JPH11285123A - Wire stripper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically perform each operation up to cutting of an insulator with a cutter, rotation of cutter and extraction of insulator from gripping of insulated wire. SOLUTION: In a wire stripper comprising grippers 21, 21 for gripping an insulator of the end of insulated wire at a predetermined position and cutters 27, 27 for holding and cutting the insulator at the position immediately after the grippers in order to strip the insulator from the core wire by pulling the insulator after cutting the insulator with cutters, a main shaft, 3 which can be supported to slide in the forward and backward directions by a frame 1 to be turned in the normal and inverse directions is provided in order to cause the grippers 21, 21 to conduct holding operation and the cutters 27, 27 to conduct the holding and cutting operations, is provided, this main shaft 3 is provided with a lead screw shaft 10 which is threaded with a nut member 11, normal rotation of main shaft 3 causes the lead screw shaft 10 to make progress the number member 11 and thereby the grippers 21, 21 and cutters 27, 27 conduct closing operation, after the main shaft 3 stops to make process, the nut member 11 is caused to move backward by the lead screw of lead screw shaft 10, pulling the cutters 27, 27 and thereby the insulator being cut can be removed from the core wire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire stripper for automatically stripping an end of a covering material of a wire (electric wire) over a predetermined length.

[0002]

2. Description of the Related Art Conventionally, various wire stoppers have been provided for stripping an end portion of a covering material of a wire over a required length to expose a core wire and providing the wire for wiring.

[0003] In this type of wire stripper, generally, after inserting an end portion of a coated wire into a machine, the end portion is gripped from both sides by a gripper, and is sandwiched between both sides of a cutting position of the coating material by a cutting tool. After cutting only the wire, the blade is pulled to peel off the coating material at the end of the wire.

The opening and closing operation of the blade and the gripper in the conventional wire stripper is performed by reciprocating the blade and the gripper opening / closing operation lever using an air cylinder (or a hydraulic cylinder), or by using an electric motor. This is done by operating the blade and the gripper opening / closing cam.

[0005]

However, in the former case using an air cylinder or a hydraulic cylinder, a compressor and a hydraulic unit are indispensable in addition to the wire stripper. Therefore, the compressor cannot be used unless these facilities are provided. In addition to being extremely restricted in the place of use, the compressor has a problem that the exhaust noise is loud and the moisture contained in the air adversely affects the mechanism.

In the case of using the latter cam, an individual motor must be used for each operation, or the rotation of the motor must be greatly reduced and transmitted to the cam. Since large parts such as rings are involved, there is a problem that the wire stripper becomes large and expensive.

[0007]

SUMMARY OF THE INVENTION The present invention provides an inexpensive and compact wire stripper capable of automatically cutting a sheath from a grip of a sheath wire into a sheath by a cutter, rotating the cutter, and extracting the sheath. It is an object of the present invention to solve the above problem by providing the present invention to be capable of forward / reverse rotation capable of performing gripping operation of the gripper and clamping / cutting operation by a cutter supported on a machine frame so as to be slidable in the front-rear direction. The main shaft is provided with a lead screw shaft portion, and a nut member is screwed onto the lead screw shaft portion, the lead screw shaft portion is advanced by forward rotation of the main shaft, and the closing operation of the gripper and the cutter is performed. After the main shaft is stopped from moving forward, the nut member is retracted by the lead screw of the lead screw shaft portion, the cutter is pulled, and the cut is completed. It is obtained as withdrawn from the core to Kutsugaezai.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows the appearance of an embodiment of a wire stripper according to the present invention, FIG. 2 shows a longitudinal sectional side view (corresponding to the AA section in FIG. 3), and FIG. 3 shows the same horizontal sectional view. In the description, the left side of FIGS. 1 to 3 which is the wire insertion side is referred to as a front part, and the right side is referred to as a rear part.

As shown in FIG. 2, a main shaft 3 is rotatably and axially slidably supported at a position below the side walls 2 at the front and rear ends of the machine frame 1 at a position immediately above the main shaft 3. Two gripping shafts 4 and 4 which are parallel to each other, and a cutter shaft 5 are provided above a center position between the shafts 4 and 4.

The required length range of the rear end of the main shaft 3 is a spline shaft 6 (may be a key). The spline shaft 6 has an induction motor (single-phase) mounted on the machine frame 1.
Alternatively, a toothed pulley 9 receiving rotation transmission from a normal forward / reverse (reversible) motor 7 (shown in FIG. 3) such as a reversible motor having a cooling means via a timing belt 8 is slidably fitted. The rotation of the motor 7 is transmitted to the main shaft 3.

An intermediate portion of the main shaft 3 is a lead screw shaft 10 on which a lead screw is engraved. A nut member 11 is fitted to the lead screw shaft 10, and the rotation of the main shaft 3 causes the nut member 11 to move in the axial direction. It can move forward and backward.

A cone-shaped first conical cam 12 having a small diameter on the front side is coaxially fixed between the spline shaft 6 of the main shaft 3 and the lead screw shaft 10. A cone-shaped second conical cam 13 having a small diameter on its side is slidably fitted, and a compression spring 14 composed of a coil spring is interposed between the large-diameter portion of the second conical cam 13 and the nut member 11. ing. The lead screw shaft 10
The nut member 11 and the nut member 11 may have a ball screw structure.

At the front end of the main shaft 3 protruding from the side wall 2 of the machine frame 1, a positioning member which advances and retreats with a screw by turning a knob 15a of a cutting amount adjusting mechanism 15 for adjusting the cutting amount of the coating material of the wire W. A thrust bearing 17 is provided at the inner end of the positioning member 16 so as to be able to abut on the front end of the second conical cam 13.

An elongated hole 19 extending in the axial direction is formed in the cylindrical portion 18 located at the tip of the second conical cam 13, and a pin 20 fixed to the main shaft 3 is fitted in the elongated hole 19. After the front end of the second conical cam 13 contacts the thrust bearing 17 at the inner end of the positioning member 16, the main shaft 3 is allowed to move forward by the length of the long hole 19.

The bases 21a of the grippers 21, 21 are fixed to the front ends of the gripping shafts 4, 4, and the upper ends of the arms 22, 22 are fixed near the rear ends of the gripping shafts 4, 4. Cam rollers 23, 23 which are suspended and rotatably mounted on the lower ends of these arms 22, 22 in a horizontal plane.
Is in contact with the peripheral surface of the first conical cam 12, and is pushed by the tapered peripheral surface when the cam 12 moves forward so that the gripping shafts 4, 4 are rotated in opposite directions. When the first conical cam 12 advances, the grippers 21 are closed (wire grip),
It is designed to be turned in the opening direction when retreating.

The front end of the cutter shaft 5 is located at the position of the side wall 2 at the front end of the machine frame 1, and the holder 24 fixed to the front end position of the cutter shaft 5 sandwiches the axis of the cutter shaft 5. At a symmetrical position, a position slightly rearward from the intermediate portion of the cutter arms 25, 25 is pivotally supported by shafts 26, 26. At the front ends of the cutter arms 25, 25, cutters 27, 27 are attached so as to face each other. Cutter arm 2
Cam rollers 28, 28 are mounted on the rear ends of the rollers 5, 25, respectively.

The upper cutter arm 25 has a lower end of a shaft 26 and an upper end of the
Is kept at a position where it does not descend excessively, and the lower cutter arm 25 is lowered by its own weight at a position where its front end (the cutter 27 portion) does not hinder the reception of the wire W. .

A third conical cam 30 is slidably fitted on the cutter shaft 5, and a compression spring 31 is interposed between the cam 30 and the holder 24.

A spline shaft 32 (which may be a key) is provided at the rear of the cutter shaft 5.
A sliding cylinder 33 is slidably fitted to 2, and a female screw part 33 a at the rear end of the sliding cylinder 33 is screwed into a lead screw part 34 fixed to the side wall 2.

On both sides of the second conical cam 13, swing members 36, 36 whose lower ends are pivotally supported on the machine frame 1 by springs in the rising direction so as to be swingable by shafts 35, 35 (FIG. 2). The cam roller 38 on the shaft 37 in the vertical direction of the swing member 36 comes into contact with the peripheral surface of the second conical cam 13.

On the other hand, a vertical shaft 40 is rotatably supported by a support member 39 substantially integral with the nut member 11, and a roller 42 at the distal end of a lever 41 having a base end fixed to the lower end of the shaft 40. Abuts against an outer surface near the upper end of the swing member 36, and a roller 44 at the distal end of a lever 43 whose base end is fixed to the upper end of the shaft 40 is connected to the third conical cam 3.
0, and the roller 42 of the lever 41 is always in contact with the swing member 36 by the urging of the compression spring 31. When the second conical cam 13 moves forward, the swing member 36
The roller 44 of the lever 43 moves the third conical cam 30 forward against the compression spring 31 when is pushed outward and swings.

A cylindrical member 46 having flanges 45, 45 at the front and rear ends is connected to the front end of the first conical cam 12, and is fixed to a shaft 47 rotatably supported on the machine frame 1 side view. The roller 49 at the tip of the lower lever 48 having a U-shape,
A roller 49 is provided between the front and rear flanges 45, 45 of the cylindrical member 46 with a required play in the axial direction, and is fixed to an upper portion of the shaft 47. 51 is fitted in a circumferential groove 52 formed in the circumferential direction of the sliding cylinder 33, and when the rollers 49, 49 of the lower lever 48 are pressed by the rear flange 45 of the cylindrical member 46, the upper lever 50 is Swing the roller 5
The sliding cylinder 33 is advanced through the first and the first 51, and by this advancement, the cutter shaft 5 is formed to be rotated through the spline shaft 32 by being screwed with the lead screw portion 34, thereby forming an interlocking mechanism. ing.

A brake device 53 is interposed between the nut member 11 and the rear side wall 2 of the machine frame 1. The brake device 53 provides resistance by the movement of the nut member 11, and is provided with a shaft 56 inserted through a horizontally long hole 55 of a base 54 fixed to the side wall 2.
The plate 57 on the side is connected, and a braking action is applied to the nut member 11 by friction caused by a spring force applied by a spring (not shown) via the shaft 56, whereby a forward action is applied to the shaft 10, and the gripper 21, 21 The force is converted to a gripping force, and the wire is strongly gripped and the cutter 27, 27
The cutting force is provided.

The timing of the movement of the first and second conical cams 12 and 13 is such that when the main shaft 3 is normally rotated, the main shaft 3 is advanced by the lead screw of the lead screw shaft 10 while the nut member 11 is fixed. Grippers 21 and 2 at 12
1 is closed, and then the cutter 2
When the main shaft 3 stops moving and the main shaft 3 stops, the nut member 11 retreats against the load of the brake device 53, so that the cutters 27 and 27 retreat and remove the covering material from the core wire. .

The cutters 27, 27 are shown in FIG.
(B), as shown in FIGS. 8 (A) and 8 (B), two blades (a first blade 27a and a second blade 27b) are stacked, and one of the cutters is used. The blade portion 27c of the first blade member 27a of the arm 25 and the first cutter arm 25
The blades 27c of the blade material 27a are inclined at the same angle so that the blade portions 27c, 27c located at positions where they abut each other are parallel to each other.
a of the second blade members 27b, 27b superposed on the
d, 27d are blade portions 27 of the first blade members 27a, 27a.
The blades 27c, 27c of the first and second blade members 27a, 27b are inclined at the same angle in the opposite directions to those of the first and second blade members 27a, 27b.
d is a shallow V-shape in a front view, and when the first and second blade members 27a and 27b overlap and close, FIG.
As shown in (A) and (B), it is configured to cut according to the outer diameter of the wire W.

The blades 27 of the cutters 27, 27
In order to prevent the cutting edges from colliding with each other between the cutting edges 27a and 27b when the cutting edges 27c and 27d cross each other, a spacer 27e (with a thickness of about 0.2 to 0.3) shown in FIG.
mm), the blade members 27a and 27b are attached to the cutter arm 25. Thus, the V-shaped cutting edge is stepped, and when the cutting edges of the upper and lower cutters 27, 27 are combined with each other to make a cut, the interference of the cutting edges can be prevented even if the cutters 27, 27 draw a circular arc and cut. .

Knob 15a of the cutting amount adjusting mechanism 15
Has a graduation 58 on the peripheral surface in 5/100 mm increments.
The rotation of the knob 15a causes the shaft 15
The positioning member 16 screwed to the screw on the outer periphery of b moves forward and backward, and the position of the inner end (thrust bearing 17) is adjusted.

In FIG. 3, reference numeral 59 denotes a start positioning sensor operated by the nut member 11, and reference numeral 60 denotes a reverse rotation command sensor for detecting the completion of the pull-out operation to reverse the motor 7.

Next, the operation of the above embodiment will be described. First, the knob 15a of the cut amount adjusting mechanism 15 is turned, and the scale 58 is set so that a cut depth corresponding to the diameter of the wire to be handled is obtained. Thereafter, the covering wire W is passed between the grippers 21 and 21 to maintain the required covering material stripping length, and then a switch (not shown) is turned on to start the motor 7. At this time, the motor 7 is driven to rotate forward, and the main shaft 3 rotates forward.

At the beginning of the forward rotation of the main shaft 3, the nut member 11 is in a fixed position by the resistance of the brake device 53, so that the lead screw shaft 10 and the nut member 11 are screwed together by the rotation of the main shaft 3. As a result, the spindle 3 moves forward.

As a result, first, the rollers 23, 23 are pushed outward by the first conical cam 12, so that the arms 22, 22 swing, and the gripping shafts 4, 4, which are fixed to the arms, respectively, rotate to move the leading ends thereof. Grippers 21, 21 are closed to grip the covered wire W.

At the same time, the roller 3 is
8, 38, the swing members 36, 36 swing outward with the shafts 35, 35 as fulcrums, and the swing of the swing members 36, 36 causes the roller 42, the lever 41, the shaft 40, the lever 43, The third conical cam 30 is pushed forward through the roller 44.

As the third conical cam 30 advances, the rollers 28, 28 of the cutter arms 25, 25 are pushed outward, and the cutter arms 25, 25 rotate about the shafts 26, 26 as fulcrums. 27, 27 are closed to cut the covering material of the covering wire W to a predetermined depth.

At this time, the rear flange 45 of the cylindrical member 46 at the tip of the first conical cam 12 is moved to the lower lever 48.
The lower lever 48 rotates about the shaft 47 as a fulcrum, and the lower lever 48 rotates on the shaft 4.
7, the roller 51 is transmitted to the upper lever 50,
The sliding cylinder 33 is advanced through 51.

When the sliding cylinder 33 moves forward, rotation is given to the sliding cylinder 33 because the female screw member 33a is screwed into the lead screw portion 34 on the machine frame 1 side.
And the cutter shaft 5 connected by the spline shaft 32
Is rotated so that the cutters 27 and 27 are cut in the coating wire W, and cut evenly over the entire circumference of the coating material.

The advance of the main shaft 3 is performed by the second conical cam 13.
After the cylindrical portion 18 at the tip of the cylindrical member 18 hits the inner end of the positioning member 16 and the second conical cam 13 stops, the pin 20 of the main shaft 3 continues to advance further by the length of the elongated hole 19 of the cylindrical portion 18. The forward movement for 20 strokes is performed by the sliding cylinder 33.
Is given as a rotation stroke.

When the pin 20 hits the front end of the elongated hole 19, the main shaft 3 cannot move forward. Therefore, the rotation of the main shaft 3 causes the nut member 11 to start moving in the direction of retreating by the lead screw. The cutter shaft 5 retreats with the covering material cut by the cutters 27,27. At this time, the third conical cam 30 is
Since the rear end is pressed at 4 and 44, it does not retreat, but retreats while the sandwiched state by the cutters 27 and 27 is maintained, and removes the covering material from the core wire.

The nut member 11 serves as the reverse rotation command sensor 6.
When it is detected as 0, the motor 7 is driven to rotate in the reverse direction, the main shaft 3 is rotated in the reverse direction, and is returned by the lead screw of the lead screw shaft 10, whereby the grippers 21, 21 kept closed by the first conical cam 12. Is released by the reverse action of the above, and the holding of the covered wire W is released. In addition, since the swing members 36, 36 return in the vertical direction due to the retreat of the second conical cam 13, the rollers 44, 44 of the levers 43, 43 also return, whereby the cutter 27 side of the lower cutter arm 25 descends and swings. When the space between the cutters 27 opens, the nut member 11 moves forward to the initial position (the position shown in FIGS. 2 and 3) by the action of the lead screw shaft 10, and when this is detected by the sensor 59, the motor 7 stops and one process is performed. finish.

As for the motor, in addition to the use of a reversible motor, a forward / reverse rotation may be obtained by switching a clutch using a one-way motor. In addition, although the case where the rotation of the cutter shaft 5 is rotated by the lead screw portion 34 through the interlocking mechanism by the movement of the first conical cam 12 is shown, a motor for rotating the cutter shaft 5 is separately provided. The cutter shaft 5 may be rotated by driving at a predetermined time.

The cutters 27, 27 are fixed such that two blades (a first blade 27a and a second blade 27b) are overlapped and their blades are V-shaped when viewed from the front. Although the case where it is provided is shown, it is more preferable that one of the two blade members 27a and 27b can be advanced and retracted in the direction of pinching the wire W, and the cutting edge of the moving blade member is crushed to reduce the wire diameter and It is preferable that the centering be surely performed by moving according to the cut amount. That is, as shown in FIG. 9 to FIG. 11 as a specific example of the configuration, the spacer 27e is interposed between the front end surfaces of the cutter holder 61 at the tip of the cutter arm 25 and the screws 62 are used. first mounted, the cutting edge with the second blade member 27 _1, 27 blade member 27 ₁ of the mounting hole 63 to be outside of the _two is movable is a long elongated hole in the wire clamping direction to the wire nipping direction 27
_1a is crushed to be flat.

[0041] the back side of the cutter holder 61, the the cutting edge 27 _1a of the blade member 27 ₁ is urging means 64 for pressing the opposite end is provided. In the illustrated example, FIG.
An intermediate portion to the cutter holder 61 as shown in (B) is pressing plate 66 which is pivotally supported is provided by the shaft 65, the distal end portion 66a of the pressing plate 66 is brought into contact with the outer end of the blade member 27 _1, The opposite end of the pressing plate 66 is in contact with the distal end of a compression spring 68 that is supported by fitting a substantially half into a support hole 67 formed in the cutter holder 61. By constantly pressing the end, the pressing plate 66 is pressed.
Of the distal end portion 66a is formed so as to urge in a direction to advance the blade member 27 ₁ is the cutting edge 27 _1a. Note that with respect to the above biasing, not limited to the compression spring 68, the other to the wire spring, which may be by a plate spring or the like, may be biased in a direction to advance the blade member 27 ₁ optionally Should be fine.

With the above-described cutter structure, when the wire W is sandwiched between the blade members 27 ₁ and 27 ₂ of both cutters, the cutting amount is made by the cutting edge 27 _2a of the immovable blade member 27 ₂ .
The cutting edge 27 _1a of the blade member 27 ₁ of the movable side contact to the outer surface of the wire W as shown in FIG. 10 (A), the then the biasing by the compression spring 68 in accordance with the depth of cut L as shown in FIG. 10 (B) Retreat and retreat.

[0043] Thus the wires W how by regardless both cutter 27 of the wire diameter is always the blade member 27 _1, 27 ₂
The center of the wire W between the cutting edges, the centering of the wire W is ensured, and the rotation of the cutter causes the wire W
Can be cut to a uniform depth over the entire circumference.

It should be noted in the above embodiment shows the case where the blade member 27 ₁ of the outer movable, is of course that the inner blade member 27 ₂ may blade member 27 ₁ ,, outside the movable as a fixed is there.

[0045]

As described above, according to the present invention, there is provided a main shaft which is slidably supported in the machine frame in the front-rear direction to perform the gripping operation of the gripper and the cutting and rotating operations of the cutter. A single motor allows forward and reverse rotation, a lead screw shaft portion is provided on the main shaft, and a nut member is screwed onto the lead screw shaft portion.The forward rotation of the main shaft causes the lead screw shaft portion to advance with respect to the nut member. The gripper and cutter are closed and the cutter is rotated, and after the main shaft stops moving forward, the nut member is retracted to pull the cutter. Since the material can be stripped off, it is possible to use a very small and quiet wire stripper without any restrictions on the place of use. And it can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of a wire stripper according to the present invention.

FIG. 2 is a vertical sectional side view of the same.

FIG. 3 is a horizontal sectional view of the same.

FIG. 4 is an explanatory diagram showing an operating state of a cutter arm portion.

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a sectional view of a cutter part of FIG. 4;

FIGS. 7A and 7B are explanatory diagrams showing the operation of a cutter.

FIGS. 8A to 8C are exploded views showing the structure of the cutter.

FIG. 9 is a plan view of a tip end portion of a cutter arm showing another embodiment of the cutter.

10A and 10B are front views of a state before cutting the wire coating material and a state after cutting the wire coating material.

11A is a cross-sectional view of FIG. 10A, and FIG. 11B is a cross-sectional view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Machine frame 3 Main shaft 4 Grip shaft 5 Cutter shaft 6 Spline shaft 7 Motor (reversible motor) 10 Lead screw shaft portion 11 Nut member 12 First conical cam 13 Second conical cam 15 Cut amount adjusting mechanism 16 Positioning member 18 Cylindrical portion Reference Signs List 21 Gripper 25 Cutter arm 27 Cutter 27a, 27b Blade material 27 ₁ First blade material 27 ₂ Second blade material 30 Third cone cam 32 Spline shaft 33 Sliding cylinder 34 Lead screw part 36 Swing member 46 Tube member 53 Brake Apparatus 61 Cutter holder 63 Mounting hole 64 Biasing means 66 Pressing plate 68 Compression spring

Claims (6)

[Claims] 1. A gripper for gripping a coating material at an end portion of a coating wire at a predetermined position, and a cutter for sandwiching and cutting the coating material at a position immediately after the gripper, and the coating material is cut by the cutter. In the wire stripper, which is subsequently pulled to strip the covering material from the core wire, the main shaft is slidably supported in the machine frame in the front-rear direction, and is rotatable forward and reverse so as to perform the gripping operation of the gripper and the clamping and cutting operation by the cutter. The main shaft is provided with a lead screw shaft portion, and a nut member is screwed onto the lead screw shaft portion.The forward rotation of the main shaft causes the lead screw shaft portion to move forward to perform the closing operation of the gripper and the cutter. After stopping, the nut member is retracted by the lead screw of the lead screw shaft portion, the cutter is pulled, and the cut coating material is removed from the core wire. Wire stripper. 2. A gripper for gripping a coating material at an end portion of a coating wire at a predetermined position, and a cutter for sandwiching and cutting the coating material immediately after the gripper, and the coating material is cut by the cutter. In the wire stripper, which is subsequently pulled to strip the covering material from the core wire, the main shaft is slidably supported in the machine frame in the front-rear direction, and is rotatable forward and reverse so as to perform the gripping operation of the gripper and the clamping and cutting operation by the cutter. The main shaft is provided with a lead screw shaft portion, and a nut member is applied to the lead screw shaft portion by applying a load with a brake device and screwed into the main shaft. A first conical cam for rotating the coating wire by a predetermined angle to grip and release the coating wire, and a cutter shaft on which a middle portion of a pair of cutter arms is pivotally supported at a tip end. A second conical cam is provided to advance and retreat the slidably fitted third conical cam so as to rotate the cutter arm between a closed position where the tip end cutter cuts the coating material of the coating wire and a release position. , The first cone cam includes:
An interlocking mechanism is provided to advance the slide cylinder connected to the rear end of the cutter shaft so that rotation is given by the lead screw portion on the machine frame side during the advance, and the lead screw shaft is rotated by forward rotation of the main shaft. The nut member is retracted by the lead screw of the lead screw shaft portion after the main shaft is stopped and the cutter is pulled, and the cut coating material is simply pulled out from the core wire. A wire stripper characterized by being operated by one motor. 3. The interlocking mechanism engages a cylindrical member substantially integral with the first conical cam and having flanges at front and rear ends, and allows a predetermined range of movement between the flanges of the cylindrical member at the distal end. A lower lever on which a roller is pivotally mounted, and an upper lever which pivots in conjunction with pivotal movement of the lower lever, wherein a roller pivotally attached to the tip is engaged with a circumferential groove of the sliding cylinder, When the flange on the rear end side of the cylindrical member pushes the roller of the lower lever, the sliding cylinder moves forward and rotation is given to the cutter shaft by the lead screw portion, and the cutter circulates around the wire coating material. 3. The wire stripper according to claim 2, wherein the wire stripper is configured to cut the wire. 4. A cutting amount adjusting mechanism for determining a position at which a front end of the second conical cam comes into contact, adjusting an amount of advance of the third conical cam, and setting a cutting depth by the cutter. The wire stripper according to claim 2. 5. A cutter attached to each end of said cutter arm is constituted by a first blade member and a second blade member which are located at positions where the blade portions abut each other when said cutter arm is closed, The blade portions of these blade members are inclined at the same angle so that the blade portions of the first blade member and the blade portions of the second blade member are parallel to each other, and the blade portions of the first and second blade members. The portion is formed in a V-shape which is shallow in a front view by the portion, and the first and second blade members are overlapped and closed so as to be cut in accordance with the outer diameter of the wire. The wire stripper as described. 6. One of the first and second blade members constituting the cutter is movably attached to a cutter holder of a cutter arm in a wire-clamping direction, and the blade edge of the blade member is flattened. 6. A wire stripper according to claim 5, further comprising a biasing means for biasing the wire in a wire clamping direction, wherein the wire stripper retracts against the bias when the wire is clamped to center the wire.