Molds Having Separable Parts Patents (Class 164/330)
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Patent number: 6497271Abstract: The invention relates to a pig casting machine comprising at least one endless conveyor belt (2), on which pig casting molds (3) are fixed, for conveying pig casting molds from a casting station (4) to a pig removal station and vice versa, wherein each pig casting mold is filled with molten metal as it passes through the casting station with the mold cavity facing upwards, in addition to a device for cooling the pig casting molds before, during and/or after casting, wherein the pig casting molds are embodied having a thin wall. According to the invention, in order to increase output and to be able to cast heavy metals in such a pig casting machine, the pig casting molds (3, 112, 207) are designed to receive molten metal at a melting temperature above 1,000° C.Type: GrantFiled: April 27, 2001Date of Patent: December 24, 2002Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Peter Heinrich, Volker Hille, Ursula Kallenborn-Weber, Fritz-Peter Pleschiutschnigg, Manfred Albedyhl, Hartmut Hille
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Patent number: 6457511Abstract: An offset conveyor system utilizes a lower conveying section positioned adjacent a pouring station where molten metal is poured into weighted and jacketed sand molds. Molds are transported on carriers along the lower section from a mold loading station to a weight and jacket placement station to the pouring station. After pouring, the carrier with jacketed mold is moved up an incline to an upper conveying section parallel the lower section and may overlap the lower section partially. Molds are transported in an opposite linear direction relative to the lower section to a weight and jacket removal station and to a mold dump station, where the sand mold and casting are removed from the conveyor. The carrier is returned to the lower conveyor section to receive another mold. The weight and jacket removed from the upper section is placed on a mold on the lower section, therefore only a minimum number of weights and jackets are used.Type: GrantFiled: December 4, 2000Date of Patent: October 1, 2002Assignee: Vulcan Engineering Company, Inc.Inventors: Lynn C. Hackman, Larry Wayne Roberts
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Publication number: 20020069999Abstract: An offset conveyor system utilizes a lower conveying section positioned adjacent a pouring station where molten metal is poured into weighted and jacketed sand molds. Molds are transported on carriers along the lower section from a mold loading station to a weight and jacket placement station to the pouring station. After pouring, the carrier with jacketed mold is moved up an incline to an upper conveying section parallel the lower section and may overlap the lower section partially. Molds are transported in an opposite linear direction relative to the lower section to a weight and jacket removal station and to a mold dump station, where the sand mold and casting are removed from the conveyor. The carrier is returned to the lower conveyor section to receive another mold. The weight and jacket removed from the upper section is placed on a mold on the lower section, therefore only a minimum number of weights and jackets are used.Type: ApplicationFiled: December 4, 2000Publication date: June 13, 2002Inventors: Lynn C. Hackman, Larry Wayne Roberts
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Patent number: 6345801Abstract: This invention relates to an improved mould for casting a standard Magnesium ingot. The mould is constructed so as to minimize the surface area of the molten Magnesium which is exposed to the surrounding air. This significantly reduces the reliance on costly or harmful gases typically used in the casting process. The vertical mould which is internally tapered, has an open top and a closure at the bottom thereof. The ingot is easily removed from the mould when said closure is opened. The mould is adapted for use as part of an automated process employing a cyclic conveyance system for efficiently producing Magnesium ingots from recycled scrap Magnesium.Type: GrantFiled: June 16, 1999Date of Patent: February 12, 2002Inventor: Alain Renaud Boulet
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Patent number: 4787598Abstract: The invention relates to an apparatus for the continuous production of pipes with cross-profiled walls from a pipe strand of thermoplastic plastic emerging in still plastic state from an extrusion nozzle.Type: GrantFiled: November 13, 1987Date of Patent: November 29, 1988Assignee: Unicor GmbHInventors: Horst Rahn, Helmut Grull
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Patent number: 4770228Abstract: A metal casting device employs a number of pairs of mold members which can be opened or closed with respect to each other. The mold chamber pairs cooperate, in their closed state, to form a linear mold chamber. In order to compensate for shrinkage as the metal cools, the mold member pairs are movably supported by an endless chain, with the pairs of cooperating mold members being provided with contact faces having the same angle of inclination. Each mold member pair is also equipped with supporting rollers with which the associated mold chamber section can be closed or opened, as required.Type: GrantFiled: December 7, 1987Date of Patent: September 13, 1988Assignee: Fried. Krupp Gesellschaft mit beschrankter HaftungInventors: Gerd Artz, Herbert Berendes, Dieter Figge
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Patent number: 4585049Abstract: There is disclosed an apparatus wherein permanent molds for casting metals and the like, supported by carriers, proceed along a closed track comprising a forward path and a return path, thereby maintaining their original order. The carriers with molds are advanced along the forward path step-by-step with most operations then being performed. At the end of the forward path they are shifted sidewards to the return path where they are driven by a continuous drive toward the end of the return path, to be at this place again shifted sidewards to the start of the forward path. By changing the number of carriers in the return path, the conditions for cooling the molds are altered and thus castings of different size may be produced without changing the fundamental cycle of the apparatus.Type: GrantFiled: October 20, 1982Date of Patent: April 29, 1986Assignee: Mez Mohelnice narodni podnikInventors: Jaroslav Sitta, Karll Kopka, Frantisek Petrik, Kvetoslav Vyjidacek
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Patent number: 4573518Abstract: Castings are produced by sandwiching a central mould part 10 between two outer mould parts 36, 38 during the casting process. The central mould part 10 is then transfered sequentially from between the outer mould parts 36, 38 and subsequently re-located between the outer mould parts in a vacant, relatively cool, and dry condition for the production of a further casting. In one embodiment a plurality of central mould parts are transferred sequentially from the outer mould parts to a removal station 45, a quenching station 50, and a drying station 70, before being returned to the central mould parts.Type: GrantFiled: May 8, 1984Date of Patent: March 4, 1986Assignee: Dobson Park Industries Plc.Inventors: Richard Ward, Kenneth Cooper
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Patent number: 3993119Abstract: An automatic progressively or continuously operative mold assembly for chilling a material which melts in excess of 1700.degree. C and forming quickly a fine crystalline solid material therefrom by depositing said material in a molten state in the relatively thin spaces between a plurality of relatively thick heat sink plates maintained tightly contiguous as they are moved sequentially through and beyond a first mold filling or discharging station, and then moved very rapidly sequentially through a second mold emptying or discharging station in which the relatively thick heat sink plates are maintained spaced apart to discharge therefrom the fine crystalline solid material adhered thereto.Type: GrantFiled: November 8, 1974Date of Patent: November 23, 1976Assignee: Norton CompanyInventor: John J. Scott
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Patent number: 3976120Abstract: In casting molten metal into open recesses in moving molds for forming plate-shaped metal parts, the molds extend between and are supported on individual links of a pair of laterally spaced link chains forming a conveyor having an upper run and a lower run and trained over a pair of spaced rolls. The upper run of the conveyor in which the molten metal is poured and cooled, travels in a rectilinear horizontal path. The links are supported on hinge pins and rollers mounted on the hinge pins ride along guide rails. Each pair of adjacent molds abut at a joint located in a vertical plane which passes through the hinge pin interconnecting the links supporting the mold. Each mold plate has a transversely arranged separating edge defining a spacer between the recesses in adjacent molds. The separating edge can be located at the end of the mold or at a location intermediate its ends.Type: GrantFiled: August 14, 1973Date of Patent: August 24, 1976Assignee: Demag AktiengesellschaftInventor: Stefan Raab