JPH0724371A - Wire coloring equipment - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide an electric wire coloring device which has a simple structure, is inexpensive, has few failures, and can apply a desired band mark to a long object that moves at high speed. [Constitution] By the paint sprayed from the paint nozzle 21,
Band marks are formed on the surface of the insulating coating of the long electric wire 22 at intervals. The paint nozzle is fixed and arranged so that the paint jet 23 jetted from the paint nozzle passes directly under the electric wire. A paint jet deflecting means 31 is provided for deflecting the paint jet by intermittently injecting an air jet from below against the paint jet. An air valve for opening and closing a flow path of supply air for the air jet, the paint jet deflecting means,
Alternatively, it has a rotary drive that rotates while ejecting an air jet in the radial direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking device for a long object, and more particularly to a long object such as an electric wire or a cable which is insulation-coated with a thermoplastic material or the like, and a band is formed on the surface of the insulation coating by spraying paint. The present invention relates to a wire coloring device for marking.

[0002]

2. Description of the Related Art Conventionally, an electric wire coloring device used in an electric wire extrusion line as shown in FIG. 8 has been known as a marking device for a long product. In the illustrated electric wire extrusion line, the core wire 3 is pulled out from the core wire bundle 2 wound on the core wire drum 1 and sent to the electric wire coating / applying device 4. In the electric wire coating / applying device 4, the electric wire coating material from the electric wire coating material tank 5 is applied to the outer periphery of the core wire 3 through an extruder to form a coated electric wire 6. The coating material immediately after forming the electric wire is soft, and the electric wire 6 is sent through the cooling water tank 7 to cure the electric wire, and finally wound up on the electric wire winding drum 8 to form the electric wire bundle 9.

Between the electric wire coating / applying device 4 and the cooling water tank 7, a pair of electric wire coloring devices 10 ₁ are arranged so as to face each other with the electric wire 6 in between and to be displaced from each other along the traveling direction of the electric wire 6.
And 10 ₂ are installed. The pair of electric wire coloring devices 10 ₁ and 10 ₂ are controlled by a control device 12 which inputs a linear velocity signal from an encoder 11 which detects the linear velocity of the core wire 3.

As shown in FIG. 9, each electric wire coloring device has a paint injection nozzle 10a, and a paint (not shown) containing a paint of a band mark color applied to the outer circumference of the electric wire 6 is provided at the base of the paint injection nozzle 10a. Paint is supplied from the tank through a tube 10b by a paint pump (not shown). The paint injection nozzle 10a is rotatably supported at its base in a fixed angle range, and the paint injection port 10c at the tip thereof is always held in the horizontal state shown in the drawing so as to face the electric wire 6. However, when a band mark is applied to the electric wire 6, the actuator 1 connected to the rotating shaft 10d
It is configured to be driven to reciprocate up and down in a horizontal state by 0e.

When the paint injection nozzle 10a is reciprocally driven by the actuator 10e, the paint injection port 10c is driven.
The paint spouted from the product vibrates and wavy in a plane perpendicular to the traveling direction of the electric wire 6, and when the wavy spouted paint moves across the electric wire 6, one side surface of the outer circumference of the electric wire 6 Band marks will be applied. The extra paint that has flown to the rear of the electric wire 6 is received by the paint receiver 10f,
It is collected in the paint tank described above.

The principle of the above band marking is shown in FIG.
Will be described in more detail with reference to. FIG. 10 shows a case where the paint injection nozzle 10a instead of the electric wire 6 moves along the electric wire 6, and the paint injected from the paint injection nozzle 10a periodically oscillates as shown in FIG. I will come across. As a result, the electric wire 6 is provided with band marks M _{1 on} one side surface of the electric wire 6 at regular intervals by the electric wire coloring device 10 ₁ as shown in FIG. 11A. A similar band mark is also applied by the wire coloring device 10 ₂ which is installed on the opposite side of the wire coloring device 10 ₁ with the wire 6 interposed therebetween. It Therefore, by operating both the wire coloring devices 10 ₁ and 10 ₂ in synchronization with each other, and as shown in FIG. 11B, the positions of the band marks M ₁ and M ₂ respectively applied by both devices are made to coincide with each other. The band mark is formed on substantially the entire outer peripheral surface of the electric wire 6.

[0007]

In the electric wire coloring device of FIG. 9 described above, since a band mark is formed on one side surface of the outer circumference of the electric wire 6, the paint supplied by the pump and continuously ejected from the paint ejecting port 10c is used. Since the electric wire 6 is oscillated and undulated in a plane perpendicular to the traveling direction of the electric wire 6, it is necessary to reciprocally rotate the ejection nozzle 10a by the actuator 10e. If there is a movable member composed of the jet nozzle 10a that reciprocally rotates in this way, the device becomes complicated and expensive, and also causes a malfunction. Further, there is a problem in that there is a limit to the vibration speed of the paint by the injection nozzle, the traveling speed of the long object to which the band mark is applied is limited, and the production capacity of the wire extrusion line is reduced.

Therefore, in view of the above-mentioned conventional problems, the present invention provides an electric wire coloring device which has a simple structure, is inexpensive, has few failures, and can apply a desired band mark to a long object that moves at high speed. The purpose is to provide.

[0009]

In order to achieve the above object, an electric wire coloring device according to the present invention comprises a band which is spaced from the surface of an insulating coating of a long electric wire by a paint sprayed from a paint nozzle. In an electric wire coloring device for applying a mark, the paint nozzle is fixedly arranged so that the paint jet ejected from the paint nozzle passes directly under the electric wire, and an air jet is intermittently provided from below with respect to the paint jet. It is characterized in that paint jet deflecting means for injecting the paint jet to deflect the paint jet is provided.

It is characterized in that the paint jet deflecting means has an air valve for opening and closing a flow path of supply air for the air jet, or a rotary drive for rotating the air jet while ejecting the air jet in the radial direction.

[0011]

In the above structure, the paint jet ejected from the fixedly arranged paint nozzle so as to pass directly under the electric wire is intermittently deflected by the air jet intermittently ejected from below by the paint jet deflecting means. Therefore, when an air jet is jetted, the paint jet is deflected upwards and hits the wire, and when it is not jetted, the paint jet passes directly below the wire, thereby spacing the wire insulation coating surface. Band mark is given. This intermittent jet of air is generated by opening and closing an air valve.

Further, since the air jet rotates while ejecting in the radial direction by the rotation of the rotary drive member, the air jet is jetted from below toward the paint jet only when the air jet is directed toward the paint jet during the rotation. As a result, the paint jet is intermittently deflected upward, hits the electric wire, and band marks are formed at intervals.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of an electric wire coloring device according to the present invention, in which an electric wire 22 is shown as a cross section perpendicular to the traveling direction in the section from the electric wire coating / applying device of the electric wire extrusion line to the cooling water tank. ing.

The band mark color paint applied to the outer circumference of the electric wire 22 is supplied from the paint tank 26 to the paint nozzle 21 by the paint pump 27 and flies horizontally as a paint jet 23, but the paint nozzle 21 is sprayed. The paint jet 23 is arranged and fixed so as to pass directly below the electric wire 22, and the paint jet 23 passes without hitting the electric wire 22 to reach the paint receiver 25, and is recovered and returned to the paint tank 26.

In this embodiment, as shown in FIG. 2, a paint jet deflecting means having an air valve 31 is provided below the paint jet 23 and immediately before the electric wire 22.
As shown in FIG. 4, the air valve 31 has an air inlet 31a to which air is supplied from an air supply source (not shown) in the outer peripheral portion, and an air nozzle 31b serving as an air outlet is formed in the central portion. Air inlet 31a and air nozzle 31b
The air flow path that connects to the
A valve body 31c is provided for ejecting the air supplied to a from the air nozzle 31b, or for blocking the ejection. The valve body 31c is made of a magnetic material, and has a valve portion 31c1 for opening and closing the flow path and an adsorption portion 31c2 inserted in the hollow portion of the electromagnetic coil 31d.

The valve body 31c is always urged in the direction of closing the flow passage by a coil spring 31f which is contracted between a cap-shaped attraction piece 31e fixed in the hollow portion of the electromagnetic coil 31d. When the electromagnetic coil 31d is energized, it is attracted by the attraction piece 31e against the biasing force of the coil spring 31f and is held in the open state shown in FIG.

Since the air passage is narrowed at the tip of the air nozzle 31b, when the air valve 31 is open,
Air is ejected from the air nozzle 31b as a high-speed air jet 24. As shown in FIG. 3, the air jet 24 jets the paint jet from below, so that the paint jet is deflected upward, hits the electric wire, and the paint adheres to the surface of the insulating coating. The paint that has not adhered to the electric wire 22 and has flown to the rear thereof reaches the paint receiver 25 and is collected and returned to the paint tank 26.

When the energization of the electromagnetic coil 31d of the air valve 31 is released, the valve body 31c is moved by the biasing force of the coil spring 31f, and the air flow path connecting the air inlet 31a and the air nozzle 31b as shown in FIG. Close
The air supplied to the air inlet 31a is the air nozzle 31b.
Block the release from. Therefore, the paint jet 23 is not deflected upward as shown in FIG.
The paint reaches the paint receiver 25 without adhering to the surface of the insulating coating of the electric wire 22, and is collected and returned to the paint tank 26.

As described above, by opening and closing the air valve 31, the air jet 24 is intermittently jetted from below toward the paint jet 23, and when the air jet 24 is jetted, the paint jet 23 goes upward. When deflected, it hits the wire and when not jetted, the paint jet 23 passes directly under the wire, thereby spacing the surface of the insulating coating of the wire 22 with band marks.
(Figure 3)

The air valve 31 is opened and closed by controlling the energization of the electromagnetic coil 31d by the control device (not shown) which receives the linear velocity signal from the encoder 11 for detecting the linear velocity of the core wire 3 described above with reference to FIG. For example, if the electromagnetic coil 31d is energized at a cycle of 200 C / s when the linear velocity is 5 m / s, band marks are formed on the surface of the insulating coating of the electric wire 22 at intervals of 25 mm.

FIG. 6 shows another embodiment of the wire coloring device according to the present invention. In this embodiment, the air valve 24 is rotated in the radial direction instead of the air valve 31 in the structure shown in FIG. Paint jet deflection means having a driver 32 are provided. The rotary drive 32 is
It has a rotary air nozzle 32b which is attached to a rotary shaft driven by a motor 32m, supplies air from an air supply source (not shown), and ejects a high-speed air jet 24 in a radial direction.

Since the air jet 24 rotates while ejecting in the radial direction by the rotation of the rotary drive body 32,
During rotation, as shown in FIG. 7, only when the rotary air nozzle 32b faces the paint jet 23, the air jet 24 is jetted from below toward the paint jet 23, which causes the paint jet 23 to deflect upward. Then, the electric wire 22 is hit and the paint is attached to the surface of the insulating coating. The paint that has not adhered to the electric wire 22 and has flown to the rear thereof reaches the paint receiver 25 and is collected and returned to the paint tank 26.

As shown in FIG. 6, when the rotary air nozzle 32b is not directed toward the paint jet 23, the paint jet 23 is not deflected upward, and the paint is applied to the electric wire 22.
It reaches the paint receiver 25 without adhering to the surface of the insulating coating, and is recovered and returned to the paint tank 26.

As the rotary driving body 32 rotates as described above, the air jet 24 rotates while ejecting in the radial direction, so that the air jet 24 is intermittently ejected from below toward the paint jet 23. As a result, band marks are formed on the surface of the insulating coating of the electric wire 22 at intervals.

The rotation of the motor 32m for driving the rotary driving body 32 can be controlled by the control device (not shown) which receives the linear velocity signal from the encoder 11 for detecting the linear velocity of the core wire 3 described above with reference to FIG. If the rotary driver 32 rotates at a speed of 12000 rpm when the linear velocity is 5 m / s, band marks are formed on the surface of the insulating coating of the electric wire 22 at intervals of 25 mm.

[0026]

As described above, according to the present invention, in order to apply a desired band mark to a long object moving at a high speed, a paint nozzle is fixed instead of the reciprocating paint spray nozzle. The paint jet ejected from the paint nozzle so as to pass directly below the electric wire is deflected intermittently by the air jets intermittently ejected from below by the paint jet deflecting means, whereby the insulation coating of the electric wire Since band marks are applied on the surface at intervals, compared to the one that reciprocally rotates the paint injection nozzle,
The structure can be simplified, and the device can be manufactured inexpensively and with few failures.

In particular, since the opening / closing operation of the air valve having a small mass or the continuous rotation in one direction of the rotary driving member is used, the structure is simplified and the device can be manufactured at a low cost and with few failures, and the paint jet can be operated at high speed. When applying a desired band mark to a long object that can be deflected and moves at high speed, it is possible to increase the production speed of the wire extrusion line.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of an electric wire coloring device according to the present invention.

FIG. 2 is a diagram showing an embodiment of a line coloring device according to the present invention.

FIG. 3 is a diagram showing another operation state of the apparatus of FIG.

4 is a sectional view showing an air valve in the embodiment of FIGS. 2 and 3. FIG.

5 is a diagram showing another operating state of the air valve of FIG.

FIG. 6 is a view showing another embodiment of the wire coloring device according to the present invention.

7 is a diagram showing another operation state of the apparatus of FIG.

FIG. 8 is a diagram showing a configuration of an electric wire extrusion line to which an electric wire coloring device is applied.

FIG. 9 is a diagram showing an example of a conventional wire coloring device.

FIG. 10 is a diagram for explaining the principle of band marking.

FIG. 11 is a diagram showing an example of band marks provided on an electric wire.

[Explanation of symbols]

 21 paint nozzle 22 electric wire 23 paint jet 24 air jet 31 air valve (paint jet deflecting means) 32 rotary driver (paint jet deflecting means)

Claims (3)

[Claims] 1. A paint sprayed from a paint nozzle,
In an electric wire coloring device for applying a band mark on the surface of an insulating coating of a long electric wire at intervals, the paint nozzle is fixedly arranged so that a paint jet ejected from the paint nozzle passes directly under the electric wire. At the same time, an electric wire coloring device is provided with paint jet deflecting means for intermittently jetting an air jet from below toward the paint jet to deflect the paint jet. 2. The electric wire coloring device according to claim 1, wherein the paint jet deflection means has an air valve for opening and closing a flow path of supply air for an air jet. 3. The electric wire coloring device according to claim 1, wherein the paint jet deflecting means has a rotary driving body that rotates while jetting an air jet in a radial direction.