JP2008208879A - Pinch valve and equipment with the pinch valve - Google Patents

Pinch valve and equipment with the pinch valve Download PDF

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JP2008208879A
JP2008208879A JP2007044780A JP2007044780A JP2008208879A JP 2008208879 A JP2008208879 A JP 2008208879A JP 2007044780 A JP2007044780 A JP 2007044780A JP 2007044780 A JP2007044780 A JP 2007044780A JP 2008208879 A JP2008208879 A JP 2008208879A
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pressing member
rotating body
pinch valve
tube
rotating
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JP4931636B2 (en
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Yoshinori Domae
美徳 堂前
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Oki Data Infotech Corp
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Oki Data Infotech Corp
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/02Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
    • F16K7/04Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
    • F16K7/06Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of a screw-spindle, cam, or other mechanical means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/003Housing formed from a plurality of the same valve elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22Valves or arrangement of valves
    • A61M39/28Clamping means for squeezing flexible tubes, e.g. roller clamps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009Special features
    • F04B43/0081Special features systems, control, safety measures

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multiple string pinch valve capable of reducing pressure fluctuation of liquid in front/rear of a pressing part and suppressing damage of a tube when the tube is pressed by using a rotating body of which rotation is controlled by a motor. <P>SOLUTION: In the pinch valve, the tube is not directly pressed by the rotating body, but pressed by a pressing member movable to a fixed direction by a guide. At the same time, since a tip of the pressing member is formed to have a tapered shape, pressure fluctuation in front/rear of the tube pressing part can be reduced, and damage of the tube can be prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ピンチバルブ及び該ピンチバルブを具備する機器に関する。   The present invention relates to a pinch valve and a device including the pinch valve.

従来、多連ピンチバルブとは特許文献1にあるように、一本のシャフトで複数のカムを駆動させ、カムで直接チューブを押さえるか、またはカムとチューブの間に押さえ板を介してチューブを押さえることでチューブ内の液体の流れを止めていた。   Conventionally, a multiple pinch valve, as disclosed in Patent Document 1, drives a plurality of cams with a single shaft and directly presses the tube with the cam, or holds the tube via a pressing plate between the cam and the tube. The flow of liquid in the tube was stopped by pressing.

従来の技術では、チューブ押圧時カムの円弧部分がチューブまたは押さえ板と直接接触しており、チューブを傷つけ難い形状として、カムは円形を基準にして一部の円弧部分を弓形に切り取った形になっていた。
特開平09‐303582号公報
In the conventional technology, when the tube is pressed, the arc portion of the cam is in direct contact with the tube or the holding plate, making the tube difficult to damage. It was.
JP 09-303582 A

従来の技術において、カムでチューブを直接押さえる場合、チューブ押圧部分の接触面積が大きく流路の体積変化も大きいため、チューブ内で押圧部の多くの流体が押圧部前後に移動してしまうし、カムの回転速度が速いほど、チューブ内で押圧部前後の流体の圧力変動も大きくなる。また、カムとチューブが擦れることによりチューブを傷つける原因となり、駆動源であるモータの負荷も大きくなる。   In the conventional technique, when the tube is directly pressed by the cam, the contact area of the tube pressing portion is large and the volume change of the flow path is also large. As the rotational speed of the cam increases, the pressure fluctuation of the fluid before and after the pressing portion in the tube also increases. In addition, rubbing between the cam and the tube causes damage to the tube, and the load on the motor, which is a drive source, also increases.

押さえ板を介してチューブを押さえる場合、カムでチューブを直接押圧するよりも押圧部の接触面積が大きく、上記と同様にチューブ内で押圧部の多くの流体が押圧部前後に移動してしまうし、カムの回転速度が速いほど、チューブ内で押圧部前後の流体の圧力変動も大きくなってしまう。同時に、カムと押さえ板間の摩擦力により駆動源であるモータの負荷も大きくなる。また、押さえ板に一定方向に可動させる為のガイドが無いため、押さえ板とチューブが擦れることによりチューブを傷つける原因となる。   When the tube is pressed through the pressing plate, the contact area of the pressing portion is larger than when the tube is directly pressed by the cam, and much fluid in the pressing portion moves back and forth within the tube in the same manner as described above. As the cam rotational speed increases, the pressure fluctuation of the fluid before and after the pressing portion in the tube also increases. At the same time, the load on the motor, which is the drive source, increases due to the frictional force between the cam and the pressing plate. Further, since there is no guide for moving the pressing plate in a certain direction, the pressing plate and the tube rub against each other, which causes the tube to be damaged.

本発明は、押圧部材がチューブ押圧するときの押圧部前後の流体の圧力変動を小さくし、バルブを駆動させるための必要動力を小さくするピンチバルブを提供する。また、このピンチバルブを具備する機器を提供する。   The present invention provides a pinch valve that reduces the pressure fluctuation of the fluid before and after the pressing portion when the pressing member presses the tube, and reduces the necessary power for driving the valve. Moreover, the apparatus which comprises this pinch valve is provided.

本発明は、回転可能な回転体と、前記回転体の回転に応じて移動する押圧部材と、前記押圧部材を一定方向に往復移動させるためのガイドと、を有し、前記押圧部材の位置に応じて流量を調節することにより、上記課題を解決したものである。

上述課題を解決するための本発明の第一の態様は、回転軸によって回転可能な回転体と、前記回転体の回転に応じて可動する押圧部材と、前記押圧部材を一定方向に可動させるためのガイドと、前記押圧部材の可動方向に前記押圧部材と対向する位置に配置された壁部とを有し、前記押圧部材と前記壁部によってチューブを押圧し、前記押圧部材の位置に応じて前記チューブ内を流れる液体の流量を調節することを特徴とするピンチバルブである。
The present invention has a rotatable rotating body, a pressing member that moves in accordance with the rotation of the rotating body, and a guide for reciprocating the pressing member in a fixed direction, and is located at the position of the pressing member. The above problem is solved by adjusting the flow rate accordingly.

A first aspect of the present invention for solving the above-described problems is a rotating body that can be rotated by a rotating shaft, a pressing member that can move according to the rotation of the rotating body, and a mechanism that moves the pressing member in a certain direction. And a wall portion disposed at a position facing the pressing member in the movable direction of the pressing member, pressing the tube by the pressing member and the wall portion, and depending on the position of the pressing member The pinch valve is characterized in that the flow rate of the liquid flowing in the tube is adjusted.

また、本発明の第二の態様は、前記回転体は、回転軸からの距離が異なる辺部を有し、前記回転体が回転することで前記辺部と前記押圧部材が接する位置が可変し、前記辺部の形状に応じて前記押圧部材を可動させることを特徴とする第一の態様に記載のピンチバルブである。   Further, according to a second aspect of the present invention, the rotating body has side portions having different distances from the rotation axis, and the position where the side portion and the pressing member are in contact with each other is variable by the rotation of the rotating body. The pinch valve according to the first aspect, wherein the pressing member is moved in accordance with the shape of the side portion.

また、本発明の第三の態様は、前記押圧部材は、前記チューブ側の端部が先端方向にいくほど断面積が小さくなる形状を有することを特徴とする第一の態様または第二の態様に記載のピンチバルブである。   In addition, according to a third aspect of the present invention, in the first aspect or the second aspect, the pressing member has a shape in which a cross-sectional area becomes smaller as an end portion on the tube side goes in a distal direction. It is a pinch valve of description.

また、本発明の第四の態様は、前記回転体は、複数の凹部を有するカム基礎部と、前記カム基礎部の凹部に着脱可能な凸部を有するカム駒部とを有し、前記カム基礎部に1つ以上の前記カム駒部を取り付けることで、前記回転体の辺部の一部を形成することを特徴とする第一の態様から第三の態様のいずれか一に記載のピンチバルブである。   According to a fourth aspect of the present invention, the rotating body includes a cam base portion having a plurality of concave portions, and a cam piece portion having a convex portion detachable from the concave portion of the cam base portion. The pinch according to any one of the first to third aspects, wherein a part of a side part of the rotating body is formed by attaching one or more cam pieces to a base part. It is a valve.

また、本発明の第5の態様は、前記押圧部材は、前記押圧部材の一端に支持軸を有し、前記支持軸を中心に回転可能に支持されたローラ部と、前記押圧部材の他端に凸状の押圧突起と、を有し、前記回転体が回転して前記辺部が前記ローラ部に接触することにより、前記押圧部材を可動させることを特徴とする第一の態様に記載のピンチバルブである。   Further, according to a fifth aspect of the present invention, the pressing member has a support shaft at one end of the pressing member, the roller portion is supported rotatably about the support shaft, and the other end of the pressing member. A convex pressing protrusion, and the rotating member rotates and the side portion contacts the roller portion to move the pressing member. It is a pinch valve.

また、本発明の第六の態様は、前記回転体は回転軸方向の面に支持軸を有し、前記押圧部材は伝達軸を有し、伝達材の一方の端部を前記支持軸で支持し、他方の端部を前記伝達軸で支持することで、前記回転体の回転運動が前記伝達材を介して前記押圧部材を前記ガイドに沿って可動させることを特徴とする第一の態様に記載のピンチバルブである。   According to a sixth aspect of the present invention, the rotating body has a support shaft on the surface in the direction of the rotation axis, the pressing member has a transmission shaft, and one end of the transmission material is supported by the support shaft. Then, by supporting the other end portion with the transmission shaft, the rotational movement of the rotating body moves the pressing member along the guide via the transmission material. It is a pinch valve of description.

また、本発明の第七の態様は、前記ピンチバルブは、前記回転体の回転軸方向に対する垂直方向に前記押圧部材と前記壁部を有することを特徴とする第一の態様から第六の態様のいずれか一に記載のピンチバルブである。   Further, according to a seventh aspect of the present invention, the pinch valve includes the pressing member and the wall portion in a direction perpendicular to a rotation axis direction of the rotating body. It is a pinch valve as described in any one of these.

また、本発明の第八の態様は、前記回転体は複数の回転体で構成され、前記複数の回転体の回転軸が同一の軸であることを特徴とする第一の態様から第七の態様いずれか一に記載のピンチバルブである。   Further, according to an eighth aspect of the present invention, the rotating body includes a plurality of rotating bodies, and the rotating shafts of the plurality of rotating bodies are the same axis. The pinch valve according to any one of the aspects.

また、本発明の第九の態様は、第一の態様から第八の態様のいずれか一に記載のピンチバルブを具備するピンチバルブを具備する機器である。
According to a ninth aspect of the present invention, there is provided a device including the pinch valve including the pinch valve according to any one of the first to eighth aspects.

押圧部材がチューブ押圧するときの押圧部前後の流体の圧力の変動を小さくし、バルブを駆動させるための必要動力を小さくできる。また、このピンチバルブを具備した機器はバルブを駆動させるための必要動力を小さくできるので小型化できる。   The fluctuation in the pressure of the fluid before and after the pressing portion when the pressing member presses the tube can be reduced, and the necessary power for driving the valve can be reduced. In addition, a device equipped with this pinch valve can be reduced in size because the power required for driving the valve can be reduced.

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1は、本発明であるピンチバルブの構成例を示す図であり、図2は本発明のピンチバルブを動作させる制御回路のブロック図である。図1のピンチバルブは4つのピンチバルブを1つの軸で駆動する例を示した図である。筐体1はピンチバルブの筐体である。筐体1は回転体2の軸方向の片面が開口部を有し、回転体2と回転体2に接触して可動する押圧部材3が内蔵されている。回転体2が回転して回転体2の辺部14が押圧部材3に接触し、前記押圧部3材がガイド4に沿った方向に可動する。   FIG. 1 is a diagram showing a configuration example of a pinch valve according to the present invention, and FIG. 2 is a block diagram of a control circuit for operating the pinch valve according to the present invention. The pinch valve of FIG. 1 is a diagram showing an example in which four pinch valves are driven by one shaft. The case 1 is a case of a pinch valve. The casing 1 has an opening on one side of the rotating body 2 in the axial direction, and includes a rotating member 2 and a pressing member 3 that is movable in contact with the rotating body 2. The rotating body 2 rotates and the side portion 14 of the rotating body 2 comes into contact with the pressing member 3, and the pressing portion 3 material moves in a direction along the guide 4.

押圧部材3とガイド4に対して垂直に配置された壁部5とそれに沿った溝が筐体1に設けられている。この壁部5に沿った溝にチューブ6を配置する。押圧部材3の位置によって、押圧部材3と壁部5の距離がかわり、この距離に応じて、押圧部材3と壁部5の間に挟まれたチューブ6の変形量が変わる。チューブ6の変形量を制御して変えることで、チューブ6内を流れる流体の流量調節を行うことができる。   The casing 1 is provided with a wall portion 5 arranged perpendicular to the pressing member 3 and the guide 4 and a groove along the wall portion 5. The tube 6 is disposed in the groove along the wall portion 5. The distance between the pressing member 3 and the wall portion 5 changes depending on the position of the pressing member 3, and the deformation amount of the tube 6 sandwiched between the pressing member 3 and the wall portion 5 changes according to this distance. By controlling and changing the deformation amount of the tube 6, the flow rate of the fluid flowing in the tube 6 can be adjusted.

この例では、4個のピンチバルブが各ピンチバルブを同方向にした状態で連結している。4個のピンチバルブの回転体2は同位置に回転軸7を有し、回転体2はモータ8の動力を伝達する動力軸9と同一軸上に固定されている。制御回路24はピンチバルブを動作させるためにピンチバルブとモータを制御する制御回路24である。モータ8はステッピングモータを使用し、このモータ8は駆動ドライバ10によって駆動される。   In this example, four pinch valves are connected with each pinch valve in the same direction. The four pinch valve rotating bodies 2 have a rotating shaft 7 at the same position, and the rotating body 2 is fixed on the same shaft as the power shaft 9 for transmitting the power of the motor 8. The control circuit 24 is a control circuit 24 that controls the pinch valve and the motor in order to operate the pinch valve. The motor 8 uses a stepping motor, and the motor 8 is driven by a drive driver 10.

回転体2の回転を検出する為に、回転体2の表面の変化を検出する非接触のセンサ11を取り付けている。センサ11と駆動ドライバ10はCPU12と接続されており、CPU12はメモリ13と接続している。CPU12はメモリ13に記憶されているプログラムに基づき全体の制御をおこなう。メモリ13はROM、RAMで構成され、CPU12のプログラムの記憶、演算をおこなう際のワークエリア、初期設定値などの設定値などの記憶をおこなう。   In order to detect the rotation of the rotating body 2, a non-contact sensor 11 that detects a change in the surface of the rotating body 2 is attached. The sensor 11 and the drive driver 10 are connected to the CPU 12, and the CPU 12 is connected to the memory 13. The CPU 12 performs overall control based on a program stored in the memory 13. The memory 13 is composed of a ROM and a RAM, and stores a program of the CPU 12, a work area when performing calculation, a set value such as an initial set value, and the like.

回転体2の表面に基準位置マークを配置する。センサ11によってこの基準位置マークを検出したときの回転体2の位置を基準位置として、回転体2の回転の制御をおこなう。モータ8はステッピングモータなので、駆動パルス数をカウントしてメモリ13に都度記憶することで、メモリ13の記憶しているカウント数を演算することで回転体2が何度回転したか分る。また、好ましくは、駆動パルス数をカウントし、1回転するとリセットされるカウンタを設けることである、これにより駆動パルス数をカウントすることで回転角度を容易に知ることができる。   A reference position mark is arranged on the surface of the rotating body 2. The rotation of the rotating body 2 is controlled using the position of the rotating body 2 when the reference position mark is detected by the sensor 11 as a reference position. Since the motor 8 is a stepping motor, the number of drive pulses is counted and stored in the memory 13, so that the number of rotations of the rotating body 2 can be determined by calculating the count number stored in the memory 13. Preferably, the number of drive pulses is counted, and a counter is provided that is reset after one rotation. Thus, the rotation angle can be easily known by counting the number of drive pulses.

また、回転体2を目的の角度に回転させたいときは、メモリ13に記憶されている現在の位置をカウント数から演算し、目的の角度にする為に駆動すべきパルスス数を演算し、その演算の結果のパルス数分モータ8が回転するようにCPU12がモータ駆動ドライバ10を制御して、モータ8を駆動することで回転体2の回転を制御し、回転体2を回転させる。回転体2が回転することによって、その辺部14が押圧部材3を可動させ、押圧部材3によってチューブ6を押圧することで、チューブ6内の流量を可変する。   When it is desired to rotate the rotator 2 to a target angle, the current position stored in the memory 13 is calculated from the count number, and the number of pulses to be driven to obtain the target angle is calculated. The CPU 12 controls the motor drive driver 10 so that the motor 8 is rotated by the number of pulses as a result of the calculation, and the rotation of the rotating body 2 is controlled by driving the motor 8 to rotate the rotating body 2. When the rotating body 2 rotates, the side portion 14 moves the pressing member 3, and the pressing member 3 presses the tube 6, thereby changing the flow rate in the tube 6.

次に、ピンチバルブの動作を説明する。図3はピンチバルブの駆動方法例を示すフローチャートである。図4はピンチバルブの動作例を示す図である。回転体2は回転軸7からの距離が一定ではない辺部14を有しており、回転体2が回転することで辺部14が押圧部材3と接し、辺部14の形状に応じて押圧部材3が移動する。辺部14上で回転軸7から一番離れた位置と押圧部材3が接した場合に、押圧部材3と壁部5によってチューブ6をはさんで変形させ、流路を完全にふさぐ。また、回転体2を変えて回転軸7から辺部14までの距離を変えることで、流路断面積を可変することも可能である。辺部14は押圧部材3を押圧するようなカム形状となっている。回転体2の辺部14を任意の距離に設定することで、チューブ6内の流体の流量調節を行うことができる。

例として、回転体2を90度回転させてチューブ6を押圧し、バルブを閉状態にする動作を説明する。回転体2のカム形状で凸部15の中央部が、押圧部材3の可動方向に対して時計回りに90度回転させた位置をホームポジションとする。ホームポジションマーク25はセンサ11によってホームポジションを検出する為のマークである。回転体2がホームポジションにあることは回転体2のホームポジションマーク25をセンサ11によって検出した時に、センサ11がCPU12へ信号を出力することでCPU12が判断する。

まず、ホームポジションを探す為にモータ8を駆動する。1パルスごとに駆動する。(ステップ1)。
Next, the operation of the pinch valve will be described. FIG. 3 is a flowchart showing an example of a driving method of the pinch valve. FIG. 4 is a diagram illustrating an operation example of the pinch valve. The rotating body 2 has a side portion 14 whose distance from the rotation shaft 7 is not constant, and the rotating body 2 rotates so that the side portion 14 comes into contact with the pressing member 3 and is pressed according to the shape of the side portion 14. The member 3 moves. When the pressing member 3 is in contact with the position farthest from the rotating shaft 7 on the side portion 14, the tube 6 is deformed by the pressing member 3 and the wall portion 5 to completely block the flow path. It is also possible to change the cross-sectional area of the flow path by changing the rotating body 2 and changing the distance from the rotating shaft 7 to the side portion 14. The side portion 14 has a cam shape that presses the pressing member 3. By setting the side portion 14 of the rotating body 2 to an arbitrary distance, the flow rate of the fluid in the tube 6 can be adjusted.

As an example, the operation of rotating the rotating body 2 90 degrees to press the tube 6 and closing the valve will be described. A position where the central portion of the convex portion 15 in the cam shape of the rotating body 2 is rotated 90 degrees clockwise with respect to the movable direction of the pressing member 3 is defined as a home position. The home position mark 25 is a mark for detecting the home position by the sensor 11. The CPU 12 determines that the rotator 2 is at the home position when the sensor 11 outputs a signal to the CPU 12 when the sensor 11 detects the home position mark 25 of the rotator 2.

First, the motor 8 is driven to find the home position. Drive every pulse. (Step 1).

そして、そのときのセンサ11の検出状態を判断し、センサ11によってホームポジションマーク25が検出するまで1パルスごとにモータ8を駆動する。ここで、センサ11がホームポジションを検出するとステップ3へ移行する。(ステップ2)。   Then, the detection state of the sensor 11 at that time is determined, and the motor 8 is driven every pulse until the home position mark 25 is detected by the sensor 11. Here, when the sensor 11 detects the home position, the process proceeds to step 3. (Step 2).

ここで、例としてあげた回転体2はモータは、1パルス駆動することで0.1度回転するので、90度回転させるには900パルスの駆動させるために、CPU12はモータ駆動ドライバ10へ900パルス駆動する信号を送信する。モータ8はモータ駆動ドライバ10からの信号により、900パルス駆動し、回転体2は90度反時計回りに回転する。(ステップ3)。   Here, the rotating body 2 given as an example rotates the motor by 0.1 degree by being driven by one pulse, so that the CPU 12 sends 900 pulses to the motor driving driver 10 in order to drive 90 pulses to rotate 90 degrees. Transmits a signal for pulse driving. The motor 8 is driven by 900 pulses in response to a signal from the motor drive driver 10, and the rotating body 2 rotates 90 degrees counterclockwise. (Step 3).

モータ駆動ドライバ10がモータ8を90度回転させると、モータ8と軸を同じくして回転する回転体2も90度回転することにより、回転体の凸部15の位置も回転軸7を中心に90度回転し、押圧部材3のローラ16に接触し押圧部材3をガイド4に沿って一定方向に移動させる。押圧部材3はローラ16とは反対側の押圧部17でチューブ6を押圧し、流体の流れを遮断する。   When the motor driver 10 rotates the motor 8 by 90 degrees, the rotating body 2 that rotates in the same axis as the motor 8 also rotates by 90 degrees, so that the position of the convex portion 15 of the rotating body is also centered on the rotating shaft 7. It rotates 90 degrees, contacts the roller 16 of the pressing member 3, and moves the pressing member 3 along the guide 4 in a certain direction. The pressing member 3 presses the tube 6 with the pressing portion 17 on the side opposite to the roller 16 to block the fluid flow.

回転体2がホームポジションの状態では、ローラ16は、回転体2の辺部14の回転軸7に近い状態の辺部で接触している。そのため、押圧突起17はチューブ6の弾性により押し戻され、チューブ6は変形しなし。また、別の態様とし、押圧部材3がチューブ6を押圧しないときにチューブ6を変形させないように回転軸7方向に付勢するバネなどの付勢手段を設けることもできる。   When the rotating body 2 is in the home position, the roller 16 is in contact with the side portion of the side portion 14 of the rotating body 2 that is close to the rotation shaft 7. Therefore, the pressing protrusion 17 is pushed back by the elasticity of the tube 6, and the tube 6 is not deformed. Further, as another aspect, it is possible to provide a biasing means such as a spring that biases the tube 6 in the direction of the rotation shaft 7 so as not to deform the tube 6 when the pressing member 3 does not press the tube 6.

ここで、押圧部材3の形状例について図5を参照して説明する。押圧部材3の押圧部17である端部は、チューブ6押圧時の反力を小さくするためにチューブ6側の端部が先端方向にいくほど断面積が小さくなる形状である。また、その先端はチューブ6を傷つけないように角を丸めた形状をしている。また、押圧部材3のガイド4に接する面と隣り合った2面が押圧部17と逆方向に延長しており、延長部分に軸穴18があり、軸を通してローラ16を保持している。ローラ16は円柱状で円周が回転体2の回転に従って、回転体2の辺部14に接触し、ころがり、回転する構造となっている。ローラ16により、押圧部材3が回転体2との直接接触で傷つくことを防ぎ、引っかかることがないので、且つガイド4により滑らかに一定方向への可動が可能となる。   Here, an example of the shape of the pressing member 3 will be described with reference to FIG. The end portion which is the pressing portion 17 of the pressing member 3 has a shape in which the cross-sectional area becomes smaller as the end portion on the tube 6 side goes in the distal direction in order to reduce the reaction force when the tube 6 is pressed. Further, the tip has a rounded shape so as not to damage the tube 6. Further, two surfaces adjacent to the surface of the pressing member 3 that are in contact with the guide 4 extend in the opposite direction to the pressing portion 17, and there is a shaft hole 18 in the extended portion, and the roller 16 is held through the shaft. The roller 16 has a cylindrical shape and the circumference contacts the side portion 14 of the rotating body 2 as the rotating body 2 rotates, and is rolled and rotated. The roller 16 prevents the pressing member 3 from being damaged by direct contact with the rotating body 2 and does not get caught, and the guide 4 can smoothly move in a certain direction.

図6は2方向にチューブがある本発明の例を示す図である。回転体2の回転軸7を中心として回転軸7に垂直な面上の複数方向に押圧部材3とガイド4、チューブ6、壁部5を配置することができる。ここでは、回転軸7を通る直線上に、回転軸7を中心にそれぞれ逆の方向である2方向に押圧部材3を設けた例である。回転体2が回転することにより、複数の押圧部材3が回転体2と接触し、回転体2の回転軸7に垂直方向に配置された辺部と各押圧部材3が接触することで、ガイドに沿って押圧部材3を可動させて押圧部材3の押圧部17と壁部5でチューブ6を押圧する。この方法は、2方向に限らず、複数方向で可能なため、ひとつのピンチバルブで複数のチューブの開閉を行うことが可能となる。   FIG. 6 is a diagram showing an example of the present invention having a tube in two directions. The pressing member 3, the guide 4, the tube 6, and the wall portion 5 can be arranged in a plurality of directions on a plane perpendicular to the rotating shaft 7 around the rotating shaft 7 of the rotating body 2. In this example, the pressing members 3 are provided in two directions, which are opposite to each other about the rotation shaft 7, on a straight line passing through the rotation shaft 7. By rotating the rotating body 2, the plurality of pressing members 3 come into contact with the rotating body 2, and the side portions arranged in the direction perpendicular to the rotation shaft 7 of the rotating body 2 and the pressing members 3 come into contact with each other. Then, the pressing member 3 is moved along and the tube 6 is pressed by the pressing portion 17 and the wall portion 5 of the pressing member 3. Since this method is possible not only in two directions but also in a plurality of directions, a plurality of tubes can be opened and closed with one pinch valve.

次に、その他の回転体2による押圧部材3の可動方法について説明する。図7は本発明の第二の実施形態の模式図である。回転体2をカム基礎部19とカム駒部20の二つに分けた構造を有する。カム基礎部19は複数の凹部を有し、凹部は表面に向けて開口部が狭くなる形状を有し、カム駒部20はカム基礎部19の凹部にはまる形状の凸部を有しており、はめ合せた際のガタや抜けを防止する形状となっている。カム基礎部19の任意の方向にカム駒部20を取り付けることで、任意の位置で押圧部材3と接触することが可能となる。この方法も回転軸7に対して垂直な面上で複数方向に押圧部材3、ガイド4、チューブ6、壁部5を配置して使用可能である。   Next, the moving method of the pressing member 3 by the other rotary body 2 is demonstrated. FIG. 7 is a schematic diagram of the second embodiment of the present invention. The rotating body 2 is divided into two parts, that is, a cam base portion 19 and a cam piece portion 20. The cam base portion 19 has a plurality of concave portions, the concave portion has a shape in which the opening narrows toward the surface, and the cam piece portion 20 has a convex portion that fits into the concave portion of the cam base portion 19. , It has a shape that prevents backlash and omission when fitted. By attaching the cam piece portion 20 in an arbitrary direction of the cam base portion 19, it is possible to contact the pressing member 3 at an arbitrary position. This method can also be used by disposing the pressing member 3, the guide 4, the tube 6, and the wall portion 5 in a plurality of directions on a plane perpendicular to the rotating shaft 7.

次に図8は本発明の第三の実施形態の模式図である。回転体2による押圧部材3の可動方法を説明する。回転体2に取り付けた回転可能な伝達軸21を伝達材22の端部に取り付け、押圧部材3に取り付けた支持軸23を伝達材22の他端に取り付けることで連結し、回転体2の回転が伝達材22を介して押圧部材3をガイド4に沿って可動させる方法である。この方法では、モータ8の動力軸9を回転体2の回転軸とせず、動力軸9を回転体2外周面に接触させることで回転させる。この方法は、伝達材22が動力軸9に接触する範囲外の回転軸7に対して垂直な面上で複数方向に、押圧部材3、ガイド4、チューブ6、壁部5を配置して使用できる。   Next, FIG. 8 is a schematic diagram of the third embodiment of the present invention. A method for moving the pressing member 3 by the rotating body 2 will be described. A rotatable transmission shaft 21 attached to the rotator 2 is attached to the end of the transmission member 22, and a support shaft 23 attached to the pressing member 3 is attached to the other end of the transmission member 22 to be connected to rotate the rotator 2. Is a method of moving the pressing member 3 along the guide 4 via the transmission member 22. In this method, the power shaft 9 of the motor 8 is not used as the rotating shaft of the rotating body 2 but is rotated by bringing the power shaft 9 into contact with the outer peripheral surface of the rotating body 2. In this method, the pressing member 3, the guide 4, the tube 6, and the wall portion 5 are arranged and used in a plurality of directions on a plane perpendicular to the rotating shaft 7 outside the range where the transmission material 22 contacts the power shaft 9. it can.

本発明であるピンチバルブの構成例を示す図である。It is a figure which shows the structural example of the pinch valve which is this invention. 本発明のピンチバルブを動作させる制御回路のブロック図である。It is a block diagram of the control circuit which operates the pinch valve of this invention. ピンチバルブの駆動方法例を示すフローチャートである。It is a flowchart which shows the example of a drive method of a pinch valve. ピンチバルブの動作例を示す図である。It is a figure which shows the operation example of a pinch valve. ピンチバルブの押圧部材の構造図である。It is a structural diagram of the pressing member of the pinch valve. 2方向にチューブがある本発明の例を示す図である。It is a figure which shows the example of this invention which has a tube in 2 directions. 本発明の第二の実施形態の模式図である。It is a schematic diagram of 2nd embodiment of this invention. 本発明の第三の実施形態の模式図である。It is a schematic diagram of 3rd embodiment of this invention.

符号の説明Explanation of symbols

1 筐体
2 回転体
3 押圧部材
4 ガイド(筐体)
5 壁部(筐体)
6 チューブ
7 回転軸(回転体)
8 モータ
9 動力軸
10 モータ駆動用ドライバ
11 センサ
12 CPU
13 メモリ
14 辺部(回転体)
15 凸部(回転体)
16 ローラ(押圧部材)
17 押圧部
18 軸穴
19 カム基礎部
20 カム駒部
21 伝達軸
22 伝達材
23 支持軸
24 制御回路
25 ホームポジションマーク
DESCRIPTION OF SYMBOLS 1 Case 2 Rotating body 3 Pressing member 4 Guide (housing)
5 Wall (housing)
6 Tube 7 Rotating shaft (Rotating body)
8 Motor 9 Power shaft 10 Driver for motor drive 11 Sensor 12 CPU
13 Memory 14 Side (Rotating body)
15 Convex part (rotating body)
16 Roller (Pressing member)
17 Pressing portion 18 Shaft hole 19 Cam base portion 20 Cam piece portion 21 Transmission shaft 22 Transmission material 23 Support shaft 24 Control circuit 25 Home position mark

Claims (9)

回転軸によって回転可能な回転体と、前記回転体の回転に応じて可動する押圧部材と、前記押圧部材を一定方向に可動させるためのガイドと、前記押圧部材の可動方向に前記押圧部材と対向する位置に配置された壁部とを有し、前記押圧部材と前記壁部によってチューブを押圧し、前記押圧部材の位置に応じて前記チューブ内を流れる液体の流量を調節することを特徴とするピンチバルブ。   A rotating body rotatable by a rotating shaft, a pressing member movable according to the rotation of the rotating body, a guide for moving the pressing member in a fixed direction, and facing the pressing member in a moving direction of the pressing member A wall portion disposed at a position where the tube is pressed by the pressing member and the wall portion, and the flow rate of the liquid flowing in the tube is adjusted according to the position of the pressing member. Pinch valve. 前記回転体は、回転軸からの距離が異なる辺部を有し、前記回転体が回転することで前記辺部と前記押圧部材が接する位置が可変し、前記辺部の形状に応じて前記押圧部材を可動させることを特徴とする請求項1に記載のピンチバルブ。   The rotating body has side portions with different distances from the rotation axis, and the rotating body rotates to change a position where the side portion and the pressing member are in contact with each other, and the pressing according to the shape of the side portion. The pinch valve according to claim 1, wherein the member is movable. 前記押圧部材は、前記チューブ側の端部が先端方向にいくほど断面積が小さくなる形状を有することを特徴とする請求項1または請求項2に記載のピンチバルブ。   3. The pinch valve according to claim 1, wherein the pressing member has a shape in which a cross-sectional area decreases as an end portion on the tube side goes in a distal end direction. 前記回転体は、複数の凹部を有するカム基礎部と、前記カム基礎部の凹部に着脱可能な凸部を有するカム駒部とを有し、前記カム基礎部に1つ以上の前記カム駒部を取り付けることで、前記回転体の辺部の一部を形成することを特徴とする請求項1から請求項3のいずれか1項に記載のピンチバルブ。   The rotating body includes a cam base portion having a plurality of concave portions, and a cam piece portion having a convex portion detachable from the concave portion of the cam base portion, and the cam base portion includes one or more cam piece portions. The pinch valve according to any one of claims 1 to 3, wherein a part of a side portion of the rotating body is formed by attaching the rotating member. 前記押圧部材は、前記押圧部材の一端に支持軸を有し、前記支持軸を中心に回転可能に支持されたローラ部と、前記押圧部材の他端に凸状の押圧突起と、を有し、前記回転体が回転して前記辺部が前記ローラ部に接触することにより、前記押圧部材を可動させることを特徴とする請求項1に記載のピンチバルブ。   The pressing member has a support shaft at one end of the pressing member, a roller portion rotatably supported around the support shaft, and a convex pressing protrusion at the other end of the pressing member. 2. The pinch valve according to claim 1, wherein the pressing member is moved by rotating the rotating body and contacting the side portion with the roller portion. 前記回転体は回転軸方向の面に支持軸を有し、前記押圧部材は伝達軸を有し、伝達材の一方の端部を前記支持軸で支持し、他方の端部を前記伝達軸で支持することで、前記回転体の回転運動が前記伝達材を介して前記押圧部材を前記ガイドに沿って可動させることを特徴とする請求項1に記載のピンチバルブ。   The rotating body has a support shaft on the surface in the rotation axis direction, the pressing member has a transmission shaft, one end portion of the transmission material is supported by the support shaft, and the other end portion is supported by the transmission shaft. 2. The pinch valve according to claim 1, wherein the pressing member moves the pressing member along the guide through the transmission member by supporting the rotating member. 前記ピンチバルブは、前記回転体の回転軸方向に対する垂直方向に前記押圧部材と前記壁部を有することを特徴とする請求項1から請求項6のいずれか1項に記載のピンチバルブ。   The pinch valve according to any one of claims 1 to 6, wherein the pinch valve includes the pressing member and the wall portion in a direction perpendicular to a rotation axis direction of the rotating body. 前記回転体は複数の回転体で構成され、前記複数の回転体の回転軸が同一の軸であることを特徴とする請求項1から請求項7に記載のピンチバルブ。   The pinch valve according to any one of claims 1 to 7, wherein the rotating body includes a plurality of rotating bodies, and rotation axes of the plurality of rotating bodies are the same axis. 請求項1から請求項8のいずれか1項に記載の前記ピンチバルブを具備するピンチバルブを具備する機器。   The apparatus which comprises the pinch valve which comprises the said pinch valve of any one of Claims 1-8.
JP2007044780A 2007-02-24 2007-02-24 Pinch valve, equipment Expired - Fee Related JP4931636B2 (en)

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WO2013161357A1 (en) * 2012-04-27 2013-10-31 国立大学法人 東京工業大学 Three-port valve
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WO2017090649A1 (en) * 2015-11-24 2017-06-01 国立大学法人東京工業大学 Pinch-type valve and manifold provided with same
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JP2011220451A (en) * 2010-04-09 2011-11-04 Saginomiya Seisakusho Inc Pulse driving device of motor-operated valve and control system of motor-operated valve having the same
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US9279507B2 (en) 2012-04-27 2016-03-08 Tokyo Institute Of Technology Three-port valve
US10407657B2 (en) 2012-09-05 2019-09-10 Hitachi, Ltd. Valve mechanism, cell cultivation apparatus using same, and cell cultivation method
WO2014038024A1 (en) 2012-09-05 2014-03-13 株式会社日立製作所 Valve mechanism, cell cultivation apparatus using same, and cell cultivation method
WO2016174724A1 (en) * 2015-04-28 2016-11-03 株式会社日立製作所 Flow channel unit and culturing device
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CN107923544A (en) * 2015-09-14 2018-04-17 日商乐华生命科學有限公司 Switching valve and the suction blowoff for possessing switching valve
CN107923544B (en) * 2015-09-14 2020-06-05 日商乐华生命科學有限公司 Switching valve and suction/discharge device provided with switching valve
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CN109277802A (en) * 2017-10-13 2019-01-29 平高集团有限公司 Valve string press-loading apparatus and pressing method
CN114178852A (en) * 2022-02-16 2022-03-15 常州恒立气动科技有限公司 Pressing tool and pressing method

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