| 摘要 |
PURPOSE:To prevent the breaking of wire by a method wherein the number of turns of wire is memorized, and the feeding condition of the wire is detected by a detecting device based on the information of the above-mentioned number of turns of the wire, thereby enabling to recognize the finish of wire to be supplied. CONSTITUTION:A through hole 23b is provided on the flange part 23a of a spool 23. An inverted U-typed supporting member 24 is corresponded to the through hole 23b. A photo transistor 25 and a lamp 28 are provided on the member 24. A counter 26 and an alarm circuit 27 are connected to the transistor 25. The number of a gold wire passed through the penetrated hole 23b when the gold wire is wound around is counted and memorized by a counter 26. Accordingly, based on the information memorized in advance, the degree of consumed quantity of the wire can be recognized by the number of turns of the spool 23. |
