Pultrusion of Profiles Having Non-Uniform Cross Sections
AssigneeTsc, LLC
InventorRob Sjostedt
Life of this patent
Estimating the term…
Abstract
Composite profiles, such as rotor blades, airfoils, I-beams, and box beams having non-uniform cross sections, and a system, method and process for pultrusion of composite profiles. The pultrusion of a heavier or thicker cross section portion of the composite profile is performed in-line and upstream from pultrusion of a thinner or lighter portion of the pultruded profile using a separate die for the thicker portion of the cross section, or leading edge slug, in order to optimize the processing conditions, productivity, and consistency of the composite profiles.
Claims13
A method for pultrusion of a composite profile having a non-uniform cross section comprising:
- providing a leading edge slug die for pultruding a leading edge slug of the composite profile;
- providing a primary pultrusion die downstream from the leading edge slug die for pultruding a profile body of the composite profile;
- threading a first set of fibers into the leading edge slug die;
- threading a second set of fibers into the primary pultrusion die;
- heating the leading edge slug die;
- heating the primary pultrusion die;
- adding a first resin to a leading edge slug wet out bath;
- pulling the first set of fibers and the first resin through the leading edge slug die to form the leading edge slug;
- adding a second resin to a main wet out bath;
- and
- integrating the leading edge slug with the profile body to form the composite profile by pulling the leading edge slug through the primary pultrusion die while pulling the second set of fibers and the second resin through the primary pultrusion die to form the profile body.
A composite profile having a non-uniform cross section manufactured by a process comprising the steps of:
- providing a leading edge slug die for pultruding a leading edge slug of the composite profile;
- providing a primary pultrusion die downstream from the leading edge slug die for pultruding a profile body of the composite profile;
- threading a first set of fibers into the leading edge slug die;
- threading a second set of fibers into the primary pultrusion die;
- heating the leading edge slug die;
- heating the primary pultrusion die;
- adding a first resin to a leading edge slug wet out bath;
- pulling the first set of fibers and the first resin through the leading edge slug die to form the leading edge slug;
- adding a second resin to a main wet out bath;
- and
- integrating the leading edge slug with the profile body to form the composite profile by pulling the leading edge slug through the primary pultrusion die while pulling the second set of fibers and the second resin through the primary pultrusion die to form the profile body.
A pultrusion tooling system for pultruding a composite profile having a non-uniform cross section comprising:
- a leading edge slug die for pultruding a first portion of the composite profile having a first cross section thickness;
- a primary pultrusion die for pultruding a second portion of the composite profile having a second cross section thickness, wherein the second cross section thickness is less than the first cross section thickness;
- a leading edge wet out bath for adding a first resin to the first portion of the composite profile;
- a mandrel for shaping the second portion of the composite profile;
- an overwrap infeed tool for wrapping fibers around the mandrel;
- and
- a main wet out bath for adding a second resin to the second portion of the composite profile.
Dependencies are inferred from the claim text.