JPH02129909A - Discrimination between right side and wrong side of lead frame - Google Patents
Discrimination between right side and wrong side of lead frameInfo
- Publication number
- JPH02129909A JPH02129909A JP63282770A JP28277088A JPH02129909A JP H02129909 A JPH02129909 A JP H02129909A JP 63282770 A JP63282770 A JP 63282770A JP 28277088 A JP28277088 A JP 28277088A JP H02129909 A JPH02129909 A JP H02129909A
- Authority
- JP
- Japan
- Prior art keywords
- lead frame
- section
- laser beam
- punched
- photosensitive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims description 7
- 230000001788 irregular Effects 0.000 abstract 1
- 238000004080 punching Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はリードフレームの表裏判別方法に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for determining front and back sides of a lead frame.
（従来の技術）
チップ部品は、例えばリードフレームを打ち抜き、その
箇所に素子を接続し、樹脂モールド等して製造される。(Prior Art) Chip components are manufactured by, for example, punching out a lead frame, connecting elements to the punched portions, and molding the chips with resin.
固体電解コンデンサ等のチップ部品は極性を有していて
方向性があるために、樹脂モールド作業や捺印作業、タ
イバーカット作業、エージング作業、特性のチエツク作
業の前にリードフレームの表裏を判別する必要がある。Chip parts such as solid electrolytic capacitors have polarity and directionality, so it is necessary to distinguish between the front and back of the lead frame before resin molding, stamping, tie bar cutting, aging, and characteristic checking. There is.
リードフレームの表裏を判別するには、従来、手作業や
パターン認識を用いた装置が用いられていた。Conventionally, manual processing or devices using pattern recognition have been used to determine the front and back sides of lead frames.
（発明が解決しようとする課題）
しかし、前者の場合には、判別に時間がかかり、ムラが
あり、ミスを生じ易い欠点がある。また、後者の場合に
は、認識作業の際に通常リードフレームを停止する必要
があり断続運転となって非効率的で、停止位置の精度が
高いことが必要で制御が複雑となる等のために非常に高
価となる欠点がある。(Problems to be Solved by the Invention) However, in the former case, there are disadvantages in that the discrimination takes time, is uneven, and is prone to errors. In addition, in the latter case, it is usually necessary to stop the lead frame during recognition work, resulting in intermittent operation, which is inefficient, and requires high precision in the stopping position, which complicates control. The disadvantage is that it is very expensive.
本発明の目的は、以上の欠点を改良し、リードフレーム
の表裏の判別作業が容易で正確に早く行なえかつ安価な
リードフレームの表裏判別方法を提供するものである。SUMMARY OF THE INVENTION An object of the present invention is to improve the above-mentioned drawbacks and to provide a method for determining the front and back sides of a lead frame, which is easy, accurate, quick, and inexpensive.
（課題を解決するための手段）
本発明は、上記の目的を達成するために、打ち抜き加工
されたリードフレームの表裏判別方法において、打ち抜
き部分の角部にレーザビームを照射しその反射光の変化
によりリードフレームの表裏を判別しうるリードフレー
ムの表裏判別方法を提供するものである。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for determining the front and back sides of a punched lead frame, in which a laser beam is irradiated to the corner of the punched part, and the reflected light changes. The present invention provides a method for determining the front and back sides of a lead frame by which the front and back sides of a lead frame can be determined.
（作用）
リードフレームをプレス等により打ち抜き加工した場合
、その打ち抜き部分の角部は、打ち抜き方向によってそ
の形状が異なり、プレス等が入っていく表側がＲ状にそ
してプレス等が抜ける裏側が尖った状態になる。(Function) When a lead frame is punched using a press, etc., the shape of the corner of the punched part differs depending on the punching direction, with the front side where the press enters being rounded and the back side where the press exits being sharp. become a state.
この角部にレーザービームを照射すると表側と裏側とで
は反射光が異なり、前者では収束した反射光が得られ、
後者の場合には乱反射してしまう。When this corner is irradiated with a laser beam, the reflected light will be different on the front side and the back side, and the former will have a converged reflected light.
In the latter case, diffuse reflection will occur.
従って、予めレーザービームの照射角度を決め、所定の
位置に受光部を設置しておくことにより、その反射光に
よってリードフレームの表裏を判別できる。Therefore, by determining the irradiation angle of the laser beam in advance and installing the light receiving section at a predetermined position, the front and back sides of the lead frame can be determined by the reflected light.
（実施例） 以下、本発明を実施例に基づいて説明する。(Example) Hereinafter, the present invention will be explained based on examples.
先ず、第１図に示す通り、リードフレーム１をプレス２
により打ち抜く。打ち抜き部分３の角部４は、リードフ
レーム１の表側がＲ状になりそして裏側が尖った状態に
なる。First, as shown in FIG.
Punch out. The corner portion 4 of the punched portion 3 has a rounded shape on the front side of the lead frame 1 and a sharp shape on the back side.
次に、この打ち抜き加工後のリードフレーム１を搬送ベ
ルト５に乗せ所定の位置に搬送する。６は、この搬送中
のリードフレーム１にレーザービームを照射しうる光電
スイッチであり、レーザービームの投光部７とその受光
部８とを有している。Next, the lead frame 1 after the punching process is placed on a conveyor belt 5 and conveyed to a predetermined position. Reference numeral 6 denotes a photoelectric switch capable of irradiating the lead frame 1 during transport with a laser beam, and has a laser beam projecting section 7 and a light receiving section 8 thereof.
そして、この光電スイッチ６の投光部７からレーザービ
ームを送り孔として用いられる打ち抜き部分３の角部４
に連続的に照射する。このとき、角部４が表側であれば
反射光が受光部８に入射し、裏側であれば乱反射するた
めに、受光部８には入射光が得られない。The corner portion 4 of the punched portion 3 is used as a feed hole for transmitting a laser beam from the light projecting portion 7 of the photoelectric switch 6.
irradiate continuously. At this time, if the corner 4 is on the front side, the reflected light will enter the light receiving section 8, and if it is on the back side, the reflected light will be diffusely reflected, so that no incident light will be obtained on the light receiving section 8.
従って、受光部８への入射光の有無によってリードフレ
ームの表裏が判別できる。Therefore, depending on the presence or absence of light incident on the light receiving section 8, it is possible to determine whether the lead frame is front or back.
なお、上記の実施例では、素子を接続していないリード
フレームの表裏を判別したが、素子を接続したリードフ
レームについても、送り孔等は素子の接続前と同じであ
り、この孔の角部にレーザービームを照射することによ
り、表裏の判別が可能である。In the above example, the front and back sides of the lead frame to which no element is connected were determined, but the feed holes etc. of the lead frame to which the element is connected are the same as before the element was connected, and the corner of this hole is It is possible to distinguish between the front and the back by irradiating the surface with a laser beam.
（発明の効果）
以上の通り、本発明によれば、リードフレームの打ち抜
き部分の角部にレーザービームを照射し、その反射光の
相違により表裏を判別しているために、判別作業が容易
で、正確に早く行なえかつ安価なリードフレームの表裏
判別方法が得られる。(Effects of the Invention) As described above, according to the present invention, the laser beam is irradiated to the corner of the punched part of the lead frame, and the front and back sides are discriminated based on the difference in the reflected light, making the discrimination work easy. Therefore, an accurate, quick and inexpensive method for determining the front and back sides of a lead frame can be obtained.
第１図は本発明の実施例のリードフレームを打ち抜き加
工している状態の図、第２図は第１図のリードフレーム
を搬送ベルトで搬送している状態の図を示す。
１・・・リードフレーム、 ３・・・打ち抜き部分、４
・・・角部、 ６・・・光電スイッチ、７・・・投光部
、 ８・・・受光部。
第１図
特許出願人 日立コンデンサ株式会社FIG. 1 shows a state in which a lead frame according to an embodiment of the present invention is being punched, and FIG. 2 shows a state in which the lead frame of FIG. 1 is being conveyed by a conveyor belt. 1...Lead frame, 3...Punching part, 4
...Corner part, 6...Photoelectric switch, 7...Light emitter, 8...Light receiver. Figure 1 Patent applicant Hitachi Capacitor Corporation
Claims (1)
法において、打ち抜き部分の角部にレーザービームを照
射しその反射光の変化によりリードフレームの表裏を判
別しうるリードフレームの表裏判別方法。(1) A method for determining the front and back sides of a lead frame that has been punched out, in which a laser beam is irradiated to the corner of the punched part and the front and back sides of the lead frame can be determined based on changes in the reflected light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63282770A JPH02129909A (en) | 1988-11-09 | 1988-11-09 | Discrimination between right side and wrong side of lead frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63282770A JPH02129909A (en) | 1988-11-09 | 1988-11-09 | Discrimination between right side and wrong side of lead frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02129909A true JPH02129909A (en) | 1990-05-18 |
Family
ID=17656848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63282770A Pending JPH02129909A (en) | 1988-11-09 | 1988-11-09 | Discrimination between right side and wrong side of lead frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02129909A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0423129U (en) * | 1990-06-15 | 1992-02-26 | ||
| DE10246500A1 (en) * | 2002-10-04 | 2004-04-15 | Köberlein GmbH | Stamped part edge position determination method in which an optical arrangement is used to detect the narrow chamfered edge of stamped edge of the part with an optical arrangement of light source and sensor at right angles |
| JPWO2016194565A1 (en) * | 2015-06-05 | 2018-03-29 | 芝浦メカトロニクス株式会社 | Tablet printing apparatus and tablet printing method |
| CN109668889A (en) * | 2019-01-28 | 2019-04-23 | 成都宏明双新科技股份有限公司 | A kind of front and back sides detection method of symmetrical micro- bending sheet parts |
-
1988
- 1988-11-09 JP JP63282770A patent/JPH02129909A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0423129U (en) * | 1990-06-15 | 1992-02-26 | ||
| DE10246500A1 (en) * | 2002-10-04 | 2004-04-15 | Köberlein GmbH | Stamped part edge position determination method in which an optical arrangement is used to detect the narrow chamfered edge of stamped edge of the part with an optical arrangement of light source and sensor at right angles |
| JPWO2016194565A1 (en) * | 2015-06-05 | 2018-03-29 | 芝浦メカトロニクス株式会社 | Tablet printing apparatus and tablet printing method |
| CN109668889A (en) * | 2019-01-28 | 2019-04-23 | 成都宏明双新科技股份有限公司 | A kind of front and back sides detection method of symmetrical micro- bending sheet parts |
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