JP2007159268A - Cable sheath stripping tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable sheath stripping tool provided with a mechanism which suitably adjusts the depth of cut by a rotary blade in cutting and opening a sheath in either of the circumferential direction or the extended axis direction and of accurately guiding moving direction of the cutting edge. <P>SOLUTION: In this cable sheathe stripping tool 1, a rotary blade support 6 is held movably forward and backward by a grip portion 21, and two pairs of receiving rollers 3 facing the rotary blade support 6 are provided with a roughly groove-shaped cable receiving portion 23 integrally formed through an arm portion 22 with the grip portion 21. The two pairs of receiving rollers 3 make the rotating shafts orthogonal to the axial direction of a cable 9, thereby disposed by being spaced at an optimal distance in the axial direction of the cable 9. The circumferential surface of the receiving roller 3 is formed in a V shape. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tool for incising and peeling off a sheath (outer protective coating) when terminating a high-voltage power cable.

  Plastic cables such as cross-linked polyethylene insulated cables (CV cables) are the most widely used distribution cables for transporting high-voltage power. FIG. 9 is a cross-sectional view of a single-core cable 9 having a relatively simple internal structure. In order from the center side, a conductor 91 in which copper wires are bundled, an inner semiconductive layer 92, an insulator 93 made of cross-linked polyethylene, an annealed copper tape 94, a paper tape 95, a sheath made of polyvinyl chloride or heat-resistant polyethylene (outer protective coating) It is the structure which laminated | stacked 96 concentrically.

  In laying this type of high-voltage power cable (hereinafter simply referred to as “cable”), when connecting the end of the cable, the sheath 96 is cut in the circumferential direction and the extension axis direction with a blade such as an electric knife. Thus, it is necessary to turn off a part of the exposed paper tape 95 and the annealed copper tape 94, and to peel off a part of the insulator 93. At this time, if the surface of the annealed copper tape 94 is damaged by a blade, local heat is generated at the damaged portion due to the high-voltage current, the cable 9 is burned out, or a large potential difference generated between the grounded end and the non-grounded end is damaged. Serious accidents such as degradation of location tracking leading to dielectric breakdown. For this reason, workers who perform cable terminal processing are obliged to perform skill tests. However, it is difficult for a skilled worker to accurately incise a sheath made of a tough material.

As a tool used for incising a sheath at a cable laying site, tools described in Patent Documents 1 to 3, for example, are known in addition to an electric knife. In these tools, the cable is inserted into a substantially C-shaped cable gripping part provided integrally with the grip, and the tool is moved in the circumferential direction of the cable while pressing the cable with a rotary blade provided inside the cable gripping part. By rotating, the sheath can be incised in the circumferential direction at a certain depth. The rotary blade can be advanced and retracted in the radial direction of the cable by the support means provided in the grip, and the cutting depth can be adjusted. A plurality of guide rollers that are in contact with the peripheral surface of the cable are attached to the inside of the cable gripping portion to facilitate the rotation operation of the tool. Further, there is also known one in which the cutting direction of the rotary blade is rotated 90 degrees so that the cable inserted into the cable gripping portion can be cut also in the extension axis direction.
Japanese Utility Model Publication No. 55-64829 Japanese Utility Model Publication No. 55-98111 Japanese Patent Laid-Open No. 5-219619

  The conventional cable sheath stripping tool has the following problems.

  (A) The thickness of the sheath is not strictly uniform, and varies by several millimeters depending on the type of cable. In addition, even with a single continuous cable, the thickness of the sheath slightly changes depending on the position of incision. Even if the cutting depth of the rotary blade can be adjusted, it is not possible to see how far the cutting edge has reached when the rotary blade is bitten into the sheath, so the cutting edge position is at a depth that does not damage the soft copper tape. It is practically difficult to adjust this. Under such circumstances, a mechanism capable of accurately adjusting the cutting depth of the rotary blade is required according to the type and standard of the cable.

  (B) When the sheath is incised in the circumferential direction, the guide roller attached to the cable gripping part rotates in contact with the peripheral surface of the cable, but the cable itself is not a straight rigid body, and the tool is rotated. In addition, the tool itself may tilt irregularly with respect to the vertical cut surface of the cable. Then, the start end and the end of the circumferential incision line are often shifted. Under such circumstances, there is a need for a guide mechanism that can precisely match the start and end of the circumferential incision line and make the incision surface into a clean circle.

  (C) As an actual terminal processing operation, the incision size in the extension axis direction is longer than the incision in the circumferential direction, and a force for operating the tool is also required, which is difficult. However, the guide roller provided in the conventional tool has a rotation shaft attached in parallel to the cable shaft and rotates only along the circumferential direction of the cable. The guide function is not fully fulfilled. Cables are often curved, and when such cables are cut in the direction of the extension axis, the cut line often deviates from the cable axis. This is especially true when the cable is hardened in the cold season. Under such circumstances, a mechanism capable of accurately guiding the cutting edge in the direction of the extension axis of the cable is required.

  As described above, the present invention can appropriately adjust the cutting depth of the rotary blade in any of the cases where the sheath is cut in the circumferential direction and the extension axis direction, and the moving direction of the blade edge can be accurately adjusted. A cable sheath stripping tool having a guideable mechanism is provided, thereby improving the construction quality, workability, safety, etc. in the cable terminal processing work.

  In order to solve the above-described problems, in the cable sheath stripping tool of the present invention, the grip portion and the cable receiving portion are integrally formed via a substantially C-shaped arm portion, and the rotary blade support is formed on the grip portion. A cable sheath peeled off so that the sheath of the cable held between the rotary blade support and the cable receiving portion is opened and retracted with a circular rotary blade attached to the rotary blade support. In the taking tool, the cable receiving part is formed in a substantially groove shape, and two sets of receiving rollers facing the rotary blade support are provided in the groove, and these two sets of receiving rollers have their rotating shafts connected to the cable. The receiving roller is arranged at an appropriate distance in the axial direction of the cable, and the peripheral surface of the receiving roller is formed in a V shape. Such a receiving roller stabilizes the clamping state of the cable, and when the sheath is incised in the circumferential direction, the start end and the end of the incision line can be accurately matched, and when the cable is incised in the extension axis direction, the rotary blade Can be guided straight along the axis of the cable.

  Furthermore, the cable sheath stripping tool of the present invention is mounted on both surfaces of the rotary blade so that a gauge ring having a smaller diameter than that of the rotary blade is replaceable, and by changing the diameter of the gauge ring to be installed, the cutting edge dimensions of the rotary blade Is configured to be adjustable. Thereby, it becomes possible to adjust the cutting depth of the rotary blade with high accuracy in accordance with the variation in the thickness of the sheath.

  Furthermore, the cable sheath stripping tool of the present invention has a rotary blade support body, the support shaft portion of which is inserted into the grip portion, and advances and retracts in the axial direction by the rotation operation of an adjustment dial provided in the grip portion. The incision direction can be changed by turning 90 degrees around the axis by pushing a knob protruding from the rear end of the unit. This facilitates switching between the circumferential incision of the sheath and the incision in the extension axis direction.

  Furthermore, in the cable sheath stripping tool of the present invention, the rotary blade support includes two sets of press rollers on the extension of the blade edge surface with the rotary blade interposed therebetween, and these two sets of press rollers are: The rotating shaft is arranged in parallel with the rotating shaft of the rotary blade, and the circumferential surface of the presser roller is formed in an arc shape. These presser rollers contribute to stabilizing the holding state of the cable when the sheath is cut in the extension axis direction.

  Furthermore, the cable sheath stripping tool of the present invention is characterized in that the receiving roller and the presser roller are each divided into right and left, and the left and right rotate independently. As a result, even when the cable is curved in the incision in the extension axis direction, the cutting edge of the rotary blade can be accurately followed along the extension axis direction of the cable. If the presser roller is held so as to be swingable within a minute angle with respect to the axial direction of the cable, practically in an angle range of 2 to 4 degrees, the followability to the curved cable is further improved.

  In the cable sheath stripping tool of the present invention configured as described above, the two sets of receiving rollers provided in the cable receiving portion stably hold the cable by the V-shaped peripheral surface. When incising in the circumferential direction, the beginning and end of the incision line can be accurately matched to form a beautiful circular incision surface. When the cable is incised in the extension axis direction, the rotary blade The cutting edge can be guided straight along the axis of the cable.

  Furthermore, by mounting the gauge rings on both surfaces of the rotary blade in a replaceable manner, the cutting depth of the rotary blade can be adjusted appropriately in response to variations in sheath thickness.

  Further, the cable sheath stripping tool of the present invention has two sets of receiving rollers and two sets of pressing rollers facing each other, and sandwiching the cable between them, thereby cutting the sheath in the direction of the extension axis. The guide accuracy of the cutting edge of the rotary blade can be improved.

  As a result, the construction quality and work efficiency in the cable terminal processing work are improved, and safety is also ensured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are external perspective views of a cable sheath stripping tool according to an embodiment of the present invention, FIGS. 3 to 6 are explanatory views showing the usage state of the cable sheath stripping tool, and FIG. 7 is the cable sheath stripping tool. It is principal part sectional drawing of a taking tool.

  As shown in FIGS. 1 and 2, the main components of the cable sheath stripping tool 1 are a tool body 2 in which a grip portion 21, an arm portion 22, and a cable receiving portion 23 are integrally formed, and a cable receiving portion. A receiving roller 3 attached to the portion 23, and a rotary blade support 6 that is attached to the grip portion 21 and holds the rotary blade 4 and the presser roller 5.

  The tool body 2 is a member formed by die casting of an aluminum alloy, for example. The grip portion 21 has a substantially cylindrical shape large enough to be gripped with one hand. The arm portion 22 has a substantially C shape, extends from one end of the grip portion 21, and holds the cable receiving portion 23 at the tip thereof. The cable receiving portion 23 is formed in a substantially groove shape, and the groove opening faces the rotary blade support 6 side. The cable 9 is inserted inside the arm portion 22 along the groove direction of the cable receiving portion 23.

  Two sets of receiving rollers 3 are arranged in the groove of the cable receiving portion 23. As shown in FIGS. 3 to 7, the two sets of receiving rollers 3 have the same size and shape, and are separated by an appropriate distance in the extending direction of the groove, that is, in the axial direction of the cable 9. It is attached perpendicular to the axial direction. Each of the receiving rollers 3 has a structure that is divided into left and right parts with respect to the axial direction of the cable 9. Each of the left and right portions is a substantially frustoconical rotator 31, and these rotators 31 are arranged on the same axis so as to abut each other on the small diameter side, thereby forming a V-shaped guide surface. The receiving angle of the V-shaped guide surface is set to approximately 90 degrees. Thereby, the cable 9 of a different diameter can be stably hold | maintained with the same receiving angle. As shown in FIG. 7, a shaft pin 32 is inserted through the shaft center of the receiving roller 3, and each rotating body 31 is individually supported by the shaft pin 32 via bearings 33 and 34. Thereby, the left and right rotating bodies 31 rotate independently of each other. The shaft pin 32 is inserted into shaft holes formed on both side walls of the cable receiving portion 23, and a shaft hole is formed by a large-diameter head 35 formed at one end and a retaining ring 36 fitted at the other end. It is attached so that it does not come out of it.

  The rotary blade support 6 holds the rotary blade 4 and the presser roller 5 by a substantially groove-shaped support base 61 arranged so as to face the cable receiving portion 23. The support base 61 is coupled to one end of the support shaft portion 7 together with the blade bearing 41 that pivotally supports the rotary blade 4 at the center of the bottom plate, and is held so as not to rotate about the axis with respect to the support shaft portion 7. . The support shaft portion 7 is inserted inside the grip portion 21.

  The blade bearing 41 is a substantially groove-shaped member having a pair of upright pieces (see FIG. 7). The blade bearing 41 has its groove direction aligned with the groove direction of the support base 61, and the center of the bottom plate is coupled to one end of the support shaft portion 7. The blade bearing 41 is also held so as not to rotate about the axis with respect to the support shaft portion 7. A shaft hole is formed in the upper part of the upright piece. A rotary blade 4 and two gauge rings 42 sandwiching both sides of the rotary blade 4 are attached between both standing pieces, and are rotatably supported by a blade shaft member 43 inserted into the shaft hole.

  As shown in FIGS. 7 and 8, the blade shaft member 43 is composed of one male member 43a and the other female member 43b, and the shaft pin 44 formed on the male member 43a is inserted into the shaft hole of the blade bearing 41. Then, the male screw portion formed at the tip of the shaft pin 44 is screwed into the female screw hole formed in the female member 43b. The heads of the male member 43a and the female member 43b have diameters that can be picked and rotated by the fingertips, and the peripheral surfaces thereof are knurled.

  The gauge ring 42 is a short cylindrical body having a diameter smaller than that of the rotary blade 4, and the cutting depth of the rotary blade 4 is regulated to be constant by bringing the peripheral surface into contact with the cable 9. The illustrated rotary blade 4 has a shape having a small-diameter sleeve portion on both surfaces of a central portion of a disk-shaped blade body, and a concave portion is formed on one surface of the gauge ring 42 to accommodate the sleeve portion. Yes. A plurality of gauge rings 42 having different diameters by several millimeters are prepared, and the gauge ring 42 can be replaced with a gauge ring 42 having an appropriate diameter in accordance with variations in the thickness of the sheath 96. The gauge ring 42 is exchanged by rotating both heads of the blade shaft member 43 in the opposite direction to separate the male member 43a and the female member 43b, and pulling out the male member 43a from the blade bearing 41, and rotating the blade 4 and the gauge ring. 42 can be simply taken out from the blade bearing 41 together.

  Two sets of presser rollers 5 are attached in the groove of the support base 61 via roller bearings 51 having a substantially groove shape. The two sets of presser rollers 5 have the same size and shape, and are separated by an appropriate distance in the extending direction of the groove, that is, the extending direction of the cutting edge of the rotary blade 4, and the respective rotary shafts are parallel to the rotary shaft of the rotary blade 4. Has been placed.

  Each presser roller 5 is divided into left and right parts like the receiving roller 3. Each of the left and right parts is a rotating body 52 in which the generatrix of the peripheral surface is recessed in a substantially arc shape, and these rotating bodies 52 are arranged on the same axis so that the small diameter sides of each other face each other. Is formed. The curvature of the arcuate guide surface is set so as to approximate the peripheral curvature of the cable 9 used.

  A shaft pin 53 is inserted through the shaft center of the presser roller 5, and each rotating body 52 is individually supported by the shaft pin 53 via a bearing. Thereby, the left and right rotating bodies 52 rotate independently of each other. The shaft pin 53 is inserted through shaft holes formed in both standing pieces of the roller bearing 51 so as not to come out of the shaft hole.

  The center of the bottom plate of the roller bearing 51 is coupled to the bottom plate of the support base 61 by one rivet pin 55. A slight gap S (see FIG. 8) is provided between the both side pieces of the support base 61 and the upright pieces of the roller bearing 51. Therefore, the roller bearing 51 is centered on the rivet pin 55. On the other hand, it is held in a state where it can swing within a minute angle, specifically, an angle range of approximately 2 to 4 degrees.

  As shown in FIG. 7, the support shaft portion 7 is connected to a support base 61 of the rotary blade support 6 and extends to the rear end of the grip portion 21, and an adjustment cylinder 81 through which the support rod 71 is inserted. It consists of and. The support rod 71 has a small-diameter portion 72 on the distal end side (blade edge side) and an intermediate large-diameter portion 73, and a substantially spherical knob via a small-diameter knob shaft 74 at the rear end of the large-diameter portion 73. 75 is attached. The adjustment cylinder 81 is formed with a cylindrical hole including a small-diameter portion 82 on the front end side and a large-diameter portion 83 from the middle to the rear end. A gap is provided between the cylinder hole and the support rod 71 inserted into the cylinder hole, and a compression coil spring 76 is inserted into the gap. The compression coil spring 76 is compressed using the step between the small diameter portion 82 and the large diameter portion 83 of the cylindrical hole and the step between the small diameter portion 72 and the large diameter portion 73 of the support rod 71 as a spring seat, and the support rod 71 is always compressed. It is biased toward the rear end. A short cylindrical stopper member 84 is attached to the rear end of the adjustment cylinder 81 in a state where the knob shaft 74 of the support rod 71 is inserted through the shaft center thereof, and restrains the support rod 71 from being pulled out to the rear end. ing. The stop member 84 is attached by screwing a male screw formed on its peripheral surface with a female screw formed on the inner surface of the rear end of the adjustment cylinder 81.

  On the contact surface between the large-diameter portion 73 of the support rod 71 and the stop member 84, a clutch mechanism that rotates and fixes the support rod 71 around the axis is provided. In the illustrated clutch mechanism, a claw 77 formed in the large-diameter portion 73 of the support rod 71 is engaged with a groove 85 formed in the stop member 84. As shown in the attached drawing on the right side of FIG. 7, the groove 85 is also formed at a position where the support rod 71 is rotated 90 degrees around the axis. When the knob 75 is pushed in and the coil spring 76 is compressed, the engagement state of the clutch mechanism is released, and when the support rod 71 is rotated as it is and the knob 75 is returned, the claw 77 engages with the groove 85 at a different position, The rotation of the support rod 71 is restricted.

  The adjustment cylinder 81 is engaged with the grip portion 21 by engaging the tip end of a guide pin 86 fitted from the outside of the grip portion with a groove (not shown) extending in the axial direction formed on the outer surface thereof. So that it does not rotate around the axis and can move forward and backward in the axial direction. A male screw is formed on the outer peripheral surface on the rear end side of the adjustment cylinder 81, and this male screw becomes a feed screw that moves forward and backward by operation of the adjustment dial 24 attached to the grip portion 21. The adjustment dial 24 has a cylinder part 25 inserted inside the grip part 21, and a female screw formed inside the cylinder part 25 is screwed with a male screw formed on the outer peripheral surface of the adjustment cylinder 81. Yes. A circumferential engaging groove 27 is formed on the outer peripheral surface of the cylindrical portion 25, and the tip of the engaging pin 28 fitted from the outside of the grip portion 21 is engaged with the engaging groove 27. Thereby, the adjustment dial 24 is rotatably held with respect to the grip portion 21, and the adjustment cylinder 81 is advanced and retracted steplessly by the rotation.

  The operation of each part when the sheath 96 of the cable 9 is incised using the cable sheath stripping tool 1 having such a structure will be described.

  When the sheath 96 is cut in the circumferential direction, the rotary blade 4 is orthogonal to the axial direction of the cable 9 set on the receiving roller 3 as shown in FIGS. Then, the adjustment dial 24 is turned to advance the rotary blade support 6 toward the cable 9, and the rotary blade 4 is bitten into the sheath 96. The cable 9 is sandwiched between the V-shaped guide surfaces of the two sets of receiving rollers 3 and the two gauge rings 42 attached to both sides of the rotary blade 4, and is in a substantially straight state (or slightly U-shaped). In a bent state). Naturally, the dimensions of each part are set so that the cut surface of the rotary blade 4 is at a position that bisects the distance between the axes of the two sets of receiving rollers 3 at this time.

  If the tool body 2 is rotated once around the axis of the cable 9 while holding the grip portion 21, the sheath 96 is cut in the circumferential direction. In the cable sheath stripping tool 1 of the present invention, the distance between the fulcrums of the cable is wider than that of a conventional general tool by arranging the two sets of receiving rollers 3 apart from each other. The upright accuracy of the blade 4 is increased, and the inclination of the rotary blade 4 can be kept extremely small even while the tool body 2 is being rotated. The distance between the shafts of the two sets of receiving rollers 3 is preferably set in a range of at least one times the diameter of the cable 9 and practically about 1.5 to 3 times.

  When the sheath 96 is cut in the circumferential direction, the gauge ring 42 in contact with the surface of the sheath 96 and the rotary blade 4 biting into the sheath 96 rotate in conjunction with the rotation of the tool body 2. Since the gauge ring 42 is attached close to the rotary blade 4, the cutting depth of the blade edge is made uniform with high accuracy.

  The receiving roller 3 does not rotate during the cutting operation in the circumferential direction because the rotation axis thereof is orthogonal to the axial direction of the cable 9. However, since polyvinyl chloride and heat-resistant polyethylene constituting the sheath 96 are resins having a relatively high lubricity, if the peripheral surface of the receiving roller 3 is smooth, the resistance of the tool body 2 is only slight. Does not reach. In addition, since the guide surface of the receiving roller 3 is formed in a V shape, the receiving roller 3 and the sheath 96 are in a state close to point contact. This point also contributes to reducing the frictional resistance between the sheath 96 and the receiving roller 3. The receiving angle of the guide surface of the receiving roller 3 can be suitably set in a range of approximately 80 to 110 degrees, with 90 degrees being the optimum.

  When cutting the sheath 96 along the extension shaft, the adjustment dial 24 is operated to once separate the rotary blade support 6 from the cable 9 and then set on the receiving roller 3 as shown in FIGS. The rotary blade 4 is directed in the axial direction of the cable 9 that has been made. Then, the adjustment dial 24 is rotated to advance the rotary blade support 6 toward the cable 9, and the rotary blade 4 is bitten into the sheath 96. The cable 9 is sandwiched between the V-shaped guide surfaces of the two sets of receiving rollers 3, the two gauge rings 42, and the two sets of pressing rollers 5, and is in a straight extension state more firmly than the state shown in FIG. Held in. If the tool body 2 is translated in the direction of the extension axis of the cable 9 while holding the grip portion 21 as it is, the sheath 96 is cut in a straight line. In the illustrated embodiment, a screw hole is provided on the outer side of the cable receiving portion 23, and an auxiliary grip facing the grip portion can be attached to the screw receiving portion as necessary.

  In the cable sheath stripping tool 1 of the present invention, the guide surface of the receiving roller 3 is formed in a V shape, and the guide surface of the presser roller 5 is formed in an arc shape. An incision line that is securely held and straight and without distortion can be formed. In addition, the receiving roller 3 and the presser roller 5 are divided into left and right parts, and the left and right parts are independently rotated. Further, the roller bearing 51 that holds the presser roller 5 is configured to swing by a minute angle. Even when the cable 9 is irregularly curved, the cutting edge of the rotary blade 4 can be accurately followed along the extension axis direction of the cable 9.

  The cable sheath stripping tool 1 of the present invention employs a clutch mechanism that rotates the rotary blade support 6 by pushing the knob into the grip portion 21 when changing the incision direction of the rotary blade 4. The mechanism has the following advantages. That is, in the clutch mechanism in which the knob is pulled out from the grip portion 21 and the rotary blade support body 6 is rotated, the support shaft portion 7 of the rotary blade support body 6 is biased toward the blade edge side, contrary to the present invention. There is a need. In this case, if the cutting edge is strongly pressed against the cable 9, the repulsive force may overcome the urging force toward the cutting edge and the cutting edge may move backward. In order to avoid this, it is necessary to considerably increase the elastic force of a coil spring or the like that biases the support shaft portion 7 toward the blade edge side. Then, when changing the incision direction, an excessive force is required for the operation of pulling out the knob, and the usability is lowered.

  On the other hand, in the cable sheath stripping tool 1 of the present invention, the support shaft portion 7 is urged to the opposite side of the blade edge, and the retreat position is restrained by the stop member 84 attached to the rear end of the adjustment cylinder 81. Therefore, even if the cutting edge is strongly pressed against the cable 9, the cutting edge does not retract at all. Therefore, the elastic force of the coil spring that biases the support shaft portion 7 can be small, the direction of the blade edge can be changed with a light force, and the internal mechanism can be made compact.

  Thus, the cable sheath stripping tool 1 of the present invention has two sets of receiving rollers 3 attached with the rotating shaft orthogonal to the axial direction of the cable 9, and two sets of press rollers 5 with the rotating blade 4 interposed therebetween. The workability and safety in the terminal processing work of the cable 9 are greatly improved by the rotary blade support 6 that holds the blade and the clutch mechanism that changes the blade tip direction of the rotary blade 4. Note that the cable sheath stripping tool 1 of the present invention is not limited to the above-described embodiment, and it is of course possible to appropriately change the shape and structure of the details without departing from the spirit of the invention.

It is an external appearance perspective view of the cable sheath peeling tool which concerns on embodiment of this invention. Similarly, it is the external appearance perspective view of the cable sheath stripping tool seen from another direction. It is a front view of the cable sheath peeling tool which showed the use condition when incising a sheath in the circumferential direction. Similarly, it is a side view. It is a front view of the cable sheath peeling tool which showed the use condition when incising a sheath in the direction of an extension axis. Similarly, it is a side view. It is principal part sectional drawing of a cable sheath stripping tool. It is the figure which looked at the rotary blade support body from the blade edge | side side. It is sectional drawing which shows the internal structure of a cable simply.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cable sheath stripping tool 2 Tool main body 21 Grip part 22 Arm part 23 Cable receiving part 24 Adjustment dial 3 Receiving roller 4 Rotary blade 42 Gauge ring 5 Pressing roller 6 Rotary blade support body 7 Support shaft part 75 Knob 9 Cable 96 Sheath

Claims (7)

The grip portion and the cable receiving portion are integrally formed via a substantially C-shaped arm portion, and the rotary blade support is held in the grip portion so as to be able to advance and retreat, and the rotary blade support and the cable receiving portion are In the cable sheath stripping tool configured to incise the sheath of the cable sandwiched therebetween with a circular rotary blade attached to the rotary blade support,
The cable receiving portion is formed in a substantially groove shape, and two sets of receiving rollers facing the rotary blade support are provided in the groove, and these two sets of receiving rollers have their rotating shafts in the axial direction of the cable. A cable sheath stripping tool, wherein the cable sheath stripping tool is arranged so as to be orthogonal and spaced apart from each other by an appropriate distance in the axial direction of the cable, and the peripheral surface of the receiving roller is formed in a V shape.   A gauge ring having a smaller diameter than that of the rotary blade is replaceably mounted on both surfaces of the rotary blade, and the cutting edge size of the rotary blade can be adjusted by changing the diameter of the gauge ring to be mounted. The cable sheath stripping tool described in 1.   The rotary blade support is inserted into the grip part, and is moved forward and backward in the axial direction by rotating an adjustment dial provided on the grip part. The cable sheath stripping tool according to claim 1 or 2, wherein the cable sheath stripping tool is configured such that the incision direction can be changed by turning 90 degrees around an axis by a pushing operation.   The rotary blade support body has two sets of press rollers on the extension of the cutting edge surface of the rotary blade with the rotary blade interposed therebetween, and these two sets of press rollers have their rotary axes parallel to the rotary axis of the rotary blade. The cable sheath stripping tool according to claim 3, wherein the pressing roller is formed in an arc shape.   5. The cable sheath stripping tool according to claim 1, wherein the receiving roller is divided into right and left parts, and the left and right parts are independently rotated.   The cable sheath stripping tool according to claim 4 or 5, wherein the presser roller is divided into right and left parts, and the left and right parts are independently rotated.   The cable sheath stripping tool according to claim 4 or 6, wherein the presser roller is held so as to be swingable within an angle range of 2 to 4 degrees with respect to the axial direction of the cable.

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