Device for inserting and pushing a bar into a press-...

B - Operations – Transporting – 21 – B

Patent

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80/13, 80/38

B21B 39/00 (2006.01) B21B 17/08 (2006.01) B21B 25/02 (2006.01) B21B 41/00 (2006.01) B21H 9/00 (2006.01)

Patent

CA 1103072

ABSTRACT A device as disclosed for inserting and push- ing a bar of square cross section into a press-piercing mill, the bar being disposed along a rolling and drilling axis of the mill. The device includes a first thrust means having a rectilinear direction of action. The thrust means is adapted to thrust the bar at a speed for introducing the bar into the mill. A second thrust means having a rectilinear direction of action is adapt- ed for thrusting the bar at a speed for rolling and simultaneous drilling of the bar in the mill. The device also includes an actuator for simultaneously moving the two thrust means from a position in which the direction of action of the first thrust means coincides with the rolling axis and the direction of action of the second thrust means is a distance from the rolling axis, to a position in which the direction of action of the first thrust means is at a distance from the rolling axis and the direction of action of the second thrust means coin- cides with the rolling axis, and vice versa. With this device the loading time for the press-piercing mill is greatly reduced and the efficiency of the mill is accord- ingly increased.

317118

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