JPS59212301A - Channel level setting system - Google Patents

Abstract

PURPOSE:To certainly perform putting in and out of articles even when a rack pillar is slanted by providing a detection means of the rack pillar on a platform of a multistage type rack device equipped with a mobile platform and forming said means so as to detect a position of the platform with respect to the rack. CONSTITUTION:Separately from a horizontal scanner 8 provided on a column 5 for detecting a mark 7, a pillar scanner 9 detecting a rack pillar 1 is also provided on a platform 6 and in such a position as said scanner 9 detects the rack pillar 1 when the horizontal scanner 8 detects the mark 7 and the column 5 is stopped and further the platform 6 is in the lower part position as shown by a broken line. When elements 11, 12 of the scanner 9 are synchronously opposed to the rack pillar 1, said pillar 1 is detected, while in case said pillar 1 is detected only by either of the elements 11, 12 the rack pillar 1 is judged to be slanting either to the left or the right, and position amendment is performed for the platform 5. Thus, certain putting in and out of the articles is always performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an article storage system in which a platform is moved along the front of a shelving device having a large number of shelves, and the plant platform is made to correspond to a desired shelf for loading and unloading articles. In particular, the present invention relates to a device for detecting the position of the platform.

Conventional in this type of goods storage system.

As shown in FIG. 1, on the front surface of a shelving device 6, which has a plurality of shelves 2 between a plurality of shelf pillars 1.

A column 5 that moves in the horizontal direction 4 is provided, and a platform 6 equipped with article loading/unloading means is provided on all columns 5 so as to be movable up and down. By detecting a mark 7 provided at the lower front of the shelf device 6 with a horizontal scanner 8 provided at the lower part of the column 5, the platform B is positioned in the horizontal direction 4. That is, the horizontal position of the platform 6 is
It is inferred based on the position of the bottom of .

However, in that case, if the shelf pillar 1 stands diagonally as shown in Fig. 2, there will be a horizontal positional shift 4 between the lower and upper parts of the shelf device B, and the difference between the upper shelf 2 and the platform 5 will occur. Unable to carry out loading and unloading work. Therefore, it is required to assemble the shelf device 6 precisely, which requires a great deal of labor and time.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an article storage system that can reliably perform loading and unloading operations on all shelves even if the shelf pillars are somewhat inclined.

According to the present invention, there is provided a shelving device in which a plurality of shelves are provided between a plurality of shelf pillars, and a column that moves horizontally along the front surface of the shelving device is provided with article loading/unloading means. An article storage system including an article conveying device having a platform movable up and down, in addition to the first position detection means for detecting the relative position of the vertical end of the column with respect to the shelf device; A plant platform position detecting device is obtained, characterized in that the platform is provided with a second position detecting means for detecting all of the shelf pillars, so that the actual position of the platform with respect to the shelf from which it is desired to take in and take out articles can be detected. .

In this way, according to the present invention, since the displacement of the platform with respect to the shelf on which it is desired to take in and take out articles is detected, the position of the platform is corrected according to the value of the displacement, and thereby all the shelves are It is possible to provide an article storage system that reliably takes articles in and out of the shelves, and therefore the shelf device can be easily assembled because it does not require low dimensional accuracy.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 shows an embodiment of the invention. In this embodiment, in addition to the horizontal scanner 8 provided on the column 5 to detect the mark 7 provided at the lower front of the shelving device 6, a column scanner 9 is also provided in the plant home 6 to detect the shelf pillar 1. has been established. This pillar scanner? The mounting position is such that when the horizontal scanner 8 detects the mark 7 and the column 5 is stopped, the platform 6 is in the lower position as shown by the dashed line.

A pillar scanner 9 is selected to detect the shelf pillar 1.

The pillar scanner 9 has two detection elements 11 and 12 spaced apart from each other in the horizontal direction 4, and is shown in FIG.
, ), both detection elements 11 and 12 are connected to the shelf pillar 1 at the same time.
It is assumed that the shelf post 1 is detected when facing the . Further, when only one of the detection elements (1) faces the shelf pillar 1 as shown in FIG. 4(b).

) Assume that platform 6 is shifted to the left.

Further, when only the other detection element 12 faces the shelf pillar 1 as shown in FIG. 4(c), it is assumed that the platform 6 is shifted to the right.

Note that the mutual spacing between both detection elements 11 and 12 is desirably selected to be slightly narrower than the width of the shelf post 1.

Next, operation control based on the states of the horizontal scanner 8 and column scanner 9 will be explained using the flowchart shown in FIG. First, the column 5 is moved in the horizontal direction while detecting the mark 7 with the scanner 8, and in step A, the entire column 5 is stopped at a desired position. Next, in step B, check the states of both detection elements 11 and 12, and
If only the left detection element 12 is on, the column 5 is moved to the right in step C, and if only the left detection element 12 is on, the column 5 is moved to the left in step C'. When both detection elements 11, 12 are turned on, the column 5 is stopped in step D. As a result, the platform 6 stops correspondingly to ensure that articles can be loaded onto and removed from the desired shelves. Note that the control described using the flowchart of FIG. 5 may be performed using a microcomputer, or may be performed using other electric circuits or electronic circuits.

As mentioned above, since the positional deviation of the platform 5 with respect to the shelf 2 is corrected, the assembly accuracy of the shelf device 3 is allowed to have an error up to the width of the shelf pillar 1, and therefore the workability is improved. Much improved.

[Brief Description of the Drawings] Fig. 1 is a schematic configuration diagram showing an example of a conventional article storage system, Fig. 2 is a diagram similar to Fig. 1 showing the conventional problem, and Fig. 6 is an example of the present invention. FIG. 4 is a schematic diagram showing the structure of the article storage system according to the embodiment, FIG. 4 is a diagram showing the state of misalignment of the plant platform, and FIG. 5 is a flowchart showing the control. 1... Shelf pillar, 2... Shelf, 6... Shelf device, 5... Column. 6...Plant home, 7...Mark, 8...Horizontal scanner, 9...Pillar scanner.

Claims (1)

[Claims] 1. A shelving device consisting of a plurality of shelves provided between a plurality of shelf pillars, and a column that moves horizontally along the front of the shelving device, and a plant platform equipped with a means to take in and take out articles can be moved up and down. In addition to a first position detecting means for detecting the relative position of the vertical end of the column with respect to the shelf device, the article storage system includes an article conveying device that may be provided on the platform. 1. A plant platform position detecting device, characterized in that a position detecting means for detecting a pillar is provided to detect the actual position of the platform with respect to a shelf from which an article is desired to be taken in or taken out.