JP2012170973A - Conductor connecting method, and conductor connecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a conductor by setting on a device in a state that an insulating coating is not peeled off.SOLUTION: The conductor connecting device forms a connecting part in which conductors are connected by heating the plurality of conductors coated with the insulating coating. An air passage 38 and a passage 41 for water for blowing away sludge are formed inside an induction heating coil 21 of an induction heating device. The air passage 38 and the passage 41 for water for blowing away sludge are communicated with each other through a communication hole 42. A plurality of ejection holes 39 communicated with the air passage are formed on an inner circumference surface 37 of the induction heating coil 21. The conductor is heated by the induction heating coil 21, thereby carbonizing the insulating coating. Then, a mixed fluid of air and the water for blowing away the sludge is injected from the ejection hole 39 to blow away the carbonized insulating coating. After completion of removal of the carbonized insulating coating, the conductor is heated again by the induction heating coil 21 to melt a core wire of the conductor and connect the core wires.

Description

  The present invention relates to a conductor coupling method and a conductor coupling apparatus used directly for carrying out this method.

  In Patent Document 1, when a plurality of conductors are coupled by brazing, a brazing material is sandwiched between conductors from which an insulating coating material has been peeled, and the heating coil and the insulating member are sandwiched and pressurized, and a high frequency is applied to the heating coil. A method and apparatus for brazing conductors by heating and melting a brazing material by passing an electric current is described.

Japanese Patent No. 2787838

However, as in the case described in Patent Document 1, in the conventional wire coupling method and wire coupling device, the insulating coating material coated on the wire must be peeled off before setting the wire to the wire coupling device. I had to. Therefore, there are problems that the number of processes increases and productivity is poor.
Therefore, the present invention provides a conductive wire coupling method and a conductive wire coupling device that can couple conductive wires even if the conductive coating is set in a device without peeling off the insulation coating.

In the conductive wire coupling method according to the present invention, the following means are employed in order to solve the above problems.
The invention according to claim 1 is a conductor in which at least two conductors (for example, a conductor 100 in an embodiment to be described later) coated with an insulating coating are coupled by a heating device (for example, an induction heating device 20 in an embodiment to be described later). A combination method,
Disposing at least two of the conducting wires in the heating device while being covered with the insulating coating; and
Heating the conductive wire by the heating device to melt or carbonize the insulating coating;
Blowing away the molten or carbonized insulating coating by spraying a fluid toward the molten or carbonized insulating coating; and
A step of further heating the conductive wire from which the insulating coating has been removed by the heating device to couple the conductive wires;
It is a conducting wire coupling method characterized by comprising.

According to a second aspect of the present invention, in the first aspect of the present invention, the fluid includes a liquid.
The invention according to claim 3 is the invention according to claim 1 or 2, wherein the heating device is configured by an induction heating device (for example, an induction heating device 20 in an embodiment to be described later) for induction heating the conductive wire. It is characterized by being.

Moreover, in the conducting wire coupling device according to the present invention, the following means are employed in order to solve the above problems.
The invention according to claim 4 is a conductor coupling device that forms a coupling portion in which conductors are coupled by heating at least two conductors (for example, a conductor 100 in an embodiment described later) covered with an insulating coating. For example, a conductor coupling device 1) in an embodiment to be described later,
A heating means for heating the conducting wire (for example, an induction heating coil 21, an AC power source 24, etc. in an embodiment described later);
Fluid ejecting means for ejecting fluid toward the conducting wire and blowing away the insulating coating heated and melted or carbonized by the heating means (for example, air passage 38, ejection holes 39, 86 in the embodiments described later) Sludge blowing water passages 41, 89, etc.),
With
The heating means performs heating when melting or carbonizing the insulating coating of the conductive wire and heating when bonding the conductive wires from which the insulating coating has been removed to form a joint. It is the conducting wire coupling device.

  The invention according to claim 5 is the invention according to claim 4, wherein the fluid ejected by the fluid ejecting means includes a liquid.

  The invention according to claim 6 is the invention according to claim 4 or claim 5, wherein the heating means is induced by induction heating means (for example, an induction heating coil 21 in an embodiment described later) for induction heating the conductor. It is configured.

  The invention according to claim 7 is the invention according to claim 6, wherein the heating means is a coil (for example, induction in an embodiment described later) connected to an AC power source (for example, an AC power supply 24 in the embodiment described later). Heating coil 21) and a conductor insertion space (for example, an opening 34 in an embodiment described later) surrounded by the coil, and the fluid ejecting means is a fluid passage formed inside the coil. (For example, the air passage 38 and sludge blowing water passages 41 and 89 in the embodiments described later) and the ejection holes (for example, the ejection holes 39 and 86 in the embodiments described later) that open from the fluid passage toward the conductor insertion space. And).

  The invention according to claim 8 is the invention according to claim 7, wherein the fluid passage includes a gas passage through which gas passes (for example, an air passage 38 in an embodiment described later) and a liquid passage through which liquid passes (for example, A sludge blow-off water passage 41) in an embodiment to be described later, and a communication passage (for example, a communication hole 42 in an embodiment to be described later) communicating the gas passage and the liquid passage. A mixed fluid of the gas and the liquid is generated by passing through the communication path, and the mixed fluid is ejected from the ejection hole.

The invention according to claim 9 is the invention according to claim 8, wherein the fluid ejecting means is
A gas supply setting means (for example, an air adjustment valve 27 in an embodiment described later) capable of setting the presence or absence of the supply of the gas to the gas passage;
Liquid supply setting means (for example, a switching valve 28 in an embodiment to be described later) capable of setting whether or not the liquid is supplied to the liquid passage;
Control means for controlling the gas supply setting means and the liquid supply setting means to switch between the presence / absence of the gas supply to the gas passage and the presence / absence of the liquid supply to the liquid passage (for example, implementation described later) Induction heating coil integrated control unit 13 in the example, sludge blowing water control unit 14),
With
The control means supplies the liquid to the liquid passage and supplies the gas to the gas passage to inject a fluid mixture of the liquid and the gas from the ejection hole and then stop supplying the fluid. The supply of the gas to the gas passage is stopped after the supply of the liquid to the liquid passage is stopped.

  The invention according to claim 10 is the invention according to claim 7, wherein the fluid passage includes a gas passage through which gas passes (for example, an air passage 38 in an embodiment described later) and a liquid passage through which liquid passes (for example, A sludge blow-off water passage 89 in an embodiment to be described later, and a communication passage (for example, a communication passage 87 in an embodiment to be described later) that communicates the gas passage and the ejection hole. The flow passage cross-sectional area of the communication passage is smaller than the flow passage cross-sectional area of the gas passage.

  According to the invention which concerns on Claim 1, after arrange | positioning to a heating apparatus with the state which covered the conducting wire with the insulation coating, the insulated coating which was coat | covered can be removed, and conducting wires can be couple | bonded. Therefore, the process of removing the insulating coating before the conductor is placed in the heating device is not necessary, and the number of processes can be reduced.

  According to the second aspect of the present invention, the liquid blown toward the heated conductor or the insulating coating is vaporized, and thus the volume expansion suddenly occurs around the molten or carbonized insulating coating, and the liquid is melted or carbonized. The insulation coating can be effectively blown away and removed.

  According to the third aspect of the present invention, the conductive wire can be heated in a non-contact manner by the induction heating device to melt or carbonize the insulating coating. Therefore, when the fluid is sprayed on the molten or carbonized insulating coating, induction heating is performed. It can suppress that an apparatus becomes obstructive of the spray of a fluid.

  According to the fourth aspect of the present invention, since the conducting wire is heated by the heating means, the insulating coating is removed by the fluid ejecting means, and the conducting wires can be joined together, the insulating coating is provided before placing the conducting wire on the heating means. A process for removing the film becomes unnecessary, and the number of processes can be reduced.

  According to the fifth aspect of the present invention, the liquid blown toward the heated conductor or the insulating coating is vaporized, and thus the volume expansion suddenly occurs around the molten or carbonized insulating coating, and the liquid is melted or carbonized. The insulation coating can be effectively blown away and removed.

  According to the sixth aspect of the present invention, the conductive wire can be heated in a non-contact manner by the induction heating means to melt or carbonize the insulating coating. Therefore, when the fluid is sprayed on the molten or carbonized insulating coating, induction heating is performed. It can suppress that an apparatus becomes obstructive of the spray of a fluid.

  According to the invention which concerns on Claim 7, since the fluid channel | path is formed in the inside of a coil, size reduction of an apparatus can be achieved compared with the case where a coil and a fluid channel | path are provided separately.

  According to the invention which concerns on Claim 8, since the fluid mixture of gas and liquid can be ejected from a common ejection hole, compared with the case where the ejection hole which injects gas and the ejection hole which injects a liquid are provided, respectively. Configuration is simplified.

  According to the invention which concerns on Claim 9, it can suppress that an unnecessary liquid remains in a gas channel.

  According to the tenth aspect of the present invention, the flow passage cross-sectional area of the communication passage is smaller than the flow passage cross-sectional area of the gas passage. Pressure is generated and the liquid in the liquid passage is sucked into the communication passage, and the gas and the liquid can be mixed in the communication passage, and the mixed fluid can be ejected from the ejection holes. As a result, a mixed fluid of gas and liquid can be ejected without pressurizing the sludge blowing water. In addition, since a mixed fluid of gas and liquid can be ejected from a common ejection hole, the configuration is simplified as compared with the case where an ejection hole for ejecting gas and an ejection hole for ejecting liquid are provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram in Example 1 of the conducting wire coupling apparatus used directly for implementation of the conducting wire coupling method according to the present invention. It is a front view of the conducting wire coupling device in Example 1. It is a perspective view which shows the principal part of the conducting wire coupling device in Example 1. It is a top view of the said principal part of the conducting wire coupling device in Example 1. FIG. It is a front view of the said principal part of the conducting wire coupling device in Example 1. It is AA sectional drawing of FIG. FIG. 6 is a view taken in the direction of arrow B in FIG. 5. It is a flowchart which shows the conducting wire coupling method using the conducting wire coupling device of Example 1. It is a perspective view which shows the principal part in the conducting wire coupling device of Example 2 of this invention. It is a top view of the said principal part of the conducting wire coupling device in Example 2. It is a front view of the said principal part of the conducting wire coupling device in Example 2. It is CC sectional drawing of FIG. It is D arrow line view of FIG. It is a perspective view which shows the principal part in the conducting wire coupling device of Example 3 of this invention. It is an end view of the EE cross section of FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a conducting wire coupling method according to the present invention and a conducting wire coupling apparatus used directly for carrying out this conducting wire coupling method will be described with reference to the drawings of FIGS.
<Example 1>
First, Embodiment 1 of the present invention will be described with reference to the drawings of FIGS.
FIG. 1 is a schematic configuration diagram of a conductor coupling device according to a first embodiment, and FIG. 2 is a schematic front view thereof.
As shown in FIG. 1, the lead wire coupling device 1 includes an induction heating device (heating device) 20 provided with an induction heating coil (heating means) 21, and a power supply control unit that controls the current and frequency applied to the induction heating coil 21. 11, a cooling water control unit 12 that controls the amount of cooling water supplied to the induction heating coil 21, an induction heating coil integrated control unit (control means) 13 that controls the position control of the induction heating coil 21 and the air supply amount, and sludge And a sludge discharge water control unit (control means) 14 for controlling the supply water supply timing.

  As shown in FIGS. 1 and 2, the induction heating device 20 includes a metal induction heating coil 21, a metal substrate 22 connected to the induction heating coil 21, a support member 29 that supports the substrate 22, The supporting member 29 is connected to the induction heating coil support shaft 23 for vertically moving the induction heating coil 21, the motor 30 for vertically moving the induction heating coil 21, and an alternating current is applied to the induction heating coil 21. AC power supply 24, a chuck 25 that supports and fixes a conductor bundle 101 in which a plurality of conductors 100 are bundled, a chuck support shaft 26 that supports the chuck 25, and a cooling water circulation device that supplies cooling water to the induction heating coil 21 60, an air adjustment valve (gas supply setting means) 27 for adjusting the amount of air supplied to the induction heating coil 21, and a sludge blown supply to the induction heating coil 21 Switching valve for switching supply and stop of and a (liquid supply setting means) 28.

  As shown in FIGS. 3 and 4, the induction heating coil 21 has a substantially U shape by a circular arc part 31 having a substantially semicircular arc shape on the front end side and a linear part 32 linearly extending from both ends of the circular arc part 31 in plan view. It is formed in a letter shape. A pair of substrates 22, 22 sandwiching an insulating material 33 is sandwiched between both linear portions 32, 32, and the linear portion 32 and the substrate 22 are connected on each side with the insulating material 33 interposed therebetween. ing. Further, a substantially circular opening (conductor insertion space) 34 penetrating in the vertical direction is formed between the arc portion 31 and the substrate 22 at the center of the arc portion 31, and the induction heating coil 21 is supported by the support member. When set on the induction heating coil support shaft 23 via 29, the axis of the opening 34 is directed in the vertical direction. An AC power supply 24 is connected to the substrates 22 and 22 so that an AC current can be applied to the induction heating coil 21. The AC power supply 24 is connected to the power supply control unit 11 so that a desired AC current can be applied to the induction heating coil 21 in accordance with an instruction from the power supply control unit 11.

The induction heating coil 21 includes an inner tube portion 35 disposed on the inner side in a plan view and an outer tube portion 36 disposed on the outer side of the inner tube portion 35, and the inner tube portion 35 in the linear portion 32. Extends rearward (in a direction away from the arc portion 31) from the outer tube portion 36.
As shown in FIG. 6, the inner pipe portion 35 has a triangular cross section whose inner peripheral surface 37 extends downward, and the inside is an air passage (gas passage, fluid passage) 38 through which air can flow. The air passage 38 is closed at both longitudinal ends of the inner tube portion 35.
An inner peripheral surface 37 of the inner tube portion 35 in the arc portion 31 has a conical shape that spreads downward, and a circular ejection hole 39 having an axial center toward the center of the opening 34 is predetermined in the circumferential direction. A plurality are provided at intervals.
The outer pipe portion 36 has a rectangular cross section, and the inside thereof is a cooling water passage 40 through which cooling water can flow. The cooling water passage 40 is closed at both ends in the longitudinal direction of the outer pipe portion 36.

The inner tube portion 35 and the outer tube portion 36 are connected and fixed in a state where the inner peripheral surface of the outer tube portion 36 is in surface contact with the outer peripheral surface of the inner tube portion 35. A sludge blowing water passage (liquid passage, fluid passage) 41 through which the sludge blowing water can flow is connected to the connecting portion between the inner pipe portion 35 and the outer pipe portion 36, and the inner pipe portion 35 and the outer pipe portion 36 are in contact with each other. It is formed along the surface. The sludge blowing water passage 41 is closed in the vicinity of both end portions in the longitudinal direction of the outer pipe portion 36.
In addition, the inner pipe portion 35 in the arc portion 31 has a communication hole that communicates the air passage 38 and the sludge blowing water passage 41 at a position facing the ejection hole 39 (in other words, the same position in the circumferential direction as the ejection hole 39). A (communication path) 42 is provided in a pair with the ejection hole 39.

The air passage 38 is connected to the air supply pipes 43 and 43 in the vicinity of the respective end portions in the longitudinal direction, and each air supply pipe 43 includes an air supply main pipe 44 and an air adjustment valve 27 as shown in FIG. Via an air supply device (not shown) including a fan or the like. Supply / stop of air to the air passage 38 and control of the air supply amount are performed by the induction heating coil integrated control unit 13 controlling the opening / closing of the air adjustment valve 27 and the valve opening degree.
When air is supplied to the air passage 38 via the air supply main pipe 44, air is jetted from the ejection hole 39 toward the center of the opening 34.

The sludge blow-off water passage 41 is connected to sludge blow-off water supply pipes 45, 45 in the vicinity of the respective end portions in the longitudinal direction, and each sludge blow-off water supply pipe 45 is connected to the sludge blow-off water supply main pipe 46 as shown in FIG. The sludge blowing water supply device (not shown) is connected via a switching valve 28. The supply / stop of the sludge blowing water to the sludge blowing water passage 41 is performed by the sludge blowing water control unit 14 controlling the opening and closing of the switching valve 28.
Then, when air is supplied to the air passage 38 via the air supply main pipe 44 and the sludge blowing water is supplied to the sludge blowing water passage 41 via the sludge blowing water supply main pipe 46, the sludge blowing water is converted into the sludge blowing water passage 41. Then, the air flows out through the communication hole 42 toward the ejection hole 39, the sludge blowing water and air are mixed in the air passage 38 or the ejection hole 39, and this gas-liquid mixed fluid is directed from the ejection hole 39 toward the center of the opening 34. Be injected.

The cooling water passage 40 is connected to a cooling water supply pipe 47 in the vicinity of one end in the longitudinal direction, and is connected to a cooling water discharge pipe 48 in the vicinity of the other end. The cooling water supply pipe 47 and the cooling water discharge pipe 48 are The cooling water circulation device 60 is connected.
The cooling water circulation device 60 is pumped by a cooling water tank 61 that stores cooling water, a cooling water pump 62 that pumps cooling water from the cooling water tank 61, a motor 63 that drives the cooling water pump 62, and the cooling water pump 62. A cooling water pipe 64 for supplying the cooling water to the cooling water passage 40 of the induction heating coil 21, a cooling water pipe 65 for returning the cooling water discharged from the cooling water passage 40 to the cooling water tank 61, and the cooling water pipe 65 are provided. The cooling water supply pipe 47 is connected to the cooling water pipe 64, and the cooling water discharge pipe 48 is connected to the cooling water pipe 65. Thereby, the cooling water of the cooling water tank 61 is caused to flow through the cooling water passage 40 of the heating coil 21 to cool the heating coil 21, and the heated cooling water is cooled by the heat exchanger 66 and returned to the cooling water tank 61. The cooling water is circulated and used.

  The cooling water pipe 64 is provided with a relief valve 67, a cooling water flow meter 68 for detecting the cooling water supply flow rate, and a cooling water temperature sensor 69 for detecting the cooling water temperature. 68 and the coolant temperature sensor 69 each output an output signal corresponding to the detected value to the coolant control unit 12. The operation stop of the cooling water pump 32 and the cooling water flow rate control are performed by the cooling water control unit 12 controlling the motor 33 via the inverter 40 based on the output signals of the cooling water flow meter 68 and the cooling water temperature sensor 69. Done.

The induction heating device 20 includes an infrared thermometer 49 that detects the temperature of the central portion of the opening 34 of the induction heating coil 21 in a non-contact manner. The infrared thermometer 49 integrates an output signal corresponding to the detected value with the induction heating coil. Output to the control unit 13.
Further, the motor 30 for adjusting the vertical position of the induction heating coil 21 is controlled by the induction heating coil integrated control unit 13. When the motor 30 is driven, the support member 29 moves in the vertical direction along the induction heating coil support shaft 23, whereby the height of the induction heating coil 21 can be adjusted to a desired position.

The chuck 25 is composed of a pair of chuck members 25a and 25b that sandwich the conductive wire bundle 101 from both sides in plan view, and is movable in a direction approaching and separating from each other. The chuck 25 is closed to hold the conductive wire bundle 101. When sandwiched, the conductive wire bundle 101 is arranged at the center of the opening 34 of the induction heating coil 21.
Further, the induction heating coil integrated control unit 13 is connected with a power supply control unit 11, a cooling water control unit 12, and a sludge removal water control unit 14 so that each unit 11, 12, 14 can be controlled comprehensively. It is configured.

Next, a method for coupling the conductors 100 of the conductor bundle 101 using the induction heating apparatus 1, that is, a conductor coupling method will be described with reference to the flowchart of FIG.
First, in step S101, a conductor bundle 101 is prepared by bundling a plurality of (two or more) conductors 100 in a state where the core wire is covered with an insulating coating (both not shown), and the conductor bundle 101 is induction-heated. The lead wire bundle 101 is supported and fixed by the chuck 25 through the opening 34 of the coil 21.
Next, it progresses to step S102, and after adjusting the height position of the induction heating coil 21 so that the induction heating coil 21 is arrange | positioned at the same height as the to-be-coupled position of the conducting wire bundle 101, it is alternating current to the induction heating coil 21. An electric current is applied and each electric wire 100 of the electric wire bundle 101 is induction-heated. Further, the cooling water pump 62 is appropriately driven to flow cooling water through the cooling water passage 40 of the induction heating coil 21 to cool the induction heating coil 21.

Next, it progresses to step S103 and the temperature in the opening 34 of the induction heating coil 21, ie, the temperature of the to-be-joined part of the wire bundle 101, is monitored by the infrared thermometer 49.
Next, it progresses to step S104 and it is determined whether the temperature of the to-be-joined part has reached the temperature (henceforth carbonization temperature) which carbonizes the insulation coating of the electric wire 100.
If the determination result in step S104 is “NO”, the temperature of the coupled portion has not reached the carbonization temperature, and the process returns to step S103.

  When the determination result in step S104 is “YES”, the temperature of the coupled portion has reached the carbonization temperature, so the process proceeds to step S105, the application of the alternating current to the induction heating coil 21 is stopped, and the induction heating is performed. Air is supplied to the air passage 38 of the coil 21, and sludge blow-off water is supplied to the sludge blow-off water passage 41, and a gas-liquid mixed fluid in which the sludge blow-off water and air are mixed is discharged from the ejection hole 39 to the conductor bundle 101. It injects toward a joined part.

When the gas-liquid mixed fluid is sprayed onto the coupled portion of the wire bundle 101 in this way, the sludge blowing water is vaporized when sprayed on the heated wire 100 or the insulation coating, and around the insulation coating that has been melted or carbonized. Volume expansion occurs abruptly, and in cooperation with the air flow, the molten or carbonized insulation coating can be effectively blown away.
In addition, the form of the insulation coating of the conducting wire 100 at the time of injecting the gas-liquid mixed fluid to the coupled portion of the conducting wire bundle 101 may be a molten state or a carbonized state, but it is more than the molten form. The carbonized form has an advantage that it is easier to prevent the insulating coating from remaining on the core wire.

Next, the process proceeds to step S106, and it is determined whether or not a predetermined time has elapsed since the supply of sludge blowing water and air was started.
When the determination result in step S106 is “NO”, the supply of sludge-flushing water and air is continued until the predetermined time has elapsed.
If the determination result in step S106 is “YES”, it is determined that the removal of the insulation coating is completed, and that the primary cooling for the coupled portion by the injection of sludge-flushing water and air that is subsequently performed after the removal is completed, Proceeding to S107, the supply of sludge blow-off water is stopped. In addition, the supply of air to the air passage 38 is continued without stopping, and only air is jetted from the ejection hole 39 toward the coupled portion of the conductor bundle 101 to perform secondary cooling on the coupled portion.
Next, it progresses to step S108 and it is determined whether predetermined time passed since the sludge removal water was stopped.
If the determination result in step S108 is “NO”, the air supply is continued until the predetermined time has elapsed.
When the determination result in step S108 is “YES”, it is determined that the coupled portion from which the insulation coating has been removed from each conductive wire 100 has been cooled to room temperature, the process proceeds to step S109, and the supply of air is stopped.

  Next, it progresses to step S110, an alternating current is applied to the induction heating coil 21 again, each electric wire 100 from which insulation coating was removed is induction-heated, the core wire of each electric wire 100 is melt | dissolved, and core wires are couple | bonded. . Also at this time, the cooling water pump 62 is appropriately driven to flow cooling water through the cooling water passage 40 of the induction heating coil 21 to cool the induction heating coil 21. The heating temperature for melting the core wire is higher than the heating temperature for melting or carbonizing the insulating coating.

Next, it progresses to step S111, stops electricity supply to the induction heating coil 21, and further proceeds to step S112 to supply air to the air passage 38 of the induction heating coil 21 and to join the wire bundle 101 from the ejection hole 39 The joint is cooled by injecting air into the part.
After cooling the coupling portion, the process proceeds to step S113 to stop the supply of air, and further proceeds to step S114, where the chuck 25 is opened to remove the conductor bundle 101, and the coupling of the conductor bundle 101 is completed.

  According to the conductor coupling device 1 and the conductor coupling method, after the conductor 100 is set on the induction heating coil 21 while being covered with the insulating coating, the coated insulating coating is removed and the conductors 100 are coupled to each other. can do. Therefore, the process of removing the insulation coating in advance before setting the conducting wire 100 to the induction heating coil 21 becomes unnecessary, and the number of processes can be reduced.

  In addition, since the conductive wire 100 can be heated in a non-contact manner by the induction heating coil 21 to melt or carbonize the insulation coating, the induction heating coil 21 is used when spraying sludge-flushing water and air to the molten or carbonized insulation coating. Does not hinder the spraying of these fluids.

  Further, as described above, since the gas-liquid mixed fluid of water and air for sludge blowing is sprayed to the coupled portion of the heated conductor bundle 101, it is sprayed on the heated conductor 100 or the insulation coating. As the water vaporizes, volume expansion occurs rapidly around the molten or carbonized insulation coating, and in cooperation with the air flow, the molten or carbonized insulation coating can be effectively blown away and removed.

  In addition, after removing the insulating coating, the temperature of the bonded portion is once lowered to room temperature, and then the bonded portion is heated again to melt the core wire of the conducting wire 100, so that the melting and bonding are performed a plurality of times. At this time, it is possible to suppress the occurrence of variations in the joined state due to the coupling portion. In addition, since the air and the sludge blowing water are injected at the time of the primary cooling for once lowering the temperature of the coupled portion, the coupled portion can be cooled in a shorter time than when the coupled portion is cooled only by air. .

Furthermore, according to the conductor coupling device 1, the air passage 39 and the sludge blow-off water passage 41 are formed inside the induction heating coil 21, so that members having these passages are provided separately from the induction heating coil 21. Compared to the case, the number of parts can be reduced, the apparatus configuration is simplified, and the apparatus can be miniaturized. Further, since the gas-liquid mixed fluid of the sludge blowing water and air can be ejected from the common ejection hole 39, the configuration is compared with the case where each of the ejection hole for ejecting air and the ejection hole for ejecting the sludge blowing water is provided. Becomes easier.
In addition, when the supply of sludge blowing water and air is stopped, the air is stopped after the sludge blowing water is first stopped, so that unnecessary sludge blowing water is prevented from remaining in the air passage 38. can do.

<Example 2>
Next, a second embodiment of the conductor coupling device 1 according to the present invention will be described with reference to the drawings of FIGS. The drawings in FIGS. 9 to 13 correspond to the drawings in FIGS. 3 to 7 of the first embodiment, respectively.
The conductor coupling device 1 of the second embodiment is different from that of the first embodiment in the configuration of the induction heating coil 21. Hereinafter, the same mode parts will be simply described with the same reference numerals, and the differences will be described in detail.

  As shown in FIGS. 9 and 10, the induction heating coil 21 according to the second embodiment is substantially U-shaped in plan view, has a circular arc portion 31 and a straight portion 32, and between the straight portions 32 and 32. A point where the pair of substrates 22 and 22 and the insulating material 33 are sandwiched, a point where a substantially circular opening 34 penetrating in the vertical direction is formed at the center of the arc portion 31, and the induction heating coil 21 is supported by the support member 29. An alternating current can be applied to the induction heating coil 21 via the substrates 22 and 22 in that the axis of the opening 34 is directed in the vertical direction when the induction heating coil support shaft 23 is set via The point is the same as the induction heating coil 21 of the first embodiment.

However, in the induction heating coil 21 of the first embodiment, the air passage 38 and the sludge blowing water passage 41 are provided in parallel on the horizontal plane. However, in the induction heating coil 21 of the second embodiment, these passages are arranged in the vertical direction. They are arranged in layers.
More specifically, the induction heating coil 21 according to the second embodiment includes a lower tube portion 81 disposed on the lower side in a front view and an upper tube portion 82 disposed on the upper side of the lower tube portion 81. In the portion 32, the lower tube portion 81 extends rearward (in a direction away from the arc portion 31) from the upper tube portion 82.

As shown in FIG. 12, the lower pipe portion 81 has a triangular shape with an inner peripheral surface 83 extending downward, and the inside is an air passage 38 through which air can flow. The air passage 38 is closed at both ends in the longitudinal direction.
The inner peripheral surface 83 of the lower tube portion 81 in the arc portion 31 has a conical shape that spreads downward downward, and here, a circular ejection hole 39 having an axial center toward the center of the opening 34 is provided in the circumferential direction. A plurality are provided at predetermined intervals.

The upper pipe portion 82 has a triangular cross section whose inner peripheral surface 84 extends upward, and the inside is a cooling water passage 40 through which cooling water can flow, and is cooled at both longitudinal ends of the upper pipe portion 82. The water passage 40 is closed.
The inner peripheral surface 84 of the upper tube portion 82 in the arc portion 31 has a conical shape that spreads upward at the end.
In the arc portion 31, the outer diameter of the lower tube portion 81 and the outer diameter of the upper tube portion 82 are the same, and the inner diameter of the lower tube portion 81 is slightly smaller than the inner diameter of the upper tube portion 82. The height dimension of the pipe part 81 and the height dimension of the upper pipe part 82 are substantially the same height.

The lower tube portion 81 and the upper tube portion 82 are connected and fixed in a state where the lower surface of the upper tube portion 82 is in surface contact with the upper surface of the lower tube portion 81. A sludge blowing water passage 41 through which sludge blowing water can flow is formed along the contact surface between the lower pipe portion 81 and the upper pipe portion 82 at the connecting portion between the lower pipe portion 81 and the upper pipe portion 82. Has been. The sludge blowing water passage 41 is closed in the vicinity of both end portions in the longitudinal direction of the upper pipe portion 82.
Further, in the lower pipe portion 81 in the arc portion 31, a communication hole 42 communicating with the air passage 38 and the sludge blowing water passage 41 at the same position in the circumferential direction as the ejection hole 39 is paired with the ejection hole 39. Is provided.
In FIG. 12, the ejection hole 39 is formed substantially parallel to the contact surfaces of the lower tube portion 81 and the upper tube portion 82, that is, substantially parallel to the horizontal surface. However, the lower tube portion is angled upward. You may form so that the contact surface of 81 and the upper side pipe part 82 may be turned to the height which positions.

  In the induction heating coil 21 of the second embodiment, air supply pipes 43 and 43 are connected to the air passage 38 in the vicinity of the respective end portions in the longitudinal direction so that air can be supplied through the air supply main pipe 44. On the other hand, the sludge blow-off water passage 41 is connected to sludge blow-off water supply pipes 45, 45 in the vicinity of the respective ends in the longitudinal direction so that sludge blow-off water can be supplied through the sludge blow-off water supply main pipe 46. The cooling water passage 40 is connected to a cooling water supply pipe 47 in the vicinity of one end in the longitudinal direction, and connected to a cooling water discharge pipe 48 in the vicinity of the other end, and the cooling water can be circulated by the cooling water circulation device 60. This is the same as the induction heating coil 21 of the first embodiment.

  In the induction heating coil 21 of the second embodiment configured as described above, air is supplied to the air passage 38 via the air supply main pipe 44, and sludge is discharged to the sludge discharge water passage 41 via the sludge blowing water supply main pipe 46. When the water is supplied, the sludge blowing water flows from the sludge blowing water passage 41 through the communication hole 42 to the air passage 38, and the sludge blowing water and air are mixed in the air passage 38 or the ejection hole 39. Can be ejected from the ejection hole 39 toward the center of the opening 34.

  And also in the induction heating coil 21 of Example 2, when the gas-liquid mixed fluid of the sludge blowing water and air is sprayed to the coupled portion of the heated wire bundle 101, the sludge blowing water is heated to the heated wire 100 or Vaporization occurs around the insulation coating that has vaporized and melted or carbonized when sprayed on the insulation coating, and effectively blows away the molten or carbonized insulation coating in cooperation with the air flow. Can do.

Therefore, when conducting the same wire coupling method as in Example 1 using the wire coupling device 1 having the induction heating coil 21 of Example 2, the induction heating coil 21 remains in a state where the conductor 100 is covered with the insulating coating. After setting, the conductive coatings 100 can be coupled to each other by removing the coated insulation coating.
Further, in the second embodiment, the induction heating coil 21 has a width larger than that in the first embodiment because the air passage 38, the sludge blow-off water passage 41, and the cooling water passage 40 are arranged in the vertical direction. Even in a narrow space, the induction heating coil 21 can be inserted to perform conducting wire coupling.

<Example 3>
Next, a third embodiment of the conductor coupling device 1 according to the present invention will be described with reference to the drawings of FIGS.
The conductor coupling device 1 of the third embodiment is different from that of the second embodiment in the configuration of the induction heating coil 21. Hereinafter, the same mode parts will be simply described with the same reference numerals, and the differences will be described in detail.

  As shown in FIGS. 14 and 15, the induction heating coil 21 of Example 3 is substantially U-shaped in plan view, has a circular arc portion 31 and a straight portion 32, and between the straight portions 32 and 32. A point where the pair of substrates 22 and 22 and the insulating material 33 are sandwiched, a point where a substantially circular opening 34 penetrating in the vertical direction is formed at the center of the arc portion 31, and the induction heating coil 21 is supported by the support member 29. An alternating current can be applied to the induction heating coil 21 via the substrates 22 and 22 in that the axis of the opening 34 is directed in the vertical direction when the induction heating coil support shaft 23 is set via The point which the upper side pipe part 82 which has the cooling water channel | path 40 is piled up on the lower side pipe part 81 which has the point and the air passage 38 is the same as the induction heating coil 21 of Example 2. FIG.

  However, in the induction heating coil 21 of the third embodiment, the cross-sectional shape of the lower pipe portion 81 is substantially rectangular, and the cross-sectional shape of the air passage 38 is also rectangular. In the upper part of the peripheral surface 85, an ejection hole 86 formed continuously over the entire circumference is provided in a slit shape. In addition, a communication passage 87 that connects the ejection hole 86 and the air passage 38 is formed in the lower tube portion 81 of the arc portion 31 over the entire circumference of the arc portion 31. The communication passage 87 extends obliquely upward from the lower portion of the air passage 38, and its extension line is set so as to go to the center of the opening 34 of the arc portion 31.

In addition, in the induction heating coil 21 of the third embodiment, a second lower pipe portion 88 having a substantially U-shaped cross section that opens upward is further below the lower pipe portion 81 from the arc portion 31 to the linear portion 32. The lower tube portion 81 and the second lower tube portion 88 are connected and fixed in a state where the upper surface of the second lower tube portion 88 is in surface contact with the lower surface of the lower tube portion 81. In the arc portion 31, the outer diameter of the second lower tube portion 88 and the outer diameter of the lower tube portion 81 are the same, and the inner diameter of the second lower tube portion 88 is the same as the lower inner diameter of the upper tube portion 82. It has become.
A space surrounded by the lower pipe portion 81 and the second lower pipe portion 88 is a sludge blowing water passage 89, and the sludge blowing water passage 89 is at both longitudinal ends of the second lower pipe portion 88. It is blocked in the vicinity.

Further, the lower pipe portion 81 in the arc portion 31 is provided with a plurality of second communication passages 90 communicating with the sludge blow-off water passage 89 and the communication passage 87 at predetermined intervals in the circumferential direction. The second communication passage 90 has a circular cross section and is arranged with its axis centered in the vertical direction.
Here, comparing the cross-sectional areas (hereinafter referred to as flow-path cross-sectional areas) obtained by cutting each flow path at right angles to the fluid flow direction, the flow-path cross-sectional area S2 of the communication passage 87 is equal to the flow of the air passage 38. The flow passage cross-sectional area S3 of the second communication passage 90 is smaller than the flow cross-sectional area S1, and the flow passage cross-sectional area S2 of the communication passage 87 is smaller (S1>S2> S3).

  In the induction heating coil 21 according to the third embodiment, the air passage 38 is configured so that air supply pipes 43 and 43 are connected to the vicinity of each end in the longitudinal direction so that air can be supplied via the air supply main pipe 44. On the other hand, the sludge blow-off water passage 89 is connected to sludge blow-off water supply pipes 45, 45 in the vicinity of the respective ends in the longitudinal direction so that the sludge blow-off water can be supplied. The cooling water supply pipe 47 is connected in the vicinity of one end portion in the longitudinal direction, the cooling water discharge pipe 48 is connected in the vicinity of the other end portion, and the cooling water circulation device 60 is configured so that the cooling water can be circulated. This is the same as the induction heating coil 21 of Example 1.

  In the induction heating coil 21 according to the third embodiment configured as described above, when air is supplied to the air passage 38 via the air supply main pipe 44, the air flows from the air passage 38 to the communication passage 87 and is opened from the ejection hole 86 to the opening 34. It is injected toward the center of the. Here, since the flow passage cross-sectional area S2 of the communication passage 87 is smaller than the flow passage cross-sectional area S1 of the air passage 38, the air flows at a high speed when passing through the communication passage 87. As a result, a negative pressure is generated in the communication passage 87, the sludge blowing water in the sludge blowing water passage 89 is sucked into the communication passage 87 through the communication passage 90, and the air and the sludge blowing water are mixed in the communication passage 87. The As a result, this gas-liquid mixed fluid can be ejected from the ejection hole 86 toward the center of the opening 34.

  Also in the induction heating coil 21 of the third embodiment, when the gas-liquid mixed fluid of sludge blowing water and air is sprayed to the coupled portion of the heated wire bundle 101, the sludge blowing water is heated to the heated wire 100 or Vaporization occurs around the insulation coating that has vaporized and melted or carbonized when sprayed on the insulation coating, and effectively blows away the molten or carbonized insulation coating in cooperation with the air flow. Can do.

  Therefore, when the same lead wire coupling method as that of the first embodiment is performed using the lead wire coupling device 1 having the induction heating coil 21 of the third embodiment, the induction heating coil 21 remains covered with the insulating coating 100. After setting, the conductive coatings 100 can be coupled to each other by removing the coated insulation coating.

  Further, in the case of the induction heating coil 21 of the third embodiment, the gas-liquid mixed fluid can be ejected if the sludge blowing water is not pressurized and supplied at about atmospheric pressure. Since it is not necessary to pressurize the sludge blowing water, the switching valve 28 for switching the presence or absence of water injection provided in the sludge blowing water supply main pipe 46 in the first and second embodiments can be omitted. However, when the switching valve 28 is eliminated, it is not possible to cool the coupled portion of the wire bundle 101 by injecting only air, but it is sufficient to cover the amount by cooling with the gas-liquid mixed fluid. . In this case, steps S107 and S108 in the flowchart of FIG. 8 may be eliminated and the process may proceed from step S106 to step S109.

[Other Examples]
The present invention is not limited to the embodiment described above.
For example, in the above-described embodiment, the induction heating means (induction heating coil 21) is used as the heating device (heating means). However, the present invention is not limited to this, and fusing can also be used.
In the above-described first and second embodiments, the passage that directly communicates with the ejection hole 39 that ejects fluid is the air passage 38, and the passage that communicates with the air passage 38 via the communication hole 42 is the sludge blowing water passage 41. This arrangement may be reversed, and a passage directly communicating with the ejection hole 39 for ejecting fluid may be used as the sludge blowing water passage 41, and a passage communicating with the sludge blowing water passage 41 via the communication hole 42 may be referred to as the air passage 38. . In this way, the gas-liquid mixed fluid can be ejected from the ejection holes 39 while pushing out the sludge blowing water with the pressure of the air, so that the water pressure of the sludge blowing water can be lowered.
Moreover, in Example 3 mentioned above, although the ejection hole 86 was continuously provided in the inner peripheral surface 85 of the lower side pipe part 81 in the circular arc part 31 over the circumferential direction periphery, Example 1, Similarly to the case 2, the ejection holes 86 can be provided at predetermined intervals in the circumferential direction.

1 Lead wire coupling device 13 Induction heating coil integrated control unit (control means, fluid ejection means)
14 Sludge flying water control unit (control means, fluid ejection means)
20 Induction heating device (heating device)
21 Induction heating coil (heating means, induction heating means)
24 AC power supply (heating means)
27 Air adjustment valve (gas supply setting means, fluid ejection means)
28 switching valve (liquid supply setting means, fluid ejection means)
34 Opening (conductor insertion space)
38 Air passage (gas passage, fluid passage, fluid ejection means)
39,86 ejection hole (fluid ejection means)
41, 89 Sludge blowing water passage (liquid passage, fluid passage, fluid ejection means)
42 communication hole (communication path, fluid path, fluid ejection means)
87 Communication passage (fluid passage, fluid ejection means)
100 conductors

Claims (10)

A wire bonding method for bonding at least two wires covered by an insulating coating by a heating device,
Disposing at least two of the conducting wires in the heating device while being covered with the insulating coating; and
Heating the conductive wire by the heating device to melt or carbonize the insulating coating;
Blowing away the molten or carbonized insulating coating by spraying a fluid toward the molten or carbonized insulating coating; and
A step of further heating the conductive wire from which the insulating coating has been removed by the heating device to couple the conductive wires;
A conductive wire coupling method comprising:   The wire coupling method according to claim 1, wherein the fluid includes a liquid.   The said heating apparatus is comprised by the induction heating apparatus which induction-heats the said conducting wire, The conducting wire coupling | bonding method of Claim 1 or Claim 2 characterized by the above-mentioned. A conductor coupling device that forms a joint where conductors are coupled by heating at least two conductors covered with an insulating coating,
Heating means for heating the conducting wire;
Fluid ejecting means for ejecting fluid toward the conducting wire and blowing away the insulating coating heated and melted or carbonized by the heating means;
With
The heating means performs heating when melting or carbonizing the insulating coating of the conductive wire and heating when bonding the conductive wires from which the insulating coating has been removed to form a joint. Lead wire coupling device.   The conductor coupling device according to claim 4, wherein the fluid ejected by the fluid ejecting means includes a liquid.   6. The lead wire coupling device according to claim 4, wherein the heating means is constituted by induction heating means for induction heating the lead wires.   The heating means includes a coil connected to an AC power source, and a conductor insertion space surrounded by the coil, and the fluid ejecting means includes a fluid passage formed inside the coil; The lead wire coupling device according to claim 6, further comprising: an ejection hole that opens from a fluid passage toward the lead wire insertion space. The fluid passage includes a gas passage through which gas passes and a liquid passage through which liquid passes, and a communication passage communicating the gas passage with the liquid passage,
The wire coupling device according to claim 7, wherein a mixed fluid of the gas and the liquid is generated by passing the gas or the liquid through the communication path, and the mixed fluid is ejected from the ejection hole. . The fluid ejecting means includes
Gas supply setting means capable of setting the presence or absence of supply of the gas to the gas passage;
Liquid supply setting means capable of setting whether or not the liquid is supplied to the liquid passage;
Control means for controlling the gas supply setting means and the liquid supply setting means to switch presence / absence of supply of the gas to the gas passage and presence / absence of supply of the liquid to the liquid passage;
With
The control means supplies the liquid to the liquid passage and supplies the gas to the gas passage to inject a fluid mixture of the liquid and the gas from the ejection hole and then stop supplying the fluid. The conductor coupling device according to claim 8, wherein the supply of the gas to the gas passage is stopped after the supply of the liquid to the liquid passage is stopped. The fluid passage includes a gas passage through which gas passes and a liquid passage through which liquid passes, and a communication passage that connects the gas passage and the ejection hole,
The liquid passage communicates with the communication passage;
The lead wire coupling device according to claim 7, wherein a flow passage cross-sectional area of the communication passage is smaller than a flow passage cross-sectional area of the gas passage.

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