JP7286163B2 - Feeder and plug feeder - Google Patents

Feeder and plug feeder Download PDF

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JP7286163B2
JP7286163B2 JP2020000804A JP2020000804A JP7286163B2 JP 7286163 B2 JP7286163 B2 JP 7286163B2 JP 2020000804 A JP2020000804 A JP 2020000804A JP 2020000804 A JP2020000804 A JP 2020000804A JP 7286163 B2 JP7286163 B2 JP 7286163B2
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transport
rotating body
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wall portion
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宗之 井上
輝雄 井上
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クマクラ工業株式会社
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Description

本発明は、供給装置及びプラグフィーダーに関する。 The present invention relates to feeders and plug feeders.

例えば、特許文献１に開示されるように、金属製品を加工する際に生じる加工屑等の被輸送物を貯蔵タンク等の所定箇所まで輸送するための輸送装置として、輸送通路内に圧送される空気等の輸送気体に被輸送物を混合して輸送する輸送装置が知られている。こうした輸送装置は、輸送途中において被輸送物を輸送通路の外部に飛散させることなく輸送することができる。 For example, as disclosed in Patent Document 1, as a transportation device for transporting objects to be transported, such as scraps generated when processing metal products, to a predetermined location such as a storage tank, it is pumped into a transportation passage. 2. Description of the Related Art A transport device is known that transports a transport gas such as air mixed with a transport object. Such a transport device can transport an object to be transported without scattering it outside the transport passage during transport.

特開２０００－８５９６８号公報JP-A-2000-85968

ところで、上記輸送装置を用いて被輸送物を効率的に輸送するためには、被輸送物と輸送気体との混合比率を適切に調整する必要がある。例えば、輸送気体に対する被輸送物の比率が大きすぎると、輸送通路におけるコーナー等の輸送抵抗の大きい部分を通過できず、その部分にて被輸送物の詰まりが生じやすくなる。また、被輸送物と輸送気体との混合比率が適切であったとしても、被輸送物同士が絡まる等して被輸送物が塊の状態で輸送通路に供給されると、被輸送物の輸送抵抗が大きくなることにより、上記と同様に被輸送物の詰まりが生じやすくなる。 By the way, in order to efficiently transport the object to be transported using the transport apparatus, it is necessary to appropriately adjust the mixing ratio of the object to be transported and the transport gas. For example, if the ratio of the material to be transported to the transport gas is too high, it will not be possible to pass through corners or other portions of the transportation passage where transportation resistance is high, and clogging of the material to be transported is likely to occur at that portion. In addition, even if the mixing ratio of the transported object and the transport gas is appropriate, if the transported object is entangled with each other and supplied to the transport passage in the form of a lump, the transportation of the transported object may be affected. As the resistance increases, clogging of the transported object is more likely to occur in the same manner as described above.

この発明は、こうした実情に鑑みてなされたものであり、その目的は、被輸送物を効率的に輸送することのできる供給装置及びプラグフィーダーを提供することにある。 SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide a feeding device and a plug feeder capable of efficiently transporting objects to be transported.

上記課題を解決する供給装置は、輸送通路に供給された被輸送物を輸送気体に混合して圧送するプラグフィーダーに用いられ、前記輸送通路に被輸送物を供給する供給装置であって、被輸送物を収容する収容部と、前記収容部の下側に位置して前記輸送通路に接続される輸送部と、前記収容部に収容された被輸送物を前記輸送部へ移送する回転体と、前記回転体を回転駆動する駆動部とを備え、前記輸送部は、下方に向かって徐々に先細に絞られた集束部を備え、前記回転体は、前記収容部と前記輸送部との間を区画する第１壁部と、前記第１壁部を回転させる軸部とを備え、前記輸送部の前記集束部の内面と前記第１壁部の先端の回転軌跡との間には、回転方向前方側に向かって徐々に幅が大きくなる空間が設けられている。 A feeding device for solving the above problems is a feeding device for use in a plug feeder that mixes an object to be transported with a transport gas and feeds the object to be transported into the transporting passage under pressure, and supplies the object to be transported to the transporting passage. A storage section for storing a transported object, a transport section positioned below the storage section and connected to the transport path, and a rotating body for transferring the transported material stored in the storage section to the transport section. and a drive section for rotationally driving the rotating body, the conveying section includes a converging section that is gradually tapered downward, and the rotating body is disposed between the storage section and the conveying section. and a shaft portion for rotating the first wall portion, and between the inner surface of the converging portion of the transport portion and the rotation trajectory of the tip of the first wall portion, there is a rotation A space whose width gradually increases toward the direction forward side is provided.

上記供給装置において、前記回転体は、前記第１壁部の主面に設けられ、前記軸部の軸線方向に間隔をあけて配置されるとともに、前記軸部の軸線を挟んで互い違いに配置される四半円形状の複数の第２壁部とを備えることが好ましい。 In the supply device described above, the rotating bodies are provided on the main surface of the first wall portion, are arranged at intervals in the axial direction of the shaft portion, and are arranged alternately across the axis line of the shaft portion. It is preferable to have a plurality of quarter-circular second wall portions.

上記課題を解決するプラグフィーダーは、輸送通路に供給された被輸送物を輸送気体に混合させて圧送するプラグフィーダーであって、上記供給装置と、前記輸送通路に気体流を発生させる気体流発生装置とを備える。 A plug feeder for solving the above-mentioned problems is a plug feeder that mixes an object to be transported in a transport passage with a transport gas and feeds the object under pressure, and comprises: the above-mentioned supply device; and a device.

上記プラグフィーダーにおいて、前記気体流発生装置は、前記輸送通路、及び前記供給装置の前記輸送部を負圧にする吸引ブロワーであることが好ましい。 In the plug feeder described above, it is preferable that the gas flow generating device is a suction blower that creates a negative pressure in the transporting passage and the transporting section of the feeding device.

本発明の供給装置及びプラグフィーダーによれば、被輸送物を効率的に輸送することができる。 According to the feeding device and the plug feeder of the present invention, objects to be transported can be efficiently transported.

プラグフィーダーの概略図。Schematic of a plug feeder. 供給装置の断面図。Sectional drawing of a supply apparatus. 図２の３－３線断面図。3-3 line cross-sectional view of FIG. 回転体の斜視図。The perspective view of a rotating body.

以下、本発明の一実施形態を説明する。
図１に示すように、本実施形態のプラグフィーダー１０は、ＮＣ旋盤１１を用いた金属製品の加工により生じた金属屑を被輸送物として輸送する。この種の金属屑は硬質であるとともに、形状が複雑で均一ではなく、たとえば螺旋状に渦巻いているものや、長さが数ミリから数十ミリのものが混在している。このような金属屑の種類としては鉄、鋳鉄、鋳鋼、アルミニウム等が挙げられる。 An embodiment of the present invention will be described below.
As shown in FIG. 1, the plug feeder 10 of this embodiment transports metal scraps produced by processing metal products using an NC lathe 11 as objects to be transported. This type of metal scrap is hard, has a complicated shape, and is not uniform. Types of such scrap metal include iron, cast iron, cast steel, and aluminum.

プラグフィーダー１０には、２つの輸送通路１２，１３が並設されている。輸送通路１２，１３の最上流にはそれぞれ供給装置１４が配置されている。供給装置１４は、ＮＣ旋盤１１の排出口１１ａから排出された被輸送物を輸送通路１２，１３側へ供給する。供給装置１４は全て同一の構成である。 The plug feeder 10 has two transport passages 12, 13 arranged side by side. A supply device 14 is arranged at the most upstream of each of the transport paths 12 and 13 . The supply device 14 supplies the object to be transported discharged from the discharge port 11 a of the NC lathe 11 to the transport passages 12 and 13 . All supply devices 14 have the same configuration.

輸送通路１２，１３の最下流側には、共通の吸引ブロワー１５が配置されている。吸引ブロワー１５は、輸送通路１２，１３に気体流を発生させる気体流発生装置である。本実施形態のプラグフィーダー１０では、各供給装置１４によりそれぞれ輸送通路１２，１３に供給された被輸送物は、吸引ブロワー１５により吸引されることで、負圧状態の輸送通路１２、１３の下流側へ輸送される。 A common suction blower 15 is arranged downstream of the transport channels 12 , 13 . The suction blower 15 is a gas flow generator that generates gas flows in the transport passages 12 and 13 . In the plug feeder 10 of the present embodiment, the objects to be transported that are supplied to the transport passages 12 and 13 by the supply devices 14 are sucked by the suction blower 15 so that the objects downstream of the transport passages 12 and 13 are in a negative pressure state. transported to the side.

輸送通路１２，１３において、供給装置１４の近傍には切換バルブ１６がそれぞれ設けられている。切換バルブ１６を操作することにより、いずれの輸送通路１２，１３に気体流を発生させるかを選択できる。吸引ブロワー１５の下流側には、輸送通路１２，１３内を輸送されてきた金属屑が貯蔵される貯蔵タンク１７が配置されている。 A switching valve 16 is provided in the vicinity of the supply device 14 in each of the transport passages 12 and 13 . By operating the switching valve 16, it is possible to select which of the transport passages 12, 13 to generate the gas flow. A storage tank 17 is arranged downstream of the suction blower 15 to store the scrap metal transported through the transport passages 12 and 13 .

また、プラグフィーダー１０は、供給装置１４の動作を制御する制御部１８を備えている。
図２及び図３に示すように、供給装置１４は、上側に開口を有する有底箱状のケーシング２０と、ケーシング２０内に配置されるとともにケーシング２０に対して回転可能に支持される回転体３０と、ＮＣ旋盤１１から排出された被輸送物をケーシング２０に案内するホッパー４０とを備えている。 The plug feeder 10 also includes a control section 18 that controls the operation of the feeding device 14 .
As shown in FIGS. 2 and 3, the supply device 14 includes a bottomed box-like casing 20 having an opening on the upper side, and a rotating body arranged in the casing 20 and rotatably supported with respect to the casing 20. 30 and a hopper 40 for guiding the object discharged from the NC lathe 11 to the casing 20 .

ケーシング２０は、水平方向に延びる略Ｕ字板状の周壁２１と、周壁２１の両端部を塞ぐ第１端壁２２及び第２端壁２３とを備え、その底部分には、下方に向かって周壁２１が徐々に先細に絞られた形状の集束部２４が設けられている。第２端壁２３には、集束部２４の底部に開口するとともに、輸送通路１２，１３に連通される排出口２５が設けられている。 The casing 20 includes a substantially U-shaped peripheral wall 21 extending in the horizontal direction, and a first end wall 22 and a second end wall 23 closing both ends of the peripheral wall 21. A converging portion 24 is provided in which the peripheral wall 21 is gradually tapered. The second end wall 23 is provided with a discharge port 25 that opens to the bottom of the collecting portion 24 and communicates with the transport passages 12 and 13 .

図３に示すように、ケーシング２０の第１端壁２２及び第２端壁２３には、回転体３０の軸部３１が回転可能に支持されている。回転体３０の軸部３１は、第１端壁２２の外面に取り付けられた駆動部Ｍに連結されている。駆動部Ｍは、回転体３０を回転駆動するモーターである。 As shown in FIG. 3 , the first end wall 22 and the second end wall 23 of the casing 20 rotatably support the shaft portion 31 of the rotating body 30 . A shaft portion 31 of the rotating body 30 is connected to a driving portion M attached to the outer surface of the first end wall 22 . The drive unit M is a motor that drives the rotating body 30 to rotate.

図２に示すように、回転体３０の軸部３１には、ケーシング２０の内部を上側に位置する収容部２０ａと下側に位置する輸送部２０ｂとに区画する第１壁部３２が一体に形成されている。収容部２０ａは、ホッパー４０から供給された被輸送物を収容する部位であり、輸送部２０ｂは、収容部２０ａの下側に位置し、排出口２５を介して輸送通路１２，１３に接続される部位である。 As shown in FIG. 2, a shaft portion 31 of the rotating body 30 is integrally provided with a first wall portion 32 that divides the inside of the casing 20 into a housing portion 20a located on the upper side and a transport portion 20b located on the lower side. formed. The containing portion 20a is a portion that contains the objects to be transported supplied from the hopper 40, and the transporting portion 20b is positioned below the containing portion 20a and is connected to the transport passages 12 and 13 via the discharge port 25. It is a part that

図２及び図４に示すように、回転体３０の第１壁部３２は、軸部３１の軸線Ｐ方向に延びる四角板状の壁部であり、軸部３１に対して、二つの第１壁部３２が軸線Ｐを中心とする回転対称となる位置に設けられている。二つの第１壁部３２の形状は同じである。 As shown in FIGS. 2 and 4 , the first wall portion 32 of the rotating body 30 is a square plate-shaped wall portion extending in the direction of the axis P of the shaft portion 31 . The wall portion 32 is provided at a rotationally symmetrical position about the axis P. As shown in FIG. The two first wall portions 32 have the same shape.

第１壁部３２の第１主面３２ａ及び第２主面３２ｂには、複数の第２壁部３３が一体に形成されている。第２壁部３３は、軸方向視において、軸部３１の軸線Ｐを中心とし、第１壁部３２の側縁３２ｃから軸線Ｐまでの長さを半径とする四半円形状をなす壁部であり、周方向における一方側の縁部にて第１壁部３２に接続されている。第２壁部３３の中心角θは、例えば、８５°～９５°である。本発明では、中心角θが９０°よりも僅かに大きい角度又は僅かに小さい角度の扇型形状も含めて四半円形状と記載している。また、第２壁部３３の両側面は、径方向外側に向かって徐々に厚さが薄くなるテーパ形状に形成されている。 A plurality of second wall portions 33 are integrally formed on the first main surface 32 a and the second main surface 32 b of the first wall portion 32 . The second wall portion 33 is a wall portion having a quarter circle shape centered on the axis P of the shaft portion 31 and having a radius from the side edge 32c of the first wall portion 32 to the axis P when viewed in the axial direction. It is connected to the first wall portion 32 at one edge portion in the circumferential direction. A central angle θ of the second wall portion 33 is, for example, 85° to 95°. In the present invention, the term "quarter-circular shape" includes fan-shaped shapes having a central angle θ slightly larger or slightly smaller than 90°. Both side surfaces of the second wall portion 33 are formed in a tapered shape in which the thickness gradually decreases toward the radially outer side.

図４に示すように、第２壁部３３は、第１壁部３２の第１主面３２ａ側及び第２主面３２ｂ側のそれぞれに対して、軸方向に一定の間隔をあけて複数、配置されるとともに、軸部３１の軸線Ｐを挟んで互い違いに位置するように配置されている。軸方向に隣接する第２壁部３３の間隔Ｄ１（中心線の間の間隔）は、例えば、２０～６０ｍｍである。 As shown in FIG. 4 , the second wall portion 33 is provided on the first main surface 32a side and the second main surface 32b side of the first wall portion 32 at regular intervals in the axial direction. While being arranged, they are arranged so as to be alternately positioned with the axis P of the shaft portion 31 interposed therebetween. A distance D1 (a distance between center lines) between the axially adjacent second wall portions 33 is, for example, 20 to 60 mm.

また、第１壁部３２の第１主面３２ａ側に設けられる第２壁部３３の軸方向位置と、第２主面３２ｂ側に設けられる第２壁部３３の軸方向位置は一致している。つまり、第２主面３２ｂ側に設けられる第２壁部３３は、第１壁部３２の第１主面３２ａ側に設けられる第２壁部３３の裏側に位置している。 Further, the axial position of the second wall portion 33 provided on the first main surface 32a side of the first wall portion 32 and the axial position of the second wall portion 33 provided on the second main surface 32b side are aligned. there is That is, the second wall portion 33 provided on the second main surface 32b side is located on the back side of the second wall portion 33 provided on the first main surface 32a side of the first wall portion 32 .

回転体３０の材質は特に限定されるものではないが、耐磨耗性の観点から、ＦＣＤ４５０等の球状黒鉛鋳鉄であることが好ましい。
回転体３０の回転に伴って、回転体３０の第１壁部３２は、ケーシング２０の収容部２０ａと輸送部２０ｂとの間を閉じる閉位置と、収容部２０ａと輸送部２０ｂとの間を開く開位置とに位置することができる。 Although the material of the rotating body 30 is not particularly limited, it is preferably made of spheroidal graphite cast iron such as FCD450 from the viewpoint of abrasion resistance.
As the rotating body 30 rotates, the first wall portion 32 of the rotating body 30 moves between the closed position in which the housing portion 20a and the transport portion 20b of the casing 20 are closed and the space between the housing portion 20a and the transport portion 20b. It can be located in an open position and an open position.

図２に示すように、閉位置は、各第１壁部３２の側縁３２ｃがケーシング２０の周壁２１に最も近接する位置であり、本実施形態では、各第１壁部３２が水平となる位置が閉位置となるように設計されている。回転体３０が閉位置にあるとき、第１壁部３２が収容部２０ａと輸送部２０ｂとの間を区画する壁となることにより、収容部２０ａと輸送部２０ｂとの間が閉じた状態となり、収容部２０ａから輸送部２０ｂへの被輸送物の供給が制限される。 As shown in FIG. 2, the closed position is a position where the side edge 32c of each first wall portion 32 is closest to the peripheral wall 21 of the casing 20, and in this embodiment, each first wall portion 32 is horizontal. The position is designed to be the closed position. When the rotating body 30 is in the closed position, the first wall portion 32 serves as a partition wall between the storage portion 20a and the transportation portion 20b, so that the storage portion 20a and the transportation portion 20b are closed. , the supply of the object to be transported from the storage section 20a to the transport section 20b is restricted.

なお、収容部２０ａと輸送部２０ｂとの間が閉じた状態は、ケーシング２０の周壁２１と回転体３０との間の隙間が最小となる状態ということもできる。また、回転体３０が閉位置にあるとき、第１壁部３２の側縁３２ｃとケーシング２０との間には、被輸送物の噛み込みを抑制するための数ミリ程度の僅かな隙間Ｄ２が設けられている。 It can also be said that the state in which the storage portion 20a and the transport portion 20b are closed is the state in which the gap between the peripheral wall 21 of the casing 20 and the rotor 30 is minimized. Further, when the rotating body 30 is in the closed position, a slight gap D2 of about several millimeters is provided between the side edge 32c of the first wall portion 32 and the casing 20 to prevent objects to be transported from being caught. is provided.

開位置は、回転体３０が閉位置以外の位置、即ち、各第１壁部３２の側縁３２ｃがケーシング２０に最も近接する位置を除く全ての位置にある状態であり、本実施形態では、各第１壁部３２が水平に対して傾斜した状態となる位置が開位置となるように設計されている。 The open position is a state in which the rotating body 30 is in a position other than the closed position, that is, in all positions except for the position where the side edge 32c of each first wall portion 32 is closest to the casing 20. In this embodiment, It is designed so that the position where each first wall portion 32 is inclined with respect to the horizontal is the open position.

図２に示すように、ケーシング２０の集束部２４の内面において、回転体３０の第１壁部３２の先端である側縁３２ｃの回転軌跡Ｔに対向する部分には、回転体３０の回転方向前方側に向かって回転軌跡Ｔとの間隔が徐々に広がる拡幅部２４ａが設けられている。これにより、回転軌跡Ｔと集束部２４の内面の拡幅部２４ａとの間には、回転体３０の回転方向前方側に向かって徐々に幅が大きくなる空間Ｓが形成される。なお、図２においては、回転軌跡Ｔは、第２壁部３３の周縁を示す線に一致する。 As shown in FIG. 2 , on the inner surface of the converging portion 24 of the casing 20 , a side edge 32 c that is the tip of the first wall portion 32 of the rotating body 30 faces the rotational trajectory T. A widened portion 24a is provided in which the distance from the rotational locus T gradually widens toward the front side. As a result, a space S whose width gradually increases toward the front side in the rotation direction of the rotor 30 is formed between the rotational locus T and the widened portion 24 a of the inner surface of the converging portion 24 . Note that in FIG. 2 , the locus of rotation T coincides with a line indicating the periphery of the second wall portion 33 .

図２に示すように、ケーシング２０には、回転体３０が閉位置にあることを検出する検出部２６が設けられている。検出部２６は、ケーシング２０の周壁２１における、回転体３０が閉位置にあるときの第１壁部３２の側縁３２ｃが対向する部分に取り付けられた近接センサであり、第１壁部３２の側縁３２ｃが所定距離以内に近づいたことを非接触で検出する。そして、検出部２６は、回転体３０の位置に応じた検出信号Ｓ１を制御部１８に送信する。 As shown in FIG. 2, the casing 20 is provided with a detector 26 that detects that the rotor 30 is in the closed position. The detection unit 26 is a proximity sensor attached to a portion of the peripheral wall 21 of the casing 20 facing the side edge 32c of the first wall 32 when the rotor 30 is in the closed position. It is detected without contact that the side edge 32c has approached within a predetermined distance. The detection unit 26 then transmits a detection signal S<b>1 corresponding to the position of the rotating body 30 to the control unit 18 .

図１に示すように、プラグフィーダー１０の制御部１８には、検出部２６からの検出信号Ｓ１が入力される。制御部１８は、検出部２６からの検出信号Ｓ１に基づいて、供給装置１４の駆動部Ｍの駆動を制御する。詳述すると、検出部２６から入力される検出信号Ｓ１が、回転体３０が開位置にあることを示す信号から回転体３０が閉位置にあることを示す信号に切り替わったことに基づいて、制御部１８は、駆動部Ｍの駆動を停止して、回転体３０を閉位置に保持する。 As shown in FIG. 1, the detection signal S1 from the detection section 26 is input to the control section 18 of the plug feeder 10 . The control unit 18 controls driving of the driving unit M of the supply device 14 based on the detection signal S1 from the detection unit 26 . Specifically, the detection signal S1 input from the detection unit 26 is switched from a signal indicating that the rotating body 30 is at the open position to a signal indicating that the rotating body 30 is at the closed position. The portion 18 stops driving the driving portion M and holds the rotating body 30 in the closed position.

そして、制御部１８は、駆動部Ｍの停止から、予め設定された所定期間が経過した後、駆動部Ｍの駆動を再開する。上記所定期間は、供給装置１４の輸送部２０ｂ内の被輸送物が輸送通路１２，１３を通じて貯蔵タンク１７まで輸送できる十分な時間であり、輸送通路１２，１３の長さや吸引ブロワー１５の能力等のプラグフィーダー１０の構成に応じて適宜、設定される。 Then, the control unit 18 resumes driving the driving unit M after a predetermined period of time has passed since the driving unit M stopped. The above-mentioned predetermined period is a time sufficient for transporting an object to be transported in the transporting section 20b of the supply device 14 to the storage tank 17 through the transporting paths 12 and 13, and the length of the transporting paths 12 and 13, the capacity of the suction blower 15, and the like. is appropriately set according to the configuration of the plug feeder 10.

次に、本実施形態の作用について記載する。
ＮＣ旋盤１１を用いた金属加工により生じた金属屑等の被輸送物は、供給装置１４に投入されて収容部２０ａに収容される。一方、供給装置１４の回転体３０は、制御部１８により制御された駆動部Ｍによって回転駆動される。回転体３０の回転に伴って、収容部２０ａ内の被輸送物の一部が輸送部２０ｂに入り込むことにより、収容部２０ａ側から輸送部２０ｂ側へ被輸送物が移送される。 Next, the operation of this embodiment will be described.
Objects to be transported such as metal scraps produced by metal processing using the NC lathe 11 are put into the supply device 14 and stored in the storage section 20a. On the other hand, the rotating body 30 of the supply device 14 is rotationally driven by the driving section M controlled by the control section 18 . As the rotating body 30 rotates, part of the object to be transported in the storage section 20a enters the transport section 20b, thereby transferring the transport target from the storage section 20a side to the transport section 20b side.

ここで、収容部２０ａ内の被輸送物は、自重により圧縮された状態で収容されているため、塊の状態で輸送部２０ｂ側に入り込みやすい。そこで、本実施形態では、回転軌跡Ｔと集束部２４の内面の拡幅部２４ａとの間に、回転体３０の回転方向前方側に向かって徐々に幅が大きくなる空間Ｓを形成している。これにより、回転体３０の回転に伴って、塊状の被輸送物が空間Ｓに対向する部分を通過する際に、塊状の被輸送物の一部が空間Ｓ側へ流れ、被輸送物の塊に先行して空間Ｓ内を通ってぱらぱらと輸送部２０ｂの底部に落下する。空間Ｓは、回転方向前方側に向かって徐々に幅が大きくなる形状であるため、一度に多くの被輸送物が空間Ｓへ流れることはなく、少しずつ空間Ｓへと流れ、詰まることなく空間Ｓ内をスムーズに移動する。 Here, since the objects to be transported in the storage section 20a are stored in a compressed state due to their own weight, they tend to enter the transportation section 20b side in a mass state. Therefore, in this embodiment, a space S whose width gradually increases toward the front side in the rotation direction of the rotating body 30 is formed between the rotational locus T and the widened portion 24a of the inner surface of the converging portion 24 . As a result, when the massive transported object passes through the portion facing the space S as the rotating body 30 rotates, part of the massive transported object flows toward the space S, and the mass of the transported object moves toward the space S. prior to , passing through the space S and falling to the bottom of the transport section 20b. Since the space S has a shape in which the width gradually increases toward the forward side in the rotation direction, a large amount of transported objects do not flow into the space S at one time, but flow into the space S little by little, and the space does not become clogged. Move smoothly in S.

塊状の被輸送物の一部が空間Ｓ側へ流れることにより、被輸送物の塊が徐々に解れて小さくなっていく。これにより、塊状の被輸送物が一度に多量に輸送部２０ｂへ移送されることに起因して、輸送通路１２，１３内の輸送気体に対する被輸送物の混合比率が過度に大きくなることを抑制できる。また、輸送部２０ｂへ移送される被輸送物の塊が小さくなることにより、被輸送物を圧送する際に生じる空気抵抗や輸送通路１２，１３の壁面に対する摩擦抵抗等が小さくなる。それらの結果、より小さい力で被輸送物を効率的に圧送できる。 As a part of the mass of the object to be transported flows toward the space S, the mass of the object to be transported gradually loosens and becomes smaller. As a result, it is possible to prevent the mixing ratio of the material to be transported from the transporting gas in the transport passages 12 and 13 from becoming excessively large due to a large amount of bulk material to be transported being transferred to the transporting section 20b at one time. can. Further, since the mass of the object to be transported to the transport section 20b becomes smaller, the air resistance generated when the object to be transported is pressure-fed and the frictional resistance against the walls of the transport passages 12 and 13 are reduced. As a result, the object to be transported can be efficiently pumped with less force.

供給装置１４の輸送部２０ｂに移送された被輸送物は、排出口２５及び輸送通路１２，１３を通じて吸引ブロワー１５により吸引されることで、負圧状態の輸送通路１２，１３内を通って下流側の貯蔵タンク１７まで圧送される。 The transported object transferred to the transporting portion 20b of the supply device 14 is sucked by the suction blower 15 through the discharge port 25 and the transporting passages 12 and 13, and passes through the transporting passages 12 and 13 in a negative pressure state to the downstream. It is pumped to the storage tank 17 on the side.

ここで、回転体３０が閉位置に位置すると、検出部２６からの検出信号Ｓ１に基づいて、駆動部Ｍの駆動が停止されて回転体３０が閉位置に保持される。駆動部Ｍの停止から所定期間が経過後、駆動部Ｍの駆動が再開されることにより供給装置１４における収容部２０ａ側から輸送部２０ｂ側への被輸送物の移送が再開される。 Here, when the rotating body 30 is positioned at the closed position, based on the detection signal S1 from the detecting section 26, driving of the driving section M is stopped and the rotating body 30 is held at the closed position. After a predetermined period of time has elapsed since the driving unit M stopped, the driving of the driving unit M is restarted, thereby restarting the transfer of the object to be transported from the storage unit 20a side to the transporting unit 20b side in the supply device 14 .

つまり、供給装置１４の輸送部２０ｂからの被輸送物の圧送を、供給装置１４の回転体３０を閉位置に保持した状態にて行っている。これにより、被輸送物の圧送時において、供給装置１４の収容部２０ａ側から輸送部２０ｂ側への空気のリークが抑制される。これにより、輸送通路１２，１３内に、被輸送物を圧送する強い力を効率的に発生させることができる。 In other words, the object to be transported is pumped from the transporting portion 20b of the supply device 14 while the rotor 30 of the supply device 14 is held at the closed position. This suppresses leakage of air from the storage section 20a side of the supply device 14 to the transport section 20b side during pumping of the object to be transported. As a result, a strong force can be efficiently generated in the transport passages 12 and 13 for pumping the objects to be transported.

次に、本実施形態の効果について記載する。
（１）供給装置１４は、被輸送物を収容する収容部２０ａと、収容部２０ａの下側に位置して輸送通路１２，１３に接続される輸送部２０ｂと、収容部２０ａに収容された被輸送物を輸送部２０ｂへ移送する回転体３０と、回転体３０を回転駆動する駆動部Ｍとを備えている。輸送部２０ｂは、下方に向かって徐々に先細に絞られた形状の集束部２４を備えている。回転体３０は、収容部２０ａと輸送部２０ｂとの間を区画する第１壁部３２と、第１壁部３２を回転させる軸部３１とを備えている。輸送部２０ｂの集束部２４の内面と第１壁部３２の先端の回転軌跡Ｔとの間には、回転方向前方側に向かって徐々に幅が大きくなる空間Ｓが設けられている。 Next, the effects of this embodiment will be described.
(1) The supply device 14 includes a storage section 20a that stores an object to be transported, a transport section 20b that is positioned below the storage section 20a and connected to the transportation passages 12 and 13, and a It is provided with a rotating body 30 for transporting an object to be transported to the transporting section 20b and a driving section M for rotationally driving the rotating body 30. As shown in FIG. The transport portion 20b has a converging portion 24 that is tapered downward. The rotating body 30 includes a first wall portion 32 that partitions the storage portion 20 a and the transport portion 20 b and a shaft portion 31 that rotates the first wall portion 32 . Between the inner surface of the converging portion 24 of the transporting portion 20b and the rotational trajectory T of the tip of the first wall portion 32, a space S whose width gradually increases toward the front in the rotational direction is provided.

上記構成によれば、より小さい力で被輸送物を効率的に圧送できる。更に、上記構成の供給装置１４を用いることにより、プラグフィーダー１０の吸引ブロワー１５として、より出力の小さいものを採用することが可能になり、プラグフィーダー１０の小型化にも寄与する。 According to the above configuration, the object to be transported can be efficiently pumped with a smaller force. Furthermore, by using the feeding device 14 having the above configuration, it becomes possible to employ a suction blower 15 with a smaller output, which contributes to miniaturization of the plug feeder 10 .

（２）回転体３０は、第１壁部３２の第１主面３２ａ及び第２主面３２ｂに設けられる四半円形状の複数の第２壁部３３を備えている。複数の第２壁部３３は、軸部３１の軸線Ｐ方向に間隔Ｄ１をあけて配置されるとともに、軸部３１の軸線Ｐを挟んで互い違いに配置されている。 (2) The rotor 30 includes a plurality of quarter-circular second walls 33 provided on the first main surface 32 a and the second main surface 32 b of the first wall 32 . The plurality of second wall portions 33 are arranged at intervals D1 in the direction of the axis P of the shaft portion 31 and arranged alternately with the axis P of the shaft portion 31 interposed therebetween.

上記構成によれば、回転体３０の回転に伴って収容部２０ａ側から輸送部２０ｂ側へ被輸送物が移送される際に、被輸送物は、一つの大きな塊の状態で移送されるのではなく、第２壁部３３間の隙間の形状に相当する略四半円形状の複数の小さな塊の状態で移送される。これにより、上記（１）の効果がより顕著に得られる。 According to the above configuration, when the object to be transported is transferred from the accommodating portion 20a side to the transporting portion 20b side as the rotating body 30 rotates, the object to be transported is transferred in the form of one large lump. Instead, it is transferred in a state of a plurality of small chunks having a substantially quarter-circular shape corresponding to the shape of the gap between the second wall portions 33 . Thereby, the above effect (1) can be obtained more remarkably.

（３）制御部１８は、検出部２６からの検出信号Ｓ１に基づいて、回転体３０が収容部２０ａと輸送部２０ｂとの間を閉じる閉位置に位置するときに、回転体３０を所定期間、停止させるように駆動部Ｍを制御する。 (3) Based on the detection signal S1 from the detection section 26, the control section 18 controls the rotation body 30 for a predetermined period of time when the rotation body 30 is positioned at the closed position that closes the space between the storage section 20a and the transportation section 20b. , controls the drive unit M to stop.

上記構成によれば、被輸送物の圧送時において、供給装置１４の収容部２０ａ側から輸送部２０ｂ側への空気のリークが抑制される。これにより、輸送通路１２，１３内に、被輸送物を圧送する強い力を効率的に発生させることができる。 According to the above configuration, air leakage from the storage section 20a side of the supply device 14 to the transport section 20b side is suppressed when the object to be transported is pumped. As a result, a strong force can be efficiently generated in the transport passages 12 and 13 for pumping the objects to be transported.

（４）プラグフィーダー１０は、供給装置１４と、輸送通路１２，１３及び供給装置１４の輸送部２０ｂを負圧にする吸引ブロワー１５とを備えている。
上記構成によれば、吸引ブロワー１５により輸送部２０ｂが負圧状態になることにより、上記の空間Ｓに達した塊状の被輸送物に空間Ｓ側へ引っ張られる力が作用する。これにより、塊状の被輸送物が解れやすくなる。 (4) The plug feeder 10 includes a feeding device 14 and a suction blower 15 that makes the transport passages 12 and 13 and the transporting portion 20b of the feeding device 14 negative pressure.
According to the above configuration, the transportation section 20b is put into a negative pressure state by the suction blower 15, so that a force of pulling toward the space S acts on the massive transported object that has reached the space S described above. This makes it easier for the lump-shaped transported object to be unraveled.

なお、本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
・回転体３０が閉位置にあるときの第１壁部３２の側縁３２ｃとケーシング２０との間の隙間Ｄ２は、ゼロであってもよい。 In addition, this embodiment can be changed and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- The gap D2 between the side edge 32c of the first wall portion 32 and the casing 20 when the rotating body 30 is in the closed position may be zero.

・空間Ｓは、全体として、回転方向前方側に向かって徐々に幅が大きくなる形状であれば、幅が変化しない部分が有していてもよい。
・回転体３０に設けられる第２壁部３３は、第１壁部３２の第１主面３２ａ及び第２主面３２ｂのいずれか一方のみに設けられていてもよい。また、第２壁部３３を省略してもよい。 As long as the space S has a shape in which the width gradually increases toward the front in the rotation direction, the space S may have a portion whose width does not change.
- The second wall portion 33 provided on the rotating body 30 may be provided on only one of the first main surface 32a and the second main surface 32b of the first wall portion 32 . Also, the second wall portion 33 may be omitted.

・上記実施形態では、制御部１８によって供給装置１４の駆動部Ｍの制御を行っていたが、供給装置１４に駆動部Ｍを制御する駆動部制御部を設けてもよい。この場合、駆動部制御部は、回転体３０が収容部２０ａと輸送部２０ｂとの間を閉じる閉位置に位置するときに、回転体３０を所定期間、停止させるように駆動部Ｍを制御する。 - In the above-described embodiment, the control unit 18 controls the drive unit M of the supply device 14 , but the supply device 14 may be provided with a drive unit control unit that controls the drive unit M. In this case, the driving section control section controls the driving section M so as to stop the rotating body 30 for a predetermined period when the rotating body 30 is positioned at the closed position that closes the space between the storage section 20a and the transport section 20b. .

・回転体３０の回転位置を検出する検出部２６は、近接センサに限定されるものではない。例えば、駆動部Ｍとしてのモーターに備えられるローターの位置に基づいて、回転体３０の回転位置を検出する検出部であってもよい。 - The detection part 26 which detects the rotation position of the rotating body 30 is not limited to a proximity sensor. For example, it may be a detection unit that detects the rotational position of the rotating body 30 based on the position of a rotor provided in a motor as the driving unit M.

・回転体３０を閉位置にて保持させることなく、連続的に回転させてもよい。
・貯蔵タンク１７は、輸送気体と被輸送物とを分離する集塵機能を有するものであってもよい。 - The rotating body 30 may be rotated continuously without being held at the closed position.
- The storage tank 17 may have a dust collection function to separate the transport gas from the transported object.

・上記実施形態では、輸送通路１２，１３に気体流を発生させる気体流発生装置として吸引ブロワー１５を採用していたが、吸引ブロワー１５に代えて送風ブロワーを用いてもよい。この場合には、供給装置１４のケーシング２０の第１端壁２２における排出口２５の反対側となる位置に送風口を設けて、この送風口に対して、直接又は間接的に送風ブロワーを接続し、送風口を通じて供給装置１４の輸送部２０ｂ及び輸送通路１２，１３に気体流を発生させる。 - In the above-described embodiment, the suction blower 15 is used as the gas flow generating device for generating the gas flow in the transport passages 12 and 13, but the suction blower 15 may be replaced with a blower. In this case, a blower is provided at a position opposite to the discharge port 25 in the first end wall 22 of the casing 20 of the supply device 14, and a blower is directly or indirectly connected to the blower. Then, a gas flow is generated in the transport portion 20b of the supply device 14 and the transport passages 12 and 13 through the blower port.

・上記実施形態では、２つの輸送通路１２、１３を設けたが、同輸送路を３つ以上設ける構成を採用してもよい。複数の輸送通路を設ける構成とした場合、様々な種類の被輸送物の輸送がその種類別に可能となり、効率的である。また、輸送通路の出口を複数設けるとともに、各出口に貯蔵タンク１７を設けて、被輸送物の種類別に輸送先となる貯蔵タンク１７を変更することも可能である。 - Although two transport paths 12 and 13 are provided in the above-described embodiment, a configuration in which three or more of the transport paths are provided may be employed. When a plurality of transport passages are provided, various types of transported objects can be transported by type, which is efficient. It is also possible to provide a plurality of outlets of the transportation passage, and to provide a storage tank 17 at each outlet, so that the storage tank 17 to be the transportation destination can be changed according to the type of the object to be transported.

・輸送路を１つとする構成を採用してもよい。この場合、切換バルブ１６は省略される。
・被輸送物は、金属屑に限定されるものではなく、例えば、ガラス、プラスチック、板材、生ごみ、ビニール等の粉砕体や、セメント、砂、木の粉等の粉体等であってもよい。 - You may employ|adopt the structure which makes a transportation route one. In this case, the switching valve 16 is omitted.
・The objects to be transported are not limited to metal scraps. good.

Ｓ…空間
Ｔ…回転軌跡
１０…プラグフィーダー
１２，１３…輸送通路
１４…供給装置
１５…吸引ブロワー
２０ａ…収容部
２０ｂ…輸送部
２４…集束部
２４ａ…拡幅部
３０…回転体
３１…軸部
S... Space T... Rotation locus 10... Plug feeder 12, 13... Transport passage 14... Supply device 15... Suction blower 20a... Accommodating part 20b... Transport part 24... Convergence part 24a... Widening part 30... Rotating body 31... Shaft part

Claims (4)

輸送通路に供給された被輸送物を輸送気体に混合して圧送するプラグフィーダーに用いられ、前記輸送通路に被輸送物を供給する供給装置であって、
被輸送物を収容する収容部と、
前記収容部の下側に位置して前記輸送通路に接続される輸送部と、
前記収容部に収容された被輸送物を前記輸送部へ移送する回転体と、
前記回転体を回転駆動する駆動部とを備え、
前記輸送部は、下方に向かって徐々に先細に絞られた集束部を備え、
前記回転体は、前記収容部と前記輸送部との間を区画する第１壁部と、前記第１壁部を回転させる軸部とを備え、
前記回転体は、前記第１壁部の先端が前記輸送部の前記集束部を通過するように配置され、
前記輸送部の前記集束部の内面と、前記集束部を通過するときの前記第１壁部の先端の回転軌跡との間には、回転方向前方側に向かって徐々に幅が大きくなる空間が設けられていることを特徴とする供給装置。 A feeding device used in a plug feeder that mixes a transport gas with a transport gas and feeds a transport target supplied to a transport passage, and supplies the transport target to the transport channel,
an accommodation unit that accommodates the object to be transported;
a transport unit located below the storage unit and connected to the transport passage;
a rotating body that transfers the object to be transported accommodated in the accommodation unit to the transportation unit;
A driving unit that rotationally drives the rotating body,
The transport section comprises a converging section that gradually tapers downward,
The rotating body includes a first wall portion that partitions between the storage portion and the transport portion, and a shaft portion that rotates the first wall portion,
The rotating body is arranged such that the tip of the first wall portion passes through the converging portion of the transport portion,
Between the inner surface of the converging portion of the transporting portion and the rotational trajectory of the tip of the first wall portion when passing through the converging portion , there is a space whose width gradually increases forward in the rotational direction. A feeding device, characterized in that it is provided with: 輸送通路に供給された被輸送物を輸送気体に混合して圧送するプラグフィーダーに用いられ、前記輸送通路に被輸送物を供給する供給装置であって、
被輸送物を収容する収容部と、
前記収容部の下側に位置して前記輸送通路に接続される輸送部と、
前記収容部に収容された被輸送物を前記輸送部へ移送する回転体と、
前記回転体を回転駆動する駆動部とを備え、
前記輸送部は、下方に向かって徐々に先細に絞られた集束部を備え、
前記回転体は、前記収容部と前記輸送部との間を区画する第１壁部と、前記第１壁部を回転させる軸部とを備え、
前記輸送部の前記集束部の内面と前記第１壁部の先端の回転軌跡との間には、回転方向前方側に向かって徐々に幅が大きくなる空間が設けられており、
前記回転体は、
前記第１壁部の主面に設けられ、前記軸部の軸線方向に間隔をあけて配置されるとともに、前記軸部の軸線を挟んで互い違いに配置される四半円形状の複数の第２壁部とを備えることを特徴とする供給装置。 A feeding device used in a plug feeder that mixes a transport gas with a transport gas and feeds a transport target supplied to a transport passage, and supplies the transport target to the transport channel,
an accommodation unit that accommodates the object to be transported;
a transport unit located below the storage unit and connected to the transport passage;
a rotating body that transfers the object to be transported accommodated in the accommodation unit to the transportation unit;
A driving unit that rotationally drives the rotating body,
The transport section comprises a converging section that gradually tapers downward,
The rotating body includes a first wall portion that partitions between the storage portion and the transport portion, and a shaft portion that rotates the first wall portion,
Between the inner surface of the converging portion of the transporting portion and the rotational trajectory of the tip of the first wall portion, a space whose width gradually increases toward the front in the rotational direction is provided,
The rotating body is
A plurality of quarter-circular second walls that are provided on the main surface of the first wall portion, are arranged at intervals in the axial direction of the shaft portion, and are alternately arranged across the axis line of the shaft portion. A feeding device characterized by comprising: 輸送通路に供給された被輸送物を輸送気体に混合させて圧送するプラグフィーダーであって、
請求項１又は請求項２に記載の供給装置と、
前記輸送通路に気体流を発生させる気体流発生装置とを備えることを特徴とするプラグフィーダー。 A plug feeder that mixes an object to be transported supplied to a transport passage with a transport gas and feeds it under pressure,
a feeding device according to claim 1 or claim 2;
and a gas flow generating device for generating a gas flow in the transport passage. 前記気体流発生装置は、前記輸送通路、及び前記供給装置の前記輸送部を負圧にする吸引ブロワーである請求項３に記載のプラグフィーダー。 4. The plug feeder according to claim 3, wherein said gas flow generating device is a suction blower that creates a negative pressure in said transporting passage and said transporting section of said feeding device.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007186334A (en) 2006-01-16 2007-07-26 Kumakura Industry Co Ltd Rotary feeder
JP2009082852A (en) 2007-10-01 2009-04-23 Kumakura Industry Co Ltd Feed device
JP2014125353A (en) 2012-12-27 2014-07-07 Kumakura Industry Co Ltd Pneumatic transportation system
JP2014149040A (en) 2013-02-01 2014-08-21 Kawata Mfg Co Ltd Switchgear

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01172526U (en) * 1988-05-25 1989-12-07

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007186334A (en) 2006-01-16 2007-07-26 Kumakura Industry Co Ltd Rotary feeder
JP2009082852A (en) 2007-10-01 2009-04-23 Kumakura Industry Co Ltd Feed device
JP2014125353A (en) 2012-12-27 2014-07-07 Kumakura Industry Co Ltd Pneumatic transportation system
JP2014149040A (en) 2013-02-01 2014-08-21 Kawata Mfg Co Ltd Switchgear

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