JPH0325809A - Manufacture and device for coated wire - Google Patents

Abstract

PURPOSE:To improve the dimensional accuracy of the outer diameter of a coated wire by measuring the wire diameter after baking, and comparing the mesured wire diameter value with the previously set target value, and filling the solvent from a solvent filling hole of a dies so as to reduce the deviation. CONSTITUTION:A copper wire W supplied from a wire supplying device 2 is coated with the coating P by contacting to the surface of a coating roller 3 of which lower part is dipped in the polyurethane coating P. The copper wire W coated with the coating P passes through the inside of a dies 4, and this dies 4 has a lip part 4a and a nozzle part 4b, and a solvent filling hole 5 is provided near the lip part 4a, and a pressure exhaust hole 6 is provided near the nozzle part 4b. The outer diameter of the baked coated wire W is measured by a laser outer diameter measuring instrument 10 and while is wound by a winder 9. A controller 12 controls a metering pump 7 on the basis of the measured value of the outer diameter to control the filling quantity of the solvent L to the dies 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for manufacturing coated electric wires, and more particularly to a method and apparatus for manufacturing coated electric wires with high outer diameter accuracy.

[Prior Art] A conventional manufacturing technology for painted electric wires will be described with reference to FIG. 7.

In the conventional coated electric wire manufacturing apparatus 51 shown in FIG.
The conductor wire ω is supplied from the supply line device 2, is coated with the paint P by coming into contact with the paint roller 52 partially immersed in the paint P, and is baked with the paint by the baking machine 8. The painted electric wire W with the paint baked on is wound up by a winding machine 9.

The outer diameter of the painted electric wire W is measured by an outer diameter measuring device 53 and fed back to the coating roller 52 via the controller 54.

That is, the controller 54 compares the measured value of the outer diameter of the painted electric wire W with the target value, and changes the rotational speed of the coating roller 52 according to the deviation so that the outer diameter of the painted electric wire W remains constant. is controlled.

The above-mentioned painted electric wire manufacturing apparatus 51 is, for example,
This method is disclosed in Japanese Patent Application Laid-open No. 4-509 and Japanese Patent Laid-Open Publication No. 1983-236221.

There is also a known technique for controlling the outer diameter of a painted electric wire at a constant level by adding a diluent to the paint and adjusting the concentration of the paint according to the deviation between the measured value and the target value of the outer diameter of the painted electric wire. .

This is, for example, the Tokuko Sho 37-7. It is disclosed in Publication No. 769.

[Problems to be Solved by the Invention] Among the above-mentioned conventional techniques, the method of controlling the amount of rotation of the coating roller 52 has problems such as fluctuations in the state in which the coating roller 52 is immersed in the paint P and changes in the rotation amount of the coating roller 52. There is a problem that the control becomes unstable due to factors such as wear, and the dimensional accuracy of the outer diameter of the coated electric wire cannot be made sufficiently high.

Further, in the method of adjusting the concentration of the paint, the control becomes unstable due to factors such as time delay in control, and there is also the problem that the dimensional accuracy of the outer diameter of the coated electric wire cannot be increased.

Therefore, the purpose of this invention is to improve the stability of control,
An object of the present invention is to provide a method and apparatus for manufacturing a coated electric wire that can sufficiently increase the dimensional accuracy of the outer diameter of the coated electric wire.

[A Thousand Steps to Solve the Problems] The method for manufacturing a coated electric wire of the present invention is a method for manufacturing a coated electric wire in which paint is coated and baked on the surface of a conductor wire while running the wire. A die equipped with a wire is interposed between the coating section and the baking section, a conductor wire is run through the die, the wire diameter after baking is measured, and the measured wire diameter value is compared with a preset target value. The structure is characterized in that the solvent is injected from the solvent injection hole of the die while controlling the injection amount so as to compare and reduce the deviation.

Further, the apparatus for manufacturing a coated electric wire of the present invention includes a coating means for applying a paint to the surface of a conductor wire, a baking means for baking the paint, and a conductor wire running for running the conductor wire from the coating means to the baking means. a die means which is interposed between the coating means and the baking means, has a conductor wire running therein, and is provided with a solvent injection hole and a υt pressure hole; A solvent injection means for injecting a solvent into the inside of the die means through a hole, a wire diameter measuring means installed after the baking means for measuring the wire diameter of the coated electric wire, and a comparison between the measured wire diameter value and a preset target value. The present invention is characterized in that it includes a control means for controlling the amount of solvent injected by the injection means so as to reduce the deviation.

Furthermore, the painted electric wire manufacturing apparatus of the present invention has #i! The diameter measurement means. The wire diameter of the painted electric wire and the wire diameter of the standard wire are measured alternately at predetermined intervals, and the control means measures the wire diameter of the measured painted electric wire based on the change in the wire diameter value of the measured standard wire. A structural feature is that the diameter value or target value is corrected.

[Operation] The paint applied to the conductor wire by the application means is leveled by a die and diluted with a solvent before being baked by the baking means.

When the flFI constant value of the outer diameter of the painted electric wire after baking is larger than the target value, the injection depth of the solvent is increased to increase the dilution of the paint. This reduces the outer diameter of the painted wire.

On the other hand, when the fill constant value of the outer diameter of the coated electric wire is smaller than the target value, the amount of solvent injection is decreased to lower the degree of dilution of the paint. This increases the outer diameter of the coated wire.

Therefore, in the end, the outer diameter of the painted electric wire will converge to the target value.

In this method, there are no variables such as the immersion state or wear of the coating roller, and since the internal capacity of the die is small, there is no time delay factor.

Therefore, control is performed stably, and the dimensional accuracy and accuracy of the outer diameter of the coated electric wire can be made sufficiently high.

In addition, the wire diameter of the standard wire is measured at predetermined intervals, and the measured wire diameter value or target value of the painted electric wire is corrected according to fluctuations in the measured value, so errors caused by fluctuations in ambient temperature, etc. are avoided. This can be prevented and accuracy can be increased.

[Example] Hereinafter, the present invention will be described in more detail based on the example shown in the drawings. Note that this does not limit the invention of ζ.

In a coated electric wire manufacturing apparatus 1 according to an embodiment of the present invention shown in FIG. 1, a copper wire ω is supplied from a supply line device 2 and is in contact with the surface of a coating roller 3 whose lower part is dipped in polyurethane paint P. As a result, the paint P is applied.

The copper wire ω coated with the paint P then passes through the inside of the die 4, which passes through the lip portion 4 as shown in FIG.
a and a nozzle portion 4b, a solvent injection hole 5 is provided near the lip portion 4a, and a discharge pressure hole 6 is provided near the nozzle portion 4b. Therefore, when the copper wire ω passes through the die 4, the paint P is leveled to a thickness that corresponds to the diameter of the nozzle portion 4b, and the excess amount is removed from the lip portion 4a.

Moreover, since the solvent L, which is a mixture of cresol and xylene, is injected from the solvent injection hole 5, the paint P is diluted inside the die 4. The degree of dilution is determined by the amount of solvent L injected. The exhaust pressure hole 6 is for keeping the pressure inside the die 4 constant.

After leaving the die 4, the paint P is baked in a baking machine 8, and since the solvent evaporates at this time, the thickness of the paint layer is determined according to the degree of dilution in the die 4.

The baked coated electric wire W is wound up by a winding machine 9 while its outer diameter is measured by a laser outer diameter measuring device 10 .

As shown in FIG. 3, the laser outer diameter measuring device 10 is mounted on a slider 13, and the slider 13 is fitted onto a rail 14 and slid by rotation of a linear head motor 15. . Therefore, at the position of the slider 13 shown in FIG. 3, the laser outer diameter measuring device 10 measures the outer diameter of the painted electric wire W, but at the slid position, the laser outer diameter measuring device 10 is stretched parallel to the painted electric wire W. The outer diameter of the standard line 1 is determined to be 7Illll.

The measured value of the outer diameter of the painted electric wire W is input to the outer diameter indicator 11 and the controller 12 .

The outer diameter indicator 11 displays the measured outer diameter value to the digit of 0.1 μm.

The controller 12 controls the metering pump 7 based on the measured value of the outer diameter, and controls the amount of solvent L injected into the die 4 . In addition, the linear head motor 15 is driven periodically to switch between measuring the outer diameter of the coated electric wire W and measuring the outer diameter of the standard wire 4.

Next, the operation of the painted electric wire manufacturing apparatus 1 will be described in detail with reference to the block diagram of FIG. 4 and the flowchart of FIG. 5.

First, an operator inputs a target outer diameter value and a management classification value into the controller 12 via an input device (not shown).

The arithmetic control unit 16 of the controller 12 stores the target outer diameter value and the management classification value in the memory 17 (S1).

The calculation control unit 16 determines whether to measure the standard wire H or the painted electric wire W based on the signal from the timer 19 (S2, S5).

The first step is to measure the standard line H, and the linear head motor 15
is driven to measure the outer diameter of the mark Q line 1-I (S3).

Then, the measured outer diameter value of the standard line H is compared with the target outer diameter value, and a correction amount is calculated from the error (S4). The reason why this error occurs is due to temperature drift of the laser outer diameter measuring device 10, etc.

Next, the coated electric wire W is measured. That is, the linear head motor 15 is driven, the laser outer diameter measuring device 10 is returned to its original position, and the outer diameter of the painted electric wire W is measured (S6).

Then, based on the correction amount, the measured value of the outer diameter of the painted electric wire W is corrected (S7).

Next, the calculation control unit 16 compares the corrected measurement value of the outer diameter of the painted electric wire W with the management classification value, and determines whether it is the first management classification or the second management classification.
It is determined whether it is a management category or something else (S8, S9).

Usually, the first management category is the target outer diameter value ±0.5 to 1.0μ
m range. Further, the second management classification is set within a range of ±1.5 to 2.0 μm (excluding the range of the first management classification) of the outer diameter setting value.

If the corrected measurement value of the outer diameter of the painted electric wire W is within the range of the first control classification, the necessary dimensional accuracy of the outer diameter has been obtained, so the rotation speed of the metering bomb 7 is maintained at the current level, The injector for solvent L is maintained (S 1 0).

If it is within the range of the second management category, the rotational speed of the metering pump 7 is increased or decreased by a predetermined amount via the output converter 18, and the injection amount of the solvent is increased or decreased. Then, the rotation speed is maintained for a holding time corresponding to the time required for the painted electric wire W to move from the position of the die 4 to the position of the laser outer diameter measuring device 10 (Sll).

Furthermore, if it is not within the range of the second management classification, the rotation speed of the metering pump 7 is increased or decreased by more than a predetermined amount via the output converter 18, and in this case, the holding time as described above is increased or decreased. Not provided (S 1 2).

After step SI0, 811 or S12, the process returns to step S2.

By repeating the above operations, the outer diameter of the painted electric wire W will be maintained within the range of the first management classification.

As understood from the above description, according to the coated electric wire manufacturing apparatus 1, the dimensional accuracy of the outer diameter of the coated electric wire W can be improved.

In addition, since the amount of solvent L injected into the die 4 is controlled according to the stage of deviation, the control is prevented from becoming oscillatory, and the outer diameter value quickly converges to the required range. .

Furthermore, since the outer diameter of the standard wire H is measured at predetermined intervals and the measured value of the outer diameter of the painted electric wire W is corrected based on the measured value, errors caused by environmental fluctuations are also prevented.

Another example is a vertical coated electric wire manufacturing apparatus 21 shown in FIG. In FIG. 6, the same components as those of the coating apparatus 1 shown in FIG. 1 are given the same reference numerals. Note that 22 is a paint tank, and 23 is a paint supply bomb.

Still another example is one in which a plurality of dice 4 are provided in series.

[Effects of the Invention] According to the method and apparatus for manufacturing a coated electric wire of the present invention, since the amount of paint applied to the conductor wire can be controlled stably and without time delay, a coated electric wire with high dimensional accuracy of the outer diameter can be obtained. You will be able to do things.

In addition, it is possible to prevent errors caused by fluctuations in ambient temperature, etc.
In this respect as well, coated electric wires with high dimensional accuracy in outer diameter can be obtained.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a coated electric wire manufacturing apparatus according to an embodiment of the present invention, Fig. 2(a) is a perspective view of a die, Fig. 2(b)
) is an outline diagram of the die, Figure 3 is a perspective view of the laser outer diameter measuring device, Figure 4 is a block diagram of the control system of the device shown in Figure 1, and Figure 5 is the operation of the device shown in Figure 1. FIG. 6 is a block diagram of a coated electric wire manufacturing apparatus according to another embodiment of the present invention, and FIG. 7 is a block diagram of a conventional coated electric wire manufacturing apparatus. (Explanation of symbols) 1.21 Coated electric wire manufacturing device 3 Coating roller 4 Die 5 Solvent injection hole 6 Exhaust pressure hole 7 Metering bomb 8 ... Burning machine 9 ... Winding machine 10 ... Laser outer diameter measuring device 11 ... Outer diameter display 12 ... Controller 15 ... Linear head motor ω ... Conductor wire W ...・Painted electric wire H...Standard wire P...Paint L...Solvent. Worker Tokyo Tokushu Electric Wire Co., Ltd.

Claims (1)

[Claims] 1. A method for manufacturing a coated electric wire in which paint is coated on the surface of the conductor wire and baked while running, in which a die provided with a solvent injection hole and a pressure exhaust hole is placed between the coating part and the baking part. A conductor wire is run through the die between the two, the wire diameter after baking is measured, and the measured wire diameter value is compared with a preset target value, and the injection amount is adjusted to reduce the deviation. A method for manufacturing a coated electric wire, characterized in that a solvent is injected from a solvent injection hole of the die in a controlled manner. 2. A painted electric wire manufacturing apparatus having a coating means for applying paint to the surface of a conductor wire, a baking means for baking the paint, and a conductor wire running means for running the conductor wire from the coating means to the baking means. , a die means interposed between the coating means and the baking means, having a conductor wire running therein and provided with a solvent injection hole and a exhaust pressure hole; and a die means injecting the solvent from the solvent injection hole into the inside of the die means. a solvent injection means, a wire diameter measuring means installed after the baking means to measure the wire diameter of the painted electric wire, and a wire diameter measuring means installed after the baking means, and a wire diameter measuring means installed after the baking means, and a wire diameter measuring means installed after the baking means, and a wire diameter measuring means installed after the baking means, and a wire diameter measuring means installed after the baking means, and a wire diameter measuring means installed after the baking means, and a wire diameter measuring means installed after the baking means, and a wire diameter measuring means installed after the baking means, and a wire diameter measuring means installed after the baking means. 1. An apparatus for manufacturing coated electric wire, characterized in that it is equipped with a control means for controlling the amount of solvent injected. 3. The wire diameter measuring means alternately measures the wire diameter of the painted electric wire and the wire diameter of the standard wire at predetermined intervals, and the control means measures the wire diameter of the standard wire based on the change in the measured wire diameter value of the standard wire. Claim 2: Correcting the measured wire diameter value or target value of the coated electric wire.
Painted electric wire manufacturing equipment.