Patent ID: 8137093

Claim:
A clamp providing a moving platen and a fixed platen each with tiebar insertion holes and tiebars extending therethrough, the moving platen being able to advance and retract along the tiebars to and from the fixed platen, the tiebars having first engagement parts and second engagement parts, comprising: (a) a first engaging means that engage with the first engagement parts of the tiebars after the moving platen is moved along the tiebars towards the fixed platen to close a die or mold arranged in the clamp, (b) a second engaging means that engage with the second engagement parts, the second engagement parts being formed at ends of the tiebars positioned proximally to the fixed platen, (c) a pushing means that cooperates with the tiebars and pushes the moving platen toward the fixed platen after the die or mold is closed, the pushing means being arranged in the tiebar insertion holes of the fixed platen and detachably connected to the second engaging means, and (d) a tiebar inserting and extracting means for inserting and extracting the tiebars into or from the tiebar insertion holes, the tiebar inserting and extracting means being coupled with ends of the tiebars adjacent to the fixed platen and positioned distally to a side of the fixed platen that engages the die or mold.