JP3342192B2 - Standard-size cutting and insulated conductors for insulated wires - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting a conductor to a predetermined size and providing a conductor for use as a lead wire of a circuit component.
Things.

[0002]

2. Description of the Related Art Lead wires previously soldered or welded to circuit components and the like and bond wires (hereinafter simply referred to as "lead wires") used for connection between electrical components of various electrical products are used. Usually, it is obtained by cutting an insulated wire wound around a hobbin into a predetermined length, and after this cutting, it is necessary to form a conductor. The length of the conductor is usually 30 mm or less, and the conductor is led out by making a circumferential cut in the covering layer at the end of the electric wire and forcing the terminal covering layer with the cut. It is known that it is pulled out.

[0003]

However, in the above-described known method of extracting a conductor, there is a fear that the cutter may come into contact with the conductor and damage the conductor.
If the lead wire is subjected to a tensile force or a bending moment during use of the circuit component, there is a concern that the lead wire may be prematurely broken at the damaged portion.

In addition, when the conductor is a bundle of fine wires, and when the conductor is a bundle of fine wires, the bundle conductor is separated by pulling out the terminal portion coating layer, and the lead conductor is soldered. Or welding or caulking becomes difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to cut an insulated wire to a fixed length, and to reliably remove the conductor from the end portion of the wire, thereby making it possible to safely cut out the insulated wire.
An object of the present invention is to provide a conductor tapping method .

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided an insulated coating electrode.
The standard cutting method for conductors and the conductor opening method are
Pull out the edge-covered wire by a predetermined length and cut it.After cutting,
In the method of tapping a conductor, an insulated wire is
Around the wire conductor at the beginning of the winding with a connecting wire.
And the cutter is electrically connected to the
Can, before cutting the insulated wire to a predetermined length, the cutter while detecting the presence or absence of operation of the current detector - a circumferential cut for stripping the coating layer placed in a coating layer by, then cleavage of the insulated wire After that, the terminal portion coating layer is peeled off from the terminal portion of the cut electric wire at the boundary, and the exposed conductor can be twisted during the stripping of the terminal portion coating layer. The cutter can be used for cutting an insulated wire.

The present invention is mainly used for conducting a lead of a lead wire which is attached to an electric circuit component in advance by soldering. The insulated wire wound on a bobbin is drawn out by a predetermined length and cut. According to the present invention, the cutting of the conductor at the end of the electric wire on the hobbin side can be performed by the present invention. Hereinafter, the configuration of the present invention in this case will be described with reference to the drawings.

In FIG. 1A to FIG. 1C,
Reference numeral 1 denotes an insulated wire (for example, a vinyl chloride resin-coated wire having an outer diameter of 10 mm or less, a synthetic resin-coated wire such as a polyethylene-coated wire), 11 denotes its conductor, and 12 denotes a coating layer. Reference numeral 2 denotes a cutter for making a cut in the coating layer of the insulated wire. For example, a cutter having an upper blade and a lower blade for sandwiching the wire from above and below is used. Reference numeral 3 denotes an energization detector, which includes an energization display element (for example, a light emitting diode) and a DC power supply. Reference numeral 4 denotes a connection electric wire which electrically connects the cutter-2 and the far end e of the insulated wire (the start end of winding on the hobbin) via the conduction detector 3, and a flexible insulated wire is used. It is used.

In order to process the conductor from the end portion of the insulated wire according to the present invention, before cutting the insulated wire with a cutter-2, first, as shown in FIG. At a position in front of the scale cutting position p, a peeling circumferential cut a is made in the coating layer 12. In this case, if the cutter-2 and the conductor 11 come into contact with each other, the contact is detected by the lighting of the display element of the power supply detector 3, and a work defect is warned. Thereafter, as shown in FIG. 1 (b), the insulated wire 1 is cut to a fixed length by the cutter-2, and then, as shown in FIG. When the covering layer 120 of the terminal portion on the side where the wire is inserted is pulled out by a pull-out tool (not shown), and the removal of the terminal portion covering layer 120 is completed, the conductor outlet work of the insulated wire terminal portion according to the present invention is completed. To end. Thereafter, the cutting in the circumferential direction for peeling off the coating layer prior to the cutting of the fixed length, the cutting of the fixed length, and the removal of the terminal portion coating layer are repeated.

In the above, the conductor 11 of the insulated wire 1
Is composed of a bundle of fine strands, when the terminal coating layer 120 on the cut side is being pulled out, this coating layer 12
0 is pinched by a rotating tool (not shown), and FIG.
It is preferable to add a twist to the exposed conductor 110, as shown in FIG.

In the present invention, as shown in FIG. 2A, circumferential cuts a, a for peeling off the coating layer are formed on both sides of the fixed-size cut portion p, and the cuts in FIG. 2) As shown in FIG. 2 (b), a fixed-size cut wire piece is obtained in which cuts a, a are formed in the coating layers 120, 120 at both ends, and then, as shown in FIG. It is also possible to extract the coating layers 120, 120 at both end portions with a pull-out tool, respectively. In this configuration as well, when the electric wire conductor 11 is a bundle of fine strands, as shown in FIG. In the middle of pulling out each terminal portion coating layer 120, the exposed conductor 110
It is preferable to add torsion.

In the present invention, before cutting the insulated wire into fixed lengths, as shown in FIG. 3 (a), depending on the cut length, each coating layer on both ends of the front wire portion 100 is covered. The circumferential cuts a and a 'for peeling the layer are made, and the terminal covering layer 120' on the side of the cut a 'is peeled off before cutting to a fixed length, and after the terminal covering layer 120' is peeled off, as shown in FIG. As shown in (b), it is also possible to perform fixed-size cutting, and then peel off the terminal portion coating layer 120 on the side of the cut a.

[0013] In this case, for stripping the end portion coating layer on the side of the cut a 'before cutting the fixed length, a feed mechanism (for example, a screw type, an air cylinder type, etc.) is added to the cutter device and the feed is performed. By applying a force to the terminal portion coating layer 120 ′ having the cut a ′, the blade of the cutter 2 acts as a pusher, the terminal portion coating layer 120 ′ can be extracted. If the cutter and the conductor are in contact with each other even during the removal of the layer, the contact can be detected by turning on the display element of the conduction detector to warn of a defective operation. Of course, it is also possible to use a dedicated tool (separate from the cutter) for holding and pulling the outer periphery of the terminal portion coating layer.

Also in this configuration example, when the electric wire conductor is a bundle of fine wires, it is preferable to twist the exposed conductor during the drawing of the cut end portion coating layer 120 ′. In this case, a rotating mechanism is added to the cutter device, and the exposed conductor can be twisted by applying a rotating force to the cutter blade as an attachment to the cut end portion coating layer. In this case, if the cutter and the conductor come into contact with each other, the contact can be detected by lighting of the display element of the conduction detector, and an operation failure can be alerted. Of course, it is also possible to use a special tool for clamping the outer periphery of the terminal portion coating layer and applying a rotational force.

[0015] In the present invention, the cutter is electrically connected to the electric wire conductor and the connection electric wire via the electric connection detector to detect the presence or absence of the operation of the electric connection detector, and the terminal covering is cut. Without completely removing the layer, the terminal covering layer can be completely removed during welding or the like of the lead-out conductor by using the lead-out conductor until the time of welding or the like of the lead-out conductor. In this case, it is preferable to completely remove the end portion covering layer after twisting the conductor, and to twist the conductor immediately after the above-described cut is made with a cutter or at the time of welding or the like. Is also good.

[0016]

When the blade of the cutter-2 comes into contact with the conductor 11, this contact is detected by the operation of the conduction detector 3, and the detected lead wire can be handled and eliminated as a defective product. Therefore,
Advantageous Effects of Invention According to the present invention, it is possible to perform conductor tapping while reliably preventing the conductor from being damaged.

[0017]

EXAMPLE A 20 mm-dia. Bobbin wound insulated wire with a 2.0 mm outside diameter was produced by extrusion coating a polyvinyl chloride resin on a 1.0 mm outside diameter conductor consisting of 20 strands of 0.18 mm outside diameter. 130 mm before each cut and 5 mm forward from the cut position.
A cut was made in the circumferential direction at the position of mm, and after cutting to a fixed length, the terminal coating layer on the cut side of the cut wire piece was pulled out 20 times to obtain 20 lead wires.
Of these 20 times, the number of times the energization detector has been activated is 2 times, and the lead wire at each time is excluded as a defective product.

[0018]

According to the present invention, an insulation wound on a bobbin is provided.
When pulling out the insulated wire by a certain length and cutting it,
Prior to the cutting, the cutter can reliably eliminate the occurrence of cutter-contact flaws in the conductor and make a circumferential cut for peeling off the coating layer. A lead wire can be easily obtained, and an accident of equipment due to early breakage of a lead wire of a circuit component can be avoided. Further, when the bundle of the strands is a conductor, the strands can be prevented from coming apart due to the twisting of the strands, and the lead-out conductor can be easily soldered, welded, or caulked.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing each operation stage of a method for extracting a conductor of an insulated wire terminal according to the present invention, and FIG.
Fig. 1 shows a stage in which a cut is made in the coating layer by a cutter before cutting the fixed length, Fig. 1 (b) shows a state immediately after cutting the fixed length, and Fig. 1 (c) shows removal of the cut end portion coating layer. Each stage is shown.

FIG. 2 is an explanatory view showing each working stage of another configuration example of the present invention. FIG. 2 (a) shows a stage in which a cut is made in a coating layer by a cutter before cutting to a fixed size, and FIG. (B) shows a wire piece cut to a fixed size, and (c) in FIG. 2 shows a step of extracting the cut end portion coating layer.

FIG. 3 is an explanatory view showing each working stage of another configuration example of the present invention. FIG. 3 (a) shows a stage in which a cut is made in a coating layer by a cutter before cutting to a fixed size. 3 (b) shows the step of extracting the end coating layer of the wire piece cut to the fixed size.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated coated electric wire 11 Conductor 12 Coating layer 110 Exposed conductor 120 Terminal part coating layer 2 Cutter a cut 3 Electricity detector 4 Connection electric wire p Standard cutting position

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02G 1/14 G01R 31/02 H02G 1/12

Claims (3)

(57) [Claims] An insulated wire wound on a bobbin has a predetermined length.
How to cut and pull out conductors one by one
In, winding the insulated wire around the bobbin
To the wire conductor at the female end via a conduction detector
The cutter is electrically connected, and before cutting the insulated wire to a predetermined length, the cutter is used to detect the presence / absence of the operation of the energization detector and to make the circumferential cut for peeling the coating layer into the coating layer. Insert, then cut the insulated wire,
After that, a method for cutting the insulated coated electric wire to a fixed size and extracting the conductor from the terminal portion of the cut electric wire at the above-mentioned cut line. 2. The method according to claim 1, wherein the exposed conductor is twisted during stripping of the terminal portion covering layer. 3. Use of the cutter for cutting an insulated wire.
3. Cut and cut a fixed length of the insulated wire according to claim 1 or 2.
Conductor exit method.