JPS63157080U

JPS63157080U -

Info

Publication number: JPS63157080U
Application number: JP4920387U
Authority: JP
Priority date: 1987-03-31
Filing date: 1987-03-31
Publication date: 1988-10-14

Description

[Brief explanation of drawings]

第１，２図は本考案の第１実施例としての板材
吊り上げ用電磁石装置を示すもので、第１図はそ
の制御ブロツク図、第２図はその制御要領を説明
するためのフローチヤートであり、第３，４図は
本考案の第２実施例としての板材吊り上げ用電磁
石装置を示すもので、第３図はその制御ブロツク
図、第４図はその制御要領を説明するためのフロ
ーチヤートであり、第５〜７図は従来の板材吊り
上げ用電磁石装置を示すもので、第５図はそのリ
フテイングマグネツトの配置例を示す模式図、第
６図はその制御系を示す電気回路図、第７図はそ
の制御要領を説明するためのフローチヤートであ
る。図において、１……吊りビーム、２……リフテ
イングマグネツト（電磁石）、３……ＳＣＲ、４
……吊り上げ荷重センサ、５……制御手段を構成
するコントローラ、６……点弧装置、７……鋼板
、８……励磁漸減用制御手段、９……再励磁時用
制御手段。なお、図中、同一符号は同一、又は相
当部分を示す。 Figures 1 and 2 show an electromagnet device for lifting plate materials as a first embodiment of the present invention, Figure 1 is a control block diagram thereof, and Figure 2 is a flowchart for explaining the control procedure. , 3 and 4 show an electromagnet device for lifting plate materials as a second embodiment of the present invention, FIG. 3 is a control block diagram thereof, and FIG. 4 is a flowchart for explaining the control procedure. Figures 5 to 7 show a conventional electromagnet device for lifting plate materials, Figure 5 is a schematic diagram showing an example of the arrangement of the lifting magnet, and Figure 6 is an electric circuit diagram showing its control system. FIG. 7 is a flowchart for explaining the control procedure. In the figure, 1...hanging beam, 2...lifting magnet (electromagnet), 3...SCR, 4
... Lifting load sensor, 5 ... Controller constituting control means, 6 ... Ignition device, 7 ... Steel plate, 8 ... Control means for gradually reducing excitation, 9 ... Control means for re-excitation. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of Claim for Utility Model Registration] (1) A magnetic device that is equipped with a plurality of electromagnets arranged along a suspension beam and a control means for controlling the excitation state of each of the electromagnets, and is suspended by the electromagnets. Lifting number detection means for detecting the number of boards to be manufactured is provided, and when the control means detects that the hanging number detection means has lifted a required number or more of the boards, one of the electromagnets is activated. 1. An electromagnet device for lifting a plate material, characterized in that it is provided with a control means for gradually decreasing excitation for gradually decreasing the excitation of a part of the electromagnet. (2) The control means is characterized in that the control means includes a re-excitation control means for performing excitation at a current value larger than the current value before the excitation gradual reduction during re-excitation after the excitation gradual reduction control means has been performed. An electromagnetic device for lifting plate material according to claim 1 of the utility model registration claim.