JP2005090586A - Pressure selector valve - Google Patents

Pressure selector valve Download PDF

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JP2005090586A
JP2005090586A JP2003323153A JP2003323153A JP2005090586A JP 2005090586 A JP2005090586 A JP 2005090586A JP 2003323153 A JP2003323153 A JP 2003323153A JP 2003323153 A JP2003323153 A JP 2003323153A JP 2005090586 A JP2005090586 A JP 2005090586A
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pressure
port
throttle valve
output port
negative pressure
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JP4195846B2 (en
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Ikurou Ogino
育朗 荻野
Masahiro Tada
昌弘 多田
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CKD Corp
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CKD Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure selector valve of simple structure miniaturized in outline dimension. <P>SOLUTION: A spool shaft 19 arranged in a main body 11 of an all port block is driven to switch/shut communication of a plurality of input ports 23a and 23b with an output port 23c to select supply of the positive pressure P to the input ports 23a and 23a, supply of the negative pressure V to the output port 23c, and preservation of the negative pressure in the output port 23c. The main body 11 is provided with a throttle valve 26 to be interposed between the input port 23a and the output port 23c when supplying the positive pressure P and not to be interposed between the input port 23b and the output port 23c when supplying the negative pressure V. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、小物のワークを吸着して搬送する搬送装置に関するものであり、特にワークの吸着と離脱を制御する圧力切換弁に関するものである。   The present invention relates to a conveyance device that adsorbs and conveys a small workpiece, and more particularly to a pressure switching valve that controls adsorption and separation of the workpiece.

図７及び図８は、従来の吸着搬送用圧力切換弁の位置様式を示す。第一の電磁弁１は配管２を介して吸着パッド３に接続され、第二の電磁弁４は絞り弁５を介して配管２に接続される。絞り弁５は第一及び第二の電磁弁１，４の本体部分の外部に設けられる。   7 and 8 show a position pattern of a conventional suction transfer pressure switching valve. The first electromagnetic valve 1 is connected to the suction pad 3 via a pipe 2, and the second electromagnetic valve 4 is connected to the pipe 2 via a throttle valve 5. The throttle valve 5 is provided outside the main body portions of the first and second electromagnetic valves 1 and 4.

第一の電磁弁１にはワークを吸着パッド３に吸着するための負圧Ｖが供給され、第二の電磁弁４には吸着パッド３からワークを離脱させるための正圧Ｐが供給される。そして、ワークの吸着動作時には第一の電磁弁１が開路されて、負圧Ｖが配管２を介して吸着パッド３に供給され、ワークが吸着される。また、ワークの離脱動作時には第二の電磁弁４が開路されて、正圧Ｐが絞り弁５及び配管２を介して吸着パッド３に供給され、ワークが離脱される。このとき、絞り弁５により空気流量が調整されて、ワークの飛散が防止される。   The first electromagnetic valve 1 is supplied with a negative pressure V for adsorbing a workpiece to the suction pad 3, and the second electromagnetic valve 4 is supplied with a positive pressure P for releasing the workpiece from the adsorption pad 3. . When the workpiece is attracted, the first electromagnetic valve 1 is opened, and the negative pressure V is supplied to the suction pad 3 via the pipe 2 to attract the workpiece. Further, during the work detachment operation, the second electromagnetic valve 4 is opened, the positive pressure P is supplied to the suction pad 3 through the throttle valve 5 and the pipe 2, and the work is detached. At this time, the air flow rate is adjusted by the throttle valve 5 to prevent the workpiece from scattering.

図９は、絞り弁を第一及び第二の電磁弁１，４のベース部６に内蔵した例を示すものであり、その動作は図７に示すものと同様である。
図１０及び図１１は、３ポジション５ポート弁にてなるオールポートブロックで２つの単動ソレノイド８，９により制御される圧力切換弁を示す。図１０に示すように、吸着パッド３に接続される配管２にはスピードコントローラ７が介在され、吸着パッド３への負圧の供給時には流量が十分に確保され、正圧の供給時には流量が制限される。 FIG. 9 shows an example in which the throttle valve is built in the base portion 6 of the first and second electromagnetic valves 1 and 4, and the operation thereof is the same as that shown in FIG.
10 and 11 show a pressure switching valve controlled by two single-acting solenoids 8 and 9 in an all-port block composed of a three-position five-port valve. As shown in FIG. 10, a speed controller 7 is interposed in the pipe 2 connected to the suction pad 3, and a sufficient flow rate is secured when negative pressure is supplied to the suction pad 3, and a flow rate is restricted when positive pressure is supplied. Is done.

このような圧力切換弁では、図１１に示すように、ソレノイド８が励磁されると、負圧Ｖがスピードコントローラ７を介して吸着パッド３に供給され、ソレノイド９が励磁されると、正圧Ｐがスピードコントローラ７を介して吸着パッド３に供給される。   In such a pressure switching valve, as shown in FIG. 11, when the solenoid 8 is excited, the negative pressure V is supplied to the suction pad 3 via the speed controller 7, and when the solenoid 9 is excited, the positive pressure is supplied. P is supplied to the suction pad 3 via the speed controller 7.

図７及び図８に示す圧力切換弁では、電磁弁を２個必要とするとともに、絞り弁５が第一及び第二の電磁弁１，４の外部に設けられる。従って、外形寸法が増大するため、搬送装置に搭載する場合において、取付スペースを確保することが困難となるという問題点がある。   In the pressure switching valve shown in FIGS. 7 and 8, two electromagnetic valves are required, and the throttle valve 5 is provided outside the first and second electromagnetic valves 1 and 4. Therefore, since the external dimensions increase, there is a problem that it is difficult to secure a mounting space when mounting on a transport device.

図９に示す構成では、絞り弁５をベース部６内に設けたことにより、ベース部６の外形寸法が増大する。
図１０及び図１１に示す構成では、スピードコントローラ７が電磁弁と別体に設けられ、そのスピードコントローラ７は負圧供給時の自由流れ流量を十分に確保する必要があることから、小型化は困難である。従って、外形寸法の増大を招き、取付スペースの確保が困難となる。 In the configuration shown in FIG. 9, by providing the throttle valve 5 in the base portion 6, the outer dimensions of the base portion 6 increase.
In the configuration shown in FIGS. 10 and 11, the speed controller 7 is provided separately from the solenoid valve, and the speed controller 7 needs to ensure a sufficient free flow rate when supplying negative pressure. Have difficulty. Accordingly, an increase in outer dimensions is caused, and it is difficult to secure a mounting space.

この発明の目的は、簡便な構成でかつ外形寸法の小型化を図り得る圧力切換弁を提供することにある。   An object of the present invention is to provide a pressure switching valve having a simple configuration and capable of reducing the external dimensions.

請求項１に記載の発明では、複数の入力ポートと、１つの出力ポートとの連通を切換え、あるいは連通を遮断して、前記入力ポートに供給される正圧及び負圧の出力ポートへの供給と、出力ポートとの負圧維持を選択可能とした圧力切換弁において、オールポートブロックの本体部には、前記正圧の供給時に前記正圧の入力ポートと出力ポートとの間に介在され、前記負圧の供給時には前記負圧の入力ポートと出力ポートとの間に介在されない絞り弁を備えた。   According to the first aspect of the present invention, communication between a plurality of input ports and one output port is switched, or communication is cut off, and positive pressure and negative pressure supplied to the input port are supplied to the output port. And, in the pressure switching valve that enables selection of negative pressure maintenance with the output port, the main part of the all-port block is interposed between the positive pressure input port and the output port when the positive pressure is supplied, A throttle valve is provided that is not interposed between the negative pressure input port and the output port when the negative pressure is supplied.

請求項２に記載の発明では、前記絞り弁は、前記本体部に取着される絞り弁部に設けた。
請求項３に記載の発明では、前記絞り弁部は、前記本体部の２つのポートを連通する連通路と、前記連通路に介在される絞り弁とで構成し、前記２つのポートは、前記正圧の供給時に正圧の入力ポートと出力ポートとの間に介在し、前記負圧の供給時には前記負圧の入力ポートと出力ポートとの間に介在しないように、切換制御される。 In the invention according to claim 2, the throttle valve is provided in a throttle valve portion attached to the main body portion.
According to a third aspect of the present invention, the throttle valve portion includes a communication passage that communicates two ports of the main body portion, and a throttle valve that is interposed in the communication passage. The switching is controlled so that it is interposed between the positive pressure input port and the output port when the positive pressure is supplied, and is not interposed between the negative pressure input port and the output port when the negative pressure is supplied.

請求項４に記載の発明では、前記絞り弁は、前記連通路に出没可能に設けたニードルで構成した。
請求項５に記載の発明では、前記連通路は、あらかじめ形成されている前記２つのポートに合致するように、前記絞り弁部に形成した。 According to a fourth aspect of the present invention, the throttle valve is constituted by a needle provided in the communication passage so as to be able to appear and retract.
In the invention according to claim 5, the communication path is formed in the throttle valve portion so as to match the two ports formed in advance.

本発明によれば、簡便な構成でかつ外形寸法の小型化を図り得る圧力切換弁を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the pressure switching valve which can aim at size reduction of a simple structure and an external dimension can be provided.

以下、本発明を吸着搬送装置に使用される圧力切換弁に具体化した一実施の形態を図面に従って説明する。図１に示す圧力切換弁は、３ポジション５ポート弁にてなるオールポートブロックで構成され、本体部１１、ベース部１２、第一及び第二のパイロット弁部１３，１４、第一及び第二のピストン室１５，１６及び絞り弁部１７を備える。   Hereinafter, an embodiment in which the present invention is embodied in a pressure switching valve used in an adsorption conveyance device will be described with reference to the drawings. The pressure switching valve shown in FIG. 1 is composed of an all-port block composed of a 3-position 5-port valve, and includes a main body part 11, a base part 12, first and second pilot valve parts 13, 14, first and second parts. Piston chambers 15 and 16 and a throttle valve portion 17.

前記本体部１１内には、前記ベース部１２に形成される５つのポートに連通する流路１８が形成され、その流路１８内にスプール軸１９が移動可能に支持されている。そして、スプール軸１９の移動により各ポートの連通あるいは遮断が選択される。   A flow path 18 that communicates with five ports formed in the base portion 12 is formed in the main body 11, and a spool shaft 19 is movably supported in the flow path 18. The connection or blocking of each port is selected by the movement of the spool shaft 19.

前記第一及び第二のパイロット弁部１３，１４には、第一及び第二のソレノイド２０，２１がそれぞれ配設され、その第一及び第二のソレノイド２０，２１の励磁あるいは非励磁制御によりパイロット弁が開閉される。そして、パイロット弁の開閉に基づいて前記第一及び第二のピストン室１５，１６内の気圧が制御され、ピストン２２ａ，２２ｂが移動するようになっている。   The first and second pilot valve portions 13 and 14 are provided with first and second solenoids 20 and 21, respectively, and are controlled by excitation or non-excitation control of the first and second solenoids 20 and 21, respectively. The pilot valve is opened and closed. The air pressure in the first and second piston chambers 15 and 16 is controlled based on the opening and closing of the pilot valve, so that the pistons 22a and 22b move.

前記スプール軸１９の両端部は、前記ピストン２２ａ，２２ｂに取着される。従って、前記第一及び第二のソレノイド２０，２１の制御に基づいて、ピストン２２ａ，２２ｂが移動すると、スプール軸１９が移動するようになっている。   Both ends of the spool shaft 19 are attached to the pistons 22a and 22b. Therefore, when the pistons 22a and 22b move based on the control of the first and second solenoids 20 and 21, the spool shaft 19 moves.

なお、第一及び第二のソレノイド２０，２１はそのいずれか一方が励磁されるか、あるいは両方励磁されない状態が選択される。そして、第一のソレノイド２０が励磁されると、スプール軸１９が一方へ移動し、第二のソレノイド２１が励磁されると、スプール軸１９が他方へ移動する。また、第一及び第二のソレノイド２０，２１がいずれも励磁されないとき、スプール軸１９は中間位置すなわち中立状態となる。   It should be noted that one of the first and second solenoids 20 and 21 is excited, or a state where both are not excited is selected. When the first solenoid 20 is excited, the spool shaft 19 moves to one side, and when the second solenoid 21 is excited, the spool shaft 19 moves to the other side. When neither the first solenoid 20 nor the second solenoid 21 is excited, the spool shaft 19 is in an intermediate position, that is, in a neutral state.

上記のような第一及び第二のパイロット弁部１３，１４、第一及び第二のピストン室１５，１６、本体部１１及びスプール軸１９の構成及び動作は、公知の圧力切換弁と同様である。   The configurations and operations of the first and second pilot valve portions 13 and 14, the first and second piston chambers 15 and 16, the main body portion 11, and the spool shaft 19 are the same as those of a known pressure switching valve. is there.

前記ベース部１２には５つのポート２３ａ〜２３ｅが形成され、前記本体部１１の下部に開口されたポートを介して前記流路１８に連通されている。そして、第一及び第二のポート２３ａ，２３ｂが入力ポートとして使用され、第三のポート２３ｃが出力ポートとして使用される。他のポートはこの実施の形態では使用されず、封止された状態に維持される。   Five ports 23 a to 23 e are formed in the base portion 12, and communicated with the flow path 18 through ports opened at the lower portion of the main body portion 11. The first and second ports 23a and 23b are used as input ports, and the third port 23c is used as an output port. The other ports are not used in this embodiment and remain sealed.

前記第一のポート２３ａには正圧Ｐが供給され、前記第二のポート２３ｂには負圧Ｖが供給される。また、第三のポート２３ｃが配管を介して図４に示す吸着パッド３に接続される。   A positive pressure P is supplied to the first port 23a, and a negative pressure V is supplied to the second port 23b. The third port 23c is connected to the suction pad 3 shown in FIG. 4 through a pipe.

前記絞り弁部１７は、前記本体部１１の上面に取着される。そして、絞り弁部１７に形成された連通路２４の両端が、本体部１１の上面に開口される２つのポートに接続される。   The throttle valve portion 17 is attached to the upper surface of the main body portion 11. Then, both ends of the communication passage 24 formed in the throttle valve portion 17 are connected to two ports opened on the upper surface of the main body portion 11.

前記絞り弁部１７には、その先端が前記連通路２４内に突出するニードル２５が同連通路２４に対し出没可能に取着されている。従って、連通路２４とニードル２５とで絞り弁２６が形成され、ニードル２５の連通路２４内への突出量を調整することにより、連通路２４の流量を調整可能となっている。   A needle 25 whose tip protrudes into the communication passage 24 is attached to the throttle valve portion 17 so as to be able to appear and retract with respect to the communication passage 24. Accordingly, the throttle valve 26 is formed by the communication path 24 and the needle 25, and the flow rate of the communication path 24 can be adjusted by adjusting the protruding amount of the needle 25 into the communication path 24.

前記スプール軸１９にはシール部材２７が複数箇所に取着され、スプール軸１９の移動にともなって前記流路１８を介した第一〜第三のポート２３ａ〜２３ｃ及び連通路２４の連通あるいは封止が選択される。   Seal members 27 are attached to the spool shaft 19 at a plurality of locations. As the spool shaft 19 moves, the first to third ports 23a to 23c and the communication passage 24 are communicated or sealed through the flow path 18. Stop is selected.

そして、図１に示すように、第一のソレノイド２０が励磁されると、スプール軸１９の移動により第二のポート２３ｂと第三のポート２３ｃとが流路１８を介して連通される。また、第二のソレノイド２１が励磁されると、図３に示すように、スプール軸１９の移動により第一のポート２３ａと第三のポート２３ｃとが流路１８及び絞り弁２６を介して連通される。また、第一及び第二のソレノイド２０，２１がいずれも励磁されないとき、図２に示すように、第一〜第三のポート２３ａ〜２３ｃは互いに連通することなく封止される。   As shown in FIG. 1, when the first solenoid 20 is excited, the movement of the spool shaft 19 causes the second port 23 b and the third port 23 c to communicate with each other via the flow path 18. When the second solenoid 21 is excited, the first port 23a and the third port 23c communicate with each other through the flow path 18 and the throttle valve 26 by the movement of the spool shaft 19 as shown in FIG. Is done. When neither the first solenoid 21 nor the second solenoid 21 is excited, the first to third ports 23a to 23c are sealed without communicating with each other, as shown in FIG.

次に、上記のように構成された圧力切換弁の動作を説明する。第一のソレノイド２０が励磁されると、図１に示すように、第二のポート２３ｂと第三のポート２３ｃとが連通され、連通路２４と流路１８とは遮断される。すると、図４に示すように、負圧Ｖが吸着パッド３に供給され、ワークを吸着可能となる。   Next, the operation of the pressure switching valve configured as described above will be described. When the first solenoid 20 is excited, as shown in FIG. 1, the second port 23b and the third port 23c are communicated, and the communication path 24 and the flow path 18 are blocked. Then, as shown in FIG. 4, the negative pressure V is supplied to the suction pad 3, and the workpiece can be sucked.

次いで、第一のソレノイド２０の励磁が解除されると、図２に示すように、スプール軸１９が中立状態に移動され、第一〜第三のポート２３ａ〜２３ｃ及び連通路２４と流路１８とはすべて遮断される。すると、図５に示すように、吸着パッド３は流路１８と遮断され、負圧が保持された状態となる。この状態では、ワークが吸着パッド３に吸着された状態に維持され、この状態で搬送動作が行われる。   Next, when the excitation of the first solenoid 20 is released, as shown in FIG. 2, the spool shaft 19 is moved to the neutral state, and the first to third ports 23 a to 23 c, the communication path 24 and the flow path 18 are moved. Are all blocked. Then, as shown in FIG. 5, the suction pad 3 is disconnected from the flow path 18, and the negative pressure is maintained. In this state, the work is maintained in the state of being sucked by the suction pad 3, and the transfer operation is performed in this state.

次いで、第二のソレノイド２１が励磁されると、図３に示すように、第一のポート２３ａと第三のポート２３ｃとが連通路２４を介して連通される。すると、図６に示すように、正圧Ｐが連通路２４を介して吸着パッド３に供給され、ワークが吸着パッド３から離脱する。   Next, when the second solenoid 21 is excited, the first port 23a and the third port 23c are communicated via the communication path 24 as shown in FIG. Then, as shown in FIG. 6, the positive pressure P is supplied to the suction pad 3 through the communication path 24, and the workpiece is detached from the suction pad 3.

このとき、連通路２４に介在される絞り弁２６により、吸着パッド３に供給される正圧Ｐを適宜調節可能である。
上記のように構成された圧力切換弁では、次に示す作用効果を得ることができる。
（１）第一及び第二のソレノイド２０，２１の制御により、吸着パッド３に対し負圧Ｖを供給する状態と、負圧Ｖ及び正圧Ｐの供給を遮断して、吸着パッド３での負圧を維持する状態と、吸着パッド３に対し正圧Ｐを供給する状態とのいずれかを選択することができる。従って、１つの電磁弁で正圧Ｐと負圧Ｖの切換えを行うことができる。
（２）正圧Ｐの供給時には、絞り弁２６により供給圧力を適宜調節可能である。従って、過圧によるワークの飛散を未然に防止することができる。
（３）負圧Ｖの供給時には絞り弁２６を介することなく、吸着パッド３に負圧を供給することができる。従って、負圧供給時には十分な流量を確保することができる。
（４）絞り弁２６は、本体部１１に取着した絞り弁部１７で構成することができる。従って、既存の圧力切換弁を構成する本体部１１を使用して、絞り弁を備えた圧力切換弁の小型化を測ることができる。 At this time, the positive pressure P supplied to the suction pad 3 can be adjusted as appropriate by the throttle valve 26 interposed in the communication passage 24.
With the pressure switching valve configured as described above, the following operational effects can be obtained.
(1) By the control of the first and second solenoids 20 and 21, the state in which the negative pressure V is supplied to the suction pad 3 and the supply of the negative pressure V and the positive pressure P are cut off, and the suction pad 3 Either a state in which the negative pressure is maintained or a state in which the positive pressure P is supplied to the suction pad 3 can be selected. Therefore, switching between the positive pressure P and the negative pressure V can be performed with one solenoid valve.
(2) When the positive pressure P is supplied, the supply pressure can be appropriately adjusted by the throttle valve 26. Accordingly, it is possible to prevent the workpiece from being scattered due to overpressure.
(3) When supplying the negative pressure V, the negative pressure can be supplied to the suction pad 3 without using the throttle valve 26. Therefore, a sufficient flow rate can be secured when supplying negative pressure.
(4) The throttle valve 26 can be constituted by the throttle valve portion 17 attached to the main body portion 11. Therefore, it is possible to measure downsizing of the pressure switching valve provided with the throttle valve by using the main body 11 constituting the existing pressure switching valve.

上記各実施の形態は、以下の態様で実施してもよい。
・３ポジション５ポート弁以外の電磁弁に応用することもできる。
・絞り弁２６は、連通路２４に出没可能とするニードル２５以外の任意の構成としてもよい。 Each of the above embodiments may be implemented in the following manner.
-It can also be applied to solenoid valves other than 3 position 5 port valves.
The throttle valve 26 may have an arbitrary configuration other than the needle 25 that can appear and disappear in the communication path 24.

一実施の形態を示す断面図である。It is sectional drawing which shows one embodiment. 一実施の形態の動作を示す断面図である。It is sectional drawing which shows operation | movement of one Embodiment. 一実施の形態の動作を示す断面図である。It is sectional drawing which shows operation | movement of one Embodiment. 一実施の形態の動作を示す説明図である。It is explanatory drawing which shows operation | movement of one Embodiment. 一実施の形態の動作を示す説明図である。It is explanatory drawing which shows operation | movement of one Embodiment. 一実施の形態の動作を示す説明図である。It is explanatory drawing which shows operation | movement of one Embodiment. 従来例を示す斜視図である。It is a perspective view which shows a prior art example. 従来例を示す説明図である。It is explanatory drawing which shows a prior art example. 従来例を示す斜視図である。It is a perspective view which shows a prior art example. 従来例を示す斜視図である。It is a perspective view which shows a prior art example. 従来例を示す説明図である。It is explanatory drawing which shows a prior art example.

符号の説明Explanation of symbols

１１ 本体部
１２ ベース部
１７ 絞り弁部
１９ スプール軸
２３ａ 入力ポート（第一のポート）
２３ｂ 入力ポート（第二のポート）
２３ｃ 出力ポート（第三のポート）
２４ 連通路
２５ ニードル
２６ 絞り弁 DESCRIPTION OF SYMBOLS 11 Main body part 12 Base part 17 Throttle valve part 19 Spool shaft 23a Input port (1st port)
23b Input port (second port)
23c Output port (third port)
24 communication path 25 needle 26 throttle valve

Claims (5)

複数の入力ポートと、１つの出力ポートとの連通を切換え、あるいは連通を遮断して、前記入力ポートに供給される正圧及び負圧の出力ポートへの供給と、出力ポートとの負圧維持を選択可能とした圧力切換弁において、
オールポートブロックの本体部には、前記正圧の供給時に前記正圧の入力ポートと出力ポートとの間に介在され、前記負圧の供給時には前記負圧の入力ポートと出力ポートとの間に介在されない絞り弁を備えたことを特徴とする圧力切換弁。 Switching communication between a plurality of input ports and one output port or blocking communication, supply of positive pressure and negative pressure supplied to the input port to the output port and maintenance of negative pressure with the output port In the pressure switching valve that can be selected,
The main part of the all-port block is interposed between the positive pressure input port and the output port when the positive pressure is supplied, and between the negative pressure input port and the output port when the negative pressure is supplied. A pressure switching valve comprising a throttle valve not interposed. 前記絞り弁は、前記本体部に取着される絞り弁部に設けたことを特徴とする請求項１記載の圧力切換弁。 The pressure switching valve according to claim 1, wherein the throttle valve is provided in a throttle valve portion attached to the main body portion. 前記絞り弁部は、前記本体部の２つのポートを連通する連通路と、前記連通路に介在される絞り弁とで構成し、前記２つのポートは、前記正圧の供給時に正圧の入力ポートと出力ポートとの間に介在し、前記負圧の供給時には前記負圧の入力ポートと出力ポートとの間に介在しないように、切換制御されることを特徴とする請求項２記載の圧力切換弁。 The throttle valve portion is composed of a communication passage that communicates two ports of the main body portion, and a throttle valve that is interposed in the communication passage, and the two ports receive positive pressure when the positive pressure is supplied. 3. The pressure according to claim 2, wherein the pressure is controlled so as to be interposed between the port and the output port and not to be interposed between the input port and the output port of the negative pressure when the negative pressure is supplied. Switching valve. 前記絞り弁は、前記連通路に出没可能に設けたニードルで構成したことを特徴とする請求項２または３記載の圧力切換弁。 4. The pressure switching valve according to claim 2, wherein the throttle valve is configured by a needle provided in the communication path so as to be able to appear and retract. 前記連通路は、あらかじめ形成されている前記２つのポートに合致するように、前記絞り弁部に形成したことを特徴とする請求項３または４記載の圧力切換弁。 The pressure switching valve according to claim 3 or 4, wherein the communication path is formed in the throttle valve portion so as to match the two ports formed in advance.
JP2003323153A 2003-09-16 2003-09-16 Pressure switching valve Expired - Fee Related JP4195846B2 (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138727U (en) * 1974-09-14 1976-03-23
JPS5831402U (en) * 1981-08-27 1983-03-01 焼結金属工業株式会社 Directional valve with exhaust throttle valve
JPS5934444A (en) * 1982-08-20 1984-02-24 Mitsubishi Electric Corp Valve unit for engine control
JPH0612802U (en) * 1992-07-22 1994-02-18 株式会社コガネイ Speed control valve
JPH0658207U (en) * 1993-01-25 1994-08-12 株式会社トキメック Pilot type solenoid proportional valve
JP2000240827A (en) * 1999-02-23 2000-09-08 Taiyo Ltd Two-pressure control valve
JP2000249232A (en) * 1999-03-01 2000-09-12 Taiyo Ltd Exhaust throttle valve construction of directional changeover valve
JP2000343471A (en) * 1999-03-26 2000-12-12 Rigaku Industrial Co Vacuum-suction device and suction-transfer device equipped therewith
JP2002079483A (en) * 2000-09-06 2002-03-19 Koganei Corp Suction conveyance device
JP2002346961A (en) * 2001-05-22 2002-12-04 Koganei Corp Vacuum sucking and carrying device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138727U (en) * 1974-09-14 1976-03-23
JPS5831402U (en) * 1981-08-27 1983-03-01 焼結金属工業株式会社 Directional valve with exhaust throttle valve
JPS5934444A (en) * 1982-08-20 1984-02-24 Mitsubishi Electric Corp Valve unit for engine control
JPH0612802U (en) * 1992-07-22 1994-02-18 株式会社コガネイ Speed control valve
JPH0658207U (en) * 1993-01-25 1994-08-12 株式会社トキメック Pilot type solenoid proportional valve
JP2000240827A (en) * 1999-02-23 2000-09-08 Taiyo Ltd Two-pressure control valve
JP2000249232A (en) * 1999-03-01 2000-09-12 Taiyo Ltd Exhaust throttle valve construction of directional changeover valve
JP2000343471A (en) * 1999-03-26 2000-12-12 Rigaku Industrial Co Vacuum-suction device and suction-transfer device equipped therewith
JP2002079483A (en) * 2000-09-06 2002-03-19 Koganei Corp Suction conveyance device
JP2002346961A (en) * 2001-05-22 2002-12-04 Koganei Corp Vacuum sucking and carrying device

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