JPH05111121A - Method and apparatus for terminating electric cable - Google Patents

Abstract

PURPOSE:To reduce the number of working processes by a method wherein wire exposing blades and semi-stripping blades are simultaneously cut into a part of a cable to be exposed and a part of the cable where a sheath is to be remained respectively and the coated cable and the semi-stripping blades are moved at the same time to form an exposed part and then only the coated cable is moved to form a sheath- remained part in a conductor of the exposed part. CONSTITUTION:After a coated cable 1 is cut with cutting blades 12, cable exposing blades 13 and semi-stripping blades 14 are cut into the coated cable 1 simultaneously. Then, when the coated cable 1 is moved axially outwards, the semi-stripping blades 14 simultaneously move in the circumference direction against an energizing force of springs 16 together with a linear 15 along the movement of the coated cable 1 while it cuts into the insulating coating 8. The cable exposing blades 13, on the other hand, are secured to cutter holders 10, 11. Therefore, the coating 8a of a part to be exposed 3 is taken off by the exposing blades 13 and then a conductor 2 is exposed. After that, only the coated cable 1 is further moved outwards axially and then the coating 8b of a part where a sheath is to be remained 4 is moved by the semi-stripping blades 14 to a specified place of the conductor 2 of the exposed part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to cutting, peeling,
The present invention relates to a method for processing an end of an electric wire capable of performing a sheath leaving step at the same time, and an apparatus for performing the processing method.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, the insulating coating 8 at the end of the covered electric wire 1 is peeled off to expose the conductor 2 to form a wire lead portion 3 and the conductor 2 of the wire lead portion 3 is formed. The terminal processing of forming the sheath leaving portion 4 while leaving a part of the insulating coating near the tip end of the has been put to practical use. The sheath remaining portion 4 is provided in order to prevent the exposed conductor 2 from becoming loose, and to prevent rust in a portion to be crimped or solder-welded to the terminal.

By the way, in the above-mentioned terminal processing, in the first step, as shown in FIG. 9, a pair of upper and lower cutting blades 5 is used.
After cutting the covered electric wire 1 with a pair of upper and lower wire cutting blades 6, a cut is made in the inner end surface of the insulating coating 8 which becomes the wire drawing portion 3 of the cutting terminal, and then, as shown in FIG. 1
Are retracted from each other in the axial direction and moved in the direction, so that the conductor 2 is exposed by extracting the insulating coating 8a of the wire-out portion 3 with the wire-out blade 6.

Next, in the second step, as shown in FIG. 11, a pair of upper and lower semist blades 7 are used to make a notch in the inner end surface of the insulating coating which will be the sheath remaining portion 4, and then the coating is performed as shown in FIG. By moving the electric wire 1 in the axial direction retracting from the semi-st blade 7, the movement of the insulating coating 8b of the sheath remaining portion 4 is stopped by the semi-st blade 7, and the insulating coating 8b is moved to the tip of the conductor 2 of the wire-drawing portion 3. It is located in the vicinity.

[0005]

However, in the above-described conventional terminal processing, after the wire-drawing step is performed by the wire-drawing device, the sheath-leaving step is performed by another sheath-leaving apparatus, and two continuous steps are performed. However, there is a problem that the number of man-hours increases and the number of man-hours increases as well.

Therefore, an object of the present invention is to provide an electric wire terminal processing method and apparatus which can reduce the number of working steps by allowing the wire drawing and the sheath leaving to be performed by one apparatus in one step.

[0007]

In order to achieve the above object, a method of processing an end of an electric wire according to the present invention is to cut a covered electric wire with a cutting blade, and use a wire-drawing blade and a semi-st blade to wire the wire-out end portion of the cutting terminal. After making cuts on the inner end surface of the insulation coating that will be the sheath remaining part, move the cut coated electric wire and the semi-st blade in the axial direction, and remove the insulation coating from the wire extraction portion with the wire extraction blade to remove the conductor. It is characterized in that the insulating coating of the sheath-remaining portion is moved to a predetermined position of the conductor of the lead-out portion by exposing the exposed wire and then moving only the coated electric wire in the axial direction.

Further, in the electric wire terminal processing apparatus of the present invention, cutting blades for cutting the covered electric wire are respectively provided at the central positions of a pair of upper and lower cutter holders, and the above-mentioned covered electric wire is provided at both side positions of the respective cutting blades. Wire-cutting blades for making cuts are respectively provided on the inner end surfaces of the insulating coatings that serve as the wire-cutting portions of the cutting terminals. It is characterized in that semi-stit blades for cutting in the end face are provided so as to be movable in the axial direction, and stoppers for restricting a moving stroke of the semi-stit blades are provided at both side positions of the semi-stit blades, respectively.

[0009]

According to the method of processing an end of an electric wire of the present invention, the insulating coating of the lead-out portion and the sheath-remaining portion of the cutting end of the covered electric wire is cut at the same time by the lead-out blade and the semi-strike blade to form the covered electric wire and the semi-strand. When the blades are moved at the same time, the line-out portion is formed, and subsequently, when only the covered electric wire is moved, a sheath remaining portion is formed in the conductor of the line-out portion. Thereby, the wire drawing and the sheath leaving can be performed in one step.

Further, according to the electric wire terminal processing apparatus of the present invention, the pair of upper and lower cutter holders may be provided with the cutting blade, the wire-drawing blade and the stopper, and the semi-strike blade may be movably provided. And it becomes possible to make it compact.

[0011]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. As shown in FIG. 1, the terminal processing apparatus for the covered electric wire 1 includes a pair of upper and lower cutter holders 10 and 11. The cutter holders 10 and 11 are supported by a support mechanism (not shown) so as to approach or separate from each other in the vertical direction. The covered electric wire 1 is arranged between the cutter holders 10 and 11.

Cutting blades 12 and 12 for cutting the covered electric wire 1 in a direction perpendicular to the axis are fixed to central positions of the facing surfaces of the cutter holders 10 and 11, respectively.

Further, wire cutting blades 13 and 13 for forming wire drawing portions 3 at the end portions of the covered electric wire 1 are provided on both sides of the cutting blades 12 and 12 at predetermined intervals, respectively. , 11 fixed. The wire-cutting blade 13 on the side of the upper cutter holder 10 has a V-shaped blade portion for cutting the upper half of the insulating coating 8 of the coated electric wire 1, and the wire-cutting blade 13 of the lower cutter holder 11 has the insulating coating 8 of the insulating coating 8. It has a V-shaped blade portion for cutting the lower half, and these both blade portions can make an annular cut around the insulating coating 8.

Further, on both sides of the wire-stripping blades 13, 13, there are semi-cast blades 14, 14 for forming the sheath remaining portion 4 of the cutting end of the covered electric wire 1 in the cutter holders 10, 11. It is fixed to each of linear members 15, 15 which are movably supported inward and outward in the axial direction. The pair of upper and lower semist blades 14 has the same shape as that of the wire-drawing blade 13 and cuts the upper and lower sides of the insulating coating 8 respectively, and an annular cut can be made around the insulating coating 8 by these two blade portions.

Springs 16 and 16 are stretched on the linear members 15 and 15 on the upper cutter holder 10 side and the lower cutter holder 11 side, respectively, and the linear members 1 and 15 on the same cutter holder side are provided by the springs 16 and 16, respectively.
In a state in which 5 and 15 are relatively urged inward, they are positioned by abutting on the outer surface of the wire-drawing blades 13 and 13.

Furthermore, at the positions on both sides of the semi-st blades 14 and 14, the linear members 15 and 1 which are moved outward in the axial direction are provided.
Stoppers 17 and 17 are provided for restricting the outward movement stroke of each semi-cast blade 14, 14 with which the semi-blade 5 abuts. The stoppers 17 and 17 are bolts that are screwed to the bracket 18 and the screwing position is changed, whereby the outward movement strokes of the semi-st blades 14 and 14 can be adjusted.

In the above structure, as shown in FIGS. 1 and 4, the cutter holders 10 and 11 are separated from each other so that the covered electric wire 1 does not come into contact with the blades 12 to 14 and the cutter holders 10 and 11 are removed. Bring them closer. As a result, as shown in FIGS. 2 and 5, the coated electric wire 1 is cut by the cutting blade 12, and the covered electric wire 1 is cut by the wire take-out blade 13 and the semi-st blade 14.
The insulating coating 8 at the cutting end is cut at the same time at the end face portion which will be the wire-out portion 3 and the sheath remaining portion 4.

In this state, as shown in FIG. 6, when the covered electric wire 1 is moved outward in the axial direction, that is, in the direction away from each other, the semi-strike blade 14 is moved along with the movement of the covered electric wire 1.
Even if it bites into the notch of the insulation coating 8, linear 15
At the same time, they are simultaneously moved in the same direction against the biasing force of the spring 16. On the other hand, since the wire-drawing blade 13 is fixed to the cutter holders 10 and 11, the wire-drawing blade 1
At 3, the insulating coating 8a of the wire lead-out portion 3 is extracted and the conductor 2 is exposed. The insulating coating 8a naturally drops downward.

Further, when the covered electric wire 1 is moved outward in the axial direction, as shown in FIG. 3 and FIG.
Linear 15 comes into contact with the stopper 17 and the semi-st blade 1
Although the movement of 4 is restricted, when only the covered electric wire 1 is further moved outward in the axial direction, the semiconductive blade 14 causes the insulating coating 8b of the sheath remaining portion 4 to come to a predetermined position of the conductor 2 of the wire extending portion 3. Be moved. The position of the sheath remaining portion 4 can be adjusted by changing the moving stroke of the covered electric wire 1.

[0020] Thus, the wire drawing of the covered electric wire 1 and the leaving of the sheath can be performed in one step. Thereafter, when the cutter holders 10 and 11 are separated from each other, the semi-cast blade 14 is disengaged from the insulating coating 8b of the sheath remaining portion 4 and automatically returned to its original position by the urging force of the spring 16 to prepare for the next terminal processing cycle.

In addition, in a flat wire group in which a large number (for example, 30) of electric wires are pressure-bonded from both sides by an insulating holding sheet and arranged and held in parallel at a predetermined pitch, the insulating holding sheet together with the insulating coating of each electric wire, a cutting blade, It is possible to cut the wire with a wire-drawing blade and a semist blade, and to leave the wire and leave the sheath in a state where the wires are held in parallel by the insulating holding sheet.

[0022]

As is apparent from the above description, in the terminal processing method of the present invention, the insulating coating of the wire-extending portion and the sheath-remaining portion of the cutting end of the coated electric wire is cut at the same time by the wire-exposing blade and the semi-st blade. In this case, the coated electric wire and the semist blade are moved at the same time to form the wire lead-out portion, and subsequently only the coated electric wire is moved to form the sheath remaining portion in the conductor of the wire lead-out portion. Therefore, the wire drawing and the sheath leaving can be performed in one step, and the number of working steps is reduced. Further, the terminal processing apparatus of the present invention can be configured simply and compactly because the cutting blade, the line-out blade and the stopper are provided on the pair of upper and lower cutter holders, and the semi-strike blade is movably provided.

[Brief description of drawings]

FIG. 1 is a side view of a terminal processing device of the present invention.

FIG. 2 is a side view of the device of FIG. 1 when cutting and cutting.

3 is a side view of the device of FIG. 1 with a sheath left.

FIG. 4 is an enlarged view of a main part of each blade of FIG.

5 is an enlarged view of a main part of the blade shown in FIG. 1 during cutting and cutting.

FIG. 6 is an enlarged view of a main part of each blade in FIG. 1 when a line is drawn.

7 is an enlarged view of a main part of the blade of FIG. 1 when a sheath is left.

FIG. 8 is a side view of the terminal-processed covered electric wire.

FIG. 9 is an enlarged view at the time of cutting / cutting in the conventional first step.

FIG. 10 is an enlarged view of FIG. 9 when line drawing is performed.

FIG. 11 is an enlarged view of a conventional second step during cutting.

FIG. 12 is an enlarged view of FIG. 11 with the sheath left.

[Explanation of symbols]

 1 coated electric wire, 2 conductor, 3 lead wire portion, 4 sheath remaining portion, 8 insulating coating, 10 and 11 cutter holder, 12 cutting blade, 13 wire leading blade, 14 semi-cast blade and 17 stopper.

Claims (2)

[Claims] 1. A cutting blade is used to cut the covered electric wire, and a wire-cutting blade and a semi-st blade are used to make cuts in the insulating coatings that will be the wire-drawing portion and the sheath-remaining portion of the cutting terminal. By moving the blade in the axial direction, the fixed wire-drawing blade pulls out the insulating coating from the wire-exposed portion to expose the conductor, and then moves only the coated wire in the axial direction, leaving the sheath-remaining portion with the semi-strike blade. A method for processing an end of an electric wire, characterized in that the insulating coating of (1) is moved to a predetermined position of the conductor of the lead-out portion. 2. A cutting blade for cutting a coated electric wire is provided at a central position of a pair of upper and lower cutter holders, and an insulating coating serving as a lead-out portion of a cutting end of the coated electric wire is provided on both sides of each cutting blade. Wire cutting blades are provided on the inner end surface of the shaft, and at each side of the wire cutting blades, a semi-strike blade for cutting on the inner end surface of the insulating coating, which is the sheath remaining portion of the cutting end of the covered electric wire, is provided. A terminal processing device for electric wires, which is provided so as to be movable in any direction, and stoppers for restricting a movement stroke of each of the semi-st blades are provided at positions on both sides of each of the semi-st blades.