A paper sheet paging device

Abstract

The application discloses a paper paging device, comprising: a paper suction mechanism for adsorbing the uppermost paper sheet at a paper suction end and keeping the adsorbed state during paging; and a paper turning mechanism for driving the paper suction mechanism to rotate, thereby driving the uppermost paper sheet to turn to a page turning state, the application is suitable for the paper paging technical field, the paper to be paged is placed on a paper loading platform, the paper is adsorbed by the paper suction mechanism, the page turning is performed by the paper turning mechanism, and the page turning is fixed by a back turning prevention mechanism, so that the paper is stably turned to a page, the accuracy and efficiency of the paper page turning are improved, and the requirement of large load and high efficiency can be met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of paper paging, and particularly relates to a paper paging device. BACKGROUND

[0002] Paper paging is commonly used in various fields of office places, such as printers, scanners and the like, and is aimed at scenarios with high paper processing load, such as the load of several to dozens of commercial printers, and the paper used is basically read and bound paper. After being printed, these papers have undergone binding, circulation, reading, recycling and even dismounting, and are different from new commodity paper. Such paper has lost the uniform and stable physical properties of new paper, and may have various problems such as stains, damage, curling and folding, but is generally still flat. After being recycled or stored, these papers need to be processed page by page using technical means. A device capable of automatically processing such paper puts forward very high requirements for the accuracy and efficiency of paper paging.

[0003] There are mainly two kinds of paper paging technologies available on the market, one is a paper rubbing technology using a rubber wheel, and the other is a page-by-page lifting technology using a suction cup. Both of these two technical solutions are difficult to meet the above technical requirements. The rubber wheel technology has low paging accuracy due to the unstable characteristics of the paper, is often stuck, and is not wear-resistant, and needs to be replaced frequently. The suction cup technology cannot quickly process paper due to its mechanical characteristics, has low efficiency, and is difficult to meet the requirements of high load and high efficiency. SUMMARY

[0004] The present application aims to overcome the defects of the prior art and provide a paper paging device.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A paper paging device comprises:

[0007] a paper suction mechanism for suctioning the uppermost paper sheet at a paper suction end and maintaining the suction state during paging; and

[0008] a paper turning mechanism for driving the paper suction mechanism to rotate and in turn drive the uppermost paper sheet to turn to a page turning state.

[0009] Preferably, the paper suction mechanism comprises a coaxial different-speed central suction pipe and an outer suction cylinder outside the central suction pipe, and an inner baffle is arranged in the central suction pipe;

[0010] A part of the outer surface of the central suction pipe is provided with a meshed air passage hole, which divides the central suction pipe into an air passage region and a non-air passage region. The air passage region cooperates with the inner baffle, and the suction area opening degree gradually increases with the rotation of the central suction pipe.

[0011] The outer suction cylinder is provided with a plane suction area parallel to the initial direction of the paper sheet.

[0012] Preferably, the central suction pipe and the outer suction cylinder are both rotationally arranged on the paper turning large arm.

[0013] The rotational angular velocity of the central suction pipe is opposite to the rotational angular velocity of the paper turning large arm and is a fixed integer, the outer circular velocity of the central suction pipe from the farthest point of the rotational axis of the paper turning large arm to the stationary frame is zero, and the rotational angular velocity of the outer suction cylinder is opposite to the rotational angular velocity of the paper turning large arm.

[0014] Preferably, the central suction pipe and the inner baffle of the suction pipe cooperate to form a gradually opening and curved suction area along the circular surface of the central suction pipe, which contacts the uppermost paper from the edge of the paper and rolls, absorbs and bends the uppermost paper.

[0015] After the edge of the paper is absorbed and bent by the central suction pipe, the central suction pipe ventilation area is gradually blocked by the inner baffle of the suction pipe, until the suction force of the central suction pipe disappears, and the edge of the paper leaves the central suction pipe along the tangential direction.

[0016] After the edge of the paper leaves the central suction pipe by a proper distance, the suction force between the central suction pipe and the outer suction cylinder is switched, the outer suction cylinder absorbs the edge of the paper, and the paper is continuously turned away along with the running of the outer suction cylinder.

[0017] Preferably, the paper loading platform is used to load the paper book and move the paper book upward by a certain displacement after the turning of the uppermost paper is completed, so as to facilitate the suction of the uppermost paper by the paper suction mechanism.

[0018] Preferably, the anti-back-turning mechanism further comprises at least two groups of pressing rod assemblies, which rotate in the same direction, on the same axis and on the same circumference, and press the turned paper and the newly turned paper at the same time.

[0019] As described above, by adopting the technical scheme, the paper page turning device has the following advantages:

[0020] In the paper page turning device, the paper to be turned is placed on the paper loading platform, the paper is absorbed by the paper suction mechanism, the paper is turned by the paper turning mechanism, and the paper is fixed by the anti-back-turning mechanism, so that the paper is stably turned, the accuracy and stability of the paper turning are improved, and the requirements of large load and high efficiency can be met. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the overall structure of the paper page turning device;

[0022] Figure 2 is a schematic view of the structure of the paper loading platform in the paper page turning device;

[0023] Figure 3It is a paper page device in the invention paper suction mechanism structure schematic view;

[0024] Figure 4 It is a paper page device in the invention paper turning mechanism structure schematic view;

[0025] Figure 5 It is a paper page device in the invention paper suction mechanism sectional view;

[0026] Figure 6 It is a paper page device in the invention anti-back-turning mechanism structure schematic view;

[0027] Figure 7 It is a paper page device in the invention anti-back-turning mechanism sectional view;

[0028] Figure 8 It is a paper page device in the invention processing assembly structure schematic view;

[0029] Figure 9 It is a paper page device in the invention rotating rod structure schematic view.

[0030] Reference signs:

[0031] 1, paper loading platform; 11, chassis; 12, lifting table support; 13, lifting table sliding block; 14, book clamp supporting plate; 15, lifting motor; 151, motor mounting plate; 152, No. 1 through slot; 153, screw rod; 154, connecting plate; 16, connecting sliding block; 17, pressure ring; 18, rotating rod; 19, lifting table top plate;

[0032] 2, paper turning mechanism side support;

[0033] 3, paper suction mechanism; 31, fan; 32, bearing seat; 33, paper turning large rotary arm; 331, No. 2 closed cavity; 332, through hole; 333, guide hole; 334, through hole; 34, outer suction cylinder; 35, central suction pipe; 350, three bearing seats; 351, end bearing and end shaft assembly; 36, air valve; 361, suction and turning switching air valve I; 37, suction pipe inner baffle; 711, rear air duct cover; 712, front air duct cover; 713, front air duct cover bottom plate; 39, paper turning large rotary arm rotating shaft; 81, air bellow;

[0034] 4, paper turning mechanism; 41, main motor; 42, synchronous wheel shaft;

[0035] 5, anti-back-turning mechanism; 51, fixed bottom plate; 52, fixed side plate; 53, bearing box; 54, No. 1 pressing piece; 55, No. 2 pressing piece; 56, No. 1 motor; 57, No. 2 motor; 58, No. 1 sleeve; 59, No. 2 sleeve; 501, rotating rod; 502, pressing rod; 503, sleeve;

[0036] 6, processing assembly; 61, assembly support; 63, sensor. DETAILED DESCRIPTION

[0037] The application is further described in the following detailed description of a paper sheet paging device with reference to the drawings, in which: Figures 1-9 The application is not limited to the embodiments described below.

[0038] Embodiments

[0039] A paper sheet paging device, as shown in the drawings, comprises: Figures 1-9 a paper suction mechanism 3 for suctioning the uppermost paper sheet at the paper suction end and maintaining the suctioning state during paging; and

[0040] a paper turning mechanism 4 for driving the paper suction mechanism 3 to rotate and further drive the uppermost paper sheet to turn to a page turning state.

[0041] In a possible embodiment, the paper suction mechanism 3 comprises a coaxial different-speed central suction pipe 35 and an outer suction cylinder 34 outside the central suction pipe 35, and the central suction pipe 35 is provided with an inner baffle 37;

[0042] The central suction pipe 35 is provided with a partial meshed vent hole outside the central suction pipe 35, which divides the central suction pipe 35 into a vent area and a non-vent area, and the vent area cooperates with the inner baffle, and the suction area opening degree gradually increases with the rotation of the central suction pipe 35.

[0043] The outer suction cylinder 34 is provided with a plane suction area parallel to the initial direction of the paper sheet.

[0044] In a possible embodiment, the central suction pipe 35 and the outer suction cylinder 34 are both rotationally arranged on a paper turning large rotary arm 33.

[0045] The central suction pipe 35 has a rotational angular velocity opposite to that of the paper turning large rotary arm 33 and is a fixed integer, the outer circumferential speed of the central suction pipe 35 from the farthest point of the rotary shaft of the paper turning large rotary arm 33 to the stationary frame is zero, the central suction pipe 35 is balanced, and the rotational angular velocity of the outer suction cylinder 34 is opposite to that of the paper turning large rotary arm 33.

[0046] In a possible embodiment, the central suction pipe 35 and the inner baffle 37 cooperate to form a gradually opening and arc surface curved suction area, which contacts the uppermost paper sheet from the edge of the paper sheet, rolls and bends the uppermost paper sheet.

[0047] After the edge of the paper sheet is suctioned and bent by the central suction pipe 35, the edge of the paper sheet moves in the circumferential direction, the vent area of the central suction pipe 35 is gradually blocked by the inner baffle 37, until the suction of the central suction pipe 35 disappears, and the edge of the paper sheet leaves the central suction pipe 35 in the tangential direction.

[0048] After the edge of the paper sheet is suctioned and bent by the central suction pipe 35, the edge of the paper sheet moves in the circumferential direction, the vent area of the central suction pipe 35 is gradually blocked by the inner baffle 37, until the suction of the central suction pipe 35 disappears, and the edge of the paper sheet leaves the central suction pipe 35 in the tangential direction.

[0049] After the paper edge leaves the center suction pipe 35 at a proper distance, the suction switching between the center suction pipe 35 and the suction area of the outer suction cylinder 34 is performed, the outer suction cylinder 34 adsorbs the paper edge, and the paper is continuously turned away with the running of the outer suction cylinder 34.

[0050] Further, the paper suction mechanism 3 comprises a paper turning mechanism side support 2 and a centrifugal fan 31 away from one side of the paper loading platform 1, the paper turning mechanism side support 2 is provided with a bearing seat 32 close to one side of the paper loading platform 1, the bearing seat 32 is connected and communicated with a paper turning large rotary arm 33 away from one end of the paper turning mechanism side support 2, the paper turning large rotary arm 33 is provided with an outer suction cylinder 34 on each side away from the paper turning mechanism side support 2, the inner side of the outer suction cylinder 34 is sequentially provided with a center suction pipe 35, and the center suction pipe 35 is internally provided with a suction pipe inner baffle 37.

[0051] Further, the paper turning large rotary arm rotating shaft 39 supported in the bearing seat 32 adopts a thin-walled hollow cylinder structure, is connected and communicated with the center of the paper turning large rotary arm 33, the paper turning large rotary arm 33 is internally provided with a center air valve 36, a suction turning switching air valve one 361 and a suction turning switching air valve two, the center air valve 36 is arranged at the communicated position of the paper turning large rotary arm 33 and the paper turning large rotary arm rotating shaft 39, and the suction turning switching air valve one 361 and the suction turning switching air valve two are respectively arranged at the communicated positions of the paper turning large rotary arm 33 and the suction pipe inner baffle 37.

[0052] Further, the center suction pipe 35 and the outer suction cylinder 34 are installed on a three-bearing seat 350 close to one side of the paper turning large rotary arm 33, the center suction pipe 35 and the outer suction cylinder 34 are installed on an end bearing and end shaft assembly 351 away from one side of the paper turning large rotary arm 33, the three-bearing seat 350 is fixedly connected with the paper turning large rotary arm through the through hole 332 and the guide hole 333 at the end of the paper turning large rotary arm 33, and the center suction pipe 35 and the outer suction cylinder 34 are concentric and can freely rotate.

[0053] Further, the suction pipe inner baffle 37 is concentric through the center suction pipe 35, is installed on the end bearing and end shaft assembly 351 away from one side of the paper turning large rotary arm 33, is passed through and fixed to a suction pipe inner baffle root fixed ring close to one side of the paper turning large rotary arm 33, the suction pipe inner baffle root fixed ring is fixed at the end of the paper turning large rotary arm 33, and the outer cylindrical surface of the suction pipe inner baffle 37 is concentric with the inner cylindrical surface of the center suction pipe 35.

[0054] Further, a rear air duct cover 711 is fixedly connected with the end of the paper turning large rotary arm 33, covers the through hole 332 and the guide hole 333 at the end of the paper turning large rotary arm 33, and forms a No. 1 closed cavity in air-tightness except the through hole 332 and the guide hole 333, the cavity is communicated with the suction pipe inner baffle root, and provides suction air for the center suction pipe 35;

[0055] Further, the front air duct cover 712 is fixedly connected to the front air duct cover bottom plate 713, and the front air duct cover bottom plate 713 is fixedly connected to the paper turning large rotary arm 33, and the through hole 334 on the front air duct cover bottom plate 713 is communicated with the paper turning large rotary arm 33.

[0056] Further, the front air duct cover 712, the front air duct cover bottom plate 713 and the three bearing seats 350 jointly form a second closed cavity 331, and the cavity is communicated with the outer suction cylinder root, and provides suction force for the outer suction cylinder 34.

[0057] Further, the wind box 81 is fixedly connected to the paper turning mechanism side support 2, the paper turning large rotary arm rotating shaft 39 is communicated with the wind box 81 in airtight manner through the through hole on the wind box 81, and the suction end of the centrifugal fan 31 is connected with the extension pipe of the wind box 81 through a pipeline.

[0058] Further, the negative pressure from the centrifugal fan 31 reaches the wind box 81 through a pipeline, and then reaches the middle part of the paper turning large rotary arm 33 through the paper turning large rotary arm rotating shaft 39, and the negative pressure is controlled by the central air valve 36 in the middle part of the paper turning large rotary arm 33, and is guided to the suction and turning conversion air valve one 361 or the suction and turning conversion air valve two.

[0059] In a possible implementation, taking the suction and turning conversion air valve one 361 as an example, the suction and turning conversion air valve two is the same, and the suction and turning conversion air valve two is symmetrical with the suction and turning conversion air valve one 361. The negative pressure suction is controlled by the suction and turning conversion air valve one 361, and can be guided to the guide hole 333 or the through hole 334. The negative pressure suction is guided to the central suction pipe 35 through the guide hole 333, and is guided to the outer suction cylinder 34 through the through hole 334.

[0060] As can be seen from the above, the working principle of the page turning mechanism is as follows:

[0061] The central suction pipe 35 cooperates with the suction pipe inner baffle 37, the rotation of the paper turning large rotary arm 33 and the central suction pipe 35 forms a gradually opened suction area which is curved along the circular surface of the central suction pipe 35, the paper is reliably rolled and bent in the rolling process on the surface of the central suction pipe 35, and is transmitted to the planar adsorption area of the outer suction cylinder 34, and the uppermost paper and the lowermost paper are reliably separated because the process is a gentle change process starting from the surface of the paper, the motion parameters of the paper in the process are small in dispersion, and the adsorption and separation are almost completely reliable. The edges of the paper are finally transmitted to the planar adsorption area of the outer suction cylinder 34, and stop moving along the planar adsorption area of the outer suction cylinder 34 after the suction force between the central suction pipe 35 and the outer suction cylinder 34 is switched, and are finally rolled away, turned open, straightened and separated from the outer suction cylinder 34, and the page turning process is completed. In this process, the uppermost paper presses the lowermost paper in an elastic bending manner, so that the lowermost paper remains in place and is ready for the next page turning cycle.

[0062] In a possible implementation, the paper loading platform 1 is further included to support the paper book, and to move the paper book upward by a certain displacement after the turning of the uppermost paper is completed, so as to facilitate the paper suction mechanism 3 to suck the uppermost paper.

[0063] Further, the paper loading platform 1 includes a base frame 11, and a lifting platform support 12 is arranged on the top of the base frame 11, and a lifting platform slider 13 is slidably arranged in the lifting platform support 12, and a lifting platform top plate 19 is arranged on the top of the lifting platform slider 13.

[0064] Further, the lifting platform slider 13 moves forward and backward to drive the lifting platform top plate 19 to move up and down.

[0065] Further, the lifting platform support 12, the lifting platform slider 13 and the lifting platform top plate 19 all adopt a U-shaped structure, the lifting platform slider 13 is slidably sleeved in the lifting platform support 12, and the lifting platform top plate 19 is reversely buckled in the lifting platform slider 13.

[0066] Further, the lifting platform top plate 19 is provided with a book clamp supporting plate 14, a first through slot 152 is formed on the top of the lifting platform slider 13, a motor mounting plate 151 is slidably inserted in the first through slot 152, the motor mounting plate 151 is fixedly connected with the lifting platform support 12, a lifting motor 15 is arranged on the motor mounting plate 151, a connecting plate 154 is arranged on the lifting platform slider 13, a screw rod 153 is connected with the output shaft of the lifting motor 15, and the screw rod 153 is threadedly connected with the connecting plate 154.

[0067] Further, vertical sliding grooves 162 are formed at both ends of the side plates of the lifting platform support 12, inclined sliding grooves 161 are correspondingly formed on the lifting platform slider 13, and connecting sliding blocks 16 are correspondingly arranged on the lifting platform top plate 19, and the connecting sliding blocks 16 pass through the corresponding inclined sliding grooves 161 and vertical sliding grooves 162.

[0068] Further, a pressing ring 17 is sleeved at the rear end of the book clamp supporting plate 14, the upper end of the pressing ring 17 is in contact with the end of the paper, and a rotating rod 18 is threadedly connected with the lower end of the pressing ring 17, so that the end of the paper is fixed on the book clamp supporting plate 14 through the rotating rod 18 and the pressing ring 17.

[0069] Further, the side support 2 of the paper turning mechanism is connected with the side surface of the base frame 11.

[0070] In summary, the working principle of the paper loading platform 1 is as follows:

[0071] Firstly, the paper is arranged on the book clamp supporting plate 14 and is limited by the clamping mechanism on the top thereof, so that the paper can only move forward and backward or upward.

[0072] Meanwhile, the lifting motor 15 rotates to drive the screw rod 153 to rotate, and then drive the lifting platform slider 13 to move forward and backward. At this time, the connecting slider 16 slides in the inclined sliding groove 161, and the height in the vertical direction changes accordingly, which is reflected in the change of the position height of the connecting slider 16 in the vertical sliding groove 162. The change of the height of the connecting slider 16 drives the lifting platform top plate 19 to slide up and down, so that the paper on the book holder plate 14 can be adjusted in height.

[0073] The advantage of this is that when one paper on the book holder plate 14 is turned over, the paper below can be lifted a little bit, so that the air tightness problem of the paper suction mechanism 3 does not occur, which causes the efficiency to be reduced.

[0074] Furthermore, the upper end of the compression ring 17 can fix the rear ends of multiple papers on the book holder plate 14, so that the papers will not be disordered during the page turning process.

[0075] In one possible implementation, it further includes a back-turning prevention mechanism 5, which at least includes two groups of compression rod assemblies, which rotate in the same direction, coaxially and in the same circle, and press the turned page paper, while turning in and pressing the new turned page paper.

[0076] Further, the back-turning prevention mechanism 5 is arranged at the rear end of the paper loading platform 1, and is used to press the turned page paper to prevent the paper from turning back.

[0077] Further, the back-turning prevention mechanism 5 includes a fixed bottom plate 51, which is fixed to the book holder plate 14. The fixed bottom plate 51 is provided with a fixed side plate 52 at the left upper end. The fixed side plate 52 is provided with a first compression piece 54 and a second compression piece 55 on the right side. The first compression piece 54 is arranged inside the second compression piece 55.

[0078] Further, the fixed side plate 52 is provided with a first motor 56 and a second motor 57 on the left side. The first compression piece 54 is in transmission connection with the first motor 56, and the second compression piece 55 is in transmission connection with the second motor 57.

[0079] Further, the fixed side plate 52 is provided with a bearing box 53 on the left side. The first motor 56 and the second motor 57 are arranged at the bottom of the bearing box 53.

[0080] Further, the second compression piece 55 is in rotational connection with the fixed side plate 52 through a second sleeve 59. A first sleeve 58 is rotatably inserted into the second sleeve 59. The first sleeve 58 is connected with the first compression piece 54.

[0081] Further, the first sleeve 58 is in transmission connection with the first motor 56, and the second sleeve 59 is in transmission connection with the second motor 57.

[0082] Further, the second sleeve 59 is inserted into the bearing box 53, and the first sleeve 58 passes through the second sleeve 59.

[0083] Further, the first pressing piece 54 and the second pressing piece 55 each comprise a rotating rod 501, the rotating rod 501 is provided with a sleeve 503 at the center of the left side, and the rotating rod 501 is provided with a pressing rod 502 at both ends of the right side.

[0084] In summary, the working principle of the anti-turning mechanism 5 is as follows:

[0085] The two groups of pressing rods are driven alternately to move in the same coaxial and circumferential direction, and there is always a pressing rod at the position where the paper needs to be pressed. While the new paper is turned in, the subsequent pressing rod moves synchronously with the current pressing rod, so that the new paper is continuously turned in and the anti-turning effect is realized. In this process, the turning mechanism sends a motion signal to the anti-turning mechanism at the appropriate phase, and combines with the current position signal of the anti-turning mechanism. Under the control of the appropriate driving circuit, the two motors of the anti-turning mechanism are driven alternately to rotate, and then the two groups of pressing rods rotate with the required motion characteristics.

[0086] In a possible implementation, the processing assembly 6 is further included, and the processing assembly 6 comprises an assembly support 61, and the assembly support 61 is provided with a camera and / or a sensor 63.

[0087] Further, the assembly support 61 adopts an L-shaped structure.

[0088] Further, the assembly support 61 is provided with two assembly supports 61, the two assembly supports 61 are symmetrically arranged, and are arranged on the front and rear sides of the paper paging device respectively. The fixed ends of the two assembly supports 61 are fixedly connected with the turning mechanism side support 2, and the free ends of the two assembly supports 61 are provided with the camera and the sensor 63.

[0089] Further, the assembly support 61 is arranged above the paper paging device, the fixed end of the assembly support 61 is fixedly connected with the turning mechanism side support 2, and the free end of the assembly support 61 is provided with the camera.

[0090] Further, the assembly support 61 is arranged on the left side of the paper paging device, the fixed end of the assembly support 61 is fixedly connected with the bottom frame 11, and the free end of the assembly support 61 is provided with the sensor 63.

[0091] The above is a further detailed description of the present application in combination with a specific preferred embodiment, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, a number of simple deductions or replacements can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.

Claims

1. A paper separating device, characterized in that, include: The paper suction mechanism (3) is used to suction the top layer of paper at the suction end and maintain the suction state during the pagination process; as well as The paper-flipping mechanism (4) is used to drive the paper-suction mechanism (3) to rotate, thereby causing the top layer of paper to flip to the flipped state; The paper suction mechanism (3) includes a coaxial central suction tube (35) with different speeds and an outer suction cylinder (34) on its outer side. The central suction tube (35) is provided with an inner baffle (37). The central suction tube (35) has a partial mesh ventilation hole on its outer side, which divides the central suction tube (35) into a ventilation area and a non-ventilation area. The ventilation area cooperates with the internal baffle, and the opening of the suction area gradually increases as it rotates. The outer suction cylinder (34) is provided with a planar suction area parallel to the initial direction of the paper direction; The central suction tube (35) and the outer suction tube (34) are both rotatably mounted on the large paper-turning rotary arm (33); The rotational angular velocity of the central suction tube (35) is opposite in direction to the rotational angular velocity of the large paper-turning arm (33) and is a fixed integer. The outer circular linear velocity of the point furthest from the rotation axis of the large paper-turning arm (33) of the central suction tube (35) is zero relative to the stationary frame. The rotational angular velocity of the outer suction tube (34) is opposite to the rotational angular velocity of the large paper-turning arm (33).

2. The paper separating device as described in claim 1, characterized in that: The central straw (35) and the inner baffle (37) of the straw cooperate to form a suction area that gradually opens and bends with the arc surface of the central straw (35), starting from the edge of the paper to contact the top layer of paper, rolling to absorb and bend the top layer of paper. The paper edge is attracted and bent by the central straw (35) and moves along the circumference. The ventilation area of ​​the central straw (35) is gradually blocked by the inner baffle (37) until the suction of the central straw (35) disappears and the paper edge leaves the central straw (35) tangentially along the circumference. After the edge of the paper leaves the central suction tube (35) at an appropriate distance, the suction force is switched between the central suction tube (35) and the suction area of ​​the outer suction tube (34). The outer suction tube (34) adsorbs the edge of the paper, and as the outer suction tube (34) moves, the paper is turned away again.

3. The paper separating device as described in claim 1, characterized in that: It also includes a paper-carrying platform (1) for carrying the paper book and moving the paper book up a certain distance after the top layer of paper is turned over, so that the paper suction mechanism (3) can absorb the top layer of paper.

4. A paper separating device as described in claim 1, characterized in that: It also includes an anti-flipping mechanism (5), which includes at least two sets of pressure bar assemblies. The two sets of pressure bar assemblies rotate in the same direction, on the same axis, and in the same circumference, pressing down the already flipped paper and simultaneously flipping in and pressing down the newly flipped paper.

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