Large roll paper roll dividing device

Abstract

The utility model relates to the technical field of roll paper separation, and provides a large-coil roll paper separation device which can wind and separate large-coil roll paper into a plurality of small roll paper. A conical plug clamping scheme is adopted by the small bobbin paper core clamping component, so that the small bobbin paper core winding device can be compatible with winding of small bobbin paper cores with different diameters and thicknesses; through linkage of the pressure roller paper feeding assembly, the small bobbin paper core clamping and roll-dividing assembly and the belt pulley linkage assembly, paper core clamping, paper feeding traction alignment and synchronous stepping of hand-cranking paper rolling and paper feeding are achieved, the problems that due to manual roll-dividing, paper rolling is not uniform, the tightness degree is not uniform, and the roll-dividing efficiency is low are effectively solved, paper pollution caused by manual roll-dividing is also avoided, and the production efficiency is improved. The use experience of customers is improved; the roll paper separating device is simple in structure and reasonable in design, can be widely used for separating roll paper in public health places such as expressway service areas, tourist attractions, stations, airports and shopping malls, and has high practicability and popularization value.

Description

Technical Field

[0001] This utility model relates to the field of paper roll splitting technology, and in particular to a large roll paper splitting device. Background Technology

[0002] To reduce waste and lower operating costs, large rolls of toilet paper are typically purchased from the market. However, due to their varying sizes and thicknesses, these rolls do not match the dimensions of the toilet paper rolls in the restrooms and cannot be filled. In practice, management personnel must manually roll the paper into smaller rolls before placing them into the restroom toilet paper rolls for customer use.

[0003] When paper roll consumption is high, manual resizing is inefficient and has problems such as uneven resizing, uneven winding tightness, and easy contamination of paper during the resizing process. This cannot meet the demand of customers in a timely manner and reduces the user experience.

[0004] Therefore, it is necessary to design a large roll paper rewinding device to uniformly wind, rewind, and repackage large rolls of paper of different sizes and thicknesses. This will solve the drawbacks of manual rewinding, improve efficiency, effectively reduce paper waste, and lower the operating costs of public restroom services. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a large roll paper splitting device to overcome the drawbacks of manual splitting, improve efficiency, reduce paper waste, and lower the operating costs of public restroom services.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A large roll paper rewinding device includes: a base support, a large roll paper fixing assembly, a pressure roller feeding assembly, and a small roll paper core clamping and rewinding assembly located on the same side of the base support; and a belt pulley linkage assembly located to the left of the pressure roller feeding assembly and the small roll paper core clamping and rewinding assembly; the large roll paper fixing assembly, the pressure roller feeding assembly, and the small roll paper core clamping and rewinding assembly are all rotatably connected to the base support; the pressure roller feeding assembly and the small roll paper core clamping and rewinding assembly rotate synchronously through the belt pulley linkage assembly;

[0008] The base support includes: a left support, a base connecting plate one and a base connecting plate two located at the bottom of the left support, and a right support located above the middle section of the base connecting plate one and the base connecting plate two. The pressure roller paper feeding assembly is located between the left support and the right support. The large paper roll fixing assembly and the small paper roll core clamping and rewinding assembly are rotatably connected to the left support.

[0009] Preferably, the pressure roller feeding assembly includes: a feeding roller, a pressure roller disposed above the feeding roller, and a guide plate, the lower end of the guide plate being aligned with the feeding roller, and the left end of the feeding roller being connected to a pulley linkage assembly.

[0010] Preferably, the two ends of the pressure roller are respectively installed in the waist hole bushings on the left and right brackets, and the pressure roller can slide along the waist hole bushings. The pressure roller shaft is connected to one end of the pressure spring, and the other end of the pressure spring is connected to the waist hole bushing.

[0011] Preferably, the large roll paper fixing assembly includes: a large roll paper support arm fixedly connected to the left bracket, a large roll paper shaft rotatably connected to the large roll paper support arm, and two roll paper limiting buckles detachably connected to the large roll paper shaft, with the large roll paper placed between the two roll paper limiting buckles.

[0012] Preferably, the small paper core clamping and rewinding assembly includes: a clutch-type main shaft rotatably connected to a left support at its left end; a left clamping plug, a paper core, and a right clamping plug sequentially sleeved with the clutch-type main shaft; a clutch-type secondary shaft detachably connected to the right end of the clutch-type main shaft; a clamping plate fixedly connected to the left end of the clutch-type secondary shaft; a crank handle detachably connected to the right end of the clutch-type secondary shaft; a support frame located to the left of the crank handle; and a telescopic spring located between the clamping plate and the support frame. The clutch-type secondary shaft and the support frame can slide and rotate relative to each other. The other end of the support frame is rotatably connected to the right support. The left end of the clutch-type main shaft is connected to a belt pulley linkage assembly. Paper clamping pins are detachably connected to the outside of the paper core. Several elastic pressure blocks are provided on the left side of the clamping plate.

[0013] Preferably, the left and right clamping plugs are conical, with a shaft hole in the middle of the left and right clamping plugs and a keyway on the shaft hole. The clutch-type main shaft is provided with a connecting key, and the keyway engages with the connecting key. The right end of the clutch-type main shaft is a male head, the left end of the clutch-type secondary shaft is a female head, and the right end of the clutch-type secondary shaft is provided with a crank handle.

[0014] Preferably, the support frame is rotatably connected to the clamping and splitting rotating shaft hole provided on the right bracket, a positioning block is provided on the left side of the clamping and splitting rotating shaft hole, and a clamping temporary hole is provided above the clamping and splitting rotating shaft hole.

[0015] Preferably, the pulley linkage assembly includes: a drive pulley fixedly connected to the clutch-type main shaft, a driven pulley fixedly connected to the paper feed roller, and a transmission belt connecting the drive pulley and the driven pulley.

[0016] Preferably, a thickness control scale assembly is provided at the connection position between the left support and the small paper core clamping and rewinding assembly. The thickness control scale assembly includes: a scale slide rail, a composite scale slidably connected to the scale slide rail, and an arc-shaped scale. The composite scale includes: a slider, a limiting rod located on the right side of the slider, and an adjusting bolt located on the left side of the slider. The adjusting bolt can slide along the scale slide rail.

[0017] Preferably, the top of the paper roll limiting buckle is provided with a limiting bolt, and the bottom of the limiting bolt protrudes from the paper roll limiting buckle and abuts against the large paper roll shaft.

[0018] This utility model discloses a large roll paper rewinding device, which has the following beneficial effects.

[0019] This invention can divide a large roll of toilet paper into several smaller rolls. The small roll core clamping component uses a conical plug clamping scheme, compatible with small roll cores of different diameters and thicknesses. Through the linkage of the pressure roller feeding assembly, the small roll core clamping and dividing assembly, and the belt pulley linkage assembly, core clamping, paper feeding traction alignment, and synchronized stepping of hand-cranked paper rolling and paper feeding are achieved. This effectively solves the problems of uneven rolls, inconsistent tightness, and low dividing efficiency caused by manual dividing, and also avoids paper contamination caused by manual dividing, improving the customer's user experience. This invention has a simple structure and reasonable design, and can be widely used for toilet paper dividing in public health places such as highway service areas, tourist attractions, stations, airports, and shopping malls, possessing high practicality and promotional value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is another structural schematic diagram of the present utility model.

[0022] Figure 3 This is an exploded view of the parts of this utility model.

[0023] Figure 4 This is an exploded view of another part of this utility model.

[0024] Figure 5 This is a schematic diagram of the engagement between the clutch-type main shaft and the clutch-type secondary shaft of this utility model.

[0025] Figure 6 This is a schematic diagram of the composite ruler structure of this utility model.

[0026] In the attached diagram: 1-Base bracket; 11-Base connecting plate one; 12-Base connecting plate two; 13-Left bracket; 14-Right bracket; 141-Clipping temporary hole; 142-Clipping splitting rotation shaft hole; 143-Positioning block; 2-Large roll paper fixing assembly; 21-Large roll paper support arm; 22-Large roll paper shaft; 23-Large roll paper; 24-Roll paper limit buckle; 3-Pressure roller feeding assembly; 31-Guide Cardboard; 32-Pressure roller; 33-Feed roller; 34-Pressure spring; 4-Small paper core clamping and rewinding assembly; 41-Left clamping plug; 42-Roll paper clamping pin; 43-Small roll paper core; 44-Right clamping plug; 451-Clutch type main shaft; 452-Clutch type secondary shaft; 453-Handle hole; 46-Clamping plate; 47-Telescopic spring; 48-Handle; 49-Support frame; 5-Pulley linkage assembly; 51-Driven wheel; 52-Drive wheel; 53-Transmission belt; 6-Scale assembly; 61-Scale slide rail; 62-Arc-shaped scale; 63-Composite scale; 631-Limit rod; 632-Adjusting bolt; 633-Slider. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0029] Reference Figures 1 to 4 A large roll paper slitting device includes a base support 1, a large roll paper fixing assembly 2, a pressure roller feeding assembly 3, and a small roll paper core clamping and slitting assembly 4 located on the same side of the base support 1, and a belt pulley linkage assembly 5 located on the left side of the pressure roller feeding assembly 3 and the small roll paper core clamping and slitting assembly 4; the large roll paper fixing assembly 2, the pressure roller feeding assembly 3, and the small roll paper core clamping and slitting assembly 4 are all rotatably connected to the base support 1; the pressure roller feeding assembly 3 and the small roll paper core clamping and slitting assembly 4 rotate synchronously through the belt pulley linkage assembly 5;

[0030] The base support 1 includes: a left support 13, a base connecting plate 11 and a base connecting plate 12 located at the bottom of the left support 13, and a right support 14 located above the middle section of the base connecting plate 11 and the base connecting plate 12. The pressure roller paper feeding assembly 3 is located between the left support 13 and the right support 14. The large paper roll fixing assembly 2 and the small paper roll core clamping and winding assembly 4 are rotatably connected to the left support 13. The large roll paper slitting device 23 is placed on the workbench. The large roll paper 23 to be slitting is assembled on the large roll paper 23 fixing component, and the small roll paper core 43 is fixed on the small roll paper core 43 clamping and slitting component. The large roll paper 23 is pulled smoothly into the pressure roller feeding component 3. The small roll paper core clamping and slitting component 4 is rotated to pull the roll paper to the small roll paper core 43 and then fixed. The small roll paper core clamping and slitting component 4 is rotated at a uniform speed to evenly wind the packaged product. When the small roll paper core clamping and slitting component 4 is rotated, the belt pulley linkage component 5 synchronously drives the pressure roller feeding component 3 to rotate. Example 2

[0031] Please refer to Figure 2 and Figure 3 Based on Embodiment 1, as a preferred embodiment, in this embodiment, the pressure roller feeding assembly 3 includes: a feeding roller 33, a pressure roller 32 disposed above the feeding roller 33, and a guide plate 31. The feeding roller 33 is rotatably connected to the base bracket 1 via bearings. The lower end of the guide plate 31 is aligned with the feeding roller 33. The left end of the feeding roller 33 is connected to the pulley linkage assembly 5. When it is necessary to manually pull the large roll of paper 23 to be smoothly placed in the pressure roller feeding assembly 3, the roll of paper is smoothly placed on the feeding guide plate 31, and then guided by the guide plate 31 to the feeding roller 33 between the pressure roller 32. The guide plate 31 is set at an inclined angle at the front end of the feeding roller 33 to achieve paper feeding alignment. The paper roll is pressed by the pressure roller 32 and the feeding roller 33, and the paper roll is rubbed and pulled forward. In this embodiment, the pressure roller 32 is divided into a roller body and a shaft body. The shaft body is connected to the base bracket 1, and the shaft body is connected to the roller body via bearings. The feeding roller 33 is driven by the pulley linkage assembly 5.

[0032] Preferably, in this embodiment, the two ends of the pressure roller 32 are respectively installed in the waist hole bushings on the left bracket 13 and the right bracket 14. The pressure roller 32 can slide along the waist hole bushing. The pressure roller 32 shaft is connected to one end of the pressure spring 34, and the other end of the pressure spring 34 is connected to the waist hole bushing. The pressure spring 34 makes the paper feed roller 33 and the pressure roller 32 press evenly. The paper feed pressure can be adjusted by adjusting the spring angle. Example 3

[0033] Please refer to Figures 2 to 5Based on Embodiment 1, in this embodiment, the small paper core clamping and rewinding assembly 4 includes: a clutch-type main shaft 451 rotatably connected to the left support 13 at its left end; a left clamping plug 41 sequentially sleeved with the clutch-type main shaft 451; a paper core and a right clamping plug 44; a clutch-type secondary shaft 452 detachably connected to the right end of the clutch-type main shaft 451; a clamping plate 46 fixedly connected to the left end of the clutch-type secondary shaft 452; a crank handle 48 detachably connected to the right end of the clutch-type secondary shaft 452; a support frame 49 located on the left side of the crank handle 48; and an extension plate located between the clamping plate 46 and the support frame 49. A spring 47 and a crank handle 48 are connected to the clutch-type secondary shaft 452 via a crank handle hole 453 on the clutch-type secondary shaft 452. The clutch-type secondary shaft 452 and the support frame 49 can slide and rotate relative to each other. The other end of the support frame 49 is rotatably connected to the right bracket 14. The left end of the clutch-type main shaft 451 is connected to the pulley linkage assembly 5. Paper clamping pins are detachably connected to the outside of the paper roll core. Several elastic pressure blocks are provided on the left side of the clamping plate 46. The elastic pressure blocks press the right clamping plug 44 under the thrust of the extension spring 47 to clamp and fix the small paper roll core 43. The crank handle 48 is turned to roll the paper into separate rolls. Preferably, in this embodiment, the support frame 49 is rotatably connected to the clamping and splitting rotating shaft hole 142 on the right bracket 14. A positioning block 143 is provided on the left side of the clamping and splitting rotating shaft hole 142, and a clamping temporary placement hole 141 is provided above the clamping and splitting rotating shaft hole 142.

[0034] When clamping the small roll paper core 43: First, pull the crank handle 48 to the right. At this time, the telescopic spring 47 is compressed, and the clutch-type secondary shaft 452 slides to the right relative to the support frame 49. At this time, the clutch-type secondary shaft 452 can be separated from the clutch-type main shaft 451. Rotate the support frame 49 with the crank handle 48 around the clamping split-roll rotating shaft hole 142 as the center. The clutch-type secondary shaft 452 can be inserted into the clamping temporary hole 141. Place the small roll paper core 43 between the left and right clamping plugs 44, so that the left and right clamping plugs 44 are concentrically pressed against the inner wall of the small roll paper core 43. Rotate the support frame 49 with the crank handle 48 around the clamping split-roll rotating shaft hole 142 as the center. Engage the clutch-type secondary shaft 452 with the clutch-type main shaft 451. At the same time, the right clamping plug 44 clamps the small roll paper core 43 under the push of the elastic pressure block and the telescopic spring 47, thus completing the clamping of the small roll paper core 43.

[0035] When splitting is required, manually crank the handle 48 to pull the roll of paper to the position of the small roll core 43, use the roll paper clamp 42 to fix the roll of paper and the small roll core 43, and crank the handle 48 at a uniform speed to wind the paper to the finished thickness.

[0036] When it is necessary to remove the finished roll of paper, first pull the crank handle 48 to the right. At this time, the telescopic spring 47 is compressed, and the clutch-type secondary shaft 452 slides to the right relative to the support frame 49. At this time, the clutch-type secondary shaft 452 can be separated from the clutch-type main shaft 451, and the clamping state of the right clamping plug 44 and the small roll paper core 43 can be loosened. By rotating the support frame 49 with the crank handle 48 around the clamping splitting rotating shaft hole 142 as the center, the clutch-type secondary shaft 452 can be inserted into the clamping temporary hole 141. After removing the right clamping plug 44 and the roll paper clamping pin 42, the split small roll paper finished product can be taken out, and the next small roll paper core 43 can be clamped at the same time.

[0037] Preferably, in this embodiment, the left clamping plug 41 and the right clamping plug 44 are conical, and the conical plug clamping scheme can be used to accommodate the winding of small paper roll cores 43 with different diameters and thicknesses. The left clamping plug 41 and the right clamping plug 44 are provided with a shaft hole, and a keyway is provided on the shaft hole. The clutch-type main shaft 451 is provided with a connecting key, and the keyway is engaged with the connecting key. The right end of the clutch-type main shaft 451 is a male head, and the left end of the clutch-type secondary shaft 452 is a female head. The right end of the clutch-type secondary shaft 452 is provided with a crank 48. Example 4

[0038] like Figures 1 to 3 As shown, based on Embodiment 1, in this embodiment, preferably, the large roll paper fixing assembly 2 includes: a large roll paper support arm 21 fixedly connected to the left bracket 13, a large roll paper shaft 22 rotatably connected to the large roll paper support arm 21, and two roll paper limiting buckles 24 detachably connected to the large roll paper shaft 22. The large roll paper 23 is placed between the two roll paper limiting buckles 24. Preferably, in this embodiment, the top of the roll paper limiting buckle 24 is provided with a limiting bolt, the bottom of the limiting bolt protrudes from the roll paper limiting buckle 24 and abuts against the large roll paper shaft 22. The inner core of the large roll paper 23 to be packaged is fitted onto the large roll paper shaft 22. The left and right sides of the large roll paper 23 are secured to the large roll paper shaft 22 by the roll paper limiting buckles 24, restricting the large roll paper 23 from shifting when it is rolled. The large roll paper 23 rotates together with the large roll paper shaft 22 under the traction force of the roll paper. Example 5

[0039] like Figure 2 and Figure 4As shown, based on embodiments 2 and 3, the belt pulley linkage assembly 5 in this embodiment includes: a drive wheel 52 fixedly connected to the clutch-type main shaft 451, a driven wheel 51 fixedly connected to the paper feed roller 33, and a transmission belt 53 connecting the drive wheel 52 and the driven wheel 51. The drive wheel 52 is mounted on the left end of the clutch-type main shaft 451 of the left bracket 13 and fixed with a positioning pin, and the driven wheel 51 is mounted on the left end of the paper feed roller 33 of the left bracket 13 and fixed with a positioning pin. The drive wheel 52 and the driven wheel 51 are synchronized in rotation by the transmission belt 53. When the crank handle 48 is turned by hand, the clutch-type secondary shaft 452 drives the clutch-type main shaft 451 and the drive wheel 52 to rotate. The drive wheel 52 is linked by the transmission belt 53 to rotate synchronously with the driven wheel 51 and the paper feed roller 33, realizing the synchronous rotation of the hand-cranked paper winding and the paper feeding step. Example 6

[0040] Please refer to Figure 2 , 4 and Figure 6 Based on Embodiment 1, in this preferred embodiment, a thickness control scale assembly 6 is provided at the connection position between the left support 13 and the small paper core clamping and rewinding assembly 4. The thickness control scale assembly 6 includes: a scale slide rail 61, a composite scale 63 slidably connected to the scale slide rail 61, and an arc-shaped scale 62. The composite scale 63 includes: a slider 633, a limiting rod 631 located on the right side of the slider 633, and an adjusting bolt 632 located on the left side of the slider 633. The adjusting bolt 632 can slide along the scale slide rail 61. Loosening the adjusting bolt 632 allows the composite scale 63 to slide to the desired thickness scale position, and then tightening the adjusting bolt 632 achieves thickness indication.

[0041] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Substitutions may include replacements for some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.

Claims

1. A large roll paper rewinding device, characterized in that, include: The base support (1), the large paper fixing assembly (2), the pressure roller feeding assembly (3), and the small paper core clamping and rewinding assembly (4) are located on the same side as the base support (1), and the belt pulley linkage assembly (5) is located on the left side of the pressure roller feeding assembly (3) and the small paper core clamping and rewinding assembly (4); the large paper fixing assembly (2), the pressure roller feeding assembly (3), and the small paper core clamping and rewinding assembly (4) are all rotatably connected to the base support (1); the pressure roller feeding assembly (3) and the small paper core clamping and rewinding assembly (4) rotate synchronously through the belt pulley linkage assembly (5); The base support (1) includes: a left support (13), a base connecting plate one (11) and a base connecting plate two (12) located at the bottom of the left support (13), and a right support (14) located above the middle section of the base connecting plate one (11) and the base connecting plate two (12). The pressure roller paper feeding assembly (3) is located between the left support (13) and the right support (14). The large paper fixing assembly (2) and the small paper core clamping and splitting assembly (4) are rotatably connected to the left support (13).

2. The large roll paper rewinding device according to claim 1, characterized in that, The pressure roller feeding assembly (3) includes: a feeding roller (33), a pressure roller (32) disposed above the feeding roller (33), and a guide plate (31). The lower end of the guide plate (31) is aligned with the feeding roller (33), and the left end of the feeding roller (33) is connected to the pulley linkage assembly (5).

3. The large roll paper rewinding device according to claim 2, characterized in that, The two ends of the pressure roller (32) are respectively installed in the waist hole bushings on the left bracket (13) and the right bracket (14). The pressure roller (32) can slide along the waist hole bushing. The pressure roller (32) shaft is connected to one end of the pressure spring (34), and the other end of the pressure spring (34) is connected to the waist hole bushing.

4. The large roll paper rewinding device according to claim 1, characterized in that, The large roll paper fixing assembly (2) includes: a large roll paper support arm (21) fixedly connected to the left bracket (13), a large roll paper shaft (22) rotatably connected to the large roll paper support arm (21), and two roll paper limiting buckles (24) detachably connected to the large roll paper shaft (22). The large roll paper (23) is placed between the two roll paper limiting buckles (24).

5. A large roll paper rewinding device according to claim 1, characterized in that, The small paper core clamping and rewinding assembly (4) includes: a clutch-type main shaft (451) rotatably connected to the left support (13) at its left end; a left clamping plug (41) sequentially fitted to the clutch-type main shaft (451); a paper core and a right clamping plug (44); a clutch-type secondary shaft (452) detachably connected to the right end of the clutch-type main shaft (451); a clamping plate (46) fixedly connected to the left end of the clutch-type secondary shaft (452); and a crank (48) detachably connected to the right end of the clutch-type secondary shaft (452). The support frame (49) on the left side of the crank handle (48), the telescopic spring (47) between the clamping plate (46) and the support frame (49), the clutch-type sub-shaft (452) and the support frame (49) can slide and rotate relative to each other, the other end of the support frame (49) is rotatably connected to the right bracket (14), the left end of the clutch-type main shaft (451) is connected to the belt pulley linkage assembly (5), the paper core is detachably connected to a paper clamping needle, and the left side of the clamping plate (46) is provided with several elastic pressure blocks.

6. A large roll paper rewinding device according to claim 5, characterized in that, The left clamping plug (41) and the right clamping plug (44) are conical. The left clamping plug (41) and the right clamping plug (44) are provided with a shaft hole in the middle. The shaft hole is provided with a keyway. The clutch-type main shaft (451) is provided with a connecting key. The keyway is engaged with the connecting key. The right end of the clutch-type main shaft (451) is a male head. The left end of the clutch-type secondary shaft (452) is a female head. The right end of the clutch-type secondary shaft (452) is provided with a crank (48).

7. A large roll paper rewinding device according to claim 5, characterized in that, The support frame (49) is rotatably connected to the clamping and splitting rotating shaft hole (142) provided on the right bracket (14). The clamping and splitting rotating shaft hole (142) is provided with a positioning block (143) on the left side and a clamping temporary hole (141) is provided above the clamping and splitting rotating shaft hole (142).

8. A large roll paper rewinding device according to claim 2 or 5, characterized in that, The belt pulley linkage assembly (5) includes: a drive pulley (52) fixedly connected to the clutch-type main shaft (451), a driven pulley (51) fixedly connected to the paper feed roller (33), and a transmission belt (53) connecting the drive pulley (52) and the driven pulley (51).

9. A large roll paper rewinding device according to claim 1, characterized in that, The left support (13) is connected to the small paper core clamping and winding assembly (4) with a thickness control scale assembly (6). The thickness control scale assembly (6) includes: a scale slide rail (61), a composite scale (63) slidably connected to the scale slide rail (61), and an arc scale (62). The composite scale (63) includes: a slider (633), a limiting rod (631) located on the right side of the slider (633), and an adjusting bolt (632) located on the left side of the slider (633). The adjusting bolt (632) can slide along the scale slide rail (61).

10. A large roll paper rewinding device according to claim 4, characterized in that, The top of the paper roll limiting buckle (24) is provided with a limiting bolt, and the bottom of the limiting bolt passes through the paper roll limiting buckle (24) and abuts against the large paper roll shaft (22).

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