Coating apparatus – Projection or spray type – Applying solid particulate material
Patent
1989-10-17
1992-01-07
Wityshyn, Michael
Coating apparatus
Projection or spray type
Applying solid particulate material
10 10P, 118319, 118322, 118324, 118500, 118503, B05B 714, B05B 716, B05B 1302
Patent
active
050780832
ABSTRACT:
A method and apparatus for coating a fastener with head and shank portions is disclosed. The invention includes the steps of and apparatus for transferring the fasteners from a feed mechanism such that the fasteners are positioned for coating. The fasteners are then conveyed through a plurality of operating stations, beginning with a heating station where the shank portions of the fasteners are heated. Subsequently, at a material applying station, a coating material is applied to the heated shank portions. A preferred embodiment of the method and apparatus of the present invention includes using a magnetic holder to carry the fasteners horizontally by their portions, heating the shank portion to a temperature above the melting point of the applied material and applying the material to the heated shank portion to form a coating thereon. The magnetic holders are part of an endless traveling belt that rotates continually. The fastener carriers have teeth that engage a rack to rotate the fasteners. A conveyor provides added air cooling for the coated fasteners, which can continue to be rotated. Also disclosed is a transfer wheel with two sets of notches that is synchronously coupled to the traveling belt for placing and aligning fasteners on the belt for coating.
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DiMaio Anthony
Duffy Richard J.
Sessa Eugene
Nylok Fastener Corporation
Wityshyn Michael
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