Combined bearing for offset press

Abstract

The invention discloses a combination bearing for an offset press, comprising a double-outer ring double-column center cone roller bearing, where there is a double-inner ring double-column center cone roller bearing arranged in a space inside inner ring of the former roller bearing, rotation centers of the two roller bearings are displaced, and the preloads applied onto the two roller bearings to eliminate radial windage of bearings are opposite and offset each other and therefore can not be transferred to wall panels so as to be able to realize high-rigidity, high-speed and high-accuracy rotation and improve printing quality, and it can realize clutch operation and pressurization between rollers by rotation of the inner ring of the double-outer ring double-column center cone roller bearing, simple in structure and reliable to operate and able to be continuously adjusted.

Description

technical field [0001] The invention relates to a bearing, in particular to a bearing for an offset printing machine. Background technique [0002] The cylinder group of the offset printing machine is installed on the wallboard of the offset printing machine through bearings and bearing sleeves. The gap in the drum support is one of the reasons for the uncertainty of the spatial position of the rotation center of the drum when the drum is rotating, and causes shaking. As a result, ink streaks, ghosting, and unclearness will occur on the printed matter, which seriously affects the quality of the printed matter. The clearance in the roller support includes the clearance in the bearing and the clearance between the bearing housing and the hole in the wall plate. For the clearance in the bearing, it is possible to eliminate the radial clearance of the bearing by selecting an appropriate bearing, such as a radial thrust ball bearing, a tapered roller bearing, etc., and applying...

AI Technical Summary

Problems solved by technology

For the clearance in the bearing, it is possible to eliminate the radial clearance of the bearing by selecting an appropriate bearing, such as a radial thrust ball bearing, a tapered roller bearing, etc., and applying an axial preload; The preload of push ball bearings and tapered roller bearings will be transmitted to the wallboard of the offset printing machine, and will cause deformation of the wallboard, which will also affect the decline in printing quality

And the clutch and pressurization between the cylinders cannot be realized by using ordinary bearings, and the structure of the offset printing machine is complicated to realize the clutch and pressurization between the cylinders

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