JPH06271030A - Curve conveyor - Google Patents

Abstract

PURPOSE:To transport a work along a curve in a stable attitude by driving an outer edge and an inner edge transport belts composing a curve conveyor respectively at a speed at which an outer end to an inner end of the work are transported from a starting end to a final end of a curve transport passage almost in the same time. CONSTITUTION:A curve conveyor comprising an outer edge and an inner bedge transport belts C1, C1 forming an almost perpendicular curve transport passage R is installed at a transfer part between plural conveyors. The outer edge and the inner edge transport belt C1, C2 comprises a transport belt 14, 12 endlessly applied between a drive and a follower rollers 10, 20; 11, 21, and an arc-like support plate 15, 25 disposed on the carrier side of it, so it is curved along the outer side and the inner side of the curve transport passage R. The outer edge and the inner edge transport belts C1, C2 are driven respectively at a speed at which an oute rend and an inner end of a work are transported from a starting end to a final end of the curve transport passage R almost in the same time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curve conveyor which can carry a curve while holding a predetermined posture for transferring a work from one of the intersecting conveyors to the other.

[0002]

2. Description of the Related Art For example, when a paper tube is conveyed by a belt conveyor, the belt conveyors of the preceding stage and the succeeding stage are arranged, for example, in a direction orthogonal to each other due to the layout of the apparatus and the like. A curved conveyor is provided at the connecting portion of both belt conveyors to perform curved conveyance.

In a typical curve conveyor of the related art, in order to form an arcuate curve conveyance path in which guide members are arranged on both sides, a conical roller is supported on the start end side and the end side of the fan belt, A method is known in which the belt speed on the outer peripheral side is made higher than that on the outer peripheral side, and thereby the both ends of the paper tube are guided by both side guides and the paper tube is conveyed in a 90 ° curve on a conveyor belt.

[0004]

However, in the conventional curve conveyor, the paper tube is jammed on the conveyor belt due to the collision with the guides on both sides during the curve conveyance, or the paper tube is turned in the conveying direction. Since it may be transferred to the belt conveyor of the next stage as it is, the work of correcting the posture is required and it is very complicated, especially when the length of the paper tube is shorter than the distance between both side guides. The problem was noticeable. Of course, an automatic posture straightening device may be provided at the connecting portion between the curve conveyor and the belt conveyor, but this is not preferable because it causes an increase in cost.

In view of the above problems, it is an object of the present invention to provide a curved conveyor which can hold a correct posture and can be reliably curvedly conveyed when transferring conveyors.

[0006]

Therefore, the curved conveyor according to the present invention is arranged at the intersection of a pair of intersecting conveyors, and the curved conveyor conveys the work from the preceding conveyor to the succeeding conveyor to transfer the workpieces. The conveyor comprises a pair of conveyors stretched side by side along the outer edge side and the inner edge side of the curved conveying path, and the conveyor belts extend along the outer edge and the inner edge of the curved conveying path from the start end to the end. The belt carrier surfaces are guided by guide members so as to face each other in an arc shape, and both ends of a work of a predetermined length can be sandwiched between the facing carrier surfaces, and the outer edge and inner edge transport belts are respectively The driving device that drives the outer edge and the inner edge of the work extends outward from the beginning to the end of the curved conveyance path at a speed that is conveyed at almost the same time. And summarized in that for driving the inner conveyor belt.

The curved conveying path can be constructed by stretching a conveying belt with a driving roller and a driven roller and guiding a predetermined portion in a circular arc shape with a guide. When doing so, it is preferable to provide a tension roller to avoid interference between the belt return side and the belt carrier side. The guide on the side of the belt carrier is preferably constructed by arranging small-diameter rolls on an arc, but other guides such as a plate may be used to curve the part on the side of the belt carrier.

The distance between the outer and inner conveying belts may be fixed, but it is preferable to be able to adjust the distance when carrying out curved conveyance of works of different lengths. In this case, the speeds of the outer and inner conveyor belts are adjusted according to the intervals.

The holding belt portion may be any one having a predetermined elasticity, for example, sponge or soft rubber can be adopted,
It may be attached to the conveyor belt or may be integrally formed as a part of the conveyor belt. The conveyor belt may be driven by driving a belt supporting portion at the start or end, for example, a roller, or a belt may be driven by separately providing a driving roller or the like.

[0010]

When the work is fed from the pre-stage belt conveyor to the starting end side of the curve conveyor in a posture parallel to the width direction, both end surfaces of the work elastically contact with the sandwiching belt portions of the outer and inner conveyor belts, so that both ends of the work are Are clamped and held between the conveyor belts. At that time, when the outer conveyor belt is driven at a higher speed than the inner conveyor belt, the work is conveyed while swirling along the curved conveyor path along with the movement of the conveyor belt, and from the end of the curve conveyor to the next-stage belt conveyor. It is sent out in a posture parallel to the width direction.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to specific examples shown in the drawings. 1 to 4 show a curved conveyor according to an embodiment of the present invention. In the figure, the first and second belt conveyors B1 and B2 are laid out at about 90 °, and the outer edge conveyor belt C1 and the inner edge having a curved conveyor path R of about 90 ° at the connecting portion of both belt conveyors B1 and B2. A curve conveyor C including a conveyor belt C2 is arranged.

In this curve conveyor C, a horizontal table T is fixed on the floor surface by supporting legs, and an outer edge conveyance belt C1 is stretched on the outer side of the start end and the end of the curve conveyance path R on the horizontal table T. To be done. The outer edge transport belt C1 is configured as follows. That is, the drive roller 10
Further, the driven roller 11 is rotatably supported by the vertical shaft 13, and the tension roller 12 is rotatably supported by the vertical shaft 13 at a position outside the curved conveyance path R between the rollers 10 and 11, Further, the drive roller 10 is connected to the rotary shaft of the drive motor M.

A conveyor belt 14 is stretched around the drive roller 10 and the driven roller 11 in an endless manner, and a predetermined tension is applied by a tension roller 13. On the carrier side of the conveyor belt 14, upper and lower circular arc-shaped support plates 15 are formed on the outside of the conveyor belt.
And a plurality of small-diameter rollers 16 are mounted on both support plates 15 so as to be arranged on a circular arc.
The carrier-side portion of the conveyor belt 14 is curved in an arc shape along the outer line of the curved conveyor path R by the small-diameter roller 16. A sponge belt 17 is attached to the outer peripheral surface of the conveyor belt 14 between the upper and lower small-diameter rollers 16.

Further, on the horizontal table T, an outer edge conveying belt C2 is stretched at the innermost of the start end and the end of the curved conveying path R. The outer edge transport belt C2 is configured as follows. That is, the driving roller 20 and the driven roller 21 are rotatably supported by the vertical shaft 23, and both rollers 20, 21
A tension roller 22 is rotatably supported by a vertical shaft 23 at a position deviated inward from the curved conveyance path R in the middle of.

A conveyor belt 24 is stretched around the drive roller 20 and the driven roller 21 in an endless manner, a predetermined tension is applied by a tension roller 23, and the carrier side of the conveyor belt 24 has a plurality of small diameters inside the belt. Upper and lower arc-shaped support plates 2 supporting the rollers 26
5 is attached, and the carrier side portion of the conveyor belt 24 is curved in an arc along the inner line of the curved conveyor path R. A sponge belt 27 is also attached to the outer peripheral surface of the transport belt 24.

The end of the first belt conveyor B1 is lifted upward, and a guide plate is inclined between the first belt conveyor B1 and the curve conveyor C, and the second belt conveyor B1 is also provided. The start side of B2 is set at a position lower than the end of the curve conveyor C. In addition,
Although the control system of the drive motor M will not be described in detail, it is necessary to control so that the outer end and the inner end of the paper tube W move from the start end to the end at the same time. The distance between the outer and inner conveyor belts 14 and 24 is set to be approximately the same as the length of the paper tube (work) W to be conveyed.

Next, the operation will be described. When the paper tube W is conveyed by the front belt conveyor B1 in a posture parallel to the width direction and sent out from the end thereof, the paper tube W rolls on the guide plate and is sent to the start end side of the curve conveyor C, and both ends thereof are outside. Also, the inner conveying belts 14 and 24 are firmly and elastically sandwiched between the sandwiching belts 17 and 27.

At this time, the outer conveyor belt 14 is controlled so as to be driven at a speed faster than the inner conveyor belt 24, and the outer end side of the paper tube W has an inner end corresponding to the speed difference between the conveyor belts 14 and 24. As a result of being conveyed faster than on the side, the paper tube W is swung approximately 90 ° along the curved conveyance path R with the movement of the conveyance belts 14 and 24, and a posture parallel to the width direction from the end of the curve conveyor C. When it is sent out by, it is accurately carried and conveyed on the lowered next-stage belt conveyor B2.

Therefore, the paper tube W on the front-stage belt conveyor B1 remains parallel to the width direction, and the next-stage belt conveyor B2 remains.
There is no need to perform complicated posture correction work, and it is not necessary to use an expensive posture automatic correction device.

[0020]

As described above, according to the present invention, since the work is conveyed by curving by sandwiching both ends thereof, it is possible to convey the work by curving while maintaining a correct posture, and without compensating the complicated posture. Work can be transferred between belt conveyors.

[Brief description of drawings]

FIG. 1 is a plan view showing a curve conveyor (however, a drive motor M is omitted) according to an embodiment of the present invention.

FIG. 2 is a side view showing the curve conveyor.

FIG. 3 is a perspective view showing a configuration of main parts of the curve conveyor (however, the drive motor M is omitted).

4 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

C curve conveyor R curve transfer path 14, 24 transfer belt 16, 26 small diameter roller (guide) 17, 27 nip belt W paper tube (work)

Claims (2)

[Claims] 1. A conveyor which is arranged at an intersection of a pair of intersecting conveyors and which conveys a work from a preceding conveyor to a succeeding conveyor by curving and transferring the workpiece, wherein the conveyor is an outer edge side and an inner edge side of the curve conveying path. Each of the conveyor belts faces the outer edge and the inner edge of the curved conveyor path along the outer edge and the inner edge of the conveyor belt in a circular arc shape. Is guided by the guide member so that both ends of the work of a predetermined length can be sandwiched between the opposing carrier surfaces, and a driving device for driving each of the outer edge and the inner edge transport belts drives the outer edge and the inner edge of the work. Is characterized in that the outer and inner conveyor belts are driven at a speed at which the conveyor conveys the curved conveyor path from the beginning to the end at substantially the same time. Conveyors. 2. The outer and inner conveyor belts are provided with a nipping belt portion that elastically nips both ends of the work by contacting the outer end surface or the inner end surface of the work with a predetermined elasticity over the entire length of the belt. The curve conveyor according to claim 1.