A method for changing the back-up rolls of a fourteen-high cold rolling mill for copper strips

Abstract

The invention discloses a roller replacing method for supporting rollers of a fourteen-roller copper belt cold-rolling mill. A roller replacing sequence is reasonably arranged according to a specific structure of the fourteen-roller copper belt cold-rolling mill. A roller replacing tool with higher practicability is used. Furthermore, a shaft holding device is arranged at the shaft head of a universal connecting shaft to fix the shaft head before the connection between the supporting roller and the universal connecting shaft is broken, and then an arc plate for fixing a granny knot is arranged above a platform and under the granny knot. Thus, the shaft head and the granny knot always remain at the original positions in a roller replacing process after the connection is broken, the transmitting end of the lower supporting roller and the transmitting end of the upper supporting roller can be successfully inserted into the shaft head in one time when rollers are assembled again, and the roller replacing efficiency is improved. In addition, the other rollers are prevented from being affected, the time for replacing the rollers is reduced, and the labor intensity of workers is reduced; and the continuous stable operation of the fourteen-roller cold-rolling mill is guaranteed, and the normal production of copper belts is guaranteed.

Description

technical field [0001] The invention relates to the technical field of copper material processing equipment, in particular to a method for changing backup rolls of a fourteen-high cold rolling mill for copper strips. Background technique [0002] The fourteen-high cold rolling mill for copper strips is a new multi-roll rolling mill that has emerged in recent years. Its rolls are arranged in a 1-2-3-1 type, that is, the first layer is 1 work roll, and the second layer is 2. The inner intermediate roll, the third layer is composed of an outer intermediate roll and two edge backing bearing rolls, and the fourth layer is a powerful large support roll. The fourteen-high rolling mill not only has the advantages of simple structure, easy manufacture, large opening (50mm), good heat dissipation, and convenient operation of the four-high rolling mill, but also has a series of advantages and performances of the twenty-high rolling mill, such as the small diameter of the work rolls, T...

AI Technical Summary

Problems solved by technology

[0004] At present, the fourteen-high cold-rolling mill’s back-up roll changing method is time-consuming and labor-intensive, the labor intensity is relatively high, the roll-changing efficiency is low, and the time required for the roll-changing operation is long, which seriously affects the continuous operation of the fourteen-high cold-rolling mill. Stable production, which in turn affects the normal production of copper strips

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