Apparatus for covering a textile dye tube
US6234228A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | May 26, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for securing a sheet of filter material about the circumference of a dye tube. The apparatus includes a mandrel support table having a tube loading station, a sheet wrapping station, a sealing station, and a discharge station; hollow, air permeable mandrels supported on the table; a table drive to sequentially index the mandrels to each of the stations; a vacuum chamber extending from the tube wrapping station to the sealing station to draw a vacuum inside each mandrel at and between the wrapping and sealing stations; a tube feeder for feeding tubes onto mandrels at the tube loading station; a sheet feeder for feeding sheets of filter material into engagement with tubes at the wrapping station; a mandrel drive for rotating each mandrel at the wrapping station to wrap the sheet around the circumference of a tube supported on the mandrel; and a sealer at the sealing station for sealing the sheet to itself to cover the tube. In one embodiment the sealer is a heated roller which wraps and seals the sheet around the tube simultaneously in a single operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.