CN1439529A - Separator structure - Google Patents

Abstract

A paper dispenser structure includes a rotatable body, a friction element and an elastic element. Wherein, a groove is arranged on the rotatable body, and the lengthwise direction of the groove is parallel to the paper feeding direction. The friction element is arranged in the groove and is in contact with the paper, and when the paper is fed, the paper applies a first acting force to the body through the friction element. The elastic element is connected with the body to apply a second acting force to the body, and the first acting force and the second acting force are utilized to adjust the included angle between the body and the paper, so that the motor can be prevented from being out of step and the front edge of the paper can be prevented from being damaged after passing through the paper separator.

Description

Separator structure

                      

The invention relates to a paper separator structure, in particular to a paper separator structure capable of adjusting the paper separation angle.

Background technique

With the development of science and technology, various electronic and electrical products have become indispensable tools in daily life. For example, the commonly used machines in the office include computers, printers, fax machines, copiers...etc. For business machines such as printers, copiers and fax machines that use paper, their work efficiency will be affected by the paper feeding function. Therefore, how to produce a device that can effectively perform functions such as paper feeding and paper separation has become an important issue.

Taking the current printer as an example, in order to smoothly feed the paper into the printer for printing, the printer is equipped with an automatic paper feeding device to drive the paper forward. Before printing, the user can place the paper at the paper feeding device, and the paper feeding device can send out the paper one by one during printing, so that the ink dots ejected by the inkjet head can fall on the paper and form an image. Next, please refer to FIG. 1A , there is a bottom plate 101 below the automatic paper feeding device to carry paper, and a roller 150 is arranged above the bottom plate 101 to drive the paper forward. It should be noted that the bottom plate 101 is provided with a paper separator 103 and several smooth ribs 102. When the roller 150 drives the paper, the paper separator 103 can separate the paper one by one, and the ribs 102 can assist the paper to advance smoothly.

Please refer to FIG. 1B , which shows a schematic diagram of traditionally the paper 105 travels along the bottom plate. Several ribs 102 and a paper separator 103 are arranged on the bottom plate 101 of the automatic paper feeding device parallel to the paper traveling direction. Since the ribs and the paper separator are arranged on the base plate at the same time, and the structures and functions of the two are different, the working conditions of the ribs 102 and the paper separator 103 will be discussed separately below. As far as the rib 102 is concerned, its function is to erect the paper so that the paper can slide forward smoothly. Therefore, in practical applications, the rib 102 can be made of a material with a small friction coefficient to make the paper travel more smoothly; generally speaking, In consideration of cost, smooth plastic or metal sheet will be selected for production to save cost. Next, please refer to FIG. 1C , which is a side view of the rib and the paper in FIG. 1B . As shown in the figure, the paper 105 travels along the direction A driven by the roller 150 (not shown). And the leading edge of the paper 105 will touch the surface of the rib 102 and slide along the direction A.

Please refer to Fig. 1D, which shows the advancing direction of the paper and the frictional reaction force diagram. The paper 105 advances along the direction A. Since the front edge of the paper 105 is in contact with the surface of the rib 102 and the separator 103, the rib 102 and the paper separator 103 will generate a frictional reaction force on the paper 105, and the direction B of this frictional reaction force is opposite to the advancing direction A of the paper, and the magnitude of the reaction force will increase as the rigidity of the paper 105 increases. When the reaction force increases to the point where the motor cannot bear the load, it will cause the motor to lose its step, and may also cause damage to the leading edge of the paper.

As we all know, there are various types and specifications of paper. In addition to the difference in material, the thickness (or g/m ² of paper) of various types of paper is also different. Therefore, when designing the paper separator, as shown in Figure 1E, the The paper angle α is set according to the range of the applicable paper (for example, the range is divided by the g/ ^m2 of the paper), so once the paper separation angle α is determined, it also means that the paper separator can only be used within a certain range For example, it works for 70g/m ² to 80g/m ² paper, not for all papers. Therefore, for the traditional method, the disadvantage of the paper separator is that the paper separation angle α is designed for paper within a certain range. From another point of view, even if the paper separator is well done, it can only be applied to the paper within the specific range selected during design at best, so the effect of paper separation is not obvious in actual application, resulting in many sheets of paper being aligned. A situation occurs where the feed or drive motor is out of step.

Contents of the invention

The object of the present invention is to provide a paper feeding machine that can expand the limit range of paper, improve the stability of the paper separation function and reduce the probability of jamming.

The purpose of the present invention is achieved by providing a paper separator structure for use in a paper feeding mechanism of a business machine, the paper feeding mechanism can feed at least one paper, the paper separator includes: a body, with A friction surface is in contact with the paper, and when the paper is fed, the paper applies a first force to the body; and an elastic member is connected to the body to apply a second force to the body, through the The first acting force and the second acting force can adjust the included angle between the main body and the paper.

The present invention also provides a paper separator structure used in a paper feeding mechanism of a business machine, the paper feeding mechanism can feed at least one paper, the paper separator includes: a body with a groove, and the groove The longitudinal direction of the groove is parallel to the feeding direction of the paper; 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 is applied to the paper through the friction element The main body has a first action force; and an elastic element is connected to the main body to apply a second action force to the main body, through which the first action force and the second action force can adjust the distance between the main body and the paper angle.

The present invention also provides a paper feeding mechanism, configured in a business machine, the paper feeding mechanism can feed at least one paper, the paper feeding mechanism includes: a bottom plate; a paper separator, configured at the bottom plate, to separate the paper Each paper includes: a body having a friction surface in contact with the paper, and when the paper is fed, the paper exerts a first force on the body; an elastic member connected to the body to apply a first force to the body; Body-a second action force, through which the angle between the body and the paper can be adjusted through the first action force and the second action force; and at least one rib, configured at the bottom plate, to flatten the front of the paper edge.

Furthermore, the paper separator structure of the present invention is based on a suspension system, which includes a cantilever, an elastic element and a paper separation rubber block. Due to the different rigidity of the paper, the reaction force on the paper separator is also relatively different, and this suspension system makes the paper separator produce different paper separation angles according to the amount of force applied to the paper separator by the paper, so that the rigidity is higher. For large paper, the paper separation angle becomes larger, and the reaction force of the paper separation rubber block on the paper is dispersed, so that the paper slides out of the paper separator smoothly, which can avoid the possibility of motor out of step and greatly reduce the leading edge of the paper through the paper separation Damage caused by the device.

Description of drawings

FIG. 1A is a schematic diagram of a paper feeding mechanism in a traditional business machine;

Fig. 1B is a schematic diagram of paper traveling along the rib;

Figure 1C is a side view of the paper and ribs in Figure 1B;

Figure 1D is a schematic diagram of paper traveling along the ribs;

Figure 1E is a side view of the paper and ribs in Figure 1D;

Fig. 2A is a schematic structural diagram of a paper separator according to a preferred embodiment of the present invention;

Fig. 2B is an exploded view of the paper separator in Fig. 2A;

Figure 2C is a side view of the paper separator in Figure 2A;

Fig. 3A is a side view of the paper separator of the present invention under force when it is applied to the thinner paper paper separation state;

Fig. 3B is a side view of the paper separator of the present invention under force when it is applied to the thicker paper paper separation state;

Fig. 4 is a schematic diagram of a paper separator combining a cantilever and an elastic element according to another embodiment of the present invention.

Detailed ways

Please refer to FIG. 2A , FIG. 2B and FIG. 2C , which are the first preferred embodiment of the paper separator structure of the present invention. As shown in the figure, the paper separating rubber block (rubber) 311 in the paper separator 300 is placed in the groove 310 of the cantilever 301, and the friction coefficient of the paper separating rubber block 311 is greater than that of other ribs 102, in order to provide The damping force of the advance of the paper 105, of course, other wear-resistant materials can also be used as a substitute for the paper separation rubber block 311. The cantilever 301 is rotatably mounted on a fixed shaft 312 on the base of the office machine, and one end of the spring 317 is fixed on the office machine and the other end is connected to the cantilever 301 to adjust the rotation angle of the cantilever 301 . The main body of the paper separator 300 is a cantilever 301. When making the paper separator 300, a groove 310 can be formed in the center of the cantilever 301 to place the paper separation rubber block 311; After entering the groove 310, the top surface of the paper separation rubber block 311 can be slightly higher than the top surface of the cantilever 301, as shown in Figure 3A, when the paper 105 is placed on the top surface of the paper separator 300, the leading edge of the paper 105 107 will be in contact with the paper separation rubber block 311. If the paper 105 is driven at this time, since the paper separation rubber block 311 will generate a damping reaction force on the paper, the rest of the paper 105 that has not been driven will be left in the paper box, so as not to Multi-feed.

When the installed paper is less rigid thin paper 105a (FIG. 3A), since the paper 105a is less rigid, the paper 105a is prone to buckling (buckling) to absorb moisture after receiving the thrust P from the pick-up roller 150. The frictional reaction force exerted by the paper rubber block 311 facilitates the driven paper 105a to slide out of the paper separation rubber block 311 smoothly. However, when the installed paper is thicker paper 105b with higher rigidity ( FIG. 3B ), since the paper 105b is more rigid, the leading edge 107 is not easy to buckle. However, the present invention utilizes the pick-up roller 150 to feed the driven paper 105b. The force P increases the paper separation angle α of the paper separator 300 to reduce the reaction force of the paper separation rubber 311 on the driven paper 105b, so that the paper 105b with higher rigidity can slide out of the paper cassette smoothly.

Please refer to FIG. 4 , which shows a second preferred embodiment of the structure of the paper separator of the present invention. Wherein, a shrapnel (or other elastic element) 317' is extended from one end of the cantilever 301' to replace the spring 317 of the first embodiment, and the shrapnel 317' is pressed against the base of the business machine to adjust the cantilever 301' The rotation angle can also achieve the aforementioned paper separation function. In addition, there is also a groove 310' in the cantilever 301', in which a paper separating rubber block 311 is placed, and its function is the same as that of the previous embodiment, so it will not be repeated here.

The paper separator structure of the present invention has at least the following advantages:

1. Expand the range of usable paper.

2. Increase the stability of paper separation effect.

3. Reduce the probability of paper jams.

Although the present invention has been disclosed in conjunction with the above preferred embodiments, it is not intended to limit the present invention. Any skilled person in the art can still make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should be defined by the claims.

Claims (19)

1. paper separating structure is used for a paper feed mechanism of a business machine, and this paper feed mechanism can be presented at least one paper, and this layman comprises:

One body has a friction surface and contacts with this paper, and when presenting this paper, this paper is applied to this body one first active force; And

One flexible member 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.

2. paper separating structure as claimed in claim 1, wherein, this body comprises that a cantilever is connected in this business machine in rotatable mode, this flexible member also is connected in this business machine.

3. paper separating structure as claimed in claim 1, wherein, this flexible member is a spring.

4. paper separating structure as claimed in claim 1, wherein, this flexible member is a shell fragment.

5. paper separating structure as claimed in claim 1, wherein, the material of this friction surface is a rubber.

6. paper separating structure is used for a paper feed mechanism of a business machine, and this paper feed mechanism can be presented at least one paper, and this layman comprises:

One body has a groove, and the longitudinally of this groove is parallel to the direction of this paper feeding;

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

One flexible member 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.

7. paper separating structure as claimed in claim 6, wherein, this body is that a cantilever is connected in this business machine in rotatable mode, this flexible member also is connected in this business machine.

8. paper separating structure as claimed in claim 6, wherein, this friction element protrudes in this groove.

9. paper separating structure as claimed in claim 6, wherein, this flexible member is a spring.

10. paper separating structure as claimed in claim 6, wherein, this flexible member is a shell fragment.

11. paper separating structure as claimed in claim 6, wherein, the material of this friction element is a rubber.

12. a paper feed mechanism is disposed in the business machine, this paper feed mechanism can be presented at least one paper, and this paper feed mechanism comprises:

One base plate;

One layman is disposed at this base plate place, and to separate this each paper, it comprises:

One body has a friction surface and contacts with this paper, and when presenting this paper, this paper is granted this body one first active force;

One flexible member 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; And

At least one rib is disposed at this base plate place, to support the leading edge of flat this paper.

13. paper feed mechanism as claimed in claim 12, wherein, 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.

14. paper feed mechanism as claimed in claim 12, wherein, this flexible member is a spring.

15. paper feed mechanism as claimed in claim 12, wherein, this flexible member is a shell fragment.

16. paper feed mechanism as claimed in claim 12 wherein, also has the friction element as this friction surface, is arranged in the groove of this rotatable body, the longitudinally of this groove is parallel to the direction of this paper feeding.

17. paper feed mechanism as claimed in claim 16, wherein, this friction element protrudes in this groove.

18. paper feed mechanism as claimed in claim 12, wherein, the material of this friction surface is a rubber.

19. paper feed mechanism as claimed in claim 12, wherein, the coefficient of friction of this friction surface is greater than the coefficient of friction of this rib.

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