Abstract: A core forming device is equipped with a kneading tank in which raw materials of a core are kneaded, a raw material supply unit that supplies the raw materials to the kneading tank, a mold that accommodates a kneaded material including the raw materials kneaded in the kneading tank and that forms the core, a piston that injects the kneaded material into the mold, a position sensor that detects a position of the piston, and a control unit that controls a supply amount of the raw materials supplied to the kneading tank from the raw material supply unit. The control unit determines the supply amount of the raw materials based on a difference between the position of the piston upon completion of injection and a reference position of the piston.

Abstract: To provide a surface treatment method of removing surface defects of a metallic three-dimensional product manufactured by a three-dimensional modeling method. According to the present invention, there is provided a surface treatment method of removing surface defects of a metallic three-dimensional product W manufactured by a three-dimensional modeling method, the surface treatment method including the steps of preparing the three-dimensional product, and injecting a first injecting material toward a surface of the three-dimensional product to make the first injecting material hit against the surface, wherein the first injecting material is particles having corners, and the level difference between layers of a three-dimensional product surface is removed by the corners.

Abstract: To provide a pressure granulation machine that is not equipped with a mechanism for extruding products, that has a simple structure to reclaim products, and that has a high degree of cleanliness. The pressure granulation machine 1 manufactures molded products 120 by granulating material 110 by compressing it by means of a pair of pressing rolls, which rotate. It comprises a first pressing roll 10 of the pair of the pressing rolls, on the outer surface 16 of which concavities 12 for molding are formed, a second pressing roll 20 of the pair of the pressing rolls that rotates faster than the first pressing roll does, and a first suctioning device 50 that suctions the molded products that have been formed by granulating the material by pressing it in the concavities for molding to rip off the molded products from the concavities for molding.

Abstract: A polishing method includes: a step of preparing a polishing device including a processing member and a suction mechanism configured to generate suction force; a step of setting a workpiece in the processing member; and a step of accelerating abrasive grains fed toward the workpiece to a predetermined speed with an air flow generated by operation of the suction mechanism, and polishing the workpiece by causing the abrasive grains to contact with or collide with the workpiece.

Abstract: First guide pipes are disposed on both sides of blasting areas, and second guide pipes are disposed on both sides of the blasting area. A wire rod W is inserted through the first guide pipes and the second guide pipes, penetrating in a conveying direction of the wire rod W. The diameter of each of first insertion holes of the first guide pipes and second insertion holes of the second guide pipes is gradually reduced toward the downstream side in the conveying direction. The second guide pipe is installed in a state in which the downstream-side end portion in the conveying direction is inserted into the first insertion hole from the inlet side of the first guide pipe.

Abstract: A casting plant to produce a cast product with a high quality and a method for managing data for molding the mold and data on the conditions of the molten metal in the casting plant are provided. The controller (11) for the molding unit issues a serial number for the mold to a mold (M). The controller (31) for the unit for conveying the molds shifts the serial number for the mold in accordance with a movement of the mold. It also gathers data on the mold and links the data for molding the mold with the serial number for the mold. When the molten metal is poured from the ladle into the mold, the controller (71) for the unit for pouring the molten metal sends to the computer (91) for controlling the casting plant the serial number for the ladle that is linked with the data on the conditions of the molten metal and that is linked with the serial number for the mold.

Abstract: A continuous bubble removal method includes: preparing a main container, a basic pressurization container that connects to the main container and holds a basic operating liquid, and a basic movable portion that is displaceably attached to the basic pressurization container; flowing target liquid through the main container, the liquid including a bubble; and iteratively decreasing and increasing a volume of the bubble by iteratively pressurizing and depressurizing the target liquid from a region via the basic operating liquid by displacing, in a reciprocating manner, the basic movable portion the region being surrounded by a basic connecting portion of the basic pressurization container that is closer to the main container than the basic supporting portion, wherein an opening area of the basic supporting portion is larger than an opening area of the basic connecting portion.

Abstract: In an embodiment, provided is a drilling method of Bawling a hole having a desired diameter in a fiber-reinforced plastic workpiece. The method includes disposing a resist layer, in which an opening having a diameter smaller than the desired diameter is formed, on the workpiece and ejecting blasting abrasives to the workpiece through the resist layer to cut a portion, which is exposed from the opening, in the workpiece while cutting a peripheral edge portion of the opening of the resist layer.

Abstract: A wear detection method and system for a linear actuator such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder or the like. A physical amount detection sensor 9 is mounted on a linear actuator in which a push-pull member connected to a rod 2 pushes and pulls a pressure-receiving object while applying a lateral load in a direction different from the linear movement direction. An external force that is generated between a tube and the mounting member when the pressure-receiving object is pushed and pulled is detected by the physical amount detection sensor 9 and compared with standard external force data, which was detected in a state without abnormalities and stored in a computation/storage/determination processing device 10, to computationally determine whether the linear actuator is in a normal state or an abnormal state.

Abstract: A return sand cooling system, including: a sand moisture and temperature measuring instrument measuring the moisture content and temperature of the return sand; a control device determines an appropriate water addition amount, which is an amount of water to be added to the return sand; a water-sprinkling cooling device adds water of the appropriate water addition amount to the return sand and cools the return sand by the latent heat of vaporization of water to obtain the cooled return sand; an air introducing device that introduces air into the water-sprinkling cooling device; and an introduced air temperature and humidity measuring instrument measures the temperature and humidity of introduced air to be introduced into the water-sprinkling cooling device; the control device determining the appropriate water addition amount on the basis of the moisture content and temperature of the return sand, and the temperature and humidity of the introduced air.

Abstract: The present invention is a nozzle assembly having a nozzle main body including an ejection material suction port and an ejection port which ejects the ejection material with the compressed air, and an air nozzle which jets the compressed air into the nozzle main body. The nozzle main body includes a mixing chamber which mixes the ejection material with the compressed air, a first pathway directed from the ejection material suction port toward the mixing chamber, and a second pathway directed from the mixing chamber toward the ejection port. The air nozzle includes a compressed air jet portion and a third pathway directed to the compressed air jet portion, and the third pathway is inserted into the nozzle main body. The compressed air jet portion of the air nozzle is provided with a flow contracting portion having an opening.

Abstract: [Problem] To provide a method and device that automatically detects misalignment during flask mating in an automatic flask mating device for molding flasks for casting. [Solution] In an automatic flask mating device, an external force applied to a cope with a cope molding flask M1 during flask mating is detected by means of a physical quantity detection sensor 60, quantified by a computation/storage/determination processing device 61, and then compared with a numerical value at a normal time for determination to thereby determine whether the flask mating has normally completed and detect flask mating misalignment. A force sensor is preferably used as the physical quantity detection sensor.

Abstract: A flaskless molding machine includes: an upper sand tank storing the mold sand to be supplied to the upper molding space; a first lower sand tank storing the mold sand to be supplied to the lower molding space, and having a first communication port for discharging the stored mold sand; a second lower sand tank having a second communication port capable of communicating with the first communication port of the first lower sand tank, and storing the mold sand supplied from the first lower sand tank and to be supplied to the lower molding space; at least one first guide member extending in a vertical direction, and guiding the upper flask, the lower flask and the second lower sand tank in the vertical direction; and a second guide member extending in the vertical direction, and guiding the first lower sand tank in the vertical direction.

Abstract: A flaskless molding machine includes: an upper flask; a lower flask; an upper sand tank; an upper plate attached to a lower end of the upper sand tank; a first lower sand tank; a second lower sand tank; a lower plate attached to an upper end of the second lower sand tank; a drive unit performing squeezing using the upper plate and the lower plate; an adjustment drive unit moving the first lower sand tank; a first detector detecting a height position of the first lower sand tank; a second detector detecting a height position of the second lower sand tank; and a control unit operating the drive unit and the adjustment drive unit so that the height positions of the first communication port and the second communication port coincide with each other, based on detection results of the first detector and the second detector.

Abstract: A hanging section is installed at an upper side of a cabinet, and an autorotation mechanism rotates the hanging section around an axis of the hanging section in upward/downward directions of a device. In addition, a hanger unit hanging from the hanging section is installed in a cabinet, and a pair of frame sections is parallelly installed in series to match opening directions. Then, projection machines project a shot media toward the hanger unit. In addition, a loading/unloading device installed outside the cabinet is configured such that arm constituting a part thereof can be inserted into an opening section of the frame section of the hanger unit, and a tray on which a workpiece is placed can be conveyed. The loading/unloading device loads/unloads the tray with respect to the hanger unit by advancing and retracting the arm.

Abstract: A flaskless molding machine includes: an upper flask; a lower flask; a drive unit moving the lower flask; a lower filling frame; an upper plate; a lower plate; an upper flask oil-hydraulic cylinder coupled to the upper flask; a first oil-hydraulic circuit of the upper flask oil-hydraulic cylinder; a lower filling frame oil-hydraulic cylinder coupled to the lower filling frame; a second oil-hydraulic circuit of the lower filling frame oil-hydraulic cylinder; and drive units performing a squeeze process by moving the lower plate in an upward direction, wherein the first oil-hydraulic circuit includes a back pressure circuit applying a first back pressure serving as a resistance against an upward movement of the upper flask toward the upper plate, and the second oil-hydraulic circuit includes a back pressure circuit applying a second back pressure serving as a resistance against a downward movement of the lower filling frame toward the lower plate.

Abstract: A flaskless molding machine comprises: an upper flask; a lower flask; an upper sand tank disposed above the upper flask; an upper plate attached to a lower end of the upper sand tank, with a supply port being formed in the upper plate, and configured to enter and be retracted from the inside of the upper flask; a first lower sand tank having a first communication port; a second lower sand tank disposed below the lower flask having a second communication port capable of communicating with the first communication port; a lower plate attached to an upper end of the second lower sand tank, with a supply port being formed in the lower plate, and configured to enter and be retracted from the inside of the lower flask; a drive unit moving the second lower sand tank; and an adjustment drive unit moving the first lower sand tank.

Abstract: A roll press method according to an embodiment comprises a roll gap measuring step for measuring a roll gap between an outer peripheral surface of the first roll and an outer peripheral surface of the second roll at one or more positions in a width direction of the first roll while rotating the first roll and the second roll and storing the measured roll gap and rotation angles of the first roll and the second roll in association with each other; and a roll press step for adjusting, according to the rotation angles, a position in the facing direction of the first roll by the adjustment mechanism such that the roll gap is kept within a predetermined variation range with respect to a target value and pressurizing the work by using the first roll in which positions are adjusted in accordance with the rotation angle and the second roll.

Abstract: A method and device for producing shots are provided where the yield is improved. In a space (5) for forming molten drops, which space is surrounded by water (1) in a tank (20), by a cover (3) to cover an area surrounding a disc (2) that is located above the water and rotates, and by a tundish (4) that penetrates through the cover, a gas is discharged though an opening (6) that is formed in the cover and the film (9) of the water is formed on the inner surface of the cover. The molten metal (10) flows through the hole (11) in the bottom of the tundish to be supplied onto the rotating disc. The molten drops are formed by centrifugal force from the molten metal that has been supplied to the disc. Then the molten drops are caused to collide with the film of the water on the inner surface of the cover, to be divided into the droplets that are smaller than the molten drops. The droplets are cooled and solidified.