阅读说明：本技术 一种胶装机自动进封面机构 (Automatic front cover feeding mechanism of cementing machine ) 是由 张宇 梁富华 曹明丽 余华俊 于 2021-07-21 设计创作，主要内容包括：本发明公开了一种胶装机自动进封面机构,包括机架,以及设于机架上的升降结构、压痕结构和输送结构,封面放置于升降机构上,且在输送结构的带动下经过压痕结构。针对人工放置封面,费时费力,容易出现失误的技术问题,本发明提供了一种胶装机自动进封面机构,它能代替人工放置封面,实现自动化进封面,使最终的胶装成型效果大大提高。(The invention discloses an automatic cover feeding mechanism of a cementing machine, which comprises a rack, a lifting structure, an indentation structure and a conveying structure, wherein the lifting structure, the indentation structure and the conveying structure are arranged on the rack, and a cover is placed on the lifting structure and passes through the indentation structure under the driving of the conveying structure. The invention provides an automatic cover feeding mechanism of a cementing machine, which can replace manual cover placing, realize automatic cover feeding and greatly improve the final cementing forming effect, aiming at the technical problems that manual cover placing is time-consuming and labor-consuming and is easy to make errors.)

1. The utility model provides an automatic front cover mechanism that advances of cementing machine which characterized in that: the cover is placed on the lifting mechanism and driven by the conveying structure to pass through the indentation structure.

2. The automatic cover feeding mechanism of the glue binding machine as claimed in claim 1, wherein: the lifting structure comprises a lifting platform capable of moving up and down relative to the frame and a first driving structure for driving the lifting platform to move, and a positioning structure for positioning the cover is arranged on the lifting platform.

3. The automatic cover feeding mechanism of the glue binding machine as claimed in claim 2, wherein: the first driving structure comprises

The gear is rotatably arranged on the frame;

the rack is arranged on the lifting platform and is meshed with the gear;

the first driving piece is used for driving the gear to rotate;

the lifting platform further comprises a guide structure used for limiting the action direction of the lifting platform.

4. The automatic cover feeding mechanism of the glue binding machine as claimed in claim 1, wherein: the indentation structure comprises an upper rotating shaft and a lower rotating shaft which are arranged on the rack, wherein at least one movable upper indentation wheel is arranged on the upper rotating shaft, a movable lower indentation wheel matched with the movable upper indentation wheel is arranged on the lower rotating shaft, and the indentation structure further comprises an adjusting structure for adjusting the positions of the movable upper indentation wheel and the movable lower indentation wheel in the same group.

5. The automatic cover feeding mechanism of the glue binding machine as claimed in claim 4, wherein: the adjusting structure comprises an adjusting block and a second driving structure used for driving the adjusting block to move back and forth, a clamping portion is arranged on the adjusting block, and a clamping groove matched with the clamping portion is formed in the movable upper indentation wheel or the movable lower indentation wheel along the circumferential direction of the movable upper indentation wheel or the movable lower indentation wheel.

6. The automatic cover feeding mechanism of the glue machine as claimed in claim 4 or 5, wherein: the device also comprises an indentation adjusting structure for adjusting the relative distance between the upper rotating shaft and the lower rotating shaft.

7. The automatic cover feeding mechanism of the glue binding machine as claimed in claim 1, wherein: the conveying structure comprises a fixing frame and a third driving structure, the fixing frame can move back and forth in the rack along the conveying direction of the cover, the third driving structure is used for driving the fixing frame to move, and a paper suction assembly is arranged on the fixing frame and used for sucking the cover.

8. The automatic cover feeding mechanism of the glue binding machine as claimed in claim 7, wherein: the paper suction assembly comprises

The air duct is arranged on the fixing frame;

the suckers are distributed on the air guide tube and communicated with the air guide tube;

the paper suction driving piece is communicated with the air guide pipe to exhaust air;

the sucking disc passes through the sucking disc connecting rod and links to each other with the air duct, sucking disc connecting rod inside is equipped with the passageway that is used for communicateing sucking disc and air duct, still including being used for ordering about air duct pivoted control structure.

9. The automatic cover feeding mechanism of the glue binding machine as claimed in claim 7, wherein: the paper suction device is characterized in that an air duct connecting plate is arranged on the fixing frame, the air duct connecting plate is connected with the air duct through a first air duct hose, the paper suction driving piece is arranged on the rack and is connected with the air duct connecting plate through a second air duct hose and communicated with the first air duct hose, and a drag chain is sleeved outside the second air duct hose.

10. The automatic cover feeding mechanism of the glue machine as claimed in claim 4 or 5, wherein: the conveying structure comprises a fixing frame and a third driving structure, the fixing frame can move back and forth along the conveying direction of the cover in the frame, the third driving structure is used for driving the fixing frame to move, a paper suction assembly is arranged on the fixing frame and used for adsorbing the cover, the third driving structure comprises a synchronous belt and a synchronous belt pressing plate fixedly connected to the fixing frame, the synchronous belt pressing plate is fixedly connected with the synchronous belt, and the synchronous belt is in synchronous transmission with the upper rotating shaft or the lower rotating shaft through a transmission structure.

Technical Field

The invention relates to the technical field of book binding, in particular to an automatic cover feeding mechanism of a cementing machine.

Background

The book block is clamped by the glue binding machine, and the book block is milled by a milling cutter to be grooved, is coated with glue, clamps a cover and is manufactured into a book, so that the book binding machine can be used for binding books such as books, photo albums, notebooks and hardcover books, is particularly suitable for the file binding purposes of mechanisms such as image-text manufacturing centers, libraries, photo buildings, small and medium-sized printing enterprises, design houses, research institutes, publishing centers, government offices, large enterprises and the like, is matched with high-quality output tools and high-quality printed books, is the best choice for binding short-version fast-assembly books and standard books, and can reflect the professional level of the files better in the glue binding effect.

Wherein, it is one of them very important step to place the front cover, and the position that the front cover was placed influences great to the mucilage binding shaping effect, places the front cover through the manual work now usually, and every mucilage binding book just will place a front cover, and manual operation is frequent, and the position of front cover is controlled by the manual work, the easy error that appears.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention provides an automatic cover feeding mechanism of a cementing machine, which can replace manual cover placing, realize automatic cover feeding and greatly improve the final cementing forming effect, aiming at the technical problems that manual cover placing is time-consuming and labor-consuming and is easy to make errors.

2. Technical scheme

In order to solve the problems, the technical scheme provided by the invention is as follows:

the utility model provides an automatic front cover mechanism that advances of cementing machine, includes the frame to and locate elevation structure, indentation structure and the transport structure in the frame, the front cover is placed on elevation mechanism, and passes through the indentation structure under transport structure's drive.

Optionally, the lifting structure includes a lifting platform capable of moving up and down relative to the frame, and a first driving structure for driving the lifting platform to move, and a positioning structure for positioning the cover is arranged on the lifting platform.

Optionally, the first driving structure comprises a gear rotatably mounted on the frame; the rack is arranged on the lifting platform and is meshed with the gear; the first driving piece is used for driving the gear to rotate; the lifting platform further comprises a guide structure used for limiting the action direction of the lifting platform.

Optionally, the indentation structure includes an upper rotating shaft and a lower rotating shaft which are arranged on the rack, the upper rotating shaft is provided with at least one movable upper indentation wheel, the lower rotating shaft is provided with a movable lower indentation wheel which is matched with the movable upper indentation wheel, and the indentation structure further includes an adjusting structure for adjusting the positions of the movable upper indentation wheel and the movable lower indentation wheel in the same group.

Optionally, the adjusting structure comprises an adjusting block and a second driving structure for driving the adjusting block to move back and forth, a clamping portion is arranged on the adjusting block, and a clamping groove matched with the clamping portion is formed in the movable upper indentation wheel or the movable lower indentation wheel along the circumferential direction of the movable upper indentation wheel or the movable lower indentation wheel.

Optionally, the device further comprises an indentation adjusting structure for adjusting the relative distance between the upper rotating shaft and the lower rotating shaft.

Optionally, transport structure makes a round trip the mount of action including the direction of delivery that can follow the front cover in the frame to and be used for ordering about the third drive structure that the mount moved, be equipped with on the mount and inhale the paper subassembly, in order to be used for adsorbing the front cover.

Optionally, the paper suction assembly comprises an air duct which is arranged on the fixed frame; the suckers are distributed on the air guide tube and communicated with the air guide tube; the paper suction driving piece is communicated with the air guide pipe to exhaust air; the sucking disc passes through the sucking disc connecting rod and links to each other with the air duct, sucking disc connecting rod inside is equipped with the passageway that is used for communicateing sucking disc and air duct, still including being used for ordering about air duct pivoted control structure.

Optionally, an air duct connecting plate is arranged on the fixing frame, the air duct connecting plate is connected with the air duct through a first air duct hose, the paper suction driving piece is arranged on the rack and connected with the air duct connecting plate through a second air duct hose and communicated with the first air duct hose, and a drag chain is sleeved outside the second air duct hose.

Optionally, transport structure makes a round trip the mount of action including the direction of delivery that can follow the front cover in the frame to and be used for ordering about the third drive structure that the mount moved, be equipped with on the mount and inhale the paper subassembly, in order to be used for adsorbing the front cover, the third drive structure includes the hold-in range to and link firmly the hold-in range clamp plate on the mount, the hold-in range clamp plate links firmly with the hold-in range, the hold-in range passes through drive structure and last pivot or lower pivot synchronous drive.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) this automatic front cover mechanism that advances of cementing machine passes through elevation structure, indentation structure and transport structure's cooperation, and operating personnel only need once only put many front covers on elevation structure, and follow-up removes the sola front cover to the exact position by transport structure is automatic, and can set up the indentation to make final cementing shaping effect improve greatly.

Drawings

Fig. 1 is a first structural schematic view of a lifting structure of an automatic cover feeding mechanism of a glue binding machine on a frame according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a lifting structure of an automatic cover feeding mechanism of a glue binding machine on a frame according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a positioning control structure of a lifting structure in an automatic cover feeding mechanism of a glue binding machine according to an embodiment of the present invention;

fig. 4 is a first schematic structural diagram of an indentation structure on a frame in an automatic cover feeding mechanism of a glue binding machine according to an embodiment of the present invention;

fig. 5 is a structural schematic view of a second impression structure on a frame in an automatic cover feeding mechanism of a glue binding machine according to an embodiment of the present invention;

FIG. 6 is a partial schematic view of FIG. 5 at A;

fig. 7 is a structural schematic view of a conveying structure on a frame in an automatic cover feeding mechanism of a glue binding machine according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a conveying structure in an automatic cover feeding mechanism of a glue binding machine according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a control structure of a conveying structure in an automatic cover feeding mechanism of a glue binding machine according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a transmission structure of a conveying structure in an automatic cover feeding mechanism of a glue binding machine according to an embodiment of the present invention;

1. a frame; 2. a lifting platform; 3. a gear; 4. a rack; 5. a first driving member; 6. an upper rotating shaft; 7. a lower rotating shaft; 8. moving the upper creasing wheel; 9. moving the lower creasing wheel; 10. an adjusting block; 11. a clamping part; 12. a clamping groove; 13. a fixed mount; 14. an air duct; 15. a suction cup; 16. a suction cup connecting rod; 17. the air duct connecting plate; 18. a first air guide hose; 20. a drag chain; 21. a synchronous belt; 22. pressing plates of the synchronous belt;

23. a guide rail; 24. a guide rail slider; 25. positioning a rod; 26. positioning a plate; 27. a movable block; 28. a first lead screw; 29. a guide bar; 30. a motor; 31. a second lead screw; 32. a spindle bracket; 33. adjusting the screw rod; 34. a threaded sleeve; 35. adjusting a hand wheel; 36. a first elastic member; 37. an upper paper pressing wheel; 38. pressing the paper wheel; 39. a slide rail; 40. a control lever; 41. a cam; 42. controlling the motor; 43. a second elastic member; 44. a drive shaft; 45. and a positioning table.

Detailed Description

For a further understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings 1-10.

With reference to the attached figure 1-

10, the automatic cover feeding mechanism of the glue binding machine of the embodiment comprises a frame 1, and a lifting structure, an indentation structure and a conveying structure which are arranged on the frame 1, wherein the cover is placed on the lifting structure and passes through the indentation structure under the driving of the conveying structure to replace manual operation,

this automatic front cover mechanism that advances of cementing machine passes through elevation structure, indentation structure and transport structure's cooperation, and operating personnel only need once only put many front covers on elevation structure, and follow-up removes the sola front cover to the exact position by transport structure is automatic, and can set up the indentation to make final cementing shaping effect improve greatly.

As an alternative of the invention, the lifting structure comprises a lifting platform 2 which can move up and down relative to the frame 1, and a first driving structure for driving the lifting platform 2 to move, and a positioning structure for positioning the cover is arranged on the lifting platform 2; elevation structure advances the in-process of front cover automatically, and elevating platform 2 can be according to the height of change self of front cover thickness to the change of compensation front cover thickness can place many front covers once, realizes the front cover of serialization and carries the action.

As an alternative of the present invention, the driving structure comprises a gear 3 rotatably mounted on the frame 1; the rack 4 is arranged on the lifting platform 2 and is meshed with the gear 3; the driving piece 5 is used for driving the gear 3 to rotate; still including the guide structure who is used for restricting 2 directions of action of elevating platform, through the cooperation of gear 3 and rack 4, compare in through cylinder direct drive for the lift height distance control of elevating platform 2 is more accurate, thereby the change of adaptable sola front cover thickness.

As an alternative of the present invention, in order to improve the stability when the gear 3 and the rack 4 are matched to control the lifting platform 2 to move up and down, two or more sets of the gear 3 and the rack 4 are provided, a plurality of gears 3 are mounted on the same rotating shaft, the driving member 5 is a motor for driving the rotating shaft to rotate, and in order to make the rotating speed of the gear 3 easier to control, the motor drives the rotating shaft to rotate through a speed reducer.

As an alternative of the present invention, the guiding structure includes a guide rail 23 disposed on the lifting platform 2, and a guide rail slider 24 disposed on the frame 1, the guide rail 23 is vertically fixed on the side wall of the lifting platform 2, and is disposed on both sides of the lifting platform 2, and the guide rail slider 24 is slidably mounted on the guide rail 23, so that the lifting platform 2 can only move up and down relative to the frame 1.

As an alternative of the present invention, the positioning structure includes a plurality of movable positioning rods 25 disposed on the lifting platform 2, and two positioning plates 26 disposed on the lifting platform 2, the plurality of positioning rods 25 are divided into two groups and symmetrically disposed on the left and right sides of the lifting platform 2, the two positioning plates 26 are disposed on the front and rear sides of the lifting platform 2, and a cover space for placing a cover is formed between the plurality of positioning rods 25 and the positioning plates 26, so that the front, rear, left and right positions of the cover are fixed.

As an alternative of the present invention, at least one of the two positioning plates 26 is movably connected to the elevating platform 2, so that when the cover is placed, the movable positioning plate 26 can be opened to put the cover in, and then the positioning plate 26 is reset to position the front and back of the cover.

As an alternative of the present invention, in order to realize the automatic control of the positioning rod 25, the present invention further includes a positioning control structure for adjusting the position of the positioning rod 25, the positioning control structure includes two movable blocks 27 and a movable block control structure for driving the movable blocks 27 to act, the positioning rods 25 are divided into two groups and respectively connected to the two movable blocks 27, the movable block control structure includes a first lead screw 28 in threaded fit with the movable blocks 27 and a guide rod 29 in sliding fit with the movable blocks 27, the first lead screw 28 is driven by a motor, the first lead screw 28 controls the movable blocks 27, so that the distance control of the positioning rod 25 is more accurate, the cover edge is prevented from being damaged by the overlarge movement range of the positioning rod 25, and the positioning rods 25 on the same movable block 27 can be controlled uniformly by the action of the movable blocks 27.

As an alternative of the present invention, in order to keep the two ends of the movable block 27 moving at the same speed, the same movable block 27 is in threaded fit with at least two first lead screws 28, the two first lead screws 28 are respectively screwed to the two ends of the movable block 27, and the plurality of first lead screws 28 are synchronously driven by the conveyor belt.

As an alternative of the present invention, the indentation structure includes an upper rotating shaft 6 and a lower rotating shaft 7 which are arranged on the frame 1, the lower rotating shaft 7 is driven by a motor which is arranged on the frame 1, certainly, the upper rotating shaft 6 can also be driven by a motor, at least one movable upper indentation wheel 8 is arranged on the upper rotating shaft 6, a movable lower indentation wheel 9 which is matched with the movable upper indentation wheel 8 is arranged on the lower rotating shaft 7, the present invention further includes an adjusting structure which is used for adjusting the positions of the same group of movable upper indentation wheels 8 and the movable lower indentation wheels 9, a fixed upper indentation wheel can also be arranged on the upper rotating shaft 6, and a fixed lower indentation wheel which is matched with the fixed upper indentation wheel is arranged on the lower rotating shaft 7; above-mentioned structural design for the position of creasing wheel is adjustable, in order to satisfy the indentation position of different covers.

As an alternative to the present invention, the adjustment structure comprises an adjustment block 10, and a second drive structure for driving the adjustment block 10 to move back and forth, the second drive structure comprising a motor 30, and a second screw rod 31 fixedly connected on the output shaft of the motor 30, the adjusting block 10 is screwed on the second screw rod 31, the second screw rod 31 and the lower rotating shaft 7 are arranged in the same direction, the adjusting block 10 is provided with a clamping part 11, a clamping groove 12 matched with the clamping part 11 is arranged on the upper moving creasing wheel 8 or the lower moving creasing wheel 9 along the circumferential direction, so that the adjusting block 10 can drive the lower indentation wheel 9 to move on the lower rotating shaft 7 through the matching of the clamping part 11 and the clamping groove 12 when moving horizontally, and the movable upper indentation wheel 8 arranged on the upper rotating shaft 6 is driven to synchronously move through the movable lower indentation wheel 9 through an indentation structure, and the rotary indentation of the movable upper indentation wheel 8 and the movable lower indentation wheel 9 can not be influenced.

As an alternative of the invention, the device also comprises an indentation adjusting structure for adjusting the relative distance between the upper rotating shaft 6 and the lower rotating shaft 7, the gap between the upper indentation wheel and the lower indentation wheel can be adjusted through the indentation adjusting structure, so that the indentation depth can be adjusted, and when indentation is not needed, the upper indentation wheel and the lower indentation wheel can be separated to cancel indentation.

As an alternative of the present invention, the cover book cover.

As an alternative of the present invention, the indentation adjustment structure includes an adjustment screw 33 rotatably connected to the spindle bracket 32, and a threaded sleeve 34 disposed on the frame 1, the adjustment screw 33 and the threaded sleeve 34 are in threaded fit, an adjustment hand wheel 35 is disposed at an end of the adjustment screw 33, two sets of the indentation adjustment structure are disposed on two sides of the indentation adjustment structure, and an operator can control the up-and-down position of the spindle bracket 32 by adjusting the hand wheel 35, so as to adjust the indentation depth.

As an alternative of the present invention, in order to overcome the machining error between the adjusting screw 33 and the threaded sleeve 34, the present invention further comprises a first elastic member 36, the first elastic member 36 drives the rotating shaft frame 32 to move towards the direction of the lower rotating shaft 7, the elastic member 36 is a spring, and the spring is sleeved on the screw 33 and is always in a compressed state between the frame 1 and the rotating shaft frame 32, so as to ensure the indentation effect between the upper indentation wheel and the lower indentation wheel on the cover.

As an alternative of the present invention, the cover pressing device further comprises an upper paper pressing wheel 37 and a lower paper pressing wheel 38, the upper paper pressing wheel 37 is disposed on the rotating shaft frame 32, of course, the upper paper pressing wheel 37 can also be mounted on the upper rotating shaft 6, the lower paper pressing wheel 38 is disposed on the lower rotating shaft 7, a rubber ring is sleeved on the upper paper pressing wheel 37 to avoid damaging the cover, and the cover is in a completely unfolded state during creasing through the arrangement of the upper paper pressing wheel 37 and the lower paper pressing wheel 38, so as to improve the creasing effect.

As an alternative of the present invention, the conveying structure includes a fixed frame 13 capable of moving back and forth on the frame 1 along the conveying direction of the cover, and a third driving structure for driving the fixed frame 13 to move, a paper suction assembly is arranged on the fixed frame 13 for sucking the cover, a slide rail 39 is arranged on the frame 1, the slide rail 39 is arranged along the conveying direction of the cover, and a slide block matched with the slide rail 39 is arranged on the fixed frame 13, so that the moving direction of the fixed frame 13 is limited by the slide rail 39.

As an alternative of the invention, the paper suction assembly comprises an air duct 14 arranged on the fixed frame 13; the sucking discs 15 are distributed on the air guide tube 14 and are communicated with the air guide tube 14; the paper suction driving part is communicated with the air guide pipe 14 to exhaust air, the paper suction driving part can be an adsorption air pump, the adsorption air pump works to enable the suckers 15 to form a negative pressure state so as to adsorb the cover, and the suckers 15 adsorb the cover at the same time, so that the adsorption force of the cover during conveying can be improved; the sucking disc 15 links to each other with the air duct 14 through sucking disc connecting rod 16 to certain interval has between messenger's sucking disc 15 and the air duct 14, sucking disc connecting rod 16 inside is equipped with the passageway that is used for communicateing sucking disc 15 and air duct 14, still including being used for ordering about 14 pivoted control structures of air duct, when adsorbing the cover, order about 14 rotations of air duct through control structure, so that sucking disc 15 pushes down and offsets with the cover, and not upwards inhale the cover through sucking disc 15's adsorption affinity, thereby the position when making the cover be inhaled by sucking disc 15 can not produce the skew, make the position in the cover transportation process go on according to the route of predetermineeing.

As an alternative of the present invention, the fixing frame 13 is provided with an air duct connecting plate 17, the air duct connecting plate 17 and the air duct 14 are connected through a first air duct hose 18, the paper suction driving member is arranged on the frame 1, the paper suction driving member is connected with the air duct connecting plate 17 through a second air duct hose and is communicated with the first air duct hose 18, the second air duct hose is sleeved with a drag chain 20, one end of the drag chain 8 is fixedly connected to the slide rail 5, the other end of the drag chain is fixedly connected to the fixing frame 13, the drag chain 20 is used for preventing the second air duct hose from abnormally deforming in the moving process of the fixing frame 13, the structural design aims at keeping the paper suction driving member and the air duct 14 in a stable communication state, and the paper suction driving member is arranged on the frame 1 instead of the fixing frame 13, so as to prevent the weight of the paper suction driving member from being applied on the fixing frame 13 to influence the stability of the fixing frame 13 in the moving process, the load of the fixing frame 13 is reduced, and although the second air guide hose is deformed in the operation process of the fixing frame 13, the normal passing of the air in the second air guide hose can be ensured under the protection effect of the drag chain 20.

As an alternative to the present invention, the control structure includes a control rod 40 having one end attached to the airway tube 14; a cam 41 which abuts against the other end of the control lever 40 to drive the control lever 40 to rotate; the control motor 42 is used for driving the cam 41 to rotate, the cam 41 is installed on an output shaft of the control motor 42, the cam 41 drives the free end of the control rod 40 to move up and down when rotating, so that the air guide tube 14 rotates, the control device further comprises a second elastic piece 43 used for driving the control rod 40 to reset, the elastic piece 43 is a spring, one end of the spring is buckled on the fixed frame 13, the other end of the spring is buckled on the free end of the control rod 40 and is in a compressed state, the elastic acting force generated by the spring always drives the free end of the control rod 40 to move upwards, so that the control rod 40 always abuts against the cam 41, and therefore the sensitivity of the control rod 40 driven by the cam 41 is improved.

As an alternative of the present invention, the third driving structure includes a synchronous belt 21 and a synchronous belt pressing plate 22 fixedly connected to the fixed frame 13, the synchronous belt pressing plate 22 is fixedly connected to the synchronous belt 21, the synchronous belt 21 is synchronously driven with the upper rotating shaft 6 or the lower rotating shaft 7 through a transmission structure, the transmission structure is a transmission shaft 44 rotatably connected to the frame 1, the transmission shaft 44 is disposed right above the lower rotating shaft 7 and realizes synchronous transmission with the lower rotating shaft 7 through the synchronous belt, one end of the synchronous belt 21 is connected to a gear of the transmission shaft 44 to realize synchronous transmission with the transmission shaft 44, and finally, the rotating speed of the creasing wheel and the power source of the paper suction assembly are both from the same motor, and the moving speed is kept consistent, so as to prevent the paper from being damaged due to being pulled through the creasing structure under the driving of the conveying structure.

As an alternative of the present invention, a positioning table 45 is disposed on the machine frame 1 at the rear side of the indentation structure for placing a cover passing through the indentation structure, so that an operator can take the cover after indentation uniformly.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.