To provide a feed conveyance device capable of preventing occurrence of loosening of a disc cable and preventing occurrence of trouble due to the loosening securely.

A cable loosening removing device R for pulling a pulling-out corner part 12a of one pipe line P and eliminating loosening of the endless disc cable D is assembled on the pipe line P. This cable loosening removing device eliminates loosening by pulling the pulling-out corner part 12a into the direction Y of extension of a pipe assembly body 25 from the back by a hanging wire 41 in accordance with weight of a weight 50, moving the whole driving gear 16 for a fixed pipe 21 of the pipe assembly body, and giving tension to the disc cable wound around the driving gear always.