JPH0741536Y2 - Electric wire bending machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire bending machine that can easily and accurately bend electric wires having different cross-sectional areas of about 22 to 100 mm ² in thickness.

[0002]

2. Description of the Related Art Conventionally, when bending an electric wire used in a switchboard or the like, a relatively thin electric wire is bent by using a thumb nail, and a relatively thick electric wire is bent by using a corner of a desk or the like. . However, when a thin electric wire is bent using the nail of a thumb, there is a drawback that the fingertip is painful, and the shape of the electric wire is easily changed by an operator, so that the electric wire shape cannot be reproducible.

On the other hand, when a thick electric wire is bent using the corners of a desk, the surface of the electric wire is damaged, and when complex bending is required, the dimensional accuracy cannot be improved, so that the electric wire must be re-bent. Sometimes the shape went messed up and it was remade from the beginning, resulting in waste of quality, materials, and work time. Further, since it is difficult to fold a thick and short electric wire, it is necessary to cut a long wire to fold it, and then to cut off the end, resulting in waste of material.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and it is possible to bend relatively thin wires and relatively thick wires easily and with good dimensional accuracy without scratching the surface. It was completed to provide an electric wire bending machine.

[0005]

SUMMARY OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, has a pin serving as a bending fulcrum at a central position.
Consists of a movable ring which can body and rotated about its having a, a projection provided respectively on the upper surface of the eccentric position and movable ring away from the pin body, depending on the thickness of the wire to bend the projections It is characterized in that a polygonal fixed piece and a movable piece having different distances from the fitting hole to the side surface are attached.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. In FIG. 1, 1 is the main body of the wire bending machine,
Reference numeral 2 is a movable ring that can rotate around the main body 1.
The main body 1 is composed of a cylindrical portion 1a in contact with the movable ring 2, a central flange portion 1b, and a lower end protrusion 1c. If the workbench has a vise, the main body 1 can be fixed by using the projection 1c. If the workbench does not have a vise, the projection 1c is fitted into the recess 3a on the upper surface of the holder 3 so that the holder 3 It can be fixed to the workbench using the screw 4 at the bottom of the. In order to prevent the recess 3a from shifting in the longitudinal direction, the movement prevention pin 5 on the upper surface of the holder 3 can be fitted into the hole 6 of the flange portion 1b of the main body 1.

The movable ring 2 is attached so as to be rotatable around the cylindrical portion 1a of the main body 1, and has a handle 7. The rotation angle of the movable ring 2 can be read by the scale on the upper surface of the main body 1, but in the embodiment, a stopper ring 8 is attached above the flange portion 1b of the main body 1 in order to improve work efficiency. The position of the stopper ring 8 can be adjusted by loosening and rotating the bolt 9 and then tightening the bolt 9 again at a predetermined position. Further, the stopper pin 10 on the upper surface of the stopper ring 8 comes into contact with the pin 11 on the movable ring 2 side so that the rotation of the movable ring 2 can be stopped at a predetermined position. For this reason, first the stopper ring 8
After setting the position, the rotation angle of the movable ring 2 can be regulated by simply rotating the handle 7.

At the center position of the cylindrical portion 1a of the main body 1 described above, the pin 12 that contacts the inner surface of the electric wire W to be bent is provided.
Is provided. The pin 12 has a small diameter portion 12a and a large diameter portion 12b as shown by the one-dot chain line, and a columnar portion so that either end projects to the upper surface of the main body 1 depending on the thickness of the electric wire W. It is used as a bending fulcrum by replacing it with the hole 1a.

Further, the main body 1 is separated from the pin 12 of the cylindrical portion 1a.
A polygonal protrusion 13 for fitting a fixed top 14 is provided at the eccentric position. This projection 13 has a fitting hole 14
A polygonal fixed piece 14 having a is fitted, and the side surface of the fixed piece 14 is applied to the outer surface of the base of the electric wire W to be bent. The distance from the fitting hole 14a to the four side surfaces of the fixed top 14 is changed according to the thickness of the electric wire. In the case of the embodiment, the four side surfaces have cross-sectional areas of 22 mm ² , 38 mm ² , and 60 m, respectively.
It is configured to support four types of electric wires of m ² and 100 mm ² . Then, the direction can be changed so that the side surface corresponding to the electric wire W contacts the electric wire W, and the projection 13 can be replaced. In addition, in order to facilitate identification, a fixed frame
It is preferable to put the indication of the thickness of the electric wire in 14.

Further, a projection 15 for a movable piece is also provided on the upper surface of the movable ring 2, and the polygonal movable piece 16 is replaced according to the thickness of the electric wire W in the same manner as described above. This movable top 16 also has different distances from the fitting hole 16a to the four side surfaces. The movable piece 16 is applied to the outer surface of the tip of the electric wire W to be bent.

In the embodiment, a rail 17 with a scale is provided on the side of the main body 1, and a movable base 18 is placed on it. The base 18 can be positioned by means of fixing thumbscrews 19. A rotatable ate 20 is provided at the tip of the base 18, and the base end surface of the electric wire W to be bent is brought into contact with the ate 20 so that the bending position can be accurately determined. Reference numeral 21 is a pedestal for the bent electric wire W when performing complex bending.

[0012]

In order to bend the electric wire W with the electric wire bending machine of the present invention thus constructed, first, the pin 12 is vertically adjusted according to the thickness of the electric wire W, and the fixed piece 14 and the movable piece 16 are adjusted. The direction is changed according to the thickness of the electric wire W, and the electric wire W is inserted into the protrusion 13 and the protrusion 15 and the position of the ate 20 is adjusted. Further, the position of the stopper ring 8 is adjusted according to the bending angle. Next, the handle 7 is operated to rotate the movable ring 2 until the side surface of the fixed piece 14 on the pin 12 side and the side surface of the movable piece 16 are substantially on the same straight line.

Next, the electric wire W to be bent is passed between the pin 12, the fixed piece 14 and the movable piece 16, and the base end surface of the electric wire W is applied to the ate 20 to determine the position. Then, when the movable ring 2 is rotated by the handle 7 until the pin 11 hits the stopper pin 10 of the stopper ring 8, the tip side of the electric wire W is forcibly pressed by the side surface of the movable piece 16 as shown in the drawing, and the pin 12 is pushed. Bent as the center.

As described above, according to the present invention, the direction of the fixed piece 14 and the movable piece 16 is changed according to the thickness of the electric wire W to project the projection.
Since it is used by being fitted to 13 and the projection 15, in the case of a thick electric wire W, widen the distance between the pin 12 and the side surface of the fixed piece 14,
Further, in the case of the thin electric wire W, the distance between the pin 12 and the side surface of the fixed piece 14 can be narrowed and used. Further, the side surface of the movable piece 16 can be aligned with the side surface of the fixed piece 14 to start the bending. Therefore, the electric wires W of various thicknesses can be bent by the same electric wire bending machine. Moreover, since the bending is performed around the cylindrical pin 12, the electric wire W is not damaged, and the electric wire W can be bent from an accurate position only by applying the base end surface of the electric wire W to the ate 20. Further, once each part is set, a large number of electric wires W can be bent efficiently and accurately by only operating the handle 7. Note that composite bending can also be easily performed.

[0015]

As described in detail above, the electric wire bending machine of the present invention is a polygonal fixing in which the distance from the fitting hole to the protrusion to the side surface is changed according to the thickness of the electric wire to be bent. Since the top and the movable top are used, the electric wire can be easily bent with high dimensional accuracy regardless of the thickness of the electric wire. In addition, the electric wire bending machine of the present invention does not have the possibility of damaging the nails of the worker as in the conventional case. Therefore, the present invention has an extremely great practical value as an electric wire bending machine that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Main body 2 Movable ring 13 Projection 14 Fixed piece 14a Fitting hole 15 Projection 16 Movable piece 16a Fitting hole

Claims (1)

[Scope of utility model registration request] 1. A consists <br/> body with a as a fulcrum bending a center position pin and a movable ring which can rotate around its, respectively provided on the upper surface of the eccentric position and movable ring away from the pin body An electric wire bending machine characterized in that a polygonal fixed piece and a movable piece whose distance from the fitting hole to the side surface to the side surface is changed according to the thickness of the electric wire to be bent are attached to the formed projection. .