A data scanning device for preventing document skew

Abstract

The application discloses a data scanning device for preventing bill deviation, and relates to the technical field of bill scanning. The device comprises a placing table, a clamping cover is fixed on the bottom inner wall of the placing table through spot welding, and a positioning mechanism is installed on the top of the clamping cover. The bill on the transmission box is moved to the side of the positioning L-shaped rod by moving the upper clamp sleeve of the threaded rod, and the bill on the whole circular plate is positioned by the whole distance measuring sensor and scanning lens. The first motor on the clamping cover drives the whole sleeve column to rotate, so that the circular plate at the bottom of the bill starts to rotate, thereby starting to correct the angle of the whole bill on the placing table. Meanwhile, the iron block on the positioning L-shaped rod is connected with the electromagnet to fix one side of the bill, so that the circular plate can move and deviate in all directions in the movable groove, and the bill on the placing table does not need to be manually moved by the staff, so that the scanning rate of the whole bill is accelerated.

Description

Technical Field

[0001] This invention relates to the field of document scanning technology, specifically to a data scanning device for preventing document misalignment. Background Technology

[0002] For scanning invoices, traditional document scanners and flatbed scanners are widely used in offices and printing places due to their low price. However, document scanners can only place a single original document in a fixed position under the lens. Wrinkled documents need to be laid flat manually. They can only save a single image of the document to the computer. The process of placing the original document in a single position and then clicking scan is repeated continuously, resulting in unclear text in the scanned image, which affects subsequent OCR recognition. Using a regular scanner, only one original receipt can be placed inside the scanner. Each time a receipt is placed inside, the scanner cover needs to be manually opened / closed. The scanned and saved files can only save a single image of the receipt to the computer. The action of placing an original receipt inside and then clicking scan will keep repeating. Both methods require manual intervention to adjust the position of the document in the scanning position on the device, which greatly reduces the overall scanning speed. Furthermore, the process of transmitting each document one by one during data scanning further reduces the overall efficiency of document acquisition. To address this, we propose a data scanning device to prevent document offset. Summary of the Invention

[0003] The purpose of this invention is to provide a data scanning device to prevent ticket misalignment, thereby solving the problems mentioned in the background art. The movement of the sleeve on the threaded rod drives the ticket that is falling up and down in the transmission box to move to the side of the positioning L-shaped rod. The entire distance sensor and scanning lens are used to position and move the ticket on the entire circular plate, avoiding the problem of manual intervention in the adjustment of the ticket on the scanning equipment, which would reduce the overall ticket data scanning rate. By placing multiple tickets on a shelf and moving the transmission box and transporting the clips, the problem of low data acquisition rate of the entire ticket scanning device is avoided. To achieve the above objectives, the present invention provides the following technical solution: A data scanning device for preventing ticket offset includes a placement platform, wherein a snap-fit ​​cover is fixed to the bottom inner wall of the placement platform by spot welding, and a positioning mechanism is installed on the top of the snap-fit ​​cover. The positioning mechanism includes a chuck, a sleeve, a first gear, a ball rod, and a movable plate. The top of the locking cover is movably connected to the chuck via a bearing. The bottom of the chuck, located inside the locking cover, is fixed to the sleeve by spot welding. The first gear is fixedly connected to one side of the sleeve. The ball rod is movably connected inside the sleeve. The top of the chuck is symmetrically movably connected to a movable rod via a bearing. A movable plate is movably connected to one side of the movable rod via a bearing. The movable plate has movable holes, and locking pins are symmetrically locked within the movable holes. One end of the snap-fit ​​post is fixed to a circular plate by spot welding, and a positioning L-shaped rod is fixed to the top of the circular plate by bolts. One end of the ball rod passes through the movable hole and is movably connected to the bottom of the circular plate. Locking sleeves are symmetrically installed on both sides of the positioning L-shaped rod. An electromagnet is installed at the bottom of the locking sleeve and correspondingly at the top of the circular plate. A distance sensor is installed on one side of the positioning L-shaped rod. A second spring is installed on the inner wall of one side of the locking sleeve, and an iron block is connected to one end of the second spring.

[0004] Furthermore, a first motor is fixed to one side of the snap-fit ​​cover by bolts, and a second gear is fixed to one end of the first motor through one side of the snap-fit ​​cover by spot welding. The second gear meshes with the first gear, and a snap-fit ​​sleeve is movably connected to one end of the ball rod.

[0005] Furthermore, the bottom inner wall of the placement platform is symmetrically equipped with a second motor via bolts, and a rotating rod is fixed to the output end of the second motor by spot welding. The outer wall of the snap-fit ​​cover is symmetrically provided with through slots, and a vertical rod is fixed to the outer wall of the snap-fit ​​cover by spot welding. The two ends of the vertical rod pass through the through slots and are movably connected to one end of the rotating rod.

[0006] Furthermore, the top of the placement platform is provided with a movable groove, and the inner wall of the movable groove is uniformly slidably connected with a telescopic column. One end of the telescopic column passes through the movable groove and extends into the placement platform. The inner wall of the placement platform is uniformly installed with a first spring corresponding to one end of the telescopic column, and the telescopic column abuts against the first spring. The outer wall of the telescopic column is fitted with a fixed limit sleeve inside the movable groove.

[0007] Furthermore, a threaded rod is symmetrically and movably connected to one side of the top of the placement platform via a bearing, and a sleeve is fitted on the threaded rod. Flattening rollers are symmetrically and movably connected to the inner walls of both sides of the sleeve via bearings.

[0008] Furthermore, a transmission box is bolted to one side of the placement platform, and a holding rack is installed on one side of the transmission box. A telescopic plate is slidably connected to one side of the holding rack. Electric push rods are symmetrically installed on both sides of the placement platform, and a crossbar is installed at one end of the electric push rod. A scanning lens is bolted to the bottom of the crossbar, and a receiving rack is installed on the other side of the placement platform.

[0009] A method for preventing document offset during data scanning: Step 1: Loading the invoices; The tickets stored on the rack on one side of the transmission box begin to move towards the top of the placement platform under the drive of the entire transmission box. At this time, the clamp on the threaded rod moves to the same side of the transmission box and comes into close contact with one side of the transmission box. The tickets that move out of the transmission box will enter the clamp. Due to the action of the two counter-rotating flat rollers in the entire clamp, the tickets are clamped while the threaded rod drives the clamp to move, so that the entire ticket moves a distance on the top of the placement platform. At this time, the entire flat roller moves again, bringing the entire ticket to the other side of the clamp and causing the ticket to fall to the top of the placement platform, so that one side of the ticket abuts against one side of the L-shaped positioning rod on the top of the disc. Step Two: Locating and Scanning the Ticket: At this time, the top scanning lens and the distance sensor work simultaneously. The entire scanning lens takes a picture of the overall position of the ticket on the platform, while the entire distance sensor begins to measure the ticket that is abutting on the positioning L-shaped rod. The angle between the side of the ticket that abuts against the positioning L-shaped rod and the side of the positioning L-shaped rod perpendicular to the circular plate is defined as Ja, where a is a natural number greater than 0. When Ja > 0, it indicates that the ticket has shifted on the entire placement platform. The shift status of the entire ticket is further determined based on the image captured by the scanning lens. At this time, the first motor inside the entire placement platform starts to work. After the second gear drives the first gear to rotate, the chuck and the circular plate connected to the chuck on one side of the entire sleeve column begin to rotate. The direction of rotation is according to the Ja opening direction, and the rotation angle of the circular plate is Ja, so that the entire positioning L-shaped rod is parallel to one side of the ticket. At the same time, the entire ticket side begins to contact the positioning L-shaped rod under the action of gravity. The electromagnet at the top of the entire circular plate is energized, causing the iron block inside the locking sleeve to descend and clamp one side of the ticket on the circular plate. At this time, the first motor rotates at the opposite angle, causing the entire circular plate to drive the ticket to reverse the angle Ja. When Ja = 0, the entire ticket is parallel to the placement platform. At this time, the electromagnet on the circular plate is energized, which fixes one side of the ticket to the circular plate. The entire disc moves according to the position of the ticket captured by the scanning lens. At the same time, the entire ticket appears directly below the scanning lens. Then, based on the ticket's state after the angle has been corrected by the pre-captured image of the scanning lens, the second motor rotates at a certain angle, causing the ticket on the disc to move directly below the scanning lens. The angle between the rotating rod parallel to the outlet side of the placement platform and one side of the vertical rod is defined as Gi, i≥0, and the initial value of Gi is 90°; The angle between the rotating rod perpendicular to the outlet side of the placement platform and the other side of the vertical rod is defined as Zi, i≥0, and the initial value of Zi is 90°; When the entire Gi > 90° and Zi > 90°, the entire vertical rod drives the ball on the snap-fit ​​sleeve to move in the southeast direction, while the circular plate connected to the other end of the ball moves in the northwest direction. When Gi < 90° and Zi > 90°, the entire vertical rod drives the ball on the snap-fit ​​sleeve to move in the northeast direction, while the circular plate connected to the other end of the ball moves in the southwest direction. When the entire Gi > 90° and Zi < 90°, the entire vertical rod drives the ball on the snap-fit ​​sleeve to move in the southwest direction, while the circular plate connected to the other end of the ball moves in the northeast direction. When Gi < 90° and Zi < 90°, the entire vertical rod drives the ball on the snap-fit ​​sleeve to move in the northwest direction, while the circular plate connected to the other end of the ball moves in the southeast direction. Step 3: Cutting the invoices: After the entire disc of tickets has been scanned, the first motor drives the circular plate at the top of the sleeve to rotate 180°, so that one side of the entire ticket faces the receiving rack. At this time, the two second motors rotate and drive the snap-fit ​​sleeve to move towards the transmission box, causing the circular plate to start moving towards the receiving rack. At the same time, the electromagnet detaches from the attraction of the iron block, and the tickets on the entire disc fall onto the receiving rack.

[0010] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the movement of the sleeve on the threaded rod moves the document, which is being moved up and down by the transmission box, to one side of the positioning L-shaped rod. The entire distance sensor and scanning lens then position the document on the circular plate. When angle adjustment is needed, the first motor on the snap-fit ​​cover rotates the entire sleeve, causing the circular plate at the bottom of the document to rotate. This corrects the angle of the document on the placement table, facilitating the scanning lens on the crossbeam to capture the document. Simultaneously, the iron block on the positioning L-shaped rod is connected to an electromagnet to fix one side of the document. The second motor then moves the ball on the snap-fit ​​sleeve, allowing the circular plate to move and shift omnidirectionally within the movable slot. This eliminates the need for manual movement of the document on the placement table, thus accelerating the scanning speed of the entire document.

[0011] In this invention, by placing multiple tickets on a shelf, and through the movement of the transmission box and the transport of the clips, and finally through a rotatable circular plate, the tickets are automatically loaded and unloaded, further improving the data acquisition rate of the entire ticket scanning device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the data scanning device for preventing document offset according to the present invention; Figure 2 This is a schematic cross-sectional view of the snap-fit ​​cover and placement platform of the present invention; Figure 3 This is a bottom view of the snap-fit ​​cover structure of the present invention; Figure 4 This is a top view of the connection between the chuck and the movable plate of the present invention; Figure 5 This is a schematic diagram of the side cross-sectional structure of the jacket of the present invention; Figure 6 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A; Figure 7 This is a schematic diagram of the cross-sectional structure of the locking sleeve of the present invention.

[0013] In the diagram: 1. Placement platform; 2. Transmission box; 3. Container rack; 4. Telescopic plate; 5. Receiving rack; 6. Electric push rod; 7. Cross frame; 8. Scanning lens; 9. Movable groove; 10. Threaded rod; 11. Jacket; 12. Leveling roller; 13. Clamping cover; 14. Positioning mechanism; 141. Chuck; 142. Sleeve column; 143. First gear; 144. Cue stick; 145. Movable rod; 146. Movable plate; 147. Snap-fit ​​post; 148. Movable hole; 15. First motor; 16. Second gear; 17. Second motor; 18. Rotating rod; 19. Vertical rod; 20. Through slot; 21. Snap-fit ​​sleeve; 22. Circular plate; 23. Telescopic post; 24. First spring; 25. Limiting sleeve; 26. Positioning L-shaped rod; 27. Locking sleeve; 28. Second spring; 29. ​​Iron block; 30. Electromagnet; 31. Distance sensor. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figure 1-7 The present invention provides a technical solution: Example 1:

[0016] For document scanning, traditional document scanners and flatbed scanners are widely used in offices and printing locations due to their low price. Document scanners can process single-sided paper in 6 seconds, while flatbed scanners take 10 seconds. However, flatbed scanners have a 50% higher image quality rate than document scanners. Both require manual intervention to adjust the position of the paper in the device. Therefore, in order to improve the scanning speed of the entire scanning device. like Figure 1As shown, a transmission box 2 is installed on one side of the entire data scanning device to prevent document misalignment. The transmission box 2 is similar to the automatic paper feeder in a sheet-fed scanner, capable of feeding the documents and other papers placed on the rack 3 and telescopic plate 4 one by one into one side of the placement table 1. To prevent the documents entering the placement table 1 from being misaligned or out of the range of the scanning lens 8, the clamps 11 on the threaded rods 10 on both sides of the placement table 1 need to intervene. The side view of the entire clamp 11 is shown in the figure. Figure 5 As shown, the inner wall of the sleeve 11 is symmetrically connected to the flattening rollers 12 via bearings. The two flattening rollers 12 rotate in opposite directions. When the ticket moves from one side of the transmission box 2 to the placement table 1, the sleeve 11 moves to one side of the transmission box 2, so that one side of the ticket enters the sleeve 11. The two flattening rollers 12 begin to clamp one side of the ticket. For tickets with a small area, the entire sleeve 11 needs to move the ticket a certain distance before the two flattening rollers 12 rotate again to discharge the ticket, so that the small ticket falls to one side of the positioning L-shaped rod 26 at the top of the circular plate 22. Tickets with a larger area fall directly to one side of the positioning L-shaped rod 26 through the rolling of the flattening rollers 12. After being flattened by the positioning L-shaped rod 26, the wrinkles of the ticket are reduced, which is beneficial for the subsequent acquisition of data by the scanning lens 8. After one side of the entire document contacts the positioning L-shaped rod 26 on the circular plate 22, if the entire document shifts, causing the scanning lens 8 to fail to fully capture the entire document, then... Figure 6 As shown, the entire ranging sensor 31 begins to measure the angle between the contact side and the non-contact side of the entire ticket and the positioning L-shaped rod 26. The angle between the contact side of the ticket and the positioning L-shaped rod 26 and the perpendicular side of the positioning L-shaped rod 26 and the circular plate 22 is defined as Ja, where a is a natural number greater than 0. When Ja > 0, it indicates that the ticket has shifted on the entire placement platform 1. Simultaneously, the shift status of the entire ticket is further determined based on the image captured by the scanning lens 8. The Ja data formed by the distance sensor 31 measuring the front of the positioning L-shaped rod 26 and the ticket is sent to the computer, which generates a corresponding deflection angle model. This model is then sent to the first motor 15 on one side of the locking cover 13 inside the placement platform 1. The first motor 15 then drives the second gear 16 to rotate. Figure 2 As shown, a positioning mechanism 14 is movably connected to one side of the entire chuck cover 13 via a bearing, and the first gear 143 inside the positioning mechanism 14 meshes with the second gear 16. The top view of the entire chuck 141 is as follows. Figure 4As shown, the top of the chuck 141 is symmetrically connected to a movable rod 145 via a bearing, and a movable plate 146 is movably connected to one end of the movable rod 145 via a bearing. The movable plate 146 has a movable hole 148, and a locking pin 147 from the bottom of the disc is locked in the movable hole 148, so that when the entire chuck 141 rotates, the entire disc will also rotate with the chuck 141. In order to make one side of the entire ticket parallel to one side of the positioning L-shaped rod 26, the first motor 15 drives the positioning L-shaped rod 26 to rotate Ja. During the rotation, in order to prevent the ticket from moving with the disc and causing the ticket to detach from one side of the positioning L-shaped rod 26, the entire surface of the placement platform 1 and the circular plate 22 is relatively smooth. If the document falling from one side of the entire clip 11 is parallel to one side of the entire positioning L-shaped rod 26, that is, when Ja=0, in order to move the entire document into the bottom range of the scanning lens 8, the specific operation is as follows: Figure 3 As shown, a through groove 20 is provided on the inner wall of the entire snap-fit ​​cover 13. A ball rod 144 is movably connected inside the entire sleeve column 142. One end of the ball rod 144 passes through the first gear 143 and is connected to the snap-fit ​​sleeve 21. A vertical rod 19 is fixed on the entire snap-fit ​​sleeve 21. The two sides of the vertical rod 19 are movably connected to the rotating rod 18 connected to one end of the second motor 17 on the inner wall of the bottom of the placement platform 1. like Figure 3 As shown, the angle between the rotating rod 18, which is parallel to the outlet side of the placement platform 1, and one side of the vertical rod 19 is defined as Gi (i≥0, and the initial value of Gi is 90°). The angle between the rotating rod 18 perpendicular to the outlet side of the placement platform 1 and the other side of the vertical rod 19 is defined as Zi (i≥0, and the initial value of Zi is 90°). When the entire Gi > 90° and Zi > 90°, the entire vertical rod 19 drives the ball rod 144 on the snap sleeve 21 to move in the southeast direction, while the circular plate 22 connected to the other end of the ball rod 144 moves in the northwest direction. When Gi < 90° and Zi > 90°, the entire vertical rod 19 drives the ball rod 144 on the snap sleeve 21 to move in the northeast direction, while the circular plate 22 connected to the other end of the ball rod 144 moves in the southwest direction. When the entire Gi > 90° and Zi < 90°, the entire vertical rod 19 drives the ball rod 144 on the snap sleeve 21 to move in the southwest direction, while the circular plate 22 connected to the other end of the ball rod 144 moves in the northeast direction. When Gi < 90° and Zi < 90°, the entire vertical rod 19 drives the ball rod 144 on the snap sleeve 21 to move in the northwest direction, while the circular plate 22 connected to the other end of the ball rod 144 moves in the southeast direction. In order for the entire positioning L-shaped rod 26 to be able to drive the ticket to move parallel within the movable slot 9, such as Figure 6-7 As shown, locking sleeves 27 are symmetrically installed on the entire positioning L-shaped rod 26. A second spring 28 is installed inside the entire locking sleeve 27. An iron block 29 is connected to one end of the second spring 28. When it is necessary to fix the ticket at the bottom of the positioning L-shaped rod 26, the electromagnet 30 installed on the circular plate 22 is energized. The magnetism generated by the electromagnet 30 will drive the iron block 29 inside the locking sleeve 27 to clamp the ticket on one side, so that the entire circular plate 22 can drive the ticket to move freely in the movable groove 9 until the ticket on one side of the positioning L-shaped rod 26 comes to the bottom of the scanning lens 8, completing the scanning of the ticket data. For the unloading operation of the scanned ticket on the circular plate 22, the first motor 15 drives the top circular plate 22 of the snap-fit ​​cover 13 to rotate 180°, so that one side of the ticket faces the receiving rack 5. At this time, the two second motors 17 rotate and drive the snap-fit ​​sleeve 21 to move towards the transmission box 2, causing the circular plate 22 to start moving towards the receiving rack 5. At the same time, the electromagnet 30 is released from the attraction of the iron block 29, and the ticket on the entire disc falls onto the receiving rack 5. Electric push rods 6 are installed on both sides of the entire placement platform 1, and a crossbar 7 is installed at one end of the electric push rod 6. A scanning lens 8 is fixed at the bottom of the crossbar 7. The telescopic electric push rod 6 drives the scanning lens 8 to move up and down, which, together with the movement of the document on the circular plate 22, allows for better and faster scanning of the document content, improving the overall document scanning speed. At the same time, the acquisition of data obtained from the scanning image of the scanning lens 8 without being affected by the positioning L-shaped rod 26 is also achieved.

[0017] Example 2:

[0018] To expand the anti-displacement range of the entire circular plate 22, telescopic columns 23 are uniformly slidably connected within the entire movable groove 9. One end of the telescopic column 23 abuts against the first spring 24 installed in the placement platform 1. At the same time, a limit sleeve 25 is also installed on the telescopic column 23, which increases the range of movement of the circular plate 22 and the ticket. When the circular plate 22 moves to one side, the first spring 24 will push the limit sleeve 25 on the telescopic column 23 behind the circular plate 22, causing the limit sleeve 25 to move the remaining area of ​​the ticket that is not on the disc.

[0019] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0020] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0021] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A data scanning device for preventing document offset, comprising a placement platform (1), characterized in that: The bottom inner wall of the placement platform (1) is fixed with a snap-fit ​​cover (13) by spot welding, and a positioning mechanism (14) is installed on the top of the snap-fit ​​cover (13). The positioning mechanism (14) includes a chuck (141), a sleeve (142), a first gear (143), a ball (144), and a movable plate (146). The top of the snap-fit ​​cover (13) is movably connected to the chuck (141) via a bearing. The bottom of the chuck (141) and inside the snap-fit ​​cover (13) is fixed to the sleeve (142) by spot welding. The first gear (143) is fixedly connected to one side of the sleeve (142). The ball (144) is movably connected inside the sleeve (142). The top of the chuck (141) is symmetrically movably connected to the movable rod (145) via a bearing. The movable plate (146) is movably connected to one side of the movable rod (145) via a bearing. The movable plate (146) has a movable hole (148) and snap-fit ​​pins (147) are symmetrically snapped into the movable hole (148). One end of the snap-fit ​​post (147) is fixed to a circular plate (22) by spot welding, and a positioning L-shaped rod (26) is fixed to the top of the circular plate (22) by bolts. One end of the ball rod (144) passes through the movable hole (148) and is movably connected to the bottom of the circular plate (22). Lock sleeves (27) are symmetrically installed on both sides of the positioning L-shaped rod (26). Electromagnets (30) are installed at the bottom of the lock sleeves (27) and at the top of the circular plate (22). A distance sensor (31) is installed on one side of the positioning L-shaped rod (26). A second spring (28) is installed on the inner wall of one side of the lock sleeve (27), and an iron block (29) is connected to one end of the second spring (28).

2. The data scanning device for preventing document offset according to claim 1, characterized in that: The first motor (15) is fixed to one side of the snap-fit ​​cover (13) by bolts, and a second gear (16) is fixed to one end of the first motor (15) through the snap-fit ​​cover (13) by spot welding. The second gear (16) meshes with the first gear (143), and a snap-fit ​​sleeve (21) is movably connected to one end of the ball rod (144).

3. The data scanning device for preventing document offset according to claim 2, characterized in that: The bottom inner wall of the placement platform (1) is symmetrically equipped with a second motor (17) by bolts, and a rotating rod (18) is fixed to the output end of the second motor (17) by spot welding. The outer wall of the snap-fit ​​cover (13) is symmetrically provided with through slots (20), and the outer wall of the snap-fit ​​cover (13) is fixed with a vertical rod (19) by spot welding. The two ends of the vertical rod (19) pass through the through slots (20) and are movably connected to one end of the rotating rod (18).

4. The data scanning device for preventing document offset according to claim 3, characterized in that: The top of the placement platform (1) is provided with a movable groove (9). The inner wall of the movable groove (9) is evenly connected with a telescopic column (23). One end of the telescopic column (23) passes through the movable groove (9) and extends into the placement platform (1). The inner wall of the placement platform (1) is evenly installed with a first spring (24) corresponding to one end of the telescopic column (23). The telescopic column (23) abuts against the first spring (24). The outer wall of the telescopic column (23) is fitted with a fixed limit sleeve (25) inside the movable groove (9).

5. The data scanning device for preventing document offset according to claim 1, characterized in that: The top of one side of the placement platform (1) is symmetrically connected to a threaded rod (10) via a bearing, and a sleeve (11) is fitted on the threaded rod (10). The inner walls of both sides of the sleeve (11) are symmetrically connected to a leveling roller (12) via a bearing.

6. The data scanning device for preventing document offset according to claim 1, characterized in that: A transmission box (2) is fixed to one side of the placement platform (1) by bolts, and a holding rack (3) is installed on one side of the transmission box (2). A telescopic plate (4) is slidably connected to one side of the holding rack (3). Electric push rods (6) are symmetrically installed on both sides of the placement platform (1), and a cross frame (7) is installed at one end of the electric push rod (6). A scanning lens (8) is fixed to the bottom of the cross frame (7) by bolts. A receiving rack (5) is installed on the other side of the placement platform (1).

7. A data scanning method for preventing document offset as described in any one of claims 1-6, characterized in that: Includes the following steps: Step 1: Loading the invoices; The bills stored on the rack (3) on one side of the transmission box (2) begin to move towards the top of the placement platform (1) under the drive of the entire transmission box (2). At this time, the clamp (11) on the threaded rod (10) moves to the same side of the transmission box (2) and is pressed against one side of the transmission box (2). The bills that move out of the transmission box (2) will enter the clamp (11). Due to the action of the two counter-rotating flat rollers (12) in the entire clamp (11), the bills are clamped while the threaded rod (10) drives the clamp (11) to move, so that the entire bills move a distance on the top of the placement platform (1). At this time, the entire flat roller (12) moves again, driving the entire bills to the other side of the clamp (11) and causing the bills to fall onto the top of the placement platform (1), so that one side of the bills abuts against one side of the L-shaped rod (26) at the top of the disc. Step Two: Locating and Scanning the Ticket: At this time, the top scanning lens (8) and the distance sensor (31) work simultaneously. The entire scanning lens (8) takes pictures of the overall position of the ticket on the placement platform (1), while the entire distance sensor (31) starts to measure the ticket that is abutting on the positioning L-shaped rod (26). The angle between the side of the ticket that abuts against the positioning L-shaped rod (26) and the side of the positioning L-shaped rod (26) perpendicular to the circular plate (22) is defined as Ja, where a is a natural number greater than 0; When Ja > 0, it indicates that the ticket has shifted on the entire placement platform (1), and the shift status of the entire ticket is further determined based on the image captured by the scanning lens (8). At this time, the first motor (15) inside the entire placement platform (1) starts to work. After the second gear (16) drives the first gear (143) to rotate, the chuck (141) connected to one side of the entire sleeve column (142) and the circular plate (22) connected to the chuck (141) start to rotate. The rotation direction is based on the Ja opening direction. The rotation angle of the circular plate (22) is Ja, so that the entire positioning L-shaped rod (26) is parallel to one side of the ticket. At the same time, the entire ticket side begins to contact the positioning L-shaped rod (26) under the action of gravity. The electromagnet (30) at the top of the entire circular plate (22) is energized, causing the iron block (29) inside the lock sleeve (27) to descend and clamp one side of the ticket on the circular plate (22). The first motor (15) rotates at the opposite angle at this time, so that the entire circular plate (22) drives the ticket to reverse the angle Ja. When Ja = 0, the entire ticket is parallel to the placement platform (1). At this time, the electromagnet (30) on the circular plate (22) is energized, so that the entire iron block (29) fixes one side of the ticket on the circular plate (22) and moves the entire disc according to the position of the ticket captured by the scanning lens (8). At the same time, the entire ticket appears directly below the scanning lens (8). At this time, the second motor (17) rotates a certain angle according to the ticket state after the angle correction is captured in advance by the scanning lens (8), so that the ticket on the disc moves directly below the scanning lens (8). The angle between the rotating rod (18) parallel to the outlet side of the placement platform (1) and one side of the vertical rod (19) is defined as Gi, i≥0, and the initial value of Gi is 90°; The angle between the rotating rod (18) perpendicular to the outlet side of the placement platform (1) and the other side of the vertical rod (19) is defined as Zi, i≥0, and the initial value of Zi is 90°; When the entire Gi > 90° and Zi > 90°, the entire vertical rod (19) drives the ball rod (144) on the snap sleeve (21) to move in the southeast direction, while the circular plate (22) connected to the other end of the ball rod (144) moves in the northwest direction; When the entire Gi < 90° and Zi > 90°, the entire vertical rod (19) drives the ball rod (144) on the snap sleeve (21) to move in the northeast direction, while the circular plate (22) connected to the other end of the ball rod (144) moves in the southwest direction; When the entire Gi > 90° and Zi < 90°, the entire vertical rod (19) drives the ball rod (144) on the snap sleeve (21) to move in the southwest direction, while the circular plate (22) connected to the other end of the ball rod (144) moves in the northeast direction; When the entire Gi < 90° and Zi < 90°, the entire vertical rod (19) drives the ball rod (144) on the snap sleeve (21) to move in the northwest direction, while the circular plate (22) connected to the other end of the ball rod (144) moves in the southeast direction; Step 3: Cutting the invoices: After the entire disc is scanned, the first motor (15) drives the circular plate (22) at the top of the entire sleeve column (142) to rotate 180°, so that one side of the entire disc faces the receiving rack (5). At this time, the two second motors (17) rotate and drive the snap-fit ​​sleeve (21) to move towards the transmission box (2), causing the circular plate (22) to start moving towards the receiving rack (5). At the same time, the entire electromagnet (30) is released from the attraction of the iron block (29), and the disc falls onto the receiving rack (5).

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