DEVICE FOR ATTACHING/DETACHING NOZZLE AUTOMATICALLY

摘要

PROBLEM TO BE SOLVED: To attach/detach a nozzle to/from a heating cylinder by power. SOLUTION: A wrench member 3 is rotated normally through a sprocket 12 and a spline shaft 2 by a motor to engage a nozzle 18 with a heating cylinder 17. In this process, a bias spring 4 advances the wrench member 3 in accordance with the progress of the engagement. When the wrench member 3 is rotated reversely, the nozzle 18 is detached from the heating cylinder 17. A stopper 19 fits fitting edges 3c, 3d and regulates the moving range of the wrench member.