| 摘要 |
A nozzle for an injection-molding machine has an elongated body centered on an axis and formed with an axially and longitudinally throughgoing passage, a threaded rear end, an outer wall, and a front end formed with a step having an axially forwardly directed annular face and a radially outwardly directed annular side surface set in from the outer wall. A removable nozzle element is set in the passage at the front end and an electrical heating element is provided on the outer wall. A protective sleeve coaxial with the body surrounds and encloses the body and heating element and has a front end at the body front end. An end ring set on the step has an inner periphery juxtaposed with the annular surface and an outer periphery juxtaposed with the sleeve front end. Respective inner and outer annular weld joints between the inner periphery and the annular surface and between the outer periphery and the sleeve front end secure the end ring in place.
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