High frequency induction heating head, and high frequency induction heating device using the same

Abstract

To make compact and lightweight a high frequency induction heating head and a high frequency induction heating device using the same.SOLUTION: A first substrate 12 of which the width direction dimension is X1, the length direction dimension is Y1 and the thickness direction dimension is Z1 and a second substrate 13 of which the width direction dimension is X2, the length direction dimension is Y2 and the thickness direction dimension is Z2 are disposed oppositely while interposing a predetermined interval therebetween in the directions Z1 and Z2. A first core body 17 and a conductive cylinder for coils as a first coil body for supplying magnetic flux to the first core body are disposed on a front end side in the directions Y1 and Y2 between the first and second substrates, and a first insulator is disposed on a rear side of the conductive cylinder for coils between the first and second substrates. A first water channel is internally provided or embedded in the first substrate, and a second water channel is internally provided or embedded in the second substrate. At least a portion of at least one of the first water channel and the second water channel is disposed oppositely to a portion of the first core body 17 in the direction Z1 or the direction Z2.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a high-frequency induction heating head and a high-frequency induction heating device using the same. [Background technology]

[0002] High frequency induction heating heads are used to solder electronic components to circuit boards, as shown in Patent Document 1 below, for example. Specifically, it comprises a roughly ring-shaped core body having a magnetic gap at the tip end, and a coil that supplies magnetic flux to this core body. The coil is connected to a power supply unit, and a high frequency current is supplied to the coil from the power supply unit. The coil is shaped like a hollow pipe, and cooling water is passed through the inside of the pipe to cool the coil. That is, by supplying cooling water from the cooling water supply means to the coil via the power supply unit, not only the coil but also the power supply unit is cooled by the cooling water. In addition, one end of the heat conduction member is connected to the power supply unit in a heat-conducting state, and the core body is held on the other end of this heat conduction member, so that the core body is also cooled via the heat conduction member (for example, a similar prior document is Patent Document 1 below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-190295 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned prior art document, not only the coil but also the power supply unit is cooled with cooling water from a cooling water supply means. In addition, one end of the heat conduction member is connected to the power supply unit, which is water-cooled by the cooling water, in a state that allows heat conduction, and the core body is held on the other end of this heat conduction member, so that the core body is also cooled via the heat conduction member. In other words, since both the coil and the core body can be cooled, the period of suspension due to high temperatures of the coil and core body occurring during operation can be shortened, and as a result, the operating time can be extended. However, in the above-mentioned prior art document, in order to cool the core body, not only the coil but also one end of a heat conduction member is connected to the power supply unit in a heat-conducting state, and the core body is held on the other end of this heat conduction member. In other words, the coil and heat conduction member must be attached separately to the power supply unit, and the configuration must be such that no electrical conduction occurs between these coils and heat conduction member, and further improvements were needed to make the unit smaller and lighter. Therefore, an object of the present invention is to reduce the size and weight. [Means for solving the problem]

[0005] To achieve this object, the high-frequency induction heating head of the present invention comprises a first base body having a width dimension X1, a longitudinal dimension Y1 longer than X1, and a thickness dimension Z1, and a second base body having a width dimension X2, a longitudinal dimension Y2 longer than X2, and a thickness dimension Z2, the first and second base bodies being disposed opposite each other at a predetermined distance in the Z1-Z2 directions, a first core body and a first coil body that supplies magnetic flux to the first core body being disposed between the first and second base bodies on the tip side in the Y1-Y2 directions, and a first insulator An edge body is arranged, the first core body is approximately ring-shaped with a magnetic gap at the tip side in the Y1 and Y2 directions, a first water passage is installed inside or buried in the first base body, and a first water passage opening connected to the first water passage and a first power supply unit are provided, a second water passage is installed inside or buried in the second base body, and a second water passage opening connected to the second water passage and a second power supply unit are provided, and at least a portion of at least one of the first water passage and the second water passage is arranged opposite a portion of the first core body in the Z1 direction or the Z2 direction. Here, the X and Y directions are as shown in FIG. 7, and the Z direction is as shown in FIG. Furthermore, in the high-frequency induction heating head of the present invention, a first through hole is provided in the first base at the tip end side in the Y1 direction in a portion facing the ring-shaped through hole portion of the first core body, and a second through hole is provided in the second base at the tip end side in the Y2 direction in a portion facing the ring-shaped through hole portion of the first core body, and a conductive tube for a coil made of a conductive material that passes through the ring-shaped through hole is provided as the first coil body between the first and second bases facing these first and second through holes, and a first fastener that passes through the first through hole, the conductive tube for a coil, and the second through hole narrows the dimensions in the Z1 and Z2 directions between the first and second bases, thereby electrically conducting the first and second bases via the conductive tube for a coil. Furthermore, the first fastener in the high-frequency induction heating head of the present invention is composed of a first bolt whose tip end passes through the first through-hole, the conductive tube for the coil, and the second through-hole from the first base side and protrudes toward the second base side, or whose tip end passes through the second through-hole, the conductive tube for the coil, and the first through-hole from the second base side and protrudes toward the first base side, and a first nut screwed onto the protruding portion of the first bolt. In addition, in the high-frequency induction heating head of the present invention, a first recess is provided in the first through-hole portion of the first substrate, recessed toward the second substrate, and the first through-hole is formed at the bottom of this first recess, and a second recess is provided in the second through-hole portion of the second substrate, recessed toward the first substrate, and the second through-hole is formed at the bottom of this second recess. Furthermore, the high-frequency induction heating head of the present invention has a first heat-conducting sheet provided between the first base and the first core body, and this first heat-conducting sheet has a third through-hole through which the conductive tube for the coil passes, and a second heat-conducting sheet provided between the second base and the first core body, and this second heat-conducting sheet has a fourth through-hole through which the conductive tube for the coil passes. Furthermore, the first core body in the high frequency induction heating head of the present invention is configured such that one end of a C-shaped first sub-core body and one end of an inverted C-shaped second sub-core body are overlapped, and the magnetic gap is formed by the gap between the other end of the first and second sub-core bodies, and a fifth through hole is provided in the overlapping portion of the first and second sub-core bodies, penetrating these first and second sub-core bodies, and a sixth through hole is provided in the first base body opposite to this fifth through hole, A seventh through hole is provided in the second base opposite the fifth through hole, and a second bolt is provided which passes from the sixth through hole side of the first base, through the fifth through holes of the first and second sub-core bodies, and protrudes out of the seventh through hole of the second base, or passes from the seventh through hole side of the second base, through the fifth through holes of the first and second sub-core bodies, and protrudes out of the sixth through hole of the first base, and a second nut is screwed onto the protruding portion of this second bolt. Furthermore, in the high-frequency induction heating head of the present invention, the first water channel opening of the first water channel of the first base is located rearward in the Y1 direction of the first base from the sixth through hole of the first base, and the first water channel communicating with this first water channel opening is extended to the tip side of the first base in the Y1 direction from the sixth through hole of the first base. In addition, in the high-frequency induction heating head of the present invention, the second water channel opening of the second water channel of the second base is located rearward in the Y1 direction of the second base from the seventh through hole of the second base, and the second water channel communicating with this second water channel opening is extended to the tip side of the second base in the Y2 direction from the seventh through hole of the second base. Furthermore, in the high frequency induction heating head of the present invention, the first water channel of the first substrate and the second water channel of the second substrate are connected outside the first and second substrates. Furthermore, the first insulator in the high-frequency induction heating head of the present invention is a plate-shaped insulator interposed between the first and second bases, with an eighth through hole provided in the first insulator, a ninth through hole provided in the first base facing the eighth through hole, and a tenth through hole provided in the second base facing the eighth through hole, and a third bolt for screw fastening is provided which penetrates from the ninth through hole side of the first base, passes through the eighth through hole of the first insulator, and protrudes into the tenth through hole side of the second base, or which penetrates from the tenth through hole side of the second base, passes through the eighth through hole of the first insulator, and protrudes into the ninth through hole side of the first base. Furthermore, in the high-frequency induction heating head of the present invention, at least one of the first substrate and the second substrate is formed from copper or a metal material containing copper as a main component. The high-frequency induction heating device of the present invention comprises a high-frequency induction heating head, a first power supply unit that supplies high-frequency current to the first power supply unit and second power supply unit of the high-frequency induction heating head, and a first cooling water supply means that supplies cooling water to the first water passage and second water passage of the high-frequency induction heating head. Furthermore, the high frequency induction heating head of the present invention comprises a third base body having a width dimension of X3, a longitudinal dimension Y3 longer than X3, and a thickness dimension Z3, and a fourth base body having a width dimension X4, a longitudinal dimension Y4 longer than X4, and a thickness dimension Z4, which are disposed opposite each other at a predetermined interval in the Z3 and Z4 directions, and a substantially ring-shaped second core body having a magnetic gap on the tip side of the third and fourth base bodies and a second coil body supplying magnetic flux to this second core body are disposed between the third and fourth base bodies at the tip side in the Y3 and Y4 directions, Between the fourth base bodies, a second insulator is disposed rearward of the second core body in the Y3 and Y4 directions, the third base body has a third water passage disposed therein or buried therein, and is provided with a third water passage port connected to the third water passage and a third power supply unit, the fourth base body has a fourth water passage disposed therein or buried therein, and is provided with a fourth water passage port connected to the fourth water passage and a fourth power supply unit, the second core body has one end side of a C-shaped third sub-core body and one end side of an inverted C-shaped fourth sub-core body overlapped, and the third and fourth a magnetic gap is formed by a gap between the other ends of the third and fourth sub-core bodies, and an eleventh through-hole is provided in the overlapping portion of the third and fourth sub-core bodies, a twelfth through-hole is provided in the third base body facing the eleventh through-hole, and a thirteenth through-hole is provided in the fourth base body facing the eleventh through-hole, and a magnetic pole projects from the twelfth through-hole side of the third base body through the eleventh through-holes of the third and fourth sub-core bodies to the outside of the thirteenth through-hole of the fourth base body, or A fourth bolt is provided which passes through the 11th through-hole of the third and fourth sub-core bodies from the 13th through-hole side and protrudes out of the 12th through-hole of the third base body, a fourth nut is screwed onto the protruding portion of this fourth bolt, one end side of a coil conductor constituting the second coil body is arranged between the bolt head of the fourth bolt and either the third base body or the fourth base body adjacent thereto, a central portion of this coil conductor is arranged in the ring-shaped through-hole portion of the second core body, and the other end side of this coil conductor is arranged between the fourth nut and the third base body adjacent thereto,Alternatively, the third water channel and the fourth water channel are disposed between the other of the third and fourth base bodies, and the third and fourth base bodies are electrically connected via a coil conductor, and at least a portion of at least one of the third water channel and the fourth water channel is disposed opposite a portion of the second core body in the Z3 or Z4 direction. In addition, in the high-frequency induction heating head of the present invention, the fourth bolt and the fourth nut are made of metal, and at least one of these fourth bolt and fourth nut is electrically non-conductive with at least one of the third base and the fourth base. Furthermore, the high-frequency induction heating head of the present invention has a third heat-conducting sheet provided between the third substrate and the second core body, and a fourth heat-conducting sheet provided between the fourth substrate and the second core body. In addition, in the high-frequency induction heating head of the present invention, the third water channel opening of the third water channel of the third base is located rearward in the Y3 direction of the third base from the twelfth through hole of the third base, and the third water channel communicating with this third water channel opening is extended to the tip side of the third base in the Y3 direction from the twelfth through hole of the third base. Furthermore, in the high-frequency induction heating head of the present invention, the fourth water channel opening of the fourth water channel of the fourth base is located rearward in the Y4 direction of the fourth base from the thirteenth through hole of the fourth base, and the fourth water channel communicating with this fourth water channel opening is extended to the tip side of the fourth base in the Y4 direction from the thirteenth through hole of the fourth base. In the high frequency induction heating head of the present invention, the third water channel of the third base body and the fourth water channel of the fourth base body are connected to each other. Furthermore, in the high-frequency induction heating head of the present invention, the second insulator is a plate-shaped insulator interposed between the third and fourth bases, a fourteenth through hole is provided in this second insulator, a fifteenth through hole is provided in the third base opposite the fourteenth through hole, and a sixteenth through hole is provided in the fourth base opposite the fourteenth through hole, and a fifth bolt for screw fastening is provided which penetrates from the fifteenth through hole side of the third base, passes through the fourteenth through hole of the second insulator, and protrudes into the sixteenth through hole side of the fourth base, or which penetrates from the sixteenth through hole side of the fourth base, passes through the fourteenth through hole of the second insulator, and protrudes into the fifteenth through hole side of the third base. In the high-frequency induction heating head of the present invention, at least one of the third substrate, the fourth substrate and the coil conductor is made of copper or a metal material containing copper as its main component. Furthermore, the high-frequency induction heating device of the present invention comprises a high-frequency induction heating head, a second power supply unit that supplies high-frequency current to the third power supply unit and fourth power supply unit of the high-frequency induction heating head, and second cooling water supply means that supplies cooling water to the third water passage and fourth water passage of the high-frequency induction heating head. [Effects of the Invention]

[0006] As described above, the high-frequency induction heating head of the present invention comprises a first base body having a width dimension X1, a longitudinal dimension Y1 longer than X1, and a thickness dimension Z1, and a second base body having a width dimension X2, a longitudinal dimension Y2 longer than X2, and a thickness dimension Z2, which are disposed opposite each other at a predetermined interval in the Z1 and Z2 directions, a first core body and a first coil body that supplies magnetic flux to this first core body are disposed between the first and second base bodies on the tip side in the Y1 and Y2 directions, and a first insulator is disposed between the first and second base bodies rearward of the core body in the Y1 and Y2 directions. The first core body is roughly ring-shaped with a magnetic gap at the tip side in the Y1 and Y2 directions, the first base body has a first water passage built in or buried therein, and is provided with a first water passage opening connected to the first water passage and a first power supply unit, the second base body has a second water passage built in or buried therein, and is provided with a second water passage opening connected to the second water passage and a second power supply unit, and at least a portion of at least one of the first water passage and the second water passage is arranged opposite a portion of the first core body in the Z1 direction or the Z2 direction. In other words, in the present invention, a first core body and a first coil body that supplies magnetic flux to this first core body are arranged between the first and second base bodies at the tip side in the Y1 and Y2 directions, and a first water channel is installed inside or buried in the first base body, and a second water channel is installed inside or buried in the second base body, making the configuration compact and making it easier to make it smaller and lighter. Furthermore, at least a portion of at least one of the first water passage and the second water passage is configured to face a portion of the first core body in the Z1 direction or the Z2 direction, so the thermal conduction distance with the first core body and the first coil body is short, allowing for effective cooling and longer continuous operating time. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing a high-frequency induction heating head according to one embodiment of the present invention and a high-frequency induction heating device using the same; [Figure 2]1 is a partially exploded perspective view showing a high-frequency induction heating head according to one embodiment of the present invention and a high-frequency induction heating device using the same; [Figure 3] 1 is a partially exploded perspective view showing a high-frequency induction heating head according to one embodiment of the present invention and a high-frequency induction heating device using the same; [Figure 4] 1 is a partially exploded perspective view showing a high-frequency induction heating head according to one embodiment of the present invention and a high-frequency induction heating device using the same; [Figure 5] 1 is a partially cutaway perspective view of a high-frequency induction heating head according to one embodiment of the present invention and a high-frequency induction heating device using the same; [Figure 6] 1 is a perspective view of a high-frequency induction heating head according to an embodiment of the present invention; [Figure 7] 2 shows a front view of the high-frequency induction heating head according to the embodiment. FIG. [Figure 8] 2 shows a side view of the high-frequency induction heating head according to the embodiment. FIG. [Figure 9] 2 shows a rear view of the high-frequency induction heating head according to the embodiment. FIG. [Figure 10] 2 shows a top view of the high-frequency induction heating head according to the embodiment. FIG. [Figure 11] 2 shows a bottom view of the high-frequency induction heating head according to the embodiment. FIG. [Figure 12] 2 is a partially enlarged cross-sectional view of a high-frequency induction heating head according to an embodiment of the present invention. [Figure 13] 2 is a partially enlarged exploded perspective view of a high-frequency induction heating head according to an embodiment of the present invention; FIG. [Figure 14] FIG. 10 is a perspective view of a high-frequency induction heating head according to another embodiment of the present invention. [Figure 15] 10 is a front view of a high-frequency induction heating head according to another embodiment of the present invention; FIG. [Figure 16] 10 is a side view of a high-frequency induction heating head according to another embodiment of the present invention; FIG. [Figure 17] 10 is a rear view of the high-frequency induction heating head according to another embodiment of the present invention; FIG. [Figure 18]10 is a top view of a high-frequency induction heating head according to another embodiment of the present invention; FIG. [Figure 19] 10 is a bottom view of the high-frequency induction heating head according to another embodiment of the present invention; FIG. [Figure 20] 10 is a partially cutaway perspective view of a high-frequency induction heating head according to another embodiment of the present invention; FIG. [Figure 21] 10 is a partially enlarged cross-sectional view of a high-frequency induction heating head according to another embodiment of the present invention; FIG. [Figure 22] 10 is a partially enlarged exploded perspective view of a high-frequency induction heating head according to another embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] (Embodiment 1) As shown in FIGS. 1 to 5, the high-frequency induction heating device 1 of this embodiment includes a box-shaped main body case 2, similar to the above (Prior Art. 1). The main body case 2 has an upper surface 2a, a lower surface 2b, and four outer peripheral surfaces 2c, all six of which are formed from resin, and an IH output connection connector 2A and two cooling water connection connectors 3 are provided on the upper surface 2a of the main body case 2. A capacitor 6 is disposed inside the main body case 2, and electric waterway connectors 7 and 8 are provided on both sides of the capacitor 6, facing outward from the capacitor 6 side. These electrical waterway connectors 7 and 8 are both made of copper material and are configured to provide electrical conduction with the articles they come into contact with. The electrical water channel connectors 7 and 8 have water channels (not shown) formed inside them that extend in the vertical direction, and a cooling water connection connector 3 is connected to the upper end of this water channel on the upper surface of each of the electrical water channel connectors 7 and 8. 3, the lower ends of the water channels in the electrical water channel connectors 7 and 8 are water channel joints 9 on the condenser 6 side at the bottom of the electrical water channel connectors 7 and 8. Furthermore, below the capacitor 6 and inside the electrical waterway connectors 7 and 8, electrical waterway connectors 10 and 11 are provided, respectively. The capacitor 6, the electrical waterway connectors 7, 8, and the electrical waterway connectors 10, 11 are integrated into the main body case 2 with screws, as in the above (Prior Art. 1). Further, below the electrical waterway connectors 10 and 11, a high frequency induction heating head 5 is attached by screws 4. This embodiment is characterized by the structure of the high-frequency induction heating head 5, which will be described in detail below, but this embodiment is also configured so that high-frequency current is supplied to the IH output connection connector 2A, electric waterway connectors 7 and 10, and high-frequency induction heating head 5, or to the IH output connection connector 2A, electric waterway connectors 8 and 11, and high-frequency induction heating head 5. In other words, the IH output connection connector 2A, electric waterway connectors 7 and 10, and electric waterway connectors 8 and 11 form a supply path for high-frequency current to the high-frequency induction heating head 5. In addition, the cooling water from one cooling water connection connector 3 flows through the electrical water channel connector 7 (or 8), the electrical water channel connector 10 (or 11), and the high-frequency induction heating head 5 to the other cooling water connection connector 3, thereby water-cooling the high-frequency induction heating head 5. The high frequency induction heating head 5 of this embodiment is shown in FIGS. In this specification, the width dimension X and the length dimension Y are defined as shown in FIG. The thickness direction Z indicates the direction shown in FIG. The substrate 10 comprises a first substrate 12 having a width dimension of X1, a longitudinal dimension Y1 longer than X1, and a thickness dimension Z1, and a second substrate 13 having a width dimension of X2, a longitudinal dimension Y2 longer than X2, and a thickness dimension Z2. The rear sides of the first base 12 and the second base 13 are provided with flanges 14, 15 for attaching the high-frequency induction heating head 5 below the electrical waterway connectors 10, 11 using the screws 4, and the flanges 14, 15 are provided with through holes 16 for attachment using the screws 4. These first and second base bodies 12 and 13 are arranged opposite each other at a predetermined distance in the Z1 and Z2 directions, and between the first and second base bodies 12 and 13, at the tip end in the Y1 and Y2 directions, as shown in Figures 12 and 13, a first core body 17 and a conductive tube for coil 18 made of a conductive material that passes through the ring-shaped through hole 17a are provided as an example of a first coil body that supplies magnetic flux to this first core body 17. Furthermore, a first insulator 19 is disposed between the first and second bases 12 and 13, rearward of the first core body 17 in the Y1-Y2 direction. As shown in FIG. 13, the first core body 17 has a substantially ring shape with a magnetic gap 20 at the tip end side in the Y1-Y2 direction. As can be seen from Figures 5 and 10, the first base 12 has a first water channel 21 installed (or buried) therein, and is also provided with two first water channel ports 22 connected to the first water channel 21 and a first power supply unit 23. As shown in Figure 5, the first water channel 21 is formed within the first base 12, extending from one first water channel opening 22 toward the first core body 17, and the portion facing the first core body 17 in the Z1 direction is made into a wide water channel, after which it makes a U-turn and extends to the other first water channel opening 22. The two first water channel ports 22 and the power supply unit 23 are also formed on the surface of the flange 14 on the electrical water channel connector 10 side. On the other hand, two water channel ports 24 are provided on the surface of the electrical water channel connector 10 facing the flange 14 of the electrical water channel connector 10 . Therefore, cooling water from one cooling water connection connector 3 flows into the first water channel 21 through the electrical water channel connector 7, one water channel port 24 of the electrical water channel connector 10, via the first water channel port 22 of the first base 12, and then flows out from the first water channel port 22 to the other water channel port 24 of the electrical water channel connector 10. Although not shown, the second base 13, like the first base 12, has a second water channel installed (or buried) therein, and is also provided with two second water channel ports connected to the second water channel and a second power supply unit. Like the first water channel 21, the second water channel of the second base 13 is formed within the second base 13, extending from one second water channel opening toward the first core body 17, with the portion facing the first core body 17 in the Z2 direction being a wide water channel, which then makes a U-turn and extends to the other second water channel opening. The two second water channel ports of the second base 13 and the power supply section are also formed on the surface of the flange 15 on the electrical water channel connector 11 side. On the other hand, two water channel ports are also provided on the surface of the electrical water channel connector 11 that faces the flange 15 of the electrical water channel connector 11. Therefore, the cooling water flows into the second water channel through the second water channel port of the second base 13, and then flows out from the second water channel port to the other water channel port of the electrical water channel connector 11. In this configuration, as shown in Figures 2 to 5, within the electrical waterway connector 10, a waterway 10a communicating with the downstream waterway port 24 and within the electrical waterway connector 11, a waterway 11a communicating with the upstream waterway port are connected by a connecting tube 25. Therefore, cooling water from one cooling water connection connector 3 flows from one water channel port 24 of the electrical water channel connector 7, the electrical water channel connector 10, through the first water channel port 22 of the first base 12, into the first water channel 21, then flows out from the first water channel port 22 to the other water channel port 24 of the electrical water channel connector 10, then flows into the second water channel through the second water channel port of the second base 13 via the connecting tube 25, then flows out from the second water channel port to the other water channel port of the electrical water channel connector 11, and then flows out to the other cooling water connection connector 3. In other words, the first water port 21 of the first base 12 and the second water port of the second base 13 are connected outside the first base 12, the second base 13 via the connecting tube 25. The cooling water flowing out from the other cooling water connector 3 is cooled by the cooling means and circulates to the one cooling water connector 3 again. As described above, in this embodiment, at least a portion of at least one of the first water passage 22 and the second water passage of the first and second base bodies 12 and 13 is arranged in the Z1 direction or the Z2 direction to face a portion of the first core body 17 arranged between the first and second base bodies 12 and 13. Furthermore, of the first water passage 22 and the second water passage of the first and second base bodies 12 and 13, the portion facing the first core body 17 is wider than the rear portion of the first and second base bodies 12 and 13, as can be seen from FIG. Therefore, the first core body 17 is configured to be effectively cooled by the cooling water flowing through the first water passage 22 and the second water passage. Next, the first core body 17 will be described in more detail. As shown in Figures 12 and 13, a first through hole 26 is provided at the tip end side in the Y1 direction of the first base body 12 in a portion facing the ring-shaped through hole 17a of the first core body 17, and a second through hole 27 is provided at the tip end side in the Y2 direction of the second base body 13 in a portion facing the ring-shaped through hole 17a of the first core body 17, and a conductive tube 18 for a coil made of a conductive material is provided between the first and second base bodies 12, 13 facing these first and second through holes 26, 27, as an example of the first coil body, and passes through the ring-shaped through hole 17a. In addition, the first fastener 28 that passes through the first through hole 26, the conductive tube 18 for the coil, and the second through hole 27 narrows the dimension in the Z1 and Z2 directions between the first and second bases 12 and 13, thereby establishing electrical continuity between the first and second bases 12 and 13 via the conductive tube 18 for the coil. The tip side of the first fastener 28 is composed of a first bolt 29 that passes through the first through hole 26, the coil conductive tube 18, and the second through hole 27 from the first base 12 side and protrudes toward the second base 13 side, and a first nut 30 that is screwed onto the protruding portion of the first bolt 29. In addition, the tip side of the first bolt 29 may be passed from the second base side 13 through the second through hole 27, the conductive tube 18 for the coil, and the first through hole 26, and a first nut 30 may be screwed onto the protruding portion toward the first base 12 side. Furthermore, a first recess 31 recessed toward the second substrate 13 is provided in the first through hole 26 portion of the first substrate 12, and the first through hole 26 is formed at the bottom of this first recess 31, and a second recess 32 recessed toward the first substrate 12 is provided in the second through hole 27 portion of the second substrate 13, and the second through hole 27 is formed at the bottom of this second recess 32. The coil conductive tube 18 electrically connects the first and second bases 12 and 13 at the ring-shaped through hole 17a of the first core body 17, and supplies magnetic flux generated by the high-frequency current flowing through the coil conductive tube 18 to the first core body 17. Therefore, the coil conductive cylinder 18 must be reliably electrically connected to the first and second bases 12 and 13 . In this embodiment, the first and second substrates 12, 13 are made of copper or a metal material containing copper as its main component, which is softer than iron and has a low electrical resistance. Furthermore, a first recess 31 recessed toward the second substrate 13 is provided in the portion of the first through hole 26 of the first substrate 12, and the first through hole 26 is formed at the bottom of this first recess 31. Furthermore, a second recess 32 recessed toward the first substrate 12 is provided in the portion of the second through hole 27 of the second substrate 13, and the second through hole 27 is formed at the bottom of this second recess 32. In other words, by providing the first recess 31 recessed toward the second substrate 13 in the portion of the first through hole 26, that portion is made thin-walled. Similarly, in the portion of the second through-hole 27, a second recess 32 recessed toward the first substrate 12 is provided, thereby making that portion thin-walled. Therefore, when the first nut 30 is screwed onto the first bolt 29, the first recess 31 and the second recess 32 are slightly deformed toward the coil conductive tube 18, ensuring that the coil conductive tube 18 is securely electrically connected to the first and second bases 12 and 13. In addition, a washer 44 is disposed at the fastening portion of the first bolt 29 and the first nut 30 to prevent the bolts from loosening easily. Specifically, the washer 44 is placed between the head of the first bolt 29 and the first recess 31, and the first bolt 29 and the first nut 30 are screwed together, compressing the stepped spring-type washer 44 to prevent the first bolt 29 and the first nut 30 from loosening easily. Furthermore, as an effect of providing the first recess 31 and the second recess 32, the dimensions in the Z1 and Z2 directions on the magnetic gap 20 side can be reduced. 6, by providing the first recess 31 and the second recess 32, the screw head of the first bolt 29 is recessed in the first recess 31, and the first nut 30 is recessed in the second recess 32, and they are not exposed on the surfaces of the first and second bases 12 and 13, thereby making it possible to reduce the dimensions in the Z1 and Z2 directions on the magnetic gap 20 side. This means that when soldering onto a circuit board or the like, soldering can be performed even if the distance between adjacent electronic components is small. Next, a first heat conductive sheet 33 is provided between the first base 12 and the first core body 17, and this first heat conductive sheet 33 has a third through hole 34 through which the conductive tube for the coil 18 passes, as shown in Figure 13. In addition, a second heat conductive sheet 35 is provided between the second base 13 and the first core 17, and this second heat conductive sheet 35 has a fourth through hole 36 through which the conductive tube 18 for the coil passes. As shown in FIG. 13, the first core body 17 is configured by overlapping one end of a C-shaped first sub-core body 37 and one end of an inverted C-shaped second sub-core body 38, with the magnetic gap 20 formed by the gap between the other end of the first and second sub-core bodies 37, 38. In addition, at the overlapping portion of the first and second sub-core bodies 37, 38, a fifth through hole 39 is provided that penetrates these first and second sub-core bodies 37, 38, a sixth through hole 40 is provided in the first base body 12 that faces the fifth through hole 39, and a seventh through hole 41 is provided in the second base body 13 that faces the fifth through hole 39. A second bolt 42 is provided which passes through the fifth through hole 39 of the first and second sub-core bodies 37, 38 from the sixth through hole 40 side of the first base body 12 and protrudes out of the seventh through hole 41 of the second base body 13 (or passes through the fifth through hole 39 of the first and second sub-core bodies 37, 38 from the seventh through hole 41 side of the second base body 13 and protrudes out of the sixth through hole 40 of the first base body 12), and a second nut 43 is screwed onto the protruding portion of this second bolt 42. The second bolt 42 and second nut 43 are used to adjust the dimensions of the magnetic gap 20 formed by the gap between the other ends of the first and second sub-core bodies 37 and 38, and a stepped spring-type washer 45 is provided to prevent the gap from loosening easily after adjustment. In addition, to prevent an inconvenient electrical connection between the first and second bases 12, 13 via the second bolt 42 and second nut 43 for adjusting the dimensions of the magnetic gap 20, a flanged insulating tube 46 is inserted into the sixth through-hole 40 from the first base 12 side. As a result, as shown in Figure 12, the second bolt 42 does not come into electrical contact with the sixth through hole 40 and the first base 12 outside the sixth through hole 40, and as a result, the first and second bases 12, 13 are not easily electrically connected via the second bolt 42 and the second nut 43. The first heat conductive sheet 33 and the second heat conductive sheet 35 are provided with through holes 47, 48 through which the second bolt 42 passes. In this configuration, the first water channel opening 22 of the first water channel of the first base 12 is located rearward in the Y1 direction of the first base 12 from the sixth through hole 40 of the first base 12, and the first water channel 21 communicating with this first water channel opening 22 is extended to the tip side of the first base 12 in the Y1 direction from the sixth through hole 40 of the first base 12. In addition, the second water channel opening 22 of the second water channel of the second base 13 is located rearward in the Y1 direction of the second base 13 from the seventh through hole 41 of the second base 13, and the second water channel communicating with this second water channel opening 22 is extended to the tip side of the second base 13 in the Y2 direction from the seventh through hole 41 of the second base 13. Therefore, the first core body 17 is configured to be effectively cooled by the cooling water flowing through the first water passage 22 and the second water passage via the first heat conduction sheet 33 and the second heat conduction sheet 35. Next, the first insulator 19 is a plate-shaped insulator interposed between the first and second bases 12, 13, and an eighth through hole (not shown) is provided in this first insulator 19, a ninth through hole (not shown) is provided in the first base 12 facing this eighth through hole, and a tenth through hole (49 in Figure 9) is provided in the second base 13 facing the eighth through hole.A third bolt 50 made of synthetic resin for screw fastening is provided, which passes through the eighth through hole of the first insulator 19 from the ninth through hole side of the first base 12 and protrudes out of the tenth through hole 49 of the second base 13 (or passes through the eighth through hole of the first insulator 19 from the tenth through hole 49 side of the second base 13 and protrudes out of the ninth through hole of the first base). The tenth through hole 49 of the second base 13 is a threaded hole, and the protruding portion of the third bolt 50 outside the tenth through hole 49 of the second base 13 is screwed into this tenth through hole 49. Alternatively, the tenth through hole 49 of the second base 13 may be simply a through hole, and a third nut (not shown) may be provided to screw onto the protruding portion of the third bolt 50 protruding outside the tenth through hole 49. In this embodiment, the first base 12 and the second base 13 are formed using a 3D printer, and the first base 12 and the second base 13 each have a first water channel 21 and a second water channel formed therein at the same time. A configuration may be adopted in which grooves are formed in the first substrate 12 and the second substrate 13, and pipe-shaped first water channel 21 and second water channel are embedded therein. Furthermore, a high-frequency induction heating device is made up of the high-frequency induction heating head 5, a first power supply unit (including a capacitor 6, etc.) that supplies high-frequency current to the power supply unit 23 of the first and second bases 12, 13, a first cooling water supply means that supplies cooling water to the high-frequency induction heating head 5, a solder wire supply device, a circuit board conveying device, etc., which are described in the above prior art documents. In this case, the high-frequency induction heating head 5 was made significantly smaller and lighter than (Prior Document 1), which improved solderability on the circuit board (solderability in narrow spaces) and also enabled high-speed operation. Furthermore, the cooling performance of the high-frequency induction heating head 5 was improved, which made it possible to extend the time that it could be operated continuously. (Embodiment 2) Another embodiment of the present invention will be described with reference to FIGS. This embodiment is characterized by the high-frequency induction heating head 51 shown in FIGS. 14 to 22, and this high-frequency induction heating head 51 will be described in detail. 1 to 5 , the high-frequency induction heating head 51 of this embodiment is also configured so that high-frequency current is supplied to the IH output connection connector 2A, electric waterway connectors 7 and 10, and high-frequency induction heating head 51, or to the IH output connection connector 2A, electric waterway connectors 8 and 11, and high-frequency induction heating head 51. In other words, the IH output connection connector 2A, electric waterway connectors 7 and 10, and electric waterway connectors 8 and 11 form a supply path for high-frequency current to the high-frequency induction heating head 51. In addition, the cooling water from one cooling water connection connector 3 flows through the electrical water channel connector 7 (or 8), the electrical water channel connector 10 (or 11), and the high-frequency induction heating head 51 to the other cooling water connection connector 3, thereby water-cooling the high-frequency induction heating head 51. As shown in FIGS. 14 to 22, the high-frequency induction heating head 51 of this embodiment comprises a third substrate 52 having a width dimension of X3, a longitudinal dimension Y3 longer than X3, and a thickness dimension Z3, and a fourth substrate 53 having a width dimension X4, a longitudinal dimension Y4 longer than X4, and a thickness dimension Z4, which are arranged opposite each other at a predetermined interval in the Z3 and Z4 directions. Between the third and fourth base bodies 52, 53, at the tip end side in the Y3, Y4 directions, there is arranged a second core body 55 having an approximately ring shape and having a magnetic gap 54 at the tip end side of the third and fourth base bodies 52, 53, and a coil conductor 56 as an example of a second coil body that supplies magnetic flux to this second core body 55. Furthermore, a second insulator 57 is disposed between the third and fourth bases 52 and 53, rearward of the second core body 55 in the Y3 and Y4 directions. As shown in Figure 20, the third base 52 has a third water channel 58 built in or buried therein, and is also provided with a third water channel port 59 connected to the third water channel 58 and a third power supply unit 60. The fourth base 53 has a fourth water channel (not shown) similar to the third water channel 58 installed inside or buried therein, and is also provided with a fourth water channel port (61 in Figure 18) connected to the fourth water channel, and a fourth power supply unit 62. As shown in FIG. 22 , the second core body 55 is formed in a roughly ring shape by overlapping one end of a C-shaped third sub-core body 63 and one end of an inverted C-shaped fourth sub-core body 64, with the magnetic gap 54 formed by the gap between the other end of the third and fourth sub-core bodies 63, 64. In addition, an eleventh through hole 65 is provided in the overlapping portion of the third and fourth sub-core bodies 63, 64, penetrating these third and fourth sub-core bodies 63, 64, a twelfth through hole 66 is provided in the third base body 52 facing the eleventh through hole 65, and a thirteenth through hole 67 is provided in the fourth base body 53 facing the eleventh through hole 65. In addition, a fourth bolt 68 is provided which passes from the 12th through hole 66 side of the third base 52 through the 11th through hole 65 of the third and fourth sub-core bodies 63 and 64 and protrudes out of the 13th through hole 67 of the fourth base 53 (or passes from the 13th through hole 67 side of the fourth base 53 through the 11th through hole 65 of the third and fourth sub-core bodies 63 and 64 and protrudes out of the 12th through hole 66 of the third base 52), and a fourth nut 69 is screwed onto the protruding portion of this fourth bolt 68. Furthermore, one end of the coil conductor 56 constituting the second coil body is arranged between one side of the bolt head 68a of the fourth bolt 68 and the adjacent third base 52 (or fourth base 53), the central part of this coil conductor 56 is arranged in the ring-shaped through hole 70 portion of the second core body 55, and the other end of this coil conductor 56 is arranged between the fourth nut 69 and the adjacent third base 52 or fourth base 53, so that the third base 52 and the fourth base 53 are electrically connected via the coil conductor 56. In this state, at least a portion of at least one of the third water passage 58 and the fourth water passage is disposed opposite a portion of the second core body 55 in the Z3 or Z4 direction. Therefore, the second core body 55 is configured to be effectively cooled by the cooling water flowing through the third water passage 58 and the fourth water passage. Furthermore, the fourth bolt 68 and the fourth nut 69 are made of metal, and at least one of the fourth bolt 68 and the fourth nut 69 is electrically non-conductive with at least one of the third base 52 and the fourth base 53. This point will be explained in detail below. The fourth bolt 68 and fourth nut 69 are used to integrate the third base body 52 and the fourth base body 53 and to adjust the dimensions of the magnetic gap 54 formed by the gap between the other end of the third sub-core body 63 and the fourth sub-core body 64, and a stepped spring-type washer 71 is provided to prevent loosening. In addition, to prevent an inconvenient electrical connection between the third base 52 and the fourth base 53 via a fourth bolt 68 and a fourth nut 69 for adjusting the dimensions of the magnetic gap 54, a flanged insulating tube 72 is inserted into the twelfth through-hole 66 from the third base 52 side. As a result, as shown in Figure 21, the fourth bolt 68 does not come into electrical contact with the third base 52 through the twelfth through hole 66 and outside the twelfth through hole 66, and as a result, the third and fourth bases 52, 53 are not easily electrically connected via the fourth bolt 68 and the fourth nut 69. Furthermore, a third heat conductive sheet 73 is provided between the third substrate 52 and the second core 55, and a fourth heat conductive sheet 74 is provided between the fourth substrate 53 and the second core 55. The third heat conductive sheet 73 and the fourth heat conductive sheet 74 are provided with through holes 75 and 76 through which the fourth bolt 68 passes. In such a configuration, as shown in Figure 20, the third water channel opening 59 of the third water channel 58 of the third base 52 is located rearward in the Y3 direction of the third base 52 from the twelfth through hole 66 of the third base 52, and the third water channel 58 communicating with this third water channel opening 59 is extended to the tip side of the third base 52 in the Y3 direction from the twelfth through hole 66 of the third base 52. Furthermore, as shown in Figure 20, the third water channel 58 is formed within the third base 52, extending from one third water channel opening 59 toward the second core body 55, with the portion facing the second core body 55 in the Z3 direction being a wide water channel, which then makes a U-turn and extends to the other third water channel opening 59. Furthermore, the fourth water channel opening 61 of the fourth water channel of the fourth base 53 is located rearward in the Y4 direction of the fourth base 53 from the 13th through hole 67 of the fourth base 53, and the fourth water channel (similar to the third water channel 58) communicating with this fourth water channel opening 61 is extended to the tip side of the fourth base 53 in the Y4 direction from the 13th through hole 67 of the fourth base 53. Moreover, the third water channel 58 of the third base 52 and the fourth water channel of the fourth base 53 are connected in the same manner as described above (Embodiment 1). Therefore, cooling water from one cooling water connection connector 3 flows through the electrical water channel connector 7 (or 8), the electrical water channel connector 10 (or 11), and the high-frequency induction heating head 51 to the other cooling water connection connector 3, thereby effectively water-cooling the high-frequency induction heating head 51, particularly the second core body 55 and the coil conductor 56. The second insulator 57 is a plate-shaped insulator interposed between the third and fourth bases 52, 53, and has a 14th through hole (not shown) formed in the second insulator 57, a 15th through hole (not shown) formed in the third base 52 facing the 14th through hole, and a 16th through hole (77 in Figure 17) formed in the fourth base 53 facing the 14th through hole. A fifth bolt 78 made of synthetic resin for screw fastening is provided, which passes through the 14th through hole of the second insulator 57 from the 15th through hole side of the third base 52 and protrudes into the 16th through hole 77 side of the fourth base 53 (or passes through the 14th through hole of the second insulator 52 from the 16th through hole 77 side of the fourth base 53 and protrudes into the 15th through hole side of the third base 52). The 16th through hole 77 of the fourth base body 53 is a threaded hole, and the portion of the fifth bolt 78 protruding into the 16th through hole of the fourth base body 53 is screwed into this 16th through hole 77. At least one of the third substrate 52, the fourth substrate 53 and the coil conductor 56 in the high frequency induction heating head 51 of this embodiment is made of copper or a metal material containing copper as its main component. If the third substrate 52, the fourth substrate 53 and the coil conductor 56 are made of copper or a metal material containing copper as a main component, the electrical resistance value can be made small and the thermal conductivity can be made good. Furthermore, although the coil conductor 56 is U-shaped, if the coil conductor 56 is formed from a copper plate, the coil conductor 56 will deform when the fourth bolt 68 and the fourth nut 69 are tightened, making the tightening operation easier. In Figures 14 to 20, 16a denotes flanges provided on the third base 52 and the fourth base 53, and the high-frequency induction heating head 51 is attached to the main body case 1 by screwing the screws 4 shown in Figures 1 to 3 into the through holes 16a. In this embodiment, the third base body 52 and the fourth base body 53 are formed by a 3D printer, and the third water channel 58 and the fourth water channel are formed inside them at the same time. A configuration may be adopted in which grooves are formed in the third substrate 52 and the fourth substrate 53, and pipe-shaped third water channels 58 and fourth water channels are embedded therein. In this embodiment as well, the high-frequency induction heating device is made up of a high-frequency induction heating head 51, a first power supply unit (including a capacitor 6, etc.) that supplies high-frequency current to power supply units 60, 62 of third and fourth bases 52, 53, a first cooling water supply means that supplies cooling water to the high-frequency induction heating head 51, a solder wire supply device, a circuit board conveying device, etc., which are described in the above prior art documents. In this case, the high-frequency induction heating head 51 was made significantly smaller and lighter than (Prior Document 1), which improved solderability on the circuit board (solderability in narrow spaces) and also made high-speed operation possible. Furthermore, the cooling performance of the high frequency induction heating head 5 has been improved, making it possible to extend the continuous operating time. [Explanation of symbols]

[0009] 1. High frequency induction heating device 2 Main unit case 2A IH output connector 3 Cooling water connector 4 screws 5 High frequency induction heating head 6 capacitors 7 Electrical Waterway Connector 8 Electrical waterway connector 9 Waterway joint 10 Electrical waterway connector 11 Electrical waterway connector 12 First base 13 Second base 14 flange 15 flange 16 through holes 17 First Core Body 17a Ring-shaped through hole 18 Conductive tube for coil 19 First Insulator 20 Magnetic Gap 21 First Waterway 22 First Waterway Entrance 23 First power supply unit 24 Waterway mouth 25 connecting tube 26 First through hole 27 Second through hole 28 First Fastener 29 First Bolt 30 First Nut 31 First recess 32 Second recess 33 First thermal conductive sheet 34 Third Through Hole 35 Second thermal conductive sheet 36 Fourth Through Hole 37 First sub-core body 38 Second sub-core body 39 Fifth Through-hole 40 Sixth Through-hole 41 7th Through-hole 42 Second Bolt 43 Second Nut 44 Washer 45 washer 46 Insulating tube 47 Through Hole 48 through holes 49 10th Through-hole 50 Third Bolt 51 High frequency induction heating head 52 Third Substrate 53 The Fourth Substrate 54 Magnetic Gap 55 Second Core Body 56 Coil conductors 57 Second Insulator 58 Third Waterway 59 Third Waterway Entrance 60 Third power supply unit 61 Fourth Waterway Entrance 62 Fourth power supply unit 63 Third Sub-core Body 64 Fourth Sub-Core Body 65 11th Through Hole 66 12th Through Hole 67 13th Through-hole 68 Fourth Bolt 69 Fourth Nut 70 Ring-shaped through hole 71 Washer 72 Insulating tube 73 Third thermal conductive sheet 74 Fourth Heat Conduction Sheet 75 through holes 76 Through Hole 77 16th Through-hole 78 The Fifth Bolt

Claims

1. a first substrate having a width direction dimension of X1, a longitudinal direction dimension of Y1 longer than X1, and a thickness direction dimension of Z1; and a second substrate having a width direction dimension of X2, a longitudinal direction dimension of Y2 longer than X2, and a thickness direction dimension of Z2, are disposed opposite each other at a predetermined interval in the Z1 and Z2 directions; a first core body and a first coil body that supplies magnetic flux to the first core body are disposed between the first and second base bodies on the tip side in the Y1-Y2 direction; a first insulator is disposed between the first and second base bodies and rearward of the first core body in the Y1-Y2 direction; the first core body has a substantially ring shape with a magnetic gap at the tip end side in the Y1-Y2 direction, The first base body has a first water channel built therein or buried therein, and is provided with a first water channel port connected to the first water channel and a first power supply unit; The second base has a second water channel built therein or buried therein, and is provided with a second water channel port connected to the second water channel and a second power supply unit; A high-frequency induction heating head in which at least a portion of at least one of the first water channel and the second water channel is arranged opposite a portion of the first core body in the Z1 direction or the Z2 direction.

2. a first through hole is provided in a portion of the first base body facing the ring-shaped through hole portion of the first core body at a tip end side in the Y1 direction, and a second through hole is provided in a portion of the second base body facing the ring-shaped through hole portion of the first core body at a tip end side in the Y2 direction, a conductive coil cylinder made of a conductive material is provided as the first coil body between the first and second bases facing the first and second through holes, the conductive coil cylinder passing through the ring-shaped through hole; 2. The high-frequency induction heating head according to claim 1, wherein a first fastener passing through the first through-hole, the conductive tube for the coil, and the second through-hole narrows the dimension in the Z1 and Z2 directions between the first and second bases, thereby electrically connecting the first and second bases via the conductive tube for the coil.

3. 3. The high-frequency induction heating head according to claim 2, wherein the first fastener comprises a first bolt whose tip end passes from the first base side through the first through-hole, the conductive tube for the coil, and the second through-hole and protrudes toward the second base side, or whose tip end passes from the second base side through the second through-hole, the conductive tube for the coil, and the first through-hole and protrudes toward the first base side, and a first nut screwed onto the protruding portion of the first bolt.

4. a first recessed portion recessed toward the second substrate is provided in a first through-hole portion of the first substrate, and the first through-hole is formed at a bottom of the first recessed portion; 4. The high-frequency induction heating head according to claim 3, wherein a second recess recessed toward the first substrate is provided in the second through-hole portion of the second substrate, and the second through-hole is formed at the bottom of this second recess.

5. a first heat conductive sheet is provided between the first base body and the first core body, and a third through hole is provided in the first heat conductive sheet, through which the coil conductive tube passes; 5. A high-frequency induction heating head as described in claim 4, wherein a second heat conductive sheet is provided between the second base body and the first core body, and a fourth through hole is provided in this second heat conductive sheet, through which the conductive tube for the coil passes.

6. The first core body is configured by overlapping one end of a C-shaped first sub-core body and an inverted C-shaped second sub-core body, with the magnetic gap being formed by a gap between the other end of the first and second sub-core bodies, and a fifth through-hole penetrating the first and second sub-core bodies is provided at the overlapping portion of the first and second sub-core bodies, a sixth through-hole is provided in the first base body facing the fifth through-hole, and a sixth through-hole is provided in the second base body facing the fifth through-hole. a seventh through hole is provided in the first base body, and a second bolt is provided which passes from the sixth through hole side of the first base body, through the fifth through hole of the first and second sub-core bodies, and protrudes out of the seventh through hole of the second base body, or passes from the seventh through hole side of the second base body, through the fifth through hole of the first and second sub-core bodies, and protrudes out of the sixth through hole of the first base body, and a second nut is screwed onto the protruding portion of this second bolt.

7. 7. A high-frequency induction heating head as described in claim 6, wherein the first water channel opening of the first water channel of the first base is located rearward in the Y1 direction of the first base from the sixth through hole of the first base, and the first water channel communicating with this first water channel opening is extended to the tip side of the first base in the Y1 direction from the sixth through hole of the first base.

8. 8. A high-frequency induction heating head as described in claim 7, wherein the second water channel opening of the second water channel of the second base is located rearward in the Y1 direction of the second base from the seventh through hole of the second base, and the second water channel communicating with the second water channel opening is extended to the tip side of the second base in the Y2 direction from the seventh through hole of the second base.

9. 9. The high frequency induction heating head according to claim 8, wherein the first water passage in said first substrate and the second water passage in said second substrate are connected outside the first and second substrates.

10. 10. The high-frequency induction heating head according to claim 9, wherein the first insulator is a plate-shaped insulator interposed between the first and second bases, the first insulator having an eighth through hole, the first base having a ninth through hole opposite the eighth through hole, and the second base having a tenth through hole opposite the eighth through hole, and a third bolt for screw fastening is provided which penetrates the eighth through hole of the first insulator from the ninth through hole side of the first base and protrudes into the tenth through hole side of the second base, or which penetrates the eighth through hole of the first insulator from the tenth through hole side of the second base and protrudes into the ninth through hole side of the first base.

11. 11. The high frequency induction heating head according to claim 1, wherein at least one of the first substrate and the second substrate is made of copper or a metal material containing copper as a main component.

12. 12. A high frequency induction heating device comprising: a high frequency induction heating head according to any one of claims 1 to 11; a first power supply unit that supplies high frequency current to the first power supply unit and the second power supply unit of the high frequency induction heating head; and first cooling water supply means that supplies cooling water to the first water channel and the second water channel of the high frequency induction heating head.

13. a third substrate having a width direction dimension of X3, a longitudinal direction dimension of Y3 longer than X3, and a thickness direction dimension of Z3; and a fourth substrate having a width direction dimension of X4, a longitudinal direction dimension of Y4 longer than X4, and a thickness direction dimension of Z4, are disposed opposite each other at a predetermined interval in the Z3 and Z4 directions; Between the third and fourth base bodies, at the tip end sides in the Y3 and Y4 directions, a second core body having a substantially ring shape and having a magnetic gap at the tip end sides of the third and fourth base bodies, and a second coil body supplying magnetic flux to the second core body are arranged, a second insulator is disposed between the third and fourth base bodies and rearward of the second core body in the Y3 and Y4 directions; The third base body has a third water channel built therein or buried therein, and is provided with a third water channel port connected to the third water channel and a third power supply unit, The fourth base body has a fourth water channel built therein or buried therein, and is provided with a fourth water channel port connected to the fourth water channel and a fourth power supply unit, The second core body is formed into a substantially ring shape by overlapping one end of a C-shaped third sub-core body and one end of an inverted C-shaped fourth sub-core body, and forming the magnetic gap by a gap between the other end of the third and fourth sub-core bodies, and an eleventh through-hole penetrating the third and fourth sub-core bodies is provided at the overlapping portion of the third and fourth sub-core bodies, a twelfth through-hole is provided in the third substrate facing the eleventh through-hole, and a thirteenth through-hole is provided in the fourth substrate facing the eleventh through-hole; a fourth bolt is provided which passes through the 11th through-holes of the third and fourth sub-core bodies from the 12th through-hole side of the third base body and protrudes out of the 13th through-hole of the fourth base body, or passes through the 11th through-holes of the third and fourth sub-core bodies from the 13th through-hole side of the fourth base body and protrudes out of the 12th through-hole of the third base body, and a fourth nut is screwed onto the protruding portion of this fourth bolt; one end of a coil conductor constituting the second coil body is disposed between the bolt head of the fourth bolt and either the third base body or the fourth base body adjacent thereto, a central portion of this coil conductor is disposed in the ring-shaped through-hole portion of the second core body, and the other end of this coil conductor is disposed between the fourth nut and the other of the third base body or the fourth base body adjacent thereto, and the third base body and the fourth base body are electrically connected via the coil conductor; A high-frequency induction heating head in which at least a portion of at least one of the third water channel and the fourth water channel is arranged opposite a portion of the second core body in the Z3 or Z4 direction.

14. 14. The high-frequency induction heating head according to claim 13, wherein the fourth bolt and the fourth nut are made of metal, and at least one of the fourth bolt and the fourth nut is electrically non-conductive to at least one of the third base and the fourth base.

15. 15. The high frequency induction heating head according to claim 14, wherein a third heat conductive sheet is provided between the third substrate and the second core body, and a fourth heat conductive sheet is provided between the fourth substrate and the second core body.

16. A high-frequency induction heating head as described in claim 15, wherein the third water channel opening of the third water channel of the third base is located rearward in the Y3 direction of the third base from the twelfth through hole of the third base, and the third water channel communicating with the third water channel opening is extended to the tip side of the third base in the Y3 direction from the twelfth through hole of the third base.

17. A high-frequency induction heating head as described in claim 16, wherein the fourth water channel opening of the fourth water channel of the fourth base is located rearward in the Y4 direction of the fourth base from the thirteenth through hole of the fourth base, and the fourth water channel communicating with the fourth water channel opening is extended to the tip side of the fourth base in the Y4 direction from the thirteenth through hole of the fourth base.

18. 18. The high frequency induction heating head according to claim 17, wherein the third water passage of the third substrate and the fourth water passage of the fourth substrate are connected to each other.

19. 19. The high-frequency induction heating head according to claim 18, wherein the second insulator is a plate-shaped insulator interposed between the third and fourth bases, the second insulator having a fourteenth through hole, the third base having a fifteenth through hole opposite the fourteenth through hole, and the fourth base having a sixteenth through hole opposite the fourteenth through hole, and a fifth bolt for screw fastening is provided which projects from the fifteenth through hole side of the third base through the fourteenth through hole of the second insulator and into the sixteenth through hole side of the fourth base, or projects from the sixteenth through hole side of the fourth base through the fourteenth through hole of the second insulator and into the fifteenth through hole side of the third base.

20. 20. A high-frequency induction heating head according to claim 13, wherein at least one of the third substrate, the fourth substrate and the coil conductor is formed from copper or a metal material containing copper as its main component.

21. 21. A high frequency induction heating device comprising: a high frequency induction heating head according to any one of claims 13 to 20; a second power supply unit that supplies high frequency current to the third power supply unit and the fourth power supply unit of the high frequency induction heating head; and second cooling water supply means that supplies cooling water to the third water passage and the fourth water passage of the high frequency induction heating head.

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