JPH11230723A - Cutting defect detection device for strip rubber material - Google Patents
Cutting defect detection device for strip rubber materialInfo
- Publication number
- JPH11230723A JPH11230723A JP10036091A JP3609198A JPH11230723A JP H11230723 A JPH11230723 A JP H11230723A JP 10036091 A JP10036091 A JP 10036091A JP 3609198 A JP3609198 A JP 3609198A JP H11230723 A JPH11230723 A JP H11230723A
- Authority
- JP
- Japan
- Prior art keywords
- rubber material
- shaped rubber
- band
- cutting
- allowable range
- 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
- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000005520 cutting process Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000007547 defect Effects 0.000 title claims abstract description 16
- 230000002950 deficient Effects 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えばタイヤの製
造工程において、切断された帯状ゴム材料の切断不良を
検出するための帯状ゴム材料の切断不良検出装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting a defective cutting of a rubber band material for detecting a defective cutting of a rubber band material cut in, for example, a tire manufacturing process.
【０００２】[0002]
【従来の技術】一般に、タイヤを製造する場合、例えば
特開平９−２０７２４０号公報に記載されているよう
に、加硫前の帯状のゴム材料を所定の長さに切断した
後、成型ドラムに巻き付けてその両端を接合する工程が
ある。この場合、帯状ゴム材料はコンベアによって長さ
方向に搬送されるとともに、自動カッターにより幅方向
に切断される。2. Description of the Related Art In general, when a tire is manufactured, for example, as described in Japanese Patent Application Laid-Open No. 9-207240, a belt-shaped rubber material before vulcanization is cut into a predetermined length and then cut into a molding drum. There is a step of winding and joining both ends. In this case, the belt-shaped rubber material is transported in the length direction by the conveyor, and is cut in the width direction by the automatic cutter.
【０００３】[0003]
【発明が解決しようとする課題】ところで、前記切断工
程においては、カッターの劣化やカッター駆動装置の不
備等により、帯状ゴム材料の切断面の一部が捲れるなど
の切断不良を生ずる場合がある。しかしながら、タイヤ
の製造工程は自動化されているため、帯状ゴム材料の切
断不良を検出することができず、不良品の発生を未然に
防止することができないという問題点があった。Incidentally, in the cutting step, a cutting defect such as a part of the cut surface of the band-shaped rubber material may be turned up due to the deterioration of the cutter or the defect of the cutter driving device. . However, since the tire manufacturing process is automated, there is a problem in that it is not possible to detect a cutting failure of the belt-shaped rubber material, and it is not possible to prevent the occurrence of defective products.
【０００４】本発明は前記問題点に鑑みてなされたもの
であり、その目的とするところは、帯状ゴム材料の切断
不良を確実に検出することのできる帯状ゴム材料の切断
不良検出装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a device for detecting a defective cutting of a rubber band material, which can reliably detect a defective cutting of the rubber band material. It is in.
【０００５】[0005]
【課題を解決するための手段】本発明は前記目的を達成
するために、請求項１では、幅方向一端側から他端側に
向かって切断された後、長さ方向に一定速度で搬送され
る帯状ゴム材料の切断不良検出装置において、前記帯状
ゴム材料の幅方向に所定間隔をおき、且つ帯状ゴム材料
の搬送方向に対して所定距離だけずらした位置で帯状ゴ
ム材料をそれぞれ検知する複数の検知器と、各検知器の
検知時間差を計測する計時手段と、各検知器の検知時間
差が所定の許容範囲内か否かを判別する判別手段とを備
えている。これにより、切断不良により帯状ゴム材料の
幅方向の端部が変形していると、各検知器の検知時間差
が許容範囲を越え、これが判別手段によって判別され
る。In order to achieve the above object, according to the present invention, after being cut from one end in the width direction to the other end, it is conveyed at a constant speed in the length direction. In the apparatus for detecting a cutting failure of a band-shaped rubber material, a plurality of belt-shaped rubber materials are respectively detected at a predetermined distance in a width direction of the band-shaped rubber material and at a position shifted by a predetermined distance in a conveying direction of the band-shaped rubber material. The detector includes a detector, a timer for measuring a detection time difference between the detectors, and a determination unit for determining whether the detection time difference between the detectors is within a predetermined allowable range. Thus, if the end in the width direction of the belt-shaped rubber material is deformed due to a cutting defect, the detection time difference between the detectors exceeds the allowable range, and this is determined by the determination unit.
【０００６】また、請求項２では、請求項１記載の帯状
ゴム材料の切断不良検出装置において、前記各検知器の
検知時間差を計測時ごとに記憶し、その平均値に基づい
て前記許容範囲を補正するデータ処理手段を備えてい
る。これにより、請求項１の作用に加え、検知時間差の
計測データがデータ処理手段によって記憶され、その平
均値に基づいて所定の計測回数ごとに許容範囲が補正さ
れることから、許容範囲の値を常に適正にすることがで
きる。According to a second aspect of the present invention, in the apparatus for detecting a defective cutting of a band-shaped rubber material according to the first aspect, a detection time difference between the detectors is stored for each measurement, and the allowable range is determined based on an average value thereof. It has a data processing means for correcting. Thereby, in addition to the effect of claim 1, the measurement data of the detection time difference is stored by the data processing means, and the allowable range is corrected every predetermined number of times of measurement based on the average value. It can always be appropriate.
【０００７】[0007]
【発明の実施の形態】図１乃至図４は本発明の一実施形
態を示すもので、図１は切断不良検出装置の平面図、図
２はその側面図、図３はその構成図、図４はその平面図
である。1 to 4 show an embodiment of the present invention. FIG. 1 is a plan view of a cutting defect detecting device, FIG. 2 is a side view thereof, and FIG. FIG. 4 is a plan view thereof.
【０００８】この切断不良検出装置は、帯状ゴム材料Ａ
をそれぞれ検知する第１センサ１及び第２センサ２と、
一定の基準周波数を発振する発振器３と、発振器３の基
準周波数に基づいて各センサ１，２の検知時間差を計測
するカウンタ４と、各センサ１，２の検知時間差が所定
の許容範囲内か否かを判別する判別回路５と、検知時間
差の許容範囲を補正するデータ処理部６とから構成され
ている。[0008] This cutting failure detecting device is a belt-like rubber material A
A first sensor 1 and a second sensor 2 that respectively detect
An oscillator 3 that oscillates a fixed reference frequency, a counter 4 that measures a detection time difference between the sensors 1 and 2 based on the reference frequency of the oscillator 3, and whether the detection time difference between the sensors 1 and 2 is within a predetermined allowable range. It comprises a determination circuit 5 for determining whether or not the data is detected, and a data processing unit 6 for correcting an allowable range of the detection time difference.
【０００９】第１センサ１及び第２センサ２はＰＳＤ等
の周知の光センサからなり、帯状ゴム材料Ａを長さ方向
に搬送するコンベア７の上方に設けられている。第１セ
ンサ１は帯状ゴム材料Ａの幅方向中央に、第２センサ２
は帯状ゴム材料Ａの幅方向一端側にそれぞれ配置され、
互いに幅方向に距離Ｌ1 だけ間隔を有している。また、
各センサ１，２は互いに帯状ゴム材料Ａの搬送方向に距
離Ｌ2 だけずらして配置されている。The first sensor 1 and the second sensor 2 are composed of a known optical sensor such as a PSD, and are provided above a conveyor 7 which transports the belt-shaped rubber material A in the longitudinal direction. The first sensor 1 is provided at the center in the width direction of the belt-shaped rubber material A, and the second sensor 2
Are arranged on one end side in the width direction of the belt-shaped rubber material A, respectively.
They are spaced from each other by a distance L1 in the width direction. Also,
The sensors 1 and 2 are arranged at a distance L2 from each other in the conveying direction of the belt-shaped rubber material A.
【００１０】発振器３及びカウンタ４は計時手段を構成
し、発振器３の基準周波数をカウンタ４で計数すること
により、時間を計測するようになっている。The oscillator 3 and the counter 4 constitute time measuring means, and the time is measured by counting the reference frequency of the oscillator 3 by the counter 4.
【００１１】判別回路５は各センサ１，２に接続され、
発振器３及びカウンタ４によって計測された各センサ
１，２の検知時間差が所定の許容範囲内か否かを判別す
るようになっている。また、判別回路５は警報ブザー８
及び本体側制御部９に接続され、各センサ１，２の検知
時間差が許容範囲を越えた場合、警報ブザー８を作動す
るとともに、本体側制御部９に対してコンベア７等の関
連装置の停止要求を行うようになっている。A determination circuit 5 is connected to each of the sensors 1 and 2,
It is determined whether or not the detection time difference between the sensors 1 and 2 measured by the oscillator 3 and the counter 4 is within a predetermined allowable range. The discriminating circuit 5 includes an alarm buzzer 8
When the detection time difference between the sensors 1 and 2 exceeds the allowable range, the alarm buzzer 8 is activated, and the controller 7 stops the related devices such as the conveyor 7. Make a request.
【００１２】データ処理部６は各センサ１，２の検知時
間差を計測時ごとに所定の計測回数分だけ記憶し、その
平均値に基づいて前記許容範囲を補正するようになって
いる。即ち、許容範囲の値は検知時間差の平均値にプラ
ス側及びマイナス側の若干の余裕を加えたものとし、所
定の計測回数分ごとにデータの平均値を算出して許容範
囲の値を更新するようになっている。この場合、許容範
囲を越えたデータは平均値の算出対象としない方が望ま
しい。The data processing section 6 stores the detection time difference of each of the sensors 1 and 2 for a predetermined number of times of measurement each time measurement is performed, and corrects the allowable range based on the average value. That is, the value of the allowable range is obtained by adding a margin on the plus side and the minus side to the average value of the detection time difference, and the average value of the data is calculated every predetermined number of times of measurement, and the value of the allowable range is updated. It has become. In this case, it is desirable that data exceeding the allowable range is not included in the calculation of the average value.
【００１３】以上のように構成された切断不良検出装置
においては、図示しない切断装置によって切断された帯
状ゴム材料Ａがコンベア７によって一定速度で搬送さ
れ、帯状ゴム材料Ａの先端（切断面）が各センサ１，２
によって検知される。この場合、帯状ゴム材料Ａの幅方
向中央部が第１センサ１によって検知されてから幅方向
一端側が第２センサ２により検知されるまでの時間が発
振器３及びカウンタ４によって計測され、その検知時間
差が許容範囲内か否かが判別回路５によって判別され
る。即ち、コンベア７の搬送速度は一定であるから、帯
状ゴム材料Ａの先端がほぼ均一な直線状に切断されてい
る場合、各センサ１，２の検知時間差もほぼ一定とな
り、この検知時間差を基準に許容範囲が設定される。こ
こで、図４に示すように帯状ゴム材料Ａの端部に帯状ゴ
ム材料Ａの長さ方向に変形した切断不良部分Ｂが生じて
いた場合、切断不良部分Ｂは第２センサ２によって検知
されるため、各センサ１，２の検知時間差が長くなり、
これが許容範囲を越えた場合、警報ブザー８が作動する
とともに、コンベア７等の関連装置が停止する。In the cutting defect detecting device configured as described above, the band-shaped rubber material A cut by a cutting device (not shown) is conveyed at a constant speed by the conveyor 7, and the tip (cut surface) of the band-shaped rubber material A is cut. Each sensor 1, 2
Is detected by In this case, the time from when the widthwise central portion of the belt-shaped rubber material A is detected by the first sensor 1 to when one end in the widthwise direction is detected by the second sensor 2 is measured by the oscillator 3 and the counter 4, and the detection time difference Is determined by the determination circuit 5 as to whether or not is within the allowable range. That is, since the conveying speed of the conveyor 7 is constant, if the tip of the belt-shaped rubber material A is cut in a substantially uniform straight line, the detection time difference between the sensors 1 and 2 is also substantially constant. Is set to an allowable range. Here, as shown in FIG. 4, when a defective cutting portion B deformed in the longitudinal direction of the rubber band material A occurs at an end of the rubber band material A, the defective cutting portion B is detected by the second sensor 2. Therefore, the detection time difference between the sensors 1 and 2 becomes longer,
If this exceeds the permissible range, the alarm buzzer 8 operates and the related devices such as the conveyor 7 stop.
【００１４】また、前記検知時間差の計測データはデー
タ処理部６によって記憶され、その平均値に基づいて所
定の計測回数ごとに許容範囲が補正される。The measurement data of the detection time difference is stored by the data processing unit 6, and the allowable range is corrected every predetermined number of measurements based on the average value.
【００１５】このように、本実施形態の切断不良検出装
置によれば、一対のセンサ１，２を帯状ゴム材料Ａの幅
方向に間隔をおき、且つ帯状ゴム材料Ａの搬送方向に対
して所定距離だけずらした位置に設け、各センサ１，２
の検知時間差が所定の許容範囲内か否かを判別するよう
にしたので、切断不良により帯状ゴム材料Ａの幅方向の
端部が変形していると、各センサ１，２の検知時間差が
許容範囲を越え、これが判別回路５によって判別され、
帯状ゴム材料Ａの切断不良を確実に検知することができ
る。また、各センサ１，２の検知時間差を計測時ごとに
記憶し、その平均値に基づいて前記許容範囲を補正する
ようにしたので、例えばコンベア７の搬送速度等、関連
装置の作動条件等が変化した場合でも、許容範囲の値を
常に適正にすることができる。As described above, according to the cutting failure detecting device of the present embodiment, the pair of sensors 1 and 2 are spaced apart from each other in the width direction of the band-shaped rubber material A and at a predetermined distance with respect to the conveying direction of the band-shaped rubber material A. Provided at positions shifted by a distance, each sensor 1, 2
It is determined whether or not the detection time difference is within a predetermined allowable range. Therefore, if the widthwise end of the belt-shaped rubber material A is deformed due to a cutting defect, the detection time difference between the sensors 1 and 2 is allowed. Exceeds the range, which is determined by the determination circuit 5,
Incomplete cutting of the belt-shaped rubber material A can be reliably detected. In addition, the detection time difference between the sensors 1 and 2 is stored for each measurement, and the allowable range is corrected based on the average value. Even if it changes, the value of the allowable range can always be made appropriate.
【００１６】[0016]
【発明の効果】以上説明したように、請求項１の切断不
良検出装置によれば、帯状ゴム材料の切断不良を確実に
検知することができるので、例えば帯状ゴム材料を用い
てタイヤ等を製造する場合、不良品の発生を未然に防止
することができる。As described above, according to the cutting defect detecting device of the first aspect, it is possible to reliably detect a cutting defect of the belt-shaped rubber material. For example, a tire or the like is manufactured using the belt-shaped rubber material. In this case, it is possible to prevent the occurrence of defective products.
【００１７】また、請求項１の切断不良検出装置によれ
ば、請求項２の効果に加え、前記許容範囲の値を常に適
正にすることができるので、検出精度の向上を図ること
ができる。According to the cutting defect detecting device of the first aspect, in addition to the effect of the second aspect, the value of the allowable range can always be made appropriate, so that the detection accuracy can be improved.
【図１】本発明の一実施形態を示す切断不良検出装置の
平面図FIG. 1 is a plan view of a defective cutting detection device according to an embodiment of the present invention.
【図２】切断不良検出装置の側面図FIG. 2 is a side view of a cutting failure detection device.
【図３】切断不良検出装置の構成図FIG. 3 is a configuration diagram of a cutting failure detection device.
【図４】切断不良検出装置の平面図FIG. 4 is a plan view of a cutting defect detection device.
１…第１センサ、２…第２センサ、３…発振器、４…カ
ウンタ、５…判別回路、６…データ処理部、Ａ…帯状ゴ
ム材料。DESCRIPTION OF SYMBOLS 1 ... 1st sensor, 2 ... 2nd sensor, 3 ... Oscillator, 4 ... Counter, 5 ... Discrimination circuit, 6 ... Data processing part, A ... Strip rubber material.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野田 久和 静岡県三島市南二日町８番１号 横浜ゴム 株式会社三島工場内 (72)発明者 吉岡 和博 静岡県三島市南二日町８番１号 横浜ゴム 株式会社三島工場内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisaka Noda 8-1, Minami-Fukamachi, Mishima-shi, Shizuoka Yokohama Rubber Co., Ltd. Mishima Plant (72) Inventor Kazuhiro Yoshioka 8 Minami-Fujimachi, Mishima-shi, Shizuoka No. 1 Yokohama Rubber Co., Ltd. Mishima Plant
Claims (2)
された後、長さ方向に一定速度で搬送される帯状ゴム材
料の切断不良検出装置において、 前記帯状ゴム材料の幅方向に所定間隔をおき、且つ帯状
ゴム材料の搬送方向に対して所定距離だけずらした位置
で帯状ゴム材料をそれぞれ検知する複数の検知器と、 各検知器の検知時間差を計測する計時手段と、 各検知器の検知時間差が所定の許容範囲内か否かを判別
する判別手段とを備えたことを特徴とする帯状ゴム材料
の切断不良検出装置。An apparatus for detecting a defective cutting of a band-shaped rubber material which is conveyed at a constant speed in a length direction after being cut from one end side in a width direction to the other end side, wherein the predetermined defect is detected in the width direction of the band-shaped rubber material. A plurality of detectors for detecting the band-shaped rubber material at positions spaced apart from each other by a predetermined distance with respect to the conveyance direction of the band-shaped rubber material; a time measuring means for measuring a detection time difference between the detectors; And a determining means for determining whether or not the detection time difference is within a predetermined allowable range.
に記憶し、その平均値に基づいて前記許容範囲を補正す
るデータ処理手段を備えたことを特徴とする請求項１記
載の帯状ゴム材料の切断不良検出装置。2. A band-shaped rubber according to claim 1, further comprising data processing means for storing a detection time difference of each of said detectors at each measurement time, and correcting said allowable range based on an average value thereof. Material cutting failure detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03609198A JP3863278B2 (en) | 1998-02-18 | 1998-02-18 | Device for detecting defective cutting of belt-shaped rubber material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03609198A JP3863278B2 (en) | 1998-02-18 | 1998-02-18 | Device for detecting defective cutting of belt-shaped rubber material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11230723A true JPH11230723A (en) | 1999-08-27 |
| JP3863278B2 JP3863278B2 (en) | 2006-12-27 |
Family
ID=12460092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03609198A Expired - Fee Related JP3863278B2 (en) | 1998-02-18 | 1998-02-18 | Device for detecting defective cutting of belt-shaped rubber material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3863278B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322893A (en) * | 2005-05-20 | 2006-11-30 | Bridgestone Corp | Length control method for strip-like rubber member |
| JP2008001060A (en) * | 2006-06-26 | 2008-01-10 | Yokohama Rubber Co Ltd:The | Molding method and its apparatus of sheet-like part |
| JP2023045542A (en) * | 2021-09-22 | 2023-04-03 | 日本製鉄株式会社 | Outer diameter measuring device, calibration device, and outer diameter measuring method |
-
1998
- 1998-02-18 JP JP03609198A patent/JP3863278B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322893A (en) * | 2005-05-20 | 2006-11-30 | Bridgestone Corp | Length control method for strip-like rubber member |
| JP2008001060A (en) * | 2006-06-26 | 2008-01-10 | Yokohama Rubber Co Ltd:The | Molding method and its apparatus of sheet-like part |
| JP2023045542A (en) * | 2021-09-22 | 2023-04-03 | 日本製鉄株式会社 | Outer diameter measuring device, calibration device, and outer diameter measuring method |
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