Band conveying device with vacuum attraction mechanism
US5273613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1991 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Oct 1, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D30/2607
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A band conveying device with a vacuum attraction mechanism comprises a base frame, a traveling carriage movable on the base frame and a plurality of band holding units arranged in a row and provided on the traveling carriage perpendicularly with respect to a traveling direction thereof. A plurality of vacuum pads for attracting and holding a band with a vacuum are arranged in an annular form and attached to the band holding units. The vacuum pads are divided into the two vacuum systems. Each of at least two vacuum systems is provided with a vacuum pressure switch and an electromagnetic valve for shutting off its vacuum system when its degree of vacuum decreases below a given level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.