JP2009214158A - Die moving type gravity casting equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide die moving type gravity casting equipment which improves feeding capacity, so as to suppress the generation of shrinkage cavity, and can cast a cast product of high quality at a high yield in a short solidification time, and in which equipment cost is low and energy consumption is reduced. <P>SOLUTION: Disclosed is die moving type gravity casting equipment 1 comprising: a gravity casting die 30 supplying a molten metal 3 by gravity; and moving type casting equipment 10 circulating the gravity casting die 30, so as to perform casting, wherein, after the molten metal 3 is poured into the gravity casting die 30 by a tilt apparatus 13, utilizing driving force transferring the gravity casting die 30 by a transferring apparatus 19 and gravity, the feeding operation of the gravity casting die 30 is performed, and, utilizing rotating force rotating the gravity casting die 30 by a tilt returning apparatus 16 and gravity, a tilt returning operation is performed, and the gravity casting die 30 is returned to a rotating position in a state before the tilt by the tilt apparatus 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、金型がライン上を移動しながら重力を利用して鋳造する金型移動式重力鋳造設備に関するものであり、特に、引け巣発生を抑制する押し湯に係わる。   The present invention relates to a die moving type gravity casting facility in which a die is cast using gravity while moving on a line, and more particularly to a feeder bath that suppresses shrinkage nest generation.

従来技術の引け巣発生抑制の押し湯に係わる鋳造装置として、キャビティに溶湯を充填するための溶湯充填装置と、キャビティに溶湯を充填する際に溶湯が進入する溶湯進入領域がキャビティとともに形成されている金型と、キャビティ内あるいは溶湯進入領域内に溶湯が存在するか否かを直接検知する溶湯検知手段と、溶湯検知手段が溶湯の存在を検知したときに、溶湯検知手段から発信される溶湯検知信号に基づいて、キャビティに充填された溶湯を溶湯が凝固する前に局部的に加圧する加圧手段と、を有する溶湯装置が開示されている。この溶湯装置の加圧手段は、局部加圧ピンを有するとともに、溶湯検知信号に基づいて、局部加圧ピンをキャビティ内に充填されている溶湯を局部的に加圧する（例えば、特許文献１参照。）。   As a casting device related to the molten metal for suppressing shrinkage generation in the prior art, a molten metal filling device for filling the cavity with the molten metal and a molten metal intrusion region where the molten metal enters when the molten metal enters the cavity are formed together with the cavity. A molten metal detecting means for directly detecting whether or not there is a molten metal in the cavity or the molten metal intrusion region, and a molten metal transmitted from the molten metal detecting means when the molten metal detecting means detects the presence of the molten metal. There is disclosed a molten metal apparatus having pressurizing means for locally pressurizing a molten metal filled in a cavity before the molten metal solidifies based on a detection signal. The pressurizing means of the molten metal apparatus has a local pressure pin and locally pressurizes the molten metal filled in the cavity with the local pressure pin based on the molten metal detection signal (see, for example, Patent Document 1). .)

また、従来技術の金型移動式鋳造型設備として、金型に溶湯を供給する給湯装置と、溶湯が給湯された金型を傾斜させて金型内に溶湯を充填する傾動装置と、充填された溶湯が凝固されるための冷却装置とを移送装置により連結し、金型を循環させながら鋳造を行う金型移動式鋳造設備において、金型を循環させる本ラインと、本ラインとは別にサブラインを設け、サブラインは給湯装置と取出装置の間に配設される金型移動式鋳型設備が開示されている（例えば、特許文献２参照。）。
特開平２００４−２０２５２０号公報 特開平２００３−１０９６３号公報 Further, as a conventional mold moving casting mold facility, a hot water supply device for supplying molten metal to the mold, a tilting device for inclining the mold to which the molten metal is supplied and filling the mold with the molten metal, and filling are provided. In the mold moving casting equipment, which is connected to the cooling device for solidifying the molten metal by the transfer device and casting while circulating the mold, this line that circulates the mold and the sub-line separately from this line A mold moving type mold facility is disclosed in which a subline is disposed between a hot water supply device and a take-out device (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 2004-202520 Japanese Patent Laid-Open No. 2003-10963

しかしながら、特許文献１によれば、局部加圧ピンによりキャビティ内に充填される溶湯を局部的に加圧して押し湯が実施され、引け巣の発生を抑制しているが、局部加圧ピンを駆動するために加圧装置と、加圧装置用の制御装置と、溶湯の有無を検知する溶湯検知センサとが必要となる。このため、設備費が増大する問題と、局部加圧ピンを駆動するため、比較的大きなエネルギーが毎ショット必要となる問題がある。   However, according to Patent Document 1, the molten metal filled in the cavity is locally pressurized by the local pressurizing pin and the hot water is carried out to suppress the formation of shrinkage nests. In order to drive, a pressurizing device, a control device for the pressurizing device, and a molten metal detection sensor for detecting the presence or absence of the molten metal are required. For this reason, there is a problem that the equipment cost increases and a problem that a relatively large energy is required for each shot because the local pressure pin is driven.

また、特許文献２によれば、金型移動式鋳造型設備は、本ラインと、本ラインとは別にサブラインを設け設備の生産性向上と、稼動率向上を図っているが、押し湯による引き巣抑制はなされていないため、歩留まりが低く、凝固時間が長い問題がある。   Further, according to Patent Document 2, the mold movable casting mold facility is provided with a sub-line separately from the main line and the main line to improve the productivity of the facility and the operating rate. Since nest suppression is not performed, there is a problem that the yield is low and the coagulation time is long.

本発明は上記問題点に鑑みてなされたものであり、押し湯能力を向上させ引け巣の発生を抑制し、高品質で、歩留まりが高く、凝固時間の短い、鋳造製品を鋳造でき、しかも設備費が安く、消費エネルギーの少ない金型移動式重力鋳造設備を提供することを目的とする。   The present invention has been made in view of the above-mentioned problems, and can improve the feeder capacity, suppress the generation of shrinkage nests, and can cast a cast product with high quality, high yield, short solidification time, and equipment. The object is to provide a die moving gravity casting facility that is inexpensive and consumes less energy.

上記課題を解決するため、請求項１に記載の発明は、溶湯が供給される重力鋳造金型と、前記重力鋳造金型を循環させて鋳造を行う移動式鋳造設備と、を備える金型移動式重力鋳造設備であって、前記重力鋳造金型を傾動し前記重力鋳造金型に前記溶湯を注湯する傾動装置と、前記重力鋳造金型を冷却して注湯された前記溶湯を凝固させる冷却装置と、傾動した前記重力鋳造金型を元の回転位置に戻す傾動戻し装置と、前記傾動装置と、前記冷却装置と、前記傾動戻し装置との間を連結して前記重力鋳造金型を移送する移送装置と、前記傾動装置冷却装置との間に配設される第１ガイドレールと、前記傾動戻し装置又は前記傾動戻し装置に配設される第２ガイドレールとを備え、前記重力鋳造金型は、該重力鋳造金型の内部で鋳造品を形成するキャビティを有し、該キャビティの一方を形成する上型と、該上型と当接して前記キャビティの他方を形成する下型と、前記上型と前記下型が当接したときに前記キャビティを前記重力鋳造金型の外部と連通させる押し湯孔を有し、該押し湯孔には内部を進退自在に動く加圧ピンと、前記加圧ピンの端部に一体に固着された加圧板と、前記上型に配設され前記上型の側面を進退自在に動くシャッターとを有し、前記加圧板は、前記加圧ピンとの固着面に第１スライド部を有し、前記シャッターは、該第１スライド部との当接面に第２スライド部を有し、更に、前記加圧板に固着され、前記加圧ピンの進退方向と直行方向に延在する第１受力部材と、前記シャッターに固着され、前記加圧ピンの進退方向と同軸方向に延在する第２受力部材とを有し、前記移送装置で前記重力鋳造金型を前記傾動装置から前記冷却装置に移送する途中、前記第２受力部材は前記第１ガイドレールに当接して、前記第１ガイドレールは前記加圧板止めシャッターを前記加圧板から離れる方向にスライドさせ、前記加圧板を落下させて前記第２スライド部を第１スライド部から脱離させ、前記傾動戻し装置で前記重力鋳造金型を傾動戻し途中、前記第１受力部材は前記第２ガイドレールに当接して、前記第２ガイドレールは前記加圧板を前記押し湯孔から離れる方向に移動させ、前記加圧板止めシャッターを落下させて第２スライド部を前記第１スライド部に当接させる。   In order to solve the above-mentioned problem, the invention according to claim 1 is a mold movement comprising: a gravity casting mold to which a molten metal is supplied; and a mobile casting facility that performs casting by circulating the gravity casting mold. And a tilting device that tilts the gravity casting mold to pour the molten metal into the gravity casting mold, and cools the gravity casting mold to solidify the poured molten metal. The gravity casting mold is connected by connecting a cooling device, a tilting return device for returning the tilted gravity casting mold to its original rotational position, the tilting device, the cooling device, and the tilting return device. A first guide rail disposed between a transporting device for transporting and the tilting device cooling device; and a second guide rail disposed on the tilting return device or the tilting return device, the gravity casting The mold forms a cast product inside the gravity casting mold. An upper mold that has a cavity and forms one of the cavities; a lower mold that abuts the upper mold to form the other of the cavities; and the cavity when the upper mold and the lower mold abut A pressurizing hole that communicates with the outside of the gravity casting mold, a pressurizing pin that moves inside and outside the pressurizing hole, and a pressurizing plate that is integrally fixed to an end of the pressurizing pin; A shutter that is disposed on the upper mold and moves in a reciprocating manner on the side surface of the upper mold, the pressure plate has a first slide portion on a fixing surface with the pressure pin, and the shutter A first force receiving member that has a second slide portion on a contact surface with the one slide portion, is fixed to the pressure plate, and extends in a forward / backward direction and an orthogonal direction of the pressure pin; and the shutter A second force receiving member fixed and extending in a direction coaxial with the advancing and retreating direction of the pressure pin; The second force receiving member abuts on the first guide rail while the gravity casting mold is being transferred from the tilting device to the cooling device by the transfer device, and the first guide rail is The pressure plate stop shutter is slid in a direction away from the pressure plate, the pressure plate is dropped, the second slide portion is detached from the first slide portion, and the gravity casting mold is being tilted back by the tilt return device. The first force receiving member abuts on the second guide rail, the second guide rail moves the pressure plate in a direction away from the feeder hole, and drops the pressure plate stop shutter to form a second. The slide part is brought into contact with the first slide part.

また、請求項２に記載の発明は、圧力ピンによる押し湯の加圧力は、加圧ピンの重量と、加圧板の重量で調整する。   In the invention according to claim 2, the pressurizing force of the hot water by the pressure pin is adjusted by the weight of the pressure pin and the weight of the pressure plate.

また、請求項３に記載の発明は、加圧ピンの押し湯による加圧タイミングは、第１ガイドレールが傾動装置と冷却装置との間に配備される位置で調整する。   According to a third aspect of the present invention, the pressurizing timing of the pressurizing pin with the hot water is adjusted at a position where the first guide rail is disposed between the tilting device and the cooling device.

また、請求項４に記載の発明は、加圧ピンは、重力鋳造金型の溶湯を加圧するセラミック又は耐熱ガラスいずれかの材質の加圧ピンヘッドと、一端が加圧ピンヘッドに連結され他端が加圧板に連結される連結部材と、を備える。   According to a fourth aspect of the present invention, the pressure pin includes a pressure pin head made of either ceramic or heat-resistant glass that pressurizes the molten metal of the gravity casting mold, one end connected to the pressure pin head, and the other end. A coupling member coupled to the pressure plate.

また、請求項５に記載の発明は、加圧ピンは押し湯孔の内周面に３箇所、線接触する。   In the invention according to claim 5, the pressure pins are in line contact with the inner peripheral surface of the feeder hole at three locations.

また、請求項６に記載の発明は、押し湯孔は、複数個設けられ、隣り合う押し湯孔のうち配置距離の長い方向に長孔である。   Moreover, the invention of Claim 6 is provided with a plurality of feeder holes, and is a long hole in the direction in which the arrangement distance is long among adjacent feeder holes.

請求項１に記載の発明では、金型移動式鋳造設備は、傾動装置で所定の角度まで（例えば、９０度）傾動し、重力を利用して重力鋳造金型（以後、金型）に溶湯を鋳込んだ後、移送装置で傾動装置から冷却装置に金型を移送する途中、第１受力部材が当たる第１ガイドレールを配備される。また、金型移動式鋳造設備は、冷却装置で金型を冷却し溶湯を凝固された後、傾動戻し装置で金型を傾動して、傾動装置で傾動する以前の状態に戻する途中、第２受力部材が当たる第２ガイドレールを配備される。   In the first aspect of the present invention, the mold moving casting equipment is tilted to a predetermined angle (for example, 90 degrees) by a tilting device, and a gravity casting mold (hereinafter referred to as a mold) is melted using gravity. In the middle of transferring the mold from the tilting device to the cooling device by the transfer device, the first guide rail against which the first force receiving member hits is arranged. In addition, the mold moving casting equipment has a process in which the mold is cooled by the cooling device and the molten metal is solidified, and then the mold is tilted by the tilting return device and returned to the state before being tilted by the tilting device. 2 The 2nd guide rail which a force receiving member contacts is arranged.

上型と下型が当接して形成される押し湯孔は、傾動時キャビティの上側に位置する。加圧板に設けられた第１スライド部は、冷却装置へ向かう金型の移送される方向に直交する断面で、落下方向に対し押し湯孔に近づく方向に傾斜する。従って、加圧板止めシャッターで加圧板の落下を阻止した状態で、金型は傾動装置により所定の角度（例えば略９０度）まで傾動され、注湯される。   The hot water hole formed by contacting the upper mold and the lower mold is located above the cavity during tilting. The first slide portion provided on the pressure plate is a cross section orthogonal to the direction in which the mold toward the cooling device is transferred, and is inclined in a direction approaching the feeder hole with respect to the dropping direction. Accordingly, the mold is tilted to a predetermined angle (for example, approximately 90 degrees) by the tilting device and poured with the pressurizing plate stop shutter preventing the pressure plate from dropping.

傾動、注湯終了後、移送装置により金型が、傾動装置から冷却装置に移送する途中、第２受力部材が第１ガイドレールに当接して、第１ガイドレールに沿って移動し、金型が移動される力を利用して、第２スライド部は第１スライド部をスライドする。第２スライド部がスライドすると、加圧板と、加圧板に連結した加圧ピンは自重落下して、加圧ピンと加圧板の合計した重量で押し湯孔の溶湯を加圧し、押し湯が行われる。金型内の溶湯の押し湯が行われるにより、金型のキャビティに鋳込まれた鋳造製品であるワークの引け巣発生が抑制される。   After the end of tilting and pouring, while the mold is being transferred from the tilting device to the cooling device by the transfer device, the second force receiving member comes into contact with the first guide rail and moves along the first guide rail. The second slide part slides on the first slide part using the force by which the mold is moved. When the second slide part slides, the pressure plate and the pressure pin connected to the pressure plate fall by their own weight, pressurize the molten metal in the hot water hole with the total weight of the pressure pin and the pressure plate, and the hot water is performed. . By pushing the molten metal in the mold, the occurrence of shrinkage cavities of the workpiece, which is a cast product cast into the cavity of the mold, is suppressed.

金型が冷却装置で冷却され、金型内の溶湯が凝固した後、金型は移送装置により傾動戻し装置に移送され、傾動戻し装置により傾動され、傾動装置による傾動以前の回転位置の状態に戻される。傾動戻し装置で金型を元の回転位置に戻す傾動戻し途中、第１受力部位材は第２ガイドレールに当たる。この時、金型が傾動される回転力を利用して、加圧板は第２ガイドレールから力を受け、加圧ピンと共に押し湯孔から抜ける方向に移動する。加圧板が移動すると、加圧板止めシャッターが自重落下し、第２スライド部は第１スライド部をスライドして、加圧板および加圧ピンを傾動装置による傾動以前の元の位置に戻る。また、ホッパーも傾動装置による傾動以前の元の位置に戻もどる。   After the mold is cooled by the cooling device and the molten metal in the mold is solidified, the mold is transferred to the tilt return device by the transfer device, is tilted by the tilt return device, and is in the rotational position before the tilt by the tilt device. Returned. The first force receiving part material hits the second guide rail during the tilting return to return the mold to the original rotational position by the tilting return device. At this time, the pressure plate receives the force from the second guide rail using the rotational force by which the mold is tilted, and moves together with the pressure pin in the direction of coming out of the feeder hole. When the pressure plate moves, the pressure plate stop shutter falls by its own weight, and the second slide portion slides on the first slide portion to return the pressure plate and the pressure pin to their original positions before tilting by the tilting device. The hopper also returns to the original position before tilting by the tilting device.

以上により、押し湯作業は、移送装置による金型を移動させる力と、傾動戻し装置による金型を回転させる回転力と、重力を利用して行われので、従来技術のピストン・シリンダーによる加圧装置及び加圧装置用制御装置が不要となり、従来技術に比べて設備費が安く、消費エネルギーの少ない金型移動式重力鋳造設備を提供できる。   As described above, the hot water work is performed using the force that moves the mold by the transfer device, the rotational force that rotates the mold by the tilt return device, and gravity. An apparatus and a control device for a pressurizing device are not required, and a die moving type gravity casting facility with low equipment cost and low energy consumption can be provided as compared with the prior art.

また、加圧ピンと加圧板の重量を使って押し湯を行うので、高品質で、歩留まりが高く、凝固時間の短い、鋳造製品を鋳造可能な金型移動式重力鋳造設備を提供できる。   Further, since the hot water is pressed using the weight of the pressure pin and the pressure plate, it is possible to provide a mold moving type gravity casting facility capable of casting a cast product with high quality, high yield and short solidification time.

また、請求項２に記載の発明では、加圧ピンによる金型内の溶湯の加圧は、加圧ピンの重量と、加圧板の重量で、金型およびワークに適した圧力に調整できるので、押し湯能力が向上する。結果、鋳造製品の引け巣発生の抑制が向上し、高品質で、歩留まりが高く、凝固時間の短い、鋳造製品を鋳造可能な金型移動式重力鋳造設備を提供できる。   In the second aspect of the invention, the pressure of the molten metal in the mold by the pressure pin can be adjusted to a pressure suitable for the mold and the workpiece by the weight of the pressure pin and the weight of the pressure plate. , The hot water capacity is improved. As a result, it is possible to provide a mold-movable gravity casting facility capable of casting a cast product with high quality, high yield, and short solidification time.

また、請求項３に記載の発明では、加圧ピンによる押し湯の加圧タイミングは、第１ガイドレールが傾動装置と冷却装置との間に配備される位置を調整して、引け巣発生を最も効果的に抑制する押し湯の加圧タイミングを決定できるので、押し湯能力が向上する。結果、引け巣発生の抑制が向上し、高品質で、歩留まりが高く、凝固時間の短い、鋳造製品を鋳造可能な金型移動式重力鋳造設備を提供できる。   In the invention according to claim 3, the pressurizing timing of the hot water by the pressurizing pin is adjusted to adjust the position where the first guide rail is disposed between the tilting device and the cooling device, thereby generating shrinkage nests. Since the pressurizing timing of the hot water that is most effectively suppressed can be determined, the hot water capacity is improved. As a result, it is possible to provide a mold moving gravity casting facility capable of casting a cast product with improved suppression of shrinkage nests, high quality, high yield, and short solidification time.

また、請求項４に記載の発明では、加圧ピンは、金型のキャビティの溶湯を加圧するセラミック又は耐熱ガラスいずれかの材質の加圧ピンヘッドと、加圧ピンヘッドと加圧板とを連結する連結部材を備える。セラミックと、耐熱ガラスの熱伝導率は、金属に比べて低いので、加圧ピンヘッドが断熱材となり、加圧ピンヘッドに濡れる溶湯から加圧ピンヘッドを介在して連結部材より外部に放出される熱は金属に比べて減少する。またセラミックと耐熱ガラスの体積当たりの熱容量は、金属に比べて小さいので、加圧ピンヘッドが溶湯で加熱される熱は金属に比べて減少する。結果、加圧ピンで押し湯をする際、キャビティ内の溶湯の指向性凝固が抑制され、引け巣発生の抑制が向上し、歩留まりの高い鋳造製品を鋳造可能な金型移動式重力鋳造設備を提供できる。   According to a fourth aspect of the present invention, the pressure pin is a connection that connects the pressure pin head and the pressure plate with a pressure pin head made of either ceramic or heat-resistant glass that pressurizes the molten metal in the mold cavity. A member is provided. Since the thermal conductivity of ceramic and heat-resistant glass is lower than that of metal, the pressure pin head becomes a heat insulator, and the heat released from the connecting member through the pressure pin head from the molten metal that gets wet with the pressure pin head Reduced compared to metal. Moreover, since the heat capacity per volume of the ceramic and the heat-resistant glass is smaller than that of metal, the heat of the pressure pin head heated by the molten metal is reduced compared to that of metal. As a result, when pressing hot metal with a pressure pin, the directional solidification of the molten metal in the cavity is suppressed, the suppression of shrinkage nest generation is improved, and the die-movable gravity casting equipment that can cast high-yield casting products. Can be provided.

また、加圧ピンは、溶湯が濡れるヘッドだけセラミック又は耐熱ガラスであるので、加圧ピン全体がセラミック又は耐熱ガラスである場合にくらべて安く出来るので、金型移動式重力鋳造設備のコストが安くなる。   Moreover, since the pressure pin is made of ceramic or heat-resistant glass only in the head where the molten metal gets wet, it can be made cheaper than the case where the entire pressure pin is made of ceramic or heat-resistant glass, so the cost of the mold moving gravity casting equipment is low. Become.

また、請求項５に記載の発明では、加圧ピンは押し湯孔の内周面に３箇所、線接触するので、加圧ピンは抉ることなくスムーズにほぼ鉛直方向に落下でき、加圧ピンによる安定した押し湯作業が可能となる。結果、引け巣発生の抑制が向上し、高品質で、歩留まりの高い鋳造製品を鋳造可能な金型移動式重力鋳造設備を提供できる。また、金型移動式重力鋳造設備の信頼性が向上する。   Further, in the invention according to claim 5, since the pressure pins are in line contact with the inner peripheral surface of the feeder hole, the pressure pins can be dropped smoothly in a substantially vertical direction without squeezing. This makes it possible to perform a stable hot-water work. As a result, the suppression of shrinkage nests is improved, and a mold moving gravity casting facility capable of casting a cast product with high quality and high yield can be provided. Further, the reliability of the mold moving gravity casting equipment is improved.

また、請求項６に記載の発明では、押し湯孔は、複数個設けられ、隣り合う押し湯孔のうち配置距離の長い方向に長孔である。鋳造時、金型は高温（例えば、略６００度）になり、熱膨張し、押し湯孔間の距離も熱膨張により増大する。一方、加圧板は常温雰囲気にあるにで、加圧ピン間の距離は、殆ど熱膨張しない。従って、押し湯孔間の距離と加圧ピン間の距離は、熱膨張の影響により差異が生じるが、押し湯孔は押し湯孔間の距離方向に長穴であるので、加圧ピンは押し湯孔に抉ることなくスムーズにほぼ鉛直方向に落下でき、加圧ピンによる安定した押し湯作業が可能となる。結果、引け巣発生の抑制が向上し、高品質で、歩留まりの高い鋳造製品を鋳造可能な金型移動式重力鋳造設備を提供できる。また、金型移動式重力鋳造設備の信頼性が向上する。   In the invention according to claim 6, a plurality of feeder holes are provided and are elongated holes in a direction in which the arrangement distance is longer among adjacent feeder holes. During casting, the mold becomes hot (for example, approximately 600 degrees) and thermally expands, and the distance between the feeder holes also increases due to the thermal expansion. On the other hand, since the pressure plate is in a room temperature atmosphere, the distance between the pressure pins hardly expands. Therefore, the distance between the feeder holes differs from the distance between the pressure pins due to the effect of thermal expansion, but the feeder holes are elongated in the distance direction between the feeder holes, so It can drop smoothly in the vertical direction without hitting the hot water hole, and a stable hot-water work with the pressure pin is possible. As a result, the suppression of shrinkage nests is improved, and a mold moving gravity casting facility capable of casting a cast product with high quality and high yield can be provided. Further, the reliability of the mold moving gravity casting equipment is improved.

（実施形態１）
以下に本発明の実施形態を図面を参照しつつ詳細に説明する。 (Embodiment 1)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１は、本発明の実施形態１に係わる金型移動式重力鋳造設備の説明図である。金型移動式重力鋳造設備１は、金型に重力を使って溶湯が供給される重力鋳造金型３０と、重力鋳造金型３０を循環させながら鋳造を行う移動式鋳造設備１０と、を備える。   FIG. 1 is an explanatory diagram of a mold moving gravity casting facility according to Embodiment 1 of the present invention. The mold moving gravity casting equipment 1 includes a gravity casting mold 30 in which molten metal is supplied to the mold using gravity, and a mobile casting equipment 10 that performs casting while circulating the gravity casting mold 30. .

図２は、重力鋳造金型の説明図で、給湯用ロボットによるホッパーへの溶湯供給が終了した状態を示す。図中（ａ）は上面図で、（ｂ）は（ａ）のＡ矢視図である。図２に示すように、重力鋳造金型３０は、上型３２と下型３３とが組合される金型本体３１と、ホッパー３６と、加圧ピン３７と、加圧板３８と、加圧板止めシャッター４０とから構成される。   FIG. 2 is an explanatory diagram of a gravity casting mold, and shows a state where the molten metal supply to the hopper by the hot water supply robot has been completed. In the figure, (a) is a top view, and (b) is a view taken in the direction of arrow A in (a). As shown in FIG. 2, the gravity casting mold 30 includes a mold body 31 in which an upper mold 32 and a lower mold 33 are combined, a hopper 36, a pressure pin 37, a pressure plate 38, and a pressure plate stopper. And a shutter 40.

ホッパー３６は、キャビティ３４に鋳込む溶湯３を一時的に貯湯するために金型本体３１に固定される。ホッパー３６に貯湯される溶湯３は、保持炉１１の溶湯２が給湯用ロボット１２の柄杓１２ａで掬われて供給される。   The hopper 36 is fixed to the mold body 31 in order to temporarily store the molten metal 3 to be cast into the cavity 34. The molten metal 3 stored in the hopper 36 is supplied by the molten metal 2 in the holding furnace 11 being rubbed by the handle 12 a of the robot 12 for hot water supply.

金型本体３１は、２個取りの鋳物製品が鋳造されるキャビティ３４と、キャビティ３４に溶湯３が鋳込まれる溶湯供給口４２と、引き巣の発生を抑制するためキャビティ３４に連通する押し湯孔３５とが設けられる。溶湯供給口４２と押し湯孔３５とは、金型が２個取りであるので、それぞれ２個配設される。尚、押し湯孔３５は、重力鋳造金型３０の傾動時、キャビティ３４の上側に位置する。   The mold body 31 includes a cavity 34 in which a two-piece casting product is cast, a molten metal supply port 42 into which the molten metal 3 is cast into the cavity 34, and a hot water communicating with the cavity 34 in order to suppress the formation of shrinkage. A hole 35 is provided. Since the molten metal supply port 42 and the pusher hole 35 have two molds, two are provided. The feeder hole 35 is located above the cavity 34 when the gravity casting mold 30 is tilted.

２個の押し湯孔３５には、押し湯孔３５の軸方向に移動可能な加圧ピン３７がそれぞれ挿入される。加圧ピン３７の一端側は、押し湯孔３５内の溶湯３に濡れ、他端側は加圧板３８にネジ込まれ、加圧板３８の動きは２本の加圧ピン３７に伝達される。   A pressure pin 37 that is movable in the axial direction of the hot water hole 35 is inserted into each of the two hot water holes 35. One end side of the pressure pin 37 gets wet with the molten metal 3 in the hot water hole 35, and the other end side is screwed into the pressure plate 38, and the movement of the pressure plate 38 is transmitted to the two pressure pins 37.

尚、加圧ピン３７と加圧板３８とは、ネジ結合で固定されるが、フレキシブルな結合でも良く、加圧板３８の動きと、自重とを加圧ピン３７に伝達できれば良い。   The pressure pin 37 and the pressure plate 38 are fixed by screw connection, but may be flexible connection as long as the movement of the pressure plate 38 and its own weight can be transmitted to the pressure pin 37.

加圧板３８の両方の端部３８ａ、３８ｂ側には、後述する加圧板止めシャッター４０が摺動する第１スライド部３８ｃが設けられる。加圧板止めシャッター４０が第１スライド部３８ｃから脱離した状態では、加圧板３８は押し湯孔３５の軸方向で、押し湯孔３５に近づく方向に移動できる。尚、第１スライド部３８ｃは、冷却装置１５へ向かう重力鋳造金型３０の移送される方向に直交する断面で、落下方向に対し押し湯孔３５に近づく方向に傾斜する。   On both end portions 38a, 38b side of the pressure plate 38, a first slide portion 38c on which a pressure plate stopper shutter 40 described later slides is provided. In a state where the pressure plate stopper shutter 40 is detached from the first slide portion 38 c, the pressure plate 38 can move in the axial direction of the hot water hole 35 in a direction approaching the hot water hole 35. In addition, the 1st slide part 38c is a cross section orthogonal to the direction where the gravity casting die 30 toward the cooling device 15 is transferred, and inclines in the direction approaching the feeder hole 35 with respect to the falling direction.

また、加圧板３８の端部３８ａの側面に加圧板ガイドピン３９（第１受力部材）が配設される。加圧板ガイドピン３９（第１受力部材）は、後述する移動式鋳造設備１０に配備した第１ガイドレール１４に当たると、第１ガイドレール１４から力を受け、加圧板３８は押し湯孔３５の軸方向で、押し湯孔３５から離れる方向に移動する。   Further, a pressure plate guide pin 39 (first force receiving member) is disposed on the side surface of the end portion 38 a of the pressure plate 38. When the pressure plate guide pin 39 (first force receiving member) hits the first guide rail 14 provided in the mobile casting equipment 10 to be described later, the pressure plate 38 receives a force from the first guide rail 14, and the pressure plate 38 has the feeder hole 35. It moves in the direction away from the feeder hole 35 in the axial direction.

加圧板止めシャッター４０は、図２の（ｂ）に於けるＺ方向（図３、図６のＸ方向）に移動可能で金型本体３１の上型３２の側面３２ａと、下型３３の側面３３ａとに亘り配備される。加圧板止めシャッター４０の両端４０ａ、４０ｂ側は第２スライド部４０ｃが設けられる。第２スライド部４０ｃは、加圧板３８の第１スライド部３８ｃが当接し、第１スライド部３８ｃに対しスライド可能である。   The pressure plate stopper shutter 40 is movable in the Z direction (X direction in FIGS. 3 and 6) in FIG. 2B, and the side surface 32 a of the upper mold 32 of the mold body 31 and the side surface of the lower mold 33. 33a. A second slide portion 40c is provided on both ends 40a and 40b of the pressure plate stopper shutter 40. The second slide portion 40c is slidable with respect to the first slide portion 38c when the first slide portion 38c of the pressure plate 38 comes into contact therewith.

また、加圧板止めシャッター４０の中央にシャッターガイドピン４１（第２受力部材）が配設され、シャッターガイドピン４１は、後述する移動式鋳造設備１０に配備した第２ガイドレール１７に当る。当ると、シャッターガイドピン４１は、第２ガイドレール１７から加圧板止めシャッター４０を動かす力を受け、加圧板止めシャッター４０は押し湯孔３５から離れる方向に移動する。この作動は、傾動、注湯終了した後、後述する押し湯工程で行われる。   Further, a shutter guide pin 41 (second force receiving member) is disposed at the center of the pressurizing plate stopper shutter 40, and the shutter guide pin 41 hits the second guide rail 17 provided in the mobile casting equipment 10 described later. When hit, the shutter guide pin 41 receives a force for moving the pressure plate stopper shutter 40 from the second guide rail 17, and the pressure plate stopper shutter 40 moves in a direction away from the hot water hole 35. This operation is performed in a hot water process described later after the end of tilting and pouring.

図３は、押し湯工程に於ける加圧板止めシャッター４０の作動の説明図である。図中、（ａ）は加圧板止めシャッター４０が移動し始める直前の状態を示す。（ｂ）は加圧板止めシャッター４０が移動中の状態を示す。加圧板止めシャッター４０がＸ方向に移動し、加圧板３８と、加圧板３８に連結した加圧ピン３７とは共に自重落下する。尚、図３は、図２の（ｂ）を９０度左回りに回転した図である。   FIG. 3 is an explanatory view of the operation of the pressure plate stopper shutter 40 in the hot water process. In the figure, (a) shows a state immediately before the pressure plate stopper shutter 40 starts to move. (B) shows a state in which the pressure plate stopper shutter 40 is moving. The pressure plate stop shutter 40 moves in the X direction, and both the pressure plate 38 and the pressure pin 37 connected to the pressure plate 38 fall by their own weight. FIG. 3 is a view obtained by rotating FIG. 2B counterclockwise by 90 degrees.

図１に示すように、移動式鋳造設備１０は、保持炉１１と、給湯用ロボット１２と、傾動装置１３と、第１ガイドレール１４と、冷却装置１５と、傾動戻し装置１６と、第２ガイドレールと、製品取出しロボット１８と、移送装置１９とから構成される。   As shown in FIG. 1, the mobile casting facility 10 includes a holding furnace 11, a hot water supply robot 12, a tilting device 13, a first guide rail 14, a cooling device 15, a tilting return device 16, and a second It comprises a guide rail, a product take-out robot 18 and a transfer device 19.

保持炉１１は、重力鋳造金型３０に鋳込む金属（例えば、アルミニウム、アルミ合金等）の溶湯２を所定の温度範囲内に保持する炉である。給湯用ロボット１２は、保持炉１１内の溶湯２を柄杓１２ａで掬い、略水平に保たれたホッパー３６に溶湯３を供給する。図４は、給湯用ロボット１２によるホッパー３６への溶湯供給が終了した状態を示す図である。図中（ａ）は上面図で、（ｂ）は（ａ）のＡ矢視図である。傾動装置１３は、給湯用ロボット１２により柄杓１２ａの溶湯３を供給した状態位置の重力鋳造金型３０を所定の角度（例えば、９０度）まで傾動し、ホッパー３６の溶湯３を溶湯供給口４２からキャビティ３４と、押し湯孔３５に重力を利用して鋳込む。図５は、傾動装置１３による重力鋳造金型３０への溶湯供給が終了した状態を示した図で、図１の傾動装置１３内の重力鋳造金型３０はこの状態を示す。図中（ａ）は上面図で、（ｂ）は（ａ）のＢ矢視図である。   The holding furnace 11 is a furnace for holding a molten metal 2 (for example, aluminum, aluminum alloy, etc.) to be cast into the gravity casting mold 30 within a predetermined temperature range. The hot water supply robot 12 scoops the molten metal 2 in the holding furnace 11 with the handle 12a, and supplies the molten metal 3 to a hopper 36 that is kept substantially horizontal. FIG. 4 is a diagram showing a state where the molten metal supply to the hopper 36 by the hot water supply robot 12 is completed. In the figure, (a) is a top view, and (b) is a view taken in the direction of arrow A in (a). The tilting device 13 tilts the gravity casting mold 30 in a state where the molten metal 3 of the handle 12a is supplied by the hot water supply robot 12 to a predetermined angle (for example, 90 degrees), and the molten metal 3 of the hopper 36 is moved to the molten metal supply port 42. Then, the cavity 34 and the feeder hole 35 are cast using gravity. FIG. 5 is a view showing a state in which the molten metal supply to the gravity casting mold 30 by the tilting device 13 is completed, and the gravity casting die 30 in the tilting device 13 of FIG. 1 shows this state. In the figure, (a) is a top view, and (b) is a view taken in the direction of arrow B in (a).

第１ガイドレール１４は、傾動装置１３から冷却装置１５へ重力鋳造金型３０を移送する駆動力を利用して押し湯作業を行うため、傾動装置１３と冷却装置１５の間に配備さる。そして第１ガイドレール１４は、シャッターガイドピン４１にスライド駆動力を与えるガイドレール部１４ａと支持部１４ｂとから構成される。ガイドレール部１４ａは、重力鋳造金型３０がＹ方向に移動すると、シャッターガイドピン４１がガイドレール部１４ａに当たる。支持部１４ｂは、ガイドレール部１４ａを所定の位置に固定するために設けられる。図６は、第１ガイドレール１４が作用し、後述する押し湯作業が終了した状態を示す。図中（ａ）は上面図で、（ｂ）は（ａ）のＣ矢視図である。   The first guide rail 14 is disposed between the tilting device 13 and the cooling device 15 in order to perform a hot water work using a driving force for transferring the gravity casting mold 30 from the tilting device 13 to the cooling device 15. The first guide rail 14 includes a guide rail portion 14 a that applies a slide driving force to the shutter guide pin 41 and a support portion 14 b. In the guide rail portion 14a, when the gravity casting mold 30 moves in the Y direction, the shutter guide pin 41 hits the guide rail portion 14a. The support portion 14b is provided to fix the guide rail portion 14a at a predetermined position. FIG. 6 shows a state in which the first guide rail 14 has acted and the hot water work described later has been completed. In the figure, (a) is a top view, and (b) is a C arrow view of (a).

冷却装置１５は、押し湯作業終了後、重力鋳造金型３０を所定の温度に冷却し、重力鋳造金型３０内の溶湯３を凝固させるために配備される。冷却中の重力鋳造金型３０の置かれる方向は、図５あるいは図６に示される配置方向と同じである。   The cooling device 15 is provided to cool the gravity casting mold 30 to a predetermined temperature after the pressurizing operation is completed and to solidify the molten metal 3 in the gravity casting mold 30. The direction in which the gravity casting mold 30 is placed during cooling is the same as the arrangement direction shown in FIG. 5 or FIG.

傾動戻し装置１６は、重力鋳造金型３０の冷却終了後、傾動装置１３により所定の角度（例えば、９０度）まで傾動した重力鋳造金型３０を、傾動装置１３よる傾動以前の重力鋳造金型３０の回転位置に傾動して戻すために配備される。   After the cooling of the gravity casting mold 30 is finished, the tilting return device 16 is configured so that the gravity casting mold 30 tilted to a predetermined angle (for example, 90 degrees) by the tilting device 13 is the gravity casting mold before the tilting by the tilting device 13. Deployed to tilt back to 30 rotational positions.

第２ガイドレール１７は、加圧板３８、加圧ピン３７、加圧板止めシャッター４０の各位置を傾動装置１３よる傾動以前の位置に戻すため、傾動戻し装置１６又は傾動戻し装置１６近傍に配備される。そして第２ガイドレール１７は、加圧板ガイドピン３９にスライド駆動力を与えるガイドレール部１７ａと、ガイドレール部１７ａを所定の位置に固定するために支持部１７ｂとから構成される。傾動戻し作業が終了すると、加圧板３８、加圧ピン３７、加圧板止めシャッター４０の各位置の戻し作業も終了する。図７は、傾動戻し装置１６による傾動と、第２ガイドレール１７の作動が行われている状態を示し、図６のＣ方向から見た図である。   The second guide rail 17 is disposed in the vicinity of the tilt return device 16 or the tilt return device 16 in order to return the positions of the pressure plate 38, the pressure pin 37, and the pressure plate stop shutter 40 to the positions before the tilt by the tilt device 13. The The second guide rail 17 includes a guide rail portion 17a for applying a slide driving force to the pressure plate guide pin 39, and a support portion 17b for fixing the guide rail portion 17a at a predetermined position. When the tilt return work is completed, the return work of each position of the pressure plate 38, the pressure pin 37, and the pressure plate stop shutter 40 is also completed. FIG. 7 shows a state where the tilt return device 16 is tilted and the second guide rail 17 is actuated, and is a view seen from the direction C in FIG.

製品取出しロボット１８は、重傾動戻し装置１６による傾動戻し作業終了後、重力鋳造金型３０を開き、凝固した鋳造製品であるワーク６を取出すために配備される。   The product take-out robot 18 is arranged to open the gravity casting mold 30 after the end of the tilt return work by the heavy tilt return device 16 and take out the workpiece 6 which is a solidified cast product.

移送装置１９は、給湯用ロボット１２による給湯及び傾動装置１３による鋳込み工程と、第１ガイドレール１４による押し湯工程と、冷却装置１５による冷却工程と、傾動戻し装置１６と第２ガイドレール１７との連携による傾動戻し工程と、製品取出しロボット１８による製品取出し工程と、次のショットに重力鋳造金型３０を送る金型搬送工程とを順次、繋ぐために設けられる。そして製品取出しロボット１８は、電動で作動するコンベア１９ａと、１９ｂと、１９ｃと、１９ｄと、１９ｅと、１９ａとを連結し、重力鋳造金型３０が循環するように構成される。   The transfer device 19 includes a hot water supply by the hot water supply robot 12 and a casting process by the tilting device 13, a hot water supplying process by the first guide rail 14, a cooling process by the cooling device 15, a tilt return device 16 and a second guide rail 17. Are provided in order to sequentially connect the tilt return process by the cooperation of the product, the product take-out process by the product take-out robot 18, and the mold transport process for sending the gravity casting mold 30 to the next shot. The product take-out robot 18 is configured to connect the conveyors 19a, 19b, 19c, 19d, 19e, and 19a that are electrically operated, and the gravity casting mold 30 circulates.

尚、図１において、重傾動戻し装置１６内の重力鋳造金型３０は、金型移動式重力鋳造設備１の上から見た図である。   In FIG. 1, the gravity casting mold 30 in the heavy tilt return device 16 is a view seen from above the mold moving gravity casting equipment 1.

次に、本発明の実施形態１の作動と効果について説明する。   Next, the operation and effect of Embodiment 1 of the present invention will be described.

金型移動式重力鋳造設備１によるワーク６の鋳造工程は、順次、鋳込み工程と、押し湯工程と、冷却工程と、傾動戻し工程と、製品取出し工程と、金型搬送工程とから形成される。図４から図７は、一連の鋳造工程の状態を示す。   The casting process of the workpiece 6 by the mold moving gravity casting equipment 1 is sequentially formed by a casting process, a hot water process, a cooling process, a tilt return process, a product take-out process, and a mold conveying process. . 4 to 7 show a state of a series of casting processes.

（鋳込み工程）保持炉１１内の溶湯２を給湯用ロボット１２の柄杓１２ａで掬い、略水平に保たれたホッパー３６に供給する（図４）。その後、図５に示すように、加圧板止めシャッター４０で加圧板３８の自重落下を阻止ししつつ、傾動装置１３を作動させ、重力鋳造金型３０を所定の角度（例えば、９０度）まで傾動し、重力によりホッパー３６内の溶湯３を重力鋳造金型３０の溶湯供給口４２からキャビティ３４と、押し湯孔３５に鋳込む。   (Casting process) The molten metal 2 in the holding furnace 11 is scooped by the handle 12a of the hot water supply robot 12 and supplied to the hopper 36 kept substantially horizontal (FIG. 4). After that, as shown in FIG. 5, the tilting device 13 is operated while preventing the pressure plate 38 from falling by its own pressure with the pressure plate stop shutter 40, and the gravity casting mold 30 is moved to a predetermined angle (for example, 90 degrees). Tilt and cast the molten metal 3 in the hopper 36 from the molten metal supply port 42 of the gravity casting mold 30 into the cavity 34 and the feeder hole 35 by gravity.

（押し湯工程）鋳込み工程終了後、図１、図６に示すように、重力鋳造金型３０がコンベア１９ａに載せられＹ方向に移動し、加圧板止めシャッター４０のシャッターガイドピン４１が第１ガイドレール１４のガイドレール部１４ａに当たる。引続き、重力鋳造金型３０が移動する力により、シャッターガイドピン４１は第１ガイドレール１４に沿って移動する。シャッターガイドピン４１の移動により、第１スライド部３８ｃに当接している第２スライド部４０ｃは、第１スライド部３８ｃをスライドしながらＸ方向に移動し（図３）、第１スライド部３８ｃから脱離する。第２スライド部４０ｃが、第１スライド部３８ｃをスライドすると加圧板３８及び加圧ピン３５が重力の作用で徐々に落下し、第１スライド部３８ｃから脱離すると加圧板３８及び加圧ピン３５は一気に落下する。この時、加圧ピン３５と加圧板３８の合計重量が重力鋳造金型３０内の溶湯３に作用して加圧され、湯作業がなされ、キャビティ３４内の引け巣発生が抑制される。加圧板３８の底面３８ｄと下型３３の側面３３ａに隙間を生じ、重力鋳造金型３０内の溶湯３が加圧ピン３５と加圧板３８の合計重量を支える。   (Push-up process) After completion of the casting process, as shown in FIGS. 1 and 6, the gravity casting mold 30 is placed on the conveyor 19a and moves in the Y direction, and the shutter guide pin 41 of the pressure plate stopper shutter 40 is the first. It hits the guide rail portion 14a of the guide rail 14. Subsequently, the shutter guide pin 41 moves along the first guide rail 14 by the force of the gravity casting mold 30 moving. Due to the movement of the shutter guide pin 41, the second slide part 40c that is in contact with the first slide part 38c moves in the X direction while sliding the first slide part 38c (FIG. 3), and from the first slide part 38c. Detach. When the second slide portion 40c slides on the first slide portion 38c, the pressure plate 38 and the pressure pin 35 gradually drop due to the action of gravity, and when detached from the first slide portion 38c, the pressure plate 38 and the pressure pin 35 Falls at once. At this time, the total weight of the pressure pin 35 and the pressure plate 38 acts on the molten metal 3 in the gravity casting mold 30 to be pressurized, and the hot water operation is performed, and the generation of shrinkage cavities in the cavity 34 is suppressed. A gap is formed between the bottom surface 38 d of the pressure plate 38 and the side surface 33 a of the lower mold 33, and the molten metal 3 in the gravity casting mold 30 supports the total weight of the pressure pin 35 and the pressure plate 38.

ガイドレール部１４ａがシャッターガイドピン４１に当たるとシャッターガイドピン４１は、ガイドレール部１４ａに対して加圧板３８から離れるＸ方向と、重力鋳造金型３０が移動するＹ方向と、に移動する。シャッターガイドピン４１は、加圧板３８から離れるＸ方向（図２のＺ方向）にも移動するようＹ方向に対して傾斜する。即ち、シャッターガイドピン４１が加圧板３８から離れるＸ方向と、ガイドレール部１４ａとの角度αは、９０度より大きく１８０度より小さくなるよう設定される。   When the guide rail portion 14a hits the shutter guide pin 41, the shutter guide pin 41 moves in the X direction away from the pressure plate 38 with respect to the guide rail portion 14a and the Y direction in which the gravity casting mold 30 moves. The shutter guide pin 41 is inclined with respect to the Y direction so as to move also in the X direction (the Z direction in FIG. 2) away from the pressure plate 38. That is, the angle α between the X direction in which the shutter guide pin 41 is separated from the pressure plate 38 and the guide rail portion 14a is set to be larger than 90 degrees and smaller than 180 degrees.

（冷却工程）押し湯作業終了後、冷却装置１５で重力鋳造金型３０及び重力鋳造金型３０内の溶湯３を所定の温度に冷却し、溶湯３を凝固させる。   (Cooling process) After the hot metal operation is completed, the cooling device 15 cools the gravity casting mold 30 and the molten metal 3 in the gravity casting mold 30 to a predetermined temperature, and solidifies the molten metal 3.

（傾動戻し工程）傾動戻し装置１６により、傾動装置１３よる傾動以前の重力鋳造金型３０の回転配置に傾動して戻す。また、この戻し傾動の回転力と、重力を利用して、加圧板ガイドピンを第２ガイドレール１７当てることにより加圧板止めシャッター４０、加圧板３８、加圧ピン３７を傾動装置１３よる傾動以前の位置に戻す（図７）。即ち、重力鋳造金型３０の傾動戻し途中、重力鋳造金型３０の加圧板ガイドピン３９は、第２ガイドレール１７のガイドレール部１７ａに当たる。加圧板ガイドピン３９は、重力鋳造金型３０の傾動よる回転力を受け、第２ガイドレール１７のガイドレール部１７ａに沿って移動する。この移動により、加圧板３８と上型３２の側面３２ａとの間の間隙Ｈは拡がり、加圧板止めシャッター４０は、自重落下し、間隙Ｈを通って第２スライド部４０ｃが第１スライド部３８ｃをスライドしながら加圧板３８の第１スライド部３８ｃに当接される。   (Tilt return step) The tilt return device 16 tilts and returns to the rotational arrangement of the gravity casting mold 30 before the tilt by the tilt device 13. Further, the pressure plate guide pin is applied to the second guide rail 17 by using the rotational force of the return tilt and gravity, so that the pressure plate stop shutter 40, the pressure plate 38, and the pressure pin 37 are not tilted by the tilt device 13. Return to the position (FIG. 7). That is, the pressure plate guide pin 39 of the gravity casting mold 30 hits the guide rail portion 17 a of the second guide rail 17 while the gravity casting mold 30 is tilted back. The pressure plate guide pin 39 receives the rotational force due to the tilt of the gravity casting mold 30 and moves along the guide rail portion 17 a of the second guide rail 17. By this movement, the gap H between the pressure plate 38 and the side surface 32a of the upper mold 32 is expanded, the pressure plate stop shutter 40 falls by its own weight, and the second slide portion 40c passes through the gap H and the first slide portion 38c. Is brought into contact with the first slide portion 38 c of the pressure plate 38.

ガイドレール部１７ａは、戻し傾動の回転方向下がりに傾斜している。即ち、重力鋳造金型３０が移動する図示のＷ方向とガイドレール部１７ａが形成する角度βは重力鋳造金型３０が傾動される回転方向Ｒに鋭角である。   The guide rail portion 17a is inclined downward in the rotational direction of the return tilt. That is, an angle β formed by the W direction in which the gravity casting mold 30 moves and the guide rail portion 17a is formed is an acute angle in a rotation direction R in which the gravity casting mold 30 is tilted.

（製品取出し工程）傾動戻し工程終了後、重力鋳造金型３０を開き、製品取出しロボット１８で凝固したワーク６を取出す。   (Product Extraction Process) After the tilt return process is completed, the gravity casting mold 30 is opened, and the solidified workpiece 6 is extracted by the product extraction robot 18.

（金型搬送工程）ワーク６が取出された重力鋳造金型３０をコンベア１９ｅに載せ、次のショットの鋳込み工程に搬送する。この工程において重力鋳造金型３０は、重力鋳造金型３０の回転配置と、加圧板止めシャッター４０、加圧板３８、加圧ピン３７の位置とが、重力鋳造金型３０の傾動装置１３による傾動以前の状態に戻り、キャビティ３４もワーク６が取出された空の状態になる。   (Mold Conveying Step) The gravity casting die 30 from which the workpiece 6 has been taken out is placed on the conveyor 19e and conveyed to the casting process of the next shot. In this process, the gravity casting mold 30 is tilted by the tilting device 13 of the gravity casting mold 30 so that the rotational arrangement of the gravity casting mold 30 and the positions of the pressure plate stopper shutter 40, the pressure plate 38 and the pressure pin 37 are adjusted. Returning to the previous state, the cavity 34 is also in an empty state from which the workpiece 6 has been taken out.

以上により、押し湯作業は、移送装置による重力鋳造金型３０を移動させる力と、傾動戻し装置１６による重力鋳造金型３０を回転させる回転力と、重力を利用して行われので、従来技術のピストン・シリンダーによる加圧装置及び加圧装置用制御装置が不要となり、従来技術に比べて設備費が安く、消費エネルギーの少ない金型移動式重力鋳造設備１を提供できる。   As described above, the hot water work is performed using the force that moves the gravity casting mold 30 by the transfer device, the rotational force that rotates the gravity casting mold 30 by the tilt return device 16, and the gravity. The pressurizing device using the piston and cylinder and the control device for the pressurizing device are unnecessary, and the die moving type gravity casting equipment 1 can be provided with a lower equipment cost and less energy consumption as compared with the prior art.

また、加圧ピン３７と加圧板３８の重量を使って押し湯を行うので、高品質で、歩留まりが高く、凝固時間の短い、ワーク６を鋳造可能な金型移動式重力鋳造設備１を提供できる。   In addition, since the hot water is pressed using the weight of the pressure pin 37 and the pressure plate 38, the die moving gravity casting equipment 1 capable of casting the workpiece 6 with high quality, high yield and short solidification time is provided. it can.

また、加圧ピン３７が落下して、重力鋳造金型３０内の溶湯３を加圧する圧力は、加圧ピン３７の重量と、加圧板３８の重量で、重力鋳造金型３０およびワーク６に適した圧力に調整でき、押し湯能力が向上する。結果、キャビティ３４の引け巣発生の抑制が向上し、高品質で、歩留まりが高く、凝固時間の短い、ワーク６を鋳造可能な金型移動式重力鋳造設備１提供できる。尚、加圧力は、加圧ピン３７重量と加圧板３０の重量の合計重量を加圧ピン３７の加圧方向に直交する断面積で割った値となる。   The pressure at which the pressure pin 37 falls and pressurizes the molten metal 3 in the gravity casting mold 30 is applied to the gravity casting mold 30 and the workpiece 6 by the weight of the pressure pin 37 and the weight of the pressure plate 38. The pressure can be adjusted to a suitable pressure, and the hot water capacity is improved. As a result, the suppression of shrinkage cavities in the cavity 34 is improved, and the die moving gravity casting equipment 1 capable of casting the workpiece 6 with high quality, high yield, and short solidification time can be provided. The applied pressure is a value obtained by dividing the total weight of the pressure pin 37 and the pressure plate 30 by the cross-sectional area perpendicular to the pressure direction of the pressure pin 37.

さらに、加圧ピン３７による押し湯の加圧タイミングは、第１ガイドレール１４が傾動装置１３と冷却装置１５との間に配備される位置を調整して、引け巣発生を最も効果的に抑制する押し湯の加圧タイミングを決定できるので、押し湯能力が向上する。結果、引け巣発生の抑制が向上し、高品質で、歩留まりが高く、凝固時間の短い、ワーク６を鋳造可能な金型移動式重力鋳造設備１を提供できる。   Furthermore, the pressurizing timing of the hot water by the pressurizing pin 37 adjusts the position where the first guide rail 14 is disposed between the tilting device 13 and the cooling device 15 to most effectively suppress the occurrence of shrinkage nests. Since the pressurizing timing of the hot water to be determined can be determined, the hot water capacity is improved. As a result, it is possible to provide a mold-movable gravity casting facility 1 capable of casting the workpiece 6 with improved suppression of shrinkage nest, high quality, high yield, and short solidification time.

（実施形態２）
図８は、本発明の実施形態に係わる重力鋳造金型の断面の一部で、加圧ピンと加圧板を中心として示した図である。実施形態２の重力鋳造金型は、加圧ピンを除き他の部品、部位は図２の重力鋳造金型３０と同じで、同じ部品、部位は同じ符号を付す。 (Embodiment 2)
FIG. 8 is a part of a cross section of the gravity casting mold according to the embodiment of the present invention, and shows a pressing pin and a pressing plate as the center. The gravity casting mold of the second embodiment is the same as the gravity casting mold 30 of FIG. 2 except for the pressure pin, and the same parts and parts are denoted by the same reference numerals.

加圧ピン５０は、押し湯孔３５の溶湯３を加圧する加圧ピンヘッド５１が連結部材５２にネジ込まれ構成される。加圧ピンヘッド５１は、材質がセラミックまたは耐熱強化ガラスなどの熱伝導率の低い材料からなり、大径部５１ａと、大径部５１ａより小径で雄ネジを有する小径部５１ｂとからなる。連結部材５２は、ステンレス等の合金鋼からなり、一端側に加圧ピンヘッド５１の雄ネジが結合される雌ネジと、他端は加圧板３８にネジ込まれる雄ネジとが設けられる。   The pressurizing pin 50 is configured by screwing a pressurizing pin head 51 that pressurizes the molten metal 3 in the hot metal hole 35 into a connecting member 52. The pressure pin head 51 is made of a material having a low thermal conductivity such as ceramic or heat-resistant tempered glass, and includes a large-diameter portion 51a and a small-diameter portion 51b having a smaller diameter and a male screw than the large-diameter portion 51a. The connecting member 52 is made of alloy steel such as stainless steel, and is provided with a female screw to which the male screw of the pressure pin head 51 is coupled at one end side and a male screw to be screwed into the pressure plate 38 at the other end.

加圧ピンヘッド５１の材質は、金属より熱伝導率が低く、体積当たりの熱容量の小さいセラミックと、耐熱ガラスである。従って、加圧ピンヘッド５１に濡れる溶湯３から加圧ピンヘッド５１を介在して連結部材５２より外部に放出される熱は金属に比べて減少する。また、加圧ピンヘッド５１が溶湯３で加熱される熱量は金属に比べて減少する。結果、加圧ピン５０で押し湯をする際、キャビティ３４内の溶湯３の指向性凝固が抑制され、引け巣発生の抑制が向上し、歩留まりの高いワーク６を鋳造できる。   The material of the pressure pin head 51 is ceramic and heat-resistant glass having lower thermal conductivity than metal and a small heat capacity per volume. Therefore, the heat released from the connecting member 52 to the outside from the molten metal 3 that gets wet with the pressure pin head 51 via the pressure pin head 51 is reduced compared to the metal. Further, the amount of heat by which the pressure pin head 51 is heated by the molten metal 3 is reduced as compared with the metal. As a result, when hot metal is pressed with the pressure pin 50, the directional solidification of the molten metal 3 in the cavity 34 is suppressed, the suppression of shrinkage nest generation is improved, and the workpiece 6 with a high yield can be cast.

また、加圧ピン５０は、溶湯が濡れるヘッドだけセラミック又は耐熱ガラスであるので、加圧ピン５０全体がセラミック又は耐熱ガラスである場合に比べてコスト安くなるので、金型移動式重力鋳造設備１のコストが安くなる。   In addition, since the pressure pin 50 is made of ceramic or heat-resistant glass only in the head where the molten metal gets wet, the cost is lower than the case where the entire pressure pin 50 is made of ceramic or heat-resistant glass. The cost of

重力鋳造金型３０が１個取りの金型である場合、押し湯孔３５は一箇所あれば良い。この場合、加圧ピン３７を押し湯孔３５の内周面に三箇所、線接触させることで加圧ピン３７は、押し湯孔３５に抉ることなくスムーズにほぼ鉛直方向に落下でき、加圧ピン３７による安定した押し湯作業が可能となる。結果、引け巣発生の抑制が向上し、歩留まりの高いワーク６を鋳造可能な金型移動式重力鋳造設備を１提供できる。また、金型移動式重力鋳造設備１の信頼性が向上する。   In the case where the gravity casting mold 30 is a single die, there is only one place for the feeder hole 35. In this case, the pressure pin 37 can be smoothly dropped in a substantially vertical direction without entering the hot water hole 35 by bringing the pressure pin 37 into line contact with the inner peripheral surface of the hot water hole 35 and pressing. Stable hot water work by the pin 37 is possible. As a result, suppression of shrinkage nest generation is improved, and one mold moving gravity casting facility capable of casting a workpiece 6 having a high yield can be provided. Further, the reliability of the mold moving gravity casting equipment 1 is improved.

（実施形態３）
図９は、本発明の実施形態に係わる重力鋳造金型の断面の一部で、押し湯孔および加圧ピンを中心として示した図である。実施形態３の重力鋳造金型は、加圧ピンを除き他の部品、部位は図２の重力鋳造金型３０と同じで、同じ部品、部位は同じ符号を付す。 (Embodiment 3)
FIG. 9 is a view showing a part of a cross section of the gravity casting mold according to the embodiment of the present invention, centering on the feeder hole and the pressure pin. The gravity casting mold of Embodiment 3 is the same as the gravity casting mold 30 of FIG. 2 except for the pressure pin, and the same parts and parts are denoted by the same reference numerals.

押し湯孔５５は、複数個（実施例では２個）設けられ、各々の押し湯孔５５が配列される方向の長さＤが配列方向に直交する方向の長さｄより長い長穴形状である。加圧ピン５６は、押し湯孔５５の軸方向に移動可能に挿入され、断面が略四角で角部にＲが設けられる。加圧ピン５６の略四角の断面は、押し湯孔５５の長穴の断面より小さく、各々の加圧ピン５６は、押し湯孔５５に３箇所（例えば、Ｐ１、Ｐ２、Ｐ３）、線接触する。   A plurality (two in the embodiment) of the feeder holes 55 are provided, and the length D in the direction in which the feeder holes 55 are arranged is longer than the length d in the direction perpendicular to the arrangement direction. is there. The pressure pin 56 is inserted so as to be movable in the axial direction of the feeder hole 55, and has a substantially square cross section and is provided with an R at the corner. The substantially square cross section of the pressurizing pin 56 is smaller than the cross section of the elongated hole of the feeder hole 55, and each of the pressurizing pins 56 is in contact with the feeder hole 55 at three locations (for example, P1, P2, P3) and line contact. To do.

また、２個の押し湯孔５５を挟んで溶湯供給口４２が設けられる。   In addition, a molten metal supply port 42 is provided with the two feeder holes 55 interposed therebetween.

鋳造時、重力鋳造金型３０は高温（例えば、略６００度）になり、熱膨張し、押し湯孔５５間の距離も熱膨張により増大する。一方、加圧板３８は常温雰囲気にあるにで、加圧ピン５６間の距離は、殆ど熱膨張しない。従って、押し湯孔５５間の距離と加圧ピン５６間の距離は、熱膨張の影響により差異が生じるが、押し湯孔５５は押し湯孔５５間の距離方向に長穴であるので、加圧ピン５６は押し湯孔５５に抉ることなくスムーズにほぼ鉛直方向に落下できるので、加圧ピン５６による安定した押し湯作業が可能となる。結果、引け巣発生の抑制が向上し、高品質で、歩留まりの高いワーク６を鋳造可能な金型移動式重力鋳造設備１を提供できる。また、金型移動式重力鋳造設備１の信頼性が向上する。   At the time of casting, the gravity casting mold 30 becomes high temperature (for example, approximately 600 degrees) and thermally expands, and the distance between the feeder holes 55 also increases due to the thermal expansion. On the other hand, since the pressure plate 38 is in a normal temperature atmosphere, the distance between the pressure pins 56 hardly thermally expands. Accordingly, the distance between the feeder holes 55 and the distance between the pressure pins 56 are different due to the effect of thermal expansion, but the feeder holes 55 are elongated in the distance direction between the feeder holes 55. Since the pressure pin 56 can smoothly fall in the substantially vertical direction without entering the hot water hole 55, a stable hot water work by the pressure pin 56 can be performed. As a result, the suppression of shrinkage nests is improved, and the mold moving gravity casting equipment 1 capable of casting the work 6 with high quality and high yield can be provided. Further, the reliability of the mold moving gravity casting equipment 1 is improved.

尚、押し湯孔は、３個以上設けられる場合は、隣り合う押し湯孔のうち配置距離の長い方向に長孔すれば、上述の作用により、同様の効果が発生する。   In addition, when three or more feeder holes are provided, the same effect can be obtained by the above-described operation if they are elongated in the direction in which the arrangement distance is long among the adjacent feeder holes.

本発明の実施形態１に係わる金型移動式重力鋳造設備の説明図である。It is explanatory drawing of the metal mold | die movable gravity casting installation concerning Embodiment 1 of this invention. 本発明の実施形態１に係わる重力鋳造金型の説明図である。It is explanatory drawing of the gravity casting metal mold | die concerning Embodiment 1 of this invention. 本発明の実施形態１に係わる加圧板止めシャッターの作動の説明図である。It is explanatory drawing of the action | operation of the pressurization plate stop shutter concerning Embodiment 1 of this invention. 本発明の実施形態１に係わる給湯用ロボットよる給湯終了状態を示す図である。It is a figure which shows the hot water supply completion state by the hot water supply robot concerning Embodiment 1 of this invention. 本発明の実施形態１に係わる傾動装置による鋳込み終了状態を示す図である。It is a figure which shows the casting completion state by the tilting apparatus concerning Embodiment 1 of this invention. 本発明の実施形態１に係わる押し湯終了状態状態を示す図である。It is a figure which shows the hot water end state concerning Embodiment 1 of this invention. 本発明の実施形態１に係わる傾動戻し装置による傾動戻し中の状態を示す図である。It is a figure which shows the state in the middle of the tilting return by the tilting return apparatus concerning Embodiment 1 of this invention. 本発明の実施形態２に係わる重力鋳造金型の断面の一部を示す説明図である。It is explanatory drawing which shows a part of cross section of the gravity casting mold concerning Embodiment 2 of this invention. 本発明の実施形態３に係わる重力鋳造金型の断面の一部を示す説明図である。It is explanatory drawing which shows a part of cross section of the gravity casting mold concerning Embodiment 3 of this invention.

符号の説明Explanation of symbols

１ 金型移動式鋳造設備
３ 溶湯
１０ 移動式鋳造設備
１３ 傾動装置
１４ 第１ガイドレール
１５ 冷却装置
１６ 傾動戻し装置
１７ 第２ガイドレール
１９ 移送装置
３０ 重力鋳造金型
３２ 上型
３３ 下型
３４ キャビティ
３５、５５ 押し湯孔
３７、５０、５６ 加圧ピン
３８ 加圧板
３８ｃ 第１スライド部
３９ 加圧板ガイドピン（第１受力部材）
４０ 加圧板止めシャッター
４０ｃ 第２スライド部
４１ シャッターガイドピン（２受力部材）
５１ 加圧ピンヘッド
５２ 連結部材 DESCRIPTION OF SYMBOLS 1 Mold moving casting equipment 3 Molten metal 10 Mobile casting equipment 13 Tilt device 14 1st guide rail 15 Cooling device 16 Tilt return device 17 2nd guide rail 19 Transfer device 30 Gravity casting die 32 Upper die 33 Lower die 34 Cavity 35, 55 Pressurizing hole 37, 50, 56 Pressure pin 38 Pressure plate 38c First slide part 39 Pressure plate guide pin (first force receiving member)
40 Pressing plate stopper shutter 40c Second slide portion 41 Shutter guide pin (two force receiving members)
51 Pressure pin head 52 Connecting member

Claims (6)

溶湯が供給される重力鋳造金型と、前記重力鋳造金型を循環させて鋳造を行う移動式鋳造設備と、を備える金型移動式重力鋳造設備であって、
前記重力鋳造金型を傾動し前記重力鋳造金型に前記溶湯を注湯する傾動装置と、
前記重力鋳造金型を冷却して注湯された前記溶湯を凝固させる冷却装置と、
傾動した前記重力鋳造金型を元の回転位置に戻す傾動戻し装置と、
前記傾動装置と、前記冷却装置と、前記傾動戻し装置との間を連結して前記重力鋳造金型を移送する移送装置と、
前記傾動装置冷却装置との間に配設される第１ガイドレールと、
前記傾動戻し装置又は前記傾動戻し装置に配設される第２ガイドレールとを備え、
前記重力鋳造金型は、
該重力鋳造金型の内部で鋳造品を形成するキャビティを有し、
該キャビティの一方を形成する上型と、
該上型と当接して前記キャビティの他方を形成する下型と、
前記上型と前記下型が当接したときに前記キャビティを前記重力鋳造金型の外部と連通させる押し湯孔を有し、
該押し湯孔には内部を進退自在に動く加圧ピンと、
前記加圧ピンの端部に一体に固着された加圧板と、
前記上型に配設され前記上型の側面を進退自在に動くシャッターとを有し、
前記加圧板は、前記加圧ピンとの固着面に第１スライド部を有し、
前記シャッターは、該第１スライド部との当接面に第２スライド部を有し、
更に、前記加圧板に固着され、前記加圧ピンの進退方向と直行方向に延在する第１受力部材と、
前記シャッターに固着され、前記加圧ピンの進退方向と同軸方向に延在する第２受力部材とを有し、
前記移送装置で前記重力鋳造金型を前記傾動装置から前記冷却装置に移送する途中、前記第２受力部材は前記第１ガイドレールに当接して、前記第１ガイドレールは前記加圧板止めシャッターを前記加圧板から離れる方向にスライドさせ、前記加圧板を落下させて前記第２スライド部を第１スライド部から脱離させ、
前記傾動戻し装置で前記重力鋳造金型を傾動戻し途中、前記第１受力部材は前記第２ガイドレールに当接して、前記第２ガイドレールは前記加圧板を前記押し湯孔から離れる方向に移動させ、前記加圧板止めシャッターを落下させて第２スライド部を前記第１スライド部に当接させる、ことを特徴とする金型移動式重力鋳造設備。 A mold moving gravity casting equipment comprising: a gravity casting mold to which molten metal is supplied; and a mobile casting equipment for performing casting by circulating the gravity casting mold,
A tilting device for tilting the gravity casting mold and pouring the molten metal into the gravity casting mold;
A cooling device that solidifies the molten metal poured by cooling the gravity casting mold;
A tilt return device for returning the tilted gravity casting mold to its original rotational position;
A transfer device for transferring the gravity casting mold by connecting the tilt device, the cooling device, and the tilt return device;
A first guide rail disposed between the tilting device cooling device;
The tilt return device or a second guide rail disposed on the tilt return device,
The gravity casting mold is
Having a cavity for forming a casting within the gravity casting mold;
An upper mold forming one of the cavities;
A lower die that contacts the upper die and forms the other of the cavities;
A hot water hole for communicating the cavity with the outside of the gravity casting mold when the upper mold and the lower mold are in contact with each other;
In the feeder hole, a pressure pin that moves inside and out freely,
A pressure plate integrally fixed to an end of the pressure pin;
A shutter that is disposed on the upper mold and moves in a reciprocating manner on a side surface of the upper mold;
The pressure plate has a first slide portion on a fixing surface with the pressure pin,
The shutter has a second slide portion on a contact surface with the first slide portion,
Further, a first force receiving member fixed to the pressure plate and extending in the forward / backward direction and the orthogonal direction of the pressure pin,
A second force receiving member fixed to the shutter and extending in a direction coaxial with the advancing and retreating direction of the pressure pin;
During the transfer of the gravity casting mold from the tilting device to the cooling device by the transfer device, the second force receiving member abuts on the first guide rail, and the first guide rail is the pressure plate stop shutter. Slide in the direction away from the pressure plate, drop the pressure plate to detach the second slide portion from the first slide portion,
While the gravity casting mold is being tilted back by the tilt return device, the first force receiving member contacts the second guide rail, and the second guide rail moves the pressure plate away from the feeder hole. A die moving gravity casting facility, wherein the die moving gravity casting equipment is moved, and the second slide part is brought into contact with the first slide part by dropping the pressure plate stopper shutter. 前記圧力ピンによる押し湯の加圧力は、前記加圧ピンの重量と、前記加圧板の重量で調整する、ことを特徴とする請求項１に記載の金型移動式重力鋳造設備。 The mold moving gravity casting equipment according to claim 1, wherein the pressurizing force of the hot water by the pressure pin is adjusted by the weight of the pressure pin and the weight of the pressure plate. 前記加圧ピンの前記押し湯による加圧タイミングは、前記第１ガイドレールが前記傾動装置と前記冷却装置との間に配備される位置で調整する、ことを特徴とする請求項１又は２のいずれかに記載の金型移動式重力鋳造設備。 The pressurizing timing of the pressurizing pin by the hot water is adjusted at a position where the first guide rail is disposed between the tilting device and the cooling device. Mold moving gravity casting equipment according to any one of the above. 前記加圧ピンは、前記重力鋳造金型の前記溶湯を加圧するセラミック又は耐熱ガラスいずれかの材質の加圧ピンヘッドと、一端が前記加圧ピンヘッドに連結され他端が前記加圧板に連結される連結部材と、を備える、ことを特徴とする請求項１乃至３のいずれかに記載の金型移動式重力鋳造設備。 The pressure pin includes a pressure pin head made of either ceramic or heat-resistant glass for pressing the molten metal of the gravity casting mold, one end connected to the pressure pin head, and the other end connected to the pressure plate. The die moving gravity casting equipment according to any one of claims 1 to 3, further comprising a connecting member. 前記加圧ピンは前記押し湯孔の内周面に３箇所、線接触する、ことを特徴とする請求項１乃至４のいずれかに記載の金型移動式重力鋳造設備。 The die moving gravity casting equipment according to any one of claims 1 to 4, wherein the pressurizing pins are in line contact with the inner peripheral surface of the feeder hole at three locations. 前記押し湯孔は、複数個設けられ、隣り合う押し湯孔のうち配置距離の長い方向に長孔である、ことを特徴とする請求項１乃至５のいずれかに記載の金型移動式重力鋳造設備。 The mold moving gravity according to any one of claims 1 to 5, wherein a plurality of the feeder holes are provided and are elongated holes in a direction in which an arrangement distance is long among adjacent feeder holes. Casting equipment.

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