CN1272182C

CN1272182C - Transmission system for fetching paper

Info

Publication number: CN1272182C
Application number: CN 03101747
Authority: CN
Inventors: 林智坚; 陈英棋; 郑兆凯; 张惠珍
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2003-01-20
Filing date: 2003-01-20
Publication date: 2006-08-30
Anticipated expiration: 2023-01-20
Also published as: CN1519133A

Abstract

The present invention relates to a transmission system for fetching paper, which is applied to a paper fetching device. The present invention mainly comprises a paper fetching roller and a paper dividing cam which are connected, wherein paper are divided by the paper dividing cam. Paper clamped by the paper fetching roller and a friction sheet can be fetched optionally. The paper is then loaded by rotary motion. The transmission system is suitable for paper with different sizes and thickness. The simple structure of the present invention not only greatly reduces production cost, but also prevents the phenomena of multiple paper running and paper clamp. Therefore, the present invention can improve the operation efficiency of the system.

Description

Get the paper transmission system

Technical field

The present invention relates to a kind of transmission system, be applied to paper extraction unit, particularly a kind of transmit paper get the paper transmission system.

Background technology

The running of general industry office mostly is dependent on the contact of the use of paper, particularly letter and various file, the action that need print, xerox or fax.By and large, business machine that industrial circle is common such as duplicator, ink jet type, laser printer (printer), facsimile machine (Fax), scanner (Scanner) etc. all are required paper to be sent into print in the business machine or the input of information.A large amount of unusable paper like this, the quality of its printing and the efficient of operation are the emphasis that the relevant manufacturing industry of business machine is developed always.

The direction of one of them improvement is exactly the conveying action of paper.Each business machine is equiped with different paper-advance units on the market, generally speaking is divided into " L " the type mode of movement and " U " the type mode of movement.At the common device of this measure one, as shown in Figure 1, be first kind of existing paper extraction unit schematic diagram, wherein paper box 300 is in order to store paper 90, frictional force by pickup roller 200 contact paper 90 is rotated motion, this moment, paper 90 carried out translational motion, and block moving of paper 90 by the flange 310 of paper box 300 1 sides, and make paper 90 distortion of arching upward, therefore a side of paper 90 is subjected to the influence ejection paper box 300 of restoring force, and reach the purpose of conveyance of sheets, and this is " U " the buffering conveying-type paper advance mechanism (Snubber type) of type.

Also have the mode of another paper feed, friction-type paper advance mechanism (Friction retard) as shown in Figure 2, is second kind of existing paper extraction unit schematic diagram.As above-mentioned mode, paper 90 is stored in paper box 300, and install a pickup roller 400, and conflict with mobilizable friction plate 500 normalities in the top at paper box 300 edges.Be rotated motion by pickup roller 400 and drive paper 90, and, reach the purpose of conveyance of sheets 90 equally by pickup roller 400 and friction plate 500 clamping paper 90.

Mentioned above is common paper feed mode, however this kind mode for thicker paper, as transparency, envelope etc., because of the rigidity of paper is bigger, the difficult generation phenomenon of deformation that arches upward, and can't carry out the paper feed action, and be easy to generate the situation of paper knuckle.Therefore be only limited to the paper that uses certain size and thickness specification.

Therefore industrial circle develops the method that another kind of paper feed, for example European Union's patent the 816th, No. 107 propositions a kind of " paper-advance unit of printer " (Paper feeding apparatus and printer), utilize the gap of idle pulley (idle roller) control pickup roller, and in order to reach the purpose of conveyance of sheets.Yet this kind mode can't be controlled the required gap of paper effectively.The method that therefore another kind of paper feed is arranged, as United States Patent (USP) the 6th, 146, No. 036 exposure a kind of " printer get paper rotating cam device " (Rotatable cam device for a pickup roller of a printer) utilize a plurality of ratchet interlock pickup roller clamping conveyance of sheets.Though this kind mechanism can reach the purpose of paper feed, yet its structure is very complicated, and not only production cost is high, and maintenance is difficult for.

More than two kinds be " L " type paper feed mode, do not limit the size of paper and the advantage of thickness though have when use, yet above several existing form feeding devices have following shortcoming: heavily send phenomenon (multi-feed), i.e. the paper of gripping plural number in the process of Shu Songing 1..2. misdelivery phenomenon (miss-feed) because of the paper thickness difference, and causes not paper feed situation.3. holding paper phenomenon (paperjam), when promptly paper was because of big or small variable thickness, the paper jam phenomenon that is produced caused the interruption of paper sheet delivery.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art and defective, a kind of paper transmission system of getting be provided, its simple structure, and can be used for the paper of various different sizes, and can prevent from effectively to produce heavily give, the phenomenon of holding paper.

For reaching above-mentioned purpose, the present invention discloses a kind of paper transmission system of getting, and is applied to paper extraction unit, in order to transmit the paper in the paper box, include: a delivery unit, rotatably be installed in this paper extraction unit, include a continuous pickup roller and a separation cam; An and friction plate, be disposed at a side of this delivery unit in the mode of activity, wherein this delivery unit is rotated motion, this separation cam this friction plate of conflicting, thereby produce a predetermined gap, so that the paper of a predetermined number enters this gap, push this friction plate and this paper of clamping by this pickup roller immediately, this paper band is sent in this paper extraction unit from the scope of this paper box.Utilize delivery unit rotatably to be installed in the paper extraction unit, wherein the separation cam by delivery unit stops that the paper in the paper box enters, enter delivery unit and produce the paper of supplying with predetermined number in the space, then push friction plate by pickup roller, and clamp paper and be rotated motion, and paper is delivered in the business machine smooth-goingly, carry out actions such as paper printing or scanning.

The paper transmission system of getting provided by the present invention, its simple structure, and can be applicable to the paper of various different sizes, and prevent from effectively to produce heavily give, the phenomenon of holding paper, production cost is not only significantly lowered in its simple mechanism, and promote operational paradigm effectively, and the different paper type of big or small thickness all can use more flexible facility in the use.

Description of drawings

Fig. 1 is first kind of existing paper extraction unit schematic diagram;

Fig. 2 is second kind of existing paper extraction unit schematic diagram;

Fig. 3 is a kind of schematic diagram of getting the paper transmission system of the present invention;

Fig. 4 to Fig. 8 is a kind of action flow chart of getting the paper transmission system of the present invention.

Symbol description among the figure

10 delivery units

20 pickup rollers

30 separation cams

40 friction plates

41 springs

50 retaining paper cantilevers

60 inverted cams

70 paper boxes

71 lift paper disc

72 springs

80 paper-feeds

90 paper

100 bearing bases

200 pickup rollers

300 paper boxes

310 flanges

400 pickup rollers

500 friction plates

The specific embodiment

Disclosed a kind of paper transmission system of getting according to the present invention as shown in Figure 3, is a kind of schematic diagram of getting the paper transmission system of the present invention.Consist predominantly of a delivery unit 10 and friction plate 40, wherein delivery unit includes continuous pickup roller 20 and separation cam 30, and is installed in the paper extraction unit in rotary manner.Driver module such as motor (not shown) are connected to delivery unit 10 mutually in addition, and provide delivery unit to be rotated the required kinetic energy of motion.Pickup roller 20 has a predetermined distance apart with the end face of friction plate 40, and both end faces are all circular-arcly, in order to paper 90 actions the time, avoids damaging the surface (being detailed later) of paper 90.What need replenish in addition is, in fact the pickup roller 20 and the separation cam 30 that link to each other can be integrated state, draw the situation of separating in the icon, just in order to allow the reader can be well understood to the hereinafter action relationships of delivery unit 10, representing so adopt to separate to draw, is not to be defined as two independently assemblies.

Friction plate 40 is platysomes of a kind of rubber material, be disposed at the downside of delivery unit 10 in the mode of activity, one end of one elastic parts such as spring 41 is fixed in bearing base 100, the other end is connected in friction plate 40, elastic force pushing and pressing friction plate 40 is provided during normality, and is inclined in bearing base 100 with a predetermined angle.Paper box 70 is disposed at a side of bearing base 100, in order to deposit paper 90.Lift paper disc 71 and be platysome, be installed in a side of paper box 70, and have an elastic parts,, be placed in paper box 70 and lift between the paper disc 71, lift paper disc 71 in order to provide elastic force to push against as spring 72.Retaining paper cantilever 50 is in the normal state and stops the state that the paper 90 in the paper box 70 enters, and is hubbed at the bottom side of delivery unit 10.In addition, inverted cam 60 is installed in a side of retaining paper cantilever 50, and selectively is rotated motion and pushing and pressing retaining paper cantilever 50, makes the predetermined angle of retaining paper cantilever 50 rotations one, and this moment, paper 90 became the state that enters delivery unit 10.

Disclosed each assembly of the present invention, its ornaments relevant position and kenel thereof by above obtaining preliminary understanding and understanding, in hereinafter will enumerating implementing procedure, and describe it in detail.Please refer to Fig. 4 to Fig. 8, be a kind of action flow chart of getting the paper transmission system of the present invention.At first please refer to Fig. 4, retaining paper cantilever 50 normalities prop up the state of paper 90, by inverted cam 60 rotations one predetermined angle retaining paper cantilever 50 is moved backward, make paper 90 glide, then gear unit 10 is rotated motion, and interlock separation cam 30 presses down friction plate 40 towards lower swing and conflict.At this moment acting as of separation cam 30 replaces the downslide that retaining paper cantilever 50 is avoided paper 90, has the effect that stops that paper 90 enters; Produce a predetermined gap simultaneously,, make paper 90 can be produced segregation phenomenon, and have the effect of separation, and allow that the paper 90 of the superiors enters with so that the paper of a predetermined number enters this gap.Then as shown in Figure 5, controlling a spring 72 provides the elastic force pushing and pressing to lift the distance that paper disc 71 risings one are scheduled to, make between the paper 90 engaging friction sheets 40 and pickup roller 20 of the superiors, delivery unit 10 persistent movements, the angle that pickup roller 20 rotations one that drive separation cam 30 and link to each other are scheduled to, this moment separation cam 30 no longer with friction plate 40 actions, push compressing friction plate 40 by pickup roller 20, and the paper of clamping simultaneously 90 and take paper box 70 out of.Please refer to Fig. 6, pickup roller 20 continues rotation, and paper 90 is sent to bearing base 100.Can see from Fig. 7, lead the paper matrix piece by what be disposed at bearing base 100 1 sides, as 90 perseverations of paper-feed 80 guiding paper, and in order to avoid producing the phenomenon of paperboard; And control spring 72 compression and make and lift paper disc 71 and descend, paper 90 is sent back within the paper box 70, and delivery unit 10 execution, and involution to normality not with friction plate 40 and paper 90 state of contact.At last as shown in Figure 8, inverted cam 60 rotations one predetermined angle interlock keeps off

paper cantilever

50, and 90 groups on paper is returned in the paper boxes 70, and avoids producing the phenomenon of repetition paper feed.

From the above mentioned, can be well understood to invention spirit of the present invention, be the action relationships of delivery unit 10 and friction plate 40, paper 90 in the paper box 70 is carried out the separation action, and the paper 90 of one predetermined quantity is entered by separation cam 30 control gaps, by pickup roller 20 paper 90 is sent into again.Simple mechanism but is rich in intention, solve the problem of heavily sending with holding paper that has now effectively, therefore not only significantly reduce production costs, and can carry out the separation action exactly, and significantly promote running efficiency, the disclosed technology of the present invention in addition can be used in the paper of the big or small thickness of all kinds of differences, fully satisfies user's demand.

The above only is the present invention's preferred embodiment wherein, is not to be used for limiting practical range of the present invention; Be that all equalizations of doing according to claims of the present patent application change and modification, be all claims of the present invention and contain.

Claims

1. get the paper transmission system for one kind, be applied to paper extraction unit,, it is characterized in that, include in order to transmit the paper in the paper box:

One delivery unit rotatably is installed in this paper extraction unit, includes a continuous pickup roller and a separation cam; And

One friction plate, be disposed at a side of this delivery unit in the mode of activity, wherein this delivery unit is rotated motion, this separation cam this friction plate of conflicting, thereby produce a predetermined gap, so that the paper of a predetermined number enters this gap, push this friction plate and this paper of clamping by this pickup roller immediately, this paper band is sent in this paper extraction unit from the scope of this paper box.

2. the paper transmission system of getting as claimed in claim 1 is characterized in that, the end face of this pickup roller and this friction plate has a predetermined distance apart.

3. the paper transmission system of getting as claimed in claim 1 is characterized in that, more includes a driver module, in order to provide this delivery unit rotation required kinetic energy.

4. the paper transmission system of getting as claimed in claim 1 is characterized in that, this pickup roller and this separation cam are formed in one.

5. the paper transmission system of getting as claimed in claim 1 is characterized in that, more includes an elastic parts, is arranged at the bottom of this friction plate, when this friction plate suffers oppression, and provides a back stretch to push against this friction plate.

6. the paper transmission system of getting as claimed in claim 5 is characterized in that this elastic parts is a spring.

7. the paper transmission system of getting as claimed in claim 1 is characterized in that, more includes a block piece, is hubbed at a side of this delivery unit, enters this delivery unit in order to stop the paper in this paper box.

8. the paper transmission system of getting as claimed in claim 7, it is characterized in that, more include an inverted cam, be installed in a side of this block piece in rotary manner, push against this block piece by rotatablely moving of this inverted cam, the angle that this block piece rotation one is scheduled to.

9. the paper transmission system of getting as claimed in claim 7 is characterized in that, this block piece is a retaining paper cantilever.

10. the paper transmission system of getting as claimed in claim 1 is characterized in that, more includes and leads the paper matrix piece, in order to guiding the paper perseveration that this delivery unit is sent into, and prevents to produce paper jam phenomenon.

11. the paper transmission system of getting as claimed in claim 10 is characterized in that this leads the paper matrix piece is a paper-feed.

12. the paper transmission system of getting as claimed in claim 1 is characterized in that this friction plate is the rubber material.

13. the paper transmission system of getting as claimed in claim 1 is characterized in that, more includes and lifts paper disc, is installed in this paper box in the mode of activity.

14. the paper transmission system of getting as claimed in claim 13, it is characterized in that, more include a flexible member, be disposed at the bottom side that this lifts paper disc, lift paper disc in order to provide an axial elastic force to push against this, and this is lifted the distance that paper disc rising one is scheduled to, make the paper that stores in this paper box send into this delivery unit.

15. the paper transmission system of getting as claimed in claim 14 is characterized in that this flexible member is a spring.