JPS5910415A - Manufacture of decorated pipe - Google Patents

Abstract

PURPOSE:To obtain easily a decorated pipe having uniform strength and uniform pattern, by providing previously a decorative pattern onto the surface of a metallic plate to be formed into a steel pipe by using rolls. CONSTITUTION:A metallic flat plate 11 is inserted between rotating rolls 12 to provide a decorative pattern onto the surface of the plate 11 by pressing the plate 11. Next, the decorated metallic plate 13 is fed to a metallic pipe manufacturing machine 14 to form it into a metallic pipe 15 by joining its both ends, and then the pipe 15 is cut into a prescribed length. Thus a decorated pipe having uniform strength and uniform pattern is obtained easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a decorative tube for stationery, sports equipment, handrails of stairs, etc., in which a pattern or the like is added to the surface of the metal tube.

Decorative tubes with patterns on the surface have traditionally been used for stationery, such as ballpoint pens and mechanical pencils.

These decorative tubes have their surfaces decorated by engraving, etching, pressing, or other methods, and are used for decoration.

In the conventional manufacturing method for decorative pipes, as shown in FIG. Short metal tubes 5 were obtained by cutting, and then the surface of each of these metal tubes 5 was decorated one by one using means such as a press (not shown) or engraving. Conventionally, this method had the following drawbacks.

(1) First of all, when decoration is done by engraving, it goes without saying that each metal tube is carved by hand or machined, which takes a lot of time and cost, and is not suitable for mass production. On top of that,
When engraving, the surface of the metal tube is scraped off with a chisel, so the strength of the surface of the metal tube becomes uneven, and as a result, the strength of the metal tube becomes weaker. It has the disadvantage of being easily broken, and its use is limited. In the worst case scenario, a hole could be made in the metal tube due to a mistake during engraving. This method also has the disadvantage that it is difficult to obtain a uniform pattern.

(2) Another method is to use a press, but this method requires large-scale equipment, increases the cost of the entire mold, and takes time to press each piece.
Moreover, it was nearly impossible to press the metal tube.

In addition, since pressing is performed directly on the surface of the metal tube, complex patterns cannot be pressed, and if the thickness of the metal tube changes, etc., it is not possible to respond quickly to the change, and the entire decoration or mold must be changed. There was also the inconvenience of not being able to do without it.

Also, etching and other methods have similar drawbacks. was.

In short, in the conventional method, decorations were applied to the surface of each metal tube after cutting, which caused technical difficulties and required a great deal of time, labor, and cost. Furthermore, it was difficult to obtain a uniform pattern, and it was not possible to decorate long metal tubes.

The present invention eliminates the drawbacks of the conventional metal tube manufacturing method, and by decorating a flat metal plate in advance and manufacturing the decorative plate into a metal tube, it is possible to maintain a constant strength of l~
It is an object of the present invention to provide a method for manufacturing a decorative tube, which is capable of producing a decorative tube with a uniform pattern in a short period of time, with ease and with low wear.

Next, the flow side of the present invention will be explained based on the drawings.
As shown in FIG. 2, a flat metal plate 11 is cut into a predetermined width, and a pattern 20 is applied to the surface of the metal plate 11 by a roll 12. As shown in FIG. In this case, unlike the conventional method of pressing a metal tube, the strength of the material is not weakened, and complex patterns can be easily and quickly applied without much effort.

Instead of a press, the roll 12 presses the metal plate 11 with two rotating rollers 12a and 12b to apply a pattern formed on the surface of one of the rollers 12a or 12b to the surface of the metal plate 11.

After that, this metal plate 13 is transferred to the metal tube manufacturing machine 1 which is the next process.
4, both ends of the metal plate 13 are joined and welded to form a single metal tube 15, which is then cut into a desired length by a cutting machine 16.

As described above, according to this embodiment, a long decorative pipe with stable strength can be easily obtained. Also, even if the diameter and wall thickness of the pipe are changed, the same roller 1 used for roll 12 during the process
2a and 12b, it is possible to easily produce decorative pipes with different diameters and wall thicknesses.

Therefore, according to this embodiment, conventional stationery such as a sol pen fd: Of course, 4. * Decorative pipes that are long and have great strength, such as golf shafts, can be installed with simple technology and low cost and labor, and can also be used to install large diameter pipes such as pillars in trains and handrails on stairs. , thick metal tubes 1 (1) can also be easily decorated.The decorations added to the sills of these stairs not only give a sense of beauty but also have the effect of making them easier to slide down.

Furthermore, this embodiment can be used in a wide range of applications because complex patterns and characters, such as the name of the manufacturer, can be easily attached to the surface of the metal tube.

As described above, according to the present invention, it is possible to easily obtain a large quantity of decorative pipes with a uniform pattern and constant strength within a short period of time and with low wear.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory diagram of a conventional method, FIG. 2 is an explanatory diagram, FIG. 3 is a partially enlarged diagram of a decorated metal plate, and FIG. It is a partially enlarged view of a decorative pipe. 1.11...Metal plate, 12...Roll, 13...
Metal plate, 14... Metal tube manufacturing machine, 15.17... Decorative tube. Patent Applicant: Tomiji T. Isao Kusan Kogyo Co., Ltd. Fuyo Tsusho Co., Ltd. Agent Patent Attorney 1) Junior High School 2nd Department

Claims (1)

[Claims] A method for manufacturing a decorative tube, which comprises applying decoration to the surface of a metal plate using a roll, and then forming the metal plate into a metal tube.