CN1264692C

CN1264692C - Paper separator structure and paper feeding mechanism with the paper separator structure

Info

Publication number: CN1264692C
Application number: CN 02105067
Authority: CN
Inventors: 谢炎松
Original assignee: BenQ Corp
Current assignee: Qisda Corp
Priority date: 2002-02-19
Filing date: 2002-02-19
Publication date: 2006-07-19
Anticipated expiration: 2022-02-19
Also published as: CN1439529A

Abstract

A paper separator structure includes a rotatable body, a friction element and an elastic element. A groove is provided on the rotatable body, and the longitudinal direction of the groove is parallel to the direction of paper feeding. The friction element is provided in the groove, and the friction element contacts the paper. When the paper is fed, the paper applies a first force to the body through the friction element. The elastic element is connected to the body to apply a second force to the body. The angle between the body and the paper is adjusted by using the first and second forces, so as to avoid the motor from losing step and the damage caused by the front edge of the paper after passing through the paper separator.

Description

Paper separating structure and have the paper feed mechanism of this paper separating structure

Technical field

The present invention relates to a kind of paper separating structure, particularly relate to a kind of paper separating structure of adjusting the separation angle.

Background technology

Along with development of science and technology, various electronic and electrical equipments become in the daily life indispensable instrument.For instance, machine commonly used has just comprised computer, printer, facsimile machine, duplicator in office ... or the like.And these can use the business machine of paper for printer, duplicator and facsimile machine, and the operating efficiency of itself can be subjected to the influence of paper feed function.Also therefore, how to produce the device that effectively to carry out functions such as paper feed, separation and just become an important topic.

With present printer is example, can send into smoothly in the printer with the print job that carries out for making paper, all can be provided with automatic paper feeder on the printer, is used for driving paper and advances.Before printing, the user can be about to paper earlier and place the paper-advance unit place, and paper-advance unit can be sent paper one by one during printing, the ink dot of ink gun ejection can be dropped on the paper and imaging.Then, please refer to Figure 1A, the automatic paper feeder below has base plate 101 with bearing paper, and base plate 101 tops then are provided with roller 150, can drive paper and advance.It should be noted that base plate 101 is provided with the rib 102 of layman 103 and several surface smoothings, when roller 150 drove paper, layman 103 can separate paper one by one, but rib 102 then auxiliary paper advance smoothly.

Please refer to Figure 1B, it illustrates the schematic diagram that paper 105 is traditionally advanced along base plate.The base plate 101 of automatic paper feeder is provided with several and a paper direct of travel parallel ribs 102 and a layman 103.Because configuration rib and layman simultaneously on the base plate, and both structures and function are all inequality, so the operative scenario of rib 102 and layman 103 hereinafter will be discussed respectively.With regard to rib 102, its function makes paper therefore in practical application, can select for use the coefficient of friction materials with smaller to make rib 102 smoothly to front slide for erecting paper, makes advancing of paper more smooth and easy; Generally speaking, under the consideration that takes into account cost, can select for use level and smooth plastic cement or sheet metal to make, to save cost.Then please refer to Fig. 1 C, it is the side view of Figure 1B center rib and paper.As shown in the figure, by the drive of roller 150 (not illustrating), paper 105 is advanced along direction A.And can touching the surface of rib 102, the leading edge of paper 105 slides along direction A.

Please refer to Fig. 1 D, it illustrates the direction of advance of paper and suffered friction counter-force figure, paper 105 advances along direction A, because the leading edge of paper 105 and the surface of rib 102 and layman 103 contact, therefore, rib 102 and layman 103 can produce a friction counter-force to paper 105, and the direction of advance A of the direction B of this friction counter-force and paper is opposite, and the counter-force size increases and increases along with paper 105 rigidity.When counter-force increases to motor and can't load, then cause motor step-out phenomenon, also may cause the damage of paper front edge (leading edge).

As everyone knows, the kind and the specification of paper are multifarious, the difference of all kinds of paper on material, and thickness (or the g/m of title paper ²) also have nothing in common with each other, so layman is in when design, shown in Fig. 1 E, the separation angle [alpha] is (for example with the g/m of paper according to the scope of the paper that is suitable for ²The division scope) set, so the separation angle [alpha] is in a single day definite, means that also this layman can only be at the paper in certain particular range, for example at 70g/m ²To 80g/m ²Paper operate, be not to be applicable to all paper.Therefore for conventional practice, the shortcoming of layman is that the separation angle [alpha] is designed at the paper in certain particular range.From another perspective, even layman is done finely, also can only be applicable to the paper in the selected particular range of when design at most,, cause often having plurality of sheets of paper to be sent simultaneously or the situation generation of CD-ROM drive motor step-out so the separation effect is not obvious when practical application.

Summary of the invention

The object of the present invention is to provide a kind ofly can enlarge the paper limited field, improve the stability of separation function and reduce the paper feed machine of paperboard probability.

The object of the present invention is achieved like this, a kind of paper separating structure promptly is provided, a paper feed mechanism that is used for a business machine, this paper feed mechanism can be presented at least one paper, and this layman comprises: a body has a friction surface and contacts with this paper, when presenting this paper, this paper is applied to this body one first active force, and this body comprises that a cantilever is connected in this business machine in rotatable mode, and this flexible member also is connected in this business machine; And a flexible member, an end of this flexible member is connected in this business machine, and its other end is connected in this body, being applied to this body one second active force, can regulate angle between this body and this paper by this first active force and this second active force.The present invention also provides a kind of paper separating structure, a paper feed mechanism that is used for a business machine, this paper feed mechanism can be presented at least one paper, this layman comprises: a body, has a groove, and the longitudinally of this groove is parallel to the direction of this paper feeding, and this body is that a cantilever is connected in this business machine in rotatable mode; One friction element is arranged in this groove, and this friction element contacts with this paper, and when presenting this paper, this paper is applied to this body one first active force via this friction element; And a flexible member, this flexible member one end is connected in this business machine, and its other end is connected in this body, being applied to this body one second active force, can regulate angle between this body and this paper by this first active force and this second active force.

The present invention also provides a kind of paper feed mechanism, is disposed in the business machine, and this paper feed mechanism can be presented at least one paper, and this paper feed mechanism comprises: a base plate; One layman, be disposed at this base plate place, separating this each paper, and at least one rib, be disposed at this base plate place, to support the leading edge of flat this paper, wherein this layman comprises: a body has a friction surface and contacts with this paper, when presenting this paper, this paper is granted this body one first active force, and this body comprises that a cantilever is connected in this business machine in rotatable mode; One flexible member, an end of this flexible member is connected in this business machine, and its other end is connected in this body, being applied to this body one second active force, can regulate angle between this body and this paper by this first active force and this second active force.

Furtherly, paper separating structure of the present invention is based on a suspension system, and this suspension system comprises a cantilever, a flexible member and a separation block rubber.Because paper rigidity difference, so it is also different relatively to the counter-force that layman caused, what of layman strength are this suspension system then be applied to according to paper, make layman produce different separation angles, make the bigger paper of rigidity, it is big that the separation angle becomes, and disperse the counter-force of separation block rubber to paper, make paper skid off layman smoothly, can avoid may taking place and reducing the damage that paper front edge is produced after via layman significantly of motor step-out.

Description of drawings

Figure 1A is the schematic diagram of paper feed mechanism in the Traditional affair machine;

The schematic diagram that Figure 1B advances along rib for paper;

Fig. 1 C is the side view of paper and rib among Figure 1B;

Fig. 1 D is the schematic diagram that paper is advanced along rib;

Fig. 1 E is the side view of paper and rib among Fig. 1 D;

Fig. 2 A is a kind of paper separating structure schematic diagram of a preferred embodiment of the present invention;

Fig. 2 B is the exploded view of layman among Fig. 2 A;

Fig. 2 C is the side view of layman among Fig. 2 A;

Fig. 3 A is the stressed side view of layman of the present invention when being applied to open the separation state than thin paper;

Fig. 3 B is the stressed side view of layman of the present invention when being applied to open the separation state than ground paper;

Fig. 4 is cantilever of another embodiment of the present invention and the layman schematic diagram that flexible member merges.

The specific embodiment

Please refer to Fig. 2 A, Fig. 2 B and Fig. 2 C, it is first preferred embodiment of paper separating structure of the present invention.As shown in the figure, separation block rubber (rubber) 311 in the layman 300 is placed in the groove 310 of cantilever 301, and the coefficient of friction of separation block rubber 311 is greater than the coefficient of friction of other ribs 102, in order to the damping strength that provides paper 105 to advance, certainly, other wear-resisting materials also can be used as the substitute of this separation block rubber 311.Cantilever 301 is to be installed on the fixed axis 312 of business machine base in rotatable mode, and an end of spring 317 is fixed in business machine, the other end and then is connected on the cantilever 301, in order to regulate the anglec of rotation of cantilever 301.The body of layman 300 is a cantilever 301, when making layman 300, can form groove 310 in the central authorities of cantilever 301, is used for putting separation block rubber 311; By suitable design, after separation block rubber 311 is inserted groove 310, can make the end face of the end face of separation block rubber 311 a little more than cantilever 301, as shown in Figure 3A, when paper 105 placed the end face of layman 300, the leading edge 107 of paper 105 can contact with separation block rubber 311, this moment, paper 105 was if be driven, because 311 pairs of paper of separation block rubber produce a damping counter-force, not driven all the other paper 105 are kept somewhere in paper box, and be unlikely multi-paper feed (Multi-feed).

When the paper that is installed is the less thin paper 105a of rigidity (Fig. 3 A), because paper 105a rigidity is less, behind the thrust P of bear from pickup roller 150, paper 105a easily produces and frustrates song (buckling) to absorb the friction counter-force that separation block rubber 311 is applied, and is beneficial to driven paper 105a and skids off separation block rubber 311 smoothly.Yet, when the paper that is installed is the bigger ground paper 105b of rigidity (Fig. 3 B), because paper 105b rigidity is bigger, so being difficult for producing, leading edge 107 frustrates song, and the present invention utilizes pickup roller 150 to be applied to the power P that is driven paper 105b, make the separation angle [alpha] of layman 300 become big,, be beneficial to the bigger paper 105b of rigidity and also can skid off paper box smoothly to reduce 311 pairs of counter-forces that are driven paper 105b of separation block rubber.

See also Fig. 4, it illustrates second preferred embodiment of paper separating structure of the present invention.Wherein, end by cantilever 301 ' extends a shell fragment (or other flexible members) 317 ', is used to replace the spring 317 of first embodiment, and this shell fragment 317 ' is resisted against the base of business machine, in order to regulate the anglec of rotation of cantilever 301 ', reach aforesaid separation function equally.In addition, a groove 310 ' is arranged also in cantilever 301 ', places separation block rubber 311 in it, act on identical with last embodiment, so repeat no more.

Paper separating structure of the present invention has the following advantages at least:

1. but enlarge the scope of unusable paper.

2. increase the stability of separation effect.

3. lower the probability of paperboard.

Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to limit the present invention; any those skilled in the art still can do some and change and retouching, so protection scope of the present invention should be with being as the criterion that claim was defined without departing from the spirit and scope of the present invention.

Claims

1. A paper separator structure, used in a paper feed mechanism of a business machine, the paper feed mechanism can feed at least one paper, the paper separator comprises:

A body having a friction surface in contact with the paper, the paper applies a first force to the body when the paper is fed, the body includes a cantilever connected to the business machine in a rotatable manner, the elastic member also connected to the business machine; and

An elastic element, one end of the elastic element is connected to the business machine, and the other end is connected to the body to apply a second force to the body, and the body can be adjusted through the first force and the second force Angle with the paper.

2. The paper separator structure as claimed in claim 1, wherein the elastic element is a spring.

3. The paper separator structure as claimed in claim 1, wherein the elastic element is an elastic piece.

4. The paper separator structure according to claim 1, wherein the material of the friction surface is rubber.

5. A paper separator structure, used in a paper feed mechanism of a business machine, the paper feed mechanism can feed at least one paper, the paper separator comprises:

A body has a groove, and the longitudinal direction of the groove is parallel to the paper feeding direction, the body is a cantilever connected to the business machine in a rotatable manner;

A friction element is arranged in the groove, and the friction element is in contact with the paper, and when the paper is fed, the paper applies a first force to the body through the friction element; and

An elastic element, one end of the elastic element is connected to the business machine, and the other end is connected to the body to apply a second force to the body, and the body and the body can be adjusted through the first force and the second force The angle between the sheets.

6. The paper separator structure according to claim 5, wherein the friction element protrudes from the groove.

7. The paper separator structure as claimed in claim 5, wherein the elastic element is a spring.

8. The paper separator structure according to claim 5, wherein the elastic element is an elastic piece.

9. The paper separator structure according to claim 5, wherein the material of the friction element is rubber.

10. A paper feeding mechanism configured in a business machine, the paper feeding mechanism can feed at least one paper, the paper feeding mechanism comprises: a bottom plate; a paper separator, configured at the bottom plate, to separate the papers , and at least one rib configured at the bottom plate to flatten the leading edge of the paper, wherein the paper separator includes:

a body having a friction surface in contact with the paper, when the paper is fed, the paper exerts a first force on the body, the body includes a cantilever rotatably connected to the business machine;

11. The paper feeding mechanism as claimed in claim 10, wherein the elastic element is a spring.

12. The paper feeding mechanism as claimed in claim 10, wherein the elastic element is an elastic piece.

13. The paper feeding mechanism as claimed in claim 10, wherein a friction element as the friction surface is arranged in a groove of the main body, the longitudinal direction of the groove is parallel to the paper feeding direction .

14. The paper feeding mechanism as claimed in claim 13, wherein the friction element protrudes from the groove.

15. The paper feeding mechanism as claimed in claim 10, wherein the material of the friction surface is rubber.

16. The paper feeding mechanism as claimed in claim 10, wherein the friction coefficient of the friction surface is greater than the friction coefficient of the rib.