Opening method and device thereof
US10112793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2014 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Apr 15, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/173
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An opening radial dimension is set as a radial direction permissible dimension K of the metal coil as expressed by the following equation or lower.Wherein: K is a radial direction permissible dimension at the load action point position in mm; Yp is a yield stress of the metal sheet, in kgf/mm2; Z is a section modulus of the metal sheet, in mm3; R=(a metal coil radius r)−½(the plate thickness t of the metal sheet), in mm; E is a Young's modulus of the metal sheet, in kgf/mm2; I is a second moment of area of the metal sheet in mm4; and Θ is an angle in radians about the axis of the metal coil from the load action point to the nearest restraining roll along a rewind direction of the metal coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.