Needling machine and associated feed control method
US5909883A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1997 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Aug 11, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H18/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A needling machine for the fabrication of non woven products includes apparatus for needling a lap passing between two perforated steel plates, and introducing mechanism for introducing the fiber lap between the two plates, an extractor for extracting the lap downstream of the needling apparatus, a drive source for driving the needling apparatus with a periodical-striking motion, and a processing and control device connected to the needling drive source. The needling machine further includes an electromechanical speed control for driving at a variable speed the extractor, controlled by the processing and control device to provide the extraction means with an extraction speed modulated to the striking frequency at about an average extraction speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.