JPH0793062B2 - Manufacturing method of laminated multi-core parallel electric wire - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention relates to manufacturing method of the laminated multi-core parallel cable to the inside of the electronic apparatus wiring main applications.

[0002]

Conventional laminated multi-wire parallel lines may be displayed mark or a symbol is printed on the outer surface by a printing ink
Was manufactured by.

[0003]

In the conventional laminated multi-core parallel electric wire as described above, a method of displaying by ink printing is used.
Since the method was used , the display may be blurred, blurred and blurred, or partially erased by friction,
Further, there is a problem that a clear display cannot be performed unless the display surface is a smooth surface.

The present invention has been made in order to solve the above problems, and it is possible to provide a clear display even on a display surface having irregularities , and a display which is not faded, blurred and unclear, or disappeared by friction. A laminated multi-core parallel electric wire that can easily produce the resulting laminated multi-core parallel electric wire.
The purpose is to obtain a manufacturing method .

[0005]

Means for Solving the Problems] manufacturing process of laminated multi-wire parallel wire according to the invention, between two thermoplastic insulation films, in which a plurality of conductors are arranged parallel to one another, the outer surface thereof An embossed mark consisting of letters, numbers, and patterns such as company name, trademark, mark, symbol, manufacturing date, lot number, etc. is given on the front side, and multiple parallel grooves along the entire length between the conductors are given on the back side. It is a thing.

[0006]

In the present invention, the emboss display is used.
A clear display can be obtained even on an uneven display surface, and it can be blurred, blurred and blurred, or disappeared by friction.
Free laminate titanate multicore parallel wires can be easily manufactured.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Figure 1 is a perspective view showing a part of is that the laminate multi-wire parallel lines produced by the process of the present invention, 1 in the figure two thermoplastic insulation films 1a, 1b
A thermoplastic insulating film formed by heat-sealing, 2 is a plurality of conductors embedded in parallel between the insulating films 1a and 1b, 3 is an embossed display provided on the surface of the insulating film 1,
Reference numeral 4 is a groove provided on the back surface of the insulating film 1. When the groove 4 is provided on the back surface of the insulating film 1 and the embossed display 3 is provided on the front surface as described above, a clear display can be made even on a display surface having irregularities , and further, it can be faint, blurred and unclear due to friction. I do not.

Next, a method for manufacturing the laminated multicore parallel electric wire shown in FIG. 1 will be described with reference to FIGS. Figure 1
The same or corresponding parts are designated by the same reference numerals and the description thereof will be omitted. In the figure, 5 is a heating tank, 6 is a marking roll, and a company name, trademark, mark, symbol, manufacturing date,
Letters such as lot numbers, numbers, and patterns 6a are engraved. Reference numeral 7 denotes a patterning roll, which has protruding ribs 7a for pressing between the conductors 2 in order to evenly pour the resin into the characters, numbers and patterns 6a of the marking roll 6. Reference numeral 8 is a cooling tank, and 9 is a winder.

Insulating films 1a and 1b, which have been heated and softened through a heating tank 5, are pressure-bonded from above and below to a plurality of conductors 2 which are parallel to each other by using a marking roll 6 and a shaping roll 7 to attach the insulating films 1a and 1b. Together, Figure 1
A laminated multicore parallel electric wire is obtained by embossing the marking 3 on the surface of the insulating film 1 and forming the groove 4 on the back surface of the insulating film 1.

With respect to the marking roll 6, desired characters, numbers, and patterns 6a engraved on the surface of the marking roll 6 are in contact with one surface of a laminated multicore parallel electric wire having irregularities, and an embossing indication 3 is applied to the surface. However, the cut width and depth of the letters, numbers, and the pattern 6a to be engraved here are particularly important, and these must be sufficiently selected depending on the flow-in amount of the resin, that is, the thickness of the insulating film 1.

That is, a thin insulating film 1 of 1 m / m or less
When using, the width and depth of the engraving are proportionally narrow and shallow. This is because the amount of resin flowing in is small. If the width and depth of the engraving are too wide or too deep with respect to the flow-in amount, the resin cannot be sufficiently flowed, and so-called "ear-hook" shapes appear on the letters, numbers, and patterns 6a, which is not preferable. On the other hand, if you pressurize the resin and pour the resin in to eliminate the "ear-hook", the resin of the insulating film 1 is pulled into these engraving grooves, and as a result, a gap is created between the insulating film 1 and the conductor 2, Conductor 2 and insulating film 1
It is not preferable because it causes poor adhesion with.

A thick insulating film 1 having a thickness of 1 m / m or more
In the case of using, the width and depth of engraving are slightly wider and deeper than in the case of using the thin insulating film 1. If a roll having a shallow and narrow depth and width similar to the case of using the thin insulating film 1 is used, the flowing resin cannot be completely contained in the engraved portion due to the pressure, and the conductor 2 is covered. The conductor 2 moves from a fixed position because it flows to a part, and as a result, the pitch between the lines is not uniform, and the insulating film 1 is forcibly washed away in the traveling direction,
There is a defect that the embossed display 3 on the surface collapses and becomes unclear.

Next, regarding the embossing roll 7, a uniform pressing pressure is applied to the insulating film 1 when the embossed display 3 consisting of desired characters, numbers and patterns is provided on one surface of the laminated multicore parallel electric wire having irregularities. However, the position of the rib 7a provided on the patterning roll 7 here is particularly important.

That is, the insulating film 1 in contact with the surface of the marking roll 6 flows into the engraved portion due to the degree of heating of the film and the pressing pressure with the facing surface, but in order to obtain a uniform inflow of resin, it contacts the conductor 2 which is present. It is necessary to suppress the flow of the film portion so that the pressure applied to the film portion at the line position is applied to the marking roll 6 in a balanced manner.
For this purpose, the portion located between the lines is pressurized to allow the resin in this portion to flow. In other words, the internal conductor 2
The film portion in contact with the conductor 2 is brought into close contact with the conductor 2 by pressure so that the film portion can flow into the periphery of the conductor 2.

On the other hand, the insulating film 1 located between the lines flows into the engraved portion of the marking roll 6 by the pressing pressure of the protruding rib 7a of the facing molding roll 7,
While forming the groove 4 between the conductors 2 on the back surface, the embossed display 3 clearly appears on the front surface. However, when the pressure applied between the film portion in contact with the conductor 2 and the film portion located between the lines is significantly different, a gap may be formed between the conductor 2 and the insulating film 1 or the line pitch may be uneven. Note that the embossed display 3 may be unclear depending on the case. Also, when the pressures of both are balanced, the convex portion (conductor contact portion) of the surface of the laminated multicore parallel electric wire is also the concave portion (interconductor wire portion).
A uniform embossed display 3 having the same depth can be obtained. Also, according to this method, the display from the convex portion to the concave portion can be made extremely easy.

In the above embodiment, the marking roll 6 and the embossing roll 7 and the function of applying the embossing indication 3 by them have been described, but these rolls 6 and 7 have a film and a conductor which they should have, Needless to say, it has a film-to-film bonding function.

Further, since the groove 4 is provided in the above embodiment, the embossing mark 3 can be easily provided by the groove 4, the flexibility of the laminated multicore parallel electric wire can be further obtained, and the slit processing can be facilitated. , The adhesion between the film and the conductor is improved.

Further, in the above-described embodiment, the two insulating films 1a and 1b are bonded together, and at the same time, the surface of the film is embossed with letters, numbers, patterns, etc., but it has already been commercialized by the laminating method. The re-heat treatment of the multi-core parallel electric wire may be used to emboss the film surface using the two rolls 6 and 7 described above.

[0019]

As described above, according to the present invention, it is possible to perform a clear display even on a display surface having irregularities , and further
The effect is that it is possible to easily manufacture a laminated multicore parallel electric wire having a display portion that does not blur and become unclear or disappear due to friction.

[Brief description of drawings]

1 is a perspective view showing a part of a laminate multi-core parallel cable that will be produced by the present invention.

FIG. 2 is a diagram showing a process of manufacturing the laminated multicore parallel electric wire of FIG.

3 is a perspective view showing the marking roll of FIG. 2. FIG.

4 is a cross-sectional view showing the patterning roll of FIG.

[Explanation of symbols]

1 Insulating film 2 Conductor 3 Embossing display 4 Groove 5 Heating tank 6 Marking roll 7 Molding roll 8 Cooling bath 9 Winder

Claims (1)

[Claims] 1. A structure in which a plurality of conductors are arranged in parallel with each other between two thermoplastic insulating films, and a company name, a trademark, a mark, a symbol, a manufacturing date,
A method for manufacturing a laminated multi-core parallel electric wire, which comprises embossing letters, numbers, and patterns such as lot numbers, and forming a plurality of parallel grooves along the entire length between conductors on the back side.