JPH1158299A - Cutting device for plastic film - Google Patents

Cutting device for plastic film

Info

Publication number
JPH1158299A
JPH1158299A JP24182997A JP24182997A JPH1158299A JP H1158299 A JPH1158299 A JP H1158299A JP 24182997 A JP24182997 A JP 24182997A JP 24182997 A JP24182997 A JP 24182997A JP H1158299 A JPH1158299 A JP H1158299A
Authority
JP
Japan
Prior art keywords
cutting blade
cutting
plastic film
plate
blade
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.)
Granted
Application number
JP24182997A
Other languages
Japanese (ja)
Other versions
JP3295022B2 (en
Inventor
Koji Saeki
康治 佐伯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP24182997A priority Critical patent/JP3295022B2/en
Publication of JPH1158299A publication Critical patent/JPH1158299A/en
Application granted granted Critical
Publication of JP3295022B2 publication Critical patent/JP3295022B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To draw a clean cutting line for a long period of time regardless of the thickness of a film, knee strength, etc., in extremely simple structure and to maintain the longevity of a cutting blade for a long periof of time. SOLUTION: This cutting device is constituted to be furnished with a cutter to cut a plastic film. In this case, a protruded line 40 similar to a flat surface outline of a cutting blade part 70 and wider than the width of the cutting blade is provided on an upper surface of a cutting blade receiver 4 made of a hard body, and a presser mechanism 8 having a contractible plate 8b to press the plastic film F on the protruded line is arranged on the cutter side.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はプラスチックフィル
ムに主として不連続切断線を加工するための装置に関す
る。
The present invention relates to an apparatus for mainly processing discontinuous cutting lines in a plastic film.

【0002】[0002]

【従来の技術】ゴミ袋や買い物袋で代表されるプラスチ
ックフィルム製の袋Pは、図6(a)や図7(a)のよ
うに結縛用や持ち運びのための突片部pを有しているこ
とが多い。プラスチックフイルム袋はガゼット付きまた
はガゼツトなしのチューブ状プラスチックフイルムを所
定ピッチずつ送り、熱シールと切断を行って作られるの
で、前記突片部pもこのインライン製袋方式で作られこ
とが好ましい。かかる突片や取手類をインラインで各送
りピッチごとに形成する場合には、一般に、図6(b)
や図7(b)のようにチューブ状プラスチックフイルム
Fに所望の平面形状の切断線Cを施すことが必要であ
る。しかし、従来の切断装置は、フイルムの移動経路上
にスポンジで代表される可縮性弾性体からなる受台を配
し、この受台の上方に切断刃を吊持したプレス機構を配
し、フイルムのピッチ送りが停止された状態でプレス機
構を作動して切断刃を受台に強接させることで切断線を
形成していた。
2. Description of the Related Art A bag P made of a plastic film represented by a garbage bag or a shopping bag has a protruding piece p for binding or carrying as shown in FIGS. 6 (a) and 7 (a). Often do. Since the plastic film bag is formed by feeding a tubular plastic film with or without gusset at a predetermined pitch and performing heat sealing and cutting, it is preferable that the protruding piece p is also formed by this in-line bag-making method. When such projections and handles are formed in-line for each feed pitch, generally, FIG.
7B, it is necessary to make a cutting line C having a desired planar shape on the tubular plastic film F. However, the conventional cutting device arranges a pedestal made of a compressible elastic body represented by a sponge on the moving path of the film, and arranges a press mechanism that suspends a cutting blade above the pedestal, The cutting line is formed by operating the press mechanism while the pitch feed of the film is stopped, and forcing the cutting blade into contact with the receiving table.

【0003】しかしながらこのような構造では切断刃の
刃先が短期間で摩耗しやすいため、高価な切断刃を頻繁
に交換しなければならず、その切断刃交換のあいだ製袋
作業ができなくなるため、生産性が低下するという問題
があった。この対策として、切断刃の平面輪郭に対応す
る輪郭の挿入溝を受台に形成しておいても、受台はスポ
ンジなどの弾性体からなっており、毎回の切断刃下降時
にフイルムが挿入溝開口の弾性材質からなるエッジに局
部的に強接するため、切断加工回数の増加とともに前記
エッジ部分にだれや摩耗が生ずる。このため、フイルム
がピンと緊張されず切断刃の下降時にフイルムが切断刃
とともに挿入溝内にV状に押し込まれ、溝内の奥の部位
で切断刃がフイルムに接して切断線が入れられることに
なる。しかも、切断カスが挿入溝の底に次第に堆積して
切断刃の進入する十分な深さを維持することが困難にな
る。このため、確実にきれいな切断線が入れられなくな
るとともに、やはり切断刃の切れ味が早期に低下すると
いう問題がある。また、チューブ状プラスチックフィル
ムの加工法として、フイルム幅方向やフイルム長手方向
にスリット状の切断線を入れたりすることも多いが、こ
の場合にも、従来では前述したような構造の切断装置が
用いられていたため、きれいな切断線を長期にわたって
確実、安定的に加工することが困難であった。
However, in such a structure, the cutting edge of the cutting blade is liable to be worn in a short period of time, so that the expensive cutting blade must be replaced frequently, and the bag making operation cannot be performed during the replacement of the cutting blade. There was a problem that productivity fell. As a countermeasure, even if an insertion groove having a contour corresponding to the planar contour of the cutting blade is formed in the receiving table, the receiving table is made of an elastic body such as sponge, and the film is inserted each time the cutting blade descends. Since the openings are locally strongly contacted with the edge made of an elastic material, the edge portion is dripped or worn with an increase in the number of cutting processes. For this reason, the film is pushed into the insertion groove together with the cutting blade in a V-shape when the cutting blade descends without the tension of the film against the pin, and the cutting blade comes into contact with the film at a deep portion in the groove to cut the cutting line. Become. Moreover, the cutting debris gradually accumulates at the bottom of the insertion groove, making it difficult to maintain a sufficient depth for the cutting blade to enter. For this reason, there is a problem that a clean cutting line cannot be reliably inserted and the sharpness of the cutting blade is also reduced at an early stage. In addition, as a processing method of a tubular plastic film, a slit-shaped cutting line is often inserted in a film width direction or a film longitudinal direction. In this case, a cutting device having the above-described structure is conventionally used. Therefore, it has been difficult to reliably and stably process a clean cutting line for a long period of time.

【0004】[0004]

【発明が解決しようとする課題】本発明は前記のような
課題を解決するために創案されたもので、その目的とす
るところは、極めて簡単な構造により、フイルムの厚さ
や腰の強さ等にかかわりなく長期に渡ってきれいな切断
線を施すことができ、切断刃の寿命を長く保つことがで
きるプラスチックフィルム切断装置を提供することにあ
る。
DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to provide a film having a very simple structure, such as film thickness and waist strength. Regardless, it is an object of the present invention to provide a plastic film cutting apparatus capable of providing a clean cutting line for a long period of time and keeping the life of the cutting blade long.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
本発明は、切断刃受と該切断刃受と対峙し駆動手段によ
り昇降されプラスチックフイルムを切断する切断刃具と
を備えたプレス式切断装置において、切断刃受が硬質体
からなり、上面に切刃部の平面的な輪郭と相似しかつ切
刃刃幅よりも広い突起条を設けるとともに、該突起条の
頂面から下方に切刃部の挿脱を許容する刃逃がし溝を形
成しており、切断刃具側には、プラスチックフイルムを
前記プラスチックフイルム受け機構に押し付けるための
可縮板を有する押え機構を配した構成としている。前記
押え機構は、切断刃具を固定したマウント台から吊持さ
れた硬質な押圧板とこれの表面に張設された可縮板、前
記マウント台と前記押圧板との間に介装され押圧板を付
勢する弾性材とを有し、押圧板と可縮板が切刃部の平面
輪郭と略一致し切刃部の自由な挿脱を許す条溝を有して
いる構成が好適である。
SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a press-type cutting apparatus comprising a cutting blade receiver and a cutting blade tool which faces the cutting blade receiver and which is raised and lowered by a driving means to cut a plastic film. In the above, the cutting blade receiver is made of a hard body, and a projection that is similar to the planar contour of the cutting edge and is wider than the cutting edge width is provided on the upper surface, and the cutting edge is formed downward from the top surface of the projection. The cutting blade side is provided with a pressing mechanism having a shrinkable plate for pressing the plastic film against the plastic film receiving mechanism. The press mechanism includes a hard press plate suspended from a mount table to which the cutting blade is fixed, a compressible plate stretched on the surface of the hard press plate, and a press plate interposed between the mount table and the press plate. It is preferable that the pressing plate and the compressible plate have a groove that substantially matches the plane contour of the cutting blade portion and allows free insertion and removal of the cutting blade portion. .

【0006】[0006]

【作用】本発明による切断装置は、通常、製袋機のフイ
ルム送り経路上に設置される。プラスチックフイルム
は、送りにより切断刃受とプラスチックフイルム受け機
構の上に乗せられる。この状態で駆動手段を作動する
と、切刃部よりも突出している押え機構の可縮板がプラ
スチックフイルムに接し、これを切断刃受の表面から突
出している突起条の頂面に押しつける。突起条が硬質で
あるため可縮板は弾性変形して突起条の形状に倣うた
め、プラスチックフイルムは摩擦的に位置保持されると
同時に、可縮板の圧縮変形によって切断予定部位の近傍
は、プラスチックフイルム固有の弾力性によりテンショ
ンがかけられ、突起条の頂面上にピンと張られる。つい
で、切断刃具が下降することにより切刃部は突起条の刃
逃がし溝に進入するが、その進入開始時に前記のように
ピンとテンションがかけられた状態のプラスチックフイ
ルムに切刃が当たるため、確実にかつきれいに切断線が
施される。それとともにテンションがかけられた状態で
切刃部がプラスチックフイルムに接して切断線が入れら
れるため、切断刃具の切れ味が長期にわたって持続し、
寿命を長くすることができる。
The cutting device according to the present invention is usually installed on a film feed path of a bag making machine. The plastic film is placed on the cutting blade receiver and the plastic film receiving mechanism by feeding. When the driving means is operated in this state, the compressible plate of the pressing mechanism projecting from the cutting blade portion comes into contact with the plastic film, and presses the plastic film against the top surface of the projecting strip projecting from the surface of the cutting blade receiver. Because the protruding strip is hard, the compressible plate elastically deforms and follows the shape of the protruding strip, so that the plastic film is frictionally held at the same time, and at the same time, the vicinity of the portion to be cut by the compressive deformation of the compressible plate is The tension is applied by the elasticity inherent in the plastic film, and the plastic film is stretched on the top surface. Then, when the cutting blade tool descends, the cutting blade portion enters the blade escape groove of the protrusion, but at the start of the penetration, the cutting blade hits the plastic film in a state where the pin and the tension are applied as described above, so And the cutting line is neatly applied. At the same time, the cutting edge is in contact with the plastic film and the cutting line is cut with tension applied, so the cutting edge of the cutting tool lasts for a long time,
Life can be extended.

【0007】[0007]

【発明の実施の形態】以下本発明の実施例を添付図面に
基いて説明する。図1ないし図4は本発明によるプラス
チックフィルムの切断装置の実施例を示している。1は
ベースであり、製袋機機体のフイルム送り経路上に固定
される、該ベース1には少なくとも4隅に支柱2が立設
されており、それら支柱2に天板3を固定することでフ
レームが構成されている。このフレームの前記ベース1
上にチューブ状のプラスチックフイルムFの幅Wよりも
適度に大きな幅を有する切断刃受(受けダイ)4が固定
されている。前記天板3にはアクチュエータ5が配され
ており、その作動部50にはマウント台6が固定され、
該マウント台6は4隅に設けたガイドピン60が天板3
に貫挿されることにより平衡を保ちながら昇降可能とな
っている。アクチュエータ5はこの実施例では流体圧シ
リンダが用いられているが、これに限定されるものでは
なく、クランク機構など任意である。マウント台6の下
側には切断刃具7が固定されるとともに、切断刃具7の
近傍にはチューブ状のプラスチックフイルムFを前記切
断刃受4に押圧するための押え機構8が取り付けられて
いる。
Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show an embodiment of a plastic film cutting apparatus according to the present invention. Reference numeral 1 denotes a base, which is fixed on the film feed path of the bag making machine body. The base 1 has uprights 2 at at least four corners, and a top plate 3 is fixed to the uprights 2. A frame is configured. The base 1 of this frame
A cutting blade receiver (receiving die) 4 having a width that is appropriately larger than the width W of the tubular plastic film F is fixed thereon. An actuator 5 is disposed on the top plate 3, and a mounting table 6 is fixed to an operation portion 50 of the actuator 5.
The mounting table 6 has guide pins 60 provided at the four corners and the top plate 3.
It is possible to ascend and descend while maintaining the balance by being inserted through. In this embodiment, a fluid pressure cylinder is used as the actuator 5, but the actuator 5 is not limited to this and may be an arbitrary one such as a crank mechanism. A cutting blade 7 is fixed below the mount base 6, and a pressing mechanism 8 for pressing the tubular plastic film F against the cutting blade receiver 4 is attached near the cutting blade 7.

【0008】切断刃具7の刃形状や輪郭形状は任意であ
る。この実施例では、図6(a)に示すような突部p,
pを有するプラスチック袋得るため、切断刃具7は図2
(c)のように全体として平面略W状ないしは縦E状の
輪廓をなしており、下端の切刃部70は、この例では連
続切断用切刃部分70aと不連続切断用切刃部分70b
が一連に組み合わされた形態となっている。連続切断用
切刃部分70aは、チューブ状プラスチックフイルムF
の送り方向と平行な方向の4部位(Wの左右の立上り線
部分と内側の立上り線部分)に形成され、不連続切断用
切刃部分70bは、チューブ状プラスチックフイルムF
の送り方向と交差する方向の3部位(Wの各立上り線部
分の基部)に形成されている。 前記連続切断用切刃部
分70aは、図2(d)のように正面からみて山谷が連
続した形状をなし、不連続切断用切刃部分70bは、各
谷の付け根に所要幅のスリット700を有しており、こ
のスリット700によりチューブに切断されていない部
分が残存させられるものである。
[0008] The blade shape and contour shape of the cutting blade 7 are arbitrary. In this embodiment, the protrusions p and p as shown in FIG.
In order to obtain a plastic bag with p, the cutting blade 7 is
As shown in (c), the whole has a substantially W-shaped or vertical E-shaped contour, and the cutting edge portion 70 at the lower end is a continuous cutting edge portion 70a and a discontinuous cutting edge portion 70b in this example.
Are combined in a series. The cutting blade portion 70a for continuous cutting is made of a tubular plastic film F.
Are formed at four portions (the right and left rising lines and the inner rising line of W) in the direction parallel to the feed direction, and the cutting blade portion 70b for discontinuous cutting is formed of a tubular plastic film F.
(The base of each rising line portion of W) in the direction intersecting with the feeding direction of. As shown in FIG. 2D, the continuous cutting edge portion 70a has a shape in which peaks and valleys are continuous as viewed from the front, and the discontinuous cutting edge portion 70b has a slit 700 having a required width at the base of each valley. The slit 700 allows the portion not cut to the tube to remain.

【0009】なお、チューブ状プラスチックフイルムF
が図示するもののようなガゼット付きの場合、チューブ
幅方向で最外側の部分に対する連続切断用切刃部分70
aは図6(b)のようにガゼットfg,fgの折り畳み
先端ラインよりも外側に位置するように設けられること
が好ましい。切断刃具7は前記切刃部よりも上域の部分
がブロック状のマウント部材60に取り付けねじによっ
て固定されている。マウント部材60はマウント台6に
固定されており、平面的に切断刃具7と同輪廓をなして
いる。
[0009] The tubular plastic film F
When a gusset is used as shown in the figure, the continuous cutting edge portion 70 for the outermost portion in the tube width direction is used.
It is preferable that a is provided outside the folding tip line of the gussets fg, fg as shown in FIG. The cutting blade 7 is fixed to a block-shaped mounting member 60 by a mounting screw in a region above the cutting blade. The mount member 60 is fixed to the mount base 6 and has the same contour as the cutting blade 7 in plan view.

【0010】切断刃受4は金属などの硬質剛性材料から
なっており、チューブ状のプラスチックフイルムFより
も幅が広い盤状をなしている。そして、上面すなわち切
断刃具7と対向する上面41は基本的に平坦面となって
いるが、前記切断刃具7の切刃部70に対応する領域だ
けが、切刃部70の平面輪郭と相似した平面輪郭形状の
突起条40が設けられている。前記突起条40は、フイ
ルムを横にピンと張ることができるようにするため、切
断刃具7の切刃部70の刃幅に対してたとえば50倍以
上の幅を有し、頂面400は直線状ないしごくゆるい曲
率状をなし、そうした頂面400の両縁は比較的なだら
かな曲線401,401によって切断刃受4の上面41
に連接されている。前記頂面400から下方に切刃部7
0の刃幅よりも幅の広い刃逃げ溝42を有している。そ
の刃逃げ溝42は切断刃受4を貫いており、切断刃受4
の下のベース1には刃逃げ溝42に対応するカス収容溝
100が形成されている。
The cutting blade receiver 4 is made of a hard rigid material such as metal, and has a disk shape wider than the tubular plastic film F. The upper surface, that is, the upper surface 41 facing the cutting blade 7 is basically a flat surface, but only a region corresponding to the cutting blade 70 of the cutting blade 7 is similar to the plane contour of the cutting blade 70. A projection 40 having a planar contour shape is provided. The protruding strip 40 has a width, for example, 50 times or more the blade width of the cutting blade 70 of the cutting blade 7 so that the film can be stretched laterally. The edges of the top surface 400 have a relatively gentle curvature, and the both edges of the top surface 400 are relatively gentle curves 401, 401, so that the upper surface 41 of the cutting blade receiver 4 is formed.
Is linked to The cutting blade portion 7 extends downward from the top surface 400.
It has a blade relief groove 42 wider than the zero blade width. The blade escape groove 42 penetrates the cutting blade receiver 4, and the cutting blade receiver 4
In the base 1 below the groove 1, a waste accommodating groove 100 corresponding to the blade escape groove 42 is formed.

【0011】押え機構8は、前記突起条40と協働して
プラスチックフイルムにテンションを形成するためのも
ので、切断刃受4に対向する押圧板8aと、マウント台
6を貫通し下端に前記押圧板8aを固定した複数本の吊
軸8dと、押圧板8aとマウント台6の間に介装され押
圧板8aを付勢するコイルバネやウレタンなどの弾性材
8cとを有し、押圧板8aと可縮板8bは常態において
切刃部の刃先よりも下方に位置するようにセットされて
いる。前記押圧板8aは、金属板等の硬質剛性材料から
なり、押圧板8aの下面には所要厚さの可縮板8bが張
設されている。可縮板8bとしては適度に軟質の耐摩耗
性ゴム板が好適であるが、場合によってはスポンジでも
よい。前記押圧板8aと可縮板8bは、図2(b)と図
3のように、切刃部70の平面輪郭と略一致し切刃部7
0の自由な挿脱を許す条溝80,81を有している。弾
性材8cは前記弾性部材8bのばね力(弾性)よりも適
度に勝るようなばね力のものが使用されている。
The pressing mechanism 8 is for forming tension on the plastic film in cooperation with the projection 40, and penetrates the pressing plate 8a facing the cutting blade receiver 4 and the mounting table 6 and has the lower end at the lower end. A plurality of suspension shafts 8d to which the pressing plate 8a is fixed, and an elastic material 8c such as a coil spring or urethane interposed between the pressing plate 8a and the mount base 6 to bias the pressing plate 8a. And the compressible plate 8b are set so as to be located below the cutting edge of the cutting blade portion in a normal state. The pressing plate 8a is made of a hard rigid material such as a metal plate, and a compressible plate 8b having a required thickness is stretched on the lower surface of the pressing plate 8a. As the compressible plate 8b, a moderately soft wear-resistant rubber plate is suitable, but in some cases, a sponge may be used. As shown in FIGS. 2B and 3, the pressing plate 8a and the compressible plate 8b substantially coincide with the plane contour of the cutting blade 70, and
It has grooves 80 and 81 that allow zero free insertion and removal. The elastic member 8c has a spring force that appropriately exceeds the spring force (elasticity) of the elastic member 8b.

【0012】上記態様は本発明のあくまでも例であり、
切刃部70は連続切断用切刃部分70aと不連続切断用
切刃部分70bの組み合わされた複合型であるという限
定はなく、連続切断用切刃部分70aだけ、あるいは図
7(a)の製品を得る場合には図7(b)のように不連
続切断用切刃部分70bからなっていてもよい。また、
連続切断用切刃部分も図示するような三角状の連続した
ものでなく、スリット形成用のナイフ刃となっていてい
るものを含む。また、切刃部70の平面輪郭も限定され
ず、直線状、円形状などを含む。この場合には突起条4
0と押え機構8の条溝80,81はそれぞれ切刃部の平
面輪郭に対応したものが形成される。
The above embodiments are merely examples of the present invention,
The cutting blade portion 70 is not limited to a composite type in which the cutting blade portion 70a for continuous cutting and the cutting blade portion 70b for discontinuous cutting are combined, and only the cutting blade portion 70a for continuous cutting or FIG. When a product is obtained, it may be composed of a discontinuous cutting blade portion 70b as shown in FIG. 7 (b). Also,
The cutting blade portion for continuous cutting is not a triangular continuous blade as shown in the figure, but includes a blade serving as a knife blade for slit formation. In addition, the planar contour of the cutting blade 70 is not limited, and includes a linear shape, a circular shape, and the like. In this case, the protrusion 4
0 and the grooves 80, 81 of the presser mechanism 8 are formed so as to correspond to the plane contours of the cutting blades.

【0013】図5は本発明による切断線形成装置の適用
例を示している。aは製袋機の機体であり、これの端部
または後方にはチューブ状のプラスチックフィルムFを
コイル状に巻回した原反Aを装架する架台cが配されて
いる。bは前記機体aの上に装備された本発明による切
断装置であり、前記架台cから引き出されたチューブ状
のプラスチックフィルムFの移動経路上に設けられ、該
チューブ状のプラスチックフィルムFに平面所要形状た
とえばW状、U状など切断線Cを施すようになってい
る。dは前記切断装置bの下流に配された熱シール機構
であり、この例ではロールd1とこれに対向して進退自
在な熱刃d2とからなっていて、W状ないしU状の切断
線Cの下流端ないしその近傍にフイルム幅方向に沿って
2線または1線のシールmを施すようになっている。
FIG. 5 shows an application example of the cutting line forming apparatus according to the present invention. a is a body of a bag making machine, and a frame c for mounting a raw material A in which a tubular plastic film F is wound in a coil shape is disposed at an end portion or a rear portion thereof. Reference numeral b denotes a cutting device according to the present invention mounted on the airframe a, which is provided on a moving path of the tubular plastic film F drawn out of the gantry c, and requires a flat surface on the tubular plastic film F. A cutting line C having a shape such as a W shape or a U shape is formed. Reference numeral d denotes a heat sealing mechanism disposed downstream of the cutting device b. In this example, the heat sealing mechanism comprises a roll d1 and a heat blade d2 which can move forward and backward in opposition to the roll d1, and has a W-shaped or U-shaped cutting line C. A two- or one-line seal m is applied along the film width direction at or near the downstream end of the film.

【0014】eは前記熱シール機構のさらに下流に設け
られたカット機構であり、前記シールmの近傍(2線シ
ールにあってはシール線間)をフイルム幅方向に切断し
て袋体とするためのものである。カット機構eはこの例
では固定刃e1とこれと協働する可動刃e2からなって
いる。fはこのカット機構の近傍に設けたカット片係留
機構であり、前記のように施した切断線Cで囲まれた領
域kを袋体から切り離すため、前記領域kを係留するた
めのもので、たとえば突き刺しピンf1とこれに切断線
Cで囲まれた領域kを押圧する昇降自在な押圧部材f2
からなっている。gはカット片係留機構fの下流に設け
られた折り畳み機構であり、一対のピンチローラg1と
これの隙間に進退する押込み板g2とを有している。こ
の折り畳み機構gは、前記カット片係留機構fが作動し
て切断線Cで囲まれた領域kを係留させた状態のもとで
作動し、押込み板g2により袋体の長手方向中間部を一
対のピンチローラg1に押し入れることにより袋体を2
つ折りすると同時に引張り力を与え、切断線Cで囲まれ
た領域kを切断線Cに沿って強制的に切断する機能を果
たす。なお、本発明装置の使用位置は、図5の例のよう
に熱シール機構dよりも上流である場合に限定されず、
熱シール機構dの下流に配置して使用されることも含む
のはいうまでもない。
Reference numeral e denotes a cutting mechanism provided further downstream of the heat sealing mechanism. The vicinity of the seal m (between the sealing lines in the case of a two-line seal) is cut in the film width direction to form a bag. It is for. In this example, the cutting mechanism e includes a fixed blade e1 and a movable blade e2 cooperating therewith. f is a cut piece mooring mechanism provided in the vicinity of the cutting mechanism, and is for mooring the area k in order to separate the area k surrounded by the cutting line C applied as described above from the bag body, For example, a piercing pin f1 and a vertically movable pressing member f2 for pressing an area k surrounded by a cutting line C.
Consists of g is a folding mechanism provided downstream of the cut piece mooring mechanism f, and has a pair of pinch rollers g1 and a pushing plate g2 which advances and retreats into a gap between them. The folding mechanism g operates in a state where the cut piece mooring mechanism f is operated and the area k surrounded by the cutting line C is moored, and a pair of longitudinally intermediate portions of the bag body are pushed by the pushing plate g2. The bag body by pushing it into the pinch roller g1 of
At the same time as the folding, a tensile force is applied to perform a function of forcibly cutting the region k surrounded by the cutting line C along the cutting line C. The use position of the device of the present invention is not limited to the case where the device is located upstream of the heat sealing mechanism d as in the example of FIG.
Needless to say, this includes being used by being arranged downstream of the heat sealing mechanism d.

【0015】[0015]

【実施例の作用】次に本発明の実施態様の動作と作用を
説明する。第1態様においては、図1(a)のように切
断刃具7と押え機構8が待機位置にある状態で、原反A
から引き出されたチューブ状のプラスチックフイルムF
は、切断刃受4の上に導入され、これを通過するように
機体aの上で前方に延出させられ、ピッチ送り機構に挟
持させられる。この状態が図4(a)であり、チューブ
状のプラスチックフイルムFは切断刃受4の突起条40
に乗せられる。この状態で切断線加工は開始される。ま
ず、アクチュエータ5が作動することによりマウント台
6が降下し、それにより押圧板8aの下面の可縮板8b
がチューブ状のプラスチックフイルムFの上面に接し、
摩擦係数が高い可縮板8bとの摩擦で滑り止めされる。
このときには切断刃具7の切刃部70は、チューブ状プ
ラスチックフイルムFに接触しておらず、押え機構8の
押圧板8aに形成されている条溝80を通って待機して
いる。
Next, the operation and operation of the embodiment of the present invention will be described. In the first mode, as shown in FIG. 1 (a), when the cutting blade 7 and the pressing mechanism 8 are at the standby position, the raw material A
Tube-shaped plastic film F drawn from
Is introduced on the cutting blade receiver 4, is extended forward on the machine body a so as to pass therethrough, and is held by the pitch feed mechanism. This state is shown in FIG. 4A, in which the tubular plastic film F is provided with the projections 40 of the cutting blade receiver 4.
It is put on. In this state, cutting line processing is started. First, when the actuator 5 is operated, the mount base 6 is lowered, whereby the compressible plate 8b on the lower surface of the pressing plate 8a is moved.
Is in contact with the upper surface of the tubular plastic film F,
Slip is prevented by friction with the compressible plate 8b having a high friction coefficient.
At this time, the cutting blade portion 70 of the cutting blade 7 is not in contact with the tubular plastic film F, and stands by through the groove 80 formed in the pressing plate 8a of the pressing mechanism 8.

【0016】引き続くマウント台6の下降により、押圧
板8aは弾性材8cのばね力によりチューブ状のプラス
チックフイルムFを切断刃受4に押圧する。これが図4
(b)の状態であり、押圧板8aの下面の可縮板8b
は、押圧板8aを付勢している弾性材8cよりも弾性力
が小さいため、可縮板8bは突起条40の頂面400と
同一レベルにあった状態から圧縮変形され始め、これに
よりチューブ状のプラスチックフイルムFの切断線加工
領域fは可縮板8bと突起条40とでしっかりと挟持さ
れる。同時に、上記のように切断線加工領域以外のプラ
スチックフイルム領域は可縮板8bに接して下げられる
ため、相対的に突起条40が突出する形となり、これに
よりチューブ状のプラスチックフイルムFに引張り力が
生じ、切断線加工予定領域fはその弾力性により突起条
40の頂面400でテンションがかけられ、ピンと緊張
した状態になる。また切断線加工予定領域以外の領域は
平坦状となっている可縮板8bと切断刃受4の上面41
とで挟持され、これにより滑り止めされる。そしてこの
状態で引き続きマウント台6が下降すると、切断刃具7
の切刃部70が突起条40の上端に到って、前記のよう
にテンション付加状態の切断線加工予定領域fに接し、
さらに図4(c)のように突起条40の頂面400から
刃逃がし溝42に進入することにより切刃部70がチュ
ーブ状のプラスチックフイルムFの肉厚を貫く。このた
め、チューブ状プラスチックフイルムFが厚くても、薄
くても、また腰が弱くても、確実にかつきれいに目的と
する切断線が加工される。
As the mount base 6 continues to descend, the pressing plate 8a presses the tubular plastic film F against the cutting blade receiver 4 by the spring force of the elastic member 8c. This is Figure 4
(B), the compressible plate 8b on the lower surface of the pressing plate 8a
Has a smaller elastic force than the elastic member 8c that urges the pressing plate 8a, so that the compressible plate 8b starts to be compressed and deformed from a state where it is at the same level as the top surface 400 of the projection 40. The cutting line processing region f of the plastic film F is firmly held between the compressible plate 8b and the projection 40. At the same time, as described above, the plastic film area other than the cutting line processing area is lowered in contact with the compressible plate 8b, so that the protrusions 40 are relatively protruded. Is generated, and the cut line processing scheduled area f is tensioned on the top surface 400 of the projection 40 by its elasticity, so that the area f is in tension with the pin. In addition, the region other than the cutting line processing planned region is flat and has a flattenable plate 8 b and the upper surface 41 of the cutting blade receiver 4.
, And is thereby prevented from slipping. Then, in this state, when the mount base 6 continues to be lowered, the cutting blade 7
Cutting edge portion 70 reaches the upper end of the projection 40 and comes into contact with the cutting line processing scheduled area f in the tension added state as described above,
Further, as shown in FIG. 4C, the cutting blade 70 penetrates the thickness of the tubular plastic film F by entering the blade escape groove 42 from the top surface 400 of the projection 40. For this reason, even if the tubular plastic film F is thick, thin, or stiff, a desired cutting line can be processed reliably and neatly.

【0017】切刃部70は刃逃げ溝42に所要深さ進入
した後、アクチュエータ5の上昇動作により刃逃げ溝4
2から脱出し、次いで、押圧板8aが上昇してチューブ
状のプラスチックフイルムFから離間することにより1
サイクルの加工が終わる。上記加工により生じたカスは
刃逃げ溝42からベース1のカス収容溝100に落下す
る。したがってカスの堆積による切刃部70の進入制限
が生じない。本発明においては、突起条40の外側に不
沈自在なフイルム受け機構を有しないため構造が非常に
簡単である。
After the cutting edge portion 70 has entered the blade escape groove 42 to a required depth, the ascending operation of the actuator 5 causes the blade escape groove 4 to move.
2 and then the pressing plate 8a rises to separate from the tubular plastic film F,
Cycle processing ends. The scum generated by the above-described processing falls from the blade escape groove 42 into the scum storage groove 100 of the base 1. Therefore, there is no restriction on the entry of the cutting blade 70 due to the accumulation of scum. In the present invention, the structure is very simple because there is no non-separable film receiving mechanism outside the projection 40.

【0018】図5の例では、チューブ状プラスチックフ
イルムFには全体として平面Wないし縦E輪郭をなした
切断線Cが加工される。その切断線の状態はこの例で
は、山谷の連続した連続切断用切刃部分70aにより図
6(b)のようにチューブ送り方向と平行な方向の4箇
所の連続切断線c1,c2,c3,c4が加工される。
しかし、チューブ送り方向と交差する方向においては、
不連続切断用切刃部分70bのスリット部分では切断が
行われないため、チューブ送り方向と交差する方向は3
箇所に不連続切断線c5,c6,c7が加工される。そ
して、かかる切断線加工以後は、ピッチ送り機構が作動
されてチューブ状のプラスチックフイルムFは前方に移
送され、熱シール機構dにより切断線Cの近傍にフイル
ム幅方向に底シールmが形成され、次いでフイルム幅方
向をカット機構eにより切離し切断され(nは切断分離
線)、袋素体となる。次いで、カット片係留機構fによ
り切断目を施した領域内が係留され、この状態で折り畳
み機構gが作動し、袋素体が2つ折りされることによる
引張り力で切断線Cは完全に切断されて袋素体から分離
除去される。したがって、チューブ状フイルムから一貫
連続的に図6や図7に示すようなプラスチック袋を製造
することができる。
In the example shown in FIG. 5, a cutting line C having a plane W or a vertical E contour is formed on the tubular plastic film F as a whole. In this example, the state of the cutting line is four continuous cutting lines c1, c2, c3 in a direction parallel to the tube feeding direction as shown in FIG. c4 is processed.
However, in the direction crossing the tube feed direction,
Since cutting is not performed at the slit portion of the cutting blade portion 70b for discontinuous cutting, the direction intersecting the tube feeding direction is 3
The discontinuous cutting lines c5, c6, and c7 are processed at the locations. After the cutting line processing, the pitch feed mechanism is operated, the tubular plastic film F is transferred forward, and the bottom seal m is formed in the film width direction near the cutting line C by the heat sealing mechanism d. Next, the film is cut and cut in the width direction by a cutting mechanism e (n is a cutting separation line) to form a bag element. Next, the inside of the cut area is moored by the cut piece mooring mechanism f, and in this state, the folding mechanism g operates, and the cutting line C is completely cut by the tensile force generated by folding the bag body into two. Separated from the bag body. Therefore, a plastic bag as shown in FIGS. 6 and 7 can be manufactured continuously and continuously from the tubular film.

【0019】[0019]

【発明の効果】以上説明した本発明の請求項1と2によ
れば、切断刃受4に硬質な突起条40が設けられてお
り、切断刃具側には、プラスチックフイルムFを前記突
起条40に押し付けるための可縮板8bを有する押え機
構8が配されているので、突起条40に対する可縮板8
bの弾性変形により切断予定領域のフイルム部分が常に
突起条40の頂面400で強制的にテンションが付与さ
れ、この状態下で切断刃具7の切刃部70をフルムに接
触させて切断加工が行われる。このため、比較的簡単な
構造により、フイルムの厚さや腰の強さ等にかかわりな
く長期に渡ってきれいな切断線を施すことができ、切断
刃の寿命を長く保つことができる。しかも構造が非常に
簡単で部品数も少なくてすみ安価に実施できるなどのす
ぐれた効果が得られる。
According to the first and second aspects of the present invention described above, the cutting blade receiver 4 is provided with the hard projections 40, and the plastic film F is provided on the cutting blade side. Since the pressing mechanism 8 having the compressible plate 8b for pressing against the protrusions 40 is disposed, the
Due to the elastic deformation of b, a tension is always applied to the film portion in the region to be cut by the top surface 400 of the projection 40, and in this state, the cutting blade 70 of the cutting blade 7 is brought into contact with the film to perform the cutting process. Done. Therefore, with a relatively simple structure, a clean cutting line can be formed over a long period of time irrespective of the thickness of the film and the strength of the waist, and the life of the cutting blade can be maintained long. In addition, excellent effects such as a very simple structure, a small number of parts, and an inexpensive implementation can be obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】(a)は本発明によるプラスチックフィルムの
切断装置の実施例を待機状態で示す縦断正面図、(b)
は同じく切断加工時の状態で示す縦断正面図である。
FIG. 1A is a longitudinal sectional front view showing an embodiment of a cutting device for a plastic film according to the present invention in a standby state, and FIG.
FIG. 4 is a longitudinal sectional front view similarly showing a state at the time of cutting.

【図2】(a)は図1(a)のX−X線に沿う断面図、
(b)は図1(a)のY−Y線に沿う断面図、(c)は
図1(a)のZ−Z線に沿う断面図、(e)は本発明で
使用される切断刃具の一例を示す斜視図である。
2A is a cross-sectional view taken along line XX of FIG. 1A,
1B is a sectional view taken along line YY in FIG. 1A, FIG. 1C is a sectional view taken along line ZZ in FIG. 1A, and FIG. 1E is a cutting blade used in the present invention. It is a perspective view which shows an example.

【図3】図1(a)の拡大図である。FIG. 3 is an enlarged view of FIG.

【図4】(a)は切断刃具下降開始状態を示す部分拡大
図、(b)はプラスチックフィルム押え始め状態を示す
部分拡大図、(c)は切断刃具による切断状態を示す部
分拡大図である。
4A is a partially enlarged view showing a cutting blade lowering start state, FIG. 4B is a partially enlarged view showing a plastic film pressing start state, and FIG. 4C is a partially enlarged view showing a cutting state by the cutting blade. .

【図5】(a)は本発明を適用した製袋機の一例を示す
側面図、(b)は(a)におけるプラスチックフィルム
の状態変化を示す説明図である。
FIG. 5A is a side view showing an example of a bag making machine to which the present invention is applied, and FIG. 5B is an explanatory diagram showing a state change of the plastic film in FIG.

【図6】(a)は本発明による切断加工例を示すプラス
チックフィルムの平面図、(b)は得られた袋の平面図
である。
FIG. 6A is a plan view of a plastic film showing an example of a cutting process according to the present invention, and FIG. 6B is a plan view of an obtained bag.

【図7】(a)は本発明による他の切断加工例を示すプ
ラスチックフィルムの平面図、(b)は得られた袋の平
面図である。
FIG. 7 (a) is a plan view of a plastic film showing another example of the cutting process according to the present invention, and FIG. 7 (b) is a plan view of the obtained bag.

【符号の説明】[Explanation of symbols]

4 切断刃受 6 マウント台 7 切断刃具 8 押え機構 8a 押圧板 8b 可縮板 8c 弾性材 40 突起条 42 刃逃がし溝 70 切刃部 80 条溝 REFERENCE SIGNS LIST 4 cutting blade holder 6 mount base 7 cutting blade tool 8 holding mechanism 8 a pressing plate 8 b shrinkable plate 8 c elastic material 40 protrusion 42 blade escape groove 70 cutting blade 80 groove

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】切断刃受と該切断刃受と対峙し駆動手段に
より昇降されプラスチックフイルムを切断する切断刃具
とを備えたプレス式切断装置において、切断刃受4が硬
質体からなり、上面に切刃部70の平面的な輪郭と相似
しかつ切断刃幅よりも広い突起条40を設けるととも
に、該突起条40の頂面から下方に切刃部70の挿脱を
許容する刃逃がし溝42を形成しており、切断刃具側に
は、プラスチックフイルムFを前記突起条40に押し付
けるための可縮板8bを有する押え機構8を配したこと
を特徴とするプラスチックフィルムの切断装置。
1. A press-type cutting apparatus comprising a cutting blade receiver and a cutting blade tool which faces the cutting blade receiver and moves up and down by a driving means to cut a plastic film. A protruding ridge 40 similar to the planar contour of the cutting blade 70 and wider than the cutting blade width is provided, and a blade escape groove 42 for allowing insertion and removal of the cutting blade 70 downward from the top surface of the protrusion 40. And a pressing mechanism 8 having a compressible plate 8b for pressing the plastic film F against the protruding strip 40 is provided on the cutting blade side.
【請求項2】押え機構8が、切断刃具7を固定したマウ
ント台6から吊持された硬質な押圧板8aとこれの表面
に張設された可縮板8bと、前記マウント台6と前記押
圧板8aとの間に介装され押圧板8aを付勢する弾性材
8cとを有し、押圧板8aと可縮板8bが切刃部70の
平面輪郭と略一致し切刃部の自由な挿脱を許す条溝80
それぞれを有している請求項1に記載のプラスチックフ
ィルムの切断装置。
2. A pressing mechanism 8 includes a hard pressing plate 8a suspended from a mounting table 6 to which a cutting blade 7 is fixed, a compressible plate 8b stretched on the surface of the pressing plate 8a, the mounting table 6 and the An elastic member 8c interposed between the pressing plate 8a and the urging member 8c for urging the pressing plate 8a. The pressing plate 8a and the compressible plate 8b substantially coincide with the plane contour of the cutting blade 70, and the cutting blade is free. Groove 80 that allows easy insertion and removal
The plastic film cutting device according to claim 1, further comprising:
JP24182997A 1997-08-22 1997-08-22 Plastic film cutting equipment Expired - Fee Related JP3295022B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24182997A JP3295022B2 (en) 1997-08-22 1997-08-22 Plastic film cutting equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24182997A JP3295022B2 (en) 1997-08-22 1997-08-22 Plastic film cutting equipment

Publications (2)

Publication Number Publication Date
JPH1158299A true JPH1158299A (en) 1999-03-02
JP3295022B2 JP3295022B2 (en) 2002-06-24

Family

ID=17080123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24182997A Expired - Fee Related JP3295022B2 (en) 1997-08-22 1997-08-22 Plastic film cutting equipment

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009513387A (en) * 2005-10-26 2009-04-02 マッケラー,ジョン Die cutting method with flat plate of package blank by female cutting plate with channel
JP2011251361A (en) * 2010-06-01 2011-12-15 Kyoei Print Giken Kk Punching device of sheet member
WO2012039583A2 (en) * 2010-09-20 2012-03-29 Lee Hwan Paperboard die-cutting apparatus having a guide plate for protecting cut surfaces
KR101180690B1 (en) 2010-10-19 2012-09-10 주식회사동양강철 Punching mold for edge bar of LED-TV
JP2012228755A (en) * 2011-04-27 2012-11-22 Make A Box:Kk Face plate for sheet punching die, and sheet punching method
KR101242003B1 (en) 2011-07-07 2013-03-11 주식회사동양강철 manufacture apparatus for dove tail of bottom bar in edge type LED display
JP2015071199A (en) * 2013-10-02 2015-04-16 株式会社片山抜型製作所 Cutting device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009513387A (en) * 2005-10-26 2009-04-02 マッケラー,ジョン Die cutting method with flat plate of package blank by female cutting plate with channel
JP2011251361A (en) * 2010-06-01 2011-12-15 Kyoei Print Giken Kk Punching device of sheet member
WO2012039583A2 (en) * 2010-09-20 2012-03-29 Lee Hwan Paperboard die-cutting apparatus having a guide plate for protecting cut surfaces
WO2012039583A3 (en) * 2010-09-20 2012-07-19 Lee Hwan Paperboard die-cutting apparatus having a guide plate for protecting cut surfaces
KR101180690B1 (en) 2010-10-19 2012-09-10 주식회사동양강철 Punching mold for edge bar of LED-TV
JP2012228755A (en) * 2011-04-27 2012-11-22 Make A Box:Kk Face plate for sheet punching die, and sheet punching method
KR101242003B1 (en) 2011-07-07 2013-03-11 주식회사동양강철 manufacture apparatus for dove tail of bottom bar in edge type LED display
JP2015071199A (en) * 2013-10-02 2015-04-16 株式会社片山抜型製作所 Cutting device

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