JP5235200B2 - Supply origin detection device of supply conveyor in horizontal bag making and filling machine - Google Patents

Supply origin detection device of supply conveyor in horizontal bag making and filling machine Download PDF

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JP5235200B2
JP5235200B2 JP2010026694A JP2010026694A JP5235200B2 JP 5235200 B2 JP5235200 B2 JP 5235200B2 JP 2010026694 A JP2010026694 A JP 2010026694A JP 2010026694 A JP2010026694 A JP 2010026694A JP 5235200 B2 JP5235200 B2 JP 5235200B2
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bag making
filling machine
supply conveyor
guide rail
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JP2011162308A (en
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晃 水谷
浩彰 大村
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株式会社フジキカイ
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Description

本発明は、チェーンやベルト等の無端索体に配設した搬送部材で物品を搬送する横形製袋充填機における供給コンベヤの供給原点を定めるための供給原点検出装置に関する。   The present invention relates to a supply origin detection device for determining a supply origin of a supply conveyor in a horizontal bag making and filling machine that conveys an article by a conveyance member disposed on an endless cord such as a chain or a belt.

チェーンやべルト等の無端索体に配設された搬送部材で物品を搬送する供給コンベヤは、横形製袋充填機や胴巻き包装機や押上げ式ストレッチ包装機等、物品をフィルム包装するための包装機の供給側に、包装機の一部としてまたは包装機とは別体で配設され、或いは、計量器の供給側等に配設されている。これらの機器は、供給コンベヤの搬送部材等を原点センサで検出して供給原点を定めることにより、供給コンベヤの搬送部材が物品を搬送するタイミングと、フィルム移送手段やシール手段等の後工程の処理手段との駆動タイミングとが同調するように駆動制御される。例えば特許文献１のように、物品を搬送し終えて倒伏した後の無端索体の復路（リターン側）で搬送部材を検出するように原点センサを配設することが知られている。   Supply conveyors that transport articles with transport members arranged on endless cords such as chains and belts are used for film packaging of articles, such as horizontal bag making and filling machines, waist-wrapping machines, and push-up type stretch packaging machines. It is arranged on the supply side of the packaging machine as a part of the packaging machine or separately from the packaging machine, or on the supply side of the measuring instrument. These devices detect the feeding conveyor's conveying member, etc. with the origin sensor and determine the feeding origin, so that the conveying conveyor's conveying member conveys the article and the post-processing of the film transfer means, sealing means, etc. The drive is controlled so that the drive timing with the means is synchronized. For example, as in Patent Document 1, it is known that an origin sensor is provided so as to detect a conveying member in a return path (return side) of an endless cord body after the article has been conveyed and laid down.

特開２００８−６８９９２号公報JP 2008-68992 A

特許文献１におけるストレッチ包装機等は、処理能力が１分間あたり数十包であるが、横形製袋充填機では、処理能力が１分間あたり数百包であり、高速で処理される。また、横形製袋充填機は、供給コンベヤの下流側の駆動スプロケットと上流側の従動スプロケットとにチェーンが巻き掛けられ、該チェーンを下方に弛ませた状態で構成されている。このため、横形製袋充填機の供給コンベヤにおいて、無端索体の復路は、供給コンベヤの搬送速度の変化等に伴って無端索体に作用する遠心力の大きさ等に変化が生じて無端索体の弛み角度や移動経路等の状態が変化する。従って、無端索体の復路（リターン側）に配設した原点センサの出力に基づき、例えば、通常運転開始前の準備運転時等に供給コンベヤを低速で運転させながら、定めた供給原点位置と、準備運転から高速で処理される通常運転になった後に原点センサで検出する場合の供給原点位置とにずれが生じ、物品の供給タイミングと後工程の処理手段の処理タイミングにずれが生じてしまう。従って、供給原点の検出信頼性の低下を招くおそれがある。   The stretch wrapping machine or the like in Patent Document 1 has a processing capacity of several tens of packets per minute, but the horizontal bag making and filling machine has a processing capacity of several hundreds per minute and is processed at high speed. Further, the horizontal bag making and filling machine is configured in such a manner that a chain is wound around a drive sprocket on the downstream side and a driven sprocket on the upstream side of the supply conveyor, and the chain is slackened downward. For this reason, in the supply conveyor of the horizontal bag making and filling machine, the return path of the endless cord is caused by the change in the centrifugal force acting on the endless cord along with the change in the transport speed of the supply conveyor, etc. The state of the body slack angle, movement path, etc. changes. Therefore, based on the output of the origin sensor arranged on the return path (return side) of the endless cable body, for example, while operating the supply conveyor at a low speed during the preparatory operation before the start of normal operation, A shift occurs in the supply origin position when the origin sensor detects after the normal operation that is processed at a high speed from the preparatory operation, and a shift occurs in the supply timing of the article and the processing timing of the processing means in the subsequent process. Therefore, there is a possibility that the detection reliability of the supply origin is lowered.

この発明は、高速処理される供給コンベヤの搬送速度に変化が生じても、誤検出することのない横形製袋充填機の供給原点検出装置を提供することを目的とする。   It is an object of the present invention to provide a supply origin detection device for a horizontal bag making and filling machine that is not erroneously detected even if a change occurs in the conveyance speed of a supply conveyor that is processed at high speed.

請求項１の発明に係る横形製袋充填機の供給コンベヤにおいては、搬送ラインに沿って配設されたガイドレール１１の案内部１３上を走行する無端索体１５と、該無端索体１５に所定間隔毎に配設された搬送部材１８を備え、該搬送部材１８の間に物品７を支持して搬送する。前記ガイドレール１１には前記案内部１３の下側を支持すると共に前記搬送部材１８の下側を支持して案内する支持部１４が配設されている。前記案内部１３には、前記無端索体１５の走行領域外で、且つ、前記搬送部材１８が通過する領域で、搬送ラインに交差する側方に貫通した横孔２４が形成されている。該横孔２４に光を通過させる光学式検出手段２６，２７を、前記搬送部材１８の延出通路１２ａから側方に外れたベッド１２より下方に配設して、該光学式検出手段２６，２７により前記搬送部材１８を検出する。   In the supply conveyor of the horizontal bag making and filling machine according to the first aspect of the present invention, the endless cord 15 traveling on the guide portion 13 of the guide rail 11 disposed along the transport line, and the endless cord 15 A conveying member 18 is provided at predetermined intervals, and the article 7 is supported and conveyed between the conveying members 18. The guide rail 11 is provided with a support portion 14 for supporting and guiding the lower side of the guide portion 13 and supporting the lower side of the transport member 18. The guide portion 13 is formed with a lateral hole 24 penetrating to the side intersecting the transport line outside the travel region of the endless cord 15 and in the region through which the transport member 18 passes. Optical detection means 26 and 27 that allow light to pass through the lateral hole 24 are disposed below the bed 12 that is laterally removed from the extension passage 12a of the conveying member 18, and the optical detection means 26 and 27 27 detects the conveying member 18.

請求項１の発明を前提とする請求項２の発明においては、前記延出通路１２ａから前記横孔２４の周辺に向けて落下した物品のカス等による光の通過有無の誤検出を防止する異物排除手段２５を有する。   In the invention of claim 2 premised on the invention of claim 1, a foreign matter for preventing erroneous detection of the passage of light due to debris or the like of an article dropped from the extending passage 12a toward the periphery of the lateral hole 24 Excluding means 25 is provided.

請求項２の発明を前提とする請求項３の発明において、前記異物排除手段は、前記支持部を上下方向に貫通した縦孔２５または切欠部である。
請求項１〜３のうちいずれか一つの発明を前提とする請求項４の発明において、前記横孔２４は、前記ガイドレール１１の搬送始端側近傍に形成されている。 In the invention of claim 3 premised on the invention of claim 2, the foreign matter removing means is a vertical hole 25 or a notch passing through the support portion in the vertical direction.
In the invention of claim 4 based on any one of claims 1 to 3, the lateral hole 24 is formed in the vicinity of the conveyance start end side of the guide rail 11.

請求項１〜４のうちいずれか一つの発明を前提とする請求項５の発明において、前記光学式検出手段は、前記案内部１３を挟む両側の一方に配設された反射板２７と、その他方に配設された反射型のセンサを備えている。   The invention according to claim 5, which presupposes any one of the inventions according to claims 1 to 4, wherein the optical detection means includes a reflecting plate 27 disposed on one of both sides sandwiching the guide portion 13, and the like. A reflective sensor disposed on the side.

請求項１の発明では、ガイドレールの案内部上を走行する無端索体と共に搬送部材がガイドレールの支持部により支持されて案内されながら、ガイドレールを走行する往路（キャリア側）で、案内部に形成された横孔に光学式検出手段が光を通過させて、該搬送部材のみを検出するので、高速処理される供給コンベヤの搬送速度が例えば高速から低速に変化することによって遠心力が変化しても、無端索体の弛み角度や移動経路等の状態が変化しないことから、高速処理においても供給原点の検出信頼性を損ねることがない。また、搬送部材の延出通路から側方に外れたベッドより下方に光学式検出手段を配設しているので、ベッド間の延出通路から自然に落下した物品のカス等が光学式検出手段に付着するのを回避し得ることから、高速処理においても供給原点の検出信頼性を損ねることがない。   According to the first aspect of the present invention, in the forward path (carrier side) that travels on the guide rail while the conveying member is supported and guided by the support portion of the guide rail together with the endless cord traveling on the guide portion of the guide rail, the guide portion Since the optical detection means detects only the conveying member by allowing light to pass through the horizontal hole formed in the centrifugal hole, the centrifugal force changes when the conveying speed of the supply conveyor to be processed at high speed changes from high speed to low speed, for example. Even so, since the state of the slack angle of the endless cord and the movement path do not change, the detection reliability of the supply origin is not impaired even in high-speed processing. Further, since the optical detection means is disposed below the bed that is laterally removed from the extension passage of the conveying member, the waste of the article that naturally falls from the extension passage between the beds is detected by the optical detection means. Therefore, even in high-speed processing, the detection reliability of the supply origin is not impaired.

請求項２の発明では、ベッド間の延出通路から自然に落下した物品のカス等がガイドレールの横孔の周辺に溜まって検出不良が発生するのを異物排除手段によって防止できるので、光学式検出手段による光が横孔を確実に通過して、供給原点の検出信頼性を損ねることがない。   In the invention of claim 2, since the foreign matter removing means can prevent the debris of the articles that naturally fall from the extending passage between the beds from collecting around the lateral hole of the guide rail and causing the detection failure, the optical type The light by the detection means does not reliably pass through the lateral hole and impair the detection reliability of the supply origin.

請求項３の発明では、前記異物排除手段をガイドレールの横孔に対応させて、ガイドレールの支持部に上下方向に貫通した縦孔、または切欠部を設けるだけの簡単な構成により、ベッド間の延出通路から自然に落下した物品のカス等がガイドレールの横孔の周辺に溜まって検出不良が発生するのを防止できる。   According to a third aspect of the present invention, the foreign matter removing means is made to correspond to the lateral hole of the guide rail, and a simple structure in which a vertical hole penetrating in the vertical direction or a notch is provided in the support portion of the guide rail is provided. It is possible to prevent the occurrence of a detection failure due to accumulation of debris or the like of an article that naturally falls from the extension passage of the guide rail and accumulates around the lateral hole of the guide rail.

請求項４の発明では、前記横孔をガイドレールの搬出始端側近傍に形成することにより、例えば作業者が手作業でベッドに物品を供する場合等における供給領域外である位置に対応して横孔が形成されるので、物品供給時に自然に落下した物品のカス等が、ガイドレールの搬送始端側近傍に溜まることがない。従って、供給原点の検出信頼性を損ねることがない。   In the invention of claim 4, by forming the lateral hole in the vicinity of the unloading start end side of the guide rail, for example, when the operator manually supplies the article to the bed, the lateral hole corresponds to a position outside the supply region. Since the hole is formed, the debris and the like of the articles that have dropped naturally during the supply of the articles do not accumulate near the conveyance start end side of the guide rail. Accordingly, the supply origin detection reliability is not impaired.

請求項５の発明では、光学式検出手段が前記案内部を挟む両側の一方に配設された反射板と、その他方に配設された反射型のセンサとを備えることから、反射板側には電源等の配線が不要であるため、配線取り回しを簡素にすることができる。例えば、光学式検出手段を配設する場所が開閉式のカバー等の可動する部材であっても、反射板には配線がないため、断線等を回避することができる。   In the invention of claim 5, since the optical detection means includes a reflection plate disposed on one of both sides sandwiching the guide portion and a reflection type sensor disposed on the other side, the reflection plate is provided on the reflection plate side. Since no wiring such as a power source is required, wiring can be simplified. For example, even if the place where the optical detection means is disposed is a movable member such as an openable / closable cover, disconnection or the like can be avoided because the reflecting plate has no wiring.

（ａ）は横形製袋充填機の略体図であり、（ｂ）はその物品供給コンベヤの搬送始端側を示す部分略体図であり、（ｃ）は該物品供給コンベヤにおけるガイドレールの部分平面図であり、（ｄ）は該ガイドレールの部分斜視図である。(A) is a schematic view of a horizontal bag making and filling machine, (b) is a partial schematic view showing a conveying start end side of the article supply conveyor, and (c) is a portion of a guide rail in the article supply conveyor. It is a top view, (d) is the fragmentary perspective view of this guide rail. （ａ）は該物品供給コンベヤのガイドレール及び搬送部材等を示す部分略体図であり、（ｂ）は（ａ）のＡ−Ａ箇所における部分断面図である。(A) is a partial schematic drawing which shows the guide rail of this article supply conveyor, a conveyance member, etc., (b) is a fragmentary sectional view in the AA location of (a). （ａ）は該物品供給コンベヤのガイドレールの横孔を押送部材が塞ぐ状態を示す部分略体図であり、（ｂ）は（ａ）のＢ−Ｂ箇所における部分断面図である。(A) is a partial approximate body figure which shows the state which a pushing member closes the horizontal hole of the guide rail of this goods supply conveyor, (b) is a fragmentary sectional view in the BB location of (a).

図１（ａ）に示す横形製袋充填機は、原反ロール１から引き出した帯状フィルム２を製袋手段３で筒状に成形して、物品供給コンベヤ６の搬送路１０の中心である搬送ラインに沿って送られてきた物品７を筒状のフィルム４中に置いた状態で該筒状フィルム４をシール・切断してピロー包装品を得るようになっている。   The horizontal bag making and filling machine shown in FIG. 1 (a) forms a belt-like film 2 drawn from a raw fabric roll 1 into a cylindrical shape by a bag making means 3, and conveys the center of a conveyance path 10 of an article supply conveyor 6. The cylindrical film 4 is sealed and cut while the article 7 sent along the line is placed in the cylindrical film 4 to obtain a pillow packaged product.

物品供給コンベヤ６は、図２（ｂ）及び図３（ｂ）に示すように、枠体２８を備えている。枠体２８の上面には、搬送ラインを挟んで該ラインと交差する左右両側（側方）に一対のベッド１２と一対の物品ガイド９が配設されている。一対の物品ガイド９，９の間には搬送ラインに沿って搬送路１０が形成されている。一対のベッド１２，１２の間にはベッドから上方に延出する後述の押送部材１８の延出通路として上下方向に貫通した隙間１２ａが搬送ラインに沿って延設されている。一対のベッド１２，１２の下方には搬送ラインに沿って配設されたガイドレール１１が枠体２８に支持されている（不図示）。   As shown in FIGS. 2B and 3B, the article supply conveyor 6 includes a frame 28. On the upper surface of the frame body 28, a pair of beds 12 and a pair of article guides 9 are disposed on both the left and right sides (sides) that intersect the conveyance line. A conveyance path 10 is formed between the pair of article guides 9 along the conveyance line. Between the pair of beds 12, 12, a gap 12 a penetrating in the vertical direction is extended along the transport line as an extension passage of a later-described pushing member 18 extending upward from the bed. Below the pair of beds 12, 12, a guide rail 11 disposed along a conveyance line is supported by a frame body 28 (not shown).

図１（ｂ）に示すように、ガイドレール１１の搬送始端１１ａは、上下方向に揺動し得るレバー２２に連結されており、レバー２２の傾き及びガイドレール１１の高さ位置を調節して搬送路１０に対するガイドレール１１の高さ位置を調節し得るようになっている。また、レバー２２を傾斜させることによって、供給コンベヤ６の往路側（キャリア側）で倒伏している後述の押送部材１８を、往路側に配設されたガイドレール１１の搬送始端１１ａに至る迄に起立状態に円滑に移行させ得る。   As shown in FIG. 1B, the conveyance start end 11a of the guide rail 11 is connected to a lever 22 that can swing in the vertical direction, and the inclination of the lever 22 and the height position of the guide rail 11 are adjusted. The height position of the guide rail 11 with respect to the conveyance path 10 can be adjusted. Further, by inclining the lever 22, a later-described pushing member 18 lying on the forward path side (carrier side) of the supply conveyor 6 reaches the conveyance start end 11a of the guide rail 11 disposed on the forward path side. Smooth transition to the standing state is possible.

ガイドレール１１は、図２及び図３に示すように、隙間１２ａの下方で、搬送ラインに沿って延設された案内部１３と、案内部１３の下端を支持すると共に案内部１３の下端から左右両側に突出して案内部１３より幅広の支持部１４とを有している。案内部１３の上端には、ローラリンク１６とピンリンク１７とが交互に連結された無端状のチェーン１５（無端索体）が搬送ラインに沿って走行し得るように載置されている。具体的には、ローラ１６ａ内に挿通されたピン１７ａによりピンプレート１７ｂがローラプレート１６ｂに連結され、ローラ１６ａが案内部１３の上端に載置されていると共に、ローラプレート１６ｂが案内部１３の上端付近の一対の側壁１３ａを挟み込むように載置され、チェーン１５が案内部１３上を走行し得るように配設されている。   As shown in FIGS. 2 and 3, the guide rail 11 supports the lower end of the guide portion 13 and the guide portion 13 extending along the transport line below the gap 12 a and from the lower end of the guide portion 13. It has a support portion 14 that protrudes from the left and right sides and is wider than the guide portion 13. An endless chain 15 (endless cord) in which roller links 16 and pin links 17 are alternately connected is placed on the upper end of the guide portion 13 so as to be able to travel along the transport line. Specifically, a pin plate 17 b is connected to the roller plate 16 b by a pin 17 a inserted into the roller 16 a, the roller 16 a is placed on the upper end of the guide portion 13, and the roller plate 16 b is connected to the guide portion 13. The pair of side walls 13a in the vicinity of the upper end is placed so as to be sandwiched therebetween, and the chain 15 is disposed so as to be able to travel on the guide portion 13.

前記チェーン１５に所定間隔毎に配設された押送部材１８（搬送部材）は、図３（ｂ）に示すように、左右の脚部１９ａと両脚部１９ａの前端部間で架設された上板部１９ｂとを有する移動部１９と、上板部１９ｂから上方へ突出する物品搬送部２０とを備え、両脚部１９ａがピン１７ａに対し回動可能に支持されている。ピン１７ａより後方で一方の脚部１９ａに錘２１が取着されている。移動部１９の両脚部１９ａはピンプレート１７ｂ及びローラプレート１６ｂを左右両側から挟み、両脚部１９ａの下側が支持部１４に当接している。物品搬送部２０は、ベッド１２の間の隙間（延出通路）１２ａから上方へ延出して搬送路１０で物品ガイド９間に露出している。チェーン１５が案内部１３の上側を走行すると、物品搬送部２０が搬送路１０で隙間１２ａを搬送ラインに沿って移動する。従って、搬送路１０で隙間１２ａから上方へ突出する押送部材１８の間に載置された物品７を押送部材１８で押して（支持して）搬送路１０上を上流側から下流側へ搬送することができる。   As shown in FIG. 3B, the pushing member 18 (conveying member) disposed on the chain 15 at predetermined intervals is an upper plate constructed between the left and right leg portions 19a and the front end portions of both leg portions 19a. A moving part 19 having a part 19b and an article conveying part 20 projecting upward from the upper plate part 19b are provided, and both leg parts 19a are rotatably supported with respect to the pin 17a. A weight 21 is attached to one leg 19a behind the pin 17a. The both leg portions 19a of the moving portion 19 sandwich the pin plate 17b and the roller plate 16b from both the left and right sides, and the lower side of both leg portions 19a is in contact with the support portion 14. The article conveyance unit 20 extends upward from a gap (extension passage) 12 a between the beds 12 and is exposed between the article guides 9 in the conveyance path 10. When the chain 15 travels on the upper side of the guide unit 13, the article transport unit 20 moves on the transport path 10 along the transport line along the clearance 12 a. Therefore, the article 7 placed between the pushing members 18 protruding upward from the gap 12a in the conveying path 10 is pushed (supported) by the pushing member 18 and conveyed on the conveying path 10 from the upstream side to the downstream side. Can do.

貫通孔２３は、案内部１３を搬送ラインに交差する側方に貫通した横孔２４と、支持部１４を上下方向に貫通した縦孔２５（異物排除手段）が一体に形成されたものである。横孔２４は、案内部１３上を走行するチェーン１５の走行領域より下方に外れた高さ位置に開けられた貫通孔である。縦孔２５は、一対のベッド１２の間に開いた隙間１２ａから落下する物品のカス等の落下領域に対応した支持部１４に、横孔２４の下側周辺に開けられた貫通孔であり、横孔２４の周辺に隙間１２ａから落下した物品のカス等を縦孔２５から落下させて除去することができる。   The through-hole 23 is formed by integrally forming a lateral hole 24 penetrating the guide portion 13 laterally intersecting the conveyance line and a vertical hole 25 (foreign matter removing means) penetrating the support portion 14 in the vertical direction. . The lateral hole 24 is a through hole that is opened at a height position that is below the traveling region of the chain 15 that travels on the guide portion 13. The vertical hole 25 is a through-hole opened in the lower periphery of the horizontal hole 24 in the support portion 14 corresponding to a dropping region such as a residue of articles falling from the gap 12a opened between the pair of beds 12. The debris of the article dropped from the gap 12a around the horizontal hole 24 can be dropped from the vertical hole 25 and removed.

図２（ｂ）に示すように、前記横孔２４に光を通過させる光学式検出手段は、投光部及び受光部を有する反射型のセンサ２６と、反射板２７を備え、反射型のセンサ２６と反射板２７とが、ベッド１２の下方で、案内部１３を挟んで隙間１２ａの位置から外れた相反する側方の枠体２８に対向するように配設されている。図２（ａ）に示すように、押送部材１８の移動部１９が横孔２４の左右両側を通過していない状態では、反射型のセンサ２６からの光が横孔２４を通過して反射板２７で反射する。図３（ａ）（ｂ）に示すように、押送部材１８の移動部１９が横孔２４の左右両側を通過して塞ぐ状態では、横孔２４を通過する光が両脚部１９ａで遮られるため、反射型のセンサ２６からの信号に基づき不図示の制御手段によって供給原点を検出することができる。   As shown in FIG. 2B, the optical detection means that allows light to pass through the lateral hole 24 includes a reflective sensor 26 having a light projecting portion and a light receiving portion, and a reflective plate 27, and includes a reflective sensor. 26 and the reflection plate 27 are disposed below the bed 12 so as to face opposite side frames 28 that are out of the position of the gap 12a with the guide portion 13 interposed therebetween. As shown in FIG. 2A, in a state where the moving portion 19 of the pushing member 18 does not pass through the left and right sides of the horizontal hole 24, the light from the reflective sensor 26 passes through the horizontal hole 24 and passes through the reflecting plate. 27 is reflected. As shown in FIGS. 3A and 3B, in a state where the moving portion 19 of the pushing member 18 passes through both the left and right sides of the horizontal hole 24, the light passing through the horizontal hole 24 is blocked by both leg portions 19a. The supply origin can be detected by control means (not shown) based on the signal from the reflective sensor 26.

本実施形態は下記の効果を有する。
（１） ガイドレール１１の案内部１３上を走行するチェーン１５と共に押送部材１８がガイドレール１１の支持部１４により支持されて案内されながら、ガイドレール１１を走行する往路（キャリア側）で、案内部１３に形成された横孔２４に光学式検出手段（反射型のセンサ２６及び反射板２７）が光を通過させて、押送部材１８のみを検出するので、高速処理される物品供給コンベヤ６の搬送速度が例えば高速から低速に変化することによって、遠心力等が変化してもチェーン１５の弛み角度や移動経路等の状態が変化しないことから、高速処理においても供給原点の検出信頼性を損ねることがない。 This embodiment has the following effects.
(1) Guiding on the forward path (carrier side) traveling on the guide rail 11 while the pushing member 18 is supported and guided by the support portion 14 of the guide rail 11 together with the chain 15 traveling on the guide portion 13 of the guide rail 11 Since the optical detection means (reflection type sensor 26 and reflection plate 27) passes light through the horizontal hole 24 formed in the section 13 and detects only the pushing member 18, the article supply conveyor 6 to be processed at high speed is used. For example, when the conveyance speed is changed from high speed to low speed, the state of the slack angle of the chain 15 and the movement path does not change even if the centrifugal force or the like is changed. There is nothing.

（２） ベッド１２より下方で、ベッド１２に開いた隙間１２ａ（搬送部材の延出通路）から外れた側方に光学式検出手段を配設しているので、ベッド１２の隙間１２ａから自然に落下した物品７のカス等が光学式検出手段に付着するのを回避し得ることから、高速処理においても供給原点の検出信頼性を損ねることがない。   (2) Since the optical detection means is disposed below the bed 12 and laterally away from the gap 12a (extended passage of the conveying member) opened in the bed 12, the optical detection means is naturally provided from the gap 12a of the bed 12. Since it is possible to avoid the debris and the like of the dropped article 7 from adhering to the optical detection means, the detection reliability of the supply origin is not impaired even in high-speed processing.

（３） ベッド１２の隙間１２ａからガイドレール１１に自然に落下した物品７のカス等が横孔２４の周辺に溜まって検出不良が発生するのを異物排除手段により防止できるので、光学式検出手段による光が横孔２４を確実に通過して、供給原点の検出信頼性を損ねることがない。なお、異物排除手段を、ガイドレール１１の横孔２４に対応させて、ガイドレール１１の支持部１４を上下方向に貫通した縦孔２５で構成したので、例えば、エアーで物品のカス等を除去するような装置等で構成するより構成が簡素になる。   (3) Since the foreign matter removing means can prevent the detection defect from occurring due to the debris of the article 7 that naturally falls on the guide rail 11 from the gap 12a of the bed 12 around the lateral hole 24, the optical detecting means Thus, the light reliably passes through the lateral hole 24 and does not impair the detection reliability of the supply origin. In addition, since the foreign matter removing means is configured by the vertical hole 25 penetrating the support portion 14 of the guide rail 11 in the vertical direction so as to correspond to the horizontal hole 24 of the guide rail 11, for example, the residue of the article is removed by air. The configuration is simpler than the configuration of the device or the like.

（４） 横孔２４をガイドレール１１の搬送始端側近傍に形成することにより、例えば作業者が手作業でベッド１２に物品７を供する場合等における供給領域外である位置に対応して、横孔２４が形成されるので、物品供給時に自然に落下した物品のカス等が、ガイドレール１１の搬送始端１１ａ側近傍に溜まることがない。従って、供給原点の検出信頼性を損ねることがない。   (4) By forming the horizontal hole 24 in the vicinity of the conveyance start end side of the guide rail 11, the horizontal hole 24 corresponds to the position outside the supply area when the operator manually supplies the article 7 to the bed 12. Since the hole 24 is formed, the debris and the like of the articles that have dropped naturally during the supply of the articles do not accumulate in the vicinity of the conveyance start end 11a side of the guide rail 11. Accordingly, the supply origin detection reliability is not impaired.

（５） 光学式検出手段が案内部１３を挟む両側の一方に配設された反射板２７と、その他方に配設された投光部及び受光部を有する反射型のセンサ２６とをベッド１２より下方に備えることから、反射板２７側には電源等の配線が不要であるため、配線取り回しを簡素にすることができる。例えば、光学式検出手段を配設する場所が開閉式のカバー等、可動する部材であっても、反射板２７には配線がないため、断線等を回避することができる。   (5) The bed 12 includes a reflection plate 27 disposed on one side of the guide unit 13 with the optical detection means, and a reflective sensor 26 having a light projecting unit and a light receiving unit disposed on the other side. Since it is provided at a lower position, no wiring such as a power source is required on the reflecting plate 27 side, so that the wiring can be simplified. For example, even if the place where the optical detection means is disposed is a movable member such as an openable / closable cover, the reflecting plate 27 has no wiring, so that disconnection or the like can be avoided.

（６） 押送部材１８の脚部１９ａがガイドレール１１の横孔２４を塞いで反射型のセンサ２６の光の通過を遮ることにより供給原点を検出し得るので、供給コンベヤの搬送部材を原点センサで検出して供給原点を検出する従来技術と比較して、物品７のサイズの変更に伴い押送部材１８の位置を変更したり、チェーン１５の全体を脱着したりした後においても、所定位置の横孔２４を脚部１９ａが塞ぐ動作の検出に基づき供給原点を容易に定めることができる。   (6) Since the leg 19a of the pushing member 18 blocks the lateral hole 24 of the guide rail 11 and blocks the passage of light from the reflective sensor 26, the feeding origin can be detected. Compared with the prior art that detects the supply origin by detecting the position of the feed member 18, the position of the feeding member 18 is changed along with the change of the size of the article 7, or even after the entire chain 15 is removed. The supply origin can be easily determined based on the detection of the movement of the leg 19a closing the horizontal hole 24.

前記実施形態以外にも例えば下記のように構成してもよい。
・ 反射型のセンサに代えて、透過型の光電センサを用いて横孔２４に光を通過させて、供給原点を検出してもよい。 For example, the following embodiment may be configured as follows.
In place of the reflective sensor, a light source may be detected by passing light through the horizontal hole 24 using a transmissive photoelectric sensor.

・ 本実施形態では、搬送部材として、走行不能なベッドに載置された物品７を押して搬送する押送部材１８を採用したが、搬送部材が物品を載置または支持しながら走行するものを採用してもよい。   In the present embodiment, the feeding member 18 that pushes and conveys the article 7 placed on the bed that cannot travel is adopted as the carrying member, but the carrying member that runs while placing or supporting the article is adopted. May be.

・ 光学式検出手段の光を横孔２４に確実に通過させる異物排除手段として、縦孔２５に代えて、切欠部を設けたり、横孔２４の周辺に常時或いは間欠的にエアーを吹き付けて振動を与える等して、横孔２４の周辺に物品のカス等が溜らないようにしてもよい。   ・ As a foreign matter exclusion means for reliably passing the light of the optical detection means through the horizontal hole 24, instead of the vertical hole 25, a notch is provided, or air is constantly or intermittently blown around the horizontal hole 24 to vibrate. For example, the waste of the article may not be accumulated around the lateral hole 24.

・ 無端索体としては、チェーンに代えてベルトでもよい。   ・ As an endless cord, a belt may be used instead of a chain.

６…供給コンベヤ、７…物品、１０…搬送路、１１…ガイドレール、１２…ベッド、１２ａ…隙間（延出通路）、１３…案内部、１４…支持部、１５…チェーン（無端索体）、１８…押送部材（搬送部材）、１９…移動部、２０…物品搬送部、２４…横孔、２５…縦孔（異物排除手段）、２６…センサ（光学式検出手段）、２７…反射板（光学式検出手段）。   6 ... Supply conveyor, 7 ... Article, 10 ... Conveying path, 11 ... Guide rail, 12 ... Bed, 12a ... Gap (extension passage), 13 ... Guide part, 14 ... Support part, 15 ... Chain (endless cord) , 18 ... pushing member (conveying member), 19 ... moving part, 20 ... article conveying part, 24 ... horizontal hole, 25 ... vertical hole (foreign matter removing means), 26 ... sensor (optical detection means), 27 ... reflecting plate (Optical detection means).

Claims (5)

搬送ラインに沿って配設されたガイドレールの案内部上を走行する無端索体と、該無端索体に所定間隔毎に配設された搬送部材を備え、該搬送部材の間に物品を支持して搬送する横形製袋充填機における供給コンベヤであって、
前記ガイドレールには、前記案内部の下側を支持すると共に前記搬送部材の下側を支持して案内する支持部が配設されており、
前記案内部には、前記無端索体の走行領域外で、且つ、前記搬送部材が通過する領域で、搬送ラインに交差する側方に貫通した横孔が形成されており、
該横孔に光を通過させる光学式検出手段を、前記搬送部材の延出通路から側方に外れたベッドより下方に配設して、該光学式検出手段により前記搬送部材を検出することを特徴とする横形製袋充填機における供給コンベヤの供給原点検出装置。 An endless cord traveling on a guide portion of a guide rail disposed along a transport line, and a transport member disposed at predetermined intervals on the endless cord, and supporting an article between the transport members Supply conveyor in a horizontal bag making and filling machine,
The guide rail is provided with a support portion for supporting and guiding the lower side of the guide portion and supporting the lower side of the conveying member,
The guide part is formed with a lateral hole penetrating to the side intersecting the conveyance line outside the traveling region of the endless cord and in the region through which the conveyance member passes.
An optical detection means for allowing light to pass through the lateral hole is disposed below the bed that is laterally removed from the extending passage of the conveying member, and the conveying member is detected by the optical detecting means. A supply origin detection device for a supply conveyor in a horizontal bag making and filling machine. 前記延出通路から前記横孔の周辺に向けて落下した物品のカス等による光の通過有無の誤検出を防止する異物排除手段を有することを特徴とする請求項１に記載の横形製袋充填機における供給コンベヤの供給原点検出装置。 The horizontal bag making and filling according to claim 1, further comprising a foreign matter removing means for preventing erroneous detection of light passing or not due to debris or the like of an article dropped from the extending passage toward the periphery of the horizontal hole. Supply origin detection device of the supply conveyor in the machine. 前記異物排除手段は、前記支持部を上下方向に貫通した縦孔または切欠部であることを特徴とする請求項２に記載の横形製袋充填機における供給コンベヤの供給原点検出装置。 3. The supply origin detecting device for a supply conveyor in a horizontal bag making and filling machine according to claim 2, wherein the foreign matter removing means is a vertical hole or a cutout portion penetrating the support portion in the vertical direction. 前記横孔は、前記ガイドレールの搬送始端側近傍に形成されていることを特徴とする請求項１〜３のうちいずれか一つに記載の横形製袋充填機における供給コンベヤの供給原点検出装置。 The supply origin detection device for a supply conveyor in a horizontal bag making and filling machine according to any one of claims 1 to 3, wherein the horizontal hole is formed in the vicinity of a conveyance start end side of the guide rail. . 前記光学式検出手段は、前記案内部を挟む両側の一方に配設された反射板と、その他方に配設された反射型のセンサを備えることを特徴とする請求項１〜４のうちいずれか一つに記載の横形製袋充填機における供給コンベヤの供給原点検出装置。 The optical detection means includes a reflecting plate disposed on one of both sides of the guide portion and a reflective sensor disposed on the other side. A supply origin detection device for a supply conveyor in the horizontal bag making and filling machine according to claim 1.
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