Workpiece conveying system, conveyed workpiece number detector, and control method for the workpiece conveying system
US11554492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2020 |
| Grant date | Jan 17, 2023 |
| Priority date | — |
| Expiry date | May 21, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G59/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Provided is a workpiece conveying system configured to convey a sheet-like workpiece to a downstream step, including: a workpiece conveyor configured to lift through attraction holding, by a workpiece holding unit, an uppermost workpiece W of a stack, and convey the uppermost workpiece W of the stack to the downstream step one by one; and a conveyed workpiece number detector configured to detect the number of workpieces W held by the workpiece holding unit at a detection timing, at which the workpiece W held and raised by the workpiece holding unit in accordance with a normal workpiece conveying operation performed by the workpiece conveyor reaches an upper limit position of raising the workpiece W, and at which a moving speed component of the workpiece W in a raising direction is 0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.