JPH04209165A - Running and winding device for long stretching object - Google Patents

Abstract

PURPOSE:To make taking-up of a long stretching object in good performance by furnishing a takeup side control signal forming circuit to form a takeup side control signal composed of No.1 component, which corrects the difference of an object state sensing signal given by an object state sensor from its reference signal, and No.2 component corresponding to the output of a supply side rotating condition sensing means. CONSTITUTION:A long stretching object state sensor 9 generates an object state sensing signal Vt which indicates the tension, winding dia., etc. A supply side rotating condition sensing means 14 generates a rotating condition sensing signal KVO including revolving speed information for a rotary member 1 on the supply side (a capstan). A takeup side control signal forming circuit 15 forms a takeup side control signal A(Vt-Vr)+KVO consisting of the sum of No.1 component A(Vt-Vr), which is corresponding to the difference Vt-Vr of the object sensing signal Vt from its reference signal Vr, and a supply side revolving condition sensing signal KVO, and gives the obtained sum signal to a driver circuit 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for running and winding a longitudinal object (wire, strip, etc.) in a wire drawing machine, rewinding machine, etc.

[Prior Art] In a wire drawing machine, a capstan pulls a wire, and then the wire is wound around a winding frame. Conventionally, a cone pulley has been placed between the capstan and the winding frame in order to prevent the winding speed from increasing as the winding diameter of the wire with respect to the winding frame increases. By changing the positional relationship between the wire and the cone pulley as winding progresses, the tension in the wire is compensated.

[Problems to be Solved by the Invention] However, the use of a corn bobber not only complicates the mechanical structure but also makes it difficult to wind it at high speed and with high precision.

In addition, it is possible to detect the tension of the wire and control the speed of the take-up motor to keep this tension constant, or is it possible to stably obtain the desired tension by simply performing such control? is difficult, and the wire may break due to excessive tension.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a running and winding device for a longitudinal object that can run and wind up stably.

[Means for Solving the Problems] To achieve the above object, the present invention includes a supply-side rotary body for supplying a longitudinal object such as a wire or a strip, and a winding-side rotation body for winding up the longitudinal object. a rotating body, a supply side motor for rotating the supply side rotation body, a take-up side motor for rotating the take-up side rotation body, a control drive circuit for the supply side motor, and the supply side rotation. a longitudinal object state detector for detecting the tension of the longitudinal object between the body and the winding-side rotating body or the winding state of the longitudinal object by the winding-side rotating body; and the rotation of the supply-side rotating body. a supply-side rotational state detection means for directly or indirectly detecting a state; a reference signal source that generates a reference signal indicating a reference winding state of the longitudinal object; and a longitudinal object obtained from the longitudinal object state detector. a first for correcting the difference between the state detection signal and the reference signal;
and a second component corresponding to the output of the supply side rotational state detection means; The present invention relates to a traveling and winding device for a longitudinal object, which comprises a drive circuit for driving the winding motor in accordance with the output of the forming circuit.

Note that the supply-side rotating body is a capstan, a supply-side winding frame, or the like. Each motor is a DC motor or an AC motor. The longitudinal object state detector is a tension detector that detects the tension in contact with the longitudinal object between the supply-side rotating body and the winding-side rotating body, or a tension detector that detects the winding diameter of the longitudinal object on the winding-side rotating body. diameter detector, etc.

The supply side rotational state detection means is means for detecting the control voltage or drive voltage of the motor, or means for obtaining a signal component such as a voltage corresponding to the rotational speed of the motor or rotating body, or when it includes a motor drive inverter. It is means for detecting the frequency control signal of the inverter or the output frequency of the inverter.

[Function] In the present invention, the longitudinal object state detector generates a longitudinal object state detection signal Vt indicating tension, winding diameter, etc. The supply side rotation state detection means generates a supply side rotation state detection signal KvO including rotation speed information of the supply side rotating body. The winding side control signal forming circuit generates a longitudinal object detection signal Vt and a reference signal Vr.
The first component A (V
Take-up side control signal A (Vt - Vr ) + KV consisting of the sum of t - Vr ) and supply side rotation state detection signal KVO
form O and feed it to the drive circuit. As a result, the winding side motor is not controlled only by the longitudinal object state detection signal, but is controlled by taking into consideration the rotational state of the supplying motor, achieving highly accurate winding that is difficult to cut into long objects. It becomes possible.

[First Embodiment] Next, a winding device portion of a wire drawing machine for making a wire according to a first embodiment of the present invention will be explained with reference to FIG.

In FIG. 1, 1 is a capstan as a supply-side rotating body, and a wire 2 as a longitudinal object is wound in an α shape. A supply motor 3 is connected to the capstan 1 . 4 is a winding frame as a rotating body on the winding side;
A winding side motor 5 is coupled here. A supply motor 3 consisting of a DC motor is connected to a drive circuit 6, and a control circuit 7 is connected to the drive circuit 6. A take-up motor 5, which is a DC motor, is connected to a drive circuit 8. 9
is a tension detector serving as a longitudinal object state detector, and outputs a tension detection signal Vt consisting of a voltage corresponding to the tension of the wire 2 between the capstan 1 and the winding frame 4. 10 is a reference signal source which outputs a reference signal Vr consisting of a voltage corresponding to the target tension of the wire 2. The differential amplifier 11 outputs a tension control component A (Vt - Vr) corresponding to the difference between the reference signal (2) and the tension detection signal Vt.

The control circuit 7 provides the drive circuit 6 with a control signal corresponding to the target rotational speed of the motor 3. As shown by waveform 12, the target rotational speed preferably increases gradually at startup, becomes constant thereafter, and gradually decreases when stopped. The drive circuit 6 supplies the motor 3 with a voltage corresponding to the speed control signal.

The speed detection line 13 serving as a supply side rotation state detection means obtains a control signal generated from the control circuit 7 as a speed detection signal (2)0. In order to appropriately balance the tension control component A (Vt - Vr), the speed detection signal VO is multiplied by a coefficient K by a coefficient multiplier 14 to obtain a supply side rotation state detection signal KVO. The adder 15 adds the output of the differential amplifier 11 and the output of the coefficient multiplier 14 to obtain the winding side control signal A (Vj - Vr) + KVO.

This winding-side control signal is given to the drive circuit 8, and the winding-side motor 5 and the winding frame 4 are placed in a rotating state corresponding to the winding-side control signal.

As mentioned above, in the method of this embodiment, the take-up motor 5 is controlled to keep the tension of the wire 2 constant based on the output of the tension detector 9 (the supply motor 3 and the capstan 1 are controlled). Since the take-up motor 5 is controlled to follow the rotational state, the follow-up and synchronization of the winding by the winding frame 4 with respect to the capstan 1 are improved, and the fluctuation in the tension of the wire 2 is extremely small. Winding is performed well and breakage of the wire 2 due to abnormal tension is prevented.

[Second Embodiment] Next, a winding portion of a wire drawing machine according to a second embodiment shown in FIG. 2 will be described. However, parts in FIG. 2 that are common to those in FIG. 1 are designated by the same reference numerals and their explanations will be omitted. In this embodiment, a supply motor 3a consisting of an AC motor is connected to the capstan, and a winding side motor 5a consisting of an AC motor is connected to the winding frame 4. Variable frequency inverters 6a and 8a are connected to each motor 3a15a as a drive circuit, respectively. Supply side control circuit 7a
generates a control signal for controlling the driving frequency of the inverter 6a. The speed detector 13a is provided as a rotation state detection means for the supply motor 3a, and generates a speed detection signal VO consisting of a voltage corresponding to the rotation speed of the supply motor 3a.

This speed detection signal is equivalent to the signal on line 3 in FIG.

The output of the adder 15 is converted into a frequency signal by a voltage-frequency (V/f) conversion circuit 8b, and becomes a frequency control signal for the inverter 8a.

Each motor 3a, 5a rotates at a rotational speed corresponding to the output frequency of each inverter 6a, 8a.

In this embodiment as well, since the winding motor 5a is controlled in consideration of the rotational state of the supply motor 3a, followability and synchronization are improved, and winding of the wire 2 can proceed smoothly and at high speed. .

[Modifications] The present invention is not limited to the above-described embodiments, and, for example, the following modifications are possible.

(1) Instead of detecting the speed of the supply motor 3a in FIG. 2, the frequency signal of the control circuit 7a is indicated by the dotted line.
The voltage converter 13b may convert it into a voltage signal and use this as the speed detection signal.

(2) Instead of the tension detector 9, a winding diameter detector 9a is provided to detect the winding diameter of the wire 2 in the winding frame 4, as shown by the dotted line in FIG. 2, to correct changes in tension due to changes in the winding diameter. A control signal may be formed and input to the adder 15.

(3) The inverters 6a and 8a may be configured to change the voltage as well as the frequency.

(4) The present invention can also be applied to wire and tape rewinding machines, running devices, and the like. In the case of a rewinding machine, the capstan 1 is used as a supply reel.

[Effects of the Invention] As described above, according to the present invention, winding can be performed satisfactorily.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a winding device portion of a wire drawing machine according to a first embodiment of the present invention, and FIG. 2 is a block diagram showing a winding device portion of a wire drawing machine according to a second embodiment of the present invention. It is a diagram. DESCRIPTION OF SYMBOLS 1... Capstan, 2... Wire, 3... Supply side motor, 4... Winding frame, 5... Winding side motor, 6...
... Supply side drive circuit, 7... Control circuit, 8... Winding side drive circuit, 9... Tension detector, 10... Reference signal source, 11... Differential amplifier, 15... ...Adder.

Claims (1)

[Scope of Claims] [1] A supply-side rotating body for supplying a longitudinal object such as a wire or a band-shaped body; a winding-side rotating body for winding up the longitudinal object; and a rotating body for rotating the supply-side rotating body. a supply side motor for rotating the take-up side rotating body; a control drive circuit for the supply side motor; and between the supply side rotating body and the take-up side rotating body. a longitudinal object state detector for detecting the tension of the longitudinal object or the winding state of the longitudinal object by the winding-side rotating body; and a longitudinal object state detector for directly or indirectly detecting the rotational state of the supply-side rotating body. a supply side rotation state detection means; a reference signal source that generates a reference signal indicating a reference winding state of the longitudinal object; and a difference between the longitudinal object state detection signal obtained from the longitudinal object state detector and the reference signal. a winding-side control signal forming circuit that forms a winding-side control signal consisting of the sum of a first component for correcting the rotational state and a second component corresponding to the output of the supply-side rotational state detection means; and a drive circuit for driving the winding-side motor in response to the output of the winding-side control signal forming circuit.