Method and a machine for the production of hollow glassware articles

An indexed unidirectional rotary inverting apparatus (UIA) for a glassware forming machine of single or multiple-cavity mounted on an apparatus support frame comprising:

• a driving mechanism (DM) to be unidirectional indexed rotated thereby firstly 180 degree clockwise moving a parison (P) upwardly constricting it, or counterclockwise moving the parison downwardly stretching it, and then an additional 180 degree completing a 360 degree turn;
• a rotary support driving mechanism coupled to a power output coupling (287) of the driving mechanism (DM);
• a first openable horizontal holding arm (260, 261) holding a first transferable and openable neck ring mold (1), removably held by the first openable horizontal holding arm (260, 261), said first transferable and openable neck ring mold (1) initially retained under a blank mold when it is closed to form the parison (P), and
• a second openable horizontal holding arm (260′, 261′) placed stepped, inverted and diametrically opposed to the first openable horizontal holding arm (260, 261), holding a second transferable and openable neck ring mold (2), held by the second openable horizontal holding arm (260′, 261′), said first and second openable horizontal holding arms are mounted on the rotary support driving mechanism, to indexed unidirectional and simultaneously rotate firstly 180 degrees clockwise moving the parison (P) upwardly constricting it, or counterclockwise moving the parison (P) downwardly stretching it, around a horizontal rotary axis, to invert a first formed parison held by the first transferable and openable neck ring mold (1), from a parison forming station (PFS) to an intermediate station (IRS), at an upright orientation, simultaneously placing the second transferable and openable neck ring mold under the blank mold (BM) for another parison forming cycle, and then rotates additional 180 degrees, completing a 360 degree turn, to place again the first openable horizontal holding arm with the first transferable and openable neck ring mold, empty, under the blank mold (BM);
• and
• a neck ring holding and releasing mechanism (NRHM and NRHM′) for uniformly and simultaneously opening and closing the first and second openable open-able holding arms mounted on the rotary carcass (240) placed outside of the horizontal rotary axis, to release the transferable and openable neck ring molds (1, 2) remaining supported by it at an intermediate station to be held by a transference apparatus,
• whereby the first openable horizontal holding arm (260, 261) gripping the first transferable and openable neck ring mold (1) holding a parison (P), at the blank mold is firstly rotated 180 degree clockwise moving the parison upwardly constricting it or counterclockwise moving the parison (P) downwardly stretching it, to place the parison (P) held by the first transferable and openable neck ring mold (1) at the intermediate station (IRS), at a blow mold releasing the transferable and openable neck ring mold (1), while the second pair of openable horizontal holding arms (260′, 261′) with the second transferable and openable neck ring mold (2) is simultaneously placed under a blank mold to form a second parison (P), and then, when the first pair of openable horizontal holding arms (260, 261) receive back the first transferable and openable neck ring mold (1), empty, it is able to turn back to the parison forming station (PFS) by unidirectional rotating them other 180 degree, completing a 360 degree turn, for another parison forming cycle.