JPS54139876A - Manufacture of rows of pin group - Google Patents

Abstract

PURPOSE: To contrive the improvement of the production efficiency and the saving of the material cost, by giving a tension to the multiple groups of large diameter wires being sent parallelly so as to reduce the diameter of the wire and to eliminate the interwire gaps, and by applying adhesives to this wire group for every specified interval on purpose to bond together, and then, by cutting the wire group into a specified length.

CONSTITUTION: The large diameter wires 20, uncoiled from all wire reels 3 of the obliquely arranged plural sets of reel stands 1, are parallelly lined up and are sent out as the wire group W. From the first roll to the final roll 21W24 in this order, the roll's circumferential speed is sequentially increased so as to give a tension to the wire 20 whose diameter is hereby reduced. Hereupon, the high frequency heating coil 25 prevents the work hardening of the wire group W while the plastic deformation; hereby, the deformation resistance is reduced, which prevents the breaking of the wire 20 while the wire drawing work. Thus prepared wire group W with a specified diameter is passed through the gapless shape adjusting comb 7 and the hourglass type roll 8 so as to remove the gap between wires 20; this gapless wire group W' is applied with adhesives applying roll 13 for every specified interval, and is hardened in the drying furnace 14; after that, the wire group W' is cut by the cutting roll 16 into a specified length and the rows of pin group P is obtained.

COPYRIGHT: (C)1979,JPO&Japio