Automatic page-turning structure and inkjet printer with such structure

Abstract

This invention relates to an automatic page-turning structure and a coding device having the same structure. The automatic page-turning structure includes a worktable, a page-turning mechanism, and a clamping mechanism disposed on the worktable for pressing a first side of the paper. The page-turning mechanism includes a paper-lifting mechanism and a paper-flipping mechanism. The paper-lifting mechanism is used to lift the second side corner of the paper. The paper-flipping mechanism includes a hollow roller with open ends and a first drive mechanism. The roller extends along the second side of the paper. The first end of the roller is located adjacent to the paper-lifting mechanism and has a first notch for the lifted corner of the paper to enter. A slit is formed on the wall of the roller from the first notch at the first end to the second end for the second side of the paper to enter. The roller can rotate around its axis under the drive of the first drive mechanism. The advantages are: this page-turning mechanism reduces manual labor intensity while also being adaptable to different types of paper for automatic page turning, simplifying the page-turning process, and providing more accurate page turning.

Description

Technical Field

[0001] This invention relates to the field of inkjet printing device technology, and more particularly to an automatic page-turning structure and an inkjet printing device having the same structure. Background Technology

[0002] Current technology requires flipping through paper documents during the project handover process to check or scan each page. However, the most common method for flipping pages is manual, which is time-consuming, labor-intensive, and inefficient due to the large number of paper documents involved in the handover process.

[0003] Therefore, there are many automatic page-turning devices in the prior art. For example, Chinese utility model patent CN202221709498.5 (authorization announcement number CN 217993931U) discloses an automatic page-turning device. This automatic page-turning device includes a base plate, a page-suction assembly, a page-suction swing arm assembly, two page-turning rods, and a drive assembly. The base plate is used to place paper documents; the page-suction assembly is used to suck up the paper documents; the page-suction swing arm is set on the base plate and connected to the page-suction assembly; the two page-turning rods are set on the base plate and respectively on opposite sides of the same surface of the base plate; the drive assembly is set on the base plate and connected to the page-suction swing arm assembly and the two page-turning rods; the drive assembly is used to drive the page-suction swing arm assembly to move so as to move the page-suction assembly that sucks up the paper away from the base plate, and to drive the two page-turning rods to rotate in opposite directions on both sides of the sucked-up paper to turn the sucked-up paper into a page. Although the device can automatically turn pages and solve the problem of manual page turning, it uses a vacuum suction cup to draw in paper. As the vacuum suction cup lifts the paper, the vacuum pump gradually releases the air in the suction chamber, allowing the page turning rod to turn pages smoothly. However, the vacuum suction cup can easily pick up multiple sheets of paper at once, which means that the page turning process is not one page at a time.

[0004] To address the aforementioned technical problems, and considering that some paper documents in the prior art still require coding (or "marking"), and to achieve automatic page turning and coding of paper documents, Chinese utility model patent CN201822198398.0 (authorization announcement number CN209521419U) discloses a page turning and marking device for document organization. This device includes an insulated operating table, an electrostatic generator located in the middle of the insulated operating table, an adsorption device and a shooting device located on the left and right sides of the electrostatic generator, and a marking device and a page turning device located on the upper and lower sides of the insulated operating table. This device utilizes the principle that like-polarity electrostatics repel each other and unlike-polarity electrostatics attract each other, using electrostatics to separate the pages and perform page turning and printing. Although the aforementioned page-turning and coding device can achieve automatic page turning and coding, it has the following limitations: the device requires the adhesive part in the middle of the page to be placed on the conductive strip, therefore it is only suitable for turning pages of bound books, and cannot automatically turn pages of unbound books. Therefore, further improvements to the existing technology are needed. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide an automatic page-turning structure that can also reduce manual labor intensity and is suitable for turning pages of different types of paper, in contrast to the above-mentioned prior art.

[0006] The second technical problem to be solved by the present invention is to provide a coding device that applies the above-mentioned automatic page-turning structure, in view of the prior art.

[0007] The technical solution adopted by this invention to solve the first technical problem mentioned above is: an automatic page-turning structure, comprising:

[0008] The workbench has a space for placing paper documents stacked on top of each other;

[0009] A page-turning mechanism, set on the worktable, is used to turn the pages of the papers placed in the placement position;

[0010] Its features also include:

[0011] A pressing mechanism, set on the worktable, is used to press the first side of the paper placed in the placement position;

[0012] The page-turning mechanism further includes:

[0013] A paper flipping mechanism is set on the worktable to flip up one corner of the second side of a piece of paper placed in the placement position, wherein the second side of the paper is positioned opposite to the first side of the paper.

[0014] A paper flipping mechanism is installed on a worktable. The paper flipping mechanism includes a hollow roller with open ends and a first drive mechanism connected to the roller drive. The roller extends along the second side of the paper. The first end of the roller is located adjacent to the paper flipping mechanism and has a first notch for the corner of the paper to enter. The wall of the roller has a cut from the first notch at the first end to the second end for the second side of the paper to enter. The roller can rotate around its axis under the drive of the first drive mechanism, so that the second side of the paper can enter the roller sequentially through the first notch and the cut when the roller rotates and flip towards the first side of the paper, and finally exit from the second end of the roller.

[0015] To facilitate paper flipping, a second notch is provided on the edge of the placement position on the worktable. This second notch is positioned below the corner of the paper to be flipped, and a lifting mechanism is provided at the second notch to lift the paper upwards. Using this lifting mechanism to lift the paper facilitates subsequent paper flipping and improves the efficiency of paper flipping.

[0016] Preferably, the paper flipping mechanism includes:

[0017] The flipping component includes a page divider and a friction head arranged vertically adjacent to each other, wherein the friction head is located above the corner of the paper to be flipped;

[0018] Second drive unit;

[0019] The second transmission mechanism is connected between the second driving member and the flipping member. The second driving member drives the flipping member to rotate through the second transmission mechanism, thereby causing the friction head to fold up the corner of the paper to be flipped up, and then the folded paper is separated into pages by the page separating rod.

[0020] Preferably, the second transmission mechanism includes a synchronous belt pulley mechanism, a reciprocating rocking impact mechanism, and a rotary mechanism. The synchronous belt pulley mechanism includes a first driving pulley mounted on the power output shaft of the second driving member, a first driven pulley mounted on the first rotating shaft, and a first synchronous belt wound around the outer periphery of the first driving pulley and the first driven pulley. The reciprocating rocking impact mechanism includes a first rocking impact wheel mounted on the first rotating shaft and a second rocking impact wheel coaxially mounted with the friction head. A first connecting rod is eccentrically hinged between the first and second rocking impact wheels. The rotary mechanism includes a transmission wheel mounted on the first rotating shaft and a transmission rod eccentrically hinged to the transmission wheel. The transmission rod is connected to the pager rod after passing through a guide sleeve.

[0021] In order to enable the assembly of the roller, the paper turning mechanism further includes a mounting frame for mounting the roller. The mounting frame includes a first mounting arm located outside the first side of the roller and a second mounting arm located outside the second side of the roller. A second rotating shaft is provided inside the roller and rotates around its axis. One end of the second rotating shaft is constrained to the first mounting arm from the first side of the roller, and the other end of the second rotating shaft is constrained to the second mounting arm from the second side of the roller. The roller is driven and connected to the first driving mechanism through the second rotating shaft.

[0022] Preferably, the first driving mechanism includes a first driving member mounted on the mounting frame and a first transmission mechanism connected between the first driving member and the second rotating shaft. The mounting frame is disposed on a first slide table, which is connected to a driving source, enabling the mounting frame to move back and forth along the direction between the second side and the first side of the paper. By driving the first slide table to move by the driving source, the roller can be moved closer to or away from the paper, thereby facilitating the placement and flipping of the paper.

[0023] Preferably, the clamping mechanism includes a clamping head and a second driving mechanism for driving the clamping head to clamp or release the paper. This clamping head clamps the first side of the paper, eliminating the need for pre-binding, making it suitable for different sizes and types of paper, and thus more versatile.

[0024] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a coding device, comprising an automatic page-turning structure and a coding device, characterized in that: the automatic page-turning structure adopts the above-mentioned automatic page-turning structure, and the coding device is disposed on the worktable.

[0025] In order to adjust the coding area according to different paper sizes, the worktable is provided with a bracket for mounting the inkjet printer and a third drive mechanism connected to the bracket. The bracket can move under the drive of the third drive mechanism to change the position of the inkjet printer.

[0026] To enable the automatic operation of the coding device, the worktable includes two spaced-apart first and second worktables. The placement position is located on the first worktable, which is connected to a fourth drive mechanism. The first worktable can move up and down under the drive of the fourth drive mechanism. The support and the third drive mechanism are both located on the second worktable. The support is also equipped with a pressure sensing module near the bottom of the coding device. The pressure sensing module and the fourth drive mechanism are electrically connected to a controller. The controller is configured to control whether the fourth drive mechanism stops moving up and down based on the pressure detection result of the pressure sensing module.

[0027] Compared with existing technologies, the advantages of this invention are as follows: On the one hand, the first side of the paper is pressed by a pressing mechanism, and the second side corner of the paper is flipped up by a paper flipping mechanism. On the other hand, the paper flipping mechanism allows the second side of the paper to enter the cylinder sequentially through the first notch and slit as the cylinder rotates, and then flip towards the first side of the paper, finally exiting from the second end of the cylinder, thus achieving automatic paper flipping. Therefore, this page-turning mechanism, while reducing manual labor intensity, also has the advantages of being able to adapt to different types of paper for automatic page turning, having a simpler page-turning process, and more accurate page turning. It can be used for automatic page turning of both bound and unbound paper documents. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the inkjet printer with an automatic page-turning structure in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 Another perspective structural diagram (paper omitted);

[0030] Figure 3 for Figure 1 A partial structural diagram of the automatic page-turning mechanism (excluding the paper-flipping and paper-turning mechanisms);

[0031] Figure 4 for Figure 1 A partial structural diagram of the automatic page-turning mechanism (paper flipping mechanism omitted);

[0032] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0033] Figure 6 for Figure 1 Schematic diagram of the installation structure of the paper flipping mechanism and the inkjet printer;

[0034] Figure 7 for Figure 6 A schematic diagram of the middle roller. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] like Figure 1 and Figure 2 As shown, the coding device in this embodiment includes a coding printer 5 and an automatic page-turning structure. Wherein... Figures 1-7As shown, the automatic page-turning structure in this embodiment includes a workbench 1, a page-turning mechanism, and a pressing mechanism 3. The workbench 1 has a placement position 11 for placing paper documents made up of multiple stacked sheets of paper a. The pressing mechanism 3 and the page-turning mechanism are both set on the workbench 1. In this embodiment, the pressing mechanism 3 presses the first side 1a of the paper a, while the page-turning mechanism flips up one corner of the second side 1b of the paper a. The second side 1b of the paper a is set opposite to the first side 1a of the paper a.

[0037] To allow for adjustments to the coding position as needed, the worktable 1 is equipped with a bracket 51 for mounting the inkjet printer 5 and a third drive mechanism 52 connected to the bracket 51. The bracket 51 can move under the drive of the third drive mechanism 52, thereby changing the position of the inkjet printer 5. Specifically, the bracket 51 can move back and forth along the direction between the second side 1b and the first side 1a of the paper a, and can also move up and down. Figure 1 and Figure 2 The third drive mechanism 52 can employ existing hydraulic cylinders or pneumatic cylinders and slides. The third drive mechanism 52 includes a first hydraulic cylinder 521 and a second hydraulic cylinder 522. The piston rod of the first hydraulic cylinder 521 can move back and forth along the direction between the second side 1b of the paper a and the first side 1a of the paper a. (In this embodiment, for example...) Figure 3 As shown, the direction between the second side 1b of paper a and the first side 1a of paper a is denoted as the width direction of paper a, and the direction of the second side 1b of paper a is the length direction of paper a. A second slide 523 is fixed on the piston rod of the first hydraulic cylinder 521 and slides on the cylinder body of the first hydraulic cylinder 521. A second hydraulic cylinder 522 is fixed on the second slide 523. The piston rod of the second hydraulic cylinder 522 can extend and retract up and down. The bracket 51 is fixed to the piston rod of the second hydraulic cylinder 522, so that the bracket 51 can move together with the piston rod of the second hydraulic cylinder 522.

[0038] To facilitate the flipping of the paper, a second notch 112 is provided on the workbench 1 at the edge of the placement position 11. Figure 3 The second notch is formed by cutting off a corner of the workbench placement position 11), and the second notch 112 is positioned below the corner of the paper a to be flipped up. A lifting mechanism 4 is provided at the second notch 112 to lift the paper a by moving upward. Figure 3As shown, the placement position 11 is rectangular, and a row of multiple positioning posts 111 are provided at intervals along the edge of the wide side of the placement position 11. All positioning posts 111 form a positioning mechanism for paper alignment. The second notch 112 is located at one corner of the rectangle and is triangular. The lifting mechanism 4 uses hydraulic or electric drive to lift the corner of the paper a to be flipped up. For example, a lifting hydraulic cylinder is used. The piston rod of the lifting hydraulic cylinder extends and retracts up and down. A lifting strip is fixed at the top of the piston rod of the lifting hydraulic cylinder. When the lifting hydraulic cylinder is activated, the paper a can be lifted by the lifting strip.

[0039] like Figure 3 and Figure 4 As shown, the pressing mechanism 3 includes a pressing head 31 and a second driving mechanism 32 for driving the pressing head 31 to press or release the paper a. The second driving mechanism 32 can also be a pressing hydraulic cylinder or a pressing air cylinder, with the piston rod of the pressing hydraulic cylinder or pressing air cylinder extending and retracting vertically, and the pressing head 31 fixed to the lower end of the piston rod. Furthermore, the second driving mechanism 32 is fixed to the worktable 1 by a fixing frame 33, which includes two opposing columns 331 and a crossbar 332 connecting the two columns 331. The second driving mechanism 32 is mounted on the crossbar 332, and drives the pressing head 31 to move up and down, thereby pressing or releasing the paper a.

[0040] The page-turning mechanism includes a paper-lifting mechanism 21 and a paper-flipping mechanism 22. In this embodiment, the paper-lifting mechanism 21 is disposed on the workbench 1 and is used to lift one corner of the second side 1b of the paper a placed on the placement position 11, such as... Figure 4 As shown, the paper lifting mechanism 21 is disposed near the second notch 112, and the paper flipping mechanism 22 is disposed on the worktable 1 and is disposed opposite to the second side 1b of the paper a.

[0041] like Figure 4 and Figure 5 As shown, the paper flipping mechanism 21 in this embodiment includes a flipping component 211, a second driving component 212, and a second transmission mechanism 213. The flipping component 211 includes a page-separating bar 211a and a friction head 211b arranged vertically adjacent to each other. The friction head 211b is located above the corner of the paper a to be flipped. The second transmission mechanism 213 is connected between the second driving component 212 and the flipping component 211. The second driving component 212 drives the flipping component 211 to rotate through the second transmission mechanism 213, so that the friction head 211b folds up the corner of the paper a to be flipped, and the page-separating bar 211a separates the folded paper a into pages. Figure 5The friction head 211b is located below the page divider 211a, and the middle part of the friction head 211b partially overlaps with the middle projection of the page divider 211a. This ensures that after the friction head 211b rubs up the corner of the paper a to be flipped, the page divider 211a can better separate it into pages, thus improving the page separation accuracy.

[0042] In this embodiment, the second driving component 212 is a motor, and the second transmission mechanism 213 includes a synchronous belt pulley mechanism, a reciprocating rocking mechanism, and a rotary mechanism. The synchronous belt pulley mechanism includes a first driving wheel 2133 mounted on the power output shaft of the second driving component 212, a first driven wheel 2134 mounted on the first rotating shaft 2132, and a first synchronous belt 2131 wound around the outer periphery of the first driving wheel 2133 and the first driven wheel 2134. The reciprocating rocking mechanism includes a first rocking wheel 20a mounted on the first rotating shaft 2132 and a second rocking wheel 21a coaxially mounted with the friction head 211b. A first connecting rod 22a is eccentrically hinged between the first rocking wheel 20a and the second rocking wheel 21a. The rotary mechanism includes a transmission wheel 20b mounted on the first rotating shaft 2132 and a transmission rod 21b eccentrically hinged to the transmission wheel 20b. The transmission rod 21b is connected to the pager 211a after passing through a guide sleeve 22b. Figure 4 The second drive component 212 and the second transmission mechanism 213 are both installed inside the U-shaped frame 01 facing the opening of the second notch 112. Figure 4 The U-shaped frame 01 (without the top cover) has a reciprocating swing mechanism and a rotary mechanism located on opposite sides inside the U-shaped frame 01. The guide sleeve 22b is fixedly installed on the inner wall of the U-shaped frame 01. The page-turning rod 211a and the friction head 211b are both exposed through the opening of the U-shaped frame 01 to perform the paper-turning operation.

[0043] like Figure 6 As shown, the paper flipping mechanism 22 in this embodiment includes a hollow roller 221 with open ends and a first driving mechanism connected to the roller 221. The roller 221 extends along the second side 1b of the paper a. The first end of the roller 221 is located adjacent to the paper flipping mechanism 21, and the first end of the roller 221 has a first notch 222 for the corner of the paper a to be flipped and enter. The wall of the roller 221 has a cut 223 from the first notch 222 at the first end to the second end for the second side 1b of the paper a to enter. The roller 221 can rotate around its axis under the drive of the first driving mechanism, so that the second side 1b of the paper a can enter the roller 221 sequentially through the first notch 222 and the cut 223 when the roller 221 rotates and flips towards the first side 1a of the paper a, and finally exits from the second end of the roller 221. Figure 7In this embodiment, the roller 221 is cylindrical. A first notch 222 is located on the wall surface (i.e., the side wall of the roller 221) at the first end of the roller 221 and extends circumferentially. Preferably, the depth of the first notch 222 gradually increases along the rotation direction of the roller 221, forming an arc shape. The cut 223 connects to the first notch 222 and extends spirally along the axial direction of the roller 221 to the second end of the roller 221, with the spiral direction opposite to the rotation direction of the roller 221. Figure 7 As can be seen, the cut is connected to the shallower part of the first notch 222, so that the two sides of the opening of the cut 223 are no longer on the first end face of the roller. Thus, the setting of the first notch 222 is conducive to the smooth introduction of the corner of the paper a into the cut 223 through the first notch 222, and finally realizes the flipping of the paper a.

[0044] To enable the rotation of the roller 221, the paper turning mechanism 22 further includes a mounting bracket 224 for mounting the roller 221. The mounting bracket 224 includes a first mounting arm 2241 located outside the first side of the roller 221 and a second mounting arm 2242 located outside the second side of the roller 221. A second rotating shaft 225 is disposed inside the roller 221 and rotates about its axis. One end of the second rotating shaft 225 is constrained from the first side of the roller 221 to the first mounting arm 2241, and the other end of the second rotating shaft 225 is constrained from the second side of the roller 221 to the second mounting arm 2242. The roller 221 is driven and connected to the first drive mechanism via the second rotating shaft 225. To accommodate papers of different widths, the worktable 1 is also equipped with a drive source 14 that can drive the roller 221 to move along the width direction of the paper. This drive source 14 can also be a drive cylinder or a drive hydraulic cylinder, whose piston rod can move back and forth along the direction between the second side 1b and the first side 1a of the paper a, and is fixedly supported on a first slide 13 that slides on the cylinder body of the drive cylinder or the drive hydraulic cylinder. This first slide 13 can be fixedly connected to the mounting bracket 224. Figure 6 As shown, the first drive mechanism includes a first drive member 2261 mounted on the mounting bracket 224 and a first transmission mechanism connected between the first drive member 2261 and the second rotating shaft 225. Specifically, the first drive member 2261 is a motor fixed on the mounting bracket 224. The first transmission mechanism includes a second synchronous belt 2262, a second driven wheel 2263 mounted on the second rotating shaft 225, and a second driving wheel 2264 mounted on the power output shaft of the first drive member 2261. The second synchronous belt 2262 is wound around the outer periphery of the second driving wheel 2264 and the second driven wheel 2263. Thus, under the action of the drive source 14, the entire paper flipping mechanism 22 can be driven to move closer to or further away from the paper a to be flipped as needed.

[0045] For ease of installation and use, such as Figure 1 and Figure 2 As shown, the workbench 1 includes two spaced-apart first workbench 10a and second workbench 10b. The placement position 11 is located on the first workbench 10a. The first workbench 10a is connected to a fourth drive mechanism 6, allowing it to move up and down under the drive of the fourth drive mechanism 6. In this embodiment, the fourth drive mechanism 6 is a lifting liquid level cylinder or a lifting air cylinder. The piston rod of this lifting liquid level cylinder or lifting air cylinder extends and retracts vertically, and it moves up and down along vertically distributed guide rails to improve the stability of the first workbench 10a during vertical movement. As more paper is flipped, the placement position 11 is raised to meet the smooth flipping requirements of the paper flipping mechanism. The paper flipping mechanism 22, the support 51, and the third drive mechanism 52 are all located on the second workbench 10b. Figure 6 As shown, the inkjet printer 5 is suspended by a bracket 51. The bracket 51 is also equipped with a pressure sensing module 53 located near the bottom of the inkjet printer 5. The roller 221 in the paper flipping mechanism 22 is located near the second side 1b of the paper a. The paper lifting mechanism 21 is located on one side of the first worktable 10a and is positioned towards the corner of the paper a to be flipped. In this embodiment, the pressure sensing module 53 is a pressure sensor.

[0046] The pressure sensing module 53 and the fourth drive mechanism 6 are electrically connected to a controller (not shown in the figure). The controller is configured to control whether the fourth drive mechanism 6 stops lifting based on the pressure detection result of the pressure sensing module 53. The controller is also electrically connected to the second drive member 212 and the first drive member 2261 to automatically control the lifting mechanism 4, the second drive member 212, the first drive member 2261, the second drive mechanism 32, the third drive mechanism 52, the drive source 14, and the inkjet printer 5 to perform corresponding actions according to the paper placement, ultimately achieving automatic paper turning and adapting to different inkjet printing areas on the paper. The second worktable 10b is also equipped with an identifier 8 facing the paper a for counting the turned-up sheets. This identifier 8 is electrically connected to the controller and can be a visual identifier, transmitting the paper counting result to the controller.

[0047] The working process of the inkjet printing device in this embodiment is as follows:

[0048] Step 1: Place the paper document made up of multiple sheets of paper a on the placement position 11, and align the width direction of the paper a with the positioning post 111, and keep the second side 1b of the paper a above the second notch 112. Control the second drive mechanism 32 to make the pressing head 31 press the first side 1a of the paper a.

[0049] Step 2: Before flipping and coding the paper, the controller controls the third drive mechanism 52, the fourth drive mechanism 6, and the drive source 14 to operate according to the coding position of the paper a, so that the inkjet printer 5 is in a preset position, and the roller 221 is close to the paper a and can be accurately flipped. At the same time, the first worktable 10a can stop rising after the pressure sensing module 53 detects the pressure signal. The controller stores the optimal action parameters of the third drive mechanism 52, the fourth drive mechanism 6, and the drive source 14 obtained by repeated experiments on the paper a. That is, the controller can control the third drive mechanism 52, the fourth drive mechanism 6, and the drive source 14 to operate according to the stored optimal action parameters.

[0050] Step 3: Control the inkjet printer 5 to print on paper a using the controller, and proceed to step 4 after the printing is completed;

[0051] Step 4: Control the lifting mechanism 4 via the controller to lift the corner of the second side 1b of the paper a;

[0052] Step 5: Control the second drive unit 212 and the first drive unit 2261 to work through the controller, so that the friction head 211b will fold up the corner of the paper a to be turned up, and the folded paper a will be separated by the paging bar 211a. Then, the second side 1b of the paper a can enter the roller 221 in sequence through the first notch 222 and the cut 223 when the roller 221 rotates and turn towards the first side 1a of the paper a, and finally pass out from the second end of the roller 221.

[0053] Step 6: Continue to use the same method as in Steps 3 to 5 to sequentially print and flip the pages of each sheet a in the paper document.

[0054] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic page-turning structure, comprising: The workbench (1) has a placement space (11) for placing paper documents made up of multiple sheets of paper (a) stacked together; A page-turning mechanism is set on the workbench (1) for turning the pages of the paper (a) placed in the placement position (11); Its features also include: A pressing mechanism (3) is provided on the workbench (1) for pressing the first side (1a) of the paper (a) placed on the placement position (11); The page-turning mechanism further includes: A paper flipping mechanism (21) is set on the workbench (1) to flip up one corner of the second side (1b) of the paper (a) placed on the placement position (11), wherein the second side (1b) of the paper (a) is arranged opposite to the first side (1a) of the paper (a); A paper flipping mechanism (22) is disposed on a workbench (1). The paper flipping mechanism (22) includes a hollow roller (221) with open ends and a first drive mechanism connected to the roller (221). The roller (221) extends along the second side (1b) of the paper (a). The first end of the roller (221) is disposed adjacent to the paper flipping mechanism (21), and the first end of the roller (221) has a first notch (222) for the corner of the paper (a) to be flipped into. The wall surface has a cut (223) from the first notch (222) at the first end to the second end for the second side (1b) of the paper (a) to enter. The roller (221) can rotate around its axis under the drive of the first driving mechanism, so that the second side (1b) of the paper (a) can enter the roller (221) sequentially from the first notch (222) and the cut (223) when the roller (221) rotates and flip towards the first side (1a) of the paper (a), and finally pass out from the second end of the roller (221).

2. The automatic page-turning structure according to claim 1, characterized in that: The workbench (1) has a second notch (112) at the edge of the placement position (11). The second notch (112) is positioned below the corner of the paper (a) to be flipped up. A lifting mechanism (4) is provided at the second notch (112) to lift the paper (a) by moving upward.

3. The automatic page-turning structure according to claim 2, characterized in that: The paper flipping mechanism (21) includes: The flipping component (211) includes a page divider (211a) arranged vertically adjacent to each other and a friction head (211b), wherein the friction head (211b) is located above the corner of the paper (a) to be flipped; Second drive unit (212); The second transmission mechanism (213) is connected between the second drive member (212) and the flipping member (211). The second drive member (212) drives the flipping member (211) to rotate through the second transmission mechanism (213), so that the friction head (211b) folds up the corner of the paper (a) to be flipped up, and the paging bar (211a) paginates the folded paper (a).

4. The automatic page-turning structure according to claim 3, characterized in that: The second transmission mechanism (213) includes a synchronous belt pulley mechanism, a reciprocating oscillating mechanism, and a rotary mechanism. The synchronous belt pulley mechanism includes a first driving pulley (2133) mounted on the power output shaft of the second drive member (212), a first driven pulley (2134) mounted on the first rotating shaft (2132), and a first synchronous belt (2131) wound around the outer periphery of the first driving pulley (2133) and the first driven pulley (2134). The reciprocating oscillating mechanism includes a mechanism mounted on the first rotating shaft (2132). The first pendulum wheel (20a) and the second pendulum wheel (21a) are coaxially mounted on the friction head (211b). A first connecting rod (22a) is eccentrically hinged between the first pendulum wheel (20a) and the second pendulum wheel (21a). The rotary mechanism includes a transmission wheel (20b) mounted on the first rotating shaft (2132) and a transmission rod (21b) eccentrically hinged to the transmission wheel (20b). The transmission rod (21b) is connected to the pager (211a) after passing through a guide sleeve (22b).

5. The automatic page-turning structure according to any one of claims 1 to 4, characterized in that: The paper flipping mechanism (22) further includes a mounting bracket (224) for mounting the roller (221). The mounting bracket (224) includes a first mounting arm (2241) located outside the first side of the roller (221) and a second mounting arm (2242) located outside the second side of the roller (221). A second rotating shaft (225) is provided inside the roller (221) and rotates about its axis. One end of the second rotating shaft (225) is constrained from the first side of the roller (221) to the first mounting arm (2241), and the other end of the second rotating shaft (225) is constrained from the second side of the roller (221) to the second mounting arm (2242). The roller (221) is driven and connected to the first driving mechanism through the second rotating shaft (225).

6. The automatic page-turning structure according to claim 5, characterized in that: The first drive mechanism includes a first drive member (2261) mounted on the mounting bracket (224) and a first transmission mechanism connected between the first drive member (2261) and the second rotating shaft (225). The mounting bracket (224) is disposed on a first slide (13), which is connected to a drive source (14) and enables the mounting bracket (224) to move back and forth in the direction between the second side (1b) of the paper (a) and the first side (1a) of the paper (a).

7. The automatic page-turning structure according to claim 1, characterized in that: The clamping mechanism (3) includes a clamping head (31) and a second drive mechanism (32) for driving the clamping head (31) to clamp or release the paper (a).

8. A coding device, comprising an automatic page-turning structure and a coding printer (5), characterized in that: The automatic page-turning structure adopts the automatic page-turning structure as described in any one of claims 1 to 7 above, and the inkjet printer (5) is disposed on the workbench (1).

9. The inkjet printing device according to claim 8, characterized in that: The workbench (1) is provided with a bracket (51) for mounting the inkjet printer (5) and a third drive mechanism (52) connected to the bracket (51). The bracket (51) can move under the drive of the third drive mechanism (52) to change the position of the inkjet printer (5).

10. The inkjet printing device according to claim 9, characterized in that: The workbench (1) includes two spaced-apart first workbench (10a) and second workbench (10b). The placement position (11) is located on the first workbench (10a). The first workbench (10a) is connected to the fourth drive mechanism (6). The first workbench (10a) can move up and down under the drive of the fourth drive mechanism (6). The bracket (51) and the third drive mechanism (52) are both located on the second workbench (10b). The bracket (51) is also provided with a pressure sensing module (53) near the bottom of the inkjet printer (5). The pressure sensing module (53) and the fourth drive mechanism (6) are electrically connected to a controller. The controller is configured to control whether the fourth drive mechanism (6) stops moving up and down based on the pressure detection result of the pressure sensing module (53).

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