JPH0575258U - Wire winding device - Google Patents

Abstract

(57) [Summary] [Structure] A take-up speed detector 10 for detecting the take-up speed of the take-up machine 4 and a storage amount detector 16 for detecting the electric wire storage amount of the accumulator 5 are provided. Winding speed controller 20
Sets the winding speed corresponding to the take-up speed, corrects the winding speed according to the accumulated amount, and increases / decreases the winding speed so that the accumulated amount of the accumulator 5 is always kept at the reference value. To do. [Effect] The amount of the electric wire 1 accumulated in the accumulator 5 does not exceed a certain range or decrease below a certain amount.
A constant tension can be applied to the electric wire 1 wound by the winder to stably wind the electric wire.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric wire winding device used to take an electric wire at a predetermined speed on an electric wire production line.

[0002]

[Prior Art]

 In an electric wire production line, it is required that the electric wire be drawn and wound at a constant speed after being processed. FIG. 4 shows a schematic view of an electric wire winding device in an extrusion line, for example. In this line, the electric wire 1 is supplied from a supply drum 2 and sent to an extruder 3 after passing through a supply mechanism (not shown). Then, the electric wire 1 is coated with a resin or the like, passed through the take-up machine 4 and the accumulator 5, and taken up by the take-up drum 6.

The take-up machine 4 is composed of a device for taking out the electric wire 1 at a constant speed so as to make the extrusion coating conditions uniform. The accumulator 5 is provided to absorb the linear velocity fluctuation between the take-up machine 4 and the winding drum 6, and includes a movable sheave 5A around which the electric wire 1 is wound several times and a fixed sheave 5B. .. That is, when the speed of the electric wire 1 taken up by the take-up machine 4 is slightly higher than the speed at which it is taken up by the take-up drum 6, the movable sheave 5A is fixed to the fixed sheave 5B as shown in FIG. 4 (b). Away from the electric wire 1 to increase the accumulated amount of the electric wire 1. Further, when the winding speed of the winding drum 6 is higher than the speed of the electric wire drawn by the take-up machine 4, the movable sheave 5A approaches the fixed sheave 5B to reduce the amount of the electric wire 1 accumulated. Reduce. In this way, the deviation of the synchronizing speed between the take-up machine 4 and the winding drum 6 is corrected. An electric wire winding device of this type is described in, for example, Japanese Patent Publication No. 45-26329.

[0004]

[Problems to be solved by the device]

 By the way, the accumulator 5 as described above keeps the tension of the electric wire 1 wound on the winding drum 6 constant so that the electric wire 1 is wound on the winding drum 6 in an orderly manner. Therefore, the movable sheave 5A is preliminarily applied with a constant force by a spring or the like (not shown) so as to be separated from the fixed sheave 5B, and a reverse tension for winding is applied. Further, the winding speed of the winding drum 6 is controlled so that the movable sheave 5A and the fixed sheave 5B do not come too close to each other.

However, as shown in FIG. 4D, for example, the winding diameter D1 of the electric wire 1 wound around the winding drum 6 is different between the case shown in FIG. 4D and the case shown in FIG. As can be seen from the comparison, when D1 is increased to D2, the winding speed of the electric wire 1 becomes faster in the case of Fig. (E) even when the winding drum 6 is driven at the same rotation speed. .. As a result, a deviation occurs in the control of the winding speed of the winding drum 6, the movable sheave 5A approaches the fixed sheave 5B too much and the two collide with each other, and the electric wire 1 may be broken or the machine may be broken. ..

The present invention has been made in view of the above points. The winding speed of the winding drum is synchronized with the winding speed of the winding machine with high accuracy, and the electric energy accumulated in the accumulator is almost constant. The purpose of the present invention is to provide an electric wire winding device capable of controlling the amount of the electric wire.

[0007]

[Means for Solving the Problems]

 An electric wire winding device of the present invention includes a take-up machine for taking electric wires on a manufacturing line at a predetermined speed, a take-up machine for taking up the electric wires taken by the take-up machine, the take-up machine, and the take-up machine. An accumulator that is arranged between the winding machines and temporarily stores a predetermined amount of electric wires; a take-up speed detector that detects the take-up speed of the take-up machine; and an accumulated amount that detects the accumulated amount of electric wires in the accumulator. The detector and the winding speed corresponding to the take-up speed are set, and the winding speed is corrected according to the accumulated amount so that the accumulated amount in the accumulator is maintained at the reference value. A winding speed control unit for controlling the winding speed is provided.

[0008]

[Action]

 This wire winding device is equipped with a take-up speed detector that detects the take-up speed of the take-up machine and an accumulated amount detector that detects the accumulated amount of electric wires in the accumulator. Then, the winding speed control unit sets the winding speed corresponding to the take-up speed and corrects the winding speed according to the accumulated amount so that the accumulated amount of the accumulator is always kept at the reference value. Increase / decrease the winding speed. As a result, the amount of electric wire accumulated in the accumulator does not exceed a certain range or decreases below a certain amount, and a certain tension is applied to the electric wire wound by the winder to perform stable winding of the electric wire. be able to.

[0009]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a block diagram showing an embodiment of an electric wire winding device of the present invention. The apparatus shown in the figure shows the main part of the electric wire production line already described in FIG. Here, the electric wire 1 is taken up by the take-up machine 4 and taken up by the take-up machine 6. An accumulator 5 is arranged between the take-up machine 4 and the take-up machine 6. The arrangement and configuration of these are exactly the same as those of the apparatus described in FIG. That is, the take-up machine 4 takes up the electric wire 1 on the production line at a constant speed, and the take-up machine 6 takes up the electric wire 1. The accumulator 5 is a device that absorbs linear velocity fluctuations between the take-up machine 4 and the take-up machine 6 and temporarily stores a predetermined amount of electric wire.

The device of the present invention is provided with a take-up speed detector 10 for detecting the take-up speed of the take-up machine 4. The take-up speed detector 10 has a well-known rotary type in which a large number of radial slits 11 are formed on a disk 12 and the light passing through the slits 11 is detected by using a transmissive optical sensor 13. An encoder is provided. The output of the transmissive optical sensor 13 is connected to the frequency / voltage converter 15. The frequency / voltage converter 15 is composed of, for example, an integrating amplifier or the like, and has a circuit structure that outputs a voltage proportional to the frequency of the input pulse. The output signal of the frequency / voltage converter 15 is configured to be input to one terminal of the four gear detection switches S1 to S4. The four gear detection switches S1 to S4 are respectively connected in series with the adjustment volumes VR1 to VR4, and constitute four sets of parallel circuits as a whole.

Any one of the gear detection switches S1 to S4 is configured to be turned on in accordance with the gear selected by the transmission 22 attached to the output shaft of the motor 21, which will be described later. For example, when the gears are switched to 1st, 2nd, 3rd, 4th, and 4th, when the second gear is used, only the gear detection switch S2 is turned on, and the frequency / voltage conversion is performed. The output of the container 15 is output from the take-up speed detector 10 via the gear detection switch S2 and the adjusting volume VR2. These adjustment volumes VR1 to VR4 are for adjusting the output voltage according to the selected gear, and the take-up speed detector 10 can take out the pick-up speed regardless of the gear selected by the device. The voltage signal corresponding to the absolute take-up speed of the machine 4 is output to the take-up speed controller 20.

On the other hand, the accumulator 5 is connected to a storage amount detector 16 for detecting the storage amount of the electric wire 1 by detecting the position of the movable sheave 5A. The output of the storage amount detector 16 is also output to the winding speed control unit 20 as a voltage signal proportional to the storage amount. The winding speed control unit 20 is provided with a computing unit 17, an inverter 18, a motor 21, and a speed changer 22. The calculator 17 receives the output of the take-up speed detector 10 and the output of the accumulated amount detector 16, determines the take-up speed of the take-up machine 6, and sends a signal for its control to the inverter 18. This is the output circuit. The inverter 18 is a circuit for controlling the motor 21 at a variable speed. The output shaft of the motor 21 is connected to the winder 6 via the transmission 22. As a result, the winding machine 6 is driven at a predetermined speed to wind the electric wire 1. As described above, the signal corresponding to the gear selected by the transmission 22 is fed back to the take-up speed detector 10, and the gear detection switches S1 to S4 are selectively turned on and off. It is composed.

FIG. 2 is a graph showing the relationship between the take-up speed and the take-up speed of the above electric wire take-up device. This graph shows the take-up speed V1 on the vertical axis and the take-up speed V2 on the horizontal axis. First, when the take-up speed and the take-up speed of the take-up machine and the take-up machine are completely the same, the two are proportional to each other as indicated by a straight line P in the figure. In such a state, the amount of the electric wire 1 accumulated in the accumulator 5 is always kept at a constant value. However, a change in the winding speed of the winding machine 6 may disturb the relationship between the winding speed and the winding speed as indicated by the broken line 9 in FIG. At this time, as shown in the figure, the right side portion of the straight line P is a region where the electric wire accumulation amount of the accumulator 5 decreases, and the left side portion is a region where the electric wire accumulation amount of the accumulator 5 increases. Then, the area of the hatched portion increases or decreases the amount of accumulated electric wires in the accumulator 5. If this area exceeds a certain level, the distance between the movable sheave 5A and the fixed sheave 5B of the accumulator 5 will be significantly separated or significantly approached, and some trouble will occur.

Therefore, in the device of the present invention, first, the take-up speed detector 10 detects the take-up speed of the take-up machine 4, and when the amount of accumulated electric wire in the accumulator 5 is an appropriate value, the take-up speed is detected. The motor 21 is variable-speed controlled so as to perfectly follow the speed. On the other hand, when the output of the accumulated amount detector 16 becomes less than the reference value, the movable sheave 5A of the accumulator 5 is too close to the fixed sheave 5B. Slow the winding speed of 6. When the accumulated amount becomes equal to or larger than the reference value, the winding speed of the winding machine 6 is increased. This increase / decrease is realized by using the output signal of the accumulated amount detector 16 in the arithmetic unit 17 for correcting the winding speed.

In order to detect the accumulated amount as described above, the accumulated amount detector 16 can be configured as follows, for example. FIG. 3 shows an embodiment of the accumulated amount detector 16, (a) is a front view thereof, and (b) is a side view partially including the AA cross section. In the figure, the movable sheave 5A slides forward and backward in the direction of arrow 30 according to the amount of accumulated electric wires. A mechanism as shown in the figure is adopted to detect the position of the movable sheave 5A and obtain a signal corresponding to the position. That is, an arm 23 is directly connected to the shaft of the movable sheave 5A, and a spherical cam 24 is fixed to the tip of the arm 23. The cam 24 is arranged so as to come into contact with a rib 25 provided on the outer peripheral surface of a shaft 26 which rotates following the change in the position of the movable sheave 5A. That is, the rib 25 is formed in a spiral shape on the outer peripheral surface of the shaft 26, and pushes the rib 25 vertically upward when the cam 24 moves to the right with respect to the shaft 26 in FIG. 3D. A force is applied to rotate the shaft 26 in the direction opposite to the arrow 31. A synchro-generator 28 composed of a variable resistor or the like is connected to a rotary shaft 27 of the shaft 26. That is, the angle of the rotary shaft 27 of the synchro generator 28 is determined by the position of the movable sheave 5A. It is assumed that the shaft 26 is applied with a returning rotational force in the direction of arrow 31 in the figure by a spring or the like so that the rib 25 is always in contact with the cam 24.

Such an accumulation amount detector 16 shows a minimum value when the voltage output from the synchro-generator 28 is on the leftmost side, and a maximum value when it is on the rightmost side, for example. Show the value. As a result, the position of the movable sheave 5A can be accurately transmitted to the calculator 17 shown in FIG. 1, and the accumulated amount of the electric wire can be reflected in the winding speed.

The present invention is not limited to the above embodiments. In the above-described embodiment, the take-up speed detector 10 and the accumulated amount detector 16 are constituted by circuits for processing so-called analog electric signals, but the rotational speed of the take-up machine 4 and the movable sheave 5A of the accumulator 5 are arranged. There is no problem even if the signal for detecting the position etc. is converted into a digital signal and the drive inverter of the motor 21 is variably controlled by a microcomputer or the like. Further, the accumulated amount detector 16 may be composed of a slide volume or the like whose knob is moved by the movable sheave 5A. Furthermore, the wire winding device of the present invention can be applied not only to the above-mentioned extrusion line but also to various production lines for processing electric wires.

[0018]

[Effect of the device]

 The electric wire winding device of the present invention described above detects the take-up speed of the take-up machine, detects the accumulated amount of electric wires in the accumulator, and sets the take-up speed corresponding to the take-up speed. The winding speed is corrected according to the accumulated amount, and the winding speed is controlled so that the accumulated amount in the accumulator is maintained at the reference value.Therefore, more electric wires are accumulated in the accumulator than necessary. In addition, the amount of accumulated electric wire is not significantly insufficient, and the tension of the electric wire wound on the winder can be stably maintained and the device can be smoothly controlled.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an electric wire winding device of the present invention.

FIG. 2 is a graph for explaining the relationship between the wire take-up speed and the winding speed.

3A and 3B show an embodiment of a storage amount detector used in the device of the present invention, in which FIG. 3A is a front view thereof, and FIG.
It is a side view which includes a -A section in a part.

FIG. 4 is a schematic view showing an example of a conventional wire winding device,
(A) is a schematic side view of the apparatus, (b) and (c) are side views of the accumulator in different states, respectively (d).
(E) is a side view of the winding drum in the state where each winding amount differs.

[Explanation of symbols]

 4 take-up machine 5 accumulator 6 take-up machine 10 take-up speed detector 16 accumulated amount detector 20 take-up speed control unit

Claims (1)

[Scope of utility model registration request] 1. A take-up machine that takes up an electric wire on a production line at a predetermined speed, a take-up machine that takes up the electric wire taken up by the take-up machine, and a take-up machine and the take-up machine. An accumulator disposed between and temporarily accumulating a predetermined amount of electric wire, a take-up speed detector that detects the take-up speed of the take-off machine, and an accumulated amount detector that detects the accumulated amount of the electric wire of the accumulator, Receiving output signals of the take-up speed detector and the accumulated amount detector, setting a take-up speed corresponding to the take-up speed, and correcting the take-up speed according to the accumulated amount, An electric wire winding device, comprising: a winding speed control unit that controls the winding speed so that the accumulated amount of the accumulator is maintained at a reference value.