JPS63281071A - Detecting method for defect in terminal crimping of terminal-crimped electric conductor - Google Patents
Detecting method for defect in terminal crimping of terminal-crimped electric conductorInfo
- Publication number
- JPS63281071A JPS63281071A JP62114423A JP11442387A JPS63281071A JP S63281071 A JPS63281071 A JP S63281071A JP 62114423 A JP62114423 A JP 62114423A JP 11442387 A JP11442387 A JP 11442387A JP S63281071 A JPS63281071 A JP S63281071A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- crimping
- waveform
- signal
- force
- 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
- 238000002788 crimping Methods 0.000 title claims abstract description 82
- 239000004020 conductor Substances 0.000 title claims abstract description 14
- 230000007547 defect Effects 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title description 6
- 230000008859 change Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000004049 embossing Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 abstract description 15
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000002950 deficient Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 230000002123 temporal effect Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000012850 discrimination method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は被覆を剥離して導体を裸出した電線の端末に端
子を圧着する際の圧着不良を検出する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for detecting crimping defects when a terminal is crimped to the end of an electric wire whose conductor is exposed by peeling off the coating.
（従来の技術）
被覆電線の端末に端子を圧着する場合、成る一定長に切
断した被覆電線の端末の被覆を成る一定長だけ剥離し、
一定の形状及び寸法の端子を当該端末に装着して圧着す
る。即ち、第７図（ａ）に示すように端子圧着において
、端子Ｔの被覆つかみ部Ｔ１は電線Ｗの被覆部Ｗｔを全
周に亘り、且つその被覆部から僅かな距離を残して確実
につかみ、導体つかみ部Ｔ２は導体（芯線）Ｗ２を全周
に亘り確実につかむようにして圧着し、当該電線Ｗの端
末に端子Ｔを圧着する。(Prior art) When crimping a terminal to the end of a covered electric wire, the covering of the end of the covered wire is cut to a certain length, and the coating is peeled off by a certain length.
A terminal of a certain shape and size is attached to the terminal and crimped. That is, as shown in FIG. 7(a), during terminal crimping, the covering gripping part T1 of the terminal T securely grips the covering part Wt of the electric wire W over the entire circumference and leaving a small distance from the covering part. The conductor gripping portion T2 securely grips and crimps the conductor (core wire) W2 over the entire circumference, and crimps the terminal T to the end of the electric wire W.
かかる電線Ｗへの端子Ｔの圧着は端子圧着装置により自
動的に行われるが、圧着時に、導体Ｗ２の一部が導体つ
かみ部Ｔ２からはみ出したり（所謂「芯線こぼれ」、第
７図Φ））、端子Ｔの被覆つかみ部Ｗｌが導体Ｗ２をつ
かんだり（所謂「首吊り」、第７図（ｄ））、或いは導
体つかみ部Ｔ２が被覆部Ｗ１をつかんだり（所謂「樹脂
かみ」、第７図（ｄ））する等の種々の圧着不良が発生
する。The terminal T is automatically crimped onto the electric wire W by a terminal crimping device, but during crimping, a part of the conductor W2 protrudes from the conductor gripping portion T2 (so-called "core wire spillage", Φ in Fig. 7). , the covering gripping portion Wl of the terminal T grips the conductor W2 (so-called “hanging”, FIG. 7(d)), or the conductor gripping portion T2 grips the covering portion W1 (so-called “resin gripping”, FIG. 7(d)). (d) Various types of crimping failures occur, such as (d)).
このような端子圧着不良を検出する方法として本願出願
人は端子圧着時の異常を圧力センサにより検出して圧着
状態を識別し、前記各種の端子圧着不良を検出するよう
にした「電線端子圧着状態判別方法」 （特願昭５９−
１０１４６７）を提案している、また、画像処理等の視
覚認識を用いて圧着状態を識別して圧着不良を検出する
ようにした「端子圧着電線の端子圧着部検査装置」 （
特開昭６１−１６１４０４．１６５６４５）等も提案さ
れている。As a method for detecting such terminal crimping defects, the applicant of the present application has developed a method for detecting terminal crimping defects by detecting abnormalities during terminal crimping using a pressure sensor to identify the crimping state, and detecting the various types of terminal crimping defects described above. Discrimination method” (Patent application 1982-
101467), which also uses visual recognition such as image processing to identify the crimped state and detect poor crimping.
JP-A-61-161404.165645) and the like have also been proposed.
（発明が解決しようとする問題点）
しかしながら、前者においては端子圧着時の異常を圧力
センサのレベルにより判別しているために当該異常が「
芯線こぼれ（芯線ひげ）」によるものか、或いは「樹脂
かみ」によるものか等の異常の種類の判定が困難であり
、且つ同じ異常であっても実際上は良品とされるものが
あり、異常の判定を行うことが困難であるという問題が
ある。(Problem to be solved by the invention) However, in the former case, the abnormality during terminal crimping is determined based on the level of the pressure sensor.
It is difficult to determine the type of abnormality, such as whether it is caused by core wire spillage (core wire whiskers) or resin bite, and even if the same abnormality is present, it may actually be a good product. There is a problem in that it is difficult to make a determination.
また、後者においては、「芯線こぼれｊ等は形状的な差
異を有するために比較的容易にその識別を行うことが可
能であるが、「樹脂かみ」、「首吊り」状態では形状的
な差異が表れ難いためにその識別が一般に困難である。In addition, in the latter case, it is relatively easy to identify core wire spills, etc., as they have a shape difference, but there is a shape difference in the "resin bite" and "hanging" states. It is generally difficult to identify because it is difficult to express.
更に、端子不良識別では端子圧着時に識別を行い、不良
品を排除することが望ましいが、通常端子圧着台の上方
位置には圧着アプリケータ等が配置されてＩＴＶカメラ
等の視覚認識装置により圧着部を見るスペースがなく、
圧着作業も高速、且つ連続的に行われるために、良質な
静止画像を得ることが困難である等の問題がある。Furthermore, it is desirable to identify defective terminals when they are crimped and eliminate defective products, but usually a crimping applicator or the like is placed above the terminal crimping table, and a visual recognition device such as an ITV camera detects the crimped parts. There is no space to look at the
Since the crimping work is also performed at high speed and continuously, there are problems such as difficulty in obtaining high-quality still images.
本発明は上述の問題点を解決するためになされたもので
、端子圧着装置の端子圧着時におけるプレスに加わる力
を検出し、当該力の時間的な変化をパターンとして捉え
て圧着不良を判定するようにした端子圧着電線の端子圧
着不良検出方法を提供することを目的とする。The present invention has been made to solve the above-mentioned problems, and detects the force applied to the press during terminal crimping of a terminal crimping device, and determines crimping failure by capturing temporal changes in the force as a pattern. It is an object of the present invention to provide a method for detecting terminal crimping defects in a terminal crimping electric wire.
（問題点を解決するための手段）
上記目的を達成するために本発明によれば、端子圧着台
上で端子圧着用型押部により被覆を剥離して導体を裸出
した電線の端末に端子を圧着する時の圧着力を荷重セン
サにより検出し、当該検出した圧着力の時間的変化をパ
ターンとして捉え、当該パターンの変化により前記端子
の圧着状態の良否を判定するようにしたものである。(Means for Solving the Problems) In order to achieve the above object, according to the present invention, the coating is peeled off using the terminal crimping embossing part on the terminal crimping stand, and a terminal is attached to the terminal of the electric wire where the conductor is exposed. The crimp force when crimping the terminal is detected by a load sensor, the temporal change in the detected crimp force is captured as a pattern, and the quality of the crimp state of the terminal is determined based on the change in the pattern.
（作用）
端子圧着時にプレスに加わる反力の時間的変化パターン
を調べ、当該パターンの相違点から端子の圧着状態を判
定し、当該圧着の不良及びその種類を識別する。これに
より正確、且つ迅速に端子の圧着不良の検出・分類が可
能となる。(Function) The temporal change pattern of the reaction force applied to the press during terminal crimping is examined, the crimped state of the terminal is determined from the differences in the pattern, and the defective crimping and its type are identified. This makes it possible to accurately and quickly detect and classify terminal crimping defects.
（実施例） 以下本発明の一実施例を添付図面に基づいて詳述する。(Example) An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
第１図は本発明を適用した端子圧着装置を示し、端子圧
着装置ｌはプレスフレーム２、当該プレスフレーム２に
配置される端子圧着台３、当該端子圧着台３の上方に上
下動可能に配置されるアプリケータ４、当該アプリケー
タ４の下端に装着される端子圧着用型押部５、アプリケ
ータ４の上端に下端を固定され、且つプレスフレーム２
の中央のフレーム２ａに穿設された孔２ｂを摺動可能に
嵌挿されるラム６、当該ラム６を上下動させるトグル装
置７及び端子配給レバー８等により構成される。FIG. 1 shows a terminal crimping device to which the present invention is applied, in which the terminal crimping device 1 includes a press frame 2, a terminal crimping table 3 disposed on the press frame 2, and a terminal crimping table 3 arranged vertically movably above the terminal crimping table 3. an applicator 4, a terminal crimping embossing part 5 attached to the lower end of the applicator 4, a lower end fixed to the upper end of the applicator 4, and a press frame 2.
It is comprised of a ram 6 that is slidably inserted into a hole 2b formed in a central frame 2a, a toggle device 7 that moves the ram 6 up and down, a terminal distribution lever 8, and the like.
トグル装置７は上方リンク７１と、下方リンク７２と、
トグル７３と、フライホイール７４とを備え、これらの
上方リンク７１と下方リンク７２とトグル７３との各一
端は軸７５により回動可能に枢支され、上方リンク７１
の他端は固定部７６に、下方リンクの他端はラム６の上
端に、トグル７３の他端はフライホイール７４の周縁に
夫々回動、回転可能に軸支されている。フライホイール
７４は図示しないモータにより回転され、当該フライホ
イール７４の回転はトグル７３及び上、下の各リンク７
１．７２を介してラム６に伝達され、当該ラム６が上下
に往復動される。The toggle device 7 includes an upper link 71 and a lower link 72.
A toggle 73 and a flywheel 74 are provided, and one end of each of the upper link 71, the lower link 72, and the toggle 73 is rotatably supported by a shaft 75, and the upper link 71
The other end of the lower link is rotatably supported by the fixed portion 76, the other end of the lower link is supported by the upper end of the ram 6, and the other end of the toggle 73 is rotatably supported by the periphery of the flywheel 74, respectively. The flywheel 74 is rotated by a motor (not shown), and the rotation of the flywheel 74 is controlled by the toggle 73 and the upper and lower links 7.
1.72 to the ram 6, and the ram 6 is reciprocated up and down.
端子配給レバー８は上端を軸８１を介して回動可能に枢
支され、中央部に設けられた駆動溝８２内に、一端をア
プリケータ４の上端に固定されたアーム８３の他端がピ
ンを介して係合され、下端には杆８４を装着されている
。この端子配給レバー８はアプリケータ４の上下動によ
り左右に揺動されて杆８４を左右に駆動して多数の端子
が帯状に連綴された連続端子Ｔｃから端子Ｔを１個づつ
端子台３上に配給する。The terminal dispensing lever 8 has an upper end rotatably supported via a shaft 81, and has one end fixed to the upper end of the applicator 4 and an arm 83 fixed to the upper end of the applicator 4 within a drive groove 82 provided in the center. A rod 84 is attached to the lower end. This terminal distribution lever 8 is swung left and right by the vertical movement of the applicator 4, and drives the rod 84 left and right to move the terminals T one by one onto the terminal block 3 from the continuous terminal Tc in which a large number of terminals are connected in a strip. distributed to.
トグル装置７は上、下の各リンク７１．７２の枢支点（
軸７５の位置）をトグル７３により押すとこれらの両リ
ンク７１．７２が一直線に近付くに従ってリンクの長さ
方向の力即ち、これらのリンク７１．７２の長さ方向に
沿って垂直方向に押す力Ｐが大きくなる０両リンク７Ｌ
７２の長さが等しいものとし、垂直線とリンク７２との
なす角をθ、トグル７５の押圧力をＦとすると、リンク
７２がラム６を押下する力Ｐは次式で表される。The toggle device 7 is connected to the pivot points of the upper and lower links 71 and 72 (
When the position of the shaft 75 is pressed by the toggle 73, as these links 71, 72 approach a straight line, a force in the longitudinal direction of the links, that is, a force pushing vertically along the length of these links 71, 72 is generated. 0-car link 7L where P increases
Assuming that the lengths of the links 72 are equal, the angle between the vertical line and the link 72 is θ, and the pressing force of the toggle 75 is F, the force P with which the link 72 presses down the ram 6 is expressed by the following equation.
Ｐ＝Ｆ／（２ｔａｎθ）
この力Ｐは端子圧着用型押部５が端子台３上の端子Ｔを
圧着する力（以下圧着力という）である。P=F/(2tanθ) This force P is the force (hereinafter referred to as crimping force) with which the terminal crimping embossing part 5 crimps the terminal T on the terminal block 3.
従って、ラム６は端子圧着時に当該圧着力Ｐの反力Ｐ“
（−Ｐ）を受ける。そこで、このラム６に作用する反
力Ｐ°を検出する。Therefore, when crimping the terminal, the ram 6 exerts a reaction force P" of the crimping force P.
Receive (-P). Therefore, the reaction force P° acting on this ram 6 is detected.
ラム６は所定位置例えば、下部を第１図及び第２図に示
すように全周に亘り軸方向と直角方向に断面コ字状に切
り欠かれて細身の柱６ａとされ、当該柱６ａに圧力セン
サ１０が配設されている。The ram 6 is at a predetermined position, for example, as shown in FIGS. 1 and 2, the lower part is cut out in a U-shaped cross section in a direction perpendicular to the axial direction over the entire circumference to form a slender column 6a. A pressure sensor 10 is provided.
圧力センサｌＯは２つの圧力センサ１１，１１“から成
り、一方の圧力センサ１１は柱６ａの前面６ｂに、他方
の圧力センサ１１’ は裏面に夫々配設されている。圧
力センサ１１は例えば、２枚のロードセル１２．１３に
より構成され、これらの各ロードセル１２．１３は互い
に直交して配置され、一方のロードセル１２は柱６ａの
軸方向（縦方向）に沿って、他方のロードセル１３は軸
方向と直角方向（横方向）に沿って貼着される。ロード
セル１２は柱６ａの縦方向の伸縮（歪）に応じて、ロー
ドセル１３は横方向の伸縮（歪）に応じて抵抗値が変化
する。The pressure sensor IO consists of two pressure sensors 11 and 11'', one pressure sensor 11 is disposed on the front surface 6b of the column 6a, and the other pressure sensor 11' is disposed on the back surface.The pressure sensor 11 is, for example, Consisting of two load cells 12.13, each of these load cells 12.13 is arranged perpendicular to each other, one load cell 12 is arranged along the axial direction (vertical direction) of the column 6a, and the other load cell 13 is arranged along the axis. The resistance value of the load cell 12 changes according to the vertical expansion/contraction (strain) of the column 6a, and the resistance value of the load cell 13 changes according to the horizontal expansion/contraction (strain) of the column 6a. do.
ラム６の柱６ａの裏面に配置される圧力センサ１１°も
前面６ｂに配置された圧力センサ１１と同様に２枚のロ
ードセル１２°、１３°により構成され、且つ圧力セン
サ１１と略対称位置に貼着されている。The pressure sensor 11° disposed on the back side of the column 6a of the ram 6 is also composed of two load cells 12° and 13°, similar to the pressure sensor 11 disposed on the front face 6b, and is located approximately symmetrically to the pressure sensor 11. It is pasted.
この圧力センサｌＯはラム６による端子圧着時に当該ラ
ム６の柱６ａに発生する前記歪みを検出することにより
当該ラム６に加わる前記圧着力の反力を検出する。尚、
ラム６に細身の柱６ａを形成して当該柱６ａの歪みを検
出することにより端子圧着時に当該ラム６に発生する反
力を高感度に検出することが可能となる。This pressure sensor IO detects the reaction force of the crimping force applied to the ram 6 by detecting the strain generated in the column 6a of the ram 6 when the ram 6 is crimping the terminal. still,
By forming a slender column 6a on the ram 6 and detecting the distortion of the column 6a, it becomes possible to detect with high sensitivity the reaction force generated in the ram 6 during terminal crimping.
圧力センサ１０の各センサ１１．１１°の各ロードセル
１２．１３及び１２°、１３°は第３図に示すようにブ
リッジ回路に接続され、ロードセル１２と１２”、１３
と１３゛との各接続点ａ。Each sensor 11.11° and each load cell 12.13 and 12°, 13° of the pressure sensor 10 are connected to a bridge circuit as shown in FIG.
Each connection point a between and 13゛.
ｂは所定の電源１５に接続され、ロードセル１２と１３
．１２′と１３′との各接続点ｃ、ｄは端子１０ａ、１
０ｂに接続される。b is connected to a predetermined power supply 15, and load cells 12 and 13
．． Connection points c and d between terminals 12' and 13' are terminals 10a and 1
Connected to 0b.
圧力センサ１０の各端子１０ａ、１０ｂはパターン判定
回路２０のストレンアンプ２１の入力端子に接続され、
当該ストレンアンプ２１の出力端子はアナログ−デジタ
ル変換器（以下Ａ／Ｄ変換器という）２２及び比較器２
３の各入力端子に接続される。比較器２３の出力端子は
Ａ／Ｄ変換器２２のトリガ入力端子に接続され、当ｉＡ
／Ｄ変換器２２の出力端子はメモリ２４の入力端子に接
続される。このメモリ２４は更に中央演算処理装置（以
下ＣＰＵという）２５に接続される。Each terminal 10a, 10b of the pressure sensor 10 is connected to an input terminal of a strain amplifier 21 of a pattern determination circuit 20,
The output terminal of the strain amplifier 21 is connected to an analog-to-digital converter (hereinafter referred to as an A/D converter) 22 and a comparator 2.
3 input terminals. The output terminal of the comparator 23 is connected to the trigger input terminal of the A/D converter 22, and the iA
The output terminal of the /D converter 22 is connected to the input terminal of the memory 24. This memory 24 is further connected to a central processing unit (hereinafter referred to as CPU) 25.
以下に作用を説明する。The action will be explained below.
トグル族Ｗ１７はフライホイール７４の回転をトグル７
３及び上、下の各リンク７１．７２を介してラム６を往
復動させ、アプリケータ４を往復動させる。一方、アプ
リケータ４の往復動に応じて端子配給レバー８が左右に
揺動して杆８４を介して連続端子Ｔｃから端子Ｔを１個
づつ端子圧着台３上に供給する。同時に電線（図示せず
）が端子圧着台３に供給され、端末の被覆部を端子Ｔの
被覆つかみ部上に、導体を導体つかみ部上に夫々載置さ
れる。The toggle group W17 toggles the rotation of the flywheel 74.
3 and upper and lower links 71 and 72, the ram 6 is reciprocated, and the applicator 4 is reciprocated. On the other hand, the terminal distribution lever 8 swings left and right in response to the reciprocating movement of the applicator 4, and supplies the terminals T one by one from the continuous terminal Tc onto the terminal crimping table 3 via the rod 84. At the same time, an electric wire (not shown) is supplied to the terminal crimping stand 3, and the covering portion of the terminal is placed on the covering gripping portion of the terminal T, and the conductor is placed on the conductor gripping portion.
電線Ｗが端子Ｔに載置された後、下動するアプリケータ
４の下端に装着された型押部５が端子圧着台３上に電線
の端末と共に！１１１Ｆされた端子Ｔを圧着する。この
端子Ｔの圧着時にラム６に反力が加わり、柱６ａに歪が
発生する。圧力センサ１０はこの柱６ａに発生する歪み
を検出して対応する電気信号（歪み信号）■を出力する
。After the electric wire W is placed on the terminal T, the embossing part 5 attached to the lower end of the applicator 4 that moves downward is placed on the terminal crimping table 3 together with the end of the electric wire! Crimp the 111F terminal T. When the terminal T is crimped, a reaction force is applied to the ram 6, causing distortion in the column 6a. The pressure sensor 10 detects the strain occurring in the column 6a and outputs a corresponding electric signal (distortion signal) (2).
この圧力センサ１０から出力された信号Ｖはストレンア
ンプ２１により増幅された後Ａ／Ｄ変換器２２及び比較
器２３に入力される。比較器２３は入力する信号■と基
準信号Ｖｓとを比較し、■〉■ｓの時にトリガ信号ｐｔ
を出力してＡ／Ｄ変換器２２にレベルトリガをかける。The signal V output from the pressure sensor 10 is amplified by a strain amplifier 21 and then input to an A/D converter 22 and a comparator 23. The comparator 23 compares the input signal ■ with the reference signal Vs, and when ■>■s, the trigger signal pt is
is output to apply a level trigger to the A/D converter 22.
Ａ／Ｄ変換器２２はこのトリガ信号ｐｔを印加されると
サンプリングを開始して入力する信号Ｖの波形をサンプ
リングしてＡ／Ｄ変換を行い、当該波形を時系列でメモ
リ２４に格納する。尚、比較器２３の基準信号■ｓは後
述する端子圧着時に発生する共通波形の立ち上がりを捉
えられる程度の電圧レベルに設定され、当該レベル以上
の信号は全てサンプリングを行う。When this trigger signal pt is applied, the A/D converter 22 starts sampling, samples the waveform of the input signal V, performs A/D conversion, and stores the waveform in time series in the memory 24. The reference signal s of the comparator 23 is set to a voltage level that can capture the rising edge of a common waveform generated during terminal crimping, which will be described later, and all signals above this level are sampled.
信号Ｖの波形のサンプリング周期は使用するプレスの作
動時間により異なるが、本実施例の場合は圧着周期が約
５０．８秒であり、圧着時間は約８０ｍ ｓｅｃである
。従って、波形を４００等分程度にすれば再現性の良い
波形が得られるために約２００μｓｅｃの周期でサンプ
リングしている。Although the sampling period of the waveform of the signal V varies depending on the operating time of the press used, in the case of this embodiment, the crimping period is about 50.8 seconds, and the crimping time is about 80 msec. Therefore, since a waveform with good reproducibility can be obtained by dividing the waveform into about 400 equal parts, sampling is performed at a cycle of about 200 μsec.
ＣＰＵ２５はメモリ２４に格納された正常な圧着状態の
信号波形（以下正常波形という）を記憶しておき、当該
記憶している正常波形と各端子圧着時の各波形とを逐次
比較し、当該波形が正常であるか異常であるかを判定し
、異常と判定したときには異常判定信号Ｖｏを出力する
。The CPU 25 stores the signal waveform of a normal crimping state (hereinafter referred to as a normal waveform) stored in the memory 24, successively compares the stored normal waveform with each waveform at the time of crimping each terminal, and calculates the waveform. It is determined whether it is normal or abnormal, and when it is determined that it is abnormal, it outputs an abnormality determination signal Vo.
第５図（ａｌ〜（ｆ）及び第６図の（ａ）〜（ｆ）は端
子圧着時における信号波形のパターンの一例を示し、第
５図はＡＶＳ Ｏ，５ＳＱ 、第６図はＡ Ｖ ３１．
２５ ＳＱの場合である。尚、これらの各図中正常波形
は実線で、不良時の波形を１点鎖線で表しである。Figures 5 (al to (f)) and Figures 6 (a) to (f) show examples of signal waveform patterns during terminal crimping; Figure 5 shows AVSO, 5SQ, and Figure 6 shows AV 31.
This is the case for 25 SQ. In each of these figures, the normal waveform is represented by a solid line, and the waveform at the time of failure is represented by a chain line.
第５図（ａ）及び第６図（ａ）は夫々正常な圧着状態の
信号波形即ち、正常波形を示し、第５図俣）、（Ｃ）及
び第６図（ｂ）、（Ｃ）に夫々１点鎖線で示す波形は「
芯線こぼれ」時の波形を、第５図（ｂ）は（２／７本）
、同図（Ｃ）は（５／７本）の芯線こぼれ、第６図（ｂ
）は（４／１６本） 、（Ｃ）は（１２／１６本）の芯
線こぼれの場合である。これらの各波形から明らかなよ
うに圧着力のピークレベルは芯線の「こぼれ量」に支配
され、第５図（ａ）及び第６図（ａ）に示す正常晶（第
７図（ａ））の波形とのレベル差を見ることによりその
良否を判定することが可能である。Figures 5(a) and 6(a) respectively show signal waveforms in a normal crimped state, that is, normal waveforms. The waveforms indicated by dashed-dotted lines are as follows.
Figure 5 (b) shows the waveform when the core wire spills (2/7 wires).
, the same figure (C) shows (5/7) core wires spilled, Figure 6 (b)
) is the case of (4/16 core wires) and (C) is the case of (12/16 core wires) spilling. As is clear from these waveforms, the peak level of the crimp force is controlled by the amount of spillage of the core wire, and the normal crystal shown in Figures 5 (a) and 6 (a) (Figure 7 (a)) It is possible to judge whether it is good or bad by looking at the level difference with the waveform.
また、「樹脂かみ（ビニールかみ）」の場合には力のパ
ターンに大きな特徴がある。即ち、第５図（ｄ）、（ｅ
）及び第６図（ｄ）、（ｅ）に１点鎖線で示すように圧
着開始後１５ｗ ｓｅｃ〜３０ ｓ ｓｅｃの間で実線
で示す正常波形と大きな差異がある。従って、この点に
より良否を判別することが可能である。尚、完全な「樹
脂かみ」の場合には第５図（６）、第６図（ｄｉに１点
鎖線で示すように上昇した圧着力が途中で急激に低下す
る傾向がある。Furthermore, in the case of "resin kami (vinyl kami)", there is a significant characteristic in the force pattern. That is, Fig. 5(d), (e
) and in FIGS. 6(d) and (e), there is a large difference from the normal waveform shown by the solid line between 15 W sec and 30 s sec after the start of crimping, as shown by the dashed line. Therefore, it is possible to determine whether the product is good or bad based on this point. In addition, in the case of complete "resin bite", there is a tendency for the pressure bonding force that has increased to suddenly drop halfway, as shown by the dashed line in FIGS. 5(6) and 6 (di).
また、「芯線切れ」の場合には第５図（ｆ）及び第６図
（ｆ）に１点鎖線で示すように波形のピークレベル及び
２５１ｓｅｃ付近における荷重に大きな差異が生じ、こ
れにより良否の判定を行うことが可能である。In addition, in the case of "core wire breakage", there will be a large difference in the peak level of the waveform and the load around 251 seconds, as shown by the dashed line in Figures 5 (f) and 6 (f), and this will lead to a difference in pass/fail. It is possible to make a judgment.
上記各信号波形のパターンにおいて、不良パターン（第
５図（ｂ）〜（ｆ）、第６図（ｂ）〜（ｆ）に１点鎖線
で示す）では実線で示す正常波形のパターンに比して、
端子切り離し時の波形のピーク値の時刻１゜から次に当
該端子の圧着時に前記ピーク値に達した時の時刻も、ま
での時間差（１ｇ−１＋ ）が、「樹脂かみ」の場合は
短く、「芯線こぼれ」若しくは芯線が圧着されていない
「端子のみ」の場合は長くなる。従って、比較のポイン
トとして、共通波形即ち、端子切り離し時の波形のピー
ク値の時間１．を記憶し、次に当該端子の圧着時に前記
ピーク値に達した時の時間ｔ３を検知することにより判
定可能である。また、多数本の「芯線こぼれ」は荷重レ
ベルにより、「樹脂かみ（ビニールかみ）」は圧着途中
のパターン（荷重）により、「芯線切れ」は荷重レベル
により夫々判定することが可能である。更に、圧着時の
ピークレベルの高低を調べることにより不良の程度を識
別ことも可能である。Among the above signal waveform patterns, the defective patterns (shown by dashed-dotted lines in Figures 5 (b) to (f) and Figure 6 (b) to (f)) are compared to the normal waveform patterns shown by solid lines. hand,
The time difference (1g-1+) from the time 1° of the peak value of the waveform when the terminal is disconnected to the time when the peak value is reached when the terminal is next crimped is short in the case of "resin bite"; It will be longer if the core wire is spilled or the core wire is not crimped and there is only a terminal. Therefore, as a point of comparison, the common waveform, that is, the time 1 of the peak value of the waveform when the terminal is disconnected. This can be determined by storing the value and then detecting the time t3 when the peak value is reached when the terminal is crimped. In addition, it is possible to determine whether a large number of core wires are spilled, by the load level, by the pattern (load) during crimping, by the pattern (load) during crimping, and by the load level, by the load level. Furthermore, it is also possible to identify the degree of failure by checking the height of the peak level during crimping.
パターン判定回路２０のＣＰＵ２５から出力された異常
判定信号Ｖｏは警報ランプ等の警報装置に供給されて作
業者に端子圧着の異常を知らせる。The abnormality determination signal Vo output from the CPU 25 of the pattern determination circuit 20 is supplied to an alarm device such as an alarm lamp to notify the operator of an abnormality in terminal crimping.
また、自動端子圧着装置では通常、端子杆された電線は
一定数量（例えば、１００〜２００本単位）で自動結束
して搬出機構により装置外に搬出するように構成されて
いるので、前記異常判定信号Ｖ。In addition, automatic terminal crimping equipment is usually configured to automatically bundle terminal-strapped wires in a fixed quantity (for example, in units of 100 to 200 wires) and transport them out of the equipment by a transport mechanism, so that the above-mentioned abnormality judgment Signal V.
により搬出時に前記異常判定された結束電線を別途に排
出させるようにしても良い、これにより、不良端子付電
線が次工程に搬送されることを防止することができる。Accordingly, the bundled wire determined to be abnormal may be separately discharged at the time of being carried out. This makes it possible to prevent the wire with a defective terminal from being transported to the next process.
また、異常種別毎に異常判定信号を出力させ、各種別毎
に異常数をカウントするカウンタを設けてそのカウント
値を表示させるようにすることにより、異常に起因する
端子圧着装置の不具合箇所を知ることができる０例えば
、「樹脂かみＪのカンウド数が極端に多い場合には電線
の被覆を剥離するワイヤストリッパの異常であり、「芯
線こぼれ」のカウント数が多い場合には端子の圧着位置
の設定ミスの可能性がある等の判断をすることができる
。In addition, by outputting an abnormality judgment signal for each type of abnormality, providing a counter to count the number of abnormalities for each type, and displaying the count value, it is possible to know where the terminal crimping device is malfunctioning due to the abnormality. For example, if the number of ``resin wires J'' is extremely high, there is an abnormality in the wire stripper that strips the wire coating, and if the number of ``core wire spills'' is large, the crimping position of the terminal may be affected. It is possible to judge whether there is a possibility of a setting error, etc.
尚、本実施例においては、ラム６に加わる圧着時の反力
を検出する荷重センサとして歪み抵抗素子を使用したロ
ードセルを用いた場合について記述したが、これに限る
ものではなく、他の例えば、圧電変換素子、磁気抵抗素
子、静電容量素子等の荷重−電気変換素子を使用しても
良い。In this embodiment, a case has been described in which a load cell using a strain resistance element is used as a load sensor for detecting the reaction force applied to the ram 6 during crimping, but the present invention is not limited to this, and other examples such as Load-to-electricity conversion elements such as piezoelectric conversion elements, magnetoresistive elements, and capacitance elements may also be used.
更に、本実施例においては、ラム６に圧力センサを取り
付けたが、他の例えば、トグル装置のリンクや、アプリ
ケータの端子圧着用型押部等に取り付けてもよい。Further, in this embodiment, the pressure sensor is attached to the ram 6, but it may be attached to other means, such as a link of a toggle device, a terminal crimping part of an applicator, or the like.
（発明の効果）
以上説明したように本発明によれば、端子圧着台上で端
子圧着用型押部により被覆を剥離して導体を裸出した電
線の端末に端子を圧着する時の圧着力を荷重センサによ
り検出し、当該検出した圧着力の時間的変化をパターン
として捉え、当該パターンの変化により前記端子の圧着
状態の良否を判定するようにしたので、端子圧着時にお
ける圧着不良の検出、分類及び不良の程度の判別等を行
うことが可能である。また、検出部の構成が簡単であり
、異常の検出のための特別のスペースを取る必要もない
、更に、端子の種類や電線の種類毎に異なるアプリケー
タに交換する場合にも検出部の交換が不用であり、作業
性の向上が図られる等の優れた効果がある。(Effects of the Invention) As explained above, according to the present invention, the crimping force is applied when the terminal is crimped to the end of the electric wire where the conductor is exposed by peeling off the coating with the terminal crimping embossing part on the terminal crimping stand. is detected by a load sensor, the temporal change in the detected crimping force is captured as a pattern, and the quality of the crimped state of the terminal is determined based on the change in the pattern. It is possible to classify and determine the degree of defect. In addition, the configuration of the detection unit is simple, and there is no need to take up special space for detecting abnormalities.Furthermore, the detection unit can be replaced when changing to a different applicator for each type of terminal or wire type. It has excellent effects such as eliminating the need for and improving workability.
第１図は本発明に係る端子圧着電線の端子圧着不良検出
方法を通用した端子圧着装置の一実施例を示す一部切欠
正面図、第２図は第１図のラムの要部拡大図、第３図は
第２図に示す圧力センサの接続態様を示す回路図、第４
図は本発明を実施するためのパターン判定回路の一実施
例を示すブロック図、第５図及び第６図は端子圧着時に
おける信号波形のパターンの一実施例を示すグラフ、第
７図は電線の端末に端子を圧着した場合の各種の圧着状
態を示す図である。
１・・・端子圧着装置、２・・・プレスフレーム、３・
・・端子圧着台、４・・・アプリケータ、訃・・型押部
、６・・・ラム、７・・・トグル装置、８・・・端子配
給レバー、１０．１１．１１“・・・圧力センサ、１２
．１３．１２°、１３”・・・ロードセル、２０・・・
パターン判定回路、Ｔ・・・端子、Ｗ・・・電線。FIG. 1 is a partially cutaway front view showing an embodiment of a terminal crimping device using the terminal crimping defect detection method for a terminal crimped electric wire according to the present invention; FIG. 2 is an enlarged view of the main part of the ram in FIG. 1; Figure 3 is a circuit diagram showing the connection mode of the pressure sensor shown in Figure 2;
The figure is a block diagram showing one embodiment of a pattern determination circuit for carrying out the present invention, FIGS. 5 and 6 are graphs showing one embodiment of the signal waveform pattern during terminal crimping, and FIG. It is a figure which shows various crimping states when a terminal is crimped to the terminal of. 1... Terminal crimping device, 2... Press frame, 3...
...Terminal crimping stand, 4...Applicator, end...Essembling part, 6...Ram, 7...Toggle device, 8...Terminal distribution lever, 10.11.11"... pressure sensor, 12
．． 13.12°, 13”...Load cell, 20...
Pattern judgment circuit, T...terminal, W...wire.
Claims (1)
導体を裸出した電線の端末に端子を圧着する時の圧着力
を荷重センサにより検出し、当該検出した圧着力の時間
的変化をパターンとして捉え、当該パターンの変化によ
り前記端子の圧着状態の良否を判定することを特徴とす
る端子圧着電線の端子圧着不良検出方法。A load sensor detects the crimping force when a terminal is crimped to the end of a wire whose conductor is exposed by peeling off the coating using the terminal crimping embossing part on the terminal crimping stand, and changes over time in the detected crimping force. 1. A terminal crimping defect detection method for a terminal crimped electric wire, characterized in that the terminal crimping condition of the terminal is judged as a pattern, and the quality of the crimping condition of the terminal is determined based on a change in the pattern.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62114423A JPS63281071A (en) | 1987-05-13 | 1987-05-13 | Detecting method for defect in terminal crimping of terminal-crimped electric conductor |
| US07/190,101 US4914602A (en) | 1987-05-13 | 1988-05-04 | Method for detecting the molding defectiveness of a press-molded workpiece and a terminal press-bonding apparatus utilizing the same |
| CA000566358A CA1320758C (en) | 1987-05-13 | 1988-05-10 | Method for detecting the molding defectiveness of a press-molded workpiece and a terminal press-bonding apparatus utilizing the same |
| DE3886812T DE3886812T2 (en) | 1987-05-13 | 1988-05-13 | Method for determining stop defects when pressing a squeezed workpiece and a device using the same for attaching connecting elements. |
| KR1019880005612A KR970001957B1 (en) | 1987-05-13 | 1988-05-13 | Method for detecting the pressing detectiveness of a pressed workpiece and a terminal press-bonding apparatus utilizing the same |
| EP88304358A EP0291329B1 (en) | 1987-05-13 | 1988-05-13 | A method for detecting the pressing defectiveness of a pressed workpiece and a terminal press-bonding apparatus utilizing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62114423A JPS63281071A (en) | 1987-05-13 | 1987-05-13 | Detecting method for defect in terminal crimping of terminal-crimped electric conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63281071A true JPS63281071A (en) | 1988-11-17 |
| JPH0565111B2 JPH0565111B2 (en) | 1993-09-17 |
Family
ID=14637342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62114423A Granted JPS63281071A (en) | 1987-05-13 | 1987-05-13 | Detecting method for defect in terminal crimping of terminal-crimped electric conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63281071A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6722034B2 (en) | 2001-05-21 | 2004-04-20 | The Furukawa Electric Co., Ltd. | Method of connecting cable to connector |
| JP2012243677A (en) * | 2011-05-23 | 2012-12-10 | Furukawa Electric Co Ltd:The | Quality determination method and device of terminal crimping, and terminal crimping device |
| JP2013524463A (en) * | 2010-04-09 | 2013-06-17 | デルファイ・テクノロジーズ・インコーポレーテッド | Method for determining quality acceptance criteria using force signatures |
| JP2014056796A (en) * | 2012-09-14 | 2014-03-27 | Yazaki Corp | Inspection method for terminal crimped state and device therefor |
| JP5679495B2 (en) * | 2011-11-07 | 2015-03-04 | 新明和工業株式会社 | Automatic wire processing apparatus, automatic wire processing method and program |
-
1987
- 1987-05-13 JP JP62114423A patent/JPS63281071A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6722034B2 (en) | 2001-05-21 | 2004-04-20 | The Furukawa Electric Co., Ltd. | Method of connecting cable to connector |
| US6869305B2 (en) | 2001-05-21 | 2005-03-22 | The Furukawa Electric Co., Ltd. | Method of connecting flat cable to connecting terminal, connecting apparatus, and connecting state determining method |
| JP2013524463A (en) * | 2010-04-09 | 2013-06-17 | デルファイ・テクノロジーズ・インコーポレーテッド | Method for determining quality acceptance criteria using force signatures |
| JP2012243677A (en) * | 2011-05-23 | 2012-12-10 | Furukawa Electric Co Ltd:The | Quality determination method and device of terminal crimping, and terminal crimping device |
| JP5679495B2 (en) * | 2011-11-07 | 2015-03-04 | 新明和工業株式会社 | Automatic wire processing apparatus, automatic wire processing method and program |
| JP2014056796A (en) * | 2012-09-14 | 2014-03-27 | Yazaki Corp | Inspection method for terminal crimped state and device therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0565111B2 (en) | 1993-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR970001957B1 (en) | Method for detecting the pressing detectiveness of a pressed workpiece and a terminal press-bonding apparatus utilizing the same | |
| US5092026A (en) | Crimp height monitor | |
| US6819116B2 (en) | Terminal crimped state testing method | |
| DE60020304T2 (en) | Arrangement and method for checking the crimp quality of contacts and method for determining the friction wear of the Crimpmatritze | |
| JP6013847B2 (en) | Terminal crimping inspection method and apparatus | |
| JPS63281071A (en) | Detecting method for defect in terminal crimping of terminal-crimped electric conductor | |
| JP4070705B2 (en) | Terminal crimp failure detection device | |
| US7665224B2 (en) | Method of measuring metal terminal and apparatus for measuring the same | |
| JPH03118934A (en) | Crimping press for crimping conduction terminal to conductor and method for measuring quality of crimped terminal end thereof | |
| JPH041479B2 (en) | ||
| CN104885312A (en) | Pressure sensor attachment structure for terminal crimping device and crimping force inspection method employing same | |
| JPH01185457A (en) | Method for detecting inferiority in terminal press bonding of terminal press bonding electric wire | |
| JP2001035628A (en) | Method and device for judging terminal crimping condition | |
| KR20180079028A (en) | Terminal compressing apparatus and terminal pressing method | |
| JPH01176955A (en) | Detection of defective crimping terminal | |
| JPS63281373A (en) | Terminal connecting device with pressure | |
| JPH05109460A (en) | Method for detecting terminal crimp failure of terminal crimp electric wire | |
| JP3342941B2 (en) | Quality control method for crimp terminal of terminal crimping machine | |
| WO2017138115A1 (en) | Terminal crimping defect detection device | |
| WO2017138114A1 (en) | Abnormality monitoring device for terminal crimping device | |
| US11843215B2 (en) | Method to determine quality of termination of wire using thermal characteristics | |
| CN215771863U (en) | Terminal pressing device | |
| WO2012127767A1 (en) | Terminal crimping device | |
| JPH0234225A (en) | Detecting method for deep drawing defect | |
| CN112834098A (en) | Multichannel intelligent network terminal pressure detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070917 Year of fee payment: 14 |