JP3410434B2 - Method and apparatus for filling casting sand - Google Patents
Method and apparatus for filling casting sandInfo
- Publication number
- JP3410434B2 JP3410434B2 JP2000189151A JP2000189151A JP3410434B2 JP 3410434 B2 JP3410434 B2 JP 3410434B2 JP 2000189151 A JP2000189151 A JP 2000189151A JP 2000189151 A JP2000189151 A JP 2000189151A JP 3410434 B2 JP3410434 B2 JP 3410434B2
- Authority
- JP
- Japan
- Prior art keywords
- sand
- filling
- frame
- hollow chamber
- molding
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋳型造型空間に鋳
物砂を充填するのに好適な方法及びその装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus suitable for filling a molding space with molding sand.
【０００２】[0002]
【従来の技術】従来、鋳物砂を鋳型造型空間に充填する
方法としては、特開昭５２−２０９２８号、特開昭５２
−２０９２９号公報等で公知のように、砂ホッパ内にお
いて高圧圧縮空気により鋳物砂を鋳型造型空間に吹込み
充填するのが一般的である。2. Description of the Related Art Conventionally, as a method of filling molding sand with molding sand, Japanese Patent Laid-Open No. 20928/1982 and Japanese Patent Laid-Open No. 52928/1982.
As is known from Japanese Patent Publication No. -20929, etc., it is general to blow and fill molding sand with high-pressure compressed air into a molding space in a sand hopper.
【０００３】[0003]
【発明が解決しようとする課題】しかし上記のような鋳
物砂の充填では、鋳物砂を高圧圧縮空気と共に吹込み充
填させるため、鋳物砂がノズルに砂詰りすることが多く
なり、砂詰りの除去のメンテナンスを度々行わなければ
ならないという問題があった。また、鋳型造型空間にお
けるパタ−ンプレ−トの複雑形状部への砂充填が不十分
であるという問題もあった。さらに鋳物砂の充填時に大
きな騒音が発生するという問題があった。本発明は上記
の問題に鑑みて成されたもので、ノズルの砂詰りをなく
して充填を行うことができると共に鋳型造型空間におけ
るパタ−ンプレ−トの複雑形状部の砂充填密度を部分的
に調整することができ、かつ鋳物砂充填時の騒音を減少
させることができる鋳物砂の充填方法及びその装置を提
供することを目的とする。However, in the filling of molding sand as described above, since the molding sand is blown and filled together with the high-pressure compressed air, the molding sand often clogging the nozzle, and the clogging is removed. There was a problem that maintenance had to be performed frequently. Further, there is also a problem that sand filling is insufficient in the complicated shape portion of the pattern plate in the mold making space. Further, there is a problem that a large noise is generated when the molding sand is filled. The present invention has been made in view of the above problems, and it is possible to perform filling without clogging of the nozzle sand and to partially fill the sand filling density of the complex shaped portion of the pattern plate in the mold molding space. It is an object of the present invention to provide a molding sand filling method and a molding sand filling apparatus that can be adjusted and can reduce noise during molding sand filling.
【０００４】[0004]
【課題を解決するのための手段】上記の目的を達成する
ために本発明における鋳物砂の充填方法は、パタ−ンプ
レ−トと；このパタ−ンプレ−トの外周を包囲して上下
摺動する枠状の抜型フレ−ムと；この抜型フレ−ム上に
載置可能な鋳枠と；この鋳枠上に載置可能な盛枠と；上
部が砂貯蔵室に、中部から下方に向かって複数の多数孔
板を具備した二股の下細り状中空室に、さらに下部が該
下細り状中空室の下端に連通したノズルにそれぞれ構成
された砂充填手段と；前記砂充填手段の下部に装着され
た昇降可能な複数個のスクイズフットと；によって画成
された鋳型造型空間に、前記砂充填手段により鋳物砂を
充填する方法であって、鋳物砂を前記鋳型造型空間に加
圧エヤ−により充填する際に、前記複数の多数孔板から
前記二股の下細り状中空室内にそれぞれ適宜圧縮エヤ−
を噴出させて前記二股の下細り状中空室内の鋳物砂を浮
遊流動化させるエヤレ−ションを成すと共に前記盛枠内
からの排気量を制御することにより前記パタ−ンプレ−
トからの排気量を制御し、これにより前記鋳型造型空間
における鋳物砂の充填密度を部分的に調整することを特
徴とする。また、前記鋳物砂を鋳型造型空間に充填させ
る加圧エヤ−の圧力が０．０５〜０．１８ＭＰａである
ことを特徴とする。さらに、前記エヤレ−ションを成す
際に前記複数の多数孔板から前記二股の下細り状中空室
内にそれぞれ適宜噴出させる圧縮エヤ−の圧力が０．０
５〜０．１８ＭＰａであることを特徴とする。本発明に
よれば、ノズルの砂詰まりを無くして鋳物砂を効率よく
充填することができると共に鋳型造型空間におけるパタ
−ンプレ−トの複雑形状部の砂充填密度を部分的に調整
することができる。また、低圧のエヤ−で鋳物砂の充填
が可能であると共に鋳物砂充填時の騒音を減少させるこ
とができる。In order to achieve the above object, a method for filling molding sand according to the present invention comprises a pattern plate and a vertical slide around the outer periphery of the pattern plate. A frame-shaped die-cutting frame; a casting frame that can be placed on the die-cutting frame; an embedment frame that can be placed on the casting frame; an upper part is a sand storage chamber, and a middle part is a lower part. And a plurality of multi-hole plates provided in the bifurcated lower tapered hollow chamber, and a lower portion of the lower hollow hollow chamber is connected to the lower end of the lower hollow hollow chamber, respectively, sand filling means; A method of filling molding sand into the molding space defined by a plurality of squeeze feet that can be moved up and down; When filling with, from the plurality of multi-hole plates Each appropriate compression Eya the hollow space -
Is sprayed to make the casting sand in the narrowed hollow chamber of the bifurcation float and fluidize, and the exhaust amount from the filling frame is controlled to control the pattern play.
The exhaust amount from the mold is controlled so that the filling density of the molding sand in the mold molding space is partially adjusted. Further, the pressure of the pressure air for filling the molding sand with the molding sand is 0.05 to 0.18 MPa. Furthermore, the pressure of the compression air that is appropriately ejected from the plurality of multi-hole plates into the downward tapered hollow chamber of the bifurcation is 0.0 when the air leakage is performed.
It is characterized by being 5 to 0.18 MPa. According to the present invention, it is possible to eliminate clogging of the nozzle sand and efficiently fill the molding sand with the sand, and to partially adjust the sand filling density of the complicated shape portion of the pattern plate in the mold molding space. .. Further, it is possible to fill the molding sand with a low-pressure air and to reduce noise when the molding sand is filled.
【０００５】上記の目的を達成するために本発明におけ
る鋳物砂の充填装置は、パタ−ンプレ−トと；このパタ
−ンプレ−トの外周を包囲して上下摺動する枠状の抜型
フレ−ムと；この抜型フレ−ム上に載置可能な鋳枠と；
この鋳枠上に載置可能な盛枠と；上部が砂貯蔵室に、中
部から下方に向かって複数の多数孔板を具備した二股の
下細り状中空室に、さらに下部が該下細り状中空室の下
端に連通したノズルにそれぞれ構成された砂充填手段
と；前記砂充填手段の下部に装着された昇降可能な複数
個のスクイズフットと；によって画成された鋳型造型空
間に、前記砂充填手段により鋳物砂を充填する装置であ
って、前記複数の多数孔板にそれぞれ装着されて前記二
股の下細り状中空室内に向けて圧縮エヤ−を噴出する圧
縮エヤ−噴出手段と、前記盛枠に装着されて盛枠内から
の排気量を制御する排気制御手段と、を備えたことを特
徴とする。本発明によれば、ノズルの砂詰まりを無くし
て鋳物砂を効率よく充填することができると共に鋳型造
型空間におけるパタ−ンプレ−トの複雑形状部の砂充填
密度を部分的に調整することができる。In order to achieve the above object, the casting sand filling apparatus according to the present invention comprises a pattern plate; a frame-shaped die-cutting frame which surrounds the outer periphery of the pattern plate and slides vertically. And a frame that can be placed on this die-cut frame;
A filling frame that can be placed on this casting frame; a sand storage chamber at the upper part, a bifurcating tapered hollow chamber provided with a plurality of perforated plates downward from the middle part, and a lower part at the lower tapered part. In the mold forming space defined by: sand filling means respectively configured to nozzles communicating with the lower end of the hollow chamber; a plurality of vertically movable squeeze feet mounted below the sand filling means; A device for filling foundry sand by a filling means, which is mounted on each of the plurality of multi-hole plates and ejects a compression air toward the bifurcated downward tapered hollow chamber; Exhaust control means mounted on the frame for controlling the amount of exhaust from the filling frame. According to the present invention, it is possible to eliminate clogging of the nozzle sand and efficiently fill the molding sand with the sand, and to partially adjust the sand filling density of the complicated shape portion of the pattern plate in the mold molding space. .
【０００６】また、上記の目的を達成するために本発明
における鋳物砂の充填装置は、前記二股の下細り状中空
室を形成する前記複数の多数孔板を具備した外側板が垂
直に設けられていると共に前記複数の多数孔板を具備し
た内側板が前記砂充填手段の下部とでほぼ二等辺三角形
を形成して設けられていることを特徴とする。本発明に
よれば、左右双方の下細り状中空室内に鋳物砂を均等に
入れることができると共に鋳物砂を流れやすくすること
ができる。Further, in order to achieve the above object, in the foundry sand filling apparatus according to the present invention, an outer plate having the plurality of multi-hole plates forming the forked lower hollow chamber is vertically provided. In addition, the inner plate having the plurality of multi-hole plates is provided so as to form a substantially isosceles triangle with the lower portion of the sand filling means. According to the present invention, it is possible to evenly fill the molding sand into both the left and right downward tapered hollow chambers and to facilitate the flow of the molding sand.
【０００７】さらに、上記の目的を達成するために本発
明における鋳物砂の充填装置は、前記複数の多数孔板を
具備した内側板と前記砂充填手段の下部とで形成された
ほぼ二等辺三角形の底角の角度が使用する鋳物砂の安息
角以上であることを特徴とする。本発明によれば、二股
の下細り状中空室内の鋳物砂を流れやすくすることがで
きると共に該下細り状中空室内の砂詰まりを防止するこ
とができる。Further, in order to achieve the above-mentioned object, the foundry sand filling apparatus according to the present invention is a substantially isosceles triangle formed by an inner plate having a plurality of multi-hole plates and a lower part of the sand filling means. It is characterized in that the angle of the bottom angle is greater than the repose angle of the foundry sand used. According to the present invention, it is possible to facilitate the flow of foundry sand in a bifurcated downward tapered hollow chamber and prevent clogging of sand in the downward tapered hollow chamber.
【０００８】加えて、上記の目的を達成するために本発
明における鋳物砂の充填装置は、前記ノズルの内側面が
垂直であると共に外側面がノズル下方に向かうにしたが
ってノズル内側面に近くなる傾斜面であることを特徴と
する。本発明によれば、ノズル内側面及び外側面が垂直
である場合はノズル内側面及び外側面と鋳物砂との側面
抵抗が大きいためスクイズ時の鋳物砂の圧縮によってノ
ズルを砂詰まりさせることがあるのに対し、ノズル外側
面がノズル下方に向かうにしたがってノズル内側面に近
くなる傾斜面になっているため、ノズル上方に向かうほ
ど圧縮されようとする鋳物砂の逃げる空間が広く、ノズ
ル外側面と鋳物砂との側面抵抗も小さいのでスクイズ時
の鋳物砂の圧縮によってノズルを砂詰まりさせることが
無い。そのため、次回の鋳物砂充填時に悪影響を与える
ことが無い。また、鋳型造型後、造型された鋳型の上面
からノズルが離れても鋳物砂をこぼすこと無くノズル内
で保持することができる。さらに、鋳物砂を充填むら無
く効率よく充填することができる。In addition, in order to achieve the above-mentioned object, in the molding sand filling apparatus according to the present invention, the inner surface of the nozzle is vertical and the outer surface is inclined toward the inner surface of the nozzle as it goes downward. It is characterized by being a surface. According to the present invention, when the inner side surface and the outer side surface of the nozzle are vertical, the side surface resistance between the inner side surface and the outer side surface of the nozzle and the foundry sand is large, so the nozzle may be clogged with sand due to the compression of the foundry sand during squeeze. On the other hand, since the outer surface of the nozzle is an inclined surface that is closer to the inner surface of the nozzle as it goes downward, the space for escape of the molding sand, which is about to be compressed, is wider toward the upper side of the nozzle. Since the side resistance to the molding sand is also small, the nozzle is not clogged with the molding sand when it is squeezed. Therefore, there is no adverse effect at the time of filling the molding sand next time. Further, after the molding of the mold, even if the nozzle is separated from the upper surface of the molded mold, the molding sand can be held in the nozzle without spilling. Further, it is possible to efficiently fill the molding sand without uneven filling.
【０００９】[0009]
【発明の実施の形態】以下本発明の実施の形態を図面に
基づいて詳しく説明する。図１において、造型基盤１上
の左右両側に枠セットシリンダ２、２が上向きにして立
設されており、該枠セットシリンダ２、２のピストンロ
ッド２Ａ、２Ａ先端間には昇降支持フレ−ム３が架設さ
れている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. In FIG. 1, frame setting cylinders 2, 2 are erected upright on both left and right sides of a molding base 1, and a lifting support frame is provided between the tip ends of the piston rods 2A, 2A of the frame setting cylinders 2, 2. 3 is installed.
【００１０】前記枠セットシリンダ２、２のうちの一方
（図１で左側）下位にはパタ−ン交換装置４の中心部が
水平平面内で回転可能にして支持されており、該パタ−
ン交換装置４の両端部には、パタ−ンプレ−ト５、５Ａ
（上下パタ−ンプレ−ト）を載置したパタ−ンキャリア
６、６Ａが図示されないスプリングにより５ｍｍ程度持
ち上げられた状態でセットされ、該パタ−ンプレ−ト
５、５Ａを前記造型基盤１の中央上部に交互に搬入出さ
せるようにされている。A central portion of a pattern exchanging device 4 is rotatably supported on one of the frame setting cylinders 2 and 2 (on the left side in FIG. 1) so as to be rotatable in a horizontal plane.
The pattern plates 5 and 5A are provided at both ends of the exchange device 4.
The pattern carriers 6 and 6A on which the (upper and lower pattern plates) are placed are set in a state of being lifted by about 5 mm by a spring (not shown), and the pattern plates 5 and 5A are placed at the center of the molding base 1. It is designed to be loaded and unloaded alternately on the upper part.
【００１１】前記パタ−ンキャリア６、６Ａにおけるパ
タ−ンプレ−ト５、５Ａの四隅外側位置には、抜上げシ
リンダ７、７Ａが上向きにして埋設されていて、その先
端には前記パタ−ンプレ−ト５、５Ａの外周を包囲して
上下摺動する枠状の抜型フレ−ム８、８Ａが連結支持さ
れている。なお抜型フレ−ム８、８Ａは、抜上げシリン
ダ７、７Ａの伸長端でパタ−ンプレ−ト５、５Ａの見切
り面から若干上方に突出（図１参照）され、縮引端でパ
タ−ンプレ−ト５、５Ａの見切り面とほぼ同一面になる
ようにされている。Lifting cylinders 7 and 7A are embedded upward at four corner outside positions of the pattern plates 5 and 5A in the pattern carriers 6 and 6A, and the pattern plates are attached to the tip ends thereof. The frame-shaped removal frames 8 and 8A that surround the outer circumferences of the grate 5 and 5A and slide vertically are connected and supported. The extraction frames 8 and 8A project slightly upward from the parting surfaces of the pattern plates 5 and 5A (see FIG. 1) at the extension ends of the lifting cylinders 7 and 7A, and at the contraction ends. -It is designed to be almost flush with the parting planes of g.
【００１２】前記昇降支持フレ−ム３には砂充填手段９
が吊設されており、該砂充填手段９は、上部が砂貯蔵室
１０に、中部から下方に向かって複数の多数孔板１１、
１２を具備した二股の下細り状中空室１３に、さらに下
部が該下細り状中空室１３の下端に連通したノズル１
４、１４にそれぞれ構成されている。また前記砂貯蔵室
１０には、上端にスライドゲ−ト１５により開閉される
砂投入口１６が設けられていると共に上側部に図示され
ない圧縮エヤ−源に連通された切り替え弁１７を介して
加圧エヤ−（例えば、０．０５〜０．１８ＭＰａ）を導
入する給気管１８が連通されている。A sand filling means 9 is provided on the lifting support frame 3.
The sand filling means 9 has a plurality of multi-hole plates 11 from the middle to the bottom, and the sand filling means 9 has an upper part in the sand storage chamber 10.
A nozzle 1 having a bifurcated downward tapered hollow chamber 13 provided with 12 and a lower portion communicating with the lower end of the downward tapered hollow chamber 13.
4 and 14, respectively. In addition, the sand storage chamber 10 is provided with a sand inlet 16 which is opened and closed by a slide gate 15 at the upper end, and is pressurized at the upper side through a switching valve 17 which is connected to a compression air source (not shown). An air supply pipe 18 for introducing an air (for example, 0.05 to 0.18 MPa) is connected.
【００１３】さらに前記下細り状中空室１３は、垂直に
設けられた前記複数の多数孔板１１を具備した外側板３
３と、前記砂充填手段９の下部とでほぼ二等辺三角形を
形成して設けられた前記複数の多数孔板１２を具備した
内側板３４と、で形成されている。また前記ほぼ二等辺
三角形の底角の角度は使用する鋳物砂の安息角（例え
ば、６０度）以上にされている。さらに前記ノズル１
４、１４は、内側面が垂直にされていると共に外側面が
ノズル１４、１４下方に向かうにしたがって内側面に近
くなる傾斜面にされている。Further, the lower tapered hollow chamber 13 has an outer plate 3 provided with the plurality of multi-hole plates 11 provided vertically.
3 and a lower part of the sand filling means 9 and an inner plate 34 provided with the plurality of multi-hole plates 12 provided so as to form an approximately isosceles triangle. Further, the angle of the base angle of the above-mentioned isosceles triangle is set to be equal to or more than the repose angle (for example, 60 degrees) of the foundry sand to be used. Furthermore, the nozzle 1
The inner surface of each of the nozzles 4 and 14 is vertical, and the outer surface of each of the nozzles 14 and 14 is an inclined surface that becomes closer to the inner surface as the nozzles 14 and 14 move downward.
【００１４】また前記砂充填手段９には前記複数の多数
孔板１１、１２にそれぞれ装着されて前記二股の下細り
状中空室１３内に向けて低圧（例えば、０．０５〜０．
１８ＭＰａ）の圧縮エヤ−を噴出する圧縮エヤ−噴出手
段１９が設けられている。該圧縮エヤ−噴出手段１９
は、図２の（イ）、（ロ）に示すように、前記複数の多
数孔板１１とで気密の中空室２０を形成する外側板３３
と、前記中空室２０に切り替え弁２１、２１を介して連
通された図示されない圧縮エヤ−源と、前記複数の多数
孔板１１に穿設された多数の細孔２２と、で構成されて
おり、複数の多数孔板１２とで気密の中空室２０を形成
する内側板３４についても同様に構成されている。さら
に前記砂充填手段９の下部には昇降可能な複数個のスク
イズフット２３が装着されている。Further, the sand filling means 9 is attached to the plurality of multi-hole plates 11 and 12, respectively, and a low pressure (for example, 0.05 to 0.
A compression air jetting means 19 for jetting a compression air of 18 MPa) is provided. The compression air jetting means 19
As shown in FIGS. 2A and 2B, the outer plate 33 that forms the airtight hollow chamber 20 with the plurality of multi-hole plates 11 is formed.
And a compression air source (not shown) communicated with the hollow chamber 20 via the switching valves 21 and 21, and a large number of pores 22 formed in the plurality of multi-hole plates 11. The inner plate 34 that forms the airtight hollow chamber 20 with the plurality of multi-hole plates 12 has the same structure. Further, a plurality of squeeze feet 23 that can be raised and lowered are attached to the lower part of the sand filling means 9.
【００１５】また前記スクイズフット２３及びノズル１
４、１４の群の外周を上下動可能にして包囲する盛枠２
４（図３参照）が、該盛枠２４の左右外側位置において
下向きにして設けられた盛枠シリンダ２５、２５に連結
して配設されている。さらに前記盛枠２４の上部には該
盛枠２４内からの圧縮エヤ−の排気量を制御する排気制
御手段２６が装着されており、該排気制御手段２６は、
前記盛枠２４の上部外周に装着されると共に盛枠２６と
で気密の中空室２７を形成する断面コ字状の枠体２８
と、前記中空室２７を大気に対して開閉する図示されな
い開閉手段と、前記盛枠２４の上部に穿設されたベント
ホ−ル２９、２９と、で構成されている。また前記昇降
支持フレ−ム３における砂充填手段９の左右外側位置に
は、前記スクイズフット２３の下方位置まで伸びるフレ
−ム３０、３０を介して鋳枠３１の搬入出コンベヤ３２
が吊設されている。Further, the squeeze foot 23 and the nozzle 1
Filling frame 2 that surrounds the outer circumference of the group of 4 and 14 by vertically moving
4 (see FIG. 3) is disposed so as to be connected to the filling frame cylinders 25, 25 provided downward at the left and right outside positions of the filling frame 24. Further, an exhaust control means 26 for controlling the exhaust amount of the compression air from the inside of the fill frame 24 is mounted on the top of the fill frame 24.
A frame body 28 having a U-shaped cross section, which is mounted on the outer periphery of the upper portion of the filling frame 24 and forms an airtight hollow chamber 27 with the filling frame 26.
And an opening / closing means (not shown) for opening / closing the hollow chamber 27 with respect to the atmosphere, and vent holes 29, 29 formed in the upper portion of the filling frame 24. Further, in the right and left outer positions of the sand filling means 9 in the elevating and lowering support frame 3, the carry-in / carry-out conveyor 32 of the casting frame 31 through the frames 30, 30 extending to the position below the squeeze foot 23.
Is hung.
【００１６】次にこのように構成されたものの作動を詳
しく説明する。図１は、砂充填手段９内に鋳物砂Ｓが投
入され、スクイズフット２３全体が下方のパタ−ンプレ
−ト５の凹凸に相対して凹凸を形成し、かつ搬入出コン
ベヤ３２に空の鋳枠３１が搬入された状態にある。なお
パタ−ンキャリア６は図示されないスプリングにより５
ｍｍ程度持ち上げられた状態でパタ−ン交換装置４上に
セットされて造型基盤１との間に５ｍｍ程度の隙間があ
る。また抜型フレ−ム８は抜上げシリンダ７、７により
パタ−ンプレ−ト５の見切面から上方に突出された状態
にある。Next, the operation of the thus constructed device will be described in detail. In FIG. 1, the foundry sand S is put into the sand filling means 9, the entire squeeze foot 23 forms an unevenness relative to the unevenness of the lower pattern plate 5, and the unloading conveyor 32 has an empty casting. The frame 31 is in a loaded state. The pattern carrier 6 is connected to the spring 5 by a spring (not shown).
It is set on the pattern exchanging device 4 in a state of being lifted by about mm, and there is a gap of about 5 mm between it and the molding base 1. Further, the removal frame 8 is in a state of being projected upward from the parting surface of the pattern plate 5 by the lifting cylinders 7, 7.
【００１７】この状態でスライドゲ−ト１５を作動させ
て砂投入口１６を閉じた後、盛枠シリンダ２５、２５が
伸長作動して盛枠２４を下降させて鋳枠３１の上面に押
し付け密着させると共に枠セットシリンダ２、２が縮引
作動して鋳枠３１がパタ−ンプレ−ト５の外周で上方に
突出されている抜型フレ−ム８上に押し付けられてパタ
−ンキャリア６を図示されないスプリングに抗して押し
下げ、造型基盤１上に圧着する。この際パタ−ンプレ−
ト５、抜型フレ−ム８、鋳枠３１、盛枠２４、砂充填手
段９、スクイズフット２３で画成する鋳型造型空間は、
スクイズフット２３がパタ−ンプレ−ト５の凹凸に相対
する凹凸形状に形成された状態になる。In this state, the slide gate 15 is operated to close the sand inlet 16, and then the filling frame cylinders 25, 25 are extended to lower the filling frame 24 and press it against the upper surface of the casting frame 31 to bring them into close contact. At the same time, the frame setting cylinders 2 and 2 are contracted to push the molding frame 31 onto the die-cutting frame 8 projecting upward on the outer periphery of the pattern plate 5, so that the pattern carrier 6 is not shown. It is pressed down against the spring and pressed onto the molding base 1. At this time, the pattern play
The mold forming space defined by the mold 5, the die-cutting frame 8, the casting frame 31, the filling frame 24, the sand filling means 9, and the squeeze foot 23 is
The squeeze foot 23 is formed in a concavo-convex shape that faces the concavo-convex shape of the pattern plate 5.
【００１８】次に前記圧縮エヤ−噴出手段１９により、
前記複数の多数孔板１１及び１２から前記二股の下細り
状中空室１３内にそれぞれ適宜低圧の圧縮エヤ−を噴出
させて前記二股の下細り状中空室１３内の鋳物砂Ｓを浮
遊流動化させるエヤレ−ションをさせながら切り替え弁
１７を介して給気管１８から加圧エヤ−を砂充填手段９
に供給して鋳物砂Ｓをエヤ−により鋳型造型空間にノズ
ル１４、１４を介してエヤレ−ション充填する。この
際、エヤレ−ション充填時のエヤ−は、ベントホ−ル２
９、２９又は／及びパタ−ンプレ−ト５の図示されない
ベントホ−ルから排気される。Next, by the compression air jetting means 19,
From each of the multiple hole plates 11 and 12, a low pressure compression air is jetted into the bifurcated downward tapered hollow chamber 13 to make the casting sand S in the bifurcated downward tapered hollow chamber 13 floating and fluidized. The sand filling means 9 is provided with a pressurized air from the air supply pipe 18 through the switching valve 17 while performing an air pollution.
And the molding sand S is supplied by air to the mold forming space through the nozzles 14 and 14 so as to be filled up with the air. At this time, the air at the time of filling the air hole is the vent hole 2
The air is discharged from a vent hole (not shown) of the pattern plate 5, 9, 29 or / and 5.
【００１９】なお、この際、前記排気制御手段２６の図
示されない開閉手段により中空室２７を任意のタイミン
グで適宜開閉し盛枠２４内からのエヤ−の排気量を制御
することにより前記パタ−ンプレ−ト５の図示されない
ベントホ−ルからの排気量を制御することもできる。こ
れにより前記鋳型造型空間におけるパタ−ンプレ−ト５
の複雑形状部の鋳物砂Ｓの充填密度を部分的に調整する
ことができる。この結果、鋳物砂Ｓは前記鋳型造型空間
の隅々にまで所要状態に適確に充填されることとなる。At this time, the opening / closing means (not shown) of the exhaust control means 26 appropriately opens / closes the hollow chamber 27 at an arbitrary timing to control the exhaust amount of air from the filling frame 24, thereby controlling the pattern play. It is also possible to control the exhaust amount from the vent hole (not shown) of the throat 5. As a result, the pattern plate 5 in the molding space is formed.
It is possible to partially adjust the packing density of the molding sand S in the complicated shape part. As a result, the molding sand S can be properly filled into the corners of the molding space in a required state.
【００２０】次に枠セットシリンダ２、２がさらに縮引
作動して盛枠シリンダ２５、２５を縮引させながら昇降
支持フレ−ム３及びこれに支持されている部材を下降さ
せてゆき、スクイズフット２３下面全体が平坦になるま
で鋳物砂Ｓの一次スクイズをすると共にスライドゲ−ト
１５を逆作動させて砂投入口１６を開放する。Next, the frame setting cylinders 2 and 2 are further contracted and retracted, and while the contracted frame cylinders 25 and 25 are contracted, the elevating and lowering support frame 3 and the members supported thereby are lowered to squeeze. The primary squeeze of the foundry sand S is performed until the entire bottom surface of the foot 23 becomes flat, and the slide gate 15 is reversely operated to open the sand inlet 16.
【００２１】次に抜上げシリンダ７、７の作動流体をリ
リ−フする状態に切り替えると共に枠セットシリンダ
２、２が一次スクイズより高い圧力で縮引作動をするこ
とにより、鋳枠３１、盛枠２４、スクイズフット２３等
が一体となって下降し鋳物砂Ｓ全体を二次スクイズす
る。Next, the working fluid of the lifting cylinders 7 and 7 is switched to a state of relieving, and the frame set cylinders 2 and 2 perform contraction operation at a pressure higher than the primary squeeze, whereby the casting frame 31 and the filling frame are formed. 24, the squeeze foot 23, etc. are integrally lowered to secondarily squeeze the entire foundry sand S.
【００２２】次に抜上げシリンダ７、７を伸長作動させ
て鋳枠３１を抜型フレ−ム８を介して盛枠２４に押し付
けながら枠セットシリンダ２、２が逆作動して抜型をす
る。この際盛枠シリンダ２４、２４は鋳枠３１及びスク
イズフット２３等と一体となって上昇される。Next, while pulling out cylinders 7 and 7 are extended and the casting frame 31 is pressed against the filling frame 24 through the punching frame 8, the frame setting cylinders 2 and 2 are reversely operated to perform the punching. At this time, the filling frame cylinders 24, 24 are raised together with the casting frame 31, the squeeze foot 23, and the like.
【００２３】その後、鋳型を造型した鋳枠３１は抜上げ
シリンダ７、７により抜型フレ−ム８を介して抜き上げ
支持される一方、盛枠２４及びスクイズフット２３等は
一体となって上昇されてゆく、途中において鋳型を造型
した鋳枠３１は搬入出コンベヤ３２により掬い上げられ
てパタ−ンプレ−ト５から完全に分離されると共に鋳物
砂Ｓが砂充填手段９内に補給される。After that, the casting frame 31 in which the mold is formed is pulled up and supported by the pulling-up cylinders 7, 7 through the punching frame 8, while the filling frame 24, the squeeze foot 23 and the like are integrally raised. In the middle of the process, the casting frame 31 in which the mold is formed is scooped up by the carry-in / carry-out conveyor 32 to be completely separated from the pattern plate 5 and the molding sand S is supplied into the sand filling means 9.
【００２４】次に鋳型を造型した鋳枠３１が搬入出コン
ベヤ３２を介して搬出され、空の鋳枠３１が搬入される
と共にパタ−ン交換装置４が図示されないアクチュエ−
タにより作動してパタ−ンプレ−ト５とパタ−ンプレ−
ト５Ａとを入替え、さらにスクイズフット２３が作動さ
れてパタ−ンプレ−ト５Ａの凹凸に相対した凹凸に形成
され上記の作動を繰り返し行う。Next, the casting frame 31 in which the mold is formed is carried out through the loading / unloading conveyor 32, the empty casting frame 31 is loaded, and the pattern exchanging device 4 is not shown in the actuator.
To operate the pattern plate 5 and the pattern plate.
5A is replaced, and the squeeze foot 23 is further actuated to form irregularities corresponding to the irregularities of the pattern plate 5A, and the above operation is repeated.
【００２５】なお本発明の実施の形態では、複数の多数
孔板１１及び１２から低圧の圧縮エヤ−を噴出させてエ
ヤレ−ションをさせるようにしたが、複数の多数孔板１
１又は１２から低圧の圧縮エヤ−を噴出させてエヤレ−
ションをさせるようにしてもよい。In the embodiment of the present invention, although the low pressure compression air is jetted from the plurality of multi-hole plates 11 and 12 to cause the abrasion, the plurality of multi-hole plates 1
Low pressure compression air is jetted from 1 or 12
You may want to let them do an action.
【００２６】また本発明の実施の形態で示す圧縮エヤ−
噴出手段１９は、各々の中空室２０に各々の切り替え弁
２１を連通させて圧縮エヤ−の噴出を部分的に調整する
ようにしているが、各々の中空室２０に対して１個の切
り替え弁を連通させるようにしてもよい。The compression air shown in the embodiment of the present invention
The jetting means 19 communicates the respective switching valves 21 with the respective hollow chambers 20 so as to partially adjust the jetting of the compression air. However, one switching valve is provided for each hollow chamber 20. May be communicated with each other.
【００２７】[0027]
【発明の効果】上記の説明から明らかなように本発明
は、パタ−ンプレ−トと；このパタ−ンプレ−トの外周
を包囲して上下摺動する枠状の抜型フレ−ムと；この抜
型フレ−ム上に載置可能な鋳枠と；この鋳枠上に載置可
能な盛枠と；上部が砂貯蔵室に、中部から下方に向かっ
て複数の多数孔板を具備した二股の下細り状中空室に、
さらに下部が該下細り状中空室の下端に連通したノズル
にそれぞれ構成された砂充填手段と；前記砂充填手段の
下部に装着された昇降可能な複数個のスクイズフット
と；によって画成された鋳型造型空間に、前記砂充填手
段により鋳物砂を充填する方法であって、鋳物砂を前記
鋳型造型空間に加圧エヤ−により充填する際に、前記複
数の多数孔板から前記二股の下細り状中空室内にそれぞ
れ適宜圧縮エヤ−を噴出させて前記二股の下細り状中空
室内の鋳物砂を浮遊流動化させるエヤレ−ションを成す
と共に前記盛枠内からの排気量を制御することにより前
記パタ−ンプレ−トからの排気量を制御し、これにより
前記鋳型造型空間における鋳物砂の充填密度を部分的に
調整するようにしたから、ノズルの砂詰りをなくして鋳
物砂を鋳型造型空間に充填させることができると共に鋳
物砂を低圧エヤ−で充填させることが可能になったた
め、エヤ−の消費量を少なくすることができる。また鋳
物砂充填時の騒音を減少させることができる。さらに鋳
型造型空間におけるパタ−ンプレ−トの複雑形状部の鋳
物砂の充填密度を部分的に調整することができる等種々
の効果がある。As is apparent from the above description, the present invention provides a pattern plate; a frame-shaped die-cutting frame which surrounds the outer periphery of the pattern plate and slides vertically; A casting frame that can be placed on a die-cut frame; a fill frame that can be placed on this casting frame; a sand storage chamber at the top, and a bifurcated multi-hole plate from the middle to the bottom. In the lower tapered hollow chamber,
Further, the lower part is defined by sand filling means each formed in a nozzle communicating with the lower end of the lower tapered hollow chamber; and a plurality of vertically movable squeeze feet mounted on the lower part of the sand filling means. A method for filling a molding sand into the molding space by the sand filling means, wherein when the molding sand is filled into the molding space by a pressure air, the forked bottom taper is made from the plurality of multi-hole plates. Of the pattern by controlling the amount of exhaust gas from the filling frame while forming an air jet in which the compression sand is appropriately jetted to make the molding sand in the forked hollow hollow chamber fluidize. -The exhaust amount from the template is controlled, and thereby the packing density of the molding sand in the mold molding space is partially adjusted, so that the sand clogging of the nozzle is eliminated and the molding sand is molded into the molding space. Since it has become possible to fill in, Eya - - casting sand it is possible to fill the low-pressure Eya can be reduced consumption. Further, noise when filling the molding sand can be reduced. Further, there are various effects such that the packing density of the molding sand in the complicated shape portion of the pattern plate in the molding space can be partially adjusted.
【図１】本発明の一実施例を示す縦断面図である。FIG. 1 is a vertical sectional view showing an embodiment of the present invention.
【図２】図１におけるＡ−Ａ矢視図であり、圧縮エヤ−
噴出手段の詳細図である。（イ）はＡ−Ａ矢視正面図、
（ロ）はＡ−Ａ矢視右側面図である。FIG. 2 is a view on arrow AA in FIG. 1, showing a compression air line.
It is a detailed view of a jetting means. (A) is a front view taken along the line AA,
(B) is a right side view taken along the line AA.
【図３】図１におけるＢ−Ｂ矢視拡大図である。FIG. 3 is an enlarged view taken along arrow BB in FIG.
５ ５Ａ パタ−ンプレ−ト ８ ８Ａ 抜型フレ−ム ９ 砂充填手段 １０ 砂貯蔵室 １１ １２ 多数孔板 １３ 下細り状中空室 １４ ノズル １９ 圧縮エヤ−噴出手段 ２３ スクイズフット ２４ 盛枠 ２６ 排気制御手段 ３１ 鋳枠 ３３ 外側板 ３４ 内側板 55A pattern plate 8 8A pull-out frame 9 Sand filling means 10 sand storage room 11 12 Multi-hole plate 13 Lower tapered hollow chamber 14 nozzles 19 Compression air ejection means 23 Squeeze Foot 24 high frame 26 Exhaust control means 31 Casting frame 33 outer plate 34 Inner plate
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−158949（ＪＰ，Ａ) 特開 昭51−114326（ＪＰ，Ａ) 特開 昭58−179538（ＪＰ，Ａ) 実公 平５−19161（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B22C 11/00 - 25/00 B22C 5/12 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-60-158949 (JP, A) JP-A-51-114326 (JP, A) JP-A-58-179538 (JP, A) Jitsuhei 5- 19161 (JP, Y2) (58) Fields investigated (Int.Cl. 7 , DB name) B22C 11/00-25/00 B22C 5/12
Claims (7)
−トの外周を包囲して上下摺動する枠状の抜型フレ−ム
と；この抜型フレ−ム上に載置可能な鋳枠と；この鋳枠
上に載置可能な盛枠と；上部が砂貯蔵室に、中部から下
方に向かって複数の多数孔板を具備した二股の下細り状
中空室に、さらに下部が該下細り状中空室の下端に連通
したノズルにそれぞれ構成された砂充填手段と；前記砂
充填手段の下部に装着された昇降可能な複数個のスクイ
ズフットと；によって画成された鋳型造型空間に、前記
砂充填手段により鋳物砂を充填する方法であって、鋳物
砂を前記鋳型造型空間に加圧エヤ−により充填する際
に、前記複数の多数孔板から前記二股の下細り状中空室
内にそれぞれ適宜圧縮エヤ−を噴出させて前記二股の下
細り状中空室内の鋳物砂を浮遊流動化させるエヤレ−シ
ョンを成すと共に前記盛枠内からの排気量を制御するこ
とにより前記パタ−ンプレ−トからの排気量を制御し、
これにより前記鋳型造型空間における鋳物砂の充填密度
を部分的に調整することを特徴とする鋳物砂の充填方
法。1. A pattern plate; a frame-shaped die-cutting frame which surrounds the outer periphery of the pattern plate and slides up and down; and a casting frame which can be placed on the die-cut frame. And; a filling frame that can be placed on this casting frame; an upper part is a sand storage chamber, a bifurcated tapered hollow chamber provided with a plurality of perforated plates from the middle part to the lower part, and a lower part is the lower part. A sand filling means each formed in a nozzle communicating with the lower end of the thin hollow chamber; a plurality of vertically movable squeeze feet attached to the lower portion of the sand filling means; A method of filling foundry sand by the sand filling means, wherein when the foundry sand is filled into the mold molding space by a pressure air, the plurality of multi-hole plates are respectively inserted into the forked narrow hollow chambers. Casting in the above-mentioned bifurcated lower hollow chamber by appropriately ejecting a compression air Controlling the exhaust volume from the pattern plate by controlling the exhaust volume from the inside of the embankment frame while forming an air flow for floating the sand,
Thereby, the filling density of the molding sand in the mold molding space is partially adjusted, and the molding sand filling method is characterized.
加圧エヤ−の圧力が０．０５〜０．１８ＭＰａであるこ
とを特徴とする請求項１記載の鋳物砂の充填方法。2. The method for filling molding sand according to claim 1, wherein a pressure of a pressure air for filling the molding sand in the molding space is 0.05 to 0.18 MPa.
の多数孔板から前記二股の下細り状中空室内にそれぞれ
適宜噴出させる圧縮エヤ−の圧力が０．０５〜０．１８
ＭＰａであることを特徴とする請求項１又は２のいずれ
かに記載の鋳物砂の充填方法。3. The pressure of the compression air, which is appropriately jetted from the plurality of multi-hole plates into the downward tapered hollow chamber of the bifurcation, is 0.05 to 0.18 at the time of performing the air leak.
It is MPa, The filling method of the molding sand in any one of Claim 1 or 2 characterized by the above-mentioned.
−トの外周を包囲して上下摺動する枠状の抜型フレ−ム
と；この抜型フレ−ム上に載置可能な鋳枠と；この鋳枠
上に載置可能な盛枠と；上部が砂貯蔵室に、中部から下
方に向かって複数の多数孔板を具備した二股の下細り状
中空室に、さらに下部が該下細り状中空室の下端に連通
したノズルにそれぞれ構成された砂充填手段と；前記砂
充填手段の下部に装着された昇降可能な複数個のスクイ
ズフットと；によって画成された鋳型造型空間に、前記
砂充填手段により鋳物砂を充填する装置であって、前記
複数の多数孔板にそれぞれ装着されて前記二股の下細り
状中空室内に向けて圧縮エヤ−を噴出する圧縮エヤ−噴
出手段と、前記盛枠に装着されて盛枠内からの排気量を
制御する排気制御手段と、を備えたことを特徴とする鋳
物砂の充填装置。4. A pattern plate; a frame-shaped die-cutting frame which surrounds the outer periphery of the pattern plate and slides up and down; and a casting frame mountable on the die-cut frame. And; a filling frame that can be placed on this casting frame; an upper part is a sand storage chamber, a bifurcated tapered hollow chamber provided with a plurality of perforated plates from the middle part to the lower part, and a lower part is the lower part. A sand filling means each formed in a nozzle communicating with the lower end of the thin hollow chamber; a plurality of vertically movable squeeze feet attached to the lower portion of the sand filling means; A device for filling foundry sand by the sand filling device, which is mounted on each of the plurality of multi-hole plates and ejects a compression air toward the bifurcated downward tapered hollow chamber, An exhaust control hand attached to the filling frame to control the amount of exhaust from the filling frame. A filling device for foundry sand, comprising a step.
記複数の多数孔板を具備した外側板が垂直に設けられて
いると共に前記複数の多数孔板を具備した内側板が前記
砂充填手段の下部とでほぼ二等辺三角形を形成して設け
られていることを特徴とする請求項４記載の鋳物砂の充
填装置。5. An outer plate having the plurality of multi-hole plates forming the bifurcated tapered hollow chamber is vertically provided, and an inner plate having the plurality of multi-hole plates is the sand filling. The casting sand filling device according to claim 4, wherein the filling device is provided so as to form an isosceles triangle with the lower part of the means.
前記砂充填手段の下部とで形成されたほぼ二等辺三角形
の底角の角度が使用する鋳物砂の安息角以上であること
を特徴とする請求項５記載の鋳物砂の充填装置。6. The bottom angle of a substantially isosceles triangle formed by the inner plate having the plurality of multi-hole plates and the lower part of the sand filling means is equal to or more than the repose angle of the foundry sand used. The casting sand filling device according to claim 5.
外側面がノズル下方に向かうにしたがってノズル内側面
に近くなる傾斜面であることを特徴とする請求項４乃至
６のいずれかに記載の鋳物砂の充填装置。7. The nozzle according to claim 4, wherein the inner surface of the nozzle is vertical, and the outer surface of the nozzle is an inclined surface that is closer to the inner surface of the nozzle as it goes downward. Foundry sand filling device.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000189151A JP3410434B2 (en) | 2000-06-23 | 2000-06-23 | Method and apparatus for filling casting sand |
| EP01904343.9A EP1184106B1 (en) | 2000-02-17 | 2001-02-08 | Method and device for filling casting sand |
| PCT/JP2001/000879 WO2001060549A1 (en) | 2000-02-17 | 2001-02-08 | Method and device for filling casting sand |
| KR1020017013243A KR100837464B1 (en) | 2000-02-17 | 2001-02-08 | An apparatus for introducing and compacting molding sand, and a method for blowing and introducing molding sand |
| IDW00200102241A ID30333A (en) | 2000-02-17 | 2001-02-08 | EQUIPMENT AND METHODS INTRODUCTION OF MOLD SAND |
| US09/958,971 US6752196B2 (en) | 2000-02-17 | 2001-02-08 | Method and device for filling casting sand |
| BR0104490-7A BR0104490A (en) | 2000-02-17 | 2001-02-08 | Apparatus and method for introducing molding sand into a mold space defined by a standard plate |
| CNB2004100879848A CN1311933C (en) | 2000-02-17 | 2001-02-08 | Method and device for filling casting sand |
| KR1020077010514A KR100824122B1 (en) | 2000-02-17 | 2001-02-08 | An apparatus for introducing and compacting molding sand, and a method for blowing and introducing molding sand |
| CNB018002471A CN1214881C (en) | 2000-02-17 | 2001-02-08 | Method and device for filling casting sand |
| TW090103100A TW471985B (en) | 2000-02-17 | 2001-02-13 | Method and device for filling molding sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000189151A JP3410434B2 (en) | 2000-06-23 | 2000-06-23 | Method and apparatus for filling casting sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002001489A JP2002001489A (en) | 2002-01-08 |
| JP3410434B2 true JP3410434B2 (en) | 2003-05-26 |
Family
ID=18688813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000189151A Expired - Fee Related JP3410434B2 (en) | 2000-02-17 | 2000-06-23 | Method and apparatus for filling casting sand |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3410434B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110090931A (en) * | 2019-06-17 | 2019-08-06 | 保定锐泓机械制造有限公司 | A kind of two-way mould on end device |
-
2000
- 2000-06-23 JP JP2000189151A patent/JP3410434B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002001489A (en) | 2002-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2433725B1 (en) | Casting mold molding machine | |
| KR101051515B1 (en) | Sand introduction device and mold molding method and air molding apparatus using air | |
| US6752196B2 (en) | Method and device for filling casting sand | |
| KR20010092775A (en) | Molding device and molding method of sand mold | |
| TW201728386A (en) | Mold forming machine, sand-filling compression unit, and mold forming method | |
| JP3410434B2 (en) | Method and apparatus for filling casting sand | |
| JP3802358B2 (en) | Casting sand compression method and casting sand molding method | |
| JP4099744B2 (en) | Blowing and filling equipment for casting sand casting frame | |
| JP2010519040A (en) | Method and apparatus for forming mold with cast frame | |
| JP3441063B2 (en) | Molding method and apparatus for sand mold with frame | |
| JP4078640B2 (en) | Method of pouring mold with cast frame | |
| JP3835667B2 (en) | Method and apparatus for forming sand mold with frame | |
| JP3441061B2 (en) | Method of injecting casting sand into casting flask | |
| JP4352364B2 (en) | Molding equipment for sand mold with frame | |
| JP3431571B2 (en) | Molding apparatus and pattern carrier for sand mold with frame | |
| JP4096314B2 (en) | Molding method of sand mold with frame | |
| JP3441065B2 (en) | Mold molding method and molding apparatus | |
| JP3407882B2 (en) | Mold removal method | |
| JP2001259795A (en) | Method for filling molding sand and its device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20030221 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 3410434 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090320 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100320 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100320 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110320 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110320 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120320 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120320 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130320 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130320 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140320 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |