Cutting unit
US10286568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2013 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Apr 25, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/4833
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting unit includes a stationary frame, a cutting drum, and an anvil drum. The cutting drum and the anvil drum are arranged one over the other for cutting web material fed therebetween. The upper drum is centerd on a rotatable arbour and rotatably supported in the stationary frame. The lower drum is rotatable and movable towards and away from the upper drum. A rotatable carrier, movable towards and away from the upper drum, includes at least two contact rollers. The lower drum is shaftless and rests on the contact rollers. At least one contact roller is situated on either side of a central vertical plane of the lower drum for providing support of the lower drum by the contact rollers only. A pressing device moves the carrier and the lower drum towards and against the upper drum for providing cutting pressure between the upper drum and the lower drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.