Scanning device with paper taking mechanism

Abstract

The application discloses a scanning device with a paper taking mechanism, which comprises a shell, a containing space, a paper feeding channel which is through from the front end of the shell to the rear end of the shell and comprises a paper feeding port and a paper discharging port, a pair of paper feeding wheels which are contained in the containing space and comprise an upper paper feeding wheel and a lower paper feeding wheel which are opposite to each other and contact each other, and the contact point of the pair of paper feeding wheels is arranged in the paper feeding channel, a paper feeding blocking arm which is movably connected to the upper side of the paper feeding channel and makes part of the paper feeding blocking arm fall into the paper feeding channel, a paper feeding disc which is movably connected to the lower side of the paper feeding channel, and a spring which is connected between the shell and the paper feeding disc and makes part of the paper feeding disc lift up into the paper feeding channel.

Description

Technical Field

[0001] This invention relates to a paper feeding mechanism for a scanner, and more particularly to a paper feeding mechanism disposed at the paper inlet of the scanning device to feed paper into the paper feed path. Background Technology

[0002] Please see Figure 1 A commonly used scanner 100' includes a housing 10', a paper feed channel 20' passing through the housing 10', a plurality of paper feed rollers 21' housed in the housing 10' and arranged along the paper feed channel 20', and at least one scanning optical engine 22'. Furthermore, to enable the commonly used scanner 100' to scan books of a certain thickness in addition to general paper, the height of the paper inlet 23' of the scanner 100' is often set to be slightly greater than the thickness of the book, and the paper feed rollers 21' are movably arranged on both sides of the paper feed channel 20', thereby allowing the distance between the paper feed rollers 21' to automatically adapt to the thickness of the paper fed through the paper feed channel 20'.

[0003] However, as Figure 2 As shown, the larger paper feed opening 23' provides more space for the paper but also reduces the constraint on the paper, making it more prone to warping or skewing as the paper passes through the paper feed opening 23'. Therefore, it is necessary to provide a paper guide structure that has sufficient space to feed books while also providing sufficient guidance for individual sheets of paper to prevent warping or skewing. Utility Model Content

[0004] The purpose of this invention is to provide a paper guide structure that has sufficient space to feed books and can provide sufficient guidance for individual sheets of paper to avoid paper warping or skewing.

[0005] To achieve the above objectives, the present invention discloses a scanning device comprising: a housing having an accommodating space inside; a paper feed channel extending from the front end to the rear end of the housing and including a paper inlet and a paper outlet; a pair of paper feed rollers housed in the accommodating space and including an upper paper feed roller and a lower paper feed roller that are vertically opposite and in contact with each other, with the contact point of the paper feed rollers being disposed in the paper feed channel; a paper feed stop arm pivotally connected to the upper side of the paper feed channel and causing a portion of the paper feed stop arm to fall into the paper feed channel to shield the upper paper feed roller above the contact point; a paper feed tray pivotally connected to the lower side of the paper feed channel; and a spring connected between the housing and the paper feed tray to apply an upward force to the paper feed tray and cause a portion of the paper feed tray to rise into the paper feed channel to shield the lower paper feed roller below the contact point.

[0006] Furthermore, the paper feed roller further includes a paper feed roller frame movably disposed in the accommodating space, and an elastic member connected between the paper feed roller frame and the housing, wherein the upper paper feed roller is pivotally connected to the paper feed roller frame.

[0007] Furthermore, the scanning device is further provided with a single-pass paper feed channel and a U-shaped paper feed channel. The single-pass paper feed channel extends obliquely downward from the upper surface of the housing, and the two ends of the U-shaped paper feed channel are respectively connected to the single-pass paper feed channel and the paper feed channel. The connection between the U-shaped paper feed channel and the paper feed channel is located between the paper inlet and the paper feed roller pair.

[0008] Furthermore, the paper feed stop arm includes a stop arm shaft pivotally connected between the paper feed port and the upper paper feed roller, a guide arm extending from the stop wall axis toward the contact point, and a limiting arm extending upward from the stop arm axis.

[0009] Furthermore, the paper feed tray includes a paper feed tray body, at least one paper feed tray shaft disposed on the side edge of the paper feed tray body and pivotally connected to the housing, and a guide ramp disposed on the upper surface of the paper feed tray body.

[0010] Furthermore, the spring is configured as a torsion spring and is coaxially arranged with the paper feed tray shaft. One end of the torsion spring abuts against the paper feed tray body, while the other end abuts against the housing.

[0011] In summary, the present invention provides a scanning device comprising: a paper feed arm pivotally connected to the upper side of the paper feed channel, and a paper feed tray pivotally connected to the lower side of the paper feed channel, thereby ensuring that the paper feeding mechanism of the present invention has sufficient space to feed books, and can provide sufficient guidance for single sheets of paper to avoid paper warping or skewing. Attached Figure Description

[0012] Figure 1 This is a cross-sectional schematic diagram of an existing automatic scanner;

[0013] Figure 2 This is a cross-sectional diagram showing how paper warps as it passes through the feed path of an existing automatic scanner.

[0014] Figure 3 This is a cross-sectional schematic diagram of the scanning device in this utility model;

[0015] Figure 4 This is a side view of the paper-taking mechanism in this utility model;

[0016] Figure 5 This is a side view of the paper feed arm in this utility model;

[0017] Figure 6 This is a side view of the paper feed tray in this utility model;

[0018] Figure 7 This is a schematic diagram of a thin document passing through a scanning device in this utility model;

[0019] Figure 8 This is a schematic diagram of the bookbinding device in this utility model;

[0020] Figure 9 This is a schematic diagram of the scanned document being fed out from the scanning device in this utility model. Detailed Implementation

[0021] To illustrate the technical content, structural features, objectives, and technical effects of the present invention in detail, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0022] Please see Figure 3 and Figure 4 The scanning device 100 of this utility model includes: a housing 10, the housing 10 having an accommodating space 11 inside. A paper feed channel 20 is provided in the accommodating space 11, and in this preferred embodiment, the paper feed channel 20 includes a single-pass paper feed channel 21 extending from the front end of the housing 10 to the rear end of the housing 10, and a U-shaped paper feed channel 22 extending obliquely downward from the upper surface of the housing 10 into the single-pass paper feed channel 21. The single-pass paper feed channel 21 includes a paper inlet 23 located at the front end of the housing 10 and a paper outlet 24 located at the rear end of the housing 10, and is configured to feed single documents or books. The U-shaped paper feed channel 22 connects the single-pass paper feed channel 21 and a continuous paper tray at the top of the housing 10 for continuous batch scanning. The connection point between the U-shaped paper feed channel 22 and the single-pass paper feed channel 21 is located after the paper inlet 23. A pair of paper feed rollers 30 are housed in the accommodating space 11 and include an upper paper feed roller 31 and a lower paper feed roller 32 that are opposite each other and in contact with each other. The contact point 33 of the paper feed rollers 30 is located in the paper feed channel 20 and is situated after the connection between the U-shaped paper feed channel 22 and the single-pass paper feed channel 21. In this preferred embodiment, the scanning device 100 of the present invention further includes a paper feed roller frame 31a movably disposed in the accommodating space 11, and an elastic member (not shown) connecting the paper feed roller frame 31a and the housing 10, wherein the upper paper feed roller 31 is pivotally connected to the paper feed roller frame 31a.

[0023] Furthermore, to enhance paper guidance, the scanning device 100 of this invention further includes: a paper feed stop arm 40, which is pivotally connected to the upper side of the single-pass paper feed channel 21, causing a portion of the paper feed stop arm 40 to fall into the single-pass paper feed channel 21 to shield the upper paper feed roller 31, which is positioned above the contact point 33. The paper feed stop arm 40 includes a stop arm shaft 41 pivotally connected between the paper inlet 23 and the upper paper feed roller 31, a guide arm 42 extending from the stop wall axis toward the contact point 33, and a limiting arm 43 extending upward from the stop arm shaft 41. A paper feed tray 50 is pivotally connected to the lower side of the single-feed channel 21. The paper feed tray 50 includes a paper feed tray body 52, at least one paper feed tray shaft 53 disposed on the side edge of the paper feed tray body 52 and pivotally connected to the housing 10, and a guide ramp 54 disposed on the upper surface of the paper feed tray body 52. ​​A spring 51 is connected between the housing 10 and the paper feed tray 50 to apply an upward force to the paper feed tray 50 and to raise a portion of the paper feed tray 50 into the feed channel 20 to shield the lower paper roller 32 below the contact point 33. In this preferred embodiment, the spring 51 is a torsion spring and coaxially arranged with the paper feed tray shaft 53, one end of the torsion spring abutting against the paper feed tray body 52, and the other end abutting against the housing 10.

[0024] Please see again Figures 7 to 9 The operation process of scanning different documents using the scanner in this utility model is described below:

[0025] like Figure 7 As shown, when the scanner of this invention scans a single sheet of paper, the paper feed stop arm 40 deflects downward under its own weight, causing the guide arm 42 to block in front of the upper paper feed roller 31. Meanwhile, the paper feed tray 50 is raised upward under the action of the spring 51, causing the guide ramp 54 to block in front of the lower paper feed roller 32. Therefore, when the paper is fed into the single-pass paper feed channel 21 from the paper inlet 23, it will be guided to the contact point 33 by the guide arm 42 and the guide ramp 54, reducing the possibility of paper warping or skewing.

[0026] For example Figure 8 As shown, when the scanner of this invention scans a bound book, the book, due to its high rigidity from binding, comes into contact with the guide arm 42 and the guide ramp 54, which will raise the paper feed stop arm 40 and press the paper feed tray 50 downward. Therefore, when the book is fed into the single-pass paper feed channel 21 through the paper inlet 23, the paper feed stop arm 40 and the paper feed tray 50 will be pushed away by the book, allowing the book to be scanned.

[0027] And such Figure 9 As shown, after the book scanning is completed, the book is fed out from the paper output port 24. Without the book's resistance, the paper feed stop arm 40 deflects downwards under its own weight, causing the guide arm 42 to block the front of the upper paper feed roller 31. Simultaneously, the paper feed tray 50 rises again under the action of the spring 51, causing the guide ramp 54 to block the front of the lower paper feed roller 32.

[0028] In summary, the scanning device with a paper feeding mechanism of this utility model includes: a housing; a receiving space; a paper feeding channel extending from the front end of the housing to the rear end of the housing and including a paper inlet and a paper outlet; a pair of paper feeding rollers housed in the receiving space and including an upper paper feeding roller and a lower paper feeding roller that are vertically opposite and in contact with each other, and the contact point of the paper feeding roller pair is disposed in the paper feeding channel; a paper feeding arm pivotally connected to the upper side of the paper feeding channel and causing a portion of the paper feeding arm to fall into the paper feeding channel; a paper feeding tray pivotally connected to the lower side of the paper feeding channel; and a spring connected between the housing and the paper feeding tray, causing a portion of the paper feeding tray to rise into the paper feeding channel. The movable paper feeding arm and the paper feeding tray provide sufficient space in the paper feeding channel to feed books, while also guiding individual sheets of paper to prevent warping or skewing.

Claims

1. A scanning device, characterized in that... It comprises: a housing, the interior of which forms an accommodating space; a paper feeding channel extending from the front end of the housing to the rear end of the housing and including a paper inlet and a paper outlet; and a pair of paper feeding rollers, the pair of paper feeding rollers being housed in the accommodating space and including an upper paper feeding roller and a lower paper feeding roller that are opposite each other and in contact with each other, and the contact point of the pair of paper feeding rollers being disposed in the paper feeding channel; A paper feed stop arm, which is pivotally connected to the upper side of the paper feed channel and causes a portion of the paper feed stop arm to fall into the paper feed channel to shield the upper paper feed roller above the contact point; and a paper feed tray, which is pivotally connected to the lower side of the paper feed channel. And a spring connected between the housing and the feed tray to apply an upward force to the feed tray and to raise a portion of the feed tray into the feed channel to shield the lower feed roller below the contact point position.

2. The scanning device as described in claim 1, characterized in that: The paper feed roller further includes a paper feed roller frame movably disposed in the accommodating space, and an elastic member connected between the paper feed roller frame and the housing, wherein the upper paper feed roller is pivotally connected to the paper feed roller frame.

3. The scanning device as described in claim 1, characterized in that: The scanning device is further provided with a single-pass paper feed channel and a U-shaped paper feed channel. The single-pass paper feed channel extends downward at an incline from the upper surface of the housing, and the two ends of the U-shaped paper feed channel are respectively connected to the single-pass paper feed channel and the paper feed channel. The connection between the U-shaped paper feed channel and the paper feed channel is located between the paper inlet and the paper feed roller pair.

4. The scanning device as described in claim 1, characterized in that: The paper feed stop arm includes a stop arm shaft pivotally connected between the paper feed port and the upper paper feed roller, a guide arm extending from the stop wall axis toward the contact point, and a limiting arm extending upward from the stop arm axis.

5. The scanning device as claimed in claim 1, characterized in that: The paper feed tray includes a paper feed tray body, at least one paper feed tray shaft disposed on the side edge of the paper feed tray body and pivotally connected to the housing, and a guide slope disposed on the upper surface of the paper feed tray body.

6. The scanning device as described in claim 5, characterized in that: The spring is configured as a torsion spring and is coaxially arranged with the paper feed tray shaft. One end of the torsion spring abuts against the paper feed tray body, while the other end abuts against the housing.

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