CN214520413U - Book cutting equipment - Google Patents

Abstract

The utility model relates to a books cutting equipment, including cutting the equipment body, be equipped with on the cutting equipment body and cut the sword, actuating mechanism, be equipped with the processing mesa on the cutting equipment body, positioner includes the setting element, straight line driver one, it is equipped with transmission device to cut the equipment body, transmission device includes the push pedal, straight line driver two, the processing mesa is equipped with the location dog, the cutting equipment body is equipped with extracting device, extracting device includes the slip table, fixture includes fixed arm lock, rotate the arm lock, be equipped with adjustment mechanism on the slip table, adjustment mechanism includes the saddle, the locking piece includes the rotary drum, the bolt. By arranging the positioning device, the cutting equipment can accurately position the book, and the cutting quality of the cutting equipment to the book is improved; the trimming of the book by the trimming equipment is more orderly by arranging the flat pressing mechanism; through setting up extracting device, be convenient for take out the books that will cut the completion from processing mesa.

Description

Book cutting equipment

Technical Field

The application relates to the technical field of book processing, in particular to book cutting equipment.

Background

The book is required to be processed at the side edges in the production process, so that the corners of the book are neat, and the attractiveness of the book is improved. A book edge trimmer is equipment for trimming edges of produced books and is mainly used for correcting the edges and corners of thick books so that the books are complete in size and edges and corners.

After books are generally positioned by personnel and manually, the conventional book edge trimmer starts a cutter on the book edge trimmer to cut the side of the books.

According to the related technology, the books are positioned manually by personnel, the accuracy is low, and the phenomenon of wrong cutting is easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to improve the degree of accuracy to the books location, this application provides a books cutting equipment.

The application provides a books cutting equipment adopts following technical scheme:

the utility model provides a books cutting equipment, includes the cutting equipment body, be equipped with the actuating mechanism that is used for cutting the sword that cuts, the drive of books cuts the sword motion on the cutting equipment body, be equipped with processing mesa, positioner on the cutting equipment body, positioner includes setting element, linear actuator one, the setting element symmetry is equipped with two, two the setting element is located the both sides of processing mesa respectively, two the setting element carries out in opposite directions or back of the body motion, two by the drive of linear actuator one the side that the setting element is relative all is equipped with the location mouth, the inner wall of location mouth is used for pasting mutually with the lateral wall of books.

Through adopting above-mentioned technical scheme, positioner's setting for personnel can stack books in the location mouth in advance or just to location mouth department, and through a linear actuator drive two setting elements be close to each other, with the intermediate position of books propelling movement processing mesa, make two relative both sides inner walls of location mouth offset with the wall of the both sides dorsad of books respectively, other both sides walls paste with the lateral wall of books respectively, accomplish the accurate positioning to books, and is comparatively convenient.

Preferably, the opening of the positioning opening is divergent.

By adopting the technical scheme, the opening shape of the positioning opening is arranged, so that books right facing the positioning opening are easier to enter the positioning opening.

Preferably, the processing table top is provided with a scratch-resistant layer.

Through adopting above-mentioned technical scheme, prevent the setting of scraping the layer for books are being positioned the in-process that the piece promoted, are difficult for being processed the mesa fish tail.

Preferably, the cutting equipment body is equipped with the transmission device who is used for transmitting books, transmission device includes the straight line driver two that the push pedal, drive push pedal removed, the face of push pedal is used for propping up with the books lateral wall in order to push away books to the processing mesa.

Through adopting above-mentioned technical scheme, personnel's accessible is higher with transmission device books propelling movement to the processing mesa, the degree of accuracy through the machine promotion, and the books of being convenient for are aimed at with positioner.

Preferably, the processing table top is provided with a positioning stop block, and the side wall of the positioning stop block is used for abutting against the side wall of the book deviating from the push plate.

Through adopting above-mentioned technical scheme, the location dog can block the books that the transmission device propelling movement was come, avoids books because of inertia spontaneous removal, makes this cutting equipment more accurate to the preliminary location of books.

Preferably, the cutting equipment body is equipped with and is used for the extracting device who takes out books from the processing mesa, extracting device includes the slip table, is used for the fixture of centre gripping books, cutting equipment body top surface is equipped with the groove of dodging of the books below that supplies fixture to stretch into, dodge the groove to the straight processing mesa of extension, slip table and cutting equipment body sliding connection, the slip table is removed by setting up three drives of sharp driver on the cutting equipment body.

Through adopting above-mentioned technical scheme, extracting device will stretch into through fixture and dodge in the groove, and it is fixed with the upper and lower two surface centre gripping of books, the centre gripping is fixed the back, through the slip of slip table, will cut the books that finish, takes out from the processing mesa voluntarily to carry unloading department, accomplish the unloading of processing the books that finish automatically, it is comparatively convenient.

Preferably, fixture includes fixed arm lock, rotates the arm lock, fixed arm lock and slip table fixed connection, it rotates the arm lock and rotate with the slip table and be connected, the bottom surface of fixed arm lock, the top surface of rotating the arm lock are used for respectively offsetting with the upper and lower two surfaces of books, it is rotated by the drive arrangement drive that sets up on the slip table to rotate the arm lock.

By adopting the technical scheme, the clamping mechanism drives the rotating clamping arm to rotate by the driving device, so that the rotating clamping arm is close to the fixed clamping arm, books on the processing table top are pushed to the bottom surface of the fixed clamping arm, the bottom surface of the fixed clamping arm and the top surface of the rotating clamping arm are respectively used for abutting against the upper surface and the lower surface of the books, and the books are clamped and fixed.

Preferably, be equipped with the adjustment mechanism of adjusting fixed arm lock height on the slip table, adjustment mechanism includes the saddle, is used for locking the locking piece on the slip table with the saddle, fixed arm lock and saddle fixed connection, saddle and slip table sliding connection, the slip direction of saddle is along vertical direction.

Through adopting above-mentioned technical scheme, adjustment mechanism's setting can be adjusted the height of fixed arm lock, makes fixture can pile to carry out the centre gripping to different thickness books, and is comparatively convenient.

Preferably, the locking piece includes rotary drum, bolt, the saddle is equipped with the projection, the rotary drum rotates to cup joint on the projection, the bolt is worn to be equipped with by the rotary drum, bolt, rotary drum, projection three are coaxial, bolt and projection threaded connection, the bolt is used for sticising rotary drum and saddle mutually, the saddle can't slide along the horizontal direction, be equipped with the meshing tooth on the slip table, the meshing tooth is equipped with a plurality ofly along vertical direction, the rotary drum is coaxial to be set firmly be used for with the gear of meshing tooth meshing.

Through adopting above-mentioned technical scheme, personnel can unscrew the bolt, make the rotary drum can the free rotation, and through carrying the slider between, make the slider remove to required height, after this, personnel sticiss the rotary drum to fix on the slider through rotating the bolt, make the rotary drum unable rotation, then through the cooperation of gear and meshing tooth with carry on spacingly to the height of rotary drum, slider to make fixed arm lock stop at present height. And finishing the height adjustment of the fixed clamping arm.

Preferably, the cutting equipment body is provided with a flat pressing mechanism, the flat pressing mechanism comprises a linear driver IV and a flat pressing block driven by the linear driver IV to move up and down, and the bottom surface of the flat pressing block is used for abutting against the top wall of a book.

Through adopting above-mentioned technical scheme, the setting of concora crush mechanism can press the books that pile up to the leveled state with the cooperation of processing mesa, prevents simultaneously that books from appearing the skew at the in-process that cuts to when cutting the sword and cutting books, make the edge after cutting of books more neat.

In summary, the present application includes at least one of the following beneficial technical effects:

by arranging the positioning device, the cutting equipment can accurately position the book, and the cutting quality of the cutting equipment to the book is improved;

the flat pressing mechanism is arranged, so that stacked books can be pressed to be flat, and the edges of the books are trimmed more orderly;

through setting up extracting device, be convenient for take out the books that will cut the completion from processing mesa.

Drawings

Fig. 1 is a first perspective view of embodiment 1 of the present application.

Fig. 2 is a schematic structural diagram of a positioning device according to embodiment 1 of the present application.

Fig. 3 is a schematic structural view of the platen mechanism according to embodiment 1 of the present application.

Fig. 4 is a second perspective view of embodiment 1 of the present application.

Fig. 5 is a first structural schematic diagram of a material extracting apparatus according to embodiment 1 of the present application.

Fig. 6 is a second structural schematic diagram of a material extracting apparatus according to embodiment 1 of the present application.

Fig. 7 is an enlarged view of fig. 5 at a.

Fig. 8 is a schematic structural view of a material taking device according to embodiment 2 of the present application.

Description of reference numerals: 1. cutting the equipment body; 11. cutting knife; 12. a drive mechanism; 13. a processing cavity; 14. processing a table top; 15. a scratch-resistant layer; 16. positioning a stop block; 17. an avoidance groove; 18. avoiding the mouth; 19. a transmission table; 2. a positioning device; 21. a positioning member; 22. a first linear driver; 23. positioning the opening; 3. a material taking device; 31. a sliding table; 32. a clamping mechanism; 321. fixing the clamping arm; 322. rotating the clamping arm; 323. a drive device; 33. a third linear driver; 34. a conveyor belt; 35. a connecting plate; 36. a vertical chute; 4. an adjustment mechanism; 41. a slider; 42. a locking member; 421. a rotating drum; 422. a bolt; 423. a convex column; 424. meshing teeth; 425. a gear; 5. a flat pressing mechanism; 51. a linear driver IV; 52. flattening and pressing the block; 6. a transmission device; 61. pushing the plate; 62. and a second linear driver.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses books cutting equipment. Referring to fig. 1, the book cutting device comprises a cutting device body 1, wherein the cutting device body 1 is provided with a processing cavity 13 and a processing table-board 14, the processing table-board 14 is located in the processing cavity 13, and the processing cavity 13 penetrates through the side face of the cutting device body 1 along the two sides of the horizontal direction. The cutting device body 1 is provided with a cutting knife 11 and a driving mechanism 12 for cutting books, the cutting knife 11 is located above the processing table board 14, and the cutting knife 11 is driven by the driving mechanism 12 to move towards the processing table board 14 so as to cut the books on the processing table board 14.

Referring to fig. 1, the cutting device body 1 is provided with a transmission device 6 for feeding and transmitting stacked books, the transmission device 6 comprises a push plate 61 and a second linear driver 62 for driving the push plate 61 to move, and the second linear driver 62 is fixedly connected with the cutting device. The cutting equipment is provided with a transmission table board 19, the transmission table board 19 is the same as and adjacent to the processing table board 14 in height, the second linear driver 62 is located on the transmission table board 19, the second linear driver 62 can be any one of an air cylinder, an oil cylinder and an electric cylinder, and the air cylinder is adopted in the embodiment. The face of push pedal 61 and the piston rod fixed connection of the second 62 of linear actuator, the face that push pedal 61 deviates from the second 62 of linear actuator is used for propping up with the books lateral wall, and personnel's accessible second 62 of linear actuator drives push pedal 61 motion, will pile up on the books propelling movement of transmission mesa 19 on processing mesa 14.

Referring to fig. 1, the processing table 14 is provided with a positioning block 16, when the conveying device 6 conveys the book to the processing table 14, the side wall of the positioning block 16 abuts against the side wall of the book away from the push plate 61 to position the book and determine the position of the book on the processing table 14.

Referring to fig. 1 and 2, a positioning device 2 is arranged on the cutting equipment body 1, the positioning device 2 is arranged on each of two sides of the processing table top 14, the positioning device 2 comprises a positioning piece 21 and a linear driver I22, and the linear driver I22 is fixedly connected with the outer wall of the cutting equipment body 1. Two positioning devices 2 are symmetrically arranged, and the two positioning devices 2 are respectively positioned at two sides of the processing table top 14. The first linear actuator 22 is one of an air cylinder, an oil cylinder and an electric cylinder, and in the embodiment, the first linear actuator 22 is an air cylinder. The piston rod of the first linear actuator 22 penetrates into the processing cavity 13, and the two positioning pieces 21 are respectively fixed at the end parts of the piston rods of the first linear actuators 22. The two positioning pieces 21 are driven by two linear drivers 22 respectively to synchronously move towards or away from each other. The bottom height of the positioning piece 21 is higher than the height of the processing table top 14, and the height difference between the two positioning pieces 21 and the processing table top 14 is smaller than the thickness of a single book.

The tip that two setting elements 21 are relative all is equipped with location mouth 23, the shape of location mouth 23 agrees with the shape of books, the lateral wall of books pastes with the three side inner walls of location mouth 23, the opening of location mouth 23 is the form of expanding gradually, so that when setting element 21 received linear actuator 22 drive to remove along the horizontal direction, books can get into location mouth 23, difficult jamming phenomenon takes place, be equipped with on the processing mesa 14 and prevent scraping layer 15, prevent scraping layer 15 and adopt the epoxy paint coating to form, the smoothness on its surface is higher, prevent scraping layer 15 and be difficult at the in-process that books removed, with the surperficial fish tail of books.

Referring to fig. 1, the cutting device body 1 is provided with a flat pressing mechanism 5, and the flat pressing mechanism 5 is positioned on the top wall of a processing cavity 13. Referring to fig. 3, the platen press mechanism 5 includes a fourth linear actuator 51, and a platen press block 52 driven by the fourth linear actuator 51 to move up and down, wherein the fourth linear actuator 51 may be one of an air cylinder, an oil cylinder, and an electric cylinder, and in this embodiment, the fourth linear actuator 51 is an air cylinder. The piston rod of the four 51 linear drivers is vertically downwards arranged, the piston rod of the four 51 linear drivers is fixedly connected with the top of the flat pressing block 52, the bottom surface of the flat pressing block 52 is used for abutting against the top wall of stacked books to flat-press the stacked books, and the stacked books are pressed to a flat state, so that when the cutting knife 11 cuts the books, the edges of the books after cutting are more tidy.

Referring to fig. 4 and 5, the cutting device body 1 is provided with a material taking device 3 for taking out books from the processing table surface 14, the material taking device 3 and the conveying device 6 are respectively positioned on two sides of the processing table surface 14, and the material taking device 3 comprises a sliding table 31 and a clamping mechanism 32 for clamping and stacking the upper surface and the lower surface of the books. The sliding table 31 is connected with the cutting device body 1 in a sliding mode, the sliding direction of the sliding table 31 is along the moving direction of the push plate 61, a third linear driver 33 is fixedly arranged on the cutting device body 1, the third linear driver 33 can be any one of an air cylinder, an oil cylinder and an electric cylinder, the third linear driver 33 is an air cylinder in the embodiment, the sliding table 31 is fixedly connected with a piston rod of the third linear driver 33, and the length direction of the piston rod of the third linear driver 33 is along the sliding direction of the sliding table 31.

Referring to fig. 4 and 5, the top surface of the cutting device body 1 is provided with an avoiding groove 17 below the book which is extended by the clamping mechanism 32, the length direction of the avoiding groove 17 is along the moving direction of the push plate 61, the avoiding groove 17 extends to the straight processing table top 14, especially extends to the book placing position on the processing table top 14, the avoiding groove 17 is located at the middle position of the processing table top 14, the positioning stop block 16 is provided with an avoiding opening 18, the avoiding opening 18 divides the positioning stop block 16 into two parts, the avoiding opening 18 is located above the avoiding groove 17, and the width of the avoiding groove 17 is smaller than that of the book.

Referring to fig. 4 and 5, the clamping mechanism 32 is located on the sliding table 31, the clamping mechanism 32 includes a fixed clamping arm 321 and a rotating clamping arm 322, the length directions of the fixed clamping arm 321 and the rotating clamping arm 322 are along the sliding direction of the sliding table 31, the rotating clamping arm 322 is located below the fixed clamping arm 321 and in the avoiding slot 17, and the fixed clamping arm 321 is located above the avoiding slot 17. The fixed clamping arm 321 is fixedly connected with the sliding table 31 through an adjusting mechanism 4 arranged on the sliding table 31, the rotating clamping arm 322 is rotatably connected with the sliding table 31, a rotating shaft of the rotating clamping arm 322 is horizontally and vertically arranged on the sliding direction of the sliding table 31, the height of the fixed clamping arm 321 is higher than the total height of stacked books, the bottom surface of the fixed clamping arm 321 and the top surface of the rotating clamping arm 322 are respectively used for abutting against the upper surface and the lower surface of the books, a driving device 323 is fixedly arranged on the sliding table 31, and the rotating clamping arm 322 is driven to rotate by the driving device 323.

Referring to fig. 5 and 6, the driving device 323 adopts a stepping motor, an output shaft of the driving device 323 is fixedly connected to the rotating arm 322 and is coaxial with a rotating shaft of the rotating arm 322, and a person can operate the driving device 323 to move the rotating arm 322 away from or close to the fixed arm 321 to clamp and release a book. It should be noted that the fixed clamping arms 321 are spaced from the top wall of the book stacked on the processing platform 14 by a distance greater than the height of the positioning stoppers 16, so that the rotating clamping arms 322 can push the book above the positioning stoppers 16, and the clamping mechanism 32 can smoothly transport the cut book. A passing space for the stacked books to pass through is formed between the rotating clip arm 322 and the fixed clip arm 321. Personnel's accessible operation extracting device 3 takes out books from processing mesa 14 to on the transmission band 34 of setting on cutting equipment body 1, through transmission band 34 with books transmission to unloading department, it is comparatively convenient.

Referring to fig. 5 and 6, an adjusting mechanism 4 for adjusting the height of the fixed arm lock 321 is disposed on the sliding table 31, the adjusting mechanism 4 includes a slider 41 and a locking piece 42, two sides of the sliding table 31 are fixedly connected with connecting plates 35, the surfaces of the two connecting plates 35 are vertical surfaces, a vertical sliding groove 36 is disposed on the connecting plate 35, two ends of the slider 41 in the horizontal direction are respectively embedded into the two vertical sliding grooves 36 to establish sliding connection with the connecting plates 35 (the sliding table 31), and the fixed arm lock 321 is fixedly connected with the slider 41 toward the side wall of the push plate 61, so that the height of the fixed arm lock 321 is adjustable.

Referring to fig. 6 and 7, two locking pieces 42 are disposed at two ends of the slider 41 in the length direction, each locking piece 42 includes a rotating cylinder 421 and a bolt 422, a boss 423 is fixedly disposed on a side wall of the slider 41, the rotating cylinder 421 is rotatably sleeved on the boss 423, the bolt 422 is disposed at an end of the rotating cylinder 421 in a penetrating manner, the bolt 422, the rotating cylinder 421 and the boss 423 are coaxial, the bolt 422 penetrates through an end wall of the rotating cylinder 421 and is in threaded connection with the boss 423, a space is formed between an end of the boss 423 and an axial inner wall of the rotating cylinder 421, and a screw head of the bolt 422 is used for abutting against the rotating cylinder 421 to press and fix the rotating cylinder 421 on the slider 41. Due to the limitation of the side wall of the vertical sliding groove 36 to the end of the slider 41, the slider 41 cannot slide in the horizontal direction. The connecting plate 35 is fixedly provided with a plurality of engaging teeth 424, the engaging teeth 424 are vertically arranged, and the rotating drum 421 is coaxially and fixedly connected with a gear 425 engaged with the engaging teeth 424.

The person can loosen the bolt 422 to enable the drum 421 to rotate freely, and lift the slider 41 to move the slider 41 to the required height, after that, the person can press and fix the drum 421 on the slider 41 by rotating the bolt 422 to prevent the drum 421 from rotating, and then limit the height of the drum 421 and the slider 41 by the matching of the gear 425 and the engaging tooth 424, so as to make the fixed arm 321 stay at the current height. The height adjustment of the fixing clip arm 321 is completed.

The implementation principle of this application embodiment books cutting equipment does: at first personnel will pile up books and place on transmission mesa 19, 16 departments of location dog are pushed with books to transmission device 6, later positioner 2 with books propelling movement to accurate processing department, platen press constructs 5 and supports the pressure to the top surface of books, the sword 11 of cutting receives the drive of actuating mechanism 12 to the limit of cutting of books, after the limit of cutting is accomplished to books, press from both sides through extracting device 3 and put the books on transmission band 34, transmit unloading department through transmission band 34, accomplish the processing, this equipment can once process many books, it is comparatively green high-efficient.

Example 2:

this example differs from example 1 in that: referring to fig. 8, the driving device 323 adopts an air cylinder, the driving device 323 is located below the rotating clamping arm 322, the end of the piston rod of the driving device 323 abuts against the bottom surface of the rotating clamping arm 322, and a person can operate the driving device 323 to extend the piston rod of the driving device 323 upwards to push the rotating clamping arm 322 to be close to the fixed clamping arm 321, so as to clamp a book.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a books cutting equipment, includes cutting equipment body (1), be equipped with on cutting equipment body (1) and be used for cutting the book cut sword (11), drive and cut actuating mechanism (12) that sword (11) moved, its characterized in that: be equipped with processing mesa (14), positioner (2) on cutting equipment body (1), positioner (2) are including setting element (21), linear actuator one (22), setting element (21) symmetry is equipped with two, two setting element (21) are located the both sides of processing mesa (14) respectively, two setting element (21) are carried out in opposite directions or back of the body motion mutually by the drive of linear actuator one (22), two the side that setting element (21) is relative all is equipped with location mouth (23), the inner wall of location mouth (23) is used for pasting mutually with the lateral wall of books.

2. A book cutting apparatus as claimed in claim 1, wherein: the opening of the positioning opening (23) is in a gradually expanding shape.

3. A book cutting apparatus as claimed in claim 1, wherein: the processing table top (14) is provided with a scratch-resistant layer (15).

4. A book cutting apparatus as claimed in claim 1, wherein: cutting equipment body (1) is equipped with transmission device (6) that are used for transmitting books, transmission device (6) include push pedal (61), the straight line driver two (62) that drive push pedal (61) removed, the face of push pedal (61) is used for offsetting to process mesa (14) with books lateral wall with books.

5. A book cutting apparatus as claimed in claim 4, wherein: the processing table top (14) is provided with a positioning stop block (16), and the side wall of the positioning stop block (16) is used for abutting against the side wall of the book deviating from the push plate (61).

6. A book cutting apparatus as claimed in claim 4, wherein: cutting equipment body (1) is equipped with extracting device (3) that are used for taking out books from processing mesa (14), extracting device (3) include slip table (31), fixture (32) that are used for centre gripping books, cutting equipment body (1) top surface is equipped with the books below that supplies fixture (32) to stretch into and dodges groove (17), dodge groove (17) to extending and directly process mesa (14), slip table (31) and cutting equipment body (1) sliding connection, slip table (31) are removed by setting up three (33) drives of the sharp driver on cutting equipment body (1).

7. A book cutting apparatus as claimed in claim 6, wherein: fixture (32) are including fixed arm lock (321), rotate arm lock (322), fixed arm lock (321) and slip table (31) fixed connection, it rotates arm lock (322) and slip table (31) to rotate and is connected, the bottom surface of fixed arm lock (321), the top surface of rotating arm lock (322) are used for respectively offsetting with the upper and lower two surfaces of books, it is rotated by drive arrangement (323) drive setting on slip table (31) to rotate arm lock (322).

8. A book cutting apparatus as claimed in claim 6, wherein: be equipped with adjustment mechanism (4) of adjusting fixed arm lock (321) height on slip table (31), adjustment mechanism (4) include slider (41), be used for locking piece (42) on slip table (31) with slider (41), fixed arm lock (321) and slider (41) fixed connection, slider (41) and slip table (31) sliding connection, vertical direction is followed to the slip direction of slider (41).

9. A book cutting apparatus as claimed in claim 8, wherein: locking piece (42) include rotary drum (421), bolt (422), slider (41) are equipped with projection (423), rotary drum (421) rotate to cup joint on projection (423), rotary drum (421) wear to be equipped with bolt (422), rotary drum (421), projection (423) three are coaxial, bolt (422) and projection (423) threaded connection, bolt (422) are used for sticising rotary drum (421) and slider (41) mutually, slider (41) can't slide along the horizontal direction, be equipped with meshing tooth (424) on slip table (31), meshing tooth (424) are equipped with a plurality ofly along vertical direction, rotary drum (421) are coaxial to be set firmly and are used for gear (425) with meshing tooth (424) meshing.

10. A book cutting apparatus as claimed in claim 1, wherein: the cutting equipment comprises a cutting equipment body (1), and is characterized in that a flat pressing mechanism (5) is arranged on the cutting equipment body (1), the flat pressing mechanism (5) comprises a linear driver four (51) and a flat pressing block (52) driven by the linear driver four (51) to move up and down, and the bottom surface of the flat pressing block (52) is used for being abutted to the top wall of a book.

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