Anode tin ball inclined rolling forming device and method

Abstract

The invention provides an anode tin ball inclined rolling forming device and method. A pure tin material is prepared into a straight rod material with the length of 2m-6m and the diameter which is 93%-97% of the diameter of a rolled thin ball. The method comprises the following steps: conveying the straight rod material into a two-rolled inclined rolling machine at a room-temperature state, and rolling the straight rod material into a tin ball under the action of an inclined rolled spiral hole pattern roller, wherein the diameter of the inclined rolling roller of the thin ball is 5-10 times as much as that of the rolled thin ball; the spiral hole pattern is composed of a circular-arc-shaped groove and a bead; the total length of the hole pattern in the peripheral direction is 900-1260 degrees; the circular arc of the circular-arc-shaped groove is equal to the radius of the rolled tin ball; the bead is linearly raised from bottom to top according to one or two folding lines; the two rollers are divided into high and low rollers according to the height of the finishing section of the bead; the inlet of a roller spiral pattern groove is a conversion assisting region; and the tin material takes industrial water as a cooling lubricant in an inclined rolling process. The anode tin ball inclined rolling forming device and method have the beneficial effects that an annular belt formed by forging is removed, a product has good appearance and high precision, no oil dirt is caused and the production efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of metal plastic forming, and in particular relates to an anode tin ball skew rolling forming device and method. Background technique [0002] With the promotion of lead-free electroplating, spherical tin in electroplating production has become more and more popular because of its advantages such as stable electroplating process, convenient filling, and not easy to hang. The traditional production process of solder balls is: cold extrusion-forging-polishing-cleaning. The product of this process has a ring with convex ribs on the diameter of the ball, which consumes a lot of materials and needs to be cleaned of oil stains. The process is complicated. [0003] As an important part of parts rolling technology, cross rolling is an efficient new process and new technology for metal plastic forming. Compared with the traditional forging and cutting process, cross rolling can greatly improve the production eff...

AI Technical Summary

Problems solved by technology

The traditional production process of solder balls is: cold extrusion-forging-polishing-cleaning. The product of this process has ring-shaped ribs on the diameter of the ball. The material consumption is large, and oil stains need to be cleaned, and the process is complicated.

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