JPS62252690A - Safety device for laser beam machine - Google Patents
Safety device for laser beam machineInfo
- Publication number
- JPS62252690A JPS62252690A JP61094805A JP9480586A JPS62252690A JP S62252690 A JPS62252690 A JP S62252690A JP 61094805 A JP61094805 A JP 61094805A JP 9480586 A JP9480586 A JP 9480586A JP S62252690 A JPS62252690 A JP S62252690A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- safety
- processing machine
- laser processing
- alarm
- 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
- 238000012423 maintenance Methods 0.000 abstract description 16
- 230000007246 mechanism Effects 0.000 description 10
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Laser Beam Processing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はレーザ加工機用安全装置に関し、特に人体を高
出力レーザ光から保護するためのレーザ加工機用安全装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a safety device for a laser processing machine, and particularly to a safety device for a laser processing machine for protecting the human body from high-power laser light.
レーザの指向性を利用し、高出力の光ビームを集光して
加工を行うレーザ加工機から射出されるレーザ光は、高
出力エネルギーを有するため、人体に対する何らかの保
護を行い、作業者の安全を確保しなければならない。Laser beams emitted from laser processing machines that use the directivity of lasers to condense and process high-output light beams have high output energy, so some form of protection for the human body is required to ensure the safety of workers. must be ensured.
従来一般に用いられているレーザ加工機用安全装置は、
インターロック・機構を備えたものである。Conventionally commonly used safety devices for laser processing machines are:
It is equipped with an interlock mechanism.
すなわち、レーザ加工機の周囲に設けられた安全カバー
を開いた状態でレーザ加工機を動作させようとすると、
レーザ加工機のレーザ光射出部に設けられたシャッタが
自動的に閉じられレーザ光が射出しないような機構を設
け、作業者に対するレーザ光射出事故を防ぐものである
。In other words, if you try to operate the laser processing machine with the safety cover installed around it open,
A mechanism is provided in which a shutter provided in a laser beam emitting section of a laser processing machine is automatically closed and no laser beam is emitted, thereby preventing laser beam emitting accidents to workers.
また、レーザ加工機に対して商用電源の供給を行ってい
る最中は、常に警報を発するような機構をさらに備えた
安全装置も従来用いられている。Additionally, safety devices have been conventionally used that further include a mechanism that always issues an alarm while commercial power is being supplied to the laser processing machine.
これは例えばレーザ加工機に電源を投入すると同時に、
警報ランプを点灯させ、作業者に注意を促すようにする
ものである。For example, at the same time as turning on the power to a laser processing machine,
This lights up a warning lamp to alert workers.
従来のインターロック機構を備えた安全装置は、レーザ
加工機を用いて通常の作業を行っている場合には問題な
いが、レーザ加工機の保守を行う場合に十分な安全確保
が図れないという問題がある。Conventional safety devices with interlock mechanisms do not pose a problem when performing normal work using a laser processing machine, but the problem is that they do not ensure sufficient safety when maintaining the laser processing machine. There is.
保守員がレーザ加工機の点検、調整、修理等の保守作業
を行う場合、安全カバー自体を取りはずしたりする等、
インターロック機構を解除せざるを得ない事態が生ずる
。このような場合、レーザ光が射出する可能性があって
も保守員に対する保護は一切図られない状態となる。When maintenance personnel perform maintenance work such as inspection, adjustment, and repair of laser processing machines, they must remove the safety cover itself, etc.
A situation arises in which the interlock mechanism must be released. In such a case, even if there is a possibility that laser light may be emitted, the maintenance personnel will not be protected at all.
一方、警報を発するような機構をさらに備えた安全装置
は、通常作業時も保守作業時も、レーザ加工機に対する
電源投入が行われていさえすれば警報が発せられるので
、保守員はレーザ光が射出する可能性がある場合には、
これを常に警報によって確認することができる。On the other hand, a safety device that is additionally equipped with a mechanism to issue an alarm will issue an alarm as long as the power is turned on to the laser processing machine, both during normal work and during maintenance work, so maintenance personnel can If there is a possibility of ejection,
This can always be confirmed by an alarm.
ところが、インターロック機構が正常に機能している場
合であっても、常に警報ランプの点灯等の警報が発せら
れるため、保守員か警報に慣れてしまい、警報が十分効
果を発揮しな（なるという問題がある。すなわち、イン
ターロック機構が正常に機能していれば、安全カバーを
開いた状態で作業している限りはレーザ光の射出可能性
は無いのにもかかわらず、警報ランプは点灯した状態と
なる。このため、保守員は警報ランプの点灯状態に慣れ
てしまい、インターロック機構を解除したときも点灯し
た警報ランプに注意を払わなくなり、十分な安全確保が
図れなくなるのである。However, even when the interlock mechanism is functioning normally, warnings such as warning lamps are always emitted, so maintenance personnel tend to get used to the warnings and the warnings are not as effective. In other words, if the interlock mechanism is functioning properly, the warning lamp will light up even though there is no possibility of laser light being emitted as long as the safety cover is open. As a result, maintenance personnel become accustomed to the lit state of the warning lamp and do not pay attention to the lit warning lamp even when the interlock mechanism is released, making it impossible to ensure sufficient safety.
そこで、本発明は保守員に対しても十分な安全確保を図
ることができるレーザ加工機用安全装置を提供すること
を目的とする。Therefore, an object of the present invention is to provide a safety device for a laser processing machine that can ensure sufficient safety even for maintenance personnel.
本発明はレーザ加工機用安全装置を、レーザ加工機のレ
ーザ光射出部に設けたシャッタと、レーザ加工機の周囲
に設けた安全カバーと、この安全カバーを開いてレーザ
加工機の動作を行ったときにシャッタを閉じてレーザ光
を遮蔽するインターロック装置と、このインターロック
装置を解除してレーザ加工機の動作を行ったときに警報
を発する警報装置とによって構成し、保守員に対しても
十分な安全確保が図れるようにしたものである。The present invention provides a safety device for a laser processing machine that includes a shutter provided at the laser beam emitting part of the laser processing machine, a safety cover provided around the laser processing machine, and a safety device that operates the laser processing machine when the safety cover is opened. It consists of an interlock device that closes the shutter and blocks the laser beam when the laser processing machine is activated, and an alarm device that issues an alarm when the interlock device is released and the laser processing machine is operated. The design also ensures sufficient safety.
以下、本発明を図示する実施例に基づいて説明する。 The present invention will be described below based on illustrated embodiments.
第１図は本発明に係わるレーザ加工機用安全装置の一実
施例の回路図である。ここで一点鎖線で囲ったブロック
Ａはレーザ加工機の電源部内に、ブロックＢはレーザ加
工機本体内に、それぞれ設けられる回路ブロックである
ことを示す。本回路は大きく分けて、シャッタ回路１０
、安全カバー回路２０、警報回路３０、およびレーザ電
源回路４００４つの部分から成る。FIG. 1 is a circuit diagram of an embodiment of a safety device for a laser processing machine according to the present invention. Here, block A surrounded by a dashed line indicates a circuit block provided within the power supply section of the laser processing machine, and block B is provided within the main body of the laser processing machine. This circuit is roughly divided into shutter circuit 10
, safety cover circuit 20, alarm circuit 30, and laser power supply circuit 400.
シャッタ回路ｌＯは、シャッタ用コイル１１、直流電源
１２、およびメーク接点１３．１４を環状に直列接続し
て成り、メータ接点１３．１４の両方が閉じられると閉
回路が形成され、シャッタ用コイル１１がレーザ加工機
のレーザ光射出部に設けられたシャッタを開く機能を有
する。すなわち、シャッタは通常は閉じられており、メ
ーク接点１３．１４の両方が閉じられたときに開き、レ
ーザ光が射出する。The shutter circuit IO is composed of a shutter coil 11, a DC power source 12, and a make contact 13.14 connected in series in an annular manner. When both meter contacts 13.14 are closed, a closed circuit is formed, and the shutter coil 11 has the function of opening the shutter provided at the laser beam emitting part of the laser processing machine. That is, the shutter is normally closed and opens when both make contacts 13, 14 are closed, and laser light is emitted.
安全カバー回路２０は、直流電源２１、リレー２２、お
よびメーク接点２３を環状に直列接続して成り、メーク
接点２３が閉じられるとリレー２２が付勢され、このリ
レー２２はメータ接点１４を閉じる動作をする。なお、
この回路図中、リレー等に基づく接点の動作系統を破線
で示すことにする。安全カバー回路２０のもう１つの構
成要素となる安全カバー開閉検出スイッチ２４は、安全
カバー〇伏態を検出し、安全カバーが閉じられている場
合だけメーク接点２３を閉じる。The safety cover circuit 20 is composed of a DC power supply 21, a relay 22, and a make contact 23 connected in series in a ring shape. When the make contact 23 is closed, the relay 22 is energized, and this relay 22 operates to close the meter contact 14. do. In addition,
In this circuit diagram, the operating system of contacts based on relays and the like is shown by broken lines. A safety cover opening/closing detection switch 24, which is another component of the safety cover circuit 20, detects whether the safety cover is in the down position and closes the make contact 23 only when the safety cover is closed.
警報回路３０は、直流電源３１．警報ランプ３２、ブレ
ーク接点３３、およびメータ接点３４．３５を環状に直
列接続して成り、全接点が閉じられると閉回路が形成さ
れ、警報ランプ２３が点灯する。安全カバー開閉検出ス
イッチ２４は、安全カバーが閉じられている場合だけメ
ータ接点３４を閉じ、ブレーク接点３３を開く。The alarm circuit 30 includes a DC power source 31. It consists of an alarm lamp 32, a break contact 33, and a meter contact 34, 35 connected in series in a ring shape, and when all the contacts are closed, a closed circuit is formed and the alarm lamp 23 is lit. The safety cover open/close detection switch 24 closes the meter contact 34 and opens the break contact 33 only when the safety cover is closed.
レーザ電源回路４０はミレーヂ用電源４１、電源投入ス
イッチ４２、およびリレー４３から成り、電源投入スイ
ッチ４２を閉じることによりレーザ加工機（図示されて
いない）に電源を供給する。The laser power supply circuit 40 includes a millage power supply 41, a power supply switch 42, and a relay 43, and supplies power to a laser processing machine (not shown) by closing the power supply switch 42.
この電源供給が行われている間は、リレー４３が付勢さ
れ、メーク接点１３．３５が閉じられる。While this power is being supplied, relay 43 is energized and make contact 13.35 is closed.
続いてこの装置の動作を各状態に応じて説明する。Next, the operation of this device will be explained according to each state.
（１）安全カバーを閉じた作業時
電源を投入すると、レーザ加工機が動作するとともに、
リレー４３の働きによりメータ接点１３．３５が閉じら
れる。また、検出スイッチ２４は安全カバーが閉じられ
ているのを検出し、メータ接点２３．３４を閉じるとと
もにブレーク接点３３を開く。(1) When working with the safety cover closed, when the power is turned on, the laser processing machine will operate and
The action of relay 43 closes meter contact 13.35. The detection switch 24 also detects that the safety cover is closed and closes the meter contact 23.34 and opens the break contact 33.
メータ接点２３が閉じられるとリレー２２が付勢し、メ
ータ接点１４が閉じられる。これによりシャッタ回路１
０は閉回路を形成し、シャッタが開き、レーザ光が射出
することになる。一方、警報回路３０は、ブレーク接点
３３が開いているため閉回路を形成せず、警報ランプ３
２は点灯しない。When meter contact 23 is closed, relay 22 is energized and meter contact 14 is closed. As a result, shutter circuit 1
0 forms a closed circuit, the shutter opens, and laser light is emitted. On the other hand, the alarm circuit 30 does not form a closed circuit because the break contact 33 is open, and the alarm lamp 3
2 does not light up.
（２）安全カバーを開いた作業時
電源を投入すると、レーザ加工機が動作するとともに、
リレー４３の働きによりメータ接点１３．３５が閉じる
。また、検出スイッチ２４は安全カバーが開いているの
を検出するので、メータ接点２３．３４は開いたままと
なる。従ってリレー２２は付勢されず、メータ接点１４
は開いたままとなる。(2) When working with the safety cover open, when the power is turned on, the laser processing machine will operate and
The action of relay 43 closes meter contact 13.35. The detection switch 24 also detects that the safety cover is open, so the meter contacts 23.34 remain open. Therefore, relay 22 is not energized and meter contact 14
remains open.
このためシャッタ回路１０は閉回路を形成せず、シャッ
タは閉じたままレーザ光を遮蔽することになる。一方警
報回路３０は、メータ接点３４が開いているため閉回路
を形成せず、警報ランプ３２は点灯しない。Therefore, the shutter circuit 10 does not form a closed circuit, and the shutter remains closed to block the laser beam. On the other hand, the alarm circuit 30 does not form a closed circuit because the meter contact 34 is open, and the alarm lamp 32 does not light up.
（３）保守時
いま、例えば安全カバーを取りはずしてレーザ加工機の
調整作業を行う場合を考える。このとき、検出スイッチ
２４はもはや動作しないので、通常の状態ではメータ接
点２３．３４が開いたままとなり、前述の（２）の場合
と同様にシャッタは閉じたままレーザ光を遮蔽すること
になる。(3) At the time of maintenance Let us now consider, for example, the case where the safety cover is removed and the laser processing machine is adjusted. At this time, the detection switch 24 no longer operates, so under normal conditions, the meter contacts 23, 34 remain open, and the shutter remains closed, blocking the laser beam, as in the case (2) above. .
ところが、レーザ光を実際に射出させながら調整を行う
ような場合は、シャッタを開くためにメータ接点２３．
３４を強制的に閉じる操作を行い、インターロックを解
除することになる。However, when adjusting the laser beam while actually emitting it, the meter contact 23. is used to open the shutter.
34 will be forcibly closed and the interlock will be released.
この状態で電源投入を行うと、シャッタ回路１０が閉回
路を形成し、レーザ光は射出可能な状態となるが、この
ときブレーク接点３３は閉じたままであるから、警報回
路３０も閉回路を形成し、警報ランプ３２が点灯する。When the power is turned on in this state, the shutter circuit 10 forms a closed circuit and the laser beam can be emitted, but since the break contact 33 remains closed at this time, the alarm circuit 30 also forms a closed circuit. Then, the alarm lamp 32 lights up.
従って保守員はこの警報ランプ３２の点灯によって、レ
ーザ光の射出に注意を向けることができる。Therefore, by lighting the warning lamp 32, the maintenance personnel can pay attention to the emission of the laser beam.
以上のように本安全装置では、通常作業時にはインター
ロックが働き、安全カバーが開いている状態となり、ま
た、保守時にインターロックを解除すると警報ランプが
点灯して保守員に注意を促すことができる。しかも警報
ランプの点灯はインターロック解除時に限られるため、
保守員が警報ランプの点灯状態に慣れることを避けるこ
とができ、十分な安全確保を図ることができる。As described above, with this safety device, the interlock operates during normal work and the safety cover is open, and when the interlock is released during maintenance, a warning lamp lights up to alert maintenance personnel. . Moreover, the warning lamp only lights up when the interlock is released.
It is possible to prevent maintenance personnel from becoming accustomed to the lighting state of the warning lamp, and sufficient safety can be ensured.
なお、上述の回路は本発明の一実施例として示したもの
であり、本発明はこの回路構成に限定されるものではな
い。また、警報手段として上述の実施例では警報ランプ
を用いたが、この他警報音を発するような装置を用いて
もよい。Note that the above-described circuit is shown as one embodiment of the present invention, and the present invention is not limited to this circuit configuration. Further, although an alarm lamp is used as the alarm means in the above-described embodiment, other devices that emit an alarm sound may be used.
以上のとおり本発明によれば、レーザ加工機用安全装置
において、インターロック機構を解除したときに警報を
発する警報装置を設けるようにしたため、保守員に対し
ても十分な安全確保を図ることができるようになる。As described above, according to the present invention, the safety device for a laser processing machine is provided with an alarm device that issues an alarm when the interlock mechanism is released, so that it is possible to ensure sufficient safety for maintenance personnel. become able to.
第１図は本発明に係わるレーザ加工機用安全装置の一実
施例の回路図である。
１０・・・・・・シャッタ回路、
１１・・・・・・シャッタ用コイル、
１２・・・・・・直流電源、
１３．１４・・・・・・メーク接点、
２０・・・・・・安全カバー回路、
２１・・・・・・直流電源、
２ ２ 、 ２ ３ 、 ４ ３ ・・・ ・・・ リ
し − 、２４・・・・・・安全カバー開閉検出ス
イッチ、３０・・・・・・警報回路、
３１・・・・・・直流電源、
３２・・・・・・警報ランプ、
３３・・・・・・ブレーク接点、
３４．３５・・・・・・メーク接点、
４０・・・・・・レーザ電源回路、
４１・・・・・・レーザ用電源、
４２・・・・・・電源投入スイッチ、
Ａ・・・・・・レーザ加工機の電源部内に設けられる回
路ブロック、
Ｂ・・・・・・レーザ加工機本体内に設けられる回路ブ
ロック。
出 願 人
日本電気株式会社FIG. 1 is a circuit diagram of an embodiment of a safety device for a laser processing machine according to the present invention. 10...Shutter circuit, 11...Shutter coil, 12...DC power supply, 13.14...Make contact, 20... Safety cover circuit, 21...DC power supply, 22, 23, 43...Reli-, 24...Safety cover opening/closing detection switch, 30... ...Alarm circuit, 31...DC power supply, 32...Alarm lamp, 33...Break contact, 34.35...Make contact, 40... ... Laser power supply circuit, 41 ... Laser power supply, 42 ... Power supply switch, A ... Circuit block provided in the power supply section of the laser processing machine, B・・・・・・Circuit block installed inside the laser processing machine body. Applicant: NEC Corporation
Claims (1)
、前記レーザ加工機の周囲に設けられた安全カバーと、
前記安全カバーが開けられた状態で前記レーザ加工機を
動作させたときに前記シャッタを閉じてレーザ光の射出
を妨げる機能を有するインターロック装置と、前記イン
ターロック装置の前記機能を不能状態にして前記レーザ
加工機を動作させると警報を発する警報装置とを備える
ことを特徴とするレーザ加工機用安全装置。a shutter provided at a laser beam emitting part of a laser processing machine; a safety cover provided around the laser processing machine;
an interlock device having a function of closing the shutter to prevent laser beam emission when the laser processing machine is operated with the safety cover open; and disabling the function of the interlock device. A safety device for a laser processing machine, comprising: an alarm device that issues an alarm when the laser processing machine is operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61094805A JPH06280B2 (en) | 1986-04-25 | 1986-04-25 | Safety device for laser processing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61094805A JPH06280B2 (en) | 1986-04-25 | 1986-04-25 | Safety device for laser processing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62252690A true JPS62252690A (en) | 1987-11-04 |
| JPH06280B2 JPH06280B2 (en) | 1994-01-05 |
Family
ID=14120271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61094805A Expired - Lifetime JPH06280B2 (en) | 1986-04-25 | 1986-04-25 | Safety device for laser processing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06280B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0319789A (en) * | 1989-06-14 | 1991-01-28 | Fanuc Ltd | Control method for laser robot |
| JPH0457691A (en) * | 1990-06-26 | 1992-02-25 | Matsushita Electric Ind Co Ltd | Control method for articulated robot |
| JPH05192783A (en) * | 1992-01-20 | 1993-08-03 | Fanuc Ltd | Laser beam machine |
| JP2009262205A (en) * | 2008-04-25 | 2009-11-12 | Disco Abrasive Syst Ltd | Laser beam machine |
| US7723638B2 (en) * | 2006-07-18 | 2010-05-25 | Universal Laser Systems, Inc. | Laser conversion systems and methods for converting laser systems for operation in different laser safety classifications |
| JP2014140861A (en) * | 2013-01-23 | 2014-08-07 | Disco Abrasive Syst Ltd | Laser equipment |
| WO2018230198A1 (en) * | 2017-06-16 | 2018-12-20 | 株式会社 日立ハイテクノロジーズ | Automated analysis device |
| US10493561B2 (en) | 2014-12-26 | 2019-12-03 | Brother Kogyo Kabushiki Kaisha | Laser machining device provided with laser emitter emitting laser beam and machining chamber |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101638139B1 (en) * | 2014-06-25 | 2016-07-20 | 한국기계연구원 | Cylinder Tube Type Linear Flow Regulating Apparatus for Intravenous Infusion |
-
1986
- 1986-04-25 JP JP61094805A patent/JPH06280B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0319789A (en) * | 1989-06-14 | 1991-01-28 | Fanuc Ltd | Control method for laser robot |
| JPH0457691A (en) * | 1990-06-26 | 1992-02-25 | Matsushita Electric Ind Co Ltd | Control method for articulated robot |
| JPH05192783A (en) * | 1992-01-20 | 1993-08-03 | Fanuc Ltd | Laser beam machine |
| US7723638B2 (en) * | 2006-07-18 | 2010-05-25 | Universal Laser Systems, Inc. | Laser conversion systems and methods for converting laser systems for operation in different laser safety classifications |
| JP2009262205A (en) * | 2008-04-25 | 2009-11-12 | Disco Abrasive Syst Ltd | Laser beam machine |
| JP2014140861A (en) * | 2013-01-23 | 2014-08-07 | Disco Abrasive Syst Ltd | Laser equipment |
| US10493561B2 (en) | 2014-12-26 | 2019-12-03 | Brother Kogyo Kabushiki Kaisha | Laser machining device provided with laser emitter emitting laser beam and machining chamber |
| WO2018230198A1 (en) * | 2017-06-16 | 2018-12-20 | 株式会社 日立ハイテクノロジーズ | Automated analysis device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06280B2 (en) | 1994-01-05 |
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