JPH08143118A - Accumulation conveyor - Google Patents

Abstract

PURPOSE: To provide an accumulation conveyor which is relatively simple in constitution, and capable of greatly improving the efficiency in attaching/ detaching a driving belt. CONSTITUTION: An accumulation conveyor is provided with at least one cross member 50 to be provided on a pair of conveyor frames which supports both ends of a conveyor roller and are elongated in the carrying direction, and a supporting roller 57 which is fitted to this cross member and supports a driving belt 21a to be moved in the carrying direction of an article, and a notched part 53 from which the driving belt 21a to be moved in the carrying direction passes and whose edge part is open is provided in the cross member 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulation conveyor for carrying and stopping an article placed on a conveyor roller by rotating or stopping a plurality of conveyor rollers provided along the article carrying direction.

[0002]

2. Description of the Related Art As an accumulation conveyor, an endless belt for driving (hereinafter referred to as a driving belt) that is moved in a direction opposite to the direction in which an article is conveyed and is moved in a return path in the direction in which an article is conveyed, Japanese Patent Application No. Hei 6-52, which has a pressing wheel that can be pressed to the conveyor roller side and an elastic body that can be engaged with the conveyor roller.
No. 110 proposed. The pressing wheel and the elastic body are provided for each conveyor roller and are operated by actuators.

In such an accumulation conveyor, as shown in FIGS. 10 to 11, the pressing wheel 101 is displaced toward the conveyor roller 103 by the operation of the actuator 100, and the drive belt 102 is moved to the conveyor roller side. Press to engage multiple conveyor rollers synchronously. At this time, the connecting member 104
Is oscillated around the oscillating center shaft 105, and the braking member composed of the elastic body 106 and the elastic body support 107 is displaced in the direction away from the conveyor roller by the oscillating movement of the connecting member and is not engaged with the conveyor roller. Becomes As a result, each conveyor roller rotates in conjunction with the drive belt to convey the placed article.

Further, in such an accumulation conveyor, as shown in FIGS. 10 and 11, the cross members 108 are provided at several places spaced in the article conveying direction.
Are erected on a pair of conveyor frames 109 that support the conveyor rollers 103.
The drive belt 102a that moves in the article conveying direction is supported by the rollers 110 provided on the bottom surface of the. A bracket 111 extending in the transport direction that rotatably supports the swing center shaft 105 is fixed to the surface of the cross member 108. The surface of the cross member 108 serves as a reference surface for vertically displacing the drive belt 102 with respect to the bracket 111.

To install the drive belt in the above-mentioned accumulation conveyor, after the conveyor frame 109, the cross member 108, the braking member, a motor (not shown), which is a drive source, and the like are all assembled, a long belt-like belt is installed in a predetermined passage. Through, the both ends are joined to perform endless processing. On the contrary, when removing the endless drive belt, it is the actual situation that the conveyor frame is disassembled from the assembled device or the drive belt is directly cut.

[0006]

In the accumulation conveyor having the above-mentioned structure, the endless drive belt 102 passes above and below the cross member 108 installed between the pair of conveyor frames, and Since the rollers supporting the endless drive belt in the return path are supported by the cross member 108 at both ends, when disassembling the drive belt, is it necessary to disassemble a part of the device, for example, the conveyor frame? It is essential to perform endless processing or cutting the drive belt.

An object of the present invention is to provide an accumulation conveyor having a relatively simple construction and capable of greatly improving the efficiency of the work for attaching and detaching the drive belt.

[0008]

The above object of the present invention is achieved by the following constitution. In an accumulation conveyor (20) that conveys and stops an article placed on the conveyor roller (10) by rotating or stopping a large number of conveyor rollers (10) provided in the article conveyance direction (A). An endless drive belt (21) that moves in a direction opposite to the transport direction (A) in the drive path to drive the conveyor roller (10) and moves in the return path in the transport direction (A); A support for supporting at least one cross member (50) installed on the pair of conveyor frames (11) and the drive belt (21a) attached to the cross member and moving in the transport direction (A) in the return path. Laura (57)
And the cross member (50) includes the drive belt (2) that moves in the transport direction (A) in the return path.
An accumulation conveyor, characterized in that it is provided with a notch (53) through which 1a) penetrates and whose edge is open.

[0009]

With the above-mentioned relatively simple structure, an endless belt or an endless processed drive belt can be directly attached / detached without separating the conveyor frame 11 from the accumulation conveyor. Further, since the mounting of the drive belt is simplified, the maintenance of the drive belt and its peripheral devices becomes easy.

[0010]

The present invention will be described below with reference to the illustrated embodiments.
FIG. 1 is a diagram showing an accumulation conveyor which is an embodiment of the present invention. In this figure, the accumulation conveyor 20 has a predetermined number of conveyor rollers 10 provided at predetermined intervals along the conveying direction of the articles (direction of arrow A) in the conveyor frame 11 as one section, and each section has a predetermined number. The conveyor roller 10 is provided, and conveys and stops the article placed on the conveyor roller 10 by rotating or stopping each conveyor roller 10.

In the accumulation conveyor 20, as shown in FIGS. 2 and 3, a wheel support 26 and an elastic support 29 are respectively supported by a swing center shaft 22 via a connecting member 24 so as to be relatively rotatable. It On the wheel support 26, the drive belt 21 is attached to the conveyor roller 10.
A pressing wheel 28 that can be pressed to the side is rotatably supported. The same number of pressing wheels 28 are provided corresponding to each conveyor roller 10. An elastic body 31 engageable with the conveyor roller 10 is fixed to the upper surface of the elastic body support 29. The wheel support 26 is displaced to a predetermined height by the actuator 32. The elastic body 31 is capable of contacting the plurality of conveyor rollers 10 and has a long length extending in the article conveying direction. The actuator 32 is operated by the control device 34 based on the detection signal of the sensing roller 33.

The wheel support 26 is an actuator 32.
Is displaced by the pressure wheel 28 so that the drive belt 2
When 1 is pressed to the conveyor roller 10 side and is engaged in synchronization with a predetermined number of conveyor rollers 10 in one section, the elastic body support 29 is in a state where the elastic body 31 does not engage the conveyor roller 10. Is displaced to. On the other hand, when the wheel support 26 is displaced so that the pressing wheel 28 releases the drive belt 21 and separates from the conveyor roller 10, the elastic support 29 causes the elastic support 31 to move the elastic 31 to a predetermined number of conveyors in one section. The roller 10 is displaced so as to be synchronously engaged.

The drive belt 21 is an endless belt which is movable in the direction opposite to the transport direction A (direction perpendicular to the paper surface in FIG. 2) and is constantly driven by a motor or the like not shown.
It is moved in the direction opposite to the transport direction A.

As shown in FIG. 1, FIG. 2 and FIG. 9, two cross members 5 are provided at a predetermined interval along the article conveying direction (direction of arrow A) in the conveyor frame 11.
0 is provided. The cross member 50 has a substantially U-shaped cross section, a bottom surface 51 thereof is fixed to the pair of conveyor frames 11 by a bolt 54, and a side surface portion 52 thereof is provided with a notch portion 53 having an open end. ing. A pair of support plates 5 are provided around the cutout portion 53 of the side surface portion 52.
5 and 56 are erected, and the supporting plate 5 is erected.
The support roller 57 is rotatably supported in the support grooves 55a and 56a provided in 5, 56.

The upper end of the outer peripheral surface of the support roller 57 in the vertical direction is located below the bottom surface of the protrusion 58 of the side surface portion 52 which is the upper surface 53a of the cutout portion 53.
7 and the cutout portion 53 are provided. The drive belt 21a in the return passage penetrates the notch 53 while being in contact with and guided by the outer peripheral surface of the support roller 57. By the support by the outer peripheral surface of the support roller 57,
The movement of the drive belt 21 is performed smoothly and accurately.

As shown in FIGS. 1 and 2, the swing center shaft 22 is fixed to a cross member 50 and is supported by a bracket 23 extending beyond the two cross members 50 in the transport direction A. The swing center shaft 22 penetrates the connecting member 24, and the connecting member 24 is swingable around the swing center shaft 22. As shown in FIG. 3, the ends of the connecting members 24 connected to the wheel support 26 and the elastic support 29 are in a predetermined positional relationship (in this embodiment, about 180 ° around the swing center axis 22). Phase difference). Connecting member 24
Is an integral body supported by both the wheel support 26 and the elastic support 29, but the central portion 24a does not interfere with the wheel support 26 and the elastic support 29 during swinging. .

As shown in FIGS. 4 to 7, the wheel support 26 has a length substantially equal to the length L (FIG. 1) in the transport direction of a predetermined number of conveyor rollers 10 in each section, and a connecting member. It is supported by 24 by a pin 27 so as to be relatively rotatable. The wheel support 26 is displaced to a predetermined height by the actuator 32 (FIG. 2), and swings around the swing center shaft 22 while causing relative rotation with the connecting member 24. As shown in FIG. 5, the wheel support 26 is provided with a plurality of support grooves 36 at predetermined intervals, and these support grooves 36 are provided in the pressing wheel 2 shown in FIGS. 1 and 2.
8 are rotatably supported along the transport direction A, respectively. The push wheels 28 are respectively wheel supports 26.
When the actuator 32 is displaced to a predetermined height by the actuator 32, as shown in FIG. 2, the drive belt 21 is pressed toward the conveyor roller 10 side to be synchronously engaged with a predetermined number of conveyor rollers 10 in each section. .

In the above embodiment, when the drive belt 21 is mounted, for example, after the drive belt 21 located in the drive passage is stretched over the pressing wheel 28 and the motor (not shown), the drive belt located in the return passage is provided. 21a from the opening side of the notch 53 of the cross member 50,
It is mounted on the outer peripheral surface of the support roller 57. When the drive belt 21 is detached for maintenance or replacement of the drive belt 21 itself or peripheral devices of the drive belt 21, the reverse procedure of the above-mentioned mounting operation is performed.

The actuator 32 is provided between the bracket 23 and the wheel support 26 as shown in FIG. 2, and is arranged at the center of the two swing center shafts 22 as shown in FIG. When actuated, the actuator 32 is extended upward as shown in FIG. 7 to push up the wheel support 26 by the action of compressed air supplied from a compressor or the like (not shown), and the drive belt 21 (FIG. 2).
Are pushed toward the conveyor roller 10 (FIG. 2) to be engaged with the conveyor roller 10 in synchronization. Further, the actuator 32 is contracted by the discharge of compressed air when it is not operated,
As shown in FIG. 8, the wheel support 26 is lowered to release the drive belt 21 (FIG. 2) and the conveyor roller 10 is released.
(Fig. 2).

As shown in FIG. 1, the sensing rollers 33 are located between the conveyor rollers 10 in the front of the conveying direction A (in this embodiment, the second conveyor roller 1 from the front in the conveying direction A).
0 rear side), as shown in FIG.
It is provided so as to project slightly above the upper surface,
When the article conveyed on the conveyor roller 10 passes above, the article is pushed down to a position substantially at the same height as the conveyor roller 10 to detect the article. The sensing roller 33 is rotatably supported on one end side of a base plate 35 which is rotatably supported by the conveyor frame 11 via a pivot pin 35a.

The control device 34 operates the actuator 32 based on the detection signal of the article from the sensing roller 33. That is, the control device 34 activates the actuator 32 (FIG. 7) in a state where the sensing roller 33 does not come into contact with the article conveyed on the conveyor roller 10, and the sensing roller 33 detects the sensing roller 33 depending on the article conveyed on the conveyor roller 10. When 33 is pushed down,
The actuator 32 is brought into a non-actuated state (FIG. 8).

The article conveying operation in this embodiment will be described with reference to FIGS. 2 and 3. In a state where the sensing roller 33 does not come into contact with the article conveyed on the conveyor roller 10, the control device 34 sets the actuator 32 to the operating state shown in FIG.
The conveyor roller 10 by pressing the
The wheel support 26 is displaced so as to be engaged in synchronization with. With the upward displacement of the wheel support body 26, the connecting member 24 is interlocked with the wheel support body 26 while causing relative rotation between the wheel support body 26 and the swing center shaft 2.
It swings in a clockwise direction in FIG. When the connecting member 24 is swung clockwise by a predetermined amount, the elastic body support 2
9 is moved downward so that the elastic body 31 does not engage the conveyor roller 10. As a result, the conveyor roller 10 rotates in conjunction with the drive belt 21 and conveys the placed article.

When the article is conveyed on the conveyor roller 10 to a predetermined position, the sensing roller 33 is pushed down by the article to a position substantially at the same height as the conveyor roller 10. At this time, the control device 34 brings the actuator 32 into the non-actuated state shown in FIG. 8 and displaces the wheel support 26 downward so that the pressing wheel 28 releases the drive belt 21 and separates it from the conveyor roller 10.
With the downward displacement of the wheel support 26, the connecting member 24
While producing relative rotation with the wheel support 26,
It interlocks with the wheel support 26 and swings in a counterclockwise direction in FIG. 3 by a predetermined amount. When the connecting member 24 is swung in the counterclockwise direction by a predetermined amount, the elastic body support 29 is displaced upward so as to engage the elastic body 31 with the conveyor roller 10. As a result, the conveyor roller 10 stops rotating and stops the placed article.

In the above embodiment, the cross member 50 is used.
The number is two in the transport direction A, but the number can be changed as needed.

[0025]

As described above, according to the present invention, the endless drive belt is provided through the notch portion of the cross member without separating the conveyor frame 11 from the accumulation conveyor by the above-mentioned relatively simple structure. It can be attached / detached directly at a predetermined position. Further, since the mounting of the drive belt is simplified, the maintenance of the drive belt and its peripheral devices becomes easy.

[Brief description of drawings]

FIG. 1 is a plan view showing an accumulation conveyor which is an embodiment of the present invention.

2 is a BB arrow view of the accumulation conveyor of FIG. 1. FIG.

3 is a schematic perspective view showing a connecting portion of a wheel support and an elastic support of the accumulation conveyor of FIG.

FIG. 4 is a plan view of the wheel support body, the elastic body support body, and the connecting member of FIG.

5 is a C arrow view of the wheel support body, the elastic body support body, and the connecting member of FIG. 3;

FIG. 6 is a D arrow view of the wheel support body, the elastic body support body, and the connection member of FIG. 3;

FIG. 7 is a side view showing a state when the actuator is operating.

FIG. 8 is a side view showing a state when the actuator is not operated.

9 is a perspective view of a cross member of the accumulation conveyor of FIG.

FIG. 10 is a front view showing a cross member of a conventional accumulation conveyor.

11 is a simplified side view showing a cross member of the accumulation conveyor of FIG.

[Explanation of symbols]

 10 Conveyor Roller 20 Accumulation Conveyor 21 Drive Belt 22 Swing Center Shaft 24 Connecting Member 26 Drive Member (Wheel Support) 28 Drive Member (Pressing Wheel) 29 Braking Member (Elastic Body Support) 29a Projection 29b Bottom 29c Opening 31 braking member (elastic body) 32 actuator 33 detection means (sensing roller) 34 control means (control device) 40 coil spring 50 cross member 51 cross member bottom surface 52 cross member side surface 53 notch portion 54 bolt 55 support plate 56 support Plate 57 Support roller 58 Protrusion A Article transport direction

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Eiichi Kudo 8-19-20 Higashisuna, Koto-ku, Tokyo Toyo Kanetsu Co., Ltd.

Claims (1)

[Claims] 1. Accumulation for carrying and stopping an article placed on a conveyor roller (10) by rotating or stopping a large number of conveyor rollers (10) provided along the article carrying direction (A). Conveyor (2
0), an endless drive belt (21) that moves in the drive path in the opposite direction to the transfer direction (A) to drive the conveyor roller (10) and moves in the return path in the transfer direction (A). ), At least one cross member (50) installed on the pair of conveyor frames (11), and the drive belt (21) attached to the cross member and moving in the transport direction (A) in the return path.
a) supporting roller (57) for supporting a), and the cross member (50) is a notch through which the drive belt (21a) moving in the transport direction (A) in the return passage penetrates and an edge is opened. An accumulation conveyor, characterized in that a section (53) is provided.