JPH04319035A - Straightening device for bend of electric wire - Google Patents

Abstract

PURPOSE:To surely straighten bend irrespective of the size of a wire diameter by operating two dial type cam bodies attached pivotally to a fixed supporter and a movable supporter. CONSTITUTION:A rod 27 of an air cylinder 7 is pressurized in the extending direction, an interval between upper and lower straightening rollers 2, 4 is enlarged to set an electric wire 5 and further pressurized in the shrinking direction to clamp the electric wire between rollers 2, 4. When two dial type cam bodies 10, 11 are operated, an interval between the fixed supporter 1 and the movable supporter 3, that is, an interval between both facing straightening rollers 2, 4 can be adjusted selectively through a cam rod 8. Therefore, this device can correspond to many kinds of diameter of wires 5. When the bend is straightened, both straightening rollers 2, 4 are energized by an energizing means in a compressive direction.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire bend correction machine which is mainly used in the electric wire processing process and can easily handle various electric wires of different thicknesses.

0002

2. Description of the Related Art FIG. 5 is a schematic diagram showing an electric wire processing process described in Japanese Patent Publication No. 64-5405. That is, the electric wire 65 passes through a pair of electric wire bend correction machines N arranged in orthogonal directions, has its length measured by a measuring roller 66, and is sent to a cutting and automatic peeling machine (not shown) through a sending roller 67. It will be done.

As shown in an enlarged view in FIG. 6, the electric wire bend correction machine N has a plurality of small rollers 68 arranged side by side facing each other vertically or horizontally, and an electric wire 65 is inserted between them. Each of the left and right rollers 68 is biased in the compression direction by a spring member (not shown).

However, in the above structure, since the compressing spring force is constant, when the wire 65 is thin, it deforms into a wave shape, and when it is thick, the bend may not be completely straightened. Therefore, in the automatic stripping machine used in the subsequent process, there was a problem in that the insulation coating of the electric wire 65 could not be completely removed or the conductor portion was scraped off.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an electric wire bend correction machine that can reliably correct bends even if the wire diameter changes.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises: a fixed support having one correction roller; a movable support having another correction roller opposite to the correction roller; a means for biasing the fixed support and the movable support in a direction to bring them closer; a cam rod passing through the fixed support and the movable support; and a plurality of cam surfaces in contact with both ends of the cam rod; An electric wire bend correction machine is adopted, which is characterized by being constituted by two dial-type cam bodies pivotally connected to the fixed support and the movable support.

[0007]

[Operation] By operating the two dial-type cam bodies, the distance between the fixed support and the movable support, that is, the distance between the two opposing correction rollers, can be selectively adjusted via the cam rod. Therefore, it can accommodate electric wires of various diameters. During bend correction, both correction rollers are urged in the compression direction by the urging means.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing an embodiment M of a wire bend correction machine according to the present invention, and FIG. 2 is a sectional view of a main part taken along line AA in FIG. In the figure, 1 is a fixed support on which a plurality of lower correction rollers 2 are pivotally supported, 3 is a movable support on which an upper correction roller 4 is supported on a shaft opposite to the lower rollers 2, and 5 is a The electric wire is shown passing between both rollers 2 and 4 to correct its bending. The fixed support 1 and the movable support 3 have a pair of guide rods 6,
6 and are connected by an air cylinder 7.

Furthermore, a cam rod 8 is provided passing through the fixed support 1 and the movable support 3, and a dial type cam body for selecting the wire diameter is provided at the lower part of the fixed support 1 and has a plurality of cam surfaces 9. 10, dial-type cam bodies 11 for selecting electric wire types are rotatably mounted on the upper part of the movable support 3, and the cam surfaces 9, 12 of each cam body 10, 11
The end surfaces 8a and 8b of the cam rod 8 are brought into contact with each other.

Further, to explain the structure of the electric wire bend correction machine M in detail, the fixed support body 1 is formed of a metal material, and a rectangular lower cam is attached to the rear part of the lower wall 14 of the square columnar main body 13. A body pivot attachment portion 15 is provided in a protruding manner. The main body 1
A plurality of screw holes 17 are provided in parallel in the upper part of the front wall 16 of No. 3, and a bearing portion 19 of the lower correction roller 2 is fixed with a bolt 20 via a disc spring 18. Further, a pair of fixing holes 22 are provided in the upper wall 21 of the main body 13, and a pair of guide rods 6 are fixed to the fixing holes 22 with lock screws (not shown) or the like. A cam rod 8 is located near the front wall 16 between both fixing holes 22.
An insertion hole 23 is provided for the.

Furthermore, a commercially available air cylinder 7 having a square housing 25 is fixed to the rear wall 24 of the main body 13 with bolts (not shown). The air cylinder 7 can pressurize the piston rod 27 in both directions of expansion and contraction by switching a solenoid (not shown). A commercially available floating joint 30 is fastened to the threaded end portion 28 of the piston rod 27 via a locking nut 29.

The guide rod 6 and cam rod 8 are
It is preferable that the cam rod 8 is made of a metal material and has a cylindrical shape, and that the cam rod 8 and the cam bodies 10 and 11 are made of a material or surface treated that is hard to wear.

A pivot hole 32 is provided in the front wall 31 of the lower pivot portion 15, and a shaft portion 34 of the dial type cam body 10 for selecting the wire diameter is inserted into the pivot hole 32 via a bush 33. be inserted. The shaft portion 34 is provided with a circumferential groove 35, and the pivot portion 15 is provided with a circumferential groove 35.
A screw hole (not shown) is provided in the side wall 36 for a lock screw 37 that engages the tip 37a with the circumferential groove 35.

The dial type cam body 10 is made of a metal material, and includes a cylindrical dial portion 40 and a dial portion 4.
The cam part 41 includes a cam part 41 having a plurality of cam surfaces 9 integral with the cam part 4, and a shaft part 34 protruding from the center of the cam part 41. As shown in FIG. 3, a rear view of the cam body 10, the cam surface 9 gradually extends in the circumferential direction at a distance (notch height) h
In this example, six faces are set to correspond to six types of wire diameters (cross-sectional areas of 0.2 to 2.0 mm2 are displayed on the dial). As shown in FIG. 2, the lower end surface 8a of the cam rod 8, which has passed through the insertion hole 23 of the fixed support 1, comes into contact with the cam surface 9.

In FIGS. 1 and 2, 3 indicates a movable support. The movable support body 3 is formed of a metal material, and has a rectangular upper cam body pivoting portion 44 projecting from the rear part of the upper wall 43 of the main body 42 having a rectangular prism shape, and a rear wall 45 of the main body 42 having a rectangular shape. , a receiving plate part 48 is provided protrudingly for fixing the threaded end part 46 of the floating joint 30 fastened to the air cylinder 7 with a nut 47.

A plurality of upper correction rollers 4 are rotatably supported at the lower part of the front wall 49 of the main body 42 by bolts 51 via disc springs 50. In addition, a pair of through holes 5 are provided in the vertical direction.
2, and a bearing 53 for inserting the guide rod 6 into the through hole 52 is press-fitted therein. Furthermore, an insertion hole 54 for the cam rod 8 is provided near the front wall 49 between the pair of bearings 53.

The upper pivot portion 44 is fixed to the main body 42 with bolts 55, and a pivot hole 57 is provided in the front wall 56 in the same way as on the fixed support 1 side, and a bush 58 is provided in the pivot hole 57. A dial-type cam body 11 for selecting the electric wire type is rotatably mounted via the cam body. 63 is a lock screw whose tip portion engages with the circumferential groove 60 of the shaft portion 59.

The dial type cam body 11 has a dial portion 61 and a cam portion 6, similar to the cam body 10 for selecting the wire diameter.
2 and a shaft part 59, and as shown in the rear view of the cam body 11 in FIG. It has been formed. The letters AV displayed on the dial part 61 mean low-voltage electric wires for automobiles, and AVS is also a thin-walled type, and CAVS
means a compressed conductor thin-wall type, and US means a compressed conductor ultra-thin type low-voltage electric wire. The upper end surface 8b of the cam rod 8 is in contact with the cam surface 12.

After being assembled as shown in FIGS. 1 and 2, the rod 27 of the air cylinder 7 is pressurized in the stretching direction, the upper and lower correction rollers 2 and 4 are spaced apart, and the electric wire 5 is set, and the wire 5 is further shrunk. The electric wire 5 is sandwiched between the rollers 2 and 4 by applying pressure in the direction. Note that a biasing means such as a spring may be used instead of the air cylinder 7. Here, the distance s between the rollers 2 and 4 is determined by the fact that the cam rod 8 abuts and supports the cam surfaces 9 and 12 of the two cam bodies 10 and 11 which are pivotally connected to the fixed support 1 and the movable support 3. It is determined. This distance s can be adjusted by selectively rotating both cam bodies 10 and 11.

According to this embodiment, twenty-four combinations are possible with the six cam surfaces 9 for selecting the wire diameter and the four cam surfaces 12 for selecting the wire type. Note that the height h and the number of notches on the cam surfaces of the cam bodies 10 and 11 can be set as appropriate, and thereby the number of combinations can be increased or decreased.

[0021]

[Effects of the Invention] As described above, according to the present invention, the interval between the correction rollers can be easily and finely adjusted by operating the two dial-type cam bodies, so that it is possible to adapt to electric wires of various diameters. This allows the bend to be reliably corrected.

[Brief explanation of drawings]

FIG. 1 is a front view showing a wire bend correction machine according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG. 1;

FIG. 3 is a rear view showing a dial-type cam body for selecting an electric wire diameter.

FIG. 4 is a rear view showing a dial-type cam body for selecting the type of electric wire.

FIG. 5 is a schematic diagram showing a conventional electric wire processing process.

FIG. 6 is a front view showing a conventional electric wire bend correction machine.

[Explanation of symbols]

1 Fixed support 2, 4 Correction roller 3 Movable support 7 Air cylinder 8 Cam rod 9,12 Cam surface 10, 11 Dial type cam body 27 Piston rod

Claims (1)

[Claims] 1. A fixed support body having one correction roller, a movable support body having another correction roller facing the correction roller, and a fixed support body and the movable support body attached in a direction to bring the fixed support body and the movable support body close to each other. a cam rod passing through the fixed support and the movable support; and a plurality of cam surfaces contacting both ends of the cam rod; A wire bending correction machine characterized by comprising a dial type cam body.