Glassware forming machine of the individual section (is) type

C - Chemistry – Metallurgy – 03 – B

Patent

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Details

C03B 9/16 (2006.01) C03B 9/193 (2006.01) C03B 9/41 (2006.01) C03B 9/447 (2006.01)

Patent

CA 2264133

In a glassware forming machine of the individual section type a servo-invert device is made of a support arm of the parison, of a toothed wheel (33) and of a rack (32); in addition an electric motor particularly a brushless motor (14) is actuating the reciprocating movement of the rack (32) by means of a ball circulating screw shaft (26) and of a lead nut (28). The brushless motor is provided by lower airtight means (18, 29) and by upper airtight means (36, 37) of an internal ambient (24) of the motor in such a way as to the lower airtight means ensure that the ball circulating screw shaft is in a lubricating oil bath, whereas the upper airtight means ensure that the screw shaft and the lead nut as well as the lubricant oil are protected from polluting substances, which are dragged by the cooling air, said air being circulating in an external ambient, where each individual section is operating.

L'invention concerne une machine de façonnage d'articles en verre de type à section individuelle, qui comprend un dispositif à servocommande inverse. Ledit dispositif est constitué d'un bras de support d'une paraison, d'une roue (33) dentée et d'une crémaillère (32). En outre, un moteur électrique, en particulier un moteur (14) sans balais, déclenche le mouvement de va-et-vient de la crémaillère (32) au moyen d'un arbre (26) à vis et à roulement à billes et d'un écrou (28) principal. Le moteur sans balais est muni d'éléments (18, 29) inférieurs d'étanchéité à l'air et d'éléments (36, 37) supérieurs d'étanchéité à l'air d'un milieu (24) intérieur du moteur. Lesdits éléments inférieurs d'étanchéité à l'air font en sorte que l'arbre à vis et à roulement à billes se trouve dans un bain d'huile lubrifiante et lesdits éléments supérieurs d'étanchéité à l'air font en sorte que l'arbre à vis, l'écrou principal et l'huile lubrifiante soient protégés des substances polluantes qui sont amenées par l'air de refroidissement, ledit air circulant dans un milieu extérieur. Dans une telle machine, chaque section individuelle fonctionne.

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