Hot wedge welding device
US9415541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2015 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Feb 20, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2007/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hot-wedge welding device for overlap welding plastic webs, comprising a hot wedge, a pressure device for pressing the plastic webs against the hot wedge which comprises a respective pressure unit associated with one of the hot-wedge flat sides, and further comprising two mutually opposing pressure rollers. The hot wedge is pivotably mounted on a bearing shaft by way of a bearing bushing, which extends between the two hot-wedge flat sides parallel to the hot-wedge front edge at a distance therefrom. The hot wedge is mounted to have defined degrees of freedom with respect to the bearing shaft in the longitudinal direction and in the transverse direction of the bearing bushing, which in addition to the rotational movement of the hot wedge about the transverse axis thereof, also allow a tilting movement of the hot wedge about the longitudinal axis thereof and a vertical displacement of the hot wedge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.