• 专利附录
  • 专利说明
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    • 专利摘要:
    A casing cutting device (10) making an incision in a sheathing (2a) of an insulated electrical conductor (2) is characterized by a disk cutter (1a, 1b) having an incision in the sheathing (2a) of the electric wire (2 ), a lifting unit which raises and lowers the disc cutter (1a, 1b) in the vertical direction (Y-axis direction), and a transverse displacement unit which projects the disc cutter (1a, 1b) in the left-right direction (X-axis direction) - and moves back, wherein the disc cutter (1a, 1b) during cutting into the sheath (2a) of the electrical line (2) is displaced from the lifting unit and the transverse displacement unit, so that it circulates the circumference of the electrical line, wherein under displacement a contact point of the disc cutter (1a, 1b) on the casing (2a) an incision in the sheath (2a) of the electrical line (2) is provided.
    公开号:CH710236A2
    申请号:CH01565/14
    申请日:2014-10-15
    公开日:2016-04-15
    发明作者:Ishigure Kanji
    申请人:Asahi Seiki Co Ltd；
    IPC主号:
    专利说明:

    Technical area
    The present invention relates to a sheath cutting device which makes an incision in a sheath at the front end of an electrical cable with insulation sheath.
    General state of the art
    There are various types of electrical lines, and Fig. 13 shows, for example, an electrical line 52. This electrical line 52 is constructed in three layers and has in its center a core wire 52c, an insulating layer 52b surrounding the core wire 52c and an insulating layer 52b surrounding protective layer 52a. When the electric wire 52 is used for connection to various electrical devices, a terminal or the like is attached to the front end of the electric wire 52, and therefore, the insulating layer 52b and the protective layer 52a must be removed. The protective layer 52a and the insulating layer 52b that are removed are referred to as a sheath.
    As a device for removing the sheath, a line sheath stripping device 60 shown in Fig. 13 is used in the prior art. The lead sheath stripping apparatus 60 has a rectangular cutter 51 symmetrically disposed with respect to the center O of the electric wire 52, the cutter 51 clamping the electric wire 52 from above and below. In this state, the cutter 51 rotates about the center O of the electric wire 52 as a rotation axis around the electric wire 52, and gradually cuts into the casing. Next, when the cutter 51 has made a cut just before the core wire 52c, it peels and removes the protective layer 52a and the insulating layer 52b.
    However, as described above, in the case of the casing cutter 60, as the cutter 51 gradually cuts into the casing during rotation about the electric wire 52, as shown in Fig. 13, providing an incision takes a certain time. The provision of an incision denotes the process, wherein the cutter is cut to just before the core wire and a state is reached in which the casing can be removed in a subsequent step by means of a stripping blade or the like.
    In the case of the sheath cutter 60, the cutter 51 simply rotates around the center O of the electric wire 52 as a rotation axis around the electric wire 52, and gradually makes an incision, whereby an incision can be made in the sheath around the core wire 52c , This is possible because the working object of the sheath cutter 60 is mainly the electric wire 52, with the protective layer 52a, the insulating layer 52b and the core wire 52c concentrically spreading from the center point O.
    In cases where the core wire and the cladding do not propagate concentrically from the center, such as an electrical line 32, as shown in Fig. 5a, wherein the insulating layer 32b and the core wire 32c are offset from the center O. or in an electric line 42, as shown in Fig. 5b, which has two core wires 42c, the core wire is damaged in the event of being cut by the sheath cutter 60 to a point where removal is possible it is not possible to provide an incision on the shell.
    Disclosure of the invention
    Object of the present invention
    Therefore, the present invention provides a sheath cutter having an adjustable-circumference cutter, wherein providing a notch is less time-consuming as compared to the prior art, and an incision can be provided even with different types of electrical leads without damaging the core wire.
    Means for solving the problem
    In order to achieve the above object, the sheath cutting apparatus of the present invention is a sheath cutting apparatus which makes an incision in a sheathing of an electric wire with insulation sheath, characterized by a disk cutter having an incision in the sheathing of the electric wire a lifting unit which raises and lowers the disc cutter in the vertical direction (Y-axis direction) and a transverse displacement unit which advances and retracts the disc cutter in the left-right direction (X-axis direction), the disc cutter being cut into the Sheath of the electrical line is displaced by the lifting unit and the transverse displacement unit, so that it rotates around the circumference of the electrical line, with displacement of a contact point of the disc cutter on the sheath an incision in the sheathing of the electrical Le provided.
    According to the features described above, the slitter is displaced during cutting into the sheathing of the electrical line from the lifting unit and the transverse displacement unit, so that it circulates the circumference of the electrical line, and also a contact point of the disc cutter is displaced on the sheath Therefore, as will be discussed below with reference to FIGS. 1 and 2, the cutting speed is higher than in the prior art lead sheath stripping apparatus 60. As a result, the amount of cutting increases, so that the time required to provide an incision can be reduced. Further, as will be discussed below with reference to Figs. 1 and 2, displacing the contact point of the disc cutter on the shell further includes both the case where the disc cutter rotates and the case that it does not rotate.
    According to the above-described features, the disc cutter can move freely in the XY-axis direction around the circumference of the electric wire, therefore, in various electric wires, as shown for example in Fig. 5a and b, without damaging the core wire, an incision can be provided in the sheath.
    In a preferred embodiment, the disc cutter of a first disc cutter, which moves approximately about half of the core wire circumference of the electric wire around, and a second disc cutter, wherein the first disc cutter makes an incision approximately in half of the circumference of the casing and the second disc cutter makes an incision in the remaining half of the sheath, thereby making an incision in the entire circumference of the sheath.
    According to the described feature, the disc cutter with two disc cutters can each cut half of the circumference of the electric wire, without moving around it by 360 degrees. If the disc cutter were to move 360 degrees around the electrical lead, an element supporting the disc cutter would have to be formed so as not to obstruct the electrical conduction, which would entail a complicated structure, but if the disc cutter respectively Half cuts, there is no risk of obstruction of the electrical line through the device, and the structure of the device is simple and their manufacturing costs are reduced.
    According to the described feature, two disc cutters are used for cutting the entire circumference, whereby a pitting of the blades is reduced accordingly, so that the blades must be reground less frequently. This prolongs the life of the disc cutter and reduces the frequency of replacement of the blades, ultimately reducing the labor cost and producing an inexpensive shell cutting device.
    The first disc cutter and the second disc cutter are respectively displaced from the lifting unit and the transverse displacement unit such that they cut into the sheathing of the electric wire while moving around the electric wire, and also the contact point of the disc cutters shifted the sheath.
    In a preferred embodiment, the sheath cutting device comprises a detection device which detects a contact between the core wire of the electric wire and the first and second disc cutter, wherein the sheath cutting device upon detection of a contact by the detection device, the relative position between the individual disc cutters and the Core wire measures and calculates the orbit of the orbital motion by about half of the Kerndrahtaussenumfangs of the electrical line based on the position ratio for each disc cutter.
    When according to the described feature, for example, there is a mounting error between the first and second disc cutter or the actual center of the core wire and the radius deviate from the specifications and are not known, by measuring the relative positional relationship of the core wire to the first and second disc cutter the center of the actually mounted first and second disc cutter the respective orbit are derived individually. Subsequently, by moving along the derived orbit, the first and second slitter cutters of the casing cutter can cut the casing around the entire circumference of the electric wire without damaging the core wire.
    In addition, the sheath cutting device is characterized in that the disc cutter has a rotating device which is rotatable in any direction and at any speed.
    According to the described features, the disc cutter can be rotated even at any speed in any direction, which is why, as will be described later with reference to FIG. 2, the incision provided with even higher cutting speed and reduces the time required even further can be suppressed and also by reducing the cutting speed wear of the cutting edge can be suppressed.
    Effect of the invention
    As described above, the present invention achieves an excellent effect as compared with the prior art in that the provision of an incision is less time-consuming and an incision can be provided even with different types of electrical leads without damaging the core wire.
    Brief description of the figures
    In the drawings:<Tb> FIG. FIG. 1 is a schematic view illustrating the principle of operation of a disk cutter of a casing cutter of the present invention; FIG.<Tb> FIG. Fig. 2 is a schematic view illustrating the principle of operation of a disk cutter of another example of a casing cutter of the present invention;<Tb> FIG. 3 </ RTI> the orbit at which the slitter shifts when the shell cutting apparatus of the present invention provides a cut on an electric wire;<Tb> FIG. 4a <SEP> peeling off the sheath by inserting a stripping blade into the notch provided by the sheath cutting apparatus of the present invention; and<Tb> FIG. 4b <SEP> the electrical line whose sheathing has been removed;<Tb> FIG. FIGS. 5a and 5b illustrate the provision of a cut on various electrical leads by the shell cutting apparatus of the present invention;<Tb> FIG. Fig. 6 is a schematic view illustrating the basic idea of the operation of a slicer of a slitter cutter having two slicing cutters of the present invention;<Tb> FIG. FIGS. 7a and 7b show the provision of a cut on various electrical leads by the shell cutting apparatus with two slitters of the present invention;<Tb> FIG. Fig. 8a <SEP> is a front view of the shell cutting apparatus with two slitters and;<Tb> FIG. Fig. 8b is a front view of a replaceable disc cutter unit used when the sheath cutter of the present invention comprises a single disc cutter<Tb> FIG. FIG. 9 is a simplified explanatory view illustrating that when providing a cut on an electric wire by a disk cutter, the core wire may be damaged when the core wire of the electric wire is staggered or there is a mounting error of the disk cutters;<Tb> FIG. FIG. 10 is a simplified explanatory view illustrating a shell cutting apparatus with two slitters of the present invention; FIG.<Tb> FIG. 11 is an explanatory view of a configuration of a detection device provided to the case cutting apparatus of the present invention, wherein FIG<Tb> FIG. Fig. 11a <SEP> is a simplified side view of the electrical lead of Fig. 10;<Tb> FIG. 11b <SEP> is a circuit diagram formed between the disc cutter and the electrodes of an electrode element,<Tb> FIG. 11c <SEP> a change in the capacity between the disc cutter and the electrode member when the disc cutter cuts into an electric wire, and<Tb> FIG. 11d <SEP> is a simplified view of the condition when the disk cutter comes into contact with the core wire;<Tb> FIG. Fig. 12 is a simplified view illustrating how, after providing an incision in the electrical conductor sheath by the sheath cutting apparatus of the present invention, only the sheath is peeled off with a stripping blade;<Tb> FIG. 13 <SEP> is an example of a prior art sheath cutting apparatus; and<Tb> FIG. FIG. 14 shows an example of a prior art shell cutting apparatus illustrating the basic idea of the operation of its blade. FIG.
    Explanation of the reference numbers
    [0021]<Tb> 1 <September> slicer<tb> 2 <SEP> electrical wiring<Tb> 2 <September> jacket<Tb> 10 <September> sheath cutter<Tb> 120 <September> transverse displacement unit<Tb> 140 <September> lifting unit
    Embodiments of the invention
    In the following, the reduction of the time required by a sheath cutter 10 of the present invention (see Fig. 1) to provide a cut as compared to the prior art shroud cutter 60 will be described.
    First, to derive the cutting speed VI of the prior art shroud cutting apparatus 60, it is assumed that a cutter 61a rotates in the direction of the arrow at an angle θ with a center O of an electric wire 62 as shown in FIG. 14.
    The cutting start position on a sheath 62a of the electric wire 62 at the start of cutting by the cutter 61a is a position Al on the outer circumference of the sheath 62a. B1 denotes a contact point of the cutter 61a on the case 62a. As the cutter 61a begins to rotate, it becomes cutter 61b and the cutting position on the casing 62a moves from A1 to A1.
    The contact point of the cutter 61b on the casing 62a after cutting remains at B1 and does not shift. Namely, since the cutter 61 rotates about the center O of the electric wire 62 as a rotation axis, the contact point at B1 remains and does not shift on the cutter 61.
    This means for the cutting speed V1:Since the distance A1 A1 = rθis the cutting speed V1 = rθ / tHere, r is the radius of the electrical line 62.The term "cutting speed" in the present description refers to the "cutting quantity per unit of time".
    Next, with reference to Fig. 1, the cutting speed V2 of the shell cutting apparatus 10 of the present invention will be derived. The disc-shaped disc cutter 1 is stopped by a rotation regulating means (brake) that it does not rotate. Since this disc cutter 1 is displaced so that it circumscribes the outer circumference of the electric wire 2 while cutting into the casing 2a, its trajectory is a circular path L. The disc cutter 1 shifts on this circular path L during a time t in the direction of the arrow (opposite clockwise) by an angle θ.
    The cutting start position on a casing 2a at the beginning of cutting by the disk cutter 1a is a position A1 on the outer circumference of the casing 2a. B1 denotes a contact point of the disc cutter la on the casing 2a. When the disk cutter 1a shifts, the cutting position on the casing 2a moves to A1.
    The contact point of the disc cutter 1 on the casing 2a is prior to the displacement of the disc cutter la B1, but after moving the disc cutter 1b to B1. That is, the contact point of the disc cutter 1 on the casing 2a moves together with the displacement of the disc cutter 1 on the circumference of the disc cutter 1 of B1 in the direction of B1 and thus shifts (in Fig. 1 down). Thus, while the contact point of the disc cutter 1 is displaced on the casing 2a, an incision is provided on the casing 2a of the electric wire 2. Since the disk cutter 1 does not rotate but stands still, a vertex T1 at the top of the disk cutter 1a at the disk cutter 1b has not shifted after the displacement.
    This means for the cutting speed V2:Since the distance A1 A1 = rθand the distance B1 B1 = r θis the cutting speedV2 = (A1 A1 + B1 B1) / t = rθ / t + r θ / tHere, r is the radius of the disc cutter 1.Thus, it can be seen that the cutting speed V2 of the shell cutting apparatus 10 of the present invention is higher than the cutting speed V1 of the prior art shell cutting apparatus 60. As the cutting speed increases, so does the amount of cutting, which reduces the time required to provide an incision in the sheath of the electrical lead.
    Next, with reference to Fig. 2, a cutting speed V3 is derived in the case where the disk cutter 11 of the casing cutter 20 of the present invention is rotated by a rotating device. The disk cutter 11 rotates clockwise (freely rotating) by the angle α during a time t, while all other operations correspond to those of the casing cutter 10 of FIG. In the case of the casing cutting device 20, the contact point of the disk cutter 11 on the casing 12a, as compared with FIG. 1, shifts by the rotation of the disk cutter 11, that is to say by r α. The displacement distance B1 B1 of the contact point of the disk cutter 11b from FIG. 2 is thereby greater than the displacement distance B1 B1 of the contact point of the disk cutter 1b from FIG. 1. Thus, even when the disk cutter 11 is rotated in this manner, as in Fig. 1, a cut is provided on the casing 2a of the electric wire 2 while the contact point of the disk cutter 1 is displaced on the casing 2a.
    This means for the cutting speed V3:Since the distance A1 A1 = rθthe distance B1 B1 = r | θ + α |is the cutting speedV3 = (A1 A1 + B1 B1) / t = rθ / t + r '| θ + α | / t
    By rotating the disc cutter 11, the cutting speed V3 can thus be increased even further compared to the cutting speed V2. The time required to provide an incision in the sheathing of the electrical line is thus further reduced.
    In Fig. 2, the disc cutter 11 is rotated clockwise, but the disc cutter 11 can of course also be rotated counterclockwise. Since, in this case, the angle of rotation is positive for α in the clockwise direction, a negative value for the distance B1 B1 results in the calculation against a rotation over the angle θ in the counterclockwise direction. Therefore, the B1 B1 assumes an absolute value. When the disk cutter 11 is rotated counterclockwise, the angle α is applied in a range to satisfy the condition θ <| θ + α | satisfied, the cutting speed V3 is greater than the cutting speed V2.
    When the rotation of the disc cutter 11 is counterclockwise and the disc cutter 11 is rotated so that the cutting speed V3 is smaller than the cutting speed V2 (when α is used), the wear of the cutting edge of the disc cutter 11 is suppressed, and the Lifetime of the disc cutter can be extended. However, because of V2> V3, the condition θ> | θ + α | be fulfilled.
    When the rotation of the disk cutter 11 is counterclockwise and the disk cutter 11 cuts into the casing 12a in rolling contact with the casing 12a, the wear of the cutting edge of the disk cutter 11 decreases, and also the cutting resistance decreases. Specifically, the distance A1A1 over which the disc cutter 11 shifts at the casing 12a during the time t, and the distance B1B1 over which the contact point of the disc cutter 11b is displaced during the time t should be equal, therefore it is necessary that the condition rθ = r | θ + a | is fulfilled. By using the rotary device in this way, the disc cutter 11 can be rotated in any direction at any speed, and the optimum cutting operation for the respective need is made possible.
    Next, referring to Fig. 3, an example of the orbit at which the disc cutter 21 displaces when the sheath cutter 30 of the present invention provides a cut on an electric wire 22 will be described. In FIG. 3, a circular path L1 and a circular path L2 running around the circumference of the electrical line 22 are present which touch each other at a contact point S. The disc cutter 21 moves on the circular path L1 so as to approach from a position P1 to a position P2 of the electric wire 22. When the disc cutter 21 reaches the position P2, it changes to the circular path L2 and shifts further there to position P3 and P4. Since the disc cutter 21 thus displaces along the circular paths L1 and L2, the protective layer 22a and the insulating layer 22b of the sheath can be easily cut. When the disc cutter 21 again reaches the position P2, it changes to the circular path L1 and shifts to position P5.
    The circular paths L1 and L2 are defined in the XY coordinate system, and by adjusting the coordinate values according to need, an orbit can be easily generated depending on the type of the electric line. The disc cutter 21 is controlled by the lifting unit and the transverse displacement unit in its X and Y displacement so as to follow this orbit.
    Next, Fig. 4a shows how, after providing an incision N in the sheath of the electrical lead 22 through the disc cutter 21 (see Fig. 3), the sheath is withdrawn. A stripping blade 23 clamps the incision N on the electric wire 22 from above and below, and is displaced in this state toward the front end of the electric wire 22. Thus, as shown in Fig. 4b, only the sheath (protective layer 22a and insulating layer 22b) is peeled off, while at the front end of the electric wire 22, only the core wire 22c remains.
    Next, with reference to Fig. 5, the provision of an incision on various electrical leads is illustrated. In the case of an electrical line 32 from FIG. 5 a, the insulating layer 32 b and the core wire 32 c are offset with respect to the center O of the electrical line 32. As in the prior art lead sheath stripping apparatus 60, when the cutting edge having the center O of the electric wire 32 is rotated as a rotation axis and cut until peeling is possible, the core wire 32c is damaged, and there is a problem that no incision is made on the lead wire Sheath section can be provided.
    On the other hand, in the wiring jacket stripping apparatus 40 of the present invention, the disk cutter 31 is displaced at the orbit L3 so as to orbit the outer circumference of the electric wire 32, so this problem does not occur. On the left and right of the center O of the electric wire 32, moreover, the thickness of the sheath portion (protective layer 32a and insulating layer 32b) is different. Thus, when the disk cutter 31 is positioned on the left side of the thick-walled electric wire 32, by increasing the rotational speed of the disk cutter 31 by means of the rotating device, the cutting speed can be increased and the cutting amount can be increased. In turn, with an electric wire in which the hardness of the cladding material is different depending on the location on the cladding portion and, for example, positioning is performed on a hard part of the cladding material, it is possible to increase the rotational speed of the blade and the cutting speed by means of the rotating means increase in order to increase the cutting performance, or on the contrary to reduce the speed and suppress wear of the cutting edge, so that the speed can be optimally adjusted according to the purpose.
    Next, Fig. 5b shows an electrical lead 42 having two core wires. If cutting is carried out on this electric wire 42 with the wire sheath stripping device 60 until peeling is possible, the core wire 42c is damaged and no cut can be provided on the sheath portion (protective layer 42a and insulating layer 42b). In the lead sheath stripping apparatus 50 of the present invention, on the other hand, the disc cutter 41 shifts on the orbit L4 so that a cut can be provided on the sheath portion.
    Next, a sheath cutting apparatus with two slicing machines will be described. In the case of the sheathing cutter 50 having two disc cutters, the displacement path (orbit) of the individual disc cutters deviates from that of the sheath cutter 10 with a disc cutter. Nevertheless, with two disc cutters each independent of the free rotation of Fig. 1 to 5 can be realized, and the speed and the direction of rotation of the disc cutter is adjustable as needed.
    Fig. 6 is a front view showing an embodiment of a shell cutting apparatus having two disc cutters. In this figure, top and bottom correspond respectively to the top and bottom geographical terms, and in the following description, the left-right direction is the X-axis direction and the vertical direction is the Y-axis direction, while the direction perpendicular to the paper surface is the Z-axis direction ,
    As shown in Fig. 6, the electric wire 102 includes a protective layer 102a, an insulating layer 102b, and a core wire 102c. The reference numeral 131 above the electric wire 102 denotes a first disk cutter and the reference numeral 132 a second disk cutter.
    The dashed line 133 is an endless control belt, and the trajectory of the timing belt 133 is formed by arranging a drive pulley 134 and five guide pulleys 135 in the form of an opening-facing C, such that an opening width P is provided in that between the two cutters 131, 132, the electric wire 102 can be made with play, and a depth H is formed, which ensures that a lower end of the electric wire 102 with play can overcome the common center line Q of the cutters, a disc cutter unit 130 is formed by these elements.
    Thus, when the drive pulley 134 is driven clockwise in the arrow direction by a servomotor, etc. (not shown) in the figure, the timing belt 133 runs on the illustrated orbit, and therefore, the first disc cutter 131 and the second disc cutter 132 move in the same direction rotate clockwise. When the peripheral speed of the driving pulley 134 is increased, the running speed of the timing belt 133 also increases, so that the rotational speed of the cutters 131, 132 with respect to the protective layer 102a and the insulating layer 102b can be easily adjusted to an optimum rotational speed. That is, the drive pulley 134 is a rotating device that freely rotates the first disc cutter 131 and the second disc cutter 132, so that both cutters can be rotated freely at any rotational speed in any rotational direction.
    The reference numerals R1 to R6 denote the trajectory of a cutting edge 131a of the first disc cutter 131, and when the first and second disc cutters 131, 132 are in the position shown, during the rotation of the two cutters (that is, the free rotation), first only a shift on the movement path R1 in the left direction and then a decrease in the trajectory R2, and after from the uppermost portion of the electrical line 102 from the protective layer 102a and the insulating layer 102b were cut in their respective thickness and the cutting edge 131a in a clockwise direction on the trajectory R3 has the right half of the outer peripheral surface of the core wire 102c, it now descends on the trajectory R4 and moves away, whereupon the trajectory R5 and the trajectory R6 is returned to the original position.
    According to the movement paths R1 to R6 of the first disc cutter 131, an incision is made approximately in the right half of the protective layer 102a and the insulating layer 102b of the electric wire 102.
    The reference numeral R7, in turn, is the trajectory of a cutting edge 132a of the second disc cutter 132 at which the protective layer 102a and the insulating layer 102b, and forms a symmetrical trajectory with respect to a vertical line to the trajectories R1 to R6 of the first disc cutter 131, passing through the center 0 of the electric wire 102. In accordance with the movement path R7, a cut can be made in the same way on the remaining half circumference of the protective layer 102a and the insulating layer 102b of the electrical line 102.
    These trajectories R1 to R6 and R7 can be easily achieved by the disc cutter unit 130 (see Fig. 8a) on which the first and second disc cutters 131, 132 are rotatably supported, simultaneously in the X and Y axis directions is positioned.
    According to the present cutting method can be cut with the first disc cutter 131 and the second disc cutter 132 each about half the circumference of the sheath (protective layer 102a and insulating layer 102b) of the electrical line 102, which is why both cutters 131, 132 ultimately cut across the entire Cover the circumference.
    In the illustrated trajectories R1 to R6 and R7 of the first and second disc cutter 131, 132 is located between the trajectories R1 to R6 and the trajectory R7, a distance, but this is done only for the sake of simplicity for descriptive purposes, while the trajectories are in Overlay the practice to some extent, whereby the entire outer circumference of the core wire 102c can be provided with certainty with an incision.
    When the first disc cutter 131 has cut the protective layer 102a and the insulating layer 102b in an area slightly beyond the half of the circumference, the second disc cutter 132 may intersect, or vice versa. That is, preferably, the two disc cutters 131, 132 complementarily cut the entire circumference of the protective layer 102a and the insulating layer 102b. In this sense, for the peripheral area of the first and second disc cutters 131, 132 with respect to the protective layer 102a and the insulating layer 102b, the present invention uses the term "half of circumference" or "half circumference".
    The full-circumference protective layer 102a and insulating layer 102b are then peeled off the core wire 102c in the process of FIG. 4.
    Next, with reference to Fig. 7, it will be seen how the two-slitter sheathing cutter of the present invention provides a cut in various types of electrical conduction. 7a, the sheathing, that is to say the protective layer 202a and the insulating layer 202b, and the core wire 202c are offset from the center O of the electrical line 202, while in the case of an electrical line 302 from FIG. 7b, a plurality of core wires 302c is present.
    In the case of the case cutting apparatus of the present invention, since the disc cutter unit 130 (see FIG. 8a on which the first and second disc cutters 131, 132 are rotatably mounted) is simultaneously positioned in X and Y axis directions, control can be provided Describing a trajectory be performed in which the core wire is not damaged.
    Concretely, as shown in Fig. 7a, while the two cutters are rotated (that is, rotate freely), first, a shift in the movement path R11 in the left direction. This trajectory R11 is a trajectory extending from the cutting edge 131a to a vertical line passing through the center O of the core wire 202c. Next, a depression is made on the trajectory R12, and after the protective layer 202a and the insulating layer 202b are cut through in their respective thickness from the uppermost portion of the electric wire 202 and the cutting edge 131a in the clockwise direction on the trajectory R13 the right half of the outer peripheral surface of the core wire 202c, it now descends on the trajectory R14 and moves away, whereupon a return to the original position takes place via the trajectory R15 and the trajectory R16.
    The reference character R17, in turn, is a trajectory extending from the cutting edge 132a of the second disc cutter 132 to a vertical line passing through the center O of the core wire 202c, and has a displacement distance corresponding to the trajectory R11 of the first Disk cutter 131 corresponds. Next, a trajectory R18 line-symmetrical to the trajectories R12 to R16 of the first disc cutter 131 with respect to the line passing through the center O of the core wire 202c will be described as a symmetry axis. According to the movement path R18, a cut can be made in the same way on the remaining half circumference of the protective layer 202a and the insulating layer 202b of the electrical line 202.
    Next, as shown in Fig. 7b, reference numerals R21 to R26 denote trajectories of the cutting edge 131a of the first disc cutter 131, and when the first and second disc cutters 131, 132 are in the illustrated position, the two First turn the cutter (ie rotate freely) and move in the left direction at the movement path R21. Next, a depression is made on the trajectory R22, and with displacement from the middle portion of the electric wire 302 to the right, the protective layer 302a and the insulating layer 302b are cut in their respective thickness, whereupon the cutting edge 131a on the trajectory R23 the right outer periphery of the core wire 302c rotates clockwise and then lowered at the movement bank R24 and removed and then returns via the movement path R25 and the movement path R26 in the original position.
    The reference character R27, in turn, is the trajectory of the cutting edge 132a of the second disc cutter 132 and forms a symmetrical trajectory relative to a trajectory R21 to R26 of the first disc cutter 131 with respect to a vertical line as the axis of symmetry passing through the center O of the electrical lead 302 runs. According to the movement path R27, a cut can be made in the same way on the remaining half circumference of the sheath-forming protective layer 302a and insulating layer 302b of the electrical line 302.
    Next, with reference to Fig. 8, the structure of a shell cutting apparatus having two slitters of the present invention will be described.
    Fig. 8 is a front view of the casing cutter 100, and at the top and bottom of the figure, the top and bottom are the same, and as in Fig. 6, the left-right direction is the X-axis direction, the vertical direction is Y. -Axis direction and the direction perpendicular to the paper surface is the Z-axis direction. The electrical line 102 shown in vertical section is fastened with a clamping device, not shown.
    The components of the casing cutting apparatus 100 of the present invention roughly include a base 110, the slicing unit 130, the lifting unit 140 that raises and lowers the slicing unit 130 in its entirety vertically (in the Y-axis direction), the transverse displacement unit 120 that holds the slicing unit 130 and the lifting unit 140 moves back and forth integrally in the left-right direction of the figure (in the X axis direction), and a control panel 150 (XY axis control apparatus), the servomotors of the individual units 120, 130, 140 operate commands in X and or Y-axis direction to bring them in the X and Y-axis direction in a desired position.
    For the description of the individual components, the base 110 is a common base of the sheath cutting device 100 of the present invention, which is rectangular in a direction in which it intersects the axis of the electric wire 102, and on which the transverse displacement unit 120 is attached.
    The transverse displacement unit 120 reciprocates the disc cutter unit 130 and the elevating unit 140 integrally in the left-right direction of the figure (in the X-axis direction), and is composed of a transverse displacement servomotor 121 whose clutch 122, a pair of left and right bearings 123, a ball screw unit 124 supported between the bearings 123, a support block 125 of the lift unit 140 fixed to a nut 124a of the ball screw unit 124, and an LM guide 126 guiding the support block 125 in a left-right direction.
    Thus, when the transverse displacement servomotor 121 rotates reciprocally, the ball screw 124 also reciprocally rotates, and the nut 124a shifts transversely between the position shown by the solid line and the position shown by the two-dot chain line. The nut 124a also displaces the support block 125 on the LM guide 126, and since the entire lift unit 140 is fixed to the support block 125, the lift unit 140 can also be shifted in the left-right direction (X-axis direction)
    The lifting unit 140, in turn, serves to raise and lower the entire disc cutter unit 130 vertically (in the Y-axis direction) between the two-dot broken lines, and has substantially the same configuration as the transverse displacement unit 120 of the disc cutter unit 130.
    That is, it is composed of a lift-up base 141 disposed on the support block 125, a lift servo motor 142 fixed to the top of the lift-up base 141, its drive control disk 143, a driven control disk 144, a timing belt 145 interposed the two slides, a pair of upper and lower bearings 146, a ball screw unit 147 carried between the bearings 146, 146, a support block: 148 of the disc cutter unit 130, which is secured to a nut 147a of the ball screw unit, and an LM guide 149 constructed carrying the support block 148 and leads vertically.
    Thus, when the elevating servo motor 142 reciprocally rotates, the drive control disc 143 is driven, and its drive torque is transmitted from the timing belt 145 to the driven control disc 144, whereby the ball screw 147 rotates reciprocally. As the ball screw 147 reciprocally rotates, the nut 147a raises and lowers the support block 148.
    When the support block 148 moves up and down, the entire slicer unit 130 is also moved up and down between the position shown by the solid line and the position shown by the two-dot chain line in the figure.
    The disc cutter unit 130 serves to circumscribe each of the protective layer 102a and the insulating layer 102b on the electric wire 102 one by one, and make an incision therein to finally make an incision on the entire circumference, and with the exception that the Arrangement and orientation of their components differs from that of FIG. 6, their basic cutting principle is the same.
    On the support block 148, instead of the disc cutter unit 130, a disc cutter unit 230 shown in Fig. 8b may also be attached. This disc cutter unit 230 has a single disc cutter 231 and, as a rotating device, a servomotor 232 which freely rotates the disc cutter 231. Since the servomotor 232 can rotate at any speed in any direction of rotation, and the disc cutter coupled thereto 231 can be rotated at any speed in any direction of rotation. A brake is also received in the servomotor 232 so that the disc cutter 231 can be fixed so as not to rotate.
    In this way, since the case cutting apparatus 100 can position the slice cutter unit 130 in the X and Y directions, the first disc cutter 131 and the second disc cutter 132 attached to the disc cutter unit 130 can be mounted as shown in Figs. 7 as well as in FIGS. 9 and 10 described below, are positioned in the X and Y directions and shift at an arbitrary trajectory. When the disc cutter unit 230 shown in FIG. 8b is attached to the case cutting apparatus 100, this disc cutter unit 230 can be positioned in the X and Y directions, and thus the disc cutter 231 is mounted in X and Y positions as shown in FIGS. 3 and 5. Direction can be positioned and can move to any trajectory.
    A method will now be described, wherein in the event that the center position and the diameter of an electrical line deviate from the specifications or there is an assembly error on the disc cutter, using a detection device a. Orbit of the disc cutter can be generated in order to provide an incision without damaging the core wire.
    First, the orbit of the disc cutter will be described with reference to Fig. 9a in terms of ideal values, wherein the core wire is not offset to the center and the center position and the diameter of the core wire correspond to the specifications. The first disc cutter 131 and the second disc cutter 132 are mounted exactly symmetrical to an axis of symmetry P1, whose center is O1.
    In Fig. 9a, when only the insulating layer 402b is to be cut without damaging the core wire 402c of the electric wire 402, the first disk cutter 131 may rotate at a circular arc trajectory R31 that is separated by a certain distance (W1 + W2) Center O2 of the core wire 402c is removed. The second disc cutter 132 can rotate on a movement path R32 which is line-symmetrical to the movement path R31 on an axis of symmetry P1 which passes through the center O2. W1 denotes the radius of the core wire 402c and W2 the radius of the first disk cutter 131 and the second disk cutter 132. In the present embodiment, there is mentioned a circular arc trajectory R31 which is a certain distance (W1 + W2) away from the center O2 of the core wire 402c is, but depending on the situation, a circular arc-shaped trajectory R31 is possible, which is offset by a small distance α, that is by a certain distance (W1 + W2 + α). The same applies to the trajectory of other disc cutters in the present description.
    Next, referring to FIG. 9b, it should be assumed that, in practice, a center O2 of the core wire 502c of the electric wire 502 deviates from the specification center O2, and further that a radius W1 of the core wire 502c deviates from the specification radius W1, or that in practice the mounting position of the first disc cutter 131 deviates and a center C1 of the first disc cutter 131 deviates from the predetermined center C1 of the intended first disc cutter 131.
    In this case, when the first disc cutter 131 rotates on the moving path R31 from the center C1, the first disc cutter 131 can not completely cut through the insulating layer 502b as shown in FIG. 9b, or it may damage the core wire 502c. As shown in FIG. 9b, when the second disc cutter 132 rotates along the moving path R32, the second disc cutter 132 can not completely cut through the insulating layer 502b, or it may damage the core wire 502c because the core wire 502c is offset.
    In other words, if the center point or radius of the core wire given in advance from the specifications and the orbits R31 and R32 derived from the design position of the disk cutter are used unchanged, the above problems arise.
    Therefore, referring to Fig. 10, a method will be described in detail, wherein an orbit is created with which the first disc cutter 131 and the second disc cutter 132 can rotate so as to surely cut the insulating layer 502b without the core wire In this case, W1 denotes the actual radius of the core wire 502c.
    First, referring to FIG. 10a, an orbit R41 of the first disc cutter 131 is to be derived. Due to an assembly error, the center C1 of the first disc cutter 131 deviates from the design center C1.
    In this state, the first disk cutter 131 is first displaced from the center C1 by an arbitrary distance LXA in the X direction. Next, the first disc cutter 131 cuts into the insulating layer 502b and moves in the Y direction by the distance LYA until it comes in contact with the core wire 502c. The center position of the first disc cutter 131 at this time is referred to as the center position A.
    Concretely, the contact between the first disc cutter 131 and the core wire 502c is detected by a detection device 600 which, upon detection of a contact, interrupts the displacement of the first disc cutter 131 in the Y direction and measures the displacement distance LYA. By setting the center C1 of the first slicer 131 as the origin of an XY coordinate system U131, the XY coordinate of the center position A is (-LXA, -LYA). The center position A shows the relative position of the first disk cutter 131 and the core wire 502c with reference to the XY coordinate system U131.
    Now, to measure a center position other than the center position A, the above-described operation is repeated to shift the first disc cutter 131 from the center C1 in the XY direction until it comes in contact with the core wire 502c. As a result, in contact with the core wire 502c, a center position B (-LXB, -LYB) and a center position C (-LXC, -LYC) of the first disk cutter 131 are obtained.
    The center positions A, B, C are, as shown in Fig. 10a, points on a circumference of a circle J1 whose radius is (W1 »+ W2) and whose center is the center O2 of the core wire 502c. The center point and the radius of the circle J1 can be calculated from the coordinates of the center positions A, B, C.
    Specifically, a line divided vertically into two equal parts connecting the center positions A and B and a line divided vertically into two equal parts intersecting the center positions B and C intersect at the center O2. Thus, by calculating the intersection of the two lines divided vertically into two equal parts, the coordinates of the center O2 can be determined. The coordinates of the center O2 of the circle J1 can therefore be calculated based on the coordinates of the center positions Ä to C. Next, the distance between the center O2 and the center position O (or the center position A or B) is calculated to find the radius of the circle J1.
    Thus, as shown in Fig. 10a, a circumferential trajectory R41 on which the first disc cutter 131 does not damage the core wire 502c is the right semicircular arc of the circle J1 having the center and radius as calculated above. This trajectory R41 is based on coordinates of the XY coordinate system U131. By, after deriving the trajectory R41, the first disc cutter 131 moves away from the center C1 and, as shown in Fig. 10a, orbits the trajectory R41, it can incise the insulating layer 502b forming the sheath without damaging the core wire 502c.
    Thus, even if the actual center C1 of the first disc cutter 131 deviates from the design center C1 by an assembly error, and also the center O2 of the core wire 502c deviates from the specified center O2, by measuring the relative positional relationship between the actual center C1 and the electric wire 502 is derived the trajectory R41 related to the center C1, and the first disc cutter 131 can cut the insulating layer 502b without damaging the core wire 502c.
    Next, referring to FIG. 10b, an orbit R42 of the second disc cutter 132 is to be derived. The second disc cutter 132 has no assembly error and its position corresponds to the design. However, the center position of the core wire 502c deviates, and also the exact radius is unknown, therefore a trajectory R42 has to be deduced to surely cut the insulating layer 502b and not damage the core wire 502c. Although it is assumed here that the second disc cutter 132 has no assembly error, even if there is an assembly error, for example, as with the first disc cutter 131, a trajectory in which the core wire 502c is not damaged can be derived by the following method.
    The method for deriving the movement path R42 of the second disc cutter 132 corresponds to the method for deriving the movement path R41 of the first disc cutter 131 described with reference to FIG. 10a, for which reason it will only be briefly described below.
    First, as shown in Fig. 10b, the second disc cutter 132 is first displaced from the center C2 by an arbitrary distance LXD in the X direction. Until the detecting device 600 detects contact of the second disk cutter 132 with the core wire 502c at a center position D, it is displaced by the distance LYD in the Y direction.
    By setting the center C2 of the first slicer 132 as the origin of an XY coordinate system U132, the XY coordinate is the center position D (-LXD, -LYD). Now, as described above, the process of bringing the second disk cutter 132 into contact with the core wire 502c from the center point C2 in the XY direction is repeated, and the center position E (LXE, -LEE) and the center position F (LXF, -LYF) become obtained. The center positions D, E and F show the relative position of the second disc cutter 132 and the core wire 502c with reference to the XY coordinate system U132.
    The center positions D, E, F are, as shown in Fig. 10b, points on a circumference of a circle J2 whose radius is (W1 + W2) and whose center is the center 02 of the core wire 502c. The center point and the radius of the circle J2 can be calculated from the coordinates of the center positions D, E, F (see calculation using the center point positions of Fig. 10a).
    Thus, as shown in Fig. 10b, a circumferential trajectory R42 on which the second disc cutter 132 does not damage the core wire 502c is the left semicircular arc of the circle J2 having the center and radius as calculated above. This trajectory R42 is based on coordinates of the XY coordinate system U132. By moving the movement of the trajectory R42, the second disc cutter 132 moves from the center C2 and, as shown in Fig. 10b, rotates on the trajectory R42, it can cut the insulating layer 502b forming the sheath without damaging the core wire 502c.
    Thus, even if the center O2 of the core wire 502c deviates from the specified center O2, by measuring the relative positional relationship between the second disk cutter 132 and the core wire 502c with reference to the center C2 of the second disk cutter 132, the trajectory R42 can be derived. and the second disc cutter 131 can cut the insulating layer 502b without damaging the core wire 502c.
    In this way, even though, as shown in Figs. 10a and 10b, there is a mounting error on the first disk cutter 131 and second disk cutter 132 and, moreover, the actual center position and radius of the core wire 502c are different from the specifications and are unknown the detection device, the relative positional relationship of the first disc cutter 131 and the second disc cutter 132 to the core wire 502c measured and derived with reference to the center of the first disc cutter 131 and the second disc cutter 132, the respective trajectory individually. After deriving the trajectory, the first disc cutter 131 and the second disc cutter 132 of the sheath cutter can move the insulating layer 502b constituting the sheath around the entire periphery of the electric wire 502 by moving along the respective derived orbit without damaging the core wire 502c.
    Next, with reference to Fig. 11, the detection apparatus 600 will be described in detail. The detection apparatus 600 mainly includes an AC power source 601, an electrode member 604 electrically connected to the AC power source 601, and a detection portion 602 electrically connected to the disk cutter 131 by a connection portion 603 and a change in capacitance between the electrodes of the disk cutter 131 and the electrode element 604 recognizes.
    As shown in FIG. 11A, the electrode member 604, which is an electrode plate or the like, is disposed near the side surface of the electric wire 502 and connected to one of the disk cutter 131 and the electrode member 604 as the output side (in FIG. 11a to the electrode element 604), a desired alternating current is caused to flow as a measuring signal by the alternating current source 601. From the current flowing to the other side, that is, the receiving side (in Fig. 11a of the disk cutter 131), an initial capacity (Ca in Fig. 11c) between the electrode member 604, which is an electrode, and the disk cutter 131, the one Electrode is to be detected. In this case, a circuit is produced between the electrodes as shown in Fig. 11b, where X denotes a capacitor between the disc cutter 131 and the core wire 502c, and Y denotes a capacitor between the electrode member 604 and the core wire 502c.
    When, starting from the state of Fig. 11a, the disk cutter 131 cuts into the sheathing of the electric wire 502 and approaches the core wire 502c, the capacity starts to increase as shown in Fig. 11c, and it is recognized that the disk cutter 131 has approached close to the core wire 502c. As shown in Fig. 11d, as compared with the initial capacity Ca at the time when the slitter 131 comes in contact with the core wire 502c, the shift is many times to a dozen times (Cb in Fig. 11c). The detection section 602 recognizes from this displacement that the disk cutter 131 has come into contact with the core wire 502c. Likewise, in the disk cutter 132 electrically connected to the detection portion 602 via a connection portion 605 (see FIG. 10b), it is recognized that the disk cutter 132 has come in contact with the core wire 502c. In the present embodiment, the detection device 600 is used to detect the contact between the cutter and the core wire by means of a change in capacitance, but any other known detection device may be used, such as a device in which a DC current is flowed into the cutter and core wire and in the Contact between cutter and core wire A conductive connection between cutter and core wire is detected to detect the contact between cutter and core wire.
    Next, with reference to Fig. 12, the operation of peeling the sheath after cutting the electric wire sheath by the first and second disc cutters in accordance with the individually derived trajectory of Fig. 10 will be described in detail.
    Fig. 12a is an enlarged view of the vicinity of the electric wire 102 of Fig. 8, with the electric wire being viewed from the side (X direction). The starting point is a case in which a cut N is to be provided at a location remote from a front end 102a of the electric wire 102. A sleeve 160 is a tubular member that holds the electrical lead 102 around its periphery.
    [0103] As shown, when a notch N is to be provided at a position away from the front end 102a, the notch N is provided by circulating the circumference of the electric wire 102 by 360 degrees with the disc cutter, with the risk of causing elements that carry the disk cutter (for example, an arm 136, etc., which carries the disk cutter in FIG. 8) or other parts of the sheathing cutter hamper the electric wire 102. Therefore, it is necessary to apply various structures so as to avoid obstruction even when the electric wire 102 is rotated 360 degrees. However, as shown in Fig. 12a, the first sheeting cutter 131 makes an incision by circulating one half of the circumference above a central axis I of the electric wire 102, while the second disk cutter 132 advances by circulating one half of the circumference below a central axis I of the electric wire 102 make a cut. Thus, the disk cutters do not circumnavigate the circumference of the electric wire 102 by 360 degrees, thus enabling a simple structure without obstructing the electric wire through the devices.
    In Fig. 12a, there is a preliminary incision position M before the incision N. This provisional incision position M is the position in which the deriving operation of the orbit of the disc cutters described with reference to Fig. 10 is performed. That is, it is a position for deriving the trajectories at which the disc cutters cut into the sheathing of the electrical line. The orbit of the disc cutters derived at the provisional incision position M is the trajectory at which, as described with reference to FIG. 10, even if the center of the core wire deviates, the sheath can be cut without damaging the core wire. Next, at a position just past the provisional incision position M corresponding to the just-derived orbit, by circulating the first and second disc cutters, the incision N is provided. Thus, before the incision N is provided, a process is performed at a position just before the incision N to derive the orbit of the disc cutter.
    Next, after the incision N has been provided, the incision N is pinched from above and below by the stripping blade 170, as shown in Fig. 12b. By relocating the stripping blade 170 to the forward end 102a of the electrical lead 102 in this clamped state, only the sheath is withdrawn while leaving the core wire. Since the incision N has been provided away from the front end 102a of the electric wire 102, there is a fear that the electric wire 102 may hang down before the cut N due to its own weight. When the stripping blade 170 is displaced to the front end 102a with the electrical wire 102 down, the net weight of the electric wire 102 acts on the stripping blade 170, thereby increasing the peeling resistance. In addition, there is a risk that the stripping blade 170 will damage the core wire during peeling.
    Therefore, as shown in Fig. 12b, at the front of the stripping blade 170, a support ring 180 is provided. The support ring 180 has a ring shape through which the electrical line 102 can be passed and prevents the electrical line 102 from hanging. As the support ring 180 moves coupled to the stripping blade 170 to the front end 102a, it does not occur during of stripping the sheath, the weight of the electric wire 102 acts on the stripping blade 170. The stripping blade 170 and the support ring 180 are controlled by a motor or the like to move freely in the axial direction of the electric wire.
    权利要求:
    Claims (4)
    [1]
    A cladding cutter making an incision in a shroud at the front end of an insulated conduit comprising the following:a disk cutter which makes an incision in the sheathing of the electric wire,a lifting unit that raises and lowers the disc cutter in the vertical direction (Y-axis direction), anda Querverlagerungseinheit, the disc cutter in the left-right direction (X-axis direction) moves back and forth, characterized in thatthe slitter is displaced by the lifting unit and the transverse displacement unit during cutting into the electrical conductor sheath in such a way that it circumscribes the circumference of the electrical line,wherein the indentation is provided in the sheath of the electrical lead while the contact point of the disc cutter is displaced on the sheath.
    [2]
    2. A casing cutting apparatus according to claim 1, characterized in that the disk cutter is constructed of a first disk cutter and a second disk cutter, each circulating substantially a half circumference of the Kerndrahtaussenumfangs the electrical line, wherein the first disc cutter substantially in half of the circumference of Sheath makes an incision and the second disc cutter makes a cut in the remaining half of the circumference of the sheath, whereby an incision is made on the entire circumference of the sheath.
    [3]
    3. A casing cutting apparatus according to claim 2, characterized by a detection device which detects a contact of the first and the second disk cutter with the core wire of the electrical line,wherein the sheath cutter measures a relative positional relationship between the disk cutter and the core wire when the detection device detects a contact,wherein an orbit is calculated on the basis of the position ratio for the individual disc cutters, at which they circulate substantially half of the outer circumference of the core wire of the electrical line.
    [4]
    4. sheath cutting device according to one of claims 1 to 3, characterized in that the disc cutter has a rotating device and can rotate freely in any direction and at any speed.
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    同族专利:
    公开号 | 公开日
    CH710236B1|2018-12-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP3322053A1|2016-11-15|2018-05-16|Schleuniger Holding AG|Apparatus and method for removing a sheath for an electrical conductor|
    EP3322054A1|2016-11-15|2018-05-16|Schleuniger Holding AG|Apparatus and method for removing an internal envelope from an electrical conductor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01565/14A|CH710236B1|2014-10-15|2014-10-15|Sheath cutter.|CH01565/14A| CH710236B1|2014-10-15|2014-10-15|Sheath cutter.|
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