Preforming station of an IS glass machine

摘要

The preform molding station comprises a station box (5) that is provided with cooling air by a cooling device of the glass machine, two holding arms (2) that are movable on the preform station parallely guided to each other, two or three preform molding halves that are associated to the holding arms and are movable by sequentially moving the holding arms simultaneously in its closing position and/or in its opening position, where each holding arm is connected by a movable telescope tube arrangement (21, 22). The preform molding station comprises a station box (5) that is provided with cooling air by a cooling device of the glass machine, two holding arms (2) that are movable on the preform station parallely guided to each other, two or three preform molding halves that are associated to the holding arms and are movable by sequentially moving the holding arms simultaneously in its closing position and/or in its opening position, where each holding arm is connected by a movable telescope tube arrangement (21, 22) that is linked at the holding arms on one side and at station box on another side, to the station box of the preform molding station and to the cooling device so that each holding arm is provided during the parallel guiding sequential movement also during the parallel guiding movement and in welding position and in opening position with cooling air. Two or three telescope tubes corresponding to preform molding halves held by the holding arm belong to telescope tube arrangement, where the telescope tube is associated to the prefrom halves. The telescope tube of the telescope tube arrangement is associated to two or three air regulating valves (7) that are separately regulatable by a control grid (13, 14, 15). The air regulating valve is formed as proportional valve. The telescope tube arrangement is connected to the station box over a station box insert separated by the station box. The telescope tube arrangement is connected to the preform holding arms over the preform mold holding arm insert separated by the preform holding arms. The preform mold holding arm insert comprises two or three cooling air passages corresponding to preform halves. The station box insert comprises cooling air passages corresponding to the telescope tubes. The preform holding arm insert is connected to the telescope tube on one side and two preform halves are connected to the holding arms on another side. Control grids associated to the air control valve is formed as piston/cylinder arrangement chargeable with compressed air. In the preform holding arms, a cooling air channel is formed, which is connected to the cooling passage at preform holding arm side and branches off from the mouth form of the mouth cool channels associated to the preform halves.