CN101577773B - Paper-discharging mechanism and automatic paper-feeding system using same - Google Patents
Paper-discharging mechanism and automatic paper-feeding system using same Download PDFInfo
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- CN101577773B CN101577773B CN2008100280562A CN200810028056A CN101577773B CN 101577773 B CN101577773 B CN 101577773B CN 2008100280562 A CN2008100280562 A CN 2008100280562A CN 200810028056 A CN200810028056 A CN 200810028056A CN 101577773 B CN101577773 B CN 101577773B
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- idle pulley
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Abstract
The invention relates to a paper-discharging mechanism applied to office equipment capable of scanning or printing on both sides. The paper-discharging mechanism comprises a paper-discharging tractionwheel, a paper-discharging idler wheel and an arc groove, wherein one roll shaft of the paper-discharging traction wheel is installed in the arc groove provided with a first end and a second end; the distance between the first end and the paper-discharging idler wheel is different from the distance between the second end and the paper-discharging idler wheel; and when the rotation direction of th e paper-discharging traction wheel changes, the roll shaft can transfer from the first end to the second end by means of the movement inertia. The invention also provides an automatic paper-feeding system adopting the paper-discharging mechanism. The paper-discharging mechanism can realize the up-and-down movement of the paper-discharging traction wheel without adopting equipment with high cost, such as an additional motor or an electromagnetic solenoid, and the like nor additionally adding parts, thereby having simple structure and low cost and effectively solving the problem of paper overlapping.
Description
Technical field
The present invention relates to a kind of paper delivery mechanism, particularly a kind of automatic paper feeding system that is applicable to the paper delivery mechanism of duplex printing scanning and adopts this paper delivery mechanism.
Background technology
The print scanned equipment of desktop PC peripheral hardware is because spatial limitation, path greater than antiquarian length can't be provided on the paper transport path on the mechanism for automatically feeding paper, thereby the mechanism for automatically feeding paper with duplex printing scan function can produce the overlapping phenomenon of paper and paper tail in paper carries out second scanning process, and because the fixed engagement frictional force (NIP) between paper-feeding roller can cause the paper damage of paper feed or transmission paper smoothly.
No. 6493060 patent of the U.S. that Hewlett-Packard has, announced on December 10th, 2002, disclosed the path overlap problem that three kinds of schemes solve second paper feed, wherein scheme one is the paper delivery driving wheel that big coefficient of friction is set, make frictional force between paper delivery driving wheel and the paper greater than the frictional force between paper and the paper, so that between the overlapping paper slide relative can take place, thereby do not influence the continuation paper feed; Scheme two is vertical moving paper delivery idle pulleys to change the gap length between paper delivery driving wheel and the paper delivery idle pulley, when making hanging togother, becomes this big gap and can prevent that paper from damaging; Scheme three is to adopt a paper delivery driving wheel to join the wheel group structure of two paper delivery idle pulleys, makes paper and paper tail can enter respectively in different paper delivery driving wheels and the paper delivery idle pulley gap, thereby avoids hanging togother.
This wherein, scheme one weak point is, hanging togother is between paper delivery driving wheel and paper delivery idle pulley the time because the gap is constant, held easily when paper is thicker tighter, thereby the damage that causes transmitting paper; Scheme two is to adopt devices such as higher motor of cost or o, to realize moving up and down of paper delivery idle pulley; Scheme three adopts wheels to avoid hanging togother, and the assembly of use is more, cost height not only, and may cause the type size bigger.
Therefore, provide a kind of simple in structure, scheme that cost is low, to solve the path overlap problem of second paper feed, extremely important.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of simple in structure, paper delivery mechanism that cost is low is provided, and the hanging togother in second paper feed path causes the problem that paper feed smoothly or paper damage when solving duplex printing or scanning.
Another technical problem that the present invention will solve is, the automatic paper feeding that a kind of size is little, cost is low system is provided, and the hanging togother in second paper feed path causes the problem that paper feed smoothly or paper damage in the time of can solving duplex printing or scanning.
For solving the problems of the technologies described above, the invention provides a kind of paper delivery mechanism, it comprises a paper delivery driving wheel, a paper delivery idle pulley and a deep-slotted chip breaker, this paper delivery driving wheel and this paper delivery idle pulley mesh or form a preset width gap, one roll shaft of this paper delivery driving wheel is installed in this deep-slotted chip breaker, this deep-slotted chip breaker has one first end and one second end, this first end and this second end respectively and the distance between this paper delivery idle pulley different, when this paper delivery driving wheel rotation direction changed, this roll shaft can be transferred to this second end from this first end by motional inertia.
Further, this paper delivery driving wheel meshes a gear, and by a motor driven, the center of circle of this gear and the center of circle of this deep-slotted chip breaker are same point to this paper delivery driving wheel by this gear.
Preferably, distance between this first end and this paper delivery idle pulley is less than the distance between this second end and this paper delivery idle pulley, and when this paper delivery driving wheel rotated counterclockwise, this roll shaft was positioned at first end of this deep-slotted chip breaker, when this paper delivery driving wheel clockwise rotated, this roll shaft was positioned at second end of this deep-slotted chip breaker.
Preferably, this paper delivery idle pulley also comprises a roll shaft, this paper delivery idle pulley roll shaft is installed in vertically the elongate slot, and support this paper delivery idle pulley roll shaft in vertical direction by an elastic parts, displacement according to this paper delivery driving wheel roll shaft, this paper delivery idle pulley roll shaft can be done moving on the vertical direction, makes this paper delivery driving wheel and this paper delivery idle pulley selectively keep engagement or formation clearance of predetermined width.Preferably, this elastic parts is a spring.
The present invention also provides a kind of automatic paper feeding system, this automatic paper feeding system comprises a paper delivery mechanism, this paper delivery mechanism comprises a paper delivery driving wheel, a paper delivery idle pulley and a deep-slotted chip breaker, one roll shaft of this paper delivery driving wheel is installed in this deep-slotted chip breaker, this deep-slotted chip breaker has one first end and one second end, this first end and this second end respectively and the distance between this paper delivery idle pulley different, when this paper delivery driving wheel rotation direction changed, this roll shaft can be transferred to this second end from this first end by motional inertia.
Further, this paper delivery driving wheel meshes a gear, and by a motor driven, the center of circle of this gear and the center of circle of this deep-slotted chip breaker are same point to this paper delivery driving wheel by this gear.
Preferably, distance between this first end and this paper delivery idle pulley is less than the distance between this second end and this paper delivery idle pulley, and when this paper delivery driving wheel rotated counterclockwise, this roll shaft was positioned at first end of this deep-slotted chip breaker, when this paper delivery driving wheel clockwise rotated, this roll shaft was positioned at second end of this deep-slotted chip breaker.
Preferably, this paper delivery idle pulley also comprises a roll shaft, this paper delivery idle pulley roll shaft is installed in vertically the elongate slot, and support this paper delivery idle pulley roll shaft in vertical direction by an elastic parts, displacement according to this paper delivery driving wheel roll shaft, this paper delivery idle pulley roll shaft can be done moving on the vertical direction, makes this paper delivery driving wheel and this paper delivery idle pulley remain engagement or formation clearance of predetermined width.
Preferably, this automatic paper feeding system also comprises a pick-up roller, one paper feed path, one paper output path, when one two-sided scanning feeding path, and at least one feed rolls, first of scanned document, document enters the one scan district via this paper feed path, enters a paper output box via this paper output path from this scanning area again; When scanning second, this paper delivery driving wheel counter-rotating is sent into this duplex scanning feeding path with document from this paper output box, and via this duplex scanning feeding path, document enters scanning area, and again via this paper output path, document enters this paper output box from this scanning area.
Paper delivery mechanism provided by the present invention, the roll shaft of its paper delivery driving wheel moves by motional inertia two ends in deep-slotted chip breaker, thereby can change gap between itself and the paper delivery idle pulley with its change that turns to, gap when therefore realizing hanging togother between this paper delivery driving wheel and the paper delivery idle pulley increases, and is beneficial to paper and transmits and prevent the paper damage smoothly.This design does not need to adopt expensive equipment such as extra motor or o, does not need additionally to increase parts yet, so simple in structure, cost is low, and can effectively solve the problem of hanging togother.
Automatic paper feeding provided by the invention system, owing to adopt above-mentioned paper delivery mechanism, not only simple in structure, cost is low, and can solve effectively duplex printing or when scanning second paper feed path the hanging togother problem that causes paper feed smoothly or paper to damage, therefore, this automatic paper feeding system can adopt short two-sided feeding path and the paper output path that adapts with this paper delivery mechanism, realizes printer or the less purpose of scanner type size.
Description of drawings
Fig. 1 is the automatic paper feeding system basic structure that provides of embodiment of the present invention and the illustrative view of paper delivery mechanism when document carried out single-sweep or scan first.
Fig. 2 is the enlarged drawing of paper delivery mechanism 90 among Fig. 1.
Fig. 3 is the automatic paper feeding system basic structure that provides of embodiment of the present invention and the illustrative view of paper delivery mechanism when having begun that just document carried out second scanning.
Fig. 4 is automatic paper feeding system basic structure and second illustrative view that scans paper delivery mechanism when hanging togother takes place that embodiment of the present invention provides.
Fig. 5 is the enlarged drawing of paper delivery mechanism 90 among Fig. 4.
Fig. 6 is the operation principle schematic diagram of this paper delivery mechanism 90.
Embodiment
The realization of automatic paper feeding during below with reference to the structure that illustrates automatic document feeder provided by the invention and paper delivery mechanism thereof and single duplex printing or scanning.
See also Fig. 1, the automatic paper feeding system that the present invention's one better embodiment provides, it comprises pick-up roller 10, divides paper bowl 20, feed rolls 30,40,50, feeding path 100, paper output path 200, duplex scanning feeding path 300 and paper delivery mechanism 90, wherein this paper delivery mechanism 90 comprises a paper delivery driving wheel 60 and a paper delivery idle pulley 70, and with a gear 80 of this paper delivery driving wheel 60 engagements.The power of CD-ROM drive motor (figure does not show) passes to this paper delivery driving wheel 60 by this gear 80.
See also Fig. 2 and Fig. 5, illustrate the structure and the start relation thereof of this paper delivery mechanism 90 in more detail.
Figure 2 shows that the structure and the start relation of paper delivery mechanism 90 when document carried out single-sweep or scan first.This paper delivery driving wheel 60 has a roll shaft 61, and this roll shaft 61 is installed in the deep-slotted chip breaker 62, and this deep-slotted chip breaker 62 comprises one first end 621 and one second end 622.This wherein, the distance of first end 621 and this paper delivery idle pulley 70 is less than the distance of this second end 622 with this paper delivery idle pulley 70.So, when this paper delivery driving wheel 60 rotated counterclockwise, this roll shaft 61 rested in first end 621 of this deep-slotted chip breaker 62.
Paper delivery idle pulley 70 has a roll shaft 71, and this roll shaft 71 is installed in vertically the elongate slot 72, and this roll shaft 71 supports by an elastic parts 73.In the present embodiment, this elastic parts 73 is preferably spring.So, when the roll shaft 61 of paper delivery driving wheel 60 is positioned at first end 621 of this deep-slotted chip breaker 62, because squeezing action and 73 pairs of these roll shafts 71 of this elastic parts of 60 pairs of paper delivery idle pulleys 70 of this paper delivery driving wheel apply a support force, make the roll shaft 71 of this paper delivery idle pulley 70 be equilibrated at an ad-hoc location of elongate slot 72, make this roll shaft 71 and the upper end of elongate slot 72 keep a segment distance.
See also Fig. 5, the structure of paper delivery mechanism 90 and start relation when hanging togother takes place in second scanning.At this moment, when paper delivery driving wheel 60 rotates in a clockwise direction, make roll shaft 61 rest in second end 622 of deep-slotted chip breaker 62.At this moment,, make gap increase between this paper delivery driving wheel 60 and this paper delivery idle pulley 70, the smooth transmission of paper and avoid the damage of paper when helping hanging togother because second end 622 is away from this paper delivery idle pulley 70.Certainly, transfer to second end 622 of deep-slotted chip breaker 62 when the roll shaft 61 of paper delivery driving wheel 60 after, along with moving on the paper delivery driving wheel 60, the roll shaft 71 of this paper delivery idle pulley 70 is under the effect of elastic parts 73, along this elongate slot 72 segment distance that moves up, rest in the upper end of this elongate slot 72 until this roll shaft 71.The roll shaft 71 of this paper delivery idle pulley 70 is installed in vertically the elongate slot 72 and by the supported in vertical direction structure of elastic parts 73, make the roll shaft 71 of this paper delivery idle pulley 70 be subjected to displacement and do moving on the vertical direction along with the roll shaft 61 of paper delivery driving wheel 60, thereby make this paper delivery idle pulley 70 and this paper delivery driving wheel 60 selectively keep engagement or form and be scheduled to and the gap of rational width is beneficial to the smooth transmission of paper.
It should be noted that, in this paper delivery mechanism 90, paper delivery driving wheel 60 turns to when changing, roll shaft 61 can be changed to the other end from an end-grain cutting of deep-slotted chip breaker 62 by motional inertia, and, in the process that roll shaft 61 is subjected to displacement, paper delivery driving wheel 60 can not break away from the meshing relation with this gear 80 all the time, and this is that the center of circle by the center of circle of this deep-slotted chip breaker 62 and this gear 80 is that the design of same point realizes.Wherein concrete principle is please in conjunction with consulting Fig. 6, the movement locus of the roll shaft 61 of this paper delivery driving wheel 60 in this deep-slotted chip breaker 62 is one section arc on the circumference 65, promptly the arc of this deep-slotted chip breaker 62 is one section arc of this circumference 65, the center of circle of this circumference 65 and the center of circle 81 of this gear 80 are designed to same point, promptly make circumference 65 and gear 80 be concentric circles, thereby radius R 2 sums of radius R of paper delivery driving wheel 60 1 and gear 80 equal the radius of this circumference 65, therefore this roll shaft 61 is when circumference 65 moves, and this paper delivery driving wheel 60 can remain the meshing relation with this gear 80.
Below in conjunction with Fig. 1 to Fig. 5, introduce the start process of the automatic paper feeding system that present embodiment provides.In conjunction with consulting Fig. 1 and Fig. 2, when first page of document 3 carried out single-sweep or scan first, document 3 cooperated under the transmission feed rolls 30 and its idle pulley 31 and feed rolls 40 and its idle pulley 41, enters scanning area 500 via feeding path 100.After scanning element 5 scanning,, be expelled in the paper output box 2 via paper output path 200 in cooperating under the transmission of feed rolls 50 and its idle pulley 51.When discharging document 3, the paper delivery driving wheel 60 of paper delivery mechanism 90 rotates counterclockwise, and its roll shaft 61 rests in an end of the close paper delivery idle pulley 70 of deep-slotted chip breaker, i.e. first end 621.
See also Fig. 3, when document needs duplex scanning, when first document that has scanned 3 its afterbody is expelled in the paper delivery mechanism 90, when promptly the afterbody of document 3 arrives between paper delivery driving wheel 60 and the paper delivery idle pulley 70, paper delivery driving wheel 60 is controlled by motor and is reversed, and promptly clockwise rotates.At this moment, paper delivery driving wheel 60 is owing to motional inertia, and its roll shaft 61 is transferred to second end 622 that rests in deep-slotted chip breaker 62, away from an end of paper delivery idle pulley 70.In cooperating under the transmission of paper delivery driving wheel 60 and paper delivery idle pulley 70, make the document 3 will enter duplex scanning feeding path 300, again via the cooperate transmission of feed rolls 50 with its idle pulley 52, and the transmission that cooperates of feed rolls 40 and idle pulley 41, the document 3 enters scanning area 500 once more and carries out second scanning.
See also Fig. 4 and Fig. 5, for the document 3 that carries out second scanning, because its size is greater than specially designed duplex scanning feeding path 300 and paper output path 200 length sums, therefore the time marquis who also is being fed when the afterbody of document 3, the head of document 3 has been waited to be expelled in the paper output box, and the overlapping end to end phenomenon of document occurs.Just, in the case, because the roll shaft 61 of paper delivery driving wheel 60 rests in the end away from paper delivery idle pulley 70, i.e. second end 622, the gap increases between paper delivery driving wheel 60 and the paper delivery idle pulley 70, makes overlapping end to end document can continue to be fed and discharge smoothly.
Automatic paper feeding provided by the invention system, owing to adopt above-mentioned paper delivery mechanism 90, not only simple in structure, cost is low, and can solve effectively duplex printing or when scanning second paper feed path the hanging togother problem that causes paper feed smoothly or paper to damage, therefore, this automatic paper feeding system can adopt short two-sided feeding path 300 and the paper output path 200 that adapts with this paper delivery mechanism, realizes printer or the less purpose of scanner type size.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (6)
1. paper delivery mechanism, comprise that a paper delivery driving wheel reaches the paper delivery idle pulley with respect to this paper delivery driving wheel, this paper delivery driving wheel can or form a preset width gap with this paper delivery idle pulley engagement, it is characterized in that, this paper delivery mechanism also comprises a deep-slotted chip breaker, one roll shaft of this paper delivery driving wheel is installed in this deep-slotted chip breaker, this deep-slotted chip breaker has one first end and one second end, this first end and this second end respectively and the distance between this paper delivery idle pulley different, according to the rotation direction of this paper delivery driving wheel, this roll shaft can by motional inertia relatively between this first end and this second end by displacement;
Wherein, this paper delivery driving wheel meshes a gear, and by a motor driven, the center of circle of this gear and the center of circle of this deep-slotted chip breaker are same point to this paper delivery driving wheel by this gear; And
This paper delivery idle pulley also comprises a paper delivery idle pulley roll shaft, this paper delivery idle pulley roll shaft is installed in vertically the elongate slot, and support this paper delivery idle pulley roll shaft in vertical direction by an elastic parts, displacement according to this paper delivery driving wheel roll shaft, this paper delivery idle pulley roll shaft can be done moving on the vertical direction, makes this paper delivery driving wheel and this paper delivery idle pulley selectively keep engagement or formation clearance of predetermined width.
2. paper delivery mechanism as claimed in claim 1, it is characterized in that distance between this first end and this paper delivery idle pulley is less than the distance between this second end and this paper delivery idle pulley, when this paper delivery driving wheel rotates counterclockwise, this roll shaft is positioned at first end of this deep-slotted chip breaker, when this paper delivery driving wheel clockwise rotated, this roll shaft was positioned at second end of this deep-slotted chip breaker.
3. paper delivery mechanism as claimed in claim 1 is characterized in that this elastic parts is a spring.
4. automatic paper feeding system, comprise a paper delivery mechanism, it is characterized in that, this paper delivery mechanism comprises a paper delivery driving wheel, a paper delivery idle pulley and a deep-slotted chip breaker, one roll shaft of this paper delivery driving wheel is installed in this deep-slotted chip breaker, and this deep-slotted chip breaker has one first end and one second end, this first end and this second end respectively and the distance between this paper delivery idle pulley different, according to the rotation direction of this paper delivery driving wheel, this roll shaft can by motional inertia relatively between this first end and this second end by displacement;
Wherein, this paper delivery driving wheel meshes a gear, and this paper delivery driving wheel is rotated by a motor driven by this gear, and the center of circle of this gear and the center of circle of this deep-slotted chip breaker are same point; And
This paper delivery idle pulley also comprises a paper delivery idle pulley roll shaft, this paper delivery idle pulley roll shaft is installed in vertically the elongate slot, and support this paper delivery idle pulley roll shaft in vertical direction by an elastic parts, displacement according to this paper delivery driving wheel roll shaft, this paper delivery idle pulley roll shaft can be done moving on the vertical direction, makes this paper delivery driving wheel and this paper delivery idle pulley selectively keep engagement or formation clearance of predetermined width.
5. automatic paper feeding as claimed in claim 4 system, it is characterized in that, distance between this first end and this paper delivery idle pulley is less than the distance between this second end and this paper delivery idle pulley, when this paper delivery driving wheel rotates counterclockwise, this roll shaft is positioned at first end of this deep-slotted chip breaker, when this paper delivery driving wheel clockwise rotated, this roll shaft was positioned at second end of this deep-slotted chip breaker.
6. automatic paper feeding as claimed in claim 4 system, it is characterized in that, this automatic paper feeding system also comprises a pick-up roller, one paper feed path, a paper output path, a two-sided scanning feeding path, and at least one feed rolls, during first of scanned document, document enters the one scan district via this paper feed path, enters a paper output box via this paper output path from this scanning area again; When scanning second, this paper delivery driving wheel counter-rotating is sent into this duplex scanning feeding path with document from this paper output box, and via this duplex scanning feeding path, document enters scanning area, and again via this paper output path, document enters this paper output box from this scanning area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100280562A CN101577773B (en) | 2008-05-09 | 2008-05-09 | Paper-discharging mechanism and automatic paper-feeding system using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100280562A CN101577773B (en) | 2008-05-09 | 2008-05-09 | Paper-discharging mechanism and automatic paper-feeding system using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101577773A CN101577773A (en) | 2009-11-11 |
| CN101577773B true CN101577773B (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100280562A Expired - Fee Related CN101577773B (en) | 2008-05-09 | 2008-05-09 | Paper-discharging mechanism and automatic paper-feeding system using same |
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| CN (1) | CN101577773B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6862137B2 (en) * | 2016-09-30 | 2021-04-21 | キヤノン株式会社 | Sheet transfer device, image forming device |
| CN113369187B (en) * | 2021-05-27 | 2023-03-28 | 安徽宏康特种金属材料有限公司 | Raw material dust removal device for alloy thermocouple sheath production |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0495448B1 (en) * | 1991-01-18 | 1996-06-12 | Eastman Kodak Company | Device for stacking and aligning individually supplied sheets |
| CN1143293A (en) * | 1995-08-11 | 1997-02-19 | 台湾全录股份有限公司 | Roll type recording paper flattening mechanism |
| US5988627A (en) * | 1998-04-06 | 1999-11-23 | Umax Data Systems Inc. | Paper-feeding apparatus |
| CN1256837A (en) * | 1997-04-01 | 2000-06-14 | 耶利米E·罗伯森 | Peripheral bus powered document scanning device |
| US6493060B2 (en) * | 1999-12-01 | 2002-12-10 | Hewlett-Packard Company | Duplexing in automatic document feeder utilizing a path shorter than the length of the document to be duplexed |
| EP1435297A1 (en) * | 2002-12-30 | 2004-07-07 | Samsung Electronics Co., Ltd. | Printing apparatus |
| CN1684891A (en) * | 2002-09-27 | 2005-10-19 | 松下电器产业株式会社 | Discrete paper feeder |
-
2008
- 2008-05-09 CN CN2008100280562A patent/CN101577773B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0495448B1 (en) * | 1991-01-18 | 1996-06-12 | Eastman Kodak Company | Device for stacking and aligning individually supplied sheets |
| CN1143293A (en) * | 1995-08-11 | 1997-02-19 | 台湾全录股份有限公司 | Roll type recording paper flattening mechanism |
| CN1256837A (en) * | 1997-04-01 | 2000-06-14 | 耶利米E·罗伯森 | Peripheral bus powered document scanning device |
| US5988627A (en) * | 1998-04-06 | 1999-11-23 | Umax Data Systems Inc. | Paper-feeding apparatus |
| US6493060B2 (en) * | 1999-12-01 | 2002-12-10 | Hewlett-Packard Company | Duplexing in automatic document feeder utilizing a path shorter than the length of the document to be duplexed |
| CN1684891A (en) * | 2002-09-27 | 2005-10-19 | 松下电器产业株式会社 | Discrete paper feeder |
| EP1435297A1 (en) * | 2002-12-30 | 2004-07-07 | Samsung Electronics Co., Ltd. | Printing apparatus |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2001-10739A 2001.01.16 |
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