JP6357019B2 - Gravity casting apparatus and gravity casting method - Google Patents
Gravity casting apparatus and gravity casting method Download PDFInfo
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Description
本発明は、複雑な形状の製品であっても湯回り性よく鋳造が可能な重力鋳造装置および重力鋳造方法に関する。 The present invention relates to a gravity casting apparatus and a gravity casting method capable of casting a product having a complicated shape with good hot water performance.
重力鋳造において、湯回り不良等をなくし、製品の複雑化、大型化などに対して適切に対応するため、例えば特許文献１のものでは、回転機構と竪傾動機構とを備えた重力鋳造装置を用いている。
さらに詳しくは、この特許文献１の重力鋳造装置は、型開閉する待機位置において、上下方向に型開閉する型締機構と、この型締機構を、成形型の金型中心を通る回転軸（すなわち、待機位置において鉛直軸）を中心に回転させる回転機構と、型締機構を、水平回転軸を中心に傾動させる竪傾動機構を備えている。
この特許文献１における重力鋳造装置は、２軸回転機構を備えているので、成形型を３次元内において任意の位置に停止させ、または移動させつつ注湯することができ、湯回り性を改善して、鋳巣のない品質の良好な鋳造品を得ることができる。
In gravity casting, in order to eliminate poor hot water and the like, and to appropriately cope with the complication and enlargement of products, for example, in Patent Document 1, a gravity casting apparatus provided with a rotation mechanism and a heel tilt mechanism is used. Used.
More specifically, the gravity casting apparatus disclosed in Patent Document 1 includes a mold clamping mechanism that opens and closes in a vertical direction at a standby position for opening and closing the mold, and a rotary shaft that passes through the mold center of the mold (ie, the mold clamping mechanism). A rotation mechanism that rotates the vertical axis at the standby position, and a heel tilt mechanism that tilts the mold clamping mechanism about the horizontal rotation axis.
Since the gravity casting apparatus in Patent Document 1 includes a two-axis rotation mechanism, it is possible to pour hot water while stopping or moving the molding die at an arbitrary position in three dimensions, thereby improving hot water performance. Thus, it is possible to obtain a cast product having a good quality without a casting hole.
しかしながら、特許文献１に示されている重力鋳造装置は、次のような課題を有している。
すなわち、特許文献１に示される重力鋳造装置は、上記のように、待機位置において、上下方向に型開閉する型締機構を備えているため、待機位置においては、成形型はパーティング面が水平方向を向いている。重力鋳造法であるから、注湯開始時には、湯口が上部位置となるように、竪傾動機構により、型締機構（成形型）を傾動させる必要がある。また、湯口を注湯装置に位置合わせするために、回転機構によって、型締機構（成形型）を所要位置にまで回転させる必要がある。
However, the gravity casting apparatus shown in Patent Document 1 has the following problems.
That is, since the gravity casting apparatus shown in Patent Document 1 includes the mold clamping mechanism that opens and closes the mold in the vertical direction at the standby position as described above, the parting surface of the molding die is horizontal at the standby position. Facing the direction. Since it is a gravity casting method, it is necessary to tilt the mold clamping mechanism (molding die) by the heel tilting mechanism so that the pouring gate is at the upper position at the start of pouring. Further, in order to align the pouring gate with the pouring device, it is necessary to rotate the mold clamping mechanism (molding die) to a required position by the rotating mechanism.
したがって、この従来型の重力鋳造装置では、注湯装置の位置によって制約され、注湯開始時における成形型の向き（パーティング面、もしくはキャビティ面の向き）が自在に設定できないという課題がある。このため、例えば複雑な形状の製品の場合、湯回り性を改善できない不具合がある。 Therefore, the conventional gravity casting apparatus is restricted by the position of the pouring device, and there is a problem that the direction of the mold (parting surface or cavity surface) at the start of pouring cannot be set freely. For this reason, for example, in the case of a product having a complicated shape, there is a problem that the hot water resistance cannot be improved.
本発明は、上記課題を解決すべくなされたものであり、その目的とするところは、複雑な形状の製品であっても、湯回り性を改善でき、品質の良好な鋳造品を得ることのできる重力鋳造装置および重力鋳造方法を提供することにある。 The present invention has been made in order to solve the above-mentioned problems, and the object of the present invention is to improve the hot water performance even with a complex shape product, and to obtain a cast product with good quality. An object of the present invention is to provide a gravity casting apparatus and a gravity casting method.
本発明は上記目的を達成するため、次の構成を備える。
すなわち、本発明に係る重力鋳造装置は、水平回転軸を中心に回転自在に設けられた第１の回転体と、該第１の回転体上に、前記水平回転軸と直角をなし、回転軸を中心に回転自在に設けられ、前記水平回転軸を中心に傾動される第２の回転体と、該第２の回転体上に固定され、待機位置において、水平方向に開閉する型開閉機構と、前記待機位置において、湯口が上側に位置するように前記型開閉機構に取り付けられる成形型を具備することを特徴とする。
In order to achieve the above object, the present invention comprises the following arrangement.
That is, gravity casting apparatus according to the present invention includes a first rotating body provided rotatably around a horizontal rotation axis, on the first rotary member, to name the horizontal shaft perpendicular rotation axis rotatably provided et al is mainly, the second rotating body to be tilted about a horizontal rotational axis, is fixed on the rotating body of the second, in the standby position, the mold closing for opening and closing in the horizontal direction And a mold that is attached to the mold opening / closing mechanism so that the gate is located at the upper side at the standby position .
また本発明に係る重力鋳造方法は、上記いずれかの重力鋳造装置を用いる重力鋳造方法であって、前記第１の回転体および第２の回転体を回転させて、前記型開閉機構に取り付けられた成形型を、パーティング面が鉛直方向を向く注湯開始位置に位置合わせする工程と、前記湯口に溶湯を供給しながら、前記第１の回転体を回転させて、前記型開閉機構に取り付けられた成形型が徐々に水平方向を向くように移動させて溶湯を凝固させる注湯工程を具備することを特徴とする。
前記注湯工程の後、前記第２の回転体を回転させて前記型開閉機構を前記待機位置に移動させ、型開して凝固した鋳造品を取り出すようにすることができる。
前記注湯工程において、注湯中に前記成形型を振動させ、注湯終了後に振動を停止するようにすると好適である。
The gravity casting method according to the present invention is a gravity casting method using any one of the above-described gravity casting apparatuses, and is attached to the mold opening / closing mechanism by rotating the first rotating body and the second rotating body. Positioning the mold to the pouring start position where the parting surface faces in the vertical direction, and rotating the first rotating body while supplying the molten metal to the gate, and attaching the mold to the mold opening / closing mechanism It is characterized by comprising a pouring step of solidifying the molten metal by moving the formed mold gradually in the horizontal direction.
After the pouring step, the second rotating body is rotated to move the mold opening / closing mechanism to the standby position, and the cast product solidified by opening the mold can be taken out.
In the pouring step, it is preferable to vibrate the mold during pouring and stop the vibration after pouring.
請求項１、３、４によって、成形型を、パーティング面が鉛直、斜め方向を向く注湯開始位置に容易に移動させることができ、複雑な形状の鋳造品であっても、鋳巣のない良好な品質の鋳造品を鋳造することができる。
請求項２、５によって、注湯時に成形型に振動を与えることができ、湯回り性を向上させることができる。
According to the first, third, and fourth aspects, the mold can be easily moved to the pouring start position where the parting surface is vertical and oriented in the oblique direction. There can be no castings of good quality.
According to the second and fifth aspects, the mold can be vibrated at the time of pouring, and the hot water performance can be improved.
以下、本発明の実施の形態について添付図面に基づいて詳細に説明する。
図１は本実施の形態に係る重力鋳造装置１０の概要を示す斜視図である。
本実施の形態に係る重力鋳造装置１０は、前記のように、水平回転軸（Ｚ軸）１１を中心に鉛直面内で回転自在に設けられた第１の回転体１２と、該第1の回転体１２上に、水平回転軸１１と直角をなす回転軸（Ｙ軸）１３を中心に回転自在に設けられた第２の回転体１４と、該第２の回転体１４上に固定され、取り付けられる成形型の湯口が上側に位置する待機位置（図１（Ａ）位置）において成形型を水平方向に開閉する型開閉機構１５を具備する。型開閉機構１５に成形型１６が取り付けられる。
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an outline of a gravity casting apparatus 10 according to the present embodiment.
As described above, the gravity casting apparatus 10 according to the present embodiment includes the first rotating body 12 that is rotatably provided in the vertical plane around the horizontal rotation axis (Z axis) 11, and the first rotating body 12. A second rotating body 14 is provided on the rotating body 12 so as to be rotatable around a rotating shaft (Y axis) 13 perpendicular to the horizontal rotating shaft 11, and is fixed on the second rotating body 14. A mold opening / closing mechanism 15 for opening and closing the mold in the horizontal direction is provided at a standby position (position shown in FIG. 1A) where the gate of the mold to be attached is located on the upper side. A mold 16 is attached to the mold opening / closing mechanism 15.
Ｚ軸とＹ軸とは必ずしも直交している必要はないが、直交するように設定すると、小回りがきき、装置全体を小型化できるので好適である。
また、型開閉機構１５に振動装置（図示せず）を取り付け、注湯時に、成形型１６に振動を付与できるようにすると好適である。注湯時、成形型１６に振動を付与することによって、複雑な形状の鋳造品であっても、湯回り性よく鋳造できる。
The Z-axis and the Y-axis do not necessarily need to be orthogonal, but it is preferable to set the Z-axis and the Y-axis to be orthogonal because a small turn is possible and the entire apparatus can be downsized.
Further, it is preferable to attach a vibration device (not shown) to the mold opening / closing mechanism 15 so that vibration can be applied to the mold 16 during pouring. By applying vibration to the mold 16 at the time of pouring, even a cast product with a complicated shape can be cast with good hot water performance.
上記のように、型開閉機構１５は、待機位置において水平方向に開閉するようになっている。したがって、型開閉機構１５に取り付けられる成形型１６は、待機位置において、パーティング面が必然的に鉛直方向（上下方向）を向くことになる。
成形型１６は、型開閉機構１５に、待機位置において、湯口が上側に位置するように取り付けられる。
なお、１８は基台であり、水平回転軸１１が軸受を介して回転自在に支持される。
As described above, the mold opening / closing mechanism 15 opens and closes in the horizontal direction at the standby position. Therefore, the parting surface of the molding die 16 attached to the die opening / closing mechanism 15 necessarily faces in the vertical direction (vertical direction) at the standby position.
The mold 16 is attached to the mold opening / closing mechanism 15 so that the gate is located on the upper side at the standby position.
In addition, 18 is a base and the horizontal rotating shaft 11 is rotatably supported via a bearing.
第１の回転体１２の回転駆動機構は特に限定されるものではなく、シリンダ機構（図示せず）等を採用できる。また、第１の回転体１２の可動域は、０°（水平位置）から前後９０°の角度範囲が好適である。
第２の回転体１４は円盤状に設けられ、第１の回転体１２上に、回転軸１３を中心に回転自在に取り付けられる。この第２の回転体１４の回転駆動機構も特に限定されるものではなく、例えば歯車機構（図示せず）を介して駆動モータ（図示せず）により回転駆動する機構を採用できる。第２の回転体１４の可動域も０°（パーティング面が水平回転軸１１と平行な位置）から左右に１８０°の角度範囲とすることができる。
The rotational drive mechanism of the first rotating body 12 is not particularly limited, and a cylinder mechanism (not shown) or the like can be adopted. Further, the movable range of the first rotating body 12 is preferably an angle range from 0 ° (horizontal position) to 90 ° in the front-rear direction.
The second rotating body 14 is provided in a disk shape, and is attached on the first rotating body 12 so as to be rotatable about the rotating shaft 13. The rotational drive mechanism of the second rotating body 14 is not particularly limited, and for example, a mechanism that is rotationally driven by a drive motor (not shown) via a gear mechanism (not shown) can be adopted. The movable range of the second rotating body 14 can also be set to an angular range of 180 ° from left to right from 0 ° (parting surface is parallel to the horizontal rotation axis 11).
成形型１６には、溶湯が湯口から注湯されるキャビティ１９（図２）が設けられている。キャビティ１９は、型割りが容易に行えるように、鋳造品の形状に応じて、パーティング面からできるだけ浅くなるように設計される。
なお、図２に示すように、成形型１６には、鋳造、型割り後、鋳造品をキャビティ１９から突き出すピンを備えるエジェクタ装置２０が設けられている。このエジェクタ装置２０は、鋳造品２１を両成形型１６ａ、１６ｂから突出するように、成形型１６ａ、１６ｂの双方に設けるようにするとよい。これにより鋳造品２１が成形型１６から浮いた状態となり、取り出し装置２２により容易に取り出せる（図２（Ｃ））。
The mold 16 is provided with a cavity 19 (FIG. 2) in which molten metal is poured from a gate. The cavity 19 is designed to be as shallow as possible from the parting surface according to the shape of the cast product so that the mold can be easily divided.
As shown in FIG. 2, the molding die 16 is provided with an ejector device 20 including a pin that projects the cast product from the cavity 19 after casting and splitting. The ejector device 20 may be provided on both the molding dies 16a and 16b so that the casting 21 protrudes from both the molding dies 16a and 16b. As a result, the cast product 21 is lifted from the mold 16 and can be easily taken out by the take-out device 22 (FIG. 2C).
なお、型開閉機構１５の待機位置としては特に限定されないが、本実施の形態では、水平方向に開閉して鋳造品２１を取り出す型開閉位置（Ｚ軸０°、Ｙ軸０°）とする（図１（Ａ））。あるいは図１（Ｂ）の、Ｚ軸０°、Ｙ軸９０°の位置であってもよい。
重力鋳造装置１０は上記のように構成されているので、図３（Ａ）〜図３（Ｈ）に示すように、成形型１６を、第１の回転体１２、第２の回転体１４を回転することによって、３次元空間内の任意の位置に回転移動させることができる。
The standby position of the mold opening / closing mechanism 15 is not particularly limited, but in this embodiment, it is set as a mold opening / closing position (Z axis 0 °, Y axis 0 °) where the casting product 21 is opened and closed horizontally (see FIG. FIG. 1 (A)). Alternatively, it may be the position of 0 ° Z axis and 90 ° Y axis in FIG.
Since the gravity casting apparatus 10 is configured as described above, as shown in FIGS. 3 (A) to 3 (H), the mold 16 is replaced with the first rotating body 12 and the second rotating body 14. By rotating, it can be rotated to an arbitrary position in the three-dimensional space.
以下、重力鋳造装置１０を用いる重力鋳造方法について説明する。
本実施の形態に係る重力鋳造装置１０では、上記のように、特に、待機位置において、成形型１６がそのパーティング面が鉛直方向を向くように型開閉機構１５に装着されていることを特徴としている。したがって、待機位置から、回転駆動機構により型開閉機構１５を水平面内で回転させることによって、成形型１６を、湯口が位置するパーティング面が鉛直方向を保ったまま任意の位置まで回転移動させることができる。
Hereinafter, a gravity casting method using the gravity casting apparatus 10 will be described.
In the gravity casting apparatus 10 according to the present embodiment, as described above, particularly in the standby position, the mold 16 is mounted on the mold opening / closing mechanism 15 so that its parting surface faces the vertical direction. It is said. Therefore, by rotating the mold opening / closing mechanism 15 within the horizontal plane from the standby position by the rotation drive mechanism, the mold 16 is rotated and moved to an arbitrary position while the parting surface where the gate is located maintains the vertical direction. Can do.
成形型１６に注湯する場合、具体的には、まず、重力鋳造装置１０の回りに配置されている注湯装置２４（図４）に正対する位置まで、成形型１６を回転移動させる。次いで、回転駆動機構により、第１の回転体１２を傾動させ、成形型１６を、その湯口が注湯装置２４のラドル２５と一致する位置まで移動させ、湯口に溶湯を注湯すればよい。これにより、溶湯を、湯口から、成形型１６のキャビティ１９内に注湯できる。なお、ラドル２５も適宜移動させ、ラドル２５と湯口を一致させるようにする。 When pouring the mold 16, specifically, the mold 16 is first rotated to a position facing the pouring apparatus 24 (FIG. 4) arranged around the gravity casting apparatus 10. Next, the first rotating body 12 is tilted by the rotation driving mechanism, the mold 16 is moved to a position where the pouring gate coincides with the ladle 25 of the pouring device 24, and the molten metal is poured into the pouring gate. Thereby, the molten metal can be poured into the cavity 19 of the mold 16 from the gate. The ladle 25 is also moved as appropriate so that the ladle 25 and the gate are matched.
上記のように、成形型１６はパーティング面が鉛直方向を向いた状態で、水平回転軸１１を中心として傾動されるのであるから、そのパーティング面、したがってキャビティ１９は鉛直（上下）方向を保ったまま、傾動される。鋳造品が複雑な形状の場合、キャビティ１９は鉛直方向（すなわち竪方向）を保ったまま傾動され（すなわち斜めになる）、この状態で溶湯が注入される。これにより、後記するように、キャビティ１９内に空気が巻き込まれるのが防止でき、鋳巣の発生を効果的に防止できる。 As described above, since the molding die 16 is tilted about the horizontal rotation axis 11 with the parting surface facing the vertical direction, the parting surface, and hence the cavity 19, has a vertical (vertical) direction. Tilt while keeping. When the casting has a complicated shape, the cavity 19 is tilted (that is, inclined) while maintaining the vertical direction (that is, the heel direction), and the molten metal is injected in this state. Thereby, as will be described later, it is possible to prevent air from being caught in the cavity 19 and to effectively prevent the formation of a cast hole.
図５（Ａ）〜図５（Ｃ）は、本実施の形態にしたがって注湯したものであり、キャビティ面が鉛直方向を向いたまま斜めに傾斜した状態で注湯した状況を示している。この場合、キャビティ１９の上部付近が斜めになっていることから、溶湯は入り口付近に広がらず、入り口を塞ぐ状態とならないので、そのままキャビティ１９内を下降し、空気を上方に押し出しつつ、キャビティ下部から徐々にキャビティ内を満たすので、鋳巣が発生せず、品質の良好な鋳造品が得られるのである。 5 (A) to 5 (C) show a situation in which the molten metal is poured in accordance with the present embodiment and is poured in a state where the cavity surface is inclined obliquely while facing the vertical direction. In this case, since the vicinity of the upper portion of the cavity 19 is slanted, the molten metal does not spread near the entrance and does not close the entrance. Therefore, the inside of the cavity 19 is lowered as it is, while pushing the air upward, Thus, the cavity is gradually filled, so that no casting hole is generated and a cast product with good quality can be obtained.
本実施の形態に係る重力鋳造装置１０は、上記のように、成形型１６がそのパーティング面が鉛直方向を向くように型開閉機構１５に装着されていて、待機位置から、回転駆動機構により型開閉機構１５を水平面内で回転させることによって、成形型１６を、湯口が位置するパーティング面が鉛直方向を保ったまま任意の位置まで回転移動させることができる。そして、型開閉機構１５を傾動させるだけで、容易に、図５に示す、キャビティ面が鉛直方向を向いたまま、必要なだけ傾斜した状態を容易にセッティングできるのである。 In the gravity casting apparatus 10 according to the present embodiment, as described above, the mold 16 is mounted on the mold opening / closing mechanism 15 so that the parting surface thereof faces the vertical direction. By rotating the mold opening / closing mechanism 15 in a horizontal plane, the molding die 16 can be rotated to an arbitrary position while the parting surface on which the gate is located maintains the vertical direction. By simply tilting the mold opening / closing mechanism 15, it is possible to easily set a state in which the cavity surface shown in FIG. 5 is tilted as much as necessary with the cavity surface facing the vertical direction.
なお、上記説明では、理解を容易にするため、成形型１６をまず水平面内で所要位置まで回転し、次いで傾動させる動作にて説明したが、図６に示すように、水平回転と傾動動作とを併行して行い、成形型１６を注湯開始位置まで移動させるようにするとよい。
すなわち、待機位置（図６（Ａ））から、成形型１６の水平回転、傾動動作を併行して行って（図６（Ｂ））、図６（Ｃ）の注湯開始位置まで移動させるのである。この注湯開始位置でラドル２５により溶湯をキャビティ内に注湯する。そして、キャビティ１９内の空気を徐々に排出するとともに、キャビティ内に溶湯を順次補給するために、水平回転軸１１を中心に成形型１６を、キャビティ面の鉛直方向を保ったまま、水平となる位置まで回転復帰させ、溶湯を凝固させる（図６（Ｄ）、図６（Ｅ））。最後に待機位置まで成形型１６を水平回転移動させ、型割し、鋳造品を取り出して鋳造を終了する。
In the above description, in order to facilitate understanding, the mold 16 is first rotated to a required position in the horizontal plane and then tilted. However, as shown in FIG. The mold 16 may be moved to the pouring start position.
That is, from the standby position (FIG. 6 (A)), the horizontal rotation and tilting operations of the mold 16 are performed simultaneously (FIG. 6 (B)) and moved to the pouring start position of FIG. 6 (C). is there. The molten metal is poured into the cavity by the ladle 25 at the pouring start position. Then, the air in the cavity 19 is gradually discharged and the molten metal is sequentially replenished to the cavity 19 so that the mold 16 is kept horizontal with the vertical direction of the cavity surface maintained around the horizontal rotating shaft 11. The rotation is returned to the position to solidify the molten metal (FIGS. 6D and 6E). Finally, the mold 16 is rotated horizontally to the standby position, the mold is divided, the cast product is taken out, and the casting is finished.
なお、上記では、成形型１６のパーティング面が鉛直方向を向いた状態で注湯する場合について説明したが、鋳造品が種々の複雑な形状のものの場合には、その形状に応じて第１の回転体１２および第２の回転体１４を適宜回動することによって、図４に示すように、パーティング面が地面に対して上向きに傾斜した状態で注湯する状態にすることももちろん可能である。 In the above description, the case where the molten metal is poured in a state where the parting surface of the mold 16 is oriented in the vertical direction has been described. However, when the cast product has various complicated shapes, the first is determined according to the shape. As shown in FIG. 4, by rotating the rotating body 12 and the second rotating body 14 as appropriate, it is of course possible to pour hot water with the parting surface inclined upward with respect to the ground. It is.
例えば、鋳造品が図７に示すように、水平回転軸１１が伸びる方向に長く伸びる部位Ｐを有する複雑な形状のものの場合、図７（Ａ）、（Ｂ）に示すような、パーティング面が鉛直となる方向（矢印方向）から注湯すると湯回り性が悪く、鋳造が困難となる場合がある。このような場合には、図８に示すように、第１の回転体１２および第２の回転体１４を適宜回動することによって、パーティング面が地面に対して上向きに傾斜する方向（矢印方向）にし、この方向から注湯するとともに、水平回転軸を中心に成形型を適宜傾動することによって、部位Ｐの空気抜きをすることができる（図５（Ａ）〜図５（Ｃ））。 For example, when the cast product has a complicated shape having a portion P that extends long in the direction in which the horizontal rotating shaft 11 extends as shown in FIG. 7, the parting surface as shown in FIGS. When pouring from the direction (arrow direction) where is vertical, casting performance may be poor and casting may be difficult. In such a case, as shown in FIG. 8, by rotating the first rotating body 12 and the second rotating body 14 as appropriate, the direction in which the parting surface is inclined upward with respect to the ground (arrow) The portion P can be vented by pouring hot water from this direction and appropriately tilting the mold around the horizontal rotation axis (FIGS. 5A to 5C).
このように、第１の回転体１２の可動域を、０°（水平位置）から前後９０°の角度範囲の広い可動域とすることで、図５（Ａ）〜図５（Ｃ）のように、鋳造品が複雑な形状のものであっても、空気を良好に排出でき、鋳巣のない良好な品質の鋳造品を得ることができるのである。 Thus, by making the movable range of the first rotating body 12 a wide movable range from 0 ° (horizontal position) to 90 ° front and back, as shown in FIGS. 5 (A) to 5 (C). In addition, even if the cast product has a complicated shape, air can be discharged well, and a cast product having a good quality without a cast hole can be obtained.
１０ 重力鋳造装置、１１ 水平回転軸、１２ 第１の回転体、１３ 回転軸、１４ 第２の回転体、１５ 型開閉機構、１６ 成形型、１８ 基台、１９ キャビティ、２０ エジェクタ装置、２１ 鋳造品、２２ 取り出し装置、２４ 注湯装置、２５ ラドル DESCRIPTION OF SYMBOLS 10 Gravity casting apparatus, 11 Horizontal rotating shaft, 12 1st rotary body, 13 Rotary shaft, 14 2nd rotary body, 15 type | mold opening / closing mechanism, 16 Mold, 18 base, 19 cavity, 20 ejector apparatus, 21 casting Product, 22 take-out device, 24 pouring device, 25 ladle
Claims (5)
該第１の回転体上に、前記水平回転軸と直角をなし、回転軸を中心に回転自在に設けられ、前記水平回転軸を中心に傾動される第２の回転体と、
該第２の回転体上に固定され、待機位置において、水平方向に開閉する型開閉機構と、
前記待機位置において、湯口が上側に位置するように前記型開閉機構に取り付けられる成形型を具備することを特徴とする重力鋳造装置。 A first rotating body provided rotatably around a horizontal rotation axis;
On the first rotary member, to name the horizontal shaft perpendicular, et rotatably provided around a rotating shaft is a second rotating body is tilted around the horizontal shaft,
A mold opening / closing mechanism fixed on the second rotating body and opening / closing horizontally in a standby position;
A gravity casting apparatus comprising: a mold that is attached to the mold opening / closing mechanism so that a gate is located at an upper side at the standby position .
前記第１の回転体および第２の回転体を回転させて、前記型開閉機構に取り付けられた成形型を、パーティング面が鉛直方向を向く注湯開始位置に位置合わせする工程と、
前記湯口に溶湯を供給しながら、前記第１の回転体を回転させて、前記型開閉機構に取り付けられた成形型が徐々に水平方向を向くように移動させて溶湯を凝固させる注湯工程を具備することを特徴とする重力鋳造方法。 A gravity casting method using the gravity casting apparatus according to claim 1 or 2,
Rotating the first rotating body and the second rotating body to align the molding die attached to the mold opening and closing mechanism with a pouring start position where the parting surface faces the vertical direction;
A pouring step of solidifying the molten metal by rotating the first rotating body while moving the molten metal to the gate and moving the mold attached to the mold opening / closing mechanism gradually in the horizontal direction. A gravity casting method characterized by comprising.
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