JP4675763B2 - Stranding machine - Google Patents

Description

  The present invention relates to a stranded wire machine for producing a short stranded wire by twisting a plurality of wires.

  For example, as a twisting machine for producing a stranded wire such as a steel cord used as a tire reinforcing material, a tubular twisting machine or a buncher twisting machine is generally used. These tubular and buncher-type twisting machines continuously twist a plurality of wires and wind them around a reel, and cut the long strands wound around the reel into a predetermined length when forming a tire. It is assumed that it will be used. However, these conventional tubular and buncher type twisting machines come out with the twisted wire rotating, and it is necessary to rotate the reel for winding together with the winding device in accordance with the rotation of the twisted wire. There is.

On the other hand, a feed mechanism is added to a rotating body equipped with an over twist roller that is a twist mechanism, and the over twist roller is also used as a take-up capstan. Has been developed, and a twisting machine has been developed that cuts out what has emerged as a twisted wire (see, for example, Patent Document 1). This stranded wire machine is premised on, for example, used in-line at the time of tire molding, cutting the ones that come out as stranded wires in order, and molding the tires on the spot, for example, for tire reinforcement. Because it does not wind around the reel, it can efficiently produce short strands with excellent straightness, and there is no need for a large mechanism that rotates the reel with the winding device. Compared to the buncher type, it can be a compact stranding machine.
International Publication No. 2004/048679 Pamphlet

  However, the above-mentioned conventional stranded wire machine for producing a short stranded wire adds a feeding mechanism to the over twist roller, so that the device configuration is complicated, and further downsizing is difficult, and speeding up is difficult. Have difficulty.

  An object of the present invention is to provide a twisting machine capable of reducing the size and increasing the speed of manufacturing a short twisted wire.

  The twisted wire machine of the present invention is a twisted wire machine that produces a short twisted wire by twisting a plurality of wires, and a pair of belts that rotate by crossing a plurality of wires supplied in a bundle It is characterized by having a twisting mechanism that feeds out while twisting.

  In this twisting machine, a plurality of wires supplied in a bundle are sandwiched between a pair of belts of a twisting mechanism, and the pair of belts cross and rotate to generate a frictional force in the belt running direction. However, the component force in the direction perpendicular to the stranded wire traveling direction becomes the twisting force on the wire, and the component force in the stranded wire traveling direction becomes the feeding force (take-off force). , Sent out while twisting. In this way, a short twisted wire is manufactured by cutting the wire that has come out as a stranded wire. For example, when forming a tire, the wire that has come out as a stranded wire is sequentially cut into short pieces, for example, a tire. Tires can be molded side by side for reinforcement.

  Since this stranded wire machine is not wound on a reel, it can efficiently produce a short stranded wire excellent in straightness. Further, since a large-scale mechanism for rotating the reel together with the winding device is not required, and a complicated configuration in which a feed mechanism is added to the over twist roller is not required, it is easy to reduce the size and speed.

  In the case of a wire that can be twisted with a relatively small twisting force, it can be formed into a twisted wire only by the twisting mechanism including the pair of belts. In addition, when a large twisting torque is required, such as a wire having a small diameter and high strength, a twisting mechanism that applies twisting torque to a plurality of wires that have been bundled before being supplied to the twisting mechanism is provided. Thus, a stranded wire can be easily formed. For the twisting mechanism, it is preferable to use an over twist roller or a rotating deformed die.

  In this twisting machine, when an over twist roller is used for the twisting mechanism, the wire twisting (feeding) is handled by the twisting mechanism consisting of a pair of belts, so the over twist roller only applies twisting force. The structure of the mechanism itself and the structure of the drive system can be simplified as compared with a conventional short twisting wire machine in which a feed mechanism is added to an over twist roller.

  In addition, when a rotating deformed die is used for the twisting mechanism, it becomes easier to reduce the size and speed of the apparatus. In this case, since the rotating deformed die is rotated once by the twisting pitch of the wire (product) twisted by a pair of belts, it may be driven at approximately half the number of revolutions of the twisted wire. Less power is required.

  As described above, since the stranded wire machine of the present invention does not wind around a reel, a short stranded wire excellent in straightness can be efficiently manufactured, and a large-scale mechanism that rotates the reel together with the winding device is required. In addition, since a complicated configuration in which a feed mechanism is added to the over twist roller is not necessary, it is easy to reduce the size and speed.

  And, in the case of a wire that can be twisted with a relatively small twisting force, this twisting machine can be a twisted wire only by a twisting mechanism consisting of a pair of belts, like a wire with a small diameter and a high strength, Even when a large twisting torque is required, it is possible to easily form a twisted wire by providing a twisting mechanism that applies twisting torque to a plurality of wires that are bundled before being supplied to the twisting mechanism.

  In addition, an over twist roller or a rotating deformed die can be used for the twisting mechanism, and when the over twist roller is used, the over twist roller may only provide a twisting force, and the over twist roller The structure of the mechanism itself and the structure of the drive system are simplified as compared with a conventional short wire twisting machine in which a feeding mechanism is added to the wire.

  In addition, when a rotating deformed die is used for the twisting mechanism, the apparatus can be further reduced in size and speed, and power consumption can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First example of embodiment)
1 and 2 show a first example of the embodiment of the present invention. FIG. 1 is a diagram showing an overall configuration of a twisting machine, and FIG. 2 is a plan view (a) and a side view (b) of a twisting mechanism section.

  The stranded wire machine of this embodiment is used as, for example, a stranded wire machine for producing steel cords arranged in-line in a tire production line, and a plurality of cord wires (wires) wound around each wire (see FIG. In this example, three reels) 1A, 1B, 1C and dancer rollers 3A, 3B, 3C for adjusting the tension of the cord wires 2A, 2B, 2C fed from the respective reels 1A, 1B, 1C are fed out. A core plate 4 having a hole for separating and passing the respective cord strands 2A to 2C, a die 6 for assembling and passing the cord strands 2A to 2C passing through the holes of the core plate 4, and this die 6 An over twist roller 7 that is a twisting mechanism that applies a twisting torque to the bundle T1 of the plurality of cord strands 2A to 2C that has passed therethrough, and a plurality of cord elements that are twisted by the over twisting roller 7 A belt-type twisting mechanism 8 that applies a twisting force to the bundle T2 of the wires 2A to 2C and at the same time applies a feeding force (pull-out force), and feeds them while twisting. The dies 10 and 11 through which the stranded wire 9 is passed, and the cutter 12 which sequentially cuts the stranded wire 9 twisted by the twisting mechanism 8 and sent out as a product into a predetermined length.

  The twisting mechanism 8 is composed of a pair of belts (flat belts) 21A and 21B that rotate in an intersecting manner. The pair of belts 21A and 21B are hung on the pair of driving and driven rollers 22A and 23A; 22B and 23B, respectively, and the driving rollers 22A and 23A are respectively driven by sprockets 24 and 25 by motors (not shown). By being driven, each of them rotates (runs) in a certain direction as indicated by arrows in FIGS. The pair of belts 21 </ b> A and 21 </ b> B cross each other in a plan view, overlap vertically, and the crossing portions of the plurality of cord strands 2 </ b> A to 2 </ b> C to which twisting torque is applied by the over twist roller 7. When the pair of belts 21A and 21B rotate with the bundle T2 interposed therebetween, a frictional force is generated in the belt traveling direction, and the component force in a direction perpendicular to the stranded wire traveling direction (right direction in FIGS. 1 and 2). Is a twisting force with respect to the bundle T2 of the cord strands 2A to 2C, and is arranged so that a component force in the traveling direction of the twisted wire becomes a feeding force (take-off force).

  In this twisting machine, a plurality of cord strands 2A to 2C are respectively fed from the reels 1A to 1C, tension is adjusted by dancer rollers 3A to 3C, passed through holes in the eye plate 4, and bundled through a die 6. The twisting torque is applied to the plurality of cord strands 2A to 2C by the over twist roller 7 that is rotationally driven by a motor (not shown) via the rotational driving pulley 31. A bundle T2 of a plurality of cord strands 2A to 2C to which twisting torque is applied by the over twist roller 7 is guided to the twisting mechanism 8 through the die 10, and is sandwiched between the pair of belts 21A and 21B of the twisting mechanism 8. And is sent out while being twisted by the rotating belts 21A and 21B. Then, the stranded wire 9 twisted by the twisting mechanism 8 and fed out through the die 11 is sequentially cut to a predetermined length by the cutter 12, and is supplied as a tire reinforcing material on the spot, for example, on the tire production line.

  The example shown in the drawing is a case where a steel cord is manufactured by twisting three cord strands. However, the twisting machine of the first example twists a plurality of wires to form a short strand. It can be widely applied to the general twisting machine to be manufactured.

(Second example of embodiment)
FIG. 3 shows a second example of the embodiment of the present invention. (A) is a figure which shows the principal part structure of a strand wire machine, (b) is a figure which shows the shape of the hole of a rotation deformed die.

  As in the first example, the twisting machine of this embodiment is used as a twisting machine for manufacturing steel cords arranged in-line in a tire manufacturing line, for example. Instead of the over twist roller 7 of the first example, a rotating deformed die 41 is used. The point provided with a feeding reel that feeds out a plurality of cord strands 2A to 2C (three in the example in the figure), and a dancer roller that adjusts the tension of each cord strand 2A to 2C that is fed out, This is the same as the first example. However, in this embodiment, there is provided a die 42 that directly collects the plurality of cord strands 2A to 2C fed from the feeding reel without using the eye plate. The point provided with the twist mechanism 8 composed of a pair of belts 21A and 21B is the same as in the first example. In addition, the point provided with the dies 10 and 11 before and after the twisting mechanism 8 and the point provided with the cutter 12 that sequentially cuts the stranded wire 9 twisted by the twisting mechanism 8 and sent out as a product into a predetermined length. This is the same as the example. The configuration and operation of the twist mechanism 8 are the same as those in the first example.

  As shown in FIG. 3B, the hole 43 of the rotary deformed die 41 is substantially triangular so that a bundle T1 of a plurality of cord wires 2A to 2C (three in the example in the figure) cannot pass through in a relatively unrotatable state. Is formed.

  In this twisting machine, each of the plurality of cord strands 2A to 2C is fed out from a feeding reel (not shown), the tension is adjusted by a dancer roller (not shown), passes through a die 42, and becomes a bundle T1, The plurality of cord strands 2A to 2C are passed through the hole 43 of the rotational deformed die 41, and the rotational deformed die 43 is rotationally driven by a motor (not shown) via the rotational drive sprocket 44, whereby twisting torque is applied. Then, a bundle T2 of a plurality of cord strands 2A to 2C to which twisting torque is applied by the rotating deformed die 43 is guided to the twisting mechanism 8 through the die 10, and is applied to the pair of belts 21A and 21B of the twisting mechanism 8. It is sandwiched and sent out while being twisted by the rotating belts 21A and 21B. Then, the stranded wire 9 twisted by the twisting mechanism 8 and fed out through the die 11 is sequentially cut to a predetermined length by the cutter 12, and is supplied as a tire reinforcing material on the spot, for example, on the tire production line.

  The illustrated example is a case where a steel cord is manufactured by twisting three cord strands, but the twisting machine of the second example also twists a plurality of wires to form a short strand. It can be widely applied to the general twisting machine to be manufactured.

(Third example of embodiment)
FIG. 4 shows a third example of the embodiment of the present invention. (A) is a top view of the twist mechanism part of a twisting machine, (b) is the side view (b).

  The twisting machine of this embodiment is used as a twisting machine for producing steel cords arranged in-line in a tire production line, for example, as in the first example. No twisting mechanism such as the over-twist roller 7 or the rotary deformed die 41 of the second example is provided, and a plurality of cord strands 2A (three in the example shown in the figure) are formed only by the twisting mechanism 8 composed of a pair of belts 21A and 21B. Twist ~ 2C. In the case of a wire that can be twisted with a relatively small twisting force, it can be sufficiently formed into a twisted wire. The point provided with a feeding reel that feeds out a plurality of cord strands 2A to 2C (three in the example in the figure), and a dancer roller that adjusts the tension of each cord strand 2A to 2C that is fed out, The same as in the first and second examples. Further, similarly to the first example, a eye plate (not shown) is provided, and dies 10 and 11 are provided before and after the twisting mechanism 8. Further, cylindrical guides 50 </ b> A, 50 </ b> B, and 50 </ b> C for guiding the cord strands 2 </ b> A to 2 </ b> C to the die 10 are provided in front of the die 10 on the entrance side of the twisting mechanism 8. The point provided with the cutter 12 which cut | disconnects the stranded wire 9 twisted by the twist mechanism 8 and sent out as a product sequentially to predetermined length is the same as that of the 1st and 2nd example above. And the structure and operation | movement of the twist mechanism 8 are as having demonstrated in the above 1st example.

  In this twisting machine, a plurality of cord strands 2A to 2C are respectively fed from a feeding reel (not shown), tension is adjusted by a dancer roller (not shown), and a hole in a eye plate (not shown) is formed. As a guide, it is guided by guides 50A to 50C, passes through the die 10, becomes a bundle T1, is guided to the twisting mechanism 8, is sandwiched between the pair of belts 21A and 21B of the twisting mechanism 8, and is sent out while being twisted by the belts 21A and 21B. It is. Then, the stranded wire 9 twisted by the twisting mechanism 8 and fed out through the die 11 is sequentially cut to a predetermined length by the cutter 12, and is supplied as a tire reinforcing material on the spot in the tire production line, for example.

  The illustrated example is a case where a steel cord is manufactured by twisting three cord strands, but the twisting machine of this third example is also a short strand by twisting a plurality of wires. It can be widely applied to general twisting machines for manufacturing.

  In addition, the present invention supplies a bundle of a plurality of wires previously cut to a predetermined length to the twisting mechanism 8 composed of the pair of belts 21A and 21B, and twists them in a state where both ends are free. An embodiment in which is manufactured is also possible.

It is a figure showing the whole twisted wire machine composition of the 1st example of an embodiment of the invention. It is the top view (a) and side view (b) of the twist mechanism part of the strand wire machine of the 1st example of embodiment of this invention. It is the figure (a) which shows the principal part structure of the stranding machine of the 2nd example of embodiment of this invention, and the figure (b) which shows the shape of the hole of a rotation deformed die. It is the top view (a) and side view (b) of the twist mechanism part of the stranding machine of the 3rd example of embodiment of this invention.

Explanation of symbols

1A, 1B, 1C Feeding reel 2A, 2B, 2C Cord strand 3A, 3B, 3C Dancer roller 4 Eye plate 6, 10, 11, 42 Dies 7 Over twist roller (twist mechanism)
8 Twisting mechanism 9 Stranded wire 12 Cutter 21A, 21B Belt 22A, 23A Driving side roller 22B, 23B Driven side roller 24, 25 Sprocket 31 Rotation driving pulley 41 Rotating deformed die (twisting mechanism)
43 hole 44 sprocket for rotation drive 50A, 50B, 50C Guide

Claims (4)

A twisting machine that produces a short twisted wire by twisting a plurality of wires, and twists and feeds the wires supplied in a bundle between a pair of rotating belts and twisting them. A stranded wire machine characterized by comprising: The twisting machine according to claim 1, further comprising a twisting mechanism that applies twisting torque to a plurality of wires that are bundled before being supplied to the twisting mechanism. The twisting machine according to claim 2, wherein an over twist roller is used for the twisting mechanism. The twisting machine according to claim 2, wherein a rotating profile die is used for the twisting mechanism.

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