Bookblock pressing and conveying mechanism

Abstract

The utility model relates to the technical field of conveying equipment, in particular to a bookblock pressing and conveying mechanism which comprises a base and a plurality of supports arranged on the base, and each support is provided with a first conveying portion and a second conveying portion used for being matched with the first conveying portion to press and convey a bookblock. The first conveying part and the second conveying part can be movably arranged on the support in the mode of being close to each other or away from each other, and the support is provided with an adjusting component used for adjusting the distance between the first conveying part and the second conveying part. The first conveying part and the second conveying part can be controlled to move on the support in the direction close to each other or away from each other by operating the adjusting component, so that the distance between the first conveying part and the second conveying part is adjusted, automatic adjustment of the distance is achieved, and the bookblocks with different thicknesses and different specifications are conveyed. And the practicability of the conveying mechanism is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to conveying equipment technical field especially relates to a book core compression conveying mechanism. BACKGROUND

[0002] In the book printing and binding process, the conveying of book core is a crucial link; the conveying of book core not only needs to guarantee the speed and efficiency, but also needs to ensure the stability and accuracy of book core in the conveying process, so as to carry out subsequent gluing, cutting, binding and other processes. However, the existing book core conveying equipment is as follows:

[0003] The Chinese patent document with publication number CN217837421U discloses an upper book core conveying mechanism for clamping book core discharge, specifically discloses: including the clamping seat that can move to each other, the clamping seat is provided with the friction clamping block that clamps the book core, the clamping seat is provided with the drive mechanism that drives the friction clamping block to move along the length direction of clamping seat, the drive mechanism includes the drive wheel that drives the linear motion of friction clamping block, the drive mechanism further includes the universal shaft that is in transmission connection with the drive wheel, the clamping seat is provided with the positioning mechanism for preventing the displacement of friction clamping block;Through the rotation of universal shaft, when the position of clamping seat changes, the transmission of drive mechanism can still be maintained, and the friction clamping block can still reciprocate along the clamping seat;In addition, through the positioning mechanism, the displacement phenomenon of clamping seat can be prevented when sliding or after clamping the book core due to the reaction force, thereby further packaging the clamping stability of friction clamping block to the book core, and preventing the book core from falling.

[0004] As can be seen from the above, although the existing conveying mechanism realizes the clamping and conveying of book core, its adjusting mechanism is not flexible enough, making it relatively inconvenient to adjust the position of clamping seat when needed, and automatic control of adjustment cannot be realized. Therefore, the present application provides a book core compression conveying mechanism to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiency of prior art to provide a book core compression conveying mechanism to solve the technical problem that the existing conveying book core conveying equipment is not convenient for automatic adjustment.

[0006] To achieve the above object, the technical scheme of the utility model is as follows:

[0007] A book core compression conveying mechanism, comprising a base and a plurality of supports arranged on the base, the supports are provided with a first conveying part and a second conveying part for cooperating with the first conveying part to compress and convey the book core; the first conveying part and the second conveying part are movably arranged on the supports towards each other or away from each other, and the supports are provided with an adjusting component for adjusting the distance between the first conveying part and the second conveying part.

[0008] Furthermore, the second conveying unit includes a support plate movably mounted on the bracket and whose length direction is consistent with the conveying direction. The two ends of the support plate are respectively provided with a first sprocket and a second sprocket. A conveying chain is wound around the first sprocket and the second sprocket. Each chain plate of the conveying chain is equipped with a pressure block for clamping the book core during the conveying process. The first sprocket is connected to the transmission module through a connector.

[0009] Furthermore, each pressing block has anti-slip textured edges on the side that contacts the book block; the support plate is equipped with a protective plate to prevent the upper part of the book block from spreading out during transport.

[0010] Furthermore, the bottom of the first and second conveying sections is equipped with a limiting component for limiting the lower half of the book block side during the conveying process.

[0011] Furthermore, the limiting component includes a fixing block disposed on the support plate, a sliding rod slidably disposed on the fixing block, and the sliding direction of the sliding rod is perpendicular to the conveying direction of the book block. A first limiting plate is mounted on the sliding rod, and a second limiting plate is mounted on the first conveying part for cooperating with the first limiting plate to limit the book block during the conveying process.

[0012] Furthermore, a movable rod is slidably provided on the fixed block, with its sliding direction parallel to the conveying direction of the book block. A pusher is installed on the movable rod to push the slide bar to slide laterally on the fixed block. A bevel is formed on the side of the pusher that contacts the end of the movable rod. A spring is provided between the first limiting plate and the fixed block to apply force to the first limiting plate.

[0013] Furthermore, the base is equipped with a drive component for controlling the simultaneous operation of the first conveying section and the second conveying section, and the ends of the first conveying section and the second conveying section are connected to the drive component via a transmission module.

[0014] Furthermore, the transmission module includes a first universal joint that is driven to the first conveying unit and a second universal joint that is driven to the second conveying unit; the drive component includes a drive motor and a right-angle steering gear. The right-angle steering gear is provided in a pair and is driven to the first universal joint and the second universal joint respectively. The output shaft of the drive motor is driven to the pair of right-angle steering gears through the transmission component to drive the pair of right-angle steering gears to run synchronously.

[0015] Furthermore, the adjustment component includes several adjustment modules mounted on different supports. Each adjustment module includes a slide rail arranged laterally and whose length direction is perpendicular to the transport direction of the book block. A first slider and a second slider are slidably mounted on the slide rail. A first transport part is mounted on the first slider, and a second transport part is mounted on the second slider. The component also includes a positive and negative threaded rod whose length direction is parallel to the length direction of the slide rail. The first slider and the second slider are threadedly connected to different threaded parts on the positive and negative threaded rods, respectively.

[0016] Furthermore, the bracket is rotatably equipped with a drive shaft whose length direction is parallel to the conveying direction of the book block, and the ends of the drive shaft and each positive and negative threaded rod are connected by a first bevel gear set; the bracket is also equipped with a servo motor, and the output shaft of the servo motor is connected to the drive shaft by a second bevel gear set.

[0017] The beneficial effects of this utility model are as follows: When the book block needs to be transported, the book block is clamped by the first transport part and the second transport part. While clamping, the first transport part and the second transport part are running to transport the clamped book block, thereby realizing the pressing and transporting of the book block. During the transport process, the bottom of the book block can be coated with glue and other processing.

[0018] Furthermore, by operating the adjustment component, the first and second conveying parts can be controlled to move closer to or further apart on the support, thereby adjusting the distance between the first and second conveying parts and realizing automatic adjustment of the distance to accommodate book blocks of different thicknesses and to transport book blocks of different specifications, thus improving the practicality of this conveying mechanism. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective.

[0021] Figure 3 This is a partial structural schematic diagram of the present invention.

[0022] Figure 4 This is a schematic diagram of the second conveying part of this utility model.

[0023] Figure 5 This is a schematic diagram of the bridge component structure of this utility model.

[0024] Figure 6 This is a schematic diagram of the limiting component structure of this utility model.

[0025] Figure 7 This is a schematic diagram of the adjustment component structure of this utility model.

[0026] Figure 8 This is an enlarged view of part A of this utility model.

[0027] The reference numerals in the figures include:

[0028] 1. Base; 2. Bracket; 3. First conveyor section; 4. Second conveyor section; 41. Support plate; 42. First sprocket; 43. Second sprocket; 44. Conveyor chain; 45. Pressure block; 46. Anti-slip texture; 47. Connector; 48. Protective plate; 5. Transmission module; 51. First universal joint; 52. Second universal joint; 6. Drive component; 61. Drive motor; 62. Right-angle steering gear; 63. Transmission component; 7. Adjustment component; 71. Slide rail; 72. First slider; 73. Second slider; 74. Positive and negative threaded screw; 75. Transmission 76. Shaft; 77. First bevel gear set; 78. Servo motor; 79. Second bevel gear set; 80. Limiting component; 81. Fixing block; 82. Slide rod; 83. First limiting plate; 84. Movable rod; 85. Push block; 86. Inclined edge; 87. Threaded rod; 88. Connecting block; 89. Control unit; 810. Second limiting plate; 811. Spring; 9. First guide plate; 10. Second guide plate; 11. Bridge component; 111. Fixed seat; 112. Rotating shaft; 113. Conveyor wheel; 114. Conveyor belt; 115. Gear disc; 116. Gear. Detailed Implementation

[0029] The following is a detailed description of a book block pressing and conveying mechanism according to the present invention, with reference to the accompanying drawings.

[0030] like Figures 1-3 As shown, an embodiment of the book block pressing and conveying mechanism of this utility model includes a base 1 and several brackets 2 disposed on the base 1. The brackets 2 are equipped with a first conveying part 3 and a second conveying part 4 for cooperating with the first conveying part 3 to press and convey the book block. The first conveying part 3 and the second conveying part 4 are arranged side by side or front and back. A conveying track is formed between the first conveying part 3 and the second conveying part 4. The initial end of the conveying track is connected to a feeding device (not shown in the figure) for feeding the book block. The feeding device (not shown in the figure) intermittently feeds the book block, thereby conveying the book block to the initial end of the first conveying part 3 and the second conveying part 4. The first conveying part 3 and the second conveying part 4 clamp the book block. While clamping, the first conveying part 3 and the second conveying part 4 are running to convey the clamped book block, thereby realizing the pressing and conveying of the book block. During the conveying process, the bottom of the book block can be processed by applying glue or other processing.

[0031] Furthermore, the first conveying unit 3 and the second conveying unit 4 are movably mounted on the support 2, moving closer to or further away from each other. By adjusting the distance between the first conveying unit 3 and the second conveying unit 4, book blocks of different thicknesses can be accommodated, and book blocks of different specifications can be conveyed. To achieve automatic adjustment of the distance between them, an adjusting component 7 is provided on the support 2 for adjusting the distance between the first conveying unit 3 and the second conveying unit 4. By operating the adjusting component 7, the first conveying unit 3 and the second conveying unit 4 can be controlled to move closer to or further away from each other on the support 2, thereby achieving automatic adjustment of the distance and improving the practicality of this conveying mechanism.

[0032] A drive component 6 is installed on the base 1 to control the simultaneous operation of the first conveying section 3 and the second conveying section 4. The ends (or beginnings) of the first conveying section 3 and the second conveying section 4 are connected to the drive component 6 via a transmission module 5. By operating the drive component 6 and under the action of the transmission module 5, the first conveying section 3 and the second conveying section 4 can be controlled to operate simultaneously, thereby conveying the book block. Furthermore, when adjusting the distance between the first conveying section 3 and the second conveying section 4, the ends (or beginnings) of the first conveying section 3 and the second conveying section 4 are always connected to the drive component 6 via the transmission module 5. How the transmission is achieved will be described below.

[0033] In addition, the bottom of the first conveying unit 3 and the second conveying unit 4 is equipped with a limiting component 8 for limiting the lower half of the book block side during the conveying process. In order to facilitate the processing of the bottom of the book block such as gluing, the first conveying unit 3 and the second conveying unit 4 press the upper half of the book block side during the pressing and conveying process, and the lower half of the book block is exposed below the first conveying unit 3 and the second conveying unit 4. However, during the conveying process of the book block, the limiting component 8 limits the lower half of the book block side to prevent the lower half of the book block from spreading out (after spreading out, air will enter through the gaps in the paper), which will affect the subsequent gluing and other processing steps. The limiting component 8 is set to solve this problem.

[0034] Additionally, a first guide plate 9 and a second guide plate 10 are installed at the initial ends of the first conveying section 3 and the second conveying section 4 to guide the book block between them (i.e., the conveying trajectory). The first guide plate 9 and the second guide plate 10 are arranged in a figure-eight pattern. When the feeding device (not shown in the figure) intermittently feeds the book block, the first guide plate 9 and the second guide plate 10 guide the book block, thereby guiding it between the first conveying section 3 and the second conveying section 4, improving the accuracy of the book block pressing and conveying. At the ends of the first conveying section 3 and the second conveying section 4, a bridge component 11 is installed to connect this conveying mechanism with other conveying equipment. After the book block is conveyed and processed such as by gluing, the processed book block is conveyed to the ends of the first conveying section 3 and the second conveying section 4. At this time, the bridge component 11 supports the bottom of the book block while conveying it, preventing the book block from falling during the process of conveying the processed book block to the next device, thus improving the efficiency of book block processing.

[0035] like Figures 4-5 As shown, the first conveying section 3 and the second conveying section 4 have the same structure and are arranged in a mirror image of each other in the direction of operation. The second conveying section 4 includes a support plate 41 movably mounted on the bracket 2 with its length direction aligned with the conveying direction. A first sprocket 42 and a second sprocket 43 are rotatably mounted at both ends of the support plate 41, such that the first sprocket 42 and the second sprocket 43 are arranged along the conveying trajectory of the book block. A conveying chain 44 is wound around the first sprocket 42 and the second sprocket 43. Each chain plate of the conveying chain 44 is equipped with a pressure block 45 for clamping the book block during the conveying process. The first sprocket 42 is connected to the transmission module 5 via a connector 47. The drive unit 6, under the action of the transmission module 5, drives the first sprocket 42 to rotate counterclockwise (rotation direction is...). Figure 5 Based on the reference point, the book block is pressed and conveyed by a conveyor chain 44 carrying several pressing blocks 45. The pressing blocks 45 on the first conveyor section 3 move synchronously to achieve the pressing and conveying of the book block. In order to improve the conveying efficiency of the book block, anti-slip textures 46 are formed on the side of each pressing block 45 that contacts the book block. The anti-slip textures 46 increase the friction between the pressing block 45 and the book block, preventing the book block from shifting during the conveying process. A protective plate 48 is also installed on the support plate 41 to prevent the upper part of the book block from spreading out during the conveying process. The first conveyor section 3 is also equipped with a protective plate 48. With the cooperation of the protective plates 48 on both sides, the upper part of the book block will not spread out during the conveying process.

[0036] Furthermore, the bridge component 11 includes a fixed seat 111 mounted on the support plate 41. A pair of parallel rotating shafts 112 arranged along the conveying direction of the book block are rotatably mounted on the fixed seat 111. Each rotating shaft 112 is equipped with a conveyor wheel 113, and a conveyor belt 114 for supporting the bottom of the book block is wound around the conveyor wheel 113. After the book block is processed, it is conveyed to the end of the first conveying section 3 and the second conveying section 4. Simultaneously, the book block is placed on the conveyor belt 114 and supported. When the first sprocket 42 rotates, the conveyor wheel 113 rotates simultaneously with the first sprocket 42, thus achieving seamless conveying between the two devices. To drive the conveyor wheel 113 to rotate, a gear disc 115 is mounted on the connecting member 47, coaxially arranged with the first sprocket 42 and with its teeth facing downwards. A gear 116 meshing with the gear disc 115 is mounted at the end of the rotating shaft 112. When the first sprocket 42 is driven to rotate counterclockwise (rotation direction is...), the conveyor wheel 113 rotates... Figure 5 When (based on), the drive gear 115 rotates counterclockwise, and under the action of gear 116, it drives the rotating shaft 112 to rotate counterclockwise (rotation direction is as follows). Figure 5 Based on the standard, the book block is conveyed to the next device via conveyor belt 114.

[0037] like Figure 6 As shown, the limiting component 8 includes a fixing block 81 mounted on the support plate 41. A sliding rod 82 is slidably mounted on the fixing block 81, and the sliding direction of the sliding rod 82 is perpendicular to the conveying direction of the book block. A first limiting plate 83 is mounted on the sliding rod 82. The first conveying part 3 is equipped with a second limiting plate 810 for cooperating with the first limiting plate 83 to limit the book block during the conveying process. The first limiting plate 83 and the second limiting plate 810 are respectively placed on both sides of the book block during the conveying process, thereby limiting the two sides of the book block and causing the lower half of the book block to spread out. Furthermore, by controlling the sliding rod 82 to slide laterally on the fixing block 81, the position of the first limiting plate 83 can be adjusted to prevent paper jams from occurring during the conveying of the book block.

[0038] In order to control the slide bar 82 to slide laterally on the fixed block 81, the fixed block 81 is provided with a movable rod 84 whose sliding direction is parallel to the conveying direction of the book block. The movable rod 84 is equipped with a push block 85 for pushing the slide bar 82 to slide laterally on the fixed block 81. The push block 85 has a bevel 86 formed on the side that contacts the end of the movable rod 84. A spring 811 for applying force to the first limiting plate 83 is provided between the first limiting plate 83 and the fixed block 81. When the control lever 84 slides on the fixed block 81, it drives the push block 85 to move. The inclined edge 86 on the push block 85 pushes the slide rod 82 to slide laterally on the fixed block 81. At this time, the spring 811 is stretched, which controls the first limiting plate 83 to move closer to the second limiting plate 810. When the control lever 84 slides in the opposite direction on the fixed block 81, it drives the inclined edge 86 on the push block 85 to slowly disengage from the slide rod 82. Under the action of the stretching spring 811, it pulls the first limiting plate 83 to move away from the second limiting plate 810, thereby adjusting the position of the first limiting plate 83.

[0039] In addition, the limiting component 8 also includes a threaded rod 87 whose length direction is parallel to the conveying direction of the book block. A connecting block 88 that is threadedly connected to the threaded rod 87 is mounted on the movable rod 84. It also includes a control unit 89 for driving the threaded rod 87 to rotate a specified number of turns. By driving the threaded rod 87 to rotate a specified number of turns through the control unit 89, and in cooperation with the connecting block 88, the movable rod 84 can be controlled to slide a specified distance on the fixed block 81, and finally the first limiting plate 83 can be adjusted to a specified position.

[0040] like Figure 7 As shown, the transmission module 5 includes a first universal joint 51 that is driven to the first conveying section 3 and a second universal joint 52 that is driven to the second conveying section 4. By driving the first universal joint 51 and the second universal joint 52 to rotate in opposite directions by the drive component 6, the operation of the first conveying section 3 and the second conveying section 4 can be controlled to transport the book block. Furthermore, by setting the first universal joint 51 and the second universal joint 52, the drive component 6 can always be driven to the first conveying section 3 and the second conveying section 4 after adjusting the distance between them.

[0041] Furthermore, the drive component 6 includes a drive motor 61 and a right-angle steering gear 62. The right-angle steering gear 62 is provided in pairs and is respectively connected to the first universal joint 51 and the second universal joint 52. The output shaft of the drive motor 61 is connected to the pair of right-angle steering gears 62 through a transmission component 63 to drive the pair of right-angle steering gears 62 to run synchronously. When the drive motor 61 is running, the pair of right-angle steering gears 62 are driven to run simultaneously through the transmission component 63, thereby driving the first universal joint 51 and the second universal joint 52 to rotate synchronously in opposite directions.

[0042] likeFigures 7-8 As shown, the adjustment component 7 includes several adjustment modules mounted on different supports 2. Each adjustment module includes a slide rail 71 arranged laterally and perpendicular to the transport direction of the book block. A first slider 72 and a second slider 73 are slidably mounted on the slide rail 71. A first transport section 3 is mounted on the first slider 72, and a second transport section 4 is mounted on the second slider 73. The module also includes a threaded rod 74 with a length direction parallel to the length direction of the slide rail 71. The first slider 72 and the second slider 73 are threadedly connected to different threaded portions on the threaded rod 74. By driving the threaded rod 74 to rotate, the first slider 72 and the second slider 73 can be controlled to move closer to or further away from each other on the slide rail 71, thereby adjusting the distance between the first transport section 3 and the second transport section 4.

[0043] To control the simultaneous operation of several adjustment modules, a drive shaft 75, parallel in length to the conveying direction of the book block, is rotatably mounted on the support 2. The drive shaft 75 and the ends of each positive and negative threaded rod 74 are connected via a first bevel gear set 76. The first bevel gear set 76 consists of a pair of meshing bevel gears. Driving the drive shaft 75 to rotate, the first bevel gear set 76 drives the several positive and negative threaded rods 74 to rotate synchronously, enabling the simultaneous operation of several adjustment modules. The support 2 is also equipped with a servo motor 77, and the output shaft of the servo motor 77 is connected to the drive shaft 75 via a second bevel gear set 78. Operating the servo motor 77 drives the drive shaft 75 to rotate a specified number of revolutions, thereby driving the positive and negative threaded rods 74 to rotate a specified number of revolutions, adjusting the distance between the first conveying section 3 and the second conveying section 4 to a specified distance.

[0044] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0045] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A book block compression and conveying mechanism, characterized by: The utility model relates to a book block pressing and conveying device, which comprises a base (1) and a plurality of supports (2) arranged on the base (1), a first conveying part (3) and a second conveying part (4) for pressing and conveying book blocks are arranged on the supports (2); the first conveying part (3) and the second conveying part (4) are movably arranged on the supports (2) and can move towards or away from each other, and the supports (2) are provided with an adjusting component (7) for adjusting the distance between the first conveying part (3) and the second conveying part (4).

2. A book block compression and transport mechanism according to claim 1, wherein: The second conveying part (4) comprises a support plate (41) movably arranged on the supports (2) and having a length direction consistent with the conveying direction, and the two ends of the support plate (41) are rotatably provided with a first sprocket (42) and a second sprocket (43); a conveying chain (44) is arranged on the first sprocket (42) and the second sprocket (43), and each link plate of the conveying chain (44) is provided with a pressing block (45) for clamping book blocks during conveying, and the first sprocket (42) is connected with the transmission module (5) through a connecting piece (47).

3. A book block compression and transport mechanism according to claim 2, wherein: Each pressing block (45) is provided with an anti-skid pattern (46) on the side in contact with the book block; the support plate (41) is provided with a protective plate (48) for preventing the upper half of the book block from being scattered during conveying.

4. The book spines pressing and conveying mechanism according to claim 1, wherein: The bottom of the first conveying part (3) and the second conveying part (4) is provided with a limiting component (8) for limiting the side edge of the lower half of the book block during conveying.

5. A book spines compression and conveying mechanism according to claim 4, characterized in that: The limiting component (8) comprises a fixed block (81) arranged on the support plate (41), a sliding rod (82) is transversely slidably arranged on the fixed block (81), the sliding direction of the sliding rod (82) is perpendicular to the conveying direction of the book block, a first limiting plate (83) is arranged on the sliding rod (82), and the first conveying part (3) is provided with a second limiting plate (810) for cooperating with the first limiting plate (83) to limit the book block during conveying.

6. A book spines compression and conveying mechanism according to claim 5, characterized in that: A movable rod (84) is slidably arranged on the fixed block (81) and has a sliding direction parallel to the conveying direction of the book block, a pushing block (85) is arranged on the movable rod (84) and used for pushing the sliding rod (82) to slide transversely on the fixed block (81), an inclined edge (86) is formed on the side of the pushing block (85) in contact with the end of the movable rod (84), and a spring (811) is arranged between the first limiting plate (83) and the fixed block (81) and used for applying force to the first limiting plate (83).

7. A book spines compacting and conveying mechanism according to claim 1, characterized in that: The base (1) is provided with a driving component (6) for controlling the simultaneous operation of the first conveying part (3) and the second conveying part (4), and the ends of the first conveying part (3) and the second conveying part (4) are drivingly connected with the driving component (6) through the transmission module (5).

8. A book spines compression and conveying mechanism according to claim 7, characterized in that: The transmission module (5) comprises a first universal shaft (51) in transmission connection with the first conveying part (3) and a second universal shaft (52) in transmission connection with the second conveying part (4); the driving part (6) comprises a driving motor (61) and a pair of right-angle gears (62) in transmission connection with the first universal shaft (51) and the second universal shaft (52) respectively, and the output shaft of the driving motor (61) is in transmission connection with the pair of right-angle gears (62) through a transmission part (63) to drive the pair of right-angle gears (62) to run synchronously.

9. A book spines compression and conveying mechanism according to claim 1, characterized in that: The adjusting part (7) comprises a plurality of adjusting modules arranged on different supports (2), and each adjusting module comprises a slide rail (71) arranged transversely and having a length direction perpendicular to the conveying direction of the book block, a first slide block (72) and a second slide block (73) slidably arranged on the slide rail (71), the first conveying part (3) being arranged on the first slide block (72) and the second conveying part (4) being arranged on the second slide block (73), and a positive and negative screw rod (74) having a length direction parallel to the length direction of the slide rail (71), the first slide block (72) and the second slide block (73) being threadedly connected with different threaded portions of the positive and negative screw rod (74) respectively.

10. A book block compression and transport mechanism according to claim 9, wherein: The support (2) is rotatably provided with a transmission shaft (75) having a length direction parallel to the conveying direction of the book block, the transmission shaft (75) being in transmission connection with the end portions of the positive and negative screw rods (74) through a first bevel gear set (76); the support (2) is further provided with a servo motor (77), and the output shaft of the servo motor (77) is in transmission connection with the transmission shaft (75) through a second bevel gear set (78).

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