| 摘要 |
An improved ejector retraction mechanism comprises a fixed actuator, a pair of blocking members positively movable both in and out of the path of the actuator, whereby to positively retract ejector pins on closing of the molds. The actuator and blocking members have flat parallel engaging surfaces for long wear and durability and the actuator also has an enlarged portion which enters a channel and aligns and interlocks the molds. |
