JPS6252803B2 - - Google Patents
Info
- Publication number
- JPS6252803B2 JPS6252803B2 JP55137133A JP13713380A JPS6252803B2 JP S6252803 B2 JPS6252803 B2 JP S6252803B2 JP 55137133 A JP55137133 A JP 55137133A JP 13713380 A JP13713380 A JP 13713380A JP S6252803 B2 JPS6252803 B2 JP S6252803B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- light
- electric wire
- polarizing plate
- crimped
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
【発明の詳細な説明】
この発明は、被覆電線の端部被覆をはぎ取つた
部分に端子を圧着してなる電線における端子圧着
状態の良否を光学的に検査する装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for optically inspecting the quality of terminal crimping of an electric wire in which a terminal is crimped to a portion of a covered electric wire whose end coating has been stripped off.
従来、被覆電線に端子を圧着するには、まず公
知の被覆電線切断・被覆はぎ取り機により、被覆
電線をある一定の長さに切断するとともにその端
部の被覆をある一定長さ分だけはぎ取り、そして
公知の端子圧着機により一定形状および寸法の端
子を前記はぎ取つた部分の所定の位置に正確に圧
着する必要がある。すなわち第１図には端子１
（実施例では雌端子であり、第１つかみ部１ａ、
第２つかみ部１ｂ、雄端子との接続部１ｃとより
なる）を被覆電線２の端部に圧着した状態を示し
ているが、この場合、つかみ部１ａは、電線２の
被覆部２ａを全周に渡り、かつその被覆端部から
ある長さ分Ｌだけ余して確実につかみ、またつか
み部１ｂは、電線２の導体部２ｂを全周に渡り確
実につかむようにして圧着する必要がある。しか
しながら端子圧着の際、まれではあるが前述のつ
かみ位置を逸脱し、例えばつかみ部１ａが導体部
２ｂの一部をもつかんだり、あるいはつかみ部１
ｂが被覆部２ａの一部をもつかんだり、あるいは
またつかみ部１ａが被覆部２ａを全周に渡つて確
実につかまなかつたりして、端子圧着不良を生じ
ることがある。従来端子圧着状態の良否は人間の
目によつて判別されており、その作業が面倒であ
つた。 Conventionally, in order to crimp a terminal onto an insulated wire, first the insulated wire is cut to a certain length using a known insulated wire cutting/stripping machine, and the coating at the end of the insulated wire is stripped off to a certain length. Then, it is necessary to accurately crimp a terminal of a predetermined shape and size at a predetermined position on the stripped portion using a known terminal crimping machine. In other words, in Figure 1, terminal 1
(In the embodiment, it is a female terminal, and the first gripping portion 1a,
The second gripping portion 1b and the connecting portion 1c with the male terminal are shown crimped to the end of the covered wire 2. In this case, the gripping portion 1a completely covers the covering portion 2a of the wire 2. It is necessary to securely grip the conductor portion 2b of the electric wire 2 over the entire circumference and to securely grip the conductor portion 2b of the electric wire 2 over the entire circumference. However, when crimping the terminal, although it is rare, the gripping position may deviate from the above-mentioned gripping position, for example, the gripping portion 1a may grip a part of the conductor portion 2b, or the gripping portion 1a may grip a part of the conductor portion 2b.
If the gripping portion 1a does not grip a part of the covering portion 2a, or the gripping portion 1a does not securely grip the covering portion 2a over the entire circumference, terminal crimping may occur. Conventionally, the quality of terminal crimping has been determined by human eyes, which is a laborious process.
この発明は前述事情に鑑みなされたものであ
り、一定形状および寸法の端子１を、被覆はぎ取
り長さや外径や導体部２ｂの径が一定の電線２に
圧着した端子圧着電線の端子圧着状態の良否を光
学的に検査する装置を提供せんとするものであ
り、以下実施例を詳述する。 This invention was made in view of the above-mentioned circumstances, and it is a terminal crimped state of a terminal crimped electric wire in which a terminal 1 of a certain shape and size is crimped to an electric wire 2 whose sheath stripping length, outer diameter, and conductor portion 2b diameter are constant. The present invention aims to provide an apparatus for optically inspecting quality, and examples thereof will be described in detail below.
３は、光源である。 3 is a light source.
４は、光源３と光フアイバ５を介して接続した
公知の集光レンズ内蔵筒体である。この筒体４先
端は、検査すべき端子圧着電線の端子圧着部に向
けられている。 Reference numeral 4 denotes a known cylinder with a built-in condenser lens connected to the light source 3 via an optical fiber 5. The tip of this cylindrical body 4 is directed toward the terminal crimped portion of the terminal crimped electric wire to be inspected.
６は、筒体４と検査すべき端子圧着電線との間
において、投光軸C1上に配置された第１偏光板
である。 Reference numeral 6 denotes a first polarizing plate disposed on the light projection axis C1 between the cylindrical body 4 and the terminal crimped electric wire to be inspected.
そして前記３〜６の構成により投光系Ａが構成
されている。 The projection system A is configured by the configurations 3 to 6 above.
７は、投光軸C1に対する反射光軸C2と同軸上
に配置した受光体であり、図においてその下面が
受光面７ａとして形成され、多数の受光素子が配
列されている。そして受光体７には、受光面７ａ
を一定方向（端子圧着電線の軸方向）に走査し
て、連続波形信号に変換する公知のスキヤン手段
７ｂが内蔵されている。 Reference numeral 7 denotes a photoreceptor disposed coaxially with the reflection optical axis C2 relative to the light projection axis C1 . In the figure, the lower surface of the photoreceptor is formed as a light-receiving surface 7a , and a large number of light-receiving elements are arranged. The photoreceptor 7 has a light-receiving surface 7a.
A known scanning means 7b is built-in for scanning in a fixed direction (the axial direction of the terminal crimped wire) and converting it into a continuous waveform signal.
８は、端子圧着電線と受光面７ａとの間におい
て、反射光軸C2上に配置した第２偏光板であ
る。 8 is a second polarizing plate disposed on the reflection optical axis C2 between the terminal crimped electric wire and the light receiving surface 7a.
偏光板８は、第１偏光板６とはほぼ90度の偏光
方向差が与えられている。 The polarizing plate 8 is given a polarization direction difference of approximately 90 degrees from the first polarizing plate 6.
９は、反射光軸C2上に、かつ受光面７ａと偏
光板８との間に配置した集光レンズである。 Reference numeral 9 denotes a condenser lens arranged on the reflection optical axis C 2 and between the light receiving surface 7 a and the polarizing plate 8 .
そして前記７〜９の構成により受光系Ｂが構成
されている。 The light receiving system B is configured by the configurations 7 to 9 above.
１０は、コンピユータのメモリであり、端子圧
着電線の端子圧着状態を良とする、一定形状およ
び寸法の端子１と被覆を一定長さ分だけはぎ取つ
た電線２との相互の限界位置｛第３，４図イ参
照｝において、手段７ｂから出力されるべき信号
｛第３，４図ロ参照｝が情報として予め記録され
ている。 Reference numeral 10 is a memory of the computer, and the mutual limit position {third , 4A}, the signal to be output from the means 7b {see FIGS. 3 and 4B} is recorded in advance as information.
１１は、手段７ｂからの出力情報が、メモリ１
０に記録された情報と比較して許容内にあるか否
か、すなわち手段７ｂからの出力情報において、
被覆端部Ｌの長さに相当する部分が、第３図ロの
l1よりも小で、かつ第４図ロのl2よりも大である
か否かを判別する手段である。 11, the output information from the means 7b is stored in the memory 1.
Whether or not the output information from the means 7b is within tolerance compared with the information recorded in
The part corresponding to the length of the covering end L is shown in Figure 3 (b).
This is a means for determining whether it is smaller than l 1 and larger than l 2 in Figure 4 (b).
１２は、手段１１における判別結果、前記手段
７ｂからの出力情報において、被覆端部Ｌの長さ
に相当する部分が、l1より大またはl2より小であ
つたときに、警報やランプ表示する公知の警告手
段である。 Reference numeral 12 indicates an alarm or lamp display when, as a result of the determination in the means 11, the portion corresponding to the length of the covering end L is larger than l 1 or smaller than l 2 in the output information from the means 7b. This is a known warning means.
さらにこの実施例の作用を述べる。 Furthermore, the operation of this embodiment will be described.
まず端子圧着電線を、第２図のように、所定の
位置に、かつ端子１の各つかみ部１ａ，１ｂの端
部が上向きとなるようにして固定する。そして投
光系Ａにより端子圧着電線の端子圧着部を下向き
に照射する。このとき筒体４からの光は、偏光板
６により偏光状態となつて前記端子圧着部を照射
する。するとその反射光は光軸C2に沿い、偏光
板８、レンズ９を経て受光面７ａに至る。このと
き前記反射光のうち端子１および導体部２ｂから
の光は、ほぼ偏光板６による前記偏光状態のまま
反射されるが、被覆部２ａからの光は、乱反射光
となる。従つて前記反射光が偏光板８を通過する
際には、偏光板８が偏光板６とは偏光方向差がほ
ぼ90度あることにより、端子１および導体部２ｂ
からの反射光はほとんど通過せず、被覆部２ａか
らの反射光（乱反射光）が偏光状態となつて受光
面７ａに到達することになる。 First, the terminal crimped electric wire is fixed in a predetermined position as shown in FIG. 2, with the ends of the gripping portions 1a and 1b of the terminal 1 facing upward. Then, the terminal crimping portion of the terminal crimping electric wire is illuminated downward by the light projecting system A. At this time, the light from the cylinder 4 is polarized by the polarizing plate 6 and irradiates the terminal crimping portion. Then, the reflected light passes along the optical axis C2 , passes through the polarizing plate 8 and the lens 9, and reaches the light receiving surface 7a. At this time, among the reflected light, the light from the terminal 1 and the conductor portion 2b is reflected by the polarizing plate 6 while remaining in the polarized state, but the light from the covering portion 2a becomes diffusely reflected light. Therefore, when the reflected light passes through the polarizing plate 8, since the polarizing plate 8 has a polarization direction difference of approximately 90 degrees from the polarizing plate 6, the terminal 1 and the conductor portion 2b
Almost no reflected light from the covering portion 2a passes through, and the reflected light (diffusely reflected light) from the covering portion 2a reaches the light-receiving surface 7a in a polarized state.
そして受光面７ａの前記受光素子により光を電
気信号に変換し、さらには手段７ｂにより端子圧
着電線の軸方向にスキヤンして連続波形信号に変
換する。さらにはその信号をメモリ１０に予め記
録しておいた２種の情報｛第３，４図ロ参照｝と
比較し、被覆端部Ｌの長さに相当する部分の信号
がl1より小で、かつl2より大であるか否かを判別
する。もし被覆端部Ｌの長さに相当する部分の信
号がl1より大かまたはl2より小であれば、つかみ
部１ｂが被覆端部の一部をつかんでいたり、つか
み部１ａが導体部２ｂの一部をつかんでいたりす
る可能性を有することになり、不良品として手段
１２により警告が発せられることになる。 The light is converted into an electrical signal by the light receiving element on the light receiving surface 7a, and further converted into a continuous waveform signal by scanning in the axial direction of the terminal crimped wire by means 7b. Furthermore, the signal is compared with two types of information pre-recorded in the memory 10 {see Figures 3 and 4 B}, and it is determined that the signal of the portion corresponding to the length of the covering end L is smaller than l1 . , and l is greater than 2 . If the signal of the portion corresponding to the length of the sheathing end L is larger than l 1 or smaller than l 2 , the gripping portion 1b is gripping a part of the sheathing end, or the gripping portion 1a is holding the conductor. There is a possibility that a part of 2b may be grabbed, and a warning will be issued by the means 12 as a defective product.
また第５図イのように、端子１と電線２との相
互位置は良であつても、つかみ部１ａが被覆部２
ａを全周に渡つて確実につかんでいない場合は、
手段７ｂからの出力信号は第５図ロのようにな
り、被覆端部Ｌの長さに相当する部分がきわめて
大となることになり、不良品として手段１２によ
り警告が発せられる。 Furthermore, as shown in FIG.
If you are not gripping a securely all the way around,
The output signal from the means 7b becomes as shown in FIG. 5B, and the portion corresponding to the length of the covering end L becomes extremely large, and a warning is issued by the means 12 as a defective product.
前述説明は実施例であり、各構成の均等物との
置換もこの発明の技術範囲に含まれることはもち
ろんである。 The above description is only an example, and it goes without saying that the technical scope of the present invention also includes the replacement of each component with an equivalent.
この発明は前述したように、端子１および導体
部２ｂからの反射と被覆部２ａからの乱反射にお
ける偏光作用の相違を利用したので、光軸C1，
C2上に相互にほぼ90度の偏光方向差を与えて偏
光板６，８を配置することにより、受光面７ａに
は、端子１および導体部２ｂに対応する部分と被
覆部２ａに対応する部分との明暗が明確に映し出
される。従つてこれをスキヤンして電気的な連続
波形信号に変換し、この信号のうち被覆端部Ｌの
長さに相当する部分の値が予めコンピユータに記
録しておいた限界情報値l1，l2よりも大か小かを
判別すれば、端子圧着状態の良否を正確に検査す
ることができる。 As described above, this invention utilizes the difference in polarization effect between the reflection from the terminal 1 and the conductor portion 2b and the diffused reflection from the covering portion 2a, so that the optical axis C 1 ,
By arranging the polarizing plates 6 and 8 on C 2 with a polarization direction difference of approximately 90 degrees, the light receiving surface 7a has a portion corresponding to the terminal 1 and the conductor portion 2b and a portion corresponding to the covering portion 2a. The contrast between the parts is clearly displayed. Therefore, this is scanned and converted into an electrical continuous waveform signal, and the value of the portion of this signal corresponding to the length of the covering end L is the limit information value l 1 , l recorded in advance in the computer. By determining whether it is larger or smaller than 2 , it is possible to accurately test whether the terminal is crimped.
図はいずれもこの発明の一実施例を示し、第１
図は検査すべき端子圧着電線の説明図、第２図は
全体概略説明図、第３，４図の各イは電線と端子
との相互圧着位置において端子圧着状態を良とす
る限界位置説明図、各ロはこれら限界位置におい
て走査手段から出力される連続波形信号説明図、
第５図は作用説明図、である。
図において、１……端子、２……電線、３……
光源、６……第１偏光板、Ａ……投光系、７ａ…
…受光面、Ｂ……受光系、７ｂ……走査手段、８
……第２偏光板、１０……コンピユータのメモ
リ、１１……判別手段、である。
Each of the figures shows an embodiment of the present invention.
The figure is an explanatory diagram of the terminal crimped electric wire to be inspected, Figure 2 is an overall schematic explanatory diagram, and each A in Figures 3 and 4 is an explanatory diagram of the limit position at which the terminal crimping condition is good at the mutual crimping position of the electric wire and terminal. , each b is an explanatory diagram of a continuous waveform signal output from the scanning means at these limit positions,
FIG. 5 is an explanatory diagram of the action. In the figure, 1... terminal, 2... electric wire, 3...
Light source, 6...first polarizing plate, A...light projection system, 7a...
... Light receiving surface, B... Light receiving system, 7b... Scanning means, 8
. . . second polarizing plate, 10 . . . computer memory, 11 . . . discriminating means.
Claims (1)
第１偏光板を介在させた投光系と、前記第１偏光
板とはほぼ90度の偏光方向差を有する第２偏光板
を前記端子圧着電線と受光面との間に介在させた
受光系と、前記受光面を一定方向に走査する手段
と、この走査手段の出力情報が予めコンピユータ
に登録された情報と比較してその許容内か否かを
判別する手段とを備えてなる、端子圧着電線の端
子圧着状態検査装置。1 A light projection system in which a first polarizing plate is interposed between a light source and a terminal crimped electric wire that is an object to be irradiated, and a second polarizing plate having a polarization direction difference of approximately 90 degrees from the first polarizing plate. A light-receiving system interposed between the terminal-crimped electric wire and the light-receiving surface, a means for scanning the light-receiving surface in a fixed direction, and an output information of this scanning means compared with information registered in advance in a computer to determine whether the information is within the allowable range. An apparatus for inspecting a terminal crimped state of a terminal crimped electric wire, comprising means for determining whether or not the terminal is crimped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13713380A JPS5761903A (en) | 1980-09-30 | 1980-09-30 | Inspecting device for terminal press-fixed of electric wire press-fixed with terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13713380A JPS5761903A (en) | 1980-09-30 | 1980-09-30 | Inspecting device for terminal press-fixed of electric wire press-fixed with terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5761903A JPS5761903A (en) | 1982-04-14 |
| JPS6252803B2 true JPS6252803B2 (en) | 1987-11-06 |
Family
ID=15191583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13713380A Granted JPS5761903A (en) | 1980-09-30 | 1980-09-30 | Inspecting device for terminal press-fixed of electric wire press-fixed with terminal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5761903A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157512A (en) * | 1983-02-28 | 1984-09-06 | Matsushita Electric Works Ltd | Optical position detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2824583C3 (en) * | 1978-06-05 | 1985-10-03 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Reflective light barrier for the detection of highly reflective objects within a monitoring path traversed by a bundle of rays |
-
1980
- 1980-09-30 JP JP13713380A patent/JPS5761903A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5761903A (en) | 1982-04-14 |
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