CN2604323Y - paper sorting device - Google Patents

Abstract

A paper sheet sorting device. The utility model discloses a paper paging device includes subassembly such as elastic component, paging piece and paging wheel, wherein has the nick on paging piece and/or paging wheel. By applying the paper paging device of the utility model, the friction force between the paging wheel and the paging sheet and the paper can be reduced, and the paging effect is still achieved; the torque force required by the motor can be reduced, and the cost of the motor is further reduced; and the service life of the paging wheel and the paging sheet can be prolonged.

Description

paper sorting device

technical field

The utility model relates to a paper sorting device, in particular to a paper sorting device with notches on a sorting wheel and/or a sorting sheet.

Background technique

In recent years, workstations and personal computers have been developed to have high performance and fast processing of full-color images. Along with these developments, flatbed scanners have become more and more popular. And the automatic document feeder (Auto Document Feeder; ADF) is also more and more often used in conjunction with the scanner, thereby improving the image input speed and simplifying the operation procedure.

As shown in FIG. 1 , a scanner with an automatic document feeder in the prior art has two major units: a main body 10 and an automatic document feeder 20 . When using the scanner to scan a single sheet of paper, the upper cover 40 needs to be opened around the fulcrum 50 and the paper is placed on the glass seat 30 manually. When the scanner is used to scan multiple consecutive pages of paper, multiple pages of paper need to be placed into the paper tray 60 of the automatic document feeder 20 at the same time. Next, the first page of these papers is taken out by the feed wheel 70 , and then passes between the sorting wheel 80 and the sorting sheet 90 . When no paper passes between the sorting wheel 80 and the sorting sheet 90 , the sorting wheel 80 and the sorting sheet 90 are in contact with each other. However, when paper passes between the paging wheel 80 and the paging sheet 90, the elastic force of the elastic component 95 connected to the paging sheet 90 can cause a single paper to pass between the paging wheel 80 and the paging sheet 90. Necessary clearance required in between. Then, the sheet of paper is irradiated by a light source (not shown) in a subsequent path to complete scanning, and then falls onto the output tray 100 . In addition, the function of the gear 75 is to maintain the same rotation direction of the feeding wheel 70 and the sorting wheel 80 .

When the above-mentioned first page of paper advances to a proper position in the path, the feed wheel 70 and the sorting wheel 80 can continue to rotate through the detection of the sensor (not shown) to bring out the second page of paper. In this way, the papers in the paper tray 60 can be scanned page by page sequentially without manual operation, thereby realizing the function of the automatic document feeder 20 .

FIG. 2 is a perspective enlarged view of the sorting wheel and the sorting sheet of the automatic document feeder in FIG. 1 . The function of the sorting wheel 80 and the sorting sheet 90 is to prevent more than one sheet from passing between the sorting wheel 80 and the sorting sheet 90 at the same time. This sorting function of the sorting wheel 80 and the sorting sheet 90 is realized by the principle of friction. That is to say, since the friction force between the sorting wheel 80 and the paper is greater than the friction between the papers, it is ensured that only one page of paper can pass between the sorting wheel 80 and the sorting plate 90 .

The above-mentioned sorting wheel 80 is directly or indirectly powered by a motor (not shown) when rotating. For the same motor, if the sorting wheel 80 is driven at a low speed to convey the paper, the torque that the motor can provide will be higher; The available torque will be reduced or even insufficient. Especially when the paging wheel 80 and the paging sheet 90 are in direct contact (that is, the paper has not yet entered between the paging wheel 80 and the paging sheet 90), in order to overcome the friction between the paging wheel 80 and the paging sheet 90, the required motor torque is very large. big. At this time, it may even be out of step due to insufficient torque of the motor (the paper cannot be moved). It can be seen that due to the excessive friction between the paging wheel and the paging sheet and the paper, or between the paging wheel and the paging sheet in the prior art automatic document feeder, the paper cannot be moved when the torque of the motor is insufficient.

In summary, the automatic document feeder of the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it.

Contents of the invention

In view of the above-mentioned defects, the main purpose of the present invention is to provide a paper sorting device, which can reduce the friction between the sorting wheel, the sorting sheet and the paper, and still have a sorting effect.

The second object of the present invention is to provide a paper sorting device, which can reduce the torque required by the motor, thereby reducing the cost of the motor.

The third purpose of the present utility model is to provide a paper sorting device, which can prolong the life of the sorting wheel and the sorting sheet.

In order to achieve the above purpose, the utility model provides a paper sorting device, which is installed in an automatic paper feeder, and the paper sorting device is used to bring in a paper, wherein the paper sorting device at least includes: an elastic component, the elastic one end of the component is fixed into the above-mentioned automatic document feeder; a page separation sheet, one surface of which is connected to the other end of the elastic assembly; and a page separation wheel, one surface of the page separation wheel or the other surface of the page separation sheet has a score, Wherein, when the paper has not yet entered between the paging wheel and the paging sheet, the other surface of the paging sheet is in contact with the surface of the paging wheel, and when the paper enters between the paging wheel and the paging sheet, the elastic component is moderately compressed, thereby The two surfaces of the paper are respectively in contact with the other surface of the separation sheet and the surface of the separation wheel.

In order to achieve the above object, the utility model provides another paper sorting device, which is installed in an automatic paper feeder, and the paper sorting device is used to bring in a paper, wherein the paper sorting device at least includes: an elastic component, the elastic One end of the assembly is fixed in the automatic document feeder; a page-separating sheet, one surface of which is connected to the other end of the elastic component, and the other surface of the page-separating sheet has a first notch; and a page-separating wheel, the page-separating One surface of the wheel has a second score, wherein when the paper has not yet entered between the sorting wheel and the sorting sheet, the other surface of the sorting sheet is in contact with the said surface of the sorting wheel, and when the paper enters between the sorting wheel and the separating sheet During this time, the elastic component is moderately compressed, whereby the two surfaces of the paper are respectively in contact with the other surface of the pager and the surface of the pager wheel.

Brief description of the drawings

The technical solution and other beneficial effects of the utility model will be apparent through the detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

In the attached picture,

Figure 1 is a side view of a prior art scanner with an automatic document feeder;

Fig. 2 is a three-dimensional enlarged view of the paging wheel and the paging sheet of the automatic document feeder in Fig. 1;

3A is a perspective view of a paper sorting device in a preferred embodiment of the present invention;

Fig. 3B is a sectional view obtained along line dd' in Fig. 3A;

Fig. 4 is a perspective view of a paper sorting device of another preferred embodiment of the present invention; and

Fig. 5 is a perspective view of a paper sorting device in another preferred embodiment of the present invention.

Detailed ways

Hereinafter, the present utility model will be described in detail.

The utility model provides a paper paging device with notches on the paging wheel and/or the paging sheet, thereby reducing the friction between the paging wheel, the paging sheet and the paper, or between the paging wheel and the paging sheet. As shown in FIG. 3A and FIG. 3B , the paper sorting device at least includes components such as a sorting wheel 180 , a sorting sheet 190 , and an elastic component 195 . One end of the elastic component 195 is fixed in the automatic document feeder (not shown), and the other end of the elastic component 195 is connected to the lower surface of the sheet 190 , wherein the elastic component 195 can be a spring, for example. When no paper passes between the paging wheel 180 and the paging sheet 190 , the paging wheel 180 and the paging sheet 190 are in contact with each other. However, when paper (not shown in the figure) passes between the paging wheel 180 and the paging sheet 190, the elastic force of the elastic component 195 connected to the paging sheet 190 can cause an order to be generated between the paging wheel 180 and the paging sheet 190. Necessary gap required for single sheets of paper to pass between them. In addition, the reason why the paging wheel 180 can bring the single-page paper from one side of the gap between the paging wheel 180 and the paging sheet 190, and then the single-page paper from the side of the gap between the paging wheel 180 and the paging sheet 190 The other side is brought out because the frictional force between the surface of the sorting wheel 180 and the paper is greater than the frictional force between the upper surface of the sorting sheet 190 and the paper.

In a preferred embodiment of the present invention, as shown in FIG. 3A and FIG. 3B , the surface of the sorting wheel 180 has notches 182 , and the surface of the sorting sheet 190 has notches 192 . In addition, the notch 182 of the sorting wheel 180 and the notch 192 of the sorting sheet 190 must be in the same direction (ie, the same direction as the y-coordinate axis), so as to exert the function of reducing friction of the present invention. That is, the directions of the notch 182 and the notch 192 can be as shown in FIG. 3A . Alternatively, if the direction of the notch 182 is at an angle of 90 degrees to that shown in FIG. axis direction).

In addition, the relative positional relationship between the notch 182 of the sorting wheel 180 and the notch 192 of the sorting sheet 190 is not limited in principle. That is to say, the positional relationship between the notch 182 and the notch 192 may not need to overlap (as shown in FIG. 3A and FIG. 3B ), or may overlap (not shown). However, if the positional relationship between the notch 182 and the notch 192 is not overlapping, for example, the notch 182 of the pagination wheel 180 corresponds to the protruding portion 194 of the paging sheet 190, and the protruding portion 184 of the paging wheel 180 corresponds to the notch of the paging sheet 190. Score 192, in order to prevent protruding portion 194 from being embedded in notch 182 and protruding portion 184 from being embedded in notch 192, the width a of notch 182, the width c of protruding portion 184, and the width a' of notch 192 , and the width c' of the protruding portion 194 needs to be properly limited. For example, as shown in FIG. 3A and FIG. 3B , the width a must be smaller than the width c', and the width c must be greater than the width a', in order to achieve the above purpose. As for, the depth b of the notch 182 and the depth b' of the notch 192 need not be limited.

In addition, the notches 182 can be distributed discontinuously in addition to surrounding the sorting wheel 180 as shown in FIG. 3A , as if the surface of the sorting wheel 180 is covered with holes. Similarly, except that the notches 192 can span from one side of the paging sheet 190 to the other side as shown in FIG. 3A , they can also be discontinuously distributed, as if the upper surface of the paging sheet 190 is covered with holes.

When there is paper between the paging wheel 180 and the paging sheet 190, the design of the notch 182 of the paging wheel 180 and the notch 192 of the paging sheet 190 can be used to reduce the space between the paging wheel 180 and the paper and between the paging sheet 190 and the paper, respectively. contact area, thus reducing friction and still having a paging effect. Conversely, if there is no paper between the paging wheel 180 and the paging sheet 190, the design of the notch 182 of the paging wheel 180 and the notch 192 of the paging sheet 190 can be used to reduce the contact area between the paging wheel 180 and the paging sheet 190, Thus reducing friction and still having a pagination effect.

In addition, the sorting wheel 180 is powered directly or indirectly by a motor (not shown) when rotating. For the same motor, if the sorting wheel 180 is driven at a low speed to convey the paper, the torque that the motor can provide will be higher; The available torque will be reduced or even insufficient. Especially when the paging wheel 180 and the paging sheet 190 are in direct contact (that is, the paper has not yet entered between the paging wheel 180 and the paging sheet 190), in order to overcome the friction between the paging wheel 180 and the paging sheet 190, the required motor torque is very large. big. In the present invention, since the paging wheel 180 with the notch 182 and the paging sheet 190 with the notch 192 can reduce the frictional force, the required motor torque can be reduced, thereby further reducing the cost of the motor.

Furthermore, the contact area between the paging wheel 180 and the paging sheet 190 is greatly reduced due to the notch 182 and the notch 192, thereby reducing the wear on the surface of the paging wheel 180 and the paging sheet 190, thereby further extending the length of the paging wheel. 180 and the life-span of the paging sheet 190.

In another preferred embodiment of the present invention, as shown in FIG. 4 , the paging wheel 180 still has a notch 182 , but the paging sheet 190 does not have a notch, and the notch 182 of the paging wheel 180 can be in any direction.

In another preferred embodiment of the present invention, as shown in FIG. 5 , the paging sheet 190 still has a notch 192 , but the paging wheel 180 does not have a notch, and the notch 192 of the paging sheet 190 can be in any direction.

To sum up, one advantage of the present invention is to provide a paper sorting device, which can reduce the friction between the sorting wheel, the sorting sheet and the paper, and still have a sorting effect.

Another advantage of the present invention is to provide a paper sorting device, which can reduce the torque required by the motor, thereby reducing the cost of the motor.

Another advantage of the present invention is to provide a paper sorting device, which can prolong the life of the sorting wheel and the sorting sheet.

It can be understood that, for those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and technical concepts of the present utility model, and all these changes and deformations should belong to the appended documents of the present utility model. the scope of protection of the claims.

Claims (7)

1. A paper sorting device, arranged in an automatic document feeder, and the paper sorting device is used to bring in a paper, characterized in that the paper sorting device includes at least: an elastic component, one end of the elastic component is fixed in the automatic document feeder; a split sheet, one surface of the split sheet is connected to the other end of the elastic component; and A sorting wheel having notches on one surface of the sorting wheel or the other surface of the sorting sheet, wherein when the paper has not yet entered between the sorting wheel and the separating sheet, the other surface of the sorting sheet and the separating wheel The surfaces of the paper are in contact with each other, and when the paper enters between the sorting wheel and the separating sheet, the elastic component is moderately compressed, so that the two surfaces of the paper are respectively connected to the other surface of the separating sheet and the separating sheet The surfaces of the wheels are in contact with each other. 2. The paper sorting device according to claim 1, wherein the elastic component is a spring. 3. The paper sorting device according to claim 1, wherein the frictional force between the surface of the sorting wheel and the paper is greater than the frictional force between the other surface of the sorting sheet and the paper. 4. A paper sorting device, which is arranged in an automatic document feeder, and the paper sorting device is used to bring in a paper, characterized in that the paper sorting device at least includes: an elastic component, one end of the elastic component is fixed in the automatic document feeder; A split sheet, one surface of the split sheet is connected to the other end of the elastic component, and the other surface of the split sheet has a first score; and A sorting wheel, one surface of the sorting wheel has a second score, wherein when the paper has not entered between the sorting wheel and the sorting sheet, the other surface of the sorting sheet and the surface of the sorting wheel are in contact with each other , and when the paper enters between the sorting wheel and the sorting sheet, the elastic component is moderately compressed, thereby making the two surfaces of the paper and the other surface of the sorting sheet and the surface of the sorting wheel interact with each other touch. 5. The paper sorting device according to claim 4, wherein the elastic component is a spring. 6. The paper sorting device according to claim 4, wherein the frictional force between the surface of the sorting wheel and the paper is greater than the frictional force between the other surface of the sorting sheet and the paper. 7. The paper sorting device according to claim 4, wherein the first notch and the second notch are in the same direction.

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