JPH01150003A - Low/high pressure liquid supply mechanism by cylinder - Google Patents

Abstract

PURPOSE:To simplify a boosting mechanism by housing valve bodies to be switched by means of pressure in the end part of the ram of a booster piston. CONSTITUTION:A booster piston 8 is fitted in a second cylinder 2, while valve bodies 11, 15, 17 are housed in the end part of the ram 9 of the booster piston 8. A boosting mechanism can be simplified accordingly, since it is not necessary to provide the valve bodies 11, 15, 17 separately.

Description

【発明の詳細な説明】 本発明の機構は他の装置の機器の一部として組込んで低
圧力及び高圧力の液を供給するのが一般である。第６図
及び第７，８図はその例を示したものである。先に第６
図について説明する。一般に供給液体はエヤー、供給液
体はオイルが使用されるので、以下の説明では供給流体
はエヤー、液はオイルとする。本発明の機構を、シリン
ダー２８、カバーブロック２９、ピストン２６、ロッド
２７に組込みをしてＪ液室にオイルを満す。この装置は
空油圧シリンダーである。液出入口５′よりＣ′液室内
のオイルをＪ液室に供給する。ピストン２６とロッド２
７は図上左方に移動する。このときロッド２７に負荷（
荷重）が無ければ低圧力のオイルが早い速度で供給され
、ロッド２７は移動する。DETAILED DESCRIPTION OF THE INVENTION The mechanism of the present invention will generally be incorporated as part of the equipment of other devices to supply low pressure and high pressure fluids. FIG. 6 and FIGS. 7 and 8 show examples thereof. 6th first
The diagram will be explained. Generally, air is used as the supply liquid and oil is used as the supply liquid, so in the following description, the supply fluid is assumed to be air and the liquid is oil. The mechanism of the present invention is assembled into the cylinder 28, cover block 29, piston 26, and rod 27, and the J liquid chamber is filled with oil. This device is an air-hydraulic cylinder. The oil in the C' liquid chamber is supplied to the J liquid chamber from the liquid inlet/outlet 5'. Piston 26 and rod 2
7 moves to the left in the figure. At this time, the rod 27 is loaded (
If there is no load), low pressure oil is supplied at a high speed and the rod 27 moves.

次にロッド２７に負荷がかかったものとする。負荷抵抗
のためＪ液室のオイル圧は上昇する。このとき本発明の
機構は、このオイル圧の上昇を感知して自動的に高圧力
のオイルを供給し、ピストン２６とロッド２７を加圧し
て、ロッド２７に大きな力を与へるものである。作業が
完了すれば、Ｋ室にエヤーを供給する。ピストン２６は
加圧されるので回上右方に移動し、Ｊ液室のオイルはＣ
′液室に供給され第６図の如くに復帰する。これまでの
空油圧シリンダーでは、作業工程の途中に於いて被加工
物の位置の調整、リミットスイッチ等のセンサーに依り
、被加工物の位置を感知し弁の切替へを行い、低圧力か
ら高圧力にする等の工程を必要とする。本発明の機構を
用いた空油圧シリンダーでは低圧力から高圧力の切替へ
が自動的に行はれるので、上記の工程が省略できるので
、不便、非能率、センサー取付に伴う不経済を解消する
ことができる。次に第７図は、他装置の液室３１に本発
明の機構を組込んだもので、Ｌ液室にオイルを満し、液
出入口５″よりオイルを供給する。第８図に其の使用例
を示す。尚、第６図に依る例では、液出入口５′，５″
からのオイルの供給に本発明の機構の作動用のエヤーを 用いることにしてあるが、実際の使用では其の装置独自
の方法でオイルを供給すればよい。Next, assume that a load is applied to the rod 27. The oil pressure in the J liquid chamber increases due to the load resistance. At this time, the mechanism of the present invention senses this increase in oil pressure and automatically supplies high-pressure oil to pressurize the piston 26 and rod 27, thereby applying a large force to the rod 27. . When the work is completed, air will be supplied to the K room. Since the piston 26 is pressurized, it rotates and moves to the right, and the oil in the J liquid chamber becomes C.
'The liquid is supplied to the liquid chamber and returned as shown in FIG. With conventional air-hydraulic cylinders, the position of the workpiece is adjusted during the work process, and sensors such as limit switches are used to sense the position of the workpiece and switch the valve, from low pressure to high pressure. Requires processes such as applying pressure. Since the air-hydraulic cylinder using the mechanism of the present invention automatically switches from low pressure to high pressure, the above steps can be omitted, eliminating inconvenience, inefficiency, and waste associated with sensor installation. be able to. Next, Fig. 7 shows a system in which the mechanism of the present invention is incorporated into the liquid chamber 31 of another device, and the L liquid chamber is filled with oil, and oil is supplied from the liquid inlet/outlet 5''. An example of use is shown below. In the example shown in FIG.
It is assumed that the air for operating the mechanism of the present invention is used to supply oil from the apparatus, but in actual use, oil may be supplied using a method unique to the apparatus.

第１〜５図に依り説明する。１，２は第１，２シリンダ
ー。３は液室で隔壁ブロック４と一体化し、ピストンの
嵌装部２５を有し、嵌装部よりＨ側をＣ液室Ｇ側をＤ液
室とする、そしてＣ液室に液出入口５を設ける。６はカ
バーブロック。７は遊動ピストンで第１，２シリンダー
１，２に嵌装し、Ｅ供給流体室（以下Ｅ室と云う）とＡ
液室を形成する。This will be explained with reference to FIGS. 1 to 5. 1 and 2 are the first and second cylinders. 3 is a liquid chamber which is integrated with the bulkhead block 4 and has a piston fitting part 25, the H side from the fitting part is a C liquid chamber, and the G side is a D liquid chamber, and a liquid inlet/outlet 5 is provided in the C liquid chamber. establish. 6 is a cover block. 7 is a floating piston fitted into the first and second cylinders 1 and 2, and is connected to the E supply fluid chamber (hereinafter referred to as E chamber) and the A
Forms a liquid chamber.

８は増圧ピストンで第２シリンダーに嵌装し、Ｆ供給流
体室（以下Ｆ室と云う）とＢ液室を形成する。９はラム
で増圧ピストン８と一体化し隔壁ブロック４を嵌装貫通
してＣ，Ｄ液室に突出する、そして内部は中空となりＢ
液室とＣ液室を連通する液通路１０を形成して、弁体１
１を持つ、更に増圧ピストン８より小径で液室３の嵌装
部２５に嵌装するピストン１３を持つ。又弁体１１はＤ
液室とＢ液室の差圧に依り、ばね１６の力に抗して液通
路１０を閉とする、このとき適当に定めた差圧Ｐ１以上
にならなければ閉とならないように、ばね１６の力を設
定する、そして差圧小となればばね１６に依り戻り作動
するように構成する。次に弁体１１はＤ液室とＢ，Ｃ液
室を連通する液通路１４を有し、Ｄ液室とＣ液室の差圧
に依り液通路１４を閉とし、差圧が無くなれば開となる
弁体１５を持つ。１２は通路で、ピストン１３が嵌装部
２５に嵌装した状態で、Ｄ液室とＣ液室を連通させるこ
とを目的とする。１７は弁体でＤ液室とＣ液室の差圧に
依り、ばね１８の方に抗して通路１２を開とし、そして
差圧が無くなれば、ばね１８に依り戻り作動する、この
際適当に定めた差圧Ｐ２以上にならなければ開とならな いようにばね１８の力を設定する、そして、Ｐ２はＰ１
より大とする。１９は液通路で、ＡとＢ液室を連通する
。２０，２１は通路でＥとＦ室に連通する。２２，２３
は管路で切替弁２４と通路２０，２１を連通する。Ａ，
Ｂ，Ｃ，Ｄ液室とそれ等を連通する通路にオイルを満す
。次に作動について説明する。Ｃ，Ｄ液室に負荷が無い
ものとする。8 is a pressure increasing piston fitted into the second cylinder to form an F supply fluid chamber (hereinafter referred to as F chamber) and a B liquid chamber. 9 is a ram that is integrated with the pressure booster piston 8, fits through the bulkhead block 4, projects into the liquid chambers C and D, and is hollow inside.
A liquid passage 10 communicating between the liquid chamber and the C liquid chamber is formed, and the valve body 1
1, and further has a piston 13 having a smaller diameter than the pressure boosting piston 8 and fitting into the fitting part 25 of the liquid chamber 3. Also, the valve body 11 is D
Depending on the pressure difference between the liquid chamber and the B liquid chamber, the liquid passage 10 is closed against the force of the spring 16. At this time, the spring 16 The force is set, and when the differential pressure becomes small, the spring 16 is configured to return to operation. Next, the valve body 11 has a liquid passage 14 that communicates the D liquid chamber with the B and C liquid chambers, and closes the liquid passage 14 depending on the pressure difference between the D liquid chamber and the C liquid chamber, and opens it when the pressure difference disappears. It has a valve body 15 which is as follows. Reference numeral 12 denotes a passage whose purpose is to communicate the D liquid chamber and the C liquid chamber when the piston 13 is fitted into the fitting part 25. Reference numeral 17 denotes a valve element which opens the passage 12 against the spring 18 depending on the differential pressure between the D and C liquid chambers, and when the differential pressure disappears, the spring 18 returns to operation. The force of the spring 18 is set so that the spring 18 will not open unless the differential pressure P2 is greater than the pressure difference P2 defined in P1.
Make it bigger. A liquid passage 19 communicates the A and B liquid chambers. 20 and 21 communicate with chambers E and F through passages. 22, 23
communicates the switching valve 24 with the passages 20 and 21 through a conduit. A,
Fill the B, C, and D liquid chambers and the passages that communicate them with oil. Next, the operation will be explained. Assume that there is no load on liquid chambers C and D.

管路２２よりエヤーを供給する。切替弁２４に依り管路
２３は大気開放となる。Ｅ室は加圧され、遊動ピストン
７はＨ方向に移動し、Ａ液室のオイルはＢ液室に移り、
増圧ピストン８は加圧されＧ方向に移動して、ピストン
１３は嵌装部２５に嵌装して通過しようとする。Ｄ液室
のオイルは液通路１４を通りＢとＣ液室に移動する。こ
のとき嵌装部２５の断面積は、液通路１４の断面積より
はるかに大きいので、オイルが液通路１４を早い速度で
通過するとき、流体抵抗に依る差圧がＤ液室とＢ，Ｃ液
室との間に発生する。弁体１５はオイルの流れと差圧に
依り移動し最後には差圧に依り液通路１４を閉とする。Air is supplied from the conduit 22. The switching valve 24 opens the pipe line 23 to the atmosphere. The E chamber is pressurized, the floating piston 7 moves in the H direction, and the oil in the A liquid chamber moves to the B liquid chamber.
The pressure increasing piston 8 is pressurized and moves in the G direction, and the piston 13 attempts to fit into the fitting portion 25 and pass through. The oil in the D liquid chamber passes through the liquid passage 14 and moves to the B and C liquid chambers. At this time, the cross-sectional area of the fitting part 25 is much larger than the cross-sectional area of the liquid passage 14, so when the oil passes through the liquid passage 14 at a high speed, a pressure difference due to fluid resistance is created between the liquid chambers D and B, C. Occurs between the liquid chamber and the liquid chamber. The valve body 15 moves depending on the flow of oil and the differential pressure, and finally closes the liquid passage 14 due to the differential pressure.

即ち、ピストン１３が嵌装部２５を通過する途中に於い
て液通路１４が閉となる。Ｄ液室は密封され、増圧ピス
トン８の移動は停止する。Ａ液室のオイルはＢ液室を通
ってＣ液室に流入し、液出入口５より他の装置の液室に
流入し加圧する。（第６図に於いてはＪ液室に流入して
ピストン２６とロッド２７を加圧する）。この状態での
オイル圧は、負荷が無いので低圧である。Ｅ室のエヤー
はオイルの送出しに使はれるので上昇しない。（約１ｋ
ｇ／ｃｍ２〜２．５ｋｇ／ｃｍ２）次に負荷が生じたも のとする。（第６図ではロッド２７に荷重がかかった状
態）上記の低圧でのオイルの送出しは停止し、Ｃ，Ｂ，
Ａ液室のオイル圧は上昇する。同時にＤ液室のオイル圧
も上昇する。That is, the liquid passage 14 is closed while the piston 13 is passing through the fitting part 25. The D liquid chamber is sealed and the movement of the pressure boosting piston 8 is stopped. The oil in the A liquid chamber flows into the C liquid chamber through the B liquid chamber, and then flows into the liquid chambers of other devices through the liquid inlet/outlet 5 and is pressurized. (In FIG. 6, it flows into the J liquid chamber and pressurizes the piston 26 and rod 27). The oil pressure in this state is low because there is no load. The air in chamber E is used to send oil, so it does not rise. (about 1k
g/cm2 to 2.5 kg/cm2) Next, assume that a load occurs. (In Figure 6, a load is applied to the rod 27.) The above-mentioned low-pressure oil delivery is stopped, and C, B,
The oil pressure in the A liquid chamber increases. At the same time, the oil pressure in the D liquid chamber also increases.

このときの圧力は、ピストン１３の断面積が、増圧ピス
トン８の断面積より小であり、且Ｄ液室は密封されてい
るので、パスカルの原理に依りＢ，Ｃ液室より高い圧力
が発生する。そして差圧がＰ１以上になれば、弁体１１
はＨ方向に移動して液通路１０を閉とし、第２図の如く
なる。そしてＡ，Ｂ液室のオイルのＣ液室への流入は停
止するので、Ｂ流室のオイル圧は更に上昇する、そして
Ｄ液室とＣ液室の差圧がＰ２になれば、弁体１７はＨ方
向に移動して、第３図の如くなり、通路１２は開となり
Ｄ液室のオイルは通路１２を通りＣ液室に流入して、ピ
ストン１３は嵌装部２５を通過する。そして第４図の如
くなり、ラム９のＧ方向への移動に依り、Ｃ，Ｄ液室の
オイルは液出入口５を通り他の装置の液室に流入して加
圧する。このときＣ，Ｄ液室と他の装置の液室を含め密
封されているので、パスカルの原理に依り、隔壁ブロッ
ク４に嵌装するラム９の受圧断面積と増圧ピストン８の
断面積比に比例する高圧力が発生する。The pressure at this time is higher than the pressure in the B and C liquid chambers due to Pascal's principle because the cross-sectional area of the piston 13 is smaller than the cross-sectional area of the pressure booster piston 8 and the D liquid chamber is sealed. Occur. If the differential pressure becomes P1 or more, the valve body 11
moves in the H direction to close the liquid passage 10, as shown in FIG. Then, the oil in the A and B liquid chambers stops flowing into the C liquid chamber, so the oil pressure in the B flow chamber further increases.When the differential pressure between the D and C liquid chambers reaches P2, the valve body 17 moves in the H direction to become as shown in FIG. 3, the passage 12 is opened, the oil in the D liquid chamber flows into the C liquid chamber through the passage 12, and the piston 13 passes through the fitting part 25. As shown in FIG. 4, as the ram 9 moves in the G direction, the oil in the C and D liquid chambers flows into the liquid chambers of other devices through the liquid inlet/outlet 5 and is pressurized. At this time, since the C and D liquid chambers and the liquid chambers of other devices are sealed, the ratio of the pressure-receiving cross-sectional area of the ram 9 fitted into the partition block 4 to the cross-sectional area of the pressure booster piston 8 is calculated based on Pascal's principle. A high pressure proportional to is generated.

そして他装置の液室を加圧する。（第６図では）液室を
加圧しピストン２６とロッド２７に大きな力を与へる）
。次に復帰について説明する。液出入口５よりＣ液室へ
のオイルの供給 と、切替弁２４を切替へて管路２３よりエヤーを供給す
る、管路２２は大気開放となる。Ｆ室は加圧され、増圧
ピストン８はＨ方向に移動する、ラム９も移動しＤ液室
の圧力が低下する。そしてＤとＢ液室の差圧がＰ１以下
になれば、弁体１１はばね１６に依りＧ方向に移動し、
液通路１０は開となりＢ，Ｃ，Ｄ液室は連通する。供給
オイルはＣ，Ｂ液室を通りＡ液室に入る。Ｅ室は大気圧
になっているので、遊動ピストン７は加圧されＧ方向に
移動する。又増圧ピストン８は更にＨ方向に移動し、ピ
ストン１３が嵌装部２５に嵌装する。Then, the liquid chambers of other devices are pressurized. (In Fig. 6) Pressurizes the liquid chamber and applies a large force to the piston 26 and rod 27)
. Next, the return will be explained. Oil is supplied from the liquid inlet/outlet 5 to the C liquid chamber, and air is supplied from the conduit 23 by switching the switching valve 24, and the conduit 22 is opened to the atmosphere. The F chamber is pressurized, the pressure boosting piston 8 moves in the H direction, the ram 9 also moves, and the pressure in the D liquid chamber decreases. Then, when the differential pressure between the D and B liquid chambers becomes less than P1, the valve body 11 is moved in the G direction by the spring 16,
The liquid passage 10 is opened and the B, C, and D liquid chambers communicate with each other. The supplied oil passes through the C and B liquid chambers and enters the A liquid chamber. Since the E chamber is at atmospheric pressure, the floating piston 7 is pressurized and moves in the G direction. Further, the pressure increasing piston 8 moves further in the H direction, and the piston 13 is fitted into the fitting part 25.

このときＤ液室はマイナス圧となる。そして弁体１５は
開となり第５図の如くで、Ｃ液室のオイルは液通路１４
を通りＤ液室に流入し、ピストン１３は嵌装部２５を通
過し第１図の如く復帰する。At this time, the pressure in the D liquid chamber becomes negative. Then, the valve body 15 is opened, as shown in FIG.
The piston 13 passes through the fitting portion 25 and returns as shown in FIG. 1.

特許請求の範囲２項は、第１図に於いて弁体１５を無く
したものであり、作動については、ピストン１３が嵌装
部２５を通過するとき、液通路１４を通るオイルの流れ
抵抗に依り生じた差圧、Ｐ１とＰ２に依り弁体１１，１
７を作動させるものである。Claim 2 is a version in which the valve body 15 is removed from FIG. Due to the differential pressure generated, P1 and P2, the valve bodies 11 and 1
7.

オイルの流れ抵抗に依る差圧は、嵌装部２５の直径を４
０ｍｍ、液通路１４の直径を４ｍｍ、とすれば、面積比
は１００倍となり、容易に差圧を得ることが出来る。尚
低電圧力液送り出し中に、液通路１４に依り、Ｄ液室の
オイルがＣ液室に移り、ピストン１３は徐々にＧ方向に
移動するが、嵌装部２５の嵌装長さを長くすることに依
り、低圧力液の送出しの必要時間に合せることが出来る
。The differential pressure due to the oil flow resistance increases the diameter of the fitting part 25 by 4
If the diameter of the liquid passage 14 is 0 mm and the diameter of the liquid passage 14 is 4 mm, the area ratio will be 100 times, and a differential pressure can be easily obtained. During low-voltage liquid delivery, the oil in the D liquid chamber moves to the C liquid chamber through the liquid passage 14, and the piston 13 gradually moves in the G direction. By doing so, it is possible to match the required time for delivering low-pressure liquid.

次に、前記の説明では、ＳとＣ液室を連通する通路に液
通路１４としたが、例へばピストン１３と嵌装部２５が
嵌装した状態で、適当な隙間を設けＣとＤ液室を連通さ
せ、これを液通路１４に替る通路として用いることが出
来る。この発明の機構は、小型で、低圧力液の供給時間
が少く、高速で高圧力液の供給を必要とする装置に適す
る。Next, in the above explanation, the liquid passage 14 was used as the passage that communicates the S and C liquid chambers, but for example, when the piston 13 and the fitting part 25 are fitted, an appropriate gap is provided between the C and D liquid chambers. This can be used as a passage instead of the liquid passage 14. The mechanism of the present invention is small in size, takes little time to supply low-pressure liquid, and is suitable for devices that require high-pressure liquid to be supplied at high speed.

特許請求の範囲３項は、第１図の弁体１７及びばね１８
の無い場合であり、作動については、ピストン１３が嵌
装部２５を通過するとき、通路１２を通るオイルの流れ
抵抗に依り、差圧Ｐ１を作り弁体１１を作動させるもの
である。又前記で説明した様に、ピストン１３と嵌装部
２５の間に適当な隙間を設けることに依り、通路１２に
替る通路として用いることが出来る。又嵌装部２５の嵌
装長さを長くすることに依り、高圧力の液を除々に時間
をかけて供給することが出来る。この発明の機械は、低
圧力の液の供給時間が少く、低速で高圧力液の供給を必
要とする装置に適する。Claim 3 is directed to the valve body 17 and spring 18 in FIG.
In this case, when the piston 13 passes through the fitting part 25, the pressure difference P1 is created by the flow resistance of the oil passing through the passage 12, and the valve body 11 is operated. Further, as explained above, by providing an appropriate gap between the piston 13 and the fitting portion 25, it can be used as a passage instead of the passage 12. Furthermore, by increasing the fitting length of the fitting part 25, high-pressure liquid can be gradually supplied over time. The machine of the present invention takes only a short time to supply low-pressure liquid and is suitable for devices that require high-pressure liquid to be supplied at low speed.

特許請求の範囲４項は、第１図の弁体１５，１７とばね
１８の無い場合である。作動については、ピストン１３
が嵌装部２５を通過するとき、液通路１４を通るオイル
の流れ抵抗に依り、差圧Ｐ１を作り弁体１１を作動させ
るものである。又前記で説明したと同様に、ピストン１
３と嵌装部２５の間に適当な隙間を設けることに依り、
液通路１４に変る通路とすることが出来る。又嵌装部２
５の嵌装長さを長くすることに依り、高圧力の液を除々
に時間をかけて供給することが出来る。この発明の機構
は、小型で、低圧力液の供給時間が少く、低速で高圧力
液の供給を必要とする装置に適する。Claim 4 is a case where the valve bodies 15, 17 and the spring 18 shown in FIG. 1 are not provided. Regarding operation, piston 13
When the oil passes through the fitting part 25, a pressure difference P1 is created due to the flow resistance of the oil passing through the liquid passage 14, and the valve body 11 is actuated. Also, as explained above, the piston 1
By providing an appropriate gap between 3 and the fitting part 25,
It can be a passage that replaces the liquid passage 14. Also, fitting part 2
By increasing the fitting length of 5, high-pressure liquid can be gradually supplied over time. The mechanism of the present invention is small in size, takes a short time to supply low-pressure liquid, and is suitable for devices that require high-pressure liquid to be supplied at low speed.

特許請求の範囲５項は、第１図に於いて、液通路１４と
弁体１５が無い場合である。戻り作動のとき、ピストン
１３が嵌装部２５を通過するとき、ＤとＣ液室を連通す
る通路が無いので、Ｄ液室は一時眞空状態となる。しか
し眞空に依る圧力は最大１ｋｇ／ｃｍ２であり、作動用
のエヤー圧は、一般に１ｋｇ／ｃｍ２以上であり、増圧
ピストン８の断面積はピストン１３の断面積より大であ
るので、ピストン１３は嵌装部２５を通過する。小型で
、高速で、高圧力の液を必要とする装置に適する。Claim 5 corresponds to the case where the liquid passage 14 and the valve body 15 are not provided in FIG. 1. During the return operation, when the piston 13 passes through the fitting part 25, the D liquid chamber is temporarily in an empty state because there is no passage that communicates the D and C liquid chambers. However, the pressure due to the sky is 1 kg/cm2 at maximum, the air pressure for operation is generally 1 kg/cm2 or more, and the cross-sectional area of the pressure boosting piston 8 is larger than the cross-sectional area of the piston 13, so the piston 13 It passes through the fitting part 25. Suitable for devices that require small size, high speed, and high pressure liquids.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、実施例の縦断面図、第２，３，４，５図は第
１図の部分断面図、第６，７図は本発明の機構を組込ん
だ例を示した縦断面図、第８図は第７図の装置の使用例
を示す。 １，２…第１、２シリンダー，３…流室、４…隔壁ブロ
ック、５…流出入口、６，２９…カバーブロック、７…
遊動ピストン、８…増圧ピストン、９…ラム、１０，１
４，１９…液通路、１１，１５，１７…弁体、１２…通
路、１３…ピストン、１６，１８…ばね、２０，２１…
通路、２２，２３…管路、２４…切替弁、２５…嵌装部
、２６…ピストン、２７…ロッド、２８…シリンダー、
３０…通路、３１…他装置の液室。Fig. 1 is a longitudinal cross-sectional view of an embodiment, Figs. 2, 3, 4, and 5 are partial cross-sectional views of Fig. 1, and Fig. 6 and 7 are longitudinal cross-sections showing an example incorporating the mechanism of the present invention. 8 shows an example of the use of the device of FIG. 7. 1, 2...First and second cylinders, 3...Flow chamber, 4...Partition wall block, 5...Outlet/outlet, 6, 29...Cover block, 7...
Idle piston, 8... Pressure increase piston, 9... Ram, 10, 1
4,19...liquid passage, 11,15,17...valve body, 12...passage, 13...piston, 16,18...spring, 20,21...
Passage, 22, 23...Pipe line, 24...Switching valve, 25...Fitting part, 26...Piston, 27...Rod, 28...Cylinder,
30...Passway, 31...Liquid chamber of other device.

Claims (5)

【特許請求の範囲】[Claims] （１）第１，２シリンダーに嵌装し供給流体室及びＡ液
室を形成するそして供給流体に依り作動し供給液に依り
戻り作動する遊動ピストンと、第２シリンダーに嵌装し
供給流体室及びＢ液室を形成するそして下記の弁機構の
作動に依り作動し供給流体に依り戻り作動する増圧ピス
トンと、隔壁ブロックと一体化しＣ，Ｄ液室を持ちそし
て下記のラムのピストンの嵌装部を持った液室と、Ｃ液
室に設けられた液出入口と、増圧ピストンと一体化し隔
壁ブロックを嵌装貫通しＣ，Ｄ液室に突出するそして増
圧ピストンより小径で液室嵌装部に嵌装するピストンと
下記の弁機構を持ったラムと、Ａ，Ｂ，Ｃ，Ｄの各液室
とそれらを連通する液通路に満たされた液体と、上記ピ
ストンの嵌装部通過に伴うＤ液室とＢ，Ｃ液室の差圧と
、上記差圧のＰ＿１に依り液通路１０を閉としばねに依
り戻り作動するそして液通路１４と上記の差圧に依り液
通路１４を閉とする弁を持った弁体と、上記の差圧Ｐ＿
１より大きいＰ＿２に依り通路１２を開としばねに依り
戻り作動する弁体を持ったことを特徴とする、シリンダ
ーに依る低圧力及び高圧力液供給機構。(1) A floating piston that is fitted in the first and second cylinders to form a supply fluid chamber and a liquid chamber A, and that operates depending on the supply fluid and returns to operation depending on the supply fluid, and a floating piston that is fitted in the second cylinder and forms the supply fluid chamber and the A liquid chamber. and B, which form liquid chambers, and are operated by the operation of the valve mechanism described below, and return operated by the supplied fluid, and are integrated with the bulkhead block and have liquid chambers C and D, into which the piston of the ram described below is fitted. A liquid chamber with a mounting part, a liquid inlet/outlet provided in liquid chamber C, a liquid chamber that is integrated with the pressure booster piston, fits through the partition block and projects into liquid chambers C and D, and a liquid chamber with a smaller diameter than the pressure booster piston. A piston to be fitted into the fitting part, a ram having the following valve mechanism, liquid filled in each of the liquid chambers A, B, C, and D and a liquid passage connecting them, and the fitting part of the piston. Due to the differential pressure between the D liquid chamber and the B and C liquid chambers as they pass through, and the above differential pressure P_1, the liquid passage 10 is closed and returned to operation by the spring, and the liquid passage 14 is operated due to the above differential pressure. A valve body with a valve that closes and the above differential pressure P_
A cylinder-based low-pressure and high-pressure liquid supply mechanism, characterized in that it has a valve body that opens the passage 12 due to P_2, which is greater than 1, and is operated back by a spring. （２）第１，２シリンダーに嵌装し供給流体室及びＡ液
室を形成するそして供給流体に依り作動し供給液に依り
戻り作動する遊動ピストンと、第２シリンダーに嵌装し
供給流体室及びＢ液室を形成するそして下記の弁機構の
作動に依り作動し供給流体に依り戻り作動する増圧ピス
トンと、隔壁ブロックと一体化しＣ，Ｄ液室を持ちそし
て下記のラムのピストンの嵌装部を持った液室と、Ｃ液
室に設けられた液出入口と、増圧ピストンと一体化し隔
壁ブロックを嵌装貫通しＣ，Ｄ液室に突出するそして増
圧ピストンより小径で液室嵌装部に嵌装するピストンと
下記の弁機構を持ったラムと、Ａ，Ｂ，Ｃ，Ｄの各液室
とそれらを連通する液通路に満たされた液体と、上記ピ
ストンの嵌装部通路に伴うＤ液室とＢ，Ｃ液室の差圧と
、上記ピストンが嵌装部に嵌装している状態でＣとＤ液
室を連通する通路と、上記差圧のＰ＿１に依り液通路１
０を閉としばねに依り戻り作動する弁体と、上記の差圧
Ｐ＿１より大きいＰ＿２に依り通路１２を開としばねに
依り戻り作動する弁体を持ったことを特徴とする、シリ
ンダーに依る低圧力及び高圧力液供給機構。(2) A floating piston that is fitted in the first and second cylinders to form a supply fluid chamber and a liquid chamber A, and that operates depending on the supply fluid and returns to operation depending on the supply fluid, and a floating piston that is fitted in the second cylinder and forms the supply fluid chamber and the A liquid chamber. and B, which form liquid chambers, and are operated by the operation of the valve mechanism described below, and return operated by the supplied fluid, and are integrated with the bulkhead block and have liquid chambers C and D, into which the piston of the ram described below is fitted. A liquid chamber with a mounting part, a liquid inlet/outlet provided in liquid chamber C, a liquid chamber that is integrated with the pressure booster piston, fits through the partition block and projects into liquid chambers C and D, and a liquid chamber with a smaller diameter than the pressure booster piston. A piston to be fitted into the fitting part, a ram having the following valve mechanism, liquid filled in each of the liquid chambers A, B, C, and D and a liquid passage connecting them, and the fitting part of the piston. Due to the differential pressure between the D liquid chamber and the B and C liquid chambers due to the passage, the passage that communicates the C and D liquid chambers with the piston fitted in the fitting part, and the differential pressure P_1, the liquid Passage 1
0 is closed and the valve body is operated back by a spring, and the valve body is operated by a spring to open the passage 12 due to the pressure difference P_2 which is greater than the above-mentioned differential pressure P_1. Pressure and high pressure liquid supply mechanism. （３）第１、２シリンダーに嵌装し供給液体室及びＡ液
室を形成するそして供給液体に依り作動し供給液に依り
戻り作動する遊動ピストンと、第２シリンダーに嵌装し
供給液体室及びＢ液室を形成するそして下記の弁機構の
作動に依り作動し供給流体に依り戻り作動する増圧ピス
トンと、隔壁ブロツクと一体化しＣ，Ｄ液室を持ちそし
て下記のラムのピストンの嵌装部を持った液室と、Ｃ液
室に設けられた液出入口と、増圧ピストンと一体化し隔
壁ブロックを嵌装貫通しＣ，Ｄ液室に突出するそして増
圧ピストンより小径で液室嵌装部に嵌装するピストンと
下記の弁機構を持ったラムと、Ａ，Ｂ，Ｃ，Ｄの各液室
とそれらを連通する液通路に満たされた液体と、上記ピ
ストンの嵌装部通過に伴うＤ液室とＢ，Ｃ液室の差圧と
、上記ピストンが嵌装部に嵌装している状態でＣとＤ液
室を連通する通路と、上記差圧に依り液通路１０を閉と
しばねに依り戻り作動するそして液通路１４と上記の差
圧に依り液通路１４を閉とする弁を持った弁体を有する
ことを特徴とする、シリンダーに依る低圧力及び高圧力
液供給機構。(3) A floating piston that is fitted in the first and second cylinders to form a supply liquid chamber and a liquid chamber A, and that operates depending on the supply liquid and returns to operation depending on the supply liquid, and a floating piston that is fitted in the second cylinder and forms the supply liquid chamber and the A liquid chamber. and B, which form liquid chambers, and are operated by the operation of the valve mechanism described below, and return operated by the supplied fluid, and are integrated with the bulkhead block, and have liquid chambers C and D, into which the piston of the ram described below is fitted. A liquid chamber with a mounting part, a liquid inlet/outlet provided in liquid chamber C, a liquid chamber that is integrated with the pressure booster piston, fits through the partition block and projects into liquid chambers C and D, and a liquid chamber with a smaller diameter than the pressure booster piston. A piston to be fitted into the fitting part, a ram having the following valve mechanism, liquid filled in each of the liquid chambers A, B, C, and D and a liquid passage connecting them, and the fitting part of the piston. Due to the differential pressure between the D liquid chamber and the B and C liquid chambers as they pass through, the passage that communicates the C and D liquid chambers with the piston fitted in the fitting part, and the liquid passage 10 due to the differential pressure. A low-pressure and high-pressure liquid using a cylinder, characterized in that it has a valve body having a valve that closes the liquid passage 14 and closes the liquid passage 14 according to the above-mentioned differential pressure. supply mechanism. （４）第１，２シリンダーに嵌装し供給液体室及びＡ液
室を形成するそして供給液体に依り作動し供給液に依り
戻り作動する遊動ピストンと、第２シリンダーに嵌装し
供給液体室及びＢ液室を形成するそして下記の弁機構の
作動に依り作動し供給流体に依り戻り作動する増圧ピス
トンと、隔壁ブロックと一体化しＣ，Ｄ液室を持ちそし
て下記のラムのピストンの嵌装部を持った液室と、Ｃ液
室に設けられた液出入口と、増圧ピストンと一体化し隔
壁ブロックを嵌装貫通しＣ，Ｄ液室に突出するそして増
圧ピストンより小径で液室嵌装部に嵌装するピストンと
下記の弁機構を持ったラムと、Ａ，Ｂ，Ｃ，Ｄの各液室
とそれらを連通する液通路に満たされた液体と、上記ピ
ストンの嵌装部通過に伴うＤ液室とＢ，Ｃ液室の差圧と
、上記ピストンが嵌装部に嵌装している状態でＣとＤ液
室を連通する通路と、上記差圧に依り液通路１０を閉と
しばねに依り戻り作動する弁体を有することを特徴とす
る、シリンダーに依る低圧力及び高圧力液供給機構。(4) A floating piston that is fitted in the first and second cylinders to form a supply liquid chamber and a liquid chamber A, and that operates depending on the supply liquid and returns to operation depending on the supply liquid, and a floating piston that is fitted in the second cylinder and forms the supply liquid chamber and the A liquid chamber. and B, which form liquid chambers, and are operated by the operation of the valve mechanism described below, and return operated by the supplied fluid, and are integrated with the bulkhead block and have liquid chambers C and D, into which the piston of the ram described below is fitted. A liquid chamber with a mounting part, a liquid inlet/outlet provided in liquid chamber C, a liquid chamber that is integrated with the pressure booster piston, fits through the partition block and projects into liquid chambers C and D, and a liquid chamber with a smaller diameter than the pressure booster piston. A piston to be fitted into the fitting part, a ram having the following valve mechanism, liquid filled in each of the liquid chambers A, B, C, and D and a liquid passage connecting them, and the fitting part of the piston. Due to the differential pressure between the D liquid chamber and the B and C liquid chambers as they pass through, the passage that communicates the C and D liquid chambers with the piston fitted in the fitting part, and the liquid passage 10 due to the differential pressure. A cylinder-based low-pressure and high-pressure liquid supply mechanism, characterized in that it has a valve body that is operated by a spring to close and return. （５）第１，２シリンダーに嵌装し供給流体室及びＡ液
室を形成するそして供給流体に依り作動し供給液に依り
戻り作動する遊動ピストンと、第２シリンダーに嵌装し
供給液体室及びＢ液室を形成するそして下記の弁機構の
作動に依り作動し供給流体に依り戻り作動する増圧ピス
トンと、隔壁ブロツクと一体化しＣ，Ｄ液室を持ちそし
て下記のラムのピストンの嵌装部を持った液室と、Ｃ液
室に設けられた液出入口と、増圧ピストンと一体化し隔
壁ブロックを嵌装貫通しＣ，Ｄ液室に突出するそして増
圧ピストンより小径で液室嵌装部に嵌装するピストンと
下記の弁機構を持ったラムと、Ａ，Ｂ，Ｃ，Ｄの各液室
とそれらを連通する液通路に満たされた液体と、上記ピ
ストンの嵌装部通過に伴うＤ液室とＢ，Ｃ液室の差圧と
、上記差圧のＰ＿１に依り液通路１０を閉としばねに依
り戻り作動する弁体と、上記の差圧Ｐ＿１より大きいＰ
＿２に依り通路１２を開としばねに依り戻り作動する弁
体を持ったことを特徴とする、シリンダーに依る低圧力
及び高圧力液供給機構。(5) A floating piston that is fitted in the first and second cylinders to form a supply fluid chamber and a liquid chamber A, and that operates depending on the supply fluid and returns to operation depending on the supply fluid, and a floating piston that is fitted in the second cylinder and forms the supply fluid chamber and the A liquid chamber. and B, which form liquid chambers, and are operated by the operation of the valve mechanism described below, and return operated by the supplied fluid, and are integrated with the bulkhead block, and have liquid chambers C and D, into which the piston of the ram described below is fitted. A liquid chamber with a mounting part, a liquid inlet/outlet provided in liquid chamber C, a liquid chamber that is integrated with the pressure booster piston, fits through the partition block and projects into liquid chambers C and D, and a liquid chamber with a smaller diameter than the pressure booster piston. A piston to be fitted into the fitting part, a ram having the following valve mechanism, liquid filled in each of the liquid chambers A, B, C, and D and a liquid passage connecting them, and the fitting part of the piston. Due to the differential pressure between the D liquid chamber and the B and C liquid chambers as they pass, and the above differential pressure P_1, the valve body closes the liquid passage 10 and returns due to the spring, and the pressure P greater than the above differential pressure P_1
A cylinder-based low-pressure and high-pressure liquid supply mechanism, characterized in that it has a valve body that opens the passage 12 according to _2 and is operated back by a spring.