CN102126626A

CN102126626A - Automatic paper feeding device

Info

Publication number: CN102126626A
Application number: CN2010100029641A
Authority: CN
Inventors: 徐维燻; 黄文安
Original assignee: Primax Electronics Ltd
Current assignee: Primax Electronics Ltd
Priority date: 2010-01-15
Filing date: 2010-01-15
Publication date: 2011-07-20
Anticipated expiration: 2030-01-15
Also published as: CN102126626B

Abstract

The invention provides an automatic paper feeding device. The device comprises a paper taking module and a floating vibration absorption structure arranged on a paper inlet. The paper taking module is provided with a paper taking roller, and a paper separation roller. When the paper taking module is rotated to the paper taking position, the paper taking roller is contacted with the floating vibration absorption structure to ensure that paper is fed into the automatic paper feeding device. By arranging the floating vibration absorption structure, the impact force on the paper inlet and noise produced when the paper taking roller takes paper are reduced.

Description

Automatic paper feeder

Technical field

The present invention relates to a kind of automatic paper feeder, particularly reduce and get the vibrations that produce when the paper arm is got paper and the automatic paper feeder of noise.

Background technology

Multifunctional paper feeding machine and scanner all are common now office equipments, for many continuous paper-feedings improving scanning speed, and the multifunctional paper feeding machine of configuration automatic paper feeder and the appearance of scanner are arranged.Yet along with the lifting of scanning speed, get the speed of paper and also and then accelerate, in getting the process of paper, will produce bigger vibrations and noise, even influence the service life of machine.

Fig. 1 is a kind of existing automatic paper feeder, and is disclosed by U.S. Patent number US6792241 patent.The automatic paper feeder 1 of Fig. 1 comprises gets 11, one fens paper washers 12 of paper arm 10, one pickup rollers and a comber 13.

Paper carrier get paper arm 10 in order to paper S is fed to device inside, and get the paper position because of the difference of getting the paper state is positioned at a ready position or.Please consult Fig. 1 again, it is to get the scheme drawing that paper arm 10 is positioned at ready position.

See also Fig. 2, it is to get paper arm 10 to be positioned at the scheme drawing of getting the paper position.When scanning operation starts, get paper arm 10 and be rotated down to getting the paper position, so separating one by one, the paper S that pickup roller 11 is able to be positioned at paper feeding port C is fed to paper-feeding channel D, then separate the inside that is fed to paper carrier one by one by comber 13.

Aforesaid automatic paper feeder exists following problem: as previously mentioned, get paper when action when automatic paper feeder, get the paper arm and moved to by ready position and get the paper position.Yet, get the chart speed degree in order to promote, the office equipments that is provided with automatic paper feeder will improve to be got the paper arm and rotates to the speed of getting the paper position by ready position, and the dynamics of getting paper arm bump paper feeding port this moment also can and then strengthen, and therefore can cause bigger vibrations and noise.If this situation does not add improvement, even may reduce the service life of getting the paper arm.

Summary of the invention

Main purpose of the present invention is to provide a kind of automatic paper feeder, and its paper feeding port has a unsteady shock sucking structure, and the situation that produces excessive shock and noise when preventing to get paper arm bump paper feeding port takes place.

In a preferred embodiment, the invention provides a kind of automatic paper feeder, be used for paper feeding, comprising:

One paper taking module, comprise one be arranged at that rotating shaft and on this automatic paper feeder is articulated in this rotating shaft get the paper arm, wherein this is got the paper arm and comprises a pickup roller and a comber, get the paper arm when this and be positioned at when getting the paper position, this pickup roller will enter the paper feeding of a paper feeding port to this automatic paper feeder; And

One shock sucking structure that floats is arranged at this paper feeding port, when this paper taking module is turned to this when getting the paper position, this pickup roller with should contact by unsteady shock sucking structure, and this paper is admitted in this automatic paper feeder.

In a preferred embodiment, this unsteady shock sucking structure comprises a groove and and is covered in friction lining on this groove.

In a preferred embodiment, this friction lining comprises a fixed area and a float area, wherein this fixed area is attached on this paper feeding port and this float area is covered on this groove, and this fixed area swing relatively when being subjected to the pressing of this pickup roller of this float area.

In a preferred embodiment, automatic paper feeder of the present invention comprises that also one is arranged at the foam in this groove, described foam is positioned at should pickup roller and this friction lining position contacting, the vibrations that produced when contacting with this friction lining in order to the downforce of bearing this pickup roller and this pickup roller.

In a preferred embodiment, this groove has segment space not filled by this foam.

In a preferred embodiment, this comber is sheathed in this rotating shaft, and contacts with one fen scraps of paper, in order to separate paper.

Description of drawings

The section-drawing of Fig. 1 during for the getting the paper arm and be positioned at ready position of existing paper carrier;

Fig. 2 is positioned at section-drawing when getting the paper position for the paper arm of getting of existing paper carrier;

Fig. 3 is the exploded drawings of a preferred embodiment of demonstration automatic paper feeder of the present invention;

Fig. 4 A is that the foam of the unsteady shock sucking structure in the displayed map 3 is arranged at the block diagram in the groove;

Fig. 4 B is that the friction lining of the unsteady shock sucking structure in the displayed map 3 is covered in the block diagram on the groove;

Fig. 5 is positioned at when getting the paper position section-drawing of the A-A hatching of corresponding diagram 3 for getting the paper arm.

Wherein, description of reference numerals is as follows:

1 paper carrier 10 is got the paper arm

12 fens paper washers of 11 pickup rollers

13 comber S paper

C paper feeding port D paper-feeding channel

2 automatic paper feeders, 20 paper taking modules

201 get paper arm 201a pickup roller

The 201b comber 201c divide the scraps of paper

202 rotating shafts, 21 unsteady shock sucking structures

211 grooves, 212 foams

213 friction lining 213a fixed area

213b float area 213c gap

22 paper feeding port

The specific embodiment

Provide a kind of automatic paper feeder according to a specific embodiment of the present invention, can be applicable on multifunctional paper feeding machine or the automatic paper-feeding scanner.

Fig. 3 is the exploded drawings of the automatic paper feeder of demonstration a preferred embodiment of the present invention.Automatic paper feeder 2 includes a paper taking module 20 and a unsteady shock sucking structure 21.Wherein paper taking module 20 is used for the inside with paper feed-in automatic paper feeder 2, comprises getting paper arm 201 and rotating shaft 202, and the shock sucking structure 21 that floats then comprises a groove 211, a foam 212 and a friction lining 213 that is positioned at paper feeding port 22.

Continuation is with reference to Fig. 3, and foam 212 is arranged in the groove 211 (please referring to Fig. 4 A in the lump), and foam 212 do not fill up groove 211, and friction lining 213 then is covered on the groove 211 and (please refers to Fig. 4 B in the lump).Friction lining 213 comprises a fixed area 213a and a float area 213b, wherein has gap 213c between fixed area 213a and the float area 213b, makes float area 213b can swing with respect to fixed area 213a when being subjected to downforce.In addition, get paper arm 201 and comprise a pickup roller 201a and a comber 201b (please refer to Fig. 5), 202 of rotating shafts are passed and are got paper arm 201 and be set on the comber 201b.In the embodiment shown in fig. 3, also comprise one fen scraps of paper 201c, it contacts with comber 201b, in order to separate paper.

The running of embodiment shown in Figure 3 below is described.Please refer to Fig. 5, Fig. 5 is for showing that get paper arm 201 is positioned at section-drawing when getting the paper position.As is known to the person skilled in the art, getting paper arm 201 is positioned at ready position or gets the paper position because of the difference of getting the paper state.When automatic paper feeder 2 is got paper when action, paper carrier provides electric current to make that to rotating shaft 202 getting paper arm 201 is rotated by rotating shaft 202 and drop to and get the paper position, and this moment, pickup roller 201a contacted so that paper is sent in the paper carrier with friction lining 213.

Spaces in the groove 211 are not all filled up by foam 212, and the float area 213b that friction lining 213 is provided is in the space that is subjected to can moving down when pickup roller 201a presses.In detail, when pickup roller 201a bump friction lining 213, the float area 213b of friction lining 213 is moved downward in the groove 211, the noise that has been produced when therefore having slowed down pickup roller 201a to the direct impact of paper feeding port 22 and bump.In addition, the foams 212 that are arranged in the groove 211 are supporting friction lining 213, and the elasticity that provides buffering percussive force to use is more strengthened the effect of absorbing vibration and noise.

As seen from the above embodiment; the present invention utilizes the shock sucking structure that floats to make to get the paper arm to get paper and does the time spent; the contact area of pickup roller and paper feeding port has the space of buffering; that is can directly not clash into paper feeding port; the situation that just can avoid producing excessive shock and noise takes place; more can protect and get the paper arm, to prolong the tenure of use of automatic paper feeder.

Above-described embodiment only is explanation technological thought of the present invention and characteristics, its purpose is to make those skilled in the art can understand content of the present invention and implements according to this, when can not with qualification claim of the present invention, be that every equalization of doing according to spirit disclosed in this invention changes or modification, must covered in the claim of the present invention.

Claims

1. an automatic paper feeder is used for paper feeding, it is characterized in that comprising:

2. automatic paper feeder as claimed in claim 1 is characterized in that this unsteady shock sucking structure comprises a groove and and is covered in friction lining on this groove.

3. automatic paper feeder as claimed in claim 2, it is characterized in that this friction lining comprises a fixed area and a float area, wherein this fixed area is attached on this paper feeding port and this float area is covered on this groove, and this fixed area swing relatively when being subjected to the pressing of this pickup roller of this float area.

4. automatic paper feeder as claimed in claim 3, it is characterized in that also comprising that one is arranged at the foam in this groove, described foam is positioned at should pickup roller and this friction lining position contacting, the vibrations that produced when contacting with this friction lining in order to the downforce of bearing this pickup roller and this pickup roller.

5. automatic paper feeder as claimed in claim 4 is characterized in that this groove has segment space not filled by this foam.

6. automatic paper feeder as claimed in claim 1 is characterized in that this comber is sheathed in this rotating shaft, and contacts with one fen scraps of paper, in order to separate paper.