Method for producing a shaped bar from fiber composite material

Patent metadata

Field	Value
Publication number	US-11045984-B2
Application number	US-201816028766-A
Country	US
Kind code	B2
Filing date	Jul 6, 2018
Priority date	Feb 17, 2016
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A method for producing a shaped bar from fiber composite material uses a bonding tool which has a heating-up portion. The method includes the steps that a number of fiber tapes provided with a thermoplastic matrix are fed in parallel to the bonding tool, are brought together and heated and bonded in the heating-up portion to form a fiber cord. The fiber cord is subsequently placed by the bonding tool directly into a processing tool or a depositing device designed to place the fiber cord into the processing tool.

First claim

What is claimed is:

1. A method for producing a shaped bar from fiber composite material by using a bonding tool, which has a heating-up section, the method comprising the steps of:
feeding a number of fiber tapes provided with a thermoplastic matrix in parallel to the bonding tool;
bringing the fed fiber tapes together and heating and bonding them in the heating-up section of the bonding tool to form a fiber cord;
subsequently depositing the formed fiber cord, by the bonding tool, directly into a processing tool or into a depositing device that then places the formed fiber cord into the processing tool, wherein the processing tool is a forming tool; and
forming the formed fiber cord into a three-dimensional shape by the forming tool,
wherein the bonding tool is formed by a multi-axis industrial robot, wherein a drive for feeding and conveying the fiber tapes, a device for bringing together and bundling the fiber tapes, a heating line for heating the fiber tapes in the heating-up section, and a discharge point for depositing the formed fiber cord are integrated in a head of the industrial robot, wherein tape reels carrying the fiber tapes are included in the multi-axis industrial robot, and wherein the formed fiber cord can be deposited in any desired shape and in any desired position by the multi-axis industrial robot.

2. The method as claimed in claim 1 , wherein
a number of fiber cords are deposited successively on top of each other by the industrial robot.

3. The method as claimed in claim 1 , wherein
the number of fed fiber tapes determines a cross section of the fiber cord.

4. The method as claimed in claim 1 , wherein
following the forming by the forming tool the fiber cord is then extrusion-coated immediately with plastic.

5. The method as claimed in claim 1 , wherein
the fiber cords are deposited in a lattice structure.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Hogger Thomas
• Konrad Oleg

Classifications

• B29C70/386 Primary

  Automated tape laying [ATL] · CPC title

• B29C45/14221

  by tools, e.g. cutting means · CPC title

• B29C45/14786

  Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material · CPC title

• B29C45/14008 Primary

  Inserting articles into the mould (B29C45/14827 takes precedence) · CPC title

• B29K2905/02

  Aluminium · CPC title