JPH07722U - Method for preventing foreign substances from adhering to rubber material for tire manufacturing - Google Patents

Method for preventing foreign substances from adhering to rubber material for tire manufacturing

Info

Publication number
JPH07722U
JPH07722U JP7262592U JP7262592U JPH07722U JP H07722 U JPH07722 U JP H07722U JP 7262592 U JP7262592 U JP 7262592U JP 7262592 U JP7262592 U JP 7262592U JP H07722 U JPH07722 U JP H07722U
Authority
JP
Japan
Prior art keywords
rubber material
foreign matter
adhering
contact
rubber
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.)
Withdrawn
Application number
JP7262592U
Other languages
Japanese (ja)
Inventor
敬之 若井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP7262592U priority Critical patent/JPH07722U/en
Publication of JPH07722U publication Critical patent/JPH07722U/en
Withdrawn legal-status Critical Current

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Abstract

(57)【要約】 【構成】タイヤ製造用ゴム材を一定方向に移動させつ
つ、ゴム材の表面に対して、接地された導電部材を連続
的に接触させる。さらに、ゴム材の近傍に電極を配置
し、ゴム材表面付近の異物吸着作用をなす電場を形成す
る。 【効果】ゴム材は、接地された導電部材を連続的に接触
させられるので、製造工程で帯電した静電気が該接触で
除去され、静電気による異物の付着が防止される。ま
た、ゴム材の近傍に電極を配置した場合には、ゴム材表
面付近の異物が該電極へと吸着されゴム材表面への付着
が防止される。
(57) [Summary] [Structure] A grounded conductive member is continuously brought into contact with the surface of the rubber material while moving the rubber material for tire production in a fixed direction. Further, an electrode is arranged in the vicinity of the rubber material to form an electric field that attracts foreign matter near the surface of the rubber material. [Effect] Since the rubber member is continuously brought into contact with the grounded conductive member, static electricity charged in the manufacturing process is removed by the contact, and foreign matter is prevented from adhering due to static electricity. Further, when the electrode is arranged near the rubber material, foreign matter near the surface of the rubber material is adsorbed to the electrode and prevented from adhering to the surface of the rubber material.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本発明は、タイヤ製造用ゴム材への異物の付着を防止する方法に関する。 The present invention relates to a method of preventing foreign matter from adhering to a rubber material for tire production.

【0002】[0002]

【従来技術及びその問題点】[Prior art and its problems]

一般に、タイヤ製造用ゴム材は、ポリマー100重量部に対してカーボンブラ ック20〜60重量部が添加されており、その体積抵抗値は、108 〜1014Ω ・cmであり、帯電防止材料の体積抵抗値107 〜105 Ω・cmに比べてかなり高 い値となっている。従って該ゴム材は、静電気を帯びやすく、タイヤ製造工程に おける種々の箇所で様々な異物を静電気によって付着させることが多い。異物の 付着を生じる工程としては、精練工程(原料混合、押出し、カレンダー加工、裁 断等を含む)、成型工程、加硫工程等である。これらの工程でゴム材に付着する 虞れのある異物としては、ゴム屑、タイヤコード、中巻布、種々のごみ等多種の ものがある。Generally, in a rubber material for tire production, 20 to 60 parts by weight of carbon black is added to 100 parts by weight of a polymer, and the volume resistance value is 10 8 to 10 14 Ω · cm, which is antistatic. The value is considerably higher than the material volume resistance value of 10 7 to 10 5 Ω · cm. Therefore, the rubber material is likely to be charged with static electricity, and various foreign substances are often attached by static electricity at various places in the tire manufacturing process. The processes that cause the adhesion of foreign matter include a scouring process (including raw material mixing, extrusion, calendering, cutting, etc.), a molding process, and a vulcanization process. There are various kinds of foreign substances such as rubber scraps, tire cords, middle wrapping cloth, various kinds of dust, etc. as foreign substances which may be attached to the rubber material in these steps.

【0003】 ゴム材の帯電防止策としては、ゴム材を加湿することが考えられるが、タイヤ コードとして使用されるスチールの錆を生じ易くなるなど品質上好ましくない。 また製造設備を帯電防止構造とすることも考えられるが、設備費が極めて高価と なる。従って、一般的には工程内を清浄に保ち、付着する虞れのある異物の存在 を極力少なくするに止まっていた。Humidification of the rubber material can be considered as an antistatic measure for the rubber material, but this is not preferable in terms of quality because the steel used as a tire cord is easily rusted. It is also possible to use a manufacturing facility with an antistatic structure, but the facility cost will be extremely high. Therefore, in general, it has been necessary to keep the inside of the process clean and to reduce the presence of foreign matter that may adhere to the process as much as possible.

【0004】 本発明の目的は、このような従来の問題点を解決し、タイヤの品質を損なうこ となく、かつ簡便にゴム材への異物の付着を防止し得る方法を提供することにあ る。An object of the present invention is to solve the above-mentioned conventional problems, and to provide a method capable of easily preventing foreign matter from adhering to a rubber material without impairing tire quality. It

【0005】[0005]

【問題点を解決するための手段】[Means for solving problems]

本発明の前記目的は、タイヤ製造用ゴム材を一定方向に移動させつつ、異物付 着を防止すべき箇所の上流側で該タイヤ製造用ゴム材の表面に対して、接地され た導電部材を、ゴム材の移動に伴って連続的に接触させることを特徴とするタイ ヤ製造用ゴム材の異物付着防止方法により達成される。 The object of the present invention is to provide a conductive member that is grounded with respect to the surface of the rubber material for tire production on the upstream side of the place where foreign matter should be prevented from adhering while moving the rubber material for tire production in a certain direction. It is achieved by a method for preventing foreign substances from adhering to a rubber material for tire production, which is characterized in that the rubber material is continuously brought into contact with the rubber material as it moves.

【0006】 該方法には更にタイヤ製造用ゴム材における異物付着を防止すべき箇所におい て該ゴム材の近傍に電極を配置し、該ゴム材表面付近の異物に対して吸着作用を なす電場を形成することを付加することができる。The method further comprises disposing an electrode in the vicinity of the rubber material at a location where the adhesion of the foreign material in the rubber material for tire production is to be prevented, and applying an electric field that exerts an adsorption action on the foreign material near the surface of the rubber material. Forming can be added.

【0007】[0007]

【実施例】【Example】

以下、本発明の実施例に付き添付図面を参照しつつ説明する。図は、タイヤ製 造工程における種々の工程に本発明を適用した例を示している。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The drawings show examples in which the present invention is applied to various steps in the tire manufacturing process.

【0008】 図1は、スチールトップ原反裁断工程への適用例を示している。スチールトッ プ原反は製造後、ポリエチレン製保護シートをその表面に張り付けられロール状 に巻かれる。この工程では、ロール11からスチールトップ原反12を一定の方 向に繰り出すと共に、保護シート13を他の方向へ剥がしつつ巻き取る。原反1 2はこの保護シート13の剥離の際に帯電する。従って、この例では保護シート 13を剥離した直後の位置において、ワイヤーブラシ1を原反の表面に接触させ ている。ワイヤーブラシ1は、図2に示すように金属製筒体2の周面に多数のワ イヤ3を放射状に立設し、筒体2の両端部をフレーム4で回転可能に支持したも のである。このワイヤーブラシ1は適宜の手段により接地されている。繰り出さ れた原反12は、裁断部14で斜めに裁断され、ジョイント部15でスチールコ ードが平行となるように裁断片が相互に接着されて長尺材とされ、巻取りローラ 16に巻かれていく。この例では、裁断部14のやや上流側からジョイント部1 5の終端部にかけて延びる電極5a、5bが原反の上下に配置されている。電極 5a、5bは共に、原反12の幅と同等か若しくはより広い幅を有した平板状で あり、原反の裁断及び接合の加工の支障とならないように、またこれらの加工や 搬送に伴う振動により原反12と接触しないように適切な距離を置いて原反に接 近して配置されている。その離反距離は通常50〜200cm程度とされる。FIG. 1 shows an example of application to a steel top original fabric cutting process. After the steel top stock is manufactured, a polyethylene protective sheet is attached to the surface and rolled into a roll. In this step, the steel top original fabric 12 is fed out from the roll 11 in a certain direction, and the protective sheet 13 is peeled off in another direction and wound up. The original 12 is charged when the protective sheet 13 is peeled off. Therefore, in this example, the wire brush 1 is brought into contact with the surface of the original fabric at a position immediately after the protective sheet 13 is peeled off. In the wire brush 1, as shown in FIG. 2, a large number of wires 3 are erected radially on a peripheral surface of a metal tubular body 2, and both ends of the tubular body 2 are rotatably supported by a frame 4. . The wire brush 1 is grounded by an appropriate means. The unwound original 12 is cut diagonally by the cutting unit 14, and the cut pieces are adhered to each other so that the steel cords are parallel to each other at the joint 15 to form a long material, which is wound on the winding roller 16. Get burned. In this example, electrodes 5a and 5b extending from a slightly upstream side of the cutting portion 14 to the terminal end portion of the joint portion 15 are arranged above and below the original fabric. The electrodes 5a and 5b are both flat plates having a width equal to or wider than the width of the material 12 so as not to interfere with the processing of cutting and joining of the material, and accompanying such processing and transportation. It is placed close to the original fabric with an appropriate distance so that it does not come into contact with the original fabric 12 due to vibration. The separation distance is usually about 50 to 200 cm.

【0009】 この工程においては、保護シート13の剥離の際に生じた原反12上の静電気 は、原反表面に接するワイヤーブラシ1を経て導出され、静電気による異物の付 着が防止される。こうして帯電のない状態とされても、空気中のごみや塵等が原 反に付着する虞がある。このような付着の虞のある異物はその下流側の電極5a 、5bに引き寄せられて原反表面に到達するのが防止され、ジョイント部15を 経た後も表面が清浄な状態で巻取りローラ16に巻き取られていく。電極5a、 5b間の電圧は、原反の幅、電極と原反との距離、付着する虞のある異物の大き さ等に応じて適宜決められるが、通常は5〜100kV程度とされる。In this step, the static electricity on the original fabric 12 generated when the protective sheet 13 is peeled off is drawn out through the wire brush 1 in contact with the surface of the original fabric, and foreign matter is prevented from being attached by the static electricity. Even if the battery is not charged in this way, dust and dirt in the air may adhere to the material. Such foreign matter that may be attached is prevented from being attracted to the electrodes 5a and 5b on the downstream side thereof and reaching the original fabric surface, and even after passing through the joint portion 15, the surface is clean and the take-up roller 16 is in a clean state. Will be wound up. The voltage between the electrodes 5a and 5b is appropriately determined according to the width of the original sheet, the distance between the original sheet and the original sheet, the size of foreign matter that may adhere, and the like, but is usually about 5 to 100 kV.

【0010】 図3は、シート材のプロファイリングを行なうカレンダーシート出し工程への 本発明の適用例を示している。この工程では、カレンダー装置21でプロファイ リングされたシート材22は自動ゲージコンベア23及び水槽24を経た後、風 噴射式ドライヤ25により乾燥され、巻取ドラム26に巻き取られる。カレンダ ー装置21においてゴム材とカレンダーロールとの接触摩擦によりゴム材に静電 気が発生する。従ってこの例では、カレンダー装置の直後にワイヤーブラシ1A を配置し静電気の除去を行なっている。シート材はドライヤ25での乾燥の後も 種々のローラ(図示せず)により搬送され、その接触の際に帯電するので、巻取 ローラ26のすぐ上流側にもワイヤーブラシ1Bを配置して静電気の除去を行な っている。更に、この例では、ワイヤーブラシ1Bのすぐ上流側及び下流側に電 極6a、6bを配置し、シート材22を経てこれらと向き合う上方の位置に電極 6cを配置し、シート材に付着する虞のある異物がシート材に到達するのを防止 している。従って巻取ローラ26には清浄な表面のシート材が巻き取られる。FIG. 3 shows an example of application of the present invention to a calendar sheet feeding step for profiling a sheet material. In this step, the sheet material 22 profiled by the calender device 21 passes through the automatic gauge conveyor 23 and the water tank 24, is then dried by the air jet dryer 25, and is wound on the winding drum 26. In the calendar device 21, electrostatic friction is generated in the rubber material due to contact friction between the rubber material and the calender roll. Therefore, in this example, the wire brush 1A is arranged immediately after the calendar device to remove static electricity. The sheet material is conveyed by various rollers (not shown) even after being dried by the dryer 25, and is charged when the sheet material comes into contact with the sheet material. Are being removed. Further, in this example, the electrodes 6a and 6b are arranged immediately upstream and downstream of the wire brush 1B, and the electrode 6c is arranged at a position above the sheet material 22 and facing the electrodes 6a and 6b. Prevents foreign substances with dirt from reaching the sheet material. Therefore, the sheet material having a clean surface is wound around the winding roller 26.

【0011】 図4は、トッピングカレンダーマシンによる加工工程への適用例を示している 。この例では、レットオフ31から繰り出されたカーカス材32が、フェスツー ン33、ドライングドラム34、タンデム型カレンダーロール35、クーリング ドラム36、及びフェスツーン37を経て、巻き取りローラ38に巻かれていく 。この工程においては、多数のローラとの接触によりカーカス材に帯電が生じる ので、図に示すようにワイヤーブラシ41a、41b、41c、41d、41e 、41fを配置して静電気を除去し、電極46a、46b、46c、46d、4 6e、46f、46gを配置して、付着する虞のある異物がカーカス材表面に到 達するのを防止している。FIG. 4 shows an example of application to a processing step by a topping calendar machine. In this example, the carcass material 32 fed from the let-off 31 is wound around a take-up roller 38 via a festoon 33, a drying drum 34, a tandem calender roll 35, a cooling drum 36, and a festoon 37. In this step, the carcass material is charged due to contact with a large number of rollers, so as shown in the figure, the wire brushes 41a, 41b, 41c, 41d, 41e, 41f are arranged to remove static electricity, and the electrode 46a, 46b, 46c, 46d, 46e, 46f, 46g are arranged to prevent foreign matter that may be attached to reach the surface of the carcass material.

【0012】 図3及び図4におけるワイヤーブラシ及び電極の配置に関しては、図1の例に おける形態が適用できる。以上の例では、ゴム材に接触する導電部材としてワイ ヤーブラシを採用したが、これに代えて周面を接触させるローラ、先端面を接触 させるシートやプレート等適宜の形態とすることができる。尤も、ワイヤーブラ シとすることにより、ゴム材への接触の際にブラシにより物理的に異物を除去で きるという利点を得ることができる。Regarding the arrangement of the wire brush and the electrodes in FIGS. 3 and 4, the form in the example of FIG. 1 can be applied. In the above examples, the wire brush is used as the conductive member that comes into contact with the rubber material, but instead of this, it is possible to take any suitable form such as a roller that comes into contact with the peripheral surface and a sheet or plate that comes into contact with the tip surface. However, the wire brush has an advantage that the foreign matter can be physically removed by the brush when the rubber material is contacted.

【0013】 このほか、タイヤ製造工程におけるゴム押出工程においては、ノズルからゴム 材を吐出する際に帯電が生じる。従ってこの工程では、吐出後のゴム材に、接地 された導電部材を連続的に接触させて静電気を除去するのが望ましい。In addition, in the rubber extrusion process in the tire manufacturing process, charging occurs when the rubber material is discharged from the nozzle. Therefore, in this step, it is desirable to remove static electricity by continuously contacting the grounded conductive member with the discharged rubber material.

【0014】[0014]

【発明の効果】【The invention's effect】

本発明方法によれば、タイヤ製造用ゴム材は、一定方向に移動されながら、接 地された導電部材を連続的に接触させられるので、製造工程における種々の原因 により帯電した静電気が該接触で除去され、静電気による異物の付着が防止され る。また、ゴム材の近傍に電極を配置して異物吸着作用をなす電場を形成した場 合には、ゴム材表面付近の異物が該電極へと吸着されゴム材表面への付着が防止 され、清浄なゴム材表面が得られる。 According to the method of the present invention, the rubber material for tire production can be brought into continuous contact with the grounded conductive member while being moved in a certain direction, so static electricity charged due to various causes in the manufacturing process can be caused by the contact. It is removed, and the adhesion of foreign matter due to static electricity is prevented. When an electrode is placed near the rubber material to form an electric field that attracts foreign matter, foreign matter near the surface of the rubber material is attracted to the electrode and prevented from adhering to the surface of the rubber material. A smooth rubber material surface can be obtained.

【図面の簡単な説明】[Brief description of drawings]

【図1】スチールトップ原反裁断工程を示す概略図であ
る。
FIG. 1 is a schematic view showing a steel top original fabric cutting step.

【図2】本発明方法に用いるワイヤーブラシ(導電部
材)の斜視図である。
FIG. 2 is a perspective view of a wire brush (conductive member) used in the method of the present invention.

【図3】カレンダーシート出し工程を示す概略図であ
る。
FIG. 3 is a schematic view showing a calendar sheet feeding step.

【図4】カレンダートッピング工程を示す概略図であ
る。
FIG. 4 is a schematic view showing a calendar topping step.

【符号の説明】[Explanation of symbols]

1、1a,1b ワイヤーブラシ(導電部材) 2 金属製ローラ 3 ワイヤー 4 支持部材 5a、5b、6a、6b、6c 電極 11 原反ロール 12 スチールトップ原反 13 保護シート 14 裁断部 15 ジョイント部 1, 1a, 1b Wire brush (conductive member) 2 Metal roller 3 Wire 4 Supporting member 5a, 5b, 6a, 6b, 6c Electrode 11 Raw fabric roll 12 Steel top raw fabric 13 Protective sheet 14 Cutting part 15 Joint part

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】タイヤ製造用ゴム材を一定方向に移動させ
つつ、異物付着を防止すべき箇所の上流側で該タイヤ製
造用ゴム材の表面に対して、接地された導電部材を、ゴ
ム材の移動に伴って連続的に接触させることを特徴とす
るタイヤ製造用ゴム材の異物付着防止方法。
1. A rubber material, which is grounded with respect to the surface of the rubber material for tire production, upstream of the location where foreign matter should be prevented from adhering, while moving the rubber material for tire production in a fixed direction. A method for preventing foreign matter from adhering to a rubber material for tire production, characterized in that the rubber material is continuously contacted as the rubber moves.
【請求項2】タイヤ製造用ゴム材における異物付着を防
止すべき箇所において該ゴム材の近傍に電極を配置し、
該ゴム材表面付近の異物に対して吸着作用をなす電場を
形成することを特徴とする請求項1に記載の異物付着防
止方法。
2. An electrode is arranged in the vicinity of a rubber material for tire production at a place where foreign matter should be prevented from adhering to the rubber material,
The foreign matter adhesion prevention method according to claim 1, wherein an electric field is formed to attract foreign matter near the surface of the rubber material.
JP7262592U 1992-10-19 1992-10-19 Method for preventing foreign substances from adhering to rubber material for tire manufacturing Withdrawn JPH07722U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7262592U JPH07722U (en) 1992-10-19 1992-10-19 Method for preventing foreign substances from adhering to rubber material for tire manufacturing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7262592U JPH07722U (en) 1992-10-19 1992-10-19 Method for preventing foreign substances from adhering to rubber material for tire manufacturing

Publications (1)

Publication Number Publication Date
JPH07722U true JPH07722U (en) 1995-01-06

Family

ID=13494762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7262592U Withdrawn JPH07722U (en) 1992-10-19 1992-10-19 Method for preventing foreign substances from adhering to rubber material for tire manufacturing

Country Status (1)

Country Link
JP (1) JPH07722U (en)

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Legal Events

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A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 19970306