JPH02306091A - Conveying speed controlling mechanism for roller hearth type heating furnace - Google Patents
Conveying speed controlling mechanism for roller hearth type heating furnaceInfo
- Publication number
- JPH02306091A JPH02306091A JP12734589A JP12734589A JPH02306091A JP H02306091 A JPH02306091 A JP H02306091A JP 12734589 A JP12734589 A JP 12734589A JP 12734589 A JP12734589 A JP 12734589A JP H02306091 A JPH02306091 A JP H02306091A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- rollers
- roller
- heating furnace
- heated
- 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
- 238000010438 heat treatment Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 abstract description 15
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 1
Landscapes
- Control Of Conveyors (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Tunnel Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業」二の利用分野〉
本発明はローラハース式加熱炉における搬送速度制御機
構に関する。DETAILED DESCRIPTION OF THE INVENTION <Industry> Second Field of Application The present invention relates to a conveyance speed control mechanism in a roller hearth heating furnace.
トンネル型の炉内を多数のローうで被熱物を搬送しつつ
加熱処理するローラハース式加熱炉が広く利用されてい
る。該ローラハース式加熱炉においては、その前後の１
程との関係も含めて、被熱物を所期の通りに加熱処理す
るために、被熱物の搬送速度を制御することが必要であ
る。2. Description of the Related Art Roller hearth type heating furnaces are widely used, in which objects to be heated are conveyed through a tunnel-shaped furnace and heated through a number of rows. In the roller hearth type heating furnace,
It is necessary to control the transport speed of the object to be heated, including the relationship with the temperature, in order to heat the object as desired.
本発明は、ローラハース式加熱炉において、被熱物の搬
送速度を制御する機構の改良に関するものである。The present invention relates to an improvement in a mechanism for controlling the conveyance speed of objects to be heated in a roller hearth heating furnace.
く従来の技術、その課題〉
従来、ローラハース式加熱炉における搬送速度制御機構
として、各ローラの回転速度を個別に制御するものが使
用されている。これは、各ローラの駆動そ一夕にそれぞ
れ速度検出器が取付けられており、該速度検出器で検出
された検出速度と設定速度との間の速度差に相当する信
号な各ローラ毎で個別にフィードバックする制置機構で
ある。BACKGROUND ART Conventionally, as a conveyance speed control mechanism in a roller hearth type heating furnace, one that individually controls the rotational speed of each roller has been used. A speed detector is attached to each roller as it drives, and a signal corresponding to the speed difference between the detected speed detected by the speed detector and the set speed is sent individually to each roller. It is a restraining mechanism that provides feedback to the
ところが、かかる従来の搬送速度制御機構には、全体と
して機構が煩雑に過ぎ、また取扱いも面倒で、更に高価
であるという課題がある。However, such a conventional transport speed control mechanism has problems in that the mechanism as a whole is too complicated, difficult to handle, and expensive.
〈発明が解決しようとする課題、その解決手段〉本発明
は叙上の如き従来の課題を解決する改良された搬送速度
制御ｌ１機構を堤供するものである。<Problems to be Solved by the Invention and Means for Solving the Problems> The present invention provides an improved transport speed control l1 mechanism that solves the conventional problems as described above.
しかして本発明は、ローラハース式加熱炉におけるロー
ラな複数の群に区分して各群毎でローラの回転速度を調
節１−ることにより被熱物の搬送速度を制御する機構で
あって、各群毎に、下記式（１）のｎを充足する最大整
数本のローラ間隔で該当するローラの駆動モータに速度
検出器が取付けられており、該速度検出器はり−セレク
タへと、また該ローセレクタはＶＶＶＦ装置へと、更に
該ＶＶＶＦ装置は各ローラの駆動モータへとそれぞれ接
続されていて、該ローセレクタで選択された最低速度と
設定速度との間の速度差に相当する信号をＶＶＶＦｌｍ
へとフィードバックするように構成してなる搬送速度制
御機構に係る。Therefore, the present invention is a mechanism for controlling the conveyance speed of the heated object by dividing the rollers into a plurality of groups in a roller hearth type heating furnace and adjusting the rotational speed of the rollers for each group. For each group, speed detectors are attached to the drive motors of the corresponding rollers at intervals of the maximum integer number of rollers that satisfy n in the following formula (1), and the speed detectors are connected to the beam-selector and the rollers are connected to the selector. The selector is connected to the VVVF device, and the VVVF device is connected to the drive motor of each roller, and sends a signal corresponding to the speed difference between the lowest speed selected by the low selector and the set speed to VVVFlm.
This relates to a conveyance speed control mechanism configured to provide feedback to the conveyance speed control mechanism.
式（１）：ｎ≦（′Ｍ熱物の搬送方向の長さ／ローラピ
ッチンー１
く作用〉
本発明において肝要な点は２０一ラハース式加熱炉にお
けるローラを複数の群に区分して各群毎でローラの回転
数を調節することにより被熱物の搬送速度を制御する処
にある。ローラハース式加熱炉では、その人口部、中間
部及び出口部において、液熱物の搬送速度を変える必要
があり、また中間部においても、加熱処理Ｑ月−１的に
応じて適宜液熱物の搬送速度を変える必要のある場合が
あるからである。Equation (1): n≦('M Length in the direction of conveyance of hot material/Roller pitch - 1 action)> The important point in the present invention is that the rollers in the 20-1 Lahas heating furnace are divided into a plurality of groups and each The conveying speed of the heated material is controlled by adjusting the number of rotations of the rollers for each group.In a roller hearth type heating furnace, the conveying speed of the liquid hot material is changed in the population section, middle section, and exit section. This is because there are cases where it is necessary to change the conveyance speed of the liquid hot material as appropriate depending on the heat treatment Q month-1 even in the intermediate portion.
また本発明において肝要な点は、谷群毎に、１１ｊ記式
（１）を充足する最大整数本のローラ間隔で該゛：ｊす
るローラの駆動モータに速度検出器を取付け、譲速度検
出器で検出された検出速度のうちで最低速度をローセレ
クタにより選択する処にある５例えば、液熱物の搬送方
向の長さが６．３ｍで、ローラピッチが１．８ｍの場合
、ｎは２．５以ドとなるので、２５以下を充足する最大
整数本すなわち２本間隔で該当するローラの駆動モータ
に速度検出器を取付けるのである。この場合、全体とし
ては３本のローラに１本のローラの割合で該当するロー
ラの駆動モータに速度検出器を取付けることになる。こ
のように速度検出器を取付けると、各ローラの駆動モー
タにそれぞれ速度検出器を取付けなくても、実際に液熱
物が移載されているローラの結局は回転速度を検出する
ことができる。実際に液熱物が移載されているローラと
液熱物が移載されていないローラとでは、双方のローラ
の駆動モータに同じ人力を加えても、双方のローラの負
荷が異なるため、実際に被熱物が移載されているり−ラ
の方がその回転数は低くなってしまう０本発明では、速
度検出器で検出された検出速度のうちで最低速度すなわ
ち実際に被熱物が移載されているローラの結局は回転速
度をローセレクタにより選択するのである。In addition, an important point in the present invention is that a speed detector is attached to the drive motor of the corresponding roller at a maximum integral number of roller intervals satisfying Expression 11j (1) for each valley group, and a yield speed detector is attached to the drive motor of the roller. For example, if the length of the liquid hot material in the transport direction is 6.3 m and the roller pitch is 1.8 m, n is 2. .5 or less, speed detectors are attached to the drive motors of the corresponding rollers at maximum integer intervals that satisfy 25 or less, that is, at intervals of two. In this case, a speed detector is attached to the drive motor of one roller for every three rollers as a whole. By attaching the speed detector in this manner, it is possible to detect the rotational speed of the roller on which the liquid heat material is actually being transferred, without having to attach a speed detector to the drive motor of each roller. Even if the same human power is applied to the drive motors of both rollers, the load on both rollers is different between the roller to which the liquid heat material is actually transferred and the roller to which the liquid heat material is not transferred. In the present invention, the number of rotations is lower when the object to be heated is transferred to the The rotational speed of the mounted rollers is ultimately selected by a low selector.
更に本発明において肝要な点は、各群毎に、ローセレク
タで選択された最低速度と設定速度との間の速度差に相
当する信号なＶＶＶＦ装置へとフィードバックする処に
ある。実際に液熱物が移載されているローラの結局は回
転速度とその設定速度との間の差を修正するために、各
ローラに取付けられている駆動モータへ加える入力をＶ
ＶＶＦ装：ｔｔを介して調節し、実際に液熱物が移載さ
れているローラも含めてその群に属する全てのローラの
結局は回転速度を設定速度に合致させるのである。Furthermore, an important point in the present invention is that a signal corresponding to the speed difference between the lowest speed selected by the low selector and the set speed is fed back to the VVVF device for each group. In order to correct the difference between the eventual rotational speed of the roller to which the liquid heat material is actually being transferred and its set speed, the input to the drive motor attached to each roller is applied to V.
The rotational speed of all the rollers belonging to the group, including the roller to which the liquid heat material is actually transferred, is adjusted through the VVF system: tt, so that the rotational speed of all the rollers belonging to the group eventually matches the set speed.
本発明に係る搬送速度制御機構は、所定のローラ間隔で
該！！１−ｑるローラに速度検出器が取付けられており
、また〜っのローラ群に−っのローセレクタ及び−っの
ＶＶＶＦ装置が装備されているものであるため、各ロー
ラの回転速度を個別に’１１４ｉｌｌする前述したよう
な従来の搬送速度制御機構と比へ、全体として機構が簡
略であり、また取扱いも容易で、更に安価である。そし
て本発明に係る搬送速度制御機構は、実際に液熱物が移
載されているローラの結局は回転速度を設定速度に合撃
させるものであるため、前述したような従来の搬送速度
制御機構と同様の制御精度をｊフることができる。The conveyance speed control mechanism according to the present invention is capable of controlling the speed at a predetermined roller interval. ! A speed detector is attached to the roller 1-q, and the roller group ~ is equipped with the low selector and VVVF device, so the rotational speed of each roller can be determined individually. Compared to the conventional transport speed control mechanism as described above, the mechanism as a whole is simpler, easier to handle, and cheaper. The conveyance speed control mechanism according to the present invention is intended to eventually adjust the rotational speed of the roller on which the liquid heat material is actually transferred to the set speed, so it is different from the conventional conveyance speed control mechanism as described above. It is possible to achieve the same control accuracy as .
以下、図面に基づいて本発明の構成を更に詳細に説明す
る。Hereinafter, the configuration of the present invention will be explained in more detail based on the drawings.
〈実施例〉
第１図は本発明の一実施例を略示する要部系統図である
。ローラハース式加熱炉におけるローラ１１〜１８で液
熱物へが図中の右方から左りへと搬送されており、図面
の場合には合計８本のローラｌｌ−１８が一つの群とし
て区分されている。<Embodiment> FIG. 1 is a system diagram of essential parts schematically showing an embodiment of the present invention. In the roller hearth type heating furnace, rollers 11 to 18 transport the liquid heat material from right to left in the figure, and in the case of the figure, a total of eight rollers ll-18 are divided into one group. ing.
図示を省略するが、ローラ１１の左方にも、またローラ
１８（７Ｍ：ｉ力にも、同様に多数本のローラが’Ａ
ｔＱされており、これらのローラも図面の場合と同様、
適宜複数の群に区分されている。Although not shown, there are many rollers on the left side of the roller 11 and on the roller 18 (7M:i force) as well.
tQ, and these rollers are also the same as in the drawing.
It is divided into multiple groups as appropriate.
ローラ１１−１８にはそれぞれ駆動モータ２１〜２８が
連結されており、駆動モータ２１．２４．２７にはそれ
ぞれ速度検出器３１．３２．３３が取付けられている。Drive motors 21-28 are connected to the rollers 11-18, respectively, and a speed detector 31, 32, 33 is attached to each of the drive motors 21, 24, 27.
１ｉｉｊ記式（１）のｎを充足する最大整数本のロー
ラ間隔で、図面の場合には２本のローラ間隔で、したが
って３本のローラに１本のローラの割合で、該当するロ
ーラ１１，１４．１７の駆動モータ２１．２４．２７に
速度検出器３１．３２．３３が取付けられているのであ
る。1iij The maximum integral number of rollers that satisfy n in the notation (1), in the case of the drawing, the distance between two rollers, so the ratio of one roller to every three rollers, the corresponding roller 11, The speed detector 31.32.33 is attached to the drive motor 21.24.27 of 14.17.
速度検出器３１．３２．３３はローセレクタ４１へと、
またローセレクタ４１はＶＶＶＦ装置５１へと、更にＶ
ＶＶＦ装置５１は各ローラ１１〜１８の駆動モータ２１
〜２８へとそれぞれ接続さｎている。Speed detector 31, 32, 33 to low selector 41,
Further, the low selector 41 is further connected to the VVVF device 51,
The VVF device 51 includes a drive motor 21 for each roller 11 to 18.
~28, respectively.
被熱物Ａはローラ１８からローラ１１へと順次移載され
つつ搬送されるが、この間、ローラ１７、ローラ１４又
はローラ１１のうちで少なくともいずれか１本のローラ
に移載されている状態となる。ローセレクタ４１には速
度検出器３１〜３３により検出された検出速度が人力さ
れるが、ローセレクタ４１において、これらの検出速度
のうちで最低速度、重連したように図面の場合には実際
に被熱物Ａが移載されているローラ１７との関係で速度
検出器３３により検出された検出速度が選択される。そ
して、選択された最低速度と設定速度との間の速度差に
相当する信号がＶ Ｖ Ｖ ｌ”装置５１へとフィード
バックされ、ＶＶＶＦ装置５１を介し駆動モータ２！〜
２７へ加えられる人力ｈ１調節されて、ローラー１〜１
８の結局は回転速度が設定速度に制御される構成である
。以下はこの繰り返しである。The heated object A is conveyed while being sequentially transferred from the roller 18 to the roller 11. During this time, the heated object A is transferred to at least one of the rollers 17, 14, and 11. Become. The detected speeds detected by the speed detectors 31 to 33 are input manually to the low selector 41, and the lowest speed among these detected speeds is actually inputted in the drawings as shown in the diagram. The detected speed detected by the speed detector 33 is selected in relation to the roller 17 on which the object to be heated A is being transferred. Then, a signal corresponding to the speed difference between the selected minimum speed and the set speed is fed back to the VVVl" device 51, and is passed through the VVVF device 51 to the drive motor 2!~
The human power h1 applied to 27 is adjusted to the rollers 1-1.
8 is a configuration in which the rotational speed is controlled to a set speed. This is repeated below.
〈効果〉
既に明らかなように、以上説明した不発明番こけ、搬送
速度の制ｉ！ＩＩ精度を高度に維持し−）つ、全体とし
て制ｉＪ１機構を簡略にし、またその取扱１７Ｘを容易
にして、更に安価にすることができるとし）う効＼、
果がある。<Effects> As is already clear, the above-mentioned inventive features and conveyance speed control i! This has the effect of maintaining a high level of accuracy, simplifying the control mechanism as a whole, making it easier to handle, and making it cheaper.
第１図は本発明の一実施例を略示する要部系統図である
。
１１〜１８・・・・ローラ、 ２１〜２８・・・・駆
動モータ３１〜３３・・・・速度検出器、 ４１・・・
・ローセレクタ５！・・・・ＶＶＶＦ装置
特許出願人 大同特殊鋼株式会社
代理人 弁理士 人 山 宏 ＩＦ
第１図FIG. 1 is a system diagram of essential parts schematically showing an embodiment of the present invention. 11-18...Rollers, 21-28...Drive motors 31-33...Speed detectors, 41...
・Low selector 5! ... VVVF device patent applicant Daido Steel Co., Ltd. agent Patent attorney Hito Yama Hiroshi IF Figure 1
Claims (1)
区分して各群毎でローラの回転速度を調節することによ
り被熱物の搬送速度を制御する機構であって、各群毎に
、下記式（１）のｎを充足する最大整数本のローラ間隔
で該当するローラの駆動モータに速度検出器が取付けら
れており、該速度検出器はローセレクタへと、また該ロ
ーセレクタはＶＶＶＦ装置へと、更に該ＶＶＶＦ装置は
各ローラの駆動モータへとそれぞれ接続されていて、該
ローセレクタで選択された最低速度と設定速度との間の
速度差に相当する信号をＶＶＶＦ装置へとフィードバッ
クするように構成してなる搬送速度制御機構。 式（１）：ｎ≦（被熱物の搬送方向の長さ／ローラピッ
チ）−１[Scope of Claims] 1. A mechanism for controlling the conveyance speed of the object to be heated by dividing the rollers in a roller hearth type heating furnace into a plurality of groups and adjusting the rotational speed of the rollers for each group. For each group, speed detectors are attached to the drive motors of the corresponding rollers at intervals of the maximum integer number of rollers that satisfy n in the following formula (1), and the speed detectors are connected to the low selector and to the low selector. The selector is connected to the VVVF device, which in turn is connected to the drive motor of each roller, and sends a signal corresponding to the speed difference between the lowest speed selected by the low selector and the set speed to the VVVF device. A conveyance speed control mechanism configured to feed back to. Formula (1): n≦(length of heated object in conveying direction/roller pitch) -1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12734589A JP2913665B2 (en) | 1989-05-20 | 1989-05-20 | Transfer speed control mechanism in roller hearth heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12734589A JP2913665B2 (en) | 1989-05-20 | 1989-05-20 | Transfer speed control mechanism in roller hearth heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02306091A true JPH02306091A (en) | 1990-12-19 |
| JP2913665B2 JP2913665B2 (en) | 1999-06-28 |
Family
ID=14957631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12734589A Expired - Lifetime JP2913665B2 (en) | 1989-05-20 | 1989-05-20 | Transfer speed control mechanism in roller hearth heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2913665B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100742878B1 (en) * | 2001-11-28 | 2007-07-25 | 주식회사 포스코 | Method for controlling entrance interval and entrance velocity according to thickness of a plate in heat treatment furnace |
| JP2012024671A (en) * | 2010-07-21 | 2012-02-09 | Sumitomo Heavy Ind Ltd | Coating system |
| CN113644858A (en) * | 2021-08-12 | 2021-11-12 | 佛山市科达机电有限公司 | Firing period control method for roller kiln |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3173374U (en) * | 2011-11-22 | 2012-02-02 | 日本碍子株式会社 | Laura Heartilkin |
-
1989
- 1989-05-20 JP JP12734589A patent/JP2913665B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100742878B1 (en) * | 2001-11-28 | 2007-07-25 | 주식회사 포스코 | Method for controlling entrance interval and entrance velocity according to thickness of a plate in heat treatment furnace |
| JP2012024671A (en) * | 2010-07-21 | 2012-02-09 | Sumitomo Heavy Ind Ltd | Coating system |
| CN113644858A (en) * | 2021-08-12 | 2021-11-12 | 佛山市科达机电有限公司 | Firing period control method for roller kiln |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2913665B2 (en) | 1999-06-28 |
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