JP4965269B2 - Horizontal packaging machine - Google Patents

Horizontal packaging machine Download PDF

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JP4965269B2
JP4965269B2 JP2007005249A JP2007005249A JP4965269B2 JP 4965269 B2 JP4965269 B2 JP 4965269B2 JP 2007005249 A JP2007005249 A JP 2007005249A JP 2007005249 A JP2007005249 A JP 2007005249A JP 4965269 B2 JP4965269 B2 JP 4965269B2
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product
packaging material
packaging
sealing
packaging machine
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JP2008168933A (en
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浩之 小野寺
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株式会社川島製作所
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Description

この発明は、包装材内に送り込まれる包装物である製品に欠品が生じたときに、包装材送り手段及びシール手段に欠品に対応した作動が可能な横型包装機に関する。   The present invention relates to a horizontal packaging machine capable of operating in response to a shortage in packaging material feeding means and sealing means when a shortage occurs in a product which is a package to be fed into a packaging material.

従来、横型ピロー包装機の一例が図5に模式的に示されている。チューブ状の包装材を三方シールすることで製品Aを包装する横型ピロー包装機1(以下、「包装機1」と記す。)は、ベルトコンベヤ11を備える製品供給装置10と組み合わされており、フォーマ2によって側端縁が寄せられた湾曲状に成形されたウェブ状の包装材Fがセンターシーラ3によってセンターシールが施されてチューブ状に成形され、製品搬送手段である送り込みコンベヤ12によって搬送される製品Aが、フォーマ2の製品送り込み領域6において、湾曲状に成形された包装材Fの内部に一定の間隔Dを置いて送り込まれる。   Conventionally, an example of a horizontal pillow packaging machine is schematically shown in FIG. A horizontal pillow wrapping machine 1 (hereinafter referred to as “wrapping machine 1”) that wraps a product A by three-way sealing a tubular packaging material is combined with a product supply device 10 including a belt conveyor 11. A web-shaped packaging material F formed into a curved shape with the side edges thereof approached by the former 2 is center-sealed by the center sealer 3 and formed into a tube shape, and is conveyed by an infeed conveyor 12 which is a product conveying means. The product A to be fed is fed at a constant interval D into the curved packaging material F in the product feed region 6 of the former 2.

センターシーラ3の後流側で、シール手段である回転動作やボックスモーション動作をする高温のエンドシーラ4が配設されている。エンドシーラ4は、図示の例では加熱ワイヤへの通電によって高温に加熱される回転型の上下一対のヒータブロック4a,4aから成っており、ヒータブロック4a,4aがチューブ状の包装フィルムFをシール噛込み位置5において挟み込むことにより溶着する。チューブ状の包装フィルムF内に送り込まれる製品Aは、包装フィルムFと共に進行し、包装フィルムFを前後隣合う製品A,A間の位置で横断方向にエンドシーラ4でエンドシールを施すことによって包装袋B内に収容され、袋包装体Pが製造される。製品搬送手段は、送込みコンベヤ12と送込みコンベヤ12を駆動するサーボモータM1とを備えている。送り込みコンベア12には、製品Aの通過を検出する製品通過センサ14が配置されている。製品Aの通過(時間)を製品通過センサ14で検出することにより、製品Aの空きEが計測される。   On the downstream side of the center sealer 3, a high-temperature end sealer 4 that performs a rotation operation and a box motion operation as a sealing means is disposed. In the illustrated example, the end sealer 4 includes a pair of upper and lower rotary heater blocks 4a and 4a that are heated to a high temperature by energizing a heating wire. The heater blocks 4a and 4a seal the tube-shaped packaging film F. It welds by pinching in the biting position 5. The product A fed into the tube-shaped packaging film F travels together with the packaging film F, and the packaging film F is packaged by end sealing with the end sealer 4 in the transverse direction at a position between the products A and A adjacent to each other. It is accommodated in the bag B, and the bag package P is manufactured. The product conveying means includes an infeed conveyor 12 and a servo motor M <b> 1 that drives the infeed conveyor 12. A product passage sensor 14 for detecting the passage of the product A is disposed on the infeed conveyor 12. By detecting the passage (time) of the product A by the product passage sensor 14, the empty E of the product A is measured.

ウェブ状の包装フィルムを送る送りローラ8と、チューブ状の包装フィルムの合わせ縁部を挟んで送る紙送りローラ9、及び両ローラ8,9を駆動するフィルム送り駆動モータM2は、包装フィルムFを送る包装材送り手段である。更に、シール手段は、エンドシーラ4と、エンドシーラ4を駆動するエンドシール駆動モータM3を備えている。コントローラ7は、製品通過センサ14から入力する検出信号に基づいて、駆動モータM1〜M3の駆動を制御して製品供給制御と包装機1の制御を行っている。製品Aの供給が間隔D(ピッチp)で連続していれば各手段は通常の動作を行う。製品Aを包装材Fに送り込む送込みコンベヤ12の運転速度は、包装機1の包装処理速度に応じて、即ち、包装材Fの送り速度やエンドシーラ4の作動速度との一対一の対応関係が維持されつつ可変である。コントローラ7は、包装に先立って、包装機1を制御するために必要なデータ、即ち、製品Aの高さHと長さL、製品Aが包装された袋包装体Pのカット寸法L1、エンドシーラ4の回転半径R、ベルトコンベア11と送込みコンベヤ12との間の渡り位置15からエンドシーラ4のシール噛合い位置5までの距離L2等を取り込み可能である。   A feed roller 8 that feeds the web-shaped packaging film, a paper feed roller 9 that feeds the laminated edge of the tube-shaped packaging film, and a film feed drive motor M2 that drives both rollers 8, 9 It is a packaging material feeding means to send. Further, the sealing means includes an end sealer 4 and an end seal drive motor M3 for driving the end sealer 4. The controller 7 controls the product supply control and the packaging machine 1 by controlling the driving of the drive motors M <b> 1 to M <b> 3 based on the detection signal input from the product passage sensor 14. If the supply of the product A is continuous at the interval D (pitch p), each means performs a normal operation. The operating speed of the feed conveyor 12 that feeds the product A into the packaging material F corresponds to the packaging processing speed of the packaging machine 1, that is, a one-to-one correspondence relationship between the feeding speed of the packaging material F and the operating speed of the end sealer 4. Is variable while being maintained. Prior to packaging, the controller 7 includes data necessary for controlling the packaging machine 1, that is, the height H and length L of the product A, the cut dimension L1 of the bag package P in which the product A is packaged, the end The rotation radius R of the sealer 4, the distance L <b> 2 from the transition position 15 between the belt conveyor 11 and the feeding conveyor 12 to the seal engagement position 5 of the end sealer 4, and the like can be captured.

包装機1においては、供給される製品Aの間隔が欠品している場合にも包装機を一定の速度で作動させ続けると、製品Aが入っていない空袋を作ることになる。そのような事態が生じるのを回避するために、製品Aの空きがあったときには、包装機1の運転を一時的に停止させている。包装機1の運転停止後、製品Aの供給の再開を待機するが、エンドシーラ4がその停止位置で包装フィルムFと接触する状態で停止しないように、上記データに基づいて、エンドシーラ4の停止位置が予め決定される。このような包装機1では、製品供給、包装材供給、シーラ位置等の各種設定を再度確認してから運転を再開する必要があり、作業負担が増加するとともに包装機1の効率的な運転が期待できない。   In the packaging machine 1, if the packaging machine is continuously operated at a constant speed even when the interval between the supplied products A is missing, an empty bag without the product A is produced. In order to avoid such a situation, when the product A is available, the operation of the packaging machine 1 is temporarily stopped. After the operation of the packaging machine 1 is stopped, the supply of the product A is awaited. However, based on the above data, the end sealer 4 does not stop while the end sealer 4 is in contact with the packaging film F at the stop position. A stop position is determined in advance. In such a packaging machine 1, it is necessary to restart the operation after confirming various settings such as product supply, packaging material supply, sealer position, etc., and the work load increases and efficient operation of the packaging machine 1 is performed. I can't expect it.

製品の供給に欠品があったときに包装材の送りを自動的に停止し、後続の製品が所定の製品間隔に追いついたときに包装材の送りを自動的に再開することによって、製品が入っていない空袋を発生させるのを防止した包装機が提案されている。この包装機では、製品供給装置において欠品、即ち、製品の供給に空きがあるのが検出されると、包装材の送りとシール機構とが自動的に停止され、センサによって後続の製品が追いついたことの確認の後、包装材の送りとシール機構とを自動的に再開することで、製品が入っていない空袋を発生させるのを防止し、包装材の無駄な消費を無くすことを図っている。
特開2002−53104号公報
By automatically stopping packaging feed when there is a shortage in product supply and automatically restarting packaging feed when subsequent products catch up to a predetermined product interval, A packaging machine has been proposed that prevents the generation of empty bags that are not contained. In this packaging machine, when it is detected that the product supply device is out of stock, that is, there is a vacancy in the supply of the product, the feeding of the packaging material and the sealing mechanism are automatically stopped, and the subsequent product catches up with the sensor. After confirming this, the packaging material feed and sealing mechanism are automatically restarted to prevent the generation of empty bags that do not contain the product, and to eliminate wasteful consumption of packaging materials. ing.
JP 2002-53104 A

図6及び図7は、それぞれ製品Aの供給に1つ又は2つの空き(欠品)があった場合の、包装材としての包装フィルムFの送りの制御形態を模式的に示す説明図である。図6(a)に示すように、製品Aの供給に1つの空きEがあることを製品通過センサ14が検出した場合には、製品搬送手段である送り込みコンベア12の運転によって空きEが製品送り込み領域6に搬送されてきたとき(図6(b))に、包装材送り手段であるサーボモータM1による送り速度を停止するまで急激に減速させる(図6(d))。サーボモータM1の運転が停止されている期間t1に送り込みコンベア12の継続運転によって空きEの後続の製品Aが製品送り込み領域6に搬送されてきたとき(図6(c))に、サーボモータM1の運転を急加速して再開する。これによって、製品Aの供給に1つの空きEがあっても、空袋の発生を無くして袋包装体を連続して製造し、包装フィルムFの無駄な消費が防止されている。図7に示すように、製品Aの供給に2つの空きE1,E2がある場合には、サーボモータM1の運転が停止されている期間t2が、図6に示す期間t1よりも、後続の製品Aが製品送り込み領域6に搬送されてくるまで長くなる(図7(d))以外は製品Aの供給に1つの空きEがある場合と同様に、図7(a)〜(c)に示すように空袋の発生を無くして袋包装体を連続して製造可能である。   6 and 7 are explanatory views schematically showing a control mode of feeding the packaging film F as a packaging material when there is one or two vacancy (shortage) in the supply of the product A, respectively. . As shown in FIG. 6 (a), when the product passage sensor 14 detects that there is one empty E in the supply of the product A, the empty E is fed into the product by the operation of the infeed conveyor 12 as the product conveying means. When it has been transported to the region 6 (FIG. 6B), it is rapidly decelerated until the feeding speed by the servo motor M1 as the packaging material feeding means is stopped (FIG. 6D). When the succeeding product A in the empty E is conveyed to the product feeding area 6 by the continuous operation of the feeding conveyor 12 during the period t1 during which the operation of the servo motor M1 is stopped (FIG. 6 (c)), the servo motor M1. Accelerate your driving and resume. Thereby, even if there is one empty E in the supply of the product A, a bag package is continuously manufactured without generating an empty bag, and wasteful consumption of the packaging film F is prevented. As shown in FIG. 7, when there are two vacant E1 and E2 in the supply of the product A, the period t2 in which the operation of the servo motor M1 is stopped is longer than the period t1 shown in FIG. As shown in FIGS. 7A to 7C, as in the case where there is one vacant E in the supply of the product A except that A becomes longer until it is conveyed to the product feeding area 6 (FIG. 7D). Thus, it is possible to continuously produce a bag package without generating an empty bag.

しかしながら、包装材の送りの停止時及び再開時には減速及び加速のいずれの時にも加速度が大きく、1サイクル以内で包装材の加減速を行わねばならず、包装速度が高速になる場合には、高速であればあるほど、製品が包装材の急な加減速に追従できずに包装材に対して滑りを生じ、製品の包装材上の位置が所定の位置からずれるという現象が発生する。製品位置のずれは、エンドシーラでシールをするときの噛込みの原因となる。こうした空袋の発生を防止する包装機は、条件にもよるが、毎分400個程度の包装速度が対応できる限度である。   However, when the packaging material is stopped and restarted, the acceleration is great at both deceleration and acceleration, and the packaging material must be accelerated or decelerated within one cycle. The more the product is, the more the product cannot follow the rapid acceleration / deceleration of the packaging material, and the packaging material slips, causing a phenomenon that the position of the product on the packaging material deviates from a predetermined position. The deviation of the product position causes the bite when sealing with the end sealer. The packaging machine that prevents the occurrence of such empty bags is limited to a packaging speed of about 400 pieces per minute, although it depends on conditions.

高速包装機では、毎分1000〜1200個の袋包装体を出力可能な包装機もあり、製品の供給コンベアの前行程で供給空き(欠品)が発生すると、製品の詰めを施さない場合、欠品数に等しい連続した空袋が発生する。仮に5秒間の製品供給に空きがあると、空袋は80〜100個にも達し、無駄に消費される包装材量が無視できない。   In high-speed packaging machines, there are also packaging machines that can output 1000 to 1200 bag packages per minute. Consecutive empty bags equal to the number of missing items are generated. If there is a vacancy in the product supply for 5 seconds, the number of empty bags reaches 80 to 100, and the amount of packaging material consumed in vain cannot be ignored.

そこで、横型包装機において、包装速度が高速になった場合でも、供給される製品に欠品が生じたときに、包装機による包装の成立を維持しつつ、無駄になる包装材の量を可及的に少なくして空袋の発生を抑える点で解決すべき課題がある。   Therefore, in a horizontal packaging machine, even if the packaging speed becomes high, if there is a shortage in the supplied product, the amount of packaging material that is wasted can be maintained while maintaining the packaging by the packaging machine. There is a problem to be solved in terms of reducing the occurrence of empty bags as much as possible.

この発明の目的は、包装速度が高速になった場合でも、供給される製品に欠品が生じたときに、包装材の送りの停止・再開の際にエンドシーラでの製品の噛込みによる包装機の運転停止を回避し、製品が包装されない空袋の発生数を少なくして無駄となる包装材量を低減することができる横型包装機を提供することである。   The object of the present invention is to wrap the product by biting the product with the end sealer when the supply of the product is missing or when the supply of the packaging material is stopped or restarted even when the packaging speed is increased. It is an object of the present invention to provide a horizontal packaging machine capable of reducing the amount of packaging material that is wasted by avoiding stoppage of the machine and reducing the number of empty bags in which products are not packaged.

上記課題を解決するため、この発明による横型包装機は、製品の通過を検出する製品通過センサが配置された製品搬送手段と、前記製品を包むべき包装材を前記製品搬送手段によって送り込まれる前記製品を載置した状態で送る包装材送り手段、前記包装材を前後する前記製品間の位置で封じるため前記包装材にシールを施すシール手段、並びに前記製品搬送手段、前記包装材送り手段及び前記シール手段を制御するコントローラとを備え、前記コントローラは、前記製品通過センサが前記製品の欠品状態を検出したことに応答して、前記製品搬送手段からの前記欠品状態の領域が前記包装材の製品送り込み領域に到来する際に前記包装材の前記製品送り込み領域に載置製品無し部分を形成し、前記載置製品無し部分に対応して前記製品の1個分以上で且つ連続した前記欠品の個数未満の空袋を許容する態様で、前記包装材送り手段及び前記シール手段を制御することを特徴とする。   In order to solve the above-described problems, the horizontal packaging machine according to the present invention includes a product conveying means in which a product passage sensor for detecting the passage of a product is arranged, and the product into which a packaging material to wrap the product is fed by the product conveying means. Wrapping material feeding means for feeding in a state in which the packaging material is placed, sealing means for sealing the wrapping material for sealing at a position between the products before and after the packaging material, and the product conveying means, the packaging material feeding means, and the seal A controller for controlling the means, wherein the controller responds to the product passage sensor detecting a missing part state of the product, and the shortage state region from the product conveying means is a part of the packaging material. When the product arrives at the product feed area, a portion without the product to be placed is formed in the product feed area of the packaging material. In a manner that allows the empty bag below the number of the shortage of and contiguous with min or more, and controls the packaging material feed means and said sealing means.

この横型包装機によれば、製品搬送手段、包装材送り手段、シール手段、及びこれらの各手段の作動を制御するコントローラとを備えているので、製品搬送手段によって横方向に送り込まれる製品は、包装材送り手段によって供給される包装材に包まれて、シール手段によって封じられる。製品通過センサが通過する製品に空き、即ち、欠品状態を検出すると、コントローラは、当該検出に応じて、製品の1個分以上で且つ連続した欠品の個数未満の空袋を許容する態様で、包装材送り手段及びシール手段を制御するので、包装材送り手段による包装材の送りの加減速を緩やかにして、空袋の発生による包装材の若干の無駄は生じるが、大きな加速度に起因した製品や包装材の慣性による、包装機を停止させねばならないような不都合な状況の発生を未然に回避することができる。   According to this horizontal type packaging machine, since the product conveying means, the packaging material feeding means, the sealing means, and the controller that controls the operation of each of these means are provided, the product fed in the lateral direction by the product conveying means is It is wrapped in the packaging material supplied by the packaging material feeding means and sealed by the sealing means. When the product passage sensor detects a vacant product, that is, a missing product state, the controller allows an empty bag of one or more products and less than the number of consecutive missing products in response to the detection. Since the packaging material feeding means and the sealing means are controlled, the acceleration / deceleration of the packaging material feeding by the packaging material feeding means is moderated, and there is some waste of the packaging material due to the occurrence of empty bags, but it is caused by a large acceleration Occurrence of an inconvenient situation where the packaging machine must be stopped due to the inertia of the product or the packaging material can be avoided.

この横型包装機において、前記コントローラは、前記製品搬送手段による前記製品の搬送速度を所定速度に維持し、前記製品の2個以上の連続した前記欠品状態の検出に応答して、前記包装材送り手段について、前記包装材の送りの加減速を当該加速度に起因した前記製品の前記包装材に対する実質的な滑りを生じない大きさとして、前記包装材を減速して停止した後に加速する制御を行うことが好ましい。この横型包装機によれば、包装材送り手段の制御によって、包装材の送りの加減速は当該加速度に起因して製品が包装材に対して実質的な滑りを生じない程度の大きさに抑えられ、その結果、製品の包装材に対する送り込み方向前後に大きな位置ずれが生じず、シール手段が製品を噛み込むという不都合な状況を未然に防止することができる。   In this horizontal type packaging machine, the controller maintains the conveyance speed of the product by the product conveyance means at a predetermined speed, and responds to detection of two or more consecutive out-of-stock conditions of the product, Control for accelerating / decelerating the wrapping material after decelerating and stopping the wrapping material as a magnitude that does not cause substantial slip of the product with respect to the wrapping material due to the acceleration. Preferably it is done. According to this horizontal packaging machine, by controlling the packaging material feeding means, the acceleration / deceleration of the packaging material feed is suppressed to a level that does not cause the product to substantially slip with respect to the packaging material due to the acceleration. As a result, a large positional shift does not occur before and after the feeding direction of the product with respect to the packaging material, and an inconvenient situation where the sealing means bites the product can be prevented.

上記の横型包装機において、前記コントローラは、前記製品通過センサが前記製品の1個の欠品状態を検出した場合には、前記包装材送り手段及び前記シール手段の前記作動を、前記欠品状態の検出前と変えることなく継続してよい。製品の1個の欠品状態を検出した場合には、無駄な包装材の消費を抑えようとして包装材送り手段を無理に減速・停止・加速させると、包装材や製品の急な加減速を強いることになり、包装材の弛みや引っ張り過ぎ、或いは製品の慣性による包装材からの位置ずれを引き起こすことがある。その場合、却って、横型包装機の運転の停止や再開のための面倒な作業、或いは、包装の最後、或いは再開開始時に無駄な包装材を消費することになる。1個の製品が欠品しただけの場合には包装材の送りを継続することで、形成される空袋を最小限の一つで済ますことができる。   In the horizontal packaging machine, when the product passage sensor detects one missing item state of the product, the controller controls the operation of the packaging material feeding unit and the sealing unit to the missing item state. You may continue without changing it from before the detection. When a missing product is detected, if the packaging material feeding means is forcibly decelerated, stopped, or accelerated in an attempt to reduce the consumption of unnecessary packaging materials, sudden acceleration or deceleration of the packaging material or product will occur. This may force the packaging material to become loose or excessively pulled, or cause the product to be displaced from the packaging material due to inertia. In that case, wasteful packaging material is consumed at the time of the troublesome work for stopping or restarting the operation of the horizontal packaging machine, or at the end of packaging or at the start of restarting. If only one product is missing, the packaging material can continue to be fed, and the formed empty bag can be completed with a minimum of one.

この発明による横型包装機は、製品搬送手段、包装材送り手段、シール手段、及びこれらの各手段を制御するコントローラとを備え、コントローラは、製品通過センサが製品の欠品状態を検出したことに応答して、製品搬送手段からの欠品状態の領域が包装材の製品送り込み領域に到来する際に包装材の製品送り込み領域に載置製品無し部分を形成し、載置製品無し部分に対応して製品の1個分以上で且つ連続した欠品の個数未満の空袋を許容する態様で、包装材送り手段及びシール手段を制御する。したがって、包装速度が高速になった場合でも、供給される製品に欠品が生じたときに、包装材や製品に急な加減速を強いることがなく、包装材の弛みや引っ張り過ぎ、或いは製品の慣性による包装材からの位置ずれを引き起こすことがない。その結果、包装材の送りの停止・再開の際に、包装材の送りや縦シールの不良、或いはエンドシーラでの製品の噛込みによる包装機の運転停止を回避し、製品が包装されない空袋の発生数を少なくして無駄となる包装材量を低減できる横型包装機を提供することができる。また、製品搬送手段、包装材送り手段及びシール手段の構造については、従来の各手段と変更する必要がなく、また、包装材送り手段及びシール手段の運転制御というソフト的に対応可能であるので、包装機としての構造は複雑化することなく、高速包装時における製品供給の欠品状態に対応して、包装機としての効率的な運転制御と包装材の無駄な消費量低減との間でバランスの取れた横型包装機を提供することができる。   The horizontal wrapping machine according to the present invention comprises a product conveying means, a packaging material feeding means, a sealing means, and a controller for controlling each of these means, and the controller detects that the product passing sensor has detected a missing product state. In response, when the out-of-stock area from the product transport means arrives at the product infeed area of the packaging material, a part with no product is formed in the product infeed area of the packaging material, and the area with no product in place is supported. The packaging material feeding means and the sealing means are controlled in such a manner as to allow empty bags that are equal to or more than one product and less than the number of continuous shortages. Therefore, even when the packaging speed becomes high, if there is a shortage in the supplied product, the packaging material or product is not forced to suddenly accelerate and decelerate, the packaging material is too loose or pulled, or the product It does not cause displacement from the packaging material due to inertia. As a result, when stopping / resuming the feeding of the packaging material, it is possible to avoid a packaging material feed or vertical seal failure, or stop the operation of the packaging machine due to product biting in the end sealer, and the product is not packed Therefore, it is possible to provide a horizontal packaging machine that can reduce the amount of waste generated and reduce the amount of packaging material that is wasted. Further, the structure of the product conveying means, the packaging material feeding means, and the sealing means need not be changed from the conventional means, and can be handled in software such as operation control of the packaging material feeding means and the sealing means. The structure of the packaging machine does not become complicated, and it corresponds to the shortage of product supply at the time of high-speed packaging, between efficient operation control as a packaging machine and reduction of wasteful consumption of packaging materials. A balanced horizontal packaging machine can be provided.

以下、添付した図面に基づいて、この発明による横型包装機の実施例を説明する。図1はこの発明による横型包装機において、製品の供給に2つの空きがあった場合の包装材の送りの制御形態を模式的に示す説明図である。横型包装機20(以下、「包装機20」と記す。)それ自体の構造は図5に示す構造と同等であり、製品搬送手段である送り込みコンベア12、包装材送り手段としてのローラ8,9及びサーボモータM1、シール手段としてのセンターシーラ3とエンドシーラ4、及びこれらの各手段の作動を制御するコントローラ7とを備えている。したがって、製品搬送手段によって横方向に送り込まれる製品Aは、包装材送り手段によって供給される包装材に包まれて、シール手段によって封じられる。包装機20は、コントローラ7の機能において相違している。   Hereinafter, an embodiment of a horizontal packaging machine according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is an explanatory view schematically showing a control mode for feeding a packaging material in the case where there are two vacant product supplies in the horizontal packaging machine according to the present invention. The structure of the horizontal wrapping machine 20 (hereinafter referred to as “wrapping machine 20”) itself is the same as the structure shown in FIG. 5, and is a feed conveyor 12 as product conveying means and rollers 8 and 9 as wrapping material feeding means. And a servo motor M1, a center sealer 3 and an end sealer 4 as sealing means, and a controller 7 for controlling the operation of each of these means. Therefore, the product A fed in the lateral direction by the product conveying means is wrapped in the packaging material supplied by the packaging material feeding means and sealed by the sealing means. The packaging machine 20 is different in the function of the controller 7.

コントローラ7は、製品通過センサ14が製品Aの2個の連続する欠品状態を検出する。このとき、コントローラ7は、この欠品の検出に応答して、製品搬送手段である送り込みコンベア12の欠品状態の領域E1,E2が、フォーマ2の開口位置に形成される包装フィルムFの製品送り込み領域6に到来する際に、包装フィルムFの製品送り込み領域6に製品Aの1個分に相当する載置製品無し部分Eaを形成し、載置製品無し部分Eaに対応して製品Aの1個分の空袋を許容する態様で、包装材送り手段である紙送りローラ9とエンドシーラ4を制御する。   In the controller 7, the product passage sensor 14 detects two consecutive shortage states of the product A. At this time, in response to the detection of the shortage, the controller 7 is the product of the packaging film F in which the shortage areas E1 and E2 of the infeed conveyor 12 which is the product conveying means are formed at the opening position of the former 2. When arriving at the infeed area 6, a product-free portion Ea corresponding to one product A is formed in the product-feed region 6 of the packaging film F, and the product A corresponding to the product-free portion Ea is formed. The paper feed roller 9 and the end sealer 4 as the packaging material feeding means are controlled in a mode that allows one empty bag.

包装機20において、コントローラ7は、送り込みコンベア12による製品Aの搬送速度を所定速度に維持する。またし、コントローラ7は、製品の2個の連続した欠品状態の検出に応答して、紙送りローラ9等の包装材送り手段について、包装フィルムFの送りの加減速を当該加速度に起因した製品の包装材に対する実質的な滑りを生じない大きさとして、包装フィルムFを減速して停止した後に加速する制御を行う。その結果、包装フィルムFの送りの加減速に起因して,製品Aがその慣性によって包装フィルムFに対する送り込み方向前後に大きな位置ずれが生じず、エンドシーラ4が製品Aを噛み込むという事態を未然に防止することができる。   In the packaging machine 20, the controller 7 maintains the conveying speed of the product A by the infeed conveyor 12 at a predetermined speed. Further, the controller 7 responds to the detection of two consecutive shortage states of the product, and causes the acceleration / deceleration of the feeding of the packaging film F to the packaging material feeding means such as the paper feeding roller 9 due to the acceleration. Control that accelerates after decelerating and stopping the packaging film F as a size that does not cause substantial slip of the product with respect to the packaging material. As a result, due to the acceleration / deceleration of the feeding of the packaging film F, the product A is not greatly displaced in the front and rear directions in the feeding direction with respect to the packaging film F due to its inertia, and the end sealer 4 bites the product A in advance. Can be prevented.

包装機20によれば、紙送りローラ9の制御は、図1(d)に示すように、通常の送り速度Vfと停止時の速度0との間で、包装フィルムFの送りの加減速が緩やかにする制御となる。この例では、緩やかな減速(Dec)によって速度が0になった直後に緩やかな加速(Acc)を開始する。そのため、送り込みコンベア12が定速走行しているときに、図1(a)に示すように、欠品状態の領域E1,E2が製品通過センサ14で検出されるときには、包装材送り手段はまだ包装フィルムFをそれまでの送り速度で送り継続している。欠品状態の領域E1が製品送り込み領域6に到来するときに、包装材送り手段は減速(Dec)して、製品Aの半個分の空きを形成する(製品Aの移動は2分の1ピッチ(p/2);図1(b))。次に、欠品状態の領域E2が製品送り込み領域6に到来するときに、包装材送り手段は加速(Acc)してその間に製品Aの更に半個分の空きを形成し(製品Aの移動は更に2分の1ピッチ(p/2);図1(c))、先に形成した半個分の空きと合わせて、包装フィルムFの製品送り込み領域6には製品Aの1個分の載置製品無し部分Ea(製品Aの移動はトータルで1ピッチp)が形成される。載置製品無し部分Eaは、エンドシーラ4でエンドシールが施されたときに、空袋を生じさせる。包装フィルムには製品1個分の無駄は生じるが、この無駄は最小限のものである。大きな加速度に起因した製品Aの移動や包装フィルムFの弛みや引っ張り等の、包装機20を停止させねばならないような不都合な状況の発生を未然に回避することができる。   According to the packaging machine 20, as shown in FIG. 1 (d), the paper feed roller 9 is controlled by acceleration / deceleration of the feed of the packaging film F between the normal feed speed Vf and the stop speed 0. The control is gentle. In this example, moderate acceleration (Acc) is started immediately after the speed becomes zero due to gentle deceleration (Dec). Therefore, when the infeed conveyor 12 is traveling at a constant speed, as shown in FIG. 1 (a), when the out-of-stock areas E1 and E2 are detected by the product passage sensor 14, the packaging material feeding means is still The packaging film F is continuously fed at the previous feeding speed. When the out-of-stock state area E1 arrives at the product feeding area 6, the packaging material feeding means decelerates (Dec) to form a half of the product A (the movement of the product A is one half). Pitch (p / 2); FIG. 1 (b)). Next, when the out-of-stock state area E2 arrives at the product feeding area 6, the packaging material feeding means accelerates (Acc) and forms a half space for the product A in the meantime (movement of the product A). Is one-half pitch (p / 2); FIG. 1 (c)), and together with the previously formed half-piece empty space, the product-feeding area 6 of the packaging film F is equivalent to one piece of the product A. A portion Ea having no loaded product (the movement of the product A is 1 pitch p in total) is formed. When the end sealer 4 is applied with the end seal, the no-product-placed portion Ea generates an empty bag. The packaging film wastes one product, but this waste is minimal. Occurrence of an unfavorable situation in which the packaging machine 20 must be stopped, such as movement of the product A due to large acceleration, loosening or pulling of the packaging film F, can be avoided.

図2はこの発明による横型包装機において、製品の供給に3つの空きがあった場合の包装材の送りの制御形態を模式的に示す説明図である。この例では、製品Aの供給に連続した3つの空きE1,E2,E3がある場合には、サーボモータM1による紙送りローラ9の駆動が停止されている期間が、後続の製品Aが製品送り込み領域6に搬送されてくるまで長くなる(期間t3)以外、図1に示すように製品Aの供給に2つの空きE1,E2がある場合と同様に、製品Aの1個分の空袋が発生し、その前後で袋包装体を連続して製造可能である。即ち、図2(a)の状態から、欠品状態の領域E1が製品送り込み領域6に到来するときに、包装材送り手段は減速(Dec)して、製品Aの半個分の空きを形成する(製品Aの移動は2分の1ピッチ(p/2);図2(b))。次の欠品状態の領域E2が製品送り込み領域6に到来するときには、包装材送り手段は停止している。更に、欠品状態の領域E3が製品送り込み領域6に到来するときに、包装材送り手段は加速(Acc)してその間に製品Aの更に半個分の空きを形成し(製品Aの移動は更に2分の1ピッチ(p/2))、先に形成した半個分の空きと合わせて、包装フィルムFの製品送り込み領域6には製品Aの1個分の載置製品無し部分Ea(製品Aの移動はトータルで1ピッチp)が形成される(図2(c))。   FIG. 2 is an explanatory view schematically showing a control mode for feeding a packaging material in the case where there are three vacancies in product supply in the horizontal packaging machine according to the present invention. In this example, when there are three consecutive empty spaces E1, E2, and E3 for supplying the product A, the subsequent product A feeds the product during the period in which the drive of the paper feed roller 9 by the servo motor M1 is stopped. Except for the length of time until it is transported to the region 6 (period t3), as shown in FIG. 1, as in the case where there are two empty E1 and E2 in the supply of the product A, there is an empty bag for one product A. It is generated, and the bag package can be continuously manufactured before and after that. That is, when the out-of-stock area E1 arrives at the product feeding area 6 from the state shown in FIG. 2A, the packaging material feeding means decelerates (Dec) to form a half of the product A. (Product A moves half pitch (p / 2); FIG. 2 (b)). When the next shortage state area E2 arrives at the product feeding area 6, the packaging material feeding means is stopped. Further, when the out-of-stock state area E3 arrives at the product feeding area 6, the packaging material feeding means accelerates (Acc) and forms a vacant space for another half of the product A during that time (the movement of the product A is In addition, a half pitch (p / 2)) and the half of the vacant space formed earlier, the product feed area 6 of the packaging film F has a product-free portion Ea (one product A) ( The total movement of the product A is 1 pitch (p) (FIG. 2 (c)).

図3はこの発明による横型包装機において、製品の供給に1つの空きがあった場合の包装材の送りの制御形態を模式的に示す説明図である。コントローラ7は、製品通過センサ14が製品の1個の欠品状態を検出した場合には、包装材送り手段及びシール手段の作動を、欠品状態の検出前と変えることなく継続する制御を行う。製品の1個の欠品状態を検出した場合に無駄な包装材の消費を抑えようとして包装材送り手段を無理に減速・停止・加速させると、包装材や製品の急な加減速を強いることになり、包装機20の運転の停止や再開のための面倒な作業、或いは、包装の最後、或いは再開開始時に無駄な包装材を消費するという従来と同じ結果になる。1個の製品Aが欠品しただけの場合には包装フィルムFの送りをそのままの速度で継続することで、形成される空袋を最小限の一つで済ますことができる。   FIG. 3 is an explanatory view schematically showing a form of controlling the feeding of the packaging material when there is one vacant product supply in the horizontal packaging machine according to the present invention. When the product passage sensor 14 detects one missing item state of the product, the controller 7 performs control to continue the operation of the packaging material feeding means and the sealing means without changing from the state before the missing item state is detected. . If the packaging material feeding means is forcibly decelerated, stopped, or accelerated in an attempt to suppress wasteful packaging material consumption when one missing product is detected, the packaging material or product must be suddenly accelerated or decelerated. Thus, the troublesome work for stopping and resuming the operation of the packaging machine 20, or the wasteful packaging material is consumed at the end of packaging or at the start of resumption. If only one product A is missing, the wrapping film F can be continuously fed at the same speed, so that the formed empty bag can be completed with a minimum of one.

図4には、この発明による横型包装機の制御の一例を示すフローチャートが示されている。この制御フローによれば、包装フィルム送り動作を行っているとき(ステップ1、「S1」と記す。以下、同じ。)に、製品Aの供給連続空き(図 1〜図3のBに相当)が限界の加減速量で加減速するときに対応する長さ以上であるか否かを判定する(S2)。限界の加減速量とは、それ以上の加減速であるとすると製品Aがその慣性によって包装フィルムFに対して滑り、実質的な位置ずれを生じるような加減速量である。S2の判定がYesである場合には、製品Aの供給連続空きが十分長いことになり、包装フィルムFを停止するまで減速する(S3)。S2の判定がNoである場合には、製品Aの供給連続空きが十分でなく、停止させて直ちに加速するとしたときに限界の加減速量以上の加減速を要し、慣性に起因した問題を生じることになるので、S1に戻り、包装フィルム送り動作を継続する。これは、製品Aの空きが1個の場合に相当する。S3において、製品通過センサ14が供給される製品Aを探知して包装フィルムFの送り速度を加速開始するか否かを判定する(S4)。S4の判定がYesである場合には、包装フィルムFの加速動作を開始して、その後、S1に戻る。また、S4の判定がNoである場合には、製品通過センサ14が供給される製品Aを探知するまでこの判定を繰り返す。   FIG. 4 shows a flowchart showing an example of the control of the horizontal packaging machine according to the present invention. According to this control flow, when the packaging film feeding operation is performed (step 1, “S1”, the same applies hereinafter), the continuous supply of product A (corresponding to B in FIGS. 1 to 3) is performed. It is determined whether or not is longer than the length corresponding to acceleration / deceleration with the limit acceleration / deceleration amount (S2). The limit acceleration / deceleration amount is an acceleration / deceleration amount that causes the product A to slide with respect to the packaging film F due to its inertia and to cause a substantial displacement if the acceleration / deceleration is more than that. When the determination of S2 is Yes, the supply continuous vacancy of the product A is sufficiently long, and it is decelerated until the packaging film F is stopped (S3). If the determination in S2 is No, the continuous supply of product A is not sufficient, and when acceleration is performed immediately after stopping, acceleration / deceleration more than the limit acceleration / deceleration amount is required. Therefore, the process returns to S1 and the packaging film feeding operation is continued. This corresponds to the case where there is one product A available. In S3, it is determined whether or not the product A supplied by the product passage sensor 14 is detected and acceleration of the feeding speed of the packaging film F is started (S4). When determination of S4 is Yes, the acceleration operation | movement of the packaging film F is started, and it returns to S1 after that. If the determination in S4 is No, this determination is repeated until the product A to which the product passage sensor 14 is supplied is detected.

包装機20においては、構成する各手段のハード構成を変えることなく、包装材送り手段の加減速というソフトでの対策により、製品Aの空き量に応じて包装材送り手段とシール手段の動作を制御するという簡単な対策で、包装材の消費量を低減することができる。包装材の送りの加減速が製品Aの包装フィルムFに対する位置ずれを生じさせるような限界の加減速を超えないので、シール手段が製品Aを噛み込むというような不都合を未然に防止することができる。また、製品Aの供給検出に合わせた包装材の送り再開については、限界の加減速を超えない範囲の加速を保って行われ、最小限の個数である1個の空袋に抑えることができ、包装フィルムの無駄な消費を未然に防止することができる。   In the packaging machine 20, the operation of the packaging material feeding means and the sealing means according to the available amount of the product A can be performed by the software measure of acceleration / deceleration of the packaging material feeding means without changing the hardware configuration of each means constituting the packaging machine 20. A simple measure of controlling can reduce the consumption of the packaging material. Since the acceleration / deceleration of the feeding of the packaging material does not exceed the limit acceleration / deceleration that causes the positional shift of the product A with respect to the packaging film F, it is possible to prevent inconveniences such as the sealing means biting the product A in advance. it can. In addition, the resumption of the packaging material in line with the detection of the supply of the product A is performed while maintaining the acceleration within a range not exceeding the limit acceleration / deceleration, and can be suppressed to one empty bag which is the minimum number. Therefore, useless consumption of the packaging film can be prevented.

上記の実施例では、空袋の発生を最小限である1個として説明したが、包装速度等の条件にもよるが、空袋の発生を製品Aの空き個数未満とすることができる。例えば、製品Aに3つの連続する空きがあるときには、空袋は2つとしてもよい。また、製品Aに4つの連続する空きがあるときには、空袋は2つ又は3つとしてもよい。   In the above-described embodiment, the generation of the empty bag is described as one that is the minimum, but the generation of the empty bag can be less than the number of empty products A, depending on conditions such as the packaging speed. For example, when the product A has three consecutive empty spaces, the number of empty bags may be two. Further, when the product A has four consecutive empty spaces, the number of empty bags may be two or three.

上記の実施例では、エンドシーラ4を回転型のヒートシーラとしたが、これに代えてボックスモーションをするシーラとしてもよく、また、シールと共に袋包装体P毎に切断・分離させるカッタを備えることもできる。更に、包装機20については、横ピロー包装機を例に挙げて説明したが、ウェブ状の包装材を下方から供給して上側でセンターシールを行う逆ピロー包装機や、ウェブ状の包装材に製品を収容する凹部を絞り成形し、製品が収容された凹部を別の包装材で覆ってシールする横型の絞り成形包装機にも適用可能であることは明らかである。   In the above embodiment, the end sealer 4 is a rotary heat sealer. However, instead of this, a sealer that performs box motion may be used, and a cutter that cuts and separates each bag package P together with a seal may be provided. it can. Further, the packaging machine 20 has been described by taking a horizontal pillow packaging machine as an example. However, the packaging machine 20 can be applied to a reverse pillow packaging machine that supplies a web-shaped packaging material from below and performs center sealing on the upper side, or a web-shaped packaging material. It is obvious that the present invention can also be applied to a horizontal type drawing and packaging machine in which a concave portion that accommodates a product is formed by drawing and the concave portion that contains the product is covered with another packaging material and sealed.

この発明による横型包装機において、製品の供給に2つの空きがあった場合の包装材の送りの制御形態を模式的に示す説明図である。In the horizontal packaging machine by this invention, it is explanatory drawing which shows typically the control form of the feeding of a packaging material when there are two vacancy in supply of a product. この発明による横型包装機において、製品の供給に3つの空きがあった場合の包装材の送りの制御形態を模式的に示す説明図である。In the horizontal packaging machine by this invention, it is explanatory drawing which shows typically the control form of the feeding of a packaging material when there are three vacancy in supply of a product. この発明による横型包装機において、製品の供給に1つの空きがあった場合の包装材の送りの制御形態を模式的に示す説明図である。In the horizontal packaging machine by this invention, it is explanatory drawing which shows typically the control form of the feeding of a packaging material when there is one empty for supply of a product. この発明による横型包装機の制御の一例を示すフローチャートである。It is a flowchart which shows an example of control of the horizontal packaging machine by this invention. 横型ピロー包装機の一例を模式的に示す側面図である。It is a side view which shows typically an example of a horizontal pillow packaging machine. 製品の供給に1つの空きがあった場合の、包装材の送りの制御形態を模式的に示す説明図である。It is explanatory drawing which shows typically the control form of the feeding of a packaging material when there is one empty for supply of a product. 製品の供給に2つの空きがあった場合の、包装材の送りの制御形態を模式的に示す説明図である。It is explanatory drawing which shows typically the control form of feeding of a packaging material when there are two vacancy in supply of a product.

符号の説明Explanation of symbols

1 横型ピロー包装機 2 フォーマ
3 センターシーラ 4 エンドシーラ
4a,4a ヒータブロック 5 シール噛込み位置
6 製品送り込み領域 7 コントローラ
8 ローラ 9 紙送りローラ
10 製品供給装置 11 ベルトコンベヤ
12 送り込みコンベヤ
14 製品通過センサ 15 渡り位置
20 横型包装機
A 製品 B 包装袋
D 間隔
E,E1,E2,E3 製品Aの空き(欠品状態の領域) Ea 載置製品無し部分
F 包装材
H 製品Aの高さ L 製品Aの長さ
L1 カット寸法 L2 距離
M1 サーボモータ M2 フィルム送り駆動モータ
M3 エンドシール駆動モータ
P 袋包装体 R 回転半径
t1,t2 期間
DESCRIPTION OF SYMBOLS 1 Horizontal pillow packaging machine 2 Former 3 Center sealer 4 End sealer 4a, 4a Heater block 5 Seal biting position 6 Product feed area 7 Controller 8 Roller 9 Paper feed roller 10 Product supply device 11 Belt conveyor 12 Feed conveyor 14 Product passage sensor 15 Crossover position 20 Horizontal packaging machine A Product B Packaging bag D Interval E, E1, E2, E3 Empty space of product A (area in shortage) Ea No part of product to be mounted F Packaging material H Height of product A L Product A Length L1 Cut dimension L2 Distance M1 Servo motor M2 Film feed drive motor M3 End seal drive motor P Bag package R Turning radius t1, t2 Period

Claims (3)

製品の通過を検出する製品通過センサが配置された製品搬送手段と、前記製品を包むべき包装材を前記製品搬送手段によって送り込まれる前記製品を載置した状態で送る包装材送り手段、前記包装材を前後する前記製品間の位置で封じるため前記包装材にシールを施すシール手段、並びに前記製品搬送手段、前記包装材送り手段及び前記シール手段を制御するコントローラとを備え、
前記コントローラは、前記製品通過センサが前記製品の欠品状態を検出したことに応答して、前記製品搬送手段からの前記欠品状態の領域が前記包装材の製品送り込み領域に到来する際に前記包装材の前記製品送り込み領域に載置製品無し部分を形成し、前記載置製品無し部分に対応して前記製品の1個分以上で且つ連続した前記欠品の個数未満の空袋を許容する態様で、前記包装材送り手段及び前記シール手段を制御することを特徴とする横型包装機。
Product conveying means in which a product passage sensor for detecting the passage of the product is arranged, packaging material feeding means for sending the packaging material to be wrapped around the product in a state where the product fed by the product conveying means is placed, and the packaging material A sealing means for sealing the packaging material for sealing at a position between the products before and after the product, and a controller for controlling the product conveying means, the packaging material feeding means and the sealing means,
The controller responds to the fact that the product passage sensor has detected the shortage state of the product, and when the shortage state region from the product transport means arrives at the product feed region of the packaging material, A portion without a product to be placed is formed in the product feed area of the packaging material, and an empty bag that is equal to or more than one piece of the product and less than the number of continuous shortages corresponding to the portion with no product to be placed is allowed. The horizontal packaging machine according to the aspect, wherein the packaging material feeding means and the sealing means are controlled.
前記コントローラは、前記製品搬送手段による前記製品の搬送速度を所定速度に維持し、前記製品の2個以上の連続した前記欠品状態の検出に応答して、前記包装材送り手段について、前記包装材の送りの加減速を当該加速度に起因した前記製品の前記包装材に対する実質的な滑りを生じない大きさとして、前記包装材を減速して停止した後に加速する制御を行うことを特徴とする請求項1に記載の横型包装機。   The controller maintains the conveyance speed of the product by the product conveyance means at a predetermined speed, and in response to detection of two or more consecutive missing parts of the product, the packaging material feeding means Control of accelerating and decelerating the packaging material as a magnitude that does not cause substantial slipping of the product with respect to the packaging material due to the acceleration is performed after the packaging material is decelerated and stopped. The horizontal packaging machine according to claim 1. 前記コントローラは、前記製品通過センサが前記製品の1個の欠品状態を検出した場合には、前記包装材送り手段及び前記シール手段の前記作動を、前記欠品状態の検出前と変えることなく継続することを特徴とする請求項1又は2に記載の横型包装機。   When the product passage sensor detects one missing product state of the product, the controller does not change the operation of the packaging material feeding means and the sealing means from that before detecting the missing product state. The horizontal packaging machine according to claim 1 or 2, which is continued.
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