JPH0275740U - - Google Patents
Info
- Publication number
- JPH0275740U JPH0275740U JP15585588U JP15585588U JPH0275740U JP H0275740 U JPH0275740 U JP H0275740U JP 15585588 U JP15585588 U JP 15585588U JP 15585588 U JP15585588 U JP 15585588U JP H0275740 U JPH0275740 U JP H0275740U
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- resin
- lead
- tie bar
- island part
- 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
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 2
Landscapes
- Shearing Machines (AREA)
- Accessories And Tools For Shearing Machines (AREA)
- Lead Frames For Integrated Circuits (AREA)
Description
第１図は本考案の一実施例にかかるリード切断
装置と樹脂モールド被覆された半導体装置の一部
破断斜視図、第２図及び第３図はそれぞれ第１図
―線に沿つた切断状態を示す断面図であり、
第２図は吊ピンが切り込まれた状態を示し、第３
図は吊ピンが切断され、タイバーに切り込まれた
状態を示し、第４図は従来のリード切断装置と樹
脂モールド被覆された半導体装置の一部破断斜視
図、第５図は第４図のＪ―Ｊ線に沿つた要部を断
面で示す上面図、第６図は従来の他のリード切断
装置のパンチを示す側面図である。
３…アイランド部、４…リード、４１…一端、
５…タイバー、６…吊ピン、７…リードフレーム
、１０…樹脂、１５…パンチ、１５ａ…前端切断
部、１５ｂ…後側切断部。
FIG. 1 is a partially cutaway perspective view of a lead cutting device and a resin mold-covered semiconductor device according to an embodiment of the present invention, and FIGS. 2 and 3 show the state of cutting along the line in FIG. 1, respectively. It is a sectional view showing
Figure 2 shows the hanging pin cut in, and the third
The figure shows the hanging pin cut and cut into the tie bar, Figure 4 is a partially cutaway perspective view of a conventional lead cutting device and a semiconductor device coated with resin mold, and Figure 5 is the same as in Figure 4. FIG. 6 is a top view showing a cross section of the main part along line JJ, and FIG. 6 is a side view showing a punch of another conventional lead cutting device. 3...Island part, 4...Lead, 41...One end,
5... Tie bar, 6... Hanging pin, 7... Lead frame, 10... Resin, 15... Punch, 15a... Front end cut portion, 15b... Rear side cut portion.
Claims (1)
ードの中間部をタイバーにて連結しかつアイラン
ド部とタイバーとをリードと隣接して延びる吊ピ
ンにて連結したリードフレームのアイランド部及
び各リード一端部を含む主要部分を樹脂にてモー
ルド被覆した樹脂成形品の樹脂外に導出した吊ピ
ン及びタイバーをパンチにて切断した各リードを
独立させるリード切断装置において、 上記パンチの下端面が、吊ピンの樹脂と隣接す
る部分を切断する前端切断部と、タロバーの樹脂
から離れた面側から切断する後側切断部を有した
逆Ｖ字型を呈し、上記前端切断部によつて吊ピン
に切り残しがある状態で後側切断部がタイバー後
側を切断し始める位置関係にあることを特徴とす
るリード切断装置。[Claims for Utility Model Registration] A lead frame in which the middle parts of a plurality of leads, one end of which is arranged close to the island part, are connected by a tie bar, and the island part and the tie bar are connected by a hanging pin that extends adjacent to the leads. The main parts of the resin molded product, including the island part and one end of each lead, are molded and coated with resin, and the hanging pins and tie bars led out of the resin are cut with a punch.In the lead cutting device that makes each lead independent, the above-mentioned punch The lower end surface of the suspension pin has an inverted V-shape having a front end cutting section for cutting a portion adjacent to the resin of the hanging pin, and a rear cutting section for cutting from the side of the Talobar that is away from the resin, and the front end cutting section is The lead cutting device is characterized in that the rear cutting section is positioned to begin cutting the rear side of the tie bar when there is an uncut portion on the hanging pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15585588U JPH0275740U (en) | 1988-11-29 | 1988-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15585588U JPH0275740U (en) | 1988-11-29 | 1988-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0275740U true JPH0275740U (en) | 1990-06-11 |
Family
ID=31433857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15585588U Pending JPH0275740U (en) | 1988-11-29 | 1988-11-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0275740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009072863A (en) * | 2007-09-20 | 2009-04-09 | Jfe Steel Kk | Down-cut type crop shear and upper blade material |
-
1988
- 1988-11-29 JP JP15585588U patent/JPH0275740U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009072863A (en) * | 2007-09-20 | 2009-04-09 | Jfe Steel Kk | Down-cut type crop shear and upper blade material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USD296775S (en) | Vehicle aerodynamic fairing | |
| JPH0275740U (en) | ||
| JPH0298650U (en) | ||
| USD318448S (en) | Rear spoiler for a motorcycle | |
| JPH0275741U (en) | ||
| USD308728S (en) | Sawhorse | |
| USD288347S (en) | Fishing lure | |
| USD282838S (en) | Slip-on heat sink for encased electrical packages | |
| USD378449S (en) | Head restraint for small livestock | |
| JPH0470102U (en) | ||
| JPH0317640U (en) | ||
| JPH0356161U (en) | ||
| JPS62144396U (en) | ||
| JPS62142878U (en) | ||
| JPS619299U (en) | Punch for diver cutting type | |
| JPH0429399U (en) | ||
| JPH0185010U (en) | ||
| JPH04137065U (en) | Die structure of narrow lead semiconductor tie bar cutting mold | |
| JPS63170962U (en) | ||
| JPS6253123U (en) | ||
| JPH01157448U (en) | ||
| JPH0463659U (en) | ||
| JPH0396200U (en) | ||
| JPH03116050U (en) | ||
| JPH0279052U (en) |