JP4984897B2 - Pneumatic tire manufacturing equipment - Google Patents

Pneumatic tire manufacturing equipment Download PDF

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JP4984897B2
JP4984897B2 JP2007002613A JP2007002613A JP4984897B2 JP 4984897 B2 JP4984897 B2 JP 4984897B2 JP 2007002613 A JP2007002613 A JP 2007002613A JP 2007002613 A JP2007002613 A JP 2007002613A JP 4984897 B2 JP4984897 B2 JP 4984897B2
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inert gas
tire
vulcanization
path
circulation
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JP2008168490A (en
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三悦 李
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Description

この発明は、空気入りタイヤの製造装置に係わり、更に詳しくはタイヤの成形からタイヤ加硫及び搬出までの一連の作業を連続的に行うことが出来る空気入りタイヤの製造装置に関するものである。 This invention relates to a production equipment of a pneumatic tire, and more particularly, to a series of manufacturing equipment of a pneumatic tire which can continuously perform the work from the molding of the tire to the tire vulcanization and unloading .

従来、タイヤの製造工程では、タイヤの成形工程，搬送工程，加硫工程，搬出工程はそれぞれ分離されているのが一般的であり、タイヤの成形工程で成形されたグリーンタイヤ（未加硫タイヤ）を搬送装置により加硫工程に搬送し、グリーンタイヤを加硫成形した後、搬出装置により次工程へ搬出している。   Conventionally, in a tire manufacturing process, a tire forming process, a conveying process, a vulcanizing process, and an unloading process are generally separated, and a green tire (unvulcanized tire) formed in a tire forming process is generally used. ) Is conveyed to the vulcanization step by a conveying device, and the green tire is vulcanized and molded, and then is carried out to the next step by a carry-out device.

また、従来のタイヤ加硫工程では、加熱源としてスチームを用いているものが知られているが、スチームを作る出す為のユーティリティー設備が大掛かりで、高額な上に供給のための工事が大変であり、コストアップと共に納期に時間を要すると言う問題があった。   Also, in the conventional tire vulcanization process, it is known that steam is used as a heating source, but the utility facilities for producing steam are large, expensive and difficult to supply. There was a problem that time was required for delivery with cost increase.

また、タイヤ加硫においてスチームを用いることによって、スチームが冷えることによって発生するトレーンの上下に温度差が発生し、タイヤ品質にも影響を与えると言う問題があった。そこで、スチームの代わりに窒素ガス等の不活性ガスをヒータにより加熱するタイヤ加硫装置も提案されているが、装置が複雑でメンテナンスが複雑である等の問題があった（例えば、特許文献１参照）。
特開平５−１０４５４２号公報 Further, when steam is used in tire vulcanization, there is a problem that a temperature difference is generated between the upper and lower sides of the train generated by the cooling of the steam, which also affects the tire quality. Therefore, a tire vulcanizing apparatus has been proposed in which an inert gas such as nitrogen gas is heated by a heater instead of steam. However, there is a problem that the apparatus is complicated and maintenance is complicated (for example, Patent Document 1). reference).
JP-A-5-104542

この発明はかかる従来の問題点に着目し、タイヤの成形からタイヤ加硫及び搬出までの一連の作業を連続的に行うことが出来ると共に、タイヤ加硫において不活性ガスを熱媒体として使用することにより、低コストで高品質のタイヤを製造することが出来る空気入りタイヤの製造装置を提供することを目的とするものである。 The present invention pays attention to such conventional problems, and can continuously perform a series of operations from tire molding to tire vulcanization and unloading, and uses an inert gas as a heat medium in tire vulcanization. Accordingly, it is an object to provide a manufacturing equipment of a pneumatic tire capable of producing high-quality tires at low cost.

この発明は上記目的を達成するため、この発明の空気入りタイヤの製造装置は、タイヤ成形装置と、成形されたタイヤを搬送する搬送装置と、不活性ガスの循環機構を備えた加硫装置と、加硫装置で加硫された成形タイヤを搬出する搬出装置とを連続的に配設して構成し、前記加硫装置は、不活性ガスの貯蔵手段に接続した不活性ガスの供給経路と排気経路を加硫装置の中心機構に接続し、前記不活性ガスの供給経路と排気経路の途中に不活性ガスの循環経路を構成し、この循環経路に不活性ガスの冷却を行う熱交換器を備えた冷却手段と不活性ガスの加熱を行う熱交換器を備えた加熱手段とを設置すると共に、この冷却手段と加熱手段とを温度，圧力制御を行う制御装置に接続したことを要旨とするものである。 In order to achieve the above-mentioned object, the pneumatic tire manufacturing apparatus of the present invention includes a tire molding apparatus, a conveying apparatus that conveys the molded tire, and a vulcanizing apparatus that includes an inert gas circulation mechanism. An unloading device for unloading the molded tire vulcanized by the vulcanizing device, and the vulcanizing device includes an inert gas supply path connected to an inert gas storage means; A heat exchanger in which an exhaust path is connected to a central mechanism of a vulcanizer, an inert gas circulation path is formed in the middle of the inert gas supply path and the exhaust path, and the inert gas is cooled in this circulation path And a cooling means equipped with a heating means equipped with a heat exchanger for heating an inert gas, and the cooling means and the heating means were connected to a control device for temperature and pressure control. To do.

ここで、前記不活性ガスの循環経路に、不活性ガスの循環駆動装置を設けるものである。 Here, in which before Symbol the circulation path of the inert gas, provided circulation driving apparatus of an inert gas.

このように、タイヤの成形からタイヤ加硫及び搬出までの一連の作業を連続的に行うことが出来ると共に、タイヤ加硫において不活性ガスを熱媒体として使用することにより、低コストで高品質のタイヤを製造することが出来る。   In this way, a series of operations from tire molding to tire vulcanization and unloading can be continuously performed, and by using an inert gas as a heat medium in tire vulcanization, high quality can be achieved at low cost. Tires can be manufactured.

この発明は上記のように構成したので、以下のような優れた効果を奏するものである。   Since the present invention is configured as described above, the following excellent effects can be obtained.

(a).タイヤの成形からタイヤ加硫及び搬出までの一連の作業を連続的に行うことが出来るので、タイヤ品質の向上と、生産性の向上を図ることが出来る。 (a) Since a series of operations from tire molding to tire vulcanization and unloading can be performed continuously, it is possible to improve tire quality and productivity.

(b).また、タイヤ加硫において不活性ガスを熱媒体として使用することにより、低コストで高品質のタイヤを製造することが出来、ユーティリティーコストの低減を図ることが出来る。 (b) Further, by using an inert gas as a heat medium in tire vulcanization, a high-quality tire can be manufactured at a low cost, and utility costs can be reduced.

(c).トレーン等の影響等によるタイヤ上下温度差による品質のバラツキを低減させることが出来る。 (c) It is possible to reduce the quality variation due to the temperature difference between the upper and lower sides of the tire due to the influence of the train and the like.

(d).加硫中のタイヤ内部温度を予め設定したプロファイルコントロールすることによってタイヤの品質の向上を図ることが出来る。   (d) The tire quality can be improved by controlling the profile of the tire during vulcanization in advance.

(e).不活性ガスを加熱媒体として、加熱した不活性ガスを再利用することにより、必要最小限度のエネルギーを与えれば加硫することが出来、ランニング・コストの低減を図ることが出来る。   (e) By using the inert gas as a heating medium and reusing the heated inert gas, vulcanization can be performed if the minimum amount of energy is applied, and the running cost can be reduced.

以下、添付図面に基づき、この発明の実施形態を説明する。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

図１はこの発明の空気入りタイヤの製造方法を実施するための製造装置のブロック図、図２はこの発明の空気入りタイヤの製造方法の加硫工程の概略構成図を示し、前記空気入りタイヤの製造装置１は、タイヤ成形装置２と、成形されたグリーンタイヤ（未加硫タイヤ）を搬送する搬送装置３と、不活性ガスの循環機構を備えたタイヤ加硫装置４と、タイヤ加硫装置４で加硫された成形タイヤを搬出する搬出装置５とを連続的に配設して構成されている。   FIG. 1 is a block diagram of a production apparatus for carrying out the method for producing a pneumatic tire according to the present invention, and FIG. 2 is a schematic diagram showing the vulcanization process of the method for producing a pneumatic tire according to the present invention. The manufacturing apparatus 1 includes a tire forming apparatus 2, a conveying apparatus 3 that conveys a molded green tire (unvulcanized tire), a tire vulcanizing apparatus 4 that includes an inert gas circulation mechanism, and a tire vulcanizing apparatus. An unloading device 5 for unloading the molded tire vulcanized by the device 4 is continuously arranged.

また前記タイヤ加硫装置４は、窒素ガス等の不活性ガスＧの貯蔵手段６ａ，６ｂに接続した不活性ガスＧの供給経路７と排気経路８とをタイヤ加硫装置４のブラダーやタイヤクランプ機構等の中心機構９に接続してある。前記不活性ガスＧの供給経路７と排気経路８の途中には不活性ガスＧの循環経路１０が構成してあり、この循環経路１０に不活性ガスＧの冷却を行う熱交換器１１を備えた冷却手段１２と、不活性ガスＧの加熱を行う熱交換器１３を備えた加熱手段１４とが設置してある。   Further, the tire vulcanizing apparatus 4 is configured such that the inert gas G supply path 7 and the exhaust path 8 connected to the inert gas G storage means 6a and 6b such as nitrogen gas are connected to the bladder or tire clamp of the tire vulcanizing apparatus 4. It is connected to a central mechanism 9 such as a mechanism. In the middle of the supply path 7 and the exhaust path 8 of the inert gas G, a circulation path 10 of the inert gas G is formed, and the circulation path 10 includes a heat exchanger 11 that cools the inert gas G. The cooling means 12 and the heating means 14 provided with a heat exchanger 13 for heating the inert gas G are installed.

前記冷却手段１２と加熱手段１４とは、前記循環経路１０に接続する制御回路１５が設けてあり、この制御回路１５には、制御装置１６と、不活性ガスＧの温度センサー１７，圧力センサー１８とがそれぞれ設置してあり、循環経路１０には切替えバルブＶ１を介して不活性ガスＧの循環駆動モータ等の循環駆動装置１９が設けてある。   The cooling means 12 and the heating means 14 are provided with a control circuit 15 connected to the circulation path 10. The control circuit 15 includes a control device 16, a temperature sensor 17 for the inert gas G, and a pressure sensor 18. And a circulation drive device 19 such as a circulation drive motor for the inert gas G is provided in the circulation path 10 via a switching valve V1.

この循環駆動装置１９と、前記熱交換器１１，１３とを接続する配管、即ち、不活性ガスＧの供給経路７の一部には、切替えバルブＶ２，Ｖ３が配設されている。   Switching valves V2 and V3 are disposed in a pipe connecting the circulation drive device 19 and the heat exchangers 11 and 13, that is, a part of the supply path 7 of the inert gas G.

次に、この発明の空気入りタイヤの製造方法について説明する。
この発明の空気入りタイヤの製造方法は、図１に示すように、空気入りタイヤの製造装置１のタイヤ成形工程（タイヤ成形装置２）で成形された未加硫タイヤを搬送装置３を介して加硫工程のタイヤ加硫装置４に搬送し、該タイヤ加硫装置４で不活性ガスＧを熱媒体として温度及び圧力を制御しながらタイヤの加硫を行い、タイヤ加硫装置４で加硫された成形タイヤは、搬出装置５を介して次工程へ自動的に搬出するものである。 Next, the manufacturing method of the pneumatic tire of this invention is demonstrated.
As shown in FIG. 1, the method for manufacturing a pneumatic tire according to the present invention uses an unvulcanized tire formed in a tire forming process (tire forming apparatus 2) of a pneumatic tire manufacturing apparatus 1 via a conveying apparatus 3. It is conveyed to the tire vulcanizer 4 in the vulcanization process, and the tire vulcanizer 4 vulcanizes the tire while controlling the temperature and pressure using the inert gas G as a heat medium, and the tire vulcanizer 4 vulcanizes. The formed tire is automatically carried out to the next process via the carry-out device 5.

そして、この発明の実施形態では前記タイヤの加硫工程において、成形工程から搬送されて来た未加硫タイヤをタイヤ加硫装置４にセットした後、タイヤ加硫装置４に接続された不活性ガスＧの循環装置からコントロールされた加熱加圧された不活性ガスＧをタイヤ内部に導入して加硫を行い、加硫終了後、不活性ガスを循環装置に戻して再利用するようにしたものである。   In the embodiment of the present invention, in the tire vulcanizing step, the unvulcanized tire conveyed from the molding step is set in the tire vulcanizing device 4 and then connected to the tire vulcanizing device 4. The heated and pressurized inert gas G controlled from the gas G circulation device is introduced into the tire for vulcanization, and after the vulcanization is completed, the inert gas is returned to the circulation device for reuse. Is.

具体的にはタイヤの加硫時において、貯蔵手段６ａからの窒素ガス等の不活性ガスＧを供給経路７に設けた熱交換器１３を備えた加熱手段１４により所定温度にして中心機構９に保持された金型内のタイヤ内に導入することで加硫を行う。   Specifically, at the time of vulcanization of the tire, the central mechanism 9 is brought to a predetermined temperature by the heating means 14 provided with the heat exchanger 13 provided with the inert gas G such as nitrogen gas from the storage means 6a in the supply path 7. Vulcanization is carried out by introducing it into the tire in the held mold.

また、一度タイヤ内に導入した不活性ガスＧは、時間の経過と伴って温度が低下してくるので、不活性ガスＧの温度センサー１７，圧力センサー１８により不活性ガスＧの状況を検出しながら循環経路１０に設けた循環駆動装置１９を制御装置１６により制御し、不活性ガスＧを循環させながら循環経路１０の途中で熱交換器１３を備えた加熱手段１４により再度過熱し、必要な温度と圧力を保持させて最適な加硫条件により加硫を行うものである。   Moreover, since the temperature of the inert gas G once introduced into the tire decreases with time, the state of the inert gas G is detected by the temperature sensor 17 and the pressure sensor 18 of the inert gas G. While the circulation drive device 19 provided in the circulation path 10 is controlled by the control device 16, it is superheated again by the heating means 14 provided with the heat exchanger 13 in the middle of the circulation path 10 while circulating the inert gas G, and necessary. Vulcanization is performed under optimum vulcanization conditions while maintaining temperature and pressure.

また、加硫中に冷却手段１２により冷却された不活性ガスＧをタイヤ内部に導入することでタイヤ内部の温度を低下させオーバー加硫を防止させることが出来る。   Further, by introducing the inert gas G cooled by the cooling means 12 during vulcanization into the tire, the temperature inside the tire can be lowered and over-vulcanization can be prevented.

このようにして、タイヤの加硫が終了した後、循環経路１０の不活性ガスＧは排気経路８を介して不活性ガスＧの貯蔵手段６ｂに一旦排気させ、必要な熱を与えて次の加硫で再利用をするようにするものである。このように、タイヤ加硫の過熱媒体を別のユニットに退避させて過熱再利用を図るようなシステムにすることで、省エネルギー化の実現を図ることが出来ると共に、タイヤの生産性の向上を図ることが出来るものである。   In this way, after the vulcanization of the tire is completed, the inert gas G in the circulation path 10 is once exhausted to the inert gas G storage means 6b through the exhaust path 8, and necessary heat is applied to the next. It is intended to be reused by vulcanization. As described above, by saving the tire vulcanization superheating medium to another unit and reusing the system for overheating, energy saving can be realized and tire productivity can be improved. It can be done.

以上のように、この発明ではタイヤの成形からタイヤ加硫及び搬出までの一連の作業を連続的に行うことが出来ると共に、タイヤ加硫において不活性ガスを熱媒体として使用することにより、低コストで高品質のタイヤを製造することが出来る。   As described above, according to the present invention, a series of operations from tire molding to tire vulcanization and unloading can be performed continuously, and by using an inert gas as a heat medium in tire vulcanization, low cost is achieved. Can produce high quality tires.

この発明の空気入りタイヤの製造方法を実施するための製造装置のブロック 図である。It is a block diagram of the manufacturing apparatus for enforcing the manufacturing method of the pneumatic tire of this invention. この発明の空気入りタイヤの製造方法の加硫工程の概略構成図である。It is a schematic block diagram of the vulcanization | cure process of the manufacturing method of the pneumatic tire of this invention.

１ 空気入りタイヤの製造装置
２ タイヤ成形装置
３ 搬送装置
４ タイヤ加硫装置
５ 搬出装置
６ａ，６ｂ 貯蔵手段
７ 供給経路
８ 排気経路
９ 中心機構
１０ 循環経路
１１ 熱交換器
１２ 冷却手段
１３ 熱交換器
１４ 加熱手段
１５ 制御回路
１６ 御装置
１７ 温度センサー
１８ 圧力センサー
１９ 循環駆動装置
Ｇ 不活性ガス
Ｖ１，Ｖ２，Ｖ３ 切替えバルブ DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus of pneumatic tire 2 Tire shaping | molding apparatus 3 Conveying apparatus 4 Tire vulcanizing apparatus 5 Unloading apparatus 6a, 6b Storage means 7 Supply path 8 Exhaust path 9 Central mechanism 10 Circulation path 11 Heat exchanger 12 Cooling means 13 Heat exchanger 14 Heating means 15 Control circuit 16 Control device 17 Temperature sensor 18 Pressure sensor 19 Circulation drive device G Inert gas V1, V2, V3 switching valve

Claims (2)

タイヤ成形装置と、成形されたタイヤを搬送する搬送装置と、不活性ガスの循環機構を備えた加硫装置と、加硫装置で加硫された成形タイヤを搬出する搬出装置とを連続的に配設して構成し、前記加硫装置は、不活性ガスの貯蔵手段に接続した不活性ガスの供給経路と排気経路を加硫装置の中心機構に接続し、前記不活性ガスの供給経路と排気経路の途中に不活性ガスの循環経路を構成し、この循環経路に不活性ガスの冷却を行う熱交換器を備えた冷却手段と不活性ガスの加熱を行う熱交換器を備えた加熱手段とを設置すると共に、この冷却手段と加熱手段とを温度，圧力制御を行う制御装置に接続したことを特徴とする空気入りタイヤの製造装置。   A tire molding device, a conveying device that conveys a molded tire, a vulcanizing device that includes a circulation mechanism of an inert gas, and a carry-out device that carries out a molded tire vulcanized by the vulcanizing device are continuously provided. The vulcanizing apparatus is configured to connect an inert gas supply path and an exhaust path connected to an inert gas storage means to a central mechanism of the vulcanizer, and to supply the inert gas supply path. An inert gas circulation path is configured in the middle of the exhaust path, and a cooling means including a heat exchanger for cooling the inert gas in the circulation path and a heating means including a heat exchanger for heating the inert gas. And a cooling device and a heating device connected to a control device for controlling temperature and pressure. 前記不活性ガスの循環経路に、不活性ガスの循環駆動装置を設けた請求項１に記載の空気入りタイヤの製造装置。 The apparatus for manufacturing a pneumatic tire according to claim 1 , wherein an inert gas circulation drive device is provided in the inert gas circulation path.
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