| 摘要 |
<p>A fiber placement machine is disclosed, having a band of fibers (23) oriented with its length relatively running along a path with respect to a fiber laydown surface (26), the band being relatively long compared to its bandwidth, the machine comprising a fiber placement head for applying the band to the laydown surface. The fiber placement head comprises a housing (200,207) carrying a plurality of presser elements (206,213) in the form of discs or wafer members carried in a serial disposition substantially widthwise of the band. At least one of the presser elements (213) is movable with respect to the reference axis (226), and at least one of the presser elements (206) is stationary with respect to the axis (226). Contact means (214) is provided on said pressure elements for contacting the band of fibers (23), and fluid operated spring means (223) is provided, conveniently in the form of a fluid-operating bladder, commonly disposed through apertures in the presser elements and which may be inflated to bias the movable presser elements against the fiber laydown surface when the stationary presser element is impressed against the fiber laydown surface. The presser elements have a compliant contact surface for contacting the band of fibers, and the movable pressure element and contact means may thereby float with respect to the housing to adapt to contour variances across the bandwidth on the laydown surface.</p> |
