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JP2010515574A - Match plate molding machine - Google Patents

Match plate molding machine Download PDF

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Publication number
JP2010515574A
JP2010515574A JP2009525815A JP2009525815A JP2010515574A JP 2010515574 A JP2010515574 A JP 2010515574A JP 2009525815 A JP2009525815 A JP 2009525815A JP 2009525815 A JP2009525815 A JP 2009525815A JP 2010515574 A JP2010515574 A JP 2010515574A
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Prior art keywords
match plate
casting frame
molding
casting
frame
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JP5027879B2 (en
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実 平田
貴之 小宮山
英彦 大矢
酒井　　毅
功一 坂口
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Sintokogio Ltd
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Sintokogio Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/02—Compacting by pressing devices only
    • B22C15/08—Compacting by pressing devices only involving pneumatic or hydraulic mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C21/00—Flasks; Accessories therefor
    • B22C21/02—Sectional flasks, i.e. with divided, articulated, or interchangeable side sections

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

上鋳枠と下鋳枠とをマッチプレートから同時に抜型する造型方法を開示する。この方法においては、上鋳枠と下鋳枠とによってマッチプレートを狭持し、上鋳枠及び下鋳枠におけるマッチプレートの反対側に位置する開口にマッチプレートに対向してそれぞれ上スクイズ部材及び下スクイズ部材を挿入して上部造型空間と下部造型空間とをそれぞれ規定する。この規定された上部造型空間と下部造型空間に鋳物砂を充填し、上及び下スクイズ部材をそれぞれマッチプレートへ向けて駆動して、上及び下鋳型造型空間内の鋳物砂をそれぞれスクイズすることにより、上及び下鋳型を同時に造型する。この造型された上及び下鋳型を包含する上及び下鋳枠を同時にマッチプレートから強制的に速度ゼロから押し離す。
【選択図】 図１Disclosed is a molding method in which an upper casting frame and a lower casting frame are simultaneously drawn from a match plate. In this method, the match plate is sandwiched between the upper cast frame and the lower cast frame, and the upper squeeze member and A lower squeeze member is inserted to define an upper molding space and a lower molding space. By filling the specified upper molding space and lower molding space with casting sand, driving the upper and lower squeeze members toward the match plate, respectively, and squeezing the molding sand in the upper and lower mold molding spaces, respectively. The upper and lower molds are formed simultaneously. The upper and lower casting frames including the molded upper and lower molds are simultaneously forced away from the zero speed from the match plate.
[Selection] Figure 1

Description

本発明は造型機及び造型方法に関し、特にマッチプレート造型機及びマッチプレートを用いる造型方法に関する。   The present invention relates to a molding machine and a molding method, and more particularly to a match plate molding machine and a molding method using a match plate.

上鋳型及び下鋳型を同時に造型する従来のマッチプレート造型機の一例がＷＯ２００５／０５８５２８Ａ１号に開示されている。この造型機においては、先ずマッチプレートを上及び下鋳枠によって狭持する。その上及び下鋳枠におけるマッチプレートの反対側に位置する開口に上及び下スクイズ部材をそれぞれ挿入することにより、上及び下造型空間を規定する。次いで、その規定された上及び下造型空間に鋳物砂を充填する。その後、上及び下スクイズ部材をマッチプレートへ向けて駆動して、上及び下造型空間内の鋳物砂をスクイズすることにより、無枠の上及び下鋳型が造型される。次いで、これら上及び下鋳型を包含した上及び下鋳枠をマッチプレートから分離させる。この分離は、上及び下鋳枠をマッチプレートに対して進退動させるシリンダの作動によってなされる。   An example of a conventional match plate molding machine that simultaneously molds an upper mold and a lower mold is disclosed in WO2005 / 058528A1. In this molding machine, first, the match plate is held between the upper and lower casting frames. Upper and lower molding spaces are defined by inserting upper and lower squeeze members into openings located on the opposite sides of the match plate in the upper and lower casting frames, respectively. The defined upper and lower molding spaces are then filled with foundry sand. Thereafter, the upper and lower squeeze members are driven toward the match plate to squeeze the foundry sand in the upper and lower molding spaces, whereby the frameless upper and lower molds are formed. Next, the upper and lower casting frames including these upper and lower molds are separated from the match plate. This separation is performed by the operation of a cylinder that moves the upper and lower casting frames forward and backward relative to the match plate.

このような従来の鋳型造型機における不都合は、上及び下鋳枠のマッチプレートからの分離が、マッチプレートが上又は下鋳型の何れか一方に付着した状態で開始されることである。即ち、マッチプレートが上又は下鋳型の何れか一方に付着した状態では、先ず他方の鋳型（マッチプレートに付着していない鋳型）及びそれを包含した鋳枠を一体的にマッチプレートから分離（即ち抜型）する（第１の抜型）。次いで一方の鋳型（マッチプレートに付着した鋳型）から、この一方の鋳型及びそれを包含した鋳枠を一体的に抜型する（第２の抜型）。第１の抜型は、鋳型（他方の鋳型）の移動速度が速度ゼロから開始されるが、第２の抜型は、それまで動いていたマッチプレートが停止すると共に、マッチプレートに付着している鋳型（一方の鋳型）が動き続けることによりなされる。このため、第２の抜型においては、一方の鋳型がマッチプレートから分離されるときに大きな衝撃を受けて欠陥が発生することがある。   A disadvantage of such a conventional mold making machine is that the separation of the upper and lower casting frames from the match plate is started with the match plate attached to either the upper or lower mold. That is, in a state where the match plate is attached to either the upper or lower mold, the other mold (the mold not attached to the match plate) and the casting frame including the mold are first separated from the match plate (ie, (First die). Next, from the one mold (the mold attached to the match plate), the one mold and the casting frame including the mold are integrally extracted (second mold). In the first cutting, the moving speed of the casting mold (the other casting mold) starts from zero speed, but in the second cutting, the match plate that has moved so far stops and the casting mold is attached to the matching plate. This is done by continuing to move (one mold). For this reason, in the second die cutting, a defect may occur due to a large impact when one mold is separated from the match plate.

従って本発明の目的は、マッチプレートに付着した鋳型及びそれを包含する鋳枠をマッチプレートから抜型する際に、その鋳型に欠陥が発生するのを、未然に防止することができる造型機及び造型方法を提供することにある。   Accordingly, an object of the present invention is to provide a molding machine and a molding machine that can prevent the mold from being defective when the mold attached to the match plate and the casting frame including the mold are removed from the match plate. It is to provide a method.

本発明の一つの態様によれば、造型方法が与えられ、この方法は、上鋳枠と下鋳枠とによってマッチプレートを狭持する段階と、；上鋳枠及び下鋳枠におけるマッチプレートの反対側に位置する開口にマッチプレートに対向してそれぞれ上スクイズ部材及び下スクイズ部材を挿入して上部造型空間と下部造型空間とをそれぞれ規定する段階と、；規定された上部造型空間と下部造型空間に鋳物砂を充填する段階と、；上及び下スクイズ部材をそれぞれマッチプレートへ向けて駆動して、上及び下鋳型造型空間内の鋳物砂をそれぞれスクイズすることにより、上及び下鋳型を同時に造型する段階とを含む鋳型造型方法において、造型された上及び下鋳型を包含する前記上及び下鋳枠を同時にマッチプレートから強制的に速度ゼロから押し離すことを特徴とする。   According to one aspect of the present invention, a molding method is provided, the method comprising sandwiching a match plate by an upper casting frame and a lower casting frame; Inserting an upper squeeze member and a lower squeeze member into the openings located on the opposite sides to face the match plate, respectively, to define an upper molding space and a lower molding space, respectively; defined upper molding space and lower molding space; Filling the space with foundry sand; and simultaneously driving the upper and lower molds by driving the upper and lower squeeze members toward the match plate, respectively, to squeeze the foundry sand in the upper and lower mold forming spaces, respectively. Forming the upper and lower mold frames including the molded upper and lower molds simultaneously from the match plate and forcing them away from zero speed. The features.

好ましくは、上鋳枠が下鋳枠から分離する速度は、マッチプレートが下鋳枠から分離する速度の２倍程度速く、且つ上鋳枠のマッチプレートからの分離速度は、下鋳枠がマッチプレートから分離する速度と同一である。   Preferably, the speed at which the upper casting frame separates from the lower casting frame is about twice as fast as the speed at which the match plate separates from the lower casting frame, and the separation speed of the upper casting frame from the match plate matches the lower casting frame. It is the same speed as separating from the plate.

本発明の一つの態様によれば、マッチプレート造型機が与えられ、この造型機は、上鋳枠と下鋳枠と：これら上鋳枠と下鋳枠とによって狭持されるべきマッチプレートと、；上鋳枠及び下鋳枠におけるマッチプレートの反対側に位置する開口にマッチプレートに対向してそれぞれ挿入される上スクイズ部材及び下スクイズ部材と、；上鋳枠、マッチプレート、及び上スクイズ部材により規定された上造型空間と、下鋳枠、マッチプレート、及び下スクイズ部材により規定された下造型空間とに鋳物砂を充填する手段と、；上及び下造型空間内の鋳物砂をそれぞれスクイズして、上及び下鋳型を同時に造型するように、前記上及び下スクイズ部材をそれぞれマッチプレートへ向けて駆動する駆動手段とを備えるマッチプレート造型機において、上及び下鋳枠に、造型された上及び下鋳型を包含する上及び下鋳枠を同時にマッチプレートから強制的に速度ゼロから押し離す上及び下押離し手段を設けたことを特徴とする。   According to one aspect of the present invention, there is provided a match plate molding machine, which comprises an upper casting frame and a lower casting frame: a match plate to be sandwiched between the upper casting frame and the lower casting frame. An upper squeeze member and a lower squeeze member that are respectively inserted into the openings on the opposite sides of the match plate in the upper and lower cast frames so as to face the match plate; and the upper cast frame, the match plate, and the upper squeeze Means for filling the upper molding space defined by the member and the lower molding space defined by the lower casting frame, the match plate, and the lower squeeze member; and casting sand in the upper and lower molding spaces, respectively. In a match plate molding machine comprising drive means for driving the upper and lower squeeze members toward the match plate so as to squeeze and simultaneously mold the upper and lower molds, And the drag flask, and wherein the upper and the provision of the lower depressed or released by means forcibly pushed off the zero speed on including upper and lower molds are molding and the drag flask at the same time from the match plate.

好ましくは、上押離し手段は加圧油の供給により伸長する油圧シリンダであり、下押離し手段は上押離し手段よりも小さい押出し力を出力する油圧シリンダ、圧縮空気の供給により伸長する空圧シリンダ、又は弾性部材により伸長作動する弾性手段である。   Preferably, the upper push-off means is a hydraulic cylinder that extends by supplying pressurized oil, the lower push-off means is a hydraulic cylinder that outputs a pushing force smaller than the upper push-off means, and a pneumatic pressure that extends by supplying compressed air. It is an elastic means that is extended by a cylinder or an elastic member.

本発明の実施例によれば、上及び下鋳枠はそれぞれ側壁に砂供給孔を有する。   According to an embodiment of the present invention, the upper and lower casting frames each have sand supply holes on the side walls.

好ましくは、下鋳枠は垂直面内で上下回動する回動フレームに固着され、上鋳枠は下鋳枠に対し進退可能にして回動フレームに装着されている。   Preferably, the lower casting frame is fixed to a rotating frame that rotates up and down within a vertical plane, and the upper casting frame is attached to the rotating frame so as to be movable forward and backward with respect to the lower casting frame.

上鋳枠と下鋳枠との間にマッチプレートを挿脱させるように、マッチプレートを搬送する搬送機構を更に備えてもよい。このマッチプレートを下鋳枠に対して進退させる機構を更に備えてもよい。   You may further provide the conveyance mechanism which conveys a match plate so that a match plate may be inserted / removed between an upper casting frame and a lower casting frame. A mechanism for moving the match plate back and forth with respect to the lower casting frame may be further provided.

本発明に係るマッチプレート造型機において、造型される上及び下鋳型は枠付鋳型でもよく、無枠鋳型でもよい。   In the match plate molding machine according to the present invention, the upper and lower molds to be molded may be framed molds or unframed molds.

上述及び他の本発明の目的及び利点は添付図面を参照する以下の詳細な説明から明らかにされる。
図１は本発明に係る造型機を概略的に示す正面図である。 図２は図１の造型機の概略的な左側面図である。 図３は図１及び図２の造型機を駆動させる加圧流体ユニットを概略的に示す図である。 図４は加圧流体ユニットの他の実施形態を概略的に示す図である。 The above and other objects and advantages of the invention will become apparent from the following detailed description when taken in conjunction with the accompanying drawings.
FIG. 1 is a front view schematically showing a molding machine according to the present invention. FIG. 2 is a schematic left side view of the molding machine of FIG. FIG. 3 is a view schematically showing a pressurized fluid unit for driving the molding machine shown in FIGS. FIG. 4 is a view schematically showing another embodiment of the pressurized fluid unit.

本発明を適用したマッチプレート造型機の一実施例について、図１、図２及び図３に基づき詳細に説明する。本発明に係る造型機は図１及び図２に示すように、垂直面内で支持軸１を中心にして上下回動可能に設けられ、実質的に垂直方向へ延伸する回動フレーム２を有する。この回動フレーム２の下端には、側壁に砂吹き込み孔を有する下鋳枠４が支持部材３を介して装着されている。回動フレーム２の左側面には、実質的に垂直方向へ指向すると共に、前後方向に所要の間隔をおいて一対のガイドロッド５が装着されている。このガイドロッド５には、ガイドホルダ６を介してマッチプレート７が垂直方向に摺動自在に装架されている。一対のガイドロッド５におけるガイドホルダ６の真上位置には、側壁に砂吹き込み孔を有する上鋳枠９がガイドホルダ８を介して垂直方向に摺動自在に装架されている。回動フレーム２の左側面には、下向きの垂直シリンダ１０のピストンロッドの先端が装着されている。   An embodiment of a match plate molding machine to which the present invention is applied will be described in detail with reference to FIGS. 1, 2, and 3. FIG. As shown in FIGS. 1 and 2, the molding machine according to the present invention has a rotating frame 2 provided so as to be vertically rotatable around a support shaft 1 in a vertical plane and extending substantially in the vertical direction. . A lower casting frame 4 having a sand blowing hole on the side wall is attached to the lower end of the rotating frame 2 via a support member 3. A pair of guide rods 5 are mounted on the left side surface of the rotating frame 2 in a substantially vertical direction and at a predetermined interval in the front-rear direction. A match plate 7 is mounted on the guide rod 5 via a guide holder 6 so as to be slidable in the vertical direction. An upper casting frame 9 having a sand blowing hole on the side wall is mounted on the pair of guide rods 5 directly above the guide holder 6 through a guide holder 8 so as to be slidable in the vertical direction. The tip of the piston rod of the downward vertical cylinder 10 is mounted on the left side surface of the rotating frame 2.

そして、マッチプレート7は、公知の搬送機構（図示せず）によって上及び下鋳枠９，４の間に対して入出し、回動フレーム２に装着された図示しない上向きのシリンダの伸縮作動により昇降して下鋳枠４に対して進退動する。   The match plate 7 enters and exits between the upper and lower casting frames 9 and 4 by a known conveying mechanism (not shown), and is expanded and contracted by an upward cylinder (not shown) mounted on the rotating frame 2. It moves up and down and moves forward and backward with respect to the lower casting frame 4.

上鋳枠９は、シリンダ１０に装着されており、シリンダ１０の伸縮作動により昇降して、マッチプレート７に対して進退動する。上鋳枠９の外側面の四隅付近には、これをマッチプレート７から強制的に押し離すための４本の下向きの油圧シリンダ（上押離し手段）１１が装着してある。同様に、下鋳枠４の外側面の四隅付近には、これをマッチプレート７から強制的に押し離す上向きの４本の空圧シリンダ（下押離し手段）１２が装着してある。   The upper casting frame 9 is attached to the cylinder 10, and is moved up and down by the expansion and contraction operation of the cylinder 10 to advance and retract with respect to the match plate 7. Near the four corners of the outer surface of the upper casting frame 9, four downward hydraulic cylinders (upward pushing means) 11 for forcibly pushing them away from the match plate 7 are mounted. Similarly, in the vicinity of the four corners of the outer surface of the lower casting frame 4, four upward pneumatic cylinders (lower pressing and releasing means) 12 for forcibly pressing them away from the match plate 7 are mounted.

図３に示すように、造型機には、４本の油圧シリンダ１１及び４本の空圧シリンダ１２に対して加圧油及び圧縮空気をそれぞれ供給及び排出する加圧流体ユニット１３が設けてある。この加圧流体ユニット１３においては、加圧油を発生する油圧ポンプを有する油圧ユニット１４及び圧縮空気を発生するコンプレッサ１５が設けてある。油圧ユニット１４の油圧ポンプには、下向きの油圧シリンダ１６の上側ポート及び下側ポートがそれぞれ方向切換弁１７及び開閉弁１８を介して接続してある。   As shown in FIG. 3, the molding machine is provided with a pressurized fluid unit 13 for supplying and discharging pressurized oil and compressed air to and from four hydraulic cylinders 11 and four pneumatic cylinders 12, respectively. . The pressurized fluid unit 13 includes a hydraulic unit 14 having a hydraulic pump that generates pressurized oil and a compressor 15 that generates compressed air. An upper port and a lower port of a downward hydraulic cylinder 16 are connected to the hydraulic pump of the hydraulic unit 14 via a direction switching valve 17 and an opening / closing valve 18, respectively.

油圧シリンダ１６のピストンロッドの下端には押板１９が固着してあり、この押板１９の下方には、４本の油圧シリンダ１１のそれぞれの上側ポートへ４本の配管２０を介して加圧油をそれぞれ押出し供給する４本の加圧油押出し機構２１が、その上端部を押板１９に当接して設けてある。各々の押出し機構２１は、上向き油圧シリンダ構造を有している。４本の配管２０は４個の開閉弁２２をそれぞれ介して油圧ユニット１４の油圧ポンプに接続してあり、４本の油圧シリンダ１１の下側ポートは方向切換弁１７を介して油圧ユニット１４に接続してある。４本の空圧シリンダ１２は方向切換弁２３を介してコンプレッサ１５に接続してある。   A push plate 19 is fixed to the lower end of the piston rod of the hydraulic cylinder 16. Under the push plate 19, pressure is applied to each upper port of the four hydraulic cylinders 11 via four pipes 20. Four pressurized oil extruding mechanisms 21 each for extruding and supplying oil are provided in contact with the pressing plate 19 at the upper ends thereof. Each extrusion mechanism 21 has an upward hydraulic cylinder structure. The four pipes 20 are connected to the hydraulic pump of the hydraulic unit 14 through four on-off valves 22, and the lower ports of the four hydraulic cylinders 11 are connected to the hydraulic unit 14 through the direction switching valve 17. Connected. The four pneumatic cylinders 12 are connected to the compressor 15 via the direction switching valve 23.

このような造型機においては、図１及び図２に示す状態に先立って、鋳型造型ステーション（図示せず）において、マッチプレート７を上及び下鋳枠９及び４によって狭持し、且つ上及び下鋳枠９及び４におけるマッチプレート７とは反対側に位置する開口に上及び下スクイズ部材(図示せず)をそれぞれ挿入して上及び下造型空間をそれぞれ規定する。続いて、上及び下造型空間を規定する上及び下鋳枠９及び４、マッチプレート７、及び関連部品等を垂直姿勢或いは水平姿勢にして、上及び下鋳枠９及び４の砂吹き込み口から鋳物砂を上及び下造型空間へ吹き込んで充填する。その後、上及び下スクイズ部材をマッチプレート７へ向けて駆動して上及び下造型空間内の鋳物砂をそれぞれスクイズし、上及び下鋳型を同時に造型する。これにより造型機は図１及び図２に示す状態となる。   In such a molding machine, prior to the state shown in FIGS. 1 and 2, in a mold molding station (not shown), the match plate 7 is held between the upper and lower casting frames 9 and 4, and the upper and lower Upper and lower squeeze members (not shown) are respectively inserted into openings located on the opposite sides of the lower casting frames 9 and 4 from the match plate 7 to define upper and lower molding spaces. Subsequently, the upper and lower casting frames 9 and 4 that define the upper and lower molding spaces, the match plate 7, and related parts are set in a vertical posture or a horizontal posture, and the sand blowing ports of the upper and lower casting frames 9 and 4 are used. The foundry sand is blown and filled into the upper and lower molding spaces. Thereafter, the upper and lower squeeze members are driven toward the match plate 7 to squeeze the foundry sand in the upper and lower molding spaces, respectively, and the upper and lower molds are molded simultaneously. Thereby, the molding machine is in the state shown in FIGS.

一方、予め開閉弁１８を開いてシリンダ１６の下ポート及び４個の加圧油押出し機構２１の上ポートに加圧油を供給してシリンダ１６を収縮作動させ、且つ４個の加圧油押出し機構２１を伸長させたのち開閉弁１８を閉じ、更に、４個の開閉弁２２をそれぞれ開いて油圧ユニット１４の油圧ポンプから加圧油を４本の配管２０及び４個の加圧油押出し機構２１の下ポートにそれぞれ供給すると共に、４個の油圧シリンダ１１の上ポートにも加圧油をそれぞれ供給して４個の油圧シリンダ１１をそれぞれ収縮させた後、４個の開閉弁２２を閉じて４本の配管２０と油圧ユニット１４との間を遮断しておく。   On the other hand, the on-off valve 18 is opened in advance, pressure oil is supplied to the lower port of the cylinder 16 and the upper port of the four pressurized oil pushing mechanisms 21 to cause the cylinder 16 to contract, and the four pressurized oil pushers are pushed out. After the mechanism 21 is extended, the on-off valve 18 is closed, and further, the four on-off valves 22 are opened, and the pressurized oil is supplied from the hydraulic pump of the hydraulic unit 14 to the four pipes 20 and the four pressurized oil pushing mechanisms. In addition, the pressure oil is supplied to the upper ports of the four hydraulic cylinders 11 to respectively contract the four hydraulic cylinders 11 and then the four on-off valves 22 are closed. The four pipes 20 and the hydraulic unit 14 are shut off.

次いで、図１及び図２に示す状態から、シリンダ１０を伸長作動して上鋳枠９を、他のシリンダ（図示せず）を収縮作動してマッチプレート７をそれぞれ上昇させる。この場合、上鋳枠９の上昇速度を、マッチプレート７のそれより２倍速くし、方向切換弁１７を切り換えてシリンダ１６を伸長作動する。このシリンダ１６の伸長作動により４個の加圧油押出し機構２１を押板１９を介し収縮させて４本の油圧シリンダ１１の上側ポートに加圧油を供給し、４本の油圧シリンダ１１を伸長作動させる。これと同時に、方向切換弁２３を切り換えてコンプレッサ１５から４本の空圧シリンダ１２へ圧縮空気を供給して、これらを伸長させる。これに伴い、４本の油圧シリンダ１１がマッチプレート７を下方に押圧すると同時に４本の空圧シリンダ１２がマッチプレート7を上方に押圧し、この結果、鋳型を内蔵する上及び下鋳枠９及び４はマッチプレート7からそれぞれ強制的に同時に相対的に押し離されることとなる。即ち、従来の二段階の抜型とは対照的に、上及び下鋳枠９及び４の抜型が同時になされる。従って、従来の第２の抜型（一方の鋳型が付着したマッチプレートからの対応する鋳枠の抜型）における衝撃の発生及びそれに起因する当該鋳型の欠陥の発生を防止することできる。   Next, from the state shown in FIGS. 1 and 2, the cylinder 10 is extended to operate the upper casting frame 9, and the other cylinders (not shown) are contracted to raise the match plate 7. In this case, the ascending speed of the upper casting frame 9 is made twice as fast as that of the match plate 7, the direction switching valve 17 is switched, and the cylinder 16 is extended. By the expansion operation of the cylinders 16, the four pressure oil extruding mechanisms 21 are contracted via the push plates 19 to supply the pressure oil to the upper ports of the four hydraulic cylinders 11, and the four hydraulic cylinders 11 are expanded. Operate. At the same time, the direction switching valve 23 is switched to supply compressed air from the compressor 15 to the four pneumatic cylinders 12 to expand them. Along with this, the four hydraulic cylinders 11 press the match plate 7 downward, and simultaneously the four pneumatic cylinders 12 press the match plate 7 upward. As a result, the upper and lower casting frames 9 containing the molds. And 4 are forcibly pushed away from the match plate 7 at the same time. That is, in contrast to the conventional two-stage die cutting, the upper and lower casting frames 9 and 4 are simultaneously punched. Therefore, it is possible to prevent the occurrence of an impact and the occurrence of a defect of the mold due to the conventional second mold (the mold of the corresponding casting frame from the match plate to which one mold is attached).

この場合、上鋳枠９の上昇速度を、マッチプレート７のそれより２倍速くすることにより、その後の工程において、上及び下鋳枠９及び４をマッチプレート7からそれぞれ強制的に同時に押し離す際の空間を確保することができる。   In this case, by raising the rising speed of the upper casting frame 9 twice as much as that of the match plate 7, the upper and lower casting frames 9 and 4 are forcibly pushed away from the match plate 7 simultaneously in the subsequent steps. A space can be secured.

本発明に係る造型機及び造型方法の好ましい実施例を示して説明したが、添付の請求項に記載された本発明の趣旨及び目的を逸脱することなく、様々な変更及び変形が可能であることに留意されたい。従って本発明が適用されるマッチプレート造型機の構成及び操作手順は、説明及び図示したものに限定されるものではない。例えば造型機のマッチプレート、上及び下鋳枠は、マッチプレートを上鋳枠と下鋳枠との間に挟持した後に回動させてもよく、或いは上及び下鋳枠を回動させた後に、それらの間にマッチプレートを挟持してもよい。即ち、マッチプレートの挟持と回動のタイミングは本発明を限定するものではない。本発明に係る造型機及び造型方法により造型される上及び下鋳型は、枠付き鋳型でも無枠鋳型でもよい。   Although the preferred embodiments of the molding machine and molding method according to the present invention have been shown and described, various changes and modifications can be made without departing from the spirit and object of the present invention described in the appended claims. Please note that. Therefore, the configuration and operation procedure of the match plate molding machine to which the present invention is applied are not limited to those described and illustrated. For example, the match plate, upper and lower casting frames of a molding machine may be rotated after the match plate is sandwiched between the upper and lower casting frames, or after the upper and lower casting frames are rotated. A match plate may be sandwiched between them. That is, the timing of holding and turning the match plate does not limit the present invention. The upper and lower molds formed by the molding machine and molding method according to the present invention may be framed molds or frameless molds.

また、本発明の造型機における加圧流体ユニット１３は、図３に示した実施例に限定されるものではない。図３の加圧流体ユニット１３に代えて、例えば図４に示す代替的な加圧流体ユニット１３Ａを用いてもよい。図４に示す代替的な加圧流体ユニット１３Ａが図３に示す加圧流体ユニット１３と異なる点は、油圧シリンダ１６及び開閉弁１８を廃し、加圧油押出し機構２１の上側ポートを方向切換弁１７に接続したことである。図４の加圧流体ユニット１３Ａのその他の構成要素については、図３の加圧流体ユニット１３において同一符号を示したものと同様であるので、その説明は省略する。   Further, the pressurized fluid unit 13 in the molding machine of the present invention is not limited to the embodiment shown in FIG. Instead of the pressurized fluid unit 13 in FIG. 3, for example, an alternative pressurized fluid unit 13A shown in FIG. 4 may be used. The alternative pressurized fluid unit 13A shown in FIG. 4 is different from the pressurized fluid unit 13 shown in FIG. 3 in that the hydraulic cylinder 16 and the on-off valve 18 are eliminated, and the upper port of the pressurized oil pushing mechanism 21 is connected to the direction switching valve. 17 is connected. The other components of the pressurized fluid unit 13A shown in FIG. 4 are the same as those shown in the pressurized fluid unit 13 shown in FIG.

この代替的な加圧流体ユニット１３Ａを用いた造型機の作動について説明する。先ず、上述の実施例と同様にして上及び下鋳型を同時に造型すると、造型機は図１及び図２に示す状態となる。一方、４個の開閉弁２２をそれぞれ開いて油圧ユニット１４の油圧ポンプから加圧油を４本の配管２０及び４個の加圧油押出し機構２１の下ポートにそれぞれ供給すると共に、４個の油圧シリンダ１１の上ポートにも加圧油をそれぞれ供給して４個の油圧シリンダ１１をそれぞれ収縮させた後、４個の開閉弁２２を閉じて４本の配管２０と油圧ユニット１４との間を遮断しておく。   The operation of the molding machine using this alternative pressurized fluid unit 13A will be described. First, when the upper and lower molds are formed at the same time as in the above-described embodiment, the molding machine is in the state shown in FIGS. On the other hand, the four on-off valves 22 are opened to supply pressurized oil from the hydraulic pump of the hydraulic unit 14 to the four pipes 20 and the lower ports of the four pressurized oil pushing mechanisms 21, respectively. After the pressurized oil is supplied to the upper ports of the hydraulic cylinders 11 to contract the four hydraulic cylinders 11, the four on-off valves 22 are closed to connect the four pipes 20 and the hydraulic unit 14. Shut off.

次いで、図１及び図２に示す状態から、シリンダ１０を伸長作動して上鋳枠９を、他のシリンダ（図示せず）を収縮作動してマッチプレート７をそれぞれ上昇させる。この場合、好ましくは上鋳枠９の上昇速度を、マッチプレート７のそれより２倍速くし、方向切換弁１７を切り換えて加圧油押出し機構２１を押板１９を介して収縮作動させて４本の油圧シリンダ１１の上側ポートに加圧油を供給し、これら４本の油圧シリンダ１１を伸長作動させる。これと同時に、方向切換弁２３を切り換えてコンプレッサ１５から４本の空圧シリンダ１２へ圧縮空気を供給して、これらを伸長させる。これに伴い、４本の油圧シリンダ１１がマッチプレート７を下方に押圧すると同時に４本の空圧シリンダ１２がマッチプレート７を上方に押圧する。その結果、鋳型を内蔵する上及び下鋳枠９及び４はマッチプレート７からそれぞれ強制的に同時に相対的に押し離されることとなる。このようにして上述した実施例と同様にして上及び下鋳枠９及び４の抜型が同時になされる。   Next, from the state shown in FIGS. 1 and 2, the cylinder 10 is extended to operate the upper casting frame 9, and the other cylinders (not shown) are contracted to raise the match plate 7. In this case, preferably, the ascending speed of the upper casting frame 9 is made twice as fast as that of the match plate 7, the direction switching valve 17 is switched, and the pressurized oil pushing mechanism 21 is contracted via the push plate 19. The pressurized oil is supplied to the upper port of the hydraulic cylinder 11 and the four hydraulic cylinders 11 are extended. At the same time, the direction switching valve 23 is switched to supply compressed air from the compressor 15 to the four pneumatic cylinders 12 to expand them. Accordingly, the four hydraulic cylinders 11 press the match plate 7 downward, and at the same time, the four pneumatic cylinders 12 press the match plate 7 upward. As a result, the upper and lower casting frames 9 and 4 containing the mold are forcibly and relatively pushed away from the match plate 7 respectively. In this manner, the upper and lower casting frames 9 and 4 are simultaneously punched in the same manner as in the above-described embodiment.

Claims (9)

上鋳枠と下鋳枠とによってマッチプレートを狭持する段階と、；前記上鋳枠及び下鋳枠における前記マッチプレートの反対側に位置する開口に前記マッチプレートに対向してそれぞれ上スクイズ部材及び下スクイズ部材を挿入して上部造型空間と下部造型空間とをそれぞれ規定する段階と、；前記規定された上部造型空間と下部造型空間に鋳物砂を充填する段階と、；前記上及び下スクイズ部材をそれぞれ前記マッチプレートへ向けて駆動して、前記上及び下鋳型造型空間内の鋳物砂をそれぞれスクイズすることにより、上及び下鋳型を同時に造型する段階とを含む鋳型造型方法において、
前記造型された上及び下鋳型を包含する前記上及び下鋳枠を同時に前記マッチプレートから強制的に速度ゼロから押し離すことを特徴とする上下鋳型造型方法。 Clamping the match plate between the upper and lower casting frames; and upper squeeze members facing the match plate in openings located on the opposite sides of the match plate in the upper and lower casting frames, respectively. And defining an upper molding space and a lower molding space by inserting a lower squeeze member; filling the casting sand into the defined upper molding space and the lower molding space; and In the mold making method, including driving the members toward the match plate and simultaneously molding the upper and lower molds by respectively squeezing the foundry sand in the upper and lower mold making spaces,
An upper and lower mold making method characterized in that the upper and lower casting frames including the molded upper and lower molds are simultaneously forcedly pushed away from the speed zero from the match plate. 請求項１の方法において、前記上鋳枠が前記下鋳枠から分離する速度は、前記マッチプレートが前記下鋳枠から分離する速度の２倍程度速く、且つ前記上鋳枠の前記マッチプレートからの分離速度は、前記下鋳枠が前記マッチプレートから分離する速度と同一である方法。 The method according to claim 1, wherein a speed at which the upper casting frame is separated from the lower casting frame is about twice as fast as a speed at which the match plate is separated from the lower casting frame, and from the match plate of the upper casting frame. The separation speed is the same as the separation speed of the lower casting frame from the match plate. 上鋳枠と下鋳枠と：これら上鋳枠と下鋳枠とによって狭持されるべきマッチプレートと、；前記上鋳枠及び下鋳枠における前記マッチプレートの反対側に位置する開口に前記マッチプレートに対向してそれぞれ挿入される上スクイズ部材及び下スクイズ部材と、；前記上鋳枠、前記マッチプレート、及び前記上スクイズ部材により規定された上造型空間と、前記下鋳枠、前記マッチプレート、及び前記下スクイズ部材により規定された下造型空間とに鋳物砂を充填する手段と、；前記上及び下造型空間内の鋳物砂をそれぞれスクイズして、上及び下鋳型を同時に造型するように、前記上及び下スクイズ部材をそれぞれ前記マッチプレートへ向けて駆動する駆動手段とを備えるマッチプレート造型機において、
前記上及び下鋳枠に、前記造型された上及び下鋳型を包含する前記上及び下鋳枠を同時に前記マッチプレートから強制的に速度ゼロから押し離す上及び下押離し手段を設けたことを特徴とするマッチプレート造型機。 An upper casting frame and a lower casting frame; a match plate to be sandwiched between the upper casting frame and the lower casting frame; and an opening located on the opposite side of the matching plate in the upper casting frame and the lower casting frame An upper squeeze member and a lower squeeze member respectively inserted facing the match plate; an upper molding space defined by the upper cast frame, the match plate, and the upper squeeze member, the lower cast frame, and the match Means for filling molding sand into the plate and the lower molding space defined by the lower squeeze member; and squeezing the molding sand in the upper and lower molding spaces, respectively, so as to mold the upper and lower molds simultaneously. In addition, in a match plate molding machine comprising driving means for driving the upper and lower squeeze members respectively toward the match plate,
The upper and lower casting frames are provided with upper and lower pushing means for forcibly pushing the upper and lower casting frames including the molded upper and lower molds simultaneously from the match plate from zero speed. Characteristic match plate molding machine. 請求項３の造型機において、前記上押離し手段は加圧油の供給により伸長する油圧シリンダであり、
前記下押離し手段は前記上押離し手段よりも小さい押出し力を出力する油圧シリンダ、圧縮空気の供給により伸長する空圧シリンダ、又は弾性部材により伸長作動する弾性手段である造型機。 4. The molding machine according to claim 3, wherein the upper push-off means is a hydraulic cylinder that is extended by supply of pressurized oil,
The lower push-off means is a molding machine that is a hydraulic cylinder that outputs a pushing force smaller than that of the upper push-out means, a pneumatic cylinder that is extended by supplying compressed air, or an elastic means that is extended by an elastic member. 請求項３又は４の造型機において、前記上及び下鋳枠はそれぞれ側壁に砂供給孔を有する造型機。 5. The molding machine according to claim 3, wherein the upper and lower casting frames each have a sand supply hole on a side wall. 請求項３又は４の造型機において、前記下鋳枠は垂直面内で上下回動する回動フレームに固着され、前記上鋳枠は前記下鋳枠に対し進退可能にして前記回動フレームに装着されている造型機。 5. The molding machine according to claim 3, wherein the lower casting frame is fixed to a rotating frame that rotates vertically within a vertical plane, and the upper casting frame can be moved forward and backward with respect to the lower casting frame. Molding machine installed. 請求項３又は４の造型機において、前記上鋳枠と下鋳枠との間に前記マッチプレートを挿脱させるように、前記マッチプレートを搬送する搬送機構を更に備える造型機。 5. The molding machine according to claim 3, further comprising a transport mechanism that transports the match plate so that the match plate is inserted and removed between the upper casting frame and the lower casting frame. 請求項３又は４の造型機において、前記マッチプレートを前記下鋳枠に対して進退させる機構を更に備える造型機。 5. The molding machine according to claim 3, further comprising a mechanism for moving the match plate forward and backward with respect to the lower casting frame. 請求項３又は４の造型機において、造型される前記上及び下鋳型が枠付鋳型又は無枠鋳型である造型機。 5. The molding machine according to claim 3, wherein the upper and lower molds to be molded are framed molds or frameless molds.
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