JPH06101889B2 - How to strip off electric wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a method for stripping a coating of an intermediate portion of a coated electric wire.

[Conventional technology]

As a method of stripping the coating of the middle portion of the coated electric wire, there is disclosed in
As disclosed in Japanese Patent No. 61-58412, by sandwiching a covered electric wire with two sets of stripper blades, two circumferential cuts are made in the covering of the covered electric wire, and then two circumferential directions are made. The slit between the cuts makes one or more axial cuts, and then two sets of stripper cuts, each having a circumferential cut, are moved closer to each other along the coated wire to make a circumferential cut. There is a method in which the coating between them is torn off from the other coating and the coating between the circumferential cuts is peeled off.

[Problems to be solved by the invention]

However, in the above-mentioned conventional method for stripping the coating of the electric wire, two sets of stripper blades for making circumferential cuts are required at two locations of the coating, and since they must be brought close to each other at the time of stripping, the structure is complicated. In addition to the above, there is a drawback that the operation is difficult and the adjustment is troublesome when the size of the covered electric wire is changed. Also, since the axial cut by the slit blade is inserted with the two sets of stripper blades holding the electric wire, both ends of the axial cut cannot be completely reached to the circumferential cut, and the slit can be cut. Even if the stripper blades are moved closer to each other, the coating between the circumferential cuts may remain connected in the circumferential direction at both ends of the axial cut, sometimes requiring manual stripping of the coating, There was a drawback that the work efficiency was poor and the process could not be speeded up. The present invention has been proposed in view of the above-mentioned conventional drawbacks, has a simple structure and is easy to operate, and is easy to adjust even if the size of the covered electric wire changes, and removes the coating between the circumferential cuts. It is intended to provide a method of stripping an electric wire coating that can be surely and smoothly performed and that can improve work efficiency by speeding up the process.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention sandwiches both ends of a coated electric wire with clamps to apply tension, and then makes one circumferential notch at one position of the coating with a stripper blade, and then a slit blade. After making an axial cut with one circumferential cut as the start or end on the
By making the other circumferential cut at the end of the axial cut of the coating with the stripper blade, by moving the stripper blade as it is toward the one circumferential cut,
It is characterized in that the coating between the notches in both circumferential directions is peeled off.

[Action]

Since the coating stripping method of the present invention is designed to strip the coating of the intermediate portion of the coated wire as described above, the circumferential cuts made in two places of the coating are made by one set of stripper blades. The axial cuts can be made by the slit blades without the stripper blades getting in the way, so that both circumferential cuts are surely brought into contact with both ends of the axial cuts. Therefore, in this state, when the stripper blade with the other circumferential notch is moved toward the one circumferential notch as it is, the coating between the both circumferential notches opens the axial notch. It will be stripped and fall.

〔Example〕

Hereinafter, the present invention will be specifically described based on the embodiments shown in the drawings.

FIG. 1 is a process explanatory view of an electric wire coating stripping method showing an embodiment of the present invention.

In the figure, 1 is a covered electric wire, 2 is a clamp, 3 is a stripper blade, and 4 is a slit blade.

In order to remove the coating of the intermediate portion of the covered electric wire 1, first, as shown in FIG. 1 (A), the covered electric wire 1 is inserted into the facing interval of the clamp 2, the stripper blade 3, and the slit blade 4. Next, as shown in (B), both ends of the covered electric wire 1 are clamped by the clamps 2 and moved outward to apply tension to the covered electric wire 1. Next, as shown in (C), one circumferential cut r _{1 is made at} one position of the coating by the stripper blade 3.
Put in. Next, as shown in (D), the stripper blade 3 is moved away and the slit blade 4 is moved closer. Next (E)
As shown by, the axial cut s terminating at _one circumferential cut r ₁ of the coating by the slit blade 4 (may be the start end)
Put in. Next, as shown in (F), the other circumferential cut r ₂ is made at the end of the axial cut s of the coating by the stripper blade 3. Next, as shown in (G), the stripper blade 3 is moved as it is toward _one circumferential cut r _1, and the coating m between the circumferential cuts r _{1 and} r ₂ is peeled off.
Next, as shown in (H), after the stripper blade 3 is moved away, the clamp 2 is released. Above (A) → (B) →
Through the steps of (C) → (D) → (E) → (F) → (G) → (H), the coating m at the intermediate portion of the coated electric wire 1 is peeled off, and the inner core wire 1 is exposed. become.

Next, FIG. 2 is a plan view of a set of slit blades, FIG. 3 is a side view thereof, and FIG. 4 is a front view thereof.

Each slit blade 4 has a guide plate 41 on both side surfaces thereof and a long hole 42.
The guide plate 41 is detachably attached by a bolt 43 engaged in the position adjustment.
And has a semi-circular stripper hole 45, and when a pair of slit blades 4 are brought close to each other, the covered electric wire 1 is guided to the C-shaped opening 44 and guided into the semi-circular stripper hole 45. Therefore, it is positioned and held here. or,
A stopper groove 46 that is aligned with the stopper hole 45 is horizontally provided on the front surface of the slit blade 4, and a slit blade 47 that is protruded by the thickness of the coating is horizontally provided at the center of the stopper groove 46. It has been planted. Further, the pair of slit blades 4 are shifted to the left and right by the thickness thereof so that the guide plates 41 facing each other do not collide with each other, and a concave groove for letting the tip of the guide plate 41 of the other side escape is provided on the facing surface. 48
Is provided.

Next, FIG. 5 is a plan view of a set of stripper blades,
The figure is its side view, and FIG. 7 is its front view.

On each side of each stripper blade 3, the same guide plate 31 as the guide plate 41 of the slit blade 4 is attached in the same manner, and each part 41, 42, 43, 44, 4 of the stripper blade 3 is attached.
The parts corresponding to 5,48 are given the reference numerals 31, 32, 33, 34, 35, 38, and the description thereof will be omitted. However, there is no stopper groove 46 or slit blade 47 on the front of the stripper blade 3, and the guide plate
A stripper plate 36 having a semi-circular stripper blade 37 is provided on the side opposite to the plate 31 in the same manner as the guide plate 31 by bolts 32.
Installed by.

Next, FIG. 8 is a plan view of a pair of clamps, FIG. 9 is a side view thereof, and FIG. 10 is a plan view thereof.

Each clamp 2 is provided with an uneven groove 21 in the vertical direction on the opposite surface thereof, and the covered electric wire 1 clamped by the uneven groove 21 is stably held. Next, FIG. 11 shows a circumferential cut r when a work is performed along the steps (A) to (H) shown in FIG. 1 using the clamp 2, the stripper blade 3, and the slit blade 4. FIG. 1 is a perspective view showing a positional relationship between ₁ , r ₂ and an axial cut s.
Both ends of each are surely cut to reach circumferential cuts r ₁ and r ₂ , respectively. The clamp 2, the stripper blade 3, and the slit blade 4 move in the direction of approaching each other and in the direction of moving away from each other, and also in the lateral direction, all of which can be performed by a cylinder operation.

Further, in the embodiment shown in FIG. 1, the stripper blade 3 and the slit blade 4 are designed so that they can be integrally moved laterally together, but they can be moved independently. Good. Further, in the present embodiment, the axial cut is made with one circumferential cut as the end, but it is also possible to make the axial cut so that the one circumferential cut becomes the starting end.

In addition, clamp 2, stripper blade 3, slit blade 4
The structure of is not limited to the structure shown in FIGS. 2 to 10, and the design can be freely changed as necessary, and
The guide plates 31, 41, the stripper plate 36, the slit blade 47, etc.
It goes without saying that it can be appropriately selected according to the thickness of the electric wire.

〔The invention's effect〕

As described above in detail, according to the present invention, one set of stripper blades can make circumferential cuts at two positions of the coating, and the axial cuts are caused by the slit blades that interfere with the stripper blades. Since it can be inserted without making it, both circumferential cuts can be made by making sure contact with both ends of the axial cut, so the stripper blade with the other circumferential cut can be directly inserted into one circumferential cut. The coating between both circumferential cuts can be peeled off easily and reliably simply by moving it inward, the structure is simple and easy to operate, the peeling is smooth,
It is possible to provide a practically extremely effective coating stripping method that can speed up the process and can significantly improve the work efficiency.

[Brief description of drawings]

1 (A) to 1 (H) are process explanatory views of a method for stripping an electric wire coating showing an embodiment of the present invention, FIG. 2 is a plan view of a pair of slit blades, and FIG. 3 is a side view thereof. FIG. 4 is a front view thereof, FIG. 5 is a plan view of a set of stripper blades, FIG. 6 is a side view thereof, FIG. 7 is a front view thereof, and FIG. 8 is a plan view of a set of clamps. 9 is a side view thereof, FIG. 10 is a front view thereof, and FIG. 11 is a perspective view showing a relationship between a circumferential cut and an axial cut. 1 ...... covered wires, 2 ...... clamp, 3 ...... stripper blade, 4 ...... slit blade, r ₁ ...... one circumferential cut, r ₂ ...... other circumferential cuts, s ...... axis Notch, m ... Stripped coating, l ... Core wire, 21 ... Uneven groove, 31,41 ... Guide plate, 32, 42 ... Long hole, 33, 43 ... Bolt, 34, 44 ... C-shaped opening, 35, 45 ... stopper hole,
36 …… stripper plate, 46 …… stopper groove, 37 …… stripper blade, 47 …… slit blade, 48 …… concave groove.

Claims (1)

[Claims] 1. A coated wire is clamped at both ends by a clamp to apply tension and then covered with a stripper blade.
Make one circumferential cut at the place, then make an axial cut with the slit blade as one end or the end of the circumferential cut in the coating, and then use the stripper blade at the end of the axial cut of the coating. A coating of an electric wire, characterized in that the other circumferential cut is made, and the stripper blade is moved toward the one circumferential cut as it is, thereby stripping the coating between both circumferential cuts. Stripping method.