JP5158822B2 - Bag seal device - Google Patents

Bag seal device Download PDF

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JP5158822B2
JP5158822B2 JP2011209737A JP2011209737A JP5158822B2 JP 5158822 B2 JP5158822 B2 JP 5158822B2 JP 2011209737 A JP2011209737 A JP 2011209737A JP 2011209737 A JP2011209737 A JP 2011209737A JP 5158822 B2 JP5158822 B2 JP 5158822B2
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猛 長谷川
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株式会社フジキカイ
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本発明は、袋状に形成されて内方に物品を収容した包装袋の搬送方向と交差する方向にシールする袋シール装置に関するものである。 The present invention relates to a bag sealing device that seals in a direction intersecting with a conveyance direction of a packaging bag that is formed in a bag shape and contains an article inward.

物品が内部に収容された包装材を所定方向へ搬送すると共に、該包装材の搬送路を挟んで上下に対向する一対のシール体で包装材を上下から挟持して包装材の搬送方向に移動させつつ加熱シールする横シール装置が知られている。このような横シール装置は、フィルム供給源から引き出したフィルムを製袋手段を経て筒状に成形した筒状フィルム内に物品を所定間隔で供給し、その筒状フィルムにおける各物品間を加熱シールすると共に切断することで袋詰包装体を得るようにした横型製袋充填機のエンドシール装置(例えば特許文献１参照)や、包装袋に物品を袋詰めした袋詰品の袋口を加熱シールすることで袋詰包装体を得るようにした袋シール装置(例えば特許文献２参照)として採用される。これら何れのタイプのシール装置においても、前記シール体は、物品を収容した包装材の搬送路を挟んで反対方向に旋回するよう構成されて、搬送過程において包装材を挟持した状態で包装材の搬送方向に向けて移動することにより該包装材に横シールを施し、その後一対のシール体が相互に離間移動するように構成されている。   The packaging material in which the article is contained is transported in a predetermined direction, and the packaging material is sandwiched from above and below by a pair of seal bodies facing each other up and down across the transport path of the packaging material and moved in the packaging material transport direction. A horizontal sealing device that heat-seals while making it known is known. Such a horizontal sealing device supplies articles at predetermined intervals into a cylindrical film formed from a film supply source through a bag-making means into a cylindrical shape, and heat seals between the articles in the cylindrical film. End-sealing device (see, for example, Patent Document 1) of a horizontal type bag making and filling machine that obtains a bag-packed body by cutting and heat-sealing a bag mouth of a bag-packed product in which an article is packed in a packaging bag By doing so, it is adopted as a bag sealing device (see, for example, Patent Document 2) that can obtain a packaged package. In any of these types of sealing devices, the sealing body is configured to rotate in the opposite direction across the conveyance path of the packaging material containing the article, and the packaging material is sandwiched in the conveyance process. By moving toward the conveying direction, the packaging material is laterally sealed, and then the pair of sealing bodies are moved away from each other.

前述した特許文献２に開示された袋シール装置では、物品が袋詰めされた袋詰品を袋口が後方に向く姿勢でシール位置へ向けて搬送する第１コンベヤが配設される一方で、一対のシール体の下流側には、袋詰包装体を搬送する第２コンベヤが配設されている。この第２コンベヤは、シール体で加熱シールされた袋詰包装体を第１コンベヤの搬送速度以上の速度で搬出するよう構成されている。 In a bag sealing device disclosed in Patent Document 2 before mentioned, while the first conveyor for conveying the bags packed product the article is bagged into sealing position in a posture in which the bag mouth is directed rearward is disposed The 2nd conveyor which conveys a bagging packaging body is arrange | positioned in the downstream of a pair of seal body. This 2nd conveyor is comprised so that the packaged packaging body heat-sealed by the sealing body may be carried out at the speed | rate beyond the conveyance speed of a 1st conveyor.

特開平７−２６７２０３号公報JP 7-267203 A 特許第３６１２６４７号公報Japanese Patent No. 3612647

前記特許文献２に開示の如き袋シール装置において高速処理が要求される場合には、袋詰機の処理速度を高めるのに伴い上流側に配設された第１コンベヤによる包装袋の搬送速度を高めると共に、下流側の第２コンベヤは第１コンベヤより更に高速となる搬送速度に高めることになる。それに伴い、シール体の旋回速度を高速に設定する必要が生ずると共に、一対のシール体を第２コンベヤの搬送速度と同じ速度で下流側へ移動させることとなる。従って、袋詰品が高速搬送されるのに伴い袋詰品の第２コンベヤでの搬送位置にバラツキが発生し易く、シール体での袋口のシール位置ズレが起きてしまうといった問題も指摘される。更には、高速化に伴ってシール皺の発生率が高まり、特にシール時に袋口にガセットを施す際に折込量や折込形状のバラツキが発生するのに加えて、良好なシール状態を維持することが困難となる。また、第１コンベヤおよび第２コンベヤの速度差により、第１コンベヤから第２コンベヤへの物品の受け渡し時に袋詰品の姿勢が乱れ、適正なシールが困難になるといった様々な問題が指摘される。 When the high-speed processing is required in such a bag sealing apparatus before Symbol disclosed in Patent Document 2, the conveying speed of the packaging bag according to the first conveyor which is disposed upstream with to increase the processing speed of the bagging machine The second conveyor on the downstream side is increased to a conveyance speed that is higher than that of the first conveyor. Along with this, it becomes necessary to set the swiveling speed of the sealing body at a high speed, and the pair of sealing bodies are moved downstream at the same speed as the conveying speed of the second conveyor. Accordingly, it has been pointed out that the bag transported product tends to vary in the transport position on the second conveyor as the packaged product is conveyed at a high speed, and the sealing position of the bag opening of the sealing body is displaced. The Furthermore, increased incidence of seal wrinkles with the speed up, especially in addition to the variation of the folding amount or folding shape when subjected gussets occurs in the bag mouth during sealing, maintains a good seal state It becomes difficult. In addition, due to the difference in speed between the first conveyor and the second conveyor, various problems are pointed out such that the posture of the packaged item is disturbed during delivery of articles from the first conveyor to the second conveyor, and proper sealing becomes difficult. .

そこで、本発明は、袋詰機で高速処理が要求される場合であっても、良好なシール結果を得られる袋シール装置を提供することを目的とする。 Therefore, an object of the present invention is to provide a bag sealing device that can obtain a good sealing result even when high-speed processing is required in a bagging machine .

前記課題を克服し、所期の目的を達成するため、請求項１の発明に係る袋シール装置は、
袋口が後方へ向く姿勢で開口し物品を収容した包装袋を受け入れて搬送すると共に、前記袋口を一対のシール体で挟持して包装袋の搬送方向へ移動しつつ該袋口に横シールを施し、得られた袋詰包装体を搬出するよう構成した袋シール装置において、
袋詰機の押送体で押送される前記包装袋を受け入れ、該包装袋を前記押送体の押送速度に応じた速度で搬送する搬送コンベヤと、
該搬送コンベヤの下流側に前記シール体を挟んで配設され、前記袋詰包装体を搬出する排出コンベヤと、
該排出コンベヤを駆動する可変速モータとを備え、
前記搬送コンベヤと排出コンベヤとの対向端部間で前記シール体が前記袋口を挟持して包装袋の搬送方向下流側へ移動する所定期間の該シール体の移動速度が、前記搬送コンベヤの搬送速度より低速に設定され、
前記包装袋が搬送コンベヤから排出コンベヤに送り込まれるのに合わせて前記排出コンベヤを前記搬送コンベヤの搬送速度と同じ搬送速度とし、前記シール体で前記袋口を挟持するのに合わせて該排出コンベヤを前記シール体が包装袋の搬送方向下流側へ移動する移動速度と同じ搬送速度まで減速するよう前記可変速モータを駆動制御する構成としたことを特徴とする。
すなわち、物品を収容した包装袋が搬送コンベヤから排出コンベヤへ受け渡される際には、両コンベヤにおける包装袋の搬送速度が同じ速度となるから、包装袋の受け渡し時に包装袋と該袋内の収容物品との姿勢が乱れるのを防止できる。また、包装袋の袋口をシールする際には、シール体が包装袋の袋口を挟持してその搬送方向下流側へ移動する移動速度と同じ速度まで排出コンベヤが減速して包装袋を搬送する。ここで、包装袋の袋口を挟持してシール体がその搬送方向下流側へ移動する移動速度は、上流側の搬送コンベヤの搬送速度より低速となっているので、シール体が包装袋を挟持するまでの間に、包装袋が排出コンベヤにより搬送方向下流側へ先走りすることがなく、適正な位置でシールを施すことができる。またシール体の噛合時には、上流側の搬送コンベヤによる包装袋の搬送速度より低速の角速度で夫々のシール面が当接するよう設定されるので、噛合時の衝撃を低減してシール機構の各構成部品の損耗を抑えると共に、振動の発生を抑制し得る。更に、シール体で包装袋の袋口を挟持する前に包装袋の袋口を内側へ折り込んでガセット形成する場合においては、シール体が包装袋の袋口を両外から折り込むときに排出コンベヤは包装袋の搬送速度より低速になっていて包装袋を排出コンベヤにより搬送方向下流側へ引っ張らないので、フィルムの折込量や折込形状のバラツキを抑制でき、より効果的である。 In order to overcome the above-mentioned problems and achieve the intended object, a bag sealing device according to the invention of claim 1 is provided:
The bag mouth opens with the bag mouth facing backward and accepts and transports the packaging bag containing the articles, and the bag mouth is sandwiched between a pair of sealing bodies and moved in the direction of transporting the packaging bag while being horizontally sealed to the bag mouth. In a bag sealing device configured to carry out and carry out the obtained packaged package,
A transport conveyor for receiving the packaging bag fed by the feeding body of the bagging machine and transporting the packaging bag at a speed according to the feeding speed of the feeding body;
A discharge conveyor disposed on the downstream side of the conveyor for sandwiching the sealing body, and carrying out the packaged package;
A variable speed motor for driving the discharge conveyor,
Before Stories moving speed of the sealing member between the between the opposing end seal body where you move periodically to the downstream side in the transport direction of the packaging bag to sandwich the bag mouth of the conveyor and the discharge conveyor, the conveyor Set at a lower speed than the conveyor speed,
The packaging bag is the same conveying speed as the conveying speed of the conveyor to the discharge conveyor to suit to be fed to the discharge conveyor from the conveyor, the discharge conveyor to fit to sandwich the bag mouth by said sealing member The variable speed motor is driven and controlled so that the seal body is decelerated to the same conveying speed as the moving speed of the packaging bag moving downstream in the conveying direction.
That is, when the packaging bag containing the articles is delivered from the conveyor to the discharge conveyor, the packaging bags are transported at the same speed on both conveyors. It is possible to prevent the posture with the article from being disturbed. Also, when sealing the bag mouth of the packaging bag, the discharge conveyor decelerates to the same speed as the seal body sandwiches the bag mouth of the packaging bag and moves downstream in the conveying direction, and conveys the packaging bag. To do. Here, since the moving speed at which the seal body moves to the downstream side in the transport direction while sandwiching the bag mouth of the packaging bag is lower than the transport speed of the upstream transport conveyor, the seal body sandwiches the packaging bag. In the meantime, the packaging bag does not run forward in the transport direction by the discharge conveyor, and can be sealed at an appropriate position. Also, when the seal body is engaged, each sealing surface is set to abut at an angular velocity that is lower than the conveyance speed of the packaging bag by the upstream conveyor, so each component of the seal mechanism is reduced by reducing the impact during engagement. In addition, it is possible to suppress the generation of vibrations. Furthermore, in the case of forming the gusset by folding the bag mouth of the packaging bag inward before sandwiching the bag mouth of the packaging bag with the seal body, the discharge conveyor is used when the seal body folds the bag mouth of the packaging bag from the outside. Since the speed is lower than the transport speed of the packaging bag and the packaging bag is not pulled downstream in the transport direction by the discharge conveyor, the amount of folding of the film and the variation in the folded shape can be suppressed, which is more effective.

請求項２に係る袋シール装置では、前記排出コンベヤの搬送速度は、前記袋口を挟持したシール体が該袋口を解放するのに合わせて搬送コンベヤの搬送速度より高速の速度にすると共に、包装袋内に収容された物品の長さの略半分が排出コンベヤに送り込まれるまでに前記搬送コンベヤの搬送速度まで減速するよう前記可変速モータを駆動制御するようにしたことを特徴とする。
このように、包装袋に収容された物品の長さの略半分が送り込まれるまでに排出コンベヤを上流から送り込まれる物品の搬送速度と同じ速度まで減速することで、包装袋が無理に引っ張られるのが最も効果的に防止できる。 In the bag sealing device according to claim 2, the transport speed of the discharge conveyor is set to a speed higher than the transport speed of the transport conveyor in accordance with the release of the bag mouth by the seal body sandwiching the bag mouth, The variable speed motor is driven and controlled so as to decelerate to the transport speed of the transport conveyor before approximately half of the length of the article contained in the packaging bag is sent to the discharge conveyor.
In this way, the packaging bag is forcibly pulled by decelerating the discharge conveyor to the same speed as the conveying speed of the article fed from the upstream until approximately half of the length of the article accommodated in the packaging bag is fed. Can be most effectively prevented.

請求項３に係る袋シール装置では、搬送される包装袋を検出する検出センサを設け、該検出センサの検出信号に応じて、前記シール体および排出コンベヤの作動を制御するようにしたことを特徴とする。 In the bag sealing device according to claim 3, a detection sensor for detecting the conveyed packaging bag is provided, and the operation of the seal body and the discharge conveyor is controlled according to the detection signal of the detection sensor. And

本発明に係る袋シール装置によれば、高速で横シールする場合であっても物品が収容された包装袋のシール時に搬送されている包装袋が無理に引っ張られることがなく、シール皺の発生率が抑制された良好なシールをなし得ると共に、処理効率の向上を図り得る。 According to the bag sealing device according to the present invention, even when the horizontal sealing is performed at a high speed, the packaging bag being conveyed at the time of sealing the packaging bag containing the article is not pulled excessively, and the generation of the seal flaw is generated. A good seal with a reduced rate can be achieved, and the processing efficiency can be improved.

本発明の実施例に係る袋シール装置を示す概略側面図である。It is a schematic side view which shows the bag sealing apparatus which concerns on the Example of this invention.

次に、本発明に係る袋シール装置につき、好適な実施例を挙げて、添付図面を参照しながら以下詳細に説明する。なお、実施例では、搬送方向下流側を前側と指称し、搬送方向上流側を後側と指称することもある。 Next, the bag sealing apparatus according to the present invention will be described in detail below with reference to the accompanying drawings by giving a preferred embodiment. In the embodiment, the downstream side in the transport direction may be referred to as the front side, and the upstream side in the transport direction may be referred to as the rear side.

物品４０を袋詰めする包装袋３０の袋口をシールする本発明に係る袋シール装置について、図１を参照して説明する。なお、実施例に係る袋シール装置には、例えば前述した特許文献２に記載の従来公知の構成が採用でき、詳細な説明は省略する。 Things article 40 had a bag sealing device Nitsu according to the present invention to seal the bag mouth of the packaging Sobukuro 30 you bagged, it will be described with reference to FIG. Na us, the bag sealing apparatus according to the embodiment, for example, be a conventionally known configuration employed according to Patent Document 2 described above, a detailed description thereof will be omitted.

実施例に係る袋シール装置の上流側には、後方に開口する包装袋３０に、例えば複数のスライスパンを纏めた略矩形状を呈する食パン等の物品４０を挿入して袋詰めする袋詰機が配置されている。そして、物品４０が袋詰めされた包装袋３０は、袋詰機の押送体３２により押送されて搬送コンベヤ２０に受け渡されるよう構成される。なお、以下の説明では、袋詰機において物品４０が袋詰めされた包装袋３０を袋詰品３４と指称する。搬送コンベヤ２０で受け取った袋詰品３４は袋口が後方へ向く姿勢で該搬送コンベヤ２０により搬送方向下流側に接続された排出コンベヤ２２へ向けて搬送され、該搬送コンベヤ２０から排出コンベヤ２２に受け渡される過程において、上下一対のシール体２４,２４により袋口が熱シールされるよう構成される。なお、前記搬送コンベヤ２０の上流には、搬送される袋詰品３４を検出する検出センサ(図示せず)が設けられており、該検出センサからの袋詰品３４の検出信号に応じて、前記一対のシール体２４,２４や排出コンベヤ２２を駆動制御するよう構成される。すなわち、所定タイミング内に検出センサで袋詰品３４の到来が検出されない場合には、シール体２４,２４並びに排出コンベヤ２２の作動が一時的に停止し、次の袋詰品３４が検出センサで検出されることで袋シール装置の運転を再開するよう設定されている。 On the upstream side of the bag seal device according to the embodiment, a bagging machine for bagging by inserting an article 40 such as a bread having a substantially rectangular shape in which a plurality of sliced breads are gathered into a packaging bag 30 opened rearward. Is arranged. The packaging bag 30 in which the articles 40 are packed is pushed by a feeding body 32 of a bagging machine and delivered to the conveyor 20. In the following description, the packaging bag 30 in which the articles 40 are packed in the bagging machine is referred to as a bagged product 34. The bag 34 received by the transport conveyor 20 is transported by the transport conveyor 20 toward the discharge conveyor 22 connected downstream in the transport direction with the bag mouth facing backward, and is transferred from the transport conveyor 20 to the discharge conveyor 22. In the process of delivery, the bag mouth is configured to be heat-sealed by the pair of upper and lower sealing bodies 24, 24. In addition, a detection sensor (not shown) for detecting the packed product 34 to be transported is provided upstream of the transport conveyor 20, and in accordance with a detection signal of the packed product 34 from the detection sensor, configured to drive controls the seal member 24, 24 and discharge conveyor 22 before Symbol a pair. That is, when the arrival of the bag 34 is not detected by the detection sensor within a predetermined timing, the operations of the seal bodies 24 and 24 and the discharge conveyor 22 are temporarily stopped, and the next bag 34 is detected by the detection sensor. It is set so that the operation of the bag seal device is restarted when it is detected.

前記搬送コンベヤ２０は、インバータ等の速度設定手段により所定速度で回転する変速モータ５２で駆動されると共に、前記排出コンベヤ２２は、サーボモータ等からなる可変速モータ５４で駆動される。両コンベヤ２０,２２が対向する端部間において包装袋３０の袋口を挟持して横シールを施す前記一対のシール体２４,２４は、サーボモータ等の可変速モータ５６によって旋回駆動されるものであって、相互に反対方向に向けて旋回し、包装袋３０から最も離間した位置から上流側に旋回するのに伴って相互に近接して包装袋３０の袋口を絞り込んで挟持することで搬送方向と交差する方向に横シールすると共に、該包装袋３０の袋口を挟持した状態で包装袋３０の搬送方向下流側に向けて所要距離だけ水平移動した後に、相互に離間しつつ再び上流側に向けて旋回する、所謂ボックスモーション動作を行なうよう構成される。The transport conveyor 20 is driven by a speed change motor 52 that rotates at a predetermined speed by speed setting means such as an inverter, and the discharge conveyor 22 is driven by a variable speed motor 54 such as a servo motor. The pair of seal bodies 24, 24 that perform lateral sealing by sandwiching the bag mouth of the packaging bag 30 between the opposite ends of the conveyors 20, 22 are swiveled by a variable speed motor 56 such as a servo motor. In this case, the bag mouths of the packaging bag 30 are squeezed and pinched close to each other as they turn in the opposite directions and turn from the position farthest away from the packaging bag 30 to the upstream side. After laterally sealing in the direction intersecting the transport direction and horizontally moving the required distance toward the downstream side in the transport direction of the packaging bag 30 with the bag mouth of the packaging bag 30 sandwiched therebetween, the upstream side is again separated from each other and upstream It is configured to perform a so-called box motion operation that turns toward the side.

前記搬送コンベヤ２０と排出コンベヤ２２との夫々は、前記一対のシール体２４,２４が相互に近接移動する際に搬送コンベヤ２０の搬送終端部と排出コンベヤ２２の搬送始端部との対向端部間をシール体２４,２４の通過を許容し得るように相互に離間し、また一対のシール体２４,２４が相互に離間した際に前記各端部同士が近接するよう構成される。Each of the transport conveyor 20 and the discharge conveyor 22 is located between the opposite end portions of the transport end portion of the transport conveyor 20 and the transport start end portion of the discharge conveyor 22 when the pair of seal bodies 24 and 24 move close to each other. Are separated from each other so as to allow passage of the seal bodies 24, 24, and when the pair of seal bodies 24, 24 are separated from each other, the end portions are close to each other.

前記搬送コンベヤ２０での袋詰品３４の搬送速度は、前記袋詰機の押送体３２による袋詰品３４の搬送速度(第１速度Ｖ1)と同じ速度に設定されて変速モータ５２が定速駆動制御される。また前記一対のシール体２４,２４は、前記搬送コンベヤ２０と排出コンベヤ２２との対向する端部間において、前記袋詰品３４の袋口を挟持してその搬送方向下流側に水平移動した後に挟持を解放するまでの所定期間は前記搬送コンベヤ２０の搬送速度(第１速度Ｖ1)より低速に設定された速度(第２速度Ｖ2)で搬送方向下流側へ水平移動するよう可変速モータ５６が駆動制御される。なお、シール体２４,２４が袋口を挟持して袋詰品３４の搬送方向下流側へ移動する速度を搬送コンベヤ２０の搬送速度より低速(第２速度Ｖ2)とする期間は、シール体２４,２４が袋口を挟持するタイミングに合わせた適時から袋口の挟持を解放するタイミングに合わせた適時までとなっていればよい。 The conveying speed of the bags packed goods 34 in the previous SL conveyor 20, the conveying speed (the first speed V 1) and the shift motor 52 is set to the same speed of the pusher member 32 by the sacked product 34 of the bagging machine Constant speed drive control. Further, the pair of seal bodies 24, 24 are horizontally moved to the downstream side in the transport direction while sandwiching the bag mouth of the packaged product 34 between the opposite ends of the transport conveyor 20 and the discharge conveyor 22. A variable speed motor that moves horizontally downstream in the transport direction at a speed (second speed V 2 ) set lower than the transport speed (first speed V 1 ) of the transport conveyor 20 during a predetermined period until the nipping is released. 56 is driven and controlled. The period in which the seal member 24, 24 is a low speed (second speed V 2) than the conveying speed of the conveying speed conveyor 20 to move by holding the bag mouth to the downstream side in the conveying direction of the bags packed goods 34 over It suffices if the time between the time when the lugs 24, 24 are adjusted to the timing when the bag mouth is clamped and the time when the grip bodies 24 are released.

そして、前記排出コンベヤ２２は、前記一対のシール体２４,２４の旋回動作位置と袋詰品３４における包装袋３０内の物品４０の搬送位置とに応じて搬送速度が駆動制御されるようサーボモータ等の駆動制御可能な可変速モータ５４が駆動制御される。具体的には、前記排出コンベヤ２２の搬送速度は、前記可変速モータ５４が駆動制御されることにより前記袋詰品３４が搬送コンベヤ２０から排出コンベヤ２２に送り込まれるタイミングに合わせて搬送コンベヤ２０の搬送速度(第１速度Ｖ1)と同じ速度に設定され、また、前記一対のシール体２４,２４が袋詰品３４の袋口を挟持するタイミングに合わせたシール体２４,２４の旋回動作位置との関係に基づき、前記搬送コンベヤ２０の搬送速度(第１速度Ｖ1)より低速となる速度(第２速度Ｖ2)まで減速するよう設定される。また、排出コンベヤ２２は、前記一対のシール体２４,２４が袋詰品３４の袋口を挟持してその搬送方向下流側へ移動する際には、該シール体２４,２４の搬送方向下流側への移動速度(第２速度Ｖ2)と同じ速度に設定されて袋詰品３４を搬送する。 Then, the discharge conveyor 22, so that the conveying speed in accordance with the conveying position of the article 40 in the packaging bag 30 before Symbol pivoting operating position and bagged products 34 of the pair of sealing members 24, 24 is driven and controlled servo A variable speed motor 54 that can be driven and controlled, such as a motor, is driven and controlled. Specifically, the conveyance speed of the discharge conveyor 22 is adjusted according to the timing at which the bag 34 is fed from the conveyance conveyor 20 to the discharge conveyor 22 by the drive control of the variable speed motor 54. The swivel operation position of the seal bodies 24, 24 is set to the same speed as the transport speed (first speed V 1 ) and matched with the timing at which the pair of seal bodies 24, 24 sandwich the bag mouth of the bag 34. Is set to decelerate to a speed (second speed V 2 ) that is lower than the transport speed (first speed V 1 ) of the transport conveyor 20. Further, when the pair of seal bodies 24 and 24 move to the downstream side in the transport direction with the pair of seal bodies 24 and 24 sandwiching the bag mouth of the packaged product 34, the discharge conveyor 22 is downstream in the transport direction of the seal bodies 24 and 24. Is set to the same speed as the moving speed (second speed V 2 ) to transport the packed product 34.

なお、シール体２４,２４の１サイクル(一対のシール体２４,２４が噛合状態から旋回して次の噛合状態になる期間)の旋回速度は、袋詰品３４の袋口を挟持して搬送方向下流側に移動するときの速度(第２速度Ｖ2)が前記搬送コンベヤ２０による袋詰品３４の搬送速度(第１速度Ｖ1)以下の速度に設定され、残りの旋回動作範囲で包装速度との関係で１サイクル旋回を終えることができる速度でシール体２４,２４が旋回動作するよう前記可変速モータ５６が駆動制御される。すなわち、シール体２４,２４の１サイクル中において、シール体２４,２４の旋回速度を変速し得るよう設定されている。 Incidentally, the rotation speed of the one cycle of sheet Lumpur body 24, 24 (the period in which the pair of sealing members 24, 24 is next engaged state by turning the engaged state), clamp the bag mouth of the bagging goods 34 The speed (second speed V 2 ) when moving downstream in the transport direction is set to a speed equal to or lower than the transport speed (first speed V 1 ) of the bag 34 by the transport conveyor 20, and the remaining swivel operation range in the variable speed motor 56 to operate sealing member 24, 24 is turning at a rate that can be completed one cycle pivoting in relation to the packaging speed is driven and controlled. That is, it is set so that the turning speed of the sealing bodies 24, 24 can be changed during one cycle of the sealing bodies 24, 24.

すなわち、排出コンベヤ２２は、前記袋詰品３４における包装袋３０内の物品４０の搬送位置とシール体２４,２４の旋回動作位置とに応じて、前記搬送コンベヤ２０の搬送速度(第１速度Ｖ1)と同じ速度から前記シール体２４,２４が袋詰品３４の袋口を挟持して袋詰品３４の搬送方向下流側に移動する速度(第２速度Ｖ2)と同じ速度になるまでに滑らかに減速するよう設定される。 In other words, the discharge conveyor 22 moves the conveyance speed (first speed V) of the conveyance conveyor 20 according to the conveyance position of the article 40 in the packaging bag 30 and the swivel operation position of the seal bodies 24 and 24 in the bag 34. From the same speed as in 1 ) until the sealing bodies 24, 24 reach the same speed as the speed (second speed V 2 ) that sandwiches the bag mouth of the bag 34 and moves to the downstream side in the transport direction of the bag 34 It is set so as to smoothly decelerate to.

そして、前述のように構成された実施例に係る袋シール装置においては、袋詰機から搬送されてきた包装袋３０内に収容された物品４０が搬送コンベヤ２０から排出コンベヤ２２に送り込まれるタイミングに合わせて、該排出コンベヤ２２による袋詰品３４の搬送速度は搬送コンベヤ２０による袋詰品３４の搬送速度(第１速度Ｖ1)と同じ速度に設定されるから、排出コンベヤ２２への乗り移り時における袋詰品３４並びに袋内に収容された物品４０の姿勢の乱れが防止され、前記一対のシール体２４,２４が適正な位置で袋詰品３４の袋口を挟持して正確なシールが可能となる。 In the bag sealing device according to the embodiment configured as described above, the article 40 accommodated in the packaging bag 30 conveyed from the bagging machine is sent to the discharge conveyor 22 from the conveyance conveyor 20. At the same time, the transport speed of the bag 34 by the discharge conveyor 22 is set to the same speed as the transport speed (first speed V 1 ) of the bag 34 by the transport conveyor 20. The posture of the bag 34 and the article 40 accommodated in the bag is prevented from being disturbed, and the pair of seal bodies 24, 24 sandwich the bag mouth of the bag 34 at an appropriate position, so that an accurate seal is obtained. It becomes possible.

また、前記一対のシール体２４,２４が袋詰品３４の袋口を挟持するタイミングに合わせて、該シール体２４,２４が袋口を挟持して袋詰品３４の搬送方向下流側へ移動する移動速度(第２速度Ｖ2)と同じ速度となるよう排出コンベヤ２２による袋詰品３４の搬送速度が変速される。ここで、このときのシール体２４,２４の搬送方向下流側への移動速度は、前記搬送コンベヤ２０の搬送速度より低速(第２速度Ｖ2)に設定されるので、特許文献２に開示の袋シール装置に比しても低速で安定したシールをなし得る。また、前記一対のシール体２４,２４により袋詰品３４の袋口のフィルムを挟持してシールする際には、排出コンベヤ２２に載置されて搬送される袋詰品３４がシール体２４,２４(第２速度Ｖ2)と同じ速度でその搬送方向下流側へ移動するので、袋詰品３４が搬送方向下流側に無理に引っ張られることはなく、シール皺の発生等シール不良の発生を抑制して良好にシールを施すことが可能となる。また、シール時に搬送方向下流側へ無理な引張力が作用するのを防止できるから、シール体２４,２４が前記袋詰品３４の袋口を挟持して加熱シールする前に袋口を内側へ折り込んでガセット形成する場合では、フィルムの折込量や折込形状のバラツキを抑制でき、良好なガセットを形成し得る。更に、シール前に袋口を押えてエアを抜く処理を施すような場合においても、袋詰品３４が搬送方向下流側に引っ張られないようにして良好な処理が可能である。 In addition, the seal bodies 24, 24 sandwich the bag opening and move to the downstream side in the conveying direction of the bag 34 in accordance with the timing at which the pair of seal bodies 24, 24 sandwich the bag mouth of the bag 34. The conveyance speed of the packed product 34 by the discharge conveyor 22 is changed so as to be the same speed as the moving speed (second speed V 2 ). Here, since the moving speed of the seal bodies 24, 24 in the downstream direction in the transport direction at this time is set lower than the transport speed of the transport conveyor 20 (second speed V 2 ), it is disclosed in Patent Document 2. Even if compared with a bag sealing device, a stable seal can be achieved at a low speed. Further, when the film at the bag mouth of the packaged product 34 is sandwiched and sealed by the pair of seal bodies 24, 24, the packaged product 34 placed and transported on the discharge conveyor 22 is sealed. 24 (second speed V 2 ) moves to the downstream side in the conveying direction at the same speed, so that the packed product 34 is not forcibly pulled to the downstream side in the conveying direction. It is possible to suppress and satisfactorily seal. Further, since it is possible to prevent an excessive tensile force from acting downstream in the conveying direction at the time of sealing, before the sealing bodies 24, 24 sandwich the bag mouth of the bag 34 and heat seal it, the bag mouth is brought inward. In the case of forming the gusset by folding, the amount of folding of the film and the variation in the folding shape can be suppressed, and a good gusset can be formed. Furthermore, even in the case of performing a process of pushing out the bag mouth and releasing the air before sealing, it is possible to perform a satisfactory process by preventing the packed product 34 from being pulled downstream in the transport direction.

そして、前記一対のシール体２４,２４が袋詰品３４の袋口の挟持を解放するタイミングに合わせて、前記排出コンベヤ２２による袋詰品３４の搬送速度が前記搬送コンベヤ２０の搬送速度(第１速度Ｖ1)と同じ速度まで加速するよう設定される。このように、シール体２４,２４が袋口の挟持を解放したタイミングに合わせて排出コンベヤ２２の搬送速度を搬送コンベヤ２０の搬送速度と同じ速度に設定することで搬送コンベヤ２０の搬送速度との間の範囲での比較的小さい変速範囲として、排出コンベヤ２２の変速を滑らかに行なうことができる。この際の速度は、前記搬送コンベヤ２０の搬送速度より高速に設定された速度(第３速度Ｖ3)とすることもできる。この場合に、シール時に搬送コンベヤ２０の搬送速度より低速で搬送されることでの搬送遅れで搬送間隔が短くなった袋詰包装体４２の搬出間隔を広げることが求められる際にも、排出コンベヤ２２の搬送方向下流側に加速コンベヤを設置する等の対処をすることなくシールされて得られる袋詰包装体４２を所定間隔を維持して搬出することができる。 Then, in accordance with the timing when the pair of seal bodies 24, 24 release the nipping of the bag mouth of the bag 34, the transport speed of the bag 34 by the discharge conveyor 22 is the transport speed (the first speed of the transport conveyor 20). It is set to accelerate to the same speed as 1 speed V 1 ). In this way, by setting the transport speed of the discharge conveyor 22 to the same speed as the transport speed of the transport conveyor 20 in accordance with the timing at which the sealing bodies 24, 24 release the bag mouth, the transport speed of the transport conveyor 20 The discharge conveyor 22 can be smoothly shifted as a relatively small shift range in the range. The speed at can also be a pre-Symbol speed set faster than the conveying speed of the conveyor 20 (third speed V 3). In this case, the discharge conveyor is also used when it is required to widen the unloading interval of the packaged package 42 whose transfer interval has been shortened due to a delay in transfer due to being conveyed at a lower speed than the transfer speed of the transfer conveyor 20 during sealing. The packaged package 42 obtained by sealing without taking measures such as installing an accelerating conveyor downstream of the conveyance direction 22 can be carried out while maintaining a predetermined interval.

更に、袋詰品３４の袋口を挟持してその搬送方向下流側へ移動するシール体２４,２４の移動速度は、前記搬送コンベヤ２０の搬送速度(第１速度Ｖ1)より低速(第２速度Ｖ2)に設定されているので、搬送コンベヤ２０の搬送速度より低速の角速度で夫々のシール体２４,２４のシール面が当接することになり、シール体２４,２４の噛合時の衝撃を和らげ、シール体２４,２４を滑らかに旋回させることにより、シール体２４,２４やシール機構あるいはシール体２４,２４を駆動する可変速モータ５６等の耐用期間の向上や袋シール装置の運転時における振動の減少を図り得る。 Further, the moving speed of the seal bodies 24, 24 that sandwich the bag mouth of the bag 34 and move to the downstream side in the transport direction is lower than the transport speed (first speed V 1 ) of the transport conveyor 20 (second speed). Speed V 2 ), the sealing surfaces of the sealing bodies 24 and 24 come into contact with each other at an angular speed lower than the conveying speed of the conveying conveyor 20, and the impact when the sealing bodies 24 and 24 are meshed with each other. By softening and smoothly turning the seal bodies 24, 24, the service life of the seal bodies 24, 24, the seal mechanism or the variable speed motor 56 for driving the seal bodies 24, 24, etc. can be improved and the bag seal device can be operated. Vibration can be reduced.

実施例において、前記排出コンベヤ２２の搬送速度の速度制御に関して、包装袋３０内の物品４０が排出コンベヤ２２へ送り込まれるのに合わせて、排出コンベヤ２２の搬送速度を包装袋３０の搬送速度と同じ速度とする時期については、排出コンベヤ２２が減速されて物品４０の長さの略半分が排出コンベヤ２２へ送り込まれた後の所定時間後までにおいて同じ速度となるように、可変速モータ５４が駆動制御されるように設定されていればよい。また、シール体２４,２４で包装袋３０を挟持するのに合わせて、前記排出コンベヤ２２の搬送速度をシール体２４,２４が包装袋３０の搬送方向下流側へ移動する移動速度と同じ速度まで減速する時期については、シール体２４,２４による包装袋３０の挟持後から所定時間後までの間に当該一対のシール体２４,２４の移動速度と同じ速度となるように、可変速モータ５４が所定時期に減速駆動制御されるものであればよい。また、シール体２４,２４が包装袋３０の挟持を解放するのに合わせて、排出コンベヤ２２の搬送速度を包装袋３０の搬送速度より高速に設定する時期については、一対のシール体２４,２４が包装袋３０の挟持を解放した後の所定時間後までの間に包装袋３０の搬送速度より高速となるように、可変速モータ５４が所定時期に加速駆動制御されるようになっていればよい。 In actual施例, terms of speed control of the transport speed of the discharge conveyor 22, article 40 of the packaging Sobukuro 3 in 0 to fit to being sent to the discharge conveyor 22, the conveying speed of the discharge conveyor 2 2 of the packaging bag 30 About the time when it is set to the same speed as the conveying speed, the discharge conveyor 22 is decelerated, and the variable speed is set so that it becomes the same speed until a predetermined time after the half of the length of the article 40 is sent to the discharge conveyor 22. It is sufficient that the motor 54 is set so as to be driven and controlled. In conjunction to sandwich the packaging bag 30 by the sealing member 24, 24, to the same speed as the moving speed of the conveying speed of the discharge conveyor 22 sealing member 24, 24 moves to the downstream side in the transport direction of the packaging bag 30 With respect to the timing of deceleration, the variable speed motor 54 is set so as to have the same speed as the moving speed of the pair of seal bodies 24, 24 after the packaging bag 30 is clamped by the seal bodies 24, 24 until a predetermined time later. What is necessary is just to perform deceleration drive control at a predetermined time. Further, the seal member 24, 24 to fit to release the holding of the packaging bag 30, the timing for setting the conveying speed of the discharge conveyor 22 faster than the conveying speed of the packaging bag 30 comprises a pair of sealing members 24, 24 If the variable speed motor 54 is accelerated and controlled at a predetermined time so that the speed becomes higher than the conveyance speed of the packaging bag 30 after a predetermined time after the nipping of the packaging bag 30 is released. Good.

〔変更例〕
なお、本発明に係る袋シール装置としては、前述した実施例のものに限られるものではなく、種々の変更が可能である。
１．実施例では、シール体２４,２４を包装袋３０の搬送路を挟む上下に対向して配設する構成を示したが、該搬送路を挟む左右に対向するようシール体２４,２４を配設することもできる。
２．シール体２４,２４が包装袋３０の袋口を挟持してその搬送方向下流側に移動する際の速度(第２速度Ｖ2)は定速に限らず、必要に応じて一定幅の変速域が設けられるようにしてもよい。すなわち、包装袋３０の袋口を挟持して搬送方向下流側に移動する際のシール体２４,２４の移動速度(第２速度Ｖ2)は、包装袋３０の搬送速度(第１速度Ｖ1)より低速となる条件下で変速するよう設定可能である。なお、その際には排出コンベヤ２２の搬送速度も該シール体２４,２４の移動速度に合わせて変速すればよい。
３．実施例では搬送コンベヤ２０、排出コンベヤ２２は包装袋３０内に収容された物品４０を載置して搬送するコンベヤとしたが、そのような構成に特定されるものではない。例えば、物品４０の両側部から包装袋３０と共に挟み込んで搬送し得るコンベヤや、搬送路の上方から包装袋３０内に収容された物品４０を押えて搬送する方式、あるいはエア吸引によって包装袋３０を保持して走行するベルトコンベヤ、その他の種々の搬送コンベヤを適宜採用できる。
４．実施例では、シール体２４,２４を駆動する可変速モータ５６は１つでシール体旋回動作を与えるものとして例示したが、これに限らず、例えば、特開２００４−３５２２５１号や特開２００６−１６８８２３号に開示された如く、シール体２４,２４を水平動と垂直動とに別々に動作させる２つのモータで駆動する構成や、特許第３７８０４５０号に開示された如く、駆動モータとシリンダの組み合わせで前記水平動と垂直動とを行なう方式であってもよい。 [Example of change]
The bag sealing device according to the present invention is not limited to the above-described embodiment, and various modifications can be made.
1. In the embodiment, the sealing member 24, 24 showing a configuration to dispose opposite vertically sandwiching the conveyance path of the packaging Sobukuro 30, a sealing member 24, 24 so as to face the right and left sandwiching the conveyance path distribution It can also be set up.
2. The speed (second speed V 2 ) when the seal bodies 24, 24 hold the bag mouth of the packaging bag 30 and move downstream in the conveying direction is not limited to a constant speed, and a speed range with a constant width as required. May be provided. That is, the moving speed (second speed V 2 ) of the sealing bodies 24 and 24 when the bag mouth of the packaging bag 30 is sandwiched and moved downstream in the transport direction is the transport speed (first speed V 1 ) of the packaging bag 30. ) It can be set to change gears under lower speed conditions. In this case, the conveying speed of the discharge conveyor 22 may be changed in accordance with the moving speed of the seal bodies 24, 24.
3. In the embodiment, the conveyance conveyor 20 and the discharge conveyor 22 are conveyors that place and convey the articles 40 accommodated in the packaging bag 30, but are not limited to such a configuration. For example, a conveyor that can be sandwiched and conveyed with the packaging bag 30 from both sides of the article 40, a method that conveys the article 40 accommodated in the packaging bag 30 from above the conveyance path, or air suction is used for the packaging bag 30. A belt conveyor that holds and travels and other various conveyors can be used as appropriate.
4). In the embodiment, the variable speed motor 56 that drives the seal bodies 24 and 24 is exemplified as one that provides the seal body turning operation. However, the present invention is not limited thereto, and examples thereof include Japanese Patent Application Laid-Open Nos. 2004-352251 and 2006-2006. As disclosed in US Pat. No. 1,688,823, a structure in which the seal bodies 24, 24 are driven by two motors that operate separately in horizontal movement and vertical movement, or a combination of a driving motor and a cylinder as disclosed in Japanese Patent No. 3780450. In this case, the horizontal movement and the vertical movement may be performed.

２０ 搬送コンベヤ，２２ 排出コンベヤ，２４ シール体，３０ 包装袋
４０ 物品，４２ 袋詰包装体，５４ 可変速モータ 20 Conveyor, 22 Discharge conveyor, 24 Sealed body, 30 Packaging bag, 40 Items, 42 Packed packaging body, 54 Variable speed motor

Claims (3)

袋口が後方へ向く姿勢で開口し物品(40)を収容した包装袋(30)を受け入れて搬送すると共に、前記袋口を一対のシール体(24)で挟持して包装袋(30)の搬送方向へ移動しつつ該袋口に横シールを施し、得られた袋詰包装体(42)を搬出するよう構成した袋シール装置において、
袋詰機の押送体(32)で押送される前記包装袋(30)を受け入れ、該包装袋(30)を前記押送体(32)の押送速度に応じた速度(V1)で搬送する搬送コンベヤ(20)と、
該搬送コンベヤ(20)の下流側に前記シール体(24)を挟んで配設され、前記袋詰包装体(42)を搬出する排出コンベヤ(22)と、
該排出コンベヤ(22)を駆動する可変速モータ(54)とを備え、
前記搬送コンベヤ(20)と排出コンベヤ(22)との対向端部間で前記シール体(24)が前記袋口を挟持して包装袋(30)の搬送方向下流側へ移動する所定期間の該シール体(24)の移動速度が、前記搬送コンベヤ(20)の搬送速度(V1)より低速に設定され、
前記包装袋(30)が搬送コンベヤ(20)から排出コンベヤ(22)に送り込まれるのに合わせて前記排出コンベヤ(22)を前記搬送コンベヤ(20)の搬送速度(V1)と同じ搬送速度とし、前記シール体(24)で前記袋口を挟持するのに合わせて該排出コンベヤ(22)を前記シール体(24)が包装袋(30)の搬送方向下流側へ移動する移動速度(V2)と同じ搬送速度まで減速するよう前記可変速モータ(54)を駆動制御する構成とした
ことを特徴とする袋シール装置。 The bag mouth is opened with the bag mouth facing rearward and receives and transports the packaging bag (30) containing the article (40), and the bag mouth is sandwiched between a pair of seal bodies (24) to hold the packaging bag (30). In the bag sealing apparatus configured to carry out a horizontal seal on the bag mouth while moving in the conveying direction, and to carry out the obtained packaged package (42),
Transport for receiving the packaging bag (30) fed by the feeding body (32) of the bagging machine and transporting the packaging bag (30) at a speed (V 1 ) corresponding to the feeding speed of the feeding body (32) A conveyor (20);
A discharge conveyor (22) disposed on the downstream side of the transport conveyor (20) with the seal body (24) sandwiched between and carrying out the packaged package (42),
A variable speed motor (54) for driving the discharge conveyor (22),
Before SL conveyor (20) and discharge conveyor (22) and of the sealing body between opposite ends (24) to that Jo Tokoro movement to clamp the bag mouth to the downstream side in the transport direction of the packaging bag (30) The moving speed of the seal body (24) during the period is set to be lower than the transport speed (V 1 ) of the transport conveyor (20),
The packaging bag (30) is the conveying speed (V 1) and the same conveying speed of the conveyor the discharge conveyor (22) to fit to being fed into the discharge conveyor (22) from the transfer conveyor (20) (20) , the moving speed the sealing body (24) the bag mouth were combined to sandwich the sealing member the discharge conveyor (22) in (24) is moved to the downstream side in the transport direction of the packaging bag (30) (V 2 The bag seal device is characterized in that the variable speed motor (54) is driven and controlled so as to decelerate to the same conveying speed as in FIG. 前記排出コンベヤ(22)の搬送速度は、前記袋口を挟持したシール体(24)が該袋口を解放するのに合わせて搬送コンベヤ(20)の搬送速度(V 1 )より高速の速度(V 3 )にすると共に、包装袋(30)内に収容された物品(40)の長さの略半分が排出コンベヤ(22)に送り込まれるまでに前記搬送コンベヤ(20)の搬送速度(V1)まで減速するよう前記可変速モータ(54)を駆動制御するようにしたことを特徴とする請求項１記載の袋シール装置。 The transport speed of the discharge conveyor (22) is higher than the transport speed (V 1 ) of the transport conveyor (20) as the seal body (24) holding the bag mouth releases the bag mouth ( V 3 ) and the transfer speed (V 1 ) of the transfer conveyor (20) until approximately half of the length of the article (40) contained in the packaging bag (30) is sent to the discharge conveyor (22). The bag seal device according to claim 1, wherein the variable speed motor (54) is drive-controlled so as to decelerate the motor. 搬送される包装袋(30)を検出する検出センサを設け、該検出センサの検出信号に応じて、前記シール体(24)および排出コンベヤ(22)の作動を制御するようにしたことを特徴とする請求項１または２記載の袋シール装置。 A detection sensor for detecting the transported packaging bag (30) is provided, and the operation of the seal body (24) and the discharge conveyor (22) is controlled according to the detection signal of the detection sensor. The bag sealing device according to claim 1 or 2.
JP2011209737A 2011-09-26 2011-09-26 Bag seal device Active JP5158822B2 (en)

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