JP5661847B2 - Coating layer cutting device - Google Patents

Description

  The present invention relates to a coating layer cutting device that cuts a coating layer of a cable, and more particularly to a coating layer cutting device suitable for indirect hot-wire work for high-voltage electrical equipment and the like.

2. Description of the Related Art In recent years, an indirect hot wire operation in which an operator performs various operations using an indirect hot wire tool such as an insulating Yatco on a charged high-voltage distribution line (electric wire) has been performed. Indirect hot wire work requires safety and efficiency, but the work of peeling the coating layer from the electric wire is no exception.
Conventionally, peeling of the coating layer of the cable has been performed by various methods.
For example, Patent Document 1 describes an apparatus that melts and peels off a core wire by heating a coating layer. In Patent Document 1, a linear heating member is used to melt the coating layer along the longitudinal direction of the cable, and then the coating layers at both ends in the longitudinal direction of the melting line are cut or blown over the entire circumference, The layer is peeled from the core wire.
Patent Document 2 describes a scissor-like cutting tool having a pair of blade portions for cutting a coating layer. Each blade portion of the cutting tool has a pair of arc blades that cut the covering layer in an arc shape, and a vertical blade that is arranged between the arc blades and cuts the covering layer in a straight line along the longitudinal direction. doing.

JP 2001-119829 A Utility Model Registration No. 3095690

The technique described in Patent Document 1 has a problem that it is difficult to peel off the coating layer using an insulating jacket or the like since only one fusing line is formed along the longitudinal direction of the cable.
Moreover, in patent document 2, since a coating layer is divided | segmented into two in a semicylindrical form, peeling of a coating layer is easy. However, the cut coating layer is wound only half a turn around the core wire, and there is a problem that the coating layer easily falls from the core wire. In particular, since the indirect hot wire work is a work at a high place, there is a risk of causing a secondary disaster when the coating layer is dropped.
This invention is made | formed in view of the above-mentioned situation, and it aims at providing the coating layer cutting device with which peeling of a coating layer is easy, preventing the fall of the coating layer after a cutting | disconnection.

In order to solve the above-mentioned problems, the invention according to claim 1 is a covering layer cutting device for cutting a covering layer of a cable, is supported so as to be openable and closable, and surrounds the outer surface of the cable when closed. A pair of surrounding pieces and a first cutting line that is spaced apart along the axial direction of each surrounding piece to form a first cutting line that cuts the covering layer over the entire circumference when each surrounding piece is closed 2 Two first cutting means and a second cutting line which is arranged between the first cutting means and connects the first cutting lines when the surrounding pieces are closed, and at least a part of which is helical. And a second cutting means for forming at least two.
In the invention of claim 1, the first cutting means and the second cutting means cut the coating layer of the cable. The first cutting means forms two first cutting lines separated in the axial direction of the cable. In addition, at least two second cutting lines connecting the second cutting means and the first cutting lines are formed. A plurality of divided pieces capable of separating a part of the coating layer from the cable are formed by the first cutting line and the second cutting line.
The invention according to claim 2 is characterized in that each divided piece formed by each of the first cutting lines and each of the second cutting lines has a circumferential length exceeding a half circumference of the core wire.
In the invention of claim 2, each divided piece formed by cutting the coating layer winds around the core wire over a half circumference, thereby preventing the coating layer from falling after cutting.

The invention according to claim 3 is characterized in that an end of the second cutting line is spiral.
In the invention of claim 3, by making the end part of the second cutting line spiral, the circumferential end part of the divided piece formed by cutting the coating layer is deformed with a light force when the coating layer is peeled off. , Peeling becomes easy.
The invention described in claim 4 is characterized in that at least one of the first cutting means and the second cutting means is means for heating and fusing the coating layer.
In the invention of claim 4, since the coating layer is melted and cut, there is no possibility of damaging the core wire when the coating layer is cut.

The invention according to claim 5 is characterized in that at least one of the first cutting means and the second cutting means is a cutting blade.
Since the cutting means is a cutting blade, the configuration is simple.
The invention according to claim 6, rotatably connected to the hinge portion comprises a pair of operating pieces to be respectively opened and closed with each enclosing pieces, each operating piece, gripper tip of the remote control forceps It is characterized by having an adapter part which is detachably fixed to.
In the invention of claim 6, since the coating layer cutting device can be attached to the remote control yatco, the coating layer cutting device can be used for the indirect hot wire method.

According to the present invention, two first cutting lines separated in the axial direction of the cable are respectively formed over the entire circumference, and a plurality of coating layers between the first cutting lines are formed by the second cutting lines connecting the first cutting lines. Therefore, the covering layer can be easily peeled off.
Further, since at least a part of the second cutting line is spiral, even if the coating layer is divided into a plurality of divided pieces in the radial direction, the circumferential length of each divided piece can be increased, The fall of the coating layer after cutting can be prevented.

It is a perspective view which shows the coating layer cutting device which concerns on one Embodiment of this invention. (A) is the typical perspective view which showed the cutting line formed in a cable, (b) is a perspective view which shows a mode that a split piece is isolate | separated from a cable. It is a figure for demonstrating a cutting | disconnection means and a cutting line, (a) is an expanded view of an enclosure piece, (b) is an expanded view of a division | segmentation piece. It is a figure for demonstrating the other example of a cutting | disconnection means and a cutting line, (a) is an expanded view of an enveloping piece, (b) is an expanded view of a division | segmentation piece. (A), (b) is a schematic diagram which shows the structure of an electrical heating means. (A), (b) is a figure which shows the yacht for remote control with which a coating layer cutting device is mounted | worn. It is a figure which shows the adapter part of a coating layer cutting device, (a) is a perspective view, (b) is sectional drawing. It is a figure which shows the state which mounted | wore the remote control yatco with the coating layer cutting device. It is a figure for demonstrating a cutting | disconnection means and a cutting line, (a) is an expanded view of an enclosure piece, (b) is an expanded view of a division | segmentation piece. It is a figure for demonstrating a cutting | disconnection means and a cutting line, (a) is an expanded view of an enclosure piece, (b) is an expanded view of a division | segmentation piece.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention only unless otherwise specified. .

[First embodiment]
A first embodiment of the present invention will be described. FIG. 1 is a perspective view showing a coating layer cutting device according to an embodiment of the present invention. FIG. 2A is a schematic perspective view showing a cutting line formed on the cable, and FIG. 2B is a perspective view showing a state in which the divided pieces are separated from the cable.
The coating layer cutting device 1 according to the present embodiment is one of indirect live-line tip tools that are attached to the tip portion 120 of the grip portion 112 of the remote control yatco 110 (see FIG. 6), and is shown in FIG. This is an apparatus for cutting the covering layer 102 of the cable 100 having the core wire 101 and the covering layer 102 made of an insulating resin material covering the core wire 101.
The covering layer cutting device 1 is supported by the hinge portion 10 so that it can be opened and closed, and when closed, each of the surrounding pieces 20 includes a pair of surrounding pieces 20 (20a, 20b) that surround the outer surface of the cable 100 by the inner face 21. The first cutting means 23 (23a, 23b), which is spaced apart along the axial direction and cuts the coating layer 102 over the entire circumference when the surrounding piece 20 is closed, is arranged between the first cutting means 23. When the surrounding pieces 20 are closed, the second cutting means connects the first cutting lines 31 by the first cutting means 23 and forms at least two second cutting lines 33 that are at least partially spiral. 25 (25a, 25b).

The surrounding piece 20 is made of a semi-cylindrical metal material obtained by dividing a cylindrical body into two in the axial direction. When the two surrounding pieces 20 are closed and the peripheral edges contact or approach each other, the two surrounding pieces 20 form a cylindrical body. Further, when the two surrounding pieces 20 are closed, the entire circumference of the cable 100 is surrounded by the inner surface 21 thereof. The inner surface 21 of each surrounding piece 20 has a shape that matches the outer surface of the cable 100. In addition, as long as the inner surface 21 is aligned with the outer surface of the cable 100, the outer surface of the surrounding piece 20 may have any shape.
Two cutting means (a first cutting means 23 and a second cutting means) are formed on the inner surface of each surrounding piece 20 to form a cutting line having a predetermined shape on the covering layer 102 so that the covering layer 102 can be peeled off from the core wire 101. 25). The two cutting means cut the covering layer 102 when closing the surrounding piece 20.

  3A and 3B are diagrams for explaining the cutting means and the cutting line. FIG. 3A is a development view of the surrounding piece, and FIG. 3B is a development view of the divided piece. In the figure, the cutting line (solid line) formed by one surrounding piece 20a is given an alphabetic symbol a, and the cutting line (dotted line) formed by the other surrounding piece 20b is given an alphabetic symbol b. Moreover, a dotted line shows the boundary of the two surrounding pieces 20a and 20b.

The first cutting means 23 forms the first cutting line 31 in the coating layer 102. The first cutting means 23 forms two first cutting lines 31 that are separated by a predetermined distance in the axial direction. The 1st cutting line 31 is a line which cut | disconnects the coating layer 102 over a perimeter as shown in FIG. The illustrated first cutting line 31 is formed in a direction orthogonal to the axial direction, but may be a cutting line inclined with respect to the axial direction.
By forming the first cutting line 31, a part of the covering layer 102 can be separated from the cable in the middle portion of the cable 100.
The second cutting means 25 forms a spiral second cutting line 33 in the coating layer 102. The second cutting lines 33 are cutting lines that connect the first cutting lines 31 and do not cross each other, and are formed in the coating layer 102 at least two. Two second cutting lines 33 shown in the figure are formed in the covering layer 102, and the two second cutting lines 33 have the same spiral winding direction (turning direction), and their circumferential positions are shifted by a half turn.

By forming the first cutting line 31 and the second cutting line 33, a part of the coating layer 102 becomes the split pieces 103 a and 103 b that are separable (separable) from the cable 100. In this example, a split piece 103 that is spirally wound around the core wire 101 is formed.
In addition, by making the second cutting line 33 spiral, the circumferential length of each divided piece 103 can be increased compared to the case where the second cutting line is formed along the axial direction (parallel to the axial direction). Can be increased. Accordingly, it is possible to effectively prevent the divided piece 103 from falling during work. In addition, the said effect is acquired by making at least one part of the 2nd cutting line 33 helical.

It is desirable that the divided piece 103 formed by cutting has a circumferential length that exceeds the half circumference of the core wire 101. In particular, in order to effectively prevent the divided pieces 103 from spontaneously falling from the core wire 101 and to facilitate separation from the core wire 101, the second cutting lines 33 each go around the coating layer 102 once. It is desirable to set to.
Note that the first cutting line 31 and the second cutting line 33 are preferably both continuous cutting lines, but a part of the first cutting line 31 and the second cutting line 33 is not necessary if there is no inconvenience that the segment 103 cannot be separated from the cable. It does not matter if it is continuous.
Further, the spiral cutting line formed by the second cutting line 33 does not have to be a smoothly continuous spiral. 4A and 4B are diagrams for explaining another example of the cutting means and the cutting line. FIG. 4A is a developed view of the surrounding piece, and FIG. 4B is a developed view of the divided piece. For convenience of explanation, the same reference numerals as those in FIG. As shown in FIG. 4, the second cutting line 33 may be formed in a pseudo spiral shape by alternately arranging cutting lines parallel to the axial direction and cutting lines orthogonal to the axial direction. Also in this example, the spiral segment 103 is formed.

As shown in FIG. 1, the first cutting means 23 and the second cutting means 25 are formed to protrude from the inner surface of each surrounding piece 20. The first cutting means 23 is disposed at both axial ends of each surrounding piece 20, and the second cutting means 25 is disposed between the first cutting means 23.
As shown in FIG. 3, the first cutting means 23 of each surrounding piece 20 is a means for forming a part (31a, 31b) of the first cutting line 31 with respect to the coating layer 102, and the two surrounding pieces. By closing 20, a first cutting line 31 continuous with the coating layer 102 is formed. Each first cutting means of each surrounding piece 20 cuts the coating layer 102 in an arc shape.
The second cutting means 25 of each surrounding piece 20 is a means for forming a part (33a, 33b) of the second cutting line 33 with respect to the covering layer 102, and by covering the two surrounding pieces 20, A second cutting line 33 continuous with the layer 102 is formed.

Here, the first cutting means 23 and the second cutting means 25 are heating members that heat the coating layer 102 to a temperature at which it can be melted. That is, the first cutting means 23 and the second cutting means 25 are means for heating and melting the coating layer 102 to a temperature at which it can be melted. The heating member may be in any shape that can bite into the coating layer 102. For example, by making the cross-sectional shape in the direction orthogonal to the longitudinal direction (extending direction) of each heating member substantially semicircular, the heating member can bite into the coating layer while melting the coating layer.
For example, in the case of an electric wire (cable) having a nominal cross-sectional area (thickness) of 200 mm ^ 2, the thickness of the covering layer is 3 mm. Therefore, when cutting the covering layer of this electric wire, The two cutting means 25 sets the width | variety to about 2 mm and the protrusion amount from the inner surface 21 to about 3 mm. In the case of electric wires having a nominal cross-sectional area of 58 mm ^ 2 and 25 mm ^ 2, the thickness of the covering layer is 2.5 mm and 2 mm, respectively, so the width of the first cutting means 23 and the second cutting means 25 is about 2 mm. And the protruding amount is set to be substantially the same as that of the coating layer.

Thus, the 1st cutting means 23 and the 2nd cutting means 25 are taken as the magnitude | size and shape corresponding to the size of the cable which is going to cut | disconnect a coating layer. In other words, a plurality of coating layer cutting devices including a surrounding piece 20 having an inner diameter corresponding to the thickness of each electric wire, and a cutting means (heating member) having a width and a protruding amount corresponding to the thickness of the coating layer of the electric wire. 1 is prepared, and the coating layer cutting device is replaced according to the thickness of the electric wire to be cut.
The heating member melts the coating layer 102 in a groove shape according to the closing posture of the surrounding piece 20 surrounding the cable 100. When the covering layer 102 is completely melted and the heating member reaches the core wire 101, the surrounding piece 20 is completely closed, so that it can be easily determined whether or not the covering layer 102 has been cut. By using a heating member as the cutting means, it is not necessary to strongly squeeze the coating layer when cutting the coating layer, and the labor of the worker can be reduced.

An electrical heating means can be used as the heating means for raising the temperature of the heating member to a temperature at which the coating layer 102 can be melted. FIGS. 5A and 5B are schematic views showing the configuration of the electrical heating means.
FIG. 5A shows an electrical heating means (induction heating means) using induction heating. The heating unit 27 includes a coil 27A disposed along the first cutting unit 23 (or the second cutting unit 25), and a power source 27B that supplies power to the coil 27A. The heating means 27 causes the cutting means to generate an eddy current by passing an electric current through the coil 27A, thereby heating the cutting means. Therefore, a material (for example, metal) heated by induction heating is used for the cutting means.

FIG. 5B shows an electrical heating means (resistance heating means) using resistance heating. In resistance heating, Joule heat generated by passing electricity through a heating member as a heating element is used. The heating unit 27 includes a power source 27B that supplies power to the first cutting unit 23 (or the second cutting unit 25). For the cutting means, a material (for example, metal) that generates heat by resistance heating is used.
As shown in FIG. 1, the coating layer cutting apparatus 1 includes a pair of operation pieces 41 that are rotatably connected by a hinge portion 10. The surrounding piece 20 is fixed to one end of each operation piece 41, and the operation piece 41 opens and closes the surrounding piece 20 by rotating around the hinge portion 10. Moreover, the other end part of each operation piece 41 has the adapter part 50 fixed to the front-end | tip of the holding part 112 of the remote operation Yatco 110 so that attachment or detachment is possible.

6 (a) and 6 (b) are diagrams showing a remote control yatco to which a coating layer cutting device is attached.
The remote control YATCO 110 includes an insulating main shaft 111, a grip portion 112 attached to the tip of the main shaft 111, an operation portion 113 attached to the other end of the main shaft 111 to open and close the grip portion 112, and an operation portion. And an insulative connecting shaft 114 that transmits the operation of 113 to the grip portion 112 as an opening / closing operation.
The grip portion 112 has a fixed jaw 115 fixed to the main shaft 111 and a movable jaw 116 that swings with respect to the fixed jaw 115. The movable jaw 116 is connected to the connecting shaft 114 at the connecting portion 117.
The operation unit 113 includes an operation lever 118 and a connection unit 119 that connects the operation lever 118 to the connection shaft 114. The manual operation of the operation lever 118 is transmitted to the movable jaw 116 of the grasping portion 112 via the connecting shaft 114, and by operating the operation lever 118, the fixed jaw 115 and the movable jaw 116 can be close to each other to grasp an object. Freely open and close between a closed posture and an open posture in which the fixed jaw 115 and the movable jaw 116 are separated from each other.
In addition, a rib part 121 and an engagement hole 122 that are used when attaching the covering layer cutting device 1 to the grip part 112 are formed on the outer surface of the tip part 120 of the grip part 112.

7A and 7B are diagrams showing an adapter portion of the coating layer cutting device, where FIG. 7A is a perspective view and FIG. 7B is a cross-sectional view.
The adapter part 50 of the covering layer cutting device 1 extends in the insertion direction of the gripping part 112 from the insertion part 51 into which the distal end part 120 of the gripping part 112 of the remote control Yatco 110 is inserted and the opening side edge of the insertion part 51. And a slit 53. The slit 53 engages with a rib portion 121 formed to protrude from the surface of the grip portion 112.
Further, the adapter unit 50 projects the pressing pin 55 protruding and retracting into the insertion unit 51, the pin receiving unit 58 having the pin hole 57 that supports the pressing pin 55 so as to be movable in and out, and the pressing pin 55 protruding into the insertion unit 51. A coil spring 59 (elastic urging member) that urges elastically in the direction. Further, the pressing pin 55 is formed with a head portion 61 having a diameter larger than that of the pin hole 57, and the protruding amount of the pressing pin 55 into the insertion portion 51 is limited. The distal end of the pressing pin 55 engages with an engagement hole 122 formed in a concave shape on the surface of the grip portion 112 to prevent the covering layer cutting device 1 from falling off the remote control yacco 110.
The adapter unit 50 is pivotally supported with respect to the operation piece 41 by a rotation shaft 63.

FIG. 8 is a view showing a state in which the coating layer cutting device is mounted on the remote control yatco.
In order to attach the covering layer cutting device 1 to the remote control yatco 110, the head portion 61 of the pressing pin 55 is pinched and the pressing pin 55 is detached from the insertion portion 51. In this state, the distal end portion 120 of the gripping portion 112 of the remote control yatco 110 is inserted into the insertion portion 51. At this time, it inserts so that the slit 53 and the rib part 121 of the yatco 110 for remote control may engage. When the hand is released from the head portion 61, the pressing pin 55 protrudes into the insertion portion 51, the tip of the pressing pin 55 engages with the engagement hole 122, and the adapter portion 50 is fixed to the grip portion 112. In this state, the surrounding piece 20 can be opened and closed via the grip portion 112 according to the operation of the operation lever 118.
In order to remove the coating layer cutting device 1 from the remote control yacco 110, the reverse operation may be performed.

As described above, after the coating layer cutting device 1 is mounted on the remote control YATCO 110, the heating members (the first cutting means 23 and the second cutting means 25) are heated by the heating means 27. The operation lever 118 of the remote control YATCO 110 is operated to surround the cable 100 at the site where the covering layer 102 is peeled off by the two surrounding pieces 20.
When the surrounding piece 20 is opened after the surrounding piece 20 is completely closed, a first cutting line 31 and a second cutting line 33 are formed in the covering layer 102 as shown in FIG. 2A, and the covering layer 102 is cut. It will be in the state. By using a remote control yatco (FIG. 6) to which the coating layer cutting device 1 is not mounted, the divided piece 103 is picked and separated from the cable 100 in the direction of the arrow in FIG. A part of can be peeled off.

In the present embodiment, the entire second cutting line is spiral, but by making at least a part of the second cutting line spiral, the circumferential length of the divided pieces can be increased. Therefore, in the stripping operation of the coating layer at a high place, the possibility of dropping the divided pieces separated from the cable is reduced.
Moreover, the circumferential direction edge part 104 (104a, 104b: FIG.2 (b)) of a split piece by making the 2nd cutting line part (end part of a 2nd cutting line) adjacent to a 1st cutting line into a spiral shape. The axial length decreases as the distance increases. That is, the wrapping force of the split piece (the force that maintains the shape of the split piece) becomes weaker toward the circumferential end of the split piece, and the peripheral rear end 104 of the split piece when the split piece is peeled off the core wire. Is deformed with a light force, and the divided pieces can be easily detached from the core wire.
Further, since the cutting means is composed of a heating member and the coating layer is melted and cut, there is no possibility of damaging the core wire when the coating layer is cut.
Moreover, since the coating layer cutting device according to the present embodiment has a configuration in which the cable is simply sandwiched between the two surrounding pieces, there is no need for movable parts such as gears that increase the weight of the device. Therefore, the apparatus can be made compact and light, and the labor of indirect hot-line work can be reduced.

One or both of the first cutting means 23 and the second cutting line 33 may be a cutting blade having a cutting edge that bites into the coating layer 102.
The first cutting means 23 can be a fan-shaped cutting blade whose cutting edge bites into the coating layer 102 and does not bite into the core wire 101. The second cutting means 25 can be a cutting blade whose cutting edge bites into the coating layer 102 and does not bite into the core wire 101.
In addition, about a cutting | disconnection means, you may combine a heating member and a cutting blade. That is, one of the first cutting means and the second cutting means may be a heating member and the other may be a cutting blade.

[Modified Embodiment]
Hereinafter, modified embodiments of the second cutting line will be described. 9 and 10 are diagrams for explaining the cutting means and the cutting line, (a) is a development view of the surrounding piece, and (b) is a development view of the divided piece. 9 and 10, the same reference numerals as those in FIG.
The two second cutting lines 33a and 33b shown in FIG. 9 are cutting lines having different spiral winding directions (turning directions). Each of the divided pieces 103 has a shape having a circumferential length exceeding a half circumference at the axial end portion. By forming the second cutting line 33 in this manner, for example, when the left end in the axial direction in the drawing of one divided piece 103a is picked and peeled off by the remote control yatco, the other divided piece 103b may be sandwiched. Less.
Further, the second cutting line 33 shown in FIG. 10 is an example in which only both axial ends are formed in a spiral shape, and an axial intermediate portion is formed in a straight line extending along the axial direction. Thus, it is not necessary to form the entire second cutting line 33 in a spiral shape, and a part thereof may be substantially parallel to the axial direction. Moreover, you may arrange | position the helical cutting line of the winding direction different from the helical winding direction of an axial direction edge part in an axial direction intermediate part. The embodiment shown in FIG. 10 can also obtain the same effect as the first embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Coating layer cutting device, 10 ... Hinge part, 20 ... Enveloping piece, 21 ... Inner surface, 23 ... First cutting means, 25 ... Second cutting means, 27 ... Heating means, 27A ... Coil, 27B ... Power supply, 31 ... First cutting line, 33 ... each second cutting line, 33 ... second cutting line, 41 ... operation piece, 50 ... adapter part, 51 ... insertion part, 53 ... slit, 55 ... pressing pin, 57 ... pin hole, 58 DESCRIPTION OF SYMBOLS ... Pin receiving part, 59 ... Coil spring, 61 ... Head part, 63 ... Rotating shaft, 100 ... Cable, 101 ... Core wire, 102 ... Covering layer, 103 ... Split piece, 104 ... Circumferential end part, 110 ... For remote operation Yatco, 111 ... main shaft, 112 ... gripping portion, 113 ... operation portion, 114 ... connection shaft, 115 ... fixed jaw, 116 ... movable jaw, 117 ... connection portion, 118 ... operation lever, 119 ... connection portion, 120 ... tip portion 121 ... ribs, 122 ... engagement holes

Claims (6)

A covering layer cutting device for cutting a covering layer of a cable,
A pair of surrounding pieces that are supported so as to be freely opened and closed and surround the outer surface of the cable when closed;
Two first cutting means which are spaced apart along the axial direction of each surrounding piece, and respectively form first cutting lines for cutting the covering layer over the entire circumference when the surrounding pieces are closed; ,
The first cutting means is disposed between the first cutting means, and when the surrounding pieces are closed, connects the first cutting lines and forms at least two second cutting lines that are at least partially spiral. And a two-cutting means. 2. The coating layer cutting device according to claim 1, wherein each of the divided pieces formed by each of the first cutting lines and the second cutting lines has a circumferential length that exceeds a half circumference of the core wire. .   The coating layer cutting device according to claim 1 or 2, wherein an end portion of the second cutting line is spiral.   4. The coating layer cutting device according to claim 1, wherein at least one of the first cutting unit and the second cutting unit is a unit that heats and melts the coating layer. 5. .   4. The coating layer cutting apparatus according to claim 1, wherein at least one of the first cutting unit and the second cutting unit is a cutting blade. 5. Rotatably connected to the hinge portion comprises a pair of operating pieces to be respectively opened and closed with each enclosing pieces,
The covering layer cutting device according to any one of claims 1 to 5, wherein each of the operation pieces includes an adapter portion that is detachably fixed to a distal end of a gripping portion of a remote control yatco.

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