JPH02193803A - Belt conveyer - Google Patents

Abstract

PURPOSE:To restrain the generation of heat in a flat belt conveyer in which a flat belt is wound around upper and lower inclined rollers so as to change the running direction thereof, by arranging a plurality of short rollers which are rotatable independently of each other, along a straight line so as to constitute the inclined rollers. CONSTITUTION:The upper travel section 21a of a flat belt 21 is extended from an end roller 4 and is wound around an upper inclined roller 2 which is inclined by an angle of 45 deg. to the running direction of a conveyer so as to be folded back. Then it is wound around an idler end roller 5. Further, it goes around a lower inclined roller 3, snap rollers 7, 8 and a drive roller, and then returns to the end roller 4 so as to form the lower travel section 21b. Each of these inclined rollers 2, 3 is composed of several short rollers 2a, 2b which are arranged being rotatable independently from each other along a straight line so as to form a single roller shape. With this arrangement, the short rollers may be rotated independently of each other in accordance with travel speeds due to differences in tension among widthwise parts of the flat belt. Accordingly, slipping is reduced, thereby it is possible to restrain the generation of heat.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a belt conveyor, and in particular, in a belt conveyor using a flat belt, the end portion of the conveyance path is fixed with respect to the conveyance direction. Regarding things formed diagonally.

(Prior art) Generally, in the case of a belt conveyor using a wide flat belt, the end of the conveyance path is perpendicular to the conveyance direction, so when connecting diagonally to another conveyor, etc. It was necessary to interpose other conveyance means such as rollers or support plates in the triangular part of the paper.

As a solution to this problem, Utility Model No. 49-4377
There is a belt conveyor shown in the publication.

In the belt conveyor disclosed in this publication, one end of the endless flat belt between the upper running part on the conveying side and the lower running part on the return side is set relative to the length direction of the flat belt. By wrapping it around a pair of upper and lower inclined O-rollers (end rollers) disposed diagonally and folding it back between the upper and lower rotating parts, one end of the conveying path is aligned with respect to the conveying direction. It is formed diagonally.

(Problem to be Solved by the Invention) In the structure of the above publication, the flat belt slips in the length direction of the inclined end roller (end roller), so the flat belt is likely to be adversely affected by heat generation. Since the inclined roller (end roller) is one long roller, the difference in tension in each part of the flat belt in the width direction causes subtle differences in the moving speed of the flat belt for each part in the length direction of the inclined roller. As a result, the flat belt also slips in the direction of rotation of the inclined roller (end roller), and as a result, the slip between the inclined roller and the flat belt increases, which increases the amount of heat generated and has a negative effect on the flat belt. It was easy to give.

The present invention has been made in view of these points, and aims to reduce the slip between the inclined roller and the flat belt, thereby reducing the amount of heat generated and reducing the negative impact on the flat belt. .

[Structure of the invention]

(Means for Solving the Problems) The present invention provides at least one end portion 21c between the upper rotating portion 21a on the conveying side and the lower rotating portion 21b on the return side of the endless flat belt 21. At least one end of the flat belt 21 between the upper running part 21a and the lower running part 21b is wound around a pair of upper and lower inclined rows 52.3 arranged diagonally with respect to the length direction of the belt 21. In the belt conveyor in which the portion 21C is folded back between the upper rotating portion 21a and the lower rotating portion 21b, and the free end roller 5 is disposed inside the folded end portion 21c of the flat belt 21, the inclined roller 2,
3, a plurality of independently rotatable short rollers 2a, 3a are arranged in a straight line.

(Function) The belt conveyor of the present invention has a plurality of short rollers 2a of the inclined rollers 2.3,
3a rotates independently.

(Example) An example of the belt conveyor of the present invention is shown in Figures 1 to 4.
This will be explained with reference to the figures.

2 and 3, reference numeral 1 denotes a frame, and a pair of upper and lower inclined rollers 2 and 3 are installed at the front end (left end in the figure) of the frame 1 at an angle 45 to the right with respect to the length direction of the frame 1.
An end roller 4 is supported horizontally at a right angle to the longitudinal direction of the frame 1, and an end roller 4 is supported horizontally at a right angle to the length of the frame 1 at the rear end (right end in the figure) of the frame 1. Furthermore, the right side of the front end of this frame 1 (the upper left side in Fig. 2)
A free end roller 5 is supported horizontally and parallel to the length direction of the frame 1.

Here, the pair of upper and lower inclined rollers 2.3 at the front end of the frame 1 are a short roller 2a that can be rotated independently,
A plurality of rollers 3a, for example about eight, are arranged in a straight line and supported like a single roller.

Further, a support plate 6 is provided horizontally between the inclined roller 2 and the end roller 4 on the upper side of the frame 1.
A pair of front and rear snap rollers 7.8 are located at the lower side of the frame 1 and are pivoted at right angles to the length direction of the frame 1 in the same way as the end rollers 4. A drive pulley 9 is pivotally supported on the lower side between 7 and 8.

A drive motor 11 with a reduction gear is provided behind the drive pulley 9, and the drive motor 11 and the drive pulley 9
are connected by a timing pulley 12, a timing belt 13, and a timing pulley 14, and a drive motor 11
Rotation is transmitted from the drive pulley 9 to the drive pulley 9.

Reference numeral 21 denotes an endless flat belt, and as shown in FIG. is supported on the end roller 4 at the rear end of the frame 1 via the support plate 6 from above the inclined roller 2,
The lower rotating portion 21b of the flat belt 21 on the return side is wound around from above to below the end roller 4 at the rear end, and then from above the snap roller 8 on the rear side to below the drive pulley 9. The flat belt 21 is wound from below to above the inclined roller 3 on the lower side of the front end of the frame 1 via the top of the snap roller 7 on the front side, and between the upper rotating portion 21a and the lower rotating portion 21b of the flat belt 21. The front end portion 21c is folded back at a right angle between the upper and lower rotating portions 21a and 21b from between the pair of upper and lower inclined openings 2 and 3 of the front end, and then folded back at a right angle to the right side of the frame 1. It is hung on the free end roller 5 of.

Although not shown, the shaft support at one end of the free end roller 5 and the shaft support at both ends of the rear snap roller 8 are each supported by the frame 1 via a tension adjustment mechanism, and the flat belt 2
The position of the belt 1 can be adjusted in the length direction, and by adjusting the position of each shaft support in the direction of the arrow shown in the figure, the flat belt 21 can be tightened and its tension can be increased.
In particular, by adjusting the position of the shaft supports at both ends of the snap roller 8, the tension of the entire flat belt 21 can be increased.
By adjusting the position of the shaft support at one end of the free end row 55, the flat belt 21 is applied to the inclined row 52 forming the front end of the conveyance path.
The tension balance in the width direction can be changed.

Then, by driving the drive motor 11 in the direction of the arrow shown in the figure and rotating the drive pulley 9, the flat belt 21 rotates, and this belt conveyor is constructed of an upper rotating portion 21a of the flat belt 21. An article (not shown) is supported on a conveyance path and conveyed from the end roller 4 side to the inclined roller 2 side. The front end can be connected diagonally to the end or side of another conveyor.

In this belt conveyor, since the flat belt 21 slips in the Q direction of the inclined rollers 2 and 3, the flat belt 21 is likely to be adversely affected by heat generation. Due to the difference in tension at
1, the flat belt 21 also slips in the direction of rotation of the inclined roller 52.3, and as a result, the slip between the inclined roller 2.3 and the flat belt 21 increases, which causes heat generation. In this invention, each of the inclined rows 2.3 has eight short rollers 2a that can each rotate independently, although the increase in the amount tends to have a negative effect on the flat belt 21.

3a are arranged in a straight line and supported like one long roller, the slip in the rotational direction of the flat belt 21 and the inclined roller 2.3 can be reduced, thereby reducing the amount of heat generated. Thus, it is possible to prevent the flat belt 21 from being adversely affected.

That is, as shown in FIG. 4, the moving speed of each portion of the flat belt 21 in the width direction relative to the inclined roller 2.3 changes from vl at the side of the flat belt 21 to v2 at the other side of the flat belt 21. If the inclined roller 2.3 changes linearly and there is a difference of dV in the moving speed, then if the inclined roller 2.3 is a single straight roller as in the past, the difference in moving speed will be the same with the belt width W as the base. The area of the large triangular portion whose height is dV corresponds to the amount of slip, but when the plurality of short rollers 2a and 3a constituting the inclined rollers 2.3 are independently rotatable as in the present invention, The plurality of short rollers 2a and 3a of the inclined rollers 2 and 3 rotate independently and differentially depending on the moving speed of each portion of the flat belt 21 in the width direction, so that each short roller that the flat belt 21 comes into contact with rotates differentially. The sum of the areas of the small triangular parts whose bases are the width - a of the rollers 2a and 3a corresponds to the slip amount, and thus,
Since the slip between the flat belt 21 and the inclined rollers 2.3 in the rotational direction can be significantly reduced, the amount of heat generated can be reduced and adverse effects on the flat belt 21 can be prevented.

In addition, in this belt conveyor, the flat belt 21 tends to shift in the direction of arrow a in FIG. By adjusting the position of the shaft support at one end,
When the tension balance of the front end 21C of the flat belt 21 applied to the inclined roller 2 is partially changed as shown from 11 to T2 in FIG. 1, the flat belt 21 is prevented from shifting in the direction of the arrow a in FIG. can do.

〔Effect of the invention〕

As described above, according to the present invention, in a belt conveyor in which the end of the conveyance path constituted by the upper circulating portion of the flat belt is formed obliquely by an inclined row, the tension in each portion in the width direction of the flat belt is Since the multiple short rollers of the inclined roller rotate independently according to the difference in the moving speed of the flat belt due to the difference in speed, slippage in the rotational direction of the flat belt and the inclined roller can be reduced, thereby reducing the amount of heat generated. This can prevent the flat belt from being adversely affected.

[Brief explanation of the drawing]

The figures show one embodiment of the belt conveyor of the present invention, in which Fig. 1 is a perspective view showing its outline, Fig. 2 is a plan view thereof, Fig. 3 is a side view with a part thereof cut away, and Fig. 4 is It is an explanatory diagram showing the effect. 2.3 Inclined rollers, 2a, 3a...short day-ra, 5.
Free end roller, 2111Φ flat belt, 21a ◆Upper rotating part of the flat belt 21, 21b...Lower rotating part of the flat belt 21, 21c...End part of the flat belt 21.

Claims (1)

[Claims] (1) At least one end between the upper rotating part on the conveying side and the lower rotating part on the return side of an endless flat belt is arranged diagonally with respect to the length direction of the flat belt. The flat belt is wound around a pair of inclined rollers, and at least one end between the upper and lower running parts of the flat belt is folded back between the upper and lower running parts. In a belt conveyor in which a free end roller is arranged inside the folded end of the belt,
A belt conveyor characterized in that the inclined rollers are formed by arranging a plurality of independently rotatable short rollers in a straight line.