Rolling mill for three-layer compounded micro-profiled electric contact strip

Abstract

The invention discloses a rolling mill for a three-layer compounded micro-profiled electric contact strip. The rolling mill comprises a paying-off part, a paying-off tension part, cleaning troughs, a compounding part, a cooling trough, a universal rolling part, a taking-up tension part and a taking-up part, wherein the paying-off part, the paying-off tension part, the cleaning troughs, the compounding part, the cooling trough, the universal rolling part, the taking-up tension part and the taking-up part are sequentially arranged. The paying-off part comprises a plurality of paying-off frames, the paying-off tension part comprises a plurality of tension control mechanisms, and the compounding part comprises a compounding body and a bidirectional rolling mechanism, wherein a plurality of wire inlet rails are arranged on the side, located at the cleaning troughs, of the compounding body, a wire guiding nozzle is arranged on the other side of the compounding body, and the bidirectional rolling mechanism is arranged on a wire outlet part of the wire guiding nozzle. The universal rolling part comprises a pair of horizontal rollers and a pair of vertical rollers, and the number of the paying-off frames is smaller than that of the tension control mechanisms. The compounded strip rolled by the rolling mill is good in surface quality and high in bonding strength, the strip is compounded laterally in three layers, the process is continuous and compact, and adjustment is easy and convenient.

Description

technical field [0001] The invention relates to the field of rolling mill equipment, in particular to a rolling mill for three-layer composite micro-shaped electrical contact strips. Background technique [0002] At present, the composite micro-shaped electrical contact strips rolled by traditional rolling mills are mostly upper and lower two-layer or three-layer composite strips, which are generally solid-phase rolling composites. According to the rolling temperature, they can be divided into hot-rolled, Cold rolling and warm rolling, the thinnest strip is less than 0.5mm; the three-layer upper and lower composite strips are generally rolled and compounded by two layers of strips, and then rolled and compounded with the third layer of strips, and the three-layer special-shaped contacts The typical shape of the strip is as figure 1 As shown, an electrical contact layer 71 , an intermediate layer 72 and a base layer 73 are sequentially included from top to bottom. Most of t...

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Problems solved by technology

[0003] The above-mentioned rolling mill has the limitation of rolling two-layer or three-layer special-shaped contact strips: only one-sided solder joint materials can be produced. Now, with the multi-functionalization and miniaturization of relays, electronic materials need double-sided s

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