MOLDING DEVICE

• Main Authors: TANAKURA ISAMU, FUJISAWA OSAMU, OZAKI YUKIO
• Format: Patent
• Language: English
• Published: 03.02.1987
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PURPOSE:To solve the problem of compressive structure of material tank and make the replenishment of consumed materials easier by providing a pressure piston moving and rubbing up and down freely on the upper part of inside of material tank filled with materials of synthetic resin and the like and detecting and demonstrating the movement of pressure piston. CONSTITUTION:When the piston rod 17 of material supply fluid pressure cylinder 12 is lowered and the pressure piston 13 fixed to the rod end is moved downward, the materials such as synthetic resin in the material tank 7A is pushed out and fed into the molding part 2 through the material supply hose 5, the charging nozzle 4 and the runner 3. As the piston rod 17 and the pressure piston 13 work with high pressure, the downward speed of pressure piston to proportioned with the speed of material feeding without being affected by viscosity of the materials in the tank, and the speed of material feeding is regulated by controlling the operation speed of pressure piston, or more precisely, of the piston rod of material supply fluid pressure cylinder 12. When the downward movement of pressure piston stops, completion of feeding is recognized visually on the detector 14.