JPH03217271A - Constant-amount discharger for liquid - Google Patents
Constant-amount discharger for liquidInfo
- Publication number
- JPH03217271A JPH03217271A JP1175990A JP1175990A JPH03217271A JP H03217271 A JPH03217271 A JP H03217271A JP 1175990 A JP1175990 A JP 1175990A JP 1175990 A JP1175990 A JP 1175990A JP H03217271 A JPH03217271 A JP H03217271A
- Authority
- JP
- Japan
- Prior art keywords
- syringe
- solenoid valve
- liquid
- discharge
- pressure
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims description 81
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
Landscapes
- Coating Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、接着剤、各種ペースト状材料などの粘性流
体を含む液体を、多数の所定吐出位置に、予め定めた吐
出量に従って正確に定量吐出する液体定量吐出装置に関
し、とくには、シリンジ内の残液量の変化およびシリン
ジ内の液体の経時的粘度変化に影響されることのない高
精度の定量吐出を行うとともに、各吐出位置での液体の
切れをよくし、併せて、シリンジ内の液体の不測の洩出
を十分に防止するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is capable of accurately quantifying liquids containing viscous fluids such as adhesives and various paste-like materials to a number of predetermined discharge positions according to a predetermined discharge amount. Regarding the liquid metering dispensing device, in particular, it is possible to perform high-accuracy metered dispensing that is not affected by changes in the amount of liquid remaining in the syringe or changes in the viscosity of the liquid in the syringe over time, and also to This makes it easier to drain the liquid and also sufficiently prevents the liquid inside the syringe from leaking unexpectedly.
シリンジ内の液体の、所定吐出位置での定量吐出は、通
常は、液体が充填されているそのシリンジへ加圧エアを
供給することによって行っており、従来装置による、シ
リンジへの加圧エアの供給制御は、機械式（手動）減圧
弁によって設定された圧力を、吐出用電磁弁を介して、
予め定めた一定時間だけシリンジへ供給することによっ
て行うこととしている。Dispensing a fixed amount of liquid in a syringe at a predetermined dispensing position is usually performed by supplying pressurized air to the syringe filled with liquid. Supply control uses the pressure set by the mechanical (manual) pressure reducing valve via the discharge solenoid valve.
This is done by supplying it to a syringe for a predetermined period of time.
ところで、かかる従来技術にあっては、特定のエア圧力
を一定時間シリンジへ供給することとしていたため、シ
リンジ内の残液量の変化、ときとしては、これに加えて
シリンジ内の液体の経時的粘度変化によって吐出量が変
動するという問題があり、かかる場合には、エア圧力お
よびそれの供給時間の少なくとも一方を、作業者の手に
よって設定し直すことが余儀なくされていた。By the way, in such conventional technology, since a specific air pressure is supplied to the syringe for a certain period of time, changes in the amount of liquid remaining in the syringe and, in some cases, changes in the amount of liquid in the syringe over time. There is a problem in that the discharge amount fluctuates due to changes in viscosity, and in such a case, the operator is forced to manually reset at least one of the air pressure and the air supply time.
しかも、この従来技術では、装置の停止時および、一の
吐出位置から次の吐出位置へのシリンジの移動ときに、
シリンジ内の液体がその自重によって洩出するという問
題があった。Moreover, with this prior art, when the device is stopped and when the syringe is moved from one dispensing position to the next,
There was a problem in that the liquid inside the syringe leaked out due to its own weight.
この発明は、従来技術のかかる問題点に着目してなされ
たものであり、シリンジ内の残液量の変化およびシリン
ジ内の液体の経時的粘度変化に対しても、作業者によっ
てマニュアル操作の必要なしに、高い吐出精度を自動的
に維持することができる他、シリンジ内の洩出を、常に
確実に防止することができる液体定量吐出装置を提供す
るものである。This invention was made by paying attention to such problems in the prior art, and eliminates the need for manual operations by the operator even in response to changes in the amount of liquid remaining in the syringe and changes in the viscosity of the liquid in the syringe over time. The purpose of the present invention is to provide a liquid metering dispensing device that can automatically maintain high dispensing accuracy without having to use a syringe, and can always reliably prevent leakage within a syringe.
この発明の液体定量吐出装置は、吐出用ｉｔ磁弁を介し
てシリンジと、エア供給源およびエア吸引源との接続を
もたらし、その吐出用電磁弁とエア供給源との間には、
電磁弁側から順次にアキュムレータおよび圧力調整用減
圧弁を、また、吐出用電磁弁とエア供給源との間には、
電磁弁側から順次にアキュムレータおよび吸引負圧用減
圧弁をそれぞれ順次に配設したところにおいて、吐出用
電磁弁へ、所定の時間にわたって吐出信号を出力すると
ともに、圧力調整用減圧弁および吸引負圧用減圧弁のそ
れぞれに、シリンジ内の液体の、少なくとも残量に応じ
た圧力設定信号を出力する制御部を設けたものである。The liquid metering discharge device of the present invention connects the syringe to the air supply source and the air suction source via the discharge solenoid valve, and there is a connection between the discharge solenoid valve and the air supply source.
An accumulator and a pressure reducing valve are installed in sequence from the solenoid valve side, and between the discharge solenoid valve and the air supply source,
When an accumulator and a pressure reducing valve for suction negative pressure are sequentially arranged from the solenoid valve side, a discharge signal is output to the discharge solenoid valve for a predetermined period of time, and a pressure reducing valve for pressure adjustment and a pressure reducing valve for suction negative pressure are outputted to the discharge solenoid valve. Each of the valves is provided with a control section that outputs a pressure setting signal corresponding to at least the remaining amount of liquid in the syringe.
ここで好ましくは、前記制御部から、吐出用電磁弁へ出
力される吐出信号の出力時間をもまた、シリンジ内の液
体の、少なくとも残量に応じて変化させることとする。Preferably, the output time of the ejection signal output from the control section to the ejection electromagnetic valve is also changed in accordance with at least the remaining amount of liquid in the syringe.
また好ましくは、吐出用電磁弁と、エア吸引源側のアキ
ュムレータとの間に、シリンジを、エア吸引源もしくは
大気のいずれか一方に選択的に連通させる吸引用電磁弁
を配設する。Preferably, a suction solenoid valve that selectively communicates the syringe with either the air suction source or the atmosphere is disposed between the discharge solenoid valve and the accumulator on the air suction source side.
この液体定量吐出装置では、基本的には、制御部から出
力される吐出信号によって、吐出用電磁弁を作動させて
、エア供給源にて発生された加圧エアを、所要の液体を
充填したシリンジへ導いて、シリンジ内の液体を所定の
吐出位置に吐出させる一方、制御部からの吐出信号の出
力停止に基づく、吐出用電磁弁の元位置への復帰によっ
て、エア吸引源をシリンジに連通させて、シリンジ内の
液体に負圧力を作用させることにより、液体の定量吐出
が、自動的に、しかも、優れた液切れの下にて行われる
他、シリンジ内の液体の、自重による洩出は、そこに作
用する負圧力をもって、その自重を相殺することによっ
て確実に防止される。Basically, this liquid metering dispensing device operates a discharging solenoid valve in response to a discharging signal output from a control unit, and fills the required liquid with pressurized air generated by an air supply source. The air suction source is communicated with the syringe by guiding the liquid into the syringe and discharging the liquid in the syringe to a predetermined discharge position, while the discharge solenoid valve returns to its original position based on the stoppage of output of the discharge signal from the control unit. By applying negative pressure to the liquid in the syringe, a fixed amount of liquid can be dispensed automatically and with excellent liquid drainage, and the liquid in the syringe can be prevented from leaking due to its own weight. is reliably prevented by offsetting its own weight with negative pressure acting thereon.
このようにして、一の吐出位置での液体の定量吐出を終
了した後は、シリンジを次の吐出位置へ移動させ、そこ
にて前述したと同様の定量吐出を繰り返し行う。After the fixed amount of liquid has been ejected at one ejection position in this manner, the syringe is moved to the next ejection position, and the same fixed amount ejection as described above is repeated there.
なおここにおいて、シリンジ内の液体残量が減少したと
きには、その液体が、例えば、経時的粘度変化を無視し
得るものである場合には、シリンジ内空間の増加に起因
して、シリンジ内の液体の、一定圧力の下での一定時間
の加圧によっては、所定量の液体を正確に吐出すること
が不可能となる。Note that when the remaining amount of liquid in the syringe decreases, for example, if the viscosity change of the liquid over time can be ignored, the amount of liquid in the syringe decreases due to an increase in the space inside the syringe. By applying pressure for a certain period of time under a certain pressure, it becomes impossible to accurately discharge a predetermined amount of liquid.
そこでここでは、たとえば、予めの実験その他によって
求めた、シリンジ内液体残量と、定量吐出に必要なエア
圧力との相対関係に基づき、制御部から、たとえば電空
レギュレー夕にて構成することができる圧力調整用減圧
弁へ、所要のエア圧力への圧力設定信号を出力して、シ
リンジ内空間の増加分を、シリンジへ供給されるエア圧
力の増加によって補うことにより、仮りに、加圧エアの
供給時間が一定であっても、液体の定量吐出精度の十分
な向上をもたらす。Therefore, based on the relative relationship between the amount of liquid remaining in the syringe and the air pressure required for fixed-dose dispensing, which has been determined through preliminary experiments and other methods, the controller can configure, for example, an electro-pneumatic regulator. By outputting a pressure setting signal to the required air pressure to the pressure regulating valve that can be Even if the supply time is constant, the accuracy of dispensing a fixed amount of liquid can be sufficiently improved.
ここで、より好ましくは、液体の吐出量を、シリンジ内
液体残量と、エア圧力と、吐出時間との三者の関数とし
て求め、シリンジ内の液体残量を、シリンジへ供給され
るエア圧力の他、制御部から吐出用電磁弁へ出力される
吐出信号の出力時間によってもまた補うことにより、液
体の吐出量制御方法を多様化することができ、定量吐出
精度を一層高めることができる。Here, more preferably, the amount of liquid discharged is determined as a function of the remaining amount of liquid in the syringe, the air pressure, and the discharge time, and the remaining amount of liquid in the syringe is determined by the air pressure supplied to the syringe. In addition, by supplementing with the output time of the ejection signal output from the control unit to the ejection electromagnetic valve, it is possible to diversify the method of controlling the amount of liquid ejected, and further improve the accuracy of quantitative ejection.
同様に、シリンジ内の液体残量の変化は、そこに作用さ
せる適正負圧の変動をもたらし、液体に作用する負圧が
大きすぎる場合には、甚だしくはその液体の、空圧管路
への吸込みを生じ、逆に小さすぎる場合には、液体の洩
出を確実に阻止し得ないことから、ここでは、これも実
験その他によって予め求めた、シリンジ内液体残量と、
液体重量の相殺に必要な負圧度との相対関係に基づき、
制御部から吸引負圧用減圧弁、たとえば電空レギュレー
夕、シリンジ内液体残量に応じた真空度への圧力設定信
号を出力することによって、シリンジ内の液体への、常
に適正な負圧の作用を担保する。Similarly, changes in the amount of liquid remaining in the syringe will result in fluctuations in the appropriate negative pressure applied to it, and if the negative pressure applied to the liquid is too large, it may even cause the liquid to be sucked into the pneumatic line. On the other hand, if it is too small, it will not be possible to reliably prevent liquid leakage.
Based on the relative relationship with the degree of negative pressure required to offset the liquid weight,
By outputting a pressure setting signal from the control unit to a suction negative pressure reducing valve, such as an electropneumatic regulator, to set the degree of vacuum according to the amount of liquid remaining in the syringe, the appropriate negative pressure is always applied to the liquid in the syringe. guarantee.
ところで、吐出用電磁弁と、負圧系のアキュムレータと
の間に、シリンジを、エア吸引源もし《は大気のいずれ
か一方に選択的に連通させる吸引用電磁弁を配設した場
合には、とくには、シリンジ内の液体の、再度の定量吐
出に先立って、シリンジ内の負圧を、その吸引用電磁弁
によって大気に排出することにより、その後にシリンジ
へ供給される加圧エアによる、シリンジ内液体の加圧効
率を高めて、シリンジ内圧を、極めて迅速に所定値とす
ることができ、それ故に、定量吐出精度をより一層向上
させることができる。By the way, if a suction solenoid valve is disposed between the discharge solenoid valve and the negative pressure system accumulator to selectively communicate the syringe with either the air suction source or the atmosphere, In particular, the negative pressure inside the syringe is discharged to the atmosphere by the suction solenoid valve before discharging the liquid in the syringe in a fixed amount again, and then the syringe is activated by the pressurized air supplied to the syringe. By increasing the pressurizing efficiency of the internal liquid, the internal pressure of the syringe can be brought to a predetermined value extremely quickly, and therefore, the accuracy of quantitative dispensing can be further improved.
なお、上述したところでは、説明を簡単ならしめるべく
、シリンジ内の液体の残量だけが変化することとしてい
るが、それに加えて、液体の粘度も変化する場合には、
制御部からそれぞれの減圧弁へ出力される圧力設定信号
および、吐出用電磁弁への吐出信号出力時間のそれぞれ
を、粘度変化を伴う液体に対する実験その他によって、
経験的または理論的に求められた値に基づくものとする
ことが必要的である。In addition, in the above description, in order to simplify the explanation, it is assumed that only the remaining amount of liquid in the syringe changes, but in addition, if the viscosity of the liquid also changes,
The pressure setting signal output from the control unit to each pressure reducing valve and the discharge signal output time to the discharge solenoid valve were determined through experiments and other methods for liquids with viscosity changes.
It is necessary to base the value on an empirically or theoretically determined value.
以下にこの発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第１図は、この発明の一実施例を示す回路図であり、図
中実線は圧力回路を、破線は信号回路をそれぞれ示す。FIG. 1 is a circuit diagram showing an embodiment of the present invention, in which solid lines indicate a pressure circuit and broken lines indicate a signal circuit.
この例では、充填された液体を、所定の位置にて吐出す
るシリンジ１と、エア供給源２およびエア吸引源３とを
、吐出用電磁弁４を介して接続することにより、この吐
出用電磁弁４の作用の下で、加圧エアもしくは負圧−の
いずれか一方を、シリンジ内へ選択的に導入可能ならし
め、また、吐出用電磁弁４とエア供給源２との間には、
電磁弁側から順次に、アキュムレータ５および圧力調整
用減圧弁６のそれぞれを配設し、そして、その吐出用電
磁弁４とエア吸引源３との間には、電磁弁側から順次に
、吸引用電磁弁７、アキュムレータ８および吸引負圧用
減圧弁９のそれぞれを配設する。In this example, a syringe 1 that discharges the filled liquid at a predetermined position, an air supply source 2 and an air suction source 3 are connected via a discharge solenoid valve 4. Under the action of the valve 4, either pressurized air or negative pressure can be selectively introduced into the syringe, and between the discharge solenoid valve 4 and the air supply source 2,
An accumulator 5 and a pressure reducing valve 6 for pressure adjustment are arranged sequentially from the electromagnetic valve side, and a suction valve is arranged between the discharge electromagnetic valve 4 and the air suction source 3 sequentially from the electromagnetic valve side. A solenoid valve 7, an accumulator 8, and a pressure reducing valve 9 for suction negative pressure are provided.
ここで、吸引用電磁弁７は、シリンジ１、より直接的に
は吐出用電磁弁４を、エア吸引源３もしくは大気のいず
れか一方に選択的に連通させるべ《機能し、また、それ
ぞれのアキュムレータ５．８はいずれも、エア供給源２
もしくはエア吸引源３での圧力変動を吸収して、それよ
りシリンジ側の系内圧力を所定の一定値に維持すべく機
能し、さらに、ともに電空レギュレー夕にて構成するこ
とができる、圧力調整用減圧弁６および吸引負圧用減圧
弁９のそれぞれは、それよりシリンジ側の系内圧力を所
要に応じて変化させるべく機能する。Here, the suction solenoid valve 7 functions to selectively communicate the syringe 1, more directly the discharge solenoid valve 4, with either the air suction source 3 or the atmosphere. Both accumulators 5.8 are connected to air supply source 2.
Alternatively, it functions to absorb pressure fluctuations in the air suction source 3 and maintain the system pressure on the syringe side at a predetermined constant value, and furthermore, both can be configured with an electropneumatic regulator. Each of the adjustment pressure reducing valve 6 and the suction negative pressure reducing valve 9 functions to change the system pressure on the syringe side as required.
このように構成してなる圧力回路の、それぞれの電磁弁
４，７およびそれぞれの減圧弁６，９を、作動信号供給
源としての制御部１０に電気接続する。The respective electromagnetic valves 4 and 7 and the respective pressure reducing valves 6 and 9 of the pressure circuit configured in this manner are electrically connected to a control unit 10 as an actuation signal supply source.
制御部１０は、主制御部１１およびメモリー１２の他、
タイマー制御部１３を含んでおり、このタイマー制御部
１３は、吐出用電磁弁４へ、たとえばシリンジ１の所定
吐出位置への位置決めの終了に伴う外部信号に基づき、
予め定めて一定時間にわたって吐出信号を出力するとと
もに、吸引用電磁弁７へ、前記吐出信号の出力停止と同
時に、もしくはその出力停止に幾分先立って吸引信号を
出力する。The control unit 10 includes a main control unit 11 and a memory 12, as well as
The timer control unit 13 includes a timer control unit 13, and the timer control unit 13 controls the discharge solenoid valve 4 based on an external signal accompanying the completion of positioning of the syringe 1 to a predetermined discharge position, for example.
A discharge signal is output for a predetermined period of time, and a suction signal is output to the suction electromagnetic valve 7 at the same time as the output of the discharge signal is stopped, or somewhat prior to the stop of the output.
ところで、主制御部１１は、キーボード１４の操作によ
り、各チャンネルのメモリー上へ、シリンジ内の液体残
量の変化、液体の経時的粘度変化などの変動要素との関
連の下で、その変動に伴って変化する、適正な吐出圧力
および吸引負圧度、より好ましくは、これらに加えて適
正な吐出時間をも記憶させておくことによって、装置の
自動運転中の、上記変動に伴う主制御部１１への外部信
号の入力に基づき、それぞれの減圧弁６．９に、メモリ
ー１２から呼び出した適正圧力への圧力設定信号を出力
し、好適には、タイマー制御部１３へ、これもメモリー
１２から呼び出した適正吐出時間をもたらすべく、吐出
用電磁弁４への吐出信号の出力時間制御信号も出力する
。By the way, by operating the keyboard 14, the main control unit 11 stores information on the memory of each channel in relation to fluctuations such as changes in the amount of liquid remaining in the syringe and changes in the viscosity of the liquid over time. By storing the appropriate discharge pressure and suction negative pressure degree that change accordingly, and more preferably, the appropriate discharge time in addition to these, the main control unit can be easily adjusted during automatic operation of the device. Based on the input of an external signal to 11, a pressure setting signal to the appropriate pressure recalled from memory 12 is output to each pressure reducing valve 6.9, and preferably to timer control 13, also from memory 12. In order to bring about the called appropriate discharge time, an output time control signal of the discharge signal to the discharge solenoid valve 4 is also output.
このように構成してなる装置において、吐出用電磁弁４
は、タイマー制御部１３からの、一定時間にわたる、よ
り好ましくは、シリンジ内の、少なくとも液体残量に応
じた特定時間にわたる吐出信号の出力にもとづき、エア
供給源２とシリンジ１との連通をもたらし、このことに
より、圧力調整用減圧弁６は、主制御部Ｉ１からの圧力
設定信号によって設定された適正圧力を、前記吐出信号
が停止されるまでシリンジ１へ供給する。In the device configured in this way, the discharge solenoid valve 4
brings about communication between the air supply source 2 and the syringe 1 based on the output of an ejection signal from the timer control unit 13 over a certain period of time, more preferably over a certain period of time depending on at least the amount of liquid remaining in the syringe. As a result, the pressure regulating valve 6 supplies the appropriate pressure set by the pressure setting signal from the main control section I1 to the syringe 1 until the discharge signal is stopped.
ここで、圧力調整用減圧弁６の、適正圧力への設定、よ
り好ましくは、それに加えて、吐出用電磁弁４の適正吐
出時間の設定は、メモリー１２への記憶データを、シリ
ンジ内の液体残量の変化、シリンジ内の液体の粘度変化
などに伴って主制御部１１へ入力される外部信号に基づ
いて呼び出すことによって、自動的に行われるので、こ
の装置によれば、作業者のマニュアル操作を全く必要と
することなく、しかも、極めて迅速に、各種の変化に対
応することができ、それ故に、多数の所定吐出位置への
液体の順次の吐出に際し、所要の吐出量が、それぞれの
吐出位置の相互において等量である場合および等量でな
い場合のいずれにおいても、シリンジ内の液体残量の多
少、シリンジ内の液体粘度の高低のいかんに拘わらず、
各吐出位置に、所期通りの量の液体を、高い精度をもっ
て吐出することができる。Here, setting the pressure reducing valve 6 for pressure adjustment to an appropriate pressure, and more preferably, setting the appropriate discharge time of the discharge solenoid valve 4 is to store data stored in the memory 12 in order to store the liquid in the syringe. This is done automatically by calling based on external signals input to the main control unit 11 in response to changes in the remaining amount, changes in the viscosity of the liquid in the syringe, etc. According to this device, the operator's manual It is possible to respond to various changes extremely quickly without requiring any operations. Therefore, when dispensing liquid sequentially to a large number of predetermined dispensing positions, the required dispensing amount can be adjusted at each location. Regardless of the amount of liquid remaining in the syringe or the level of viscosity of the liquid in the syringe, regardless of whether the amounts are equal or not equal between the discharge positions,
A desired amount of liquid can be ejected to each ejection position with high accuracy.
ところで、タイマー制御部１３から吐出用電磁弁４への
吐出信号の出力が停止した場合には、その電磁弁４は、
シリンジ１を直ちに負圧系に連通させ、これによって、
その吐出信号の出力停止と同時に、もしくは、それに幾
分先行して、タイマー制御部ｌ３から吸引用電磁弁７へ
出力された吸引信号に基づく、その電磁弁７の吸引作動
の下で、シリンジ内へ迅速に負圧を導入する。By the way, when the output of the discharge signal from the timer control unit 13 to the discharge solenoid valve 4 stops, the solenoid valve 4
The syringe 1 is immediately connected to the negative pressure system, thereby
Simultaneously with the stoppage of the output of the ejection signal, or somewhat prior to that, the syringe is activated under the suction operation of the solenoid valve 7 based on the suction signal output from the timer control unit l3 to the suction solenoid valve 7. quickly introduce negative pressure to the
このようにしてシリンジ１へ供給される負圧の負圧度は
、これもまた、メモリー１２に予め記憶させたデータを
、主制御部１１への外部信号の入力に基づいて呼び出す
とともに、そのデータと対応する圧力設定信号を、主制
御部１１から吸引負圧用減圧弁９へ出力することによっ
て、自動的に、かつ時間遅れなしに特定することができ
、しかも、その値は、シリンジ内の液体の残量変化、液
体の経時的粘度変化などを考慮したものであることから
、シリンジ１へのその負圧の作用により、シリンジ内の
液体自重を、効果的に相殺することができる。The negative pressure degree of the negative pressure supplied to the syringe 1 in this way can also be determined by recalling data previously stored in the memory 12 based on the input of an external signal to the main control unit 11, and By outputting the corresponding pressure setting signal from the main control unit 11 to the suction negative pressure reducing valve 9, it can be specified automatically and without time delay, and the value can be determined based on the liquid in the syringe. Since the change in the remaining amount of the liquid and the change in the viscosity of the liquid over time are taken into consideration, the weight of the liquid in the syringe can be effectively offset by the effect of the negative pressure on the syringe 1.
従ってここでは、液体のーの定量吐出の終了後における
その液体の滴下はもちろん、シリンジの次の吐出位置へ
の移動中および装置の休止中における液体の洩出が、極
めて有効に防止されることになる。Therefore, in this case, it is possible to extremely effectively prevent not only dripping of the liquid after a fixed amount of liquid has been ejected, but also leakage of the liquid while the syringe is moving to the next ejection position and while the device is at rest. become.
以上のようにして一の定量吐出を終了した後、次の吐出
位置にて同様の定量吐出を再開するに当たっては、タイ
マー制御部１３から吐出用電磁弁４への吐出信号の出力
に先立って、そのタイマー制御部１３から吸引用電磁弁
７への吸引信号の出力を停止して、シリンジ内の負圧を
予め大気開放することにより、その後に続く、シリンジ
１への加圧エアの供給に際し、加圧効率を高めて、シリ
ンジ内圧を、迅速に所定値として、定量吐出精度をより
一層高めることができる。After completing one fixed-quantity dispensing as described above, in order to restart the same fixed-quantity dispensing at the next dispensing position, before outputting a dispensing signal from the timer control section 13 to the dispensing solenoid valve 4, By stopping the output of the suction signal from the timer control unit 13 to the suction solenoid valve 7 and releasing the negative pressure inside the syringe to the atmosphere in advance, during the subsequent supply of pressurized air to the syringe 1, By increasing the pressurization efficiency and quickly bringing the internal pressure of the syringe to a predetermined value, it is possible to further improve the accuracy of fixed-quantity dispensing.
以上この発明を図示例に基づいて説明したが、メモリー
からの記憶データの呼び出しを、外部信号の入力に代え
、キーボード入力に基づいて行うことも可能である。Although the present invention has been described above based on the illustrated examples, it is also possible to recall stored data from the memory based on keyboard input instead of inputting an external signal.
かくしてこの発明によれば、圧力調整用減圧弁および吸
引負圧用減圧弁の圧力設定を、シリンジ内の液体の残量
、液体粘度などに応じて制御部から出力される圧力設定
信号に基づいて行うことにより、マニュアル操作の必要
なしに、液体の残量、粘度などの変化に迅速かつ正確に
対応することができ、これがため、常に高精度の定量吐
出を行うことができるとともに、シリンジ内の液体の不
測の洩出を確実に防止することができる。Thus, according to the present invention, the pressure settings of the pressure regulating valve and the suction negative pressure reducing valve are performed based on the pressure setting signal output from the control unit in accordance with the remaining amount of liquid in the syringe, liquid viscosity, etc. This makes it possible to quickly and accurately respond to changes in the remaining amount of liquid, viscosity, etc., without the need for manual operation.This allows for highly accurate fixed-quantity dispensing at all times, and also allows the liquid in the syringe to be adjusted quickly and accurately. It is possible to reliably prevent accidental leakage of.
なお、液体の定量吐出精度は、吐出用電磁弁への吐出信
号の出力時間をもまた、シリンジ内の液体残量，液体粘
度などに応じて制御した場合に一層向上することになる
。Note that the accuracy of quantitatively dispensing the liquid will be further improved if the output time of the ejection signal to the ejection electromagnetic valve is also controlled according to the amount of liquid remaining in the syringe, the viscosity of the liquid, and the like.
さらに、負圧系に吸引用電磁弁を設け、この電磁弁によ
り、再度の定量吐出の開始に先立って、シリンジを大気
開放することにより、シリンジの加圧効率を高めて、定
量吐出精度をより一層向上させることができる。Furthermore, a suction solenoid valve is installed in the negative pressure system, and this solenoid valve releases the syringe to the atmosphere before starting metered dose dispensing again, increasing the pressurization efficiency of the syringe and improving the metered dispensing accuracy. This can be further improved.
第１図は、この発明の一実施例を示す回路図である。
■・・・シリンジ、 ２・・・エア供給源、３・・
・エア吸引源、 ４・・・吐出用電磁弁、５，８・・・
アキュムレータ、FIG. 1 is a circuit diagram showing an embodiment of the present invention. ■...Syringe, 2...Air supply source, 3...
・Air suction source, 4... Solenoid valve for discharge, 5, 8...
accumulator,
Claims (1)
に加圧エアを供給するエア供給源およびシリンジに負圧
を作用させるエア吸引源と、シリンジに、エア供給源も
しくはエア吸引源の一方を選択的に連通させる吐出用電
磁弁と、この吐出用電磁弁とエア供給源との間に、電磁
弁側から順次に配設したアキュムレータおよび圧力調整
用減圧弁と、吐出用電磁弁とエア吸引源との間に、電磁
弁側から順次に配設したアキュムレータおよび吸引負圧
用減圧弁と、前記吐出用電磁弁へ吐出信号を出力すると
ともに、圧力調整用減圧弁および吸引負圧用減圧弁のそ
れぞれに、シリンジ内の液体の、少なくとも残量に応じ
た圧力設定信号を出力する制御部とを具えてなる液体定
量吐出装置。 ２、充填された液体の吐出を行うシリンジと、シリンジ
に加圧エアを供給するエア供給源およびシリンジに負圧
を作用させるエア吸引源と、シリンジに、エア供給源も
しくはエア吸引源の一方を選択的に連通させる吐出用電
磁弁と、この吐出用電磁弁とエア供給源との間に、電磁
弁側から順次に配設したアキュムレータおよび圧力調整
用減圧弁と、吐出用電磁弁とエア吸引源との間に、電磁
弁側から順次に配設したアキュムレータおよび吸引負圧
用減圧弁と、前記吐出用電磁弁へ、シリンジ内の液体の
、少なくとも残量に応じた時間にわたって吐出信号を出
力するとともに、圧力調整用減圧弁および吸引負圧用減
圧弁のそれぞれに、シリンジ内の液体の、少なくとも残
量に応じた圧力設定信号を出力する制御部とを具えてな
る液体定量吐出装置。 ３、吐出用電磁弁と、エア吸引側のアキュムレータとの
間に、シリンジを、エア吸引源もしくは大気の一方に選
択的に連通させる吸引用電磁弁を配設してなる請求項１
もしくは２記載の液体定量吐出装置。[Claims] 1. A syringe that discharges the filled liquid, an air supply source that supplies pressurized air to the syringe, an air suction source that applies negative pressure to the syringe, and an air supply source or A discharge solenoid valve that selectively communicates one side of the air suction source, an accumulator and a pressure reducing valve that are arranged sequentially from the solenoid valve side between the discharge solenoid valve and the air supply source, and a discharge solenoid valve that selectively communicates with one side of the air suction source. An accumulator and a pressure reducing valve for suction negative pressure are arranged in order from the solenoid valve side between the solenoid valve and the air suction source, and a discharge signal is output to the solenoid valve for discharge, and a pressure reducing valve for pressure adjustment and a suction A liquid metering dispensing device comprising, for each of the negative pressure reducing valves, a control section that outputs a pressure setting signal corresponding to at least the remaining amount of liquid in the syringe. 2. A syringe that discharges the filled liquid, an air supply source that supplies pressurized air to the syringe, an air suction source that applies negative pressure to the syringe, and one of the air supply source or air suction source to the syringe. A discharge solenoid valve that selectively communicates with the discharge solenoid valve, an accumulator and a pressure reducing valve that are arranged in order from the solenoid valve side between the discharge solenoid valve and the air supply source, and the discharge solenoid valve and air suction. A discharge signal is output to an accumulator, a suction negative pressure reducing valve, and the discharge solenoid valve, which are arranged in sequence from the solenoid valve side between the syringe and the solenoid valve, over a period of time corresponding to at least the remaining amount of liquid in the syringe. The liquid metering and dispensing device further comprises a control unit that outputs a pressure setting signal corresponding to at least the remaining amount of the liquid in the syringe, to each of the pressure regulating valve and the suction negative pressure reducing valve. 3. Claim 1, wherein a suction solenoid valve is disposed between the discharge solenoid valve and the air suction side accumulator for selectively communicating the syringe with either the air suction source or the atmosphere.
Or the liquid metering discharge device according to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011759A JPH0829283B2 (en) | 1990-01-23 | 1990-01-23 | Liquid dispensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011759A JPH0829283B2 (en) | 1990-01-23 | 1990-01-23 | Liquid dispensing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03217271A true JPH03217271A (en) | 1991-09-25 |
| JPH0829283B2 JPH0829283B2 (en) | 1996-03-27 |
Family
ID=11786911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011759A Expired - Lifetime JPH0829283B2 (en) | 1990-01-23 | 1990-01-23 | Liquid dispensing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0829283B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004105968A (en) * | 2003-12-22 | 2004-04-08 | Musashi Eng Co Ltd | Liquid discharging device |
| KR100511352B1 (en) * | 2002-02-27 | 2005-08-31 | 엘지.필립스 엘시디 주식회사 | An apparatus for dispensing liquid crystal and a method of controlling liquid crystal dropping amount |
| WO2006022458A1 (en) | 2004-08-26 | 2006-03-02 | Musashi Engineering, Inc. | Device for discharging fixed quantity of liquid |
| JP2010012469A (en) * | 2009-10-21 | 2010-01-21 | Dainippon Screen Mfg Co Ltd | Pattern forming apparatus |
| JP2010158675A (en) * | 2009-01-09 | 2010-07-22 | Nordson Corp | Apparatus and method for pulsed dispensing of liquid |
| JP2010258002A (en) * | 2009-04-21 | 2010-11-11 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010258001A (en) * | 2009-04-21 | 2010-11-11 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010263098A (en) * | 2009-05-08 | 2010-11-18 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010263099A (en) * | 2009-05-08 | 2010-11-18 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010283113A (en) * | 2009-06-04 | 2010-12-16 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010279895A (en) * | 2009-06-04 | 2010-12-16 | Panasonic Corp | Paste applicator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772335A (en) * | 2016-05-10 | 2016-07-20 | 深圳市华星光电技术有限公司 | Frame sealing adhesive coating device and method |
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|---|---|---|---|---|
| JPS61114769A (en) * | 1984-11-09 | 1986-06-02 | Nissan Motor Co Ltd | Apparatus for emitting viscous material |
| JPS6397259A (en) * | 1986-10-14 | 1988-04-27 | Shinkawa Ltd | Paste discharger |
| JPH02122858A (en) * | 1988-10-31 | 1990-05-10 | Sharp Corp | Liquid material quantitative dispensing device |
-
1990
- 1990-01-23 JP JP2011759A patent/JPH0829283B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61114769A (en) * | 1984-11-09 | 1986-06-02 | Nissan Motor Co Ltd | Apparatus for emitting viscous material |
| JPS6397259A (en) * | 1986-10-14 | 1988-04-27 | Shinkawa Ltd | Paste discharger |
| JPH02122858A (en) * | 1988-10-31 | 1990-05-10 | Sharp Corp | Liquid material quantitative dispensing device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100511352B1 (en) * | 2002-02-27 | 2005-08-31 | 엘지.필립스 엘시디 주식회사 | An apparatus for dispensing liquid crystal and a method of controlling liquid crystal dropping amount |
| JP2004105968A (en) * | 2003-12-22 | 2004-04-08 | Musashi Eng Co Ltd | Liquid discharging device |
| WO2006022458A1 (en) | 2004-08-26 | 2006-03-02 | Musashi Engineering, Inc. | Device for discharging fixed quantity of liquid |
| US7527768B2 (en) | 2004-08-26 | 2009-05-05 | Musashi Engineering Inc. | Liquid dispenser with vacuum control |
| JP2010158675A (en) * | 2009-01-09 | 2010-07-22 | Nordson Corp | Apparatus and method for pulsed dispensing of liquid |
| JP2010258002A (en) * | 2009-04-21 | 2010-11-11 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010258001A (en) * | 2009-04-21 | 2010-11-11 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010263098A (en) * | 2009-05-08 | 2010-11-18 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010263099A (en) * | 2009-05-08 | 2010-11-18 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010283113A (en) * | 2009-06-04 | 2010-12-16 | Panasonic Corp | Paste coating apparatus, electronic component joining apparatus, paste coating method, and electronic component joining method |
| JP2010279895A (en) * | 2009-06-04 | 2010-12-16 | Panasonic Corp | Paste applicator |
| JP2010012469A (en) * | 2009-10-21 | 2010-01-21 | Dainippon Screen Mfg Co Ltd | Pattern forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0829283B2 (en) | 1996-03-27 |
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