The present invention relates to fiber spreading apparatus, and is especially one fiber spreading head device in fiber spreading apparatus resulting in raised fiber spreading quality. The fiber spreading head device has one pressurizing mechanism and one guide wheel set separately on two ends of the frame, one repeated feeding mechanism, one shearing mechanism, one clamping mechanism, one motor, and four reversing valves connected to the gas source. The present invention has integrated clamping, shearing, feeding and pressurizing functions, possesses two work modes of spreading belt and spreading fiber, and may be used in making composite material members in aeronautic and astronautic industry. |