| 摘要 |
PCT No. PCT/EP93/03699 Sec. 371 Date Nov. 1, 1995 Sec. 102(e) Date Nov. 1, 1995 PCT Filed Dec. 27, 1993 PCT Pub. No. WO94/26509 PCT Pub. Date Nov. 24, 1994A method and apparatus for replacing the dies (10, 13) in thermoforming equipment provided with a base (2), a supporting structure (12) supported by the base (2), a supporting head (9) for a counter-die (10) carried by the supporting structure, a supporting table (12) for a die supported by the base (2) beneath the supporting head (9), actuation means for the head (9) and for the supporting table (12) to control a sequence of controlled insertion and withdrawal movements between the head (9) and the supporting table (12) to cause the die (13) to close against and open away from the counter-die (10), feed means for a sheet of thermoformable material for pressing designed to operate synchronously with the activating means and including a pair of longitudinal members (15) to advance the sheet in a direction substantially normal to the direction in which the die (13) opens and closes. The method provides for withdrawal of the longitudinal members (15) into a waiting position, insertion or removal of the counter-die (10) closed on the die (13) in a direction transverse to that of the longitudinal members (15) and advance of the longitudinal members (15) from the waiting position to the working position. |
