JPH04298492A - How to take inventory of thin steel strips - Google Patents

Abstract

PURPOSE:To manage a large number of coiled thin steel strips in stock correctly and simply in an inventory-taking for the thin steel strips. CONSTITUTION:An ID plate 5 is fitted to the lower part of a thin steel plate coil 3 through a fitting jig, and stock information on the stock number, size, weight and history record of the coil 3 is memorized in the ID plate 5. An antenna device 6 is installed in the vicinity under an overhead crane 1. In the case of moving the thin steel plate coil 3 by means of a coil hanging jig 2 through the overhead crane 1, when the overhead crane 1 draws near to the coil 3, the stock information is sent to the antenna device 6 from the ID plate by means of a microwave.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inventorying thin steel strips, and its purpose is to easily and accurately manage a large number of coiled thin steel strips.

0002

[Prior Art] Conventionally, as a method for taking stock of thin steel strips, each coiled thin steel strip is painted with an identification symbol, and information on the coil size, weight, history, etc. is obtained from the coil number. It is common to compare the

0003

[Problems to be Solved by the Invention] In the conventional inventory-taking method, actual items are checked manually, which results in poor workability, takes a lot of time, and tends to cause checking errors.

0004

[Means for Solving the Problems] The gist of the present invention is to install an ID plate through a mounting jig at the bottom of each coil when moving a thin steel strip coil with a coil hoist via an overhead crane. The ID plate stores information on the actual coil, and an antenna device is installed near the bottom of the overhead crane. When the overhead crane approaches the coil, the ID plate transmits the information on the actual item to the antenna device using microwaves. This is a method for taking stock of thin steel strips.

[0005]

[Operations and Examples] The present invention will be explained below based on the drawings. FIG. 1 is a diagram showing an example of an apparatus for implementing the present invention. When moving the thin steel strip coils 3 using the coil hanging device 2 via the overhead crane 1, an ID plate 5 is attached to the bottom of each coil 3, and the ID plate 5 is placed on the coil hanging device 2 near the bottom of the overhead crane 1. The microwave from the ID plate 5 is detected by the antenna device 6. The ID plate 5 is attracting attention as a data carrier for production control along with barcodes and automatic marking, and is already commercially available from several manufacturers. The ID plate 5 stores information on the coil 3 such as the item number, size, weight, manufacturing history, etc., and this information can be read from the antenna device 6 via microwaves. The read information is sent from the crane operator's cab terminal 7 to the ground station 9 via the guidance radio 8, and is taken into the host CPU 10. Further, the yard address information is sent to the ground station 9 by being inputted by the crane operator from the crane-mounted terminal, or by automatically reading the yard address in the yard by the crane's traverse and traveling position detector. Inventory is taken by comparing the address information and the actual item information read by the actual item management CPU with the inventory information 11 stored in the actual item management CPU. In this way, since the actual coil can be recognized directly from the crane, the inventory information 11 can be accurately grasped, and stocktaking, which was previously done by hand, can be done at all times.

FIG. 2 is a detailed diagram showing the positional relationship between the antenna device 6 installed on the coil hanger 2 and the ID plate 5. As shown in FIG. The communicable distance between the ID plate 5 and the antenna device 6 is approximately 3 m, and the ID plate information can be read simply by the hanging tool 2 traveling above the coil 3.

FIG. 3 is a detailed view of the ID plate 5. I
The D plate 5 is one of the commercially available ID plates, has a storage capacity of 20 decimal digits, and weighs 90 g. A coil attachment jig 4 (magnet) is attached to this ID plate 5, and the coil is attached to the actual product by magnetic force.

FIG. 4 is a diagram showing the read operation characteristics of the ID plate 5. When the information on the ID plate 5 is read by the antenna device 6, the off-line readable range is a conical area having a height L and a radius R of the shaded area. However, when a metal shield exists between the antenna device 6 and the ID plate 5, the microwaves are reflected and reading is impossible. Therefore, ID plate 5
By specifying the mounting position at the lower end of the same side of the coil in the storage area, it is possible to identify adjacent ID plates.

[0009]

[Effects of the Invention] According to the present invention, item verification can be automatically and easily performed, and inventory can be taken at any time.

[Brief explanation of drawings]

FIG. 1 is an overall view showing an example of an apparatus for implementing the present invention.

FIG. 2 is a detailed diagram showing the positional relationship between the antenna device installed on the coil hanger and the ID plate.

FIG. 3 is a detailed view of the coil-mounted ID plate.

FIG. 4 is a diagram showing read operation characteristics of a D plate.

[Explanation of symbols]

1 Overhead crane 2 Coil hanging tool 3 Coil 4 Mounting jig 5 ID plate 6 Antenna device 7 Driver's cabin terminal 8 Guided radio 9 Ground station 10 CPU 11 Inventory information 12 Inventory list

Claims (1)

[Claims] [Claim 1] When moving thin steel strip coils using a coil hoist via an overhead crane, an ID plate is installed at the bottom of each coil via a mounting jig, and information on the actual coil is displayed on the ID plate. The antenna device is installed near the bottom of the overhead crane, and when the overhead crane approaches the coil, the above-mentioned item information is transmitted from the ID plate to the antenna device using microwaves. Inventory method.