JPH10310116A - Exterior packaging method and device for bundle of wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability in the exterior packaging work of a bundle of wires and reduce the cost, by easily bundling wires to form a designed shape and holding it. SOLUTION: A heat-shrinkable sheet S (thereinafter it is merely called sheet S) set in a roll setter 20 is drawn to cover the groove 12 of a winding part 10. Thereafter, a plurality of electric wires are put into the groove 12 from the upper part of the sheet S. And the electric wires are gathered and linearly bundled while bending the sheet S. Then, the end of the sheet S is held and turned over to superpose with the roll R side and then the sheet S is wound over the bundle of wires. Thereafter, a rotary member 31 is rotated to position a fusing cutter 30 to contact the opposite part 32 through the superposed part of the sheet S to fuse and weld the sheet S and cut it to remove the superfluous part. Then, the bundle 1 of wires coated with the sheet S is led through a heating tunnel 40 to uniformly shrink the sheet S in the peripheral direction and closely stick it on the external surface thereof. In this way, a state linearly bundled is retained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for sheathing a bundle of striated bodies, and more particularly, to a method of easily slivering a bundle of striated bundles into a design shape and easily holding the shape. About what you can do.

[0002]

2. Description of the Related Art Conventionally, wire bundles for vehicles and the like,
Alternatively, a bundle of striatum such as an optical fiber bundle and an air pipe bundle
2. Description of the Related Art It has been widely practiced to keep a bundled state by winding and covering an adhesive tape made of polyvinyl chloride (PVC) to cover the outer surface thereof. In particular, in the case of a wire harness (wire bundle) routed in a vehicle, it is necessary to perform this operation over a trunk line where a large amount of electric wires are converged and a branch line that branches to each electric / electronic component. .

[0003] As an exterior of such a bundle of filaments, for example, when a wire harness is produced, the outer surface of the bundle of electric wires 1 as shown in FIG. By winding the adhesive tape 2, the wire bundle 1 is covered with the adhesive tape 2 and the bundled state and shape are maintained. In FIG. 6, reference numeral 3 denotes a connector for connecting to electric / electronic parts and the like.

[0004]

However, in such a conventional sheath of a bundle of filaments, as shown in FIG. 6 (b), the worker bundles the wires 1a while bundling them. Since the wire bundle 1 is gripped so as to be maintained and the adhesive tape 2 drawn out along the outer surface is moved while being wound, a pulling force is applied in a direction different from the extending direction of the wire bundle 1. For example, when the outer diameter of the wire bundle 1 is small or when the material of the wire 1a is rich in flexibility,
The wire bundle 1 is covered with the adhesive tape 2 in a bent or meandering state, and the quality in appearance is deteriorated. For example, in the wire bundle 1 arranged in a straight line, the linearity is lost. The distance from the reference point does not match the design dimensions. For this reason, work must be performed with great care so that the wire bundle 1 has a design shape, and since this work must be performed in most parts where the wire bundle 1 needs to be exteriorized, However, there is a problem that considerable cost is required because of the great number of steps and the number of steps.

[0005] Therefore, the present invention does not maintain the bundled state of the striated body by winding the adhesive tape, but makes the striated body be designed in such a manner that the members are evenly adhered to the outer surface in the circumferential direction. An object of the present invention is to improve the workability and reduce the cost in the work of externally attaching a bundle of striated bundles so that the bundle can be easily bundled into a shape and the shape can be maintained.

[0006]

In order to achieve the above object, the invention according to claim 1 is a method for covering an exterior member on a portion of a filament extending in a bundled state, comprising: A winding step of bundling the heat shrinkable sheet around a part that holds the bundle and holding the bundled state, and a joining step of bonding an overlapping part of the heat shrinkable sheet wound around the filament bundle.
A heat-shrinking step of heat-shrinking the joined heat-shrinkable sheet and bringing the heat-shrinkable sheet into close contact with the outer surface of the filament bundle.

According to the first aspect of the present invention, the heat-shrinkable sheet is bundled with the heat-shrinkable sheet, or the heat-shrinkable sheet is wound around the heat-shrinkable sheet. Is wound. Next, one end and the other end of the heat-shrinkable sheet wound around and overlapped with the bundled state of the striatum bundle are joined by, for example, fusion. Thereafter, the bundle of filaments around which the joined heat-shrinkable sheets are wound is passed through a heating tunnel, or hot air is blown, and the heat-shrinkable sheets are thermally contracted to form an outer surface of the bundle of filaments. Adhere. Therefore, the bundle of striated bodies is kept in a state where the heat-shrinkable sheet is tightly covered and bundled only at a necessary portion.

According to a second aspect of the present invention, there is provided a sheathing device for a bundle of filaments used for carrying out the packaging method according to the first aspect, wherein the device is formed in a groove shape along the shape of the bundle of filaments. Guide means for guiding the striatum constituting the striate bundle so as to converge, and joining means for joining the heat-shrinkable sheets that extend and overlap at positions adjacent to the guide means. It is a feature.

According to the second aspect of the present invention, the guide means is covered with the heat-shrinkable sheet, and the striated body is mounted thereon, so that the striated body is fitted to the bottom of the groove-shaped guide means. Are bundled together. Next, one end side of the heat-shrinkable sheet is turned over, and the one end side and the other end side are overlapped in a state of being wound around a bundle of filaments, and then the overlapping portion is joined by an adjoining joining means. Therefore, the winding step and the joining step can be performed easily and in one place, and thereafter, by performing the heat shrinking step, only the necessary portion of the filament bundle can be covered and held in a bundled state. it can.

According to a third aspect of the present invention, in addition to the configuration of the second aspect of the present invention, the heat-shrinkable sheet drawn out is set in a roll shape so as to cover the guide means. Roll setting means, and heating means for applying heat to the heat-shrinkable sheet to the member at the heating position,
It is characterized by having. According to the third aspect of the present invention, the heat-shrinkable sheet can cover the guide means only by being pulled out from the roll set in the roll setting means, and the heat-shrinkable sheet is wound and joined to the striatum. The bundle is placed at a heating position, heated by a heating tunnel or warm air, and thermally contracted. Therefore,
A series of operations of the winding step, the joining step, and the heat shrinking step can be easily performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 to FIG. 5 are views showing an embodiment of an armoring device for carrying out the method for armoring a filament bundle according to the present invention. In this embodiment, as an example, a case where a wire harness to be routed in a straight line portion in a vehicle is manufactured, the same reference numerals are given to the same components as those in the above-described conventional technology, and the description is simplified.

First, the configuration of the sheathing device for the filament bundle will be described. 1 and 2, the exterior device includes a winding portion 10 for winding the heat-shrinkable sheet S around a placed member, and a heat-shrinkable sheet S wound in a roll shape in the direction of the upper surface portion 11 of the winding portion 10. Roll setting section 20 that can be set to be able to be pulled out, a fusion cutting section 30 that fuses and cuts the heat-shrinkable sheet S drawn on the winding section 10, and heating that heats a member passing through the inside (heating position). A tunnel section 40.

The winding portion 10 has a linear wire harness W
The upper surface portion 11 is provided with a groove 12 formed in a straight line so that the wire 1a can be placed. By simply placing a plurality of wires 1a in the groove 12, the wires 1a are linearly guided and focused. It can be in a bundled state. The roll setting section 20 is passed through the center of the roll R of the heat-shrinkable sheet S, and
A support shaft 21 rotatably supported so as to be able to be pulled out, a rotatably supported guide shaft 22 that bends the drawn-out heat-shrinkable sheet S and guides the drawn-out heat-shrinkable sheet S toward the upper surface portion 11, and a drawn-out heat-shrinkable sheet S The holding shaft 23 (FIG. 2) is supported so as to be vertically movable and rotatable so as to sandwich the
) Are provided.

When the heat-shrinkable sheet S is pulled out from the sheet roll R of the roll setting section 20 and placed on the upper surface section 11 when the heat-shrinkable sheet S is placed on the upper surface section 11, the winding section 10 has a groove perpendicular to the pull-out direction.
When a plurality of electric wires 1a are placed on the heat-shrinkable sheet S covering the groove 12, the heat-shrinkable sheet S is curved so as to follow the inner surface of the groove 12. Are bundled in the groove 12. For this reason, the electric wires 1a are bundled only by grasping and inverting the end portion (the upper end portion in FIG. 2) of the heat-shrinkable sheet S and overlapping the roll R side (the lower end portion in FIG. 2). The heat-shrinkable sheet S can be wound around the wire bundle 1. That is, the groove 12 constitutes the guide means, and the roll set section 20 constitutes the roll set means.

The fusion cutting section 30 is attached to the other end of a rotating member 31 which is rotatably supported with one side of the upper surface section 11 as a rotation fulcrum. The moving member 31 is provided so as to contact a parallel opposing portion 32 (shown in FIG. 2) adjacent to the groove 12 by rotating the moving member 31 in the direction of the upper surface portion 11. As shown in FIG. 3, the fusion cut portion 30 is
When the end portion of the heat-shrinkable sheet S wound around the wire bundle 1 and the roll R side are brought into contact with the facing portion 32 at a certain pressure or more, the fusion portion 33 undergoes heat shrinkage. The cutting section 34 cuts the heat-shrinkable sheet S while fusing the end of the sheet S to the roll R side. This fusion cutting section
30 is designed to operate when a certain pressure or more is applied, for example, the fusion unit 33 employs an impulse type fusion with an electromagnetic disk, and the cutting unit 34 is parallel to the fusion unit 33. The heat shrinkable sheet S is cut by heating with a nichrome wire. That is, the fusion cutting section 30 constitutes a joining unit. Needless to say, the fusion cutting section 30 is not limited to this method, and a cutter may be employed as a cutting mechanism.

The heating tunnel section 40 is configured to heat a member passing through a tunnel 41 opening in the same direction as the groove 12 by a heating means (not shown). Is transported at a constant speed and is carried out onto the carry-out stand 43. The fusion cutting section 30 and the heating tunnel section
The operating conditions of 40 are adjusted by the control unit 50 on the entire surface of the apparatus. According to the setting conditions of the control unit 50, the fusion cutting unit 30 is energized to the fusion unit 33 and the cutting unit 34 and heat is applied. While performing the fusion and cutting of the shrinkable sheet S, the heating tunnel portion 40 is energized by the heating means and applies heat for thermally shrinking the heat shrinkable sheet S to a member passing therethrough.

Next, the method of covering the bundle of filamentous bodies will be described with reference to FIGS. First, a heat-shrinkable sheet S made of vinyl chloride having a shrinkage temperature of 100 ° C. and having a shrinkage ratio of 60% in the winding direction (drawing direction) but hardly shrinking in the orthogonal direction is rolled. Is set in the roll setting section 20.

Next, the heat-shrinkable sheet S is pulled out from the sheet roll R, guided to be bent by the guide shaft 22, passed under the holding shaft 23, and placed so as to cover the groove 12 of the upper surface portion 11. , A plurality of electric wires 1a from the heat shrinkable sheet S
Is placed in the groove 12. At this time, as shown in FIG. 4A, the heat-shrinkable sheet S is bent into the electric wire 1a so as to follow the groove 12, and the electric wire 1a is bundled and bundled in the groove 12.

Next, as shown in FIG. 4B, the end of the heat-shrinkable sheet S is gripped, turned over, and stacked on the roll R side. At this time, the heat-shrinkable sheet S is wound around the wire 1a in a state of being bundled in the groove 12 (wire bundle 1) (wrapping step). Next, the fusion cutting portion 30 is brought into contact with the facing portion 32 via an overlapping portion of the end portion of the heat-shrinkable sheet S wound around the wire bundle 1 and the roll R side, and the heat-shrinkable sheet S at that portion is fused. At the same time as joining, as shown in FIG. 5A, the side of the heat-shrinkable sheet S separated from the wire bundle 1 is cut to remove an excess portion (joining step).

Next, the wire bundle 1 on which the heat-shrinkable sheet S is wound and joined is placed on the transport belt 42 of the heating tunnel section 40 and passed through the tunnel 41, as shown in FIG. Then, the heat-shrinkable sheet S is heat-shrinked to adhere to the outer surface of the wire bundle 1 (heat-shrinking step). At this time, since the heat-shrinkable sheet S is wound so that the direction in which the heat-shrinkable sheet S does not shrink is the extending direction of the wire bundle 1, the heat-shrinkable sheet S adheres more tightly than the portion that holds the bundled state of the wire bundle 1. Since the heat-shrinkable sheet S shrinks uniformly in the circumferential direction without shortening the portion, the heat-shrinkable sheet S adheres to the outer surface of the wire bundle 1 without applying a biased load to the wire bundle 1, for example, a pulling force. Thus, it is possible to maintain a state of being bundled in a straight line.

Thereafter, the electric wire bundle 1 (wire harness W) bundled by covering and covering the heat shrinkable sheet S is carried out to the carry-out stand 43. As described above, in the present embodiment, the electric wire bundle 1 is covered with the heat-shrinkable sheet S only by bundling the heat-shrinkable sheets S and then heat-shrinking the heat-shrinkable sheet S without applying a load by tape winding. And a wire harness W for maintaining (holding) the bundled state of the linear portions by the heat-shrinkable sheet S.
Can be produced.

In addition, this exterior work is performed by simply spreading the heat-shrinkable sheet S drawn from the sheet roll R so as to cover the groove 12 of the winding portion 10 and placing the electric wire 1a on the groove 12. And the heat-shrinkable sheet S can be curved. Thereafter, the heat-shrinkable sheet S can be wound around the wire bundle 1 simply by reversing the end of the heat-shrinkable sheet S and stacking it. Then, by merely rotating the rotating member 31 and bringing the fusion cutting portion 30 into contact with the facing portion 32, the overlapped portion of the heat shrinkable sheet S can be fused and the excess portion can be cut off. Furthermore, the heat-shrinkable sheet S can be uniformly shrunk in the circumferential direction and covered and covered by simply passing the wire bundle 1 around which the heat-shrinkable sheet S is wound through the heating tunnel portion 40 by the transport belt 42. The sheet bundle S can hold the wire bundle 1 in a state of being bundled in a straight line. Therefore, the winding step, the joining step, the heat shrinking step, and the cutting step can be easily performed, and the exterior work of the wire bundle 1 can be performed easily and without any cost.

In this embodiment, the electric wire 1 is formed by the groove 12.
a is bundled and bundled, but it is also possible to spread the heat-shrinkable sheet S on a flat surface and place a plurality of electric wires 1a thereon, and then grip and invert one end of the heat-shrinkable sheet S to invert the heat-shrinkable sheet S. Alternatively, the heat-shrinkable sheet S may be wound around the wire bundle 1. Further, although the heat shrinkable sheet S is thermally contracted by using the heating tunnel portion 40, the heat shrinkable sheet S may be thermally contracted by blowing hot air using a dryer.

[0024]

According to the present invention, after joining the ends of the heat-shrinkable sheet wound in a state where the striates are bundled (striae bundle), the heat-shrinkable sheet is shrunk by applying heat. Since the heat-shrinkable sheet is adhered to the outer surface of the bundle of filaments, only the necessary portion of the bundle of filaments can be kept in a state where the heat-shrinkable sheet is packaged. The heat-shrinkable sheet need only be wound once or several times without being wound. At this time, the heat-shrinkable sheet does not need to be pulled, and can be evenly adhered in the circumferential direction of the outer surface of the striatum bundle by heat-shrinking, so that the striatum bundle has a designed shape, for example, a linear shape. Can be fastened and held. Therefore, it is possible to easily perform the exterior work of the filament bundle without trouble and without increasing the cost.

At the time of this operation, guide means capable of converging and bundling the striated body in a form following the design shape, joining means for joining overlapping portions of the heat-shrinkable sheet, and guide means only by pulling out the heat-shrinkable sheet By adopting a roll setting means capable of covering the top and a heating means for thermally contracting the heat-shrinkable sheet wound around the bundle of filaments at the heating position, the winding step, the joining step, the heat shrinkage Each operation of the process can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an armoring device for carrying out a method for armoring a filament bundle according to the present invention.

FIG. 2 is a top view thereof.

FIG. 3 is a perspective view showing the main part from above.

FIGS. 4A and 4B are diagrams illustrating the method of packaging, in which FIG. 4A is a perspective view illustrating convergence of a striatum, and FIG. 4B is a perspective view illustrating winding of a heat-shrinkable sheet.

FIG. 5 is a view following FIG. 4 for explaining the exterior method;
(A) is a perspective view for explaining the joint cutting of the heat-shrinkable sheet, and (b) is a perspective view for explaining the heat shrinkage of the heat-shrinkable sheet.

6A and 6B are diagrams illustrating a conventional exterior method, in which FIG. 6A is a perspective view illustrating convergence of a striatum, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric wire bundle (filament bundle) 1a Electric wire (filament) 10 Hook-up part 11 Upper surface part 12 Groove (guide means) 20 Roll set part (roll set means) 30 Fusion cutting part (joining means) 31 Rotation Member 32 Opposite part 33 Fused part 34 Cutting part 40 Heating tunnel part (heating means) 41 Tunnel 42 Conveyor belt 43 Carry-out stand S Heat shrinkable sheet (exterior member) W Wire harness

Claims (3)

[Claims] 1. A method of covering an exterior member covering a portion where a striated body extends in a bundled state, wherein the striated body is bundled and a heat-shrinkable sheet is wrapped around a part for holding the striated body. A winding step of hanging, a joining step of joining overlapping portions of the heat-shrinkable sheet wound around the bundle of filamentary wires, and a heat-shrinkable sheet after joining to heat-shrink the heat-shrinkable sheet on the outer surface of the bundle of filamentary wires. And a heat shrinking step of causing the bundle to adhere to each other. 2. An exterior device for a bundle of filaments used for carrying out the method of packaging according to claim 1, wherein the bundle of filaments is formed in a groove shape following the shape of the bundle of filaments. Guide means for guiding the striatum to be focused,
And a joining means for joining the heat-shrinkable sheets stacked so as to extend adjacent to the guide means. 3. A roll setting means for setting the drawn heat-shrinkable sheet wound in a roll so as to cover the guide means, and a member at a heating position for applying heat for heat-shrinking the heat-shrinkable sheet. And a heating means for adding to the apparatus.