JPS6080028A - Combustion machine safety device - Google Patents
Combustion machine safety deviceInfo
- Publication number
- JPS6080028A JPS6080028A JP58189743A JP18974383A JPS6080028A JP S6080028 A JPS6080028 A JP S6080028A JP 58189743 A JP58189743 A JP 58189743A JP 18974383 A JP18974383 A JP 18974383A JP S6080028 A JPS6080028 A JP S6080028A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- oxygen deficiency
- combustion
- input
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
- F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
- F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 産業上の利用分野 本発明は酸欠検知回路を設けた燃焼機の安全袋２ベジ 置に関するものである。[Detailed description of the invention] Industrial applications The present invention is a safety bag for a combustion machine equipped with an oxygen deficiency detection circuit. It's about location.
従来例の構成とその問題点
従来の酸欠検出回路を有する燃焼機の安全装置は第１図
に示す様に燃焼状態が極端に悪化した時作動する失火検
出回路１１より高いレベルに設定された酸欠検知回路１
０の出力と燃焼開始后一定時間作動するタイマー回路１
３〜１７の出力とを入力とするＡＮＤ回路１２を備え、
前記ＡＮＤ回路１２の出力をＯＲ回路３７で構成された
リセット回路の入力へ接続しただけのものであった。そ
して上記安全装置は燃焼開始直后の燃焼の不安定により
酸欠検知回路が誤作動するのを防止する為、燃焼開始后
一定時間のみ酸欠検知回路の出力をロックする為のタイ
マー回路を有し、前記タイマー回路がタイムアツプ后、
即ち燃焼が安定した后酸欠検出回路が作動するという構
成であった。Conventional configuration and its problems As shown in Fig. 1, the safety device of a combustion machine with a conventional oxygen deficiency detection circuit is set at a higher level than the misfire detection circuit 11 which is activated when the combustion condition becomes extremely deteriorated. Oxygen deficiency detection circuit 1
Timer circuit 1 that operates for a certain period of time after the output of 0 and the start of combustion
It includes an AND circuit 12 which receives the outputs of 3 to 17 as input,
The output of the AND circuit 12 was simply connected to the input of a reset circuit composed of an OR circuit 37. The above safety device has a timer circuit that locks the output of the oxygen deficiency detection circuit for a certain period of time after the start of combustion, in order to prevent the oxygen deficiency detection circuit from malfunctioning due to instability of combustion immediately after the start of combustion. Then, after the timer circuit times out,
In other words, the configuration was such that the oxygen deficiency detection circuit was activated after combustion was stabilized.
しかしこの構成によると、室内温度、即ち、燃焼用空気
温度が極端に低下している場合にあっては、タイマー回
路がタイムアツプ后も燃焼用空気量が増大しているのと
同様の状態となり、燃焼不３・ 。However, according to this configuration, when the indoor temperature, that is, the temperature of combustion air is extremely low, the timer circuit remains in the same state as if the amount of combustion air was increasing even after time-up. No combustion 3.
安定の状態が継続する。よって酸欠状態でないのに酸欠
検知回路が作動し、燃焼が停止するという不具合点があ
った。Stable conditions continue. Therefore, there was a problem in that the oxygen deficiency detection circuit was activated and combustion stopped even though there was no oxygen deficiency condition.
発明の目的
本発明は上記不具合点を解消する為になされたもので、
室内温度が極端に低下した時、酸欠検知回路の出力をロ
ックし、燃焼用空気温度低下時の燃焼不安定による酸欠
検知回路の誤作動を防止することを目的としたものであ
る。Purpose of the Invention The present invention was made to solve the above-mentioned problems.
The purpose of this system is to lock the output of the oxygen deficiency detection circuit when the indoor temperature drops extremely to prevent malfunction of the oxygen deficiency detection circuit due to unstable combustion when the combustion air temperature drops.
発明の構成
上記目的を達成するため本発明は室内温度検出用サーモ
回路の通常制御温度以外に前記温度より更に低下した時
作動する検出器を設け、その出力と燃焼開始后一定時間
作動するタイマー回路の出力１ＡＮＤ回路で構成し、更
にその出力と酸欠検出回路の出力ｅＡＮＤＡＮＤ回路し
安全回路へ接続するようになっている。Structure of the Invention In order to achieve the above object, the present invention provides a detector which operates when the temperature drops further below the normal control temperature of the thermocircuit for indoor temperature detection, and a timer circuit which operates for a certain period of time after the start of combustion based on the output of the detector. It consists of an output 1AND circuit, and the output is further connected to the output eAND circuit of the oxygen deficiency detection circuit and a safety circuit.
実施例の説明 以下その一実施例を第２図を用いて説明する。Description of examples An example of this will be described below with reference to FIG.
第２図において、１は燃焼検出回路用交流電源、１８開
昭Ｇｏ−８００２８（２）
２はバーナ、３は燃焼炎内に挿入したフレームロッド、
４，５は抵抗、６はコンデンサで、上記１〜６で炎の整
流作用を利用した燃焼検出回路ｆ：構成しており、燃焼
炎の状態により電流値が変化してコンデンサ６の両端電
圧が変化するようになっている。７〜９は抵抗で、失火
検知及び酸欠検知レベ）Ｖｆ段設定ている。抵抗７と８
の接続点が酸欠検知レベル、抵抗８と９の接続点が失火
検知レベルである。１０は酸欠検知用検出器、１１は失
火検知用検出器、１２１−ｔＡＮＤＡＮＤ回路、前記酸
欠検知用検出器１０の出力と後記ＡＮＤ回路５４の出力
とを入力とし、その出力は安全回路を構成するＯＲ回路
３７の入力へ接続されている。In Fig. 2, 1 is an AC power supply for the combustion detection circuit, 18 Kaisho Go-80028 (2), 2 is a burner, 3 is a flame rod inserted into the combustion flame,
4 and 5 are resistors, 6 is a capacitor, and 1 to 6 above constitute a combustion detection circuit f that uses flame rectification.The current value changes depending on the state of the combustion flame, and the voltage across the capacitor 6 changes. It's about to change. 7 to 9 are resistors, and the misfire detection and oxygen deficiency detection levels (Vf levels) are set. Resistance 7 and 8
The connection point between resistors 8 and 9 is the oxygen deficiency detection level, and the connection point between resistors 8 and 9 is the misfire detection level. 10 is an oxygen deficiency detection detector, 11 is a misfire detection detector, 121-tANDAND circuit, the output of the oxygen deficiency detection detector 10 and the output of the AND circuit 54 described later are input, and the output is connected to a safety circuit. It is connected to the input of the constituent OR circuit 37.
１３〜１５は抵抗、１６はコンデンサ、１７は増巾器で
、この１３〜１７で燃焼開始后一定時間前記酸欠検出回
路１０の出力を安全回路へ送らない為のタイマー回路を
構成している。１８は室内温度検出用サーミスタ、１９
．２０，２２，５１ 。13 to 15 are resistors, 16 is a capacitor, and 17 is an amplifier, and these 13 to 17 constitute a timer circuit for not sending the output of the oxygen deficiency detection circuit 10 to the safety circuit for a certain period of time after the start of combustion. . 18 is a thermistor for indoor temperature detection, 19
．． 20, 22, 51.
５２１ｄ抵抗で、室内温度検出用サーモ回路の温度レベ
）Ｖｆ段設定ている。抵抗２２と５１の接続点５べ一７
゛
が通常制御温度レベル、抵抗５１と５２の接続点が酸欠
検出回路ケロックする温度レベルである。The temperature level (Vf) of the thermo circuit for indoor temperature detection is set by the 521d resistor. Connection point 5 and 7 between resistors 22 and 51
'' is the normal control temperature level, and the temperature level at which the connection point between the resistors 51 and 52 is activated by the oxygen deficiency detection circuit.
２３．５３は検出器で、前記各レベルにおいて出力状態
を決定する。２４は抵抗、２５はコンデンサ、２６ｔＩ
′１ＡＮＤ回路、２７はダイオード、２８は抵抗であり
、この２４〜２８でプリパージ回路を構成している。２
９は抵抗、３０はＡＮＤ回路で、前記プリパージ回路の
出力と失火検知用検出器１１の出力を入力とした点火器
駆動回路である。23.53 is a detector which determines the output state at each level. 24 is a resistor, 25 is a capacitor, 26tI
'1AND circuit, 27 is a diode, 28 is a resistor, and these 24 to 28 constitute a prepurge circuit. 2
9 is a resistor, and 30 is an AND circuit, which is an igniter drive circuit which inputs the output of the pre-purge circuit and the output of the misfire detection detector 11.
３１はダイオードで、前記失火検知用検出器１１の出力
により後記不着火安全タイマー回路の動作を制御する。A diode 31 controls the operation of a misfire safety timer circuit described later based on the output of the misfire detection detector 11.
３２〜３４は抵抗、３５はコンデンサ、３６は増巾器で
、この３２〜３６で不着火安全タイマー回路を構成して
いる。３７はＯＲ回路で、前記不着火安全タイマー回路
の出力と酸欠検知回路の出力とを入力とする安全回路で
ある。32 to 34 are resistors, 35 is a capacitor, and 36 is an amplifier, and these 32 to 36 constitute a non-ignition safety timer circuit. Reference numeral 37 denotes an OR circuit, which is a safety circuit that receives the output of the non-ignition safety timer circuit and the output of the oxygen deficiency detection circuit as inputs.
３８〜４１はオープンコレクタの駆動回路、４２はモー
タ駆動部、４３は燃料供給用電磁ポンプ駆動部、４４Ｆ
ｉ点火器駆動部、４５は二巻線のラッチリレーで、セッ
トコイル、リセットコイルの二６ペー〕！
つのコイルを有し、一度どちらかのコイルでセットされ
ると異なるコイルが励磁されるまでその状態を保持し続
ける。４６は前記二巻線ラッチリレーの接点で、異常時
開状態となり全回路停止する。38 to 41 are open collector drive circuits, 42 is a motor drive unit, 43 is a fuel supply electromagnetic pump drive unit, 44F
i Ignition drive unit, 45 is a two-winding latch relay, set coil and reset coil page 26]! It has two coils, and once one coil is set, it remains in that state until a different coil is energized. Reference numeral 46 denotes a contact point of the two-winding latch relay, which becomes open in the event of an abnormality and stops all circuits.
４７は復帰用スイッチ、４８は直流電源、４９は抵抗、
５０はオープンコレクタの駆動回路で、燃焼停止時の酸
欠検出回路の誤作動の防止用である。47 is a reset switch, 48 is a DC power supply, 49 is a resistor,
Reference numeral 50 denotes an open collector drive circuit, which is used to prevent malfunction of the oxygen deficiency detection circuit when combustion is stopped.
５４はＡＮＤ回路で、燃焼初期一定時間作動するタイマ
ー回路１７の出力と室内温度が極端に低下した時作動す
る検出器５３の出力とを入力とし、その出力１ＡＮＤ回
路１２へ入力している。Reference numeral 54 denotes an AND circuit, which inputs the output of the timer circuit 17 that operates for a certain period of time at the beginning of combustion and the output of the detector 53 that operates when the indoor temperature drops extremely, and inputs its output 1 to the AND circuit 12.
上記構成において、その動作を簡単に説明すると、まず
室内温度がＶ Ｂ ＞ ＶＡ ＞ ＶＣの関係にある場
合は検出器２３は■入力〉θλ力となり、出力は％ＨＩ
となる。よって次段の回路に電源が供給さｎ１モ一タ駆
動部４２がＯＮし、プリパージ回路により燃料供給用電
磁ポンプ駆動部４３及び点火器駆動部４４がＯＮＬ、着
火動作に入る。In the above configuration, the operation will be briefly explained. First, when the indoor temperature is in the relationship of V B > VA > VC, the detector 23 becomes ■ input>θλ force, and the output is %HI
becomes. Therefore, power is supplied to the next stage circuit, the n1 motor drive section 42 is turned on, and the fuel supply electromagnetic pump drive section 43 and the igniter drive section 44 enter ONL and ignition operation by the pre-purge circuit.
次に検出器５３は■入力〉ｅ入力の為、出力は１Ｈギと
なり、ＡＮＤ回路６４０片側の入力は％Ｈダ７・℃
状態となる。もう一方の入力は燃焼初期は増巾器１７の
出力が％Ｌｆの為、％しり状態となる。よってＡＮＩ）
回路５４の出力は−Ｌ＃、ＡＮＤ回路１２の入力１μで
出力も％ＬＦとなる。抵抗１３を介してコンデンサ１６
への充電が進み、抵抗１４と１５で定まる電位まで充電
されると、検出器１７の出力は反転し％Ｈ’となる。こ
の時点でＡＮＤ回路５４の出力も％ＨＩとなり、ＡＮＤ
回路１２の片側の入力（ｊ’Ｈ”状態とし、もう一方の
入力、即ち酸欠検知回路１０の出力状態によりＡＮＤ回
路１２の出力状態を決定する。Next, since the detector 53 has ■input>e input, the output becomes 1H, and the input on one side of the AND circuit 640 becomes %H 7.degree. Since the output of the amplifier 17 is %Lf in the early stage of combustion, the other input is in a % slump state. Therefore, ANI)
The output of the circuit 54 is -L#, and when the input of the AND circuit 12 is 1μ, the output is also %LF. Capacitor 16 via resistor 13
As the charging progresses and reaches the potential determined by the resistors 14 and 15, the output of the detector 17 is inverted and becomes %H'. At this point, the output of the AND circuit 54 also becomes %HI, and the AND
One side of the input of the circuit 12 is in the j'H'' state, and the output state of the AND circuit 12 is determined by the other input, that is, the output state of the oxygen deficiency detection circuit 10.
この様に検出器５３のｅ入カレベルＶＣまでの室内温度
状態に於いては、酸欠検知回路１０の出力は燃焼初期一
定時間作動するタイマー回路によりロックされる。In this manner, when the indoor temperature reaches the e-input level VC of the detector 53, the output of the oxygen deficiency detection circuit 10 is locked by the timer circuit which operates for a certain period of time at the beginning of combustion.
次に室内温度が更に低下し、Ｖ Ｂ ＞ Ｖ Ｃ＞ Ｖ
Ａの関係になると、検出器５３の入力関係がｅ入力〉
■入力となり、出力は箪Ｌｔ状態となる。よってＡＮＤ
回路５４の片側の入力が％Ｌ＃となり、出力ＳＬ＃に反
転し、ＡＮＤ回路１２０入力ｉ’Ｌ”状特開昭１１ｉ０
−８００２８（３）
態とする。この為室内温度が低下し、燃焼状態が不安定
［なって、検出器１０のｅ入力が低下し、出力が％ＨＷ
となっても、ＡＮＤ回路１２の出力はＬ状態のま＼であ
り、リセット回路への信号供給はしない。更に燃焼状態
が悪化し、検出器１１の■入力つまり失火検知レベ／Ｉ
／まで低下すると、検出器１１の出力が％）（ｆ状態と
なり、抵抗３２を介してコンデンサ３５へ充電が開始さ
れ、所定レベルに達すると増巾器３６の出力が蟻Ｈｆと
なり、ＯＲ回路３７の出力−Ｈ＃に反転し、二巻線ラッ
チリレー４５が励磁され、接点４６が開状態となり、全
回路停止する。Next, the indoor temperature decreases further, and V B > V C > V
When the relationship is A, the input relationship of the detector 53 is e input>
■It becomes an input, and the output becomes the state Lt. Therefore, AND
The input on one side of the circuit 54 becomes %L#, which is inverted to the output SL#, and the AND circuit 120 input i'L" state
-80028(3) state. As a result, the indoor temperature decreases, the combustion state becomes unstable, and the e input to the detector 10 decreases, causing the output to decrease by %HW.
Even if this happens, the output of the AND circuit 12 remains in the L state, and no signal is supplied to the reset circuit. The combustion condition further worsens, and the ■ input of the detector 11, that is, the misfire detection level /I
/, the output of the detector 11 becomes %)(f state, charging starts to the capacitor 35 via the resistor 32, and when it reaches a predetermined level, the output of the amplifier 36 becomes Hf, and the OR circuit 37 The output is reversed to -H#, the two-winding latch relay 45 is energized, the contact 46 is opened, and all circuits are stopped.
又、酸欠検出回路の出力ロック状態にあって、室内温度
が上昇し所定レベ／Ｉ／ｖｃ以上になると、前記ロック
状態は解除さｎ、正規の設定レベルで酸欠検出回路は作
動する訳である。したがって、室内温度が一時的に低下
した場合とか、室内温度の立上りが悪い時等の燃焼空気
温度が低い為に起こる燃焼不安定による酸欠検知回路の
誤作動という問題はなくなる。尚、本発明の実施例にお
いて９ぺ一Σ
は、酸欠検知回路の出力とタイマー回路の出力と低温時
作動するサーモ回路の出力で構成するＮ０回路の組合せ
のうち、第１ＡＮＤ回路をサーモ回路の出力とタイマー
回路の出力で、第２ＡＮＤ回路を前記第１ＡＮＤ回路の
出力と酸欠検知回路の出力で構成し、第２ＡＮＤ回路の
出力を安全回路へ入力した組合せについて説明したが、
それ以外の組合せとして第１ ＡＮＤ回路をタイマー回
路の出力と酸欠検知回路の出力で、第２ＡＮＤ回路をサ
ーモ回路の出力と前記第１ ＡＮＤ回路の出力で構成し
てもよい。又、第１ ＡＮＤ回路をサーモ回路の出力と
酸欠検知回路の出力で、第２ＡＮＤ回路をタイマー回路
の出力と前記第１ ＡＮＤ回路の出力で構成しても同様
の効果が期待出来る。Furthermore, if the output of the oxygen deficiency detection circuit is locked and the indoor temperature rises to a predetermined level /I/vc or higher, the locked state will be released and the oxygen deficiency detection circuit will operate at the normally set level. It is. Therefore, the problem of malfunction of the oxygen deficiency detection circuit due to unstable combustion caused by low combustion air temperature when the indoor temperature temporarily decreases or when the indoor temperature rises slowly is eliminated. In the embodiment of the present invention, 9P1 Σ is a combination of N0 circuits consisting of the output of the oxygen deficiency detection circuit, the output of the timer circuit, and the output of the thermo circuit that operates at low temperatures, and the first AND circuit is the thermo circuit. We have explained a combination in which the second AND circuit is configured with the output of the first AND circuit and the output of the oxygen deficiency detection circuit, and the output of the second AND circuit is input to the safety circuit.
As another combination, the first AND circuit may be configured with the output of the timer circuit and the output of the oxygen deficiency detection circuit, and the second AND circuit may be configured with the output of the thermo circuit and the output of the first AND circuit. Further, the same effect can be expected even if the first AND circuit is configured with the output of the thermo circuit and the output of the oxygen deficiency detection circuit, and the second AND circuit is configured with the output of the timer circuit and the output of the first AND circuit.
発明の効果
この様に本発明によｎば、燃焼初期一定時間作動するタ
イマー回路以外に室内温度の状態によって、酸欠検知回
路、の出力状態を決定する為、前記の様に室内温度が一
時的に低下した場合の燃焼不安定状態及び室内温度の立
上りが悪い時の燃焼不１０べ ン゛
安定状態等、酸欠状態以外の原因による酸欠検知回路の
誤作動を防止するという効果がある。Effects of the Invention As described above, according to the present invention, in addition to the timer circuit that operates for a certain period of time at the initial stage of combustion, the output state of the oxygen deficiency detection circuit is determined depending on the state of the room temperature. This has the effect of preventing malfunctions of the oxygen deficiency detection circuit due to causes other than oxygen deficiency conditions, such as unstable combustion when the internal temperature drops and unstable combustion when the indoor temperature rises slowly. .
第１図は従来の安全装置の回路図、第２図は本発明の一
実施例における安全装置の回路図である。
２・・・・・・バーナ、３・・・・・・フレームロッド
、１０・・・・・・酸欠検知用検出器、１１・・・・・
・失火検知用検出器、１７・・・・・・タイマー回路用
増巾器、１２・・・・・・第２ＡＮＤ回路、５３・・・
・・・サーモ回路用検出器、５４・・・・・・第１ Ａ
ＮＤ回路。FIG. 1 is a circuit diagram of a conventional safety device, and FIG. 2 is a circuit diagram of a safety device according to an embodiment of the present invention. 2...Burner, 3...Frame rod, 10...Oxygen deficiency detection detector, 11...
- Misfire detection detector, 17... Timer circuit amplifier, 12... Second AND circuit, 53...
...Thermo circuit detector, 54...1st A
ND circuit.
Claims (1)
て作動する失火検知回路と、前記失火レベルよシ高いレ
ベルに設定され、酸欠時等の異常燃焼時に作動する酸欠
検知回路と、燃焼開始后所定時間作動するタイマー回路
と、室内温度が通常制御温度より更に低下した時作動す
るサーモ回路とを備え、前記酸欠検知回路とタイマー回
路とサーモ回路のうちのいずれか二つの出力を第１ Ａ
ＮＤ回路の入力とし、この第１ＡＮＤ回路の出力と前記
酸欠検知回路、タイマー回路、サーモ回路のうちの残シ
の回路の出力とを入力とする第２ＡＮＤ回路の出力を安
全回路への入力したことを特徴とする燃焼機の安全装置
。A misfire detection circuit that uses flame rectification to detect misfire conditions such as when oil runs out and activates; and an oxygen deficiency detection circuit that is set to a higher level than the misfire level and activates in the event of abnormal combustion such as oxygen deficiency. circuit, a timer circuit that operates for a predetermined period of time after the start of combustion, and a thermocircuit that operates when the indoor temperature falls further below the normal control temperature; two outputs to the first A
The output of the second AND circuit is input to the safety circuit, and the output of the first AND circuit and the output of the remaining circuits among the oxygen deficiency detection circuit, the timer circuit, and the thermo circuit are input to the ND circuit. A safety device for a combustion machine characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58189743A JPS6080028A (en) | 1983-10-11 | 1983-10-11 | Combustion machine safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58189743A JPS6080028A (en) | 1983-10-11 | 1983-10-11 | Combustion machine safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6080028A true JPS6080028A (en) | 1985-05-07 |
| JPS6367611B2 JPS6367611B2 (en) | 1988-12-27 |
Family
ID=16246431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58189743A Granted JPS6080028A (en) | 1983-10-11 | 1983-10-11 | Combustion machine safety device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6080028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009034711A (en) * | 2007-08-02 | 2009-02-19 | Komatsu Ltd | Mold clamping mechanism of press machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0466316U (en) * | 1990-10-23 | 1992-06-11 | ||
| JPH0466315U (en) * | 1990-10-23 | 1992-06-11 |
-
1983
- 1983-10-11 JP JP58189743A patent/JPS6080028A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009034711A (en) * | 2007-08-02 | 2009-02-19 | Komatsu Ltd | Mold clamping mechanism of press machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6367611B2 (en) | 1988-12-27 |
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