JP2000295728A - Covering stripper for large diameter sheathed wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a sheath stripper with which anybody can strip the sheath of a large diameter wire sheath a predetermined length easily even in a narrow working space. SOLUTION: A sheath stripper includes a pair of upper and lower wire receiving element 2 which have respective recessed surfaces 2a with semi-circular cross-sections which accommodate the predetermined length of the circumference of a sheath wire 10. One of the wire receiving elements 2 is fixed to a frame and the other is connected to a pressure cylinder which is incorporated in the frame so as to press the connected receiving element against the opposite receiving element. Further, pairs of left and right semi-circular blades 3 by which the covering 11 of the sheath wire 10 is cut in a circumferential direction and straight blades 4 which are formed between the left and right semi-circular blades 3 and cut the sheath 11 of the sheath wire 10 in the direction of the wire axis are provided on the respective wire receiving elements 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for connecting a branch wire to a large-diameter covered electric wire buried in a common groove or the like.
The present invention relates to a coating stripping tool used to cut and remove a coating of a coated electric wire by a predetermined length.

[0002]

2. Description of the Related Art Generally, there are many trunk-coated electric wires buried in a common groove or the like having a large diameter of 30 mm or more. Conventionally, when a branch wire is connected to this coated electric wire, the electric wire coating is cut and removed by a predetermined length with an electric knife or the like. However, such a large-diameter electric wire coating is durable and hard. Since it is formed by layer coating, the work is difficult and dangerous and requires careful work, and the blade is easily spilled. Especially in a narrow space such as a common groove, the knife is rotated around the electric wire. Due to the small space, stripping work was very troublesome.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a coating capable of easily peeling a coating of a large-diameter electric wire over a predetermined length even in a narrow place without using a knife such as a knife. The main purpose is to provide a peeling tool with a simple configuration.

[0004]

In order to achieve the above object, the present invention takes the following technical measures. That is, the wire stripping and stripping tool according to the present invention includes a pair of upper and lower wire receiving members 2 and 2 having a concave surface 2a having a semicircular cross section for receiving the peripheral surface of the coated wire 10 over a predetermined length. One of the electric wire receiving members 2 and 2 is fixed to the frame 1, and the other is connected to a pressure cylinder 5 incorporated in the frame 1 so as to be capable of being crimped toward a pair of electric wire receiving members. A pair of right and left semicircular blades 3, 3 for cutting the covering 11 of the covered electric wire 10 along the circumferential direction at predetermined intervals in the axial direction of the electric wire.
And a straight blade 4 formed linearly across the left and right blades 3 and 3 to cut the coating 11 of the coated electric wire 10 along the electric wire axis direction.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The electric wire receiving members 2 and 2 are preferably detachably attached to a frame 1. Thereby, it is possible to select and attach the wire receiving members respectively adapted to the coated wires having different diameters.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 7 show an embodiment of a coating stripping tool according to the present invention. The frame 1 holds a pair of upper and lower electric wire receiving members 2 and 2 each having a concave surface 2a having a semicircular cross section for receiving a semicircular surface of the covered electric wire 10 over a predetermined length.

[0007] Either one of the wire receiving members 2 and 2
For example, the upper wire receiving member 2 is fixed to the frame 1 and connected to the pressure cylinder 5 incorporated in the frame 1 so that the lower wire receiving member 2 can be moved and crimped toward the upper wire receiving member to be paired. I have. This pressure cylinder 5
Is operated by a fluid pressure such as hydraulic pressure or air, and is provided with a joint plug 7 provided on the side wall surface of the frame.
, A fluid pipe 5 from a pressure source installed outside is connected and operated.

Each of the electric wire receiving members 2 has a pair of right and left semicircular blades 3 and 3 for cutting the coating 11 of the coated electric wire 10 along the circumferential direction at predetermined intervals. The insulated wire 10 formed linearly over the bodies 3 and 3
And a straight blade 4 that cuts the coating 11 along the axial direction of the electric wire. In the drawings, reference numerals are portable handles.

In using the above-mentioned coating stripping tool,
First, as shown in FIGS.
After the covered electric wire 10 is inserted between the electric wire receiving members 2 and 2 in a state where the electric wire is open, the pressure cylinder 5 is actuated to raise the lower electric wire receiving member 2 as shown in FIG. The coated electric wire 10 is strongly crimped between the members 2 and 2. By this crimping, the covering 11 of the covered electric wire 10 is cut in a circumferential direction at a predetermined pitch by a pair of right and left semicircular blade bodies 3 and 3 and, at the same time, covered by the upper and lower straight blades 4 as shown in FIG. The piece 11a is divided into two pieces in the axial direction of the electric wire and separated from the core wire 12. Therefore, if the upper and lower electric wire receiving members 2 and 2 are opened up and down, the covering piece 1 which is easily cut can be obtained.
1a can be separated and removed.

The semicircular blades 3 and 3 and the straight blade 4 are, of course, formed to have a sharp tip to improve the cutting performance. As shown in FIG. 8, the cutting edge may be formed in a saw blade shape to enhance the cutting effect. Further, it is preferable that the electric wire receiving members 2 and 2 are detachably attached to the respective supporting base bodies. Thereby, it is possible to select and attach the wire receiving members having the sizes adapted respectively to the coated wires having different diameters.

Although the representative embodiment of the present invention has been described above, the present invention is not necessarily limited to the above-described embodiment structure, but may be appropriately changed within a range having the constituent elements and the effects. Of course, it can be implemented.

[0012]

Since the present invention is constructed as described above, it is possible for anyone to easily coat a large-diameter covered electric wire which is difficult to peel over a predetermined length without using a knife such as an electric knife. In addition, the separation and removal can be performed safely and securely in a small operation space, which has a great effect that the rationalization of the branch connection work in a narrow area such as a common groove can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a coating stripper according to the present invention.

FIG. 2 is a side view of the coating stripping tool.

FIG. 3 is an exploded perspective view showing a main part of the coating stripping tool.

FIG. 4 is a partial cross-sectional front view showing a process of cutting and peeling the coating of the coated electric wire.

FIG. 5 is a longitudinal sectional view in FIG. 5;

FIG. 6 is a partial cross-sectional front view showing a state where upper and lower electric wire receiving members are crimped from the state of FIG. 4;

7 is a partial cross-sectional front view showing a state where the electric wire receiving member is opened from the state of FIG. 6;

FIG. 8 is a front view of a main part showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Electric wire receiving member 2a Semicircular concave surface 3 Semicircular blade body 4 Straight blade 5 Pressure cylinder 6 Fluid pipe 7 Joint plug

Claims (3)

[Claims] 1. A pair of upper and lower wire receiving members (2) having a concave surface (2a) having a semicircular cross section for receiving a peripheral surface of a covered wire (10) over a predetermined length. Member (2),
(2) One of the frames is fixed to the frame (1), and the other is crimped toward the pair of wire receiving members.
(1) is connected to a pressure cylinder (5) incorporated therein, and the respective wire receiving members (2) are further covered with a covered wire (10) at predetermined intervals in the wire axis direction. ) Along the circumferential direction, and a pair of left and right semicircular blades (3), (3), and a covering (11) of a covered electric wire (10) formed linearly across these left and right blades. Straight blade that cuts along the wire axis direction
(4) A large-diameter coated wire stripping tool comprising: 2. The electric wire receiving member (2), wherein (2) is a frame (1).
The stripping tool for a large-diameter coated wire according to claim 1, wherein the stripping tool is detachably incorporated in the wire. 3. A joint plug (7) for connecting an external pressure fluid pipe (6) to the pressure cylinder (5).
The coating stripper for a large-diameter coated electric wire according to claim 1, wherein the coating strip is provided on the frame (1).