Cover paper feeding and pairing device

Abstract

The invention relates to a cover paper feeding pairing device which comprises a rack, an inside page input structure, an inside page output structure, a cover input structure and a cover output structure, the inside page input structure, the inside page output structure, the cover input structure and the cover output structure are all connected to the middle of the rack, the cover input structure is located above the inside page input structure, and the cover output structure is located above the inside page output structure. The output end of the cover output structure is located above the output end of the inside page output structure, inside pages are put in from the input end of the inside page input structure and sent out from the output end of the inside page output structure, the cover is placed at the position of the inside page input structure, and a cover is sent out from the output end of the inside page output structure and placed above the inside pages. The output end of the cover output structure is provided with a cover paper outlet and guide cover plate used for preventing cover paper from flying. The equipment can stack and align the inner pages and the covers, can detect whether the covers are double or not, improves the manual working efficiency, reduces the working hours, and is low in error rate.

Description

Technical Field

[0001] The present invention relates to the technical field of book assembly, and particularly to a cover paper feeding and matching device. Background Art

[0002] With the development of digital printing, the inner pages of brochures in the original traditional process can now be output in sets. However, due to the pursuit of high quality, the covers still need to be printed separately. Therefore, manual cover matching is still required during finished product binding. In the current production business process, the inner pages are generally completed on low-cost printing machines, and the covers are completed on high-cost printing machines. When entering the binding equipment, the operator needs to manually match the covers and inner pages into sets and send them into the stapling and folding machine. When there are many orders, manual operation will affect work efficiency and cause error rates. Currently, some products use a paper feed roller method to insert the cover, and an inner page waiting area needs to be set before the cover enters. At the same time, because of the paper feed roller method, when using special cover paper, it will cause damage to the printed content on the paper surface. The storage capacity of the cover paper feeding tray is limited, generally less than 100 sheets, and paper needs to be added frequently. The paper feed roller is prone to failure when transporting certain papers, resulting in errors. Summary of the Invention

[0003] The present invention provides a cover paper feeding and matching device, aiming to solve the problems of low work efficiency and high error rate in matching covers and inner pages in the prior art.

[0004] The present invention provides a cover paper feeding and matching device, including a frame, an inner page input structure, an inner page output structure, a cover input structure, and a cover output structure. The inner page input structure, the inner page output structure, the cover input structure, and the cover output structure are all connected in the middle of the frame. The cover input structure is located above the inner page input structure. The output end of the cover output structure is located above the output end of the inner page output structure. The inner pages are put in from the input end of the inner page input structure and sent out from the output end of the inner page output structure. The covers are placed at the inner page input structure and one cover is sent out from the output end of the inner page output structure and placed above the inner pages. The output end of the cover output structure is provided with a cover paper output guiding cover plate for preventing cover paper from flying.

[0005] As a further improvement of the present invention, the frame includes a left base plate and a right base plate, the left base plate and the right base plate are arranged in parallel, and the inner page input structure, the inner page output structure, the cover input structure, and the cover output structure are arranged between the left base plate and the right base plate.

[0006] As a further improvement of the present invention, the inner page input structure includes a first support plate, a second support plate, a paper feeding drive motor, a paper feeding synchronous pulley, a paper feeding synchronous belt, a paper feeding driving pulley set, a paper feeding guide plate, a paper feeding belt and a paper feeding idler pulley set. The first support plate is connected to the right base plate, the second support plate is connected to the left base plate, the paper feeding driving pulley set is arranged at one end of the first support plate, the paper feeding idler pulley set is arranged at the other end of the first support plate, the paper feeding belt is sleeved on the paper feeding driving pulley set and the paper feeding idler pulley set, the paper feeding guide plate is arranged on the top of the paper feeding belt, the paper feeding drive motor is arranged on the left base plate, the paper feeding synchronous pulley is arranged on the left base plate and connected to the output end of the paper feeding drive motor, and the paper feeding synchronous pulley is connected to the paper feeding driving pulley set through the paper feeding synchronous belt.

[0007] As a further improvement of the present invention, the inner page input structure further includes a third support plate, a paper feeding fixed baffle, a paper feeding movable baffle and a linear guide rail. The two ends of the third support plate are respectively connected to the first support plate and the second support plate. The third support plate is located in the middle of the paper feeding belt. The paper feeding fixed baffle is vertically connected to one end of the third support plate. The paper feeding movable baffle is arranged on the linear guide rail. The linear guide rail is arranged on the third support plate. The paper feeding movable baffle is arranged in parallel with the paper feeding fixed baffle.

[0008] As a further improvement of the present invention, it further includes a paper feeding inductor. The paper feeding inductor is arranged on the frame and is located directly above the output end of the inner page input structure.

[0009] As a further improvement of the present invention, the inner page output structure includes an inner page paper pressing member, an inner page paper output belt, an inner page paper output guide plate, an inner page paper output drive motor, an inner page paper output synchronous belt and an inner page paper output driving pulley assembly. The inner page paper pressing member is connected between the left base plate and the right base plate. The inner page paper output drive motor is arranged on the left base plate. The inner page paper output driving pulley assembly is arranged between the left base plate and the right base plate and is connected to the output end of the inner page paper output drive motor through the inner page paper output synchronous belt. The inner page paper output belt is sleeved on the inner page paper output driving pulley assembly and the paper feeding driving pulley set. The inner page paper output guide plate is arranged on the inner page paper output belt.

[0010] As a further improvement of the present invention, the cover input structure includes a cover tray, a cover alignment component, a suction box component, a cover paper feeding drive motor, a cover paper feeding synchronous belt, a cover paper feeding baffle, a cover paper feeding synchronous pulley, a tray lifting motor, a tray synchronous belt, a tray synchronous pulley and a slider. The cover paper feeding drive motor and the tray lifting motor are arranged on the right substrate. A vertical tray guide rail is provided on the right substrate. The slider is slidably connected to the tray guide rail. The cover tray is connected to the slider. The tray lifting motor is connected to the tray synchronous pulley arranged at the upper end of the tray guide rail through the tray synchronous belt. The suction box component is arranged between the left substrate and the right substrate. The suction box component is located at the front end of the cover tray. The suction box component is connected to the cover paper feeding synchronous pulley through the cover paper feeding synchronous belt. The cover paper feeding synchronous pulley is connected to the output end of the cover paper feeding drive motor. The cover alignment component is arranged on the right substrate and is located at the rear end of the cover tray. The cover paper feeding baffle is arranged on the right substrate and is located on one side of the cover tray.

[0011] As a further improvement of the present invention, the cover input structure further includes a height sensor. The height sensor is arranged on the suction box component. When the height sensor senses the cover tray, the suction box component is activated.

[0012] As a further improvement of the present invention, the cover output structure includes a cover paper pressing member, a cover paper output roller group, a cover paper output driving wheel group and a cover paper output guide board. The cover paper pressing member is arranged at the output end of the cover input structure. The cover paper output guide board is arranged between the left substrate and the right substrate. The output end of the cover paper output guide board is arranged close to the output end of the inner page output structure. The cover paper output roller group is arranged below the cover paper output guide board. The cover paper output roller group is driven by the cover paper output driving wheel group arranged on the left substrate. The cover paper output guide board cover is arranged on the top of the cover paper output guide board.

[0013] As a further improvement of the present invention, the cover output structure further includes an ultrasonic sensor. The ultrasonic sensor is connected to the frame and is located between the output end of the cover input structure and the input end of the cover output structure. When the number of covers output by the cover input structure is greater than one, the ultrasonic sensor reports an error.

[0014] The beneficial effects of the present invention are as follows: The device can stack and align the inner pages and covers, and at the same time can detect whether there is a problem of double covers, improving the working efficiency of workers, reducing working hours and having a low error rate. Description of the Drawings

[0015] Figure 1 is the overall view of the present invention; Figure 2 It is a schematic diagram of the inner page input structure of the present invention; Figure 3 It is a schematic diagram of the cover input structure of the present invention; Figure 4 It is a schematic diagram of the inner side of the right substrate of the present invention; Figure 5 It is a schematic diagram of the inner page output structure of the present invention; Figure 6 It is a schematic diagram of the cover output structure of the present invention; Figure 7 It is a schematic diagram of the air suction box assembly of the present invention; Figure 8 It is a schematic diagram of the cover alignment assembly of the present invention.

[0016] Reference numerals: 1 - frame, 2 - inner page, 3 - cover, 4 - inner page input structure, 5 - inner page output structure, 6 - cover input structure, 7 - cover output structure, 11 - left substrate, 12 - right substrate, 402 - paper feed synchronous belt, 403 - paper feed driving pulley set, 404 - paper feed guide board, 405 - paper feed belt, 406 - paper feed idler pulley set, 407 - first support plate, 408 - second support plate, 409 - third support plate, 410 - paper feed driving motor, 411 - paper feed synchronous pulley, 412 - paper feed fixed baffle, 413 - paper feed movable baffle, 414 - linear guide rail, 415 - paper feed inductor, 501 - inner page paper pressing part, 502 - inner page paper output belt, 503 - inner page paper output guide board, 504 - inner page paper output driving motor, 505 - inner page paper output synchronous belt, 506 - inner page paper output driving pulley assembly, 601 - cover tray, 602 - cover alignment assembly, 603 - air suction box assembly, 604 - cover paper feed driving motor, 605 - cover paper feed synchronous belt, 606 - height inductor, 607 - cover paper feed baffle, 608 - cover paper feed synchronous pulley, 609 - tray lifting motor, 610 - tray synchronous belt, 611 - tray synchronous pulley, 612 - slider, 701 - cover paper pressing part, 702 - cover paper output driving pulley set, 703 - cover paper output guide board, 704 - cover paper output guide paper cover plate, 60201 - cover alignment driving motor, 60202 - alignment assembly bracket, 60203 - alignment synchronous belt, 60204 - alignment synchronous pulley, 60205 - paper slapping assembly, 60206 - pressure sensing piece, 60207 - cover baffle board, 60208 - guide rail assembly, 60301 - air suction fan, 60302 - blowing fan, 60303 - air suction box paper feed belt, 60304 - air suction box belt pulley, 60305 - air suction box, 60306 - blowing box. Detailed implementation manners

[0017] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0018] The present invention provides a cover paper feeding and pairing device, which includes a frame 1, an inner page input structure 4, an inner page output structure 5, a cover input structure 6 and a cover output structure 7. The inner page input structure 4, the inner page output structure 5, the cover input structure 6 and the cover output structure 7 are all connected to the middle of the frame 1. The cover input structure 6 is located above the inner page input structure 4. The output end of the cover output structure 7 is located above the output end of the inner page output structure 5. The inner pages 2 are put into the input end of the inner page input structure 4 and sent out from the output end of the inner page output structure 5. The cover 3 is placed at the inner page input structure 4, and one cover 3 is sent out from the output end of the inner page output structure 5 and placed above the inner pages 2. The output end of the cover output structure 7 is provided with a cover paper output guiding paper cover plate 704 for preventing the cover 3 from flying.

[0019] As an embodiment of the present invention, the frame 1 includes a left substrate 11 and a right substrate 12, and the left substrate 11 and the right substrate 12 are arranged in parallel. The inner page input structure 4, the inner page output structure 5, the cover input structure 6 and the cover output structure 7 are arranged between the left substrate 11 and the right substrate 12.

[0020] As another embodiment of the present invention, the inner page input structure 4 includes a first support plate 407, a second support plate 408, a paper feeding drive motor 410, a paper feeding synchronous pulley 411, a paper feeding synchronous belt 402, a paper feeding driving pulley group 403, a paper feeding guide plate 404, a paper feeding belt 405 and a paper feeding idle pulley group 406. The first support plate 407 is connected to the right substrate 12, the second support plate 408 is connected to the left substrate 11, the paper feeding driving pulley group 403 is arranged at one end of the first support plate 407, the paper feeding idle pulley group 406 is arranged at the other end of the first support plate 407, the paper feeding belt 405 is sleeved on the paper feeding driving pulley group 403 and the paper feeding idle pulley group 406, the paper feeding guide plate 404 is arranged at the top of the paper feeding belt 405, the paper feeding drive motor 410 is arranged on the left substrate 11, the paper feeding synchronous pulley 411 is arranged on the left substrate 11 and connected to the output end of the paper feeding drive motor 410, and the paper feeding synchronous pulley 411 and the paper feeding driving pulley group 403 are connected by the paper feeding synchronous belt 402.

[0021] The first support plate 407 and the second support plate 408 provide installation support for the entire structure. The paper feeding drive motor 410, the paper feeding synchronous pulley 411, the paper feeding driving wheel set 403 and the paper feeding idle wheel set 406 together form the driving structure of the paper feeding belt 405. By the rotation of the paper feeding driving wheel set 403 and the paper feeding idle wheel set 406, the paper feeding guide plate 404 is driven to move on the paper feeding belt 405, so as to convey the inner pages 2 into the interior of the device.

[0022] As another embodiment of the present invention, the inner page input structure 4 further includes a third support plate 409, a paper feeding fixed baffle 412, a paper feeding movable baffle 413 and a linear guide rail 414. The two ends of the third support plate 409 are respectively connected to the first support plate 407 and the second support plate 408. The third support plate 409 is located in the middle of the paper feeding belt 405. The paper feeding fixed baffle 412 is vertically connected to one end of the third support plate 409. The paper feeding movable baffle 413 is arranged on the linear guide rail 414, and the linear guide rail 414 is arranged on the third support plate 409. The paper feeding movable baffle 413 is arranged in parallel with the paper feeding fixed baffle 412.

[0023] As another embodiment of the present invention, it further includes a paper feeding inductor 415. The paper feeding inductor 415 is arranged on the frame 1, and the paper feeding inductor 415 is located directly above the output end of the inner page input structure 4.

[0024] The paper feeding movable baffle 413 can move on the linear guide rail 414 to adjust the distance between the paper feeding movable baffle 413 and the paper feeding fixed baffle 412, so as to cooperate with inner pages 2 of different sizes. When the paper feeding inductor 415 senses the inner page 2, it proves that the inner page 2 has moved to the output end of the inner page input structure 4, and then the inner page output structure 5 will be started.

[0025] As another embodiment of the present invention, the inner page output structure 5 includes an inner page pressing member 501, an inner page paper output belt 502, an inner page paper output guide plate 503, an inner page paper output drive motor 504, an inner page paper output synchronous belt 505 and an inner page paper output driving wheel assembly 506. The inner page pressing member 501 is connected between the left base plate 11 and the right base plate 12. The inner page paper output drive motor 504 is arranged on the left base plate 11. The inner page paper output driving wheel assembly 506 is arranged between the left base plate 11 and the right base plate 12 and is connected to the output end of the inner page paper output drive motor 504 through the inner page paper output synchronous belt 505. The inner page paper output belt 502 is sleeved on the inner page paper output driving wheel assembly 506 and the paper feeding driving wheel set 403. The inner page paper output guide plate 503 is arranged on the inner page paper output belt 502.

[0026] The inner-page paper output driving motor 504 drives the inner-page paper output driving wheel assembly 506 to rotate through the inner-page paper output synchronous belt 505. Cooperating with the paper feeding driving wheel group 403, the inner-page paper output belt 502 moves, and the inner page 2 enters the inner-page paper output guide board 503 from the paper feeding guide board 404 and is transported to a designated position to wait for pairing and combination with the cover 3.

[0027] As another embodiment of the present invention, the cover input structure 6 includes a cover tray 601, a cover alignment assembly 602, a suction box assembly 603, a cover paper feeding driving motor 604410, a cover paper feeding synchronous belt 605402, a cover paper feeding baffle 607, a cover paper feeding synchronous pulley 608411, a tray lifting motor 609, a tray synchronous belt 610, a tray synchronous pulley 611 and a slider 612. The cover paper feeding driving motor 604410 and the tray lifting motor 609 are arranged on the right substrate 12. A vertical tray guide rail is provided on the right substrate 12. The slider 612 is slidably connected to the tray guide rail. The cover tray 601 is connected to the slider 612. The tray lifting motor 609 is connected to the tray synchronous pulley 611 arranged at the upper end of the tray guide rail through the tray synchronous belt 610. The suction box assembly 603 is arranged between the left substrate 11 and the right substrate 12. The suction box assembly 603 is located at the front end of the cover tray 601. The suction box assembly 603 is connected to the cover paper feeding synchronous pulley 608411 through the cover paper feeding synchronous belt 605402. The cover paper feeding synchronous pulley 608411 is connected to the output end of the cover paper feeding driving motor 604410. The cover alignment assembly 602 is arranged on the right substrate 12 and is located at the rear end of the cover tray 601. The cover paper feeding baffle 607 is arranged on the right substrate 12 and is located on one side of the cover tray 601.

[0028] As another embodiment of the present invention, the cover input structure 6 further includes a height sensor 606. The height sensor 606 is arranged on the suction box assembly 603. When the height sensor 606 senses the cover tray 601, the suction box assembly 603 is started.

[0029] The cover alignment component 602 is composed of a cover alignment drive motor 60201, an alignment component bracket 60202, an alignment synchronous belt 60203, an alignment synchronous pulley 60204, a sheet patting component 60205, a pressure sensing sheet 60206, a cover baffle 60207, and a guide rail component 60208. The air suction box component 603 is composed of an air suction fan 60301, a blowing fan 60302, an air suction box paper feeding belt 60303, an air suction box pulley 60304, an air suction box 60305, and a blowing box 60306. The tray lifting motor 609 drives the tray synchronous pulley 611 to rotate, so that the cover tray 601 moves up and down along the tray guide rail, and the cover 3 is placed on the cover tray 601. The alignment component bracket 60202 is fixed on the frame 1, the alignment synchronous pulley 60204 is fixed on the alignment component bracket 60202, the alignment synchronous belt 60203 is sleeved between the cover alignment drive motor 60201 and the alignment synchronous pulley 60204, the sheet patting component 60205 is fixed on the guide rail component 60208 and can slide on the guide rail under the control of the alignment synchronous belt 60203, the pressure sensing sheet 60206 is fixed on the sheet patting component 60205, the cover baffle 60207 is fixed on the frame 1, the guide rail component 60208 is fixed on the alignment component bracket 60202, and can identify the size of the cover 3. The air suction box component 603 is fixed on the frame 1 through bearings, and the air suction box component 603 can separate the cover 3 by blowing and feed the paper by air suction. The cover paper feeding drive motor 604410 is fixed on the frame 1. The cover paper feeding synchronous belt 605402 is fixed between the cover paper feeding drive motor 604410 and the air suction box component 603 through the cover paper feeding synchronous pulley 608411. When the cover 3 rises to the height set by the height sensor 606, the blowing fan 60302 blows out air flow to separate the topmost cover 3 sheet, and at the same time, the air suction fan 60301 works to form a negative pressure in the air suction box 60305 to suck the topmost sheet of the cover 3, and then the air suction box paper feeding belt 60303 driven by the air suction box pulley 60304 driven by the cover paper feeding drive motor 604410 conveys the cover 3 to the cover output structure 7.

[0030] As another embodiment of the present invention, the cover output structure 7 includes a cover paper pressing member 701, a cover paper output roller group, a cover paper output driving wheel group 702, and a cover paper output guide plate 703. The cover paper pressing member 701 is disposed at the output end of the cover input structure 6. The cover paper output guide plate 703 is disposed between the left substrate 11 and the right substrate 12. The output end of the cover paper output guide plate 703 is disposed close to the output end of the inner page output structure 5. The cover paper output roller group is disposed below the cover paper output guide plate 703. The cover paper output roller group is driven by the cover paper output driving wheel group 702 disposed on the left substrate 11. A cover paper output guide cover plate 704 is disposed on the top of the cover paper output guide plate 703.

[0031] As another embodiment of the present invention, the cover output structure 7 further includes an ultrasonic sensor. The ultrasonic sensor is connected to the frame 1 and is located between the output end of the cover input structure 6 and the input end of the cover output structure 7. When the number of covers 3 output by the cover input structure 6 is greater than one, the ultrasonic sensor reports an error.

[0032] The present invention provides a cover paper feeding and pairing device, which can store more than 1000 sheets of paper with a weight of more than 157 g, sucks the paper by a negative pressure method, will not damage the surface of the paper, and has strong adaptability to the paper. The cover 3 uses paper type size recognition, can automatically obtain the size of the cover 3, and thus automatically adjusts the matching size of the stapling and folding machine. The inner pages 2 do not need to pause and wait and enter the subsequent binding equipment together.

[0033] The working process of this device is as follows: For different paper sizes, first adjust the size of the paper inlet of the machine, that is, adjust the distance between the paper feeding movable baffle 413 and the paper feeding fixed baffle 412. The cover 3 is manually placed on the cover tray 601 in advance and abuts against the cover paper feeding baffle 607 to be ready for paper feeding at any time. The inner pages 2 are sent into the inner page input structure 4 manually or by machine docking. After the machine is started, the driving plate controls the paper feeding driving motor 410 to rotate constantly. At this time, the inner pages 2 will be driven by the paper feeding belt 405 driven by the paper feeding driving motor 410 and move on the paper feeding guide plate 404 towards the inner page output structure 5. When the inner pages 2 move to directly below the paper feeding sensor 415 through the paper feeding belt 405, they are sensed. At this time, the driving plate controls the inner page output structure 5 to start working. The inner page paper output driving motor 504 drives the inner page paper output driving wheel assembly 506 to rotate, driving the inner page paper output belt 502 to move towards the paper outlet direction.

[0034] At the same time, the cover input structure 6 starts to work. The drive board controls the cover alignment drive motor 60201 to work. The paper patting assembly 60205 drives the alignment synchronous pulley 60204 through the cover alignment drive motor 60201, drives the alignment synchronous belt 60203, and makes the paper patting assembly 60205 move. When the paper patting assembly 60205 leans against the cover, it will be sensed by the pressure sensing sheet 60206, and thus the size of 3 sheets of the cover is obtained, preparing for the next step. When the inner page 2 is sensed by the paper feeding inductor 415 installation assembly, the drive board controls the cover paper feeding drive motor 604410 to start running, and drives the air suction box assembly 603 through the cover paper feeding synchronous belt 605402. The cover tray 601 moves on the tray guide rail through the tray lifting motor 609. When it rises to the height set by the height inductor 606, the blowing fan 60302 blows out air flow, and the air flow can separate the topmost paper of the cover 3 through the blowing box. At the same time, the air suction fan 60301 works, forming a negative pressure in the air suction box 60305, sucking the topmost sheet of the cover 3, and then driving the air suction box paper feeding belt 60303 through the air suction box pulley 60304 driven by the cover paper feeding drive motor 604410 to convey the cover 3 to the cover output structure 7. When the cover 3 enters directly below the ultrasonic inductor, if the number of the cover 3 exceeds one and is sensed by the ultrasonic inductor assembly, the machine will report an error. When the number of the cover 3 is one, the machine continues to operate. When the cover 3 enters the cover output structure 7, the cover 3 will be driven by the cover paper output driving wheel set 702 driven by the paper output drive motor, and move towards the paper outlet direction through the cover paper output guide board 703. The cover paper pressing part 701 plays a role in pressing the cover 3, making the cover 3 closely adhere to the cover paper output roller set and smoothly move towards the paper outlet. The cover paper output guide board cover 704 prevents the cover 3 from flying. Finally, the cover 3 will fall on the inner page 2 moving towards the paper outlet direction, and then enter the binding and folding machine guide board together to start the next process work.

[0035] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. A cover paper feeding pairing device, characterized in that: It includes a frame, an inner page input structure, an inner page output structure, a cover input structure and a cover output structure, wherein the inner page input structure, the inner page output structure, the cover input structure and the cover output structure are all connected in the middle of the frame, the cover input structure is located above the inner page input structure, and the output end of the cover output structure is located above the output end of the inner page output structure, the inner pages are put in from the input end of the inner page input structure and sent out from the output end of the inner page output structure, the cover is placed at the inner page input structure, a cover is sent out from the output end of the inner page output structure and placed above the inner pages, and the output end of the cover output structure is provided with a cover paper output guide cover for preventing the cover from flying.

2. A cover paper feeding pairing device according to claim 1, characterized in that: The frame includes a left base plate and a right base plate, the left base plate is arranged in parallel with the right base plate, and the inner page input structure, the inner page output structure, the cover input structure and the cover output structure are arranged between the left base plate and the right base plate.

3. A cover paper feeding pairing device according to claim 2, characterized in that: The inner page input structure includes a first support plate, a second support plate, a paper feed drive motor, a paper feed synchronous wheel, a paper feed synchronous belt, a paper feed active wheel group, a paper feed paperboard guide, a paper feed belt and a paper feed idler wheel group, the first support plate is connected to the right base plate, the second support plate is connected to the left base plate, the paper feed active wheel group is arranged at one end of the first support plate, the paper feed idler wheel group is arranged at the other end of the first support plate, the paper feed belt is sleeved on the paper feed active wheel group and the paper feed idler wheel group, the paper feed paperboard guide is arranged on the top of the paper feed belt, the paper feed drive motor is arranged on the left base plate, the paper feed synchronous wheel is arranged on the left base plate and is connected to the output end of the paper feed drive motor, and the paper feed synchronous wheel and the paper feed active wheel group are connected through the paper feed synchronous belt.

4. A cover paper feeding pairing device according to claim 3, characterized in that: The inner page input structure also includes a third support plate, a paper feed fixed baffle, a paper feed movable baffle and a linear guide rail. The two ends of the third support plate are respectively connected to the first support plate and the second support plate. The third support plate is located in the middle of the paper feed belt. The paper feed fixed baffle is vertically connected to one end of the third support plate. The paper feed movable baffle is arranged on the linear guide rail. The linear guide rail is arranged on the third support plate. The paper feed movable baffle is arranged parallel to the paper feed fixed baffle.

5. The cover paper feeding pairing device according to claim 1, characterized in that: It also includes a paper feed sensor, which is arranged on the frame and is located just above the output end of the inner page input structure.

6. A cover paper feeding pairing device according to claim 2, characterized in that: The inner page output structure includes an inner page paper pressing member, an inner page paper output belt, an inner page paper output guide paperboard, an inner page paper output driving motor, an inner page paper output synchronous belt and an inner page paper output driving wheel assembly, the inner page paper pressing member is connected between the left base plate and the right base plate, the inner page paper output driving motor is arranged on the left base plate, the inner page paper output driving wheel group is arranged between the left base plate and the right base plate, and is connected to the output end of the inner page paper output driving motor through the inner page paper output synchronous belt, the inner page paper output belt is sleeved on the inner page paper output driving wheel assembly and the paper feed driving wheel group, and the inner page paper output guide paperboard is arranged on the inner page paper output belt.

7. A cover paper feeding pairing device according to claim 2, characterized in that: The cover input structure includes a cover tray, a cover alignment component, an air suction box component, a cover paper feed drive motor, a cover paper feed synchronous belt, a cover paper feed baffle, a cover paper feed synchronous wheel, a tray lifting motor, a tray synchronous belt, a tray synchronous wheel and a slider. The cover paper feed drive motor and the tray lifting motor are arranged on the right substrate. A vertical tray guide rail is provided on the right substrate. The slider is slidably connected to the tray guide rail. The cover tray is connected to the slider. The tray lifting motor is connected to the tray synchronous wheel arranged at the upper end of the tray guide rail through a tray synchronous belt. The air suction box component is arranged between the left substrate and the right substrate. The air suction box component is located at the front end of the cover tray. The air suction box component is connected to the cover paper feed synchronous wheel through the cover paper feed synchronous belt. The cover paper feed synchronous wheel is connected to the output end of the cover paper feed drive motor. The cover alignment component is arranged on the right substrate and is located at the rear end of the cover tray. The cover paper feed baffle is arranged on the right substrate and is located on one side of the cover tray.

8. The cover paper feeding pairing device according to claim 7, characterized in that: The cover input structure also includes a height sensor, which is arranged on the air suction box assembly. When the height sensor senses the cover tray, the air suction box assembly is started.

9. The cover paper feeding pairing device according to claim 7, characterized in that: The cover output structure includes a cover paper pressing member, a cover paper output roller group, a cover paper output driving wheel group and a cover paper output guide paperboard. The cover paper pressing member is arranged at the output end of the cover input structure, the cover paper output guide paperboard is arranged between the left substrate and the right substrate, the output end of the cover paper output guide paperboard is arranged close to the output end of the inner page output structure, the cover paper output roller group is arranged below the cover paper output guide paperboard, the cover paper output roller group is driven by the cover paper output driving wheel group arranged on the left substrate, and the cover paper output guide cover plate is arranged on the top of the cover paper output guide paperboard.

10. The cover paper feeding pairing device according to claim 9, characterized in that: The cover output structure also includes an ultrasonic sensor, which is connected to the frame and located between the output end of the cover input structure and the input end of the cover output structure. When the number of covers output by the cover input structure is greater than one, the ultrasonic sensor reports an error.

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