JPH08244938A - Accumulation conveyor - Google Patents

Abstract

PURPOSE: To surely decelerate/stop an article in each section by means of a comparatively simple structure while reducing a cost. CONSTITUTION: When a speed reducing plate 40 is separated from conveying rollers 30 in each section, each of the conveying rollers 30 is moved in the conveying direction A according to the movement of a chain 20, and as a result, a placed article 10 is conveyed. When the speed reducing plate 40 is engaged with the conveying rollers 30 from the upper side, each of the conveying rollers 30 is rotated counterclockwise, and its upper face is moved in the reverse direction to that of the moving direction of the chain 20 according to the movement of the chain 20, and as a result, the placed article 10 is decelerated or stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulation conveyor that conveys an article placed on a conveying roller in a predetermined direction as a chain moves, and decelerates or stops the article by rotating the conveying roller.

[0002]

2. Description of the Related Art Conventionally, an article placed on a carrying roller is
As a chain roller type conveyor that conveys in a predetermined direction as the chain moves, the conveying roller is brought into contact with an accelerating plate arranged below the conveyor to accelerate the article, and the reversing roller is arranged below the conveyor. There is one in which the conveying roller is rotated in the reverse direction through the intermediate roller to bring the article into deceleration by bringing it into contact with the speed reducing plate disposed in (see Japanese Utility Model Publication No. 61-41691). Figure 6
Referring to FIG. 5, the carrying roller 50 is a horizontal shaft 53 that is rotatable by connecting the link plates 52 of the chain 51.
In addition, the articles 54 are fixed to each other, and the article 54 can be placed thereon, and the articles 54 move as the chain 51 moves. The reverse rotation roller 55 is the link plate 52 of the chain 51.
The shafts 56 are respectively fixed to the horizontal shafts 56 rotatably supported at the lower part, and are pressed upward by the reduction plate 57 to come into contact with the intermediate roller 58. The intermediate rollers 58 are
It is fixed to the horizontal shaft 53 and arranged coaxially with the carrying roller 50, and interlocks with the carrying roller 50 via the horizontal shaft 53.

In such a conveyor, the carrying roller 50 moves in the direction of the arrow as the chain 51 moves, and carries the placed article 54. Then, the transport roller 50 is rotated counterclockwise in FIG. 6 with the movement of the chain 51 by the contact of an accelerating plate (not shown), and accelerates the placed article 54. The transport roller 50 is rotated in the clockwise direction in FIG. 6 along with the movement of the chain 51 via the intermediate roller 58 by the reduction roller 57 coming into contact with the reverse rotation roller 55, and the placed article 54 is placed. Slow down.

[0004]

In the above-mentioned conventional chain roller type conveyor, in order to decelerate the article 54 placed on the carrying roller 50, in addition to the speed reducing plate 57, the reverse rotation is carried out separately from the carrying roller 50. It is necessary to provide the roller 55 for. Therefore, there is a problem that the structure becomes complicated, the number of parts and the number of assembling steps increase, and an increase in cost cannot be avoided.

It is an object of the present invention to have a relatively simple structure, which can reduce the number of parts and the number of assembling steps and can reduce the cost, while ensuring the articles in each section. Can be slowed down or stopped,
Accordingly, it is an object of the present invention to provide an accumulation conveyor capable of performing desired accumulation control for each section.

[0006]

The above object of the present invention is to provide a chain (20) that moves along a predetermined path and a plurality of chains (20) that are rotatable at predetermined intervals in the longitudinal direction of the chain (20). An article (10) is provided so that it can be placed on it, and a transport roller (30) that moves in a predetermined direction (A) with the movement of the chain (20) and a predetermined number of transport rollers (30) form one section. A speed reduction plate (40) that is provided for each section and is vertically controlled to be engageable with the transport roller (30) from above, and the speed reduction plate engages with an upper surface of the transport roller; The transport roller (30) is rotated along with the movement of the chain (20) so that the upper surface of the transport roller (30) moves in the direction opposite to the moving direction of the chain (20), and is placed on the transport roller (30). The goods (10) It is achieved by accumulation conveyor, characterized in that to speed or stopped.

[0007]

In the accumulation conveyor according to the present invention, the article placed on the conveying roller is conveyed in a predetermined direction as the chain moves, and the conveying roller is rotated by the engagement of the speed reduction plate in each section. Is decelerated or stopped by. That is, the transport rollers in each section transport the placed article by moving in a predetermined direction as the chain moves. Further, the transport roller is engaged with the speed reduction plate from above, so that the upper surface of the transport roller moves in a direction opposite to the moving direction of the chain as the chain moves, thereby decelerating or stopping the article.

[0008]

The present invention will be described below with reference to the illustrated embodiments.
1 and 2 are schematic side views showing an accumulation conveyor which is an embodiment of the present invention. FIG. 1 shows a state when an article is conveyed, and FIG. 2 shows a state in which the article is decelerated or stopped. In these figures, the article 10 placed on the transport roller 30 is transported in a predetermined transport direction (arrow A direction) as the endless chain 20 moves, and the speed reduction plate 40 is moved in each section. The conveyance roller 30 is rotated in the counterclockwise direction in FIG. 2 due to the engagement, whereby the conveyance roller 30 is decelerated or stopped.

The chain 20 includes a pair of sprockets 21.
The sprocket 21 is wound around in between, and as one of the sprockets 21 is rotated by a motor or the like (not shown),
It rotates clockwise in FIG. This allows the chain 20
Is guided along a chain guide 12 (FIG. 5) provided on the conveyor frame 11 (FIG. 5) and moved along a predetermined route (in this embodiment, an elliptical route in a side view).

A plurality of transport rollers 30 are provided in the chain 20 in the longitudinal direction at predetermined intervals. That is, as shown in FIGS. 3 and 4, the transport roller 30 includes every other connecting pin 2 in the longitudinal direction among the connecting pins 23 that are rotatable by connecting the link plates 22 of the chain 20.
3 are fixed to the respective chains 3 and are rotatable with respect to the chain 20. On the upper surface of each of the transport rollers 30, the article 10
Can be placed, and the transport rollers 30 transport the loaded articles 10 by moving in the transport direction A as the chain 20 moves.

Referring to FIGS. 3-5, the reduction plate 40 is
A predetermined number (four in this embodiment) of conveying rollers 30 are provided for each section, and are arranged above one end (the lower end in FIG. 3) of the conveying roller 30 in the longitudinal direction. . Each reduction plate 40 includes an air cylinder 41
(Fig. 5) Cylinder rod 42 tip (lower end in Fig. 5)
It is fixed to and can move up and down by advancing and retracting the cylinder rod 42 accompanying the operation of the air cylinder 41 and the like.
That is, each of the reduction plates 40 is lowered to a predetermined position by the protrusion of the cylinder rod 42 associated with the operation of the air cylinder 41 and the like, and is engaged with the upper surface of the transport roller 30 with a required pressure. As a result, the deceleration plate 40 moves the transport roller 30 along with the movement of the chain 20 so that the upper surface of the transport roller 30 moves in the direction opposite to the moving direction of the chain 20.
4 is rotated counterclockwise in FIG. 4 to decelerate or stop the article 10 placed on the transport roller 30.

The operation of this embodiment will be described. Conveyor roller 3
The article 10 placed on 0 is transported in the transport direction A as the chain 20 moves, and in each section,
The rotation of the transport roller 30 due to the engagement of the speed reduction plate 40 is decelerated or stopped. That is, in each section, the conveyance roller 30 is in a state in which the reduction plate 40 is separated,
By moving in the transport direction A along with the movement of the chain 20, the placed article 10 is transported. Further, each of the transport rollers 30 is engaged with the speed reduction plate 40 from above, so that the upper surface moves counterclockwise in FIG. 4 so that the upper surface moves in the direction opposite to the moving direction of the chain 20 as the chain 20 moves. It rotates to decelerate or stop the placed article 10.

When the conveying roller 30 is rotated counterclockwise in FIG. 4, whether the article 10 on the conveying roller 30 is decelerated or decelerated to stop, that is, the deceleration of the article 10 is mainly , The moving speed of the chain 20, the diameter of the transport roller 30, and the magnitude of the frictional force generated between the reduction plate 40 and the upper surface of the transport roller 30. Therefore, by appropriately changing these conditions, the article 1
A deceleration of 0 can be adjusted. For example, in order to increase or decrease the frictional force generated between the reduction plate 40 and the upper surface of the conveyance roller 30, the friction coefficient of the surface of the reduction plate 40 is changed or the reduction plate 40 is engaged with the conveyance roller 30. The pressing force of the air cylinder 41 or the like may be adjusted.

As described above, according to the above-described embodiment, the speed reducing plate 40 provided for each section of the transport roller 30 is provided.
However, by engaging the conveying roller 30 from above, the conveying roller 30 is rotated in the counterclockwise direction in FIG. 4 as the chain 20 moves, and the placed article 10 is decelerated or stopped. At 10, the article 10 can be surely decelerated or stopped, and thus desired accumulation control can be performed for each section. Moreover, it has a relatively simple structure, and the reversing roller 55 is different from the conventional one.
Since it is not necessary to provide (FIG. 6) and the intermediate roller 58 (FIG. 6), the number of parts and the number of assembling steps can be significantly reduced, and the cost can be reduced.

[0015]

As described above, according to the present invention, the speed reducing plates provided for the respective sections of the carrying roller engage with the carrying roller from above, so that the carrying roller moves with the movement of the chain. Since the upper surface rotates so that the upper surface moves in the direction opposite to the moving direction of the chain, the article can be surely decelerated or stopped in each section, and thus desired accumulation control can be performed in each section. . Moreover, the structure is relatively simple, and the number of parts and the number of assembling steps can be significantly reduced, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a state of an accumulation conveyor according to an embodiment of the present invention when an article is conveyed.

FIG. 2 is a schematic side view showing a state where the articles of the accumulation conveyor of FIG. 1 are decelerated or stopped.

3 is a plan view showing a section of the accumulation conveyor of FIG. 1. FIG.

FIG. 4 is a view on arrow B of FIG.

FIG. 5 is a view taken in the direction of the arrow C in FIG. 3;

FIG. 6 is a side view showing a part of a conventional chain roller type conveyor.

[Explanation of symbols]

 10 article 20 chain 30 transport roller 40 speed reducer A transport direction

Claims (1)

[Claims] 1. A chain (20) moving along a predetermined path, and a plurality of chains (20) provided at predetermined intervals in the longitudinal direction of the chain (20) so as to be rotatable and mountable with articles (10), respectively. , A conveying roller (30) that moves in a predetermined direction (A) as the chain (20) moves, and a conveying roller (30) that is provided for each section with a predetermined number of conveying rollers (30) as one section. 30) and a speed reducing plate (40) which is vertically movable so as to be engageable from above, and the speed reducing plate engages with the upper surface of the conveying roller, so that the upper surface of the conveying roller (30) is connected to the chain (20). ) The conveyor roller (30) is rotated along with the movement of the chain (20) so that the article (10) placed on the conveyor roller (30) is decelerated or stopped. Characterized by Accumulation conveyor.