JPH06100208B2 - Fluid pressure cylinder - Google Patents
Fluid pressure cylinderInfo
- Publication number
- JPH06100208B2 JPH06100208B2 JP62136372A JP13637287A JPH06100208B2 JP H06100208 B2 JPH06100208 B2 JP H06100208B2 JP 62136372 A JP62136372 A JP 62136372A JP 13637287 A JP13637287 A JP 13637287A JP H06100208 B2 JPH06100208 B2 JP H06100208B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- movable ring
- hole
- port
- cylinder tube
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、ピストンをシリンダチユーブの所望の位置か
ら減速し、シリンダチユーブの端部で静かに停止させる
ことができるようにした流体圧シリンダに関する。Description: FIELD OF THE INVENTION The present invention relates to a fluid pressure cylinder capable of decelerating a piston from a desired position of the cylinder tube and quietly stopping at the end of the cylinder tube.
従来の技術及び発明が解決しようとする問題点 従来、クツシヨン機構を内蔵する流体圧シリンダとして
は、そのヘツドカバーまたはロツドカバーの、流体が供
給または排出されるポートに連通して形成された嵌合孔
に、ピストンまたはピストンロツドに固設した嵌入部を
気密に嵌入させて、ピストンとカバーとの間に閉じ込め
られた流体を、カバーに形成したバイパス孔の絞り弁を
通して少量ずつポートへ排出することにより、ピストン
を減速してカバーに緩速度で当接させるようにしたもの
が用いられていたが、このような流体圧シリンダは、ピ
ストンの減速をシリンダの両端部付近でしか行うことが
できず、さらに手前の位置から減速するように調整する
ことはできなかつた。Conventional problems and problems to be solved by the invention Conventionally, as a fluid pressure cylinder having a built-in cushion mechanism, a fitting hole formed in a head cover or a rod cover of the fluid pressure cylinder is connected to a port through which fluid is supplied or discharged. The piston or piston rod is fitted with a fitting portion airtightly, and the fluid trapped between the piston and the cover is discharged little by little to the port through the throttle valve of the bypass hole formed in the cover. A fluid pressure cylinder was used to decelerate and bring it into contact with the cover at a slow speed.However, such a fluid pressure cylinder can decelerate the piston only near both ends of the cylinder. It could not be adjusted to slow down from the position.
問題点を解決するための手段 本発明は上記問題点を解決するための手段として、非磁
性材からなるシリンダチユーブ内に、ピストンまたはピ
ストンロツドに固設した嵌入部と気密に嵌合する中心孔
を形成するとともに偏心位置に一面から他面へ貫通する
小径の絞り孔を形成してなる可動リングを気密かつ摺動
自由に嵌装し、シリンダチユーブの外面に、可動リング
との間に磁気吸引力を生ずる磁気吸引部材を移動調節可
能に取り付け、かつ、シリンダチユーブの端部に被着し
たポート付きのカバーに嵌入部が気密に嵌合する嵌合孔
をポートに連通させて形成するとともにそのカバーの内
端面からポートに連通する絞り付きのバイパス孔を形成
した構成とした。Means for Solving the Problems As a means for solving the above problems, the present invention provides a cylinder tube made of a non-magnetic material with a central hole that is hermetically fitted to a fitting portion fixed to a piston or a piston rod. A movable ring, which is formed and has a small-diameter throttle hole penetrating from one surface to the other surface at an eccentric position, is airtightly and slidably fitted, and the magnetic attraction force between the outer surface of the cylinder tube and the movable ring. A magnetic attraction member that causes movement is movably adjustable, and a fitting hole is formed in the cover with a port attached to the end of the cylinder tube so that the fitting portion fits airtightly and is communicated with the port. A bypass hole with a throttle is formed so as to communicate with the port from the inner end surface of the.
発明の作用及び効果 本発明は上記構成になり、磁気吸引部材をシリンダチユ
ーブに沿つて移動させると、相互の磁気吸引力によつて
シリンダチユーブ内の可動リングが吸引されて移動する
ため、その位置を調節することができるのであり、ピス
トンまたはピストンロツドに固設した嵌入部が可動リン
グの中心孔に嵌入すると、ピストンと可動リングとの間
に閉じ込められて圧力の上昇した流体が小径の絞り孔を
通つて少量ずつ流出することにより、ピストンが緩速度
で移動して可動リングに静かに当接し可動リングがピス
トンとともに低速度で移動するのであつて、可動リング
の位置を変えることによつてピストンの減速を開始する
位置を任意に調節することができるという効果がある。Advantageous Effects and Effects of the Invention The present invention has the above-mentioned configuration, and when the magnetic attraction member is moved along the cylinder tube, the movable ring in the cylinder tube is attracted and moved by the mutual magnetic attraction force, and therefore the position thereof is improved. When the fitting part fixed to the piston or the piston rod is fitted into the center hole of the movable ring, the fluid that is trapped between the piston and the movable ring and whose pressure has risen flows through the small-diameter throttle hole. As the piston moves at a slow speed and gently abuts the movable ring and moves at a low speed along with the piston by flowing out through it little by little, the piston moves by changing the position of the movable ring. There is an effect that the position where deceleration is started can be arbitrarily adjusted.
実施例 以下、本発明を空気圧シリンダに適用した一実施例を添
付図面に基づいて説明する。Embodiment An embodiment in which the present invention is applied to a pneumatic cylinder will be described below with reference to the accompanying drawings.
図において、１は、非磁性材料からなるシリンダチユー
ブであつて、その内部に緊密かつ摺動自由に嵌装した非
磁性材料からなるピストン２に、ピストンロツド３が固
着されてロツドカバー４に貫通され、このピストンロツ
ド３のピストン２への固着部分の外周に径の大きい嵌入
部５が形成され、第１図に鎖線で示すように、ピストン
ロツド３が突出して、その嵌入部５が、ロツドカバー４
の、空気が供給または排出されるポート32に連通して形
成された嵌合孔７に嵌入すると、その孔縁のパツキン６
によりピストン２とロツドカバー４との間に閉じ込めら
れる空気の圧力によりピストン２が減速され、その空気
がロツドカバー４のバイパス孔８と絞り弁９を通つて少
量ずつポート32に流出することによりピストン２が低速
度で移動するようになつている。ピストン２のヘツドカ
バー13側には円柱形の嵌入部10が同心に形成され、一
方、ヘツドカバー13には、嵌入部10が嵌入する嵌合孔14
が、その奥端を空気が供給または排出されるポート31に
連通して形成されて、その孔縁に嵌入部10に密嵌するパ
ツキン15が嵌着されているとともに、嵌合孔14に連通す
る絞り弁11付きのバイパス孔12が形成されており、この
ヘツドカバー13とピストン２の間には、磁性材料からな
り嵌入部10が貫通する中心孔21を形成してなる可動リン
グ20が、シリンダチユーブ１に対して気密かつ摺動自由
に嵌装されて、その中心孔21のピストン２側の孔縁に嵌
入部10に密嵌するパツキン22が嵌着され、その可動リン
グ20には、中心孔21から偏心した位置に、ピストン２側
とヘツドカバー13側を連通する小径の絞り孔23が形成さ
れており、また、シリンダチユーブ１の外周には、保持
体26内に収容された環形をなす永久磁石25がシリンダチ
ユーブ１の長さ方向の摺動を自由に嵌装され、また、ヘ
ツドカバー13の外周に突設した鍔28に形成した支持孔29
に、シリンダチユーブ１と平行なねじ棒30が、回転自由
に、かつ、長さ方向の移動不能に支持されて、このねじ
棒30が、永久磁石25の保持体26に形成された雌ねじ孔27
に螺合されていて、常には、永久磁石25の磁力により可
動リング20が吸引されて一定の位置に保持されるように
なつている。In the figure, reference numeral 1 denotes a cylinder tube made of a non-magnetic material, a piston 2 made of a non-magnetic material tightly and slidably fitted therein, a piston rod 3 fixed thereto and penetrated by a rod cover 4, A fitting portion 5 having a large diameter is formed on the outer periphery of the portion where the piston rod 3 is fixed to the piston 2, and the piston rod 3 protrudes as shown by the chain line in FIG.
When it is fitted into the fitting hole 7 formed in communication with the port 32 through which air is supplied or discharged, the packing 6 of the hole edge is inserted.
Due to this, the piston 2 is decelerated by the pressure of the air trapped between the piston 2 and the rod cover 4, and the air passes little by little through the bypass hole 8 of the rod cover 4 and the throttle valve 9 into the port 32, so that the piston 2 is It is designed to move at low speed. A cylindrical fitting portion 10 is concentrically formed on the head cover 13 side of the piston 2, while a fitting hole 14 into which the fitting portion 10 is fitted is formed in the head cover 13.
Is formed so that its rear end communicates with a port 31 through which air is supplied or discharged, and a packing 15 that fits tightly into the fitting portion 10 is fitted to the hole edge and communicates with the fitting hole 14. A bypass hole 12 with a throttle valve 11 is formed, and between the head cover 13 and the piston 2, a movable ring 20 formed of a central hole 21 made of a magnetic material and through which the fitting portion 10 penetrates is formed. A packing 22 that is airtightly and slidably fitted to the tube 1 and that fits tightly to the fitting portion 10 is fitted to the hole edge of the center hole 21 on the piston 2 side. A small-diameter throttle hole 23 that communicates the piston 2 side and the head cover 13 side is formed at a position eccentric from the hole 21, and the outer periphery of the cylinder tube 1 has an annular shape housed in a holder 26. The permanent magnet 25 automatically slides along the length of the cylinder tube 1. Is fitted to, also, support holes 29 formed in a flange 28 projecting from the outer periphery of Hetsudokaba 13
In addition, a screw rod 30 parallel to the cylinder tube 1 is rotatably and immovably supported in the length direction, and the screw rod 30 is formed in a holding body 26 of the permanent magnet 25 with a female screw hole 27.
The movable ring 20 is always attracted by the magnetic force of the permanent magnet 25 and held at a fixed position.
次に、本実施例の作用を説明する。Next, the operation of this embodiment will be described.
本実施例の空気圧シリンダを図示しない機械装置等に取
り付けた後に、ねじ棒30を回転して永久磁石25を移動さ
せることにより、可動リング20を所定の位置に移動さ
せ、この状態で、ロツドカバー４のポート32から空気を
供給すると、ヘツドカバー13のポート31から空気が排出
しつつピストン２が図の右方向に移動し、その嵌入部10
が可動リング20の中心孔21内に進入すると、その孔縁の
パツキン22によつてピストン２と可動リング20の間に空
気が閉じ込められて、その圧力によりピストン２が減速
され、閉じ込められた空気が絞り孔23を通つて少量ずつ
ヘツドカバー13側へ流出するのにともなつて、ピストン
２が緩速度で可動リング20に接近して静かに当接するの
であり、ピストン２と可動リング20が、永久磁石25の吸
引力に抗して低速で一体となつて移動し、嵌入部10の可
動リング20を貫通して突き出た端部がヘツドカバー13の
嵌合孔14に嵌入すると、その孔縁のパツキン15により可
動リング20とヘツドカバー13との間に空気が閉じ込めら
れて、その圧力によりピストン２と可動リング20がさら
に減速され、閉じ込められた空気が、バイパス孔12の絞
り弁11を通ることにより、少量ずつポート31に流出し
て、ピストン２と可動リング20が静かにヘツドカバー13
に当接する。この状態で、ポート31から空気を供給する
とともにロツドカバー４のポート32から空気を排出する
と、ピストン２と可動リング20が一体となつて上記と逆
方向に移動し、可動リング20は、元位置に復帰すると永
久磁石25の吸引力によつて移動を停止し、一方、ピスト
ン２は、嵌入部10の端面に作用する空気圧により、可動
リング20から離間して、可動リング20との間の空隙内に
絞り孔23を通して空気を流入させつつ低速で移動し、嵌
入部10が可動リング20の中心孔21から抜けた後に、高速
で移動する。After the pneumatic cylinder of this embodiment is attached to a mechanical device (not shown) or the like, the screw rod 30 is rotated to move the permanent magnet 25, thereby moving the movable ring 20 to a predetermined position. In this state, the rod cover 4 is moved. When air is supplied from the port 32 of the head cover 13, the piston 2 moves to the right in the figure while the air is discharged from the port 31 of the head cover 13, and the fitting portion 10
When the air enters into the center hole 21 of the movable ring 20, air is trapped between the piston 2 and the movable ring 20 by the packing 22 at the edge of the hole, and the piston 2 is decelerated by the pressure to trap the trapped air. As the gas gradually flows out through the throttle hole 23 toward the head cover 13 side, the piston 2 approaches the movable ring 20 at a slow speed and quietly abuts, so that the piston 2 and the movable ring 20 become permanent. When the end portion of the insertion portion 10 that protrudes through the movable ring 20 is inserted into the fitting hole 14 of the head cover 13, it moves at a low speed against the attractive force of the magnet 25 and integrally moves. Air is confined between the movable ring 20 and the head cover 13 by 15, the pressure of the piston 2 and the movable ring 20 is further decelerated, and the confined air passes through the throttle valve 11 of the bypass hole 12, Small amount One flows out the port 31, the piston 2 and the movable ring 20 is gently Hetsudokaba 13
Abut. In this state, when air is supplied from the port 31 and air is discharged from the port 32 of the rod cover 4, the piston 2 and the movable ring 20 integrally move and move in the opposite direction to the original position of the movable ring 20. When returning, the movement is stopped by the attractive force of the permanent magnet 25, while the piston 2 is separated from the movable ring 20 by the air pressure acting on the end surface of the fitting portion 10 and inside the gap between the movable ring 20 and the movable ring 20. While moving air through the throttle hole 23, it moves at a low speed, and after the fitting portion 10 comes out of the center hole 21 of the movable ring 20, moves at a high speed.
本実施例においては、可動リング20と永久磁石25をピス
トン２とヘツドカバー13の間に取り付けたが、使用条件
に応じて、ピストン２とロツドカバー４の間に取り付け
たり、あるいは、二組の可動リング20と永久磁石25をピ
ストン２の両側に取り付けるようにしてもよい。In this embodiment, the movable ring 20 and the permanent magnet 25 are mounted between the piston 2 and the head cover 13, but depending on the usage conditions, they may be mounted between the piston 2 and the rod cover 4, or two sets of movable rings. The permanent magnet 20 and the permanent magnet 25 may be attached to both sides of the piston 2.
また、可動リング20を保持するのに、可動リング20側に
永久磁石を固定し、シリンダチユーブ１の外面に、永久
磁石25に替えて磁性体を移動調節可能に取り付けてもよ
く、また、双方に永久磁石を取り付けて互いに吸引させ
るようにしてもよい。Further, in order to hold the movable ring 20, a permanent magnet may be fixed to the movable ring 20 side, and a magnetic body may be movably attached to the outer surface of the cylinder tube 1 in place of the permanent magnet 25. Permanent magnets may be attached to the two to attract each other.
上記した実施例は空気圧シリンダに適用したものである
が、本発明は、油圧シリンダにも適用することができる
ものである。Although the embodiment described above is applied to a pneumatic cylinder, the present invention can also be applied to a hydraulic cylinder.
添付図面は本発明の一実施例を示し、第１図は断面図、
第２図及び第３図は、夫々、作動状態をあらわす部分断
面図である。 1:シリンダチユーブ、2:ピストン、3:ピストンロツド、
５、10:嵌入部、20:可動リング、21:中心孔、23:絞り
孔、25:永久磁石、30:ねじ棒The accompanying drawings show an embodiment of the present invention, FIG. 1 is a sectional view,
2 and 3 are partial cross-sectional views showing the operating state, respectively. 1: Cylinder tube, 2: Piston, 3: Piston rod,
5, 10: Fitting part, 20: Movable ring, 21: Center hole, 23: Drawing hole, 25: Permanent magnet, 30: Screw rod
Claims (1)
ピストンまたはピストンロツドに固設した嵌入部と気密
に嵌合する中心孔を形成するとともに偏心位置に一面か
ら他面へ貫通する小径の絞り孔を形成してなる可動リン
グを気密かつ摺動自由に嵌装し、前記シリンダチユーブ
の外面に、前記可動リングとの間に磁気吸引力を生ずる
磁気吸引部材を移動調節可能に取り付け、かつ、前記シ
リンダチユーブの端部に被着したポート付きのカバーに
前記嵌入部が気密に嵌合する嵌合孔を前記ポートに連通
させて形成するとともに該カバーの内端面から前記ポー
トに連通する絞り付きのバイパス孔を形成したことを特
徴とする流体圧シリンダ。1. A cylinder tube made of a non-magnetic material,
A movable ring, which has a central hole that airtightly fits with a fitting portion fixed to the piston or piston rod and a small-diameter throttle hole that penetrates from one surface to the other surface at an eccentric position, is airtightly and freely slidable. Mounted on the outer surface of the cylinder tube so as to be movable and adjustable between the movable ring and the movable ring, and a cover with a port attached to the end of the cylinder tube. A fluid pressure cylinder characterized in that a fitting hole in which the fitting portion is fitted in an airtight manner is formed to communicate with the port, and a bypass hole with a throttle is formed to communicate from the inner end surface of the cover to the port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62136372A JPH06100208B2 (en) | 1987-05-29 | 1987-05-29 | Fluid pressure cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62136372A JPH06100208B2 (en) | 1987-05-29 | 1987-05-29 | Fluid pressure cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63297804A JPS63297804A (en) | 1988-12-05 |
| JPH06100208B2 true JPH06100208B2 (en) | 1994-12-12 |
Family
ID=15173622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62136372A Expired - Lifetime JPH06100208B2 (en) | 1987-05-29 | 1987-05-29 | Fluid pressure cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06100208B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3597630B2 (en) * | 1995-08-29 | 2004-12-08 | ヤマハ発動機株式会社 | Surface mounting machine |
| DE10305954B3 (en) * | 2003-02-12 | 2004-07-01 | Rexroth Mecman Gmbh | End of stroke damping system for pneumatic cylinder uses coil springs on either side of piston, together with permanent magnets passing near electromagnets fastened to outside of cylinder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4813692U (en) * | 1971-07-03 | 1973-02-15 | ||
| JPS51110191U (en) * | 1975-03-05 | 1976-09-06 | ||
| JPS5745442U (en) * | 1980-08-29 | 1982-03-12 |
-
1987
- 1987-05-29 JP JP62136372A patent/JPH06100208B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63297804A (en) | 1988-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4747577A (en) | Gate valve with magnetic closure for use with vacuum equipment | |
| US3779401A (en) | Pneumatic device for moving articles | |
| US4241644A (en) | Pneumatic actuator | |
| CA2551987A1 (en) | Pneumatically actuated valve | |
| JPH06100208B2 (en) | Fluid pressure cylinder | |
| GB2067717A (en) | Flow control valves | |
| CN210770418U (en) | Two-position three-way electromagnetic directional valve | |
| JPH0146277B2 (en) | ||
| JP2514499Y2 (en) | Rotless dress cylinder | |
| JPH0545903Y2 (en) | ||
| JP2004011855A (en) | Cylinder with speed control mechanism | |
| JPH0828510A (en) | Lock mechanism | |
| JPS6246057Y2 (en) | ||
| JPH084761B2 (en) | Magnetic cylinder and iron removing machine | |
| JPH0415305A (en) | Piston cylinder device | |
| JPS5817930Y2 (en) | pneumatic cylinder | |
| JPH0298233U (en) | ||
| JPH0433451Y2 (en) | ||
| JPS6045981U (en) | solenoid valve | |
| RU1774075C (en) | Pneumatic positioner | |
| SU433557A1 (en) | PNEUMATIC DEVICE TO CHANGE THE COMPRESSIVE GAS SUPPLY INTO THE PISTON CAVITY OF THE HIGH-VOLTAGE SWITCH | |
| JPS63118480U (en) | ||
| SU580442A1 (en) | Pneumatic position sensor | |
| JP2518184Y2 (en) | Valve body opening / closing device | |
| SU1691636A1 (en) | Device for simulating magnetic-powder seal operation |