JPH0265679A - Control device for rewinding machine - Google Patents

Abstract

PURPOSE:To obtain a control device with a speed set quality and an operation quality stabilized by driving each section of a rewinding machine by an individual electric motor. CONSTITUTION:Drive motors 6A to 6E and driving power sources 7A to 7E, driving the respective section rolls 1 to 5, are provided, and speeds are controlled respectively by speed controllers 8A to 8E from a signal of comparators 10A to 10E comparing each speed detector 9A to 9E with a speed reference signal. A set speed control of each section from an unwinder roll 1 to a reel roll 5 needs to be performed by acceleration and deceleration. Accordingly, from a speed reference signal generator 11 of the reel roll 5 in a rewinding machine, a predetermined speed difference between the unwinder rolls 1, 2 and calender rolls 3, 4 is kept set by setters 12A to 12D, and the speed control is performed so as to hold a speed difference between the reel roll 5 and each section to a fixed value by the speed controllers 8A to 8E.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a control device for a paper winding machine for making tissue paper or the like.

(Prior Art) In a conventional tissue paper winding machine, its drive devices are mechanically coupled and driven by a single electric motor.

However, since each part such as the unwinder, calendar, and reel is connected by a reducer and a belt, maintenance thereof is difficult, and adjustment of the speed difference between each section is inconvenient because a belt shifter or the like is used.

(Problems to be Solved by the Invention) An object of the present invention is to provide a control device that drives each section of a tissue paper winder with an individual electric motor and stabilizes its speed uniformity and operability. .

[Structure of the invention]

(Means for Solving the Problems) For the above purpose, the present invention provides a control device comprising the following components.

■ A drive motor installed at the drive port L of each section of the winder, a drive power source and a speed controller for driving the motor.

■ Compare the reel speed reference signal of the winder, each speed setting device that can preset the speed difference between the reel and each section, and the signal between this speed setting signal and the speed detector that detects the speed of each section. A comparator that is input to the speed controller.

(3) A winding length counting circuit that counts the unwinding length from the speed detector signal, a paper thickness setting device, a roll diameter calculator that calculates the roll diameter from the winding length signal, and a common speed for the winding line. A function setter that determines a speed control gain to obtain a response according to the roll diameter, a response gain operator that obtains a response gain according to the roll diameter during operation from this function setter and the roll diameter calculation value, A gain adjuster that gives the optimal gain to each speed controller based on the signal.

(Function) In the tissue paper winding machine configured in this way, the driving rolls of each section have a uniform speed response even during acceleration and deceleration operations, even though the moment of inertia of the unwinding roll etc. changes. This allows for uniform speed acceleration/deceleration operation.

(Example) FIG. 1 shows an embodiment of the present invention.

Tissue paper fed out from unwinder rolls 1 and 2 in a tissue paper winding machine is wound up by a reel 5 passing through calenders 3 and 4.

A drive motor 6 that drives each section roll 1 to 5, respectively.
Δ~6E and allied electrodynamic g7A~7E are provided respectively, and each speed controller 8A~8E is connected to each speed detector 98~9E.
The speed control is performed based on the (, Y) of the comparators IOΔ to IOE and the speed reference signal.

It is necessary for each section from the unwinder to the reel to perform drowsy flit speed control not only during steady winding but also during acceleration and deceleration. Unwinder based on Soi No. 8 generator 11,
A predetermined speed difference between each section of the calendar can be set using setters 12A to 12D, and the speed can be set using speed controllers 8A to 8E to keep the speed difference between the reel and each section constant. Let control take place.

At this time, it is necessary to match the speed response of each section. However, since the unwinder 1゜2 is operated by feeding out the web, its moment of inertia gradually decreases, while the reel 5 gradually becomes thicker, so its moment of inertia increases6. Therefore, as the moment of inertia increases or decreases, A necessary condition for speed uniformity is to perform correction based on the speed.

To solve this problem, add the following equipment.

For example, in the case of the unwinder 1, the speed detector 9A counts the paper feed amount of the surface-driven unwinder with the counter 13A, and this counted value is combined with the paper thickness value preset with the setting device 14. From there, the roll diameter corresponding to the feed length is calculated using an equation in the calculator 15A. Here, D I+ is the initial diameter 2
Q represents the unwinding length, d represents the paper thickness, and π represents the circumference.

On the other hand, the moment of inertia value corresponding to each roll diameter is calculated or actually measured in advance, and the speed response speed ω of each section of the winder is determined in advance. The response gain K of each speed controller to obtain the function K of the roll diameter is
(D) is set using the function setter 16Δ.

In this way, τ is determined as the response gain function and the above. - the optimum gain for each row is determined by the response gain calculator 17A, which is input to the gain adjuster 18A to change the gain of the speed controller 8A.

〔Effect of the invention〕

Control′ above! By providing position A to the unwinder and reel, the tissue paper winding machine can maintain a stable uniform speed of 1i.
! The effect is that it becomes possible to provide an I-controlled device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a control device showing one embodiment of the present invention. 1.2... Unwinder roll 3.4... Calendar roll 5... Reel roll 6Δ~6F... Drive motor 7Δ~7F... Drive power supply 8Δ~8F... Speed controller 9A~9F ... Speed detector 10A-10F ... Comparator 11 ... Speed reference signal generator +2A to 12D ... Speed setter 13A to 13C ... Winding length count circuit 14 ... Paper thickness setting 15A to 15G...Roll diameter calculator 16A to 16G...Function setting device 17A to 1FC...Response gain calculator 18A to 18C
...Gain adjuster

Claims (1)

[Claims] A control device for a winding machine comprising the following components. (a) A drive motor provided for each drive roll in each section of the winder (b) A drive power source that drives this drive motor (c) A speed controller that controls the speed of the drive motor (d) A drive motor for each section of the winder A reel speed reference generator that generates the reference speed of the reel (E) Each speed setter that presets the speed difference between the reel and each section (F) A speed detector that detects this speed setting signal and the speed of each section (g) A winding length count circuit that counts the unwinding length from the speed detector signal (h) A paper thickness setting device and the winding length signal. A roll diameter calculator that calculates the roll diameter from (1) A function setter that determines the speed control gain according to the roll diameter to obtain a common speed response for the winding line (2) From this function setter and the roll diameter calculation value A response gain calculator (1) that obtains a response gain according to the roll diameter during operation.A gain adjuster that provides a gain signal to each of the speed controllers based on the signal from this response gain calculator.