Automatic book sorting device

Abstract

The invention relates to the technical field of book management, and discloses an automatic book sorting device. Comprising a recognition machine for recognizing book category information, a conveying mechanism located at the downstream of the recognition machine, a plurality of receiving boxes arranged on the side of the conveying mechanism and a plurality of transferring mechanisms for transferring books from the conveying mechanism to the receiving boxes of the corresponding categories. The conveying mechanism comprises a conveying frame and a plurality of conveying rollers rotationally installed on the conveying frame at equal intervals. The transferring mechanism comprises a plurality of rows of transferring wheels, an installation frame for installing the transferring wheels, a bearing frame for bearing the installation frame and an air cylinder for driving the installation frame to ascend and descend. The conveying direction of the transfer wheel is perpendicular to the conveying direction of the conveying roller. The receiving box comprises a box body, a receiving plate movably installed in the box body, a driving assembly driving the receiving plate to move up and down, and a range finder installed on the box body and used for measuring the book stacking height. And collision damage of book corners and disordered staggering of books are effectively prevented.

Description

Technical Field

[0001] This invention belongs to the field of book management technology, specifically relating to an automatic book sorting device. Background Technology

[0002] Libraries, archives, and large book distribution centers handle the return, classification, and shelving of massive amounts of books in their daily operations. To improve efficiency, automated book sorting devices have become indispensable. A typical existing automated book sorting device usually includes: an identification unit for scanning and identifying book information (such as RFID or barcodes), a main conveyor belt, and multiple sorting bins (or compartments) arranged laterally along the main conveyor belt. Its workflow is as follows: after the identification unit determines the book's category, when the book travels along the main conveyor belt to the sorting point above or to the side of the corresponding target bin, a sorting actuator (such as a lever, pusher, or tilting guide) is triggered, pushing the book laterally off the main conveyor path and allowing it to fall into the bin below under gravity, thus completing the sorting by category.

[0003] However, the applicant discovered that this "push-drop" sorting method has significant technical flaws, directly affecting the efficiency of post-sorting operations and the long-term preservation of books, specifically in the following two aspects:

[0004] First, the books are in a disorderly and chaotic state inside the boxes, significantly increasing the workload for subsequent manual processing. Because the books fall into the boxes from a certain height via free fall or projectile motion, their landing posture (spine orientation, cover orientation) is completely random and uncontrollable. Furthermore, the books that fall one after another collide and pile up, easily creating a chaotic situation of overlapping, tilting, or even toppling over. After sorting, staff cannot directly move the entire box of books to the corresponding shelves for bulk shelving; instead, they must spend a significant amount of time removing each book from the chaotic pile, adjusting its orientation, and stacking it neatly before shelving can begin.

[0005] Secondly, this sorting method poses a high risk of physical damage to books, especially old, hardcover, or fragile ones. Books, particularly their corners, spines, and covers, are subjected to direct, rigid impacts with the bottom of the box or other books already inside during a free fall. This impact can cause corners to curl, covers to scratch, spines to crack, or binding to loosen. The cumulative effect of these minor damages over time can significantly shorten the lifespan of books, a problem particularly pronounced for valuable library collections or frequently borrowed popular books. While existing technologies have attempted to add simple cushioning pads to the bottom of the box, they cannot solve the problem of lateral impacts due to uncontrollable falling posture, or the problem of multiple books colliding with each other when falling sequentially, thus offering limited protection.

[0006] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Summary of the Invention

[0007] The purpose of this invention is to provide an automatic book sorting device to solve the problems mentioned in the background art.

[0008] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0009] An automatic book sorting device includes an identification machine for recognizing book category information, a conveying mechanism downstream of the identification machine, multiple receiving boxes disposed on the side of the conveying mechanism, and multiple transfer mechanisms for transferring books from the conveying mechanism to the receiving boxes of corresponding categories. The conveying mechanism includes a conveying frame and multiple conveying rollers rotatably mounted on the conveying frame at equal intervals. The transfer mechanism includes multiple rows of transfer wheels, a mounting frame for mounting the transfer wheels, a support frame for supporting the mounting frame, and a cylinder for driving the mounting frame to rise and fall. The conveying direction of the transfer wheels is perpendicular to the conveying direction of the conveying rollers. The receiving box includes a box body, a receiving plate movably mounted inside the box body, a driving assembly for driving the receiving plate to move up and down, and a rangefinder mounted on the box body for measuring the stacking height of books.

[0010] Furthermore, it also includes a slide disposed between the receiving box and the conveyor frame. The higher end of the slide is fixedly mounted on the conveyor frame, and the lower end has supporting feet at its bottom. The receiving box is located below the lower end of the slide. This eliminates the possibility of books suddenly falling or losing control at the end of the transfer, ensuring the continuity and stability of the transfer process.

[0011] Furthermore, multiple guide rollers are rotatably installed on the slide, and these guide rollers are arranged at equal intervals along the sliding direction of the slide. By using the guide rollers to convert sliding friction into rolling friction, the resistance of the book sliding down is greatly reduced, allowing the book to slide smoothly by its own weight, while avoiding frictional damage between the book cover and the surface of the slide.

[0012] Furthermore, a mounting cavity for installing the drive assembly is formed within one side wall of the housing. The drive assembly includes an adjusting screw vertically mounted within the mounting cavity, a worm gear fixedly sleeved on the adjusting screw, a worm gear horizontally mounted within the mounting cavity, and a first motor driving the worm gear to rotate. A threaded sleeve that threadedly engages with the adjusting screw is installed on one side of the receiving plate. Its worm gear transmission has a self-locking characteristic, allowing the receiving plate to be locked at any position, ensuring it will not slide down on its own when bearing the weight of books, thus guaranteeing stability and safety during the stacking process. Simultaneously, this structure integrates the drive components into the side wall of the housing, saving internal space.

[0013] Furthermore, the box body is also equipped with multiple first guide rods, and the receiving plate has first guide holes that cooperate with the first guide rods. This provides precise vertical guidance for the lifting and lowering of the receiving plate, preventing horizontal deviation or rotation during the lifting and lowering process, ensuring that the receiving plate always remains horizontal, thereby making the books stacked flat.

[0014] Furthermore, the box is also equipped with a bracket for mounting the rangefinder, which is rotatably mounted on the top of the box. When books need to be removed from the receiving box for placement, the rangefinder is rotated to the outside to avoid interference.

[0015] Furthermore, the mounting frame includes a mounting plate and multiple rows of equally spaced mounting blocks arranged on the mounting plate. Each mounting block has mounting grooves for mounting the transfer wheels, and each mounting groove holds multiple transfer wheels, which are equally spaced along the conveying direction of the transfer wheels. The width of each mounting block is smaller than the distance between adjacent conveyor rollers. This ensures that the transfer wheels can move freely up and down between the conveyor rollers. The design of multiple rows of equally spaced transfer wheels provides uniform and continuous support for the bottom of the book, preventing the book from bending or getting stuck during lateral transfer.

[0016] Furthermore, the support frame includes a support plate and support columns located at the bottom of the support plate. Multiple second guide rods are provided at the top of the support plate, and multiple second guide holes that mate with the second guide rods are formed on the mounting plate. The cylinder body is fixedly installed at the bottom of the support plate, and the piston rod is fixedly connected to the bottom of the mounting plate. This ensures the stability of the vertical lifting and lowering of the transfer wheel driven by the mounting frame, avoiding interference between the transfer wheel and the conveyor roller or uneven force on the books due to the tilt of the mounting frame. The cylinder drive method is simple, reliable, and has a fast response speed.

[0017] Furthermore, the recognition machine includes a housing, a drive roller and a driven roller installed within the housing, and a scanning stage is also provided on the housing. The drive roller and the driven roller cooperate to transport books from the scanning stage to the conveying mechanism. The driven roller is located above the drive roller and is movably installed within the housing. A groove for mounting the driven roller is formed on the inner wall of the housing, and a slider is slidably installed within the groove. The driven roller is rotatably mounted on the slider. A stop spring is installed within the groove, with one end fixedly connected to the inner top wall of the groove and the other end fixedly connected to the slider. The combination of the elastically clamping drive roller and driven roller allows for adaptive clamping of books of different thicknesses.

[0018] Furthermore, a second motor is also installed on the conveyor frame to drive the conveyor rollers to rotate.

[0019] With the above structure, the automatic book sorting device of this invention, compared with the prior art, combines vertically arranged conveyor rollers and transfer wheels, and uses a cylinder to raise the transfer wheels to contact the bottom surface of the books, so that the movement direction of the books changes smoothly and continuously by 90 degrees. This process avoids the instantaneous impact of traditional levers or push plates, allowing the books to slide towards the receiving box with a relatively stable posture. The receiving box is equipped with a liftable receiving plate controlled by a drive component. The receiving plate can always be kept at a height close to the falling position of the books to receive them, achieving a "soft landing" and almost eliminating the drop height. As the books are piled up, the rangefinder monitors the height in real time and controls the receiving plate to descend synchronously, thereby ensuring that each book can fall smoothly and neatly on the top surface of the stacked books, effectively preventing collision damage to the corners of the books and messy interleaving between books. Attached Figure Description

[0020] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 for Figure 1 Top view;

[0023] Figure 3 for Figure 1 Side view;

[0024] Figure 4 This is a schematic diagram of the transfer mechanism in this invention;

[0025] Figure 5 This is a schematic diagram of the receiving box in this invention;

[0026] Figure 6 for Figure 5 A cross-sectional schematic diagram;

[0027] Figure 7 for Figure 6 A magnified schematic diagram of the local structure at point A;

[0028] Figure 8 This is a schematic diagram of the slide structure in this invention;

[0029] Figure 9 This is a cross-sectional schematic diagram of the identification machine in this invention.

[0030] The symbols of the main components are explained as follows: Identifier 1, Housing 11, Scanning Table 111, Slide 112, Drive Roller 12, Driven Roller 13, Push Spring 14, Conveying Mechanism 2, Conveying Frame 21, Conveying Roller 22, Second Motor 23, Receiving Box 3, Box Body 31, Mounting Cavity 311, First Guide Rod 312, Bracket 313, Receiving Plate 32, Threaded Sleeve 321, First Guide Hole 322, Drive Assembly 33, Adjusting Screw 331, Worm Gear 332, Worm 333, First Motor 334, Rangefinder 34, Transfer Mechanism 4, Transfer Wheel 41, Mounting Frame 42, Mounting Plate 421, Second Guide Hole 4211, Mounting Block 422, Mounting Groove 423, Bearing Frame 43, Bearing Plate 431, Second Guide Rod 4311, Bearing Column 432, Cylinder 44, Slide 5, Support Foot 51, Guide Roller 52. Detailed Implementation

[0031] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0032] like Figures 1-9As shown, this invention relates to an automatic book sorting device, comprising an identification machine 1 for recognizing book category information, a conveying mechanism 2 located downstream of the identification machine 1, multiple receiving boxes 3 disposed on the side of the conveying mechanism 2, and multiple transfer mechanisms 4 for transferring books from the conveying mechanism 2 to the corresponding receiving boxes 3. The multiple transfer mechanisms 4 and the multiple receiving boxes 3 are all equally spaced along the conveying direction of the conveying mechanism 2, and one transfer mechanism 4 corresponds to one or two receiving boxes 3. If it corresponds to two receiving boxes 3, the two receiving boxes 3 are located on opposite sides of the transfer mechanism 4. The conveying mechanism 2 includes a conveyor frame 2. 1. A series of conveying rollers 22 are rotatably mounted on the conveying frame 21 at equal intervals. The transfer mechanism 4 includes multiple rows of transfer wheels 41, a mounting frame 42 for mounting the transfer wheels 41, a support frame 43 for supporting the mounting frame 42, and a cylinder 44 for driving the mounting frame 42 to rise and fall. The conveying direction of the transfer wheels 41 is perpendicular to the conveying direction of the conveying rollers 22. The receiving box 3 includes a box body 31, a receiving plate 32 movably mounted in the box body 31, a drive assembly 33 for driving the receiving plate 32 to move up and down, and a rangefinder 34 mounted on the box body 31 for measuring the stacking height of books. The rangefinder 34 uses ultrasonic ranging or laser ranging. Specifically, the recognition machine 1 includes a housing 11, a drive roller 12 and a driven roller 13 installed inside the housing 11, and a scanning table 111 is also provided on the housing 11. The drive roller 12 and the driven roller 13 cooperate to transport the book from the scanning table 111 to the conveying mechanism 2. The driven roller 13 is located above the drive roller 12 and is movably installed inside the housing 11. A groove 112 for installing the driven roller 13 is formed on the inner wall of the housing 11. A slider is slidably installed in the groove 112, and the driven roller 13 is rotatably installed on the slider. A stop spring 14 is installed in the groove 112. One end of the stop spring 14 is fixedly connected to the inner top wall of the groove 112, and the other end is fixedly connected to the slider. When a book is placed on the scanning table 111, after scanning and reading the information, the spine of the book is pushed between the drive roller 12 and the driven roller 13. The drive roller 12 rotates, and under the action of the abutment spring 14, the driven roller 13 can adapt to books of different thicknesses and apply appropriate clamping force to ensure that the book is stably clamped and transported to the conveyor mechanism 2. In addition, a second motor 23 is also installed on the conveyor frame 21 to drive the conveyor roller 22 to rotate. In order to ensure that the conveyor rollers 22 rotate at the same speed, the conveyor rollers 22 are connected by chain drive.

[0033] In this embodiment, a slide 5 is also included, positioned between the receiving box 3 and the conveyor frame 21. The higher end of the slide 5 is fixed to the conveyor frame 21 by bolts or welding, while the lower end has supporting feet 51 at its bottom. The receiving box is located below the lower end of the slide 5. Multiple guide rollers 52 are rotatably mounted on the slide 5, arranged at equal intervals along the sliding direction of the slide 5. By using the guide rollers 52 to convert sliding friction into rolling friction, the resistance to the book's descent is greatly reduced, allowing the book to slide smoothly under its own weight, while also preventing frictional damage between the book cover and the slide surface.

[0034] In this embodiment, a mounting cavity 311 for mounting the drive assembly 33 is formed in one side wall of the housing 31. The drive assembly 33 includes an adjusting screw 331 vertically mounted in the mounting cavity 311, a worm gear 332 fixedly sleeved on the adjusting screw 331, a worm 333 horizontally mounted in the mounting cavity 311, and a first motor 334 for driving the worm 333 to rotate. A threaded sleeve 321 that is threadedly engaged with the adjusting screw 331 is mounted on one side of the receiving plate 32. The worm gear 332 and worm 333 transmission has a self-locking characteristic, which can lock the receiving plate 32 at any position, ensuring that it will not slide down on its own when bearing the weight of books, thus ensuring the stability and safety of the stacking process. At the same time, this structure integrates the drive components into the side wall of the housing 31, saving internal space.

[0035] To ensure the receiving plate 32 remains horizontal, thus flattening the stacked books, multiple first guide rods 312 are installed inside the housing 31. The receiving plate 32 has first guide holes 322 that mate with the first guide rods 312. Initially, the controller drives the first motor 334 to raise the receiving plate 32 to its highest position (near the exit of the slide 5). When the first book slides into the housing 31, it gently lands on the receiving plate 32. At this time, the rangefinder 34 measures the distance H from the top of the stack of books to itself in real time. The controller has a preset relationship between the target height of the receiving plate 32 and the measured distance. When a book falls in, the controller detects a decrease in distance H (indicating an increase in height) and immediately sends a command to the first motor 334 to drive the worm gear 333 to rotate, which in turn rotates the worm wheel 332 and the adjusting screw 331, causing the receiving plate 32 to descend precisely by a small distance Δh (for example, set to be slightly less than the thickness of the thinnest book) under the constraint of the guide rods. Subsequently, with each book falling in, the controller repeats this "measurement-judgment-drive" process, ensuring that the top of the receiving plate 32 maintains a fixed and small drop between itself and the exit of the slide 5. Therefore, each subsequent book is almost "placed" on the already neatly stacked pile of books. The self-locking characteristics of the worm gear 332 and worm 333 ensure that the receiving plate 32 remains firmly locked in position when the drive stops, providing stable load-bearing capacity. When the book box is nearly full or the sorting batch is finished, the controller can control the receiving plate 32 to descend to the bottom of the box.

[0036] In this embodiment, the housing 31 is also equipped with a bracket 313 for mounting a rangefinder 34, which is rotatably mounted on the top of the housing 31. When books need to be removed from the receiving box 3 for placement, the rangefinder 34 is rotated to the outside to avoid interference. Specifically, whenever a receiving box 3 is full, an AGV can transfer the receiving box 3 to a designated location, where the librarian can place the books from the box 31 onto the bookshelf.

[0037] In this embodiment, the mounting frame 42 includes a mounting plate 421 and multiple rows of mounting blocks 422 evenly spaced on the mounting plate 421. Each mounting block 422 has mounting grooves 423 for mounting transfer wheels 41. Each mounting groove 423 is fitted with multiple transfer wheels 41, and the multiple transfer wheels 41 are evenly spaced along the conveying direction of the transfer wheels 41. The width of the mounting block 422 is smaller than the distance between adjacent conveyor rollers 22. This ensures that the transfer wheels 41 can move freely up and down between the conveyor rollers 22. The design of multiple rows of equally spaced transfer wheels 41 provides uniform and continuous support for the bottom of the book, preventing the book from bending or getting stuck during lateral transfer. The support frame 43 includes a support plate 431 and support columns 432 located at the bottom of the support plate 431. The top of the support plate 431 is provided with multiple second guide rods 4311, and the mounting plate 421 has multiple second guide holes 4211 that cooperate with the second guide rods 4311. The cylinder body of the cylinder 44 is fixedly installed at the bottom of the support plate 431, and the piston rod is fixedly connected to the bottom of the mounting plate 421. This ensures the stability of the vertical lifting and lowering of the transfer wheels 41 driven by the mounting frame 42, and avoids interference between the transfer wheels 41 and the conveyor roller 22 or uneven force on the book due to the tilt of the mounting frame 42. The cylinder 44 has a simple and reliable driving method and a fast response speed. When the controller determines that the book needs to be sorted to the Nth receiving box 3 based on the identification information, the book is transported on the conveyor roller 22 to the corresponding position of the Nth transfer mechanism 4. At this time, the controller issues a command, the cylinder 44 at this station actuates, the piston rod extends, and pushes the mounting bracket 42 to rise smoothly along the second guide rod 4311. The mounting block 422 and the transfer wheel 41 rise from the gap between the conveyor rollers 22, so that the top of the transfer wheel 41 is higher than the top surface of the conveyor rollers 22, thereby lifting the book and moving the book to one side of the receiving box 3.

[0038] The control core of the entire system (not shown in the figure, such as a PLC or industrial computer) coordinates all the above actions: it receives the book classification information from the identification machine 1, controls the start, stop and speed of the conveyor mechanism 2, triggers the cylinder 44 of the corresponding transfer mechanism 4 at a precise moment, continuously processes the rangefinder 34 signals of each receiving box 3, and independently controls the first motor 334 of each drive component 33, thereby realizing fully automatic, high-loss-preservation and neat book sorting.

[0039] The working principle of this invention is as follows: After being classified by the identification machine 1, the books are conveyed by the conveyor roller 22. When they reach the target station, the corresponding transfer mechanism 4 rises, and the books are laterally exported through the cooperation of the conveyor roller 22 and the transfer wheel 41. The books are buffered and guided by the slide 5 and slide into the target receiving box 3. Under the control of the rangefinder 34 and the drive component 33, the receiving plate 32 in the receiving box 3 always maintains the optimal receiving height with the falling books, so that the books are stacked smoothly and neatly layer by layer. When the receiving box is full of books, the receiving box is transferred away by the AGV.

[0040] The above provides a detailed description of an automatic book sorting device provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An automatic book sorting device, comprising an identification machine (1) for identifying book category information, a conveying mechanism (2) located downstream of the identification machine (1), multiple receiving boxes (3) disposed on the side of the conveying mechanism (2), and multiple transfer mechanisms (4) for transferring books from the conveying mechanism (2) to the receiving boxes (3) of corresponding categories, characterized in that: The conveying mechanism (2) includes a conveying frame (21) and multiple conveying rollers (22) rotatably mounted on the conveying frame (21) at equal intervals. The transfer mechanism (4) includes multiple rows of transfer wheels (41), a mounting frame (42) for mounting the transfer wheels (41), a support frame (43) for supporting the mounting frame (42), and a cylinder (44) for driving the mounting frame (42) to rise and fall. The conveying direction of the transfer wheels (41) is perpendicular to the conveying direction of the conveying rollers (22). The receiving box (3) includes a box body (31), a receiving plate (32) movably mounted in the box body (31), a drive assembly (33) for driving the receiving plate (32) to move up and down, and a rangefinder (34) mounted on the box body (31) for measuring the stacking height of books.

2. The automatic book sorting device according to claim 1, characterized in that: It also includes a slide (5) set between the receiving box (3) and the conveyor frame (21), with the higher end of the slide (5) fixedly mounted on the conveyor frame (21) and the lower end having a support foot (51) at the bottom; the receiving box (3) is located below the lower end of the slide (5).

3. The automatic book sorting device according to claim 2, characterized in that: Multiple guide rollers (52) are rotatably installed on the slide (5), and the multiple guide rollers (52) are arranged at equal intervals along the sliding direction of the slide (5).

4. The automatic book sorting device according to claim 1, characterized in that: The housing (31) has a mounting cavity (311) formed in one side wall for mounting the drive assembly (33); the drive assembly (33) includes an adjusting screw (331) mounted vertically in the mounting cavity (311), a worm gear (332) fixedly sleeved on the adjusting screw (331), a worm (333) mounted horizontally in the mounting cavity (311), and a first motor (334) for driving the worm (333) to rotate; a threaded sleeve (321) that is threadedly engaged with the adjusting screw (331) is installed on one side of the receiving plate (32).

5. The automatic book sorting device according to claim 4, characterized in that: The box (31) is also provided with a plurality of first guide rods (312), and the receiving plate (32) is provided with a first guide hole (322) that cooperates with the first guide rods (312).

6. The automatic book sorting device according to claim 5, characterized in that: The housing (31) is also provided with a bracket (313) for mounting the rangefinder (34), and the bracket (313) is rotatably mounted on the top of the housing (31).

7. The automatic book sorting device according to claim 1, characterized in that: The mounting frame (42) includes a mounting plate (421) and multiple rows of mounting blocks (422) arranged at equal intervals on the mounting plate (421). The mounting blocks (422) have mounting grooves (423) for mounting the transfer wheels (41). Each mounting groove (423) is equipped with multiple transfer wheels (41), and the multiple transfer wheels (41) are arranged at equal intervals along the conveying direction of the transfer wheels (41). The width of the mounting block (422) is smaller than the distance between adjacent conveying rollers (22).

8. The automatic book sorting device according to claim 7, characterized in that: The support frame (43) includes a support plate (431) and a support column (432) located at the bottom of the support plate (431). The top of the support plate (431) is provided with multiple second guide rods (4311). The mounting plate (421) has multiple second guide holes (4211) that cooperate with the second guide rods (4311). The cylinder body of the cylinder (44) is fixedly installed at the bottom of the support plate (431), and the piston rod is fixedly connected to the bottom of the mounting plate (421).

9. The automatic book sorting device according to claim 1, characterized in that: The recognition machine (1) includes a housing (11), a drive roller (12) installed inside the housing (11), and a driven roller (13). The housing (11) is also provided with a scanning table (111). The drive roller (12) and the driven roller (13) cooperate to transport the book from the scanning table (111) to the conveying mechanism (2). The driven roller (13) is located above the drive roller (12). The driven roller (13) is movably installed inside the housing (11). A groove (112) for installing the driven roller (13) is formed on the inner wall of the housing (11). A slider is slidably installed in the groove (112). The driven roller (13) is rotatably installed on the slider. A push spring (14) is installed in the groove (112). One end of the push spring (14) is fixedly connected to the inner top wall of the groove (112), and the other end is fixedly connected to the slider.

10. The automatic book sorting device according to claim 1, characterized in that: The conveyor frame (21) is also equipped with a second motor (23) that drives the conveyor roller (22) to rotate.

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