JPH09103843A - Molding machine - Google Patents
Molding machineInfo
- Publication number
- JPH09103843A JPH09103843A JP7286855A JP28685595A JPH09103843A JP H09103843 A JPH09103843 A JP H09103843A JP 7286855 A JP7286855 A JP 7286855A JP 28685595 A JP28685595 A JP 28685595A JP H09103843 A JPH09103843 A JP H09103843A
- Authority
- JP
- Japan
- Prior art keywords
- sand
- molding
- mold
- making apparatus
- model box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
Abstract
Description
【０００１】[0001]
【発明の技術分野】本発明は、空気圧を利用して鋳型
（中子を含む）を造型をする鋳型造型装置に関し、より
詳しくは、箱形形状の模型箱の鋳型キャビティ空間に鋳
物砂を充填して、中子鋳型、主型鋳型を造型するのに好
適な鋳型造型装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold making apparatus for making a mold (including a core) by using air pressure, and more specifically, filling a molding sand into a mold cavity space of a box-shaped model box. The present invention also relates to a mold making apparatus suitable for making a core mold and a main mold.
【０００２】[0002]
【従来技術】従来、上部に砂供給口を有する模型箱上面
に、下端部に開閉弁を備えたホッパ−を該砂供給口に連
通して載置すると共に該模型箱下方から負圧作用を及ぼ
して該模型箱内の空洞部を負圧化し、前記開閉弁を開い
てホッパ−内の鋳物砂を一気に該空洞部に吸引充填する
鋳物砂供給方法は公知である（特公昭６３−２１５８２
号公報）。 また、この方法に関する鋳型造型装置は業
界で広く用いられている。2. Description of the Related Art Conventionally, a hopper having an opening / closing valve at the lower end is placed on the upper surface of a model box having a sand supply port in the upper part thereof so as to communicate with the sand supply port, and a negative pressure is applied from below the model box. A casting sand supply method is known in which the hollow portion in the model box is negatively pressurized, the opening / closing valve is opened, and the casting sand in the hopper is suction-filled into the hollow portion at once (Japanese Patent Publication No. 63-21582).
No.). Further, the mold making apparatus relating to this method is widely used in the industry.
【０００３】しかし、この従来の造型装置では、空の鋳
型キャビティに一気に鋳物砂と空気が流入するため、鋳
型キャビティ細部には鋳物砂と共に流入した空気が先に
到達し、鋳物砂の充填を阻害する。また、流入した鋳物
砂は慣性に従い直進しようとする。したがって、鋳物砂
の流入方向と異なった角度に鋳物砂は充填されにくく、
特に細部において充填不足が起こりやすかった。このた
め、鋳物砂の充填時においても真空ポンプを動作させ鋳
型キャビティ内の負圧を継続させると共に、鋳型キャビ
ティ細部にもベントプラブ等の排気手段を設け、充填さ
れにくい鋳型キャビティ細部への空気流を作り充填を高
めている。しかし、鋳型キャビティ内の空気を排気する
ベントプラグ等の設置位置を最適にするのが困難であ
り、多大な労力と型修正費用を要していた。However, in this conventional molding apparatus, the molding sand and the air flow into the empty mold cavity all at once, so that the air that has flowed in together with the molding sand reaches the mold cavity details first, which hinders the filling of the molding sand. To do. Further, the inflowing foundry sand tends to go straight according to the inertia. Therefore, the molding sand is difficult to be filled at an angle different from the inflow direction of the molding sand,
In particular, it was easy to cause insufficient filling in details. Therefore, even when the molding sand is filled, the vacuum pump is operated to maintain the negative pressure in the mold cavity, and the vent cavity is also provided in the detail of the mold cavity to provide an air flow to the detail of the mold cavity which is difficult to fill. Making and filling up. However, it is difficult to optimize the installation position of the vent plug or the like for exhausting air in the mold cavity, which requires a great deal of labor and mold correction cost.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、これ
らの問題に鑑みなされたものであり、中子鋳型が複雑な
形状でも、鋳型キャビティの上向き部分及び狭い部分で
も鋳物砂充填が良好な鋳型造型装置を提案することであ
る。SUMMARY OF THE INVENTION The object of the present invention is to solve these problems, and it is possible to achieve good molding sand filling even in a core mold having a complicated shape and in the upward and narrow parts of the mold cavity. It is to propose a mold making apparatus.
【０００５】[0005]
【問題解決のための手段】上記の目的を達成するために
本発明における鋳型造型装置は、鋳物砂投入手段の下方
に設けられた鋳型キャビティに鋳物砂を投入して鋳型を
造型する鋳型造型装置において、砂投入ホッパ−の下部
に設けられるとともに開閉可能に設けられた砂投入ゲ−
トを具備することにより鋳物砂を供給する鋳物砂投入手
段と、前記鋳型キャビティを画成する模型箱内の空気を
真空ポンプにより減圧する減圧手段と、前記鋳物砂投入
手段の下方に位置すると共に模型箱の上部開口に移動密
着可能に設けられると共に大気導入バルブを具備する大
気導入手段と、を具備することを特徴とする。In order to achieve the above-mentioned object, a mold molding apparatus according to the present invention is a mold molding apparatus for molding molding sand by molding the molding sand into a mold cavity provided below the molding sand charging means. In the above, in the sand loading hopper, which is provided under the sand loading hopper and is openable and closable,
A molding sand feeding means for supplying molding sand by providing a mold, a decompression means for decompressing the air in the model box defining the mold cavity by a vacuum pump, and a molding sand feeding means located below the molding sand feeding means. Atmosphere introducing means provided at the upper opening of the model box so as to be movable in close contact with each other and having an atmosphere introducing valve.
【０００６】すなわち、本発明における鋳型造型装置
は、鋳型の鋳物砂の全重量を少なくとも２分割した鋳物
砂の投入量を計量するとともに鋳型キャビティに投入す
る工程と、鋳型キャビティ内を減圧した後、投入した鋳
物砂の上から空気を１回あるいは複数回急速に導入する
工程と、前記第１回目の投入量の残部の鋳物砂を前記鋳
型キャビティに追加投入した後のち、鋳型キャビティ内
を減圧した後、その上から大気を１回あるいは複数回急
速に入れる工程を１回以上繰り返すことを特徴とする造
型方法を実施するのに好適な鋳型造型装置を提供するも
のである。That is, in the mold making apparatus of the present invention, the total amount of the molding sand in the mold is divided into at least two parts, and the amount of the molding sand is measured and charged into the mold cavity. After depressurizing the mold cavity, A step of rapidly introducing air once or a plurality of times from above the cast molding sand, and after additionally charging the remainder of the molding sand of the first charging amount into the mold cavity, the pressure inside the mold cavity was reduced. The present invention provides a mold making apparatus suitable for carrying out a molding method characterized by repeating the step of rapidly introducing the atmosphere once or a plurality of times from the above.
【０００７】本発明の鋳型造型装置を用いた造型過程は
以下のように説明できる。まず、第１投入量を鋳型キャ
ビティに投入する。鋳型キャビティ内を減圧した後、鋳
物砂を急速に空気を複数回導入することによりキャビテ
ィを画成するあらゆる方向に移動させる。ついで、再び
鋳物砂を投入した後鋳型キャビティ内を減圧し、もう一
度鋳物砂を急速に空気を１回あるいは複数回導入するこ
とにより鋳物砂を鋳型キャビティの横及び上に移動させ
て充填する。さらに、鋳型キャビティが充填不足なら
ば、さらに鋳物砂を投入して鋳型キャビティ内を減圧
し、急速に空気を１回あるいは複数回導入し、全体的に
充填が完了する。The molding process using the mold molding apparatus of the present invention can be explained as follows. First, the first dose is charged into the mold cavity. After depressurizing the mold cavity, the casting sand is rapidly moved multiple times by introducing air to move the cavity in all directions that define the cavity. Next, the mold sand is charged again, the pressure inside the mold cavity is reduced, and the mold sand is rapidly introduced once or plural times to move the mold sand to the side and above the mold cavity and fill it. Further, if the mold cavity is insufficiently filled, the molding sand is further charged to depressurize the mold cavity, and air is rapidly introduced once or plural times to complete the filling as a whole.
【０００８】本発明に用いる鋳物砂として各種の自硬性
鋳物砂またはガス硬化性鋳物砂が好適である。例えば、
自硬性鋳物砂としては、フラン樹脂、ウレタン樹脂等を
バインダとする有機自硬性、水ガラス、セメント等をバ
インダとする無機自硬性などがある。ガス硬化性鋳物砂
としては、ウレタン樹脂を粘結剤とするコ−ルドボック
ス用鋳物砂等があり、ガス硬化性鋳物砂の充填造型に本
発明は好適である。As the molding sand used in the present invention, various kinds of self-hardening molding sand or gas-hardening molding sand are suitable. For example,
Examples of the self-hardening molding sand include organic self-hardening using a furan resin, urethane resin or the like as a binder, and inorganic self-hardening using water glass, cement or the like as a binder. Examples of the gas-curable molding sand include molding sand for cold boxes using a urethane resin as a binder, and the present invention is suitable for filling molding of the gas-curable molding sand.
【０００９】[0009]
【発明の実施の形態１】以下本発明の実施の形態を図面
にもとづいて詳しく説明する。本発明の第１の実施の形
態は、鋳物砂投入手段１、減圧手段２及び大気導入手段
３を具備する鋳型造型装置であって、減圧手段２が大気
導入手段３を兼ね、さらに、混練手段４、模型箱移動手
段５、昇降テ−ブル６及び鋳物砂計量手段７を有する場
合の実施の形態を図１に基づき説明する。Embodiment 1 of the present invention will be described in detail below with reference to the drawings. The first embodiment of the present invention is a mold making apparatus comprising a foundry sand charging means 1, a pressure reducing means 2 and an atmosphere introducing means 3, wherein the pressure reducing means 2 also serves as the atmosphere introducing means 3, and further the kneading means. 4, an embodiment in the case of having the model box moving means 5, the elevating table 6 and the foundry sand measuring means 7 will be described with reference to FIG.
【００１０】本発明の第１の実施の形態は、フレ−ムＦ
に上部から、砂貯蔵手段８、混練手段４、鋳物砂投入手
段１が設けられ、さらに減圧手段２、大気導入手段３、
模型箱移動手段５を具備している。砂貯蔵手段８である
砂貯蔵ホッパ−には、混練可能な原砂が貯えられてお
り、適宜、混練装置４ａに原砂を供給するようになって
いる。該砂貯蔵手段８の下部には、混練手段４が設けら
れている。該混練手段４は、混練装置４ａ及びバインダ
の供給装置（図示せず）から成り、混練羽根４ｂの回転
により混練と砂の前進の動作が行われる。前記混練装置
４ａの出口の下部には、砂投入ホッパ−１ａが設けら
れ、砂投入ホッパ−１ａ及びその下部に設けられた砂投
入ゲ−ト１ｂから鋳物砂投入手段１が構成されている。
砂投入ゲ−ト１ｂを開状態にすれば、所定量混練された
鋳物砂を鋳型キャビティ９内に投入できる。The first embodiment of the present invention is a frame F.
From the top, a sand storage means 8, a kneading means 4, a foundry sand feeding means 1 are provided, and further a decompression means 2, an air introduction means 3,
The model box moving means 5 is provided. Raw sand that can be kneaded is stored in the sand storage hopper that is the sand storage means 8, and the raw sand is appropriately supplied to the kneading device 4a. A kneading means 4 is provided below the sand storage means 8. The kneading means 4 comprises a kneading device 4a and a binder supply device (not shown), and the kneading blades 4b are rotated to perform the kneading operation and the sand advancing operation. A sand feeding hopper-1a is provided below the outlet of the kneading device 4a, and a casting sand feeding means 1 is composed of the sand feeding hopper-1a and the sand feeding gate 1b provided under the sand feeding hopper-1a.
When the sand feeding gate 1b is opened, the molding sand kneaded in a predetermined amount can be fed into the mold cavity 9.
【００１１】前記鋳物砂投入手段１の下には、中空容器
Ｖを含む減圧手段２が設けられ、該減圧手段２は、一端
を上記鋳型キャビティ９を画する模型箱１２の上部開口
に連通可能とする中空容器Ｖを有し、他端は真空バルブ
２ａを介して真空ポンプ２ｂに連通されており、選択に
より砂微粉捕集用のダストフィルタ２ｃを付加してい
る。前記真空バルブ２ａの動作で鋳型キャビティ９内を
２〜１００Ｔｏｒｒまで減圧できる。 さらに減圧手段
２の中空容器Ｖの上部には大気導入手段３が一体に構成
され、該大気導入手段３は、大気導入バルブ３ａを具備
したものであり中空容器Ｖを介して鋳型キャビティ９に
大気を導入することができる（図２参照）。A pressure reducing means 2 including a hollow container V is provided below the molding sand charging means 1, and one end of the pressure reducing means 2 can communicate with an upper opening of a model box 12 defining the mold cavity 9. Has a hollow container V, the other end of which is connected to a vacuum pump 2b via a vacuum valve 2a, and a dust filter 2c for collecting fine sand particles is optionally added. The inside of the mold cavity 9 can be depressurized to 2 to 100 Torr by the operation of the vacuum valve 2a. Further, an atmosphere introducing means 3 is integrally formed on the upper part of the hollow container V of the decompression means 2, and the atmosphere introducing means 3 is equipped with an atmosphere introducing valve 3a, and the atmosphere is introduced into the mold cavity 9 through the hollow container V. Can be introduced (see FIG. 2).
【００１２】本発明の第１の実施の形態では、鋳物砂投
入手段１、減圧手段２及び大気導入手段３が一体連通さ
れた砂投入充填ユニットＵを構成している。該砂投入充
填ユニットＵは、昇降フレ−ム１０に取り付けられてお
り、昇降用ガイドレ−ル１３に沿って昇降する。さら
に、模型箱移動手段５はロ−ラ−コンベアから成ってお
り、手動または駆動装置（図示せず）で模型箱１２を移
動可能としている。In the first embodiment of the present invention, a sand-filling unit U in which the foundry sand feeding means 1, the pressure reducing means 2 and the atmosphere introducing means 3 are integrally connected to each other is constructed. The sand charging unit U is attached to the elevating frame 10 and moves up and down along the elevating guide rail 13. Further, the model box moving means 5 is composed of a roller conveyor, and the model box 12 can be moved manually or by a driving device (not shown).
【００１３】以下、このように構成された鋳型造型装置
の作用を述べる。図１において、砂貯蔵手段には、混練
可能な原砂が貯えられており、適宜、混練装置４ａに原
砂を供給するようになっている。混練装置４ａに供給さ
れた原砂は、図示していないバインダの供給装置から、
混練に必要なバインダが添加され、混練されて鋳物砂と
して砂投入ホッパ−１ａへ排出される。鋳物砂の排出量
は、混練装置４ａの混練羽根４ｂの回転、停止をタイマ
−設定し、時間当たりの排出量として計算される。The operation of the mold making apparatus thus constructed will be described below. In FIG. 1, raw sand that can be kneaded is stored in the sand storage means, and the raw sand is appropriately supplied to the kneading device 4a. The raw sand supplied to the kneading device 4a is supplied from a binder supply device (not shown),
A binder necessary for kneading is added, kneaded and discharged as molding sand to the sand feeding hopper-1a. The discharge amount of foundry sand is calculated as a discharge amount per hour by setting a timer for rotation and stop of the kneading blades 4b of the kneading device 4a.
【００１４】次に、鋳物砂投入手段１、減圧手段２及び
大気導入手段３が一体になって昇降フレ−ム１０に取り
付けられた砂投入充填ユニットＵが、昇降用ガイドレ−
ル１３に沿って降下し、上記鋳物砂投入手段１の砂投入
ゲ−ト１ｂの下方に設けられた中空容器Ｖと模型箱１２
上部の開口部Ｖ１を押圧連通する（図２参照）。この連
通状態で砂投入ホッパ−１ａの下部に設けられた砂投入
ゲ−ト１ｂを開状態にして、上記で説明の任意に計量さ
れた砂を鋳型キャビティ９内に投入する。鋳物砂投入
後、砂投入ゲ−ト１ｂを閉状態とし、鋳型キャビティ９
内を減圧手段２及び中空容器Ｖを介して減圧状態とす
る。Next, the sand-charging and filling unit U, in which the casting sand feeding means 1, the pressure reducing means 2 and the atmosphere introducing means 3 are integrally attached to the lifting frame 10, is moved up and down.
And a model box 12 that descends along the rule 13 and is provided below the sand charging gate 1b of the casting sand charging means 1.
The upper opening V1 is pressed and communicated (see FIG. 2). In this communication state, the sand feeding gate 1b provided in the lower portion of the sand feeding hopper-1a is opened, and the arbitrarily measured sand described above is fed into the mold cavity 9. After the molding sand was charged, the sand charging gate 1b was closed and the mold cavity 9
The inside is depressurized through the depressurizing means 2 and the hollow container V.
【００１５】鋳型キャビティ９内が所定の減圧状態とな
った後、大気導入バルブ３ａの開動作をして、鋳型キャ
ビティ９内に大気を導入する。この大気は、瞬時に、鋳
型キャビティ９内を大気状態にできる衝撃圧として作用
する。この衝撃圧により鋳型キャビティ９内の砂は隅々
に移動する。これらの砂投入工程、減圧工程、大気導入
工程を複数回繰り返しながら、鋳型キャビティ９内全体
に鋳物砂を充填し造型が完了する。造型が完了した後模
型箱移動手段５であるロ−ラ−コンベア上を搬送され
る。After the pressure inside the mold cavity 9 is reduced to a predetermined level, the atmosphere introducing valve 3a is opened to introduce the atmosphere into the mold cavity 9. This atmosphere acts as an impact pressure that can instantly bring the inside of the mold cavity 9 into an atmospheric state. This impact pressure moves the sand in the mold cavity 9 to every corner. By repeating the sand adding step, the depressurizing step, and the air introducing step a plurality of times, the entire mold cavity 9 is filled with the molding sand, and the molding is completed. After the molding is completed, it is conveyed on the roller conveyor which is the model box moving means 5.
【００１６】以下、本発明の第１の実施の形態の構成手
段を変形した場合について、本発明の別の実施の形態を
説明する。Hereinafter, another embodiment of the present invention will be described in which the constituent means of the first embodiment of the present invention is modified.
【００１７】本発明の第１の実施の形態では、常に鋳物
砂投入手段１の下方に鋳型キャビティ９が設けられる構
成としたが、少なくとも砂投入時に鋳物砂投入手段１の
下方に鋳型キャビティ９が位置されればよい。したがっ
て、左右からの移動、回転による移動あるいはこれらを
複合した移動も可能である。In the first embodiment of the present invention, the mold cavity 9 is always provided below the foundry sand charging means 1. However, the mold cavity 9 is provided below the foundry sand charging means 1 at least when the sand is charged. It should be located. Therefore, it is possible to move from the left and right, move by rotation, or move in combination thereof.
【００１８】本発明の第１の実施の形態では、減圧手段
２は、鋳型キャビティ９を画する模型箱１２の上部開口
により鋳型キャビティ９と連通したが、本発明の別の実
施形態では、減圧手段２と鋳型キャビティ連通は、模型
箱１２の上部開口を介する場合に限定されない。本発明
の第１の実施の形態では、ベントプラグなしでも鋳型キ
ャビティ９内を減圧にできる。したがって、減圧用のベ
ントプラブを設ける必要がなく、模型箱１２が簡単であ
り、従来では必要だった模型箱１２へのベント取付等の
工数を削減できる。なお、既存のベントプラグのついた
模型箱１２を使用する必要がある場合は、昇降テ−ブル
６の上面部に、減圧工程時に吸引できる開口部を設け、
この昇降テ−ブル６を模型箱１２に圧接し、上昇させる
ことで減圧手段２との回路を接続すればよい。また、模
型箱の両側面に開口部を設け横方向から減圧することも
可能である。In the first embodiment of the present invention, the depressurizing means 2 communicates with the mold cavity 9 through the upper opening of the model box 12 defining the mold cavity 9, but in another embodiment of the present invention, the depressurizing means 2 is connected. The communication between the means 2 and the mold cavity is not limited to via the upper opening of the model box 12. In the first embodiment of the present invention, the pressure inside the mold cavity 9 can be reduced without the vent plug. Therefore, it is not necessary to provide a vent plug for decompression, the model box 12 is simple, and the number of man-hours required to attach the vent to the model box 12, which has been conventionally required, can be reduced. If it is necessary to use the existing model box 12 with a vent plug, an opening for suction can be provided on the upper surface of the lifting table 6 during the depressurization process.
This elevating table 6 may be brought into pressure contact with the model box 12 and elevated to connect the circuit with the decompression means 2. It is also possible to provide openings on both sides of the model box to reduce pressure from the lateral direction.
【００１９】本発明の第１の実施の形態では、大気導入
手段３は、中空容器Ｖの上部に一体に構成され、該大気
導入手段３は、大気導入バルブ３ａを具備したものであ
り中空容器Ｖを介して鋳型キャビティ９に大気を導入す
ることとしたが、大気導入手段３に用いる大気導入バル
ブ３ａの取付位置、形状、大きさは、本実施の形態に限
定されるものではない。In the first embodiment of the present invention, the atmosphere introducing means 3 is integrally formed on the upper part of the hollow container V, and the atmosphere introducing means 3 is equipped with an atmosphere introducing valve 3a. Although the atmosphere is introduced into the mold cavity 9 via V, the mounting position, shape, and size of the atmosphere introducing valve 3a used in the atmosphere introducing means 3 are not limited to those in this embodiment.
【００２０】さらに、本発明の第１の実施の形態では、
鋳物砂投入手段１、減圧手段２及び大気導入手段３が中
空容器Ｖを介して一体になった砂投入充填ユニットＵを
構成させ、一体で昇降手段１０，１３により昇降可能に
構成したが、一体で左右移動、回転移動、あるいはこれ
らに上下移動を加えた移動が可能な構成としてもよい。Further, in the first embodiment of the present invention,
The casting sand feeding means 1, the depressurizing means 2 and the atmosphere introducing means 3 are integrated through the hollow container V to form a sand feeding and filling unit U which can be lifted and lowered by the lifting and lowering means 10 and 13 as a unit. It is also possible to adopt a configuration capable of horizontal movement, rotational movement, or movement in which vertical movement is added to these.
【００２１】また、本発明の第１の実施の形態では、鋳
物砂投入手段１、減圧手段２及び大気導入手段３が一体
になった砂投入充填ユニットＵを構成させ、一体で昇降
手段により昇降可能に構成したが、鋳物砂投入手段１、
減圧手段２及び大気導入手段３は、別々に構成できる。
これらの少なくとも一つを鋳物砂投入手段１とは別個に
構成してもよい。例えば、鋳物砂投入手段１を別個に構
成した場合には、前記鋳型キャビティ９を画成する模型
箱１２の入口に前記鋳物砂投入手段１を押圧連通する押
圧手段を別個に設ければよい。また、例えば、大気導入
手段３を別個に構成した場合には、前記鋳型キャビティ
９を画成する模型箱１２の入口に前記大気導入手段３を
押圧連通する押圧手段を設ければよい。Further, in the first embodiment of the present invention, a sand feeding and filling unit U in which the foundry sand feeding means 1, the pressure reducing means 2 and the atmospheric air introducing means 3 are integrated is constructed, and the lifting and lowering means raises and lowers them together. Although possible, the casting sand feeding means 1,
The decompression unit 2 and the air introduction unit 3 can be configured separately.
At least one of these may be configured separately from the foundry sand charging means 1. For example, when the molding sand charging means 1 is separately configured, a pressing means for pressing and communicating the molding sand charging means 1 may be separately provided at the entrance of the model box 12 that defines the mold cavity 9. Further, for example, when the atmosphere introducing means 3 is separately configured, a pressing means for pressing and communicating the atmosphere introducing means 3 may be provided at the entrance of the model box 12 that defines the mold cavity 9.
【００２２】次に、本発明の第１の実施の形態では設け
られている構成が、別の実施の形態では選択的な構成手
段になっていることについて述べ、本発明の別の実施の
形態を説明する。Next, it will be described that the configuration provided in the first embodiment of the present invention is a selective configuration means in another embodiment, and another embodiment of the present invention will be described. Will be explained.
【００２３】まず、本発明の第１の実施の形態では混練
手段４は鋳物砂投入手段１の上部に設置したが、別の場
所で混練された混練砂を搬送し砂投入ホッパ−１ａへ供
給することもできる。したがって、本発明の別の実施の
形態では、混練手段４は必ずしも必要ではない。First, in the first embodiment of the present invention, the kneading means 4 is installed above the foundry sand feeding means 1, but the kneading sand kneaded at another location is conveyed and supplied to the sand feeding hopper-1a. You can also do it. Therefore, the kneading means 4 is not always necessary in another embodiment of the present invention.
【００２４】また、本発明の第１の実施の形態では、模
型箱移動手段５として、ロ−ラ−コンベアを設けたが、
本発明の別の実施の形態では、模型箱移動手段５は必須
のものではなく、模型箱１２を工場の床に置き、前記砂
投入充填ユニットＵを移動させることもできる。したが
って、本発明の別の実施の形態では、模型箱移動手段５
は必ずしも必要ではない。In the first embodiment of the present invention, a roller conveyor is provided as the model box moving means 5, but
In another embodiment of the present invention, the model box moving means 5 is not essential, and the model box 12 can be placed on the floor of the factory to move the sand charging unit U. Therefore, in another embodiment of the present invention, the model box moving means 5
Is not necessary.
【００２５】さらに、本発明の第１の実施の形態におい
ては、模型箱１２に対して上昇圧接される昇降テ−ブル
６を設けたが、模型箱１２を工場の床に置き前記砂投入
充填ユニットＵを上下に移動させることもできる。した
がって、本発明の別の実施の形態では、昇降テ−ブル６
は必ずしも必要ではない。Further, in the first embodiment of the present invention, the elevating table 6 which is brought into pressure contact with the model box 12 is provided. However, the model box 12 is placed on the floor of the factory and the sand charging is performed. It is also possible to move the unit U up and down. Therefore, in another embodiment of the present invention, the lifting table 6
Is not necessary.
【００２６】本発明の第１の実施の形態においては、予
め計量された鋳物砂を第１投入量として鋳型キャビティ
９に落下投入したが、砂投入ホッパ１ａ等に鋳物砂計量
手段を設け、鋳物砂を投入しながらその投入量を計測し
てもよい。また、経験的に鋳物砂を計量できれば、本発
明の別の実施の形態では、鋳物砂計量手段は必ずしも必
要ではない。In the first embodiment of the present invention, the pre-measured molding sand was dropped into the mold cavity 9 as the first charging amount, but the molding sand measuring means is provided in the sand charging hopper 1a and the like. The amount of sand may be measured while throwing in sand. Further, if the foundry sand can be empirically measured, the foundry sand measuring means is not always necessary in another embodiment of the present invention.
【００２７】本発明の第１の実施の形態においては、次
に、鋳物砂投入手段１、減圧手段２及び大気導入手段３
が中空容器Ｖを介して一体になって昇降フレ−ム１０に
取り付けられた砂投入充填ユニットＵが、昇降用ガイド
レ−ル１３に沿って降下し、上記鋳物砂投入手段１の砂
投入ゲ−ト１ｂの下部と模型箱１２上部の開口部を押圧
連通し、模型箱１２の上部開口と大気導入バルブを具備
する大気導入手段３とを移動密着させたが、押圧手段と
しては、ガイドピン及びガイドブッシュの組合せでも同
様に実現できる。本発明の第１の実施の形態において、
昇降の駆動は、昇降用チェインおよび昇降用ホイ−ルを
介してシリンダの動作で行われるが、駆動手段はこれに
限らない。シリンダは、電気式、エア式、エアオンオイ
ル式、油圧方式等が可能である。In the first embodiment of the present invention, next, foundry sand charging means 1, depressurizing means 2 and atmosphere introducing means 3 are used.
The sand charging unit U integrally attached to the elevating frame 10 via the hollow container V descends along the elevating guide rail 13 and the sand charging gage of the casting sand charging means 1 described above. The lower part of the model 1b and the opening in the upper part of the model box 12 are pressed and communicated with each other, and the upper part opening of the model box 12 and the atmosphere introducing means 3 having an atmosphere introducing valve are brought into close contact with each other. The same can be achieved with a combination of guide bushes. In the first embodiment of the present invention,
The lifting is driven by the operation of the cylinder via the lifting chain and the lifting wheel, but the driving means is not limited to this. The cylinder can be an electric type, an air type, an air-on-oil type, a hydraulic type, or the like.
【発明の効果】本発明は上記の説明から明らかなよう
に、本発明の鋳型造型装置は、砂投入ホッパ−の下部に
設けられるとともに開閉可能に設けられた砂投入ゲ−ト
を具備することにより鋳物砂を供給する鋳物砂投入手段
と、前記鋳型キャビティを画成する模型箱内の空気を真
空ポンプにより減圧する減圧手段と、前記鋳物砂投入手
段の下方に位置すると共に模型箱の上部開口に移動密着
可能に設けられると共に大気導入バルブを具備する大気
導入手段を設けたから、鋳型鋳型が複雑な形状でも、鋳
型キャビティの上向き部分及び狭い部分でも鋳物砂充填
が良好となる。以上のように本発明が業界に与える効果
は著大である。As is apparent from the above description, the present invention provides that the mold making apparatus of the present invention is provided with a sand feeding gate provided below the sand feeding hopper and capable of opening and closing. Means for supplying molding sand by means of, a decompression means for decompressing the air in the model box defining the mold cavity by means of a vacuum pump, and an upper opening of the model box located below the molding sand charging means Since the atmosphere introducing means provided so as to be movable and closely attached to the mold and having the atmosphere introducing valve is provided, the molding sand can be well filled even in a complicated shape of the mold, the upward portion and the narrow portion of the mold cavity. As described above, the effect of the present invention on the industry is remarkable.
【図１】本発明の実施の形態を示す概略図である。FIG. 1 is a schematic diagram showing an embodiment of the present invention.
１ 鋳物砂投入手段 １ａ 砂投入ホッパ− １ｂ 砂投入ゲ−ト ２ 減圧手段 ２ｂ 真空ポンプ ３ 大気導入手段 ３ｂ 大気導入バルブ ４ 混練手段 ５ 模型箱移動手段 ６ 昇降テ−ブル ７ 鋳物砂計量手段 ９ 鋳型キャビティ １２ 模型箱 １３ 昇降用ガイドレール 1 Casting sand feeding means 1a Sand feeding hopper-1b Sand feeding gate 2 Decompression means 2b Vacuum pump 3 Atmosphere introducing means 3b Atmosphere introducing valve 4 Kneading means 5 Model box moving means 6 Elevating table 7 Foundry sand measuring means 9 Mold Cavity 12 Model box 13 Elevating guide rail
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成８年２月９日[Submission date] February 9, 1996
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図２[Correction target item name] Figure 2
【補正方法】追加[Correction method] Added
【補正内容】[Correction contents]
【図２】 本発明の実施の形態を示す拡大概略図であ
る。FIG. 2 is an enlarged schematic diagram showing an embodiment of the present invention.
Claims (9)
型キャビティに鋳物砂を投入して鋳型を造型する鋳型造
型装置において、 砂投入ホッパ−１ａの下部に設けられるとともに開閉可
能に設けられた砂投入ゲ−ト１ｂを具備することにより
鋳物砂を供給する鋳物砂投入手段１と、 前記鋳型キャビティ９を画成する模型箱１２内の空気を
真空ポンプ２ｂにより減圧する減圧手段２と、 前記鋳物砂投入手段１の下方に位置すると共に模型箱１
２の上部開口に移動密着可能に設けられると共に大気導
入バルブ３ａを具備する大気導入手段３と、を具備する
ことを特徴とする鋳型造型装置。1. A mold molding apparatus for molding molding sand by molding molding sand into a molding cavity provided below the molding sand charging means, the molding molding device being provided under the sand charging hopper-1a and being openable and closable. A molding sand introduction means 1 for supplying molding sand by providing a sand introduction gate 1b, a decompression means 2 for decompressing the air in the model box 12 defining the mold cavity 9 by a vacuum pump 2b, The model box 1 is located below the casting sand feeding means 1 and
Atmosphere introducing means 3 which is provided so as to be able to move and adhere to the upper opening of 2 and has an atmosphere introducing valve 3a, and a mold making apparatus.
箱１２の入口に前記鋳物砂投入手段１を押圧連通する押
圧手段を有することを特徴とする請求項１に記載の鋳型
造型装置。2. The mold making apparatus according to claim 1, further comprising a pressing means for pressingly connecting the foundry sand charging means 1 to an entrance of a model box 12 defining the mold cavity 9.
箱１２の入口に前記大気導入手段３を押圧連通する押圧
手段を有することを特徴とする請求項１又は請求項２に
記載の鋳型造型装置。3. The mold making apparatus according to claim 1, wherein the mold box 12 defining the mold cavity 9 has a pressing means for pressing and communicating the atmosphere introducing means 3 with the entrance. .
３の一部を兼ねていることを特徴とする請求項１〜請求
項３のいずれか１つの請求項に記載の鋳型造型装置。4. The mold making apparatus according to claim 1, wherein a part of the decompression unit 2 also serves as a part of the air introduction unit 3.
２と前記大気導入手段３とを中空容器Ｖを介して一体連
通しもって砂投入充填ユニットＵを構成した請求項１に
記載の鋳型造型装置。5. The mold making according to claim 1, wherein the casting sand feeding means 1, the depressurizing means 2 and the atmosphere introducing means 3 are integrally connected to each other through a hollow container V to constitute a sand feeding and filling unit U. apparatus.
４が設けられたことを特徴とする請求項１〜請求項５の
いずれか１つの請求項に記載の鋳型造型装置。6. The mold making apparatus according to claim 1, wherein a kneading means 4 is provided above the foundry sand charging means.
動手段５が設けられたことを特徴とする請求項１〜請求
項６のいずれか１つの請求項に記載の鋳型造型装置。7. The mold making apparatus according to claim 1, further comprising a model box moving means 5 provided below the foundry sand feeding means.
れて前記減圧手段２に連通される昇降テ−ブル６が設け
られたことを特徴とする請求項１〜請求項７のいずれか
１つの請求項に記載の鋳型造型装置。8. The elevating table 6 provided below the foundry sand charging means 1 and in communication with the depressurizing means 2 is provided. Mold making apparatus according to one of the claims.
を計量する鋳物砂計量手段７を具備する請求項１〜請求
項８のいずれか１つの請求項に記載の鋳型造型装置。9. The casting mold making apparatus according to claim 1, further comprising a foundry sand measuring means 7 for measuring the foundry sand to a pre-calculated amount of the foundry sand.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28685595A JP3262199B2 (en) | 1995-10-06 | 1995-10-06 | Mold making equipment |
| CN96122460A CN1099927C (en) | 1995-09-08 | 1996-09-08 | Casting equipment |
| EP96114410A EP0761342B1 (en) | 1995-09-08 | 1996-09-09 | Molding apparatus and method |
| DE69620838T DE69620838T2 (en) | 1995-09-08 | 1996-09-09 | Molding machine and molding process |
| US08/707,875 US5957189A (en) | 1995-09-08 | 1996-09-09 | Apparatus and method for sequentially feeding quantities of sand into a mold space and subjecting the space to evacuation and then pressure increase after each feed |
| TW085110982A TW368441B (en) | 1995-09-08 | 1996-09-09 | Molding apparatus |
| KR1019960039422A KR970014882A (en) | 1995-09-08 | 1996-09-09 | Casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28685595A JP3262199B2 (en) | 1995-10-06 | 1995-10-06 | Mold making equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09103843A true JPH09103843A (en) | 1997-04-22 |
| JP3262199B2 JP3262199B2 (en) | 2002-03-04 |
Family
ID=17709909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28685595A Expired - Fee Related JP3262199B2 (en) | 1995-09-08 | 1995-10-06 | Mold making equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3262199B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2954194A1 (en) * | 2009-12-23 | 2011-06-24 | Fond De Brousseval Et Montreuil | Supplying foundry sand in receiver frame of automatic mold preparing machine, comprises loading feed hopper with sand after closing upper door and loading lower compartment, and pouring sand in frame through hopper |
| CN103286261A (en) * | 2013-07-03 | 2013-09-11 | 江苏鹏飞海太机械有限公司 | Stranding cage type mobile sand mixing system |
-
1995
- 1995-10-06 JP JP28685595A patent/JP3262199B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2954194A1 (en) * | 2009-12-23 | 2011-06-24 | Fond De Brousseval Et Montreuil | Supplying foundry sand in receiver frame of automatic mold preparing machine, comprises loading feed hopper with sand after closing upper door and loading lower compartment, and pouring sand in frame through hopper |
| CN103286261A (en) * | 2013-07-03 | 2013-09-11 | 江苏鹏飞海太机械有限公司 | Stranding cage type mobile sand mixing system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3262199B2 (en) | 2002-03-04 |
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