JP6738665B2 - Method and device for manufacturing electric wire with terminal - Google Patents

Description

The present invention relates to a method and an apparatus for manufacturing an electric wire with a terminal used in, for example, an automobile.

Conventionally, in fields such as automobiles, OA equipment, and home electric appliances, electric wires made of a copper-based material having excellent electrical conductivity have been used as power lines and signal lines. In particular, in the field of automobiles, high performance and high functionality of vehicles are being rapidly advanced, and various kinds of electric devices and control devices mounted on vehicles are increasing. Therefore, along with this, the number of electric wires with terminals used tends to increase.

On the other hand, as environmental issues are drawing attention, weight reduction of automobiles is required. Therefore, there is a problem of an increase in weight due to an increase in usage of the wire harness. For this reason, lightweight aluminum electric wires have been attracting attention in place of the conventionally used copper wires.

Here, a connecting terminal is used when connecting such electric wires to each other or at a connecting portion such as a device. However, even in the case of an electric wire with a terminal using an aluminum electric wire, copper having excellent electric characteristics may be used in the terminal portion due to the reliability of the connection portion and the like. In such a case, an aluminum electric wire and a copper terminal are joined and used.

However, when different metals are brought into contact with each other, so-called electrolytic corrosion may occur due to the difference in standard electrode potential. In particular, since the standard electrode potential difference between aluminum and copper is large, corrosion of the aluminum side, which is electrically base, progresses due to the influence of water splashing on the contact portion and dew condensation. As a result, the connection between the wire and the terminal at the connection part becomes unstable, increasing the contact resistance, increasing the electric resistance due to the decrease in the wire diameter, and even breaking the wire, which may lead to malfunction of the electrical component or stop its function. is there.

For this reason, a method has been proposed in which the connection portion between the electric wire and the terminal is covered with a resin member (for example, Patent Document 1).

JP, 2005-153721, A

In the conventional anti-food material applying step, in order to apply evenly with a small amount of resin, the resin particles remaining in the tip of the discharge needle are applied to a plurality of places of the terminal in contact with each other. However, with such a method, although the anticorrosion terminal can be manufactured, the dropping step and the terminal setting take time. Further, since the control in the Z direction is required, there is a problem that the takt time of manufacturing is long and the productivity is low.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a method of manufacturing an electric wire with a terminal and the like, which can reduce the takt time of manufacturing.

In order to achieve the above-mentioned object, a first aspect of the present invention is to cover a coated conductor wire including a coating portion and a conductive wire exposed from a tip of the coating portion, a conductor wire crimping portion for crimping the conductive wire, and crimping the coating portion. A terminal having a coated crimp portion, and a resin-coated pre-electric wire having a terminal, one of the plurality of resin-pre-coated electric wires in which the terminals are crimped to both ends of the coated conductor wire using a pair of jigs. Is fixed to one of the jigs, the other terminal is fixed to the other jig, and the one jig and the other jig are sequentially transported by the same transport device, and at least the A resin member is sequentially applied to each of the terminals of the plurality of electric wires before resin coating by a jet dispenser so as to cover the conductor exposed from the covering portion, and the electric wire before resin coating to which the resin member is applied is applied. To the resin curing section, and simultaneously irradiating the resin members of the plurality of resin-coated front electric wires located within the ultraviolet irradiation range of the resin curing section with ultraviolet rays, thereby sequentially curing the respective resin members. And a method of manufacturing an electric wire with a terminal.
Further, a second aspect of the present invention is to provide a coating conductor including a coating portion and a conductor wire exposed from a tip of the coating portion, a conductor crimping portion for crimping the conducting wire, and a coating crimping portion for crimping the coating portion. And a terminal provided with a resin-coated front electric wire having a terminal, and a pair of jigs is used, and one of the terminals of the plurality of resin-coated front electric wires, in which the terminals are crimped to both ends of the coated conductor wire, Fixed to a tool, the other terminal is fixed to the other jig, and the one jig and the other jig are respectively conveyed by different conveying devices, and at least the portion exposed from the covering portion A resin member is sequentially applied to each of the terminals of the plurality of pre-resin-coated wires so as to cover the conducting wire by a jet dispenser, and the pre-resin-coated wires coated with the resin member are conveyed to a resin curing section. Then, by simultaneously irradiating the resin members of the plurality of resin-coated front electric wires located within the ultraviolet irradiation range of the resin curing portion with the ultraviolet rays, each of the resin members is sequentially cured, with a terminal. It is a method of manufacturing an electric wire.
A third aspect of the invention is to provide a coated wire including a coating portion and a conductive wire exposed from a tip of the coating portion, a wire crimping portion for crimping the conductive wire, and a coated crimping portion for crimping the coating portion. A terminal provided with, and using a resin-coated pre-electric wire having a plurality of the resin-coated pre-electric wire, the terminals are crimped to both ends of the coated conductor wire to a jig, The terminals and the other of the terminals are alternately arranged on the jig, and at least so as to cover the conductive wire exposed from the coating portion, with respect to each of the terminals of the plurality of resin-coated wires, sequentially. A resin member is applied with a jet dispenser, the resin-coated pre-coated electric wire coated with the resin member is conveyed to a resin curing section, and the plurality of resin-coated pre-electrical wires located within the ultraviolet irradiation range of the resin cured section The method for producing an electric wire with a terminal is characterized in that the resin members are sequentially cured by irradiating the resin members with ultraviolet rays at the same time.

After heating at least one of the resin member and the terminal, the resin member may be applied by the jet dispenser so as to cover the conductive wire.

It is preferable that the resin member before application is heated and the viscosity of the resin member after heating is 30 to 500 mPa·s.

A plurality of jigs are sequentially moved below the resin curing portion, and ultraviolet rays are simultaneously applied to the resin-pre-coated wires fixed to the respective jigs located in the ultraviolet irradiation range of the resin curing portion. May be irradiated .

By repeating the movement and stop of the jig at the pitch at which the electric wire before resin coating in the jig is arranged, the electric wire before resin coating coated with the resin member is arranged at the pitch below the resin cured portion. The time from application of the resin member to the irradiation of the ultraviolet rays may be made substantially constant for each of the electric wires before resin coating in the jig by sequentially moving and irradiating the ultraviolet rays.

According to any one of the first to third inventions , since the resin member is applied by the jet dispenser, the resin member can be applied in a short time. In addition, since the resin member is cured while being transported, it is easy to adjust the time from the application of the resin member to the curing, and also the curing time. Also, by simultaneously irradiating multiple pre-resin-coated wires with ultraviolet light, it is possible to secure sufficient time to cure the resin member even if the application time of the resin member is shortened. Can be shortened.

Further, by heating either the resin member or the terminal, the viscosity of the resin member can be reduced. For this reason, application is facilitated and the resin member can penetrate into the back surface of the conducting wire. In particular, when the viscosity of the resin member after heating is 30 to 500 mPa·s, the resin member can be efficiently permeated and the resin member can be prevented from flowing down from the surface of the conductive wire.

Also, by fixing a plurality of pre-resin-coated wires to a jig, and successively applying and curing a resin member to each pre-resin-coated wire fixed to the jig, each step can be performed as in the conventional method. It is not necessary to work by attaching one resin-coated electric wire to each. For this reason, the electric wire with a terminal can be manufactured efficiently.

At this time, by using a pair of jigs and arranging one terminal and the other terminal for each jig, a jig corresponding to the terminal shape can be used.

Also, by using a pair of jigs, one terminal and the other terminal are arranged for each jig, and each jig is transported by another transport device to apply the resin member individually. By carrying out curing, the electric wire length may be such that the distance between the conveying devices can reach, and it is possible to cope with the case where the electric wire length is short.

Further, by arranging one terminal and the other terminal of the plurality of resin-uncoated electric wires in one jig alternately, it is possible to cope with the case where the electric wire length is short.

In addition, by moving a plurality of jigs in order below the resin curing section and irradiating ultraviolet rays simultaneously to the resin-coated pre-fixed wires fixed to the respective jigs, it is possible to sufficiently cure the resin member. Therefore, the total manufacturing time can be shortened.

In addition, the jig is moved and stopped repeatedly at the pitch where the resin-pre-coated wires are arranged, and the pre-resin-coated wires are sequentially moved below the resin curing part at that pitch to irradiate ultraviolet rays. Thus, the time from application of the resin member to irradiation of ultraviolet rays can be made substantially constant. Therefore, the permeation time of the resin member becomes constant, and the anticorrosion performance can be stabilized.

A fourth aspect of the present invention includes: a coating conductor including a coating portion and a conductor wire exposed from a tip of the coating portion; a conductor crimping portion crimping the conductor wire; and a coating crimping portion crimping the coating portion. A terminal, and an apparatus for manufacturing an electric wire with a terminal, comprising: a plurality of transfer devices for transferring the coated wire and the terminal , in each of the transfer devices, at least the conductive wire exposed from the coating portion. comprises a jet dispenser for applying the tree butter member so as to cover, by each of the transport device, performs coating of the resin member, further comprising a resin curing unit for curing the resin member is irradiated with ultraviolet light It is a device for producing a characteristic electric wire with a terminal.
Further, a heating unit for heating the resin member may be further provided, and the jet dispenser may apply the heated resin member so as to cover at least the conductive wire exposed from the covering unit.

According to the fourth aspect of the present invention, it is possible to efficiently manufacture an electric wire with a terminal.

ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method etc. of the electric wire with a terminal which can shorten the takt time of manufacture can be provided.

The perspective view which shows the electric wire 10 with a terminal. The conceptual diagram which shows the electric wire manufacturing apparatus 20 with a terminal. The conceptual diagram which shows the operation mechanism of the jet dispenser 29. The conceptual diagram which shows the other operation mechanism of the jet dispenser 29. The figure which shows the state which fixed the electric wire 10 with a terminal to the jig|tool 37. (A)-(c) is a figure which shows the state which moves the electric wire 10 with a terminal fixed to the jig|tool 37 with respect to the conveying apparatus 21. FIG. The figure which shows the conveyance state of the jig 37. FIGS. 9A to 9C are diagrams showing a transportation state of the jig 37. FIGS. FIGS. 9A to 9C are diagrams showing a transportation state of the jig 37. FIGS.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an electric wire 10 with a terminal. The figure is a perspective view of the resin member 17. The electric wire 10 with a terminal is composed of the terminal 1, the coated conductor 11, and the like. The terminal 1 is an open barrel type, and a copper alloy such as copper or brass is used. A covered conductor 11 is connected to the terminal 1. The coated conductor wire 11 includes a conductor wire 13 which is a copper wire or an aluminum wire, and a coating portion 15 which covers the conductor wire 13. That is, the covered conductor wire 11 includes the covered portion 15 and the conductor wire 13 exposed from the tip thereof.

The terminal 1 includes a terminal body 3 and a crimp portion 5. The terminal body 3 is formed by forming a plate-shaped material having a predetermined shape into a tubular body having a rectangular cross section. The terminal body 3 has, inside, an elastic contact piece formed by folding a plate-shaped material into a rectangular cylinder. The terminal body 3 is connected by inserting a male terminal or the like from the front end portion. In the following description, the terminal body 3 is an example of a female terminal that allows insertion of an insertion tab (not shown) such as a male terminal, but in the present invention, the detailed shape of the terminal body 3 is described. Is not particularly limited. For example, an insertion tab for a male terminal may be provided instead of the female terminal body 3.

The crimp portion 5 is a portion to be crimped with the coated conductor wire and has a barrel shape in which a cross-sectional shape perpendicular to the longitudinal direction of the terminal 1 is a substantially U shape. The crimping portion 5 of the terminal 1 includes a conductor crimping portion 7 that crimps a conductor wire exposed from the covering portion to the tip side of the covering conductor wire, and a covering crimping portion 9 that crimps the covering portion 15 of the covering conductor wire 11.

Serrations (not shown) are provided in the width direction (direction perpendicular to the longitudinal direction) on a part of the inner surface of the conductor crimping portion 7. By forming serrations in this way, when the conductor wire is pressure-bonded, the oxide film on the surface of the conductor wire is easily destroyed, and the contact area with the conductor wire can be increased.

The coating portion 15 is peeled off from the tip of the coated conductive wire 11, and the conductive wire 13 inside is exposed. The covering portion of the covered conductor wire 11 is crimped by the covering crimp portion 9 of the terminal 1. Further, the conductor 13 exposed by peeling off the covering portion 15 is crimped by the conductor crimping portion 7. The conductor 13 and the terminal 1 are electrically connected in the conductor crimping portion 7. The end surface of the covering portion 15 is located between the covering crimp portion 9 and the conductor crimp portion 7.

In the present invention, at least the conductive wire 13 exposed from the covering portion 15 is covered with the resin member 17. That is, the conductor wire crimping portion 7 and the covering crimp portion 9 are covered with the resin member 17, and at least the conductor wire 13 is not exposed to the outside by the resin member 17. The resin member 17 is, for example, an ultraviolet curable resin such as silicone acrylate, urethane acrylate, or acrylic acrylate. The details of the resin member 17 will be described later.

Next, a method of manufacturing the electric wire 10 with a terminal will be described. FIG. 2 is a schematic diagram showing the electric wire manufacturing apparatus 20 with terminals. The apparatus 20 for manufacturing an electric wire with a terminal includes a conveying device 21, a crimping section 23, an inspection section 25, a heating section 27, a jet dispenser 29, a heating section 31, a resin curing section 33, an inspection section 35 and the like. It should be noted that the electric wire manufacturing apparatus with terminal 20 may not have all the illustrated configurations, or may include other configurations.

The carrier device 21 includes the electric wire to be manufactured (hereinafter, in order to distinguish from the manufactured electric wire 10 with a terminal, the crimped coated conductor wire 11 and the terminal 1 in a state before the resin member 17 is applied and cured). , Which may be referred to as an electric wire before resin coating) is conveyed to each step. In the illustrated example, the wire before resin coating to be manufactured is sequentially moved with respect to the crimping section 23, the inspection section 25, the heating section 27, the jet dispenser 29, the resin curing section 33, and the inspection section 35 (arrow A in the figure). .. Although the details will be described later, the electric wire before resin coating is fixed to the jig and moves on the transport device 21 together with the jig.

The crimping portion 23 is a portion for crimping the terminal 1 and the coated conductor 11 with a mold. The crimping portion 23 may be arranged separately from the electric wire with terminal manufacturing apparatus 20. That is, the pressure bonding may be performed in a step different from that of the transport device 21.

The inspection unit 25 is a unit that inspects the pressure-bonded state. The inspection unit 25, for example, captures an image in the vicinity of the pressure-bonded portion and compares it with a preset condition to inspect the pressure-bonded state. As described above, when the crimping portion 23 is provided on another line, the crimping state can be inspected on another line. In this case, the inspection unit 25 may inspect the installation state of the pre-resin-coated wire installed on the transport device 21 by image analysis. In addition, the inspection unit 25 may determine the type of the installed terminal.

The heating unit 27 is a portion that heats the terminal 1. The heating unit 27 is, for example, a warm air blower (industrial dryer). The heating temperature is, for example, about 50° C., although it depends on the characteristics of the resin member 17. By heating the terminal 1 by the heating unit 27, it is possible to suppress a decrease in fluidity of the resin member 17 after applying the resin member 17 described below. If the terminal 1 does not need to be heated, the heating unit 27 is unnecessary.

The jet dispenser 29 is a portion that applies the resin member 17 in the vicinity of the crimping portion 5 so as to cover at least the conductive wire 13 exposed from the covering portion 15. The jet dispenser 29 is capable of high-speed operation, not a conventional mechanically controlled dispenser such as a needle (including a dispenser in which a resin member is merely pushed out by air pressure to form a droplet at the tip of a nozzle). Is. 3A to 3C are conceptual diagrams showing the operating mechanism of the jet dispenser 29. As shown in FIG. 3A, the jet dispenser 29 mainly includes a nozzle 39, a rod 41, a spring 43 and the like.

The resin member 17 is filled in the nozzle 39. As shown in FIG. 2, the jet dispenser 29 is provided with a heating unit 31 to heat the resin member 17 as needed. By heating the resin member 17, the viscosity of the resin member 17 can be reduced. The heating temperature is, for example, about 80° C., though it depends on the characteristics of the resin member 17.

In the present embodiment, the viscosity of the resin member 17 after heating according to JIS Z 8803 is preferably 30 to 500 mPa·s (more preferably, the viscosity of the resin member after heating is 30 to 300 mPa·s). When the viscosity is less than 30 mPa·s, when the resin member 17 is applied, the resin member 17 may flow out from the vicinity of the pressure-bonded portion and may not be properly covered. When the viscosity exceeds 500 mPa·s, when the resin member 17 is applied, the resin member 17 may not sufficiently penetrate into the inside of the pressure-bonded portion, and a gap may be formed inside. The viscosity of the resin member 17 at 20° C. is, for example, 30 to 2000 mPa·s.

The rod 41 of the jet dispenser 29 can reciprocate with respect to the nozzle 39. The rod 41 is pressed downward (toward the nozzle) by the spring 43, and in opposition to this, the rod 41 is pushed upward (to the side opposite to the nozzle 39) by an air circuit (not shown). There is.

When the air pressure is shut off from this state, the rod 41 is moved downward by the spring 43 (arrow B in the figure) as shown in FIG. 3B, and the tip of the rod 41 projects into the nozzle 39. Along with this, the resin member 17 in the nozzle 39 discharges downward (arrow C in the figure). That is, the resin member 17 is sprayed and applied in the vicinity of the crimping portion of the pre-resin-coated electric wire arranged below the jet dispenser 29.

The diameter of the nozzle 39 is not particularly limited, but is preferably 2 mm or less. That is, it is desirable that the droplet diameter of the resin member 17 to be ejected is 2 mm or less. In addition, a water repellent process for reducing wettability with the resin member 17 may be applied to a portion of the nozzle 39 near the tip end portion which is in contact with the resin member 17.

Next, when the air pressure is applied again, as shown in FIG. 3C, the rod 41 is pushed back against the pressing of the spring 43 (arrow D in the figure). At this time, the resin member 17 is supplied into the nozzle 39 (arrow E in the figure). By repeating the above at high speed while moving the position of the nozzle 39, the resin member 17 is intermittently sprayed a plurality of times, and the resin member 17 can be uniformly applied to a predetermined position (range). For example, the jet dispenser 29 can discharge the resin member 17 at a maximum of several hundred times/second.

The high-speed vibration source of the jet dispenser 29 is not limited to the one that drives the rod 41 with the spring 43 and the air as shown in FIGS. 3(a) to 3(c). For example, as shown in FIG. 4, the piezo element 45 may be arranged above the nozzle 39 via the diaphragm 47, and a voltage may be applied to the piezo element 45 at a predetermined frequency to vibrate the diaphragm 47. The resin member 17 is discharged by the vibration of the diaphragm 47. Also in this case, the supply (arrow F in the figure) and the discharge of the resin member 17 can be repeated at high speed. As described above, the jet dispenser 29 may have any mechanism as long as it has a high-speed vibration source capable of discharging several hundred times/second.

The resin curing portion 33 is a portion that irradiates the resin member 17 with ultraviolet rays while conveying the resin-uncoated electric wire coated with the resin member 17. Since the resin member 17 is an ultraviolet curable resin, the resin member 17 can be cured by applying the resin member 17 and then irradiating it with ultraviolet rays in the same line.

Here, when the resin curing portion 33 irradiates ultraviolet rays from above, a shadow of the conducting wire 13 is produced. That is, the ultraviolet rays may not be sufficiently irradiated to the resin member 17 below the conducting wire 13. However, the ultraviolet light emitted from above passes through the resin member 17 and is reflected on the surface of the conductive wire 13 and the inner surface of the terminal 1. For this reason, the ultraviolet light also wraps around the shaded portion of the conductive wire 13, and the resin member 17 can be cured.

Therefore, if the resin member 17 is a resin that allows ultraviolet rays to easily pass therethrough, it is possible to irradiate the ultraviolet rays deeper. Therefore, in the present invention, it is desirable that the spectral transmittance at a wavelength of 365 nm when the thickness of the resin member 17 is 0.2 mm is 60% or more.

Here, the spectral transmittance of 60% or more at a thickness of 0.2 mm means that a resin having a thickness of 0.2 mm is formed from the resin that constitutes the resin member 17, and light (e.g., light) incident from one side of the sheet is formed. The irradiation amount of 3000 mJ/cm) is the transmittance of light transmitted to the other. Specifically, ultraviolet light is irradiated, and the light intensity I ₀ is measured at a predetermined distance by a spectrophotometer. Next, the sheet is placed between the light source and the spectrophotometer, and the light intensity I is measured in the same manner. At this time, I/I ₀ is the spectral transmittance at a thickness of 0.2 mm.

The logarithm of the transmittance is proportional to the sheet thickness. Specifically, if the sheet thickness is t and the transmittance is T, then t=−Dp×log ₁₀ T. Here, Dp is the curing depth, and is expressed as the slope of the graph of the decrease (logarithm) of the transmittance with the increase of the sheet thickness. Therefore, when the evaluation is performed using a sheet having a thickness other than 0.2 mm, the range of the transmittance depending on the thickness of the sheet may be calculated by the above formula.

The transmittance can be adjusted by the amount of the photoinitiator added. Here, if the transmittance is too high, it becomes difficult to visually recognize the resin member 17, and it becomes difficult to visually confirm the quality. Therefore, the transmittance is preferably 90% or less.

Even if the transmittance of the resin member 17 is improved, if the gap between the lead wire 13 and the terminal 1 becomes too narrow, the number of reflections increases, so that the ultraviolet light is attenuated due to the reflection, so that the ultraviolet rays are shadowed on the lead wire 13. It will be difficult to get around to. Therefore, it is desirable to appropriately set the gap between the conductor 13 and the terminal 1.

For example, the gap between the conductor wire 13 and the terminal 1 is formed by the distance between the end surface of the covering portion 15 and the conductor wire crimping portion 7, and the distance between the conductor wire 13 and the terminal 1 at the end surface of the covering portion 15. In the present embodiment, the distance between the end face of the covering portion 15 and the conductor wire crimping portion 7 in the longitudinal cross section is preferably 0.1 mm or more, and the distance between the conductor wire 13 and the terminal 1 on the end face of the covering portion 15 is preferably. , 0.1 mm or more is desirable. By doing so, light easily enters the gap, and the resin member 17 in the shaded portion of the conducting wire 13 can be cured. It should be noted that the distance between the conductor 13 and the terminal 1 on the end face of the covering portion 15 can be generally rephrased as the thickness of the covering portion 15.

Further, the Shore hardness of the resin member 17 after curing is preferably in the range of A1 to A90. If the shore hardness of the resin member 17 is too small, the resin member 17 is easily scratched, and if the shore hardness of the resin member 17 is too large, a large heat shrinkage stress is applied, resulting in a shorter life in a thermal shock environment. In addition, the mass reduction rate after the cured resin member 17 is immersed in a sodium hydroxide solution having a pH of 10 for 24 hours is preferably 10% or less.

The inspection unit 35 inspects the shape and film thickness of the cured resin member 17 by image analysis, for example. In this way, the electric wire before resin coating is moved by the transfer device 21 and the above-described steps are sequentially performed, whereby the electric wire with terminal 10 is manufactured.

The pre-resin-coated electric wire to be moved by the carrier device 21 may be a single unit, but it is desirable to feed a plurality of pre-resin-coated electric wires at the same time. FIG. 5 is a diagram showing a state in which a plurality of pre-resin-coated electric wires 10 a (the terminal 1 and the coated conducting wire 11 before application of the resin member) are fixed to the jig 37. As shown in the figure, the terminal 1 of the electric wire 10a before resin coating is gripped and fixed by a chuck of the jig 37 or the like. By sequentially moving the plurality of pre-resin-coated electric wires 10a fixed by the jig 37 to each step by the transfer device 21, the electric wire with terminal 10 can be efficiently manufactured.

As a method of transporting the jig 37 to which the pre-resin-coated electric wire 10a is fixed, a plurality of jigs 37 (37a, 37b) are used as shown in FIG. One terminal 1 of the electric wire 10a may be fixed to one jig 37a, the other terminal 1 may be fixed to the other jig 37b, and the jigs 37a and 37b may be sequentially transported by the same transport device 21. ..

Thus, by using the jig 37a for fixing only one terminal 1 of the pre-resin coated electric wire 10a and the jig 37b for fixing only the other terminal 1, a jig suitable for each terminal shape is used. can do.

Further, as shown in FIG. 6B, one terminal 1 and the other terminal 1 of the plurality of pre-resin-coated electric wires 10 a are alternately arranged on the jig 37, and the jig 37 is sequentially transported by the transport device 21. You may.

In this way, by fixing the terminals 1 at both ends of the pre-resin-coated electric wire 10a to the same jig 37, it is possible to cope with the case where the length of the covered conductor wire 11 is short.

Further, as shown in FIG. 6C, using a pair of jigs 37 (37a, 37b), one terminal 1 of the plurality of pre-resin-coated electric wires 10a is fixed to one jig 37a, and the other terminal is fixed. One may be fixed to the other jig 37b, and the jigs 37a and 37b may be conveyed by different conveying devices 21, respectively. That is, a pair of terminals-equipped electric wire manufacturing apparatuses 20 may be used to apply the resin member 17 or the like to the terminals 1 at both ends by the respective conveying apparatuses 21.

In this way, by moving the jigs 37a and 37b by the different transporting device 21, the gap between the transporting devices 21 can be narrowed, and it is possible to cope with the case where the length of the coated conductor wire 11 is short.

In addition, you may move the conveyance apparatus 21 so that the several electric wire 10a before resin coating may be located in the ultraviolet irradiation range of the resin hardening part 33. By doing so, it is possible to simultaneously irradiate a plurality of pre-resin-coated wires 10a with ultraviolet rays. That is, the pre-resin-coated electric wire 10a coated with the resin member 17 is conveyed to the resin curing section 33, and the resin members 17 of the plurality of pre-resin-coated electric wires 10a are simultaneously irradiated with ultraviolet rays, whereby the respective resin members 17 are sequentially irradiated. Can be cured.

For example, as shown in FIG. 7, under the resin curing portion 33, a plurality of jigs 37 are sequentially moved to simultaneously irradiate the pre-resin-coated electric wire 10a fixed to each jig 37 with ultraviolet rays. May be. In this way, by moving the transfer device 21 so that the plurality of jigs 37 are positioned within the ultraviolet irradiation range (H in the figure) of the resin curing unit 33, the resin coating speed is sufficiently long. The ultraviolet irradiation time can be secured. Therefore, the resin member 17 can be reliably cured. Further, since the resin member 17 is applied and cured continuously, the total manufacturing efficiency can be improved.

Further, the transfer device 21 may transfer the jig continuously, and may repeatedly stop and move the jig. Further, the transport device 21 may be moved for each of the plurality of pre-resin coated electric wires 10a on each jig to cure the resin. After the resin application to 10a is completed, the transport device 21 may be moved for each jig arrangement pitch.

For example, as shown in FIG. 8(a), the resin member 17 is applied to the front resin-coated electric wire 10a on the front side of the jig 37 (I in the figure), and then, as shown in FIG. 8(b), When the transport device 21 is moved by the arrangement pitch of the pre-resin coated electric wire 10a on the jig 37 (A in the figure), a part of the pre-resin coated electric wire 10a on the preceding jig 37 is exposed to the ultraviolet irradiation area (in the figure). Enter H).

Further, as shown in FIG. 8C, the carrier device 21 is moved by the arrangement pitch of the pre-resin coating electric wires 10a each time the resin member 17 is applied, so that the pre-resin coating electric wires 10a are irradiated with ultraviolet rays one by one. Can be put in the area.

In this manner, the jig 37 is repeatedly moved and stopped at the pitch at which the pre-resin coated electric wires 10a of the jig 37 are arranged, and the pre-resin coated electric wires 10a coated with the resin member 17 are applied to the resin cured portion at the pitch. 33 by sequentially moving the resin-pre-coated electric wires 10a to ultraviolet rays in order to irradiate the respective resin-pre-coated electric wires 10a in the jig 37 with time from application of the resin member 17 to ultraviolet irradiation. Can be made substantially constant. Therefore, the penetration time of the resin member 17 can be made constant, and the anticorrosion effect can be stabilized.

As shown in FIG. 9( a ), the resin member 17 is applied to the front resin-coated electric wire 10 a on the jig 37 (I in the figure), and then, as shown in FIG. 9( b ). When the transport device 21 is moved by the arrangement pitch of the pre-resin coated electric wire 10a on the jig 37 (A in the figure), a part of the pre-resin coated electric wire 10a on the same jig 37 is exposed to an ultraviolet irradiation area (H in the figure). ) You may enter.

Even in this case, as shown in FIG. 9C, the carrier device 21 is moved by the arrangement pitch of the pre-resin-coated electric wires 10a each time the resin member 17 is applied, so that the pre-resin-coated electric wires 10a are moved one by one. It can be placed in the UV irradiation area. Therefore, the penetration time of the resin member 17 can be made constant, and the anticorrosion effect can be stabilized.

As described above, according to the present embodiment, the resin member 17 covers the connection portion between the terminal 1 and the covered conductive wire 11, so that the anticorrosion effect can be efficiently obtained. At this time, since the resin member 17 is applied by the jet dispenser 29, the resin member 17 can be applied in an extremely short time. In addition, since the resin member 17 is cured on the same line after the resin member 17 is applied, it is easy to control the time from application of the resin member 17 to ultraviolet irradiation.

Moreover, since the viscosity can be lowered by heating the resin member 17, the resin member 17 can be efficiently applied by the jet dispenser 29. Further, since the resin member 17 has a low viscosity, the resin member 17 easily penetrates to the back surface side of the conducting wire 13, and the vicinity of the conducting wire 13 that is reliably exposed can be covered with the resin member 17.

Furthermore, by heating the terminal 1 in advance, it is possible to prevent the heat from being taken away when the applied resin member 17 comes into contact with the terminal 1 to increase the viscosity. The resin member 17 can be reliably applied by setting the viscosity of the resin member 17 after heating within a predetermined range.

Further, by fixing the plurality of pre-resin-coated electric wires 10a to the jig 37 and moving them by the transport device 21, the plurality of pre-resin-coated electric wires 10a can be processed in each step. Therefore, the electric wire with a terminal 10 can be efficiently manufactured.

Further, if the ultraviolet transmittance of the resin member 17 is higher than a predetermined level, the ultraviolet light easily wraps around to the back side of the conducting wire 13, and the resin member 17 is cured only by ultraviolet irradiation without being used in combination with heat curing or moisture curing. Can be made.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not affected by the above-described embodiments. It is obvious to those skilled in the art that various alterations or modifications can be conceived within the scope of the technical idea described in the claims, and those are naturally within the technical scope of the present invention. It is understood that it belongs.

1... Terminal 3 ... Terminal body 5 ... Crimping part 7 ... Conductor crimping part 9 ... Coating crimping part 10 ... Electric wire with terminal 10a ... Electric wire 11 before resin coating ... Coated conductive wire 13... Conductive wire 15... Covered portion 17... Resin member 20.... Electric wire manufacturing device with terminal 21... Transporting device 23... Crimping portion 25... Inspection portion 27.... Heating unit 29... Jet dispenser 31... Heating unit 33... Resin curing unit 35... Inspection unit 37, 37a, 37b... Jig 39... Nozzle 41... Rod 43... ... Spring 45 ... Piezo element 47 ... Diaphragm

Claims (9)

A coated conductor including a coated portion and a conductive wire exposed from a tip of the coated portion,
Using a wire before resin coating having a conductor wire crimping portion for crimping the conducting wire and a terminal including a coating crimping portion for crimping the coating portion,
Using a pair of jigs,
One of the terminals of the plurality of resin-coated front electric wires, in which the terminals are crimped to both ends of the coated conductor, is fixed to the one jig, and the other terminal is fixed to the other jig. The jig and the other jig are sequentially transported by the same transport device,
At least, so as to cover the conductive wire exposed from the coating portion, to each of the terminals of the plurality of resin-coated front electric wire, sequentially apply a resin member with a jet dispenser,
Carrying the resin-coated pre-coated electric wire coated with the resin member to a resin curing section, and simultaneously irradiating the resin members of the plurality of resin-coated pre-electric wires located within the ultraviolet irradiation range of the resin cured section with ultraviolet rays. 2. A method of manufacturing an electric wire with a terminal, wherein each of the resin members is sequentially cured. A coated conductor including a coated portion and a conductive wire exposed from a tip of the coated portion,
Using a wire before resin coating having a conductor wire crimping portion for crimping the conducting wire and a terminal including a coating crimping portion for crimping the coating portion,
Using a pair of jigs,
One of the terminals of the plurality of resin-coated front electric wires, in which the terminals are crimped to both ends of the coated conductor, is fixed to the one jig, and the other terminal is fixed to the other jig. The jig and the other jig are respectively conveyed by different conveying devices,
At least, so as to cover the conductive wire exposed from the coating portion, to each of the terminals of the plurality of resin-coated front electric wire, sequentially apply a resin member with a jet dispenser,
Carrying the resin-coated pre-coated electric wire coated with the resin member to a resin curing section, and simultaneously irradiating the resin members of the plurality of resin-coated pre-electric wires located within the ultraviolet irradiation range of the resin cured section with ultraviolet rays. 2. A method of manufacturing an electric wire with a terminal, wherein each of the resin members is sequentially cured. A coated conductor including a coated portion and a conductive wire exposed from a tip of the coated portion,
Using a wire before resin coating having a conductor wire crimping portion for crimping the conducting wire and a terminal including a coating crimping portion for crimping the coating portion,
Fixing the plurality of resin-coated pre-electric wires in which the terminals are crimped to both ends of the coated conductor to a jig,
One of the terminals and the other terminal of the plurality of resin-coated front electric wires are alternately arranged on the jig,
At least, so as to cover the conductive wire exposed from the coating portion, to each of the terminals of the plurality of resin-coated front electric wire, sequentially apply a resin member with a jet dispenser,
Carrying the resin-coated pre-coated electric wire coated with the resin member to a resin curing section, and simultaneously irradiating the resin members of the plurality of resin-coated pre-electric wires located within the ultraviolet irradiation range of the resin curing section with ultraviolet rays. 2. A method of manufacturing an electric wire with a terminal, wherein each of the resin members is sequentially cured. The terminal according to any one of claims 1 to 3, wherein after heating at least one of the resin member and the terminal, the resin member is applied by the jet dispenser so as to cover the conductor. Electric wire manufacturing method. The method for producing an electric wire with a terminal according to claim 4, wherein the resin member before application is heated, and the viscosity of the resin member after heating is 30 to 500 mPa·s. A plurality of jigs are sequentially moved below the resin curing portion, and ultraviolet rays are simultaneously applied to the resin-pre-coated wires fixed to the respective jigs located in the ultraviolet irradiation range of the resin curing portion. The method for manufacturing an electric wire with a terminal according to claim 1, wherein the electric wire is irradiated with. By repeating the movement and stop of the jig at the pitch at which the electric wire before resin coating in the jig is arranged, the electric wire before resin coating coated with the resin member is arranged at the pitch below the resin cured portion. 7. By sequentially irradiating with ultraviolet rays by sequentially moving to each of the electric wires before resin coating in the jig, the time from application of the resin member to ultraviolet irradiation is made substantially constant. The method for manufacturing an electric wire with a terminal according to any one of claims 1 to 6. A coated conductor including a coated portion and a conductive wire exposed from a tip of the coated portion,
A manufacturing apparatus of an electric wire with a terminal, comprising: a wire crimping portion for crimping the conductive wire; and a terminal including a coating crimping portion for crimping the covering portion,
A plurality of transfer devices for transferring the coated wire and the terminal,
In each of the transfer devices, at least, comprising a jet dispenser for applying a resin member so as to cover the conductive wire exposed from the coating portion, by each of the transfer device, to apply the resin member,
The apparatus for manufacturing an electric wire with a terminal, further comprising a resin curing section that irradiates ultraviolet rays to cure the resin member. Further comprising a heating unit for heating the resin member,
The said jet dispenser applies the said resin member heated so that at least the said conductor exposed from the said coating|coated part may be applied, The manufacturing apparatus of the electric wire with a terminal of Claim 8 characterized by the above-mentioned.

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