Abstract: A molding unit includes: a flask guide member guiding the upper flask and the lower flask; a first squeeze member and a second squeeze member disposed in such a manner as to sandwich upper and lower flasks as the upper flask and the lower flask connected with each other, the first squeeze member and the second squeeze guide member each capable of entering the upper and lower flasks; a squeeze cylinder including a rod having an end part fixed to the first squeeze member and a cylinder body extending and contracting the rod; and a squeeze guide member configured to fix relative positions of the second squeeze guide member and the cylinder body. The flask guide member is a hollow rod member, and the squeeze guide member is a rod member disposed in a movable manner inside the flask guide member.

Abstract: A molding unit includes: a flask guide member guiding the upper flask and the lower flask; a first squeeze member and a second squeeze member disposed in such a manner as to sandwich upper and lower flasks as the upper flask and the lower flask connected with each other, the first squeeze member and the second squeeze member each capable of entering the upper and lower flasks; a squeeze cylinder including a rod having an end part fixed to the first squeeze member and a cylinder body extending and contracting the rod; and a squeeze guide member configured to fix relative positions of the second squeeze member and the cylinder body. The flask guide member is a hollow rod member, and the squeeze guide member is a rod member disposed in a movable manner inside the flask guide member.

Abstract: Equipment and a method, therefore, for molding a mold with a molding flask, having a device for introducing molding sand that introduces molding sand into a molding flask and a filling frame, using compressed air, the molding flask and the filling frame being mounted on a model plate in a superimposed state; a shielding device having a plurality of feet that can enter the filling frame and can be temporarily held at positions that are spaced apart at predetermined distances from a model part of the model plate, which model part faces the plurality of feet. The equipment further includes a squeezing device provided adjacent to the device for introducing molding sand, which squeezing device squeezes the molding sand in the molding flask and the filling frame, and a transfer device for carrying the model plate, the molding flask and the filling frame into and out of both the device for introducing molding sand and the squeezing device.

Abstract: A method of producing a sand mold, comprising: after defining a mold space at least by a pattern plate, a flask, and a squeeze means, and after blow-charging molding sand held in a sand blowing device located above the mold space into the mold space by ejecting a first compressed air near sand ejecting ports of the sand blowing device thereby fluidizing the molding sand near the sand ejecting ports, while supplying a second compressed air to a surface of the molding sand held in the sand blowing device, moving the squeeze means toward the pattern plate, where in the pressure of the first compressed air and the period of time for supplying the first compressed air are adjusted to produce a good sand mold.

Abstract: [Problems] To provide equipment for molding a mold with a molding flask, which can easily be used with a mold molding auxiliary tool such as a sleeve on a model plate and, at the same time, can realize high productivity, is less likely to cause the wear of the model plate, and can mold a mold with a molding flask having uniform strength. [Means to solve problems] The equipment for molding a mold with a molding flask, is characterized in that it comprises: a means for introducing molding sand that introduces molding sand into a molding flask and a filling frame, using compressed air, the molding flask and the filling frame being mounted on a model plate in a superimposed state; the means for introducing molding sand comprising a shielding means having a plurality of feet that can enter the filling frame and can be temporarily held at the position that is spaced apart at the predetermined distance from the model part of the model plate, which model part faces the plurality of feet.

Abstract: A method of producing a sand mold, comprising: after defining a mold space at least by a pattern plate, a flask, and a squeeze means, and after blow-charging molding sand held in a sand blowing device located above the mold space into the mold space by ejecting a first compressed air near sand ejecting ports of the sand blowing device thereby fluidizing the molding sand near the sand ejecting ports, while supplying a second compressed air to a surface of the molding sand held in the sand blowing device, moving the squeeze means toward the pattern plate, where in the pressure of the first compressed air and the period of time for supplying the first compressed air are adjusted to produce a good sand mold.

Abstract: A method of producing a sand mold, comprising: after defining a mold space at least by a pattern plate, a flask, and a squeeze means, and after blow-charging molding sand held in a sand blowing device located above the mold space into the mold space by ejecting a first compressed air near sand ejecting ports of the sand blowing device thereby fluidizing the molding sand near the sand ejecting ports, while supplying a second compressed air to a surface of the molding sand held in the sand blowing device, moving the squeeze means toward the pattern plate, where in the pressure of the first compressed air and the period of time for supplying the first compressed air are adjusted to produce a good sand mold.

Abstract: In a molding machine, foundry sand thrown into a molding space defined by a pattern plate and flask members is compressed in two steps. Namely, in the first step a lower subsidiary flask is stationary while in the second step the flask is movable. The pattern carrier molding machine comprises a molding base, flask-setting cylinders, a lift-support frame, and a segment-squeeze sand hopper. The auxiliary flask 62 of the compact pattern-plate carrier is installed movably up and down through a plurality of upward oil cylinders 63,63 that are expanded/contracted via special oil cylinders 64,65 operated by outside cylinders 68,69.

Abstract: In a molding machine, foundry sand thrown into a molding space defined by a pattern plate and flask members is compressed in two steps. Namely, in the first step a lower subsidiary flask is stationary while in the second step the flask is movable. The pattern carrier molding machine comprises a molding base, flask-setting cylinders, a lift-support frame, and a segment-squeeze sand hopper. The auxiliary flask 62 of the compact pattern-plate carrier is installed movably up and down through a plurality of upward oil cylinders 63,63 that are expanded/contracted via special oil cylinders 64,65 operated by outside cylinders 68,69.

Abstract: In a molding machine, foundry sand thrown into a molding space defined by a pattern plate and flask members is compressed in two steps. Namely, in the first step a lower subsidiary flask is stationary while in the second step the flask is movable. The pattern carrier molding machine comprises a molding base, flask-setting cylinders, a lift-support frame, and a segment-squeeze sand hopper. The auxiliary flask 62 of the compact pattern-plate carrier is installed movably up and down through a plurality of upward oil cylinders 63,63 that are expanded/contracted via special oil cylinders 64,65 operated by outside cylinders 68,69.

Abstract: A pattern carrier for a flask molding machine including a mount on which a pattern plate is mounted and a flask-shaped, molding flask-removing frame adapted to make contact with a lower end of a molding flask of a flask molding machine and moveable up and down around said pattern plate for removing a finished mold.

Abstract: An apparatus for introducing molding sand into a mold space defined by a pattern plate (1) having a pattern, a flask (2) placed on the pattern plate (1) for surrounding the pattern, and a filling frame (3) placed on the flask (2) and for compacting the molding sand in the mold space. The apparatus includes a sand hopper (10) having an inlet pipe (7) for introducing a first airflow at a low pressure (0.05 to 0.18 MPa) and compressed air thereinto from an upper part thereof, and a plurality of separated nozzles (17) at a lower portion thereof for blowing and introducing the molding sand held in the sand hopper into the mold space by the first airflow. First and second chambers (11 and 12) supply a second airflow under a low pressure (0.05 to 0.18 MPa) and compressed air to the molding sand in the sand hopper (10) to fluidize the molding sand.

Abstract: A method for introducing and compacting molding sand S in a mold space defined by a pattern plate (10a), a lower auxiliary frame (16b), a flask (18), a filling frame (20), and multi-segmented squeeze feet (36a). First, the molding sand S is introduced into the mold space. The squeeze feet (36a) are then lowered to apply a first squeeze to the mold sand S in the mold space under a condition wherein at least the lower frame (16a) cannot be lowered. The squeeze feet (36a) are then lowered to apply a second squeeze to the mold sand S in the mold space under a condition wherein the lower frame (16a), the flask (18), and the filling frame (20) can be lowered.

Abstract: A method for compacting molding sand in a mold space defined by a pattern plate, which is fixed in a horizontal position when the molding sand is compacted, a leveling frame disposed for vertical sliding movement around the outer periphery of the pattern plate, a frame member disposed for vertical movement above the leveling frame, and a filling frame disposed for vertical movement above the frame member. The method comprises the steps of feeding molding sand into the mold space, primarily compacting the molding sand in the mold space from above by compacting means while at least the leveling frame is being set so that it cannot be lowered, and secondarily compacting the molding sand in the mold space from above by the compacting means while the leveling frame, the frame member, and the filling frame are set so that these elements can be lowered.

Abstract: A sand hopper (28) is provided at its lower position (40) with a plurality of nozzles (42) and a plurality of squeeze feet (46), the pressure of which is controlled, and which are located adjacent to a side of each squeeze foot. The sand hopper (28) is supported by supporting means (22, 26) such that it can move vertically. A mold space is defined by a pattern plate having a pattern (74a), a flask (4), a filling frame (52), and a sand hopper (28) having a plurality of squeeze feet (46) disposed above the filling frame (52). By discharging molding sand from the nozzles (42), it is introduced into the mold space. The mold sand (S2) in the mold space is compacted by the squeeze feet by lowering the sand hopper toward the mold space. Since the molding machine is so arranged, both introducing molding sand into a mold space and compacting the introduced molding sand are performed at one station (a molding-sand introducing and compacting station).

Abstract: In the molding machine of this invention, foundry sand thrown into a molding space defined by a pattern plate and flask members is compressed in two steps. Namely, in the first step a lower subsidiary flask is stationary while in the second step the flask is movable. The pattern carrier molding machine of this invention comprises a molding base, flask-setting cylinders, a lift-support frame, and a segment-squeeze sand hopper. The auxiliary flask 62 of the compact pattern-plate carrier with an auxiliary flask of this invention is installed movably up and down through a plurality of upward oil cylinders 63,63 that are expanded/contracted via special oil cylinders 64,65 operated by outside cylinders 68,69.

Abstract: A method for introducing and compacting molding sand S in a mold space defined by a pattern plate (10a), a lower auxiliary frame (16b), a flask (18), a filling frame (20), and multi-segmented squeeze feet (36a). First, the molding sand S is introduced into the mold space. The squeeze feet (36a) are then lowered to apply a first squeeze to the mold sand S in the mold space under a condition wherein at least the lower frame (16a) cannot be lowered. The squeeze feet (36a) are then lowered to apply a second squeeze to the mold sand S in the mold space under a condition wherein the lower frame (16a), the flask (18), and the filling frame (20) can be lowered.

Abstract: A molding system to make a sand mold with a frame is provided to receive the lateral loads generated when molding frames are fed out and in by nearby apparatuses and to prevent vibrations generated during a molding operation from being transmitted to nearby apparatuses, so that the area around a factory is prevented from being degraded and so that apparatuses can be easily affixed.

Abstract: An apparatus for introducing molding sand into a mold space defined by a pattern plate (1) having a pattern, a flask (2) placed on the pattern plate (1) for surrounding the pattern, and a filling frame (3) placed on the flask (2) and for compacting the molding sand in the mold space. The apparatus includes a sand hopper (10) having an inlet pipe (7) for introducing a first airflow at a low pressure (0.05 to 0.18 MPa) and compressed air thereinto from an upper part thereof, and a plurality of separated nozzles (17) at a lower portion thereof for blowing and introducing the molding sand held in the sand hopper into the mold space by the first airflow. First and second chambers (11 and 12) supply a second airflow under a low pressure (0.05 to 0.18 MPa) and compressed air to the molding sand in the sand hopper (10) to fluidize the molding sand.

Abstract: A molding system to make a sand mold with a frame is provided to receive the lateral loads generated when molding frames are fed out and in by nearby apparatuses and to prevent vibrations generated during a molding operation from being transmitted to nearby apparatuses, so that the area around a factory is prevented from being degraded and so that apparatuses can be easily affixed.