Double-cylinder controllable three-roller holding core mechanism

Abstract

The invention belongs to the technical field of tools for seamless steel tube production lines, and particularly relates to a double-cylinder controllable three-roller holding core mechanism. The double-cylinder controllable three-roller holding core mechanism comprises a first cylinder and a second cylinder, wherein the output end of the second cylinder is connected with a holding roller connecting device; the output end of the first cylinder is connected with a holding core connecting device; the holding core connecting device comprises a first holding core, a second holding core and a thirdholding core, and further comprises connecting pieces of the first holding core, the second holding core and the third holding core; and the first holding core, the second holding core and the thirdholding core can hold a core rod under driving of the first cylinder. The double-cylinder controllable three-roller holding core mechanism has the beneficial effects that possibly minimum vibration ofa steel tube can be controlled, production efficiency is improved, smooth operation of the device is guaranteed, vibration abrasion of the device is reduced, and the service cycle of the device is prolonged.

Description

technical field [0001] The invention belongs to the technical field of tools for a seamless steel pipe production line, and in particular relates to a controllable double-oil-cylinder three-roller core-holding mechanism. Background technique [0002] At present, the background of the roll mill is basically in the form of a cylinder. The pipe in the rolling mill is rotated at high speed during the rolling process. In order to prevent it from being too large and affecting the normal rolling, it is basically restricted by the form of a guide cylinder. , so that the pipe can be rolled smoothly. After the rolling is completed, it is sent out through the upgraded roller table. Since the inner hole size of the guide cylinder of each specification is fixed, there must be a certain gap between the inner hole size of the guide cylinder and the outer diameter of the rolled steel pipe, otherwise, even if the steel pipe can be rolled smoothly, it cannot be rolled. its sent. If the gap...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned technical problems, and to provide a steel pipe that can control the vibration of the steel pipe to the minimum possible, so as to control the quality of the inner hole of the steel pipe, and the thin-walled pipe is not easy to be twisted, saving replacement Specifications, the precious time for replacing the guide cylinder improves the production efficiency, ensures the smooth operation of the equipment, reduces the vibration and wear of the equipment, and is beneficial to prolong the service life of the equipment. The double-cylinder controllable three-roller core-holding mechanism has the technical scheme as follows :

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