Wire drawing device and method for manufacturing wire

Abstract

Included are a wire supply part, a wire pulling part, a first capstan mechanism part and a second capstan mechanism part. The first capstan mechanism part includes a plurality of first capstans, a first rotation drive source and a first rotation transmission mechanism part that transmits the rotation drive force of the first rotation drive source to the respective first capstans, and the second capstan mechanism part includes a plurality of second capstans and a plurality of second rotation drive sources that rotatively drive the respective second capstans in an individually manner. Dies are provided between ones of the respective first capstans and the respective second capstans.

1 . A wire drawing machine drawing a wire, comprising:
 a wire supply part supplying a wire;   a wire pulling part pulling the wire;   a first capstan mechanism part provided between said wire supply part and said wire pulling part on a side closer to said wire supply part, which includes:
 a plurality of first capstans; 
 a first rotation drive source; and 
 a first rotation transmission mechanism part transmitting a rotation drive force of said first rotation drive source to said plurality of first capstans; 
   a second capstan mechanism part provided between said wire supply part and said wire pulling part on a side closer to said wire pulling part than said first capstan mechanism part, which includes:
 a plurality of second capstans; and 
 a plurality of second rotation drive sources rotatively driving said plurality of second capstans in an individual manner; and 
   a plurality of dies disposed between ones of said plurality of first capstans and said plurality of second capstans.   
     
     
         2 . The wire drawing machine according to  claim 1 , wherein drawing speed ratios between adjacent ones of said plurality of second capstans are set so that a wire that has passed through all of said plurality of second capstans has a smallest finished wire diameter among a plurality of types of finished wire diameters to be manufactured and that a wire that has passed through part of said plurality of second capstans has one finished wire diameter among the plurality of types of finished wire diameters to be manufactured. 
     
     
         3 . The wire drawing machine according to  claim 1 , wherein drawing speed ratios between adjacent ones of said plurality of second capstans are set so as to gradually decrease toward said wire pulling part. 
     
     
         4 . The wire drawing machine according to  claim 1 , wherein:
 a wire subjected to a wire drawing process is an aluminum wire or an aluminum alloy wire; and   drawing speed ratios between ones of said plurality of first capstans are set so that the wire whose diameter has been reduced to 0.5 mm or smaller is subjected to wire drawing process while the wire is drawn by said second capstan.   
     
     
         5 . The wire drawing machine according to  claim 1 , further comprising a finishing capstan mechanism part provided between said wire supply part and said wire pulling part on a side closer to said wire pulling part than said second capstan mechanism part, which includes:
 at least one finishing capstan;   a finishing rotation drive source; and   a finishing transmission mechanism part transmitting a rotation drive force of said finishing rotation drive source to said finishing capstan.   
     
     
         6 . A strand manufacturing method of manufacturing a strand by drawing a wire with a wire drawing machine including:
 a wire supply part supplying a wire;   a wire pulling part pulling the wire;   a first capstan mechanism part provided between said wire supply part and said wire pulling part on a side closer to said wire supply part, which includes:
 a plurality of first capstans; 
 a first rotation drive source; and 
 a first rotation transmission mechanism part transmitting a rotation drive force of said first rotation drive source to said plurality of first capstans; 
   a second capstan mechanism part provided between said wire supply part and said wire pulling part on a side closer to said wire pulling part, which includes:
 a plurality of second capstans; and 
 a plurality of second rotation drive sources rotatively driving said plurality of second capstans in an individual manner; and 
   a plurality of dies disposed between ones of said plurality of first capstans and said plurality of second capstans,   the method comprising:   setting rotational speeds of said plurality of second capstans so that a wire that has passed through all of said plurality of second capstans has a smallest finished wire diameter among a plurality of types of finished wire diameters to be manufactured and that a wire that has passed through part of said plurality of second capstans has one finished wire diameter among the plurality of types of finished wire diameters to be manufactured; and   changing targets of said plurality of second capstans through which said wire passes to all or part thereof, to thereby manufacture strands having the plurality of types of finished wire diameters.