JPH08119208A - Center sealer - Google Patents

Center sealer

Info

Publication number
JPH08119208A
JPH08119208A JP25185194A JP25185194A JPH08119208A JP H08119208 A JPH08119208 A JP H08119208A JP 25185194 A JP25185194 A JP 25185194A JP 25185194 A JP25185194 A JP 25185194A JP H08119208 A JPH08119208 A JP H08119208A
Authority
JP
Japan
Prior art keywords
support arm
bar
film
overlapping parts
heater
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.)
Pending
Application number
JP25185194A
Other languages
Japanese (ja)
Inventor
Isao Kobayashi
功 小林
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.)
Omori Machinery Co Ltd
Original Assignee
Omori Machinery Co Ltd
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 Omori Machinery Co Ltd filed Critical Omori Machinery Co Ltd
Priority to JP25185194A priority Critical patent/JPH08119208A/en
Publication of JPH08119208A publication Critical patent/JPH08119208A/en
Pending legal-status Critical Current

Links

Landscapes

  • Containers And Plastic Fillers For Packaging (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To provide an apparatus which can directly heat and heat-weld overlapping parts of a belt-like film while following their laterally snaking movement and which can prevent travel resistance from varying as much as possible. CONSTITUTION: Overlapping parts 6 of a synthetic film 2 are interposed by a pair of bar heaters 18 from both sides. One of the heaters fixed to a reference support arm 16 is positioned and locked at a reference position by a force applying means 26 and a stopper. Since the other heater fixed to a following support arm 17 is freely swingable in the direction of thickness of the overlapping parts and is in contact with a side of the overlapping parts with a slight force of several grams by adjustment of balance weights 46, 48, the heater can smoothly swing while maintaining the contact with the overlapping parts so as to continue to directly heat the parts even if the parts laterally displace during travel according to their opening degree.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、長手方向の両側縁が
重合されて筒状をなして走行される帯状合成樹脂フィル
ムのその重合部を、発熱体を内蔵して対面配置された一
対のバー式ヒータ間に挟んで連続的に熱溶着させる自動
包装機械のセンターシーラ装置の改良に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to a pair of facing portions, each of which has a heating element built-in, and has a superposed portion of a strip-shaped synthetic resin film which is run in a tubular shape by laminating both side edges in the longitudinal direction. The present invention relates to an improvement in a center sealer device of an automatic packaging machine which is sandwiched between bar type heaters and continuously heat-welded.

【0002】[0002]

【従来の技術】従来より、この種の自動包装機械のセン
ターシーラ装置として実公昭51−43966号公報の
ものが知られている。このセンターシーラ装置は、発熱
体が内蔵された一対のバー式ヒータを各々支持アームを
介して回動軸に取り付けて基準位置に開閉可能に対向配
置し、各回動軸の一端にはそれぞれギヤーを固定して相
互に噛合させ、かつこれらのギヤーには回動軸を回転さ
せて一対のバー式ヒータを閉方向に付勢するスプリング
をその付勢力を調節可能に直接あるいは間接的に係合さ
せている。ここで、基準位置にある一対のバー式ヒータ
間には帯状合成樹脂フィルムの重合部が通過できるよう
にその厚みに相応した隙間が形成され、この隙間の寸法
は上記スプリングの付勢力を調節することで調整可能に
なっている。
2. Description of the Related Art Conventionally, as a center sealer device of this type of automatic packaging machine, the one disclosed in Japanese Utility Model Publication No. 51-43966 is known. In this center sealer device, a pair of bar-type heaters each having a built-in heating element are attached to a rotating shaft via support arms, and are arranged so as to be openable / closable at a reference position. A gear is provided at one end of each rotating shaft. The gears are fixed and meshed with each other, and a spring for urging a pair of bar type heaters in a closing direction by rotating a rotating shaft is engaged with these gears directly or indirectly so that the urging force can be adjusted. ing. Here, a gap corresponding to the thickness is formed between the pair of bar-type heaters at the reference position so that the overlap portion of the strip-shaped synthetic resin film can pass through, and the size of this gap adjusts the biasing force of the spring. It is adjustable by that.

【0003】そして、帯状の合成樹脂フィルムは各種ガ
イドロール製袋器を経てその長手方向両側縁が重合され
て筒状を呈して走行され、その重合部が一対のバー式ヒ
ーター間の隙間に入り込んで間接加熱されることにより
連続的に熱溶着されるようになっている。
Then, the strip-shaped synthetic resin film is passed through various guide roll bag-making machines and is run in a tubular shape with its both side edges in the longitudinal direction superposed, and the superposed section enters the gap between the pair of bar-type heaters. It is designed to be continuously heat-welded by being indirectly heated by.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来のセンターシーラ装置では、筒状を呈して走行する合
成樹脂フィルムの重合部を一対のバー式ヒータ間の隙間
に挿通させて当該重合部を間接加熱して溶着させるの
で、ヒータの加熱温度は高めに設定しなければならない
という問題があり、特にアルミ蒸着フィルムの場合には
設定温度が高くなりすぎてシール面が白濁するという惧
れがあった。
However, in the above-mentioned conventional center sealer device, the overlapped portion of the synthetic resin film traveling in a tubular shape is inserted into the gap between the pair of bar type heaters to indirectly connect the overlapped portion. There is a problem that the heating temperature of the heater must be set higher because it is heated and welded, and especially in the case of aluminum vapor-deposited film, the set temperature becomes too high and the sealing surface may become cloudy. .

【0005】また、合成樹脂フィルムの重合部は当該部
位の開き具合等により蛇行して左右に変位しながら走行
するので、一対のバー式ヒータ間の隙間に入り込む際に
当該左右一対のバー式ヒータに対して接触し、しかも重
合部とバー式ヒータとの接触状態は絶えず変動するか
ら、接触圧力や走行抵抗に乱れが生じる。このため、こ
れに起因して重合部に皺が発生し易いという問題もあっ
た。
Further, since the superposed portion of the synthetic resin film meanders depending on the degree of opening of the portion and travels while displacing to the left and right, the pair of left and right bar type heaters are inserted into the gap between the pair of bar type heaters. In addition, the contact state between the overlapping portion and the bar-type heater constantly changes, so that the contact pressure and the running resistance are disturbed. For this reason, there is a problem that wrinkles are likely to occur in the polymerized portion due to this.

【0006】この発明は、上記した問題点に鑑みてなさ
れたもので、その目的とするところは、帯状フィルムの
重合部の左右への変位に追従しながらこれに軽圧接しつ
つ直接加熱して当該重合部を熱溶着させることができ、
しかも走行抵抗の変動を可及的に防止できるセンターシ
ーラ装置を提供することにある。
The present invention has been made in view of the above problems, and an object thereof is to follow the displacement of the overlapping portion of the strip-shaped film to the left and right while directly heating it while lightly contacting it. The polymerized portion can be heat-welded,
Moreover, it is to provide a center sealer device capable of preventing fluctuations in running resistance as much as possible.

【0007】[0007]

【課題を解決するための手段】上記の目的を達成するた
めに本発明は、長手方向の両側縁が重合されて筒状をな
して走行される帯状合成樹脂フィルムの該重合部を、発
熱体を内蔵して対面配置された一対のバー式ヒータで挟
んで連続的に熱溶着させるセンターシーラ装置におい
て、前記バー式ヒータの少なくとも一方を、揺動自在な
支持アームの端部に固定し、該支持アームに該支持アー
ムの揺動軸廻りのモーメントを調整可能なバランスウェ
イトを取り付けたことを特徴とする。
In order to achieve the above-mentioned object, the present invention provides a heating element for the polymerized portion of a belt-shaped synthetic resin film which is run in a tubular shape by laminating both side edges in the longitudinal direction. In a center sealer device that sandwiches a pair of bar-type heaters arranged facing each other and heat-bonds them continuously, at least one of the bar-type heaters is fixed to an end of a swingable support arm, The support arm is equipped with a balance weight capable of adjusting a moment around the swing axis of the support arm.

【0008】[0008]

【作用】上記構成による本発明のセンターシーラ装置で
は、フィルムの重合部は両側方から一対のバー式ヒータ
で挟まれて熱溶着される。揺動自在な支持アームの端部
に固定された少なくとも一方のバー式ヒータは、フィル
ム重合部の側方の厚み方向に揺動移動可能で、バランス
ウェイトの調節により数グラムの軽い力で重合部の一側
面に接触され、重合部は軽圧力で両側のバー式ヒータに
挟まれる。
In the center sealer device of the present invention having the above structure, the overlapping portion of the film is sandwiched by a pair of bar type heaters from both sides and heat welded. At least one bar-type heater fixed to the end of the swingable support arm can swing and move in the thickness direction to the side of the film stacking unit, and the balance unit can be adjusted with a light force of several grams to create a stacking unit. One side is contacted, and the overlapping part is sandwiched by the bar type heaters on both sides with a light pressure.

【0009】フィルムの走行に伴い重合部の開き具合等
により当該部位が左右に変位すると、支持アームに固定
されたバー式ヒータがその左右への変位に追従して揺動
する。この際、追従側のバー式ヒータは数グラムの軽い
力で重合部の一側面に接触されているから、容易にその
変位に追従し得、接触状態を維持しつつ円滑に左右に揺
動して重合部を直接加熱し続ける。このため、ヒータの
設定温度を従来より低く設定しても充分に重合部の熱溶
着が可能であり、特にアルミ蒸着フィルムの場合にシー
ル面の白濁の発生を可及的に防止し得る。
When the portion is displaced to the left or right due to the degree of opening of the overlapping portion as the film runs, the bar-type heater fixed to the support arm swings following the displacement to the left and right. At this time, since the bar-type heater on the following side is in contact with one side surface of the overlapping portion with a light force of several grams, it can easily follow the displacement, and smoothly swings left and right while maintaining the contact state. And continue to heat the polymerization section directly. Therefore, even if the set temperature of the heater is set lower than in the conventional case, the polymerized portion can be sufficiently heat-welded, and in particular, in the case of an aluminum vapor-deposited film, the occurrence of cloudiness on the seal surface can be prevented as much as possible.

【0010】また、バー式ヒータはバランスウェイトで
調節される回転モーメント力により重合部の一側面に接
触されているから、重合部の蛇行に追従して左右に変位
してもその接触圧力が大きく変動することはなく、この
ため両バー式ヒータ間にフィルム重合部が入り込んでい
く際の抵抗が可及的に一定に維持され、もって溶着後の
重合部に皺等が発生し難い。
Further, since the bar type heater is brought into contact with one side surface of the overlapping portion by the rotational moment force adjusted by the balance weight, the contact pressure is large even when the bar heater is displaced to the left and right following the meandering of the overlapping portion. It does not fluctuate, and therefore, the resistance when the film overlapping portion enters between the two bar type heaters is maintained as constant as possible, and thus wrinkles are less likely to occur in the overlapping portion after welding.

【0011】[0011]

【実施例】以下に、本発明の好適な一実施例を添附図面
を参照にして詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

【0012】図1は本発明に係わるセンターシーラ装置
の側面図であり、図2は図1中のII−II線部の矢視断面
図で、同図(A)はフィルムの重合部を熱溶着している
状態を示し、同図(B)はフィルムのセット前の状態を
示す。また、図3は図1中のIII −III 線部の矢視断面
図、図4は図1中のIV−IV線部の矢視断面図である。
FIG. 1 is a side view of a center sealer device according to the present invention, FIG. 2 is a sectional view taken along the line II--II in FIG. 1, and FIG. The state in which the films are welded is shown, and FIG. 3B shows the state before the film is set. 3 is a sectional view taken along the line III-III in FIG. 1, and FIG. 4 is a sectional view taken along the line IV-IV in FIG.

【0013】図1,図2において、2は帯状の合成樹脂
製フィルムであり、このフィルム2は図示していない各
種ガイドロール製袋器を経て、その長手方向両側縁が重
合されて筒状に形成された状態で搬送路上を走行されて
くる。センターシーラ装置4はそのフィルムの重合部6
を両側から加熱溶着するもので、当該重合部6は搬送路
8の上方に設けられた遮熱板10のスリット12から上
方に突出されて走行され、センターシーラ装置4の前後
には重合部6を挟んで案内するガイドローラ機構7,7
が配置されている。
In FIGS. 1 and 2, reference numeral 2 is a strip-shaped synthetic resin film, and the film 2 is passed through various guide roll bag-making devices (not shown), and its longitudinal edges are polymerized to form a tubular shape. It travels on the transport path in the formed state. The center sealer device 4 has the overlapping portion 6 of the film.
Is heat-welded from both sides, and the overlapping portion 6 is projected upward from the slit 12 of the heat shield plate 10 provided above the conveying path 8 and travels, and the overlapping portion 6 is provided before and after the center sealer device 4. Guide roller mechanism 7 and 7 for sandwiching and guiding
Is arranged.

【0014】センターシーラ装置4は図外の機枠に固定
されたフレーム14とこのフレームに揺動自在に支持さ
れて垂下された一対の支持アーム16,17とを有し、
これら一対の支持アーム16,17の各下端部には、発
熱体を内蔵した一対のバー式ヒータ18が対面状態で固
定されている。
The center sealer device 4 has a frame 14 fixed to a machine frame (not shown) and a pair of support arms 16 and 17 which are swingably supported by the frame and hang down.
A pair of bar-type heaters 18 containing a heating element are fixed to the lower end portions of the pair of support arms 16 and 17 so as to face each other.

【0015】上記フレーム14はフィルム2走行方向に
対して直角に配置されて機枠に固定される主板20と、
この主板20に対してフィルム走行方向の後方に所定の
間隔を開けて平行に配置される副板22と、これら主板
20と副板22とを相互に一体的に連結する連結板24
とから主になる。連結板24は遮熱板10のスリット1
2の直上に、このスリット12に沿って設けられ、主板
20と副板22とをそれらの下端部で連結している。
The frame 14 is a main plate 20 arranged at right angles to the running direction of the film 2 and fixed to the machine frame,
A sub plate 22 arranged in parallel to the main plate 20 at a predetermined distance behind the main plate 20 and a connecting plate 24 for integrally connecting the main plate 20 and the sub plate 22 to each other.
And become the Lord. The connecting plate 24 is the slit 1 of the heat shield plate 10.
It is provided immediately above 2 along this slit 12 and connects the main plate 20 and the sub plate 22 at their lower ends.

【0016】一対の支持アーム16,17は連結板24
の上方で、主板20と副板22とに設けられたピボット
軸25に係合されて揺動自在に垂下支持されている(図
3参照)。各支持アーム16,17の下端部に固定され
るバー式ヒータ18はスリット12から突出するフィル
ム2の重合部6の側方に位置し、当該スリット12に沿
って前後に延びている。
The pair of support arms 16 and 17 is a connecting plate 24.
Above, is engaged with a pivot shaft 25 provided on the main plate 20 and the sub-plate 22 and swingably supported so as to be swingable (see FIG. 3). The bar-type heater 18 fixed to the lower ends of the support arms 16 and 17 is located on the side of the overlapping portion 6 of the film 2 protruding from the slit 12 and extends back and forth along the slit 12.

【0017】ここで、図2(A),(B)において右側
に示される一方の支持アーム16は基準側になってい
る。即ち、この基準側支持アーム16にはこれを図示す
る時計回転方向に回動付勢させる付勢手段26と、その
回動を規制して基準位置に位置決めするストッパ28と
が設けられている。図4に示すように付勢手段26は、
主板20に取り付けられて支持アーム16の側方に屈曲
されたL字状の係止金具30と、支持アーム16の外側
面に立設されて係止金具30の長孔32に挿通されたロ
ッド部材34と、このロッド部材34の外側に嵌装され
て両端が支持アーム16及び係止金具30にそれぞれ当
接するコイルスプリング36とからなっている。また、
ストッパ28は連結板24に螺合されてこれを貫通する
ねじ部材28aでなり、先端部に支持アーム16aが当
接して当該支持アーム16を基準位置に係止するように
なっており、この基準位置はねじ部材28aの捩じ込み
量により任意に調節し得るようになっている。
Here, the one support arm 16 shown on the right side in FIGS. 2A and 2B is on the reference side. That is, the reference side support arm 16 is provided with an urging means 26 for urging the reference side support arm 16 to rotate in the clockwise direction shown in the figure, and a stopper 28 for restricting the rotation to position the reference side support arm at the reference position. As shown in FIG. 4, the biasing means 26 is
An L-shaped locking metal fitting 30 attached to the main plate 20 and bent to the side of the support arm 16, and a rod that is erected on the outer surface of the support arm 16 and is inserted into the long hole 32 of the locking metal fitting 30. It comprises a member 34 and a coil spring 36 fitted on the outside of the rod member 34 and having both ends abutting the support arm 16 and the locking fitting 30, respectively. Also,
The stopper 28 is a screw member 28a that is screwed into the connecting plate 24 and penetrates the connecting plate 24, and the supporting arm 16a abuts on the tip end thereof to lock the supporting arm 16 at the reference position. The position can be arbitrarily adjusted by the screwing amount of the screw member 28a.

【0018】これに対し、図2(A),(B)において
左側に示される他方の支持アーム17はフィルム2の重
合部6の蛇行(厚み方向の変位)に追従して揺動する追
従側になっていて、この追従側支持アーム17にはその
揺動範囲を規制する2つのストッパ38,40が設けら
れている。即ち一方の第1ストッパ38は支持アーム1
7を貫通して螺合されたねじ部材38aでなり、先端が
連結板24に当接する。他方の第2ストッパ40は一端
が副板22にねじ止めされて他端が支持アーム17の側
方に向けてL字状に屈曲された金具40aでなり、支持
アーム17側に突出してこれに当接する突起40bを有
している。
On the other hand, the other support arm 17 shown on the left side in FIGS. 2 (A) and 2 (B) swings following the meandering (displacement in the thickness direction) of the overlapping portion 6 of the film 2. The follower side support arm 17 is provided with two stoppers 38 and 40 for restricting its swing range. That is, one of the first stoppers 38 is the support arm 1
7 is a screw member 38a screwed through and screwed, and the tip of the screw member 38a contacts the connecting plate 24. The other second stopper 40 is a metal fitting 40a having one end screwed to the sub plate 22 and the other end bent to the side of the support arm 17 in an L-shape, and projects toward the support arm 17 side. It has a projection 40b that abuts.

【0019】また、両支持アーム16,17にはピボッ
ト軸25によって支持された揺動軸部16a,17aか
ら上方に突出してL字状に屈曲された係合アーム16
b,17bが一体形成されている。これらの係合アーム
16b,17bは前後方向にオフセットされて設けられ
ていて、その各屈曲端は相互に前後に重なるようにして
側方に延びている。
Further, the support arms 16 and 17 have an engaging arm 16 which is bent in an L shape so as to project upward from the swing shaft portions 16a and 17a supported by the pivot shaft 25.
b and 17b are integrally formed. These engagement arms 16b and 17b are provided offset in the front-rear direction, and the respective bent ends thereof extend laterally so as to overlap each other in the front-rear direction.

【0020】ここで、上記係合アーム16b,17bは
支持アーム16,17を強制的に開放作動させるための
もので、その上方には各屈曲端を押し下げて開放作動さ
せるアクチュエータとしてのソレノイド42が設けられ
ている。このソレノイド42は支持ステー44を介して
フレーム14の主板20に取り付けられていて、通電さ
れると可動鉄芯42aが下方に突出して上記各屈曲端を
押し下げ、支持アーム16,17を強制開放させるよう
になっている。
Here, the engaging arms 16b and 17b are for forcibly opening the supporting arms 16 and 17, and a solenoid 42 as an actuator for pushing down each bent end to perform the opening operation is provided above the engaging arms 16b and 17b. It is provided. The solenoid 42 is attached to the main plate 20 of the frame 14 via a support stay 44, and when energized, the movable iron core 42a projects downward and pushes down the bent ends to forcibly open the support arms 16 and 17. It is like this.

【0021】ところで、追従側支持アーム17にはこれ
の揺動軸廻りのモーメントを調整するバランスウェイト
が設けられている。図2に示すように本実施例では、2
つのバランスウェイト46,48が設けられており、一
方の第1バランスウェイト46は同図における時計回り
方向の回転モーメントを調節するためのもので、係合ア
ーム17bの屈曲端に取り付けられて側方に延びる支持
ロッド46aに摺動移動自在に嵌装されている。また、
他方の第2バランスウェイト48は反時計回り方向の回
転モーメントを調節するためのもので、支持アーム17
の揺動軸部17bに植設されて側方に延びる支持ロッド
48aに摺動移動自在に嵌装されている。
By the way, the follower side support arm 17 is provided with a balance weight for adjusting the moment about the swing axis thereof. In this embodiment, as shown in FIG.
Two balance weights 46, 48 are provided. One first balance weight 46 is for adjusting the rotational moment in the clockwise direction in the figure, and is attached to the bending end of the engaging arm 17b to the side. Is slidably mounted on a support rod 46a extending to. Also,
The other second balance weight 48 is for adjusting the rotational moment in the counterclockwise direction, and supports the support arm 17
Is slidably mounted on a support rod 48a which is planted on the swing shaft portion 17b and extends laterally.

【0022】ここで、上記第1バランスウェイト46は
主に支持アーム17及びバー式ヒータ18等の重量に起
因するこれらの揺動軸廻りの回転モーメントを均衡させ
るもので、第2バランスウェイト48は主にバー式ヒー
タ18のフィルム重合部6への接触圧力を調節するため
のものである。即ち、第2バランスウェイト48を基準
位置にセットした状態で、第1バランスウェイト46に
より全体の回転モーメントを均衡させ、この状態から第
2バランスウェイト48で追従側支持アーム17の下端
に固定されたバー式ヒータ18を数グラムの軽い力で重
合部6の一側面に接触させるように調節する。
Here, the first balance weight 46 balances the rotational moments of the support arm 17, the bar type heater 18, etc. around the swing axis mainly due to the weight of the support arm 17, the second balance weight 48 and the like. It is mainly for adjusting the contact pressure of the bar-type heater 18 to the film overlapping portion 6. That is, with the second balance weight 48 set to the reference position, the first balance weight 46 balances the entire rotational moment, and from this state, the second balance weight 48 is fixed to the lower end of the follower support arm 17. The bar-type heater 18 is adjusted so as to come into contact with one side surface of the overlapping portion 6 with a light force of several grams.

【0023】以上のように構成されるセンターシーラ装
置4では、図2(A)に示すようにフィルム2の重合部
6は両側方から一対のバー式ヒータ18,18で挟まれ
て熱溶着される。この際、基準側支持アーム16に固定
されたバー式ヒータ18は付勢手段26とストッパ28
とにより基準位置に位置決めされて係止されている。
In the center sealer device 4 constructed as above, as shown in FIG. 2 (A), the overlapping portion 6 of the film 2 is sandwiched by a pair of bar type heaters 18 and heat-welded from both sides. It At this time, the bar-type heater 18 fixed to the reference side support arm 16 includes the urging means 26 and the stopper 28.
Is positioned and locked at the reference position by and.

【0024】また、揺動自在な追従側の支持アーム17
の下端に固定されたバー式ヒータ18は、フィルム重合
部6の側方の厚み方向に揺動移動可能で、バランスウェ
イト48の調節により数グラムの軽い力で重合部6の一
側面に接触され、重合部6は軽圧力で両側のバー式ヒー
タ18,18に挟まれている。
Further, the support arm 17 on the follower side which can swing freely
The bar type heater 18 fixed to the lower end of the film is swingable in the lateral thickness direction of the film overlapping portion 6, and is adjusted by adjusting the balance weight 48 so that it is brought into contact with one side surface of the overlapping portion 6 with a light force of several grams. The overlapping portion 6 is sandwiched between the bar-type heaters 18, 18 on both sides with a light pressure.

【0025】フィルム2の走行に伴い重合部6の開き具
合等により当該部位が左右に蛇行すると、支持アーム1
7に固定されたバー式ヒータ18がその左右への変位に
追従して揺動する。この際、当該追従側のバー式ヒータ
18は数グラムの軽い力で重合部の一側面に接触されて
いるから、容易にその変位に追従し得、接触状態を維持
しつつ円滑に左右に揺動して重合部6を直接加熱し続け
る。このため、バー式ヒータ18,18の設定温度を従
来より低く設定しても充分に重合部6の熱溶着が可能で
あり、特にアルミ蒸着フィルムを使用してもシール面に
白濁が発生することを可及的に防止し得る。
As the film 2 travels, the supporting arm 1 moves when the portion meanders to the left and right due to the opening degree of the overlapping portion 6 and the like.
The bar-type heater 18 fixed to 7 swings following the displacement to the left and right. At this time, since the bar-type heater 18 on the tracking side is in contact with one side surface of the overlapping portion with a light force of several grams, the displacement can be easily tracked, and the bar-shaped heater 18 can be smoothly swung left and right while maintaining the contact state. The superposition | polymerization part 6 is moved and it continues heating directly. For this reason, even if the set temperature of the bar type heaters 18 and 18 is set lower than the conventional temperature, the polymerized portion 6 can be sufficiently heat-welded, and even if an aluminum vapor-deposited film is used, cloudiness may occur on the sealing surface. Can be prevented as much as possible.

【0026】また、追従側のバー式ヒータ18はバラン
スウェイト46,48で調節される回転モーメント力に
より重合部6の一側面に軽い力で接触されているから、
重合部6の蛇行に追従して左右に変位してもその接触圧
力が大きく変動することはなく、このため両バー式ヒー
タ18,18間にフィルム重合部6が入り込んでいく際
の抵抗が可及的に一定に維持され、もって溶着後の重合
部6に皺等を発生させ難く、この皺の発生を可及的に防
止し得る。
Further, since the bar-type heater 18 on the following side is brought into contact with one side surface of the overlapping portion 6 with a light force by the rotational moment force adjusted by the balance weights 46 and 48,
The contact pressure does not fluctuate greatly even if it is displaced to the left and right following the meandering of the overlapping portion 6, so that resistance when the film overlapping portion 6 enters between the two bar-type heaters 18, 18 is possible. It is maintained constant as much as possible, and thus it is difficult to cause wrinkles or the like in the polymerized portion 6 after welding, and the wrinkles can be prevented as much as possible.

【0027】なお、本実施例では基準側支持アーム16
に固定されたバー式ヒータ18はフィルム重合部6の蛇
行(変位)に追従させずに基準位置に係止させている
が、フィルムが硬めのものの場合には、双方のバー式ヒ
ータをフィルム重合部の蛇行に追従させるように構成す
ると良い。フィルムが軟質で硬くなければ、本実施例の
ように一方のバー式ヒータのみを重合部の変位に追従さ
せて揺動させるだけで充分に走行抵抗の変動を抑えつ
つ、直接加熱で当該重合部を熱溶着させ得る。
In this embodiment, the reference side support arm 16
The bar-type heater 18 fixed to is locked at the reference position without following the meandering (displacement) of the film stacking portion 6, but when the film is hard, both bar-type heaters are film-stacked. It may be configured to follow the meandering of the part. If the film is not soft and hard, as in this embodiment, only one bar type heater is oscillated by following the displacement of the polymerized portion to sufficiently suppress the fluctuation of the running resistance and directly heat the polymerized portion. Can be heat welded.

【0028】また、上述した実施例はフィルム重合部が
上側になる逆型センターシーラ装置を例示しているが、
これとは上下が逆構成になる正型センターシーラ装置に
対しても本発明を適用し得ることは勿論である。
Further, the above-mentioned embodiment exemplifies the reverse center sealer device in which the film superposition part is on the upper side.
Needless to say, the present invention can be applied to a normal center sealer device having an upside down configuration.

【0029】[0029]

【発明の効果】以上、実施例で詳細に説明したように本
発明によれば次の様な優れた効果を発揮する。
As described above in detail in the embodiments, the present invention exhibits the following excellent effects.

【0030】(1)揺動自在な支持アームの下端に固定
された少なくとも一方のバー式ヒータは、フィルム重合
部の厚み方向に揺動移動可能で、バランスウェイトの調
節により数グラムの軽い力で当該重合部の一側面に接触
され、当該重合部は軽圧力で両側のバー式ヒータに挟ま
れているから、フィルムの重合部の開き具合等により当
該フィルムの走行により重合部位が左右に変位して蛇行
しても、一方のバー式ヒータは容易にその変位に追従し
て接触状態を維持しつつ円滑に左右に揺動し、集合部を
直接加熱し続ける。このため、ヒータの設定温度を従来
より低く設定しても充分に重合部の熱溶着が可能であ
り、特にアルミ蒸着フィルムの場合にシール面の白濁の
発生を可及的に防止し得る。
(1) At least one bar-type heater fixed to the lower end of the swingable support arm can swing and move in the thickness direction of the film stacking portion, and a balance weight can be adjusted with a light force of several grams. The overlapped portion is in contact with one side of the overlapped portion, and the overlapped portion is sandwiched between the bar-type heaters on both sides with a light pressure. Even if it meanders, one bar-type heater easily follows the displacement and smoothly swings to the left and right while maintaining the contact state, and continues to directly heat the collecting portion. Therefore, even if the set temperature of the heater is set lower than in the conventional case, the polymerized portion can be sufficiently heat-welded, and in particular, in the case of an aluminum vapor-deposited film, the occurrence of cloudiness on the seal surface can be prevented as much as possible.

【0031】(2)また、一方のバー式ヒータはバラン
スウェイトで調節される回転モーメント力により重合部
の一側面に接触されているから、重合部の蛇行に追従し
て左右に変位してもその接触圧力が大きく変動すること
はなく、このため両バー式ヒータ間にフィルム重合部が
入り込んでいく際の抵抗が可及的に一定に維持され、も
って溶着後の重合部に皺等を発生させることを可及的に
防止し得る。
(2) Further, since one of the bar type heaters is in contact with one side surface of the overlapping portion by the rotational moment force adjusted by the balance weight, even if it is displaced to the left or right following the meandering of the overlapping portion. The contact pressure does not fluctuate significantly, so that the resistance when the film superposition part enters between both bar type heaters is kept as constant as possible, so that wrinkles etc. occur in the superposition part after welding. This can be prevented as much as possible.

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

【図1】本発明に係わるセンターシーラ装置の側面図で
ある。
FIG. 1 is a side view of a center sealer device according to the present invention.

【図2】図1中のII−II線部の矢視断面図であり、同図
(A)はフィルムの重合部を熱溶着している状態を示
し、同図(B)はフィルムのセット前の状態を示す。
2 is a cross-sectional view taken along the line II-II in FIG. 1, in which FIG. 2A shows a state in which the polymerized portion of the film is heat-welded, and FIG. Shows the previous state.

【図3】図1中のIII −III 線部の矢視断面図である。FIG. 3 is a sectional view taken along the line III-III in FIG.

【図4】図1中のIV−IV線部の矢視断面図である。FIG. 4 is a sectional view taken along the line IV-IV in FIG.

【符号の説明】[Explanation of symbols]

2 合成樹脂製フィルム 4 センターシーラ装置 6 重合部 17 支持アーム 18 バー式ヒータ 25 ピボット軸() 46 第1バランスウェイト 48 第2バランスウェイト 2 Synthetic resin film 4 Center sealer device 6 Overlapping part 17 Support arm 18 Bar type heater 25 Pivot shaft () 46 1st balance weight 48 2nd balance weight

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 長手方向の両側縁が重合されて筒状をな
して走行される帯状合成樹脂フィルムの該重合部を、発
熱体を内蔵して対面配置された一対のバー式ヒータで挟
んで連続的に熱溶着させるセンターシーラ装置におい
て、 前記バー式ヒータの少なくとも一方を、揺動自在な支持
アームの端部に固定し、該支持アームに該支持アームの
揺動軸廻りのモーメントを調整可能なバランスウェイト
を取り付けたことを特徴とするセンターシーラ装置。
1. A strip-shaped synthetic resin film, which is run in a tubular shape by laminating both side edges in the longitudinal direction, is sandwiched by a pair of bar-type heaters having a heating element built in and facing each other. In a center sealer device for continuous heat welding, at least one of the bar-type heaters is fixed to the end of a swingable support arm, and the moment about the swing axis of the support arm can be adjusted on the support arm. Center sealer device with various balance weights attached.
JP25185194A 1994-10-18 1994-10-18 Center sealer Pending JPH08119208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25185194A JPH08119208A (en) 1994-10-18 1994-10-18 Center sealer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25185194A JPH08119208A (en) 1994-10-18 1994-10-18 Center sealer

Publications (1)

Publication Number Publication Date
JPH08119208A true JPH08119208A (en) 1996-05-14

Family

ID=17228871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25185194A Pending JPH08119208A (en) 1994-10-18 1994-10-18 Center sealer

Country Status (1)

Country Link
JP (1) JPH08119208A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10101012A (en) * 1996-10-01 1998-04-21 Shikoku Kakoki Co Ltd Tube molding apparatus and machine for manufacturing packaging container
CN102490937A (en) * 2011-11-22 2012-06-13 吴江市博众精工科技有限公司 Membrane slicing module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10101012A (en) * 1996-10-01 1998-04-21 Shikoku Kakoki Co Ltd Tube molding apparatus and machine for manufacturing packaging container
CN102490937A (en) * 2011-11-22 2012-06-13 吴江市博众精工科技有限公司 Membrane slicing module

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