JP4976944B2

JP4976944B2 - Horizontal sealing device

Info

Publication number: JP4976944B2
Application number: JP2007187554A
Authority: JP
Inventors: 猛長谷川
Original assignee: 株式会社フジキカイ
Priority date: 2007-07-18
Filing date: 2007-07-18
Publication date: 2012-07-18
Anticipated expiration: 2027-07-18
Also published as: JP2009023674A

Description

本発明は、横型製袋充填機において筒状に形成されて内方に物品を収容した包装材の搬送方向と交差する方向にシールする横シール装置に関するものである。 The present invention relates to a horizontal sealing device that seals in a direction intersecting with a conveying direction of a packaging material that is formed in a cylindrical shape and contains articles inward in a horizontal bag making and filling machine .

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１に開示された横型製袋充填機のエンドシール装置では、一対のシール体の上流側に配設された第１コンベヤの搬送速度は筒状フィルムの搬送速度と同じ速度に設定されると共に、該シール体の下流側に配設された第２コンベヤは、筒状フィルムの搬送速度(第１コンベヤの搬送速度)より高速に設定されるようになっている。従って、一対のシール体によりシール・切断されて得られるピロー包装体は、後続の未包装物品から確実に切り離されて排出される。 In the end seal device of the horizontal bag making and filling machine disclosed in Patent Document 1 described above, the conveyance speed of the first conveyor disposed on the upstream side of the pair of seal bodies is set to the same speed as that of the cylindrical film. In addition, the second conveyor disposed on the downstream side of the seal body is set to be faster than the transport speed of the tubular film (the transport speed of the first conveyor). Therefore, the pillow package obtained by being sealed and cut by the pair of seal bodies is surely separated from the subsequent unwrapped articles and discharged.

また、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。
特開平７−２６７２０３号公報特許第３６１２６４７号公報 Further, in the bag sealing device disclosed in Patent Document 2 described above, a first conveyor is provided that conveys a bagged product packed with articles toward the sealing position with the bag mouth facing backward. And 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.
JP 7-267203 A Japanese Patent No. 3612647

前記特許文献１に開示の如きシール装置において筒状フィルムに供給された物品が所定の高さを有している場合には、一対のシール体の筒状フィルムの搬送方向に向けた移動速度は筒状フィルムの搬送速度より低速に設定されるのが一般的である。すなわち、シール体の直上流に位置する物品は筒状フィルムと同速で走行する第１コンベヤに載置されて移動するから、シール体で筒状フィルムを絞り込んで挟持した際に一対のシール体を筒状フィルムより低速でフィルムの搬送方向に移動することで、シール体との移動速度差により筒状フィルムに弛みが生じ、シール体で挟持された際に物品の高さ分絞り込まれた筒状フィルムはシール体によって引っ張られてしまうことはない。一方で、前記第２コンベヤは、筒状フィルムの搬送速度およびシール体のフィルム搬送方向への移動速度より高速に設定されている。従って、シール体より下流側の筒状フィルムは下流側への張力が作用して無理に引っ張られた状態となり、良好なシールをなし得ない問題が指摘される。また、フィルムの搬送速度より第２コンベヤの搬送速度の方が高速に設定されていることで、筒状フィルム内の物品が第１コンベヤから第２コンベヤに受け渡される際に物品の姿勢が乱れたり、位置ズレが発生したりする虞がある。これらの問題は、特に高速処理が要求される場合において顕著となる。更には、高速化に伴ってシール皺の発生率が高まり、特にシール時にガセットを施す際にフィルムの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。 When the article supplied to the tubular film has a predetermined height in the sealing device as disclosed in Patent Document 1, the moving speed of the pair of sealing bodies in the conveyance direction of the tubular film is Generally, it is set at a lower speed than the conveying speed of the tubular film. That is, since the article located immediately upstream of the sealing body is placed and moved on the first conveyor that travels at the same speed as the cylindrical film, the pair of sealing bodies is used when the cylindrical film is squeezed and sandwiched by the sealing body. Is moved in the film transport direction at a lower speed than the cylindrical film, the cylindrical film becomes slack due to the difference in moving speed with the sealing body, and the cylinder is squeezed by the height of the article when sandwiched by the sealing body The film is not pulled by the sealing body. On the other hand, the second conveyor is set at a higher speed than the transport speed of the tubular film and the moving speed of the sealing body in the film transport direction. Therefore, the tubular film on the downstream side of the sealing body is in a state where it is forcibly pulled due to the downstream tension, and there is a problem that a good seal cannot be achieved. In addition, since the conveyance speed of the second conveyor is set to be higher than the conveyance speed of the film, the posture of the article is disturbed when the article in the cylindrical film is transferred from the first conveyor to the second conveyor. Or misalignment may occur. These problems are particularly noticeable when high-speed processing is required. Furthermore, as the speed increases, the generation rate of seal wrinkles increases, and in particular, when the gusset is applied at the time of sealing, the amount of folding of the film and the variation of the folding shape are generated, and a good sealing state can be maintained. It becomes difficult.

また、前記特許文献２に開示の如き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、前述と同様に、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。 Further, when high speed processing is required in the sealing device as disclosed in Patent Document 2, the conveyance speed of the packaging bag by the first conveyor disposed on the upstream side as the processing speed of the bagging machine is increased. 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 In addition, as described above, the rate of occurrence of seal wrinkles increases as the speed increases, and in addition to the occurrence of variations in the amount of folding and the folding shape when gusseting the bag mouth during sealing, a good seal It becomes difficult to maintain the state. 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、横型製袋充填機において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横シール装置を提供することを目的とする。 Accordingly, an object of the present invention is to provide a horizontal sealing device that can obtain a good sealing result even when high speed processing is required in a horizontal bag making and filling machine .

前記課題を克服し、所期の目的を達成するため、本発明に係る横シール装置は、
内方に物品を収容して搬送される筒状フィルムを、前記各物品間において一対のシール体で挟持した状態で該シール体を筒状フィルムの搬送方向へ移動しつつ、該筒状フィルムを横シール・切断して袋詰包装体を得るよう構成した横型製袋充填機の横シール装置において、
前記筒状フィルムの搬送速度に応じた速度で前記物品を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、
前記シール体は、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筒状フィルムを挟持してから相互に離間するまでの所定期間において、前記搬送コンベヤの搬送速度より低速で筒状フィルムの搬送方向下流側へ移動され、
前記物品が搬送コンベヤから排出コンベヤへ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、前記シール体が前記各物品間においてその物品高さに応じて筒状フィルムを絞り込んで挟持するのに合わせて、その絞り量に相当する弛みが生ずるように排出コンベヤを減速し、前記シール体が筒状フィルムを挟持して搬送方向へ移動する移動速度と同じ搬送速度で排出コンベヤを走行させた後、前記シール体で挟持した筒状フィルムを解放するのに合わせて、排出コンベヤの搬送速度を搬送コンベヤの搬送速度より高速の速度に設定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要旨とする。
すなわち、筒状フィルム内の物品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、排出コンベヤの搬送速度を搬送コンベヤで搬送される筒状フィルムの搬送速度と同じ速度としたから、筒状フィルム内の物品の受け渡し時に筒状フィルムや物品の姿勢が乱れるのを防止できる。また、筒状フィルムをシールする際には、シール体が筒状フィルムを絞り込むのに合わせて、物品高さに応じた絞り量に相当する弛みが生ずるように排出コンベヤの搬送速度を減速すると共に一対のシール体が筒状フィルムを挟持して移動する移動速度と同じ速度まで減速するので、筒状フィルムが搬送方向下流側に無理に引っ張られることはなく、適正なシールを施すことができる。また、ガセット形成する場合においては、筒状フィルムを両外から折り込むときに排出コンベヤは搬送コンベヤで搬送される筒状フィルムの搬送速度より低速になっていて筒状フィルム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。更に、筒状フィルムをシールする際に、シール体の移動速度を搬送コンベヤの搬送速度より低速にすると共に排出コンベヤを減速することで、上流側の物品が徐々にシール体に近接するので物品に近い位置でのシール体による筒状フィルムの挟持が許容され、各物品の前後位置の近い位置に横シールが施されるだぶつきのない適正な包装長とした袋詰包装体を得ることができる。 In order to overcome the above-mentioned problems and achieve the intended purpose, a lateral seal device according to the present invention comprises:
The tubular film which is conveyed to accommodate the articles in the inner person, the while moving the seal member in the conveying direction of the tubular film while sandwiching a pair of seal members between the respective article, the tubular film In a horizontal sealing device of a horizontal bag making and filling machine configured to obtain a packaged package by horizontal sealing and cutting ,
A transport conveyor for transporting the article at a speed corresponding to the transport speed of the tubular film;
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,
The sealing body is formed at a lower speed than the conveying speed of the conveying conveyor in a predetermined period from the time when the cylindrical film is sandwiched between the opposed end portions of the conveying conveyor and the discharging conveyor to be separated from each other. Moved downstream in the transport direction,
The discharge conveyor is set to the same transfer speed as the transfer conveyor as the article is fed from the transfer conveyor to the discharge conveyor, and the sealing body is a tubular film according to the article height between the articles. As the paper is squeezed and pinched, the discharge conveyor is decelerated so that a slack corresponding to the amount of squeezing occurs, and the sealing body holds the tubular film and moves at the same transport speed as moving in the transport direction. After running the discharge conveyor, the variable speed motor is driven to set the transport speed of the discharge conveyor to a speed higher than the transport speed of the transport conveyor in accordance with the release of the cylindrical film sandwiched by the sealing body. and gist that a configuration control.
That is, when the articles in the cylindrical film are transferred from the conveyor to the discharge conveyor, the transfer speed of the discharge conveyor is the same as the transfer speed of the cylindrical film transferred by the transfer conveyor. It is possible to prevent the posture of the cylindrical film or the article from being disturbed when the article is delivered. Further, when sealing the tubular film, the conveying speed of the discharge conveyor is reduced so that a slack corresponding to the amount of squeezing corresponding to the article height occurs as the sealing body narrows the tubular film. Since the pair of seal bodies decelerate to the same speed as the moving speed when the cylindrical film is sandwiched and moved, the cylindrical film is not forcibly pulled to the downstream side in the transport direction, and an appropriate seal can be applied. Also, when forming gussets, when the tubular film is folded from both sides, the discharge conveyor is slower than the transport speed of the tubular film transported by the transport conveyor, and the tubular film is transported downstream by the discharge conveyor. Since it is not pulled to the side, the amount of folding of the film and the variation of the folding shape can be suppressed, which is more effective. Furthermore, when sealing the tubular film, the moving speed of the sealing body is set lower than that of the conveying conveyor and the discharging conveyor is decelerated, so that the upstream article gradually approaches the sealing body, so It is possible to obtain a packaged packaging body having an appropriate packaging length with no looseness, in which the cylindrical film is allowed to be sandwiched by the sealing body at a close position, and a lateral seal is applied at a position close to the front-rear position of each article.

請求項２に係る横型製袋充填機の横シール装置は、前記排出コンベヤの搬送速度は、筒状フィルム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ことを要旨とする。
このように、筒状フィルム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、筒状フィルムが無理に引っ張られるのが最も効果的に防止できる。 The horizontal sealing device of the horizontal bag making and filling machine according to claim 2 is configured such that the conveyance speed of the discharge conveyor is such that approximately half of the length of the article accommodated in the cylindrical film is sent to the discharge conveyor. The gist of the present invention is to drive and control the variable speed motor so as to decelerate to the conveyance speed.
In this way, the tubular film 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 tubular film is fed. Can be most effectively prevented.

本発明に係る横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筒状フィルムのシール時に搬送されている筒状フィルム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 transverse sealing device according to the present invention, without tubular film being fed during the sealing of the tubular film the article is accommodated even when the transverse seal is pulled by force at a high speed, the seal wrinkles As a result, it is possible to improve the processing efficiency.

次に、本発明に係る横シール装置につき、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 transverse seal device 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.

実施例１に係る横型製袋充填機は、図１に概略的に示すようにフィルム供給源から引き出された帯状フィルムを、筒状に成形する製袋手段１２が配置されると共に、製袋手段１２の下流側には筒状成形されたフィルムの長手方向の重合端縁部１０ａをシールする縦シール機構１４が設けられている。この縦シール機構１４には、サーボモータ等からなる可変速モータ５０により回転駆動される一対の加熱ローラ１６,１６と一対の送りローラ１７,１７とが設けられており、前記筒状フィルム１０の重合端縁部１０ａを挟持して連続的に縦シールしつつ、送りローラ１７,１７により筒状フィルム１０を横シール装置へ向けて搬送するよう構成される。なお、製袋手段１２で成形された筒状フィルム１０内へ供給手段によって物品４０が所定間隔毎に供給され、該包装材としての筒状フィルム１０は、内部に所定間隔毎に収容された物品４０と共に横シール装置に向けて搬送されるようになっている。 The horizontal bag filling machine according to the first embodiment, the strip-like film drawn from the film supply source as shown schematically in Figure 1, the bag-making means 12 for forming the tubular is arranged, bag-making means On the downstream side of 12, a longitudinal sealing mechanism 14 is provided for sealing the overlapping edge portion 10a in the longitudinal direction of the cylindrically formed film. The vertical seal mechanism 14 is provided with a pair of heating rollers 16 and 16 and a pair of feed rollers 17 and 17 that are rotationally driven by a variable speed motor 50 such as a servo motor. The cylindrical film 10 is transported toward the horizontal sealing device by the feed rollers 17 and 17 while sandwiching the overlapping edge portion 10a and continuously performing vertical sealing. The article 40 is supplied into the cylindrical film 10 formed by the bag making means 12 at predetermined intervals by the supply means, and the cylindrical film 10 as the packaging material is stored inside the cylindrical film 10 at predetermined intervals. 40 is conveyed toward the horizontal sealing device together with 40.

前記横シール装置は、前記筒状フィルム１０の搬送方向に沿うよう配設されて筒状フィルム１０の搬送速度(第１速度Ｖ₁)に応じて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で駆動される搬送コンベヤ２０と、該搬送コンベヤ２０の搬送方向下流側に配設され、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駆動制御可能なサーボモータ等からなる可変速モータ５４で駆動される排出コンベヤ２２と、両コンベヤ２０,２２が対向する端部間において筒状フィルム１０を挟持して横シールを施す一対のシール体２４,２４とから構成される。すなわち、物品４０を所定間隔毎に収容した筒状フィルム１０は、搬送コンベヤ２０を経て排出コンベヤ２２に受け渡される。そして、両コンベヤ２０,２２が対向する端部間において、上下一対のシール体２４,２４が筒状フィルム１０に供給された物品４０,４０間において筒状フィルム１０を挟持して筒状フィルム１０の搬送方向と交差する方向に横シールを施すと共に切断して、袋詰包装体としてのピロー包装体４２を得ることができる。 The horizontal sealing device is disposed along the conveyance direction of the tubular film 10 and is rotated at a predetermined speed by speed setting means such as an inverter in accordance with the conveyance speed (first speed V ₁ ) of the tubular film 10. A conveyor 20 driven by a variable speed motor 52 and a servo that is disposed downstream of the conveyor 20 in the conveyance direction and can be driven and controlled in accordance with the conveyance position of the article 40 and the swiveling operation positions of the seal bodies 24 and 24. A discharge conveyor 22 driven by a variable speed motor 54 including a motor and the like, and a pair of seal bodies 24, 24 that sandwich the tubular film 10 between the opposite ends of the conveyors 20, 22 and perform horizontal sealing. Composed. In other words, the tubular film 10 containing the articles 40 at predetermined intervals is delivered to the discharge conveyor 22 via the transport conveyor 20. And between the ends which both conveyors 20 and 22 oppose, a pair of upper and lower seal bodies 24 and 24 sandwich the tubular film 10 between the articles 40 and 40 supplied to the tubular film 10, and the tubular film 10 It is possible to obtain a pillow package 42 as a packaged package by laterally sealing and cutting in a direction intersecting with the conveying direction.

図２に示すように、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、筒状フィルム１０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筒状フィルム１０を絞り込んで挟持することで加熱シールすると共に、該筒状フィルム１０を挟持した状態で筒状フィルム１０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(図２に一対のシール体２４,２４の移動軌跡を一点鎖線で示す)。なお、シール体２４,２４で筒状フィルム１０を挟持した際に、一方のシール体２４に配設されたカッタが作動してシール部分で筒状フィルム１０が切断されて、得られたピロー包装体４２が排出コンベヤ２２によって排出されるようになっている。実施例では、図２(a)に示すように、筒状フィルム１０内の物品４０が、長さ寸法の略半分まで排出コンベヤ２２に送り込まれたときに、前記一対のシール体２４,２４が筒状フィルム１０から最も離間する位置となるようシール体２４,２４の旋回動作タイミングが設定されている。なお、横型製袋充填機のシール装置の具体的な各部の構成は、前述した特許文献１、その他の公知の各種構成を採用すればよい。 As shown in FIG. 2, the pair of seal bodies 24, 24 are swiveled by a variable speed motor 56 such as a servo motor, and swivel in directions opposite to each other. As it turns from the most distant position to the upstream side, the tubular film 10 is squeezed and pinched close to each other for heat sealing, and the tubular film 10 is held in a state where the tubular film 10 is sandwiched. It is configured to perform a so-called box motion operation in which it moves horizontally by a required distance toward the downstream side in the transport direction and then turns toward the upstream side again while being separated from each other (a pair of seal bodies 24, 24 in FIG. 2). The movement trajectory is indicated by a dashed line). Note that when the cylindrical film 10 is sandwiched between the seal bodies 24, 24, the cutter disposed in one of the seal bodies 24 is actuated to cut the cylindrical film 10 at the seal portion. The body 42 is discharged by the discharge conveyor 22. In the embodiment, as shown in FIG. 2 (a), when the article 40 in the tubular film 10 is sent to the discharge conveyor 22 to approximately half the length, the pair of seal bodies 24, 24 are The swivel operation timing of the seal bodies 24, 24 is set so as to be the most distant from the tubular film 10. In addition, what is necessary is just to employ | adopt the well-known various structure of the patent document 1 mentioned above for the structure of the concrete part of the sealing apparatus of a horizontal type bag making filling machine.

また、前記一対のシール体２４,２４が噛合して筒状フィルム１０の搬送方向下流側へ水平移動する際、すなわち前記筒状フィルム１０を挟持してシール体２４,２４が筒状フィルム１０の搬送方向下流側に向けて移動する際の移動速度は、筒状フィルム１０の搬送速度(第１速度Ｖ₁)より低速となる所定の速度(第２速度Ｖ₂)に設定される(図２(b)参照)。なお、筒状フィルム１０より低速とする比率は物品高さとの関係を考慮して設定される。また、筒状フィルム１０内に収容されている物品４０の高さ寸法が大きく、前記一対のシール体２４,２４が筒状フィルム１０を挟持するに際して筒状フィルム１０の絞り量が多い場合には、シール体２４,２４による筒状フィルム１０の挟持位置が搬送方向下流側の物品寄りに設定される。そして、一対のシール体２４,２４が筒状フィルム１０を挟持した状態では、該一対のシール体２４,２４の直上流に位置する物品４０が、シール体２４,２４の移動速度(第２速度Ｖ₂)より高速となる筒状フィルム１０の搬送速度(第１速度Ｖ₁)で搬送されることにより、シール体２４,２４との速度差によって上流側の物品４０が徐々にシール体２４,２４に近接して、シール体２４,２４を挟む前後の物品４０,４０間の中央にシール体２４,２４が位置する。その後にシール体２４,２４が筒状フィルム１０の挟持を解放し、次の物品４０,４０間で筒状フィルム１０を挟持すべく旋回する。これにより筒状フィルム１０内に高さのある物品４０が収容されている場合においても、物品４０に近い位置でのシール体２４,２４による筒状フィルム１０の挟持が許容され、各物品４０の前後位置の近い位置に設定しただぶつきのない適正な包装長とした袋詰包装体４２を得ることができる。 Further, when the pair of seal bodies 24, 24 mesh and move horizontally downstream in the transport direction of the tubular film 10, that is, the seal bodies 24, 24 sandwich the tubular film 10 so that the seal bodies 24, 24 The moving speed when moving toward the downstream side in the transport direction is set to a predetermined speed (second speed V ₂ ) that is lower than the transport speed (first speed V ₁ ) of the tubular film 10 (FIG. 2). (See (b)). In addition, the ratio which makes it slower than the cylindrical film 10 is set in consideration of the relationship with the article height. Further, when the height dimension of the article 40 accommodated in the tubular film 10 is large, and when the pair of seal bodies 24, 24 sandwich the tubular film 10, the amount of squeezing of the tubular film 10 is large. The sandwiching position of the tubular film 10 by the seal bodies 24, 24 is set closer to the article on the downstream side in the transport direction. Then, in a state where the pair of seal bodies 24, 24 sandwich the cylindrical film 10, the article 40 positioned immediately upstream of the pair of seal bodies 24, 24 moves the moving speed (second speed) of the seal bodies 24, 24. V ₂ ) By transporting the cylindrical film 10 at a higher speed (first speed V ₁ ), the upstream article 40 gradually becomes the sealing body 24, due to the speed difference from the sealing bodies 24, 24. The seal bodies 24 and 24 are located in the center between the articles 40 and 40 before and after the seal bodies 24 and 24 sandwiched therebetween. Thereafter, the sealing bodies 24, 24 release the sandwich of the tubular film 10 and rotate to sandwich the tubular film 10 between the next articles 40, 40. As a result, even when the article 40 having a height is accommodated in the tubular film 10, the tubular film 10 is allowed to be held by the sealing bodies 24, 24 at a position close to the article 40. It is possible to obtain a packaged package 42 with an appropriate packaging length that is set to a position close to the front-rear position and has no bumps.

なお、シール体２４,２４が筒状フィルム１０を挟持してそ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、筒状フィルム１０を挟持した時点以降の所定時間後から挟持を解放する時点以前の所定時間前までの所定期間となっていればよい。すなわち、シール体２４,２４の筒状フィルム１０を挟持するタイミングに合わせた適時から筒状フィルム１０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。また、一対のシール体２４,２４の１サイクル(実施例では一対のシール体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、筒状フィルム１０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)が前述のように筒状フィルム１０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が１サイクルする間に、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。 The period when the sealing bodies 24, 24 sandwich the tubular film 10 and move to the downstream side in the conveying direction is lower than the conveying speed of the conveying conveyor 20 (second speed V ₂ ). It suffices if the predetermined period is from a predetermined time after the time when the clip is held to a predetermined time before the time when the holding is released. That is, it is only necessary to be from the time when it is timed according to the timing of sandwiching the tubular film 10 of the sealing bodies 24, 24 to the timely time when it is timed to release the sandwiching of the tubular film 10. In addition, the turning speed of one cycle of the pair of seal bodies 24, 24 (the period in which the pair of seal bodies 24, 24 turns from the meshing state to the next meshing state) holds the tubular film 10. Thus, 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 tubular film 10 as described above, and in the remaining swivel operation range. The variable speed motor 56 is driven and controlled so that the seal bodies 24 and 24 rotate at a speed at which one cycle of rotation can be completed in relation to the packaging speed. That is, it is set so that the turning speed of the seal bodies 24, 24 can be changed during one cycle of the seal bodies 24, 24.

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.

前記筒状フィルム１０は、包装速度(単位時間当りの包装個数)と一包装するのに要するフィルム長さとによって定まるフィルム搬送速度である所定の搬送速度(第１速度Ｖ₁)でその搬送方向下流側へ連続搬送されるよう前記送りローラ１７,１７を駆動する可変速モータ５０が駆動制御される。そして、前記搬送コンベヤ２０を駆動する前記変速モータ５２が速度制御されて、搬送コンベヤ２０の搬送速度が前記送りローラ１７,１７による筒状フィルム１０の搬送速度(第１速度Ｖ₁)と同じ速度に設定されて、筒状フィルム１０を該筒状フィルム１０内に収容された物品４０と共に搬送方向下流側へ搬送する。 The cylindrical film 10 is downstream in the transport direction at a predetermined transport speed (first speed V ₁ ) that is a film transport speed determined by the packaging speed (the number of packages per unit time) and the film length required for one packaging. The variable speed motor 50 for driving the feed rollers 17 and 17 is controlled so as to be continuously conveyed to the side. Then, the speed of the speed change motor 52 that drives the transport conveyor 20 is controlled, and the transport speed of the transport conveyor 20 is the same as the transport speed (first speed V ₁ ) of the tubular film 10 by the feed rollers 17 and 17. The cylindrical film 10 is conveyed to the downstream side in the conveying direction together with the article 40 accommodated in the cylindrical film 10.

また、前記排出コンベヤ２２は、前記可変速モータ５４を駆動制御することで、前記一対のシール体２４,２４の動作位置と筒状フィルム１０内の物品４０の搬送位置とに応じて搬送速度を変速し得るよう設定されている。具体的には、前記排出コンベヤ２２は、前記筒状フィルム１０内の物品４０が搬送コンベヤ２０から排出コンベヤ２２へ送り込まれるタイミングに合わせて、前記筒状フィルム１０の搬送速度と同速(第１速度Ｖ₁)に設定されるよう前記可変速モータ５４が駆動制御される(図２(a)参照)。ここで、前述した如く、筒状フィルム１０の搬送速度と前記搬送コンベヤ２０の搬送速度とは同じ速度(第１速度Ｖ₁)に設定されるので、搬送コンベヤ２０と排出コンベヤ２２とは同じ搬送速度となるよう設定される。 Further, the discharge conveyor 22 drives and controls the variable speed motor 54, so that the discharge speed is adjusted according to the operation position of the pair of seal bodies 24, 24 and the transfer position of the article 40 in the tubular film 10. It is set to be able to shift. Specifically, the discharge conveyor 22 has the same speed (the first speed) as the conveyance speed of the tubular film 10 in accordance with the timing when the article 40 in the tubular film 10 is sent from the conveyance conveyor 20 to the discharge conveyor 22. The variable speed motor 54 is controlled to be set to the speed V ₁ ) (see FIG. 2A). Here, as described above, since the conveyance speed of the tubular film 10 and the conveyance speed of the conveyance conveyor 20 are set to the same speed (first speed V ₁ ), the conveyance conveyor 20 and the discharge conveyor 22 are the same conveyance. Set to be speed.

そして、前記一対のシール体２４,２４が筒状フィルム１０を挟持するタイミングに合わせて、前記一対のシール体２４,２４の噛合時における筒状フィルム１０の搬送方向下流側への移動速度(第２速度Ｖ₂)と同じ速度まで徐々に減速するよう排出コンベヤ２２の搬送速度が変速される。すなわち、筒状フィルム１０内の物品４０が前記搬送コンベヤ２０から排出コンベヤ２２に送り込まれるタイミングでは、一対のシール体２４,２４が相互に最も離間した旋回位置(図２(a)参照)となっており、この位置から一対のシール体２４,２４が筒状フィルム１０を挟持するまでの間において、前記排出コンベヤ２２の搬送速度が、筒状フィルム１０の搬送速度(第１速度Ｖ₁)と同じ速度からシール体２４,２４の噛合時における筒状フィルム１０の搬送方向下流側に向けた移動速度(第２速度Ｖ₂)と同じ速度になるまで徐々に減速する。従って、筒状フィルム１０がシール体２４,２４によって絞り込まれて挟持されるまでに、排出コンベヤ２２に載置されて搬送される搬送方向下流側の物品４０と、搬送コンベヤ２０に載置されて搬送される上流側の物品４０との間に速度差が生じて、シール体２４,２４での筒状フィルム１０の絞り込みに際して、筒状フィルム１０に適度な張りを与えかつ排出コンベヤ２２によって無理に搬送方向下流側に引っ張ることなく絞り込みが許容される。また、シール後において一対のシール体２４,２４が筒状フィルム１０の挟持を解放するタイミングに合わせて、排出コンベヤ２２が前記筒状フィルム１０の搬送速度(第１速度Ｖ₁)より高速に設定された速度(第３速度Ｖ₃)まで加速しているように排出コンベヤ２２の搬送速度が変速されるよう設定されている(図２(c)参照)。 Then, in accordance with the timing at which the pair of seal bodies 24, 24 sandwich the tubular film 10, the moving speed of the tubular film 10 to the downstream side in the transport direction (first time) when the pair of seal bodies 24, 24 are engaged. The conveying speed of the discharge conveyor 22 is changed so as to gradually decelerate to the same speed as 2 speed V ₂ ). That is, at the timing when the article 40 in the tubular film 10 is sent from the transport conveyor 20 to the discharge conveyor 22, the pair of seal bodies 24, 24 are in the swivel positions that are the most separated from each other (see FIG. 2 (a)). From this position until the pair of seal bodies 24, 24 sandwich the tubular film 10, the conveying speed of the discharge conveyor 22 is equal to the conveying speed of the tubular film 10 (first speed V ₁ ). The speed is gradually reduced from the same speed until the speed becomes equal to the moving speed (second speed V ₂ ) toward the downstream side in the transport direction of the tubular film 10 when the sealing bodies 24, 24 are engaged. Therefore, before the tubular film 10 is squeezed and sandwiched by the seal bodies 24, 24, it is placed on the discharge conveyor 22 and conveyed on the downstream side in the conveyance direction and the conveyance conveyor 20. A speed difference occurs between the upstream article 40 being conveyed, and when the tubular film 10 is narrowed down by the seal bodies 24, 24, the tubular film 10 is appropriately tensioned and forced by the discharge conveyor 22. Narrowing is allowed without pulling downstream in the transport direction. In addition, the discharge conveyor 22 is set at a higher speed than the conveyance speed (first speed V ₁ ) of the tubular film 10 in accordance with the timing at which the pair of sealing bodies 24, 24 release the sandwich of the tubular film 10 after sealing. The conveying speed of the discharge conveyor 22 is set so as to be shifted so as to accelerate to the set speed (third speed V ₃ ) (see FIG. 2C).

すなわち、排出コンベヤ２２の搬送速度は、筒状フィルム１０内の物品４０の搬送位置と前記一対のシール体２４,２４の旋回動作位置とに応じて、筒状フィルム１０の搬送速度(第１速度Ｖ₁)と同じ速度から該速度より高速に設定された速度(第３速度Ｖ₃)までの速度範囲で変速するよう可変速モータ５４が制御される。なお、搬送コンベヤ２０および排出コンベヤ２２の搬送速度とは、該コンベヤ２０,２２自体の走行速度に限らず、包装材１０,３０に収容された物品４０が移動する実質的な移動速度を含む。 That is, the transport speed of the discharge conveyor 22 depends on the transport position of the article 40 in the tubular film 10 and the swivel operation position of the pair of seal bodies 24, 24 (first speed). The variable speed motor 54 is controlled to shift within a speed range from the same speed as V ₁ ) to a speed set higher than the speed (third speed V ₃ ). In addition, the conveyance speed of the conveyance conveyor 20 and the discharge conveyor 22 is not limited to the traveling speed of the conveyors 20 and 22 itself, but includes a substantial movement speed at which the articles 40 accommodated in the packaging materials 10 and 30 move.

〔実施例１の作用〕
次に前述した実施例１に係る横シール装置の作用につき説明する。 [Operation of Example 1]
Next, the operation of the lateral seal device according to the first embodiment will be described.

製袋手段１２により成形された筒状フィルム１０は、長手方向の重合端縁部１０ａが前記加熱ローラ１６,１６により挟持されて縦シールが施され、その重合端縁部１０ａが送りローラ１７,１７に挟持されて、内部に収容した物品４０と共に搬送方向下流側の前記搬送コンベヤ２０に受け渡されて引続き下流側に搬送される。ここで、筒状フィルム１０の搬送速度は、包装速度(単位時間当りの包装個数)と一包装するのに要するフィルム長さとによって定まる所定のフィルム搬送速度(第１速度Ｖ₁)に設定され、それに従って前記送りローラ１７,１７で筒状フィルム１０を挟持して搬送する搬送速度と前記搬送コンベヤ２０の搬送速度とが同じ速度となるよう可変速モータ５０と変速モータ５２とが駆動制御される。 The cylindrical film 10 formed by the bag making means 12 has a longitudinal overlapping edge portion 10a sandwiched between the heating rollers 16 and 16 so as to be vertically sealed, and the overlapping edge portion 10a is fed to the feed roller 17, 17, and is transferred to the transport conveyor 20 on the downstream side in the transport direction together with the article 40 accommodated therein, and is subsequently transported downstream. Here, the conveyance speed of the tubular film 10 is set to a predetermined film conveyance speed (first speed V ₁ ) determined by the packaging speed (the number of packages per unit time) and the film length required for one packaging, Accordingly, the variable speed motor 50 and the transmission motor 52 are driven and controlled so that the transport speed for sandwiching and transporting the tubular film 10 by the feed rollers 17 and 17 and the transport speed of the transport conveyor 20 are the same. .

前記一対のシール体２４,２４は、前記可変速モータ５６により駆動されて、旋回運動により相互に近接して筒状フィルム１０を絞り込んで挟持する。筒状フィルム１０を挟持した一対のシール体２４,２４は、筒状フィルム１０の搬送に伴ってその搬送方向下流側に水平移動し、これにより筒状フィルム１０がフィルム搬送方向に隣り合う物品４０,４０の間において加熱シールされると共に切断される。 The pair of seal bodies 24, 24 are driven by the variable speed motor 56 and squeeze and hold the tubular film 10 close to each other by a turning motion. The pair of seal bodies 24, 24 sandwiching the tubular film 10 moves horizontally downstream in the transport direction as the tubular film 10 is transported, whereby the article 40 in which the tubular film 10 is adjacent in the film transport direction. , 40 is heat sealed and cut.

ここで、筒状フィルム１０内の物品４０が搬送コンベヤ２０から排出コンベヤ２２に送り込まれる際には、該排出コンベヤ２２の搬送速度は、筒状フィルム１０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により駆動される搬送コンベヤ２０の搬送速度と同じ速度となるよう可変速モータ５４が駆動制御される。すなわち、筒状フィルム１０内の物品４０が排出コンベヤ２２に送り込まれる際に筒状フィルム１０と排出コンベヤ２２の夫々の搬送速度との間に速度差がないから、受け渡し時における筒状フィルム１０と物品４０の姿勢の乱れや位置ずれが防止できる。 Here, when the article 40 in the tubular film 10 is sent from the transport conveyor 20 to the discharge conveyor 22, the transport speed of the discharge conveyor 22 is the transport speed of the tubular film 10 (first speed V ₁ ). The variable speed motor 54 is driven and controlled so as to have the same speed as the transport speed of the transport conveyor 20 set at the same speed and driven by the speed change motor 52. That is, when the article 40 in the tubular film 10 is sent to the discharge conveyor 22, there is no difference in speed between the tubular film 10 and the respective conveying speeds of the discharge conveyor 22. It is possible to prevent the posture of the article 40 from being disturbed or displaced.

また、前記一対のシール体２４,２４が筒状フィルム１０を挟持して筒状フィルム１０の搬送方向下流側に向けて移動する速度は、該シール体２４,２４より上流側に位置する筒状フィルム１０(物品４０)が前記搬送コンベヤ２０や送りローラ１７,１７により搬送される搬送速度(第１速度Ｖ₁)より低速となる速度(第２速度Ｖ₂)に設定されるよう前記変速モータ５２と可変速モータ５６との夫々が駆動制御されると共に、前記一対のシール体２４,２４が筒状フィルム１０を挟持するタイミングとなるシール体２４,２４の旋回動作位置に合わせて、排出コンベヤ２２による物品４０の搬送速度は、シール体２４,２４の筒状フィルム１０の搬送方向下流側への移動速度(第２速度Ｖ₂)と同じ速度となるよう前記可変速モータ５４が徐々に駆動制御される。このため、一対のシール体２４,２４が筒状フィルム１０を挟持してから筒状フィルム１０の挟持を解放する旋回動作位置までの筒状フィルム１０の搬送速度に対する排出コンベヤ２２の搬送速度は、送りローラ１７,１７並びに搬送コンベヤ２０で搬送される筒状フィルム１０内の物品４０の前進より遅くなり、シール体２４,２４の前後に隣接する物品４０,４０間での筒状フィルム１０には一対のシール体２４,２４による絞り量に相当する弛みが生ずる。この弛み量は、上下のシール体２４,２４で筒状フィルム１０を絞り込んで挟持する際に筒状フィルム１０が排出コンベヤ２２によって無理に引っ張られず、かつ弛んでしまうことのない程度に適度な張りを与えつつ熱シールすることができる値とすることができ、シール時におけるシール皺の発生を抑制して良好なシールを施すことが可能となる。また、シール体２４,２４が前記筒状フィルム１０を挟持して加熱シールする前に筒状フィルム１０を内側へ折り込んでガセット形成するものにあっては、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、筒状フィルム１０を挟持してエアを抜く処理を行なう場合においても、筒状フィルム１０が搬送方向下流側に引っ張られることなく良好な処理が可能である。 In addition, the speed at which the pair of seal bodies 24, 24 move toward the downstream side in the transport direction of the tubular film 10 with the tubular film 10 interposed therebetween is a tubular shape located upstream from the seal bodies 24, 24. The speed change motor is set so that the film 10 (article 40) is set to a speed (second speed V ₂ ) that is lower than the transport speed (first speed V ₁ ) transported by the transport conveyor 20 and the feed rollers 17 and 17. 52 and the variable speed motor 56 are driven and controlled, and the discharge conveyor is adjusted in accordance with the swiveling operation position of the seal bodies 24, 24 at which the pair of seal bodies 24, 24 sandwich the cylindrical film 10. The variable-speed motor 54 is gradually driven so that the conveying speed of the article 40 by 22 is the same as the moving speed (second speed V ₂ ) of the sealing bodies 24, 24 to the downstream side in the conveying direction of the tubular film 10. control It is. For this reason, the conveyance speed of the discharge conveyor 22 with respect to the conveyance speed of the cylindrical film 10 from the pair of seal bodies 24, 24 holding the cylindrical film 10 to the turning operation position for releasing the holding of the cylindrical film 10 is: The cylindrical film 10 between the articles 40 and 40 adjacent to the front and rear of the seal bodies 24 and 24 is slower than the advance of the article 40 in the cylindrical film 10 conveyed by the feed rollers 17 and 17 and the conveyor 20. Looseness corresponding to the amount of restriction by the pair of seal bodies 24, 24 occurs. This amount of slack is moderate enough to prevent the tubular film 10 from being forcibly pulled by the discharge conveyor 22 and being loosened when the tubular film 10 is squeezed and sandwiched between the upper and lower sealing bodies 24, 24. It is possible to achieve a value that can be heat-sealed while giving a good seal, and it is possible to suppress the generation of seal wrinkles during sealing and provide a good seal. Further, in the case where the sealing bodies 24, 24 fold the tubular film 10 inward before the cylindrical film 10 is sandwiched and heat-sealed to form a gusset, the amount of folding of the film and the variation in the folded shape are It can be suppressed and a good gusset can be formed. Furthermore, even in the case where the process of removing air by holding the tubular film 10 is performed, the tubular film 10 can be satisfactorily processed without being pulled downstream in the transport direction.

そして、前記シール体２４,２４で前記筒状フィルム１０を挟持してシールする際に、前記排出コンベヤ２２は、シール体２４,２４における筒状フィルム１０の搬送方向下流側への移動速度(第２速度Ｖ₂)と同じ速度で筒状フィルム１０内の物品４０を搬送する搬送速度に設定されるよう前記可変速モータ５４が駆動制御される。これによりシール時においても搬送方向下流側へ無理な引張力が作用することなく安定したシールを行なうことができる。そして、シールが完了して前記一対のシール体２４,２４が筒状フィルム１０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による物品４０の搬送速度を筒状フィルム１０の搬送速度(第１速度Ｖ₁)より高速な速度(第３速度Ｖ₃)に設定されるよう前記可変速モータ５４が駆動制御されるから、該シール体２４,２４によるシール時に排出コンベヤ２２による搬送速度を低下させたとしても、シールされて最終的に得られる袋詰包装体４２は、その上流側物品４０と確実に切り離された状態で搬出することができ、シール加工の加工効率低下を招来することはない。 When the tubular film 10 is sandwiched and sealed by the seal bodies 24, 24, the discharge conveyor 22 moves the downstream speed of the tubular film 10 in the transport direction of the tubular film 10 (first step). The variable speed motor 54 is driven and controlled so as to be set to a transport speed for transporting the article 40 in the tubular film 10 at the same speed as 2 speed V ₂ ). As a result, even during sealing, stable sealing can be performed without excessive tensile force acting downstream in the transport direction. Then, the conveyance speed of the article 40 by the discharge conveyor 22 is set to the conveyance speed of the cylindrical film 10 (the first speed) in accordance with the timing when the sealing is completed and the pair of seal bodies 24, 24 release the sandwich of the cylindrical film 10. Since the variable speed motor 54 is driven and controlled so as to be set to a speed higher than the first speed V ₁ ) (the third speed V ₃ ), the transport speed by the discharge conveyor 22 is lowered at the time of sealing by the seal bodies 24, 24. Even if it is made, the packaged package 42 finally obtained after being sealed can be carried out in a state of being reliably separated from the upstream article 40, and this leads to a decrease in the processing efficiency of the sealing process. Absent.

実施例１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、筒状フィルム１０からなる包装材１０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への搬送速度を包装材１０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で包装材１０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が包装材１０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による包装材１０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が包装材１０の挟持を解放するのに合わせて、排出コンベヤ２２の搬送速度を包装材１０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が包装材１０の挟持を解放した後の所定時間後までの間に包装材１０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。 Oite to Example 1, with respect to the speed control of the transport speed of the discharge conveyor 22, to fit to the article 40 of the tubular film 1 0 or Ranaru packaging 1 in 0 is fed to the discharge conveyor 22, discharge conveyor 22 As for the time when the conveying speed to the same speed as the conveying speed of the packaging material 10 is reached, a predetermined time after the discharge conveyor 22 is decelerated and approximately half of the length of the article 40 is sent to the discharge conveyor 22 is reached. The variable speed motor 54 may be set so as to be driven and controlled so that the speed is the same. In addition, the conveyance speed of the discharge conveyor 22 is the same as the moving speed at which the seal bodies 24, 24 move downstream in the conveyance direction of the packaging material 10 as the packaging material 10 is sandwiched by the sealing bodies 24, 24. About the time to decelerate to a speed, it is variable speed so that it may become the same speed as the moving speed of the said pair of seal body 24,24 after the packaging material 10 is clamped by the seal body 24,24 until after the predetermined time. Any motor may be used as long as the motor 54 is decelerated and controlled at a predetermined time. Further, the seal member 24, 24 to fit to release the holding of the packaging material 1 0, the timing for setting the conveying speed of the discharge conveyor 22 faster than the conveying speed of the packaging material 1 0 is a pair of sealing members 24 , 24 so that the variable speed motor 54 is accelerated and controlled at a predetermined time so that the speed becomes higher than the conveying speed of the packaging material 10 until a predetermined time after the nipping of the packaging material 10 is released. It only has to be.

〔変更例〕
なお、本発明に係る横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を筒状フィルム１０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が筒状フィルム１０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、筒状フィルム１０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、筒状フィルム１０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は筒状フィルム１０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の両側部から筒状フィルム１０と共に挟み込んで搬送し得るコンベヤや、搬送路の上方から筒状フィルム１０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筒状フィルム１０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]
As the transverse sealing apparatus according to the present invention is not limited to those of the real施例described above, various modifications are possible.
1 . In the embodiment, the configuration in which the sealing bodies 24 and 24 are disposed so as to be opposed to each other up and down across the conveyance path of the tubular film 10 is shown. It can also be arranged.
2 . Speed at which the seal member 24, 24 is moved in the conveying direction downstream side by sandwiching the tubular film 1 0 (second speed V ₂₎ is not limited to the constant speed, the shift range of the predetermined width is needed It may be provided. That is, the moving speed (second speed V ₂₎ of the seal body 24, 24 when moving downstream in the conveying direction by sandwiching the tubular film 1 0, the conveyance speed of the tubular film 1 0 (first speed V ₁ ) It can be set to shift 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 tubular film 10 , but are not limited to such a configuration. For example, a conveyor that can be sandwiched and conveyed with the tubular film 10 from both sides of the article 40, a system that conveys the article 40 accommodated in the tubular film 10 from above the conveyance path, or a cylinder by air suction. A belt conveyor that travels while holding the film 10 and other various conveyors can be appropriately employed.
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 Laid-Open Nos. 2004-352251 and 2006. As disclosed in US Pat. No. 1,168,823, a structure in which the seal bodies 24, 24 are driven by two motors that operate separately in horizontal movement and vertical movement, or as disclosed in Japanese Patent No. 3780450, A method of performing the horizontal movement and the vertical movement in combination may be used.

本発明の実施例１に係る横型製袋充填機の横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 horizontal sealing apparatus of the horizontal type bag making filling machine which concerns on Example 1 of this invention. 実施例１に係る横型製袋充填機の横シール装置の動作を示す説明図である。 It is explanatory drawing which shows operation | movement of the horizontal sealing apparatus of the horizontal type bag making filling machine which concerns on Example 1. FIG .

符号の説明Explanation of symbols

１０筒状フィルム，２０搬送コンベヤ，２２排出コンベヤ
２４シール体，４０物品，４２袋詰包装体，５４可変速モータ 10 tubular fill arm, 20 conveyor, 22 discharge conveyor 24 sealing member, 4 0 article 42 bagging packaging, 54 variable speed motor

Claims

内方に物品(40)を収容して搬送される筒状フィルム(10)を、前記各物品間において一対のシール体(24)で挟持した状態で該シール体(24)を筒状フィルム(10)の搬送方向へ移動しつつ、該筒状フィルム(10)を横シール・切断して袋詰包装体(42)を得るよう構成した横型製袋充填機の横シール装置において、
前記筒状フィルム(10)の搬送速度に応じた速度(V ₁ )で前記物品(40)を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、
前記シール体(24)は、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筒状フィルム(10)を挟持してから相互に離間するまでの所定期間において、前記搬送コンベヤ(20)の搬送速度(V ₁ )より低速で筒状フィルム(10)の搬送方向下流側へ移動され、
前記物品(40)が搬送コンベヤ(20)から排出コンベヤ(22)へ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(V ₁ )と同じ搬送速度とし、前記シール体(24)が前記各物品間においてその物品高さに応じて筒状フィルム(10)を絞り込んで挟持するのに合わせて、その絞り量に相当する弛みが生ずるように排出コンベヤ(22)を減速し、前記シール体(24)が筒状フィルム(10)を挟持して搬送方向へ移動する移動速度(V ₂ )と同じ搬送速度で排出コンベヤ(22)を走行させた後、前記シール体(24)で挟持した筒状フィルム(10)を解放するのに合わせて、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(V ₁ )より高速の速度(V ₃ )に設定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
ことを特徴とする横シール装置。 The tubular film which is conveyed to accommodate an article (40) to the inner person (10), wherein the seal body in a state of being sandwiched by a pair of sealing members (24) between the article (24) of the tubular film ( In the horizontal sealing device of the horizontal bag making and filling machine configured to obtain the packaged package (42) by horizontally sealing and cutting the tubular film (10) while moving in the conveying direction of 10) ,
A transport conveyor (20) for transporting the article (40) at a speed (V ₁ ) according to the transport speed of the tubular film (10) ;
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),
The sealing body (24) is a predetermined period from when the tubular film (10) is sandwiched between the opposed end portions of the transport conveyor (20) and the discharge conveyor (22) until they are separated from each other. The cylindrical film (10) is moved downstream in the conveying direction at a lower speed than the conveying speed (V ₁ ) of the conveying conveyor (20) ,
Wherein the article (40) of the conveying speed (V ₁₎ and the same conveying speed of the conveyor the discharge conveyor (22) to fit in is fed from the conveyor (20) to the discharge conveyor (22) (20), As the sealing body (24) squeezes and clamps the cylindrical film (10) between the articles according to the height of the articles, the discharge conveyor (22 ) , And the discharge body (22) travels at the same transport speed as the moving speed (V ₂ ) in which the seal body (24) sandwiches the tubular film (10) and moves in the transport direction, When the cylindrical film (10) sandwiched between the sealing bodies (24) is released, the transport speed of the discharge conveyor (22) is set to a speed (V ₃ ) higher than the transport speed (V ₁ ) of the transport conveyor (20). ) the lateral sealing apparatus characterized in that the configuration for driving and controlling the variable speed motor (54) to set.

前記排出コンベヤ(22)の搬送速度は、筒状フィルム(10)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)を駆動制御する請求項１記載の横シール装置。 The conveyance speed of the discharge conveyor (22) is such that approximately half of the length of the article (40) accommodated in the tubular film (10 ) is sent to the discharge conveyor (22 ). transverse sealing device according to claim 1 for driving and controlling the variable speed motor (54) to decelerate to the transfer speed (V _1).