JPH06155338A - Automatic pallet rotation stop device - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide an automatic pallet rotation stopping device capable of easily and surely rotating and stopping a pallet and efficiently carrying out work of loading articles on the pallet. [Structure] A rotating body 3 rotatably provided on a base 2, and a pallet can be placed on the upper surface thereof, and the rotating body 3
The automatic pallet rotation stopping device 1 is provided with a driving means 4 for rotating the pallet and a control means 5 for controlling the rotation stop position of the rotating body 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic pallet rotation stopping device capable of rotating a pallet in a convenient state when loading articles on the pallet.

[0002]

2. Description of the Related Art In general, when loading articles conveyed by a conveyor or the like onto a pallet, a loader can easily load the articles while rotating the pallet in a convenient state without moving much.

Therefore, conventionally, in order to rotate the pallet in a convenient state, there has been proposed a turntable on which the pallet can be placed. That is, this turntable
A rotator is provided on a base through a ball bearing, and when in use, the pallet placed on the rotator is pushed by a hand or foot to rotate the pallet ( For example, Japanese Patent Publication 1-3072
No. 8, JP-A-1-279114, and JP-A No. 2-279114.
No. 256477).

[0004]

However, since the above-described conventional rotary table rotates the pallet simply by pushing the pallet with hands or feet, the pallet is stopped at a desired position. It causes inconvenience that it is not possible. In addition, there is an inconvenience that the pallet is carelessly rotated when the articles are loaded. further,
Since the rolling resistance of the rotating table is different between when the articles are loaded and when the articles are not loaded, the pallets tend to rotate carelessly in the empty state, and it becomes difficult to rotate the pallets when the articles are loaded. Cause

When using such a turntable,
When the pallets are loaded, the loading work is temporarily stopped,
It is necessary to replace the pallet with a forklift or the like to replace it with an empty pallet, which causes a problem that the work cannot be efficiently performed.

Further, when the pallet is larger than a standard pallet, the pallet cannot be placed in a stable state on the rotary table, which causes a problem that the work becomes difficult.

The present invention has been made in view of the above circumstances, and provides an automatic pallet rotation stopping device capable of rotating and stopping a pallet easily and surely and efficiently carrying out a work of loading articles on the pallet. Is intended.

[0008]

An automatic pallet rotation stopping device of the present invention for solving the above-mentioned problems is a rotator which is rotatably provided on a base and on which a pallet can be placed. A drive means for rotating the rotating body and a control means for controlling the rotation stop position of the rotating body are provided.

Further, two second rotating bodies which are rotatably provided on the rotating body and on which the pallet can be placed, and the rotating body at a predetermined position among the second rotating bodies are rotated. A second driving means for driving, a driving coupling means for coupling and releasing the driving of the second rotary body and the second driving means at this predetermined position, and a first control means for controlling the rotation stop position of the second rotary body. Two control means are provided.

[0010]

According to the present invention, the pallet placed on the rotating body can be stopped at a predetermined rotation stop position by the control means while being rotated by the drive means.

According to the second aspect of the present invention, while the drive connection between the second drive means and the second rotating body is released by the drive connecting means, the rotating means is rotated by the drive means while controlling means. Is stopped at a predetermined rotation stop position by means of
The individual pallets can be exchanged at predetermined working positions alternately. Further, in the working position, with the drive connection between the second drive means and the rotating body by the drive connection means,
The pallet placed on the second rotating body can be stopped at a predetermined rotation stop position by the second control means while being rotated by the second drive means.

Further, the large pallet placed on the rotating body so as to straddle over the two second rotating bodies can be stopped at a predetermined rotation stop position by the control means while being rotated by the drive means. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

[0014]

[Embodiment 1] FIG. 1 and FIG. 2 schematically show the overall structure of an automatic pallet rotation stopping device 1.

That is, the automatic pallet rotation stopping device 1 includes a base 2, a rotating body 3, a driving device 4 and a control device 5.
It is equipped with.

The base 2 is formed by a base main body 21 assembled on the fixed base plate 20 in a rectangular stable shape with grooved steel and the like, and an annular frame 22 fixed on the base main body 21. There is. The base 2 is the base 2
The shape of the rotator 3 is not particularly limited as long as it can support the rotator 3 and the pallet p and the article A placed on the rotator 3.

The rotating body 3 is formed in an annular shape, and is rotatably provided on the annular frame 22 of the base 2 via a ball bearing (not shown) or the like. Also,
The upper surface of the rotating body 3 is formed smooth so that the pallet p can be placed thereon. Further, a chain 31 is wound around and fixed to the outer peripheral surface of the rotating body 3 over the entire circumference, and the chain 31 is engaged with the sprocket 41 of the drive unit 4.

The drive device 4 rotates the sprocket 41 by the drive motor 42 provided on the fixed base plate 20 to rotate the rotating body 3 via the chain 31 meshed with the sprocket 41. The drive unit 4 can be started by a foot switch (not shown) or the like.

In this embodiment, the rotating body 3 is rotated by engaging the chain 31 and the sprocket 41, but the rotating body 3 is not limited to such a structure. A gear (not shown) may be provided around the outer peripheral surface of the body 3 so as to be meshed therewith, or a timing belt (not shown) may be wound around the outer peripheral surface of the body 3 so as to be meshed therewith. Both the outer peripheral surface and the outer peripheral surface of the sprocket 41 may be made of an elastic body such as rubber and may be rotated by the drive transmission between the rubber wheels.

The control device 5 is provided with 90 ° on the periphery of the rotating body 3.
And the fixed substrate 20.
And a photoelectric tube 52 which is provided in the above and emits an optical signal in the upward direction. And photocell 5
When the reflector 51 receives a signal from the drive device 2, the drive device 4 is started by a foot switch (not shown) or the like.
Is automatically stopped, so that the rotation of the rotating body 3 is stopped.

When the automatic pallet rotation stopping device 1 thus constructed is used, the pallet p may be simply placed on the rotating body 3 and the articles A may be loaded on the pallet p. And if you want to rotate this pallet p,
A foot switch (not shown) or the like linked to the drive device 4 may be pressed. Then, the drive device 4 is driven to rotate the pallet p together with the rotating body 3, and when the pallet p is rotated by 90 °, the control device 5 stops the rotation of the pallet p.

In this embodiment, since the reflection plate 51 is provided in the phase of 90 °, the rotating body 3 is stopped every 90 ° rotation, but the installation position of the reflection plate 51 is changed. As a result, the rotating body 3 can be stopped at 45 °, 180 °, and other various rotation angles according to the shapes of the article A and the pallet p.

Further, in this embodiment, the control device 5 is constituted by the combination of the reflection plate 51 and the photoelectric tube 52.
The control device 5 may be configured by a limit switch (not shown) or a relay switch (not shown). Further, when the rotation speed of the drive motor 42 is constant, the drive device 4 is started by a timer (not shown) each time the drive device 4 is started.
The drive time may be set to stop the drive device 4. Further, the rotation speed of the drive motor 42 may be measured, and the drive device 4 may be stopped every predetermined rotation speed of the drive motor 42.

Further, the rotation speed of the pallet p can be easily changed within a range of 1 to 5 rotations per minute by adjusting the output.

[0025]

Second Embodiment This example is shown in FIGS.

That is, the automatic pallet rotation stopping device 1 of the present embodiment is one in which the second rotating body 6 is provided on the rotating body 3 of the first embodiment, and the second rotating body 6 is rotated. A second drive device 7, a drive connection device 8 for connecting and disconnecting the drive of the second rotary body 6 and the second drive device 7, and a second control device 9 for controlling the rotation stop position of the second rotary body 6. It is equipped with. Note that, here, only the differences from the first embodiment will be described, and the other description will be omitted. The same members as those in the first embodiment are designated by the same reference numerals.

A rectangular support frame 3 is provided on the upper surface of the rotating body 3.
0 is provided. Wheels 33 are provided on the bottom of the support frame 30, and the entire support frame 30 is supported by the wheels 33 when the rotating body 3 rotates. Further, two annular frames 32 are provided on both ends of the support frame 30.

The second rotating body 6 is provided on the two annular frames 32 via a ball bearing (not shown) or the like, and is rotatable with respect to the rotating body 3. The upper surface of the second rotating body 6 is formed smooth so that the pallet p can be placed on it. Further, as shown in FIG. 5, the arrangement intervals of the second rotary bodies 6 are set so that, when the pallets p are placed on the second rotary body 6, the pallets p do not buffer each other even if they rotate. The distance is set. However, as shown in FIG. 6, the arrangement intervals of the second rotary bodies 6 are such that even when the large pallet P is placed so as to straddle the second rotary bodies 6, the second rotary bodies 6 can be placed in a stable state. There must be. A chain 61 is wound around and fixed to the outer peripheral surface of each of the second rotating bodies 6 over the entire circumference, and the chain 61 is attached to the sprocket 7 of the second drive device 7.
It is designed to mesh with 1.

The second drive device 7 is adapted to rotate the sprocket 71 by the drive motor 72 to rotate the second rotary body 6 via the chain 61 meshing with the sprocket 71. Further, the second drive device 7 can be started by a foot switch (not shown) or the like. The second driving device 7 is drivingly connected to the second rotating body 6 located at the work position W via the driving connecting device 8.

The second drive device 7 and the second rotary member 6
The drive connection with and is not limited to the one in which the chain 31 and the sprocket 41 are engaged with each other, and like the rotating body 3 and the drive device 4 of the first embodiment, the drive connection is rotated by various drive transmissions. Good.

The drive coupling device 8 is composed of a moving substrate 81 for fixing the second driving device 7 and a cylinder device 82 adapted to move the moving substrate 81 in parallel. Then, the second drive device 7 is moved in parallel by the operation of the drive connection device 8, and the sprocket 71 of the second drive device 7 and the chain 61 of the second rotary body 6 located at the working position W are meshed with each other. Release the mesh. That is, when the second rotating body 6 is located at the work position W due to the rotation of the rotating body 3, the drive connecting device 8 operates to connect or disconnect the drive between the second rotating body 6 and the second drive device 7. It is designed to do. Therefore, this drive coupling device 8
The connection and the disconnection of the drive by are interlocked with the control device 5 and the second control device 7 that control the rotation of the rotating body 3 and the second rotating body 6.

Further, in this embodiment, the drive device 4 for rotating the rotating body 3 is also fixed to the drive coupling device 8 having the same structure. The rotation of the rotating body 3 can be switched between automatic and manual by connecting and disconnecting the drive by the drive connecting device 8.

The second control device 9 is provided on the fixed substrate 20 and four reflecting plates 91 provided at the periphery of the second rotating body 6 in a phase of 90 ° so as to emit an optical signal in the upward direction. The phototube 92 is made up of Then, when the reflector 91 receives the signal from the photoelectric tube 92, the second drive device 7 started by a foot switch (not shown) or the like is automatically stopped, so that the second rotating body 6 is released.
It is designed to stop the rotation of.

Further, in this embodiment, the control device 5 for controlling the rotation of the rotating body 3 has a size of 45 because the rotating body 3 is large.
The rotation is stopped every °. That is,
Eight reflectors 51 are provided on the periphery of the rotating body 3 at a phase of 45 °.

Next, the operation of the automatic pallet rotation stopping device 1 will be described.

First, when working using the normal pallets p, the pallets p are placed on the respective second rotating bodies 6 and the articles A are loaded on the pallets p at the work position W. When it is desired to rotate the pallet p, a foot switch (illustrated in the figure) interlocked with the second drive device 7 in a state where the drive connection device 8 drives and connects the second drive device 7 and the second rotary body 6 to each other. You can press (omitted). Then, the second drive device 7 is driven to rotate the pallet p together with the second rotating body 6 at the work position W, and when the pallet p is rotated 90 °, the rotation of the pallet p is stopped by the second control device 9. Thereafter, the pallet p may be repeatedly rotated by the same operation to load the articles A on the pallet p.

When the articles A are fully loaded on the pallet p at the working position W, the drive connection device 8 releases the drive connection between the second drive device 7 and the second rotary body 6, and the drive device 4 is interlocked. The foot switch (not shown) or the like may be pressed. Then, the drive device 4 is driven to rotate the rotating body 3 every 45 °. Then, by rotating the rotating body 3, the fully loaded pallet p at the work position W can be obtained.
Can be replaced with an empty pallet p. After the replacement, the articles A can be loaded on the empty pallet p by the above operation.

By setting the phase of the reflecting plate 51 to 180 °, it is possible to rotate 180 ° all at once to replace the fully loaded pallet p at the working position W with an empty pallet p.

As another method of using the automatic pallet rotation stopping device 1, a large pallet P is placed on the rotating body 3 so as to straddle over the two second rotating bodies 6, and the pallet P is Article A can be stacked on top of it. In this case, in order to rotate the large pallet P, when the drive connecting device 8 drives the drive device 4 and the rotating body 3, the foot switch (not shown) linked to the drive device 4 is pushed. Good. Then, as shown in FIG. 6, the driving device 4 is driven to rotate the large pallet P together with the rotating body 3, and when the large pallet P is rotated by 45 °, the control device 5 stops the rotation of the large pallet P. Thereafter, when it is desired to rotate the large pallet P similarly, the same operation may be repeated. However, when used in this way, the drive connection between the second drive device 7 and the second rotary body 6 must be released by the drive connection device 8.

In this embodiment, the rotating body 3 is stopped every 45 ° rotation, and the second rotating body 6 is stopped every 90 ° rotation. As in the first embodiment, it can be modified appropriately.

Further, the rotation speeds of the rotating body 3 and the second rotating body 6 can be easily changed within a range of 1 to 5 rotations per minute by adjusting the output.

[0042]

As described above, according to the present invention, the pallet placed on the rotating body can be stopped at the predetermined rotation stop position by the control means while being rotated by the drive means. Further, it is possible to load articles on the pallet while surely rotating and stopping the pallet, and it is possible to perform efficient work.

Further, 2 mounted on the second rotating body of the rotating body
Since individual pallets can be alternately switched to predetermined work positions, it is possible to perform pallet replacement work of non-work positions while carrying out loading work at work positions, and efficient work can be performed. . Further, since the large pallet placed on the rotating body so as to straddle over the two second rotating bodies can be stopped at the predetermined rotation stop position by the control means while being rotated by the drive means,
Even if a large nonstandard pallet is used, articles can be loaded on the pallet while rotating and stopping the pallet easily and reliably, and efficient work can be performed.

[Brief description of drawings]

FIG. 1 is a plan view showing the outline of the overall configuration of an automatic pallet rotation stop device.

FIG. 2 is a side view showing the outline of the overall configuration of an automatic pallet rotation stop device.

FIG. 3 is a plan view showing the outline of the overall configuration of an automatic pallet rotation stopping device according to a second embodiment.

FIG. 4 is a side view showing the outline of the overall configuration of an automatic pallet rotation stopping device according to a second embodiment.

FIG. 5 is a schematic diagram illustrating a positional relationship of a second rotating body of the automatic pallet rotation stopping device according to the second embodiment.

FIG. 6 is a schematic view illustrating another method of using the automatic pallet rotation stopping device according to the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic pallet rotation stopping device 2 Base 3 Rotating body 4 Driving device (driving means) 5 Control device (control means) 6 Second rotating body 7 Second driving device (second driving means) 8 Driving coupling device (driving coupling means) ) 9 second control device (second control means) A article p pallet P large pallet (pallet) W working position (predetermined position)

Claims (2)

[Claims] 1. A rotating body which is rotatably provided on a base and on which an pallet can be placed, a driving means for rotating the rotating body, and a control for controlling a rotation stop position of the rotating body. An automatic pallet rotation stopping device comprising: 2. A rotator is rotatably provided at a predetermined interval on a rotator, and a pallet can be placed on the upper surface of the rotator.
A plurality of second rotating bodies, a second driving means for rotating the rotating body at a predetermined position of the second rotating body, and a connection between the driving of the second rotating body and the second driving means at the predetermined position. 2. The automatic pallet rotation stop device according to claim 1, further comprising drive connection means adapted to be released and second control means for controlling a rotation stop position of the second rotating body.