To easily and efficiently perform the insertion and amount of a core material by fixing one end of cylindrical stretchable fabric in breadthwise direction to a fixing means on a fixed stand, and stretching the other end into core material inserting width through the operation of an actuator.
A movable arm 12 is moved closer to the side of a fixed arm 11 so as to be narrower than the width of cylindrical stretchable fabric 3. Then, the stretch fabric 3 is inserted into the fixed arm 11 and the movable arm 12, and a spacer 17 is inserted into top ends 16 of both the arms 11 and 12. Next, an actuator 15 is operated, and the movable arm 12 is moved separate from the fixed arm 11. Thus, after the stretch fabric 3 is stretched in the breadthwise direction, a core material 4 is inserted from the top ends 16 of the fixed arm 11 and movable arm 12 into a guide groove 13 and fitted into the stretch fabric 3. Next, the spacer 17 is detached, the movable arm 12 is moved to the side of the fixed arm 11 by the actuator 15, stretching is canceled, and the core material 4 is integrally detached out of the stretch fabric 3.
HIRANO MICHIO
KUDO TOSHIYUKI
