JP2013004345A - Apparatus of manufacturing shielded electrical wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus of manufacturing a shielded electrical wire which can surely wind a conductive sheet around an outer periphery of an electrical wire while preventing twisting of both ends of the conductive sheet even when the conductive sheet with small stiffness is wound around the outer periphery of the electrical wire.SOLUTION: An apparatus of manufacturing a shielded electrical wire 100 includes: a winding conveyance table 130 configured to align a conductive sheet 20 with an outer periphery of an electrical wire 10 and form therein a groove for winding 131 along a conveyance direction MD of the electrical wire 10 and the conductive sheet 20; a first winding die 160 which is disposed on one side in a cross direction CD located upstream in the conveyance direction MD of the winding conveyance table 130, and winds one end 21 of the conductive sheet 20 around the electrical wire 10; and a second winding die 170 which is disposed on the other side in the cross direction CD located further downstream in the conveyance direction MD than the first winding die 160, and winds the other end 22 of the conductive sheet 20 around the electrical wire 10 so as to be overlapped with the one end 21 of the conductive sheet 20.

Description

  The present invention relates to a shielded wire manufacturing apparatus for winding a long conductive sheet along a longitudinal direction of a wire in a state parallel to the wire.

  Conventionally, a shielded electric wire is used from the viewpoint of improving electromagnetic shielding properties such as protection against electromagnetic noise and prevention of leakage of electromagnetic noise with respect to a wire harness arranged in an automobile or the like. When manufacturing this shielded electric wire, it is common to use a shielded electric wire manufacturing apparatus that winds a long conductive sheet along the longitudinal direction of the electric wire in a state parallel to the electric wire.

  For example, an apparatus for manufacturing a shielded wire is disclosed in which an opening (notch) is formed on the inlet side of a cylindrical molding pipe, and an overhang is formed in the opening (see, for example, Patent Document 1). . The diameter of the cylindrical molding pipe is formed so as to gradually decrease from the inlet to the outlet.

  In this shielded wire manufacturing apparatus, since the overhang is formed in the opening, the overhang can be pressed down so that both ends of the conductive sheet overlap each other. Further, since the cylindrical molding pipe is formed so as to gradually become smaller from the inlet to the outlet, the conductive sheet smoothly enters the cylindrical molding pipe. Therefore, in such a shielded wire manufacturing apparatus, both ends of the conductive sheet can be prevented from being twisted.

Japanese Patent Laid-Open No. 2002-190223 (second page, FIGS. 1 and 2)

  However, although the conventional shielded wire manufacturing apparatus described above can prevent twisting of both ends of the conductive sheet, when the conductive sheet is wound around the wire cut to a predetermined length, the outlet of the cylindrical molding pipe is small (narrow) For this reason, the conductive sheet may be sandwiched between the electric wire and the cylindrical molding pipe. For this reason, in particular, a conductive sheet having low rigidity is unlikely to pass through the outlet of the cylindrical molding pipe, and it has been difficult to wind the conductive sheet having low rigidity around the outer periphery of the electric wire.

  Therefore, the present invention provides a shielded electric wire that can reliably wrap a conductive sheet around the outer periphery of the electric wire while preventing twisting at both ends of the conductive sheet even when a conductive sheet having low rigidity is wound around the outer periphery of the electric wire. The purpose is to provide manufacturing equipment.

  In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention is a shielded wire manufacturing apparatus for winding a long conductive sheet along a longitudinal direction of a wire in a state parallel to the wire, A winding conveyance base in which winding grooves along the conveyance direction of the electric wire and the conductive sheet are formed together with the conductive sheet, and in the direction intersecting the conveyance direction on the upstream side in the conveyance direction of the winding conveyance base. A first winding type for winding one end of the conductive sheet around the electric wire, and provided on the other side in the crossing direction on the downstream side in the transport direction from the first winding type, And a second winding mold for winding the other end of the wire around the electric wire so as to overlap the one end of the conductive sheet.

  According to this feature, the winding conveyance table aligns the conductive sheet with the outer periphery of the electric wire in the winding groove. As a result, the upper part of the winding groove is not opened, so that the electric wire and the conductive sheet are not inserted into the conventional cylindrical molding pipe. Therefore, there is no conductive sheet between the electric wire and the winding groove. It won't get caught. For this reason, even if it is a case where a conductive sheet with small rigidity is wound around the outer periphery of an electric wire, a conductive sheet can be reliably wound around the outer periphery of an electric wire.

  In addition, the first winding type has one end of the conductive sheet wound around the electric wire, and the second winding type has the other end of the conductive sheet overlapped with one end of the conductive sheet on the downstream side in the transport direction from the first winding type. Wrap around the wire. That is, the first winding mold and the second winding mold are provided so as to be shifted in the transport direction, and are wound around one end and the other end of the conductive sheet, respectively. Thereby, the one end and other end of a conductive sheet do not contact | abut (it does not contact). For this reason, even if it is a case where the electroconductive sheet with small rigidity is wound around the outer periphery of an electric wire, the twist of the both ends of an electroconductive sheet can be prevented.

  Thus, the properties required for the conductive sheet can be relaxed, and the choice of the material for the conductive sheet is expanded. For this reason, it contributes to improvement of various performances, such as member cost reduction, weight reduction, bending performance, and handling property (flexibility).

  A second feature of the present invention relates to the first feature of the present invention, wherein the first winding mold is rotatably supported at one side of the winding groove, and one end of the conductive sheet is attached to the one end of the conductive sheet. A first winding claw for winding on the electric wire is provided, the second winding mold is rotatably supported on the other side of the winding groove, and the other end of the conductive sheet overlaps with one end of the conductive sheet. A gist is provided with a second claw that is wound around the electric wire.

  According to this feature, the first winding mold includes the first winding claw, and the second winding mold includes the second winding claw. Thereby, both ends of the conductive sheet are easily brought into close contact with the outer periphery of the electric wire. For this reason, the electromagnetic wave shielding property of an electric wire can be improved. Moreover, it becomes possible to make the external shape of the shielded electric wire manufactured by winding a conductive sheet around the electric wire small, and it is possible to reduce the diameter of the shielded electric wire.

  A third feature of the present invention relates to the second feature of the present invention, wherein one end of the conductive sheet is directed to the electric wire from the upstream side in the transport direction toward the downstream side in the first winding claw. A first guide for guiding is formed, and a second guide for guiding the other end of the conductive sheet toward the electric wire from the upstream side to the downstream side in the transport direction is formed on the second winding claw. This is the gist.

  According to such a feature, the first coiled nail is formed with the first guide for guiding one end of the conductive sheet toward the electric wire, and the second coiled nail is formed with the other end of the conductive sheet facing the electric wire. A second guide is formed. Thereby, the one end and other end of a conductive sheet become difficult to contact | abut, and the twist of the both ends of a conductive sheet can be prevented reliably.

  A fourth feature of the present invention relates to the third feature of the present invention, wherein the first guide and the second guide are formed so as to become narrower from the upstream side toward the downstream side in the transport direction. The gist.

  According to this feature, the first guide and the second guide are formed so as to become narrower from the upstream side toward the downstream side in the transport direction. Thereby, the one end and the other end of the conductive sheet are easily brought into close contact with the outer periphery of the electric wire toward the outlet of the winding groove. For this reason, while being able to improve the electromagnetic wave shielding property of an electric wire more, the diameter reduction of the shield electric wire manufactured by winding a conductive sheet around an electric wire is realizable.

  A fifth feature of the present invention relates to the first to fourth features of the present invention, wherein a conductive sheet supply base for supplying the conductive sheet is provided on the upstream side in the transport direction of the winding groove. The gist.

  According to this feature, the conductive sheet supply base for supplying the conductive sheet is provided on the upstream side of the winding groove in the transport direction. This makes it easier to guide the conductive sheet toward the winding groove, prevents twisting of both ends of the conductive sheet in the winding groove, and ensures that the conductive sheet is placed on the outer periphery of the wire in the winding groove. Can be wound.

  According to a sixth aspect of the present invention, in accordance with the fifth aspect of the present invention, a notch device for providing a notch for cutting the conductive sheet is provided on the upstream side in the transport direction of the conductive sheet supply base. This is the gist.

  According to this feature, a cutting device that provides a cut for cutting the conductive sheet is provided on the upstream side of the conductive sheet supply base in the conveying direction. Thereby, even after the conductive sheet is wound around the outer periphery of the electric wire, the conductive sheet is easily torn to a desired length. For this reason, the separation part formed when the conductive sheet is torn off can be set as the position of the conductive sheet to be set next. Therefore, the separation part can be made the same as the electric wire set position, and the cycle time can be shortened.

  According to a seventh aspect of the present invention, in accordance with the sixth aspect of the present invention, a supply groove is formed in the conductive sheet supply base to raise both ends of the conductive sheet in a direction away from the conductive sheet supply base. This is the gist.

  According to this feature, the conductive sheet supply base is formed with a supply groove that rises both ends of the conductive sheet in a direction away from the conductive sheet supply base. As a result, both ends of the conductive sheet are easily guided by the supply groove, and the twisting of both ends of the conductive sheet can be surely prevented in the winding groove, and the conductive sheet is securely placed on the outer periphery of the electric wire in the winding groove. Can be wound.

  An eighth feature of the present invention relates to the seventh feature of the present invention, and is summarized in that the supply groove is formed so as to become narrower from the upstream side toward the downstream side in the transport direction.

  According to this feature, the supply groove is formed so as to become narrower from the upstream side in the transport direction toward the downstream side. Thereby, both ends of the conductive sheet are likely to rise toward the entrance of the winding groove, and more easily come into close contact with the electric wire toward the entrance of the winding groove. For this reason, while being able to prevent more reliably twist of the both ends of a conductive sheet within the winding groove | channel, a conductive sheet can be more reliably wound around the outer periphery of an electric wire within the winding groove | channel.

  According to the feature of the present invention, even when a conductive sheet having low rigidity is wound around the outer periphery of the electric wire, the shield that can reliably wind the conductive sheet around the outer periphery of the electric wire while preventing twisting at both ends of the conductive sheet. An electric wire manufacturing apparatus can be provided.

FIG. 1 is a perspective view showing a part of a shielded electric wire 1 according to this embodiment. FIG. 2 is a perspective view showing the shielded wire manufacturing apparatus 100 according to the present embodiment (No. 1). FIG. 3: is a perspective view which shows the manufacturing apparatus 100 of the shielded wire which concerns on this embodiment (the 2). FIG. 4 is a plan view (viewed in the direction of arrow A in FIG. 3) showing the shielded wire manufacturing apparatus 100 according to the present embodiment. FIG. 5 is a side view (viewed in the direction of arrow B in FIG. 3) showing the shielded wire manufacturing apparatus 100 according to the present embodiment. FIG. 6 is a perspective view showing the winding mold according to the present embodiment when released. FIG. 7 is a perspective view showing the winding mold according to the present embodiment when it is retracted. FIG. 8A is a front view showing a first winding mold 160 according to this embodiment, and FIG. 8B is a front view showing a second winding mold 170 according to this embodiment. FIG. 9A is a perspective view showing the first winding die 160 according to this embodiment, and FIG. 9B is a perspective view showing the second winding die 170 according to this embodiment. FIG. 10 is a diagram for explaining processing of the conductive sheet 20 by the cutting device 150 according to the present embodiment.

  Next, an embodiment of a shielded wire manufacturing apparatus according to the present invention will be described with reference to the drawings. Specifically, (1) the configuration of the shielded wire, (2) the configuration of the shielded wire manufacturing device, (3) the configuration of the winding mold, (4) the operation of the shielded wire manufacturing device, (5) the action / effect (6) Other embodiments will be described.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(1) Configuration of Shielded Wire First, the configuration of the shielded wire 1 manufactured by the shielded wire manufacturing apparatus 100 (see FIGS. 1 to 4) according to the present embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing a part of a shielded electric wire 1 according to this embodiment.

  As shown in FIG. 1, the shielded electric wire 1 is wound around the outer periphery of the conductive sheet 20, the electric wire 10 including at least one electric wire (in the drawing, two wires) and a ground wire, the conductive sheet 20 covering the electric wire 10. A protective tape 30.

  The electric wire 10 is formed by covering a core wire with an insulating coating (not shown). One end 11 of the electric wire 10 is exposed from the conductive sheet 20, and a terminal 40 is connected to the one end 11 of the electric wire 10.

  The conductive sheet 20 has a long band shape (sheet shape) along the longitudinal direction of the electric wire 10. The conductive sheet 20 imparts electromagnetic wave shielding properties to the electric wire 10 by being wound around the outer periphery of the electric wire 10. The conductive sheet 20 has a resin layer made of an insulating resin laminated on a metal foil such as an aluminum foil or a copper foil. This metal foil covers the electric wire 10 in a state of being located on the electric wire 10 side.

  In addition, the conductive sheet 20 has one end 21 in the width direction that intersects the longitudinal direction of the conductive sheet 20 and the other end 22 that faces the one end 21. The conductive sheet 20 is wound in a state of being parallel to the electric wire 10 such that the one end 21 and the other end 22 overlap (that is, wrap around each other). Moreover, the width dimension with respect to the width direction of the conductive sheet 20 is larger than the combined width of the plurality of electric wires 10. A protective tape 30 is wound around the outer periphery of the conductive sheet 20.

  The protective tape 30 has a long strip shape (sheet shape) having insulation and flexibility, and an adhesive is applied to the back side. Since the protective tape 30 is spirally wound around the outer periphery of the conductive sheet 20, the conductive sheet 20 can be reliably fixed to the outer periphery of the electric wire 10, and the electromagnetic wave shielding property by the conductive sheet 20 is ensured. improves.

  The protective tape 30 has one end 31 in the width direction that intersects the longitudinal direction of the protective tape 30 and the other end 32 that faces the one end 31. The protective tape 30 is wound around the outer periphery of the conductive sheet 20 so that the winding portions spirally wound around the outer periphery of the conductive sheet 20 overlap each other (that is, wrap around each other). That is, in the protective tape 30, one end 31 of the first winding portion 30A wound once and the other end 32 of the second winding portion 30B wound further once following the first winding portion 30A overlap each other. ing.

(2) Configuration of Shielded Wire Manufacturing Device Next, the configuration of the shielded wire manufacturing device 100 that manufactures the above-described shielded wire 1 will be described with reference to FIGS. FIG.2 and FIG.3 is a perspective view which shows the manufacturing apparatus 100 of the shield wire which concerns on this embodiment. FIG. 4 is a plan view (viewed in the direction of arrow A in FIG. 3) showing the shielded wire manufacturing apparatus 100 according to the present embodiment. FIG. 5 is a side view (viewed in the direction of arrow B in FIG. 3) showing the shielded wire manufacturing apparatus 100 according to the present embodiment.

  As shown in FIGS. 2 to 5, the shield wire manufacturing apparatus 100 winds a long conductive sheet 20 along the longitudinal direction of the wire 10 in a state parallel to the wire 10. The shield wire manufacturing apparatus 100 includes a base 110, a support base 120, a winding conveyance base 130, a conductive sheet supply base 140, a cutting device 150, a winding die (first winding die 160 and A second winding die 170). The details of the winding mold will be described later.

  The base 110 is installed on the installation surface, and is provided in a substantially L shape with respect to the installation surface. A support base 120 is fixed to the base 110. The support table 120 supports the winding transport table 130 on the base 110 and is provided substantially perpendicular to the installation surface. A winding carrier 130 is fixed to the upper part of the support 120.

  The winding carrier 130 is provided substantially horizontally with respect to the installation surface. On the upper part of the winding carrier 130, the conductive sheet 20 is aligned with the outer periphery of the electric wire 10, and a winding groove 131 is formed along the conveying direction MD of the electric wire 10 and the conductive sheet 20. The winding groove 131 is U-shaped in a cross-sectional view of the winding transport table 130 (see FIG. 8). In addition, a holding plate 132 that presses the conductive sheet 20 supplied from the conductive sheet supply base 140 toward the winding groove 131 side is provided on the upstream side of the winding groove 131 in the conveying direction MD. The holding plate 132 holds the conductive sheet 20 so that it does not come out of the winding groove 131. Further, the electric wire 10 is supplied to the downstream side of the presser plate 132. A conductive sheet supply base 140 is provided on the upstream side in the transport direction MD of the winding transport base 130.

  The conductive sheet supply base 140 is provided on the upstream side (sheet supply side) in the transport direction MD of the winding groove 131 (winding transport base 130). The conductive sheet supply base 140 supplies the conductive sheet 20 to the winding groove 131 in order to align the conductive sheet 20 with the outer periphery of the electric wire 10.

  The conductive sheet supply base 140 is provided with a supply groove 141 that rises both ends (one end 21 and the other end 22) of the conductive sheet 20 in a direction away from the conductive sheet supply base 140 (in this embodiment, upward). The supply groove 141 is formed so as to gradually become narrower from the upstream side in the transport direction MD toward the downstream side. That is, the supply groove 141 is formed so as to gradually become narrower from the upstream side in the transport direction MD toward the downstream side in a plan view of the conductive sheet supply base 140 (see FIG. 4). A cutting device 150 is provided on the upstream side in the transport direction MD of the conductive sheet supply base 140.

  The cutting device 150 is provided on the upstream side (sheet supply side) in the conveying direction MD of the conductive sheet supply base 140. The cutting device 150 provides a cut (slit) for cutting the conductive sheet 20. The cutting device 150 includes a cutting blade 151 that forms a cut in the conductive sheet 20 and a solenoid 152 that drives the cutting blade 151. When the conductive sheet 20 reaches a desired length, the cutting blade 151 is raised by driving the solenoid 152 to form a cut in the conductive sheet 20.

(3) Configuration of winding mold Next, the configuration of the winding mold described above will be described with reference to FIGS. FIG. 6 is a perspective view showing the winding mold according to the present embodiment when released. FIG. 7 is a perspective view showing the winding mold according to the present embodiment when it is retracted. FIG. 8A is a front view showing a first winding mold 160 according to this embodiment, and FIG. 8B is a front view showing a second winding mold 170 according to this embodiment. FIG. 9A is a perspective view showing the first winding die 160 according to this embodiment, and FIG. 9B is a perspective view showing the second winding die 170 according to this embodiment.

  The winding mold includes a first winding mold 160 and a second winding mold 170. In this winding type, both ends (one end 21 and the other end 22) of the conductive sheet 20 are wound around the outer periphery of the electric wire 10.

(3.1) First Winding Mold As shown in FIGS. 6 and 7, the first winding mold 160 is provided on the upper part of the winding groove 131 formed in the winding carrier 130. Specifically, the first winding die 160 is provided on one side of the cross direction CD with respect to the conveyance direction MD on the upstream side in the conveyance direction MD of the winding conveyance table 130. The first winding mold 160 includes a first winding claw 161 for winding the one end 21 of the conductive sheet 20 around the outer periphery of the electric wire 10.

  The first winding claw 161 is rotatably supported on one side of the winding groove 131 and has a hook shape. On the surface of the first winding claw 161 on the winding groove 131 side, as shown in FIG. 8A, a substantially arc-shaped first winding recess 162 is formed. Further, as the first winding claw 161 rotates in the tilting direction, the first winding recess 162 faces the winding groove 131 and presses the conductive sheet 20 in the winding groove 131 from above. It has become.

  In addition, as shown in FIG. 9A, at the tip of the first winding claw 161, the first end 21 of the conductive sheet 20 is guided toward the electric wire 10 from the upstream side to the downstream side in the transport direction MD. A guide 163 is formed. The first guide 163 is formed so as to become narrower from the upstream side in the transport direction MD toward the downstream side.

(3.2) Second Winding Mold As shown in FIGS. 6 and 7, the second winding mold 170 is provided on the upper part of the winding groove 131 formed in the winding carrier 130. Specifically, the second winding mold 170 is provided on the other side in the cross direction CD on the downstream side in the transport direction MD with respect to the first winding mold 160. The second winding mold 170 includes a second winding claw 171 for winding the other end 22 of the conductive sheet 20 around the electric wire 10 so as to overlap the one end 21 of the conductive sheet 20.

  The second winding claw 171 is rotatably supported on the other side of the winding groove 131 and has a hook shape. On the surface of the second winding claw 171 on the winding groove 131 side, as shown in FIG. 8B, a substantially arc-shaped second winding recess 172 is formed. Further, as the second winding claw 171 rotates in the tilting direction, the second winding recess 172 faces the winding groove 131 so as to press the conductive sheet 20 in the winding groove 131 from above. It has become.

  9B, the other end 22 of the conductive sheet 20 is guided toward the electric wire 10 from the upstream side toward the downstream side in the transport direction MD. Two guides 173 are formed. The second guide 173 is formed to become narrower from the upstream side in the transport direction MD toward the downstream side.

(4) Operation of Shielded Wire Manufacturing Device Next, the operation of the above-described shielded wire manufacturing device 100 will be described with reference to FIGS. 6 to 8 and 10. In addition, FIG. 10 is a figure for demonstrating the process to the electrically conductive sheet 20 by the cutting device 150 which concerns on this embodiment.

(4.1) When the winding mold is released When the winding mold is released, as shown in FIGS. 6 and 8 (solid line), the first winding claw 161 and the second winding claw 171 are both in the rising direction. , The upper part of the winding groove 131 is opened. The conductive sheet 20 is inserted into the winding groove 131 in an open state so as to be U-shaped, and the electric wire 10 is inserted inside the conductive sheet 20.

(4.2) When the winding mold is retracted When the winding mold is retracted, as shown in FIGS. 7 and 8A (virtual line), the first winding claw 161 rotates in the collapse direction. By moving, it abuts against one end 21 of the conductive sheet 20 and winds the one end 21 of the conductive sheet 20 toward the outer periphery of the electric wire 10. At this time, the first guide 163 guides the one end 21 of the conductive sheet 20 toward the electric wire 10 from the upstream side toward the downstream side in the transport direction MD. Accordingly, the first winding claw 161 is wound so as to wrap the one end 21 of the conductive sheet 20 in the electric wire 10.

  Similarly, as shown in FIG. 7 and FIG. 8B (virtual line), the second winding claw 171 abuts against the other end 22 of the conductive sheet 20 by rotating in the tilting direction, and thus the conductive sheet. The other end 22 of 20 is wound around the outer periphery of the electric wire 10. At this time, the second guide 173 guides the other end 22 of the conductive sheet 20 toward the electric wire 10 from the upstream side toward the downstream side in the transport direction MD. Thus, the second winding claw 171 winds the other end 22 of the conductive sheet 20 so as to be wrapped around the electric wire 10.

  Then, the electric wire 10 and the conductive sheet 20 (shielded electric wire 1) are pulled out in a state where both ends (the one end 21 and the other end 22) of the conductive sheet 20 overlap each other. When the conductive sheet 20 reaches a desired length, as shown in FIG. 10, the cutting device 150 (the cutting blade 151) forms a cut 23 in the conductive sheet 20, thereby forming the conductive sheet 20. Can be torn to the desired length. Then, when the conductive sheet 20 is torn off, a separation portion 24 is formed, and the separation portion 24 can be set as a position of the conductive sheet 20 to be set next.

  Although not shown, the terminal 40 is connected to one end 11 of the electric wire 10 (see FIG. 3), the conductive sheet 20 is torn to a desired length, and then the protective tape 30 is attached to the outer periphery of the conductive sheet 20. Is wound. Thereby, the shielded electric wire 1 mentioned above is manufactured.

(5) Action / Effect In the present embodiment described above, the winding carrier 130 aligns the conductive sheet 20 with the outer periphery of the electric wire 10 in the winding groove 131. Thereby, since the upper part of the winding groove 131 is opened, the electric wire 10 and the conductive sheet 20 are not inserted into the conventional cylindrical molding pipe. The conductive sheet 20 is not sandwiched between them. For this reason, even if it is a case where the conductive sheet 20 with small rigidity is wound around the outer periphery of the electric wire 10, the conductive sheet 20 can be reliably wound around the outer periphery of the electric wire 10.

  By the way, as a method of winding the conductive sheet 20 around the outer periphery of the electric wire 10, if an upper mold that simply presses both ends of the conductive sheet 20 from the upper side toward the winding groove 131 is used, When pressing both ends, the one end 21 and the other end 22 of the conductive sheet 20 come into contact with each other, and it is difficult to wind the conductive sheet 20 around the outer periphery of the electric wire 10 well.

  Therefore, in the present embodiment, the first winding mold 160 winds the one end 21 of the conductive sheet 20 around the electric wire 10, and the second winding mold 170 is conductive on the downstream side in the transport direction MD from the first winding mold 160. The other end 22 of the sheet 20 is wound around the electric wire 10 so as to overlap the one end 21 of the conductive sheet 20. That is, the first winding mold 160 and the second winding mold 170 are provided so as to be shifted in the transport direction MD, and are wound around the one end 21 and the other end 22 of the conductive sheet 20, respectively. Thereby, the one end 21 and the other end 22 of the conductive sheet 20 do not hit each other (they do not come into contact). For this reason, even if it is a case where the electroconductive sheet 20 with small rigidity is wound around the outer periphery of the electric wire 10, the twist of the both ends of the electroconductive sheet 20 can be prevented.

  In this way, the properties required for the conductive sheet 20 can be relaxed, and options for the material of the conductive sheet 20 are expanded. For this reason, it contributes to improvement of various performances, such as member cost reduction, weight reduction, bending performance, and handling property (flexibility).

  In the present embodiment, the first winding mold 160 includes a first winding claw 161, and the second winding mold 170 includes a second winding claw 171. Thereby, both ends of the conductive sheet 20 are easily brought into close contact with the outer periphery of the electric wire 10. For this reason, the electromagnetic wave shielding property of the electric wire 10 can be improved. In addition, the outer shape of the shielded electric wire 1 manufactured by winding the conductive sheet 20 around the electric wire 10 can be reduced, and the diameter of the shielded electric wire 1 can be reduced.

  In the present embodiment, a first guide 163 that guides one end 21 of the conductive sheet 20 toward the electric wire 10 is formed on the first winding claw 161, and the second winding claw 171 includes the conductive sheet 20 in addition to the conductive sheet 20. A second guide 173 is formed with the end 22 facing the electric wire 10. As a result, the one end 21 and the other end 22 of the conductive sheet 20 are difficult to abut, and twisting of both ends of the conductive sheet 20 can be reliably prevented.

  In the present embodiment, the first guide 163 and the second guide 173 are formed so as to become narrower from the upstream side in the transport direction MD toward the downstream side. Thereby, the one end 21 and the other end 22 of the conductive sheet 20 are easily brought into close contact with the outer periphery of the electric wire 10 toward the outlet of the winding groove 131. For this reason, while being able to improve the electromagnetic wave shielding property of the electric wire 10, the diameter reduction of the shielded electric wire 1 is realizable.

  In the present embodiment, a conductive sheet supply base that supplies the conductive sheet 20 is provided on the upstream side in the conveyance direction MD of the winding groove. Accordingly, the conductive sheet 20 can be easily guided toward the winding groove 131, and twisting of both ends of the conductive sheet 20 can be prevented in the winding groove, and the electric wire 10 can be surrounded on the outer periphery of the winding groove 131. The conductive sheet 20 can be reliably wound.

  In the present embodiment, a cutting device 150 that provides a cut for cutting the conductive sheet 20 is provided on the upstream side in the conveyance direction MD of the conductive sheet supply base. Thereby, even after the conductive sheet 20 is wound around the outer periphery of the electric wire 10, the conductive sheet 20 is easily torn to a desired length. For this reason, the separation part 24 formed when the conductive sheet 20 is torn off can be set as the position of the conductive sheet 20 to be set next. Therefore, the separation part 24 can be made the same as the set position of the electric wire 10, and cycle time can be shortened.

  Further, by tearing off the conductive sheet 20, the terminal (for example, one end 11) of the electric wire 10 is exposed from the separating portion 24, and the terminal 40 can be connected to the terminal of the electric wire 10. For this reason, the removal of the conductive sheet 20 and the protective tape 30 is not necessary, and the shielded electric wire 1 having a shape and size corresponding to each shield circuit can be obtained by simply winding the protective tape 30 around the outer periphery of the conductive sheet 20 in a spiral shape. Can be manufactured. Therefore, manufacture and management of shielded electric wire 1 can be simplified.

  In the present embodiment, the conductive sheet supply base is formed with a supply groove 141 that rises both ends of the conductive sheet 20 in a direction away from the conductive sheet supply base. As a result, both ends of the conductive sheet 20 are easily guided by the supply groove 141, and twisting of both ends of the conductive sheet 20 can be reliably prevented in the winding groove, and the outer periphery of the electric wire 10 can be formed in the winding groove 131. The conductive sheet 20 can be reliably wound.

  In the present embodiment, the supply groove 141 is formed so as to become narrower from the upstream side in the transport direction MD toward the downstream side. Thereby, both ends of the conductive sheet 20 are likely to rise toward the entrance of the winding groove, and are more likely to come closer to the electric wire 10 toward the entrance of the winding groove. For this reason, while twisting of the both ends of the conductive sheet 20 can be prevented more reliably in the winding groove 131, the conductive sheet 20 can be more reliably wound around the outer periphery of the electric wire 10 in the winding groove 131.

(6) Other Embodiments As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it is understood that the description and drawings constituting a part of this disclosure limit the present invention. Should not. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. Specifically, the shielded electric wire 1 has been described as including the electric wire 10, the conductive sheet 20, and the protective tape 30, but is not limited thereto, and the electric wire 10 and the conductive sheet 20 are at least included in the shielded electric wire 1. It only has to have.

  Moreover, in the conductive sheet 20, although it demonstrated as what covers the electric wire 10 in the state in which the metal foil was located in the electric wire 10 side, it is not limited to this, In the state in which the resin layer was located in the electric wire 10 side The electric wire 10 may be covered.

  The shield wire manufacturing apparatus 100 includes a base 110, a support base 120, a winding carrier 130, a conductive sheet supply base 140, a cutting device 150, a first winding die 160, and a second winding. Although it was described as including the mold 170, the present invention is not limited to this, as long as at least the winding carrier 130, the first winding mold 160, and the second winding mold 170 are included. Good.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 ... Shield electric wire 10 ... Electric wire 20 ... Conductive sheet 21 ... One end 22 ... Other end 30 ... Protective tape 40 ... Terminal 100 ... Shielded electric wire manufacturing apparatus 110 ... Base 120 ... Support stand 130 ... Winding conveyance stand 131 ... Winding Groove 140 ... conductive sheet supply base 141 ... supply groove 150 ... cutting device 160 ... first winding type 161 ... first winding claw 162 ... first winding recess 163 ... first guide 170 ... second winding type 171 ... Claw with second winding 172 ... Concave with second winding 173 ... Second guide

Claims (8)

A shielded wire manufacturing apparatus for winding a long conductive sheet along a longitudinal direction of an electric wire in a state parallel to the electric wire,
A winding conveyance table in which a winding groove is formed along the conveyance direction of the electric wire and the conductive sheet while fitting the conductive sheet to the outer periphery of the electric wire;
A first winding mold that is provided on one side in the cross direction with respect to the transport direction on the upstream side in the transport direction of the winding transport table, and winds one end of the conductive sheet around the electric wire;
A second winding mold that is provided on the other side in the crossing direction on the downstream side in the transport direction from the first winding mold, and that winds around the electric wire so that the other end of the conductive sheet overlaps with one end of the conductive sheet; An apparatus for manufacturing a shielded wire, comprising: It is a manufacturing apparatus of the shielded electric wire according to claim 1,
The first winding mold is rotatably supported on one side of the winding groove, and includes a first winding claw for winding one end of the conductive sheet around the electric wire,
The second winding mold is rotatably supported on the other side of the winding groove, and has a second winding claw for winding the other end of the conductive sheet around the electric wire so as to overlap one end of the conductive sheet. An apparatus for manufacturing a shielded wire, comprising: It is a manufacturing apparatus of the shielded electric wire according to claim 2,
The first winding claw is formed with a first guide for guiding one end of the conductive sheet toward the electric wire from the upstream side toward the downstream side in the transport direction,
The second winding claw is formed with a second guide for guiding the other end of the conductive sheet toward the electric wire from the upstream side toward the downstream side in the conveying direction. apparatus. It is a manufacturing apparatus of the shielded electric wire according to claim 3,
The said 1st guide and the said 2nd guide are formed so that it may become narrow toward the downstream from the said conveyance direction upstream, The manufacturing apparatus of the shielded electric wire characterized by the above-mentioned. It is a manufacturing apparatus of the shielded electric wire according to any one of claims 1 to 4,
An apparatus for manufacturing a shielded electric wire, wherein a conductive sheet supply base for supplying the conductive sheet is provided on the upstream side in the conveying direction of the winding groove. It is a manufacturing apparatus of the shielded electric wire according to claim 5,
An apparatus for manufacturing a shielded electric wire, wherein a cutting device for providing a cut for cutting the conductive sheet is provided on the upstream side in the transport direction of the conductive sheet supply base. It is a manufacturing apparatus of the shielded electric wire according to claim 5 or 6,
An apparatus for manufacturing a shielded wire according to claim 1, wherein a supply groove is formed in the conductive sheet supply base to raise both ends of the conductive sheet in a direction away from the conductive sheet supply base. It is a manufacturing apparatus of the shielded electric wire according to claim 7,
The said supply groove is formed so that it may narrow toward the downstream from the said conveyance direction upstream, The shield wire manufacturing apparatus characterized by the above-mentioned.

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