JPH0721443Y2 - Reciprocating transport device for drive type roller conveyor - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating transfer device for a drive type roller conveyor, in which a part of the drive type roller conveyor that transfers only in one direction can be used to perform transfer in the opposite direction. .

[0002]

2. Description of the Related Art A conventional drive type roller conveyor (hereinafter, simply referred to as a conveyor) rotates a large number of rollers arranged at right angles to the conveying direction in the same direction so that an article placed on the roller is moved in one direction. It is to be transported.

5 to 6 exemplify a conventional conveyor, and FIG.
FIG. 6 is a perspective view of a part, and FIG. 6 is a right end view.

The conveyor 1 rotatably supports a large number of rollers 2 and 2 between side frames 1a and 1b, and a gear 3 is coupled to the end of each roller outside the side frame 1a. With the interlocking gear 4 interposed between the gears 3, all gears 3, 3
Are rotating in the same direction at the same time. Therefore, if one gear 3 is driven by a prime mover such as a motor (not shown),
By rotating all the rollers 2 and 2 in the same direction, the article placed on the rollers 2 and 2 can be conveyed in one direction.

[0005]

For example, when the conveyor is used to feed articles contained in a box and to return an empty box to its original position, the roller is rotated in the opposite direction. There must be a separate conveyor to rotate the.
Providing two sets of conveyors for transporting articles back and forth between the same locations in this way is costly due to the installation of the conveyors and also leads to poor floor space utilization.

[0006]

According to the present invention, an auxiliary roller for opposite direction conveyance is constructed by placing an auxiliary roller on a part of the width of a conveyor for one direction conveyance and rotating the auxiliary roller in the opposite direction to the roller of the original conveyor. To do.

[0007]

[Function] The auxiliary roller placed on the roller of the original conveyor is
It becomes an auxiliary conveyor that rotates in the opposite direction to the original roller and conveys in the opposite direction.

When the width of the original conveyor is more than twice the size of the conveyed article, the original conveyor is used to send the article in the box to the article use place, and the empty box is used for the auxiliary conveyor. Work to send it back to its original location.

[0009]

1 to 4 show an embodiment of the present invention, FIG. 1 is an end view of a conveyor showing a state in which an auxiliary roller is used, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. Perspective view of the material part,
FIG. 4 is an end view similar to FIG. 1, showing a state in which the auxiliary roller is not used.

A bracket 5 is provided on the side frame 1b of the conveyor 1.
Is attached to this, and the middle part of the link 7 is pivotally attached to the shaft 6 by the shaft 6. At the upper end of the link 7, a connecting member 8
, And a large number of supporting arms 9 are attached to the connecting member 8 in parallel as shown in FIG. Each support arm 9
A cylindrical auxiliary roller 10 which is located above the intermediate rollers 2 and 2 of the conveyor 1 and constitutes an auxiliary conveyor.
Inserted in to support this. Reference numeral 11 denotes a stopper fixed to the support arm 9 to prevent the auxiliary roller 10 from slidingly moving along the support arm 9 toward the connecting member 8. A piston rod 14 of an air cylinder 13 is pivotally attached to the lower end of the link 7 by a shaft 12. The rear end of the air cylinder 13 is pivotally attached to another bracket 16 by a shaft 15 to allow the piston rod 14 to freely drive the link 7. The bracket 16 is fixed to the side frame 1a of the conveyor. A shaft 18 pivotally attaches one end of a support rod 19 to an intermediate portion of the shafts 6 and 12 of the link 7. A small roller 20 is attached to the other end of the support rod 19, and the lower surface of the cam plate 22 attached to the lower end of the slider 21 is supported. 23 is a side frame 1b
Is a support member that is slidably supported on the intermediate portion of the support rod 19. The slider 21 is formed in a sawtooth shape, and the restraining pieces 21a corresponding to the teeth thereof are close to the end surface of the auxiliary roller 10 and regulate the position thereof.

In the transporting device constructed as described above, since the connecting member is long, the driving mechanism such as the link 7, the connecting member 8 and the supporting rod 9 by the air cylinder 13 has two sets or depending on the length of the conveyor. More than that is dispersed in the connecting material 8.

In order to provide the roller conveyor 1 with a conveyor for conveying in the opposite direction with the above-mentioned structure, the following is done (FIG. 1).

Compressed air is sent to the left end of the air cylinder 13 to push out the piston rod 14 from the air cylinder 13. As a result, the link 7 rotates counterclockwise about the shaft 6, and the connecting member 8, the supporting arm 9 connected to the connecting member 8 and the auxiliary roller 10 supported by the arm 9 are tilted to approach the roller 2 of the conveyor 1. . The supporting arm 9 and the auxiliary roller 10 fitted onto the supporting arm 9 are lowered and become parallel to the roller 2, and the auxiliary roller 10 leaves the support by the supporting arm 9 and rides on the two rollers 2 and 2, and The roller 2 is rotated in the opposite direction by frictional contact with the roller 2. At the same time, the support rod 1
9 is pulled by the link 7 and moves to the right in FIG.
0 pushes up the cam plate 22. As a result, the slider 21 rises, and the saw-toothed restraining piece 21a is exposed upward between the rollers 2 and 2 so as to approach the end surface of the auxiliary roller 10 and set its position. The auxiliary roller 10 rotates between the slider 21 and the frame member 1b, and constitutes an auxiliary conveyor whose conveying direction is opposite to that of the original roller 2.

In this way, the original roller conveyor 1
The usable width of is reduced by the amount of auxiliary conveyor installed,
If the conveyor 1 has a sufficient width, for example, the required width of 2
When the number of times is more than twice, it is possible to convey the articles contained in the box by the original conveyor 1 and operate to return the empty box to the original place by the auxiliary conveyor. In this embodiment, the support arm 9 is raised and lowered by the air cylinder 13, but the link 7 may be manually rotated.

Next, when the auxiliary conveyor is not used, the following operation is performed (FIG. 4).

Compressed air is sent to the right end of the air cylinder 13 to retract the piston rod 14 into the cylinder. The link 7 is rotated clockwise to raise the connecting member 8 and the supporting arm 9 and move away from the conveyor 1. At the same time, the support bar 19 moves to the left, the small roller 20 moves leftward along the curve of the cam plate 22, and the small roller 20 releases the support.
Falls due to its own weight, and the restraining piece 21a is drawn between the rollers 2, 2. As a result, the roller conveyor 1 can carry out unidirectional transportation using the entire width thereof.

[0017]

(Effects of the Invention) (1) The original conveyor 1 with the auxiliary roller 10
It is possible to construct an auxiliary conveyor that conveys in the opposite direction by simply placing it between the rollers 2, 2.

(2) For that purpose, the width of the original conveyor must be increased, but this is easy, and the cost is lower than the case where two conveyors are provided independently.

(3) The floor area is less occupied than when the transport conveyor is provided by a separate roller conveyor.

[Brief description of drawings]

FIG. 1 is an end view of a conveyor showing a state where an auxiliary conveyor is used.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a connecting material portion.

FIG. 4 is a sectional view of the conveyor showing a state in which an auxiliary roller is not used.

FIG. 5 is a perspective view of a part of a conventional conveyor.

6 is a right end view of FIG.

[Explanation of symbols]

 1 Roller Conveyor 1a Side Frame 1b Side Frame 2 Roller 3 Gear 4 Interlocking Gear 5 Bracket 6 Shaft 7 Link 8 Connecting Material 9 Support Arm 10 Auxiliary Roller 11 Stopper 12 Shaft 13 Air Cylinder 14 Piston Rod 15 Shaft 16 Bracket 18 Shaft 19 Support Rod 20 Small roller 21 Slider 21a Holding piece 22 Cam plate 23 Supporting material

Claims (2)

[Scope of utility model registration request] 1. A drive type roller conveyor (1) which forms a forward path by driving a plurality of rollers (2) in the same direction.
An intermediate part of a link (7) having a supporting arm (9) protruding upward from the intermediate part of each roller is coupled to the upper part, and the supporting arm (9) is attached to the supporting arm (9) as the link (7) rotates. Laura (2)
A cylindrical auxiliary roller (10) which is lifted away from or is placed between two rollers (2) and constitutes a return path is loosely fitted to the auxiliary roller (10), and the auxiliary roller (10) has a link (7) side. Is provided with a stopper (11) that restricts the movement to
A slider (2) for concealing a restraining piece (21a) that restricts the movement of the auxiliary roller (10) in the direction opposite to the link (7) from between the two rollers (2) on which the auxiliary roller (10) is mounted. 21) A reciprocating transfer device for a drive type roller conveyor which is provided so as to be able to move up and down. 2. A piston rod (14) of an air cylinder, one end of which is pivotally supported, is pivotally attached to a lower portion of the link (7), and the link (7) is provided below the pivotal attachment portion to the side frame of the link (7).
One end of the support rod (19) is pivotally attached to the support rod (19), the middle portion of the support rod (19) is slidably supported by the support member (23), and the other end of the support plate (19) is rotated by the rotation of the link (7). (2
2. The reciprocating transfer device for a driven roller conveyor according to claim 1, further comprising a small roller (20) which moves along 2) to allow or prevent the slider (21) from descending.