JPH07308616A - Application device of viscous material - Google Patents

Application device of viscous material

Info

Publication number
JPH07308616A
JPH07308616A JP10295294A JP10295294A JPH07308616A JP H07308616 A JPH07308616 A JP H07308616A JP 10295294 A JP10295294 A JP 10295294A JP 10295294 A JP10295294 A JP 10295294A JP H07308616 A JPH07308616 A JP H07308616A
Authority
JP
Japan
Prior art keywords
viscous material
temperature
pump
shear rate
flow rate
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
Application number
JP10295294A
Other languages
Japanese (ja)
Other versions
JP2976169B2 (en
Inventor
Shinji Daimiyou
新治 大名
Yoshihiro Nakamura
嘉宏 中村
Hideki Takashima
秀喜 高嶋
Hirobumi Hara
博文 原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP6102952A priority Critical patent/JP2976169B2/en
Publication of JPH07308616A publication Critical patent/JPH07308616A/en
Application granted granted Critical
Publication of JP2976169B2 publication Critical patent/JP2976169B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To apply a viscous material accurately in a specific form of beads regardless of a temperature change. CONSTITUTION:An application device of a viscous material is equipped with an adjustment means 7 consisting of a tapered needle 70 which adjusts the shear speed of the viscous material by varying a flow path area in the upstream side of the nozzle hole 20a of an application head 2 and a drive source 72 for moving a tapered needle 70 back and forth. This adjustment means 7 is driven by detecting the temperature of the viscous material is such a manner that the shear speed is high at a low temperature and is low at a high temperature in accordance with the detected temperature. The temperature rise range of the viscous material due to its internal friction varies according to the shear speed. Thus it is possible to prevent a fault such as the collapse of beads caused by the deterioration of viscosity at a high temperature resulting from a fixed temperature level in the downstream side of the adjustment means 7.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は、接着剤やシーリング剤
等の粘度の高い粘性材料の塗布装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating device for a viscous material having a high viscosity such as an adhesive or a sealing agent.

【0002】[0002]

【従来の技術】従来、ロボット等に搭載される塗布ヘッ
ドにポンプによって粘性材料を供給し、塗布ヘッドに設
けたノズルのノズル孔から粘性材料を吐出させてワーク
に塗布するようにした塗布装置が知られている。かかる
塗布装置における吐出流量の制御方式としては、特開平
3−16675号公報に見られるように、回転速度に応
じた流量の粘性材料を供給する定容積形のポンプを用い
て、ポンプの回転速度により流量制御を行うポンプ制御
方式と、塗布ヘッドに圧力調整弁とその下流側の吐出圧
力を検出する圧力センサとを設けて、吐出圧力が設定流
量に対応する値になるように圧力センサの出力信号に基
いて圧力調整弁をフィードバック制御する圧力制御方式
とがある。ところで、粘性材料は温度変化によって粘度
が大きく変化し、吐出圧力が一定であっても粘度によっ
て粘性材料の吐出流量が変化するため、圧力制御方式の
ものにおいて、粘性材料の粘度を検出し、粘度の増加に
応じて圧力調整弁を開き側に駆動して吐出圧力を高め、
粘度増加による吐出流量の減少を補償するようにしたも
のも知られている(特開平5−293413号公報参
照)。
2. Description of the Related Art Conventionally, there is a coating apparatus which supplies a viscous material to a coating head mounted on a robot or the like by a pump and discharges the viscous material from a nozzle hole of a nozzle provided in the coating head to coat a work. Are known. As a method of controlling the discharge flow rate in such a coating apparatus, as disclosed in Japanese Patent Laid-Open No. 3-16675, a constant volume pump that supplies a viscous material at a flow rate according to the rotation speed is used, and the rotation speed of the pump is set. A pump control system that controls the flow rate by using a pressure control valve and a pressure sensor that detects the discharge pressure on the downstream side of the pressure adjustment valve are provided in the coating head, and the output of the pressure sensor is adjusted so that the discharge pressure reaches a value corresponding to the set flow rate. There is a pressure control system in which a pressure control valve is feedback-controlled based on a signal. By the way, the viscosity of a viscous material changes greatly due to temperature changes, and the discharge flow rate of the viscous material changes depending on the viscosity even if the discharge pressure is constant. Drive the pressure adjustment valve to the open side to increase the discharge pressure,
There is also known one in which a decrease in the discharge flow rate due to an increase in viscosity is compensated (see Japanese Patent Laid-Open No. 5-293413).

【0003】[0003]

【発明が解決しようとする課題】上記した圧力制御方式
のものは、塗布ヘッドのノズル外周に吐出圧力を検出す
る圧力センサを設ける必要があって、ワークの入り組ん
だ部位にノズルを臨ませる際に圧力センサがワークに干
渉し易く、入り組んだ部位に粘性材料を塗布することが
困難になる。これに対し、ポンプ制御方式ではノズルに
圧力センサを設ける必要がなく、且つ、粘度変化による
流量への影響が少なく、有利である。ところで、ワーク
に塗布された粘性材料のビートBは、通常、図4(a)
に示す如く、断面略長方形になるが、粘性材料の温度が
上昇して粘度が減少すると、図4(b)に示す如くへこ
みが大きくなって、所定の管理形状のビードBが得られ
なくなる。本発明は、以上の点に鑑み、ポンプ制御方式
を採用してワークの入り組んだ部位にも粘性材料を塗布
し得るようにし、更に、粘性材料の温度が変化してもビ
ード形状を一定に維持し得るようにした塗布装置を提供
することをその目的としている。
In the above-mentioned pressure control system, it is necessary to provide a pressure sensor for detecting the discharge pressure on the outer periphery of the nozzle of the coating head, and when the nozzle is exposed to a complicated part of the work. The pressure sensor easily interferes with the work, and it becomes difficult to apply the viscous material to the complicated portion. On the other hand, the pump control method is advantageous in that it is not necessary to provide a pressure sensor in the nozzle, and the change in viscosity has little effect on the flow rate. By the way, the beat B of the viscous material applied to the work is usually shown in FIG.
As shown in FIG. 4, the cross-section becomes a substantially rectangular shape, but when the temperature of the viscous material rises and the viscosity decreases, the dent becomes large as shown in FIG. 4B, and the bead B having a predetermined management shape cannot be obtained. In view of the above points, the present invention adopts a pump control system so that a viscous material can be applied to a complicated part of a work, and further, the bead shape is kept constant even if the temperature of the viscous material changes. It is an object of the present invention to provide a coating device that can be used.

【0004】[0004]

【課題を解決するための手段】上記目的を達成すべく、
本発明は、ポンプから塗布ヘッドに粘性材料を供給し、
塗布ヘッドに設けたノズルのノズル孔から粘性材料を吐
出させるようにした粘性材料の塗布装置であって、ポン
プを回転速度に応じた流量の粘性材料を供給する定容積
形ポンプで構成して、ポンプの回転速度により粘性材料
の流量を制御するものにおいて、塗布ヘッド内のノズル
孔より上流側の流路部分の流路面積を可変して粘性材料
のせん断速度を調整するせん断速度調整手段と、塗布ヘ
ッドに供給される粘性材料の温度を検出する温度検出手
段と、粘性材料の温度に応じてせん断速度調整手段を駆
動して粘性材料の粘度を調整する制御手段と、を備える
ことを特徴とする。この場合、粘性材料の流量の変更に
よるせん断速度の変動を生じないように、流量に応じて
せん断速度調整手段の駆動量を補正し、更には、粘性材
料の温度とせん断速度調整手段の駆動量とに応じてポン
プの回転速度を補正することが望ましい。
[Means for Solving the Problems] In order to achieve the above object,
The present invention supplies a viscous material to a coating head from a pump,
A viscous material coating device configured to discharge a viscous material from a nozzle hole of a nozzle provided in a coating head, wherein the pump is constituted by a constant volume pump that supplies a flow rate of the viscous material according to a rotation speed, In what controls the flow rate of the viscous material by the rotational speed of the pump, shear rate adjusting means for adjusting the shear rate of the viscous material by varying the flow path area of the flow path portion upstream of the nozzle hole in the coating head, A temperature detecting means for detecting the temperature of the viscous material supplied to the coating head; and a control means for driving the shear rate adjusting means according to the temperature of the viscous material to adjust the viscosity of the viscous material. To do. In this case, the drive amount of the shear rate adjusting means is corrected according to the flow rate so that the shear rate does not change due to the change of the flow rate of the viscous material, and the temperature of the viscous material and the drive amount of the shear rate adjusting means are corrected. It is desirable to correct the rotational speed of the pump according to

【0005】[0005]

【作用】口径dの流路に流量Qで流れる流体のせん断速
度Eは、 E=16/3・Q/πd3・105 … (1) で表わされる。塗布ヘッドに供給される粘性材料が低温
のときにはせん断速度調整手段により流路面積を狭めて
せん断速度を大きくし、粘性材料の内部摩擦による温度
上昇でせん断速度調整手段の下流側における材料温度が
適温になるようにする。そして、塗布ヘッドに供給され
る粘性材料の温度が上昇したときには流路面積を広げて
せん断速度を小さくする。これによれば、粘性材料の内
部摩擦による温度上昇が抑制されて、せん断速度調整手
段の下流側における材料温度が低温時と同様に適温に保
たれ、かくて塗布ヘッドへの粘性材料の供給温度が変化
してもノズル孔からの吐出温度、即ち、粘度はほぼ一定
となり、粘度低下でビードがへこむといった不具合は生
じない。また、粘性材料の流量が変更されたとき、その
ままではせん断速度が変化してノズル孔からの吐出温度
も変化するため、流量が増量されたときはせん断速度調
整手段により流路面積を拡大し、流量が減量されたとき
は流路面積を縮小して、せん断速度が一定に維持される
ようにする。また、粘性材料が低温で粘度が高くなった
り、せん断速度調整手段の駆動で流路面積が縮小される
と、ポンプの吐出負荷が増してポンプの内部リークによ
り流量が減少するため、粘性材料の温度が低くなったり
流路面積が縮小されたときはポンプの回転速度を上昇さ
せて、流量を一定に維持する。
The shear rate E of the fluid flowing at the flow rate Q in the passage having the diameter d is represented by E = 16/3 · Q / πd 3 · 10 5 (1) When the viscous material supplied to the coating head is at a low temperature, the shear rate adjusting means narrows the channel area to increase the shear rate, and the temperature rise due to internal friction of the viscous material causes the material temperature on the downstream side of the shear rate adjusting means to reach an appropriate temperature. Try to be. Then, when the temperature of the viscous material supplied to the coating head rises, the flow passage area is expanded to reduce the shear rate. According to this, the temperature rise due to internal friction of the viscous material is suppressed, and the material temperature on the downstream side of the shear rate adjusting means is maintained at an appropriate temperature as in the low temperature, and thus the supply temperature of the viscous material to the coating head. Even if the value changes, the discharge temperature from the nozzle hole, that is, the viscosity becomes almost constant, and the problem that the bead is dented due to the decrease in viscosity does not occur. Further, when the flow rate of the viscous material is changed, the shear rate changes as it is and the discharge temperature from the nozzle hole also changes, so when the flow rate is increased, the flow rate area is expanded by the shear rate adjusting means, When the flow rate is reduced, the flow channel area is reduced to keep the shear rate constant. When the viscosity of the viscous material becomes high at low temperature or when the flow passage area is reduced by driving the shear rate adjusting means, the discharge load of the pump increases and the flow rate decreases due to internal leakage of the pump. When the temperature becomes low or the flow passage area is reduced, the rotational speed of the pump is increased to keep the flow rate constant.

【0006】[0006]

【実施例】図1は自動車車体等のワークに粘性材料たる
シーリング剤を塗布する塗布装置の概要を示しており、
ロボット1の手首1a先端のツールホルダ1bに取付け
た塗布ヘッド2にタンク3からポンプ4を介してシーリ
ング剤を供給している。
EXAMPLE FIG. 1 shows an outline of a coating device for coating a sealing agent, which is a viscous material, on a work such as an automobile body.
A sealing agent is supplied from a tank 3 via a pump 4 to an application head 2 attached to a tool holder 1b at the tip of a wrist 1a of a robot 1.

【0007】ポンプ4はその回転速度に応じた流量のシ
ーリング剤を供給する定容積形のポンプ、例えば、ギア
ポンプで構成されており、ポンプ4の駆動モータ4aを
制御するコントローラ5にロボットコントローラ6から
塗布ヘッド2の現在位置や移動速度を表わすデータを伝
送し、ワークの各塗布部位や塗布ヘッド2の移動速度に
応じて予め設定されている、コントローラ5に記憶させ
た流量設定データから現時点で吐出すべきシーリング剤
の設定流量を検索し、コントローラ5によりポンプ4の
回転速度を制御して塗布ヘッド2に設定流量のシーリン
グ剤を供給するようにしている。尚、駆動モータ4aを
大容量のものとしておけば、ポンプ4の吐出負荷が増加
しても駆動モータ4aへの印加電圧に応じた一定速度で
ポンプ4を回転でき、そのため本実施例ではコントロー
ラ5により設定流量に応じた電圧を駆動モータ4aに印
加してポンプ4の回転速度を制御しているが、ポンプ4
の回転速度を検出してフィードバック制御を行うように
しても良い。
The pump 4 is composed of a constant-volume pump, for example, a gear pump, which supplies a sealing agent at a flow rate corresponding to the rotation speed of the pump 4, and a robot controller 6 controls a controller 5 for controlling a drive motor 4a of the pump 4. Data representing the current position and movement speed of the coating head 2 is transmitted, and discharge is performed at present from the flow rate setting data stored in the controller 5, which is preset according to each coating portion of the work and the movement speed of the coating head 2. The set flow rate of the sealing agent to be used is searched, and the controller 5 controls the rotation speed of the pump 4 to supply the coating head 2 with the set flow rate of the sealing agent. If the drive motor 4a has a large capacity, the pump 4 can be rotated at a constant speed according to the voltage applied to the drive motor 4a even if the discharge load of the pump 4 is increased. The voltage corresponding to the set flow rate is applied to the drive motor 4a to control the rotation speed of the pump 4.
The feedback control may be performed by detecting the rotation speed of the.

【0008】塗布ヘッド2は、図2に示す如く、先端に
ノズル20を取付けたヘッド本体21と、ヘッド本体2
1の基部側面に取付けたバルブブロック22とを備えて
おり、塗布ヘッド2をバルブブロック22において前記
ツールホルダ1bに取付けた。
As shown in FIG. 2, the coating head 2 includes a head body 21 having a nozzle 20 attached to its tip, and a head body 2
1 has a valve block 22 attached to the side surface of the base portion thereof, and the application head 2 is attached to the tool holder 1b at the valve block 22.

【0009】バルブブロック22には、シーリング剤の
流入ポート23と、該ポート23に連なるヘッド本体2
1内の弁孔24aを開閉する開閉弁24の弁杆24bに
連結される開閉シリンダ24cとが設けられており、開
閉弁24を開いたときに、流入ポート23からヘッド本
体21内の流路にシーリング剤が流れて、ノズル20の
先端のノズル孔20aからシーリング剤が吐出される。
The valve block 22 has a sealing agent inflow port 23 and a head body 2 connected to the port 23.
1 is provided with an opening / closing cylinder 24c connected to a valve rod 24b of the opening / closing valve 24 that opens / closes the valve hole 24a in the head 1. When the opening / closing valve 24 is opened, the flow path from the inflow port 23 to the inside of the head body 21 is provided. The sealing agent flows into the nozzle, and the sealing agent is discharged from the nozzle hole 20a at the tip of the nozzle 20.

【0010】ヘッド本体21には、ノズル孔20aより
上流側の流路部分の流路面積を可変してシーリング剤の
せん断速度を調整するせん断速度調整手段7が設けられ
ている。該調整手段7は、ノズル20に挿入可能なテー
パー付きのニードル70と、ヘッド本体21の尾端に取
付けた、ニードル70をこれに一体のロッド71を介し
て進退する駆動源72とで構成されている。駆動源72
としては、リニアモータや、ソレノイドや、ねじ機構を
介してニードル70を進退するモータ等を用いることが
できる。ニードル70を進退すると、ノズル20の流入
端20bの流路面積が変化し、流入端20bにおけるシ
ーリング剤のせん断速度が上記(1)式に従って変化す
る。ニードル70の前進端位置(図2に仮想線で示す位
置)では、ニードル25aの尾端の最大径部が流入端2
0bに挿入されて、流路面積がノズル孔20aの開口面
積よりより小さくなり、ニードル70の進退で流路面積
を広範囲に可変できる。図中25は前記弁杆24bやロ
ッド71の挿通箇所からの液洩れを防止すべく設けたV
パッキンである。
The head body 21 is provided with a shear rate adjusting means 7 for adjusting the shear rate of the sealing agent by varying the flow channel area of the flow channel portion upstream of the nozzle hole 20a. The adjusting means 7 is composed of a tapered needle 70 that can be inserted into the nozzle 20, and a drive source 72 that is attached to the tail end of the head main body 21 and that advances and retracts the needle 70 via an integral rod 71. ing. Drive source 72
For example, a linear motor, a solenoid, a motor that moves the needle 70 back and forth through a screw mechanism, or the like can be used. When the needle 70 advances and retracts, the flow passage area of the inflow end 20b of the nozzle 20 changes, and the shear rate of the sealing agent at the inflow end 20b changes according to the above equation (1). At the forward end position of the needle 70 (the position shown by the phantom line in FIG. 2), the maximum diameter portion of the tail end of the needle 25a is the inflow end 2
0b, the flow passage area becomes smaller than the opening area of the nozzle hole 20a, and the flow passage area can be varied over a wide range by advancing and retracting the needle 70. In the figure, reference numeral 25 is a V provided to prevent liquid leakage from the insertion portion of the valve rod 24b and the rod 71.
It is packing.

【0011】図3はシーリング剤(ペンギンシール15
93,サンスター技研株式会社製)のせん断速度に対す
る粘度の変化特性を示しており、図中a線はシーリング
剤の供給温度が20℃のときの変化特性、b線は供給温
度が30℃のときの変化特性、c線は供給温度が35℃
のときの変化特性である。せん断速度を増加すると、シ
ーリング剤の内部摩擦による温度上昇で粘度が低下し、
かくて粘度が一定になるようにせん断速度を調整すれ
ば、即ち、図3でVsが目標粘度であるとして、せん断
速度を供給温度が20℃,30℃,35℃のとき夫々図
3のEa,Eb,Ecになるように調整すれば、シーリ
ング剤の供給温度が変化してもノズル孔20aからの吐
出温度は一定になる。
FIG. 3 shows a sealing agent (penguin seal 15
93, manufactured by Sunstar Giken Co., Ltd.) shows the change characteristics of viscosity with respect to the shear rate. In the figure, the a line shows the change characteristics when the supply temperature of the sealing agent is 20 ° C., and the b line shows the change temperature of 30 ° C. Change characteristics, the supply temperature of c line is 35 ° C
It is a change characteristic when. When the shear rate is increased, the internal friction of the sealant increases the temperature and the viscosity decreases.
Thus, if the shear rate is adjusted so that the viscosity becomes constant, that is, assuming that Vs is the target viscosity in FIG. 3, the shear rate is Ea in FIG. 3 when the supply temperature is 20 ° C., 30 ° C., and 35 ° C., respectively. , Eb, Ec, the discharge temperature from the nozzle hole 20a becomes constant even if the supply temperature of the sealing agent changes.

【0012】そこで、本実施例では、前記コントローラ
5に粘度を目標値に維持するのに必要な各温度における
せん断速度の設定値をデータテーブルとして記憶させて
おき、塗布ヘッド2の上流側の配管系路に図1に示す如
く該ヘッド2に供給されるシーリング剤の温度を検出す
る温度センサ8を設けて、該センサ8の出力信号をコン
トローラ5に入力し、温度センサ7で検出されたシーリ
ング剤の供給温度に対応するせん断速度の設定値を検索
し、コントローラ5により前記駆動源72を制御してせ
ん断速度をこの設定値にすべくニードル70を進退調整
するようにした。
Therefore, in this embodiment, the controller 5 stores the set values of the shear rate at each temperature required to maintain the viscosity at the target value as a data table, and the piping on the upstream side of the coating head 2 is stored. As shown in FIG. 1, a temperature sensor 8 for detecting the temperature of the sealing agent supplied to the head 2 is provided in the system path, the output signal of the sensor 8 is input to the controller 5, and the sealing detected by the temperature sensor 7 is performed. The setting value of the shear rate corresponding to the supply temperature of the agent is searched, and the controller 5 controls the drive source 72 to adjust the needle 70 forward and backward so that the shear rate becomes the set value.

【0013】尚、せん断速度は上記(1)式の如く流量
によっても変化し、そこで現時点での供給温度に対応す
るせん断速度の設定値をEn、現時点の流量をQnとし
て、ノズル20の流入端20bの流路面積が、次式 d3=16/3・Qn/πEn・105 … (2) を満足する口径dに相当する面積になるようにニードル
70を進退調整するものとした。
The shear rate also changes depending on the flow rate as in the above equation (1), where the set value of the shear rate corresponding to the current supply temperature is En, and the current flow rate is Qn, and the inflow end of the nozzle 20. The needle 70 is adjusted forward and backward so that the flow passage area of 20b becomes an area corresponding to the diameter d satisfying the following equation: d 3 = 16/3 · Qn / πEn · 10 5 (2).

【0014】以上の構成によれば、シーリング剤の供給
温度が変化しても、また、流量が変化しても、ノズル孔
20aからシーリング剤が所望の一定温度で吐出され、
ワークに塗布されるシーリング剤のビードBを図4
(a)に示す所要の形状に維持できる。
According to the above construction, even if the supply temperature of the sealing agent changes or the flow rate changes, the sealing agent is discharged from the nozzle hole 20a at a desired constant temperature,
Figure 4 shows the bead B of the sealing agent applied to the work.
The desired shape shown in (a) can be maintained.

【0015】尚、ポンプ4の回転数が一定でも吐出負荷
が増すとポンプ4内でのリーク量が増して流量が減少す
る。ここで、吐出負荷はシーリング剤の温度変化による
粘度の変化やせん断速度調整手段7による流路面積の変
化によって変化するが、シーリング剤の温度は温度セン
サ8によって検出され、また、流路面積はコントローラ
5からの指令によって制御されるから、コントローラ5
において吐出負荷を知ることができる。そこで、本実施
例では、コントローラ5により吐出負荷に応じたポンプ
4の回転速度補正を行って、設定流量のシーリング剤を
塗布ヘッド2に供給し得るようにした。
Even if the rotational speed of the pump 4 is constant, if the discharge load increases, the amount of leak in the pump 4 increases and the flow rate decreases. Here, the discharge load changes due to a change in viscosity due to a change in temperature of the sealing agent and a change in channel area by the shear rate adjusting means 7, but the temperature of the sealing agent is detected by the temperature sensor 8 and the channel area is Since it is controlled by a command from the controller 5, the controller 5
The discharge load can be known at. Therefore, in this embodiment, the controller 5 corrects the rotation speed of the pump 4 according to the discharge load so that the sealing agent having a set flow rate can be supplied to the coating head 2.

【0016】以上、シーリング剤の塗布装置に本発明を
適用した実施例について説明したが、本発明は接着剤等
の他の粘性材料の塗布装置にも適用できる。
Although the embodiment in which the present invention is applied to the sealing agent applying device has been described above, the present invention can also be applied to another viscous material applying device such as an adhesive.

【0017】[0017]

【発明の効果】以上の説明から明らかなように、本発明
によれば、ノズル外周に圧力センサを取付ける必要がな
いため、ワークの入り組んだ部位にも粘性材料を塗布で
きると共に、粘性材料の供給温度が変化しても、ノズル
孔からの吐出温度を一定に維持して、粘性材料を所要の
ビード形状で正確に塗布できる。
As is apparent from the above description, according to the present invention, since it is not necessary to mount a pressure sensor on the outer circumference of the nozzle, the viscous material can be applied to the complicated part of the work and the viscous material can be supplied. Even if the temperature changes, the discharge temperature from the nozzle hole can be maintained constant, and the viscous material can be accurately applied in the required bead shape.

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

【図1】 本発明装置の一例を示す概略線図FIG. 1 is a schematic diagram showing an example of the device of the present invention.

【図2】 その塗布ヘッドの拡大截断面図FIG. 2 is an enlarged sectional view of the coating head.

【図3】 せん断速度に対する粘度の変化特性を示すグ
ラフ
FIG. 3 is a graph showing a change characteristic of viscosity with respect to shear rate.

【図4】 (a)正常なビード形状を示す図、(b)粘
度が低下したときのビード形状を示す図
4A is a diagram showing a normal bead shape, and FIG. 4B is a diagram showing a bead shape when the viscosity is lowered.

【符号の説明】[Explanation of symbols]

2 塗布ヘッド 20 ノズル 20a ノズル孔 4 ポンプ 5 コントローラ(制御手段) 7 せん断速度調整
手段 8 温度センサ(温度検出手段)
2 coating head 20 nozzle 20a nozzle hole 4 pump 5 controller (control means) 7 shear rate adjusting means 8 temperature sensor (temperature detecting means)

───────────────────────────────────────────────────── フロントページの続き (72)発明者 原 博文 埼玉県狭山市新狭山1丁目10番地1 ホン ダエンジニアリング株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hirofumi Hara 1-10-1 Shin-Sayama, Sayama-shi, Saitama Prefecture Honda Engineering Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ポンプから塗布ヘッドに粘性材料を供給
し、塗布ヘッドに設けたノズルのノズル孔から粘性材料
を吐出させるようにした粘性材料の塗布装置であって、
ポンプを回転速度に応じた流量の粘性材料を供給する定
容積形ポンプで構成して、ポンプの回転速度により粘性
材料の流量を制御するものにおいて、 塗布ヘッド内のノズル孔より上流側の流路部分の流路面
積を可変して粘性材料のせん断速度を調整するせん断速
度調整手段と、 塗布ヘッドに供給される粘性材料の温度を検出する温度
検出手段と、 粘性材料の温度に応じてせん断速度調整手段を駆動して
粘性材料の粘度を調整する制御手段と、 を備えることを特徴とする粘性材料の塗布装置。
1. A viscous material coating device in which a viscous material is supplied from a pump to a coating head, and the viscous material is discharged from a nozzle hole of a nozzle provided in the coating head.
When the pump is composed of a constant-volume pump that supplies a viscous material at a flow rate according to the rotation speed, and the flow rate of the viscous material is controlled by the rotation speed of the pump, the flow path on the upstream side of the nozzle hole in the coating head Shear rate adjusting means for adjusting the shear rate of the viscous material by changing the flow path area of the part, temperature detecting means for detecting the temperature of the viscous material supplied to the coating head, and shear rate according to the temperature of the viscous material A viscous material coating device comprising: a control means that drives an adjusting means to adjust the viscosity of the viscous material.
【請求項2】 前記制御手段は、粘性材料の流量の変更
によるせん断速度の変動を生じないように、流量に応じ
てせん断速度調整手段の駆動量を補正することを特徴と
する請求項1に記載の粘性材料の塗布装置。
2. The control means corrects the drive amount of the shear rate adjusting means according to the flow rate so that the shear rate does not change due to the change of the flow rate of the viscous material. Application device of the viscous material described.
【請求項3】 前記制御手段は粘性材料の温度とせん断
速度調整手段の駆動量とに応じてポンプの回転速度を補
正することを特徴とする請求項1又は2に記載の粘性材
料の塗布装置。
3. The viscous material coating device according to claim 1, wherein the control means corrects the rotational speed of the pump in accordance with the temperature of the viscous material and the drive amount of the shearing speed adjusting means. .
JP6102952A 1994-05-17 1994-05-17 Coating equipment for viscous materials Expired - Fee Related JP2976169B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6102952A JP2976169B2 (en) 1994-05-17 1994-05-17 Coating equipment for viscous materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6102952A JP2976169B2 (en) 1994-05-17 1994-05-17 Coating equipment for viscous materials

Publications (2)

Publication Number Publication Date
JPH07308616A true JPH07308616A (en) 1995-11-28
JP2976169B2 JP2976169B2 (en) 1999-11-10

Family

ID=14341154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6102952A Expired - Fee Related JP2976169B2 (en) 1994-05-17 1994-05-17 Coating equipment for viscous materials

Country Status (1)

Country Link
JP (1) JP2976169B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003040398A (en) * 2001-08-03 2003-02-13 Sanyo Electric Co Ltd Apparatus for sending out liquid
JP2011088138A (en) * 2009-09-25 2011-05-06 Sumitomo Heavy Ind Ltd Coater and coating controller
WO2021049436A1 (en) * 2019-09-12 2021-03-18 国立大学法人大阪大学 Coating apparatus and coating method
JP2021041357A (en) * 2019-09-12 2021-03-18 国立大学法人大阪大学 Coating device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003040398A (en) * 2001-08-03 2003-02-13 Sanyo Electric Co Ltd Apparatus for sending out liquid
JP2011088138A (en) * 2009-09-25 2011-05-06 Sumitomo Heavy Ind Ltd Coater and coating controller
WO2021049436A1 (en) * 2019-09-12 2021-03-18 国立大学法人大阪大学 Coating apparatus and coating method
JP2021041357A (en) * 2019-09-12 2021-03-18 国立大学法人大阪大学 Coating device
CN114401796A (en) * 2019-09-12 2022-04-26 国立大学法人大阪大学 Coating device and coating method

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