KR200227365Y1 - Apparatus for rectifying outer supplying wire of steel cord twister - Google Patents

Abstract

The present invention relates to an improvement in the external wire supply structure of a stranded wire for steel cord manufacture used as a reinforcement for rubber products such as tires or conveyor belts of automobiles.

The external supply line adjusting device of the steel cord stranded machine of the present invention is driven to rotate by an external element wire 6a and a main motor 5 supplied from an external element wire supply bobbin 1a, 1b attached to the external supply table 1. The internal wires 6b supplied from the internal wire supply bobbins 3a and 3b seated on the rotary wheel 4a of the internal supply table 4 are twisted together to form a steel cord 6. In a conventional twisted pair structured device, a one-turn roller 26 is provided on an external element wire movement path between the external supply base 2 and the internal supply base 4 so that the external element wire 6a winds around the outer circumferential surface of the one-turn roller. In this case, the one-turn roller 26 is a point corresponding to the length of the internal element wire 6a to be twisted and twisted, and the inner guide roller 13c and the inner supply of the outer feeder 2 are internally supplied. Outer wire transfer path between guide rollers 13d installed on the vertical lower part of the stand 4 It is installed.

In the twisted pair with an external supply line adjusting device of the present invention, the linearity of the external wire is drawn out from the external feeder and the straightness is adjusted while the twisting length of the external wire is the twisting length of the internal wire. Since it is combined with each other in the same twisted state under the same twisting, the adjustment is made while the defective part or section of the external wire passes through the one-turn roller, eliminating the need to inspect the wire quality by unscrewing the external wire supply bobbin beforehand. There is an advantage that can reduce the manpower and time.

Description

Apparatus for rectifying outer supplying wire of steel cord twister}

The present invention relates to a twisted pair for steel cord manufacturing used as a reinforcement material for rubber products such as tires or conveyor belts of automobiles, and more specifically, a one-ton roller (1) on an outer feed wire transfer path between an outer feeder and an inner feeder of the twister. By installing a one-turn roller, the external supply line winds around the one-turn roller to improve the linearity of the external wire and adjust the torsional resistance, thereby reducing the occurrence of disconnection of the external supply wire, and the steel manufactured through the twisted pair. The present invention relates to an external supply line adjusting device for a steel cord twisted pair, in which a cord quality characteristic is improved.

In general, among the various types of reinforcing materials used for reinforcing rubber products such as tires and conveyor belts, steel cords are superior to other rubber reinforcing materials in terms of strength, modulus, heat resistance, and fatigue resistance. It is known to exhibit excellent properties, and this is a great contributor to improved wear resistance, durability and steering stability, especially when used in carcass or belt layers as tire reinforcements.

These steel cords are made of carbon steel and have a twisted structure in which a plurality of metal wires with a brass plating layer coated on the surface maintain a constant twist pitch and twist direction to improve adhesion, corrosion resistance and freshness with rubber. have.

On the other hand, the steel cord has a variety of structures depending on the number of strands of the strands constituting the strand and the number of layers of the strands constituting the twist, etc. Among the steel cords of the stranded wire used in the production of steel cords of 2 + 2 x 0.25mm Looking at the structure and twisted pair process as shown in FIG.

First, Figure 1 is a schematic structural diagram of a conventional steel cord twisted pair, as shown in the conventional steel cord twisted pair, the external supply table (2) on which the external wire supply bobbin (1a) (1b) is mounted, and the internal wire supply bobbin (3a) and (3b) an internal feeder (4) equipped with a rotary wheel (4a) that rotates in a seated state, a main motor (5) to impart rotational driving force to the internal feeder (4), and The external element wire supply bobbin 3a of the internal supply line 4 and the external element wire 6a which are released from the external element supply supply bobbins 1a and 1b of the external supply unit 2 and moved to the internal supply unit 4. An over twister 8 for providing a torsion to the twisted wire roller 7 in which the internal element wires 6b drawn out from 3b are combined and twisted together, and the steel cord 6 exiting the twisted wire roller 7. ) And a series of roller groups that provide straightness to the steel cord 6 that has passed through the over twist 8 and maintain a constant stranded pitch. It is sent to the calibrator 9 and the steel cord 6 are coiler 10 exiting the straightener 9 made of a consist in the pull-out capstan 12 for winding on to the take-up spool (11).

At this time, the external element wires 6a released from the external element wire supply bobbins 1a and 1b of the external supply unit 2 are sequentially guided by the guide rollers 13a to 13e, and thus the internal supply unit 4 Internal element wire supply bobbin in the process of being moved toward the center of the rotary wheel 4a through the guide roller 13f installed in the upper center of the inner feeder 4 again via the rotary wheel 4a after being transported to the lower center. It is associated with the internal wire 6b drawn out from (3a) and (3b).

In this way, the two strands of the outer wire 6a and the inner wire 6b are connected to each other by the stranded roller 7 provided at the upper center portion of the inner feeder 4 via the guide roller 13g below the rotary wheel 4a. In the process of conveying) the twist is made in a certain twist direction and twist pitch.

Such twisting of the external element wire 6a and the internal element wire 6b is transmitted to the rotary shaft 15 of the internal feed table 4 through the power transmission belt 14 which is the rotation driving force from the main motor 5 to supply the internal supply. Rotation of the base 4 is made, and the inner and outer element wires 6a and 6b are fed together in an internal supply object during the rotation of the inner feeder 4.

On the other hand, the steel cord 6 conveyed through the stranded roller 7 passes through the two guide rollers 16a and 16b, and the overtwist 8 and the straightener 9 driven by the overtwisted drive motor 17. ) Are sequentially directed toward the withdrawal capstan 12.

At this time, the withdrawal capstan 12 is one end is transmitted through the power transmission belt 18, the reducer 19 and another power transmission belt 20 coupled to the rotary shaft 15 of the internal feed table (4). The steel cord 6 is transported by the rotational driving force of the motor 5.

Next, the steel cord 6 exiting the take-out capstan 12 is finally wound on the winding spool 11 which is rotated by the take-up motor 21 of the take-up machine 10, at which time the take-out capstan 12 On the steel cord feed path between the coil and the winding spool 11, a counter pulley 22 equipped with a sensor for detecting the current length of the steel cord being stranded and a tension adjusting roller 23 for adjusting the tension of the steel cord; The twisted pair work is completed by uniformly winding the winding spool 11 through the traverse 24 reciprocating by the width of the winding spool 11.

In the figure, reference numeral 25 denotes a traverse motor.

However, in the conventional twisted pair, the external strand 6a is longer relative to the internal strand 6b than the internal strand 6b, and thus associated with the external strand 6a and the internal strand 6b. Previously, the size of the twists (torsion) received by wires had to be significantly different from each other, so that the disconnection rate of the external wires was much higher than that of the internal wires (actually 30 to 40% higher), and the wires were mutually different. There is a problem that the possibility of wave defect in steel cord after being twisted to form a stranded wire is high.

The wave defect of the steel cord cannot be found during the twisting of the steel cord, and it is revealed as a rain at the inspection of the steel cord wound on the winding spool after the stranding work is completed, and the steel cord wound on the winding spool of the winding state in which the wave defect is found. Will be totally unusable, causing serious losses.

In addition, the steel cord wound on the wire supply bobbin does not show uniform straightness over the entire length due to various defects in the drawing process, which is the previous process, but the linearity is partially changed and sometimes there is an overlapping line. Internal quality may change.

When using bobbins wound with steel cords with altered internal quality of wires as external wire supply bobbins, there is a high possibility that external wires released into the bobbins will be disconnected during stranding. Because of the high risk of falling, the conventional twisted pair work method, in particular, the steel cord for the external wire wire is used only for the steel cord having a complete quality state by unwinding and inspecting before mounting on the external supply.

Accordingly, in the conventional steel cord twisted pair machine, a lot of time and effort is required for the inspection of external wires, and as a result, productivity is lowered.

The present invention has the above-mentioned problems caused by the relatively long moving distance of the external wires in the conventional steel cord twisted pair that allows the external wires and the internal wires fed from the external supply and the internal supply to be twisted together. In order to solve the problem, the one-turn roller is installed on the external wire transfer path between the external feeder and the internal feeder of the stranded wire to improve the linearity of the wire in the process of the external wire wound around the one-turn roller. By adjusting the torsional resistance and torsion resistance, the occurrence of disconnection of external wires is reduced, while the steel cord manufactured through the twisted pair shows uniform torsion value over the entire length, and the quality characteristics such as straightness, wave and fatigue value are improved. The purpose of the present invention is to provide an external supply line adjusting device for a steel cord twisted pair. And there.

1 is a schematic structural diagram of a conventional steel cord twisted pair.

Figure 2 is a schematic structural diagram of a steel cord twisted pair provided with an external supply line adjusting device of the present invention.

Figure 3 is a longitudinal sectional view of the external supply line adjustment device of the present invention.

((Description of the code for the main part of the drawing))

1a, 1b. External wire supply bobbin

3a, 3b. Internal Wire Supply Bobbin 4. Internal Supply Base

5. Main motor 6a. External wire

6b. Internal wire 6. Steel cord

7. Stranded wire roller 8. Over twisted

9. Straightener 10. Winder

11. Winding bobbin 12. Withdrawal capstan

26. Oneton Roller

The object of the present invention is to provide a steel cord by twisting the external wire supplied from the external wire supply bobbin mounted on the external supply table and the internal wire supplied from the internal wire supply bobbin seated on the internal supply object rotated and driven. In a typical stranded twister configured to form, a one-turn roller is installed on an external elementary wire moving path between the external supply and the internal supply unit so that the external elementary wire winds around the outer circumferential surface of the one-turn roller.

At this time, the installation position of the one-turn roller is selected as the point corresponding to the length of the internal wire is twisted and twisted on the basis of the joint point of the external wire movement path before the external wire and the internal wire are fed together, the specific position Is suitable for the position close to the internal feeder main body in the external elementary moving path between the lower guide roller of the external feeder and the guide roller installed directly under the internal feeder.

In this way, the one-turn roller installed on the external wire movement path allows the straightness to be improved about the external wire passing through the circumferential surface, and the equalization of the twist torsion level between the internal and external wires through the proper twist length of the external wire. By minimizing the occurrence of disconnection of external wires in stranded wire, reducing the change of torsion value over the entire length and improving the quality characteristics (straightness, fatigue and wave characteristics) of steel cord. There is a characteristic.

Details of the above object and technical configuration and the effects of the present invention will be clearly understood by the following detailed description with reference to the drawings showing preferred embodiments of the present invention.

First, Figure 2 is a schematic structural diagram of a steel cord twisted pair with an external supply line adjustment device of the present invention, Figure 3 is a longitudinal sectional view of the external supply line adjustment device of the present invention.

In the stranded wire structure of FIG. 2, the same reference numerals as those in FIG.

As shown in the drawing, the external supply line adjusting device of the steel cord twisted pair device of the present invention includes an external element wire 6a and a main motor 5 supplied from an external element supply bobbin 1a, 1b mounted on the external supply table 1. The internal wires 6b supplied from the internal wire supply bobbins 3a and 3b seated on the internal feed table 4 which are driven by rotation) are twisted together to form the steel cord 6. In a typical twisted pair, the one-turn roller 26 is provided on the outer wire moving path between the outer feeder 2 and the inner feeder 4 so that the outer wire 6a winds around the outer circumferential surface of the one-turn roller. It consists of a structure. The one-turn roller 26 is preferably to be installed at the main body inlet side of the internal feed table (4).

At this time, the one-turn roller 26 is composed of a roller body 26a having an arcuate curved outer circumferential surface through which the outer element wire 6a is wound as shown in FIG. 3 and a bearing 26b interposed at the center of the roller body. In the central hole of the bearing 26b, the roller fixing shaft 28 fixed on the support body 27, which is installed upright from the ground, is inserted.

The installation position of the one-turn roller 26 is based on the union point located inside the internal feeder 4 of the external element wire movement path before the external element wire 6a and the internal element wire 6b are associated with each other. External wire movement between the lower guide roller 13c of the outer feeder 2 and the guide roller 13d installed below the vertical feeder of the inner feeder 4 as the point where the element wire 6a coincides with the twisted length. Furnace is preferred.

In the present invention having such a structure, the two strands of external strands 6a released from two external strand supply bobbins 1a and 1b mounted on the outer feeder 2 are in a state in which a constant pull-out force is applied. The one-turn roller 26 enters through the guide rollers 13a, 13b, 13c attached to the external feeder 2.

At this time, the external element wire 6a, which is released from the external element wire supply bobbins 1a and 1b and enters the one-turn roller 26 side, may have a portion in which linearity is poor or overlapping of element wires may occur. The section having an abnormal quality is straightened in the process of winding around the circumferential surface of the one-turn roller 26.

In addition, the external element wire 6a moving past the one-turn roller 26 is subjected to twisting by the rotation of the internal feeder 4, wherein the length of the external element wire 6a subjected to the torsion is one turn. Limited by the roller 26 and the length of the limited torsional section is designed to maintain a length consistent with the torsional length of the inner element 6b, which enters the union between the outer element 6a and the inner element 6b. These two strands are roughly equal twisted in the twist pitch and the helix hight, resulting in a uniform wave and high straightness when subsequently stranded with steel cords.

The external supply line adjusting device of the present invention, that is, a process in which the external element wire 6a passed through the one-turn roller 26 and the internal element wire 6b is manufactured as a steel cord is a steel cord through the conventional twisted pair wire bar as shown in FIG. It is performed in the same manner as the manufacturing process of

In the above embodiment, a steel cord having a 2 + 2 structure in which two strands of external strands and two strands of inner strands are twisted has been described as an example. However, this is merely an example. Of course, it can be applied in the manufacture of steel cords of any structure to which the external element is supplied through.

As described above, in the twisted pair with the external supply line adjusting device of the present invention, the linearity of the external wires drawn out from the external supply table is adjusted for straightness while the twisting length of the external wires is increased. It is associated with each other in a state of receiving the same twist to match the twist length of the internal element wires, and thus has several advantages and effects.

First, even if the external wire wound on the external wire supply bobbin contains a portion where the straightness of the wire is poor or the overlap of the wires is included, the quality defects or sections of the wires are adjusted in the process of passing through the one-turn roller. Since it is not necessary to inspect the wire quality by unscrewing the external wire supply bobbin, the manpower and time can be reduced accordingly.

Next, in the present invention, since the quality of the external wire is improved by the one-turn roller, the disconnection rate of the external wire is reduced in the twisted pair process, and the wave uniformity of the steel cord is made according to the equalization of the twisting degree between the external wire and the internal wire. As a result, it is possible to perform continuous stranded work, but also to improve the quality characteristics (evening of the torsion value across the fatigue and the whole) of the stranded steel cord.

In addition, since the external supply line adjusting device of the present invention is made of a structure in which the one-turn roller is additionally installed on the external element wire moving path at the lower side of the external supply base and the internal supply base without changing the structure of a conventional twisted pair. The device itself is simple and has low installation costs.

Claims (2)

Rotating wheels 4a of the external element wires 6a supplied from the external element wire supply bobbins 1a and 1b mounted on the external supply unit 1 and the internal supply unit 4 rotated and driven by the main motor 5. In a typical twisted pair machine configured to form a steel cord 6 by twisting the internal element wires 6b supplied from the internal element wire supply bobbins 3a and 3b seated on each other, the external supply table 2 External supply line of the steel cord twisted pair, characterized in that the one-turn roller 26 is installed on the external element wire movement path between the inner and outer supply bars 4 so that the external element wire 6a winds around the outer circumferential surface of the one-turn roller. Adjuster. According to claim 1, The one-turn roller 26 is based on the association point located inside the internal feeder (4) of the external element wire movement path before the external element wire (6a) and the internal element wire (6b) is associated with each other. Between the lower guide roller 13c of the outer feeder 2 and the guide roller 13d installed on the vertical lower part of the inner feeder 4 as a point coinciding with the length of the inner wire wire 6a. External supply line adjusting device for a steel cord twisted pair, characterized in that it is installed on the external elementary moving path.