CN2356848Y

CN2356848Y - Gapless variable axis supporting structure

Info

Publication number: CN2356848Y
Application number: CN 99200700
Authority: CN
Inventors: 杨庆峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-18
Filing date: 1999-01-18
Publication date: 2000-01-05
Anticipated expiration: 2009-01-18

Abstract

The utility model belongs to a mechanical support structure. The purposes of the utility model are to provide a gapless variable axis support structure, cause a slide support of an eccentric sleeve to be converted into rolling support, reduce friction resistance, cause parting and reunion to be more flexible, eliminate a radial gap, reduce the influence of the shock load of a roller and have good shock resistance, installation stabilization and positioning accuracy. For the purposes, support components between both ends of a machine frame and an axis are three-layer hollow roller bearings, the axis is positioned in an inner ring of the bearing, an outer ring is fixed on the machine frame, and a middle ring is provided with a mounting hole and a positioning hole. An adjustment plate and a driven plate can be adjusted and fixed on the machine frame, and the purpose of the utility model is realized.

Description

No gap flexible shaft line bearing structure

The utility model belongs to mechanical supporting structure.

The stationarity outbalance of machinery drum or axle running, especially to print field, the rollers running state, directly influence the quality of printing, usually when printing, require will to keep suitable squeegee pressure between the cylinder of offset press, and will leave between the cylinder when not printing, the adjustment of pressure and clutch are to be finished by the mobile of drum shaft supporting axis between the cylinder.For pressure regulation and clutch pressure, the roller bearings of roll-fed offset printing press all is contained in the eccentric bushing at present, and eccentric bushing will rotate in the wallboard hole, and eccentric bushing and wallboard hole are a pair of sliding friction pairs, according to the hydrodynamic bearing principle, in order to form the hydrodynamic oil film.Between eccentric bushing and the wallboard certain clearance must be arranged, because eccentric bushing does not often rotate, so be not easy to form the hydrodynamic oil film, even there is oil film also very thin, rigidity is low, under the effect of cylinder shock loading, increased the change in location of cylinder axis, made printing produce black thick stick, defectives such as ghost image.The gap is big more, and clutch is pressed can be flexible, impacts severely more, and it is little also to make the wallboard hole elongate the gap easily, though can reduce the displacement variable of cylinder axis, but make the clutch pressure dumb easily.Therefore, the supporting structure of current eccentric bushing, because the existence in gap, cylinder axis is not easy to fix, so rotating accuracy is affected, this problem is that the ubiquitous problem of offset press also is a difficult problem that presses for solution.

The purpose of this utility model provides a kind of no gap flexible shaft line bearing structure, make the sliding bearing of eccentric bushing become rolling bearing, the resistance of reducing friction, make clutch more flexible, eliminate radial clearance, reduce the influence of cylinder shock loading, have shock resistance preferably, stability and positioning accuracy are installed.

The utility model is made up of frame, axle, adjustment plate and follower plate, support unit between frame and axle two ends is three layers of hollow roller bearing, the axle be positioned at the ring of three layers of hollow roller bearing, three layers of hollow roller bearing outer shroud, be fixed on the frame, be equipped with installing hole and locating hole in three layers of hollow roller bearing, adjusting plate and follower plate is fixed as one by installing hole and middle ring, adjust plate and follower plate adjustable axle line position, and can be fixed on the frame.The said structure design has realized the purpose of this utility model.

The utility model has the advantages that, this supporting structure has been eliminated the radial clearance of idler fully, and shock resistance preferably arranged, reduced the influence of cylinder shock loading, make running steadily, the rotating accuracy height solves long-term because of holding together the black bar of press, defectives such as ghost image improve print quality greatly, and the life-span of supporting is greatly prolonged.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model schematic diagram

Fig. 2 is three layers of hollow roller bearing schematic diagram of the utility model

Fig. 3 is the utility model user mode schematic diagram

Fig. 4, Fig. 5 are the generalized section of Fig. 3

The utility model is by frame 1, axle 5, adjusting plate 9 and follower plate 8 forms, support unit between frame and axle two ends is three layers of hollow roller bearing 10, axle is positioned at the ring 7 of three layers of hollow roller bearing, the outer shroud 2 of three layers of hollow roller bearing is fixed on the frame, be equipped with installing hole 13 and locating hole 14 in three layers of hollow roller bearing, adjust plate and follower plate and be fixed as one by installing hole and middle ring.Adjusting plate and the adjustable solidating of follower plate fixes on the frame.Interior ring is eccentric with middle ring.Roller 3 between each ring set and 6 is a hollow roller.Installing hole and locating hole on the interior ring are through hole.

During concrete the making, the roller of making between three layers of hollow roller bearing 10, outer shroud and middle ring, middle ring and each axle sleeve of interior ring 3 and 6 is hollow cylindrical roller, is provided with the installing hole and the locating hole of perforation on middle ring.Interior ring is eccentric with middle ring.The two ends of the axle 5 that is connected with cylinder 12 are positioned at ring, the outer shroud 2 and the frame 1 of three layers of roller bearing are fixed as one, adjustment plate 9 is fixed on ring one side in the bearing by the installing hole 13 of three layers of roller bearing, middle ring opposite side is follower plate 8 fixedly, adjusts plate 9 and follower plate and fixes on the frame by the 11 adjustable solidatings of the adjustment fixing hole on it.

During use, unclamp and adjust the interior bolt of fixing hole, adjustment plate and follower plate and frame disengaging, rotation are adjusted to encircle in plate and the follower plate drive and are encircled in rotation and then the drive and an interior rotation, in order to the position of adjustment axle, finish the displacement of cylinder axis.Fixing adjustment plate and follower plate are on frame during printing, and interior ring then plays the effect of running bearing.

In a word, the utility model is simple in structure, and use cost is low, can utilize the cylinder load to increase suddenly, surpass the hollow roller live load, make hollow roller moderate finite deformation be arranged in order to alleviate the infringement of overload to cylinder, utilize hollow roller quantity many simultaneously, and double-decker improve the stiffness of bearing operation.Realize no gap, supporting with comparatively low cost, this supporting structure can be widely used in various mechanical supports field.

Claims

1, a kind of no gap flexible shaft line bearing structure, formed by frame, axle, adjustment plate and follower plate, it is characterized in that: the support unit between frame and axle two ends is three layers of hollow roller bearing, axle is positioned at the ring of three layers of hollow roller bearing, the outer shroud of three layers of hollow roller bearing is fixed on the frame, be equipped with installing hole and locating hole in three layers of hollow roller bearing, adjust plate and follower plate and be fixed as one, adjust plate and follower plate adjustable axle line position and also can be fixed on the frame by installing hole and middle ring.

2, no gap according to claim 1 flexible shaft line bearing structure is characterized in that: interior ring and middle ring are eccentric.

3, no gap according to claim 1 flexible shaft line bearing structure, it is characterized in that: the roller between each ring set is a hollow roller.

4, no gap according to claim 1 flexible shaft line bearing structure, it is characterized in that: installing hole on the interior ring and locating hole are through hole.