JP2003176080A - Rewinder for longitudinal article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rewinder for a longitudinal article capable of stably rewinding even super small-gage wire without manual operation by keeping constant the linear velocity and tension of the longitudinal article. <P>SOLUTION: The device comprises a wire feed part 2 for feeding a wire 1 which is in the form of a line or a belt, a wire feed part motor 3 for rotating the wire feed part 2, a winding part 5 for winding the wire 1, a winding part motor 6 for rotating the winding part 5, a tension detecting device 8 for detecting the tension applied to the wire 1, a speed detecting device 9 for detecting the speed of the wire 1, a wire feed part inverter 4 for preparing an operation amount to keep the tension of the wire 1 to a reference value of tension on the basis of the difference between the detected tension value detected by the tension detecting device 5 and the reference value of tension and for supplying the operation amount to the wire feed part motor 3, and a winding part inverter 7 for preparing an operation amount to keep the speed of the wire 1 to a reference value of speed on the basis of the difference between the detected speed detected by the speed detecting device 9 and the reference value of speed and for supplying the operation amount to the winding part motor 6. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rewinding device for a long object such as a wire or a strip-shaped object.

[0002]

2. Description of the Related Art A device for rewinding a longitudinal object is a device for rewinding a longitudinal object such as a wire from a bobbin (hereinafter referred to as a wire feeding section) that is fully wound to an empty bobbin (hereinafter referred to as a winding section). As a conventional device for rewinding a longitudinal object of this type, for example, there is one described in Japanese Patent Publication No. 7-12884. This rewinding device (conventional example 1) includes a wire supply side rotating body (for example, a capstan), a wire winding side rotating body (winding unit), a motor for driving the wire supply side rotating body, and a wire winding side. A motor for driving the side rotating body and a dancer provided between the wire feed portion and the winding portion and having a tension adjusting and tension detecting function are provided. According to this rewinding device, the wire feeding section is not forcibly driven, only the winding section is rotated by the motor, and the dancer has a simple structure. Can be rewound.

Further, in the rewinding device (conventional example 2) in which the wire rewinding device is further equipped with a driving device such as a wire replenishing part motor in addition to the above-described rewinding device, a tension detecting signal from the dancer and a reference position of the dancer are used. It is also possible to create an error signal or a deviation signal with respect to the reference value indicating, and to correct the speed command by this deviation signal to control the dancer position constant. Further, in the case of the rewinding device (conventional example 3) in which the dancer position is not controlled to be constant, the number of revolutions of the wire feeding portion or the winding portion is manually changed and adjusted with the passage of time.

[0004]

However, in the rewinding devices of the conventional example 1 and the conventional example 2 described above, each of the wire feeding portion and the winding portion is driven by a motor at a constant rotational speed. In the case of the feeder section,
As shown in FIG. 7A, the linear velocity of the longitudinal object becomes slow.
This is because the winding diameter of the longitudinal object in the feeder portion becomes smaller with the lapse of time, so that the dose of the longitudinal object per unit time becomes smaller. Further, in the winding section, the linear velocity of the longitudinal object increases with time, as shown in FIG. 7 (b). This is because the winding diameter of the longitudinal object increases with time in the winding section, and the amount of winding of the longitudinal object per unit time increases.

Therefore, at the start of rewinding, even if the rotation speed ratios of the wire feeding portion and the winding portion are accurately adjusted,
The linear velocities of the dancers gradually became out of sync with each other, and the dancers moved largely off center.
Therefore, the wire will eventually be disconnected.

As described above, in the rewinding devices of Conventional Example 1 and Conventional Example 2, the linear velocity of the longitudinal object changes with the passage of time. Relatively thick wire (about 1 mm or more)
Alternatively, in winding a wire having a relatively large tension (about 100 g or more), the change in linear velocity may not be a problem. However, in the case of winding ultra-fine wire or the like, a slight change in tension or a change in speed may cause uneven winding or disconnection.

Further, in the rewinding device of Conventional Example 3, the number of rotations of the wire feeder or the take-up portion was manually changed, which made the operation difficult.

The present invention is a rewinding device for a long object, which is capable of stably rewinding an ultrafine wire or the like without manually operating by keeping the linear velocity and the tension of the long object constant. To provide.

[0009]

The present invention adopts the following means in order to solve the above problems and achieve the above objects.
According to another aspect of the present invention, there is provided a longitudinal object rewinding device for winding a linear or strip-shaped longitudinal object on a supply side, a supply motor for rotating the supply side rotational body, and the longitudinal object. A winding side rotating body, a winding motor for rotating the winding rotating body, a tension detecting means for detecting a tension applied to the longitudinal object, a speed detecting means for detecting a speed of the longitudinal object, One of the supply motor and the winding motor by creating an operation amount for maintaining the tension of the longitudinal object at the tension reference value based on the difference between the tension detection value detected by the tension detection means and the tension reference value. The first control means for supplying the motor to the motor, and an operation amount for holding the speed of the longitudinal object at the speed reference value based on the difference between the speed detection value detected by the speed detection means and the speed reference value. Create the above And having a second control means for supplying the feed motor and the other motor of the winding motor.

According to the invention of claim 1, the first control means holds the tension of the longitudinal object at the tension reference value based on the difference between the tension detection value detected by the tension detection means and the tension reference value. An operation amount is created and supplied to one of the motors to perform constant tension control. Further, the second control means creates an operation amount for keeping the speed of the longitudinal object at the speed reference value based on the difference between the speed detection value detected by the speed detection means and the speed reference value, and the other motor is controlled by the second control means. It is supplied to control the constant velocity of the longitudinal object. That is, since the speed of the longitudinal object is kept constant and the tension is controlled to be constant, even if there is a slight change in the tension of the longitudinal object or a change in the linear velocity, it is possible to prevent winding unevenness or disconnection of the longitudinal object. It is possible to stably rewind even ultra-fine wires without performing any operation.

According to a second aspect of the present invention, in the rewinding device for a longitudinal object according to the first aspect, the tension detecting means is disposed on the one motor side, and the speed detecting means is on the other motor side. The first control means inputs the speed detection value detected by the speed detection means, adds or subtracts the operation amount to the input speed detection value, and obtains the operation amount by the one side. It is characterized by supplying to the motor.

According to the second aspect of the present invention, the first control means adds or subtracts the operation amount to or from the speed detection value input from the speed detection means arranged on the other motor side to obtain the operation amount obtained. Is supplied to one of the motors. That is, since the operation amount corresponding to the speed detection value out of the obtained operation amounts is supplied to the one motor, the one motor is driven at the rotation speed linked with the speed detection value. For this reason, the speed of the longitudinal object is constant on each of the supply side and the winding side, and it is possible to prevent uneven winding even during rewinding during steady operation.

According to a third aspect of the present invention, in the device for rewinding a longitudinal object according to the second aspect, each of the first control means and the second control means has a function of rewinding the longitudinal object. The operation amount is changed so that the speed of the longitudinal object is constant.

According to the third aspect of the present invention, each of the first control means and the second control means controls the operation amount so that the speed of the longitudinal object becomes constant with the elapse of the rewinding time of the longitudinal object. Since the speed is changed, the speed of the longitudinal object is constant on each of the supply side and the winding side, and it is possible to prevent uneven winding, disconnection, or the like of the longitudinal object.

The invention of claim 4 is the invention of claims 1 to 3.
In the device for rewinding a longitudinal object according to any one of claims 1 to 5, there is a tension reference value input means for inputting the tension reference value, and the tension reference value input means, with the passage of time for rewinding the longitudinal object, The tension reference value is gradually changed so that the tension gradually increases.

According to the invention of claim 4, since the tension is controlled so as to gradually increase, rewinding with less winding unevenness can be performed.

The invention of claim 5 relates to claims 1 to 4.
In the device for rewinding a longitudinal object according to any one of claims 1 to 3, the tension detecting means applies tension to the longitudinal object by contacting the longitudinal object between the supply-side rotating body and the winding-side rotating body. It has a pressurizing body to be applied, a guide means for guiding the pressurizing body to be movable in the vertical direction, and a sensor for outputting a tension detection signal detected based on the position of the pressurizing body in the vertical direction. Is characterized by.

According to the fifth aspect of the invention, the tension adjustment and the tension detection can be performed with a simple structure using the pressurizing body, the guide means and the sensor.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a device for rewinding a longitudinal object according to the present invention will be described below in detail with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing a device for rewinding a longitudinal object according to a first embodiment. The rewinding device for a longitudinal object shown in FIG. 1 includes a wire 1 as a linear object or a strip-shaped longitudinal object, a wire supplying section 2 as a supply side rotating body for supplying the wire 1, and a wire supplying section 2 Of the wire feed portion motor 3 as a supply motor for rotating the wire, a wire feed portion inverter 4 as first control means for controlling the rotation of the wire feed portion motor 3, and a winding side rotation for winding the wire 1. A winding section 5 as a body, a winding section motor 6 for rotating the winding section 5, and a winding section inverter 7 as second control means for controlling the rotation of the winding section motor 6. , A tension detecting device 8 as a tension detecting means which is arranged on the side of the wire feeding portion 2 and detects a tension applied to the wire 1 when the wire 1 is wound, and a linear velocity of the wire 1 which is arranged on the winding portion 5 side. As a speed detection means to detect A speed detector 9 is configured by a plurality of rollers 21 to 25 disposed in the path of the wire 1.

The wire 1 is an ultrafine wire having a diameter of 0.05 mm, for example. The wire feed unit 2 is configured to be rotatable by attaching the rotary shaft 3a of the wire feed unit motor 3 to the hole 2a.
At the start of rewinding, the wire 1 is in a fully wound state, and the wire 1 is sent out by being driven by the wire feeder motor 3 using the wire feeder inverter 4 as a power source. The feeder motor 3 is an AC motor such as an induction motor.

The tension detecting device 8 (dancer) is provided in the wire feeding section 2.
It is installed between the winding section 5 and the winding section 5 and between the roller 22 and the roller 23 (on the side of the wire feeding section), detects the absorption of the tension of the wire 1 and the tension (corresponding to the position of the dancer), and An analog voltage signal of 0 to 10 V is output to the line feeding section inverter 4 as a position signal.

The tension detecting device 8 has a cylindrical pressure body 8a as a dancer which is in contact with the wire 1, a tension sensor 8b for converting the vertical position of the pressure body 8a into an electric signal, and a guide. Consisting of a means 8c and a tension spring 8d,
It is arranged between the roller 22 and the roller 23. The wire 1 is in contact with the upper side of the pressure body 8a. Since the shaft of the pressurizing body 8a is inserted into the slit 8f extending in the vertical direction of the support plate 8e as the guide means 8c, the pressurizing body 8a can move up and down within the range of the slit 8f. In order to apply tension to the wire 1, the pressing body 8a is always biased upward by the tension spring 8d. When the tension of the wire 1 becomes strong, the dancer, that is, the pressing body 8a moves downward, and when the tension becomes weaker, the pressing body 8a moves upward. In this specific example, the strength of the spring 8d is adjusted so that the pressing body 8a is positioned in the middle of the slit 8f when the optimum tension is applied.

The tension sensor 8b is also called a position sensor interlocking with the pressurizing body 8a, and comprises, for example, a variable resistor 25, a movable contact 26 and a low pass filter 27 as shown in FIG. The voltage Vt proportional to the position is output as the tension detection voltage. The variable resistor 25 has a power supply terminal 2
8 is connected to the ground, the movable contact 26 is displaced in proportion to the position of the pressurizing body 8a, and outputs a position detection signal with a short cycle of vibration, that is, a tension detection signal Vp. The low pass filter 27 outputs the output signal Vp of the variable resistor 25.
Then, the tension detection signal Vt which is smoothed by removing the high frequency component is output. In this specific example, the tension detection signal Vt has a value inversely proportional to the tension of the wire 1,
The tension detection value Vt decreases as the tension increases. The dancer reference value command input device 10 sets and inputs the dancer reference value indicating the position of the dancer, and outputs the input dancer reference value to the line feeding section inverter 4.

The line feed section inverter 4 is connected to the line feed section motor 3, and the difference between the dancer reference value preset by the dancer reference value command input device 10 and the value of the dancer position signal from the tension detecting device 8, that is, PI (proportional integration) control is performed by the deviation signal to determine the output frequency of the sine wave AC voltage to be supplied to the feeder motor 3 so that the dancer position always becomes the dancer reference value (dancer position constant control). When the frequency is changed, the voltage changes according to this frequency change.

The winding portion 5 has a cylindrical winding portion with a radius R, and the rotary shaft 6 of the winding portion motor 6 is inserted into the hole 5a.
a is attached and is configured to be rotatable, the wire 1 is in an empty state at the start of rewinding, and the wire 1 is wound by being driven by a winding motor 6 using a winding inverter 7 as a power source. The winding unit motor 6 is, for example, an AC motor such as an induction motor, and is connected to the winding unit inverter 7. The winding section inverter 7 controls the frequency of the sinusoidal AC voltage supplied to the winding section motor 6 to control the rotation speed of the winding section motor 6.

The linear velocity detecting device 9 detects the linear velocity of the wire 1 and is provided between the tension detecting device 8 and the winding portion 5 and presses the wire 1 together with the roller 24. The linear velocity detecting device 9 is, for example, a pulse generator encoder (hereinafter, abbreviated as PG encoder), and the PG encoder rotates along with the movement of the wire 1 and on the outer circumference as shown in FIG. A cylindrical body 9a having holes 9b at equal intervals, a light emitting portion 9c that emits light toward the hole 9b of the cylindrical body 9a, a light receiving portion 9d that receives light that has passed through the hole 9b, and a light receiving portion And a pulse generator 9e for generating a pulse signal by the optical signal from 9d. That is, the number of pulses of the pulse signal is proportional to the rotation speed of the cylindrical body 9a, and the rotation speed of the cylindrical body 9a is
It is proportional to the linear velocity of the wire 1. Therefore, the linear velocity of the wire 1 can be detected by the number of pulses of the pulse signal. The pulse signal detected by the linear velocity detection device 9 is output to the winding section inverter 7 as a linear velocity detection signal.

The velocity command input device 11 presets and inputs the linear velocity command value of the wire 1, and outputs the input linear velocity command value to the winding section inverter 7.

The winding section inverter 7 is connected to the winding section motor 6 and corresponds to a linear velocity command value preset by the velocity command input device 11 and a linear velocity detection signal from the linear velocity detecting device 9, for example, 0. An error from an analog converted value of -10 V, that is, a deviation signal is PI (proportional integration) controlled, and is supplied to the winding unit motor 6 so that the linear velocity of the wire 1 is always the linear velocity command value (constant velocity control). When the output frequency of the sine wave AC voltage is determined and the frequency is changed, the voltage changes according to this frequency change.

Next, the detailed configurations of each of the feed line inverter 4 and the winding inverter 7 will be described with reference to FIG.

As shown in FIG. 2, the winding section inverter 7 has an error amplifier 41 and a proportional-integral circuit 42 connected to the error amplifier 41. The non-inverting input terminal of the error amplifier 41 is connected to the linear velocity detecting device 9, and the inverting input terminal is connected to the velocity command input device 11. Therefore, the error amplifier 41 is connected to the linear velocity detecting device 9
An error signal ΔVe2 = Vv−Vr2 between the detected linear velocity value Vv and the velocity command value Vr2 is generated. The proportional-plus-integrator circuit (PI circuit) 42 has a predetermined time constant, and performs proportional-plus-integral processing on the error signal ΔVe2 output from the error amplifier 41 to output the manipulated variable fd to the winding-up motor 6. The proportional-plus-integrator circuit 42 outputs a frequency value proportional to the proportional-plus-integral value of the error signal ΔVe2 as the manipulated variable fd. Therefore,
The manipulated variable fd responds quickly to changes in the linear velocity detection value.

As shown in FIG. 2, the feed line inverter 4 is connected to an error amplifier 31, a proportional integrator circuit 32 connected to the error amplifier 31, the proportional integrator circuit 32, and the linear velocity detecting device 9. And an arithmetic unit 33. The non-inverting input terminal of the error amplifier 31 is connected to the tension sensor 8b, and the inverting input terminal is connected to the dancer reference value command input device 10. Therefore, the error amplifier 3
1 generates an error signal ΔVe1 = Vt−Vr1 between the detected tension value Vt from the tension sensor 8b and the dancer reference value Vr1. The proportional-plus-integrator circuit (PI circuit) 32 has a predetermined time constant and has an error signal ΔVe which is the output of the error amplifier 31.
1 is proportional-integral-processed and the manipulated variable fa is output. The proportional-plus-integrator circuit 32 outputs a frequency value proportional to the proportional-plus-integral value of the error signal ΔVe1 as the manipulated variable fa.

The calculator 33 adds up the manipulated variable fa, which is the frequency value from the proportional-plus-integral circuit 32, and the manipulated variable fb, which is a frequency value proportional to the linear velocity detection signal from the linear velocity detection device 9, and is obtained. The manipulated variable fc is output to the feeder motor 3. The manipulated variable fb is an actual linear velocity, and is given as a velocity command value for the line feeding section inverter 4.

When the detected tension value Vt is higher than the dancer reference value Vr1, the manipulated variable fa becomes positive, the manipulated variable fc output from the calculator 33 becomes larger than the manipulated variable fb, and the feeder motor 3 Is accelerated. On the other hand, when the detected tension value Vt is lower than the dancer reference value Vr1, the manipulated variable fa becomes negative, and the manipulated variable f output from the computing unit 33.
c becomes smaller than the operation amount fb, and the wire feed section motor 3 is decelerated.

Next, the operation of the longitudinal object rewinding device of the first embodiment having the above structure will be described with reference to FIG. FIG. 4 is a diagram showing changes in the speed command value, the speed detection value, the rotation speed of the wire feeding unit motor, and the rotation speed of the winding motor from the start to the end of winding the wire.

First, the winding section inverter 7 operates the operation amount fd with a frequency value proportional to the proportional integral value of the error signal between the speed command value from the speed command input device 11 and the speed detection value from the linear speed detection device 9. Is supplied to the winding portion motor 6 so that the linear velocity of the wire 1 always becomes the linear velocity command value. That is, the speed of the wire 1 is controlled to be constant.

Therefore, as shown in FIG. 4, the speed command value F1 gradually increases from the time t0 to the time t1 (rewinding start time), and the constant value F from the time t1 to the time t2.
11 is held and gradually decreases from time t2 to time 3 (rewinding end time), the speed detection value F
2 also gradually rises from time t0 to time t1,
The constant value F21 is held from 1 to time t2, and gradually decreases from time t2 to time 3.

At this time, the rotation speed F4 of the winding portion motor 6 rises to a predetermined speed F41 at time t1 in proportion to the rotation speed F3 of the wire feeding portion motor 3, and then reaches the predetermined speed F41.
Therefore, the wire diameter gradually decreases with an increase in the winding diameter of the wire 1 with respect to the winding portion 5, and reaches the predetermined speed F42 at time t2.
In addition, when the rotation speed of the winding unit 5 is set to a constant value from the time 1 to the time 2, the linear speed of the wire 1 on the winding unit side changes with the passage of the rewinding elapsed time as shown in FIG. 7B. Gradually rises. Therefore, in the embodiment, the rotation speed F4 of the winding portion motor 6 is gradually decreased from the time t1 to the time t2 so that the linear speed of the wire 1 becomes the constant value F21 from the time t1 to the time t2. To do so. When the winding of the wire 1 is completed at time t2, the rotation speed F of the winding unit motor 6 is
4 is gradually reduced from the predetermined speed F42.

On the other hand, on the feeder side, the inverter 4
Is a manipulated variable fa that is a frequency value proportional to the proportional integral value of the error signal between the dancer reference value from the dancer reference value command input device 10 and the value of the dancer position signal from the tension detecting device 8.
Is supplied to the feeder motor 3 so that the dancer position always becomes the dancer reference value. That is, the dancer position is controlled to be constant.

Further, the computing unit 33 of the line feed section inverter 4
Is the manipulated variable fa, which is the frequency value from the proportional-plus-integral circuit 32.
And the manipulated variable fb, which is a frequency value proportional to the linear velocity detection signal from the linear velocity detection device 9, are added to obtain the manipulated variable f.
c is output to the feeder motor 3. That is, the line feeding section inverter 4 receives an error signal between the dancer reference value from the dancer reference value command input device 10 and the dancer position signal from the tension detecting device 8, and a linear velocity detecting signal from the linear velocity detecting device 9. The output frequency of the sine wave AC voltage is determined based on the above, and when the frequency is changed, the voltage changes according to this frequency change. Therefore, the manipulated variable fc quickly responds to changes in the tension detection value Vt and changes in the linear velocity detection value Vv.

At this time, the rotation speed F3 of the wire feed motor 3
Rises to a predetermined speed F31 at time t1,
From 1, the temperature gradually increases as the winding diameter of the wire 1 with respect to the wire feed portion 2 decreases, and reaches a predetermined speed F32 at time t2. Note that, from time 1 to time 2, when the rotation speed of the wire feeder 2 is set to a constant value, the linear speed of the wire 1 on the wire feeder side is as shown in FIG.
As shown in (a), it gradually decreases as the rewinding elapsed time elapses. Therefore, in the embodiment, from time t1 to time t2, the rotation speed F3 of the wire feeding motor 3 is changed from time t1 to time t2 so that the linear speed of the wire 1 on the wire feeding portion side becomes a constant value. Try to raise gradually.

When the winding of the wire 1 is completed at the time t2, the rotation speed F3 of the wire feed motor 3 is gradually decreased from the predetermined speed F32.

As described above, according to the device for rewinding a long object of the first embodiment, the dancer position is constantly controlled on the feeder side, and the wire 1 speed is controlled on the winding part side. When winding a superfine wire or the like, even if there is a slight change in the tension of the wire 1 or a change in the linear velocity, it is possible to prevent winding unevenness or disconnection of the wire 1, and to stably wind the ultrafine wire or the like. Can be changed.

Further, the line feeding section inverter 4 is made to interlock with the winding section inverter 7. That is, the line feeding section inverter 4 inputs the actual linear velocity detection value from the winding section inverter 7 as a linear velocity command value, and drives the line feeding section motor 3 at a rotation speed linked to the inputted linear velocity command value. .
For this reason, on each of the wire feeding section side and the winding section side,
Since the linear velocity of the wire 1 becomes constant, it is possible to prevent winding irregularity even during rewinding during steady operation.

Further, at the start of rewinding and at the end of rewinding, the speed command value on the winding section side gradually rises and falls, so that the actual linear speed also gently rises and falls according to this speed command value. Then, the actual linear velocity is used as a velocity command value, and the linear velocity is gradually increased / decreased in association with the winding side on the wire feeding portion side. Therefore, even if there is a transient change in the number of revolutions of the wire feeding portion 2 and the winding portion 5 at the start of winding or at the end of winding, the wire 1 such as a superfine wire
It is possible to prevent disconnection.

Further, the constant tension control and the constant linear velocity control are performed, so that the rewinding can be stably performed even with an ultrafine wire, so that a manual operation becomes unnecessary.

As a method of interlocking the winding section 5 and the wire feeding section 2, (a) a method of converting the analog conversion value of the frequency command value of the wire feeding section inverter 4 into the frequency command value of the winding section inverter 7. . (B) There is a method in which the analog conversion value of the frequency command value of the winding section inverter 7 is used as the frequency command value of the line feeding section inverter 4.

In both methods (a) and (b), the output frequency of the main inverter is used as the frequency command value of the sub-inverter, and constant linear velocity and constant dancer position are controlled. Then, the output frequency changes as the rewinding time elapses. This change in frequency is, in other words, a change in the rotation speed of the wire feed portion 2 and the winding portion 5. As shown in FIG. 4, in the wire feed portion 2 (corresponding to the rotation speed F3 of the wire feed portion motor), The rotation speed gradually increases as the rewinding time from the time t1 to the time t2 elapses, and the winding unit 5 (corresponding to the rotation speed F4 of the winding unit motor) changes the rewinding time from the time t1 to the time t2. The rotation speed will gradually decrease with the passage of time. However, since the linear velocity and the tension are controlled, a constant value is maintained.

As described above, it is difficult to interlock the line feed section inverter 4 and the take-up section inverter 7 with the frequency command of the inverter in which the number of revolutions changes in the opposite directions as the rewinding time elapses. Therefore, in the embodiment, the wire feed section inverter 4 is interlocked with the winding section inverter 7 to perform stable rewinding by using the linear velocity detection value which is always controlled at a constant value.

Further, the dancer reference value command input device 10
Is the winding start time t of the wire 1 as shown in FIG.
The dancer reference value may be gradually decreased from 1 toward the rewind end time t2. In this way, the operation amount fc for gradually reducing the tension of the wire 1 in FIG. 1 is generated, and the tension of the wire 1 decreases in proportion to the dancer reference value. As the rewind time elapses, wire 1
By reducing the tension of No. 1, it is possible to perform rewinding with less uneven winding.

(Second Embodiment) FIG. 5 is a block diagram showing a longitudinal rewinding device according to a second embodiment. The longitudinal object rewinding device according to the second embodiment is different from the longitudinal object rewinding device according to the first embodiment in that the linear velocity detecting device 9 and the speed command input device 11 are arranged on the wire feeding portion side. Then, the tension detecting device 8 and the dancer reference value command input device 10 are arranged on the winding section side, and the wire feeding section inverter 4a is provided.
The linear velocity command signal is output from the winding unit inverter 7a. The other configuration shown in FIG. 5 is the same as that shown in the device for rewinding a longitudinal object according to the first embodiment shown in FIG. To do.

The linear velocity detecting device 9 is arranged between the roller 21 and the roller 23, and is provided by pressing the wire 1 together with the roller 22. The pulse signal detected by the linear velocity detecting device 9 is output to the line feed section inverter 4a as a linear velocity detection signal. The speed command input device 11 is the wire 1
The linear velocity command value of is input in advance, and the input linear velocity command value is output to the line feeding section inverter 4a.

The power supply line inverter 4a is connected to the power supply line motor 3
Connected to a linear velocity command value from the velocity command input device 11 and an analog converted value of, for example, 0 to 10 V corresponding to the linear velocity detection signal from the linear velocity detection device 9, that is, an error signal, a deviation signal, is PI (proportional integral). When the output frequency of the sine wave AC voltage supplied to the wire feed unit motor 3 is controlled and the frequency is changed so that the linear velocity of the wire 1 is always the linear velocity command value (constant velocity control), The voltage changes according to the frequency change.

The tension detecting device 8 includes rollers 24 and 2
It is installed between the coil 1 and the wire 5, and detects the tension of the wire 1 and detects the tension, and outputs an analog voltage signal of 0 to 10 V as a dancer position signal to the winding section inverter 7a.
The dancer reference value command input device 10 sets and inputs a dancer reference value indicating the position of the dancer, and outputs the input dancer reference value to the winding section inverter 7a.

The take-up inverter 7a is connected to the take-up motor 6 and PI is generated by an error, that is, a deviation signal between the dancer reference value from the dancer reference value command input device 10 and the value of the dancer position signal from the tension detecting device 8. (Proportional-integral) control is performed to determine the output frequency of the sine wave AC voltage supplied to the winding unit motor 6 and to change the frequency so that the dancer position always becomes the dancer reference value (dancer position constant control). And the voltage is changed according to this frequency change.

Next, the detailed construction of each of the line feed portion inverter 4a and the winding inverter 7a will be described with reference to FIG.

As shown in FIG. 6, the feed line inverter 4a comprises an error amplifier 41 and a proportional-integral circuit 42 connected to the error amplifier 41. The non-inverting input terminal of the error amplifier 41 is connected to the linear velocity detecting device 9, and the inverting input terminal is connected to the velocity command input device 11. Therefore, the error amplifier 41 generates an error signal ΔVe2 = Vv−Vr2 between the linear velocity detection value Vv from the linear velocity detection device 9 and the velocity command value Vr2. Proportional integrator circuit (P
I circuit) 42 has a predetermined time constant, and the error amplifier 41
The output of the error signal ΔVe2 is proportional-integral-processed, and the manipulated variable fd is output to the wire feed unit motor 3. The proportional-plus-integrator circuit 42 outputs a frequency value proportional to the proportional-plus-integral value of the error signal ΔVe2 as the manipulated variable fd. Therefore, the manipulated variable f
d responds quickly to changes in linear velocity detection.

As shown in FIG. 6, the winding section inverter 7a is connected to the error amplifier 31, the proportional integration circuit 32 connected to the error amplifier 31, the proportional integration circuit 32 and the linear velocity detecting device 9. And an arithmetic unit 33. The non-inverting input terminal of the error amplifier 31 is connected to the tension sensor 8b, and the inverting input terminal is connected to the dancer reference value command input device 10. Therefore, the error amplifier 31 causes the error signal ΔVe1 = Vt−Vr1 between the tension detection value Vt from the tension sensor 8b and the dancer reference value Vr1.
To occur. The proportional-plus-integrator circuit (PI circuit) 32 has a predetermined time constant and has an error signal Δ output from the error amplifier 31.
Ve1 is proportional-integral-processed and the manipulated variable fa is output. The proportional-plus-integrator circuit 32 outputs a frequency value proportional to the proportional-plus-integral value of the error signal ΔVe1 as the manipulated variable fa. The calculator 33 adds the operation amount fa, which is the frequency value from the proportional-plus-integral circuit 32, and the operation amount fb, which is the frequency value proportional to the linear velocity detection signal from the linear velocity detection device 9, and obtains the operation amount obtained. fc is output to the winding unit motor 6.

Next, the operation of the longitudinal object rewinding device of the second embodiment having such a configuration will be described with reference to FIG.

First, the line feed section inverter 4a operates the operation amount fd with a frequency value proportional to the proportional integral value of the error signal between the speed command value from the speed command input device 11 and the speed detection value from the linear speed detection device 9. Is supplied to the line feed motor 3 so that the linear velocity of the wire 1 always becomes the linear velocity command value.
That is, the speed of the wire 1 is controlled to be constant.

Therefore, as shown in FIG. 4, the speed detection value F2 also changes according to the change in the speed command value F1. At this time, the rotation speed F3 of the wire feeder motor 3 rises to a predetermined speed F31 at time t1, and from time t1 the wire feeder unit 2 starts rotating.
The wire diameter gradually increases as the winding diameter of the wire 1 decreases, and reaches a predetermined speed F32 at time t2. In addition, when the rotation speed of the wire feeder 2 is set to a constant value from time 1 to time 2,
As shown in FIG. 7A, the linear velocity of the wire 1 on the side of the wire feeding portion gradually decreases as the rewinding elapsed time elapses. Therefore, in the embodiment, the rotation speed F3 of the wire feed unit motor 3 is gradually increased from the time t1 to the time t2 so that the linear speed of the wire 1 becomes a constant value F21 from the time t1 to the time t2. To do so. And time t
When the winding of the wire 1 is completed at 2, the rotation speed F3 of the wire feeding unit motor 3 is gradually decreased from the predetermined speed F32.

On the other hand, on the winding section side, the winding section inverter 7a uses the proportional integral value of the error signal between the dancer reference value from the dancer reference value command input device 10 and the value of the dancer position signal from the tension detecting device 8. A frequency value proportional to is supplied to the winding unit motor 6 as the manipulated variable fa so that the dancer position always becomes the dancer reference value. That is, the dancer position is controlled to be constant.

Further, the calculator 33 of the winding section inverter 7a has an operation amount fa which is a frequency value from the proportional integration circuit 32 and an operation amount which is a frequency value proportional to the linear velocity detection signal from the linear velocity detection device 9. fb is added, and the obtained manipulated variable fc is output to the winding unit motor 6. Therefore, the operation amount fc is the change in the tension detection value Vt and the linear velocity detection value Vv.
Respond quickly to changes in.

At this time, the rotation speed F4 of the winding portion motor 6 rises up to a predetermined speed F41 at time t1, and gradually decreases from time t1 as the winding diameter of the wire 1 with respect to the winding portion 5 increases. The predetermined speed F42 is reached at time t2. In addition, from the time 1 to the time 2, the winding unit 5
When the rotation speed of the wire is set to a constant value, the wire 1 on the winding side
As shown in FIG. 7B, the linear velocity of No. 2 gradually increases as the rewinding elapsed time elapses. Therefore, in the embodiment, from time t1 to time t2, the rotation speed F4 of the winding portion motor 6 is changed from time t1 to time t2 so that the linear speed of the wire 1 on the winding side becomes a constant value.
Try to lower it gradually. Then, when the winding of the wire 1 is finished at the time t2, the rotation speed F4 of the winding portion motor 6 is gradually decreased from the predetermined speed F42.

As described above, according to the device for rewinding a long object of the second embodiment, the speed of the wire 1 is controlled to be constant on the feeder side and the dancer position is controlled to be controlled on the winding section side. The same effect as the effect of the longitudinal object rewinding device of the first exemplary embodiment can be obtained.

(Modification) The present invention is not limited to the rewinding device for a longitudinal object according to the above-described embodiment, and the following modifications are possible, for example.

(1) A proportional circuit or an integrating circuit may be provided instead of the proportional integrating circuit.

(2) The linear velocity detection device 9 outputs a pulse signal as a linear velocity detection signal to the winding section inverter 7, but instead of this, for example, an analog voltage signal may be output.

(3) The speed command input device 11 outputs an analog voltage signal as a linear speed command value to the winding section inverter 7. Instead of this, for example, a current value or a communication command from the host computer is output. You may.

(4) The actual speed command signal for interlocking the line feeding section inverter and the winding section inverter can be omitted under special conditions such as ultra-low speed and ultrafine wire. In this case, the frequency command value is externally input to the inverter.

(5) The pressing body 8a is replaced with the wire 1
2, the tension detecting device 8 can be deformed so that the tension detection value Vt of FIG. 2 increases when the tension of the wire 1 is high. In this case, the calculator 33 shown in FIGS. 2 and 6 is used as a subtractor for obtaining fc = fb-fa.

[0072]

According to the first aspect of the present invention, since the velocity of the longitudinal object is kept constant and the tension is controlled to be constant, even if there is a slight change in the tension or linear velocity of the longitudinal object, It is possible to prevent winding unevenness and wire breakage, and it is possible to stably rewind even ultra-fine wires without performing manual operation.

According to the second aspect of the present invention, the first control means adds or subtracts the operation amount to the speed detection value input from the speed detection means arranged on the other motor side to obtain the operation amount obtained. Is supplied to one of the motors, the speed of the longitudinal object is constant on each of the supply side and the winding side, and it is possible to prevent winding unevenness even during rewinding during steady state.

According to the third aspect of the present invention, each of the first control means and the second control means controls the manipulated variable so that the speed of the longitudinal object becomes constant as the rewinding time of the longitudinal object elapses. Since the speed is changed, the speed of the longitudinal object is constant on each of the supply side and the winding side, and it is possible to prevent uneven winding, disconnection, or the like of the longitudinal object.

According to the invention of claim 4, since the tension is controlled so as to gradually increase, rewinding with less winding unevenness can be performed.

According to the fifth aspect of the invention, the tension adjustment and the tension detection can be performed with a simple structure using the pressurizing body, the guide means and the sensor.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a device for rewinding a longitudinal object according to a first embodiment.

FIG. 2 is a detailed configuration diagram of a line feeding part inverter and a winding part inverter provided in the longitudinal object rewinding device according to the first embodiment.

FIG. 3 is a diagram showing changes in dancer reference values.

FIG. 4 is a diagram showing changes in a speed command value, a speed detection value, a rotation speed of a wire feeding unit motor, and a rotation speed of a winding motor from the start to the end of winding the wire.

FIG. 5 is a configuration diagram showing a longitudinal rewinding device according to a second embodiment.

FIG. 6 is a detailed configuration diagram of a line feeding part inverter and a winding part inverter provided in a longitudinal object rewinding device according to a second embodiment.

FIG. 7 is a diagram showing changes in the linear velocity of the wire on the side of the wire feeding unit and changes in the linear velocity of the wire on the side of the winding unit with respect to the elapsed time of rewinding.

[Explanation of symbols]

1 wire 2 feeder section 3 Supply line motor 4 Feeder inverter 5 winding section 6 Winding part motor 7 Winding section inverter 8 Tension detector 8b Tension sensor 9 Linear velocity detector 10 Dancer reference value command input device 11 Speed command input device 21-25 rollers 31, 41 Error amplifier 32, 42 proportional integration circuit 33 calculator

Claims (5)

[Claims] 1. A supply-side rotating body for supplying a linear or strip-shaped longitudinal object, a supply motor for rotating the supply-side rotating body, a winding-side rotating body for winding the longitudinal object, and the winding. A winding motor for rotating the take-up rotating body, a tension detecting means for detecting a tension applied to the longitudinal object, a speed detecting means for detecting a speed of the longitudinal object, and a tension detecting means for detecting the tension by the tension detecting means. A first control for creating an operation amount for maintaining the tension of the longitudinal object at the tension reference value based on the difference between the value and the tension reference value and supplying the operation amount to one of the supply motor and the winding motor. Means, and an operation amount for maintaining the speed of the longitudinal object at the speed reference value based on a difference between the speed detection value detected by the speed detection means and the speed reference value, and the supply motor and the winding motor. Taking Rewinding apparatus in the longitudinal body, characterized in that it comprises a second control means for supplying to the other motor of the motor. 2. The tension detecting means is arranged on the one motor side, the speed detecting means is arranged on the other motor side, and the first control means is detected by the speed detecting means. 2. The speed detection value is input, the operation amount is added to or subtracted from the input speed detection value, and the obtained operation amount is supplied to the one motor.
The rewinding device for a longitudinal object according to claim 1. 3. The first control means and the second control means, respectively, with the passage of rewinding time of the longitudinal object,
The device for rewinding a longitudinal object according to claim 2, wherein the operation amount is changed so that the speed of the longitudinal object is constant. 4. A tension reference value input means for inputting the tension reference value, wherein the tension reference value input means is configured to increase the tension so that the tension gradually increases as the rewinding time of the longitudinal object elapses. The rewinding device for a longitudinal object according to any one of claims 1 to 3, wherein the reference value is gradually changed. 5. The tension detecting means includes a pressurizing body for contacting the longitudinal object between the supply side rotating body and the winding side rotating body to apply tension to the longitudinal object, and the pressurizing body. 3. A guide means for movably guiding a body in a vertical direction, and a sensor for outputting a tension detection signal detected based on the vertical position of the pressurizing body. 5. The rewinding device for a longitudinal object according to any one of 4 above.