JP5284175B2 - Bag feeder - Google Patents

Bag feeder Download PDF

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JP5284175B2
JP5284175B2 JP2009113627A JP2009113627A JP5284175B2 JP 5284175 B2 JP5284175 B2 JP 5284175B2 JP 2009113627 A JP2009113627 A JP 2009113627A JP 2009113627 A JP2009113627 A JP 2009113627A JP 5284175 B2 JP5284175 B2 JP 5284175B2
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bag
standby position
stopper
floor surface
delivery
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JP2010260618A (en
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眞 土井
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Nisshin Seifun Group Inc
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Description

この発明は、給袋機に係り、特に、包装用の袋を一枚ずつ包装機へ受け渡す給袋機に関する。   The present invention relates to a bag feeder, and in particular, to a bag feeder that delivers packaging bags one by one to the packaging machine.

従来から、包装用の袋を包装機へ供給する手段として、例えば特許文献１に開示されたような給袋機が用いられている。
この給袋機は、投入位置から受け渡し位置まで水平方向に延びる搬送路を有すると共に、この搬送路に沿って投入位置から受け渡し位置の手前の払い出し位置まで搬送路の下部に延在する下部送り装置と、払い出し位置における搬送路の上部に配置された上部送り装置とを備えている。下部送り装置と上部送り装置は、それぞれ周回状に移動するベルトを有し、このベルトを袋の下面または上面に当接させて摩擦力により袋の搬送を行う。投入位置に投入された複数の袋は、互いに重なった状態で下部送り装置により払い出し位置まで搬送され、ここで最上層の袋および引き続く数枚の袋が上部送り装置によりさらに受け渡し位置へと払い出される。 Conventionally, as a means for supplying a packaging bag to a packaging machine, for example, a bag feeder disclosed in Patent Document 1 has been used.
The bag feeder has a conveyance path extending in the horizontal direction from the loading position to the delivery position, and extends along the conveyance path from the loading position to the payout position before the delivery position to the lower part of the conveyance path. And an upper feeding device arranged at the upper part of the conveying path at the payout position. The lower feeding device and the upper feeding device each have a belt that moves in a circular fashion, and the belt is brought into contact with the lower surface or the upper surface of the bag to carry the bag by frictional force. The plurality of bags thrown into the loading position are transported to the dispensing position by the lower feeding device in a state of being overlapped with each other, where the uppermost bag and several subsequent bags are further dispensed to the delivery position by the upper feeding device. .

受け渡し位置にはセンサが配置されており、袋が受け渡し位置に払い出されたことがセンサにより検知されると、受け渡し装置によって袋が保持されて包装機へ受け渡され、包装機において、袋表面への印字、袋内部への被包装物の充填、袋内部のガス置換、袋開口部のシール等の各工程が連続して施される。   A sensor is arranged at the delivery position, and when the sensor detects that the bag has been delivered to the delivery position, the bag is held by the delivery device and delivered to the packaging machine. Steps such as printing on the bag, filling the bag into the package, replacing the gas inside the bag, and sealing the bag opening are successively performed.

特開２００３−２３０７号公報JP 2003-2307 A

特許文献１に開示された給袋機では、払い出し位置まで搬送された複数の袋のうち最上層の袋の上面に上部送り装置のベルトが当接し、このベルトを移動させることによって袋が受け渡し位置へ払い出されるが、このとき、最上層の袋とその下に位置する第２層目以降の袋との摩擦に起因して、第２層目以降の袋も最上層の袋と共に受け渡し位置へ払い出されるおそれがある。このようにして、同時に複数の袋が払い出されると、たとえ最上層の袋が正規の受け渡し位置から後方にずれていても、その下に位置する他の袋をセンサが検知することで、受け渡し位置への払い出しが完了したと見なされ、位置のずれた最上層の袋が包装機へ受け渡されて不具合を生じることがあった。   In the bag feeder disclosed in Patent Document 1, the belt of the upper feeding device comes into contact with the upper surface of the uppermost bag among the plurality of bags conveyed to the payout position, and the bag is moved to the delivery position by moving the belt. At this time, due to the friction between the uppermost bag and the second and subsequent bags located below it, the second and subsequent bags are also delivered to the delivery position together with the uppermost bag. There is a risk of being. In this way, when a plurality of bags are paid out at the same time, even if the uppermost bag is displaced rearward from the normal delivery position, the sensor detects another bag located thereunder, so that the delivery position It was considered that the delivery of the bag was completed, and the top layer bag that was misaligned was delivered to the packaging machine, causing problems.

この発明は、このような従来の問題点を解消するためになされたもので、袋を一枚ずつ確実に受け渡し位置へ供給することができる給袋機を提供することを目的とする。   The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a bag feeder that can reliably supply bags one by one to a delivery position.

この発明に係る給袋機は、待機位置に載置された袋を一枚ずつ前進させて受け渡し位置へ供給する給袋機において、少なくとも待機位置の後方から受け渡し位置まで延びる床面を有する搬送路と、待機位置の後方から搬送路に沿って袋を前進させて待機位置へ袋を補給する袋補給装置と、先端部が搬送路の床面上に突出して袋の前端部に当接することにより袋補給装置で補給された袋を待機位置に留める袋位置規制状態と先端部が搬送路の床面の下方に退避して待機位置からの袋の前進を許容する袋位置解放状態との間で移動自在に配設された待機位置用ストッパと、待機位置用ストッパの近傍で且つ搬送路の床面の下方に配置された反射型光センサと、待機位置に載置された袋の後半部を吸着保持して持ち上げ、この袋の前半部が搬送路の床面に接した状態で袋を受け渡し位置まで前進させた後、袋の吸着保持を解除して袋を受け渡し位置に供給する袋搬送装置とを備え、待機位置用ストッパは、袋位置規制状態のときに先端部に当接する袋の前端部の上方に位置し且つ下方を向いた光反射部を有し、袋位置規制状態にある待機位置用ストッパの光反射部に向けて反射型光センサから光ビームを発することにより待機位置における袋の有無を検知するものである。 The bag feeder according to the present invention is a bag feeder that advances bags one by one at a standby position one by one and supplies them to the delivery position, and has a conveyance path having a floor surface extending from at least the rear of the standby position to the delivery position And a bag replenishing device that advances the bag along the conveyance path from the rear of the standby position and replenishes the bag to the standby position, and the front end protrudes on the floor surface of the conveyance path and comes into contact with the front end of the bag Between the bag position regulation state in which the bag replenished by the bag replenishing device is held at the standby position and the bag position release state in which the tip portion is retracted below the floor surface of the conveyance path to allow the bag to advance from the standby position. A standby position stopper disposed movably, a reflective optical sensor disposed in the vicinity of the standby position stopper and below the floor surface of the conveyance path, and a rear half of the bag placed at the standby position. Pick up and hold and lift the front half of the bag After advancing the bag to a transfer position in a state in contact with the surface, by releasing the suction and holding of the bag and a bag conveying device for supplying the transfer position the bags, standby position stopper, when the bag position restricting state A light reflecting portion located above the front end portion of the bag that contacts the front end portion and facing downward, and light from the reflective optical sensor toward the light reflecting portion of the standby position stopper in the bag position regulation state. The presence or absence of a bag at the standby position is detected by emitting a beam .

この発明によれば、袋搬送装置が待機位置に載置された袋の後半部を吸着保持して持ち上げ、この袋の前半部が搬送路の床面に接した状態で袋を受け渡し位置まで前進させるので、袋を一枚ずつ確実に受け渡し位置へ供給することが可能となる。   According to the present invention, the bag transport device sucks and holds the rear half of the bag placed at the standby position and lifts it, and the bag advances to the delivery position with the front half of the bag in contact with the floor surface of the transport path. Therefore, the bags can be reliably supplied to the delivery position one by one.

この発明の実施の形態に係る給袋機を示す側面図である。It is a side view showing the bag feeder concerning an embodiment of this invention. 実施の形態における待機位置用ストッパの取り付け状態を示す部分正面断面図である。It is a fragmentary front sectional view which shows the attachment state of the stopper for standby positions in embodiment. 実施の形態に用いられた待機位置用ストッパと反射型光センサの関係を示す部分側面断面図である。It is a fragmentary sectional side view which shows the relationship between the stopper for standby positions used in embodiment, and a reflection type optical sensor. 待機位置に載置された袋の後半部を持ち上げた状態を示す側面図である。It is a side view which shows the state which lifted the second half part of the bag mounted in the standby position. 袋の後半部を持ち上げたまま受け渡し位置まで前進させた状態を示す側面図である。It is a side view which shows the state advanced to the delivery position, raising the back half part of a bag. 後続の袋が待機位置に載置された状態を示す側面図である。It is a side view which shows the state in which the subsequent bag was mounted in the standby position. 先行する袋を受け渡し位置に供給した状態を示す側面図である。It is a side view which shows the state which supplied the front bag to the delivery position.

以下、図面に示す好適な実施の形態に基づいて、この発明を詳細に説明する。
図１に、この発明の実施の形態に係る給袋機の構成を示す。給袋機は、架台１により水平に支持された直線状の樋部材２を備えている。樋部材２は、この発明の搬送路を形成するもので、供給しようとする袋の幅に対応した幅の平面状の床面３と、床面３の両側縁にそれぞれ立設された一対の側壁４を有している。 Hereinafter, the present invention will be described in detail based on a preferred embodiment shown in the drawings.
In FIG. 1, the structure of the bag feeder which concerns on embodiment of this invention is shown. The bag feeder includes a linear scissor member 2 that is horizontally supported by a gantry 1. The eaves member 2 forms the conveyance path of the present invention, and a pair of flat floor surface 3 having a width corresponding to the width of the bag to be supplied and a pair of erected on both side edges of the floor surface 3. It has a side wall 4.

樋部材２の上方には、樋部材２と平行に延びる支持部材５が支柱６によって支持されると共に、同様に樋部材２と平行に延びる案内部材７が支持部材５の上に固定されている。案内部材７には、この案内部材７に沿って移動自在に枠体８が取り付けられており、枠体８の下部に吸盤用シリンダ９が固定されている。吸盤用シリンダ９は、鉛直方向に移動するプランジャ１０を有しており、このプランジャ１０の先端に吸盤取付板１１を介して複数の袋保持用吸盤１２が取り付けられている。また、支持部材５には、枠体８を案内部材７に沿って移動するための枠体用電動アクチュエータ１３が固定されており、案内部材７、枠体８、吸盤用シリンダ９、吸盤取付板１１および枠体用電動アクチュエータ１３により、袋保持用吸盤１２を搬送路に対して上下動させると共に搬送路に沿って前後進させるための吸盤移動装置が構成されている。さらに、各袋保持用吸盤１２には、電磁バルブ１４を介して真空装置１５が接続されている。なお、精度、速度に応じて、電動アクチュエータ１３の代わりにエアシリンダ等を使用することもできる。   A support member 5 extending parallel to the flange member 2 is supported by the support 6 above the flange member 2, and a guide member 7 extending parallel to the flange member 2 is also fixed on the support member 5. . A frame body 8 is attached to the guide member 7 so as to be movable along the guide member 7, and a suction cup cylinder 9 is fixed to the lower portion of the frame body 8. The suction cup cylinder 9 has a plunger 10 that moves in the vertical direction, and a plurality of bag holding suction cups 12 are attached to the tip of the plunger 10 via suction cup mounting plates 11. Further, a frame body electric actuator 13 for moving the frame body 8 along the guide member 7 is fixed to the support member 5, and the guide member 7, the frame body 8, the suction cup cylinder 9, and the suction cup mounting plate. 11 and the frame body electric actuator 13 constitute a suction cup moving device for moving the bag holding suction cup 12 up and down with respect to the conveyance path and moving it back and forth along the conveyance path. Furthermore, a vacuum device 15 is connected to each bag holding suction cup 12 via an electromagnetic valve 14. Note that an air cylinder or the like can be used instead of the electric actuator 13 according to the accuracy and speed.

搬送路を形成する樋部材２の先端には、床面３の上に受け渡し位置用ストッパ１６が固定されると共に、床面３の下方に反射型光センサ１７が配置されている。受け渡し位置用ストッパ１６に下方を向いた光反射部が形成されており、反射型光センサ１７は、床面３に形成された開口部を介して光反射部に向けて光ビームを発するように構成されている。床面３上を搬送されてきた袋Ｐ１の前端部が受け渡し位置用ストッパ１６に当接することにより、これ以上の袋Ｐ１の前進が禁止される。このとき、反射型光センサ１７から発せられた光ビームは、受け渡し位置用ストッパ１６に当接する袋Ｐ１の前端部により遮断され、受け渡し位置用ストッパ１６の光反射部にまで到達しない。このため、光反射部からの反射光を反射型光センサ１７で捉えることにより、受け渡し位置用ストッパ１６に当接する袋Ｐ１の有無を検知することができる。このように、袋Ｐ１の前端部が受け渡し位置用ストッパ１６に当接する位置を「受け渡し位置」と呼ぶことにする。   A transfer position stopper 16 is fixed on the floor surface 3 and a reflection type optical sensor 17 is disposed below the floor surface 3 at the tip of the eaves member 2 forming the conveyance path. A light reflecting portion facing downward is formed on the delivery position stopper 16, and the reflective optical sensor 17 emits a light beam toward the light reflecting portion through an opening formed on the floor surface 3. It is configured. When the front end portion of the bag P1 that has been transported on the floor surface 3 comes into contact with the delivery position stopper 16, further advancement of the bag P1 is prohibited. At this time, the light beam emitted from the reflection type optical sensor 17 is blocked by the front end portion of the bag P <b> 1 in contact with the delivery position stopper 16, and does not reach the light reflection portion of the delivery position stopper 16. For this reason, the presence or absence of the bag P <b> 1 in contact with the delivery position stopper 16 can be detected by capturing the reflected light from the light reflecting portion with the reflective optical sensor 17. The position where the front end of the bag P1 contacts the transfer position stopper 16 is referred to as a “transfer position”.

また、受け渡し位置用ストッパ１６の近傍には、床面３の下方に吸盤用シリンダ１８が配置され、吸盤用シリンダ１８のプランジャの先端に袋固定用吸盤１９が取り付けられている。この袋固定用吸盤１９には、電磁バルブ２０を介して真空装置１５が接続されている。   A suction cup cylinder 18 is disposed below the floor surface 3 in the vicinity of the delivery position stopper 16, and a bag fixing suction cup 19 is attached to the tip of the plunger of the suction cup cylinder 18. A vacuum device 15 is connected to the bag fixing sucker 19 via an electromagnetic valve 20.

樋部材２の先端から所定距離だけ手前の床面３には開口部が形成され、この開口部の直下にロータリーアクチュエータ２１により回動自在に取り付けられた待機位置用ストッパ２２が配置されている。この待機位置用ストッパ２２の近傍には、待機位置用ストッパ２２に当接する袋の有無を検知するための反射型光センサ２３が配置されている。   An opening is formed in the floor surface 3 just a predetermined distance from the front end of the flange member 2, and a standby position stopper 22 that is rotatably attached by a rotary actuator 21 is disposed immediately below the opening. In the vicinity of the standby position stopper 22, a reflection type optical sensor 23 for detecting the presence or absence of a bag in contact with the standby position stopper 22 is disposed.

さらに、樋部材２の基端側の床面３の下には、搬送路上に互いに重なった状態で載置された袋を樋部材２の先端側へと搬送する下部送り装置２４が樋部材２の長さ方向に沿って延在している。下部送り装置２４に対応して樋部材２の床面３に樋部材２の長さ方向に延びる開口部が形成されており、下部送り装置２４に具備された周回状に移動するベルト２５が床面３の開口部を介して袋の下面に当接することで、摩擦力により袋の搬送が行われる。
また、支持部材５に吊り下げ部材２６を介して吊設された上部送り装置２７が下部送り装置２４の直上に配置されている。上部送り装置２７は、下部送り装置２４のベルト２５よりもわずかに高速で周回状に移動するベルト２８を有し、下部送り装置２４により互いに重なった状態で搬送されてきた袋のうち、最上層の袋の上面にベルト２８が当接して、この最上層の袋および引き続く数枚の袋を樋部材２の先端側へと払い出す。
これら下部送り装置２４および上部送り装置２７によりこの発明の袋補給装置が形成されている。 Further, below the floor 3 on the proximal end side of the heel member 2, a lower feeding device 24 that conveys the bags placed on the conveyance path so as to overlap each other to the distal end side of the heel member 2 is the heel member 2. It extends along the length direction. Corresponding to the lower feeding device 24, an opening extending in the length direction of the eaves member 2 is formed in the floor surface 3 of the eaves member 2, and a belt 25 provided in the lower feeding device 24 that moves in a circular manner is provided on the floor. By contacting the lower surface of the bag via the opening of the surface 3, the bag is conveyed by frictional force.
Further, an upper feed device 27 suspended from the support member 5 via a suspension member 26 is disposed immediately above the lower feed device 24. The upper feeding device 27 has a belt 28 that moves in a circular manner at a slightly higher speed than the belt 25 of the lower feeding device 24, and is the uppermost layer among the bags conveyed in a state of being overlapped with each other by the lower feeding device 24. The belt 28 comes into contact with the upper surface of the bag, and the uppermost bag and several subsequent bags are discharged to the tip side of the bag member 2.
The lower feeding device 24 and the upper feeding device 27 form the bag supply device of the present invention.

さらに、給袋機は、給袋機全体の動作を司る制御装置２９を備えている。制御装置２９には、吸盤用シリンダ９および１８、枠体用シリンダ１３、電磁バルブ１４および２０、反射型光センサ１７および２３、ロータリーアクチュエータ２１、下部送り装置２４および上部送り装置２７がそれぞれ接続されている。   Furthermore, the bag feeder includes a control device 29 that controls the operation of the entire bag feeder. Suction cup cylinders 9 and 18, frame cylinder 13, electromagnetic valves 14 and 20, reflection type optical sensors 17 and 23, rotary actuator 21, lower feed device 24 and upper feed device 27 are connected to control device 29. ing.

待機位置用ストッパ２２の取り付け状態を図２に示す。樋部材２の双方の側壁４にそれぞれ側壁４と平行にストッパ取付板３１が固定され、これらのストッパ取付板３１の互いに対向する内側の面にそれぞれ待機位置用ストッパ２２が取り付けられている。これらの待機位置用ストッパ２２は、それぞれ対応するストッパ取付板３１の外側の面に固定されたロータリーアクチュエータ２１によって側壁４と平行な面内で互いに同期して回動するように構成されている。樋部材２の床面３には、双方の待機位置用ストッパ２２に対応する箇所にそれぞれ開口部３２が形成され、各待機位置用ストッパ２２は、その回動位置に応じて、対応する開口部３２を通って一部が床面３の上に突出する、あるいは、待機位置用ストッパ２２の全体が床面３の下に位置する。各待機位置用ストッパ２２が取り付けられたストッパ取付板３１の内側の面に反射型光センサ２３が固定されている。   FIG. 2 shows how the standby position stopper 22 is attached. Stopper mounting plates 31 are fixed to both side walls 4 of the flange member 2 in parallel with the side walls 4, and standby position stoppers 22 are respectively mounted on mutually opposing inner surfaces of the stopper mounting plates 31. These standby position stoppers 22 are configured to rotate in synchronization with each other in a plane parallel to the side wall 4 by a rotary actuator 21 fixed to the outer surface of the corresponding stopper mounting plate 31. Openings 32 are formed in the floor surface 3 of the eaves member 2 at locations corresponding to both standby position stoppers 22, and the standby position stoppers 22 correspond to the corresponding opening positions. A part protrudes above the floor surface 3 through 32, or the entire standby position stopper 22 is positioned below the floor surface 3. A reflective optical sensor 23 is fixed to the inner surface of the stopper mounting plate 31 to which each standby position stopper 22 is mounted.

図３に示されるように、待機位置用ストッパ２２は、回動軸３３から径方向に延びる腕部３４と、腕部３４の先端から周方向に屈曲して形成された爪部３５とを有している。さらに、爪部３５は、待機位置用ストッパ２２の回動方向に沿ってなだらかに湾曲する外周面３６と、平面状の内周面３７とを有し、この爪部３５の内周面３７に光反射部３８が形成されている。   As shown in FIG. 3, the standby position stopper 22 has an arm portion 34 that extends in the radial direction from the rotation shaft 33, and a claw portion 35 that is bent in the circumferential direction from the tip of the arm portion 34. doing. Further, the claw portion 35 has an outer peripheral surface 36 that gently curves along the rotation direction of the standby position stopper 22, and a planar inner peripheral surface 37. A light reflecting portion 38 is formed.

待機位置用ストッパ２２は、図３に実線で示されるように、腕部３４の先端と爪部３５とが樋部材２の床面３に形成された開口部３２を介して床面３の上に突出した袋位置規制状態Ａと、破線で示されるように、爪部３５等を含む全体が床面３の下に退避した袋位置解放状態Ｂとの間で回動される。反射型光センサ２３は、袋位置規制状態Ａにある待機位置用ストッパ２２の光反射部３８に向けて光ビームＬを発するような位置および向きに固定されている。また、待機位置用ストッパ２２が袋位置規制状態Ａにあるときには、床面３上を搬送されてきた袋Ｐ１の前端部が待機位置用ストッパ２２の腕部３４の先端に当接することにより、さらなる袋Ｐ１の前進が禁止される。このとき、反射型光センサ２３から発せられた光ビームＬは、待機位置用ストッパ２２の腕部３４の先端に当接する袋Ｐ１の前端部により遮断され、光反射部３８にまで到達しない。このように、袋Ｐ１の前端部が待機位置用ストッパ２２に当接する位置を「待機位置」と呼ぶことにする。   As shown by a solid line in FIG. 3, the standby position stopper 22 is formed on the floor surface 3 through an opening 32 in which the tip of the arm portion 34 and the claw portion 35 are formed in the floor surface 3 of the saddle member 2. The bag position regulation state A protruding to the center and the bag position release state B that is entirely retracted below the floor surface 3 as shown by the broken line are rotated. The reflection type optical sensor 23 is fixed at a position and an orientation that emits the light beam L toward the light reflecting portion 38 of the standby position stopper 22 in the bag position regulation state A. Further, when the standby position stopper 22 is in the bag position regulation state A, the front end portion of the bag P1 conveyed on the floor surface 3 comes into contact with the distal end of the arm portion 34 of the standby position stopper 22, thereby further Advancement of the bag P1 is prohibited. At this time, the light beam L emitted from the reflection-type optical sensor 23 is blocked by the front end portion of the bag P <b> 1 that contacts the tip of the arm portion 34 of the standby position stopper 22, and does not reach the light reflection portion 38. Thus, the position where the front end of the bag P1 contacts the standby position stopper 22 is referred to as a “standby position”.

さらに、待機位置用ストッパ２２が袋位置解放状態Ｂにあるときには、反射型光センサ２３から発せられた光ビームＬが光反射部３８に到達することはない。このため、光反射部３８からの反射光を反射型光センサ２３で捉えることにより、待機位置用ストッパ２２が袋位置規制状態Ａにあるときの待機位置に位置する袋Ｐ１の有無を検知することができる。   Further, when the standby position stopper 22 is in the bag position release state B, the light beam L emitted from the reflective optical sensor 23 does not reach the light reflecting portion 38. For this reason, the presence or absence of the bag P1 located at the standby position when the standby position stopper 22 is in the bag position restriction state A is detected by capturing the reflected light from the light reflecting portion 38 with the reflection type optical sensor 23. Can do.

次に、この実施の形態に係る給袋機の動作について説明する。
まず、制御装置２９は、吸盤用シリンダ９を駆動して袋保持用吸盤１２を樋部材２の床面３の上方に位置させると共にロータリーアクチュエータ２１を駆動して待機位置用ストッパ２２を袋位置規制状態Ａとし、さらに下部送り装置２４を駆動する。この状態で、搬送路の基端側、すなわち図１における樋部材２の左端に複数の袋が互いに重なった状態で投入されると、これらの袋は、互いに重なったまま下部送り装置２４のベルト２５と上部送り装置２７のベルト２８に当接する。ここで、下部送り装置２４と上部送り装置２７を駆動させると、ベルト２５とベルト２８により最上層の袋Ｐ１および引き続く数枚の袋が前方へ払い出される。 Next, the operation of the bag feeder according to this embodiment will be described.
First, the control device 29 drives the suction cup cylinder 9 to position the bag holding suction cup 12 above the floor surface 3 of the saddle member 2 and drives the rotary actuator 21 to restrict the standby position stopper 22 to the bag position. In state A, the lower feeding device 24 is further driven. In this state, when a plurality of bags are put on the base end side of the conveyance path, that is, the left end of the flange member 2 in FIG. 25 and the belt 28 of the upper feeder 27. Here, when the lower feeding device 24 and the upper feeding device 27 are driven, the uppermost bag P1 and several subsequent bags are discharged forward by the belt 25 and the belt 28.

このようにして払い出された袋Ｐ１および引き続く数枚の袋は、待機位置に至り、樋部材２の床面３上に突出している待機位置用ストッパ２２の腕部３４の先端に袋Ｐ１および引き続く数枚の袋の内、最も前端が前方に位置する袋の前端部が当接したところで停止する。反射型光センサ２３からの検出信号により、袋Ｐ１および引き続く数枚の袋の内、最も前端が前方に位置する袋が待機位置に存在することが検知されると、制御装置２９は、図１に示されるように、吸盤用シリンダ９を駆動することにより袋保持用吸盤１２を下降させて待機位置に位置する袋Ｐ１の上面に当接させると共に電磁バルブ１４を開いて袋保持用吸盤１２により袋Ｐ１の後半部の上面を吸引保持させる。
ここで、最上層の袋Ｐ１の前端部が、待機位置に存在する複数枚の袋の中で最も前方に位置せずに、待機位置用ストッパ２２より手前にずれていた場合でも、その位置のずれは、待機位置用ストッパ２２と上部送り装置２７の位置関係で決定される値より大きくなることは無く、袋保持用吸盤１２が下降した場合には、必ず最上層の袋Ｐ１が吸引保持される。 The bag P1 thus dispensed and several subsequent bags reach the standby position, and the bag P1 and the end of the arm portion 34 of the standby position stopper 22 protruding on the floor surface 3 of the saddle member 2 Stops when the front end portion of the bag whose front end is located in front is abutted among several successive bags. When it is detected by the detection signal from the reflection type optical sensor 23 that the bag having the frontmost front end among the bag P1 and several subsequent bags is present in the standby position, the control device 29 is configured as shown in FIG. As shown in FIG. 2, the suction cup cylinder 9 is driven to lower the suction cup 12 and bring it into contact with the upper surface of the bag P1 positioned at the standby position. The upper surface of the second half of the bag P1 is sucked and held.
Here, even when the front end portion of the uppermost bag P1 is not positioned in the foremost position among the plurality of bags existing at the standby position and is shifted forward from the standby position stopper 22, The deviation does not become larger than the value determined by the positional relationship between the standby position stopper 22 and the upper feed device 27. When the bag holding sucker 12 is lowered, the uppermost bag P1 is always sucked and held. The

次に、図４に示されるように、制御装置２９は、吸盤用シリンダ９を駆動して袋Ｐ１の後半部の上面を吸引保持している袋保持用吸盤１２を上方へ持ち上げる。さらに、図５に示されるように、ロータリーアクチュエータ２１を駆動して待機位置用ストッパ２２を袋位置解放状態Ｂとした後、枠体用電動アクチュエータ１３を駆動して枠体８を案内部材７に沿って移動させることにより、袋保持用吸盤１２で吸引保持された袋Ｐ１の前半部が樋部材２の床面３に接した状態で袋Ｐ１を前進させる。反射型光センサ１７からの検出信号により袋Ｐ１の前端部が受け渡し位置用ストッパ１６に当接したことが検知されると、制御装置２９は、枠体用電動アクチュエータ１３の駆動を停止する。さらに、制御装置２９は、吸盤用シリンダ１８を駆動することにより袋固定用吸盤１９を上昇させて袋Ｐ１の下面に当接させると共に電磁バルブ２０を開いて袋固定用吸盤１９により袋Ｐ１の前端部の下面を吸引保持させる。   Next, as shown in FIG. 4, the control device 29 drives the sucker cylinder 9 to lift the bag holding sucker 12 holding the upper surface of the rear half of the bag P <b> 1 upward. Further, as shown in FIG. 5, after the rotary actuator 21 is driven to bring the standby position stopper 22 into the bag position released state B, the frame body electric actuator 13 is driven to move the frame body 8 to the guide member 7. By moving along, the bag P1 is advanced in a state where the front half of the bag P1 sucked and held by the bag holding sucker 12 is in contact with the floor surface 3 of the bag member 2. When the detection signal from the reflection type optical sensor 17 detects that the front end of the bag P1 is in contact with the delivery position stopper 16, the control device 29 stops driving the frame body electric actuator 13. Further, the control device 29 drives the sucker cylinder 18 to raise the bag fixing sucker 19 to contact the lower surface of the bag P1, and opens the electromagnetic valve 20 to open the front end of the bag P1 by the bag fixing sucker 19. The lower surface of the part is sucked and held.

このように、電動アクチュエータ１３による袋Ｐ１の前進は、反射型光センサ１７による袋Ｐ１の検知をもって停止されるため、袋Ｐ１は、待機位置において、引き続く数枚の袋に対し最も前方に位置していなくてもさしつかえない。
次に、制御装置２９は、電磁バルブ１４を閉じて袋保持用吸盤１２による袋Ｐ１の後半部の吸引保持を解除し、さらに、枠体用電動アクチュエータ１３を駆動して枠体８を案内部材７に沿って移動させることにより、袋保持用吸盤１２を待機位置に位置する袋Ｐ２の後半部の上方にまで後退させる。また、制御装置２９は、袋保持用吸盤１２による袋Ｐ１の後半部の吸引保持を解除した後、電磁バルブ２０を閉じて袋固定用吸盤１９による吸引を停止し、吸盤用シリンダ１８を駆動して袋固定用吸盤１９を下降させる。 Thus, since the advance of the bag P1 by the electric actuator 13 is stopped upon detection of the bag P1 by the reflective optical sensor 17, the bag P1 is positioned at the foremost position with respect to several subsequent bags at the standby position. It doesn't matter if you don't.
Next, the control device 29 closes the electromagnetic valve 14 to release the suction holding of the second half of the bag P1 by the bag holding suction cup 12, and further drives the frame body electric actuator 13 to guide the frame body 8 to the guide member. 7, the bag holding suction cup 12 is retracted to the upper part of the second half of the bag P <b> 2 located at the standby position. Further, the control device 29 releases the suction holding of the second half portion of the bag P1 by the bag holding sucker 12, then closes the electromagnetic valve 20, stops the suction by the bag fixing sucker 19, and drives the sucker cylinder 18. The bag fixing sucker 19 is lowered.

一方、反射型光センサ１７からの検出信号により袋Ｐ１の前端部が受け渡し位置用ストッパ１６に当接したことが検知されると、図６に示されるように、制御装置２９は、ロータリーアクチュエータ２１を駆動して待機位置用ストッパ２２を袋位置規制状態Ａとした後、再度、下部送り装置２４と上部送り装置２７を駆動させることにより、次の袋Ｐ２及び引き続く数枚の袋を前方へと払い出す。ここで、先行する袋Ｐ１が、受け渡し位置で後段の受け取り装置（図示せず）に受け渡されておらず、図７に示されるように、袋Ｐ１の一部が待機位置用ストッパ２２の上方に位置していても、待機位置用ストッパ２２は床面の下方より上昇し、爪部３５の内周面３７に光反射部３８を有するため、問題は無い。   On the other hand, when it is detected by the detection signal from the reflection type optical sensor 17 that the front end portion of the bag P1 is in contact with the delivery position stopper 16, as shown in FIG. , The standby position stopper 22 is brought into the bag position restriction state A, and then the lower feeding device 24 and the upper feeding device 27 are driven again to move the next bag P2 and several subsequent bags forward. Pay out. Here, the preceding bag P1 is not delivered to the subsequent receiving device (not shown) at the delivery position, and a part of the bag P1 is located above the standby position stopper 22 as shown in FIG. The standby position stopper 22 rises from below the floor surface and has the light reflecting portion 38 on the inner peripheral surface 37 of the claw portion 35, so that there is no problem.

次に、反射型光センサ２３からの検出信号により袋Ｐ２又は引き続く数枚の袋のいずれかが待機位置に存在することが検知され、かつ袋Ｐ１が受け取り装置に受け渡されると、同様にして、制御装置２９は、吸盤用シリンダ９を駆動することにより袋保持用吸盤１２を下降させて待機位置に位置する袋Ｐ２の上面に当接させると共に電磁バルブ１４を開いて袋保持用吸盤１２により袋Ｐ２の後半部の上面を吸引保持させ、袋Ｐ２の受け渡し位置への供給を開始する。   Next, when it is detected from the detection signal from the reflection type optical sensor 23 that either the bag P2 or several subsequent bags are present at the standby position, and the bag P1 is delivered to the receiving device, the same manner is performed. The controller 29 drives the sucker cylinder 9 to lower the bag holding sucker 12 so as to contact the upper surface of the bag P2 positioned at the standby position, and opens the electromagnetic valve 14 to open the bag holding sucker 12. The upper surface of the rear half of the bag P2 is sucked and held, and supply of the bag P2 to the delivery position is started.

このようにして、複数の袋を一枚ずつ確実に受け渡し位置へ供給し、順次、包装機へ受け渡すことができる。
このため、包装機において、不具合を生じることなく、すなわち、歩留まりよく、袋表面への印字、袋内部への被包装物の充填、袋内部のガス置換、袋開口部のシール等の各工程を連続して施すことが可能となる。 In this way, a plurality of bags can be reliably supplied one by one to the delivery position and sequentially delivered to the packaging machine.
For this reason, in the packaging machine, without causing problems, that is, with good yield, each process such as printing on the bag surface, filling of the bag to be packaged, gas replacement inside the bag, sealing of the bag opening, etc. It can be applied continuously.

１ 架台、２ 樋部材、３ 床面、４ 側壁、５ 支持部材、６ 支柱、７ 案内部材、８ 枠体、９，１８ 吸盤用シリンダ、１０ プランジャ、１１ 吸盤取付板、１２ 袋保持用吸盤、１３ 枠体用シリンダ、１４，２０ 電磁バルブ、１５ 真空装置、１６ 受け渡し位置用ストッパ、１７，２３ 反射型光センサ、１９ 袋固定用吸盤、２１ ロータリーアクチュエータ、２２ 待機位置用ストッパ、２４ 下部送り装置、２５，２８ ベルト、２６ 吊り下げ部材、２７ 上部送り装置、２９ 制御装置、３１ ストッパ取付板、３２ 開口部、３３ 回動軸、３４ 腕部、３５ 爪部、３６ 外周面、３７ 内周面、３８ 光反射部、Ｐ１，Ｐ２ 袋、Ａ 袋位置規制状態、Ｂ 袋位置解放状態、Ｌ 光ビーム。   DESCRIPTION OF SYMBOLS 1 mount, 2 eaves member, 3 floor surface, 4 side wall, 5 support member, 6 support | pillar, 7 guide member, 8 frame, 9,18 sucker cylinder, 10 plunger, 11 sucker mounting plate, 12 sucker for holding bag, 13 Frame cylinder, 14, 20 Solenoid valve, 15 Vacuum device, 16 Delivery position stopper, 17, 23 Reflection type optical sensor, 19 Bag fixing sucker, 21 Rotary actuator, 22 Standby position stopper, 24 Lower feed device 25, 28 Belt, 26 Hanging member, 27 Upper feed device, 29 Control device, 31 Stopper mounting plate, 32 Opening portion, 33 Rotating shaft, 34 Arm portion, 35 Claw portion, 36 Outer peripheral surface, 37 Inner peripheral surface , 38 light reflecting portion, P1, P2 bag, A bag position restricted state, B bag position released state, L light beam.

Claims (1)

待機位置に載置された袋を一枚ずつ前進させて受け渡し位置へ供給する給袋機において、
少なくとも前記待機位置の後方から前記受け渡し位置まで延びる床面を有する搬送路と、
前記待機位置の後方から前記搬送路に沿って袋を前進させて前記待機位置へ袋を補給する袋補給装置と、
先端部が前記搬送路の床面上に突出して袋の前端部に当接することにより前記袋補給装置で補給された袋を前記待機位置に留める袋位置規制状態と前記先端部が前記搬送路の床面の下方に退避して前記待機位置からの袋の前進を許容する袋位置解放状態との間で移動自在に配設された待機位置用ストッパと、
前記待機位置用ストッパの近傍で且つ前記搬送路の床面の下方に配置された反射型光センサと、
前記待機位置に載置された袋の後半部を吸着保持して持ち上げ、この袋の前半部が前記搬送路の床面に接した状態で袋を前記受け渡し位置まで前進させた後、袋の吸着保持を解除して袋を前記受け渡し位置に供給する袋搬送装置と
を備え、
前記待機位置用ストッパは、前記袋位置規制状態のときに前記先端部に当接する袋の前端部の上方に位置し且つ下方を向いた光反射部を有し、
前記袋位置規制状態にある前記待機位置用ストッパの前記光反射部に向けて前記反射型光センサから光ビームを発することにより前記待機位置における袋の有無を検知することを特徴とする給袋機。 In the bag feeder that feeds the bags placed at the standby position one by one to the delivery position,
A conveyance path having a floor surface extending from at least the rear of the standby position to the delivery position;
A bag replenishing device for advancing a bag along the transport path from the rear of the standby position to replenish the bag to the standby position;
A bag position regulation state in which a bag replenished by the bag replenishing device is held at the standby position by a front end projecting on the floor surface of the transport path and coming into contact with a front end of the bag, and the front end is disposed on the transport path. A standby position stopper disposed so as to be movable between a bag position released state that retracts below the floor surface and allows the bag to advance from the standby position;
A reflective optical sensor disposed in the vicinity of the standby position stopper and below the floor surface of the transport path;
The second half of the bag placed at the standby position is sucked and held and lifted. After the front half of the bag is in contact with the floor surface of the transport path, the bag is advanced to the delivery position, and then the bag is sucked. A bag transport device for releasing the holding and supplying the bag to the delivery position ,
The standby position stopper has a light reflecting portion that is located above the front end portion of the bag that contacts the tip end portion in the bag position restricted state and faces downward.
A bag feeder for detecting the presence or absence of a bag at the standby position by emitting a light beam from the reflective optical sensor toward the light reflecting portion of the standby position stopper in the bag position regulation state. .
JP2009113627A 2009-05-08 2009-05-08 Bag feeder Active JP5284175B2 (en)

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