JP2013133581A - Method and device for delivering wire bundle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a method for winding a wire bundle in which a plurality of wires are aligned in parallel to each other, on a driving pulley and/or a driven pulley and uniformly delivering the respective wires in the wire bundle.SOLUTION: A method for winding a wire bundle in which a plurality of wires are aligned in parallel, on a driving pulley and/or a driven pulley for delivering the wire bundle, includes placing a travel path of the wire bundle on the driving pulley and/or the driven pulley on the same straight line perpendicular to a rotary shaft of the driving pulley and/or the driven pulley.

Description

  The present invention relates to a method and an apparatus for feeding a wire bundle to the next step in a wire bundle conveyance path in which a plurality of steel wires are arranged in parallel. Here, as the wire constituting the wire bundle, a cord in which filaments of steel or chemical fiber are twisted, or a monofilament of steel or chemical fiber can be applied.

  Industrial rubber products, typically conveyor belts and pneumatic tires, are typically reinforced with steel wires (hereinafter simply referred to as wires). For example, in a pneumatic tire, a belt and a chafer, as well as a carcass, are generally made of a rubberized cloth in which many steel wires are covered with rubber.

  Here, from the viewpoint of suppressing the separation of the belt, particularly from the end in the width direction, when a plurality of wires are bundled in parallel and bundled and the number of wires driven in the belt layer is the same, It has been proposed to increase the separation in the belt width direction to suppress the above-described progress of separation (see, for example, Patent Document 1).

  Here, the belt ply reinforced with a wire bundle in which a plurality of wires are arranged in parallel is obtained by supplying a plurality of wire bundles to a calender process under a predetermined interval and covering them with a rubber sheet. . In this calendar process, the wire bundles are unwound from the take-up reel and supplied. Therefore, the wire bundle is fed to the take-up reel after being bundled and taken up by the take-up reel, and then the take-up reel on which the wire bundle is taken up is subjected to a calendar process.

  For example, as shown in FIG. 1, a wire bundle 1 is spirally wound between a pair of driven pulleys 10 and a drive pulley 11, as shown in FIG. The necessary driving force is ensured by winding and wrapping over (see (b)).

Japanese Patent No. 2713806

  The method for applying the driving force to the wire bundle 1 described above is because the wire bundle 1 is spirally wound a plurality of times as shown in FIG. A force (in the direction of the pulley axis) (arrow in the figure) was applied, and the wire bundles were often scattered or offset on the contact surface between each pulley and the wire bundle. When such a phenomenon occurs, it becomes difficult to wind evenly between the wires in the bundle when winding on the take-up take-up reel, and there is a difference in the winding length between the wires in the bundle. Will occur. And if there is a difference in winding length between the wires in the take-up reel, when the wire bundle is pulled out from the take-up reel and used in the calendar process described above, the specific wire becomes slack and continues sound production. It became a problem to become impossible.

  Therefore, the present invention has an object to propose a method for passing a wire bundle in which a plurality of wires are arranged in parallel through a pair of a driving pulley and a driven pulley and feeding the wires in the bundle equally. To do.

The inventors have driven a wire bundle in which a plurality of wires are arranged in parallel, that is, a bundle of wires bundled together without being twisted together, through a pair of a drive pulley and a driven pulley for delivery. In order to send the wires evenly when applying force, it has been clarified that it is effective to devise the winding of the wire bundle around the driving pulley and the driven pulley, and the present invention has been completed. It was.
That is, in the conventional method, as shown in FIG. 1 (b), a plurality of wire bundles 1 are wound around a pair of a drive pulley 11 and a driven pulley 10 to obtain a wire feed length in the bundle. Because of the difference, the number of the winding strips is set to be less than one, and the wire bundle is placed so that the winding position and the unwinding position of the wire bundle are placed in a straight line when viewed from the direction orthogonal to the pulley rotation axis. As a result, the wire bundle wound around the take-up reel was found to suppress the difference in winding length between the wires in the bundle.

The present invention is based on the above-described findings, and the gist configuration is as follows.
(1) When a wire bundle in which a plurality of wires are arranged in parallel is wound around a driven pulley and / or a drive pulley and the wire bundle is sent out,
A wire bundle feeding method, wherein a travel path of a wire bundle in the driven pulley and / or the driving pulley is placed on the same straight line perpendicular to a rotation axis of the driven pulley and / or the driving pulley.

(2) When a wire bundle in which a plurality of wires are arranged in parallel is passed through at least one pair of a driven pulley and a drive pulley, and the wire bundle is sent out,
When the wire bundle is wound around an area of the driven pulley and the driving pulley that are less than one round to apply a driving force to the wire bundle, the travel path of the wire bundle in the driven pulley and the driving pulley is set as the driven pulley. And a wire bundle feeding method, wherein the wire bundle is placed on the same straight line perpendicular to the rotation axis of the drive pulley.

(3) The wire bundle is fed out according to (1) or (2), wherein the wire bundle is fed through a plurality of pairs of the driven pulley and the drive pulley. Method.

(4) A feeding device that applies a driving force to a wire bundle in which a plurality of wires are arranged in parallel, and a wire in which a plurality of driven pulleys and driving pulleys are alternately arranged in the wire bundle conveyance path. Bundle delivery device.

  According to the present invention, it is possible to apply a driving force evenly to each of a plurality of wires, and to take up, for example, a take-up reel without causing a difference in feed length. Therefore, when the wire bundle is unwound from the take-up reel to, for example, a calendar process, the slack of the wire is eliminated, so that the productivity of the product using the wire bundle can be improved.

It is a perspective view which shows the sending out procedure of the conventional wire bundle. It is a perspective view which shows the sending out procedure of the wire bundle of this invention. It is a side view explaining the winding angle of the wire bundle to each pulley. It is a side view which shows an example of the apparatus used for the method of this invention. It is a perspective view which shows another example of the apparatus used for the method of this invention. It is a graph which shows the difference between the wires of the winding length in the sending by a plurality of lines. It is a graph which shows the difference between the wires of the winding length in the sending by one line hook. It is a graph which shows the difference between the wires of the winding length in the sending by multi-stage hanging.

Hereinafter, the wire bundle feeding method of the present invention will be described in detail with reference to the drawings.
The wire bundle according to the present invention is sent out using at least a pair of driven pulley 2 and drive pulley 3 as shown in FIG. Here, the driven pulley 2 and the driving pulley 3 are arranged so that the rotation axes are parallel to each other, and the pulleys are arranged close to each other. Reference numeral 4 denotes a drive source such as a motor for driving the drive pulley 3.

In the method of the present invention, the winding of the wire bundle 1 around the driven pulley 2 and the driving pulley 3 is wound around an area of less than one turn of the driven pulley 2 and then the direction of the wire bundle 1 is reversed, and then the driving pulley 3 Basically, it is wound around an area of less than one round and passed from the driven pulley 2 to the driving pulley 3 in an S shape (or an inverted S shape). Note that the positions of the driven pulley 2 and the driving pulley 3 may be interchanged so that the wire bundle 1 is passed from the driving pulley 3 to the driven pulley 2.
At that time, the traveling path of the wire bundle 1 in the driven pulley 2 and the driving pulley 3 is placed on the same straight line L orthogonal to the rotation axes of the driven pulley 2 and the driving pulley 3 as shown in FIG. , i.e., when viewed from the direction perpendicular to the pulley rotation axis (top view of FIG. 2 (b) is supported), the wire bundle so that the positions M ₁ and unwind position M ₂ wrapped wire bundle 1 rests on a straight line It is important to wrap around 1 (hereinafter also referred to as “single stake”), for example, to feed to a take-up reel.

  By winding the wire bundle 1 in a single line according to the above, the force in the pulley axial direction generated by the plurality of pieces of the conventional wire bundle 1 is not applied, and on the contact surface between each pulley and the wire bundle. As a result, the bundle of wires is not scattered or offset, and as a result, uniform feeding between the wires in the bundle is realized.

  In order to reliably feed the wire bundle 1 using the pair of driven pulleys 2 and the drive pulley 3, when the winding region of each pulley of the wire bundle 1 with respect to the drive pulley 3 shown in FIG. It is preferable to adjust the winding angle θ, which is defined by the center angle, that is, to increase the angle θ.

Here, when a pair of driven pulley 2 and drive pulley 3 as shown in FIG. 3 are used, the tension at the winding position M ₁ and the unwinding position M ₂ of the wire bundle 1 is made equal, and the winding angle θ It is preferable to ensure the driving force even when the is small. That is, when the tension at the winding position M ₁ is T ₀ , the tension at the winding position M ₂ is T ₁ , the friction coefficient between the pulley and the wire bundle is μ, and the winding angle is θ, the belt (wire bundle) and the pulley Euler's formula for T ₁ = T ₀ × e ^μθ
Therefore, if the tension T ₀ and the tension T ₁ are made equal, the driving force can be secured even if the winding angle θ is small.

  Furthermore, it is preferable that the driven pulley 2 and the driving pulley 3 are arranged so as to ensure a large winding angle θ of the wire bundle. For example, the pulley arrangement shown in FIG. 4 is recommended.

  Further, as described above, when the wire bundle is hooked on the pulley, it is difficult to increase the winding angle θ. Therefore, the driving pulley 3 and the driven pulley 2 shown in FIG. 5 are alternately arranged. It is particularly advantageous in practice to secure the driving force to be applied to the wire bundle 1 by sequentially winding the wire bundle 1 around a plurality of pairs of pulleys and consequently increasing the number of stages. That is, in order to absorb the tension difference between the winding side and the unwinding side of the wire bundle 1, it is preferable that the driven pulley 2 and the driving pulley 3 are alternately arranged and the wire bundle 1 is alternately wound around them. In FIG. 5, reference numeral 5 denotes a guide pulley.

  In the example described above, the wire bundle is sent out by combining the driving pulley and the driven pulley, but either one of the driving pulley or the driven pulley may be used alone. In other words, when the wire bundle is sent out by the driving force of the driving pulley after being wound around the driving pulley, it is important that the traveling path of the wire bundle is placed on the same straight line perpendicular to the rotation axis of the driving pulley. is there. The same applies to the single use of the driven pulley. When the driven pulley is used alone, the driving force in the driven pulley can be adjusted by the take-out reel on the inlet side of the driven pulley and the take-up reel on the outlet side.

In order to confirm the effect of the method of the present invention, between the wires in a wire bundle in which a steel filament (0.225 mmφ) is used as a wire and six of the wires are aligned in parallel with respect to one strip according to FIG. The difference in the delivery amount was evaluated. That is, according to what was shown in FIG. 2, the wire bundle hung on one line was sent out and wound up to the winding reel, and it evaluated by the difference in the length of the wire wound up by this winding reel.
Here, in order to evaluate the Article 1 seat according to the present invention, the tension T ₁ at the position M ₂ unwinding the tension T ₀ at the position M ₁ wound 2 was the same as 23.5N respectively. This is because the driving force can be secured with a small winding angle θ by making T ₀ and T _{1 the} same from Euler's equation. At that time, the winding angle θ of the drive pulley 3 was 155 °.

Further, as a comparison, the wire bundle was wound around the pair of driving pulleys and driven pulleys with eight lines and sent out as shown in FIG.
The comparison method is to wind the wire bundles sent out to one take-up reel (simultaneously) over a length of 1,000 m, pull out 100 m of them excluding the equipment speed reduction part, and wire for each wire bundle wound. The winding length wound around the wire was measured, and the difference in winding length between the wires was determined. The results are shown in FIG. 6 for the case of 8 lines and in FIG. 7 for the case of 1 line. First, as shown in FIG. 6, in the case of 8 hangs, the difference between the winding length of the longest wound wire and the winding length of the shortest wound wire was 10.7 mm. On the other hand, as shown in FIG.

Furthermore, in accordance with what was shown in FIG. 5, the wire bundle was wound around 5 pairs of drive pulleys and driven pulleys in multiple stages and sent out. Here, the tension T ₀ at the winding position M ₁ :
The winding angle θ of each pair was 180 ° under 23.5 N and the tension T _{1 at} the unwinding position M ₂ : 23.5 N. In the same manner as described above, the winding length is wound on a winding reel (simultaneously) over a length of 1,000 m, 100 m of the equipment speed reduction part is drawn out, and the wound length is wound for each wire in the wound wire bundle. Was measured, and the difference in winding length between the wires was determined. As a result, as shown in FIG. 8, the difference between the winding length of the wire wound the longest and the winding length of the wire wound the shortest was 2.4 mm.

  In the above embodiment, the wire bundle feeding by the steel wire has been described, but the present invention can of course be applied to a wire bundle made of a chemical fiber wire.

DESCRIPTION OF SYMBOLS 1 Wire bundle 2 Driven pulley 3 Drive pulley 4 Drive source 5 Guide pulley

Claims (4)

When a wire bundle in which a plurality of wires are arranged in parallel is wound around a driven pulley and / or a drive pulley and the wire bundle is sent out,
A wire bundle feeding method, wherein a travel path of a wire bundle in the driven pulley and / or the driving pulley is placed on the same straight line perpendicular to a rotation axis of the driven pulley and / or the driving pulley. A wire bundle in which a plurality of wires are arranged in parallel is passed through at least a pair of a driven pulley and a drive pulley, and the wire bundle is sent out.
When the wire bundle is wound around an area of the driven pulley and the driving pulley that are less than one round to apply a driving force to the wire bundle, the travel path of the wire bundle in the driven pulley and the driving pulley is set as the driven pulley. And a wire bundle feeding method, wherein the wire bundle is placed on the same straight line perpendicular to the rotation axis of the drive pulley.   3. The wire bundle feeding method according to claim 1, wherein the wire bundle is fed by passing the wire bundle through a plurality of pairs of the driven pulley and the driving pulley. A feeding device for applying a driving force to a wire bundle in which a plurality of wires are arranged in parallel, wherein the wire bundle is formed by alternately arranging a plurality of driven pulleys and driving pulleys in the wire bundle conveyance path. apparatus.

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