JPH0780544A - Rewinder control device - Google Patents

Abstract

PURPOSE:To realize the correct and efficient operation to remove the looseness of the sheet by switching a second speed adjusting means to a first speed adjusting means by a switching means when the rotational speed of a winder becomes zero and the torque corresponding to the prescribed tension of the sheet is applied to a winder. CONSTITUTION:The deviation of the output speed Vfb and the speed limit Vo of a motor 12 is measured by a deviator 37, and a speed limiter 38 outputs the lock signal according to the obtained value to a rate of change limiter 20. The reference signal To' of the looseness removing torque provides the limit of change to the set signal To of the looseness removing torque by the rate of change limiter 20. The rate of change limiter 20 switches on/off an input/output matching coil 21 by the deviation between the set value To of the looseness removing torque and the reference signal To' of the looseness removing torque, and locks the reference signal To' of the looseness removing torque by the lock signal from a speed limiter 38. A looseness removing command generator 18 outputs the signal to switch on a looseness removing coil 19 when the input/output matching contact TE 36 is switched off by switching on/off the input/output matching coil 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rewinder control device for feeding a sheet material rewound from an unwinder to a winder and winding the sheet material into a coil.

[0002]

2. Description of the Related Art FIG. 4 is a side view showing a conventional rewinder device. A brake mechanism 3 is provided on the rotation shaft of the unwinder 2 around which the sheet material 1 is wound. The brake mechanism 3 is generally a mechanical brake such as a disc brake or a drum brake, or an electric brake that is connected to an electric motor to give a speed reference value of zero to a control device that drives the electric motor, but here, any control means is used. Including brake mechanism.

The sheet material 1 unwound from the unwinder 2 is sent to the winding coil 9 or 10 by passing between the free rolls 4 to 8. These winding coils 9 or 10 come into contact with the winder drum 11 and rotate when the winder drum 11 is driven. A rotary shaft of an electric motor 12 is connected to the winder drum 11. Therefore, the sheet material 1 is conveyed by the rotation of the wine drum 11, and is wound around the winding coil 9 or 10 in a coil shape.

By the way, when the sheet material is wound around the winding coil 9 or 10 by the winder drum 11 with respect to the brake mechanism 3 on the unwinder 2 side of the rewinder control device, the sheet material 1 is stretched with an arbitrary tension. Brake force control is being performed. On the other hand, the electric motor 12 on the winder drum 11 side is subjected to speed control by a predetermined speed reference signal V described later. FIG. 5 is a block diagram of an electric motor control device based on such speed control. Electric motor 12
Is provided with a speed detector 13, and the speed detector 13
The speed V _fb and the speed reference signal V corresponding to the speed fed back from are sent to the deviation device 14, and the deviation signal (speed deviation) is sent to the speed controller 15. The torque signal output from the speed controller 15 and the predetermined reference torque signal T _a are added by the adder 16 to obtain the current controller 1
Sent to 7. The output signal of the current controller 17 is the electric motor 12
Is supplied to the motor 12, the current is controlled so that the speed V _fb of the electric motor 12 matches the speed reference signal V. The reference torque signal T _a is the sum of the acceleration / deceleration torque of the winder drum 11 and the torque due to mechanical loss.

However, in the above device, when the winding work is started,
When the sheet material 1 has talumi (see the state of 1a in FIG. 2), the following problems occur. First, in order to mount the sheet material 1 on the rewinder device, the sheet material 1 is passed from the unwinder 2 to the winding coil 9 or 10 in contact with the winder drum 11, and the end of the sheet material 1 is inserted into the core of the winding coil 9 or 10. Glue to. At that time, since the tension load applied to the sheet material 1 becomes almost zero due to the tarmi of the sheet material 1, the torque of the winder drum 11 also becomes almost zero,
The reference torque signal T _a also becomes almost zero. When the electric motor 12 is driven from such a state, the speed controller 15 outputs a predetermined speed reference signal V that is a speed target value of the electric motor 12.
The output signal of the speed controller 15 is directly input to the current controller 17. Therefore, a speed close to the output upper limit value of the current controller 17 is given to the electric motor. The electric motor begins to rotate at this speed to some extent, and the load torque from the sheet material 1 is instantaneously applied when the tarmi of the sheet material 1 is removed. When the load torque exceeds the tension limit of the sheet material 1, the sheet material 1 may be ruptured, or even if it does not exceed the tension limit, wrinkles may occur, resulting in deterioration of quality. In addition, when such a situation is reached, the work of removing the tarmi of the sheet material 1 must be performed again, resulting in a decrease in work efficiency.

In order to avoid these situations, at the start of operation, the brake mechanism 3 of the unwinder 2 is loosened, the unwinder 2 is manually reversed, and the unwinder 2 is rotated.
By feeding the sheet material 1 between the winder drum 11 and the winder drum 11, the tarmi of the sheet material 1 is removed, or the brake control device 22 is braked by the manual operation article 23 of the unwinder 2 to move the winder drum 11 at an extremely low speed. The speed reference for driving the sheet material 1 is prepared by instantaneously driving the winder drum 11. However, these operations are highly inefficient because they require manual intervention, and are not efficient.

[0007] Therefore, an object of the present invention is to realize a winder control device which carries out an accurate and efficient operation of removing the salmon without manpower.

[0008]

In order to achieve the above object, the present invention provides a rewinder control device for controlling a rewinder for feeding a sheet material rewound from an unwinder to a winder and winding the sheet material into a coil. First speed adjusting means for adjusting the speed of the winder so as to be the speed reference of No. 1 and second speed for adjusting the speed of the winder so as to obtain the torque speed set value corresponding to the predetermined tension to be applied to the sheet material. The adjusting means, the detecting means for outputting the switching signal when the winder speed becomes zero and the predetermined tension is applied to the sheet material, and the second speed adjusting means until the switching signal is output from the detecting means. Let it work,
The present invention is characterized by including switching means for switching from the second speed adjusting means to the first speed adjusting means when the detecting means outputs the switching signal.

[0009]

The rewinder control device of the present invention performs the operation of removing the tarmi of the sheet material before the normal winding operation. For that purpose, the second speed adjusting means adjusts the rotation speed of the winder so that a torque corresponding to a predetermined tension to be applied to the sheet material is applied to the winder. When the rotation speed of the winder becomes zero and a torque corresponding to a predetermined tension is applied to the sheet material, the second speed adjusting means is switched to the first speed adjusting means by the switching means.

As a result, the talumi removing operation is performed without human intervention, and as a result, an appropriate sheet tension required at the start of the winding operation is set, and the rewinder control for promptly switching from the talumi collecting operation to the winding operation. A device can be provided.

[0011]

FIG. 1 is a block diagram showing an embodiment of the present invention. The electric motor 12 that drives the winder 11 is controlled by the output signal of the current controller 17. The current controller 17 receives the output signal of the adder 16 as an input. The adder 16 adds the output signal of the speed controller 15 and the torque correction signal T _a during the normal winding operation, and inputs the talumi removing torque reference signal T ₀ ′ during the talumi removing operation. The output speed V _fb of the electric motor 12 and the speed limit value V ₀ of the electric motor 12 are determined by the deviation 37
The deviation is taken by the speed limiter 38
Outputs a lock signal to the change rate limiter 20. The tally removal torque reference signal T ₀ ′ is obtained by applying a change limitation to the tally removal torque setting value T ₀ by the change rate limiter 20. The rate-of-change limiter 20 uses the Talumi removal torque set value T
_The input / output coincidence coil 21 is turned on / off by the deviation between ₀ and the duty removal torque reference signal T ₀ ′, and the duty removal torque reference signal T ₀ ′ is locked by the lock signal from the speed limiter 38. Further, by turning on / off the input / output matching coil 21, the input / output matching contact TE36 is turned on / off.
Turned off. When the input / output coincidence contact TE36 is turned off, the tally removal command generator 18 operates to remove the tally removal coil 1
The signal for activating 9 is output. As a result, the Talumi removing operation is started. Hereinafter, this operation will be described in detail.

FIG. 2 and FIG. 3 are side views of the rewinder device showing a state in which the operation command contact CR35 of the rewinder control device is input, the talumi removing operation is performed, and the normal winding operation is started. 6 is a graph showing changes in the output speed V _fb of the electric motor 12 and the talumi removal torque reference signal T ₀ ′, and on / off changes of the talumi removal execution coil 19 during that period. In FIG. 2, the state from the time when the operation command CR is input to the completion of the talumi removal work is represented by 1a, and the state after the talumi is removed to the normal winding operation is represented by 1b.

The operation until the normal winding operation is started after the operation command CR is input and the tally removal is carried out will be described below with reference to FIGS. 1, 2 and 3.

First, consider the initial state before the operation signal contact CR35 is turned on. At this time, the Talumi removal command generator 18 outputs the input signal, the output speed V _fb of the electric motor 12.
Is indefinite, the input / output coincidence point TE is indefinite, operation command contact CR3
5 is turned off, and the output signal of the talumi removal execution coil 19 is turned off (corresponding to the state (4) described later). Next, when the operation signal contact CR35 is turned on, a predetermined tally removal torque setting value T ₀ is input to the initialized change rate limiter 20, and the tally removal torque setting value T ₀ and the tally removal torque reference signal are immediately input. A deviation occurs from T ₀ ′, and as a result, the input / output matching coil 21 is turned off. At this time, the output speed V _fb is indefinite, the input / output coincidence point TE36 is turned off, and the operation command CR is turned on (state (1) described later).
(Corresponding to (5)), the talumi removal command generator 18 turns on the talumi removal execution coil 19 which is an output signal (corresponding to a state (5) described later). Then, the contact associated with the Talumi removal coil 19 is switched, the contact 30 is turned on, and accordingly, the maximum brake generation signal is transmitted to the brake braking device 22, and the unwinder 2 is subjected to maximum braking. Further, the contacts 31 and 33 are turned off, and the contacts 32 and
When 34 is turned on, the deviation between the speed limit value V ₀ and the output speed V _fb is obtained by the deviation device 37,
The deviation is judged by the speed judging device 38, and when the deviation is ≦ 0, the lock signal is inputted to the change rate limiting device 20. Further, the Talumi removal torque set value T ₀ is also input to the change rate limiter 20. Then, the talumi removal torque reference signal T ₀ ′ output from the change rate limiter 20 is input to the adder 16. The added signal is input to the current controller 17, and the electric signal is amplified to drive the electric motor 12.

Until the sheet material 1 is free from talumi, the rate-of-change limiter 20 gradually raises the talumi removal torque reference signal T ₀ ′ to the talumi removal torque set value T ₀ . In this process, if the output speed V _fb of the speed detector 13 is
Reaches the speed limit value V ₀ , the speed determiner 38
Outputs a lock signal to the speed limiter 20 to hold and stop the rate-of-change limiter 20 at the current speed, thereby limiting the speed increase of the electric motor 12. Then, when the output speed V _fb falls below the speed limit value V _0, the lock signal for holding and stopping the rate-of-change limiter 20 is released, and the rate-of-change limiter 20 operates the motor 12 based on the talumi removal torque reference signal T ₀ ′. Control the speed. That is, when V ₀ > V _fb , the speed determiner 38 does not output a lock signal, and the output of the change rate limiter 20 changes at a normal change rate. When V ₀ ≦ V _fb , the speed determiner 38 Outputs a lock signal, and the output of the change rate limiter 20 holds the output value at the time when the lock signal is input from the speed determiner 38.

Eventually, when the tarmi of the sheet material 1 is removed (corresponding to the state (2) described later), the sheet material 1 is pulled because the unrewinder coil 2 is stopped by the brake 3. At this time, the electric motor 12
When the tension is applied to the sheet material 1 by the sheet material 1, the rotation is stopped in the state where the talumi removing torque reference signal T ₀ ′ is applied, and the output speed V _fb becomes zero. This is detected by the speed detector 13 and its output is made zero. Thereafter, the rate-of-change limiter 20 determines that the talumi removal torque reference signal T ₀ ′ indicates the talumi removal torque set value T _0.
When it becomes equal to, the input / output coincidence contact TE36 is turned on via the input / output coincidence coil 21. The talumi removal command generator 18 turns off the talumi removal execution coil 19 (corresponding to a state (3) described later), and the talumi removal execution coil 1
The contacts associated with 9 are switched. When the contact 31 is turned off, the maximum brake generation signal is turned off and is not transmitted to the brake control device 22, and the brake is controlled by the braking force for normal operation. The input signal of the adder 16 is
Switching to the speed controller 15 and the output signal of the torque correction value T _a , the electric motor 12 operates under normal speed control. Also,
When the operation command contact CR35 is turned off, the rewander control device stops (corresponding to the state (4) described later).

The tally removal command generator 18 described above is used here.
The above operation is represented by a logical expression with the respective states of V _fb , TE and CR as its input signals and the state of the talumi removal execution coil 19 as its output signal. In that case, the following four states are possible. V _fb is indefinite, TE is off, CR is on, talumi removal execution coil 19 is on (1) V _fb ≠ 0, TE is indefinite, CR is on, talumi removal execution coil 19 is on (2) V _fb = 0, TE is on, CR is on, talumi removal execution coil 19 is off (3) V _fb is indefinite, TE is indefinite, CR is off, talumi removal execution coil 19 is off (4) Here, the state variable Is defined as follows.

[0018]

[Equation 1] The present invention is not limited to the above embodiment,
For example, as shown in FIG.
Although one winding coil 9 and 10 are provided, one winding coil or a plurality of winding coils may be provided for the plurality of drums 11. When a plurality of take-up coils are provided, the sheet material 1 may be cut and divided into a plurality of pieces in the lengthwise direction, and the take-up coils may be simultaneously wound up. And
The winder mechanism may also be of a type in which the electric motor is directly connected to the winding coil shaft. Further, each of the free rolls 4 to 8 may be a drive roll to which an electric motor is connected. Further, the control device of the present invention may be realized by either hardware, software, or an integration of both.

[0019]

According to the present invention, it is possible to realize a winder control device which performs accurate and efficient operation of removing the salmon without human intervention.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment according to the present invention.

FIG. 2 is a side view of a rewinder device for explaining an embodiment according to the present invention.

FIG. 3 is a graph showing changes in output speed and torque of an electric motor according to an embodiment of the present invention.

FIG. 4 is a side view showing the rewinder device.

FIG. 5 is a block diagram showing a known rewinder control device.

[Explanation of symbols]

 2 Unwinder 11 Winder 12 Electric motor 13 Speed detector 14 Adder 16, 37 Deviator 15 Speed controller 17 Current controller 18 Talumi removal command generator 19 Talumi removal coil 20 Change rate limiter 21 Input / output matching coil 22 Brake control Device 38 Speed determiner

Claims (1)

[Claims] 1. A rewinder control device for controlling a rewinder for feeding a sheet material rewound from an unwinder to a winder and winding the sheet material into a coil, wherein the speed of the winder is adjusted so that the speed of the winder becomes a predetermined speed reference. First speed adjusting means, second speed adjusting means for adjusting the speed of the winder to a speed set value corresponding to a predetermined tension to be applied to the sheet material, and the speed of the winder becomes zero and The detection means that outputs a switching signal when the predetermined tension is applied to the sheet material, and the second speed adjusting means are operated until the switching signal is output from the detection means. And a switching means for switching from the second speed adjusting means to the first speed adjusting means when a switching signal is output. Control device.