at equal intervals in the circumferential direction on one plane orthogonal to the belt B, the belt B moves laterally. The side edges thereof are caught in the gap between the adjacent rollers R due to shaking or the like.

In such a state, the belt B collides against the end edge of the roller R and is damaged, the seam opens to spill luggage or rainwater, and resistance increases to increase the driving force of the belt. Overload may cause malfunctions,
It causes such troubles.

Further, when carrying a considerably heavy load, it is necessary to arrange the shape-maintaining roller devices at considerably short intervals, and when carrying a long distance, a large number of shape-maintaining roller devices are installed. As a result, the chances of the above troubles increasing.

Therefore, similar shape-keeping roller devices are arranged side by side adjacent to the conventional shape-keeping roller device, and the rollers of the two shape-keeping roller devices are positioned in a gap between each other and viewed in the direction of the central axis of the belt. It is disclosed in Japanese Utility Model Publication No. 61-24493 that the side edge portions of the seam of the belt are prevented from being caught by arranging them so that they are in a crossed state.
Since the two shape-keeping roller devices in which a plurality of rollers are arranged in a circle in the mounting frame are arranged side by side so that the rollers of each shape-keeping roller device are in a staggered state when viewed from the front, Not only is the structure extremely complicated, but it is economically extremely disadvantageous to install two shape-maintaining roller devices side by side, because the equipment cost will rise significantly.

[0010]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide a shape-maintaining roller device in which a plurality of rollers are arranged in a mounting frame that allows an endless belt to pass through, at least at appropriate intervals in a load carrying section. , In a belt conveyor that conveys a bag in a sealed state by maintaining the belt in the shape of a tube by these shape-maintaining roller devices, the side edge of the seam of the belt is caught in the gap between the adjacent rollers by twisting or the like. There is no simple, effective and economical shape-retaining roller device.

[0011]

SUMMARY OF THE INVENTION According to the present invention, an endless belt is rolled into a tubular shape, and a plurality of rollers circumscribed on the tubular belt are attached to a mounting frame through which the belt is passed in order to convey the luggage in an enclosed state. In the shape retaining roller device of the belt conveyor arranged in a circular shape, auxiliary rollers are attached to the attachment frame, and the auxiliary rollers are formed between the rollers arranged in a circular shape in the circumferential direction of each other. Within the gap,
The problem is solved by the means that the side end portions are arranged on the roller forming a gap where the side end edge portion of the belt is expected to be caught so that the side end portions are overlapped with each other when viewed in the direction of the belt center axis. The object of the present invention is to provide a simple, effective and economical shape-retaining roller device that prevents the belt-side end edge from being caught in the roller gap due to the above.

[0012]

When the tubularly rolled belt moves while passing through the shape-retaining roller device, the belt is supported by the group of rollers arranged in a circle on one surface of the mounting frame in one shape-retaining roller device. To be done. Among these roller groups, the gap formed by the rollers adjacent to each other at the side edge portion of the belt, which is expected to be caught, is closed by the auxiliary roller arranged on the other surface of the mounting frame. It will pass without causing.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of an entire belt conveyor, in which drive drums 1 and driven members arranged at both front and rear ends of an installation section are driven. An endless belt 5 is wound around the drum 2, and the belt 5 is extended in a flat shape at the winding portion around each of the drums 1 and 2, but at the other forward and backward portions. The guide rollers for focusing, which are not shown, arranged at the respective inlets are transformed into a tubular shape through a trough shape, and the shape-maintaining roller device provided on the support frame 8 maintains the tubular shape and moves the respective outlets. The operation of being flattened by a not-shown extension guide roller provided in the above is repeatedly circulated. Luggage is continuously loaded from the hopper 3 at the trough-shaped portion of the entrance portion of the forward path, that is, the luggage transport section, and is discharged when being inverted by the driving drum 1 at the tip and enters the load box 4.

The support frames 8 are arranged at appropriate intervals in the moving direction of the belt 5, and the shape-maintaining roller device according to the present invention for maintaining the forward pipe portion 6 and the backward pipe portion 7 in predetermined pipe shapes, respectively. Although it is provided on the upper and lower sides, the shape-retaining roller device for the lower return pipe portion 7 is composed of a plurality of rollers on one plane as shown in Japanese Patent Publication Nos. Sho 43-22698 and Hei 1-446404. May be arranged in a circle.

2 and 3 show an embodiment of the shape-retaining roller device for supporting the upper tube portion 6 according to the present invention. That is, a plate-shaped mounting frame 10 having an opening 9 centered on the central axis for passing the pipe portion 6 is arranged on a surface perpendicular to the central axis and fixed to the support frame 8, and Bearing pieces 17, 18, 19, 2 in which six rollers 11, 12, 13, 14, 15, 16 are fixed to the mounting frame 10 on the front surface 10a in the moving direction of the pipe portion 6.
The shafts 0, 21 and 22 are rotatably supported by the shafts and are arranged along the opening 9 at equal intervals in the circumferential direction.

Further, two auxiliary rollers 23, 24 are arranged on the front surface 10b in the moving direction of the pipe portion 6 of the mounting frame 10 so that both side end portions are circularly arranged.
Gap 25, 26, 27, 28, 2 formed between 6
Among the rollers 9 and 30, the rollers 11, 12 and 12, 16 forming the gaps 25 and 30 in which the side edge portion 6a of the belt 6 is expected to be caught are overlapped with each other when viewed in the belt center axis direction. It is arranged.

Therefore, when the pipe portion 6 is twisted and the side edge portion 6a on the front side of the joint is displaced outward, FIG.
Since there is no gap in the circumferential direction between the rollers 11, 12 and 12, 16 in FIG.

Since the belt 5 is rounded into a tubular shape by bending both side edge portions upward at the entrance of the outward path, the seam is located at the top, and therefore the belt 5 is generally located in the upper half portion where the seam exists. It suffices to arrange an auxiliary roller to close the gap.

In this embodiment, the pipe portion 6 of the mounting frame 10 is also used.
16 are arranged in a circular shape on the front surface 10a toward the moving direction of the rollers and the rollers 23, 24 are arranged on the rear surface 10b.
The arrangement is such that the rollers 11 ... 1 are attached to the mounting frame 10.
6 and the auxiliary rollers 23 and 24 for closing the gaps 25 and 26 between the rollers 11 ... 16 may be attached. For example, one or both of them are attached to the inner peripheral surface of the opening 9 of the attachment frame 10. Good.

[0020]

According to the present invention, a plurality of rollers are arranged in a circular shape on the mounting frame, and the auxiliary roller is provided with a gap formed between the plurality of rollers arranged in a circular shape. The part where the seam of the belt moves by arranging the side ends of the roller so as to overlap with each other when viewed in the direction of the belt center axis, and forming a gap in which the side edge of the belt is expected to be bitten. Even if the side edge of the seam of the belt is displaced outward due to a twist or the like, there is no gap in the circumferential direction, and the belt passes without causing any biting.
Therefore, the baggage can be smoothly transported without causing troubles such as damage to the belt, spillage of rainwater, intrusion of rainwater, and overload.

Further, it is possible to expect an effect that the mounting frame for mounting the rollers is one and the number of the rollers is required to be the minimum, so that the structure is not complicated and the equipment cost is not soared.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an example of a belt conveyor.

FIG. 2 is a side view showing an embodiment of the shape-retaining roller device of the present invention.

FIG. 3 is a view on arrow AA of FIG.

FIG. 4 is a schematic front view showing an example of a conventional shape-retaining roller device.

[Explanation of symbols]

 5 belt 8 support frame 10 mounting frame 11, 12, 13, 14, 15, 16 roller 23, 24 auxiliary roller 25, 26, 27, 28, 29, 30 gap

Claims (1)

[Claims] 1. A belt conveyer in which a plurality of rollers circumscribing the tubular belt are arranged in a circle in a mounting frame through which the endless belt is rolled into a tubular shape to convey the luggage in a sealed state. In the shaped roller device, an auxiliary roller is attached to the attachment frame, and the auxiliary roller is configured so that the auxiliary roller of the belt is formed in a circumferential gap formed between the rollers arranged in the circular shape. A shape-maintaining roller device for a belt conveyor, characterized in that the side edges are arranged in a roller forming a gap in which the side edge portions are expected to be caught, and the side edges overlap each other when viewed in the belt center axis direction.