JP2783171B2 - Roller roller conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrapping roller conveyor.

[0002]

2. Description of the Related Art The following devices are known as a conventional roller driving device for a roller conveyor. That is, a large number of carrier rollers provided rotatably with their axes oriented in the left and right side walls on the left and right side walls of the base frame, and under each of these carrier rollers, the axis of the carrier roller when viewed from a plane. A transmission roller, which is provided so that it can swing up and down so that the shaft center overlaps, and can contact and separate from the carrier roller, a chain wheel fixed to the rotation shaft of these transmission rollers, and these chain wheels engage It is known to have an endless drive chain having an upper straight portion that meshes with the front and rear chain wheels that are rotatable so that the axis around which the drive chain extends is directed in the left-right direction.

[0003]

2. Description of the Related Art With the above construction, the drive roller is pressed against the carrier roller while the drive chain is constantly driven, so that the movement of the drive chain is transmitted to the carrier roller via the transmission roller. Can be rotated, while the rotation of the carrier roller can be stopped by preventing the transmission roller from hitting the carrier roller. Since the roller driving device has an advantage that the carrier roller can be individually rotated and stopped, by combining with an article detector or the like, an article being conveyed stops following articles before it collides with a preceding article. That is, it is suitably used for a roller conveyor having a mechanism in which a subsequent article does not push a front article or collide with a preceding article.

[0004]

Disadvantages of the prior art The conventional roller driving apparatus has the following disadvantages. That is, since the roller driving device engages and meshes the chain wheel of the transmission roller with the upper linear portion of the drive chain, the upper linear portion of the drive chain and the axis of the chain wheel of the transmission roller are structurally different from each other. Must be perpendicular to the plane, so that the upper straight part of the drive chain and the axis of the carrier roller (this overlaps with the axis of the chainwheel of the transmission roller in a plane) Had to be perpendicular to the plane. Therefore, when the roller driving device is applied to a width-shifting roller conveyor (a plurality of carrier rollers are provided on a side wall of a base frame so as to be rotatable in a state where the axis is inclined in the front-rear direction), The upper straight portion must be installed so as to be perpendicular to the axis of the carrier roller, that is, at a predetermined angle with respect to the center line in the front-rear direction when viewed from a plane. As a result, the right and left positions of each power transmission roller and its chain wheel must be shifted along the upper straight portion of the drive chain, which is disadvantageous in that it is troublesome. Also,
If the width-conveying roller conveyor is considerably long, all carrier rollers can be driven unless multiple drive chains are installed so as to form a predetermined angle with respect to the center line in the front-rear direction when viewed from the plane. There was a disadvantage that there was no.

[0005]

The present invention employs the following means to solve the above-mentioned drawbacks. The present invention
A plurality of rollers are rotatably provided on the side wall of the base frame with the axis inclined in the front-rear direction, and a drive rotation shaft is provided rotatably below the roller group with the axis directed in the front-rear direction. , the drive-rotation shaft and the respective roller or two rollers, it is gearing provided that can take moving force transmission state and the power non-transmission state, the transmission device, roller
The bracket provided on the lower side of the
It is provided movably so that it can contact and separate from the roller.
Transmission roller and fixed to it concentrically with the transmission roller.
Wheel, drive roller wheel and drive shaft
With an endless belt wrapped around the wheel
The bracket has a planar wedge-shaped spacer
Attached to the side wall of the base frame through the
The center of the axis and the axis of the roller should be parallel when viewed from a plane.
It is something that has been done .

[0006]

The present invention has the following functions. Despite the fact that the axis of the roller and the axis of the drive rotary shaft are not perpendicular to each other when viewed from above, the rotation of the drive rotary shaft is controlled using the flexibility and twistability of the endless belt. Can be transmitted smoothly and reliably.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; In this specification, the front means the right side in FIG. 1, the rear means the left side in the figure, and the left means the upper side in FIG.
The right means the lower side of the figure.

[0008] The roller conveyor device 1 comprises a first roller conveyor 2 followed by a width roller conveyor 3
And a second roller conveyer 4 following this.

The first roller conveyor 2 and the second roller conveyor 4 include left and right side walls 8 constituting a base frame 7,
It has a roller shaft 14 that is passed to the bearings 10 and 11 provided on the side wall 8 with the axial center directed in the left-right direction, and a carrier roller 13 rotatably fitted to the roller shaft 14. I have.

[0010] The width shifting roller conveyor 3 includes a base frame 7.
Left and right side walls 8, a roller shaft 14, which is provided with bearings inclined in the front-rear direction to bearings 10 and 11 provided on these side walls 8, and rotatably fitted to these roller shafts 14. Carrier roller 13 (the roller referred to in the claims).

The one bearing 10 has one roller shaft 1.
4 is supported, while the other bearing 11 is
The roller shaft 14 is supported. The bearing 11 is formed integrally with a bracket 19 described later. The bearings 10 and 11 are made of synthetic resin or the like.

The roller conveyor device 1 has a plurality of zones 5 divided at predetermined intervals longer than the articles W along the conveying direction, and these zones 5 are supported by a required number of bearings 11. There are even numbers of carrier rollers 13. The two carrier rollers 13 supported by the same bearing 11 form a set.

Next, the transmission 18 will be described. Two carrier rollers 1 supported on the same bearing 11
3 as a set, and is positioned below the pair of carrier rollers 13, that is, a rotation shaft 23 (described later) is provided at the center between the shaft centers 13 </ b> L of the carrier rollers 13.
The first roller conveyor 2 and the second roller conveyor are attached to the side wall 8 of the width-shifting roller conveyor 3 via a flat wedge-shaped spacer 17 which will be described in detail later. A transmission 18 having a bracket 19, which is mounted directly on the side wall 8 of the device 4, will now be described. The transmission 18 has a bracket 19 integrally formed with the bearing 11, and a bearing 22 is provided on the bracket 19 so that the bearing 22 can swing up and down by a pivot 21 having an axis parallel to the mounting surface 20. And
A rotating shaft 23 is rotatably fitted to the bearing 22 so that the axis is orthogonal to the mounting surface 20.
The transmission roller 24 and the wheel 25 are fitted and stopped at 3. With such a configuration, the transmission roller 24 is caused to swing upward by causing the transmission roller 24 to abut on a pair of front and rear carrier rollers 13.
Can be transmitted to a pair of front and rear carrier rollers 13, while the bearing 22 is swung downward to separate the transmission roller 24 from the carrier roller 13. 13 can be prevented from being transmitted. In the present embodiment, two carrier rollers 13 can be rotated by one transmission roller 24 by bringing the transmission roller 24 into contact with a pair of front and rear carrier rollers 13, thereby reducing the number of transmission rollers 24. The transmission roller 24 is provided directly below the carrier roller 13, and one transmission roller 24 is provided.
Alternatively, only one carrier roller 13 may be rotated. The axis of the bearing hole of the bearing 11 for the roller shaft 14 is parallel to the axis 23L of the rotating shaft 23.

The brake shoe 2 is provided on the upper surface of the oscillating bearing 22 opposite to the transmission roller 24 with respect to the pivot 21.
8 are provided. When the transmission roller 24 swings downward and the carrier roller 13
When the contact with the carrier roller 13 is stopped, the carrier roller 13 swings upward like a seesaw and contacts the carrier roller 13 to prevent the carrier roller 13 from rotating.

An actuated piece 29 is provided below the bearing 22 in a hanging manner. The actuated piece 29 is pushed below the pivot 21 by an actuating device 30 such as a linear solenoid provided on the bracket 19. The transmission roller 24 can be brought into contact with the carrier roller 13. When the operated piece 29 is not pushed by the operating device 30, the transmission roller 24 is separated from the carrier roller 13 by its own weight and the tension of the round belt 41 described later. The transmission roller 24 is the carrier roller 13
Is no longer in contact with the brake shoe 28 as described above.
Abuts on the carrier roller 13 to prevent the rotation of the carrier roller 13. That is, with such a configuration, it is possible to rotate the carrier roller 13 with one transmission device 18 or to prevent the rotation.

The spacer 17 will be described in more detail. Since the bracket 19 of the transmission 18 is adapted to be directly attached to the side wall 8 of the first roller conveyor 2 and the second roller conveyor 4, the bracket 19 of the transmission 18 is attached to the side wall 8 of the roller conveyer 3. It is necessary to interpose a spacer 17 having an opening angle θ (see FIG. 6) corresponding to the inclination angle θ (see FIG. 1) of the carrier roller 13 of the width approaching roller conveyor 3. By doing so, the axis 23L of the rotating shaft 23 is changed to the axis 13L of the carrier roller 13.
And can be made parallel when viewed from a plane. A bolt insertion hole 16 is formed in the spacer 17.

The bracket 19 of the transmission 18 is attached to the side wall 8.
When the nut is fitted in the T-groove, the bolt is screwed through the bolt insertion hole 16 formed in the bracket 19 and the bolt insertion hole 16 of the spacer 17 when the spacer 17 is interposed between the nut and the nut.

An axial center 36 is provided on a bearing 35 provided on a connecting bar 34 which is provided at predetermined intervals in the front-rear direction to the left and right side walls 8.
A drive rotation shaft 36 which is always rotating with L directed in the front-rear direction is rotatably fitted so as to be located below the transmission 18, more specifically, below the wheel 25. As shown in FIG. 2, the driving rotary shaft 3 of the first roller conveyor 2
6 and the drive rotating shaft 36 of the width shifting roller conveyor 3 are power-coupled by a transmission device 38 including a timing belt and the like, and the drive rotating shaft 36 of the width shifting roller conveyor 3 and the drive rotating shaft 36 of the second roller conveyor 4 are connected to each other. All of the drive rotary shafts 36 are rotated by rotating one of the drive rotary shafts 36 by a motor (not shown) that is rotatable in the forward and reverse directions. It has been made like that. The driving rotary shaft 36 has a wheel 3 corresponding to the wheel 25.
A round belt 41 made of synthetic resin such as urethane having slight elasticity (endless belt in the claims) is stretched around the wheel 37 and the wheel 25. With such a configuration, the round belt 41 is stretched in a state where the transmission roller 24 is in contact with the carrier roller 13, and the rotation of the drive rotation shaft 36 is transmitted to the transmission roller 24, while the transmission roller 24 is 13, the round belt 41 is loosened so that the rotation of the drive rotation shaft 36 is not transmitted to the transmission roller 24. "Slightly elastic"
That is, the round belt 41 slightly expands and contracts without impairing its original transmission function.

An article detector (not shown) is provided at the front of each zone 5 of the base frame 7. As the article detector, transmission-type or reflection-type sensors using signals of light, radio waves, sound waves, and the like, mechanical switches by contact with the article W, and the like can be used. When the article W is detected by the article detector, all the operating devices 30 belonging to the zone 5 subsequent to the zone 5 to which the article detector belongs are in the non-operating state (the state in which the operated piece 29 is not pressed). When the transmission roller 24 does not hit the carrier roller 13 and the article W is not detected by the article detector, the operation device 30 is set to the operation state (the state where the operated piece 29 is pressed), and the transmission roller 24 is set to the carrier roller. 13.

The roller conveyor 1 has left and right guide rails 43 so that the article W does not fall off the roller conveyor 1.

[0021]

Next, the operation of the embodiment will be described. When all the article detectors (not shown) do not detect the article W, all the carrier rollers 13 in all the zones 5 are rotating. When the article detector detects the article W being conveyed, the zone 5 following the zone 5 where the article detector is located is located.
All the operation devices 30 are inoperative, and the rotation of all the carrier rollers 13 in the subsequent side zone 5 is stopped. That is, the subsequent article W is temporarily stopped just before the collision if the article W is immediately ahead. Therefore, the article W pushes the article W in front or the article W in front.
There is no collision. Article W in zone 5 at the leading position
Is sent out, the operating device 30 in the succeeding zone 5 is restored to the initial state, and the article W once stopped as described above is sent forward again. The article W that has been transported along the width-shifting roller conveyor 3 and has reached the front end of the width-shifting roller conveyor 3 is moved to the left by the width-shifting action of the width-shifting roller conveyor 3. This width adjustment is significant when a label is attached to the article W or a barcode attached to the article W is read by a barcode reader.

[0022]

[Modifications and the like] Modifications and the like will be described below. (1) Even if the spacer 17 has elasticity,
It may not have. When the spacer 17 is elastic, noise and vibration can be absorbed thereby.

[0023]

According to the present invention, the following effects can be obtained by the above-described configuration. Despite the axis of the axis and the drive axis of rotation of b Ra is in a state that is not orthogonal when viewed from above, by utilizing the property of flexibility, torsional ease of endless belts, the rotation of the driving rotary shaft It can be transmitted smoothly and reliably to the rollers. As a result, the disadvantages of the conventional device can be eliminated. Using a flat surface shape wedge-shaped spacer, the transmission, as the axis of the transmission roller are parallel when viewed from the axis and the plane of the roller, Ru can be easily attached.

[Brief description of the drawings]

FIG. 1 is a simplified plan view of an essential part showing an embodiment of the present invention, with intermediate portions omitted.

FIG. 2 is a schematic plan view showing a drive system of the embodiment.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III of FIG. 1 without an intermediate portion.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 3;

FIG. 6 is a perspective view of a spacer.

[Explanation of symbols]

 3 Roller conveyer 7 Base frame 8 Side wall 13 Carrier roller (roller) 13L Center of carrier roller 1317 Spacer  18 Transmission19 Bracket 23 Rotation axis 24 Transmission roller 25 wheels  36 Drive rotation shaft 36L Shaft center of drive rotation shaft 3637 wheels  41 Round belt (endless belt)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65G 13/00-13/12 B65G 47/28

Claims (1)

(57) [Claims] 1. A plurality of rollers are rotatably provided on a side wall of a base frame with an axis inclined in the front-rear direction, and a driving rotation shaft is directed below the roller group so that the axis is oriented in the front-rear direction. rotatably provided on the drive-rotation shaft and the respective roller or two rollers, transmission is provided which can take the dynamic force transmission state and the power non-transmission state, the transmission instrumentation
The bracket is located below the roller and the bracket
It is provided on the bracket so that it can swing up and down.
Transmission roller that can be separated and concentric with the transmission roller
And the wheel of the transmission roller
Endless between the wheel and the wheel of the drive shaft
A belt, and the bracket has a planar shape.
Attached to the side wall of the base frame via a rib shaped spacer
When the transmission roller axis and the roller axis are viewed from a plane
Roller conveyer that is made parallel .