JPH01243565A - Lead cutting apparatus for semiconductor device - Google Patents

Lead cutting apparatus for semiconductor device

Info

Publication number
JPH01243565A
JPH01243565A JP6969388A JP6969388A JPH01243565A JP H01243565 A JPH01243565 A JP H01243565A JP 6969388 A JP6969388 A JP 6969388A JP 6969388 A JP6969388 A JP 6969388A JP H01243565 A JPH01243565 A JP H01243565A
Authority
JP
Japan
Prior art keywords
lead
punch
bending
mold
hanging pin
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
Application number
JP6969388A
Other languages
Japanese (ja)
Inventor
Kenji Taguchi
健二 田口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP6969388A priority Critical patent/JPH01243565A/en
Publication of JPH01243565A publication Critical patent/JPH01243565A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To enhance the accuracy of a cutting operation and to eliminate an increase in the cutting and working time by a method wherein a suspension pin lead punch is installed at a lower mold and a lead of a semiconductor device placed on a pad of the lower mold is cut by using the suspension pin lead punch. CONSTITUTION:A suspension pin lead punch 11 is supported by a bending die 12 and attached to a lower-mold die set 107 via a lower-mold holder 13. A lead 201 and a suspension pin lead 204 of an IC are placed on an upper-face shoulder part of a pad 14. An upper mold including a bending punch 15 attached to an upper-mold holder 103 is lowered down to a prescribed position. The punch 15 grips and fixes the lead 201 against the lead 201 and the lead 204 which protrude toward the side of an outer package 203 of the IC; the punch 11 is brought into contact with a tip of the punch 15 and cuts the lead 204. By this setup, the accuracy of a cutting operation can be enhanced; an increase in the curring and working time can be eliminated.

Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) 本発明は半導体装置のリード切断装置に係り、特にリー
ドフレームによって構成されるIC。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a lead cutting device for a semiconductor device, and particularly to an IC formed of a lead frame.

LED (発光素子)等のリード切断装置に適用される
ものである。
This is applied to a lead cutting device for LEDs (light emitting devices) and the like.

(従来の技術) リードフレームを用いる半導体装置の製造において、リ
ードフレームに半導体チップボンディング、ワイヤボン
ディング等を施し、ついでリードフレームのアウタリー
ド部(以下、リードと略称)を残して樹脂モールドを施
したのち、リードに所定の切断を施した状態を第2図に
示す。同図において、200はリードフレーム、201
はリードフレームのリードで、切断と折曲等の成形加工
が施されてリードフレームのフレーム部202とは連接
されていない。また、203は樹脂モールドにより形成
された樹脂外囲器で、−例としてこの外周に複数のリー
ド201を突出した製品の要部を構成するが、まだ、吊
りピンリード204によって前記リードフレームのフレ
ーム部202と接続支持されている。
(Prior art) In the manufacture of semiconductor devices using lead frames, semiconductor chip bonding, wire bonding, etc. are performed on the lead frame, and then resin molding is performed leaving the outer lead portions (hereinafter referred to as leads) of the lead frame. FIG. 2 shows a state in which the lead has been cut in a predetermined manner. In the same figure, 200 is a lead frame, 201
is a lead of the lead frame, which has been subjected to forming processes such as cutting and bending, and is not connected to the frame portion 202 of the lead frame. Further, 203 is a resin envelope formed by resin molding, and constitutes the main part of the product with a plurality of leads 201 protruding from the outer periphery, for example, but the frame part of the lead frame is still 202 and is connected and supported.

次に、前記フレーム部202を切除し、第3図に示され
る製品の一例のICが得られる。同図において、204
aは吊りピンリード切断残部を示し、リード201はい
ずれも折曲点201a、201bでほぼ直角に折曲げさ
れ、先端に若干外方へ開拡している。
Next, the frame portion 202 is cut out to obtain an IC as an example of the product shown in FIG. 3. In the same figure, 204
A indicates the cut remaining part of the hanging pin lead, and both leads 201 are bent at almost right angles at bending points 201a and 201b, and are slightly expanded outward at the tips.

叙上の半導体装置の製造に用いられる従来のリード切断
装置を第4図によって説明する。
A conventional lead cutting device used for manufacturing the above-mentioned semiconductor device will be explained with reference to FIG.

第4図において、101は吊りピンリードパンチで、曲
げパンチ102によって支持され、上型ホルダ103を
介して上型ダイセット104に一体に取着されている。
In FIG. 4, reference numeral 101 denotes a hanging pin lead punch, which is supported by a bending punch 102 and is integrally attached to an upper mold die set 104 via an upper mold holder 103.

上記上型に対向する下型は一例のICのり−ド201を
支持する曲げダイ105が下型ホルダ10Bを介して下
型ダイセット107に一体に取着されてする。また、未
成形のICを載置するパッド108は曲げダイ105と
唐接し、かつ、リフタピン109によって支持され、こ
のリフタピン109は下方の止めねじ110で下型ダイ
セット107の下端に固定されたスプリング111の上
面の弾力によって前記下型ホルダ106との間に空隙を
有している。上記パッド10Bはその上面に凹部1 o
aaを備え、ここに−例のICの樹脂外囲器203を装
入支持するとともに上面肩部の溝108bにICの吊り
ピンリード204部を載せるようになっている。
The lower die facing the upper die includes a bending die 105 that supports an example of an IC board 201 and is integrally attached to a lower die set 107 via a lower die holder 10B. Further, the pad 108 on which the unmolded IC is placed is in direct contact with the bending die 105 and is supported by a lifter pin 109, which is a spring fixed to the lower end of the lower die set 107 by a lower set screw 110. Due to the elasticity of the upper surface of the mold 111, there is a gap between the mold holder 106 and the lower mold holder 106. The pad 10B has a recess 1 o on its upper surface.
aa, into which the resin envelope 203 of the IC of the example is inserted and supported, and the hanging pin lead 204 of the IC is placed in the groove 108b of the upper shoulder.

叙上の構成において、パッド108上面から側方へ突出
したリード201、吊りピンリード204に対し、下降
する曲げパンチ103がリード201を挟持固定すると
同時に吊りピンリードパンチ101がパッド108の上
面肩部の溝108bに突入し、吊りピンリード204を
切断する。なお、上記パッド108はスプリング111
で支持されているので、リードの挟持固定の際の過大な
加圧を防止し、続いてリードの成形を達成することがで
きる。ざらに、この機構はリードが曲げパンチ103で
折曲されたのち生じやすいリードと曲げダイ105との
「食いつき」に対し脱着させる機能も兼ねている。
In the configuration described above, the lowering bending punch 103 clamps and fixes the lead 201 and the hanging pin lead 204 protruding laterally from the upper surface of the pad 108, and at the same time, the hanging pin lead punch 101 clamps and fixes the lead 201 on the shoulder of the upper surface of the pad 108. It enters the groove 108b and cuts the hanging pin lead 204. Note that the pad 108 has a spring 111.
Since the lead is supported by the lead, excessive pressure can be prevented when the lead is clamped and fixed, and the lead can subsequently be formed. Roughly speaking, this mechanism also has the function of attaching and detaching the lead and the bending die 105 against the "bite" that tends to occur after the lead is bent by the bending punch 103.

(発明が解決しようとする課題) 叙上の従来の装置によれば、吊りピンリードパンチが上
型に取着されているため、樹脂モールド時に発生するリ
ードフレームの変形、反(そ)す、歪等によって、吊り
ピンリードパンチ101が吊りピンリードの切断予定部
を正確にねらうことができず、更には、樹脂外囲器の欠
け、割れ、クラック等の不良事故が多発する問題があっ
た。
(Problems to be Solved by the Invention) According to the conventional device described above, since the hanging pin lead punch is attached to the upper mold, deformation and warping of the lead frame that occurs during resin molding, Due to distortion, etc., the suspension pin lead punch 101 cannot accurately aim at the intended cutting portion of the suspension pin lead, and furthermore, there is a problem in that failures such as chipping, cracking, and cracking of the resin envelope frequently occur.

この発明は上記従来の問題点に鑑み、半導体装置のリー
ド切断装置の改良構造を提供する。
In view of the above-mentioned conventional problems, the present invention provides an improved structure of a lead cutting device for a semiconductor device.

〔発明の構成〕[Structure of the invention]

(課題を解決するための手段) 本発明にかかる半導体装置のリード切断装置は、上型ダ
イセットに上型ホルダを介して取着されリードフレーム
のリードに曲げ加工を施すための曲げパンチを有する上
型と、下型ダイセットに下型ホルダを介して取着された
曲げパッドの外方に、曲げダイにより固定され、かつリ
ードフレームの吊りピンリードを切断する吊りピンリー
ドカットパンチを有する下型とを具備したことを特徴と
する。
(Means for Solving the Problems) A lead cutting device for a semiconductor device according to the present invention includes a bending punch attached to an upper die set via an upper die holder for bending the leads of a lead frame. A lower die that is fixed by a bending die to the outside of a bending pad attached to the upper die and the lower die set via a lower die holder, and has a hanging pin lead cut punch for cutting the hanging pin lead of the lead frame. It is characterized by having the following.

(作 用) この発明にかかる半導体装置のリード切断装置は吊りピ
ンリードパンチを下型に設け、下型のパッドに載置され
た半導体装置のリードを上記吊りピンリードパンチによ
り切断するので、従来の方式に比し、切断の精度が向上
し、切断加工時間の増大もなく、製品の歩留も向上する
(Function) The lead cutting device for a semiconductor device according to the present invention has a hanging pin lead punch on a lower die, and cuts the leads of a semiconductor device placed on a pad of the lower die with the above hanging pin lead punch. Compared to the above method, cutting accuracy is improved, cutting time is not increased, and product yield is also improved.

(実施例) 以下、この発明の一実施例につき第1図を参照して説明
する。
(Example) An example of the present invention will be described below with reference to FIG.

なお、従来と変わらない部分については、図面に従来と
同じ符号をつけて示し説明を省略する。
It should be noted that parts that are the same as in the prior art are indicated by the same reference numerals as in the prior art in the drawings, and description thereof will be omitted.

第1図に示す一実施例のリード切断装置は、吊りピンリ
ードパンチ11が曲げダイ12によって支持され、かつ
、下型ホルダ13を介して下型ダイセット101に取着
されている。したがって上型には吊りピンリードパンチ
は設けられてない。そして、ICのリード201と吊り
ピンリード204はパッド14の上面肩部に載置される
。上型ホルダ103に取着された曲げパンチ15を含む
上型が所定位置まで下降し、第2図に示されるICの外
囲器203の側方に突出しているリード201と吊りピ
ンリード204に対し、曲げパンチ15が上記リード2
01を挟持固定するとともに吊りピンリードパンチ11
が曲げパンチ15の先端に衝接して吊りピンリード20
4を切断する。
In the lead cutting device of one embodiment shown in FIG. 1, a hanging pin lead punch 11 is supported by a bending die 12 and is attached to a lower die set 101 via a lower die holder 13. Therefore, the upper die is not provided with a hanging pin lead punch. Then, the IC lead 201 and the hanging pin lead 204 are placed on the upper shoulder portion of the pad 14. The upper mold including the bending punch 15 attached to the upper mold holder 103 is lowered to a predetermined position, and the lead 201 and the hanging pin lead 204 protruding to the side of the IC envelope 203 shown in FIG. , the bending punch 15 is connected to the lead 2
01 is clamped and fixed, and the hanging pin lead punch 11
collides with the tip of the bending punch 15 and the hanging pin lead 20
Cut 4.

叙上の如く、このリード切断装置によれば、特に動作、
工程、速度等について従来と全く変わることなく達成で
きる。
As mentioned above, according to this lead cutting device, the operation,
This can be achieved without changing the process, speed, etc. from conventional methods.

〔発明の効果〕〔Effect of the invention〕

この発明によれば、吊りピンリードパンチが下型に取着
されているため、樹脂モールド時に発生するリードフレ
ームの変形、反(そ)す、及び歪等に関係なく吊りピン
リードパンチが正確に吊りピンリードの切断部を狙うこ
とができる。これにより、製品に樹脂欠け、割れ、クラ
ック等の発生する問題を解決することができる。更に、
切断における品質及び形状と工程の歩留を顕著に向上さ
せ、後の工程のトラブルを防止できるなどの顕著な利点
がある。
According to this invention, since the hanging pin lead punch is attached to the lower mold, the hanging pin lead punch can be accurately punched regardless of deformation, warping, distortion, etc. of the lead frame that occurs during resin molding. You can aim at the cut part of the hanging pin lead. This makes it possible to solve problems such as resin chipping, cracking, and cracks in the product. Furthermore,
It has remarkable advantages such as significantly improving the quality and shape of cutting and the yield of the process, and preventing troubles in subsequent processes.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明にかかる一実施例の半導体装置のリード
切断装置の要部を示す断面図、第2図は未成形のICが
形成されたリードフレームの正面図、第3図はICの斜
視図、第4図は従来の半導体装置のリード切断装置の要
部を示す断面図である。 11・・・吊りピンリードパンチ 12・・・商げダイ 13・・・下型ホルダ 14・・・パッド 15・・・曲げパンチ 103・・・上型ダイホルダ 104・・・上型ダイセット 107・・・下型ダイセット 200・・・リードフレーム 201・・・ICのリード 204・・・ICの吊りピンリード 代理人 弁理士  井 上 −男 1.5二  曲+1”パンチ 第  1  芯 j  2 図 2D/a、20/6 ”)−F”)T’rI!+4゜第
  3  図
FIG. 1 is a sectional view showing the main parts of a lead cutting device for a semiconductor device according to an embodiment of the present invention, FIG. 2 is a front view of a lead frame on which an unformed IC is formed, and FIG. The perspective view and FIG. 4 are cross-sectional views showing essential parts of a conventional lead cutting device for a semiconductor device. 11... Hanging pin lead punch 12... Commercial die 13... Lower die holder 14... Pad 15... Bending punch 103... Upper die holder 104... Upper die set 107. ...Lower die set 200...Lead frame 201...IC lead 204...IC hanging pin Lead agent Patent attorney Inoue - Male 1.52 songs + 1" punch 1st lead j 2 Figure 2D /a, 20/6 ”)-F”)T'rI!+4゜Figure 3

Claims (1)

【特許請求の範囲】[Claims]  上型ダイセットに上型ホルダを介して取着されリード
フレームのリードに曲げ加工を施すための曲げパンチを
有する上型と、下型ダイセットに下型ホルダを介して取
着された曲げパッドの外方に、曲げダイにより固定され
、かつリードフレームの吊りピンリードを切断する吊り
ピンリードカットパンチを有する下型とを具備したこと
を特徴とする半導体装置のリード切断装置。
An upper die that is attached to the upper die set via the upper die holder and has a bending punch for bending the leads of the lead frame, and a bending pad that is attached to the lower die set via the lower die holder. A lead cutting apparatus for a semiconductor device, comprising: a lower mold having a hanging pin lead cut punch fixed to the outside of the lead frame by a bending die and for cutting a hanging pin lead of a lead frame.
JP6969388A 1988-03-25 1988-03-25 Lead cutting apparatus for semiconductor device Pending JPH01243565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6969388A JPH01243565A (en) 1988-03-25 1988-03-25 Lead cutting apparatus for semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6969388A JPH01243565A (en) 1988-03-25 1988-03-25 Lead cutting apparatus for semiconductor device

Publications (1)

Publication Number Publication Date
JPH01243565A true JPH01243565A (en) 1989-09-28

Family

ID=13410203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6969388A Pending JPH01243565A (en) 1988-03-25 1988-03-25 Lead cutting apparatus for semiconductor device

Country Status (1)

Country Link
JP (1) JPH01243565A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002027779A3 (en) * 2000-09-26 2002-07-11 Infineon Technologies Richmond Singulation of semiconductor packages by tie bar cutting
CN111054852A (en) * 2019-12-27 2020-04-24 成都迪锐创橙科技有限公司 Bending and forming machine for pins of multiple LED lamp beads

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002027779A3 (en) * 2000-09-26 2002-07-11 Infineon Technologies Richmond Singulation of semiconductor packages by tie bar cutting
CN111054852A (en) * 2019-12-27 2020-04-24 成都迪锐创橙科技有限公司 Bending and forming machine for pins of multiple LED lamp beads

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