Roll changing device of multi-roll mill

Abstract

The invention discloses a roll changing device of a multi-roll mill. The roll changing device comprises a travelling trolley, a fixture trolley and a roll frame which are both arranged on the travelling trolley, a lifting frame arranged on the fixture trolley, and a roller clamp arranged at one end of the lifting frame, wherein the travelling trolley is provided with a horizontal crosswise track allowing the fixture trolley to walk, the roll frame is fixedly arranged at one end part of the travelling trolley, the fixture trolley is provided with a horizontal lengthwise track allowing the lifting frame to move laterally, the roller clamp comprises a clamp seat arranged on the lifting frame, an upper clamp, a lower clamp and a clamp oil cylinder, the upper clamp, the lower clamp and the clamp oil cylinder are arranged on the clamp base, and the clamp oil cylinder is connected with the upper clamp through a swing arm. According to the roll changing device of the multi-roll mill, a roll is changed rapidly, accurately, safely and efficiently, the problems of high roll changing frequency and low effective operability troubling the multi-roll mill at present are solved, and the productivity of the mill is increased greatly.

Description

technical field [0001] The invention relates to a spreader, and more particularly, to a roll changing device for a multi-roll rolling mill. Background technique [0002] In the existing multi-roll mills, especially the 20-roll Sendzimir mill, the frequency of roll change is very high. On average, the work roll needs to be replaced twice for each coil rolled, and the work roll is replaced about 40 times a day on average. One intermediate roll is about once, and the unit must be shut down for each roll change, and the quality of the roll changing device has a very important impact on the roll change, and has a great impact on the production efficiency and production capacity of the unit. [0003] At present, in the world, most of the roll changing devices used in 20-roller Sendzimir mills are manual roll changing devices. The work rolls or intermediate rolls to be replaced are placed on the roll changing trolley, and the trolley is manually run to the roll changing position. ...

AI Technical Summary

Problems solved by technology

The manual roll changing trolley has a rising and falling roller conveying roller table. The left and right positions of the roller table are basically fixed, and only the height can be adjusted. Therefore, when the manual roll changing trolley is used to replace an intermediate roll, there is a large deviation in the position centering accuracy, which needs to be operated. Personnel manually shift an intermediate roller to the left or right, resulting in very cumbersome operation, extremely low precision of position control, and poor safety

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