JP2000123661A - Clamp for electric wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire clamp capable of grasping electric wires having different diameters and preventing dislocation of the center axes of the grasped wires even in case diameter differs. SOLUTION: A pair of clamping blocks 14 having a recess 15 consisting of abutting surfaces 15A and 15B grasping an electric wire W are supported rotatably on a supporting block 11 by a rotary arm 13. The angle from the perpendicular S to one abutting surface 15B positioned on the side with rotation center of the grasping block 14 in the horizontal position condition is set greater than the angle from the perpendicular S to the other abutting surface 15A. Thereby dislocation of center axes of electric wires W can be suppressed even in case diameter differs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire gripping clamp, and more particularly to a clamp for gripping an electric wire used in a machine for cutting an electric wire forming a wire harness, for example.

[0002]

2. Description of the Related Art Conventionally, as an electric wire gripping clamp, one disclosed in Japanese Patent Application Laid-Open No. 6-96630 is known. As shown in FIG. 9, a plurality of the electric wire gripping clamps 1 are fixed to a chain (not shown), and each carry the electric wire W while holding it.
The pair of transport claws 2 move while gripping the wires W, and release the transport claws 2 to send the wires W to the product receiver 3. A concave portion 2 a having a curved surface corresponding to the peripheral surface of the electric wire W is formed on each surface of the pair of transport claws 2, which sandwich the electric wire W therebetween. Then, after releasing the electric wire W from the transport claw 5b, the electric wire gripping clamp 1 returns to the original position by grasping the electric wire W again by rotating in a loop shape.

[0003]

However, in the above-described electric wire gripping clamp, when electric wires having different diameters are conveyed, it is necessary to change the size of the concave portion 2a of the conveying claw 2 according to the electric wire. It was necessary to replace the transport claw 2 itself. In addition, since a transport chain is used, the number of parts is large, the cost is high, and the rattling is likely to occur.

Accordingly, an object of the present invention is to provide an electric wire gripping clamp capable of gripping electric wires having different diameters and preventing the center axis from being shifted between the electric wires having different diameters to be gripped. And

[0005]

According to the first aspect of the present invention,
A support block, and a pair of gripping blocks each having a holding surface for holding the electric wire at a predetermined position and rotatably supported by the support block between a position where the electric wire is held and at least a horizontal position; A gripping recess provided on the holding surface and having two abutting portions that abut against the outer periphery of the wire, wherein the gripping block is in a horizontal position on a rotation center side of the gripping block. An angle from a perpendicular to one of the abutting surfaces is set to be larger than an angle from a perpendicular to the other abutting surface, and the electric wire is coaxially located regardless of the diameter of the electric wire.

Therefore, according to the first aspect of the present invention, the angle formed between one contact surface and the perpendicular at the horizontal position of the holding block at the horizontal position is the angle formed between the other contact surface and the perpendicular. Since it is set to be larger, it is possible to suppress the displacement of the central axis of the electric wire when gripping electric wires having different diameters. Further, it is possible to prevent a portion on one contact surface side from hitting the electric wire as the grip block rotates when the electric wire is gripped.

According to a second aspect of the present invention, there is provided the electric wire gripping clamp according to the first aspect, wherein the pair of gripping blocks comprises:
It is characterized in that the support block is fixed to a pair of rotation arms that are rotatably supported at respective rotation centers provided at different positions on the support block.

In the present invention, since the gripping block is rotated about the rotation center provided at different positions, when gripping electric wires having different diameters, one contact surface of the gripping concave portion and the other contact surface are grasped. Thus, it is possible to prevent the central axis of the electric wire that abuts from shifting due to the difference in the diameter.

According to a third aspect of the present invention, there is provided the electric wire gripping clamp according to the first or second aspect, wherein the support block moves in a horizontal direction while the electric wire is gripped and the electric wire is conveyed. It is characterized by turning to a horizontal position and returning to an original position.

According to the present invention, the electric wire gripped by the grip block is conveyed in the horizontal direction by the horizontal movement of the support block on which the grip block is supported. After the electric wires are conveyed, the support block returns to the original position, so that the electric wires can be conveyed again, and the electric wires can be sequentially conveyed.

According to a fourth aspect of the present invention, there is provided the electric wire gripping clamp according to any one of the first to third aspects, wherein the gripping block is formed by arranging a plurality of gripping pieces in a comb shape. The grip pieces of the other grip block can be inserted between the grip pieces of one grip block.

According to the present invention, the grip block is constituted by a plurality of grip pieces, a gap is formed between the grip pieces, and the comb teeth are inserted so that the grip piece on the other grip block side is inserted into the gap. When the pair of gripping blocks sandwich the electric wire, the pair of gripping blocks can be brought close to each other so as to sandwich the electric wire at the contact surface set as described above.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, details of an electric wire gripping clamp according to the present invention will be described with reference to the embodiments shown in FIGS.

As shown in FIG. 1, the electric wire gripping clamp 10 of the present embodiment is fixed to a pair of pivot arms 13 pivotally supported by a support block 11 and to each of the pivot arms 13. And a grip block 14.

In the present embodiment, the rotating shaft 1 which is parallel to the upper part of the support block 11 having a substantially rectangular parallelepiped shape at a predetermined interval is provided.
A rotating arm 13 is supported on each of 2 and 12.
The pivot arm 13 is defined so that the angle between the horizontal position shown by the solid line in FIG. 1 and the vertical position shown by the two-dot chain line is approximately 90 degrees. . These rotating arms 13 and 13 are driven to rotate by a drive mechanism (not shown) that performs, for example, hydraulic driving, pneumatic driving, electric power driving, and the like. The electric wire W is sandwiched between the gripping blocks 14.

The gripping blocks 14 are formed with gripping recesses 15 on the sides facing each other when approaching each other. As shown in FIG. 1, the holding recess 15 has a contact surface 15A that forms an angle α with a perpendicular S perpendicular to the rotating arm 13 and a contact surface 15B that forms an angle β with the perpendicular S.
And is formed from The relationship between the angle α and the angle β is set so that α <β. In the present embodiment, the angle β is set to be about 1.5 times the angle α. In addition, the angle α and the angle β satisfy the above relationship, and the distance between the rotation axes 12 and the rotation axis 1
The length is appropriately set in consideration of the length from 2 to the portion where the contact surfaces 15 </ b> A and 15 </ b> B of the holding recess 15 join (the bottom of the holding recess 15).

The grip block 14 has a contact surface 15A.
(Three) gripping pieces 16A and contact surfaces 15B
And a plurality of (three) gripping pieces 16B having the following. These gripping pieces 16A are arranged so as to be parallel to each other at a predetermined interval in the width direction of the gripping block 14. Similarly, the gripping piece 16B is arranged corresponding to the gripping piece 16A. Further, the gripping blocks 14 are displaced by a predetermined distance in the rotation axis direction so that the other gripping pieces 16A, 16B1 can be inserted into the respective gaps of the gripping pieces 16A, 16B of one gripping block 14. Have been. With such a configuration, the holding surfaces 14A and 15B can be brought into contact with the outer peripheral surface of the electric wire W by mutually overlapping the gripping blocks 14. FIG. 2A shows the holding block 1.
FIG. 2B shows the open state in which the grippers 14 and 14 are in the horizontal position, and the rotating arm 13 is driven to rotate so that the gripping blocks 14 approach each other and the gripping pieces 16A and 16B overlap each other. The state is shown.

FIG. 3 shows an electric wire gripping clamp 1 according to the present embodiment.
FIG. 4 is an explanatory view showing a state where an electric wire W having different diameters is gripped. In this embodiment, as shown in the figure, even if the electric wire W1 having a short diameter and the electric wire W2 having a long diameter are gripped by the holding recesses 15 of the holding block 14, the center axis of the wire W1 and the center of the wire W2 are formed. The axis can be matched. Therefore, when the electric wire is conveyed by the electric wire gripping clamp 10, the electric wire can be always conveyed at the same height. For this reason, when supplying and transporting the electric wire to a device for attaching a terminal fitting or the like to the end of the electric wire, complicated operations such as setting of the device and replacement of the grip block 14 are not required, and a smooth operation can be performed. I do.

FIGS. 4 and 5 show a comparative example of the electric wire gripping clamp 10 of the present embodiment. In the wire gripping clamp according to the comparative example, the same parts as those of the wire gripping clamp 10 of the present embodiment are denoted by the same reference numerals. In the wire gripping clamp 10 of the comparative example, as shown in FIG.
And the angle between the contact surface 15B and the perpendicular S are both set to the same angle α. In the comparative example having such a setting, as shown in FIG.
2 between the contact surfaces 1 along the outer circumference of the electric wire W2.
When the rotating arm 3 is rotated about the rotating shaft 12 so that the contact surface 5B comes into contact with the contact surface 15B, the central axis of the thick electric wire W2 moves upward as compared with when the thin electric wire W1 is sandwiched. As a result, a deviation H occurs between the center axis of the sandwiched thin electric wire W1 and the center axis of the thick electric wire. In contrast, FIG.
In the wire gripping clamp 10 of the present embodiment shown in FIG. 1, the angle of the contact surface 15A and the contact surface 15B with respect to the perpendicular S is β>
By setting α, the thin wire W1 and the thick wire W2
No deviation occurs between the center axes of the two.

As described above, the electric wire gripping clamp 10 of the present embodiment
Next, an automatic electric wire cutting and crimping apparatus to which the electric wire gripping clamp 10 of the present embodiment is applied will be described with reference to FIGS. 6 to 8.

FIG. 6 is a plan view showing the entirety of the automatic cutting and pressing device 20. The automatic cutting and crimping apparatus 20 includes, for example, an electric wire straightening unit 21 in which a plurality of pairs of straightening rollers 22 for straightening an electric wire W supplied from a take-up reel are arranged to face each other. Inspection unit 23 for measuring and sending out length, first terminal crimping unit 24 for crimping end fittings to the ends of electric wires, and cutting and stripping of insulation wire W sent out from inspection unit 23 Cutting section 25, a turning section 26 for moving the end of the wire from which the insulation coating has been stripped to the first terminal crimping unit 24, and a predetermined length cut and sent by the cutting stripping section 25. Wire W while grasping the front end of the wire W
And a second terminal crimping unit 2 for crimping a terminal fitting to an end of the electric wire W carried by the carrying unit 27
8 and an electric wire sending section 29 for sending out the electric wire W to which the terminal is attached by the second terminal crimping unit 28.

An electric wire W supplied from a take-up reel (not shown) is moved in the electric wire straightening section 2 along the y direction indicated by an arrow in the figure.
By passing between the first straightening rollers 22 to 22,
By being bent between the straightening rollers 22, straightening is performed. The electric wire W that has passed through the electric wire straightening unit 21 is set so as to be sent out by the sending length set by the scale sending unit 23. Here, at the initial stage when the electric wire W is set for the first time, the leading end of the sent electric wire W is configured such that the insulating coating is peeled off at a predetermined length range at the cut and stripped portion 25. In the turning section 26,
The electric wire W is turned around a turning shaft 26 a as a fulcrum by a turning driving unit (not shown), and the end of the electric wire W is connected to the first terminal crimping unit 24.
It is designed to move to the side. The first terminal crimping unit 24 is configured to attach a terminal fitting to an end of the electric wire W moved by the swivel unit 26. As shown in FIG. 6, the electric wire W to which the terminal fitting has been attached by the first terminal crimping unit 24 is returned to the original position by the revolving portion 26 and arranged along the y direction. After that, the electric wire W is sent to the measurement sending unit 2.
At 3, the wire is sent out by a predetermined length, and the cut and stripped portion 25 cuts the wire W and peels off the coating. Next, the electric wire W cut by the cutting is conveyed by the above-described conveying unit 27 toward the second terminal crimping unit 28 in the x direction indicated by an arrow in the drawing.

Next, the configuration of the transport section 27 will be described with reference to FIGS. The transport unit 27 is provided with the electric wire straightening unit 2 described above.
1, arranged along the x direction which is substantially perpendicular to the direction in which the electric wire W is sent out in the scale sending section 23 and the turning section 26. The transport section 27 in this device has three fixed clamps 10A1, 10A2, and 10A3 arranged and fixed at equal intervals along the x direction.
Each of these fixed-type electric wire gripping clamps 10A1 to 10A3 has the same configuration as the electric wire gripping clamp 10 of the above-described embodiment, and the support block 11 having the pair of gripping blocks 14 is Is fixed to the apparatus main body (not shown).

A transport frame 30 is arranged along the transport direction beside the row of the fixed type electric wire gripping clamps 10A1 to 10A3 arranged as described above. The transport frame 30 is fixed via a connecting member 33 to a piston rod 32 that is reciprocally driven by a reciprocating drive cylinder 31 fixed to the apparatus main body side. In the figure, 34 is
This is a stopper for restricting the projection of the piston rod 32 beyond a predetermined length.

Further, on the surface of the transport frame 30 facing the fixed wire grips 10A1 to 103, four transport wire grips 10B1 to 10B4 are provided.
Are sequentially fixed along the transport direction. The transfer electric wire gripping clamps 10B1 to 10B4 are set to have the same interval as that of the fixed electric wire gripping clamps 10A1 to 10A3. Further, the height of the transporting electric wire gripping clamp 10B is set to the same height as the fixed type electric wire gripping clamp 10A.

Then, of these transporting wire gripping clamps 10B1 to 10B4, the above-mentioned cut and peeled portion 25 is used.
Is located at a position where the electric wire W can be pinched in the passage of the electric wire W in the cut and peeled portion 25 in a state where the piston rod 32 projects maximum from the reciprocating drive cylinder 31 (hereinafter referred to as a first position). Position). That is, the cutting skin peeling part 25
The wire W, which has been cut at the above and the terminal fitting is attached by the first terminal crimping unit 24, is cut and stripped in a state of being sent out by a predetermined length. End (this part has no terminal fittings)
Are arranged so that the transporting wire gripping clamp 10B1 at the first position can grip. Here, the stroke of the piston rod 32 of the reciprocating drive cylinder 31 is set so as to correspond to the interval between the above-described transport wire clamps 10B1 to 10B4.

For this reason, the transport wire gripping clamp 10B
On the 1-10B4 side, as shown in FIG. 8, the transport wire clamp 10B1 at the first position moves to the position of the fixed wire gripping clamp 10A1 (hereinafter, referred to as the second position), and moves to the first position. The reciprocating operation of returning is repeated. Similarly, the other electric wire gripping clamps 10B2 to 10B4 perform the reciprocating operation by the distance between the fixed electric wire gripping clamps 10A1 to 10A3 (the distance between the electric wire gripping clamps 10B1 to 10B4 is the same). The position of the fixed electric wire gripping clamp 10A2 is the third position, the position of the fixed electric wire gripping clamp 10A3 is the fourth position, and the piston rod 32 moves in the transport direction so that the amount of protrusion from the reciprocating drive cylinder 31 is the shortest. When it becomes, the wire clamp 10B4
Is defined as a transfer position where the object moves.

The above-mentioned second terminal crimping unit 28 is arranged on the side of the fixed electric wire gripping clamp 10A3 located at the fourth position.
The terminal fitting is attached to the end of the wire W gripped by the terminal fitting not attached. In addition, an extraction wire gripping clamp 10C that receives the wire W can be located at the transfer position. The take-out electric wire gripping clamp 10C is provided in the above-described electric wire sending section 29.

Here, the take-out electric wire gripping clamp 10C
The configuration of the electric wire sending section 29 including the same will be described. As shown in FIG. 7, the take-out wire gripping clamp 10C is the same as the wire gripping clamp 10 of the above-described embodiment.
The configuration is substantially the same as described above. The difference from the electric wire gripping clamp 10 is that a pivot shaft 41 integrally provided at the lower end of the support block 11 is pivotally supported on the device base side, and can be rotated around the pivot shaft 41 as a rotation axis. ing. The pivot shaft 41 is integrally provided with a reversing gear 42. The driving gear 43 is combined with the reversing gear 42 so as to mesh with the reversing gear 42. The driving gear 44 is integrally provided with a rotating shaft 44, and the rotating shaft 44 is supported by a member on the device base side. One end of a cam arm 45 is integrally fixed to the rotation shaft 44 of the drive gear 43. A long guide hole 45A is formed along the longitudinal direction at an intermediate portion near the other end of the cam arm 45. A guide projection 30A protruding from a predetermined position at an end of the transport frame 30 is slidably fitted in the guide long hole 45A. Therefore, with the reciprocating operation of the transport frame 30, the cam arm 45 can be rotated in the clockwise direction and the counterclockwise direction in FIG. 7 while the guide projection 30A slides on the guide long hole 45A of the cam arm 45. It has become. Along with this rotation, the drive gear 43 also rotates bidirectionally by a predetermined angle, and rotates the reversing gear 42 meshing with the drive gear 43 in a direction opposite to the drive gear 43. With the rotation of the reversing gear 42, the support block 11 moves between a position indicated by a two-dot chain line and a transfer position.

Next, the operation and operation of the transport unit 27 having such a configuration will be described.

First, the front end of the electric wire W cut and cut by the cutting and peeling portion 25 (the terminal metal fitting is not attached to this portion) is a transfer electric wire gripping clamp 10B at the first position.
A pair of gripping blocks 14 are gripped between one pair. Here, the amount of protrusion of the piston rod 32 of the reciprocating drive cylinder 31 is maximum. Next, the transport frame 30 is moved by driving the reciprocating drive cylinder 31 so that the amount of protrusion of the piston rod 32 is minimized while the transport wire gripping clamp 10B1 grips the wire W. Due to this movement, the electric wire gripping clamp 10B1 moves the electric wire W
Is moved to the second position while holding. Prior to the movement of the transporting wire gripping clamp 10B1, drive control is performed so that the pair of gripping blocks 14, 14 of the fixed wire gripping clamp 10A1 are opened. And the second
At the position, the fixed-type wire gripping clamp 10A1 grips the wire W gripped by the transporting wire gripping clamp 10B1, and then releases the pair of gripping blocks 14, 14 of the transporting wire gripping clamp 10B1 to hold the wire W in a fixed wire gripping manner. Transfer to the clamp 10A1 side. At this time, since the gripping blocks 14 and 14 of the transporting wire gripping clamp 10B1 are open in a horizontal state, the fixed wire gripping clamp 10A1 is held.
Is lower than the height of the electric wire W to be gripped. For this reason, the transporting wire gripping clamp 10B1 can return to the first position without being disturbed by the wire W during movement by maintaining this state.

Next, when the transport wire gripping clamp 10B1 transports the electric wire W to the fixed wire gripping clamp 10A1 and returns to the first position, the transporting wire gripping clamp 10B2 provided on the transport frame 30 moves the fixed electrical wire gripping clamp 10B2. It moves to a second position where the grip clamp 10A1 is located. After the electric wire gripping clamp 10B2 grips the electric wire W, the fixed electric wire gripping clamp 10A1 releases the electric wire W and moves the gripping blocks 14, 14 to a horizontal state.

Next, when the transfer frame 30 is driven and moves in the transfer direction, the transfer wire gripping clamp 10B2 moves to the third position while holding the wire W. And
Similarly, the electric wire W is transferred to the fixed electric wire gripping clamp 10A2. The electric wire W gripped by the fixed-type wire gripping clamp 10A2 is similarly moved to the fourth by the transport gripping clamp 10B3.
It is delivered to the fixed electric wire gripping clamp 10A3 at the position. At the fourth position, the above-described second terminal crimping unit 28 is arranged, and a terminal fitting is crimped to the end of the electric wire W. The wire W to which the terminal fitting is crimped is transported to the delivery position by the transport wire gripping clamp 10B4. At this time, the takeout wire gripping clamp 10C moves to the transfer position in synchronization with the transport wire gripping clamp 10B4. That is, when the transfer wire gripping clamp 10B4 moves to the transfer position, the transfer frame 30 also moves in the same direction at the same time. Therefore, the guide projection 30A pushes the cam arm 45, thereby driving the drive gear 43 to rotate and invert. The gear 42 is rotated in the clockwise direction, and accordingly, the take-out electric wire gripping clamp 10C moves to the delivery position. At this time, take-out wire gripping clamp 1
The pair of gripping blocks 14, 14 of 0C are driven so as to be in an expanded state as shown in FIG.

Then, an electric wire gripping clamp 10C for extraction
Is the transport wire gripping clamp 1 located at the delivery position
The electric wire W gripped at 0B4 is gripped. Thereafter, the transport wire gripping clamp 10B4 releases the wire W and moves toward the third position together with the transport frame 30. Since this movement also moves the guide projection 30A, the cam arm 45
Is a clockwise clockwise rotating electric wire gripping clamp 1
0C is moved to the position shown by the dashed line in FIG. The take-out electric wire gripping clamp 10C is the gripping block 1
By opening the wires 4 and 14, the electric wire W can be dropped onto a receiving tray (not shown). Both ends of the electric wire W dropped onto the receiving plate are finished products to which terminal fittings are attached by the first terminal crimping unit 24 and the second terminal crimping unit 28.

The automatic cutting and crimping apparatus 20 to which the wire gripping clamp according to the present invention is applied has been described above.
(A3, 10B1 to 10B4, 10C), the angle formed between one contact surface 15B located on the rotation center side of the gripping block 14 and the perpendicular S is set to be larger than the angle formed between the other contact surface and the perpendicular. ing. For this reason, when handling the electric wires W with different diameters in the automatic cutting and crimping device 20, it is possible to suppress the center axis of the electric wires W from being shifted due to the different diameters. Further, when the grip block 14 is rotated when gripping the electric wire W, one of the contact surfaces 15B
The side portion can be prevented from hitting the electric wire. The transfer section 27 in the automatic cutting and pressing apparatus 20 described above.
In the description of the above, the description has been made by focusing on one cut wire W, but the newly cut wire W is sequentially transferred for each stroke of the transfer frame 30, and smooth and efficient transfer is performed. It can be carried out.

Although the embodiment has been described above, the present invention is not limited to this, and various design changes accompanying the gist of the configuration are possible.

[0037]

As is apparent from the above description, according to the first and second aspects of the present invention, it is possible to suppress the displacement of the central axis of the electric wire when gripping electric wires having different diameters. Can be. For this reason, it is possible to handle electric wires having different diameters, and it is possible to omit replacement of parts and the like. Further, it is possible to prevent a portion on one contact surface side from hitting the electric wire as the grip block rotates when the electric wire is gripped.

According to the third aspect of the invention, in addition to the effects of the first and second aspects, the electric wires can be sequentially conveyed in the horizontal direction, and can be applied to a conveying device. This makes it possible to carry the wire with a small displacement of the center axis of the electric wire in the vertical direction.

According to the invention set forth in claim 4, claims 1 to 1 are provided.
In addition to the effect of claim 3, since the gripping pieces on the other gripping block side are inserted into the gaps between the gripping pieces in one gripping block, the outer peripheral surfaces of the electric wires gripped between the gripping blocks are contacted with each other. As a result, it becomes possible to move the pair of gripping blocks.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of an electric wire gripping clamp according to the present invention.

FIG. 2A is a perspective view illustrating a state in which a gripping block of an electric wire gripping clamp according to an embodiment is released, and FIG. 2B is a perspective view illustrating a state in which gripping is performed by the gripping block.

FIG. 3 is an explanatory view showing a state in which electric wires having different diameters are gripped in the embodiment.

FIG. 4 is an explanatory view showing a state in which electric wires having different diameters are gripped in a comparative example.

FIG. 5 is a side view showing a wire gripping clamp of a comparative example.

FIG. 6 is a plan view of an automatic cutting and crimping apparatus to which the electric wire gripping clamp of the embodiment is applied.

FIG. 7 is a side view showing a transport unit in the automatic cutting and crimping apparatus to which the electric wire gripping clamp according to the embodiment is applied.

FIG. 8 is a plan view showing a transport unit in the automatic cutting and crimping apparatus to which the electric wire gripping clamp according to the embodiment is applied.

FIG. 9 is a side view of a transfer device provided with a conventional wire holding clamp.

[Explanation of symbols]

 S Perpendicular wire W Electric wire 10 Electric wire gripping clamp 11 Support block 12 Rotating shaft 13 Rotating arm 14 Holding block 15 Holding recess 15A, 15B Contact surface 16A, 16B Holding piece 30 Transfer frame

Claims (4)

[Claims] 1. A support block having a holding surface for holding an electric wire (W) at a predetermined position, and supported by the support block so as to be rotatable between a position where the electric wire is held and at least a horizontal position. An electric wire gripping clamp comprising a pair of gripping blocks, and a gripping recess provided on the holding surface and having two abutting portions that abut against an outer periphery of the wire, wherein the gripping block is in a horizontal position. The angle from the perpendicular of one contact surface located on the rotation center side of the grip block is set to be larger than the angle from the perpendicular of the other contact surface, and the electric wire is positioned coaxially regardless of the wire diameter. An electric wire gripping clamp, 2. The electric wire gripping clamp according to claim 1, wherein the pair of gripping blocks are rotatably supported at respective rotation centers provided at different positions on the support block. An electric wire gripping clamp fixed to an arm. 3. The electric wire gripping clamp according to claim 1, wherein the support block moves in a horizontal direction in a state where the electric wire is gripped, conveys the electric wire, and then turns to a horizontal position. An electric wire holding clamp characterized by returning to its original position. 4. The electric wire gripping clamp according to claim 1, wherein the gripping block is formed by arranging a plurality of gripping pieces in a comb shape. The electric wire gripping clamp, wherein the gripping pieces of the other gripping block can be inserted between the gripping pieces.