JP4615706B2 - Twisted wire untwisting device, rubber-coated stranded wire manufacturing apparatus, and rubber-coated stranded wire manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  This inventionTwisted wire untwisting device, rubber-coated stranded wire manufacturing apparatus, and rubber-coated stranded wire manufacturing methodIs about.
[0002]
[Prior art]
Generally, a steel cord used as a reinforcing material for a tire is composed of a stranded wire formed by twisting a plurality of steel wires. Then, in a state where a plurality of the stranded wires are aligned, a rubber-coated cord is formed by covering the outer periphery with rubber, and this rubber-coated cord is used as a reinforcing material for the carcass portion and the belt portion of the tire. Yes.
[0003]
Thus, when a steel cord is used as a rubber-coated cord, the rubber material is chemically well bonded to the outer peripheral surface of each strand of stranded wire, and the rubber material is between each strand. It is required that the vehicle enters well without gaps. For example, if the state of adhesion between the stranded wire and the rubber material and the state of the rubber material entering the stranded wire are poor, when the rubber-coated cord is used for a tire, the stranded wire and the rubber material may There is a possibility of causing a separation phenomenon to peel off. Further, a gap is generated in the stranded wire over the entire length of the stranded wire. When such a gap occurs, moisture that has entered from a rubber cut or the like enters the gap, and rust is generated over the entire length of each filament due to the moisture. In such a case, there is a problem that the strength of the rubber-coated cord is remarkably lowered or the separation phenomenon is accelerated.
[0004]
Further, when the rubber material enters the stranded wire as described above, the strength of the rubber-coated cord using the stranded wire is reduced as a result. In order to compensate for this decrease in strength, it is necessary to increase the amount of twisted wire in anticipation of the decrease in strength in advance, which leads to an increase in the weight of the tire. Also, if the adhesive strength between the stranded wire and the rubber material is weak, a time difference will occur in the integral movement of the stranded wire and the rubber material, so-called play will occur, hindering steering stability, and loss of energy consumption. There was a problem of inviting.
[0005]
In order to eliminate such problems, for example, Japanese Patent Publication No. 7-18103 (first conventional configuration), Japanese Patent Laid-Open No. 10-88488 (second conventional configuration), and Japanese Utility Model Publication No. 311276 (third). Conventional steel cords) have been proposed.
[0006]
In the first conventional configuration, a bent portion and a non-bent portion are repeatedly formed along the spiral direction on at least one of the plurality of wires constituting the stranded wire. The bent portion and the non-bent portion form a gap into which rubber can enter between adjacent filaments.
[0007]
Moreover, in the 2nd conventional structure, one core wire located in the center among the several wire which comprises a strand wire consists of a flat wire which has a continuous wave shape in a longitudinal direction. And the continuous wave shape of this core wire forms the gap | interval which rubber | gum can enter between each wire.
[0008]
Furthermore, in the 3rd conventional structure, the groove | channel extended in a longitudinal direction is formed in the outer peripheral surface of the several filament which comprises a strand wire. And when a rubber material approachs into the groove | channel of each filament, the adhesiveness of the rubber material with respect to each filament and the penetration property of the rubber material between each filament are improved.
[0009]
[Problems to be solved by the invention]
However, these conventional configurations have the following problems.
That is, in the first and second conventional configurations, at least one of the plurality of filaments is provided with a deformed portion in the longitudinal direction, and the filaments have different properties from other filaments. I have to. For this reason, when an external force is added to the stranded wire, the external force cannot be uniformly supported by each filament. In other words, it is necessary to preliminarily give the external wire carrying capability more than necessary to the stranded wire. Further, when a rubber coating is applied to a stranded wire with a rubber extruder, sufficient tension in the longitudinal direction is applied to the stranded wire, so that the amount of displacement of the deformed portion of the specific filament under static pressure is reduced by rubber. There was also a problem that it was not guaranteed at the time of coating.
[0010]
Further, in the third conventional configuration, since a part of the circular cross section of each filament is missing, not only the tensile strength per occupied sectional area of the stranded wire is greatly reduced, but also the twist of the filament and There was a problem that the flexibility was extremely poor.
[0011]
  The present invention has been made paying attention to such problems existing in the prior art. The purpose is to retain a predetermined stress against external force and the like, and to ensure adhesion with a rubber material. As a result, it has excellent rust prevention and vibration absorption. Rubber-coated stranded wire that is also effective and can suppress the generation of frictional heatUntwisting tool suitable for the manufacture of rubber, a device for manufacturing a rubber-coated stranded wire provided with the twisting device, and a method for manufacturing a rubber-coated stranded wireIs to provide.
[0019]
  To achieve the above objective,Claim1InA stranded wire untwisting tool for untwisting each strand of a stranded wire formed by twisting a plurality of wires,Rotating body that can rotate around one axisWith,The rotating body includesA plurality of separation passing portions for separating and passing each filament of the stranded wireButFormed almost along the axis of the rotating bodyHas beenIt is characterized by that.
[0020]
  Claim2InA stranded wire untwisting tool for untwisting each strand of a stranded wire formed by twisting a plurality of wires into a plurality of layers,Multiple rotating bodies that can rotate around the same axisThe plurality of rotating bodies includesA plurality of separation passing portions for separating and passing each filament of the stranded wireButFormed almost along the axis of the rotating bodyHas beenIt is characterized by that.
[0021]
  Claim3In the claim1And a rotating means for providing rotation in the twisting direction of the stranded wire to the rotating body.
  Claim4In the claim1~ Claim3EitherOne paragraphA twisted wire twisting-back tool, and a rubber-covered twisted wire provided with rubber supply means for applying a thin-film coating on the outer periphery of each untwisted wire on the downstream side of the twisted wire. Features wire manufacturing equipment.
[0023]
  ContractClaim5In the claim4And a pretreatment means for pretreating the stranded wire is provided upstream of the rubber supply means.
[0024]
  Claim6In the claim4 or 5And a post-processing means for post-processing the stranded wire on the downstream side of the rubber supply means.
[0025]
  Claim7InIt is a manufacturing method of the rubber-coated twisted wire which gave the rubber coating to the twisted wire formed by twisting a plurality of filaments, The twisted-back tool of the twisted wire according to any one of claims 1 to 3. By moving each strand of stranded wire through the separation passage formed in the rotating body,Untwist the stranded wire to form a predetermined interval between them, and in this state, apply a thin rubber film coating to the outer periphery of each filament and return to the original twisted statethingIt is characterized by.
[0026]
  Claim8In the claim7In the present invention, a rubber coating is applied in a state where a plurality of the stranded wires are aligned, and a ribbon shape is formed..
[0032]
  oneIf a plurality of separation passage portions for separating and passing each of the filaments are formed along the axial direction in a rotating body that can rotate around the axis, a plurality of filaments can be twisted with a simple configuration. It is possible to easily return the twists of the twisted wires to be combined, and to reliably form a predetermined interval between the filaments.
[0033]
Even if the wire is difficult to return to its original twisted state after twisting back by providing a rotating means for imparting rotation to the rotating body in the twisting direction of the twisted wire, By rotating the body, the original twisted state can be reliably restored.
[0034]
In addition, by providing a rubber thin film coating means for applying a rubber thin film coating on the outer periphery of each strand in the untwisted state on the downstream side of the untwisting tool, in a state where the twist of the twisted wire is returned by the untwisting tool, A rubber thin film coating can be applied to the outer periphery of the stranded wire.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Below, 1st Embodiment of this invention is described based on FIGS. 1-3.
[0037]
In the rubber-coated stranded wire manufacturing apparatus of this embodiment, as shown in FIG. 1, the stranded wire 41 is transferred at a predetermined speed in the longitudinal direction by a transfer mechanism (not shown). As shown in FIGS. 1 and 3A, the stranded wire 41 is formed by twisting a wire 41a made of a metal material such as three steel wires by a known method. Each wire 41a is subjected to a plating process such as a brass plating as a primer process for improving the adhesive strength with rubber. In addition, each of the filaments 41a has the same shape and the same shape with a circular cross section over its entire length.
[0038]
A preheating chamber 42 as pretreatment means is disposed in the transfer path of the stranded wire 41, and pretreatment preheating is performed on the stranded wire 41 in the preheating chamber 42. In addition, as pre-processing with respect to this strand 41, washing | cleaning or application | coating of an adhesion promoter etc. may be given besides the said preheating.
[0039]
A rubber liquid tank 43 serving as a rubber supply means is disposed on the downstream side of the preheating chamber 42, and a pair of upper guide rollers 44, 45 and one lower guide roller 46 are rotatably supported therein. Yes. A liquid rubber 47 is stored in the rubber liquid tank 43, and the lower guide roller 46 is immersed in the liquid rubber 47.
[0040]
In the rubber liquid tank 43, one rotating body 49 of the untwisting tool 48 rotates on an axis extending in the transfer direction of the stranded wire 41 through the bearing 50 so as to be positioned below the upper guide roller 44. It is arranged to be possible. As shown in FIG. 2, the rotating body 49 includes a cylindrical main body 49a, a flange 49b formed at one end of the main body 49a, and a small-diameter protrusion 49c formed at the other end of the main body 49a. It consists of and.
[0041]
In the main body 49 a and the flange 49 b of the rotating body 49, three separation passing holes 51 as separation passing parts are formed penetrating at predetermined intervals so as to extend along the axial direction of the rotating body 49. In order to communicate with these separation passage holes 51, three separation passage grooves 52 as separation passage portions are provided on the outer periphery of the small-diameter protrusion 49 c of the rotating body 49 so as to extend along the axial direction of the rotating body 49. It is formed at intervals.
[0042]
As shown in FIGS. 1 and 3 (b), each wire 41 a of the stranded wire 41 that has passed through one upper guide roller 44 is connected to each separation passage hole 51 and separation passage groove of the rotating body 49 of the untwisting tool 48. By being transferred through 52, the twist of each wire 41a is partially returned, and a predetermined interval S is formed between them. Thereafter, the stranded wire 41 that has passed through the rotating body 49 is transferred via the lower guide roller 46 and the other upper guide roller 45.
[0043]
Then, as shown in FIGS. 1 and 3 (c), each wire 41a of the stranded wire 41 is transferred through the liquid rubber 47 in the rubber liquid tank 43 in a state where the spacing S is formed. The rubber thin film coating layer 53 is formed on the outer circumference of each filament 41a. Further, when each wire 41a of the stranded wire 41 is separated and inserted and transferred to each separation passage hole 51 and separation passage groove 52 of the rotator 49, the rotator 49 is twisted based on the twist stress of the stranded wire 41. Since they are rotated in the mating direction, before the stranded wire 41 reaches the lower guide roller 46, each wire 41a is returned to its original twisted state by its own twist stress.
[0044]
Adjacent to the rubber liquid tank 43, a drying chamber 54 as a post-processing means is disposed on the downstream side of the transfer path of the stranded wire 41. Then, the wire 41a of the stranded wire 41 with the rubber thin film coating layer 53 formed on the outer periphery passes through the drying chamber 54 so that the rubber thin film coating layer 53 on the outer periphery of the wire 41a is dried. It has become.
[0045]
A rubber extruder 55 as a rubber supply means is disposed downstream of the drying chamber 54. A twisted wire guide 56 is provided at the inlet portion of the rubber extruder 55, and a base 57 is provided at the outlet portion. And as shown in FIG.1 and FIG.3 (d), in the state by which each filament 41a was returned to the original twisted state by the twist stress of itself, the twisted wire 41 passes the inside of this rubber extruder 55. By being transferred, the rubber coating layer 58 is formed on the entire outer periphery of the stranded wire 41, and the rubber-coated stranded wire 59 is manufactured.
[0046]
As described above, in this rubber-coated stranded wire manufacturing apparatus, the stranded wire 41 passes through the rotating body 49, the rubber liquid tank 43, and the rubber extruder 55 of the untwisting tool 48 and is transferred in the longitudinal direction. The rubber thin film coating layer 53 is formed on the outer periphery of each wire 41a, and the rubber coating layer 58 is formed on the entire outer periphery of the stranded wire 41, so that the rubber-coated stranded wire 59 can be continuously manufactured.
[0047]
Therefore, according to this embodiment, the following effects can be obtained.
(1) In the rubber-coated stranded wire manufacturing apparatus of this embodiment, a stranded wire 41 formed by twisting together a plurality of metal material-made filaments 41 a is arranged in a longitudinal direction via a rotator 49 of a untwisting tool 48. By moving the wire, the strands of the filaments 41a are unwound and a predetermined interval S is formed between them. In this state, the stranded wire 41 is passed through the liquid rubber 47 in the rubber liquid tank 43, and the rubber thin film coating layer 53 is formed on the outer periphery of each filament 41a. And after each wire 41a returns to the original twisted state by its own twist stress, the twisted wire 41 is passed through the rubber extruder 55 to form the rubber coating layer 58 on the entire outer periphery of the twisted wire 41, A rubber-coated stranded wire 59 is manufactured.
[0048]
For this reason, unlike the above-described conventional configurations, each wire 41a is uniformly twisted, so that each wire 41a can carry an external force uniformly. For this reason, it is not necessary to give the external force carrying capacity more than necessary to the stranded wire 41, and a predetermined stress can be retained with respect to the external force or the like, which can contribute to weight reduction of the tire. Further, it is possible to obtain a rubber-covered stranded wire 59 in which sufficient adhesion between each wire 41a of the stranded wire 41 and the rubber material is ensured. In addition, since the entire outer periphery of the stranded wire 41 is covered with the rubber coating layer 58 in a state where the outer periphery of each wire 41a is covered with the rubber thin film coating layer 53 without any gaps, as shown in FIG. There is no gap between the filaments 41a of the wire 41. For this reason, moisture does not enter the inside of the stranded wire 41, and the rust prevention can be remarkably enhanced. Furthermore, since each filament 41a is contacting through the rubber thin film coating layer 53, it is excellent in the absorption of vibration, and it suppresses that each filament 41a directly friction-contacts and generate | occur | produces friction heat. be able to.
[0049]
(2) In the rubber-coated stranded wire manufacturing apparatus of this embodiment, the untwisting tool 48 is composed of a rotating body 49 that can rotate on an axis extending along the transfer direction of the stranded wire 41, and the rotating body 49 includes Are formed with a plurality of separation passage holes 51 and separation passage grooves 52 for separating and passing the filaments 41a. For this reason, with the simple structure of the twist back tool 48, the twist of each wire 41a can be returned and the predetermined space | interval S can be easily formed among them. Therefore, the rubber thin film coating layer 53 can be uniformly coated on the outer periphery of each filament 41a in the formation state of the spacing S.
[0050]
(3) In the rubber-coated stranded wire manufacturing apparatus of this embodiment, the preheating chamber 42 is provided on the upstream side of the rubber liquid tank 43, and before the stranded wire 41 passes through the liquid rubber 47, On the other hand, pretreatment preheating is performed. For this reason, the liquid rubber 47 can be reliably attached to the outer periphery of the filament 41a of the stranded wire 41, and the rubber thin film coating layer 53 can be uniformly and firmly coated.
[0051]
(4) In the rubber-coated stranded wire manufacturing apparatus of this embodiment, a drying chamber 54 for drying the rubber thin film coating layer 53 on the outer periphery of the wire 41a is provided on the downstream side of the rubber liquid tank 43. . Therefore, the rubber thin film coating layer 53 can be completely dried and firmly adhered to the outer periphery of the filament 41a, and mixing with the rubber coating layer 58 formed by the rubber extruder 55 can be suppressed. Therefore, the function of the rubber thin film coating layer 53 can be effectively exhibited.
[0052]
(Second Embodiment)
Next, a second embodiment of the present invention will be described with a focus on differences from the first embodiment.
[0053]
Now, in this 2nd Embodiment, as shown in FIG. 4, the strand wire 41 is formed by twisting together the filament 41b which consists of polymeric materials, such as three polyesters and nylon, with a known method. . Each filament 41b is coated with an adhesive as a primer treatment for improving the adhesion to rubber. A rotating body 49 of a untwisting tool 48 having the same structure as that of the first embodiment is rotatably supported in the rubber liquid tank 43 via a bearing metal 61, and a driven gear 62 is fitted on the upper end portion thereof. It is fixed. A drive motor 63 as a rotating means is disposed in the rubber liquid tank 43, and a drive gear 64 that meshes with the driven gear 62 is attached to the motor shaft.
[0054]
When the stranded wire 41 is separated and passed through the separation passage hole 51 and the separation passage groove 52 of the rotator 49 of the untwisting tool 48, a predetermined distance S between the strands 41b of the stranded wire 41 is obtained. In this state, the stranded wire 41 passes through the liquid rubber 47 in the rubber liquid tank 43, so that the rubber thin film coating layer 53 is formed on the outer periphery of each filament 41b.
[0055]
Further, when the stranded wire 41 is separated and passed through the separation passage hole 51 and the separation passage groove 52 of the rotating body 49 of the untwisting tool 48, the drive motor 63 causes the drive gear 64 and the driven gear 62 to pass through. The rotating body 49 is positively rotated in the twisting direction of the stranded wire 41. Thereby, each filament 41b of the strand wire 41 is rotated in the twisting direction.
[0056]
Therefore, as described above, even when the filaments 41b of the stranded wires 41 are formed of a polymer material and the twisting force of the filaments 41b is weak, the filaments 41b can rotate the rotating body 49 of the untwisting tool 48. After passing, it is reliably returned to the original twisted state by the rotation of the rotating body 49.
[0057]
In addition, the adhesive agent coating to each filament 41b is performed similarly to the case of the rubber thin film coating shown in FIG. That is, after the twisted wire 41 is untwisted by the untwisting tool 148, the twisted wire 41 passes through the adhesive tank 143 and the adhesive is applied to the outer peripheral surface of each wire 41b, and then the drive motor 163 is twisted together. Then, the stranded wire 41 is passed through a drying chamber (not shown), and the adhesive is dried. Thus, the adhesive is also uniformly applied to the entire outer peripheral surface of each filament 41b.
[0058]
Therefore, according to the second embodiment, in addition to the effects described in (1) to (4) in the first embodiment, the following effects can be obtained.
(5) In the rubber-coated stranded wire manufacturing apparatus of this embodiment, a drive motor 63 is provided for applying rotation in the twisting direction of the stranded wire 41 to the rotating body 49 of the untwisting tool 48. . For this reason, even when each wire 41b of the stranded wire 41 is formed of a polymer material and the wire 41b is difficult to return to the original twisted state due to its own twist stress after being twisted back, The original twisted state can be reliably restored by rotation. Moreover, when it replaces with the strand wire 41 which consists of polymeric materials, and twists a thin strand wire which consists of a thin metal line | wire with low rigidity similarly to the above and coats a rubber thin film, there exists a possibility that a twist may not return. In such a case, after coating with the rubber thin film, it may be rotated in the twisting direction in the same manner as described above.
[0059]
(Third embodiment)
Next, a third embodiment of the present invention will be described based on FIGS. 5 and 6 with a focus on differences from the above embodiments.
[0060]
In the third embodiment, as shown in FIG. 6 (a), the stranded wire 41 is composed of wire 41a, 41b made of six metal materials or polymer materials with one wire as a core. It is formed by twisting by a known method.
[0061]
Moreover, as shown in FIG.5 and FIG.6 (b), 51 A of center separation passage holes as one separation passage part are penetrated and formed in the center of the rotary body 49 of the twist back tool 48 over the full length. . Six peripheral separation passage holes 51B as separation passage portions are formed at predetermined intervals in the main body portion 49a and the flange portion 49b of the rotating body 49 so as to surround the center separation passage hole 51A. Six separation passage grooves 52 as separation passage portions are formed at predetermined intervals on the outer periphery of the small-diameter protruding portion 49c of the rotating body 49 so as to communicate with these peripheral separation passage holes 51B.The
[0062]
Therefore,In this 3rd Embodiment, as shown to Fig.6 (a)-FIG.6 (d), while moving the strand 41 formed by twisting together seven strands 41a and 41b to a longitudinal direction, each filament is carried out. The rubber-coated stranded wire 59 can be manufactured by forming the rubber thin film coating layer 53 on the outer periphery of the 41a and 41b and forming the rubber coating layer 58 on the entire outer periphery of the stranded wire 41. Therefore, substantially the same effects as those described in (1) to (5) in the first embodiment and the second embodiment can be exhibited.
[0063]
(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described based on FIGS. 7 to 16 with a focus on differences from the respective embodiments.
[0064]
The manufacturing apparatus of the fourth embodiment includes a first half manufacturing apparatus for manufacturing a ribbon-like rubber-covered stranded wire as shown in FIGS. 7 and 8, and a rubber-coated stranded wire as shown in FIGS. The manufacturing apparatus of the latter half which manufactures a belt continuously to manufacture of this is comprised. First, a rubber coated strand manufacturing apparatus will be described. As shown in FIGS. 7 and 8, this manufacturing apparatus includes a bobbin mount, a preheating chamber 42 as pretreatment means, and a rubber liquid tank 43 as rubber supply means. A drying chamber 54 as post-processing means, a rubber extruder 55 as rubber supply means, and a tension transfer mechanism 67 are provided.
[0065]
In the bobbin gantry, eight bobbins 69 are rotatably supported on a gantry 68 with a brake, and the stranded wires 41 are wound and accommodated in these bobbins 69, respectively. In addition, these stranded wires 41 are formed by twisting together wire 41a made of a plurality of metal materials, as in the first embodiment. Then, as shown in FIGS. 7, 8, and 12 (a), the eight strands 41 are fed out from the bobbin 69 by the operation of the tensile transfer mechanism 67, and are almost linearly arranged at predetermined intervals in the lateral direction. In the aligned state, it is transferred in the longitudinal direction at a predetermined speed.
[0066]
As shown in FIGS. 7 to 9, eight sets of guide rollers 44 to 46 and untwisting tools 48 having the same configuration as in the first embodiment are provided in the transfer path of each twisted wire 41 in the rubber liquid tank 43. Correspondingly arranged side by side. Then, as shown in FIG. 9 and FIG. 12 (b), the filaments 41 a of these stranded wires 41 are transferred through the separation passage hole 51 and the separation passage groove 52 of the rotating body 49 of the twist back tool 48. Thus, the twist of each stranded wire 41 is returned, and a predetermined interval S is formed between the stranded wires 41a.
[0067]
Further, in this state, each stranded wire 41 passes through the liquid rubber 47 in the rubber liquid tank 43 and is transferred, so that the outer periphery of the wire 41a of each stranded wire 41 as shown in FIG. Further, the rubber thin film coating layer 53 is simultaneously formed. Furthermore, after the strand 41a of each strand 41 passes each twist return tool 48, the strand 41a of those strands 41 is returned to the original twisted state by own twist stress.
[0068]
As shown in FIGS. 7, 8, 10, and 11, a pair of rollers 70 and 71 are rotatably disposed in the preheating chamber 42 and the drying chamber 54, and are disposed on the outer periphery of the rollers 70 and 71. Has a large number of tooth-like protrusions protruding at predetermined intervals. Then, a plurality of the stranded wires 41 are transferred between the rollers 70 and 71 in the preheating chamber 42, so that the pretreatment preheating is performed for the entire length of the stranded wires 41 prior to the covering of the rubber thin film coating layer 53. Over the entire surface. In addition, a plurality of stranded wires 41 formed by coating the rubber thin film coating layer 53 in the drying chamber 54 circulates between the rollers 70 and 71, and thereby the rubber thin film coating layer 53 on each stranded wire 41. Is uniformly dried over the entire length without adhering to the outer peripheral surfaces of the rollers 70 and 71.
[0069]
The rubber extruder 55 is provided with a base 57 similar to that of the first embodiment. And in the state where each twisted wire 41 was returned to the original twisted state, it passes through the inside of the base 57 of this rubber extruder 55, and is transferred to FIGS. 7, 8, and 12 (d). As shown, a rubber coating layer 58 is formed on the entire outer periphery of the stranded wire 41 so that a flat ribbon-like rubber-coated stranded wire 72 is manufactured.
[0070]
Next, the latter half of the manufacturing method for continuously manufacturing a belt from the ribbon-like rubber-coated stranded wire 72 will be described. As shown in FIGS. 13 and 14, this manufacturing apparatus includes a belt manufacturing mechanism 75 that manufactures an inner diameter side belt 73 and an outer diameter side belt 74 from a ribbon-like rubber-coated stranded wire 72, and these belts 73 and 74. A belt forming mechanism 76 that overlaps and forms a predetermined shape.
[0071]
In the belt manufacturing mechanism 75, a pair of winding drums 78 and 79 having different outer diameters are arranged on the stand 77 at a predetermined interval in the vertical direction, and the outer periphery of the winding drums 78 and 79 is a spiral with the inclination direction reversed. Blade grooves 78a and 79a are formed. The winding drums 78 and 79 are reversed around a fulcrum 80 by a reversing mechanism (not shown) so that their vertical positions are changed.
[0072]
That is, the inner diameter side belt 73 and the outer diameter side belt 74 are generally arranged in a state where they are overlapped on the inner diameter side and the outer diameter side of the tire, and the width of the inner diameter side belt 73 and the width of the outer diameter side belt 74 are the same. Is different. Therefore, the outer diameter of one winding drum 78 for forming the inner diameter side belt 73 is different from the outer diameter of the other winding drum 79 for forming the outer diameter side belt 74. Further, as shown in FIGS. 15A and 16A, one winding drum 78 is formed with a spiral blade groove 78a inclined upward to the right, and the other winding drum 79 has a left-hand side. A spiral blade groove 79a inclined upward is formed.
[0073]
Then, with either one of the winding drums 78 and 79 disposed at the upper position, the ribbon-like rubber-covered stranded wire 72 is guided by the guide mechanism 81 and is in close contact with the outer periphery of the winding drums 78 and 79. As shown in FIGS. 15B and 16B, cylindrical wound bodies 82 and 83 having a desired length are formed. Thereafter, the upper and lower positions of the winding drums 78 and 79 are reversed by the reversing mechanism, and the winding drums 78 and 79 formed with the cylindrical wound bodies 82 and 83 are disposed at the lower position.
[0074]
In this state, one winding drum78Upper cylindrical winding body82The edge tape 84 is formed on the outer periphery of the blade groove by a tape winding mechanism (not shown).78aAttached with winding. Thereafter, the cylindrical wound bodies 82 and 83 on the respective winding drums 78 and 79 are cut along the blade grooves 78a and 79a by the rotary blade 86 of the cutting mechanism 85, and FIG. 15 (c) and FIG. 16 (c). ), The inner diameter side belt 73 and the outer diameter side belt 74 are manufactured. The belts 73 and 74 are peeled off from the outer periphery of the winding drums 78 and 79 by a peeling member (not shown), and transferred and placed on the perforated tray 87.
[0075]
As shown in FIGS. 13 and 14, the belt forming mechanism 76 is provided with a forming drum 88 and a winding device 89. And first,Inner diameter sidebelt73Is moved to a lower position of the forming drum 88 along a rail (not shown), and the inner diameter side belt 73 on the perforated tray 87 is moved up by the winding device 89 and the outer periphery of the forming drum 88 is moved. Wound tightly around. ThenOuter diameter sidebelt74Is moved to a position below the forming drum 88, and the outer diameter side belt 74 on the perforated tray 87 is tightly wound around the outer periphery of the forming drum 88. Thereby, the inner diameter side belt 73 and the outer diameter side belt 74 are overlapped on the forming drum 88, and the belt used for the tire crown portion is manufactured by separating them from the forming drum 88.
[0076]
As described above, a belt corresponding to one tire can be automatically and continuously manufactured from the manufacture of the ribbon-like rubber-covered stranded wire 72 as long as the tire size is not changed.
[0077]
Therefore, according to the fourth embodiment, in addition to the effects described in (1) to (4) in the first embodiment, the following effects can be obtained.
(6) In the rubber-coated stranded wire manufacturing apparatus of this embodiment, a ribbon-shaped rubber-coated stranded wire 72 is formed by applying a rubber thin film coating in a state where a plurality of stranded wires 41 are aligned. ing. For this reason, for example, after forming a rubber-coated stranded wire composed of one stranded wire 41, a plurality of the rubber-coated stranded wires are aligned to form a ribbon-shaped rubber-coated stranded wire 72 composed of a plurality of stranded wires 41. Therefore, the ribbon-like rubber-coated stranded wire 72 can be easily manufactured.
[0078]
(7) In the belt manufacturing apparatus of this embodiment, the belt is continuously manufactured using the ribbon-like rubber-coated stranded wire 72 manufactured by the rubber-coated stranded wire manufacturing apparatus. . For this reason, it is not necessary to stock the ribbon-shaped rubber-coated stranded wire 72 after the ribbon-shaped rubber-coated stranded wire 72 is manufactured, and the belt can be efficiently manufactured continuously after the ribbon-shaped rubber-coated stranded wire 72 is manufactured.
[0079]
(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described based on FIGS. 17 to 24 with a focus on differences from the respective embodiments.
[0080]
Now, in this 5th Embodiment, as shown in FIG.17 and FIG.18, the manufacturing apparatus of the first half which manufactures a ribbon-like rubber-covered strand, and manufacture of a rubber-covered strand as shown in FIG.21 and FIG.22. And the latter half of the manufacturing apparatus for continuously manufacturing the body ply. First, a rubber coated strand manufacturing apparatus will be described. As shown in FIGS. 17 and 18, the manufacturing apparatus includes a bobbin mount, a rubber liquid tank 43 as a rubber supply means, and a drying chamber 54 as a post-processing means. Further, a rubber extruder 55 as a rubber supply means and a tensile transfer mechanism 67 are provided.
[0081]
The bobbin mount is provided with eight bobbins 69 having substantially the same structure as that of the fourth embodiment, and stranded wires 41 are respectively wound and accommodated in the bobbins 69. In addition, each strand wire 41 of this 5th Embodiment is formed by twisting together the wire 41b which consists of a several polymeric material similarly to the said 2nd Embodiment. Then, as shown in FIGS. 17, 18, and 20 (a), the eight strands 41 are fed out from the bobbin 69 by the operation of the tensile transfer mechanism 67 and are aligned at predetermined intervals in the lateral direction. In this state, it is transferred in the longitudinal direction at a predetermined speed.
[0082]
As shown in FIGS. 17 to 19, in the rubber liquid tank 43, eight sets of guide rollers 44 to 46, a twisting back tool 48 and a driving motor 63 having the same configuration as in the second embodiment are provided for each stranded wire 41. Are arranged side by side corresponding to the transfer path. Then, as shown in FIGS. 19 and 20 (b), the rotating body 49 of each twist back tool 48 is rotated by the drive motor 63 in the close direction of the twisted wire 41, and the wire 41 b of each twisted wire 41. Is transferred through the separation passage hole 51 and the separation passage groove 52 of the rotator 49 of the untwisting tool 48, the twist of each stranded wire 41 is returned, and a predetermined distance S between the filaments 41b is returned. Is formed.
[0083]
Further, in this state, each stranded wire 41 passes through the liquid rubber 47 in the rubber liquid tank 43 and is transferred, so that the outer periphery of the wire 41b of each stranded wire 41 as shown in FIG. Further, the rubber thin film coating layer 53 is simultaneously formed. Furthermore, after the wire 41b of each strand 41 passes each twist return tool 48, the wire 41b of those strands 41 is returned to the original twisted state by its own twist stress.
[0084]
As shown in FIGS. 17 and 18, the drying chamber 54 is provided with a pair of rollers 70 and 71 having the same configuration as in the fourth embodiment. Then, a plurality of stranded wires 41 formed by coating the rubber thin film coating layer 53 are circulated between these rollers 70 and 71, so that the rubber thin film coating layer 53 on each stranded wire 41 has a full length. The film is uniformly dried over the entire area.
[0085]
Further, the rubber extruder 55 is provided with a base 57 similar to that of the first embodiment and the fourth embodiment. And in the state where each twisted wire 41 was returned to the original twisted state, it passes through the inside of the base 57 of this rubber extruder 55, and is transferred to FIG. 17, FIG. 18 and FIG. 20 (d). As shown, a rubber coating layer 58 is formed on the entire outer periphery of the stranded wire 41 so that a flat ribbon-like rubber-coated stranded wire 72 is manufactured.
[0086]
Next, the latter half of the manufacturing method for continuously manufacturing the body ply from the ribbon-like rubber-coated stranded wire 72 will be described. As shown in FIGS. 21 and 22, this manufacturing apparatus includes a ply manufacturing mechanism 91 that manufactures a cylindrical wound body from a ribbon-like rubber-covered stranded wire 72, and ply molding that forms a body ply from the cylindrical ply. And a mechanism 92.
[0087]
In the ply manufacturing mechanism 91, a pair of winding drums 94 and 95 are arranged on the stand 93 at a predetermined interval in the vertical direction. These winding drums 94 and 95 are reversed around a fulcrum 96 by a reversing mechanism (not shown) so that their vertical positions are changed. Then, with either one of the winding drums 94 and 95 disposed at the upper position, the ribbon-like rubber-covered stranded wire 72 is guided by the guide mechanism 97 and is in close contact with the outer periphery of the winding drums 94 and 95. As shown in FIG. 22, a cylindrical wound body 98 having a desired length is formed. Thereafter, the upper and lower positions of the winding drums 94 and 95 are reversed by the reversing mechanism, and the winding drums 94 and 95 in which the cylindrical wound body 98 is formed are disposed at the lower position.
[0088]
In this state, as shown in FIG. 23A, the cutting mechanism 99 is moved close to the cylindrical wound body 98 on the winding drums 94 and 95 disposed at the lower position, and the cutting mechanism 99 moves the cylinder. The wound body 98 is cut in the longitudinal direction. That is, the cutting mechanism 99 is equipped with a pressing roller 100, a cutter 101, and a peeling member 102 so that these members 100 to 102 are moved integrally along the longitudinal direction of the cylindrical wound body 98. It has become. Then, after the cylindrical wound body 98 is cut by the cutter 101, the cutting edge of the cylindrical wound body 98 is detached from the outer periphery of the winding drums 94 and 95 by the peeling member 102.
[0089]
Next, the winding drums 94 and 95 are rotated, and the cut edge of the cylindrical wound body 98 is hung from the outer periphery of the winding drums 94 and 95. In this state, as shown in FIG. 23B, the peeling bar 103 is inserted between the cut edge of the cylindrical wound body 98 and the outer peripheral surface of the winding drums 94 and 95, and the peeling bar 103 and The cylindrical wound body 98 is forcibly separated from the outer peripheral surfaces of the winding drums 94 and 95 by the cooperative action with the rotation of the winding drums 94 and 95. Then, the peeled cylindrical wound body 98 is transferred and placed on the tray 104 that stands by just below the winding drums 94 and 95.
[0090]
As shown in FIGS. 21 and 22, the ply forming mechanism 92 is provided with a forming drum 105 and a stitching device 106 having an opening 105 a extending in the longitudinal direction on the outer periphery. Then, the tray 104 on which the cut cylindrical wound body 98 is placed is moved to a position below the forming drum 105 along a rail (not shown), and the tray 104 is rotated by the rotation of the forming drum 105 and the relative movement of the tray 104. The upper cylindrical wound body 98 is tightly wound around the outer periphery of the forming drum 105. In this case, the suturing device 106 is moved and arranged at a position corresponding to the forming drum 105.
[0091]
Thereafter, as shown in FIG. 24A, the forming drum 105 is rotated by a predetermined angle, and the opening 105a of the forming drum 105 where the winding start end and the winding end end of the cylindrical wound body 98 are in contact with each other is formed. Arranged at the position directly above. In this state, as shown in FIGS. 24B and 24C, the suturing device 106 is moved along the opening 105a of the forming drum 105, and the suturing device 106 causes the winding start end and the winding end of the forming drum 105 to move. The body plies are manufactured by press-stitching the ends.
[0092]
Therefore, according to the fifth embodiment, in addition to the effects described in (1), (2) and (4) to (6) in each of the above embodiments, the following effects can be obtained.
[0093]
(8) In the ply manufacturing apparatus of this embodiment, the body ply is continuously manufactured using the ribbon-like rubber-covered stranded wire 72 manufactured by the rubber-coated stranded wire manufacturing apparatus. . For this reason, it is not necessary to stock the ribbon-like rubber-covered stranded wire 72 after the manufacture, and the body ply can be efficiently manufactured continuously after the ribbon-like rubber-covered stranded wire 72 is manufactured.
[0094]
(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with a focus on differences from the respective embodiments.
[0095]
In the sixth embodiment, as shown in FIG. 25, instead of the rubber liquid tank 43 and the rubber extruder 55 in the first embodiment, a rubber extruder 108 having a single configuration as a rubber supply means is provided. Is provided. One rotating body 49 of the untwisting tool 48 having the same configuration as that of the first embodiment is rotatably disposed at the inlet portion of the rubber extruder 108 via a bearing metal 109. And each strand 41a of the stranded wire 41 is transferred through the separation passage hole 51 and the separation passage groove 52 of the rotator 49 of the untwisting tool 48, so that the twist of the stranded wire 41 is returned and between the respective strands 41a. A predetermined interval S is formed at the end.
[0096]
A base 110 is disposed at the outlet of the rubber extruder 108. And while each strand 41a of the stranded wire 41 is returned to the original twisted state by its own twisting stress, it passes through the inside of the base 110 and is transferred to the entire outer periphery of each strand 41a. A rubber coating layer 58 is also formed. As a result, a rubber-coated stranded wire 59 made of one stranded wire 41 is manufactured.
[0097]
Therefore, according to the sixth embodiment, the following effects can be obtained in addition to the effects described in (1) to (4) in the respective embodiments.
(9) In the rubber-coated stranded wire manufacturing apparatus according to this embodiment, a stranded return tool 48 is provided at the inlet of the rubber extruder 108, and the stranded wire 41 is untwisted by the rewound tool 48, while each stranded wire is returned. A rubber coating layer 58 that also serves as a rubber thin film coating layer is formed on the entire outer periphery of 41a. Therefore, unlike the first embodiment, it is not necessary to equip the rubber liquid tank 43 and the rubber extruder 55 as rubber supply means, the configuration of the manufacturing apparatus can be simplified, and the rubber-coated stranded wire 59 can be simplified. Can be manufactured with high efficiency.
[0098]
(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described with a focus on differences from the respective embodiments.
[0099]
In the seventh embodiment, as shown in FIG. 26, instead of the rubber liquid tank 43 and the rubber extruder 55 in the fourth embodiment, a rubber extruder 112 having a single configuration as a rubber supply means is provided. Is provided. A plurality of rotating bodies 49 of the untwisting tool 48 having the same configuration as in the first and fourth embodiments are arranged in parallel at the inlet portion of the rubber extruder 112 via a bearing metal 113. . Then, in a state where the plurality of stranded wires 41 are aligned, the respective strands 41a are transferred through the separation passage holes 51 and the separation passage grooves 52 of the respective rotating bodies 49, whereby the stranded wires 41 are twisted. As a result, a predetermined distance S is formed between the filaments 41a.
[0100]
A base 114 is disposed at the outlet of the rubber extruder 112. And while the strand 41a of each stranded wire 41 is returned to the original twisted state by its own twist stress, it is transferred through the base 114 and transferred to the entire outer periphery of each stranded wire 41. A rubber coating layer 58 that also serves as a coating layer is formed. Thereby, a ribbon-like rubber-covered stranded wire 72 made of a plurality of stranded wires 41 is manufactured.
[0101]
Therefore, according to the sixth embodiment, the following effects can be obtained in addition to the effects described in (1) to (4), (6), and (7) in the respective embodiments.
[0102]
(10) In the apparatus for producing a rubber-coated stranded wire of this embodiment, a plurality of rotating bodies 49 of the twist back tool 48 are arranged in parallel at the inlet of the rubber extruder 112, and a plurality of rotating bodies 49 are provided by these rotating bodies 49. The rubber thin film coating layer 53 is formed on the entire outer periphery of the twisted wire 41 while the twist of the twisted wire 41 is returned. For this reason, unlike each said embodiment, it is not necessary to equip the rubber liquid tank 43 and the rubber extruder 55 as a rubber | gum supply means, and while being able to simplify the structure of a manufacturing apparatus, it is a ribbon-like rubber-coated twisted wire 72 can be manufactured with high efficiency.
[0103]
(Eighth embodiment)
Next, an eighth embodiment of the present invention will be described with a focus on differences from the respective embodiments.
[0104]
In the eighth embodiment, as shown in FIGS. 27 and 28, the first twisting roller 116 and the second twisting back constituting the untwisting tool 48 are provided in the rubber liquid tank 43 as the rubber supply means. The roller 117 and the third untwisting roller 118 are disposed in a state where they are shifted to the upper position, the lower position, and the intermediate position, and are gradually shifted in one direction along the rotation axis. Further, the first twisting roller 119 and the second twisting roller 120 are shifted in the lower position and the upper position in the rubber liquid tank 43 so as to be continuous with the twisting-back rollers 116 to 118 and rotated. It is disposed in a state where the position is gradually shifted in the other direction along the axis. The second twist back roller 117, the third twist back roller 118, and the first twist roller 119 are immersed in the liquid rubber 47 in the rubber liquid tank 43.
[0105]
Then, the stranded wire 41 made of the polymer material filament 41a is circulated by the first twisting roller 116 to the third twisting roller 118 and transferred while being bent and inclined in one direction in the rotation axis direction. The wire 41 is twisted in the untwisting direction, and the twist of the twisted wire 41 is returned. In this state, after the rubber thin film coating layer 53 is coated on the outer periphery of the stranded wire 41, the stranded wire 41 is circulated by the first twisting roller 119 and the second twisting roller 120 and bent in the other direction of the rotation axis. By being transferred while being inclined, the twisted wire 41 is twisted in the twisting direction, and the twisted wire 41 is returned to the original twisted state.
[0106]
Therefore, according to the eighth embodiment, the following effects can be obtained in addition to the effects described in (1), (3), and (4) in the respective embodiments.
(11) In the apparatus for producing a rubber-covered stranded wire of this embodiment, the stranded wire 41 is transferred while being bent and inclined in one direction by the first rewound roller 116 to the third rewound roller 118. While the twist of the stranded wire 41 is returned, the stranded wire 41 is transferred while being bent and inclined in the other direction by the first twisting roller 119 and the second twisting roller 120, so that the twisted wire 41 is returned to the original twisted state. It is supposed to be returned to the state. For this reason, since only the rollers 116 to 120 are configured, the structure is simple, and the rubber-coated stranded wire 59 is manufactured from the stranded wire 41 having a weak twisting force made of the polymer material wire 41a. can do.
[0107]
(Ninth embodiment)
Next, a ninth embodiment of the present invention will be described with a focus on differences from the respective embodiments.
[0108]
In the ninth embodiment, as shown in FIGS. 29 and 30, the untwisting tool 48 is an annular first rotating body 124 that is rotatably supported by a support member 122 via a bearing metal 123. And a second rotator 126 supported in the first rotator 124 via a bearing metal 125 so as to be relatively rotatable. The first rotating body 124 is formed with nine separation passing holes 127 as predetermined separation intervals, and the second rotating body 126 has three separation passing holes 128 as separation passing parts. It is formed at predetermined angular intervals.
[0109]
And it consists of the filaments 41a and 41b of 12 metal materials or polymer materials.Multiple layersThe first and second rotating bodies 124 and 126 are rotated by transferring the filaments 41a and 41b of the stranded wire 41 through the separation passage holes 127 and 128 of the first and second rotating bodies 124 and 126, respectively. The twist of the stranded wire 41 is returned.
[0110]
Therefore, according to the ninth embodiment, in addition to the effects described in (1) to (4) in the respective embodiments, the following effects can be obtained.
(12) In the rubber-coated stranded wire manufacturing apparatus of this embodiment, the untwisting tool 48 is rotatably supported in an annular first rotating body 124 that is rotatably supported and in the first rotating body 124. The second rotating body 126 is supported by the second rotating body 126. Each rotating body 124, 126 is formed with a plurality of separation passage holes 127, 128 for separating and passing the plurality of strips 41a, 41b of the stranded wire 41. For this reason, even when manufacturing the rubber-coated stranded wire 59 using the stranded wire 41 formed by twisting a plurality of wires 41a and 41b into a plurality of layers, the twist of the stranded wire 41 can be reliably returned. .
(Embodiment related to tire)
Next, a tire in which the rubber-coated stranded wire 59 or the ribbon-like rubber-coated stranded wire 72 manufactured by the manufacturing apparatus of each of the embodiments is embedded as a tire reinforcing material will be described.
[0111]
As shown in FIG. 31, in the pneumatic radial tire 131, two belts 132 and 133 on the inner diameter side and the outer diameter side are embedded in the crown portion, and the body ply 134 extends from the crown portion to both side portions. It is buried. Both end portions of the body ply 134 are folded back so as to sandwich the bead wire 135 and the bead filler 136 at the bead portion. A side reinforcing ply 137 is attached to the outside of the body ply 134.
[0112]
Edge bands 138 are embedded and arranged on the outer diameter side of the belts 132 and 133, and hard rubber rings 139 having a flat cross-sectional shape with a built-in damping rubber are arranged on both ends on the inner diameter side. The belts 132 and 133 are held between the belts. Further, as shown in FIG. 31, the edge band 138 has a configuration in which it is disposed only at both ends in the width direction of the belts 132 and 133, as well as the entire width of the belts 132 and 133 as shown in FIG. There is also a configuration arranged across.
[0113]
In the radial tire 131 configured as described above, as the belts 132 and 133, for example, as shown in FIG. 33 (a), a twist made of the three metal material filaments 41a manufactured in the first embodiment is used. A ribbon-shaped rubber-coated stranded wire is used in which eight rubber-coated stranded wires 59 each having a wire 41 are provided side by side and a rubber thin film coating is applied by a rubber extruder. Further, if necessary, as shown in FIG. 33 (b), the rubber-coated stranded wires 59 including the stranded wires 41 made of the seven metal material wires 41a manufactured in the third embodiment are arranged in parallel. A ribbon-like rubber-coated stranded wire with a rubber thin film coating is used. Further, as the belts 132 and 133, a two-ply belt manufactured continuously from the manufacture of the ribbon-like rubber-covered stranded wire 72 in the fourth embodiment may be used.
[0114]
As the edge band 138, as shown in FIG. 34 (a), a rubber-coated stranded wire 59 including a stranded wire 41 made of the three polymer material filaments 41b manufactured in the second embodiment is used. used. Further, if necessary, a rubber-coated stranded wire 59 including a stranded wire 41 made of the three metal material wires 41a manufactured in the first embodiment is used. In these cases, it is preferable that deformation processing such as corrugation or coil shape is applied to the rubber-coated stranded wire 59 along the longitudinal direction. Furthermore, as the edge band 138, as shown in FIG. 34 (b), for example, a ribbon-like ply formed by arranging a plurality of hybrid filaments 140 in which polyester and nylon are combined and coated with a rubber thin film. 141 may be used.
[0115]
As the body ply 134, for example, as shown in FIGS. 35A and 35C, a stranded wire 41 made of a plurality of polymer material filaments 41b manufactured in the second or third embodiment is used. A ribbon-like rubber-covered stranded wire is used in which eight rubber-covered stranded wires 59 are provided side by side and a rubber thin film coating is applied by a rubber extruder. Moreover, as this body ply 134, the body ply continuously manufactured from the manufacture of the ribbon-like rubber-coated stranded wire 72 in the fifth embodiment may be used.
[0116]
In these cases, as the side reinforcing ply 137 attached to the body ply 134, as shown in FIG. 35 (b), a stranded wire 41 made of the polymer material filament 41b manufactured in the second embodiment is used. A rubber-coated stranded wire 59 provided with is used. The rubber-covered stranded wire 59 of the side reinforcing ply 137 may be subjected to deformation processing such as corrugation or coil shape along the longitudinal direction. In addition, when the rubber-covered stranded wire 59 obtained by deforming the side reinforcing ply 137 is used, the body ply 134 is also deformed as shown in FIGS. 36 (a) to 36 (c). It is preferable to use a rubber-coated stranded wire 59 applied.
[0117]
Further, as the body ply 134, as shown in FIGS. 37 (a) and (c), a plurality of hybrid filaments 140 subjected to deformation processing such as corrugations or a coil shape are arranged side by side to cover the rubber thin film. As shown in FIGS. 38 (a) and 38 (c), a ribbon-like ply 141 formed by arranging a plurality of linear hybrid filaments 140 in parallel and applying a rubber thin film coating is provided. Sometimes used. In these cases, as the side reinforcing ply 137, as shown in FIGS. 37 (b) and 38 (b), a deformed hybrid wire 140 or a linear hybrid wire 140 is used.
[0118]
As described above, in the pneumatic radial tire 131 of this embodiment, the rubber-coated stranded wire 59 or the ribbon-like rubber-coated stranded wire 72 manufactured by the manufacturing apparatus of each of the above embodiments is connected to the belts 132 and 133, the body ply 134, Used for edge band 138 and the like. For this reason, the composite of the wire and rubber is uniformly and integrated as a whole, and less play is produced compared to the conventional structure against external forces such as compression, tension, and twist, and the strength of the tire is improved and the operation response is improved. It is possible to improve the performance.
[0119]
Further, in this pneumatic radial tire 131, the belt 132, 133 is sandwiched between the edge band 138 and the hard rubber ring 139 having a flat triangular cross section to suppress deformation of the belt 132, 133, and the bead wire 135, etc. The bead portion reinforcing layer is arranged. For this reason, integration of a tire and a rim can be improved, and quick responsiveness can be secured. As a result, the belts 132 and 133 can be made thin, and the sidewall portion of the tire can be made thin, so that the weight of the tire can be reduced. Incidentally, as a result of experiments with 15-inch and 16-inch radial tires, it was possible to reduce the weight by about 15% to 20%.
[0120]
Further, the stability of the belts 132 and 133 can be suppressed and the integration of the tire and the rim is improved, so that the steering stability can be improved. Riding comfort can also be improved by using a rubber-coated stranded wire 59 that has been subjected to deformation processing such as corrugation or coil shape for the body ply 134, the side reinforcement ply 137, the edge band, and the like.
[0121]
(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
In the first to seventh embodiments, the number of the separation passage holes 51 and the separation passage grooves 52 on the rotating body 49 of the untwisting tool 48 is changed, and the stranded wires 41 having different numbers of the strips 41a and 41b. You may comprise so that it can respond to.
[0122]
In the eighth embodiment, the number of twisting rollers 116 to 118 constituting the twisting back tool 48 and the number of twisting rollers 119 and 120 are changed to change the twisting wires having different twisting forces. You may comprise so that it can respond to 41.
[0123]
In the ninth embodiment, the number of the separation passage holes 127 and 128 on the rotary bodies 124 and 126 of the untwisting tool 48 can be changed to correspond to the stranded wires 41 having different numbers of the strips 41a and 41b. You may comprise as follows.
[0124]
Even when configured in this manner, substantially the same effects as those of the above embodiments can be obtained.
(Other technical ideas)
The technical idea grasped from other than the claims is as follows.
[0125]
  (1) It is characterized in that a rubber thin film coating is applied to a single stranded wire to form a rubber thin film coated wire, and a plurality of the rubber thin film coated wires are juxtaposed to form a ribbon shape.RugoCoated stranded wire.
[0126]
  (2) It is characterized by using the same shape with the same cross-sectional shape over the entire length as the filament.RugoCoated stranded wire.
[0127]
Therefore, the thickness and the total length of the stranded wire are uniform over the entire length, and a high-quality tire can be realized.
In addition, in this specification, after returning the twist of the stranded wire, returning to the original twisted state is to allow the natural return to the original twisted state and to force the original twisted state. To return to the state.
[0128]
【The invention's effect】
As exemplified in the above embodiment, in the present invention, sufficient adhesion between the stranded wire and the rubber material can be ensured over a long period of time. For this reason, the tire which improved durability, maneuverability, and riding comfort is realizable.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an apparatus for producing a rubber-coated stranded wire according to a first embodiment.
2 is a perspective view showing a twist back tool in the twisted wire manufacturing apparatus of FIG. 1; FIG.
FIGS. 3A to 3D are enlarged cross-sectional views sequentially showing a process of manufacturing a rubber-coated stranded wire in the stranded wire manufacturing apparatus of FIG. 1 in a cross section taken along lines 3a-3a to 3d-3d in FIG. .
FIG. 4 is a cross-sectional view showing an apparatus for producing a rubber-coated stranded wire according to a second embodiment.
FIG. 5 is a perspective view showing a twist back tool according to a third embodiment.
FIGS. 6A to 6D are cross-sectional views sequentially showing a process of manufacturing a rubber-coated stranded wire using the untwisting tool of FIG. 5 in correspondence with FIGS. 3A to 3D. FIGS.
FIG. 7 is a front view showing an apparatus for producing a ribbon including a rubber-coated stranded wire according to a fourth embodiment.
FIG. 8 is a plan view of the ribbon manufacturing apparatus of FIG. 7;
9 is an enlarged sectional view showing a part of a rubber thin film coating chamber in the ribbon manufacturing apparatus of FIG.
10 is an enlarged longitudinal sectional view showing a preheating chamber and a drying chamber in the ribbon manufacturing apparatus of FIG.
11 is a cross-sectional view of the preheating chamber and the drying chamber of FIG.
FIGS. 12A to 12D are enlarged cross-sectional views sequentially showing a ribbon manufacturing process in the ribbon manufacturing apparatus of FIG. 7 in a cross section taken along lines 12a-12a to 12d-12d in FIGS.
13 is a front view showing a belt manufacturing apparatus for manufacturing a belt from the ribbon manufactured by the ribbon manufacturing apparatus of FIG. 7; FIG.
14 is a plan view of the belt manufacturing apparatus of FIG.
FIGS. 15A to 15C are plan views sequentially illustrating a winding drum used when manufacturing the inner diameter side belt in the belt manufacturing apparatus of FIG. 13 and the manufacturing process of the belt.
16A to 16C are plan views sequentially showing a winding drum used when manufacturing the outer diameter side belt in the belt manufacturing apparatus of FIG. 13 and the manufacturing process of the belt.
FIG. 17 is a front view showing an apparatus for producing a ribbon including a rubber-coated stranded wire according to a fifth embodiment.
18 is a plan view of the ribbon manufacturing apparatus of FIG. 17;
19 is an enlarged sectional view showing a part of a rubber thin film coating chamber in the ribbon manufacturing apparatus of FIG.
20 (a) to 20 (d) are enlarged cross-sectional views sequentially showing a ribbon manufacturing process in the ribbon manufacturing apparatus of FIG. 17 as a cross section taken along lines 20a-20a to 20d-20d in FIGS. 17 and 19;
FIG. 21 is a front view showing a ply manufacturing apparatus for manufacturing a body ply from a ribbon manufactured by the ribbon manufacturing apparatus of FIG. 17;
22 is a plan view of the ply manufacturing apparatus of FIG. 21. FIG.
FIGS. 23A and 23B are a plan view and a side view showing the manufacturing process of the body ply. FIGS.
FIGS. 24A to 24C are side views showing the manufacturing process of the body ply.
FIG. 25 is a cross-sectional view showing a rubber-coated stranded wire manufacturing apparatus according to a sixth embodiment.
FIG. 26 is a cross-sectional view showing an apparatus for manufacturing a ribbon including a rubber-coated stranded wire according to a seventh embodiment.
FIG. 27 is a cross-sectional view showing an apparatus for producing a rubber-coated stranded wire according to an eighth embodiment.
28 is a plan view of the main part of the twisted wire manufacturing apparatus in FIG. 27. FIG.
FIG. 29 is a side view showing a twist back tool according to the ninth embodiment.
30 is a cross-sectional view taken along line 30-30 in FIG. 29.
FIG. 31 is a cross-sectional view showing the structure of a tire using rubber-coated stranded wires or ribbons manufactured in each embodiment.
32 is a cross-sectional view showing the structure of a tire different from FIG. 31. FIG.
33 (a) and 33 (b) are perspective views showing an example of use of the belt in the tire of FIG. 31 or FIG. 32.
34 (a) and 34 (b) are perspective views showing an example of use of an edge band in the tire of FIG. 31 or FIG. 32.
35 (a) to 35 (c) are enlarged perspective views illustrating the structure of the portion X in FIGS. 31 and 32, and a perspective view illustrating an example of use of the side reinforcing ply and body ply in the same portion.
36 (a) to 36 (c) are enlarged perspective views illustrating other structures in the X portion of FIGS. 31 and 32, and perspective views showing examples of use of the side reinforcing ply and body ply in the same part.
FIGS. 37A to 37C are enlarged perspective views illustrating another structure in the X portion of FIGS. 31 and 32, and perspective views illustrating examples of using the side reinforcing ply and the body ply in the same part. FIGS.
FIGS. 38A to 38C are an enlarged perspective view illustrating still another structure in the X portion of FIGS. 31 and 32, and a perspective view illustrating a usage example of the side reinforcing ply and the body ply in the same portion. FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 41 ... Stranded wire, 41a, 41b ... Strip, 42 ... Preheating chamber as pretreatment means, 43 ... Rubber liquid tank as rubber supply means, 47 ... Liquid rubber, 48 ... Twisting tool, 49 ... Rotating body, 51 , 51A, 51B ... separation passage holes as separation passage portions, 52 ... separation passage grooves as separation passage portions, 53 ... rubber thin film layer, 54 ... drying chamber as post-processing means, 55 ... rubber extrusion as rubber supply means 58 ... rubber coating layer, 59 ... rubber coated stranded wire, 63 ... drive motor as rotating means, 72 ... ribbon-like rubber coated stranded wire, 73 ... inner diameter side belt, 74 ... outer diameter side belt, 75 ... belt manufacturing Mechanism 76 ... Belt forming mechanism 91 ... Ply manufacturing mechanism 92 ... Ply forming mechanism 108, 112 ... Rubber extruder as rubber supply means 116-118 ... Untwisting roller 119, 120 ... Twisting , 124... 1st rotating body, 126... 2nd rotating body, 127, 128... Separation passage hole as separation passing portion, 131... Radial tire, 132, 133. Ply, 138 ... edge band, S ... interval.

Claims (8)

A stranded wire untwisting tool for untwisting each strand of a stranded wire formed by twisting a plurality of wires,
It includes a rotatable rotary member about the axis as, the said rotary member, a plurality of separating passage portion for passage to separate each filament of said strands is formed substantially along the axial direction of the rotary body untwisting device twisted wire, characterized in that is. A stranded wire untwisting tool for untwisting each strand of a stranded wire formed by twisting a plurality of wires into a plurality of layers,
Comprising a plurality of rotating bodies rotatable about the same axis, the rotating body of the plurality, a plurality of separating passage portion for passage to separate each filament of the strand is in the axial direction of the rotary body untwisting device twisted Ri line you characterized in that it is formed substantially along. The twisting-back device for a twisted wire according to claim 1 , further comprising a rotating means for imparting rotation to the rotating body in a twisting direction of the twisted wire. A rubber supply for providing a twisted wire twist back tool according to any one of claims 1 to 3 and applying a rubber thin film coating to the outer periphery of each twisted wire on the downstream side of the twist back tool. An apparatus for producing a rubber-coated stranded wire, characterized in that means is provided. The apparatus for producing a rubber-coated stranded wire according to claim 4 , wherein pretreatment means for pretreating the stranded wire is provided upstream of the rubber supply means. The apparatus for producing a rubber-coated stranded wire according to claim 4 or 5 , wherein a post-processing means for performing post-processing on the stranded wire is provided on the downstream side of the rubber supply means. A method for producing a rubber-coated stranded wire in which a rubber coating is applied to a stranded wire formed by twisting a plurality of wires,
The strand of the stranded wire is returned by moving each strand of the stranded wire through the separation passage portion formed in the rotating body of the stranded wire twist back tool according to any one of claims 1 to 3. A method for producing a rubber-coated stranded wire, in which a predetermined interval is formed between them, and in this state, the outer periphery of each filament is coated with a rubber thin film and returned to its original twisted state. The method for producing a rubber-coated stranded wire according to claim 7 , wherein a rubber coating is applied in a state where a plurality of the stranded wires are aligned to form a ribbon shape .

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