Automatic bar feeder

摘要

Bar (14) is fed to a lathe or other machining apparatus by a pusher (16) which is drawn forward by a wire or rope (18). The bar lies in a guide groove (12b) which can be closed by shutter members (30) to prevent the bar jumping out of the groove. The shutter members are arranged as pairs (30a, 30b, 30c) following one another along the length of the groove. As the bar is advanced by the pusher (16) the pairs of shutters (30a, 30b and 30c) are caused to open in turn to form a gap (G) along which the pusher can pass.