Apparatus and method for heating pipes made of thermoplastic material
AssigneeSica S.P.A.
InventorGiorgio TABANELLI
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Abstract
Described is an apparatus for heating end portions of pipes made of thermoplastic material, comprising an internal heating element, designed to be inserted at least partially inside an end portion of a pipe made of thermoplastic material for heating an inner cylindrical surface of the portion, the heating element comprising at least one infra-red ray radiation unit which has an operating zone designed to face at least partially the inner cylindrical surface, the operating zone extending longitudinally along a predetermined direction, parallel to a central axis of the pipe to be heated.
Claims3
-11. (canceled)
A method for uniform heating of end portions of pipes made of thermoplastic material, comprising the following steps:
- preparing at least one external heating element for heating an outer surface of an end portion of a pipe,
- preparing an internal heating element equipped with at least one infra-red ray radiation unit, for heating an inner surface of an end portion of a pipe,
- partially screening the infra-red rays emitted by the radiation unit in an intermediate position using a first screening element having an annular extension about the radiation unit,
- inserting the internal heating element at least partially inside the end portion of the pipe.
Dependencies are inferred from the claim text.