Device for inserting and pushing a bar into a press-piercing mill

A device whereby a square bar is inserted and pushed into a press-piercing mill (PPM), the bar being disposed along the rolling and drilling axis of the mill, the apparatus being characterised in that it comprises:

• a first thrust means (20) having a first direction of action (R.sub.1) and thrusting the bar (7) at a speed set for introducing the bar into the press-piercing mill (PPM);
• a second thrust means (14) having a second direction of action (R) and thrusting the bar (7) at a speed set for rolling and simultaneously drilling the bar (7) in the press-piercing mill (PPM), and
• an actuator (34) for simultaneously moving the first and second thrust means (20, 14) from a position in which the first direction of action (R.sub.1) coincides with the PPM rolling axis (A) and the second direction of action (R) is at a distance from the rolling (A) to a position in which the first direction of action (R.sub.1) is at a distance from the rolling axis (A) and the second direction of action (R) coincides with the axis (A) and vice versa.