Cold rolling mill

Abstract

The invention relates to steel pipe machining equipment and specifically relates to a cold rolling mill. The cold rolling mill comprises a frame, rollers, bearing blocks, and bearings arranged between the rollers and the bearing blocks; the rollers include an upper roller and a lower roller; the bearing blocks include an upper bearing block and a lower bearing block; wherein, a straight groove is formed in the frame; the lower bearing is fixed on the bottom of the straight groove, and the upper bearing block is connected with the frame through a position adjusting mechanism and has a function of sliding in the straight groove; the upper roller and the lower roller are connected with the frame through the upper bearing block and the lower bearing block, respectively; due to sliding of the upper bearing block, a function of adjusting an axle distance between the upper roller and the lower roller can be realized; an oil filling port is arranged on each bearing block, and one end of the oil filling port is connected with an oil filling pipeline for bearing oiling, and further, one end of the oil filling pipeline is connected with an oil filling distributor.

Description

technical field [0001] The invention relates to steel pipe processing equipment, in particular to a cold rolling mill. Background technique [0002] Steel pipe cold rolling is a production process that uses extrusion to process steel pipe billets into steel pipes. Usually, steel pipe cold rolling mills are used for cold rolling. There are two sets of bearings in the mold assembly of traditional seamless steel pipe cold rolling mills. After a period of time, the mold needs to be disassembled to refuel the bearing to prevent the bearing from being damaged and stuck, resulting in a long time for mold change and debugging, and a low equipment start-up rate. The way of directly opening the hole for oiling is because the bearing is often in an unfixed position with the different positions of the roll, so that the oiling hole cannot accurately fill the lubricating oil on the bearing, thereby causing leakage and waste of the lubricating oil. For example, a kind of cold rolling mill...

AI Technical Summary

Problems solved by technology

[0002] Steel pipe cold rolling is a production process that uses extrusion to process steel pipe billets into steel pipes. Usually, steel pipe cold rolling mills are used for cold rolling. There are two sets of bearings in the mold assembly of traditional seamless steel pipe cold rolling mills. After a period of time, the mold needs to be disassembled to refuel the bearing to prevent bearing damage and jamming, resulting in a long time for mold change and debugging, and a low equipment start-up rate

The way of directly opening the hole for oiling is because the bearing is often in an unstable position with the different positions of the roll, so that the oiling hole cannot accurately fill the lubricating oil into the bearing, resulting in leakage and waste of lubricating oil

For example, a kind of cold rolling mill disclosed by CN203900102U is provided with a lubricating brush on the roll, which improves the service life of the roll, but it does not solve the oiling problem of the bearing, and still needs to disassemble the mold to oil the bearing, so that the operating rate of the equipment Low, low production efficiency

Another example, CN102748574B discloses an online refueling device for cardan shaft bearings, which connects the grease nipple to the bearing through a through hole to realize online refueling. However, it cannot refuel when the bearing displacement changes with the roll position

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