JPH099475A - Induction heating device - Google Patents

Abstract

PURPOSE: To support cables other than a power feeder cable by suppressing the heat release value of a pair of cables of an induction heating device, at the same time easily constituting the device and preventing the device from easily broken, and improving the strength. CONSTITUTION: A second supporter 14 consisting of an insulation plate for inserting and supporting a power feeder cable 13 is mounted to the portion of a first hole 12a of a first supporter 12 made of an aluminum plate and a plurality of first supporters 12 are mounted between a pair of chains connected between a fixed part and a traveling part for supporting an inductor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating device, and more particularly to a cable bearer for the induction heating device.

[0002]

2. Description of the Related Art FIG. 3 is a front view of a conventional induction heating apparatus, in which 1 is a fixing portion, 2 is a rail supporting portion, 3 is a rail fixed on the rail supporting portion 2, and 4 is a rail. The moving part 5 to move is an insulating support part 5 supported on the moving part 4, 6
Is an inductor that is insulated and supported by the insulating support portion 5.
In addition, 7 is a cable bear provided in parallel with three, each supporting a power feeding cable, a control cable, and a water cooling cable. One end of each cable bear 7 is attached to the fixed portion 1 and the other end is movable. It is attached to the part 4.
One ends of the power supply cable and the control cable are connected to the connection portion 8, and the connection portion 8 is electrically connected to the inverter and the control portion. The water cooling cable is connected to the support 9. Further, the other end of the power supply cable is connected to the inductor 6 via the capacitor 10 and the transformer 11 provided in the moving section 4. The capacitor 10 and the transformer 11 form a resonance circuit.

FIG. 4 is a front view of a conventional cable bear 7. The cable bear 7 is composed of a large number of plastic cable supporting portions 7a which are rotatably connected to each other and is deformable as a whole. The cable is inserted through the cable supporting portion 7a.

In the induction heating apparatus having the above structure, the high frequency power from the inverter passes through the power feeding cable supported by the cable bear 7 via the connecting portion 8 and is enlarged by the resonance circuit composed of the capacitor 10 and the transformer 11 to increase the inductor 6. Is supplied to. The inductor 6 induction-heats, for example, the welded portion of the object to be heated, and performs annealing or the like. When the object to be heated is welded, the moving portion 4 is moved to the right or left in FIG. 3 by the control signal, and when the welding is completed and annealing is performed, the inductor 6 is returned to the position shown by the control signal again. . or,
Water cooling of the inductor 6 and the transformer 11 is performed by a signal from the water cooling cable. Since the cable bear 7 is deformable, it can sufficiently cope with the movement of the moving unit 4.

[0005]

In the above conventional induction heating apparatus, the power source is 500 to 20000 Hz.
The high-frequency power source is used. Since such a high-frequency current flows through the power feeding cable, the leakage magnetic flux due to this current heats the metal near the power feeding cable. For this reason,
A metal cable carrier 7 is difficult to use, and is composed of a plastic cable support portion 7a. However, since the plastic cable supporting portion 7a is weak in strength and the permissible load per 1 m is small, the cable bear 7 is divided into three cables and used for each cable.
Further, since the cable support portion 7a is an assembly type of many parts, it is weak against repeated operation, the combined portion is worn and dislocated, and the service life is short. Furthermore, the three cable bears 7 are displaced in operation when the moving unit 4 is moved,
The moving part 4 could not be moved smoothly.

The present invention has been made in order to solve the above problems, and has a small amount of heat generation due to the magnetic flux leaking from the cable bear, a high strength and a long service life, which stabilizes the movement of the moving portion. The purpose is to obtain an induction heating device that can be carried out.

[0007]

According to a first aspect of the present invention, there is provided an induction heating device comprising a non-magnetic metal plate and a first supporter having a first hole for keeping a distance from a power supply cable. , An insulating plate, having a power supply cable insertion hole for inserting a power supply cable in the center, and a first supporter first
A second supporter attached to the hole portion of the above, and a pair of chains connected between the moving portion and the fixed portion, and a cable bear having a plurality of first supporters attached between the pair of chains. It is a thing.

In the induction heating device according to the second aspect, the slit is provided around the first hole of the first supporter.

In the induction heating device according to the third aspect of the present invention, the second hole for inserting the cooling hose provided for supplying the cooling water to the inductor is provided on both sides of the first hole of the first supporter. A slit extending from the periphery of the first hole through the second hole is provided.

[0010]

According to the first aspect of the present invention, the first supporter is provided with the first hole for keeping a distance from the power feeding cable, and the second hole formed of the insulating plate is provided in the first hole. The supporter is attached, the power supply cable is supported by the second supporter, and the first supporter is formed of a non-magnetic metal plate, and the induction current due to the high frequency current flowing through the power supply cable is applied to the first supporter. Is difficult to flow and the amount of heat generated is small. The cable carrier is the first
Also, it is composed of the second supporter and the pair of chains, and has a simple structure and is hard to break. Further, the first supporter is formed of a non-magnetic metal plate, has a high strength, can support cables other than the power feeding cable, requires only one cable bear, and moves the moving part smoothly.

Further, according to the second aspect of the present invention, the slit is provided around the first hole of the first supporter, so that the induced current becomes more difficult to flow and the heating amount is further reduced.

In the present invention, the second hole for inserting the water cooling hose provided for cooling the inductor is provided on both sides of the first hole of the first supporter, and the second hole is provided around the first hole. A slit extending through the second hole is provided, and since the second hole also blocks the flow of the induced current, the induced current becomes more difficult to flow, and the heating amount is further reduced.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1A to 1C are a front view, a side view, and a front view of a second supporter according to this embodiment. 2 (a) and 2 (b) are a front view of the cable bear and a front view of the link plate according to this embodiment. In the figure, reference numeral 12 is a first supporter made of an aluminum plate, and a rectangular first hole 12a is provided to keep a distance from the power supply cable 13 so as not to be affected by a leakage magnetic flux from the power supply cable 13. Has been. Reference numeral 14 is a second supporter formed of an insulating plate, and has a power supply cable insertion hole 14a for inserting the power supply cable 13 in the center. In addition, the first hole 1 of the first supporter 12
2a is provided with a screw hole 12b around the second
The holes 14b are also provided at the four corners of the supporter 14 of
The second supporter 14 is attached to the portion of the first hole 12a of the first supporter 12 by screwing the bolt inserted in b into the screw hole 12b.

The first hole 12a of the first supporter 12 is also provided.
The second holes 12c are provided on both sides of the second hole 12c.
A rubber water cooling hose 15 for supplying cooling water to the inductor 6 and the transformer 11 is inserted into and supported by. Further, a pair of slits 12d is provided around the first hole 12a of the first supporter 12, and one slit 12d is the second hole 1a.
2c extends slightly to the front, and the other slit 12d extends to the longitudinal end portion through the second hole 12c. The first supporter 12 is further provided with a third hole 12e for inserting and supporting the control cable 16. Also, the first
Screw holes 12f are provided on both sides of the supporter 12 in the longitudinal direction.

On the other hand, in FIG. 2, 17 is a link plate made of iron, and one end thereof has three holes 17 in the vertical direction.
a is provided, and the other end is provided with a central hole 17b and arcuate holes 17c obliquely above and below it. Further, four vertical holes 17d are provided at the center of the link plate 17. Each link plate 17 is rotatably connected to each other by inserting the pin 18 inserted into the hole 17a into the central hole 17b and the arc-shaped hole 17c. The chain 19 is constructed by connecting the mounting brackets 21 to the four. Then, the bolts 22 are inserted into the holes 17d of every other link plate 17 between the pair of chains 19, and the bolts 22 are screwed into the screw holes 12f of the first supporter 12 to form the first supporter 12.
The supporter 12 is attached between the pair of chains 19 to form a cable bear.

In the above embodiment, the first supporter 12
The size of the first hole 12a is determined by conducting a test so as not to be affected by the leakage magnetic flux due to the high frequency current flowing through the power feeding cable 13. A power supply cable 13 is inserted and supported in the first hole 12a through a second supporter 14 made of an insulating plate, and the first supporter 12 is made of an aluminum plate which is a non-magnetic metal. The first supporter 12 hardly generates heat due to the leakage magnetic flux.
Further, the first and second supporters 12 and 14 and the pair of chains 19 are formed, and the structure is simple and difficult to break, and the life is extended from 3 to 10 years. Further, the first supporter is made of metal and has high strength, and it is possible to support the water cooling hose 15 and the control cable 16 outside the power supply cable 13,
Only one cable bear is required, and the movement of the moving unit 4 is smooth. In addition, a pair of slits 12d are provided around the first hole 12a of the first support 12, and the water cooling hose 1
The second holes 12c for 5 are provided so that the induced current becomes more difficult to flow and the amount of heat generation is further reduced.

[0017]

As described above, according to the first aspect of the present invention, the first supporter formed of the non-magnetic metal plate is provided with the first supporter.
The power feeding cable is supported in the hole portion of the power feeding device through a second supporter formed of an insulating plate, and the first supporter and the power feeding cable are separated from each other to some extent, and the heat generation amount of the first supporter is suppressed. Further, the cable carrier has a simple structure, is hard to break, and has a long life. Further, the first supporter is made of metal and has a high strength, can support water cooling hoses and control cables other than the power supply cable, and only one cable bear is required, so that the moving part can be smoothly moved.

Further, according to the second aspect, the slit is provided around the first hole of the first supporter, so that the induced current becomes difficult to flow, and the heat generation amount can be further suppressed.

According to the present invention, a slit is provided around the first hole of the first supporter, and a second hole is provided in connection with the slit for inserting and supporting the water cooling hose. Becomes more difficult to flow, and the amount of heat generation can be further suppressed.

[Brief description of drawings]

FIG. 1 is a front view, a side view, and a front view of a second supporter according to the present invention.

FIG. 2 is a front view of a cable bear and a front view of a link plate according to the present invention.

FIG. 3 is a front view of a conventional induction heating device.

FIG. 4 is a front view of a conventional cable carrier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fixed part 3 ... Rail 4 ... Moving part 6 ... Inductor 12 ... 1st supporter 12a ... 1st hole 12c ... 2nd hole 12d ... Slit 13 ... Feed cable 14 ... 2nd supporter 14a ... Feed cable insertion Hole 15 ... Water cooling hose 16 ... Control cable 19 ... Chain

Claims (3)

[Claims] 1. An inductor provided in a moving part, which is connected to a high-frequency power source on a fixed side via a power supply cable,
In an induction heating device that induction-heats an object to be heated with this inductor, a first supporter that is made of a non-magnetic metal plate and has a first hole for keeping a distance from a power supply cable, and an insulating plate are provided. Has a power feeding cable insertion hole for inserting the power feeding cable, and has a second supporter attached to the first hole portion of the first supporter and a pair of chains connected between the moving portion and the fixed portion. An induction heating device comprising: a cable bear provided with a plurality of first supporters mounted between a pair of chains. 2. The induction heating device according to claim 1, wherein a slit is provided around the first hole of the first supporter. 3. A second hole through which a water cooling hose provided for supplying cooling water to the inductor is inserted is provided on both sides of the first hole of the first supporter, and from the periphery of the first hole. The induction heating device according to claim 1, further comprising a slit extending through the second hole.