Patent ID: 7575426
Filing Date: 2009-08-18
Classification: B29C

Abstract:
1. A clamping device for selectively clamping a first die set or a second die set, each die set including a stationary die, a movable die, and parting surfaces formed between the dies, the clamping device comprising: a stationary platen unit to which the stationary die of the first die set or the stationary die of the second die set is attached; a movable platen unit to which the movable die of the first die set or the movable die of the second die set is attached; a plurality of tie bars stretched between the stationary platen unit and the movable platen unit and arranged parallel to one another at respective outer peripheral portions of the platen units; and a pressure mechanism which presses the stationary platen unit and the movable platen unit toward each other, at least one of the stationary and movable platen units including the backup member being configured to move between a first position in which the backup member is in contact with both the platen body and the die fixing plate and a second position in which the backup member is separate from the platen body or the die fixing plate, and the backup member being situated in the first position when the first die set with the parting surfaces wider than the pressure surface is attached to the die fixing plate and being moved to the second position when the second die set smaller than the first die set is attached to the die fixing plate.