KR20030083067A - A making devices of a flexible pipe and the p.v.c. flexible pipe thereof - Google Patents

Abstract

PURPOSE: A manufacturing device of a flexible hollow pipe and the flexible pipe manufactured thereby are provided to display intrinsic color of hologram powder, and to prevent leak of hologram powder by injecting and adsorbing hologram powder to the flexible hollow pipe. CONSTITUTION: An extruding apparatus of a polyvinyl chloride string is composed of a hopper(10) embedding synthetic resin, a heating pipe(11) having a transfer screw(12), an extrusion die(13), a cooling passage(14) and a cutter(15). An air supply pipe(21) is installed by passing the extrusion die along a moving passage(20) communicated with the end of the heating pipe, and a supply hole is formed in the outer part of the air supply pipe. A supply screw is connected to a small hopper, and hologram powder is supplied through the supply screw to the air supply pipe. The hologram powder is adsorbed and fixed in a flexible hollow pipe(31).

Description

A manufacturing apparatus of a hollow flexible pipe, and a flexible pipe manufactured by the same, A MAKING DEVICES OF A FLEXIBLE PIPE AND THE P.V.C. FLEXIBLE PIPE THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flexible pipe manufacturing apparatus and a flexible pipe manufactured by using P.V.C. synthetic resin as a raw material for use in portable telephone cords, rope skipping ropes, and hoop pipes.

In general, portable telephone ropes and ropes for rope skipping are manufactured by extrusion of PVC resin as raw materials, and these ropes are used for the addition of the unique color or pigment of PVC resin. There is a drawback that the product is very monotonous only to express the generated color.

In order to eliminate this problem, a wire manufactured by extrusion molding by administering a hologram powder (aka glitter) to a PVC resin (PVC) is manufactured, which is shown in Figures 1 and 2 attached to the accompanying drawings. Likewise, the hologram powder 2 is irregularly distributed in the PVC synthetic resin string 1.

This line has many problems in the manufacturing process as well as the finished product manufactured.

First, the cord (1) made of PVC resin as described above is manufactured by mixing the PVC resin and hologram powder corresponding to the raw material. PVC resin is in the form of a fillet and must be manufactured by extrusion molding after gelation (GEL) while moving along the transfer screw of the heating tube in the hopper.

At this time, the hologram powder is made of a non-ferrous metal such as aluminum or a synthetic resin powder type, so that the hologram powder is burned by the heat applied while moving the heating tube and loses the original powder shape. There is a problem that the irregular surface protrudes on the surface of the file has a very rough surface of the finished product.

And since the hologram powder is exposed to the outside, the color comes out during use, and such a string is not hollow, and thus there is a problem requiring the use of more raw materials than the hollow type.

The present invention was created in order to eliminate these problems, minimizing the use of raw materials, while the hologram powder is located only inside the string while the hologram powder does not directly contact the heating tube, the splendor of the intrinsic color of the hologram powder It is to be displayed to the outside as it is through the vision, and also to prevent the hologram powder color from appearing during use since the hologram powder is not exposed to the surface of the string.

In order to achieve this object, the present invention achieves by adopting a method of manufacturing a string in the form of a hollow flexible pipe by introducing a holographic powder into the inside of the hollow flexible pipe through the air adsorption fixed to the inner surface of the hollow flexible pipe. Could.

1 is a reference perspective view of a conventional flexible file,

2 is an enlarged cross-sectional view of FIG. 1;

3 is a cross-sectional reference of the hollow flexible pipe according to the present invention,

4 is a cross-sectional configuration of FIG.

5 is a schematic view of a manufacturing apparatus of a hollow flexible pipe according to the present invention,

6 is a partial excerpt of the present invention device,

Figure 7 is another embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

1: P.V.C. Synthetic Resin Line 10: Hopper

11: heating tube 12: transfer screw

13: extrusion mold 14: cooling furnace

15: cutting machine 20: transfer furnace

21: air supply pipe 22: supply hole

23: small hopper 24: feed screw

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

Extrusion apparatus for producing a transparent string (1) made of a conventional PVC resin (PVC) is a hopper (10), a heating tube (11) with a feed screw (12) inside, an extrusion mold (13), In the cooling furnace 14 and the cutter 15,

An air supply pipe 21 penetrating through the moving path 20 connected in communication with the end of the heating tube 11 is installed to pass through the extrusion mold 13 from the outside, and the air supply pipe located at the outside ( The supply hole 22 is formed in 21 to provide a device having a structure in which a supply screw 24 connected to the small hopper 23 is connected.

Reference numeral 30, which is not described, refers to an air supply device such as an air compressor for supplying air to the air supply pipe 21.

Looking at the manufacturing process of the hollow flexible pipe 31 of the present invention according to the device of the present invention.

First, as in the manufacture of a conventional extruder, P.C. (PVC) synthetic resin, which is a raw material for manufacturing the hollow flexible pipe 31 of the present invention, is administered to the hopper 10 and passed through a heating tube 11. The transfer operation to transfer to the transfer screw 12 through the process of making the phase.

The gelled P. V. C. synthetic resin, which has undergone such a process, reaches the extrusion mold 13 through the moving furnace 20.

At this time, the gelated P.C. (PVC) synthetic resin is manufactured in the form of a hollow flexible pipe 31 while passing through the extrusion mold 13, which is the gelated P.C. Since the synthetic resin moves and is injected into the extrusion mold 13 along the air supply pipe 21 penetrating the moving path 20, the outer diameter of the air supply pipe 21 is finally the inner diameter of the hollow flexible pipe to be manufactured. The inner diameter of the extruded mold 13 becomes the outer diameter of the hollow flexible pipe.

In this way, the air generated through the air supply device 30 such as the air compressor is supplied to the air supply pipe 21, which is the gelated P. C. (PVC) synthetic resin of the extrusion mold 13 Although the hollow flexible pipe is maintained while passing through the end, the material is in the shape of a gel, and as a result, the inner diameter may be reduced as it is retracted.

In order to solve this problem, by supplying air through the air supply pipe 21, the hollow having the desired inner and outer diameter by being cooled through the cooling furnace 14 while maintaining the shape of the hollow flexible pipe by the air as it is It becomes possible to manufacture a flexible pipe.

The air generated through the air supply device 30 such as the air compressor is supplied to the air supply pipe 21 and the hologram powder 2 supplied to the small hopper 23 is supplied through the supply screw 24. It is forcibly supplied to the supply hole 22 formed in the supply pipe 21.

This hologram powder 2 is supplied to the inside of the air supply pipe 21 through the supply hole 22.

As such, the hologram powder 2 supplied into the air supply pipe 21 moves along the inside of the air supply pipe 21 by the air supplied to the air supply pipe 21 through the air supply device 30 as described above. Will be

This movement is discharged from the end of the air supply pipe 21 is attached to the inner surface, that is, the inner diameter surface of the hollow flexible pipe 31 that maintains the gel state already undergoing the manufacturing process.

In the case of supplying the hologram powder 2 through the air supply pipe 21, as shown in FIG. 7, the diffusion plate 21 ′ is installed at the end of the air supply pipe 21 to improve the flow of air. The hologram powder 2 can be easily adsorbed to the inner surface of the hollow flexible pipe 31 by hitting the diffuser plate 21 'and attracting it toward the outer side.

In this state, it is used to satisfy the intended use through cooling and cutting as described above.

This process results in the hologram powder 2 being non-ferrous metallic because the inherent color of the hologram powder 2 is calcined by heat or placed inside the hollow flexible pipe 31. Alternatively, even when using a synthetic pigment, the original shape of the hologram powder 2 is maintained as it is, so that the brilliant color emitted from the hologram powder 2 is visually exposed through the hollow flexible pipe 31, In addition, since the hologram powder 2 is located inside the hollow flexible pipe 31, problems of color development and coming out to the outside can be solved, and the surface of the hollow flexible pipe 31 is also very smooth. State can be maintained.

In addition, in the present invention, since the shape of the string is hollow, it is possible to reduce the amount of P. V.C. synthetic resin, which is a relatively raw material, so that the manufacturing cost can be economically reduced.

As described above, the hollow flexible pipe 31 manufactured by the apparatus of the present invention allows the hologram powder 2 to be adsorbed and fixed on the inner surface thereof, so that the hologram powder 2 is nonferrous metal or synthetic resin pigment. As can be seen, the hollow flexible pipe 31 according to the present invention is a mobile phone line, rope skipping line, a pipe for hulaup, etc., depending on the size of the extrusion mold 13 and the air supply pipe 21 to be manufactured. Of course it can be widely used in the use of.

And the above describes the manufacture of a hollow hollow flexible pipe through the PVC resin (PVC) resin, but this is to be used for the type of the PVC resin (PVC) synthetic resin to be used and the dosage mixing of the pigment to be used Of course, it is also possible to manufacture a hollow flexible pipe having a color in a transparent state.

As described above, the hollow flexible pipe according to the present invention is manufactured so that the holographic powder is positioned inside the hollow flexible pipe in a state where the holographic powder is not disturbed by heat or external physical conditions. The visual splendor of the interior can be made as it is, and the holographic powder is located inside the hollow flexible pipe, so it can solve the problem of color development and emergence to the outside even when used. Since the surface of the pipe can be kept very smooth, and the shape of the string is hollow, it is obvious that the invention is a very useful invention that can reduce the amount of PVC raw resin, which is a relatively raw material.

Claims (3)

An extrusion apparatus for manufacturing a string 1 from a conventional PVC composite resin includes a hopper 10 having a PVC composite resin and a transfer screw 12 therein. In the heating tube 11, the extrusion mold 13, the cooling furnace 14 and the cutter 15, An air supply pipe 21 is installed to pass through the extrusion mold 13 from the outside so as to pass along the moving path 20 connected in communication with the end of the heating tube 11, and the air supply pipe located at the outside. The supply hole 22 is formed in the 21 to connect the hologram powder 2 to the air supply pipe 21 through the supply screw 24 connected to the small hopper 23. Hollow flexible pipe manufacturing apparatus characterized in that. The method according to claim 1, Apparatus for manufacturing a hollow flexible pipe, characterized in that the holographic powder (2) moving along the air supplied by installing a diffusion plate (21 ') at the end of the air supply pipe 21 is discharged toward the side. Hollow flexible pipe, characterized in that the holographic powder (2) made of a structure that is fixed to the inner diameter of the hollow flexible pipe (31).