JPH1025680A - Apparatus for applying wavy form to steel wire for reinforcement of rubber article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus having a simple structure and capable of easily and efficiently applying two-dimensional small. permanent waves having gentle curvature on apices to a steel wire. SOLUTION: Gears 4a, 4b having mutually intermeshing tooth parts are fixed to a pair of supporting shafts rotatably supported on a frame 1. Disks 6a, 6b are fixed coaxially to the shafts of the gears 4a, 4b. A number of wave- forming pins 8a, 8b protruding in the direction perpendicular to the rotational direction are attached to the circumference parts of the disks 6a, 6b at prescribed intervals in such a manner as to stagger the phases of the pins to alternately position the pins of the disks at the closest position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an apparatus for corrugating steel wires for reinforcing rubber products.

[0002]

2. Description of the Related Art In steel cords for reinforcing rubber products, in addition to strength and durability, it is important that rubber penetrates well into the outer surface and the inside of the cord and has good corrosion propagation resistance. As a countermeasure against this, Japanese Patent Laid-Open No. 5-186988
In two or more steel wires that compose a steel cord, continuous two-dimensional shorter than the cord twisting pitch length and smaller in height (amplitude) than the wave height due to cord twisting in one or more steel wires that compose the steel cord There has been proposed a steel cord which is preliminarily subjected to a small wave hammer and twisted using such a steel wave hammered steel wire. According to such a steel cord, since a gap is formed between the steel wires by the rippled steel wire, the rubber permeability is improved, and in a steel cord using such a steel wire as a core, the rippled wave is two-dimensional. Therefore, there is an advantage that the cord itself can be formed in a flat shape. Conventionally, however, a pair of gears with teeth formed on the outer peripheral surface is used as a means for applying such a two-dimensional wavelet habit, and a zigzag wave is formed by passing a steel wire between the pair of gears. I was trying to do it.

[0003]

However, in such a structure, the steel wire is a so-called die working, in which the steel wire is progressively pushed into the meshing gap between the teeth by the rotation of the gear and is plastically worked. Since the tooth surfaces of the tooth portions are in contact with each other and transmit rotational torque, the steel filament is pinched between the tooth surfaces, whereby the wire is easily biased or scratched, In addition, a triangular wave having a sharp top portion is likely to be formed as a whole. For this reason, when a cord is manufactured by twisting a steel wire with a small wave hammer with a buncher type twisting machine or the like, stress is concentrated on the side portions and apex portion of the wave, and a disconnection occurs or a cutting load is generated. And the fatigue resistance deteriorates.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a two-dimensional wavelet having a simple structure and a gentle curvature at the apex. It is an object of the present invention to provide a device which can easily and efficiently process the material.

[0005]

In order to achieve the above object, a first aspect of the present invention is to fix a gear having tooth portions meshing with a pair of support shafts rotatably supported on a frame via bearings. At the same time, the disks are fixed coaxially with the respective gears, and a large number of corrugating pins projecting in a direction perpendicular to the rotation direction are attached at predetermined intervals to the periphery of the set of disks. The phases are shifted so that the corrugating pins are alternately arranged at the time of closest approach. The corrugating pin may be made of a material having excellent wear resistance, such as a cemented carbide, or may have a soft outer layer having good wear resistance. According to the latter, since the steel wire is easily bent by the soft outer layer, the curvature at the top of the wave can be increased to make the wave close to a sine wave.
In each case, the corrugating pins are fixed to a disk or are rotatable. Preferably, the set of disks is arranged so that the surface with the corrugating pins faces inward and the corrugating pins mesh on the circumference. According to this configuration, a wall is formed on the path at the periphery of the set of disks on which the corrugating pins are arranged, and the steel wire is sandwiched between the corrugated pins. Departure from the route can be prevented. In addition,
In the present invention, the “steel wire” is also called a steel filament, and generally has a diameter of 0.15 to 0.5 mm.
It refers to a high-carbon steel wire having a surface of 50 mm and having a plating with good adhesion to rubber on the surface.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show a basic embodiment of an apparatus for corrugating steel wires for reinforcing rubber products according to the present invention. 1 is a fixing part 10 for the base 9
Bearings 2a and 2b are fixed to the frame 1 at predetermined intervals in the height direction,
The bearings 2a and 2b hold the rear half portions of the support shafts 3a and 3b that protrude forward through the frame 1 and are rotatable. Reference numerals 4a and 4b denote a pair of gears fixed to the support shafts 3a and 3b by a key or the like at a position close to the frame 1, and the teeth 40a and 40b formed on the outer periphery are meshed with each other.

Reference numerals 6a and 6b denote a pair of disks having an outer diameter larger than that of the gear, and one disk (the upper one in this example) 6a is brought into contact with the outer surface of the gear 4a with a short boss 60, At the center, the support shaft 3a projects through the boss 60, while the disk 6a is fixed to the gear 4a by a plurality of fixing bolts 7, 7 penetrating the boss 60. On the circumference near the periphery of the disk 6a, a number of corrugating pins 8a projecting forward are arranged. In this example, 16 corrugating pins 8a are mounted on the circumference.

The other disk 6b (the lower one in this example)
Has a bottomed cylindrical portion 61 at the rear to provide a space so as not to contact the tip of the corrugating pin 8a. The bottomed cylindrical portion 61 abuts on the gear 4b, and the bottomed cylindrical portion 61 It is fixed to the gear 4b by a plurality of fixing bolts 7 that penetrate. The support shaft 3b protrudes from the center of the bottomed cylindrical portion 61. A large number of corrugating pins 8b projecting rearward on the circumference near the periphery of the disk 6b.
Is arranged. The pair of disks 6a, 6b therefore face each other with the surfaces to which the corrugating pins 8a, 8b are attached being out of phase in the vertical direction. In this example, there are 16 corrugating pins 8b, and as shown in FIG. 2, the pitch circle Cb of the corrugating pins 8b crosses the pitch circle Ca of the corrugating pins 8a of one disk 6a. ing. The arrangement interval of the corrugating pins 8b is the same as that of the corrugating pins 8a, but the phase of the corrugating pins 8a is shifted by a half pitch.
At least three corrugating pins 8b, 8 at the closest position
a and 8b are alternately arranged at equal intervals. This takes into consideration the distance L between pins and the number of pins, the size of the disk, and the number of teeth of the gear when manufacturing the disk, and also fixes the disk 6b by shifting its position in the circumferential direction with respect to the one disk 6a when fixing the disk 6b to the gear 4b. Is set by

In FIG. 2, the frame 1 is provided with brackets 11 and 11 'on both sides in the width direction, and the bracket 11 corresponds to substantially the center line of three corrugating pins 8b, 8a and 8b. A guide tube 110 for introducing the steel wire w is fixed to the portion, and a guide tube 110 'for leading out the steel wire w' that has been rippled is fixed to the other bracket 11 '.

FIG. 4 shows another embodiment of the present invention. In this example, 28 corrugating pins 8a and 8b are arranged on each of the disks 6a and 6b. When the diameters of the disks 6a and 6b are the same as in the above example, the corrugated pins 8
The pitch of the ripples can be shortened by increasing the number of a and 8b to shorten the pin interval L.

The corrugating pins 8a and 8b are made of a material having a smooth surface and good wear resistance, such as a cemented carbide, so as not to damage the steel wire w. And
In order to increase the radius of curvature at the top of the rippled wave, the corrugating pins 8a and 8b preferably have a diameter of at least three times, more preferably at least four times the diameter of the steel wire w. The cross-sectional shape of the corrugating pins 8a, 8b at right angles to the longitudinal direction is not limited to a true circle, but may be an ellipse, an ellipse, a tapered shape, or the like.

FIG. 5 shows an example of mounting the corrugating pins 8a and 8b. FIG. 5 (a) shows the base portions of the corrugating pins 8a and 8b fixed to the disks 6a and 6b. Although this fixing is screwed in the illustration, it may be press-fitted or the like. (B) is provided with bearings 62, 62 on the disks 6a, 6b,
By inserting the base portions of the corrugating pins 8a and 8b into the corrugated pins 8a and 8b, the corrugating pins 8a and 8b can be rotated. FIG. 6 shows another example of the corrugated pins 8a and 8b. As a means for increasing the radius of curvature of the top of the rippled wave, a pin body 800 is used.
Is provided with a soft outer layer 801 made of a material having good abrasion resistance, for example, engineering plastic. The outer layer 801 may be integrated with the pin body 800 by bonding or the like, or may be freely rotatable. The structure shown in FIG.
The outer layer 801 may be made of a material having a smooth surface and good wear resistance, for example, a cemented carbide sleeve.

Although the device of the present invention is basically based on the pulling of the steel wire w as a power source, it may be driven in some cases, and this is also included in the present invention. In this case, one of the support shafts 3a or 3b may be protruded from the bearing and directly connected to the actuator with a reduction gear, or may be connected to the actuator via a transmission element such as a gear or a pulley.

FIG. 8 shows an example of use of an apparatus for corrugating steel wires for reinforcing rubber products according to the present invention. This use case, have a single-core wires w ₁ and the side wire w ₂ 6-8 pieces of the surrounding having a substantially two-dimensional continuous wavelet habit, as shown in FIG. 9 (a) (b) An apparatus for manufacturing a steel cord having an elliptical cross section having a cord cross section having substantially the same direction with a double twist twisting machine is shown. 5
Reference numeral 0 denotes a double-twist twisting machine main body in which a second flattening device 550 and an over-twisting machine 540 are arranged upstream of the take-up reel 590, and the double twisting twisting machine main body is provisionally upstream from the introduction side of the double-twist twisting machine main body 50. The twisting machine 140, the voice 130, and the wiring board 120 are sequentially arranged.

[0015] Then, corrugating processing apparatus A is disposed according to the present invention on the pass line of the core wire w ₁ from the supply bobbin 60a that MakiOsamu the wiring board 120. The twice-twisting wire machine main body 50 has a cradle 510 swingably supported by bearings on left and right hollow shafts 520, 520 'rotated by the prime mover 500, and a rotation guide (coaxially with the cradle 510). Bows) 530, 530 'are attached, and rotation guides 530,
530 'is provided with a first turn roll 570 and a second turn roll 580 which can rotate integrally therewith.
The cradle 510 is provided with an over-twisting machine 540 for correcting the rotation of the cord downstream of the second turn roll 580, and a flattening device 550 and a take-up capstan 560 are provided downstream of the over-twisting machine 540. A take-up reel 590 is provided further downstream. Collection capstan 5
Numeral 60 designates a front and rear pair, and the cord is wound several times.

60b to 60g are 6 to 8 side wires w ₂
These are supply bobbins each of which is wound up, and are arranged at a position separated from the double-twisting machine main body 50.
Although not shown in the supply bobbins 60a~60g are supplied with braking device, as the side wires w ₂ of the core wire w ₁ and 6-8 present by the braking device drawn while being imparted a predetermined tension It has become. 100 is a tension equalizing device for a core wire, for example, a capstan 100a with a powder brake and a drive capstan 1a.
00b. A position control sensor 100c controls the drive capstan 100b based on a displacement signal from the sensor to suppress fluctuations in the tension of the core wire 1. In this example, a lever-type dancer arm is used as a position control sensor. Reference numeral 100 'denotes a tension equalizing device for the side wire disposed on the wire path line downstream of the supply bobbins 60b to 60g, and similarly to the core wire, a capstan 100a' with a powder brake and a driving capstan 100b. The driving of the driving capstan 100b ′ is controlled by the position control sensor 100c ′. Tension equalizing device 100 'may be provided for each side wires w _2, but for simplification, at least with a brake capstan 100a' drive capstan 100
It is preferable that b ′ or the tension sensor 100c ′ be configured to be long in the axial direction so that the wires for each side are passed in parallel (shared).

[0017] 109 is a shaping device provided on the downstream side of the tension equalization device 100 'is provided on each of the pass line of the side wires w _2. In FIG. 8, 1
Only one is shown and the others are omitted. In the shaping device 109, a plurality of pins, for example, 3 to 5 pins are arranged in a staggered or linear manner at a predetermined interval on a plate-shaped, conical-shaped or cylindrical-shaped base. Each pin may be fixed to the base, or may be rotatable with respect to its own axis by attaching a bearing.

The wiring board 120 is a tension equalizing device 100, 1
Provided downstream of 00 ', it is provided a hole through which the core wire w ₁ and the side wires w _2, respectively. Voice 130 is intended for assembling the core wire w ₁ and the side wire w ₂ that is wired with the wiring board 120. The false twisting machine 140 is for twisting the wire bundle and includes a pair of false twist rollers 140a and 140b for winding the wire bundle. The false twisting machine 140 is rotated in the same direction as the rotation guides 530 and 530 'on the wire bundle axis. It has become. The flattening device 550 is for compressing the entire cord to adjust the flattened state. A plurality of flattening devices 550 are rotatable with respect to their own axes at predetermined intervals on a plate-shaped or block-shaped base (for example, (About 5 to 10 rolls) are arranged alternately, and each roll can be pushed and adjusted in the direction of the wire path line by approaching or retracting the base or moving the roll shaft itself. The flattening device 550 needs to function in a state where the cord is under tension. Therefore, in this example, the flattening device 550 is disposed on the cord moving path between a pair of rolls constituting the take-up capstan 560. I have.

FIG. 10 shows another example of use of the apparatus of the present invention. In this use example, one core wire W ₁ is used as shown in FIG.
One or two with two-dimensional continuous ripples around
The side wires w ₂ , w ₂ of the book are spirally wound, and the core wire w
This is a stranded wire apparatus for producing a steel cord having a structure in which a gap s is formed between ₁ and the side wires w ₂ , w ₂ or between two side wires w ₂ , w ₂ . In the stranded wire device, guide rolls 570, 580, 571, and 581 are provided on the center axis of rotation of the stranded wire device main body 50 ', and the inside of the guide roll is fixed regardless of the rotation of the guide roll. Two side wire supply bobbins 60b, 60c that maintain the position are arranged. Then, the wire supply bobbins 60b and 60c and the guide roll 570
The devices A, A of the present invention are provided on a pass line therebetween. Although the voice 130 is used in this embodiment, this is not particularly necessary. In this example, the device A of the present invention is used.
Is provided in the path of each side wire supply bobbin 60b, 60c. However, if only one side wire is to be corrugated, the apparatus A of the present invention may be provided as one. Outside the stranded wire device main body 50 ', one core wire supply bobbin 60 is provided.
a is provided. The device of the present invention is not limited to the above two use examples, but is applicable to any case where a cord is manufactured using one or more steel wires each having a steel wire with a rippled wave.

[0020]

The operation and operation of the apparatus according to the present invention will be described. The apparatus of the present invention is provided on a desired pass line downstream of the supply bobbin of the steel wire w. The steel wire w is introduced from the guide cylinder 110 of the frame 1 and the pitch circle outer diameter of the corrugating pins 8b, 8a, 8b. After passing through the side, it is led out from the guide cylinder 110 '. When the steel wire w is pulled downstream in this state, a rotational torque is generated on the disks 6a, 6b due to friction between the corrugating pins 8b, 8a, 8b and the steel wire w, and the rotational torque is generated by the disks 6a, 6b. Since the gears 4a, 4b are directly transmitted to the pair of gears 4a, 4b,
The disks 6a, 6b forming a pair rotate smoothly at equal speeds in opposite directions to each other by the meshing rotation of the tooth portions 40a, 40b of b.

Due to this rotation, the corrugating pins 8 arranged on the pitch circles Ca, Cb at the peripheral edges of the disks 6a, 6b.
a and 8b are also moved, and two corrugated pins 8 are located above the pass line at the closest rotation angle position as shown in FIG.
The b and 8b are arranged at intervals, and one corrugating pin 8a is located below the pass line at the midpoint, and gradually separates as the rotation angle advances. As a result, the steel wire w is pushed in while being supported at three points by the three corrugating pins 8b, 8a, 8b, so that the steel wire w is bent and deformed as shown in FIG. This is maintained by the rotation of the disks 6a and 6b and the movement of the steel wire w, so that a two-dimensional wavelet continuous in the longitudinal direction is formed.

The bending deformation at this time is a three-point support type free bending unlike a so-called die working in which a wire is filled in a cavity between convex and concave tooth surfaces and compressed, as in the case of a gear. Therefore, there is no flaw in the middle part of the wave of the steel wire w and no pressure bias. Further, since the diameter of the corrugating pins 8a and 8b is at least three to four times or more the diameter of the steel wire w, the apex portion of the corrugation is not acute, but as shown in FIG. It can be.

It is possible to easily cope with a case where it is desired to change the pitch length p and the height h of the ripples applied to the steel wire w. That is, if the fixing bolts 7, 7 are removed, the disks 6a, 6b are separated from the gears 4a, 4b, so that the disks 6a, 6b having the disk diameter and the corrugated pin interval corresponding to the specification to be manufactured are geared. It is only necessary to screw the fixing bolts 7, 7 onto the 4a, 4b and adjust the pushing amount (engagement degree) of the set of disks 6a, 6b.

When a steel cord is manufactured in the example of use in FIG. 8, the motor is driven to rotate the twisting machine main body 50, for example, counterclockwise as shown in FIG.
0 is rotated counterclockwise about the wire bundle pass line as an axis, and the overtwisting machine 540 is rotated in the opposite direction to the twisting machine body, that is, clockwise in this example. This way, the supply of the core wire w ₁ drawn from the bobbin 60a disc 6a as described above, 6b ripples habit pin 8b,
8a and 8b, two-dimensional wavy waves are continuously applied, and in this state, the downstream tension equalizer 100
Thus, it is inserted into the central through-hole of the wiring board 120 while suppressing the fluctuation of the tension. On the other hand, at the same time 6-8 pieces of side wires w ₂ is 'capstan 100a' of anything tension equalizing device 100 remains which is not given the habit waves respectively, 100
b 'is wound around and pulled out, and the control sensor 100
After passing through c ′, each is guided to the molding device 109.
Although they shaping device 109 is fixed, each side wires w ₂ is squeezed by a plurality of pins, since the cause twisted by the false twist the same time, the habit of substantially conforming with helically twisted code Attached. Each side wires w ₂ which is shaping thus toward the wiring board 120, is inserted into the hole which is arranged on the outer periphery of the center hole.

As a result, 6 to 8 hammered side wires are gathered around the continuous wave wavy cored wire, and subsequently guided to the voice 130 to be assembled into a bundle. And in that state, it reaches the false twisting machine 140. Since this false twisting machine 140 revolves around the pass line in the same direction as the twisting machine main body 50, the wire bundle is forcibly twisted, the shaping is strengthened, and the continuous wavelet core is attached. The balance between the twist length of the wire and the twisted side wire is optimized.

Thereafter, the wire bundle is guided into the twisting machine main body 50 through the hollow shaft 520 ', and the first turn roll 5
70 to the rotation guide 530 and the second turn roll 580
Are passed through and twisted twice. The coarse cord twisted in this manner is subsequently led to an over-twisting machine 540, which is revolved in the direction opposite to the rotation direction of the twisting machine main body 50. The torsion is forcibly applied, thereby correcting the rotation. The coarse cord that has passed through the over-twisting machine 540 is wound a plurality of times around a pair of rolls constituting the take-up capstan 560 and is tensioned by a flattening device 550 in a state where tension is applied.
Pass through. Since the flattening device 550 is fixed and a plurality of pairs of rolls arranged alternately protrude by a required amount in the pass line direction, the coarse cord is pressed from the 180-degree symmetrical direction. As a result, the flat shape is adjusted, the cross-sectional shape is not distorted due to the stranded wire process, and the product code is formed into a product code in which the flat surface is aligned in a certain direction, and is wound on the take-up reel 590. Thus, a steel cord having a structure as shown in FIG. 9 is obtained.

In the embodiment shown in FIG. 10, in manufacturing the cord, the core wire w is supplied from the core wire supply bobbin 60a.
₁ is pulled out, and this core wire w ₁ is
→ The guide roll 580 → the guide roll 571 → → passes through the guide roll 581 and is wound on the winding bobbin 590. In this example, the side wire bobbins 60b, 60c
, The winding side wires w ₂ , w ₂ are pulled out, and these wires w ₂ , w ₂ pass through the devices A, A → guide roll 571 → guide roll 581 of the present invention, and are wound on the winding bobbin 590. .

In the above process, the core wire bobbin 60a
The core wire w ₁ pulled out of the wire is twisted by passing through the guide roll 570 and the guide roll 580,
On the other hand, the wires w ₂ , w ₂ pulled out from the side wire supply bobbins 60b, 60c are continuously waved by the devices A, A of the present invention, and in that state, the wires w ₂ , w ₂ are placed on _one core wire w ₁ . Will be referred to. Two side wires w ₂ , w ₂
It is wrapped around the core wire w ₁ as it passes through the guide rolls 571,581, as shown in FIG. 11 1 + 2
Wound on bobbin 590 as a structural steel cord.

[0029]

According to the first aspect of the present invention described above, the tooth portion 4 meshes with the pair of support shafts 3a, 3b rotatably supported on the frame 1 via the bearings 2a, 2b.
The gears 4a and 4b having the wheels 0a and 40b are fixed, and the disks 6a and 6b are fixed coaxially with the gears 4a and 4b, respectively. A large number of corrugating pins 8a and 8b projecting in the orthogonal direction are attached, and the corrugating pins 8a and 8b are attached.
Since the phases are shifted so that a and 8b are alternately arranged at the time of closest approach, it is possible to efficiently form a two-dimensional wavelet on the steel wire with a simple structure. In addition, since the resulting steel wire has smooth waves with no scratches and a curvature at the apex, stress is not concentrated on the apex during the twisting process, and there is little disconnection and good fatigue resistance steel. An excellent effect of being able to code is obtained. Also, since only the corrugating pins 8a and 8b may be made of a material having good wear resistance, the manufacturing cost can be reduced, and even when the pitch or height of the rippled wave is changed, the pin spacing and dimensions are adjusted. Instead of a set of disks,
An excellent effect is obtained that it is simple because it is sufficient to adjust the pushing amount.

According to the second aspect, the corrugating pins 8a, 8
Since the diameter of b is three times or more the diameter of the steel wire, an excellent effect is obtained in that a radius portion having an appropriate curvature can be formed at the apex of the small wave habit. According to the third aspect, since one set of disks is arranged so that the surface on which the corrugating pins 8a and 8b are attached faces inward, corrugating is performed while preventing the steel wire from separating from the path. Can be obtained. According to the fourth aspect, since the corrugating pins 8a and 8b can rotate, an excellent effect that uniform wear can be achieved and the pushing of the steel wire can be performed smoothly without difficulty can be obtained. . According to claim 5, the corrugating pin 8
Since a and 8b have a soft outer layer having good abrasion resistance, the steel wire can be bent without difficulty by the soft outer layer. Therefore, the curvature at the top of the wave is increased to form a wave shape close to a sine wave. The excellent effect that can be obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of an apparatus for corrugating steel wires for reinforcing rubber products according to the present invention.

FIG. 2 is a partially cutaway enlarged front view of FIG. 1;

FIG. 3 is a partially cutaway sectional view taken along line III-III in FIG. 2;

FIG. 4 is a partial front view showing another example of the device of the present invention.

5A and 5B are cross-sectional views showing a mounting state of a corrugating pin in the apparatus of the present invention, wherein FIG. 5A is a fixed type and FIG.

6A and 6B show another embodiment of a corrugating pin in the device of the present invention, wherein FIG. 6A is a longitudinal sectional side view, and FIG. 6B is a longitudinal sectional front view.

FIG. 7 is an enlarged side view showing a processing state by the apparatus of the present invention and an obtained ripple wave habit.

FIG. 8 is a schematic view of a stranded wire device showing an example of use of the device of the present invention.

9A and 9B are cross-sectional views showing examples of a steel cord manufactured by the apparatus shown in FIG.

FIG. 10 is a schematic view of a stranded wire device showing another example of use of the device of the present invention.

11 is an enlarged perspective view showing an example of an ethyl cord manufactured by the apparatus shown in FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2a, 2b Bearing 3a, 3b Support shaft 4a, 4b Gear 6a, 6b Disk 8a, 8b Corrugation pin w Steel wire 40a, 40b Tooth 801 Outer layer

Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location D07B 1/06 D07B 1/06 Z

Claims (5)

[Claims] 1. Gears 4a and 4b having teeth 40a and 40b meshing with a pair of support shafts 3a and 3b rotatably supported on a frame 1 via bearings 2a and 2b are fixed. Discs 6a and 6 are coaxial with 4a and 4b.
b, and a number of corrugating pins 8a, 8b projecting in a direction perpendicular to the rotation direction are attached at predetermined intervals to the periphery of the set of disks 6a, 6b.
An apparatus for corrugating steel wires for reinforcing rubber products, wherein the phases are shifted so that the corrugating pins 8a, 8b of the set of disks 6a, 6b are alternately arranged at the time of closest approach. 2. The apparatus for corrugating steel wires for reinforcing rubber products according to claim 1, wherein the diameter of the corrugating pins 8a and 8b is at least three times the diameter of the steel wire. 3. A pair of disks 6a and 6b are provided with corrugated pins 8.
3. The corrugated steel wire for reinforcing rubber products according to claim 1, wherein the corrugated pins 8a and 8b are arranged so that the surfaces provided with a and 8b face inward and mesh with each other on the circumference. Mounting equipment. 4. The corrugated pins 8a, 8b are discs 6a, 6b.
4. A corrugating apparatus for a steel wire for reinforcing rubber products according to claim 1, which is rotatably mounted on the steel wire. 5. The corrugated steel wire for reinforcing rubber products according to claim 1, wherein said corrugated pins 8a and 8b include those having a soft outer layer 801 having good wear resistance. Mounting equipment.