JPH0295237U

JPH0295237U -

Info

Publication number: JPH0295237U
Application number: JP342189U
Authority: JP
Priority date: 1989-01-13
Filing date: 1989-01-13
Publication date: 1990-07-30

Description

[Brief explanation of drawings]

第１図は本考案に係るフープ状リードフレーム
の送り機構の概略斜視図、第２図及び第３図は同
じく動作状態を追つて説明する概略正面図である
。第４図は従来のリードフレームの平面図、第５
図乃至第７図はリードフレームから半導体装置を
製造する工程を示す図で、第５図は分解斜視図、
第６図は平面図、第７図は縦断面図、第８図はマ
ガジンの概略斜視図、第９図はフープ状リードフ
レームの平面図、第１０図は課題を説明するため
のフープ状リードフレームの送り機構の概略正面
図、第１１図は同じく要部拡大正面図である。１７…フープ状リードフレーム、１９…ユニツ
ト、２１…ランド部、２２…リード、２３…タイ
バー、２６…第１のガイドローラ、２６ｂ…回転
軸、２７…第２のガイドローラ、２７ｂ…回転軸
、２８…第３のガイドローラ、２８ｂ…回転軸、
２８ａ…ピン、３２…昇降機構。 FIG. 1 is a schematic perspective view of a hoop-shaped lead frame feeding mechanism according to the present invention, and FIGS. 2 and 3 are schematic front views illustrating the operating state. Figure 4 is a plan view of a conventional lead frame, Figure 5
7 to 7 are diagrams showing the process of manufacturing a semiconductor device from a lead frame, and FIG. 5 is an exploded perspective view;
Fig. 6 is a plan view, Fig. 7 is a vertical sectional view, Fig. 8 is a schematic perspective view of the magazine, Fig. 9 is a plan view of the hoop-shaped lead frame, and Fig. 10 is a hoop-shaped lead for explaining the problem. FIG. 11 is a schematic front view of the frame feeding mechanism, and is also an enlarged front view of the main parts. 17... Hoop-shaped lead frame, 19... Unit, 21... Land portion, 22... Lead, 23... Tie bar, 26... First guide roller, 26b... Rotating shaft, 27... Second guide roller, 27b... Rotating shaft, 28...Third guide roller, 28b...Rotating shaft,
28a...pin, 32...lifting mechanism.

Claims

[Claims for Utility Model Registration] A hoop-shaped unit consisting of a large number of continuous band-like units that integrate a land portion and a plurality of leads, one end of which is disposed near the land portion and the other end of which is connected with a tie bar. A feeding mechanism for a hoop-shaped lead frame that runs the lead frame in the longitudinal direction, the first and second parts colliding with the back surface of the unit and changing the direction of travel of the hoop-shaped lead frame while maintaining flatness. between the second guide roller and the first and second guide rollers; Place the pins in parallel at the corner positions of the rectangle that will be one side,
A third guide roller wraps around the hoop-shaped lead frame while maintaining the flatness of the unit with a pair of adjacent pins, and the rotation axis position of the third guide roller is moved according to the movement state of the hoop-shaped lead frame. 1. A hoop-shaped lead frame feeding mechanism, comprising: a lifting mechanism for tensioning the lead frame;