PARISON SUPPLY DEVICE AND SUPPLY METHOD AND BLOW MOLDING MACHINE AND BLOW MOLDING METHOD USING SAME

• Main Authors: YAMADA TAKUO, NARUTAKI KOUICHI, KOMATSU IKUO, USAMI AKIHIRO, HIROTA NORIHISA, KANEKO EIICHIRO, TAKAHASHI YOUTAROU, YONEDA ATSUSHI
• Format: Patent
• Language: English; Korean
• Published: 08.03.2017
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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

척이 패리슨에 접촉할 때에, 패리슨 외면과 척 내면이 마찰되는 현상이나, 척이 패리슨을 잡은 직후에 척 상에 패리슨의 고임이 형성되는 현상을 회피하고, 패리슨의 두께 분포를 균일하게 유지하고, 고품질의 성형체를 제조하고, 생산성을 향상시킨 블로우 성형을 행한다. 압출 다이로부터 토출되는 패리슨을 블로우 금형에 공급하는 패리슨 공급 장치(1)로서, 압출 다이(10)로부터 하방으로 토출된 패리슨(P)을 상하에서 잡는 한 쌍의 척(2)과, 한 쌍의 척(2)이 패리슨(P)을 잡는 동작, 및 한 쌍의 척(2)의 이동을 제어하는 척 동작부(3)를 구비하고, 척 동작부(3)에 의해, 한 쌍의 척(2)은 하방으로 이동하면서 패리슨(P)을 잡는 동작을 행한다. By avoiding a phenomenon that an outer surface of a parison and an inner surface of a chuck rub against each other upon contact of the chuck with the parison as well as a phenomenon that accumulations of parison are formed on the chuck immediately after gripping of the parison by the chuck, there is provided a blow molding capable of maintaining the parison thickness distribution uniform, fabricating high-quality molded products, and improving its productivity. Disclosed is a parison supply device 1 for supplying, to a blow mold, a parison discharged from an extrusion die, the parison supply device 1 including: a pair of chucks 2 for pinching, from above and below, a parison P discharged downward from the extrusion die 10; and a chuck operation part 3 for controlling an operation of pinching the parison P by the pair of chucks 2 and an operation of moving the pair of chucks 2. By the chuck operation part 3, the pair of chucks 2 performs the operation of pinching the parison P while being moved downward.