Method and device for shaping of composite material
A method and device for shaping of an article of composite material. The method includes arranging a blank of composite material on a top surface of a forming tool. A portion of the blank is arranged to protrude outside the top surface of the tool. At least one support is arranged in contact with an underside of the protruding portion of the blank. An air-tight foil is arranged over the arrangement. The air-tight foil is forced towards the blank. The support is lowered until the blank is shaped over the tool. The support is stopped and/or removed. The device includes a tool including a top surface and side surface for shaping at least one blank of composite material into an article having a predetermined profile; and a air-tight foil. The device further includes at least one support arranged to be in supporting contact with the underside of the protruding part of the blank.
1. A method of shaping an article of composite material, the method comprising:
arranging a blank of composite material on a top surface of a forming tool, a portion of the blank being arranged to protrude outside the top surface of the tool and supporting the protruding portion with a plurality of supports successively arranged adjacent the tool, wherein the supports are in contact with an underside of the protruding portion of the blank;
arranging an air-tight foil over the arrangement of the blank, the tool and supports;
forcing the air-tight foil towards the blank;
lowering the supports in a predetermined order until the blank is shaped over the tool; and
stopping movement of and/or removing the supports,
wherein a first support of the plurality of supports is arranged next to the tool is lowered when a force from the air-tight foil acting on said first support is higher than a pre-determined value, and wherein at least one successive support of the plurality of supports arranged adjacent to said first support is lowered when a force acting on said successive support is higher than a pre-defined value and a force acting on a preceding support of the plurality of supports is reduced below a pre-defined value.
2. The method according to claim 1 , wherein the protruding portion of the blank is lowered by lowering the supports in a predetermined order in a direction outwards from the tool.
3. The method according to claim 1 , wherein the protruding portion of the blank is lowered by lowering the supports in a predetermined order alongside the tool.