CLAMPING DEVICE AND MOLDING APPARATUS

摘要

The clamping device has tie bars which are connected to a fixed platen and have engaged parts at a movable platen side, clamping cylinders which are provided on movable platens, half nut devices which are connected to pistons of the clamping cylinders and can mesh with the engaged parts, and stopper devices which restrict the movement of the half nut devices. Each stopper device has at least a driving unit and a stopper part which is driven in a mold opening and closing direction relative to the movable platen by driving of the driving unit and can engage with the half nut device from the fixed platen side. No winding transmission mechanism is interposed between the driving unit and the stopper part.

主权项

1. A clamping device comprising
a fixed platen, a movable platen movable in a mold opening and closing direction relative to the fixed platen, a tie bar which is connected to one platen of the fixed platen or the movable platen and has an engaged part at a side of the other platen of the fixed platen and the movable platen, a clamping cylinder which is provided in the other platen and has a piston movable in the mold opening and closing direction inside it, a split nut device which is connected to the piston and can mesh with the engaged part, and a stopper device which restricts the movement of the split nut device toward said one platen side relative to the other platen, wherein the stopper device has at least a driving unit and a stopper part which is driven in the mold opening and closing direction relative to the other platen by driving of the driving unit and can engage with the split nut device from said one platen side and wherein no winding transmission mechanism is interposed between the driving unit and the stopper part.