JPH069151A - Traverse roller for metallic cord - Google Patents

Abstract

PURPOSE:To provide a traverse roller which can take up a metallic cord in such a way that no remaining twist is dispersed in the longer direction. CONSTITUTION:The V shaped groove 11 over the outer circumference, which has a metallic cord 3 installed for guiding the cord to a take-up reel, is so formed that the radius of the groove bottom shall be less than 1/2 of the diameter D of the metallic cord 3, and the groove angle alpha shall be 30 to 60 deg.. A traverse roller 10 provided with the V shaped groove is characterized by the preventive effect against the twisting and self-rotation of the cord, this constitution thereby prevents the cord from being squeezed, and also lessens the dispersion of remaining twist caused by the aforesaid squeezing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case where a metal cord for various uses made by twisting metal filaments is wound by a twisting machine after being wound, or a wound cord is wound on another reel by a rewinding machine. The present invention relates to a traverse roller used for correctly guiding a metal cord to a winding surface of a reel during winding.

[0002]

2. Description of the Related Art When winding a filament such as a fiber thread or a metal wire on a reel, it reciprocates in the reel axial direction in synchronization with the rotation of the reel so that the winding surface is evenly and uniformly wound on the reel. A traverser that guides the linear body to the winding surface while moving is used. For example, a traverser equipped with a traverse roller is adopted as a winding device of a twisting machine for manufacturing a metal cord for reinforcing rubber articles, which the inventor handles. The traverse roller used in this traverser has a groove angle of 90 to 90 with respect to the outer peripheral V groove for guiding the metal cord.
The groove bottom radius is designed to be 150 °, which is about 1 to 3 times the diameter of the metal cord.

[0003]

The quality of the metal cord wound on the reel by using the conventional traverser is deteriorated.
The inventors have found that the cause is the traverse roller of the above-mentioned design. That is, unlike the fiber thread and the single metal wire, the twisting stress due to the twisting process remains on the metal cord (hereinafter referred to as residual twist), and the twist is attached at a certain angle. Since such a metal cord is wound by the roller while receiving a small amount of ironing, a conventional traverse roller that accepts this cord loosely (a state where there is room for movement) has a residual twist and a twist that is newly generated by ironing. The cycle in which the metal cord is accumulated and released due to tension fluctuations, changes in the contact state with the roller, etc. is repeated, and as a result, the residual twist of the metal cord after winding varies in each part in the cord longitudinal direction, It was found that the standard deviation and average value of the residual twist per length were also large.

The metal cord is squeezed in the roller portion when the traverse roller moves, the change in the wire feeding direction between the final guide roller and the traverse roller and the delay of the cord itself as compared with the traverse roller. It is considered that the major cause is that the cord swings on the roller due to movement or the like (the contact position with the groove surface changes).

The present invention is intended to solve the problem of quality deterioration during winding by devising the shape of the V groove of the traverse roller and further devising the arrangement of the roller.

[0006]

According to the present invention, in order to eliminate the above-mentioned problems, a V groove on the outer periphery of a traverse roller is provided.
The shape is set to satisfy the following conditions a) and b).

A) R <D / 2 D: Diameter of metal cord (mm) R: Radius of groove bottom (mm) b) 30 ° ≦ α ≦ 60 ° α: Groove angle (°) This traverse roller is When a plurality of traversers are provided and the metal cord is guided through each roller in order, the effect becomes remarkable. Further, at this time, when a plurality of traverse rollers are arranged so that the total value of the contact angles of the metal cords to be lined with each roller is 270 ° C. or more, a more excellent effect is exhibited.

[0008]

According to the above V groove, the metal cord floats from the groove bottom and is supported by being sandwiched between the two side surfaces of the groove. During actual winding, an appropriate winding tension is applied to the metal cord in this state, so a force that causes the cord to bite into the groove is generated, and the restraint force by the groove surface increases, which causes the metal cord to run and rotate. Does not occur, ironing of the cord is avoided, and residual twist accumulation, release, and new twist generation are eliminated.

In the traverser using a plurality of traverse rollers of the present invention in combination, the contact resistance of the metal cord increases as the number of rollers increases. Above all, the total value of the contact angle of the metal cord with respect to each traverse roller is 270
If the angle is more than 0 °, the contact resistance increases remarkably, which is advantageous in improving the reliability of restraint.

[0010]

FIG. 1 shows an example of the traverse roller of the present invention. As shown in the figure, on the outer periphery of the traverse roller 10, a V groove 11 having a groove bottom radius R of less than 1/2 of the diameter of the metal cord 3 and a groove angle α of 30 to 60 ° is provided.

The traverser provided with the traverse roller may be a known one that is guided by a guide skeleton and propelled by a ball screw mechanism, and the movement direction is reversed at both ends of the inner width of the reel. Although not shown in the drawing, such a traverser is also used in the double twisting and twisting machine of FIG.

The double twisting and twisting machine of FIG. 2 guides a plurality of metal filaments 1 to a twisting die 2, and a flyer 8
After twisting twice by rotating, the false twisting device 5 uses the metal cord 3
After adjusting the residual twist, the take-up capstan 6 performs constant-speed take-up. Then, after that, the three traverse rollers 10 attached to the traverser are passed through the guide rollers 7 and wound on the take-up reel 9.

At this time, the traverse roller 10 repeatedly moves in the reel axial direction within the inner width of the reel, but since the guide roller 7 and the take-up reel 9 before and after the wire feeding direction are kept in the fixed positions, 2 (b) Like this chain line, the wire feeding direction of the cord after passing the final guide roller constantly changes within the range of the angle θ, and the wire feeding direction is at a position excluding the midpoint of the reel inner width orthogonal to the reel axis. The moving force acts on the cord in the reel axis direction. This force is also generated when the metal cord moves more slowly than the traverse roller. Therefore, in the conventional V-groove shape in which the metal cord is loosely received, the contact position of the cord sways to the left and right, Since the traverse roller of the present invention restrains the cord from both sides, this runout does not occur. Therefore, the cord will not be squeezed when passing over the traverse roller, and the cord will also be prevented from rotating due to biting into the groove, which will cause new twist due to squeezing, accumulation of residual twist and release. Does not happen.

The results of the effect confirmation test will be described below.

The 1 × 5 × 0.25 single-twisted structure metal cord 3 shown in FIG. 3 is obtained by using the double-twisting wire machine shown in FIG.
The traverse roller was manufactured by varying the groove shape and the number of uses, and the residual twist value of the metal cord after winding was examined. The manufactured metal cord has a diameter D = 0.67 m
m, twist pitch = 10 mm, twist direction is S twist. The twisting speed was tested at 76 m / min. Table 1 shows the measurement results when the number of measurements was 20 times each.

[0016]

[Table 1]

The symbol "+" in the table means that the twist rotates in the tightening direction.

As can be seen from the test results, when the traverse roller of the present invention is used, the standard deviation of residual twist becomes 0.35 or less, which is less than half that of the conventional one, and the deterioration of quality due to winding does not occur.

[0019]

As described above, according to the traverse roller of the present invention, the radius of the groove bottom and the groove angle are reduced so that the twist and rotation of the metal cord are restricted by the groove side surface. Especially when using multiple combinations,
It is possible to effectively prevent the phenomenon that the residual twist during winding and the newly generated twist are accumulated and released, and the residual twist at each part in the longitudinal direction of the cord can be kept to a small variation value. It is extremely advantageous in terms of providing high quality products and improving workability and efficiency in manufacturing or rewinding.

[Brief description of drawings]

FIG. 1 is a side view of a traverse roller according to an embodiment.

FIG. 2 (a) is a schematic plan view of a double twisting and twisting wire machine employing the same roller, and FIG. 2 (b) is a side view showing a change in a wire sending direction due to displacement of a traverser.

FIG. 3 is a sectional view of a metal cord used in a winding test.

[Explanation of symbols]

 1 metal filament 2 twisting die 3 metal cord 4 turn roller 5 false twisting device 6 take-up capstan 7 guide roller 8 flyer 9 take-up reel 10 traverse roller 11 V-groove

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[Procedure amendment]

[Submission date] February 23, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

A) R <D / 2 D: Diameter of metal cord (mm) R: Radius of groove bottom (mm) b) 30 ° ≦ α ≦ 60 ° α: Groove angle (°) This traverse roller is When a plurality of traversers are provided and the metal cord is guided through each roller in order, the effect becomes remarkable. Further, at this time, when a plurality of traverse rollers are arranged so that the total value of the contact angles of the metal cords to be lined with each roller is 270 ° or more, a more excellent effect is exhibited.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoru Kamitama 1-1-1 Kunyo Kita, Itami City Sumitomo Electric Industries Itami Works

Claims (3)

[Claims] 1. A traverse roller for guiding a metal cord to a winding reel that is rotating while moving back and forth in the reel axial direction, wherein a V groove on the outer periphery on which the cord is hung satisfies the following conditions a) and b). A traverse roller for metal cords that is characterized by. a) R <D / 2 D: Diameter of metal cord (m
m) R: radius of groove bottom (mm) b) 30 ° ≦ α ≦ 60 ° α: groove angle (°) 2. A traverser comprising a plurality of traverse rollers according to claim 1, wherein the metal cord is guided to the winding surface of the winding reel via the traverse rollers in order. 3. The traverse roller has a total contact angle of 27 with respect to the individual rollers of the metal cord to be lined.
The traverser according to claim 2, wherein the traverser is arranged at a position of 0 ° or more.