JP6800574B2

JP6800574B2 - Pillow wrapping machine

Info

Publication number: JP6800574B2
Application number: JP2015211735A
Authority: JP
Inventors: 悠一大森; 守坂田; 輝展松本
Original assignee: Omori Machinery Co Ltd
Current assignee: Omori Machinery Co Ltd
Priority date: 2015-10-28
Filing date: 2015-10-28
Publication date: 2020-12-16
Anticipated expiration: 2035-10-28
Also published as: JP2017081598A

Description

本発明はセンターシール装置を有するピロー包装機に関するものである。 The present invention relates to a pillow packaging machine having a center seal device.

ピロー包装機とは包装機の一種であり、主にフィルム供給装置、搬送装置、製袋機、センターシール装置、エンドシール装置から構成されている。被包装物は例えばベルトコンベヤ等の搬送装置により搬送され、包装用の帯状フィルムはフィルム供給装置の原反ロールから供給される。製袋機は被包装物が順次搬送されるのに合わせてフィルム供給装置から供給される帯状フィルムを筒状に製袋する。次いで製袋機の下流側に配置されるセンターシール装置は筒状フィルムの両側端縁部を重ね合わせたフィルム重合端をセンターシーラによって加圧、加熱（熱シール）する。そしてエンドシール装置は、被包装物の長さに合わせて被包装物が存在しない筒状フィルムをフィルム幅方向にシールし、カットすることで個別包装を完成させる。 A pillow wrapping machine is a kind of wrapping machine, and is mainly composed of a film supply device, a transfer device, a bag making machine, a center seal device, and an end seal device. The object to be packaged is transported by a transport device such as a belt conveyor, and the strip-shaped film for packaging is supplied from the original roll of the film supply device. The bag-making machine manufactures a strip-shaped film supplied from the film supply device into a tubular shape as the objects to be packaged are sequentially conveyed. Next, the center seal device arranged on the downstream side of the bag making machine pressurizes and heats (heat seals) the film polymerized end in which the both side edge portions of the tubular film are overlapped by the center sealer. Then, the end sealing device seals the tubular film in which the object to be packaged does not exist in the film width direction according to the length of the object to be packaged, and cuts the film to complete the individual packaging.

特開２０１０−１７９９５５JP 2010-179955 特開２００５−２８９４６１JP-A-2005-289461

センターシール装置は、筒状フィルム本体部分が垂直下方向に突出した形で形成されるフィルム重合端を、左右からセンターシーラで挟み込んで加圧するとともに熱シールしてセンターシール部を形成する。フィルムが腰の無い材質であるとフィルム面は弛むことが多く、弛みを防ぐためにフィルムへ張力を与える等の手法を用いる。しかしセンターシーラからの輻射熱によりフィルム搬送面の温度が上昇すると、張力を与えていても熱変性によりフィルムに皺や弛みが生じやすく搬送不良の原因となる。 The center seal device forms a center seal portion by sandwiching the film polymerized end formed by the tubular film main body portion protruding vertically downward with the center sealer from the left and right to pressurize and heat seal the film. If the film is made of a loose material, the film surface often loosens, and a method such as applying tension to the film is used to prevent the film from loosening. However, when the temperature of the film transport surface rises due to the radiant heat from the center sealer, wrinkles and slacks are likely to occur in the film due to thermal denaturation even if tension is applied, which causes transport failure.

特に空袋防止制御時やメンテナンスなどのために停止待機していた筒状フィルムの搬送が再開された際には、センターシール装置のフィルム搬送面で停止していた筒状フィルムが過剰に加熱されることで熱変性して搬送面に付着してしまい、搬送されずに後続の被包装物が詰まってしまうという搬送不良が発生し易い。この搬送不良は、フィルムが熱に敏感な材質（たとえばポリエチレン等）である場合や、フィルム厚さが４０μｍ以下の場合や、フィルムの外面に印刷がされている場合、特に顕著となる。そもそもフィルムはフィルム搬送面上での滑りが悪く、湿度の高い場合には滑りの悪さが一層顕著になり搬送不良を生じやすい。 In particular, when the transport of the tubular film that had been waiting to be stopped due to empty bag prevention control or maintenance is resumed, the tubular film that was stopped on the film transport surface of the center seal device is overheated. As a result, it is thermally denatured and adheres to the transport surface, and the subsequent object to be packaged is clogged without being transported, which is likely to cause a transport defect. This transport defect becomes particularly remarkable when the film is made of a heat-sensitive material (for example, polyethylene or the like), when the film thickness is 40 μm or less, or when the outer surface of the film is printed. In the first place, the film has poor slippage on the film transport surface, and when the humidity is high, the slipperiness becomes more remarkable and transport failure is likely to occur.

センターシール装置においてセンターシーラのシール領域におけるフィルム搬送面の温度が上昇することを抑えるため、従来は冷却用エアを搬送面に供給する、搬送面を構成する台の部分に冷却水を流す、などの方法が提案されている（特許文献２）。しかしこれらの方法はランニングコストや衛生面で問題が多く、また構造が複雑になってしまう欠点があった。 In order to prevent the temperature of the film transport surface in the seal area of the center sealer from rising in the center seal device, conventionally, cooling air is supplied to the transport surface, cooling water is flowed to the base portion that constitutes the transport surface, etc. (Patent Document 2). However, these methods have many problems in terms of running cost and hygiene, and have a drawback that the structure becomes complicated.

本発明は、斯かる実情に鑑み、フィルムが付着しにくく搬送不良が生じにくいピロー包装機を提供することを目的とする。 In view of such circumstances, an object of the present invention is to provide a pillow packaging machine in which a film is less likely to adhere and transport defects are less likely to occur.

本発明は、連続して供給される帯状フィルムを筒状に形成するとともに、前記帯状フィルムの両側端縁部を重ね合わせたフィルム重合端に対してシーラによって熱シールして筒状フィルムとするセンターシール装置を有するピロー包装機であって、前記シーラと前記筒状フィルムの間に配置されてフィルム搬送面を形成する板状部材と、前記板状部材を支持する支持部材と、を備え、前記フィルム搬送面には前記フィルム重合端が通過する隙間が形成され、前記隙間は、前記板状部材が形成する第一の隙間と、前記支持部材が形成する第二の隙間からなり、前記第一の隙間の間隔は、前記第二の隙間の間隔より広く、前記フィルム搬送面における少なくとも前記シーラ近傍の領域であるシール領域にエンボスが形成されることを特徴とするピロー包装機である。

In the present invention, a continuously supplied strip-shaped film is formed into a tubular shape, and a center where both side edge portions of the strip-shaped film are overlapped and heat-sealed with a sealer to form a tubular film. A pillow packaging machine having a sealing device, comprising: a plate-shaped member arranged between the sealer and the tubular film to form a film transport surface, and a support member for supporting the plate-shaped member. A gap through which the film overlapping end passes is formed on the film transport surface, and the gap comprises a first gap formed by the plate-shaped member and a second gap formed by the support member. The pillow packaging machine is characterized in that the gap between the two gaps is wider than the gap between the second gaps, and embossing is formed in a seal region which is at least a region near the sealer on the film transport surface.

本発明によれば、フィルム搬送面における少なくともシーラのシール領域にエンボスを形成することで筒状フィルムとフィルム搬送面の間の接触面積を小さくして、互いの付着可能性を下げ、被包装物の搬送不良を生じにくくするという優れた効果を奏し得る。 According to the present invention, by forming embossing at least in the seal region of the sealer on the film transport surface, the contact area between the tubular film and the film transport surface is reduced, the possibility of mutual adhesion is reduced, and the packaged object is packaged. It is possible to achieve an excellent effect of making it difficult for poor transportation to occur.

本発明の第１実施形態のピロー包装機の全体概念図である。It is an overall conceptual diagram of the pillow packaging machine of 1st Embodiment of this invention. （ａ）は本発明の第１実施形態であるピロー包装機が備えるセンターシール装置の上面図であり、（ｂ）はそのＡ−Ａ矢視断面図である。(A) is a top view of the center seal device included in the pillow wrapping machine according to the first embodiment of the present invention, and (b) is a cross-sectional view taken along the line AA. （ａ）、（ｂ）、（ｃ）、（ｄ）、（ｅ）はセンターシール装置の要部であるフィルム搬送面のエンボスの拡大図であり、（ｆ）は（ｃ）のエンボスのＢ−Ｂ矢視断面図である。(A), (b), (c), (d), and (e) are enlarged views of the embossing of the film transport surface, which is the main part of the center sealing device, and (f) is the embossing B of (c). -B is a cross-sectional view taken along the line. 同センターシール装置の要部を説明する搬送方向から視た断面図である。It is sectional drawing seen from the transport direction explaining the main part of the center seal apparatus. 同センターシール装置の変形例の搬送方向から視た断面図である。It is sectional drawing seen from the transport direction of the modification of the center seal device.

以下、本発明の実施の形態について添付図面を参照して説明する。ただし図１〜図５は発明を実施する形態の一例であって、図中で同一の符号を付した部分は同一又は類似の装置、部材等を表わす。
（１）実施形態の概要 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, FIGS. 1 to 5 are examples of embodiments in which the invention is carried out, and portions having the same reference numerals in the drawings represent the same or similar devices, members, and the like.
(1) Outline of the embodiment

本発明の実施形態では、フィルム搬送面においてセンターシール装置のシーラの近傍にエンボス加工を施すことで筒状フィルムとフィルム搬送面の接触面積を小さくし、シーラから筒状フィルムへの熱伝達を妨げ、筒状フィルムとフィルム搬送面の付着可能性や筒状フィルム自体の熱変性可能性を低減させることで、搬送不良が生じにくいピロー包装機を提供する。
（２）実施形態の詳細 In the embodiment of the present invention, the contact area between the tubular film and the film transport surface is reduced by embossing the vicinity of the sealer of the center seal device on the film transport surface, and heat transfer from the sealer to the tubular film is hindered. Provided is a pillow wrapping machine in which transport defects are less likely to occur by reducing the possibility of adhesion between the tubular film and the film transport surface and the possibility of heat modification of the tubular film itself.
(2) Details of the embodiment

図１は第１の実施形態に係るピロー包装機１の全体概念図である。なお、本図および以降の各図において、部材の大きさ、形状、厚みなどを適宜誇張して表現する。 FIG. 1 is an overall conceptual diagram of the pillow packaging machine 1 according to the first embodiment. In addition, in this figure and each subsequent drawing, the size, shape, thickness and the like of a member are exaggerated as appropriate.

図１に示されるピロー包装機１は、食品や日用品などの被包装物７をフィルムで順次包装するラインで使用される。このピロー包装機１は、フィンガーコンベア７０と、フィルム供給装置２と、センターシール装置３と、エンドシール装置４と、制御ユニット（図示省略）などを備えている。なお図１では上方から帯状フィルム１００が供給され、被包装物７を上から包み込んでセンターシールするいわゆる正ピロー包装機を図示している。 The pillow wrapping machine 1 shown in FIG. 1 is used in a line for sequentially wrapping objects 7 such as foods and daily necessities with a film. The pillow wrapping machine 1 includes a finger conveyor 70, a film supply device 2, a center seal device 3, an end seal device 4, a control unit (not shown), and the like. Note that FIG. 1 illustrates a so-called regular pillow wrapping machine in which the strip-shaped film 100 is supplied from above, and the object to be packaged 7 is wrapped from above and center-sealed.

これらピロー包装機１の各部は制御ユニットにより統括的に制御される。制御ユニットはＣＰＵ、ＲＡＭおよびＲＯＭなどから構成され、各種制御を実行する。ＣＰＵはいわゆる中央演算処理装置であり、各種プログラムが実行されて様々な機能を実現する。ＲＡＭはＣＰＵの作業領域、記憶領域として使用され、ＲＯＭはＣＰＵで実行されるオペレーティングシステムやプログラムを記憶する。 Each part of the pillow packaging machine 1 is collectively controlled by the control unit. The control unit is composed of a CPU, RAM, ROM, and the like, and executes various controls. The CPU is a so-called central processing unit, and various programs are executed to realize various functions. The RAM is used as a work area and a storage area of the CPU, and the ROM stores an operating system and a program executed by the CPU.

フィンガーコンベア７０は、フィンガーコンベア７０の下流側に配置される製袋機３５へ被包装物７を順次矢印方向に搬送する。具体的には多数の被包装物７を搬送する際、フィンガー８０でそれぞれの被包装物７を押送することで個々の被包装物７をコンベア上で等間隔に搬送する。 The finger conveyor 70 sequentially conveys the packaged object 7 to the bag making machine 35 arranged on the downstream side of the finger conveyor 70 in the direction of the arrow. Specifically, when a large number of objects to be packaged 7 are conveyed, the individual objects to be packaged 7 are conveyed at equal intervals on a conveyor by pushing the respective objects to be packaged 7 with the fingers 80.

フィルム供給装置２は、駆動モーター（図示省略）により回転速度を適宜制御しながら、フィルムを巻き取った原反ロール９０から所定の速度で帯状フィルム１００を製袋機３５に供給する。 The film supply device 2 supplies the strip-shaped film 100 to the bag making machine 35 at a predetermined speed from the original roll 90 around which the film is wound while appropriately controlling the rotation speed by a drive motor (not shown).

製袋機３５は、フィルム供給装置２から供給される帯状フィルム１００を、幅方向の両端縁が互いに重なるように筒状に製袋する。従って、筒状フィルム１１０は、帯状フィルム１００の両端縁が重なることで長手方向に延びるフィルム重合端を有する。また製袋器３５は、フィンガーコンベア７０から供給される被包装物３５を、製袋される筒状フィルム１１０に供給する。これにより、被包装物７は、筒状に製袋された筒状フィルム１００に包まれる。 The bag making machine 35 makes a tubular film 100 supplied from the film supply device 2 into a tubular shape so that both end edges in the width direction overlap each other. Therefore, the tubular film 110 has a film polymerization end extending in the longitudinal direction by overlapping both end edges of the strip film 100. Further, the bag making device 35 supplies the packaged object 35 supplied from the finger conveyor 70 to the tubular film 110 to be made into a bag. As a result, the object to be packaged 7 is wrapped in the tubular film 100 which is made into a tubular bag.

センターシール装置３は、製袋機３５の下流側に配置される。センターシール装置３はフィルム搬送面８の下側にセンターシーラ３０を備え、被包装物７を包んだ筒状フィルム１１０のフィルム重合端を加圧、熱シールする。センターシール装置３の下流側には移送コンベア４０と、移送コンベア４０の上方に配置された上側抑えベルト６０が配置され、センターシール装置３からエンドシール装置４へ筒状フィルム１１０で包装された被包装物７を移送する。 The center seal device 3 is arranged on the downstream side of the bag making machine 35. The center seal device 3 is provided with a center sealer 30 on the lower side of the film transport surface 8, and pressurizes and heat-seals the film-polymerized end of the tubular film 110 that wraps the object to be packaged 7. A transfer conveyor 40 and an upper holding belt 60 arranged above the transfer conveyor 40 are arranged on the downstream side of the center seal device 3, and the cover is wrapped with a tubular film 110 from the center seal device 3 to the end seal device 4. Transfer the package 7.

エンドシール装置４は被包装物７の長さに合わせて、被包装物７が存在しない領域の筒状フィルム１１０をフィルム幅方向に熱シールして封じ、カットすることで被包装物７の個別包装を完成させる。そして完成された個別包装はエンドシール装置４の下流側に設けられた搬出コンベア５０で搬出される。 The end-sealing device 4 heat-seals and seals the tubular film 110 in the region where the packaged object 7 does not exist in the film width direction to match the length of the packaged object 7, seals the film 110, and cuts the packaged object 7 individually. Complete the packaging. Then, the completed individual packaging is carried out by the carry-out conveyor 50 provided on the downstream side of the end sealing device 4.

図２でセンターシール装置３の構成を詳細に説明する。センターシール装置３は上板５とピンチローラ２７とセンターシーラ３０を備え、上板５の下にピンチローラ２７とセンターシーラ３０が配置される。上板５の上面であるフィルム搬送面８には図３で後述するようなエンボス加工を施す。ピンチローラ２７は筒状フィルムの両側端縁部を両側から挟み込んで搬送力を与える一対のローラであり、センターシーラ３０は、筒状フィルム１１０の両側端縁部を両側から挟み込んで加熱（熱シール）しながら搬送する一対のローラである。センターシール装置３は、一対の直方体状のセンターシーラ（バーシーラ）を備えたものでも良い。 The configuration of the center seal device 3 will be described in detail with reference to FIG. The center seal device 3 includes an upper plate 5, a pinch roller 27, and a center sealer 30, and the pinch roller 27 and the center sealer 30 are arranged under the upper plate 5. The film transport surface 8 which is the upper surface of the upper plate 5 is embossed as described later in FIG. The pinch roller 27 is a pair of rollers that sandwich both end edges of the tubular film from both sides to give a conveying force, and the center sealer 30 sandwiches both end edges of the tubular film 110 from both sides and heats (heat seal). ) A pair of rollers that convey while. The center seal device 3 may be provided with a pair of rectangular parallelepiped center sealers (ver sealers).

図２（ａ）はセンターシール装置３の上面図を示す。板状部材１０、１０と支持部材２０、２０は合掌構造をなす。具体的には一対の板状部材１０は、平面方向が水平となる状態で、隙間６を介して平行するように配設される。それぞれの板状部材１０の下側には、一対の支持部材２０が、平面方向が水平となる状態で、隙間６を介して平行するように配設される。隙間６はセンターシール装置３の搬送方向に伸びており、被包装物７を包んだ筒状フィルム１１０のフィルム重合端が通過・走行する。筒状フィルム１１０のフィルム重合端はフィルム搬送面８の下に設けられたセンターシーラ３０により熱シールされる。 FIG. 2A shows a top view of the center seal device 3. The plate-shaped members 10 and 10 and the support members 20 and 20 form a gassho structure. Specifically, the pair of plate-shaped members 10 are arranged so as to be parallel to each other through the gap 6 in a state where the plane direction is horizontal. On the lower side of each plate-shaped member 10, a pair of support members 20 are arranged so as to be parallel to each other through a gap 6 in a state where the plane direction is horizontal. The gap 6 extends in the transport direction of the center seal device 3, and the film-polymerized end of the tubular film 110 that wraps the object to be packaged 7 passes and runs. The film-polymerized end of the tubular film 110 is heat-sealed by a center sealer 30 provided under the film transport surface 8.

図２（ｂ）は、センターシール装置３の図２（ａ）におけるＡ−Ａ矢視断面図を示す。本実施形態では上板５は、上から下に向かって板状部材１０と支持部材２０の順番に積層される。板状部材１０、１０の隙間６Ａの間隔ａは、支持部材２０、２０が隙間６Ｂの間隔ｂより広く設けられる。両隙間６Ａ、６Ｂによってフィルム重合端が通過する隙間６が構成される。 FIG. 2B shows a cross-sectional view taken along the line AA in FIG. 2A of the center seal device 3. In the present embodiment, the upper plate 5 is laminated in the order of the plate-shaped member 10 and the support member 20 from top to bottom. The gap 6A between the plate-shaped members 10 and 10 is provided so that the support members 20 and 20 are wider than the gap b between the gaps 6B. Both gaps 6A and 6B form a gap 6 through which the film polymerization end passes.

間隔ａと間隔ｂは同じ広さであっても良いが、仮にａとｂが同じ広さであり、結果として両隙間６Ａ、６Ｂが構成する隙間６が単一の垂直面をなすと、筒状フィルム１１０は、フィルム搬送面８から隙間６に向かって直角に折れ曲がって、センターシーラ４０に向かって垂れ下がることになる。即ち、筒状フィルム１１０の周方向の距離は、少なくとも被包装物７の全周寸法と、板状部材１０の厚みと支持部材２０の厚みの合算値と、更に、被包装物７と筒状フィルム１１０の余裕隙間分と、を単純に加算した長さが必要となる。これに対して本実施形態で示す構造にすれば、板状部材１０から支持部材２０に向かって斜めにフィルムが導入され得る（図４参照）。結果、フィルム重合端に向かって垂れ下がる筒状フィルムの長さが短くなり、押圧面９でシールされずに筒状本体部側に残される無駄部分が少なくなることで、使用するフィルム量を削減できる。このような構造は被包装物７をタイトに包装したいときに特に有効である。 The interval a and the interval b may be the same width, but if a and b are the same width, and as a result, the gap 6 formed by both gaps 6A and 6B forms a single vertical surface, the cylinder The shape film 110 bends at a right angle from the film transport surface 8 toward the gap 6, and hangs down toward the center sealer 40. That is, the circumferential distance of the tubular film 110 is at least the total circumference of the packaged object 7, the total thickness of the plate-shaped member 10 and the thickness of the support member 20, and the packaged object 7 and the tubular shape. A length obtained by simply adding the margin gap of the film 110 is required. On the other hand, according to the structure shown in the present embodiment, the film can be introduced obliquely from the plate-shaped member 10 toward the support member 20 (see FIG. 4). As a result, the length of the tubular film hanging toward the film polymerization end is shortened, and the amount of waste film left on the tubular main body side without being sealed by the pressing surface 9 is reduced, so that the amount of film used can be reduced. .. Such a structure is particularly effective when it is desired to tightly package the object to be packaged 7.

板状部材１０と支持部材２０はねじ止めで固定しても、接着剤等で固定しても良い。支持部材２０、又は板状部材１０の少なくとも一方、又はその両方に位置決め手段を設けて着脱可能にすると、板状部材１０が交換可能、清掃可能となりさらに好ましい。 The plate-shaped member 10 and the support member 20 may be fixed by screwing or may be fixed by an adhesive or the like. It is more preferable that the support member 20, at least one of the plate-shaped members 10, or both of them is provided with positioning means so that the plate-shaped members 10 can be replaced and cleaned.

エンボスをプレス加工で作製する場合、エンボス凸部２１０の大きさを小さくするためには、加工対象の板厚は薄いことが好ましい。したがってエンボス凸部２１０を小さくするために板状部材１０を薄くする場合にも、板状部材１０で形成されるフィルム搬送面８の剛性を保ち、被包装物の搬送に支障がでないようにするためには、板状部材１０を支持部材２０で支持する構造が好適である。板状部材１０は、エンボス加工を施すことによってたわみ強度が増し、上板全体を薄くできる。 When embossing is produced by press working, it is preferable that the plate thickness to be processed is thin in order to reduce the size of the embossed convex portion 210. Therefore, even when the plate-shaped member 10 is thinned in order to reduce the embossed convex portion 210, the rigidity of the film transport surface 8 formed by the plate-shaped member 10 is maintained so as not to hinder the transport of the packaged object. For this purpose, a structure in which the plate-shaped member 10 is supported by the support member 20 is preferable. By embossing the plate-shaped member 10, the bending strength is increased, and the entire upper plate can be made thinner.

なお図２（ａ）で支持部材２０が板状構造である例を示したが、補強バーを離散的に備えて板状部材１０を支持する構造でも良い。ただし支持部材２０を板状構造にする方が、高温となったセンターシーラ３０からの輻射熱を遮断する効果が大きく好ましい。また支持部材２０を、隙間６が形成される側と反対側の端部を長手方向に沿って曲げ加工しても良い。曲げ加工によって支持部材２０の剛性を高めることができる。この際、底面側に曲げ加工すれば、センターシーラ３０の熱が側面から回り込むことを抑制できる。一方、上面側に曲げ加工すれば、板状部材１０の側面と当接して該板状部材１０を位置決めすることもできる。 Although FIG. 2A shows an example in which the support member 20 has a plate-like structure, a structure in which reinforcing bars are discretely provided to support the plate-like member 10 may be used. However, it is preferable that the support member 20 has a plate-like structure because it has a large effect of blocking radiant heat from the center sealer 30 which has become hot. Further, the support member 20 may be bent along the longitudinal direction at the end portion on the side opposite to the side where the gap 6 is formed. The rigidity of the support member 20 can be increased by bending. At this time, if the bottom surface side is bent, the heat of the center sealer 30 can be suppressed from wrapping around from the side surface. On the other hand, if the plate-shaped member 10 is bent toward the upper surface side, the plate-shaped member 10 can be positioned in contact with the side surface of the plate-shaped member 10.

図３は、フィルム搬送面８に施すエンボスの例を示す。被包装物７は筒状フィルム１１０に包まれた状態で上板５の上面であるフィルム搬送面８に接触しながら搬送される。フィルム搬送面８の材料としては強度や耐熱性などを考慮してアルミニウム、ステンレス等の金属を使用することが考えられるが、耐熱性があってエンボス様に表面加工が可能なフッ素樹脂などであってもよい。 FIG. 3 shows an example of embossing applied to the film transport surface 8. The object to be packaged 7 is transported while being wrapped in the tubular film 110 and in contact with the film transport surface 8 which is the upper surface of the upper plate 5. As the material of the film transport surface 8, it is conceivable to use a metal such as aluminum or stainless steel in consideration of strength and heat resistance, but it is a fluororesin or the like that has heat resistance and can be surface-processed like embossing. You may.

エンボス凸部２１０間の幅方向のピッチｐ１は３ｍｍ以下、搬送方向のピッチｐ２は７ｍｍ以下であるとフィルムが滑りやすく好ましい。更に、エンボス凸部２１０間の幅方向のピッチｐ１は２ｍｍ以下、搬送方向のピッチｐ２は４ｍｍ以下であると、フィルムが一層滑りやすく好ましい。一方で、製造コストやフィルム搬送面８の剛性等の観点から、エンボス凸部２１０間の幅方向のピッチｐ１は１ｍｍ以上、搬送方向のピッチｐ２は２ｍｍ以上であることが好ましい。 It is preferable that the pitch p1 in the width direction between the embossed convex portions 210 is 3 mm or less and the pitch p2 in the transport direction is 7 mm or less because the film is slippery. Further, when the pitch p1 in the width direction between the embossed convex portions 210 is 2 mm or less and the pitch p2 in the transport direction is 4 mm or less, the film is more slippery, which is preferable. On the other hand, from the viewpoint of manufacturing cost, rigidity of the film transport surface 8, and the like, the pitch p1 in the width direction between the embossed convex portions 210 is preferably 1 mm or more, and the pitch p2 in the transport direction is preferably 2 mm or more.

なお、単位面積当たりのエンボス凸部２１０の数は、３．２１個／ｃｍ２以上であるとフィルムが滑りやすく好ましい。より望ましくは１１．５２個／ｃｍ２以上とする。一方で、製造コストやフィルム搬送面８の剛性等の観点から、１００個／ｃｍ２以下とすることが好ましい。 It is preferable that the number of embossed convex portions 210 per unit area is 3.21 pieces / cm2 or more because the film is slippery. More preferably, it is 11.52 pieces / cm2 or more. On the other hand, from the viewpoint of manufacturing cost, rigidity of the film transport surface 8, and the like, the number is preferably 100 pieces / cm2 or less.

またエンボス凸部２１０の頂部は、角がない曲面であることがフィルムの引っかかりを防ぎ望ましい。エンボス凸部２１０の高さは、０．０５ｍｍ以上、且つ、０．３ｍｍ以下であることが望ましいが、この範囲外であっても良い。地金２００に平行な方向のエンボス凸部２１０の形状としては、図３（ａ）紡錘形、図３（ｂ）半球形、図３（ｃ）涙滴形、図３（ｄ）菱形などが考えられる。また各エンボス凸部２１０の配置は、格子状に配置するものや千鳥状に配置するもの、あるいは図３（ｅ）のようにランダムに配置するものが考えられる。なおエンボス凸部２１０が図２(a)のような紡錘形であるときには図中の矢印方向にフィルムが搬送されるようにするとフィルムとフィルム搬送面の滑りが良く好ましい。 Further, it is desirable that the top of the embossed convex portion 210 has a curved surface having no corners to prevent the film from being caught. The height of the embossed convex portion 210 is preferably 0.05 mm or more and 0.3 mm or less, but it may be outside this range. As the shape of the embossed convex portion 210 in the direction parallel to the bullion 200, FIG. 3 (a) spindle shape, FIG. 3 (b) hemispherical shape, FIG. 3 (c) teardrop shape, FIG. 3 (d) rhombus and the like can be considered. Be done. Further, the embossed convex portions 210 may be arranged in a grid pattern, in a staggered pattern, or randomly as shown in FIG. 3 (e). When the embossed convex portion 210 has a spindle shape as shown in FIG. 2A, it is preferable that the film is conveyed in the direction of the arrow in the drawing because the film and the film conveying surface slide smoothly.

次に、以上のように構成されたピロー包装機１の動作について図４を用いて説明する。センターシール装置３において、筒状フィルム１１０の両側端縁部を重ね合わせたフィルム重合端をセンターシーラ３０によって熱シールし、センターシール部１２０を生成する。このときセンターシーラ３０はフィルム重合のために室温よりも高温になっている。 Next, the operation of the pillow packaging machine 1 configured as described above will be described with reference to FIG. In the center seal device 3, the film polymerized end in which the edge portions on both sides of the tubular film 110 are overlapped is heat-sealed by the center sealer 30 to generate the center seal portion 120. At this time, the center sealer 30 is heated to a temperature higher than room temperature due to film polymerization.

既に述べたようにフィルム搬送面８にはエンボス凸部２１０が形成されているので、主にエンボス凸部２１０の頂部付近が筒状フィルム１１０と接触することになり、フィルムとフィルム搬送面８の間に空隙が形成される。したがって筒状フィルム１１０とフィルム搬送面８の接触面積が小さくなる。これによりセンターシーラ３０の加熱に伴う輻射熱がフィルム搬送面８を通じて筒状フィルム１１０に伝達されにくくなり筒状フィルムが熱変性する原因が低減される。また接触面積が小さくなることで摩擦力が低減し、筒状フィルム１１０がフィルム搬送面８に付着する可能性を低くすることができる。これらの相乗効果として搬送不良を起こしにくくなる。 As described above, since the embossed convex portion 210 is formed on the film transport surface 8, the vicinity of the top of the embossed convex portion 210 comes into contact with the tubular film 110, and the film and the film transport surface 8 come into contact with each other. A gap is formed between them. Therefore, the contact area between the tubular film 110 and the film transport surface 8 becomes smaller. As a result, the radiant heat associated with the heating of the center sealer 30 is less likely to be transmitted to the tubular film 110 through the film transport surface 8, and the cause of thermal denaturation of the tubular film is reduced. Further, by reducing the contact area, the frictional force is reduced, and the possibility that the tubular film 110 adheres to the film transport surface 8 can be reduced. As a synergistic effect of these, transport defects are less likely to occur.

以上説明した本実施形態のピロー包装機１によれば、フィルム搬送面８にエンボス凸部２１０を備えることで搬送不良の可能性を低減することができる。なおフィルムと搬送面との付着を避けるという意味では、フィルムサプライ装置や製袋器のフィルム搬送面、包装後の包装体の搬送手段の搬送面にも、本実施形態で説明した構造のエンボスを施すことは有効であると考えられる。 According to the pillow wrapping machine 1 of the present embodiment described above, the possibility of transport failure can be reduced by providing the film transport surface 8 with the embossed convex portion 210. In terms of avoiding adhesion between the film and the transport surface, embossing of the structure described in the present embodiment is also applied to the film transport surface of the film supply device and the bag making device, and the transport surface of the transport means of the package after packaging. It is considered effective to apply.

図５（ａ）を用いて本発明の第２の実施形態のピロー包装機の筒状フィルムのフィルム搬送面について説明する。なお、フィルム搬送面の近傍を除き、他の構成は第１の実施形態のピロー包装機と同じであるので図示及び説明を省略する。 The film transport surface of the tubular film of the pillow wrapping machine according to the second embodiment of the present invention will be described with reference to FIG. 5A. Since the other configurations are the same as those of the pillow packaging machine of the first embodiment except for the vicinity of the film transport surface, illustration and description thereof will be omitted.

本第２の実施形態の上板５は、図５（ａ）に示すようにフィルム搬送面８にエンボスを備えた板状部材１０だけで構成される。このようにすると、構造が単純なので安価に製造できる。この場合センターシーラ３０からの熱の影響を小さくするために冷却ブロックを上板５の周囲又はセンターシーラ３０側の面に設けても良い。また上板５のセンターシーラ３０側の面に断熱性塗料を塗布しても良い。 As shown in FIG. 5A, the upper plate 5 of the second embodiment is composed of only a plate-shaped member 10 having an embossed film transport surface 8. In this way, since the structure is simple, it can be manufactured at low cost. In this case, a cooling block may be provided around the upper plate 5 or on the surface on the center sealer 30 side in order to reduce the influence of heat from the center sealer 30. Further, a heat insulating paint may be applied to the surface of the upper plate 5 on the center sealer 30 side.

次に図５（ｂ）を用いて第３の実施形態のピロー包装機の筒状フィルムのフィルム搬送面について説明する。ここでは上板５を構成する板状部材１０と支持部材２０の間に、断熱層として断熱材１５を挟み込まれている。このような構造にすることで高温となったセンターシーラ３０からの輻射熱を断熱層で遮断することができるので、板状部材１０の温度上昇を抑制することができ、一層効果的にフィルムと搬送面との付着を防ぐことが可能になる。 Next, the film transport surface of the tubular film of the pillow packaging machine of the third embodiment will be described with reference to FIG. 5 (b). Here, the heat insulating material 15 is sandwiched as a heat insulating layer between the plate-shaped member 10 and the support member 20 constituting the upper plate 5. With such a structure, the radiant heat from the high temperature center sealer 30 can be blocked by the heat insulating layer, so that the temperature rise of the plate-shaped member 10 can be suppressed, and the film and the film can be conveyed more effectively. It becomes possible to prevent adhesion to the surface.

本第３実施形態の変形例として空気を断熱層としても良い。例えば図３(ｃ)に示すように、板状部材１０がセンターシーラ３０と反対側に凸の反りを有するようにすれば、板状部材１０と支持部材２０の間に空間４５を形成できる。この空間は、空気による断熱層として機能し、高温の支持部材２０の熱が、板状部材１０の伝達することを抑制する。とりわけ、本変形例のように、板状部材１０が湾曲する場合、板状部材１０のフィルム搬送面８の幅方向が、隙間６に向かってセンターシーラ３０側に傾斜する。結果、筒状フィルムのフィルム重合端の近傍が、円滑にセンターシーラ４０に向かって導かれるので好適である。 As a modification of the third embodiment, air may be used as a heat insulating layer. For example, as shown in FIG. 3C, if the plate-shaped member 10 has a convex warp on the side opposite to the center sealer 30, a space 45 can be formed between the plate-shaped member 10 and the support member 20. This space functions as a heat insulating layer by air, and suppresses the transfer of heat from the high-temperature support member 20 to the plate-shaped member 10. In particular, when the plate-shaped member 10 is curved as in the present modification, the width direction of the film transport surface 8 of the plate-shaped member 10 is inclined toward the center sealer 30 toward the gap 6. As a result, the vicinity of the film polymerization end of the tubular film is smoothly guided toward the center sealer 40, which is preferable.

なお板状部材１０として薄い金属板を使用する場合、プレス加工でエンボスを形成するときに自然にできる反りを利用しても良い。一方で、特に図示しないが、プレス加工や曲げ加工によって、板状部材１０の周囲を積極的にセンターシーラ３０側に屈曲させることで、フィルム搬送面８は平坦にしたまま、背面側に空間４５を形成することもできる。 When a thin metal plate is used as the plate-shaped member 10, the warp that is naturally formed when embossing is formed by press working may be used. On the other hand, although not particularly shown, by positively bending the periphery of the plate-shaped member 10 toward the center sealer 30 by press working or bending, the film transport surface 8 remains flat and the space 45 is on the back side. Can also be formed.

また、第３実施形態の変形例として、図３(ｄ)のように、板状部材１０と支持部材２０の間にスペーサー２５を備えることで両者の間に空間５５を形成しても良い。スペーサーの材質としては耐熱性があり熱伝導率が低いものが望ましい。断熱層として空気を利用する本変形実施例は構造が簡単でありメンテナンス性が良く安価に製造可能という利点がある。 Further, as a modification of the third embodiment, as shown in FIG. 3D, a space 55 may be formed between the plate-shaped member 10 and the support member 20 by providing a spacer 25 between them. The material of the spacer is preferably one having heat resistance and low thermal conductivity. This modified embodiment using air as a heat insulating layer has an advantage that the structure is simple, maintainability is good, and it can be manufactured at low cost.

もちろん空間４５や空間５５に例えばグラスウールなどの断熱材を入れれば、高温となったセンターシーラ３０からの輻射熱がフィルム搬送面に伝達することを積極的に防ぐ断熱層となり、筒状フィルムとフィルム搬送面の付着可能性をさらに低減させることができる。断熱材を入れる代わりに板状部材１０のセンターシーラ３０側の面や支持部材２０のフィルム搬送面側の面に断熱性塗料を塗布しても良い。また上記空間を密閉空間として、その空間を真空又は低圧状態にすると、高温となったセンターシーラ３０から上板５への空気の対流による熱伝達を妨げることができるため断熱層として一層好適である。 Of course, if a heat insulating material such as glass wool is put in the space 45 or 55, it becomes a heat insulating layer that positively prevents the radiant heat from the high temperature center sealer 30 from being transferred to the film transport surface, and the tubular film and the film transport. The possibility of surface adhesion can be further reduced. Instead of inserting the heat insulating material, the heat insulating paint may be applied to the surface of the plate-shaped member 10 on the center sealer 30 side or the surface of the support member 20 on the film transport surface side. Further, when the space is a closed space and the space is in a vacuum or low pressure state, heat transfer due to convection of air from the high temperature center sealer 30 to the upper plate 5 can be prevented, which is more suitable as a heat insulating layer. ..

なお、本実施形態では、上記搬送面をピロー包装機のセンターシール装置に適用する場合を例示したが、本発明は、上記実施の形態に限定されるものではなく、例えばピロー包装機のフィルムサプライ部、フィルム接合装置、又は製袋器等に適用することができる。また、ピロー包装機以外にも個別包装（一時包装）された物品の搬送装置や、集積装置等の各種装置のフィルムと接触する搬送面に適用しても良い。例えば、本発明は以下の構成を採用することができる。 In the present embodiment, the case where the transport surface is applied to the center seal device of the pillow packaging machine is illustrated, but the present invention is not limited to the above embodiment, for example, the film supply of the pillow packaging machine. It can be applied to parts, film joining devices, bag making machines, and the like. Further, in addition to the pillow wrapping machine, it may be applied to a transport device for individually wrapped (temporarily wrapped) articles and a transport surface in contact with a film of various devices such as an integration device. For example, the present invention can adopt the following configuration.

（ア）包装フィルム自体又は包装フィルムに包装された包装体を搬送する搬送装置であって、包装フィルム自体又は包装体が搬送される搬送装置の搬送面にエンボスが形成されることを特徴とする構成であってもよい。 (A) A transport device for transporting the packaging film itself or a package packaged in the packaging film, characterized in that embossing is formed on the transport surface of the packaging film itself or the transport device on which the package is transported. It may be a configuration.

（イ）単位面積あたりのエンボス凸部の数は、３．２１個／ｃｍ２以上、且つ、１００個／ｃｍ２以下であることを特徴とする上記（ア）に記載の搬送装置であってもよい。 (B) The transfer device according to (a) above, characterized in that the number of embossed convex portions per unit area is 3.21 pieces / cm2 or more and 100 pieces / cm2 or less. ..

（ウ）前記搬送面を形成する板状部材と、前記板状部材を支持する支持部材とを備えることを特徴とする上記（ア）又は（イ）に記載の搬送装置であってもよい。 (C) The transport device according to (a) or (b) above, characterized in that it includes a plate-shaped member forming the transport surface and a support member for supporting the plate-shaped member.

なお、上記（ア）〜（ウ）の構成の場合、搬送方向の中間に隙間を有する必要が無い。従って、図１乃至図５で示した一対の上板及び搬送面の一方のみの構成を、搬送面全体に適用すれば良い。 In the case of the configurations (a) to (c) above, it is not necessary to have a gap in the middle of the transport direction. Therefore, the configuration of only one of the pair of upper plates and the transport surface shown in FIGS. 1 to 5 may be applied to the entire transport surface.

１ピロー包装機
２フィルム供給装置
３センターシール装置
４エンドシール装置
５上板
６隙間
７被包装物
８フィルム搬送面
９押圧面
１０板状部材
１５断熱材
２０支持部材
２５スペーサー
２７ピンチローラ
３０センターシーラ
３５製袋機
４０移送コンベア
４５空間
５０搬出コンベア
５５空間
６０上側抑えベルト
７０フィンガーコンベア
８０フィンガー
９０原反ロール
１００帯状フィルム
１１０筒状フィルム
１２０センターシール部
２００地金
２１０エンボス凸部 1 Pillow wrapping machine 2 Film supply device 3 Center seal device 4 End seal device 5 Top plate 6 Gap 7 Packaged object 8 Film transport surface 9 Pressing surface 10 Plate-shaped member 15 Insulation material 20 Support member 25 Spacer 27 Pinch roller 30 Center sealer 35 Bag making machine 40 Transfer conveyor 45 Space 50 Carrying out conveyor 55 Space 60 Upper holding belt 70 Finger conveyor 80 Finger 90 Original roll 100 Band-shaped film 110 Cylindrical film 120 Center seal part 200 Base metal 210 Embossed convex part

Claims

It has a center-sealing device that forms a strip-shaped film that is continuously supplied into a tubular shape and heat-seals the film-polymerized ends on which both side edge portions of the strip-shaped film are overlapped with a sealer to form a tubular film. Pillow packaging machine
A plate-shaped member arranged between the sealer and the tubular film to form a film transport surface,
A support member that supports the plate-shaped member and
With
A gap through which the film polymerization end passes is formed on the film transport surface.
The gap is
The first gap formed by the plate-shaped member and
It consists of a second gap formed by the support member.
The distance between the first gaps is wider than the distance between the second gaps.
A pillow wrapping machine characterized in that embossing is formed in a seal region which is at least a region near the sealer on the film transport surface.

The pillow wrapping machine according to claim 1, wherein the number of the convex portions of the embossing per unit area is 3.21 pieces / cm2 or more and 100 pieces / cm2 or less.

The pillow wrapping machine according to claim 1 or 2, wherein the pitch between the convex portions of the embossing is 1 mm or more and 3 mm or less.

The pillow wrapping machine according to any one of claims 1 to 3, wherein a heat insulating layer is provided between the plate-shaped member and the support member.

The pillow wrapping machine according to claim 4, wherein a space in which air exists is formed as the heat insulating layer.