Preparation method of a flexible paper

Abstract

The present invention discloses a method for preparing flexible paper, comprising the following steps: First, the paper raw materials are shredded, soaked, cooked, and bleached; Second, the paper raw materials are crushed and then soaked again, maintaining the pulp concentration between 3% and 4.5%; Third, polyacrylamide, sodium carboxymethyl starch, sodium dodecyl sulfonate, modified dialdehyde starch, and a flocculant are added to the pulp, and the volume ratio of the pulp to the above-mentioned additives is 100:1:2:5:4.5:0.15 in sequence. In the present invention, a set of spiral stirring paddles and four sets of spiral stirring frames are provided inside each of the two stirring bins. Through a set of spiral stirring paddles and four sets of spiral stirring frames, the stirring effect of the equipment on the pulp inside the stirring bins can be greatly improved, and the spiral stirring paddles and spiral stirring frames inside the two stirring bins can be driven to rotate and stir simultaneously through the driving device. While ensuring the stirring effect of the equipment on the pulp, the actual energy consumption of the equipment can also be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of paper manufacturing, and specifically to a preparation method for flexible paper. Background Art

[0002] Paper is an essential necessity in modern life, so many paper mills have emerged. The production of paper is obtained from pulp, and the pulp water needs to be continuously stirred during the manufacturing process to ensure the uniformity of the pulp and the quality of the finished product. During the paper production process, a stirring device is usually required to complete the production of paper, so that the pulp water can be evenly mixed with additives to ensure the quality of the subsequent paper product.

[0003] Currently, when stirring pulp, usually only after the pulp in a set of stirring tanks is stirred and discharged can the next batch of pulp be stirred. This undoubtedly reduces the stirring efficiency of the entire pulp stirring equipment, thereby reducing the processing efficiency of the entire equipment; and the existing pulp stirring equipment often has only one set of stirring structures, and the stirring effect it can achieve is very limited, and it is impossible to effectively improve the stirring effect of the equipment on the pulp; at the same time, after the pulp in the stirring tank is discharged, there will still be a large amount of residue on the inner wall of the stirring tank, which will not only cause deviation in the proportion of additives in the pulp in the next stirring tank, affecting the quality of the paper product, but also increase the workload of subsequent cleaning of the stirring equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a preparation method for flexible paper to solve the related problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A preparation method for flexible paper, comprising the following steps:

[0006] I. Cut, soak, cook, and bleach the paper raw materials.

[0007] II. Then crush the paper raw materials and soak them again, keeping the pulp concentration between 3% and 4.5%.

[0008] III. Subsequently, add polyacrylamide, sodium carboxymethyl starch, sodium dodecyl sulfonate, modified dialdehyde starch, and a flocculant to the pulp, and the volume ratio of the pulp to the above additives is 100:1:2:5:4.5:0.15 in sequence.

[0009] IV. Then evenly stir the pulp added with additives, and control the stirring speed at 190 r / min.

[0010] V. Then pour the pulp onto the screen, drain the water, let the fibers form a paper layer on the screen, and press the paper layer to drain the water again.

[0011] 6. Finally, the paper layer is dried to obtain flexible paper, which is then cut and packaged.

[0012] Preferably, a processing equipment used in a method for preparing flexible paper comprises a support frame, characterized in that: a cylindrical silo is arranged on the inner side of the support frame, a rotating mechanism for driving the cylindrical silo to rotate is arranged on one side of the support frame, a stirring silo is arranged on the inner top and inner bottom of the cylindrical silo, a partition is arranged at the middle position inside the cylindrical silo, first bearings are symmetrically installed at the center positions of the top and the inner bottom of the partition, a main rotating shaft rod is commonly installed on the inner sides of two groups of the first bearings, and the top and bottom ends of the main rotating shaft rod respectively extend to the interiors of the two groups of stirring silos and are symmetrically installed with U-shaped frames, spiral stirring paddles are symmetrically installed on the top and bottom of the outer side of the main rotating shaft rod, A first arc scraper is symmetrically installed at both ends of the top of the U-shaped frame, a second arc scraper is installed at the end of the first arc scraper away from the U-shaped frame, four pairs of second bearings are evenly installed at non-central positions on the top and bottom of the partition, and an auxiliary rotating shaft is commonly installed on the inner side of each pair of second bearings, the top and bottom ends of the outer sides of the auxiliary rotating shaft extend to the interior of the two groups of mixing bins respectively and are installed with spiral mixing frames, a driving device for driving the main rotating shaft and the auxiliary rotating shaft to rotate is arranged inside the partition, electromagnetic valves are symmetrically installed at the center positions of the top and bottom of the cylindrical silo, and a funnel is installed at the end of the electromagnetic valve away from the cylindrical silo, and a control panel is installed on one side of the support frame.

[0013] Preferably, the rotating mechanism includes a mounting frame installed on one side of the supporting frame, a second servo motor is installed at one end of the top of the mounting frame, and a second worm is installed on the output shaft of the second servo motor, third bearings are symmetrically installed at the middle position on both sides of the supporting frame, a rotating tube is installed on the inner side of the third bearing, and the ends of the two groups of rotating tubes close to each other are fixedly connected to the middle position of the outer side of the cylindrical silo, a conductive slip ring is installed on the inner side of one group of rotating tubes, and a second worm wheel cooperating with the second worm is installed on the end of the outer side of one group of rotating tubes away from the cylindrical silo.

[0014] Preferably, the driving device includes a first worm gear, which is located near the center of the compartment, a first worm wheel that cooperates with the first worm gear is installed at the middle position of the outer side of the main rotating shaft rod, a first servo motor that is transmission-connected to one end of the first worm gear is installed at the middle position of the outer side of the cylindrical silo, a driving gear is installed at the middle position of the outer side of the main rotating shaft rod, and driven gears that mesh with the driving gear are installed at the middle position of the outer sides of the four groups of auxiliary rotating shaft rods.

[0015] Preferably, bearing seats are symmetrically installed at the middle position of the top of the mounting frame, and the two ends of the outer side of the second worm are respectively fixedly connected to the inner rings of the two groups of bearing seats.

[0016] Preferably, connecting bearings are symmetrically installed at the two ends of the outer side of the first worm, and the outer rings of the two groups of connecting bearings are fixedly connected to the inner wall of the partition bin.

[0017] Preferably, the support frame includes a bottom frame, support columns, cross bars and a fixing frame. The bottom frame is located below the driving device, and support columns are symmetrically installed at the four corners of the top of the bottom frame. Fixing frames are jointly installed at the tops of the two groups of support columns on the same side, and cross bars are jointly installed at the middle positions of the two groups of support columns at the same end.

[0018] Preferably, the thicknesses of the two groups of second arc-shaped scrapers gradually become thinner from one side to the other side, and the two groups of second arc-shaped scrapers are symmetric about the center of the main rotating shaft rod.

[0019] Preferably, oil seal parts are arranged at the inner bottoms of the two groups of mixing bins near the main rotating shaft rod and the auxiliary rotating shaft rod.

[0020] Preferably, a triangular prism is arranged at the inner bottom of the U-shaped frame, and one side of the triangular prism is fixedly connected to the inner bottom of the U-shaped frame.

[0021] Compared with the prior art, the present invention provides a method for preparing flexible paper, which has the following beneficial effects:

[0022] 1. Two mixing bins for mixing pulp are arranged inside the cylindrical bin in the present invention, and the cylindrical bin is driven to rotate by controlling the rotating mechanism, so that the positions of the two mixing bins are replaced up and down. During the process of adding pulp and additives into the upper mixing bin, the well-mixed pulp in the lower mixing bin can be discharged orderly, greatly improving the mixing efficiency of the entire mixing equipment and ensuring the processing efficiency of the equipment.

[0023] 2. A set of spiral stirring paddles and four sets of spiral stirring frames are arranged inside each of the two mixing bins in the present invention. The mixing effect of the pulp inside the mixing bin by the equipment can be greatly improved through a set of spiral stirring paddles and four sets of spiral stirring frames, and the spiral stirring paddles and spiral stirring frames inside the two mixing bins can be driven to rotate and stir simultaneously through the driving device. While ensuring the mixing effect of the pulp by the equipment, the actual energy consumption of the equipment can be effectively reduced.

[0024] 3. In the present invention, second arc-shaped scrapers capable of scraping the inner wall are provided at positions close to the inner wall inside the two groups of stirring bins. During the discharging process of the bottom group of stirring bins, the main rotating shaft drives the two second arc-shaped scrapers at the top to assist in stirring the pulp inside the top stirring bin. In cooperation with the spiral stirring paddles and the spiral stirring frames, the stirring effect of the equipment on the pulp can be further improved. At the same time, the two second arc-shaped scrapers inside the bottom stirring bin can scrape the inner wall, causing the pulp attached to the inner wall of the bottom group of stirring bins to gradually gather and be discharged from the discharge port at the bottom of this group of stirring bins. This can avoid deviation in the component ratio of additives in the pulp in the stirring bin next time, which affects the quality of the finished paper, and also reduces the workload of subsequent cleaning inside the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the front view of the present invention;

[0026] Figure 2 is the front sectional view of the present invention;

[0027] Figure 3 is the rear view of the present invention;

[0028] Figure 4 is the front sectional view of the cylindrical bin of the present invention;

[0029] Figure 5 is the top sectional view of the partition bin of the present invention;

[0030] Figure 6 is the three-dimensional schematic diagram of the cylindrical bin of the present invention;

[0031] Figure 7 is the schematic diagram of the connection between the main rotating shaft and the U-shaped frame of the present invention;

[0032] Figure 8 is the top view of the U-shaped frame of the present invention;

[0033] Figure 9 of the present invention Figure 2 is the enlarged view of part A;

[0034] Figure 10 of the present invention Figure 4 is the enlarged view of part B.

[0035] In the figure: 1. Support frame; 11. Control panel; 2. Cylindrical silo; 21. Stirring silo; 211. Main rotating shaft rod; 212. Spiral stirring paddle; 213. Auxiliary rotating shaft rod; 214. Spiral stirring frame; 215. U-shaped frame; 216. First arc-shaped scraper; 217. Second arc-shaped scraper; 218. First bearing; 219. Second bearing; 22. Compartment; 23. Driving device; 231. First worm gear; 232. First worm; 233. First servo motor; 234. Driving gear; 235. Driven gear; 24. Electromagnetic valve; 25. Funnel opening; 26. Triangular prism; 3. Rotating mechanism; 31. Mounting frame; 32. Second servo motor; 33. Second worm; 34. Third bearing; 35. Rotating pipe; 36. Second worm gear; 37. Conductive slip ring. Detailed implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1-10 , the present invention provides a technical solution: a method for preparing flexible paper, comprising the following steps:

[0038] I. Cut, soak, cook and bleach the paper raw materials.

[0039] II. Then, crush the paper raw materials and soak them again, keeping the pulp concentration between 3% and 4.5%.

[0040] III. Subsequently, add polyacrylamide, sodium carboxymethyl starch, sodium dodecyl sulfonate, modified dialdehyde starch and flocculant to the pulp, and the volume ratio of the pulp to the above additives is 100:1:2:5:4.5:0.15 in sequence.

[0041] IV. Then, evenly stir the pulp added with additives, and control the stirring speed at 190 r / min.

[0042] V. Next, pour the pulp onto the screen, drain the water, let the fibers form a paper layer on the screen, and press the paper layer to drain the water again.

[0043] VI. Finally, dry the paper layer to obtain flexible paper, and then cut and package it.

[0044] As a preferred technical solution of this embodiment, a processing equipment used in a method for preparing flexible paper includes a support frame 1, characterized in that: a cylindrical silo 2 is arranged on the inner side of the support frame 1, a rotating mechanism 3 for driving the cylindrical silo 2 to rotate is arranged on one side of the support frame 1, a stirring silo 21 is arranged on the inner top and inner bottom of the cylindrical silo 2, a partition 22 is arranged at the middle position inside the cylindrical silo 2, first bearings 218 are symmetrically installed at the center position of the inner top and inner bottom of the partition 22, a main rotating shaft rod 211 is installed on the inner side of two groups of first bearings 218, and the top and bottom ends of the main rotating shaft rod 211 extend to the inside of the two groups of stirring silos 21 respectively and are symmetrically installed with a U-shaped frame 215, a spiral stirring paddle 212 is symmetrically installed on the top and bottom of the outer side of the main rotating shaft rod 211, and the U-shaped frame 215 A first arc scraper 216 is symmetrically installed at both ends of the top, a second arc scraper 217 is installed at one end of the first arc scraper 216 away from the U-shaped frame 215, four pairs of second bearings 219 are evenly installed at non-central positions of the top and bottom of the partition 22, and an auxiliary rotating shaft 213 is commonly installed on the inner side of each pair of second bearings 219, the top and bottom ends of the outer sides of the auxiliary rotating shaft 213 extend to the interior of the two groups of mixing bins 21 respectively and are installed with a spiral mixing frame 214, a driving device 23 for driving the main rotating shaft 211 and the auxiliary rotating shaft 213 to rotate is arranged inside the partition 22, electromagnetic valves 24 are symmetrically installed at the center positions of the top and bottom of the cylindrical silo 2, and a funnel mouth 25 is installed at one end of the electromagnetic valve 24 away from the cylindrical silo 2, and a control panel 11 is installed on one side of the support frame 1.

[0045] As a preferred technical solution of this embodiment, the rotating mechanism 3 includes a mounting frame 31 installed on one side of the support frame 1, a second servo motor 32 is installed at one end of the top of the mounting frame 31, and a second worm 33 is installed on the output shaft of the second servo motor 32, third bearings 34 are symmetrically installed at the middle position on both sides of the support frame 1, and a rotating tube 35 is installed on the inner side of the third bearing 34, and the ends of the two groups of rotating tubes 35 close to each other are fixedly connected to the middle position of the outer side of the cylindrical silo 2, a conductive slip ring 37 is installed on the inner side of one group of rotating tubes 35, and a second worm wheel 36 that cooperates with the second worm 33 is installed on the outer end of one group of rotating tubes 35 away from the cylindrical silo 2.

[0046] As a preferred technical solution of this embodiment, the driving device 23 includes a first worm 232, which is located near the center of the compartment 22, a first worm wheel 231 that cooperates with the first worm 232 is installed at the middle position of the outer side of the main rotating shaft 211, a first servo motor 233 that is transmission-connected to one end of the first worm 232 is installed at the middle position of the outer side of the cylindrical silo 2, a driving gear 234 is installed at the middle position of the outer side of the main rotating shaft 211, and a driven gear 235 that meshes with the driving gear 234 is installed at the middle position of the outer side of the four sets of auxiliary rotating shafts 213.

[0047] As a preferred technical solution of this embodiment, bearing seats are symmetrically installed at the middle position of the top of the mounting frame 31, and both ends of the outer side of the second worm 33 are fixedly connected to the inner rings of the two groups of bearing seats, which helps to improve the rotational stability of the second worm 33.

[0048] As a preferred technical solution of this embodiment, connecting bearings are symmetrically installed at both ends of the outer side of the first worm 232, and the outer rings of the two groups of connecting bearings are fixedly connected to the inner wall of the partition bin 22, which helps to improve the stability of the first worm 232 during rotation.

[0049] As a preferred technical solution of this embodiment, the support frame 1 includes a bottom frame, support columns, cross bars and a fixing frame. The bottom frame is located below the driving device 23, and support columns are symmetrically installed at the four corners of the top of the bottom frame. Fixing frames are commonly installed at the tops of the two groups of support columns on the same side, and cross bars are commonly installed at the middle positions of the two groups of support columns at the same end, which helps to stably support the cylindrical bin 2.

[0050] As a preferred technical solution of this embodiment, the thickness of the two groups of second arc-shaped scrapers 217 gradually thins from one side to the other side, and the two groups of second arc-shaped scrapers 217 are centrosymmetric with the main rotating shaft rod 211, which helps to scrape off the pulp adhering to the inner wall of the mixing bin 21 more easily.

[0051] As a preferred technical solution of this embodiment, oil seal parts are provided at the inner bottoms of the two groups of mixing bins 21 near the main rotating shaft rod 211 and the auxiliary rotating shaft rod 213, which helps to improve the sealing performance at the connection between the rotating shaft rods 211 and the auxiliary rotating shaft rod 213 and the partition bin 22.

[0052] As a preferred technical solution of this embodiment, a triangular prism 26 is provided at the inner bottom of the U-shaped frame 215, and one side of the triangular prism 26 is fixedly connected to the inner bottom of the U-shaped frame 215. Cooperating with the rotating U-shaped frame 215, it helps to uniformly and orderly introduce the pulp into the interior of the mixing bin 21.

[0053] Example 1, as Figures 4-5As shown in the figure, when it is necessary to improve the stirring effect and efficiency of the equipment on the pulp, after adding pulp raw materials and additives into the interiors of the two groups of stirring bins 21, close the two groups of electromagnetic valves 24, and then control the driving device 23 to drive the spiral stirring paddle 212 and the four groups of spiral stirring frames 214 to stir the pulp inside the two groups of stirring bins 21. During the process, control the second servo motor 32 to drive the second worm 33 to rotate, and drive the rotating pipe 35 to rotate by the transmission of the second worm 33 and the second worm gear 36, so as to drive the cylindrical bin 2 to rotate around the rotating pipe 35 as the axis, making the pulp inside the stirring bin 21 continuously tumble. Coupled with the stirring of the spiral stirring paddle 212 and the four groups of spiral stirring frames 214, the stirring efficiency and effect of the stirring equipment on the pulp can be further improved. The input end of the slip ring 37 is electrically connected to the control panel 11, and the output ends of the slip ring 37 are respectively electrically connected to the first servo motor 233 and the electromagnetic valve 24. Therefore, during the rotation of the cylindrical bin 2, it will not affect the control of the control panel 11 on the first servo motor 233 and the electromagnetic valve 24.

[0054] Embodiment 2, as Figures 4-5 As shown in the figure, when controlling the spiral stirring paddle 212 and the spiral stirring frame 214 to stir the pulp inside the stirring bin 21, open the electromagnetic valve 24 at the discharge port of the top group of stirring bins 21 to let the pulp inside the bottom group of stirring bins 21 discharge. During the process, since the spiral stirring paddle 212 and the spiral stirring frame 214 inside the bottom group of stirring bins 21 are still stirring, the pulp can be discharged evenly from the electromagnetic valve 24, and the main rotating shaft rod 211 also scrapes the inner wall of the stirring bin 21 through the first arc-shaped scraper 216 and the second arc-shaped scraper 217, so that the pulp inside the stirring bin 21 can be discharged more thoroughly, avoiding affecting the actual ratio of the pulp and additives subsequently added into the stirring bin 21.

[0055] Working principle: Before use, connect the device to the power supply. First, control a group of electromagnetic valves 24 at the top to open through the control panel 11. Then, add pulp and additives to a group of stirring bins 21 at the top through the funnel opening 25 and the electromagnetic valves 24. Next, close the electromagnetic valves 24, and then control the rotating mechanism 3 to drive the cylindrical bin 2 to rotate clockwise by 180°, so that the positions of the two groups of stirring bins 21 are reversed. During this process, control the first servo motor 233 to drive the first worm 232 to rotate. The first worm 232 cooperates with the first worm gear 231 to drive the main rotating shaft rod 211 to rotate. The spiral stirring paddle 212 on the main rotating shaft rod 211 stirs the pulp inside the stirring bin 21. The driving gear 234 on the main rotating shaft rod 211 cooperates with the driven gear 235 to drive the four groups of auxiliary rotating shaft rods 213 to rotate synchronously. The spiral stirring frames 214 on the auxiliary rotating shaft rods 213 stir the pulp inside the stirring bin 21 again. When the pulp in a group of stirring bins 21 is stirred, control this group of stirring bins 21 to rotate to the downward position, and then control the electromagnetic valves 24 on this group of stirring bins 21 to open, and discharge the pulp inside this group of stirring bins 21. Moreover, the main rotating shaft rod 211 also scrapes the inner wall of the stirring bin 21 through the first arc-shaped scraper 216 and the second arc-shaped scraper 217.

[0056] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0057] The electrical components appearing in this article are all electrically connected to the external main controller and the 220V mains power supply, and the main controller can be a conventional known device such as a computer for control.

[0058] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a flexible paper, characterized in that, It includes the following steps: First, chop, soak, cook, and bleach the paper raw materials; Second, then crush the paper raw materials and soak them again, keeping the pulp concentration between 3% and 4.5%; Third, subsequently add additives to the pulp: polyacrylamide, sodium carboxymethyl starch, sodium dodecyl sulfonate, modified dialdehyde starch, and flocculant, and the ratio of the amount of pulp to the above additives is 100:1:2:5:4.5:0.15 in sequence; Fourth, then evenly stir the pulp with additives added, and control the stirring speed at 190 r / min; Fifth, then pour the pulp onto the screen, drain the water, let the fibers form a paper layer on the screen, and press the paper layer to drain the water again; Sixth, finally dry the paper layer to obtain flexible paper, and then cut and package it; The processing equipment used in the preparation method of the flexible paper includes a support frame (1). Inside the support frame (1), there is a cylindrical bin (2). On one side of the support frame (1), there is a rotating mechanism (3) for driving the cylindrical bin (2) to rotate. At the inner top and inner bottom of the cylindrical bin (2), there are stirring bins (21). At the middle position inside the cylindrical bin (2), there is a partition bin (22). At the central positions of the inner top and inner bottom of the partition bin (22), first bearings (218) are symmetrically installed. Inside the two groups of first bearings (218), a main rotating shaft rod (211) is jointly installed. The top and bottom ends of the main rotating shaft rod (211) respectively extend into the interiors of the two groups of stirring bins (21) and U-shaped frames (215) are symmetrically installed. At the top and bottom of the outer side of the main rotating shaft rod (211), spiral stirring paddles (212) are symmetrically installed. At the two ends of the top of the U-shaped frame (215), first arc-shaped scrapers (216) are symmetrically installed. One end of the first arc-shaped scraper (216) away from the U-shaped frame (215) is installed with a second arc-shaped scraper (217). At non-central positions of the inner top and inner bottom of the partition bin (22), four pairs of second bearings (219) are evenly installed. Inside each pair of second bearings (219), an auxiliary rotating shaft rod (213) is jointly installed. The top and bottom ends of the outer side of the auxiliary rotating shaft rod (213) respectively extend into the interiors of the two groups of stirring bins (21) and spiral stirring frames (214) are installed. Inside the partition bin (22), there is a driving device (23) for driving the main rotating shaft rod (211) and the auxiliary rotating shaft rod (213) to rotate. At the central positions of the top and bottom of the cylindrical bin (2), electromagnetic valves (24) are symmetrically installed. One end of the electromagnetic valve (24) away from the cylindrical bin (2) is installed with a funnel mouth (25). On one side of the support frame (1), there is a control panel (11); At the inner bottom of the U-shaped frame (215), there is a triangular prism (26), and one side of the triangular prism (26) is fixedly connected to the inner bottom of the U-shaped frame (215); The rotating mechanism (3) includes a mounting frame (31) installed on one side of the support frame (1). At one end of the top of the mounting frame (31), a second servo motor (32) is installed, and a second worm (33) is installed on the output shaft of the second servo motor (32). At the middle positions on both sides of the support frame (1), third bearings (34) are symmetrically installed. Inside the third bearings (34), rotating tubes (35) are installed. One end of the two rotating tubes (35) close to each other is fixedly connected to the middle position on the outer side of the cylindrical bin (2). Inside one of the rotating tubes (35), a conductive slip ring (37) is installed. At one end of the outer side of one of the rotating tubes (35) away from the cylindrical bin (2), a second worm gear (36) that cooperates with the second worm (33) is installed.

2. The preparation method of the flexible paper according to claim 1, characterized in that: The driving device (23) includes a first worm (232) located at a position close to the center inside the partition bin (22). At the middle position on the outer side of the main rotating shaft rod (211), a first worm gear (231) that cooperates with the first worm (232) is installed. At the middle position on the outer side of the cylindrical bin (2), a first servo motor (233) that is drivingly connected to one end of the first worm (232) is installed. At the middle position on the outer side of the main rotating shaft rod (211), a driving gear (234) is installed. At the middle positions on the outer sides of the four auxiliary rotating shaft rods (213), driven gears (235) that mesh with the driving gear (234) are installed.

3. The preparation method of the flexible paper according to claim 1, wherein: At the middle position on the top of the mounting frame (31), bearing seats are symmetrically installed. The two ends of the outer side of the second worm (33) are respectively fixedly connected to the inner rings of the two bearing seats.

4. The preparation method of the flexible paper according to claim 2, wherein: At the two ends of the outer side of the first worm (232), connecting bearings are symmetrically installed, and the outer rings of the two connecting bearings are fixedly connected to the inner wall of the partition bin (22).

5. The preparation method of the flexible paper according to claim 1, characterized in that: The thicknesses of the two second arc-shaped scrapers (217) gradually become thinner from one side to the other side, and the two second arc-shaped scrapers (217) are centrosymmetric about the center of the main rotating shaft rod (211).

6. The method for preparing the flexible paper according to claim 1, wherein: At the positions of the inner bottoms of the two mixing bins (21) close to the main rotating shaft rod (211) and the auxiliary rotating shaft rods (213), oil seal parts are provided.

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