JPH06263242A - Assorting device for belt conveyor - Google Patents

Abstract

PURPOSE:To reduce a gap between a straight advance conveyor and an assorting conveyor without using any auxiliary member. CONSTITUTION:As for an assorting device for a belt conveyor, an assorting conveyor 2 which is shiftable in the horizontal direction is installed between a plurality of straight advance belt conveyors 1 and 1 installed intermittently. In order to allow the assorting belt conveyor 2 to be swingable in the aslantly left or right direction around both the rear corner parts of the assorting belt conveyor 2, for the article transfer direction of the straight advance belt conveyor 1, the swing revolution parts 63 and 64 of the assorting belt conveyor 1 are installed at both the rear corner parts, and cylinders 61 and 62 as selecting means for making only one between the swing revolution parts 63 and 64 effective according to the swing direction are installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor sorting device which is installed in the middle or end of a straight belt conveyor line.

[0002]

2. Description of the Related Art As a conventional belt conveyor sorting device, a device disclosed in Japanese Patent Laid-Open No. 62-212117 has been proposed. This will be described with reference to FIGS. 3 to 5. Reference numeral 1 denotes a plurality of straight belt conveyors in a straight belt conveyor line. The straight belt conveyors 1 are installed intermittently and fixedly at appropriate intervals. The conveying belt 1a of the straight-belt conveyor 1 is driven in the conveying direction P of an article (not shown) by a driving device (not shown).

Reference numeral 2 denotes two adjacent straight belt conveyors 1,
It is a sorting belt conveyor installed in one. The conveyor frame 21 of each sorting belt conveyor 2 has an oscillating base 22 fixed to the lower part thereof, and is assembled via the oscillating base 22 so as to be horizontally oscillatable with respect to the lowest pedestal 23.
The conveyor frame 21 has a central axis O of swinging action in the vicinity of a substantially central portion thereof in plan view. In the figure, 2a is a conveyor belt of the sorting belt conveyor 2, 2b is a drum at both ends, 2c is a bearing of the drum 2b, and the conveyor belt 2a is a motor provided on the swing base 22 or the conveyor frame 21. From the other drive device 24 to the known transmission device 2
When a rotational force is applied to the drive drum 2b via 5, it is rotationally driven in the arrow P direction. Reference numeral 9 is a sensor that sends a signal to the electric control device regarding the presence or absence of a conveyed article.

A rotary shaft 3 is fixed to the lower surface of a swing base 22 fixed to the conveyor frame 21, and the rotary shaft 3 is swingable (rotatable) on a mount 23 via a bearing 31. )
Supported by. Therefore, the entire sorting belt conveyor 2 including the swing base 22 is swingably supported on the frame 23. An arm 32 is fixedly mounted on the rotary shaft 3, and the tip end of the arm 32 is pivotally attached to the tip end side of the fluid pressure cylinder device 4 and other actuating devices. This actuating device, that is, the base end side of the fluid pressure cylinder device 4 is mounted on the pedestal 2
It is pivotally attached to a mounting member 5 fixed to the unit 3 via a bracket 51. Two fluid pressure cylinder devices 4 are provided in pairs on both sides of the pedestal 23 in order to smoothly and stably perform the swinging displacement action of the sorting belt conveyor 2 which will be described in detail later. May be. In this case, the tip ends of the fluid pressure cylinder devices 4 and 4 are pivotally attached to the respective ends of the arm 32 provided so as to project to both sides.

In the conventional belt conveyor sorting apparatus configured as described above, as shown in FIGS. 3 and 4, when the articles are conveyed on the conveyor line in the direction of arrow P, each sorting belt conveyor is 2 can be displaced from the straight line position of the solid line to the right or left slanting direction, for example, approximately horizontally by about 45 °. If explained with reference to FIG. 3, the chutes 6a, 6b, 6c or 6d in the four directions can be arbitrarily moved. Is to be discharged and sorted. 4 and 5, the article sorting operation will be described. When it is desired to discharge an article conveyed in the direction of arrow P on the straight-belt conveyor 1, for example, in the left diagonal direction, an operating device, that is, a flow The piston of the body pressure cylinder device 4 is contracted, and the sorting belt conveyor 2 is rotationally displaced leftward about 45 ° together with the swing base 22 with respect to the pedestal 23 via the arm 32 and the rotary shaft 3.

That is, since the sorting belt conveyor 2 swings diagonally to the left from the straight-line position indicated by the solid line to the discharge position indicated by the chain line to change the position, the articles are discharged and sorted in the direction of the arrow L. . On the contrary, when it is necessary to discharge the article in the diagonally right direction, the fluid pressure cylinder device 4 is used.
It is sufficient to return the piston of No. 1 to the original position and return the sorting belt conveyor 2 to the straight-ahead position. As shown in FIG. 5, in the conventional example, the conveying surface of the belt 2a in the sorting belt conveyor 2 is inclined so that it is low on the front side and high on the rear side. This is for ensuring the transfer of articles from the vehicle or the transfer to the rearward straight belt conveyor 1.

A certain space is provided between each sorting belt conveyor 2 and the front and rear straight belt conveyors 1, 1 in this sorting apparatus so as not to interfere with each other when the sorting belt conveyor 2 swings. There is. This interval is
When the sorting belt conveyor 2 is oscillated and placed at the discharge position, some problems occur in terms of transfer of articles.
That is, the space s on the plane triangle formed between the sorting belt conveyor 2 and the front straight belt conveyor 1 is
If the item is small, it may jump up there.
In addition, in order to complement the above-mentioned planar spacing s on the triangle, FIG.
Further, as shown in FIG. 5, substantially horizontal complementary members 7a and 7b are fixedly installed on the conveyor frame 21 of the sorting belt conveyor 2.

In the illustrated example, the crescent-shaped complementary member 7a fixed to the front part of the conveyor frame 21 and the conveyor frame 2 are provided.
Triangle-shaped complementary members 7b, 7 fixed to both front sides of
b, but these are sorting belt conveyors 2
It is needless to say that it is formed in such a shape that it does not collide with the linear belt conveyor 1 at the time of the swing displacement. These flat plate-shaped complementary members 7a can be attached so as to be lower by several mm than the conveying surface of the belt 2a in the sorting conveyor. Further, it is preferable to provide a side plate 8 extending substantially vertically upward from the rear outer edge of the triangular complementary member 7b to the rear half of the conveyor frame 21. Each side plate 8 can serve as a guide plate that prevents the articles from bouncing when the sorting conveyor 2 is displaced to the discharge position.

[0009]

In the above-mentioned conventional sorting apparatus, the sorting belt conveyor is used to sort the articles from the straight traveling conveyor into the right and left, but when the sorting conveyor is in line with the straight traveling conveyor. A gap is formed, and if this gap is large, the transfer of articles becomes uncertain, and sometimes the article falls. Therefore, in order to reduce the gap, a crescent-shaped complementary member 7b is conventionally provided, but even if the complementary member 7b having such a shape is provided, the gaps at both ends are not reduced, and the small articles are prevented from falling. It cannot be completely prevented, and a large amount of cost is required to attach the complementary member 7b. The present invention seeks to provide a belt conveyor sorting device that further reduces gaps.

[0010]

Therefore, the present invention is directed to a belt conveyor sorting apparatus in which a sorting belt conveyor capable of horizontally swinging is installed between a plurality of intermittently traveling straight belt conveyors. In order to allow the sorting belt conveyor to swing in the left or right diagonal direction about both rear corners of the belt conveyor with respect to the article conveying direction of the conveyor, the swinging rotating portions of the sorting belt conveyor are set to both sides. The switching means is provided at each of the rear corners, and when swinging, only one of the swinging and rotating portions is made effective depending on the direction of the swinging. This is a means for solving the problem.

[0011]

The center of rotation of the sorting conveyor in the present invention is
Both rear corners of the sorting conveyor. That is, in the case of rotating in the diagonal right direction, it is rotated around the rear right corner in the traveling direction, and in the case of rotating in the left direction, it is rotated around the rear left corner. Therefore, when the sorting conveyor is returned to the original state, the gap between the sorting conveyor and the straight traveling conveyor can be reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments of the drawings. FIGS. 1 and 2 show the embodiments of the present invention. In FIGS. 1 and 2, reference numeral 1 is a plurality of straight belt conveyors in a straight belt conveyor line.
Are installed intermittently and fixedly at appropriate intervals, and the conveyor belt 1a of each straight belt conveyor 1 is driven in the conveyor direction B of an article (not shown) by a drive device (not shown). . Reference numeral 2 is a sorting belt conveyor installed between two adjacent straight belt conveyors 1 and 1. 2a is a conveyor belt of the sorting belt conveyor 2,
Reference numeral 2b denotes drums at both ends, 2c denotes bearings of the drum 2b, and the conveyor belt 2a has a rotational force applied to the drum 2b from a motor or other driving device 24 provided on the conveyor frame 60 via a known transmission device 25. Is given, the rotation is driven in the arrow P direction. Reference numeral 9 is a sensor that sends a signal to the electric control device regarding the presence or absence of a conveyed article.

Further, the conveyor frame 60 is supported by a roller 67 which can be oriented below the front frame, and cylinders 61 and 62 which are fixed to both ends of the rear frame. Reference numeral 68 denotes a base, on which the roller 67 is placed at the front portion (right end portion in FIG. 1), and a swing cylinder 65 which will be described later is fixed at substantially the central portion, and both rear corner portions (see FIG. Bushings 63 and 64 that can be fitted to the rod ends of the cylinders 61 and 62 are fixed to the left end portion in FIG. The bush 63,
The position of 64 is the center of rotation of the sorting belt conveyor 2 described later. The swing cylinder 65 is fixed on the base 68, and the rod end of the cylinder 65 is attached to the conveyor frame 60 via a connecting pin 66.

Next, the operation of the embodiment configured as described above will be described. As shown by the solid line in FIG. 2, when articles are conveyed on the conveyor line in the direction from arrow P to B, sorting is performed. The belt conveyor 2 is in the same direction.
In such a case, the rod position where the rocking cylinder 65 projects is set substantially at the center by a control device (not shown).
Are fitted and inserted into the bushes 63 and 64, respectively. Next, when the sorting belt conveyor 2 is swung to move in the L direction, the cylinder 62 is removed from the bush 64. Then, the rod of the swing cylinder 65 is further projected. Therefore, the sorting belt conveyor 2 rotates about the position of the bush 63 through the roller 67 in the L direction by about 45 ° and can convey the article to the rear conveyor 69.

In order to return the sorting conveyor 2 to the original linear position in such a state, the rod position of the rocking cylinder 65 is returned to the original state, and the roller is rotated through the roller 67 to be in the original B direction. On the contrary, in order to set the sorting belt conveyor 2 in the direction opposite to the L direction, the rod end of the cylinder 61 is detached from the bush 63. And the swing cylinder 65
If the protruding amount of the rod is reduced, the sorting belt conveyor 2
Is in the opposite direction through the roller 67 with the position of the bush 64 as the center. As described above, in order to set the sorting conveyor 2 in the L direction or the reverse direction, the rotation center position is set to be different from that of each of the bushes 63, 64. Therefore, the gap (S in the figure) between the sorting belt conveyor 2 and the sorting belt conveyor 2 can be reduced by bringing the rotation center position as close as possible to the straight belt conveyor 1 at both ends of the sorting belt conveyor. Even if it can be transported successfully. In addition, as shown in FIG. 3, a plurality of sorting belt conveyors can be installed in a column to support various sorting.

[0016]

As described in detail above, according to the belt conveyor sorting apparatus of the present invention, since the rotation center position is changed to either of the two rear corners, the clearance between the straight belt conveyor is set small. be able to. Therefore, it is possible to prevent uncertainties in transfer of articles and to prevent the articles from falling.

[Brief description of drawings]

FIG. 1 is a front view showing an outline of a belt conveyor sorting apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view showing an outline of a conventional belt conveyor sorting device.

FIG. 4 is an enlarged plan view of an essential part of FIG.

FIG. 5 is a front view of FIG.

[Explanation of symbols]

 1 Straight advance belt conveyor 2 Sorting belt conveyor 60 Conveyor frame 61, 62 Cylinder 63, 64 Bushing 65 Swing cylinder 67 Roller 69 Rear conveyor

Claims (1)

[Claims] 1. A sorting apparatus for a belt conveyor having a sorting belt conveyor horizontally swingable between a plurality of intermittently traveling straight belt conveyors, wherein the sorting is performed with respect to the article conveying direction of the straight belt conveyor. In order to allow the belt conveyor to swing leftward or rightward diagonally around both rear corners of the belt conveyor, the swinging and rotating parts of the sorting belt conveyor are provided at both rear corners, respectively. The belt conveyor sorting device is characterized in that a switching means is provided for making only one of the swinging and rotating parts effective depending on the direction.