CN1299958C - Paper separating device for automatic paper feeder - Google Patents
Paper separating device for automatic paper feeder Download PDFInfo
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- CN1299958C CN1299958C CNB031292216A CN03129221A CN1299958C CN 1299958 C CN1299958 C CN 1299958C CN B031292216 A CNB031292216 A CN B031292216A CN 03129221 A CN03129221 A CN 03129221A CN 1299958 C CN1299958 C CN 1299958C
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- paper
- friction wheel
- separating device
- conveying apparatus
- primary shaft
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Abstract
The present invention relates to a paper-separating device for an automatic paper feeder, which can stably separate the outermost piece of paper in a wad of paper from the wad of paper to feed the outermost piece of paper. The paper-separating device comprises a paper-separating roller, a frictional wheel, a first shaft and a force applying mechanism, wherein the paper-separating roller is driven by a driving device to rotate. The frictional wheel has a first rotating state, an idle state and a second rotating state, wherein in the first rotating state, the frictional wheel is driven by the paper-separating roller to rotate; in the idle state, the paper-separating roller feeds the first piece of paper; and in the second rotating state, the frictional wheel is driven by the second piece of paper fed by the paper-separating roller. The first shaft penetrates through the frictional wheel for providing a damping torque to prevent the frictional wheel from rotating. The force applying mechanism is used for pushing the paper-separating roller and the frictional wheel to lean together.
Description
Technical field
The present invention relates to a kind of paper separating device of automatic paper conveying apparatus, relate in particular to a kind of paper separating device that uses two friction wheels to carry out separation and paper feed.
Background technology
Automatic paper conveying apparatus can use in image I/O equipments such as scanner, multifunctional paper feeding machine, duplicator even chopping machine.For paper will be presented one by one, must be provided with paper separating device in the automatic paper conveying apparatus, just so can avoid plurality of sheets of paper to open the maloperation that is fed simultaneously.
Fig. 1 shows a kind of schematic side view of paper separating device of known automatic paper conveying apparatus.The front-view schematic diagram of the paper separating device of the automatic paper conveying apparatus of Fig. 2 displayed map 1.Shown in Fig. 1 and 2, the ideal design of known paper separating device is in order to present plural paper 120 one by one.Paper separating device mainly comprises a friction wheel (also being called the autoamtic paper feeding roller, the ADF roller) 110, and can be around a friction pad 112 of axle 114 rotations.When paper 120 was not fed as yet, friction pad 112 continued to contact and worn away with friction wheel 110.When among Fig. 1 topmost a piece of paper open 120 by between friction pad 112 and the friction wheel 110 time, following paper can be blocked by friction pad 112, and realizes that separation operates.
Yet the paper separating device of above-mentioned known technology has following problem.
1. friction pad 112 and friction wheel 110 directly contacts in the modes of cliding friction, and both wear away easily to cause friction pad 112 and friction wheel 110, and the friction pad 112 that is subjected to the certain degree abrasion causes high separation fault rate easily.
2. because friction pad 112 is moving contact with friction wheel 110 and friction wheel, so friction wheel 110 needs the high pulling torque motor can be provided.
Fig. 3 shows the schematic side view of the paper separating device of another kind of known automatic paper conveying apparatus.Fig. 4 A and 4B be the block diagram and the lateral plan of the friction wheel of displayed map 3 respectively.Shown in Fig. 3,4A and 4B, this paper separating device comprises a comber 200 and a friction wheel 210.Comber 200 is by second 202 driven rotary, and utilizes 210 rotations of frictional force drives friction wheel.When a piece of paper open 230 enter between two friction wheels channel the time, friction wheel 210 does not rotate, make that all the other paper are blocked in outside.At this moment, paper 230 can slide with respect to friction wheel 210, but does not slide with respect to comber 200.Above-mentioned phenomenon is that the particular design by friction wheel 210 causes.Friction wheel 210 is made up of a hollow circuit cylinder 211, a spring 212, a friction lining 213, a connecting element 214 and two C type clasps 215.
Two C type clasps, 215 snappings are fixed on the two ends of a primary shaft 220, in order to spring 212 is provided axial compressive force along primary shaft 220, and then friction force between the friction face 216 of friction lining 213 and connecting element 214 is provided, in order to stop the rotation of the hollow circuit cylinder 211 that interfixes with connecting element 214.
In above-mentioned known technology, because the part of the ejection that part constituted between the two C type clasps 215 is comparatively difficult on making, and part is also more, causes assembling to be difficult for, and makes that making assembly cost can't be reduced effectively.In addition, the primary shaft 220 that C type clasp 215 is still needed additionally to friction wheel 210 applies an axial compressive force, causes the puzzlement in the design.
Therefore, how to provide a kind of paper separating device that can overcome the problems referred to above, real is the problem that the present application people institute desire solves.
Summary of the invention
Therefore, an object of the present invention is to provide and a kind ofly can be reliably open outmost one and open the paper separating device that separates to present with this stacker with being positioned at a stacker.
Another object of the present invention provides a kind of paper separating device that can effectively reduce abrasion, in order to save the power output of the automatic paper conveying apparatus that uses this paper separating device.
For reaching above-mentioned purpose, the invention provides a kind of paper separating device of automatic paper conveying apparatus, it comprises a comber, a friction wheel, a primary shaft, reaches a force application mechanism.The paper separating device of automatic paper conveying apparatus is presented in order to will comprise one first paper and to separate in regular turn with one second paper of this first paper adjacency.Comber is driven by an actuating device and rotates.Friction wheel has by one first rotary state of this comber driven rotary, by one second rotary state and an actionless quiescence of this second paper driven rotary.Under this quiescence of this friction wheel, this comber is directly presented this first paper, and this friction wheel is pushed this second paper to this first paper, and this first paper is slided on this second paper.This primary shaft is arranged in this friction wheel, in order to provide a damping moment of torsion to stop this friction wheel from rotation.Force application mechanism is in order to be pushed against this comber with this friction wheel.
By above-mentioned structure, can reduce the abrasion of comber and friction wheel, and can reduce because the loss of machine of torque that abrasion are caused.And, can effectively stop plurality of sheets of paper and open the maloperation of being presented simultaneously by the two states of friction wheel.
Description of drawings
Fig. 1 shows a kind of schematic side view of paper separating device of known automatic paper conveying apparatus.
The front-view schematic diagram of the paper separating device of the automatic paper conveying apparatus of Fig. 2 displayed map 1.
Fig. 3 shows the schematic side view of the paper separating device of another kind of known automatic paper conveying apparatus.
The block diagram of the friction wheel of Fig. 4 A displayed map 3.
The lateral plan of the friction wheel of Fig. 4 B displayed map 3.
Fig. 5 shows the schematic side view according to the paper separating device of the automatic paper conveying apparatus of first embodiment of the invention.
The front-view schematic diagram of the paper separating device of the automatic paper conveying apparatus of Fig. 6 displayed map 5.
The paper separating device of Fig. 7 displayed map 5 is presented the partial enlarged drawing that two pieces of paper are opened.
The paper separating device of Fig. 8 displayed map 5 is presented the partial enlarged drawing that a piece of paper is opened.
Fig. 9 shows the schematic side view according to the paper separating device of the automatic paper conveying apparatus of second embodiment of the invention.
The front-view schematic diagram of the paper separating device of the automatic paper conveying apparatus of Figure 10 displayed map 9.
Figure 11 shows the front-view schematic diagram according to the paper separating device of the automatic paper conveying apparatus of third embodiment of the invention.
Figure 12 shows the front-view schematic diagram according to the paper separating device of the automatic paper conveying apparatus of fourth embodiment of the invention.
Figure 13 shows the cutaway view of friction wheel of the present invention.
Figure 14 shows the three-dimensional exploded view of friction wheel of the present invention.
Figure 15 shows according to the friction wheel of fifth embodiment of the invention and the block diagram of stop mechanism.
Figure 16 shows the three-dimensional exploded view of Figure 15.
[nomenclature]
1 comber
2 friction wheels
3 primary shafies
4 second
5 motors
6A first paper
6B second paper
7 springs
8 clump weights
9 magnet
10 first magnet
11 second magnet
21 outer cylindrical body
22 inner cylinders
23 first cylinders
24 second cylinders
25 elongated slots
27 first holes
28 second holes
29 elastic partss
31 grooves
32 keys
50 stop mechanisms
51 elastic shaft sleeves
52 bearings
53 holes
54 breach
110 friction wheels
112 friction pads
114
120 paper
200 combers
202 second
210 friction wheels
211 hollow circuit cylinders
212 springs
213 friction linings
214 connecting elements
215C type clasp
216 friction faces
220 primary shafies
230 paper
The specific embodiment
The paper separating device of automatic paper conveying apparatus of the present invention can be applied in the image I/O equipments such as scanner, multifunctional paper feeding machine, duplicator even chopping machine.
Fig. 5 shows the schematic side view according to the paper separating device of the automatic paper conveying apparatus of the first embodiment of the present invention.The front-view schematic diagram of the paper separating device of the automatic paper conveying apparatus of Fig. 6 displayed map 5.Shown in Fig. 5 and 6, the paper separating device of the automatic paper conveying apparatus of present embodiment comprises a comber 1, a friction wheel 2, a primary shaft 3, reaches a spring (force application mechanism) 7.The axle of primary shaft 3 for not rotating.Comber 1 is fixed to and is subjected to for example direct or indirect driven in rotation of actuating device of a motor 5 for second 4, the second 4.The paper separating device of present embodiment can be in order to carry out separation with plural paper and to present.For the purpose of simplifying the description, the present invention utilizes to present one first paper 6A and one second paper 6B replacement and present a stacker and open and explain.Except presenting individual paper, no matter number of paper why, and action at last is bound to proceed to the state that two pieces of paper are opened.
In the time of between paper 6A or 6B are not fed by comber 1 and friction wheel 2 as yet, friction wheel 2 is in first rotary state.Comber 1 contacts with friction wheel 2, and drives friction wheel 2 rotations.At this moment, be in the friction of rolling state between comber 1 and the friction wheel 2, so do not have the situation of abrasion.
In the time of between the first paper 6A is fed by comber 1 and friction wheel 2, the second paper 6B can be fed between the first paper 6A and this friction wheel 2, as shown in Figure 7.In the present embodiment, friction coefficient between the comber 1 and the first paper 6A is greater than the friction coefficient of the first paper 6A and the second paper 6B, and the damping moment of torsion that the second paper 6B is caused friction wheel 2 in order to stop friction wheel 2 rotations less than primary shaft 3 drive torque that friction wheel 2 caused.So comber 1 directly drives the first paper 6A and advances, and the second paper 6B and friction wheel 2 maintain static, and make slide relative between the first paper 6A and the second paper 6B.
At this moment, be in the friction of rolling state between the comber 1 and the first paper 6A, and the friction wheel 2 and the second paper 6B do not have relative motion, the former capital does not have the situation of abrasion.
Present embodiment is to adopt two springs 7 that primary shaft 3 is up pushed up, with between comber 1 and the paper, between paper and the friction wheel 2 and provide a positive force between primary shaft 3 and the friction wheel 2.
For friction wheel 2 can be rotated when contacting with comber 1, the driving torque that friction coefficient caused between friction wheel 2 and the comber 1 must be greater than the damping moment of torsion between friction wheel 2 and the primary shaft 3.
The first paper 6A be fed finish after, comber 1 is directly presented the second paper 6B with friction wheel 2, as shown in Figure 8.At this moment, comber 1 utilizes the friction force between itself and the second paper 6B to drive the second paper 6B to advance, and the second paper 6B utilizes the friction force between itself and the friction wheel 2 to drive friction wheel 2 rotations.The drive torque that the second paper 6B is caused for friction wheel 2 must be designed to the damping moment of torsion that is caused for friction wheel 2 greater than primary shaft 3.Under this situation, do not have slide relative between comber 1 and the paper, and also do not have slide relative between friction wheel 2 and the paper, so the abrasion of the wheel of can reducing friction.
Fig. 9 shows the schematic side view according to the paper separating device of the automatic paper conveying apparatus of the second embodiment of the present invention.The front-view schematic diagram of the paper separating device of the automatic paper conveying apparatus of Figure 10 displayed map 9.Shown in Fig. 9 and 10, the friction wheel 2 of present embodiment is positioned at the top of comber 1, and the paper 6A of below at first is subjected to separation and presents.Except following illustrated part, second embodiment and first embodiment are similar.First embodiment has the elastic body that utilizes elastic force that this comber 1 is pushed against with friction wheel 2, and second embodiment has the gravity mechanism that utilizes gravity that this comber 1 is pushed against with friction wheel 2.This gravity mechanism comprises two clump weights 8 that are fixed on the primary shaft 3.In other embodiments, the number of clump weight 8 can be one, and clump weight 8 can also be fixed to friction wheel 2.Perhaps, utilize the gravity of friction wheel 2 and primary shaft 3 itself, can also reach above-mentioned gravity mechanism.
Figure 11 shows the front-view schematic diagram according to the paper separating device of the automatic paper conveying apparatus of the third embodiment of the present invention.The present embodiment and first embodiment are similar, and difference is that present embodiment uses the magnetic force of a magnetic force mechanism that this comber 1 is pushed against with friction wheel 2.This magnetic force mechanism comprises two magnet 9, and this primary shaft 3 is to be made by magnetic material, pushes this friction wheel 2 to this comber 1 in order to the attraction that is subjected to magnet 9.
Figure 12 shows the front-view schematic diagram according to the paper separating device of the automatic paper conveying apparatus of the fourth embodiment of the present invention.Present embodiment and the 3rd embodiment are similar, difference is that the magnetic force mechanism of present embodiment comprises fixed one first magnet 10 and is installed up to one second magnet 11 on this primary shaft 3, and this first magnet 10 repels these second magnet 11 and pushes this friction wheel 2 to this comber 1.Those skilled in the art should recognize easily, can also use other configuration, so that this first magnet 10 attracts this second magnet 11 and pushes this friction wheel 2 to this comber 1.
Figure 13 shows the cutaway view of friction wheel of the present invention.Figure 14 shows the three-dimensional exploded view of friction wheel of the present invention.Shown in Figure 13 and 14, this friction wheel 2 comprises an outer cylindrical body 21 and an inner cylinder 22.The outside face of outer cylindrical body 21 drapes over one's shoulders attached one deck elastomeric material usually, and is formed with one first hole 27, and inner cylinder 22 is formed with one second hole 28 and these primary shaft 3 fits, and this inner cylinder 22 is arranged in this first hole 27 of this outer cylindrical body 21.Inner cylinder 22 can be geometric configuratioies such as circle or quadrangle with the cross sectional shape in this first hole 27, gets final product so long as can work in coordination.This inner cylinder 22 comprises one first cylinder 23 and one second cylinder 24.Second cylinder 24 is connected with this first cylinder 23, and this inner cylinder 22 sees through this first cylinder 23 and is fixed to this outer cylindrical body 21.For example, the key 32 of outer cylindrical body 21 can be fixed together with groove 31 fits of first cylinder 23.
This inner cylinder 22 is formed with the elongated slot 25 that extends along a primary shaft 3, and this elongated slot 25 is communicated with second hole 28.Friction wheel 2 more comprises an elastic parts (can be coil spring or resilient ring) 29, and this inner cylinder 22 shortens into this primary shaft 3 in these elastic parts 29 fits and contacts, in order to produce this damping moment of torsion.
In other embodiments, can also utilize the strength that expands outwardly of the primary shaft 3 of hollow to produce this damping moment of torsion.In this embodiment, the primary shaft of hollow is formed with a joint-cutting, and primary shaft can be compressed and dwindle its external diameter, then primary shaft is inserted in the hole of friction wheel, by the strength that expands outwardly of primary shaft, can be friction wheel this moment of torsion is provided.
Figure 15 shows according to the friction wheel of the fifth embodiment of the present invention and the block diagram of stop mechanism.Figure 16 shows the three-dimensional exploded view of Figure 15.Shown in Figure 15 and 16, the paper separating device of present embodiment more comprises a stop mechanism 50.This stop mechanism 50 comprises a bearing 52 and two elastic shaft sleeves 51, the breach 54 that this bearing 52 is formed with two holes 53 and is communicated with these holes 53.These elastic shaft sleeve 51 usefulness think that this primary shaft 3 that is sheathed on wherein provides this damping moment of torsion, friction wheel 2 is provided the effect of braking, in order to realize above-mentioned separation action.
Therefore, primary shaft 3 of the present invention is arranged in this friction wheel 2, and in order to provide a damping moment of torsion to stop this friction wheel 2 rotations, wherein primary shaft 3 can maintain static maybe and can relatively rotate with friction wheel 2.
By above-mentioned embodiment, the present invention can have following advantage.
1. because between comber 1 and the paper and all do not have slide relative between friction wheel 2 and the paper, thus the abrasion of comber 1 and friction wheel 2 can be reduced, the loss of machine of torque of minimizing system, and can promote scanning speed.
2. utilize the blocking effect of 2 pairs of paper of friction wheel, the degree of stability of separation can be provided.
3. utilize the dumping force that is caused between friction wheel 2 and the primary shaft 3 to stop the rotation of friction wheel 2, can effectively reduce design parameters, and comparatively stable service condition is provided.
4. utilize the dumping force that is caused between primary shaft 3 and the bearing 52 to stop the rotation of friction wheel, so in design, can dwindle the size of this friction wheel, and then reach the effect of saving configuration space this friction wheel.
The specific embodiment that is proposed in the detailed description of preferred embodiment is only in order to convenient explanation technology contents of the present invention, but not with narrow sense of the present invention be limited to the foregoing description, in the situation that does not exceed spirit of the present invention and following claim, the many variations of being done is implemented, and all belongs to scope of the present invention.
Claims (20)
1. the paper separating device of an automatic paper conveying apparatus is presented in order to will comprise one first paper and to separate in regular turn with one second paper of this first paper adjacency, and the paper separating device of this automatic paper conveying apparatus comprises:
One comber is driven by an actuating device and rotates;
One friction wheel has one first rotary state by this comber driven rotary, by one second rotary state of this second paper driven rotary, wherein friction wheel is pushed this second paper to this first paper; And an actionless quiescence, wherein, this friction wheel remains static, and this comber is directly presented this first paper, and this first paper is slided on this second paper;
One primary shaft is arranged in this friction wheel, in order to provide a damping moment of torsion to stop this friction wheel from rotation; And
One force application mechanism is in order to be pushed against this comber with this friction wheel.
2. the paper separating device of automatic paper conveying apparatus as claimed in claim 1, wherein this friction wheel alternative is mounted to this primary shaft rotationally, and this primary shaft provides this damping moment of torsion that stops this friction wheel from rotation by a dumping force of itself and this friction wheel.
3. the paper separating device of automatic paper conveying apparatus as claimed in claim 1, wherein this force application mechanism is an elastic body that utilizes an elastic force that this primary shaft is pushed against with this friction wheel.
4. the paper separating device of automatic paper conveying apparatus as claimed in claim 3, wherein this elastic body comprises a spring.
5. the paper separating device of automatic paper conveying apparatus as claimed in claim 1, wherein this force application mechanism is a gravity mechanism that utilizes a gravity that this primary shaft is pushed against with this friction wheel.
6. the paper separating device of automatic paper conveying apparatus as claimed in claim 5, wherein this gravity mechanism comprises a clump weight that is fixed to this primary shaft.
7. the paper separating device of automatic paper conveying apparatus as claimed in claim 5, wherein this gravity mechanism comprises a clump weight that is fixed to this friction wheel.
8. the paper separating device of automatic paper conveying apparatus as claimed in claim 1, wherein this force application mechanism is a magnetic force mechanism that utilizes a magnetic force that this primary shaft is pushed against with this friction wheel.
9. the paper separating device of automatic paper conveying apparatus as claimed in claim 8, wherein this magnetic force mechanism comprises a magnet, and this primary shaft made by magnetic material, pushes this friction wheel to this comber in order to the attraction that is subjected to this magnet.
10. the paper separating device of automatic paper conveying apparatus as claimed in claim 8, this magnetic force mechanism one second magnet of comprising one first fixing magnet and being installed up to this primary shaft wherein, this second magnet of this first attraction and push this friction wheel to this comber.
11. the paper separating device of automatic paper conveying apparatus as claimed in claim 8, this magnetic force mechanism one second magnet of comprising one first fixing magnet and being installed up to this primary shaft wherein, this first magnet repels this second magnet and pushes this friction wheel to this comber.
12. the paper separating device of automatic paper conveying apparatus as claimed in claim 2, wherein this friction wheel comprises:
One outer cylindrical body is formed with one first hole;
One inner cylinder is formed with one second hole and comes and this primary shaft fit, and this inner cylinder is arranged in this first hole of this outer cylindrical body.
13. the paper separating device of automatic paper conveying apparatus as claimed in claim 12, wherein this inner cylinder comprises:
One first cylinder;
One second cylinder is connected with this first cylinder, and this inner cylinder sees through this first cylinder and is fixed to this outer cylindrical body.
14. the paper separating device of automatic paper conveying apparatus as claimed in claim 12, wherein this inner cylinder is formed with the elongated slot that extends along a primary shaft, and this friction wheel more comprises an elastic parts, and this inner cylinder shortens into this primary shaft in this elastic parts fit and contacts, in order to produce this damping moment of torsion.
15. the paper separating device of automatic paper conveying apparatus as claimed in claim 14, wherein this elastic parts is a coil spring.
16. the paper separating device of automatic paper conveying apparatus as claimed in claim 14, wherein this elastic parts is a resilient ring.
17. the paper separating device of automatic paper conveying apparatus as claimed in claim 1, wherein this dumping force is a friction force.
18. the paper separating device of automatic paper conveying apparatus as claimed in claim 1, wherein this dumping force is a reluctance force.
19. the paper separating device of automatic paper conveying apparatus as claimed in claim 1, more comprise a stop mechanism, its alternative is mounted to this primary shaft rotationally, this stop mechanism provides this damping moment of torsion that stops this friction wheel from rotation by the dumping force between itself and the primary shaft, and wherein this friction train is fixed to this primary shaft.
20. the paper separating device of automatic paper conveying apparatus as claimed in claim 19, wherein this stop mechanism comprises:
One bearing, the breach that is formed with two holes and is communicated with these holes; And
Two elastic shaft sleeves are with thinking that this primary shaft that is sheathed on wherein provides this damping moment of torsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031292216A CN1299958C (en) | 2003-06-12 | 2003-06-12 | Paper separating device for automatic paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031292216A CN1299958C (en) | 2003-06-12 | 2003-06-12 | Paper separating device for automatic paper feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1565954A CN1565954A (en) | 2005-01-19 |
| CN1299958C true CN1299958C (en) | 2007-02-14 |
Family
ID=34469248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031292216A Expired - Lifetime CN1299958C (en) | 2003-06-12 | 2003-06-12 | Paper separating device for automatic paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1299958C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190165B (en) * | 2010-03-01 | 2013-09-04 | 致伸科技股份有限公司 | Friction wheel and friction wheel module using same |
| CN105668274B (en) * | 2014-10-14 | 2020-05-26 | 虹光精密工业股份有限公司 | Paper separating device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002128304A (en) * | 2000-10-20 | 2002-05-09 | Nec Eng Ltd | Paper feeder |
| US20020096819A1 (en) * | 2000-11-08 | 2002-07-25 | Eiji Fukasawa | Sheet feeding apparatus and automatic document using the same |
-
2003
- 2003-06-12 CN CNB031292216A patent/CN1299958C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002128304A (en) * | 2000-10-20 | 2002-05-09 | Nec Eng Ltd | Paper feeder |
| US20020096819A1 (en) * | 2000-11-08 | 2002-07-25 | Eiji Fukasawa | Sheet feeding apparatus and automatic document using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1565954A (en) | 2005-01-19 |
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