JP5350664B2 - Liquid material coating method and apparatus - Google Patents

Liquid material coating method and apparatus Download PDF

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JP5350664B2
JP5350664B2 JP2008091299A JP2008091299A JP5350664B2 JP 5350664 B2 JP5350664 B2 JP 5350664B2 JP 2008091299 A JP2008091299 A JP 2008091299A JP 2008091299 A JP2008091299 A JP 2008091299A JP 5350664 B2 JP5350664 B2 JP 5350664B2
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liquid material
peripheral surface
inner peripheral
coating
disk
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JP2009240944A (en
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敏郎 松井
哲治 千田
哲也 石川
嘉宏 社本
勉 荒川
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Arai Seisakusho Co Ltd
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Description

本発明は、液状物の塗布方法および装置に係り、特に環状の内周面に非接触状態で液状物を塗布するのに好適な液状物の塗布方法および装置に関する。   The present invention relates to a liquid material coating method and apparatus, and more particularly to a liquid material coating method and apparatus suitable for coating a liquid material in a non-contact state on an annular inner peripheral surface.

環状の内周面を備えている物品としては、例えば、自動車やオートバイや種々の機械等における回転部または往復動部においてオイル等の封止流体の漏洩を防止するため用いられているオイルシールが挙げられる。   As an article provided with an annular inner peripheral surface, for example, an oil seal used for preventing leakage of a sealing fluid such as oil in a rotating part or a reciprocating part in an automobile, a motorcycle, various machines, or the like. Can be mentioned.

図７はこのような従来のオイルシールを示している。このオイルシール１は、断面形状Ｌ字状を有する金属製の補強環２を有しており、この補強環２には、この補強環２の下方を被覆するように、ゴムからなる弾性体３が一体に固着されている。この弾性体３には、前記補強環２の外周側に位置する外周面４が形成されるとともに、前記弾性体３の補強環２より内側には、上方に延在するシールリップ５が形成されており、このシールリップ５の上部内周面には、内側に向かって突出されたリップ先端部６が形成されている。また、前記シールリップ５の外周面４の前記リップ先端部６に対応する位置には、装着溝７が周方向に形成されており、この装着溝７内には、環状のスプリング８が装着されている。   FIG. 7 shows such a conventional oil seal. The oil seal 1 has a metal reinforcing ring 2 having an L-shaped cross section. The elastic ring 3 includes an elastic body 3 made of rubber so as to cover the lower side of the reinforcing ring 2. Are fixed together. The elastic body 3 is formed with an outer peripheral surface 4 positioned on the outer peripheral side of the reinforcing ring 2, and a seal lip 5 extending upward is formed inside the elastic body 3 from the reinforcing ring 2. A lip tip 6 that protrudes inward is formed on the inner peripheral surface of the seal lip 5. A mounting groove 7 is formed in the circumferential direction at a position corresponding to the lip tip 6 of the outer peripheral surface 4 of the seal lip 5, and an annular spring 8 is mounted in the mounting groove 7. ing.

このような従来のオイルシール１は、所定の円筒状のハウジング９と、軸受等により保持されこのハウジング９に対して回転または往復動（以下、回転等という）する軸１０との間に配設され、一方のハウジング９側に弾性体３の外周面４が、他方の軸１０側にシールリップ５のリップ先端部６がそれぞれ密接するように取付けられる。さらに、前記シールリップ５の装着溝７にスプリング８を装着させ、前記リップ先端部６を半径方向内方に締付けるようになされている。そして、前記シールリップ５のリップ先端部６と軸１０との間にオイルやグリス等の潤滑剤を介在させて軸１０を回転等させ、これにより、封止流体を封止するようになっている。   Such a conventional oil seal 1 is disposed between a predetermined cylindrical housing 9 and a shaft 10 which is held by a bearing or the like and rotates or reciprocates (hereinafter referred to as rotation) with respect to the housing 9. The outer peripheral surface 4 of the elastic body 3 is attached to one housing 9 side, and the lip tip 6 of the seal lip 5 is attached to the other shaft 10 side. Further, a spring 8 is mounted in the mounting groove 7 of the seal lip 5 to tighten the lip tip 6 inward in the radial direction. Then, the shaft 10 is rotated by interposing a lubricant such as oil or grease between the lip tip 6 of the seal lip 5 and the shaft 10, thereby sealing the sealing fluid. Yes.

本出願人は、このオイルシール１のシールリップ５の環状の内周面に前記潤滑剤を塗布するために、シールリップ５の内周面の必要箇所に非接触状態で所定量の潤滑剤を塗布することができ、オイルシール１による封止流体の封止を適正に行なうことができ、また、潤滑剤をシールリップ５の内周面の必要箇所のみに塗布することで、潤滑剤の無駄がなく、潤滑剤の消費量を著しく低減させることができる潤滑剤の塗布方法および装置を提案した（特許文献１参照）。   In order to apply the lubricant to the annular inner peripheral surface of the seal lip 5 of the oil seal 1, the present applicant applies a predetermined amount of lubricant in a non-contact state to a required portion of the inner peripheral surface of the seal lip 5. The sealing fluid can be properly sealed by the oil seal 1, and the lubricant is wasted by applying the lubricant only to the necessary portion of the inner peripheral surface of the seal lip 5. There has been proposed a method and apparatus for applying a lubricant that can significantly reduce the amount of lubricant consumed (see Patent Document 1).

特許第２５１１２３５号公報Japanese Patent No. 2511235

前記特許文献１に開示されている潤滑剤の塗布方法および装置においては、シールリップ５の内側に配置した塗布用円板を高速回転させることにより、塗布用円板上に供給された潤滑剤を遠心力によって塗布用円板の外周端部から飛散させてシールリップ５の環状の内周面に塗布させるものであり、シールリップ５の内周面の必要箇所に非接触状態で所定量の潤滑剤を塗布させている。   In the method and apparatus for applying a lubricant disclosed in Patent Document 1, the lubricant supplied on the application disk is rotated by rotating the application disk disposed inside the seal lip 5 at a high speed. It is scattered from the outer peripheral edge of the coating disk by centrifugal force and applied to the annular inner peripheral surface of the seal lip 5, and a predetermined amount of lubrication is made in a non-contact state on a required portion of the inner peripheral surface of the seal lip 5. The agent is applied.

ところで、近年このようなオイルシールにおいては、より安定した潤滑性を確保するために、潤滑剤の塗布領域を拡大する傾向にある。この場合、前記特許文献１に開示されている潤滑剤の塗布方法および装置においては、シールリップ５の環状の内周面に潤滑剤が塗布される塗布領域の軸方向長さを小さく絞っているため、潤滑剤の塗布領域の拡大に対応するには、二度塗りの作業が必要であった。   By the way, in recent years, in such an oil seal, in order to secure more stable lubricity, there is a tendency to expand the application area of the lubricant. In this case, in the lubricant application method and apparatus disclosed in Patent Document 1, the axial length of the application region where the lubricant is applied to the annular inner peripheral surface of the seal lip 5 is reduced. Therefore, in order to cope with the expansion of the lubricant application area, it is necessary to perform the coating operation twice.

本発明はこれらの点に鑑みてなされたものであり、潤滑剤に限らずに塗料、染料等を含む液状物を塗布媒体とし、オイルシールのシールリップに限らずに装飾用筒体等を含む環状製品の環状の内周面を塗布対象とし、当該内周面に対して塗布領域の軸方向長さを長くして、内周面に損傷を与えてしまうことがなく、しかも、少量の液状物によって当該内周面の広い領域に適正に液状物を塗布することができ、二度塗りが不要となる液状物の塗布方法および装置を提供することを目的とするものである。   The present invention has been made in view of these points, and includes a liquid material containing a paint, a dye, and the like as well as a lubricant as a coating medium, and includes a decorative cylinder and the like as well as a seal lip of an oil seal. The annular inner peripheral surface of the annular product is to be applied, and the axial length of the coating area is increased with respect to the inner peripheral surface, so that the inner peripheral surface is not damaged, and a small amount of liquid is used. It is an object of the present invention to provide a method and an apparatus for applying a liquid material that can properly apply a liquid material to a wide area of the inner peripheral surface with an object, and that does not require a second application.

前記目的を達成するため請求項１に記載の発明に係る液状物の塗布方法は、環状の内周面の軸方向長さの長い塗布領域に対して所定量の液状物を塗布するための液状物の塗布方法において、前記内周面の内径より小さい直径を有する塗布用円板に所定量の液状物を保持させ、前記塗布用円板を高速回転駆動させ、前記液状物を前記塗布用円板の液状物誘導面の外周端部に形成された前記塗布領域の軸方向長さに対応する軸方向長さを備えた飛散端縁であって前記塗布用円板の回転方向逆向きにその高さを高くするように形成されている飛散端縁より外側に飛散させて、前記内周面の前記塗布領域に所定量の液状物を非接触により塗布するようにしたことを特徴とする。 In order to achieve the above object, the liquid material application method according to the first aspect of the present invention is a liquid material for applying a predetermined amount of liquid material to an application region having a long axial length on the annular inner peripheral surface. In a method for applying an object, a predetermined amount of liquid material is held on an application disk having a diameter smaller than the inner diameter of the inner peripheral surface, the application disk is driven to rotate at high speed, and the liquid material is moved to the application circle. A scattering edge having an axial length corresponding to the axial length of the coating region formed on the outer peripheral end of the liquid material guiding surface of the plate, and in the direction opposite to the rotation direction of the coating disk A predetermined amount of liquid material is applied in a non-contact manner to the application region of the inner peripheral surface by scattering outside the scattering edge formed to increase the height .

また、請求項２に記載の発明に係る液状物の塗布方法は、前記環状の内周面が、オイルシールのシールリップの内周面とされ、前記液状物は潤滑剤とされていることを特徴とする。   According to a second aspect of the present invention, there is provided a method for applying a liquid material, wherein the annular inner peripheral surface is an inner peripheral surface of a seal lip of an oil seal, and the liquid material is a lubricant. Features.

また、請求項３に記載の発明に係る液状物の塗布装置は、環状の内周面の軸方向長さの長い塗布領域に所定量の液状物を非接触により塗布するための液状物の塗布装置において、前記内周面の内径より小さい直径を有する塗布用円板を前記内周面の内側で高速回転駆動自在に配設し、この塗布用円板に液状物を保持させる充填部を形成するとともに、当該充填部から遠心力により外側に繰り出された液状物を前記塗布領域の軸方向長さに対応する軸方向長さにおいて飛散させる飛散端縁であって前記塗布用円板の回転方向逆向きにその高さを高くするように形成されている飛散端縁を備えた液状物誘導面を形成し、この充填部に所定量の液状物を供給する液状物供給装置を配設したことを特徴とする。 According to a third aspect of the present invention, there is provided a liquid material application apparatus for applying a predetermined amount of a liquid material in a non-contact manner to an application region having a long axial length on an annular inner peripheral surface. In the apparatus, a coating disk having a diameter smaller than the inner diameter of the inner peripheral surface is disposed inside the inner peripheral surface so as to be freely rotatable at high speed, and a filling portion is formed to hold the liquid substance on the coating disk. In addition, it is a scattering edge that scatters the liquid material drawn out from the filling portion by centrifugal force at an axial length corresponding to the axial length of the application region, and the rotation direction of the application disk A liquid material guiding surface having scattering edges formed so as to increase its height in the opposite direction was formed, and a liquid material supply device for supplying a predetermined amount of liquid material to the filling portion was disposed. It is characterized by.

また、請求項４に記載の発明に係る液状物の塗布装置は、前記環状の内周面が、オイルシールのシールリップの内周面とされ、前記液状物は潤滑剤とされていることを特徴とする。 According to a fourth aspect of the present invention, there is provided the apparatus for applying a liquid material, wherein the annular inner peripheral surface is an inner peripheral surface of a seal lip of an oil seal, and the liquid material is a lubricant. Features.

請求項３に記載の本発明の液状物の塗布装置を請求項１に記載の本発明の液状物の塗布方法により作用させると、塗布用円板が高速回転し、塗布用円板の充填部に保持された液状物が遠心力により外側の液状物誘導面上に繰り出され、続いて前記塗布領域の軸方向長さに対応する軸方向長さを備えた飛散端縁であって前記塗布用円板の回転方向逆向きにその高さを高くするように形成されている飛散端縁より前記内周面に向けて飛散されて、確実に軸方向の長さが長い前記塗布領域に対して良好に液状物を塗布することができる。 When the apparatus for applying a liquid material of the present invention according to claim 3 is operated by the method for applying a liquid material of the present invention according to claim 1, the coating disk rotates at a high speed, and a filling portion of the coating disk is obtained. The liquid material held on the outer surface is guided to the outer liquid material guiding surface by centrifugal force, and subsequently is a scattering edge having an axial length corresponding to the axial length of the application region . It is scattered toward the inner peripheral surface from the scattering edge that is formed so as to increase its height in the direction opposite to the rotation direction of the disk, and reliably to the coating region having a long axial length. A liquid material can be satisfactorily applied.

また、請求項４に記載の本発明の液状物の塗布装置を請求項２に記載の本発明の液状物の塗布方法により作用させると、オイルシールのシールリップの内周面の軸方向の長さが長い塗布領域に非接触状態で液状物としての潤滑剤を塗布することができ、鋭利に形成されたシールリップのリップ先端部に損傷を与えてしまうおそれがなく、適正に必要箇所に所定量の潤滑剤を塗布してオイルシールによる封止流体の封止を適正に行なうことができる。また、潤滑剤をシールリップの内面の必要箇所のみに塗布することができるので、潤滑剤の無駄がなく、潤滑剤の消費量を著しく低減させることができるものである。 Further, when the apparatus for applying a liquid material of the present invention described in claim 4 is operated by the method for applying a liquid material of the present invention described in claim 2, the axial length of the inner peripheral surface of the seal lip of the oil seal is increased. It is possible to apply the lubricant as a liquid material in a non-contact state to a long coating area, and there is no risk of damaging the lip tip of the sharply formed seal lip, and it is properly placed in the necessary place. By applying a certain amount of lubricant, the sealing fluid can be properly sealed with an oil seal. Further, since the lubricant can be applied only to a necessary portion of the inner surface of the seal lip, there is no waste of the lubricant and the consumption of the lubricant can be significantly reduced.

以上述べたように本発明に係る液状物の塗布方法および装置は、潤滑剤に限らずに塗料、染料等を含む液状物を塗布媒体とし、オイルシールのシールリップに限らずに装飾用筒体等を含む環状製品の環状の内周面を塗布対象とし、当該内周面に対して塗布領域の軸方向長さを長くして、内周面に損傷を与えてしまうことがなく、しかも、少量の液状物によって当該内周面の広い領域に適正に液状物を塗布することができ、塗布領域の拡大に対し二度塗りを不要として一度塗りで対応できる等の効果を奏する。   As described above, the method and apparatus for applying a liquid material according to the present invention is not limited to a lubricant, but a liquid material containing paint, dye, etc. is used as an application medium, and is not limited to an oil seal seal lip, but a decorative cylinder. The annular inner peripheral surface of the annular product including the application target, the axial length of the application region is increased with respect to the inner peripheral surface, and the inner peripheral surface is not damaged, With a small amount of liquid material, the liquid material can be appropriately applied to a wide area on the inner peripheral surface, and the effect of being able to cope with the expansion of the application area by eliminating the need for a second application and the like.

以下、本発明の実施の形態を図１から図６を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to FIGS.

図１は本発明に係る液状物の塗布装置の一実施形態を示したものである。   FIG. 1 shows an embodiment of a liquid material coating apparatus according to the present invention.

本実施形態の液状物の塗布装置１１は、塗布対象である環状製品としてオイルシール１を１例として形成されており、シールリップ５のリップ先端部６からなる環状の内周面に対して、その軸方向長さの長い塗布領域Ａ（本実施形態では図７に示すオイルシール１におけるシールリップ５の内周面のほぼ全面）に所定量の液状物である潤滑剤（図示せず）を非接触により塗布するように形成されている。   The liquid material applicator 11 of the present embodiment is formed as an example of an oil seal 1 as an annular product to be applied, and with respect to the annular inner peripheral surface formed of the lip tip 6 of the seal lip 5, A predetermined amount of lubricant (not shown) is applied to the coating area A having a long axial length (in this embodiment, almost the entire inner peripheral surface of the seal lip 5 in the oil seal 1 shown in FIG. 7). It is formed so as to be applied in a non-contact manner.

この塗布装置１１には、補強環２にリップ先端部６を有するシールリップ５が形成された弾性体３を一体に固着してなるオイルシール１の前記シールリップ５の内径より小さい直径を有する塗布用円板１２が水平に配設されている。この塗布用円板１２は、図２から図４に示すように、上面の中心側には、液状物を保持させるための環状の充填溝１３が形成されており、その充填溝１３の外周側には、当該充填溝１３内から遠心力により外側に繰り出された液状物を前記塗布領域Ａの軸方向長さに対応する軸方向長さにおいて飛散させる飛散端縁１５を備えた液状物誘導面１４が形成されている。本実施形態においては、塗布用円板１２の上面を６等分する位置にそれぞれ液状物誘導面１４が形成されている。各液状物誘導面１４は、塗布用円板１２の回転方向（図２および図３における矢印方向参照）と逆向きに飛散端縁１５の高さを高くするように形成されている。本実施形態においては、液状物誘導面１４は傾斜角θ１が小さい緩勾配の傾斜面１４ａとして形成されている。また、緩勾配の傾斜面１４ａの最頂部と隣の緩勾配の傾斜面１４ａの最低部との間を傾斜角θ２が大きい急勾配の傾斜面１４ｂによって連結している。 The coating device 11 has a diameter smaller than the inner diameter of the seal lip 5 of an oil seal 1 formed by integrally fixing an elastic body 3 in which a seal lip 5 having a lip tip 6 is formed on a reinforcing ring 2. A working disk 12 is disposed horizontally. As shown in FIGS. 2 to 4, the coating disk 12 is formed with an annular filling groove 13 for holding a liquid material on the center side of the upper surface, and the outer peripheral side of the filling groove 13. The liquid material guiding surface is provided with a scattering edge 15 for scattering the liquid material fed out from the inside of the filling groove 13 by centrifugal force at an axial length corresponding to the axial length of the application region A. 14 is formed. In the present embodiment, the liquid material guiding surfaces 14 are formed at positions that divide the upper surface of the coating disk 12 into six equal parts. Each liquid material guiding surface 14 is formed so as to increase the height of the scattering edge 15 in the direction opposite to the rotation direction of the coating disk 12 (see the arrow direction in FIGS. 2 and 3). In the present embodiment, the liquid material guiding surface 14 is formed as a gently sloping inclined surface 14a having a small inclination angle θ1. Further, a steeply inclined surface 14b having a large inclination angle θ2 is connected between the top of the gently inclined inclined surface 14a and the lowest part of the adjacent gently inclined inclined surface 14a.

また、塗布用円板１２の中心には、上方に延在する回転軸１６が取付けられており、この回転軸１６には、例えば、エアモータからなり、２００００〜３００００ｒ．ｐ．ｍ．程度の高速回転駆動が可能なモータ１７が接続されている。   In addition, a rotating shaft 16 extending upward is attached to the center of the coating disc 12, and the rotating shaft 16 is composed of, for example, an air motor and has a speed of 20000 to 30000 r. p. m. A motor 17 that can be driven to rotate at a high speed is connected.

また、塗布用円板１２の上方には、塗布用円板１２の充填溝１３に液状物を供給するための液状物供給装置１８が配設されており、この液状物供給装置１８は、グリス等の所定の液状物（オイルシール用の潤滑剤）を貯留する貯留タンク１９を有している。液状物供給装置１８には、液状物を充填溝１３に滴下させるための吐出ノズル２０が配設されており、この吐出ノズル２０の基部には、例えば、電磁弁等からなり貯留タンク１９の所定量の液状物を吐出ノズル２０に送るように開閉動作される吐出コントローラ２１が配設されている。さらに、液状物供給装置１８には、貯留タンク１９の液状物を吐出ノズル２０から吐出させるためのポンプ２２が配設されている。なお、ポンプ２２に代えて、図示しないエア源等により駆動流体を導くことにより、液状物を吐出ノズル２０から吐出させるようにしてもよい。 In addition, a liquid material supply device 18 for supplying a liquid material to the filling groove 13 of the application disk 12 is disposed above the application disk 12. The liquid material supply device 18 is made of grease. And a storage tank 19 for storing a predetermined liquid material (oil seal lubricant). The liquid supply device 18 is provided with a discharge nozzle 20 for dropping the liquid material into the filling groove 13. The base of the discharge nozzle 20 is formed of, for example, an electromagnetic valve or the like in the storage tank 19. A discharge controller 21 that is opened and closed to send a fixed amount of liquid material to the discharge nozzle 20 is provided. Further, the liquid supply device 18 is provided with a pump 22 for discharging the liquid in the storage tank 19 from the discharge nozzle 20. Instead of the pump 22, the liquid material may be discharged from the discharge nozzle 20 by guiding the driving fluid with an air source (not shown) or the like.

また、塗布用円板１２の下方には、オイルシール１を昇降動作させる昇降装置２３が配設されており、この昇降装置２３は、昇降シリンダ２４により昇降動作される保持アーム２５を有している。また、保持アーム２５の先端部には、オイルシール１の下面および外周面部分を保持する保持体２６が固着されている。   Further, an elevating device 23 that moves the oil seal 1 up and down is disposed below the application disk 12. The elevating device 23 includes a holding arm 25 that is moved up and down by a lifting cylinder 24. Yes. A holding body 26 that holds the lower surface and the outer peripheral surface portion of the oil seal 1 is fixed to the distal end portion of the holding arm 25.

更に、液状物の塗布装置１１には、制御回路２７が配設されており、この制御回路２７により、モータ１７、液状物供給装置１８の吐出コントローラ２１、ポンプ２２および昇降シリンダ２４をそれぞれ駆動制御するようにされている。   Further, the liquid material coating apparatus 11 is provided with a control circuit 27, and the control circuit 27 drives and controls the motor 17, the discharge controller 21 of the liquid material supply device 18, the pump 22, and the elevating cylinder 24. Have been to.

次に、本実施形態の塗布装置１１を用いた液状物の塗布方法について説明する。   Next, a liquid coating method using the coating apparatus 11 of this embodiment will be described.

本実施形態においては、貯留タンク１９に所望の液状物（オイルシール用の潤滑剤）を充填し、昇降装置２３の保持体２６に所望のオイルシール１を保持させ、昇降シリンダ２４を動作させて保持アーム２５を上昇させることにより、オイルシール１のシールリップ５のリップ先端部６の内周面を塗布用円板１２の外周側に位置させる。   In the present embodiment, the storage tank 19 is filled with a desired liquid substance (lubricant for oil seal), the desired oil seal 1 is held by the holding body 26 of the lifting device 23, and the lifting cylinder 24 is operated. By raising the holding arm 25, the inner peripheral surface of the lip tip 6 of the seal lip 5 of the oil seal 1 is positioned on the outer peripheral side of the coating disk 12.

この状態で、制御回路２７により、ポンプ２２を動作させるとともに、吐出コントローラ２１を動作させて所定量の液状物を吐出ノズル２０から塗布用円板１２の充填溝１３に吐出させる。その後、モータ１７を動作させることにより、塗布用円板１２を瞬時に高速回転させる。この塗布用円板１２の高速回転により、充填溝１３内に保持された液状物は、その遠心力により外側の液状物誘導面１４の緩勾配の傾斜面１４ａ上に繰り出され、続いて当該緩勾配の傾斜面１４ａ上を全域に亘るように外側に誘導され、最終的に塗布領域Ａ（図７参照）の軸方向長さに対応する軸方向長さを備えた飛散端縁１５からシールリップ５のリップ先端部６の内周面に向けて飛散されて塗布領域Ａに均一に塗布される。この際、液状物誘導面１４の傾斜面１４ａが塗布用円板１２の回転方向逆向きに飛散端縁１５の高さを高くするように形成されているので、確実に軸方向の長さが長い塗布領域Ａに対して良好に液状物を均一に塗布することができる。   In this state, the control circuit 27 operates the pump 22 and also operates the discharge controller 21 to discharge a predetermined amount of liquid material from the discharge nozzle 20 to the filling groove 13 of the coating disk 12. Thereafter, by operating the motor 17, the coating disk 12 is instantaneously rotated at high speed. Due to the high-speed rotation of the coating disc 12, the liquid material held in the filling groove 13 is fed out onto the gentle inclined surface 14a of the outer liquid material guiding surface 14 by the centrifugal force, and then the gentle A seal lip is formed from the scattering edge 15 which is guided outwardly over the inclined surface 14a of the gradient and finally has an axial length corresponding to the axial length of the application region A (see FIG. 7). 5 is scattered toward the inner peripheral surface of the lip tip 6 and uniformly applied to the application region A. At this time, since the inclined surface 14a of the liquid material guiding surface 14 is formed so as to increase the height of the scattering edge 15 in the direction opposite to the rotation direction of the coating disk 12, the length in the axial direction is surely increased. The liquid material can be uniformly and uniformly applied to the long application region A.

また、本実施形態をオイルシールに対して潤滑剤を塗布することについて特化すると、オイルシール１のシールリップ５の内周面の軸方向の長さが長い塗布領域Ａに非接触状態で液状物としての潤滑剤を塗布することができ、鋭利に形成されたシールリップ５のリップ先端部６に損傷を与えてしまうおそれがなく、適正に必要箇所に所定量の潤滑剤を塗布してオイルシール１による封止流体の封止を適正に行なうことができる。また、潤滑剤をシールリップ５の内周面の必要箇所のみに塗布することができるので、潤滑剤の無駄がなく、潤滑剤の消費量を著しく低減させることができるものである。   Further, when the present embodiment is specialized for applying the lubricant to the oil seal, the liquid is applied in a non-contact state to the application region A in which the axial length of the inner peripheral surface of the seal lip 5 of the oil seal 1 is long. The lubricant as an object can be applied, and there is no risk of damaging the lip tip 6 of the seal lip 5 formed sharply. Sealing of the sealing fluid by the seal 1 can be performed appropriately. Further, since the lubricant can be applied only to a necessary portion of the inner peripheral surface of the seal lip 5, there is no waste of the lubricant and the consumption of the lubricant can be remarkably reduced.

なお、塗布用円板１２は、図５および図６に示すように、正逆回転のいずれの回転方向においても軸方向の長さが長い塗布領域Ａに対して良好に液状物を均一に塗布することができるように形成してもよい。具体的には図５および図６に示すように、中心側の充填溝１３から外側に径方向外側に向けて高さが高くなるテーパ面２８を形成し、更に周方向を６等分する位置にそれぞれ正逆回転方向に対称形状の椀の一部を形成する凹部からなる液状物誘導面１４を径方向外側に向けて深さが深くなるように形成し、各液状物誘導面１４の塗布用円板１２の外周面との交点を飛散端縁１５としたものである。この飛散端縁１５の最低位置と最高位置との高低差を前記塗布領域Ａの高さと同一とすることにより、塗布用円板１２の正逆回転のいずれの回転方向においても軸方向の長さが長い塗布領域Ａに対して良好に液状物を均一に塗布することができる。   As shown in FIG. 5 and FIG. 6, the application disc 12 applies the liquid material uniformly and uniformly to the application region A having a long axial length in both the forward and reverse rotation directions. You may form so that it can do. Specifically, as shown in FIGS. 5 and 6, a position where a tapered surface 28 whose height increases radially outward from the center-side filling groove 13 and further divides the circumferential direction into six equal parts is formed. Each of the liquid material guiding surfaces 14 is formed by forming a liquid material guiding surface 14 formed of a concave portion that forms a part of a symmetrical ridge in the forward / reverse rotation direction so that the depth increases toward the radially outer side. The intersection with the outer peripheral surface of the working disk 12 is a scattering edge 15. By making the height difference between the lowest position and the highest position of the scattering edge 15 the same as the height of the application area A, the length in the axial direction in any of the forward and reverse rotation directions of the application disk 12 is achieved. The liquid material can be uniformly and uniformly applied to the coating area A having a long length.

また、前記実施形態においては、オイルシールに潤滑剤を塗布する場合について説明したが、塗布媒体としての液状物としては潤滑剤に限らずに塗料、染料等を含むものであり、塗布対象としてはオイルシールのシールリップに限らずに装飾用筒体等を含む環状製品の環状の内周面を含むものである。   In the embodiment, the case where the lubricant is applied to the oil seal has been described. However, the liquid material as the application medium includes not only the lubricant but also a paint, a dye, and the like. Not only the seal lip of the oil seal but also an annular inner peripheral surface of an annular product including a decorative cylinder and the like.

また、本発明は前記各実施形態に限定されるものではなく、必要に応じて種々変更することが可能である。   The present invention is not limited to the above-described embodiments, and various modifications can be made as necessary.

本発明に係る液状物の塗布装置の一実施例を示す概略構成図The schematic block diagram which shows one Example of the coating device of the liquid substance which concerns on this invention 図１の塗布用円板を示す斜視図The perspective view which shows the application disc of FIG. 図２の塗布用円板を示す平面図FIG. 2 is a plan view showing the coating disk of FIG. 図２の塗布用円板を示す正面図Front view showing the application disk of FIG. 本発明の他の塗布用円板を示す平面図The top view which shows the other disc for application of the present invention 図５の塗布用円板を示す正面図Front view showing the coating disk of FIG. 従来の一般的なオイルシールを示す縦断面図Longitudinal sectional view showing a conventional general oil seal

符号の説明Explanation of symbols

１ オイルシール
２ 補強環
５ シールリップ
１１ 液状物の塗布装置
１２ 塗布用円板
１３ 充填溝
１４ 液状物誘導面
１５ 飛散端縁
１７ モータ
１８ 液状物供給装置 DESCRIPTION OF SYMBOLS 1 Oil seal 2 Reinforcement ring 5 Seal lip 11 Liquid material applicator 12 Coating disc 13 Filling groove 14 Liquid material guide surface 15 Splashing edge 17 Motor 18 Liquid material supply device

Claims (4)

環状の内周面の軸方向長さの長い塗布領域に対して所定量の液状物を塗布するための液状物の塗布方法において、
前記内周面の内径より小さい直径を有する塗布用円板に所定量の液状物を保持させ、前記塗布用円板を高速回転駆動させ、前記液状物を前記塗布用円板の液状物誘導面の外周端部に形成された前記塗布領域の軸方向長さに対応する軸方向長さを備えた飛散端縁であって前記塗布用円板の回転方向逆向きにその高さを高くするように形成されている飛散端縁より外側に飛散させて、前記内周面の前記塗布領域に所定量の液状物を非接触により塗布するようにしたことを特徴とする液状物の塗布方法。 In the liquid material application method for applying a predetermined amount of liquid material to the application region having a long axial length of the annular inner peripheral surface,
A coating material disk having a diameter smaller than the inner diameter of the inner peripheral surface holds a predetermined amount of liquid material, the coating disk is rotated at high speed, and the liquid material is guided to a liquid material guide surface of the coating disk. A scattering edge having an axial length corresponding to the axial length of the coating region formed at the outer peripheral edge of the coating disk so as to increase its height in the direction opposite to the rotation direction of the coating disk. A liquid material coating method, wherein a predetermined amount of liquid material is applied in a non-contact manner to the application region of the inner peripheral surface by being scattered outside the scattering edge formed on the inner surface. 前記環状の内周面は、オイルシールのシールリップの内周面とされ、前記液状物は潤滑剤とされていることを特徴とする請求項１に記載の液状物の塗布方法。   2. The method for applying a liquid material according to claim 1, wherein the annular inner peripheral surface is an inner peripheral surface of a seal lip of an oil seal, and the liquid material is a lubricant. 環状の内周面の軸方向長さの長い塗布領域に所定量の液状物を非接触により塗布するための液状物の塗布装置において、前記内周面の内径より小さい直径を有する塗布用円板を前記内周面の内側で高速回転駆動自在に配設し、この塗布用円板に液状物を保持させる充填部を形成するとともに、当該充填部から遠心力により外側に繰り出された液状物を前記塗布領域の軸方向長さに対応する軸方向長さにおいて飛散させる飛散端縁であって前記塗布用円板の回転方向逆向きにその高さを高くするように形成されている飛散端縁を備えた液状物誘導面を形成し、この充填部に所定量の液状物を供給する液状物供給装置を配設したことを特徴とする液状物の塗布装置。 In a liquid material application apparatus for non-contact application of a predetermined amount of liquid material to an application region having a long axial length of an annular inner peripheral surface, a coating disk having a diameter smaller than the inner diameter of the inner peripheral surface Is disposed inside the inner peripheral surface so as to be freely rotatable at high speed, and a filling portion for holding the liquid material on the coating disc is formed, and the liquid material fed out by centrifugal force from the filling portion is A scattering edge that is scattered at an axial length corresponding to the axial length of the application region, and is formed to increase its height in the direction opposite to the rotation direction of the application disk. A liquid material applicator characterized in that a liquid material supply surface is provided, and a liquid material supply device for supplying a predetermined amount of liquid material to the filling portion is disposed. 前記環状の内周面は、オイルシールのシールリップの内周面とされていることを特徴とする請求項３に記載の液状物の塗布装置。   4. The liquid material applicator according to claim 3, wherein the annular inner peripheral surface is an inner peripheral surface of a seal lip of an oil seal.
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