JP2006316947A - Piston packing for painting machine - Google Patents

Piston packing for painting machine Download PDF

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Publication number
JP2006316947A
JP2006316947A JP2005142107A JP2005142107A JP2006316947A JP 2006316947 A JP2006316947 A JP 2006316947A JP 2005142107 A JP2005142107 A JP 2005142107A JP 2005142107 A JP2005142107 A JP 2005142107A JP 2006316947 A JP2006316947 A JP 2006316947A
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Japan
Prior art keywords
surface portion
sectional shape
piston
peripheral surface
width dimension
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JP2005142107A
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Japanese (ja)
Inventor
Hideo Nagaoka
秀夫 長岡
Kazumasa Nishida
和正 西田
Yoshio Azuma
吉夫 東
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Mitsubishi Cable Industries Ltd
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Mitsubishi Cable Industries Ltd
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Priority to JP2005142107A priority Critical patent/JP2006316947A/en
Priority to PCT/JP2006/309589 priority patent/WO2006123588A1/en
Publication of JP2006316947A publication Critical patent/JP2006316947A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/56—Other sealings for reciprocating rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent torsion caused by the linear reciprocation of a piston. <P>SOLUTION: The annular piston packing for a painting machine is attached to a recessed circumferential groove G formed on the outer circumference face Q of the linearly reciprocating piston P, and in a cross sectional shape, an inner circumferential face 2 corresponding to a bottom face G1 of the recessed circumferential groove G has a linear straight part 3. The width W and the height H of the cross sectional shape are set so as to be W/4≤H≤3W. In the cross sectional shape, an outer circumferential face 4 has a convex surface 5, and a radius R of curvature and the width W of the convex surface 5 are set so as to be W/5≤R≤2W. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、塗装機用ピストンパッキンに関する。   The present invention relates to a piston packing for a coating machine.

一般に、塗装機用ピストンパッキンとしては、Ｏリングが用いられてきた（例えば、特許文献１参照）。   Generally, an O-ring has been used as a piston packing for a coating machine (see, for example, Patent Document 1).

しかし、潤滑膜が形成されない状態で使用されるので、従来のＯリングでは、ピストンの直線往復運動によってねじれが発生していた。Ｏリングのねじれはリーク量の急増や偏摩耗・切断につながるものであり、この現象によって塗料と溶剤の混ざり合いや機器の作動不良といった不具合を引き起こしていた。また、このようなＯリングのねじれは不定期に発生するので、突発的あるいは過剰な頻度でＯリングを交換する必要があり、メンテナンスに多大なコストを費やしていた。
特開平１１−１２８７８４号公報 However, since it is used in a state where no lubricating film is formed, the conventional O-ring has been twisted due to the linear reciprocation of the piston. The twisting of the O-ring leads to a rapid increase in the leak amount and uneven wear / cutting, and this phenomenon causes problems such as mixing of paint and solvent and malfunction of the equipment. In addition, since such O-ring twist occurs irregularly, it is necessary to replace the O-ring suddenly or excessively, and a great cost is spent on maintenance.
JP-A-11-128784

解決しようとする課題は、塗装機用ピストンパッキンに於て、ピストンの直線往復運動によってねじれが発生し、リーク量の急増や偏摩耗・切断につながる点である。   The problem to be solved is that in the piston packing for a coating machine, twisting occurs due to the linear reciprocating motion of the piston, leading to a sudden increase in the amount of leakage and partial wear / cutting.

そこで、本発明に係る塗装機用ピストンパッキンは、直線往復運動するピストンの外周面に設けられた凹周溝に装着される環状の塗装機用ピストンパッキンに於て、横断面形状は、上記凹周溝の底面に対応する内周面部が直線状のストレート部を有するものである。   Accordingly, the piston packing for a coating machine according to the present invention is an annular coating machine piston packing mounted in a concave circumferential groove provided on the outer peripheral surface of a piston that reciprocates linearly. The inner peripheral surface portion corresponding to the bottom surface of the circumferential groove has a straight straight portion.

また、横断面形状の幅寸法Ｗと高さ寸法Ｈを、Ｗ／４≦Ｈ≦３Ｗとなるように設定したものである。
また、横断面形状に於て、外周面部が１個乃至２個の凸曲面部を有し、該凸曲面部の曲率半径と、幅寸法を、Ｗ／５≦Ｒ≦２Ｗとなるように設定したものである。
また、横断面形状に於て、外周面部が頂部から左右にしだいに降下する勾配直線部を有する三角山型であり、かつ、上記頂部が凸曲面部を有し、該凸曲面部の曲率半径と、全体の幅寸法を、Ｗ／５≦Ｒ≦２Ｗとなるように設定した。
また、横断面形状の上記ストレート部の幅寸法が、上記凹周溝の幅寸法に対して、 0.6Ｗｇ≦Ｗ3 ≦0.95Ｗｇに設定されている。 Further, the width dimension W and the height dimension H of the cross-sectional shape are set so as to satisfy W / 4 ≦ H ≦ 3W.
Further, in the cross-sectional shape, the outer peripheral surface portion has one or two convex curved surface portions, and the curvature radius and the width dimension of the convex curved surface portion are set to satisfy W / 5 ≦ R ≦ 2W. It is a thing.
Further, in the cross-sectional shape, the outer peripheral surface portion is a triangular mountain shape having a straight slope portion that gradually descends from the top to the left and right, and the top portion has a convex curved surface portion, and the radius of curvature of the convex curved surface portion. The overall width dimension was set to satisfy W / 5 ≦ R ≦ 2W.
The width dimension of the straight portion of the cross-sectional shape is, the width dimension of the concave peripheral groove, is set to 0.6Wg ≦ W 3 ≦ 0.95Wg.

本発明の塗装機用ピストンパッキンによれば、ストレート部が凹周溝の底面に常に密に接触して、ピストンの直線往復運動によるねじれを防止することができる。   According to the piston packing for a coating machine of the present invention, the straight portion always comes into close contact with the bottom surface of the concave groove, and the twist due to the linear reciprocating motion of the piston can be prevented.

図１は、本発明の第１の実施の形態の使用状態を示す。この塗装機用ピストンパッキン１は、耐溶剤性を有するふっ素ゴムやパーフロロエラストマー等の弾性体から成る。ピストンパッキン１は、環状であって、（図１の左右方向に）直線往復運動するピストンＰの外周面Ｑに設けられた凹周溝Ｇに装着される。Ａは溶剤系塗料又は水系塗料が充填される塗料室（第１ピストン室）を示す。Ｂは酢酸ブチル、キシレン等の溶剤が充填される溶剤室（第２ピストン室）を示す。対象物（図示省略）の塗装時には第２ピストン室Ｂ内の溶剤に圧力が付加されることによってピストンＰが左方向に移動して第１ピストン室Ａ内の塗料が吐出される。塗料室が空になると吐出・吸入口Ｅより新しい塗料が充填され、ピストンＰは右方向に移動する。塗装機用ピストンパッキン１は、ピストンＰを移動させる作動圧確保と流体同士の混入防止の目的で装着されている。ピストンＰはモーターまたは空気圧で移動させる場合もある。   FIG. 1 shows a use state of the first embodiment of the present invention. The piston packing 1 for a coating machine is made of an elastic body such as fluorine rubber or perfluoroelastomer having solvent resistance. The piston packing 1 is annular and is mounted in a concave groove G provided on the outer peripheral surface Q of the piston P that linearly reciprocates (in the left-right direction in FIG. 1). A indicates a paint chamber (first piston chamber) filled with solvent-based paint or water-based paint. B represents a solvent chamber (second piston chamber) filled with a solvent such as butyl acetate or xylene. When an object (not shown) is painted, pressure is applied to the solvent in the second piston chamber B, whereby the piston P moves leftward and the paint in the first piston chamber A is discharged. When the paint chamber becomes empty, new paint is filled from the discharge / suction port E, and the piston P moves in the right direction. The piston packing 1 for a coating machine is mounted for the purpose of ensuring the operating pressure for moving the piston P and preventing the fluid from mixing with each other. The piston P may be moved by a motor or air pressure.

図２の要部拡大断面図に示すように、ピストンパッキン１の横断面形状は、ピストンＰの凹周溝Ｇの底面Ｇ1 に対応する内周面部２が直線状のストレート部３を有している。ストレート部３の幅寸法Ｗ3 を全体の幅寸法Ｗの60％〜 100％に設定するが、図２ではＷ3 ＝Ｗである。
横断面形状の幅寸法Ｗと高さ寸法Ｈは、Ｗ／４≦Ｈ≦３Ｗとなるように設定されている。Ｈ＜Ｗ／４の場合、弾性反発力が小さくなる虞れがある。３Ｗ＜Ｈの場合、ピストンパッキン１を凹周溝Ｇに装着するときに大きな力を要する。 As shown in the enlarged sectional view of the main part of FIG. 2, the piston packing 1 has a cross-sectional shape in which the inner peripheral surface portion 2 corresponding to the bottom surface G 1 of the concave circumferential groove G of the piston P has a straight straight portion 3. ing. To set the width W 3 of the straight portion 3 of 60% to 100% of the total width W, but W 3 = W in FIG.
The width dimension W and the height dimension H of the cross-sectional shape are set to satisfy W / 4 ≦ H ≦ 3W. If H <W / 4, the elastic repulsion may be reduced. In the case of 3W <H, a large force is required when the piston packing 1 is mounted in the concave circumferential groove G.

横断面形状に於て、外周面部４が１個の凸曲面部５を有し、凸曲面部５の曲率半径Ｒと、幅寸法Ｗは、Ｗ／５≦Ｒ≦２Ｗとなるように設定されている。Ｒ＜Ｗ／５の場合、ピストンＰが直線往復運動する時に、無理な力が加わって外周面部４が摩耗しやすくなる虞れがある。２Ｗ＜Ｒの場合、弾性反発力が過剰に分散し、シリンダチューブ11の内周面12への接触面積が過小となって、シール性が悪くなる虞れがある。   In the cross-sectional shape, the outer peripheral surface part 4 has one convex curved surface part 5, and the radius of curvature R and the width dimension W of the convex curved surface part 5 are set to satisfy W / 5 ≦ R ≦ 2W. ing. In the case of R <W / 5, when the piston P reciprocates linearly, an excessive force may be applied and the outer peripheral surface portion 4 may be easily worn. When 2W <R, the elastic repulsion force is excessively dispersed, the contact area with the inner peripheral surface 12 of the cylinder tube 11 becomes too small, and the sealing performance may be deteriorated.

横断面形状のストレート部３の幅寸法Ｗ3 は、凹周溝Ｇの幅寸法Ｗｇに対して、 0.6Ｗｇ≦Ｗ3 ≦0.95Ｗｇに設定する。Ｗ3 ＜ 0.6Ｗｇでは、凹周溝Ｇ内で不安定となる傾向があり、逆に、0.95Ｗｇ＜Ｗ3 では、装着が困難となる傾向がある。
また、具体的には、上記幅寸法Ｗ3 は、 0.5mm≦Ｗ3 ≦10mmに設定されている。Ｗ3 ＜ 0.5mmの場合、シール効果が小さくなり、流体（塗料、溶剤）が漏れる虞れがある。10mm＜Ｗ3 の場合、ピストンパッキン１を凹周溝Ｇに装着する時に、大きな力を要する。 The width dimension W 3 of the straight section 3 having a cross-sectional shape is set to 0.6 Wg ≦ W 3 ≦ 0.95 Wg with respect to the width dimension Wg of the concave circumferential groove G. When W 3 <0.6 Wg, there is a tendency to become unstable in the concave groove G, and conversely, when 0.95 Wg <W 3 , mounting tends to be difficult.
Specifically, the width dimension W 3 is set to 0.5 mm ≦ W 3 ≦ 10 mm. When W 3 <0.5 mm, the sealing effect is reduced, and there is a possibility that fluid (paint, solvent) leaks. When 10 mm <W 3 , a large force is required when the piston packing 1 is mounted in the concave circumferential groove G.

図３は、第２の実施の形態を示す。横断面形状に於て、外周面部４が両角肩部に２個の凸曲面部５，５を有し、凸曲面部５の曲率半径Ｒと、幅寸法Ｗは、Ｗ／５≦Ｒ≦２Ｗとなるように設定されている。このように、外周面部４は、中央の直線状フラット部14と、両端の凸曲面部５，５とから成る。   FIG. 3 shows a second embodiment. In the cross-sectional shape, the outer peripheral surface portion 4 has two convex curved surface portions 5 and 5 on both corner shoulder portions, and the curvature radius R and the width dimension W of the convex curved surface portion 5 are W / 5 ≦ R ≦ 2W. It is set to become. As described above, the outer peripheral surface portion 4 includes the central linear flat portion 14 and the convex curved surface portions 5 and 5 at both ends.

図４は、第３の実施の形態を示す。横断面形状に於て、側面部６が側面凸曲面部13を有し、外周面部４に直線状フラット部14を有している。外周面部４は、従って、上記側面凸曲面部13の一部をもって構成された凸曲面部５，５と、フラット部14と、から成る。
図５は、第４の実施の形態を示す。内周面部２の両角部に勾配面部７，７を有する。図４又は図５に於て、Ｗ×60％≦Ｗ3 ≦Ｗ×95％とするのが望ましい。 FIG. 4 shows a third embodiment. In the cross-sectional shape, the side surface portion 6 has the side surface convex curved surface portion 13 and the outer peripheral surface portion 4 has the linear flat portion 14. Accordingly, the outer peripheral surface portion 4 is composed of convex curved surface portions 5 and 5 constituted by a part of the side convex curved surface portion 13 and a flat portion 14.
FIG. 5 shows a fourth embodiment. Gradient surface portions 7 and 7 are provided at both corners of the inner peripheral surface portion 2. In FIG. 4 or FIG. 5, it is desirable that W × 60% ≦ W 3 ≦ W × 95%.

図６は、第５の実施の形態を示す。外周面部４が勾配面部７，７を有し、両流れ屋根型（三角山型）に形成されている。
図７は、第６の実施の形態を示す。外周面部４及び側面部６に横断面形状が小半円山型の小突隆部８を有する。外周面部４の小突隆部８は、（図１に示した）シリンダチューブ11の内周面12に対して適度に高い面圧にて接触して、摺動摩擦抵抗が小さく、優れた密封性と耐久性を発揮する。
図８は、第７の実施の形態を示す。この図８に示すように、横断面形状に於て、外周面部４が頂部15から左右にしだいに降下する勾配直線部７，７を有し、三角山型（両流れ屋根型）であり、さらに、頂部15が曲率半径Ｒの凸曲面部５を有する。この凸曲面部15の曲率半径Ｒと、全体の幅寸法Ｗとの間に次の関係式が成立する。つまり、Ｗ／５≦Ｒ≦２Ｗが成立する。Ｒ＜Ｗ／５の場合、ピストンＰが直線往復運動する時に、無理な力が加わって外周面部４が摩耗しやすくなる虞れがある。２Ｗ＜Ｒの場合、弾性反発力が過剰に分散し、シリンダチューブ11の内周面12への接触面積が過小となって、シール性が悪くなる虞れがある。このように、（図１の）シリンダチューブ11の内周面に対して適度の高い面圧にて接触して、摺動摩擦抵抗が小さく、優れた密封性と耐久性を発揮する。 FIG. 6 shows a fifth embodiment. The outer peripheral surface portion 4 has gradient surface portions 7 and 7 and is formed in a double-flow roof type (triangular mountain shape).
FIG. 7 shows a sixth embodiment. The outer peripheral surface portion 4 and the side surface portion 6 have a small protruding portion 8 having a small semicircular mountain shape in cross section. The small protruding portion 8 of the outer peripheral surface portion 4 is in contact with the inner peripheral surface 12 of the cylinder tube 11 (shown in FIG. 1) at a moderately high surface pressure, has low sliding friction resistance, and has excellent sealing performance. And demonstrates durability.
FIG. 8 shows a seventh embodiment. As shown in FIG. 8, in the cross-sectional shape, the outer peripheral surface portion 4 has gradient straight portions 7 and 7 that gradually descend from the top portion 15 to the left and right, and is a triangular mountain type (double-flow roof type). Furthermore, the top portion 15 has a convex curved surface portion 5 having a curvature radius R. The following relational expression is established between the radius of curvature R of the convex curved surface portion 15 and the overall width dimension W. That is, W / 5 ≦ R ≦ 2W is established. In the case of R <W / 5, when the piston P reciprocates linearly, an excessive force may be applied and the outer peripheral surface portion 4 may be easily worn. When 2W <R, the elastic repulsion force is excessively dispersed, the contact area with the inner peripheral surface 12 of the cylinder tube 11 becomes too small, and the sealing performance may be deteriorated. In this manner, the inner peripheral surface of the cylinder tube 11 (of FIG. 1) is brought into contact with a moderately high surface pressure, the sliding friction resistance is small, and excellent sealing performance and durability are exhibited.

なお、本発明は、上述の図示の実施の形態に限定されず、設計変更可能であって、例えば、第１の実施の形態から第７の実施の形態の各々の内周面部２、外周面部４、側面部６のいずれかの形状を組み合わせたものとするも良い。また、外周面部４のみ又は側面部６のみが小突隆部８を有するも良いと共に、外周面部４又は側面部６に、複数個（２個以上）の小突隆部８…を配設しても、自由である。   The present invention is not limited to the illustrated embodiment described above, and can be changed in design. For example, the inner peripheral surface portion 2 and the outer peripheral surface portion of each of the first to seventh embodiments. 4. It is good also as what combined either shape of the side part 6. Further, only the outer peripheral surface portion 4 or only the side surface portion 6 may have the small protruding ridges 8, and plural (two or more) small protruding ridge portions 8 are arranged on the outer peripheral surface portion 4 or the side surface portion 6. But it ’s free.

以上のように、本発明は、直線往復運動するピストンＰの外周面Ｑに設けられた凹周溝Ｇに装着される環状の塗装機用ピストンパッキンに於て、横断面形状は、凹周溝Ｇの底面Ｇ1 に対応する内周面部２が直線状のストレート部３を有しているので、ピストンの直線往復運動によるねじれを防止することができる。従来のＯリングよりも長期にわたって安定したシール性能を発揮する。例えば、従来のＯリングの数倍から数十倍の耐久性を有する。そして、塗装品質が向上するとともに、メンテナンスコストを大幅に削減することができる。 As described above, according to the present invention, the annular cross section of the piston packing for the coating machine installed in the outer circumferential groove G provided on the outer circumferential surface Q of the piston P that reciprocates linearly has a transverse cross-sectional shape of the concave circumferential groove. since the inner peripheral surface 2 corresponding to the bottom surface G 1 of G has a straight portion 3 linear, it is possible to prevent twisting due to linear reciprocating motion of the piston. Provides stable sealing performance over a longer period than conventional O-rings. For example, it has durability several times to several tens of times that of a conventional O-ring. In addition, the coating quality can be improved and the maintenance cost can be greatly reduced.

また、横断面形状の幅寸法Ｗと高さ寸法Ｈを、Ｗ／４≦Ｈ≦３Ｗとなるように設定したので、容易にピストンパッキン１を凹周溝Ｇに装着することができるとともに、適切なシール効果を得ることができる。
また、横断面形状に於て、外周面部４が１個乃至２個の凸曲面部５を有し、凸曲面部５の曲率半径Ｒと、幅寸法Ｗを、Ｗ／５≦Ｒ≦２Ｗとなるように設定したので、弾性反発力が適度に分散されて、シール性が良い。
また、横断面形状に於て、外周面部４が頂部15から左右にしだいに降下する勾配直線部７，７を有する三角山型であり、かつ、上記頂部15が凸曲面部５を有し、該凸曲面部５の曲率半径Ｒと、全体の幅寸法Ｗを、Ｗ／５≦Ｒ≦２Ｗとなるように設定したので、弾性反発力が適度に頂部15からシリンダチューブ内面に作用して、優れたシール性（密封性）を発揮する。
また、横断面形状の上記ストレート部３の幅寸法Ｗ3 が、上記凹周溝Ｇの幅寸法Ｗｇに対して、 0.6Ｗｇ≦Ｗ3 ≦0.95Ｗｇに設定されているので、容易にピストンパッキン１を凹周溝Ｇに装着することができるとともに、適切なシール効果を得ることができる。 Moreover, since the width dimension W and the height dimension H of the cross-sectional shape are set to satisfy W / 4 ≦ H ≦ 3W, the piston packing 1 can be easily mounted in the concave circumferential groove G, A good sealing effect.
Further, in the cross-sectional shape, the outer peripheral surface portion 4 has one or two convex curved surface portions 5, and the curvature radius R and the width dimension W of the convex curved surface portion 5 are W / 5 ≦ R ≦ 2W. Since the elastic repulsive force is moderately dispersed, the sealing property is good.
Further, in the cross-sectional shape, the outer peripheral surface portion 4 is a triangular mountain shape having gradient straight portions 7 and 7 gradually descending from the top portion 15 to the left and right, and the top portion 15 has the convex curved surface portion 5. Since the curvature radius R of the convex curved surface portion 5 and the overall width dimension W are set so as to satisfy W / 5 ≦ R ≦ 2W, the elastic repulsive force acts on the cylinder tube inner surface from the top portion 15 appropriately. Excellent sealing performance (sealing performance).
Furthermore, the width dimension W 3 of the straight portions 3 of the cross-sectional shape, the width dimension Wg of the concave peripheral groove G, because it is set to 0.6Wg ≦ W 3 ≦ 0.95Wg, easily Piston seal 1 Can be mounted in the concave circumferential groove G, and an appropriate sealing effect can be obtained.

第１の実施の形態の使用状態を示す断面正面図である。It is a cross-sectional front view which shows the use condition of 1st Embodiment. 要部拡大断面図である。It is a principal part expanded sectional view. 第２の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 2nd Embodiment. 第３の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 3rd Embodiment. 第４の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 4th Embodiment. 第５の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 5th Embodiment. 第６の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 6th Embodiment. 第７の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 7th Embodiment.

符号の説明Explanation of symbols

２ 内周面部
３ ストレート部
４ 外周面部
５ 凸曲面部
７ 勾配直線部（勾配面部）
15 頂部
Ｇ 凹周溝
Ｇ1 底面
Ｈ 高さ寸法
Ｐ ピストン
Ｑ 外周面
Ｒ 曲率半径
Ｗ 幅寸法
Ｗｇ 幅寸法
Ｗ3 幅寸法 2 Inner peripheral surface portion 3 Straight portion 4 Outer peripheral surface portion 5 Convex curved surface portion 7 Gradient straight portion (gradient surface portion)
15 Top G Concave groove G 1 Bottom H Height dimension P Piston Q Outer peripheral surface R Curvature radius W Width dimension Wg Width dimension W 3 Width dimension

Claims (5)

直線往復運動するピストン（Ｐ）の外周面（Ｑ）に設けられた凹周溝（Ｇ）に装着される環状の塗装機用ピストンパッキンに於て、横断面形状は、上記凹周溝（Ｇ）の底面（Ｇ1 ）に対応する内周面部（２）が直線状のストレート部（３）を有することを特徴とする塗装機用ピストンパッキン。 In the piston packing for an annular coating machine attached to the concave circumferential groove (G) provided on the outer peripheral surface (Q) of the piston (P) that linearly reciprocates, the transverse cross-sectional shape is the concave circumferential groove (G). The piston packing for a coating machine, characterized in that the inner peripheral surface portion (2) corresponding to the bottom surface (G 1 ) has a straight straight portion (3). 横断面形状の幅寸法（Ｗ）と高さ寸法（Ｈ）を、Ｗ／４≦Ｈ≦３Ｗとなるように設定した請求項１記載の塗装機用ピストンパッキン。   The piston packing for a coating machine according to claim 1, wherein the width dimension (W) and the height dimension (H) of the cross-sectional shape are set so as to satisfy W / 4≤H≤3W. 横断面形状に於て、外周面部（４）が１個乃至２個の凸曲面部（５）を有し、該凸曲面部（５）の曲率半径（Ｒ）と、幅寸法（Ｗ）を、Ｗ／５≦Ｒ≦２Ｗとなるように設定した請求項１又は２記載の塗装機用ピストンパッキン。   In the cross-sectional shape, the outer peripheral surface portion (4) has one or two convex curved surface portions (5), and the curvature radius (R) and the width dimension (W) of the convex curved surface portion (5) are set. The piston packing for a coating machine according to claim 1 or 2, which is set to satisfy W / 5≤R≤2W. 横断面形状に於て、外周面部（４）が頂部（15）から左右にしだいに降下する勾配直線部 (７)(７) を有する三角山型であり、かつ、上記頂部（15）が凸曲面部（５）を有し、該凸曲面部（５）の曲率半径（Ｒ）と、全体の幅寸法（Ｗ）を、Ｗ／５≦Ｒ≦２Ｗとなるように設定した請求項１又は２記載の塗装機用ピストンパッキン。   In the cross-sectional shape, the outer peripheral surface part (4) is a triangular mountain shape having a slope straight part (7) (7) gradually descending from the top part (15) to the left and right, and the top part (15) is convex. The curved surface portion (5), the radius of curvature (R) of the convex curved surface portion (5) and the overall width dimension (W) are set to satisfy W / 5 ≦ R ≦ 2W. 2. Piston packing for coating machine according to 2. 横断面形状の上記ストレート部（３）の幅寸法（Ｗ3 ）が、上記凹周溝（Ｇ）の幅寸法（Ｗｇ）に対して、 0.6Ｗｇ≦Ｗ3 ≦0.95Ｗｇに設定された請求項１，２，３又は４記載の塗装機用ピストンパッキン。 Width dimension of the straight portion of the cross-sectional shape (3) (W 3) is, relative to the width dimension of the concave peripheral groove (G) (Wg), claims that have been set in 0.6Wg ≦ W 3 ≦ 0.95Wg Piston packing for a coating machine according to 1, 2, 3 or 4.
JP2005142107A 2005-05-16 2005-05-16 Piston packing for painting machine Pending JP2006316947A (en)

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JP2005142107A JP2006316947A (en) 2005-05-16 2005-05-16 Piston packing for painting machine
PCT/JP2006/309589 WO2006123588A1 (en) 2005-05-16 2006-05-12 Piston packing for application machine

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009024712A (en) * 2007-07-17 2009-02-05 Nok Corp Sealing device
WO2010128606A1 (en) * 2009-05-08 2010-11-11 Nok株式会社 Water-proof structure for opening of case of appliance
WO2017056884A1 (en) * 2015-09-30 2017-04-06 イーグル工業株式会社 Piston seal structure for piston-type accumulator
WO2017146037A1 (en) * 2016-02-26 2017-08-31 株式会社リケン Seal ring

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DE102009046975B4 (en) * 2009-11-23 2021-08-19 Robert Bosch Gmbh Sealing ring, especially for a hydraulic piston pump
JP6491885B2 (en) * 2015-01-08 2019-03-27 株式会社リケン Seal ring

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JPS6024886U (en) * 1983-07-27 1985-02-20 岩田塗装機工業株式会社 Sealing device for paint pump
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009024712A (en) * 2007-07-17 2009-02-05 Nok Corp Sealing device
WO2010128606A1 (en) * 2009-05-08 2010-11-11 Nok株式会社 Water-proof structure for opening of case of appliance
JP5321865B2 (en) * 2009-05-08 2013-10-23 Ｎｏｋ株式会社 Waterproof structure of the opening / closing part of the equipment case
WO2017056884A1 (en) * 2015-09-30 2017-04-06 イーグル工業株式会社 Piston seal structure for piston-type accumulator
WO2017146037A1 (en) * 2016-02-26 2017-08-31 株式会社リケン Seal ring
JPWO2017146037A1 (en) * 2016-02-26 2018-09-27 株式会社リケン Seal ring
CN108700199A (en) * 2016-02-26 2018-10-23 株式会社理研 Sealing ring

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