KR20080102747A - Wave pipe manufacturing method of a wave pipe shutter - Google Patents

Abstract

A bent pipe manufacturing method of a bent pipe shutter is provided to manufacture bent pipe without processing defect using thickness stainless. An inside filler(14) is inserted inside the outer pipe(12) consisting of the stainless to the longitudinal direction. An outer pipe in which the inside filler is inserted is inflected in the vending unit and it manufactures with the bent pipe. The inside filler is the plastic material including the rubber or urethane etc.,, the wire or the iron wire, and 'he round rod of the nonferrous material including the iron material or aluminum etc. It injects the raw material of the liquid state inside the outer pipe and the inside filler of the plastic material is filled by cooling method.

Description

Wave pipe manufacturing method of a wave pipe shutter

1 is a block diagram showing a general curved pipe shutter,

2 is an elevation view showing a bent pipe of a bent pipe shutter manufactured according to a conventional manufacturing method;

Figure 3 (a) to (c) is a process chart showing a bending pipe manufacturing method of the bent pipe shutter according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: bend pipe 12: stainless steel outer pipe

14: internal filler

The present invention relates to a bent pipe manufacturing method of the bent pipe shutter.

The curved pipe shutter is a retractable security shutter that improves the shortcomings of slat shutters and straight pipe shutters, and is widely used in shopping malls, houses, underpasses and subways.

The conventional curved pipe shutter is a structure in which joint joints are connected and assembled at each connection portion of a bending pipe and a straight pipe, as shown in FIG. 1 (see Korean Utility Model Publication No. 1993-0023820), and a bending The pipe 1 is machined to have a bending shape that is continuously repeated by a bending machine, and the plurality of bent pipes 1 formed in this way have a first portion at each part where the various parts are located in close proximity to each other so as to be arranged to face each other. The joint pipe 2 is connected to each other, and the bent pipe 1 is positioned to face each other so that the straight pipe 3 is mediated so that the second joint ring 4 is positioned close to each other. The upper and lower portions of the curved pipe 1 and the straight pipe 3 connected up and down by the first and second joining rings 2 and 4, that is, not shown. Upper and lower mouths A third joint ring 5 is provided every pitch between the upper plate 6 fixed to the end and the lower plate 6 'installed to finish the lower side of the shutter.

The bent pipe 1 and the straight pipe 3 are made of stainless steel with a beautiful appearance and no corrosion. The straight pipe 3 may not be provided.

The bending pipe 1 is manufactured by bending a straight pipe in a bending machine, which is disclosed in Korean Patent Publication No. 199-0002002.

By the way, the bent pipe (1) is manufactured by bending expensive stainless materials, so using a thick material (stainless steel) will cost a lot of manufacturing costs. In order to reduce manufacturing costs, it is proposed to bend the bending machine using a thin material (stainless steel material), but when a straight pipe made of a thin material (stainless steel material) is bent in the bending machine, as shown in FIG. There was a problem that the joint motion was not smoothly performed in the joint rings 2, 4, and 5 due to the processing defect that the bending groove 1a is formed in the bone and the flat surface 1b is formed in the peak. .

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to provide a bending pipe manufacturing method of the bent pipe shutter can be used to produce a bending pipe without processing defects while using a thin stainless steel raw material. There is.

The bending pipe manufacturing method of the bent pipe shutter according to the present invention for achieving the above object is, in the bending pipe manufacturing method of the bent pipe shutter to bend the pipe made of stainless material by bending in a bending machine, the stainless steel material After inserting the inner filler in the longitudinal direction inside the outer pipe of the, characterized in that the outer pipe is inserted into the inner pipe is bent in a bending machine to produce a bent pipe.

The internal filler may be a synthetic resin such as rubber or urethane, a round bar of a wire or iron wire, a non-ferrous material such as aluminum, or the like.

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

As shown in FIG. 3 (c), the bent pipe 10 manufactured by the present invention is a reinforcement pipe in which the inner filler 14 is inserted into the outer pipe 12.

The outer pipe 12 is a stainless steel pipe that is beautiful in appearance and free of corrosion such as rust, and the inner filler material 14 is made of a synthetic resin material such as rubber or urethane, wire or iron wire, iron material, or nonferrous material such as aluminum. Round bars are used.

The inner filler of the synthetic resin material may be filled by a method of cooling by injecting a liquid raw material into the outer pipe.

As shown in FIG. 3A, the bent pipe 10 prepares an outer pipe 12 and an inner filler 14 made of stainless steel, and has an inner filler material in a longitudinal direction inside the outer pipe 12. After inserting and filling (14) (see FIG. 3 (b)), if the outer pipe 12 into which the inner filler 14 is inserted is bent in a known bending machine, the outer pipe of stainless steel is supplemented with strength, and FIG. As shown in (c) of FIG. 5, the defect-free bending pipe 10 is completed.

Since the bending machine and the pipe bending method using the same are disclosed in Korean Patent Laid-Open Publication No. 1993-0002002, detailed descriptions thereof will be omitted.

As the bent pipe of the bent pipe shutter manufactured as described above can reduce the thickness of the expensive external pipe made of stainless steel, the manufacturing cost is remarkably reduced, and no joint defects occur during bending processing, so that joint motion by the joint ring is also smooth. As a result, there is no problem in raising and lowering of the pipe shutter.

According to the bent pipe manufacturing method of the bent pipe shutter according to the present invention, it is possible to produce a bent pipe without processing defects while using a thin stainless steel raw material, the manufacturing cost of the bent pipe shutter is significantly reduced.

Claims (3)

In the bending pipe manufacturing method of the bent pipe shutter for manufacturing a pipe made of stainless material by bending in a bending machine to bend pipe, Insert the inner filler in the longitudinal direction to the inside of the stainless steel outer pipe, Bending pipe manufacturing method of the pipe-type shutter, characterized in that the inner pipe is inserted into the outer pipe is inserted into the bending pipe by bending. The method according to claim 1, The internal filler is a bending pipe manufacturing method of a curved pipe shutter, characterized in that using a synthetic resin material. The method according to claim 2, The inner filler of the synthetic resin material is a flexible pipe manufacturing method of the curved pipe shutter, characterized in that the filling of the raw material in the liquid state by filling the inside of the outer pipe to cool.

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