CN102616005B - Upper paper guider of printer - Google Patents
Upper paper guider of printer Download PDFInfo
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- CN102616005B CN102616005B CN201210066414.5A CN201210066414A CN102616005B CN 102616005 B CN102616005 B CN 102616005B CN 201210066414 A CN201210066414 A CN 201210066414A CN 102616005 B CN102616005 B CN 102616005B
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- wheel
- mainboard
- briquetting
- guiding device
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Abstract
The invention discloses an upper paper guider of a printer, which comprises a mainboard and a star wheel. The star wheel consists of a toothed wheel and a smooth wheel arranged on the toothed wheel by means of injection molding, an elastic shaft penetrates through the star wheel, the star wheel is placed in a mounting groove on the mainboard via the elastic shaft, a press cake is connected onto the smooth wheel of the star wheel in an abutted manner, a groove for holding the toothed wheel is arranged on an end surface of the press cake, which contacts with the star wheel, a compression spring is connected to the top end of the press cake, one end of a compression spring is connected to the top end of the press cake, the other end of the compression spring is connected to the lower side of a pressure plate in an abutted manner, and the pressure plate is fixedly mounted onto the mainboard. The star wheel is elastically fixed onto the mainboard of the upper paper guider, accordingly, the star wheel can be automatically lifted up according to the thickness of a printed medium under the wheel, squeezing force and friction force of a lower paper guiding roller pressing on the printed medium are uniform, abrasion of a rubber ring on the surface of the lower paper guiding roller is reduced, and the upper paper guider is simple in structure, convenient in installation and applicable to equipment such as a laser or ink-jet printer, a copier, a scanner and the like required in printing.
Description
Technical field
The present invention relates to paper guiding device on a kind of printer, belong to printer Design and manufacturing technology field.
Background technology
Along with the raising of office automation degree, increasing file all by electronic printable out instead of out hand-written, printer has played the effect can not be substituted in the process of being changed to paper part by soft copy, printer prints the print media of paper feed port as paper etc. is delivered to printer by upper paper guiding device and corresponding to the lower dancing roll of upper paper guiding device, the print media of having printed is exported by the upper paper guiding device of exit slot and corresponding to the lower dancing roll of upper paper guiding device, in prior art, upper paper guiding device is generally made up of mainboard and the pocket-wheel being arranged on mainboard, on lower dancing roll, be shaped with under corresponding with pocket-wheel and lead paper roller, print media between pocket-wheel and under lead between paper roller, pocket-wheel for compressing print media in case by under lead paper roller rotation friction and realize sending of print media and lead paper, but being perfect rigidity, pocket-wheel is fixedly mounted on the mainboard of paper guiding device on printer, this has just caused pocket-wheel lifting automatically, in the time sending the print media of different-thickness, easily cause print media under lead paper roller extruding force differ greatly, thereby under aggravation, lead the wearing and tearing of paper roller rubber surface circle, the service life of paper guiding device under scaled down printer, for the print media of uneven thickness, its thickness span is larger, in the time adopting the rigidly connected pocket-wheel of prior art to send, easily cause same axially (elastic shaft is axial) to send the inhomogeneous of power and make it that oblique displacement occur, cause the most at last printing crooked, in addition, because pocket-wheel rigidly fixes installation, therefore in order to adapt to the printing of sending of different-thickness print media, and consider down and lead paper roller wear-out life, general pocket-wheel and under to lead pressure between paper roller less, and frictional force when ensureing to send, conventionally adopt increase pocket-wheel and under lead paper roller group number solve, this has just increased manufacture material and cost, also increased the weight of printer, and during for the complete paper paper delivery of firm inkjet printing, because above paper, before the ink is dry, too much pocket-wheel and under lead paper roller group number and also can scratch ink marks, affect print quality.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides on a kind of mainboard that pocket-wheel elasticity is arranged on to upper paper guiding device can adapt to print media, the star wheels number of different-thickness and be difficult for less scratching paper guiding device on ink marks and printer simple and reasonable, easy for installation.
The technical solution adopted for the present invention to solve the technical problems is:
Paper guiding device on a kind of printer, it comprises mainboard and pocket-wheel, pocket-wheel is made up of toothed wheel and smooth wheel theing be injection-moulded in toothed wheel, in pocket-wheel, pass flexible axle and be shelved in the mounting groove on mainboard by elastic shaft, the smooth apical grafting of taking turns of described pocket-wheel has briquetting, briquetting is provided with the groove for accommodating toothed wheel with the contact end face of pocket-wheel, and the top of described briquetting is connected with stage clip, and the other end apical grafting of stage clip is below the pressing plate being fixedly installed on mainboard.
As the improvement of technique scheme, there is the sleeve column of socket stage clip on the top of briquetting to upper process.
As the further improvement of technique scheme, the root along continuous straight runs of described sleeve column is shaped with the projection of clamping stage clip.
Further, on the end face of described sleeve column, be provided with the blind hole for saving material weight reduction.
Preferably, on the inwall of described mainboard, be raised with the direction frame of living briquetting for frame along inwall normal direction, square box is along being shaped with the first breach on the axial two sides of elastic shaft.
Further, on the outer wall of described mainboard, be shaped with the groove for shelving elastic shaft two ends, on the mainboard of contiguous pocket-wheel one side of groove, be provided with the second breach.
Preferably, described pocket-wheel is double wheel.
The invention has the beneficial effects as follows: the present invention is by apical grafting briquetting on the smooth wheel face of pocket-wheel, on briquetting, be connected with the stage clip that applies certain pressure to briquetting, making pocket-wheel is that elasticity is arranged on the mainboard of paper guiding device, this just make pocket-wheel and corresponding with it under lead between paper roller, compress the pressure of print media can random fluctuation, when printer is during for different-thickness and print media in uneven thickness, pocket-wheel is led the pressure between paper roller under can automatically regulating together by stage clip, making down to lead paper roller, to be pressed in extruding force and frictional force on print media more even, the wearing and tearing of paper roller rubber surface circle are reduced time to lead, extend the service life of printer, simultaneously, also reduced pocket-wheel and under lead the group number of paper roller, in the time sending the complete print media of firm inkjet printing, be difficult for scratching ink marks, in addition, pocket-wheel is set to double wheel, further reduced pocket-wheel and under lead the group number of paper roller, make the more compact structure of whole printer reasonable.The present invention is simple in structure, easy for installation, and being applicable to laser or ink-jet printer, duplicator, scanner etc. needs on the equipment of printing.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is mounting structure schematic diagram of the present invention;
Fig. 2 is the partial enlarged drawing of A in Fig. 1;
Fig. 3 is the structural representation of bottom side of the present invention;
Fig. 4 is the partial enlarged drawing of B in Fig. 3;
Fig. 5 is that the present invention removes the structural representation after pressing plate;
Fig. 6 is the partial enlarged drawing of C in Fig. 5;
Fig. 7 is the structural representation of mainboard in the present invention;
Fig. 8 is the partial enlarged drawing of D in Fig. 7;
Fig. 9 is that the present invention removes the structural representation after mainboard and pressing plate;
Figure 10 is another angle side view of Fig. 9;
The structural representation of briquetting in Figure 11 the present invention;
Figure 12 is another angle side view of Figure 11;
Figure 13 is the structural representation of pressing plate;
Figure 14 is the present invention and the working state figure (for ease of observing, mainboard and pressing plate do not draw) of corresponding lower dancing roll;
Figure 15 is the partial enlarged drawing of E in Figure 14;
Figure 16 is the installation decomposing schematic representation of pocket-wheel on elastic rod in the present invention.
Detailed description of the invention
With reference to Fig. 1 ~ Figure 16, paper guiding device on a kind of printer of the present invention, it comprises mainboard 1 and pocket-wheel 2, pocket-wheel 2 is by toothed wheel 22 and be injection-moulded in smooth in toothed wheel 22 and take turns 21 and form, in pocket-wheel 2, pass flexible axle 3 and be shelved in the mounting groove 14 on mainboard 1 by elastic shaft 3, described pocket-wheel 2 smooth taken turns apical grafting on 21 briquetting 4, briquetting 4 is provided with the groove 41 for accommodating toothed wheel 22 with the contact end face of pocket-wheel 2, the top of described briquetting 4 is connected with stage clip 5, and the other end apical grafting of stage clip 5 is below the pressing plate 6 being fixedly installed on mainboard 1.There is the sleeve column 42 of socket stage clip 5 on the top of briquetting 4 to upper process, the diameter of sleeve column 42 is less than the width of briquetting 4, by sleeve column 42, stage clip 5 is socketed on briquetting 4, make stage clip 5 can not move and walk when paper guiding device is worked on of the present invention, and because the diameter of sleeve column 42 is less than the width of briquetting 4, this has just saved the manufacture material of briquetting 4, reduce the manufacturing cost and use cost of briquetting 4, also the weight that has alleviated briquetting 4, makes to use the printer of upper paper guiding device of the present invention lighter simultaneously.Pressing plate 6 is fastened on mainboard 1 by bolt 61, do not carry out while leading paper print job at printer, pressing plate 6 has certain pressure to stage clip 5 all the time, make stage clip 5 pressurizeds and briquetting 4 is produced to certain pressure, pressure is passed to pocket-wheel 2 by briquetting 4, upper paper guiding device of the present invention and lower dancing roll 7 cooperatings, make pocket-wheel 2 with and its corresponding on lower dancing roll 7 under lead and between paper roller 71, there is certain pressure, when leading paper while sending print media, by this pressure make pocket-wheel 2 and under lead paper roller 71 print media produced to certain frictional force to realize sending print media.
As the improvement of above-mentioned embodiment, the root along continuous straight runs of described sleeve column 42 is shaped with the projection 43 of clamping stage clip 5.Stage clip 5 is directly socketed in projection 43, with respect to stage clip 5 is socketed on sleeve column 42, increase the diameter of stage clip 5, also just having reduced spring K value is the rigidity of spring, spring diameter is larger, in the time being subject to identical pressure, the amount of spring compression that rigidity is less is larger, be that sensitivity is higher, so at the root of sleeve column 42, projection 43 this structures being set makes for different-thickness and print media in uneven thickness, the flexible sensitivity of pocket-wheel 3 is higher, also just make pocket-wheel 3 higher according to the flexible lifting precision of the print media of different-thickness, can make to lead paper time, it is basic identical that print media acts on down extruding force and the frictional force led on paper roller 71, the wearing and tearing of paper roller 71 are reduced time to lead, extend its service life.
As the further improvement of above-mentioned embodiment, on the end face of described sleeve column 42, be provided with the blind hole 421 for saving material weight reduction.The material of manufacturing briquetting 4 has more been saved in the setting of blind hole 421, has alleviated the weight of briquetting 4, has reduced briquetting 4 and the manufacturing cost and use cost of leading paper pocket-wheel structural assembly of the present invention.
Certainly, for the above-mentioned Installation Modes that is socketed stage clip 5 by sleeve column 42, a shrinkage pool also can be set on the top end face of briquetting 4, stage clip 5 is held in this shrinkage pool, can realize equally pocket-wheel 2 according to the difference of print media thickness and the function of automatic lifting.
Further, on the inwall of described mainboard 1, be raised with the direction frame 11 of living briquetting 4 for frame along inwall normal direction, square box 11 is along being shaped with the first breach 111 on the axial two sides of elastic shaft 3.The setting of square box 11 is in the process of upper and lower displacement, teeter to occur for fear of briquetting 4, increase the stability of briquetting 4 displacements, avoid with the deep-slotted chip breaker 41 wall contacts on briquetting 4, pocket-wheel 2 cannot being rotated because the swing of briquetting 4 causes pocket-wheel 2, there is leading paper difficulty, breach 111 is for the ease of elastic shaft 3 is shelved in mounting groove 14, and pocket-wheel 2 is installed easily.
Further, on the outer wall of described mainboard 1, be shaped with the groove 12 for shelving 3 liang of ends of elastic shaft, on the mainboard 1 of groove 12 contiguous pocket-wheel 2 one sides, be provided with the second breach 13.In the time that print media is thicker, pocket-wheel 2 can be subject to the extruding of print media and lifting, because the rigidity of stage clip 5 is very little, even if stage clip 5 compresses completely, pocket-wheel 2 and under lead between paper roller 71 to the pressure of print media still can and make print media with under to lead frictional force between paper roller 71 very large, cause under lead the accelerated wear test of paper roller 71 rubber surface circles, sometimes even there will be paper jam phenomenon, for this reason, the two ends of the elastic shaft 3 for elastic rod are shelved in the groove 12 on mainboard 1 outer wall, when pocket-wheel 2 liftings are when higher, just can make elastic shaft 3 be bent upwards, with further storage power, reduce print media with under lead the frictional force between paper roller 71, and the second breach 13 is also for the ease of elastic shaft 3 and pocket-wheel 2 are installed.
Preferably, described pocket-wheel 2 is double wheel.Two groups of toothed wheel 22 are installed on an elastic shaft 3 and smoothly take turns 21, change described pocket-wheel 2 into double wheel by original single wheel, make under same to lead paper roller 71 corresponding to two row's pocket-wheels, this has just reduced time leads the number of paper roller 7, makes more compact and reasonable of whole printer arrangement.
The operation principle of leading paper pocket-wheel structural assembly of the present invention is such: when printer is during in off working state, briquetting 4 under the effect of pressing plate 6 and stage clip 5 under lead paper roller 71 and possess certain pressure, in the time that printer is worked, due to pocket-wheel 2 and under lead and between paper roller 71, have certain pressure, under lead paper roller 71 rolling just can make pocket-wheel 2 and under lead paper roller 71 and print media produced to certain frictional force and print media is sent into printer and printed, in the time that the thickness of print media is different, for thinner print media, make elastic shaft 6 bending and make pocket-wheel 2 compress print media under the effect of stage clip 5, thicker print media can produce an extruding force upwards to pocket-wheel 2, make elastic rod elastic shaft 3 degree of being bent downwardly reduce or be bent upwards, and promote stage clip 5 and shrink, pocket-wheel 2 is upwards lifting just, to lead the extruding force of paper roller 71 under reducing together, also with regard to make print media under lead paper roller 71 frictional force reduce, the wearing and tearing of paper roller 7 are reduced time to lead, extend the service life of time leading paper roller 71, make printer not need often under replacing, to lead paper roller 71, and for print media in uneven thickness, because pocket-wheel 2 has the function of flexible lifting under the effect of stage clip 5, make the place at different-thickness, pocket-wheel 2 and under to lead paper roller 71 basic identical to the power of sending of print media, this just makes print media that oblique displacement can not occur, thereby has avoided printing the quality problems such as crooked.
In addition, because pocket-wheel 2 can be raised automatically according to the thickness of the lower print media of wheel, therefore when printer can work, pocket-wheel 2 with under lead the larger of pressure setting between paper roller 71, to make it have the enough power of sending to lead paper for the less print media of thickness, for the larger print media of thickness, under can not accelerating because the power of sending is excessive, lead the wearing and tearing of paper roller 7, while having avoided pocket-wheel 2 to rigidly fix being arranged on paper guiding device mainboard 1, if by pocket-wheel 2 with under lead pressure setting less of paper roller 71, cannot ensure that the less print media of thickness is had to the enough power of sending, if by pocket-wheel 2 with under lead pressure setting larger of paper roller 71, in the time sending the larger print media of thickness, can make the power of sending excessive, be print media with pocket-wheel 2 and under to lead frictional force between paper roller 71 excessive, thereby cause under lead paper roller 71 surfaces rubber ring wearing and tearing accelerate, shorten the service life of time leading paper roller 71, increase the frequency of leading paper roller 71 under changing.
Simultaneously, because it is larger to lead the pressure of paper roller 71 under pocket-wheel 1 is same, minimizing pocket-wheel 2 that just can be suitable and under lead the group number of paper roller 7, and change pocket-wheel 2 into double wheel, in ensureing enough to send power, further reduced pocket-wheel 2 and under lead the group number of paper roller 71, the minimizing of this group number is when sending the print media that firm printing sprayed China ink, under effectively having reduced, lead paper roller 71 with print media contact area, reduced, to the scratching of ink marks, to have improved print quality.
The above, be preferred embodiments of the present invention, but the present invention is not limited to above-described embodiment, as long as it reaches technique effect of the present invention with any same or analogous means, all should belong to protection scope of the present invention.
Claims (7)
1. paper guiding device on a printer, comprise mainboard (1) and pocket-wheel (2), pocket-wheel (2) is by toothed wheel (22) and be injection-moulded in smooth wheel (21) formation in toothed wheel (22), in pocket-wheel (2), be also shelved in the mounting groove (14) on mainboard (1) by elastic shaft (3) through flexible axle (3), it is characterized in that: the upper apical grafting of smooth wheel (21) of described pocket-wheel (2) has briquetting (4), the contact end face of the same pocket-wheel of briquetting (4) (2) is provided with the groove (41) for accommodating toothed wheel (22), the top of described briquetting (4) is connected with stage clip (5), the other end apical grafting of stage clip (5) is in pressing plate (6) below being fixedly installed on mainboard (1).
2. paper guiding device on a kind of printer according to claim 1, is characterized in that: there is the sleeve column (42) of socket stage clip (5) on the top of briquetting (4) to upper process.
3. paper guiding device on a kind of printer according to claim 2, is characterized in that: the root along continuous straight runs of described sleeve column (42) is shaped with the projection (43) of clamping stage clip (5).
4. paper guiding device on a kind of printer according to claim 2, is characterized in that: on the end face of described sleeve column (42), be provided with the blind hole (421) for saving material weight reduction.
5. paper guiding device on a kind of printer according to claim 1, it is characterized in that: on the inwall of described mainboard (1), be raised with the direction frame (11) of living briquetting (4) for frame along inwall normal direction, square box (11) is along being shaped with the first breach (111) on the axial two sides of elastic shaft (3).
6. paper guiding device on a kind of printer according to claim 1, it is characterized in that: on the outer wall of described mainboard (1), be shaped with the groove (12) for shelving elastic shaft (3) two ends, on the mainboard (1) of contiguous pocket-wheel (1) one side of groove (12), be provided with the second breach (13).
7. according to paper guiding device on a kind of printer described in any one in claim 1 ~ 6, it is characterized in that: described pocket-wheel (2) is double wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066414.5A CN102616005B (en) | 2012-03-13 | 2012-03-13 | Upper paper guider of printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066414.5A CN102616005B (en) | 2012-03-13 | 2012-03-13 | Upper paper guider of printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102616005A CN102616005A (en) | 2012-08-01 |
| CN102616005B true CN102616005B (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210066414.5A Active CN102616005B (en) | 2012-03-13 | 2012-03-13 | Upper paper guider of printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102616005B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552376B (en) * | 2013-10-30 | 2015-11-25 | 广州广电运通金融电子股份有限公司 | Information printing equipment |
| CN107097539B (en) * | 2013-11-12 | 2019-12-31 | 精工爱普生株式会社 | Printer with a movable platen |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058564A (en) * | 1990-07-20 | 1992-02-12 | 佳能株式会社 | Paper advance mechanism and have the ink jet recording of this mechanism |
| JPH10138587A (en) * | 1996-11-13 | 1998-05-26 | Fuji Xerox Co Ltd | Ink jet recorder |
| JP2002241010A (en) * | 2001-02-20 | 2002-08-28 | Seiko Epson Corp | Delivery driven roller installing device |
| JP2004167780A (en) * | 2002-11-19 | 2004-06-17 | Canon Inc | Recorder |
| CN202540978U (en) * | 2012-03-13 | 2012-11-21 | 新会江裕信息产业有限公司 | Upper paper guide for printer |
-
2012
- 2012-03-13 CN CN201210066414.5A patent/CN102616005B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058564A (en) * | 1990-07-20 | 1992-02-12 | 佳能株式会社 | Paper advance mechanism and have the ink jet recording of this mechanism |
| JPH10138587A (en) * | 1996-11-13 | 1998-05-26 | Fuji Xerox Co Ltd | Ink jet recorder |
| JP2002241010A (en) * | 2001-02-20 | 2002-08-28 | Seiko Epson Corp | Delivery driven roller installing device |
| JP2004167780A (en) * | 2002-11-19 | 2004-06-17 | Canon Inc | Recorder |
| CN202540978U (en) * | 2012-03-13 | 2012-11-21 | 新会江裕信息产业有限公司 | Upper paper guide for printer |
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| Publication number | Publication date |
|---|---|
| CN102616005A (en) | 2012-08-01 |
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