Scanner paper channel switching mechanism

Abstract

The utility model provides a paper channel switching mechanism of a scanner. The paper channel switching mechanism comprises a scanner body, a paper channel switching guide plate and a driving motor, wherein the paper channel switching guide plate and the driving motor are arranged in the scanner body; a scanning channel, a paper outlet channel and a transfer channel are arranged in the scanner body, and the paper channel switching guide plate is rotationally connected to the intersection of the scanning channel, the paper outlet channel and the transfer channel; the section of the paper channel switching guide plate is triangular, a first guide surface is arranged at the top of the paper channel switching guide plate, and an arc-shaped second guide surface obliquely extending downwards is arranged on one side wall, close to the scanning channel, of the paper channel switching guide plate; the driving motor is in transmission connection with the paper channel switching guide plate and used for driving the paper channel switching guide plate to rotate, so that the scanning channel communicates with the paper outlet channel through the first guide face or communicates with the transferring channel through the second guide face, and therefore free switching of the paper channels is achieved.

Description

Technical Field

[0001] This utility model relates to the field of scanner technology, specifically to a scanner paper track switching mechanism. Background Technology

[0002] Automatic printing with traces involves digitizing students' assignments or exams using a scanner. The digitized assignments or exams are then processed by a calculation module for data comparison and calculation. Finally, the results are printed onto the assignments or exams. This not only reduces the workload of teachers in grading exams but also leaves grading marks on the original papers, facilitating subsequent explanations by teachers and review by students.

[0003] Existing automatic print tracking systems typically involve scanning documents first, then conveying them to the printer via a transfer channel, and finally printing based on the calculation results. However, these systems are relatively simple and lack standalone scanning functionality. To add standalone scanning capabilities, a paper output channel can be added to the scanner of the print tracking system, allowing users to use the scanning function independently. However, how to freely switch the paper path when switching between scanning and scan-to-print modes, ensuring connectivity between the scanning channel and the paper output or transfer channel, remains a pressing issue that needs to be addressed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a scanner paper track switching mechanism that can freely switch paper tracks according to needs.

[0005] The technical solution of this utility model is to provide a scanner paper path switching mechanism with the following structure: including a scanner body and a paper path switching guide plate and a drive motor disposed within the scanner body; the scanner body is provided with a scanning channel, a paper output channel and a transfer channel, and the paper path switching guide plate is rotatably connected at the intersection of the scanning channel, the paper output channel and the transfer channel; the paper path switching guide plate has a triangular cross-section, with a first guide surface at its top and a second guide surface extending downward at an angle and forming an arc on one side wall near the scanning channel; the drive motor is drivenly connected to the paper path switching guide plate and is used to drive the paper path switching guide plate to rotate, so that the scanning channel is connected to the paper output channel through the first guide surface or to the transfer channel through the second guide surface.

[0006] By adopting the above structure, the scanner paper track switching mechanism of this utility model has the following advantages compared with the prior art:

[0007] This invention can drive the paper path switching guide plate to rotate via a drive motor, so that the second guide surface is in contact with the inner wall of the transfer channel. At this time, the transfer channel is closed, and the scanning channel is connected to the paper output channel through the first guide surface; or the first guide surface is in contact with the top wall of the paper output channel. At this time, the paper output channel is closed, and the scanning channel is connected to the transfer channel through the second guide surface, thereby realizing free switching of the paper path.

[0008] Preferably, the end of the scanning channel is provided with an upwardly recessed receiving groove for accommodating one end of the paper path switching guide plate near the scanning channel, thereby closing the paper output channel. The receiving groove can conceal the end of the paper path switching guide plate, preventing paper from getting stuck between the paper path switching guide plate and the inner top wall of the paper output channel.

[0009] Preferably, the end of the first guide surface near the paper output channel is raised upwards to increase the paper output height. This prevents paper from getting stuck at the joint between the first guide surface and the paper output channel.

[0010] Preferably, the second guide surface extends downward at one end near the transfer channel to guide the passing paper into the transfer channel.

[0011] Preferably, the paper path switching guide plate is hollow and has internal reinforcing ribs. Making the paper path switching guide plate hollow reduces material usage and saves costs; the internal reinforcing ribs ensure sufficient strength.

[0012] Preferably, the paper path switching guide plate is provided with shaft holes extending along its length and penetrating its two side walls. A rotating shaft is connected in the shaft hole, and a driven wheel is connected to one end of the rotating shaft. The driving wheel of the drive motor is connected to the driven wheel in a transmission connection.

[0013] Preferably, the outer peripheral wall of the rotating shaft is provided with a cross-section extending along its length, and the cross-sectional shape of the shaft hole matches the cross-sectional shape of the rotating shaft, so as to limit the relative circumferential positioning of the rotating shaft and the paper path switching guide plate.

[0014] Preferably, the scanner body also includes an angle sensor for detecting the rotation angle of the paper path switching guide plate and transmitting the detected signal to the controller of the drive motor. The angle sensor can prevent damage to parts caused by excessive rotation angle of the drive motor.

[0015] Preferably, a torque limiter is connected to the output end of the drive motor, and the driven end of the torque limiter is connected to the paper path switching guide plate. The torque limiter can limit the torque output of the drive motor, thus providing overload protection. After the paper path switching guide plate has rotated to its position, it can prevent damage to parts caused by the continued rotation of the drive motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the present invention in scanning mode.

[0018] Figure 3 This is a cross-sectional view of the present invention in scanning and printing mode.

[0019] Figure 4 This is a schematic diagram of the paper path switching guide plate and drive motor in this utility model.

[0020] Figure 5 This is a schematic diagram of the paper path switching guide plate in this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the rotating shaft in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Scanner body; 11. Scanning channel; 111. Receiving slot; 12. Paper output channel; 13. Transfer channel; 2. Paper path switching guide plate; 21. First guide surface; 22. Second guide surface; 23. Reinforcing rib; 24. Shaft hole; 25. Rotating shaft; 251. Cut surface; 26. Driven wheel; 3. Drive motor. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the terms "first", "second", etc., are only used to distinguish the names of various components and do not have a primary or secondary relationship. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown;

[0027] This utility model discloses a scanner paper track switching mechanism, including a scanner body 1, a paper track switching guide plate 2 and a drive motor 3 disposed in the scanner body 1.

[0028] The scanner body 1 has a scanning channel 11, a paper output channel 12 and a transfer channel 13. The paper path switching guide plate 2 is rotatably connected to the intersection of the scanning channel 11, the paper output channel 12 and the transfer channel 13.

[0029] The paper path switching guide plate 2 has a triangular cross-section, with a first guide surface 21 at its top and a second guide surface 22 extending downwards in an arc shape on one side wall near the scanning channel 11. The drive motor 3 is connected to the paper path switching guide plate 2 and drives it to rotate, allowing the scanning channel 11 to connect with the paper output channel 12 via the first guide surface 21, or with the transfer channel 13 via the second guide surface 22. The drive motor 3 can be a stepper motor and is electrically connected to the scanner control panel. The user can set the scanning mode or scan-print mode via the control panel, thereby controlling the drive motor 3 to rotate the paper path switching guide plate 2 to the corresponding position.

[0030] This invention allows the paper path switching guide plate 2 to rotate via a drive motor 3. In scanning mode, the second guide surface 22 is brought into contact with the inner wall of the transfer channel 13, at which point the transfer channel 13 is closed, and the scanning channel 11 is connected to the paper output channel 12 via the first guide surface 21. In scanning and printing mode, the first guide surface 21 is brought into contact with the top wall of the paper output channel 12, at which point the paper output channel 12 is closed, and the scanning channel 11 is connected to the transfer channel 13 via the second guide surface 22. This invention enables free switching of the paper path as needed, and is simple and convenient to operate.

[0031] like Figure 2 and Figure 3 As shown, the end of the scanning channel 11 is provided with an upwardly recessed receiving groove 111, which is used to accommodate one end of the paper path switching guide plate 2 near the scanning channel 11, thereby closing the paper output channel 12 and hiding the end of the paper path switching guide plate 2 to prevent paper from getting stuck between the paper path switching guide plate 2 and the inner top wall of the paper output channel 12.

[0032] For example Figure 4 and Figure 5 As shown, the first guide surface 21 is raised at one end near the paper output channel 12 to increase the height of the paper output, which can prevent the paper from getting stuck at the joint between the first guide surface 21 and the paper output channel 12.

[0033] The second guide surface 22 extends downward at one end near the transfer channel 13 to guide the passing paper into the transfer channel 13.

[0034] The paper path switching guide plate 2 is hollow, which can reduce the amount of material used and save costs; the paper path switching guide plate 2 is provided with reinforcing ribs 23 inside, which can increase the strength of the paper path switching guide plate 2.

[0035] like Figure 4-6 As shown, the paper path switching guide plate 2 is provided with shaft holes 24 extending along its length and penetrating its two side walls. A rotating shaft 25 is connected inside the shaft hole 24. One end of the rotating shaft 25 is connected to a driven wheel 26. The driving wheel of the drive motor 3 is connected to the driven wheel 26 through belt drive.

[0036] The outer peripheral wall of the rotating shaft 25 is also provided with a cross-section 251 extending along its length direction. The cross-sectional shape of the shaft hole 24 matches the cross-sectional shape of the rotating shaft 25, which is used to limit the relative circumferential positioning of the rotating shaft 25 and the paper path switching guide plate 2.

[0037] The scanner body 1 is also equipped with an angle sensor to detect the rotation angle of the paper path switching guide plate 2 and transmit the detected signal to the controller of the drive motor 3. The controller controls the drive motor 3 to stop according to the received signal to avoid damage to the parts caused by excessive rotation angle of the paper path switching guide plate 2.

[0038] A torque limiter is connected to the output end of the drive motor 3. The driven end of the torque limiter is connected to the driven wheel 26 on the paper path switching guide plate 2. The torque limiter, also called a safety coupling, is a component connecting the drive end and the driven end. Its main function is overload protection. When the paper path switching guide plate 2 has rotated to its position, if the drive motor 3 continues to rotate, its torque will exceed the set value of the torque limiter. At this time, the torque limiter will limit the transmission torque by slipping, thus preventing damage to parts even if the drive motor 3 rotates too much. The torque limiter is existing technology, and its specific structure will not be described in detail here.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A scanner paper track switching mechanism, characterized in that: The scanner body (1) includes a paper path switching guide plate (2) and a drive motor (3) disposed within the scanner body (1). The scanner body (1) is provided with a scanning channel (11), a paper output channel (12) and a transfer channel (13). The paper path switching guide plate (2) is rotatably connected to the intersection of the scanning channel (11), the paper output channel (12) and the transfer channel (13). The cross-section of the paper path switching guide plate (2) is triangular, with a first guide surface (21) at its top and a second guide surface (22) extending downwards and arc-shaped on one side wall near the scanning channel (11). The drive motor (3) is connected to the paper path switching guide plate (2) for driving the paper path switching guide plate (2) to rotate, so that the scanning channel (11) is connected to the paper output channel (12) through the first guide surface (21) or to the transfer channel (13) through the second guide surface (22).

2. The scanner paper track switching mechanism according to claim 1, characterized in that: The scanning channel (11) has an upwardly recessed receiving groove (111) at its end, which is used to accommodate the paper path switching guide plate (2) near the scanning channel (11) so that the paper output channel (12) is closed.

3. The scanner paper track switching mechanism according to claim 2, characterized in that: The first guide surface (21) is raised at the end near the paper output channel (12) to increase the height of the paper output.

4. The scanner paper track switching mechanism according to claim 1, characterized in that: The second guide surface (22) extends downward at one end near the transfer channel (13) to guide the passing paper into the transfer channel (13).

5. The scanner paper track switching mechanism according to claim 1, characterized in that: The paper path switching guide plate (2) is hollow and has reinforcing ribs (23) inside.

6. The scanner paper track switching mechanism according to claim 1, characterized in that: The paper path switching guide plate (2) is provided with a shaft hole (24) extending along its length and penetrating its two side walls. A rotating shaft (25) is connected inside the shaft hole (24). One end of the rotating shaft (25) is connected to a driven wheel (26). The driving wheel of the drive motor (3) is connected to the driven wheel (26) in a transmission connection.

7. The scanner paper track switching mechanism according to claim 6, characterized in that: The outer peripheral wall of the rotating shaft (25) is provided with a cross-section (251) extending along its length direction. The cross-sectional shape of the shaft hole (24) matches the cross-sectional shape of the rotating shaft (25) to limit the relative circumferential positioning of the rotating shaft (25) and the paper path switching guide plate (2).

8. The scanner paper track switching mechanism according to claim 7, characterized in that: The scanner body (1) is also equipped with an angle sensor, which is used to detect the rotation angle of the paper path switching guide plate (2) and transmit the detected signal to the controller of the drive motor (3).

9. The scanner paper track switching mechanism according to claim 1, characterized in that: A torque limiter is connected to the output end of the drive motor (3), and the driven end of the torque limiter is connected to the paper path switching guide plate (2) for transmission.

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