A hot nozzle for lateral spraying

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/27 (2006.01) B29C 45/28 (2006.01)

Patent

CA 2759962

The invention relates to a hot nozzle for the lateral spraying of plastic components, said hot nozzle comprising a preferably multiple-part nozzle body (1, 2, 3) having at least one tip inset (5) respectively comprising at least one tip element (6) provided with one tip section (6b) that projects outwardly over the peripheral surface of the nozzle body in a moulding plate (14). At least the tip sections (6b) of the tip elements (6) are penetrated by shut-off needles (18, 41) that can be moved back and forth by means of a drive between a position wherein they close a feed borehole (23) in the moulding plate (14), and a position wherein they open up said borehole.

La présente invention concerne une buse à canal chaud pour l'injection latérale de pièces en matière plastique, la buse comprenant un corps de buse (1, 2, 3) de préférence en plusieurs parties qui présente une ou plusieurs pièces rapportées pointes (5) qui présentent au moins respectivement un élément pointe (6) comprenant une section de pointe (6b) qui dépasse respectivement vers l'extérieur de la surface périphérique du corps de buse dans une plaque de moulage (14). Selon l'invention, au moins la section de pointe (6b) des éléments pointes (6) est traversée par des aiguilles de fermeture (18, 41) qu'un entraînement peut faire passer d'une position dans laquelle elles referment un orifice d'injection (23) dans la plaque de moulage (14) à une position dans laquelle elles laissent cet orifice ouvert, et inversement.

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