Automatic tabulating device for punching and forming lead frame with material tube expansion mechanism

Abstract

The invention discloses an automatic tabulating device for punching and forming a lead frame with a material tube expansion mechanism. A material tube expansion mechanism is arranged on an automatic tabulating device for punching and forming a lead frame. The material tube expansion mechanism comprises an open type holding cavity [7] matched with a material tube in size as well as an expansion plate [5] and a push rod [6] arranged in the holding cavity [7]. The holding cavity [7] is arranged at the end parts of a guide rail [4] and an cover plate [3] of the automatic tabulating device; an empty cavity connected with the holding cavity [7] is arranged on the guide rail [4]; the push rod [6] is arranged in the empty cavity; the upper end of the push rod [6] is arranged in the holding cavity [7]; and the expansion plate [5] is conically fixed in the bottom part of the holding cavity [7]. The automatic tabulating device for punching and forming the lead frame with the material tube expansion mechanism realizes automatization; products can be smoothly fed into tubes; the device stability is greatly improved; no damages are caused to the lead pins of the products; and the product quality is stable. Moreover, the automatic tabulating device for punching and forming the lead frame with the material tube expansion mechanism is convenient to operate and maintain and has low working intensity.

Description

Technical field [0001] The invention relates to a lead frame punching and forming automatic tube mounting device, in particular to a material tube expansion mechanism of the lead frame punching and forming automatic tube mounting device. Background technique [0002] At present, in the automatic punching and forming equipment in the subsequent process of the integrated circuit IC manufacturing industry, some plastic-encapsulated lead frames must be automatically assembled after punching and forming, such as figure 1 , figure 2 As shown, the requirements for equipment stability are getting higher and higher. The material tube is generally made of PVC plastic material, which is continuously extruded and drawn by a mold, and then divided and cut into a certain length of material tube 1. Some material pipes are dented and deformed at the mouth of the material pipe, such as image 3 As shown, H becomes larger and B becomes smaller, so that the plastic-encapsulated product 2 is blocke...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low production capacity and high labor intensity due to the deformation of the material tube when the lead frame punching and forming automatic tube loading device is loaded.

[0005] With the above technical scheme, the material tube is directly inserted into the cavity when loading the material, and the expansion piece in the cavity will expand the entrance of the real tube. After loading the material, the push rod pushes the material tube out of the cavity, thereby solving the problem of Problems caused by deformation of the material tube

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