JP2003033977A - Method and device for controlling bladder outside diameter in tire production process - Google Patents
Method and device for controlling bladder outside diameter in tire production processInfo
- Publication number
- JP2003033977A JP2003033977A JP2001224507A JP2001224507A JP2003033977A JP 2003033977 A JP2003033977 A JP 2003033977A JP 2001224507 A JP2001224507 A JP 2001224507A JP 2001224507 A JP2001224507 A JP 2001224507A JP 2003033977 A JP2003033977 A JP 2003033977A
- Authority
- JP
- Japan
- Prior art keywords
- bladder
- outer diameter
- bladders
- pair
- turn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
- B29D2030/3221—Folding over means, e.g. bladders or rigid arms
- B29D2030/3242—Folding over means, e.g. bladders or rigid arms and with means for pressing the bladder against the ply material, e.g. bladder guide shoes, cages, arms
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、タイヤ製造工程
におけるブラダー外径制御方法及びその装置に係わり、
更に詳しくはフルステップ成形方式のラジアルタイヤシ
ェーピング工程におけるブラダー外径制御方法及びその
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bladder outer diameter control method and device in a tire manufacturing process,
More specifically, the present invention relates to a bladder outer diameter control method and apparatus in a radial tire shaping process of a full step molding method.
【０００２】[0002]
【従来の技術】従来、ラジアルタイヤ第１段成形工程に
おけるフルステップ成形方式のグリーンタイヤのシェー
ピング工程では、図４（ａ）〜（ｃ）の正常状態に示す
ように、ビード１に保持されたカーカス材２上にベルト
３，キャップトレッド４等のタイヤ構成材料を配設して
構成して成るケーシング５に対して、左右一対のターン
ナップブラダー６ａ，６ｂを用いて前記タイヤ構成材料
及びサイドトレッド７等の材料をロールオーバー（ター
ンナップ）させ、この状態でロールオーバーリング８
（またはプッシャーリングとも言う）を介して前記ケー
シング５の側面に貼付けることによりグリーンタイヤ
（未加硫タイヤ）を完成させている。2. Description of the Related Art Conventionally, in a shaping step of a green tire of a full-step molding method in a first stage molding step of a radial tire, a bead 1 is held as shown in a normal state of FIGS. The tire constituent material and the side tread using a pair of left and right turn-up bladders 6a and 6b for a casing 5 formed by arranging a tire constituent material such as a belt 3 and a cap tread 4 on a carcass material 2. Roll over (turn-up) the material such as 7 and roll over ring 8 in this state
A green tire (unvulcanized tire) is completed by being attached to the side surface of the casing 5 via (or also referred to as a pusher ring).
【０００３】[0003]
【発明が解決しようとする課題】然しながら、左右一対
のターンナップブラダー６ａ，６ｂの膨らみ加減は、空
気等のブラダー膨張媒体Ｑの供給圧力と、供給時間とで
調整しているため、ターンナップ（折り返し）されるサ
イドトレッド７等の材料の剛性差や、ターンナップブラ
ダー６ａ，６ｂの経年変化、左右ブラダーの交換時期の
差、及びブラダー製造のバラツキ差等の膨らみ量の変化
等の具体的な膨らみ要素に対しては、膨らみ具合の調整
を左右独立に実施していないのが現状である。However, the swelling of the pair of left and right turn-up bladders 6a, 6b is adjusted by the supply pressure of the bladder expansion medium Q such as air and the supply time. Specific differences such as the rigidity difference of the materials such as the side tread 7 that are folded back), the change over time of the turn-up bladders 6a and 6b, the difference between the left and right bladder replacement times, and the difference in the amount of bulge such as the difference in bladder manufacturing variations. With respect to the bulge element, the condition of bulge is not adjusted independently on the left and right.
【０００４】このため、図５（ａ）〜（ｃ）の異常状態
に示すように、左右のターンナップブラダー６ａ，６ｂ
の外径差ｔや、ブラダー規定外径までの速度による到達
時間差が、膨張したターンナップブラダー６ａ，６ｂか
らサイドトレッド７の滑り落ち具合を変化させ、この結
果、サイドトレッド７のターンナップハイト位置Ｌが安
定せず、このようなグリーンタイヤにより成形された加
硫タイヤはユニフォミティー（Lateral Force Variatio
n 、Conisity Force成分）を良化させることが出来ない
と言う問題があった。Therefore, as shown in the abnormal states of FIGS. 5A to 5C, the left and right turnup bladders 6a and 6b are provided.
Outer diameter difference t and arrival time difference due to the speed to the bladder specified outer diameter change the sliding condition of the side tread 7 from the expanded turn-up bladders 6a and 6b, and as a result, the turn-up height position of the side tread 7 is increased. L is not stable, and the vulcanized tire molded by such a green tire has a uniformity (Lateral Force Variatio).
n, Conisity Force component) could not be improved.
【０００５】即ち、完成グリーンタイヤにおいて、上記
のターンナップハイト位置Ｌが左右で異なった場合、図
５（ｃ）に示すように、サイドトレッド７の長い方はそ
の被り量が多く、その結果、ショルダーゲージが厚くな
って、このゲージ厚が厚い方にConisity Forceが発生す
る。That is, in the completed green tire, when the turn-up height position L is different on the left and right, as shown in FIG. 5 (c), the longer side tread 7 has a larger amount of covering, and as a result, The shoulder gauge becomes thicker, and the Conisity Force is generated on the thicker gauge.
【０００６】Conisity Forceの影響度としては、サイド
のオフセンター量として考えると、１daN/mm程度であ
り、ショルダーゲージの左右差として考えると、0.65da
N/0.1mm 程度の影響があると考えられる。The degree of influence of the Conisity Force is about 1 daN / mm in terms of the amount of off-center on the side, and 0.65 da in terms of the lateral difference of the shoulder gauge.
It is considered that there is an impact of about N / 0.1 mm.
【０００７】この発明の目的は、左右一対のターンナッ
プブラダーを同時刻で規定外径に到達するように制御す
ることで、安定したタイヤ構成材料のターンナップが可
能となり、加硫タイヤのユニフォミティーを向上させる
ことが出来るタイヤ製造工程におけるブラダー外径制御
方法及びその装置を提供することにある。An object of the present invention is to control a pair of left and right turn-up bladders so as to reach a specified outer diameter at the same time, thereby enabling stable turn-up of tire constituent materials, and uniformity of a vulcanized tire. It is an object of the present invention to provide a bladder outer diameter control method and a device thereof in a tire manufacturing process, which is capable of improving the performance.
【０００８】[0008]
【課題を解決するための手段】この発明は上記目的を達
成するため、この発明のタイヤ製造工程におけるブラダ
ー外径制御方法は、ラジアルタイヤシェーピング工程に
おいて、左右一対のターンナップブラダーにブラダー膨
張媒体をそれぞれ供給して膨張させる際、前記左右一対
のターンナップブラダーの膨張過程の外径を随時、外径
測定検出センサーにより測定すると共に、その測定値を
比較演算し、この演算した測定値に基づき、前記ブラダ
ー膨張媒体の供給手段を制御してブラダー膨張媒体の供
給圧量を制御し、これにより左右一対のターンナップブ
ラダーが、同時刻で規定外径に到達するように制御する
ことを要旨とするものである。In order to achieve the above object, the present invention provides a method for controlling the outer diameter of a bladder in the tire manufacturing process of the present invention, in which a pair of left and right turn-up bladders are provided with a bladder expansion medium in a radial tire shaping process. When each supplied and inflated, the outer diameter of the expansion process of the pair of left and right turn-up bladders is measured at any time by the outer diameter measurement detection sensor, and the measured values are compared and calculated, based on the calculated measured values, The gist of controlling the supply means of the bladder expansion medium to control the supply pressure amount of the bladder expansion medium, thereby controlling the pair of left and right turn-up bladders to reach the specified outer diameter at the same time. It is a thing.
【０００９】前記外径測定検出センサーとしては、ター
ンナップブラダーの上面側から計測するレーザー変位計
や、ターンナップブラダーの側面側から計測する投光，
受光型の光検出センサーを用いるものである。As the outer diameter measuring and detecting sensor, a laser displacement meter for measuring from the upper surface side of the turn-up bladder, a light projection for measuring from the side surface of the turn-up bladder,
A light receiving type light detection sensor is used.
【００１０】このように、左右一対のターンナップブラ
ダーを同時刻で規定外径に到達するように制御し、到達
させた後にロールオーバーを開始するので、安定したタ
イヤ構成材料のターンナップが可能となり、加硫タイヤ
のユニフォミティーを良好にすることが可能である。In this way, the pair of left and right turn-up bladders are controlled so as to reach the specified outer diameter at the same time, and rollover is started after reaching the specified outer diameter, so that stable turn-up of the tire constituent material is possible. It is possible to improve the uniformity of the vulcanized tire.
【００１１】また、この発明のタイヤ製造工程における
ブラダー外径制御装置は、ラジアルタイヤ成形工程にお
けるブラダー外径制御装置であって、左右一対のターン
ナップブラダーの外径変化が生じる方向に、ターンナッ
プブラダーの外径測定検出センサーをそれぞれ設置し、
該外径測定検出センサーを変位計演算装置を介してブラ
ダー外径管理装置を備えた比較演算装置に接続し、この
比較演算装置と、前記左右一対のターンナップブラダー
のブラダー膨張媒体の供給手段とを成形機制御装置を介
して接続したことを要旨とするものである。Further, the bladder outer diameter control device in the tire manufacturing process of the present invention is a bladder outer diameter control device in the radial tire molding process, and the turnup is performed in the direction in which the outer diameter change of the pair of left and right turn-up bladders occurs. Each bladder outer diameter measurement detection sensor is installed,
The outer diameter measuring and detecting sensor is connected to a comparison calculation device equipped with a bladder outer diameter management device via a displacement gauge calculation device, and the comparison calculation device and the bladder expansion medium supply means of the pair of left and right turn-up bladders are provided. It is the gist that the above are connected via a molding machine control device.
【００１２】前記ブラダー膨張媒体の供給手段は、左右
一対のターンナップブラダーにそれぞれ接続された切替
弁、電空変換減圧弁と、エアー供給源とから構成し、ま
た前記外径測定検出センサーとしては、レーザー変位計
や投光器と受光器とから成る光検出センサーを使用する
ものである。The supply means for the bladder expansion medium is composed of a switching valve, an electropneumatic conversion pressure reducing valve, and an air supply source, which are respectively connected to a pair of left and right turn-up bladders. , A laser displacement meter or a light detection sensor consisting of a light projector and a light receiver is used.
【００１３】このように、ブラダー外径制御装置は、比
較的簡単な機構により精度良く実施出来るものである。As described above, the bladder outer diameter control device can be accurately implemented by a relatively simple mechanism.
【００１４】[0014]
【発明の実施の形態】以下、添付図面に基づき、この発
明の実施形態を説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１５】なお、従来例と同一構成要素は、同一符号
を付して説明は省略する。The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.
【００１６】図１は、この発明のブラダー外径制御方法
を実施するためのブラダー外径制御装置の第１実施形態
を示す概略構成図であって、１はビード、２はカーカス
材、３はベルト、４はキャップトレッドで、これらのタ
イヤ構成材料によりケーシング５を構成し、またケーシ
ング５の両側には、左右一対のターンナップブラダー６
ａ，６ｂが配設されている。FIG. 1 is a schematic configuration view showing a first embodiment of a bladder outer diameter control device for carrying out the bladder outer diameter control method of the present invention, in which 1 is a bead, 2 is a carcass material, and 3 is a carcass material. Belts 4 and 4 are cap treads, and a casing 5 is formed of these tire constituent materials. A pair of left and right turnup bladders 6 are provided on both sides of the casing 5.
a and 6b are provided.
【００１７】７はサイドトレッド、８は膨張したターン
ナップブラダー６ａ，６ｂをケーシング５の側面に押圧
するロールオーバーリングを示している。Reference numeral 7 is a side tread, and 8 is a rollover ring for pressing the expanded turn-up bladders 6a, 6b against the side surface of the casing 5.
【００１８】この発明の第１実施形態では、左右一対の
ターンナップブラダー６ａ，６ｂの外径変化が生じる方
向に、ターンナップブラダー６ａ，６ｂの外径測定検出
センサー１０Ａ，１０Ｂ（レーザー変位計型）をそれぞ
れ設置し、左右一対のターンナップブラダー６ａ，６ｂ
の外径を検出するものである。In the first embodiment of the present invention, the outer diameter measurement detection sensors 10A, 10B (laser displacement meter type) of the turn-up bladders 6a, 6b are arranged in the direction in which the outer diameters of the left and right turn-up bladders 6a, 6b change. ) Are respectively installed, and a pair of left and right turn-up bladders 6a and 6b
The outer diameter of is detected.
【００１９】この外径測定検出センサー１０Ａ，１０Ｂ
は、変位計演算装置１１ａ，１１ｂを介してブラダー外
径管理装置１２を備えた比較演算装置１３に計測したア
ナログ値を出力するように接続されている。ブラダー外
径管理装置１２は、タイヤサイズ毎に管理されたブラダ
ー外径情報を比較演算装置１３に出力するようになって
いる。The outer diameter measuring and detecting sensor 10A, 10B
Is connected so as to output the measured analog value to the comparison calculation device 13 including the bladder outer diameter management device 12 via the displacement gauge calculation devices 11a and 11b. The bladder outer diameter management device 12 outputs bladder outer diameter information managed for each tire size to the comparison calculation device 13.
【００２０】一方、左右一対のターンナップブラダー６
ａ，６ｂの供給口には、エアー等のブラダー膨張媒体Ｑ
の供給源１４に電空変換減圧弁１５ａ，１５ｂ及び切換
弁１６ａ，１６ｂ等から構成される供給手段１７ａ，１
７ｂを介してそれぞれ接続されている。On the other hand, a pair of left and right turn-up bladders 6
The bladder expansion medium Q such as air is supplied to the supply ports a and 6b.
The supply source 14 of the supply means 17a, 1 including electro-pneumatic conversion pressure reducing valves 15a, 15b and switching valves 16a, 16b, etc.
7b, respectively.
【００２１】前記比較演算装置１３は、左右の外径測定
検出センサー１０Ａ，１０Ｂ及び変位計演算装置１１
ａ，１１ｂからのアナログ値の大小を比較し、前記電空
変換減圧弁１５ａ，１５ｂへ個別に供給圧の指示信号を
出力し、また比較演算装置１３は、前記ブラダー外径管
理装置１２より、タイヤサイズ毎に管理されたブラダー
外径情報から、左右一対のターンナップブラダー６ａ，
６ｂが規定外径に到達したことの信号を、成形機制御装
置１８へ出力する。The comparison calculation device 13 includes left and right outer diameter measurement detection sensors 10A and 10B and a displacement gauge calculation device 11.
a, 11b compare the magnitude of the analog value, individually output the supply pressure instruction signal to the electro-pneumatic conversion pressure reducing valve 15a, 15b, and the comparison operation device 13, from the bladder outer diameter management device 12, From the bladder outer diameter information managed for each tire size, a pair of left and right turn-up bladders 6a,
A signal that 6b has reached the specified outer diameter is output to the molding machine control device 18.
【００２２】そして、この成形機制御装置１８では、制
御プログラムに従って、ブラダー規定外径到達信号で、
前記切換弁１６ａ，１６ｂを閉にしターンナップブラダ
ー６ａ，６ｂへのブラダー膨張媒体Ｑの供給を停止す
る。Then, in the molding machine control device 18, according to the control program, a bladder specified outer diameter arrival signal
The switching valves 16a and 16b are closed to stop the supply of the bladder expansion medium Q to the turn-up bladders 6a and 6b.
【００２３】このように、左右一対のターンナップブラ
ダー６ａ，６ｂが規定外径に到達制御した後、ロールオ
ーバーリング８が左右方向から移動してロールオーバー
（ターンナップ）を開始するので、常に安定したサイド
トレッド７のターンナップハイトが実現でき、安定した
グリーンタイヤを成形できるものである。In this way, after the pair of left and right turn-up bladders 6a, 6b are controlled to reach the specified outer diameter, the roll-over ring 8 moves from the left-right direction to start roll-over (turn-up), so that it is always stable. The turn-up height of the side tread 7 can be realized, and a stable green tire can be molded.
【００２４】なお、上記の実施形態では、フルステップ
成形方式の場合について説明したが、２ステップ成形方
式で実施されるカーカス等のターンナップについても実
施することは可能である。In the above embodiment, the case of the full-step molding method has been described, but it is also possible to implement the turn-up of the carcass and the like which is carried out by the two-step molding method.
【００２５】次に、図２はこの発明のブラダー外径制御
装置の第２実施形態を示す概略構成図であって、この実
施形態は、外径測定検出センサー１０Ａ，１０Ｂとし
て、複数の投光器１９ａと受光器１９ｂとから成る光検
出センサー２０を用いて左右一対のターンナップブラダ
ー６ａ，６ｂの外径を検出するようにしたものである。Next, FIG. 2 is a schematic configuration diagram showing a second embodiment of the bladder outer diameter control device of the present invention. In this embodiment, a plurality of light projectors 19a are used as the outer diameter measuring and detecting sensors 10A and 10B. The outer diameters of the pair of left and right turn-up bladders 6a and 6b are detected by using a light detection sensor 20 including a light receiver 19b and a light receiver 19b.
【００２６】即ち、この第２実施形態の光検出センサー
２０は、左右一対のターンナップブラダー６ａ，６ｂの
外径変化が生じる方向の側部に、等間隔で複数の投光器
１９ａと受光器１９ｂとを配設し、それぞれの左右一対
のターンナップブラダー６ａ，６ｂの外径を随時計測し
ながら、その計測したアナログ値をブラダー外径管理装
置１２を備えた比較演算装置１３に出力するように接続
されている。That is, in the light detecting sensor 20 of the second embodiment, a plurality of light emitters 19a and light receivers 19b are provided at equal intervals on the side portions of the pair of left and right turn-up bladders 6a, 6b in the direction in which the outer diameter changes. Is arranged and connected so as to output the measured analog value to the comparison operation device 13 including the bladder outer diameter management device 12 while measuring the outer diameter of each of the pair of left and right turn-up bladders 6a and 6b at any time. Has been done.
【００２７】なお、その他の構成及び作用は、上記第１
実施形態と同様なので、同一符号を付して説明は省略す
る。The other configurations and operations are the same as those of the first embodiment.
Since it is the same as the embodiment, the same reference numerals are given and the description is omitted.
【００２８】次に、上記のようなブラダー外径制御装置
を使用してブラダー外径制御方法を図３のフローチャー
トを参照しながら説明する。Next, a bladder outer diameter control method using the bladder outer diameter control device as described above will be described with reference to the flowchart of FIG.
【００２９】ブラダー外径制御装置をStart し、ブラダ
ー外径管理装置１２から比較演算装置１３に、タイヤサ
イズに応じた左右一対のターンナップブラダー６ａ，６
ｂの外径（φ）ｍｍ情報を転送して入力する（ステップ
(1))。The bladder outer diameter control device is started, and the bladder outer diameter management device 12 transfers the pair of left and right turn-up bladders 6a, 6 according to the tire size to the comparison calculation device 13.
Transfer and input the outer diameter (φ) mm information of b (step
(1)).
【００３０】次に、前回のブラダーに対するブラダー膨
張媒体Ｑのインフレート情報（加圧媒体の供給量情報）
が有る場合には、その情報（左右ブラダーに対する媒体
の圧力差情報）を、比較演算装置１３から成形機制御装
置１８に転送する（ステップ(2),(3))。また、前回の情
報が無い場合には、比較演算装置１３から成形機制御装
置１８に調整時の左右ブラダーの圧力データ(MPa) を転
送する（ステップ(2),(4))。Next, the inflation information of the bladder expansion medium Q for the previous bladder (information on the supply amount of the pressurized medium).
If there is, the information (pressure difference information of the medium for the left and right bladders) is transferred from the comparison calculation device 13 to the molding machine control device 18 (steps (2), (3)). When there is no previous information, the pressure data (MPa) of the left and right bladders at the time of adjustment are transferred from the comparison calculation device 13 to the molding machine control device 18 (steps (2), (4)).
【００３１】次に、成形機制御装置１８から電空変換減
圧弁１５ａ，１５ｂに、個別に供給圧の指示信号を出力
して設定し（ステップ(5))、サイドトレッド７等のタイ
ヤ構成部材のターンナップの指示があった場合には、外
径測定検出センサー１０Ａ，１０Ｂ（レーザー投光等）
を開始する（ステップ(6),(7))。Next, the molding machine controller 18 individually outputs and sets an instruction signal of the supply pressure to the electro-pneumatic conversion pressure reducing valves 15a and 15b (step (5)), and the tire constituent members such as the side tread 7 and the like. When there is a turn-up instruction, the outer diameter measurement detection sensors 10A, 10B (laser projection, etc.)
Is started (steps (6) and (7)).
【００３２】そして、左右のターンナップブラダー６
ａ，６ｂの膨張過程を左右の外径測定検出センサー１０
Ａ，１０Ｂ及び変位計演算装置１１ａ，１１ｂで随時監
視しながら計測し（ステップ(8))、また、成形機制御装
置１８では、制御プログラムに従って、ブラダー規定外
径到達信号で、前記切換弁１６ａ，１６ｂを「開」の状
態に制御する（ステップ(9))。The left and right turnup bladders 6
Left and right outer diameter measurement detection sensor 10 for the expansion process of a and 6b
A, 10B and the displacement gauge arithmetic units 11a, 11b are monitored while monitoring them at any time (step (8)), and the molding machine control unit 18 uses the bladder specified outer diameter arrival signal according to the control program to change the switching valve 16a. , 16b are controlled to the "open" state (step (9)).
【００３３】前記外径測定検出センサー１０Ａ，１０Ｂ
及び変位計演算装置１１ａ，１１ｂで測定したのアナロ
グ値を比較演算装置１３に出力し、比較演算装置１３で
は、左右のターンナップブラダー６ａ，６ｂの外径デー
タのアナログ値の大小を比較演算し、調整時のターンナ
ップブラダー６ａ，６ｂの左右圧力データを成形機制御
装置１８に出力する（ステップ(10)) 。The outer diameter measuring and detecting sensor 10A, 10B
And the analog values measured by the displacement gauge arithmetic units 11a and 11b are output to the comparison arithmetic unit 13, and the comparison arithmetic unit 13 compares and compares the analog values of the outer diameter data of the left and right turn-up bladders 6a and 6b. The left and right pressure data of the turn-up bladders 6a and 6b at the time of adjustment are output to the molding machine controller 18 (step (10)).
【００３４】左右のターンナップブラダー６ａ，６ｂに
外径データに差があり、右側のブラダーが左側のブラダ
ーよりも外径データが大きい場合には、比較演算装置１
３から電空変換減圧弁１５ａに供給圧の指示信号を出力
して圧力を上昇させ、また右側のブラダーが左側のブラ
ダーよりも外径データが小さい場合には、比較演算装置
１３から電空変換減圧弁１５ｂに供給圧の指示信号を出
力して上昇させる（ステップ(11),(12))。If there is a difference in outer diameter data between the left and right turn-up bladders 6a and 6b and the outer diameter data of the right bladder is larger than that of the left bladder, the comparison arithmetic unit 1
3 outputs an instruction signal of the supply pressure to the electro-pneumatic conversion pressure reducing valve 15a to increase the pressure, and when the outer diameter data of the right bladder is smaller than that of the left bladder, the comparison calculation device 13 converts the electro-pneumatic conversion. A supply pressure instruction signal is output to the pressure reducing valve 15b to increase the pressure (steps (11) and (12)).
【００３５】左側のターンナップブラダー６ａの外径が
規定外径に到達したら左側の電空変換減圧弁１５ａを
「閉」状態に制御し、また右側のターンナップブラダー
６ｂの外径が規定外径に到達したら右側の電空変換減圧
弁１５ｂを「閉」状態に制御する（ステップ(13),(1
4))。When the outer diameter of the left turn-up bladder 6a reaches the specified outer diameter, the left electropneumatic conversion pressure reducing valve 15a is controlled to the "closed" state, and the outer diameter of the right turn-up bladder 6b is adjusted to the specified outer diameter. When the pressure reaches the right side, the electro-pneumatic conversion pressure reducing valve 15b on the right side is controlled to the "closed" state (steps (13), (1
Four)).
【００３６】その後、成形機制御装置１８では制御プロ
グラムに従って、ブラダー規定到達信号で、前記切換弁
１６ａ，１６ｂを「閉」状態に制御する（ステップ(1
5)) 。そして、成形機制御装置１８からターンナップ開
始の信号、即ち、膨張したターンナップブラダー６ａ，
６ｂをケーシング５の側面に押圧するロールオーバーリ
ング８の作動信号を出力して制御を完了（ステップ(1
6)),（Ｅｎｄ）する。After that, the molding machine controller 18 controls the switching valves 16a and 16b to the "closed" state by the bladder regulation arrival signal according to the control program (step (1
Five)) . Then, the turn-up start signal from the molding machine control device 18, that is, the expanded turn-up bladder 6a,
The control is completed by outputting an operation signal of the rollover ring 8 that presses 6b against the side surface of the casing 5 (step (1
6)), (End).
【００３７】以上のような制御方法により、左右一対の
ターンナップブラダー６ａ，６ｂを同時刻で規定外径に
到達するように制御し、到達させた後にロールオーバー
を開始するので、安定したタイヤ構成材料のターンナッ
プが可能となり、加硫タイヤのユニフォミティー（Late
ral Force Variation 、Conisity Force成分）を良好に
することが可能となる。By the control method as described above, the pair of left and right turn-up bladders 6a, 6b are controlled to reach the specified outer diameter at the same time, and rollover is started after reaching the specified outer diameter. Material turn-up is possible, and the uniformity of vulcanized tires (Late
ral Force Variation, Conisity Force component) can be improved.
【００３８】[0038]
【発明の効果】この発明は、上記のように構成したの
で、左右一対のターンナップブラダーを同時刻で規定外
径に到達するように制御することで、安定したタイヤ構
成材料のターンナップが可能となり、加硫タイヤのユニ
フォミティーを向上させることが出来、またブラダー外
径制御装置は、比較的簡単な機構により精度良く実施出
来る効果がある。EFFECTS OF THE INVENTION Since the present invention is configured as described above, stable turn-up of tire constituent materials is possible by controlling the pair of left and right turn-up bladders so as to reach the specified outer diameter at the same time. Therefore, it is possible to improve the uniformity of the vulcanized tire, and the bladder outer diameter control device has an effect that it can be carried out accurately with a relatively simple mechanism.
【図１】この発明のブラダー外径制御方法を実施するた
めのブラダー外径制御装置の第１実施形態を示す概略構
成図である。FIG. 1 is a schematic configuration diagram showing a first embodiment of a bladder outer diameter control device for carrying out a bladder outer diameter control method of the present invention.
【図２】この発明のブラダー外径制御方法を実施するた
めのブラダー外径制御装置の第２実施形態を示す概略構
成図である。FIG. 2 is a schematic configuration diagram showing a second embodiment of a bladder outer diameter control device for carrying out the bladder outer diameter control method of the present invention.
【図３】ブラダー外径制御方法のフローチャート図であ
る。FIG. 3 is a flowchart of a bladder outer diameter control method.
【図４】（ａ）〜（ｃ）は、従来の正常状態のラジアル
タイヤ第１段成形工程におけるフルステップ成形方式の
グリーンタイヤのシェーピング工程の説明図である。4 (a) to 4 (c) are explanatory views of a shaping process of a green tire of a full-step molding method in a conventional radial tire first stage molding process in a normal state.
【図５】（ａ）〜（ｃ）は、従来の異常状態のラジアル
タイヤ第１段成形工程におけるフルステップ成形方式の
グリーンタイヤのシェーピング工程の説明図である。5A to 5C are explanatory views of a shaping process for a green tire of a full-step molding method in a conventional first stage radial tire molding process in an abnormal state.
【符号の説明】
１ ビード ２ カーカス材
３ ベルト ４ キャップトレッド
５ ケーシング ６ａ，６ｂ ターンナップブラ
ダー
７ サイドトレッド ８ ロールオーバーリ
ング
ｔ 外径差 Ｌ ターンナップハイ
ト位置
Ｑ ブラダー膨張媒体
１０Ａ，１０Ｂ 外径測定検出センサー
１１ａ，１１ｂ 変位計演算装置
１２ ブラダー外径管理装置
１３ 比較演算装置 １４ 供給源
１５ａ，１５ｂ 電空変換減圧弁
１６ａ，１６ｂ 切換弁
１７ａ，１７ｂ 供給手段 １８ 成形機制
御装置
１９ａ 投光器 １９ｂ 受光器
２０ 光検出センサー[Explanation of symbols] 1 bead 2 carcass material 3 belt 4 cap tread 5 casing 6a, 6b turn-up bladder 7 side tread 8 rollover ring t outer diameter difference L turn-up height position Q bladder expansion medium 10A, 10B outer diameter measurement detection Sensors 11a, 11b Displacement gauge computing device 12 Bladder outer diameter management device 13 Comparative computing device 14 Supply sources 15a, 15b Electro-pneumatic conversion pressure reducing valves 16a, 16b Switching valves 17a, 17b Supplying means 18 Molding machine control device 19a Emitter 19b Light receiver 20 Light detection sensor
Claims (7)
工程において、左右一対のターンナップブラダーにブラ
ダー膨張媒体をそれぞれ供給して膨張させる際、前記左
右一対のターンナップブラダーの膨張過程の外径を随
時、外径測定検出センサーにより測定すると共に、その
測定値を比較演算し、この演算した測定値に基づき、前
記ブラダー膨張媒体の供給手段を制御してブラダー膨張
媒体の供給圧量を制御し、これにより左右一対のターン
ナップブラダーが、同時刻で規定外径に到達するように
制御するタイヤ製造工程におけるブラダー外径制御方
法。1. In a shaping process of a radial tire manufacturing process, when a bladder expansion medium is supplied to a pair of left and right turn-up bladders for expansion, the outer diameters of the pair of left and right turn-up bladders are expanded at any time. While measuring with the diameter measurement detection sensor, the measured values are compared and calculated, and based on the calculated measured values, the supply means of the bladder expansion medium is controlled to control the supply pressure amount of the bladder expansion medium. A bladder outer diameter control method in a tire manufacturing process, wherein a pair of turn-up bladders are controlled to reach a specified outer diameter at the same time.
ンナップブラダーの上面側からレーザー変位計を用いて
計測する請求項１に記載のタイヤ製造工程におけるブラ
ダー外径制御方法。2. The bladder outer diameter control method in a tire manufacturing process according to claim 1, wherein a laser displacement meter is used as the outer diameter measuring and detecting sensor to measure from the upper surface side of a turn-up bladder.
ンナップブラダーの側面側から投光，受光型の光検出セ
ンサーを用いて計測する請求項１に記載のタイヤ製造工
程におけるブラダー外径制御方法。3. The bladder outer diameter control method in a tire manufacturing process according to claim 1, wherein the outer diameter measuring and detecting sensor is a light emitting / light receiving type light detecting sensor from a side surface of a turn-up bladder.
ー外径制御装置であって、左右一対のターンナップブラ
ダーの外径変化が生じる方向に、ターンナップブラダー
の外径測定検出センサーをそれぞれ設置し、該外径測定
検出センサーを変位計演算装置を介してブラダー外径管
理装置を備えた比較演算装置に接続し、この比較演算装
置と、前記左右一対のターンナップブラダーのブラダー
膨張媒体の供給手段とを成形機制御装置を介して接続し
て成るタイヤ製造工程におけるブラダー外径制御装置。4. A bladder outer diameter control device in a radial tire molding step, wherein outer diameter measuring and detecting sensors of the turnup bladder are respectively installed in a direction in which outer diameter changes of a pair of left and right turnup bladder occur. The diameter measurement detection sensor is connected to a comparison calculation device equipped with a bladder outer diameter management device through a displacement gauge calculation device, and this comparison calculation device and the bladder expansion medium supply means of the pair of left and right turn-up bladders are molded. A bladder outer diameter control device in a tire manufacturing process, which is connected through a machine control device.
右一対のターンナップブラダーにそれぞれ接続された切
替弁、電空変換減圧弁と、エアー供給源とから成る請求
項４に記載のタイヤ製造工程におけるブラダー外径制御
装置。5. The tire manufacturing process according to claim 4, wherein the bladder expansion medium supply means includes a switching valve, an electropneumatic conversion pressure reducing valve, and an air supply source which are respectively connected to a pair of left and right turn-up bladders. Bladder outer diameter control device.
変位計である請求項４または５に記載のタイヤ製造工程
におけるブラダー外径制御装置。6. The bladder outer diameter control device in the tire manufacturing process according to claim 4, wherein the outer diameter measuring and detecting sensor is a laser displacement meter.
受光器とから成る光検出センサーである請求項４または
５に記載のタイヤ製造工程におけるブラダー外径制御装
置。7. The bladder outer diameter control device in the tire manufacturing process according to claim 4, wherein the outer diameter measurement detection sensor is a light detection sensor including a light projector and a light receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001224507A JP4586312B2 (en) | 2001-07-25 | 2001-07-25 | Method and apparatus for controlling bladder outer diameter in tire manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001224507A JP4586312B2 (en) | 2001-07-25 | 2001-07-25 | Method and apparatus for controlling bladder outer diameter in tire manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003033977A true JP2003033977A (en) | 2003-02-04 |
| JP4586312B2 JP4586312B2 (en) | 2010-11-24 |
Family
ID=19057654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001224507A Expired - Fee Related JP4586312B2 (en) | 2001-07-25 | 2001-07-25 | Method and apparatus for controlling bladder outer diameter in tire manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4586312B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009137038A (en) * | 2007-12-03 | 2009-06-25 | Bridgestone Corp | Folding-back bladder monitoring system |
| JP2012131168A (en) * | 2010-12-22 | 2012-07-12 | Sumitomo Rubber Ind Ltd | Method for manufacturing cross-ply tire |
| WO2015062755A1 (en) * | 2013-10-29 | 2015-05-07 | Continental Reifen Deutschland Gmbh | Method for producing a vehicle tyre |
| WO2015062753A1 (en) * | 2013-10-29 | 2015-05-07 | Continental Reifen Deutschland Gmbh | Device for producing a vehicle tyre |
| CN107471705A (en) * | 2017-09-22 | 2017-12-15 | 青岛软控机电工程有限公司 | The distance control apparatus such as mechanical assembly drum, anti-package and its control method |
| CN107498902A (en) * | 2017-09-22 | 2017-12-22 | 青岛软控机电工程有限公司 | Mechanical assembly drum, tyre bead locking force checking device and its detection method |
| JP2019147252A (en) * | 2018-02-26 | 2019-09-05 | 住友ゴム工業株式会社 | Method of monitoring bladder internal pressure |
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| JPS56144947A (en) * | 1980-04-14 | 1981-11-11 | Sumitomo Rubber Ind Ltd | Method for preshaping breakerless radial tire |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009137038A (en) * | 2007-12-03 | 2009-06-25 | Bridgestone Corp | Folding-back bladder monitoring system |
| JP2012131168A (en) * | 2010-12-22 | 2012-07-12 | Sumitomo Rubber Ind Ltd | Method for manufacturing cross-ply tire |
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| CN107498902A (en) * | 2017-09-22 | 2017-12-22 | 青岛软控机电工程有限公司 | Mechanical assembly drum, tyre bead locking force checking device and its detection method |
| CN107498902B (en) * | 2017-09-22 | 2023-06-06 | 青岛软控机电工程有限公司 | Mechanical forming drum, tire bead locking force detection device and detection method thereof |
| JP2019147252A (en) * | 2018-02-26 | 2019-09-05 | 住友ゴム工業株式会社 | Method of monitoring bladder internal pressure |
| JP7056222B2 (en) | 2018-02-26 | 2022-04-19 | 住友ゴム工業株式会社 | How to monitor the internal pressure of the bladder |
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|---|---|
| JP4586312B2 (en) | 2010-11-24 |
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