Sintokogio, Ltd.

Singtokogio, Ltd.

Yutaka Hadano

Minoru Hirata

Kimikazu Kaneto

Shuji Takasu

Takayuki Komiyama

Tsuyoshi Sakai

Takuya Nitta

Shuichi Tsuzuki

Shigeaki Yamamoto

Kenji Mizuno

Tsutomu Seki

Shuichi Ide

A flaskless molding equipment for molding a mold that provides support for quickly restoring the stopped equipment to a normal operation. The control circuit monitors the movements of the movable members, the cylinders, and the mechanisms for driving a cylinder, and if the period of the operation of each step of the flaskless molding equipment for molding a mold from the start of the operation to the point where the operation of the flaskless molding equipment for molding a mold reaches the predetermined position exceeds the predetermined period that is set to be abnormal, then the control circuit provides support for restoring the stopped equipment to a normal operation, following the instructions displayed on the screen and following the operator's input by means of an input switch.

Flaskless molding equipment for molding a mold

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.

Molding machine

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.

Molding machine and molding process

The purpose of this invention is to provide a method for making upper and lower molds and an apparatus therefor that can prevent the resulting molds from being warped and match-plates from being broken. The method of this invention comprises the step of holding a match-platebetween cope and drag flasksand, inserting upper and lower squeezing meansandinto the respective openings of the cope and drag flasksand, which openings are opposite to the match-plate, so as to define upper and lower molding spaces, supplying molding sand to the upper and lower molding spaces, and then causing the upper and lower squeezing meansandto move forward to the match-plateso as to squeeze the molding sand and make upper and lower molds, wherein during the step of causing the upper and lower squeezing means to move forward to the match-plate the difference between the squeezing pressures of the upper and lower molding spaces is kept within a predetermined tolerance.

Method for making upper and lower molds and an apparatus therefor

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. The machine for suctioning and exhausting air from the storage tank for the sand in the molding machine comprises a storage tank for sand in the molding machine, a porous body that is provided in the storage tank for sand and that is distant from an inner face of the storage tank for sand, an empty chamber that is formed by an outer face of the porous body and the inner face of the storage tank for sand, a seal that is placed at a rim of a tip of a nozzle of the storage tank for filling sand and that expands when compressed air is supplied inside the seal, a pilot-operated valve for both suctioning and exhausting air that is fluidly connected to the empty chamber, and an on-off valve that is fluidly connected to the pilot-operated valve for both suctioning and exhausting air and connected to an inside of the seal.

Machine and a method for suctioning and exhausting air from a storage tank for sand in a molding machine

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; drawing the upper molds from the match plate; and stripping the upper mold from the cope flask, while stripping the lower filling frame from the lower mold.

Molding process for simultaneously making an upper mold and a lower mold and a flaskless molding machine

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.

Flaskless molding machine

A monitor system for monitoring a molding machine that includes a vertically-movable supporting frame, a pattern carrier on which a pattern is placed, a flask placed on a leveling frame, a sand hopper provided with an optional an air-jet chamber, sand-charging nozzles disposed around a plurality of squeeze feet that is disposed at a lower end of the sand hopper, and a filling frame connected to filling-frame cylinders and surrounding the squeeze feet and the sand-charging nozzles from their outside, the filling frame to be placed on the flask when lowered, comprising at least one sensor connected to the molding machine, for detecting an attribute of the molding sand as required and data analyzing monitor means connected to the sensor, for receiving data that correspond to the attribute detected by the sensor and analyzing the attribute and displaying the results of the analysis.

Method and apparatus for monitoring a molding machine

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 flaskof the compact pattern-plate carrier is installed movably up and down through a plurality of upward oil cylindersthat are expanded/contracted via special oil cylindersoperated by outside cylinders

Molding machine and a pattern carrier used therefor

Method and system for monitoring a molding machine

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.

Die molding machine and pattern carrier

An apparatus for introducing molding sand into a mold space defined by a pattern plate ( ) having a pattern, a flask ( ) placed on the pattern plate ( ) for surrounding the pattern, and a filling frame ( ) placed on the flask ( ) and for compacting the molding sand in the mold space. The apparatus includes a sand hopper ( ) having an inlet pipe ( ) 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 ( ) 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 ( and ) 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 ( ) to fluidize the molding sand. Vertically movable, multi-segmented squeeze feet ( ) are mounted on the lower portion of the sand hopper ( ) at various locations, each of which is adjacent to a side of each nozzle, for compacting the molding sand in the mold space. In the sand hopper ( ), a cutter ( ) is provided to mill sand balls contained in the fluidized molding sand within the sand hopper ( ).

Method and device for filling casting sand

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

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Toyokawa, Japan

Yutaka Hadano