Coating apparatus – With cleaning or reconditioning work support or conveyer
Patent
1994-11-23
1996-09-03
Snay, Jeffrey
Coating apparatus
With cleaning or reconditioning work support or conveyer
118422, 118426, B05C 102
Patent
active
055519792
ABSTRACT:
A dipping head dips planar arrays of electronic components, disposed in carriers, into sheets of termination paste that are conveyed to a dipping site by a conveyor having an upper planar surface. The sheets are produced atop the conveyor by a doctoring device. The conveyor can be a belt, preferably an endless belt of stainless steel. A wear plate provides vertical support for the belt at the dipping site in order to maintain the planarity of the sheet of termination paste. Preferably the wear plate is perforated with a vacuum source below to hold the belt snug against the plate. The doctoring device is located before (referenced to the direction of belt travel) the dipping site and can be a reservoir of paste riding atop the belt with the paste selectively metered out by raising or lowering of the blade against the belt. A scraper blade can be located after the dipping site to recover leftover paste and guide it into a device which pumps the paste through a filter and back to the reservoir. A tape of cleaning material rubs against a run of the belt, after the scraper blade but before the doctoring device, to further cleanse the belt.
REFERENCES:
patent: 4698192 (1987-10-01), Kuze et al.
patent: 4888082 (1989-12-01), Fetcenko et al.
patent: 5248340 (1993-09-01), Nakagawa et al.
patent: 5275661 (1994-01-01), Nakagawa et al.
Electro Scientific Industries Inc.
Snay Jeffrey
Tighe Thomas J.
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