JP6459667B2 - Manufacturing method of functional parts - Google Patents

Description

  The present invention relates to a method for manufacturing a functional component.

  Patent Document 1 discloses a first process in which a terminal portion of a litz wire is inserted from one end side of a tube and exposed for a predetermined length from the other end side of the tube, and an end surface on the other end side of the tube is a liquid of a chemical release agent. The second end of the insulating coating is removed by immersing the end of the litz wire in a chemical stripping agent so as to be below the surface, introducing a gas into the tube and keeping the tube at a positive pressure for a predetermined time. And a terminal processing method including the steps.

JP 2014-17899 A

  Here, the induction heating coil includes, for example, a functional part that is wound in a coil shape (annular) and exhibits a function as an induction heating coil, and a wiring part that is drawn from the functional part and flows current to the functional part. Have.

  For example, in order to attach a terminal to the end of a wiring part, when the film on the end of the wiring part is removed with a solvent, if the solvent evaporates and adheres to the functional part, the functional part is affected by the solvent, The function that should be performed may not be exhibited. For example, there is a case where a part of the coating of the functional part is removed and a short circuit occurs.

  An object of the present invention is to prevent the functional part from being attacked by the solvent by the volatilized solvent, as compared with the case where the wiring part is removed by the solvent in a state where all the functional parts are exposed.

The invention according to claim 1 is characterized in that a functional part having a wire rod in which a bundle of strands coated with a conductor is covered is put into the box, and a wiring part formed of the wire material for passing a current to the functional part is provided. A step of taking out the box, a twisting step of twisting an end of the wiring portion in a direction opposite to a twisting direction of the bundle of strands after the step, and after the twisting step, It has a squeeze ironing process toward the distal side along the wire, after the ironing step, a removal step of removing by dipping the coating film of the end in the solvent, the.

  The invention of claim 2 has a step of supporting the wiring portion on a support portion provided in the box before the removing step.

The invention of claim 3 includes a step of cutting the end portion squeezed in the ironing step before the removing step.

The invention of claim 4 includes, after the removing step, an attaching step of attaching a terminal to the end portion, and a step of soldering the terminal attached to the end portion and the end portion in the attaching step. .

According to the manufacturing method of the first aspect of the present invention, it is possible to suppress the functional part from being attacked by the volatilized solvent as compared with the case where the wiring part is removed with the solvent in a state where all the functional parts are exposed.
In addition, according to the manufacturing method of claim 1 of the present invention, the solvent penetrates to an unnecessary part by capillary action as compared with the case where the end of the wiring part is immersed in the solvent while the bundle of strands is twisted. Thus, the removal of the film can be suppressed.
Furthermore, according to the manufacturing method of claim 1 of the present invention, the end of the wiring portion is compared with the case where the end of the wiring portion is immersed in a solvent as it is after the bundle of strands is twisted in the direction opposite to the twisting direction. The position of the boundary between the portion where the coating is removed and the portion where the coating is not removed is difficult to vary between the strands.

  According to the manufacturing method of the second aspect of the present invention, it is possible to suppress the shaking of the end portion when the end portion of the wiring portion is removed with a solvent as compared with the case where the end portion of the wiring portion can be freely moved.

According to the manufacturing method of claim 3 of the present invention, after squeezing the end portion of the wiring portion, the coating is removed at the end portion of the wiring portion as compared with the case where the end portion of the wiring portion is immersed in a solvent as it is. The length is difficult to vary between strands.

According to the manufacturing method according to claim 4 of the present invention, a wiring portion in a state in which all of the functional part is exposed than in the case of removing the solvent, functional unit malfunctions are suppressed due to be eroded by the solvent Functional parts can be manufactured.

It is a perspective view which shows the structure of the case and induction heating coil which concern on this embodiment. In the structure shown in FIG. 1, it is a perspective view which shows the state in which the function part of the induction heating coil was accommodated in the case. FIG. 3 is a perspective view showing a state in which the wiring part of the induction heating coil is supported by the support part in the configuration shown in FIG. 2. FIG. 4 is a perspective view showing a state in which the cover of the case is closed in the configuration shown in FIG. 3. It is the schematic which shows the structure of the manufacturing apparatus which concerns on this embodiment. It is the schematic which shows the structure of the edge part processing apparatus which concerns on this embodiment. It is the schematic which shows the twist process of the manufacturing method which concerns on this embodiment. It is the schematic which shows the ironing process of the manufacturing method which concerns on this embodiment. It is the schematic which shows the terminal part of the wiring part after passing through the cutting process of the manufacturing method concerning this embodiment. It is the schematic which shows the attachment process of the manufacturing method which concerns on this embodiment. It is the schematic which shows the soldering process of the manufacturing method which concerns on this embodiment.

  An example of an embodiment according to the present invention will be described with reference to the drawings. Below, the induction heating coil 100, the manufacturing apparatus 10 of the induction heating coil with a terminal, and the manufacturing method of the induction heating coil with a terminal are demonstrated.

  The front (front side), rear (back side), upper, lower, left (left side) and right (right side) used in the following description are “front”, “rear”, “ This corresponds to the arrow directions indicated by “up”, “down”, “left”, and “right”. Since these directions are determined for convenience of explanation, the apparatus configuration is not limited to these directions.

  In addition, “x” in “○” in the figure means an arrow from the front to the back of the page, and “•” in “○” in the figure. Means an arrow heading from the back of the page to the front.

<Induction heating coil 100>
As shown in FIG. 1, the induction heating coil 100 is an induction heating coil before the terminal 120 (see FIG. 10) is fixed, and a strand 103 (FIG. 1) in which a conductor is covered with an insulating coating (an example of a coating). 11) and a litz wire 101 (an example of a wire rod) twisted.

  The conductor of the strand 103 is comprised by metal wires, such as a copper wire, for example. The insulating film of the strand 103 is made of a resin film such as polyimide, for example. In addition, an induction heating coil is a coil used for induction heating which heats a heating object using the principle of electromagnetic induction.

  Specifically, as shown in FIG. 1, the induction heating coil 100 is pulled out from the functional unit 102, and a functional unit 102 in which a litz wire 101 is wound in a coil shape (annular) and exhibits an electromagnetic induction function. Wiring portions 104 and 105 for supplying current to the functional portion 102 are provided. The wiring part 104 is drawn out from the outer peripheral side of the litz wire 101 wound in a coil shape (annular) in the function part 102. The wiring part 105 is drawn out from the inner peripheral side of the litz wire 101 wound in a coil shape (annular) in the function part 102.

  The induction heating coil 100 is held by a bobbin 110 as a holding unit. The bobbin 110 has a length in one direction (left-right direction) and is curved in an arc shape when viewed from the left side or the right side. Specifically, the bobbin 110 is curved in a convex shape forward, and the front surface is a convex surface 112.

  The convex surface 112 is formed with a convex portion 114 protruding forward. In a state where the functional part 102 is arranged on the convex surface 112 so as to be wound around the convex part 114, the functional part 102 is bonded to the convex surface 112, so that the induction heating coil 100 is bobbins. 110.

<Manufacturing apparatus 10>
As shown in FIG. 5, the manufacturing apparatus 10 fixes the terminal 120 (see FIG. 10) to the end portions of the wiring portions 104 and 105 of the induction heating coil 100 and attaches the induction heating coil with a terminal (an example of a functional component). It is a device to manufacture. Specifically, the manufacturing apparatus 10 includes a case 12 (an example of a box), a moving mechanism 14, an end processing device 16, and a soldering device 98 (see FIG. 11).

[Case 12]
As shown in FIGS. 1 and 2, the case 12 includes a case main body 20 in which the bobbin 110 and the functional portion 102 of the induction heating coil 100 are accommodated, and a support portion that holds the wiring portions 104 and 105 of the induction heating coil 100. 30 and a cover 40 (lid).

  The case body 20 is formed in a rectangular parallelepiped shape with the front opening. As shown in FIG. 5, the case body 20 is provided with a storage portion 22 formed in a U-shape (U-shape) that opens forward in a side view (side sectional view). . As shown in FIG. 1, a latch 23 serving as a holding portion that holds the bobbin 110 accommodated in the accommodation portion 22 is provided on the upper portion of the accommodation portion 22.

  In the case 12, the bobbin 110 is guided to the top surface 22 </ b> A and the bottom surface 22 </ b> B of the housing part 22 and the two side surfaces 20 </ b> A of the case body 20, and the bobbin 110 and the functional part 102 are housed in the housing part 22. The upper portion of the bobbin 110 is held by the latch 23 in a state where the bobbin 110 is in contact with the back surface 22 </ b> C of the housing portion 22.

  The support portion 30 includes a back plate 32, a pair of side plates 34, a bottom plate 35, a support body 38 in which a groove 37 is formed, and a support plate 39.

  The support 38 is formed in a block shape and is fixed to the back plate 32. A pair of grooves 37 is formed on the front surface 38A of the support body 38 along the vertical direction. As shown in FIG. 2, the wiring portions 104 and 105 are placed in the grooves 37.

  The support plate 39 is rotatable between a support position (position shown in FIG. 3) that contacts the front surface 38A of the support 38 and a retracted position (position shown in FIG. 2) away from the front surface 38A of the support 38. The back plate 32 is attached to the right side (side side) of the support 38.

  The support plate 39 presses the wiring portions 104 and 105 placed in the grooves 37 at the support position. Thus, the wiring portions 104 and 105 are supported by the support plate 39 and the support 38. As shown in FIG. 2, the bottom plate 35 is formed with slits 36 (openings (notches)) through which the wiring portions 104 and 105 supported by the support plate 39 and the support 38 are passed. .

  The upper portion of the cover 40 is supported by the case body 20 so as to be opened and closed by a hinge 48. Specifically, the cover 40 includes a main body cover 42 that covers an opening on the front side (front side) of the case main body 20 and a support portion cover 44 that covers the support portion 30. The support portion cover 44 is formed in a box shape having an open rear side (rear side) in the closed state (the state shown in FIG. 4). A slit 46 (opening (notch)) through which the wiring sections 104 and 105 supported by the support plate 39 and the support 38 are passed is formed at the bottom of the support cover 44. The slit 46 overlaps the slit 36 when the cover 40 is closed. The wiring portions 104 and 105 pass through the portion where the slit 46 and the slit 36 overlap.

  As shown in FIG. 4, the bobbin 110 and the functional unit 102 are accommodated in the case 12, so that the functional unit 102 is moved upward, left and right (both sides), and the back side by the case body 20. The lower side is covered, and the front side is covered by the cover 40.

[Movement mechanism 14]
The moving mechanism 14 (see FIG. 5) is a mechanism that moves the case 12 to each part (a holding unit 50, a solvent storage unit 80, a water storage unit 90, and a drying unit 96 described later) of the end processing device 16. Specifically, the moving mechanism 14 includes a guide 15 (see FIG. 1) and a drive unit (not shown). In the moving mechanism 14, the case 12 is moved along the guide 15 to each part of the end processing device 16 by the driving force of the driving unit. Furthermore, the moving mechanism 14 is configured to raise and lower the case 12 and immerse the wiring portions 104 and 105 in the solvent and water, respectively, in a solvent reservoir 80 and a water reservoir 90 described later.

[End processing device 16]
As shown in FIG. 6, the end processing apparatus 16 includes a pair of holding units 50 that hold the wiring units 104 and 105, a squeezing and squeezing unit 60 that connects the wiring units 104 and 105, and the wiring units 104 and 105. And a cutting unit 70 for cutting.

  Further, as shown in FIG. 5, the end processing device 16 includes a solvent storage unit 80 (an example of a storage unit) in which a solvent is stored, a water storage unit 90 in which water as a cleaning liquid is stored, and a drying unit. 96.

(Holding part 50)
As shown in FIG. 6, each holding portion 50 has a pair of holding members 54 that can be opened and closed by rotating around an opening / closing shaft 52. A force acting in a direction in which the proximal end portions (lower end portions) of the pair of holding members 54 approach is applied to the proximal end portions, and the distal end portions (lower end portions) of the wiring portions 104 and 105 are held by the distal end portions. The force acting in the direction in which the base end portion (lower end portion) approaches is applied to the base end portion by, for example, the elastic force of an elastic member such as a spring or the tightening using a screw.

  In each holding part 50, for example, one of the holding members 54 is fixed to the shaft part 56. The shaft portion 56 is supported by the support frames 58 and 59 so as to be movable and rotatable in the axial direction. A compression spring 57 is disposed below the support frame 59 to push the shaft portion 56 downward. Further, a cylindrical rotating portion 55 for rotating the shaft portion 56 is disposed between the support frames 58 and 59. The shaft portion 56 is movable in the axial direction with respect to the rotating portion 55, but is prevented from rotating with respect to the rotating portion 55, and the rotating portion 55 and the shaft portion 56 are configured to rotate integrally. Yes.

  In the holding unit 50, the rotating unit 55 is rotated in a predetermined rotation direction in a state where the end portions of the wiring units 104 and 105 are held by the pair of holding members 54, thereby the pair of holding members 54. Is rotated, and the end portions of the wiring portions 104 and 105 are twisted in the direction opposite to the twisting direction of the bundle of the strands 103 (see FIG. 11). In addition, the rotation part 55 may be set as the structure by which rotation of the direction opposite to a predetermined rotation direction is restrict | limited.

(Squeezing part 60)
As shown in FIG. 6, the ironing unit 60 is configured to iron the wiring units 104 and 105 together. Specifically, the ironing part 60 has a pair of pinching members 62 (only one is shown in FIG. 6) and a support 64.

  The pair of sandwiching members 62 are arranged on the front side (one side on the side) and the rear side (the other side on the side) with respect to the wiring portions 104 and 105 held by the pair of holding members 54. A force acting in a direction approaching the other is applied to one of the pair of sandwiching members 62 to sandwich the terminal side (lower end side) of the wiring portions 104 and 105.

  The support column 64 is provided on the support frame 58 so as to extend upward from the support frame 58. This support | pillar 64 is supporting the pair of clamping member 62 so that a movement to an up-down direction is possible.

  In the squeezing unit 60, the pair of sandwiching members 62 in a state of sandwiching the terminal sides of the wiring units 104 and 105 are moved downward, so that the terminal sides of the wiring units 104 and 105 are squeezed.

(Cut 70)
As shown in FIG. 6, the cutting unit 70 includes a base 72, scissors 74, a linear guide 76, and a stopper 78.

  The table 72 is supported by a plurality of support columns 71 extending upward from the support frame 59. The rail portion 76A of the linear guide 76 is fixed to the upper surface of the table 72 along the horizontal direction (left-right direction). A handle portion 75A of one blade 74A of the scissors 74 is fixed to the table portion 76B that moves along the rail portion 76A.

  The stopper 78 is disposed on the ironing portion 60 side (left side in FIG. 6) with respect to the rail portion 76A. The stopper 78 hits the table portion 76B moved to the ironing portion 60 side (left side in FIG. 6), and the wiring portions 104 and 105 in a state where the blades 74A and 74B of the scissors 74 are held by the pair of holding members 54. The table portion 76B is positioned at a position that can be cut (a position indicated by a two-dot chain line in FIG. 6).

  And the scissors 74 are cut | disconnected the wiring parts 104 and 105 because the other blade 74B moves with respect to one blade 74A by operating the handle | pattern part 75B (operation part) of the other blade 74B.

(Solvent storage unit 80)
As shown in FIG. 5, the solvent reservoir 80 is composed of a container having an open top. A solvent is stored in the solvent storage unit 80. As the solvent, for example, an alkaline solution containing sodium hydroxide as a main component is used.

  Around the solvent storage unit 80, a heater 82 is provided as a heating unit for heating the solvent. The solvent is heated to, for example, 400 ° C. by the heater 82.

  In the solvent reservoir 80, the wiring portions 104 and 105 are immersed in the solvent, so that the insulating coating of the wiring portions 104 and 105 is dissolved and the insulating coating is removed.

(Water reservoir 90)
As FIG. 5 shows, the water storage part 90 is comprised with the container by which the upper part was open | released. Water is stored in the water storage unit 90. Water is at room temperature. A pair of rotating cleaning brushes 92 is disposed in the water storage unit 90.

  In the water storage part 90, the wiring parts 104 and 105 are immersed in water, so that the solvent (alkaline component) attached to the wiring parts 104 and 105 is diluted. Furthermore, the wiring parts 104 and 105 immersed in water are sandwiched between the pair of cleaning brushes 92, and the pair of cleaning brushes 92 are rotated, whereby the solvent attached to the wiring parts 104 and 105 is removed.

(Drying part 96)
As illustrated in FIG. 5, the drying unit 96 dries the wiring units 104 and 105 by applying hot air or cold air to the wiring units 104 and 105 to blow off moisture attached to the wiring units 104 and 105.

[Soldering device 98]
As shown in FIG. 11, the soldering device 98 is a device for soldering the terminals 120 attached to the wiring portions 104 and 105 and the wiring portions 104 and 105. Specifically, the soldering apparatus 98 includes a nozzle 98A for supplying the solder 130 and a iron 98B for melting the solder 130 supplied from the nozzle 98A.

<Manufacturing method>
The method of manufacturing an induction heating coil with a terminal using the manufacturing apparatus 10 includes a housing process, a twisting process, an ironing process, a cutting process, a removing process, an attaching process, and a soldering process. ing. In the manufacturing method, end processing that processes the end portion (an example of the end portion) of the litz wire 101 in the wiring portions 104 and 105 by the housing step, the twisting step, the ironing step, the cutting step, and the removing step. A method (end processing step) is configured.

[Containment process]
In the housing step, as shown in FIG. 2, the functional unit 102 of the induction heating coil 100 is placed (accommodated) inside the case 12 with the cover 40 opened, for example, by an operator's manual work. Specifically, in the housing step, the bobbin 110 is placed in the housing portion 22 of the case 12 so that the convex portion 114 of the bobbin 110 faces the front side (opening side of the case 12).

  When the bobbin 110 is placed in the housing portion 22, the bobbin 110 is guided to the top surface 22 </ b> A and the bottom surface 22 </ b> B of the housing portion 22 and both side surfaces of the case body 20 and is housed in the housing portion 22. The bobbin 110 housed in the housing portion 22 is held by the latch 23.

  Further, in the accommodation process, a support process is performed in which the support sections 30 provided in the case 12 support the wiring sections 104 and 105. Specifically, as shown in FIG. 2, the wiring portions 104, 105 are placed in the grooves 37 formed in the support 38 in a state where the support plate 39 is located at the retracted position (state shown in FIG. 2). Is put. Further, the terminal side (lower end side) of the wiring portions 104 and 105 is disposed below the bottom plate 35 through the slit 36 formed in the bottom plate 35 of the support portion 30.

  As shown in FIG. 3, the support plate 39 is rotated from the retracted position to the support position, and the wiring portions 104 and 105 placed in the grooves 37 are pressed by the support plate 39. Accordingly, the wiring portions 104 and 105 are supported by the support plate 39 and the support body 38 of the support portion 30.

  Next, as shown in FIG. 4, the cover 40 is closed with respect to the case body 20. As a result, the slit 46 of the cover 40 overlaps with the slit 36, and the ends of the wiring portions 104 and 105 pass through the overlapping portion of the slit 46 and the slit 36 and are brought out to the lower side of the case 12. . In this way, the end sides of the wiring portions 104 and 105 are brought out of the case 12.

  As described above, when the functional unit 102 is accommodated in the case 12, the functional unit 102 is covered on the upper side, the left and right sides, the back side, and the lower side by the case body 20, and the front side is covered by the cover 40.

[Twisting process]
In the twisting process, for example, by an operator's manual work, the ends of the wiring portions 104 and 105 that are brought out of the case 12 in the housing process are twisted into a bundle of strands 103 (see FIG. 11) of the induction heating coil 100. Twist in the opposite direction. Specifically, the twisting process is performed as follows.

  In the twisting process, as shown in FIG. 7, first, the end portions of the wiring portions 104 and 105 that are exposed to the outside of the case 12 are held by the pair of holding members 54 of the holding portion 50. Next, by rotating the rotating portion 55, the end portions of the wiring portions 104 and 105 are twisted in a direction opposite to the twisting direction of the bundle of the strands 103.

  As a result, the bundle of the strands 103 of the wiring portions 104 and 105 is unwound, and the bundle of the strands 103 of the wiring portions 104 and 105 is outside as shown in FIG. Swell.

[Crushing process]
In the ironing process, for example, by manual work by the operator, the terminal portions of the wiring portions 104 and 105 twisted in the twisting process are ironed toward the terminal end along the litz wire 101 (see FIGS. 8A and 8B). . Specifically, the ironing process is performed as follows.

  As shown in FIG. 8A, the terminal side of the wiring portions 104 and 105 held by the pair of holding members 54 is above the swelled portion of the bundle of the strands 103 in the twisting process, and the ironing portion. It is sandwiched between 60 pairs of sandwiching members 62. Then, as shown in FIG. 8 (B), when the pair of sandwiching members 62 sandwiching the end sides of the wiring portions 104 and 105 are moved downward, the end sides of the wiring portions 104 and 105 are removed. It will be spent. As a result, in the twisting process, the bundle of the strands 103 that swells outside the wiring portions 104 and 105 is squeezed, and the loose strands 103 are extended downward.

[Cutting process]
In the cutting process, for example, the end portions of the wiring portions 104 and 105 squeezed in the ironing process are cut by an operator's manual work. Specifically, the cutting process is performed as follows.

  First, the scissors 74 of the cutting part 70 are moved to the ironing part 60 side (left side) along the rail part 76A. As a result, the table portion 76B is positioned against the stopper 78, and the blades 74A and 74B of the scissors 74 are positioned on the wiring portions 104 and 105 held by the pair of holding members 54.

  Then, by operating the handle portion 75B (operation part) of the other blade 74B in the scissors 74, the other blade 74B moves relative to the one blade 74A, and the wiring parts 104 and 105 are cut. In addition, the wiring parts 104 and 105 are cut | disconnected in the range squeezed by the ironing part 60. FIG.

  As described above, when the wiring portions 104 and 105 are cut through the twisting process, as shown in FIG. 9, the end portions of the wiring portions 104 and 105 are scattered apart. Moreover, the wiring parts 104 and 105 are cut | disconnected through an ironing process, and the length of the terminal part of the wiring parts 104 and 105 is arrange | equalized.

[Removal process]
In the removing step, the insulating coating at the end portions of the wiring portions 104 and 105 is removed with a solvent. Specifically, the removal step is performed as follows.

  First, as shown in FIG. 5, the insulating coating is dissolved and the insulating coating is removed by immersing the end portions of the wiring portions 104 and 105 in the solvent stored in the solvent storage 80. At this time, the case 12 is disposed on the upper side of the solvent reservoir 80.

  Next, the end portions of the wiring portions 104 and 105 are immersed in the water stored in the water storage portion 90. Thereby, the solvent adhering to the wiring parts 104 and 105 is diluted. In addition, the wiring parts 104 and 105 are sandwiched between a pair of rotating cleaning brushes 92 in the water storage part 90, so that the solvent (alkaline component) attached to the wiring parts 104 and 105 is removed.

  In addition, it is estimated that the water storage part 90 has the function to remove the insulating film which could not be removed by the solvent storage part 80 as follows. That is, when the wiring parts 104 and 105 heated by immersion in the solvent are immersed in water, water bumps around the wiring parts 104 and 105 and remains in the wiring parts 104 and 105 due to the impact. It is presumed that the insulating coating is peeled off.

[Drying process]
In the drying process, as shown in FIG. 5, the drying unit 96 applies hot air or cold air to the end portions of the wiring units 104 and 105 immersed in the solvent and water in the removal process. As a result, moisture adhering to the wiring portions 104 and 105 is removed, and the wiring portions 104 and 105 are dried.

[Installation process]
In the attaching step, as shown in FIGS. 10A and 10B, the terminal 120 is attached to the end portions of the wiring portions 104 and 105 from which the insulating coating has been removed. Specifically, the terminals 120 are attached to the end portions of the wiring portions 104 and 105 by caulking the caulking portions 122 and 124 of the terminal 120 with a tool (not shown). Note that the end portions of the wiring portions 104 and 105 are covered with a covering material 128 such as a tube or tape, leaving a connection portion electrically connected to the terminal 120 before the terminal 120 is attached.

  Further, in the attachment process, the crimping pressures of the crimping portions 122 and 124 are set to such an extent that the wire 103 (see FIG. 11) constituting the litz wire 101 of the wiring portions 104 and 105 is not broken.

[Soldering process]
In the soldering process, as shown in FIG. 11, the terminals 120 attached to the end portions of the wiring portions 104 and 105 in the attaching step and the end portions of the wiring portions 104 and 105 are soldered. Specifically, the solder supplied from the nozzle 98 </ b> A of the soldering apparatus 98 is melted with a trowel 98 </ b> B to solder the terminal 120 and the end portions of the wiring portions 104 and 105.

  Thus, the terminal 120 is fixed to the terminal portions of the wiring portions 104 and 105 in the induction heating coil 100, whereby the induction heating coil with terminal (an example of a functional component) is manufactured. Note that the manufacturing apparatus 10 may include a plurality of cases 12 and perform the above-described processes (a housing process, a twisting process, an ironing process, a cutting process, and a removing process) in parallel.

<Operation of this embodiment>
In the present embodiment, as described above, the terminal portions of the wiring portions 104 and 105 are attached to the solvent stored in the solvent storage portion 80 in a state where the functional portion 102 of the induction heating coil 100 is accommodated in the case 12. The insulating coating is removed by dipping.

  For this reason, the functional unit 102 is eroded by the solvent volatilized from the solvent storage unit 80 as compared with the case where the terminal portions of the wiring units 104 and 105 are removed by the solvent with the entire functional unit 102 exposed. It is suppressed. For example, a part of the coating of the litz wire 101 included in the functional unit 102 is removed by the volatilized solvent, and the litz wires 101 that should not be electrically connected to each other are prevented from conducting and short-circuiting.

  In particular, during immersion in the solvent, the functional unit 102 is disposed on the upper side of the solvent storage unit 80, and thus the solvent volatilized from the solvent storage unit 80 is directed to the functional unit 102 side. This prevents the solvent from adhering to the functional unit 102.

  Moreover, in this embodiment, since the functional part 102 side (product side) is covered with the case 12 instead of the solvent storage part 80 side, the functional part 102 is compared with the case where the solvent storage part 80 side is covered as follows. The adhesion of the solvent is suppressed.

  In the case of covering the solvent storage unit 80 side (comparative example), it is necessary to provide an opening for inserting the wiring units 104 and 105 in the cover. When the wiring portions 104 and 105 are inserted into the openings, it is necessary to bring the functional portion 102 close to the openings. Since the volatilized solvent is discharged from the opening, the solvent may adhere to the functional unit 102. Further, the opening needs to be increased to some extent in consideration of workability for inserting the wiring portions 104 and 105, and it can be said that the volatile solvent is easily discharged from the opening and the solvent is likely to adhere to the functional unit 102.

  On the other hand, when the functional unit 102 side (product side) is covered with the case 12 as in the present embodiment, the path through which the volatilized solvent enters the functional unit 102 can be obscured. The solvent is prevented from adhering to the surface.

  Furthermore, in the present embodiment, the end portions of the wiring portions 104 and 105 are immersed in the solvent stored in the solvent storage portion 80 while being supported by the support portion 30 of the case 12, and the insulating coating is removed. . For this reason, compared with the case where the terminal parts of the wiring parts 104 and 105 can move freely, when the terminal parts of the wiring parts 104 and 105 are removed with a solvent, the shaking of the terminal parts is suppressed.

  Further, in the present embodiment, as described above, after passing through the twisting process of twisting the end portions of the wiring portions 104 and 105 in the direction opposite to the twisting direction of the bundle of the strands 103 of the induction heating coil 100, the solvent storage portion 80. Soaked in a solvent. Thereby, the terminal part of the wiring parts 104 and 105 is immersed in the solvent of the solvent storage part 80 in the state scattered apart. As described above, the end portions of the wiring portions 104 and 105 are separated, so that the gap between the strands 103 is widened, and the gap that can form the capillary is eliminated or reduced.

  For this reason, compared with the case where the end portions of the wiring portions 104 and 105 are immersed in a solvent while the bundle of the strands 103 of the induction heating coil 100 is twisted, the solvent penetrates to an unnecessary portion due to a capillary phenomenon and is insulated. Removal of the coating is suppressed.

  In the present embodiment, the end portions of the wiring portions 104 and 105 twisted in the twisting process are squeezed toward the end side along the litz wire 101. As a result, in the twisting process, the bundle of the strands 103 that swells outside the wiring portions 104 and 105 is squeezed, and the loose strands 103 are extended downward.

  For this reason, after performing the twisting process, when the loosened wire 103 extends downward as compared with the case where the ends of the wiring portions 104 and 105 are immersed in the solvent without squeezing the end portions of the wiring portions 104 and 105, , 105, the position of the boundary between the portion where the insulating film is removed and the portion where the insulating film is not removed hardly varies between the strands 103.

  Moreover, in this embodiment, the terminal part of the wiring parts 104 and 105 squeezed by the ironing process is cut. Thereby, the length of the terminal part of the wiring parts 104 and 105 is aligned.

  For this reason, after performing the twisting process, the length at which the insulating coating is removed at the end portions of the wiring portions 104 and 105 is shorter than when the end portions of the wiring portions 104 and 105 are immersed in a solvent without being cut. It is difficult to disperse between the strands 103.

  As described above, since the solvent is prevented from adhering to the functional part 102, according to the present embodiment, the induction heating coil with a terminal in which the malfunction caused by the functional part 102 being attacked by the solvent is suppressed is provided. Is manufactured. Further, in this embodiment, since the solvent can be prevented from entering an unnecessary portion by capillary action to remove the insulating coating, the coating of a predetermined portion at the end portion of the wiring portions 104 and 105 is removed. An induction heating coil with a terminal is manufactured.

<Modification>
In the present embodiment, the functional unit 102 of the induction heating coil 100 is covered by the case 12 on the upper side, the left and right sides, the back side, the lower side, and the front side, but is not limited thereto. For example, a configuration in which the upper portion of the case body 20 is opened and the upper portion of the functional unit 102 is not covered may be employed. That is, as long as the path through which the volatilized solvent can enter is covered, the case 12 may not be sealed, and the functional unit 102 may have a portion that is not covered by the case 12.

  In this embodiment, although the wiring parts 104 and 105 immersed in the solvent were immersed in the water of the water storage part 90, it is not restricted to this. In place of or in addition to the immersion in water, the wiring portions 104 and 105 may be immersed in an acidic solution to neutralize the solvent (alkali component) attached to the wiring portions 104 and 105.

  In the present embodiment, the function unit that exhibits the function of electromagnetic induction in the induction heating coil 100 is applied as the function unit, but is not limited thereto. For example, in an electromagnetic induction coil that uses the principle of electromagnetic induction for applications other than heating, a functional unit that exhibits the function of electromagnetic induction may be used. Moreover, in the coil which comprises an electromagnet, the function part which exhibits the function as a magnet may be sufficient. As a functional part, while providing the wire which coat | covered the conductor with the film, what is necessary is just a part which exhibits a predetermined function.

  In this embodiment, although the case where it performed by an operator's manual work in each process of a manufacturing method was demonstrated, it is not restricted to this. For example, the configuration may be such that each step of the manufacturing apparatus is operated by the driving force of the driving unit included in the manufacturing apparatus. Specifically, for example, the rotating unit 55 of the holding unit 50 is not limited to a configuration that is manually rotated, and may be rotated by the driving force of the driving unit. In addition, the pair of sandwiching members 62 in the squeezing unit 60 is not limited to a configuration that moves up and down manually, and may be moved up and down by the driving force of the drive unit. Further, the scissors 74 of the cutting unit 70 are not limited to the configuration operated manually, and may be operated by the driving force of the driving unit.

  The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the spirit of the present invention. For example, the modification examples described above may be appropriately combined.

12 Case (example of box)
30 support part 101 litz wire (an example of wire)
102 Functional part 104 Wiring part 120 Terminal

Claims (4)

A step of putting a functional part including a wire in which a bundle of strands coated with a conductor is twisted into a box, and taking out a wiring part formed of the wire flowing current to the functional part to the outside of the box When,
After the step, a twisting step of twisting the end of the wiring portion in a direction opposite to the twisting direction of the bundle of strands;
After the twisting step, the step of squeezing the end portion toward the end side along the wire, and
After the ironing process, a removal step of removing by dipping the coating film of the end in a solvent,
The manufacturing method of the functional component which has.   The method for manufacturing a functional component according to claim 1, further comprising a step of supporting the wiring portion on a support portion provided in the box before the removing step. Prior to said removing step, method for producing a functional component according to claim 1 or 2 comprising a step of cutting the end portion squeezed by the ironing process. After the removing step, an attaching step for attaching a terminal to the end,
Soldering the terminal attached to the end and the end in the attaching step;
The manufacturing method of the functional component of any one of Claims 1-3 which has these.

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