JPH0255654A - Method and instrument for detecting fire in die casting machine and injection forming machine - Google Patents
Method and instrument for detecting fire in die casting machine and injection forming machineInfo
- Publication number
- JPH0255654A JPH0255654A JP20793088A JP20793088A JPH0255654A JP H0255654 A JPH0255654 A JP H0255654A JP 20793088 A JP20793088 A JP 20793088A JP 20793088 A JP20793088 A JP 20793088A JP H0255654 A JPH0255654 A JP H0255654A
- Authority
- JP
- Japan
- Prior art keywords
- fire
- flame sensor
- air
- dust
- ultraviolet
- 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
- 238000004512 die casting Methods 0.000 title abstract description 8
- 238000000034 method Methods 0.000 title abstract 2
- 238000002347 injection Methods 0.000 title 1
- 239000007924 injection Substances 0.000 title 1
- 239000000428 dust Substances 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000010926 purge Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 12
- 238000000825 ultraviolet detection Methods 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 abstract description 14
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 239000006082 mold release agent Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、ダイカストマシンおよびプラスチックの射
出成形機における火災防止のための火炎検知装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flame detection device for fire prevention in die casting machines and plastic injection molding machines.
［従来の技術］
従来のダイカストマシンおよびプラスチックの射出成形
機の火災検出装置においては、火災検出センサとして測
温体が一般に用いられていた。[Prior Art] In conventional fire detection devices for die-casting machines and plastic injection molding machines, a temperature measuring body is generally used as a fire detection sensor.
例えば、ダイカストマシンにおいて、離型剤スプレーが
発火して火災を発生することがあり、その防止として高
感度の測温体を離型剤スプレーガンの近くに設置し、セ
ンサの検出により離型剤スプレーに連動し、該離型剤ス
プレーを停止し、警報を発するようにしていた。For example, in a die-casting machine, the mold release agent spray may ignite and cause a fire. To prevent this, a highly sensitive temperature sensor is installed near the mold release agent spray gun, and the sensor detects the mold release agent. In conjunction with the spray, the release agent spray was stopped and an alarm was issued.
［発明が解決しようとする課題］
しかしながら、火炎は前記スプレーガンの近くでは温度
が低いために発火直後の小火炎には効果的に作動しない
、また、センサは測温体であるので、必ずしも発火を検
出するものではなかった。[Problems to be Solved by the Invention] However, since the temperature of the flame is low near the spray gun, it does not work effectively against small flames that have just been ignited, and since the sensor is a temperature sensor, it does not necessarily prevent ignition. was not detected.
そこで、特開昭５７−４６４５７公報記載のような紫外
線に感応する素子を有する紫外線検出光電管を発火直後
の小火炎に感応する火炎センサとして用いることを考え
、この場合に、前述のダイカストマシンの離型剤スプレ
ーで代表されるように、火炎センサを配設された環境の
塵埃等により火炎センサの受光面およびその光学的視野
内が「くもりｊ等により紫外線の不透過状態になり、長
時間の使用に耐えられないという問題がある。また、こ
のことに対して容易に考λつく保護手段として標準ガラ
スやアクリル板等の遮弊板の付設があるが、これらは紫
外線不透過であるため採用できず火炎センサを露出しな
ければならない、また、紫外線を透過する遮弊板を用い
、ワイピング装置を付加したとしても「（もり」等は薄
膜となって残留し、不透過状態の発生から保護すること
は技術的に困難である。Therefore, we considered using an ultraviolet detection phototube having an element sensitive to ultraviolet light as described in Japanese Patent Application Laid-Open No. 57-46457 as a flame sensor that is sensitive to a small flame immediately after ignition. As typified by mold spray, the light-receiving surface of the flame sensor and its optical field of view may become cloudy due to dust in the environment in which the flame sensor is installed, making it opaque to ultraviolet rays and causing long-term damage. There is a problem that it cannot withstand use.In addition, as a protection measure that can be easily considered for this problem, it is possible to attach a shielding plate such as standard glass or acrylic plate, but these are not used because they do not transmit ultraviolet rays. In addition, even if a shielding plate that transmits ultraviolet rays is used and a wiping device is added, "fog" etc. will remain as a thin film and protect it from the occurrence of an opaque state. It is technically difficult to do so.
本発明は、以上のことを鑑み、紫外線検出光電管のよう
に発火直後の小火炎に感応する火炎センサの長所を生か
し、その配設された環境の塵埃等の発生により生じる紫
外線の不透過状態から火炎センサを保護するように形成
する射出成形機の火災検出方法およびその装置を提供す
ることを目的とする。In view of the above, the present invention utilizes the advantages of a flame sensor that is sensitive to small flames immediately after ignition, such as an ultraviolet detection phototube, and prevents ultraviolet rays from being transmitted due to the generation of dust in the environment in which the sensor is installed. It is an object of the present invention to provide a fire detection method and device for an injection molding machine in which a flame sensor is formed to protect it.
［課題を解決するための手段］
本発明は、上記課題を解決するための手段として、火炎
特有の紫外線を高感度で検出する紫外線検出光電管を火
炎センサとし、火災発生部を火炎センサの光学的視野内
に置くように配設して、前記火炎センサの光学系をその
配設された環境に発生する塵埃等により紫外線の不透過
状態になることから保護するため、強力なエヤーバージ
ノズルを設けた筒体と、該筒体の開口部に設けたシャッ
タ装置を具備して前記エヤーパージノズルとシャッタ装
置を連動するように構成したものとする。[Means for Solving the Problems] As a means for solving the above-mentioned problems, the present invention uses an ultraviolet detection phototube that detects ultraviolet light unique to flames with high sensitivity as a flame sensor, and detects the fire occurrence part using the optical sensor of the flame sensor. A strong air barge nozzle is provided to protect the optical system of the flame sensor from being impermeable to ultraviolet light due to dust, etc. generated in the environment in which the flame sensor is placed within the field of view. The air purge nozzle and the shutter device are configured to be provided with a cylindrical body and a shutter device provided at an opening of the cylindrical body.
［作 用］
従って、小さな火炎の紫外線を検出する高感度の火炎セ
ンサで発火直後の小さい火炎に作動し、またその光学系
を配設された環境１こ発生する塵埃等により紫外線の不
透過状態になることから保護する強力なエヤーバージノ
ズルから乾燥した清浄なエヤーを噴出し、前記火炎セン
サ装置の作動を停止するときは、シャッタ装置を閉じて
前記火炎センサの光学系を前記の塵埃等を発生する環境
から保護するように作用する。[Function] Therefore, a highly sensitive flame sensor that detects ultraviolet rays from a small flame is activated by a small flame immediately after ignition, and the environment in which the optical system is installed is in a state where the ultraviolet rays are not transmitted due to the generated dust, etc. When stopping the operation of the flame sensor device, a strong air barge nozzle blows out dry and clean air to protect the flame sensor optical system from dust. It acts to protect against the environment in which it occurs.
［実施例］
以下、本発明を実施例の図面に基づいて説明する。第１
図は本発明の実施例の構成を示す図面である。紫外線検
出光電管ｌを気密性函体２の側面にその受光面を露出し
て取付けている。ｌａは前記光電管ｌのリード電極のビ
ンで、前記函体２に取着したソケット３に挿入して前記
光電管ｌを取付けるようになっている。[Example] Hereinafter, the present invention will be described based on drawings of examples. 1st
The figure is a drawing showing the configuration of an embodiment of the present invention. An ultraviolet detection phototube 1 is attached to the side surface of an airtight box 2 with its light-receiving surface exposed. Reference numeral ``la'' denotes a lead electrode pin for the phototube 1, which is inserted into a socket 3 attached to the box 2 to attach the phototube 1.
４は駆動回路でＩＣを使用して小形化し、出力は出力回
路５から取出すことができる。4 is a drive circuit which is miniaturized using an IC, and the output can be taken out from an output circuit 5.
前記光電管ｌの光学系をその配線された環境に発生する
塵埃等により紫外線の不透過状態になることから保護す
る筒体６は前記函体２の側面に取着したフランジ８の環
状溝９の開口端１１に嵌着されており、細い隙間の環状
ノズルを形成したエヤーバージノズル７からエヤーを噴
出するようになっている。パージエヤー供給口ＩＯに供
給するエヤーは、空圧源１２からソレノイドバルブ１３
、乾燥した清浄なエヤーを供給する空気清浄装置１４を
経て供給される。前記空気清浄装置１４は、ミストセパ
レークとフィルターと減圧弁で構成されているが、不図
示のドライヤーを備えたものが望ましい。The cylindrical body 6 that protects the optical system of the phototube l from becoming impermeable to ultraviolet rays due to dust generated in the environment in which it is wired is located in the annular groove 9 of the flange 8 attached to the side surface of the box body 2. The air barge nozzle 7 is fitted into the opening end 11 and is configured to eject air from an annular nozzle with a narrow gap. The air supplied to the purge air supply port IO is supplied from the pneumatic source 12 to the solenoid valve 13.
, through an air cleaning device 14 that supplies dry, clean air. The air cleaning device 14 is composed of a mist separator, a filter, and a pressure reducing valve, but is preferably equipped with a dryer (not shown).
１５はシャッタ装置で前記筒体６の開口部３０に取着し
て、その開口部３０を開閉するようになっており、ガイ
ド１６を前記筒体６の端に固着し、可動板１７を摺動自
在としている。第３図はシャック装置１５の斜視図で前
記筒体６の開口部３０に取着するところを部分的に図示
している。A shutter device 15 is attached to the opening 30 of the cylindrical body 6 to open and close the opening 30. A guide 16 is fixed to the end of the cylindrical body 6 and the movable plate 17 is slid. It is free to move. FIG. 3 is a perspective view of the shack device 15, partially illustrating how it is attached to the opening 30 of the cylindrical body 6.
前記可動板１７はその摺動面に起毛シート１８を前記ガ
イド１６に接着し、塵埃の侵入を防止している。A brushed sheet 18 is adhered to the guide 16 on the sliding surface of the movable plate 17 to prevent dust from entering.
前記可動板１・７はリベット１９で、空圧シリンダ２１
のピストンロッド２０に固着されている。The movable plates 1 and 7 have rivets 19 and pneumatic cylinders 21.
It is fixed to the piston rod 20 of.
前記空圧シリンダ２１は前記ガイド１６に固定されたブ
ラケット２２に取付固定されている。The pneumatic cylinder 21 is attached and fixed to a bracket 22 fixed to the guide 16.
可動板１７を作動させるアクチュエータとしては空圧シ
リンダ２１に限定するものではなく、電動機でもよいし
、また、前記可動板は回動形の開閉機構としてもよい。The actuator for operating the movable plate 17 is not limited to the pneumatic cylinder 21, but may be an electric motor, or the movable plate may be a rotating opening/closing mechanism.
２３は制御装置でダイカストマシンの動作サイクルを指
令するが１例えば離型剤スプレーを指令した場合、同時
に前記ソレノイドバルブ１３のソレノイド１３ａを励磁
して前記エヤーバージノズル７から乾燥した清浄のエヤ
ーを噴出し、又前記空圧シリンダ２１を作動させて可動
板１７を下方に後退させ、シャッター装置１５を開（、
さらに出力回路５に設けたリレー接点２４を閉じること
により必要な時にだけ火災検出出力２５を得るようにな
っている。第１図中のＡは光学的視野内にある検出物体
を示している。23 is a control device that commands the operation cycle of the die-casting machine; 1. For example, when a release agent spray is commanded, the solenoid 13a of the solenoid valve 13 is simultaneously excited to blow out dry, clean air from the air barge nozzle 7. Then, the pneumatic cylinder 21 is operated to move the movable plate 17 downward and open the shutter device 15 (
Further, by closing a relay contact 24 provided in the output circuit 5, a fire detection output 25 is obtained only when necessary. A in FIG. 1 indicates a detection object within the optical field of view.
なお、前述のようにノズルから乾燥した清浄なエアーを
噴出する代りに、窒素ガスや加熱水蒸気のような他の気
体を噴出させることも当然考えられるし、さらに塵埃等
の帯電性を利用してｔｆＲ気的に集塵する装置を付設す
ることによって光学系を塵埃等から保護しても良いし、
また、シャッタ装置の代りに火炎センサ自身を可動にし
てダイカストマシンの動作サイクルの中で火災検出出力
を必要としない間はその環境から隔絶された収納室へ格
納することで火炎センサを塵埃等から保護することも考
えられ、また、清浄エアーの噴出およびシャッタ装置の
開閉などのタイミングの制御も本実施例に限定するもの
ではなく、これらの設計変更は本発明の精神を逸脱する
ものではない。It should be noted that instead of blowing out dry, clean air from the nozzle as mentioned above, it is of course possible to blow out other gases such as nitrogen gas or heated water vapor, and it is also possible to use the electrostatic properties of dust etc. The optical system may be protected from dust by attaching a tfR air dust collection device,
In addition, by making the flame sensor itself movable instead of the shutter device and storing it in a storage room isolated from the environment during the operating cycle of the die-casting machine when fire detection output is not required, the flame sensor is protected from dust. Furthermore, control of the timing of blowing out clean air and opening/closing the shutter device is not limited to this embodiment, and these design changes do not depart from the spirit of the present invention.
第２図は離型剤スプレー装置２６を固定金型２７と移動
金型２８の間に移動し離型剤スプレーを行っている状態
を示しており、紫外線検出光電管ｌの光学的視野２９を
適正に設定して火災発生部を監視するようにしている。FIG. 2 shows a state in which the mold release agent spray device 26 is moved between the fixed mold 27 and the movable mold 28 and sprays the mold release agent, and the optical field 29 of the ultraviolet detection phototube l is properly adjusted. It is set to monitor the area where the fire occurred.
複数の本考案の検出装置を他の火災発生部に配設するこ
とにより前記の離型剤スプレ一部に限定することな（機
械全体の火災発生個所を対象とすることができる。By arranging a plurality of detection devices of the present invention at other fire occurrence parts, the release agent spray can be applied to the fire occurrence parts of the entire machine, rather than being limited to only a part of the spray.
第４図はガスバーナの火炎（都市ガス）と太陽光及びタ
ングステン電灯の分光放射強度を光の波長を横軸にして
示したものである。FIG. 4 shows the spectral radiation intensities of a gas burner flame (city gas), sunlight, and a tungsten electric lamp, with the wavelength of the light on the horizontal axis.
火炎の紫外線領域Ｂを検出する能力のある波長２００〜
２６０ナノメータの範囲の感度を有する紫外線検出光電
管を使用することにより外部の他の光と区別して確実に
火炎を検出することができる。Wavelength 200 ~ capable of detecting flame ultraviolet region B
By using an ultraviolet detection phototube with a sensitivity in the range of 260 nanometers, the flame can be reliably detected, distinguishing it from other external light.
前記紫外線検出光電管ｌと、その駆動回路４については
、前述の特開昭５７−４６４５７公報記載により公知で
あるので詳細な説明を省略する。The ultraviolet light detection phototube 1 and its drive circuit 4 are well known from the above-mentioned Japanese Patent Laid-Open Publication No. 57-46457, so a detailed explanation will be omitted.
［発明の効果］
以上説明したように、火炎を確実に検出する紫外線検出
光電管を火炎センサとし、その光学系を配設された環境
の塵埃等の発生により紫外線の不透過状態になることか
ら完全に保護することにより動作を確実に補償すること
ができ発火直後の小火炎を検出し、大火災の発生防止の
信頼性に効果を奏する。[Effects of the Invention] As explained above, a flame sensor is an ultraviolet detection phototube that reliably detects flames, and the optical system is completely impervious to ultraviolet light due to the generation of dust in the environment where it is installed. By protecting the system, the operation can be reliably compensated, and small flames can be detected immediately after ignition, which is effective in increasing the reliability of preventing large fires.
第１図は本発明の実施例の構成図、第２図はダイカスト
マシンの離型剤スプレー状態の側面図、第３図はシャッ
タ装置の斜視図、第４図は分光放射強度と各種光の特性
図である。
ｌ・・・紫外線検出光電管、２・・・函体、６・・・筒
体。
７・・・エヤーバージノズル、１３・・・ソレノイドバ
ルブ、１４・・・空気清浄装置、１５・・・シャッタ装
置。
１７・・・可動板、２３・・・制御装置、２６・・・離
型剤スプレー装置。Fig. 1 is a configuration diagram of an embodiment of the present invention, Fig. 2 is a side view of a die-casting machine in a release agent spray state, Fig. 3 is a perspective view of a shutter device, and Fig. 4 is a diagram showing spectral radiation intensity and various types of light. It is a characteristic diagram. l...UV detection phototube, 2...box, 6...cylindrical body. 7... Air barge nozzle, 13... Solenoid valve, 14... Air cleaning device, 15... Shutter device. 17... Movable plate, 23... Control device, 26... Mold release agent spray device.
Claims (3)
、該火炎センサを函体に内設し、該函体の側面に露出し
た前記火炎センサの受光面と前記火炎センサの光学的視
野内を、その配設された環境の塵埃等の発生により紫外
線の不透過状態になることから保護するように形成する
ことを特徴とする射出成形機の火災検出方法。(1) A flame sensor having an element sensitive to ultraviolet rays is used, the flame sensor is installed inside a box, and the light-receiving surface of the flame sensor exposed on the side surface of the box and the optical field of view of the flame sensor are A fire detection method for an injection molding machine, characterized in that the injection molding machine is formed so as to be protected from becoming impermeable to ultraviolet rays due to the generation of dust or the like in the environment in which the machine is installed.
センサを内設した気密性函体と、該函体の側面に露出し
た前記火炎センサの受光面を保護するエアーパージノズ
ルを設けた筒体と、前記エアーパージノズルに清浄エア
ーを供給する空気清浄装置と、空気源に連通するソレノ
イドバルブと、前記清浄エアーの供給を作動する制御装
置とからなり、射出成形機の火災発生部を前記火炎セン
サの光学的視野内に置くように配設してなることを特徴
とする射出成形機の火災検出装置。(2) A flame sensor using an ultraviolet detection phototube, an airtight box housing the flame sensor, and a cylinder equipped with an air purge nozzle that protects the light-receiving surface of the flame sensor exposed on the side of the box. an air purifying device that supplies clean air to the air purge nozzle, a solenoid valve that communicates with the air source, and a control device that operates the supply of the clean air. A fire detection device for an injection molding machine, characterized in that the device is placed within the optical field of view of a flame sensor.
て、該筒体に装着したシャッタ装置と、前記清浄エアー
の供給動作と関連させて前記シャッタ装置を開閉する制
御装置とを備えたことを特徴とする特許請求の範囲第２
項記載の射出成形機の火災検出装置。(3) The cylindrical body provided with the air purge nozzle includes a shutter device attached to the cylindrical body, and a control device that opens and closes the shutter device in conjunction with the clean air supply operation. Claim No. 2
A fire detection device for an injection molding machine as described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63207930A JP2822041B2 (en) | 1988-08-22 | 1988-08-22 | Fire detection equipment for injection molding machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63207930A JP2822041B2 (en) | 1988-08-22 | 1988-08-22 | Fire detection equipment for injection molding machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0255654A true JPH0255654A (en) | 1990-02-26 |
| JP2822041B2 JP2822041B2 (en) | 1998-11-05 |
Family
ID=16547900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63207930A Expired - Lifetime JP2822041B2 (en) | 1988-08-22 | 1988-08-22 | Fire detection equipment for injection molding machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2822041B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003001399A (en) * | 2001-06-21 | 2003-01-07 | Sigumakkusu Kk | Die-casting machine supervisory system |
| JP2022079069A (en) * | 2020-11-16 | 2022-05-26 | リョービ株式会社 | Take-out hand device of die cast product, and operation method of take-out hand device of die cast product |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5746457A (en) * | 1980-09-04 | 1982-03-16 | Hamamatsu Tv Kk | Ultra-violet ray detector |
| JPS62178335U (en) * | 1986-05-01 | 1987-11-12 |
-
1988
- 1988-08-22 JP JP63207930A patent/JP2822041B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5746457A (en) * | 1980-09-04 | 1982-03-16 | Hamamatsu Tv Kk | Ultra-violet ray detector |
| JPS62178335U (en) * | 1986-05-01 | 1987-11-12 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003001399A (en) * | 2001-06-21 | 2003-01-07 | Sigumakkusu Kk | Die-casting machine supervisory system |
| JP2022079069A (en) * | 2020-11-16 | 2022-05-26 | リョービ株式会社 | Take-out hand device of die cast product, and operation method of take-out hand device of die cast product |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2822041B2 (en) | 1998-11-05 |
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