CN201471821U - Gear backlash adjusting mechanism of offset press - Google Patents
Gear backlash adjusting mechanism of offset press Download PDFInfo
- Publication number
- CN201471821U CN201471821U CN 200920167873 CN200920167873U CN201471821U CN 201471821 U CN201471821 U CN 201471821U CN 200920167873 CN200920167873 CN 200920167873 CN 200920167873 U CN200920167873 U CN 200920167873U CN 201471821 U CN201471821 U CN 201471821U
- Authority
- CN
- China
- Prior art keywords
- gear
- fixed cover
- bearing pin
- offset press
- circular hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a gear backlash adjusting mechanism of an offset press, comprising a roller, a wheel hub and a gear, wherein the end surface of the roller is provided with the wheel hub which is sheathed with the gear that is provided with a round hole; the round hole is internally connected with an expanding device; and two sides of the expanding device are provided with through holes convenient for expanding. The gear backlash adjusting mechanism has the advantages that the round hole is expanded outwards by the expanding device, and the shape and the position of the surface of the gear are changed, so that the fit clearance between two gears can be reduced, and the stability of transferring paper is ensured.
Description
Technical field
The utility model relates to a kind of offset press gear backlash guiding mechanism, comprises roller hub and gear, is with gear on the described wheel hub.
Background technology
The transfer roller of offset press and impression cylinder are realized handing-over by gear, and traditional gear clearance is non-adjustable, its processing and installation accuracy have just determined the quality of fit between the gear, therefore require very high to processing, installation accuracy, gear backlash can't be guaranteed in this case, has influenced the stability of paper handing-over.
The utility model content
The technical problems to be solved in the utility model provides a kind of offset press gear backlash guiding mechanism, but has the gap between the adjusting gear, improves the advantage of paper handing-over stability.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of offset press gear backlash guiding mechanism, comprise roller hub and gear, be with gear on the described wheel hub, its innovative point is: have circular hole on the described gear, be connected with extension fixture in the described circular hole, both sides have the through hole of being convenient to expand.
Further, the structure of described extension fixture is: the column type fixed cover is installed in the circular hole, described fixed cover has gathering sill near a side of gear centre, the adjusting skewback is housed in the described gathering sill, being connected with in the fixed cover can be along the axially movable adjusting bearing pin of fixed cover, described adjusting bearing pin is the inclined-plane with the contact-making surface of regulating skewback, be connected with adjusting nut between the front end of described adjusting bearing pin and the fixed cover, described adjusting nut medial and lateral have and regulate the internal and external screw thread that bearing pin and fixed cover cooperate, and are fixed with gland in the outer face of fixed cover.
Further, the internal thread pitch of described adjusting nut is greater than externally threaded pitch.
Advantage of the present utility model is: the difference of the inside and outside pitch by adjusting nut, make and regulate moving axially of bearing pin, regulating the inclined-plane of bearing pin gives the adjusting skewback pressure perpendicular to the inclined-plane, under gathering sill and both effects of wheel hub, regulate skewback and make circular hole expand outwardly along gear pressure radially for one of the circular hole of gear, cause the morpheme of the flank of tooth to change, thereby reduce the fit clearance between the gear, guaranteed the stability of paper handing-over.
Description of drawings
Fig. 1 is the structural representation of offset press gear backlash guiding mechanism of the present utility model.
Fig. 2 is the structural representation of gear of the present utility model.
The specific embodiment
As shown in Figure 1, 2, comprise gear 3, circular hole 4, through hole 6, fixed cover 7, adjusting skewback 5, adjusting bearing pin 8, adjusting nut 2, gland 1.
Above-mentioned cylinder end face is equipped with wheel hub, is with gear 3 on the wheel hub, has circular hole 4 on described gear 3, is connected with extension fixture in this circular hole 4, and the both sides of circular hole 4 have the through hole of being convenient to expand 6.By extension fixture the expansion of circular hole 4 is reached the purpose of the flank of tooth morpheme that changes gear 3, thereby reduce the fit clearance between the mate gear 3.
The concrete structure of this extension fixture is: column type fixed cover 7 is installed in the circular hole 4, side at fixed cover 7 close gear 3 centers has gathering sill, be equipped with in this gathering sill and regulate skewback 5, being connected with in the fixed cover 7 can be along fixed cover 7 axially movable adjusting bearing pin 8, and this adjusting bearing pin 8 is the inclined-plane with the contact-making surface of regulating skewback 5.Be connected with adjusting nut 2 between the front end of described adjusting bearing pin 8 and the fixed cover 7, described adjusting nut 2 inside and outside sides have and regulate the internal and external screw thread that bearing pin 8 and fixed cover 7 cooperate, and the internal thread pitch of described adjusting nut 2 is greater than externally threaded pitch.Also be fixed with in the outer face of fixed cover 7 and prevent fixed cover 7 axially movable glands 1.
During use, use spanner rotary mediation nut 2, because the internal thread pitch that cooperates with adjusting bearing pin 8 is greater than the external screw thread that cooperates with fixed cover 7, therefore a relative displacement can take place with adjusting bearing pin 8 in fixed cover 7, and the outer face of fixed cover 7 is fixed with and prevents its axially movable gland 1, therefore regulating bearing pin 8 outwards moves vertically, at this moment, regulate the inclined-plane of bearing pin 8 and give 5 one the pressure of adjusting skewback that contact with its surface perpendicular to the inclined-plane, and under the effect of the gathering sill of fixed cover 7, be converted into along gear 3 thrust radially, make that regulating skewback 5 has the trend that moves to gear 3 centers, and because the center position of gear 3 is fixed with wheel hub, and the effect of power is mutual, therefore regulates skewback 5 this active force is changed along gear 3 radially outer thrusts, cause circular hole 4 deformation that deviate from gear 3 centers one side, thereby change the flank of tooth morpheme of gear 3, reach the purpose that reduces gear 3 sideshakes, guaranteed the stability of paper handing-over.
Claims (3)
1. an offset press gear backlash guiding mechanism comprises roller hub and gear, is with gear on the described wheel hub, it is characterized in that: have circular hole on the described gear, be connected with extension fixture in the described circular hole, both sides have the through hole of being convenient to expand.
2. a kind of offset press gear backlash guiding mechanism according to claim 1, it is characterized in that: the structure of described extension fixture is: the column type fixed cover is installed in the circular hole, described fixed cover has gathering sill near a side of gear centre, the adjusting skewback is housed in the described gathering sill, being connected with in the fixed cover can be along the axially movable adjusting bearing pin of fixed cover, described adjusting bearing pin is the inclined-plane with the contact-making surface of regulating skewback, be connected with adjusting nut between the outer end of described adjusting bearing pin and the fixed cover, in the described adjusting nut, the outside have with regulate that bearing pin and fixed cover cooperate in, external screw thread, and be fixed with gland in the outer face of fixed cover.
3. a kind of offset press gear backlash guiding mechanism according to claim 1, it is characterized in that: the internal thread pitch of described adjusting nut is greater than externally threaded pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920167873 CN201471821U (en) | 2009-07-31 | 2009-07-31 | Gear backlash adjusting mechanism of offset press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920167873 CN201471821U (en) | 2009-07-31 | 2009-07-31 | Gear backlash adjusting mechanism of offset press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201471821U true CN201471821U (en) | 2010-05-19 |
Family
ID=42408065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920167873 Expired - Fee Related CN201471821U (en) | 2009-07-31 | 2009-07-31 | Gear backlash adjusting mechanism of offset press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201471821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103619592A (en) * | 2011-02-15 | 2014-03-05 | 艾美株式会社 | Plate cylinder drive device in printing machine |
-
2009
- 2009-07-31 CN CN 200920167873 patent/CN201471821U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103619592A (en) * | 2011-02-15 | 2014-03-05 | 艾美株式会社 | Plate cylinder drive device in printing machine |
| CN103619592B (en) * | 2011-02-15 | 2015-11-25 | 艾美株式会社 | The plate cylinder drive unit of printing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |