WO2010131544A1 - ダマ砕き装置及び調整砂の供給システム - Google Patents
ダマ砕き装置及び調整砂の供給システム Download PDFInfo
- Publication number
- WO2010131544A1 WO2010131544A1 PCT/JP2010/056668 JP2010056668W WO2010131544A1 WO 2010131544 A1 WO2010131544 A1 WO 2010131544A1 JP 2010056668 W JP2010056668 W JP 2010056668W WO 2010131544 A1 WO2010131544 A1 WO 2010131544A1
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- WIPO (PCT)
- Prior art keywords
- crushing
- sand
- dama
- bar
- crusher
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/14—Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material
- B22C5/16—Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material with conveyors or other equipment for feeding the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/18—Plants for preparing mould materials
Definitions
- the present invention relates to a dama crusher. More specifically, in the present invention, in the foundry, the adjusted sand adjusted by the kneader or the mixed sand machine is conveyed by a conveying device such as a belt conveyor, and when it is put into the sand receiving port at the top of the green sand molding machine, The present invention relates to an apparatus for crushing lumps contained in adjustment sand. Moreover, this invention relates to the supply system of the adjustment sand using this dama crushing apparatus.
- Japanese Patent Laid-Open No. 9-52142 discloses a dama crusher in which a large number of vertically arranged inner pins and a large number of outer pins are concentrically arranged, and the inner pins are rotated to create a gap between the outer fixed pins. Crushing sand of mold sand.
- This dama crusher is very effective in adjusting sand for molding.
- this dama crushing device requires a height of the device and a height for installation. To introduce this device, the existing belt conveyor arranged above the green sand molding machine needs to be raised by about 1 meter. There was a case. Therefore, it was necessary to remodel the building, and there was a case where the introduction of the crusher was abandoned.
- the adjustment sand can be uniformly filled into the mold space, particularly a mold space such as a narrow pocket, by the air flow, but the molding performance is improved and maintained. In order to do this, it is more preferable to supply conditioned sand without lumps to the molding machine, so the smashing apparatus is becoming more important.
- an object of the present invention is to provide an adjustment sand supply system in which the height of the facility is low and space saving is realized, and maintenance is easy.
- the dama crushing apparatus of the present invention is a crushing rod that is supported at both ends, and has a first crushing rod having a plurality of blades extending in the radial direction of the rotation shaft, and the crushing rod and the horizontal surface in parallel. And a second crushing rod having a rotating shaft that rotates in a direction opposite to that of the first crushing rod, and is adjusted sand between the first crushing rod and the second crushing rod. Is supplied from above, and the adjustment sand is crushed from the top to the bottom to crush the lumps.
- the adjustment sand supply system according to the present invention is a sand supply system using the above-described dama crusher, wherein the crushing rod is supported on a dolly frame and a motor for rotating the crushing bar is provided on the dolly.
- the present invention it is possible to reduce the equipment investment cost by reducing the equipment height and installation height, and to bring out the effects of being able to draw out the performance of an aeration type molding machine. Furthermore, according to the present invention, it is possible to realize space saving and easy maintenance of the adjustment sand supply system.
- FIG. 6 is a cross-sectional view taken along line AA in FIG. 5.
- FIG. 6A is a cross-sectional view taken along the line BB in FIG. (B) is a left side sectional view of (a).
- FIG. 6 is a CC arrow view of FIG. 5.
- FIG. 1 and 2 are schematic views showing the arrangement of the dama crusher of the present invention. The situation during normal operation is shown.
- FIG. 3 shows a maintenance state.
- FIG. 4 is a schematic plan view of the main body of the lump crusher. In addition, the support
- the lump crusher 1 is supported by a first crushing bar B1 and a space parallel to the crushing bar B1 in parallel with the first crushing bar B1, and rotates in the opposite direction to the first crushing bar B1.
- a second crushing bar B2 having a rotating shaft 3-2.
- each crushing bar B1 and B2 are supported by the cart frame 8, for example.
- the crushing rods B1 and B2 are equally spaced in the circumferential direction and the axial direction of the rotary shafts 3-1, 3-2 (3-1, 3-2 may be collectively referred to as “3”).
- a plurality of blades 2-1 and 2-2 (2-1 and 2-2 may be collectively referred to as “2” in some cases).
- the plurality of blades 2-1, 2-2 are not necessarily arranged at equal intervals in the circumferential direction and the axial direction of the rotary shafts 3-1, 3-2, and are appropriately arranged at arbitrary intervals. You may make it do.
- the chute Sh is provided with an upper opening below the end of the conveyor that conveys the adjustment sand.
- the opening has a frame-like portion and is connected to the carriage frame 8. Further, the width of the chute Sh is narrowed from the upper part toward the lower part, and the lowermost part can communicate with the sand tank at the upper part of the molding machine. That is, the appearance looks like a rectangle, a trapezoid, and a rectangle (see FIG. 8). However, the structure of the chute is not limited as long as the adjustment sand does not spill outside.
- the blade 2 can be manufactured by cutting out a plate material, round rod, hexagonal bolt, or the like, and the blade 2 extends in the radial direction of the rotary shaft 3.
- the blade 2-2 of the second crushing rod B2 enters the gap 4 between the blades 2-1 and 2-1 of the first crushing rod B1,
- the adjustment sand S is crushed from top to bottom and crushed.
- the gap in the width direction between the blade 2 and the blade 2 is 13 mm
- the shortest distance between the rotary shaft 3 and the blade 2 is 73 mm.
- the length of the blades 2 of the respective rotary shafts 3 and the distance between the rotary shafts 3 are adjusted so as to break up a 6 mm or more lumps.
- wing 2 changes the angle every 120 degree
- the adjusted sand can be efficiently crushed by grinding or shearing / cutting action.
- the first crushing bar B1 and the second crushing bar B2 are provided with motors 5 and 5 that individually rotate the rotation shafts 3-1, 3-2, respectively.
- the rotating shaft 3 and the motor 5 are connected by V belts 14 and 14.
- the rotation speed can be controlled so that the peripheral speed of the blades 2 of the first crushing bar B1 and the second crushing bar B2 is equal to or faster than the free fall speed of the adjustment sand S. .
- controlling the peripheral speed of the blades 2 of the first crushing rod B1 and the second crushing rod B2 can efficiently crush the dama and obtain the effect of loosening dama.
- the bogie 11 has an outer shape defined by the bogie frame 8. Further, the carriage 11 includes four rollers provided on the carriage frame 8, and these rollers are configured to be movable on rails provided on a part of the beam of the building.
- the structure is not limited as long as the dama crusher 1 is configured to be movable.
- the rail is not necessarily essential, and the configuration thereof is not limited as long as it is an alternative.
- a stopper is provided so that it can be fixed outside maintenance.
- FIG. 2 is a schematic side cross-sectional arrangement view of the dama crusher 1 of the present invention.
- a slip detection means 7 is provided for detecting a slip of the rotating shaft 3 of the first crushing bar B ⁇ b> 1 and the second crushing bar B ⁇ b> 2.
- the slip detection means 7 can detect a slip when the count of the proximity switch 9 is significantly reduced by counting the vertices 10 attached to the rotating shaft 3 by the proximity switch 9.
- the structure of the ate 10 is an L-shaped plate, and its proximity is counted by the proximity switch 9 provided on the carriage frame 8, but the structure is not limited. It is sufficient if the number of rotations of the rotation shaft 3 can be detected.
- the life of the crushing bar can be extended by welding the wear-resistant material or spraying the ceramic material to the blades 2 of the first crushing bar B1 and the second crushing bar B2.
- the dama crusher 1 is arranged directly under the adjusted sand charging device 12, but during maintenance, as shown in FIG. 3, under the adjusted sand charging device 12.
- the existing lump crushing device 1 is moved to the left side of the drawing together with the carriage 11 and pulled out to the outside of the adjusting sand feeding device 12.
- the upper part of the molding machine 13 has an elevating function.
- the lifting / lowering function is such that the sand throwing device of the molding machine 13 is supported by a cylinder (not shown) so as to be extendable / contracted.
- the lifting / lowering function can be exerted by the cylinder. Can be released.
- the lump crusher 1 is configured.
- the sand collected at each measurement point is sieved 10 times with a sieve having an opening of 6 mm, the sand weight on the sieve is measured, and the content of dama, which is the ratio of the sand weight on the sieve to the collected sand weight, is calculated. did.
- the performance of the aeration type molding machine could be extracted, and a uniform molding mold could be secured.
- slip detection is performed as follows. When too much adjustment sand is put into the dama crusher 1, or when a lot of dama is generated, the processing capacity of the dama crusher may be exceeded.
- slip can be detected when the count of the proximity switch 9 is greatly reduced by counting the vertices 10 attached to the rotary shaft 3 with the proximity switch 9. In this case, abnormal indication or adjustment sand injection is stopped.
- a dama crusher 1 is a crushing rod supported at both ends, and a first crushing rod B1 having a plurality of blades 2 extending in the radial direction of the rotary shaft 3;
- the crushing bar B1 and the second crushing bar B2 having a rotating shaft 3 supported in parallel on the horizontal plane and rotating in the opposite direction to the first crushing bar B1 are provided.
- the sand supply system is a sand supply system using the dama crusher 1.
- the motor supplies the crush bars B1 and B2 to the carriage frame 8 and rotates the crush bars B1 and B2 on the carriage 11. 5 is provided. Normal operation is performed in this state.
- it may be supported directly or via another member.
- the case where the crushing rods B1 and B2 are supported by the carriage frame 8 may be any case including the case where they are supported by the chute Sh.
- the lump crushing device 1 that is immediately below the adjusted sand throwing device 12 is moved to the left side of the drawing together with the carriage 11, and pulled out to the outside of the adjusted sand throwing device 12.
- the crushing rods B1 and B2 can be easily exchanged.
- a mobile crane K or the like can be used to reduce heavy muscle work (those that use large muscles such as arms and legs and consume a lot of body energy). That is, since the dama crusher 1 that was directly under the adjusted sand charging device 12 during operation can be pulled out of the adjusted sand charging device 12 during maintenance, the adjusted sand supply system of the present invention is easy to maintain. is there. It is preferable to pull out to the outside opposite to the adjusting sand feeding device 12, but other directions may be used.
- the lump crusher 1 of the present invention can reduce the equipment investment cost by reducing the height of the equipment and the height of the installation, and can draw out the performance of the molding machine such as the aeration type. There is an effect. Furthermore, the adjustment sand supply system of the present invention has an effect of saving space and facilitating maintenance.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
しかしながら、このダマ砕き装置は装置の高さと設置のための高さが必要であり、この装置の導入には、生砂造型機の上方に配置されている既設ベルトコンベヤを1メートルほど嵩上げが必要となる場合があった。そのため、建屋まで改造が必要となり、ダマ砕き装置の導入を断念するケースがあった。更に、改造は不要な場合であっても作業スペースは狭くメンテナンスに苦労をしていた。
一方、造型機としてエアレーション式などの空気を用いる場合においては、空気流により調整砂を鋳型空間、特に狭いポケット等の鋳型空間に均一に充填することができるが、その造型性能を向上・維持するためには、ダマのない調整砂を造型機に供給することがより好ましいので、ダマ砕き装置は重要性を増している。
さらに、本発明は、設備の高さが低く省スペース化を実現する、かつ、メンテナンスが容易となる調整砂の供給システムを提供することを目的とする。
さらに、本発明によれば、調整砂の供給システムの省スペース化とメンテナンスの容易化を実現することができるなどの効果を奏する。
また、本発明は以下の詳細な説明により更に完全に理解できるであろう。しかしながら、詳細な説明および特定の実施例は、本発明の望ましい実施の形態であり、説明の目的のためにのみ記載されているものである。この詳細な説明から、種々の変更、改変が、当業者にとって明らかだからである。
出願人は、記載された実施の形態のいずれをも公衆に献上する意図はなく、開示された改変、代替案のうち、特許請求の範囲内に文言上含まれないかもしれないものも、均等論下での発明の一部とする。
本明細書あるいは請求の範囲の記載において、名詞及び同様な指示語の使用は、特に指示されない限り、または文脈によって明瞭に否定されない限り、単数および複数の両方を含むものと解釈すべきである。本明細書中で提供されたいずれの例示または例示的な用語(例えば、「等」)の使用も、単に本発明を説明し易くするという意図であるに過ぎず、特に請求の範囲に記載しない限り本発明の範囲に制限を加えるものではない。
図1、図2は、本発明のダマ砕き装置の配置を示す概略図である。通常運転時の状況を示している。図3はメンテナンスの状態を示している。また、図4はダマ砕き装置の本体の平面概略図である。なお、図1において支柱F及び梁Hが示されている。
ただし、シュートは、調整砂が外にこぼれない構造であれば、その構造は問わない。
ここで、羽根2と羽根2の巾方向の隙間は各13mm、回転軸3と羽根2との最短距離は73mmである。この位置関係において、各々の回転軸3の羽根2の長さと、回転軸3同士の距離を調整して、6mm以上のダマを砕くことができるように構成されている。また、羽根2は、120度ごとに角度を変えて、順番に取り付けられている。
更に、造型機13の上部は、昇降機能を有している。この昇降機能は、造型機13の砂投入装置が図示しないシリンダによって伸縮自在に支持されており、このシリンダによって昇降機能を発揮することができ、メンテナンス時には造型機13をダマ砕き装置1から下方に離すことができる。
以上のように、ダマ砕き装置1は構成されている。
この検証で、「ダマ」とは、6mm以上の砂の塊をいう。
なお、今回の検証では、「ダマ」を、次のようにして測定した。すなわち、各測定点で採取した砂を、目開き6mmの篩で10回篩い、篩上の砂重量を測定し、篩上の砂重量の採取した砂重量に対する割合であるダマの含有率を計算した。
これにより、エアレーション式の造型機の性能を引き出すことができ、均一な造型鋳型を確保することができた。
すなわち、運転時には調整砂投入装置12の真下にあったダマ砕き装置1を、メンテナンス時には調整砂投入装置12の外側に引き出すことができるため、本発明の調整砂の供給システムは、メンテナンスが容易である。調整砂投入装置12の反対の外側に引き出す事が好ましいが、他の方向でも良い。
以上のように、本発明のダマ砕き装置1は、設備高さ及び設置の高さを低くして設備投資コスト削減ができ、かつ、エアレーション式などの造型機の性能を引き出すことができるなどの効果を奏する。
さらに、本発明の調整砂の供給システムは、省スペース化とメンテナンスの容易化を実現することができるなどの効果を奏する。
Claims (11)
- 両端部が支持される砕き棒であって回転軸の半径方向に向けて延設された複数の羽根を有する第1砕き棒と、
該砕き棒と水平面上で平行に間隔をおいて支持されると共に第1砕き棒とは反対方向に回転する回転軸を有する第2砕き棒と、
を具備し、
前記第1砕き棒と第2砕き棒との間に調整砂を上方から供給すると該調整砂を上から下に向かって梳ってダマを砕く、
ダマ砕き装置。 - 前記第1砕き棒の羽根の間の間隙に、前記第2砕き棒の羽根が入り込み、調整砂を上から下に向かって梳ってダマを砕く
請求項1に記載のダマ砕き装置。 - 前記第1砕き棒と第2砕き棒とが、それらの回転軸をそれぞれ単独に回転させるモーターを備えたことを特徴とする
請求項1または請求項2に記載のダマ砕き装置。 - 前記第1砕き棒と第2砕き棒とをそれらの回転軸の回転数を別の回転数で制御するためにそれぞれ別個のインバータを設けたことを特徴とする
請求項3に記載のダマ砕き装置。 - 前記第1砕き棒と第2砕き棒の羽根の周速が、調整砂の自由落下速度と同等、又は、より速くなるように各々回転数を制御することを特徴とする
請求項4に記載のダマ砕き装置。 - 前記第1砕き棒と第2砕き棒の回転軸のスリップを検出するためのスリップ検出手段を設けたことを特徴とする
請求項1、請求項2、請求項4、または請求項5に記載のダマ砕き装置。 - 前記第1砕き棒と第2砕き棒の羽根に耐摩耗材の溶接、又は、セラミックス材料の溶射を施したことを特徴とする
請求項1、請求項2、請求項4、または請求項5に記載のダマ砕き装置。 - 請求項1または請求項2に記載のダマ砕き装置を用いた調整砂の供給システムであって、前記砕き棒を台車フレームに支持すると共に該台車上に前記砕き棒を回転させるモーターを設けたことを特徴とする
調整砂の供給システム。 - 請求項8に記載の調整砂の供給システムであって、造型機は昇降機能を有していることを特徴とする
調整砂の供給システム。 - 請求項9に記載の調整砂の供給システムであって、混練機はマラーを有することを特徴とする調整砂の供給システム。
- 請求項9に記載の調整砂の供給システムであって、混砂機はアジテーターを有することを特徴とする
調整砂の供給システム。
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CN201080018555.9A CN102413960B (zh) | 2009-05-15 | 2010-04-14 | 结块打碎装置及调质砂的供给系统 |
EP10774802.2A EP2431110B1 (en) | 2009-05-15 | 2010-04-14 | Lump crushing device and conditioned sand supplying system |
JP2011513292A JP5553069B2 (ja) | 2009-05-15 | 2010-04-14 | 調整砂の供給システム |
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Cited By (2)
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CN109093066A (zh) * | 2018-08-20 | 2018-12-28 | 黟县新达机械铸造有限公司 | 一种便于调节出料流量的小型铸造用混砂机 |
CN117300057A (zh) * | 2023-11-28 | 2023-12-29 | 康硕(山西)智能制造有限公司 | 一种用于精密铸造时填充砂箱的设备 |
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CN109093066A (zh) * | 2018-08-20 | 2018-12-28 | 黟县新达机械铸造有限公司 | 一种便于调节出料流量的小型铸造用混砂机 |
CN109093066B (zh) * | 2018-08-20 | 2023-09-22 | 黟县新达机械铸造有限公司 | 一种便于调节出料流量的小型铸造用混砂机 |
CN117300057A (zh) * | 2023-11-28 | 2023-12-29 | 康硕(山西)智能制造有限公司 | 一种用于精密铸造时填充砂箱的设备 |
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EP2431110A1 (en) | 2012-03-21 |
CN102413960A (zh) | 2012-04-11 |
JP5553069B2 (ja) | 2014-07-16 |
EP2431110A4 (en) | 2018-02-21 |
CN102413960B (zh) | 2015-02-04 |
JPWO2010131544A1 (ja) | 2012-11-01 |
EP2431110B1 (en) | 2019-11-13 |
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