KR101670396B1 - Hose connection manifold and the fuel supply hose manufacturing method of automatic gas cutting machine using the same - Google Patents

Hose connection manifold and the fuel supply hose manufacturing method of automatic gas cutting machine using the same Download PDF

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Publication number
KR101670396B1
KR101670396B1 KR1020150154150A KR20150154150A KR101670396B1 KR 101670396 B1 KR101670396 B1 KR 101670396B1 KR 1020150154150 A KR1020150154150 A KR 1020150154150A KR 20150154150 A KR20150154150 A KR 20150154150A KR 101670396 B1 KR101670396 B1 KR 101670396B1
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KR
South Korea
Prior art keywords
hose
connection portion
pressure oxygen
pin
hose connection
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Application number
KR1020150154150A
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Korean (ko)
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전이범
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전이범
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/14—Making machine elements fittings
    • B21K1/16—Making machine elements fittings parts of pipe or hose couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K7/00—Cutting, scarfing, or desurfacing by applying flames
    • B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

The present invention relates to a hose connecting branch and a hose for fuel supply of an automatic gas cutting machine using the same, and it is provided by a method capable of producing a special branch method, The flexible hose is made of flexible metal pipe covered with metal mesh or a flexible hose covered with metal mesh. The gas hose, the high-pressure oxygen tube and the low-pressure oxygen tube This makes it possible to quickly and easily make the fuel supply hose of the automatic gas cutting machine inserted and installed with three flexible metal pipes so as to prevent twisting or tangling of lines during welding or cutting operation, The gas tube and the high-pressure oxygen tube provided inside the three flexible metal tubes and the low- Zoom in to the life of the equipment so that the fear of damaging the small tubes, as well as peace of mind to everyone to prevent the occurrence of safety accidents and based its purpose as the party giving by allowing engage in welding or cutting operations.
In order to accomplish the above object, the present invention provides a method of manufacturing a hose connecting branch, comprising: preparing a cylindrical metal tube 100 by cutting a metal pipe made of copper, aluminum or an alloy thereof to a predetermined length;
The cylindrical metal tube 100 is mounted in the metal mold and heated or expanded according to the material of the cylindrical metal tube 100 so as to facilitate expansion and contraction or in a state in which the cylinder metal pipe 100 is not heated, A pin 111 and a pin 112 for forming a gas hose connection portion and a pin 113 for forming a high-pressure oxygen hose connection portion and a pin 114 for forming a low-pressure oxygen hose connection portion are inserted into a triangular shape The outer surface of the cylindrical metal tube 100 corresponding to the gap between the pin 112 for forming the gas hose connection portion, the pin 113 for forming the high-pressure oxygen hose connection portion and the pin 114 for forming the low-pressure oxygen hose connection portion, Pressure hose connection portion 103 and a low-pressure oxygen hose connection portion 104 are formed on the other side of the hose connection portion 102. The gas hose connection portion 102, the high-pressure oxygen hose connection portion 103, 3 minutes stage of manufacturing the engine (100 ') and,
The three-branch pipe 100 'is separated from the mold, and a pin 111 for forming an outer-line integrated connection hose connection portion, a pin 112 for forming a gas hose connection portion, a pin 113 for forming a high-pressure oxygen hose connection portion, And removing the connecting-part forming pin 114. [0034] As shown in FIG.
In addition, the fuel supply hose of the automatic cutter of the present invention is basically composed of two outer connecting rods 101 (101 ') formed on one side of two three-branch pipes 100' manufactured by the above- A flexible metal pipe which is cut and coated to have a predetermined length and a flexible hose which is covered with a metal mesh and which is connected to both ends of the outer string integrated connection hose 130 and the outer surface of the inlet 101a of the outer string integrated connection hose connection portion 101, So that the outer-row unified hose 130 is connected so as not to be disconnected,
Three flexible metal tubes 140 are inserted into the outer line integrated connection hose 130 so as to be discharged to the outside of the three branch pipes 100 'on both sides and then the gas tubes 141 are inserted into the three flexible metal tubes 140, The high pressure oxygen tube 142 and the low pressure oxygen tube 143 are inserted and fixed to the flexible metal pipe 140 by using the ground connection port 150, respectively.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a branch pipe for connecting a hose, and a fuel supply hose for an automatic gas cutting machine using the same,

The present invention relates to a method of manufacturing a branch pipe for connecting a hose and a hose for supplying fuel to an automatic gas cutting machine using the same. More particularly, the present invention relates to a method of manufacturing a three-branch pipe, Connect flexible hose made of flexible metal tube or flexible hose with metal mesh inside. Connect flexible hose with three flexible metal pipes with gas tube, high-pressure oxygen tube and low-pressure oxygen tube inside the hose. This makes it possible to quickly and easily make the fuel supply hose of the automatic gas cutting machine inserted and installed so as to prevent twisting or tangling of the wire during welding or cutting,

The gas tube, the high-pressure oxygen tube and the low-pressure oxygen tube installed inside the three flexible metal tubes can be prevented from being damaged by sparks or other external impacts, thereby prolonging the service life and preventing safety accidents And a hose for supplying fuel to an automatic gas cutting machine using the same.

Generally, an automatic gas cutting machine is a device that dissolves a workpiece by melting heat generated by combustion of a fuel gas such as hydrogen, acetylene, or liquefied natural gas (LPG), and fuses the melted portion of the workpiece with a high or low pressure It is a device for blowing oxygen and blowing off the workpieces. It has a torch where the gas flame is discharged. The metal flame is preheated by the gas flame coming from the torch, and oxygen is supplied to supply oxygen at high speed when the temperature reaches 800 to 900 ° C. A supply nozzle is provided. Oxygen and gas, which are the fuels of oxygen cutting, are stored in the respective storage tanks in a compressed state, and are supplied to the soil through the gas hose, the high-pressure oxygen hose, and the low-pressure oxygen hose, respectively, so as to be sprayed at high speed or low speed.

Such an automatic gas cutting machine is a machine that automatically cuts a steel plate into a straight line, a curved line, a circle, or any other arbitrary shape, and is widely used because its cutting surface is clean and the cutting speed is fast.

Automatic Gas Cutting Machine is a patented application No. 2007-0108115 entitled "Automatic Gas Cutting Machine" and patent application No. 2012-0098041 "Improvement angle automatic cutting device" and utility model application No. 1987-0012472 "Automatic cutting machine modified by twin- And the like.

1 to 2 are actual photographs of an automatic gas cutting machine manufactured in various forms.

1 and 2, the connection state of the fuel supply hose 10 connected to the soil connection port 14 in the soil 20 provided in the automatic gas cutting machine is shown in FIG. 1 and FIG. 2, A gas hose 11 for supplying a fuel gas such as liquefied natural gas (LPG), a high-pressure oxygen hose 12 for supplying oxygen at a high pressure, and a low-pressure oxygen hose 13 for supplying oxygen at a low pressure, And is connected to the oocyte (20).

The gas hose 11, the high-pressure oxygen hose 12, and the low-pressure oxygen hose 13 are all made of a rubber hose.

Accordingly, when the number of the soil 20 is increased and the number of connection of the hoses is increased or the hoses are to be connected long, the gas hose 11, the high-pressure oxygen hose 12 and the low- Since the work is done in three strands, each hose is twisted to each other, so that the cutting operation is stopped and the twisted hoses are released one by one. Since hoses are frequently applied to the automatic cutting device during the movement, There is a problem that the efficiency is lowered.

In addition, since the gas hose 11, the high-pressure oxygen hose 12 and the low-pressure oxygen hose 13 are separated into three strands, troubles such as the necessity of arranging the lines after the cutting operation or cutting operation, And there was a discomfort of the worker.

 On the other hand, the gas hose 11, the high-pressure oxygen hose 12, and the low-pressure oxygen hose 13 are damaged by the moving wheels or rails of the automatic cutting device during the cutting operation and the automatic cutting device falls or stops while being caught by the hose There is a problem that the work may be delayed because the robot does not operate properly in a state of being out of the set path and the like.

The gas hose 11, the high-pressure oxygen hose 12, and the low-pressure oxygen hose 13 are made of rubber, so that they are hardened when they are used for a long time and the surface is cracked. There is a risk that a fire or explosion may occur due to exposure to a flame generated by the fire.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems,

It is possible to manufacture a three-branch pipe by providing it as a method that can produce a special branch pipe, and a flexible metal pipe which is covered with the two pipes of the three pipes or a flexible hose which is covered with a metal pipe is used Connect the hose to the hose by connecting the hose of the outside line to the hose of the outside line. The hose for fuel supply of the automatic gas cutter is installed quickly and easily by inserting three flexible metal pipes with gas tube, high pressure oxygen tube and low pressure oxygen tube inside. By creating and providing it,

It is necessary to prevent twisting or tangling of lines during welding or cutting,

The gas tube, the high-pressure oxygen tube and the low-pressure oxygen tube installed inside the three flexible metal tubes can be prevented from being damaged by sparks or other external impacts, thereby prolonging the service life and preventing safety accidents So that everyone can rest assured that they can work on welding and cutting work.

According to another aspect of the present invention, there is provided a method for manufacturing a hose connecting branch, comprising: preparing a cylindrical metal tube by cutting a metal pipe made of copper, aluminum, or an alloy thereof to a predetermined length; Wow;

A cylindrical metal tube is mounted in a mold and heated or expanded according to the material of the cylindrical metal tube to facilitate expansion and contraction or in a non-heated state, a pin for forming an outer line integrated connection hose connection part is inserted into one end of the cylindrical metal tube, A hose connecting portion forming pin, a high pressure oxygen hose connecting portion forming pin, and a low pressure oxygen hose connecting portion forming pin are spaced apart from each other by a predetermined distance in a triangular shape, a pin for forming a gas hose connecting portion, a pin for forming a high pressure oxygen hose connecting portion, The outer surface of the cylindrical metal pipe corresponding to the oxygen hose connection forming pin is compressed by the compression pin, and one side is formed with the connection line of the integrated hose connection line and the other side is formed with the three-way gas hose connection, the high pressure oxygen hose connection and the low pressure oxygen hose connection. A step of manufacturing a divisional engine,

Removing the three-branch pipe from the mold and removing the pins for forming the outer-line integrated connection hose connection portion, the pins for forming the gas hose connection portion, the pins for forming the high-pressure oxygen hose connection portion, and the pins for forming the low-pressure oxygen hose connection portion. .

In order to accomplish the above-mentioned object, the fuel supply hose of the automatic gas cutting machine of the present invention is basically formed by connecting the respective outer-line integrated connection hose connection portions formed on one side of the two three- A flexible metal pipe cut into a predetermined length and covered with a flexible metal hose and a flexible hose having a metal mesh on the inner side are connected to both ends of the integrated hose connection line and the outer line integrated hose connection hose having an expanded inlet is squeezed, Connect it so that it does not fall out,

Three flexible metal pipes are inserted into the outer line integrated connection hose so as to be discharged to the outside of the three divided pipes on both sides and then a gas tube, a high-pressure oxygen tube and a low-pressure oxygen tube are inserted into three flexible metal pipes, And fixedly fastened to the flexible metal pipe by using the above-

In the present invention, on both sides of each flexible metal tube, a coating layer having different colors is further formed so as to identify whether the gas tube, the high-pressure oxygen tube, and the low-pressure oxygen tube are connected, You can.

In the method for manufacturing a hose connection branch pipe of the present invention, a single metal pipe made of copper, aluminum or an alloy thereof is cut to a predetermined length to form a cylindrical metal pipe, and an outer line integrated connection hose connection portion is formed on one side thereof, It is possible to quickly and easily manufacture the three-branch gas hose connection, the high-pressure oxygen hose connection and the low-pressure oxygen hose connection,

At the same time, the gas hose connection portion, the high-pressure oxygen hose connection portion, and the low-pressure oxygen hose connection portion are connected to each other, so that the structure is very robust.

In manufacturing the hose for fuel supply of the automatic gas cutting machine of the present invention, a flexible metal pipe covered with three flexible metal pipes in which a gas tube, a high-pressure oxygen tube and a low-pressure oxygen tube are inserted is provided, or a flexible hose It is possible to easily connect and connect three hoses in a state where they are separated by a predetermined distance from each other by means of the three branching orifices in the inside of the manufactured outer hose integrated connecting hose.

The fuel supply hose of the automatic gas cutting machine has a coating color layer of different colors so that the state of whether a gas tube, a high-pressure oxygen tube, or a low-pressure oxygen tube is connected to the inside of the flexible metal tube is formed Each gas tube, high-pressure oxygen tube, and low-pressure oxygen tube can be connected to the correct position of the toe in the automatic gas cutter.

In addition, since three lines of flexible metal pipe are inserted into the outer line integrated connection hose which is covered, there is no line twisting or tangling during use and no gas tube, high pressure oxygen tube and low pressure oxygen tube are connected to the inside of the flexible metal tube So that there is no risk that the tubes will be damaged by sparks or other external factors during operation.

Therefore, by using the hose for fuel supply of the automatic gas cutting machine, it is possible to perform the cutting work safely and conveniently for a long period of time because there is no risk of accident and safety accident at all.

Figs. 1 to 2A are photographs of an automatic gas cutting machine capable of checking the connection state between a gas hose, a high-pressure oxygen hose, and a low-pressure oxygen hose.
Figure 2b is a view of an automatic gas cutter.
FIGS. 3A to 3D are views showing a manufacturing process of a hose connecting branch according to the present invention,
3A is a perspective view showing a cylindrical metal pipe formed by cutting a metal pipe to a predetermined length.
3B is a state in which a cylindrical metal tube is mounted on a metal mold and each of the processing pins is engaged.
3C is a state in which a tip of a cylindrical metal tube is compressed by a compression pin to fabricate a three-branch tube.
FIG. 3D is a state in which the inlet of the connecting line connecting the outer rope formed in the branch pipe is enlarged.
Fig. 4 is a view showing a constitutional state of a fuel supply hose of an oxygen cutter manufactured using a three-branch engine of the present invention. Fig.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the exemplary embodiments described below are provided for illustrative purposes only, and that the present invention may be embodied with various modifications and alterations. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention. In addition, the attached drawings are not drawn to scale in order to facilitate understanding of the invention, but the dimensions of some of the components may be exaggerated.

TECHNICAL FIELD The present invention relates to a method of manufacturing a branch pipe for connecting a hose and a fuel supply hose of an automatic gas cutting machine manufactured using the three-branch pipe manufactured by the method.

First, a method for manufacturing a hose connecting branch will be described.

In the method of manufacturing a branch pipe for connecting a hose according to the present invention, firstly, a step of preparing a cylindrical metal pipe 100 by cutting a metal pipe made of copper, aluminum or an alloy thereof to a predetermined length is performed.

Then, the cylindrical metal tube 100 is mounted in a metal mold (not shown), which is heated according to the material of the cylindrical metal tube 100 to facilitate expansion and contraction or in a non-heated state inside one end of the cylindrical metal tube 100 The inner hose connection hose connecting portion forming pin 111 is inserted and the other end portion of the inner hose connecting pin forming pin 112, the high pressure oxygen hose connecting portion forming pin 113 and the low pressure oxygen hose connecting portion forming pin 114 are connected to each other And is inserted between the pin 112 for forming the gas hose connection part and the pin 113 for forming the high pressure oxygen hose connection part and the pin 114 for forming the low pressure oxygen hose connection part, And the other side is provided with a gas hose connecting part 102, a high-pressure oxygen hose connecting part 103 and a low-pressure hose connecting part 103. The gas hose connecting part 102 and the high-pressure oxygen hose connecting part 103 are connected to each other, A step of manufacturing a three-branch pipe 100 'in which the oxygen hose connection portion 104 is formed should be performed.

At this time, before the compression bonding, the pins 112 for forming the gas hose connection portion, the pins 113 for forming the high-pressure oxygen hose connection portion and the pins 114 for forming the low-pressure oxygen hose connection portion are spaced apart from each other It would be good if the spacers were installed and then squeezed.

Thereafter, the three-branch engine 100 'is separated from the mold, and the pin 111 for forming the outer-string integrated connection hose connection portion, the pin 112 for forming the gas hose connection portion, the pin 113 for forming the high-pressure oxygen hose connection portion, And removing the hose connecting part forming pins 114, respectively.

In this case, the inlet 101a of the outer-row integrated connecting hose connecting portion 101 on one side of the three-branch pipe 100 'is expanded to facilitate insertion of the outer-row integrated connecting hose 130, A plating process may be further performed to prevent corrosion of the substrate and to improve appearance.

In the method of manufacturing a hose connecting branch pipe according to the present invention, a single metal pipe made of copper, aluminum, or an alloy thereof is cut to a predetermined length to form a cylindrical metal pipe 100, It is possible to quickly and easily manufacture the three-branch pipe 100 'in which the connecting portion 101 is formed and the gas hose connecting portion 102, the high-pressure oxygen hose connecting portion 103 and the low-pressure oxygen hose connecting portion 104 are formed on the other side have.

The gas hose connection part 102, the high-pressure oxygen hose connection part 103 and the low-pressure oxygen hose connection part 104 are connected to each other, so that they are structurally very robust, and each gas hose connection part 102 and the high- The three flexible metal pipes 140 in which the gas tube 141, the high-pressure oxygen tube 142, and the low-pressure oxygen tube 143 are installed later can be easily inserted through the low-pressure oxygen hose connection part 104 and the low-

Hereinafter, a fuel supply hose for an automatic gas cutting machine manufactured using the three-branch engine 100 'manufactured in the above-described manner will be described.

In order to manufacture the fuel supply hose of the automatic gas cutting machine of the present invention, each of the outer-row unified hoses (100) formed on one side of the two three-branch pipes (100 ') manufactured by the above- A flexible metal pipe cut into a predetermined length and cut to a predetermined length in a connection portion 101 or a flexible hose made of a flexible hose having a metal net covered therein is connected to both ends of an integrated line connection hose 130 and an inlet 101a is expanded, The outer surface of the connection portion 101 is compressed so that the outer-joint-connection hose 130 is disconnected.

Three flexible metal pipes 140 are inserted into the outer line integrated connection hose 130 so as to be discharged to the outside of the three branch pipes 100 'on both sides of the flexible metal pipe 140, Pressure oxygen tube 142 and a low-pressure oxygen tube 143 are inserted into the tube 141, and then fixed to the distal end of the flexible metal tube 140 by using the ground connection port 150, respectively.

In order to check whether the gas tube 141, the high-pressure oxygen tube 142, and the low-pressure oxygen tube 143 are connected to the inside of the flexible metal tube 140, It is ideal to further form the coloring layer 160. In addition to the coating color layer 160, various other identification means may be used.

The gas tube 141, the high-pressure oxygen tube 142, and the low-pressure oxygen tube 143 may be made of various materials. However, in case of the gas tube 141, when the torch overheats during cutting and welding, It is most preferable to use a Teflon tube because it may cause an explosion if it is melted and ignited. It is also possible to use a Teflon tube in the case of the high-pressure oxygen tube 142 or the low-pressure oxygen tube 143 It is ideal to use a nylon tubing that is low in cost and capable of fulfilling its role.

The fuel supply hose of the automatic gas cutting machine of the present invention is basically composed of three flexible metal tubes 140 in which a gas tube 141, a high-pressure oxygen tube 142 and a low-pressure oxygen tube 143 are inserted, The three-branch pipe 100 'is inserted into the outer-row integrated connection hose 130, which is made of a metal pipe or a flexible hose having a metal mesh on the inside thereof, so as to be spaced apart from each other by a predetermined distance. It is very easy to do,

The opposite ends of the flexible metal tube 140 are coated with a coating color layer having different colors so as to check whether the gas tube 141, the high-pressure oxygen tube 142, and the low- The gas tube 141, the high-pressure oxygen tube 142, and the low-pressure oxygen tube 143 can be connected to the precise positions of the toe teeth of the automatic gas cutter.

 Since the three rows of flexible metal pipes 140 are inserted into the outer rope integrated connection hose 130 which is covered with the rope, there is no twist or entanglement of the rope during use,

The gas tube, the high-pressure oxygen tube and the low-pressure oxygen tube are both inserted into the flexible metal tube, so that there is no fear that the tubes will be damaged by spattering or other external factors during operation. You can use it for a long time because there is no fear of it happening at all.

As described above, the present invention has been described by reference to the preferred embodiments and drawings, but it should be understood that the present invention is not limited to these embodiments, and various changes and modifications may be made without departing from the spirit and scope of the present invention by those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

100: Cylindrical metal pipe 100 ': Three branch pipes
101: Outer line integrated connection hose connection part 101a: Entrance
102: Gas hose connection part 103: High pressure oxygen hose connection part
104: Low pressure oxygen hose connection 111: Inner line connection hose connection forming pin
112: pin for forming gas hose connection part 113: pin for forming high pressure oxygen hose connection part
114: pin for forming low pressure oxygen hose connection part 120:
130: outer rope integrated connection hose 140: flexible metal pipe
141: gas tube 142: high-pressure oxygen tube
143: Low-pressure oxygen tube 150:
160: Coat color layer

Claims (4)

Preparing a cylindrical metal tube 100 by cutting a metal pipe made of copper, aluminum, or an alloy thereof to a predetermined length;
The cylindrical metal tube 100 is mounted in the metal mold and heated or expanded according to the material of the cylindrical metal tube 100 so as to facilitate expansion and contraction or in a state in which the cylinder metal pipe 100 is not heated, A pin 111 and a pin 112 for forming a gas hose connection portion and a pin 113 for forming a high-pressure oxygen hose connection portion and a pin 114 for forming a low-pressure oxygen hose connection portion are inserted into a triangular shape The outer surface of the cylindrical metal tube 100 corresponding to the gap between the pin 112 for forming the gas hose connection portion, the pin 113 for forming the high-pressure oxygen hose connection portion and the pin 114 for forming the low-pressure oxygen hose connection portion, Pressure hose connection portion 103 and a low-pressure oxygen hose connection portion 104 are formed on the other side of the hose connection portion 102. The gas hose connection portion 102, the high-pressure oxygen hose connection portion 103, Step 3 minutes to produce an engine (100 ') and,
The three-branch pipe 100 'is separated from the mold, and a pin 111 for forming an outer-line integrated connection hose connection portion, a pin 112 for forming a gas hose connection portion, a pin 113 for forming a high-pressure oxygen hose connection portion, And removing the connecting part forming pin (114). The inlet 101a of the connecting rope 101 of the outer rope connecting hose 101 on one side of the three-branch pipe 100 'manufactured by the method of the first embodiment is enlarged to facilitate insertion of the outer rope connecting hose 130, Further comprising the step of plating to prevent corrosion of the engine (100 ') and to make the appearance more beautiful. A flexible metal pipe cut into a predetermined length and coated on each of the outer-string integrated connection hose connection portions (101) formed on one side of two three-branch pipes (100 ') manufactured by the method of the first or second aspect, And the outer rope integrated connection hose 130 is connected to the outer rope integrated connection hose connection portion 101 by pressing the outer surface of the inlet 101a of the outer rope integrated connection hose connection portion 101,
Three flexible metal tubes 140 are inserted into the outer line integrated connection hose 130 so as to be discharged to the outside of the three branch pipes 100 'on both sides and then the gas tubes 141 are inserted into the three flexible metal tubes 140, And a high pressure oxygen tube (142) and a low pressure oxygen tube (143) are inserted into the flexible metal tube (140), respectively, and then fixed to the flexible metal pipe (140) by using a ground connection port (150). The method of claim 3,
The flexible metal tube 140 is coated with a coating color layer 160 having different colors so that the gas tube 141, the high-pressure oxygen tube 142, and the low-pressure oxygen tube 143 are connected to each other, ) Is formed on the outer circumferential surface of the hose.
KR1020150154150A 2015-11-03 2015-11-03 Hose connection manifold and the fuel supply hose manufacturing method of automatic gas cutting machine using the same KR101670396B1 (en)

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KR1020150154150A KR101670396B1 (en) 2015-11-03 2015-11-03 Hose connection manifold and the fuel supply hose manufacturing method of automatic gas cutting machine using the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102347313B1 (en) * 2020-12-08 2022-01-04 전이범 Hose connection structure for fuel supply of oxygen cutting machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5844932A (en) * 1981-09-11 1983-03-16 Toyota Motor Corp Manufacture of outer ring of universal joint
JP2005083730A (en) * 2003-09-10 2005-03-31 Atago Seisakusho:Kk Pipe type heat exchanger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5844932A (en) * 1981-09-11 1983-03-16 Toyota Motor Corp Manufacture of outer ring of universal joint
JP2005083730A (en) * 2003-09-10 2005-03-31 Atago Seisakusho:Kk Pipe type heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102347313B1 (en) * 2020-12-08 2022-01-04 전이범 Hose connection structure for fuel supply of oxygen cutting machine

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