Narrow profile apparatus for forming tubes from plastic web stock
OwnerGeorge H. Pool, Dan R. Freeinventors
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Abstract
A narrow profile forming collar for forming thermoplastic tubes from a continuous web has a soldered and welded sheet metal construction which provides a compact, rigid forming collar particularly adapted to replace wide profile forming collars. A small unobtrusive mounting bracket is contained fully within the envelope of the forming collar, except for mounting surfaces on the opposite ends which are utilized to support the fill tube and, if needed, an auxiliary web feed roll.
Claims8
A narrow profile forming collar for an apparatus for forming tubes from a continuous web, said collar being of the type having a tubular sheet metal body with an opening in one end defined by a curved edge, and a sheet metal wing with a generally flat central wing surface which lies at an acute angle with respect to the axis of the tubular body and which blends into integral laterally extending curved shoulders, said wing surface and shoulders defining an edge which is soldered to and coincides with the curved edge of the body and over which curved edge the web is drawn through the body, said apparatus comprising:
- a free linear edge on the central surface of the wing opposite the curved edge;
- a flat metal mounting bracket having a linear edge portion welded along its length to the linear edge of said wing, an opposite circular edge portion welded along its length to a portion of the outside surface of said tubular body, and a narrow body portion between said linear and circular edge portions positioning said flat central wing to define an acute angle of about 15.degree..
Dependencies are inferred from the claim text.