Nozzle clogging detection device and method
US6393336B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Feb 22, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L27/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There are provided a nozzle clogging detection device for an electronic component-mounting apparatus, which has a simple construction and is capable of accurately detecting clogging of a vacuum nozzle and erroneous mounting of a vacuum nozzle different in diameter, and a nozzle clogging detection method therefor. A flow meter is arranged across a vacuum passage communicating between a vacuum pump and the nozzle hole of the vacuum nozzle, for measuring an actual flow rate of air drawn in through the nozzle hole. Clogging of the nozzle hole and erroneous mounting of the vacuum nozzle is detected by comparing the actual flow rate measured by the flow meter with a design flow rate of air to be drawn through the nozzle hole, the design flow rate of air being stored in advance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.