JP6797365B2 - Cord ply joining device and joining method for tires - Google Patents

Cord ply joining device and joining method for tires Download PDF

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JP6797365B2
JP6797365B2 JP2017015105A JP2017015105A JP6797365B2 JP 6797365 B2 JP6797365 B2 JP 6797365B2 JP 2017015105 A JP2017015105 A JP 2017015105A JP 2017015105 A JP2017015105 A JP 2017015105A JP 6797365 B2 JP6797365 B2 JP 6797365B2
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cord ply
receiving member
pressurizing
ply
pressure receiving
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JP2018122465A (en
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慶 大西
慶 大西
弘志 内田
弘志 内田
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Sumitomo Rubber Industries Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/38Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114Single butt joints
    • B29C66/1142Single butt to butt joints

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Tyre Moulding (AREA)

Description

本発明は、タイヤ用のコードプライの接合装置および接合方法に関する。 The present invention relates to a cord ply joining device and joining method for tires.

コードが平行に配列されたコード配列体が未加硫ゴムにより被覆されたコードプライは、2つのコードプライの各側縁部同士、具体的には、先行するコードプライの尾端部と後続するコードプライの先端部とを重ね合わせて接合(ジョイント)することを繰り返すことにより長尺化されて、タイヤのカーカスプライ等として使用されている。 The cord ply in which the cord array in which the cords are arranged in parallel is coated with unvulcanized rubber is a cord ply that follows each side edge portion of the two cord plies, specifically, the tail end portion of the preceding cord ply. It is lengthened by repeatedly overlapping and joining the tip of the cord ply, and is used as a car vulcan ply for tires and the like.

近年、ジョイント部とそれ以外の部分との間に生じる剛性差を小さくして高性能のタイヤを提供するという観点から、オーバーラップ量(重ね合わせ量)をできるだけ小さくして精度高く接合することが提案されている(例えば、特許文献1、2など)が、重ね合わせ量をより精度高く制御して接合することにより高性能のタイヤを安定して提供するために、さらなる改善が求められている。 In recent years, from the viewpoint of providing high-performance tires by reducing the difference in rigidity that occurs between the joint part and other parts, it is possible to reduce the overlap amount (overlap amount) as much as possible and join with high accuracy. Although it has been proposed (for example, Patent Documents 1 and 2), further improvement is required in order to stably provide a high-performance tire by controlling the stacking amount with higher accuracy and joining. ..

特許4616383号公報Japanese Patent No. 4616383 特開2015―217683号公報JP-A-2015-217683

本発明は、重ね合わせ量をより精度高く制御して接合することにより高性能のタイヤを安定して提供することが可能なタイヤ用のコードプライの接合技術を提供することを課題とする。 An object of the present invention is to provide a cord ply joining technique for a tire, which can stably provide a high-performance tire by controlling the stacking amount with higher accuracy and joining.

請求項1に記載の発明は、
上方に第1加圧部材を下方に第1受圧部材を相対向して設けた第1加圧手段と、上方に第2加圧部材を下方に第2受圧部材を相対向して設けた第2加圧手段とが、相対向するように備えられていると共に、前記第1加圧部材と前記第2加圧部材、および前記第1受圧部材と前記第2受圧部材に、互いに噛み合わせ可能な噛み合わせ爪部が、それぞれ相対向して設けられているタイヤ用のコードプライの接合装置であって、
第1コードプライの尾端を前記第1コードプライの搬送位置よりも高い位置まで上昇させた前記第2受圧部材の側面に当接させることにより前記第1コードプライを位置決めする第1コードプライ位置決め機構と、
第2コードプライの先端を前記第2コードプライの搬送位置よりも低い位置まで下降させた前記第1加圧部材の側面に当接させることにより前記第2コードプライを位置決めする第2コードプライ位置決め機構とが備えられており、
前記第1加圧手段は、前記第1加圧部材が下降して、前記第1受圧部材上面に載置された第1コードプライの尾端部に押圧力を加えるように構成され、
前記第2加圧手段は、前記第2加圧部材が下降して、前記第2受圧部材上面に載置された第2コードプライの先端部に押圧力を加えるように構成されており、
さらに、前記第1加圧手段と前記第2加圧手段が互いに接近することにより、前記第1コードプライの尾端部と前記第2コードプライの先端部との重ね合わせ部にせん断力が加えられるように構成されていることを特徴とするタイヤ用のコードプライの接合装置である。
The invention according to claim 1
A first pressurizing means having a first pressurizing member on the upper side and a first pressure receiving member facing each other on the lower side, and a second pressurizing member on the upper side and a second pressure receiving member on the lower side facing each other. The two pressurizing means are provided so as to face each other, and the first pressurizing member and the second pressurizing member, and the first pressure receiving member and the second pressure receiving member can be meshed with each other. This is a cord ply joining device for tires in which the meshing claws are provided so as to face each other.
Positioning of the first cord ply that positions the first cord ply by bringing the tail end of the first cord ply into contact with the side surface of the second pressure receiving member raised to a position higher than the transport position of the first cord ply. Mechanism and
Positioning of the second cord ply that positions the second cord ply by bringing the tip of the second cord ply into contact with the side surface of the first pressurizing member lowered to a position lower than the transport position of the second cord ply. It is equipped with a mechanism
The first pressurizing means is configured so that the first pressurizing member descends and applies a pressing force to the tail end portion of the first cord ply placed on the upper surface of the first pressure receiving member.
The second pressurizing means is configured so that the second pressurizing member lowers and applies a pressing force to the tip of the second cord ply placed on the upper surface of the second pressure receiving member.
Further, when the first pressurizing means and the second pressurizing means approach each other, a shearing force is applied to the overlapping portion between the tail end portion of the first cord ply and the tip end portion of the second cord ply. It is a cord ply joining device for tires, which is characterized in that it is configured to be used.

請求項2に記載の発明は、
前記噛み合わせ爪部の噛み合わせが、前記第1加圧手段の前記第2加圧手段側への接近により行われるように構成されていることを特徴とする請求項1に記載のタイヤ用のコードプライの接合装置である。
The invention according to claim 2
The tire according to claim 1, wherein the meshing claw portion is configured to be engaged by the first pressurizing means approaching the second pressurizing means side. It is a cord ply joining device.

請求項3に記載の発明は、
前記第1加圧部材の下降、および前記第2受圧部材の上昇が、シリンダーの伸縮により行われるように構成されていることを特徴とする請求項1または請求項2に記載のタイヤ用のコードプライの接合装置である。
The invention according to claim 3
The cord for a tire according to claim 1 or 2, wherein the lowering of the first pressure-receiving member and the raising of the second pressure-receiving member are configured to be performed by expansion and contraction of a cylinder. It is a ply joining device.

請求項4に記載の発明は、
前記第1加圧部材の下降、および前記第2受圧部材の上昇が、付勢バネにより行われるように構成されていることを特徴とする請求項1または請求項2に記載のタイヤ用のコードプライの接合装置である。
The invention according to claim 4
The cord for a tire according to claim 1 or 2, wherein the lowering of the first pressure-receiving member and the raising of the second pressure-receiving member are configured to be performed by an urging spring. It is a ply joining device.

請求項5に記載の発明は、
さらに、前記第1加圧部材と前記第2加圧部材のそれぞれの先端部における間隔、および前記第1受圧部材と前記第2受圧部材のそれぞれの先端部における間隔を調整して、前記第1コードプライの尾端部と前記第2コードプライの先端部との重ね合わせ量を調整する重ね合わせ量調整機構が備えられていることを特徴とする請求項1ないし請求項4のいずれか1項に記載のタイヤ用のコードプライの接合装置である。
The invention according to claim 5
Further, the distance between the tip of the first pressure member and the tip of the second pressure member and the distance between the tip of the first pressure member and the tip of the second pressure member are adjusted to adjust the distance between the first pressure member and the second pressure member. Any one of claims 1 to 4, wherein an overlap amount adjusting mechanism for adjusting the overlap amount between the tail end portion of the cord ply and the tip end portion of the second cord ply is provided. The cord ply joining device for tires described in 1.

請求項6に記載の発明は、
前記第1加圧部材、前記第2加圧部材、前記第1受圧部材、および前記第2受圧部材に設けられた各噛み合わせ爪部の内、1つ以上の噛み合わせ爪部のコードプライとの当接面に、ローレット加工が施されていることを特徴とする請求項1ないし請求項5のいずれか1項に記載のタイヤ用のコードプライの接合装置である。
The invention according to claim 6
With the cord ply of one or more meshing claws among the first pressurizing member, the second pressurizing member, the first pressure receiving member, and each meshing claw portion provided on the second pressure receiving member. The cord ply joining device for a tire according to any one of claims 1 to 5, wherein the contact surface of the tire is knurled.

請求項7に記載の発明は、
請求項1ないし請求項6のいずれか1項に記載のタイヤ用のコードプライの接合装置を用いて行うタイヤ用のコードプライの接合方法であって、
前記第1加圧部材と前記第2加圧部材の間、前記第1受圧部材と前記第2受圧部材の間、前記第1加圧部材と前記第1受圧部材の間、前記第2加圧部材と前記第2受圧部材の間のそれぞれを開放する部材開放工程、
開放された前記第1加圧部材と前記第1受圧部材の間の隙間に、前記第1加圧手段側から逆走させてきた前記第1コードプライの尾端側を挿入する第1コードプライ挿入工程、
挿入された前記第1コードプライの尾端を、前記第1コードプライの搬送位置よりも高い位置まで上昇させた前記第2受圧部材の側面に当接させて、前記第1コードプライの尾端を位置決めする第1コードプライ位置決め工程、
尾端が位置決めされた前記第1コードプライを前記第1受圧部材上面に載置する第1コードプライ載置工程、
開放された前記第2加圧部材と前記第2受圧部材の間の隙間に、前記第2加圧手段側から搬送してきた前記第2コードプライの先端側を挿入する第2コードプライ挿入工程、
挿入された前記第2コードプライの先端を、前記第2コードプライの搬送位置よりも低い位置まで下降させた前記第1加圧部材の側面に当接させて、前記第2コードプライの先端を位置決めする第2コードプライ位置決め工程、
先端が位置決めされた前記第2コードプライを前記第2受圧部材上面に載置する第2コードプライ載置工程、
前記第1加圧部材を下降させて前記第1受圧部材との間で前記第1コードプライに押圧力を加えると共に、前記第2加圧部材を下降させて前記第2受圧部材との間で前記第2コードプライに押圧力を加えるコードプライ押圧工程、
前記コードプライ押圧工程により押圧力を加えた状態で、前記第1加圧手段と前記第2加圧手段を前記噛み合わせ爪部を噛み合わせるように互いに接近させて、前記第1コードプライの尾端部と前記第2コードプライの先端部との重ね合わせ部にせん断力を加えるせん断力付与工程を有することを特徴とするタイヤ用のコードプライの接合方法である。
The invention according to claim 7
A method for joining a cord ply for a tire, which is performed by using the cord ply joining device for a tire according to any one of claims 1 to 6.
Between the first pressurizing member and the second pressurizing member, between the first pressure receiving member and the second pressure receiving member, between the first pressurizing member and the first pressure receiving member, the second pressurizing. A member opening step of opening each of the member and the second pressure receiving member,
A first cord ply that inserts the tail end side of the first cord ply that has been run backward from the first pressurizing means side into the gap between the opened first pressurizing member and the first pressure receiving member. Insertion process,
The tail end of the inserted first cord ply is brought into contact with the side surface of the second pressure receiving member raised to a position higher than the transport position of the first cord ply, and the tail end of the first cord ply is brought into contact with the side surface. 1st code ply positioning process,
The first cord ply mounting step of mounting the first cord ply with the tail end positioned on the upper surface of the first pressure receiving member,
A second cord ply insertion step of inserting the tip end side of the second cord ply conveyed from the second pressurizing means side into the gap between the opened second pressurizing member and the second pressure receiving member.
The tip of the inserted second cord ply is brought into contact with the side surface of the first pressurizing member lowered to a position lower than the transport position of the second cord ply, and the tip of the second cord ply is brought into contact with the side surface. Second code ply positioning process for positioning,
The second cord ply mounting step of mounting the second cord ply with the tip positioned on the upper surface of the second pressure receiving member,
The first pressurizing member is lowered to apply a pressing force to the first cord ply with the first pressure receiving member, and the second pressurizing member is lowered to interact with the second pressure receiving member. A cord ply pressing step of applying pressing pressure to the second cord ply,
With the pressing force applied by the cord ply pressing step, the first pressurizing means and the second pressurizing means are brought close to each other so as to mesh the meshing claws, and the tail of the first cord ply This is a method for joining a cord ply for a tire, which comprises a shearing force applying step of applying a shearing force to an overlapping portion between an end portion and a tip portion of the second cord ply.

請求項8に記載の発明は、
前記重ね合わせ部における重ね合わせ量を、0.5〜10.0mmとすることを特徴とする請求項7に記載のタイヤ用のコードプライの接合方法である。
The invention according to claim 8 is
The method for joining a cord ply for a tire according to claim 7, wherein the overlapping amount in the overlapping portion is 0.5 to 10.0 mm.

請求項9に記載の発明は、
前記第1コードプライの尾端部と、前記第2コードプライの先端部とを加熱しながら接合することを特徴とする請求項7または請求項8に記載のタイヤ用のコードプライの接合方法である。
The invention according to claim 9
The method for joining a cord ply for a tire according to claim 7 or 8, wherein the tail end portion of the first cord ply and the tip end portion of the second cord ply are joined while heating. is there.

本発明によれば、重ね合わせ量をより精度高く制御して接合することにより高性能のタイヤを安定して提供することが可能なタイヤ用のコードプライの接合技術を提供することができる。 According to the present invention, it is possible to provide a cord ply joining technique for a tire, which can stably provide a high-performance tire by controlling the stacking amount with higher accuracy and joining.

本発明の一実施の形態に係るタイヤ用のコードプライの接合方法を説明する正面図である。It is a front view explaining the method of joining the cord ply for a tire which concerns on one Embodiment of this invention. 本発明の一実施の形態に係るタイヤ用のコードプライの接合方法を説明する正面図である。It is a front view explaining the method of joining the cord ply for a tire which concerns on one Embodiment of this invention. 本発明の一実施の形態に係るタイヤ用のコードプライの接合方法を説明する正面図である。It is a front view explaining the method of joining the cord ply for a tire which concerns on one Embodiment of this invention. 本発明の一実施の形態に係るタイヤ用のコードプライの接合方法を説明する正面図である。It is a front view explaining the method of joining the cord ply for a tire which concerns on one Embodiment of this invention. 本発明の一実施の形態に係るタイヤ用のコードプライの接合方法を説明する(a)正面図および(b)平面図である。It is (a) front view and (b) plan view explaining the method of joining the cord ply for a tire which concerns on one Embodiment of this invention. 本発明の一実施の形態に係るタイヤ用のコードプライの接合方法を説明する(a)正面図および(b)平面図である。It is (a) front view and (b) plan view explaining the method of joining the cord ply for a tire which concerns on one Embodiment of this invention. 本発明に係るタイヤ用のコードプライの接合方法を用いてコードプライを接合した場合のコードプライの重ね合わせ量の分布を示すグラフである。It is a graph which shows the distribution of the superposition amount of the cord ply when the cord ply is joined using the cord ply joining method for the tire which concerns on this invention. 従来のタイヤ用のコードプライの接合方法を用いてコードプライを接合した場合のコードプライの重ね合わせ量の分布を示すグラフである。It is a graph which shows the distribution of the superposition amount of the cord ply when the cord ply is joined by using the conventional cord ply joining method for a tire.

以下、実施の形態に基づき、本発明を具体的に説明する。 Hereinafter, the present invention will be specifically described based on the embodiments.

図1〜図6は、本実施の形態に係るタイヤ用のコードプライの接合装置を用いて行うタイヤ用のコードプライの接合方法を説明する図であり、図1から図6へと工程が進んでいくことを示している。なお、図1〜図4および図5(a)、図6(a)は正面図であり、図5(b)および図6(b)は平面図である。そして、図1〜図6において、1は第1コードプライ、2は第2コードプライ、3は第2受圧部材、4は第1受圧部材、6は第2加圧部材、7は第1加圧部材、8は噛み合わせ爪部である。 1 to 6 are views for explaining a method of joining a cord ply for a tire by using the cord ply joining device for a tire according to the present embodiment, and the process proceeds from FIG. 1 to FIG. It shows that it will go on. 1 to 4 and 5 (a) and 6 (a) are front views, and FIGS. 5 (b) and 6 (b) are plan views. Then, in FIGS. 1 to 6, 1 is a first cord ply, 2 is a second cord ply, 3 is a second pressure receiving member, 4 is a first pressure receiving member, 6 is a second pressure member, and 7 is a first pressurizing member. The pressure member, 8 is a meshing claw portion.

1.タイヤ用のコードプライの接合装置
図1〜図6に示すように、本実施の形態に係るタイヤ用のコードプライの接合装置は、上方に第1加圧部材7を下方に第1受圧部材4を相対向して設けた第1加圧手段と、上方に第2加圧部材6を下方に第2受圧部材3を相対向して設けた第2加圧手段とが、相対向するように備えられていると共に、第1加圧部材7と第2加圧部材6、および第1受圧部材4と第2受圧部材3に、互いに噛み合わせ可能な噛み合わせ爪部8が、図5(b)および図6(b)に示すように、それぞれ相対向して設けられている点においては従来のタイヤ用のコードプライの接合装置と同様である。
1. 1. Cord ply joining device for tires As shown in FIGS. 1 to 6, the cord ply joining device for tires according to the present embodiment has a first pressure member 7 upward and a first pressure receiving member 4 downward. The first pressurizing means provided so as to face each other and the second pressurizing means provided with the second pressurizing member 6 above and the second pressure receiving member 3 facing each other so as to face each other. FIG. 5 (b) shows a meshing claw portion 8 that is provided and is capable of meshing with the first pressure member 7 and the second pressure member 6, and the first pressure receiving member 4 and the second pressure receiving member 3. ) And FIG. 6 (b), they are similar to the conventional cord ply joining device for tires in that they are provided so as to face each other.

本実施の形態に係るタイヤ用のコードプライの接合装置は、第1コードプライ1の尾端を第1コードプライ1の搬送位置よりも高い位置まで上昇させた第2受圧部材3の側面に当接させることにより第1コードプライ1を位置決めする第1コードプライ位置決め機構と、第2コードプライ2の先端を第2コードプライ2の搬送位置よりも低い位置まで下降させた第1加圧部材7の側面に当接させることにより第2コードプライ2を位置決めする第2コードプライ位置決め機構とが備えられている点において、従来のタイヤ用のコードプライの接合装置と異なっている。 The cord ply joining device for a tire according to the present embodiment hits the side surface of the second pressure receiving member 3 in which the tail end of the first cord ply 1 is raised to a position higher than the transport position of the first cord ply 1. A first cord ply positioning mechanism that positions the first cord ply 1 by contacting the first cord ply, and a first pressurizing member 7 in which the tip of the second cord ply 2 is lowered to a position lower than the transport position of the second cord ply 2. It differs from the conventional cord ply joining device for tires in that it is provided with a second cord ply positioning mechanism that positions the second cord ply 2 by abutting on the side surface of the tire.

そして、本実施の形態においては、第1加圧手段は第1加圧部材7が下降して、第1受圧部材4上面に載置された第1コードプライ1の尾端部に押圧力を加えるように構成され、第2加圧手段は第2加圧部材6が下降して、第2受圧部材3上面に載置された第2コードプライ2の先端部に押圧力を加えるように構成されている。 Then, in the present embodiment, in the first pressurizing means, the first pressurizing member 7 is lowered to apply a pressing force to the tail end portion of the first cord ply 1 placed on the upper surface of the first pressure receiving member 4. The second pressurizing means is configured to apply, and the second pressurizing member 6 is lowered to apply a pressing force to the tip of the second cord ply 2 placed on the upper surface of the second pressure receiving member 3. Has been done.

そして、さらに、本実施の形態においては、第1加圧手段と第2加圧手段が互いに接近することにより、第1コードプライ1の尾端部と第2コードプライ2の先端部との重ね合わせ部にせん断力が加えられるように構成されている。 Further, in the present embodiment, the first pressurizing means and the second pressurizing means approach each other so that the tail end portion of the first cord ply 1 and the tip end portion of the second cord ply 2 are overlapped with each other. It is configured so that a shearing force is applied to the mating part.

なお、上記した本実施の形態において、噛み合わせ爪部の噛み合わせは、第1加圧手段の第2加圧手段側への接近により行われるようにしてもよい。 In the present embodiment described above, the meshing of the meshing claws may be performed by approaching the second pressurizing means side of the first pressurizing means.

そして、第1加圧部材7の下降、および第2受圧部材3の上昇は、シリンダーの伸縮や付勢バネにより行われることが好ましい。 Then, it is preferable that the first pressure member 7 is lowered and the second pressure receiving member 3 is raised by the expansion and contraction of the cylinder and the urging spring.

また、本実施の形態においては、第1加圧部材7と第2加圧部材6のそれぞれの先端部における間隔、および第1受圧部材4と第2受圧部材3のそれぞれの先端部における間隔を調整して、第1コードプライ1の尾端部と第2コードプライ2の先端部との重ね合わせ量を調整する重ね合わせ量調整機構が備えられていることが好ましく、これにより、2つのコードプライの重ね合わせ部における重ね合わせ量を自在に調整することができる。 Further, in the present embodiment, the distance between the tips of the first pressure member 7 and the second pressure member 6 and the distance between the tips of the first pressure member 4 and the second pressure member 3 are set. It is preferable that a superposition amount adjusting mechanism for adjusting the amount of superposition between the tail end portion of the first cord ply 1 and the tip end portion of the second cord ply 2 is provided, thereby providing two cords. The amount of superposition in the superimposition portion of the ply can be freely adjusted.

また、本実施の形態においては、第1加圧部材7、第2加圧部材6、第1受圧部材4、および第2受圧部材3に設けられた各噛み合わせ爪部の内、1つ以上の噛み合わせ爪部のコードプライとの当接面に、ローレット加工が施されていることが好ましく、これにより、載置されたコードプライを安定して保持して接合することができる。 Further, in the present embodiment, one or more of the meshing claws provided on the first pressure member 7, the second pressure member 6, the first pressure receiving member 4, and the second pressure receiving member 3. It is preferable that the contact surface of the meshing claw portion with the cord ply is knurled, whereby the mounted cord ply can be stably held and joined.

そして、各加圧部材および受圧部材としては、硬度の高い金属製部材が好ましい。具体的には、ビッカース硬度(Hv)が200以上の金属、例えばS45C以上の鉄製部材が好ましい。 As each pressure member and pressure receiving member, a metal member having high hardness is preferable. Specifically, a metal having a Vickers hardness (Hv) of 200 or more, for example, an iron member having S45C or more is preferable.

また、個々の噛み合わせ爪部8における各爪の大きさとしては、底部の幅が5〜15mm、先端部の幅が底部の幅の40〜100%であることが好ましく、高さとしては底部の幅の100〜150%が好ましい。底部の幅が15mmを超えると、均一な噛み合わせが困難となり、局部的な噛み合わせ不良が発生する恐れがある。また、5mm未満であると、爪の個数が多くなるため、噛み合わせ爪部8を設ける切削加工が難しくなり、加工コストが上昇する。 Further, the size of each claw in each meshing claw portion 8 is preferably such that the width of the bottom portion is 5 to 15 mm, the width of the tip portion is 40 to 100% of the width of the bottom portion, and the height is the bottom portion. It is preferably 100 to 150% of the width of. If the width of the bottom exceeds 15 mm, uniform meshing becomes difficult, and local meshing failure may occur. Further, if it is less than 5 mm, the number of claws increases, so that the cutting process for providing the meshing claw portion 8 becomes difficult, and the processing cost increases.

2.タイヤ用のコードプライの接合方法
次に、上記した構造のタイヤ用のコードプライの接合装置を用いて行うタイヤ用のコードプライの接合方法について説明する。本実施の形態においては、前記したように、図1から図6へと工程が進んでいく。以下、工程毎に説明する。
2. 2. Method of joining cord plies for tires Next, a method of joining cord plies for tires using the cord ply joining device for tires having the above structure will be described. In the present embodiment, as described above, the process proceeds from FIG. 1 to FIG. Hereinafter, each step will be described.

(1)部材開放工程
コードプライの接合に先立って、第1加圧部材7と第2加圧部材6の間、第1受圧部材4と第2受圧部材3の間、第1加圧部材7と第1受圧部材4の間、第2加圧部材6と第2受圧部材3の間のそれぞれを開放する。
(1) Member Opening Process Prior to joining the cord ply, the first pressurizing member 7 is between the first pressurizing member 7 and the second pressurizing member 6, between the first pressurizing member 4 and the second pressurizing member 3. And between the first pressure receiving member 4 and between the second pressure receiving member 6 and the second pressure receiving member 3, respectively.

図1は、各部材が開放されて、第1コードプライ1がタイヤ用のコードプライの接合装置から送り出された後の状態を示しており、第1コードプライ1は、タイヤ用のコードプライの接合装置から太矢印方向に送り出された後、所定の距離離れた位置まで搬送されて停止している。 FIG. 1 shows a state after each member is opened and the first cord ply 1 is sent out from the cord ply joining device for the tire, and the first cord ply 1 is the cord ply for the tire. After being sent out from the joining device in the direction of the thick arrow, it is transported to a position separated by a predetermined distance and stopped.

その後、第2受圧部材3を伸長させて第1コードプライ1の搬送位置よりも高い位置まで上昇させると共に、第1加圧部材7を伸長させて第2コードプライ2の搬送位置よりも低い位置まで下降させる。 After that, the second pressure receiving member 3 is extended to be raised to a position higher than the transport position of the first cord ply 1, and the first pressurizing member 7 is extended to a position lower than the transport position of the second cord ply 2. Lower to.

(2)第1コードプライ挿入工程
次に、停止していた第1コードプライ1を第1加圧手段側から逆走させて、開放された第1加圧部材7と第1受圧部材4の間の隙間に、第1コードプライ1の尾端側を挿入する。
(2) First cord ply insertion step Next, the stopped first cord ply 1 is run backward from the first pressurizing means side, and the opened first pressurizing member 7 and the first pressure receiving member 4 Insert the tail end side of the first cord ply 1 into the gap between them.

(3)第1コードプライ位置決め工程
挿入された第1コードプライ1の尾端が、図2に示すように、第1コードプライの搬送位置よりも高い位置に上昇させた第2受圧部材3の側面に当接すると、その時点で、第1コードプライ1の搬送を停止させる。これにより、第1コードプライ1の尾端が所定の位置で位置決めされる。
(3) First cord ply positioning step As shown in FIG. 2, the tail end of the inserted first cord ply 1 is raised to a position higher than the transport position of the first cord ply of the second pressure receiving member 3. When it comes into contact with the side surface, the transport of the first cord ply 1 is stopped at that point. As a result, the tail end of the first cord ply 1 is positioned at a predetermined position.

(4)第1コードプライ載置工程
その後、図3に示すように、第1加圧部材7を若干下降させて第1コードプライ1を軽く下方に押し込むことにより、第1コードプライ1の尾端部を第1受圧部材4上に載置させる。このとき、第1コードプライ1の尾端は、第1受圧部材4から突出した位置にあり、この突出した部分が重ね合わせ部を形成する。
(4) First Cord Ply Placement Step After that, as shown in FIG. 3, the tail of the first cord ply 1 is formed by slightly lowering the first pressurizing member 7 and gently pushing the first cord ply 1 downward. The end portion is placed on the first pressure receiving member 4. At this time, the tail end of the first cord ply 1 is located at a position protruding from the first pressure receiving member 4, and this protruding portion forms an overlapping portion.

(5)第2コードプライ挿入工程
次に、第1受圧部材4上に第1コードプライ1の尾端部を載置させた状態のまま、図4に示すように、開放された第2加圧部材6と第2受圧部材3の間の隙間に、第2加圧手段側から搬送してきた第2コードプライ2の先端側を挿入する。
(5) Second Cord Ply Inserting Step Next, as shown in FIG. 4, the open second addition is performed with the tail end portion of the first cord ply 1 placed on the first pressure receiving member 4. The tip end side of the second cord ply 2 conveyed from the second pressurizing means side is inserted into the gap between the pressure member 6 and the second pressure receiving member 3.

(6)第2コードプライ位置決め工程
挿入された第2コードプライ2の先端が、図4に示すように、第2コードプライの搬送位置よりも低い位置まで下降させた第1加圧部材7の側面に当接すると、その時点で、第2コードプライ2の搬送を停止させる。これにより、第2コードプライ2の先端が所定の位置で位置決めされる。
(6) Second Cord Ply Positioning Step As shown in FIG. 4, the tip of the inserted second cord ply 2 of the first pressurizing member 7 is lowered to a position lower than the transport position of the second cord ply. When it comes into contact with the side surface, the transfer of the second cord ply 2 is stopped at that point. As a result, the tip of the second cord ply 2 is positioned at a predetermined position.

(7)第2コードプライ載置工程
その後、第2加圧部材6を若干下降させて第2コードプライ2を軽く下方に押し込むことにより、第2コードプライ2の先端部を第2受圧部材3上に載置させる。このとき、第2コードプライ2の先端は、第2受圧部材3から突出した位置にあり、この突出した部分が重ね合わせ部を形成する。
(7) Second cord ply mounting step After that, the second cord ply 6 is slightly lowered and the second cord ply 2 is lightly pushed downward to push the tip of the second cord ply 2 into the second pressure receiving member 3. Place it on top. At this time, the tip of the second cord ply 2 is at a position protruding from the second pressure receiving member 3, and this protruding portion forms an overlapping portion.

(8)コードプライ押圧工程
次に、第1加圧部材7を下降させて第1受圧部材4との間で第1コードプライ1に押圧力を加えると共に、第2加圧部材6を下降させて第2受圧部材3との間で第2コードプライ2に押圧力を加えて、図5(a)に示すように、第1加圧部材7と第1受圧部材4の合わせ面と、第2加圧部材6と第2受圧部材3の合わせ面とが面一となるように押圧する。このとき、第1加圧手段および第2加圧手段における噛み合わせ爪部8は、図5(b)に示すように、未だ、互いに噛み合わされてはいない。
(8) Cord ply pressing step Next, the first pressurizing member 7 is lowered to apply pressing force to the first cord ply 1 with the first pressure receiving member 4, and the second pressurizing member 6 is lowered. Then, a pressing force is applied to the second cord ply 2 with the second pressure receiving member 3, and as shown in FIG. 5A, the mating surface of the first pressing member 7 and the first pressure receiving member 4 and the first 2 Press so that the mating surfaces of the pressurizing member 6 and the second pressure receiving member 3 are flush with each other. At this time, the meshing claws 8 in the first pressurizing means and the second pressurizing means are not yet meshed with each other as shown in FIG. 5 (b).

(9)せん断力付与工程
次に、図6に示すように、前記したコードプライ押圧工程により押圧力を加えた状態で、第1加圧手段と第2加圧手段を噛み合わせ爪部8を噛み合わせるように互いに接近させる。これにより、開放されていた第1加圧部材7と第2加圧部材6との間、および第1受圧部材4と第2受圧部材3との間が閉じて、従来と同様に、第1加圧手段と第2加圧手段との隙間に形成されていた重ね合わせ部に横方向のせん断力が掛かり、第1コードプライ1と第2コードプライ2との接合が行われる。
(9) Shear force applying step Next, as shown in FIG. 6, the first pressurizing means and the second pressurizing means are engaged with each other in a state where the pressing force is applied by the cord ply pressing step described above to engage the claw portion 8. Bring them closer to each other so that they mesh with each other. As a result, the open space between the first pressure member 7 and the second pressure member 6 and the space between the first pressure receiving member 4 and the second pressure receiving member 3 are closed, and the first pressure receiving member 4 and the second pressure receiving member 3 are closed as in the conventional case. A lateral shearing force is applied to the overlapping portion formed in the gap between the pressurizing means and the second pressurizing means, and the first cord ply 1 and the second cord ply 2 are joined.

このとき、重ね合わせ部における重ね合わせ量は、0.5〜10.0mmとすることが好ましい。0.5mm未満であると、後工程において重ね合わせ部が分離してくる恐れがある。一方、10.0mmを超えると、重ね合わせ部におけるコード密度が高くなり、タイヤにおけるユニフォミティの低下を招く恐れがある。 At this time, the overlapping amount in the overlapping portion is preferably 0.5 to 10.0 mm. If it is less than 0.5 mm, the overlapped portion may be separated in the subsequent process. On the other hand, if it exceeds 10.0 mm, the cord density in the overlapped portion becomes high, which may lead to a decrease in uniformity in the tire.

そして、本実施の形態においては、重ね合わせ量を精度高く制御することができるため、位置決めサイクルの悪化を招くことがない。 Further, in the present embodiment, since the overlay amount can be controlled with high accuracy, the positioning cycle is not deteriorated.

なお、この接合に際しては、加熱しながら行うと、コードプライのゴムが軟化してより効果的に押圧力やせん断力がコードプライの接合に際して作用するため、より一体化させてより強固な接合を得ることができる。好ましい加熱温度は60〜120℃である。 When this joining is performed while heating, the rubber of the cord ply softens and the pressing force and shearing force act more effectively when joining the cord ply, so that the cord ply is more integrated and stronger. Obtainable. The preferred heating temperature is 60-120 ° C.

3.本実施の形態による効果
本実施の形態に係るタイヤ用のコードプライの接合装置を用いてコードプライの接合を行った場合、重ね合わせ部の形成に際して、第1コードプライ1の尾端の位置は第2受圧部材3の側面によって固定され、第2コードプライ2の先端の位置は第1加圧部材7の側面によって固定されているため、第1加圧手段および第2加圧手段による押圧が行われるまで、第1コードプライの尾端と第2コードプライの先端は位置決めされた状態のまま保持されて、第1コードプライの尾端部と第2コードプライの先端部との重ね合わせ部における重ね合わせ量にバラツキが発生せず、精度高く制御することができる。
3. 3. Effect of the present embodiment When the cord ply is joined using the cord ply joining device for the tire according to the present embodiment, the position of the tail end of the first cord ply 1 is changed when the overlapping portion is formed. Since it is fixed by the side surface of the second pressure receiving member 3 and the position of the tip of the second cord ply 2 is fixed by the side surface of the first pressurizing member 7, the pressing by the first pressurizing means and the second pressurizing means is performed. Until this is done, the tail end of the first cord ply and the tip of the second cord ply are held in a positioned state, and the overlapping portion between the tail end of the first cord ply and the tip of the second cord ply. There is no variation in the amount of superposition in the above, and it is possible to control with high accuracy.

そして、本実施の形態においては、重ね合わせ量が精度高く制御された状態で、第1加圧手段と第2加圧手段が互いに接近することにより、この重ね合わせ部にせん断力を掛けて接合するため、重ね合わせ量のバラツキが小さく精度高く接合されたコードプライを提供でき、プライ尾端ストッパを使用して第1コードプライの尾端の位置合わせは行うものの第2コードプライの先端部との重ね合わせに際してはプライ尾端ストッパを除いていたために、重ね合わせ量のバラツキを十分に制御できなかった従来のタイヤ用のコードプライの接合装置と異なり、高性能のタイヤを安定して提供することができる。 Then, in the present embodiment, the first pressurizing means and the second pressurizing means approach each other in a state where the superimposing amount is controlled with high accuracy, so that a shearing force is applied to the superposed portion for joining. Therefore, it is possible to provide a cord ply that is joined with high accuracy with little variation in the amount of overlap, and although the tail end of the first cord ply is aligned using the ply tail end stopper, it is aligned with the tip of the second cord ply. Unlike the conventional cord ply joining device for tires, which could not sufficiently control the variation in the amount of superposition because the ply tail end stopper was removed when superimposing the tires, high-performance tires are stably provided. be able to.

以下、実施例および比較例に基づいて、本発明を具体的に説明する。 Hereinafter, the present invention will be specifically described based on Examples and Comparative Examples.

1.コードプライの製造
(1)実施例
PET1670dtex/2を縦糸としてエンズ50本/5cmで配置して、厚み1.00mm、幅600mmのコードプライを作製した後、上記した本実施の形態に係るタイヤ用のコードプライの接合装置を用い、重ね合わせ部の重ね合わせ量が3.0mmとなるように調整して、コードプライの接合を30回行って、実施例のコードプライを製造した。
1. 1. Manufacture of Cord Ply (1) Example PET1670dtex / 2 is arranged as warp threads with 50 ends / 5 cm to produce a cord ply having a thickness of 1.00 mm and a width of 600 mm, and then for a tire according to the above embodiment. The cord ply of the example was manufactured by using the cord ply joining device of the above method, adjusting the overlapping amount of the overlapped portion to be 3.0 mm, and joining the cord ply 30 times.

(2)比較例
従来のタイヤ用のコードプライの接合装置を用いたこと以外は、実施例と同様にして比較例のコードプライを製造した。
(2) Comparative Example The cord ply of the comparative example was manufactured in the same manner as in the example except that the conventional cord ply joining device for the tire was used.

2.評価
実施例および比較例で得られたコードプライの接合位置30箇所における重ね合わせ部の重ね合わせ量を実測し、その平均と標準偏差を求めた。
2. 2. Evaluation The amount of superposition of the superimposing portions at 30 joint positions of the cord plies obtained in the examples and comparative examples was actually measured, and the average and standard deviation were obtained.

結果を表1に示すと共に、測定値の分布を図7(実施例)および図8(比較例)に示す。 The results are shown in Table 1, and the distribution of the measured values is shown in FIGS. 7 (Example) and 8 (Comparative Example).

Figure 0006797365
Figure 0006797365

図7および図8からも明らかなように、比較例では測定結果が3.0〜5.6mmと幅広く分散しているのに対して、実施例では2.6〜3.8mmと狭い範囲で収まっている。 As is clear from FIGS. 7 and 8, the measurement results are widely dispersed in the comparative example as 3.0 to 5.6 mm, whereas in the example, the measurement results are as narrow as 2.6 to 3.8 mm. It fits.

そして、表1からも、平均値について実施例では3.17mmと目標値に近い値であるのに対して、比較例では4.27mmとかなり離れていることが分かる。また、標準偏差は、実施例では0.288mmであり、比較例の0.691の半分以下に収まっており、精度の高い接合ができていることが分かる。 It can also be seen from Table 1 that the average value is 3.17 mm in the example, which is close to the target value, while it is 4.27 mm, which is considerably different in the comparative example. Further, the standard deviation is 0.288 mm in the example, which is less than half of 0.691 in the comparative example, and it can be seen that the joining is highly accurate.

以上、本発明を実施の形態に基づいて説明したが、本発明は上記の実施の形態に限定されるものではない。本発明と同一および均等の範囲内において、上記の実施の形態に対して種々の変更を加えることができる。 Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above embodiments within the same and equivalent scope as the present invention.

1 第1コードプライ
2 第2コードプライ
3 第2受圧部材
4 第1受圧部材
6 第2加圧部材
7 第1加圧部材
8 噛み合わせ爪部
1 1st cord ply 2 2nd cord ply 3 2nd pressure receiving member 4 1st pressure receiving member 6 2nd pressure member 7 1st pressure member 8 meshing claw portion

Claims (9)

上方に第1加圧部材を下方に第1受圧部材を相対向して設けた第1加圧手段と、上方に第2加圧部材を下方に第2受圧部材を相対向して設けた第2加圧手段とが、相対向するように備えられていると共に、前記第1加圧部材と前記第2加圧部材、および前記第1受圧部材と前記第2受圧部材に、互いに噛み合わせ可能な噛み合わせ爪部が、それぞれ相対向して設けられているタイヤ用のコードプライの接合装置であって、
第1コードプライの尾端を前記第1コードプライの搬送位置よりも高い位置まで上昇させた前記第2受圧部材の側面に当接させることにより前記第1コードプライを位置決めする第1コードプライ位置決め機構と、
第2コードプライの先端を前記第2コードプライの搬送位置よりも低い位置まで下降させた前記第1加圧部材の側面に当接させることにより前記第2コードプライを位置決めする第2コードプライ位置決め機構とが備えられており、
前記第1加圧手段は、前記第1加圧部材が下降して、前記第1受圧部材上面に載置された第1コードプライの尾端部に押圧力を加えるように構成され、
前記第2加圧手段は、前記第2加圧部材が下降して、前記第2受圧部材上面に載置された第2コードプライの先端部に押圧力を加えるように構成されており、
さらに、前記第1加圧手段と前記第2加圧手段が互いに接近することにより、前記第1コードプライの尾端部と前記第2コードプライの先端部との重ね合わせ部にせん断力が加えられるように構成されていることを特徴とするタイヤ用のコードプライの接合装置。
A first pressurizing means having a first pressurizing member on the upper side and a first pressure receiving member facing each other on the lower side, and a second pressurizing member on the upper side and a second pressure receiving member on the lower side facing each other. The two pressurizing means are provided so as to face each other, and the first pressurizing member and the second pressurizing member, and the first pressure receiving member and the second pressure receiving member can be meshed with each other. This is a cord ply joining device for tires in which the meshing claws are provided so as to face each other.
Positioning of the first cord ply that positions the first cord ply by bringing the tail end of the first cord ply into contact with the side surface of the second pressure receiving member raised to a position higher than the transport position of the first cord ply. Mechanism and
Positioning of the second cord ply that positions the second cord ply by bringing the tip of the second cord ply into contact with the side surface of the first pressurizing member lowered to a position lower than the transport position of the second cord ply. It is equipped with a mechanism
The first pressurizing means is configured so that the first pressurizing member descends and applies a pressing force to the tail end portion of the first cord ply placed on the upper surface of the first pressure receiving member.
The second pressurizing means is configured so that the second pressurizing member lowers and applies a pressing force to the tip of the second cord ply placed on the upper surface of the second pressure receiving member.
Further, when the first pressurizing means and the second pressurizing means approach each other, a shearing force is applied to the overlapping portion between the tail end portion of the first cord ply and the tip end portion of the second cord ply. A cord ply joining device for tires, characterized in that it is configured to be.
前記噛み合わせ爪部の噛み合わせが、前記第1加圧手段の前記第2加圧手段側への接近により行われるように構成されていることを特徴とする請求項1に記載のタイヤ用のコードプライの接合装置。 The tire according to claim 1, wherein the meshing claw portion is configured to be engaged by the first pressurizing means approaching the second pressurizing means side. Cord ply joining device. 前記第1加圧部材の下降、および前記第2受圧部材の上昇が、シリンダーの伸縮により行われるように構成されていることを特徴とする請求項1または請求項2に記載のタイヤ用のコードプライの接合装置。 The cord for a tire according to claim 1 or 2, wherein the lowering of the first pressure-receiving member and the raising of the second pressure-receiving member are configured to be performed by expansion and contraction of a cylinder. Ply joining device. 前記第1加圧部材の下降、および前記第2受圧部材の上昇が、付勢バネにより行われるように構成されていることを特徴とする請求項1または請求項2に記載のタイヤ用のコードプライの接合装置。 The cord for a tire according to claim 1 or 2, wherein the lowering of the first pressure-receiving member and the raising of the second pressure-receiving member are configured to be performed by an urging spring. Ply joining device. さらに、前記第1加圧部材と前記第2加圧部材のそれぞれの先端部における間隔、および前記第1受圧部材と前記第2受圧部材のそれぞれの先端部における間隔を調整して、前記第1コードプライの尾端部と前記第2コードプライの先端部との重ね合わせ量を調整する重ね合わせ量調整機構が備えられていることを特徴とする請求項1ないし請求項4のいずれか1項に記載のタイヤ用のコードプライの接合装置。 Further, the distance between the tip of the first pressure member and the tip of the second pressure member and the distance between the tip of the first pressure member and the tip of the second pressure member are adjusted to adjust the distance between the first pressure member and the second pressure member. Any one of claims 1 to 4, wherein an overlap amount adjusting mechanism for adjusting the overlap amount between the tail end portion of the cord ply and the tip end portion of the second cord ply is provided. Cord ply joining device for tires as described in. 前記第1加圧部材、前記第2加圧部材、前記第1受圧部材、および前記第2受圧部材に設けられた各噛み合わせ爪部の内、1つ以上の噛み合わせ爪部のコードプライとの当接面に、ローレット加工が施されていることを特徴とする請求項1ないし請求項5のいずれか1項に記載のタイヤ用のコードプライの接合装置。 With the cord ply of one or more meshing claws among the first pressurizing member, the second pressurizing member, the first pressure receiving member, and each meshing claw portion provided on the second pressure receiving member. The cord ply joining device for a tire according to any one of claims 1 to 5, wherein the contact surface of the tire is knurled. 請求項1ないし請求項6のいずれか1項に記載のタイヤ用のコードプライの接合装置を用いて行うタイヤ用のコードプライの接合方法であって、
前記第1加圧部材と前記第2加圧部材の間、前記第1受圧部材と前記第2受圧部材の間、前記第1加圧部材と前記第1受圧部材の間、前記第2加圧部材と前記第2受圧部材の間のそれぞれを開放する部材開放工程、
開放された前記第1加圧部材と前記第1受圧部材の間の隙間に、前記第1加圧手段側から逆走させてきた前記第1コードプライの尾端側を挿入する第1コードプライ挿入工程、
挿入された前記第1コードプライの尾端を、前記第1コードプライの搬送位置よりも高い位置まで上昇させた前記第2受圧部材の側面に当接させて、前記第1コードプライの尾端を位置決めする第1コードプライ位置決め工程、
尾端が位置決めされた前記第1コードプライを前記第1受圧部材上面に載置する第1コードプライ載置工程、
開放された前記第2加圧部材と前記第2受圧部材の間の隙間に、前記第2加圧手段側から搬送してきた前記第2コードプライの先端側を挿入する第2コードプライ挿入工程、
挿入された前記第2コードプライの先端を、前記第2コードプライの搬送位置よりも低い位置まで下降させた前記第1加圧部材の側面に当接させて、前記第2コードプライの先端を位置決めする第2コードプライ位置決め工程、
先端が位置決めされた前記第2コードプライを前記第2受圧部材上面に載置する第2コードプライ載置工程、
前記第1加圧部材を下降させて前記第1受圧部材との間で前記第1コードプライに押圧力を加えると共に、前記第2加圧部材を下降させて前記第2受圧部材との間で前記第2コードプライに押圧力を加えるコードプライ押圧工程、
前記コードプライ押圧工程により押圧力を加えた状態で、前記第1加圧手段と前記第2加圧手段を前記噛み合わせ爪部を噛み合わせるように互いに接近させて、前記第1コードプライの尾端部と前記第2コードプライの先端部との重ね合わせ部にせん断力を加えるせん断力付与工程を有することを特徴とするタイヤ用のコードプライの接合方法。
A method for joining a cord ply for a tire, which is performed by using the cord ply joining device for a tire according to any one of claims 1 to 6.
Between the first pressurizing member and the second pressurizing member, between the first pressure receiving member and the second pressure receiving member, between the first pressurizing member and the first pressure receiving member, the second pressurizing. A member opening step of opening each of the member and the second pressure receiving member,
A first cord ply that inserts the tail end side of the first cord ply that has been run backward from the first pressurizing means side into the gap between the opened first pressurizing member and the first pressure receiving member. Insertion process,
The tail end of the inserted first cord ply is brought into contact with the side surface of the second pressure receiving member raised to a position higher than the transport position of the first cord ply, and the tail end of the first cord ply is brought into contact with the side surface. 1st code ply positioning process,
The first cord ply mounting step of mounting the first cord ply with the tail end positioned on the upper surface of the first pressure receiving member,
A second cord ply insertion step of inserting the tip end side of the second cord ply conveyed from the second pressurizing means side into the gap between the opened second pressurizing member and the second pressure receiving member.
The tip of the inserted second cord ply is brought into contact with the side surface of the first pressurizing member lowered to a position lower than the transport position of the second cord ply, and the tip of the second cord ply is brought into contact with the side surface. Second code ply positioning process for positioning,
The second cord ply mounting step of mounting the second cord ply with the tip positioned on the upper surface of the second pressure receiving member,
The first pressurizing member is lowered to apply a pressing force to the first cord ply with the first pressure receiving member, and the second pressurizing member is lowered to interact with the second pressure receiving member. A cord ply pressing step of applying pressing pressure to the second cord ply,
With the pressing force applied by the cord ply pressing step, the first pressurizing means and the second pressurizing means are brought close to each other so as to mesh the meshing claws, and the tail of the first cord ply A method for joining a cord ply for a tire, which comprises a shearing force applying step of applying a shearing force to an overlapping portion between an end portion and a tip portion of the second cord ply.
前記重ね合わせ部における重ね合わせ量を、0.5〜10.0mmとすることを特徴とする請求項7に記載のタイヤ用のコードプライの接合方法。 The method for joining a cord ply for a tire according to claim 7, wherein the overlapping amount in the overlapping portion is 0.5 to 10.0 mm. 前記第1コードプライの尾端部と、前記第2コードプライの先端部とを加熱しながら接合することを特徴とする請求項7または請求項8に記載のタイヤ用のコードプライの接合方法。 The method for joining a cord ply for a tire according to claim 7, wherein the tail end portion of the first cord ply and the tip end portion of the second cord ply are joined while heating.
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