JP2554147B2 - Winding machine tension control method - Google Patents

Winding machine tension control method

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Publication number
JP2554147B2
JP2554147B2 JP63296204A JP29620488A JP2554147B2 JP 2554147 B2 JP2554147 B2 JP 2554147B2 JP 63296204 A JP63296204 A JP 63296204A JP 29620488 A JP29620488 A JP 29620488A JP 2554147 B2 JP2554147 B2 JP 2554147B2
Authority
JP
Japan
Prior art keywords
winding
mechanical loss
coefficient
speed
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP63296204A
Other languages
Japanese (ja)
Other versions
JPH02144361A (en
Inventor
幸宏 石黒
健一 疋田
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP63296204A priority Critical patent/JP2554147B2/en
Publication of JPH02144361A publication Critical patent/JPH02144361A/en
Application granted granted Critical
Publication of JP2554147B2 publication Critical patent/JP2554147B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はプラスチックフィルム等の巻取装置におい
て、張力検出器を使用しないで高精度のフィルム巻取り
を行なう張力制御方法に関するものである。
Description: TECHNICAL FIELD The present invention relates to a tension control method for winding a film with high accuracy without using a tension detector in a winding device for a plastic film or the like.

(従来の技術) プラスチック等のフィルムを巻取るにあたり、各巻取
り前後の速度制御モード運転時にメカロスを測定し、そ
の測定値から固定分、速度比例分、巻取り重量比例分の
係数を算出し、巻始めから巻終わりまでの時々刻々のメ
カロス値を演算、補正することにより、実張力のフィー
ドバックなしに精度のよい張力を得る巻取制御方法とし
て、従来も特開昭58-202243号公報に記載のものが提案
されている。
(Prior Art) When winding a film such as plastic, the mechanical loss is measured during speed control mode operation before and after each winding, and the fixed portion, the speed proportional portion, and the winding weight proportional portion coefficient are calculated from the measured values, As a winding control method that obtains accurate tension without feedback of actual tension by calculating and correcting the mechanical loss value from the beginning of winding to the end of winding, it has been described in JP-A-58-202243. Have been proposed.

前記特開昭58-202243号公報の巻取制御方法を示す第
6図において、1はフィルム、2は引取ロール、3は回
転数検出器、4,5はガイドロール、6はターレット式巻
取機、7は押圧ロール、9は巻取軸、10は可変速電動
機、11はギヤ、12は回転数検出器、13は引取機、14は増
幅器、15は巻径演算器、16は張力基準演算器、17,18,1
9,20はボリューム、21は電流基準演算器、29は増幅器、
30は演算器、31は速度演算器、32は切換スイッチ、34は
直流電動機制御回路、43は係数演算器、44はメカロス補
正演算器、45は加算器である。
In FIG. 6 showing the winding control method of JP-A-58-202243, 1 is a film, 2 is a take-up roll, 3 is a rotation speed detector, 4,5 is a guide roll, and 6 is a turret type take-up. Machine, 7 is a pressing roll, 9 is a take-up shaft, 10 is a variable speed electric motor, 11 is a gear, 12 is a rotation speed detector, 13 is a take-up machine, 14 is an amplifier, 15 is a winding diameter calculator, 16 is a tension reference Calculator, 17,18,1
9,20 is volume, 21 is current reference calculator, 29 is amplifier,
30 is a calculator, 31 is a speed calculator, 32 is a changeover switch, 34 is a DC motor control circuit, 43 is a coefficient calculator, 44 is a mechanical loss correction calculator, and 45 is an adder.

第7図は第6図の巻取軸9にフィルム1を巻取る状態
を示すもので、(イ)は巻取る前の状態、(ロ)はフィ
ルム1の巻始めの状態、(ハ)は巻取り中の状態、
(ニ)は巻取軸9に巻取られたフィルム33が所定の長さ
に達し、カッタ46で切断された状態を示す。また第8図
は第6図における巻取り速度パターンを示す説明図であ
る。
FIG. 7 shows a state in which the film 1 is wound around the winding shaft 9 shown in FIG. 6, (a) is a state before winding, (b) is a state in which the film 1 is wound, and (c) is The state during winding,
(D) shows a state in which the film 33 wound around the winding shaft 9 reaches a predetermined length and is cut by the cutter 46. FIG. 8 is an explanatory diagram showing the winding speed pattern in FIG.

(発明が解決しようとする課題) 従来の第6図に示す巻取機張力制御方法は、固定分、
速度分及び重量分のメカロス補正による張力制御のた
め、特に低張力巻取では押圧ロールの押圧の影響を受け
てメカロスが増加し、フィルムのたるみ及びシワが発生
する等の問題があった。
(Problems to be Solved by the Invention) A conventional winding machine tension control method shown in FIG.
Since the tension is controlled by correcting the mechanical loss for the speed and the weight, there is a problem that the mechanical loss increases due to the influence of the pressure of the pressure roll, especially in the low tension winding, and the film sags and wrinkles occur.

本発明は空コアを巻取速度に同調させた後、押圧ロー
ルを空コアにタッチさせ、その時の電流増加分を自動測
定し、従来のメカロス補正に押圧ロールによるメカロス
分を加えることにより、前記の課題を解決し得る巻取機
の張力制御方法を提供しようとするものである。
The present invention, by synchronizing the empty core with the winding speed, touching the empty roll with the pressing roll, automatically measuring the amount of current increase at that time, and adding the mechanical loss by the pressing roll to the conventional mechanical loss correction, An object of the present invention is to provide a tension control method for a winding machine that can solve the above problem.

(課題を解決するための手段) このため本発明は、プラスチック等のフィルムを可変
速電動機を用いて巻取るにあたり、各巻取り開始前に測
定した電動機の回転数と、同電動機の電機子電流に基づ
き固定分メカロスの係数と速度比例分メカロスの係数を
係数演算器で演算すると共に、同係数と一巡前に測定し
た巻取り終了時の電動機の回転数、同電動機の電機子電
流、巻取り終了時の巻径に基づき巻取り重量比例分メカ
ロスの係数を同演算器で演算して、前記各係数に基づき
巻始めから巻終わりまでの各巻取り運転中の時々刻々の
メカロス値をメカロス補正演算器で演算、補正すること
により、巻取り運転中に各メカロスの係数を更新しなが
ら実張力のフィードバックなしに精度のよい張力を得る
ことを特徴とするフィルムの巻取制御方法において、空
コアを巻取速度に同調させた後、押圧ロールを同空コア
にタッチさせ、その時の電流増加分を自動測定して同押
圧ロールによるメカロス分を前記メカロス分に追加する
ようにしてなるもので、これを課題解決のための手段と
するものである。
(Means for Solving the Problems) Therefore, in winding the film of plastic or the like by using the variable speed electric motor, the present invention provides the number of rotations of the electric motor measured before the start of each winding and the armature current of the electric motor. Based on the coefficient calculator, the coefficient of the fixed mechanical loss and the coefficient of the mechanical loss proportional to the speed are calculated by the coefficient calculator, and the coefficient, the rotation speed of the motor at the end of winding measured before one cycle, the armature current of the motor, and the winding end. The mechanical loss coefficient proportional to the winding weight is calculated by the same calculator based on the winding diameter at that time, and the mechanical loss correction calculator calculates the mechanical loss value at each moment during each winding operation from the winding start to the winding end based on each coefficient. A film winding control method characterized by obtaining accurate tension without feedback of actual tension while updating the coefficient of each mechanical loss during the winding operation by calculating and correcting Then, after synchronizing the empty core with the winding speed, the pressure roll is touched to the empty core, and the current increase amount at that time is automatically measured to add the mechanical loss amount due to the same pressure roll to the mechanical loss amount. Which is a means for solving the problems.

(作用) 押圧ロールを有し、巻取軸に対し、線圧で押してお
り、空コアを巻取速度に同調させた後、押圧ロールを空
コアにタッチさせ、その時の電流増加分を自動測定して
押圧ロールによるメカロス分を追加することにより、精
度のよい張力を得る。また押圧ロールの押圧力によっ
て、巻取軸のメカロスが変化するため、その変化分を補
正することができ、巻取軸で巻取るフィルムの張力を適
正範囲に制御し、たるみ、しわ等の発生を防止すること
ができる。
(Function) It has a pressure roll and presses it against the winding shaft with linear pressure. After synchronizing the empty core with the winding speed, the pressure roll is touched to the empty core and the current increase at that time is automatically measured. Then, by adding the mechanical loss amount due to the pressing roll, accurate tension can be obtained. Also, because the mechanical loss of the take-up shaft changes depending on the pressing force of the pressing roll, the change can be corrected, and the tension of the film wound by the take-up shaft can be controlled within an appropriate range to generate slack, wrinkles, etc. Can be prevented.

(実施例) 以下本発明を図面の実施例について説明すると、第1
図は本発明の第1実施例を示すもので、フィルム1は前
工程である引取機13から連続するシートとして出されて
いる。引取ロール2は引取機13と連動して動いており、
また引取ロール2の周速はフィルムの走行速度と同じで
あり、回転数検出器3によりロール回転数を検出してい
る。フィルム1はガイドロール4,5を経てターレット式
巻取機6の巻取軸9に巻取られる。巻取軸9はギヤ列11
を介して可変速電動機10により駆動されており、可変速
電動機10の回転数は回転数検出器12により検出される。
なお、7は押圧ロール、33は巻取られたフィルムを示
す。
(Embodiment) The present invention will be described below with reference to embodiments of the drawings.
The drawing shows the first embodiment of the present invention, in which the film 1 is taken out as a continuous sheet from the take-up machine 13 which is the previous step. The take-up roll 2 is moving in conjunction with the take-up machine 13,
The peripheral speed of the take-up roll 2 is the same as the running speed of the film, and the rotation speed detector 3 detects the rotation speed of the roll. The film 1 is wound around the winding shaft 9 of the turret type winding machine 6 through the guide rolls 4 and 5. Winding shaft 9 is gear train 11
It is driven by the variable speed electric motor 10 via the, and the rotation speed of the variable speed electric motor 10 is detected by the rotation speed detector 12.
In addition, 7 is a pressing roll and 33 is a wound film.

次に第1図により巻取制御装置の構成を説明すると、
回転検出器3の信号は、増幅器14を介して引取速度v
(m/min)を出力する。なお、可変速電動機10は直流電
動機として説明する。15は巻径演算器で、v/(π×N)
の演算をし、巻径D(m)を出力する。16は張力基準演
算器で、張力基準値F0(kg)を演算出力する。17,18,1
9,20はボリュームで、17は巻取軸径D0(m)、18は最
大巻径DMAX(m)、19はテーパ率TP(%)、20は張力
設定値FS(kg)となり、張力基準演算器16に入力され
る。
Next, the configuration of the winding control device will be described with reference to FIG.
The signal from the rotation detector 3 passes through the amplifier 14 and the take-up speed v
(M / min) is output. The variable speed motor 10 will be described as a DC motor. 15 is a winding diameter calculator, v / (π × N)
And the winding diameter D (m) is output. Reference numeral 16 is a tension reference calculator which calculates and outputs a tension reference value F 0 (kg). 17,18,1
9, 20 is a volume, 17 is a winding shaft diameter D 0 (m), 18 is a maximum winding diameter D MAX (m), 19 is a taper rate T P (%), 20 is a tension set value F S (kg) And is input to the tension reference calculator 16.

21は電流基準演算器で、張力基準演算器16の出力F0
(kg)と、巻径演算器15の出力Dの入力によって演算を
し、電流基準値CR(A)を出力する。43は係数演算器
で、固定分、速度分、重量分の係数演算をするものであ
る。47は押圧ロールによるメカロス係数演算器である。
44はメカロス補正演算器で、係数演算器43、押圧メカロ
ス係数演算器47、巻径演算器15、増幅器29からの入力に
よってメカロス補正演算をし、メカロス補正値CMEC
出力する。
Reference numeral 21 is a current reference calculator, which is the output F 0 of the tension reference calculator 16.
(Kg) and the output D of the winding diameter calculator 15 are input to perform calculation, and the current reference value C R (A) is output. Reference numeral 43 is a coefficient calculator, which calculates coefficients for fixed parts, speed parts, and weight parts. 47 is a mechanical loss coefficient calculator for the pressing roll.
A mechanical loss correction calculator 44 performs mechanical loss correction calculation by input from the coefficient calculator 43, the pressing mechanical loss coefficient calculator 47, the winding diameter calculator 15, and the amplifier 29, and outputs the mechanical loss correction value C MEC .

45は加算器で、電流基準値CRとメカロス補正値CMEC
とを加算し、電流指令値CCOMを出力する。一方回転検
出器12の信号は、増幅器29を介して巻取軸9の回転数を
出力し、引取速度vは演算器30により直流電動機相当の
回転数NVに変換する。31は速度演算器で、増幅器29と
演算器30とによって速度演算し、速度指令値NCOMを出
力する。34は直流電動機制御回路で、切換スイッチ32を
介してCCOM又はNCOMが入力され、同直流電動機制御回
路34の信号で直流電動機10が駆動される。
45 is an adder, which is a current reference value C R and a mechanical loss correction value C MEC
And are added and the current command value C COM is output. Whereas the signal of the rotation detector 12 outputs the rotation speed of the winding shaft 9 via the amplifier 29, the take-up speed v is converted to the rotational speed N V equivalent DC motor by calculator 30. A speed calculator 31 calculates the speed by the amplifier 29 and the calculator 30, and outputs a speed command value N COM . A DC motor control circuit 34 receives C COM or N COM via the changeover switch 32, and drives the DC motor 10 by a signal from the DC motor control circuit 34.

次に第1図により巻取制御装置の作用を説明すると、
回転数検出器3の信号は、増幅器14を介して引取速度v
(m/min)を出力する。また巻径演算器15はv/(π×
N)の演算をし、巻径D(m)を出力する。但し、N
(rpm)は電動機回転数である。また張力基準演算器16
は張力基準値F0(kg)を演算出力する。17,18,19,20は
ボリュームで、張力基準演算器16で演算する張力基準値
0の演算係数を与えるものであり、ボリューム17は巻
取軸径D0(m)、ボリューム18は最大巻径D
MAX(m)、ボリューム19はテーパ率TP(%)、ボリュ
ーム20は張力設定値FS(kg)をそれぞれ与える。また
張力基準演算器16は、 なる演算を実行する。電流基準演算器21はK1×F0×D
なる演算を実行し、電流基準値CR(A)を出力する。
但しK1は変換係数で、単位はA/kg・mである。
Next, the operation of the winding control device will be described with reference to FIG.
The signal from the rotation speed detector 3 is sent to the take-up speed v via the amplifier 14.
(M / min) is output. In addition, the winding diameter calculator 15 has v / (π ×
N) is calculated, and the winding diameter D (m) is output. However, N
(Rpm) is the motor speed. In addition, the tension reference calculator 16
Calculates and outputs the tension reference value F 0 (kg). 17,18,19,20 are volumes, which give a calculation coefficient of the tension reference value F 0 calculated by the tension reference calculator 16, the volume 17 is the winding shaft diameter D 0 (m), and the volume 18 is the maximum. Roll diameter D
MAX (m), the volume 19 gives the taper rate T P (%), and the volume 20 gives the tension set value F S (kg). In addition, the tension reference calculator 16 To perform the operation. The current reference calculator 21 is K 1 × F 0 × D
Then, the current reference value C R (A) is output.
However, K 1 is a conversion coefficient, and the unit is A / kg · m.

係数演算器43は、後述する(5)式,(6)式,
(7)式を演算し、係数KM1,KM2,KM3を求め、押圧メカ
ロス係数演算器47は、押圧ロール7がタッチした時の電
流増加分の係数KM4を求めるものであり、メカロス補正
演算器44は、係数KM1,KM2,KM3,KM4と巻径D、電動機回
転数Nにより(1)式を演算し、メカロス補正値CMEC
を出力する。また加算器45は、電流基準値CRとメカロ
ス補正値CMECとを加算し、電流指令値CCOMを出力する
ものである。
The coefficient calculator 43 uses equations (5), (6), and
Equation (7) is calculated to obtain the coefficients KM 1 , KM 2 and KM 3 , and the pressing mechanical loss coefficient calculator 47 calculates the coefficient KM 4 for the current increase when the pressing roll 7 touches. The correction calculator 44 calculates the equation (1) from the coefficients KM 1 , KM 2 , KM 3 , KM 4 , winding diameter D, and motor rotation speed N, and the mechanical loss correction value C MEC
Is output. The adder 45 adds the current reference value C R and the mechanical loss correction value C MEC and outputs a current command value C COM .

29は増幅器で、回転数検出器12の出力を電動機回転数
Nに変換するものであり、引取速度vは演算器30により
直流電動機相当の回転数NVに変換する。また速度演算
器31は後述する速度N1,N2,N3を演算し、速度指令値N
COMを出力する。直流電動機制御回路34には、切換スイ
ッチ32を介してCCOM又はNCOMが入力され、同直流電動
機制御回路34の信号で直流電動機10が駆動される。
An amplifier 29 converts the output of the rotation speed detector 12 into a rotation speed N of the electric motor, and the take-up speed v is converted into a rotation speed N V corresponding to the DC motor by the calculator 30. Further, the speed calculator 31 calculates speeds N 1 , N 2 and N 3 which will be described later to obtain a speed command value N.
Output COM . C COM or N COM is input to the DC motor control circuit 34 via the changeover switch 32, and the DC motor 10 is driven by the signal of the DC motor control circuit 34.

第2図は巻取軸9にフィルム1を巻取る状態を示した
ものである。先ず第2図(イ)は巻取る前の状態を示
し、巻取軸9の周速はフィルム1の走行速度と一致して
駆動される。この時第1図の切換スイッチ32は、破線の
状態にある。第2図(ロ)は(イ)のフィルム速度で押
圧ロールが巻取軸9にタッチする状態を示す。また第2
図(ハ)はフィルム1の巻き始めを示し、カッタ46が動
作してフィルム1は切断され、巻取軸9に巻取られる。
FIG. 2 shows a state in which the film 1 is wound around the winding shaft 9. First, FIG. 2A shows a state before winding, and the peripheral speed of the winding shaft 9 is driven so as to match the traveling speed of the film 1. At this time, the changeover switch 32 of FIG. 1 is in the state of the broken line. FIG. 2B shows a state in which the pressing roll touches the winding shaft 9 at the film speed shown in FIG. Also the second
The figure (c) shows the winding start of the film 1, and the cutter 46 operates to cut the film 1 and wind it on the winding shaft 9.

第2図(ニ)は巻取り中の状態を示し、巻取られたフ
ィルム33の巻き太って行く。第2図(ホ)は巻取軸9に
巻取られたフィルム33が所定の長さに達し、カッタ46で
フィルム1と巻取られたフィルム33とが切り離された状
態を示す。この時新しい巻取軸35がセットされている。
なお、第2図(ハ)(ニ)(ホ)では、第1図の切換ス
イッチ32は実線に示す状態にある。
FIG. 2D shows a state during winding, in which the wound film 33 is getting thicker. FIG. 2 (e) shows a state in which the film 33 wound around the winding shaft 9 reaches a predetermined length and the cutter 46 separates the film 1 from the wound film 33. At this time, a new winding shaft 35 is set.
2 (c), (d), and (e), the changeover switch 32 in FIG. 1 is in the state shown by the solid line.

フィルムが巻き太るに従い、第1図の如く巻取られた
フィルム33の重量w(kg)は重くなり、巻取軸9を指示
するベアリング(図には示していない)に影響を与え、
メカロスを増やすことになる。また巻取られたフィルム
の重量は(D2−▲D2 0▼)に比例するので、ここでは
メカロスを(1)式で近似する。
As the film becomes thicker, the weight w (kg) of the film 33 wound as shown in FIG. 1 becomes heavier, which affects the bearing (not shown in the figure) that indicates the winding shaft 9,
Mecha loss will be increased. Further, since the weight of the wound film is proportional to (D 2 −ΔD 2 0 ), the mechanical loss is approximated by the equation (1) here.

但し、KM1,KM2,KM3,KM4は係数、Nは電動機回転数(rp
m)、Dは巻径(m)、D0は巻取軸径(m)、CMEC
メカロス補正電流(A)である。
However, KM 1 , KM 2 , KM 3 , and KM 4 are coefficients, and N is the motor speed (rp
m) and D are winding diameters (m), D 0 is a winding shaft diameter (m), and C MEC is a mechanical loss correction current (A).

第3図はメカロスの測定点を示す線図で、第2図
(イ)〜(ホ)に応じて変化する電動機回転数Nを示
す。さて第3図における区間37は第2図(ニ)に対応す
るもので、巻取られたフィルム33が巻き太るに従い、電
動機回転数Nは下降する。なお、区間41から区間37に変
わる時点38が第2図(ロ)(ハ)に対応するものであ
り、区間37の終了点39が第2図(ホ)に対応する。また
区間40と区間41は第2図(イ)(ロ)に対応する区間で
あるが、区間40では電動機回転数をN2とし、区間41で
は電動機回転数をN1とする。
FIG. 3 is a diagram showing the measurement points of the mechanical loss, and shows the motor rotation speed N which changes according to FIGS. 2 (a) to (e). The section 37 in FIG. 3 corresponds to FIG. 2D, and the motor rotation speed N decreases as the wound film 33 becomes thicker. The time point 38 at which the section 41 is changed to the section 37 corresponds to FIG. 2B and the end point 39 of the section 37 corresponds to FIG. Further, the section 40 and the section 41 correspond to the sections (a) and (b) of FIG. 2, but in the section 40, the motor rotation speed is N 2, and in the section 41, the motor rotation speed is N 1 .

区間40で電動機回転数が安定したら、電動機回転数N
2と電動機電機子電流C2とを測定する。区間41で電動機
回転数が安定したら、電動機回転数N1と電動機電機子
電流C1とを測定し、その後押圧ロール7を巻取軸8に
タッチさせ、電動機電機子電流C4を測定し、電流C1
対する電流増加分を検出する。また区間42では切換スイ
ッチ32が点線の状態で電動機を制御しており、電動機回
転数が安定したら、同電動機回転数N3と電動機電機子
電流C3と巻径D3を測定する。但し、巻径D3は時点39
でカッタが動作する直前の値を使用する。
When the motor speed stabilizes in section 40, the motor speed N
2 and the motor armature current C 2 are measured. When the electric motor rotation speed stabilizes in the section 41, the electric motor rotation speed N 1 and the electric motor armature current C 1 are measured, and then the pressing roll 7 is touched on the winding shaft 8 to measure the electric motor armature current C 4 . The amount of current increase with respect to the current C 1 is detected. Further, in the section 42, the changeover switch 32 controls the electric motor in the state of the dotted line, and when the electric motor rotation speed stabilizes, the electric motor rotation speed N 3 , the electric motor armature current C 3, and the winding diameter D 3 are measured. However, the winding diameter D 3 is 39 at the time point.
Use the value just before the cutter operates.

以上により測定したN2,C2,N1,C1,C4,N3,C3,D3を利用
して、前記(1)式の係数KM1,KM2,KM3,KM4を計算す
る。
Using the N 2 , C 2 , N 1 , C 1 , C 4 , N 3 , C 3 , and D 3 measured as described above, the coefficients KM 1 , KM 2 , KM 3 , and KM 4 of the equation (1) are used. To calculate.

また、N2,C2,N1,C1は第2図(イ)の状態、N1,C4
(ロ)の状態の測定値であり、この時の巻径DはD=D
0である。従って(1)式にN2,C2,N1,C1を代入すると C2=KM1+KM2×N2 ……(2) C1=KM1+KM2×N1 ……(3) C4=KM1+KM2×N1+KM4 ……(3−1) を得る。
Further, N 2 , C 2 , N 1 and C 1 are measured values in the state of FIG. 2A and N 1 and C 4 are measured values in the state of B, and the winding diameter D at this time is D = D.
It is 0 . Therefore, substituting N 2 , C 2 , N 1 , C 1 into the equation (1), C 2 = KM 1 + KM 2 × N 2 (2) C 1 = KM 1 + KM 2 × N 1 (3) C 4 = KM 1 + KM 2 × N 1 + KM 4 give ...... a (3-1).

次にN3,C3,D3を(1)式に代入すると (2)式,(3)式,(3−1)式,(4)式より KM1=(C2×N1−C1×N2)/(N1−N2) ……
(5) KM=(C1−C2)/(N1−N2) ……(6) KM4=C4−C1 ……(8) 但し、第3図よりN2,C2,N1,C1,C4は巻取り前に測定
できるが、N3,C3,D3は一巡前の巻取り時の測定値を使
う。なお、(5)式、,(6)式,(7)式及び(8)
式より、係数KM1,KM2,KM3,KM4が求められるので、巻取
り中のメカロス補正を(1)式で行なうことができる。
Next, substituting N 3 , C 3 , and D 3 into the equation (1), From equations (2), (3), (3-1), and (4), KM 1 = (C 2 × N 1 −C 1 × N 2 ) / (N 1 −N 2 ) ...
(5) KM 2 = (C 1 -C 2) / (N 1 -N 2) ...... (6) KM 4 = C 4 −C 1 (8) However, from FIG. 3, N 2 , C 2 , N 1 , C 1 , C 4 can be measured before winding, but N 3 , C 3 , D 3 Uses the measured value at the time of winding one cycle before. In addition, Formula (5), Formula (6), Formula (7), and (8)
Since the coefficients KM 1 , KM 2 , KM 3 , and KM 4 are obtained from the equation, the mechanical loss correction during winding can be performed by the equation (1).

以上の如く第1図における本発明の実施例を示す巻取
制御方法では、第6図の従来方式に対比して、押圧メカ
ロス係数演算器47が新たに設けられたことにより、高精
度のメカロス補正が得られ、高品質の製品を巻取ること
が出来るものである。
As described above, in the winding control method of the embodiment of the present invention shown in FIG. 1, in comparison with the conventional method shown in FIG. 6, since the pressing mechanical loss coefficient calculator 47 is newly provided, a high precision mechanical loss is obtained. Correction is obtained and high quality products can be rolled up.

第4図は第2実施例を示し、第1図の実施例に押圧ロ
ール初期設定器48を設けたもので、この設定器48はボリ
ュームにより押圧ロールの初期圧力を設定するもので、
押圧メカロス係数演算47の入力となるが、第1図の実施
例と作用効果において差異はない。
FIG. 4 shows a second embodiment, in which the pressure roll initial setting device 48 is provided in the embodiment of FIG. 1, and this setting device 48 sets the initial pressure of the pressing roll by the volume,
Although it is an input of the pressing mechanical loss coefficient calculation 47, there is no difference in operation and effect from the embodiment of FIG.

第5図は第4図の場合の巻取工程図で、巻取軸9にフ
ィルム1を巻取る状態を示したものである。先ず第5図
(イ)は巻取る前の状態で、巻取軸9の周速はフィルム
1の走行速度と一致して駆動される。この時第4図の切
換スイッチ32は、破線の状態にある。第5図(ロ)はフ
ィルム1の巻き始めを示し、カッタ46が動作してフィル
ム1は切断され、巻取軸9に巻取られる。また第5図
(ハ)は巻取り中の状態を示し、巻取られたフィルム33
は巻き太って行く。第5図(ニ)は巻取軸9に巻取られ
たフィルム33が所定の長さに達し、カッタ46でフィルム
1と巻取られたフィルム33とが切り離された状態を示
す。この時新しい巻取軸35がセットされている。なお、
第5図(ロ)(ハ)(ニ)では、第4図の切換スイッチ
32は実線に示す状態にある。
FIG. 5 is a drawing process drawing in the case of FIG. 4, and shows a state in which the film 1 is wound on the winding shaft 9. First, FIG. 5 (a) shows a state before winding, and the peripheral speed of the winding shaft 9 is driven so as to match the traveling speed of the film 1. At this time, the changeover switch 32 of FIG. 4 is in the state of the broken line. FIG. 5B shows the winding start of the film 1. The cutter 46 operates to cut the film 1, and the film 1 is wound around the winding shaft 9. Further, FIG. 5 (C) shows the state during winding, and the film 33
Rolls up. FIG. 5D shows a state in which the film 33 wound around the winding shaft 9 reaches a predetermined length and the cutter 1 separates the film 1 from the wound film 33. At this time, a new winding shaft 35 is set. In addition,
5 (b), (c), and (d), the changeover switch of FIG.
32 is in the state shown by the solid line.

(発明の効果) 以上詳細に説明した如く本発明は、押圧ロールを有
し、巻取軸に対し、線圧で押しており、空コアを巻取速
度に同調させた後、押圧ロールを空コアにタッチさせ、
その時の電流増加分を自動測定して押圧ロールによるメ
カロス分を追加することにより、精度のよい張力を得
る。また押圧ロールの押圧力によって、巻取軸のメカロ
スが変化するため、その変化分を補正することができ、
巻取軸で巻取るフィルムの張力を適正範囲に制御し、た
るみ、しわ等の発生を防止することができる。
(Effect of the Invention) As described in detail above, according to the present invention, the pressure roll is pressed against the winding shaft by linear pressure, and after the empty core is synchronized with the winding speed, the pressure roll is moved to the empty core. And touch
An accurate tension can be obtained by automatically measuring the amount of increase in current at that time and adding the amount of mechanical loss due to the pressing roll. Also, since the mechanical loss of the winding shaft changes depending on the pressing force of the pressing roll, the change can be corrected,
The tension of the film wound by the winding shaft can be controlled within an appropriate range to prevent the occurrence of slack and wrinkles.

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

第1図は本発明の巻取機の張力制御方法を実施する装置
のシステム図、第2図(イ)(ロ)(ハ)(ニ)(ホ)
は本発明の巻取工程を示す説明図、第3図は本発明の速
度パターンを示す線図、第4図は本発明の他の張力制御
方法を実施する装置のシステム図、第5図(イ)(ロ)
(ハ)(ニ)は第4図の場合の巻取工程を示す線図、第
6図は従来の巻取機の張力制御装置のシステム図、第7
図(イ)(ロ)(ハ)(ニ)は第6図の場合の巻取工程
を示す説明図、第8図は第6図の場合の速度パターンを
示す線図である。 図の主要部分の説明 1……フィルム、3……回転検出器 6……ターレット巻取機、7……押圧ロール 9……巻取軸、12……回転検出器 15……巻径演算器 16……張力基準演算器 17……巻取軸径ボリューム 18……最大巻径ボリューム 19……テーパ率ボリューム 20……張力設定ボリューム 21……電流基準演算器 29……増幅器 30……演算器 31……速度演算器 43……係数演算器 44……メカロス補正演算器 45……加算器 47……押圧メカロス係数演算器
FIG. 1 is a system diagram of an apparatus for carrying out the tension control method for a winding machine according to the present invention, and FIG.
Is an explanatory view showing a winding step of the present invention, FIG. 3 is a diagram showing a speed pattern of the present invention, FIG. 4 is a system diagram of an apparatus for carrying out another tension control method of the present invention, and FIG. B) (b)
(C) and (d) are diagrams showing the winding process in the case of FIG. 4, FIG. 6 is a system diagram of a tension control device of a conventional winding machine, and FIG.
FIGS. 8A, 8B, 8C and 8D are explanatory views showing the winding step in the case of FIG. 6, and FIG. 8 is a diagram showing the speed pattern in the case of FIG. Description of main parts of the figure 1 ... Film, 3 ... Rotation detector 6 ... Turret winder, 7 ... Press roll 9 ... Winding shaft, 12 ... Rotation detector 15 ... Roll diameter calculator 16 …… Tension reference calculator 17 …… Winding shaft diameter volume 18 …… Maximum winding diameter volume 19 …… Taper ratio volume 20 …… Tension setting volume 21 …… Current reference calculator 29 …… Amplifier 30 …… Calculator 31 …… Speed calculator 43 …… Coefficient calculator 44 …… Mechanical loss correction calculator 45 …… Adder 47 …… Pressing mechanical loss coefficient calculator

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】プラスチック等のフィルムを可変速電動機
を用いて巻取るにあたり、各巻取り開始前に測定した電
動機の回転数と、同電動機の電機子電流に基づき固定分
メカロスの係数と速度比例分メカロスの係数を係数演算
器で演算すると共に、同係数と一巡前に測定した巻取り
終了時の電動機の回転数、同電動機の電機子電流、巻取
り終了時の巻径に基づき巻取り重量比例分メカロスの係
数を同演算器で演算して、前記各係数に基づき巻始めか
ら巻終わりまでの各巻取り運転中の時々刻々のメカロス
値をメカロス補正演算器で演算、補正することにより、
巻取り運転中に各メカロスの係数を更新しながら実張力
のフィードバックなしに精度のよい張力を得ることを特
徴とするフィルムの巻取制御方法において、空コアを巻
取速度に同調させた後、押圧ロールを同空コアにタッチ
させ、その時の電流増加分を自動測定して同押圧ロール
によるメカロス分を前記メカロス分に追加することを特
徴とする巻取機の張力制御方法。
1. When winding a film of plastic or the like using a variable speed motor, a fixed mechanical loss coefficient and a speed proportional component are determined based on the number of rotations of the motor measured before the start of each winding and the armature current of the motor. The coefficient of mechanical loss is calculated by the coefficient calculator, and the winding weight ratio is based on the coefficient, the rotation speed of the motor at the end of winding, the armature current of the motor, and the winding diameter at the end of winding, measured one cycle before. By calculating the coefficient of the minute mechanical loss with the same arithmetic unit, and calculating and correcting the mechanical loss value every moment during each winding operation from the beginning of winding to the end of winding based on each coefficient by the mechanical loss correction arithmetic unit,
In the film winding control method, which is characterized by obtaining a precise tension without feedback of the actual tension while updating the coefficient of each mechanical loss during the winding operation, after synchronizing the empty core with the winding speed, A tension control method for a winder, wherein the pressure roll is touched on the same core, and an increase in current at that time is automatically measured to add a mechanical loss amount due to the same pressure roll to the mechanical loss amount.
JP63296204A 1988-11-25 1988-11-25 Winding machine tension control method Expired - Fee Related JP2554147B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63296204A JP2554147B2 (en) 1988-11-25 1988-11-25 Winding machine tension control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63296204A JP2554147B2 (en) 1988-11-25 1988-11-25 Winding machine tension control method

Publications (2)

Publication Number Publication Date
JPH02144361A JPH02144361A (en) 1990-06-04
JP2554147B2 true JP2554147B2 (en) 1996-11-13

Family

ID=17830519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63296204A Expired - Fee Related JP2554147B2 (en) 1988-11-25 1988-11-25 Winding machine tension control method

Country Status (1)

Country Link
JP (1) JP2554147B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52199A (en) * 1975-06-23 1977-01-05 Kokusai Electric Co Ltd Method of guiding blind person to walking road
JPS5299955A (en) * 1976-02-18 1977-08-22 Tokyo Shibaura Electric Co Tension controller
JPS58202243A (en) * 1982-05-18 1983-11-25 Mitsubishi Heavy Ind Ltd Film winding control

Also Published As

Publication number Publication date
JPH02144361A (en) 1990-06-04

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