JP6732282B2 - Coated wire stripping device and coated wire stripping method - Google Patents

Description

The present invention relates to a coated wire stripping device and a coated wire stripping method. The covered wire is, for example, a cross-linked polyethylene insulated electric wire for high-voltage pulling (PDC: Plane transformer Drop cross-linked polyethylene, hereinafter, may be referred to as a PD wire).

There is known a covered wire peeling device that removes a covering layer of a PD wire or the like during construction using the PD wire or the like.

For example, Patent Document 1 (JP-A-2014-60849) describes a cable coating stripping tool. Patent Document 1 aims to provide a cable coating stripping tool capable of regulating the cutting width of the coating layer and preventing clogging of the coating layer with chips. The cable coating stripping tool described in Patent Document 1 includes a hollow main body portion and a cutter. The hollow main body includes an insertion port for inserting a cable and a discharge port for discharging the scraps of the coating layer that have been stripped off. Further, the cutter has a cutting edge portion having a blade surface on the insertion port side and a scooping blade portion having a blade surface on the discharge port side. The cutting blade portion is a blade portion for cutting the coating layer, and the scooping blade portion is a blade portion for separating the scraped off chips from the conductive wire and lifting them. Note that Patent Document 1 does not describe a mechanism for holding chips so that the chips do not fall.

Patent Document 2 (Japanese Patent Laid-Open No. 2002-199534) describes a terminal stripper for a covered wire. The terminal stripping device described in Patent Document 2 includes a stripping device main body having a cutting blade fixed to a coating discharge port, and a guide cylinder attached to the stripping device main body. The guide tube has a covered wire guide hole into which the covered wire is inserted. In stripping the coating layer from the coated wire, first, a guide tube is selected according to the diameter of the coated wire, and the selected guide tube is attached to the peeler body. Then, the covered wire is inserted into the covered wire guide hole of the guide tube. By pressing the inserted covered wire while rotating it, the covering layer of the covered wire is spirally cut by the cutting blade. The cut cutting waste is discharged from the coating discharge port.

Patent Document 3 (JP 2001-268740 A) describes a rechargeable cable sheath stripping machine. Patent Document 3 describes a problem that the outer coating fragment stripped off by the coating stripping machine is entangled around the machine body, which significantly reduces the operability of the coating stripping machine.

Patent Document 4 (Japanese Unexamined Patent Publication No. 2016-36218) describes a coating waste collecting tool. The coating scrap collecting tool described in Patent Document 4 is a collecting tool that is attached to a peeling device and collects the spiral coating scraps peeled off by the peeling device. In the coated waste recovering device described in Patent Document 4, in order to remove the recovered coated waste from the body of the recovery tool, the joint provided on the body on the lid side and the body on the bottom side are removed. It is necessary to separate the provided joints from each other. Further, in order to use the coated waste collecting tool again, it is necessary to reconnect the separated joints.

Patent Document 5 (JP 2012-16257 A) describes an electric wire coating peeling tool. Patent Document 5 aims to provide an electric wire coating peeling tool provided with a holding mechanism for peeling scraps so as not to drop the peeling layer peeled off from an insulating coated electric wire. The electric wire coating peeling tool described in Patent Document 5 is formed to cover a cutting blade for spirally peeling the insulating coating of an electric wire, an opening for discharging the peeling layer, and a part of the opening. And a gripping member having a slit through which the release layer passes. The gripping member is made of an elastic material, and the peeling layer after peeling is held by the elastic force of the slit portion.

JP, 2014-60849, A JP-A-2002-199534 JP 2001-268740 A JP, 2016-36218, A JP 2012-16257 A

When using the coated wire peeling device, a problem may occur in that the peeled coating layer falls and scatters. Therefore, Patent Documents 4 and 5 disclose a mechanism for preventing the peeled coating layer from falling. However, the mechanism described in Patent Document 4 has a problem that the work load for removing the coating layer from the body of the recovery tool is heavy. Further, there is a problem that the mechanism described in Patent Document 5 is complicated and it is difficult to adjust the elastic force in the slit portion.

Therefore, an object of the present invention is to provide a covered wire stripping device and a covered wire stripping method capable of preventing or suppressing the fall of the stripped coating layer with a simpler mechanism.

The present invention relates to a coated wire stripping device and a coated wire stripping method shown below.

(1) A body portion into which the covered wire is inserted,
A blade body that is attached to the body portion and separates the coated wire into a coating layer and a wire rod,
The body is
A first insertion hole for receiving the covered wire;
A wire rod insertion hole for receiving the wire rod separated by the blade,
A constricted portion for holding the coating layer separated by the blade body,
The outer peripheral surface of the body portion is provided with an annular recess that receives the coating layer separated by the blade body,
The outer peripheral surface of the constricted portion is the bottom surface of the annular recess.
(2) The body is
A first portion to which the blade body is attached and which has the first insertion hole;
A second portion that constitutes the constricted portion, the second portion having a second insertion hole that receives the wire;
A third portion having a third insertion hole for receiving the wire protruding from the second insertion hole,
Each of the second insertion hole and the third insertion hole constitutes a part of the wire rod insertion hole,
The annular recess is defined by the constricted portion side end surface of the first portion, the outer peripheral surface of the constricted portion, and the constricted portion side end surface of the third portion. vessel.
(3) When defining a direction from the first portion to the second portion as a first direction, the body portion includes the coating layer separated by the blade body in the first direction and the second portion. The coated wire stripping machine according to (2) above, which has a guide inclined surface that guides in a radially outward direction.
(4) The surface formed by the upper surface of the blade body and the guide inclined surface is connected so as to be continuous in the first direction in a side view, and the covered wire stripper according to (3) above. ..
(5) The body portion includes a grip member for rotating the blade body relative to the covered wire,
The gripping member is removable with respect to the third portion. The coated wire peeling device according to any one of (2) to (4) above.
(6) An exposure length adjusting member for adjusting the exposure length of the wire is further provided,
The said exposed length adjustment member has a stopper part which can contact|abut to the edge part of the said wire, The covered wire stripping machine of said (5).
(7) The grip member rotatably supports the exposed length adjusting member around an adjusting member central axis,
The exposed length adjustment member has a fifth insertion hole capable of receiving the wire rod at a position eccentric from the adjustment member central axis,
The coated wire stripping machine according to (6), wherein the adjusting member central axis is eccentric from the central axis of the wire rod insertion hole.
(8) A coated wire stripping method using a coated wire stripping machine,
The coated wire peeling device,
A first insertion hole for receiving the covered wire,
A blade that separates the coated wire into a coating layer and a wire rod,
A wire rod insertion hole for receiving the wire rod separated by the blade,
A constricted portion for holding the coating layer separated by the blade body,
The coated wire stripping method,
Inserting the covered wire into the first insertion hole,
By rotating the blade relative to the coated wire, separating the coated wire into the coating layer and the wire rod,
Receiving the wire rod in the wire rod insertion hole and entwining the cover layer with the constricted portion.

According to the present invention, it is possible to provide a covered wire stripping device and a covered wire stripping method capable of preventing or suppressing the fall of the stripped coating layer with a simpler mechanism.

FIG. 1 is a schematic perspective view showing an example of a coated wire stripping machine in the embodiment. FIG. 2 is a schematic vertical cross-sectional view showing an example of the coated wire stripping machine in the embodiment. FIG. 3 is a schematic side view showing an example of the coated wire stripping machine in the embodiment. FIG. 4 is a schematic side view showing an example of the main body of the coated wire peeling device. FIG. 5 is a two-sided view schematically showing an example of the grip member of the coated wire stripping machine. FIG. 6 is a two-sided view schematically showing an example of the exposed length adjusting member of the coated wire peeling device. FIG. 7 is a two-sided view schematically showing an example of the exposed length adjusting member of the coated wire peeling device. FIG. 8: is a schematic side view which shows an example of the main-body part of a coated wire peeling device. FIG. 9 is a drawing-substituting photograph showing an example of the produced coated wire peeling device. FIG. 10: is a flowchart which shows an example of the covering wire stripping method in embodiment. FIG. 11 is a drawing-substituting photograph, showing an example of a state in which the separated coating layer 2 is entwined with the constricted portion 6 after the peeling work.

Hereinafter, the covered wire stripping device and the covered wire stripping method according to the embodiment will be described with reference to the drawings. In this specification, members having the same type of function are designated by the same or similar reference numerals. Further, repeated description may be omitted for members having the same or similar reference numerals.

(Outline of coated wire stripping machine)
The outline of the covered wire stripping device 4 will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic perspective view showing an example of the coated wire stripping device 4 in the embodiment. Moreover, FIG. 2 is a schematic vertical cross-sectional view showing an example of the coated wire stripping device 4 in the embodiment.

The coated wire peeling device 4 is an instrument for separating the coating layer 2 at the end of the coated wire 1 from a wire (for example, a conductive wire) and exposing the end of the wire. The covered wire 1 is, for example, a PD wire, and when the covered wire 1 is a PD wire, the covering layer 2 is a polyethylene layer and the wire material is an electric wire.

The coated wire peeling device 4 includes a body portion 5 and a blade body 9. In the example illustrated in FIG. 1, the covered wire 1 is inserted into the first insertion hole 100 provided in the body portion 5 from one end of the covered wire stripper 4. By pressing the covered wire 1 in the first direction and rotating the body portion 5 relative to the covered wire 1, the covering layer 2 of the covered wire 1 is cut by the blade 9. As a result, as shown in FIG. 2, the end of the covered wire 1 is separated into the covering layer 2 and the wire 3.

The coating layer 2 separated by the blade body 9 is guided toward the annular recess 61 provided on the outer peripheral surface of the body portion 5 and entangles with the constricted portion 6 of the body portion 5. When the coating layer 2 is entangled with the constricted portion 6, the coating layer 2 is prevented or suppressed from falling from the coated wire peeling device 4. Further, since the coating layer 2 is received in the annular recess 61, the coating layer 2 entwined with the constricted portion 6 does not interfere with the operation of the coated wire peeling device 4.

The coated wire peeling device according to the embodiment is epoch-making in that it intentionally utilizes the entanglement phenomenon of the coating layer, which has been a problem in Patent Document 3, and overturns the technical common sense of those skilled in the art. The coated wire peeling device in the embodiment effectively prevents or suppresses the fall of the coating layer by a simple mechanism called a constricted portion. Further, there are two effects, that is, the effect of holding the coating layer by the constricted portion and the annular recess of the coated wire peeling device in the embodiment and the effect that the coating layer entwined with the coated wire peeling device does not hinder the operation. , Played synergistically.

(A more detailed description of the coated wire peeler)
The covered wire stripping device 4 will be described in more detail with reference to FIG. FIG. 3 is a schematic side view showing an example of the coated wire stripping device 4 in the embodiment. The coated wire stripping device 4 includes at least a body portion 5 into which the coated wire 1 is inserted, and a blade body 9 attached to the body portion 5 and separating the coated wire 1 into a coating layer 2 and a wire rod 3.

The body portion 5 has a first insertion hole 100 for receiving the covered wire 1, a wire rod insertion hole 102 for receiving the wire rod separated by the blade body 9, and a constricted portion 6 for holding the coating layer separated by the blade body 9. Prepare An annular recess 61 for receiving the coating layer separated by the blade 9 is provided on the outer peripheral surface of the body portion 5. The constricted portion 6 constitutes the bottom surface of the annular recess 61. More specifically, the outer peripheral surface 64 of the constricted portion 6 is the bottom surface of the annular recess 61.

The body portion 5 may include a first portion 50, a second portion 60, and a third portion 70. The blade body 9 is attached to the first portion 50, and the first portion 50 is provided with a first insertion hole 100 into which the covered wire 1 is inserted.

The second portion 60 is a portion arranged on the first direction side of the first portion 50. More specifically, the second portion 60 is a portion arranged between the first portion 50 and the third portion 70. The second portion 60 constitutes the constricted portion 6 that holds the coating layer 2. The outer diameter of the constricted portion 6 is smaller than the outer diameter of the first portion 50 and smaller than the outer diameter of the third portion 70. Further, the second portion 60 is provided with a wire rod insertion hole 102 into which the wire rod separated by the blade 9 is inserted. In addition, in this specification, the wire rod insertion hole 102 in the second portion 60 is referred to as a second insertion hole 102a. The wire rod insertion hole 102 (second insertion hole 102a) communicates with the first insertion hole 100. In the example shown in FIG. 3, the central axis C of the wire rod insertion hole 102 and the central axis of the first insertion hole 100 coincide. As shown in FIG. 3, the hole diameter of the wire rod insertion hole 102 (second insertion hole 102a) may be smaller than the hole diameter of the first insertion hole 100.

The third portion 70 is a portion arranged on the first direction side of the second portion 60. The third portion 70 is provided with a third insertion hole 102c that receives a wire rod that protrudes from the second insertion hole 102a in the first direction. The third insertion hole 102c communicates with the second insertion hole 102a and constitutes a part of the wire rod insertion hole 102. In the example shown in FIG. 3, the central axis of the third insertion hole 102c and the central axis of the second insertion hole 102a are coincident with each other. As shown in FIG. 3, the hole diameter of the third insertion hole 102c may be smaller than the hole diameter of the second insertion hole 102a, or may be equal to the hole diameter of the second insertion hole 102a.

In the example illustrated in FIG. 3, the annular recess 61 that receives the coating layer 2 separated by the blade body 9 has the constricted portion end surface 55 of the first portion 50, the outer peripheral surface 64 of the constricted portion 6, and the third portion 70. Is defined by the constricted portion side end surface 73 of the.

In the example illustrated in FIG. 3, the annular recess is defined by the constricted portion side end surface of the first portion, the outer peripheral surface of the constricted portion, and the constricted portion side end surface of the third portion, and therefore is separated by the blade body. The coating layer effectively prevented from unintentionally coming off the annular recess.

In the example illustrated in FIG. 3, the outer diameter of the first portion 50 and the outer diameter of the third portion 70 are the same, but both outer diameters may be different from each other. In the example shown in FIG. 3, the annular recess 61 is defined by the bottom surface (outer peripheral surface 64) and the two side surfaces (55, 73), and the top surface of the annular recess 61 is open. There is. Alternatively, at least a portion of the top surface (opening portion) of the annular recess 61 may be covered with any member supported by the first portion 50 or the third portion 70. In other words, the first portion 50 or the third portion 70 may be provided with a cover member that prevents the coating layer 2 separated by the blade body 9 from coming out of the annular recess 61 in the radially outward direction. ..

Next, with reference to FIGS. 4 to 6, each member constituting the covered wire stripping device 4 will be described. FIG. 4 is a schematic side view showing an example of the main body portion 40 of the coated wire peeling device. FIG. 5 is a two-sided view schematically showing an example of the grip member 80 of the coated wire peeling device. On the left side of FIG. 5, a schematic side view of the grip member 80 is described, and on the right side of FIG. 5, a schematic rear view, which is a view of the grip member 80 viewed in the second direction, is described. FIG. 6 is a two-sided view schematically showing an example of the exposed length adjusting member 200 of the coated wire peeling device. A schematic side view of the exposure length adjusting member 200 is shown on the left side of FIG. 6, and a schematic rear view of the exposure length adjusting member 200 seen along the second direction is shown on the right side of FIG. Have been described.

(Main body 40)
The main body portion 40 includes the above-described first portion 50, the above-described second portion 60, and at least a portion of the above-mentioned third portion 70. The material of the body portion 40 is, for example, metal. The blade 9 is attached to the first portion 50 of the main body. The blade body 9 is attached to the first portion 50 (more specifically, the inclined surface provided on the first portion 50) by the blade body attachment mechanism. In the example illustrated in FIG. 4, the blade attachment mechanism includes a screw hole 56 provided in the first portion 50 and a screw member 57.

The first portion 50 has a substantially cylindrical shape. The first portion 50 includes an end surface 53 on the second direction side and an outer peripheral surface 54 in addition to the constricted portion side end surface 55 described above. The second direction is the direction opposite to the first direction. In the example illustrated in FIG. 4, the first portion 50 includes an annular chamfered portion 53 a between the end surface 53 and the outer peripheral surface 54, and an annular chamfered portion between the constricted portion side end surface 55 and the outer peripheral surface 54. The portion 55a is provided.

The 1st insertion hole 100 provided in the 1st part 50 is provided with the diameter expansion hole part 100a whose hole diameter expands toward a 2nd direction. The expanded diameter hole portion 100a functions as a guide when inserting the covered wire 1 into the first insertion hole 102.

The second portion 60 is provided with a guide inclined surface 64a that guides the coating layer separated by the blade body 9 in the first direction and in the radial outward direction of the second portion 60. The guide inclined surface 64a functions as a guide that guides the separated coating layer toward the annular recess 61. In the example shown in FIG. 4, since the guide inclined surface 64a is provided, the separated coating layer is smoothly moved to the annular recess 61. The guide inclined surface 64a is an inclined surface whose distance from the central axis of the second insertion hole 102a increases as it goes in the first direction. In the example illustrated in FIG. 4, the guide inclined surface 64a is a flat surface, but the guide inclined surface 64a may include a curved surface (for example, a curved surface having a large radius of curvature). Further, in the example shown in FIG. 4, the guide inclined surface 64a is provided so that the normal line direction of the guide inclined surface 64a and the central axis of the second insertion hole 102a intersect. However, the direction of the normal line of the guide inclined surface 64a in the embodiment is not limited to the direction of the normal line of the guide inclined surface 64a shown in FIG.

In the example shown in FIG. 4, the surface formed by the upper surface 9a of the blade and the guide inclined surface 64a has a V shape in a side view. The side view means that the second insertion hole 102a is viewed from a direction perpendicular to the central axis of the second insertion hole 102a. In the example shown in FIG. 4, when viewed from a direction perpendicular to the central axis of the second insertion hole 102a and a direction parallel to the upper surface 9a of the blade body, the upper surface 9a of the blade body and the guide inclined surface 64a are formed. The surface has a V shape. When the surface formed by the upper surface 9a of the blade body and the guide inclined surface 64a has a V-shape, the coating layer separated by the blade body 9 is immediately guided by the guide inclined surface 64a. Therefore, the movement of the separated coating layer to the annular recess 61 is performed more smoothly. The blade body is not limited to a flat surface and may be curved. Also, the guide inclined surface 64a may be curved instead of being linear. Therefore, the surface formed by the upper surface 9a of the blade and the guide inclined surface 64a is not limited to the V shape in side view, and may be a substantially U shape or the like. In other words, it is sufficient that the upper surface 9a of the blade body and the guide inclined surface 64a are connected so as to be continuous in the first direction in a side view.

The 2nd insertion hole 102a provided in the 2nd part 60 may be equipped with the diameter expansion hole part 102b whose hole diameter expands as it goes to a 2nd direction. When the second insertion hole includes the enlarged diameter hole portion 102b, the wire rod that passes through the second insertion hole 102a and moves in the first direction is smoothly guided to the third insertion hole 102c of the third portion 70. In addition, when the hole diameter of the 2nd insertion hole 102a and the hole diameter of the 3rd insertion hole 102c are mutually equal, the diameter expansion hole part 102b is abbreviate|omitted.

In the example illustrated in FIG. 4, the second portion 60 has a substantially cylindrical shape. More specifically, the outer peripheral surface 64 of the second portion 60 includes a portion that conforms to the shape of the outer surface of the cylinder and a guide inclined surface 64a.

In the example illustrated in FIG. 4, the third portion 70 includes a first fitting portion 77 that fits with the grip member 80 illustrated in FIG. 5. In the example shown in FIG. 4, the first fitting portion 77 is a fitting concave portion, but the first fitting portion 77 may be a fitting convex portion. The third portion 70 also includes a first fixing portion 76 for immovably fixing the grip member 80 to the third portion 70. In the example shown in FIG. 4, the first fixing portion 76 is a through hole into which a fixing screw is inserted.

The third portion 70 has a substantially cylindrical shape. The third portion 70 includes an outer peripheral surface 74 in addition to the constricted portion side end surface 73 described above. In the example illustrated in FIG. 4, the third portion 70 includes an annular chamfered portion 73 a between the constricted portion side end surface 73 and the outer peripheral surface 74. In the example shown in FIG. 4, since the annular chamfered portion 73a (and the annular chamfered portion 55a) is provided, the covering layer entwined with the constricted portion 6 can be easily removed from the annular concave portion 61 after the peeling work is completed. It can be removed.

(Grip member 80)
Next, the grip member 80 will be described with reference to FIG. The grip member 80 is used to rotate the blade body 9 relative to the covered wire. The grip member 80 includes a portion gripped by an operator. In the example shown in FIG. 5, the outer peripheral surface of the end portion of the grip member on the first direction side is the grip region 85 gripped by the operator. The grip area 85 may be subjected to anti-slip processing such as uneven processing. The material of the grip member 80 is, for example, synthetic resin.

The grip member 80 is attachable to and detachable from the body portion 40 (more specifically, the third portion 70). The grip member 80 includes a second fitting portion 87 that fits with the first fitting portion 77 of the third portion 70. In the example shown in FIG. 5, the second fitting portion 87 is a fitting convex portion, but the second fitting portion 87 may be a fitting concave portion. Further, the grip member 80 includes a second fixing portion 86 for immovably fixing the grip member 80 to the third portion 70. In the example shown in FIG. 5, the second fixing portion 86 is a screw hole into which a fixing screw is inserted.

In the example illustrated in FIGS. 4 and 5, the main body 40 and the grip member 80 are separate bodies. Therefore, the main body 40 and the grip member 80 can be flexibly combined. For example, it is possible to prepare a plurality of main body portions 40 for one grip member 80 and attach the optimum main body portion 40 to the grip member 80 depending on the situation.

Alternatively, the main body 40 and the grip member 80 may be integrally molded. In this case, the configurations of the first fitting portion 77, the second fitting portion 87, the first fixing portion 76, and the second fixing portion 86 can be omitted. In this case, the entire structure of the coated wire stripping device 4 is simplified and the number of parts is reduced. The coated wire stripping device 4 may be configured only by the main body 40 without providing the grip member 80. In that case, in order to facilitate the relative rotation of the blade body 9 with respect to the covered wire, the outer peripheral surface 74 of the third portion 70 may be subjected to anti-slip processing such as uneven processing.

The grip member 80 may be provided with a fourth insertion hole 102d that receives a wire rod that protrudes in the first direction from the third insertion hole 102c of the third portion 70 illustrated in FIG. The fourth insertion hole 102d constitutes a part of the wire rod insertion hole 102. When the fourth insertion hole 102d is provided, the central axis of the fourth insertion hole 102d preferably coincides with the central axis of the third insertion hole 102c.

In the example illustrated in FIG. 5, the grip member 80 (body portion 5) includes an adjusting member receiving hole 88 that can receive an exposure length adjusting member 200 described below. The adjustment member receiving hole 88 communicates with the wire rod insertion hole 102 (in the example shown in FIG. 5, the adjustment member receiving hole 88 communicates with the fourth insertion hole 102d). The central axis C1 of the adjusting member receiving hole 88 is eccentric from the central axis C of the wire rod insertion hole 102.

(Exposed length adjusting member 200)
Next, the exposure length adjusting member 200 will be described with reference to FIG. 6. The exposed length adjusting member 200 is a member that adjusts the exposed length of the wire rod, in other words, the length of the wire rod portion of the covered wire 1 exposed by stripping off the coating layer 2. The exposed length adjusting member 200 has a stopper portion 209 that can come into contact with the end portion of the wire. When the stopper portion 209 is at the advanced position intersecting the central axis C of the wire rod insertion hole 102, the wire rod inserted in the wire rod insertion hole 102 abuts on the stopper portion 209. As a result, the exposed length of the wire is limited to the distance between the stopper portion 209 and the blade body 9. On the other hand, when the stopper portion 209 is in the retracted position where it does not intersect the central axis C of the wire rod insertion hole 102, the wire rod inserted into the wire rod insertion hole 102 does not contact the stopper portion 209. In this case, the exposed length of the wire will be longer.

In the example shown in FIG. 6, the stopper portion 209 is the end surface of the exposure length adjusting member 200 on the second direction side. Alternatively, the stopper portion 209 (and the exposed length adjusting member 200) may be a plate-shaped member that is movable in a direction perpendicular to the central axis C of the wire rod insertion hole 102.

In the example shown in FIG. 6, the exposed length adjusting member 200 is a member inserted into the adjusting member receiving hole 88 shown in FIG. The shape of the outer peripheral surface 208 of the exposed length adjusting member 200 is a shape complementary to the shape of the inner peripheral surface of the adjusting member receiving hole 88. Further, the exposure length adjusting member 200 includes an operation unit 205 operated by an operator and a fifth insertion hole 202 capable of receiving a wire rod. The operation unit 205 is provided at the end of the exposure length adjusting member 200 on the first direction side. The central axis C2 of the fifth insertion hole 202 is eccentric from the central axis of the exposed length adjusting member 200 (hereinafter referred to as “adjusting member central axis C3”).

The exposed length adjusting member 200 shown in FIG. 6 is rotatably supported around the adjusting member central axis C3 by the body portion 5 shown in FIG. 3 (more specifically, the grip member 80 shown in FIG. 5). To be done. The exposure length adjustment member 200 can be operated by rotating the operation unit 205 around the adjustment member central axis C3. By rotating the operation portion 205 around the adjustment member central axis C3, the stopper portion 209 is moved to the advanced position intersecting the central axis C of the wire rod insertion hole 102 and the retracted position not intersecting the central axis C of the wire rod insertion hole 102. To move between.

When the stopper portion 209 is in the advanced position, the exposed length of the wire is limited to the distance between the stopper portion 209 and the blade body 9. On the other hand, when the stopper portion 209 is in the retracted position, the wire rod can be received by the fifth insertion hole 202. In this case, the exposed length of the wire material corresponds to the distance between the bottom portion 203 of the fifth insertion hole 202 and the blade body 9.

Note that at least one of the exposed length adjusting member 200 and the body portion 5 (more specifically, the grip member 80) has at least one of the exposed length adjusting member 200 and the body portion 5 during the stripping operation of the covered wire. However, it is preferable to provide an arbitrary regulating member that regulates so as not to move relative to each other in the direction along the adjusting member central axis C3. Further, it is preferable that the operation unit 205 is provided with an index indicating whether the stopper unit 209 is in the advanced position or the retracted position. In the example shown in FIG. 6, an index of “50 mm” is provided corresponding to setting the exposed length of the wire rod to 50 mm, and “100 mm” corresponding to setting the exposed length of the wire rod to 100 mm. The index is provided.

When the exposure length adjusting member 200 includes the fifth insertion hole 202 capable of receiving the wire rod and the stopper portion 209, the exposure length of the wire rod can be adjusted by a simple operation (operation of rotating the exposure length adjusting member). It becomes possible to adjust.

In the example illustrated in FIG. 6, only one fifth insertion hole 202 is provided around the adjustment member central axis C3. Alternatively, as shown in FIG. 7, the exposure length adjusting member 200 may include a plurality of fifth insertion holes 202a and 202b around the adjusting member central axis C3. In the example illustrated in FIG. 7, the center axis C2 of the fifth insertion hole 202a is eccentric from the adjustment member center axis C3, and the center axis C4 of the fifth insertion hole 202b is eccentric from the adjustment member center axis C3. There is. In the example illustrated in FIG. 7, the depth D1 of the fifth insertion hole 202a and the depth D2 of the fifth insertion hole 202b are different from each other. In this case, the exposed length of the wire can be adjusted in three steps. That is, when the central axis C of the wire rod insertion hole 102 and the stopper portion 209 intersect, the exposed length of the wire rod is the shortest (corresponding to the index “S” in FIG. 7) and the central axis C of the wire rod insertion hole 102. When the central axis of the fifth insertion hole 202b coincides, the exposed length of the wire rod is the second shortest (corresponding to the index “M” in FIG. 7), and the central axis C of the wire rod insertion hole 102 and the fifth insertion hole 202a. The exposed length of the wire is the longest when it corresponds to the central axis of (corresponding to the index “L” in FIG. 7). The number of the fifth insertion holes 202 may be three or more. In the invention described in Patent Document 2, in order to change the length of the exposed wire rod portion, it is necessary to rotate the adjustment knob of the stopper and move the narrow portion of the length adjustment window back and forth. Therefore, there are problems that the operation is complicated and that the exposed wire is caught in the length adjustment window. On the other hand, the exposure length adjusting member 200 shown in FIGS. 6 and 7 can change the length of the wire rod insertion hole through which the exposed wire rod portion is guided only by rotating in the grip portion 80. Therefore, the length of the exposed wire rod can be changed by a simple operation, and the exposed wire rod is guided into the wire rod insertion hole. It does not get caught on the members.

(Size of constriction and annular recess)
Next, the sizes of the constricted portion 6 and the annular recess 61 will be described with reference to FIG. 8. The diameter D3 of the constricted portion 6 is preferably sufficiently short so that the coating layer separated by the blade body 9 can be entangled with the constricted portion 6. Further, the diameter D3 of the constricted portion 6 is preferably sufficiently long so that the wire rod insertion hole can be formed therein. The diameter D3 of the constricted portion 6 is, for example, 4 mm or more and 30 mm or less.

The width W1 of the annular concave portion 61, that is, the length of the constricted portion 6 (the distance between the constricted portion side end surface 55 and the constricted portion side end surface 73) is such that the coating layer separated by the blade body 9 is entangled with the constricted portion 6. There is no particular limitation as long as the length is possible. The depth D4 of the annular recess 61 is not particularly limited as long as it is deep enough to receive the coating layer separated by the blade 9. In the example illustrated in FIG. 8, the depth D4 of the annular recess 61 is defined as the distance between the bottom surface of the annular recess 61 (excluding the guide inclined surface 64a) and the outer peripheral surface 54 of the first portion 50. It

(Coating wire stripping method)
A method for stripping the coated wire using the stripped wire stripper 4 will be described with reference to FIGS. 9 to 11. FIG. 9 is a photograph showing an example of the produced coated wire peeling device 4. FIG. 10: is a flowchart which shows an example of the covering wire stripping method in embodiment. FIG. 11 is a photograph when the coating layer is stripped off by the coated wire stripping device 4.

In the coated wire peeling device 4 shown in FIG. 9, a part of the blade tip 9b of the blade body 9 reaches a part of the first insertion hole 100 to form an opening. Therefore, the coating layer separated by the blade body 9 can be discharged from the opening and entangled with the constricted portion 6. Further, the angle formed by the upper surface 9a of the blade body 9 of the coated wire stripping device 4 shown in FIG. 9 and the guide inclined surface 64a is about 90 degrees. The angle formed by the upper surface 9a of the blade 9 and the guide inclined surface 64a may be appropriately set in consideration of the width of the coating layer to be separated, and may be set to, for example, 30 degrees or more and 150 degrees or less. ..

In the covered wire stripping method, first, in the first step S1, the exposure length of the wire rod is set by the exposure length adjusting member 200. In the example shown in FIG. 9, the exposed length of the wire rod is selected by rotating the operation unit 205. In addition, when the covered wire stripping device 4 does not include the exposure length adjusting member 200, the first step S1 is omitted.

In the second step S2, the covered wire 1 is inserted into the first insertion hole 100. As a result of the insertion, the covered wire 1 comes into contact with the blade tip 9b of the blade body 9.

In the third step S3, the blade body 9 is rotated relative to the covered wire 1. It is preferable that the relative rotation be performed simultaneously with the pushing operation of the covered wire 1 in the first direction. By rotating the blade body 9 relative to the coated wire 1, the coated wire 1 is separated into the coating layer 2 and the wire rod 3. In addition, when the relative rotation and the pushing operation are performed at the same time, the coating layer 2 is cut into a spiral shape.

In the fourth step S4, the blade body 9 is further rotated relative to the covered wire 1. It is preferable that the relative rotation be performed simultaneously with the pushing operation of the covered wire 1 in the first direction. By the relative rotation operation and the pushing operation, the wire rod 3 advances in the first direction and is received in the wire rod insertion hole 102. Further, the relative rotation operation and the pushing operation guide the coating layer 2 toward the annular recess 61, in other words, toward the outer peripheral surface of the constricted portion 6. Since the coating layer 2 has elasticity, it tends to return to its original shape. The covering layer 2 is entangled with the constricted portion 6 by the force of returning to the original state. In other words, the covering layer 2 is wound by the constricted portion 6.

In the fifth step S5, the blade body 9 is further rotated relative to the covered wire 1 while the movement of the covered wire 1 in the first direction is stopped. The stopping of the movement of the covered wire 1 in the first direction may be caused by the contact of the wire 3 with the stopper portion 209. When the blade body 9 is relatively rotated with respect to the coated wire 1 in a state where the movement of the coated wire 1 in the first direction is stopped, the coating layer 2 of the coated wire 1 is cut into an annular shape. As a result, the coating layer 2 on the second direction side of the blade body 9 and the coating layer 2 on the first direction side of the blade body 9 are completely separated. Since the coating layer 2 on the first direction side of the blade body 9 is entwined with the constricted portion, it does not fall apart from the coated wire peeling device 4. Further, the coating layer 2 (in other words, the coated wire 1) located on the second direction side of the blade body 9 is held by the operator and therefore does not drop. FIG. 11 is a photograph showing an example of a state in which the separated coating layer 2 is entwined with the constricted portion 6 after the peeling work. The coating layer 2 may be entwined with the constricted portion 6 in a spiral state, may be entangled with the constricted portion 6 in a double spiral state, and may be entangled with the constricted portion 6 in other shapes. Depending on the material of the coating layer 2, the angle of the guide inclined surface 64a, the relative rotation speed, the pushing speed of the coating wire 1, and the like, the shape in which the coating layer 2 is entwined with the constricted portion 6 is different, but the coating layer 2 is entangled and held in the constricted portion.

In addition, in the above-described embodiment, the relative rotation between the blade body 9 and the covered wire 1 is manually performed. For example, the relative rotation may be performed by applying a rotational force to the grip area 85 while holding the covered wire 1 with the left hand. Alternatively, the relative rotation may be performed automatically using an electric motor or the like.

Use of the coated wire peeling device of the present invention effectively suppresses the fall of the coating layer separated from the coated wire. As a result, it is not necessary to collect the fallen coating layer. Therefore, it is useful for a trader who handles covered wires, for example, an electric wire connection work contractor.

DESCRIPTION OF SYMBOLS 1... Coated wire, 2... Coating layer, 3... Wire material, 4... Coated wire stripping device, 5... Body part, 6... Constriction part, 9... Blade body, 9a... Upper surface of blade body, 9b... Blade edge, 40... Main body Part 50... First part, 53... First part end face, 53a... Chamfer part, 54... First part outer peripheral surface, 55... Constricted part end face of first part, 55a... Chamfer part, 56... Screw hole , 57... Screw member, 60... Second part, 61... Annular recess, 64... Constricted part outer peripheral surface, 64a... Guide inclined surface, 70... Third part, 73... Constricted part end surface of third part, 73a... Chamfered portion, 74... outer peripheral surface of third portion, 76... first fixing portion, 77... first fitting portion, 80... grip member, 85... grip region, 86... second fixing portion, 87... second fitting Part, 88... Adjusting member receiving hole, 100... First insertion hole, 100a... Expanded hole part, 102... Wire rod insertion hole, 102a... Second insertion hole, 102b... Expanded hole part, 102c... Third insertion hole, 102d... Fourth insertion hole, 200... Exposed length adjusting member, 202... Fifth insertion hole, 202a... Fifth insertion hole, 202b... Fifth insertion hole, 203... Fifth insertion hole bottom part, 205... Operation part, 208... Outer peripheral surface of exposed length adjusting member, 209... Stopper portion

Claims (8)

A body part into which the covered wire is inserted,
A blade body that is attached to the body portion and separates the coated wire into a coating layer and a wire rod,
The body is
A first insertion hole for receiving the covered wire;
A wire rod insertion hole for receiving the wire rod separated by the blade,
A constricted portion for holding the coating layer separated by the blade body,
The outer peripheral surface of the body portion is provided with an annular recess that receives the coating layer separated by the blade body,
The outer peripheral surface of the constricted portion is the bottom surface of the annular recess. The body is
A first portion to which the blade body is attached and which has the first insertion hole;
A second portion that constitutes the constricted portion, the second portion having a second insertion hole that receives the wire;
A third portion having a third insertion hole for receiving the wire protruding from the second insertion hole,
Each of the second insertion hole and the third insertion hole constitutes a part of the wire rod insertion hole,
The coated annular peeling device according to claim 1, wherein the annular recess is defined by a constricted portion side end surface of the first portion, the outer peripheral surface of the constricted portion, and a constricted portion side end surface of the third portion. .. When defining a direction from the first portion to the second portion as a first direction, the body portion includes the coating layer separated by the blade body in the first direction and the outer diameter of the second portion. The coated wire stripping machine according to claim 2, wherein the coated wire stripping machine has a guide inclined surface that guides in a direction. The covered wire stripping machine according to claim 3, wherein a surface formed by the upper surface of the blade body and the guide inclined surface is connected so as to be continuous in the first direction in a side view. The body portion includes a grip member for rotating the blade body relative to the covered wire,
The coated wire peeling device according to claim 2, wherein the grip member is detachable from the third portion. Further comprising an exposed length adjusting member for adjusting the exposed length of the wire rod,
The coated wire stripping machine according to claim 5, wherein the exposed length adjusting member has a stopper portion that can come into contact with an end portion of the wire rod. The grip member rotatably supports the exposed length adjusting member around an adjusting member central axis,
The exposed length adjustment member has a fifth insertion hole capable of receiving the wire rod at a position eccentric from the adjustment member central axis,
The coated wire stripping machine according to claim 6, wherein the central axis of the adjusting member is eccentric from the central axis of the wire rod insertion hole. A coated wire stripping method using a coated wire stripping device,
The coated wire peeling device,
A first insertion hole for receiving the covered wire,
A blade that separates the coated wire into a coating layer and a wire rod,
A wire rod insertion hole for receiving the wire rod separated by the blade,
A constricted portion for holding the coating layer separated by the blade body,
The coated wire stripping method,
Inserting the covered wire into the first insertion hole,
By rotating the blade relative to the coated wire, separating the coated wire into the coating layer and the wire rod,
Receiving the wire into the wire insertion hole and entwining the covering layer with the constricted portion.