JP2005178025A - Washing method of tire mold - Google Patents

Washing method of tire mold Download PDF

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Publication number
JP2005178025A
JP2005178025A JP2003418084A JP2003418084A JP2005178025A JP 2005178025 A JP2005178025 A JP 2005178025A JP 2003418084 A JP2003418084 A JP 2003418084A JP 2003418084 A JP2003418084 A JP 2003418084A JP 2005178025 A JP2005178025 A JP 2005178025A
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tire mold
cleaning
mold
titanium oxide
tire
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JP2003418084A
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Japanese (ja)
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Michihiro Sugata
通博 姿
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Priority to JP2003418084A priority Critical patent/JP2005178025A/en
Publication of JP2005178025A publication Critical patent/JP2005178025A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel washing method of a tire mold capable of effectively washing the tire mold up to the fine parts thereof by a high washing capacity without cutting or abrading the matrix itself of the tire mold and making a washing apparatus too large-scaled. <P>SOLUTION: The tire mold is washed in a washing bath tank using ultraviolet rays with a wavelength of 390 nm or below being main energy and an aqueous solution of titanium oxide. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、タイヤ加硫成形用の金型（以下、単に「タイヤ金型」あるいは「金型」と呼ぶことがある）の洗浄方法に関する。   The present invention relates to a method for cleaning a mold for tire vulcanization molding (hereinafter sometimes simply referred to as “tire mold” or “mold”).

従来、タイヤ加硫成形用の金型の洗浄法として知られている方法は、以下の（１）〜（５）の方法があるが、それぞれ以下に記載するような欠点や不都合点があった。
（１）ショットブラスト法
ショットブラスト法は、アルミナ、ガラスビーズ、プラスチックビーズ、ドライアイス等を高圧ガスとともに吹き付け、金型の汚れを除去するものである。この方法は、タイヤ金型の汚れと共に金型の母材（アルミ合金）自体も削り取ってしまうため、金型の表面が荒れたり、摩耗するという問題がある。
（２）液体洗浄法
液体洗浄法は、酸・アルカリ・界面活性剤・溶剤などを使用して、金型の汚れを除去するものである。この方法は、溶剤がタイヤ金型の母材（アルミ合金）を腐食させるという問題がある。
（３）レーザー照射法
レーザー照射法は、レーザーで汚れを燃焼させ、金型の除去するものである。この方法は、タイヤ金型へ与えるダメージがない反面、レーザー照射の死角となる部分の汚れが取れないという問題がある。
（４）プラズマ洗浄法
減圧した状態で反応ガスを吹き付けながらプラズマを発生させ、金型の汚れを燃焼除去するものである。この方法は、レーザー照射法のような死角となる部分が発生することはないが、タイヤ金型のエアー抜き機能の一種である、隙間が０．０５ｍｍ前後の間隔からなるスリッドベント内へは、反応ガスが浸透し難く、十分な洗浄効果を得ることができない。
（５）超臨界水洗浄法
超臨界流体を用いて、金型の汚れを除去するものである。この方法は、タイヤ金型へ与えるダメージがなく、また前記スリッドベント内の洗浄効果も高く、超臨界流体として超臨界水を用いる方法がに提案されている（特許文献１）。 Conventionally, there are the following methods (1) to (5) known as a method for cleaning a mold for tire vulcanization molding, but each has the following drawbacks and disadvantages. .
(1) Shot blasting method The shot blasting method is a method in which alumina, glass beads, plastic beads, dry ice or the like is sprayed together with high-pressure gas to remove mold stains. This method has a problem that the mold surface is roughened or worn out because the mold base material (aluminum alloy) itself is scraped off along with the dirt on the tire mold.
(2) Liquid cleaning method The liquid cleaning method uses an acid, alkali, surfactant, solvent or the like to remove mold stains. This method has a problem that the solvent corrodes the base material (aluminum alloy) of the tire mold.
(3) Laser irradiation method The laser irradiation method burns dirt with a laser and removes a mold. Although this method does not damage the tire mold, there is a problem that the portion that becomes the blind spot of laser irradiation cannot be removed.
(4) Plasma cleaning method Plasma is generated while spraying a reaction gas in a decompressed state to burn and remove mold dirt. This method does not generate a blind spot like the laser irradiation method, but is a kind of air release function of the tire mold, into the slit vent having a gap of about 0.05 mm, The reaction gas is difficult to permeate and a sufficient cleaning effect cannot be obtained.
(5) Supercritical water cleaning method A supercritical fluid is used to remove mold dirt. This method has no damage to the tire mold, has a high cleaning effect in the slide vent, and a method using supercritical water as a supercritical fluid has been proposed (Patent Document 1).

しかし、超臨界水反応を得るためには、水の臨界点である温度３７３．９℃、圧力２１．３ＭＰａ以上の高温、高圧の環境を作り出す装置が不可欠となるため、一般に金型の洗浄設備としては非常に高価なものとなり、実用化には不向きなものである。
特開２０００−２８０２６２号公報 However, in order to obtain a supercritical water reaction, an apparatus for creating a high temperature and high pressure environment at a temperature of 373.9 ° C. and a pressure of 21.3 MPa or higher, which is the critical point of water, is indispensable. As such, it is very expensive and unsuitable for practical use.
JP 2000-280262 A

上述したような点に鑑み、本発明の目的は、金型の母材自体を削り取ったり摩耗させたりすることがなく、かつ装置的にそれぼど大がかりなものとすることもなく、高い洗浄能力で、タイヤ金型の微細な部分まで効果的に洗浄をなし得る新規なタイヤ金型の洗浄方法を提供することにある。   In view of the above-mentioned points, the object of the present invention is not to scrape or wear the mold base material itself, and it is possible to obtain a high cleaning capability without making the apparatus very large. Accordingly, it is an object of the present invention to provide a novel tire mold cleaning method capable of effectively cleaning even a fine portion of a tire mold.

上述した目的を達成する本発明のタイヤ金型の洗浄方法は、以下の（１）の構成からなる。
（１）主エネルギーが３９０ｎｍ以下の波長からなる紫外線光と、酸化チタンの水溶液を用いて、洗浄浴槽内のタイヤ金型を洗浄することを特徴とするタイヤ金型の洗浄方法。
（２）洗浄浴槽内の酸化チタンの水溶液を撹拌しながらタイヤ金型を洗浄することを特徴とする上記（１）記載のタイヤ金型の洗浄方法。
（３）洗浄浴槽内の酸化チタンの水溶液に超音波振動を発生させながらタイヤ金型を洗浄することを特徴とする上記（１）または（２）記載のタイヤ金型の洗浄方法。 The tire mold cleaning method of the present invention that achieves the above-described object has the following configuration (1).
(1) A method for cleaning a tire mold, wherein the tire mold in a cleaning bath is cleaned using ultraviolet light having a main energy wavelength of 390 nm or less and an aqueous solution of titanium oxide.
(2) The tire mold cleaning method according to (1), wherein the tire mold is cleaned while stirring the aqueous solution of titanium oxide in the cleaning bath.
(3) The tire mold cleaning method according to (1) or (2) above, wherein the tire mold is cleaned while generating ultrasonic vibrations in the aqueous solution of titanium oxide in the cleaning bath.

請求項１にかかる本発明のタイヤ金型の洗浄方法によれば、金型の母材自体を削り取ったり摩耗させたりすることがなく、かつ装置的にそれぼど大がかりなものとすることもなく、高い洗浄能力で、タイヤ金型の微細な部分まで効果的に洗浄を行うことが可能となるものである。   According to the tire mold cleaning method of the present invention according to claim 1, the base metal itself of the mold is not scraped off or worn, and the apparatus is not made very large. With a high cleaning ability, it is possible to effectively clean even fine portions of the tire mold.

請求項２にかかる本発明のタイヤ金型の洗浄方法によれば、請求項１にかかる本発明のタイヤ金型の洗浄方法に基づく効果をそのまま有しながら、より高い洗浄効果を呈してタイヤ金型の微細な部分まで効果的に洗浄を行うことが可能となる。   According to the method for cleaning a tire mold of the present invention according to claim 2, the tire mold exhibits a higher cleaning effect while having the effect based on the method for cleaning a tire mold of the present invention according to claim 1. It is possible to effectively clean even the fine part of the mold.

請求項３にかかる本発明のタイヤ金型の洗浄方法によれば、請求項１または請求項２にかかる本発明のタイヤ金型の洗浄方法に基づく効果をそのまま有しながら、更により高い洗浄効果を呈してタイヤ金型の微細な部分まで効果的に洗浄を行うことが可能となる。   According to the method for cleaning a tire mold of the present invention according to claim 3, while having the effect based on the method for cleaning a tire mold of the present invention according to claim 1 or 2, the cleaning effect is further enhanced. Thus, it is possible to effectively clean even a fine portion of the tire mold.

以下、図面等に基づきながら、更に詳しく本発明のタイヤ金型の洗浄方法について、説明する。   Hereinafter, the tire mold cleaning method of the present invention will be described in more detail with reference to the drawings.

本発明のタイヤ金型の洗浄方法は、主エネルギーが３９０ｎｍ以下の波長からなる紫外線光と、酸化チタンの水溶液を用いて、洗浄浴槽内のタイヤ金型を洗浄するものであり、図１は、本発明のタイヤ金型の洗浄方法を実施するためのタイヤ金型洗浄装置の一構成例をモデル的に示した概略概念図である。   The tire mold cleaning method of the present invention is to clean the tire mold in the cleaning bath using ultraviolet light having a main energy of a wavelength of 390 nm or less and an aqueous solution of titanium oxide. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic conceptual diagram schematically showing a configuration example of a tire mold cleaning device for carrying out a tire mold cleaning method of the present invention.

図１において、タイヤ金型１は、酸化チタンの水溶液２が充填されているタイヤ金型洗浄浴槽３において、主エネルギーが３９０ｎｍ以下の波長からなる紫外線光に照射されて、光触媒作用により、金型の汚れ、油分などが洗浄・除去されるものである。図１において、４は主エネルギーが３９０ｎｍ以下の波長からなる紫外線光源であり、５は超音波発生機構であり、６は攪拌機であり、酸化チタンの水溶液を撹拌するものである。   In FIG. 1, a tire mold 1 is irradiated with ultraviolet light having a main energy of a wavelength of 390 nm or less in a tire mold cleaning bath 3 filled with an aqueous solution 2 of titanium oxide, and the mold is photocatalyzed. Dirt and oil are cleaned and removed. In FIG. 1, 4 is an ultraviolet light source having a main energy having a wavelength of 390 nm or less, 5 is an ultrasonic wave generation mechanism, 6 is a stirrer, and stirs an aqueous solution of titanium oxide.

これらの超音波発生機構５や、攪拌機６は、本発明方法に従い、タイヤ金型の洗浄を行うにあたりその光触媒（酸化チタン）による洗浄作用を補助するものであり、必須の構成ではないものである。   These ultrasonic generating mechanism 5 and stirrer 6 assist the cleaning action by the photocatalyst (titanium oxide) in accordance with the method of the present invention, and are not essential components. .

本発明において、酸化チタンの水溶液２は、洗浄浴槽内に満たされていてかつ被洗浄物たるタイヤ金型がその中に浸漬されて洗浄処理に供される必要は必ずしもなく、例えば、該水溶液２がタイヤ金型１の表面に散布されて存在している状態で、上記した紫外線光の照射をして洗浄するような態様としてもよいものである。   In the present invention, the aqueous solution 2 of titanium oxide is not necessarily required to be filled in the cleaning bath and immersed in the tire mold that is the object to be cleaned and used for the cleaning process. In a state in which is sprayed on the surface of the tire mold 1, the cleaning may be performed by irradiating with the above-described ultraviolet light.

すなわち、本発明において、洗浄浴槽とは、酸化チタンの水溶液を満たすものの他、散布や噴射などされる酸化チタン水溶液を受ける槽も含んだ概念である。   That is, in the present invention, the washing bath is a concept that includes a tank that receives an aqueous solution of titanium oxide as well as a tank that receives an aqueous solution of titanium oxide that is sprayed or sprayed.

上述のように構成することにより、光触媒反応を利用して金型の汚れを除去することができる。特に、金型内の微細な内部にわたる汚れを効果的に洗浄できる点で、本発明方法はタイヤ金型の洗浄法として最適なものである。   By comprising as mentioned above, a mold | die stain | pollution | contamination can be removed using a photocatalytic reaction. In particular, the method of the present invention is optimal as a method for cleaning a tire mold because it can effectively clean fine stains in the mold.

図１は、本発明のタイヤ金型の洗浄方法を実施するためのタイヤ金型洗浄装置の一構成例をモデル的に示した概略概念図である。FIG. 1 is a schematic conceptual diagram schematically showing a configuration example of a tire mold cleaning apparatus for carrying out the tire mold cleaning method of the present invention.

符号の説明Explanation of symbols

１：タイヤ金型
２：酸化チタンの水溶液
３：タイヤ金型洗浄浴槽
４：主エネルギーが３９０ｎｍ以下の波長からなる紫外線光源
５：超音波発生機構
６：攪拌機 1: Tire mold 2: Titanium oxide aqueous solution 3: Tire mold washing bath 4: Ultraviolet light source with main energy having a wavelength of 390 nm or less 5: Ultrasonic wave generation mechanism 6: Stirrer

Claims (3)

主エネルギーが３９０ｎｍ以下の波長からなる紫外線光と、酸化チタンの水溶液を用いて、洗浄浴槽内のタイヤ金型を洗浄することを特徴とするタイヤ金型の洗浄方法。   A method for cleaning a tire mold, comprising cleaning a tire mold in a cleaning bath using ultraviolet light having a main energy wavelength of 390 nm or less and an aqueous solution of titanium oxide. 洗浄浴槽内の酸化チタンの水溶液を撹拌しながらタイヤ金型を洗浄することを特徴とする請求項１記載のタイヤ金型の洗浄方法。   2. The tire mold cleaning method according to claim 1, wherein the tire mold is cleaned while stirring the aqueous solution of titanium oxide in the cleaning bath. 洗浄浴槽内の酸化チタンの水溶液に超音波振動を発生させながらタイヤ金型を洗浄することを特徴とする請求項１または２記載のタイヤ金型の洗浄方法。   3. The tire mold cleaning method according to claim 1, wherein the tire mold is cleaned while generating ultrasonic vibration in an aqueous solution of titanium oxide in the cleaning bath.
JP2003418084A 2003-12-16 2003-12-16 Washing method of tire mold Pending JP2005178025A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013169646A (en) * 2012-02-21 2013-09-02 Varel Internatl Industries Lp By-product removal apparatus, cleaned leached cutter, method for removing by-product material, and method for determining effectiveness of removing by-product material
WO2017082162A1 (en) * 2015-11-11 2017-05-18 横浜ゴム株式会社 Tire cleaning system
CN111172549A (en) * 2020-02-11 2020-05-19 高岩 Method and system for cleaning pure titanium surface through titanium dioxide photocatalysis

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013169646A (en) * 2012-02-21 2013-09-02 Varel Internatl Industries Lp By-product removal apparatus, cleaned leached cutter, method for removing by-product material, and method for determining effectiveness of removing by-product material
WO2017082162A1 (en) * 2015-11-11 2017-05-18 横浜ゴム株式会社 Tire cleaning system
JPWO2017082162A1 (en) * 2015-11-11 2017-11-16 横浜ゴム株式会社 Tire cleaning system
KR101929763B1 (en) 2015-11-11 2018-12-17 요코하마 고무 가부시키가이샤 Tire cleaning system
US10343194B2 (en) 2015-11-11 2019-07-09 The Yokohama Rubber Co., Ltd. Tire cleaning system
CN111172549A (en) * 2020-02-11 2020-05-19 高岩 Method and system for cleaning pure titanium surface through titanium dioxide photocatalysis

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