JPH0611925Y2 - Stacker crane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a stacker crane, and more specifically to a stacker crane that conveys coiled articles.

[Conventional technology]

Conventionally, when a coil-shaped article is stored in a shelf, the shelf is configured by horizontally providing a plurality of rod-shaped article support members that are inserted and supported in a core that is the inner diameter of the article, and the article is provided between the shelf and the shelf. It is known that a stacker crane that conveys a paper is equipped with an article transfer device that supports an outer peripheral surface that is an outer diameter and that can move back and forth in the shelf direction.

[Problems to be solved by the device]

However, in the stacker crane of the type as described above, the article transfer device supports the outer peripheral surface of the article, and the core is inserted into the rod-shaped article support member. The height had to change position, which required complex control.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention provides the stacker crane with a vertically movable gate-shaped lifting platform, which is vertically movable in a shelf direction and has a core for articles. We propose a stacker crane equipped with an article transfer device that has a bar member that is vertically movable with respect to the article support member of the shelf.

〔Example〕

Hereinafter, an example to which the present invention is applied will be described with reference to the drawings.

FIG. 2 is a partial plan view of an automatic warehouse (2) to which the stacker crane (1) of the present invention is attached. The shelves (3) of the automatic warehouse (2) are for storing coiled articles (W). A large number of rod-shaped article support members (5) that support the article (W) by being inserted into the core (4) are arranged side by side.

The stacker crane (1) is movable along the guide rails (6U) (6L) provided in a pair on the front surface of the shelf (3). That is, the stacker crane (1) has a crane carriage (7) that moves along the lower guide rail (6L), an upper frame (8) that moves along the upper guide rail (6U), and a crane carriage (7).
Mast (9) standing between the upper frame and the upper frame (8)
And a lift table (10) that moves up and down along the mast (9).

The crane truck (7) has a drive wheel (11) rolling on a lower guide rail (6L) and a driven wheel (12), of which the drive wheel (11) is connected to a traveling drive motor (14). That is why it can run freely. In addition, the upper frame (8) is provided with guide rollers (15) which roll the upper guide rail (6U) from both sides to roll the stacker crane (1).

Crane truck (7) and upper frame (8) as described above
A mast (9) is erected between and, and a guide rail (16) is vertically fixed to the mast (9). Further, a plurality of guide rollers (17) that sandwich the guide rail (16) and roll are provided on the lift table (10). A chain (18) is connected to the elevating table (10), and the chain (18) is wound up and down by a lifting drive motor (20) via a sprocket 19 and is rewound to move up and down. .

The lift table (10) has a gate-like shape with an open bottom as shown in FIG. 1, and the article transfer device (21) is also attached to the ceiling surface (23). The article transfer device (21) includes a known slide fork (24), a bracket (25) vertically attached to a movable portion of the slide fork (24), and a direction from the bracket (25) to the shelf (3). It is composed of a bar material (26) that is horizontally projected. The bar (26) is arranged so as to have substantially the same height as the lowermost part of the lifting table (10), and when the lifting table (10) descends to the bottom, the bar (26) is Is capable of moving horizontally on a substantially upper surface of the crane carriage (7).

The bar (26) is composed of two right and left bars, and the distance between the two bars is set to be slightly longer than the diameter of the article support member (5) of the shelf (3). . Of course, it is also possible to adopt the reverse structure in which the article support member (5) is two and the bar (26) of the lifting table (10) is one. That is, the article support member (5) and the bar (26) may be configured so as not to come into contact with each other even when the bar (26) moves up and down.

Next, the operation will be described.

First, a stacker crane (1) is used to load an article (W) from a station (not shown) by a bar (26) of an article transfer device (21).
Transfer to the elevator stand (10). When the transfer of the article (W) is completed, the stacker crane (1) moves to the position of the article support member (5) of the shelf (3) to transfer the article (W). The stacker crane (1) has its crane truck (7) and lifting platform (1
When the traveling and lifting movement by (0) is completed, the lifting platform (10)
The bar material (26) of the article transfer device (21) advances toward the article support member (5). Since the bar material (26) has advanced in advance at the substantially same height position as the article supporting member (5), the article supporting member (5)
Is inserted into the core (4) of the article (W) without any hindrance. Next, the elevator (10) descends and the member supporting the article (W) moves from the bar (26) to the article support member (5). When the support of the article (W) is transferred from the bar (26) to the article support member (5), the article transfer device (21) retreats to the lift table (10) to transfer the article (W). Complete.

The above operation has been described only for the operation of loading the article (W) from the stacker crane (1) to the shelf (3), but the operation of ejecting the article (W) from the shelf (3) is substantially the reverse operation, and therefore the description thereof will be omitted. .

As described above, the stacker crane (1) of the present invention is a lifting platform.
Shelf (3) for supporting article (W) due to lack of bottom of (10)
The lowermost position of the article supporting member (5) can be made lower than in the conventional case, and the storage efficiency of the article (W) is also increased.

[Effect of device]

As is clear from the above description, according to the stacker crane according to the present invention, it is not necessary to change the height position of the lifting table even if the outer diameter of the conveyed article changes, that is, no complicated control is required. do not need.

Further, since the bar member is arranged so as to be substantially at the same height as the lowermost part of the lifting platform, the bar member can be horizontally moved on the substantially upper surface position of the crane carriage. Therefore, the position of the article support member on the lowermost shelf can be made lower than in the conventional case, and the efficiency of accommodating articles on the shelf can be increased.

Further, the lift base is of a gate type with an open bottom, and the lift base is guided by the downward protruding portions on both sides of the gate type, so that the lift motion is stable and there is play during the transfer operation by the bar. I can't get it.

[Brief description of drawings]

FIG. 1 is a side view of a stacker crane according to the present invention, and FIG.
The figure is a partial plan view of an automated warehouse including a stacker crane. (1) …… Stacker crane (3) …… Shelf (4) …… Core (5) …… Article support member (21) …… Article transfer device (26) …… Bar (W) …… Article

Claims (1)

[Scope of utility model registration request] 1. A stacker crane which is provided with a large number of projections in a horizontal direction and conveys articles between shelves made of members for supporting cores of coiled articles, the stacker crane having a bottom open. A gate-shaped lift that can be moved up and down,
The elevating table has a bar member that is movable back and forth in the direction of the shelf and that supports the core of the article and is vertically movable relative to the article supporting member of the shelf and is substantially the same as the lowermost part of the elevating table. A stacker crane that is equipped with an article transfer device placed at the height of.