摘要:
A method of making a glass container comprising providing a mold defining an article having a base at a bottom of the mold cavity where the mold cavity comprises an undercut portion that defines a recess in the mold cavity; introducing molten glass to the mold; cooling the glass to cause the glass to shrink a sufficient amount that the protuberance recedes from the recess; and removing the container from the mold in a linear direction.
摘要:
The invention relates to an installation and a method for producing glass stoppers which are provided with a head portion and are used for sealing wine bottles and sparkling wine bottles. The installation comprises a mold for producing glass stoppers, a feeder system for supplying the mold with molten glass, a multistation press, and a removing and handling system for the finished glass stoppers. The mold is formed by a base that comprises a recess corresponding to a first partial length of the stopper, a central part consisting of two partial molding elements which can be displaced relative to each other as well as perpendicular to the longitudinal axis of the mold, can be coupled in a self-centering manner, and define a hollow space that corresponds to a second partial length of the stopper and to at least one main area of the head portion when the partial molding elements are coupled and rest against the base, and a top part which seals the hollow space of the head portion and is provided with a central male die that can be displaced in an axial direction relative to the top part so as to embody a recess in the head portion of the stopper, the recess compensating tolerances.
摘要:
A mold-press forming apparatus for applying a molding pressure to a mold containing a forming material to perform press forming includes a loading chamber (that is, an airtight chamber) P1 kept airtight. The loading chamber P1 is connected to a pressure reducing member which includes evacuating members 14 and 13 arranged in an evacuating path 7 connected to the loading chamber P1 for evacuating a gas in the loading chamber P1, and a plurality of valves 11 and 12 arranged in the evacuating path 7 in parallel to each other. When the loading chamber P1 is evacuated, the pressure reducing member changes a pressure reducing rate in the course of pressure reduction.
摘要:
A manufacturing apparatus of a glass product, comprising: a plurality of lower molds; a nozzle for allowing a molten glass droplet to drop therefrom; and a shifting unit for successively shifting any one of lower molds, selected among the lower molds, to a dropping position at which the molten glass droplet drops from the nozzle in synchronized timing with dropping of the molten glass droplet, which can efficiently press-mold molten glass droplets that are allowed to drop from a nozzle of a melting tank; and a manufacturing method applied to the apparatus.
摘要:
An apparatus for continuously forming a glass-ceramic which melts raw materials and forms melted glass to a predetermined shape without cutting the melted glass and thereafter continuously crystallizes the formed glass to the glass-ceramic is provided. The apparatus includes a melting device for melting raw materials, a flow tube for conveying the melted glass, a flow quantity control device connected to the flow tube for controlling the flow quantity of the melted glass, a pressing device for pressing the melted glass from the flow tube into a predetermined form, a glass preform checking device for measuring the weight or volume of the glass preform and feeding back a difference signal corresponding to a difference between the measured value of the weight or volume and a reference value to the flow quantity control device, the flow quantity control device controlling the quantity of the melted glass flowing through the flow tube in response to the difference signal to reduce the difference between the measured value and the reference value, and a crystallizing device for crystallizing the glass preform. The flow tube has an inner diameter which becomes smaller toward a melted glass outlet.
摘要:
An adjusting mechanism is disclosed for the press head of a glassware forming machine of the rotating table type having a plurality of forming units circumferentially spaced for rotation about the axis of the machine. Adjustment is effected by rotating a parallel adjusting rod, which is engaged to a threaded rod. Rotation varies the pressure of the plunger by changing the position of a pinion on the threaded rod, through spring compression or pinion gear rotation, to which the stop lever on the plunger steam will contact. Each forming unit is capable of producing at least two glassware articles per machine cycle. A remote ram spring adjustment means provides operator control of ram spring pressure for each plunger at an accessable height and location.
摘要:
In a turret press for moulding glass, a turntable is equipped with a plurality of equally circumferentially spaced mould-receiving stations which move past stationary operating stations comprising at least one glass charging station, at least one glass pressing station and at least one product withdrawing station. The turntable is driven by a Maltese cross mechanism connected to a continuously running motor by a clutch and brake device. Scanners provided for uncoupling and braking the Maltese cross mechanism are disposed at each said operating station to co-operate with actuators of the mould-receiving stations on the turntable. Any one actuator is operative to co-operate with the scanners only when a mould is present at the respective mould-receiving station.
摘要:
Stemmed glassware is produced by a method and apparatus in which the stem is formed separately and is subsequently joined to the cup at the final phase of the blowing operation of the cup glass. In the apparatus a first rotatable platen having cup molds is provided for blowing of the cups and a second rotatable platen having stem molds is provided for forming the stems. A drop of glass for producing the stems is dropped through a very short distance of about 20 to 40 mm. to prevent excessive cooling of the glass drop and to assist in centering the glass drop in longitudinally divided stem molds. A ring centers the mold halves of the stem molds and a surface on the ring molds a part of the stem base. The second platen rotates the stem molds through a pressing station at which the glass drop is pressed to form the stem to a transfer station at which a transfer means transfers the finished stems from the second rotatable platen and attaches the stems to the cups on the first rotatable platen.
摘要:
THIS APPLICATION DISCLOSES A METHOD FOR PRESS-MOLDING GLASS ARTICLES, E.G. TELEVISION PICTURE TUBE FACEPLATES OR OTHER GLASS ITEMS OF SIMILAR SHAPE. THE METHOD EMPLOYS INCREMENTALLY INDEXING CONCENTRIC TABLES, THE INNER TABLE BEING A MOLDING TABLE WITH A FIRST NUMBER OF STATIONS THEREON, AND THE OUTER TABLE BEING A COOLING TABLE WITH A SECOND NUMBER OF STATIONS THEREON. AN ARTICLE TO BE PRESS-MOLDED IS ADVANCED WITH THE MOLDING TABLE, IN UNISON WITH A MOVABLE MOLD WHICH IS LOCATED AT ONE OF THE STATIONS THEREOF AND AN ALIGNED RECIPROCATABLE PLUNGER IN MOLDING CONTACT THEREWITH, FOR A NUMBER OF INCREMENTAL STEPS OF THE TABLE WHICH IS PRE-SELECTED TO PROVIDE SUFFICIENT TIME FOR PROPER PRESSING OF THE ARTICLE. AFTER THE PREDETERMINED NUMBER OF INCREMENTAL STEPS, THE PLUNGER IS RETRACTED AND THE MOLD AND ARTICLE THEREIN ARE SHIFTED, IN UNISON, TO A STATION ON THE COOLING TABLE, FOR INCREMENTAL ADVANCEMENT THEREWITH UNITL THE ARTICLE HAS HAD SUFFICIENT TIME, AT THE ROTATIONAL CYCLE TIME OF THE COOLING TABLE, TO COOL TO A TEMPERATURE ADEQUATE FOR REMOVAL FROM THE MOLD. THEREUPON THE ARTICLE IS REMOVED FROM THE MOLD, A FRESH GOB OF GLASS TO BE MOLDED IS ADDED TO THE MOLD, AND THE MOLD IS MOVED BACK TO A STATION ON THE MOLDING TABLE TO BEGIN A REPEAT OF THE CYCLE. IN THE MEANWHILE, THE SAME CYCLE HAS BEEN INITIATED WITH A NUMBER OF OTHER MOLDS. FOR A GIVEN NUMBER OF INNER TABLE STATIONS AND A GIVEN NUMBER OF OUTER TABLE STATIONS, ARTICLES MAY BE MOLDED WITH GREAT FLEXIBILITY TO PRODUCTION RATE, PRESSING TIME AND COOLING TIME BY VARYING THE NUMBER OF MOLDS EMPLOYED, THE RELATIVE LOCATIONS OF THE MOLD TRANSFER POSITIONS, AND THE RELATIVE ROTATIONAL DIRECTIONS OF THE INDEXING MOVEMENTS OF THE MOLDING AND COOLING TABLES.