Method and a device for the welding of two parts to be joined made of thermoplastic synthetic materials along a weld seam by means of laser
US10300664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2015 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Jan 8, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2701/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system for welding two parts to be joined made of thermoplastic synthetic materials along a weld seam by a laser operating with a laser beam having a beam direction within an operating field by a control method with control data corresponding to the weld-seam course to be produced, including a beam dimension in the region around its focus causing the welding, which is smaller in the joint plane than the target width of the weld seam to be produced, and is dependent upon the angle of incidence of the laser beam on the joint plane and/or upon the position of the focus relative to the joint plane, is displaced in a first movement component in a principal forward-feed direction along the track of the weld-seam to be produced, in a second, oscillating movement component superimposed over the former to cover the weld-seam width transversely to the principal forward-feed direction with an oscillation amplitude value, and is adjusted with a control method in its oscillation amplitude width in inverse dependence upon the beam dimension in the joint plane such that the width of the beam field covered by the laser beam in the transverse direction relative to the principal forward-feed direc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.