JP2007306697A - Device and method for stripping off cable protection coat layer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide cable protection coat layer stripping off-device/method for easily stripping off a protection coat layer. <P>SOLUTION: A crossing blade 18 and a vertical section blade 42 are moved to an axial direction terminal side of a cable 13 in a state where the crossing blade 18 and the vertical section blade 42 are engaged with a coat 26 of the protection coat layer 12. Thus, a vertical section slit 46 along an axial direction of the cable 13 formed of the vertical section blade 42 extends to the axial direction terminal side of the cable 13 while it cleaves. Since a wall face of a terminal side of the cable 13 in inner wall faces of a circular slit 45 is depressed by the crossing blade 18, the protection coat layer 12 is stripped off from an electric wire 11 so that it is pulled up with a vertical section slit 46 as a starting point. Even if frictional force of the electric wire 11 and the protection coat layer 12 is large, the protection coat layer 12 can easily be stripped off. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cable protection skin layer peeling apparatus and a cable protection skin layer peeling method.

  For example, since a relatively large current flows through a cable for a power circuit of an electric vehicle, a device for efficiently dissipating heat generated from the cable when energized is required.

  Therefore, the thickness of the protective skin layer is positioned in the circumferential direction so that the plurality of wires are surrounded by the protective skin layer, and the outer peripheral surface of the wire and the inner peripheral surface of the protective skin layer are in close contact with each other as much as possible. Different cables are considered. According to this cable, the heat generated from the electric wire during energization is first transmitted to the protective skin layer that is in contact with the outer peripheral surface of the electric wire. Since the inner peripheral surface of this protective skin layer is in close contact with the outer peripheral surface of the electric wire over a wide area, the heat from the electric wire is more efficiently transferred to the protective outer skin layer and dissipated from the outer surface of the protective outer skin layer to the outside. .

  Now, when connecting the end of a cable with an electronic component, it is necessary to peel off the covering layer of the cable and expose the core wire. In a normal electric wire, since the covering layer covered with the core wire has a substantially uniform thickness, a slit is formed in the covering layer at a predetermined depth in the circumferential direction of the electric wire, and the covering layer is pulled toward the end of the electric wire. Thus, the coating layer can be easily torn off.

  In general cabtyre cables, since the filler inside the covering layer and the electric wire are not in close contact, a slit is formed in the covering layer at a predetermined depth in the circumferential direction of the cable, and the covering layer is connected to the end of the cable. When pulled to the side, the coating layer is torn off, and the filler is easily pulled out by sliding on the outer peripheral surface of the electric wire.

For example, Patent Document 1 is known as a coating stripping apparatus that strips a coating layer by forming a slit having a predetermined thickness in the coating layer and pulling the coating layer toward the end of the electric wire or cable.
JP 2003-32825 A

  However, in a newly structured cable, the protective outer layer may be formed thinner than a normal cabtire cable in order to improve heat dissipation. In this case, even if the jig is pulled out while being inserted into the slit, the force from the jig is not sufficiently stored in the protective outer skin layer, and the jig slips on the surface of the insulating layer of the electric wire, There is concern about damaging the insulating layer.

  In addition, since the thickness of the protective outer skin layer varies depending on the position in the circumferential direction in the new structure cable, even if a slit is formed at a predetermined depth in the protective outer skin layer, The department remains connected. For this reason, the protective outer skin layer cannot be easily torn off, and a large force is required to try to tear it off forcibly.

  Furthermore, after forming a slit of a predetermined depth in the protective outer skin layer, it is conceivable to pull the protective outer skin layer toward the end of the cable and slide the outer peripheral surface of the electric wire, but as described above, Since the inner peripheral surface of the outer skin layer is in close contact with the outer peripheral surface of the electric wire in order to improve thermal conductivity, the protective outer skin layer and the electric wire are very difficult to slip. For this reason, even if the protective skin layer is pulled toward the end portion, the protective skin layer cannot be easily pulled out, and a large force is still required if it is forced to pull out.

  The present invention has been completed based on the above circumstances, and provides a cable protection skin layer peeling device and a cable protection skin layer peeling method that can easily peel off the protection skin layer. Objective.

  As means for achieving the above object, the invention of claim 1 is characterized in that a plurality of electric wires are surrounded by a protective outer skin layer in contact with the outer peripheral surface, and the thickness of the protective outer skin layer depends on the circumferential position. A device for stripping the protective skin layer of a cable used for different cables, the cable holding mechanism for holding the cable from moving in the axial direction, and the circumferential direction of the cable A transverse blade having a blade extending along the axis, a transverse blade pushing mechanism for causing the blade of the transverse blade to bite into the protective outer skin layer by moving the transverse blade in the axial direction of the cable, and a blade of the transverse blade By rotating the crossing blade around the cable in a state of being bitten into the protective skin layer, an annular thread having a predetermined depth is formed in the protective skin layer. A blade turning mechanism for forming a cable, a longitudinal blade having a blade along the axial direction of the cable, and moving the longitudinal blade in the axial direction of the cable, thereby protecting the blade of the longitudinal blade A longitudinal blade push-in mechanism that forms a longitudinal slit along the axial direction of the cable by biting into the position on the end side of the cable from the annular slit in the outer skin layer, and a blade of the longitudinal blade bite into the longitudinal slit In the state, the longitudinal blade moving mechanism for moving the longitudinal blade toward the axial end of the cable, and a plate-like shape, the plate surface of which faces the axial direction of the cable, and the tip bites into the annular slit. Grip the tip of the stripping jig into the jig and the part of the annular slit located on the extension of the longitudinal slit In Mase state, comprising a stripping jig moving mechanism for moving the stripping jig in the axial direction terminal side of the cable.

  In order to peel off the protective sheath layer of the cable using the cable protective sheath layer stripping device according to claim 1, for example, the following may be performed. First, the cable is fixed by a cable holding mechanism so that the cable does not move in the axial direction. Next, a step of forming an annular slit in the protective outer skin layer with a transverse blade, or a step of forming a vertical slit in the protective outer skin layer with a vertical blade is performed. Either of the two steps may be performed first or may be performed simultaneously.

  The process of forming the transverse slit is as follows. That is, the crossing blade is moved in the axial direction of the cable by the crossing blade pushing mechanism so as to bite into the protective outer skin layer, and the blade is swung into the protective coating layer, and the blade is turned around the cable by the blade turning mechanism. Is rotated to form an annular slit having a predetermined depth in the protective outer skin layer.

  Moreover, the process of forming a longitudinal slit is as follows. That is, the longitudinal blade is moved in the axial direction of the cable by the longitudinal blade pushing mechanism to form a longitudinal slit along the axial direction of the cable at a position closer to the end of the cable than the annular slit in the protective outer skin layer.

  Next, the stripping jig with the tip of the stripping tool biting into the portion of the annular slit located on the extension of the longitudinal slit and the blade of the longitudinal blade biting into the longitudinal slit And the longitudinal blade are moved to the axial end side of the cable by the stripping jig moving mechanism and the longitudinal blade moving mechanism, respectively. Then, the plate surface of the stripping jig presses the inner surface of the annular slit toward the end of the cable, so that the longitudinal slit extends toward the end of the cable in the axial direction, and the protective skin layer turns up from the electric wire. And then stripped off.

  In addition, with the blade of the longitudinal blade biting into the longitudinal slit, the longitudinal blade is moved to the axial end side of the cable by the longitudinal blade moving mechanism, and the longitudinal slit is extended to the end of the cable in advance, and then the ring The stripping jig may be moved to the axial end side of the cable by the stripping jig moving mechanism with the tip of the stripping jig biting into the portion of the slit located on the extension of the longitudinal slit. .

  Thus, according to the cable protective skin layer peeling apparatus according to claim 1, since the protective skin layer is peeled off so as to be turned up from the electric wire, the frictional force between the electric wire and the protective skin layer is large. Also, the protective skin layer can be easily peeled off.

  The invention of claim 2 is used for a cable in which a plurality of electric wires are surrounded by a protective outer skin layer in contact with the outer peripheral surface, and the thickness of the protective outer skin layer is different depending on the circumferential position. An apparatus for stripping off the protective skin layer of the cable, the cable holding mechanism for holding the cable so as not to move in the axial direction, a transverse blade having a blade along the circumferential direction of the cable, A transverse blade pushing mechanism for causing the blade of the transverse blade to bite into the protective skin layer by moving the transverse blade in the axial direction of the cable; and the transverse blade with the blade of the transverse blade biting into the protective skin layer A blade turning mechanism that forms an annular slit of a predetermined depth in the protective outer skin layer by turning the blade around the cable; A longitudinal blade having a blade along the axial direction of the cable, and by moving the longitudinal blade in the axial direction of the cable, the blade of the longitudinal blade is moved more than the annular slit in the protective skin layer than the annular slit. A longitudinal blade push-in mechanism that forms a longitudinal slit by biting into the terminal side of the cable, and a stripping jig that has a plate shape, the plate surface of which faces the axial direction of the cable, and the tip bites into the annular slit. In the state where the tip of the stripping jig is bitten into the portion of the annular slit located on the extension of the vertical slit, and the blade of the vertical blade is bitten into the vertical slit, A stripping jig and a blade moving mechanism for moving the longitudinal blade toward the axial end of the cable.

  According to the cable protection outer layer peeling apparatus according to the second aspect, for example, the protective outer layer can be peeled off as follows. First, the cable is fixed by a cable holding mechanism so that the cable does not move in the axial direction. Next, a step of forming an annular slit in the protective outer skin layer with a transverse blade, or a step of forming a vertical slit in the protective outer skin layer with a vertical blade is performed. Either of the two steps may be performed first or may be performed simultaneously.

  The process of forming the transverse slit is as follows. That is, the crossing blade is moved to a predetermined position in the axial direction of the cable by the crossing blade pushing mechanism so as to bite into the protective outer skin layer, and the crossing blade is cut by the blade turning mechanism while the blade of the crossing blade bites into the protective coating layer. Is rotated around the cable to form an annular slit of a predetermined depth in the protective outer skin layer.

  Moreover, the process of forming a longitudinal slit is as follows. That is, the longitudinal blade is moved in the axial direction of the cable by the longitudinal blade pushing mechanism to form a longitudinal slit along the axial direction of the cable at a position closer to the end of the cable than the annular slit in the protective outer skin layer.

  Next, the stripping jig with the tip of the stripping tool biting into the portion of the annular slit located on the extension of the longitudinal slit and the blade of the longitudinal blade biting into the longitudinal slit The longitudinal blade is moved to the axial end side of the cable by the blade moving mechanism. Then, the plate surface of the stripping jig presses the inner surface of the annular slit toward the end of the cable, so that the longitudinal slit extends toward the end of the cable in the axial direction, and the protective skin layer turns up from the electric wire. And then stripped off.

  Thus, according to the cable protection outer layer peeling apparatus according to the second aspect, the stripping jig and the longitudinal blade can be moved by the blade moving mechanism. The number of parts can be reduced compared to the case where a moving mechanism is provided.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the blade turning mechanism is supported by a frame via a bearing, and an annular rotator for inserting the cable into the hollow interior, and the annular rotator. It is characterized by comprising an annular rotating body drive mechanism for rotating the.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the transverse blade and / or the longitudinal blade and a position symmetrical to the transverse blade with respect to the axis of the cable A cable support portion is provided that supports the cable by receiving a force applied to the cable when the longitudinal blade is bitten into the protective outer skin layer.

  According to a fifth aspect of the present invention, there is provided a cable support outer layer peeling mechanism according to the fourth aspect, further comprising a cable support adjustment mechanism that moves the cable support in the axial direction of the cable. apparatus.

  According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, a region of the cable support portion that faces the cable is an arcuate receiving surface.

  A seventh aspect of the invention is characterized in that, in any of the first to sixth aspects, the stripping jig is the transverse blade.

  According to the invention of claim 8, the protective outer skin layer of a cable, wherein a plurality of electric wires are surrounded by a protective outer skin layer that is in contact with the outer peripheral surface, and the thickness of the protective outer skin layer is different depending on the circumferential direction. A cable holding step for holding the cable so as not to move in the axial direction, and a transverse blade having a blade along the circumferential direction of the cable is moved in the axial direction of the cable. A crossing blade pushing step for causing the blade of the crossing blade to bite into the protective skin layer, and turning the crossing blade around the cable in a state where the blade of the crossing blade bites into the protective skin layer A blade turning step for forming an annular slit of a predetermined depth in the protective outer skin layer, and a longitudinal blade having a blade along the axial direction of the cable By moving the blade of the longitudinal blade in the axial direction of the cable, the longitudinal slit along the axial direction of the cable is made to bite into the position of the end of the cable with respect to the annular slit in the protective outer skin layer. A longitudinal blade pushing step to be formed; a longitudinal blade moving step of moving the longitudinal blade toward the axial end of the cable in a state where the blade of the longitudinal blade is biting into the longitudinal slit; and the longitudinal slit of the annular slit. A crossing blade moving step of moving the crossing blade to move the crossing blade to the axial end side of the cable in a state where the crossing blade is bitten into a portion located on the extension of the slit, To do.

  The invention according to claim 9 is characterized in that a plurality of electric wires are surrounded by a protective outer skin layer in contact with the outer peripheral surface thereof, and the thickness of the protective outer skin layer varies depending on the circumferential direction. A cable holding step for holding the cable so as not to move in the axial direction, and a transverse blade having a blade along the circumferential direction of the cable is moved in the axial direction of the cable. A crossing blade pushing step for causing the blade of the crossing blade to bite into the protective skin layer, and turning the crossing blade around the cable in a state where the blade of the crossing blade bites into the protective skin layer A blade turning step for forming an annular slit of a predetermined depth in the protective outer skin layer, and a longitudinal blade having a blade along the axial direction of the cable By moving the blade of the longitudinal blade in the axial direction of the cable, the longitudinal slit along the axial direction of the cable is made to bite into the position of the end of the cable with respect to the annular slit in the protective outer skin layer. A longitudinal blade pushing step to be formed, and a state in which the blade of the transverse blade is bitten into a portion of the annular slit located on the extension of the longitudinal slit, and the blade of the longitudinal blade is bitten into the longitudinal slit In this state, a both-blade moving step of moving the transverse blade and the longitudinal blade toward the axial end of the cable is performed.

<Invention of Claims 1 and 8>
According to the first and eighth aspects of the invention, since the protective outer skin layer is peeled off from the electric wire, even if the frictional force between the electric wire and the protective outer skin layer is large, the protective outer skin layer can be easily removed. The skin layer can be peeled off.

<Invention of Claims 2 and 9>
According to the invention of claim 2 and claim 9, since the stripping jig and the longitudinal blade can be moved by the blade moving mechanism, when the moving mechanism is provided for each of the stripping jig and the longitudinal blade. Compared to this, the number of parts can be reduced.

<Invention of Claim 3>
The cable is inserted into the hollow interior of the annular rotator, and the cable is held along the rotation axis of the annular rotator. In this state, the transverse blade is bitten into the protective outer skin layer, and the annular rotator is rotated about the rotation axis by the annular rotator driving mechanism, so that the transverse blade attached to the annular rotator is Since the cable is swung around the cable while maintaining a certain distance from the rotating shaft, an annular slit having a certain depth can be formed in the protective outer skin layer. Thus, according to the invention of claim 3, the annular slit can be formed in the protective outer skin layer with a simple configuration of rotating the annular rotator.

<Invention of Claim 4>
When the blade of the transverse blade and / or the blade of the longitudinal blade is bitten into the protective skin layer from the axial direction of the cable, the cable is pressed by the transverse blade and / or the longitudinal blade to bend and deform, and the transverse blade and / or the longitudinal blade There is a concern that slits are less likely to be formed in the protective outer skin layer due to escape of the pressing force from the protective skin layer.

  According to the invention of claim 4, the cable is supported by the cable support portion arranged symmetrically with the transverse blade and / or the longitudinal blade with respect to the axis thereof, so that the transverse blade and / or the longitudinal blade is connected to the cable. Even when pushed in the axial direction, the cable can be prevented from being bent and deformed. Thereby, a slit can be reliably formed in the protective outer skin layer.

<Invention of Claim 5>
According to the invention of claim 5, by moving the cable support adjustment mechanism in the axial direction, even when cables having different diameters are used, the cable support can be supported without bending the cable. Thereby, the pressing force from the first and longitudinal blades can be reliably received by the cable support portion.

<Invention of Claim 6>
According to invention of Claim 6, a cable can be hold | maintained firmly with the circular arc-shaped receiving surface of a cable support part.

<Invention of Claim 7>
According to the invention of claim 7, the number of parts can be reduced as compared with the case where the stripping jig and the crossing blade are provided separately.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. A cable protective skin layer stripping device 10 according to this embodiment is for stripping the protective skin layer 12 of a cable 13 formed by surrounding a plurality of electric wires 11 with a protective skin layer 12. The frame 15 mounted on the base 14, the annular rotator 17 (corresponding to the blade turning mechanism of the present invention) supported on the frame 15 via the bearing 16, and the frame 15 mounted on the annular rotator 17 A crossing blade 18 (corresponding to a stripping jig of the present invention) that cuts into the protective skin layer 12 of the cable 13 and strips off the protective skin layer 12 is provided.

  The base 14 has a shape extending in the left-right direction in FIG. As shown in FIG. 1, the base 14 is provided with a linear guide 47 (corresponding to the blade moving mechanism of the present invention) extending in the left-right direction in FIG. 1, and the frame 15 is composed of a frame moving mechanism 19 (blade of the present invention). It is slidably attached to this linear guide 47 via a corresponding movement mechanism. Although not shown in detail, the base 14 and the frame moving mechanism 19 are provided with a driving mechanism (not shown), and by driving this driving mechanism, the frame 15 moves in the left-right direction (the direction indicated by the arrow A in FIG. 1). ) Can be moved.

  The frame 15 is formed to extend upward in FIG. 1 from the frame moving mechanism 19, and an annular rotating body 17 is supported on the upper end portion of the frame 15 via a bearing 16 including a bearing 20 and a bearing fixing nut 21. Yes. The annular rotator 17 has a cylindrical shape and is arranged such that the axial direction faces the left-right direction in FIG. 1 (the direction indicated by the arrow A). An annular rotator side gear 22 (corresponding to the annular rotator driving mechanism of the present invention) is provided at the left end of the annular rotator 17. A servo motor side gear 23 (corresponding to the annular rotator driving mechanism of the present invention) is fitted below the annular rotator side gear 22, and the servo for the annular rotator is located on the left side of the servo motor side gear 23. A motor 24 (corresponding to the annular rotating body drive mechanism of the present invention) is attached. By driving the servo motor 24 for the annular rotator, a driving force is transmitted through the servo motor side gear 23 and the annular rotator side gear 22 so that the annular rotator 17 rotates.

  In the hollow interior of the annular rotator 17, the cable 13 is arranged in a state extending in the left-right direction in FIG. As shown in FIG. 3, the cable 13 includes three electric wires 11 surrounded by a protective outer skin layer 12, and the cross-sectional shape of the cable 13 is a substantially true circle. The three electric wires 11 have a positional relationship such that the protective outer skin layer 12 forms a substantially stacked shape (a form in which a substantially equilateral triangle is drawn when the centers of the electric wires 11 are connected), and at a predetermined pitch. It is held in a twisted state.

  The protective skin layer 12 includes an inner layer 25 that is in contact with the outer surface of the electric wire 11, and an outer skin 26 that is in close contact with the outer peripheral surface of the inner layer 25 and surrounds the inner layer 25. The inner layer 25 and the outer skin 26 are made of a synthetic resin, and the inner layer 25 and the outer skin 26 may be integrally or separately formed of the same synthetic resin material, or may be formed of different synthetic resin materials. The thickness dimension of the inner layer 25 described above is made different depending on the position in the circumferential direction of the cable 13 and is in wide contact with the outer surface of the electric wire 11. On the other hand, the thickness dimension of the outer skin 26 described above is set to be approximately the same depending on the circumferential direction of the cable 13.

  The electric wire 11 has a form in which the outer circumference of a conductor 28 made of metal (for example, aluminum alloy or copper alloy) is surrounded by an insulating coating 27 made of synthetic resin, and the conductor 28 spirals a plurality of thin wires (not shown). Consists of twisted wires that are close together. The cross-sectional shape of the electric wire 11 is such that both the conductor 28 and the insulating coating 27 are substantially circular.

  When the electric wire 11 is energized, heat is generated. This heat is transferred from the insulating coating 27 of the electric wire 11 to the inner layer 25 of the protective outer skin layer 12. At this time, since the outer surface of the electric wire 11 and the inner layer 25 are in wide contact, the heat from the electric wire 11 is efficiently transmitted to the protective outer skin layer 12. The heat transferred to the inner layer 25 is transferred to the outer skin 26 and dissipated to the outside. Thus, the heat generated from the electric wire 11 is efficiently dissipated to the outside through the protective outer skin layer 12.

  As shown in FIGS. 1 and 2, the cable 13 is inserted into a metal (for example, aluminum alloy, stainless steel, copper alloy, etc.) pipe 29 and is shielded by the pipe 29. Although not shown in detail, the cross-sectional shape of the pipe 29 is substantially a perfect circle like the cable 13. The outer peripheral surface of the cable 13 and the inner peripheral surface of the pipe 29 are in contact with each other, so that the cable 13 is held in the pipe 29 so as not to move in the axial direction or to rotate in the circumferential direction. ing.

  A cable 13 extends to the right from the right end edge of the pipe 29 in FIG. 1, and this cable 13 is attached to the cable protection skin layer peeling device 10 (not shown in detail). Corresponding to the cable holding mechanism of the present invention, the cable protection outer layer peeling device 10 holds the pipe 29 in a state where the outer peripheral surface of the pipe 29 is sandwiched. As described above, the cable 13 is held in the pipe 29 so as not to move in the axial direction or rotate in the circumferential direction. It does not move in the direction.

  As shown in FIG. 1, at the right end of the annular rotating body 17, a transverse blade pushing mechanism 31 that moves the transverse blade 18 in the axial direction of the cable 13 (direction indicated by the arrow B), and the axis of the cable 13 A cable support adjustment mechanism 33 that can move the cable support 32 arranged in a position symmetrical to the crossing blade 18 in the axial direction of the cable 13 (direction indicated by the arrow C) is attached. In FIG. 1, for the sake of convenience, the transverse blade pushing mechanism 31 is disposed on the upper side and the cable support portion adjusting mechanism 33 is disposed on the lower side. However, as described above, the annular rotator 17 is rotatably disposed. Therefore, the positions of the crossing blade pushing mechanism 31 and the cable support adjustment mechanism 33 are not limited to the arrangement shown in FIG.

  The crossing blade push-in mechanism 31 includes a rod 35A, and the rod 35A can be driven in the axial direction of the cable 13 (direction indicated by the arrow B). A laminated body in which the transverse blade 18 is sandwiched between the reinforcing plate 36 and the pressing plate 37 is screwed to the end of the rod 35 </ b> A in the axial center direction of the cable 13 with a bolt 38.

  As shown in FIGS. 2 and 3, the crossing blade 18 has an elongated plate shape, and is arranged in a posture in which the direction perpendicular to the plate surface faces the axial direction of the cable 13. A blade 44 along the circumferential direction of the cable 13 is provided at the edge of the crossing blade 18 on the cable 13 side. The cutting edge of the blade 44 has a substantially arc shape.

  On the other hand, the cable support portion adjusting mechanism 33 includes a rod 35B, and the rod 35B can be driven in the axial direction of the cable 13 (direction indicated by the arrow C). A cable support portion 32 is screwed with a bolt 38 to an end portion on the inner side in the axial center direction of the cable 13 in the rod 35B.

  As shown in FIG. 1, a support body 39 that supports the cable 13 in contact with the cable 13 is provided in the left-right direction (the axial direction of the cable 13) ) And has a substantially T-shape when viewed from the side. As shown in FIG. 3, a region of the support portion main body 39 that contacts and abuts the cable 13 forms a part of an arcuate surface and is an arcuate receiving surface 50 that receives the cable 13. The cable 13 is firmly supported by the cable support portion 32 by the arc-shaped receiving surface 50. A stepped portion 40 that is retracted outward in the axial direction of the cable 13 is formed at the left end portion of the support portion main body 39 in FIG. 1. As shown in FIG. The right end portion is supported, and the cable 13 terminal extending from the right end edge of the pipe 29 is supported by the right end portion of the support portion main body 39. The height dimension of the stepped portion 40 is set to be substantially the same as the thickness dimension of the pipe 29. Thus, even when the cable 13 is inserted into the pipe 29, the cable 13 can be securely held without being inclined on the support body 39.

  In FIG. 1, a longitudinal blade 42 (described later) is connected to the cable 13 via a mounting member 41 extending in the left-right direction on the right side of the pressure cylinder 34 of the crossing blade pushing mechanism 31 (on the axial end side of the cable 13). A vertical blade push-in mechanism 43 that attaches to the protective outer skin layer 12 of the cable 13 by being moved in the axial direction is attached. The longitudinal blade push-in mechanism 43 includes a rod 35C, and the rod 35C can be driven in the axial direction of the cable 13 (direction indicated by the arrow D). A longitudinal blade 42 is screwed to the end of the rod 35 </ b> C on the axially inner side of the cable 13 with a bolt 38 while being sandwiched between a pair of pressing plates 37.

  As shown in FIGS. 2 and 3, the longitudinal blade 42 has an elongated plate shape, is in a posture such that the direction along the plate surface is parallel to the axial direction of the cable 13, and FIG. It is arranged in a posture inclined to the upper right. A blade 44 along the axial direction of the cable 13 is provided at the edge of the longitudinal blade 42 on the cable 13 side. The blade 44 of the longitudinal blade 42 is arranged to face the transverse blade 18 at a position closer to the axial end side (right side in FIG. 2) of the cable 13 than the blade 44 of the transverse blade 18. Thus, since the longitudinal blade 42 is disposed at a position facing the crossing blade 18, the cable support portion 32 is disposed at a position symmetrical to the longitudinal blade 42 with respect to the axis of the cable 13. .

  Then, the peeling process of the cable 13 protective skin layer 12 using the cable protective skin layer peeling apparatus 10 which concerns on Embodiment 1 is demonstrated.

(Cable holding process)
First, the outer peripheral surface of the pipe 29 is gripped by the clamp 30 with the cable 13 inserted into the pipe 29 and with the end of the cable 13 facing rightward in FIG. As described above, since the inner peripheral surface of the pipe 29 and the outer peripheral surface of the cable 13 are in close contact with each other, gripping the pipe 29 can prevent the cable 13 from relatively moving in the axial direction, and the cable 13 can be It is possible to prevent relative rotation in the circumferential direction.

(Cable support process)
Subsequently, the cable support adjustment mechanism 33 is driven to move the rod 35B inward in the axial direction of the cable 13, and the cable support 32 attached to the rod 35B is moved inward in the axial direction of the cable 13. The support body 39 of the cable support portion 32 contacts the outer peripheral surface of the cable 13 from the outside in the axial direction of the cable 13, and the stepped portion 40 contacts the outer peripheral surface of the pipe 29 in the axial direction of the cable 13. Abut. Accordingly, the cable 13 can be supported by the cable support portion 32 without being bent.

(Transverse blade pushing process)
With the pipe 29 and the cable 13 supported by the cable support portion 32, the transverse blade pushing mechanism 31 is driven to move the rod 35A inward in the axial direction of the cable 13, so that the rod 35A is attached to the rod 35A. The transverse blade 18 is moved inward in the axial direction of the cable 13. The transverse blade pushing mechanism 31 is operated until the blade 44 of the transverse blade 18 bites into the outer skin 26 of the protective skin layer 12 and the blade 44 of the transverse blade 18 does not reach the inner layer 25 of the protective skin layer 12. Then, the blade 44 of the transverse blade 18 is in a state of being bitten into the outer skin 26 of the protective outer skin layer 12 of the cable 13. At this time, since the cable 13 is supported by the cable support portion 32 disposed at a position facing the transverse blade 18 with respect to the cable 13, when the transverse blade 18 is bitten into the outer skin 26 of the protective skin layer 12. It is possible to prevent the cable 13 from bending and the pressing force of the transverse blade 18 from escaping.

(Annular rotating body rotation process)
Subsequently, with the blade 44 of the transverse blade 18 biting into the outer skin 26 of the protective outer skin layer 12 of the cable 13, the servo motor 24 for the annular rotating body is driven. Then, the driving force of the servo motor 24 for the annular rotating body is transmitted to the annular rotating body 17 via the servo motor side gear 23 and the annular rotating body side rotating gear, and the annular rotating body 17 rotates. Then, the transverse blade pushing mechanism 31 and the transverse blade 18 attached to the annular rotator 17 also rotate. When the annular rotating body 17 is rotated around the cable 13, the transverse blade 18 turns around the cable 13 with the blade 44 biting into the outer skin 26 of the protective outer skin layer 12 of the cable 13. An annular slit 45 (indicated by a two-dot chain line in FIG. 2) is formed in the outer cover 26 in a ring shape in the circumferential direction of the cable 13. Since the crossing blade pushing mechanism 31 and the cable support adjustment mechanism 33 are attached to the annular rotator 17, both mechanisms 31 and 33 rotate together with the annular rotator 17. Therefore, while the annular rotator 17 is rotating, an annular slit 45 is formed in the outer skin 26 of the protective outer skin layer 12 in a state where the pressing force from the transverse blade 18 is supported by the cable support portion 32. It has become. Thereby, the annular slit 45 can be reliably formed in the outer skin 26 of the protective outer skin layer 12.

(Vertical blade pushing process)
Next, the longitudinal blade pushing mechanism 43 is driven to move the rod 35C inward in the axial direction of the cable 13, so that the longitudinal blade 42 attached to the rod 35C is brought inward in the axial direction of the cable 13. Move. At this time, the longitudinal blade pushing mechanism 43 is operated until the blade 44 of the longitudinal blade 42 bites into the outer skin 26 of the protective skin layer 12 and the blade 44 of the longitudinal blade 42 does not reach the inner layer 25 of the protective skin layer 12. . Then, the blade 44 of the longitudinal blade 42 is in a state of being bitten into the outer skin 26 of the protective outer skin layer 12 of the cable 13. At this time, since the cable 13 is supported by the cable support portion 32 disposed at a position facing the longitudinal blade 42 with respect to the cable 13, when the longitudinal blade 42 bites into the outer skin 26 of the protective outer skin layer 12. It is possible to prevent the cable 13 from bending and the pressing force of the longitudinal blade 42 from escaping. Thereby, the longitudinal slit 46 extending in the axial direction of the cable 13 can be reliably formed in the outer skin 26 of the protective outer skin layer 12.

  Note that the crossing blade pushing step, the annular rotating body rotating step, and the longitudinal blade pushing step may be executed in the reverse order to the above, or may be executed simultaneously.

(Blade moving process)
The drive mechanism with the blade 44 of the transverse blade 18 biting into the portion of the annular slit 45 located on the extension of the longitudinal slit 46 and the blade 44 of the longitudinal blade 42 biting into the longitudinal slit 46 (Not shown) is driven. Then, a driving force is transmitted to the frame moving mechanism 19, and the frame 15 moves along the linear guide 47 to the axial end side of the cable 13 (right side in FIG. 2). Thereby, the wall surface on the terminal side (the right side in FIG. 2) of the cable 13 among the inner wall surfaces of the annular slit 45 by the plate surface of the transverse blade 18 attached to the annular rotating body 17 supported by the frame 15, It is pressed from the left. At this time, in order to improve the heat dissipation of the electric wire 11, the inner layer 25 of the protective outer skin layer 12 is in contact with the outer surface of the electric wire 11, and the thickness dimension of the inner layer 25 is varied depending on the circumferential direction. A large frictional force acts between the inner layer 25 of the outer skin layer 12 and the electric wire 11. For this reason, there is a concern that the protective outer skin layer 12 may remain if only the outer skin 26 of the protective outer skin layer 12 is pressed against the terminal side of the cable 13 by the crossing blade 18.

  In view of the above points, in this embodiment, the longitudinal blade 42 having the blades 44 along the axial direction of the cable 13 is also bited into the outer skin 26 of the protective outer skin layer 12, and the transverse blade 18 is moved in the axial direction of the cable 13. It was configured to move to the terminal side. As a result, the longitudinal blade 42 also moves toward the axial end of the cable 13, so that the longitudinal slit 46 along the axial direction of the cable 13 formed by the longitudinal blade 42 receives a force in the tearing direction from the longitudinal blade 42. . When the crossing blade 18 and the longitudinal blade 42 are further moved, the longitudinal slit 46 extends while being cleaved toward the axial end of the cable 13. In this state, the wall on the terminal side (the right side in FIG. 2) of the cable 13 is pressed from the left side of the inner wall surface of the annular slit 45 by the crossing blade 18, so that the protective outer skin layer 12 has the longitudinal slit 46. Is peeled off from the electric wire 11 starting from (see FIG. 4).

  As described above, according to the present embodiment, since the protective outer skin layer 12 can be peeled off from the electric wire 11, the cable 13 has a large frictional force between the electric wire 11 and the protective outer skin layer 12. However, the protective outer skin layer 12 can be easily peeled off.

  Further, since the cable support portion 32 is arranged at a position symmetrical to the transverse blade 18 and the longitudinal blade 42 and the axis of the cable 13, the transverse blade 18 and the longitudinal blade 42 are connected to the outer skin 26 of the protective skin layer 12. It is possible to prevent the cable 13 from being bent and the pressing force from both the blades 18 and 42 to escape when the cable 13 is bitten. Thus, the annular slit 45 and the longitudinal slit 46 extending in the axial direction of the cable 13 can be reliably formed in the outer skin 26 of the protective outer skin layer 12.

  In addition, since the cable support 32 is moved in the axial direction of the cable 13 by the cable support adjusting mechanism 33, the cable support without bending the cable 13 even when the cable 13 having a different diameter is used. 32 can be reliably supported. And since the area | region which opposes and contacts the cable 13 among the support part main bodies 39 of the cable support part 32 has comprised a part of circular arc surface, the cable 13 and the support part main body 39 surface-contact. As a result, the cable 13 is firmly supported by the cable support portion 32.

  Further, the transverse blade 18 and the longitudinal blade 42 are moved to the axial end side of the cable 13 by the blade moving mechanism such as the linear guide 47 and the frame moving mechanism 19. Compared with the case where 42 is moved by a separate mechanism, the number of parts can be reduced. Moreover, in this embodiment, since the crossing blade 18 also serves as a stripping jig, the number of parts can be reduced.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. In this embodiment, the linear guide 47 provided on the base 14 (corresponding to the stripping jig moving mechanism and the longitudinal blade moving mechanism of the present invention) includes a frame moving mechanism 19 (the stripping jig moving mechanism of the present invention). To the linear guide 47 via the longitudinal blade mounting frame moving mechanism 51 (corresponding to the longitudinal blade moving mechanism of the present invention) on the right side (corresponding to the axial direction end side of the cable 13). On the other hand, it is slidably attached. The base 14 and the longitudinal blade attachment frame moving mechanism 51 are provided with a drive mechanism (not shown). By driving this drive mechanism, the longitudinal blade attachment frame 52 moves in the left-right direction (the direction indicated by the arrow A in FIG. 1). ) Can be moved.

  The vertical blade mounting frame 52 is formed to extend upward in FIG. 5 from the vertical blade mounting frame moving mechanism 51, and the vertical blade mounting frame 52 has a rotation shaft (not shown) in a through hole (not shown) penetrating in the left-right direction. Is inserted. A plate-like rotating member 53 is attached to the left end portion of the rotating shaft, while a rotating member side gear 54 is attached to the right end portion of the rotating shaft. A servo motor side gear 55 is fitted below the rotating member side gear 54, and a longitudinal blade servo motor 56 is attached to the right side of the servo motor side gear 55. By driving the longitudinal blade servomotor 56, a driving force is transmitted through the servomotor side gear 55 and the rotating member side gear 54, so that the rotating member 53 rotates.

  As shown in FIG. 5, a longitudinal blade pushing mechanism 43 that moves the longitudinal blade 42 in the axial direction of the cable 13 (direction indicated by arrow E) is attached to the left end of the rotating member 53. In FIG. 5, for the sake of convenience, the vertical blade pushing mechanism 43 is disposed at a position near the upper end of the rotating member 53. However, since the rotating member 53 is rotatably arranged as described above, the vertical blade pushing mechanism is provided. The position of 43 is not limited to the arrangement of FIG.

  Since the configuration other than the above is substantially the same as that of the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.

  Then, the peeling process of the cable 13 protective skin layer 12 using the cable protective skin layer peeling apparatus 10 which concerns on Embodiment 2 is demonstrated. In addition, about the process same as Embodiment 1, the overlapping description is abbreviate | omitted. First, similarly to the first embodiment, a cable holding process, a cable support process, a transverse blade pushing process, an annular rotating body rotating process, and a longitudinal blade pushing process are performed.

(Transverse blade movement process and longitudinal blade movement process)
The drive mechanism with the blade 44 of the transverse blade 18 biting into the portion of the annular slit 45 located on the extension of the longitudinal slit 46 and the blade 44 of the longitudinal blade 42 biting into the longitudinal slit 46 (Not shown) is driven. Then, the driving force is transmitted to the frame moving mechanism 19 and the longitudinal blade mounting frame moving mechanism 51, and along the linear guide 47, the frame 15 and the longitudinal blade mounting frame 52 are connected to the axial end side of the cable 13 (rightward in FIG. 2). ) Thereby, the longitudinal slit 46 is extended to the axial direction terminal side of the blade 44 cable 13 of the longitudinal blade 42. On the other hand, due to the plate surface of the transverse blade 18 attached to the annular rotator 17 supported by the frame 15, the wall surface on the terminal side (right side in FIG. 2) of the cable 13 among the inner wall surfaces of the annular slit 45 is left. It is pressed from the direction. As a result, the protective outer skin layer 12 is peeled off from the electric wire 11 starting from the longitudinal slit 46.

  Thus, according to this embodiment, since the protective outer skin layer 12 can be peeled off from the electric wire 11, even if the cable 13 has a large frictional force between the electric wire 11 and the protective outer skin layer 12, The protective outer skin layer 12 can be easily peeled off.

  The longitudinal blade moving process may not be performed simultaneously with the crossing blade moving process. That is, in a state where the blade 44 of the longitudinal blade 42 is bitten into the longitudinal slit 46, the longitudinal blade 43 is moved to the axial end side of the cable 13 by the longitudinal blade moving mechanism (vertical blade mounting frame moving mechanism 51, linear guide 47, etc.). After moving and extending the longitudinal slit 46 to the end of the cable 13 in advance, in the same manner as described above, the transverse blade pushing process and the annular rotating body rotating process are performed to form the annular slit 45, and then You may perform a crossing blade movement process.

  As described above, when the longitudinal slit 46 is extended to the end of the cable 13 in advance prior to the transverse blade moving step, a plurality of longitudinal slits 46 may be formed as follows.

  That is, first, with the blade 44 of the longitudinal blade biting into the longitudinal slit 46, the longitudinal blade is moved toward the axial end of the cable 13 in the same manner as described above, and the longitudinal slit 46 reaches the end of the cable 13. Extend. Next, the longitudinal blade pushing mechanism 43 is driven to raise the rod 35C. Then, the longitudinal blade moves outward in the axial direction of the cable 13 and is separated from the longitudinal slit 46.

  In this state, a drive mechanism (not shown) is driven to move the longitudinal blade mounting frame 52 to the left side in FIG. 5 to the start position when the longitudinal slit 46 is formed. Subsequently, the longitudinal blade servomotor 56 is driven. Then, the driving force of the longitudinal blade servomotor 56 is transmitted to the rotating member 53 via the servomotor side gear 55 and the rotating member side gear 54, and the rotating member 53 rotates. When the rotating member 53 rotates by a predetermined angle, the longitudinal blade servomotor 56 is stopped.

  Next, in the same manner as described above, the longitudinal blade pushing process and the longitudinal blade moving process are performed to form another longitudinal slit 46 in the protective outer skin layer 12, and the other longitudinal slit 46 is formed at the end of the cable 13. To extend. By repeating this step a predetermined number of times, a plurality of vertical slits 46 extending to the end of the cable 13 are formed in the protective outer skin layer 12.

  Thereafter, the blade 44 of the transverse blade 18 is bitten into a portion of the annular slit 45 located on the extension of any one of the plurality of longitudinal slits 46, and the transverse blade moving step is performed. By forming a plurality of vertical slits 46 in this way, the protective skin layer 12 is easily turned up when the protective skin layer 12 is pressed against the transverse blade 18, so that the protective skin layer 12 is further easily peeled off.

<Other embodiments>
The present invention is not limited to the embodiment described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the present embodiment, the configuration is such that three wires 11 are arranged on one cable 13, but this is not a limitation, and two or four or more wires 11 are arranged on one cable 13. It is good also as a structure to be made.

  (2) In the present embodiment, the electric wires 11 are arranged in a stacked manner in the protective outer skin layer 12. However, the present invention is not limited to this, and the electric wires 11 may be arranged in a line. May be arranged in line with each other.

  (3) In this embodiment, although it was set as the structure which penetrates the same three electric wires 11 in the one cable 13, it is not restricted to this, For example, the electric wire for electric power, the electric wire for signal, May be inserted into one cable 13.

  (4) In the present embodiment, the protective outer skin layer 12 is composed of two types, the inner layer 25 and the outer skin 26, but is not limited thereto, and may be composed of one type. Moreover, it is good also as a structure which consists of three or more types of multiple layers.

(5) In the present embodiment, one crossing blade 18 is provided for one cable protection skin layer stripping device 10, but this is not a limitation, and one cable protection skin layer stripping device 10 is provided. Two or more may be provided.
For example, when two crossing blades 18 are provided, the two crossing blades 18 may be arranged at positions facing each other. Accordingly, since the transverse blades 18 can receive each other the force applied to the cable 13 when the transverse blade 18 bites into the protective outer skin layer 12, the bending of the cable 13 can be suppressed, and an annular slit is formed in the protective outer skin layer 12. 45 is easily formed.
For example, when three or more crossing blades 18 are provided, the crossing blades 18 are arranged at equal intervals in the circumferential direction of the cable 13, so that the cable 13 The crossing blades 18 can receive the force applied to each other.
As described above, the cable support portion 32 can be omitted when the transverse blades 18 can receive each other the force applied to the cable 13 when the transverse blade 18 bites into the protective outer skin layer 12.

(6) In the present embodiment, one longitudinal blade 42 is provided for one cable protection skin layer stripping device 10, but this is not a limitation, and one cable protection skin layer stripping device 10 is provided. Two or more may be provided.
For example, when two longitudinal blades 42 are provided, the two longitudinal blades 42 may be arranged at positions facing each other. As a result, since the longitudinal blades 42 can receive each other the force applied to the cable 13 when the longitudinal blade 42 bites into the protective outer skin layer 12, it is possible to suppress the bending of the cable 13, and the longitudinal blade 42 is applied to the protective outer skin layer 12. 42 becomes easy to bite.
Further, for example, when three or more longitudinal blades 42 are provided, the longitudinal blades 42 are arranged at equal intervals in the circumferential direction of the cable 13, so that the cable 13 is inserted into the protective outer skin layer 12. The longitudinal blades 42 can receive the force applied to each other.
As described above, when the longitudinal blades 42 can mutually receive the force applied to the cable 13 when the longitudinal blade 42 is bitten into the protective outer skin layer 12, the cable support portion 32 can be omitted.

  (7) In the present embodiment, the crossing blade 18 also serves as a stripping jig. However, the crossing blade 18 and the stripping jig may be arranged separately. Thereby, the freedom degree of design increases in the shape of the stripping jig and the like. For example, by forming the stripping jig wide, it is possible to increase the pressing force by increasing the area when the protective outer skin layer 12 is pressed, and the protective outer pavement 12 can be easily stripped. . Further, it is possible to adopt a configuration in which the blade 44 is not provided at the tip of the stripping jig. In this case, it is possible to prevent the insulating coating 27 of the electric wire 11 from being damaged.

  (8) In the present embodiment, the support body 39 of the cable support 32 is formed with the arcuate receiving surface 50 for receiving the cable 13. However, the present invention is not limited to this, and the support body 39 is flat. There may be.

  (9) In the first embodiment, the crossing blade pushing mechanism 31 and the longitudinal blade pushing mechanism 43 are configured to be attached to the annular rotating body 17 via the attachment member 41. However, the configuration is not limited thereto, and the longitudinal blade pushing mechanism 43 is not limited thereto. May be configured to be attached to a member different from the annular rotator 17.

The partially cutaway side view of the cable protection outer layer peeling apparatus according to the first embodiment Partial enlargement of the cable protection skin layer stripping device Partially enlarged sectional view showing a state in which the transverse blade and the longitudinal blade have digged into the protective sheath layer of the cable Partially enlarged front view showing the state in which the protective sheath layer of the cable is peeled off while turning up The partially cutaway side view of the cable protection outer layer peeling apparatus according to the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Cable protective outer layer peeling apparatus 11 ... Electric wire 12 ... Protective outer layer 13 ... Cable 15 ... Frame 16 ... Bearing 17 ... Annular rotating body (blade turning mechanism)
18 ... Crossing blade (stripping jig)
19 ... Frame moving mechanism (blade moving mechanism, stripping jig moving mechanism)
22 ... Annular rotating body side gear (annular rotating body drive mechanism, blade turning mechanism)
23 ... Servo motor side gear (annular rotating body drive mechanism, blade turning mechanism)
24. Servo motor for annular rotating body (annular rotating body drive mechanism, blade turning mechanism)
30 ... Clamp (cable holding mechanism)
DESCRIPTION OF SYMBOLS 31 ... Crossing blade pushing mechanism 32 ... Cable support part 33 ... Cable support part adjustment mechanism 42 ... Longitudinal blade 43 ... Longitudinal blade pushing mechanism 45 ... Annular slit 46 ... Longitudinal slit 47 ... Linear guide (blade moving mechanism, stripping jig movement) Mechanism, longitudinal blade moving mechanism)
50 ... Arc-shaped receiving surface 52 ... Vertical blade mounting frame moving mechanism (vertical blade moving mechanism)

Claims (9)

A plurality of electric wires are surrounded by a protective outer skin layer that is in contact with the outer peripheral surface thereof, and the protective outer skin layer of the cable is used for a cable in which the thickness of the protective outer skin layer varies depending on the circumferential position. A device for stripping
A cable holding mechanism for holding the cable so as not to move in the axial direction;
A transverse blade having a blade along the circumferential direction of the cable;
A transverse blade pushing mechanism for moving the transverse blade in the axial direction of the cable to cause the blade of the transverse blade to bite into the protective skin layer;
A blade turning mechanism that forms an annular slit of a predetermined depth in the protective skin layer by turning the transverse blade around the cable in a state where the blade of the crossing blade bites into the protective skin layer;
A longitudinal blade having a blade along the axial direction of the cable;
By moving the longitudinal blade in the axial direction of the cable, the blade of the longitudinal blade is bitten into the position of the end of the cable with respect to the annular slit in the protective outer skin layer. A longitudinal blade push-in mechanism that forms a longitudinal slit along
A longitudinal blade moving mechanism that moves the longitudinal blade to the axial end side of the cable in a state where the blade of the longitudinal blade is biting into the longitudinal slit,
A stripping jig that forms a plate shape, the plate surface of which faces the axial direction of the cable, and the tip of the plate bites into the annular slit,
A stripping jig for moving the stripping jig toward the axial terminal side of the cable in a state where the tip of the stripping jig is bitten into a portion of the annular slit located on the extension of the longitudinal slit A cable protection outer layer peeling device comprising a moving mechanism. A plurality of electric wires are surrounded by a protective outer skin layer that is in contact with the outer peripheral surface thereof, and the protective outer skin layer of the cable is used for a cable in which the thickness of the protective outer skin layer varies depending on the circumferential position. A device for stripping
A cable holding mechanism for holding the cable so as not to move in the axial direction;
A transverse blade having a blade along the circumferential direction of the cable;
A transverse blade pushing mechanism for moving the transverse blade in the axial direction of the cable to cause the blade of the transverse blade to bite into the protective skin layer;
A blade turning mechanism that forms an annular slit of a predetermined depth in the protective skin layer by turning the transverse blade around the cable in a state where the blade of the crossing blade bites into the protective skin layer;
A longitudinal blade having a blade along the axial direction of the cable;
By moving the longitudinal blade in the axial direction of the cable, the blade of the longitudinal blade is bitten into a position on the end side of the cable with respect to the annular slit in the protective skin layer to form a longitudinal slit. A longitudinal blade pushing mechanism;
A stripping jig that forms a plate shape, the plate surface of which faces the axial direction of the cable, and the tip of the plate bites into the annular slit,
In the state where the tip of the stripping jig is bitten into a portion of the annular slit located on the extension of the vertical slit, and the blade of the vertical blade is bitten into the vertical slit, the stripping is performed. A cable protection outer layer stripping device comprising a stripping jig and a blade moving mechanism that moves the longitudinal blade toward the axial end of the cable. 2. The blade turning mechanism includes an annular rotator that is supported by a frame via a bearing and allows the cable to pass through a hollow interior, and an annular rotator drive mechanism that rotates the annular rotator. Or the cable protection outer skin layer peeling apparatus of Claim 2. In a position symmetrical to the transverse blade and / or the longitudinal blade with respect to the axis of the cable, the force applied to the cable is received when the transverse blade and / or the longitudinal blade bites into the protective outer skin layer. The cable protection outer layer peeling apparatus according to any one of claims 1 to 3, wherein a cable support portion for supporting the cable is provided. 5. The cable protection skin layer peeling apparatus according to claim 4, further comprising a cable support portion adjustment mechanism for moving the cable support portion in an axial direction of the cable. . The cable protection outer layer peeling apparatus according to claim 4 or 5, wherein an area of the cable support portion facing the cable is an arc-shaped receiving surface. The cable protection outer layer peeling apparatus according to any one of claims 1 to 6, wherein the peeling jig is the transverse blade. A method for stripping the protective skin layer of a cable in which a plurality of wires are surrounded by a protective skin layer in contact with the outer peripheral surface, and the thickness of the protective skin layer is different depending on the circumferential direction. There,
A cable holding step for holding the cable so as not to move in the axial direction;
A transverse blade pushing step of causing a blade of the transverse blade to bite into the protective outer skin layer by moving a transverse blade having a blade along the circumferential direction of the cable in the axial direction of the cable;
A blade turning step of forming an annular slit of a predetermined depth in the protective skin layer by turning the transverse blade around the cable in a state where the blade of the crossing blade bites into the protective skin layer;
By moving a longitudinal blade having a blade along the axial direction of the cable in the axial direction of the cable, the blade of the longitudinal blade is moved closer to the end of the cable than the annular slit in the protective outer skin layer. A longitudinal blade pushing step for forming a longitudinal slit along the axial direction of the cable by biting into the position;
With the blade of the vertical blade biting into the vertical slit, a vertical blade moving step of moving the vertical blade toward the axial end of the cable;
A transverse blade moving step of moving the transverse blade for moving the transverse blade toward the axial end of the cable in a state where the transverse blade is bitten into a portion of the annular slit located on the extension of the longitudinal slit; Perform the cable protection skin layer peeling method. A method for stripping the protective skin layer of a cable in which a plurality of wires are surrounded by a protective skin layer in contact with the outer peripheral surface, and the thickness of the protective skin layer is different depending on the circumferential direction. There,
A cable holding step for holding the cable so as not to move in the axial direction;
A transverse blade pushing step of causing a blade of the transverse blade to bite into the protective outer skin layer by moving a transverse blade having a blade along the circumferential direction of the cable in the axial direction of the cable;
A blade turning step of forming an annular slit of a predetermined depth in the protective skin layer by turning the transverse blade around the cable in a state where the blade of the crossing blade bites into the protective skin layer;
By moving a longitudinal blade having a blade along the axial direction of the cable in the axial direction of the cable, the blade of the longitudinal blade is moved closer to the end of the cable than the annular slit in the protective outer skin layer. A longitudinal blade pushing step for forming a longitudinal slit along the axial direction of the cable by biting into the position;
In the state where the blade of the transverse blade is bitten into a portion of the annular slit located on the extension of the longitudinal slit, and the blade of the longitudinal blade is bitten into the longitudinal slit, the transverse blade and A cable protection outer layer peeling method for performing both blade moving steps of moving the longitudinal blade toward the axial end of the cable.

Images