JPH05338907A - Printed section inspection method for moving product - Google Patents
Printed section inspection method for moving productInfo
- Publication number
- JPH05338907A JPH05338907A JP4166693A JP16669392A JPH05338907A JP H05338907 A JPH05338907 A JP H05338907A JP 4166693 A JP4166693 A JP 4166693A JP 16669392 A JP16669392 A JP 16669392A JP H05338907 A JPH05338907 A JP H05338907A
- Authority
- JP
- Japan
- Prior art keywords
- section
- product
- inspection
- printing
- video camera
- 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.)
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- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Controlling Sheets Or Webs (AREA)
- Image Input (AREA)
- Image Processing (AREA)
- Image Analysis (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は走行中の製品の印刷部
検査方法とその装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for inspecting a printing section of a running product.
【０００２】[0002]
【従来の技術】量産製品の製造工程の最終段階に、製品
の品名、品種、記号、標識、説明文、製造者名その他を
印刷するか、印刷物を貼る工程と、その検査工程があ
る。その検査方法は、製品が検査位置に来た時、その一
個を抜取って検査するか、短時間停止させて検査する
か、走らせたまゝ目視検査するか、出荷前に抜取り検査
する等、種々の方法がとられている。2. Description of the Related Art At the final stage of the manufacturing process of mass-produced products, there are a process of printing the product name, product type, symbol, sign, description, manufacturer's name, etc., or affixing a printed product, and an inspection process thereof. There are various inspection methods such as when a product comes to the inspection position, one of the products is inspected, the product is stopped for a short time, the product is visually inspected while it is running, or the product is inspected before shipment. The method of is taken.
【０００３】[0003]
【発明が解決しようとする課題】製品自体は良くても、
最終段階で印刷不良やラベルの誤り等が見つかると、不
良品として処分されるから、印刷部検査は重要である。
不良印刷の発見が遅れると大量の不良品が出るから、印
刷又は印刷物貼付の直後に印刷部を検査することが望ま
しい。しかし一般に製品の印刷文字、記号等は小さいた
め、終日、目視検査を続けるのは容易でなく、特に走行
中の製品印刷部を停めずに検査する場合、目の疲労が大
きい。製品の側面、裏面にも印刷部があれば、走行中の
検査は困難である。この発明は高速走行している製品を
停めたり、抜出したりせず、そのまゝ楽に確実に、印刷
部を検査する方法と装置の開発を目的とする。[Problems to be Solved by the Invention] Even if the product itself is good,
If a printing defect or label error is found at the final stage, it will be discarded as a defective product, so inspection of the printing section is important.
If the discovery of defective printing is delayed, a large amount of defective products will be produced, so it is desirable to inspect the printing section immediately after printing or pasting printed matter. However, since the printed characters, symbols, etc. of the product are generally small, it is not easy to continue visual inspection throughout the day, and eye fatigue is particularly great when the product is inspected during running without stopping. If there is a printing section on the side or back of the product, it will be difficult to inspect it while running. It is an object of the present invention to develop a method and an apparatus for inspecting a printing section easily and reliably without stopping or pulling out a product running at high speed.
【０００４】[0004]
【課題を解決するための手段】この発明の走行中の製品
の印刷部検査方法は、製品が検査位置に来た時、その印
刷部付近だけに絞って撮影できるよう、ビデオカメラと
ストロボ照明具とを設置し、上記製品の送給装置とスト
ロボ制御部とを関連させて、製品が上記検査位置を通過
する瞬間に、上記ストロボ照明具を発光させ、上記発光
により上記カメラがとらえた瞬間映像を、直ちに見易く
拡大してテレビ画面に静止画像として表示することを特
徴とする。According to the method for inspecting a printing section of a running product according to the present invention, when a product comes to an inspection position, a video camera and a stroboscopic illuminator are provided so that a photograph can be narrowed down only near the printing section. Is installed, and the feeding device of the product and the strobe control unit are associated with each other, and at the moment when the product passes the inspection position, the strobe illuminator is caused to emit light, and the momentary image captured by the camera by the light emission. Is displayed immediately as a still image on a TV screen after being enlarged for easy viewing.
【０００５】製品を、印刷ロールで印刷される長尺製品
に限定した場合のこの発明の印刷部検査方法は、高速で
繰出される長尺製品に対し、連続回転する印刷ロールに
より、間欠的に帯状に印刷した記号等の印刷部を、上記
高速のまゝ検査する方法において、製品検査位置に順次
到達する帯状印刷部の各記号等を、目視検査に必要な大
きさに拡大表示できるよう、検査位置付近だけに絞って
撮るビデオカメラとストロボ照明具とを設置し、上記印
刷部を含む被検査区間の長さを、上記ビデオカメラの瞬
間映写幅により複数区分に分割し、その一区分が検査位
置に達した時、ストロボを発光させてその瞬間映像を撮
り、それを静止画像にして拡大、表示し、印刷ロールの
一回転に上記一区分を撮ることを繰返して、全区分の検
査を終える、ことを特徴とする。The printing portion inspection method of the present invention in the case where the product is limited to the long product printed by the printing roll, the long product delivered at a high speed is intermittently rotated by the continuously rotating printing roll. In the method of inspecting printed parts such as symbols printed in strips at the above high speed, it is possible to enlarge and display each symbol etc. of the strip printed part that sequentially reaches the product inspection position to the size required for visual inspection. A video camera and a strobe lighting fixture are installed that focus only near the inspection position, and the length of the section to be inspected, including the printing section, is divided into multiple sections according to the instantaneous projection width of the video camera. When the inspection position is reached, the strobe is fired to take a momentary image, which is enlarged and displayed as a still image, and the above one section is taken for one rotation of the printing roll. To finish And it features.
【０００６】上記長尺製品に対するこの発明の印刷部検
査装置は、上記製品検査位置付近だけに絞って撮るよう
に設置したビデオカメラとストロボ照明具、上記印刷ロ
ールに付設した同期パルス発生装置から、印刷ロールの
回転周期を示す信号を受け、上記ストロボ照明具の制御
部とビデオカメラの画像信号処理部へ信号を送るストロ
ボ発光信号演算部、上記印刷ロールの回転周期の中の検
査区間の位置を指定して、上記演算部に設定する区間設
定部、及び、上記ビデオカメラの瞬間映写幅により上記
検査区間を等分した区分の数と一区分の長さを、上記演
算部に設定する区分設定部、を備えることを特徴とす
る。The printing unit inspection device of the present invention for the long product is composed of a video camera and a stroboscopic illuminator installed so that the image is taken only in the vicinity of the product inspection position, and a synchronous pulse generator attached to the printing roll. A strobe emission signal calculation unit that receives a signal indicating the rotation period of the printing roll and sends a signal to the control unit of the strobe lighting device and the image signal processing unit of the video camera, and the position of the inspection section in the rotation period of the printing roll. A section setting unit which is designated and set in the calculation unit, and a division setting which sets in the calculation unit the number of divisions and the length of one division equally dividing the inspection section by the instantaneous projection width of the video camera. And a section.
【０００７】[0007]
【作用】検査位置を高速で通過する製品印刷部を人間の
目で見る場合も、目に代わるビデオカメラで見る場合
も、印刷部の記号、文字が流れて見辛い。この発明は動
く物を撮るためのビデオカメラにストロボ照明具を組合
せて、瞬間静止画像用カメラにする。ストロボの発光時
間は極めて短いから、画像が流れない。要すれば製品の
裏面、側面の印刷も同様に撮って、同時検査することも
可能にした。ビデオカメラは印刷部付近だけに絞って撮
影するから、その映像は見易い大きさに拡大してテレビ
画面に表示できる。The symbols and characters of the printing section flow and are difficult to see when the product printing section that passes through the inspection position at high speed is viewed with human eyes or with a video camera instead of the eyes. The present invention combines a video camera for shooting moving objects with a strobe illuminator to provide an instantaneous still image camera. Since the flash emission time is extremely short, the image does not flow. If necessary, the back and side of the product can also be printed in the same way, allowing simultaneous inspection. Since the video camera captures images only near the printing section, the image can be enlarged to a size that is easy to see and displayed on the TV screen.
【０００８】電線等の長尺製品に帯状に印刷した記号等
の印刷部を検査する場合、印刷部は極めて細く、しかも
長いため、これに絞って撮影するのは難しい。この発明
はその細く長い印刷部に対しても、検査容易な大きさに
拡大できるよう印刷部を区分し、印刷ロールの一回転に
一区分ずつ撮ってゆく。高速走行する電線等の細長い印
刷部を区分別に撮影するこの発明の装置は、印刷ロール
に同期パルス発生装置を加えて、印刷ロールの回転周期
が分るようにし、その中の検査区間の位置と、上記区分
の数と長さを設定すれば、自動的に印刷ロールの一回転
に一区分ずつ、逐次映写して拡大表示するようにした。When inspecting a printed portion such as a symbol printed in a strip shape on a long product such as an electric wire, since the printed portion is extremely thin and long, it is difficult to focus on this and photograph. According to the present invention, even for the thin and long printing section, the printing section is divided so that it can be enlarged to a size that can be easily inspected, and one section is taken for each rotation of the printing roll. The apparatus of the present invention for photographing a long and thin printing section such as an electric wire traveling at a high speed for each section is provided with a synchronous pulse generator for the printing roll so that the rotation cycle of the printing roll can be known, and the position of the inspection section in the By setting the number and length of the above-mentioned sections, one section is automatically projected for one rotation of the print roll and the images are enlarged and displayed successively.
【０００９】[0009]
【実施例】図１は製品１が撮影の難しい電線の場合の実
施例である。符号２は印刷ロールで、これに付した発信
点（図略）を検出する同期センサ３ａと同期パルス発生
装置３が付いている。検査位置Ｓに向けて小型ビデオカ
メラ４とストロボ照明器５が設けられ、高速走行する記
号印刷Ｍをとらえている。ビデオカメラ４は画像信号処
理部４ａを介して表示用テレビ４ｂ、ＶＴＲ記録装置４
ｃに接続している。ストロボ照明器５はストロボ制御部
５ａに接続し、この制御部５ａはストロボ発光信号演算
部６の指令を受ける。EXAMPLE FIG. 1 shows an example in which the product 1 is an electric wire which is difficult to photograph. Reference numeral 2 is a printing roll, which is provided with a synchronization sensor 3a for detecting a transmission point (not shown) attached thereto and a synchronization pulse generator 3. A small video camera 4 and a strobe illuminator 5 are provided toward the inspection position S to capture the symbol print M traveling at high speed. The video camera 4 includes a display TV 4b and a VTR recording device 4 via the image signal processing unit 4a.
connected to c. The strobe illuminator 5 is connected to a strobe control unit 5a, and the control unit 5a receives a command from the strobe light emission signal calculation unit 6.
【００１０】演算部６は同期パルス発生装置３から、印
刷ロール２の一回転ごとに、回転周期ｌを示すパルス信
号Ｐを受ける。回転周期ｌの中の検索区間ｍの位置決め
は、使用する印刷ロール２の銘柄と、同期センサ３ａへ
の発信点取付位置で決まる距離ｎ（パルス信号Ｐから検
査区間ｍまでの距離）を、区間設定部７に設定する。検
査区間ｍをビデオカメラ４の瞬間映写幅で等分した各区
分ａの位置決めには、区分の数と一区分の長さを区分設
定部８に設定し、いずれも演算部６に入れる。検査区間
ｍの区分ａは、ビデオカメラ４で撮った映像が見易く拡
大されて、図２のようにテレビ画面に表示できるよう、
カメラを近接させた時の瞬間映写幅で決まるのであっ
て、この実施例では区分長さ２０ｍｍ、区分数６であ
る。The arithmetic unit 6 receives a pulse signal P indicating a rotation cycle 1 from the synchronous pulse generator 3 for each rotation of the printing roll 2. In the positioning of the search section m in the rotation cycle l, the distance n (the distance from the pulse signal P to the inspection section m) determined by the brand of the printing roll 2 to be used and the transmission point mounting position on the synchronous sensor 3a is set as the section. Set in the setting unit 7. In order to position each section a in which the inspection section m is equally divided by the instantaneous projection width of the video camera 4, the number of sections and the length of one section are set in the section setting unit 8 and both are entered in the calculation unit 6. In the section a of the inspection section m, the image taken by the video camera 4 is enlarged for easy viewing and can be displayed on the TV screen as shown in FIG.
It is determined by the instantaneous projection width when the cameras are brought close to each other. In this embodiment, the segment length is 20 mm and the segment number is 6.
【００１１】演算部６は一つの周期パルス信号Ｐを受け
てから、製品１の走行距離がｎに達する時間だけ経過し
た時、ストロボ制御部５ａへ最初の発光指令を出す。こ
れで検査区間ｍの最初の区分ａが映写され、拡大表示さ
れる。最初の区分ａの画像の目視検査が終わったら、今
度はパルス信号Ｐを受けた後、製品走行距離が（ｎ＋
ａ）になる時間経過した時、次の発光指令を出す。こう
して第２区分の映写、拡大、目視検査が終わったら、次
はパルス信号Ｐから（ｎ＋２ａ）だけ走行する時間経過
により発光指令を出す。このようにして（ｎ＋５ａ）ま
で６回の発光により、６区分全部の検査を終える。The arithmetic unit 6 issues a first light emission command to the strobe control unit 5a when the traveling distance of the product 1 reaches n after receiving one periodic pulse signal P. Thus, the first section a of the inspection section m is projected and enlarged and displayed. After the visual inspection of the image of the first section a is completed, this time after the pulse signal P is received, the product traveling distance is (n +
When the time to become a) has passed, the next light emission command is issued. After the projection, enlargement, and visual inspection of the second section are completed in this way, a light emission command is issued next after the passage of time (n + 2a) from the pulse signal P. In this way, the inspection of all 6 sections is completed by emitting light 6 times until (n + 5a).
【００１２】なお、この実施例では区間設定部７、区分
設定部８それぞれへの設定値ｎ、ａを距離そのものでな
く、（ｎ／ｌ×１００％）、（ａ／ｌ×１００％）と、
百分率でもって設定し、これを周期ｌの計測時間に乗ず
ることにより、距離ｎ、ａの所要走行時間を求めてい
る。このようにした事により、同じ銘柄の印刷ロールで
も製品走行速度を変える場合、あるいは不可抗力で速度
が変わる場合も狂うことなく、検査区間を検査する事が
出来る。In this embodiment, the set values n and a for the section setting section 7 and the section setting section 8 are not (n / l × 100%) and (a / l × 100%) but the distance itself. ,
The required travel time for the distances n and a is determined by setting the percentage and multiplying this by the measurement time of the cycle l. By doing so, even if the printing rolls of the same brand change the product traveling speed or the speed changes due to force majeure, the inspection section can be inspected without being confused.
【００１３】[0013]
【発明の効果】製品の印刷部には小さな文字、記号が多
く、その目視検査を続ける作業は容易でない。まして走
行中の製品の印刷部を目視検査する事は熟練と忍耐を要
し、高速走行の場合は目視検査不可能と考えられたが、
この発明はこれを可能にした。この発明の検査方法はビ
デオカメラとテレビ画面を使うが、これにストロボ照明
具を加え、カメラは印刷部付近に絞って撮ることによ
り、チラッキのない静止画像を十分拡大して表示され、
目視検査が極めて容易で確実になった。The printed portion of the product has many small characters and symbols, and it is not easy to continue the visual inspection. Furthermore, visual inspection of the printed part of the running product requires skill and patience, and it was considered impossible to perform visual inspection at high speed.
This invention made this possible. The inspection method of the present invention uses a video camera and a television screen, but by adding a strobe lighting device to the camera and squeezing the image near the printing part, a still image without flicker is displayed sufficiently enlarged,
Visual inspection is extremely easy and reliable.
【００１４】またこの発明は、電線の記号等の印刷部の
ように小さくて長い印刷部の検査には、拡大表示できる
よう印刷部に近づけたビデオカメラの瞬間映写幅でもっ
て検査区間を区分し、印刷ロールの一回転に一区分だけ
映写する事を繰返して全区間を検査する新方式を開き、
またそのための装置を提供した。なお、この発明によれ
ば一個の製品の表裏、側面等の各印刷部や、離れた位置
の複数製品の印刷部を一人の検査員が目視検査する事も
可能にした。この発明により不良印刷を印刷直後に検出
し、直ちに訂正させられるため、不良品の発生を画期的
に減少し得る効果は絶大である。Further, according to the present invention, when inspecting a small and long print portion such as a print portion of a wire symbol or the like, the inspection section is divided by the instantaneous projection width of a video camera which is brought close to the print portion so that it can be enlarged and displayed. , Opening a new method of inspecting all sections by repeating projection of one section per rotation of the printing roll,
Moreover, the apparatus for it was provided. According to the present invention, it is possible for one inspector to visually inspect each printing portion such as front and back sides and side surfaces of one product, and the printing portions of a plurality of products at distant positions. According to the present invention, defective printing can be detected immediately after printing and corrected immediately, so that the effect of dramatically reducing the occurrence of defective products is great.
【図１】この発明の一実施例説明図。FIG. 1 is an explanatory view of an embodiment of the present invention.
【図２】テレビ画面に拡大された映像の説明図。FIG. 2 is an explanatory diagram of an image enlarged on a television screen.
１ 製品 ２ 印刷ロール ４ ビデオカメラ ５ ストロボ照明具 ６ 発光信号演算部 ７ 区間設定部 ８ 区分設定部 1 Product 2 Printing Roll 4 Video Camera 5 Strobe Lighting 6 Light Emission Signal Calculation Section 7 Section Setting Section 8 Classification Setting Section
───────────────────────────────────────────────────── フロントページの続き (72)発明者 坂戸 英俊 長野県佐久市中込171−３ 雇用促進住宅 １Ａ−502 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hidetoshi Sakado 171-3 Nakagome, Saku City, Nagano Employment Promotion Housing 1A-502
Claims (3)
近だけに絞って撮影できるよう、ビデオカメラとストロ
ボ照明具とを設置し、 上記製品の送給装置とストロボ制御部とを関連させて、
製品が上記検査位置を通過する瞬間に、上記ストロボ照
明具を発光させ、 上記発光により上記カメラがとらえた瞬間映像を、直ち
に見易く拡大してテレビ画面に静止画像として表示する
ことを特徴とする走行中の印刷部検査方法。1. A video camera and a strobe illuminator are installed so that when a product comes to an inspection position, only the vicinity of the printing section can be photographed, and the feeding device of the product and the strobe control unit are related to each other. Let me
At the moment when the product passes the inspection position, the strobe lighting device is caused to emit light, and the momentary image captured by the camera by the emission is immediately enlarged for easy viewing and displayed as a still image on the television screen. Inside printing method.
回転する印刷ロールにより、間欠的に帯状に印刷した記
号等の印刷部を、上記高速のまゝ検査する方法におい
て、 製品検査位置に順次到達する帯状印刷部の各記号等を、
目視検査に必要な大きさに拡大表示できるよう、検査位
置付近だけに絞って撮るビデオカメラとストロボ照明具
とを設置し、 上記印刷部を含む被検査区間の長さを、上記ビデオカメ
ラの瞬間映写幅により複数区分に分割し、その一区分が
検査位置に達した時、ストロボを発光させてその瞬間映
像を撮り、それを静止画像にして拡大、表示し、 印刷ロールの一回転に上記一区分を撮ることを繰返し
て、全区分の検査を終える、 ことを特徴とする走行中の製品の印刷部検査方法。2. A method for inspecting a printed portion of a symbol or the like, which is intermittently printed in a strip shape by a printing roll that continuously rotates on a long product fed at high speed, at the product inspection position. The symbols of the strip-shaped printing section, etc.
We installed a video camera and a strobe illuminator that focus only on the vicinity of the inspection position so that the image can be enlarged to the size required for visual inspection. It is divided into multiple sections according to the projection width, and when one section reaches the inspection position, the strobe is fired to take a momentary image, which is enlarged and displayed as a still image. A method for inspecting a printed part of a running product, which is characterized by repeating inspection of all the sections by repeatedly taking the sections.
の検査装置であって、 上記製品検査位置付近だけに絞って撮るように設置した
ビデオカメラとストロボ照明具、 上記印刷ロールに付設した同期パルス発生装置から、印
刷ロールの回転周期を示す信号を受け、上記ストロボ照
明具の制御部とビデオカメラの画像信号処理部へ信号を
送るストロボ発光信号演算部、 上記印刷ロールの回転周期の中の検査区間の位置を指定
して、上記演算部に設定する区間設定部、及び、 上記ビデオカメラの瞬間映写幅により上記検査区間を等
分した区分の数と一区分の長さを、上記演算部に設定す
る区分設定部、 を備えることを特徴とする走行中の製品の印刷部検査装
置。3. The inspection device for the printing portion inspection method according to claim 2, wherein the video camera and the stroboscopic illuminator are installed so as to focus and photograph only near the product inspection position, and attached to the printing roll. From the synchronizing pulse generator, a signal indicating the rotation period of the printing roll is received, and a strobe light emission signal calculation unit that sends a signal to the control unit of the strobe lighting device and the image signal processing unit of the video camera, the rotation period of the printing roll. The position of the inspection section in the inside is specified, and the section setting section which is set in the above-mentioned calculation section, and the number of sections and the length of one section into which the inspection section is equally divided by the instantaneous projection width of the video camera are A printing unit inspection device for a running product, comprising: a classification setting unit that is set in a calculation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4166693A JPH05338907A (en) | 1992-06-03 | 1992-06-03 | Printed section inspection method for moving product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4166693A JPH05338907A (en) | 1992-06-03 | 1992-06-03 | Printed section inspection method for moving product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05338907A true JPH05338907A (en) | 1993-12-21 |
Family
ID=15835993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4166693A Pending JPH05338907A (en) | 1992-06-03 | 1992-06-03 | Printed section inspection method for moving product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05338907A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159628A (en) * | 1989-11-03 | 1992-10-27 | Sextant Avionique | Hook-off detection device for a telephone handset |
| JP2009286537A (en) * | 2008-05-28 | 2009-12-10 | Komori Corp | Device for monitoring sheet-like object of device for discharging sheet-like object |
| CN111038094A (en) * | 2018-10-12 | 2020-04-21 | 住友重机械工业株式会社 | Control device and related system provided with same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63106265A (en) * | 1986-10-20 | 1988-05-11 | Kanzaki Paper Mfg Co Ltd | Defect display method |
-
1992
- 1992-06-03 JP JP4166693A patent/JPH05338907A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63106265A (en) * | 1986-10-20 | 1988-05-11 | Kanzaki Paper Mfg Co Ltd | Defect display method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159628A (en) * | 1989-11-03 | 1992-10-27 | Sextant Avionique | Hook-off detection device for a telephone handset |
| JP2009286537A (en) * | 2008-05-28 | 2009-12-10 | Komori Corp | Device for monitoring sheet-like object of device for discharging sheet-like object |
| CN111038094A (en) * | 2018-10-12 | 2020-04-21 | 住友重机械工业株式会社 | Control device and related system provided with same |
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