KR102560081B1 - Water Cooled High Frequency Welding Machine - Google Patents

Abstract

Disclosed is an invention for a water-cooled high-frequency welder. The disclosed water-cooled high-frequency welder can arbitrarily adjust a gap distance between a ferrite core forming a magnetic path. Therefore, the water-cooled high-frequency welder can be used universally for pipe welding of a size wherein a diameter is small. A magnetic pole unit of the ferrite core is shaped like a rectangle or an oval rather than a circle. Therefore, the water-cooled high-frequency welder can be efficiently provided for welding an object to be welded. In addition, an assemblyable split structure of the ferrite core can reduce a manufacturing cost due to a material waste when manufacturing an existing heating element. The water-cooled high-freqency welder comprises: a plurality of ferrite cores; an insertion electrode for air gap adjustment; and a coil winding unit of a tubular shape.

Description

Water Cooled High Frequency Welding Machine

The present invention relates to a water-cooled high-frequency welding machine used for brazing welds to each other by high-frequency induction heating, and more particularly, to a water-cooled high-frequency welding machine that can be efficiently used for welding pipes of various sizes and minimizes material loss during manufacturing with an assemblable segment configuration.

In general, a high-frequency welding machine consists of a high-frequency generator that supplies high-frequency power to generate high-frequency waves, and a heating coil that generates a high-frequency vortex in a welded object by generating a high-frequency magnetic field using the high-frequency power source to generate Joule heat for welding. This heating unit is composed of a winding part and a ferrite core, and is provided to couple diamagnetic pipes used in refrigerators, air conditioners, and outdoor units to each other. Such a 'high-frequency welder' The prior art for is published in the patent literature.

First, according to Registration No. 10-0244362 (Patent Document 1), it is a 'dynamic welding heat input control device for high-frequency electric resistance welding used in the manufacture of small-diameter electric resistance welding'. In the device for controlling the amount of heat input, a heating unit that generates heat required for welding to a welding area, a welding control unit that supplies an appropriate amount of electricity required for optimum welding to the heating unit 35, a temperature sensor for measuring the temperature of a welded part by the heat generated by the heating unit, a camera for photographing the welding area centered on the welding area, and the temperature sensor measures the temperature of the welding area to control the amount of welding heat input, and uses the camera to control the welding state based on the image It is composed of a control unit that checks and a display for a monitor that is connected to the control unit and displays an image of a welding part photographed by a camera.'

In addition, according to Patent Registration No. 10-0853454 (Patent Document 2), 'High frequency heating device for copper pipe welding', 'a high frequency oscillator that generates high frequencies, a control box that controls the high frequencies generated by the high frequency oscillator, and a coil having a semicircular portion and divided into left and right portions and fixed to the left and right portions of the body of the coil connecting portion; A coil connection body that is separated into a left part and a right part, the left part and the right part being divided into upper and lower parts, respectively, and the upper and lower parts being rotatably connected to each other by a hinge; The lower end of the body of the coil connection part is provided with a fixing groove formed when inserted, a fixing device installed on the control box, a connection line enabling free movement of the coil, and a connection line winding device for storing the connection line.'

However, according to the 'high frequency welding machine' of the prior art of Patent Literatures 1 and 2, there is an inconvenience due to limitations in use in that only objects to be welded having a specific diameter can be welded.

A high-frequency welding device disclosed in Publication No. 10-2015-0127397 (refer to Patent Document 3) was developed to solve this inconvenience.

According to this 'high frequency welding device', 'it can be commonly used according to pipes of various diameters' and 'a high frequency generating unit for generating high frequencies, and a heating coil unit connected to the high frequency generating unit and provided to heat the outer diameter of the pipe, the heating coil unit includes a first heating coil provided to surround one side of the pipe, a second heating coil provided to cover the other side of the pipe, and adjusting the distance between the first heating coil and the second heating coil according to the outer diameter of the pipe. It includes a mobile unit provided to enable this.

However, the high-frequency welding device disclosed in the prior art (Publication No. 10-2015-0127397) has a better point than the prior art of welding only the to-be-welded object of a specific diameter of the patent documents (1, 2) in that it can be used in common according to pipes of various diameters. It is a configuration that wraps and welds in a circularly surrounded state.

For this reason, in the case of welding a circular pipe, there is an advantage that welding can be performed regardless of the size of the diameter, but there is a problem that efficient welding cannot be expected for a band-shaped flat pipe or an elliptical pipe.

Therefore, there is an urgent need to develop a 'high frequency welding machine' capable of efficiently welding not only various circular pipes but also flat band-type pipes or oval pipes.

KR Patent Registration No. 10-0244362 KR Patent Registration No. 10-0853454 KR Patent Publication No. 10-2015-0127397

The present invention was developed to compensate for the above-described problems of the prior art and to provide various additional advantages, and an object of the present invention is to provide a water-cooled high-frequency welding machine that can be universally used for small-sized pipe welding by arbitrarily adjusting the distance between ferrite cores forming a magnetic path.

An object of the present invention is to provide a water-cooled high-frequency welding machine that can be efficiently provided for welding of to-be-welded objects of various pipe shapes by configuring the magnetic pole of a ferrite core in a rectangular or elliptical shape rather than a circular shape.

Another object of the present invention is to provide a water-cooled high-frequency welding machine having economical efficiency capable of reducing manufacturing costs by eliminating unnecessary material waste when manufacturing a heating iron core.

An object of the present invention is to provide a water-cooled high-frequency welding machine that can effectively use electricity induced in coil windings.

The above object is achieved by a water-cooled high-frequency welding machine provided according to the present invention.

A water-cooled high-frequency welder provided in accordance with one aspect of the present invention includes a plate-shaped body portion forming a main pole that forms a magnetic path by disposing side to side with a disconnected gap for positioning a welded object, a magnetic path connecting portion protruding from the lower side of the body to form a magnetic path, and a plurality of ferrite cores composed of a magnetic path connecting the magnetic connecting portion to form a continuous magnetic path without interruption ; An insertion pole for regulating air gaps composed of a fixing pin portion detachably fixed to the fixing groove and a flat head integrally formed on the fixing pin portion or a protruding head having a protruding portion; and a tubular coil winding part which is installed on the iron core while crossing the gap while forming a groove corresponding to the gap, and when power is supplied, the high frequency generated by the high frequency generator flows to the workpiece placed between the gap adjustment insertion electrodes to generate a vortex due to the high frequency magnetic flux to generate heat for brazing the welded part of the welded object and to flow cooling water therein.
A water-cooled high-frequency welding machine provided according to another aspect of the present invention includes a plate-shaped body portion (yoke) forming a main pole forming a magnetic path by being disposed facing left and right with a gap that is disconnected for positioning a workpiece to be welded, and a plurality of iron cores (ferrite cores) including a magnetic path connector extending protrudingly from the lower end of the body portion at a right angle to the body portion so that they can be connected to each other by a magnetic tube; A tubular coil winding section that forms a groove corresponding to the void and is installed on the iron core while crossing the void, and when power is supplied, a high frequency generated by a high frequency generator flows through a workpiece placed in the void to generate a vortex due to high frequency magnetic flux to generate heat for brazing the welded portion of the welded object and to flow cooling water therein; And a rectangular or elliptical heating magnetic pole protruding from the center or one side of the upper side of each body part facing each other on the side of the iron core forming the gap in the longitudinal direction of the body part and contacting the entire welded part of the flat band-shaped tubular object to be welded to be placed in the gap. A heating magnetic pole part in a rectangular or elliptical shape, and the body part, the heating magnetic pole part, and the magnetic connection part are formed of a coupling hole formed corresponding to each facing part and a coupling rod separately coupled to the coupling hole. It is characterized in that it is coupled separately or formed to form one body with the body, the heating magnetic pole, and the magnetic connection part.

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The water-cooled high-frequency welding machine is characterized in that it includes a wireless lighting means for illuminating by using electricity induced from the coil winding and displaying a high-frequency heating state of the coil winding.

According to the following embodiment of the present invention, an effect that can be efficiently provided for welding of a small pipe size is given by adjusting the gap distance of the ferrite cores.

The present invention provides an effect that can be efficiently provided for welding of a band-shaped flat pipe or an elliptical welded object by configuring the magnetic pole portion of the ferrite core in a rectangular or elliptical shape.

The present invention also provides an effect of cost reduction by minimizing material loss during manufacture of the heating iron core by configuring the heating iron core as a divided body.

The present invention provides an effect that enables useful use of electricity induced in coil windings.

1 is a diagram schematically showing a high-frequency welding machine according to an embodiment of the present invention when viewed from the front, omitting some parts;
Figure 2 is a cross-sectional view along line II in Figure 1,
3A is a view in which only the ferrite core part of FIG. 2 is extracted and displayed separately;
Figure 3b is a view showing a modified example of the insertion electrode 130 for adjusting the air gap of Figure 3a,
4 is a diagram schematically showing a high-frequency welding machine according to another embodiment of the present invention when viewed from the front, omitting parts thereof;
5 is a cross-sectional view taken along line II-II of FIG. 4;
6 is a view in which only the ferrite core part of FIG. 4 is extracted and displayed separately;
7(a)(b)(c) are views showing the front, left side, and plane of the iron core of FIG. 6, respectively;
8 is a perspective view showing a modified example of the iron core of FIG. 6;
9(a)(b)(c) are views showing the front, left side, and plane of the iron core of FIG. 8, respectively;
10 is an exploded perspective view showing another embodiment of the iron core of FIG. 6;
11 is a configuration diagram of a wireless lighting circuit for lighting using electricity induced in a coil winding of a high frequency welding machine.

The terms used in the present invention are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator, so the definitions of these terms are consistent with the technical details of the present invention. It should be interpreted as meaning and concept.

In addition, the embodiments of the present invention do not limit the scope of the present invention, but are merely illustrative of the components presented in the claims of the present invention, are included in the technical spirit throughout the specification of the present invention, and are included in the claims.

In addition, optional terms in the following embodiments are used to distinguish one element from other elements, and elements are not limited by the terms.

The accompanying drawings 1 to 3b are views showing a water-cooled high-frequency welding machine according to an embodiment of the present invention.

As shown in the drawing, the water-cooled high-frequency welding machine 100 according to the present invention forms a gap 111 to be welded in a state in which two diamagnetic (copper or aluminum) pipes for brazing are coupled (see FIG. 2), and is placed face-to-face to form a magnetic path. ).

The iron cores 110a and 110b, which form a magnetic path through which high-frequency magnetic flux flows, protrude from the lower side of the main pole bodies 112a and 112b and the main pole bodies 112a and 112b, which are left and right symmetrical as seen in the drawing, and connect the magnetic path connection parts 114a and 114b to form a magnetic path and the magnetic path connection parts 114a and 114b so that there is no disconnection. It consists of a magnetic path tube (Ring) 116 that forms a magnetic path. Since it is difficult to directly manufacture the magnetic path tube 116 in a tube shape, it can be manufactured into a ring-shaped tube by separately manufacturing the two semicircular plate bodies, and then connecting the two separately manufactured semicircular plate bodies integrally to form a cylindrical shape.

As shown in the drawing, the object to be welded 10 located in the void 111 (see FIG. 1) formed by the magnetic break of the iron cores 112a and 112b can be welded by the heating action of the tubular coil winding 120 wound around the iron core 112a, 112b. The coil winding 120 is made by winding a copper tube into a coil shape. , When the high frequency electricity generated by the high frequency generator 30 flows along the coil winding unit 120 when it is installed on the iron cores 112a and 112b while crossing the gap 111 while forming grooves 121 corresponding to the gaps 111 of the iron cores 112a and 112b and supplying power from the commercial power supply unit 20 through the rectifier 30, the coil winding unit 120 The high-frequency magnetic flux generated in flows along a magnetic path formed by the iron cores 112a and 112b. If the air gap 111 is placed in the iron cores 112a and 112b forming the magnetic path, the high-frequency magnetic flux also flows through the air gap 111. Therefore, when a copper or aluminum pipe, which is the object to be welded 10, is placed in the gap 111, high-frequency magnetic flux flows through the diamagnetic pipe to generate high-frequency vortices to generate heat for brazing the connection between the objects to be welded.

In addition, the coil winding part 120 is composed of an empty copper tube, so that cooling water flows through the inside of the copper tube to cool the coil winding part 120 with high heat caused by high frequency.

As shown in the drawing, the gap 111 that enables the welded object 10 to be fixed and supported for welding the welded object 10 is provided with an insertion electrode 130 for adjusting the gap to adjust the distance of the gap 111. The insertion electrode 130 for regulating the gap is designed to narrow the existing distance of the gap 111 to a distance that can support a small diameter welded object 10 so that the welding operation can be performed more quickly and efficiently when the diameter of the object to be welded 10 is smaller than that of the existing air gap 111.

That is, the insertion electrode 130 for adjusting the gap has fixing grooves 131a and 131b installed on the mutually facing portions of the iron cores 112a and 112b on the side of the gap 111, and is formed integrally with the fixing pin parts 132a and 132b detachably fixed to the fixing grooves 131a and 131b and the fixing pin parts 132a and 132b. In order to fix the distance of 1) to enable faster brazing work by fixing the small diameter of the welded object, planar heads 134a and 134b have a thickness that contributes to forming a narrow distance d' (see FIG. 1). It was composed.

In order to keep the distance between the gaps 111 narrower than that of the gap adjusting insertion electrode 130 having planar heads 134a and 134b, an outwardly protruding protruding part 136a is installed on one side of the gap adjustment insertion electrode 130a (see FIG. 3B) so that the flat heads 134a and 134b have It was possible to maintain a narrower gap than the gap of the insertion electrode 130 for adjusting the gap.

Reducing the distance of the air gap 111 of the iron core reduces the magnetic resistance, increases the flowing magnetic flux, and increases the temperature to quickly perform the brazing work on the welded object, ultimately reducing electricity consumption.

The water-cooled high-frequency welding machine 100 having the configuration described above makes it possible to quickly perform a welding operation on a small-diameter object to be welded 10 with one high-frequency welding machine 100.

It will be fully understood from the above embodiment that the shape of the insertion electrodes 130 and 130a for adjusting the gap can be freely modified according to the structure of the object to be welded.

Conversely, in the case of welding a large-diameter welded object, the welding operation may be performed after separating the gap regulating insertion electrode 130 from the gap 111, and the separated gap adjustment insertion electrode 130 may be stored separately when not in use.

4 to 7 are views showing another embodiment of a high-frequency welding machine according to the present invention.

As shown in the drawing, the water-cooled high-frequency welding machine 200 according to the present embodiment includes two ferrite cores 210a and 210b of a predetermined shape that face each other with a gap 211 that is disconnected to position the welded object 10 of a diamagnetic material as in the above embodiment.

As shown in the drawing, the iron cores 210a and 210b, which form a magnetic path through which the high-frequency magnetic flux flows, have plate-shaped bodies 212a and 212b forming symmetrical main poles as seen in the drawing and a heating surface formed from one side of the upper side of the body parts 212a and 212b in the longitudinal direction of the body parts 212a and 212b and contacting the entire welded part of the welded object The rectangular or elliptical heating magnetic poles 213a and 213b providing (213a-1,213b-1) and the body parts 212a and 212b from the lower end of the body parts 212a and 212b away from the heating poles 213a and 213b Protruding at right angles to the body parts 212a and 212b, and connecting to the magnetic tube 216 to form an uninterrupted magnetic path 214a, 214b), each iron core is composed of a single body in which each part is integrated.

As shown in the drawing, in this embodiment also, the object to be welded 10 located in the gap 211 formed by the magnetic break of the iron cores 212a and 212b can be welded by the heating action of the tubular coil winding part 220 wound around the iron cores 212a and 212b. The coil winding part 220 is formed by winding a copper tube into a coil shape as in the above embodiment, and has the same configuration.

That is, when a groove 221 corresponding to the gap 211 of the iron cores 212a and 212b is formed and installed on the iron cores 212a and 212b while crossing the gap 211 and power is supplied from the commercial power supply unit 20 through the rectifier 30, the high frequency magnetic flux generated by the high frequency generator 30 is located in the gap 211 and the iron cores 212a and 21 2b) to flow to the side of the object to be welded 10 supported by the heating poles 213a and 213b to generate a high-frequency vortex due to magnetic flux and generate heat for brazing the welded portion of the object to be welded 10, and the coil winding portion 220 is composed of an empty copper tube and cools the coil winding portion 220 by flowing cooling water into the inside of the copper tube to cool the high heat caused by high frequency in the coil winding portion 220 formula structure was formed.

In this embodiment having the configuration as described above, the object to be welded 10 is located in the gap 211, protruding from each facing portion of the iron core side 212a, 212b, and heating stimulation parts 213a, 213b providing heating surfaces 213a-1, 213b-1 to form a rectangular or elliptical shape, for example, a flat band-shaped tubular welded object or a circular welded object When the water connection is welded, it can come into contact with all parts of the connection part to be welded, so that the desired heating temperature can be obtained while in contact with the entire welded part of the object to be welded with a smaller area than the circular heating stimulation part (see FIG. 1), so that efficient brazing welding can be performed.

8 and 9 are diagrams showing modified examples of the iron cores of FIGS. 4 to 7, and the same parts as those in FIG. 4 are denoted by the same reference numerals to avoid redundant description.

As shown in the drawing, the iron cores 210a and 210b of this modified example have rectangular or elliptical heating magnetic poles 213a and 213b protruding from the central part of the body parts 212a and 212b in the longitudinal direction to provide heating surfaces 213a-1 and 213b-1 that protrude in the longitudinal direction of the body parts 212a and 212b and come into contact with the entire welded part of the object to be welded; And only the shape of the body parts (212a, 21b) is different from the iron core of FIGS. 4 to 7, and the plate-shaped body parts (Yoke) (212a, 212b) constituting the other main poles and the lower end of the body parts (212a, 212b) protrude from the lower end of the body parts (212a, 212b) at right angles to form a magnetic tube (216) to form an uninterrupted magnetic path. Since the configuration and operation of the magnetic magnetic connection unit 214a are the same as those of the above embodiment, a separate description thereof will be omitted.

10 shows another embodiment of the iron core of FIGS. 4 to 7, and since the iron core has a left-right symmetrical structure, only one side (the left side of FIG. 4) is shown. In addition, the same parts as those in FIG. 4 are denoted by the same reference numerals in order to avoid redundant description.

As shown in the drawing, the iron core 210a according to this embodiment has a plate-shaped body portion (Yoke) 212a forming the main pole and a rectangular or elliptical heating magnetic pole 213a and the heating magnetic pole 21 protruding from either side of the upper portion of the body portion 212a in the longitudinal direction of the body portion 212a to provide a heating surface 213a-1 directly facing the entire welded portion of the welded object. 3a), only the configuration in which each divided part of the magnetic path connecting portion 214a protrudes from the lower end of the body portion 212a at right angles to the body portion 212a and connects to form an uninterrupted magnetic path with an aux yoke 216 (see FIG. 6) is separately coupled by the separation coupling portion 140, and the other configurations and actions are different from those of the embodiments of FIGS. 4 to 7 Since they are the same, a separate description is omitted.

The separation coupling portion 140 is composed of coupling holes 142 formed correspondingly to the facing portions of the respective portions and coupling rods 144 made of ferrite that are separately coupled to the coupling holes. Each part of a) can be separated or combined.

In the above embodiment, an assembling method for reducing magnetic resistance by assembling each part of the iron core using a coupling hole and a coupling rod has been described as an example, but each portion may be coupled using a ceramic adhesive that minimizes magnetic resistance.

The assembling configuration of the divided body prevents material loss due to processing during the manufacturing of the iron core, that is, loss of raw materials unnecessarily discarded during the processing of the iron core due to the symmetrical structure of the iron core, so that economic benefits can be obtained.

11 is a circuit configuration diagram of a lighting unit installed in a coil winding of a high frequency welding machine.

As shown in the drawing, in this embodiment, the lighting means 150 is installed in the heating coil 120 of the high-frequency welding machine, and when high-frequency electricity flows through the coil winding part 120, the lighting means 150 can be illuminated with electricity generated by being induced in the coil due to leakage magnetic flux. ) can be a display lamp that informs. The lighting unit 150 is preferably composed of wireless sensor lighting (Wireless sencing lighting).

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, the present invention is not limited thereto, and those skilled in the art within the technical spirit of the present invention It is clear that modifications and improvements are possible. All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

According to the present invention, it provides the benefit of being able to efficiently use even a small electric capacity for welding of various sizes of to-be-welded objects.

10: Work to be welded
40: high frequency generator
100: high frequency welding machine
110a, 110b, 210a, 210b: ferrite core
111,211: gap
112a, 112b, 212a, 212b: Body
114a, 114b, 214a, 214b: magnetic connection part
116,216: Jaro tube (Ring)
120,220: coil winding part
130,130a: Insertion electrode for air gap control
140: separation coupling part
142: coupling hole
144: coupling bar
150: lighting means
213a, 213b: heating stimulation unit
213a-1,213b-1: heating surface

Claims (6)

A plurality of ferrite cores composed of a plate-shaped body portion forming a main pole forming a magnetic path by facing each other with a disconnected gap for positioning a welded object and a magnetic path connection portion protruding from the lower side of the body portion to form a magnetic path and magnetic tubes connecting the magnetic path connection portion to form a continuous magnetic path without interruption;
An insertion pole for regulating air gaps composed of a fixing pin portion detachably fixed to the fixing groove and a flat head integrally formed on the fixing pin portion or a protruding head having a protruding portion; and
A water-cooled high-frequency welder including a tubular coil winding portion that is installed on the iron core while crossing the air gap while forming a groove corresponding to the air gap, and when power is supplied, high frequency generated from the high frequency generator flows through the welded object placed between the gap adjusting insertion electrodes to generate eddy current by high frequency magnetic flux to generate heat for brazing the welded portion of the welded object and to flow cooling water therein. delete A plurality of ferrite cores including magnetic connectors that protrude from the lower end of the body and protrude from the lower end of the body to form a main pole that forms a magnetic path by being disposed facing each other from side to side with a gap that is disconnected to position a welded object, so that they can be connected to each other by a magnetic tube;
A tubular coil winding section that forms a groove corresponding to the void and is installed on the iron core while crossing the void, and when power is supplied, a high frequency generated by a high frequency generator flows through a workpiece placed in the void to generate a vortex due to high frequency magnetic flux to generate heat for brazing the welded portion of the welded object and to flow cooling water therein; and
A rectangular or elliptical heat generating magnetic pole protruding from the center or one side of the upper side of each body part facing each other on the side of the iron core forming the gap in the longitudinal direction of the body part and providing a radiating surface in contact with the entire welded part of the flat band-shaped tubular object placed in the gap,
The body part, the heating magnetic pole part, and the magnetic magnetic connection part are separately coupled by a separate coupling part composed of a coupling hole formed corresponding to each facing part and a coupling rod separately coupled to the coupling hole, or a plate shape. Water-cooled high-frequency welding machine, characterized in that the body portion (Yoke), the heating magnetic pole part, and the magnetic connection part form a single body. delete delete According to claim 3,
The high-frequency welding machine is illuminated using electricity induced from the coil winding part, and a wireless lighting means is provided to display the high-frequency heating state of the coil winding part. Water-cooled high-frequency welding machine.

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