JP7233971B2 - Electric wire manufacturing method with terminal and electric wire manufacturing apparatus with terminal - Google Patents

Description

TECHNICAL FIELD The present invention relates to a terminal-equipped electric wire manufacturing method and a terminal-equipped electric wire manufacturing apparatus.

As a conventional electric wire manufacturing method with a terminal, for example, in Patent Document 1, a core wire crimping piece protruding from a part of the bottom of a terminal is crimped to an end portion of the core wire of the electric wire that is exposed from the insulating coating. Also disclosed is a method for manufacturing an electric wire with a terminal in which the exposed portion of the core wire is subjected to anticorrosion treatment.

JP 2018-106864 A

By the way, the method for manufacturing a terminal-equipped electric wire described in Patent Literature 1 has room for further improvement, for example, in terms of ensuring more reliable water stopping performance.

The present invention has been made in view of the above circumstances, and provides a terminal-attached wire manufacturing method and a terminal-equipped wire manufacturing apparatus capable of manufacturing a terminal-attached wire ensuring proper water stopping performance. for the purpose.

In order to achieve the above object, a method for manufacturing a terminal-equipped electric wire according to the present invention provides an electric wire in which a conductive conductor portion is covered with an insulating insulating coating portion, and the conductor portion is exposed from the end of the insulating coating portion. Before crimping a crimp terminal including a conductor crimp portion crimped against and a coated crimp portion crimped against the insulation coating portion to the electric wire, in the crimp terminal, the crimp terminal is attached to the electric wire a pre-crimping application step of applying a first corrosion-resistant material to a portion forming a gap space surrounded by the crimped terminal, the conductor portion, and the end of the insulating coating portion in a crimped state; After the pre-application step, the conductor crimping portion is crimped to the conductor portion and the covering crimping portion is crimped to the insulating coating portion, and the conductor crimping portion and the first covering crimping portion are crimped. a crimping permeation step of exuding the anticorrosion to the outside from between the conductor crimping portion and the covering crimping portion through the conductor portion, wherein the conductor crimping portion is located at the end portion on the covering crimping portion side. and a convex portion formed so as to protrude toward the side where the conductor portion is located and extend along a direction crossing the extending direction of the conductor portion.

In order to achieve the above object, a method for manufacturing a terminal-equipped electric wire according to the present invention provides an electric wire in which a conductive conductor portion is covered with an insulating insulating coating portion, and the conductor portion is exposed from the end of the insulating coating portion. Before crimping a crimp terminal including a conductor crimp portion crimped against and a coated crimp portion crimped against the insulation coating portion to the electric wire, in the crimp terminal, the crimp terminal is attached to the electric wire a pre-crimping application step of applying a first corrosion-resistant material to a portion forming a gap space surrounded by the crimped terminal, the conductor portion, and the end of the insulating coating portion in a crimped state; After the pre-application step, the conductor crimping portion is crimped to the conductor portion and the covering crimping portion is crimped to the insulating coating portion, and the conductor crimping portion and the first covering crimping portion are crimped. a crimping permeation step of exuding the anti-corrosion material from between the conductor crimping portion and the coated crimping portion to the outside through the conductor portion; and the conductor portion exposed from the crimp terminal after the crimping permeation step. , and a post-crimping coating step of coating the conductor crimping portion and the insulating coating portion with a second anti-corrosion layer.

Further, in the method for manufacturing an electric wire with a terminal, in the pre-crimping application step, in a state in which the crimp terminal is crimped to the electric wire, the end portion of the covering crimping portion opposite to the conductor crimping portion is positioned. The first anti-corrosion material may be applied so that the first anti-corrosion material spreads over the surface.

Further, in the method for manufacturing an electric wire with a terminal, the first anticorrosion agent and the second anticorrosion agent are photocurable resins that are cured by exposure to light, and the first anticorrosion agent and the second anticorrosion agent It may include a curing step of irradiating the anti-corrosion material with light to cure it.

In order to achieve the above object, an apparatus for manufacturing a terminal-equipped electric wire according to the present invention provides an electric wire in which a conductive conductor portion is covered with an insulating insulating coating portion, and the conductor portion is exposed from an end of the insulating coating portion. Before crimping a crimp terminal including a conductor crimp portion crimped against and a coated crimp portion crimped against the insulation coating portion to the electric wire, in the crimp terminal, the crimp terminal is attached to the electric wire a first applicator for applying a first anti-corrosion material to a portion forming a gap space surrounded by the crimped terminal, the conductor portion, and the end of the insulating coating portion in a crimped state; The crimping portion is crimped to the conductor portion and the covering crimping portion is crimped to the insulating coating portion, and the first anticorrosion-proofing portion is crimped through the conductor portion as the conductor crimping portion and the covering crimping portion are crimped. to control the crimping device that exudes to the outside from between the conductor crimping portion and the covering crimping portion, the first coating device, and the crimping device, and the first anticorrosive material is applied by the first coating device a control device capable of crimping the crimp terminal to the electric wire by the crimping device after coating, wherein the conductor crimping portion has the conductor portion positioned at the end on the covering crimping portion side. It is characterized by having a convex portion which is formed so as to protrude to the side to extend along a direction intersecting with the extending direction of the conductor portion .

In the method for manufacturing an electric wire with a terminal and the apparatus for manufacturing an electric wire with a terminal according to the present invention, before the crimp terminal is crimped onto the electric wire, a clearance space surrounded by the crimp terminal, the conductor portion, and the end of the insulating coating portion is formed. Apply anti-corrosion to the area where it will be exposed. Thereafter, in the method for manufacturing an electric wire with a terminal and the apparatus for manufacturing an electric wire with a terminal, the conductor crimping portion and the coating crimping portion are crimped to the conductor portion and the insulating coating portion, and the first anti-corrosion material is applied to the conductor portion through the crimping along with the crimping. It is caused to seep out from between the conductor crimping portion and the covered crimping portion. As a result, in the method for manufacturing an electric wire with a terminal and the apparatus for manufacturing an electric wire with a terminal, in addition to the gap space surrounded by the crimp terminal, the conductor portion, and the end of the insulating coating portion, the conductor crimping portion and the covering crimping The first anti-corrosion part can reliably seal off the part exposed to the outside from between the part. As a result, the method for manufacturing an electric wire with a terminal and the apparatus for manufacturing an electric wire with a terminal produce an effect that it is possible to manufacture an electric wire with a terminal that ensures proper water stopping performance.

FIG. 1 is a perspective view showing a schematic configuration of an electric wire with a terminal according to an embodiment. FIG. 2 is an exploded perspective view showing a state of the electric wire with a terminal according to the embodiment before the crimp terminal is crimped. FIG. 3 is a flow chart showing a method for manufacturing an electric wire with a terminal according to the embodiment. FIG. 4 is a schematic block diagram showing a schematic configuration of a terminal-equipped electric wire manufacturing apparatus that executes the terminal-equipped electric wire manufacturing method according to the embodiment. FIG. 5 is a perspective view showing an example of a coating process before crimping in the method for manufacturing an electric wire with a terminal according to the embodiment. FIG. 6 is a schematic cross-sectional view showing a state after the pressure-bonding permeation step of the method for manufacturing an electric wire with a terminal according to the embodiment. FIG. 7 is a perspective view showing an example of an application step after crimping in the method for manufacturing an electric wire with a terminal according to the embodiment. FIG. 8 is a perspective view showing an example of a curing step of the method for manufacturing an electric wire with a terminal according to the embodiment. FIG. 9 is a schematic cross-sectional view showing a state after the curing step of the method for manufacturing an electric wire with a terminal according to the embodiment. FIG. 10 is a flow chart showing a method for manufacturing an electric wire with terminals according to a modification. FIG. 11 is a schematic block diagram showing a schematic configuration of a terminal-equipped electric wire manufacturing apparatus that executes a terminal-equipped electric wire manufacturing method according to a modification.

EMBODIMENT OF THE INVENTION Below, embodiment which concerns on this invention is described in detail based on drawing. In addition, this invention is not limited by this embodiment. In addition, components in the following embodiments include components that can be easily replaced by those skilled in the art, or components that are substantially the same.

[Embodiment]
A method for manufacturing an electric wire with a terminal according to the present embodiment manufactures the electric wire with a terminal 100 shown in FIGS. 1 and 2 . Below, first, the basic structure of the electric wire 100 with a terminal shown in FIG.1, FIG.2 is demonstrated, and after that, the electric wire manufacturing method with a terminal is demonstrated in detail.

The electric wire 100 with a terminal shown in FIGS. 1 and 2 is applied, for example, to a wire harness or the like used in a vehicle or the like. Here, the wire harness is, for example, a bundle of a plurality of electric wires W used for power supply and signal communication for connection between devices mounted on a vehicle. are connected to each device. The electric wire 100 with a terminal of the present embodiment includes an electric wire W, a crimp terminal 1 crimped to the end of the electric wire W, and a corrosion-resistant material (a first corrosion-resistant material 11a and a second corrosion-resistant material 12a described later (see FIG. 9, etc.). ) and is provided with a corrosion prevention water stop part 10 for stopping water in each part.

In the following description, among the first direction, the second direction, and the third direction that intersect each other, the first direction will be referred to as the "axial direction X" and the second direction will be referred to as the "width direction Y". The third direction is called "height direction Z". Here, the axial direction X, the width direction Y, and the height direction Z are substantially orthogonal to each other. The axial direction X typically corresponds to the extending direction of the wire W on which the crimp terminal 1 is provided, and corresponds to the direction in which the electrical connection portion 2 and the wire crimp portion 4 of the crimp terminal 1 are aligned. The width direction Y and the height direction Z correspond to cross directions crossing the axial direction X. As shown in FIG. In addition, each direction used in the following description indicates the direction when each part is assembled with each other, unless otherwise specified.

The electric wire W includes, for example, a linear conductor portion W1 having conductivity, and an insulating insulation coating portion W2 covering the outside of the conductor portion W1. The electric wire W is an insulated electric wire in which a conductor portion W1 is covered with an insulating coating portion W2. The conductor portion W1 of the present embodiment is a core wire in which a plurality of strands of a conductive metal such as copper, copper alloy, aluminum, aluminum alloy, etc. are bundled. may The insulating coating portion W2 is a wire coating that covers the outer peripheral side of the conductor portion W1. The insulating coating portion W2 is formed by, for example, extruding an insulating resin material (PP, PVC, crosslinked PE, etc., which is appropriately selected in consideration of abrasion resistance, chemical resistance, heat resistance, etc.). It is formed. In the electric wire W, at least one end of the conductor portion W1 is stripped of the insulation coating portion W2, and one end of the conductor portion W1 is exposed from the terminal W2a of the insulation coating portion W2. The crimp terminal 1 is crimped to the end of the conductor W1. Here, the electric wire W is formed so as to extend with substantially the same diameter in the linear extension direction, and the cross-sectional shape of the conductor portion W1 (the cross-sectional shape in the direction intersecting with the extension direction) is substantially circular. The cross-sectional shape of the insulating coating portion W2 is a substantially circular ring shape, and the cross-sectional shape as a whole is substantially circular.

A crimp terminal 1 includes an electrical connection portion 2 , a connecting portion 3 , and a wire crimp portion 4 . The electrical connecting portion 2, the connecting portion 3, and the wire crimping portion 4 are integrally made of a conductive metal such as copper, copper alloy, aluminum, aluminum alloy, etc., and constitute a terminal fitting 5. The crimp terminal 1 is made by pressing and bending a single sheet metal punched into shapes corresponding to the electrical connection portion 2, the connecting portion 3, the electric wire crimping portion 4, etc., so that each portion is three-dimensionally integrated. It is formed. In the crimp terminal 1, from one side to the other side along the axial direction X, the electrical connection portion 2, the connection portion 3, and the wire crimp portion 4 are arranged in this order and connected to each other.

The electrical connection portion 2 is a portion electrically connected to the conductive member. The conductive member of this embodiment is, for example, a mating terminal (not shown). That is, here, the electrical connection portion 2 of the present embodiment is configured as a terminal connection portion that is electrically connected to the mating terminal. The electrical connection portion 2 may have a male terminal shape or a female terminal shape. The electrical connection portion 2 of the present embodiment is illustrated as a female terminal shape, and is electrically connected to a mating terminal having a male terminal shape. The conductive member may not be the mating terminal, and may be various conductive members such as an earth member. The electrical connection portion 2 may not constitute a terminal connection portion electrically connected to the mating terminal, and may be, for example, a so-called round terminal (LA terminal) shape that is fastened to a grounding member or the like. good too.

The connecting portion 3 is a portion interposed between the electrical connection portion 2 and the wire crimping portion 4 to connect the electrical connection portion 2 and the wire crimping portion 4 . In the crimp terminal 1, the electrical connection portion 2 and the wire crimp portion 4 are electrically connected via the connecting portion 3, and the electrical connection portion 2 and the conductor portion W1 of the wire W are electrically connected via the wire crimp portion 4. connected and conducted.

The wire crimp portion 4 is a portion that electrically connects the crimp terminal 1 and the end of the wire W. As shown in FIG. The wire crimping portion 4 is crimped to the end of the wire W by crimping. The wire crimping portion 4 includes a base portion 41 and two pairs of barrel piece portions 42 , 43 , 44 , 45 . The wire crimping portion 4 is crimped and crimped to the wire W by a base portion 41 and two pairs of barrel piece portions 42 , 43 , 44 , 45 . The wire crimping portion 4 includes a conductor crimping portion 46 , an intermediate portion 47 , and a covering crimping portion 48 by a base portion 41 and two pairs of barrel piece portions 42 , 43 , 44 , and 45 . In other words, the wire crimping portion 4 includes a base portion 41, a conductor crimping portion 46, an intermediate portion 47, and a covering crimping portion 48, which are configured by two pairs of barrel piece portions 42, 43, 44, and 45. consists of The conductor crimping portion 46 is composed of a portion of the base portion 41 and the pair of barrel piece portions 42 and 43 . The intermediate portion 47 is configured by part of the base portion 41 . The covering crimp portion 48 is composed of a portion of the base portion 41 and a pair of barrel pieces 44 and 45 . In the wire crimping portion 4 , the conductor crimping portion 46 , the intermediate portion 47 , and the covering crimping portion 48 are arranged in this order from the electrical connection portion 2 side toward the opposite side along the axial direction X and connected to each other. The wire crimping portion 4 constitutes a so-called separate barrel crimping portion in which a pair of barrel pieces 42 and 43 and a pair of barrel pieces 44 and 45 are separated through an intermediate portion 47 .

The base portion 41 extends along the axial direction X and serves as a bottom wall of the wire crimping portion 4 formed in a U shape. The end portion of the electric wire W is placed on the base portion 41 during crimping. The base portion 41 has one side in the axial direction X to which the electrical connection portion 2 is connected via the connection portion 3 . Note that the base 41 is connected to a carrier on the other side in the axial direction X before crimping, and is cut from the carrier during crimping, for example.

The pair of barrel piece portions 42 and 43 constitute a conductor crimping portion 46 together with a portion of the base portion 41 . The conductor crimping portion 46 is a portion that is provided on one end side of the wire crimping portion 4 in the axial direction X, here, on the side of the electrical connection portion 2 and crimped to the conductor portion W1 of the wire W by crimping. Furthermore, the conductor crimping portion 46 is a portion that is electrically connected to the conductor portion W1 by crimping and crimping the conductor portion W1. The pair of barrel piece portions 42 and 43 are formed in the conductor crimping portion 46 so as to extend in a band shape from the base portion 41 to both sides in the width direction Y, and wrap the conductor portion W1 of the electric wire W between the base portion 41 and crimp. It is the part that is crimped. The barrel pieces 42 and 43 are the side walls of the U-shaped wire crimping portion 4 before crimping. The barrel piece portion 42 extends from the base portion 41 to one side in the width direction Y intersecting the axial direction X. As shown in FIG. The barrel piece portion 43 extends from the base portion 41 to the other side in the width direction Y. As shown in FIG. Before the barrel pieces 42 and 43 are crimped and crimped onto the conductor portion W1 of the electric wire W (see FIG. 2), the base portion 41 is subjected to a bending process, and together with the base portion 41, approximately It is shaped like a U. The pair of barrel pieces 42 and 43 of the present embodiment are wound around the electric wire W, crimped, and crimped so that they do not overlap each other (they do not overlap), and extend from the root to the tip on the side of the base 41 . length is set. The pair of barrel pieces 42 and 43 may have the same length from the root to the tip on the base 41 side, or one length may be longer than the other length. Here, the pair of barrel pieces 42 and 43 are illustrated as being crimped by a so-called B-crimp, but the present invention is not limited to this. In the B crimp, each of the barrel pieces 42 and 43 is bent toward the base portion 41 side and crimped so that the tip portion is pressed toward the wire W and crimped. The conductor crimping portion 46 wraps the outside of the conductor portion W1 of the electric wire W positioned between the pair of barrel piece portions 42 and 43 by the base portion 41 and the pair of barrel piece portions 42 and 43, and is attached to the conductor portion W1. are swaged and crimped. In addition, the conductor crimping portion 46 is not limited to the above-described form, and for example, the pair of barrel pieces 42 and 43 are wound around the electric wire W, crimped, and overlapped with each other in a crimped state. ) may be configured as follows.

The conductor crimping portion 46 of the present embodiment has serrations 46a (see also FIG. 6, etc.) at portions of the base portion 41 and the pair of barrel pieces 42 and 43 that come into contact with the conductor portion W1. The serration 46a is a portion that forms an edge for increasing the contact area with the conductor portion W1, improving the contact stability, and improving the adhesion strength. The serrations 46a are formed on the surfaces of the base 41 and the pair of barrel pieces 42 and 43 on which the conductor W1 is located (that is, the inner mounting surface on which the conductor W1 is mounted). The side (outer side) opposite to the recessed conductor portion W1 is formed flat. Here, the serrations 46a are formed as substantially circular shallow grooves by pressing or the like, and a plurality of the serrations 46a are arranged in a grid pattern.

In addition, the conductor crimping portion 46 has a pair of convex portions 46b and 46c (see also FIG. 6 etc.) separately from the serration 46a at the portions of the base portion 41 and the pair of barrel pieces 42 and 43 that come into contact with the conductor portion W1. have The convex portions 46b and 46c are formed on the surfaces of the base portion 41 and the pair of barrel pieces 42 and 43 on which the conductor portion W1 is located (that is, the inner mounting surfaces on which the conductor portion W1 is mounted). It protrudes convexly toward the conductor W1 side, and the surface on the opposite side (outside) of the conductor W1 is recessed. The convex portions 46b and 46c are formed to extend linearly along the width direction Y over the base portion 41 and the pair of barrel piece portions 42 and 43, respectively. The convex portion 46b and the convex portion 46c are formed substantially parallel to each other with the plurality of serrations 46a interposed therebetween in the axial direction X. As shown in FIG. Here, the convex portion 46b is formed at the end portion of the conductor crimping portion 46 opposite to the coating crimping portion 48 side in the axial direction X, that is, at the end portion on the electrical connection portion 2 side. On the other hand, the convex portion 46 c is formed at the end portion of the conductor crimping portion 46 on the covering crimping portion 48 side in the axial direction X. As shown in FIG.

The pair of barrel piece portions 44 and 45 are portions that form a covering crimping portion 48 together with a portion of the base portion 41 . The covering crimping portion 48 is provided on the other end side of the wire crimping portion 4 in the axial direction X, here, on the side opposite to the electrical connection portion 2 side, and is crimped and crimped to the insulating coating portion W2 of the electric wire W. part. Here, in the wire crimping portion 4, an intermediate portion 47 is interposed between the covering crimping portion 48 and the conductor crimping portion 46 in the axial direction X. As shown in FIG. The intermediate portion 47 is a portion interposed between the conductor crimping portion 46 and the covering crimping portion 48 and connecting the conductor crimping portion 46 and the covering crimping portion 48 . A pair of barrel piece portions 44 and 45 are formed in the covering crimping portion 48 so as to extend in a band shape from the base portion 41 to both sides in the width direction Y, and wrap the insulating covering portion W2 of the electric wire W between the base portion 41 and apply pressure. It is the part that is tightened and crimped. The barrel pieces 44 and 45 are the side walls of the U-shaped wire crimping portion 4 before crimping. The barrel piece portion 44 extends from the base portion 41 to one side in the width direction Y intersecting the axial direction X. As shown in FIG. The barrel piece portion 45 extends from the base portion 41 to the other side in the width direction Y. As shown in FIG. Before the barrel pieces 44 and 45 are crimped and crimped onto the insulation coating W2 of the electric wire W (see FIG. 2), the base 41 is bent and combined with the base 41. It is molded in a substantially U shape. The barrel pieces 44 and 45 are separated from the barrel pieces 42 and 43 with an intermediate portion 47 interposed therebetween. The pair of barrel pieces 44 and 45 of this embodiment are wound around the electric wire W, crimped, and crimped so that they do not overlap each other (not overlap), and extend from the root to the tip on the side of the base 41 . The length is set up to and is shifted in the axial direction X. The pair of barrel pieces 44 and 45 may have the same length from the root to the tip on the base 41 side, or one length may be longer than the other length. The covering crimping portion 48 wraps the outer side of the insulation covering portion W2 of the electric wire W positioned between the pair of barrel pieces 44 and 45 with the base portion 41 and the pair of barrel pieces 44 and 45 to form the insulation covering portion W2. swaged and crimped against. Note that the covering crimping portion 48 may be configured such that the pair of barrel pieces 44 and 45 are wound around the wire W, crimped, and crimped so that they overlap each other.

The anti-corrosion and water-stopping part 10 is formed by hardening anti-corrosion materials (first anti-corrosion material 11a and second anti-corrosion material 12a (see FIG. 9, etc.)), and water-stops each part of the electric wire with terminal 100. . Here, the anti-corrosion/water-stopping portion 10 includes a first anti-corrosion/water-stopping portion 11, a second anti-corrosion/water-stopping portion 12, and a third anti-corrosion/water-stopping portion 13, as shown in FIG. . The first anti-corrosion and water-stopping part 11 is formed by applying a first anti-corrosion material 11a, which is a first anti-corrosion material, to a predetermined area inside the crimp terminal 1 and hardening it. It is the part that stops water. The second anti-corrosion and water-stopping part 12 is formed by applying a second anti-corrosion material 12a, which is a second anti-corrosion material, to a predetermined area on the outside of the crimp terminal 1 and hardening it. It is the part that stops water. The third anti-corrosion/water-stopping portion 13 is a portion formed by applying and curing the first anti-corrosion material 11a like the first anti-corrosion/water-stopping portion 11, but here, the conductor of the coated crimping portion 48 It is a portion that is provided at an end portion 48a (see FIG. 9, etc.) on the side opposite to the crimping portion 46 to stop water. Both the first anti-corrosion layer 11a and the second anti-corrosion layer 12a of the present embodiment are resins that change their degree of curing and harden when exposed to light. A mold resin can be used. That is, here, the anti-corrosion and water-stopping portion 10 is formed by curing the first anti-corrosion material 11a and the second anti-corrosion material 12a, which are photocurable resins. As the UV curable resin, for example, a urethane acrylate resin can be used, but the resin is not limited to this. Typically, the same UV curable resin can be used for the first anti-corrosion layer 11a and the second anti-corrosion layer 12a. , for example, the viscosity and the like may be different from each other. The first anti-corrosion material 11a is typically applied to a predetermined portion in a pre-crimping application step (step ST2), which will be described later. On the other hand, the second anti-corrosion material 12a is typically applied to a predetermined portion in the post-compression application step (step ST5), which will be described later.

Next, a method for manufacturing the electric wire with terminal 100 configured as described above (a method for manufacturing an electric wire with terminal) will be described with reference to FIGS. In the following explanation, while explaining based on the flowchart of FIG. 3, other drawings will be referred to as appropriate. The method for manufacturing the electric wire with terminal 100 described below may be performed manually by an operator using various devices, equipment, jigs, etc., or may be performed automatically by various manufacturing devices. good too.

The method for manufacturing the electric wire with terminal 100 of the present embodiment will be described as being automatically performed by a manufacturing apparatus M as a manufacturing apparatus for electric wire with terminal shown in FIG. 4 . The manufacturing device M includes a stripping device M1, a terminal supply device M2, a first coating device M3, a crimping device M4, a terminal cutting device M5, a second coating device M6, a curing device M7, and a control device M8. and The terminal supply device M2, the crimping device M4, and the terminal cutting device M5 are sometimes called an applicator in this technical field because they are integrally configured, for example. Also, the peeling device M1, the first coating device M3, the second coating device M6, the curing device M7, the control device M8, etc. may be incorporated into this applicator.

The stripping device M1 is an automatic stripping device that strips off the insulating coating W2 at one end of the electric wire W and exposes one end of the conductor W1 from the end W2a of the insulating coating W2 (see FIG. 6, etc.). be. This peeling device M1 performs a peeling process (step ST1).

The terminal supply device M2 pulls out the leading crimp terminal 1 on the outer peripheral side of the terminal chain body wound in a reel shape and sequentially supplies it to a device on the downstream side (here, the first coating device M3 etc.). It is a device. Here, the chained terminal body is a state in which a plurality of crimped terminals 1 before crimping processing, in which the shape of each part is formed by a pressing process or a bending process, are connected via a carrier or the like, and wound into a reel shape. is provided in the terminal supply device M2.

The first coating device M3 is a device that pressurizes a fixed amount of the first anticorrosion agent 11a toward a nozzle M3a (see FIG. 5, etc.) such as a dispenser by reciprocating motion of a piston or the like. And the 1st coating device M3 injects and coats the droplet of the 1st anticorrosive 11a pressure-fed to the nozzle M3a from the said nozzle M3a. The first coating device M3 can relatively move the nozzle M3a along the axial direction X and the width direction Y with respect to the coating target site 11b (see FIG. 5 etc.) described later. The first anticorrosion 11a can be applied to the application target portion 11b. This first applicator M3 performs a pre-compression application process (step ST2).

The crimping device M4 is a device that crimps the conductor crimping portion 46 to the conductor portion W1 and crimps the coating crimping portion 48 to the insulating coating portion W2 using a mold called an anvil as a lower mold and a crimper as an upper mold. . This pressure-bonding device M4 performs a pressure-bonding permeation step (step ST3).

The terminal cutting device M5 is a device for cutting off the crimped terminal 1 from the chain of terminals. This terminal cutting device M5 performs a cutting step (step ST4). The terminal cutting device M5 may separate the crimp terminal 1 from the chain of terminals (cutting step) at the same time as the crimping of the crimping terminal 1 by the crimping device M4 (crimping penetrating step) proceeds.

The second applicator M6 is a device that pressure-feeds a fixed amount of the second anticorrosive 12a toward a nozzle M6a (see FIG. 7, etc.) such as a dispenser by reciprocating motion of a piston or the like, like the first applicator M3. Then, the second coating device M6 ejects and coats the droplets of the second anti-corrosion 12a pressure-fed to the nozzle M6a from the nozzle M6a. The second coating device M6 can relatively move the nozzle M6a along the axial direction X and the width direction Y with respect to the coating target site 12b (see FIG. 7 etc.) described later. The second anti-corrosion 12a can be applied to the application target portion 12b. This second coating device M6 performs the coating step after pressure bonding (step ST5). In addition, the 1st coating device M3 and the 2nd coating device M6 may be combined.

The curing device M7 is a device that irradiates light from a light source M7a (see FIG. 8, etc.) to the first anticorrosion 11a and the second anticorrosion 12a to cure them. A UV-LED (Light Emitting Diode) can be used as the light source M7a. The UV-LED used as the light source M7a is a light-emitting element capable of radiating ultraviolet rays for curing the first anti-corrosion layer 11a and the second anti-corrosion layer 12a, which are UV curable resins. This curing device M7 performs a curing step (step ST6).

The control device M8 is a part that executes various arithmetic processing and controls each part of the manufacturing device M in an integrated manner. The control device M8 includes a central processing unit such as a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and an electronic circuit mainly composed of a well-known microcomputer including an interface. be. The control device M8 controls the stripping device M1, the terminal supply device M2, the first coating device M3, the crimping device M4, the terminal cutting device M5, the second coating device M6, and the curing device M7 to perform the stripping process (step ST1). , a pre-pressing coating step (step ST2), a pressing permeation step (step ST3), a cutting step (step ST4), a post-pressing coating step (step ST5), a curing step (step ST6), and the like. Here, the control device M8 applies the first anti-corrosion layer 11a by the first applicator M3, crimps the crimp terminal 1 onto the wire W by the crimping device M4, and applies the second anti-corrosion layer 12a by the second applicator M6. Then, the first anti-corrosion 11a and the second anti-corrosion 12a are collectively cured by the curing device M7. Each step will be described in detail below.

First, as a stripping process, the control device M8 controls the stripping device M1 to strip off the insulating coating W2 from one end of the electric wire W, and removes one end of the conductor W1 from the insulating coating W2. A peeling process for exposing from W2a (see FIG. 6, etc.) is executed (step ST1). Then, the control device M8 controls the terminal supply device M2, pulls out the leading crimp terminal 1 on the outer peripheral side of the terminal chain body, and sequentially supplies it to a device on the downstream side (here, the first coating device M3, etc.). While executing the process, the subsequent steps are executed.

Next, after the stripping step (step ST1), the control device M8 controls the first applicator M3 as a pre-crimping coating step to perform the coating process before crimping the crimp terminal 1 onto the electric wire W, as shown in FIG. Then, a pre-compression application process is executed to apply the first anti-corrosion material 11a to a predetermined portion (step ST2). In the pre-crimping coating process (pre-crimping coating process), the control device M8 of the present embodiment ejects droplets of the first anti-corrosion material 11a from the nozzle M3a to form the gap space 6 shown in FIG. 6 in the crimp terminal 1. The first anti-corrosion layer 11a is applied to the portion to be coated.

Here, as shown in FIG. 6, the gap space portion 6 is a space portion surrounded by the crimp terminal 1, the conductor portion W1, and the terminal W2a of the insulating coating portion W2 in a state where the crimp terminal 1 is crimped to the electric wire W. is. When the crimp terminal 1 is crimped, the electric wire W has the terminal W2a of the insulation coating portion W2 located between the conductor crimping portion 46 and the covering crimping portion 48, that is, in the intermediate portion 47. As shown in FIG. Inside the crimp terminal 1, the clearance space portion 6 is formed between the inner surface of the base portion 41 of the crimp terminal 1 and the outer surface of the conductor portion W1 due to a step corresponding to the thickness of the terminal W2a of the insulating coating portion W2. It is the gap formed between them. The clearance space portion 6 is formed as a substantially arc-shaped clearance along a step that occurs according to the thickness of the terminal W2a of the insulating coating portion W2.

In the pre-crimping coating step (step ST2), the first coating device M3 applies the first protective coating to the portion of the electric wire W after the crimping of the crimping terminal 1, which forms the clearance space 6, before crimping the crimping terminal 1. The food material 11a is applied. That is, the first coating device M3 sets the portion to be coated (first coating target portion) 11b of the electric wire W before crimping of the crimp terminal 1, which will form the gap space portion 6 after crimping. The first anti-corrosion layer 11a is applied to the portion 11b. In other words, the application target portion 11b is a portion on which the above-described first anti-corrosion/water-stopping portion 11 (see FIG. 9) is provided. Here, the application target portion 11b is, for example, a portion of the crimp terminal 1 which is located on the inner surface of the base portion 41 at the connection portion between the intermediate portion 47 and the covered crimp portion 48, as shown in FIG. The first coating device M3, for example, positions the nozzle M3a so as to face the application target portion 11b on the inner surface of the base portion 41 of the crimp terminal 1 in the height direction Z, and applies the nozzle M3a to the application target portion 11b. to inject and apply droplets of the first anticorrosion 11a.

At this time, in the pre-crimping application step (step ST2), the control device M8 of the present embodiment controls the first coating device M3 to perform the first prevention along with the crimping of the conductor crimping portion 46 and the coating crimping portion 48. A sufficient amount of the first anti-corrosion material 11a is applied to cause the food material 11a to seep out from between the conductor crimping portion 46 and the coating crimping portion 48 through the conductor portion W1. The amount of the first anti-corrosion material 11a to be applied is, for example, an amount that exudes to the outside from between the conductor crimping portion 46 and the coating crimping portion 48 as the crimp terminal 1 is crimped onto the electric wire W, for example, by verification tests in advance. is adjusted so that

In addition, in the application step before crimping (step ST2), the control device M8 of the present embodiment controls the first application device M3 as shown in FIG. 6 to apply the first anticorrosion 11a as follows. good too. That is, the control device M8 applies the first anti-corrosion layer 11a so that the first anti-corrosion layer 11a spreads over the portion where the end portion 48a of the crimping portion 48 is positioned while the crimp terminal 1 is crimped onto the electric wire W. You may do so. Here, the end portion 48a of the covering crimping portion 48 is the end portion of the covering crimping portion 48 opposite to the conductor crimping portion 46 side. That is, the first applicator M3 sets the portion where the end portion 48a is positioned after crimping of the electric wire W before crimping of the crimp terminal 1 as the application target portion (third application target portion) 13b, and the application target portion 13b after crimping. The first anti-corrosion layer 11a is applied so that the first anti-corrosion layer 11a spreads. In other words, the application target portion 13b is a portion on which the above-described third anti-corrosion/water-stopping portion 13 (see FIG. 9) is provided. For example, the first coating device M3 applies a sufficient amount of the first anti-corrosion material 11a to the application target portion 11b illustrated in FIG. As a result, the first coating device M3 can extend and spread the first anti-corrosion material 11a to the coating target portion 13b after pressure bonding. The first coating device M3 can also apply the first anti-corrosion material 11a directly to the application target area 13b so that the first anti-corrosion material 11a spreads over the application area 13b after crimping.

Next, after the application step before crimping (step ST2), the control device M8 controls the crimping device M4 to crimp the conductor crimping portion 46 of the crimping terminal 1 to the conductor portion W1 and cover the crimping portion 48 as a crimping permeation step. is pressed against the insulating coating W2 (step ST3). In the crimping penetration step (step ST3), the crimping device M4 crimps the crimping terminal 1 onto the electric wire W while deforming the wire crimping portion 4 of the crimping terminal 1 using an anvil and a crimper. More specifically, the crimping device M4 is configured such that the base 41 of the wire crimping part 4 is placed on the mounting surface of the anvil, and the skin is placed between the two pairs of barrel pieces 42, 43, 44, 45. The stripped electric wire W is placed. In the crimping device M4, the conductor portion W1 is positioned between the barrel pieces 42 and 43 of the conductor crimping portion 46, the insulating coating portion W2 is positioned between the barrel pieces 44 and 45 of the covering crimping portion 48, and the terminal W2a is a conductor. A wire W is placed on the base portion 41 so as to be positioned between the crimping portion 46 and the cover crimping portion 48 . In the crimping device M4, the crimper arranged at a position facing the anvil in the height direction Z is relatively close to the anvil side along the height direction Z, and the two pairs of barrel pieces 42 are pressed together. , 43, 44, and 45 are pressed toward the base 41 and gradually bent inward and deformed. As a result, the crimping device M4 wraps the conductor portion W1 between the base portion 41 and the pair of barrel pieces 42, 43 in the conductor crimping portion 46 and crimps the pair of barrel pieces 42, 43 to the conductor portion W1. crimp to. Similarly, the crimping device M4 wraps and crimps the insulating coating W2 between the base 41 and the pair of barrel pieces 44 and 45 in the covering crimping portion 48, and the pair of barrel pieces 44 and 45 is covered with the insulation. It is crimped to the portion W2. In the crimp terminal 1, as shown in FIG. 6, the conductor crimping portion 46 is crimped to the conductor portion W1 and the covering crimping portion 48 is crimped to the insulating covering portion W2, so that the conductor crimping portion 46 and the conductor portion W1 are directly connected. contacts and adheres to conduct electricity.

At this time, the crimp terminal 1 has been coated with the first anti-corrosion layer 11a on the application target portion 11b of the crimp terminal 1 in the pre-crimp application step (step ST2) prior to the crimp permeation step (step ST3). Therefore, the crimp terminal 1 is crimped to the electric wire W, and the gap space 6 is filled with the first anti-corrosion material 11a.

On top of that, the crimp terminal 1 has the conductor crimping portion 46 and the covering crimping portion 48 crimped so that the first anti-corrosion material 11a is interposed between the conductor crimping portion 46 and the conductor crimping portion 48 through the wires of the conductor portion W1. It will be in a state where it seeps out from between it and the covering crimping portion 48 . In the conductor portion W1, the first anticorrosion material 11a seeps out from the intermediate exposed portion W1b located between the conductor crimping portion 46 and the terminal W2a of the insulation coating portion W2. That is, in the crimping and penetrating step (step ST3), the crimping device M4, as shown in FIG. It is caused to seep out from between the conductor crimping portion 46 and the covered crimping portion 48 through the conductor crimping portion 46 . At this time, since the crimp terminal 1 has the convex portion 46c at the end of the conductor crimping portion 46 on the side of the covering crimping portion 48, the first anti-corrosion portion 11a is moved by the crimping by the convex portion 46c. It is possible to suppress the extrusion to the adhesion portion side between 46 and the conductor portion W1.

In addition, here, the crimp terminal 1 is coated and crimped after the first anti-corrosion 11a applied to the application target portion 11b of the crimp terminal 1 in the pre-crimp application step (step ST2) preceding the crimp penetration step (step ST3). It will be in the state where it spreads to the application|coating object site|part 13b by the side of the edge part 48a of the part 48. As shown in FIG.

Next, the control device M8 controls the terminal cutting device M5 as a cutting step after the crimping permeation step (step ST3) or in parallel with the crimping permeation step (step ST3), and the terminal cutting device M5 is crimped to the electric wire W. A cutting process for cutting the crimp terminal 1 from the chain of terminals is executed (step ST4).

Next, after the cutting step (step ST4), as shown in FIG. 7, the control device M8 controls the second coating device M6 as a post-crimping coating step to crimp the crimp terminal 1 onto the electric wire W. A post-compression application process is executed to apply the second anti-corrosion material 12a to a predetermined portion (step ST5). In the post-press-bonding coating process (post-press-bonding coating process), the control device M8 of the present embodiment ejects droplets of the second anti-corrosion material 12a from the nozzle M6a to form a coating target site (second coating target site) shown in FIG. A second anti-corrosion layer 12a is applied to 12b. In other words, the application target portion 12b is a portion on which the above-described second anti-corrosion/water-stop portion 12 (see FIG. 9) is provided. As shown in FIG. 7, the application target portion 12b includes the conductor portion W1 exposed from the crimp terminal 1, the conductor crimping portion 46, and the insulating coating portion W2, and the conductor portion W1, the conductor crimping portion 46, and a portion that covers the insulating coating portion W2. Here, the application target portion 12b also includes the portion of the first anti-corrosion material 11a that leaks out from between the conductor crimping portion 46 and the coating crimping portion 48 through the strands of the conductor portion W1. . That is, here, the application target portion 12b includes the tip W1a of the conductor portion W1 exposed from the crimp terminal 1, the conductor crimp portion 46, and the first first It is a part covering the anti-corrosion 11a and the covering crimping part 48 to cover them.

For example, as shown in FIG. 7, the second coating device M6 positions the nozzle M6a on the side opposite to the side where the base 41 is located in the height direction Z, and sprays the coating target site 12b from the nozzle M6a. A droplet of the second anticorrosion 12a is ejected and applied. The second anti-corrosion material 12a applied to the application target portion 12b forms a coating on the application target portion 12b, that is, the tip W1a of the conductor portion W1 exposed from the crimp terminal 1, the conductor crimp portion 46, and the conductor crimp portion. The first anti-corrosion material 11a leaking out from between 46 and the covering pressure-bonding portion 48 and the covering pressure-bonding portion 48 are integrally covered. More specifically, the second anti-corrosion layer 12a includes the tip W1a of the conductor portion W1, a portion of the conductor crimping portion 46, the first anti-corrosion portion 11a exuding from the intermediate exposed portion W1b of the conductor portion W1, and the insulating coating portion W2. The end W2a, a portion of the intermediate portion 47, and a portion of the covering crimping portion 48 are integrally covered. A tip W1a of the conductor portion W1 is a portion exposed from the conductor crimping portion 46 toward the electrical connection portion 2 side. The intermediate exposed portion W1b of the conductor portion W1 is the portion exposed between the conductor crimping portion 46 and the terminal W2a of the insulating coating portion W2 as described above. Moreover, it is preferable that the second anti-corrosion layer 12a is applied so as to fill at least the grooves formed by the ends of the barrel pieces 42 and 43 facing each other. Furthermore, the second anti-corrosion layer 12a also permeates the gaps between the wires inside the conductor portion W1.

Next, the controller M8 controls the curing device M7 as a curing step after the post-crimping application step (step ST5), as shown in FIG. is irradiated with light for curing (step ST6), and the manufacturing method of the electric wire with terminal 100 is completed. In the curing step (step ST6), the curing device M7 of the present embodiment collectively irradiates the first anti-corrosion layer 11a and the second anti-corrosion layer 12a after the application step after crimping (step ST5). Harden. For example, as shown in FIG. 8, the curing device M7 positions a light source M7a on the side opposite to the side where the base portion 41 is positioned in the height direction Z, and emits the first anticorrosive material 11a and the second anticorrosive material from the light source M7a. The food material 12a is irradiated with ultraviolet rays. The ultraviolet rays emitted from the light source M7a are irregularly reflected on the surface of the wire of the conductor portion W1, and the first anticorrosion 11a filled in the gap space 6 and the first anticorrosion penetrated inside the conductor portion W1. 11a, reach up to the second anticorrosion 12a and harden them. The first anti-corrosion material 11a and the second anti-corrosion material 12a are cured by being irradiated with ultraviolet rays from the light source M7a and retain their shapes.

As shown in FIG. 9, the first anti-corrosion material 11a is applied to the application target portion 11b before the crimp terminal 1 is crimped, and is filled in the clearance space 6 after crimping. The inside of the gap 6 inside the terminal 1, the intermediate exposed portion W1b of the conductor portion W1, the portion between the conductor crimping portion 46 and the cover crimping portion 48, etc. are hardened to form the first anticorrosion and watertight portion 11. FIG. As a result, in the electric wire with terminal 100, the first anti-corrosion and water-stopping portion 11 is formed in the gap space portion 6 inside the crimp terminal 1 and in the conductor portion W1 from between the conductor crimping portion 46 and the coating crimping portion 48 to the outside. It is possible to reliably stop water at the exposed part. In addition, the first anti-corrosion material 11a is irradiated with ultraviolet rays in a state where it spreads to the application target portion 13b after crimping the crimp terminal 1, so that the first anti-corrosion material 11a is cured on the side of the end portion 48a of the covering crimping portion 48 to form the third anti-corrosion/waterproof portion. form 13. As a result, the third anti-corrosion and water-stopping portion 13 can reliably stop water on the side of the end portion 48 a of the covering crimping portion 48 in the electric wire with terminal 100 . On the other hand, the second anti-corrosion element 12a includes the conductor portion W1 exposed from the crimp terminal 1, the conductor crimp portion 46, the first anti-corrosion portion 11a exposed between the conductor crimp portion 46 and the covering crimp portion 48, and the insulation By irradiating ultraviolet rays in a state in which these are integrally covered over the covering portion W2, the outside of the crimp terminal 1 is cured to form the second anti-corrosion water-proof portion 12. As shown in FIG. As a result, in the electric wire 100 with a terminal, the second anti-corrosion and water-stopping portion 12 includes the tip W1a of the conductor portion W1, a portion of the conductor crimping portion 46, and the first anti-corrosion portion 11a (first The anti-corrosion water stop portion 11), the end W2a of the insulating coating portion W2, a part of the intermediate portion 47, and a part of the cover crimping portion 48 can be covered and integrated to reliably stop water. In other words, the second anti-corrosion and water cutoff portion 12 can cut off the exposed portion of the conductor portion W1 from the external space and reliably cut off water.

In the manufacturing method and the manufacturing apparatus M of the electric wire 100 with a terminal described above, before crimping the crimp terminal 1 to the electric wire W, the application target portion 11b that will form the gap space 6 in the crimp terminal 1 The first anti-corrosion layer 11a is applied. The gap space portion 6 is a space portion surrounded by the crimp terminal 1, the conductor portion W1, and the terminal W2a of the insulating coating portion W2. Thereafter, in this manufacturing method and manufacturing apparatus M, the conductor crimping portion 46 and the coating crimping portion 48 are crimped to the conductor portion W1 and the insulating coating portion W2, and along with the crimping, the first corrosion-resistant material 11a is moved through the conductor portion W1. to the outside from between the conductor crimping portion 46 and the covering crimping portion 48 . As a result, in this manufacturing method and manufacturing apparatus M, in addition to the gap space 6 surrounded by the crimp terminal 1, the conductor portion W1, and the end W2a of the insulating coating portion W2, the conductor crimping portion is formed in the conductor portion W1 of the electric wire W. The portion exposed to the outside from between 46 and covering pressure-bonding portion 48 can be reliably water-stopped by first anti-corrosion layer 11a. In other words, in the manufacturing method and the manufacturing apparatus M, the gap space 6 formed after the crimp terminal 1 is crimped is formed by the first anti-corrosion layer 11a applied to the crimp terminal 1 before crimping the crimp terminal 1 to the electric wire W. In addition, the first anti-corrosion and water blocking portion 11 can be reliably formed in the portion exposed to the outside from between the conductor crimping portion 46 and the coating crimping portion 48 in the conductor portion W1 to stop water. As a result, in the manufacturing method and the manufacturing apparatus M, after the crimp terminal 1 is crimped, it is difficult to apply the first anti-corrosion layer 11a to the conductor crimping portion 46 and the conductor crimping portion 46 in the gap space portion 6 inside the crimp terminal 1 and the conductor portion W1. The first anti-corrosion/water-stopping portion 11 can be reliably provided inside a portion located between the portion 48 and the like to stop water.

Further, in this case, in the manufacturing method and the manufacturing apparatus M, in the portion between the conductor crimping portion 46 and the covering crimping portion 48 of the conductor portion W1, when the conductor crimping portion 46 and the covering crimping portion 48 are crimped, By utilizing the force, the first anti-corrosion layer 11a can be quickly and reliably penetrated between the strands of the conductor portion W1. As a result, in this manufacturing method and manufacturing apparatus M, for example, the first anti-corrosion protection 11a is applied from the outside to the portion between the conductor crimping portion 46 and the coating crimping portion 48 of the conductor portion W1. As a result, the period required for the first anti-corrosion layer 11a to permeate the inside of the conductor portion W1 can be shortened.

As described above, in this manufacturing method and manufacturing apparatus M, water is reliably stopped around the conductor portion W1, and moisture and the like are prevented from entering between the conductor portion W1 and the crimp terminal 1 toward the conductor portion W1 side. It is possible to manufacture the electric wire 100 with a terminal that is reliably regulated and that secures proper water stopping performance. As a result, with this manufacturing method and manufacturing apparatus M, it is possible to manufacture the electric wire 100 with a terminal that ensures proper waterproof performance, and in the electric wire 100 with a terminal, it is possible to ensure proper anti-corrosion performance. . For example, in the electric wire 100 with a terminal, when the material of the conductor portion W1 is aluminum and the material of the crimp terminal 1 is copper, the conductor portion W1 corrodes (galvanic corrosion) due to the difference in ionization tendency when water enters between them. There is a risk of On the other hand, the electric wire with terminal 100 can suppress the occurrence of the corrosion by regulating the infiltration of water as described above.

Here, in the manufacturing method and the manufacturing apparatus M of the electric wire with terminal 100 described above, the conductor crimping portion 46 of the crimp terminal 1 has a convex portion 46c at the end portion on the covering crimping portion 48 side. As a result, in this manufacturing method and manufacturing apparatus M, in the crimping and permeation step (step ST3), the convex portion 46c causes the first anti-corrosion layer 11a to move toward the adhesion portion side between the conductor crimping portion 46 and the conductor portion W1 as the crimping portion 46c is crimped. can be suppressed from being pushed out. As a result, the crimp terminal 1 is crimped to the electric wire W, and the conductor crimping portion 46 and the conductor crimping portion 46 are connected to each other without interposing the first anti-corrosion protection 11a in the portion where the conductor crimping portion 46 and the conductor portion W1 contact and conduct. It is possible to directly contact the conductor portion W1 for electrical continuity. As a result, the crimp terminal 1 can reliably ensure proper conduction performance. In the manufacturing method and the manufacturing apparatus M, the first anti-corrosion material 11a can be prevented from escaping to the adhesion part side in the pressure-bonding permeation step (step ST3) as described above. permeates into the conductor portion W1 and seeps out from between the conductor crimping portion 46 and the covered crimping portion 48 to the outside. As a result, in the electric wire 100 with a terminal, the manufacturing method and the manufacturing apparatus M can ensure both proper waterproof and anticorrosive performance and proper conduction performance.

Furthermore, in the manufacturing method and the manufacturing apparatus M described above, the end portion 48a of the covering crimp portion 48 is positioned in a state where the crimp terminal 1 is crimped onto the electric wire W in the pre-crimp coating step (step ST2). The first anti-corrosion layer 11a is applied so that the first anti-corrosion layer 11a also spreads over the application target portion 13b. Therefore, in this manufacturing method and manufacturing apparatus M, the first anti-corrosion material 11a that has been applied to the application target portion 13b and hardened, that is, the third anti-corrosion water portion 13 is applied to the opposite side of the coated crimping portion 48 to the conductor crimping portion 46 side. The water can be reliably stopped at the portion where the end portion 48a of is located. As a result, with this manufacturing method and manufacturing apparatus M, it is possible to manufacture the electric wire 100 with terminals that secures more appropriate water stopping performance.

Furthermore, in the manufacturing method and the manufacturing apparatus M described above, the conductor portion W1 exposed from the crimp terminal 1, the conductor crimp portion 46, the first anticorrosion exposed between the conductor crimp portion 46 and the covering crimp portion 48 A second anti-corrosion layer 12a is applied over 11a and the insulating coating portion W2 to cover them with the second anti-corrosion layer 12a. As a result, in the manufacturing method and the manufacturing apparatus M, after the crimp terminal 1 is crimped onto the wire W, the second anti-corrosion layer 12a applied to the crimp terminal 1 can reliably seal off the water in each part. As a result, in this manufacturing method and manufacturing apparatus M, water is reliably stopped around the conductor portion W1, and moisture or the like enters between the conductor portion W1 and the crimp terminal 1 toward the conductor portion W1 side. It is possible to manufacture the terminal-fitted electric wire 100 that is regulated and ensures more appropriate water stopping performance.

Here, in the manufacturing method and the manufacturing apparatus M described above, the first anti-corrosion 11a and the second anti-corrosion 12a are made of photocurable resin, and in the curing step (step ST6), the first anti-corrosion 11a and the second anti-corrosion 11a The first anti-corrosion water portion 11, the second anti-corrosion water portion 12, and the third anti-corrosion water portion 13 can be formed by irradiating the second anti-corrosion material 12a with light and hardening it. Further, in the manufacturing method and the manufacturing apparatus M described above, in the curing step (step ST6), the first anti-corrosion material 11a and the second anti-corrosion material 12a are collectively irradiated with ultraviolet rays to be cured. As a result, in this manufacturing method and manufacturing apparatus M, the manufacturing process can be shortened, and the electric wire with terminal 100 can be manufactured efficiently.

[Modification]
In the above-described curing step (step ST6), the first anti-corrosion material 11a and the second anti-corrosion material 12a are collectively irradiated with light to be cured, but the present invention is not limited to this.

10 and 11 are diagrams showing a method of manufacturing the electric wire with terminal 100 (method for manufacturing an electric wire with terminal) according to the modification, and a manufacturing apparatus MA as an electric wire with terminal manufacturing apparatus. The manufacturing method of the electric wire 100 with a terminal according to this modification differs from the above-described embodiment in that the curing step (step ST6) includes the first curing step (step ST6A) and the second curing step (step ST6B). Others are substantially the same as the embodiment described above. Accordingly, the manufacturing apparatus MA according to this modification differs in that the curing apparatus M7 includes a first curing apparatus M7A and a second curing apparatus M7B, and the rest is substantially the same as the embodiment described above. . The first curing device M7A and the second curing device M7B have almost the same configuration as the curing device M7 described above. It is configured to be able to irradiate ultraviolet rays. The manufacturing apparatus MA is provided with a first curing device M7A between the terminal cutting device M5 and the second coating device M6, and a second curing device M7B on the downstream side of the second coating device M6. The control device M8 according to this modification applies the first anti-corrosion material 11a by the first applicator M3, and then crimps the crimp terminal 1 onto the electric wire W by the crimping device M4. to harden the first anti-corrosion layer 11a. After that, the control device M8 applies the second anti-corrosion 12a by the second coating device M6 and hardens the second anti-corrosion 12a by the second hardening device M7B as the hardening device M7. Each step of this modified example will be described in detail below. However, the same reference numerals are given to the same components as in the above-described embodiment, and redundant descriptions of common configurations, actions, and effects are omitted as much as possible.

In the manufacturing method of the electric wire 100 with a terminal according to this modification, the first curing step (step ST6A) is performed after the cutting step (step ST4). After the pressure permeation step (step ST3) and before the post-press coating step (step ST5), here, after the cutting step (step ST4) and before the post-press coating step (step ST5). Then, a first curing process is performed as a first curing process (step ST6A). That is, as the first curing step (step ST6A), the control device M8 controls the first curing device M7A to perform the first curing process of irradiating and curing the first anticorrosion 11a with ultraviolet light (light). . Moreover, in the manufacturing method of the electric wire 100 with a terminal which concerns on a modification, a 2nd hardening process (step ST6B) is performed after the application|coating process after crimping (step ST5). After the post-crimping application step (step ST5), the control device M8 executes the second curing process (step ST6B), and ends the method of manufacturing the electric wire 100 with a terminal. That is, as the second curing process (step ST6B), the control device M8 controls the second curing device M7B to perform the second curing process of irradiating and curing the second anti-corrosion 12a with ultraviolet light (light). , the manufacturing method of the electric wire with terminal 100 is finished. Even in this case, with this manufacturing method and manufacturing apparatus MA, it is possible to manufacture the electric wire 100 with a terminal that reliably stops water around the conductor portion W1 and ensures proper water stopping performance, as described above. .

It should be noted that the above-described embodiments, methods for manufacturing electric wires with terminals, and apparatuses for manufacturing electric wires with terminals according to modifications of the present invention are not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. Change is possible. The terminal-equipped electric wire manufacturing method and the terminal-equipped electric wire manufacturing apparatus according to the present embodiment may be configured by appropriately combining the constituent elements of the embodiments and modifications described above.

In the above description, the first anticorrosion material 11a and the second anticorrosion material 12a can typically be made of the same UV curable resin. may be used, and, for example, the viscosities and the like may be different from each other.

Further, in the above description, the control device M8 applies the first anti-corrosion protection 11a so that the first anti-corrosion protection 11a spreads over the application target portion 13b after the crimp terminal 1 is crimped in the application step before crimping (step ST2). Although the description has been made assuming that the material is applied, the present invention is not limited to this. Further, in the above description, the method for manufacturing an electric wire with a terminal is described as including the post-crimping application step (step ST5), but the present invention is not limited to this. That is, in the above description, the anti-corrosion/water-stopping portion 10 is configured to include the first corrosion-proof/water-stopping portion 11, the second anti-corrosion/water-stopping portion 12, and the third anti-corrosion/water-stopping portion 13. As long as the first anti-corrosion/water-stopping portion 11 is provided, the second anti-corrosion/water-stopping portion 12 and the third anti-corrosion/water-stopping portion 13 may not be provided.

Further, in the above description, both the first anti-corrosion 11a and the second anti-corrosion 12a are described as being made of UV curable resin, but the present invention is not limited to this. The first anti-corrosion material 11a and the second anti-corrosion material 12a may be, for example, a thermosetting resin that is cured by applying heat.

1 Crimp terminal 2 Electrical connection part 3 Connecting part 4 Wire crimping part 5 Terminal metal fitting 6 Gap space part 10 Anticorrosion and water proof part 11 First anticorrosion and water proof part 11a First anticorrosion proof part 11b Application target part 12 Second anticorrosion and water proof part 12a Second anti-corrosion material 12b Application target portion 13 Third anti-corrosion and water-stopping portion 13b Application target portion 41 Base portions 42, 43, 44, 45 Barrel piece portion 46 Conductor crimping portion 46a Serrations 46b, 46c Protruding portion 47 Intermediate portion 48 Coating crimping portion 48a End portion 100 Wires M, MA manufacturing device (terminal-equipped wire manufacturing device)
M1 stripping device M2 terminal supply device M3 first coating device M4 crimping device M5 terminal cutting device M6 second coating device M7 curing device M7A first curing device M7B second curing device M8 control device W electric wire W1 conductor portion W1a tip W1b intermediate Exposed portion W2 Insulating coating portion W2a Terminal X Axial direction (extending direction)
Y width direction Z height direction

Claims (5)

A conductor crimping part crimped to the conductor part exposed from the end of the insulation coating part of the electric wire in which the conductive conductor part is covered with the insulation coating part having insulating properties, and to the insulation coating part Before crimping a crimp terminal including a covered crimp portion to be crimped onto the electric wire, in the crimp terminal, terminals of the crimp terminal, the conductor portion, and the insulating coating portion are crimped onto the electric wire. A pre-crimping application step of applying a first anticorrosive to a portion forming a gap space surrounded by
After the pre-crimping application step, the conductor crimping portion is crimped to the conductor portion and the covering crimping portion is crimped to the insulating coating portion, and the conductor crimping portion and the covering crimping portion are crimped. a crimping permeation step of exuding the first anti-corrosion material from between the conductor crimping portion and the covered crimping portion through the conductor portion ;
The conductor crimping portion has, at the end on the covering crimping portion side, a convex portion formed so as to protrude toward the side where the conductor portion is located and extend along a direction intersecting the extending direction of the conductor portion. characterized by
A method for manufacturing an electric wire with a terminal. A conductor crimping part crimped to the conductor part exposed from the end of the insulation coating part of the electric wire in which the conductive conductor part is covered with the insulation coating part having insulating properties, and to the insulation coating part Before crimping a crimp terminal including a covered crimp portion to be crimped onto the electric wire, in the crimp terminal, terminals of the crimp terminal, the conductor portion, and the insulating coating portion are crimped onto the electric wire. A pre-crimping application step of applying a first anticorrosive to a portion forming a gap space surrounded by
After the pre-crimping application step, the conductor crimping portion is crimped to the conductor portion and the covering crimping portion is crimped to the insulating coating portion, and the conductor crimping portion and the covering crimping portion are crimped. a pressure permeation step of exuding the first anti-corrosion material from between the conductor crimped portion and the coated crimped portion to the outside through the conductor portion ;
A post-crimping application step of applying a second anti-corrosion material to the conductor portion exposed from the crimp terminal, the conductor crimped portion, and the insulating coating portion after the crimping and penetrating step. ,
A method for manufacturing an electric wire with a terminal.
The first anticorrosion and the second anticorrosion are photocurable resins that are cured by exposure,
Furthermore, including a curing step of irradiating light to the first anticorrosion and the second anticorrosion to cure,
The method for manufacturing an electric wire with a terminal according to claim 2 . In the application step before crimping, the first anti-corrosion material spreads over a region where the end portion of the covering crimping portion opposite to the conductor crimping portion side is located in a state where the crimp terminal is crimped onto the electric wire. applying the first anticorrosion material;
The method for manufacturing an electric wire with a terminal according to any one of claims 1 to 3 . A conductor crimping part crimped to the conductor part exposed from the end of the insulation coating part of the electric wire in which the conductive conductor part is covered with the insulation coating part having insulating properties, and to the insulation coating part Before crimping a crimp terminal including a covered crimp portion to be crimped onto the electric wire, in the crimp terminal, terminals of the crimp terminal, the conductor portion, and the insulating coating portion are crimped onto the electric wire. a first applicator for applying a first anti-corrosion material to a portion forming a gap space surrounded by;
The conductor crimping portion is crimped to the conductor portion and the covering crimping portion is crimped to the insulating covering portion, and the first anti-corrosion-resistant portion is attached to the conductor portion by crimping the conductor crimping portion and the covering crimping portion. a crimping device that exudes to the outside from between the conductor crimping portion and the covering crimping portion through the
The first coating device and the crimping device can be controlled, and after the first coating device applies the first anticorrosion agent, the crimping device crimps the crimp terminal onto the electric wire. a control device ;
The conductor crimping portion has, at the end on the covering crimping portion side, a convex portion formed so as to protrude toward the side where the conductor portion is located and extend along a direction intersecting the extending direction of the conductor portion. characterized by
Wire manufacturing equipment with terminals.

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