JPH03173015A - Printing method on surface of cable - Google Patents

Abstract

PURPOSE:To prevent the reading of an identification mark and a length graduation from being made difficult as a result of mutual overlapping of both marks, by feeding ink to the peripheral plane of a rotating roll having the reverse shape of the identification mark and the reverse shape of the length scale mark respectively carved on the peripheral plane, and at the same time rotating the roll into contact with the surface of a cable. CONSTITUTION:An identification mark 4 and a length graduation 5 are carved respectively on the peripheral plane of a rotating roll 3 at desired intervals therebetween and in the reverse shapes, and the roll 3 is brought into contact with the surface of a traveling cable 2 while ink is fed to the roll 3 so that both of the identification mark 4 and the length graduation 5 are simultaneously printed on the surface of the cable 2. Because simultaneous printing of the identification mark 4 and the length graduation 5 by the single rotating-roll 3 in this manner causes both marks 4, 5 to always keep the intervals carved on the peripheral plane of the rotating roll 3, mutual overlapping of both marks 4, 5 never occurs so that the identification mark 4 and the length graduation 5, both easily identifiable, can be put on the surface of the cable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of printing on the surface of a cable such as a communication cable.

(Prior Art) Conventionally, for example, identification marks such as the name of a manufacturing company and the date of manufacture are printed on the surface of a communication cable, or a length indication commonly called a length mark is printed.

By the way, when printing the identification mark, a rotating roll with an inverted shape of the identification mark etched on its circumferential surface is usually prepared, and ink is supplied to the roll while it is in contact with the surface of the running cable to print the identification mark. A method is used in which marks are repeatedly printed in the longitudinal direction of the cable.

On the other hand, when adding a length mark, the length mark is a length display such as 1, 2, -... -150, and the numbers to be printed increase in sequence, that is, change Therefore, a rotating roll such as the above-mentioned identification mark rotating roll that repeatedly prints the same mark cannot be used. Therefore, marker tape is supplied to the part where the convex numbers gradually change, and the tape is pressed against the cable surface by the convex number part to print the length display numbers, so-called length markers. This device is commonly used.

By the way, when it is desired to print both the identification mark and the length indication on the surface of the cable, the usual method is to first print the identification mark with a rotating roll at a position near the sheath extrusion coating machine, and then print the length mark with a length marker. Be taken.

[Problem to be solved by the invention]

However, in the case of the conventional method, the rotating roll for printing the identification mark and the length marker for printing the length display are separate devices as described above, and therefore are necessarily set at separate positions. As a result, even if the two marks are positioned so that they do not overlap at the start of printing, the printing interval between the two marks will gradually change due to the undulations of the cable itself and the unevenness of its surface, and in the worst case, the marks will overlap and the marks will not be read properly. There was a problem of being able to do it.

[Means to solve the problem]

The present invention has been made in view of such problems, and includes a method of printing an identification mark and a length scale on the surface of a running cable, in which an inverted shape of the identification mark and an inverted shape of the length scale are carved on the circumferential surface of the cable. The identification mark and the length scale are printed on the cable surface by rotating the rotating roll in contact with the cable surface while supplying ink to the circumferential surface of one rotating roll. .

In other words, do not display the identification mark and the length scale, in other words, the cable length with increasing numbers such as 1.2, -150, etc. , 51, 0, 5 replaced with a length scale consisting only of repeating numerical scales, etc., are engraved on the circumferential surface of one rotating roll at desired intervals and in an inverted shape. In this method, both an identification mark and a length scale are simultaneously printed on the cable surface by bringing this rotating roll into contact with the running cable surface and rotating it while supplying ink.

(Operation) When the identification mark and the length scale are printed at the same time using two rotating rolls in this way, both marks always maintain a predetermined interval, that is, the interval engraved on the circumferential surface of the rotating roll.
It never happens that the two marks overlap. Therefore, easily recognizable identification marks and length scales can be applied to the cable surface.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic diagram of essential parts showing an embodiment of the method of the present invention. As shown in this figure, in the method of the present invention, identification marks such as the name of the manufacturing company and the year of manufacture are inverted on the surface of the cable 2 where the sheath is applied to the cable core by the sheath extrusion coating machine 1, that is, on the sheath surface. A rotating roll 3 for printing on which a shape and an inverted shape of a length scale are engraved is brought into contact with the rotating roll 3, and the lower part of the rotating roll 3 is immersed in an ink storage tank 7 for printing while being rotated by a running cable.
At the same time, while preventing the cable from floating from the opposite side using a cable pressing roll 6 or the like, for example, an identification mark 4 and a length scale 5 as shown in FIG. 2 are printed on the surface of the cable.

In this example, length scales 5 are provided at intervals of 50 cm, so not only are the scales used, but also numbers such as 0.5, 0.5-, etc. are provided.

In this way, in the present invention, since the identification mark 4 and the length scale 5 are printed simultaneously by one printing rotating roll 3, the two marks 4 and 5 never overlap.

Therefore, problems such as overlapping marks that are difficult to read do not occur. Although it is not possible to determine the absolute length of the cable with only the length scale 5, for example, when cutting the cable 2 into 5 m, ion, etc. as necessary, the length can be easily confirmed with the length scale 5 mentioned above. It is possible and its utility value is high.

[Effects of the Invention] As described above, according to the method of the present invention, it is possible to prevent problems such as the identification mark printed on the surface of the cable and the length scale becoming unclear due to overlapping, and to make it clear and easy to read. Cables with identification markings and length scales can be provided.

[Brief explanation of the drawing]

FIG. 1 is a schematic view of a main part showing an embodiment of the method of the present invention, and FIG. 2 is a partial plan view of a cable showing an example of a cable obtained by the method of the present invention. 2 ~ Cable 3 ~ Rotating roll for printing 4 ~ Identification mark 5 ~ Length scale 7 ~ Ink storage tank

Claims (1)

[Claims] In a method of printing an identification mark and a length scale on the surface of a running cable, ink is supplied to the circumferential surface of one rotating roll that has an inverted shape of the identification mark and an inverted shape of the length scale carved on its circumferential surface. A method of printing on the surface of a cable, characterized in that the identification mark and length scale are printed on the surface of the cable by rotating this rotary roll in contact with the surface of the cable.