Fibre appliance tool, fibre placement device, fibre placement method, and production method

Patent metadata

Field	Value
Publication number	US-9757879-B2
Application number	US-201514728480-A
Country	US
Kind code	B2
Filing date	Jun 2, 2015
Priority date	Jun 3, 2014
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A fiber application tool for a fiber application process designed, in particular, as an AFP, has a fiber contact surface area, which has a fiber contact surface for applying and/or pressing the fibers onto a work surface. The tool further includes an activation device for activating an adhesive, matrix, resin, or binder material provided at the fibers by means of an activation radiation so that the fibers are tacked onto the work surface. The fiber contact surface area for the activation radiation may be transparent and that the activation device may be designed so to guide and/or deliver the activation radiation through the transparent fiber contact surface area to the fibers to be pressed by the fiber contact surface.

First claim

What is claimed is:

1. A fiber application tool for a fiber application process having a fiber contact surface area, which has a fiber contact surface for contacting fibers for the purpose of redirecting and/or pressing fibers for application onto a work surface and having an activation device for activating, by means of an activation radiation, an adhesive, matrix, resin, or binder material provided at the fibers, such that the fibers are tacked onto the work surface,
wherein the fiber contact surface area is transparent for the activation radiation and that the activation device is configured to guide and/or deliver the activation radiation through the transparent fiber contact surface area to the fibers to be pressed by the fiber contact surface,
wherein the fiber contact surface area is formed at a circumference of a fiber application and/or compaction roller,
wherein at least one circumferential surface area of the fiber application and/or compaction roller has the fiber contact surface configured in a transparent manner, and
wherein the activation device is configured to guide the activation radiation starting from an interior of the fiber application and/or compaction roller through the transparent circumferential surface area to the fibers, which contact the fiber contact surface area according to a specified use.

2. The fiber application tool according to claim 1 , wherein the fiber application and/or compaction roller has a non-rotatable inner bearing segment, which is to be mounted at a motion apparatus for relatively moving across the work surface, and a tubular body or roller body, rotatable relative to the bearing segment and surrounding the bearing segment at the transparent circumferential surface area, wherein the activation device is situated at an inner bearing section.

3. The fiber application tool according to claim 1 , wherein the activation device is configured such that the activation radiation is guided through the transparent circumferential surface area into a redirection area, in which fiber is redirected at the roller and is located in rotational direction in front of the contact area, where the fiber is applied upon contact onto the work surface.

4. The fiber application tool according to claim 1 , wherein the activation device has at least one of the following:
an internal light source in the fiber application tool for delivering the activation radiation,
an internal LED in the fiber application tool for delivering the activation radiation, and
an internal guiding device for delivering activation radiation from an external radiation source into an interior of the fiber application tool, and
wherein the activation device further comprises a focusing device for focusing the activation radiation onto the fiber contact surface or in close distance near the fiber contact surface.

5. The fiber application tool according to claim 4 , wherein the focusing device has at least one focusing lens configured to directly irradiate the fibers contacting the fiber contact surface through the transparent fiber contact surface area.

6. The fiber application tool according to claim 4 , wherein the guiding device has a light conducting device, a glass fiber and/or a light path having a deflection mirror.

7. The fiber application tool according to claim 4 , wherein distances between the (i) light source and/or the LED and/or the guiding device, and (ii) the at least one focusing lens are chosen such that the focus point is located directly on the fiber contact surface.

8. The fiber application tool according to claim 4 , wherein at least one of the internal light source, LED, focusing device and an outlet of the light conducting device are situated in at least one of the fiber application and/or compaction roller.

9. An automatic fiber placement device for the automatic placement of fibers onto a work surface, comprising:
a fiber delivery device for delivering fibers;
a fiber application tool according to claim 1 ;
a cutting device for cutting the fibers to a desired length;
and a motion apparatus for moving the fiber application tool relative to the work surface to apply and press the fibers delivered by the fiber delivery device onto the work surface.

Assignees

• Airbus Defence & Space Gmbh

Inventors

• Engel Franz

Classifications

• B29C70/38

  Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns {(application heads for tyres B29D30/28)} · CPC title

• B29C35/0888

  using transparant moulds · CPC title

• B29C35/0805 Primary

  using electromagnetic radiation · CPC title