TWI687133B - Induction heating device - Google Patents

Abstract

The present invention provides an induction heating device that suppresses excessive heating of an edge portion without significantly reducing heating efficiency.

The solution means of the present invention is an induction heating device for heating a thin plate-shaped object to be heated, comprising: a first heating coil formed in a substantially root sign shape; and a second heating coil formed in a substantially root sign shape , And are electrically connected to the first heating coil; and these are formed by crossing the vicinity of the edge of the thin plate-shaped object to be heated in areas that are not electrically connected to each other to form a first space outside the first space The area where the thin plate-shaped object to be heated is not formed forms the second space and the third space, the first heating coil and the second heating coil are arranged substantially parallel to the thin plate-shaped object to be heated, and the first heating coil At least one of the second heating coils can be moved in a direction orthogonal to the transport direction of the thin plate-shaped object to be heated, and only the first space can be enlarged or reduced by moving the movable heating coils, and In the first space, the second space, and the third space, the generated magnetic flux is reversed.

Description

Induction heating device

The present invention relates to an induction heating device; in more detail, it relates to a thin plate-shaped object to be heated containing a non-magnetic material or a magnetic material (hereinafter, a "thin plate-shaped object to be heated" is referred to as a "thin-plate-shaped object to be heated" "Object to be heated".) Induction heating device used when heating.

Generally, when induction heating a thin plate-shaped object to be heated of a magnetic material, an induction heating device equipped with a so-called "tunnel coil" as a heating coil is used for heating.

However, in the induction heating device provided with this tunnel type coil, in the case of induction heating a thin plate-shaped object to be heated of a non-magnetic material, the induction is generated on each of the surface and the back of the thin plate-shaped object to be heated The current will cancel and cannot be heated.

Therefore, when induction heating a thin plate-shaped object to be heated of a non-magnetic material, an induction heating device equipped with a so-called "horizontal coil" as a heating coil is used for heating.

Here, as an example of an induction heating device provided with the above-mentioned horizontal coil, a heating coil formed into a substantially rectangular shape by arranging it in parallel with the conveyed thin plate-shaped object to be heated is known. The method of transporting the thin plate-shaped object to be heated from the upper side or the lower side and heating the thin plate-shaped object to be heated (refer to the figure 1(a). ).

However, in this induction heating device, the heating coil is fixedly formed into a substantially rectangular shape.

Therefore, when the length L1 of the heating coil in the width direction is the same as or greater than the width W1 of the thin plate-shaped object to be heated on the upper side or the lower side of the heating coil, the induced current is concentrated on The edge portion of the thin plate-shaped object to be heated causes the edge portion to be excessively heated (see FIG. 1(a).).

As a method for solving this problem, the technique disclosed in Patent Document 1 is known.

That is, the technique disclosed in Patent Document 1 is to dispose a substantially V-shaped heating coil (hereinafter, referred to as a "V-shaped heating coil") slidably on a substantially M-shaped heating coil ( Hereinafter referred to as "M-shaped heating coil".), the size of the first space formed by the V-shaped heating coil and the M-shaped heating coil is adjusted according to the width of the thin plate-shaped object to be heated, and the 1 The magnetic flux generated in the space to heat the thin plate-shaped object to be heated (refer to FIG. 1(b).).

In addition, when the size of the first space formed by the V-shaped heating coil and the M-shaped heating coil is adjusted according to the width of the thin plate-shaped object to be heated, it is the same as that formed by the V-shaped heating coil and the M-shaped heating coil The first space is adjacent (adjacent in the width direction of the thin plate-shaped object to be heated) to form a second space and a third space.

The second space and the third space are reduced when the first space is enlarged, and enlarged when the first space is reduced.

In addition, in the second space and the third space, the magnetic flux generated in the opposite direction to the magnetic flux generated in the first space is generated.

Therefore, near the edge of the thin plate-shaped object to be heated, The edge of the thin plate-shaped object to be heated excessively due to the magnetic flux generated in the space will induce an eddy current in the opposite direction due to the magnetic flux generated in the second and third spaces, so the edge will be avoided The situation where the department is heated excessively.

However, in the technique disclosed in Patent Document 1, when the width of the thin plate-shaped object to be heated is reduced, the first space is reduced, and the thin plate-shaped object to be heated is caused by the magnetic flux generated in the first space. The amount of heating will decrease.

Furthermore, when the width of the thin plate-shaped object to be heated is reduced, the second and third spaces of the magnetic flux that induces eddy current are amplified, and the eddy current is induced by the magnetic flux generated from the first space. It is in the opposite direction, and a further decrease in the heating amount of the thin plate-shaped object to be heated occurs.

Therefore, in the technique disclosed in Patent Document 1, when the width of the thin plate-shaped object to be heated is reduced, a new problem that the heating efficiency of the thin plate-shaped object to be heated is lowered is incurred.

[Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2010-245029

The present invention has been completed in view of the various problems of the conventional technology as described above, and its object is to provide a thin plate-shaped object to be heated with a small width that can suppress the heating efficiency of the thin plate-shaped object to be heated The induction heating device can reduce the excessive heating of the edge of the thin plate-shaped object to be heated.

In order to achieve the above object, the induction heating device of the present invention supplies a high-frequency current from a high-frequency power supply to a heating coil to inductively heat a thin plate-shaped object to be heated; it has: a first heating coil on the other end side The first convex portion is provided and formed into a substantially root mark shape, which is connected to a high-frequency power supply at one end; and the second heating coil is provided at the end portion of the other side with a second convex portion and formed to be substantially The shape of the root sign is connected to a high-frequency power supply at the other end; and at least one of the first heating coil and the second heating coil may be in a predetermined direction orthogonal to the transport direction of the thin plate-shaped object to be heated Or move in a direction inclined with respect to the predetermined direction, and each is arranged substantially parallel to the thin plate-shaped object to be heated, only on the other end side of the first heating coil and the second heating One end of the coil is electrically connected, the first convex portion and the second convex portion are arranged to protrude in opposite directions from each other, and the first heating coil and the second heating coil are not The electrically connected areas intersect in such a way that they are not electrically connected near the edge of the thin plate-shaped object to be heated, forming a substantially square first space, and the thin plate-shaped object to be heated outside the first space The untransported area is arranged in such a way as to form a second space and a third space. In the first space, the second space, and the third space, the magnetic flux generated by the high-frequency current is reversed, and the The first heating coil and the second heating coil move at least one of the movable ones, whereby the first space is enlarged or reduced in the predetermined direction, and the second space and the third space are not enlarged or reduced .

Further, in the present invention, in the above invention, the other end side of the first heating coil is movably arranged in contact with one end side of the second heating coil.

Furthermore, the present invention further includes a pressing means for pressing at least one of the other end side of the first heating coil and one end side of the second heating coil; and When at least one of the first heating coil and the second heating coil moves, the first heating coil and the second heating coil are not electrically connected without performing pressing by the pressing means After the movement of at least one of the first heating coil and the second heating coil is completed, the pressing by the pressing means is performed, and the first heating coil and the second heating coil are set to electric The state of sexual connection.

Furthermore, in the invention described above, the first elongated hole is formed on the other end side of the first heating coil, and the second elongated hole is formed on the one end side of the second heating coil. 1 When at least one of the heating coil and the second heating coil moves, the first heating coil and the second heating coil are not electrically connected without inserting screws into the first elongated hole and the second elongated hole In the state of contact, after the movement of at least one of the first heating coil and the second heating coil is completed, a screw is inserted into the first long hole and the second long hole to set the first heating coil and the above The second heating coil is electrically connected.

In addition, the present invention includes the plate-shaped member formed of a metal that exhibits electrical conductivity in the above-mentioned invention, and is connected to the other end side of the first heating coil and one end of the second heating coil The side partitions are arranged at predetermined intervals; and the pressing means presses the plate-like member; and when at least one of the first heating coil and the second heating coil moves, the pressing is not performed Pressing means means that the first heating coil and the second heating coil are not electrically connected, and after at least one of the first heating coil and the second heating coil is moved, it is used The above-mentioned pressing means is pressed by the above-mentioned plate The first heating coil and the second heating coil are electrically connected.

In addition, in the present invention, in the above invention, the first convex portion is curved at an acute angle with the first tip as a vertex, and the second space is formed as a substantially triangle with the first tip as a vertex In the shape, the second convex portion is curved to have an acute angle with the second tip portion as a vertex, and the third space is formed into a substantially triangular shape with the second tip portion as a vertex.

Furthermore, in the present invention, in the above invention, the first heating coil and the second heating coil are bent to form a substantially root symbol shape.

In addition, in the above invention, the present invention further has a plate-shaped magnetic material which is arranged so as to cover the area where the first space is formed.

Furthermore, in the present invention described above, the magnetic material is formed by arranging a plurality of magnetic members extending in the transport direction of the thin plate-shaped object to be heated in the width direction of the thin plate-shaped object to be heated.

Since the present invention is constructed as described above, it is possible to exert a reduction in the heating efficiency of the thin plate-shaped object to be heated even for a thin plate-shaped object to be heated, and to suppress the reduction in the heating efficiency for the thin plate-shaped object to be heated This excellent effect of excessive heating at the edge.

10‧‧‧Induction heating device

12‧‧‧High frequency power supply

14, 22‧‧‧ feeder

16‧‧‧Guide

18, 20‧‧‧ heating coil

18a, 18b ‧‧‧ sliding part

18c, 20c‧‧‧tip

18d, 20d‧‧‧Bend

18e, 20e‧‧‧Convex

18s, 20s‧‧‧straight area

20a‧‧‧Guide Department

20b‧‧‧Linear part

24, 36, 38 ‧‧‧ Thin plate-shaped object to be heated

24a, 24b, 36a, 36b, 38a, 38b

26‧‧‧Transport

202‧‧‧Plate member

204, 210, 212

206, 214, 216

206-1, 214-1, 216-1

218‧‧‧ Leaf spring

220‧‧‧ referral

A, B‧‧‧ direction

L1‧‧‧Length

P, Q‧‧‧ point

S1, S2, S3 ‧‧‧ space

FIG. 1(a) is an explanatory diagram of a schematic configuration of an induction heating device equipped with a horizontal coil using a conventional technology; FIG. 1(b) shows an induction to suppress excessive heating of an edge portion of a thin plate-shaped object to be heated An explanatory diagram of a schematic configuration of a heating device.

FIG. 2(a) is an explanatory diagram of a schematic configuration using the induction heating device of the present invention; and FIG. 2(b) is an I arrow view of FIG. 2(a).

FIG. 3 is a diagram illustrating the operation of the induction heating device of the present invention.

4(a) and (b) are operation explanatory diagrams using the induction heating device of the present invention.

FIG. 5 is an explanatory diagram showing a modification of the induction heating device of the present invention, and is an explanatory diagram showing a state where two heating coils are arranged on the upper side and the lower side of the thin plate-shaped object to be heated.

FIG. 6 is an explanatory diagram showing a modification of the induction heating device of the present invention, and is a schematic configuration explanatory diagram of an induction heating device in which the tip portion and the bending portion of the heating coil are bent to have a substantially root symbol shape.

7(a) and (b) are explanatory diagrams showing a modified example of the induction heating device of the present invention; FIG. 7(a) is an outline of an induction heating device that transports a thin plate-shaped object to be heated between two heating coils Fig. 7(b) is a Ⅱ arrow view of Fig. 7(a).

8(a) and (b) are explanatory diagrams showing a modification of the induction heating device of the present invention; FIG. 8(a) is an induction heating device in which a plurality of plate-shaped magnetic members are arranged near a heating coil FIG. 8(b) is a III arrow view of FIG. 8(a).

9(a) and (b) are explanatory diagrams showing modified examples of the induction heating device of the present invention; FIG. 9(a) is an explanatory diagram of a schematic configuration of an induction heating device whose spaces S2 and S3 have substantially rectangular shapes; and 9(b) is an explanatory diagram of a schematic configuration of an induction heating device in which the spaces S2 and S3 have a substantially semicircular shape.

10 is an explanatory diagram showing a modified example of the induction heating device of the present invention, and is a schematic configuration explanatory diagram of an induction heating device in which a plate-shaped magnetic member is arranged near a heating coil.

11(a) and (b) are explanatory diagrams showing modified examples of the induction heating device of the present invention; FIG. 11(a) is an explanatory diagram of a schematic configuration of an induction heating device using a pressing member to contact a heating coil; and Fig. 11(b) is the arrow IV view of Fig. 11(a).

12(a), (b) and (c) are explanatory diagrams showing a modification of the induction heating device of the present invention; FIG. 12(a) is a schematic configuration explanatory diagram of an induction heating device using a screw to contact a heating coil Fig. 12(b) is a V arrow view of Fig. 12(a); and Fig. 12(c) is an explanatory view showing a long hole for inserting a screw in a heating coil.

13 is an explanatory diagram showing a modification of the induction heating device of the present invention, and is a schematic configuration explanatory diagram of an induction heating device in which one of the heating coils moves in a direction inclined relative to the direction orthogonal to the conveying direction.

14 is an explanatory diagram showing a schematic configuration of a modification of the induction heating device of the present invention.

15(a) is a view of arrow VI of FIG. 14; and FIG. 15(b) is a view of arrow VII of the portion where the heating coils of FIG. 14 are electrically connected to each other; further, FIG. 15(c) shows that the heating coil is Illustration of the state of electrical connection.

16(a) and (b) are explanatory diagrams showing a schematic configuration of a modification of the induction heating device shown in FIG.

17(a), (b) and (c) are explanatory diagrams showing a modification of the induction heating device shown in FIG.

18(a), (b), (c), and (d) are explanatory views when the pressing member and the pressing cylinder are arranged only on the upper side of the other end side of the heating coil 18.

FIGS. 19( a) and (b) are explanatory diagrams when the pressing member and the pressing cylinder are arranged only on the lower side of one end side of the heating coil 20.

Hereinafter, an example of an embodiment using the induction heating device of the present invention will be described in detail while referring to the drawings.

Here, FIG. 2(a) shows an explanatory diagram of a schematic configuration of an induction heating device using the present invention, and FIG. 2(b) shows an arrow I view of FIG. 2(a).

The induction heating device 10 shown in FIG. 2 includes: a high-frequency power supply 12; a guide 16 connected to the high-frequency power supply 12 via a feeder 14; and a heating coil 18 formed on one end side of the guide 16 the sliding portion 18a that slides on; and the heating coil 20, which forms the guide portion 20a that guides the sliding portion 18b formed on the other end side of the heating coil 18 on one end side, and is formed on the other side The straight portion 20b on one end side is connected to the high-frequency power supply 12 via the feeder 22.

In addition, the guide 16, the heating coil 18, and the heating coil 20 are preferably formed of, for example, copper, and are made of the same material.

In addition, the heating coil 18 and the heating coil 20 are arranged on the upper side and the lower side with a space therebetween so that, except for a part, they are not electrically connected to each other.

In more detail, the heating coil 18 is provided with a sliding portion 18b movably on the guide portion 20a of the heating coil 20, and the heating coil 18 and the heating coil 20 are supplied with liquid (for example, water) for internal cooling. .

The heating coil 18 is formed in a substantially root symbol shape that imitates the shape of a square root symbol "√ (root number)", and is curved to form a convex portion 18e and a curved portion 18d having a pointed portion 18c. That is, the convex portion 18e has a shape bent at an acute angle with the tip portion 18c as a vertex.

In the same manner, the heating coil 20 is formed in a substantially root symbol shape that imitates the shape of a square root symbol "√ (root number)", and is bent to form a convex portion 20e and a bent portion 20d having a pointed portion 20c. That is, the convex portion 20e becomes the tip portion 20c as The apex is curved into an acute angle shape.

The heating coil 18 and the heating coil 20 are arranged above the thin plate-shaped object to be transported 24 and electrically connected to the guide portion 20a at the sliding portion 18b.

Then, the heating coil 18 and the heating coil 20 are located on the upper side of the conveying path 26 for conveying the thin-plate-shaped object to be heated 24, and are arranged so as to form a substantially quadrangular shape so as not to be electrically connected to each other, and the heating coil 18. The heating coil 20 and the thin-plate-shaped object to be heated 24 that is transported to the transport path 26 are arranged so that each is located approximately in parallel.

In addition, the heating coil 18 is disposed above the heating coil 20, and is disposed so as to protrude toward the forward side in the conveying direction of the conveyed thin plate-shaped object to be heated 24 in the conveying direction.

Then, the heating coil 18 is formed so that the sliding portion 18a, the curved portion 18d, and the tip portion 18c are on the same plane, and the sliding portion 18b is formed so as to vertically overlap the guide portion 20a.

On the other hand, the heating coil 20 is arranged below the heating coil 18, and is arranged so that the convex portion 20e protrudes toward the rear side in the conveying direction of the conveyed thin plate-shaped object to be heated 24.

Then, the heating coil 20 is formed so that the guide portion 20a, the bent portion 20d, the tip portion 20c, and the straight portion 20b are located on the same plane.

In addition, the guide 16 and the guide portion 20a provided in the heating coil 20 have a predetermined length in structure, and when the heating coil 18 is moved, the structure has slide portions 18a, 18b that can guide the installation in the heating coil 18 The length.

In the above configuration, it is referred to the actions shown in FIGS. 3 and 4 In the drawings, the method of heating the thin plate-shaped object to be heated 24 using the induction heating device 10 will be described on one side.

To use the induction heating device 10 to heat the thin plate-shaped object to be heated 24, the adjustment is first performed in such a manner that the heating coil 18 is in the direction of arrow A or the direction of arrow B by a moving means (not shown) (ie, In the direction orthogonal to the conveying direction.), and the heating coil 18 and the heating coil 20 are not electrically connected so that the position of the intersection point P and the point Q is located below the heating coil 18 and the heating coil 20 The vicinity of each of the edge portions 24a, 24b of the thin plate-shaped object to be heated 24 (see FIG. 3).

In addition, when the point P and the point Q are located in the vicinity of the edges 24a and 24b, it is preferable that the point P and the edge portion 24a face each other in the vertical direction of the layout of FIG. 3, and the point Q and the edge portion 24b Adjust the way in the vertical direction of the layout of Figure 3.

Specifically, in the induction heating device 10, when the thin plate-shaped object to be heated 36 having a width smaller than the thin plate-shaped object to be heated 24 is heated, the heating coil 18 is moved in the arrow A direction (see FIG. 3). Then, the positions of the point P and the point Q where the heating coil 18 and the heating coil 20 intersect are adjusted to positions facing the edge portions 36a and 36b of the thin plate-shaped object to be heated 36 (see FIG. 4(a).).

In addition, by moving the heating coil 18 in the direction of arrow A, the substantially square space S1 formed by the heating coil 18 and the heating coil 20 is reduced. In addition, at this time, even if the heating coil 18 moves in the direction of arrow A, the substantially triangular spaces S2 and S3 formed outside the space S1 in the area where the thin-plate-shaped object to be heated 24 is not transported are formed. It will not be reduced or enlarged.

This space S2 uses the tip 18c of the heating coil 18 to form one vertex in a substantially triangular shape, and the space S3 uses the tip 20c of the heating coil 20 to form one vertex in a substantially triangular shape.

In addition, in the induction heating device 10, when the plate-shaped object 38 having a width larger than the thin plate-shaped object 24 is heated, the heating coil 18 is moved in the arrow B direction (see FIG. 3), and The positions of the point P and the point Q where the heating coil 18 and the heating coil 20 intersect are adjusted to positions where they respectively face the edge portions 38a and 38b of the thin plate-shaped object to be heated 38 (see FIG. 4(b).).

In addition, by moving the heating coil 18 in the direction of the arrow B, the substantially square space S1 formed by the heating coil 18 and the heating coil 20 is enlarged. Furthermore, at this time, the substantially triangular spaces S2 and S3 are not reduced or enlarged even if the heating coil 18 moves in the direction of arrow B.

Thereafter, when the high-frequency current is supplied from the high-frequency power source 12 to the guide 16 via the feeder 14, the supplied high-frequency current is as shown by the arrow in FIG. The heating coil 18 of 18a is powered, and then the sliding portion 18b of the heating coil 18 passes through the heating coil 20 provided with the guide portion 20a, and the linear portion 20b of the heating coil 20 returns to the high-frequency power supply 12 via the feeder 22, and High-frequency current flows in the heating coil 18 and the heating coil 20.

By the flow of the high-frequency current of the heating coil 18 and the heating coil 20, magnetic flux is generated from the back surface of the layout of FIG. 3 toward the surface in the space S1, and the generated magnetic flux passes through the thin-plate-shaped object to be heated 24. An eddy current is induced on the surface of the thin plate-shaped object to be heated 24 to heat the thin plate-shaped object to be heated 24.

Then, in the spaces S2 and S3, the flow of the high-frequency current of the heating coil 18 and the heating coil 20 generates magnetic flux from the surface of the layout of FIG. 3 toward the back, and the magnetic flux generated in the space S1 is opposite to The direction of magnetic flux.

Here, in the vicinity of the edge portions 24a and 24b of the thin plate-shaped object to be heated 24 transported below the space S1, the magnetic field passing through the thin plate-shaped object to be heated 24 is generated. The flux (ie, the magnetic flux generated in the space S1.) is the magnetic flux in the opposite direction (ie, the magnetic flux generated in the spaces S2, S3.), and a part of the magnetic flux in the opposite direction passes through the edge portions 24a, 24b .

Therefore, the eddy currents in the opposite direction to the eddy currents induced by the thin-plate-shaped object to be heated 24 are induced in the edge portions 24a and 24b of the thin-plate-shaped object to be heated 24, so that Excess heating.

However, by moving the V-shaped heating coil to adjust the size of the first space, in the induction heating device disclosed in the technique of Patent Document 1, when the first space is enlarged, the second space and the third space It is reduced, and when the first space is reduced, the second and third spaces are enlarged. In addition, at this time, the first space is enlarged or reduced in proportion to the square of the width of the thin plate-shaped object to be heated.

Therefore, in the induction heating device using the technology disclosed in Patent Document 1, when the width of the thin plate-shaped object to be heated is reduced, the first space is reduced in accordance with the width of the thin plate-shaped object to be heated. Since the adjustment is performed, the magnetic flux generated in the first space decreases in proportion to the square of the width of the thin plate-shaped object to be heated. At this time, since the second space and the third space are enlarged, the magnetic flux generated in the second space and the third space increases.

That is, when the width of the thin plate-shaped object to be heated is reduced, the eddy current induced by the thin plate-shaped object to be heated is reduced by the magnetic flux generated in the first space, and the eddy current induced in the opposite direction to the eddy current The current (ie, the eddy current induced by the magnetic flux generated in the second space and the third space) increases.

Therefore, in the induction heating device using the technology disclosed in Patent Document 1, as the width of the thin plate-shaped object to be heated decreases, the reduction in the magnetic flux generated in the first space causes heating of the thin plate-shaped object to be heated Efficiency declines, and The increase in the magnetic flux generated in the second space and the third space causes a further decrease in the heating efficiency of the thin plate-shaped object to be heated.

As such, in the induction heating device using the technique disclosed in Patent Document 1, when the width of the thin plate-shaped object to be heated is reduced, the heating efficiency for the thin plate-shaped object to be heated is significantly reduced.

In contrast, in the induction heating device 10 using the present invention, by moving the heating coil 18, even if the space S1 is enlarged or reduced, the spaces S2 and S3 will not be reduced or enlarged.

Therefore, in the induction heating device 10 using the present invention, when the width of the thin-plate-shaped object to be heated 24 is reduced, the space S1 is adjusted in such a manner that the space S1 is reduced in accordance with the width of the thin-plate-shaped object to be heated 24. The magnetic flux generated by S1 decreases in proportion to the width of the thin plate-shaped object 24 to be heated. However, at this time, since the spaces S2 and S3 are not enlarged but constant, the magnetic flux generated in the spaces S2 and S3 does not increase.

That is, even if the width of the thin plate-shaped object to be heated 24 is reduced, the eddy current induced in the thin plate-shaped object to be heated 24 by the magnetic flux generated in the space S1 is in the opposite direction (i.e. The eddy current induced by the magnetic flux generated in the spaces S2 and S3.) remains constant.

Therefore, in the induction heating device 10 using the present invention, as the width of the thin plate-shaped object to be heated 24 decreases, although the magnetic flux generated in the space S1 decreases, the heating efficiency for the thin plate-shaped object to be heated 24 decreases. However, since the magnetic flux generated in the spaces S2 and S3 does not change, a further decrease in the heating efficiency of the thin plate-shaped object to be heated 24 is avoided.

In this way, compared to the induction heating device using the technology disclosed in Patent Document 1, the induction heating device 10 of the present invention is a thin plate-shaped object to be heated The reduction in width can also suppress the decrease in the heating efficiency for the thin plate-shaped object to be heated.

As described above, the induction heating device 10 of the present invention uses a heating coil 18 that imitates the shape of a substantially root sign that represents a square root sign, "√", above the thin plate-shaped object 24 to be heated, by The convex portion 18e is arranged so as to protrude on the front side of the transport direction of the thin plate-shaped object to be heated 24, and is heated below the heating coil 18 and above the thin plate-shaped object to be heated 24 in a substantially root-marked shape. The coil 20 is arranged so that the convex portion 20e protrudes on the rear side in the conveying direction.

Then, the heating coil 18 is movably arranged on the heating coil 20, and the substantially quadrangular space S1 is formed by the heating coil 18 and the heating coil 20, and the thin plate is not transported outside the space S1 to the lower side The area of the object to be heated 24 forms substantially triangular spaces S2 and S3, and the size of the space S1 is adjusted by moving the heating coil 18.

Accordingly, in the induction heating device 10 using the present invention, the size of the space S1 can be adjusted in accordance with the width of the thin plate-shaped object to be heated 24 without changing the size of the spaces S2 and S3.

Therefore, according to the induction heating device of the present invention, the heating efficiency for the thin plate-shaped object to be heated 24 does not significantly decrease depending on the width of the thin plate-shaped object to be heated 24.

In addition, the above-mentioned embodiments can be modified as shown in (1) to (11) below.

(1) In the above-mentioned embodiment, although the heating coil 18 is moved by a moving means (for example, a motor) not shown, the intersection point of the heating coil 18 and the heating coil 20, that is, point P and point Q, is located in a thin plate shape The method of adjusting the vicinity of the edge portions 24a, 24b of the object to be heated 24 is of course not limited to this, and may be used by an operator, for example The position of the heating coil 18 is moved manually, and the positions of the points P and Q are adjusted.

(2) In the above-mentioned embodiment, although the heating coil 18 and the heating coil 20 are provided above the thin plate-shaped object to be heated 24, it is of course not limited to this, and may be provided below the thin plate-shaped object to be heated 24 Heating coil 18 and heating coil 20.

Furthermore, as shown in FIG. 5, the heating coil 18 and the heating coil 20 may be provided on both the upper side and the lower side of the thin plate-shaped object to be heated 24.

(3) In the above-described embodiment, although the heating coil 18 is arranged above the heating coil 20, it is of course possible to arrange the heating coil 18 below the heating coil 20.

(4) In the above-mentioned embodiment, although the heating coil 20 is fixed and the heating coil 18 is moved, it is of course not limited to this, and it may be configured to fix the heating coil 18 and move the heating coil 20, The heating coil 18 and the heating coil 20 may be movable.

(5) In the above embodiment, the heating coil 18 is bent to form the tip portion 18c and the bent portion 18d, but of course it is not limited to this, and the tip portion 18c and the bent portion 18d may be bent to form a rough mark Shape (see Figure 6.).

Although the heating coil 20 is bent to form the tip portion 20c and the bent portion 20d, it is of course not limited thereto, and the tip portion 20c and the bent portion 20d may be bent to form a substantially root mark shape (see FIG. 6).

Thereby, in the heating coils 18 and 20, the flow of the cooling water flowing in the heating coils 18 and 20 can be smoothed, and the cooling effect by the cooling water can be improved.

(6) In the above-mentioned embodiment, although the heating coil 18 and the heating coil 20 are both provided on the upper side of the thin plate-shaped object to be transported 24, it is of course not limited. Scheduled here.

That is, when the heating coil 18 and the heating coil 20 are arranged, the heating coil 18 may be disposed above the thin plate-shaped object to be heated 24, and the heating coil 20 may be disposed below the thin plate-shaped object to be heated 24 ( 7 (a) and (b).), the heating coil 18 may be provided below the thin plate-shaped object to be heated 24, and the heating coil 20 may be provided above the thin plate-shaped object to be heated 24.

(7) In the above-mentioned embodiment, in order to achieve efficient heating, of course, a magnetic material may also be used.

Specifically, a plate-shaped magnetic material may be arranged above the heating coil 18 and the heating coil 20 located above the thin plate-shaped object to be heated 24 (see FIGS. 8( a ), (b ), and 10 ). .

That is, the plate-shaped magnetic material and the thin plate-shaped object to be heated 24 are arranged so as to sandwich the heating coil 18 and the heating coil 20.

Thereby, the magnetic flux generated in the substantially square space S1 formed by the heating coil 18 and the heating coil 20 can be concentrated by the magnetic material, and the heating efficiency can be improved.

Also, as described in (6) above, when the heating coil 18 is arranged above the thin plate-shaped object to be heated 24 and the heating coil 20 is arranged below the thin plate-shaped object to be heated 24, it can be used for heating A plate-shaped magnetic material may be arranged above the coil 18, a plate-shaped magnetic material may be arranged below the heating coil 20, or a plate-shaped magnetic material may be arranged above the heating coil 18, and the heating coil A plate-shaped magnetic material is arranged below 20.

In addition, when the heating coil 18 is arrange|positioned below the thin plate-shaped to-be-heated object 24, and the heating coil 20 is arrange|positioned above the thin plate-shaped to-be-heated object 24. Next, the plate-shaped magnetic material may be arranged below the heating coil 18, the plate-shaped magnetic material may be arranged above the heating coil 20, or the plate-shaped magnetic material may be arranged below the heating coil 18 Material, and a plate-shaped magnetic material is arranged above the heating coil 20.

That is, the plate-shaped magnetic material is arranged so as to cover the substantially square space S1 formed by the heating coil 18 and the heating coil 20.

In addition, this one-plate-shaped magnetic material may be a sheet-shaped magnetic member formed in accordance with the width of the thin-plate-shaped object to be heated 24 (refer to FIG. 10), or may be extended in the transport direction of the thin-plate-shaped object to be heated 24. A plurality of magnetic members are formed (see FIG. 8(a).).

When the plate-shaped magnetic material is formed by a plurality of magnetic members, the plurality of magnetic members can be adjusted in parallel in the width direction of the thin-plate-shaped object to be heated 24 in accordance with the width of the thin-plate-shaped object to be heated 24 The length of the plate-shaped magnetic material in the width direction can thereby easily adjust the length of the plate-shaped magnetic material in the width direction.

(8) In the above-described embodiment, the space S2 has a substantially triangular shape with the tip 18c of the heating coil 18 as one of the vertices, and the space S3 has the tip 20c of the heating coil 20 as one of the vertices. It is set to a substantially triangular shape, but of course it is not limited to this.

That is, the shape of the convex portion 18e of the heating coil 18 may be deformed, and the space S2 may be substantially rectangular (see FIG. 9(a).) or substantially semicircular (see FIG. 9(b).), etc. Any shape.

Similarly, the shape near the tip 20c of the heating coil 20 may be deformed, and the space S3 may be formed into a substantially square shape (see FIG. 9(a)) or a substantially semicircular shape (see Refer to Figure 9(b). ) Any shape.

(9) In the above-mentioned embodiment, since the sliding member 18b provided on the other end side of the heating coil 18 is guided to the guide part 20a provided on the one end side of the heating coil 20, the heating The coil 18 and the heating coil 20 are in constant contact, but of course the heating coil 18 and the heating coil 20 may be set not to contact each other when the heating coil 18 moves, but to contact each other when the movement of the heating coil 18 ends constitute.

Specifically, it can be set as the following first configuration, second configuration, or third configuration.

(1) The first structure

The heating coil 18 and the heating coil 20 are arranged so as not to be in contact with each other so as to be parallel to the conveyed thin plate-shaped object to be heated 24, and are placed on the upper side of the other end side of the heating coil 18 The pressing member 210 is provided with a pressing member 212 below the one end of the heating coil 20 (see FIGS. 11( a) and (b ).).

In addition, in this case, it is not necessary to provide the sliding member 18b in the heating coil 18, and further, it is not necessary to provide the guide part 20a in the heating coil 20.

The other end side of the heating coil 18 and the one end side of the heating coil 20 are each designed to be separated by a certain interval by using, for example, an energizing means (not shown).

The pressing member 210 is formed of an insulating material, and is disposed at the lower end of the rod-shaped member 214-1 extending from the pressing cylinder 214.

The pressing cylinder 214 uses, for example, a solenoid to move the rod-shaped member 214-1 to the upper side and the lower side, and as the rod-shaped member 214-1 moves, it causes pressing The member 210 moves to the upper side and the lower side. In addition, as a mechanism for moving the rod-shaped member 214-1 to the upper side and the lower side, it is not limited to a solenoid, and a well-known technique can also be used.

Then, by moving the rod-shaped member 214-1 to the lower side, the pressing member 210 is moved to the lower side, and the heating coil 18 is pressed from the upper side toward the lower side with a predetermined pressure. As a result, the heating coil 18 is pressed to the lower side against the empowering means (not shown).

Further, by moving the rod-shaped member 214-1 to the upper side, the pressing member 210 is moved to the upper side, and the pressing of the heating coil 18 is released. As a result, the heating coil 18 is promoted to the upper side by the power-generating means (not shown).

The pressing member 212 is formed of an insulating material, and is disposed at the upper end of the rod-shaped member 216-1 extending from the pressing cylinder 216.

The pressing cylinder 216 moves the rod-shaped member 216-1 to the upper side and the lower side by using, for example, a solenoid, and as the rod-shaped member 216-1 moves, the pressing member 212 is moved to the upper side and Lower side. In addition, as a mechanism for moving the rod-shaped member 216-1 to the upper side and the lower side, it is not limited to a solenoid, and a well-known technique can also be used.

Then, by moving the rod-shaped member 216-1 to the upper side, the pressing member 212 is moved to the upper side, and the heating coil 20 is pressed from the lower side toward the upper side with a predetermined pressure. As a result, the heating coil 20 is recommended to the upper side against the empowering means (not shown).

In addition, by moving the rod-shaped member 216-1 to the lower side, the pressing member 212 is moved to the lower side, and the pressing of the heating coil 20 is released. As a result, the heating coil 20 is pressed to the lower side by the power of the powering means (not shown).

In addition, the pressing member 210 and the pressing member 212 are such that the surface of the pressing member 210 pressing the heating coil 18 and the surface of the pressing member 212 pressing the heating coil 20 sandwich the heating coils 18 and 20 and face each other Way allocation.

Then, in the case where the other end side of the heating coil 18 is not pressed by the pressing member 210, and the one end side of the heating coil 20 is not pressed by the pressing member 212, it is When the other end side of the heating coil 18 and one end side of the heating coil 20 are not in contact, the heating coil 18 and the heating coil 20 are not in contact with each other. That is, in this case, the heating coil 18 and the heating coil 20 are not electrically connected.

In addition, when the pressing member 210 presses the other end side of the heating coil 18 and the pressing member 212 presses the one end side of the heating coil 20, the heating coil 18 The other end side is in contact with one end side of the heating coil 20, and the heating coil 18 and the heating coil 20 are brought into contact with each other. That is, in this case, the heating coil 18 and the heating coil 20 are electrically connected.

In addition, the pressing member 210, the pressing cylinder 214, the pressing member 212, and the pressing cylinder 216 may move in the left-right direction along with the movement of the heating coil 18, or may not move.

Here, when the pressing member 210, the pressing cylinder 214, the pressing member 212, and the pressing cylinder 216 do not move along with the movement of the heating coil 18, the length of the other end side of the heating coil 18 and the heating coil 20 The length of one end of the side is set so that even when the heating coil 18 is moved and pressed by the pressing member 210 and the pressing member 212, the heating coil 18 and the heating coil 20 can be electrically The length of the sexual connection.

Therefore, in the case of this configuration, the pressing member 210 is not used And the other end side of the heating coil 18 is pressed, and the one end side of the heating coil 20 is pressed without using the pressing member 212, thereby making the heating coil 18 and the heating coil 20 non-contact State, the heating coil 18 is moved.

Then, the heating coil 18 is moved to an arbitrary position, and when the movement of the heating coil 18 is completed, the other end of the heating coil 18 is pressed by the pressing member 210, and the pressing member 212 is used. By pressing one end side of the heating coil 20, the heating coil 18 and the heating coil 20 are brought into contact.

In this state, when the high-frequency current is supplied to the heating coil 18 from the high-frequency power source 12 via the feeder 14, the high-frequency current supplied to the heating coil 18 will pass through the heating coil 20, while the other from the heating coil 20 When one end is returned to the high-frequency power source 12 via the feeder 22, the flow of the high-frequency current of the heating coil 18 and the heating coil 20 occurs.

In addition, the pressing member 210 and the pressing member 212 are controlled by the control unit (not shown) to perform pressing and releasing of the heating coils 18 and 20, but this one is controlled by the control unit The control may be performed, for example, by an operator based on the operation of an operating element (not shown.), or may be detected by a detection unit (not shown.) based on the instruction to start the movement of the heating coil 18 or the movement of the heating coil 18 ends The result of the test is performed.

Alternatively, the pressing member 210 may be fixed in contact with the upper side of the other end of the heating coil 18, and the pressing member 212 may be contacted with the lower side of the one end of the heating coil 20. The state is fixed (refer to FIG. 17(c).).

In this case, the energizing means (not shown) may not be provided, and the energizing means is such that the other end side of the heating coil 18 and one of the heating coil 20 The side partitions are arranged at regular intervals.

Then, when the heating coil 18 and the heating coil 20 are electrically connected, the other end portion side of the heating coil 18 is pressed by the pressing member 210, and the heating coil 20 is pressed by the pressing member 212 One end side.

In addition, when the electrical connection between the heating coil 18 and the heating coil 20 is released, the pressing of the pressing member 210 to the other end side of the heating coil 18 is released, and the pressing member 212 is used. The pressure on one end of the heating coil 20 is released. At this time, by moving toward the upper side of the pressing member 210 and moving toward the lower side of the pressing member 212, the other end side of the heating coil 18 and the one end side of the heating coil 20 are separated by At certain intervals.

Here, although the pressing member 210 and the pressing cylinder 214 are arranged on the upper side of the other end side of the heating coil 18, and the pressing member 212 and the pressing cylinder 216 are arranged on one end of the heating coil 20 The lower side of the part side, but the pressing member 210 and the pressing cylinder 214 may be arranged only on the upper side of the other end side of the heating coil 18 (refer to FIG. 17(a).), or only the heating coil The pressing member 212 and the pressing cylinder 216 are arranged on the lower side of one end side of 20 (see FIG. 17(b).)

In the case where the pressing member 210 and the pressing cylinder 214 are provided only on the upper side of the other end side of the heating coil 18, the heating coil 18 may be provided by arranging the plate spring 218 on the heating coil 18, for example. There is only a certain interval between the other end side of the heating coil and one end side of the heating coil 20 (see FIG. 18(a).).

Specifically, a plate spring 218 is provided at the other end of the heating coil 18, and a moving means for moving the heating coil 18 in the left-right direction via the plate spring 218 (not shown) Show.).

Then, at one end of the heating coil 20, the On the lower side of the plate spring 218 at the other end of the coil 18, a pushing member 220 formed of, for example, an elastic member is disposed.

In addition, in this case, the pressing member 210 and the pressing cylinder 214 move together with the heating coil 18.

Thereby, when the other end side of the heating coil 18 is pressed by the pressing member 210, the other end side of the heating coil 18 moves to the lower side against the force of the plate spring 218, and It comes into contact with one end of the heating coil 20. At this time, the leaf spring 218 is in contact with the pushing member 220, and is bent at the portion that is in contact with the pushing member 220 (see FIG. 18(b).).

Thereafter, when the pressing force by the pressing member 210 on the other end side of the heating coil 18 is released, the other end side of the heating coil 18 is moved upward by the force of the plate spring 218 There is a certain distance between the other end of the heating coil 18 and the one end of the heating coil 20.

In addition, in the case where the pressing member 210 and the pressing cylinder 214 are provided only on the upper side of the other end side of the heating coil 18, for example, an energizing means (not shown) may not be separately provided. The pressing member 210 is fixed in contact with the other end side of the heating coil 18 (see FIG. 18(c).).

Thereby, when the other end side of the heating coil 18 is pressed by the pressing member 210, the other end side of the heating coil 18 will move to the lower side, and one side of the heating coil 20 abuts on End side (refer to FIG. 18(d).).

Thereafter, when the pressing force by the pressing member 210 on the other end side of the heating coil 18 is released, the movement toward the upper side of the pressing member 210 causes the other side of the heating coil 18 to The end side moves to the upper side, and the other end side of the heating coil 18 and the one end side of the heating coil 20 are separated by a certain amount Interval.

In addition, in the case where the pressing member 212 and the pressing cylinder 216 are provided only on the lower side of one end side of the heating coil 20, for example, the energizing means (not shown) may not be provided, and the pressing may be performed. The pressing member 212 is fixed in contact with one end side of the heating coil 20 (see FIG. 19(a).).

Thereby, when one end side of the heating coil 20 is pressed by the pressing member 212, the one end side of the heating coil 20 moves to the upper side and abuts on the other end of the heating coil 18 Part side (refer to FIG. 19(b).).

Thereafter, when the pressing force by the pressing member 212 on the one end side of the heating coil 20 is released, the movement toward the lower side of the pressing member 212 causes the one end of the heating coil 20 The side moves to the lower side, and the other end of the heating coil 18 is separated from the one end of the heating coil 20 by a certain distance.

(2) The second structure

When the heating coil 18 and the heating coil 20 are not in contact with each other, they are arranged so as to be parallel to the transported thin plate-shaped object to be heated 24, and are formed on the other end side of the heating coil 18 The first long hole is formed, and a second long hole is formed on one end side of the heating coil 20 (refer to FIGS. 12(a), (b), and (c).).

In addition, in this case, it is not necessary to provide the sliding member 18b in the heating coil 18, and further, it is not necessary to provide the guide part 20a in the heating coil 20.

The first long hole has a predetermined length on the other end side formed on the other side of the heating coil 18, and a screw can be inserted.

In addition, the second long hole is formed on one end of the heating coil 20 The part side has a predetermined length, and a screw that can be inserted into the first long hole can be inserted.

In addition, the heating coil 18 and the heating coil 20 are arranged so that the first long hole and the second long hole communicate with each other.

When the screw is inserted into the first long hole and the second long hole, and the process of fixing the screw with the nut is not performed, the other end of the heating coil 18 and the heating coil 20 are not When one end side contacts, the heating coil 18 and the heating coil 20 are not in contact with each other. That is, the heating coil 18 and the heating coil 20 are not electrically connected.

In addition, when a screw is inserted into the first long hole and the second long hole, and the process of fixing the screw with a nut is performed, the other end side of the heating coil 18 and one of the heating coil 20 The ends are brought into contact, and the heating coil 18 and the heating coil 20 are brought into contact with each other. That is, the heating coil 18 and the heating coil 20 are electrically connected.

In addition, the screws inserted into the first long hole and the second long hole and the nut for fixing the screw are made of conductive material.

Alternatively, the heating coil 18 may be provided with a plurality of holes instead of the first elongated hole, and the heating coil 20 may be provided with a plurality of holes instead of the second elongated hole, using screws and screws. Cap, and the fixed position after the heating coil 18 is moved is adjusted in stages.

Therefore, in the case of this configuration, the heating coil 18 and the heating coil 20 are provided by not inserting screws into the first long hole and the second long hole and fixing the screw with a nut. In a non-contact state, the heating coil 18 is moved.

Then, move the heating coil 18 to an arbitrary position, and at the end of the movement of the heating coil 18, insert screws into the first long hole and the second long hole, and use The process of fixing the screw by the nut, so that the heating coil 18 and the heating coil 20 are brought into contact.

In this state, when the high-frequency current is supplied to the heating coil 18 from the high-frequency power source 12 via the feeder 14, the high-frequency current supplied to the heating coil 18 will pass through the heating coil 20, while the other from the heating coil 20 One end part is returned to the high-frequency power supply via the feeder 22, and a high-frequency current flows in the heating coil 18 and the heating coil 20.

As described above, when the heating coil 18 is moved, the heating coil 18 and the heating coil 20 are not electrically connected, and when a high-frequency current is supplied, the heating coil 18 and the heating coil 20 are set to The state of electrical connection, as compared with the state where the heating coil 18 and the heating coil 20 are constantly in contact, avoids the occurrence of wear due to the contact portion of the heating coil 18 and the heating coil 20 accompanying the movement of the heating coil 18 And lead to poor conditions.

In addition, in a configuration in which the heating coil 18 and the heating coil 20 are in contact with each other by a pressing member and a configuration in which a screw and a nut are in contact, a sliding portion 18a may be provided on one end side of the heating coil 18 And, the sliding part 18a is moved on the guide 16 and connected to the high-frequency power source 12 via the feed line 14 connected to the guide 16.

(3) The third structure

When the heating coil 18 and the heating coil 20 are not in contact with each other, they are arranged so as to be parallel to the transported thin plate-shaped object to be heated 24, and one end side of the heating coil 20 is The other end of the coil 18 is at the same height and is formed to extend in parallel, and a plate is provided on the upper side of the other end of the heating coil 18 and the one of the heating coil 20 Member 202, and a pressing member 204 for pressing the plate member 202 is provided. (See Fig. 14 and Fig. 15(a).).

In addition, in this case, it is not necessary to provide the sliding member 18b in the heating coil 18, and further, it is not necessary to provide the guide part 20a in the heating coil 20.

The heating coil 20 is attached to the lower side of the heating coil 18 so as to be parallel to the heating coil 18, and the linear region 20s formed on one end side of the heating coil 20 is aligned with the heating coil 20. The linear region 18s on the other end side of 18 is formed so as to be at the same height position (refer to FIG. 15(b).).

The plate-shaped member 202 is formed of a metal with high conductivity, and is located above the heating coil 18 and the heating coil 20 at a predetermined interval from the linear region 18s of the heating coil 18 and the linear region 20s of the heating coil 20 Provision.

Then, the plate-shaped member 202 presses the plate-shaped member 202 downward by the pressing member 204, and simultaneously abuts on the linear region 18s of the heating coil 18 and the linear region 20s of the heating coil 20, so that the heating coil 18 is electrically connected to the heating coil 20 (refer to FIG. 15(c).).

Moreover, the plate-shaped member 202 is often designed to be a predetermined height position (a height position at which the heating coil 18 and the heating coil 20 are not electrically connected.), and when the pressing member 204 is used to press the plate-shaped member 202 When the pressure is released, it will return to the predetermined height position.

Furthermore, the plate-shaped member 202 may have a cooling mechanism that circulates cooling water inside, for example.

The pressing member 204 is formed of an insulating material, and is disposed at the lower end of the rod-shaped member 206-1 extending from the pressing cylinder 206.

The pressure cylinder 206 moves the rod-shaped member 206-1 using, for example, a solenoid To the upper side and the lower side, and along with the movement of the rod-shaped member 206-1, the pressing member 204 is moved to the upper side and the lower side. In addition, as a mechanism for moving the rod-shaped member 206-1 to the upper side and the lower side, it is not limited to a solenoid, and a well-known technique can also be used.

Then, by moving the rod-shaped member 206-1 to the lower side, the pressing member 204 is moved to the lower side, and the plate-shaped member 202 is pressed at a predetermined pressure, and by the rod-shaped member 206- 1 moves to the upper side, moves the pressing member 204 to the upper side, and releases the pressing force to the plate member 202.

In addition, the plate-shaped member 202, the pressing member 204, and the cylinder 206 may move in the left-right direction along with the movement of the heating coil 18, or may not move.

Here, when the plate-shaped member 202, the pressing member 204, and the cylinder 206 do not move in the left-right direction along with the movement of the heating coil 18, a linear region formed on the other end side of the heating coil 18 18s and the linear region 20s formed on one end side of the heating coil 20, when the plate member 202 is pressed by the pressing member 204 after the heating coil 18 is moved, it is set so that the heating coil 18 and the heating coil 20 The length of the electrical connection.

Therefore, in the case of this configuration, by pressing the plate-shaped member 202 without using the pressing member 204, the heating coil 18 and the heating coil 20 are brought into a non-contact state, and the heating coil 18 is moved.

Then, the heating coil 18 is moved to an arbitrary position, and when the movement of the heating coil 18 is completed, the plate-shaped member 202 is pressed by the pressing member 204, and the heating coil 18 and the heating coil 20 are set to electric The state of sexual connection.

In this state, when high-frequency power is supplied from the high-frequency power source 12 to the heating coil 18 via the feeder 14, the high-frequency current supplied to the heating coil 18 will The plate-shaped member 202 passes through the heating coil 20 and returns from the other end of the heating coil 20 to the high-frequency power source 12 via the feeder 22, so that a high-frequency current flows through the heating coil 18 and the heating coil 20.

In addition, the pressing member 204 is controlled by the control unit (not shown) to perform pressing and releasing of the plate member 202, but this is controlled by the control unit, for example, by The operator performs the operation based on the operation of the operating tool (not shown), or may be detected by the detection unit (not shown) based on the detection result of the detection of the start of movement of the heating coil 18 or the detection of the end of movement of the heating coil 18 And proceed.

Here, although the plate-shaped member 202, the pressing member 204, and the cylinder 206 are disposed above the linear region 18s of the heating coil 18 and the linear region 20s of the heating coil 20, they may be disposed in the linear region of the heating coil 18 18s and the lower side of the linear region 20s of the heating coil 20 (refer to FIG. 16(a).), can also be disposed on both the upper side and the lower side of the linear region 18s of the heating coil 18 and the linear region 20s of the heating coil 20 (See Fig. 16(b).)

In addition, by arranging the plate-shaped member 202, the pressing member 204, and the cylinder 206 on both the upper side and the lower side of the linear region 18s of the heating coil 18 and the linear region 20s of the heating coil 20, it can be made in a plate shape The current flowing in the member 202 becomes half, and it cools efficiently.

(10) In the above embodiment, the heating coil 18 is configured to move in a direction orthogonal to the conveying direction, but of course it is not limited to this, and the heating coils 18, 20, etc. may be used. As shown in FIG. 13, it is configured to move the heating coil 18 in a direction inclined relative to the direction orthogonal to the conveying direction.

(11) The above embodiment and the modifications shown in (1) to (10) above may be combined as appropriate.

(Industry availability)

The present invention is preferably used when heating a plate-shaped object to be heated, particularly a thin plate-shaped object to be heated.

10‧‧‧Induction heating device

12‧‧‧High frequency power supply

14‧‧‧Feeder

16‧‧‧Guide

18‧‧‧Heating coil

18a‧‧‧sliding part

18b‧‧‧sliding part

18c‧‧‧tip

18d‧‧‧Bend

18e‧‧‧Convex

20‧‧‧Heating coil

20a‧‧‧Guide Department

20b‧‧‧Linear part

20c‧‧‧tip

20d‧‧‧Bend

20e‧‧‧Convex

22‧‧‧Feeder

24‧‧‧Thin-plate object to be heated

26‧‧‧Transport

Claims (9)

An induction heating device characterized in that a high-frequency current is supplied from a high-frequency power supply to a heating coil to inductively heat a thin plate-shaped object to be heated; it has: a first heating coil provided on the other end side The first convex portion is formed into a substantially radical symbol shape, and is connected to a high-frequency power supply at one end portion; and the second heating coil is provided with a second convex portion on the other end portion side and formed into a substantially radical symbol The shape of the mark is connected to the high-frequency power supply at the other end; at least one of the first heating coil and the second heating coil may be in a predetermined direction orthogonal to the transport direction of the thin plate-shaped object to be heated or opposite Move in the direction inclined in the predetermined direction, and each is arranged substantially parallel to the thin plate-shaped object to be heated, only on the other end side of the first heating coil and one of the second heating coil The end portion side is electrically connected, the first convex portion and the second convex portion are arranged so as to protrude in opposite directions from each other, and the first heating coil and the second heating coil are not electrically connected The areas are intersected so as not to be electrically connected near the edge of the thin-plate-shaped object to be heated to form a substantially quadrangular first space, and the thin-plate-shaped object to be heated outside the first space is not transported The area is arranged to form a second space and a third space. In the first space, the second space, and the third space, the magnetic flux generated by the high-frequency current is reversed, and the first heating coil By moving at least one of the movable bodies with the second heating coil, the first space is enlarged or reduced in the predetermined direction, and the second space and the third space are not enlarged or reduced. The induction heating device according to claim 1, wherein, The other end side of the first heating coil is movably arranged in contact with one end side of the second heating coil. The induction heating device according to claim 1, further comprising pressing means for pressing at least one of the other end side of the first heating coil and the one end side of the second heating coil; When at least one of the first heating coil and the second heating coil moves, the first heating coil and the second heating coil are not electrically connected without performing pressing by the pressing means After the movement of at least one of the first heating coil and the second heating coil is completed, pressing is performed by the pressing means, and the first heating coil and the second heating coil are set to electric The state of sexual connection. The induction heating device according to claim 1, wherein the first long hole is formed on the other end side of the first heating coil, and the second long hole is formed on one end side of the second heating coil, When at least one of the first heating coil and the second heating coil moves, the first heating coil and the second heating coil are not energized without inserting screws into the first elongated hole and the second elongated hole In the state of sexual contact, after the movement of at least one of the first heating coil and the second heating coil is completed, a screw is inserted into the first long hole and the second long hole to set the first heating coil and The state where the aforementioned second heating coil is electrically connected. The induction heating device according to claim 1, further comprising: a plate-shaped member formed of a metal exhibiting electrical conductivity and being connected to one end of the other of the first heating coils and one of the second heating coils The side partitions are arranged at predetermined intervals; and A pressing means pressing the plate-shaped member; when at least one of the first heating coil and the second heating coil moves, the first heating coil is not pressed by the pressing means, but the first heating coil is pressed The second heating coil is not electrically connected, and after at least one of the first heating coil and the second heating coil has been moved, the pressing by the pressing means is performed through the plate shape. The first heating coil and the second heating coil are electrically connected. The induction heating device according to any one of claims 1 to 5, wherein the first convex portion is curved into an acute angle shape with the first tip portion as an apex, and the second space is formed such that the first tip portion As a substantially triangular shape of one vertex, the second convex portion is curved into an acute angle shape with the second tip portion as the vertex, and the third space is formed as a substantially triangular shape with the second tip portion as one vertex . The induction heating device according to any one of claims 1 to 5, wherein the first heating coil and the second heating coil are bent to form a substantially root symbol shape. The induction heating device according to any one of claims 1 to 5, which further has a plate-shaped magnetic material, which is arranged so as to cover the area where the first space is formed. The induction heating device according to claim 8, wherein the magnetic material is formed by arranging a plurality of magnetic members extending in the transport direction of the thin plate-shaped object to be heated in the width direction of the thin plate-shaped object to be heated.

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