Abstract: A press molding apparatus includes upper and lower molding dies each having a molding surface facing each other, and a driving device which moves at least one of the upper and lower molding dies in a vertical direction so that the upper and lower molding dies are opened and closed. The driving device includes a main shaft which supports the at least one of the upper and lower molding dies, an ascending and descending member which, while supporting the main shaft, ascends and descends, a plurality of screw shafts which is located eccentrically from an axis line of the main shaft, and engages a plurality of screws formed in the ascending and descending member in order to move up and down the ascending and descending member, a driver which synchronously rotates each of the screw shafts, and a controller which controls the driver.

Abstract: A molded glass article manufacturing device, having a means of forcefully separating a molded glass article attached to the forming surface of an upper mold or a lower mold, and readily and reliably aligning the axes of the upper mold and lower mold, a molded glass article manufacturing method, and a method of assembling a molded glass article manufacturing device are provided.

Abstract: A cooling apparatus for one or more molds on an IS or RIS machine for the production of hollow-glass articles has a cooling chamber below the or each mold subdivided into upper and lower parts at a horizontal planar point with the upper part being detachable from the lower part to allow replacement. The suction pipe can extend through the upper part and form a unit therewith. A valve plate can engage the intake opening of the chamber from its underside and can be displaced by a piston guided in a cylinder housing on both axial sides of that piston.

Abstract: In an apparatus for molding glass articles, a plurality of processing chambers including a heating chamber, a press chamber and a cooling chamber are arranged in order along a predetermined circular transport path. The processing chambers are surrounded by a case within a furnace body. A rotary table is driven for intermittent rotation about an axis thereof. The transport path extends in concentric relation to the axis of the rotary table. The rotary table extends radially outwardly to a position below the case. A plurality of sample mounts are mounted on the rotary table and are arranged along the transport path in spaced relation to each other. The sample mounts extend into the processing chambers through a slit formed in a bottom wall of the case. A plurality of molds each having accommodated therein a glass preform to be molded are mounted respectively on the sample mounts.

Abstract: A single mold and plunger set is programmed to form a parison within each of a plurality of neck rings which are continuously successively presented along a linear path. The mold, which is positioned below the linear path of said continuously successively presented neck rings, receives a charge of molten glass and accelerates in a direction parallel to said linear path to a speed commensurate with that of the continuously presented neck rings, and upon tracking with a particular neck ring, such mold moves vertically into engagement with a bottom portion thereof. Simultaneously, the plunger, which is positioned above said linear path, accelerates in a direction parallel with the movement of said continuously presented neck rings to a speed commensurate therewith, and upon tracking said particular neck ring moves vertically into engagement with an upper portion thereof so as to press form the charge of molten glass deposited within the mold into a shape determined by the shape of the parison mold and plunger.