JPS59138519A - Endless turn conveyor - Google Patents

Abstract

PURPOSE:To enable the change of the direction of an object article during its transfer process to be rapidly executed without fail by parallelly providing two endless conveyor belts and providing relative differential speed drive including their stoppage between one side belt and the other side belt. CONSTITUTION:Two endless conveyor belts 1, 2 operated independently with each other by driving sources are provided in parallel to each other, and relative differential speed drive including their stoppage is provided between the belt 1 and the belt 2 in the course of a process where object articles 3 are placed on said belts and transferred from one end to the other end of the belt. In this way, it is possible to rapidly change the direction of the article transfer without fail during the transfer process of articles 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for bundling and bulk bundling (palletizing) target articles such as cardboard boxes, etc. during the process of transferring the target articles.
That is, it relates to an endless turn conveyor that quickly and reliably performs turns.

Object turnover must occur at each stage of the handling line.

For example, (→When bundling the corrugated poles before making the paperboard, it is sometimes necessary to turn them 90' and tie them vertically and horizontally in order to match the corrugated cardboard binding direction. (b) After bundling the corrugated cardboard bundles before making the box. 1jHc for palletizing (large bundling) will tilt if the positions of the stacking allowances overlap.

O', 90. 180. 270(
-90) and stack them. (,) After placing a product part in a corrugated pole box, it is necessary to turn it 90 times when tying it in a parallel or cross shape.

For example, regarding (a) and (b), as the performance of 7lexo has improved in recent years, the delivery speed of corrugated cardboard has increased to a maximum of 250 sheets per minute, for example. Since at least 10 corrugated poles are stacked and bundled, if one bundle is not completed within a time interval of about 2.6 seconds, one corrugated cardboard bundle will be stagnant on the transfer binding line, making the line longer and requiring less equipment. As the required floor area and area become larger, the time required for one operation tends to become longer.

Conventionally, these transfers and rotations have been carried out by installing a transfer device with a turn mechanism between the front and rear conveyors, or by installing a lifting device with a rotary actuator, but it is possible to transfer and turn the target article after it has stopped. Since it usually takes several seconds or more to complete, efficient operation is not possible, or the shaft is
As shown in No. 8722, a device that contacts and turns the articles along a single conveyor line has been proposed, but there are problems with the accuracy of turning.The present invention solves the problems of the prior art. Tame 1
1, in which the conveyor is configured by installing a pair of conveyor belts on both sides in parallel, without separately attaching a device for temporarily stopping and turning the articles to the conveyor for transferring the target articles.

Both belts are driven at the same speed to carry the target article onto the conveyor from one end in the transfer direction tζ Lfic, and then in the middle of the conveyor transfer process h, while continuing the transfer, a predetermined speed difference is maintained between both belts for a predetermined time. When the rotation is completed, the belts on both sides are made to have the same speed again and are carried out from the other end of the conveyor in the transfer direction toward the subsequent device.

For this reason, the endless turn conveyor of the present invention has a structure in which two endless turn conveyor belts are arranged in parallel and the target articles are placed 11 to 10 times.
1, and in the middle of the process of transferring the object from one end to the other, the object is placed at a desired angle at tζL4 so that a relative speed differential drive including stopping can be applied between the L side belt and the other side belt. As for how to turn it.

There is a method in which the belt on the first side is switched to a high speed and a belt on the other side to a low speed for a predetermined time and then turned, and a method in which both belts run at the same speed and only one side is stopped for a predetermined time and then turned. In either method, 9 the driving speed difference between the belts on both sides is 3! ! ! 4 m'b required for turning the desired angle, and the surface condition of the target article.

For example, it can be determined depending on the material of the paper, the presence or absence of printing, and the coefficient of friction depending on the surface properties of the conveyor belt. The transport direction of the target article on the conveyor is unlikely to deviate from the original direction due to rotation, and simple side walls with a width slightly larger than the maximum span of the target article are installed on both sides of the conveyor with a circular plate and L″c′R. It will be transferred smoothly just by pressing the button.

Hereinafter, the present invention will be explained in more detail with reference to the accompanying drawings. Figure 1 is a schematic plan view of an apparatus according to an embodiment of the present invention, and Figure 2 is a schematic side view of a device according to an embodiment of the present invention.

Endless-turn conveyor of the present invention.

Two 111Jl pairs of endless conveyor belts (1) and (2) K are constructed, and these are mutually tζ.
They are arranged in parallel and are arranged in parallel with the carry-in end pulley (4) and the carry-out end pulley (5) of the target article (3), extending over tζ in an endless manner. Double conveyor belt (1)
For (2), a commercially available raft lug type belt tracker is used to increase the coefficient of friction with the object to be placed (8), and the width and mutual spacing of each belt is adjusted according to the size of the product. Each bell) (1) (2) Support cones (6) are arranged in a row on the lower surface of the upper side, and a return roller (7) is provided in contact with the lower side.

For each bell) (1) and (2), attach a small protrusion end pulley (5) and a follower V-belt pulley (8) on the same axis, and connect the drive V-belt pulley of the drive source (9) to the transmission V-belt (
(b)) and rub it once so that each part runs independently.

The drive source (9) is variable speed, and is configured using, for example, a ring cone pull-up speed drive type motor.
■If you toss the diameter of belt pulley (8) (to) with the same diameter t 99mm, conveyor belt (1) (2) H6・8~9
Variable speed operation is possible at a linear speed of 4.2 m/min. The speed can be reduced to 0 by stopping the motor. The functions and effects of the present invention are demonstrated by the numerical values of an example of a practical test as follows.

(1) Test conditions Binding Corrugated cardboard was used as a target article, and turned for large binding (-retizing).

(1-1) Equipment conditions for the conveyor of the present invention Belts (1) and (2) width each 200mm, interval 250mm
mm.

Loading and unloading m7'-! J (4) (5) Distance 1II3
QQQ'mm.

Belt speed change operation range 6.8 to 94.2 m/m1n (
1-2) Target article size 580 x 680 x taMt) mm (I-i) Turning mode See FIG. 8. The orientation of the target article (3) is 0° (turn 7!L) from the position shown in Figure 00) to the position shown in Figure 1←).

Figure (f + o + yO', rguo + 1go", I
W HO+270'<-90') lζ Rotate.

(1-4) Turning operation (A) While both belts are running at the same speed (60 m/min),
Stop the R side and return to the same speed after turning the target object〇(B) While both belts are running at the same speed (60m/min),
Seri91J f 80m/min KZ Hi)' Ta!
7L, return to the same speed after turning the object ◎ (C) Both belts are running at the same speed (60m/min) During operation, reduce the speed to 15m/mi on one side, and return to the same speed after turning the object. Return.

For reference, both belts were run at the same point at the same time (at the same speed, alternately on the same windings), and the turning conditions were observed.

(1) Test results (1-1) A test was conducted under the above conditions 1ζ, and the required time for turning and the moving distance of the target article before and after turning (8 same distances) t- were measured, and turning accuracy was examined.

The results are shown in the table below.

Turning takes less than 8 seconds and the distance is less than 1500mm, so the conveyor transfer distance is 8000mm.
For tζ, it is possible to provide a turntable in which both belts run at the same speed before and after the turn.

n-2) Adjustment of required turning time In the relationship between turning time and distance and turning accuracy, some errors occur depending on the conditions of the target article, conveyor conditions, etc. For example, the M that occurs in the direction of the long and short sides of the object object at the beginning of the turn is as follows: ◎ In the case of a 90' turn of the previous size object, the R side of the belt at a speed of 60 rn/sea is gOm/m1nt.
When speeding up ζ, time 1.8 in Figure 8 0)
~1-9 seconds, distance C1) 1500mm, but the 8th
In figure (b), time ■・9~2・0 seconds, distance CIM) 1
750mm -tl+6 f Ot 7t When speeding down one side of the belt to 15m/min, in Figure 4 Gf) the time is 1・θ seconds and the distance is 11 CI J 700m
m te;h le fr', time 1-1 seconds in Figure 4 (b), distance flin! (4a) Regarding the time setting and rotation distance *) ζ, which was 780 mm.

After unifying the conditions, data can be collected and operating conditions can be set for each product type. This is essential for setting handling patterns! ! Control can be performed by setting a command for one period of rotation angle and a corresponding change in operating speed for one hour as an electrical sequence.Even if the conveyor is tilted, it can be handled in the same way.

For example, on a line where stacked poles are tied up after bundling L7t and stacked on a squeezer, a reversing machine is currently installed between the bundling machine and the palletizer in order to automate the semi-automatic manual setting of patterns. However, since the method involves temporarily stopping the object and then reversing it, there is a limit in terms of the time cycle regarding the relationship between the speeds of each part, which poses a bottleneck.

In the present invention, the target article can be transferred and turned quickly and accurately, which saves one hour, eliminates the need for waiting or stagnation of the target article, and shortens the line! ! The installation floor area is small δ<L, and the work can be done very efficiently.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of an apparatus according to an embodiment of the present invention. FIG. 2 is a schematic side view thereof, FIG. 8 is a turning mode diagram of the target article, and FIG. 64 and FIG.
FIG. 4 is a diagram displaying the amount of error depending on the rotation mode. (1) (2)...endless conveyor belt,
(3)...Target article, (4)...Carry-in end pulley, (5
)...Output end pulley, (6)...Support roller, (7)
...Return low? , (8)...Driver V-belt pulley, (9)...Drive source, (Driver V-belt pulley, (
B) φ transmission #V belt, (Ll... glue position, (/□
)(7m)Ct s) (7'a)...Distance. I41FF applicant's representative name: Patent attorney Kado 1) Ka; Hiroshi ・j

Claims (1)

[Claims] Two endless conveyor belts that can be operated independently from each other by a drive source are installed in parallel, and objects are placed on them.
An endless turn conveyor characterized by being able to provide relative differential speed drive including stopping between the l-side belt and the other-side belt in the middle of the process of transferring from 'lll to the other end.