Method for producing a component made of a fiber-reinforced plastic
AssigneeZF Friedrichshafen AG
InventorsIngolf MÜLLER, Holger BUBLIES, Andre STIEGLITZ
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AssigneeZF Friedrichshafen AG
InventorsIngolf MÜLLER, Holger BUBLIES, Andre STIEGLITZ
Estimating the term…
A method for producing a structural component part (1, 33) from a fiber-reinforced plastic according to a three-dimensional winding process. A threadlike fiber material (12) is supplied on at least one bobbin (18) and constructed as a towpreg semifinished product is wound around at least one filament carrier (11) in a winding pattern by a computer-controlled winding device. The towpreg semifinished product is a mixture (30) of a thermoset resin, a hardener, an accelerator and plastic fibers (29) embedded in the mixture (30). The fiber material (12) is guided on the filament carrier (11) by a guide element (24) having a circular outlet cross section and arranged at a fiber guide device (25), the fiber material (12) deflected by the guide element (24) when the winding pattern is formed. The fiber material (12) is brought in contact with the guide element (24) during a deflection.
A method for producing a structural component part from a fiber-reinforced plastic according to a three-dimensional winding process, wherein a threadlike fiber material which is supplied on at least one bobbin and is constructed as a towpreg semifinished product is wound around at least one filament carrier in at least one winding pattern by means of at least one computer-controlled winding device, wherein the towpreg semifinished product comprises a mixture of a thermoset resin, at least one hardener, at least one accelerator, and plastic fibers embedded in the mixture, the fiber material is guided on the filament carrier by a guide element which has a substantially circular outlet cross section and which is arranged at a fiber guide device, and the fiber material is deflected by the guide element when the winding pattern is formed, wherein the fiber material is temporarily brought in contact with the guide element during a deflection, and wherein the proportions of hardener and accelerator in the thermoset resin are selected such that a temporary liquefaction of the thermoset resin occurs because of a friction heat generated on the surface of the fiber material through a deflection of the fiber material and/or by means of additional heat input in the area of contact with the guide element.
A device for producing a structural component part from a fiber-reinforced plastic according to a three-dimensional winding process, comprising at least one computer-controlled winding device for winding a threadlike fiber material in at least one winding pattern around at least one filament carrier, which threadlike fiber material is supplied on at least one bobbin and is constructed as a towpreg semifinished product, wherein the towpreg semifinished product comprises a mixture of a thermoset resin, at least one hardener, at least one accelerator and plastic fibers embedded therein, wherein a guide element having a substantially circular outlet cross section is arranged at a fiber guide device for guiding and deflecting the fiber material during the formation of the winding pattern, wherein the fiber material can be brought into contact with the guide element temporarily during a deflection, and wherein the proportions of hardener and accelerator in the thermoset resin are selected in such a way that a temporary liquefaction of the thermoset resin occurs because of a friction heat generated on the surface of the fiber material as a result of a deflection of the fiber material and/or by means of the additional introduction of heat in the region of contact with the guide element.
Dependencies are inferred from the claim text.