JPH0599202A - Air cylinder - Google Patents

Air cylinder

Info

Publication number
JPH0599202A
JPH0599202A JP26006991A JP26006991A JPH0599202A JP H0599202 A JPH0599202 A JP H0599202A JP 26006991 A JP26006991 A JP 26006991A JP 26006991 A JP26006991 A JP 26006991A JP H0599202 A JPH0599202 A JP H0599202A
Authority
JP
Japan
Prior art keywords
cylinder
compressed air
piston
vacuum
air
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.)
Pending
Application number
JP26006991A
Other languages
Japanese (ja)
Inventor
Junichiro Yoshie
潤一郎 吉江
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP26006991A priority Critical patent/JPH0599202A/en
Publication of JPH0599202A publication Critical patent/JPH0599202A/en
Pending legal-status Critical Current

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  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE:To manufacture a small air cylinder by disposing a piston connected to a working rod within a cylinder having one air inlet hole at one end thereof and passing alternately compressed air and vacuum through the air inlet hole to reciprocate the piston. CONSTITUTION:A piston 8 is pushed by letting compressed air flow in from an inlet hole 10. Then, the piston 8 is returned to its original position by producing negative pressure in a tube 7 due to vacuum suction from the inlet hole 10. The piston 8 and a connecting rod 9 thus make reciprocating motion. The rod 9 is D cut to discharge the remaining air within the cylinder tube 7 and nullify the vacuum pressure to have communication to the atmosphere. The smooth reciprocating motion is thus attained. Then, as illustrated in the figure, by connecting the air cylinder to a vacuum source V and a compressed air source A through a two-way three-port type magnet valve 12 for vacuum and a magnet valve 13 for compressed air, the working vacuum can be obtained from energy consisting only of compressed air.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はエアシリンダの構造とそ
の作動方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cylinder structure and its operating method.

【0002】[0002]

【従来の技術】各産業分野に使用されているエアシリン
ダの構造は大別すると図1に示す単動型と図2に示す複
動型と呼ばれるものが基本的構造として広く波及されて
いる。いずれも圧縮空気以後圧空を用い単動型にあって
は通常圧空流入孔の反対側にピストンを介して戻しバネ
と呼ばれるものをシリンダに内在させており更に前記バ
ネ側のシリンダ端部には大気導通用の小さな孔が設けら
れている。その作動は前記流入孔より圧空をシリンダ内
に入れることによりピストン及び戻しバネを押す、この
時戻しバネ側のシリンダ内にある空気は圧縮され反発力
となるため、前記導通孔より大気に放出することにより
ピストンは移動することが出来る。複動にあっては圧空
を遮断し流入孔より残留圧空を放出するとともに、戻し
バネによって原点に復帰するがこの時戻しバネ側は負圧
が発生するため導通孔より大気つまり1気圧をシリンダ
内に導きスムーズなピストン動作を得るのである。複動
型にあってはシリンダ両端部にある圧空流入孔により交
互に圧空を入れピストンを往復させるので戻しバネは通
常用いない。シリンダには単動型で説明した大気導通孔
は設けなく圧空流入孔を併用している。いずれにせよこ
の往復運動により種々の機構を動作させるものである。
2. Description of the Related Art The structure of an air cylinder used in each industrial field is roughly classified into a single-acting type shown in FIG. 1 and a double-acting type shown in FIG. In both cases, after the compressed air, compressed air is used, and in the single-acting type, a so-called return spring is usually provided in the cylinder on the opposite side of the compressed air inflow hole through the piston. There is a small hole for conduction. The operation pushes the piston and the return spring by putting compressed air into the cylinder through the inflow hole. At this time, the air in the cylinder on the return spring side is compressed and becomes a repulsive force, and is released to the atmosphere through the through hole. This allows the piston to move. In double action, the compressed air is blocked and residual compressed air is released from the inflow hole, and the return spring returns to the origin. At this time, however, a negative pressure is generated on the return spring side, so the atmosphere, that is, 1 atmospheric pressure is introduced from the through hole into the cylinder. This leads to smooth piston movement. In the double-acting type, the return spring is not normally used because the compressed air is alternately introduced through the compressed air inflow holes at both ends of the cylinder to reciprocate the piston. The cylinder is not provided with the atmosphere communicating hole described for the single-acting type, but is also used with the compressed air inflow hole. In any case, this reciprocating motion operates various mechanisms.

【0003】[0003]

【発明が解決しようとする課題】しかしながら最近の世
に出回る種々の電気製品をはじめとする商品は小型指向
あるいは同等形状であれば複雑機構化へと進みいやが上
にもこれらの製造工程等に使用されるエアシリンダにも
大きな影響を及ぼしてきている。即ちエアシリンダをさ
らに小型化する要求が強いのである。単動型にあって
は、戻しバネがシリンダに内在されるため小型化と云え
ども限界があり複動型についても圧空流入孔を2個設け
なくてはならずこれまた小型化への妨げとなっていると
いう問題点を有する。
However, the products such as various electric products in the recent world have a small structure or have the same shape, and the mechanism is complicated. It also has a great influence on air cylinders. That is, there is a strong demand for further miniaturization of the air cylinder. In the single-acting type, the return spring is built in the cylinder, so there is a limit to downsizing, and even in the double-acting type, two compressed air inflow holes must be provided, which also hinders downsizing. It has become a problem.

【0004】[0004]

【課題を解決するための手段】本発明はかかるエアーシ
リンダ小型化への課題を解決すべくなされたもので、シ
リンダ内に於て圧空と真空を1個の空気導通孔を用いて
流動させることによりピストンの往復運動を得るもので
戻しバネと圧空流入孔を1つ排除することにより小型の
エアシリンダを実現させるものである。
SUMMARY OF THE INVENTION The present invention has been made to solve the problem of miniaturization of such an air cylinder. In the cylinder, compressed air and vacuum are made to flow using one air communicating hole. Thus, the reciprocating motion of the piston is obtained, and by removing one return spring and one compressed air inflow hole, a small air cylinder is realized.

【0005】[0005]

【実施例】以下、本発明を図示する実施例により具体的
に説明する。
EXAMPLES The present invention will be described in detail below with reference to illustrated examples.

【0006】図1は前項発明が解決しようとする課題の
中で述べた従来の一般的な単動型シリンダで、シリンダ
チューブ1内にピストン2と直結したロッド3と戻しバ
ネ4を介在した圧空導通孔5より圧空を流入しピストン
を押す。シリンダ内の残留空気は大気導通孔6より放出
される。図2は同じく複動型の従来構造を示し2個の導
入孔1a及び1bから交互に圧空を流入し、ピストンロ
ッドを複動させると共に大気導通孔を併用している。図
1及び図2のことから単動型では戻しバネと大気導通
孔、複動型ではもう一つの圧空導入孔が必要不可欠の機
構であることが解る。そもそも前記不可欠の要素がシリ
ンダの小型化を妨げていることにちがいない。しかるに
この要素を排除することによりさらなる小型エアシリン
ダを実現させたものが図3の構造を持った本発明のシリ
ンダであり該シリンダチューブ7内に、該ピストン8及
びロッド9を介在させ導入孔10を設けてある。即ち戻
しバネを用いず導入孔が一つであることが本発明の特徴
となっている。その動作は導入孔10より圧空を流入さ
せピストンを押し、複については該導入孔から真空によ
ってシリンダチューブ内に負圧を発生させピストンを原
点位置に吸い戻す。さらにシリンダチューブ内の残留空
気放出と負圧発生を解消する方法として6aの如くロッ
ドをDカットすることにより大気導通条件を満たしスム
ーズなピストンロッドの往復運動を得るものである。さ
て、シリンダを動作させる媒体として、圧縮空気が用い
られることは周知の事実であり説明を持たない。本発明
に於いては真空を用いるためその源を容易に得ることが
重要である。例えば工場に於いて、真空源を発生する装
置が既設配管されている場合はそのままホース連結によ
って条件を満たすことが出来る。しかし、新設とする場
合大きな費用を見込むことになり、発明の意図を充分に
発揮することはできない。そこで一般的に工場の大小に
かかわらずエアシリンダを使用する場合では、当然圧空
源を基本エネルギーとしているため圧縮空気を発生させ
る装置、即ちコンプレッサーが設置され配管が施されて
いるのが通常である。つまり、圧縮空気エネルギーは広
い範囲で得ることが可能である。
FIG. 1 shows a conventional general single-acting type cylinder described in the problems to be solved by the invention of the preceding paragraph, which is a compressed air in which a rod 3 directly connected to a piston 2 and a return spring 4 are provided in a cylinder tube 1. Compressed air flows in through the through hole 5 and pushes the piston. The residual air in the cylinder is discharged from the atmosphere communicating hole 6. FIG. 2 also shows a double-acting type conventional structure in which compressed air is alternately introduced from two introduction holes 1a and 1b to double-act the piston rod and also to use an atmosphere communicating hole. From FIG. 1 and FIG. 2, it can be seen that the return spring and the atmosphere communicating hole are the essential mechanism in the single-acting type, and the other compressed air introducing hole is the essential mechanism in the double-acting type. In the first place, the indispensable element must prevent the miniaturization of the cylinder. However, it is the cylinder of the present invention having the structure of FIG. 3 that realizes a further small air cylinder by eliminating this element, and the piston 8 and the rod 9 are interposed in the cylinder tube 7, and the introduction hole 10 is provided. Is provided. That is, it is a feature of the present invention that there is one introduction hole without using a return spring. In the operation, compressed air is introduced from the introduction hole 10 to push the piston, and in the case of multiple, negative pressure is generated in the cylinder tube by vacuum from the introduction hole to suck the piston back to the original position. Further, as a method for eliminating the residual air release in the cylinder tube and the generation of negative pressure, the rod is D-cut as shown in 6a to satisfy the atmosphere conduction condition and obtain a smooth reciprocating motion of the piston rod. Now, it is a well-known fact that compressed air is used as a medium for operating the cylinder, and no explanation is given. Since a vacuum is used in the present invention, it is important to easily obtain its source. For example, in a factory, if a device for generating a vacuum source is already installed, the condition can be satisfied by connecting the hose as it is. However, when the new installation is made, a large cost is expected, and the intention of the invention cannot be fully exerted. Therefore, in general, when an air cylinder is used regardless of the size of the factory, it is natural that a compressed air source is used as the basic energy, so that a device for generating compressed air, that is, a compressor is installed and piping is provided. .. That is, compressed air energy can be obtained in a wide range.

【0007】本発明のもう一つの特徴はこの圧空のみの
エネルギーから図4の真空発生機器を用いて動作用真空
11を得ていることである。この部材は安価で最近広く
販売され入手も容易である。次に図5に当該シリンダを
動作させる配管方法を説明する。2ウェイ−3ポート型
電磁バルブ12と13を12のアウタポート14をシリ
ンダの導入孔と連結させる。次に、インポート15を真
空源と継ぎエキゾーストポート16を電磁バルブ13の
アウタポート17と結びインポート19を圧空源と連結
させる。この配管方法はピストン動作時シリンダチュー
ブ内の残留空気を大気に放出する条件をクリアする方法
として重要である。続いて電磁バルブ動作の説明をする
と、非通電時にインポートが閉じエキゾーストポートが
開の状態つまりノルマリークローズ型の電磁バルブを使
用した場合、例えば図5の如く前記電磁バルブ12をO
Nし電磁バルブ13をOFFの状態では真空源Vと継る
のでピストンは導通孔側に引き寄せられている。次に、
電磁バルブ12をOFFすると同時に電磁バルブ13を
ONすれば電磁バルブ12はエキゾーストポートとアウ
ターポートが継った状態となり電磁バルブ13はアウタ
ーポート17が開きエキゾーストポート18が閉じる。
圧空Aはインポート19からアウタポート17を通り電
磁バルブ12のエキゾーストポート16からアウタポー
ト14を経由しシリンダ導通孔に流入しピストンを押す
のである。この動作を繰り返すことにより圧空と真空に
よるピストンロッドの往復運動を実現することが出来る
のである。
Another feature of the present invention is that the operating vacuum 11 is obtained from the energy of the compressed air only by using the vacuum generating device of FIG. This member is inexpensive, widely sold recently, and easily available. Next, a piping method for operating the cylinder will be described with reference to FIG. The two-way, three-port type electromagnetic valves 12 and 13 connect the twelve outer ports 14 to the introduction holes of the cylinder. Next, the import 15 is connected to the vacuum source, the exhaust port 16 is connected to the outer port 17 of the electromagnetic valve 13, and the import 19 is connected to the compressed air source. This piping method is important as a method for clearing the condition of releasing the residual air in the cylinder tube to the atmosphere during piston operation. Next, the operation of the electromagnetic valve will be explained. When the import is closed and the exhaust port is opened when the power is not supplied, that is, when a normally closed type electromagnetic valve is used, the electromagnetic valve 12 is turned on as shown in FIG.
When the solenoid valve 13 is turned off, the piston is pulled toward the side of the through hole because it connects to the vacuum source V. next,
If the electromagnetic valve 12 is turned off and the electromagnetic valve 13 is turned on at the same time, the electromagnetic valve 12 is in a state in which the exhaust port and the outer port are connected, and the electromagnetic valve 13 opens the outer port 17 and closes the exhaust port 18.
The compressed air A flows from the import 19 through the outer port 17 and the exhaust port 16 of the electromagnetic valve 12 through the outer port 14 into the cylinder communication hole to push the piston. By repeating this operation, reciprocating motion of the piston rod by compressed air and vacuum can be realized.

【0008】[0008]

【発明の効果】以上実施例の説明の如く該シリンダの動
作源に真空と圧縮空気を用いることにより小型化へのあ
い路となっていた戻しバネの排除と圧空導入孔を削減す
るとともに従来型シリンダの製造工程に於ても部材節減
と加工費減少に大きく貢献でき、さらにエアシリンダの
使用範囲を広めるものである。
As described above with reference to the embodiments, the use of vacuum and compressed air as the operation source of the cylinder eliminates the return spring and the compressed air introduction hole, which have been a roadway for downsizing, and reduces the pressure of the conventional type. In the manufacturing process of the cylinder, it can greatly contribute to the reduction of members and the processing cost, and further widen the range of use of the air cylinder.

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

【図1】従来の単動型エアシリンダの構造図。FIG. 1 is a structural diagram of a conventional single-acting air cylinder.

【図2】従来の複動型エアシリンダの構造図。FIG. 2 is a structural diagram of a conventional double-acting air cylinder.

【図3】本発明の実施例を示したエアシリンダの構造
図。
FIG. 3 is a structural diagram of an air cylinder showing an embodiment of the present invention.

【図4】市販真空発生器の一例図。FIG. 4 is an example diagram of a commercial vacuum generator.

【図5】真空切替と圧空切替の配管動作図。FIG. 5 is a piping operation diagram for vacuum switching and compressed air switching.

【符号の説明】[Explanation of symbols]

1 シリンダチューブ 1a 圧空流入孔 1b 圧空流入孔 2 ピストン 3 ロッド 4 戻しバネ 5 圧空流入孔 6 大気導通孔 6a ロッドDカット部 7 シリンダチューブ 8 ピストン 9 ロッド 10 導入孔 11 真空発生器の真空ポート 12 真空用電磁バルブ 13 圧空用電磁バルブ 14 アウタポート 15 インポート 16 エキゾーストポート 17 アウタポート 18 エキゾーストポート 19 インポート 1 Cylinder tube 1a Compressed air inflow hole 1b Compressed air inflow hole 2 Piston 3 Rod 4 Return spring 5 Compressed air inflow hole 6 Atmosphere communicating hole 6a Rod D cut part 7 Cylinder tube 8 Piston 9 Rod 10 Introducing hole 11 Vacuum generator vacuum port 12 Vacuum Solenoid valve 13 Pneumatic solenoid valve 14 Outer port 15 Import 16 Exhaust port 17 Outer port 18 Exhaust port 19 Import

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】端部に1個の空気導通孔を持つシリンダと
その内部に作動ロッドに直結したピストンを前記シリン
ダの空気導通孔に圧縮空気と真空を切り換え通過させる
ことにより前記ピストンを複動させることを特徴とする
エアシリンダ。
Claim: What is claimed is: 1. A cylinder having a single air-conducting hole at its end and a piston directly connected to an operating rod in the cylinder. The compressed air and the vacuum are selectively passed through the air-conducting hole of the cylinder to double-act the piston. An air cylinder that is characterized by:
JP26006991A 1991-10-08 1991-10-08 Air cylinder Pending JPH0599202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26006991A JPH0599202A (en) 1991-10-08 1991-10-08 Air cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26006991A JPH0599202A (en) 1991-10-08 1991-10-08 Air cylinder

Publications (1)

Publication Number Publication Date
JPH0599202A true JPH0599202A (en) 1993-04-20

Family

ID=17342879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26006991A Pending JPH0599202A (en) 1991-10-08 1991-10-08 Air cylinder

Country Status (1)

Country Link
JP (1) JPH0599202A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007276788A (en) * 2006-04-03 2007-10-25 Tosei Denki Kk Vacuum packaging device
JP2014524000A (en) * 2011-06-23 2014-09-18 ジェネラル イクイップメント アンド マニュファクチャリング カンパニー, インコーポレイテッド, ディー/ビー/エー トップワークス, インコーポレイテッド Automatic speed detection device and method for partial stroke test of control valve
JP2014214807A (en) * 2013-04-25 2014-11-17 Ckd株式会社 Fluid pressure cylinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007276788A (en) * 2006-04-03 2007-10-25 Tosei Denki Kk Vacuum packaging device
JP2014524000A (en) * 2011-06-23 2014-09-18 ジェネラル イクイップメント アンド マニュファクチャリング カンパニー, インコーポレイテッド, ディー/ビー/エー トップワークス, インコーポレイテッド Automatic speed detection device and method for partial stroke test of control valve
JP2014214807A (en) * 2013-04-25 2014-11-17 Ckd株式会社 Fluid pressure cylinder

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