KR100441784B1 - Method and apparatus for wire marking - Google Patents

Abstract

The present invention relates to a wire printing apparatus and method using only a glow / corona discharge to affect only the molecular layer of the surface of the wire to increase the surface energy to print well, but does not change the properties of the material, the present invention It is a device to activate the surface and increase the surface energy on the surface of the insulator (P) of the wire (C) .It is supplied with the power of commercial voltage (220V, 60㎐) to high voltage, high frequency (5000 ~ 15000V, 1 ~ 20㎑) A glow / corona discharge generator 5 capable of converting to generate an electric discharge; A glow / corona treatment device connected to the glow / corona discharge generator 5 by a high voltage wire 8 to receive a high voltage and high frequency power from the glow / corona discharge generator 5 to perform glow / corona treatment. 4); characterized by using.

At this time, the glow / corona treatment apparatus 4 includes: a semi-cylindrical electrode 41 connected to the high-voltage wire 8 connected to the glow / corona discharge generator 5; A semi-cylindrical ceramic tube 42 inserted into the electrode 41 to pass through the wire C; A support 43 for supporting the electrode 41 while surrounding the lower portion of the electrode 41; The safety cover 44 which covers the electrode 41 so as not to be exposed to the outside;

Description

Wire printing apparatus and method {Method and apparatus for wire marking}

The present invention relates to an electric wire printing apparatus and method, and more particularly, by using a glow / corona discharge to affect only the molecular layer of the electric wire surface to increase surface energy so as to print well and not to change the properties of the material. A wire printing apparatus and method are disclosed.

In general, the insulator surface of the wire is identified by printing the manufacturer, the year of manufacture, and the name and specification of the wire.

At this time, the insulator that is easy to print is to improve the quality of the ink to print well, but insulators that are difficult to print such as polypropylene, polyethylene, Teflon to print well Before printing, a gas burner is used to heat the surface of the wire with a flame to activate the surface.

However, such a method has a risk of damaging the insulator, and it is not preferable because of its small effect.

The reason for the surface activation treatment on the surface of the insulator is that the adhesion of the surface of the wire is generally related to the surface energy. If the surface energy of the wire is not greater than the surface tension of the liquid, it is difficult to adhere due to the wettability. .

Therefore, the approach to solve this problem is to try to reduce the tension of the ink or increase the surface energy of the insulator.

At this time, in order to reduce the tension of the ink is used to mix a few components, there was a limit in reducing the tension of the entire solution.

As a result, a method of improving the surface adhesion of the wire is mainly focused. As a conventional method, a chemical method, a thermal method, an ultraviolet (UV) irradiation method, an electron beam irradiation method, and the like are used.

Here, the chemical method is a method of processing by passing the wire through the liquid, the solvent is used as a solvent, this solvent serves to increase the surface energy by washing the surface of the wire when the wire is immersed before printing.

That is, the solvent solution is to remove the element of fluorine from the insulator so that carbon remains in the insulator, and then combine with oxygen in the air to generate OH, O = C, COOH.

The thermal method is primarily by means of a gas burner where the wire is heated and oxidized as it passes the blue flame, resulting in higher surface energy of the insulator.

The ultraviolet irradiation method is a method of irradiating the ultraviolet ray between the ultraviolet spectrum 180nm ~ 350nm to the insulator, the fine etching and the oxidation effect is shown by the ultraviolet irradiation, the etching improves the surface energy of the insulator.

In addition, the surface energy also varies depending on the amount of UV radiation, and the shorter the wavelength, the better the effect.

In the electron beam irradiation method, the insulator is exposed to a high energy electron beam so that the bonds of molecules are broken and other types of bonds proceed. The entire insulator is deformed, and as a result, crosslinking occurs.

However, these methods have problems in terms of equipment or effectiveness.

For example, the chemical method has the disadvantage of high contamination caused by the cleaning solution, the thermal method is dangerous, high fuel cost, and the efficiency is difficult to control, but the disadvantage is that the UV irradiation method and electron beam irradiation method has the properties of the insulator There was a disadvantage of being deformed.

Therefore, the present invention is to increase the surface energy of the wire by another method in addition to the methods for increasing the surface energy of the conventional wire having the above disadvantages, the present invention is the gas ionized by the electric discharge, that is glow To provide a wire printing apparatus and method that generates free ions on the surface of an insulator through corona discharge so that the ions can be printed by cleaning, etching, surface activation, and increasing surface energy. Its purpose is to.

That is, the present invention is to provide a wire printing apparatus and method that affects only the molecular layer of the surface of the wire through corona treatment to increase the surface energy and does not change the properties of the material.

1 is a configuration diagram of a wire printing apparatus to which the present invention is applied;

Figure 2 is a detailed view showing the configuration of the glow / corona treatment apparatus according to the present invention,

Figure 3 is a perspective view of the electrode of the glow / corona treatment apparatus according to the present invention,

Figure 4 is a table showing the change state of the surface energy of the surface of the insulator of the electric wire before and after the corona treatment according to the present invention as an experimental value.

* Description of the symbols for the main parts of the drawings *

1: sending part 2: extrusion part

3: cooling unit 4: glow / corona treatment device

5: glow / corona discharge generator 6: printing unit

7: winding part 8: high voltage wire

9, 10: guide roller 41: electrode

42: ceramic tube 43: support

44: safety cover 45: corona

C: Wire P: Insulator

W: wire rod

The present invention for achieving the above object is to increase the surface activation and surface energy on the insulator surface of the wire in order to print well when printing the manufacturer, year of manufacture, product name and specifications of the wire on the insulator surface of the wire. An electric wire printing apparatus, comprising: a glow / corona discharge generating device configured to receive a power supply having a commercial voltage (220V, 60 kV) and convert the power into a high voltage and a high frequency; A semi-cylindrical electrode connected to a high voltage wire connected to the glow / corona discharge generator, a semi-cylindrical ceramic tube inserted close to the electrode and passing through the wire, and a support for covering the lower part of the electrode to support the electrode And a glow / corona treatment device configured to cover the electrode so as not to be exposed to the outside and receive electric power from a high voltage and a high frequency supplied from the glow / corona discharge generator. Provide a wire printing device.

In addition, the present invention provides a wire printing method for printing by increasing the surface activation and surface energy on the surface of the insulator of the wire, the wire transfer step of transferring the wire to the glow / corona treatment device; A glow / corona discharge generating step of receiving a power of commercial voltage (220V, 60 kV) from a glow / corona discharge generating device and converting it into a high voltage of 5000 to 15000V and a high frequency of 1 to 20 kV; A semi-cylindrical electrode connected to a high voltage wire connected to the glow / corona discharge generator, a semi-cylindrical ceramic tube inserted close to the electrode and passing through the wire, and a support for covering the lower part of the electrode to support the electrode. Glow / corona treatment step of electric discharge by receiving the high voltage, high frequency power generated in the glow / corona discharge generation step by a glow / corona treatment device composed of a safety cover to cover the electrode so as not to be exposed to the outside Wow; And a printing step of transferring the printed wire having the corona treatment completed on the surface of the insulator by the glow / corona treatment step to a printing unit and printing the printed wire.

Here, the glow / corona discharge generator is characterized by using a device that can be supplied by converting the power supply of commercial voltage (220V, 60 kW) to 5000 ~ 15000V, 1 ~ 20 kW high voltage, high frequency .

In the glow / corona treatment device, it is preferable to use an electrode connected to the glow / corona discharge generator by a high voltage wire as a positive electrode and to use a wire of a grounded wire as a negative electrode.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a wire printing apparatus to which the present invention is applied, and FIG. 2 is a detailed view showing a configuration of a glow / corona treatment apparatus according to the present invention, and FIG. 3 is a glow / corona treatment apparatus according to the present invention. Is a perspective view of an electrode.

The wire printing apparatus to which the present invention is applied can increase the surface activation and surface energy on the insulator surface of the wire in order to print well when the manufacturer, the year of manufacture, the name and specification of the wire, etc. are printed on the insulator surface of the wire. It is characterized by its configuration.

That is, the present invention is a device for surface activation and surface energy increase on the surface of the insulator of the wire, as shown in Figures 1 to 2, is supplied with the power of the commercial voltage (220V, 60㎐) to a high voltage, high frequency A glow / corona discharge generator 5 capable of converting to generate an electric discharge; A glow / corona treatment device connected to the glow / corona discharge generator 5 by a high voltage wire 8 to receive a high voltage and high frequency power from the glow / corona discharge generator 5 to perform glow / corona treatment. 4);

Here, as described above, the wire printing apparatus using the glow / corona discharge generator 5 and the glow / corona treatment device 4 according to the present invention, as shown in Figs. 1 and 2, the wire (C) Apply the insulator (P) coating on the wire (W) constituting the wire to the corona (45) treatment on the surface of the insulator (P) of the wire (C), and then print the required content in one line It means to form.

That is, the electric wire printing apparatus to which this invention is applied includes: the sending part 1 which winds and supplies the wire rod W which comprises the electric wire C to a bobbin; An extrusion part 2 for coating the outside of the wire rod W supplied from the discharge part 1 with an insulator P; A cooling unit (3) having a cooling water tank for supplying and cooling the wire (C) extruded in a high temperature state while being coated with the insulator (P) in the extrusion unit (2); A glow / corona treatment device (4) for performing corona treatment on the surface of the insulator (P) of the electric wire (C) supplied through the cooling section (3); A glow / corona discharge generator (5) connected to the glow / corona treatment device (4) by a high-voltage wire (8) for supplying power having high voltage and high frequency; A printing unit (6) for printing necessary contents on the surface of the insulator (P) of the wire (C) treated by the glow / corona treatment apparatus (4) through a printing machine; It is comprised by the winding part 7 which winds the electric wire C which passed through the said printing part 6 to the bobbin, and completes a printing operation.

In this case, the glow / corona treatment apparatus 4 is a semi-cylindrical electrode 41 connected to the high-voltage wire 8 connected to the glow / corona discharge generator 5, as shown in FIG. and; A semi-cylindrical ceramic tube 42 inserted in close contact with the electrode 41 and through which the wire C passes; A support 43 for supporting the electrode 41 while surrounding the lower portion of the electrode 41; And a safety cover 44 which covers the electrode 41 so as not to be exposed to the outside.

Here, as shown in FIG. 3, the reason why the shape of the electrode 41 is formed in a semi-cylindrical shape is that when the printing portion 6 prints on the surface of the insulator P of the electric wire C, the electrode 41 has a circular shape. Since only one side of the wire (C) is continuously printed to the corona 45 only on one side (printing surface) of the wire (C) passing between the electrodes 41, the wire (C) is a circular surface The semi-cylindrical electrode 41 is applied in order to respond | correspond so that uniform corona processing may be performed to the half printing surface.

In this case, the electrode 41 is preferably made of stainless or aluminum.

In addition, the ceramic tube 42 serves to allow the corona 45 to be uniformly generated on the insulator P of the wire C as a dielectric.

That is, if the ceramic tube 42 is not present, the corona 45 is concentrated only in one place between the insulator P and the electrode 41 of the wire C, so that uniform processing is not performed.

Ceramic, which is a material of the ceramic tube 42, is much superior to metals and plastics in its properties, and has high insulation, high dielectric constant, high dielectric constant, and low dielectric loss even in high temperature, high pressure, and high frequency regions.

In addition, the use temperature of the ceramic exceeds the melting point of most of the common metals, so it is excellent in safety.

The support 43 is a part supporting the electrode 41 by surrounding the electrode 41. Since the material has a high voltage and a high temperature at the electrode 41, the support 43 is well resistant to high temperatures and has excellent insulation properties. Preference is given to using.

As described above, the safety cover 44 is a safety device that prevents the electrode 41 from being exposed to the outside because of a risk of electric shock when the electrode 41 is exposed to the outside.

The glow / corona discharge generator 5 is installed separately from the glow / corona treatment device and is connected to each other through a high voltage wire 8, and the glow / corona discharge generator 5 has a commercial voltage (220V, 60㎐) is supplied to the high voltage, high frequency conversion to the glow / corona processing device (4) to play a role.

That is, the glow / corona discharge generator 5 converts the commercial voltage (220V, 60 mA) into a high voltage of 5000 to 15000 V and a high frequency of 1 to 20 Hz, and the conversion voltage is set according to the working conditions. This is made possible, and it is set according to the kind or working speed of the wire C in which a print job is performed.

On the other hand, the sending part 1, the extrusion part 2, the cooling part 3, the printing part 6, the winding part 7, etc. which are arrange | positioned in the one line which comprises the said electric wire printing apparatus are already well-known publicly. In describing the present invention with general components, detailed descriptions thereof will be omitted.

Therefore, the printing process in the wire printing apparatus to which the present invention configured as described above is applied will be briefly described as follows.

First, the wire rod (W) is supplied through the bobbin wound around the wire rod (W) in the sending unit 1 is sent out, and the wire rod (W) thus sent is wired through the extruder (2) in the wire rod (W) Insulator (P) is to be coated on the outside of the.

In addition, as the high temperature is generated in the process of coating the insulator P, the wire C exiting the extrusion part 2 is cooled while passing through the cooling part 3 provided with the cooling water tank to prevent the wire from being separated. It is conveyed to the glow / corona treatment apparatus 4 through the guide roller 9 provided to, and the wire (C) thus conveyed is closely inserted into the electrode 41 of the glow / corona treatment apparatus ceramic tube 42 You pass by.

At this time, when the glow / corona discharge generator 5 is operated by providing a commercial voltage (220V, 60 mA), the glow / corona discharge generator 5 is operated at 5000 to 15000 V, 1 to 20 mA. It converts into high voltage and high frequency of and supplies it to the glow / corona treatment apparatus 4 via the high voltage wire 8.

Then, a high voltage and a high frequency of the + electrode are generated in the electrode 41 of the glow / corona treatment apparatus 4 connected to the high voltage wire 8, and the wire W of the wire C is discharged from the discharge unit 1. Since it is grounded as described above, the corona 45 is generated between the electrode 41 and the insulator P of the wire C.

Corona 45 generated in this way is to clean, etch, surface activation, surface energy of the surface of the insulator (P) of the wire (C).

After completing the corona 45 treatment on the surface of the insulator P of the wire C as described above, the wire C is guided by the guide roller 10 provided to prevent the wire C from being separated. As a result, the print content transferred to the printing unit 6 equipped with the printing machine is printed and then sent to the winding unit 7 and wound up in the bobbin, thereby completing the printing operation.

As a result of empirically analyzing the effect processed through the printing process as described above, in order to bond the printing ink to the surface of the insulator P of the wire C well, the surface energy of the insulator P is It is known to be much higher than the surface tension, and ideally, the surface energy of the insulator P should be greater than the surface tension of the printing ink of 7-10 dynes / cm or more.

That is, when the surface tension of the printing ink is 30 dynes / cm, the surface energy of the insulator (P) is preferably 37 to 40 dynes / cm or more.

However, according to an experimental inspection of the surface tension change of the insulator before and after the corona treatment according to the present invention, as shown in Table 1 shown in Figure 4, the surface energy after the corona treatment compared to before the corona treatment 10 dynes / It was confirmed that the increase in more than cm.

As described above, according to the present invention, the corona treatment on the insulator surface of the wire in printing the necessary contents on the insulator surface of the wire increases the insulator surface energy of the wire, so that the printing is much better. .

In addition, due to the characteristics of corona treatment by electric discharge, a free ion group is generated on the surface of the insulator of the wire, and as the ion group washes, etches, activates the surface, and increases the surface energy, the surface of the wire It affects only the molecular layer of, so that the surface energy is increased to print well but does not change the properties of the material.

Claims (9)

In the electric wire printing apparatus configured to increase the surface activation and surface energy on the insulator surface of the wire in order to ensure good printing when printing the manufacturer, the year of manufacture, the name and specification of the wire, etc. on the insulator surface of the wire, A glow / corona discharge generator capable of supplying power of a commercial voltage (220V, 60 kV) and converting the same into high voltage and high frequency; A semi-cylindrical electrode connected to a high voltage wire connected to the glow / corona discharge generator, a semi-cylindrical ceramic tube inserted close to the electrode and passing through the wire, and a support for covering the lower part of the electrode to support the electrode And a glow / corona treatment device configured to cover the electrode so as not to be exposed to the outside and receive electric power from a high voltage and a high frequency supplied from the glow / corona discharge generator. Electric wire printing device. delete The method of claim 1, In the glow / corona treatment apparatus, an electric wire printing apparatus using an electrode connected to the glow / corona discharge generator by a high voltage wire as a positive electrode, and using a wire of a grounded wire as a negative electrode. The method according to claim 1 or 3, The glow / corona discharge generator is a wire printing apparatus characterized in that it is supplied with a commercial voltage (220V, 60㎐) of the power supply can be converted into a high voltage, high frequency of 5000 ~ 15000V, 1 ~ 20㎑ and supplied . The method according to claim 1 or 3, The electrode of the glow / corona processing device is a wire printing apparatus, characterized in that using any one of stainless, aluminum. The method of claim 1, The support of the glow / corona processing device is a wire printing apparatus, characterized in that using a Teflon material. In the electric wire printing method for printing well by increasing the surface activation and surface energy on the insulator surface of the electric wire, A wire transfer step of transferring the wire to the glow / corona treatment device; A glow / corona discharge generating step of receiving a power of commercial voltage (220V, 60 kV) from a glow / corona discharge generating device and converting it into a high voltage of 5000 to 15000V and a high frequency of 1 to 20 kV; A semi-cylindrical electrode connected to a high voltage wire connected to the glow / corona discharge generator, a semi-cylindrical ceramic tube inserted close to the electrode and passing through the wire, and a support for covering the lower part of the electrode to support the electrode. Glow / corona treatment step of electric discharge by receiving the high voltage, high frequency power generated in the glow / corona discharge generation step by a glow / corona treatment device composed of a safety cover to cover the electrode so as not to be exposed to the outside Wow; And a printing step of transferring the printed wire having the corona treatment completed on the surface of the insulator by the glow / corona treatment step to a printing unit. delete The method of claim 7, wherein In the glow / corona treatment step, an annoying glow / corona treatment device uses an electrode connected to the glow / corona discharge generator by a high voltage wire as a positive electrode, and uses a wire rod of a grounded wire as a negative electrode. A method of printing wires, wherein the glow / corona treatment is applied only to the half printed surface of the insulator surface.