Method for manufacturing a profiled preform

摘要

Pultrusion methods and apparatus for manufacturing a profiled preform or FRP-component with cross-sectional segments that extend angularly to one another from a plurality of semifinished products in a quasi-continuous process, where: at least one multilayer semifinished product arrangement [of a multilayer semifinished product arrangement] is dispensed from a dispenser unit in order to manufacture the preform, with the multilayer semifinished product arrangement dispensed from the dispenser unit being fed to the forming device and including a combination of several webs of semifinished reinforcement fiber layers and at least one resin film; the semifinished product arrangement is guided through a forming device and at least one cross-sectional segment of the semifinished product arrangement is angled in order to form an angle profile, with the semifinished product arrangement being compressed in a pressing device, optionally after a hardening process, and with a longitudinal section of the preform or the component being removed after a cutting process.

主权项

1. A pultrusion method for manufacturing at least one of a profiled preform and a fiber-reinforced plastic (FRP) with cross-sectional segments that extend angularly to one another in a quasi-continuous process, comprising:
dispensing at least two semifinished reinforcement fiber layers and at least one resin film therebetween from respective dispenser rolls of a dispenser unit to form at least one multilayer semifinished product arrangement; drawing the semifinished product arrangement into a forming device using a pulling device downstream of the forming device; angling at least one cross-sectional segment of the semifinished product arrangement by guiding the semifinished product arrangement through the forming device such that the cross-sectional segments of the semifinished product arrangement form an angle profile; compressing the semifinished product arrangement into the cross-sectional shape, in which the semifinished product arrangement exits the forming device, in a pressing device by moving together movable tool parts and subsequently moving the tool parts apart from one another, wherein a feed movement of the semifinished product arrangement takes place while the tool parts are moved apart from one another; heating and compressing the semifinished product arrangement in the pressing device such that partial cross-linking only of a resin of the resin film takes place and the cross-sectional segments of the semifinished product arrangement are fixed relative to one another in a shape-preserving fashion, as well as a compaction of the cross-sectional segments, and wherein the drawing movement of the semifinished product arrangement is interrupted during the compression process; subsequently hardening the semifinished product arrangement in a tempering furnace to further cure the resin of the resin film to obtain a hardened semifinished product arrangement; and cutting a longitudinal section off the semifinished product arrangement with the bonded fiber layers and removing this longitudinal section as at least one of the profiled preform and the fiber-reinforced plastic (FRP), wherein the semifinished reinforcement fiber layers are sewn together prior to being angled and the resin of the resin film is provided in a proportion of no more than 15% of a total weight of the multilayer semifinished product arrangement.