JPS593207A - Method for measuring length of long material - Google Patents

Method for measuring length of long material

Info

Publication number
JPS593207A
JPS593207A JP11231582A JP11231582A JPS593207A JP S593207 A JPS593207 A JP S593207A JP 11231582 A JP11231582 A JP 11231582A JP 11231582 A JP11231582 A JP 11231582A JP S593207 A JPS593207 A JP S593207A
Authority
JP
Japan
Prior art keywords
length
long material
sensor
detection sensor
pulse generator
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.)
Pending
Application number
JP11231582A
Other languages
Japanese (ja)
Inventor
Takayoshi Kawano
川野 孝良
Kiyoshi Okumura
奥村 精
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP11231582A priority Critical patent/JPS593207A/en
Publication of JPS593207A publication Critical patent/JPS593207A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/06Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE:To measure the length of a long material highly accurately, by obtaining the number of pulses which are generated during the time the tip of the long material passes through a reference length, thereby removing the effects of the change in outer diameter of the long material, abrasion of rollers, and the like. CONSTITUTION:A long material 3 is supported by a pulurality of conveyer rollers 1 and sent to a longitudinal direction. A measuring pulse generator 2 is attached to the conveyer rollers 1, and a plurality of fixed length detecting sensors 4-8 are arranged along the conveying line. A reference length sensor 14 is arranged at a distance separated by a reference length l0 from the sensor 4 in front of it. A fixed length l2 of the long material 3 is obtained by the sensor 6 at the timing when a tip 3a of the long material 3 passes the sensor 4. The number of pulses N1 from the pulse generator 2 until a rear end 3b of the long material 3 passes throgh the sensor 6 is counted. The number of pulses n0 during the period the tip 3a of the long material 3 passes the part between the sensors 4 and 14 is obtained. Then the total length L of the long material 3 is computed by an expression L=l2+N1l0/n0. In this way, the length of the long material 3 is measured highly accurately.

Description

【発明の詳細な説明】 本発明は管棒材などの長尺材の全長を該長尺材を投手方
向に移動させながら測定する長尺材測長方法に1児する
DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a method for measuring the length of a long material, such as a tube or rod, in which the entire length of the long material is measured while moving the long material in a pitching direction.

従来、搬送コンベアによって長手方向に搬送される鋼管
等の長尺材の全長を測定する方法として、搬送ローラに
取り付けた測長パルス発生器と長尺材の固定長を検出す
る複数個の検出器とを用い、前記測長パルス発生誂のパ
ルス数をカウントして前記固定長部分以外の残余部の長
さを求め、固定長と残糸長とを加えて長尺材の全長を求
める方法がある。こnを第1図ケ参照して説明する。長
尺 2− 材3の搬送ライン上に複数個の搬送ローラlを配置し、
この各搬送ローラを駆動モータ9によって減速機10.
複数個の伝達ギア11およびこれらを連結する伝動軸1
2會介して回転駆動し、これによって長尺材3を矢印方
向へ搬送していく。搬送ローラlに測長パルス発生器2
を取ね付け、また搬送ラインに沿って複数個の固定長検
出用のセンサ例えば光電スイッチ4,5,6.7.8i
規定間隔で配置する。これらの光電スイッチは長尺材3
の固定長t1〜t4を検出するためのものである。
Conventionally, a method for measuring the total length of a long material such as a steel pipe that is conveyed in the longitudinal direction by a conveyor uses a length measurement pulse generator attached to a conveyance roller and multiple detectors that detect the fixed length of the long material. There is a method of calculating the length of the remaining part other than the fixed length part by counting the number of pulses generated by the length measurement pulse, and adding the fixed length and the remaining thread length to find the total length of the long material. be. This will be explained with reference to FIG. A plurality of conveyance rollers l are arranged on the conveyance line of the long 2-material 3,
Each conveying roller is moved by a drive motor 9 to a reducer 10.
A plurality of transmission gears 11 and a transmission shaft 1 connecting these gears
The long material 3 is thereby conveyed in the direction of the arrow. Length measurement pulse generator 2 on conveyor roller l
and a plurality of fixed length detection sensors such as photoelectric switches 4, 5, 6, 7, 8i along the conveyor line.
Arrange at regular intervals. These photoelectric switches are made of long material 3
This is for detecting the fixed lengths t1 to t4.

図示の状態において、長尺材3が図の矢印方向に移動し
て長尺材3の先端が進行方向前方位#iiにあるセンサ
4を1…過したときのタイミングで他のセンサ5.6が
長尺材3を成田しており、かつこの検出中のセンサのう
ちセンサ4から最も位置の離れたセンサ6を制御ユニッ
トrCより自動選択してそのrI!JI定長ムをボめる
とともに、前述と同じタイミングで長尺物3の後端がセ
ンサ6を通過するまでのtllll−&パルス発生器2
の発生パルス数Nをカラン) L、(1)式により長尺
拐3の全長L k J4−出する。
In the illustrated state, when the long material 3 moves in the direction of the arrow in the figure and the tip of the long material 3 passes the sensor 4 located at the forward position #ii in the traveling direction, the other sensors 5.6 is detecting the long material 3, and among the sensors currently being detected, the sensor 6 that is farthest from the sensor 4 is automatically selected by the control unit rC, and the rI! tllll-& pulse generator 2 until the rear end of the long object 3 passes the sensor 6 at the same timing as mentioned above.
The number of generated pulses N is calculated as L, and the total length of the long wire 3 is determined by equation (1).

L=tz+T)−N・・・・・・(1)ここでpは測長
パルス発生器2の1パルス当りの長尺材移動長さである
。従来、このpを求めるのに、搬送ローラ1の周長卦よ
び回転数を基準にしていた。即ち曲送ローラlの長尺材
3と接する部分の周長をtR1測長パルス発生器2の搬
送ローラ1回転当りのパルス数をNOとして、p = 
tI< / No・・・・・・(2)から求めている。
L=tz+T)-N (1) where p is the moving length of the long material per one pulse of the length measurement pulse generator 2. Conventionally, in order to obtain this p, the circumferential length and rotation speed of the conveying roller 1 have been used as a reference. That is, the circumferential length of the part of the curved feed roller l in contact with the long material 3 is tR1, the number of pulses per one rotation of the conveyance roller of the length measuring pulse generator 2 is set as NO, and p=
tI< / No... It is determined from (2).

しかしこのような搬送ローラの周長を基準にとる方法で
は、第2図の符号3.3′で示す如<、V形搬送ローラ
I上を搬送される長尺材の外径が異ると、搬送ローラl
と長尺拐3,3′との接触点13 、 + 3’が異り
、結果として接触部分のロー2周長tRが変化する。し
たがって従来のこの方法では長尺材の外径が変るごとに
pを計算するか、あるいは外径毎のpの値をテーブル化
しておき% 6i11長ずべき長尺毎にこれを選択して
使用しなければならないという不便があり、搬送ローラ
lが摩耗することVCよっても周長LRが変化するので
、このpを定1υ(的yc補正して全長6111定値り
の測定誤差が大きくなるのを防止する必要があった。 
・本発明は、6+11長パルス発生器の1パルス当妙の
長尺材移動長を搬送ローラの周長から求めずに搬送ライ
ン上で直接求めることPcより、長尺材の外径変化ある
いはローラ摩耗の影響を排し、精度向上を図った長尺材
長さ測定方法を提供することを目的とする。
However, in this method of taking the circumferential length of the conveying roller as a reference, as shown by reference numeral 3.3' in FIG. , conveyance roller l
The contact points 13 and +3' between the long strips 3 and 3' are different, and as a result, the row 2 circumferential length tR of the contact portion changes. Therefore, in this conventional method, p is calculated each time the outer diameter of the long material changes, or the value of p for each outer diameter is made into a table and this value is selected and used for each long material that should be longer. There is the inconvenience of having to do this, and since the circumferential length LR changes due to wear of the conveying roller l and VC, we corrected this p to a constant value of 1υ (target yc) to prevent the measurement error of the total length from increasing at a constant value of 6111. It was necessary to prevent it.
・The present invention calculates the moving length of the long material corresponding to one pulse of the 6+11 long pulse generator directly on the conveyance line without determining it from the circumference of the conveyance roller. The purpose of the present invention is to provide a method for measuring the length of long materials that eliminates the influence of wear and improves accuracy.

本発明の要旨は、鋼管の固定長を検出するセンサに加え
てさらに基準長を測定するセンサを鋼管の移動ラインに
沿って配置し、前記鋼管がこの基準長りを移動する間に
発生する測長パルス発生器の基準パルス数noをカウン
トし、この基準長toと基準パルス数noとから前記測
長パルス発生器の1パルス数当りの鋼管の移動長poを
算出し、固定長以外の残余部が特定点(センサ位tX>
を通過するまでの前記副長パルス発生器のパルス数N1
を計測し、前記固定長に前記残余部の長さI)O’Nl
を加えて鋼管の全長を測定するようにしたものである。
The gist of the present invention is to arrange a sensor that measures a reference length in addition to a sensor that detects a fixed length of a steel pipe along a movement line of the steel pipe, and to measure the amount of data generated while the steel pipe moves through this reference length. The reference pulse number no of the long pulse generator is counted, and the moving length po of the steel pipe per one pulse number of the length measurement pulse generator is calculated from this reference length to and the reference pulse number no, and the remaining length other than the fixed length is calculated. Part is the specific point (sensor position tX>
The number of pulses N1 of the sub-length pulse generator until passing through
, and add the remaining length I) O'Nl to the fixed length.
is added to measure the total length of the steel pipe.

以下、本発明を、図面を参照しながら、実施例について
説明する、。
Hereinafter, the present invention will be described with reference to the drawings.

第3図は本発明を実施する場合の長尺材測長装置を置略
的に示したものである。なお、被測長材である鋼管等の
長尺材を移動させる駆動装置、減速機あるいは伝動歯車
機構はこの図には図示していないが、これらは第1図で
説明i〜だものと同様の構成でよい。長尺材3は複数個
の搬送ローラlに担持されて長手方向に送られる。第1
図の場合と同様に搬送ローラ1に測長パルス発生器2を
取り付け、複数個の固定長検出用センサ4.5.6.7
.8が搬送ラインに沿って設叶である。捷たこの実施例
ではセンサの進行方向前方に基準長ムの距離で基準長検
出用センサ14が配置しである。
FIG. 3 schematically shows a long material length measuring device for carrying out the present invention. Note that the drive device, speed reducer, or transmission gear mechanism for moving the long material such as steel pipe, which is the material to be measured, is not shown in this figure, but these are the same as those explained in Figure 1. The following configuration is sufficient. The elongated material 3 is carried by a plurality of conveyance rollers 1 and conveyed in the longitudinal direction. 1st
As in the case shown in the figure, a length measurement pulse generator 2 is attached to the conveyance roller 1, and a plurality of fixed length detection sensors 4.5.6.7
.. 8 is the construction along the conveyance line. In this embodiment, a reference length detection sensor 14 is disposed at a distance of the reference length in front of the sensor in the traveling direction.

長尺材3の先端3aが最先の固定長検出用センサ4を通
過したタイミングで長尺材3を検出していル他+7)固
定長検出用センサ516のうち、−ヒンサ4から最も距
離の離れたセンサ6を制御ユニットによって自動選択し
て該長尺材の固足長りを求めるとと本に、長尺材3の後
端3bがセンサ6を通過するまでの測長パルス発生′a
2のバ# ス数Nt fカウントする。捷た長尺材3の
先端3aがセンサ4を通過したときから基準長検出用セ
ンサ14を通過するまで、即ち長尺材3が基準長ムを移
動する間の、副長パルス発生器2のパルス数noをカウ
ントする。測長パルス発生器2の1パルス当りの長さp
oは、 t。
The long material 3 is detected at the timing when the tip 3a of the long material 3 passes the first fixed length detection sensor 4. When the remote sensor 6 is automatically selected by the control unit to determine the fixed length of the long material, the length measurement pulse 'a' is generated until the rear end 3b of the long material 3 passes the sensor 6.
2. Count the number of buses Nt f. Pulses of the sub-length pulse generator 2 from when the tip 3a of the cut long material 3 passes the sensor 4 until it passes the reference length detection sensor 14, that is, while the long material 3 is moving over the reference length. Count the number no. Length p per pulse of length measurement pulse generator 2
o is t.

po=−・・・・・・(3) n。po=-・・・・・・(3) n.

で求められる、これにまり長尺材3の固定長72部分以
外の残余部の長さけpo−N1となるから、結局長尺材
3の全長りは L = 12+po′Nt −−(4)で求められる。
Based on this, the length of the remaining part of the long material 3 other than the fixed length 72 portion becomes po-N1, so the total length of the long material 3 is L = 12 + po'Nt -- (4) Desired.

このように本発明では%基準長ムを長尺材3の先端が通
過する間のパルス発生数noを求めることrCよシ、搬
送ローラに取り付けた測長パルス発生器2の1パルス当
りの移動長Poを直接的にかつ自動的に求めることがで
きる。このため従来のようVCvC−ローラl上送され
る鋼管の外径が異ることによるVローラlと鋼管との接
触点の変化、あるいはVローラ面の摩耗等によるVロー
2周長tRの変化等の影響を受けることがなく、測定誤
差が小さくしかも畏期にわたって精度維持が可能な測定
方法がイ!トられる。
In this way, in the present invention, the number of pulses generated during the time when the tip of the long material 3 passes through the % standard length is determined by rC, and the movement per pulse of the length measuring pulse generator 2 attached to the conveying roller is calculated. The length Po can be determined directly and automatically. Therefore, unlike the conventional method, the contact point between the V roller l and the steel pipe changes due to a difference in the outer diameter of the steel pipe being fed over the VCvC roller l, or the V row 2 circumferential length tR changes due to wear of the V roller surface, etc. There is a measurement method that is not affected by such factors, has small measurement errors, and can maintain accuracy over a long period of time! be hit.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来の長尺材副長方法を実施する場合の測長装
置の概略的な平面図、第2図はVローラと長尺材(鋼管
)との接触点の変化を説明するための図、第3図は本発
明に係る方法を実Mjする場合の副長装置の概略的な平
面図である。 1・・・搬送ローラ(Vローラ)、 2・・・副長パルス発生器、  3・・・−長尺材、4
〜8・−・固定長検出用センサ、 9・・・駆動モータ、 14・・・基準長検出用センサ。 代理人 弁理士 染 川 利 吉
Fig. 1 is a schematic plan view of a length measuring device when implementing the conventional long material sub-length method, and Fig. 2 is a schematic plan view for explaining changes in the contact point between the V roller and the long material (steel pipe). 3A and 3B are schematic plan views of a sub-length device for carrying out the method according to the present invention. 1...Conveyance roller (V roller), 2...Sub-length pulse generator, 3...-long material, 4
~8... Fixed length detection sensor, 9... Drive motor, 14... Reference length detection sensor. Agent Patent Attorney Toshiyoshi Somekawa

Claims (2)

【特許請求の範囲】[Claims] (1)長尺材全搬送ローラによって長手方向に移動させ
ながら核長尺材の全長を測定する長さ測定方法において
、前Qr、’r搬送ローラに測長パルス発生器を取り付
け、複数個の固定長検出用センサおよび基準長検出用セ
ンサを411i出ラインに沿って配置し、前記長尺材の
基準長移動を前記基準長検出用センナで検出して前記測
長パルス発生器の1パルス当りの移動長を求め、前記長
尺材の固定長lユ外の残余部の移動を前記固定長検出用
センサで検出し、その間のパルス数をカウントして残余
部長さを求めることを特徴とする長尺材の長さ測定方法
(1) In a length measurement method in which the total length of a core long material is measured while being moved in the longitudinal direction by a long material full conveyance roller, a length measurement pulse generator is attached to the front Qr and 'r conveyance rollers, and multiple A fixed length detection sensor and a reference length detection sensor are arranged along the 411i output line, and the reference length movement of the long material is detected by the reference length detection sensor, and the length measurement pulse generator detects the reference length movement per pulse of the length measurement pulse generator. The length of the remaining portion of the long material outside the fixed length is detected by the fixed length detection sensor, and the number of pulses during that time is counted to determine the length of the remaining portion. How to measure the length of long materials.
(2)  前記基準長憤出用センサを長尺材進行方向最
先位置の固定長検出用センサの前方VC設け、長尺材の
先端が前記最先位置の固定長検出用セン−9−全通過(
〜たタイミングで前記長尺材を検出中の他の固定長検出
用センサを迷走するとともに測長パー1−      
      。0 ルス発生器のパルス数をカウントし、かつ前記タイミン
グで前記長尺材の先端が前記基準長検出用センナを通過
するまでのパルス数からlパルス当りの移動長を求め、
これを用いて前記長尺材の後端が前記の選定固足長検出
用センサを通過するまでのパルス数から前記残余部の長
さを求めることを特徴とする特許請求の範囲第1項に記
載した長尺材の長さ測定方法。
(2) The sensor for detecting the reference length is provided in front of the sensor for detecting the fixed length at the foremost position in the traveling direction of the long material, and the tip of the long material is installed at the sensor for detecting the fixed length at the foremost position. Passing (
At the same time, the other fixed length detection sensor that was detecting the long material went astray, and the length measurement par 1-
. 0 counting the number of pulses of the pulse generator, and determining the moving length per 1 pulse from the number of pulses until the tip of the long material passes the reference length detection sensor at the timing,
According to claim 1, the length of the remaining portion is determined from the number of pulses until the rear end of the elongated material passes the selected fixed leg length detection sensor using this method. Method for measuring the length of long materials as described.
JP11231582A 1982-06-29 1982-06-29 Method for measuring length of long material Pending JPS593207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11231582A JPS593207A (en) 1982-06-29 1982-06-29 Method for measuring length of long material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11231582A JPS593207A (en) 1982-06-29 1982-06-29 Method for measuring length of long material

Publications (1)

Publication Number Publication Date
JPS593207A true JPS593207A (en) 1984-01-09

Family

ID=14583589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11231582A Pending JPS593207A (en) 1982-06-29 1982-06-29 Method for measuring length of long material

Country Status (1)

Country Link
JP (1) JPS593207A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267407A (en) * 1985-09-20 1987-03-27 Fuji Electric Co Ltd System for confirming relative position of sensors
KR100797347B1 (en) * 2001-12-26 2008-01-22 주식회사 포스코 Test method for sensor fail in measuring length of strip
JP2014222214A (en) * 2013-05-14 2014-11-27 株式会社リコー Sheet length measuring device and image forming apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5379570A (en) * 1976-12-24 1978-07-14 Nippon Steel Corp Length measuring method of traveling material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5379570A (en) * 1976-12-24 1978-07-14 Nippon Steel Corp Length measuring method of traveling material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267407A (en) * 1985-09-20 1987-03-27 Fuji Electric Co Ltd System for confirming relative position of sensors
JPH0371047B2 (en) * 1985-09-20 1991-11-11 Fuji Electric Co Ltd
KR100797347B1 (en) * 2001-12-26 2008-01-22 주식회사 포스코 Test method for sensor fail in measuring length of strip
JP2014222214A (en) * 2013-05-14 2014-11-27 株式会社リコー Sheet length measuring device and image forming apparatus

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