CN2505638Y - Hollow and solid roller bearing with double-layer roller path - Google Patents
Hollow and solid roller bearing with double-layer roller path Download PDFInfo
- Publication number
- CN2505638Y CN2505638Y CN 01267565 CN01267565U CN2505638Y CN 2505638 Y CN2505638 Y CN 2505638Y CN 01267565 CN01267565 CN 01267565 CN 01267565 U CN01267565 U CN 01267565U CN 2505638 Y CN2505638 Y CN 2505638Y
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- roller
- bearing
- hollow
- double
- inner ring
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Abstract
The utility model relates to a hollow and solid roller bearing with double-layer roller path, comprising an inner ring, rolling bodies, a middle ring, an outer ring and a cage, which is characterized in that: the rolling bodies between the inner ring and the outer ring are solid cylindrical rollers, while the rolling bodies between the inner ring and the middle ring are full filled hollow cylindrical rollers. The utility model has the advantages that: the disadvantage that the hollow cylindrical rollers are easy to fracture is avoided; the bearing life is long; the inconvenient maintenance existing in the prior art and other disadvantages are solved, meanwhile, the supporting precision is high; the printing quality and speed are improved.
Description
Technical field
The utility model relates to a kind of bearing, is particularly useful for the hollow and solid cylinder roller bearing of double-deck raceway that the printing machinery roller is used.
Background technique
The running accuracy of saying roller is in a sense determining printing quality, what is the running accuracy of roller? its actual spin axis (instantaneou axis of rotation line) is referred to as the running accuracy of roller around the scope that desirable spin axis marks in the space when being the roller rotation.The factor that influences the roller running accuracy is a lot, the gap that wherein maximum is during roller supports, and the instantaneou axis of rotation line of roller does around desirable spin axis that heavy curtain is moving to move when having the gap in supporting.
Roller supports the play that the gap comprises that bearing is interior, the gap in the matching gap of bearing and bearing housing (or eccentric bushing) and printing press wall board hole etc.Owing to have the gap in supporting, roller its centre distance drift of whenever turning around, drift value is called the roller centre distance value of allowing, general China offset press roller centre distance value of allowing is the 0.1-0.2 millimeter, the roller centre distance value of allowing is to produce the printing ink thick stick, ghost image, printing net-point distortion, unintelligible and reason that pressure is unreal.Therefore reduce roller and support the effective way that the gap is raising roller running accuracy and printing quality, China's offset press roller centre distance value of allowing is bigger with advanced international standard 0.02-0.03 millimeter gap at present, therefore this problem is analyzed and researched, and take measures to reduce to support the gap so that eliminate roller, catching up with and surpass the world standards is printing press worker and the common task of bearing work author.
General roller supports the gap and consists of the following components:
1, bearing clearance: bearing clearance is that general bearing proper functioning is necessary.For sliding bearing, forming the hydrodynamic oil film needs certain interval, generally is not less than the 0.015-0.03 millimeter; And for the general play of traditional rolling bearing at the 0.01-0.1 millimeter.In order to reduce the rolling bearing play, various countries offset press factory all with the special little play precise rolling bearing of Bearing Factory's cooperation manufacturing, for example the Hai Debao printing press uses accurate needle bearing, reach the micron order play by apolegamy, more producers adopt radial-thrust bearing, as angular contact bearing and tapered roller bearing, eliminate bearing clearance by axial preload.
2, bearing cooperates
Rolling bearing inner ring cooperates with the roller axle generally to be got n to M and cooperates, and wherein cooperates following person all can produce the gap at JS, and housing washer cooperates with roller eccentric bushing or wallboard hole generally gets H, equally also gapped.
When adopting the separable type bearing, and Internal and external cycle can be eliminated bearing fully when adopting interference fit and cooperates the gap that produces.
3, between the eccentric bushing and the gap between volume heart cover and the wallboard hole.
Printing needs the roller pressurization from entirely, regulates roller centre distance and forme drum and moves axially contraposition, therefore between inside and outside eccentric bushing, all must leave movement clearance between eccentric bushing and the wallboard hole.
A. gap between the inside and outside eccentric bushing
When the rubber roller should pressurize clutch when adjusting centre distance with impression roller according to the paper thickness again, adopts two eccentric bushings, when eccentric bushing turned an angle in the eccentric overcoat endoporus that matches, the interior round belt action roller neck of eccentric bushing had moved clutch action.The eccentric bushing cylindrical then makes the roller center of circle in the eccentric bushing also produce when turning an angle in the wallboard hole of matching mobile, adjusts rubber roller and impression roller centre distance thereby reach.In order to rotate in that the gap more than 0.03 millimeter is arranged between the eccentric bushing inside and outside circle also is necessary.
B. gap between eccentric bushing and the wallboard hole
Some rubber roller is only adjusted clutch, adjusts the centre distance with the rubber roller on the forme drum, has only one deck eccentric bushing, and between eccentric bushing and wallboard hole the gap more than 0.03 millimeter to be arranged be necessary in order to rotate.
C. in printed on both sides and multicolor printing, forme drum need move axially to adjust and carry out contraposition.When roller supports when adopting radially thrust ball bearing or tapered roller bearing, the adjustment of roller axial position can not solve by the bearing enclose relative displacement, can only roller rest tube shaft bearing and bearing housing move axially with respect to the wallboard hole together.Must there be the 0.03-0.04 mm clearance between eccentric bushing and the wallboard hole.
D. machine-building always has difference, and the part manufacturing all allows certain tolerance range, even we wish that minimum clearance is zero, adopts 5 quite accurate class precisions, makes eccentric bushing and wallboard hole, and its maximal clearance that matches also can be in 0.02 millimeter.
At present some printing machinery has adopted three-point support structure (seeing accompanying drawing 1) when using hollow cylindrical roller bearing, and the Bearing Steel steel bushing 12 that hardens is housed on rubber roller 11, the eccentric bushing cylindrical, is supported by three rollers again.A, B roller are eccentric roller, A roller can regulate impression and rubber roller centre distance, and B roller can regulate rubber roller and forme drum centre distance, the C roller is supported on the dish-shaped pressure spring 15, to adjust the pressure of roller C.
Rotate in the hole of eccentric overcoat with the cylindrical that overlaps in the pre-eccentric, after the employing supported at three point, eccentric interior cover cylindrical rotates in three rollers.After adopting supported at three point and hollow cylindrical roller bearing, rubber roller 11 has been eliminated original two-layer matching gap and one deck bearing clearance.Forme drum 14 and impression roller 13 all adopt hollow roller bearing, and do not adopt eccentric bushing, eliminate main gap in the above-mentioned analysis with this, support so as to realizing gapless roller.
Adopt the effect of this hollow roller bearing and three-point support structure:
1, version roller, rubber roller and impression roller adopt hollow cylindrical roller bearing, the rubber roller adopts three-point support structure, three rollers support and all do not have the gap theoretically, the roller centre distance value of allowing is the 0-0.01 millimeter, roller centre distance values of allowing such as " 03 " " 08 " machine of past printing house are about 0.08-0.13, the rowland offset press is 0.03 millimeter, the Hai Debao offset press is 0.02 millimeter, and centre of the drum's distance value of allowing is greatly reduced on original basis.
2, adopt supported at three point to oversimplify on making, rubber roller wallboard hole is a free size, also saves unmanageable outer eccentric bushing.
3, insurmountable for many years pressure governor precision problem is resolved after adopting supported at three point, not only regulates reliably, accurately, transfers how much what are arranged, and can transfer the gap on both sides simultaneously an adjusting, has simplified operation.
4, when printing full version be convinced on the spot, inkless thick stick, the printing worker is reflected full version printing that this machine prints off on the spot once, other offset press printings just can reach identical result twice.Make the offset press level improve a class.
Though the said structure bearing in use has the certain structure advantage, because the stress that the hollow cylindrical roller of internal layer bearing bears is bigger, and shows as alternating stress in running up, rolling element is prone to fracture sometimes, and inconvenient maintenance.
Summary of the invention
Therefore, the purpose of this utility model be to provide a kind of double-deck raceway hollow with the solid cylinder roller bearing, be prone to shortcomings such as fracture, life-span weak point, maintenance difficult to overcome the rolling element that prior art exists.
It is to realize like this that this reality has novel purpose, hollow and the solid cylinder roller bearing of a kind of double-deck raceway, comprise inner ring, rolling element, centre circle, outer ring, retainer, it is characterized in that: the rolling element between inner ring and centre circle is the solid cylinder roller, and the rolling element between outer ring and centre circle then is the full hollow cylindrical roller of adorning.
This reality has novel purpose can also adopt following technological means further to realize.
Hollow and the solid cylinder roller bearing of aforesaid double-deck raceway, centre circle is the eccentric circle body of a band, and which is provided with the aperture that does not wait in 4-6 aperture, and hollow cylindrical roller is single-row or biserial, be provided with little axle in one of centre circle aperture, its diameter and aperture driving fit, inner ring have 1: 12 tapering.
Advantage of the present utility model:
1, realized accurate support of little play of printing roller, made the roller centre distance value of allowing reach the 0.005-0.01 millimeter, roller is directly put and is reached the 0.005-0.01 millimeter.
2, improve printing quality, solved the black thick stick problem that can't overcome for a long time.
3, having improved the roller smoothness of operation, improved print speed printing speed, web press is reached 45000 to be changeed/hour, and removed shoulder iron.
4, compare with three circle bearings, the rotating accuracy of the hollow and solid cylinder roller bearing of double-deck raceway, vibration absorption ability, accuracy life and overload protection aspect all are better than the former.
5, aspect the clutch pressure, owing to change sliding friction into rolling friction, greatly reduce driving moment, improved the life-span of bearing.
6, the valuable wallboard of protection, printing press wall board hole and eccentric bushing slip abrasion make the wallboard hole become big, and it is circular to become awl, is the problem that the people is had a headache always, for example certain factory's roll-fed offset printing press use after 3 years, wall version hole ellipse to 0.13 millimeter.This not only reduces printing quality greatly, and for the unable maintenance in printing house.Adopt double-deck raceway hollow with the solid cylinder roller solved this problem.
7, internal layer adopts the solid cylinder roller, and the roller fracture of having avoided original employing hollow cylindrical roller to occur is regulated elimination rolling play by the internal diameter tapering.
Description of drawings
Fig. 1 is the supported at three point roller bearing structural representation of prior art.
Fig. 2 is one of the utility model embodiment's a structural drawing.
Fig. 3 is that the A of Fig. 2 is to view.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
See also Fig. 2,3, in order to eliminate the gap that roller supports, overcome the shortcoming of the internal layer hollow cylindrical roller easy-rupturing of prior art existence, the internal layer of the utility model bearing has adopted the solid cylinder roller, the hollow bearing with solid cylinder roller belts axial preload of this double-deck raceway, its structure is: be made up of inner ring 1, solid cylinder roller 2, eccentric centre circle 3 and the outer ring 4 of 1: 12 tapering of internal diameter band, hollow cylindrical roller 5, retainer 6 etc.Raceway 3-1 forms the internal layer bearing race in inner ring raceway 1-3 and the eccentric centre circle, and filled circles pillar 2 and retainer 6 assemble therebetween, and present embodiment solid cylinder roller is a biserial.Internal layer bearing race center is 1-6, outer raceway 3-3 of eccentric centre circle and outer ring raceway 4-2 form outer bearing race, hollow cylindrical roller 5, the full dress therebetween, it can be single-row or biserial, and outer bearing race center is 4-5, this two centre distance is throw of eccentric E, eccentric centre circle has 4-8 different apertures, is used to connect the two ends part, as bearing and lid and rotation ear etc.By being loaded on the little axle 8 in the through hole 7, promote the 8 throw of eccentric E that adjust internal and external layer bearing race center, the rubber roller is pressurizeed clutch and adjust centre distance with impression roller according to the paper thickness.
Roller bearing of the present utility model supports the roller rotation with adjustment of roller centre distance or pressure regulation clutch support and combines, provide a kind of offset printing roller to support the novel bearing unit, the kinematic pair that its tape spool is formed to the internal layer raceway and the solid roller of preload supports as the rotation of the precision of roller, little play, the kinematic pair that its outer raceway and hollow roller are formed has replaced being slidingly matched of eccentric bushing, has realized the pressurization clutch or the adjustment of roller center of roller.This in addition double-deck raceway structure allows bearing inner race and centre circle that displacement is to axial arranged in the running, therefore is that condition has been created in version axial contraposition adjustment of roller and the axial thermal stretching of roller.
Claims (5)
1, the hollow and solid cylinder roller bearing of a kind of double-deck raceway, comprise inner ring rolling element, centre circle, outer ring, retainer, it is characterized in that: the rolling element between inner ring and centre circle is the solid cylinder roller, and the rolling element between outer ring and centre circle then is the full hollow cylindrical roller of adorning.
2, the bearing of stating as claimed in claim 1 is characterized in that: centre circle is the eccentric circle body of a band, and which is provided with the aperture that does not wait in 4-6 aperture.
3, the bearing of stating as claimed in claim 1 is characterized in that: hollow cylindrical roller is single-row or biserial.
4, bearing as claimed in claim 2 is characterized in that: be provided with little axle in one of centre circle aperture, its diameter and aperture driving fit.
5, the bearing of stating as claimed in claim 1, it is characterized in that: inner ring has 1: 12 tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267565 CN2505638Y (en) | 2001-10-12 | 2001-10-12 | Hollow and solid roller bearing with double-layer roller path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267565 CN2505638Y (en) | 2001-10-12 | 2001-10-12 | Hollow and solid roller bearing with double-layer roller path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2505638Y true CN2505638Y (en) | 2002-08-14 |
Family
ID=33673920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01267565 Expired - Fee Related CN2505638Y (en) | 2001-10-12 | 2001-10-12 | Hollow and solid roller bearing with double-layer roller path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2505638Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103025527A (en) * | 2010-07-28 | 2013-04-03 | 费利克斯博星有限两合公司 | Method for repairing a cylinder, and a cylinder |
-
2001
- 2001-10-12 CN CN 01267565 patent/CN2505638Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103025527A (en) * | 2010-07-28 | 2013-04-03 | 费利克斯博星有限两合公司 | Method for repairing a cylinder, and a cylinder |
| CN103025527B (en) * | 2010-07-28 | 2016-03-16 | 费利克斯博星有限两合公司 | A kind of roll repair welding method and roll |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |