Induction heated tool system for hardening polymer-fiber components

Patent metadata

Field	Value
Publication number	US-2022379526-A1
Application number	US-202217826254-A
Country	US
Kind code	A1
Filing date	May 27, 2022
Priority date	May 31, 2021
Publication date	Dec 1, 2022
Grant date	—

Abstract

An induction heated tool system for receiving and heating polymer-fiber components from a starting temperature to a target temperature includes a tool part having a receiving cutout, the tool part formed from a thermally dimensionally stable material so it has a coefficient of thermal longitudinal expansion less than 10×10−6 K−1, or less than 5×10−6 K−1, or less than 4×10−6 K−1 in the plane of the largest dimension of the receiving cutout, at temperatures between the starting and target temperatures. A receiving cutout for receiving a polymer-fiber component is in the tool part, the receiving cutout delimited by a receiving surface portion so a polymer-fiber component received in the receiving cutout can lie against the receiving surface portion. A susceptor element includes a ferromagnetic material with a first Curie temperature. The susceptor element is on a surface portion of the tool part outside the receiving cutout and the receiving surface portion.

First claim

1 . An induction heated tool system for receiving and for heating polymer-fiber components from a starting temperature to a target temperature, comprising:
at least one tool part, wherein at least one receiving cutout for receiving a polymer-fiber component is formed in the tool part, wherein the receiving cutout is delimited by a receiving surface portion of the tool part, such that a polymer-fiber component received in the receiving cutout can lie against the receiving surface portion; wherein the tool part is formed from a thermally dimensionally stable material so that the tool part has a coefficient of thermal longitudinal expansion which is less than 10×10 −6 K −1 , or less than 5×10 −6 K −1 , or less than 4×10 −6 K −1 , in a plane of a largest dimension of the receiving cutout, in all directions of extent of the receiving cutout, at temperatures in a range between the starting temperature and the target temperature, at least one susceptor element comprising a ferromagnetic material which has a first Curie temperature corresponding to the target temperature, wherein the at least one susceptor element is on a surface portion of the tool part that lies outside the receiving cutout and the receiving surface portion; and at least one induction device to generate an alternating magnetic field at least in a region where the at least one susceptor element is disposed.

2 . The induction heated tool system according to claim 1 , wherein the at least one tool part is formed from a metal paramagnetic material.

3 . The induction heated tool system according to claim 1 , wherein the at least one tool part is formed from a metal ferromagnetic material, and
wherein the Curie temperature of the metal ferromagnetic material is above the target temperature.

4 . The induction heated tool system according to claim 1 , wherein the at least one susceptor element comprises a further ferromagnetic material which has a second Curie temperature below the first Curie temperature.

5 . The induction heated tool system according to claim 1 , wherein the at least one susceptor element comprises a material with high thermal conductivity, and/or copper.

6 . The induction heated tool system according to claim 1 , wherein the at least one susceptor element is formed from particles of ferromagnetic material and from a matrix material.

7 . The induction heated tool system according to claim 6 , wherein the matrix material is a thermoplastic material which has a melting temperature above the first Curie temperature.

8 . The induction heated tool system according to claim 1 , wherein the at least one tool part has a main portion in which the receiving cutout is made,
wherein rib elements extend away from a surface portion of the main portion that lies outside the receiving cutout and the receiving surface portion, wherein at least one free space, in which the induction device is disposed, is formed between the rib elements, and wherein the at least one susceptor element is fastened to the portion of the surface of the main portion that delimits the free space.

9 . The induction heated tool system according to claim 8 , comprising at least one further susceptor element comprising a ferromagnetic material which has a first Curie temperature corresponding to the target temperature, and
wherein the further susceptor element is on a surface of one of the rib elements that faces the free space.

10 . The induction heated tool system according to claim 1 , wherein the at least one susceptor element is connected to the tool part in a region of its center point by way of a fastening element.

11 . The induction heated tool system according to claim 1 , wherein the at least one susceptor element is connected to the tool part in a region of its center point by way of a material bond.

12 . The induction heated tool system according to claim 10 , wherein a deformable heat conductor is between the at least one susceptor element and the tool part.

13 . The induction heated tool system according to claim 11 , wherein a deformable heat conductor is between the at least one susceptor element and the tool part.

14 . The induction heated tool system according to claim 1 , comprising a multiplicity of susceptor elements comprising a ferromagnetic material which has a first Curie temperature corresponding to the target temperature, wherein the multiplicity of susceptor elements are on a surface portion of the tool part,
wherein the multiplicity of susceptor elements are attached to the surface portion adjacent to one another, and wherein gaps are between the susceptor elements of the multiplicity of susceptor elements.

Assignees

• Airbus Operations Gmbh

Inventors

• Looks Jan
• Kerger Sebastian
• Siagam Paulin Fideu
• Schubert Konstantin

Classifications

• B29C35/002

  Component parts, details or accessories; Auxiliary operations · CPC title

• B29C35/0805 Primary

  using electromagnetic radiation · CPC title

• H05B6/14

  Tools, e.g. nozzles, rollers, calenders · CPC title

• B29C33/06

  using radiation {, e.g. electro-magnetic waves, induction heating} · CPC title

• B29C2035/0811

  using induction · CPC title