CN2637440Y - Paper picking mechanism - Google Patents
Paper picking mechanism Download PDFInfo
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- CN2637440Y CN2637440Y CN 03275819 CN03275819U CN2637440Y CN 2637440 Y CN2637440 Y CN 2637440Y CN 03275819 CN03275819 CN 03275819 CN 03275819 U CN03275819 U CN 03275819U CN 2637440 Y CN2637440 Y CN 2637440Y
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- China
- Prior art keywords
- paper
- gear
- acquisition mechanism
- pickup roller
- capturing
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Abstract
The utility model discloses a paper capturing mechanism arranged at one side of a paper tractor, including: a drive gear connected with a power input shaft; a lazy gear meshing with the drive gear and the axes of the lazy gear is connected with the power input shaft by a first connecting rod; a paper capturing gear meshing with the lazy gear and the axes of the paper capturing gear is connected with the axes of the lazy gear by a second connecting rod; and a paper capturing roller positioned at one side of the paper capturing gear and having the same pivot with the paper capturing gear. When the paper capturing roller rotates in the direction of paper inputting, a moment is generated to maintain the paper capturing roller applying force on the top paper in the paper tractor, which provides automatic strength compensation for capturing the paper, at the same time, as the mechanism is simplified, the cost is reduced and the space is saved.
Description
Technical field
The utility model relates to a kind of paper acquisition mechanism that is used for office equipment, is meant that especially a kind of structure design is tending towards simplifying, and can save the paper acquisition mechanism in space simultaneously.
Background technology
Making rapid progress of numeral science and technology allows many electronic products universalness day by day, and incident technology is made a leapleap forward, and not only allows the volume miniaturization day by day of these electronic products, and in addition, " function integration " this market demand also forms one agitation.
Comprise chopping machine, duplicator, facsimile apparatus with the common office equipment of office, just be integrated into duplicating, printing, fax and scan function all-in-one multifunctional machine (Multi-Function Peripheral, MFP).Yet,, in the process of miniaturization, all must face compiling and reconfigure on the entity structure no matter be simple function or multi-functional office equipment; Therefore, the paper transport sector of playing an important role in these products comprises paper acquisition and connecting gear, and its simplifying is imperative.
Generally speaking, the paper transport sector of duplicator, chopping machine or facsimile apparatus all can have two rubber rolls that friction coefficient is bigger, and the one, pickup roller (pickup roller), another then is paper-feeding roller (feedroller); The paper of the superiors after pickup roller is separated, is sent to print module by paper-feeding roller with it again and prints earlier.Propulsion source can be configured between these two rubber rolls usually, again by transmission component such as gear cluster or belt, transmits power on these two rollers.
For utilizing pickup roller to capture for the paper acquisition mechanism of paper, because during gear transmission power, friction to each other can cause degradation of energy and produce noise, so clearly, the number of gear is few more good more.The requirement of another paper acquisition mechanism is, avoids because the difference of weight, density or rigidity paper properties such as (stiffness), causes multi-paper feed (multi-feeds) or problem that can't paper feed.
In order to allow pickup roller possess automatic compensation (automatic compensating) ability, pickup roller is designed to movably; Usually this requirement can make the design of paper acquisition mechanism be tending towards complicated, and overall volume also takes up space simultaneously.U.S. US 5527026 patents with LEXMARK company are example, its pickup roller (drive roller 13) is to be articulated on the gear of gear row (gear train a 1) lowermost end, gear row power wheel (drive gear 3) is foremost then fixed, this will make whole gear row and pickup roller move according to the paper number, make pickup roller remain on the top paper surface.Simultaneously, when all the gear rotations in the gear row drive pickup roller, can produce moment allows pickup roller apply positive force (normal force) in the top paper, because the size of this positive force can change along with paper property, so can get the size of paper strength at different paper characteristic automatic compensation, multi-paper feed or problem that can't paper feed can not take place.
In other words, if pickup roller is when being fixed on the movable terminal of a swing arm (for example aforesaid gear row), just can allow pickup roller contact with the top paper at any time, and though in the feeding box paper what, can also possess simultaneously get the paper positive force can with the ability along with the paper property increase and decrease.
But the paper-fetching mechanism of swing arm type has its not all roses part.For example in the example of the US of LEXMARK company 5527026 patents, each gear in the whole gear row is relatively-stationary, whole gear is listed in swings when getting paper, and its degree of freedom is not high.And when being listed in number of paper variation (or feeding box degree of depth) owing to gear, its mobile route is not directly to be stretched towards paper by power wheel, but moves in the mode of side on oscillation; Therefore must reserve bigger space and swing back and forth for whole gear row, this quite is unfavorable for the spatial design demand of miniaturization.
The utility model content
Technical problem to be solved in the utility model provides a kind of paper acquisition mechanism, can solve effectively that existing paper acquisition mechanism volume is big, complex structure, cost raise up and spatial design on puzzlement.
To achieve these goals, the invention provides a kind of paper acquisition mechanism, be arranged at a side of a feeding box, comprise: a transmission gear connects a power input shaft; One idle gear, with this transmission gear engagement, its axle center is connected with a first connecting rod with this power input shaft; One gets the paper gear, and with this idle gear engagement, its axle center is connected with a second connecting rod with the axle center of this idle gear; And a pickup roller, be located at this and get paper gear one side, and get the paper gear with this and have an identical pivot; Wherein, this power take-off shaft drives this transmission gear, gets paper gear transmission power through this idle gear and this, and drive this pickup roller and rotate towards a paper feed direction, the paper offset of this pickup roller the superiors in this feeding box, and force in this paper.
The paper acquisition mechanism wherein more comprises a U-shaped housing that is fixed in this feeding box inner edge as mentioned above, and aforementioned all these gears and this pickup roller all are positioned at this housing inner edge.
Aforesaid paper acquisition mechanism, wherein this housing is fixed in this feeding box inner edge by a contiguous block.
Aforesaid paper acquisition mechanism, wherein this housing has at least one position-limited trough and places activity for this pivot.
Aforesaid paper acquisition mechanism, wherein this housing is passed by this power input shaft.
Aforesaid paper acquisition mechanism, wherein this feeding box one side is provided with an elongated slot, places activity for this pivot.
Aforesaid paper acquisition mechanism, wherein the wheel face of this pickup roller has a high friction face and a low friction face.
Aforesaid paper acquisition mechanism, wherein this high friction face is to be formed by soft rubber.
Aforesaid paper acquisition mechanism wherein should be formed by the rigid plastic with smooth surface by low friction face.
Aforesaid paper acquisition mechanism wherein should be provided with at least one feed roller by low friction face.
The beneficial effects of the utility model are that its paper acquisition mechanism not only can provide pickup roller the self-conpensating paper strength of getting, and simultaneously more owing to the simplification of member configuration and the adjustment of operating mechanism, significantly reduces institute and takes up space.
Description of drawings
Fig. 1 is the stereo appearance figure of the utility model first preferred embodiment, and wherein feeding box is to be represented by dotted lines;
Fig. 2 is the stereo appearance figure of the utility model first preferred embodiment, and wherein feeding box and housing are to be represented by dotted lines;
Fig. 3 is the External view of the opposite side of the utility model first preferred embodiment;
Fig. 4 is the schematic side view of the utility model first preferred embodiment, and wherein the sidewall of feeding box removes;
Fig. 5 is the diagram of work of the utility model first preferred embodiment, and demonstration paper acquisition mechanism is got the state of paper;
Fig. 6 is the diagram of work of the utility model first preferred embodiment, shows the state of paper acquisition mechanism paper feed;
Fig. 7 is the diagram of work of the utility model first preferred embodiment, and demonstration paper acquisition mechanism is got the state of paper; And
Fig. 8 is the diagram of work of the utility model first preferred embodiment, shows the state of paper acquisition mechanism paper feed.
Wherein, description of reference numerals is as follows:
Contiguous block 111 position-limited troughs 112,113
Idle gear 130 is got paper gear 140
Low friction face 152 paper feeds wheel 153
First connecting rod 160 second connecting rods 170
Sidewall 210 paper feed direction 220
Distance D paper-feeding roller 300
Acquisition mechanism 400 pickup rollers 410
High friction face 411 power input shafts 420
Paper-feeding roller 500 paper 510
The specific embodiment
See also Fig. 1 to Fig. 6, the acquisition mechanism 100 of the utility model first paper that preferred embodiment provides, it is the inboard that is arranged at feeding box 200, mainly by housing 110, and be located at housing 110 inboards transmission gear 120, idle gear 130, get paper gear 140 and constitute with pickup roller 150, below describe in detail each member the position is set, the pass is and mode of operation mutually.
At first see also Fig. 1 to Fig. 4, housing 110 is into the U font, and the contiguous block 111 that side fixed is square is locked in acquisition mechanism 100 by this contiguous block 111 sidewall 210 inner edges of feeding box 200; In other words, housing 110 is fixed.Housing 110 proximal end places are provided with position-limited trough 112 (Fig. 1), 113 (Fig. 3) of linearity; In addition, housing 110 is passed by power input shaft 121, and this power input shaft 121 is two sidewalls 210 (another sidewall is not shown) that are set in feeding box 200, in the present embodiment, power take-off shaft 121 provides unidirectional rotary power (clockwise direction is seen Fig. 5 and Fig. 6).
Idle gear 130 and transmission gear 120 engagements, 121 of its axle center and power input shafts are connected with first connecting rod 160; This first connecting rod 160 is plates.
Get paper gear 140 and idle gear 130 engagements, its axle center also is connected with the axle center of idle gear 130 second connecting rod 170 by sheet.
More than be the structure and the interrelation of acquisition mechanism 100 each member.See also Fig. 5 and Fig. 6, and referring to figs. 1 to Fig. 4, in getting the paper process, the rotary power that power input shaft 121 provides (clockwise direction), to drive transmission gear 120, idle gear 130 in regular turn, get paper gear 140 and pickup roller 150, and make pickup roller 150 make clickwise towards paper feed direction 220.
In the whole acquisition mechanism 100, because the existence of position- limited trough 112 and 113, idle gear 130, get paper gear 140, pickup roller 150 is movably, and first connecting rod 160 can be swung with second connecting rod 170, when therefore working, gear rotation and and produce the result of friction force between connecting rod, can make first connecting rod 160 be subjected to clockwise moment 221, second connecting rod 170 is subjected to anticlockwise moment 222, generally speaking, make acquisition mechanism 100 except fixing part, have the tendency that the direction of paper 230 in feeding box 200 moves; Add pickup roller 150 and get paper gear 140,, move so pickup roller 150 can be partial to the below at last because of its pivot 180 is subjected to the restriction of position-limited trough 112,113 (position-limited trough 113 is not shown in figure), but substantially or towards paper 230.
When the high friction face 151 of pickup roller 150 is run into paper 230, the combined action of moment 221,222 and position-limited trough 112,113 restrictions thereof to first, second connecting rod, can make pickup roller 150 apply a positive force 223 in paper 230, and this positive force 223 can increase gradually, till paper 230 beginnings are moved towards page orientation 240.In other words, because the size of this positive force 223 can comprise weight, density or stiffness change along with paper property, so can get the size of paper strength at different paper characteristic automatic compensation, multi-paper feed or problem that can't paper feed can not take place, this is so-called automatic compensation ability.
Next, as shown in Figure 6, when paper 230 arrives paper-feeding roller 300 during towards page orientation miles of relative movement D, pickup roller 150 also rotates to paper feed wheel 153 contact paper 230 with low friction face 152 by its high friction face 151 simultaneously; This moment will be by paper-feeding roller 300 with paper 230 then to page orientation 240 transmission, take turns 1 53 as for paper feed and just move and rotate along with paper 230, can not have influence on moving of paper 230.Treat that paper 230 breaks away from paper feed and took turns at 153 o'clock, pickup roller 150 rotates to just and allows its high friction face 151 contact a piece of paper down.
Obviously, the length of high friction face 151 on the pickup roller 150, the distance D that moves to paper-feeding roller 300 with paper 230 is a height correlation, and the length of low friction face 152 also touches the time correlation of next paper with pickup roller 150, and these all must cooperate the automatically controlled details to adjust in practice.Moreover, not influencing under the prerequisite that paper 230 moves, paper feed wheel 153 can remove, and low friction face 152 is circular-arc, forms complete periphery with high friction face 151.
In addition, it all is high friction face that the wheel face of pickup roller can be designed as, see also Fig. 7 to Fig. 8, the utility model second preferred embodiment provides the another kind of acquisition mechanism 400 that extends, itself and the topmost difference of a last embodiment, be only have high friction face 411 on the pickup roller 410, its automatic guidance mechanism will be done to adjust a little.When getting paper, power input shaft 420 provides right-hand revolution power, makes pickup roller 410 move, contact, rotate and get paper towards paper 510 directions; When treating that paper 510 arrives paper-feeding roller 500, power input shaft 420 makes pickup roller 410 away from paper 510 left-hand revolution, continues to move with obstruction free paper 520.Secondly, the power input shaft 420 of present embodiment provides suitable, the two-way rotary power of conter clockwise only provides unidirectional rotary power different with last embodiment.
Must supplemental instruction be, the utility model housing stability when entire mechanism work can be provided is set, and provide the mobile route of position-limited trough restriction pickup roller, but be not imperative in the realization of the present invention just.When removing housing, can place activity for getting the shared pivot of paper gear and pickup roller in addition at the position-limited trough that is provided with on the feeding box on the elongated slot replacement housing, limit the mobile route of pickup roller.
Generally speaking, the utility model is different from the paper-fetching mechanism (as the US5527026 of LEXMARK company patent) of general swing arm type, a kind of paper acquisition mechanism with high-freedom degree is provided, it can change directly elongation total length with number of paper, the large space that does not need oscillating type mechanism, and simple in structure, volume is less, possesses the ability that automatic compensation is got paper strength equally; Simultaneously, the utility model also proposes a kind of later-model combined type pickup roller, only needs to get final product towards the unidirectional rotation of paper feed direction, makes the driving of paper acquisition mechanism more simple, reduces the automatically controlled complexity.
The above is preferred embodiment of the present utility model only, is not in order to limit the claim that the utility model is implemented; Any those skilled in the art not breaking away from the equalization variation of being done under spirit of the present utility model and the scope, all are included in the claim of the present utility model.
Claims (10)
1. paper acquisition mechanism is arranged at a side of a feeding box, it is characterized in that, comprises:
One transmission gear connects a power input shaft;
One idle gear, with this transmission gear engagement, its axle center is connected with a first connecting rod with this power input shaft;
One gets the paper gear, and with this idle gear engagement, its axle center is connected with a second connecting rod with the axle center of this idle gear; And
One pickup roller is located at this and is got paper gear one side, and gets the paper gear with this and have an identical pivot.
2. paper acquisition mechanism as claimed in claim 1 is characterized in that, also comprises a U-shaped housing that is fixed in this feeding box inner edge, described transmission gear, idle gear, gets the paper gear and this pickup roller all is positioned at this housing inner edge.
3. paper acquisition mechanism as claimed in claim 2 is characterized in that, this housing is fixed in this feeding box inner edge by a contiguous block.
4. paper acquisition mechanism as claimed in claim 2 is characterized in that this housing has at least one position-limited trough, and this pivot is set in this position-limited trough.
5. paper acquisition mechanism as claimed in claim 2 is characterized in that this power input shaft passes this housing.
6. paper acquisition mechanism as claimed in claim 1 is characterized in that, this feeding box one side is provided with an elongated slot, places activity for this pivot.
7. paper acquisition mechanism as claimed in claim 1 is characterized in that, the wheel face of this pickup roller has a high friction face and a low friction face.
8. paper acquisition mechanism as claimed in claim 7 is characterized in that, this high friction face is to be formed by soft rubber.
9. paper acquisition mechanism as claimed in claim 7 is characterized in that, this low friction face is to be formed by the rigid plastic with smooth surface.
10. paper acquisition mechanism as claimed in claim 7 is characterized in that, this low friction face is provided with at least one feed roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03275819 CN2637440Y (en) | 2003-07-10 | 2003-07-10 | Paper picking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03275819 CN2637440Y (en) | 2003-07-10 | 2003-07-10 | Paper picking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2637440Y true CN2637440Y (en) | 2004-09-01 |
Family
ID=34302174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03275819 Expired - Fee Related CN2637440Y (en) | 2003-07-10 | 2003-07-10 | Paper picking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2637440Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441485C (en) * | 2005-12-23 | 2008-12-10 | 上海烟草机械有限责任公司 | Prefabricated card-inserting device for lid-flip cigarette pack |
| CN101412476B (en) * | 2007-10-15 | 2010-09-01 | 泰金宝电通股份有限公司 | Connecting rod transmitted paper shield mechanism |
| CN103994192A (en) * | 2013-02-19 | 2014-08-20 | 崴强科技股份有限公司 | Transmission device of automatic paper feeding device |
| CN107031211A (en) * | 2016-02-03 | 2017-08-11 | 深圳市博思得科技发展有限公司 | Printer continues paper method, device and its applicable printer automatically |
-
2003
- 2003-07-10 CN CN 03275819 patent/CN2637440Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441485C (en) * | 2005-12-23 | 2008-12-10 | 上海烟草机械有限责任公司 | Prefabricated card-inserting device for lid-flip cigarette pack |
| CN101412476B (en) * | 2007-10-15 | 2010-09-01 | 泰金宝电通股份有限公司 | Connecting rod transmitted paper shield mechanism |
| CN103994192A (en) * | 2013-02-19 | 2014-08-20 | 崴强科技股份有限公司 | Transmission device of automatic paper feeding device |
| CN103994192B (en) * | 2013-02-19 | 2016-12-28 | 崴强科技股份有限公司 | The actuating device of automatic paper conveying apparatus |
| CN107031211A (en) * | 2016-02-03 | 2017-08-11 | 深圳市博思得科技发展有限公司 | Printer continues paper method, device and its applicable printer automatically |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040901 Termination date: 20120710 |