Apparatus for manufacture of hollow objects

Abstract

Abstract MACHINE FOR THE CONTINUOUS BLOWING OF HEATED TUBULAR PERFORMS OF THERMOPLASTIC MATERIAL. A TURRET ROTATING CONTINUOUSLY ABOUT A VERTICAL AXIS, CARRIES A PLURALITY OF MOLDS AND BLOWING HEADS, ONE FOR EACH MOLD. EACH MOLD CONSISTS OF A HALF FIXED WITH THE TURRET, AND A SECOND HALF PIVOTABLE FROM A FIRST OPEN POSITION TO A SECOND POSITION CLOSED UPON ITS FIXED HALF. A CHAIN HAS TUBULAR LINK PIVOTS EACH ADAPTED TO HOLD IN DEPENDING RELATION THEREFROM, A RESPECTIVE HEATED PREFORM. ROTATION OF THE TURRET IS SYNCHRONIZED WITH TRAVEL OF THE CHAIN SO THAT EACH PREFORM MOVES WITH THE CHAIN INTO A RESPECTIVE OPEN, FIXED MOLD HALF. CAMS FIXED ABOUT THE AXIS OF ROTATION OF THE TURRET COOPERATE WITH CAM FOLLOWER MEANS TO (A) CLOSE EACH MOVABLE MOLD HALF ONTO ITS FIXED HALF TO ENCLOSE THE PREFORM, (B) LOCK THE TWO MOLD HALVES TOGETHER, (C) MOVE THE CORRESPONDING BLOWING HEAD INTO PRESSURE-TIGHT RELATION WITH THE TUBULAR CHAIN-LINK PIVOT, (D) OPERATE A VALVE TO CONNECT THE INTERIOR OF THE PREFORM, THROUGH THE TUBULAR CHAIN-LINK PIVOT, TO A SOURCE OF COMPRESSED AIR TO EXPAND THE PREFORM TO THE SHAPE OF THE MOLD, (E) OPERATE THE VALVE TO SHUT OFF COMPRESSED AIR AND TO CONNECT THE PREFORM TO EXHAUST, (F) COOL THE SHAPED ARTICLE, (G) RELEASE THE MODL LOCK, (H) OPEN THE MOLD, AND (I) REMOVE THE SHAPED ARTICLE FROM ITS CHAIN-LINK PIVOT. THE OPERATION IS RAPID, CONTINUOUS, REGULAR, UNIFORM AND WITHOUT DWELL.

Inventors

• 👤 Edouard Lecluyse
• 👤 Antoine Beranger

Bibliographic Details