SPUN EXTRUSION SIDE ENTRY MUFFLER

摘要

By using a spun extrusion method to form a side entry exhaust inlet (30) , a muffler (10) can be completely stuffed and end caps (18, 22) can be spun onto opposing ends (20, 24) of the muffler (10) on a high speed production line without interruptions. The side entry exhaust inlet (30) is formed within a muffler shell (12) at a position between the opposing ends (20, 24) . A spinning tool (56) engages an internal peripheral area (66) of the side entry exhaust inlet (30) to form a spun extruded surface that extends outwardly from the muffler shell (12) .