Including Valved Mold Gate Patents (Class 164/304)
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Patent number: 10894286Abstract: A high-pressure die casting apparatus including a shot sleeve extending through a first die half to a molding surface, and a plunger received in the shot sleeve is provided. The shot sleeve includes a side wall presenting a fluid passageway and a partial end wall disposed in a fixed position relative to the side wall. The partial end wall defines a wall opening adjacent the molding surface. Fluid is poured into the shot sleeve while the die apparatus is open, and the partial end wall prevents the fluid from flowing out of the shot sleeve. The plunger then presses the material into the mold cavity until only a portion of the material remains in the shot sleeve and blocks the wall opening. After the solidified material is ejected from the apparatus, the portion of material blocking the wall opening prevents lubricant from entering the shot sleeve.Type: GrantFiled: October 25, 2018Date of Patent: January 19, 2021Assignee: Magna International Inc.Inventors: Richard John Wilkes, Owen Michael Zelina, Xiaoping Niu
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Publication number: 20150083357Abstract: A molding apparatus (30) is configured so as to form a molten metal holding space (41a) by dividing the inside of a connecting portion (41) into the molten metal holding space (41a) and a molten metal supply port-side space (41b) by closing an on-off valve (42), and pump up molten metal (5) from a molten metal furnace (50) into the molten metal holding space (41a) of the connecting portion (41) with a pump (40). Then a pressure of the molten metal (5) that has been pumped up into the molten metal holding space (41a) is reduced by a pressure-reducing portion, and the molten metal holding space (41a) inside the connecting portion (41) is communicated with a molten metal supply port (6) of an injection sleeve (2) by opening the on-off valve (42), and the molten metal (5), the pressure of which has been reduced in the molten metal holding space (41a), is supplied into the injection sleeve (2).Type: ApplicationFiled: March 13, 2013Publication date: March 26, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Makoto Kikuchi
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Publication number: 20140345824Abstract: A casting valve configured to supply a melt of a casting device includes a valve housing comprising a melt channel connection as an inlet and a valve outlet as a run-out. A melt channel is configured to be pressurizable via a casting pressure. A valve compartment is configured to receive the melt. The valve compartment is connectable via the melt channel connection with the melt channel. A closing device is configured to modify a cross-sectional surface of the valve outlet. A post-compression piston is configured to post-compress the melt after a completion of a mold filling.Type: ApplicationFiled: May 19, 2014Publication date: November 27, 2014Applicant: SCHULER PRESSEN GMBHInventors: JUERGEN FAHRENBACH, MARTIN GAEBGES, MICHAEL RICHTER, TOBIAS SCHWARZ
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Publication number: 20140311698Abstract: A device for die-casting metal material, including a screw unit for bringing the material into a thixotropic state and a cylinder/piston unit fed by the screw unit for applying pressure to the thixotropic material for the die casting, wherein a thermally controllable valve is arranged between the screw unit and the cylinder/piston unit.Type: ApplicationFiled: November 2, 2012Publication date: October 23, 2014Applicant: Mold-Thix-Consulting Bueltermann GmbHInventor: Bernd Bültermann
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Publication number: 20080311418Abstract: Disclosed is: (i) a metal injection-molding system, (ii) a metal injection-molding system including a combining chamber, (iii) a metal injection-molding system including a first injection mechanism and a second injection mechanism, (iv) a metal injection-molding system including a first injection mechanism being co-operable with a second injection mechanism, (v) a mold of a metal injection-molding system, and (vi) a method of a metal injection-molding system.Type: ApplicationFiled: June 18, 2007Publication date: December 18, 2008Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.Inventor: Frank Czerwinski
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Publication number: 20080176094Abstract: Disclosed is: (i) a metal molding system, (ii) a metal molding system including a combining chamber, (iii) a metal molding system including a first injection-type extruder and a second injection-type extruder, (iv) a metal molding system including a first injection-type extruder being co-operable with a second injection-type extruder, (v) a mold of a metal molding system, and (vi) a method of a metal molding system.Type: ApplicationFiled: January 23, 2007Publication date: July 24, 2008Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.Inventors: Frank CZERWINSKI, Robert DOMODOSSOLA, Giuseppe Edwardo MARICONDA, Derek Kent William SMITH
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Publication number: 20080115907Abstract: A method and apparatus for the casting of metal components is disclosed. The apparatus includes a gooseneck for drawing molten metal from a crucible of hot metal and for forcing the drawn molten metal through the system, a hot runner assembly having a hot runner tip positioned adjacent the mold cavity, and a machine nozzle inserted between the gooseneck and the hot runner assembly. The gooseneck is fitted with a one-way check valve to allow for molten metal to be drawn into the plunger but to stop its passage out of the gooseneck when the metal is forced through the system into the die. A thermal valve is formed within the hot runner tip to provide a metal blockage from the molten metal which prevents the back-flow of molten metal back into the hot runner assembly. Both temperature and flow rate are carefully monitored and controlled.Type: ApplicationFiled: November 16, 2006Publication date: May 22, 2008Applicants: FORD MOTOR COMPANY, FORD GLOBAL TECHNOLOGIES, LLCInventors: Naiyi Li, Ronald Cooper, Jim deVries, Nanda Gopal, Christopher W. Lee, Tom Scholten, Raymond Silva
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Patent number: 5253848Abstract: A device for stopping flow of molten metal through a conduit having a longitudinal central passage. A ceramic seal is placed through a wall of a ceramic pipe for preventing flow of the molten metal through the opening in the wall of the ceramic pipe. A nonmetallic plug is located adjacent the ceramic seal. A lever arm adjacent the plug is used for depressing the ceramic seal and the nonmetallic plug vertically into the ceramic pipe through the longitudinal central passage to prevent flow of molten metal through the ceramic pipe.Type: GrantFiled: June 12, 1992Date of Patent: October 19, 1993Assignee: Inco Alloys International, Inc.Inventors: Robert D. Saunders, William L. Mankins
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Patent number: 5071340Abstract: An injection molding machine and method in which a hot runner has heated nozzles and piston operated nozzles valves, the stems of the nozzle valves and the nozzle bushings have passages connected to the cylinders to carry cooling fluid to the cylinders to actuate the nozzle valves.Type: GrantFiled: March 2, 1990Date of Patent: December 10, 1991Assignee: Dart Industries Inc.Inventor: Vincent S. LaBianca
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Patent number: 4060122Abstract: A low pressure die casting machine for light alloys, of the type in which a charge of molten alloy is received in a charging chamber which is then closed and pressurized to drive the molten alloy into a die chamber formed by a plurality of separable die elements, in which the problems due to head metal and casting sprue in the casting passages and gates is minimized by forming these latter, as well as the charging chamber, as recesses in cooperating faces of two of the die elements, these recesses being so shaped that upon separation of the two die elements the casting sprue and head metal are exposed and can be ejected still attached to the casting without fouling any part of the die casting machine and without leaving any solidified head metal behind which might cause blockage problems unless it were maintained in a molten state.Type: GrantFiled: January 31, 1977Date of Patent: November 29, 1977Assignee: FATA S.p.A.Inventor: Gaetano Di Rosa