	US 12,186,801 B2
	Mold pump
Jon Tipton, Aurora, OH (US); Andrew Horsfall, Solon, OH (US); Jay Fritzke, North East, PA (US); and Richard S. Henderson, Solon, OH (US)
Assigned to Pyrotek, Inc., Spokane, WA (US)
Appl. No. 15/513,694
Filed by PYROTEK, INC., Spokane, WA (US)
PCT Filed Sep. 25, 2015, PCT No. PCT/US2015/052244 § 371(c)(1), (2) Date Mar. 23, 2017, PCT Pub. No. WO2016/049468, PCT Pub. Date Mar. 31, 2016.
Claims priority of provisional application 62/193,166, filed on Jul. 16, 2015.
Claims priority of provisional application 62/076,057, filed on Nov. 6, 2014.
Claims priority of provisional application 62/055,921, filed on Sep. 26, 2014.
Prior Publication US 2017/0246681 A1, Aug. 31, 2017
Int. Cl. B22D 39/04 (2006.01); B22D 13/02 (2006.01); B22D 13/10 (2006.01); B22D 13/12 (2006.01); B22D 17/08 (2006.01); B22D 17/20 (2006.01); B22D 17/30 (2006.01); B22D 17/32 (2006.01); B22D 35/04 (2006.01); F04D 7/06 (2006.01); F04D 15/00 (2006.01)

CPC B22D 39/04 (2013.01) [B22D 13/02 (2013.01); B22D 13/107 (2013.01); B22D 13/12 (2013.01); B22D 17/08 (2013.01); B22D 17/2023 (2013.01); B22D 17/203 (2013.01); B22D 17/30 (2013.01); B22D 17/32 (2013.01); B22D 35/04 (2013.01); F04D 7/065 (2013.01); F04D 15/0066 (2013.01)]

11 Claims

1. A molding machine comprising a cavity to be filled with molten metal comprised of aluminum; a conduit system leading to said cavity and forming a system of interconnected hollow spaces; at least one pressure member comprising a casting piston moveable in at least part of said hollow space system comprising a shot sleeve; wherein a centrifugal pump is in fluid communication with a reservoir of molten metal and the part of said hollow space system receiving the at least one pressure member, said centrifugal pump comprising a base member submerged in the reservoir of molten metal, at least two posts extending between the base member and a motor, a shaft extending between the motor and an impeller disposed in the base member; wherein said molten metal is introduced to said shot sleeve at a bottom side or bottom end; said molding machine further comprising a controller, said controller configured to control the motor associated with the centrifugal pump, said controller receiving data from at least one position, velocity, acceleration, or pressure sensor, said controller using said data to operate the centrifugal pump at a minimum of two different fill speeds during a fill of the shot sleeve; and wherein the conduit system of the molding machine does not include a valve below a surface of the reservoir of molten metal.