Combined bearing for offset press

A combined bearing and offset printing machine technology, applied in the field of bearings, can solve the problems of inability to realize roller clutch and pressurization, complicate offset printing machine structure, and decline in printing quality, and achieve solid and clear full-page dots, uniform ink color and no ink bars, The effect of continuous adjustment

Inactive Publication Date: 2006-09-13
潍坊东航印刷科技股份有限公司
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AI-Extracted 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 offse...
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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.

Application Domain

Rolling contact bearingsRotary presses

Technology Topic

ClutchWindage +4

Image

  • Combined bearing for offset press
  • Combined bearing for offset press

Examples

  • Experimental program(1)

Example Embodiment

[0009] Such as figure 1 , figure 2 As shown, the combined bearing for an offset printing machine includes a double outer ring double row radial tapered roller bearing. The inner space of the inner ring of the double outer ring double row radial tapered roller bearing is provided with a double inner ring double row. Tapered roller bearing, the outer ring of the double inner ring double row radial tapered roller bearing and the inner ring of the double outer ring double row radial tapered roller bearing are an integral structure, and the double inner ring double The rotation center of the radial tapered roller bearing is eccentric to the rotation center of the double outer ring double row radial tapered roller bearing.
[0010] The eccentricity is located between the inner circular surface of the outer ring of the double inner ring double row radial tapered roller bearing and the outer circular surface of the inner ring of the double outer ring double row radial tapered roller bearing.
[0011] Regarding the technical content of double outer ring double row radial tapered roller bearings and double inner ring double row radial tapered roller bearings, it is published in the "Machinery Design Manual" (Fourth Edition) published by Chemical Industry Press in January 2002. There are detailed diagrams on pages 7-189 of Volume Two, and the technology is well known to those skilled in the art and will not be repeated here.
[0012] In this embodiment, the outer ring of the double inner ring double row radial tapered roller bearing and the inner ring of the double outer ring double row radial tapered roller bearing are an integral structure. For ease of description, as attached figure 1 As shown, we call it Middle Circle 2.
[0013] Specifically, the present invention includes a middle ring 2, the outer surface of the middle ring 2 has two sets of tapered rollers 4 raceways of the outer ring bearing, corresponding to the outer ring 1 of the two tapered roller bearings, the A cage 41 is provided between several tapered rollers 4 in each ring, an outer ring bearing spacer 6 is provided between the outer rings 1 of two tapered roller bearings, and an oil hole 61 for lubrication is provided on the outer ring bearing spacer 6 , The width of the outer ring bearing spacer ring 6 determines the gap of the outer ring bearing, which can be equipped with grinding processing as required during installation to meet the printing requirements of the offset press.
[0014] The inner surface of the middle ring 2 has the raceways of the two sets of tapered rollers 5 of the inner ring bearing. Corresponding to this are the inner rings 3 of the two tapered roller bearings. In the cage 51, the inner ring bearing spacer ring 7 is arranged between the inner rings 3 of the two tapered roller bearings, and the inner ring bearing spacer ring 7 is also provided with lubricating oil holes 71, the same width of the inner ring bearing spacer ring 7 The clearance of the inner ring bearing is determined, and it also needs to be matched with grinding during installation.
[0015] Another outstanding feature of the present invention is that the raceway on the inner surface of the middle ring 2 and the raceway on the outer surface of the middle ring 2 are not concentric, and there is a certain eccentricity e between the two. In this embodiment, The eccentricity e is 2-6mm; and the side wall of the middle ring 2 is provided with a lubricating oil hole 21 leading to the inner ring bearing. .
[0016] The clutch and pressurization of the roller can be achieved by rotating the middle ring: the connecting rod (not shown in the figure) fixed on the middle ring is rotated, and its rotation drives the bearing middle ring 2 to rotate to a certain angle through the bolt. Since the inner raceway of the bearing is eccentric relative to the outer raceway, the center of the inner raceway, that is, the center line of the roller, is also eccentric and moved. This changes the center distance between the rollers and realizes the cooperation with the rollers. Pressure or pressure relief and clutch of the embossing roller.
[0017] The invention can realize the adjustment of the center distance of the cylinder and the axial adjustment, significantly reduces the deformation of the bearing and the wallboard, and can greatly improve the printing quality and service life of the offset printing machine.
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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