JPS617128A - Load controlling method in conveyor - Google Patents

Abstract

PURPOSE:To make accurate stopping control of conveyed load attainable, by installing a load detecting device in the specified stop position, while forming rotary conveying bodies in front of the stop position rotative reversibly, in case of a conveyor provided with these conveying rotary bodies of rollers or the like in parallel. CONSTITUTION:In case of a device which connects both ends of outgoing and incoming conveyors 1 and 2 parallelly set up with their conveying directions reversed by means of a transfer unit 3, this unit 3 makes a guide 10 move along a guide rod (unillustrated herein) with engagement between a crank roller 19 and a guide groove 9 when it rotates a crank arm 18. And, with engagement of a spur gear 24 pivoted on an end part of the guide 10 with a rack 25, it shifts up to a broken line position corresponding to the start end side of the conveyor 2 while rotating a conveyor 29 installed in an upper end of a fulcrum shaft 22. In this case, the conveyor 29 is provided with plural motor rollers 33b and a motor roller 33a capable of rotation for both directions at the front end and in addition a detecting device 36 is installed in the rear of the motor roller 33a.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for controlling conveyed objects on a conveyor,
In particular, it relates to those that stop and restart conveyed objects without using a movable stopper or the like.

[Technical background of the invention]

For example, in a roller conveyor V, it is possible to stop the conveyed object on the conveyor at a predetermined position, restart the conveyed object that has stopped at this stop position, or allow the conveyed object to pass without stopping at the stop position. In such cases, a movable stopper is installed on the conveyor, but depending on the usage conditions of the conveyor, there may not be space to install a movable stopper, and in such cases, it is necessary to stop the roller drive and cover it. J: The conveyed object was stopped at a stop position and the conveyed object was started again or passed by driving the rollers.

[Problems with background technology]

However, as mentioned above, the method υ′ of stopping the conveyed object by stopping the drive of the rollers has the problem that the conveyed object does not stop accurately at a predetermined stopping position and deviates back and forth from the stopping position. It was not practical and could not be implemented in cases where positional accuracy was required.

[Purpose of the invention]

The present invention was made in view of the above-mentioned point J:
In a conveyor in which rotary conveying bodies such as the former RA are arranged side by side on a shaft rack, it is possible to accurately stop the conveyed object on the conveyor at a predetermined stopping position without using a movable stopper, etc. The purpose is to cover the vehicle so that it can be restarted from a stopped position.

[Summary of the invention]

The present invention provides a conveyor 2 in which a plurality of rotating bodies 33a and 33b for conveyance such as motor rollers are arranged in parallel on a frame 32.
No. 9 relates to an all-control method for conveyed objects, which accurately stops conveyed objects on a conveyor A729 at a predetermined position and restarts the transported objects from the stopped position without using a movable stopper or the like. , a conveyance object detection means 36 such as a limit switch for the above-mentioned stop position.
and a transport rotary body 33a at the front of the stop position.
is configured to be rotatable in forward and reverse directions, and when the detection means 36 detects the conveyed object conveyed to the stop position, the drive of the conveying rotary body 33'b at the stop position is stopped, thereby moving the conveyed object to the stop position. By reliably transporting the object up to the stop position and preventing it from stopping before the stop position, and furthermore, by driving the transport rotating body 33a in front of the stop position in reverse rotation, the object is moved forward of the stop position due to inertia, etc. The conveyance object is stopped at the stop position accurately by preventing the conveyance from occurring, and the conveyance object stopped at the stop position is driven in the forward rotation of the conveyance rotary body 33b at the stop position and conveyed at the front part of this stop position. This feature is characterized in that the vehicle is restarted from the stopped position by driving the rotating body 33a in the forward direction.

[Embodiments of the invention]

An embodiment of the method for controlling conveyed objects on a conveyor according to the present invention will be described based on the drawings.

In Fig. 1, 1 is the outbound conveyor, 2 is the inbound conveyor
7, each of these containers X71.2 is arranged parallel to C with its conveying direction reversed. The terminal end of Al1 and the starting end of the return conveyor 2 are connected to the forward conveyor 2 by a transfer device 3.

As shown in FIGS. 2 and 3, the transfer device 3 includes:
A pair of guide rods 7.8 are supported on one side of the support frame 6 in parallel with each other and oriented in a horizontal direction perpendicular to the conveying direction of each of the conveyors 1 and 2.
．． 8, a crank guide 10 having a guide groove 9 formed on its lower surface is supported so as to be movable in a horizontal direction orthogonal to the guide rod 7.8 via a slide sleeve 11.12. There is.

Further, a motor 1 with a reducer 15 is mounted on one side of the support frame 6.
6 is supported, and a crank arm 18 is attached to the output shaft 17 of a reducer 15 which is horizontally rotated by this motor 16, and a crank roller 19 is rotatably attached to the tip -L portion of this crank arm 18. (), and this crank roller 19 is engaged with the guide groove 9 of the crank guide 10.

Therefore, when the crank arm 18 is rotated by the motor 16, the crank guide 10 moves along the guide rod 7.8 due to the engagement between the crank roller 19 and the guide groove 9.

A support shaft 22 is provided upright at the end of the crank guide 10 via a bearing 23 so as to be horizontally rotatable, and a spur gear 24 is mounted on this support shaft 22. A rack 25 meshing with the gear 24 is supported on the other side of the support frame 6 parallel to the guide rod 7.8.

Therefore, when the crank guide 10 moves, the spur gear 24 and the rack 25 engage with each other, causing the support shaft 22 to rotate.

The upper end of the support shaft 22 is connected to the support frame 6 through the through hole 28.
A conveyor 29 is installed at the upper end of this support shaft 22.
is installed.

The above-mentioned competition 19 has a plurality of, for example, six motor rollers 33a, which are rotatably driven as conveying rotors, attached to the support shaft 22 between both sides of the frame 32.

33b are arranged in parallel on a shaft frame, and a motor roller 33a at the front end thereof is formed to be able to rotate in forward and reverse directions.

Then, a stop position of the conveyed object is set on each motor [1-ra 33b at the rear of the motor roller 33a at the front end, and the front end of this stop position, that is, the motor roller 33a
A limit switch 36 as a detection means is disposed at the rear of the sensor.

Next, the operation will be explained.

Although FIG. 4 is an explanatory diagram of the operation, in order to make the operation easier to understand, the relationship between the members and the like is ignored.

Figures 1 to 3 and Figure 4a show a receiving state, that is, a state in which the terminal end of the outbound conveyor 1 and the conveyor 29 of the transfer device 3 are connected in the same conveyance direction, and a conveyed object (not shown) is From the end of the outbound conveyor 1 = J conveyor 29
When the conveyed object is carried into the conveyor 29, it is completely supported on the conveyor 29 by each motor roller 33b at the stop position, which has been driven in forward rotation in advance, and when the conveyed object reaches the front end of the stop position, the limit switch 36 turns off the conveyor. It is activated by detecting the front end of an object, and the drive of each motor roller 33b at the stop position is stopped by this detection signal.

Even if each motor roller 33b at this stop position stops driving, the conveyed object tries to move further due to inertia, but it comes into contact with the front motor roller 33a at the stop position, which has been previously driven in reverse rotation. forward movement is prevented, and the conveyed object is accurately positioned at each motor roller 3 at the stop position.
Stop on 3b.

Next, the crank arm 18 is rotated clockwise (in plan view) by the motor 16, and as a result, the crank roller 19 and the guide groove 9 engage with each other, so that the crank guide 10 via a support shaft 22, the conveyor 29 moves along the guide rod 7.8 from the outbound conveyor 1 side to the return conveyor 2 side and is connected to the starting end of the return conveyor 2. Then, due to the meshing of the spur gear 24 and the rack 25, the conveyor 29 mounted on the support shaft 22 rotates half a turn in the counterclockwise direction, and the conveying direction of the conveyor body 29 coincides with the conveying direction of the return conveyor 2. .

Next, each motor roller 3 between the stop positions of the conveyor 29
3b is rotated in the forward direction, the motor roller 33a at the front of this stop position is switched to the forward rotation drive, and the conveyed object is restarted and carried out from the C conveyor 29 to the starting end of the return conveyor 2.

Then, when the item is carried out, the crank arm 18 is rotated counterclockwise by the motor 16, and thereby,
As shown from e to a in FIG. 4, the engagement between the crank roller 29 and the guide groove 9 causes the conveyor 29, which is attached to the crank guide 10 via the support shaft 22, to be attached to the guide rod 7.8. The conveyor attached to the support shaft 22 moves along the return path from the conveyor 2 side to the outbound conveyor 1 side and connects to the terminal end of the outbound conveyor 1. 29 rotates half a turn clockwise, the conveyance direction of the conveyor 29 matches the conveyance direction of the outbound conveyor 1, and furthermore, the motor roller 33a at the front end of the conveyor 29 switches to reverse rotation drive, returning to the original state. Waiting for the next conveyance.

In addition, in the above explanation of the operation, the conveyor 29 is in the standby state.
Although it is assumed that the motor roller 33a at the front end of the motor roller 33a is driven in reverse rotation in advance, the reverse rotation drive of the motor roller 33a may be started when the limit switch 36 detects the conveyed object.

This concludes the description of the embodiments, but when implementing the present invention, the present invention is not limited to an independent conveyor such as the conveyor 29 of the transfer device 3 described above. In addition, in this case, when it is necessary to selectively stop the transported objects, the drive of the transport rotary body at the stop position is stopped only for the transported objects that need to be stopped. At the same time, the conveying rotary body at the front of the stop position is driven to rotate in reverse, and for other conveyed objects, the forward rotation of the conveying rotary body at the stop position is continued, and the conveying rotary body at the front of the stopped position is The conveyed object may be passed by being driven to rotate in the forward direction.

Note that the conveyance rotating body is not limited to the motor rollers 33a and 33b that are driven to rotate, but may be one that is driven to rotate by other driving means.

[Effects of the Invention] As described above, according to the present invention, the drive of the conveying rotary body at the stop position is stopped after the conveyed object has been conveyed to the stop position, so that the conveyed object can be reliably conveyed to the stop position. Even if the conveying rotor at the stop position stops driving, the conveyed object will continue to move forward due to inertia.
This unnecessary movement of the conveyed object is prevented by the reverse rotation of the conveyance rotary body in front of the stop position, so that the conveyed object can be accurately stopped at the stop position without using a stopper or the like. Further, the conveyed object stopped at the stop position can be restarted by forward rotational driving of the conveying rotary body at the stopped position and forward rotational driving of the conveying rotary body in front of the stopped position.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the method for controlling conveyed objects in a conveyor according to the present invention, FIG. 2 is a partially cut-away rear view, FIG. 3 is a partially cut-away side view, and FIG. FIG. 4 is an explanatory diagram of its operation. 29--j conveyor, 32...frame, 33a, 33b
...Motor roller as a rotating body for conveyance, 36..Limit switch as a detection means.

Claims (1)

[Claims] (1) In a conveyor in which a plurality of rotary bodies for conveyance are arranged in parallel on a frame, a method for controlling the conveyed articles is to stop the conveyed articles on the conveyor at a predetermined position and to restart the conveyed articles from the stopped position. Then, a conveyance object detection means is provided for the above-mentioned stop position, and the conveyance rotating body in front of the stop position is configured to be rotatable in forward and reverse directions, and when the conveyance object conveyed to the stop position is detected by the above-mentioned detection means. The drive of the rotary conveyance body at the stop position is stopped, and the conveyed object is stopped at the stop position by driving the rotary conveyance body in front of the stop position in reverse rotation, and the conveyed object stopped at the above stop position is moved to the stop position. A method for controlling conveyed objects on a conveyor, characterized in that the conveying object is restarted from a stopped position by forward rotational driving of a conveying rotary body and forward rotational driving of a conveying rotary body in front of the stopped position.