Portable book sorting platform
By designing an automatic book processing platform, using the collaborative work of front-end book processing components, cache and end roller components, the problems of inefficiency and error-prone traditional manual book packaging are solved, and fast and accurate book packaging is achieved, reducing the company's demand for personnel investment.
Patent Information
- Application Number
- CN202411975245.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-04-25
AI Technical Summary
Traditional manual book packing is inefficient, prone to errors, and cannot respond quickly to order demands.
Design an automatic book processing platform, including front-end book processing components, cache and end roller components, book dialing components, book dialing components, book sorting components and end book blocking components. Through the coordinated work of these components, the automatic book sorting and packing of books can be realized.
It realizes automatic book packing for unmanned work, improves efficiency, reduces manual errors, can quickly respond to order demands, and reduces the company's demand for personnel investment.
Smart Images

Figure CN119873018A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of portable book management platforms. Background Art
[0002] The traditional manual book sorting and packing method is inefficient, requires a large number of people and has low benefits. It is easy to make mistakes when sorting and packing books, and the books are not neat enough when sorting. When packing, the books will have wrinkles and other defects, and it is impossible to respond to order requirements quickly.
[0003] At present, the invention patent authorization announcement number CN 109892867B discloses a book sorting device. Although it is also an intelligent automatic book sorting platform, it sorts the books on the bookshelf and then puts them back on the bookshelf. It cannot be used in printing companies to sort and pack printed books. Summary of the invention
[0004] Aiming at the problem that the current manual material sorting greatly increases the workload of employees and reduces efficiency, the present invention provides a hardcover palletizing platform, which is an automatic material sorting platform serving robot palletizing and does not require manual operation.
[0005] The technical solution of the present invention to achieve its technical purpose is: a convenient book sorting platform for packing printed books; including a front-end book sorting component, a buffer and end roller component, a book picking component, a book picking and sorting component and an end book blocking component;
[0006] The front-end book sorting component, the buffer and the end roller component are sequentially arranged on the desktop of the frame to form a book sorting channel. After the book shifting component cooperates with the book shifting and sorting component to sort the books on the book sorting channel, the end book blocking component releases the books.
[0007] Furthermore, in the above-mentioned convenient book sorting platform: the front-end book sorting component includes a front-end channel composed of a group of front-end rollers installed on the unpowered left wall panel and the unpowered right wall panel on both sides, and a pair of positioning strips arranged on the front-end channel to play a positioning and guiding role so that the bottom page will not move when paper is padding, and one end of the positioning strip is fixed to a slider sliding in the positioning strip slide rail.
[0008] Furthermore, in the above-mentioned convenient book organization platform: in the front-end book organization component, two front-end channels connected in parallel are arranged in the unpowered left wall panel and the unpowered right wall panel on both sides, and each front-end channel has a pair of positioning strips; the two front-end channels are separated by the front-end middle wall panel, and the front-end roller on each front-end channel is installed between the front-end middle wall panel and the unpowered left wall panel or the unpowered right wall panel on both sides.
[0009] Furthermore, in the above-mentioned convenient book sorting platform: the cache and terminal roller assembly includes a cache area and a sorting area; the cache area and the sorting area are sequentially arranged between the cache roller left wall plate and the cache roller right wall plate respectively connected to the unpowered left wall plate or the unpowered right wall plate on both sides;
[0010] In the middle of the left wall plate of the cache drum and the right wall plate of the cache drum, the area where the cache area is located is also provided with a middle partition connected to the front middle wall plate; in the front half of the cache area, the short cache drum is respectively installed on the middle partition plate and the left wall plate of the cache drum and the right wall plate of the cache drum, and in the rear half of the cache area, the long cache drum passes through the middle partition plate, and the two ends are respectively installed on the left wall plate of the cache drum and the right wall plate of the cache drum;
[0011] In the finishing area, the end buffer roller is installed between the left wall plate of the buffer roller and the right wall plate of the buffer roller.
[0012] Furthermore, in the above-mentioned convenient book arrangement platform: the long cache roller and the short cache roller are composed of bearings evenly installed on a roller shaft.
[0013] Furthermore, in the above-mentioned convenient book arrangement platform: a cache detection device for detecting the speed of books on the left and right sides of the cache area is respectively installed on the left wall plate of the cache roller and the right wall plate of the cache roller.
[0014] Furthermore, in the above-mentioned convenient book organization platform: the long cache roller and the short cache roller are driven by motor 1; the end cache roller is driven by motor 2 under system control based on the detection result of the cache detection device.
[0015] Furthermore, the above-mentioned convenient book organization platform also includes a cache book blocking cylinder assembly, the cache book blocking cylinder assembly includes a cache book blocking cylinder and a cache book blocking plate; the cache book blocking plate is arranged between the cache area and the sorting area, and the cache book blocking cylinder, under system control, drives the cache book blocking plate based on the detection result of the cache detection device to prevent books from entering the sorting area from the cache area.
[0016] Furthermore, in the above-mentioned convenient book sorting platform: the book-pushing component and the book-pushing and sorting component are arranged on both sides of the sorting area; the book-pushing component includes a first book-smashing cylinder, a book-smashing board, and a backing board, and the backing board is vertically installed on one side of the sorting area, and the first book-smashing cylinder drives the book-smashing board to align the books along the direction of book movement; the book-smashing and sorting component includes a lifting cylinder, a book-pushing rod, and a synchronous belt connecting component; the lifting cylinder drives the book-pushing rod to slide up and down through the gap of the end buffer roller, and the synchronous belt connecting component drives the book-pushing rod to push the books toward the backing board.
[0017] Furthermore, in the above-mentioned convenient book sorting platform: the end book stop assembly is arranged at the end entering the sorting area, including an end book stop cylinder and an end book stop board; after the book enters the sorting area, the end book stop cylinder drives the end book stop board to rise, blocking the end of the sorting area to prevent the book from continuing to move forward.
[0018] The convenient principle book platform of the present invention is highly practical and has significant use effect, which can effectively reduce the enterprise's investment in personnel, optimize the process, shorten the working hours, reduce costs and improve benefits.
[0019] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Attached Figure 1 A three-dimensional diagram of a convenient book management platform according to an embodiment of the present invention;
[0021] Attached Figure 2 This is a structural diagram of the front-end book management component of Example 1 of the present invention;
[0022] Attached Figure 3 This is an exploded view of the front-end book management component of Example 1 of the present invention;
[0023] Attached Figure 4 This is a structural diagram of the cache and end roller assembly of Example 1 of the present invention;
[0024] Attached Figure 5 This is an exploded view of the cache and end roller assembly of Example 1 of the present invention;
[0025] Attached Figure 6 This is a structural diagram of the cache book blocking cylinder assembly of Example 1 of the present invention;
[0026] Attached Figure 7 This is an exploded view of the cache book blocking cylinder assembly of Example 1 of the present invention;
[0027] Attached Figure 8 This is a structural diagram of a paperboard bin and a book-picking assembly according to Embodiment 1 of the present invention;
[0028] Attached Fig. 9 This is an exploded view of the paperboard bin and book picking assembly of Example 1 of the present invention;
[0029] Attached Fig.10 This is a structural diagram of a book sorting component according to Embodiment 1 of the present invention;
[0030] Attached Fig.11 This is an exploded view of the book sorting assembly of Example 1 of the present invention;
[0031] Attached Fig.12 This is a structural diagram of the end book stop assembly of Example 1 of the present invention;
[0032] Attached Fig.13This is an exploded view of the end book stop assembly of Example 1 of the present invention. DETAILED DESCRIPTION
[0033] Embodiment 1: The main purpose of this embodiment of the present invention is to provide a convenient dual-channel book management platform. It is highly practical and has significant use effects, effectively reducing the investment of personnel in enterprises, optimizing processes, shortening working hours, reducing costs, and improving benefits.
[0034] like Figure 1 As shown, a portable dual-channel book sorting platform of the present embodiment mainly comprises a front-end book sorting component 1, which is a non-powered component, a cache and end roller component 2, a cache book blocking cylinder component 3, a book picking component 4, a book picking and sorting component 5 and an end book blocking component 6. The linkage between the components enables them to cooperate closely, and the book sorting effect is doubled, and none of them can be missing.
[0035] First of all, the front-end book sorting component 1 is a non-powered component, which is mainly composed of a front-end non-powered left wall panel 1-1 and a front-end non-powered right wall panel 1-10, a front-end non-powered middle wall panel 1-2, a wall panel mounting block 1-3, a front-end roller 1-4, a positioning strip slide 1-5 and a positioning strip 1-6. This structure is easy to install and disassemble, and the non-powered front-end roller 1-4 rotates without obstruction. The beginning of the positioning strip 1-6 is fixed on the slide located in the positioning strip slide 1-5, and can slide along the positioning strip slide 1-5, which is convenient for adapting to different specifications. In addition, it plays a positioning and guiding role, so that the bottom page will not move when padding paper, laying a solid foundation for the neatness of subsequent book sorting.
[0036] In this embodiment, the front-end book management component 1 is as follows Figure 2 and Figure 3 As shown: it includes a front channel composed of a front roller 1-4 installed on the unpowered left wall panel 1-1 and the unpowered right wall panel 1-10 on both sides, and a pair of positioning strips 1-6 arranged on the front channel to play a positioning and guiding role so that the bottom page will not move when padding paper. One end of the positioning strip 1-6 is fixed to a slider sliding in the positioning strip slide rail 1-5 to facilitate adaptation to different specifications. In the front book arrangement component 1, two front channels connected in parallel are arranged in the unpowered left wall panel 1-1 and the unpowered right wall panel 1-10 on both sides, and each front channel has a pair of positioning strips 1-6; the two front channels are separated by the front middle wall panel 1-2, and the front roller 1-4 on each front channel is installed between the front middle wall panel 1-2 and the unpowered left wall panel 1-1 or the unpowered right wall panel 1-10 on both sides. The front-end book sorting assembly 1 is manually operated, mainly adding gray cardboard and oil cardboard on the top and bottom of the book stack, and then pushing it forward by hand. Therefore, the front-end rollers 1-4 here are unpowered, and the two front-end channels are manually operated, some fast and some slow, so no power is provided.
[0037] like Figure 4 and Figure 5 Shown is the cache and end roller assembly 2, the rollers on it are driven by motors, and there are two motors, namely motor one and motor two. Like the front-end book sorting assembly 1, it is a dual-channel book sorting platform, mainly including the cache roller left wall panel 2-1, the cache roller right wall panel 2-9, the middle partition 2-8, the short cache wheel roller 2-2, the end roller 2-3, the long cache wheel roller 2-4, the cache detection device 2-5, the bearing pressure strip 2-6 and the shield 2-7; the end roller 2-3 and the short cache wheel roller 2-2 and the long cache wheel roller 2-4 in the cache and end roller assembly 2 are driven by two power sources, which do not affect each other. Motor one acts on the long cache wheel roller 2-4 to drive the short cache wheel roller 2-2 to rotate all the time, and motor two (not shown in the figure) drives The end roller 2-3 starts and stops under the control of the program to complete the book sorting; the cache detection device 2-5 is equipped with photoelectric devices to determine the priority of the speed of books in which channel. The fast ones pass first, and the slow ones are blocked by the cache book blocking cylinder assembly 3. The books in the end roller assembly 3 are released after the book sorting action is completed, and then the second-hand books are sorted, and the whole set of "passing on the cache wheel - caching on the cache wheel - book sorting on the end roller surface - passing on the cache wheel again" is repeated in sequence. The bearing pressure strip 2-6 presses the bearings on both sides to prevent jumping, and the protective cover 2-7 plays a safety protection role to prevent the operator from accidentally putting his hand into the transmission parts and causing self-injury.
[0038] In this embodiment, the cache and end roller assembly 2 includes a cache area 2-10 and a sorting area 2-20; the cache area 2-10 and the sorting area 2-20 are sequentially arranged between the cache roller left wall plate 2-1 and the cache roller right wall plate 2-9 which are respectively connected to the unpowered left wall plate 1-1 or the unpowered right wall plate 1-10 on both sides. In the area where the cache area 2-10 is located, there is also a middle partition 2-8 connected to the front middle wall plate 1-2; in the front half of the cache area 2-10, the short cache roller 2-2 is respectively installed on the middle partition 2-8 and the cache roller left wall plate 2-1 and the cache roller right wall plate 2-9, and in the rear half of the cache area 2-10, the long cache roller 2-4 passes through the middle partition 2-8, and the two ends are respectively installed on the cache roller left wall plate 2-1 and the cache roller right wall plate 2-9. In the sorting area 2-20, the end buffer roller 2-3 is installed between the left wall plate 2-1 of the buffer roller and the right wall plate 2-9 of the buffer roller. The long buffer roller 2-4 and the short buffer roller 2-2 are composed of a roller shaft 2-2-1 on which bearings 2-2-2 are evenly installed. The buffer detection device 2-5 for detecting the speed of books on the left and right sides of the buffer area 2-10 is installed on the left wall plate 2-1 of the buffer roller and the right wall plate 2-9 of the buffer roller respectively. The long buffer roller 2-4 and the short buffer roller 2-2 are driven by motor 1; the end buffer roller 2-3 is driven by motor 2 under system control based on the detection results of the buffer detection device 2-5. Here, since the long buffer roller 2-4 and the short buffer roller 2-2 are composed of a roller shaft 2-2-1 on which bearings 2-2-2 are evenly installed, the books are supported by the bearings 2-2-2, and when the books do not move forward, the bearings 2-2-2 and the roller shaft 2-2-1 move relative to each other.
[0039] like Figure 6 and Figure 7 As shown, the cache book blocking cylinder assembly 3 is arranged in the cache area 2-10 and the sorting area 2-20, including a guide rail mounting plate 3-1, a linear guide rail 3-2, a cache book blocking cylinder 3-3 and a cache book blocking plate 4-4. Its composition is relatively simple, and its function is relatively simple. It plays the role of blocking books. The books in the faster channel will be given priority, and the slower ones will be blocked.
[0040] Book dial component 4 Figure 8 and Fig. 9As shown, it is combined with the cardboard bin and is also called a cardboard bin and book-picking assembly. It mainly includes a cardboard bin shelf 4-1, a cardboard lifting support plate 4-2, and a cardboard positioning baffle 4-3. The three are important components of the cardboard bin. Gray cardboard and oil cardboard are placed on the cardboard lifting support plate 4-2 for easy picking by staff; followed by a cylinder adjustment screw 4-4, a book-beating cylinder 4-5, a linear guide 4-6, and a book-beating board 4-7. The book-beating assembly mainly composed of the book-beating board 4-7 also contains a cylinder inside, which can be extended and retracted up and down. When it is necessary to beat the books, the cylinder is extended and the book-beating board 4-7 is moved down. When it is not necessary to beat the books, the cylinder is retracted and the book-beating board is moved up to allow the books to pass through the passage below. The cardboard bin and book shifting assembly also include a support plate 4-8, a touch screen installation box 4-9, and an alarm light 4-10. The book-snapping cylinder 4-5 is connected to the book-snapping assembly via a floating joint (not shown in the figure), and the cylinder adjustment screw 4-4 can adjust the position of the book-snapping cylinder 4-5, so that books of different specifications can be accommodated during the snapping process. The touch screen on the touch screen installation box 4-9 has book counting screens for the left and right channels and the total output for the shift, so you can clearly see which channel has the most books. The more you work, the more you get, and healthy competition is easy to form among the staff, creating more benefits for the company. Here, the number of gray cardboards on the cardboard support plate 4-2 is set according to practice, which can be two pieces such as Figure 8 As shown, it can also be 3 blocks such as Figure 1 shown.
[0041] like Fig.10 and Fig.11 As shown, the book-picking and sorting assembly 5 mainly consists of a guide rail mounting plate 5-1, a linear guide rail 5-2, a book-picking rod mounting plate 5-3, a book-picking rod 5-4, a lifting cylinder 5-5, a reinforcing triangle plate 5-6 and a synchronous belt connecting assembly 5-7. The lifting cylinder 5-5 is installed on the guide rail mounting plate 5-1 to drive the book-picking rod 5-4 to slide up and down. The reinforcing triangle plate 5-6 plays a pivotal role between the guide rail mounting plate 5-1 and the synchronous belt connecting assembly 5-7, making the structure stable. The synchronous belt connecting assembly 5-7 is mainly connected to the synchronous belt. In this embodiment, the book-picking and sorting assembly 5 is servo-controlled and connected with a synchronous belt, which is convenient for the two channels to pick books back and forth.
[0042] In this embodiment, the book-pushing component 4 and the book-pushing and sorting component 5 are book-sorting components. The book-pushing component 4 is mainly composed of a book-slapping board 4-7 and a support board 4-8 to achieve book sorting, and the book-pushing and sorting component 5 has a book-pushing rod 5-4, which is irregularly combined with a book-blocking board 6-4 at the back to form a book-sorting component. The support board 4-8 is against the edge of the sorting area 2-20, and the book-pushing rod 5-4 pushes the books toward the support board 4-8 driven by the synchronous belt, and the book-blocking board 6-4 blocks the books, and the book-slapping board 4-7 shoots the books, so that the books are sorted in this place. After they are straight, the book-blocking board 6-4 falls, the books leave the sorting area, and then they are put into boxes to complete the book sorting task.
[0043] like Fig.12 and Fig.13 As shown, the end book stop assembly 6 and the cache book stop cylinder assembly 3 have similar structures, and are mainly composed of a cylinder mounting plate 6-1, a book stop cylinder 6-2, a book stop board mounting plate 6-3, and a book stop board 6-4. The book stop cylinder 6-2 is mounted on the cylinder mounting plate 6-1, and the book stop board 6-4 is mounted on the book stop board mounting plate 6-3. After the book enters the cache and end cylinder assembly 2, that is, the sorting area 2-10, the book stop board rises to block the end, which is conducive to book sorting and aligning. Each component cooperates closely to complete the book sorting action in an orderly manner, reduce manual intervention and save time, and effectively reduce costs.
[0044] In this embodiment, when the machine is turned on, the staff needs to do some preparation work, respectively put the gray cardboard and the oil cardboard on the cardboard lifting support plate 4-2 for easy picking, and then put the books on the cardboard according to the following actions: the gray cardboard is laid flat on the surface of the unpowered roller, the oil cardboard is laid on the gray cardboard, the book is laid on the gray cardboard, the oil cardboard is above the book, and the gray cardboard is on the top; after completing these actions, it is sent into the buffer area 2-10 along the positioning strip 1-6, and on the short buffer roller 2-2, the left and right channels formed on the left and right short buffer rollers 2-2 are each detected by a photoelectric detection device 3-5. The channel on which the book arrives first will be released first, and the late ones will be blocked by the cache book blocking cylinder assembly 3, and then Then it enters the sorting area 2-20 and is sorted on the end buffer roller 2-3: the book stopper 6-4 rises, and the book reaches the position of the book stopper 6-4 driven by the end buffer roller 2-3. Then, in the book-slapping board assembly, the book-push board 4-7 extends downward under the action of the book-push board cylinder, and the cylinder pushes the book-slapping assembly forward to align the front and back sides. Then, the book-push rod 5-4 is aligned with the support plate 4-8 under the action of the servo to complete the left and right alignment. After completing the four-side arrangement, the end book stopper 6-4 releases it and enters the next link. Then, the book on the short buffer wheel assembly 2-2 is released and enters the end roller assembly 2-3. The above aligning action is repeated, and the whole process is cycled.
Claims
1. A convenient book arrangement platform for packing printed books; its characteristics are: It comprises a front-end book arrangement component (1), a buffer and end roller component (2), a book shifting component (4), a book shifting and sorting component (5) and an end book stop component (6); The front-end book sorting component (1) and the buffer and end roller component (2) are sequentially arranged on the tabletop (10-1) of the frame (10) to form a book sorting channel. After the book shifting component (4) cooperates with the book shifting and sorting component (5) to sort the books on the book sorting channel, the end book blocking component (6) releases the books.
2. The convenient book management platform according to claim 1, characterized in that: The front-end book arrangement component (1) comprises a front-end channel composed of a group of front-end rollers (1-4) installed on the non-powered left wall panel (1-1) and the non-powered right wall panel (1-10) on both sides, and a pair of positioning strips (1-6) arranged on the front-end channel to play a positioning and guiding role so that the bottom page will not move when padding paper, and one end of the positioning strip (1-6) is fixed to a slider sliding in the positioning strip slide rail (1-5).
3. The convenient book management platform according to claim 2, characterized in that: In the front-end book sorting component (1), two front-end channels connected in parallel are arranged in the unpowered left wall panel (1-1) and the unpowered right wall panel (1-10) on both sides, and each front-end channel has a pair of positioning strips (1-6); the two front-end channels are separated by the front-end middle wall panel (1-2), and the front-end roller (1-4) on each front-end channel is installed between the front-end middle wall panel (1-2) and the unpowered left wall panel (1-1) or the unpowered right wall panel (1-10) on both sides.
4. The convenient book management platform according to claim 3, characterized in that: The cache and terminal roller assembly (2) comprises a cache area (2-10) and a sorting area (2-20); the cache area (2-10) and the sorting area (2-20) are sequentially arranged between a cache roller left wall plate (2-1) and a cache roller right wall plate (2-9) respectively connected to the unpowered left wall plate (1-1) or the unpowered right wall plate (1-10) on both sides; Between the left wall plate (2-1) of the cache roller and the right wall plate (2-9) of the cache roller, the area where the cache area (2-10) is located is also provided with a middle partition plate (2-8) connected to the front middle wall plate (1-2); in the front half of the cache area (2-10), the short cache roller (2-2) is respectively installed on the middle partition plate (2-8) and the left wall plate (2-1) of the cache roller and the right wall plate (2-9) of the cache roller; in the rear half of the cache area (2-10), the long cache roller (2-4) passes through the middle partition plate (2-8), and the two ends are respectively installed on the left wall plate (2-1) of the cache roller and the right wall plate (2-9) of the cache roller; In the arranging area (2-20), the end buffer roller (2-3) is installed between the buffer roller left wall plate (2-1) and the buffer roller right wall plate (2-9).
5. The convenient book management platform according to claim 4, characterized in that: The long buffer roller (2-4) and the short buffer roller (2-2) are composed of bearings (2-2-2) evenly mounted on a roller shaft (2-2-1).
6. The convenient book management platform according to claim 5, characterized in that: A cache detection device (2-5) for detecting the speed of books on the left and right sides of the cache area (2-10) is respectively installed on the cache roller left wall plate (2-1) and the cache roller right wall plate (2-9).
7. The convenient book management platform according to claim 6, characterized in that: The long cache roller (2-4) and the short cache roller (2-2) are driven by motor one; the end cache roller (2-3) is driven by motor two under system control based on the detection result of the cache detection device (2-5).
8. The convenient book management platform according to claim 7, characterized in that: The system also comprises a cache book blocking cylinder assembly (3), wherein the cache book blocking cylinder assembly (3) comprises a cache book blocking cylinder (3-3) and a cache book blocking plate (3-4); the cache book blocking plate (3-4) is arranged between the cache area (2-10) and the sorting area (2-20); the cache book blocking cylinder (3-3) drives the cache book blocking plate (3-4) to determine whether to prevent books from entering the sorting area (2-20) from the cache area (2-10) based on the detection result of the cache detection device (2-5) under system control.
9. The convenient book management platform according to claim 7, characterized in that: The book-pushing assembly (4) and the book-pushing and sorting assembly (5) are arranged on both sides of the sorting area (2-20); the book-pushing assembly (4) comprises a first book-smashing cylinder (4-5), a book-smashing board (4-7), and a backing board (4-7); the backing board (4-7) is vertically installed on one side of the sorting area (2-20); the first book-smashing cylinder (4-5) drives the book-smashing board (4-7) to align the books along the book movement direction; the book-pushing and sorting assembly (5) comprises a lifting cylinder (5-5), a book-pushing rod (5-4), and a synchronous belt connecting assembly (5-7); the lifting cylinder (5-4) drives the book-pushing rod (5-4) to slide up and down from the gap of the end buffer roller (2-3); the synchronous belt connecting assembly (5-7) drives the book-pushing rod (5-4) to push the books toward the backing board (4-7).
10. The convenient book management platform according to claim 9, characterized in that: The end book stop assembly (6) is arranged at the end of the book entering the sorting area (2-20), and comprises an end book stop cylinder (6-2) and an end book stop board (6-4); after the book enters the sorting area (2-20), the end book stop cylinder (6-2) drives the end book stop board (6-4) to rise, blocking the end of the sorting area (2-20) to prevent the book from moving forward.
Citation Information
Patent Citations
Book arrangement device
CN109892867B