JPH01105725A - Automatic control device for thickness of inflated tube - Google Patents

Automatic control device for thickness of inflated tube

Info

Publication number
JPH01105725A
JPH01105725A JP62263267A JP26326787A JPH01105725A JP H01105725 A JPH01105725 A JP H01105725A JP 62263267 A JP62263267 A JP 62263267A JP 26326787 A JP26326787 A JP 26326787A JP H01105725 A JPH01105725 A JP H01105725A
Authority
JP
Japan
Prior art keywords
tube
thickness
width
control mechanism
inflation tube
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
JP62263267A
Other languages
Japanese (ja)
Inventor
Kazuyuki Tanaka
和幸 田中
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 JP62263267A priority Critical patent/JPH01105725A/en
Publication of JPH01105725A publication Critical patent/JPH01105725A/en
Pending 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
    • B29C2948/92152—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
    • B29C2948/92009—Measured parameter
    • B29C2948/9218—Weight
    • 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
    • B29C2948/92428—Calibration, after-treatment, or cooling zone
    • 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
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/92933—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

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

Abstract

PURPOSE:To automatically correct the thickness of a tube in a short time by a method wherein circuits of the equation between the rotational speed of pinch rolls and the thickness of an inflated tube and of the signal of the set width of the inflated tube are memorized on computer side so as to issue the set signal from the computer in order to control the thickness on take-off side. CONSTITUTION:A rotation control mechanism 15, which controls the rotation of pinch rolls on the basis of the established equation between the rotational speed of the pinch rolls and the thickness of a tube, is provided. A width control mechanism 5 is installed at the rear of the pinch rolls so as to automatically control the exhaustion and suction of the air in a tube. In an acceleration and deceleration commander 15b, the rotational speed of the pinch rolls is compared with that of the pinch rolls 2 corresponding to the set thickness. If the measured weight of the tube is lighter than the set weight of the tube, which is determined on the basis of the rotational speed of the pinch rolls corresponding to the set thickness, the rotational speed of the pinch rolls is decreased and controlled so as to attain the aimed thickness. Or, if said measured weight is heavier, said rotational speed is raised and controlled so as to realize the predetermined thickness.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はインフレーションチューブの厚さ自動測定装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic thickness measuring device for inflation tubes.

〔従来の技術〕[Conventional technology]

−ａに、押出機から押出された溶融状のインフレーショ
ンチューブ（以下単にチューブと略称する）は、２枚の
安定板によって導かれ、一定速度で回転しているピンチ
ロールによって引取られている。チューブ幅の調整は仕
上りチューブをスケールで計り、所定幅と異る場合には
溶融したチューブ内へ送る空気量を調整することによっ
て修正を行っている。また、厚みの調整においても同様
にして仕上りチューブを厚さ計で計り、目的値と異る場
合には押出機側のスクリュー回転速度や温度などを調整
して修正が行われている。In -a, the molten inflation tube (hereinafter simply referred to as tube) extruded from the extruder is guided by two stabilizing plates and taken up by pinch rolls rotating at a constant speed. The tube width is adjusted by measuring the finished tube using a scale, and if the width differs from the predetermined width, it is corrected by adjusting the amount of air sent into the molten tube. Furthermore, when adjusting the thickness, the finished tube is similarly measured with a thickness gauge, and if it differs from the target value, corrections are made by adjusting the screw rotation speed, temperature, etc. on the extruder side.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、かような従来のような手段で厚みを計っていた
のでは下記の点で種種問題点があった。However, when the thickness was measured by such conventional means, there were various problems in the following points.

（１）仕上がったチューブを、手動によって厚さ計で計
ってから、スクリュー回転数を可変し、また少し時間を
経たのちチューブが目的寸法に到達しているかどうかの
確認をしなければならないなど、目的値に到達するまで
に数回このような操作を繰返さなければならずかなりの
時間と熟練者を必要とした。(1) The finished tube must be manually measured with a thickness gauge, the screw rotation speed must be varied, and after a short period of time, it must be confirmed whether the tube has reached the desired dimensions. Such operations had to be repeated several times to reach the target value, requiring a considerable amount of time and skilled personnel.

（２）　　安定状態までもっていくためにはかなりの時
間を必要としたために、この間に不良品のチューブはど
んどん送出されるので材料費がかさみ、電気代はもちろ
んのこと人件費においても浪費がかさみ、製品のコスト
アンプとなった。(2) It took a considerable amount of time to reach a stable state, and during this time many defective tubes were sent out, increasing material costs and wasting money not only in electricity costs but also in labor costs. , the cost of the product has increased.

本発明は上述した点に鑑みて創案されたもので、その目
的とするところは、短時間でしかも自動的にチューブの
厚さ修正が行われ、しかも練熟者を必要とせず、製品の
コストダウンか可能なチューブの厚さ自動制御装置を提
供することにある。The present invention was devised in view of the above-mentioned points, and its purpose is to automatically correct the thickness of the tube in a short time, without requiring an experienced person, and to reduce the cost of the product. Our goal is to provide an automatic down/down tube thickness control device.

〔問題点を解決するための手段〕[Means for solving problems]

つまりその目的を達成するための手段は、１０　　押出
機から押出された溶融状のチューブを引取るピンチロー
ルの回転速度とインフレーションチューブの厚さとの関
係式を存し、この関係式に基づいてピンチロールの回転
を制御する回転制御機構と、 （２）　　ピンチロールの前方あるいは後方のいずれか
の場所に据付け、チューブの設定幅信号とチューブの実
測値信号との偏差によって押出機から押出されるチュー
ブ内の空気の排気あるいは吸気を自動的に制御する幅制
御機構と、 （３）　　所定時間内あるいは所定到達重量により、所
定時間内の場合にはその重量を量り、所定到達重量の場
合には到達したときの時間を計ってこれらの信号を回転
制御機構に伝達する計量機構のそれぞれから構成されて
いる。In other words, the means to achieve this objective is to have a relational expression between the rotational speed of the pinch roll that takes over the molten tube extruded from the extruder and the thickness of the inflation tube, and based on this relational expression, the pinch roll is (2) a rotation control mechanism that controls the rotation of the roll; and (2) a tube that is installed either in front or behind the pinch roll and is extruded from the extruder based on the deviation between the tube's set width signal and the tube's actual measurement value signal. a width control mechanism that automatically controls the exhaust or intake of air; It consists of a metering mechanism that measures the time when the rotation occurs and transmits these signals to the rotation control mechanism.

なお、本発明においては、本発明のチューブ幅を常に一
定に制御を行っている幅測定器であれば如何ような構成
であっても総て含まれる。また、チューブの重量を量る
手段としては、巻取機で巻取った原反を量ってもよく、
また所定時間ラインにおいてチューブの送出を停止させ
、堆積したその重量を量ってもよく、さらには巻取機自
体を量れるようにしておいて所定時間巻取ったのちの重
量を量ってもよい。さらにピンチロールの回転速度とチ
ューブの厚さとの関係式やチューブ幅の設定信号回路を
ＣＰＵ　（電子計算Ｊａ）にメモリーしておき、計量の
演算やチューブ幅の演算をＣＰＵ側で行ったりあるいは
回転制御機構や幅制御機構で演算を行ってそれぞれの制
御を行う場合もある。Note that the present invention includes any width measuring device having any configuration as long as the tube width of the present invention is always controlled to be constant. In addition, as a means of measuring the weight of the tube, it is also possible to weigh the raw material wound up with a winding machine.
Alternatively, the feeding of the tube may be stopped on the line for a predetermined period of time and the accumulated weight of the tube may be measured. Furthermore, the winding machine itself may be made to be able to be weighed and the weight may be measured after the tube has been wound for a predetermined period of time. good. In addition, the relational expression between the rotational speed of the pinch roll and the tube thickness and the tube width setting signal circuit are stored in the CPU (electronic calculation Ja), and weighing calculations and tube width calculations are performed on the CPU side or the rotation In some cases, a control mechanism or a width control mechanism performs calculations to perform each control.

以下本発明にかかるインフレーションチューブの厚さ自
動制御装置の実施例を図面に基づいて詳述すると共に、
併せて作用も説明する。Hereinafter, embodiments of the automatic thickness control device for an inflation tube according to the present invention will be described in detail based on the drawings.
The action will also be explained.

〔実施例〕〔Example〕

第１図は本発明のものの一実施例を説明するための全体
概略構成図、第２図はその主要部としての一例を示す正
面図、第３図は第１図の主要部としての他側を示す正面
図、第４図は本発明の幅制御機構を説明するためのブロ
ック図、第５図は本発明の回転制御機構を説明するため
のブロック図、第６図は本発明の計量機構を説明するた
めのブロツク図である。Fig. 1 is an overall schematic configuration diagram for explaining one embodiment of the present invention, Fig. 2 is a front view showing an example of its main part, and Fig. 3 is the other side of the main part of Fig. 1. FIG. 4 is a block diagram for explaining the width control mechanism of the present invention, FIG. 5 is a block diagram for explaining the rotation control mechanism of the present invention, and FIG. 6 is a metering mechanism of the present invention. FIG.

第１図において、押出機（図示せず）から押出された？
容融状のチューブ１はピンチロール２て引取られ、ガイ
ドロール３を経て巻取機（図示せず）にセントされてい
る紙管４に巻取られている。またチューブ１の幅は後述
する幅制御機構５によって一定幅に制御されている。電
磁弁６は空気をチューブ１内へ排気する系統で、電磁弁
７はチューブ１内から吸気する系統である。In FIG. 1, ? is extruded from an extruder (not shown)?
The molten tube 1 is taken up by pinch rolls 2, passed through guide rolls 3, and wound onto a paper tube 4 which is fed to a winder (not shown). Further, the width of the tube 1 is controlled to a constant width by a width control mechanism 5, which will be described later. The solenoid valve 6 is a system for exhausting air into the tube 1, and the solenoid valve 7 is a system for sucking air from inside the tube 1.

すなわち、本装置はピンチロールの回転速度とチューブ
１の厚さとの関係式を有し、この関係式からピンチロー
ル２の回転を制御する回転制御機構（第５図）と、ピン
チロール２の後方に据付けられ、チューブ１の設定幅信
号とチューブ１の実測値信号との偏差によって押出機か
ら押出されるチューブ１内の空気の排気あるいは吸気を
自動的に制御する幅制御機構（第４図）と、所定時間内
の仕上りチューブの重量を量り、この重量に見合う出力
信号を回転制御機構に伝達する計量機構（第６図）のそ
れぞれから構成されている。That is, this device has a relational expression between the rotational speed of the pinch roll and the thickness of the tube 1, and from this relational expression, a rotation control mechanism (FIG. 5) that controls the rotation of the pinch roll 2 and a rear side of the pinch roll 2 are provided. A width control mechanism (Fig. 4) that is installed in the tube 1 and automatically controls the exhaust or intake of air in the tube 1 extruded from the extruder according to the deviation between the set width signal of the tube 1 and the actual measurement value signal of the tube 1. and a weighing mechanism (FIG. 6) that measures the weight of the finished tube within a predetermined time and transmits an output signal corresponding to the weight to the rotation control mechanism.

計量機構は第２図および第３図に示されているごとく２
通りの手段があり、第２図においては第１図に示す生産
工程において原反４′の巻取りが完了して秤８に掛けら
れている。そして、指示計９にその重量が表示され、こ
の重量に見合う電圧信号が指示計１０に指示される。同
時にこの電圧信号は出力端子１）から回転制御機構に伝
達される。１２は電源スィッチである。The metering mechanism is 2 as shown in Figures 2 and 3.
In FIG. 2, the original fabric 4' has been completely wound in the production process shown in FIG. 1 and is placed on a scale 8. Then, the weight is displayed on the indicator 9, and a voltage signal corresponding to this weight is instructed to the indicator 10. At the same time, this voltage signal is transmitted from the output terminal 1) to the rotation control mechanism. 12 is a power switch.

また第３図はピンチロール２から引取っているチューブ
１′は後方のピンチロール１３を所定時間停止させるこ
とによって秤１４上にチューブ１′を堆積させてその重
量を量っている状態を示している。このときの重量測定
は周期的に行われ、電圧信号として換算された信号は回
転制御機構に伝達される。FIG. 3 also shows a state in which the tube 1' taken from the pinch roll 2 is deposited on the scale 14 and weighed by stopping the rear pinch roll 13 for a predetermined period of time. ing. Weight measurement at this time is performed periodically, and a signal converted into a voltage signal is transmitted to the rotation control mechanism.

次にこれらの作用を詳細に説明する。Next, these effects will be explained in detail.

第４図において、幅制御機構５には幅設定器５゜か組み
込まれている。この幅設定器５１の設定値はチューブ１
′を生産する前に設定されるもので、目的の幅に手動で
もって操作される。なおチエーブ幅設定器は幅制御機構
５内に組み込まず、ＣＰｏ　５　ａに組み込まれている
場合もある。In FIG. 4, the width control mechanism 5 includes a width setting device 5°. The setting value of this width setting device 51 is
′ is set before production, and is manually manipulated to the desired width. Note that the cheese width setting device may not be incorporated into the width control mechanism 5, but may be incorporated into the CPo 5a.

このようにしていずれかにおいて設定された幅信号は切
替器５．（ない場合もある）を経て比較器５ｃに与えら
れる。In this way, the width signal set in either switch 5. (there may be cases where there is no such signal) and the signal is provided to the comparator 5c.

一方センサ５゜は引取り中のチューブ１′を針る幅検出
用のもので、片側に２ケのセンサ、他方に１ケのセンサ
を有し、さらに幅側急速空気量制御用として１ケのセン
サを有する側の内側に急速広大用センサ、外側に急速縮
少用センサの合計５ケのセンサがあり、チューブ１′の
吸上げと同時に作用し、チューブ１内の空気の排気、給
気を制御して常時チューブ幅を計測している。そしてこ
の出力信号は比較器５ｃに与えられ、ここで設定幅信号
と検出幅信号との比較が行われる。つまり、設定幅より
検出幅の方が大きい場合には、第１図に示した電磁弁７
を付勢させてチューブ１内の吸気を行い、小さい場合に
は電磁弁６を付勢させてチューブ１内へ空気を排気する
。On the other hand, the sensor 5° is for detecting the width of the tube 1' being taken up, and has two sensors on one side and one sensor on the other side, and one sensor for controlling the rapid air amount on the width side. There are a total of 5 sensors: a rapid expansion sensor on the inside of the side with the sensor, and a rapid contraction sensor on the outside. The tube width is constantly measured by controlling the This output signal is then given to a comparator 5c, where a comparison is made between the set width signal and the detected width signal. In other words, if the detection width is larger than the set width, the solenoid valve 7 shown in FIG.
is energized to suck air into the tube 1, and when the amount is small, the solenoid valve 6 is energized to exhaust air into the tube 1.

ここで、前述した急速空気量制御用センサに関しもう少
し詳細に説明する。Here, the aforementioned rapid air amount control sensor will be explained in more detail.

急速制御用センサは本来の幅側制御用のものとしてなく
てはならないというものではなく、場合によってはない
場合もある。The rapid control sensor does not necessarily have to be used for the original width side control, and may not be present depending on the case.

さて、前述したごとく、１ケの幅側用のセンサの両側に
センサを設けたという目的は、設定幅の変更を行ったり
するときに使用され、例えば幅小のものを幅大の径にも
っていく場合、通常の制御方法では空気の注入量が少な
く、少しづつチューブ内に空気を排気するので時間がか
かってしまう。Now, as mentioned above, the purpose of providing sensors on both sides of one width sensor is to use it when changing the set width, for example, by changing the width from a small width to a larger diameter. In this case, the normal control method requires a small amount of air to be injected and exhausts the air into the tube little by little, which takes time.

このことは不良品のチューブを沢山送出することとなっ
て材料費の無駄となる。そこで、このように例えばＣＰ
Ｕから、現在のＬｏｏｆｆｉｓ幅から５００ｍｍ幅の設
定幅に切替わった信号が伝えられたら、内側のセンサが
作用してチューブ内に多量の空気を送り込み、短時間で
目的値に到達して停止する。This results in a large number of defective tubes being sent out, resulting in wasted material costs. Therefore, for example, CP
When a signal is sent from U that the current Looffis width has been changed to the set width of 500mm, the inner sensor will act to send a large amount of air into the tube, reaching the target value in a short time and stopping. .

また５００＊ａ＋から１０Ｏｎ＋ｍに縮小する場合にお
いても同様にして外側のセンサが働く。Also, when reducing from 500*a+ to 10On+m, the outer sensor works in the same way.

なお、図示されていないが、チューブ幅を表示する表示
計と設定幅を表示する表示計を取着する場合もある。さ
らに、チューブの吸上げの際、チューブの径が凹凸とな
らないよう、排気、給気の応答性が調整できるような調
整器も幅制御機構に備えられている。Although not shown, a display meter that displays the tube width and a display meter that displays the set width may be attached. Furthermore, the width control mechanism is also equipped with an adjuster that can adjust the responsiveness of exhaust and air supply so that the diameter of the tube does not become uneven when suctioning the tube.

かくして、以上のごとく構成された幅制御機構は、常に
一定したチューブ幅のものを連続して送出している。Thus, the width control mechanism configured as described above always continuously delivers tubes with a constant width.

次に第５図において、回転制御機構１５にはピンチロー
ル２の回転速度とチューブ１′の厚さとの関係式を有す
る演算器、すなわち設定器１５゜が組み込まれており、
所定厚さのチューブが設定できるようになっている。そ
して、この設定信号は重量によるピンチロールの加減指
令器１５ｂに与えられている。またこの加減指令器１５
．にはチューブ１′の重量を量ったときの値が電圧信号
として後述する計量機構１６から与夫られている。Next, as shown in FIG. 5, the rotation control mechanism 15 incorporates a computing device, that is, a setting device 15°, which has a relational expression between the rotational speed of the pinch roll 2 and the thickness of the tube 1'.
A tube of a predetermined thickness can be set. This setting signal is given to the weight-based pinch roll adjustment command device 15b. Also, this adjustment command device 15
．． The value obtained when the weight of the tube 1' is measured is provided as a voltage signal from a weighing mechanism 16, which will be described later.

この加減指令器１５．において、設定厚さに対するピン
チロール２の回転速度と対比され、測定した重量が設定
された重量に対するピンチロールの回転速度、厚さに対
し軽い場合には、ピンチロールの回転速度を減少せしめ
て目的の厚さに到達するよう制御される。また重い場合
にはその回転速度を上昇せしめて所定の厚さまで制御さ
れる。This adjustment command device 15. The rotation speed of the pinch roll 2 is compared with the rotation speed of the pinch roll 2 for the set thickness, and if the measured weight is lighter than the rotation speed of the pinch roll for the set weight or thickness, the rotation speed of the pinch roll is decreased to achieve the purpose. controlled to reach a thickness of If the material is heavy, the rotation speed is increased to control the thickness to a predetermined thickness.

次に、かような制御信号が回転速度指令器１５ｃに伝達
され、さらに増巾器１５４を経てモータ１６′に伝達さ
れる。１７はフィードバック用のタコゼネレータ（ＴＧ
）であり、回転速度指令器１５ｃにフィードバックされ
ている。Next, such a control signal is transmitted to the rotation speed command device 15c, and further transmitted to the motor 16' via the amplifier 154. 17 is a tacho generator (TG) for feedback.
) and is fed back to the rotational speed command device 15c.

さらに第６図においては、計量機構１６は自動的で且つ
周期的に秤量されるブロック図を示しており、所定周期
での計量１６１が開始されると、第３図に示すピンチロ
ール１３を停止せしめる信号がピンチロール停止１６．
に与えられ、チューブ１′はこのピンチロール１３から
の送出を停止させて所定時間チューブ１′を秤上に堆積
１６ｃさせる。そして、所定時間の経過後に重量測定１
６４が行われる。Furthermore, FIG. 6 shows a block diagram in which the weighing mechanism 16 automatically and periodically weighs, and when the weighing 161 at a predetermined period starts, the pinch roll 13 shown in FIG. 3 is stopped. The signal to stop the pinch roll 16.
The feeding of the tube 1' from the pinch roll 13 is stopped and the tube 1' is deposited on the balance 16c for a predetermined period of time. Then, after a predetermined time has elapsed, weight measurement 1
64 is performed.

測定が完了したのちは、ピンチロール１３の急速引取り
開始１６．となって所定時間、すなわち緩んでいたチュ
ーブがぴんと張られるまで急速引取りが行われ、その後
通常引取りへの切換１６゜が行われる。また、重量測定
を行った電圧信号は前述したごとく回転制御機構１５に
伝達される。After the measurement is completed, rapid take-off of the pinch roll 13 is started 16. Rapid withdrawal is then carried out for a predetermined period of time, ie, until the loose tube is taut, and then a 16° switch to normal withdrawal is performed. Furthermore, the voltage signal resulting from the weight measurement is transmitted to the rotation control mechanism 15 as described above.

このようにして本発明の厚み自動制御装置は、押出機側
で厚み制御を行うものでなく、引取り側で制御を行われ
るので、他の要素の外乱、例えば押出機側のスクリュー
回転速度のばらつき、押出量の変化、温度差などに影響
されず精摩の高いチューブの厚さが得られる。さらに、
これらのシステムはＣＰＵと連動した制御が行えるとこ
ろにも優しい特色があり、インフレーションチューブに
限らずラミネートのようなシート状のものに対してもピ
ンチロールの回転速度を変えて制御することができる。In this way, the automatic thickness control device of the present invention does not control the thickness on the extruder side, but on the withdrawal side, so it is possible to prevent disturbances caused by other elements, such as the screw rotation speed on the extruder side. Highly refined tube thickness can be obtained without being affected by variations, changes in extrusion rate, temperature differences, etc. moreover,
These systems have the advantage of being able to be controlled in conjunction with the CPU, and can control not only inflation tubes but also sheet-like materials such as laminate by changing the rotational speed of the pinch rolls.

シート状の場合、幅制御装置においてチューブ内に排気
、給気の制御は行われないが、押出機のスクリューの回
転制御が行われる。In the case of a sheet, the width control device does not control exhaustion or supply of air into the tube, but controls the rotation of the screw of the extruder.

〔発明の効果〕〔Effect of the invention〕

以上説明したごとく本発明によれば、均一な厚さのチュ
ーブを得るには余りにも変動要素の多いファクターが種
種の箇所にあり、例えば押出機からのチューブの押出量
変化やチューブの溶融状態などが原因で均一なチューブ
の仕上がりが期待出来なかったが、これを押出機側で制
御するのではなく引取り側（巻取機側）で制御するため
に押出量が変化してもこれに関係なく制御が行われ、し
かも従来のように安定な状態までもっていくためにはか
なりの時間を必要としたものが短時間でもって修正され
る。このことは無駄な材料を消費することがなくなり、
さらに本装置は練熟者を必要としないので人件費がかか
らず、あらゆる面において製品の大巾なコストダウンを
実現することが可能となった。As explained above, according to the present invention, in order to obtain a tube of uniform thickness, there are many variables at various points, such as changes in the amount of tube extruded from the extruder and the melting state of the tube. Due to this, it was not possible to expect a uniform tube finish, but since this is controlled not on the extruder side but on the take-up side (winding machine side), even if the extrusion rate changes, this does not matter. Furthermore, the system can be controlled in a short amount of time, and what previously required a considerable amount of time to reach a stable state can be corrected in a short period of time. This eliminates the consumption of wasted materials,
Furthermore, since this device does not require experienced personnel, labor costs are reduced, making it possible to achieve significant cost reductions in all aspects of the product.

よって、本発明のインフレーションチューブの厚さ自動
制御装置は、実用上、極めて存用性の高いものである。Therefore, the automatic inflation tube thickness control device of the present invention has extremely high practical utility.

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

第１図は本発明のものの一実施例を説明するための全体
概略構成図、第２図はその主要部としての一例を示す正
面図、第３図は第１図の主要部としての他側を示す正面
図、第４図は本発明の幅制御機構を説明するためのブロ
ック図、第５図は本発明の回転制御機構を説明するため
のブロック図、第６図は本発明の計量機構を説明するた
めのブロック図である。 １　、　１　’−−−−−・チューブ、２．１３・・・
・−ピンチロール、４　’−・・・原反、５・・・−幅
制御機構、６．７−・・・−電磁弁、８　、　１４−−
−−一秤、１５−・−・・・回転制御機構、１６−・−
・−・−計量機構。Fig. 1 is an overall schematic configuration diagram for explaining one embodiment of the present invention, Fig. 2 is a front view showing an example of its main part, and Fig. 3 is the other side of the main part of Fig. 1. FIG. 4 is a block diagram for explaining the width control mechanism of the present invention, FIG. 5 is a block diagram for explaining the rotation control mechanism of the present invention, and FIG. 6 is a metering mechanism of the present invention. FIG. 2 is a block diagram for explaining. 1, 1'----Tube, 2.13...
・-Pinch roll, 4'-- Original fabric, 5...- Width control mechanism, 6.7-- Solenoid valve, 8, 14--
--One scale, 15--... Rotation control mechanism, 16--
・−・−Measuring mechanism.

Claims (4)

【特許請求の範囲】[Claims] （１）押出機から押出された溶融状のインフレーション
チューブをピンチロールで引取る装置において、前記ピ
ンチロールの回転速度とインフレーションチューブの厚
さとの関係式を有する回転制御機構と、ピンチロールの
前方あるいは後方のいずれかの場所に据付けられ、イン
フレーションチューブの設定幅信号とチューブ幅実測値
信号との偏差によって押出機から押出されるインフレー
ションチューブ内の空気の排気あるいは吸気を制御する
幅制御機構と、所定時間内の仕上りインフレーションチ
ューブの重量を量り、この重量に見合う出力信号を前記
回転制御機構に伝達する計量機構から構成されることを
特徴としたインフレーションチューブの厚さ自動制御装
置。(1) In a device for taking over a molten inflation tube extruded from an extruder with a pinch roll, a rotation control mechanism having a relational expression between the rotational speed of the pinch roll and the thickness of the inflation tube; a width control mechanism that is installed somewhere in the rear and controls the exhaust or intake of air in the inflation tube that is extruded from the extruder depending on the deviation between the set width signal of the inflation tube and the measured tube width signal; An automatic thickness control device for an inflation tube, comprising a weighing mechanism that measures the weight of a finished inflation tube within a given time and transmits an output signal corresponding to the weight to the rotation control mechanism. （２）インフレーションチューブの設定幅信号をＣＰＵ
から与え、チューブ幅実測値信号との偏差を幅制御機構
にて行わせることを特徴とした特許請求の範囲第（１）
項記載のインフレーションチューブの厚さ自動制御装置
。(2) Send the inflation tube setting width signal to the CPU
Claim (1) characterized in that the deviation from the tube width actual measurement value signal is determined by a width control mechanism.
Automatic thickness control device for inflation tubes as described in Section 1. （３）所定時間内の仕上りインフレーションチューブの
重量を、チューブの巻取りが完了して装置から外した原
反を秤で量ってその重量に見合う電圧信号を回転制御機
構に与えるか、あるいは引取中のチューブを所定時間い
ったん秤上に堆積させ自動的にその重量を量ると共にそ
れを電圧信号に換算して回転制御機構に与えるか、ある
いは巻取機自体を量ることが可能な状態にしておき所定
時間後または所定重量到達後にその全体重量を電圧信号
換算して回転制御機構に与えることを特徴とした特許請
求の範囲第（１）項および第（２）項記載のインフレー
ションチューブの厚さ自動制御装置。(3) The weight of the finished inflation tube within a predetermined time is determined by weighing the original fabric removed from the device after tube winding is completed, and applying a voltage signal corresponding to the weight to the rotation control mechanism, or by taking it back. Once the tube inside is deposited on a scale for a predetermined period of time, its weight is automatically measured, and it is converted into a voltage signal and sent to the rotation control mechanism, or the winding machine itself is put in a state where it can be weighed. The thickness of the inflation tube according to claims (1) and (2), wherein the entire weight is converted into a voltage signal and applied to the rotation control mechanism after a predetermined time or after reaching a predetermined weight. Automatic control device. （４）ピンチロールの回転速度とインフレーションチュ
ーブの厚さとの関係式や、インフレーションチューブの
設定幅信号の回路を電子計算機側にメモリーさせ、該電
子計算機から設定信号を発生せしめるよう構成したこと
を特徴とする特許請求の範囲第（１）項、第（２）項お
よび第（３）項記載のインフレーションチューブの厚さ
自動測定装置。(4) The relationship between the rotation speed of the pinch roll and the thickness of the inflation tube and the circuit for the set width signal of the inflation tube are stored in a computer, and the setting signal is generated from the computer. An apparatus for automatically measuring the thickness of an inflation tube according to claims (1), (2), and (3).
JP62263267A 1987-10-19 1987-10-19 Automatic control device for thickness of inflated tube Pending JPH01105725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62263267A JPH01105725A (en) 1987-10-19 1987-10-19 Automatic control device for thickness of inflated tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62263267A JPH01105725A (en) 1987-10-19 1987-10-19 Automatic control device for thickness of inflated tube

Publications (1)

Publication Number Publication Date
JPH01105725A true JPH01105725A (en) 1989-04-24

Family

ID=17387086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62263267A Pending JPH01105725A (en) 1987-10-19 1987-10-19 Automatic control device for thickness of inflated tube

Country Status (1)

Country Link
JP (1) JPH01105725A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03227217A (en) * 1990-01-31 1991-10-08 Sekisui Chem Co Ltd Thickness controlling device in multilayer inflation molding line
JPH03261538A (en) * 1990-03-09 1991-11-21 Toyo Denki Kk Draw-off controlling apparatus for inflation film manufacturing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03227217A (en) * 1990-01-31 1991-10-08 Sekisui Chem Co Ltd Thickness controlling device in multilayer inflation molding line
JPH03261538A (en) * 1990-03-09 1991-11-21 Toyo Denki Kk Draw-off controlling apparatus for inflation film manufacturing machine

Similar Documents

Publication Publication Date Title
CA1279246C (en) Stretch control for web materials being joined or laminated
JPH01105725A (en) Automatic control device for thickness of inflated tube
CA1279247C (en) Stretch control of materials to be laminated or joined
JPS62270263A (en) Control device for powder charging quantity in continuous caster
JPH06143410A (en) Device for controlling thickness of inflation film
JPH02137911A (en) Dimensional control device for molded material in inflation molding line
JPH061533A (en) Tension control device of winding/unwinding machine
JP2856656B2 (en) Extruder control unit
JPH01314136A (en) Synthetic resin film, method and device for film thickness-control in film molding of melt-extruding type
JPH09502770A (en) Carding / drafting leveler equipment
JPH071558A (en) Extrusion control of strip like rubber material
JPH0818365B2 (en) Intake control device for inflation film making machine
JPS5946775B2 (en) Extruder control method
JPH01285558A (en) Deterioration determining device for brake device
JP2554147B2 (en) Winding machine tension control method
JPH04239610A (en) Method of controlling change in molding speed of calender
JP3710505B2 (en) Glass tube outer diameter control device
JPH0539855Y2 (en)
JPH02179422A (en) Controlling method of weight of film or sheet
JPH1044231A (en) Method and adjusting thickness of oriented film
JPS6361093B2 (en)
JPS60246823A (en) Method and apparatus for correcting variation of lap weight
JPH03261539A (en) Amount of extrusion-controlling apparatus for inflation film manufacturing machine
JPH01186208A (en) Automatic plate thickness control device for rolling mill
CN117863422A (en) Automatic measurement control system for film thickness of casting machine