JPS632619Y2 - - Google Patents
Info
- Publication number
- JPS632619Y2 JPS632619Y2 JP1982095311U JP9531182U JPS632619Y2 JP S632619 Y2 JPS632619 Y2 JP S632619Y2 JP 1982095311 U JP1982095311 U JP 1982095311U JP 9531182 U JP9531182 U JP 9531182U JP S632619 Y2 JPS632619 Y2 JP S632619Y2
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- fluid pressure
- pressure
- discharge
- discharge gun
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 87
- 238000007599 discharging Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Confectionery (AREA)
Description
【考案の詳細な説明】
この考案はチヨコレート液、未加流ゴム液やグ
リスなどの高粘度流体を吐出ガンにより吐出させ
るようにした装置に関するもので、詳しくは吐出
ガンの始動時の異常吐出（大量流出）を阻止する
ことを目的とするものである。[Detailed description of the invention] This invention relates to a device for discharging high viscosity fluids such as tyokolate liquid, unwashed rubber liquid, and grease using a discharge gun. The purpose is to prevent mass leaks.
この種吐出装置をこの考案の一実施例を示す第
１図によつて説明すると、槽１に上述の高粘度流
体２が充填されており、これを周知の往復動流体
圧ポンプ３によつて可撓性のホース４を通つて吐
出ガン５に圧送され、該吐出ガン５より高粘度流
体を被加工物に所定の厚さに塗布させることにな
る。往復動流体圧ポンプ３は次の構造からなる。
即ちポンプケーシング６にピストン７が嵌装さ
れ、このピストン７を往復作動させるための空気
圧シリンダ等の流体圧シリンダ８がポンプケーシ
ング６と同軸に設けられ、この流体圧シリンダ８
は切換弁９を介して圧縮空気等の流体圧供給源１
０につながれている。一方吐出ガン５の構造は次
のとおりである。即ち吐出ノズル１２を開閉する
弁体１３がケーシング１１に嵌挿され、該弁体１
３を作動させるための空気圧シリンダ等の作動シ
リンダ部１４がケーシング１１と同軸に設けら
れ、この作動シリンダ部１４は切換弁１５を介し
て同じく圧縮空気等の流体圧供給源１６につなが
れている。 This type of discharge device will be explained with reference to FIG. 1 showing an embodiment of this invention.A tank 1 is filled with the above-mentioned high viscosity fluid 2, which is pumped by a well-known reciprocating fluid pressure pump 3. The fluid is fed under pressure to a discharge gun 5 through a flexible hose 4, and the discharge gun 5 applies a high viscosity fluid to a workpiece to a predetermined thickness. The reciprocating fluid pressure pump 3 has the following structure.
That is, a piston 7 is fitted into the pump casing 6, and a fluid pressure cylinder 8 such as a pneumatic cylinder for reciprocating the piston 7 is provided coaxially with the pump casing 6.
is a fluid pressure supply source 1 such as compressed air via a switching valve 9
It is connected to 0. On the other hand, the structure of the discharge gun 5 is as follows. That is, a valve body 13 that opens and closes the discharge nozzle 12 is fitted into the casing 11, and the valve body 1
An operating cylinder section 14 such as a pneumatic cylinder for operating the casing 11 is provided coaxially with the casing 11, and the operating cylinder section 14 is also connected to a fluid pressure supply source 16 such as compressed air via a switching valve 15.
往復動流体圧ポンプ３は流体圧供給源１０より
流体圧が流体圧シリンダ８に供給されている限
り、後述のように常時ポンプケーシング６内のピ
ストン７は往復駆動しており、該ピストン７が下
降することによつてケーシング６の下部室６ａの
流体をチエツク弁付流体路７ａを通つて上部室６
ｂに送り込まれ、またピストン７が上昇すること
によつて槽１内の流体をケーシング６に設けたチ
エツク弁付流路６ｃを通つてケーシング６の下部
室６ａに送り込むと共に上部室６ｂの流体はピス
トン７に押されて外部に送り出されホース４を通
つて吐出ガン５に圧送される。そして吐出ガン５
側では切換弁１５を操作して弁体１３を上動させ
ることによつて高粘度流体を吐出ノズル１２より
被加工物に向つて吐出させることになるが、この
吐出ガン５の始動時に、従来にあつては一度に大
量の流体が異常流出する難点があつた。これは高
粘度流体圧送時の特有の現象であり、低粘度流体
をホース等の配管により圧送する場合には該流体
に大きな配管抵抗を受けることがないが、高粘度
流体の場合には極めて大なる配管抵抗を受け、こ
れがためにポンプ側の吐出圧を非常に大きく取ら
なければ圧送することができない。たとえば吐出
ガンにおける吐出圧が10乃至15Kg／cm2程度必要と
する場合に、ポンプ側の吐出圧は約300Kg／cm2の
高吐出圧に維持しなければならない。この現象を
第２図ａによつて説明すると、ポンプ吐出口から
吐出ガン入口にかけて高粘度流体の流体圧はその
ポンプ吐出圧力に対してホース長さが長くなれば
これに共なつて流体圧P1が極端に低くなる。一
方吐出ガン５の吐出ノズル１２を閉鎖すれば、当
然にホース４内の高粘度流体の流動が停止する
が、しかし前述のように往復動流体圧ポンプは流
体圧供給源からの供給を停止しないかぎり、依然
として作動しており、これがためにホース４に対
して膨出圧力が負荷すると共に高圧のポンプ吐出
圧力P2がそのまま直接に吐出ガン入口圧力とな
ることは第２図ｂに示すとおりである。これがた
めに吐出ガン５を再起動させた場合に、高流体圧
の高粘度流体が一度に吐出ノズル１２より異常突
出する現象が生起する。 In the reciprocating fluid pressure pump 3, as long as fluid pressure is supplied to the fluid pressure cylinder 8 from the fluid pressure supply source 10, the piston 7 inside the pump casing 6 is always reciprocating as described below, and the piston 7 By descending, the fluid in the lower chamber 6a of the casing 6 is transferred to the upper chamber 6 through the fluid path 7a with a check valve.
b, and as the piston 7 rises, the fluid in the tank 1 is sent into the lower chamber 6a of the casing 6 through the check valve equipped passage 6c provided in the casing 6, and the fluid in the upper chamber 6b is It is pushed by the piston 7 and sent out to the outside, and is force-fed to the discharge gun 5 through the hose 4. and discharge gun 5
On the other hand, by operating the switching valve 15 and moving the valve body 13 upward, high viscosity fluid is discharged from the discharge nozzle 12 toward the workpiece. In this case, there was a problem in that a large amount of fluid abnormally leaked out at once. This is a phenomenon peculiar to the pumping of high-viscosity fluids; when a low-viscosity fluid is pumped through piping such as a hose, the fluid does not experience large piping resistance, but in the case of high-viscosity fluids, it is extremely large. Due to this piping resistance, pumping cannot be carried out unless the discharge pressure on the pump side is extremely high. For example, when the discharge gun requires a discharge pressure of about 10 to 15 Kg/cm 2 , the pump side discharge pressure must be maintained at a high discharge pressure of about 300 Kg/cm 2 . To explain this phenomenon with reference to Fig. 2a, the fluid pressure of high viscosity fluid from the pump discharge port to the discharge gun inlet increases as the hose length increases with respect to the pump discharge pressure. 1 becomes extremely low. On the other hand, if the discharge nozzle 12 of the discharge gun 5 is closed, the flow of the high viscosity fluid in the hose 4 will naturally stop, but as mentioned above, the reciprocating fluid pressure pump will not stop the supply from the fluid pressure supply source. As long as this is the case, it is still operating, and as a result, the expansion pressure is applied to the hose 4, and the high pump discharge pressure P2 directly becomes the discharge gun inlet pressure, as shown in Figure 2b. be. For this reason, when the discharge gun 5 is restarted, a phenomenon occurs in which high fluid pressure and high viscosity fluid abnormally protrudes from the discharge nozzle 12 all at once.
この高粘度流体の初期の異常突出現象は阻けら
れないものとされていたが、この考案はこれを簡
単な構成によつて一挙に解決することに成功した
もので、具体的には往復動流体圧ポンプ３を作動
させる流体圧シリンダ８の切換弁９とは別に該切
換弁と流体圧供給源１０との間に流体圧シリンダ
８からの流体圧を開放するための二方向切換電磁
弁などの圧抜き弁１７を介装してなるもので、更
にはこの圧抜き弁１７と吐出ガン５の操作用切換
弁１５との間に、第３図に示すように両者の電磁
弁に対する消励磁を同期して作動させるための電
気回路１８を設けるか、あるいは第４図に示すよ
うに第３図に示す上記回路に若干の遅延回路１９
を付加させたことを特徴とするものである。 This initial abnormal protrusion phenomenon of high viscosity fluid was thought to be unstoppable, but this invention succeeded in solving this problem all at once with a simple configuration. In addition to the switching valve 9 of the fluid pressure cylinder 8 that operates the fluid pressure pump 3, there is also a two-way switching solenoid valve for releasing the fluid pressure from the fluid pressure cylinder 8 between the switching valve and the fluid pressure supply source 10. A pressure relief valve 17 is interposed between the pressure relief valve 17 and the switching valve 15 for operating the discharge gun 5, as shown in FIG. Either an electric circuit 18 for synchronously operating the
It is characterized by the addition of.
即ち、第３図に示すよう切換弁１５の操作ボタ
ン１５ｂを開放して切換弁１５の電磁石１５ａを
消磁することによつて吐出ガン５の吐出ノズル１
２が弁体１３によつて閉塞されるが、これと同調
して圧抜き弁１７の電磁石１７ａも消磁される。
これがために第１図に示すように流体圧供給源１
０からの圧流体の供給が停止され、一方往復動流
体圧ポンプ３の流体圧シリンダ８内の流体圧は該
圧抜き弁１７によつて大気開放され、流体圧シリ
ンダ８内は無負荷状態になる。したがつて前記吐
出ガン５の閉塞に伴なつてホース４内に負荷する
流体の膨出圧力は、低圧または無負荷状態のポン
プケーシング内６ｂに吸収され、第２図ａに示す
ように従来例の流体圧P2に比べてポンプ吐出口
から吐出ガン入口に至る流体圧を低圧P3に維持
することができ、これがために吐出ガン５の再起
動時に吐出ノズル１２から一時的に大流量の高粘
度流体が突出することがない。 That is, as shown in FIG. 3, by opening the operation button 15b of the switching valve 15 and demagnetizing the electromagnet 15a of the switching valve 15, the discharge nozzle 1 of the discharge gun 5 is opened.
2 is closed by the valve body 13, and at the same time, the electromagnet 17a of the pressure relief valve 17 is also demagnetized.
For this purpose, as shown in FIG.
The supply of pressure fluid from 0 is stopped, and on the other hand, the fluid pressure in the fluid pressure cylinder 8 of the reciprocating fluid pressure pump 3 is released to the atmosphere by the pressure relief valve 17, and the inside of the fluid pressure cylinder 8 is in an unloaded state. Become. Therefore, the expansion pressure of the fluid loaded into the hose 4 due to the blockage of the discharge gun 5 is absorbed into the pump casing 6b which is in a low pressure or no-load state, and as shown in FIG. The fluid pressure from the pump discharge port to the discharge gun inlet can be maintained at a low pressure P3 compared to the fluid pressure P2 of High viscosity fluid does not protrude.
さらに吐出ガン５の停止時、その直後に再起動
する場合にはホース４内の流体圧が未だ充分に低
下していないため、再起動時に同時に圧抜き弁１
７に入力すれば、流体圧供給源１０からの流体圧
が往復動流体圧ポンプ３を介してホース４内部に
負荷し、矢張吐出ガン５から始動時に異常流出す
る恐れがあるが、これを防止するために第４図に
示すように、操作ボタン１５ｂをオンにして切換
弁１５の電磁石１５ａを励磁しても、同時に圧抜
き弁１７が切換わるのではなく、タイマーＴが作
動し、若干のタイムラグ（0.5〜１秒）の後に、
接点TRを閉塞し、圧抜き弁１７の電磁石１７ａ
を励磁して往復動流体圧ポンプ３を作動するよう
にしてある。これによつて、ホース４の流体圧、
特に吐出ガン入口の流体圧がポンプ側に吸収され
て異常流出しない程度の流体圧によつて吐出ノズ
ル１２より吐出されるため常態の初期吐出を期待
することができる。 Furthermore, when the discharge gun 5 is stopped and then restarted immediately thereafter, the fluid pressure in the hose 4 has not yet dropped sufficiently, so the pressure relief valve 1 must be closed at the same time as the restart.
If the input to the reciprocating fluid pressure pump 3 is input to the fluid pressure supply source 10, the fluid pressure will be applied to the inside of the hose 4 via the reciprocating fluid pressure pump 3, which may result in an abnormal outflow from the discharge gun 5 at the time of start-up. To prevent this, as shown in FIG. 4, even if the operation button 15b is turned on to excite the electromagnet 15a of the switching valve 15, the pressure relief valve 17 is not switched at the same time, but a timer T is operated and after a slight time lag (0.5 to 1 second),
The contact TR is closed, and the electromagnet 17a of the pressure relief valve 17 is
The reciprocating fluid pressure pump 3 is operated by exciting the reciprocating fluid pressure pump 3. As a result, the fluid pressure in the hose 4,
In particular, the fluid pressure at the inlet of the discharge gun is absorbed by the pump side and discharged from the discharge nozzle 12 with a fluid pressure that does not cause abnormal outflow, so that normal initial discharge can be expected.
なお、説明が前後になつたが、往復動流体圧ポ
ンプ３を作動させる流体圧シリンダ８と切換弁９
との連動構造としてこの考案に係る実施例におい
ては、切換弁９の弁杆を延長すると共に、前記流
体圧シリンダ８のピストンロツド８ａを中空に形
成してこの中空部８ｂに前記弁杆延長部９ａを嵌
合し、ピストン８ａが上動終端部附近に到すると
中空部底壁８ｃによつて弁杆延長部９ａ先端を上
方に押圧して切換弁９を切換え、この切換動作に
よつてピストン８ｄが下降し、その下動終端部附
近に到すると中空部上端壁８ｅに弁杆延長部先端
の膨頭部９ｂが係合して弁杆延長部９ａを下降さ
せて切換弁９を再度切換えるようになつており、
この切換弁９の往復切換によつて連杆２０に連動
されて往復動流体圧ポンプ３を連続して作動させ
るようになつている。なお図中２１は切換弁９の
切換位置を正確に保持するための係合手段であ
る。 Although the explanation has been delayed, the fluid pressure cylinder 8 and the switching valve 9 that operate the reciprocating fluid pressure pump 3
In the embodiment according to this invention, the valve rod of the switching valve 9 is extended, and the piston rod 8a of the fluid pressure cylinder 8 is formed hollow, so that the valve rod extension part 9a is formed in the hollow part 8b. When the piston 8a reaches the vicinity of the upper movement end, the hollow bottom wall 8c presses the tip of the valve rod extension 9a upward to switch the switching valve 9, and this switching action causes the piston 8d to switch. descends, and when it reaches the vicinity of the end of its downward movement, the expanded head 9b at the tip of the valve rod extension engages with the upper end wall 8e of the hollow portion, lowering the valve rod extension 9a and switching the switching valve 9 again. It has become
By reciprocating the switching valve 9, the reciprocating fluid pressure pump 3 is continuously operated in conjunction with the connecting rod 20. In the figure, reference numeral 21 denotes engagement means for accurately holding the switching position of the switching valve 9.
以上のようにこの考案によれば、往復動流体圧
ポンプを作動させる流体圧シリンダの切換弁とは
別に該切換弁と流体圧供給源との間に流体圧シリ
ンダからの流体圧を開放するための圧抜き弁を介
装するとともに、前記吐出ガンが停止している間
は前記圧抜き弁を作動させて前記流体圧シリンダ
からの流体圧を開放するようにしたので、吐出ガ
ンの停止時には高粘度流体の圧力が低下して吐出
ガンには高圧が加わることなく、吐出ガンを作動
させて再起動したときの流体の突出を防止するこ
とができる。さらに本考案では、前記吐出ガンを
作動するときには前記圧抜き弁をタイムラグを有
して切換えるようにしてなるので、流体の突出を
より効果的に防止できるとともに、吐出ガンを停
止させた後にすぐに再起動した場合においても、
吐出ガンからの流体の突出を防止することができ
る。したがつて、吐出ガンの作動と停止を繰り返
しても、吐出ガンから高粘度流体を異常吐出させ
ることなく、滑らかに吐出させることができるの
である。 As described above, according to this invention, in addition to the switching valve of the fluid pressure cylinder that operates the reciprocating fluid pressure pump, the fluid pressure from the fluid pressure cylinder is released between the switching valve and the fluid pressure supply source. In addition to interposing a pressure relief valve, the pressure relief valve is operated to release the fluid pressure from the fluid pressure cylinder while the discharge gun is stopped, so that when the discharge gun is stopped, high Since the pressure of the viscous fluid is reduced and high pressure is not applied to the discharge gun, it is possible to prevent the fluid from protruding when the discharge gun is operated and restarted. Furthermore, in the present invention, when the discharge gun is operated, the pressure relief valve is switched with a time lag, so that fluid protrusion can be more effectively prevented, and the pressure relief valve can be switched immediately after the discharge gun is stopped. Even if you reboot,
Fluid can be prevented from protruding from the discharge gun. Therefore, even if the discharge gun is repeatedly activated and stopped, the highly viscous fluid can be smoothly discharged from the discharge gun without abnormal discharge.
第１図はこの考案の一実施例を示す説明図、第
２図ａは高粘度流体の配管（ホース）内での流出
時の流体圧変化を示すグラフ、第２図ｂは従来例
とこの考案との配管（ホース）内での高粘度流体
の非流出時の流体圧を示すグラフ、第３図はこの
考案の一実施例の電気回路図、第４図はこの考案
の他の実施例の電気回路図である。
３……往復動流体圧ポンプ、４……圧送流路
（ホース）、５……吐出ガン、８……流体圧シリン
ダ、９……ポンプ側切換弁、１５……吐出ガン側
切換弁、１７……圧抜き弁、１８……同期回路、
１９……遅延回路。
Figure 1 is an explanatory diagram showing one embodiment of this invention, Figure 2a is a graph showing fluid pressure changes when high viscosity fluid flows out of a pipe (hose), and Figure 2b is a graph showing a conventional example and this example. A graph showing the fluid pressure when high viscosity fluid does not flow out in piping (hose) with the invention, Figure 3 is an electrical circuit diagram of one embodiment of this invention, and Figure 4 is another embodiment of this invention. FIG. 3... Reciprocating fluid pressure pump, 4... Pressure feeding channel (hose), 5... Discharge gun, 8... Fluid pressure cylinder, 9... Pump side switching valve, 15... Discharge gun side switching valve, 17 ...Pressure relief valve, 18...Synchronous circuit,
19...Delay circuit.
Claims (1)
流路を通つて吐出ガンより吐出させる流体吐出装
置において、往復動流体圧ポンプを作動させる流
体圧シリンダの切換弁とは別に該切換弁と流体圧
供給源との間に流体圧シリンダからの流体圧を開
放するための圧抜き弁を介装するとともに、前記
吐出ガンが停止している間は前記圧抜き弁を作動
させて前記流体圧シリンダからの流体圧を開放
し、前記吐出ガンを作動するときには前記圧抜き
弁をタイムラグを有して切換えるようにしてなる
高粘度流体吐出装置。 In a fluid discharge device that discharges high-viscosity fluid from a discharge gun through a pressure passage by a reciprocating fluid pressure pump, the switching valve and the fluid A pressure relief valve for releasing fluid pressure from the fluid pressure cylinder is interposed between the pressure supply source and the pressure relief valve is operated to release the fluid pressure from the fluid pressure cylinder while the discharge gun is stopped. A high viscosity fluid discharging device, wherein the pressure relief valve is switched with a time lag when the fluid pressure from the discharge gun is released and the discharge gun is operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9531182U JPS59576U (en) | 1982-06-24 | 1982-06-24 | High viscosity fluid discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9531182U JPS59576U (en) | 1982-06-24 | 1982-06-24 | High viscosity fluid discharge device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59576U JPS59576U (en) | 1984-01-05 |
| JPS632619Y2 true JPS632619Y2 (en) | 1988-01-22 |
Family
ID=30227673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9531182U Granted JPS59576U (en) | 1982-06-24 | 1982-06-24 | High viscosity fluid discharge device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009233523A (en) * | 2008-03-26 | 2009-10-15 | Toyota Auto Body Co Ltd | Viscous material suction device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5295904U (en) * | 1976-01-16 | 1977-07-18 |
-
1982
- 1982-06-24 JP JP9531182U patent/JPS59576U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009233523A (en) * | 2008-03-26 | 2009-10-15 | Toyota Auto Body Co Ltd | Viscous material suction device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59576U (en) | 1984-01-05 |
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