JPH11273473A - Wire harness disassembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire harness disassembling method which can collect copper material effectively and reduce the amount of shredder dusts. SOLUTION: Connectors and exterior components for protection of electric wires are removed using a tool from wire harnesses put off from an automobile or any industrial apparatus. A cut 10 is provided in an adhesive tape 5 wound round the electric wires 2. The electric wires 2 positioned at the end of the wire harness are grouped into two bundles 2a and 2b, and each is torn into two sides mechanically or manually, which causes the adhesive tape 5 to be torn at the cut 10, bloat from the wire harness, and exfoliate from the electric wires 2. An organic solvent is sprayed to the tape 5 remaining attached to the wires 2 and a rotary brush is put in contact, and thereby the residues of the tape 5 are removed from the wires 2 completely, This permits easy separation and sorting of the wires 2 and exterior components and tape 5 from one another.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to automobiles,
The present invention relates to a method for disassembling a wiring harness for electric wiring used in industrial equipment.

[0002]

2. Description of the Related Art In general, automobiles and industrial equipment whose use period has expired are disposed of as industrial waste after a specialized dismantler performs dismantling work.

[0003] For example, in the case of a car, a scrap car paid out from a dealer or a used car dealer is dismantled by an automobile dismantling dealer. At this time, the dismantling company removes the engine, the underbody, the battery, the tires, and the like from the automobile, and hands over the remaining body portion to the shredder company.

[0004] A shredder contractor crushes the vehicle body to form a lump having a diameter of about 10 cm, and then selectively collects only iron. Then, the shredder dust after the iron has been recovered is transported to a managed landfill, and is subjected to landfill processing. Note that a managed landfill is a landfill managed so that lead harmful to the environment is not eluted.

[0005] Automobiles use a large number of wire harnesses composed of a group of electric wires, connectors, exterior parts, and the like. Conventionally, however, the wire harnesses are crushed together with the vehicle body without being collected, and mixed into shredder dust. It had been subjected to landfill processing in the state where it was done.

[0006]

However, the wire harness contains a large amount of copper (electric wire conductor) which is high in value as a recycled product, and processing this as shredder dust from the viewpoint of effective use of resources. There's a problem.

[0007] Landfills are limited, and it is difficult to construct a new landfill. Therefore, there is a strong demand for reduction of shredder dust emissions.

The present invention has been made in view of the above problems, and has as its object to provide a wire harness disassembling method capable of efficiently recovering copper and reducing the amount of shredder dust discharged. I do.

[0009]

According to a first aspect of the present invention, there is provided a wire harness dismantling method for disassembling a wire harness for electric wiring, the method comprising: (a) protecting an electric wire from the wire harness; (B) a cutting step of cutting the adhesive tape wound around the electric wire, and (c) a peeling step of peeling the adhesive tape from the electric wire.

According to a second aspect of the present invention, in the wire harness disassembling method according to the first aspect of the present invention, the peeling step includes a step of spraying an organic solvent on the adhesive tape.

According to a third aspect of the present invention, in the wire harness disassembling method according to the first or second aspect of the present invention, in the peeling step, a rotating brush is brought into contact with the adhesive tape to remove the adhesive tape. A stripping step is included.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a flowchart showing the procedure of the wire harness disassembly method according to the present invention. FIG.
FIG. 3 is a perspective view showing an example of a wire harness before disassembly.

As described above, the wire harness is composed of an electric wire 2 made of a vinyl chloride (PVC) coating and a soft copper wire.
Connector 1 consisting of a housing (made of PBT, PA, etc.) into which a copper alloy terminal is inserted, adhesive tape 5 (vinyl chloride and adhesive), exterior part 3 for protecting electric wire 2 (PP molded resin, etc.) ) And various other components. The wire harness is wound around the adhesive tape 5 in a state in which the plurality of electric wires 2 connecting the CPU, the display device, and the respective switches are bundled in a cylindrical shape, or is held in a fixed shape by the exterior component 3 of a resin molded product. As a result, it is mounted in accordance with the wiring configuration in the body of the automobile or the electrical equipment.

The problem in dismantling the wire harness is that the electric wires 2 and the electric wires 2 and the exterior parts 3 are wound many times by the adhesive tape 5 and are tightly fixed. The point is that removal and removal of the tape 5 is complicated and difficult. Therefore, in the present invention, the wire harness is disassembled as follows.

First, as a preparation stage for wire harness disassembly, the wire harness is removed from the vehicle or the industrial equipment (step S1). The wire harness at this stage is in a state as shown in FIG. Then, the exterior components 3 such as the connector 1, the protector 3a, and the corrugated tube 3b are removed from the wire harness (Step S2). This operation is performed using a tool such as a nipper. FIG. 3 is a perspective view showing the wire harness with the connector 1 and the exterior component 3 removed.

Next, a cut is made in the adhesive tape 5 wound around the electric wire 2 using a cutter or the like (step S3). FIG. 4 is a perspective view showing the wire harness at the stage when a cut is made in the adhesive tape 5. In the figure, one cut 10 is made in the adhesive tape 5, but the number of cuts 10 may be two or more.

Next, the electric wire 2 located at the end of the wire harness is divided into two bundles, and the adhesive tape 5 is peeled off by splitting it by a machine or manually (step S).
4). FIG. 5 is a perspective view showing how the adhesive tape 5 is peeled off. By dividing the electric wire 2 into two bundles 2a and 2b and pulling each of them on both sides, the adhesive tape 5 wound around the electric wire 2 is torn from the cut 10 and rises from the wire harness, and peels off from the electric wire 2. That is, the wire 2 was firmly secured only by separating the wire 2 into two bundles 2a and 2b by previously making a cut 10 along the longitudinal direction of the wire 2 in the adhesive tape 5. The adhesive tape 5 can be easily peeled off. When the electric wire 2 is split into the two bundles 2a and 2b, it is preferable that the ends of the bundles 2a and 2b are fixed by metal or resin fixing bands so as not to be dispersed. In addition, electric wire 2
May be divided into three or more bundles.

At this time, if two or more cuts 10 are made in the adhesive tape 5, the peeling work becomes easier, but the adhesive tape 5 cut into small pieces is attached to the surface of the electric wire 2. May adhere. Since it is very complicated work to remove the adhesive tape 5 adhered as the small pieces one by one, this embodiment is as follows.

First, in step S5, an organic solvent is sprayed on the electric wire 2 to which the small pieces of the adhesive tape 5 have adhered. FIG. 6 is a diagram showing a state in which an organic solvent is sprayed on the electric wire 2 to which the small pieces 5a of the adhesive tape 5 have adhered. By spraying the organic solvent onto the electric wire 2 from the organic solvent discharge nozzle 20, the adhesive material of the adhesive tape 5 is dissolved, and the adhesiveness of the small piece 5a disappears. Any organic solvent may be used as long as it can dissolve the adhesive, and for example, acetone, MEK (methyl ethyl ketone), or an alcohol solvent can be used. In this step, the electric wire 2 may be immersed in the organic solvent instead of spraying the organic solvent on the electric wire 2.

The step S5 is not an essential step for removing the small pieces 5a of the adhesive tape 5, but this makes it easier to remove the small pieces 5a in the subsequent steps, and ensures the removal of the small pieces 5a.

Next, the process proceeds to step S6, in which the small piece 5a of the adhesive tape 5 is peeled off from the electric wire 2 by a rotating brush.
FIG. 7 is a diagram illustrating a state in which the small piece 5 a is peeled off from the electric wire 2 by the rotating brush 30. By rotating the rotating brush 30 and making contact with the electric wire 2, the small pieces 5 a attached to the electric wire 2 are peeled off and removed.

At the stage where the steps up to step S6 have been completed, all members except the electric wire 2 are removed from the wire harness, and only the electric wire 2 remains. Then, finally, a nugget process is performed on the electric wire 2 (step S7).
The nugget treatment is a treatment in which the electric wire 2 is finely cut, and then the resin component as a coating and the pure copper as a conductive wire are separated by a sieve or the like.

In this manner, the metal material such as the conductive wire (pure copper) and the terminal material (mainly brass) of the wire harness and the resin material such as the exterior component and the adhesive tape can be easily separated and separated. This makes it possible to efficiently collect copper, brass, and the like, which have high value as recycled products. Also,
Shredder dust emissions can be significantly reduced. As a result, the recycling of the wire harness can be spread.

[0025]

As described above, according to the first aspect of the present invention, a removing step of removing an exterior part for protecting an electric wire from a wire harness, and a cutting step of cutting an adhesive tape wound around the electric wire. And a peeling step of peeling the adhesive tape from the electric wire, so that the electric wire of the wire harness, the exterior component, and the adhesive tape can be easily separated and separated. This makes it possible to form an electric wire and efficiently collect copper having high value as a recycled product. Further, the amount of shredder dust emission can be significantly reduced.

According to the second aspect of the present invention, since the organic solvent is sprayed on the pressure-sensitive adhesive tape, the pressure-sensitive adhesive material of the pressure-sensitive adhesive tape dissolves, the adhesiveness disappears, and the pressure-sensitive adhesive tape attached to the electric wire is easily removed. can do.

According to the third aspect of the present invention, the adhesive tape is peeled off by bringing the rotating brush into contact with the adhesive tape, so that the adhesive tape attached to the electric wire can be reliably removed.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a procedure of a wire harness disassembly method according to the present invention.

FIG. 2 is a perspective view showing an example of a wire harness before disassembly.

FIG. 3 is a perspective view showing the wire harness in a state where a connector and exterior parts have been removed.

FIG. 4 is a perspective view showing the wire harness at the stage when a cut is made in the adhesive tape.

FIG. 5 is a perspective view showing a state in which an adhesive tape is peeled off.

FIG. 6 is a view showing a state in which an organic solvent is sprayed on the electric wire to which a small piece of the adhesive tape has adhered.

FIG. 7 is a view showing a state in which a small piece of an adhesive tape is peeled off from an electric wire by a rotating brush.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector 2 Electric wire 3 Exterior part 5 Adhesive tape 10 Cut 20 Organic solvent discharge nozzle 30 Rotary brush

Claims (3)

[Claims] 1. A wire harness disassembly method for disassembling a wire harness for electric wiring, comprising: (a) a removing step of removing an exterior component for protecting an electric wire from the wire harness; and (b) winding around the electric wire. A wire harness disassembly method, comprising: a cutting step of cutting the adhesive tape that has been provided; and (c) a peeling step of peeling the adhesive tape from the electric wire. 2. The wire harness disassembly method according to claim 1, wherein the peeling step includes a step of spraying an organic solvent on the adhesive tape. 3. The wire harness disassembling method according to claim 1, wherein the peeling step includes a step of peeling off the adhesive tape by bringing a rotating brush into contact with the adhesive tape. Wire harness disassembly method.