JPS6135546Y2 - - Google Patents
Info
- Publication number
- JPS6135546Y2 JPS6135546Y2 JP13534980U JP13534980U JPS6135546Y2 JP S6135546 Y2 JPS6135546 Y2 JP S6135546Y2 JP 13534980 U JP13534980 U JP 13534980U JP 13534980 U JP13534980 U JP 13534980U JP S6135546 Y2 JPS6135546 Y2 JP S6135546Y2
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- thermocouple
- cooling tank
- thermocouples
- quenching furnace
- 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
- 238000001514 detection method Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 14
- 238000010791 quenching Methods 0.000 claims description 12
- 230000000171 quenching effect Effects 0.000 claims description 12
- 239000000110 cooling liquid Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】
本考案は、雰囲気ガス連続焼入炉れ炉のワーク
検知装置に関するものである。[Detailed Description of the Invention] The present invention relates to a workpiece detection device for an atmospheric gas continuous quenching furnace.
雰囲気ガス連続焼入れ炉は第１図および第２図
に示すようになつていて、雰囲気ガスを充満した
炉ａ内で加熱されたワークｂはブツシヤｃで押さ
れ、落下シユートｄにより冷却槽ｅに落下し、こ
こで冷却焼入れされた後ワークコンベヤｆにて焼
戻炉ｇへ供給されるようになつており、この一連
の動作は自動的になされるようになついる。 The atmospheric gas continuous quenching furnace is designed as shown in Figures 1 and 2. A workpiece b heated in a furnace a filled with atmospheric gas is pushed by a pusher c and dropped into a cooling tank e by a falling chute d. The material is dropped, cooled and hardened here, and then supplied to a tempering furnace g via a workpiece conveyor f, and this series of operations is automatically performed.
このような焼入れ炉にはワークｂが冷却槽ｅに
落下したかどうかを検知するワーク検知装置ｈが
備えられているが、従来のワーク検知装置ｈは第
２図に示すように、落下シユートｄの途中に設け
られ、ワークｂが通過することにより回動するよ
うにした回動部材１と、この回動部材１の回動に
より作動するリミツトスイツチｊとからなつてい
た。そしてこのワーク検知装置ｈは落下シユート
ｄの側壁に設けた蓋ｋにより組込みあるいは点検
するようになつていた。 Such a quenching furnace is equipped with a workpiece detection device h that detects whether the workpiece b has fallen into the cooling tank e, but the conventional workpiece detection device h detects whether the workpiece b has fallen into the cooling tank e or not, as shown in Fig. 2. It consisted of a rotating member 1, which was provided in the middle and rotated when the workpiece b passed therethrough, and a limit switch j, which was activated by the rotation of the rotating member 1. The workpiece detection device h is installed or inspected through a lid k provided on the side wall of the falling chute d.
このような従来のワーク検知装置では次のよう
な問題点があつた。 Such conventional workpiece detection devices have the following problems.
(1) 回動部材１が回動する際の機械的抵抗が大き
く、ワークｂに打痕がつきやすい。(1) The mechanical resistance when the rotating member 1 rotates is large, and the workpiece b is likely to be dented.
(2) メンテナンスが非常に困難である。ワーク検
知装置の交換、点検は落下シユートｄの側壁に
設けた蓋ｋをはずさなければならないため、こ
れを交換、点検するには炉の操業を停止して炉
内ガスを抜き、さらに炉内温度を降温しなけれ
ばならない。(2) Maintenance is very difficult. To replace or inspect the workpiece detection device, it is necessary to remove the cover k installed on the side wall of the falling chute d. To replace or inspect this, the furnace operation must be stopped, the gas inside the furnace must be vented, and the temperature inside the furnace must be checked. temperature must be lowered.
(3) 操業中に故障すると操業不能になることもあ
る。(3) If a failure occurs during operation, it may become impossible to operate.
(4) 一度故障すると復元するのに電力、時間、労
力などに大きなロスが生じる。(4) Once a failure occurs, there is a large loss in power, time, labor, etc. to restore it.
本考案は上記のことにかんがみなされたもので、
上記従来の問題点を解消できるようにした雰囲気
ガス連続焼入炉のワーク検知装置を提供しようと
するものである。This invention was developed in consideration of the above.
It is an object of the present invention to provide a workpiece detection device for an atmospheric gas continuous quenching furnace that can solve the above-mentioned conventional problems.
以下そ構成を第３図以下に示した実施例に基づ
いて説明する。 The configuration will be explained below based on the embodiment shown in FIG. 3 and below.
図中１は雰囲気ガス連続焼入れ炉であり、２は
プツシヤーで押されて炉内を移動するワーク、３
は落下シユート、４は冷却槽、５はワーク移動バ
ケツト、６はワークコンベヤであり、落下シユー
ト３より冷却槽４へ落下したワーク２はワーク移
動バケツト５にてワークコンベヤ６へ移動され、
このワークコンベヤ６にて焼戻炉へ運ばれるよう
になつている。７は冷却槽４の冷却液を撹拌すた
めに冷却液を噴出する噴口である。 In the figure, 1 is an atmospheric gas continuous quenching furnace, 2 is a workpiece that is pushed by a pusher and moves inside the furnace, and 3
is a falling chute, 4 is a cooling tank, 5 is a workpiece moving bucket, and 6 is a workpiece conveyor, and the workpiece 2 that has fallen from the falling chute 3 into the cooling tank 4 is moved by the workpiece moving bucket 5 to the workpiece conveyor 6,
The workpiece conveyor 6 transports the workpiece to the tempering furnace. Reference numeral 7 denotes a spout for spouting the cooling liquid in order to stir the cooling liquid in the cooling tank 4.
８は本考案に係るワーク検知装置で、このワー
ク検知装置８は相対熱電対９と、標準熱電対１０
と、両熱電対９，１０の起電力の差を比較演算す
るミリボルト調節計および操作盤等の計器１１と
からなつている。 8 is a workpiece detection device according to the present invention, and this workpiece detection device 8 includes a relative thermocouple 9 and a standard thermocouple 10.
and an instrument 11 such as a millivolt controller and an operation panel for comparing and calculating the difference between the electromotive forces of both thermocouples 9 and 10.
上記相対熱電対９は冷却槽４内のワーク落下位
置付近に設置されており、標準熱電対１０は冷却
槽４内のワーク落下位置から離れてワーク２の温
度に影響されない位置に設置されている。そして
この両熱電対９，１０は第４図に示すように結線
となり、両熱電対９，１０のマイナス端子が相互
に接続し、両熱電対９，１０のプラス端子間に上
記ミリボルト調節計等の計器１１を接続する。 The relative thermocouple 9 is installed near the workpiece dropping position in the cooling tank 4, and the standard thermocouple 10 is installed at a position away from the workpiece dropping position in the cooling tank 4 so as not to be affected by the temperature of the workpiece 2. . Both thermocouples 9 and 10 are connected as shown in FIG. 4, with the negative terminals of both thermocouples 9 and 10 connected to each other, and the above-mentioned millivolt controller etc. connected between the positive terminals of both thermocouples 9 and 10. Connect the meter 11.
両熱電対９，１０を上記のように結線すること
により、相対熱電対９に発生する起電力E9と標
準熱電対１０に発生す起電力E10との差が下記の
式で検出される。 By connecting both thermocouples 9 and 10 as described above, the difference between the electromotive force E 9 generated in the relative thermocouple 9 and the electromotive force E 10 generated in the standard thermocouple 10 is detected using the following formula. .
E9−E10＝±Ｘ
第５図は落下シユート３が複数列である場合の
ワーク検知装置をすもので、各落下シユートに相
対熱電対９ａ，９ｂ，９ｃ……が設けてある。 E 9 −E 10 =±X FIG. 5 shows a workpiece detection device when there are multiple rows of falling chutes 3, and each falling chute is provided with relative thermocouples 9a, 9b, 9c, . . . .
上記構成において、落下シユート３にワーク２
が落下していないとしには冷却液の温度差がない
ので両熱電対９，１０間の起電力差はゼロかある
一定の起電力差がある。そしてワーク２が落下し
てくるとワーク落下位置付近の冷却液の温度が時
間的に上昇し、ここに位置する相対熱電対９が加
熱され、両熱電対間に大きな起電力差が生じ、こ
れをミリボルト調整計等の計器１１で検出するこ
とによつてワーク２が落下シユート３を落下した
ことを検知する。そしてこれに基づいてワーク２
を押すプツシヤが後退して次のワークを落下する
準備をする。 In the above configuration, the workpiece 2 is placed on the falling chute 3.
If the thermocouples 9 and 10 are not falling, there is no temperature difference in the coolant, so the difference in electromotive force between the two thermocouples 9 and 10 is either zero or a certain amount. When the workpiece 2 falls, the temperature of the coolant near the workpiece falling position rises over time, and the relative thermocouple 9 located here is heated, creating a large electromotive force difference between the two thermocouples. By detecting this with a meter 11 such as a millivolt adjuster, it is detected that the workpiece 2 has fallen down the drop chute 3. And based on this work 2
The pusher moves back and prepares to drop the next workpiece.
上記ワーク２が落下する付近の冷却水温はワー
ク２の落下と共に瞬間に上昇するが、冷却液は撹
拌されることにより、ワーク２が通りすぎると再
び元の温度に速やかに戻る。 The temperature of the cooling water near where the workpiece 2 falls rises instantaneously as the workpiece 2 falls, but because the cooling liquid is stirred, it quickly returns to its original temperature once the workpiece 2 passes by.
本考案は以上のようになり、雰囲気ガス内で加
熱されたワーク２をプツシヤで順次押して落下シ
ユート３より冷却槽４内へ落下させ、冷却槽４で
焼入れしたワーク２を順次とり出すようにした雰
囲気ガス連続焼入れ炉において、冷却槽４内で、
上記ワーク２の落下位置付近に相対熱電対９を、
またワーク落下位置から離れてワーク２の温度に
影響されない位置に標準熱電対１０を設置し、こ
の両熱対９，１０のそれぞれのマイナス端子を相
互に接続し、それぞれのプラス端子間に両熱電対
９，１０の起電力の差を検出する計器１１を接続
して雰囲気ガス連続焼入れ装置のワーク検知装置
を構成したことにより、ワーク２はワーク検知装
置と干渉することながないからワーク２に打痕が
生じることがなくなり、またかりに操業中に故障
したとしても従来のように炉壁を開ける必要が殆
んどなく、メンテナンスが非常に簡単であり、現
場の作業者でも短時間で行なうことができる。さ
らに従来の装置に比較して機械的動作がないた
め、故障率を大幅に軽減することができる。 The present invention is as described above, and the workpieces 2 heated in an atmospheric gas are successively pushed by a pusher to fall into the cooling tank 4 from the drop chute 3, and the workpieces 2 that have been hardened in the cooling tank 4 are taken out one after another. In the atmospheric gas continuous quenching furnace, in the cooling tank 4,
A relative thermocouple 9 is placed near the falling position of the work 2,
In addition, a standard thermocouple 10 is installed at a position away from the workpiece dropping position and is not affected by the temperature of the workpiece 2, and the negative terminals of both thermocouples 9 and 10 are connected to each other, and both thermocouples are connected between the positive terminals of the two thermocouples 9 and 10. By connecting the instrument 11 that detects the difference between the electromotive forces of pairs 9 and 10 to configure the workpiece detection device of the atmospheric gas continuous quenching device, the workpiece 2 does not interfere with the workpiece detection device, so the workpiece 2 There are no dents, and even if something breaks down during operation, there is almost no need to open the furnace wall like in the past, making maintenance extremely easy and can be done in a short amount of time even by on-site workers. Can be done. Furthermore, since there is no mechanical movement compared to conventional devices, failure rates can be significantly reduced.
第１図は雰囲気ガス連続焼入れ炉の構成を説明
するための平面図、第２図は従来のワーク検知装
置を備えた雰囲気ガス連続焼入れ炉の要部の断面
図、第３図は本考案のワーク検知装置を備えた要
部の断面図。第４図は熱電対の接続図、第５図は
複数の落下シユートを備えた場合の熱電対の接続
図である。
２はワーク、３は落下シユート、４は冷却槽、
９は相対熱電対、１０は標準熱電対、１１は計
器。
Fig. 1 is a plan view for explaining the configuration of an atmospheric gas continuous quenching furnace, Fig. 2 is a cross-sectional view of the main part of an atmospheric gas continuous quenching furnace equipped with a conventional workpiece detection device, and Fig. 3 is a plan view for explaining the configuration of an atmospheric gas continuous quenching furnace. FIG. 3 is a sectional view of a main part including a workpiece detection device. FIG. 4 is a connection diagram of a thermocouple, and FIG. 5 is a connection diagram of a thermocouple when a plurality of drop chutes are provided. 2 is the workpiece, 3 is the falling chute, 4 is the cooling tank,
9 is a relative thermocouple, 10 is a standard thermocouple, and 11 is a meter.
Claims (1)
で順次押して落下シユート３より冷却槽４内へ落
下させ、冷却槽４で焼入れしたワーク２を順次と
り出すようにした雰囲気ガス連続焼入れ炉におい
て、冷却槽４内で、上記ワーク２の落下位置付近
に相対熱電対９を、またワーク落下位置から離れ
てワーク２の温度に影響されない位置に標準熱電
対１０を設置し、この両熱電対９，１０のそれぞ
れのマイナス端子を相互に接続し、それぞれのプ
ラス端子間に両熱電対９，１０の起電力の差を検
出する計器を接続してなることを特徴とする雰囲
気ガス連続焼入炉のワーク検知装置。 In an atmosphere gas continuous quenching furnace, the work 2 heated in the atmosphere gas is successively pushed by a pusher and dropped into the cooling tank 4 from the drop chute 3, and the work 2 hardened in the cooling tank 4 is taken out one after another. 4, a relative thermocouple 9 is installed near the dropping position of the workpiece 2, and a standard thermocouple 10 is installed at a position away from the workpiece dropping position that is not affected by the temperature of the workpiece 2. Workpiece detection in an atmospheric gas continuous quenching furnace, characterized in that the negative terminals of each thermocouple are connected to each other, and an instrument for detecting the difference in electromotive force of both thermocouples 9 and 10 is connected between the positive terminals of each thermocouple. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13534980U JPS6135546Y2 (en) | 1980-09-25 | 1980-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13534980U JPS6135546Y2 (en) | 1980-09-25 | 1980-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5759858U JPS5759858U (en) | 1982-04-08 |
| JPS6135546Y2 true JPS6135546Y2 (en) | 1986-10-16 |
Family
ID=29495515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13534980U Expired JPS6135546Y2 (en) | 1980-09-25 | 1980-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6135546Y2 (en) |
-
1980
- 1980-09-25 JP JP13534980U patent/JPS6135546Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5759858U (en) | 1982-04-08 |
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