Hot-runner nozzle with temperature sensor

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/17 (2006.01) B29C 45/27 (2006.01) G01K 1/14 (2006.01)

Patent

CA 2670785

A hot-runner nozzle (30) for an injection mould has a material tube (32), in which at least one flow channel (40) for a flowable material has been formed, a capsule (10) which can be placed over the material tube (32), a heating system (16) for the heating of the material tube (32) and a temperature sensor (20) for recording a temperature. In order to permit more precise recording of the temperature of the flowable material conducted in the material tube, the invention provides that the capsule (10) has, in the vicinity of one of its end regions, a passage (24) which extends in essence radially through a wall of the capsule (10) and into which a free end of the temperature sensor (20), or a temperature sensor section (56) arranged in the vicinity of the free end of the temperature sensor (20), has been conducted, when the capsule (10) has been placed over the material tube (32).

Buse à canal chaud (30) pour un outil de moulage par injection, comprenant : un tube de matière (32) dans lequel est formé au moins un canal d'écoulement (40) pour une matière coulante ; une douille (10) qui peut être enfilée sur le tube de matière (32) ; un dispositif de chauffage (16) pour chauffer le tube de matière (32) ; et un capteur de température (20) pour enregistrer une température. Selon l'invention, afin de pouvoir enregistrer plus précisément la température de la matière coulante guidée dans le tube de matière, la douille (10) présente, à proximité d'une de ses régions terminales, une ouverture de passage (24) qui s'étend sensiblement radialement à travers une paroi de la douille (10) et dans laquelle, lorsque la douille (10) est enfilée sur le tube de matière (32), est guidée une extrémité libre du capteur de température (20) ou une partie de capteur de température (56) qui est disposée au voisinage de l'extrémité libre du capteur de température (20).

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