Provided is a display apparatus that is capable of displaying a relationship between sand properties measured as time series. The display apparatus displays (i) a relationship between pieces of measured first sand property data and pieces of measured second sand property data, obtained in a first predetermined period, together with first and second reference ranges set for the first and second sand properties and (ii) a relationship between pieces of measured third sand property data and pieces of measured fourth sand property data, obtained in a second predetermined period, together with third and fourth reference ranges set for the third and fourth sand properties.

A screw extruder which extrudes a kneaded material includes a screw having a helical flight provided on an outer peripheral surface of a shaft portion thereof, and a chamber housing the screw. In the screw extruder, a flight thickening portion is provided at a part which is a tip portion of the flight and is on the reverse side of a rotation direction of the flight.

Provided is a decompression kneader capable of stabilizing a moisture content of resultant kneaded sand. The decompression kneader includes a kneader main body configured to knead casting sand and water, a decompression pump configured to reduce a pressure inside the kneader main body, a condenser configured to condense water vapor sucked by the decompression pump, a tank configured to store water condensed by the condenser, and a supply amount calculation apparatus configured to calculate an amount of water supplied from the tank to the kneader main body. The tank comprises a water gauge and a weighing scale, and the supply amount calculation apparatus estimates an amount of the casting sand contained in the tank based on measured values of the water gauge and the weighing scale and corrects the amount of the water supplied from the tank with reference to the amount of the casting sand.

A dual speed manual stand mixer. The mixer has a bowl with a cover fixed to the bowl. The cover includes a ring selectively mounting to the rim of the bowl, and a turntable mounted for rotation within the ring. Multiple whisks extend downward from the turntable into and within the bowl. Gearing is provided to cause both rotation of the turntable, as well as rotation of each individual whisk. A transmission is also provided to selectively connect a manual crank arm in one of two possible limit positions. The gearing ratios differ between these two position to thus drive the turntable and whisk rotation at two different speeds.

Provided is a foundry sand supply device capable of collecting foundry sand at an arbitrary timing. The foundry sand supply device includes a bucket collecting the foundry sand, a bucket drive unit rotatably supporting the bucket and driving the bucket, and a moving unit moving the bucket drive unit close to and away from the foundry sand, and moving the bucket drive unit between a collecting position to collect the foundry sand and a supply position to supply the foundry sand.

A cosmetics mixing device for homogenizing suspensions of cosmetics includes a housing that defines an interior space. The housing is open-topped, and a block is positioned in the interior space. A plurality of recesses extends into the block from an upper face of the block. Each recess extends from proximate to a first endpoint to proximate to a second endpoint of the block. Each of a plurality of couplers is coupled to the block and is positioned in a respective recess. The coupler is configured to couple to a respective tubular container to retain the respective tubular container within the respective recess. A shaking module that is coupled to the housing and positioned in the interior space is operationally coupled to the block. The shaking module is positioned to shake the block to mix a cosmetic that is positioned in the respective tubular container.

In a casting sand reclamation system and a casting sand reclamation method, an appropriate reclamation process is performed according to the properties of casting sand to improve the reclamation accuracy and the reclamation yield. Capacitance measuring devices 70 and 71 that measure the capacitance of casting sand 1 (recovered sand 1a or reclamation sand 1b) are arranged on an upstream side and a downstream side of a batch-type polishing device 7, and feedback control is performed based on the measurement results of the capacitances by these capacitance measuring devices 70 and 71. A sorting device 10 sorts the recovered sand 1a polished by the polishing device 7 into a sand grain component (reclamation sand) and a fine grain component (containing a binder), and has a capacity N times that of the polishing device 7. A control device 80 performs feedback control based on capacitance RU of the recovered sand 1a measured for each polishing process on an upstream side of the polishing device 7, and an average value of N capacitances RD of the reclamation sand 1b measured for each polishing process on a downstream side of the sorting device 10.

In the disclosed solution sand to be cleaned is thermally cleaned by rotating the sand being cleaned in a large oven (1) by rotating the oven (1). Before cleaning, the sand may be pre-processed by crushing any lumps and cleaning the sand fraction by magnetic separation. Preprocessed sand to be cleaned and heat energy are fed (5) into the rotating oven. The oven (1) is set slightly inclined so that a second end of the oven (1) is lower than a first end. The inclination and rotating speed of the oven (1) as well as the feed amount of sand are adjusted, whereby the advancing speed of the sand may be adjusted, as well as the ratio of the sand being cleaned to the volume of the oven (1) kept as desired. The temperature of the oven (1) is monitored at the coldest area of the oven, which is substantially at the second end of the oven. The temperature of the oven (1) is adjusted by adjusting the amount of heat energy fed in. By means of temperature monitoring and knowing the advancing speed of the sand, it is also possible to determine the average temperature of the sand and adjust it as desired by adjusting the supplied heat energy. Finally, the cleaned sand is let run (12) from the second end of the oven (1).

A liner protects an interior surface of a chute that transfers workable foundry molding mix from a mixer to a machine for molding and hardening. The liner has an upper border portion and body portion. The upper border portion secures the liner to an upper portion of the chute. The body portion has at least one panel of a flexible material and is sized and adapted to line the interior surface of the chute. The liner also has a plurality of apertures through the upper border portion for attaching the upper border portion to the upper portion of the chute. The flexible material of the body portion is a woven fabric with polymeric fibers and, optionally, a polymeric coating.

A method for managing a casting process based on measured properties of molding sand is provided so that casting defects or energy used can be reduced by changing the molding conditions for the mold to be produced or changing the steps after molding. The method for managing a casting process based on the properties of the molding sand includes a step (1) of measuring the properties of the molding sand just before the molding sand is supplied to a molding machine (40) and a step (2) of determining if the measured properties of the molding sand comply with predetermined properties so as to then switch between a step of molding a mold when the measured properties do comply with the predetermined properties and a step of molding a mold when the measured properties do not comply with the predetermined properties.