B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/937
B29C 57/00 (2006.01)
Patent
CA 1135922
-12- TITLE METHOD AND APPARATUS FOR MAKING BACKOUT STOP FOR CAULKER CARTRIDGE ABSTRACT The inventive method and apparatus make a backout stop for a caulker cartridge having a cylindrical barrel of resin material. The backout stop is formed at the rear end of the barrel as an inwardly oriented hook that has a generally triangular cross-sectional shape. The two exposed sides of the hook are an inclined surface sloping radially inward so a plunger can slide over the backout stop into the rear of the barrel and an abrupt edge extending radially inward to prevent the plunger from backing out of the barrel. The apparatus includes a tool with a socket that fits over the rear end of the barrel and has a resin- forming edge protruding obliquely into the socket to extend along the inclined surface of the hook when the tool is seated on the rear end of the barrel. The barrel and tool are supported on a common axis, are moved into axial engagement, and are rotated relative to each other while pressed together so that the edge plows along the inclined surface and forms the resin material into the hook. The tool can use several edges and preferably rotates through a short enough arc to form the stop as several separated segments around the rear end of the barrel.
338737
Miller Philip L.
Van Manen Dick T.
Kirby Eades Gale Baker
Voplex Corporation
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