| 摘要 |
This injection apparatus performs a low-speed step, a high speed step and a pressure increasing step, and injects and fills the inside of a mold with a molding material. The injection apparatus is provided with a high speed step cylinder, a pressure accumulation part and a coupling mechanism. The high speed step cylinder has a rod and an operating chamber that operates during the high speed step. The coupling mechanism is capable of switching between a coupled state in which the movement of the rod is restricted by the operating pressure of the pressure accumulation part, and a non-coupled state in which the coupled state is released so as to enable the rod to move due to the operating pressure. The coupling mechanism includes a first coupling member, a second coupling member and a drive source. The coupling mechanism is kept in the coupled state from a standard coupled state to a state in which the second coupling member is rotated to less than 90° in either a forward or reverse direction by the drive source. When the second coupling member is forced to rotate by the driving source in the coupled state, the first coupling member rotates such that a first contact surface is in contact with a second contact surface. |
