a supply device including an accommodation portion accommodating a rubber plug, a supply path, in communication with the accommodation portion, through which the rubber plug passes, and a discharge port from which the rubber plug is discharged after passing through the supply path;

a sensor detecting an orientation of the rubber plug supplied by the supply device;

an orientation correction device including an accommodation hole accommodating the rubber plug, the orientation correction device changing the orientation of the rubber plug to a predetermined orientation in the case where the orientation of the rubber plug detected by the sensor is different from the predetermined orientation;

a dispatch device dispatching the rubber plug adjusted to be in the predetermined orientation; and

an accommodation assistance device moving one of, or both of, the accommodation hole and the discharge port in a reciprocating motion to move the position of the accommodation hole with respect to the discharge port at least between a first position directly facing the discharge port and a second position shifted from the first position and facing a part of the discharge port until the rubber plug is accommodated in the accommodation hole.