Book stacking mechanism

Abstract

The book stacking mechanism comprises a rack, the rack comprises a conveying platform and a stacking platform which are vertically arranged at intervals, the stacking platform is configured to stack books falling from the tail end of an input platform, the stacking platform can vertically slide relative to the rack, and a lifting assembly is arranged on the rack; the lifting assembly is configured to drive the stacking platform to ascend and descend. The book stacking mechanism has an initial state and a stacking state which can be switched, in the initial state, no books are stacked on the stacking platform, and a height difference is reserved between the surface of the stacking platform and the surface of the conveying platform; when the books on the conveying platform fall into the stacking platform, the book stacking mechanism enters a stacking state, and every time a book is stacked on the stacking platform, the lifting assembly drives the stacking platform to descend by a preset height, so that a height difference always exists between the surface of the book on the stacking platform and the surface of the conveying platform; and when the number of the books on the stacking platform reaches a preset number, the lifting assembly drives the stacking platform to rise to an initial state, and the stacking platform conveys out a book pile formed by stacking.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing technical field, concretely relates to book stacking mechanism. BACKGROUND

[0002] Book refers to the book and character that bind into a volume, and the production process of book mainly includes plate making, printing, binding, packaging and stacking etc. Because the thickness of single volume book is thin, after the book completes the binding operation, needs to stack the multiple volumes of books along the height into the book stack, thereby facilitating the subsequent packaging operation.

[0003] In order to make the book that completes the binding on the production line can automatically complete the stacking, the prior art is arranged in the upper and lower interval on the conveying platform for conveying the book that completes the binding and the stacking platform for stacking the book on the rack, so that the height difference is left between the conveying platform and the stacking platform. When the book is transported to the tail end of the conveying platform, it will directly fall to the surface of the stacking platform, and when the next book on the conveying platform is also transported to the tail end, it will fall to the surface of the previous book. Such reciprocating until the stacking platform transports the book stack to the packing platform when the stacking platform forms a thicker book stack. The stacking process of the book does not need to rely on manpower, and the stacking efficiency is higher.

[0004] However, the above scheme has the following problems: in the prior art, the height difference between the stacking platform and the conveying platform is fixed. Since the height of the book stack gradually increases during the stacking of the book, the height difference between the surface of the book stack and the conveying platform becomes smaller and smaller. When the height of the book stack approaches the surface of the conveying platform, the book falling on the conveying platform will be difficult to stack on the top of the book stack, and even the book stack formed by stacking is messy, which affects the efficiency of the book stack transfer and packaging. SUMMARY

[0005] In view of the above defects or deficiencies in the prior art, it is desirable to provide a book stacking mechanism. Each stack of books on the stacking platform is lowered by a predetermined height by the lifting assembly, so that the height difference between the surface of the book stack and the surface of the conveying platform is always maintained, so that the stacking operation of the book is more stable, the book stack is more flat, and the efficiency of the book transfer and packaging is improved.

[0006] The effect of the utility model is realized as follows:

[0007] The book stacking mechanism has an initial state and a stacking state, in the initial state, no books are stacked on the stacking platform, and a height difference is left between the surface of the stacking platform and the surface of the conveying platform; when the books on the conveying platform fall into the stacking platform, the book stacking mechanism enters the stacking state, and every time a book is stacked on the stacking platform, the lifting assembly drives the stacking platform to descend by a preset height, so that a height difference is always left between the surface of the book on the stacking platform and the surface of the conveying platform; when the books on the stacking platform reach a preset number, the lifting assembly drives the stacking platform to rise to the initial state, and the stacking platform outputs the book stack formed by stacking.

[0008] Further, the lifting assembly comprises a cam, a rotating shaft and a first driving mechanism, the rotating shaft is transversely arranged at the lower side of the stacking platform, the cam is fixedly connected to the rotating shaft, and the upper end of the cam abuts against the lower end of the stacking platform, the first driving mechanism is configured to drive the rotating shaft to rotate circumferentially, thereby driving the cam to rotate; in the stacking state, every time a book is stacked on the stacking platform, the first driving mechanism drives the rotating shaft to rotate by a preset angle, and the cam rotates and drives the stacking platform to descend by a preset height. The rotation of the cam drives the stacking platform to rise or descend, which is not only simple and stable in structure, but also has the advantages of fast transmission efficiency and high precision in cam transmission.

[0009] Further, the stacking platform comprises left and right symmetrical sliding parts, roller shafts are rotatably connected to the sliding parts on both sides, and the rotating shaft is provided with two left and right symmetrical cams, and the top ends of the cams abut against the roller shafts. This makes the lifting process of the stacking platform more stable and smooth, and the transmission efficiency is higher.

[0010] Further, the stacking platform and the rack are connected through a guide rail structure, the guide rail structure comprises a guide rail and a sliding block that slide with each other, the guide rail is arranged in one of the stacking platform and the rack in the vertical direction, and the sliding block is arranged in the other of the stacking platform and the rack. Not only does this make the connection between the stacking platform and the rack stronger, but also makes the lifting process of the stacking platform more stable and smooth.

[0011] Further, the rack comprises left and right symmetrical support plates, the stacking platform comprises left and right symmetrical sliding parts, and the sliding parts on both sides and the support plates are connected through guide rail structures. The two groups of guide rail structures guide the lifting of the left and right sides of the stacking platform respectively, and the stress is more balanced, so that the lifting process of the stacking platform is more stable and smooth.

[0012] Further, the rack is provided with a mounting rack, a transversely arranged baffle is slidably connected to the mounting rack, the baffle is configured to stop the front end of the book stack, a second driving mechanism is arranged on the mounting rack, and the second driving mechanism is configured to drive the baffle to slide up and down in the vertical direction; when the book stacking mechanism is in the stacking state, the baffle and the mounting rack remain relatively fixed and abut against the front side of the book stack, and when the books on the stacking platform reach the preset number, the second driving mechanism drives the baffle to rise, so that the book stack can pass through the mounting rack and be transferred out of the stacking platform. By arranging the baffle to stop the front end of the book stack, the front end of the book in the stacking process is constrained by the baffle and can be stably stopped at the front end of the baffle, so that the book stack can maintain a flat posture, facilitating subsequent packaging and further improving the efficiency of book transfer and packaging.

[0013] Further, the mounting rack includes left and right vertically arranged support portions, a flattening plate is slidably connected to each of the two support portions, a third driving mechanism is arranged on the support portion, and the third driving mechanism is configured to drive the flattening plate to slide left and right in the horizontal direction; when the books on the stacking platform reach the preset number, the third driving mechanisms on the left and right sides drive the flattening plates to move towards the books, and the flattening plates are configured to flatten the left and right ends of the books. The book stack transferred out of the stacking platform is more flat, further improving the convenience of book transfer and packaging.

[0014] Further, the rack includes left and right symmetrically arranged support plates, and the mounting rack includes left and right vertically arranged support portions, the two support portions are slidably connected to the support plates in the front-rear direction respectively, so that the mounting rack can slide forward and backward relative to the rack. The user can adjust the front-rear position of the mounting rack according to the size of the books to be stacked, which is more practical.

[0015] The book stacking mechanism provided by the present application is in the stacking state, and each book on the stacking platform is stacked, the lifting assembly drives the stacking platform to descend by a preset height, so that an appropriate height difference is always maintained between the surface of the book stack and the surface of the conveying platform, thereby ensuring that the next book can always be stably stacked above the previous book, the stacking operation of the books is more stable, the formed book stack is more flat, and the efficiency of book transfer and packaging is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0017] Figure 1 A perspective structural schematic view of the book stacking mechanism provided by the embodiments of the present application is shown;

[0018] Figure 2 A perspective structural schematic view of the stacking platform provided by the embodiments of the present application is shown;

[0019] Figure 3A state change schematic diagram of the book stacking mechanism in the initial state provided by the embodiment of the present application is shown in the following figure;

[0020] Figure 4 A state change schematic diagram of the book stacking mechanism in the stacking process provided by the embodiment of the present application is shown in the following figure;

[0021] Figure 5 A state change schematic diagram of the book stacking mechanism when stacked to the maximum number provided by the embodiment of the present application is shown in the following figure;

[0022] Figure 6 A state change schematic diagram of the book stacking mechanism after the stacking platform resets to the initial state provided by the embodiment of the present application is shown in the following figure;

[0023] Figure 7 A connection structure schematic diagram between the stacking platform and the rack provided by the embodiment of the present application is shown in the following figure;

[0024] Figure 8 A connection structure schematic diagram between the mounting rack and the rack provided by the embodiment of the present application is shown in the following figure;

[0025] Figure 9 A connection structure schematic diagram between the baffle, the alignment plate and the mounting rack provided by the embodiment of the present application is shown in the following figure.

[0026] The reference signs are as follows: 1-rack, 110-supporting plate, 111-guide rail, 112-sliding supporting piece, 2-stacking platform, 210-supporting part, 211-roller bearing, 220-stacking part, 3-conveying platform, 4-lifting assembly, 410-cam, 411-sliding block, 412-sliding groove, 420-rotation shaft, 430-servo motor, 5-mounting rack, 501-cross beam, 502-supporting part, 503-first air cylinder, 504-second air cylinder, 510-baffle, 520-alignment plate. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and are not a limitation on the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings.

[0028] Please refer to the drawings Figures 1-9The book stacking mechanism has an initial state and a stacking state. In the initial state, no book is stacked on the stacking platform 2, and a height difference is left between the surface of the stacking platform 2 and the surface of the conveying platform 3. When a book on the conveying platform 3 falls into the stacking platform 2, the book stacking mechanism enters the stacking state. Whenever a book is stacked on the stacking platform 2, the lifting assembly 4 drives the stacking platform 2 to descend by a preset height, so that a height difference is always left between the surface of the book on the stacking platform 2 and the surface of the conveying platform 3. When the books on the stacking platform 2 reach a preset number, the lifting assembly drives the stacking platform 2 to rise to the initial state, and the stacking platform 2 outputs the book stack formed.

[0029] In the stacking state, the lifting assembly 4 drives the stacking platform 2 to descend by a preset height every time a book is stacked on the stacking platform 2, so that a proper height difference is always left between the surface of the book stack and the surface of the conveying platform 3, thereby ensuring that the next book can always be smoothly stacked above the previous book, making the book stacking operation more stable, the book stack more flat, and the efficiency of book transfer and packaging improved.

[0030] The stacking platform 2 includes a stacking part 220 for supporting and conveying books. The conveying platform 3 and the stacking part 220 have a large width, so that the books can be arranged in a row along the left-right direction and conveyed at one time, thereby accelerating the efficiency of book transfer and packaging. In addition, a plurality of conveying belts are arranged on the conveying platform 3 and the stacking part 220 along the width direction, the books are moved by the conveying belts, the weight of the books can be shared by the plurality of conveying belts, the transmission process is more stable, the wear of the conveying belts is reduced, and the service life is prolonged.

[0031] Please refer to the accompanying drawings Figures 2-7 In some embodiments of the present application, the lifting assembly 4 includes a cam 410, a rotating shaft 420, and a first driving mechanism. The rotating shaft 420 is transversely arranged at the lower side of the stacking platform 2, the cam 410 is fixedly connected to the rotating shaft 420, and the upper end of the cam 410 abuts against the lower end of the stacking platform 2. The first driving mechanism is configured to drive the rotating shaft 420 to rotate circumferentially, thereby driving the cam 410 to rotate. In the stacking state, whenever a book is stacked on the stacking platform 2, the first driving mechanism drives the rotating shaft 420 to rotate by a preset angle, and the cam 410 rotates and drives the stacking platform 2 to descend by a preset height.

[0032] In the initial state, the high surface of the cam 410 abuts against the bottom end of the stacking platform 2, so that the stacking platform 2 can be in a higher position, and the appropriate height difference between the stacking platform 2 and the conveying platform 3 is maintained; when entering the stacking state, every time a book is stacked on the stacking platform 2, the first driving mechanism drives the rotating shaft 420 to rotate by a preset angle, the cam 410 rotates and the high surface of the cam 410 downwardly rotates, so that the stacking platform 2 sinks by a preset height along the curved surface of the cam 410, so that the height difference between the book surface and the conveying platform 3 surface can be filled by the sinking height of the stacking platform 2, so that the book surface and the conveying platform 3 surface can always maintain the appropriate height difference, and ensure that the subsequent books can be stably placed above the previous book; when the books on the stacking platform 2 reach a preset number, the cam 410 rotates again and the high surface of the cam 410 upwardly rotates, so that the stacking platform 2 is driven upwardly by the cam 410 until the stacking platform 2 is raised to the initial state. Thus, the stacking platform 2 is raised or lowered by the rotation of the cam 410, which is not only simple and stable in structure, but also has the advantages of fast transmission efficiency and high precision.

[0033] Of course, in other embodiments of the present application, the lifting assembly 4 can also use a cylinder, an electric push rod or other mechanism to drive the stacking platform 2 to rise and fall.

[0034] Preferably, the first driving mechanism is a servo motor 430, which is fixed to one side of the left and right sides of the rack 1, and the rotating shaft 420 penetrates through the rack 1 and is connected to the servo motor 430. The servo motor 430 can more accurately drive the rotating shaft 420 to rotate by a preset angle, so that the stacking platform 2 can stably land by a preset height each time, and the adjustment operation is simple and has high precision.

[0035] Please refer to the accompanying drawings Figures 2-7 In some embodiments of the present application, the stacking platform 2 comprises left and right symmetrically arranged sliding parts 210, and the rotating shaft 420 is correspondingly provided with two left and right symmetrically arranged cams 410, and the top end of the cam 410 abuts against the roller bearing 211.

[0036] In the embodiment, the two groups of cams 410 respectively drive the left and right sides of the stacking platform 2 to rise and fall, so that the stress is more balanced, and the rising and falling process of the stacking platform 2 is more stable and smooth. Furthermore, by setting the roller bearing 211 and the cam 410 transmission, when the cam 410 rotates, the roller bearing 211 rotates along the curved surface of the cam 410 and drives the whole stacking platform 2 to rise or sink, so that the transmission process between the cam 410 and the stacking platform 2 is more stable, and the transmission efficiency is higher.

[0037] Please refer to the accompanying drawings Figure 7In some embodiments of the present application, the connection between the stacking platform 2 and the rack 1 is achieved through a guide rail structure, which comprises a guide rail 111 and a sliding block 411 that are slidably connected to each other. The guide rail 111 is arranged on one of the stacking platform 2 and the rack 1 in the vertical direction, and the sliding block 411 is arranged on the other one of the stacking platform 2 and the rack 1.

[0038] In the present embodiment, the sliding connection between the stacking platform 2 and the rack 1 is achieved through the guide rail structure, which not only makes the connection between the stacking platform 2 and the rack 1 stronger, but also makes the lifting process of the stacking platform 2 more stable and smooth.

[0039] In the present embodiment, the cross section of the guide rail 111 is in the shape of a swallowtail, and the cross section of the sliding groove 412 on the sliding block 411 that is slidably connected to the guide rail 111 is also in the corresponding shape, so that the sliding block 411 and the guide rail 111 are relatively fixed in the horizontal direction, and the stacking platform 2 and the rack 1 are relatively fixed in the horizontal direction, which makes the connection stronger.

[0040] Please refer to the accompanying drawings Figure 7 In some embodiments of the present application, the rack 1 comprises support plates 110 arranged symmetrically on the left and right sides, and the stacking platform 2 comprises sliding parts 210 arranged symmetrically on the left and right sides, and the sliding parts 210 on both sides are connected to the support plates 110 through the guide rail structure. The left and right sides of the stacking platform 2 are guided to lift by the two groups of guide rail structures respectively, which makes the force more balanced, so that the lifting process of the stacking platform 2 is more stable and smooth.

[0041] In the present embodiment, the sliding part 210 is in the shape of a plate, and the sliding part 210 is detachably connected to the left and right sides of the stacking part 220 through screw connection, which facilitates the installation and disassembly operation.

[0042] In the present embodiment, preferably, the guide rail 111 is arranged on the inner side of the support plate 111 in the vertical direction, and the sliding block 411 is arranged on the sliding part 210, and the sliding block 411 is detachably connected to the sliding part 210 through thread connection, which makes the installation and disassembly more convenient.

[0043] Of course, in other embodiments of the present application, the guide rail 111 can also be arranged on the sliding part 210 in the vertical direction, and the sliding block 411 is arranged on the support plate 111.

[0044] Please refer to the accompanying drawings Figures 8-9In some embodiments of the present application, the rack 1 is provided with a mounting rack 5, and a transversely arranged baffle plate 510 is slidably connected to the mounting rack 5. The baffle plate 510 is configured to stop the front end of the book stack. A second driving mechanism is arranged on the mounting rack 5 and configured to drive the baffle plate 510 to slide up and down in the vertical direction. When the book stacking mechanism is in the stacking state, the baffle plate 510 and the mounting rack 5 remain relatively fixed and abut against the front side of the book stack. When the books on the stacking platform 2 reach a preset number, the second driving mechanism drives the baffle plate 510 to rise, so that the book stack can pass through the mounting rack 5 and be transferred out of the stacking platform 2.

[0045] In this embodiment, the books slide forward a distance during the falling process due to the influence of inertia, which can easily cause the formed book stack to be more disordered and even cause the book stack to collapse. Therefore, by arranging the baffle plate 510 to stop the front end of the book stack, the front end of the book during the stacking process is constrained by the baffle plate 510 and can be stably stopped at the front end of the baffle plate 510, so that the book stack can maintain a flat posture, facilitating subsequent packaging and further improving the transfer and packaging efficiency of the books.

[0046] Preferably, the mounting rack 5 includes a top transversely arranged cross beam 501, and the second driving mechanism is a first air cylinder 503 arranged on the cross beam 501 and drives the baffle plate 510 to rise and fall, so that the lifting adjustment operation of the baffle plate 510 is more convenient.

[0047] Please refer to the accompanying drawings Figures 8-9 In some embodiments of the present application, the mounting rack 5 includes two vertically arranged support portions 502 on the left and right sides, and a flattening plate 520 is slidably connected to each of the two support portions 502. A third driving mechanism is arranged on the support portion 502 and configured to drive the flattening plate 520 to slide left and right in the horizontal direction. When the books on the stacking platform 2 reach a preset number, the third driving mechanisms on the left and right sides drive the flattening plates 520 to move towards the books, and the flattening plates 520 are configured to flatten the left and right ends of the books.

[0048] In this embodiment, the two flattening plates 520 are arranged to flatten the book stack, so that the book stack transferred out of the stacking platform 2 is more flat, further improving the convenience of book transfer and packaging.

[0049] Preferably, the second driving mechanism is a second air cylinder 504 arranged on the support portion 520 and drives the flattening plate 520 to move automatically in the horizontal direction, so that the flattening operation of the book stacking mechanism is more convenient.

[0050] Please refer to the accompanying drawings Figures 8-9In some embodiments of the present application, the rack 1 comprises support plates 110 arranged symmetrically left and right, and the mounting frame 5 comprises support portions 502 arranged vertically on the left and right sides, and the two support portions 502 are respectively connected to the support plates 110 in a sliding manner along the front and back directions, so that the mounting frame 5 can slide relative to the rack 1 in the front and back directions.

[0051] In the present embodiment, if the horizontal distance between the baffle 510 and the end of the conveying platform 3 is too long, the front end of the book cannot be attached to the baffle 510 after falling, thereby causing the formed book stack to be more messy; if the horizontal distance between the baffle 510 and the end of the conveying platform 3 is too short, the book cannot be stably placed above the stacking platform 2, causing the book to slide. Therefore, by slidingly connecting the mounting frame 5 to the rack 1, the position of the baffle 510 on the mounting frame 5 can be adjusted in the front and back directions, thereby allowing the user to adjust the front and back positions of the mounting frame 5 according to the size of the books to be stacked, ensuring that the front end of the book can be stopped by the baffle 510 after falling, and the utility is better.

[0052] Preferably, the support plate 110 comprises a sliding support 112 extending in the vertical direction at the upper end, the bottom end of the support portion 502 is slidingly connected to the sliding support 112, and the support portion 502 is fixed to the sliding support 112 by screw connection, so that the sliding adjustment operation of the mounting frame 5 is more convenient. Of course, in other embodiments of the present application, the mounting frame 5 can also be realized by a cylinder, an electric push rod, etc. to realize the sliding adjustment operation on the rack 1.

[0053] It should be understood that the above-mentioned terms such as "center", "longitudinal", "transverse", "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 drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is more than three.

Claims

1. A book stacking mechanism, characterized by, The book stacking mechanism has an initial state and a stacking state, in the initial state, the stacking platform (2) is not stacked with books, and a height difference is left between the surface of the stacking platform (2) and the surface of the conveying platform (3); when the books on the conveying platform (3) fall into the stacking platform (2), the book stacking mechanism enters the stacking state, and every time a book is stacked on the stacking platform (2), the lifting assembly (4) drives the stacking platform (2) to descend by a preset height, so that a height difference is always left between the surface of the book on the stacking platform (2) and the surface of the conveying platform (3). When the books on the stacking platform (2) reach a preset number, the lifting assembly drives the stacking platform (2) to rise to the initial state, and the stacking platform outputs the book stack formed.

2. The book stacking mechanism according to claim 1, wherein, The lifting assembly (4) includes a cam (410), a rotating shaft (420), and a first driving mechanism, the rotating shaft (420) is transversely arranged on the lower side of the stacking platform (2), the cam (410) is fixedly connected to the rotating shaft (420), and the upper end of the cam (410) abuts against the lower end of the stacking platform (2), the first driving mechanism is configured to drive the rotating shaft (420) to rotate circumferentially, thereby driving the cam (410) to rotate; in the stacking state, every time a book is stacked on the stacking platform (2), the first driving mechanism drives the rotating shaft (420) to rotate by a preset angle, and the cam (410) rotates and drives the stacking platform (2) to descend by a preset height.

3. The book stacking mechanism of claim 2, wherein, The stacking platform (2) includes left and right symmetrically arranged sliding parts (210), the rolling wheel bearings (211) are rotatably connected to the sliding parts (210) on both sides, the rotating shaft (420) is correspondingly provided with two symmetrically arranged cams (410), and the top ends of the cams (410) abut against the rolling wheel bearings (211).

4. The book stacking mechanism of claim 1, wherein, The stacking platform (2) and the rack (1) are connected through a guide rail structure, the guide rail structure includes a guide rail (111) and a sliding block (411) that slide with each other, the guide rail (111) is arranged in one of the stacking platform (2) and the rack (1) in the vertical direction, and the sliding block (411) is correspondingly arranged in the other one of the stacking platform (2) and the rack (1).

5. The book stacking mechanism of claim 4, wherein, The rack (1) includes left and right symmetrically arranged support plates (110), the stacking platform (2) includes left and right symmetrically arranged sliding parts (210), and the sliding parts (210) on both sides and the support plates (110) are connected through the guide rail structure.

6. The book stacking mechanism of claim 1, wherein, The rack (1) is provided with a mounting rack (5), the mounting rack (5) is slidably connected with a transversely arranged baffle (510), the baffle (510) is configured to stop the front end of the book stack, the mounting rack (5) is provided with a second driving mechanism, the second driving mechanism is configured to drive the baffle (510) to slide up and down along the vertical direction; when the book stacking mechanism is in the stacking state, the baffle (510) and the mounting rack (5) remain relatively fixed and abut against the front side of the book stack, when the books on the stacking platform (2) reach a preset number, the second driving mechanism drives the baffle (510) to rise, so that the book stack can pass through the mounting rack (5) and be transmitted out of the stacking platform (2).

7. The book stacking mechanism of claim 6, wherein, The mounting rack (5) includes two vertically arranged support portions (502) on the left and right sides, the two support portions (502) are each slidably connected with a straightening plate (520), the support portion (502) is provided with a third driving mechanism, the third driving mechanism is configured to drive the straightening plate (520) to slide left and right along the horizontal direction; when the books on the stacking platform (2) reach a preset number, the third driving mechanisms on the left and right sides drive the straightening plate (520) to move towards the books, the straightening plate (520) is configured to straighten the left and right ends of the books.

8. The book stacking mechanism of claim 6, wherein, The rack (1) includes two symmetrically arranged support plates (110), the mounting rack (5) includes two vertically arranged support portions (502) on the left and right sides, the two support portions (502) are respectively slidably connected to the support plates (110) along the front and back directions, so that the mounting rack (5) can slide forward and backward relative to the rack (1).

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