JP2004283854A - Method and device for adjusting warping direction of metal wire body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a metal wire body from springing upward when a sheet is cut by controlling straightness as a whole of a plurality of metal wire bodies supplied in a neatly arranged state, when a process of reforming the plurality of metal wire bodies and that of rubber-coating the plurality of metal wire bodies supplied in a neatly arranged state so as to be made into a composite sheet are directly coupled. <P>SOLUTION: A plurality of steel wires W set by a wire shape-setting device 1 are flatly and parallel arranged and directly fed to a rubber-coating device 2, and coated with unvulcanized rubber to be made into the composite sheet S. In this wire shape-setting and rubber coating direct coupling system, a wire warping adjuster 5 consisting of warp direction adjusting rollers is provided between the wire shape-setting device 1 and rubber coating device 2, and arranges the plurality of steel wires W just before being coated with an elastomer so that the wires are arranged alternately in the opposite directions for every predetermined number of the wires. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a process for producing a sheet-shaped composite material composed of a plurality of metal filaments and an elastomer material used as a reinforcing material for automobile tires, and in particular, a plurality of metal filaments are attached simultaneously. Directly connecting the squeezing step and the rubberizing step to make a sheet-like composite member by covering the elastomeric material such as unvulcanized rubber by aligning the plurality of stenciled metal filaments in a flat and parallel manner, Adjusts the warp direction of multiple metal filaments such as steel wires and steel cords that are supplied in a uniform manner during the squeezing / rubbering process in which the stenciling and rubberizing are performed continuously. The present invention relates to a method and an apparatus for adjusting the direction of warpage of a metal wire.
[0002]
[Prior art]
A steel cord as a tire reinforcing material is a cord having a structure in which steel wires are twisted together, and is superior in flexibility and elongation to a single wire steel wire having the same strength. Therefore, a steel cord is generally used as a tire reinforcing material. And recently, by improving the rubber material, tire molding technology, etc., the twist structure of the steel cord as the tire reinforcing material has been simplified from 1 × 4 to 1 × 3, and further 1 × 2. . Most recently, a single steel wire has been used as a tire reinforcement. However, since a single steel wire lacks flexibility and extensibility as it is, it needs to be corrugated or spiraled. For this reason, a wrinkling device capable of obtaining a steel wire having a uniform small wrinkle and excellent in straightness has already been developed (for example, see Patent Document 1). Normally, a tire manufacturer sets a plurality of bobbins on a feeding machine in a rubber drawing process, and rubber-coats steel wires or steel cords unwound from the plurality of bobbins to form a sheet-like composite material. Separately, the steel wire manufacturing kneading process or the steel cord manufacturing stranded wire process is integrated with the rubber drawing process, and multiple steel wires drawn from the kneading machine are aligned in parallel and rubberized. Attempts have also been made to produce a sheet-like composite member by a method of directly supplying it to the apparatus (not related to a known literature invention).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 6-25983
[Problems to be solved by the invention]
However, the steel wire manufacturing process is integrated with the rubber drawing process, and a plurality of steel wires drawn from the kneading machine or stranded wire machine are aligned in parallel and supplied directly to the rubber drawing device. When manufacturing a sheet-shaped composite member, a plurality of steel wires that have been brazed with a brazing machine are wound around a guide roller, turned around, pulled out, and sent in parallel to the rubber pulling process. Since multiple steel wires are warped in the same direction by a guide roller, when the finished composite sheet is cut in the next process, the four corners of the cut sheet may jump up. As a result, defects in the joining accuracy of the cut sheet may occur, and the quality (uniformity, etc.) of the tire may be adversely affected. That.
[0005]
The phenomenon that the four corners of a composite sheet bounce when a composite sheet manufactured by pulling multiple steel wires in parallel and rubberizing is caused by the torsion (residual twist) and straightness of the steel wire. To do. Among them, the torsion can be solved by managing the individual cord tension and the overall torsion level of a plurality of steel wires. However, with regard to the warpage, it is inevitable that a certain amount of warp remains in the straight direction even if the steel wire manufactured through the soldering process is not defective in straightness. In particular, when a plurality of steel wires are wound around a guide roller from a caulking machine and supplied to the rubber drawing device while changing the direction, the warp is caused in one direction by bending along the diameter of the guide roller. Even if it is straight and stretched, it will spring up when it is cut after becoming a sheet. For this reason, when the completed composite sheet is cut, the four corners of the sheet jump up, and accuracy in joining is likely to occur when joining.
[0006]
An object of the present invention is to provide a sheet-like composite member in which a plurality of metal wire strips are simultaneously crimped, and a plurality of the metal wire strips are flattened in parallel and covered with an elastomer material. As a whole of a plurality of metal filaments that are supplied in a uniform manner in the metal filament squeezing / rubbering process in which the squeezing and squeezing are performed in a continuous manner. An object of the present invention is to provide a method and an apparatus for adjusting the direction of warping direction of a metal wire body, which can adjust straightness and prevent jumping at the time of sheet cutting.
[0007]
[Means for Solving the Problems]
The present invention relates to a sheeting process in which a plurality of metal wire bodies are attached simultaneously and a plurality of the attached metal wire bodies are drawn flat and parallel to cover an elastomer material such as unvulcanized rubber. In a metal wire body kneading / rubbering process, in which the rubberizing process is directly connected to the rubber-drawing process to form a composite material, and a plurality of wires are arranged just before the elastomer material is coated. There is provided a method for adjusting the warp direction of a metal line body, characterized in that the warp directions of the metal line bodies are alternately aligned in opposite directions every predetermined number.
[0008]
In addition, the present invention also includes a squeezing device for simultaneously staking a plurality of metal striates, and coating a surface of the plurality of metal striates arranged flat and parallel with an elastomer material such as unvulcanized rubber. It is composed of a rubber sheeting device that is a sheet-like composite member, and a plurality of metal wires that have been brazed by the brazing device are directly supplied to the rubber drawing device, and the elastomer material is arranged in a flat and parallel state. Metal wire warp directionality that adjusts the warp direction of the metal wire body between the brazing device and the rubber drawing device in the direct connection system of the metal wire body that is coated and made into a sheet-like composite member A warping direction adjusting roller that aligns the warping directions of a plurality of metal wires immediately before being coated with an elastomer material by a rubber drawing device so that they are alternately opposite to each other in a predetermined number. The provision to provide a metal striatal warp direction adjusting apparatus according to claim.
[0009]
In the metal linear body warp directionality adjusting device of the present invention, the metal linear body squeezing / rubber direct connection system wraps a plurality of metal linear bodies squeezed by a squeezing device around a guide roller, In the case of converting and supplying to the rubber pulling device, it is used for adjusting the warping direction between the guide roller and the rubber pulling device with a vertical distance from the guide roller toward the rubber pulling device. A roller is provided, and a plurality of metal wire rods that are wound around a guide roller and fed together are supplied without a roller for adjusting the warp direction and wound on a roller for adjusting the warp direction. By alternately allocating to the supplied ones every predetermined number and reversing the warping direction of the metal wire wound around the roller for adjusting the warping direction, an elastomer such as unvulcanized rubber is The warp direction of the plurality of metal striatum just before over material is coated it is preferable to align so that the opposite direction alternately every predetermined number.
[0010]
According to the method and apparatus for adjusting the warp directionality of metal filaments according to the present invention, a plurality of metal filaments (steel wires, steel cords, etc.) are drawn flat and parallel to cover an elastomer material, and the sheet-like shape is adjusted. In the case of a composite material, a plurality of metal strips that are aligned just before the unvulcanized rubber is coated in the stenciling / rubbering process, in which the stenciling and the rubberizing process are continuously performed. The warp directionality is alternately aligned in the up and down direction for each predetermined number. Thus, the elastomer material is coated on a plurality of metal filaments that are aligned in parallel and the warp directions are alternately aligned in the opposite direction for each predetermined number, and a composite sheet of metal filaments and rubber is manufactured. Is done. In the sheet thus obtained, the warp directions in the opposite directions of the plurality of metal filaments are offset, and the overall warp direction is close to ± 0, and the straightness is excellent. For this reason, it is possible to prevent the four corners of the sheet from jumping up when cutting in a subsequent process, and it is possible to prevent a poor accuracy of the sheet bonding portion at the time of bonding and to ensure uniformity of the bonded sheets. Since the warp directions of a plurality of aligned metal strips just before the elastomer material is coated are alternately aligned by the rollers in opposite directions, the original straightness of each metal strip is adjusted. Regardless of whether it is good or bad, the warpage in the opposite direction is offset, so that the overall straightness is excellent.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
1 to 4 show an example of an embodiment of the present invention. 1 is a schematic diagram of a wire kneading / rubber rolling direct connection system as an example of the embodiment, FIG. 2 is a front view of the wire kneading apparatus, FIG. 3 is a plan view of the wire kneading apparatus, and FIG. It is a schematic diagram which shows the structure of a part.
[0013]
In FIG. 1, reference numeral 1 denotes a wire kneading device that simultaneously kneads a plurality of single-wire steel wires W in a spiral shape, and 2 denotes an unapplied surface on the surfaces of a plurality of steel wires W supplied in a flat and parallel manner. A rubber-drawing device that is coated with an elastomeric material such as vulcanized rubber (hereinafter, described as being representative of unvulcanized rubber) to form a composite sheet S (sheet-like composite member), 3 is a single wire supplied to the wire brazing machine 1 A plurality of reels wound with a steel wire W, 4 is a winder for winding a composite sheet S in which a plurality of metal filaments W are coated with unvulcanized rubber R by a rubber drawing device 2, and Reference numeral 5 denotes a wire warpage adjusting unit that alternately aligns the warp directions of a plurality of aligned steel wires W immediately before the unvulcanized rubber is coated, for every predetermined number.
[0014]
The wire kneading / rubber direct connection system of this embodiment includes a kneading step of simultaneously kneading a plurality of steel wires in a spiral shape, and a surface of a plurality of steel wires W arranged flat and in parallel. This is an integral part of the rubberizing process that covers the unvulcanized rubber and forms the composite sheet S. The steel wires W that have been brazed by the wire brazing apparatus 1 are flattened in parallel and straightened, and rubberized. The composite sheet S is manufactured by supplying directly to the apparatus 2 and coating the unvulcanized rubber. In the wire kneading / rubber drawing process, the wire warp adjusting unit 5 between the wire kneading machine 1 and the rubber drawing device 2 is arranged to be aligned just before the unvulcanized rubber is coated. The warp directions of the steel wires W are alternately aligned in the opposite direction every predetermined number.
[0015]
As shown in FIGS. 2 and 3, the wire kneading apparatus 1 has a table-like base frame 10, and a frame 20 for setting a kneading line is erected on the rear side of the base frame 10. In addition, a dancer installation frame 30 is disposed, and a capstan installation frame 40 is disposed between the line installation frame 20 and the dancer installation frame 30.
[0016]
The frame 20 for setting the kaseling line is inclined on one side (front side), and the kneading machine 21, the false twisting machine 22, and the straightening machine 23 are arranged one by one in that order on the inclined plane. The wrinkle lines are arranged substantially horizontally in a plurality of lines (for example, 15 lines) in stages. In the example shown in the figure, the wrinkle lines are arranged on one side. However, if there are a large number of wrinkle lines to be arranged, both the front and back surfaces are inclined surfaces and the wrinkle lines are arranged on both sides. You may make it do. The kneading machine 21, the false twisting machine 22 and the straightening machine 23 are all known per se. For example, the kneading means, false twisting means and straightening means in the kneading apparatus described in JP-A-6-25983 are used. Equivalent to.
[0017]
The brazing machine 21 has three or more brazing pins protruding in a staggered or linear manner at a predetermined interval, and a steel wire W is passed between the brazing pins to rotate around a pass line as a steel. The wire W is configured to have a spiral-like bevel. The diameter, the number, the interval, and the arrangement of the brazing pins are appropriately set according to the shape of the brazing applied to the steel wire W.
[0018]
The false twisting machine 22 includes a pair of freely rotating false twisting rollers, and the steel wire W that has been fastened by the tacking machine 21 is wound around the pair of false twisting rollers to forcibly rotate around the pass line of the steel wire W. By doing so, the residual twist (kink) is removed. The false twisting machine 22 itself rotates together with the steel wire W, but the kink can be adjusted to either + or-by allowing forward and reverse rotation about the pass line.
[0019]
The straightening machine 23 is provided with a group (at least three or more) straightening rollers having U-grooves or V-grooves arranged, for example, in a staggered manner, and by passing the steel wire W passed through the false twisting machine 22 through the straightening roller group. It is configured to impart straightness.
[0020]
Also, the dancer installation frame 30 is provided with a dancer 32 in which a plurality of dancer rollers 31 (the same number as the number of crease lines) are provided so as to be integrally operable in a coaxial arrangement. A detection sensor 33 is provided.
[0021]
The capstan installation frame 40 is provided with a take-up capstan 42 in which a plurality of rotating drums 41 (the same number as the number of crease lines) are coaxially arranged so as to be integrally rotatable. The take-up capstan 42 is configured in a clutch shape by tightening a plurality of rotating drums 41 with bolts. By loosening the bolts when wire is drawn, each rotating drum 41 can freely rotate individually. The line work becomes easy. During operation, the full rotation drum 41 rotates integrally by tightening the bolts.
[0022]
A guide roller 50 supported by the dancer installation frame 30 is disposed at the forefront position on the base frame 10.
[0023]
In the lower part of the base frame 10, an electric motor 51 and a transmission 52 for driving the caulking machine 21, the false twisting machine 22 and the take-up capstan 42 are arranged, and a control panel (not shown) for controlling them. Is provided.
[0024]
The wire soldering device 1 is a device in which a plurality of (for example, 15) single-wire steel wires W are simultaneously spiraled and fed as they are from the guide roller 50 to the rubber drawing device 2 and arranged adjacent to the rear. A plurality of steel wires W are fed out from the reel 3 of a wire reel stand (not shown) to the number equal to or less than the number of crease lines (for example, 15), and each of the plurality of steel wires W is For example, it passes between three squeezing pins of the squeezing machine 21 of the staking line, and is then wound twice around the false twisting roller provided in the false twisting machine 22 and taken through between the straightening roller groups of the straightening machine 23. It winds around each rotating drum 41 of the capstan 42 and winds around the guide roller 50 via each dancer roller 31 of the dancer 32.
[0025]
When the steel wire W is thus set and the electric motor 51 is rotated, the brazing machine 21 and the false twisting machine 22 are driven via the transmission 52, the take-up capstan 42 is driven, and the steel wire W is It travels while making the axis of the rotating shaft of the squeezing line 21 contact the squeezing pin as a pass line, and at this time, the ironing effect by the squeezing pin and the steel wire with the pass line of the steel wire W as the axis. Due to the synergistic effect with the rotation effect of the wrinkle portion 21 rotating around W, a stable small spiral-like wrinkle is provided. Then, when the brazing machine 21 rotates around the steel wire W about the pass line, the twist generated by twisting or rotating the steel wire W due to the frictional force caused by the contact between the steel wire W and the brazing pin ( The kink) is removed by the false twisting machine 22 so that the spiral shape of the steel wire W becomes more stable, and is further corrected by the correcting roller of the correcting machine 23 so that the center of the spiral is almost straight.
[0026]
In this way, a plurality of single-wire steel wires W are simultaneously hung in a spiral shape, wound around the guide roller 50 through the take-up capstan 42 and the dancer 32, turned in a substantially horizontal direction, and drawn out, thereby adjusting the wire warp. It is supplied to the rubber drawing device 2 through the section 5.
[0027]
In this case, the plurality of steel wires W wound around the guide roller 50 are bent along the diameter of the guide roller 50 so that the direction of warping is the same direction (in the illustrated example, the direction of warping upward). ). The wire warpage adjusting section 5 adjusts the warp direction of the plurality of steel wires W wound around the guide roller 50 and aligned in the same direction so as to be alternately opposite in the vertical direction.
[0028]
As shown in FIG. 4, the wire warpage adjusting unit 5 is located between the guide roller 50 and the drawing rollers 60 and 70 on the rubber drawing device side either on the upper or lower side in the traveling direction (in the illustrated example, the upper side). ) And a single roller 80 for adjusting the warp directionality. In this case, the plurality of aligned steel wires W are sent to the horizontal pulling rollers 60 and 70 without passing through the warp direction adjusting roller 80, and the warp direction adjusting roller. The warp directionality is reversed only by the steel wire W wound around the roller 80 for adjusting the warp directionality by assigning it to a predetermined number (one in the example shown in the figure). By doing so, the plurality of steel wires W alternately have warp directions in the opposite directions, and the alternate warp directions are offset, resulting in excellent straightness as a whole and cutting in the subsequent process In this case, it is possible to prevent the four corners of the sheet from jumping up, and it is possible to prevent a poor accuracy of the sheet bonding portion during bonding, and to ensure the uniformity of the bonding sheet.
[0029]
In the example shown in FIG. 4, the steel wire W is sent to the pulling rollers 60 and 70 in the front in the horizontal direction without passing through the roller 80 for adjusting the warp direction, and the roller 80 for adjusting the warp direction. Although it distributes to every thing to wind around, when there are many all, you may make it distribute to every plurality in the form in which alternate curvature directionality is canceled.
[0030]
Moreover, although the above example is a case where a process of attaching a plurality of steel wires in a spiral shape is directly connected to a rubber drawing process, the present invention manufactures a cord by twisting steel wires with a stranding machine. The stranded wire process can be applied to a case where the stranded wire process is directly connected to the rubber drawing process, and can also be applied to a kneading / rubber drawing process of metal wire bodies other than steel wires and steel cords. Moreover, the composite sheet manufactured through the rubberizing step may be used as a reinforcing material for other rubber products such as a conveyor belt in addition to a reinforcing material for automobile tires.
[0031]
FIG. 5 is a schematic diagram showing a configuration of a wire warpage adjusting unit according to another embodiment of the present invention. In this example, a plurality of metal wire bodies such as steel wires W (in the following description, represented by the steel wires W) are drawn in the horizontal direction and passed through rollers 90 and 100 for feeding. When the rubber is fed to the drawing rollers 60 and 70 on the rubber drawing device side, the drawing is performed immediately before the unvulcanized rubber is coated between the drawing rollers 90 and 100 and the drawing rollers 60 and 70. Two warp direction adjusting rollers 110 and 120 are provided at a distance in the vertical direction so that the warp directions of the aligned steel wires W are alternately aligned in opposite directions. These two upper and lower warpage adjusting rollers 110 and 120 can be adjusted up and down with respect to each other so that the winding angle can be changed according to the warpage of the supplied steel wire W. Further, these warpage adjusting rollers 110 and 120 are replaceable so that they can be appropriately changed to those having different roller diameters according to the type of the steel wire W or the like. In this case, the plurality of steel wires W drawn out through the feeding rollers 90 and 100 are alternately lined up and down in two vertical directions for every predetermined number (one in the illustrated example). The rollers 110 and 120 for adjusting the warp direction are respectively wound from the outside, and are drawn flat and parallel through the drawing rollers 60 and 70, and supplied to a rubber drawing device (not shown). . At that time, by alternately winding the rollers 110 and 120 for adjusting the upper and lower warping directions from the outside, the warping directions of the aligned steel wires W immediately before being rubberized are alternately opposite. Aligned in the direction. Therefore, regardless of whether the original steel wire straightness is good or bad, the warp directions are alternately aligned in the opposite direction, and the alternate warp directions are offset when a composite sheet is formed. As a whole, it is excellent in straightness. Therefore, the finished composite sheet does not jump up at the four corners of the sheet when it is cut in a subsequent process, and when bonded, it is possible to prevent a poor accuracy of the bonded portion and to ensure the uniformity of the bonded sheet.
[0032]
【The invention's effect】
As is clear from the above description, according to the present invention, when a plurality of metal filaments are aligned flat and parallel to cover an elastomer material such as unvulcanized rubber to form a sheet-like composite material. In the wire stroking / rubbering process in which the brazing and rubber drawing are continuously performed, a plurality of aligned metal strips just before the elastomer material is coated are alternately turned up and down every predetermined number. The warp directionality in the opposite direction will be offset, and the warp directionality in the opposite direction will be offset, resulting in excellent straightness as a whole, and it is possible to prevent the four corners of the sheet from jumping up during sheet cutting. It is possible to prevent inaccuracy of the sheet bonding portion and to ensure the uniformity of the bonding sheet.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a configuration of a steel wire body kneading / rubber direct connection system according to an embodiment of the present invention.
FIG. 2 is a front view of a wire brazing machine according to an embodiment of the present invention.
FIG. 3 is a plan view of a wire brazing machine according to an embodiment of the present invention.
FIG. 4 is a schematic diagram showing a configuration of a wire warpage adjusting unit in the embodiment of the present invention.
FIG. 5 is a schematic diagram showing a configuration of a wire warpage adjusting unit according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wire kneading apparatus 2 Rubber | gum drawing apparatus 3 Reel 4 Winding machine R Unvulcanized rubber S Composite sheet W Steel wire 5 Wire curvature adjusting part 50 Guide roller 60, 70 Pulling roller 80 Rolling direction adjustment roller 90 , 100 Roller 110, 120 Roller for adjusting warping direction

Claims (3)

A kneading step of simultaneously kneading a plurality of metal filaments; a rubberizing step of arranging a plurality of kneaded metal filaments flatly and in parallel to cover an elastomer material and forming a sheet-like composite member; In the stenciling / rubbering process of metal strips, where the stencil and rubberization are continuously performed, the warp directionality of the aligned metal strips just before the elastomer material is coated A method for adjusting the direction of warpage of a metal wire body, wherein the predetermined number is alternately arranged in the opposite direction. A kneading device for simultaneously kneading a plurality of metal filaments, and a rubberizing device for coating a surface of a plurality of metal filaments arranged flat and in parallel with an elastomer material to form a sheet-like composite member; A metal sheet comprising a plurality of metal filaments that are brazed by the brazing device, directly supplied to the rubber pulling device, and coated with an elastomer material in a flat and parallel state to form a sheet-like composite member In the linear stroking / rubber direct connection system, a metal striation warping direction adjusting device for adjusting a warping directivity of the metal striation between the clinging device and the rubber pulling device, Provided with a roller for adjusting the warping direction that aligns the warping directions of a plurality of metal filaments immediately before the elastomer material is coated with a rubberizing device so that they are alternately opposite each other in a predetermined number. DOO metal striatal warp direction adjusting apparatus according to claim. The metal wire body squeezing / rubber direct connection system is a system in which a plurality of metal wire stakes attached by the squeezing device is wound around a guide roller, the direction is changed, and the rubber striated device is supplied to the rubber drawing device. A roller for adjusting the warp direction is provided between the roller and the rubber drawing device at a distance from the guide roller toward the rubber drawing device in the vertical direction, and the guide roller is wound and aligned. A plurality of metal wire rods to be supplied without being provided via the warp direction adjusting roller and a plurality of metal wire rods that are wound around and supplied to the warp direction adjusting roller. By alternately allocating and reversing the warp direction of the metal wire wound around the warp direction adjusting roller, the rubber material immediately before the elastomer material is coated by the rubber drawing device. Several metals striatal metal striatal warp direction adjusting apparatus according to claim 2, wherein the aligned such that the opposite direction alternately every predetermined number of warp direction of.

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