Devices for bonding parts to be joined

Patent metadata

Field	Value
Publication number	US-9561617-B2
Application number	US-201615094338-A
Country	US
Kind code	B2
Filing date	Apr 8, 2016
Priority date	Jun 27, 2011
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A device is provided for producing a bonded joint between fiber-reinforced thermoplastic parts to be joined, in which fiber-containing plastic material is mixed into the joining zone while friction stir welding the parts to be joined in the form of a butt joint.

First claim

The invention claimed is:

1. A device, comprising:
a welding tool including a rotatable friction shoulder configured to heat parts to be joined in a joining zone;
a rotatable stirring pin configured to intermix plasticized material, the rotatable stirring pin including a rotatable counter bracket forming a plate-like head section of the rotatable stirring pin, and the rotatable counter bracket configured to support the parts to be joined each on a side facing away from the rotatable friction shoulder; and
a feed device configured to supply fiber-containing plastic material into the joining zone,
wherein the rotatable friction shoulder is further configured to:
heat the fiber-containing plastic material above its melting temperature,
rub the fiber-containing plastic material into the joining zone,
be intermittently lifted relative to the joining zone to superficially discontinuously supply the fiber-containing plastic material to the joining zone between the friction shoulder and the parts to be joined, and
when approaching the joining zone, mix the fiber-containing plastic material with the parts to be joined.

2. The device of claim 1 , wherein the feed device includes an inner channel integrated into the welding tool and leading out of the rotatable friction shoulder on a face thereof.

3. The device of claim 1 , wherein the feed device includes an inner channel integrated into the welding tool and radially extending from the rotatable stirring pin.

4. The device of claim 1 , further comprising a heat source configured to pre-heat the joining zone.

Assignees

• Airbus Operations Gmbh

Inventors

• Goehlich Robert Alexander
• Sander Malte

Classifications

• B23K20/1255

  Tools therefor, e.g. characterised by the shape of the probe · CPC title

• B29C65/72

  by combined operations {or combined techniques}, e.g. welding and stitching · CPC title

• B29C66/30341

  non-integral with the parts to be joined, e.g. making use of extra elements (B29C65/562 takes precedence) · CPC title

• B29C66/0242

  Heating, or preheating, e.g. drying (B29C66/3464 takes precedence) · CPC title

• B29C65/028

  making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined · CPC title