JPS6339494B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a conveying device for a long material such as a pipe or a plate.

[Background of the invention]

An example of a long material conveying device is shown in FIG. FIG. 1 shows a device for transporting long materials from an automatic warehouse and, conversely, for transporting long materials into automatic freight cars. There is a production factory etc. in the upper left of Fig. 1, and the long materials produced here are transferred from horizontal moving devices (walking beams in this example) 1a, 1b to conveyors 2a, 2b, transfer machines 3a, 3b, 3c, etc. Loading and unloading carts 4a, 4b,
The stacker cranes 5a, 5b, and 5c of the automated warehouse are transported via the stacker cranes 4c and 4d, and the product is carried into an automated warehouse (not shown) at the right end of FIG.

The horizontal movement devices (walking beams in this example) 1a and 1b are equipped with a plurality of arms that support a long material at predetermined intervals along the longitudinal direction of the long material, and horizontally move the long material by placing it on the arms ( The elongated material is transferred to the conveyors 2a, 2b by moving from the top to the bottom in FIG. 1) and descending from above the conveyors 2a, 2b.

The conveyors 2a and 2b are as shown in FIG. 2, and pedestals 8 are installed at predetermined intervals on a chain belt 80 arranged horizontally in an endless manner. pedestal 8
The long material 7 is placed on.

Note that the conveyor 2a or 2b is divided into a plurality of parts along the conveyance direction from the viewpoint of conveyance efficiency of long materials. A plurality of conveyors are arranged in series to form one conveyor 2a, 2b.

When supplying long materials from the walking beams 1a, 1b to the stacker cranes 5a, 5c,
Long materials can be fed only by conveyors 2a and 2b.

However, it is desirable to supply the long materials of the walking beam 1a or 1b to the stacker cranes 5a, 5b, and 5c in a scattered manner. For this reason, the transfer machines 3a, 3b, 3c and the loading/unloading carts 4a, 4
b, 4c, and 4d are installed.

As is well known, the transfer machines 3a, 3b, 3c are connected to the ceiling (conveyors 2a, 2b, loading/unloading carts 4a, 4b,
4c and 4d), and an arm that supports a long material is suspended from the bottom surface. The arms project horizontally and are installed at predetermined intervals along the length of the elongated material.
The transfer machines 3a, 3b, 3c travel in the vertical direction in FIG. Can be transferred.

The loading/unloading carts 4a, 4b, 4c, 4d travel on the ground at substantially the same height as the conveyors 2a, 2b, and stop at the intersections with the transfer machines 3a, 3b, 3c. The loading and unloading carts 4a to 4d have pedestals for supporting long materials on their upper surfaces at predetermined intervals. As a result, transfer machine 3
a, 3b, 3c, and stacker cranes 5a, 5
It is possible to transfer long materials between terminals b and 5c.

For example, a case will be described in which a long material of the walking beam 1b is carried into the stacker crane 5c. In this case, if the loading/unloading cart 4d is used, any one of the transfer machines 3a, 3b, and 3c can be used. Now, we will use the transfer machine 3b. When the long material placed on the conveyor 2b is conveyed to the intersection with the travel path of the transfer machine 3b, the conveyor 2b is stopped, and the transfer machine 3b is operated to lift the long material with its arm. . Next, the transfer machine 3b travels toward the intersection with the travel path of the loading/unloading cart 4d and stops. When the loading and unloading cart 4d arrives below the transfer machine 3b, the arm is lowered to transfer the long material to the loading and unloading truck 4d. At this time, transfer machine 3d
The arm fits between the cradle of the loading/unloading cart 4d. When the arm of the transfer machine 3b is retracted, the loading/unloading cart 4d
travels toward the station of Stadka Crane 5c.

The stacker cranes 5a to 5c lift a long material by protruding a fork between the loading and unloading carts or the pedestals of the conveyor, and then move the fork backward. In this state, it travels toward an automated warehouse and easily stores long materials using forks.

Conveyors 2a and 2b are not used to carry out long materials from the automated warehouse to delivery stations 6a and 6b. This is carried out using the loading and unloading carts 4a to 4d and the swings 3a and 3d from the stacker cranes 5a to 5c. The transfer direction is opposite to the loading direction.

Now, the long material conveying apparatus as shown in FIGS. 1 and 2 has the following problems.

(1) In other words, although this device uses a conveyor, it is necessary to provide a pedestal 8 in order for the walking beam, transfer machine, and stacker crane to load or unload the long materials 7 on the conveyor. There is. Therefore, the height of the conveyor as a whole increases due to the increase in the height of the pedestal.

(2) When loading or unloading long materials,
Because the forks of the walking beam, the arm of the transfer machine, and the forks of the stacker crane are inserted between the pedestals, the pitch of the pedestal 8 of the conveyor becomes wider, resulting in overhang of the long material 7 being conveyed. Deflection increases. For this reason, when the long material 7 is transferred from the upstream conveyor to the downstream conveyor, the tip of the long material 7 hangs down.
The leading end often does not rest on the pedestal 8 of the downstream conveyor, making it difficult to transport by the conveyor.

(3) Multiple long materials are arranged in parallel and transported on a conveyor. Due to the problem in (2) above, during transportation,
The ends of the long material become uneven, making it difficult to work in the next process. This is especially a big problem when it comes to automation.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a long material conveying device that causes less disturbance of the materials even when a plurality of long materials are conveyed simultaneously.

[Summary of the invention]

In the present invention, the long materials are handled only in the vertical direction, thereby preventing disturbance of the materials due to horizontal movement of the long materials. In other words, a long material sent by a horizontal movement device such as a walking beam is
The present invention is characterized in that it is engaged with a transfer device that can be transferred in the vertical direction, and the transfer device moves in the vertical direction to place the elongated material on a trolley, thereby moving it in the horizontal direction.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to specific examples. FIG. 3 shows a long material conveying device which is an embodiment of the present invention. This device is not equipped with a conveyor. At the positions of the conventional conveyors 2a and 2b, loading and unloading carts 4e and 4f are provided, respectively, which travel there. The configurations of the loading and unloading carts 4e and 4f are the same as those of the loading and unloading carts 4a to 4d. In addition, the supply truck 1 is on the running path (rail) of the loading and unloading trucks 4e and 4f.
0a and 10b are arranged. This supply cart 10
The configurations of a and 10b are the same as those of the loading/unloading carts 4a to 4f.

The supply carts 10a, 10b travel between the positions of the walking beams 1a, 1b and the transfer machine 3c,
It can be stopped at the intersection with each travel path of the transfer machines 3a, 3b, and 3c. The running range and stopping position of the loading and unloading carts 4e and 4f are the same as those of the loading and unloading carts 4a to 4d. However, the loading/unloading cart 4e cannot travel to the position of the walking beam 1a.

Walking beams 1a, 1b, transfer machine 3a~
3b, carts 4a to 4f, 10a, 10b, and stacker cranes 5a to 5c are the same as conventional ones.

Reference numerals 9a, 9b, and 9c are transfer devices with rotating arms, which are installed along the travel paths of the trolleys 10a and 4e. 9d, 9e, 9f, and 9g are transfer devices, which are installed along the running path of the trolleys 10b and 4f. The transfer devices 9a to 9g are installed on the ground. The transfer devices 9a and 9d are walking beams 1
It is installed facing a and 1b. Transfer device 9
A to 9c and 9e to 9g are installed at the intersections with the travel paths of the transfer machines 3a to 3c.

Next, a specific example of the configuration of the transfer devices 9a to 9g shown in FIG. 3 will be explained using FIGS. 4, 5, and 6. FIG. 4 shows a plan view of the device, FIG. 5 shows a front view of the device, and FIG. 6 shows a side view of the device. In these figures, 11 is an arm that rotates horizontally;
12 is a connecting rod that connects the plurality of arms 11; 13;
is a motor cylinder, and motor cylinder 1
3 and the connecting rod 12, the arm 11 can pivot through 90 degrees. The plurality of arms 11 and the plurality of motor cylinders 13 are connected to a horizontally installed beam 14.
It is rotatably installed. The arms 11 are installed on the beam at predetermined intervals.

The elongated material 7 can be placed with the arm 11 protruding from the beam 14 as shown in FIGS. 4 and 6. This state is said to be that the arm 11 is protruding. When the arm 11 is rotated in the direction B in FIG. 4, the arm 11 is positioned above the beam 14 as shown by the imaginary line. Arm 1
This is called a setback of 1. In this backward state, even if the supply carts 10a, 10b and the loading/unloading carts 4e, 4f are run, they will not hit the carts. Further, in this backward state, even if the beam 14 is raised, it will not hit the carts 10a, 10b, 4e, and 4f.

The beam 14 consists of two vertically installed guide frames 1
5 and 15 via rollers 20 and 20 so as to be able to move up and down. The beam 14 is raised and lowered via a motor 16, a speed reducer 17, a shaft 18, and an upright screw cylinder 19.

The arm 11, which can rotate through 90 degrees, can move in the vertical direction as the transfer beam 14 moves in the vertical direction. The beam 14 is movable in the vertical direction (up and down) along the guide frame 15. That is, the rotational force from the connecting shaft 18 connected to the reducer 17 that decelerates the rotation of the motor 16 rotates the cylinder with screw 19, and due to the vertical movement caused by the rotation of this cylinder, The connected beam 14 can be moved vertically.
As shown in FIG. 6, the beam 14 includes a roller 20.
is attached so that it can be smoothly raised and lowered along the guide frame 15.

As for the means for rotating the arm 11 and moving the beam 14 in the vertical direction, it is not necessary to use a motor as in this example, but it is also possible to use a hydraulic cylinder or the like.

Supply carts 10a, 10b, loading/unloading carts 4e, 4
f is a long material 7 like the other loading and unloading carts 4a to 4c.
Support stands 40 are provided at predetermined intervals to protrude upward. Figure 4 shows the pedestal 40 and arm 1.
The positional relationship with 1 is shown. The arm 11 is located between the pedestals 40.

Now, referring to FIG. 3, the procedure for carrying in a long material will be explained.

The walking beams 1a and 1b at the entrance move toward the transfer devices 9a and 9b, and the plurality of long materials 7 are moved toward the transfer devices 9a and 9b.
A plurality of arms carrying the objects are made to protrude toward the transfer devices 9a and 9d. With the arm 11 projecting below the long material 7 positioned, the walking beams 1a and 1b are lowered, and the long material 7 is moved to the arm 1.
Move to 1. After that, walking beam 1a, 1
b retreats in the direction away from the transfer devices 9a and 9d.

Note that the arm 11 protrudes from the motor cylinder 13.
This is done by rotating the arm 11 by operating the arm 11.

Next, when the supply carts 10a and 10b arrive below the arms 11 of the transfer devices 9a and 9d, the arms 11 are lowered and the long material 7 is transferred to the supply cart 10.
Place it on the pedestal 40 of a and 10b. After that, the arm 11 is rotated and moved backward.

Next, supply carts 10a, 10 on which the long material 7 is placed
b travels toward the intersection with the transfer machines 3a, 3b, and 3c, and each supply trolley 10a, 10b stops at one of the intersections. Supply cart 10a, 1
When 0b stops, the transfer devices 9b, 9 at this stopping point
c, 9e to 9g project the arm 11 and then raise the beam 14 to lift the elongated material 7. Thereafter, the supply carts 10a, 10b are transferred to the transfer devices 9a, 9.
Return to position d.

Next, the transfer devices 9b, 9c, which have the long material 7,
The transfer machines 3a to 3c come to positions 9e to 9g and lift the arms with the arms of the transfer machines 3a to 3c protruding below the long material 7 placed on the arm 11. As a result, the long material 7 is transferred to the transfer machine 3.
Move to a to 3c.

Next, the turns 3a to 3c travel toward the intersection with the travel path of the loading/unloading carts 4a to 4f of the station to be loaded, and then stop.

When the loading and unloading carts 4a to 4f stop below the arms of the transfer machines 3a to 3c, the arms are lowered and the long materials 7 are placed on the loading and unloading carts 4a to 4f. After that, the transfer machines 3a to 3c retreat. This is the same as before.

Next, the loading and unloading carts 4a to 4f travel toward the stations of the stacker cranes 5a to 5c.

When the loading and unloading carts 4a to 4f arrive at the station, the stacker cranes 5a to 5c use forks or the like to take out the long materials 7 and store them in racks in the automated warehouse. This is the same as before.

In addition, when supplying the long materials of the walking beams 1a and 1b to the loading and unloading carts 4e and 4f, respectively, the transfer machines 3a to 3c are not used. in this case,
Supply cart 4 from transfer devices 9b, 9c, 9e to 9g
e, 4f directly. For example, the long material 7 from the walking beam 1a is transferred from the supply cart 10a to the transfer device 9b or 9c, and
When 0a retreats, the transfer device 9 having the long material 7
Loading and unloading trolley 4 below the arm 11 of b or 9c
Run e and stop. Next, the transfer device 9
Lower the arm 11 of b or 9c and remove the long material 7.
When it is placed on the cradle of the loading/unloading cart 4e, the arm 11 is moved backward. Thereafter, the loading/unloading cart 4e travels toward the station of the stacker crane 5a.

When carrying out the elongated material 7 from the automated warehouse to the unloading stations 6a and 6b, the stacker cranes 5a to 5b, loading/unloading carts 4a to 4f, and transfer machines 3a to 3b are used to unload the long material 7. Transfer device 9b, 9c, 9d
There is no need to use ~9g.

In this way, since the configuration is such that a transfer device with a rotating arm is provided instead of using a conveyor as a transfer device, it is possible to convey the long material without disturbing it.

In addition, since a transfer device with a rotating arm is also installed at the walking beam position, compared to the case where the supply truck is directly supplied from the walking beam,
Since long materials can be temporarily stored using a transfer device with a rotating arm, the cycle time for carrying in long materials can be shortened.

〔Effect of the invention〕

As described in detail above, according to the present invention, even when a plurality of long materials are conveyed simultaneously, it is possible to realize transportation without causing disturbance of the materials. Moreover, cycle time can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a conventional long material conveyance system, FIG. 2 is a diagram showing details of a conveyor, FIG. 3 is a diagram showing an example of a long material conveyance system of the present invention, and FIGS. 4 to 6 The figure is a diagram showing a specific example of a transfer device with a rotating arm used in the present invention. 1a-1b...walking beam, 4a-4f
...Input/output trolley, 5a-5f...Statuka crane,
9a to 9g...Transfer device with rotating arm, 10a, 1
0b... Supply truck, 11... Arm, 12... Connecting rod,
13...Motor cylinder, 14...Transfer beam, 1
5...Guide frame, 16...Motor, 17...Reducer, 18...Connection shaft, 19...Cylinder with screw, 10...Roller.

Claims (1)

[Claims] 1. A long material can be supported at a plurality of support points arranged along its longitudinal direction, and in this supported state, the long material can be moved horizontally in the width direction of the long material. and a plurality of arms that can be rotated in the horizontal direction, and a horizontal beam on which the arms are mounted can be moved in the vertical direction. a transfer device that supports a long material; and a cart that travels below the protruding arm and is provided with a cradle on its upper surface that supports the long material at intervals that allow the arm to pivot. A long material conveying device.