JPH03180320A - Lay-flat film extruding device - Google Patents

Lay-flat film extruding device

Info

Publication number
JPH03180320A
JPH03180320A JP1319156A JP31915689A JPH03180320A JP H03180320 A JPH03180320 A JP H03180320A JP 1319156 A JP1319156 A JP 1319156A JP 31915689 A JP31915689 A JP 31915689A JP H03180320 A JPH03180320 A JP H03180320A
Authority
JP
Japan
Prior art keywords
raw material
take
speed
output
thickness
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
JP1319156A
Other languages
Japanese (ja)
Other versions
JPH0737067B2 (en
Inventor
Masashi Kuriwaki
栗脇　真史
Mitsuo Hatayama
畑山　光夫
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP1319156A priority Critical patent/JPH0737067B2/en
Publication of JPH03180320A publication Critical patent/JPH03180320A/en
Publication of JPH0737067B2 publication Critical patent/JPH0737067B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92133—Width or height
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92438—Conveying, transporting or storage of articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92923—Calibration, after-treatment or cooling zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE:To make it possible to re-use the trimmed edge of film without using thickness detecting device by a method where the calculations of the weight of raw material including the trimmed edge and of the weight of formed item per unit thickness are performed on the basis of the value, which represents the quantity of the trimmed edge to be re-used as raw material, and the value of the raw material. CONSTITUTION:A calculating section of the quantity of trimmed edge 12 calculates a formula Y=K1XLnowX(W-w)XDXrho, in which W is the width of formed item detected with a film width sensor 16, (w) is the width of trimmed item, Lnow is the take-off speed of the item, D is the aimed thickness of the item, (rho) is the density of raw material and K1 is a constant and outputs the calculated value Y as the value representing the quantity of trimmed edge to be re-used. A calculating section of the take-off speed 13 calculates Lnew= K2(X+Y)/WXDXrho), in which X represents the usage of raw material calculated at a calculating section of the supply of raw material 11 and K2 is a constant and outputs the calculated value Lnew as the new take-off speed.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、成形物から切り取られた耳を原料として再使
用するインフレーション成形装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an inflation molding apparatus that reuses edges cut from a molded product as a raw material.

（従来の技術） 原料を溶融した後、金型を用いて円筒状の薄膜に成形し
、薄膜となった成形物の両側部を切り落とすことによっ
てフィルムの製造を行うインフレーション成形装置にお
いては、フィルムの厚みが一定となるように引取速度の
制御を行う必要がある。(Prior art) In an inflation molding device, a film is manufactured by melting a raw material, molding it into a cylindrical thin film using a mold, and cutting off both sides of the formed thin film. It is necessary to control the take-up speed so that the thickness remains constant.

そのため、従来においては、フィルム厚みを検出する検
出装置を設け、その出力に基いて薄膜の引取速度の制御
を行う装置が一般に使用されてきたが、フィルムの厚み
を検出する装置が高価であることから、原料の供給量や
成形物又は製品幅等のデータに基く演算を行い、演算結
果に従った速度で成形物の引き取りを行うことにより、
厚み検出装置が不要となるフィルム厚みの制御装置が提
案されていた。For this reason, in the past, a device that was equipped with a detection device to detect the film thickness and controlled the thin film take-up speed based on the output was generally used, but the device to detect the film thickness was expensive. From there, calculations are performed based on data such as the amount of raw materials supplied and the width of the molded product or product, and the molded product is picked up at a speed according to the calculation results.
A film thickness control device has been proposed that eliminates the need for a thickness detection device.

（発明が解決しようとする課題〉 フィルムは、成形物からその両側部を切り落とすことに
より得られるのであるが、上記の演算により引取速度を
制御する装置は、切り落とされた成形物である耳を廃棄
物として処理する装置となっており、原料の使用効率が
悪いという問題があった。(Problem to be Solved by the Invention) Film is obtained by cutting off both sides of a molded product, but the device that controls the take-up speed using the above calculation does not discard the cut-off edges of the molded product. This is a device that processes raw materials, and there is a problem in that the efficiency of raw material usage is poor.

一方、上記の耳を細かく切断して原料への混合を行うこ
とにより、耳の再使用を行っている装置では、厚み検出
装置を用いた厚み制御を行っているため、装置が高価に
なるという問題が生じていた。On the other hand, the equipment that reuses the selvedges by cutting them into small pieces and mixing them into the raw material uses a thickness detection device to control the thickness, which makes the equipment expensive. A problem had arisen.

本発明は上記課題を解決するため創案されたものであり
、その目的は、厚み検出装置を使用することなく、耳を
再使用することのできるインフレーション成形装置を提
供することにある。The present invention was devised to solve the above problems, and its purpose is to provide an inflation molding device that can reuse the selvage without using a thickness detection device.

（課題を解決するための手段） 上記課題を解決するため本発明のインフレーション成形
装置は、成形物から切り取られた耳を原料として再使用
するインフレーション成形装置に適用し、耳以外の原料
の減少速度に基いて、耳以外の原料の供給量を算出する
原料供給量演算部と、成形物の幅を検出するフィルム幅
センサと、このフィルム幅センサの出力と成形物の引取
速度と目標製品厚みと製品幅と原料の密度とから、原料
として再使用される耳の供給量を算出する耳型演算部と
、この耳型演算部の出力と原料供給量演算部の出力とフ
ィルム幅センサの出力と目標製品厚みと原料の密度とに
基き、新たな引取速度の演算を行う引取速度演算部とを
備えた構成を採用する。(Means for Solving the Problems) In order to solve the above-mentioned problems, the inflation molding device of the present invention is applied to an inflation molding device that reuses the ears cut from the molded product as raw materials, and reduces the rate of decrease of raw materials other than the ears. , a raw material supply amount calculation unit that calculates the supply amount of raw materials other than selvedges, a film width sensor that detects the width of the molded product, and the output of this film width sensor, the take-up speed of the molded product, and the target product thickness. An ear shape calculation unit calculates the supply amount of ears to be reused as raw material from the product width and raw material density, and the output of this ear shape calculation unit, the output of the raw material supply amount calculation unit, and the output of the film width sensor. A configuration is adopted that includes a take-up speed calculation unit that calculates a new take-up speed based on the target product thickness and the density of the raw material.

（作用〉 フィルム幅センサによって検出される成形物の幅をＷ、
耳が切り落とされた製品の幅をＷ、引取速度をＬｎｏｗ
、目標製品厚みをＤ１原料の密度をρ、Ｋ１を定数とす
ると、耳型演算部はＹ＝に、ＸＬｎｏｗ　Ｘ　（Ｗ−ｗ
）ＸＤＸρ　−（１）なる演算を行い、その演算値Ｙを
、再使用される耳の量を示す値として出力する。(Function) The width of the molded product detected by the film width sensor is W,
The width of the product with the ears cut off is W, and the pick-up speed is Lnow.
, the target product thickness is D1, the density of the raw material is ρ, and K1 is a constant, then the ear-shaped calculation section calculates Y=, XLnow X (W-w
) XDXρ - (1) is performed, and the calculated value Y is output as a value indicating the amount of ears to be reused.

そして原料供給量演算部により算出され、原料の使用量
を示す値をＸ、に！を定数とすると、引取速度演算部は
、上記Ｔｌ１式から Ｌｎｅｗ　＝に、（Ｘ＋Ｙ）／　（ＷＸＤＸρ）なる演
算を行い、その演算値Ｌｎｅ−を新たな引取速度として
出力する。Then, the value calculated by the raw material supply amount calculation unit and indicating the amount of raw material used is set to X! Assuming that is a constant, the take-up speed calculation unit performs the calculation (X+Y)/(WXDXρ) on Lnew = from the above Tl1 equation, and outputs the calculated value Lne- as a new take-up speed.

（実施例） 第２図は、本発明の一実施例の成形装置本体を示す概略
図である。(Example) FIG. 2 is a schematic diagram showing a molding apparatus main body according to an example of the present invention.

図において、原料タンク２１内に収納された原料は、原
料タンク２１の下部に一方の端部が接続された案内パイ
プ２２を介して電磁パルプ２０に導かれ、！磁バルブ２
０が開いているときには、ホッパ２３の上部に開口した
端部２２１よりホッパ２３に向かって落下する。In the figure, the raw material stored in the raw material tank 21 is guided to the electromagnetic pulp 20 via a guide pipe 22 whose one end is connected to the lower part of the raw material tank 21. magnetic valve 2
0 is open, it falls toward the hopper 23 from the end 221 opened at the top of the hopper 23.

このホッパ２３の側壁の上下方向の異なる２箇所には、
ホッパ２３内に落下した原料の上面位置の検出を行うセ
ンサとして、上限センサ１１１と下限センサ１１２とが
取り付けられており、ホッパ２３の底部には、ホッパ２
３の総重量の検出を行う型置センサ１７が取り付けられ
ている。At two different locations in the vertical direction of the side wall of this hopper 23,
An upper limit sensor 111 and a lower limit sensor 112 are attached to the bottom of the hopper 23 as sensors for detecting the upper surface position of the raw material that has fallen into the hopper 23.
A mold position sensor 17 is attached to detect the total weight of 3.

このホッパ２３に落下した原料は、ホッパ２３の下部よ
り、押出スクリュ３６１がその内部に設けられた押出部
３６に向かって移動し、押出部３６において加熱されな
がら、ホッパ２３に対向する端部に取り付けられたダイ
ス３５に案内される。The raw material that has fallen into the hopper 23 moves from the lower part of the hopper 23 toward an extrusion section 36 in which an extrusion screw 361 is provided, and is heated in the extrusion section 36 while being heated at the end opposite to the hopper 23. It is guided to the attached die 35.

そしてこのダイス３５においてさらに加熱された後、ダ
イス３５の上部に設けられ、リング状の押出口が形成さ
れた金型３４に向かって押し出される。After being further heated in this die 35, it is extruded toward a mold 34 provided at the upper part of the die 35 and having a ring-shaped extrusion opening.

金型３４とダイス３５との接続部には、エアーポンプ１
９からのパイプが導かれ、エアーポンプ１９からの空気
は、リング状の押出口の中央部に吹き出しているため、
金型３４の上部において、円筒状の薄膜に成形される。An air pump 1 is installed at the connection between the mold 34 and the die 35.
Since the pipe from 9 is led and the air from the air pump 19 is blown out to the center of the ring-shaped extrusion port,
In the upper part of the mold 34, it is formed into a cylindrical thin film.

そして円筒状に成形された薄膜である成形物５２は、金
型３４の上方位置に取り付けられた一対の安定板３３に
沿って案内され、安定板３３の近傍の上部に設けられた
一対のローラである引取ローラ１８によって引き取られ
る。The molded product 52, which is a thin film formed into a cylindrical shape, is guided along a pair of stabilizing plates 33 attached above the mold 34, and a pair of rollers disposed at the upper part near the stabilizing plates 33 It is taken up by a take-up roller 18.

引取ローラ１８により引き取られた成形物は、引取ロー
ラ１８の上部に設けられた案内ローラ３０によって引取
方向が変換され、水平方向に移動する。The molded product taken off by the take-off roller 18 has its take-up direction changed by a guide roller 30 provided above the take-off roller 18, and moves in the horizontal direction.

この水平方向に移動する成形物５１の移動経路上には、
案内ローラ３０に近い側に、成形物５１の幅の検出を行
うフィルム幅センサ１６が取り付けられており、案内ロ
ーラ３０から離れた側には、成形物５１の両端部の切り
落としを行うカッタ１５が設けられている。On the moving path of the molded product 51 moving in the horizontal direction,
A film width sensor 16 for detecting the width of the molded product 51 is attached to the side close to the guide roller 30, and a cutter 15 for cutting off both ends of the molded product 51 is installed to the side away from the guide roller 30. It is provided.

そしてカッタ１５により切り落とされた両端部である耳
５３は、２つの案内ローラ２５，２６によって案内され
、耳回収装置２４の導入口２４１に導かれる。そしてこ
の耳回収装置２４において切断粉砕された耳は、ホッパ
２３と押出部３６との接続部分に向かって開口した排出
口より、原料に混合される。The ears 53, which are both ends cut off by the cutter 15, are guided by two guide rollers 25 and 26 and led to the introduction port 241 of the ear collecting device 24. The ears cut and crushed in the ear collection device 24 are mixed with the raw material through a discharge port opened toward the connecting portion between the hopper 23 and the extrusion section 36.

一方、耳が切り落とされた成形物である製品は、２重に
重なったフィルムとなっており、これらのフィルムは一
対の案内ローラ２７．２Ｂによって案内され、巻取ロー
ラ３１．３２において、それぞれが個別に巻き取られる
。On the other hand, the product, which is a molded product with edges cut off, is a double layered film, and these films are guided by a pair of guide rollers 27.2B, and each one is rolled by a winding roller 31.32. individually wound.

第１図は、本発明の一実施例の電気的構成を示すブロッ
ク線図である。FIG. 1 is a block diagram showing the electrical configuration of an embodiment of the present invention.

図において、ホッパ２３に取り付けられた３つのセンサ
１７．１１１．１１２の内、重量センサ１７の出力は主
制御部１４に、上限センサ１１．１と下限センサ１１２
の２つのセンサ１１１，１１２の出力は、主制御部１４
と供給量演算部１１とに導かれている。またカッタ１５
より送出される製品の幅を示す出力は耳目演算部１２に
導かれており、成形物５１の幅の検出を行うフィルム幅
センサ１６の出力は、耳目演算部１２と引取速度演算部
１３とに導かれている。In the figure, among the three sensors 17, 111, and 112 attached to the hopper 23, the output of the weight sensor 17 is sent to the main control unit 14 by the upper limit sensor 11.1 and the lower limit sensor 11.
The outputs of the two sensors 111 and 112 are transmitted to the main control unit 14.
and the supply amount calculating section 11. Also cutter 15
The output indicating the width of the product sent out is led to the width calculation unit 12, and the output of the film width sensor 16, which detects the width of the molded product 51, is sent to the width calculation unit 12 and the take-up speed calculation unit 13. being guided.

供給量演算部１１からの出力及び耳目演算部１２の出力
は引取速度演算部１３に与えられており、耳目演算部１
２には、主制御部１４から送出される引取速度を示す出
力１４ａが与えられている。The output from the supply amount calculation section 11 and the output from the eye and eye calculation section 12 are given to the take-up speed calculation section 13.
2 is provided with an output 14a sent from the main control section 14 that indicates the take-up speed.

そして耳貴演算部１２と引取速度演算部１３とには、主
制御部１４からの出力であり、目標製品厚みを示す出力
１４ｂと原料の密度を示す出力１４Ｃとが導かれている
。そして主制御部１４には、引取速度演算部１３からの
出力が、新たな引取速度を示す出力１３ａとして与えら
れている。An output 14b indicating the target product thickness and an output 14C indicating the density of the raw material, which are outputs from the main control section 14, are led to the thickness calculation section 12 and the take-up speed calculation section 13. The main control section 14 is provided with an output from the take-up speed calculation section 13 as an output 13a indicating a new take-up speed.

また引取ローラ１８、エアーポンプ１９及び電磁バルブ
２０には、主制御部１４からの出力が導入されている。Further, the output from the main control section 14 is introduced into the take-up roller 18, the air pump 19, and the electromagnetic valve 20.

以上の説明において、供給量演算部１１、耳目演算部１
２、引取速度演算部１３及び主制御部１４は、その主要
部がソフトウェアによる構成となっており、原料供給量
演算部は、上限センサ１１１と下限センサ１１２と供給
量演算部１１とにより構成されている。In the above explanation, the supply amount calculation unit 11, the ear and eye calculation unit 1
2. The main parts of the take-up speed calculation section 13 and the main control section 14 are configured by software, and the raw material supply amount calculation section is comprised of an upper limit sensor 111, a lower limit sensor 112, and the supply amount calculation section 11. ing.

以上の構成からなる本発明の一実施例の動作について以
下に説明する。The operation of one embodiment of the present invention having the above configuration will be described below.

原料タンク２１からホッパ２３へ原料を供給するに際し
、主制御部１４は、原料面２３１が下限センサ１１２に
よって検出される位置まで下降したときには、電磁バル
ブ２０を開くことによって原料の供給を開始し、原料面
２３１が上限センサ１１１によって検出される位置まで
上昇したときには、その供給を停止する。When supplying the raw material from the raw material tank 21 to the hopper 23, the main control unit 14 starts supplying the raw material by opening the electromagnetic valve 20 when the raw material surface 231 has descended to the position detected by the lower limit sensor 112, When the raw material surface 231 rises to the position detected by the upper limit sensor 111, its supply is stopped.

そのため供給量演算部１１は、上限センサ１１１によっ
て原料面２３１が検出され、原料の供給が停止されたと
きから、下限センサ１１２によって原料面２３１が検出
されるまでの時間の計測を行い、単位時間当たりについ
て、原料が押出部３６に供給される量の演算を行う。そ
してその演算結果が引取速度演算部１３に送出される。Therefore, the supply amount calculation unit 11 measures the time from when the raw material surface 231 is detected by the upper limit sensor 111 and the supply of raw materials is stopped until the raw material surface 231 is detected by the lower limit sensor 112, and calculates the unit time. Regarding the hit, the amount of raw material to be supplied to the extrusion section 36 is calculated. Then, the calculation result is sent to the take-up speed calculation section 13.

この値をＸとする。Let this value be X.

一方、主制御部１４は、出力１４ａにより引取速度を、
出力１４ｂにより目標製品厚みを、出力１４ｃにより原
料の密度を示すことから、引取速度（引取ローラ１８を
回転させる速度）をＬ　ｎｏｗ、目標製品厚みをＤ、原
料の密度をρとすると共に、カッタ１５の出力によって
示される製品幅をＷとし、フィルム幅センサ１６の出力
によって示される成形物５１の幅をＷ、に、を定数とす
ると、これら５つの出力が導かれた耳貴演算部１２はＹ
＝に＋　ＸＬｎｏｗ　Ｘ　（Ｗ−ｗ）ｘＤｘρなる値Ｙ
を演算する。On the other hand, the main control unit 14 controls the take-up speed using the output 14a.
The output 14b indicates the target product thickness, and the output 14c indicates the density of the raw material. Let W be the product width indicated by the output of the film width sensor 15, and W be the width of the molded product 51 indicated by the output of the film width sensor 16 as constants. Y
= + XLnow X (W-w)xDxρ value Y
Calculate.

この演算における（Ｗ−ｗ）は耳の幅を示し、Ｄが成形
物５１の厚みを示す（目標製品厚みであるが、成形物５
１の厚みは目標製品厚みに一致した制御が行われている
ことから、成形物５１の厚みを示す数値となる）ため、
演算結果Ｙは、単位時間当たりの押出部３６に供給され
る耳の量を示す値となる。In this calculation, (W-w) indicates the width of the selvage, and D indicates the thickness of the molded product 51 (this is the target product thickness, but the molded product 51
Since the thickness of 1 is controlled to match the target product thickness, it is a numerical value indicating the thickness of the molded product 51).
The calculation result Y is a value indicating the amount of selvage supplied to the extrusion section 36 per unit time.

この値Ｙは、耳型演算部１２より引取速度演算部１３に
送出される。This value Y is sent from the ear shape calculation section 12 to the take-up speed calculation section 13.

引取速度演算部１３は、主制御部１４からの出力１４ｂ
、１４ｃによって示される値（目標製品厚みをＤ、原料
の密度をρとする）と供給量演算部１１より送出される
（ａ！Ｘ、耳型演算部１２より送出される値Ｙ及びフィ
ルム幅センサ１６より送出される値Ｗ、定数に２から Ｌｎｅｗ　＝Ｋｚ　ｘ　（Ｘ＋Ｙ）／　（ＷｘＤｘｐ）
なる演算を行い、その演算値Ｌｎｅ−を、新たな引取速
度（出力１３ａにより示される）として、主制御部１４
に送出する。The take-up speed calculation section 13 receives the output 14b from the main control section 14.
, 14c (where D is the target product thickness and ρ is the density of the raw material), the value sent out from the supply amount calculation section 11 (a!X, the value Y sent out from the ear shape calculation section 12, and the film width) Value W sent from sensor 16, constant 2 to Lnew = Kz x (X+Y)/(WxDxp)
The main control unit 14 calculates the calculated value Lne- as the new take-up speed (indicated by the output 13a).
Send to.

この演算における（Ｘ＋Ｙ）は、押出部３６に供給され
る原料（耳を含む）の重量を示し、（ＷｘＤｘｐ）は、
成形物５１の単位時間当たりに成形される単位厚みの重
量を示すことになるため、（ｌ！！Ｌｎｅ−は引き取り
を行うべき速度を示すこととなる。(X+Y) in this calculation indicates the weight of the raw material (including ears) supplied to the extrusion section 36, and (WxDxp) is
Since it indicates the weight of the unit thickness of the molded article 51 formed per unit time, (l!!Lne- indicates the speed at which the take-up should be performed).

そのため主制御部１４は、引取速度演算部１３より送出
される値Ｌ　ｎｅｗに従った速度で引取ローラ１８を回
転させる制御を行う。Therefore, the main control section 14 controls the take-up roller 18 to rotate at a speed according to the value L new sent from the take-up speed calculation section 13.

なおエアーポンプ１９に対する主制御部１４からの制御
は、成形物５１の幅のための制御となっている。Note that the control from the main control unit 14 to the air pump 19 is for the width of the molded product 51.

（発明の効果） 本発明に係るインフレーション成形装置は、耳型演算部
により演算され、原料として再使用される耳の量を示す
値と、原料供給量演算部によって演算される原料の値と
から、引取速度演算部において、耳を含む原料の重量の
演算と成形物の単位厚みにおける重量の演算とを行うこ
とにより、引取速度を算出する構成としているので、耳
を原料として再使用した場合にも、厚み検出装置を用い
ることなく成形物の厚みの制御を行うことが可能になる
という効果を奏する。(Effects of the Invention) The inflation molding apparatus according to the present invention is based on the value calculated by the ear shape calculation section and indicating the amount of the ears to be reused as raw material, and the value of the raw material calculated by the raw material supply amount calculation section. In the take-up speed calculation section, the take-up speed is calculated by calculating the weight of the raw material including the selvage and the weight of the molded product per unit thickness, so that when the selvage is reused as a raw material, Also, it is possible to control the thickness of the molded product without using a thickness detection device.

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

第１図は本発明の一実施例の電気的構成を示すブロック
線図、第２図は本発明の一実施例の成形装置本体を示す
概略図である。 １１・・・供給量演算部 １１１・・・上限センサ １１２・・・下限センサ １２・・・耳型演算部 １３・・・引取速度演算部 １３ａ・・・新たな引取速度を示す出力１４ａ・・・引
取速度を示す出力 １４ｂ・・・目標製品厚みを示す出力 １４ｃ・・・原料の密度を示す出力 １５・・・カッタ １６・・・フィルム幅センサ ５１・・・成形物 ５３・・・耳。FIG. 1 is a block diagram showing the electrical configuration of one embodiment of the present invention, and FIG. 2 is a schematic diagram showing the main body of a molding apparatus according to one embodiment of the present invention. 11... Supply amount calculation unit 111... Upper limit sensor 112... Lower limit sensor 12... Ear type calculation unit 13... Pick-up speed calculation unit 13a... Output 14a indicating new pick-up speed... - Output 14b indicating take-up speed... Output 14c indicating target product thickness... Output 15 indicating raw material density... Cutter 16... Film width sensor 51... Molded object 53... Ear.

Claims (1)

【特許請求の範囲】 １）成形物から切り取られた耳を原料として再使用する
インフレーション成形装置において、前記耳以外の原料
の減少速度に基いて、前 記耳以外の原料の供給量を算出する原料供給量演算部と
、 成形物の幅を検出するフィルム幅センサと、このフィル
ム幅センサの出力と成形物の引 取速度と目標製品厚みと製品幅と原料の密度とから、原
料として再使用される耳の供給量を算出する耳量演算部
と、 この耳量演算部の出力と前記原料供給量演 算部の出力と前記フィルム幅センサの出力と前記目標製
品厚みと前記原料の密度とに基き、新たな引取速度の演
算を行う引取速度演算部とを備えたことを特徴とするイ
ンフレーション成形装置。[Scope of Claims] 1) In an inflation molding apparatus that reuses selvedges cut from molded products as raw materials, a raw material in which the supply amount of raw materials other than the selvages is calculated based on the rate of decrease of the raw materials other than the selvages. A supply amount calculation unit, a film width sensor that detects the width of the molded product, the output of this film width sensor, the take-up speed of the molded product, the target product thickness, the product width, and the density of the raw material to determine whether it will be reused as a raw material. a selvage amount calculation unit that calculates the amount of selvage supplied, based on the output of this selvage amount calculation unit, the output of the raw material supply amount calculation unit, the output of the film width sensor, the target product thickness, and the density of the raw material, An inflation molding device comprising: a take-up speed calculation unit that calculates a new take-up speed.
JP1319156A 1989-12-08 1989-12-08 Inflation molding equipment Expired - Lifetime JPH0737067B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1319156A JPH0737067B2 (en) 1989-12-08 1989-12-08 Inflation molding equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1319156A JPH0737067B2 (en) 1989-12-08 1989-12-08 Inflation molding equipment

Publications (2)

Publication Number Publication Date
JPH03180320A true JPH03180320A (en) 1991-08-06
JPH0737067B2 JPH0737067B2 (en) 1995-04-26

Family

ID=18107062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1319156A Expired - Lifetime JPH0737067B2 (en) 1989-12-08 1989-12-08 Inflation molding equipment

Country Status (1)

Country Link
JP (1) JPH0737067B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109228289A (en) * 2018-11-09 2019-01-18 重庆瑞霆塑胶有限公司 The processing method of IPE inflation film
GB2626230A (en) * 2022-11-23 2024-07-17 Smith & Nephew Method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109228289A (en) * 2018-11-09 2019-01-18 重庆瑞霆塑胶有限公司 The processing method of IPE inflation film
CN109228289B (en) * 2018-11-09 2020-08-25 重庆瑞霆塑胶有限公司 Processing method of IPE blown film
GB2626230A (en) * 2022-11-23 2024-07-17 Smith & Nephew Method

Also Published As

Publication number Publication date
JPH0737067B2 (en) 1995-04-26

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