JP3978270B2 - Work loading / unloading equipment in a three-dimensional warehouse - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a work loading / unloading apparatus in a three-dimensional warehouse.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a crane provided in a three-dimensional warehouse, a fork is provided on a lifter beam provided in a crane in order to store a work on a shelf provided in a work storage shelf or take out a work stored on the shelf. The fork is formed with a plurality of claw portions for supporting a workpiece.
[0003]
That is, as shown in FIG. 4, the work storage shelf 101 is provided with a plurality of stages of shelves 105 on the upright column 103, and the work W is stored in the shelf 105. On the other hand, a fork 107 is provided on a lifter beam (not shown) provided in the crane so as to be movable up and down, left and right, and support claws 109 for supporting the workpiece W are fixedly provided on the fork 107 at a plurality of positions.
[0004]
[Problems to be solved by the invention]
By the way, in the workpiece loading / unloading means in the conventional three-dimensional warehouse described above, when the workpiece W on the fork 107 is in the arrow B direction from the tip of the fork 107 when the workpiece W is stored in the shelf 105, A large space is required for storage. That is, as shown in FIG. 4, a margin L ₁ is necessary so that the tip of the fork 107 and the workpiece W on the shelf 105 do not interfere with each other, and from the tip of the fork 107 to the center of the workpiece W placed. It is the distance L _2. The sum of the distance L ₂ and the margin L ₁ is a space L ₃ necessary for storage.
[0005]
On the other hand, when there is a storage space L _{4 for} the shelf 105, the work W cannot be stored unless the storage space L ₄ is larger than the space L ₃ required for the storage.
[0006]
For this reason, there is a problem that it becomes impossible even though storage is empty storage space L ₄ in the shelf 105 side. If the work W on the fork 107 is in the A direction as much as possible, the space L ₃ required for storage on the fork 107 can be reduced.
[0007]
An object of the present invention is to provide a work loading / unloading device in a three-dimensional warehouse in which the space for raising and lowering a fork and the efficiency of a space for placing a work shelf can be improved.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a work loading / unloading device in a three-dimensional warehouse according to the present invention stores a work in a work storage shelf having a plurality of vertical, left, and right steps on a support column installed in the three-dimensional warehouse or receives a work from a work storage shelf. In the workpiece loading / unloading device to be taken out, a fork movable in the left-right direction is provided on a lifter beam movable up and down provided adjacent to the workpiece storage shelf, and a fixed support claw for supporting the workpiece is provided at the tip of the fork. , close to the fixed support claws, Ri and away freely move supporting pawls name provided in the fork is for said plurality providing that as selectable in accordance with the moving supporting pawls on the diameter of the workpiece.
[0009]
Therefore, the position of the moving support claw provided on the fork can be set according to the diameter of the workpiece to be supported, and the tip position of the fork can be aligned with the side surface position of the work, so the pitch between shelves can be narrowed. And can effectively use the factory space. Moreover, the space required for storage on the fork can be reduced, and the storage space on the shelf can be used effectively.
[0011]
In addition, multiple movable support claws can be set at the optimal position according to the workpiece diameter, the side of the workpiece does not come out from the fork tip, the pitch between shelves can be narrowed, and the factory space can be used effectively. Effective storage space on the shelf.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the three-dimensional warehouse and the work loading / unloading device have already known configurations, and thus detailed illustration and description thereof will be omitted.
[0013]
First, the overall arrangement will be schematically described. Referring to FIG. 2, a three-dimensional warehouse 1 includes a plurality of work storage shelves 3 and a work loading / unloading work that is movable in the left-right direction (left-right direction in FIG. 2) across the work storage third. The device is composed of a crane (not shown).
[0014]
The work storage shelves 3 are provided with a plurality of vertical shelves 7 arranged on both sides of a column 5 erected on the floor, and a plurality of works W are provided on the shelves 7 as, for example, round bars, steel shapes, etc. Is stored.
[0015]
A lifter beam 11 having a fork 9 is provided on the crane so as to be movable up and down by a lifting motor (not shown). The fork 9 provided on the lifter beam 11 is omitted from the motor (not shown). However, the fork 9 is moved in the left-right direction by a pinion, a rack or the like. For this reason, the work W supported on the fork 9 can be transferred onto the shelf 7 and the work W supported on the shelf 7 can be transferred onto the fork 9.
[0016]
Next, the fork 9 which is a main part of the present invention will be described in more detail.
[0017]
Referring to FIG. 1, fixed support claws 15 are provided upright at both ends of a fork main body 13 constituting the fork 9. The fork main body 13 is formed with, for example, rectangular holes 17 at a plurality of locations. The hole 17 is provided with movement support claws 19A and 19B so as to be movable.
[0018]
As a drive system for moving the movable support claws 19A, 19B, drive side sprockets 21A, 21B are rotatably provided in the holes 17, and output shafts 25A, 23A, 23B of the drive motors 23A, 23B are provided on the drive side sprockets 21A, 21B. 25B is installed. Encoders 27A and 27B are connected to the tips of the output shafts 25A and 25B.
[0019]
Driven side sprockets 29A and 29B opposite to the drive side sprockets 21A and 21B are rotatably provided in the hole 17. Chains 31A and 31B are looped around the driven sprockets 29A and 29B and the drive side sprockets 21A and 21B, and both ends of the chains 31A and 31B are connected to the side surfaces of the movement support claws 19A and 19B. Reference numeral 33 denotes a relief hole for the movement support claw 19A to enter.
[0020]
With the above configuration, when the drive motors 23A and 23B are driven, the drive-side sprockets 21A and 21B rotate, and the chains 31A and 31B travel so that the movement support claws 19A and 19B are guided by the holes 17 and move in the left-right direction. Will be. The positions of the movement support claws 19A and 19B are set by the encoders 27A and 27B.
[0021]
With the configuration as described above, as shown in FIG. 3, the movement support claw 19 </ b> A is brought closer to the fixed support claw 15 side in order to support the small-sized work W, as shown in FIG. 3. Then, as the diameter of the workpiece W gradually increases, the moving support claw 19A is moved backward (moved to the right in FIG. 3) to support the workpiece W. When the diameter of the workpiece W reaches a predetermined diameter, i.e. when a workpiece W _x is supporting the workpiece W _x in the moving support claws 19A and 19B.
[0022]
Therefore, since the end surface of the workpiece W does not protrude from the tip of the fork 9 as shown in FIG. 3, the fork 9 and the shelf 7 shown in FIG. You can make it smaller.
[0023]
Thus, the pinch between shelves can be narrowed, and the factory space can be used effectively. Further, the space required for storage on the fork 9 can be reduced, and the storage space on the shelf 7 can be used effectively.
[0024]
The present invention is not limited to the embodiment of the invention described above, and can be implemented in other modes by making appropriate modifications. For example, what is placed on the fork 9 can be a stock box or the like, and the drive system of the movement support claws 19A and 19B may employ a cylinder other than the drive motors 23A and 23B. Further, the timing for moving the movement support claws 19A, 19B can be performed at any time as long as the rigidity of the fork 9 and the movement support claws 19A, 19B allows.
[0025]
【The invention's effect】
As will be understood from the description of the embodiments of the above such invention, according to this invention, it can be set according to the diameter of the workpiece for supporting the position of the movable support claw provided on the fork, the fork Since the tip position can be aligned with the side position of the workpiece, the pitch between shelves can be reduced and the factory space can be used effectively. Moreover, the space required for storage on the fork can be reduced, and the storage space on the shelf can be used effectively.
[0026]
In addition , multiple movable support claws can be set at the optimum position according to the diameter of the workpiece, the side surface of the workpiece does not come out from the tip of the fork, the pitch between shelves can be narrowed, and the factory space can be used effectively. The shelf space can be used effectively.
[Brief description of the drawings]
FIG. 1 is a perspective view of a fork showing a main part of the present invention.
FIG. 2 is a layout explanatory diagram showing an overall layout of a three-dimensional warehouse and work loading / unloading devices.
FIG. 3 is an operation explanatory diagram of the present invention.
FIG. 4 is an operation explanatory diagram illustrating a positional relationship between a shelf and a hawk, showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Three-dimensional warehouse 3 Work storage shelf 9 Fork 11 Lifter beam 15 Fixed support claw 19A, 19B Movement support claw

Claims (1)

In a workpiece loading / unloading device for storing workpieces in or removing workpieces from workpiece storage shelves provided in a plurality of stages vertically and horizontally on a standing column in a three-dimensional warehouse, upper and lower provided adjacent to the workpiece storage shelves A fork that is movable in the left-right direction is provided on the movable lifter beam, and a fixed support claw for supporting the workpiece is provided at the tip of the fork, and a movable support claw that is movable toward and away from the fixed support claw is provided on the fork. Do Ri, before Symbol mobile supporting pawls work loading in steric warehouse characterized by comprising a plurality so as to be selected according to the diameter of the workpiece, and unloading device.

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