CN205257551U - Paper separator and image forming device - Google Patents
Paper separator and image forming device Download PDFInfo
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- CN205257551U CN205257551U CN201520771213.4U CN201520771213U CN205257551U CN 205257551 U CN205257551 U CN 205257551U CN 201520771213 U CN201520771213 U CN 201520771213U CN 205257551 U CN205257551 U CN 205257551U
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- ratchet
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Abstract
The utility model relates to the field of machinary, a paper separator and image forming device is disclosed. The utility model discloses in, paper separator include: paper separation roller, cylindric ratchet and driver part, paper separation roller has the paper of drive separation roller pivoted paper separation pivot, driver part and the coaxial setting of paper separation pivot, under the first intermeshing of the tooth portion state of the second tooth portion of ratchet and paper separation pivot, the driver part makes the ratchet yoshino separate the pivot and rotates simultaneously, the driver part being provided with the friction parts between the paper separation pivot surface relative with the ratchet, and under second tooth portion and the first disjuncture of each other of tooth portion, because friction parts and the paper separation pivot that produces and the frictional force between the ratchet are enough to resist and rotate when only being followed to the ratchet. The utility model discloses a paper separator has increased the friction part, can increase ratchet and the frictional force of separation between the pivot, effectively solves the ratchet and can't reset and lead to paper separation pivot stall.
Description
Technical field
The utility model relates to mechanical field, more specifically, relates to paper separator, and has applied the image processing system of this paper separator.
Background technology
The paper separator using at present, as shown in Figure 1, comprises paper separate roller 6, separate sheet 7 (not shown), ratchet 23 and driver part 23, and wherein, paper separate roller 6 comprises the paper separating rotary shaft 25 with driver part 23 and ratchet 24 axial arrangement. In paper separation process, the second 24a of tooth portion of ratchet 24 engages with the first 25a of tooth portion of paper separating rotary shaft 25, driver part 23 makes paper separating rotary shaft 25 rotate when driving pawl 24 rotates, thereby makes the surface of the paper separate roller 6 that paper separating rotary shaft 25 supports can coordinate separate sheet 7 that manuscript paper is separated.
Under normal condition, at the first 25a of tooth portion and the second 24a of tooth portion during in released state, if driver part driving pawl rotates, jut 23a on driver part 23 can contact with the bottom surface 24c of the breach on ratchet 24, the second 24a of tooth portion that promotes ratchet 24 moves to the first 25a of tooth portion of paper separating rotary shaft 25, and in the time that the jut 23a of driver part 23 meets the sidewall 24d in ratchet 24 downstreams, the second 24a of tooth portion and the first 25a of tooth portion engage completely, be that ratchet 24 resets, drive separate roller to complete the separation of paper below.
But, in some cases, between driver part 23 and ratchet 24, can produce enough large absorption affinity and make jut 23a cannot promote ratchet 23 to move to the first 25a of tooth portion, ratchet cannot reset, and just cannot promote paper separate roller 6 and rotate. For example, under dry environment, paper separator is separating meeting generation static after a large amount of manuscript paper, static focus is on driver part 23 and ratchet 24, and increase to gradually enough large, ratchet 24 is adsorbed onto on driver part 23, jut 23a cannot promote ratchet 24 and move to separating rotary shaft 25, now, ratchet 24 can only be followed driver part 23 and be rotated together, and the second 24a of tooth portion can not with the first 25a of tooth portion engagement, ratchet 24 cannot drive separating rotary shaft 25 and separate roller 6 to rotate, and produces the phenomenon that manuscript paper cannot separated conveying. Or in other situations such as ink pollution, also can produce this problem.
Japanese Patent Laid-Open 2006-232430 discloses a kind of paper feeding device, and this paper feeding device, by setting up an organization 56 and 57, can, in the time not having driver part to drive, automatically reset ratchet.
Utility model content
In order to address the above problem, the utility model discloses a kind of paper separator and application thereof, can increase the frictional force between ratchet and separating rotary shaft, assist driver part to promote ratchet has moved reset from ratchet to paper separate roller, effectively solve ratchet and cannot reset and cause paper separating rotary shaft to stop operating, and then make the problem that paper can not be separated.
For solving the problems of the technologies described above, this uses novel embodiment to disclose a kind of paper separator, comprising:
Paper separate roller, has the paper separating rotary shaft that drives paper separate roller to rotate, and is provided with the first tooth portion on paper separating rotary shaft;
Ratchet cylindraceous, ratchet is enclosed on paper separating rotary shaft, on ratchet, be provided with the second tooth portion that can engage with the first tooth portion, ratchet has the axially movable free degree along paper separating rotary shaft, makes the first tooth portion and the second tooth portion can be in state disconnected from each other and the state that intermeshes;
Driver part, coaxially arranges with paper separating rotary shaft, and under the state of intermeshing, driver part rotates ratchet and paper separating rotary shaft simultaneously;
Between the paper separating rotary shaft surface relative with ratchet, be provided with friction means, and under state disconnected from each other, when the frictional force between paper separating rotary shaft and the ratchet producing due to friction means is enough to resist ratchet only with driver part, rotate.
By increase friction means part between ratchet and paper separating rotary shaft, can be attracted to cannot move to the first tooth portion of paper separating rotary shaft on driver part time at ratchet, increase the frictional force between ratchet and paper separating rotary shaft, assist the jut promotion ratchet of driver part to move to the first tooth portion of paper separating rotary shaft, and finally make the second tooth portion of ratchet and the second tooth portion of paper separating rotary shaft engage, complete the reset of ratchet. And then effectively solve ratchet and be adsorbed on driver part and can not reset and cause the indissociable problem of paper, realize separating rotary shaft and continue ceaselessly to rotate.
In a preference, on above-mentioned driver part, have along the jut of projection radially outward;
The breach on the axial plane of ratchet with setting corresponding to jut, the bottom surface of breach and sagittal plane are at angle; Along the direction of rotating, the distance of the downstream of bottom surface and the second tooth portion is greater than the upstream side of bottom surface and the distance of the second tooth portion;
Under the state of intermeshing, in the time of the sidewall butt in the downstream in rotational direction of driver part rotation and jut and breach, driver part promotes ratchet and rotates together with paper separating rotary shaft.
In another preference, driver part has the radially raised ring of projection, and jut is arranged on raised ring;
Raised ring is coaxial with ratchet and paper separating rotary shaft, and ratchet is vertically between the first tooth portion of raised ring and paper separating rotary shaft, and the distance between raised ring and the first tooth portion is greater than ratchet Breadth Maximum vertically.
In another preference, the first surface that above-mentioned relative surface is ratchet and the second surface of paper separating rotary shaft, friction means is arranged on radially relative with the first surface of the ratchet second surface of paper separating rotary shaft.
In another preference, the first surface that above-mentioned relative surface is ratchet and the second surface of paper separating rotary shaft, friction means is arranged on radially relative with the second surface of the paper separating rotary shaft first surface of ratchet.
In another preference, friction means and ratchet are integrally formed. Wherein, by friction means and being made of one of ratchet structure, be convenient to assembling, can save structure and take up space, effectively improve reliability, and reduce costs.
In another preference, above-mentioned first surface is the first periphery, and second surface is the second periphery, and the first periphery and the second periphery are coaxial; Friction means comprises N friction subassembly, and friction subassembly is arranged to lay respectively at the N equally divided position on the circumference of the second periphery, and wherein, N is more than or equal to 2 positive integer. Wherein, friction subassembly is arranged on to the second periphery N equally divided position, can reach good concentricity, make the data of the friction torque between friction means and ratchet and paper separating rotary shaft more stable, the stability of the conveyance to the paper after separating does not exert an influence, and then maintenance is printed or duplicating image quality is unaffected.
In another preference, above-mentioned first surface is the first periphery, and second surface is the second periphery, and the first periphery and the second periphery are coaxial; Friction means comprises N friction subassembly, and friction subassembly is arranged to lay respectively at the N equally divided position on the circumference of the first periphery, and wherein, N is more than or equal to 2 positive integer. Friction subassembly is arranged on to the first periphery N equally divided position, can reach good concentricity, make the data of the friction torque between friction means and ratchet and paper separating rotary shaft more stable, the stability of the conveyance to the paper after separating does not exert an influence, and then maintenance is printed or duplicating image quality is unaffected.
In another preference, N equals 3.
In another preference, friction subassembly is elastic arm.
In another preference, friction means, ratchet and paper separating rotary shaft are made up of identical material. Wherein, the making material of friction means, ratchet and the first axle part is identical reduces the spillage of material that phase mutual friction causes.
In another preference, friction means, ratchet and paper separating rotary shaft are by being made up of non-conductive plastic material. Non-conductive plastic material can reduce agency cost, and simplifies the moulding process of parts.
Real-time mode of the present utility model also discloses a kind of image processing system, comprising:
Disclosed any paper separator of above-mentioned real-time mode and preference.
Brief description of the drawings
Fig. 1 is the structural representation of paper separator of the prior art.
Fig. 2 (a) is the structural representation of the paper separator in the utility model the first embodiment; Fig. 2 (b) is the structural representation of the each parts in paper separator in the utility model the first embodiment.
Fig. 3 (a) and (b) be the force analysis figure between each parts in the paper separator in the utility model the first embodiment.
Fig. 4 (a) is the sectional view of the paper separator shown in Fig. 1 along face A-A; Fig. 4 (b) is the upward view of the ratchet 24 in the utility model the second embodiment.
Fig. 5 is the structural representation of the paper feeding device of a kind of image processing system in the utility model the 3rd embodiment.
The paper separator comprising in the paper feeding device of a kind of image processing system when Fig. 6 in the utility model the 3rd embodiment and the structural representation of paper pick device.
Detailed description of the invention
In the following description, in order to make reader understand the utility model better, many ins and outs have been proposed. But, persons of ordinary skill in the art may appreciate that even without these ins and outs and the many variations based on following embodiment and amendment, also can realize the each claim of the utility model technical scheme required for protection.
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail. In the record of the following drawings, identical or similar Reference numeral instruction identical or similar parts and assembly, and likely description thereof is omitted.
The first embodiment of the present utility model relates to a kind of paper separator. Fig. 2 (a) is the structural representation of this paper separator, and Fig. 2 (b) is the structural representation of the each parts in this paper separator.
Specifically, as shown in Fig. 2 (a)-(b), this paper separator comprises paper separate roller 6, ratchet cylindraceous 24, friction means, driver part 23 and separate sheet 7 (not shown)s.
Paper separate roller 6 has the paper separating rotary shaft 25 that drives paper separate roller 6 to rotate, and is provided with the first 25a of tooth portion on paper separating rotary shaft 25. Ratchet 24 cylindraceous is enclosed on paper separating rotary shaft 25, is provided with second 24a of tooth portion that can engage with the first 25a of tooth portion on ratchet 24. Driver part 23 coaxially arranges with paper separating rotary shaft 25, on driver part 23, have along the jut 23a of projection radially outward, simultaneously, driver part 23 has the radially raised ring 23b of projection, and it is upper that jut 23a is arranged at raised ring 23b, and raised ring 23b is coaxial with ratchet 24 and paper separating rotary shaft 25. Between paper separating rotary shaft 25 surface relative with ratchet 24, be provided with friction means 26.
Ratchet 24 has the axially movable free degree along paper separating rotary shaft, make the first 25a of tooth portion and the second 24a of tooth portion can be in state disconnected from each other and the state that intermeshes, be ratchet 24 vertically between the first 25a of tooth portion of raised ring and paper separating rotary shaft 25, the distance between raised ring and the first 25a of tooth portion is greater than ratchet Breadth Maximum vertically. Under the state of intermeshing, driver part 23 rotates ratchet 24 and paper separating rotary shaft 25 simultaneously, particularly, has the breach of setting corresponding to jut 23a on the axial plane of ratchet 24, and the bottom surface 24c of breach and sagittal plane are at angle; Along the direction (if rotating speed is ω 1, rotation direction as shown by arrows) of rotating, the distance of the downstream of bottom surface and the second 24a of tooth portion is greater than the distance of upstream side and second 24a of tooth portion of bottom surface. Under the state of intermeshing, in the time of the sidewall 24d butt in the downstream in rotational direction of driver part 23 rotations and jut and breach, driver part 23 promotes ratchet and rotates together with paper separating rotary shaft. And under state disconnected from each other, when being enough to resist ratchet 24 only with driver part 23, the frictional force between paper separating rotary shaft 25 and the ratchet 24 producing due to friction means 26 rotates. Utilize the difference of the frictional force size between original copy and paper separate roller 6, original copy and separate sheet 7, paper separate roller 6 will heavily be delivered to this original copy, realizes original copy and separates one by one conveyance.
It should be noted that friction means 26 both can be arranged on ratchet 24 in each embodiment of the present utility model, also can be arranged on paper separating rotary shaft 25. For example, in a preference, the first surface (not shown) that above-mentioned relative surface is ratchet 24 and the second surface 25c of paper separating rotary shaft 25, friction means 26 is arranged at radially relative with the first surface of the ratchet 24 second surface 25c upper (region as shown in dotted line frame B2) of paper separating rotary shaft 25. Now, friction means 26 keeps in touch with first surface. Preferably, friction means 26 is integrally formed with paper separating rotary shaft 25. By friction means and being made of one of paper separating rotary shaft structure, be convenient to assembling, can save structure and take up space, effectively improve reliability, and reduce costs.
And in another preference, the first surface that above-mentioned relative surface is ratchet 24 and the second surface 25c of paper separating rotary shaft 25, friction means 26 is arranged on radially relative with the second surface 25c of paper separating rotary shaft 25 first surface of ratchet 24 (region as shown in dotted line frame B1). Now, friction means 26 keeps in touch with second surface 25c. Preferably, friction means 26 is integrally formed with ratchet 24. By friction means and being made of one of ratchet structure, be convenient to assembling, can save structure and take up space, effectively improve reliability, and reduce costs.
In addition, be appreciated that in other embodiments, friction means also can directly be placed in the region between first surface and second surface, might not be arranged on first surface or on second surface.
In addition, being appreciated that the shape of friction means 26 is not limit, can being made up of multiple friction subassemblies, as elastic arm, can be also the parts of ring-type, is enclosed within second surface 25c above or is embedded in first surface inside. The position that friction means 26 is arranged on first surface or second surface 25c is not limit, and can determine according to concrete actual conditions.
In addition, the making material that is appreciated that friction means 26 can have multiple, for example, friction means 26, ratchet 24 and paper separating rotary shaft 25 are made up of identical material, are reduced and the making material of friction means, ratchet and the first axle part is identical the spillage of material that phase mutual friction causes. Preferably, friction means, ratchet and paper separating rotary shaft, by being made up of non-conductive plastic material, to reduce agency cost, and are simplified the moulding process of parts.
The course of work of above-mentioned paper separator is as follows:
At the first 25a of tooth portion of paper separating rotary shaft 25 and the second 24a of tooth portion of ratchet 24 during in released state, driver part 23 rotates with rotational speed omega 1 along the direction of the middle arrow of Fig. 2 (a), if now there is larger electrostatic force or increase because the problems such as ink pollution cause the absorption affinity between ratchet 24 and driver part 23 between ratchet 24 and driver part 23, due to the existence of friction means 26, frictional force between the second surface 25c of friction means 26 and ratchet 24 and separating rotary shaft 25 increases, make ratchet 24 reduce or not rotate with driver part 23 with driver part 23 velocities of rotation, and then make jut 23 move to sidewall 24d and to offset with the bottom surface 24c contact of ratchet 24 relative bottom surface 24c, now the second 24a of tooth portion engagement of the first 25a of tooth portion of paper separating rotary shaft 25 and ratchet 24, ratchet 24 resets, continuing to promote paper separate roller 6 rotates, realize the separation to paper.
Being analyzed as follows of frictional force in above-mentioned paper separator between friction means increase ratchet and paper separating rotary shaft:
Fig. 3 (a) and (b) be the force analysis figure between each parts in paper separator, as shown in Fig. 3 (a) and 3 (b):
N1 is the pressure that the jut 23a of driver part 23 produces the breach bottom surface 24c of ratchet 24;
N2 is the pressure between the friction part 26 arranging on the second surface 25c of paper separating rotary shaft 25 and ratchet 24;
F1 is the frictional force of the jut 23a of the driver part breach bottom surface 24c to ratchet 24;
F2 is the second surface 25c of paper separating rotary shaft 25 frictional force to ratchet 24 inner side friction parts 26;
Fs is the perturbed force of static to ratchet 24;
α is the angle of ratchet breach bottom surface 24c and paper conveyance direction;
β is the angle of F2 and paper conveyance direction;
If μ 1 is the coefficient of friction between the jut 23a of driver part 23 and the breach bottom surface 24c of ratchet 24, μ 2 is the coefficient of friction between second surface 25c and the friction means 26 of paper separating rotary shaft,
There is so following relation,
F1＝N1·μ1(1)
N1·Cosα＝F1·Sinα+F2·Sinβ+Fs(2)
F2·Cosβ＝F1·Cosα+N1·Sinα(3)
Solve above (1), (2), (3) formula, can draw,
From result of calculation, in the time that μ 1, α, β determine, F2 increases along with the increase of Fs. So should corresponding increase F2 in the time that Fs increases.
From F2=N2 μ 2, because properties of materials μ 2 is definite, so can only achieve the goal by increasing N2. The utility model is provided with friction means in the inner side of ratchet for this reason, with this increasing friction force F2, reaches the interference overcoming from electrostatic force Fs, the phenomenon of having avoided original copy not bother to see me out.
The utility model by increasing friction means between ratchet and paper separating rotary shaft, can be attracted to cannot move to the first tooth portion of paper separating rotary shaft on driver part time at ratchet, increase the frictional force between ratchet and paper separating rotary shaft, assist the jut promotion ratchet of driver part to move to the first tooth portion of paper separating rotary shaft, and finally make the second tooth portion of ratchet and the second tooth portion of paper separating rotary shaft engage, complete the reset of ratchet. And then effectively solve ratchet and be adsorbed on driver part and can not reset and cause the indissociable problem of paper, realize separating rotary shaft and continue ceaselessly to rotate.
The second embodiment of the present utility model relates to a kind of paper separator. The second embodiment is the improvement on the first embodiment, and improvements are:
Friction means is made up of multiple friction subassemblies, and friction subassembly is arranged on to the first periphery or the second periphery N equally divided position, thereby reach good concentricity, make the data of the friction torque between friction means and ratchet and paper separating rotary shaft more stable, the stability of the conveyance to the paper after separating does not exert an influence, and then maintenance is printed or duplicating image quality is unaffected.
In the present embodiment, above-mentioned first surface is the first periphery, and second surface 25c is the second periphery, and the first periphery and the second periphery are coaxial; Friction means comprises N friction subassembly, and friction subassembly is arranged to lay respectively at the N equally divided position on the circumference of the second periphery, and wherein, N is more than or equal to 2 positive integer. Or above-mentioned first surface is the first periphery, second surface is the second periphery, and the first periphery and the second periphery are coaxial; Friction means comprises N friction subassembly, and friction subassembly is arranged to lay respectively at the N equally divided position on the circumference of the first periphery, and wherein, N is more than or equal to 2 positive integer.
Below with reference to Fig. 4 (a) and (b) explanation present embodiment in friction means arrange an example. Fig. 4 (a) is the sectional view of the paper separator shown in Fig. 1 along face A-A, and Fig. 4 (b) is the upward view of ratchet 24. Particularly, in this example, N equals 3, and friction means 26 comprises 3 friction subassemblies, and three friction subassemblies are separately positioned on the third-class office on the circumference of the first periphery.
The friction subassembly that is appreciated that this can be elastic arm, can be also other friction means parts.
The 3rd embodiment of the present utility model relates to a kind of image processing system. Fig. 5 is the structural representation of the paper feeding device of this image processing system. Fig. 6 is the paper separator that comprises in the paper feeding device of this image processing system and the structural representation of paper pick device.
As shown in Figure 5 and Figure 6, the paper feeding device in this image processing system comprises the paper separator in above-mentioned embodiment. Specifically, as shown in Figure 5, paper feeding device comprises:
Place the document board 1 of original copy.
Paper pick-up roller 2 is clamped original copy so that paper feeding together with friction plate 4, and paper pick-up roller 2 has the paper that drives paper pick-up roller 2 to rotate and picks up rotating shaft 21, and paper picks up rotating shaft 21 and is provided with the 3rd 21a of tooth portion, is subject to the transmission of the gear on power transmission shaft 22 and turns round;
Power transmission shaft 22, is provided with the 4th 22a of tooth portion, and the power of driver part 23 reaches paper via the gear on the raised ring 23b on driver part with the engaging rotation of the 4th 22a of tooth portion and picks up rotating shaft 21.
Support frame 3, for supporting paper pick-up roller 2, paper separate roller 6 and removing electric cloth 5, has installed paper and has picked up rotating shaft 21, power transmission shaft 22, driver part (being driving shaft) 23 and paper separating rotary shaft 25 herein on it.
Paper separator described in above-mentioned embodiment, comprise paper separate roller 6 and separate sheet 7, utilize the difference of the frictional force size between original copy and separate roller 6, original copy and separate sheet 7, separate roller will heavily be delivered to this original copy, realizes original copy and separates one by one conveyance. Wherein, driver part 23 comprises the raised ring 23b that is provided with tooth portion, and power transmission shaft 22 is turned round, and one end is provided with jut 23a, with the breach bottom surface 24c of ratchet 24 and contacting of side 24d, drives ratchet 24 rotate and make ratchet 24 slide to paper separating rotary shaft. Ratchet 24 is provided with two breach, has bottom surface 24c and sidewall 24d on breach. In addition, the gap location of ratchet 24 between raised ring 23b and the paper separating rotary shaft 25 of driving shaft 23 moves back and forth, when the first 25a of tooth portion regular and paper separating rotary shaft 25 and engage, time and depart from.
Paper carrying roller 8,9 and 12, makes the dirty conveyance of original copy to original copy conveyance path A.
White reference plate 10, is arranged between carrying roller 9 and 12, the top of read sensor 11, and the white reference plate as conveyance to the detection of the white data of the read sensor 11 of the image reading on this original copy, and make original copy and the compact laminating of read sensor.
Read sensor 11, is arranged on the below of datum plate, reads the image on original copy.
ADF dish 13, accept by paper carrying roller 12 conveyances of the downstream side setting of original copy conveyance path A to original copy.
The paper feeding process of whole paper feeding device is as follows:
Be placed on the original copy on document board, through pick-up roller 2, conveyance is to the contact site of paper separate roller 6 and separate sheet 7, and the top through 8,9 conveyances of paper carrying roller to read sensor, then reads the image on original copy by read sensor. After original image reads and is over, then discharge via paper carrying roller 12. Wherein, the speed of paper carrying roller 8 and 9 conveyance original copys is greater than the transmission speed of the isolated original copy of paper separate roller, therefore, in the time of paper carrying roller 8 and 9 conveyance paper separate roller 6 isolated original copy, can pull paper separate roller 6 with larger speed, cause the speed of separate roller 6 to be greater than the actuating speed of driver part 23. Now, the velocity of rotation of ratchet 24 is greater than the actuating speed of driver part 23, and as shown in Figure 6, the second 24a of tooth portion separates with the first 25a of tooth portion of paper separating rotary shaft 25.
Along with being rotated further of driver part 23, under the effect of friction means 26, ratchet 24 now can't be because of the suction-operated increasing along with the synchronized in the same way rotation of driver part, but the first 25a of tooth portion to separating rotary shaft 25 moves under the impetus of protuberance 23b, recover the engagement of the first 25a of tooth portion of the second 24a of tooth portion and separating rotary shaft 25, thereby drive separate roller 6 to rotate, ready for separating the original copy arriving below.
In addition, be appreciated that paper separator in the utility model can be in the composite machine of scanner, duplicator, facsimile machine, printer and above-mentioned machine, also can for shredder etc., other need in the equipment of separation papers.
It should be noted that, in the claim and description of this patent, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially. And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment. The in the situation that of more restrictions not, the key element that " comprises " and limit by statement, and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Although by reference some preferred embodiment of the present utility model, the utility model is illustrated and described, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and do not depart from spirit and scope of the present utility model.
Claims (11)
1. a paper separator, is characterized in that, comprising:
Paper separate roller, has the paper separating rotary shaft that drives described paper separate roller to rotate, and on described paper separating rotary shaft, is provided with firstTooth portion;
Ratchet cylindraceous, described ratchet is enclosed on described paper separating rotary shaft, on described ratchet, be provided with can with the first toothThe second tooth portion of portion's engagement, described ratchet has the axially movable free degree along described paper separating rotary shaft, makes described firstTooth portion and described the second tooth portion can be in state disconnected from each other and the states that intermeshes;
Driver part, coaxially arranges with described paper separating rotary shaft, and under the described state that intermeshes, described driver part makes instituteState ratchet and paper separating rotary shaft rotates simultaneously;
Between the described paper separating rotary shaft surface relative with ratchet, be provided with friction means, and under described state disconnected from each other,Frictional force between described paper separating rotary shaft and the ratchet producing due to described friction means be enough to resist described ratchet only withWhen described driver part, rotate.
2. paper separator as claimed in claim 1, is characterized in that, on described driver part, has along radially outwardThe jut of projection;
The breach on the axial plane of described ratchet with setting corresponding to described jut, the bottom surface of described breach becomes with sagittal planeOne angle; Along the direction of described rotation, the distance of the downstream of described bottom surface and described the second tooth portion is greater than described bottom surfaceThe distance of upstream side and described the second tooth portion;
Under the described state that intermeshes, when driver part rotate and described jut and described breach along described rotation directionThe sidewall butt in downstream time, described driver part promotes described ratchet and rotates together with described paper separating rotary shaft.
3. paper separator as claimed in claim 2, is characterized in that, described driver part 23 has radially projectionRaised ring, and described jut is arranged on described raised ring;
Described raised ring is coaxial with described ratchet and paper separating rotary shaft, and described ratchet be positioned at vertically described raised ring and described inBetween the first tooth portion of paper separating rotary shaft, the distance between described raised ring and described the first tooth portion is greater than described ratchet verticallyBreadth Maximum.
4. paper separator as claimed any one in claims 1 to 3, is characterized in that, described relative surface is instituteState the first surface of ratchet and the second surface of described paper separating rotary shaft, described friction means is arranged at described paper separating rotary shaftRadially on the second surface relative with the first surface of described ratchet.
5. paper separator as claimed any one in claims 1 to 3, is characterized in that, described relative surface is instituteState the first surface of ratchet and the second surface of described paper separating rotary shaft, described friction means be arranged at described ratchet along describedRadially on the first surface relative with the second surface of described paper separating rotary shaft.
6. paper separator as claimed in claim 5, is characterized in that, described friction means and described ratchet are integrally formed.
7. paper separator as claimed in claim 4, is characterized in that, described first surface is the first periphery, described inSecond surface is the second periphery, and described the first periphery and the second periphery are coaxial;
Described friction means comprises N friction subassembly, and described friction subassembly is arranged to lay respectively at described the second peripheryCircumference on N equally divided position, wherein, N is more than or equal to 2 positive integer.
8. paper separator as claimed in claim 5, is characterized in that, described first surface is the first periphery, described inSecond surface is the second periphery, and described the first periphery and the second periphery are coaxial;
Described friction means comprises N friction subassembly, and described friction subassembly is arranged to lay respectively at described the first peripheryCircumference on N equally divided position, wherein, N is more than or equal to 2 positive integer.
9. paper separator as claimed in claim 7 or 8, is characterized in that, N equals 3.
10. paper separator as claimed any one in claims 1 to 3, is characterized in that described friction means, sour jujubeWheel 24 and paper separating rotary shaft are made up of identical material.
11. 1 kinds of image processing systems, is characterized in that, comprising:
Paper separator as described in any one in claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771213.4U CN205257551U (en) | 2015-09-30 | 2015-09-30 | Paper separator and image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771213.4U CN205257551U (en) | 2015-09-30 | 2015-09-30 | Paper separator and image forming device |
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| Publication Number | Publication Date |
|---|---|
| CN205257551U true CN205257551U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520771213.4U Expired - Fee Related CN205257551U (en) | 2015-09-30 | 2015-09-30 | Paper separator and image forming device |
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| CN (1) | CN205257551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110140516A (en) * | 2019-07-02 | 2019-08-20 | 武汉轻工大学 | A kind of rotating mechanism and pineapple picking machine |
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2015
- 2015-09-30 CN CN201520771213.4U patent/CN205257551U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110140516A (en) * | 2019-07-02 | 2019-08-20 | 武汉轻工大学 | A kind of rotating mechanism and pineapple picking machine |
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