JP3205796B2 - Bag making device in vertical bag making and filling machine - Google Patents
Bag making device in vertical bag making and filling machineInfo
- Publication number
- JP3205796B2 JP3205796B2 JP31597497A JP31597497A JP3205796B2 JP 3205796 B2 JP3205796 B2 JP 3205796B2 JP 31597497 A JP31597497 A JP 31597497A JP 31597497 A JP31597497 A JP 31597497A JP 3205796 B2 JP3205796 B2 JP 3205796B2
- Authority
- JP
- Japan
- Prior art keywords
- bag making
- loop
- frame
- roller
- support member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Containers And Plastic Fillers For Packaging (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、縦型製袋充填機
の製袋装置に関し、更に詳細には、帯状フィルムを筒状
の袋体に成形し、該袋体中に被包装物品を充填した後シ
ールを施して包装体を製造する縦型製袋充填機におい
て、前記帯状フィルムから成形される筒状袋体の開口直
径を、無段階調節し得る製袋装置の改良に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag making apparatus for a vertical bag making and filling machine, and more particularly, to forming a band-like film into a tubular bag and filling the bag with articles to be packaged. The present invention relates to an improvement in a bag making apparatus capable of continuously adjusting the opening diameter of a tubular bag formed from the belt-like film in a vertical bag making and filling machine for producing a package by applying a seal after the sealing.
【０００２】[0002]
【従来の技術】縦型製袋充填機において、帯状フィルム
を筒状の袋体に成形する製袋装置として、所要幅に設定
された長尺な弾性板材をループ状に折曲形成し、その一
方を製袋充填機を構成するフレームに支持固定すると共
に、他端側を進退送り機構に連接した構成の製袋装置
が、本件出願人によって発明(特公平３−１７６９２号,
特公平３−１７６９３号)されている。この製袋装置
は、撓曲性に富む弾性板材の一端部を、フレームに対し
て所定方向に相対移動する支持部材の固定側にボルト等
の部材を介して固定し、また該板材の他端部は、支持部
材に配設された進退送り機構に取付けられる。そして、
被包装物品の大きさに合わせて袋体のサイズを変更する
場合には、進退送り機構によって弾性板材の他端部を進
退送りすることにより、該弾性板材で成形されている前
記ループが自在に収束あるいは拡開して、筒状フィルム
の開口直径を無段階に調節できる。2. Description of the Related Art In a vertical bag making and filling machine, as a bag making apparatus for forming a band-like film into a cylindrical bag, a long elastic plate material set to a required width is bent and formed into a loop. A bag-making apparatus having a configuration in which one is supported and fixed to a frame constituting a bag-making and filling machine and the other end is connected to an advance / retreat mechanism is invented by the present applicant (Japanese Patent Publication No. 3-17692,
It is KOKOKU 3-176 93 issue). In this bag making apparatus, one end of an elastic plate material rich in flexibility is fixed to a fixed side of a support member relatively moving with respect to a frame in a predetermined direction via a member such as a bolt, and the other end of the plate material is fixed. The unit is attached to an advance / retreat mechanism provided on the support member. And
When the size of the bag body is changed according to the size of the article to be packaged, the loop formed by the elastic plate material can be freely moved by moving the other end of the elastic plate material forward and backward by an advance / retreat feed mechanism. By converging or expanding, the opening diameter of the tubular film can be adjusted steplessly.
【０００３】[0003]
【発明が解決しようとする課題】前述した縦型製袋充填
機の製袋装置では、ループ状に形成した前記弾性板材の
一方を固定側としてループを収束あるいは拡開させるよ
うに構成されている。このため包装時に設定される袋体
のサイズによっては、ループを形成するうえでのバラン
スが左右において均等にならずに崩れてしまい、この状
態で包装用フィルムを給送した場合には、該フィルムの
蛇行等を招来して製袋不良を引き起こすと云った不具合
があった。また、製袋サイズを変更した際にループを真
円に保持するために、前記進退送り機構を設けた支持部
材と、該ループの背面側を支持する別の支持部材とを別
の進退送り機構により相対的に近接移動させると共に、
該別の支持部材に配設されて、ループの上端側を支持す
る保持部材も直径の変化に対応して高さ調節する必要が
ある。すなわち、製袋サイズを変更した際にループを真
円に保持するには、複数の調節部材を個々に調節する必
要があり、調節作業が煩雑になるだけでなく、真円に近
づけるためには熟練を要していた。また再度同じ位置決
め設定を行ないたい場合でも、個々の調節部材のわずか
な位置決め誤差により、ループによる製袋ラインが前の
設定と異なってしまい、上記と同様の問題が発生するこ
とがあった。更に、ループで成形された筒状フィルムの
重合端縁部は、該フィルムの外周縁に沿って折り曲げら
れていたため、重合端縁部を挟持してセンターシールを
施す際に一旦折り曲げられた筒状フィルムの重合端縁部
をループの直径方向に起こすためのガイド部材を設ける
等の対策を施す必要があった。In the bag making apparatus of the vertical bag making and filling machine described above, the loop is converged or expanded with one of the elastic plate members formed in a loop shape as a fixed side. . For this reason, depending on the size of the bag set at the time of packaging, the balance in forming the loop may not be uniform on the left and right, and may collapse, and when the packaging film is fed in this state, the film There was a problem that it caused a meandering and the like to cause a bag making defect. Further, in order to keep the loop in a perfect circle when the bag making size is changed, a support member provided with the advance / retreat mechanism and another support member supporting the back side of the loop are separated by a different advance / retreat mechanism. To move relatively closer together,
It is necessary to adjust the height of the holding member, which is provided on the other support member and supports the upper end side of the loop, in accordance with the change in the diameter. That is, in order to keep the loop in a perfect circle when the bag making size is changed, it is necessary to individually adjust a plurality of adjustment members, which not only complicates the adjustment work but also makes the adjustment work close to a perfect circle. It required skill. Further, even when the same positioning setting is to be performed again, a slight positioning error of each adjustment member may cause the bag making line by the loop to be different from the previous setting, and the same problem as described above may occur. Furthermore, since the overlapping edge portion of the tubular film formed by the loop was bent along the outer peripheral edge of the film, the tubular portion once bent when the center edge was applied by sandwiching the overlapping edge portion. It was necessary to take measures such as providing a guide member for raising the overlapping edge of the film in the diameter direction of the loop.
【０００４】[0004]
【発明の目的】この発明は、前述した欠点に鑑み、これ
を好適に解決するべく提案されたものであって、製袋サ
イズの変更に際して製袋ラインが崩れるのを防止し得る
製袋装置を提供することを第１の目的とし、また併せて
一つの調節個所のみによる調節で製袋サイズの調節を行
ない得る製袋装置を提供することを第２の目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has been proposed in order to solve the problem in a favorable manner. A bag-making apparatus capable of preventing a bag-making line from being broken when a bag-making size is changed is disclosed. A first object is to provide a bag making apparatus, and a second object is to provide a bag making apparatus capable of adjusting a bag making size by adjusting only one adjustment point.
【０００５】[0005]
【課題を解決するための手段】前記課題を克服し、所期
の目的を好適に達成するため本発明は、帯状の包装用フ
ィルムを筒状成形するループを弾性板材にて形成し、該
ループを製袋サイズに応じて自在に収束または拡開する
ことで無段階にサイズ調節可能な縦型製袋充填機におけ
る製袋装置において、前記弾性板材を構成し、ループの
周方向に分割された２つの板片と、前記両板片の長手方
向における一端部側を相互に摺接状態でスライド可能に
支持する摺動手段と、前記両板片の摺接部分と対峙する
位置に設けられ、前記ループで筒状成形される筒状フィ
ルムにおける重合端縁部の通過を許容する間隙が形成さ
れると共に、各板片の長手方向における他端部が固定さ
れる保持部材と、前記両板片の摺接部分を相互にスライ
ド可能に支持し、該摺接部分の高さ調節を行なうべく昇
降移動する支持部材と、前記両板片の摺接部分における
端部に一端が夫々係止され、反対の板片に沿って引張ら
れる一対の索体とからなり、前記一対の索体を同一量だ
け反対方向に移動することにより前記ループが収束、拡
開するよう構成したことを特徴とする。SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and appropriately achieve the intended object, the present invention provides a method for forming a belt-shaped packaging film into a tubular shape by using an elastic plate material, In the bag making apparatus in a vertical bag making and filling machine in which the size can be adjusted steplessly by freely converging or expanding according to the bag making size, the elastic plate material is formed and divided in the circumferential direction of the loop. Two plate pieces, sliding means for slidably supporting one end side in the longitudinal direction of the two plate pieces in a sliding contact state with each other, provided at a position facing the sliding contact portion of the two plate pieces, A gap is formed to allow passage of the overlapped edge in the tubular film formed into a tubular shape by the loop, and a holding member to which the other end in the longitudinal direction of each plate is fixed; Slidably support the sliding parts of each other, A support member that moves up and down to adjust the height of the sliding contact portion, and a pair of rope bodies each having one end locked to an end of the sliding contact portion between the two plate pieces and pulled along the opposite plate piece; And the loop is converged and expanded by moving the pair of ropes in opposite directions by the same amount.
【０００６】[0006]
【発明の実施の形態】次に、本発明に係る縦型製袋充填
機の製袋装置につき、好適な実施例を挙げて、添付図面
を参照しながら以下説明する。図１は、実施例に係る製
袋装置１０の概略構成を示す平面図、図２は、製袋装置
の概略正面図である。この製袋装置１０は、ループ形成
に供される弾性板材１２を左右２分割にすると共に、左
右の板片１２ａ,１２ｂがループを形成するのに充分な
長さで相互にスライド自在に構成されている。すなわち
左右の板片１２ａ,１２ｂは、例えばバネ鋼または樹脂
等を素材とする撓曲性に富んだ所要幅の長尺な弾性薄板
状体であって、その幅方向の中央より下方に該板片１２
ａ,１２ｂの長手方向に沿って摺動手段を構成するスリ
ット１３が夫々設けられている。スリット１３の幅寸法
は、各板片１２ａ,１２ｂの幅よりも充分狭く設定され
ると共に、製袋サイズの必要とされる変更範囲に対応す
る長さに設定されて、各板片１２ａ,１２ｂの一端部近
傍から他端部近傍までの範囲で形成されている。そし
て、各板片１２ａ,１２ｂの長手方向一端部が、重畳し
た状態で後述する高さ調節機構１６で昇降調節される支
持部材５０に相互にスライド可能に支持され、他端部が
後述する移動調節機構３６により前後方向に進退移動さ
れる保持部材２０ａ,２０ｂに固定される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of a bag making apparatus for a vertical bag making and filling machine according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view showing a schematic configuration of a bag making apparatus 10 according to an embodiment, and FIG. 2 is a schematic front view of the bag making apparatus. This bag-making apparatus 10 is configured such that the elastic plate 12 to be formed into a loop is divided into right and left parts, and the left and right plate pieces 12a and 12b are slidable with respect to each other with a length sufficient to form a loop. ing. That is, the left and right plate pieces 12a and 12b are long elastic thin plate members having a required width and rich in flexibility and made of, for example, spring steel or resin, and the plate members are provided below the center in the width direction. Piece 12
A slit 13 which constitutes a sliding means is provided along the longitudinal direction of each of a and 12b. The width dimension of the slit 13 is set to be sufficiently smaller than the width of each of the plate pieces 12a and 12b, and is set to a length corresponding to a required change range of the bag making size. Is formed in a range from the vicinity of one end to the vicinity of the other end. One end in the longitudinal direction of each of the plate pieces 12a and 12b is slidably supported by a support member 50 that is vertically adjusted by a height adjustment mechanism 16 described later in a superimposed state, and the other end is moved in a manner described later. It is fixed to the holding members 20a and 20b which are moved forward and backward by the adjusting mechanism 36.
【０００７】前記両板片１２ａ,１２ｂにおける各スリ
ット１３の長手方向一端部には、図２に示す如く、中央
部に小径の通孔１５が穿設されたリング状の摺動手段を
構成する摺動部材１４ａ,１４ｂが対応的にカシメ固定
されている。この摺動部材１４ａ,１４ｂには、スリッ
ト１３の幅と略同一直径の周溝１７が夫々形成され、左
板片１２ａにカシメ固定された左摺動部材１４ａの周溝
１７には、右板片１２ｂのスリット１３が摺動自在に嵌
挿されている。また同様に、右板片１２ｂにカシメ固定
された右摺動部材１４ｂの周溝１７には、左板片１２ａ
のスリット１３が摺動自在に嵌挿され(図４参照)、これ
によって左右の板片１２ａ,１２ｂは、その長手方向一
端部近傍がスリット１３,１３を整列させた摺接状態で
相互にスライドし得るよう構成される。そして、摺動部
材１４ａ,１４ｂで一体的に構成された左右の板片１２
ａ,１２ｂの摺接部分における摺動部材１４ａ,１４ｂの
間における中間位置に臨む部位が、前記支持部材５０に
よって支持されるようになっている。また左摺動部材１
４ａに左第１索体１８ａの一端部が係止されると共に、
右摺動部材１４ｂに右第１索体１８ｂの一端部が係止さ
れ、両第１索体１８ａ,１８ｂの夫々を、板片１２ａ,１
２ｂで形成されるループに沿って相互に逆方向に引張る
ことにより、各板片１２ａ,１２ｂの摺接端部が相互に
離間する方向にスライドしてループが収束するよう構成
される。なお、両板片１２ａ,１２ｂは、自身の弾性力
によって常には摺接端部を相互に近接する方向、すなわ
ちループを拡開する方向に付勢されている。As shown in FIG. 2, a ring-shaped sliding means having a small-diameter through hole 15 in the center is formed at one longitudinal end of each slit 13 in both plate pieces 12a and 12b. The sliding members 14a and 14b are caulked and fixed correspondingly. Each of the sliding members 14a and 14b is formed with a circumferential groove 17 having a diameter substantially equal to the width of the slit 13, and the circumferential groove 17 of the left sliding member 14a fixed to the left plate piece 12a by a right plate. The slit 13 of the piece 12b is slidably fitted. Similarly, in the circumferential groove 17 of the right sliding member 14b fixed by caulking to the right plate piece 12b, the left plate piece 12a
(See FIG. 4), so that the left and right plate pieces 12a and 12b slide with each other in a sliding contact state in which the slits 13 and 13 are aligned near one longitudinal end. It is configured to be able to. Then, the left and right plate pieces 12 integrally formed by the sliding members 14a and 14b.
A portion facing an intermediate position between the sliding members 14a and 14b in the sliding contact portions a and 12b is supported by the support member 50. Left sliding member 1
One end of the left first cord 18a is locked to 4a,
One end of the right first cord 18b is locked to the right sliding member 14b, and each of the first cords 18a, 18b is connected to the plate piece 12a, 1
By pulling in the opposite directions along the loop formed by 2b, the sliding ends of the respective plate pieces 12a and 12b slide in the direction away from each other, so that the loops converge. The two plate pieces 12a and 12b are always urged by their own elastic force in a direction in which the sliding contact ends come close to each other, that is, a direction in which the loop is expanded.
【０００８】図１および図２に示す如く、弾性力に抗し
て曲折された左右の板片１２ａ,１２ｂの他端部は、ル
ープの直径方向において前記摺接部分と対峙する位置に
配設された保持部材２０ａ,２０ｂに対応的に固定され
ている。保持部材２０ａ,２０ｂは、第１フレーム２２
に対して左右に間隙Ｇだけ離間して取付けられたもので
あって、該保持部材２０ａ,２０ｂの対向面に各板片１
２ａ,１２ｂの他端部が固定されている。なお、保持部
材２０ａ,２０ｂに固定された両板片１２ａ,１２ｂの対
向部は、弾性板材１２で形成されたループで筒状に成形
される筒状フィルムｆにおける重合端縁部ｆａの通過を
許容する離間間隔Ｇに設定されている。また、保持部材
２０ａ,２０ｂが第１フレーム２２に取付けられる高さ
位置は、前記板片１２ａ,１２ｂの摺接部分における前
記支持部材５０で支持されている位置よりも低い位置に
臨むよう設定されている。このため弾性板材１２は、図
２に示すように、ループ正面側に向かって所定角度で下
方傾斜するよう配置されるが、図１に示す如く、上面か
ら観察した場合には該ループにおける内径部の真円状態
が保持されるよう構成されている。なお、一対の保持部
材２０ａ,２０ｂの間隙Ｇは、ループにより筒状成形さ
れた筒状フィルムｆの重合端縁部ｆａをループの直径方
向に突出するように案内する状態で定位置(ループ中心
位置)に保持されているから、該重合端縁部ｆａを別の
部材により筒状フィルムｆの直径方向に起こす必要はな
い。As shown in FIGS. 1 and 2, the other end portions of the left and right plate pieces 12a and 12b bent against the elastic force are disposed at positions facing the sliding portions in the diameter direction of the loop. The holding members 20a and 20b are fixed correspondingly. The holding members 20a and 20b are connected to the first frame 22.
Are attached to the left and right with a gap G therebetween, and each plate piece 1 is attached to the opposing surface of the holding members 20a and 20b.
The other ends of 2a and 12b are fixed. The opposed portions of the two plate pieces 12a, 12b fixed to the holding members 20a, 20b pass through the overlapping edge portion fa of the tubular film f formed into a tubular shape by the loop formed by the elastic plate material 12. It is set to an allowable separation interval G. The height position where the holding members 20a and 20b are attached to the first frame 22 is set so as to face a position lower than the position supported by the support member 50 in the sliding contact portion of the plate pieces 12a and 12b. ing. For this reason, the elastic plate member 12 is arranged so as to be inclined downward at a predetermined angle toward the front side of the loop, as shown in FIG. 2, but as shown in FIG. Is configured to maintain the true circular state. Note that the gap G between the pair of holding members 20a and 20b is fixed at a fixed position (the center of the loop) in a state where the overlapping end edge fa of the tubular film f formed by the loop is guided so as to protrude in the diameter direction of the loop. Position), it is not necessary to raise the overlapped edge fa in the diameter direction of the tubular film f by another member.
【０００９】前記保持部材２０ａ,２０ｂが取付けられ
る第１フレーム２２は、図１および図２に示す如く、包
装機の本体側に支持固定された筐体フレーム２４と並列
状態で配設され、その左右両端部が、該筐体フレーム２
４に配設されてループの背面側に延出する一対のスライ
ドシャフト２６,２６に摺動自在に支持されている。第
１フレーム２２の中央部近傍には、ループを形成した弾
性板材１２に向けて２本の支持片２２ａ,２２ｂが一体
的に突出成形されており、その開放端部に前記保持部材
２０ａ,２０ｂが対応的に取付けられている。すなわ
ち、両板片１２ａ,１２ｂの他端部は、第１フレーム２
２と一体的に前後方向に移動可能に構成される。なお各
スライドシャフト２６は、その長手方向略中央部に配設
されたホルダ２７によって製袋装置１０に固定されてい
る。As shown in FIGS. 1 and 2, the first frame 22 to which the holding members 20a and 20b are attached is disposed in parallel with a housing frame 24 supported and fixed to the main body of the packaging machine. The left and right ends are the housing frame 2
4 and is slidably supported by a pair of slide shafts 26, 26 extending to the rear side of the loop. In the vicinity of the center of the first frame 22, two support pieces 22a and 22b are integrally formed so as to project toward the elastic plate member 12 having a loop, and the holding members 20a and 20b are formed at their open ends. Are mounted correspondingly. That is, the other ends of the two plate pieces 12a and 12b are
2 is configured to be able to move in the front-rear direction integrally. Each slide shaft 26 is fixed to the bag-making apparatus 10 by a holder 27 disposed substantially at the center in the longitudinal direction.
【００１０】前記第１フレーム２２の上面中央部には、
両支持片２２ａ,２２ｂの離間幅よりも若干短い寸法に
設定された水平板２８が配設されている。この水平板２
８の上面には、水平方向に自由回転可能に支持された２
基の案内ローラ３０ａ,３０ｂが、前記保持部材２０ａ,
２０ｂにおける間隙部の延長線を挟んで千鳥状に配置さ
れている。なお、実施例では延長線を挟んで右側に左案
内ローラ３０ａが配置され、左側に右案内ローラ３０ｂ
が配置されている。また第１フレーム２８における左支
持片２２ａの左側に、筐体フレーム２４に回転自在に支
持されてスライドシャフト２６と平行に延在する軸体３
４が挿通されると共に、該軸体３４に対して一体回転可
能で軸方向移動は許容される巻付けローラ３２が第１フ
レーム２２に回転自在に配設されている。At the center of the upper surface of the first frame 22,
A horizontal plate 28 having a dimension slightly shorter than the distance between the support pieces 22a and 22b is provided. This horizontal plate 2
8 is supported on the upper surface so as to be freely rotatable in the horizontal direction.
The base guide rollers 30a, 30b are connected to the holding members 20a,
They are arranged in a staggered manner with the extension of the gap in 20b interposed therebetween. In the embodiment, the left guide roller 30a is disposed on the right side of the extension line, and the right guide roller 30b is disposed on the left side.
Is arranged. Further, on the left side of the left support piece 22a of the first frame 28, the shaft body 3 rotatably supported by the housing frame 24 and extending in parallel with the slide shaft 26.
4 is inserted, and a winding roller 32 rotatable with respect to the shaft body 34 and capable of moving in the axial direction is rotatably disposed on the first frame 22.
【００１１】前記左第１索体１８ａは、その一端部が左
板片１２ａにおける左摺動部材１４ａの通孔１５に挿通
係止され、右板片１２ｂの外側面に沿って巻掛けられた
状態で前記右保持部材２０ｂに形成された穴７６に挿通
された後に左案内ローラ３０ａを介して他端部が巻付け
ローラ３２に掛止される(図１参照)。また右第１索体１
８ｂは、その一端部が右板片１２ｂにおける右摺動部材
１４ｂの通孔１５に挿通係止され、左板片１２ａの外側
面に沿って巻掛けられた状態で前記左保持部材２０ａに
形成された穴７５に挿通された後に右案内ローラ３０ｂ
を介して他端部が巻付けローラ３２に掛止される。すな
わち、両第１索体１８ａ,１８ｂを巻取る方向に巻付け
ローラ３２を回転すると、左右の板片１２ａ,１２ｂの
摺接端部が相互に離間方向に移動してループは収束さ
れ、逆に両索体１８ａ,１８ｂを巻戻す方向に巻付けロ
ーラ３２を回転すると、左右の板片１２ａ,１２ｂの摺
接端部が当該板片１２ａ,１２ｂの弾性力によって相互
に近接方向に移動してループは拡開されるようになって
いる。なお、両第１索体１８ａ,１８ｂは、例えばワイ
ヤ、あるいは樹脂ひも等のように柔軟性があって、かつ
引張り強度に優れたもので、ループになじんで引張るこ
とができるものであれば、各種材質のものが使用可能で
ある。One end of the left first rope 18a is inserted and locked in the through hole 15 of the left sliding member 14a in the left plate 12a, and is wound around the outer surface of the right plate 12b. After being inserted into the hole 76 formed in the right holding member 20b in this state, the other end is hooked on the winding roller 32 via the left guide roller 30a (see FIG. 1). In addition, right first cord 1
8b is formed on the left holding member 20a in a state where one end thereof is inserted and locked in the through hole 15 of the right sliding member 14b in the right plate piece 12b and is wound around the outer surface of the left plate piece 12a. Guide roller 30b after being inserted through the hole 75
And the other end is hung on the winding roller 32. That is, when the winding roller 32 is rotated in the direction of winding both the first cords 18a, 18b, the sliding contact ends of the left and right plate pieces 12a, 12b move in the direction away from each other, and the loop is converged, and When the winding roller 32 is rotated in the direction of rewinding the two cords 18a, 18b, the sliding contact ends of the left and right plate pieces 12a, 12b move in the mutually approaching direction by the elastic force of the plate pieces 12a, 12b. The loop is expanded. In addition, both the first cords 18a and 18b are flexible and have excellent tensile strength, such as a wire or a resin string, for example, as long as they can be adapted to the loop and pulled. Various materials can be used.
【００１２】前記弾性板材１２で形成されるループを挟
んで第１フレーム２２とは反対側に、前記スライドシャ
フト２６,２６に摺動自在に支持されて、第１フレーム
２２に対して水平に近接・離間移動可能な第２フレーム
４２が配設される。この第２フレーム４２の中央部分
は、平面から観察した場合において、ループを形成した
前記弾性板材１２により筒状成形された筒状フィルムｆ
の下方への通過を許容し得る寸法で凹状に折曲形成され
ている。そして、ループ背面側に折曲形成された部分
に、前記両板片１２ａ,１２ｂにおける前記支持部材５
０で支持されている摺接部分の高さを調節する高さ調節
機構１６により昇降調節される該支持部材５０が、第２
フレーム４２に対して上下方向に挿通支持されている。
この支持部材５０の上部に配設された支持体４６の背面
側は、図３に示す如く、上方から下方に向かうにつれて
ループから離間する傾斜が付され、前記スリット１３の
幅と略同径で該傾斜背面に突設した保持ピン５２が、両
板片１２ａ,１２ｂのスリット１３,１３に共通的に挿通
されている。また保持ピン５２の開放端には、支持体４
６との間で両板片１２ａ,１２ｂを摺動自在に挟持する
補助板５４が配設され、これによって支持部材５０に両
板片１２ａ,１２ｂが相互に摺動可能な状態で支持され
る。なお、支持体４６および補助板５４の上端は、弾性
板材１２で形成されるループの上端より所要高さだけ低
い位置に臨むよう設定され、該弾性板材１２で成形され
る筒状フィルムｆと干渉しないようになっている。On the opposite side of the loop formed by the elastic plate member 12 from the first frame 22, the slide shafts 26, 26 are slidably supported by the slide shafts 26, 26, and horizontally approach the first frame 22. -The second frame 42 which can move away is provided. The central portion of the second frame 42 has a tubular film f formed in a tubular shape by the elastic plate 12 having a loop when viewed from a plane.
Is formed in a concave shape with a size that allows the passage of the lower part of the body. The support member 5 of the two plate pieces 12a and 12b is provided in a portion bent on the back side of the loop.
The support member 50, which is vertically moved by the height adjustment mechanism 16 that adjusts the height of the sliding contact portion supported by the second member,
The frame 42 is vertically inserted and supported by the frame 42.
As shown in FIG. 3, the back side of the support 46 disposed on the upper part of the support member 50 is inclined so as to be separated from the loop from the upper side to the lower side, and has a diameter substantially equal to the width of the slit 13. A holding pin 52 projecting from the inclined rear surface is commonly inserted into the slits 13 of the two plate pieces 12a and 12b. A support 4 is provided at the open end of the holding pin 52.
An auxiliary plate 54 for slidably sandwiching the two plate pieces 12a and 12b is provided between the support member 50 and the support member 50, thereby supporting the two plate pieces 12a and 12b in a mutually slidable manner. . The upper ends of the support 46 and the auxiliary plate 54 are set so as to face a position lower than the upper end of the loop formed by the elastic plate 12 by a required height, and interfere with the cylindrical film f formed by the elastic plate 12. Not to be.
【００１３】前記第１フレーム２２における右支持片２
２ｂの右側に雌ネジ部材７０が配設され、該雌ネジ部材
７０に、前記筐体フレーム２４に回動自在に支持されて
前記スライドシャフト２６と平行に延在する雄ネジ部か
らなる調節ネジ３８が螺挿されている。またこの調節ネ
ジ３８は、前記第２フレーム４２に配設された雌ネジ部
材７２にも螺挿されている。この調節ネジ３８は、筐体
フレーム２４に軸受７４を介して回転自在に支持され、
該軸受７４を挟む両側に夫々逆方向の雄ネジが螺刻され
たものであって、該調節ネジ３８を正逆方向に回転する
ことで、第１フレーム２２と第２フレーム４２とが相互
に近接および離間移動するよう構成される。そして、前
記両フレーム２２,２４の雌ネジ部材７０,７２と調節ネ
ジ３８とから、移動調節機構３６が構成される。The right support piece 2 of the first frame 22
A female screw member 70 is disposed on the right side of 2b. An adjusting screw comprising a male screw portion rotatably supported by the housing frame 24 and extending in parallel with the slide shaft 26 is provided on the female screw member 70. 38 is screwed. The adjusting screw 38 is also screwed into a female screw member 72 provided on the second frame 42. The adjusting screw 38 is rotatably supported by the housing frame 24 via a bearing 74.
Male screws in opposite directions are respectively threaded on both sides of the bearing 74. By rotating the adjusting screw 38 in the normal and reverse directions, the first frame 22 and the second frame 42 It is configured to move closer and further away. The female screw members 70, 72 of the frames 22, 24 and the adjusting screw 38 constitute a movement adjusting mechanism 36.
【００１４】前記調節ネジ３８の筐体フレーム２４から
外方(第１フレーム２２を指向する側とは反対側)に突出
する端部に、図１に示す如く、駆動ギヤ６２と調節手段
としての調節ハンドル４０とが配設されている。また、
前記巻付けローラ３２を回転させる軸体３４における筐
体フレーム２４から、外方に突出する端部に従動ギヤ６
４が配設され、駆動ギヤ６２と従動ギヤ６４とは、筐体
フレーム２４に回転自在に配設された複数のギヤを噛合
連接してなる連動機構４４によって連結される。すなわ
ち、調節ハンドル４０を正逆方向に回転して、第１フレ
ーム２２と第２フレーム４２とを相互に近接および離間
移動するのに連動して、軸体３４が正逆方向に回転して
前記巻付けローラ３２および第１索体１８ａ,１８ｂを
介して弾性板材１２で形成されるループの収束および拡
開がなされるよう構成される。なお、両フレーム２２,
４２が近接する際には、前記巻付けローラ３２により第
１索体１８ａ,１８ｂの夫々が巻取られることでループ
が収束し、両フレーム２２,４２が離間する際には、巻
付けローラ３２により第１索体１８ａ,１８ｂの夫々が
巻戻されることでループが拡開するよう設定される。ま
た調節ネジ３８,連動機構４４および巻付けローラ３２
等のネジのピッチ、歯数、直径等は、ループにおける内
径部を上面から視た状態において常に略真円となるよう
設定されている。As shown in FIG. 1, a drive gear 62 and an adjusting means serving as adjusting means are provided at an end of the adjusting screw 38 projecting outwardly from the housing frame 24 (opposite to the side facing the first frame 22). An adjustment handle 40 is provided. Also,
The driven gear 6 has an end protruding outward from the housing frame 24 of the shaft body 34 for rotating the winding roller 32.
The driving gear 62 and the driven gear 64 are connected to each other by an interlocking mechanism 44 that meshes and connects a plurality of gears rotatably disposed on the housing frame 24. That is, by rotating the adjustment handle 40 in the forward and reverse directions and moving the first frame 22 and the second frame 42 toward and away from each other, the shaft body 34 rotates in the forward and reverse directions and The loop formed by the elastic plate 12 is converged and expanded via the winding roller 32 and the first cords 18a and 18b. In addition, both frames 22,
When the frames 42 and 42 are close to each other, the loop is converged by the winding of the first ropes 18a and 18b by the winding roller 32. When the frames 22 and 42 are separated from each other, the winding rollers 32 and Is set so that the loop is expanded by rewinding each of the first cable bodies 18a and 18b. The adjusting screw 38, the interlocking mechanism 44 and the winding roller 32
The pitch, the number of teeth, the diameter, and the like of the screw are set so that the inner diameter portion of the loop is substantially a perfect circle when viewed from above.
【００１５】前記第２フレーム４２には、前記高さ調節
機構１６を構成する段付きローラ５６が回転自在に配設
され、該ローラ５６の小径ローラ部(小径ローラ)５６ａ
に一端が係止されると共に所要回数だけ巻回された第２
索体(別の索体)５８の他端が、前記支持部材５０の第２
フレーム４２から下方に垂下する下端に連結されてい
る。また段付きローラ５６の大径ローラ部(大径ローラ)
５６ｂに一端が係止されると共に所要回数だけ巻回され
た第３索体(更に別の索体)６０の他端が、前記右保持部
材２０ｂに連結されている。なお、段付きローラ５６に
対する第２索体５８および第３索体６０の巻回方向は、
該ローラ５６が図３において時計方向に回転すると、第
２索体５８が小径ローラ部５６ａから巻戻されると共に
第３索体６０が大径ローラ部５６ｂに巻取られ、段付き
ローラ５６が反時計方向に回転すると、第２索体５８が
小径ローラ部５６ａに巻取られると共に第３索体６０が
大径ローラ部５６ｂから巻戻されるよう設定される。ま
た支持部材５０は、弾性板材１２の弾性作用下に、常に
は下方に向けて付勢されて段付きローラ５６に対し時計
方向への回転力を付与するようになっている。すなわ
ち、第１フレーム２２と第２フレーム４２とを相互に近
接した際には、第３索体６０が大径ローラ部５６ｂに巻
取られると共に第２索体５８が小径ローラ部５６ａから
巻戻されることで支持部材５０が下降し、第１フレーム
２２と第２フレーム４２とを相互に離間した際には、第
３索体６０が大径ローラ部５６ｂから巻戻されると共に
第２索体５８が小径ローラ部５６ａに巻取られることで
支持部材５０が上昇するよう構成される。また小径ロー
ラ部５６ａと大径ローラ部５６ｂとの直径比は、前記保
持部材２０ａ,２０ｂまで下方傾斜するよう設定された
ループが、製袋サイズが大〜小の間で変更された際に、
筒状フィルムｆの蛇行、シワが発生しない良好な製袋ラ
インが形成されるループ形状となる高さ位置に支持部材
５０が位置決めされるよう設定される。これにより、前
記弾性部材１２で形成されるループの収束および拡開に
伴って、両板片１２ａ,１２ｂの摺接部分における支持
部材５０での支持位置が昇降調節されてループを常に真
円に保持するようになっている。On the second frame 42, a stepped roller 56 constituting the height adjusting mechanism 16 is rotatably disposed, and a small-diameter roller portion (small-diameter roller) 56a of the roller 56 is provided.
One end of which is locked and wound the required number of times
The other end of the cord (another cord) 58 is the second end of the support member 50.
It is connected to a lower end that hangs downward from the frame 42. The large-diameter roller portion of the stepped roller 56 (large-diameter roller)
The other end of the third cable body (still another cable body) 60, one end of which is locked to 56b and wound a required number of times, is connected to the right holding member 20b. The winding direction of the second cable body 58 and the third cable body 60 around the stepped roller 56 is
When the roller 56 rotates clockwise in FIG. 3, the second rope 58 is rewound from the small-diameter roller portion 56a, and the third rope 60 is wound around the large-diameter roller portion 56b. When rotated in the clockwise direction, the second rope 58 is wound around the small-diameter roller portion 56a, and the third rope 60 is rewound from the large-diameter roller portion 56b. The support member 50 is always urged downward under the elastic action of the elastic plate member 12 to apply a clockwise rotational force to the stepped roller 56. That is, when the first frame 22 and the second frame 42 come close to each other, the third cable 60 is wound around the large-diameter roller portion 56b, and the second cable 58 is unwound from the small-diameter roller portion 56a. When the support member 50 is moved down to separate the first frame 22 and the second frame 42 from each other, the third rope 60 is unwound from the large-diameter roller portion 56b and the second rope 58 Is wound around the small-diameter roller portion 56a so that the support member 50 is raised. The diameter ratio between the small-diameter roller portion 56a and the large-diameter roller portion 56b is such that when a loop set to incline downward to the holding members 20a and 20b is changed from a large to a small bag making size,
The support member 50 is set so as to be positioned at a height position where the tubular film f has a loop shape where a good bag-making line free from wrinkles and wrinkles is formed. Thus, with the convergence and expansion of the loop formed by the elastic member 12, the support position of the support member 50 in the sliding contact portion between the two plate pieces 12a and 12b is adjusted up and down, so that the loop is always a perfect circle. It is designed to hold.
【００１６】[0016]
【実施例の作用】次に、実施例に係る縦型製袋充填機に
おける製袋装置の作用につき説明する。この製袋装置１
０で帯状の包装用フィルムＦ(図３参照)を袋体に成形す
るに際して、先ず製袋サイズを大きくするべく前記弾性
板材１２で形成されるループを拡開させる場合につき説
明する。すなわち、前記移動調節機構３６を構成する調
節ハンドル４０を所要方向に回転すると、該ハンドル４
０と一体的に回転する駆動ギヤ６２の回転は、前記連動
機構４４、従動ギヤ６４および軸体３４を介して巻付け
ローラ３２に伝えられ、該巻付けローラ３２は両第１索
体１８ａ,１８ｂを巻戻す方向に回転される。これによ
り、巻付けローラ３２から巻戻された前記両第１索体１
８ａ,１８ｂが各板片１２ａ,１２ｂの弾性復元力で引張
られ、ループの背面側で摺接している各板片１２ａ,１
２ｂの端部は、前記スリット１３,１３に沿って相互に
近接する方向に移動してループは拡開される。また、前
記調節ネジ３８の回転によって第１フレーム２２と第２
フレーム４２とが相互に離間移動し、前記板片１２ａ,
１２ｂの摺接部分を支持する支持部材５０と、他端部が
固定される保持部材２０ａ,２０ｂとの間隔が広がるこ
とにより、ループの拡開を許容する。Next, the operation of the bag making apparatus in the vertical bag making and filling machine according to the embodiment will be described. This bag making device 1
When forming a band-shaped packaging film F (see FIG. 3) into a bag at 0, the case where the loop formed by the elastic plate 12 is first expanded to increase the bag making size will be described. That is, when the adjustment handle 40 constituting the movement adjustment mechanism 36 is rotated in a required direction, the handle 4
The rotation of the driving gear 62, which rotates integrally with the first cable body 18, is transmitted to the winding roller 32 via the interlocking mechanism 44, the driven gear 64, and the shaft body 34, and the winding roller 32 is connected to both the first ropes 18a, 18b is rotated in the rewinding direction. As a result, the first ropes 1 unwound from the winding roller 32
8a, 18b are pulled by the elastic restoring force of each plate 12a, 12b, and each plate 12a, 1 slidingly contacting on the back side of the loop.
The ends of 2b move in the directions approaching each other along the slits 13, 13 to expand the loop. In addition, the rotation of the adjusting screw 38 causes the first frame 22 and the second frame 22 to rotate.
The frame 42 moves away from each other, and the plate 12a,
The expansion of the loop is permitted by increasing the distance between the support member 50 that supports the sliding contact portion 12b and the holding members 20a and 20b to which the other ends are fixed.
【００１７】また、前記第１フレーム２２と第２フレー
ム４２との離間移動により、前記高さ調節機構１６の段
付きローラ５６が所要方向に回転する。すなわち、段付
きローラ５６の大径ローラ部５６ｂに巻回されて一端部
が前記右保持部材２０ｂに係止されている第３索体６０
が、第２フレーム４２の移動に伴って該大径ローラ部５
６ｂから巻戻され、これによって段付きローラ５６は反
時計方向(図３において)に回転する。これにより、段付
きローラ５６の小径ローラ部５６ａに第２索体５８が巻
取られ、前記弾性板材１２の弾性力によって常に下方に
向けて付勢されている支持部材５０は第２索体５８が巻
取られた分だけ引上げられる。すなわち、支持部材５０
の支持体４６で支持している両板片１２ａ,１２ｂの摺
接部分が所要量だけ上昇する。The stepped roller 56 of the height adjusting mechanism 16 rotates in a required direction due to the separation movement between the first frame 22 and the second frame 42. That is, the third cable body 60 wound around the large-diameter roller portion 56b of the stepped roller 56 and having one end locked to the right holding member 20b.
However, as the second frame 42 moves, the large-diameter roller 5
6b, whereby the stepped roller 56 rotates counterclockwise (in FIG. 3). As a result, the second cable body 58 is wound around the small-diameter roller portion 56a of the stepped roller 56, and the support member 50 constantly urged downward by the elastic force of the elastic plate member 12 becomes the second cable body 58. Is pulled up by the amount wound up. That is, the support member 50
The sliding contact portion between the two plate pieces 12a and 12b supported by the support member 46 of this type rises by a required amount.
【００１８】前述したように、移動調節機構３６によっ
て作動される巻付けローラ３２によるループの拡開量
と、第１フレーム２２と第２フレーム４２との移動量お
よび支持部材５０の昇降量とは比例する関係に設定され
ているから、図１に示す如く、拡開されたループは真円
に保持される。また支持部材５０の昇降により両板片１
２ａ,１２ｂの摺接部分の高さを、前記保持部材２０ａ,
２０ｂまで下方傾斜するよう設定されたループが、筒状
フィルムｆの蛇行、シワが発生しない良好な製袋ライン
が形成されるループ形状となる高さ位置に変えることに
より、該ループの傾斜状態を一定に保持することがで
き、包装用フィルムＦの筒状成形を円滑に行なうことが
可能となる。すなわち、図示しない供給源から製袋装置
１０に供給された帯状の包装用フィルムＦは、図３に示
す如く、ループを形成している弾性板材１２の長手方向
の一方の端縁部に沿って内側に案内される結果として、
所望直径の筒状フィルムｆに製袋される。また筒状フィ
ルムｆの長手方向の重合端縁部ｆａは、前記左右の保持
部材２０ａ,２０ｂの間隙Ｇにより、ループの直径方向
に突出した状態で案内される。従って、重合端縁部ｆａ
にセンターシールを施す際に、該重合端縁部ｆａをガイ
ド部材等により筒状フィルムｆの直径方向に起こす必要
はない。As described above, the amount of opening of the loop by the winding roller 32 operated by the movement adjusting mechanism 36, the amount of movement between the first frame 22 and the second frame 42, and the amount of movement of the support member 50 are as follows. Since the relationship is set to be proportional, the expanded loop is held in a perfect circle as shown in FIG. Further, both plate pieces 1 are moved up and down by the support member 50.
The height of the sliding contact portion of 2a, 12b is adjusted by the holding member 20a,
By changing the loop set to be inclined downward to 20b to a height position where a good bag-making line where the meandering and wrinkles of the cylindrical film f are not generated is formed, the inclined state of the loop is changed. It can be kept constant, and the cylindrical molding of the packaging film F can be performed smoothly. That is, as shown in FIG. 3, the band-shaped packaging film F supplied from the supply source (not shown) to the bag making apparatus 10 extends along one longitudinal edge of the elastic plate 12 forming the loop. As a result of being guided inside,
The bag is formed into a cylindrical film f having a desired diameter. Further, the overlapped edge portion fa in the longitudinal direction of the tubular film f is guided by the gap G between the left and right holding members 20a and 20b so as to protrude in the diameter direction of the loop. Therefore, the overlapping edge part fa
When the center seal is performed, it is not necessary to raise the overlapping edge portion fa in the diameter direction of the tubular film f by a guide member or the like.
【００１９】次に、被包装物品の形状等に応じて製袋サ
イズを小さくするべくループを収束させる場合には、前
記調節ハンドル４０を逆方向に回転することで、該ハン
ドル４０の回転に伴って前記巻付けローラ３２は、両第
１索体１８ａ,１８ｂを巻取る方向に回転される。これ
により、両板片１２ａ,１２ｂの摺動端部が相互に離間
する方向に引張られ、両スリット１３,１３に沿って移
動することで、弾性板材１２で形成されているループは
図５に示すように収束される。また、前記調節ネジ３８
の回転によって第１フレーム２２と第２フレーム４２と
が相互に近接移動し、前記板片１２ａ,１２ｂの摺接部
分を支持する支持部材５０と、他端部が固定される保持
部材２０ａ,２０ｂとの間隔が狭まることにより、ルー
プの収束を許容する。Next, when the loop is converged in order to reduce the bag making size according to the shape of the article to be packaged, the adjustment handle 40 is rotated in the opposite direction, and the Thus, the winding roller 32 is rotated in a direction of winding both the first cords 18a and 18b. As a result, the sliding ends of the two plate pieces 12a and 12b are pulled in a direction away from each other and move along the slits 13 and 13, so that the loop formed by the elastic plate material 12 is shown in FIG. It is converged as shown. The adjusting screw 38
The first frame 22 and the second frame 42 move close to each other due to the rotation of the support members 50 supporting the sliding portions of the plate pieces 12a and 12b, and the holding members 20a and 20b to which the other ends are fixed. Is narrowed, thereby allowing convergence of the loop.
【００２０】また、前記第１フレーム２２と第２フレー
ム４２との近接移動により、前記高さ調節機構１６の段
付きローラ５６が所要方向に回転する。すなわち、段付
きローラ５６の大径ローラ部５６ｂに巻回されて一端部
が前記右保持部材２０ｂに係止されている第３索体６０
が、第２フレーム４２の移動に伴って該大径ローラ部５
６ｂに巻取られ、これによって段付きローラ５６は時計
方向(図３において)に回転する。これにより、段付きロ
ーラ５６の小径ローラ部５６ａから第２索体５８が巻戻
され、前記支持部材５０は第２索体５８が巻戻された分
だけ弾性板材１２の弾性力によって下降される。すなわ
ち、支持部材５０の支持体４６で支持している両板片１
２ａ,１２ｂの摺接部分が所要量だけ下降する。なお、
支持部材５０を下降させる際の段付きローラ５６の回転
は、弾性板材１２の弾性力により支持部材５０を下方に
向けて付勢する力によってなされる。The stepped roller 56 of the height adjusting mechanism 16 rotates in a required direction due to the close movement of the first frame 22 and the second frame 42. That is, the third cable body 60 wound around the large-diameter roller portion 56b of the stepped roller 56 and having one end locked to the right holding member 20b.
However, as the second frame 42 moves, the large-diameter roller 5
6b, whereby the stepped roller 56 rotates clockwise (in FIG. 3). As a result, the second cable body 58 is rewound from the small-diameter roller portion 56a of the stepped roller 56, and the support member 50 is lowered by the elastic force of the elastic plate 12 by the amount of the second cable body 58 being rewound. . That is, the two plate pieces 1 supported by the support 46 of the support member 50
The sliding portions 2a and 12b are lowered by a required amount. In addition,
The rotation of the stepped roller 56 at the time of lowering the support member 50 is performed by a force for urging the support member 50 downward by the elastic force of the elastic plate 12.
【００２１】前述したように、移動調節機構３６によっ
て作動される巻付けローラ３２によるループの収束量
と、第１フレーム２２と第２フレーム４２との移動量お
よび支持部材５０の昇降量とは比例する関係に設定され
ているから、図５に示す如く、収束されたループは前述
した拡開時と相似形の真円に保持される。そして、この
場合においても支持部材５０の昇降により両板片１２
ａ,１２ｂの摺接部分の高さを、前記保持部材２０ａ,２
０ｂまで下方傾斜するよう設定されたループが、筒状フ
ィルムｆの蛇行、シワが発生しない良好な製袋ラインが
形成されるループ形状となる高さ位置に変えることによ
り、該ループの傾斜状態を一定に保持することができ
る。As described above, the amount of convergence of the loop by the winding roller 32 operated by the movement adjusting mechanism 36 is proportional to the amount of movement between the first frame 22 and the second frame 42 and the amount of elevation of the support member 50. Therefore, as shown in FIG. 5, the converged loop is held in a perfect circle similar to that at the time of the above-described expansion. In this case as well, the lifting and lowering of the support member 50 causes the
a, 12b, the height of the sliding contact portion is determined by the holding members 20a, 2
By changing the loop set so as to be inclined downward to 0b to a height position where a good bag-making line where the meandering and wrinkles of the tubular film f are not generated is formed, the inclined state of the loop is changed. It can be kept constant.
【００２２】すなわち実施例の製袋装置１０では、ルー
プを形成する弾性板材１２を左右に分割した２枚の板片
１２ａ,１２ｂで構成し、両板片１２ａ,１２ａの一端部
を近接・離間移動することでループの収束および拡開を
行なうよう構成したので、製袋ラインの左右バランス等
を崩すことなく製袋サイズに応じた調節を行なうことが
でき、筒状フィルムｆの蛇行等による製袋不良の発生を
好適に防止し得る。また移動調節機構３６を操作するだ
けで、ループの収束、拡開に伴い該ループを真円に保持
するための一対のフレーム２２,４２の近接・離間移動
および支持部材５０の昇降動を行なうことができ、調節
作業を極めて簡略化し得る。しかも、ループを収束・拡
開しても、常に真円状態の相似形となるよう各部材の移
動量等が比例する関係に設定されているから、熟練者で
なくても簡単に正確な調節を行ない得る。また、ループ
により筒状成形された筒状フィルムｆの重合端縁部ｆａ
を案内する一対の保持部材２０ａ,２０ｂの間隙Ｇは、
ループ前側で直径方向に臨んでいるので、該重合端縁部
ｆａを製袋中心に合わせて直径方向に突出させることが
でき、重合端縁部ｆａは筒状フィルムｆの外周縁に沿っ
て折り曲げられない。従って、筒状フィルムｆの重合端
縁部ｆａを直径方向に起こすためのガイド部材を設ける
必要はなく、コストを低減し得る。That is, in the bag making apparatus 10 of the embodiment, the elastic plate 12 forming the loop is constituted by two plate pieces 12a and 12b which are divided into right and left, and one end of both plate pieces 12a and 12a is moved toward and away from each other. Since the convergence and expansion of the loop are performed by moving, adjustment according to the bag making size can be performed without losing the left-right balance of the bag making line and the like. The occurrence of bag defects can be suitably prevented. In addition, by simply operating the movement adjusting mechanism 36, the pair of frames 22, 42 for moving the pair of frames 22, 42 to move the pair of frames 22 and 42 close and away and to move the support member 50 up and down for keeping the loop in a perfect circle as the loop converges and expands. And the adjustment operation can be greatly simplified. Moreover, even if the loop is converged or expanded, the movement amount of each member is set to be proportional so that the shape always becomes a similar shape of a perfect circle, so that even a non-skilled person can easily perform accurate adjustment. Can be performed. Further, the overlapping edge portion fa of the tubular film f formed into a tubular shape by the loop.
The gap G between the pair of holding members 20a and 20b for guiding
Since it faces the diametric direction at the front side of the loop, it is possible to project the overlapping edge portion fa in the diametric direction so as to match the bag making center, and the overlapping edge portion fa is bent along the outer peripheral edge of the tubular film f. I can't. Therefore, there is no need to provide a guide member for raising the overlapping edge portion fa of the tubular film f in the diameter direction, and the cost can be reduced.
【００２３】前述した実施例において、板片に所定間隔
毎に索体ガイドを取付け、第１索体を索体ガイドによっ
て常にループ形状に沿って案内させることで、該第１索
体のスリットや板片外への脱落を防止する処置を施すこ
とが最も好ましい。なお、実施例では、支持部材を昇降
調節する高さ調節機構の段付きローラを回転させる手段
として第２索体と第３索体とを用いた場合につき説明し
たが、何れか一方の索体または両索体に代えて、ラック
とピニオンとの組合わせ、その他の連繋機構を適宜に採
用することが可能である。また、小径ローラ部と大径ロ
ーラ部とが形成される段付きローラに代えて、第２索体
または第３索体が係止される別々の小径ローラおよび大
径ローラを一体的に回転するよう構成してもよい。更
に、左右の第１索体を別々の巻付けローラに掛止した
り、その巻付けローラを左右別々の位置に配置すること
も可能である。In the above-described embodiment, a rope guide is attached to the plate piece at predetermined intervals, and the first rope is always guided along the loop shape by the rope guide, so that the slit or the like of the first rope is formed. It is most preferable to take measures to prevent the pieces from falling off the plate. In the embodiment, the case where the second cable and the third cable are used as means for rotating the stepped roller of the height adjusting mechanism for adjusting the height of the support member has been described. Alternatively, a combination of a rack and a pinion and other linking mechanisms can be appropriately adopted instead of the both cords. Further, instead of the stepped roller in which the small-diameter roller portion and the large-diameter roller portion are formed, separate small-diameter rollers and a large-diameter roller on which the second or third rope body is locked are integrally rotated. It may be configured as follows. Furthermore, it is also possible to hook the left and right first ropes on separate winding rollers, and to arrange the winding rollers at separate left and right positions.
【００２４】[0024]
【発明の効果】以上説明した如く、本発明に係る縦型製
袋充填機における製袋装置によれば、ループを形成する
弾性板材を分割した２枚の板片で構成し、両板片の一端
部を近接・離間移動することでループの収束および拡開
を行なうよう構成したので、製袋ラインの左右バランス
等を崩すことなく製袋サイズに応じた調節を行なうこと
ができ、筒状フィルムの蛇行等による製袋不良の発生を
好適に防止し得る。また、製袋サイズの変更に際し１つ
の調節個所を操作するのみで、ループの収束および拡開
ができるため、調節の簡素化および調節作業時間の短縮
化を図れる。しかもこの収束および拡開が一定の比率で
もって行なわれるため、製袋ラインの左右バランス等が
崩れることはなく、筒状フィルムの蛇行等による製袋不
良の発生を防止し得る。またループに供給された筒状フ
ィルムの重合端縁部が、製袋中心に合わせて突出するよ
う設定できるので、合掌シールを施すに際して、製袋サ
イズ毎に設けられる専用の製袋装置に変えて本願発明の
製袋装置を設けるようにした場合であっても何等改造等
を行なう必要が無く、兼用性を持たせることができる、
等の利点を有する。As described above, according to the bag making apparatus in the vertical bag making and filling machine according to the present invention, the elastic plate material forming the loop is constituted by two divided plate pieces, and the two Since the loop is converged and expanded by moving one end part close to / separate from the other, adjustment according to the bag making size can be performed without breaking the left / right balance of the bag making line, etc. In this way, it is possible to preferably prevent the occurrence of bag making failure due to meandering or the like. Further, the loop can be converged and expanded only by operating one adjustment point when changing the bag making size, so that the adjustment can be simplified and the adjustment operation time can be shortened. In addition, since the convergence and the expansion are performed at a fixed ratio, the left-right balance of the bag-making line is not lost, and it is possible to prevent the bag-making defect due to the meandering of the tubular film. In addition, since the overlapping edge of the tubular film supplied to the loop can be set so as to protrude in accordance with the center of bag making, when applying a joint seal, change to a dedicated bag making device provided for each bag making size. Even if it is arranged to provide the bag making device of the present invention, there is no need to perform any remodeling and the like, it is possible to have a versatility,
And so on.
【図１】本発明の好適な実施例に係る縦型製袋充填機の
製袋装置においてループを拡開した状態で示す平面図で
ある。FIG. 1 is a plan view showing a state in which a loop is expanded in a bag making apparatus of a vertical bag making and filling machine according to a preferred embodiment of the present invention.
【図２】実施例に係る製袋装置を示す正面図である。FIG. 2 is a front view showing the bag making apparatus according to the embodiment.
【図３】実施例に係る製袋装置を一部縦断して示す側面
図である。FIG. 3 is a side view showing the bag making apparatus according to the embodiment in a partially longitudinal section.
【図４】実施例に係る製袋装置の板片と第１索体との係
止部を示す要部縦断側面図である。FIG. 4 is a vertical sectional side view of a main part showing a locking portion between the plate piece and the first cord of the bag making apparatus according to the embodiment.
【図５】実施例に係る製袋装置においてループを収束し
た状態で示す平面図である。FIG. 5 is a plan view showing a state in which a loop is converged in the bag making apparatus according to the embodiment.
１２ 弾性板材 １２ａ 左板片 １２ｂ 右板片 １３ スリット
(摺動手段) １４ａ 左摺動部材(摺動手段) １４ｂ 右摺動部
材(摺動手段) １６ 高さ調節機構 １８ａ 左第１索
体 １８ｂ 右第１索体 ２０ａ 左保持部
材 ２０ｂ 右保持部材 ２２ 第１フレー
ム ３２ 巻付けローラ ３６ 移動調節機
構 ３８ 調節ネジ ４０ 調節ハンド
ル(調節手段) ４２ 第２フレーム ４４ 連動機構 ５０ 支持部材 ５６ 段付きロー
ラ ５６ａ 小径ローラ部(小径ローラ) ５６ｂ 大径ロー
ラ部(大径ローラ) ５８ 第２索体(別の索体) ６０ 第３索体
(更に別の索体) ７０ 雌ネジ部材 ７２ 雌ネジ部材 Ｆ 包装用フィルム ｆ 筒状フィルム ｆａ 重合端縁部 Ｇ 間隙12 Elastic plate 12a Left plate 12b Right plate 13 Slit
(Sliding means) 14a Left sliding member (sliding means) 14b Right sliding member (sliding means) 16 Height adjustment mechanism 18a Left first rope 18b Right first rope 20a Left holding member 20b Right holding member 22 First frame 32 Winding roller 36 Movement adjustment mechanism 38 Adjustment screw 40 Adjustment handle (adjustment means) 42 Second frame 44 Interlocking mechanism 50 Support member 56 Stepped roller 56a Small diameter roller (small diameter roller) 56b Large diameter roller ( Large diameter roller) 58 2nd cord (another cord) 60 3rd cord
(Further cable body) 70 Female thread member 72 Female thread member F Packaging film f Cylindrical film fa Overlapping edge G G
Claims (7)
るループを弾性板材(12)にて形成し、該ループを製袋サ
イズに応じて自在に収束または拡開することで無段階に
サイズ調節可能な縦型製袋充填機における製袋装置にお
いて、 前記弾性板材(12)を構成し、ループの周方向に分割され
た２つの板片(12a,12b)と、 前記両板片(12a,12b)の長手方向における一端部側を相
互に摺接状態でスライド可能に支持する摺動手段(13,14
a,14b)と、 前記両板片(12a,12b)の摺接部分と対峙する位置に設け
られ、前記ループで筒状成形される筒状フィルム(f)に
おける重合端縁部(fa)の通過を許容する間隙(G)が形成
されると共に、各板片(12a,12b)の長手方向における他
端部が固定される保持部材(20a,20b)と、 前記両板片(12a,12b)の摺接部分を相互にスライド可能
に支持し、該摺接部分の高さ調節を行なうべく昇降移動
する支持部材(50)と、 前記両板片(12a,12b)の摺接部分における端部に一端が
夫々係止され、反対の板片(12a,12b)に沿って引張られ
る一対の索体(18a,18b)とからなり、 前記一対の索体(18a,18b)を同一量だけ反対方向に移動
することにより前記ループが収束、拡開するよう構成し
たことを特徴とする縦型製袋充填機における製袋装置。1. A stepless loop is formed by forming a loop for cylindrically forming a band-shaped packaging film (F) with an elastic plate material (12) and converging or expanding the loop freely according to the bag making size. In a bag making apparatus in a vertical bag making and filling machine, the size of which is adjustable, the elastic plate (12) is constituted, and two plate pieces (12a, 12b) divided in a circumferential direction of a loop; Sliding means (13, 14) for slidably supporting one end side in the longitudinal direction of (12a, 12b) in sliding contact with each other;
a, 14b), provided at a position facing the sliding portion of the two plate pieces (12a, 12b), of the overlapped edge portion (fa) in the tubular film (f) formed into a tubular shape by the loop. A gap (G) that allows passage is formed, and a holding member (20a, 20b) to which the other end in the longitudinal direction of each plate piece (12a, 12b) is fixed, and the two plate pieces (12a, 12b). ) Are slidably supported by each other, and a supporting member (50) that moves up and down to adjust the height of the sliding contact portion, and an end of the sliding contact portion between the two plate pieces (12a, 12b). And a pair of ropes (18a, 18b) each of which is locked at one end and pulled along opposite plate pieces (12a, 12b). A bag making apparatus in a vertical bag making and filling machine, wherein the loop is converged and expanded by moving in the opposite direction.
手方向に沿って形成されたスリット(13,13)と、各板片
(12a,12b)の長手方向における一端部に対応的に配設さ
れ、他方の各板片(12b,12a)を前記スリット(13,13)を介
して摺動自在に支持する摺動部材(14a,14b)とから構成
される請求項１記載の縦型製袋充填機における製袋装
置。2. The sliding means comprises a slit (13, 13) formed along the longitudinal direction of each plate piece (12a, 12b),
(12a, 12b) a sliding member (corresponding to one end in the longitudinal direction), which slidably supports the other plate pieces (12b, 12a) via the slits (13, 13). The bag making apparatus in the vertical bag making and filling machine according to claim 1, comprising:
々は巻付けローラ(32)に掛止され、該巻付けローラ(32)
を所定方向に回転することにより、一対の索体(18a,18
b)の巻取りあるいは巻戻しを行なうよう構成した請求項
１または２記載の縦型製袋充填機における製袋装置。3. Each of the other ends of the pair of cords (18a, 18b) is hung on a winding roller (32), and the winding roller (32)
By rotating in a predetermined direction, a pair of ropes (18a, 18
3. A bag making apparatus in a vertical bag making and filling machine according to claim 1, wherein the winding or rewinding of b) is performed.
１フレーム(22)と前記支持部材(50)が昇降自在に配設さ
れる第２フレーム(42)とを相互に近接・離間移動させる
移動調節機構(36)と、 前記第１フレーム(22)と一体的に移動可能に設けられる
前記巻付けローラ(32)と移動調節機構(36)とを連繋接続
して巻付けローラ(32)を回転させる連動機構(44)と、 前記第２フレーム(42)に配設され、該第２フレーム(42)
と第１フレーム(22)との近接・離間移動に連動して、前
記支持部材(50)を昇降移動させる高さ調節機構(16)とを
備え、 前記移動調節機構(36)、連動機構(44)および高さ調節機
構(16)の夫々の作動量について、前記ループの収束、拡
開に伴う第１フレーム(22)と第２フレーム(42)との相対
位置および支持部材(50)の高さ位置が所定の比例関係の
もとで調節されるよう設定されている請求項３記載の縦
型製袋充填機における製袋装置。4. A first frame (22) on which the holding members (20a, 20b) are disposed and a second frame (42) on which the support members (50) are disposed so as to be able to move up and down are brought close to each other. A movement adjusting mechanism (36) for separating and moving, and a winding roller (32) and a movement adjusting mechanism (36) which are provided so as to be movable integrally with the first frame (22); An interlocking mechanism (44) for rotating a roller (32); and a second frame (42) disposed on the second frame (42).
A height adjustment mechanism (16) for moving the support member (50) up and down in conjunction with the movement of the support member (50) toward and away from the first frame (22), and the movement adjustment mechanism (36) and the interlocking mechanism ( 44 ) and the operation amount of the height adjusting mechanism ( 16 ), the relative position between the first frame (22) and the second frame (42) and the support member (50) of the support member (50) accompanying the convergence and expansion of the loop. 4. A bag making apparatus in a vertical bag making and filling machine according to claim 3, wherein the height position is set so as to be adjusted in a predetermined proportional relationship.
の雄ネジが螺刻された調節ネジ(38)を備え、該調節ネジ
(38)が第１フレーム(22)の雌ネジ部材(70)および第２フ
レーム(42)の雌ネジ部材(72)に螺挿され、この調節ネジ
(38)の一端部に配設した調節手段(40)を正逆方向に回転
することで両フレーム(22,42)が相互に近接・離間移動す
るよう構成した請求項４記載の縦型製袋充填機における
製袋装置。5. The movement adjusting mechanism (36) includes an adjusting screw (38) in which external threads in opposite directions are threaded.
(38) is screwed into the female screw member (70) of the first frame (22) and the female screw member (72) of the second frame (42).
5. The vertical product according to claim 4, wherein the adjusting means disposed at one end of the frame is rotated in the forward and reverse directions so that the frames move toward and away from each other. Bag making device in bag filling machine.
た複数のギアを相互に噛合連結して構成され、前記移動
調節機構(36)により両フレーム(22,42)を相互に近接し
た際には前記一対の索体(18a,18b)を巻取るよう巻付け
ローラ(32)を回転してループを収束させ、両フレーム(2
2,42)を相互に離間した際には一対の索体(18a,18b)を巻
戻すよう巻付けローラ(32)を回転してループを拡開する
ようにした請求項４または５記載の縦型製袋充填機にお
ける製袋装置。6. The interlocking mechanism (44) is formed by interlocking a plurality of gears set to a required diameter with each other, and connects the two frames (22, 42) to each other by the movement adjusting mechanism (36). When approaching, the winding roller (32) is rotated to wind the pair of ropes (18a, 18b) to converge the loop, and the two frames (2
The loop according to claim 4 or 5, wherein the winding roller (32) is rotated so as to rewind the pair of cords (18a, 18b) when the two (42) are separated from each other, thereby expanding the loop. Bag making device in vertical bag making and filling machine.
可能な小径ローラ(56a)および大径ローラ(56b)が前記第
２フレーム(42)に回転自在に配設され、前記板片(12a,1
2b)に係止される索体(18a,18b)とは別の索体(58)の一端
が小径ローラ(56a)に巻回可能に係止されると共にその
他端が前記支持部材(50)の下端に連結され、前記別の索
体(58)とは異なる更に別の索体(60)の一端が大径ローラ
(56b)に巻回可能に係止されると共にその他端が前記第
１フレーム(22)に連結され、両フレーム(22,42)を相互
に近接した際に、更に別の索体(60)が大径ローラ(56b)
に巻取られると共に別の索体(58)が小径ローラ(56a)か
ら巻戻されることで支持部材(50)が下降し、両フレーム
(22,42)を相互に離間した際に、更に別の索体(60)が大
径ローラ(56b)から巻戻されると共に別の索体(58)が小
径ローラ(56a)に巻取られることで支持部材(50)が上昇
するよう構成される請求項４〜６の何れかに記載の縦型
製袋充填機における製袋装置。7. The height adjusting mechanism (16) includes a small-diameter roller (56a) and a large-diameter roller (56b), which are integrally rotatable, rotatably disposed on the second frame (42). Plate (12a, 1
One end of a rope body (58) different from the rope body (18a, 18b) locked to the 2b) is rotatably locked to the small-diameter roller (56a) and the other end is the support member (50). One end of a further rope body (60) different from the another rope body (58) is connected to the lower end of the large diameter roller.
(56b), and the other end is connected to the first frame (22), and when the two frames (22, 42) come close to each other, another cable body (60) Is a large diameter roller (56b)
And the other member (58) is rewound from the small-diameter roller (56a), whereby the support member (50) descends,
When the (22, 42) are separated from each other, another cable body (60) is unwound from the large-diameter roller (56b) and another cable body (58) is wound around the small-diameter roller (56a). 7. A bag making apparatus in a vertical bag making and filling machine according to claim 4, wherein the support member (50) is configured to rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31597497A JP3205796B2 (en) | 1997-10-31 | 1997-10-31 | Bag making device in vertical bag making and filling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31597497A JP3205796B2 (en) | 1997-10-31 | 1997-10-31 | Bag making device in vertical bag making and filling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11130007A JPH11130007A (en) | 1999-05-18 |
| JP3205796B2 true JP3205796B2 (en) | 2001-09-04 |
Family
ID=18071829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31597497A Expired - Fee Related JP3205796B2 (en) | 1997-10-31 | 1997-10-31 | Bag making device in vertical bag making and filling machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3205796B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6649860B2 (en) | 1999-12-13 | 2003-11-18 | Nippon Steel Corporation | Transfer type plasma heating anode |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5318045B2 (en) * | 2010-07-30 | 2013-10-16 | 株式会社フジキカイ | Bag making device in horizontal bag making and filling machine |
-
1997
- 1997-10-31 JP JP31597497A patent/JP3205796B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6649860B2 (en) | 1999-12-13 | 2003-11-18 | Nippon Steel Corporation | Transfer type plasma heating anode |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11130007A (en) | 1999-05-18 |
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