Automatic blank-mold sooting device in the glass-making...

C - Chemistry – Metallurgy – 03 – B

Patent

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C03B 40/02 (2006.01) C03B 40/027 (2006.01) C03C 25/02 (1995.01)

Patent

CA 2116039

An automatic blank-mold sooting device for the glass-making industry and a sooting process using the device. The device is adapted to deposit a lubricating/detaching layer, which is made of carbon black obtained from an acetylene cracking process, on substantially all portions of the internal walls of the blank mold, enabling a glass gob to flow freely along the internal walls. The device has plugging means that is adapted to disengage the bottom of the blank mold during the blank mold sooting process. The plugging means has a collar, a ring and a plunger. Counter-blow air forms a parison when the plunger moves down. The plugging means is controlled by an invert that transfers the collar, ring and pre-formed parison from the blank mold to a blow mold, whereby the lubricating/detaching layer is deposited.

ispositif automatique de noircissement à la suie des moules ébaucheurs pour l'industrie de la verrerie et processus de noircissement à la suie utilisant ce dispositif. Le dispositif est conçu pour déposer une couche de lubrification/dégagement, formée de noir de carbone obtenu par un processus de craquage à l'acétylène, sur presque toutes les parois intérieures du moule ébaucheur pour permettre au verre en fusion de s'écouler librement le long des parois. Le dispositif comporte un élément de scellement conçu pour dégager le fond du moule ébaucheur lors du processus de noircissement à la suie. L'élément de scellement est formé d'un collier, d'une bague et d'un piston. L'air de contre-coup forme une paraison lorsque le piston se déplace vers le bas. L'élément de scellement est contrôlé par un inverseur qui transfère le collier, la bague et la paraison préformée du moule ébaucheur à un moule pour soufflage par lequel la couche de lubrification/dégagement est déposée

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