MOLDING APPARATUS AND HEATING DEVICE OF PIT AND PIT MOLDING METHOD

• Main Authors: TAKAHASHI KIYOSHI, OKADA KAZUHIRO, AZUMA YOSHIO
• Format: Patent
• Language: English
• Published: 03.10.2000
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CESSPOOLS; FIXED CONSTRUCTIONS; PERFORMING OPERATIONS; SEWERAGE; SEWERS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WATER SUPPLY; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a pit molding apparatus capable of automatically performing a series of pit molding processings and capable of uniformly heating the inner periphery, outer periphery and circumference of a cylindrical part molded as a receiving mouth and to enhance productivity and the quality of molded product. SOLUTION: A pit molding apparatus 1 is provided with a plurality of moving plates 9 on which a pit 11 made of a synthetic resin is placed, a feed means 3 for forming a plurality of moving plates 9, the heating device 25 arranged above the feed means 3 and having a heating furnace in which the cylindrical part of the pit 11 is inserted, a blow molding device 53 arranged on the downstream side in a feed direction of the heating device 25 and molding the cylindrical part so as to expand the diameter thereof and the lift means arranged just under the heating device 25 and the blow molding device 53 and raising each of the fed moving plates 9 to separate the same from the feed means 3 and inserting the cylindrical part of the measure placed on each of the moving plates 9 into the heating device and the blow molding device 53.