JP6210626B2 - Curve belt conveyor - Google Patents

Curve belt conveyor Download PDF

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JP6210626B2
JP6210626B2 JP2013151845A JP2013151845A JP6210626B2 JP 6210626 B2 JP6210626 B2 JP 6210626B2 JP 2013151845 A JP2013151845 A JP 2013151845A JP 2013151845 A JP2013151845 A JP 2013151845A JP 6210626 B2 JP6210626 B2 JP 6210626B2
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belt
roller
curved belt
urging
surface portion
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JP2015020890A (en
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博信 田川
博信 田川
淳一 藤本
淳一 藤本
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Okura Yusoki KK
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Description

本発明は、被搬送物を搬送するカーブベルトコンベヤに関するものである。   The present invention relates to a curved belt conveyor that conveys an object to be conveyed.

従来、例えば特許文献1に記載されたカーブベルトコンベヤが知られている。   Conventionally, for example, a curved belt conveyor described in Patent Document 1 is known.

この従来のカーブベルトコンベヤは、円形状に形成され中心部に挿通孔を有し平面視で半円状となるように折り曲げられた状態とされこの状態で回転して被搬送物を搬送するカーブベルトと、このカーブベルトの中心部の挿通孔に挿通された中心ピンと、カーブベルトを回転させかつカーブベルトを外周側に向けて付勢する駆動付勢手段であるベルト挟持ユニットとを備えている。   This conventional curved belt conveyor is formed in a circular shape, has an insertion hole in the center, is bent so as to be semicircular in plan view, and rotates in this state to convey the object to be conveyed. A belt, a center pin inserted through the insertion hole in the center of the curve belt, and a belt clamping unit that is a drive urging unit that rotates the curve belt and urges the curve belt toward the outer peripheral side. .

また、ベルト挟持ユニットは、カーブベルトの往路面部および復路面部間に挿入された中ローラである駆動ローラと、カーブベルトの往路面部を駆動ローラとの間で挟持する往路側ピンチローラと、カーブベルトの復路面部を駆動ローラとの間で挟持する復路側ピンチローラとを有している。そして、駆動ローラの回転中心軸線(軸芯)は、平面視でカーブベルトの径方向に沿った基準線と一致しているが、各ピンチローラの回転中心軸線(軸芯)は、平面視でカーブベルトの径方向に沿った基準線と一致せず、その基準線に対して所定角度(例えば7.5°)だけ傾斜している。   In addition, the belt clamping unit includes a driving roller that is a middle roller inserted between the forward path surface portion and the backward path surface portion of the curve belt, an outward path pinch roller that clamps the forward path surface portion of the curve belt with the drive roller, and the curve belt. And a return-side pinch roller that holds the return-path surface portion between the return-path surface portion and the driving roller. The rotation center axis (axis) of the drive roller coincides with the reference line along the radial direction of the curved belt in plan view, but the rotation center axis (axis) of each pinch roller is in plan view. It does not coincide with the reference line along the radial direction of the curve belt, and is inclined by a predetermined angle (for example, 7.5 °) with respect to the reference line.

特開平11−286305号公報(図1)Japanese Patent Laid-Open No. 11-286305 (FIG. 1)

しかしながら、上記従来のカーブベルトコンベヤのように、ベルト挟持ユニットがカーブベルトの一部を挟持してこの挟持した位置でカーブベルトを回転させかつカーブベルトを外周側へ付勢する構成では、カーブベルトへの負荷が比較的大きく、カーブベルトの耐久性が問題となるおそれがある。   However, in the configuration in which the belt clamping unit clamps a part of the curve belt, rotates the curve belt at the clamped position, and biases the curve belt to the outer peripheral side as in the conventional curve belt conveyor, The load on the belt is relatively large, and the durability of the curve belt may become a problem.

本発明は、このような点に鑑みなされたもので、カーブベルトの耐久性の向上を図ることができるカーブベルトコンベヤを提供することを目的とする。   This invention is made in view of such a point, and it aims at providing the curve belt conveyor which can aim at the improvement of durability of a curve belt.

求項記載のカーブベルトコンベヤは、円形状に形成され、中心部に被支持部を有し、平面視で半円状となるように折り曲げられた状態とされ、この状態で回転して被搬送物を搬送するカーブベルトと、このカーブベルトの前記被支持部を支持する支持手段と、前記カーブベルトを回転させる駆動手段と、この駆動手段とは異なる位置で前記カーブベルトを外周側に向けて付勢する付勢手段とを備え、前記付勢手段は、前記カーブベルトの往路面部を外周側に向けて付勢する往路側付勢手段と、前記カーブベルトの復路面部を外周側に向けて付勢する復路側付勢手段とにて構成され、前記往路側付勢手段は、前記カーブベルトの往路面部を挟持する往路側表面ローラおよび往路側裏面ローラを有し、前記復路側付勢手段は、前記カーブベルトの復路面部を挟持する復路側表面ローラおよび復路側裏面ローラを有し、前記往路側表面ローラは、平面視で前記カーブベルトの径方向に沿った基準線に対して一方向に傾斜した第1傾斜線と一致する回転中心軸線を中心として回転し、前記往路側裏面ローラは、平面視で前記往路側表面ローラの回転中心軸線と一致する回転中心軸線を中心として回転し、前記復路側表面ローラは、平面視で前記カーブベルトの径方向に沿った基準線に対して他方向に傾斜した第2傾斜線と一致する回転中心軸線を中心として回転し、前記復路側裏面ローラは、平面視で前記復路側表面ローラの回転中心軸線と一致する回転中心軸線を中心として回転するものである。 Curve belt conveyor Motomeko 1 described, is formed in a circular shape, has a supported portion in the center, is a state of being folded such that the semicircular shape in plan view, rotated in this state A curved belt that conveys the object to be conveyed, a supporting means that supports the supported portion of the curved belt, a driving means that rotates the curved belt, and the curved belt is placed on the outer peripheral side at a position different from the driving means. and a biasing means for biasing, the biasing means includes a forward with side biasing means for biasing the forward face of the curved belt on the outer peripheral side, the backward surface of the curved belt on the outer peripheral side The forward path urging means includes an outward path surface roller and an outward path back roller that sandwich the forward path surface portion of the curve belt, and the return path biasing means. The force means is the curve bell A return-side front roller and a return-side back roller that sandwich the return-path surface portion, and the forward-side surface roller is inclined in one direction with respect to a reference line along a radial direction of the curved belt in a plan view. The forward-side back roller rotates about a rotational center axis that coincides with the rotational center axis of the forward-side surface roller in plan view, and rotates around the rotational center axis that matches the inclined line. Is rotated around a rotation center axis that coincides with a second inclined line that is inclined in the other direction with respect to a reference line along the radial direction of the curved belt in a plan view, and the return-side back roller is a plan view. Rotating around a rotation center axis that coincides with the rotation center axis of the return path surface roller.

求項記載のカーブベルトコンベヤは、円形状に形成され、中心部に被支持部を有し、平面視で半円状となるように折り曲げられた状態とされ、この状態で回転して被搬送物を搬送するカーブベルトと、このカーブベルトの前記被支持部を支持する支持手段と、前記カーブベルトを回転させる駆動手段と、この駆動手段とは異なる位置で前記カーブベルトを外周側に向けて付勢する付勢手段とを備え、前記支持手段は、軸状部材と、この軸状部材の外周側に回転可能に設けられ、前記カーブベルトの前記被支持部の裏面側を支持する支持部材とを有し、前記カーブベルトの前記被支持部は、補強部材を裏面側に有し、前記支持手段の前記支持部材が、前記補強部材に当接しているものである。 Curve belt conveyors Motomeko 2 wherein is formed in a circular shape, has a supported portion in the center, is a state of being folded such that the semicircular shape in plan view, rotated in this state A curved belt that conveys the object to be conveyed, a supporting means that supports the supported portion of the curved belt, a driving means that rotates the curved belt, and the curved belt is placed on the outer peripheral side at a position different from the driving means. Biasing means that biases the shaft belt, and the support means is rotatably provided on the outer peripheral side of the shaft-shaped member and supports the back surface side of the supported portion of the curved belt. and a support member, the supported portion of the curve belt has a reinforcing member on the back side, the support member of the supporting means, in which in contact with the reinforcing member.

請求項記載のカーブベルトコンベヤは、請求項記載のカーブベルトコンベヤにおいて、補強部材は、環状の補強環状部材であり、支持手段の軸状部材が、前記補強環状部材内に挿入されているものである。 Curve belt conveyor according to claim 3, wherein, in the curved belt conveyor of claim 2, wherein the reinforcing member is a reinforcing ring annular member, the shaft member of the support means is inserted into said reinforcing annular member Is.

本発明によれば、カーブベルトへの負荷を軽減することが可能で、カーブベルトの耐久性の向上を図ることができる。   According to the present invention, it is possible to reduce the load on the curved belt and to improve the durability of the curved belt.

本発明の一実施の形態に係るカーブベルトコンベヤの平面図である。It is a top view of the curve belt conveyor concerning one embodiment of the present invention. 同上カーブベルトコンベヤの前面図である。It is a front view of a curve belt conveyor same as the above. 同上カーブベルトコンベヤの部分平面図である。It is a partial top view of a curve belt conveyor same as the above. 同上カーブベルトコンベヤの部分後面図である。It is a partial rear view of a curve belt conveyor same as the above. 同上カーブベルトコンベヤの往路側付勢手段の平面図である。It is a top view of the outward path urging means of a curve belt conveyor same as the above. 同上往路側付勢手段の側面図である。It is a side view of an outward path side urging means same as the above. 同上カーブベルトコンベヤの部分断面図である。It is a fragmentary sectional view of a curve belt conveyor same as the above. 同上カーブベルトコンベヤのカバー取付状態の平面図である。It is a top view of the cover attachment state of a curve belt conveyor same as the above. 同上カーブベルトコンベヤの搬送方向を逆にした状態の平面図である。It is a top view of the state which reversed the conveyance direction of the curve belt conveyor same as the above. 本発明の他の実施の形態に係るカーブベルトコンベヤの部分断面図である。It is a fragmentary sectional view of the curve belt conveyor concerning other embodiments of the present invention.

本発明の一実施の形態について図1ないし図9を参照して説明する。   An embodiment of the present invention will be described with reference to FIGS.

図中の1はカーブベルトコンベヤで、このカーブベルトコンベヤ1は、カーブ角度が180°のもので、例えばケース等の被搬送物Wをその向きを変更せずに半円の移動軌跡を描くように180°旋回搬送(Uターン搬送)する。   In the figure, 1 is a curved belt conveyor, and this curved belt conveyor 1 has a curved angle of 180 °, and draws a semicircular movement trajectory without changing the direction of the object to be conveyed W such as a case, for example. 180 ° swivel (U-turn conveyance).

つまり、カーブベルトコンベヤ1(以下、「コンベヤ1」という)は、例えば図1に示されるように、被搬送物Wを左側から右側へ向かう右回り(時計回り)の搬送方向に搬送する。なお、このコンベヤ1は、図1に示す右旋回搬送の状態から、逆に被搬送物Wを右側から左側へ向かう左回り(反時計回り)の搬送方向に搬送する左旋回搬送の状態に切り換えることが可能となっている(図9参照)。   That is, the curved belt conveyor 1 (hereinafter, referred to as “conveyor 1”) conveys the article W to be conveyed in a clockwise (clockwise) conveyance direction from the left side to the right side as shown in FIG. The conveyor 1 is changed from the state of the right turn conveyance shown in FIG. 1 to the state of the left turn conveyance for conveying the object W in the counterclockwise conveyance direction from the right side to the left side. Switching is possible (see FIG. 9).

コンベヤ1は、図1および図2等に示されるように、円形状(略円形状を含む)に形成され、中心部に被支持部2を有し、平面視で半円状となるように折り曲げられた状態(2枚折り状態)とされ、この状態で所定方向に回転して被搬送物Wを所定の搬送方向に向けて搬送するカーブベルト3を備え、このカーブベルト3がフレーム4に装着されている。なお、カーブベルト3は、フレーム4に対して工具レスで脱着可能である。   As shown in FIGS. 1 and 2, etc., the conveyor 1 is formed in a circular shape (including a substantially circular shape), has a supported portion 2 in the center, and has a semicircular shape in plan view. In this state, a curved belt 3 that rotates in a predetermined direction and transports the article W to be transported in a predetermined transport direction is provided on the frame 4. It is installed. The curve belt 3 can be attached to and detached from the frame 4 without a tool.

また、コンベヤ1は、カーブベルト3の中央部の被支持部2を支持する中央部支持手段である支持手段6と、カーブベルト3を所定の回転方向に回転(回行)させる駆動手段7と、この駆動手段7とは異なる位置でカーブベルト3を外周側に向けて付勢する付勢手段8とを備え、これら駆動手段7と付勢手段8とが互いに独立している。つまり、これら駆動手段7と付勢手段8とは、互いに別個独立の関係にあり、互いに異なる位置に配設されている。   Further, the conveyor 1 includes a support unit 6 that is a center support unit that supports the supported portion 2 at the center of the curve belt 3, and a drive unit 7 that rotates (rotates) the curve belt 3 in a predetermined rotation direction. The driving means 7 includes a biasing means 8 that biases the curve belt 3 toward the outer peripheral side at a position different from the driving means 7, and the driving means 7 and the biasing means 8 are independent of each other. That is, the driving means 7 and the urging means 8 are in a mutually independent relationship and are disposed at different positions.

この付勢手段8は、カーブベルト3の回転時にこのカーブベルト3の中心側へのずれを防止するためのもので、例えばカーブベルト3の半円状の往路面部3aの外周部を外周側に向けて付勢する複数、例えば4つの往路側付勢手段11と、カーブベルト3の半円状の復路面部3bの外周部を外周側に向けて付勢する複数、例えば4つの復路側付勢手段12とにて構成されている。   This urging means 8 is for preventing the curve belt 3 from shifting to the center side when the curve belt 3 is rotated. For example, the outer peripheral portion of the semicircular outward path surface portion 3a of the curve belt 3 is set to the outer peripheral side. A plurality of, for example, four forward-path urging means 11 that urge toward the outer periphery, and a plurality of, for example, four, backward-path urgings that bias the outer peripheral portion of the semicircular return path surface portion 3b of the curve belt 3 toward the outer peripheral side. And means 12.

そして、1つの駆動手段(駆動ユニット)7は、カーブベルト3の外周部における周方向中央位置に配設され、4つの往路側付勢手段(往路側ターンローラユニット)11および4つの復路側付勢手段(復路側ターンローラユニット)12は、カーブベルト3の外周部における周方向中央位置以外の位置に配設され、これら往路側・復路側付勢手段11,12は周方向に互いに間隔をおいて並んでいる。   One drive means (drive unit) 7 is disposed at the circumferential center position of the outer peripheral portion of the curve belt 3, and includes four forward path biasing means (forward path turn roller units) 11 and four return path side attachments. The urging means (return path side turn roller unit) 12 is disposed at a position other than the central position in the circumferential direction on the outer periphery of the curve belt 3, and the forward path and return path urging means 11, 12 are spaced apart from each other in the circumferential direction. Are lined up.

なお、駆動手段7の近くの位置で互いに隣り合う往路側付勢手段11と復路側付勢手段12との間の離間距離は、例えば駆動手段7から離れた位置で互いに隣り合う往路側付勢手段11と復路側付勢手段12との間の離間距離よりも長い。また、駆動手段7は、カーブベルト3の外周部における周方向中央位置以外の位置に配設するようにしてもよい。   Note that the distance between the forward path biasing means 11 and the backward path biasing means 12 that are adjacent to each other at a position near the driving means 7 is, for example, the forward path biasing that is adjacent to each other at a position away from the driving means 7. It is longer than the separation distance between the means 11 and the return path urging means 12. Further, the driving means 7 may be disposed at a position other than the center position in the circumferential direction on the outer peripheral portion of the curve belt 3.

フレーム4は、カーブベルト3の往路面部3aの裏面の全体(略全体を含む)を水平状に支持する板状のベルト支持体16を有している。カーブベルト3の回転時には、往路面部3aの裏面がベルト支持体16の上面上を摺動し、往路面部3aの表面(上面)である搬送面にて被搬送物Wが載置搬送される。なお、ベルト支持体16は、複数本の脚体15の上端部に取り付けられている。   The frame 4 includes a plate-like belt support 16 that horizontally supports the entire back surface (including substantially the entire back surface) of the forward path surface portion 3a of the curve belt 3. When the curve belt 3 rotates, the back surface of the forward path surface portion 3a slides on the upper surface of the belt support 16, and the article W is placed and transported on the transport surface which is the surface (upper surface) of the forward path surface portion 3a. The belt support 16 is attached to the upper ends of the plurality of legs 15.

また、ベルト支持体16の一方側である左側の前端部には、左右方向長手状の一方側エンドローラユニット17が取り付けられている。ベルト支持体16の他方側である右側の前端部には、左右方向長手状の他方側エンドローラユニット18が一方側エンドローラユニット17と同一直線上に並ぶように取り付けられている。なお、両エンドローラユニット17,18の内端部間には小隙間20が存在し、この小隙間20に支持手段6の一部が配設されている。   Also, a left side longitudinal end-side end roller unit 17 is attached to the left front end of one side of the belt support 16. The other end roller unit 18 in the left-right direction is attached to the right front end, which is the other side of the belt support 16, so as to be aligned with the one end roller unit 17. A small gap 20 exists between the inner ends of both end roller units 17 and 18, and a part of the support means 6 is disposed in the small gap 20.

両エンドローラユニット17,18の各々は、左右方向長手状の支軸21と、この支軸21の外周側に回転可能に設けられた円形環状の複数の小ローラ22とを有している。この各小ローラ22は、例えば金属製のベアリングにて構成されている。そして、一方側エンドローラユニット17の小ローラ22には、2枚折り状態のカーブベルト3の左側前端部における折曲部(図1では搬送始端部)が巻き掛けられ、かつ、他方側エンドローラユニット18の小ローラ22には、2枚折り状態のカーブベルト3の右側前端部における折曲部(図1では搬送終端部)が巻き掛けられている。   Each of the end roller units 17, 18 has a support shaft 21 that is longitudinal in the left-right direction, and a plurality of circular annular small rollers 22 that are rotatably provided on the outer peripheral side of the support shaft 21. Each of the small rollers 22 is constituted by a metal bearing, for example. Then, the small roller 22 of the one-side end roller unit 17 is wound around a bent portion (the conveyance start end portion in FIG. 1) at the left front end portion of the two-folded curved belt 3, and the other-side end roller The small roller 22 of the unit 18 is wound around a bent portion (the conveyance end portion in FIG. 1) at the right front end portion of the curve belt 3 in a folded state.

駆動手段7は、図3および図4等にも示されるように、カーブベルト3の復路面部3bのみを挟持してこの復路面部3bに対してのみ駆動力を付与するもので、往路面部3aを挟持せず、復路面部3bのみを所定の挟持圧をもって挟持する構成となっている。   As shown in FIGS. 3 and 4 and the like, the driving means 7 sandwiches only the return path surface portion 3b of the curved belt 3 and applies a driving force only to the return path surface portion 3b. It is the structure which does not clamp and clamps only the inward road surface part 3b with a predetermined clamping pressure.

駆動手段7は、カーブベルト3の復路面部3bの外周部の周方向中央部を挟持する円筒状の駆動ローラ31および円筒状のピンチローラ32を有している。つまり、駆動手段7は、カーブベルト3の復路面部3bの所定部分を挟持した状態で回転してカーブベルト3を駆動回転させる上下で対をなす駆動専用のローラ31,32を有している。なお、両ローラ31,32の回転中心軸線(軸芯)は、平面視で常に互いに一致している。   The driving means 7 includes a cylindrical driving roller 31 and a cylindrical pinch roller 32 that sandwich the circumferential center of the outer peripheral portion of the return path surface portion 3b of the curve belt 3. In other words, the driving means 7 has the driving-dedicated rollers 31 and 32 that are paired up and down to rotate and drive and rotate the curve belt 3 while sandwiching a predetermined portion of the return path surface portion 3b of the curve belt 3. Note that the rotation center axes (axial cores) of the rollers 31 and 32 always coincide with each other in plan view.

駆動ローラ31は、往路面部3aと復路面部3bとの間に挿入配設され、その下端部が復路面部3bの裏面に接触している。そして、図4に示されるように、無駄なベルト磨耗を防ぐために、駆動ローラ31の上端部は、例えば往路面部3aの裏面(下面)に対して非接触の状態となっており、駆動ローラ31の上端部と往路面部3aの裏面との間には、所定寸法の隙間28が存在している。なお、隙間28を設けずに、駆動ローラ31の上端部が往路面部3aの裏面に接触するようにしてもよい。   The drive roller 31 is inserted and disposed between the forward path surface portion 3a and the return path surface portion 3b, and a lower end thereof is in contact with the back surface of the return path surface portion 3b. As shown in FIG. 4, in order to prevent unnecessary belt wear, the upper end portion of the drive roller 31 is in a non-contact state with respect to the back surface (lower surface) of the forward path surface portion 3a, for example. There is a gap 28 of a predetermined dimension between the upper end of the outer surface and the back surface of the forward path surface portion 3a. Note that the upper end portion of the driving roller 31 may be in contact with the back surface of the forward path surface portion 3a without providing the gap 28.

また、ピンチローラ32は、復路面部3bの下方に配設され、その上端部が復路面部3bの表面に接触してこの復路面部3bの裏面を駆動ローラ31の下端部に押し付けている。   Further, the pinch roller 32 is disposed below the return path surface portion 3b, and an upper end portion of the pinch roller 32 contacts the surface of the return path surface portion 3b and presses the back surface of the return path surface portion 3b against the lower end portion of the drive roller 31.

駆動ローラ31は、水平状の支軸33にて回転可能に支持され、駆動源であるモータ34から出力される動力を動力伝達手段35を介して受けて駆動回転するものである。動力伝達手段35は、例えばモータ側プーリ36と、ローラ側プーリ37と、これら両プーリ36,37間に掛け渡された無端状の伝動ベルト38とにて構成されている。モータ側プーリ36は、モータ34の出力軸34aに固着されている。ローラ側プーリ37は、駆動ローラ31に固着されている。なお、モータ34は、正逆回転可能なものである。   The drive roller 31 is rotatably supported by a horizontal support shaft 33, and is driven to rotate by receiving power output from a motor 34 as a drive source via a power transmission means 35. The power transmission means 35 includes, for example, a motor-side pulley 36, a roller-side pulley 37, and an endless transmission belt 38 spanned between the pulleys 36 and 37. The motor-side pulley 36 is fixed to the output shaft 34a of the motor 34. The roller pulley 37 is fixed to the drive roller 31. The motor 34 can be rotated forward and backward.

そして、駆動ローラ31は、モータ34の作動時に動力伝達手段35から動力を受けて、平面視でカーブベルト3の径方向に沿った基準線aと一致する回転中心軸線を中心として回転する。なお、この基準線(基準中央線)aは、平面視でカーブベルト3の半円中心点とカーブベルト3の外周中央点とを結んだ直線である。   The drive roller 31 receives power from the power transmission means 35 when the motor 34 is operated, and rotates around the rotation center axis line that coincides with the reference line a along the radial direction of the curve belt 3 in plan view. The reference line (reference center line) a is a straight line connecting the semicircular center point of the curve belt 3 and the outer periphery center point of the curve belt 3 in plan view.

また、ピンチローラ32は、水平状の支軸41にて回転可能に支持され、付勢部材であるコイルばね42の付勢力に基づいて復路面部3bの表面に圧接した状態で従動回転するものである。コイルばね42は、回動アーム43の基端部とばね受け部材44との間に介装されている。回動アーム43の先端部に支軸41が固着され、この支軸41の外周側にピンチローラ32が回転可能に設けられている。   The pinch roller 32 is rotatably supported by a horizontal support shaft 41, and is driven to rotate in a state of being pressed against the surface of the return path surface portion 3b based on the biasing force of the coil spring 42 that is a biasing member. is there. The coil spring 42 is interposed between the base end portion of the rotating arm 43 and the spring receiving member 44. A support shaft 41 is fixed to the tip of the rotating arm 43, and a pinch roller 32 is rotatably provided on the outer peripheral side of the support shaft 41.

そして、ピンチローラ32は、駆動ローラ31との間で復路面部3bを挟持した状態で、平面視で駆動ローラ31の回転中心軸線と一致する回転中心軸線を中心として回転する。なお、コイルばね42の付勢力に抗して回動アーム43の基端部を押し上げると、回動アーム43がその先端側が下降するように回動し、その結果、ピンチローラ32が下動し、駆動ローラ31とピンチローラ32とによる復路面部3bの挟持が解除される。   The pinch roller 32 rotates around a rotation center axis that coincides with the rotation center axis of the drive roller 31 in plan view, with the return path surface portion 3b sandwiched between the pinch roller 32 and the drive roller 31. When the base end of the rotating arm 43 is pushed up against the urging force of the coil spring 42, the rotating arm 43 is rotated so that the distal end thereof is lowered, and as a result, the pinch roller 32 is moved downward. Then, the holding of the return path surface portion 3b by the drive roller 31 and the pinch roller 32 is released.

往路側付勢手段11は、図5および図6等にも示されるように、カーブベルト3の往路面部3aを外周側に向けて引っ張るもので、往路面部3aを所定の挟持圧をもって挟持する構成となっている。   As shown in FIGS. 5 and 6 and the like, the forward path side urging means 11 pulls the forward path surface portion 3a of the curved belt 3 toward the outer peripheral side, and is configured to clamp the forward path surface portion 3a with a predetermined clamping pressure. It has become.

往路側付勢手段11は、カーブベルト3の往路面部3aの外周部のうち周方向中央部以外の部分を挟持する円筒状の往路側表面ローラ51および円筒状の往路側裏面ローラ52を有している。つまり、往路側付勢手段11は、カーブベルト3の往路面部3aの所定部分を挟持した状態で回転して往路面部3aを外周側に向けて付勢する上下で対をなす付勢専用のローラ51,52を有している。なお、両ローラ51,52の回転中心軸線(軸芯)は、平面視で常に互いに一致している。   The outward path urging means 11 includes a cylindrical outward path surface roller 51 and a cylindrical outward path back roller 52 that sandwich the outer peripheral portion of the outward path surface portion 3a of the curve belt 3 other than the central portion in the circumferential direction. ing. In other words, the forward path urging means 11 rotates in a state where a predetermined portion of the forward path surface portion 3a of the curve belt 3 is sandwiched and urges the forward path surface portion 3a toward the outer peripheral side and forms a pair of urging dedicated rollers. 51 and 52. Note that the rotation center axes (axial cores) of the rollers 51 and 52 always coincide with each other in plan view.

往路側表面ローラ51は、往路面部3aの上方に配設され、その下端部が往路面部3aの表面に接触している。往路側裏面ローラ52は、往路面部3aの下方に配設され、その上端部が往路面部3aの裏面に接触してこの往路面部3aの表面を往路側表面ローラ51に押し付けている。   The outbound path surface roller 51 is disposed above the outbound path surface portion 3a, and a lower end thereof is in contact with the surface of the outbound path surface portion 3a. The forward path side rear surface roller 52 is disposed below the forward path surface portion 3a, and an upper end thereof is in contact with the rear surface of the forward path surface portion 3a to press the surface of the forward path surface portion 3a against the forward path surface roller 51.

往路側表面ローラ51は、水平状の支軸53にて回転可能に支持され、付勢部材であるコイルばね54の付勢力に基づいて往路面部3aの表面に圧接した状態で従動回転するものである。支軸53は、上下方向の軸線Xを中心として水平方向に回動調整可能な回動部材56に固着され、この回動部材56の上面からノブ57が突出している。   The forward path surface roller 51 is rotatably supported by a horizontal support shaft 53, and is driven to rotate in a state of being in pressure contact with the surface of the forward path surface portion 3a based on a biasing force of a coil spring 54 as a biasing member. is there. The support shaft 53 is fixed to a rotation member 56 that can be adjusted in a horizontal direction around the vertical axis X, and a knob 57 projects from the upper surface of the rotation member 56.

また同様に、往路側裏面ローラ52は、水平状の支軸58にて回転可能に支持され、コイルばね54の付勢力に基づいて往路面部3aの裏面に圧接した状態で従動回転するものである。支軸58は、上下方向の軸線Xを中心として回動調整可能な回動部材59に固着され、この回動部材59の下面とボルト60の頭部との間にコイルばね54が介装されている。   Similarly, the outward-side back roller 52 is rotatably supported by a horizontal support shaft 58, and is driven to rotate in a state of being pressed against the back surface of the outward-path surface portion 3a based on the urging force of the coil spring 54. . The support shaft 58 is fixed to a rotation member 59 that can be adjusted to rotate about the vertical axis X, and a coil spring 54 is interposed between the lower surface of the rotation member 59 and the head of the bolt 60. ing.

そして、往路側表面ローラ51は、平面視でカーブベルト3の径方向に沿った基準線bに対して一方向(往路面部3aの走行方向前方)に所定角度αをもって傾斜した第1傾斜線b1と一致する回転中心軸線を中心として回転する。また、往路側裏面ローラ52は、平面視で往路側表面ローラ51の回転中心軸線と一致する回転中心軸線を中心として回転する。   The forward-side surface roller 51 is a first inclined line b1 that is inclined at a predetermined angle α in one direction (forward in the traveling direction of the outward-path surface portion 3a) with respect to the reference line b along the radial direction of the curve belt 3 in plan view. Rotate around the center axis of rotation that coincides with. Further, the outward-path-side back roller 52 rotates around a rotation center axis that coincides with the rotation center axis of the outward-path surface roller 51 in plan view.

この基準線bは、平面視でカーブベルト3の半円中心点とカーブベルト3の外周中央点以外の点とを結んだ直線である。また、基準線bと第1傾斜線b1とがなす角度である所定角度αは、例えば5°に設定されている。そして、この所定角度αは調整可能となっており、また、第1傾斜線b1を基準線bに対して反対側に傾斜させることも可能である(図9参照)。   The reference line b is a straight line connecting the semicircular center point of the curve belt 3 and points other than the outer periphery center point of the curve belt 3 in plan view. Further, the predetermined angle α that is an angle formed by the reference line b and the first inclined line b1 is set to 5 °, for example. The predetermined angle α can be adjusted, and the first inclined line b1 can be inclined to the opposite side with respect to the reference line b (see FIG. 9).

なお、コイルばね54の付勢力に抗してノブ57を引き上げると、往路側表面ローラ51が上動し、往路側表面ローラ51と往路側裏面ローラ52とによる往路面部3aの挟持が解除される。   When the knob 57 is lifted against the urging force of the coil spring 54, the forward path surface roller 51 moves up, and the forward path surface portion 3a is not clamped by the forward path surface roller 51 and the forward path back roller 52. .

復路側付勢手段12は、カーブベルト3の復路面部3bを外周側に向けて引っ張るもので、復路面部3bを所定の挟持圧をもって挟持する構成となっている。   The return path urging means 12 pulls the return path surface portion 3b of the curve belt 3 toward the outer peripheral side, and is configured to clamp the return path surface portion 3b with a predetermined clamping pressure.

復路側付勢手段12は、カーブベルト3の復路面部3bの外周部のうち周方向中央部以外の部分を挟持する円筒状の復路側表面ローラ61および円筒状の復路側裏面ローラ62を有している。つまり、復路側付勢手段12は、カーブベルト3の復路面部3bの所定部分(つまり、復路面部3bのうち駆動手段7の両ローラ31,32にて挟持された部分とは異なる部分)を挟持した状態で回転して復路面部3bを外周側に向けて付勢する上下で対をなす付勢専用のローラ61,62を有している。なお、両ローラ61,62の回転中心軸線(軸芯)は、平面視で常に互いに一致している。   The return path urging means 12 includes a cylindrical return path surface roller 61 and a cylindrical return path back surface roller 62 that sandwich a portion of the outer periphery of the return path surface portion 3b of the curved belt 3 other than the central portion in the circumferential direction. ing. That is, the return path urging means 12 clamps a predetermined portion of the return path surface portion 3b of the curve belt 3 (that is, a portion different from the portion clamped by the rollers 31 and 32 of the drive means 7 in the return path surface portion 3b). In this state, the rollers 61 and 62 for energizing are paired up and down to rotate and rotate the return path surface portion 3b toward the outer peripheral side. Note that the rotation center axes (axial cores) of the rollers 61 and 62 always coincide with each other in plan view.

復路側表面ローラ61は、復路面部3bの下方に配設され、その上端部が復路面部3bの表面に接触している。復路側裏面ローラ62は、復路面部3bの上方に配設され、その下端部が復路面部3bの裏面に接触してこの復路面部3bの表面を復路側表面ローラ61に押し付けている。   The return path surface roller 61 is disposed below the return path surface portion 3b, and an upper end thereof is in contact with the surface of the return path surface portion 3b. The return-side back roller 62 is disposed above the return-path surface portion 3b, and a lower end thereof is in contact with the back surface of the return-path surface portion 3b and presses the surface of the return-path surface portion 3b against the return-side surface roller 61.

復路側表面ローラ61は、水平状の支軸63にて回転可能に支持され、付勢部材であるコイルばね64の付勢力に基づいて復路面部3bの表面に圧接した状態で従動回転するものである。支軸63は、上下方向の軸線Yを中心として水平方向に回動調整可能な回動部材66に固着されている。   The return-path-side surface roller 61 is rotatably supported by a horizontal support shaft 63 and is driven to rotate in a state of being pressed against the surface of the return-path surface portion 3b based on the urging force of a coil spring 64 that is an urging member. is there. The support shaft 63 is fixed to a rotating member 66 that can be rotated and adjusted in the horizontal direction about the vertical axis Y.

また同様に、復路側裏面ローラ62は、水平状の支軸68にて回転可能に支持され、コイルばね64の付勢力に基づいて復路面部3bの裏面に圧接した状態で従動回転するものである。支軸68は、上下方向の軸線Yを中心として回動調整可能な回動部材69に固着され、この回動部材69の上面とボルト70の頭部との間にコイルばね64が介装されている。   Similarly, the return-side back roller 62 is rotatably supported by a horizontal support shaft 68, and is driven to rotate while being pressed against the back surface of the return-path surface portion 3b based on the urging force of the coil spring 64. . The support shaft 68 is fixed to a rotating member 69 that can be adjusted to rotate about the vertical axis Y, and a coil spring 64 is interposed between the upper surface of the rotating member 69 and the head of the bolt 70. ing.

そして、復路側表面ローラ61は、平面視でカーブベルト3の径方向に沿った基準線bに対して他方向(復路面部3bの走行方向前方)に所定角度αをもって傾斜した第2傾斜線b2と一致する回転中心軸線を中心として回転する。また、復路側裏面ローラ62は、平面視で復路側表面ローラ61の回転中心軸線と一致する回転中心軸線を中心として回転する。   Then, the return-side surface roller 61 has a second inclined line b2 that is inclined at a predetermined angle α in the other direction (forward in the traveling direction of the return-path surface portion 3b) with respect to the reference line b along the radial direction of the curve belt 3 in plan view. Rotate around the center axis of rotation that coincides with. Further, the return-side back roller 62 rotates about a rotation center axis that coincides with the rotation center axis of the return-side front roller 61 in plan view.

この基準線bは、上述の往路側付勢手段11に関する基準線bと同様、平面視でカーブベルト3の半円中心点とカーブベルト3の外周中央点以外の点とを結んだ直線である。また、基準線bと第2傾斜線b2とがなす角度である所定角度αは、例えば5°に設定されている。そして、この所定角度αは調整可能となっており、また、第2傾斜線b2を基準線bに対して反対側に傾斜させることも可能である(図9参照)。   This reference line b is a straight line connecting the semicircular center point of the curve belt 3 and a point other than the outer periphery center point of the curve belt 3 in plan view, like the reference line b related to the forward path urging means 11 described above. . Further, the predetermined angle α that is an angle formed by the reference line b and the second inclined line b2 is set to 5 °, for example. The predetermined angle α can be adjusted, and the second inclined line b2 can be inclined to the opposite side with respect to the reference line b (see FIG. 9).

なお、コイルばね64の付勢力に抗してボルト70を押し下げると、復路側表面ローラ61が下動し、復路側表面ローラ61と復路側裏面ローラ62とによる復路面部3bの挟持が解除される。   When the bolt 70 is pushed down against the urging force of the coil spring 64, the return-side surface roller 61 moves down, and the return-path surface portion 3b is not clamped by the return-side surface roller 61 and the return-side back roller 62. .

カーブベルト3は、展開状態では真円の円形状をなし、平面視で半円状となるように2枚折り状態にして使用するものである。カーブベルト3は、図7等に示されるように、例えば中心部(円中心部)に円形の貫通孔71が表裏面に貫通して形成された可撓性を有する円形状のシート状部材72と、このシート状部材72の貫通孔71の周囲部裏面に固着され、シート状部材72の中心部を補強する円形環状の補強部材である補強環状部材73とにて構成されている。   The curved belt 3 is used in a folded state so as to have a perfect circular shape in a developed state and to be a semicircular shape in a plan view. As shown in FIG. 7 and the like, the curved belt 3 has a flexible circular sheet-like member 72 in which a circular through hole 71 is formed through the front and back surfaces at the center (circular center), for example. And a reinforcing annular member 73, which is a circular annular reinforcing member that is fixed to the back surface of the periphery of the through hole 71 of the sheet-like member 72 and reinforces the central portion of the sheet-like member 72.

そして、このカーブベルト3の中心部の被支持部2は、表面側のシート状部材72の中心部(貫通孔71とこの貫通孔71の周囲部とからなる部分)と、裏面側の補強環状部材73とにて構成されている。つまり、カーブベルト3の被支持部2は、カーブベルト3の他の部分よりも厚い肉厚部である。なお、補強環状部材73の内孔74が貫通孔71に連通しており、これら貫通孔71と内孔74とは同じ大きさである。   The supported portion 2 at the center of the curve belt 3 includes a center portion of the sheet-like member 72 on the front surface side (a portion comprising the through hole 71 and the peripheral portion of the through hole 71) and a reinforcing ring on the back surface side. And a member 73. That is, the supported portion 2 of the curve belt 3 is a thicker portion than the other portions of the curve belt 3. The inner hole 74 of the reinforcing annular member 73 communicates with the through hole 71, and the through hole 71 and the inner hole 74 have the same size.

支持手段6は、カーブベルト3の回転時にこのカーブベルト3にずれが生じないように、カーブベルト3の中央部の被支持部2を所定位置に位置決めするためのものである。   The support means 6 is for positioning the supported portion 2 at the center of the curve belt 3 at a predetermined position so that the curve belt 3 is not displaced when the curve belt 3 rotates.

支持手段6は、水平状で丸軸状の中央支持ピンである軸状部材76と、この軸状部材76の軸方向中央の外周側に回転可能に設けられ、カーブベルト3の被支持部2の裏面側を回転しながら支持する円筒状の支持部材77とを有している。   The support means 6 is a shaft-like member 76 that is a horizontal and round shaft-like center support pin, and is rotatably provided on the outer peripheral side of the axial center of the shaft-like member 76, and the supported portion 2 of the curve belt 3. And a cylindrical support member 77 that supports the back side of the plate while rotating.

軸状部材76は、その基端部(後端部)がフレーム4のベルト支持体16の左右方向中央部に固着され、その先端部(前端部)がシート状部材72の貫通孔71および補強環状部材73の内孔74に挿脱可能に嵌合挿入されている。また、軸状部材76は、基端側の径大軸部78と、この径大軸部78よりも径小状で補強環状部材73内および貫通孔71に裏面側から挿通された先端側の径小軸部79とにて構成されており、この径小軸部79の先端がカーブベルト3の被支持部2の貫通孔71から前方に突出している。そして、この軸状部材76は、基端側のみで支持された片持ち状態であり、この軸状部材76の先端部が自由端部となっている。   The shaft-like member 76 has a base end portion (rear end portion) fixed to a central portion in the left-right direction of the belt support 16 of the frame 4, and a tip end portion (front end portion) of the through-hole 71 of the sheet-like member 72 and reinforcement. The annular member 73 is removably fitted into the inner hole 74. Further, the shaft-shaped member 76 has a large-diameter shaft portion 78 on the base end side and a distal-end side that is smaller in diameter than the large-diameter shaft portion 78 and inserted into the reinforcing annular member 73 and the through hole 71 from the back surface side. The small-diameter shaft portion 79 is configured to protrude forward from the through-hole 71 of the supported portion 2 of the curved belt 3. The shaft-like member 76 is in a cantilever state supported only on the base end side, and the distal end portion of the shaft-like member 76 is a free end portion.

支持部材77は、両エンドローラユニット17,18間の小隙間20に回転可能に配設されている。この支持部材77の基端側の外周面は、等径の円筒面状に形成されているが、支持部材77の先端側の外周面は、先端に向かって徐々に縮径する截頭円錐面状に形成されている。そして、支持部材77の先端側が、カーブベルト3の被支持部2の裏面側の補強環状部材73に当接している。   The support member 77 is rotatably disposed in the small gap 20 between the both end roller units 17 and 18. The outer peripheral surface on the base end side of the support member 77 is formed in a cylindrical surface with an equal diameter, but the outer peripheral surface on the front end side of the support member 77 is a truncated conical surface that gradually decreases in diameter toward the front end. It is formed in a shape. The front end side of the support member 77 is in contact with the reinforcing annular member 73 on the back surface side of the supported portion 2 of the curve belt 3.

なお、図8に示されるように、フレーム4には外側カバー80が脱着可能に取り付けられ、この外側カバー80によってカーブベルト3の往路面部3aの外周部の上方部および往路側付勢手段11の上方部が覆われている。   As shown in FIG. 8, an outer cover 80 is detachably attached to the frame 4, and the outer cover 80 allows the upper portion of the outer peripheral portion of the outward path surface portion 3 a of the curve belt 3 and the outward path side urging means 11. The upper part is covered.

次に、コンベヤ1の作用等を説明する。   Next, the operation of the conveyor 1 will be described.

図1に示すように、被搬送物Wがカーブベルト3の搬送始端部に搬入されると、被搬送物Wは、カーブベルト3の往路面部3aの搬送面にて搬送方向に向かって右回りに180°旋回搬送され、カーブベルト3の搬送終端部から搬出される。なお、図9に示す状態に切り換えた場合には、被搬送物Wは、カーブベルト3の往路面部3aの搬送面にて搬送方向に向かって左回りに180°旋回搬送される。   As shown in FIG. 1, when the object to be conveyed W is carried into the conveyance start end portion of the curve belt 3, the object to be conveyed W turns clockwise in the conveyance direction on the conveyance surface of the forward path surface portion 3 a of the curve belt 3. , And is carried out from the conveyance end portion of the curve belt 3. Note that when the state is switched to the state shown in FIG. 9, the article W to be conveyed is rotated and rotated 180 ° counterclockwise in the conveyance direction on the conveyance surface of the forward path surface portion 3 a of the curve belt 3.

このとき、駆動手段7のローラ31,32がカーブベルト3の復路面部3bを挟持した状態で回転してこのカーブベルト3全体を回転させ、往路側付勢手段11のローラ51,52がカーブベルト3の往路面部3aを挟持した状態で回転してこの往路面部3aを外周側に向けて付勢し、復路側付勢手段12のローラ61,62がカーブベルト3の復路面部3bを挟持した状態で回転してこの復路面部3bを外周側に向けて付勢し、かつ、支持手段6がカーブベルト3の中心部の被支持部2を支持する。このため、カーブベルト3は、中心側へのずれや横ずれが生じることなく所定位置で回転し、その結果、被搬送物Wが安定的に搬送される。   At this time, the rollers 31 and 32 of the driving means 7 rotate in a state of sandwiching the return path surface portion 3b of the curve belt 3 to rotate the entire curve belt 3, and the rollers 51 and 52 of the outward path side urging means 11 3 in a state in which the forward path surface portion 3a is sandwiched, and the forward path surface portion 3a is urged toward the outer peripheral side, and the rollers 61 and 62 of the backward path urging means 12 sandwich the backward path surface portion 3b of the curve belt 3. , The return path surface portion 3b is urged toward the outer peripheral side, and the support means 6 supports the supported portion 2 at the center of the curve belt 3. For this reason, the curve belt 3 rotates at a predetermined position without causing a shift toward the center side or a lateral shift, and as a result, the article to be conveyed W is stably conveyed.

また、例えばコンベヤ1の清掃時等において、カーブベルト3をフレーム4から取り外す場合、作業者は、まず、外側カバー80を外し、次いで、往路側付勢手段11のノブ57を引き上げて往路側表面ローラ51と往路側裏面ローラ52とによる往路面部3aの圧接挟持を解除する。   For example, when removing the curved belt 3 from the frame 4 when cleaning the conveyor 1, the operator first removes the outer cover 80, and then pulls up the knob 57 of the outward-side biasing means 11 to raise the outward-side surface. The pressure contact clamping of the forward path surface portion 3a by the roller 51 and the forward path side rear surface roller 52 is released.

次いで、復路側付勢手段12のボルト70を押し下げて復路側表面ローラ61と復路側裏面ローラ62とによる復路面部3bの圧接挟持を解除し、その後、駆動手段7の回動アーム43の基端部を押し上げて駆動ローラ31とピンチローラ32とによる復路面部3bの圧接挟持を解除する。こうして、作業者は、カーブベルト3を前方へ引き抜くようにして取り外すことが可能となる。   Subsequently, the bolt 70 of the return path urging means 12 is pushed down to release the pressure contact nipping of the return path surface portion 3b by the return path surface roller 61 and the return path back surface roller 62, and then the base end of the rotating arm 43 of the drive means 7 The portion is pushed up to release the pressure contact clamping of the return path surface portion 3b by the drive roller 31 and the pinch roller 32. Thus, the operator can remove the curve belt 3 by pulling it forward.

そして、上記コンベヤ1によれば、カーブベルト3を所定の回転方向に回転させる駆動手段7と、この駆動手段7とは異なる位置でカーブベルト3を外周側に向けて付勢する付勢手段(往路側付勢手段11、復路側付勢手段12)8とを備え、これら駆動手段7と付勢手段8とが互いに独立した構成であるため、従来の構成に比べて、カーブベルト3への負荷を軽減でき、カーブベルト3の耐久性の向上を図ることができ、しかも、駆動手段7や付勢手段8の取付位置が制限されず、部品の共通化も図ることができる。   And according to the said conveyor 1, the drive means 7 which rotates the curve belt 3 to a predetermined rotation direction, and the urging means which urges | curves the curve belt 3 toward an outer peripheral side in a position different from this drive means 7 ( The forward path urging means 11 and the backward path urging means 12) 8 are provided, and the driving means 7 and the urging means 8 are independent from each other. The load can be reduced, the durability of the curve belt 3 can be improved, and the mounting position of the driving means 7 and the urging means 8 is not limited, and parts can be shared.

また、駆動手段7は、カーブベルト3の復路面部3bに対してのみ駆動力を付与するため、カーブベルト3への負荷を効果的に軽減できるばかりでなく、カーブベルト3を安定的に回転させることができる。すなわち例えば、往路面部3aおよび復路面部3bの両方に対して駆動力を付与する構成では、確かに全体としての駆動力は増加するものの、往路面部3a側の駆動力と復路面部3b側の駆動力とが均等にならず、バランスが崩れ、その結果、カーブベルト3への負荷が増大したり、カーブベルト3の回転走行が不安定となって脱落したりする不具合が生じるおそれがあるが、このコンベヤ1ではそのような不具合の発生を防止できる。   Further, since the driving means 7 applies a driving force only to the return road surface portion 3b of the curved belt 3, not only can the load on the curved belt 3 be effectively reduced, but the curved belt 3 can be rotated stably. be able to. That is, for example, in the configuration in which the driving force is applied to both the forward road surface portion 3a and the backward road surface portion 3b, although the overall driving force certainly increases, the driving force on the forward road surface portion 3a side and the driving force on the backward road surface portion 3b side Is not even and the balance is lost. As a result, there is a risk that the load on the curve belt 3 increases or the rotation of the curve belt 3 becomes unstable and falls off. The conveyor 1 can prevent such a problem from occurring.

さらに、駆動手段7の両ローラ31,32の回転中心軸線が平面視で互いに一致し、往路側付勢手段11の両ローラ51,52の回転中心軸線が平面視で互いに一致し、復路側付勢手段12の両ローラ61,62の回転中心軸線が平面視で互いに一致する構成であるから、カーブベルト3への負荷を適切に軽減でき、カーブベルト3の耐久性の向上をより一層図ることができる。   Further, the rotation center axes of the rollers 31 and 32 of the driving means 7 coincide with each other in a plan view, and the rotation center axes of both rollers 51 and 52 of the forward path side urging means 11 coincide with each other in a plan view. Since the rotation center axes of the rollers 61 and 62 of the biasing means 12 coincide with each other in plan view, the load on the curve belt 3 can be appropriately reduced, and the durability of the curve belt 3 can be further improved. Can do.

また、支持手段6は、固定部材である軸状部材76と、この軸状部材76の外周側に回転可能に設けられカーブベルト3の中心部の被支持部2の裏面側を回転しながら支持する回転部材である支持部材77とを有するため、カーブベルト3の中心部を傷めることなく、カーブベルト3の中心部のずれを適切に防止できる。   Further, the support means 6 is supported while rotating on the back side of the supported portion 2 at the center of the curve belt 3 provided rotatably on the outer peripheral side of the shaft-shaped member 76 as a fixed member. Therefore, the center of the curve belt 3 can be appropriately prevented from being displaced without damaging the center of the curve belt 3.

さらに、支持手段6の軸状部材76がカーブベルト3の被支持部2の補強環状部材73内に嵌合挿入され、かつ、支持部材77がその補強環状部材73に当接しているため、カーブベルト3の耐久性の向上をより一層図ることができる。   Further, since the shaft-like member 76 of the supporting means 6 is fitted and inserted into the reinforcing annular member 73 of the supported portion 2 of the curved belt 3, and the supporting member 77 is in contact with the reinforcing annular member 73, the curve The durability of the belt 3 can be further improved.

また、各エンドローラユニット17,18の小ローラ22が金属製のベアリングにて構成されているため、例えば磨耗粉の発生や静電気の発生等を適切に防止できる。   Further, since the small rollers 22 of the end roller units 17 and 18 are formed of metal bearings, for example, generation of wear powder and generation of static electricity can be appropriately prevented.

なお、上記実施の形態では、支持手段6の軸状部材76が片持ち状態で、その軸状部材76の先端部が自由端部となっている構成について説明したが、例えば図10に示すように、支持手段6の軸状部材76を両持ち状態にした構成でもよい。   In the above embodiment, the shaft member 76 of the support means 6 is cantilevered, and the tip of the shaft member 76 is a free end. For example, as shown in FIG. In addition, the shaft-like member 76 of the support means 6 may be in a dual-supported state.

この図10に示すコンベヤ1では、軸状部材76の先端部を支持する軸支持体81がフレーム4の脚体15に取付具(ボルトおよびナット等)84にて脱着可能に取り付けられている。軸支持体81は、上下方向長手状で板状の支持部82を有し、この支持部82の上端部に形成された円形状の孔部83に軸状部材76が挿脱可能に嵌合挿入されている。   In the conveyor 1 shown in FIG. 10, a shaft support body 81 that supports the distal end portion of the shaft-like member 76 is detachably attached to the leg body 15 of the frame 4 with a fixture (bolt, nut, etc.) 84. The shaft support body 81 has a plate-like support portion 82 that is longitudinal in the vertical direction, and the shaft-like member 76 is removably fitted into a circular hole portion 83 formed in the upper end portion of the support portion 82. Has been inserted.

また、コンベヤ1は、例えばエンドローラユニット17,18の代わりに、ナイフエッジをフレーム4に設けた構成等でもよい。   The conveyor 1 may have a configuration in which a knife edge is provided on the frame 4 instead of the end roller units 17 and 18, for example.

さらに、カーブベルト3の被支持部2は、軸状部材76を内側から挿通する貫通孔71を有するものには限定されず、例えば貫通孔71を有さず、軸状部材76の先端面(前面)が当接する当接受面を有するものでもよい。   Further, the supported portion 2 of the curved belt 3 is not limited to the one having the through hole 71 through which the shaft-like member 76 is inserted from the inside. It may have a contact receiving surface with which the front surface contacts.

また、往路側付勢手段11の両ローラ51,52や復路側付勢手段12の両ローラ61,62は、予め軸芯を基準線bに対して傾斜させた状態に固定して使用する固定タイプには限定されず、例えばカーブベルト3の回転方向(走行方向)に応じてこのカーブベルト3から受ける力で回転方向前方に揺動し、この揺動により軸芯が基準線bに対して傾斜した状態となる揺動タイプでもよい。   Further, the rollers 51 and 52 of the forward path urging means 11 and the rollers 61 and 62 of the backward path urging means 12 are fixed and used in a state where the shaft core is previously inclined with respect to the reference line b. The type is not limited and, for example, the curve belt 3 is swung forward in the rotation direction by the force received from the curve belt 3 according to the rotation direction (traveling direction). A rocking type that is inclined may be used.

さらに、駆動手段7の数や付勢手段8の数は任意であり、コンベヤ1の大きさ等に応じて適宜設定され、例えば駆動手段7を複数設けた構成等でもよい。   Furthermore, the number of the drive means 7 and the number of the urging means 8 are arbitrary, and may be appropriately set according to the size of the conveyor 1. For example, a configuration in which a plurality of drive means 7 are provided may be used.

また、カーブベルト3の被支持部2の補強環状部材73は、円形環状には限定されず、例えば矩形環状等の多角形環状でもよい。   Further, the reinforcing annular member 73 of the supported portion 2 of the curved belt 3 is not limited to a circular annular shape, and may be a polygonal annular shape such as a rectangular annular shape, for example.

さらに、カーブベルト3の被支持部2は、例えば軸状部材76の先端面が当接する環状でない板状の補強部材を裏面側に有するものでもよい。   Furthermore, the supported portion 2 of the curve belt 3 may have a non-annular plate-like reinforcing member on the back side, for example, with which the tip surface of the shaft-like member 76 abuts.

また、カーブベルト3は、補強部材を有さず、円形状のシート状部材のみからなるものでもよい。   Moreover, the curve belt 3 does not have a reinforcing member, but may consist only of a circular sheet-like member.

さらに、駆動手段7は、カーブベルト3の復路面部3bのみを挟持してこの復路面部3bに対してのみ駆動力を付与するものには限定されず、例えばカーブベルト3の往路面部3aのみを挟持してこの往路面部3aに対してのみ駆動力を付与するものでもよい。すなわち、駆動手段7は、カーブベルト3の往路面部3aおよび復路面部3bのいずれか一方に対してのみ駆動力を付与するものが好ましいが、往路面部3aおよび復路面部3bの両方に対して駆動力を付与するようにしてもよい。   Further, the driving means 7 is not limited to the one that clamps only the return road surface portion 3b of the curve belt 3 and applies the driving force only to the return road surface portion 3b. For example, the drive means 7 clamps only the forward road surface portion 3a of the curve belt 3. Then, a driving force may be applied only to the forward path surface portion 3a. That is, it is preferable that the driving means 7 applies a driving force only to either the forward path surface portion 3a or the backward path surface portion 3b of the curve belt 3, but the driving force applies to both the forward path surface portion 3a and the backward path surface portion 3b. May be given.

1 カーブベルトコンベヤ
2 被支持部
3 カーブベルト
3a 往路面部
3b 復路面部
6 支持手段
7 駆動手段
8 付勢手段
11 往路側付勢手段
12 復路側付勢手
51 往路側表面ローラ
52 往路側裏面ローラ
61 復路側表面ローラ
62 復路側裏面ローラ
73 補強部材である補強環状部材
76 軸状部材
77 支持部材
a 基準線
b 基準線
b1 第1傾斜線
b2 第2傾斜線
W 被搬送物
1 Curved Belt Conveyor 2 Supported Part 3 Curved Belt
3a Outward surface
3b Return road surface part 6 Support means 7 Drive means 8 Energizing means
11 Outward biasing means
12 Return with side urging hand stage
51 Outward surface roller
52 Outward side back roller
61 Return side roller
62 Back side roller
73 Reinforcing annular member as a reinforcing member
76 Shaft-shaped member
77 Support member a Reference line b Reference line
b1 First slope line
b2 2nd inclined line W

Claims (3)

円形状に形成され、中心部に被支持部を有し、平面視で半円状となるように折り曲げられた状態とされ、この状態で回転して被搬送物を搬送するカーブベルトと、
このカーブベルトの前記被支持部を支持する支持手段と、
前記カーブベルトを回転させる駆動手段と、
この駆動手段とは異なる位置で前記カーブベルトを外周側に向けて付勢する付勢手段とを備え、
前記付勢手段は、前記カーブベルトの往路面部を外周側に向けて付勢する往路側付勢手段と、前記カーブベルトの復路面部を外周側に向けて付勢する復路側付勢手段とにて構成され、
前記往路側付勢手段は、前記カーブベルトの往路面部を挟持する往路側表面ローラおよび往路側裏面ローラを有し、
前記復路側付勢手段は、前記カーブベルトの復路面部を挟持する復路側表面ローラおよび復路側裏面ローラを有し、
前記往路側表面ローラは、平面視で前記カーブベルトの径方向に沿った基準線に対して一方向に傾斜した第1傾斜線と一致する回転中心軸線を中心として回転し、
前記往路側裏面ローラは、平面視で前記往路側表面ローラの回転中心軸線と一致する回転中心軸線を中心として回転し、
前記復路側表面ローラは、平面視で前記カーブベルトの径方向に沿った基準線に対して他方向に傾斜した第2傾斜線と一致する回転中心軸線を中心として回転し、
前記復路側裏面ローラは、平面視で前記復路側表面ローラの回転中心軸線と一致する回転中心軸線を中心として回転する
ことを特徴とするカーブベルトコンベヤ。
A curved belt that is formed in a circular shape, has a supported portion at the center, is bent so as to be semicircular in plan view, and rotates in this state to convey the object to be conveyed;
A support means for supporting the supported portion of the curved belt;
Drive means for rotating the curve belt;
Urging means for urging the curved belt toward the outer peripheral side at a position different from the driving means;
The urging means includes an outward urging means for urging the outward surface portion of the curved belt toward the outer peripheral side, and a backward urging means for urging the backward surface portion of the curved belt toward the outer peripheral side. Configured
The outward path urging means includes an outward path surface roller and an outward path back roller that sandwich the forward path surface portion of the curve belt,
The return path urging means includes a return path surface roller and a return path back surface roller that sandwich the return path surface portion of the curved belt,
The forward-side surface roller rotates around a rotation center axis that coincides with a first inclined line that is inclined in one direction with respect to a reference line along a radial direction of the curved belt in plan view,
The forward path side back roller rotates around a rotation center axis that coincides with the rotation center axis of the forward path front roller in plan view,
The return path-side surface roller rotates around a rotation center axis that coincides with a second inclined line that is inclined in the other direction with respect to a reference line along the radial direction of the curved belt in plan view,
The return path back roller has features and to Luca over blanking the belt conveyor to rotate around the central axis of rotation which coincides with the rotational center axis of the backward-side front roller in plan view.
円形状に形成され、中心部に被支持部を有し、平面視で半円状となるように折り曲げられた状態とされ、この状態で回転して被搬送物を搬送するカーブベルトと、
このカーブベルトの前記被支持部を支持する支持手段と、
前記カーブベルトを回転させる駆動手段と、
この駆動手段とは異なる位置で前記カーブベルトを外周側に向けて付勢する付勢手段とを備え、
前記支持手段は、
軸状部材と、
この軸状部材の外周側に回転可能に設けられ、前記カーブベルトの前記被支持部の裏面側を支持する支持部材とを有し、
前記カーブベルトの前記被支持部は、補強部材を裏面側に有し、
前記支持手段の前記支持部材が、前記補強部材に当接している
ことを特徴とするカーブベルトコンベヤ。
A curved belt that is formed in a circular shape, has a supported portion at the center, is bent so as to be semicircular in plan view, and rotates in this state to convey the object to be conveyed;
A support means for supporting the supported portion of the curved belt;
Drive means for rotating the curve belt;
Urging means for urging the curved belt toward the outer peripheral side at a position different from the driving means;
The support means is
An axial member;
A support member that is rotatably provided on the outer peripheral side of the shaft-like member and supports the back side of the supported portion of the curved belt;
The supported portion of the curve belt has a reinforcing member on the back side,
Wherein the support member of the support means, characterized and to Luca over blanking belt conveyor that is in contact with the reinforcing member.
補強部材は、環状の補強環状部材であり、
支持手段の軸状部材が、前記補強環状部材内に挿入されている
ことを特徴とする請求項記載のカーブベルトコンベヤ。
The reinforcing member is an annular reinforcing annular member,
The curved belt conveyor according to claim 2 , wherein the shaft-like member of the support means is inserted into the reinforcing annular member.
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