Sintokogio, Ltd.

Koichi Sakaguchi

Minoru Hirata

Katsuhito Sato

Takayuki Komiyama

Tsuyoshi Sakai

Toshihiko Oya

Tokiya Terabe

Tatsumi Fujita

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.

Flaskless molding machine

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.

Flask-less molding machine

Feed chute for molding sand with damper for flask-less molding machine

Inspection door with vent hole for flask-less molding machine

Squeeze plate with molding sand inlet part for flask-less molding machine

The object of the invention is to provide an apparatus for setting a core, a molding machine, and a method for setting a core where the configuration of the apparatus and the machine is simplified and the accuracy of the core-setting is high. The apparatus is one for setting a core in a molding machine that comprises an upper flask, a lower flask, a match plate clamped between the upper flask and the lower flask, and an upper and a lower squeezing member for forming molding spaces by having the upper and lower squeezing members be inserted into the upper and lower flasks, respectively, wherein a core is set in the lower mold in a state that the upper mold, the lower mold, and the match plate are separate from each other, the apparatus comprising: a jig for a core having a means for holding a core and a rotary shaft and being rotatably supported by the rotary shaft wherein the means for holding a core detachably holds the core at the jig; and a carriage for a core for rotatably supporting the rotary shaft of the jig and being transported to and from a position above the lower mold; wherein an actuator for elevating the match plate transported between the upper flask and lower flask elevates the jig for the core and the carriage for the core that are transported to a position above the lower mold, which actuator is attached to the molding machine.

Apparatus for setting a core in a molding machine, a molding machine, and a method for setting a core

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.

Molding machine

These inventions provide a method and an apparatus for setting a core used in a molding apparatus that produces flaskless molds, wherein the core-setting apparatus has a simple structure and the accuracy of the positioning of the core while setting it on the lower mold is improved. The inventions comprise:

Core-setting method and apparatus for a molding apparatus for producing flaskless molds

A core-setting apparatus and a method for setting the core in a lower mold used in a molding apparatus, wherein the core-setting apparatus has a simple structure and can maintain the core in the mold in a highly accurate position. The core-setting apparatus to set a core in the lower mold while the upper and the lower mold and a match plate are separated from each other after molding the upper and lower mold in a cope and drag flask includes a handling tool having a holding device and a rotatable rod, wherein the handling tool is rotatably supported by the rod, a carrier for transferring the handling tool, wherein the carrier supports the rotatable rod and is moved to or from a location above the lower mold, and an actuator for lowering and lifting the cope flask together with the carrier and the handling tool which are located above the drag flask, the actuator being mounted on the main body of the molding apparatus.

Core-setting apparatus used for a molding apparatus and a method for setting a core

The disclosed invention provides a molding machine that defines upper and lower molding spaces while cope and drag flasksand a match plateclamped therebetween are rotated from a horizontal position to a vertical position, and that readily places a core into a lower mold within the drag flask. An upper squeeze memberis insertable into the cope flaskwith its pressure-applying plane being opposed to the upper face of the match plate. The pressure-applying plane defines an upper molding space together with the upper face of the match plateand the cope flask. A pivoting framesupports the cope and drag flasks, a match plateclamped therebetween, and the upper squeeze member, such that they rotate in unison between a horizontal position, in which the pressure-applying plane of the upper squeeze memberis oriented vertically downward, to a vertical position in which the pressure-applying plane is oriented horizontally. A fixed, vertical, filling frame abuts the drag flaskwhen the flasksand the match platethat is clamped therebetween are in the vertical position. A lower squeeze memberhas a pressure-applying plane that is oriented horizontally, and is insertable into the filling frame and the abutting drag flask. The pressure-applying plane of the lower squeeze memberdefines a lower molding space together with the lower face of the match plate, the drag flask, and the filling frame. To place a core into a lower mold within the drag flask, the drag flaskis laterally moved from a position that is immediately beneath the cope flasksuch that an open working space is provided.

A method of controlling the operation of an apparatus for making an upper and a lower mold and the apparatus therefore that prevents a mold from having a wrap or a match plate from being damaged. The apparatus controls the forward movement of an upper and a lower squeeze member such that when each moves forward to the match plate by a squeeze device, the difference in the squeeze forces imparted to the upper squeeze member and the squeeze force imparted to the lower squeeze member, is kept within the predetermined tolerance.

Growing community of inventors

Toyokawa, Japan

Koichi Sakaguchi