Automated adhesive spray timing control
US5922132A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1997 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Jun 2, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B12/122
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for improving accuracy of application of a fluid to a desired area of an object which is moving transversely to the direction in which the fluid, e.g., an adhesive, is emitted from a nozzle via an electrically actuated valve. Photoelectric or other such detecting means are positioned in known distance from the nozzle to generate a signal in response to presence of fluid at that position. The delay time between detection of the moving object at a predetermined position and generation of the signal to open the valve is varied commensurately with the time period between generation of the valve-opening and fluid-detection signals of the preceding cycle. The variable delay time thus reflects more accurately the actual electrical and mechanical response times of the valve as opposed to an estimated, fixed delay time. A second detector may be spaced a predetermined distance along the path of adhesive flow from the first detector to provide measurement of fluid velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.