KR100853454B1 - High-frequency resistance heating machine for welding pipe - Google Patents

Abstract

A high-frequency heating apparatus for welding copper pipes is provided to improve operational convenience, safety and productivity by joining two copper pipes with a copper pipe connecting unit to weld the copper pipes, thereby performing a welding operation promptly and conveniently and securing welding conditions that are always stable and uniform irrespective of working conditions. A high-frequency heating apparatus for welding copper pipes comprises: a high frequency oscillator(200) for generating high frequency; a control box(210) for controlling high frequency generated from the high frequency oscillator; a coil(220) which has a semicircular portion and is divided into left and right parts such that the left and right parts are respectively fixed onto the left and right portions of the coil connecting part body; a coil connecting part body(290) which is divided into left and right portions, the left and right portions being respectively divided into upper and lower portions, and the upper and lower portions being rotatably connected to each other by hinges(300); a fixing unit(240) in which a fixing groove is formed such that the fixing unit is united with the coil connecting part body when the lower portion of the coil connecting part body is inserted into the fixing groove, and which is installed on the control box; a connecting wire(250) enabling a free movement of the coil; a connecting wire winding unit(260) for storing the connecting wire; coil handles(230) required for moving the coil; and a center adjusting unit for easily positioning copper pipes in a central part of the coil.

Description

High-Frequency Resistance heating machine for welding pipe

The present invention relates to a high-frequency heating device for copper pipe welding that can be conveniently used in the workplace when welding the copper pipe widely used in the air-conditioning device and piping in the refrigeration and air conditioning field using a copper pipe connection device in which the filler metal is inserted in advance.

In general, high frequency induction heating uses electromagnetic induction to generate a high frequency magnetic field by flowing a high frequency current through a coil so that an induced current flows to an object in the high frequency magnetic field, and thus Joule heat is generated. It can be used for heat treatment of metal, shrinkage, welding, etc. by heating.

Hereinafter, a general high frequency heating apparatus according to the prior art will be described.

1 is a schematic view of a high frequency heating apparatus according to the prior art. As shown in the related art, a general high frequency heating apparatus includes a high frequency induction oscillator 100 for generating a high frequency, a control box 110 for controlling high frequency, a cooler 120 and a coil for cooling heat generated from the high frequency induction oscillator ( 130). In general, the coil 130 is fixed to a control box or a rigid structure, the object to be heated close to the coil to perform heat treatment, shrinkage, welding or the like. These operations consist of high-frequency heating devices capable of large or continuous processing to accommodate large-scale production processes in factories.

However, since the copper pipe welding work performed at the refrigeration and air conditioning piping work site has to be performed in the field directly, the above-mentioned large-capacity fixed high frequency heating device is not suitable for field welding.

That is, in the case of welding copper pipes widely used in air-conditioning devices and piping in the refrigeration and air conditioning field using copper pipe connecting devices (especially, copper pipe connecting devices with filler metal as described in Korean Patent No. 10-0749536) It is common to weld using equipment, electrodes (solvents), and torches.

In this case, productivity and workability depend on the skill of the worker, and even if the same worker works, the welding state may vary according to the surrounding conditions and the body condition of the worker.

In addition, when welding using a torch, productivity and workability vary depending on the skill of the operator, and even if the same worker works, welding integrity may change according to the surrounding conditions and the body condition of the worker.

The present invention is to solve the above-mentioned problems, it is possible to easily perform copper tube welding in the field as well as to solve the problem that the welding state changes depending on the skill of the operator copper tube which can secure the productivity and safety It is to provide a high frequency heating device for welding.

Especially in the field of refrigeration and air-conditioning, it is possible to quickly and conveniently weld the two copper tubes by combining them with the copper tube connecting device and to ensure stable and uniform welding condition regardless of the working conditions. It is an object of the present invention to provide a high-frequency heating device for copper pipe welding that can improve the convenience, safety and productivity of the work.

The present invention to achieve the above object, the high frequency oscillator for generating a high frequency; A control box for controlling the high frequency generated by the high frequency oscillator; A coil having a semi-circular portion and divided into left and right portions and fixed to left and right portions of the coil connecting portion body, respectively; A coil connection part body separated into a left part and a right part, wherein the left part and the right part are respectively divided into upper and lower parts, and the upper and lower parts are configured to be connected to each other rotatably by a hinge; A fixing device which is provided with a fixing groove which is coupled when the lower end of the coil connection part is inserted and is installed on the control box; A connecting line for allowing free movement of the coil; It is provided with a high-frequency heating device for copper pipe welding, characterized in that it comprises a; connecting wire winding device for storing the connection connecting wire.

According to the high frequency heating device for copper pipe welding according to the present invention, the following effects can be expected.

The high frequency heating apparatus of the present invention is provided with a left and right split type coil and a center adjusting device which can freely move coils and open and close the coils, thereby ensuring stable and uniform welding regardless of working conditions such as skill level. The status can be quickly obtained and the work convenience and productivity can be significantly improved.

Particularly, in the field of refrigeration and air conditioning, the welding operation is quick and convenient in welding by combining two copper pipes with a copper pipe connecting device, and the welding state is always stable and uniform regardless of the working conditions. By making it secured, there is an effect of improving the convenience, safety and productivity of the work.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 4.

2A and 2B are a perspective view and a sectional view schematically showing the high frequency heating device for copper pipe welding according to the present invention, and FIGS. 3A to 3D are detailed views for explaining the high frequency heating device for copper pipe welding according to the present invention.

Referring to these drawings, the high frequency heating apparatus for copper tube welding of the present invention includes a high frequency oscillator 200 for generating a high frequency; A control box 210 for controlling a high frequency from the high frequency oscillator and sending the high frequency coil to the high frequency coil; A coil 220 connected to the control box 210 and freely movable; A fixing device 240 capable of performing a welding operation while fixing the coil 220 to the control box; And a connecting line 250 and a connecting line winding device 260 that allow free movement of the coil.

In addition, the high frequency heating apparatus according to the present invention is characterized by having an opening and closing structure capable of dividing the coil so that the copper tube connecting portion can be easily positioned at the coil center.

To this end, the coil 220 is divided into left and right portions as a semicircular shape, and the coil connection body 290 provided to connect and fix the coil 220 to the control box, as shown in FIGS. 3A to 3D, It is configured to be divided into two left and right portions 290a and 290b, and the left and right portions 290a and 290b are also divided into upper and lower portions 290a-1 and 290a-2 and 290b-1 and 290b-2, respectively. do.

The upper and lower portions 290a-1, 290a-2 and 290b-1, 290b-2 are configured to be connected to each other in a rotatable state by the hinge 300, and a coil necessary for moving the coil on the coil connection body 290. The handle 230 is installed.

In addition, the lower portion of the coil handle 230 has a clasp 310 is provided with a clasp 310 to maintain the coil 220 in a closed state or open state, the clasp 310 is a ring shape, etc. Various known forms are applicable, and other locking devices may be substituted if the two ends of the split coil can be held in contact.

Between the left portion 290a and the right portion 290b of the coil connecting portion body 290, the gap between the lower part of the coil (ie, the gap between the connecting lines; L) is constant when the coil 220 is kept closed. Support plate 320 may be installed to maintain.

The support plate 320 maintains a constant gap between the left portion 290a and the right portion 290b of the coil connector body 290 to fix the lower end of the coil connector body 290 to the fixing groove of the fixing device 240 ( When it is inserted into 240a) also serves to facilitate this.

On the other hand, Figures 4a and 4b shows the main part of the high-frequency heating device for copper tube welding according to another embodiment of the present invention, the high-frequency heating device according to the present invention so that the copper tube connection portion can be easily located in the center of the coil 220 A copper tube center adjusting device 270 may be further included.

At this time, the copper tube center adjusting device 270 is installed so as to orthogonal to the axial direction of the copper tube while contacting the holding rod 271 and welded to one side of the coil and the outer circumferential surface of the copper tube to move the holding rod 271. It consists of a guide bar 272 to guide.

Meanwhile, the fixing device 240 is a device for fixing the coil connecting body when the lower portions 290a-2 and 290b-2 of the coil connecting body 290 are inserted into the control box 210. It may be.

Looking at the action of the high-frequency heater for copper pipe welding of the present invention configured as described above are as follows.

Referring to FIG. 2, first, a high frequency is generated in the high frequency oscillator 200 and sent to the control box 210, where it is adjusted to a desired frequency and sent to the high frequency coil 220.

In this case, the coil 220 may be installed in the fixing device 240 at the upper end of the control box 210 to be used in a fixed state, or may be moved to a position where a welding operation occurs.

That is, when the coil 220 is used in a state in which the control box 210 is fixed, the lower side of the coil connection body 290 may be inserted into and fixed in the fixing groove 240a of the fixing device 240. When the coil 220 is removed from the control box 210 and moved to the welding work position, the coil connection body 290 is separated from the fixing device 240 and the connection wire 250 wound around the connection wire winding device 260 is used. The coil 220 is moved to a desired position so as to be released.

In other words, the connecting line 250 connected to the coil 220 is wound around the connecting line winding device 260 in the space inside the control box 210 and then the coil connecting body 290 is moved to move the coil 220. When the fixing device 240 is separated from the connection wire 250 wound around the connection wire winding device 260, the coil 220 may be moved.

On the other hand, when the coil 220 is to be fixed to the control box 210 again, the connecting line 250 may be wound using the connecting line winding device handle 280.

Referring to FIG. 3, in the high-frequency heating apparatus for welding a copper tube according to the present invention, the coil 220 may be divided into left and right, and the coil connection body 290 may be divided into two left and right parts as shown in FIGS. 3B and 3C. The left portion 290a and the right portion 290b are also divided into upper and lower portions 290a-1 and 290a-2 and 290b-1 and 290b-2, respectively, and the upper and lower portions 290a-1 and 290a-2. The 290b-1 and 290b-2 are connected to each other by the hinge 300 to facilitate positioning of the copper tube to be welded into the coil 220 or to pull the welded copper tube out of the coil 220.

In addition, the coil handle 230 is installed on the upper portion of the coil connection body 290 to provide convenience to move the coil 220 or to position the coil 220 in a desired place during welding.

At this time, the lower portion of the coil handle 230 has a clasp 310 to hold the coil 220 in a closed state (that is, when both sides of the coil abuts to maintain a state capable of heating the heating target object). ), And when the coil 220 is to be opened (that is, to remove the heating object from the coil), the latch 310 is released.

On the other hand, the support plate 320 is provided between the left portion 290a and the right portion 290b of the coil connecting portion body 290, so that the coil spacing L when the coil 220 is kept in a closed state, that is, the connecting line Intervals) can be kept constant.

4A and 4B are detailed views of a coil unit showing a state in which a heating target object, for example, a copper tube, may be installed at the center of the coil.

As shown, the center rod of the center adjusting device 270 welded to the outer surface of the coil to move the front and rear of the guide bar 272 according to the diameter of the copper pipe connecting device to be welded to easily adjust the center position of the copper pipe Can be.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

When welding copper pipes and copper pipe connecting devices widely used in air-conditioning devices and pipes in the field of refrigeration and air conditioning using welding rods and torches at the work site, productivity and workability may be reduced, but the high frequency heating device for copper pipe welding of the present invention In the case of using, the movement of the coil is free, the left and right split coils can be opened and closed, and the copper tube can be easily adjusted using the center adjusting device so that the copper tube is located at the center of the coil. Since the uniform welding state can be secured quickly, the convenience and productivity of the work can be improved dramatically, and the industrial applicability is very high.

1 is a schematic view of a typical high frequency heating apparatus according to the prior art

2A and 2B are schematic views of a high frequency heating device for welding a copper pipe according to the present invention;

Figure 2a is a perspective view of a high frequency heating device for welding copper tube of the present invention

Figure 2b is a cross-sectional view of the high frequency heating device for welding copper tube of the present invention

3A to 3D are detailed views for explaining the high frequency heating device for copper pipe welding of the present invention.

Figure 3a is a perspective view of the main portion of the high frequency heating device for welding copper tube of the present invention

3B is a front view of FIG. 3A and partially cut away.

3C is an enlarged view of the coil unit of FIG. 3B.

Figure 3d is for explaining the opening and closing action of the high-frequency heating device for welding copper tube of the present invention, a view showing a state in which the split coil is open.

4A and 4B illustrate main parts of a high frequency heating device for copper pipe welding according to another embodiment of the present invention, and a detailed view of the coil with the copper pipe center adjusting device attached thereto;

FIG. 4B is a cross sectional view along the line II of FIG. 4A

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

210: control box 220: coil

230: coil handle 240: coil fixing device

250: connecting line 260: connecting line winding device

270: centering device 280: coil winding knob
290: coil connection body

Claims (8)

delete delete delete delete A high frequency oscillator generating high frequency; A control box for controlling the high frequency generated by the high frequency oscillator; A coil having a semi-circular portion and divided into left and right portions and fixed to left and right portions of the coil connection body, respectively; A coil connection part body which is divided into a left part and a right part, wherein the left part and the right part are respectively divided into upper and lower parts, and the upper and lower parts are configured to be rotatably connected to each other by a hinge; A fixing device provided with a fixing groove formed at the lower end of the coil connection body when being inserted therein and installed on the control box; A connecting line for allowing free movement of the coil; A wire winding device for storing the connection wires; A coil handle necessary for moving the coil; And It comprises a central adjusting device that can easily locate the copper tube in the center of the coil, The center adjusting device is characterized in that it comprises a support rod welded to one side of the coil and coupled to, and a guide bar installed to orthogonal to the axial direction of the copper tube while contacting the outer peripheral surface of the copper tube to guide the movement of the holding rod. A high frequency heating device for copper pipe welding. The method of claim 5, wherein The coil handle is a high-frequency heating device for copper tube welding, characterized in that the latch is provided to keep the coil in a closed state or open state. delete A high frequency oscillator generating high frequency; A control box for controlling the high frequency generated by the high frequency oscillator; A coil having a semi-circular portion and divided into left and right portions and fixed to left and right portions of the coil connection body, respectively; A coil connection part body which is divided into a left part and a right part, wherein the left part and the right part are respectively divided into upper and lower parts, and the upper and lower parts are configured to be rotatably connected to each other by a hinge; A fixing device provided with a fixing groove formed at the lower end of the coil connection body when being inserted therein and installed on the control box; A connecting line for allowing free movement of the coil; And, It is configured to include a connecting line winding device for storing the connecting connection line, A high frequency heating device for copper pipe welding, characterized in that a support plate is installed between the left side and the right side of the coil connection unit body to maintain a constant coil spacing when the coil is kept closed.

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