Fiber placement device

A fiber placement device comprising:

• a table;
• a supply mechanism drawing a reinforcing fiber bundle wound on a bobbin to supply the reinforcing fiber bundle;
• a placement mechanism having the reinforcing fiber bundle supplied to be able to place the reinforcing fiber bundle in an arbitrary area on the table;
• a cutting blade that cuts the reinforcing fiber bundle supplied from the placement mechanism toward the table;
• and
• an accumulation portion arranged on a path of the reinforcing fiber bundle delivered from the supply mechanism toward the placement mechanism,
• wherein the accumulation portion comprises:
• a movable roller guiding the reinforcing fiber bundle delivered from the supply mechanism toward the placement mechanism, the movable roller being movable;
• a cylinder;
• a piston arranged within the cylinder;
• a coupling member that couples the movable roller and the piston;
• and
• an adjustment portion that adjusts a force applied to the piston by discharging a fluid from a space on a side opposite to the coupling member with respect to the piston within the cylinder.