Device for measuring elevations on the surface of a rotary body and system
US11712886B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2021 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Oct 22, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/2433
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device for measuring elevations on a surface of a rotary body provided as a cylinder, sleeve, or plate for a graphic industry machine, for instance a flexographic printing plate, includes a first motor rotating the rotary body about an axis of rotation and a measuring device including at least one radiation source, at least one line scan camera, and a computer taking contact-free measurements and combining individual images of the line scan camera to form a joint image. The measuring device preferably includes a reference object such as a wire tautened in an axially parallel direction, a second motor and, if required, a further second motor adjusting the measuring device and/or reference object perpendicular to the axis of rotation. The device provides fast high-precision measurements of elevations such as flexographic printing dots. A system includes the measuring device and a flexographic printing press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.