JPH1139969A - Method and apparatus for producing shielded wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a shield wire for which a work for stripping a sheath can be eliminated. SOLUTION: While being vertically supported with a overlapped body of a metal tape 3 and an exterior tape 4, in the lower face of a wire harness 5 comprising core wires 7 and a drain wire 8 and connected with terminals in both end parts, is positioned on a molding female die 2. Together with the metal tape 3 and the exterior tape 4, the wire harness 5 is pushed into the groove 1 formed in the molding female die 2 to be wrapped with the overlapped body of the metal tape 3 and the exterior tape 4 by pressing the wire harness 5 by a male die 10. While keeping the wire harness 5 in such a condition, the overlapping rim parts of the overlapped body of the metal tape 3 and the exterior tape 4 are pinched and joined by press bodies 11a, 11b in the inlet side of the groove 1 of the molding female die 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a wire harness comprising a core wire having a required length and having a terminal connected to both ends thereof and a drain wire having a required length.
The present invention relates to a method and an apparatus for manufacturing a shielded wire in which terminals are respectively crimped to both ends of a core wire and a drain wire.

[0002]

2. Description of the Related Art Conventionally, this type of shielded wire is manufactured by wrapping a wire harness consisting of a core wire having a required length and a drain wire having a required length as a core, wrapping the outer periphery of the core with a metal tape, and forming the metal wire. A sheath with a long structure (cable) in which the outer circumference of a coating layer made of tape is wrapped with a sheath layer formed by extrusion molding, cut at one end to a required length, and then strip off the metal tape and sheath layer at both ends to the required length. Performing a strip, exposing both ends of the core wire and the drain wire, removing the insulating coating or the oxide film at the tip of the exposed core wire and the drain wire, and performing a terminal treatment,
After crimping the terminals to both ends of the core wire and the drain wire, the terminals are inserted into the connector housing.

[0003]

However, such a conventional method for manufacturing a shielded wire has the following problems.

(A) The processing steps from fixed-size cutting of a shield wire to crimping of a terminal are diversified, and the lead time is long.

(B) Most of the processing is manual, and automation is difficult.

(C) There are many varieties depending on the combination (number, etc.) of the core wires of the shielded wire, and the inventory increases and the occurrence of dead goods often occurs.

(D) The core wire and the drain wire are easily damaged at the time of sheath stripping or the like.

(E) Quality is likely to vary due to manual operation.

An object of the present invention is to provide a method and an apparatus for manufacturing a shielded wire which can be manufactured with reduced man-hours.

Another object of the present invention is to provide a method of manufacturing a shielded wire which can omit a sheath strip operation.

Another object of the present invention is to provide a method and an apparatus for manufacturing a shielded wire which can be easily automated in manufacturing.

[0012]

A method of manufacturing a shielded wire according to the present invention comprises a wire having a required length and comprising a core wire having terminals connected to both ends thereof and a drain wire having a required length. Use a harness. A wire harness with a superposed body of a metal tape and an exterior tape longitudinally attached to a lower surface of the wire harness is arranged on a molded female mold. In this state, the wire harness is pushed by a male mold to push the wire harness together with the metal tape and the exterior tape into the groove of the molded female mold, and the wire harness is wrapped by a superposed body of the metal tape and the exterior tape. In this state, the facing edges of the superposed body of the metal tape and the exterior tape are sandwiched and joined by the press body at the entrance side of the groove of the molded female die. In this case, the outer tape may be covered with the metal tape by forming a coating layer with the metal tape and then spirally winding the outer periphery thereof.

When the shielded wire is manufactured as described above, the sheath strip operation can be omitted, and the number of operation steps can be reduced. Further, since the sheath strip operation is eliminated, it is possible to prevent the core wire and the drain wire from being damaged during the sheath strip operation. In addition, in this manufacturing method, at least at both ends of the core wire, the terminals are connected before being assembled as a wire harness, so that the terminal attaching operation can be performed when the core wire is in a single state. The mounting operation can be easily automated. Terminal attachment can also be easily performed on the drain wire as necessary. Further, in this manufacturing method, the wire harness is pushed into a molded female mold by pushing the wire harness with a male mold in a state where a superimposed body of a metal tape and an exterior tape is vertically attached, and the wire harness is pressed with the metal tape and the exterior tape. In such a state, the facing edges of the superposed body of the metal tape and the outer tape are sandwiched by a press body and joined, or the wire harness is vertically attached with only the metal tape. Is pressed into the molded female mold by pressing with a male mold, the wire harness is wrapped with a metal tape, and in this state, the facing edges of the metal tape are clamped and joined by a press body, and then covered with the metal tape. Since the sheath is formed by spirally winding the outer tape around the outer periphery of the layer, the sheath can be easily and automatically formed. Furthermore, according to such a structure, the wire harness can easily increase or decrease the number of core wires before the sheath is formed, and can prevent an increase in inventory and generation of dead goods.

In this case, it is preferable to twist the wire harness before coating the metal tape. By doing so, the shielding characteristics can be improved, and the wire harness can be prevented from being separated before the metal tape is covered.

Further, the apparatus for manufacturing a shielded wire according to the present invention uses a female mold having a groove along the longitudinal direction and arranged with the groove facing upward. At least the metal tape disposed on the molded female mold and the wire harness vertically arranged thereon are pushed into the groove of the molded female mold, and the wire harness is wrapped at least with the metal tape. Use male form. A pair of press bodies are used which are arranged on both sides of the entrance of the groove and which sandwich at least the facing edges of the metal tape inserted into the groove in a U-shape and joined.

[0016] By using the shielded wire manufacturing apparatus having such a structure, a wire harness having a required length, a core wire having terminals connected to both ends thereof, and a drain wire having a required length is used. Thus, the shielded wire can be easily manufactured. In particular, in this apparatus, a molded female mold having an upward groove, and a male mold that presses at least a metal tape and a wire harness arranged vertically on the metal tape into the groove of the molded female mold are used. The work of wrapping the harness with at least the metal tape can be easily performed. In addition, 1 is disposed on both sides of the entrance of the groove of the female mold.
The use of the pair of press bodies facilitates at least the operation of joining the facing edges of the metal tape.

In this case, if the twisting means for twisting the wire harness by clamping both ends in the longitudinal direction of the wire harness is used, it is easy to twist the wire harness before coating the metal tape. it can.

[0018]

1 to 3 show an embodiment of a shielded wire manufacturing apparatus according to the present invention.

As shown in FIGS. 1 and 2, this shielded wire manufacturing apparatus has a groove 1 along the longitudinal direction, and is formed with the groove 1 facing upward. Type 2
Having. In this molded female mold 2, a pair of positioning plates 2b and 2c are arranged on a base plate 2a, and these positioning plates 2b and 2c move while being guided by a guide portion (not shown) on the base plate 2a to move into a groove 1a. The width of the can be changed. When the width between the positioning plates 2b and 2c is determined, the positioning plates 2b and 2c are fixed to the base plate 2a with a plurality of screws (not shown). A long hole (not shown) is provided in the base plate 2a so that these screws can move as the positioning plates 2b and 2c move.

On such a molded female mold 2, a superposed body of a metal tape 3 such as an aluminum foil tape and an exterior tape 4 such as a polyvinyl chloride tape is straddled over the positioning plates 2b and 2c. It is arranged with the exterior tape 4 facing downward. The width of the metal tape 3 is smaller than the width of the exterior tape 4, and the metal tapes 3 are stacked such that the metal tape 3 exists at the center in the width direction of the exterior tape 4. An adhesive layer is provided on the upper surface of the exterior tape 4. When the exterior tape 4 is formed of a thermoplastic material, the adhesive layer can be fused, so that the adhesive layer can be omitted. As described above, the width of the exterior tape 4 is wide, and the metal tape 3 is located at the center of the exterior tape 4 in the width direction. It is exposed from both sides of the direction.

A wire harness 5 is arranged vertically above the metal tape 3 so as to correspond to the center of the metal tape 3 in the width direction. Wire harness 5
In the present example, as shown in FIG. 3, the conductor is covered with an insulating coating layer, and the insulating coating layers at both ends are removed. And a drain wire 8 formed of a bare wire to a required length. In addition, terminals can be provided at both ends of the drain wire 8 as necessary. In addition, drain wire 8
Alternatively, at least a part of the conductor may be exposed and in contact with the metal tape 3 using an insulated wire.

A pair of twists for twisting the wire harness 5 by clamping both ends of the wire harness 5 in the longitudinal direction thereof at both ends in the longitudinal direction of the mold 2. Means 9 are arranged. The twisting means 9 includes a clamp portion 9a for clamping an end of the wire harness 5, and a handle portion 9b rotatably supported by a bracket (not shown) and rotating the clamp portion 9a.

Above the groove 1 of the female mold 2, a wire harness 5 is put together with the metal tape 3 and the exterior tape 4 in the groove 1.
A male mold 10 is provided which performs an operation of pushing the wire harness 5 into the inside and wrapping the wire harness 5 with the metal tape 3 and the exterior tape 4. The male mold 10 has a pressing portion 10a on its lower surface for insertion into the groove 1, and a concave surface 10b fitted on the wire harness 5 is provided at a lower end of the pressing portion 10a. Although not shown, such a male mold 10 is adapted to be subjected to a lifting operation by an air cylinder or the like.

On both sides of the entrance of the groove 1, a pair of press bodies 11a and 11b for sandwiching and joining facing edges of the metal tape 3 and the exterior tape 4 inserted into the groove 1 in a U-shape.
Is arranged. These press bodies 11a, 11b
Although not shown, an opening / closing operation is performed by an air cylinder or the like. These press bodies 11a and 11b are simply press bodies when the exterior tape 4 has an adhesive layer, but have a heater when the exterior tape 4 does not have an adhesive layer and performs fusion bonding.

The widthwise ends of the metal tape 3 and the exterior tape 4 are supported on the press bodies 11a and 11b directly or via a support.

Next, a method of manufacturing a shielded wire using such an apparatus for manufacturing a shielded wire will be described.

As shown in FIG. 2, both ends of the superposed body of the metal tape 3 and the exterior tape 4 in the width direction are supported on the press bodies 11a and 11b directly or via a support. In this case, the width of the metal tape 3 is smaller than the width of the exterior tape 4, and the metal tapes 3 are overlapped so that the metal tape 3 exists at the center in the width direction of the exterior tape 4.

A wire harness 5 is vertically arranged on the metal tape 3 so as to correspond to the center of the metal tape 3 in the width direction.

Both ends in the longitudinal direction of the wire harness 5
As shown in FIG. 1, the wire harness 5 is twisted by turning the handle 9b by clamping each of the two ends of the molded female mold 2 in the longitudinal direction by the clamps 9a of the twisting means 9.

Next, the male mold 10 is lowered to press the pressing portion 10a.
The wire harness 5 is lowered at the concave surface 10b at the tip of
As shown in FIG. 4A, the wire harness 5 is pushed into the groove 1 together with the metal tape 3 and the exterior tape 4. Thereby, as shown in FIG. 4A, the wire harness 5 is wrapped in a U-shape with a superposed body of the vertically attached metal tape 3 and the exterior tape 4.

In this state, as shown in FIG.
The opposite edge of the superposed body of the metal tape 3 and the exterior tape 4 is pressed by the pressing body 11 at the entrance side of the groove 1 of the female mold 2.
a and 11b to be joined. In this case, when the exterior tape 4 has an adhesive layer, the facing edges of the exterior tape 4 are adhered by being pressed by the press bodies 11a and 11b. When the exterior tape 4 is formed of a thermoplastic resin, the pressing members 11a, 11b
, The facing edges of the exterior tape 4 are fused.

Thus, a shielded wire is manufactured. In this state, the conductor of the drain wire 8 is in contact with the metal tape 3 at any point.

The metal tape 3 and the outer tape 4 are not superimposed, and only the metal tape 3 is used as the pressing members 11a, 11a.
When the metal tape 3 is supported on the metal tape 3, a metal tape 3 having a thickness enough to be able to self-hold a given shape by plastic deformation is used. After wrapping the wire harness 5 in a U-shape using the metal tape 3 as described above, the facing edges of the metal tape 3 are pressed into the pressing body 11.
When pressed at a and 11b, the metal tape 3 is plastically deformed, and the opposing edges are joined.

The semi-finished shield wire thus obtained is
After detaching from the apparatus, the tape is wound on a tape winding machine, and the outer tape 4 is spirally wound around the outer periphery of the coating layer formed by the metal tape 3 to cover the outer periphery, thereby completing the shield wire.

The metal tape 3 and the outer tape 4 may be covered with the wire harness 5 without twisting as described above.

The number of core wires 7 of the wire harness 5 can be changed as required. In this way, the number of core wires 7 is increased and the wire harness 5
When the distance becomes thicker, the distance between the positioning plates 2b and 2c may be increased.

When the shielded wire is manufactured as described above, the sheath strip operation can be omitted, and the number of operation steps can be reduced. Further, since the sheath strip operation is eliminated, it is possible to prevent the core wire 7 and the drain wire 8 from being damaged during the sheath strip operation. In this manufacturing method, at least the core wire 7
Since the terminals 6 are connected to both ends of the wire harness 5 before being assembled as a wire harness 5, the work of attaching the terminals 6 can be performed when the core wire 7 is in a single state. It can be done easily. When attaching terminals to the drain wire 8 as well, the terminal attaching operation can be easily automated in the same manner. Further, in this manufacturing method, the wire harness 5 is connected to the male mold 1 in a state where the superposed body of the metal tape 3 and the exterior tape 4 is vertically attached.
When the wire harness 5 is pushed into the molded female mold 2 by pushing it at 0, the wire harness 5 is wrapped with a superimposed body of the metal tape 3 and the exterior tape 4. Press body 11 with facing edges
The wire harness 5 is pushed into the molded female mold 2 by pressing the wire harness 5 with a male mold 10 while holding the metal harness 5 vertically while holding the metal harness 5 alone. 3 and the facing edges of the metal tape 4 are pressed in this state by pressing bodies 11a, 1
1b, the sheath is formed by spirally winding the exterior tape 4 around the outer periphery of the coating layer formed by the metal tape 3, so that the sheath can be easily and automatically formed. Furthermore, according to such a structure, the number of the core wires 7 in the wire harness 5 can be easily increased or decreased before the sheath is formed, so that an increase in stock and generation of dead goods can be prevented.

In this case, if the twist is applied to the wire harness 5 before coating the metal tape 3, the shielding characteristics can be improved, and the wire harness 5 can be separated before coating the metal tape 3. Can be prevented.

On the other hand, such an apparatus for manufacturing a shielded wire comprises a wire harness 5 having a required length, a core wire 7 having terminals 6 connected to both ends thereof, and a drain wire 8 having a required length. Can be used to easily manufacture the shielded wire. In particular, in this apparatus, a male female mold 2 having an upwardly directed groove 1 and a metal tape 3 and a wire harness 5 arranged vertically attached thereon are pressed into the female female mold 2 in the groove 1. Since the mold 10 is used, the work of wrapping the wire harness 5 with at least the metal tape 3 can be easily performed. Also, the groove 1 of the molded female mold 2
Pair of press bodies 11a, 11 arranged on both sides of the
When b is used, at least the operation of joining the facing edges of the metal tape 3 can be easily performed.

In this case, if twist means 9 for clamping the wire harness 5 at both ends in the longitudinal direction and twisting the wire harness 5 is used, the work of twisting the wire harness 5 before coating the metal tape 3 is performed. It can be done easily.

[0041]

According to the method for manufacturing a shielded wire according to the present invention, a wire harness having a superposed body of a metal tape and an outer tape vertically attached to a lower surface of a wire harness is arranged on a forming female die. By pushing the wire harness with a male mold, it is pushed into the groove of the molded female mold together with the metal tape and the outer tape, and the wire harness is wrapped with a superposed body of the metal tape and the outer tape, and the facing edges of these tapes are wrapped. Since it is sandwiched and joined by the press body at the entrance side of the groove of the molded female mold, the shielded wire can be manufactured without sheath stripping work, and the number of working steps can be reduced. Further, since the sheath strip operation is eliminated, it is possible to prevent the core wire and the drain wire from being damaged during the sheath strip operation. In addition, in this manufacturing method, at least at both ends of the core wire, the terminals are connected before being assembled as a wire harness, so that the terminal attaching operation can be performed when the core wire is in a single state. The mounting operation can be easily automated.
Further, according to this manufacturing method, the number of core wires in the wire harness can be easily increased or decreased before the sheath is formed, and an increase in inventory and generation of dead goods can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a shielded wire manufacturing apparatus according to the present invention.

FIG. 2 is a cross-sectional view of the device shown in FIG.

FIG. 3 is a plan view showing a configuration of a wire harness used in the present example.

FIGS. 4A and 4B are explanatory diagrams of manufacturing steps in an example of a method for manufacturing a shielded wire according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Groove 2 Mold female mold 2a Base plate 2b, 2c Positioning plate 3 Metal tape 4 Exterior tape 5 Wire harness 6 Terminal 7 Core wire 8 Drain wire 9 Twisting means 9a Clamp portion 9b Handle portion 10 Male type 10a Pressing portion 10b Concave surface 11a, 11b Press body

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuhiko Asami 1000 Ogaki, Kojimachi, Inagami-gun, Shiga Prefecture Within Omi Electric Cable Co., Ltd. Inside the corporation

Claims (5)

[Claims] 1. A laminated body of a metal tape and an exterior tape on a lower surface of a wire harness comprising a core wire having a required length and terminals connected to both ends thereof and a drain wire having a required length. Is placed on the molded female mold, and the wire harness is pushed into the groove of the molded female mold together with the metal tape and the outer tape by pressing the wire harness with the male mold. The wire harness is wrapped with a superimposed body of the metal tape and the exterior tape, and in this state, the facing edge of the superimposed body of the metal tape and the exterior tape is set to the entrance side of the groove of the molded female mold. A method for manufacturing a shielded wire, wherein the shielded wire is sandwiched and joined by a press body. 2. A wire harness comprising a core wire having a required length and a terminal wire connected to both ends thereof and a drain wire having a required length, and a lower surface of a wire harness having a metal tape longitudinally attached thereto. The wire harness is placed on a molded female mold, and the wire harness is pushed by a male mold to push the wire harness together with the metal tape into the groove of the molded female mold, and the wire harness is wrapped with the metal tape. Then, the facing edges of the metal tape are sandwiched and joined by a press body at the entrance side of the groove of the molded female mold, and thereafter, an exterior tape is spirally wound around the outer periphery of the coating layer formed by the metal tape. Method of manufacturing shielded wire. 3. The method according to claim 1, wherein a twist is applied to the wire harness before coating the metal tape. 4. A molded female mold having a groove along the longitudinal direction and arranged with the groove facing upward, at least a metal tape disposed on the molded female mold, and vertically attached to the metal tape. A male mold for pressing the arranged wire harness into the groove of the molded female mold to wrap the wire harness with at least the metal tape; and a male mold arranged on both sides of an entrance of the groove and having a U in the groove. And a pair of press bodies for sandwiching and joining at least the facing edges of the metal tape inserted in the shape of a shield. 5. A molded female mold having a groove along the longitudinal direction and arranged with the groove facing upward, at least a metal tape disposed on the molded female mold, and vertically attached to the metal tape. Twisting means for clamping the wire harness at both ends in the longitudinal direction of the molded female mold to twist the wire harness among the arranged wire harnesses, and twisting the wire harness with at least the metal tape. A male mold that presses into the groove of the molded female mold and wraps the wire harness at least with the metal tape, and at least one that is disposed on both sides of the entrance of the groove and inserted in the groove in a U shape An apparatus for manufacturing a shielded wire, comprising: a pair of press bodies for sandwiching and joining opposed edges of the metal tape.