Electric wire connecting method, bonded electric wire, electric wire fixing device, and bonded electric wire manufacturing device

Abstract

[Problem] To provide an electric cable connecting method and a joined electric cable with which terminal conductors in a gathered state can be joined. [Solution] This method for conductively connecting exposed terminal conductors 21a of a plurality of coated electric cables 20 includes: a step s2 of gathering each of the coated electric cables 20; a fixing step s3 of fixing the terminal conductors 21a of the gathered plurality of coated electric cables 20 using a resin cover 50; and a joining step s4 of setting in an electric cable connecting device 40 the plurality of coated electric cables 20 of which the plurality of terminal conductors 21a have been fixed using the resin cover 50, and joining the plurality of exposed terminal conductors 21a.

Description

[Technical Field]

[0001] The present invention relates to, for example, a wire connecting method for electrically connecting exposed conductors of a plurality of covered wires, a joined wire, a wire fixing device, and a joined wire manufacturing device. [Background technology]

[0002] For example, as an electric wire constituting a wire harness arranged in a vehicle, a coated electric wire in which a conductor composed of multiple core wires is coated with an insulating coating is used. In order to electrically connect such coated electric wires to each other, terminal conductors exposed from the insulating coating may be connected to each other.

[0003] As a method for connecting the ends of such coated electric wires, for example, Patent Document 1 discloses a method in which the terminal conductors exposed from the ends of the coated electric wires are placed between a horn and anvil that constitute an ultrasonic bonding device, and the terminal conductors are bonded together using the ultrasonic bonding device.

[0004] However, with the method of Patent Document 1, there is a risk that the end conductors exposed from the insulating coating may scatter when they are placed between the horn and the anvil, which may prevent the end conductors from being joined in the desired arrangement, resulting in unstable product quality. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Re-tabled publication 2019 / 225492 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the above-mentioned problems, the present invention aims to provide a wire connecting method, a joined wire, a wire fixing device, and a joined wire manufacturing device that can join end conductors in a bundled state. [Means for solving the problem]

[0007] The present invention is an electric wire connecting method for electrically connecting exposed terminal conductors of a plurality of insulated electric wires, and is characterized by comprising the steps of: a bundling step for bundling the insulated electric wires; a fixing step for fixing the terminal conductors of the bundled insulated electric wires with a fixing member; and a joining step for setting the insulated electric wires with the terminal conductors fixed with the fixing member in a joining device and joining the exposed terminal conductors.

[0008] The present invention is also characterized in that it is a joined electric wire comprising a plurality of bundled insulated electric wires and a fixing member for fixing the tip sides of a plurality of terminal conductors exposed from the tip of each insulated electric wire, and in which the plurality of terminal conductors fixed by the fixing member are joined together.

[0009] The fixing member includes a resin or metal cover member that covers and fixes the tip end of the bundled terminal conductors, an adhesive or chemical that is applied to or immersed in the tip end of the terminal conductors to adhere them, and an insulating coating that covers the tip end of the exposed terminal conductors in the insulated electric wire.

[0010] The above-mentioned fixing of the terminal conductor with a fixing member includes cases where the terminal conductor is fixed directly or indirectly using a fixing member. For example, this includes cases where the terminal conductor is fixed by directly attaching a fixing member to the terminal conductor, as well as cases where the terminal conductor is fixed indirectly by attaching a fixing member to an insulating coating that covers the tip end of the terminal conductor.

[0011] The joining device may be any device that can electrically connect the terminal conductors, and includes other devices for connecting electric wires, such as ultrasonic joining devices, laser joining devices, crimp joining devices, and resistance welding devices.

[0012] According to this invention, the terminal conductors exposed from the insulating coating can be fixed with a fixing member to prevent the terminal conductors from scattering, and the terminal conductors fixed in a group in a desired arrangement or positional relationship can be placed in a joining device and electrically connected, thereby producing a joined electric wire with stable conductivity. The arrangement of the terminal conductors may be any arrangement, such as a quadrangular or rhombic cross section, a hexagonal cross section, or a polygonal cross section close to a circular cross section.

[0013] In another aspect of the present invention, a removal step of removing the fixing member may be carried out. According to the present invention, the tip end of the joined terminal conductor that becomes unnecessary can be removed.

[0014] In addition, removing the fixing member as described above includes, for example, removing the fixing member by detaching it, or removing a part of the terminal conductor or the part fixed by the fixing member, including the part where the fixing member is fixed, by cutting or dissolving it.

[0015] In another aspect of the present invention, the removing step may be performed before the bonding step. According to the present invention, the terminal conductors can be electrically connected without worrying about interference between the joining device and the fixing member, for example.

[0016] In another aspect of the present invention, the bonding step may be performed before the removing step. According to the present invention, the terminal conductors in a reliably bundled state can be electrically connected, thereby making it possible to manufacture a joined electric wire with stable conductivity.

[0017] The present invention also provides a wire connecting method for electrically connecting exposed terminal conductors of a plurality of insulated electric wires, the method comprising: a bundling step of bundling the insulated electric wires; a fixing step of fixing the terminal conductors of the bundled insulated electric wires with fixing members; and a joining step of setting the insulated electric wires, the terminal conductors of which are fixed by the fixing members, in a joining device and joining the exposed terminal conductors together; The fixing member is a melt-hardening material that hardens after melting. be. In this way, the fixing member is a melt-hardening material that hardens after melting, The terminal conductors can be reliably fixed with the fixing member that has melted and then hardened, which allows the terminal conductors to be easily and reliably bundled. This improves the efficiency of the bundling process and further reduces the movement of the terminal conductors during the fixing process. This allows for more efficient production of joined electric wires with stable conductivity.

[0018] In another aspect of the present invention, before the fixing step, a semi-stripping step is performed in which at least a portion of the insulating coating of the insulated electric wire, the length of which corresponds to the length of the terminal conductor, is separated from the other insulating coatings and shifted toward the tip, and the fixing step includes welding and fixing the tip side of the terminal conductor in the plurality of insulating coatings shifted toward the tip, and the welded and fixed insulating coatings may be used as the molten hardening material.

[0019] According to this invention, the process required to expose the terminal conductors to be joined is performed in the semi-stripping process, and the semi-stripping process is made part of the fixing process, which reduces the amount of work in the fixing process compared to, for example, a case where the terminal conductors are solidified with resin after cutting the insulating coating, etc. This improves the manufacturing efficiency of joined electric wires.

[0020] Furthermore, since the terminal conductors are fixed using the insulating coating that is discarded after exposing the terminal conductors, the terminal conductors can be efficiently fixed together without using any other additional components, and waste materials can be put to good use. Furthermore, the insulating coating removed in the removal step is welded and fixed together, which prevents fine waste from scattering.

[0021] The present invention also provides a wire fixing device used in the manufacture of a joined wire, which includes a plurality of insulated wires and fixing members for fixing the tip sides of a plurality of terminal conductors exposed from the tip of each insulated wire, and in which the terminal conductors fixed by the fixing members are joined, and which is characterized in that it includes a fixing mechanism for fixing the bundled terminal conductors by the fixing members.

[0022] The present invention also provides a joined electric wire manufacturing device that is provided with a plurality of insulated electric wires and fixing members that fix the tip sides of a plurality of terminal conductors exposed from the tip of each insulated electric wire, and that manufactures a joined electric wire in which a plurality of the terminal conductors fixed by the fixing members are joined, and is characterized in that it is provided with a wire arrangement device that arranges the plurality of insulated electric wires, a wire connection device that connects the plurality of terminal conductors, and the above-mentioned wire fixing device.

[0023] According to the present invention, the wire fastening device can fasten the bundled terminal conductors with the fastening member, thereby improving the efficiency of the manufacturing process of the joined wire.

[0024] In one aspect of the present invention, the fixing mechanism may separate at least the length of the terminal conductor of the insulated electric wire from the other insulating coatings, and attach the fixing member to multiple insulating coatings shifted toward the tip end to fix the shifted insulating coatings.

[0025] According to the present invention, the wire fastening device can fix the insulating coatings arranged at the tip ends of the bundled terminal conductors with the fixing member, thereby improving the efficiency of the manufacturing process of the joined electric wire. In addition, the insulating coatings removed in the removal process are welded and fixed together, preventing fine waste from scattering.

[0026] As another aspect of the present invention, the fixing mechanism may include a tape fastening device that fixes the terminal conductor by attaching the fixing member made of adhesive tape to the tip side of the terminal conductor. According to this invention, the adhesive tape can be attached to the terminal conductor easily and with uniform precision using the wire fastening device, thereby improving the efficiency of the manufacturing process of the joined electric wire. Also, since the tip portions of the terminal conductors to be removed in the removal process are fixed and bundled with the adhesive tape, scattering of fine waste can be prevented.

[0027] In another aspect of the present invention, the fixing mechanism may be provided with a resin application device that applies the fixing member made of an ultraviolet-curable resin that hardens when irradiated with ultraviolet light to the tip side of the terminal conductor, and an ultraviolet irradiation device that irradiates ultraviolet light to the tip side of the terminal conductor to which the fixing member has been applied.

[0028] According to this invention, the tip portions of the terminal conductors can be bundled with ultraviolet curing resin using the electric wire fastening device, thereby improving the efficiency of the manufacturing process of the joined electric wire. Also, since the tip portions of the terminal conductors to be removed in the removal process are fixed and bundled with ultraviolet curing resin, scattering of fine waste can be prevented.

[0029] As another aspect of the present invention, the fixing mechanism may be configured with a heating device that melts the fixing member, which is a melt-hardening material that hardens after melting. According to this invention, the end conductors can be bundled with a fixing member attached to the end portion of the end conductor using the wire fixing device, which is heated, melted, and then hardened, thereby improving the efficiency of the manufacturing process of the joined electric wire. Also, since the end portions of the end conductors to be removed in the removal process are fixed and bundled with the fixing member, scattering of fine waste can be prevented.

[0030] In another aspect of the present invention, the fixing mechanism may be configured with a heating device that separates at least the length of the terminal conductor of the insulated electric wire from the other insulating coatings and melts the multiple insulating coatings shifted toward the tip end so that they become a molten hardening material that hardens after melting.

[0031] According to this invention, by using the wire fixing device, the tip portions of the terminal conductors are shifted toward the tip, and the insulating coating is melted and hardened by the heating device, thereby the terminal conductors can be reliably bundled, and the efficiency of the manufacturing process for the joined electric wire can be improved. In addition, since the tip portions of the terminal conductors to be removed in the removal process are fixed and bundled by the hardened insulating coating, scattering of fine waste can be prevented.

[0032] Furthermore, since the terminal conductors are fixed using the insulating coating that is discarded after the terminal conductors are exposed, the terminal conductors can be efficiently fixed together without using any other additional components, and waste materials can be put to good use. [Effects of the Invention]

[0033] According to the present invention, it is possible to provide a wire connecting method, a joined wire, a wire fixing device, and a joined wire manufacturing device that can join end conductors in a bundled state. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. [Figure 2] 1 is a flowchart of a wire connection method. [Figure 3] 10 is a schematic perspective view of a semi-strip process and a gathering process. FIG. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a schematic block diagram of a joining device. [Figure 7] 10A to 10C are cross-sectional views illustrating a bonding step and a removing step. [Figure 8] FIG. [Figure 9] 10 is a flowchart of another wire connection method. [Figure 10] FIG. 10 is a schematic perspective view of a fixing step according to another embodiment. [Figure 11] FIG. 10 is a schematic perspective view of a fixing step according to another embodiment. [Figure 12] FIG. 10 is a schematic perspective view of a fixing step according to another embodiment. [Figure 13] FIG. 10 is a schematic perspective view of a fixing step according to another embodiment. [Figure 14] FIG. 10 is a schematic perspective view of a fixing step according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0035] An embodiment of the present invention will be described below with reference to FIGS. Fig. 1 shows a schematic perspective view of a conductor-bonded electric wire 1, Fig. 2 shows a flowchart of the electric wire connecting method, Fig. 3 shows a schematic perspective view illustrating the semi-stripping step s1 and the bundling step s2, and Fig. 4 shows a schematic perspective view illustrating the fixing step s3.

[0036] Fig. 5 shows a schematic perspective view illustrating the joining step s4, and Fig. 6 shows a block diagram of the joining device. Fig. 7 shows a cross-sectional view illustrating the joining step s4 and the removing step s5. Fig. 8 shows a schematic perspective view of the joined electric wire 10 in which the resin cover 50 is attached to the tip side of the joined terminal conductor 21a. 7 shows a cross-sectional view of the joint portions of the terminal conductors 21a cut along the longitudinal direction L at the center in the width direction W. FIG.

[0037] Here, the up-down direction in FIG. 1 is the up-down direction Z, and the direction in which the conductor-bonded electric wire 1 extends is the longitudinal direction L. The longitudinal direction L and the up-down direction Z are assumed to be perpendicular to each other. The direction perpendicular to the longitudinal direction L and the up-down direction Z in FIG. 1 is assumed to be the width direction W. In FIG. 1, the side where the conductor 2 is exposed along the longitudinal direction L is assumed to be the tip side, and the side opposite to the side where the conductor 2 is exposed is assumed to be the base side. These directions are the same in FIGS. 3 to 5, 7, 8, and 10 to 14.

[0038] The wire connecting method described below is a method for electrically conductively connecting the exposed terminal conductors 21a of multiple covered electric wires 20. This method is a method for manufacturing a conductor-bonded electric wire 1 by gathering multiple covered electric wires 20, each having its terminal conductors 21a exposed from the insulating coating 22 at its tip end, in a desired arrangement, fixing the tip end, and using a wire connecting device 40 to apply ultrasonic vibrations while applying a predetermined compressive force to the multiple terminal conductors 21a arranged in the desired arrangement, thereby electrically connecting the multiple terminal conductors 21a in a manner that allows conductivity.

[0039] As shown in FIG. 1, the conductor-bonded electric wire 1 manufactured by the present invention has terminal joints 4 in which the conductors 2 exposed from the insulating coating 3 at the tip side of each of the six coated electric wires 1a, each having a conductor 2 covered with an insulating coating 3, are joined to the tip portions of the six coated electric wires 1a.

[0040] As described above, this conductor-bonded electric wire 1 is constructed by gathering a plurality of covered electric wires 20 in a desired arrangement and bonding the conductors 21 (terminal conductors 21a). The covered electric wire 20 is composed of the conductor 21, which is a stranded wire formed by twisting together a plurality of aluminum alloy wires, and an insulating coating 22 that covers the outside of the conductor 21 (see FIG. 3). The terminal conductor 21a to be bonded refers to the conductor 21 exposed from the insulating coating 22 at the tip end of the covered electric wire 20.

[0041] Next, the wire arrangement device 30 that arranges the coated wire 20 and the wire connection device 40 that joins the terminal conductor 21a will be briefly described with reference to FIGS. 3, 5 and 6. FIG. As shown in Figure 3, the wire arrangement device 30 has a conductor arrangement section 31 that arranges the terminal conductors 21a exposed from the insulating sheath 22 at the tip side of the insulated wire 20 in a predetermined arrangement, and a sheath arrangement section 32 that arranges the insulating sheath 22 at the base end side of the terminal conductors 21a, arranged along the longitudinal direction L.

[0042] The conductor arrangement section 31 is composed of a pair of conductor-side movable walls 311, 311 that are movable along the width direction W, and a conductor arrangement table 312 on which the terminal conductors 21a are arranged. The conductor-side movable walls 311, 311 are arranged on the upper surface of the conductor arrangement table 312, and are configured so that the spacing between them can be changed as appropriate according to the number and arrangement of the insulated electric wires 20 to be joined. Note that the insulating coating 22 can also be arranged between the conductor-side movable walls 311, 311, with the terminal conductors 21a at the center.

[0043] The sheath placement section 32 is composed of a pair of sheath-side movable walls 321, 321 that are movable along the width direction W, and a sheath placement stand 322 that places the insulating sheath 22. The sheath-side movable walls 321, 321, like the conductor-side movable walls 311, 311, are arranged on the upper surface of the sheath placement stand 322, and are configured so that the spacing between them can be changed as appropriate according to the number and arrangement of the sheathed electric wires 20 to be joined.

[0044] The electric wire arrangement device 30 in this embodiment is not limited to the above-described configuration, and may have any configuration as long as it can arrange the terminal conductors 21 a in a desired arrangement. For example, it may include a member that presses the terminal conductors 21 a and the insulating coatings 22 from above, or it may be configured to arrange only the tip ends of the insulated electric wires 20 in a desired arrangement centered on the terminal conductors 21 a.

[0045] The wire connection device 40 that joins multiple terminal conductors 21a is a typical ultrasonic joining device, and as shown in Figures 5(a) and 5(b), it has an anvil 41 that arranges multiple terminal conductors 21a, a horn 42 that approaches the terminal conductors 21a arranged on the anvil 41 from above and applies ultrasonic vibrations to the terminal conductors 21a, and a regulating section 43 that moves in the width direction W along the bottom surface of the horn 42 and regulates the width direction W of the multiple terminal conductors 21a.

[0046] As shown in FIG. 6, the electric wire connecting device 40 includes an ultrasonic vibration generating unit 44 that ultrasonically vibrates the horn 42, a horn driving unit 45 that moves the horn 42 in the vertical direction Z, a jaw driving unit 46 that moves the regulating unit 43 in the width direction W, and a control unit 47 to which the ultrasonic vibration generating unit 44, the horn driving unit 45, and the jaw driving unit 46 are connected and which controls the ultrasonic vibration generating unit 44, the horn driving unit 45, and the jaw driving unit 46.

[0047] The control unit 47 can control ON / OFF of the ultrasonic vibration of the horn 42 and control the driving of the horn driving unit 45 and the jaw driving unit 46. This makes it possible to ultrasonically vibrate the horn 42 while controlling the movement of the horn 42 in the up-down direction Z and the movement of the restricting unit 43 in the width direction W so that the pressure acting on the terminal conductors 21 a of the multiple coated electric wires 20 becomes a predetermined value, thereby joining the multiple terminal conductors 21 a.

[0048] Next, a method for manufacturing the conductor-bonded electric wire 1 using the electric wire arrangement device 30 and the electric wire connection device 40 will be described. The wire connection method for the conductor-bonded electric wire 1 mainly consists of five steps, as shown in Fig. 2. Specifically, the wire connection method consists of a semi-stripping (also called half-stripping) step s1 of stripping the insulating coating 22 at the tip end of the coated electric wire 20 to expose the conductor 21, a bundling step s2 of bundling the plurality of coated electric wires 20 with the exposed conductors 21 in a desired arrangement, a fixing step s3 of fixing the exposed conductors 21 of the bundled plurality of coated electric wires 20, a joining step s4 of joining the exposed conductors 21 of the bundled plurality of coated electric wires 20, and a removal step s5 of removing the fixing member fixed in the fixing step s3.

[0049] Each step will be described in detail below. First, as shown in FIG. 3, the insulating coating 22 at the tip end of the coated electric wire 20 is cut and shifted a predetermined length toward the tip end along the longitudinal direction L to expose the conductor 21 (semi-stripping step s1).

[0050] Here, the insulating coating 22 moved toward the tip side is referred to as the slit coating 22a, and the exposed conductor 21 is referred to as the terminal conductor 21a. That is, the slit coating 22a is the insulating coating 22 that is at least as long as the terminal conductor 21a, and is shifted toward the tip side so as to be separated from the insulating coating 22 on the base end side of the terminal conductor 21a. For convenience, as shown by the dotted line in FIG. 3, the tip portion of the conductor 21 is inserted up to the center portion of the slit coating 22a.

[0051] Next, the plurality of coated electric wires 20 are arranged together in the electric wire arrangement device 30 so that the terminal conductors 21a exposed at the tip ends of the coated electric wires 20 are arranged in a predetermined arrangement (arranging step s2). In this embodiment, an example is shown in which three coated electric wires 20 arranged in the width direction W are arranged in two rows in the vertical direction Z.

[0052] Specifically, the conductor side movable walls 311, 311 are moved in the width direction W so that a total of six terminal conductors 21a can be maintained in an array of three on each side, and the terminal conductors 21a are placed on the conductor arrangement stand 312 so that they are sandwiched between the conductor side movable walls 311, 311.

[0053] Furthermore, in order to maintain the same arrangement of the insulating coatings 22 on the base end sides of the terminal conductors 21a, the coating-side movable walls 321, 321 are moved in the width direction W, and the six insulating coatings 22 are arranged on the coating arrangement table 322 so as to be sandwiched between the coating-side movable walls 321, 321. This allows the six coated electric wires 20 to be arranged in a predetermined arrangement (assembling step s2). The arrangement of the insulated electric wires 20 is not limited to this arrangement and can be changed as appropriate. Also, the number of insulated electric wires 20 arranged in the vertical direction Z does not need to be the same and may be different.

[0054] Also, although not shown in this embodiment, for example, the insulating coating 22 on the base end side of the terminal conductor 21a or the tip end side of the slit coating 22a may be aligned so that the positions of the base end side or tip end side of the terminal conductor 21a are aligned.

[0055] 4, with the six insulated electric wires 20 arranged in the desired arrangement on the electric wire arrangement device 30, a resin cover 50 made of a heat-melting hardening material is attached to each of the slit coatings 22a that have been moved to the tip side of the insulated electric wires 20. The resin cover 50 is made of a thermoplastic resin that melts when heated and hardens when cooled.

[0056] Then, the resin cover 50 is heated to melt it, and then cooled and hardened, thereby fixing the six slit coatings 22a together with the resin cover 50. This makes it possible to fix the terminal conductors 21a of the bundled coated electric wires 20 via the resin cover 50 fixed to the slit coatings 22a (fixing step s3).

[0057] In this way, by grouping six insulated electric wires 20 together so that the positions of the terminal conductors 21a are aligned, and fixing them together with the resin cover 50, it is possible to prevent the terminal conductors 21a from scattering, for example, when moving the grouped insulated electric wires 20 from the electric wire arrangement device 30 to the electric wire connection device 40.

[0058] The process of attaching the resin covers 50 to the plurality of slit coatings 22a that have been grouped together so that the positions of the terminal conductors 21a are aligned may be performed, for example, by manually attaching the resin covers 50 to the plurality of slit coatings 22a and then fixing them by heating and melting them, or may be performed using a wire fixing device that includes an attachment mechanism that grips the resin covers 50 and attaches them to the slit coatings 22a, and a fixing mechanism (heating device) that heats and melts the resin covers 50 attached to the slit coatings 22a. Here, the wire fixing device may include a cooling mechanism that cools the melted resin covers 50.

[0059] Next, in the electric wire arrangement device 30, the six coated electric wires 20 with the six terminal conductors 21a fixed by the resin cover 50 are set in the electric wire connection device 40, and the six terminal conductors 21a are joined (joining step s4). Specifically, as shown in Figures 5(a) and 7(a), the terminal conductors 21a of the coated electric wire 20, the tip of which is fixed with a resin cover 50, are placed on the anvil 41. Then, as shown in Figures 5(b) and 7(b), the restricting portion 43 is moved in the width direction W while the horn 42 is moved in the up-down direction Z to apply a predetermined pressure to the six terminal conductors 21a and ultrasonically vibrate the horn 42 to ultrasonically join the terminal conductors 21a (joining step s4).

[0060] Here, since the terminal conductors 21a are fixed via the resin cover 50 that fixes the slit coating 22a, the six terminal conductors 21a can be ultrasonically joined while maintaining the desired arrangement more reliably. This produces a joined electric wire 10 with the resin cover 50 attached to the tip end (see FIG. 8).

[0061] That is, the joined electric wire 10 is provided with a plurality of bundled coated electric wires 20 and a resin cover 50 that fixes the tip side of a plurality of terminal conductors 21a exposed from the tip of each coated electric wire 20, and has a terminal conductor joint portion 11 where the plurality of terminal conductors 21a fixed by the resin cover 50 are joined.

[0062] 7(c) and 7(d), the tip side of the terminal conductors 21a in the joined electric wire 10 to which the multiple terminal conductors 21a are joined is cut with a cutting tool D. This makes it possible to remove the integrated multiple slit coatings 22a together with the resin cover 50 (removal step s5), and the conductor-joined electric wire 1 can be manufactured. The conductor-bonded electric wire 1 manufactured by cutting the tip end of the bonded electric wire 10 in this manner may be bundled together to form a wire harness, or the conductor-bonded electric wire 1 may form part of the wire harness. In addition, in Fig. 7(d), when cutting the tip end of the terminal conductor 21a of the bonded electric wire 10, the cut is made near the tip of the terminal conductor joint 11, but the cut may also be made at a portion of the terminal conductor 21a that is located further tip-side than the terminal conductor joint 11.

[0063] Thus, the wire connecting method is a method for electrically connecting the exposed terminal conductors 21a of a plurality of insulated wires 20 in a conductive manner, and includes a bundling process s2 for bundling each of the insulated wires 20, a fixing process s3 for fixing the terminal conductors 21a of the bundled insulated wires 20 with a resin cover 50, and a joining process s4 for setting the insulated wires 20 with the terminal conductors 21a fixed with the resin cover 50 in a wire connecting device 40 and joining the terminal conductors 21a.

[0064] The joined electric wire 10 is provided with a plurality of bundled coated electric wires 20 and a resin cover 50 that fixes the tip side of a plurality of terminal conductors 21a exposed from the tip of the coated electric wire 20, and the plurality of terminal conductors 21a fixed by the resin cover 50 are joined, and the resin cover 50 is a molten hardening material that hardens after melting.

[0065] This allows the end conductors 21a exposed from the insulating coating 22 to be fixed with the resin cover 50 and prevented from scattering, so that the end conductors 21a fixed in a collected state in a desired arrangement and positional relationship can be placed in the wire connection device 40 and electrically connected to the end conductors 21a. Therefore, a conductor-bonded electric wire 1 with stable conductivity can be manufactured.

[0066] Furthermore, by performing the removal step s5 of removing the resin cover 50, it is possible to remove the tip side of the joined terminal conductor 21a, which becomes unnecessary. Note that the removal step s5 is not necessarily required, and can be performed as appropriate.

[0067] Furthermore, by performing the joining step s4 before the removing step s5, the terminal conductors 21a bundled by the resin cover 50 can be placed in the electric wire connection device 40 and joined, so that the bundled terminal conductors 21a can be reliably connected to enable electrical conductivity. This allows the manufacture of a conductor-bonded electric wire 1 with stable electrical conductivity.

[0068] Furthermore, since the resin cover 50 is a melt-hardening material that hardens after melting, the terminal conductors 21a can be reliably fixed by the melted and hardened resin cover 50, allowing the terminal conductors 21a to be easily and reliably bundled. This improves the efficiency of the bundling step s2 and further prevents the position of each terminal conductor 21a from shifting in the fixing step s3. This allows the conductor-bonded electric wire 1 to be manufactured more efficiently and with stable conductivity.

[0069] In correspondence between the configuration of this invention and the above-mentioned embodiment, The coated wire corresponds to the coated wire 20, The terminal conductor corresponds to the terminal conductor 21a, The assembling step corresponds to the assembling step s2, The fixing member corresponds to the resin cover 50, The fixation step corresponds to fixation step s3, The joining device corresponds to the wire connecting device 40, The joining step corresponds to joining step s4, The removal step corresponds to removal step s5, The insulating coating corresponds to the insulating coating 22, The semi-strip process corresponds to the semi-strip process s1, The joining wire corresponds to the joining wire 10, The present invention is not limited to the configurations of the above-described embodiments, and many other embodiments can be obtained.

[0070] Other embodiments will be briefly described below. In the other embodiments described below, the same configurations and contents are denoted by the same numbers and their description is omitted. Furthermore, the contents described in each embodiment are not limited to each embodiment, and can be appropriately combined as long as the effect is achieved.

[0071] For example, in this embodiment, the terminal conductor 21a is ultrasonically joined using the electric wire connecting device 40, but the joining method is not particularly limited as long as it is possible to join the terminal conductor 21a, and for example, joining using a high-energy beam such as laser welding, or using an electrode such as resistance welding may be used.

[0072] Furthermore, for example, in this embodiment, the removal process s5 for removing the resin cover 50 that fixes the terminal conductor 21a is performed after the joining process s4 for joining the terminal conductor 21a using the wire connecting device 40, but the removal process s5 may also be performed before the joining process s4, for example, as shown in the flowchart of FIG. 9.

[0073] In this method, after attaching and fixing the resin cover 50 to the slit coating 22a of the coated electric wire 20 placed on the electric wire placement device 30 (fixing step s3), the bundled coated electric wires 20 are placed on the anvil 41 (electric wire placement step s3-2). Then, after removing the resin cover 50 by, for example, cutting the terminal conductor 21a on the base end side of the resin cover 50 (removing step s5), the terminal conductor 21a is ultrasonically joined using the electric wire connection device 40 (joining step s4).

[0074] In this way, by performing the removing step s5 before the joining step s4, the terminal conductors 21a can be electrically connected without worrying about interference between the wire connecting device 40 and the resin cover 50. Therefore, the mental burden on the worker when placing a group of multiple covered electric wires 20 on the anvil 41 can be reduced, and the conductor-joined electric wire 1 can be produced stably.

[0075] Furthermore, in this embodiment, the terminal conductor 21a is fixed by attaching a resin cover 50 to the slit coating 22a, but multiple terminal conductors 21a may also be fixed by something other than the resin cover 50, as shown in Figures 10 to 14, for example.

[0076] Other methods for fixing the terminal conductor 21a will be briefly described below with reference to FIGS. FIG. 10 is a schematic perspective view showing a method for fixing the terminal conductor 21a with the first fixing member 60, and FIG. 11 is a schematic perspective view showing a method for fixing the terminal conductor 21a with the second fixing member .

[0077] Figure 12 shows a schematic oblique view of a method for fixing the terminal conductor 21a using tape T, Figure 13 shows a schematic oblique view of a method for fixing the terminal conductor 21a using ultraviolet-curable resin B, and Figure 14 shows a schematic oblique view of a method for fixing the terminal conductor 21a using slit coating 22a.

[0078] For example, as shown in Figures 10 and 11, by attaching another fixing member (first fixing member 60 or second fixing member 70) to the tip of the slit coating 22a instead of the resin cover 50, multiple terminal conductors 21a can be fixed (fixing process s3).

[0079] The first fixing member 60 will be described below. As shown in FIG. 10(a), the first fixing member 60 is made up of a bottom portion 61 and an upper portion 62 that can be assembled in the vertical direction Z.

[0080] The bottom 61 is an approximately prismatic body having a rectangular shape when viewed from above, and the central portion of the upper surface is provided with a lower placement recess 611 for placing the slit covering 22a, and a pair of protrusions 612, 612 protruding upward.

[0081] The lower arrangement recess 611 is a groove formed by recessing the center portion of the upper surface along the longitudinal direction L, and is configured so that a plurality of slit coatings 22a can be arranged therein. The protrusions 612 are generally cylindrical protrusions with tapered tips, and are provided in pairs in the width direction W, sandwiching the lower recess 611. The protrusions 612 are made of a thermoplastic resin, and are configured to be deformable by applying heat.

[0082] The upper part 62 is a substantially prismatic column formed in a rectangular shape in a plan view, similar to the bottom part 61, and is configured so that its height (length in the vertical direction Z) is shorter than the height (length in the vertical direction Z) of the convex parts 612, 612. The upper part 62 is provided with an upper arrangement recess 621 that faces the lower arrangement recess 611 when combined with the bottom part 61, and insertion holes 622, 622 through which the convex parts 612, 612 can be inserted.

[0083] The upper-side recess 621 is a groove formed by recessing the central portion of the bottom surface of the upper portion 62 along the longitudinal direction L, and together with the lower-side recess 611, it can sandwich and hold multiple slit coatings 22a when the bottom portion 61 and the upper portion 62 are combined.

[0084] The insertion hole 622 is a cylindrical through-hole that penetrates the upper part 62 in the up-down direction Z, and is provided at a position facing the convex parts 612, 612 when the bottom part 61 and the upper part 62 are combined. The inner diameter of the insertion hole 622 is approximately the same as the outer diameter of the convex part 612.

[0085] The first fixing member 60 configured in this manner can be assembled from above the bottom 61 by inserting the protrusions 612, 612 into the insertion holes 622, 622 in a state in which the slit coating 22a, which has been moved toward the tip side in the semi-stripping process s1, is positioned in the lower positioning recess 611 (see Figure 10(a)), and then the upper part 62 can be assembled from above the bottom 61 (see Figure 10(b)).

[0086] Then, by pressing a high-temperature pressing member X from above the upper part 62 (see FIG. 10(c)), the upper end portions of the convex parts 612, 612 made of thermoplastic resin are deformed into a disk shape, and the bottom part 61 and the upper part 62 can be fixed together (see FIG. 10(d)).

[0087] This allows the plurality of slit coatings 22a to be sandwiched between the lower arrangement recess 611 and the upper arrangement recess 621, and the plurality of slit coatings 22a to be held together. Therefore, similar to the resin cover 50, the first fixing member 60 can fix the plurality of terminal conductors 21a.

[0088] Here, the insulating coating 22 at the tip end of the insulated electric wire 20 is cut, and the slit coating 22a is shifted toward the tip end by a predetermined length along the longitudinal direction L, and the first fixing member 60 is assembled to fix the terminal conductor 21a. However, for example, the insulating coating 22 at the tip end of the insulated electric wire 20 may be cut and removed from the tip portion of the conductor 21, and the first fixing member 60 may be assembled directly to the exposed conductor 21 to fix the terminal conductor 21a.

[0089] 11, instead of the resin cover 50 and the first fixing member 60, a second fixing member 70 may be used to fix the plurality of terminal conductors 21a. The second fixing member 70 is made up of a base portion 71, a moving portion 72 that is movable in the vertical direction Z relative to the base portion 71, and an upper portion 73 that is disposed above the moving portion 72.

[0090] Like the bottom 61, the base 71 is an approximately rectangular pillar having a rectangular shape when viewed from above, and the central part of the upper surface is provided with a lower placement recess 711 for placing the slit covering 22a, and a pair of support pillars 712, 712 that stand upright.

[0091] The lower arrangement recess 711 is a groove formed by recessing the center portion of the upper surface along the longitudinal direction L, and is configured so that a plurality of slit coatings 22a can be arranged therein. The support columns 712 are generally cylindrical bodies erected on the upper surface of the base 71, and are provided in pairs in the width direction W, sandwiching the lower arrangement recess 711. The upper ends of the support columns 712 are fixed to the bottom surface of the upper portion 73.

[0092] The movable part 72 is an approximately rectangular pillar-shaped body that is configured in a rectangular shape when viewed from above, similar to the base part 71, and when combined with the base part 71, it has an upper arrangement recess 721 that faces the lower arrangement recess 711, and insertion holes 722, 722 through which the supports 712, 712 can be inserted.

[0093] The upper arrangement recess 721 is a groove formed by recessing the central part of the bottom of the moving part 72 along the longitudinal direction L, and together with the lower arrangement recess 711, it can sandwich and hold multiple slit coatings 22a when the base 71 and the moving part 72 are combined. The insertion hole 722 is a cylindrical through-hole that penetrates the moving part 72 in the up-down direction Z, and the support posts 712, 712 are inserted therethrough.

[0094] The upper part 73 is an approximately rectangular pillar-shaped body in a plan view, with the upper end of the support 712 fixed thereto, and is equipped with an operating part 731 that controls the movement of the moving part 72 along the vertical direction Z, and a screw hole 732 through which the operating part 731 is inserted.

[0095] The operating unit 731 is a cylindrical body with a screw thread on its outer circumferential surface, and its lower end is rotatably fixed to the upper surface of the moving unit 72, so that the moving unit 72 can move in the vertical direction Z as the operating unit 731 moves in the vertical direction Z. A driving unit 733 is provided at the upper end of the operating unit 731.

[0096] The screw hole 732 is configured to be able to threadably engage with the operating unit 731 that passes through the central portion of the upper portion 73, and the operating unit 731 can be moved along the vertical direction Z by rotating the operating unit 731 with the driving unit 733.

[0097] The second fixing member 70 configured in this manner can be assembled from above the base 71 by positioning the plurality of slit coatings 22a, in which the insulating coating 22 at the tip end has been moved toward the tip end in the semi-stripping process s1, in the lower positioning recess 711 (see Figure 11(a)), and then moving the moving part 72 along the vertical direction Z by rotating the operating part 731 with the driving part 733 (see Figure 11(b)).

[0098] This allows the plurality of slit coatings 22a to be sandwiched between the lower arrangement recess 711 and the upper arrangement recess 721, and the plurality of slit coatings 22a to be held together. Therefore, similar to the resin cover 50, the second fixing member 70 can fix the plurality of terminal conductors 21a.

[0099] Here, the insulating coating 22 at the tip end of the insulated electric wire 20 is cut, and the second fixing member 70 is attached to the slit coating 22a that has been shifted toward the tip end by a predetermined length along the longitudinal direction L to fix the terminal conductor 21a. However, for example, the insulating coating 22 at the tip end of the insulated electric wire 20 may be cut and removed from the tip portion of the conductor 21, and the second fixing member 70 may be attached directly to the exposed conductor 21 to fix the terminal conductor 21a.

[0100] Also, instead of using the resin cover 50, as shown in FIG. 12, a tape fastening device 80 can be used to fasten the tip portions of the slit coating 22a with adhesive tape T, thereby fixing the multiple terminal conductors 21a.

[0101] The tape fastening device 80, which applies tape T to the tip portion of the insulating coating 22, is composed of a tape holding unit 81 that holds the tape T so that the main surface of the tape T faces the longitudinal direction L, cutting units 82, 82 that cut the tape T, and an application unit 83 that applies the tape T to the slit coating 22a.

[0102] The tape holding portion 81 holds one end of the tape T so that the adhesive surface of the main surface of the tape T faces the base end side in the longitudinal direction L. The cutting unit 82 is a housing configured to be movable along the width direction W, and is equipped with a cutter that cuts the tape T in the width direction W. As shown in FIG. 12(a), two cutting units 82 are arranged in the vertical direction Z, sandwiching the slit coating 22a therebetween.

[0103] The pasting section 83 is a housing configured to be movable along the longitudinal direction L, and is provided with a tip accommodating section 831 that can accommodate the tip of the slit covering 22a, and a folding section 832 that folds the upper and lower ends of the cut tape T.

[0104] The tip accommodating portion 831 is a recess formed in the center portion of the attaching portion 83 in substantially the same shape as the tip portions of the plurality of slit coverings 22a, and is provided so that the base end side in the longitudinal direction L is open. The folded-in portions 832, 832 are slits formed above and below the tip accommodating portion 831 along the longitudinal direction L, and are configured to be slightly thicker than the thickness of the tape T.

[0105] Next, a method for applying the tape T to the tip portions of the plurality of slit covers 22a using the tape fastening device 80 configured as described above will be briefly described with reference to FIG. First, the tape T is held by the tape holding unit 81 so that the contact surface of the tape T faces the base end in the longitudinal direction L, and the tip of the slit covering 22a is brought into contact with the contact surface of the tape T. Next, the cutting units 82, 82 are moved along the width direction W to cut the upper and lower parts of the slit covering 22a on the tape T with the cutting units 82, 82, and the attaching unit 83 is moved toward the base end in the longitudinal direction L.

[0106] As a result, the tip portion of slit covering 22a with tape T attached to the tip is accommodated in tip accommodation portion 831, and tape T is attached to both end portions in the width direction W and the top and bottom surfaces of slit covering 22a. Also, by guiding portions of tape T into folding portions 832, 832, the contact surfaces of tape T can be attached to each other above and below slit covering 22a.

[0107] This allows the tape T to be attached to the tip portions of the slit coatings 22a, and the multiple slit coatings 22a to be held together. Therefore, similar to the resin cover 50, the multiple terminal conductors 21a can be fixed with the tape T (see FIG. 12(b)).

[0108] Here, the insulating coating 22 at the tip end of the coated electric wire 20 is cut, and the tape T is applied to the slit coating 22a that has been shifted toward the tip end by a predetermined length along the longitudinal direction L to fix the terminal conductor 21a. However, for example, the insulating coating 22 at the tip end of the coated electric wire 20 may be cut and removed from the tip portion of the conductor 21, and the tape T may be applied directly to the exposed conductor 21 to fix the terminal conductor 21a.

[0109] Furthermore, as shown in Figure 13, ultraviolet curable resin B can be applied to the slit coating 22a from the tip of a resin application device G (see Figure 13(a)), and ultraviolet rays UV can be irradiated onto the ultraviolet curable resin B from an ultraviolet irradiation device Y to fix the terminal conductor 21a (see Figure 13(b)).

[0110] This method also allows the tip portions of the multiple slit coatings 22a to be fixed with the UV-curable resin B, thereby holding the multiple slit coatings 22a together. Therefore, similar to the resin cover 50, the multiple terminal conductors 21a can be fixed.

[0111] Here, the insulating coating 22 at the tip end of the coated electric wire 20 is cut, and the slit coating 22a is shifted toward the tip end by a predetermined length along the longitudinal direction L, and ultraviolet curing resin B is applied to the slit coating 22a, and ultraviolet rays UV are irradiated from the ultraviolet irradiation device Y. However, for example, the insulating coating 22 at the tip end of the coated electric wire 20 may be cut and removed from the tip portion of the conductor 21, and ultraviolet curing resin B may be applied directly to the exposed conductor 21, and ultraviolet rays UV may be irradiated from the ultraviolet irradiation device Y.

[0112] Furthermore, as shown in Figure 14, the insulating coating 22 may be made of a thermoplastic resin, which is a melt-hardening material, and the terminal conductor 21a may be fixed by welding and fixing the tip side of the terminal conductor 21a in multiple slit coatings 22a shifted toward the tip side. A method for welding and fixing the slit covering 22a will be briefly described below with reference to FIG.

[0113] First, heating devices 90, 90 capable of heating opposing surfaces 91, 91 facing the slit coating 22a to a high temperature are placed above and below the tip portion of the slit coating 22a, more specifically, the tip portion of the slit coating 22a, where the insulating coating 22 on the tip side has been moved toward the tip side in the semi-stripping process s1, and which is located further tip than the terminal conductor 21a and where the conductor 21 is not inserted (see Figure 14(a)).

[0114] Next, the heating devices 90 are moved in the vertical direction Z so that the heated opposing surfaces 91 approach the slit coating 22a, and the opposing surfaces 91 are brought into contact with the slit coating 22a, and the high-temperature opposing surfaces 91 are pressed against the slit coating 22a for a predetermined time (see FIG. 14(b)). This melts the slit coating 22a that comes into contact with the opposing surfaces 91 of the heating devices 90.

[0115] Then, by moving the heating devices 90 in the vertical direction Z so that the opposing surfaces 91 are separated from the slit coatings 22a, the melted slit coatings 22a are naturally cooled and hardened. This forms a welded portion 23 where the multiple slit coatings 22a are fixed together, and the multiple slit coatings 22a can be integrated (see FIG. 14(c)). Therefore, the terminal conductor 21a can be fixed by the slit coatings 22a.

[0116] In this way, the welded and fixed insulating coating 22 may be made of a molten hardening material, and before the fixing step s3, a semi-stripping step s1 may be performed in which the insulating coating 22 of the length of the exposed conductor of the insulated electric wire 20 is separated from the insulating coating 22 on the base end side of the terminal conductor 21a and shifted toward the tip side, and as the fixing step s3, the tip side of the terminal conductor 21a of the multiple insulating coatings 22 shifted toward the tip side may be welded and fixed.

[0117] As a result, the process required to expose the terminal conductors 21a to be joined is performed in the semi-stripping process s1, and by making the semi-stripping process s1 a part of the fixing process s3, the amount of work in the fixing process s3 can be reduced compared to when the insulating coating 22 is cut and then the terminal conductors 21a are covered and hardened with the resin cover 50. This improves the manufacturing efficiency of the conductor-bonded electric wire 1.

[0118] Furthermore, since the terminal conductors 21a are fixed using the insulating coating 22 that is discarded after exposing the terminal conductors 21a, the terminal conductors 21a can be efficiently fixed together without using any other additional components, and waste materials can be put to good use. Furthermore, the insulating coating 22 removed in the removing step s5 is welded and fixed together, so that small waste pieces are not scattered.

[0119] Furthermore, in this embodiment, the tip portion of the insulating coating 22 is moved toward the tip side in the longitudinal direction L so as to cover the tip portion of the conductor 21, but the slit coating 22a does not necessarily have to be provided on the tip side of the terminal conductor 21a, and for example, the slit coating 22a may be removed from the tip portion of the conductor 21. In other words, a resin cover 50 or the like may be attached to the tip portion of the conductor 21 from which the slit coating 22a has been removed, thereby fixing the tip portion of the conductor 21 (terminal conductor 21a).

[0120] As described above, the resin cover 50, the first fixing member 60, or the like is used as a fixing member for fixing the plurality of terminal conductors 21a. In addition to the above, a metal may be used to cover and fix the grouped terminal conductors 21a, or a chemical may be applied to or soaked into the terminal conductors 21a.

[0121] Furthermore, in the removal process s5, a portion of the joined terminal conductor 21a is cut, including the portion where the resin cover 50, which is the fixing member, is fixed. However, the fixing member may be removed by cutting the unjoined terminal conductor 21a on the tip side of the terminal conductor joint portion 11, or only the fixing member may be removed. Furthermore, in the removing step s5, the fixing member may be removed by dissolving the terminal conductor 21a that is not joined on the tip side of the terminal conductor joint portion 11 or on the tip side of the terminal conductor joint portion 11, for example.

[0122] In this embodiment, the movement of the joined electric wires 10 and bundles of insulated electric wires 20 between the electric wire placement device 30 and the electric wire connection device 40, and between the electric wire connection device 40 and a cutting device having the cutting tool D, may be carried by an automatic conveying device such as a robot, or may be carried by a person. Note that the joined electric wires 10 and bundles of insulated electric wires 20 may be moved by an automatic conveying device only between specific devices, and carried by a person between other devices. [Explanation of symbols]

[0123] 10 Junction wire 20. Insulated wire 21a Terminal conductor 22 Insulation coating 22a Slit Coverage 23 Welded area 40 Wire connection device 50 Resin cover 60 First fixing member 70 Second fixing member B UV curable resin T-tape s1 Semi-strip process s2 Summary process s3 Fixed process s4 Joining process s5 removal process

Claims

1. A wire connecting method for electrically connecting exposed terminal conductors of a plurality of coated wires, the method comprising: a bundling step of bundling the insulated electric wires; a fixing step of fixing the terminal conductors of the bundled plurality of coated electric wires with a fixing member; a joining step of setting the plurality of coated electric wires, to which the plurality of terminal conductors have been fixed by the fixing member, in a joining device and joining the plurality of exposed terminal conductors; The fixing member is a melt-hardening material that hardens after melting. Wire connection method.

2. Before the fixing step, a semi-stripping step is performed in which at least a portion of the insulating coating of the terminal conductor of the insulated electric wire is separated from the other insulating coating and shifted toward the tip end, The fixing step includes welding and fixing the distal end portions of the insulating coatings shifted toward the distal end from the terminal conductors, The welded and fixed insulating coating is used as the melt-hardening material. The wire connecting method according to claim 1 .

3. A removal step of removing the fixing member is performed. The wire connecting method according to claim 1 or 2.

4. The removing step is performed before the bonding step. The wire connecting method according to claim 3.

5. The bonding step is performed before the removing step. The wire connecting method according to claim 3.

6. A wire connecting method for electrically connecting exposed terminal conductors of a plurality of coated wires, the method comprising: a bundling step of bundling the insulated electric wires; a fixing step of fixing the terminal conductors of the bundled plurality of coated electric wires with a fixing member; a joining step of setting the plurality of coated electric wires, to which the plurality of terminal conductors have been fixed by the fixing member, in a joining device and joining the plurality of exposed terminal conductors; performing a removal step of removing the fixing member; The removing step is performed before the bonding step. Wire connection method.

7. A plurality of bundled insulated electric wires; a fixing member for fixing the tip sides of the plurality of terminal conductors exposed from the tip of each of the coated electric wires, The plurality of terminal conductors fixed by the fixing member are joined together, The fixing member is a molten hardening material obtained by separating at least the length of the terminal conductor of the insulated electric wire from the other insulating coatings, shifting the insulating coatings toward the tip side, and then melting and hardening the insulating coatings. Junction wire.

8. A plurality of bundled insulated electric wires; a fixing member for fixing the tip sides of the plurality of terminal conductors exposed from the tip of each of the coated electric wires, The plurality of terminal conductors fixed by the fixing member are joined together, the fixing member is a molten hardening material that is hardened after being melted, At least the length of the terminal conductor of the insulated electric wire is separated from the other insulating coatings, and the fixing member is attached to the insulating coatings shifted toward the tip side to fix the shifted insulating coatings. Junction wire.

9. A wire fixing device used in manufacturing a joined wire, the wire fixing device including a plurality of insulated wires and fixing members for fixing tip sides of a plurality of terminal conductors exposed from the tip ends of the insulated wires, the terminal conductors fixed by the fixing members being joined together, a fixing mechanism for fixing the bundled terminal conductors with the fixing member; The fixing mechanism includes: The method comprises: separating at least the length of the terminal conductor of the insulated electric wire from the other insulating coatings; and melting the insulating coatings shifted toward the tip side to form a molten hardening material that hardens after melting; Wire fixing device.

10. A wire fixing device used in manufacturing a joined wire, the wire fixing device including a plurality of insulated wires and fixing members for fixing tip sides of a plurality of terminal conductors exposed from the tip ends of the insulated wires, the terminal conductors fixed by the fixing members being joined together, a fixing mechanism for fixing the bundled terminal conductors with the fixing member; The fixing mechanism includes: At least the length of the terminal conductor of the insulated electric wire is separated from the other insulating coatings, and the fixing member is attached to the insulating coatings shifted toward the tip side to fix the shifted insulating coatings. Wire fixing device.

11. A wire fixing device used in manufacturing a joined wire, the wire fixing device including a plurality of insulated wires and fixing members for fixing tip sides of a plurality of terminal conductors exposed from the tip ends of the insulated wires, the terminal conductors fixed by the fixing members being joined together, a fixing mechanism for fixing the bundled terminal conductors with the fixing member; The fixing mechanism includes: a heating device that melts the fixing member, which is a melt-hardening material that hardens after melting; Wire fixing device.

12. A wire fixing device used in manufacturing a joined wire, the wire fixing device including a plurality of insulated wires and fixing members for fixing tip sides of a plurality of terminal conductors exposed from the tip ends of the insulated wires, the terminal conductors fixed by the fixing members being joined together, a fixing mechanism for fixing the bundled terminal conductors with the fixing member; The fixing mechanism includes: A tape fastening device is provided that fastens the terminal conductor by attaching the fixing member made of adhesive tape to the tip side of the terminal conductor. Wire fixing device.

13. A wire fixing device used in manufacturing a joined wire, the wire fixing device including a plurality of insulated wires and fixing members for fixing tip sides of a plurality of terminal conductors exposed from the tip ends of the insulated wires, the terminal conductors fixed by the fixing members being joined together, a fixing mechanism for fixing the bundled terminal conductors with the fixing member; The fixing mechanism includes: a resin applicator for applying the fixing member made of an ultraviolet curable resin that is cured by irradiation of ultraviolet light to the tip side of the terminal conductor; an ultraviolet irradiation device that irradiates ultraviolet light onto the tip side of the terminal conductor to which the fixing member is applied, Wire fixing device.

14. A bonded electric wire manufacturing apparatus includes a plurality of coated electric wires and fixing members for fixing tip sides of a plurality of terminal conductors exposed from the tip ends of the coated electric wires, and the device manufactures a bonded electric wire in which the plurality of terminal conductors fixed by the fixing members are joined together, an electric wire arrangement device that arranges the plurality of covered electric wires; a wire connection device for connecting the plurality of terminal conductors; A wire fixing device according to any one of claims 9 to 13 is provided. Bonded wire manufacturing equipment.

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