The Bali discharge manner in the die for plastic formation and has the Bali discharge feature the die null for plastic formation

摘要

PURPOSE: To enhance the discharge efficiency of burr, to reduce the dimensional fluctuations of a molded product due to the effect of burrs and the percent defective of molding such as burr-biting and to facilitate the automation of plastic molding. ;CONSTITUTION: Angular pins 5 are provided to a fixed template 1 in a protruding state. A movable cavity 3 and a slide cavity 4 are incorporated in a movable template 2. An O-ring 11 is arranged between the attaching part of an ejector pin 6 and an ejector plate 8 and an air hole 12 guiding compressed air sent from an air source (not shown in a drawing) is provided to the ejector plate 8. A hollow air hole 60 is axially provided in the ejector pin 6 and a required number of the air blowoff ports 61 communicating with the air hole 60 are provided to the outer peripheral surface of the ejector pin 6. A spacer 9 provides the space mounting ejector plates 7,8. A code 13 is a molded product (cavity part).;COPYRIGHT: (C)1994,JPO