Metal working – Plural diverse manufacturing apparatus including means for... – Binding or covering and cutting
Patent
1996-09-23
1998-02-17
Briggs, William R.
Metal working
Plural diverse manufacturing apparatus including means for...
Binding or covering and cutting
29 33T, 118306, 118DIG10, B23P 1100, B05C 700
Patent
active
057180270
ABSTRACT:
An improvement is accomplished in apparatus for the continuous production of tubing from tubing stock, and like, elongated, closed structures from appropriate stocks. The apparatus includes welding means for continuously welding the tubing stock to form the tubing, with the welding occurring at a welding station. Downstream of the welding station are stations for the further processing of the tubing after welding, which generate conditions adverse to interior coatings. In apparatus as described, the improvement comprises several inventive features. A spray head provides for spraying of coating, and fits within the tubing. An elongated, flexible lance locates the spraying means downstream of the processing stations which generate adverse interior coating conditions, by introduction of the spray head into the tubing interior upstream of the welding station, and after introduction, movement of the spray head into the desired downstream position. The lance extends from the point of introduction to the properly located spraying means through the tubing. A coating supply lumen extends along the lance and supplies coating material under pressure to the spray head. Finally, a cooling jacket extends along the lance from the point of introduction to the spray head, and cools the supplied coating material to protect against high temperature damage. Because of the apparatus as described, environmentally friendly, waterbased paints and coatings may be successfully applied to the tubing interior. As most preferred, the lance, coating supply, and cooling jacket together take the form of three concentric layers of hose, with the coating material supplied through the innermost hose. The middle hose supplies cooling water, and the outer hose accomplishes water return.
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Allied Tube & Conduit Corporation
Briggs William R.
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