Detachable nozzle body

Apparatus for injection molding plastic material, which comprises:

• a nozzle assembly through which plastic material flows, said nozzle assembly including a removable nozzle body with a forward end portion, a rearward end portion and a nozzle channel through which said plastic material flows;
• heating means affixed to the nozzle body;
• a nozzle header adjacent the rearward end portion of the nozzle body;
• a mold cavity plate adjacent the forward and portion of the nozzle body and separable from said forward end portion;
• a manifold with a manifold channel, with said manifold channel communicating with said nozzle channel, wherein in operation said manifold slides with respect to said nozzle channel and nozzle header, and said nozzle header maintains a centered position of said nozzle body in said mold cavity plate;
• and
• wherein separation of the mold cavity plate from the forward end portion of the nozzle body exposes the forward end portion and heating means and permits removal of the nozzle body and heating means from the nozzle assembly.