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Wire drawing machine [2012-03-27]

       The present invention relates to a fine wire drawing machine having a plurality of dies, more particularly, to the arrangement of driven rollers for carrying the wire between successive dies.
       In presently known wire drawing machines it has been a practice to position a driven roller between two successive dies with the wire being looped around the roller through an angle of 360° in order to relieve the tension on the wire between the dies. During the drawing process the moving wire occasionally develops such a strong vibratory movement that the portion of the wire arriving at the roller will become positioned on top of the portion which is departing the roller.
       Any breaks in the wire occurring during the drawing process are extremely detrimental to carrying out the process. The reel or spool upon which the rod breakdown machine is being wound will be only partially filled and it is not possible to fasten the torn off end of the wire to the other torn end.
       In order to avoid such difficulties such cold drawing processes are carried out at relatively slow speeds so as to minimize the danger of breaking of the drawn wire. However, by slowing the speed of the wire drawing process to such an extent again increases the cost of the process brick machinery.

日本一本大道高清视频dvd