| 摘要 |
PURPOSE:To provide a product of good accuracy without contraction, strain, void or the like, by a method wherein compression process and mold opening and closing process are performed by a cylinder provided on a die plate at stationary side, movement of a die plate is restricted by a reverse movement restricting mechanism, and interference adjustment is performed by an interference adjusting mechanism. CONSTITUTION:After a cavity 10 is formed, a toggle link 17 is elongated by a cylinder 18 and an abutting member 16 abuts on a tie-bar support plate 3, and an abutting member 15 comes close to a die plate 2 at movable side thereby compression margin delta is formed between the die plate 2 and a restricting plate 21. Subsequently, the die plate 2 at movable side abuts on the restricting plate 21 by means of a cylinder 5 and a melted resin 13 is injected and filled in the cavity 10. After completing the gate seal, the die plate 2 at movable side is pulled by the cylinder 5 and the filled resin is compressed. As the resin temperature within the cavity 10 becomes cooled, the compression pressure is adjusted and decreased gradually. The compression margin delta is moved between the die plate 2 at movable side and the restricting plate 21. Since the compression ratio is controlled smoothly according to specific volume during cooling the resin, surface accuracy and configuration accuracy can be obtained without contraction or strain. |
