Abstract: The present invention includes: an injection container unit; a lid member; and an ejection air supply section configured to press a foamed mixed material in the injection container unit with compressed air and thereby eject the foamed mixed material through an ejection port, the lid member being provided with a sealing body configured to deform when a fluid is injected and thereby make close contact with the inner circumferential surface of the injection container unit during the pressing.

Abstract: The present invention includes: a connector unit configured to disconnectably connect an injection container unit and a lid member; and a vertically driving mechanism configured to cause the injection container unit and the lid member to move up and down together when the injection container unit and the lid member are connected together and to cause the lid member to move up and down when the injection container unit and the lid member are not connected together.

Abstract: The present invention includes: an injection container unit; a lid member; and an ejection air supply section configured to press a foamed mixed material in the injection container unit with compressed air and thereby eject the foamed mixed material through an ejection port, the lid member being provided with a sealing body configured to deform when a fluid is injected and thereby make close contact with the inner circumferential surface of the injection container unit during the pressing.

Abstract: A cycle is repeatedly carried out, the cycle including: a material feeding step of feeding a material whose amount is larger than an amount that is needed to form a single mold; a mixing step; an ejection step; and a measurement step of measuring, once before or after the ejection step, an amount of foamed mixed sand contained in a mixing tank. The material at least partially is not fed in the material feeding step in the cycle in which the amount of the foamed mixed sand is not less than a first threshold.

Abstract: The present invention includes: a connector unit configured to disconnectably connect an injection container unit and a lid member; and a vertically driving mechanism configured to cause the injection container unit and the lid member to move up and down together when the injection container unit and the lid member are connected together and to cause the lid member to move up and down when the injection container unit and the lid member are not connected together.

Abstract: A flaskless molding machine includes an upper flask, a lower flask capable of clamping a match plate with the upper flask, a filling frame connectable to the lower flask, a first squeeze board movable into and out from the upper flask, a second squeeze board movable into and out from the filling frame, a filling frame cylinder moving the filling frame relative to the second squeeze board, a squeeze cylinder integrally moving the filling frame, the second squeeze board, and the filling frame cylinder, and a control unit configured to control the filling frame cylinder and the squeeze cylinder. A mold height changing unit includes a stopper limiting a stroke length of the filling frame cylinder to a predetermined length.

Abstract: A molding machine which allows a simplification of a sand filling operation, and the prevention of the formation of a bridge and an air channel in the sand tank, so that the sand filling operation of the molding machine is able to be performed steadily. The molding machine of the present invention includes: a sand tank for storing molding sand to be introduced to a molding flask; a pair of upper and lower sand filling nozzles to guide the molding sand in a horizontal direction, where the molding sand is supplied from a pair of upper and lower sand introducing parts which are located at the lower part of the sand tank; and at least one filter part with a plurality of air-injecting apertures on its entire body, which is attached to at least the entire inner surfaces of the pair of sand introducing parts; wherein the molding sand is fluidized by air injected through the air-injecting apertures of the filter part, and introduced to the molding flask through the sand filling nozzles.

Abstract: Disclosed is a molding machine for simultaneously making upper and lower molds with cope and drag flasks, a matchplate, upper and lower squeezing boards, and a lower filling frame. This machine also includes a cylinder for raising and lowering the lower squeezing board, a driving mechanism that includes pneumatic and hydraulic piping systems for driving the cylinder using an air-on-oil system, and a controller for controlling the driving mechanism. The drag flask, the matchplate, the filling frame, and the lower board define a lower molding space, while the matchplate, the upper board, and the cope flask define an upper molding space such that the controller controls the driving mechanism to drive the cylinder at a low pressure. The lower squeezing board is raised to squeeze the molding sand for simultaneously making the two molds such that the controller controls the driving mechanism to drive the cylinder at a high pressure.

Abstract: The present invention is to provide a machine and a method for suctioning and exhausting air from a storage tank for sand in a molding machine that has less on-off valves and prevents sand from adhering to the interior of the valve for exhausting air while the air is being exhausted.

Abstract: A process and machine for simultaneously making an upper and lower flaskless mold, the process including defining a lower molding space by a drag flask that can enter or leave a molding space in which the molds are made, a match plate having patterns on the upper and lower surfaces and mounted on an upper surface of the drag flask, a lower filling frame provided with molding-sand introducing ports and connectable to the lower end of the drag flask to allow the lower filling frame to ascend and descend, and an ascendable and descendable lower squeeze board, and defining an upper molding space by a cope flask provided with molding-sand introducing ports and being mountable on the match plate to allow the cope flask to ascend and descend, and an upper squeeze board that is opposed to and fixedly provided above the match plate; simultaneously introducing molding sand into the upper and lower molding spaces; squeezing the molding sand by raising the lower squeeze board to make the upper mold and a lower mold; draw

Abstract: The present invention provides a flaskless molding machine that can use a matching plate of different thicknesses. The flaskless molding machine has two molding flasks that have a matching plate sandwiched between them, the two molding flasks being positioned in a way such that one of opening ends of the molding flasks is opposed to each other and each of the other opening ends of the molding flasks is engaged with a squeezing board, and a pair of spaces is formed, into which spaces molding sand is filled by air through each of the openings for introducing the molding sand, disposed on a wall of each of the two molding flasks that are opposed to each other, the flaskless molding machine thus constituted being able to mold two molds by squeezing the molding sand with the squeezing boards.

Abstract: The present invention aims to provide a molding machine which allows a simplification of a sand filling operation, and the prevention of the formation of a bridge and an air channel in the sand tank, so that the sand filling operation of the molding machine being able to be performed steadily.

Abstract: The present invention is to provide a machine and a method for suctioning and exhausting air from a storage tank for sand in a molding machine that has less on-off valves and prevents sand from adhering to the interior of the valve for exhausting air while the air is being exhausted.

Abstract: The present invention provides a flaskless molding machine that can use a matching plate of different thicknesses. The flaskless molding machine has two molding flasks that have a matching plate sandwiched between them, the two molding flasks being positioned in a way such that one of opening ends of the molding flasks is opposed to each other and each of the other opening ends of the molding flasks is engaged with a squeezing board, and a pair of spaces is formed, into which spaces molding sand is filled by air through each of the openings for introducing the molding sand, disposed on a wall of each of the two molding flasks that are opposed to each other, the flaskless molding machine thus constituted being able to mold two molds by squeezing the molding sand with the squeezing boards.

Abstract: The present invention provides a flaskless molding machine that can use a matching plate of different thicknesses. The flaskless molding machine has two molding flasks that have a matching plate sandwiched between them, the two molding flasks being positioned in a way such that one of opening ends of the molding flasks is opposed to each other and each of the other opening ends of the molding flasks is engaged with a squeezing board, and a pair of spaces is formed, into which spaces molding sand is filled by air through each of the openings for introducing the molding sand, disposed on a wall of each of the two molding flasks that are opposed to each other, the flaskless molding machine thus constituted being able to mold two molds by squeezing the molding sand with the squeezing boards.

Abstract: Disclosed is a molding machine for simultaneously making upper and lower molds with cope and drag flasks, a matchplate, upper and lower squeezing boards, and a lower filling frame. This machine also includes a cylinder for raising and lowering the lower squeezing board, a driving mechanism that includes pneumatic and hydraulic piping systems for driving the cylinder using an air-on-oil system, and a controller for controlling the driving mechanism. The drag flask, the matchplate, the filling frame, and the lower board define a lower molding space, while the matchplate, the upper board, and the cope flask define an upper molding space such that the controller controls the driving mechanism to drive the cylinder at a low pressure. The lower squeezing board is raised to squeeze the molding sand for simultaneously making the two molds such that the controller controls the driving mechanism to drive the cylinder at a high pressure.

Abstract: A molding machine that defines upper and lower mold cavities while cope and drag flasks, having a match plate sandwiched therebetween, are rotated from a horizontal position to a vertical position. An upper squeeze member is insertable into the cope flask. A pressure-applying plane of the upper squeeze member defines an upper mold cavity together with the match plate and the cope flask. A pivoting frame supports the cope and drag flasks, having a match plate sandwiched therebetween, and the upper squeeze member, such that they rotate in unison between a horizontal position to a vertical position. A fixed filling frame abuts the drag flask when the cope and drag flasks are in the vertical position. A lower squeeze member has a pressure-applying plane that is oriented horizontally. The pressure-applying plane of the lower squeeze member defines a lower mold cavity together with the match plate, the drag flask, and the filling frame.

Abstract: A molding process and a flaskless molding machine for simultaneously making an upper flaskless mold and a lower flaskless mold are provided such that the bottom surfaces of the molds can be in a stable and horizontal position, the stripping of the flasks can be reliably carried out, and the configuration of the molding machine can be simplified.

Abstract: The present invention provides a flaskless molding machine that can use a matching plate of different thicknesses. The flaskless molding machine has two molding flasks that have a matching plate sandwiched between them, the two molding flasks being positioned in a way such that one of opening ends of the molding flasks is opposed to each other and each of the other opening ends of the molding flasks is engaged with a squeezing board, and a pair of spaces is formed, into which spaces molding sand is filled by air through each of the openings for introducing the molding sand, disposed on a wall of each of the two molding flasks that are opposed to each other, the flaskless molding machine thus constituted being able to mold two molds by squeezing the molding sand with the squeezing boards.

Abstract: A flaskless molding method, wherein a match plate (5) is held between an upper flask (2) and a lower flask (3) and squeeze plates (6) and (7) are inserted into the openings of the upper flask (2) and the lower flask (3) to form an upper manufacturing space and a lower manufacturing space with initial volumes. A foundry sand is filled in the upper and lower manufacturing spaces with the initial volumes through the supply ports of the flask (2) and (3) (first filling). Next, the squeeze plates (6) and (7) are retreated to expand the upper and lower manufacturing spaces more than the initial volumes. The foundry sand is filled again in the expanded upper and lower manufacturing spaces through the supply ports (second filling). After the second filling is completed, the squeeze plates (6) and (7) are advanced to compress the foundry sand in the upper and lower manufacturing spaces so as to manufacture the upper and the lower flasks stacked on each other.