Alignable cooling plug for extruder
OwnerManfred A. A. Lupke, Stefan A. Lupkeinventors
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Abstract
A molding apparatus for the manufacture of pipe advantageously uses a cooling plug that is adjustably-secured to the extrusion head to compensate for misalignment of the extrusion head relative to recirculating mold blocks. This provides a simplified adjustment for adjusting the molding apparatus to correct for wall thickness variations in the molded pipe. This apparatus can be used in combination with existing alignment systems.
Claims16
A molding apparatus for forming pipe, comprising an extruder, an extrusion head having a die outlet at a downstream end of the extrusion head, a cooling plug and moving mold blocks defining an exterior surface of the pipe;
- said cooling plug being adjustably secured to said downstream end of said extrusion head by an adjustment mechanism for shifting of a centerline of said cooling plug relative to said downstream end of said extrusion head;
- said adjusting mechanism being operative during molding of the pipe to adjust alignment of said cooling plug with said mold blocks independently of the position of said extrusion head and said die outlet.
Dependencies are inferred from the claim text.