JP4981633B2 - Long covering - Google Patents

Description

  The present invention relates to a long coated article. In particular, it relates to aerial covering long objects such as insulated wires and cables installed aerial, and has a plurality of troughs sandwiched between a plurality of crests adjacent to a plurality of crests at a predetermined interval in the circumferential direction on the outer peripheral surface. It is related with the provided covering long thing.

  In general, when printing a character string, pattern, etc. on the outer peripheral surface of a long covering such as an insulated wire or cable having a covering on the outer periphery, the printing ink is transferred from the printing roll to the outer peripheral surface of the covering. Printing roll system for printing patterns, etc., inkjet system for printing character strings, patterns, etc. by spraying finely printed printing ink directly on the outer peripheral surface of the coated body, and rolls imprints for printed character strings, patterns, etc. The embossing roll processed into irregularities on the outer peripheral surface is pressed against the outer peripheral surface of the covering body, and the character string, pattern, etc. are embossed (printed) (engraved) on the outer peripheral surface of the covering body. Yes.

  As printing using the embossing roll method, for example, in Patent Document 1, a laminated multi-core parallel wire provided with an embossing display consisting of letters, numbers, and patterns such as company name, trademark, mark, symbol, date of manufacture, and lot number. The manufacturing method of this is proposed. Patent Document 2 proposes an emboss printing apparatus for an insulated wire with spiral fins that performs emboss printing on the outer periphery by providing a printing roll integrated with a rotary die that manufactures insulated wires with spiral fins. Moreover, in patent document 3, when printing a continuous pattern and a character string on the surface of a covered electric wire using a printing roll, the printing roll is controlled during printing using an electromagnet provided integrally with the printing roll. Surface printing devices that can be used have been proposed.

  On the outer peripheral surface of an insulated wire or the like that has a plurality of valleys sandwiched between peaks adjacent to a plurality of peaks with a predetermined interval in the circumferential direction of the outer peripheral surface, etc. When printing characters and patterns, the printing roll method only attaches printing ink to only the tops of the peaks, and the characters and patterns cannot be identified.

Also, in the embossing roll method, characters and patterns were printed on the mountain width that is between the lowest points of two adjacent valleys, so only characters and patterns of sizes that match the mountain width can be printed, It is difficult to print so that characters and patterns can be easily identified with an insulated wire having a narrow mountain width.
Therefore, conventionally, a plurality of valleys sandwiched between a plurality of ridges adjacent to a plurality of ridges at a predetermined interval in the circumferential direction of the outer peripheral surface are provided, and the outer peripheral surface has an uneven surface. When printing a character or a pattern on the outer peripheral surface of an electric wire or the like, a large-sized character or pattern is printed in an area having a plurality of adjacent peaks using an inkjet method.

  Patent Document 4 discloses an insulated wire having an uneven outer peripheral surface and a low wind pressure insulated wire with a reduced wind pressure load. In addition, there are Patent Document 5 and Patent Document 6 as insulated wires whose outer peripheral surfaces are uneven.

Japanese Examined Patent Publication No. 7-93062 Japanese Utility Model Publication No. Hei 6-42170 Japanese Utility Model Publication No. 5-26370 JP 2001-118434 A JP 2000-57851 A JP 2006-156016 A

However, in the case of printing using printing ink by the printing roll method or ink jet method, the characters and patterns printed on the outer peripheral surface of a long coated object such as an insulated wire or cable whose outer peripheral surface is uneven are displayed. There are problems such as fading, blurring and blurring, and the vicinity of the apex of the mountain portion partially disappearing due to friction.
In addition, in the case of long coverings such as insulated wires and cables that have an uneven outer peripheral surface that is installed in the aerial, characters and patterns printed by the printing roll method or inkjet method can be used outdoors for a long period of time. Therefore, there is a problem that printing is lost due to deterioration of ultraviolet rays or the like, and characters and patterns cannot be discriminated.

  The present invention has been made in order to solve the above-described problems, and can emboss and print characters and patterns of a size that can be distinguished on the outer peripheral surface, and reduce the deterioration of characters and patterns due to aerial installation. To provide a long covering such as an insulated wire or cable having a plurality of valleys sandwiched between a plurality of crests adjacent to a plurality of crests at a predetermined interval in the circumferential direction on an outer peripheral surface. For the purpose.

The following invention is provided to solve the above-mentioned conventional problems.
The long covering according to the first aspect of the present invention has a plurality of crests and a plurality of troughs sandwiched between two crests at a predetermined interval in the circumferential direction on the outer peripheral surface of the covering. A long coated article provided, wherein a stamped character string made up of one or more stamped characters is identified and displayed on the outer peripheral surface of the coated body, and the stamped characters identified and displayed on the coated long object are convex. together are stamped on Jo, the engraved depth of the engraved characters is not less than the height of the ridges, and the circumferential direction of one of the engraved character height or character width is one even without least wherein a length in the circumferential direction, including two of the ridges adjacent to the sandwiched therebetween circumferentially valley, further, two said engraved characters adjacent to each other in the circumferential direction across at least one of said valleys It is characterized in that it is identified and displayed in an area including the mountain part.

  Thereby, on the outer peripheral surface of a long covering object such as an insulated wire or a cable provided with a plurality of troughs sandwiched between a plurality of peak portions adjacent to the plurality of peak portions at a predetermined interval in the circumferential direction on the outer peripheral surface. The size of the character height or character width of the stamped character in the circumferential direction of the coated long object embossed is increased, and the stamped character string can be easily identified. Here, the engraved characters are one or more characters, numbers, patterns, etc. embossed with characters such as company names, trademarks, marks, symbols, manufacturing dates, lot numbers, numbers, patterns, and the like. In addition, the character height or character width of the engraved character in the circumferential direction of the coated long object is the character height of the engraved character when the engraved character string is printed in the longitudinal direction of the coated long object. When a stamped character string is printed in the circumferential direction of the long covering material, it is the character width of the stamped character.

In addition, the outer periphery of a covered long object such as an insulated wire or cable provided with a plurality of troughs sandwiched between crests adjacent to a plurality of crests at a predetermined interval in the circumferential direction. The convexity of the stamped character embossed on the surface becomes clear, and the stamped character string can be distinguished more clearly. Further, even if a long covering material is used outdoors for a long period of time, it is possible to avoid the disappearance of the stamped character string. That is, it is possible to reduce the degradation of the stamped character string due to the aerial installation.

  Here, the height of the peak is the difference between the radius of the circle inscribed or approximately inscribed at the apex of the peak in the circumferential direction and the radius of the circle that circumscribes or approximately circumscribed the lowest point of the valley in the circumferential direction. It is. In addition, the marking depth of the marking characters is in the range up to the thickness of the insulation coating capable of withstanding voltage in the insulation design for insulated wires and the like.

According to the present invention, a long covering material such as an insulated wire or a cable provided with a plurality of troughs sandwiched between crests adjacent to a plurality of crests at a predetermined interval in the circumferential direction on the outer peripheral surface. , The size of the character height or character width of the circumferentially imprinted characters embossed and printed on the outer peripheral surface is increased, and the imprinted character string can be easily identified. Further, the convexity of the stamped character becomes clear, and the stamped character string can be discriminated more clearly. Further, the manufacturing company, the manufacturing date, the electric wire type, and the like can be discriminated (identified) by the stamped character string.
In addition, according to the present invention, the low wind pressure performance of the low wind pressure insulated electric wire can be maintained even if the identification display is attached.

  Further, even if a long covering material is used outdoors for a long period of time, it is possible to prevent the stamped character string from being lost. That is, it is possible to reduce the degradation of the stamped character string due to the aerial installation.

  An embodiment of the present invention will be described with reference to the drawings. In addition, embodiment described below is for description and does not limit the scope of the present invention. Accordingly, those skilled in the art can employ embodiments in which each or all of these elements are replaced by equivalents thereof, and these embodiments are also included in the scope of the present invention.

  FIG. 1 is an example of a cross-sectional view of a long coated object to which the present invention can be applied, and FIG. 2 is an example of a perspective view showing a part of the long coated object to which the present invention can be applied. 3 is an example of a schematic perspective view of an embossing roll used for emboss printing, and FIG. 4 is an example of a schematic longitudinal sectional view and a schematic front view of the embossing roll of FIG. 4A is a schematic vertical cross-sectional view when the engraved character string is convex, and FIG. 4B is a schematic front view taken along the line AA in FIG. (C) of FIG. 4 is a schematic longitudinal sectional view when the engraved character string is formed into a concave shape, and (d) of FIG. 4 is a schematic front view taken along line BB of (c). Below, an insulated wire is mentioned as an example and it demonstrates as a covering long thing.

  As shown in FIG. 1, the insulated wire 10 includes a conductor 11 and a covering 12 that is an insulating layer formed by coating an outer periphery of the conductor 11 by extruding an insulating material. The covering body 12 is provided with a plurality of peak portions 13 and a plurality of valley portions 14 sandwiched between the adjacent peak portions 13 at a predetermined interval in the circumferential direction on the outer peripheral surface. Each peak 13 has a rounded convex outer curved surface, each valley 14 has a rounded concave concave curved surface, and the curved surface of the peak 13 and the curved surface of the valley 14 are smoothly connected. Moreover, the peak part 13 and the trough part 14 are linearly formed in the longitudinal direction of the insulated wire 10.

  Further, as shown in FIGS. 2 and 3, the insulated wire 10 has a stamped character string 32 formed of one or more stamped characters 31 embossed on the outer peripheral surface of the covering 12. Emboss printing is a roll-shaped embossing roll 20 having a stamped portion 21 (22) in which a stamped character string 32 is reversed on the outer peripheral surface which is an outer concave curved surface before the covering 12 of the insulated wire 10 is completely cured. Is pressed, and the embossing roll 20 is rotated by friction between the covering 12 and the embossing roll 20 due to the movement of the insulated electric wire 10 in the longitudinal direction, whereby printing is performed in the longitudinal direction of the insulated electric wire 10. It should be noted that the interval between the stamped character strings 32 embossed multiple times on the outer peripheral surface of the covering 12 of the insulated wire 10 is the outer peripheral length of the embossing roll 20.

  As shown in FIGS. 1, 2, 4 (a) and 4 (b), the character height S of the stamped character 31 embossed on the outer peripheral surface of the covering 12 of the insulated wire 10 is 1 The length is at least 1 in the circumferential direction composed of the individual valleys 14 and the two peaks 13 adjacent in the circumferential direction across the valleys 14. Further, the marking depth D1 of the marking character 31 is equal to or higher than the height h of the mountain portion 13. In addition, the marking depth D1 of the marking character 31 is in the range up to the thickness of the minimum insulator (covering body 12) in the insulation design in the insulated wire 10.

  As shown in FIG. 1, the height h of the peak portion 13 is such that the radius of the circle 15 that is inscribed or substantially inscribed at the apex of the peak portion 13 in the circumferential direction and the lowermost point of the valley portion in the circumferential direction is circumscribed or approximately This is the difference from the radius of the circumscribed circle 16. Further, the length l is a distance between four consecutive points on the circle 17 whose radius is the average of the radius of the circle 15 and the radius of the circle 16 and the outer peripheral surface of the covering 12.

  As described above, the character height S is equal to or longer than the length l, and the stamped character 31 has the stamped depth D1 equal to or higher than the height h of the peak portion 13. By emboss printing on the outer peripheral surface, the size of the character height S of the stamped character 31 is increased, and the stamped character string 32 can be easily identified. Further, the unevenness of the stamped character 31 becomes clear, and the stamped character string 32 can be discriminated more clearly.

Further, the marking portion 21 (22) to the embossing roll 20 in FIG. 3 provided in multiple stages, the marking character 31 as shown in FIG. 2 can be printed in multiple stages. Further, by enlarging the embossing roll 20 in the direction along the outer periphery of the insulated wire 10, the marking portions 21 (22) can be provided in multiple stages, and the marking characters 31 can be printed in multiple stages. Further, by preparing a plurality of embossing rolls 20 and arranging them in parallel or / and in series, the stamped characters 31 can be printed in multiple stages.

  In addition, since the circumference becomes longer by increasing the diameter of the embossing roll 20, a large number of characters can be printed in the longitudinal direction of the insulated wire 10. Alternatively, a stamped character or / and a stamped character string can be printed intermittently.

  Moreover, even if the insulated wire 10 is used outdoors for a long period of time, the stamped character string 32 can be prevented from disappearing. That is, it is possible to reduce the degradation of the stamped character string 32 due to the aerial installation.

  Although the emboss printing of the insulated wire 10 described above is printing in the longitudinal direction of the insulated wire 10, printing in the circumferential direction of the insulated wire 10 may be used. At that time, printing is performed so that the character width of the stamped character 31 is not less than the length l and the stamping depth D1 of the stamped character 31 is not less than the height h of the peak portion 13.

  Moreover, although the embossing printing of the insulated wire 10 mentioned above was printed using the embossing roll 20, the marking part 41 which reversed the marking character string 32 on the surface which is an outwardly concave curved surface as shown in FIG. It may be the stamp 40 that it has.

  Moreover, the emboss printing of the insulated wire 10 mentioned above is the case where it forms by protruding the stamped character 31 from a peripheral part as shown in FIG.4 (a) and (b), and FIG.4 (c). ) And (d), the place where the stamped character 31 is formed by sinking in a concave shape from the peripheral portion is described, but the stamped character 31 is convex from the peripheral portion and concave. May be mixed.

  The above has been found from experimental results obtained by experimentally testing the insulated wire 10 embossed with the stamped character string 32 under various conditions. Next, the result of having experimented using the insulated wire 10 made as an experiment on various conditions embossed and printed using the embossing roll 20 is shown.

Example 1
The embossing roll is used for the insulated wire which has an unevenness | corrugation in the outer periphery shown in FIG. 1, and the discrimination | determination of the stamped character by the difference in the stamping depth and the character height of the stamping character emboss-printed on the insulated wire is shown. Table 1 also shows the results of measuring the low wind pressure performance when the insulated wire has low wind pressure performance. In addition, the used insulated wire is a low wind pressure insulated wire, and an outer diameter is about 20 mm, the height of a peak part is 0.5 mm, and the space | interval of a peak part is 2.1 mm. Here, the interval between the peaks is the distance between the vertices of two peaks adjacent to each other across one valley. In addition, the character height corresponds to the number of adjacent peak portions across the valley.

  Whether or not the stamped characters can be distinguished is determined to be discriminable (○) when the stamped characters embossed on the outer peripheral surface of the insulated wire sheath can be clearly distinguished, and it is possible to distinguish when the margin can be visually discriminated. (△), and the case where it cannot be visually discriminated is marked as indistinguishable (×).

  The low wind pressure performance is a wind pressure characteristic when an insulated wire is placed in a predetermined wind, including an embossed printed portion, and the longitudinal direction of the insulated wire having a predetermined length with respect to the wind direction is placed at right angles. When the low wind pressure characteristic of the uninsulated insulated wire is 100% and the low wind pressure characteristic of the embossed insulated wire is less than 90% (decrease in low wind pressure performance is more than 10%) When the wind pressure characteristics were 90% or more, the low wind pressure performance was maintained (O).

  Depending on the setting of the wind pressure characteristics and the line design for laying insulated wires, it may be necessary to keep the low wind pressure performance to about 60% compared to insulated wires that are not embossed. In this case, low wind pressure performance is set each time by changing the thickness of the insulated wire, the size, quantity, shape, etc. of the irregularities on the outer periphery of the insulated wire, the number of embossed printed characters and the size, etc. You can do it.

As can be seen from Table 1, the stamping depth of the stamped characters is 0.5 mm or more, and the number of adjacent mountain portions across the valley is two or more (that is, the character height is 3 mm or more). It was found that the engraved characters can be clearly distinguished.
In addition, under the conditions except when the stamping depth of the stamped character is 0.5 mm or more and the number of ridges is one (that is, the character height is 1.5 mm), the low wind pressure performance I found that I could hold it. In addition, when the stamping depth of the stamped character is 0.5 mm or more and the number of ridges is one (that is, the character height is 1.5 mm), the cause of the decrease in the low wind pressure performance is the character This is because the ridges adjacent to each other are crushed by the outer peripheral portion other than the stamped portion of the embossing roll because the height is small.

  From the above, the stamping depth of the stamped character is equal to or higher than the height of the mountain portion, and the character height of one stamped character in the circumferential direction to be embossed printed is sandwiching at least one valley. It is the length in the circumferential direction including two crests adjacent in the circumferential direction, and the stamped character is embossed in an area including two crests adjacent in the circumferential direction across at least one trough. In the insulated electric wire, the size of the character height of the engraved character becomes large and the engraved character string can be easily discriminated, and the unevenness of the engraved character becomes clear, and the engraved character string can be discriminated more clearly. I knew it was possible.

(Example 2)
The embossing roll is used for the insulated wire having irregularities on the outer periphery shown in FIG. Tables 2 to 5 also show the results of measuring the low wind pressure performance when the insulated wire has low wind pressure performance. In addition, two crests that are printed (embossed) by an embossing roll, the imprinting depth of the imprinted character is the height of the crest, and the imprinted character is adjacent in the circumferential direction across one trough Embossed printing was performed on the area including

  As can be seen from Table 2 to Table 5, the outer diameter of the insulated wire (about 10 mm, 30 mm), the height of the peak (0.2 mm, 0.3 mm, 0.6 mm, 0.9 mm), and the distance between the peaks It was found that even if (about 0.9 mm, 1.3 mm, 2.6 mm, 3.9 mm) is different, the engraved characters can be clearly distinguished. It was also found that low wind pressure performance can be maintained even when the outer diameter of the insulated wire, the height of the ridges, and the interval between the ridges are different.

  From the above, the stamping depth of the stamped character is equal to or higher than the height of the mountain portion, and the character height of one stamped character in the circumferential direction to be embossed printed is sandwiching at least one valley. It is the length in the circumferential direction including two crests adjacent in the circumferential direction, and the stamped character is embossed in an area including two crests adjacent in the circumferential direction across at least one trough. In the insulated electric wire, the size of the character height of the engraved character becomes large and the engraved character string can be easily discriminated, and the unevenness of the engraved character becomes clear, and the engraved character string can be discriminated more clearly. I knew it was possible.

  In addition, color ink may be applied or printed on any engraved character of the present invention almost simultaneously with emboss printing or afterwards.

It is an example of the cross-sectional view of the covering elongate object which can apply this invention. It is an example of the perspective view which shows a part of covering long thing which can apply this invention. It is an example of the schematic perspective view of the embossing roll used for emboss printing. It is an example of the schematic longitudinal cross-sectional view and schematic front view of the embossing roll of FIG. It is an example of the schematic perspective view of the stamp used for emboss printing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Insulated electric wire 11 Conductor 12 Covering body 13 Peak part 14 Valley part 20 Embossing roll 21 Stamping part 31 Stamping character 32 Stamping character string

Claims (1)

A covering long object provided with a plurality of crests and a plurality of troughs sandwiched between two crests at a predetermined interval in the circumferential direction on the outer peripheral surface of the covering,
A stamped character string composed of one or more stamped characters is identified and displayed on the outer peripheral surface of the covering,
The stamped letter recognized displayed on the coating long was, while being inscribed in a convex shape, and the engraved depth of the engraved characters or height of the ridges, and the circumferential direction of one of the even without least a character height or character width of engraved characters are circumferential length comprising one of said valleys two of the crest sandwiched therebetween circumferentially adjacent to, further, the engraved characters at least A long covering material, characterized in that it is identified and displayed in a region including two crests adjacent in the circumferential direction across one trough.

Images