JP4618565B2 - Foundry sand filling equipment - Google Patents
Foundry sand filling equipment Download PDFInfo
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- JP4618565B2 JP4618565B2 JP2007166623A JP2007166623A JP4618565B2 JP 4618565 B2 JP4618565 B2 JP 4618565B2 JP 2007166623 A JP2007166623 A JP 2007166623A JP 2007166623 A JP2007166623 A JP 2007166623A JP 4618565 B2 JP4618565 B2 JP 4618565B2
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Description
本発明は鋳物砂充填装置に関する。さらに詳しくは、振動モータを用いた振動によって鋳枠に鋳物砂を充填させる鋳物砂充填装置に関する。 The present invention relates to a foundry sand filling apparatus. More specifically, the present invention relates to a foundry sand filling device that fills a casting frame with foundry sand by vibration using a vibration motor.
従来より、粘結剤を全く含まない鋳物砂を使用する消失模型鋳造法や、少量の粘結剤を含む鋳物砂を使用する自硬性鋳型においては、鋳枠内に鋳物砂を充分、かつ効率よく充填する装置は公知である。
たとえば特許文献１には、鋳枠の固定された振動テーブルの上面における該鋳枠の両側位置に、回転軸を同一線上に位置させて２個の振動モータを装着し、該振動モータの回転軸線が振動装置全体のほぼ重心を通るようにした鋳物砂充填用振動装置が記載されている。
この装置の概略図を図４〜５に示す。この装置では、振動テーブル５１に装着された２個の振動モータ５２の回転軸が同じ回転方向（またはともに逆回転方向）に回転する場合、２個の振動モータ５２を結ぶ線５３と直角方向（図４で南北方向）Ｄに鋳物砂５４の移動があり、模型５５の横穴部Ａ１、Ａ３の鋳物砂充填は良好である。なお、図４〜５において、符号５６は基台、５７は空気ばね、５８は鋳枠である。
Conventionally, the disappearance model casting method that uses foundry sand that does not contain any binder, and the self-hardening mold that uses foundry sand that contains a small amount of binder, make the foundry sand sufficiently and efficient. Well-filled devices are known.
For example, in Patent Document 1, two vibration motors are mounted on both sides of the casting frame on the upper surface of the vibration table to which the casting frame is fixed, with the rotation shafts positioned on the same line, and the rotation axis of the vibration motor. Describes a foundry sand filling vibration device that passes through the approximate center of gravity of the entire vibration device.
Schematic diagrams of this device are shown in FIGS. In this apparatus, when the rotation shafts of the two vibration motors 52 mounted on the vibration table 51 rotate in the same rotation direction (or both in the reverse rotation direction), a direction perpendicular to the line 53 connecting the two vibration motors 52 ( There is a movement of the foundry sand 54 in the north-south direction D in FIG. 4, and the foundry sand filling of the side holes A1 and A3 of the model 55 is good. 4-5, the code | symbol 56 is a base, 57 is an air spring, 58 is a cast frame.
しかし、振動モータ５２を結ぶ線５３の方向（図４における東西方向）には鋳物砂５４の移動は少なく、模型５５の横穴部Ａ２、Ａ４の充填は充分ではないという問題を残している。
実用面では、これを回避するため、模型の配置を図４において平面的に４５°ずらして（横穴部が東北、東南、西北、南西の方向になる位置）配置し、充填不具合を解消していた。
しかし、製品形状の複雑化によってはこの問題を回避できない場合が生じるという問題がある。
そこで、本発明は、叙上の事情に鑑み、鋳枠内に鋳物砂を効率よく、かつ充分に充填することができる鋳物砂充填装置を提供することを目的とする。
However, there is little movement of the foundry sand 54 in the direction of the line 53 connecting the vibration motors 52 (the east-west direction in FIG. 4), and there remains a problem that the filling of the side hole portions A2 and A4 of the model 55 is not sufficient.
In practical terms, in order to avoid this, the placement of the model is shifted by 45 ° in FIG. 4 (positions where the side holes are in the directions of Tohoku, Southeast, Northwest and Southwest) to eliminate the filling problem. It was.
However, there is a problem that this problem cannot be avoided depending on the complexity of the product shape.
Therefore, in view of the above circumstances, an object of the present invention is to provide a foundry sand filling apparatus that can efficiently and sufficiently fill foundry sand in a casting frame.
本発明の鋳物砂充填装置は、振動テーブルに載置した鋳枠に振動モータにより振動を付与して鋳物砂を充填する鋳物砂充填装置であって、前記鋳枠の両側部位に振動モータの回転軸が互いに振動全体の概重心を通る水平一直線上に配置される円振動を付与する２個の振動モータと、この円振動を付与する２個の振動モータを結ぶ線に振動全体の概重心で直交する水平一直線上における前記鋳枠の他の両側部位に振動モータの回転軸が互いに垂直方向を向くように配置される水平振動を付与する２個の振動モータとを備え、前記円振動を付与する２個の振動モータの回転方向は同じ方向であり、前記水平振動を付与する２個の振動モータの回転方向はそれぞれ反対方向であることを特徴としている。 The foundry sand filling apparatus according to the present invention is a foundry sand filling apparatus that fills the foundry sand by applying vibration to the foundry frame placed on the vibration table by a vibration motor, and rotates the vibration motor on both sides of the foundry frame. The two vibration motors that give circular vibration are arranged on a horizontal straight line whose axes pass through the approximate center of gravity of the whole vibration, and the line connecting the two vibration motors that give this circular vibration is the approximate center of gravity of the whole vibration. Two vibration motors for applying horizontal vibration, which are arranged so that the rotation axes of the vibration motors face each other in the vertical direction on the other side portions of the casting frame on an orthogonal horizontal straight line, and provide the circular vibration The rotation directions of the two vibration motors are the same, and the rotation directions of the two vibration motors that apply the horizontal vibration are opposite directions .
本発明によれば、振動モータの回転軸が互いに振動全体の概重心を通る水平一直線上に配置される２個の振動モータにより円振動を付与し、振動モータの回転軸が互いに垂直方向を向くように配置される２個の振動モータにより水平（横）振動を付与することにより、鋳枠内に鋳物砂を効率よく、かつ充分に充填することができる。
たとえば鋳枠に埋設される模型を平面的に見た場合、東西南北４方向の模型に形成された横穴部への鋳物砂を効率よく、かつ充分に充填することができる。
According to the present invention, circular vibrations are applied by two vibration motors arranged on a horizontal straight line that passes through the approximate center of gravity of the entire vibration, and the rotation axes of the vibration motors face each other in the vertical direction. By applying horizontal (lateral) vibration by the two vibration motors arranged in this manner, the casting sand can be efficiently and sufficiently filled in the casting frame.
For example, when the model embedded in the casting frame is viewed in plan, the casting sand can be efficiently and sufficiently filled into the side hole formed in the model in the four directions of east, west, south, and north.
本発明は、粘結剤を全く含まない鋳物砂を使用する消失模型鋳造法や、少量の粘結剤を含む鋳物砂を使用する自硬性鋳型における砂充填に用いることができる。
以下、添付図面に基づいて本発明の鋳物砂充填装置を説明する。図１〜２に示されるように、本発明の一実施の形態にかかわる鋳物砂充填装置は、基台１、空気バネ２、該基台１に空気バネ２を介して弾性支持される振動テーブル３、該振動テーブル３に載置される鋳枠４、垂直面円振動用２個の振動モータＭ１および水平振動用２個の振動モータＭ２を備えている。前記振動テーブル３上の鋳枠４内に横穴部Ａ１〜Ａ４を有する模型５が埋設され、鋳物砂６が充填されている。
前記２個の振動モータＭ１は、振動全体の概重心を通る水平一直線Ｌ１上に振動モータの回転軸（モータ軸）Ｍ１ａが配置され、かつ鋳枠４の両側部位（図１の南北方向）にそれぞれ配置されている。
また、前記２個の振動モータＭ２は、回転軸（モータ軸）Ｍ２ａがどちらも垂直方向で、振動全体の概重心を通る水平一直線上であって、鋳枠４の両側部位（図１の東西方向）にそれぞれ配置され、かつ前記２個の振動モータＭ１を結ぶ線Ｌ１が２個の振動モータＭ２を結ぶ線Ｌ２と直角になるように配置されている。
また、前記２個の振動モータＭ１の回転方向Ｒ１は同じ方向（どちらも時計方向またはどちらも反時計方向）であり、前記２個の振動モータＭ２の回転方向はそれぞれ反対方向Ｒ２である。
INDUSTRIAL APPLICABILITY The present invention can be used for disappearance model casting using casting sand containing no binder, or for filling sand in a self-hardening mold using casting sand containing a small amount of binder.
The casting sand filling apparatus of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 and 2, a foundry sand filling apparatus according to an embodiment of the present invention includes a base 1, an air spring 2, and a vibration table elastically supported by the base 1 via the air spring 2. 3. A casting frame 4 placed on the vibration table 3, two vibration motors M1 for vertical surface circular vibration, and two vibration motors M2 for horizontal vibration are provided. A model 5 having lateral hole portions A1 to A4 is embedded in a casting frame 4 on the vibration table 3 and filled with foundry sand 6.
In the two vibration motors M1, the rotation shaft (motor shaft) M1a of the vibration motor is disposed on a horizontal straight line L1 passing through the approximate center of gravity of the entire vibration, and the both sides of the casting frame 4 (in the north-south direction in FIG. 1). Each is arranged.
Further, the two vibration motors M2 have a rotation axis (motor shaft) M2a in a vertical direction and are on a horizontal straight line passing through the approximate center of gravity of the entire vibration, and are located on both sides of the casting frame 4 (east-west in FIG. 1). And the line L1 connecting the two vibration motors M1 is arranged to be perpendicular to the line L2 connecting the two vibration motors M2.
Further, the rotation directions R1 of the two vibration motors M1 are the same direction (both clockwise or both counterclockwise), and the rotation directions of the two vibration motors M2 are opposite directions R2.
なお、前記振動全体の概重心とは、弾性支持された前記振動テーブル３、２個の振動モータＭ１、２個の振動モータＭ２、鋳枠４、模型５および該鋳枠４内の鋳物砂６を含む振動装置全体の概重心のことである。また、概重心としたのは、正確な振動全体の重心位置を把握することは難しいからである。
また、前記鋳枠４や模型５の交換およびそれに伴う鋳物砂の重量変化により重心位置が変更する場合に備えて、重心位置合わせのための高さ調整機構を介して前記振動モータＭ１、Ｍ２を振動テーブル３に設置するのが好ましい。
また、前記振動モータＭ１、Ｍ２としては、たとえばモータの回転軸に取り付けたアンバランスウエイトの加振力により、振動を発生させるアンバランスウェイト式振動モータを用いることができる。
The approximate center of gravity of the entire vibration is the elastically supported vibration table 3, two vibration motors M 1, two vibration motors M 2, casting frame 4, model 5, and foundry sand 6 in the casting frame 4. Is the approximate center of gravity of the entire vibration device including The reason why the approximate center of gravity is used is that it is difficult to accurately determine the position of the center of gravity of the entire vibration.
Further, in preparation for the case where the center of gravity position is changed due to the replacement of the casting frame 4 or the model 5 and the accompanying weight change of the foundry sand, the vibration motors M1, M2 are connected via a height adjusting mechanism for center of gravity positioning. It is preferable to install on the vibration table 3.
Further, as the vibration motors M1 and M2, for example, an unbalanced weight type vibration motor that generates vibrations by an excitation force of an unbalanced weight attached to a rotation shaft of the motor can be used.
つぎに本実施の形態の鋳物砂充填装置を用いた実施例を説明するが、本発明はかかる実施例に限定されるものではない。
本実施例では、鋳物砂として樹脂を若干添加する一般的な硅砂を使用した自硬性砂を用いた。表1に本実施例による図３の東西南北４方向の模型の横穴部Ａ１〜Ａ４の各部の砂充填性の測定結果の一例を示す。また、同様に表１に手込め造型による砂充填（比較例１）および図４〜５に示す従来の充填装置（比較例２）を用いた砂充填の実験結果も示す。
Next, examples using the foundry sand filling apparatus of the present embodiment will be described, but the present invention is not limited to such examples.
In this example, self-hardening sand using general dredged sand to which resin is slightly added is used as foundry sand. Table 1 shows an example of the measurement result of the sand filling property of each part of the lateral hole parts A1 to A4 of the model in the four directions of east, west, south, and north in FIG. Similarly, Table 1 also shows the results of sand filling experiments using hand-made molding (Comparative Example 1) and sand filling using the conventional filling apparatus (Comparative Example 2) shown in FIGS.
また、従来の充填装置を用いた振動造型では、本実施の形態の振動モータＭ１に相当する２個の振動モータ５２のみでは図３の東西方向Ｄ１への砂の流れが生じるが、南北方向Ｄ２の模型５５の横穴部Ａ１、Ａ３の砂充填性は悪く、横穴部Ａ１、Ａ３は充填できなかった（比較例２）。
これに対して、本実施例では、図３に示されるように、２個の振動モータＭ１に２個の振動モータＭ２を追加するとともに、この回転軸Ｍ２ａを垂直にし、２個の振動モータＭ１を結ぶ線Ｌ１に２個の振動モータＭ２を結ぶ線Ｌ２が直角になるように配置したので、図３の東西方向Ｄ１への流れとともに南北方向Ｄ２への砂の流れが発生し、充填性が改善され、模型５の横穴部Ａ１、Ａ３の砂充填性が良くなり、全体として横穴部Ａ１〜Ａ４のいずれも砂充填性が良くなった。
以上説明したように、本発明の場合、実施例１〜３のいずれの振動でもすべての横穴部Ａ１〜Ａ４は良好な充填性を示している。なお、とくに好ましいのは実施例２または実施例３の振動である。
Further, in the vibration molding using the conventional filling device, the sand flow in the east-west direction D1 in FIG. 3 occurs only with the two vibration motors 52 corresponding to the vibration motor M1 of the present embodiment, but the north-south direction D2 The sand hole filling ability of the side hole portions A1 and A3 of the model 55 was poor, and the side hole portions A1 and A3 could not be filled (Comparative Example 2).
On the other hand, in this embodiment, as shown in FIG. 3, two vibration motors M2 are added to the two vibration motors M1, and the rotation shaft M2a is made vertical so that the two vibration motors M1. Since the line L2 connecting the two vibration motors M2 is perpendicular to the line L1 connecting the two, the flow of sand in the north-south direction D2 occurs along with the flow in the east-west direction D1 in FIG. As a result, the sand filling properties of the side hole portions A1 and A3 of the model 5 were improved, and the sand hole filling properties of all the side hole portions A1 to A4 were improved as a whole.
As described above, in the case of the present invention, all of the lateral hole portions A1 to A4 exhibit good filling properties in any vibration of Examples 1 to 3. Particularly preferred is the vibration of Example 2 or Example 3.
Ａ１、Ａ２、Ａ３、Ａ４ 横穴部
Ｍ１ 垂直面円振動用振動モータ
Ｍ１ａ、Ｍ２ａ 回転軸
Ｍ２ 水平振動用振動モータ
１ 基台
２ 空気バネ
３ 振動テーブル
４ 鋳枠
５ 模型
６ 鋳物砂
A1, A2, A3, A4 Horizontal hole M1 Vibration motor M1a, M2a for vertical surface circular vibration Rotary shaft M2 Vibration motor 1 for horizontal vibration 1 Base 2 Air spring 3 Vibration table 4 Cast frame 5 Model 6 Foundry sand
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| JP2007166623A JP4618565B2 (en) | 2007-06-25 | 2007-06-25 | Foundry sand filling equipment |
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| JP2007166623A JP4618565B2 (en) | 2007-06-25 | 2007-06-25 | Foundry sand filling equipment |
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| JP4618565B2 true JP4618565B2 (en) | 2011-01-26 |
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| CN106955977A (en) * | 2016-01-12 | 2017-07-18 | 苏州苏铸成套装备制造有限公司 | A kind of controllable plus sand multi-angle plain bumper |
| CN113664164B (en) * | 2021-07-13 | 2023-04-14 | 南通凯斯辛普森机械科技有限公司 | Controllable random angle plain bumper |
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| JP3151694B2 (en) * | 1993-07-12 | 2001-04-03 | 太洋マシナリー株式会社 | Vibration device for casting sand filling table |
| JP3366953B2 (en) * | 1993-11-16 | 2003-01-14 | 太洋マシナリー株式会社 | 3D vibrating device for casting sand filling |
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