wire drawing machine
wire drawing machine
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 wire 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.
It is therefore the principal object of the present invention to provide a wire bunching machine which is able to draw very thin wires at high speed without danger of breaking.
It is another object of the present invention to provide a novel and improved driven roller arrangement between successive dies of a wire drawing machine so as to minimize danger of breaking of the wire while the wire is being drawn at a high speed.
According to the present invention a wire drawing machine having a plurality of wire drawing dies is provided with at least two rollers in the path of a wire between successive dies. Each roller is independently driven and contacts the wire through an angle of less than 360°
Between two successive dies of a wire drawing machine there are positioned in the path of the wire two rollers which are independently driven and each of which contacts the wire through an angle of less than 360° with the sum of the angles of contact of the rollers being 360°. Each of the rollers has a conical taper in the axial direction from the advancing to the departing portions of the wire on a roller and the rollers are positioned with their adjacent peripheral surfaces moving in opposite directions.
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 wire 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.
It is therefore the principal object of the present invention to provide a wire bunching machine which is able to draw very thin wires at high speed without danger of breaking.
It is another object of the present invention to provide a novel and improved driven roller arrangement between successive dies of a wire drawing machine so as to minimize danger of breaking of the wire while the wire is being drawn at a high speed.
According to the present invention a wire drawing machine having a plurality of wire drawing dies is provided with at least two rollers in the path of a wire between successive dies. Each roller is independently driven and contacts the wire through an angle of less than 360°