JPH0736662B2 - Wire stripping tool - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool which is used, for example, at the end of a manipulator and is hooked to a live overhead wire during construction for connecting a branch line to the overhead wire. The present invention relates to a tool for removing the coating and then polishing the surface thereof in order to ensure electrical connection with the branch line.

[0002]

2. Description of the Related Art Conventionally, as this type of tool, for example, an electric wire stripping / polishing tool described in Japanese Patent Application Laid-Open No. 2-246714 has been known. This tool is used by attaching it to the tip of the robot's arm. It takes in the electric wire in the first rotor held in the housing, rotates this rotor, and uses the cutter attached to this to rotate the electric wire. After stripping off the coating, the second rotor is inverted and the electric wire is polished by a polishing machine attached to the second rotor. When stripping the wire coating with the cutter, move the tool in the axial direction of the wire by a predetermined distance with the robot arm.
Make the cutter spiral around the wire.
Further, when the electric wire is polished by the grinder, this time, the tool is moved in the opposite direction for a predetermined distance to rotate the grinder spirally around the electric wire.

[0003]

In the above conventional wire stripping / polishing tool, it is necessary to rotate the cutter and the grinder in a spiral shape around the wire, so that the wire should be fixed at a fixed position with respect to the wire. It is impossible to peel and polish. The operation of moving the tool in the axial direction with respect to the electric wire must be performed by operating the robot arm. This operation is not only a hassle,
There is a difficulty that requires skill to adjust the moving speed. Therefore, it is an object of the present invention to provide a simple tool having a structure capable of peeling and fixing the electric wire in a fixed position and automatically performing a polishing operation in sequence.

[0004]

In the present invention, in order to solve the above problems, a housing 3 having a substantially cylindrical enclosing space 6 attached to the frame 2 and partially open, and an enclosing space 6 are provided. A drive gear 9 which is rotatably attached to the housing 3 so that at least a part of it is exposed to the outside, and which is driven by the motor M to rotate forward and backward, and an electric wire W can be held inside by opening and closing along the axial direction. It is divided into two as possible and is rotatably accommodated in the cylindrical enclosing space 6 of the housing 3 by the drive gear 9. The electric wire W is covered by the cutter 20 around the electric wire W as it rotates in one direction. And a substantially cylindrical rotor 4 capable of stripping C, the rotor 4 is arranged so as to be movable in the radial direction thereof and to come into contact with the outer circumference of the stripped electric wire W. Of the polishing brush 23 biased toward the axis of the rotor 23, and at a position where the brush 23 is pushed outward in the radial direction of the rotor 4 and does not come into contact with the outer circumference of the electric wire W, the brush 23 engages with the inside thereof. And a trip mechanism 27 that senses the rotation of the rotor 4 in the other direction and releases the engagement of the latch mechanism 26 with the brush 23 to allow contact with the electric wire W. Then, a wire stripping tool was constructed.

[0005]

For example, the tool 1 according to the present invention is attached to the tip of the manipulator, and the rotor 4 is opened and brought to a predetermined position of the overhead wire W, and the wire W is inserted into the rotor 4. The brush 23 is pushed inward in the radial direction of the rotor 4 so as not to come into contact with the outer circumference of the electric wire W and held by the latch mechanism 26 in advance. Then, while the motor M is started to rotate the rotor 4 in the housing 3, the motor M is closed to hold the electric wire W in the rotor 4. Further rotor 4
Cutter 20 attached to this by rotating the
The coating C of the electric wire W is stripped off over a predetermined width. When the rotor 4 has rotated a predetermined number of times and the coating C has been stripped off, the rotor 4 automatically rotates in the opposite direction. When the tripping mechanism 27 detects this reversal and operates the latch mechanism 26 to release the brush 23, the brush 23 comes into contact with the electric wire W by an urging force. In this state, the rotor 4 is rotated a predetermined number of times to polish the electric wire W. During this time, the tool 1 may remain fixed to the electric wire W.

[0006]

An embodiment of the present invention will be described with reference to the drawings. 1 is a front view in which a part of the wire stripping tool is cut away, FIG. 2 is the same side view, FIG. 3 is a perspective view of the rotor, FIG. 4 is a plan view of the rotor, FIG. 5 is a side view of the rotor, and FIG. Is a perspective view of the operating mechanism of the brush, and FIG. 7 is an explanatory view of the operating mechanism of the brush.

The skin peeling tool 1 comprises a frame 2 which can be mounted on a manipulator, a housing 3 attached to the frame 2, and a rotor 4 which is rotatably accommodated in the housing 3. The housing 3 has a substantially cylindrical shape and is provided with an insertion opening 5 for the rotor 4 that is opened approximately 90 °, and is also provided with a wrapping space 6 for the rotor 4 inside. The peripheral wall 3c of the holding space 6 has an arcuate cross section. Between both side walls 3a and 3b of the housing 3,
A drive shaft 7 is installed so as not to be exposed in the holding space 6. The sprocket 8 is fixed to one end side of the drive shaft 7 outside the side wall 3a, and the other end side is positioned inside the 3b so that a part of the sprocket 8 is exposed to the holding space 6. The drive gear 9 is fixed. A motor M is fixed to the frame 2 below the housing 3, and an output shaft 10 of the motor is installed in parallel with the drive shaft 7. A sprocket 11 is fixed to one end of the output shaft 10, and a chain 12 is wound around the sprocket 11 and the sprocket 8 of the drive shaft 7. Therefore, the drive gear 7 is driven by the motor M to rotate forward and backward.

The rotor 4 has a substantially cylindrical shape and has a space 4a at the center thereof through which the electric wire W is penetrated. The rotor 4 is divided into two along the axial direction so that the electric wire W can be held in the space 4a. They are hinged so that they can be opened and closed on one side.
Therefore, the rotor 4 is composed of the main body 13 which is one half and the lid 14 which is the other half. Body 1
3 and one end side of the lid body 14, a gear piece 16 which is coupled to each other in a closed state to form a circular passive gear 15,
17 is fixed. Further, magnets 18 and 19 which are attracted to each other are embedded in a joint portion between the main body 13 and the lid body 14. An opening 2 for discharging the coating C1 of the peeled wire W is provided between the sides of the main body 13 and the lid 14 on the mutual hinge side.
1 is formed. The cutter 20 is fixed to the side of the lid 14 on the hinge side. The cutter 20 has a rectangular flat plate shape, is provided with a blade 20a on one side, is fixed at a predetermined angle with respect to the radial direction of the rotor 4, and is fixed when the rotor 4 rotates in one direction. This blade 20a bites into the coating of the electric wire, and the electric wire coating of a predetermined width can be cut off at once. At both ends of the blade 20a,
A standing blade 20b is formed which stands up slightly from the surface. The electric wire coating C to be cut off by the standing blade 20b
Both ends of the width can be cut smoothly.

In the main body 13, with the electric wire W held in the rotor 4, the polishing brush 2 is movable in the radial direction between a position in contact with the outer periphery of the electric wire W and a position in which the electric wire W is separated from the outer periphery.
3 is provided. That is, guide bolts 24 penetrating both sides of the polishing brush 23 are screwed into the main body 13, and a spring 25 is inserted between the brush 23 and the main body 13. Therefore, the brush 23 is guided by the guide bolt 24 to be movable, and is biased toward the axial center of the rotor 4 by the spring 25 so as to come into contact with the outer circumference of the electric wire. Further, the main body 13 has a latch mechanism 26 that engages with the brush 23 and prevents the brush 23 from moving inward at a position where the brush 23 is pushed outward in the radial direction of the rotor 4 and does not contact the outer periphery of the electric wire W. , A tripping mechanism 27 that senses the rotation of the rotor in the other direction and releases the engagement of the latch mechanism 26 with the brush 23 to allow contact with the electric wire.

The latch mechanism 26 includes an engagement shaft 28 projecting from the brush 23, a latch shaft 29 provided in the main body 13 so as to advance and retract in the axial direction, and a spring 30 for urging the latch shaft 29 in the forward direction. Consists of. The engagement shaft 28 includes a slit 28a, and the flat portion 29a of the latch shaft 29 is attached to the slit 28a.
Is inserted movably in the axial direction. Latch shaft 29
Is a right-angled engagement step portion 2 protruding toward the flat portion 29a toward the base end side.
9b, on the other hand, the engagement shaft 28 has, on one of its proximal ends, an engagement recess 28b with which the engagement step 29b of the engagement shaft 28 engages when the latch shaft 29 is in the forward position. . The engagement shaft 28 cannot move in the axial direction when the engagement step portion 29b is engaged with the engagement recess 28b.

The tripping mechanism 27 comprises a tripping shaft 31 installed in the main body 13, and rollers 33 mounted on both ends of the tripping shaft 31 via one-way clutches 32. That is, the roller 33 independently rotates freely in one direction and rotates integrally with the trip shaft 31 in the other direction. Roller 33
Protrudes slightly from the outer peripheral surface of the main body 13, and when the rotor 4 rotates in the housing 3,
It rolls on the inner peripheral surface of the peripheral wall 3c. The trip shaft 31 is provided with a flat portion 31a in the middle, and the tip of the latch shaft 29 is in contact with the flat portion 31a at a right angle. Therefore, the latch shaft 29 moves back and forth in the axial direction each time the trip shaft 31 rotates 90 degrees forward and backward.

Inside the peripheral wall 3c of the housing 3, a scraping protrusion 3d for removing the stripped coating C from the rotor 4 is provided. A groove 13a for receiving the scraping protrusion 3d is formed on the outer periphery of the central portion of the main body 13 of the rotor 4. Therefore, when the rotor 4 rotates, the protrusion 3d is located near the outer periphery of the lid 14 or in the groove 13a.
The fragment C1 of the coating C attached to the outer periphery of the lid 14 can be forcibly scraped off by moving inside.

The tool 1 according to this embodiment is used by being attached to the tip of a manipulator installed in a bucket of an aerial work vehicle, for example. With the main body 13 and the lid 14 of the rotor 4 open, bring this to the predetermined position of the overhead wire W,
Insert the electric wire into the rotor 4. The brush 23 is pushed inward in the radial direction of the rotor 4 and held by the latch mechanism 26 so that the brush 23 does not come into contact with the outer circumference of the electric wire W in advance.
Then, when the motor M is started, the output shaft 10, the sprocket 11, the chain 12, the sprocket 8, the drive shaft 7, and the gear 9 sequentially rotate. In FIG. 2, when the gear 9 rotates counterclockwise, the main body 13 of the rotor 4 rotates along the inner circumference of the inner peripheral wall 3 of the housing 3 together with the gear piece 16 meshing with the gear 9, and the lid 14 opens. Is pulled into the holding space 6 from the inside, and at the same time, the lid 14 is pushed by the peripheral wall 3c and joined to the main body 13, and the electric wire W is provided inside the rotor 4.
Is hugged. The main body 13 and the lid 14 include a magnet 18,
Since they are mutually attracted at 19, even when the lid 14 comes to the position of the opening 5, the space between the lid 14 and the main body 13 does not open. When the rotor 4 further rotates, the cutter 20 attached to the lid 14 bites into the coating C of the electric wire W and makes one rotation around the electric wire W, whereby the coating C is peeled off over a predetermined width. The stripped off piece C1 has a substantially C-shaped cross section, and is attached so as to grip the outside of the lid 14 due to its elasticity. If the rotor 4 continues to rotate in this state,
The fragment C1 is drawn between the rotor 4 and the housing 3 and becomes inoperable. Therefore, the rotation of the rotor 4 causes the protrusion 3d to relatively move in the vicinity of the outer periphery of the lid body 14 and to move the lid body 14d.
The fragment C1 of the coating C adhering to the outer periphery of the is forcibly scraped off. During the rotation of the rotor 4 so far, the roller 33 is
The inner wall of the peripheral wall 3c of the housing 3 rolls in one direction,
Since the trip shaft 31 idles with respect to the trip shaft 31 and the trip shaft 31 is stationary at the position shown in FIG. 7A, the latch shaft 29 engages with the engagement shaft 28 of the brush 23 and the brush 23.
Is held in the retracted position. When the rotor 4 has rotated a predetermined number of times to complete the stripping of the coating C, the rotor automatically rotates in the opposite direction by a predetermined angle. By this reversal, the roller 33 rotates in the opposite direction, but this time, the one-way clutch 32 is connected to the shaft 31, and the shaft 31 rotates integrally.
As shown in FIG. 7B, when the shaft 31 rotates, the flat portion 31a pushes the latch shaft 29 in the axial direction, and when the shaft 31 rotates by 90 °, the engagement step portion 29b is disengaged from the engagement recess 28b. The brush 23 is pushed out by the spring 25 and pressed against the surface of the electric wire W whose coating has been stripped. After the brush 23 reaches this state, the motor M reverses and the rotor 4 rotates a predetermined number of times in the opposite direction, during which the surface of the electric wire W is polished by the brush 23. During this time, the tool 1 may remain fixed to the electric wire W. When the polishing of the electric wire W is completed, the motor M is stopped with the lid 14 at the position of the opening 5 of the housing 3, and the manipulator is operated to pull the tool 1 away from the electric wire W. Then, the space between the lid 14 and the main body 13 is opened against the magnetic force, and the tool 1 can be separated without any trouble. The motor M is provided with an encoder, and its rotation direction and rotation speed are controlled.

[0014]

As described above, according to the present invention, the housing 3 having the substantially cylindrical enclosing space 6 attached to the frame 2 and partially opened, and at least a part of the enclosing space 6 exposed. The drive gear 9 is rotatably attached to the housing 3 and is driven to rotate in the forward and reverse directions by the motor M, and the electric wire W can be held inside. , The housing 3 is rotatably housed in the cylindrical enclosing space 6 by the drive gear 9, and the cover 20 of the wire W can be stripped around the wire W by the cutter 20 as the drive gear 9 rotates in one direction. The rotor 4 having a substantially cylindrical rotor 4 that can be moved toward the axial center of the rotor 4 so as to be movable in the radial direction thereof and to come into contact with the outer periphery of the stripped electric wire W. Energized The polishing brush 23 and the latch mechanism 26 that engages the brush 23 and prevents the brush 23 from moving inward at a position where the brush 23 is pushed outward in the radial direction of the rotor 4 and does not contact the outer periphery of the electric wire W. And a tripping mechanism 27 that senses the rotation of the rotor 4 in the other direction and releases the engagement of the latch mechanism 26 with the brush 23 to permit contact with the electric wire W, thereby forming the electric wire stripping tool. It is possible to provide a simple tool having a structure capable of peeling the electric wire while fixing it at a fixed position with respect to the electric wire and automatically performing the polishing operation sequentially.

[Brief description of drawings]

FIG. 1 is a front view in which a part of a wire stripping tool is cut away.

FIG. 2 is a side view in which a part of the wire stripping tool is cut away.

FIG. 3 is a perspective view of a rotor.

FIG. 4 is a plan view of a rotor.

FIG. 5 is a side view of the rotor.

FIG. 6 is a perspective view of the operating mechanism of the brush.

FIG. 7 is an explanatory diagram of an operating mechanism of a brush.

[Explanation of symbols]

 1 Wire Stripping Tool 2 Frame 3 Housing 4 Rotor 5 Opening 6 Enclosing Space 9 Drive Gear 13 Main Body 14 Lid 15 Gear 16 Gear Piece 17 Gear Piece 20 Cutter 23 Brush 25 Spring 26 Latch Mechanism 27 Tripping Mechanism M Motor W Electric Wire C coating

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 591265633 Kayo Denki Kogyo Co., Ltd. 2-6 Hamamatsucho, Minato-ku, Tokyo (71) Applicant 000005290 Furukawa Electric Co., Ltd. 2-6 Marunouchi, Chiyoda-ku, Tokyo No. 1 (71) Applicant 391011386 Japan Burnday Co., Ltd. 3-1, Ekimaehonmachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 1 (71) Applicant 000144108 Saneisha Co., Ltd. 5-2-1 Ebara, Shinagawa-ku, Tokyo (72) Inventor Masaaki Ito 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Company, Inc. (72) Inventor Noriyuki Kaihara 4-83-3 Shibaura, Minato-ku, Tokyo Kandenko Co., Ltd. (72) Inventor Kasai Kouji Yamanashi Prefecture, 810 Nakatame, Tamago-cho, Nakakoma-gun Sanwa Techchi Co., Ltd. Kofu Factory (72) Inventor Koichi Machida 1 Kiba, Koto-ku, Tokyo 5-1 Fujikura Electric Wire Co., Ltd. (72) Inventor Kazumi Wakamatsu 1-8-1, Daisaku Sakura City, Chiba Prefecture Stock Company Kayo Electric Industry Co., Ltd. Sakura Factory (72) Inventor Yoshiaki Abe Chiyoda, Tokyo 2-6-1 Marunouchi Ward Furukawa Electric Co., Ltd. (72) Inventor Akira Tanabe 3-26-33 Takanawa, Minato-ku, Tokyo Japan Berndy Co., Ltd. (72) Tomoo Obata Oyama City, Tochigi Prefecture Nishi Kuroda 87 Saneisha Research Laboratory (56) Reference JP-A-52-111684 (JP, A) JP-A-56-141708 (JP, A) JP-A-2-246714 (JP, A) Showa 63-187517 (JP, U) Actual flat 4-2916 (JP, U) Actual flat 4-61409 (JP, U)

Claims (1)

[Claims] 1. A housing which is attached to a frame and has a substantially cylindrical enclosing space which is partially opened, and a housing which is rotatably attached to the housing so that at least a part is exposed in the enclosing space, and is driven by a motor. A drive gear that rotates in the forward and reverse directions and a drive gear that can be opened and closed along the axial direction so that the electric wire can be held inside and can be rotated by the drive gear in the cylindrical holding space of the housing. A rotor having a substantially cylindrical shape that can be accommodated and that can be stripped around the electric wire by a cutter when the electric wire is rotated in one direction. A polishing brush movably provided in a radial direction of the rotor between a contacting position and a separating position, and biased toward the axial center of the rotor so as to contact the outer circumference of the electric wire; , At the position where this brush is pushed radially outward of the rotor and does not contact the outer circumference of the wire, the latch mechanism that engages with the brush to prevent it from moving inward, and senses the rotation of the rotor in the other direction. And a tripping mechanism that releases the engagement of the latch mechanism with the brush to allow contact with the electric wire.