DEVICE FOR MANUFACTURING HOLLOW THERMOPLASTIC PARTS Russian patent published in 2001 - IPC

FIELD: devices for processing plastic materials; manufacture of containers such as bottles, flasks by bulge extrusion. SUBSTANCE: device has molding mechanism provided with extruder, molding accessory, top and bottom moving clamps. Molding accessory has collapsible blow form made of two semi- forms and device for compressed-air blowing. Bottom clamp is provided with longitudinal windows in which stops are installed. The latter are fixed on top surface of each of two semi-forms for simultaneous engaging top clamp. Molding mechanism has stops to ensure bottom clamping; mentioned stops are engageable with release members in the course of work. Release members are fixed on both sides of molding accessory. Blowing device is made in the form of delivery channel abutting against parting plane of blowing form to puncture workpiece walls by compressed air. EFFECT: simplified and compacted design; facilitated handling in operation. 10 dwg