Method and device for producing a plastic profile
AssigneeThomas GmbH + Co. Technik + Innovation KG
InventorKlaus Jansen
Life of this patent
Estimating the term…
Abstract
Plastic profiles are produced by a pultrusion method. For this, a mold is moved periodically relative to the stationary plastic profile and said profile is held by a holding means and transported away. In particular, the starting and the stopping of the method are problematical, since a tensile stress must be applied, by which both “slack” fibers and “rigid” profiles can be drawn through the mold. The invention creates a method and a device for simple and reliable manufacture of plastic profiles. For this, it is provided that at least one cross section of a receiving space of the at least one holding means is changed along a longitudinal axis of the holding means in order to grasp a reinforcement and/or the plastic profile.
Claims13
A method for producing a curved plastic profile, the method comprising:
- providing continuous reinforcement made of strands and/or textiles,
- forming a first section and a plurality of additional sections of the curved plastic profile in a mold, each section of the curved plastic profile comprising the continuous reinforcement embedded in a matrix, wherein the first section of the curved plastic profile is directly adjacent to a dry section of the continuous reinforcement which is not embedded in the matrix, wherein forming each section of the curved plastic profile comprises:
- changing cross sections of a receiving space in at least one holding means along a longitudinal axis of the at least one holding means such that the at least one holding means can grasp the dry section of the continuous reinforcement and/or a grasped section selected from the first section and the plurality of additional sections of the curved plastic profile,
- grasping with the at least one holding means, at least temporarily, the dry section of the continuous reinforcement and/or the grasped section of the curved plastic profile, and
- pulling the continuous reinforcement through the mold with the at least one holding means and, in the mold, embedding the continuous reinforcement in the matrix;
- periodically moving the mold and the at least one holding means relative to each other;
- wherein forming one additional section of the plurality of additional sections of the curved plastic profile comprises:
- changing the cross sections of the receiving space in the at least one holding means along the longitudinal axis of the at least one holding means such that the at least one holding means can grasp the dry section of the continuous reinforcement and the first section of the curved plastic profile,
- simultaneously firmly grasping with the at least one holding means both the dry section of the continuous reinforcement and the first section of the curved plastic profile, and
- pulling the continuous reinforcement through the mold with the at least one holding means and, in the mold, embedding the continuous reinforcement in the matrix.
Dependencies are inferred from the claim text.