A power-assisted paper towel conveying and cutting module and a paper towel dispenser

Abstract

The present invention discloses a power-assisted paper towel conveying and cutting module and a paper towel dispenser, comprising a cutting roller, the cutting roller being provided with a rotating shaft for coaxial relative rotation, an inertia-assisted assembly being provided between the cutting roller and the rotating shaft, the inertia-assisted assembly comprising a self-rotating inertia wheel, a variable speed transmission structure connected between the inertia wheel, the cutting roller, and the rotating shaft, the variable speed transmission structure being used to link the rotation of the cutting roller about the rotating shaft with the self-rotation of the inertia wheel, with a transmission ratio greater than 1; a knife groove being provided on the outer periphery of the cutting roller, and a cutting knife assembly being provided within the knife groove that moves in and out following the rotation of the cutting roller. The inertial rotation of the inertia wheel allows for automatic paper delivery at a later stage, allowing the paper towel to be actively extended, and a certain length of paper towel can be automatically delivered even without a tension spring. Furthermore, compared to a tension spring, the paper pulling quality is greatly improved, and paper jams are less likely to occur.

Description

Technical Field

[0001] The present invention relates to the technical field of paper towel distribution, and in particular to a power-assisted paper towel conveying and cutting module and a paper towel dispenser. Background Art

[0002] The towel dispenser can realize automatic cutting of pulled-out paper towels. The paper towel dispenser generally uses a cutting roller with a cutting tool to distribute continuous paper towels into single paper towels of a set length. Now paper towel dispensers basically use tension springs to reset the cutting roller. For example, the patent number CN115379934A is named a cutting roller and paper dispenser. The structure using tension springs is difficult to install, the reset error is large, and a large space for movement is required. It is also relatively laborious to pull out paper. After long-term use, adverse symptoms such as elastic fatigue and breakage will occur. In addition, when the force of pulling the paper reaches a certain critical point, the farthest pulling point of the tension spring will be in a straight line with the center of the roller, resulting in jamming. Summary of the Invention

[0003] The purpose of the present invention is to provide a paper towel conveying and cutting module and a paper towel dispenser to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The technical solutions adopted to solve the above technical problems are:

[0005] First, the present invention provides a power-assisted paper towel conveying and cutting module, which includes: a cutting roller, a rotating shaft provided for the cutting roller to rotate coaxially relative to the rotating shaft, an inertia power-assisting assembly provided between the cutting roller and the rotating shaft, the inertia power-assisting assembly including a rotatable inertia wheel, a variable speed transmission structure connected between the inertia wheel, the cutting roller and the rotating shaft, the variable speed transmission structure being used to link the rotational motion of the cutting roller about the rotating shaft with the rotation of the inertia wheel, with a transmission ratio greater than 1; a knife groove provided on the outer periphery of the cutting roller, a cutting knife assembly provided in the knife groove that moves in and out following the rotation of the cutting roller.

[0006] The beneficial effect of this power-assisted paper towel conveying and cutting module is that when in use, the cutting roller can drive the cutting knife assembly to move in and out of the knife groove during the process of rotating around the rotating shaft to realize cutting of the paper towel. At the same time, in the initial stage of the rotation of the cutting roller, it is pushed by an external force, and the cutting roller is used as a driving source to drive the inertia wheel to rotate through the speed change transmission structure. At this time, the inertia wheel rotates relative to the cutting roller, and the speed of the inertia wheel is greater than that of the cutting roller. When the external force is removed, the inertia rotation force of the inertia wheel is used as the driving source to drive the cutting roller to rotate through the speed change transmission structure. In this way, when the paper towel is wound around the outer periphery of the cutting roller for paper discharge, the inertia rotation of the inertia wheel can realize automatic paper discharge and transportation in the later stage, so that the paper towel is actively extended. The cancellation of the tension spring can also automatically feed out a certain length of paper towel. Compared with the tension spring, the texture of paper pulling is greatly improved, and paper jam is not easy to occur.

[0007] As a further improvement of the above technical solution, side plates are provided on both ends of the cutting roller, the ends of the rotating shaft are fixedly connected to the side plates, the cutting knife assembly includes a blade movably arranged in a knife groove, and a linkage structure is provided between the blade, the cutting roller and the side plates, and the linkage structure is used to drive the blade to reciprocate in and out of the knife groove at the same time as the cutting roller rotates.

[0008] When in use, the two ends of the rotating shaft are fixed by two side plates, and the cutting roller rotates around the rotating shaft relative to the side plates. During the rotation of the cutting roller, the movement of the blade out and back is linked to the rotation of the cutting roller through a linkage structure. After the cutting roller rotates one circle, the blade can be driven out and back once, thereby realizing automatic cutting of the paper towel. The position setting of the knife groove needs to be determined according to the outer diameter of the cutting roller, and the length of the paper output can be adjusted by designing the two.

[0009] As a further improvement of the above technical solution, the linkage structure includes a transmission block fixed to the end of the blade and a cam groove arranged on the side plate. The transmission block is provided with a hinged end hinged to the end of the cutting roller and a sliding end slidingly matched with the cam groove.

[0010] The linkage structure of this scheme guides the sliding end on the transmission block to make eccentric rotation through the guidance of the cam groove, so as to drive the transmission block to swing relative to the cutting roller, thereby driving the blade to move out and retract the knife. During each rotation of the cutting roller, the sliding end slides one circle along the cam groove, and the transmission block is driven to swing around the hinged end by changing the distance between the sliding end and the axis of the cam groove, so as to drive the blade to move in and out reciprocally in the knife groove once.

[0011] As a further improvement of the above technical solution, it also includes a planetary gear set, which includes a sun gear and planetary gears located on one of the side plates, and an inner ring gear located at the end of the cutting roller, and the sun gear is driven by meshing with the inner ring gear through the planetary gears.

[0012] This solution also provides a planetary gear set to actively drive the cutting roller to rotate, wherein the planetary gear is driven to rotate by rotating the sun gear, and the cutting roller is driven to rotate when the planetary gear is engaged with the inner gear ring.

[0013] As a further improvement to the above technical solution, the sun gear is connected to a toggle gear via a one-way bearing. Regarding the rotation of the sun gear, this solution uses the toggle gear to drive the sun gear, and a one-way bearing is provided between the sun gear and the toggle gear. The toggle gear can only drive the sun gear to rotate when it rotates in the paper output direction, and cannot drive the sun gear to rotate when it rotates in the other direction.

[0014] As a further improvement of the above technical solution, the speed change transmission structure is a speed change gear box fixed in the cutting roller, and the two transmission ends of the speed change gear box are respectively connected to the rotating shaft and the inertia wheel.

[0015] The speed-changing transmission structure of this solution realizes transmission speed change through a speed-changing gearbox. When the cutting roller rotates around the rotating shaft, the gear set inside the speed-changing gearbox rotates to drive the inertia wheel to realize speed-changing rotation.

[0016] As a further improvement to the above technical solution, a counterweight is eccentrically positioned within the cutting roller. The counterweight, speed-changing transmission structure, and inertia wheel are located on the same side of the cutting roller. For different tissue types, when paper discharge resistance is high, this solution incorporates a counterweight to work with the inertia wheel to drive the cutting roller to continue rotating.

[0017] As a further improvement of the above technical solution, the cutting roller includes two semi-cylindrical shells connected to each other, at least two bearing seats are provided in one of the semi-cylindrical shells, and the rotating shaft is rotatably mounted on the bearing seats.

[0018] The cutting roller in this solution is made of two semi-cylindrical shells, which is convenient for assembly and disassembly maintenance. During maintenance, the two cylindrical shells can be disassembled to inspect the internal components of the cutting roller. The rotating shaft is installed on the bearing seat, and the bearing seat is fixed in one of the semi-cylindrical shells, which makes assembly more convenient.

[0019] In addition, the present invention also provides a paper towel dispenser, which includes the above-mentioned assisted paper towel conveying and cutting module, and also includes a bottom shell with a paper roll placement position and a roller installation position on the front side, and a fitting groove with an opening facing forward is provided at both ends of the roller installation position. The cutting roller is inserted into the fitting groove through a side plate fixedly connected to the rotating shaft, a cover plate is clamped on the front side of the paper roll placement position, and a guide roller located on the outer peripheral side of the cutting roller is clamped between the two side plates.

[0020] The paper towel dispenser in this solution adopts the above-mentioned cutting module. During assembly, the side plates at both ends of the cutting roller are clamped into the sleeve grooves of the roller body installation position, and then the cover plate is covered. The cover plate mainly limits the slot of the installation groove and is equivalent to a buckle plate. The guide roller is also installed between the two side plates in a clamping manner, realizing modular assembly and disassembly of the components, making it easy to clean when paper jams occur, and also conveniently replacing cutting modules with different outer diameters to adjust the paper cutting length.

[0021] The roll of paper is placed in the paper roll placement position. When in use, the paper towel passes between the cutting roller and the guide roller, and the roller presses the paper towel onto the outer periphery of the cutting roller. When the paper towel is pulled, the cutting roller is driven to rotate. The rotating cutting roller cuts the paper towel through the cutting knife assembly, and the inertia rotation of the inertia wheel drives the cutting roller to make subsequent rotations, allowing the paper to be actively extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is an exploded view of an embodiment of the paper towel dispenser provided by the present invention;

[0024] Figure 2 This is a structural schematic diagram of an embodiment of the paper towel dispenser provided by the present invention;

[0025] Figure 3 This is the power-assisted paper towel conveying and cutting module provided by the present invention, and the decomposition of one embodiment thereof Figure 1 ;

[0026] Figure 4 This is a cross-sectional view of an embodiment of the power-assisted paper towel conveying and cutting module provided by the present invention;

[0027] Figure 5 This is the power-assisted paper towel conveying and cutting module provided by the present invention, and the decomposition of one embodiment thereof Figure 2 ;

[0028] Figure 6 This is a schematic internal diagram of an embodiment of the cutting roller provided by the present invention. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the present invention, if there are words such as "several", it means one or more, and "more" means more than two. Greater than, less than, and exceed are understood as not including the number itself, and above, below, and within are understood as including the number itself.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference Figures 1 to 6 The paper towel dispenser of the present invention is provided in the following embodiments:

[0034] like Figure 1 and Figure 2 As shown, the paper towel dispenser includes an assisted paper towel conveying and cutting module and a bottom shell 800.

[0035] The assisted paper towel conveying and cutting module of this embodiment includes a cutting roller 100, which is coaxially provided with a rotating shaft 110. The cutting roller 100 rotates relative to the rotating shaft 110. Side plates 130 are provided on both ends of the cutting roller 100. The two ends of the rotating shaft 110 are respectively connected to the two side plates 130. The end of the rotating shaft 110 in this embodiment is installed on the mounting hole of the side plate 130 through a stop quick-release block to achieve quick release between the cutting roller 100 and the side plate 130. According to different paper output lengths, the cutting roller 100 with different outer diameters is preferably used, so that the cutting roller 100 is rotatably arranged around the rotating shaft 110 relative to the side plate 130.

[0036] The front side of the bottom shell 800 is provided with a paper roll placement position 810 at the top and a roller body installation position 820 at the bottom. Two paper roll supporting shaft frames are arranged opposite to each other on the paper roll placement position 810. When in use, the paper roll can be rotatably sleeved between the two paper roll supporting shaft frames.

[0037] Both ends of the roller body installation position 820 are provided with a set groove 821, and the opening of the set groove 821 faces forward. When in use, the side plates 130 on both ends of the cutting roller 100 can be snapped into the set groove 821 to achieve quick installation.

[0038] In addition, a cover plate 830 is mounted on the front side of the roll paper placement position 810 . The cover plate 830 mainly limits the slot of the mounting slot 821 . The cover plate 830 is equivalent to a buckle plate.

[0039] A plurality of arc-shaped guide frames that can be adjusted forward and backward are also provided in the roll paper placement position 810, and the arc-shaped guide frames are used to guide the paper towels.

[0040] A guide roller 900 is also clamped between the two side plates 130. The guide roller 900 is arranged on the outer peripheral side of the cutting roller 100. A snap groove is provided on the side plate 130. The two ends of the guide roller 900 are clamped in the snap groove through the snap blocks. During assembly, the side plates 130 at both ends of the cutting roller 100 are clamped in the set groove 821 of the roller body mounting position 820, and then the cover plate 830 is covered. The guide roller 900 is also installed between the two side plates 130 in a clamping manner, realizing modular and rapid assembly and disassembly of components, making it convenient to clean when paper jams, and also convenient to replace cutting modules with different outer diameters to adjust the paper cutting length.

[0041] When in use, the paper towel passes between the cutting roller 100 and the guide roller 900, and the roller 900 presses the paper towel against the outer periphery of the cutting roller 100. When the paper towel is pulled, the cutting roller 100 is driven to rotate.

[0042] A knife groove 120 is provided on the periphery of the cutting roller 100, and a cutting knife assembly 300 is provided in the knife groove 120, wherein the cutting knife assembly 300 can follow the rotation of the cutting roller 100 and move in and out of the knife groove 120. Specifically, the cutting knife assembly 300 of this embodiment includes a blade 310 and a linkage structure. The knife groove 120 is provided along the axial direction. The blade 310 is connected between the cutting roller 100 and the side plate 130 through the linkage structure. When the cutting roller 100 rotates, the linkage structure can drive the blade 310 to move in and out of the knife groove 120 reciprocatingly. The two ends of the rotating shaft 110 are fixed by two side plates 130, and the cutting roller 100 rotates around the rotating shaft 110 relative to the side plates 130. During the rotation of the cutting roller 100, the movement of the blade 310 and the retraction of the blade are linked to the rotation of the cutting roller 100 through a linkage structure. After the cutting roller 100 rotates one circle, the blade 310 can be driven to move out and retract once, thereby realizing automatic cutting of the paper towel. The position setting of the knife groove 120 needs to be determined according to the outer diameter of the cutting roller 100, and the length of the paper output can be adjusted by designing the two.

[0043] The linkage structure of this embodiment includes a transmission block 320, which is connected to the end of the blade 310. There are two transmission blocks 320 in this embodiment, and the two transmission blocks 320 are symmetrically installed at the two ends of the blade 310. A cam groove 330 is provided on the inner side of the side plate 130. Correspondingly, the two side plates 130 of this embodiment are both provided with a cam groove 330, wherein the transmission block 320 is provided with a hinged end 321 and a sliding end 322, wherein the hinged end 321 is hinged to the end of the cutting roller 100, and the sliding end 322 is hinged to the cam groove. 330 slides together, and the linkage structure guides the sliding end 322 on the transmission block 320 to make an eccentric rotation through the guidance of the cam groove 330, so as to drive the transmission block 320 to swing relative to the cutting roller 100, thereby driving the blade 310 to move out and retract the knife. During each rotation of the cutting roller 100, the sliding end 322 slides one circle along the cam groove 330, and the transmission block 320 is driven to swing around the hinged end 321 by changing the distance between the sliding end 322 and the axis of the cam groove 330, so as to drive the blade 310 to reciprocate in and out of the knife groove 120 once.

[0044] An inertia assist assembly is provided between the cutting roller 100 and the rotating shaft 110. The inertia assist assembly includes an inertia wheel 200 and a speed-changing transmission structure, wherein the inertia wheel 200 is rotatably mounted in the cutting roller 100, and the speed-changing transmission structure is connected between the inertia wheel 200, the cutting roller 100 and the rotating shaft 110. The speed-changing transmission structure is used to link the rotational motion of the cutting roller 100 around the rotating shaft 110 with the rotation of the inertia wheel 200, and to make the transmission ratio between the two greater than 1.

[0045] The speed transmission structure of this embodiment adopts a speed transmission gearbox 600. In some other embodiments, other speed transmission structures can be adopted, such as a connecting rod transmission structure or a transmission belt transmission structure. The speed transmission gearbox 600 is fixedly mounted on the inner wall of the cutting roller 100, and the gears on the two transmission ends of the speed transmission gearbox 600, one of which is fixed on the rotating shaft 110, and the other is connected to the inertia wheel 200, so that the speed transmission gearbox 600 can link the rotation of the cutting roller 100 around the rotating shaft 110 with the rotation of the inertia wheel 200. The transmission ratio of the speed transmission gearbox 600 is determined according to actual conditions. The speed transmission structure realizes transmission speed change through the speed transmission gearbox 600. When the cutting roller 100 rotates around the rotating shaft 110, the gear set inside the speed transmission gearbox 600 rotates to drive the inertia wheel 200 to achieve speed change rotation, wherein the rotation speed of the inertia wheel 200 is greater than the rotation speed of the cutting roller 100.

[0046] In the initial stage of the rotation of the cutting roller 100, it is pushed by an external force and uses the cutting roller 100 as a driving source to drive the inertia wheel 200 to rotate through the speed-changing transmission structure. At this time, the inertia wheel 200 rotates relative to the cutting roller 100, and the rotation speed of the inertia wheel 200 is greater than that of the cutting roller 100. When the external force is removed, the inertial rotation force of the inertia wheel 200 is used as the driving source to drive the cutting roller 100 to rotate through the speed-changing transmission structure. In this way, when the paper towel is wound around the outer periphery of the cutting roller 100 for paper discharge, the inertial rotation of the inertia wheel 200 can realize automatic paper discharge and transportation in the later stage, allowing the paper towel to be actively extended. The paper towel of a certain length can be automatically fed out even without the tension spring. Compared with the tension spring, the texture of the paper pulling is greatly improved, and paper jam is not prone to occur.

[0047] The inertia wheel 200 of this embodiment is made of metal material and has a certain weight. The weight of the inertia wheel 200 is determined according to actual needs.

[0048] This embodiment further includes a planetary gear set 400 , which includes a sun gear 410 , planetary gears 420 and an inner ring gear 430 .

[0049] The sun gear 410 and the planetary gear 420 are rotatably arranged on one of the side plates 130. There are two planetary gears 420. The sun gear 410 is coaxially arranged with the rotating shaft 110, and the inner ring gear 430 is arranged at the end of the cutting roller 100. The inner ring gear 430 in this embodiment is formed when the cutting roller 100 is formed, and is injection molded. The sun gear 410 is driven by the engagement of the two planetary gears 420 with the inner ring gear 430, and actively drives the cutting roller 100 to rotate through the planetary gear set 400, wherein the planetary gear 420 is driven to rotate by rotating the sun gear 410, and the cutting roller 100 is driven to rotate when the planetary gear 420 is engaged with the inner ring gear 430.

[0050] Furthermore, for the rotation of the sun gear 410, this solution is configured to toggle the gear 500 to drive the sun gear 410, and a one-way bearing is provided between the sun gear 410 and the toggle gear 500. When the toggle gear 500 rotates in the direction of paper output, it can drive the sun gear 410 to rotate, and when it rotates in the other direction, it cannot drive the sun gear 410 to rotate.

[0051] For different paper towels, when the resistance to paper discharge is large, this embodiment is further provided with a counterweight block 700, which is eccentrically and detachably installed in the cutting roller 100. The counterweight block 700, the speed change transmission structure and the inertia wheel 200 are located on the same side of the cutting roller 100. In this embodiment, the counterweight block 700 is provided to drive the cutting roller 100 to continue rotating together with the inertia wheel 200.

[0052] When the paper ejection resistance is small, the inertia wheel 200 is used to pull the paper with a force of 1 / 4 of the paper ejection length to make the paper extend actively; and when the paper ejection resistance is large, the inertia wheel 200 and the counterweight block 700 are used to pull the paper with a force of 1 / 4 of the paper ejection length to make the paper extend actively.

[0053] Furthermore, the cutting roller 100 includes two semi-cylindrical shells 140 that are clamped together, and a bearing seat 141 is installed in one of the semi-cylindrical shells 140. The number of bearing seats 141 is more than two, and the rotating shaft 110 is rotatably installed on the bearing seat 141. The cutting roller 100 is spliced ​​together by two semi-cylindrical shells 140, which is convenient for assembly and disassembly and maintenance. During maintenance, the two cylindrical shells 140 can be disassembled to inspect the components inside the cutting roller 100, and the rotating shaft 110 is installed on the bearing seat 141, and the bearing seat 141 is fixed in one of the semi-cylindrical shells 140, which makes assembly more convenient.

[0054] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A power-assisted paper towel conveying and cutting module, characterized in that: It includes: A cutting roller (100) is provided with a rotating shaft (110) for coaxial relative rotation, an inertia assist assembly is provided between the cutting roller (100) and the rotating shaft (110), the inertia assist assembly comprising a self-rotating inertia wheel (200), a speed change transmission structure connected to the inertia wheel (200), the cutting roller (100) and the rotating shaft (110), the speed change transmission structure being used to link the rotation of the cutting roller (100) around the rotating shaft (110) with the self-rotation of the inertia wheel (200), and a transmission ratio of the two being greater than 1; a knife groove (120) is provided on the outer periphery of the cutting roller (100), and a cutting knife assembly (300) is provided in the knife groove (120) so as to move in and out following the rotation of the cutting roller (100); In the initial stage of the rotation of the cutting roller (100), the cutting roller (100) is driven by an external force, and the inertia wheel (200) is driven to rotate by the variable speed transmission structure with the cutting roller (100) as the driving source. At this time, the inertia wheel (200) rotates relative to the cutting roller (100), and the rotation speed of the inertia wheel (200) is greater than that of the cutting roller (100). When the external force is removed, the inertia rotation force of the inertia wheel (200) is used as the driving source, and the cutting roller (100) is driven to rotate by the variable speed transmission structure. In this way, when the paper towel is wound around the outer periphery of the cutting roller (100) for paper discharge, the inertia rotation of the inertia wheel (200) can realize automatic paper discharge and transportation in the later stage, so that the paper towel is automatically extended; A counterweight (700) is eccentrically provided in the cutting roller (100); the counterweight (700), the speed-changing transmission structure, and the inertia wheel (200) are located on the same side of the cutting roller (100); the counterweight (700) is eccentrically and detachably installed in the cutting roller (100); when the resistance to paper discharge is large, the counterweight (700) is provided to drive the cutting roller (100) to continue rotating together with the inertia wheel (200).

2. The power-assisted paper towel conveying and cutting module according to claim 1, characterized in that: Side plates (130) are provided at both ends of the cutting roller (100), and the ends of the rotating shaft (110) are fixedly connected to the side plates (130). The cutting knife assembly (300) includes a blade (310) movably arranged in a knife groove (120), and a linkage structure is provided between the blade (310), the cutting roller (100) and the side plates (130). The linkage structure is used to simultaneously drive the blade (310) to reciprocate in and out of the knife groove (120) when the cutting roller (100) rotates.

3. The power-assisted paper towel conveying and cutting module according to claim 2, characterized in that: The linkage structure comprises a transmission block (320) fixed to the end of the blade (310) and a cam groove (330) provided on the side plate (130); the transmission block (320) is provided with a hinged end (321) hinged to the end of the cutting roller (100) and a sliding end (322) slidably engaged with the cam groove (330).

4. The power-assisted paper towel conveying and cutting module according to claim 2, characterized in that: The invention also includes a planetary gear set (400), wherein the planetary gear set (400) includes a sun gear (410) and planetary gears (420) located on one of the side plates (130), and an inner gear ring (430) located at the end of the cutting roller (100), and the sun gear (410) is meshed with the inner gear ring (430) for transmission.

5. The power-assisted paper towel conveying and cutting module according to claim 4, characterized in that: The sun gear (410) is connected to the shift gear (500) via a one-way bearing.

6. The power-assisted paper towel conveying and cutting module according to claim 1, characterized in that: The speed transmission structure is a speed transmission gearbox (600) fixed in the cutting roller (100), and two transmission ends of the speed transmission gearbox (600) are respectively connected to the rotating shaft (110) and the inertia wheel (200).

7. The power-assisted paper towel conveying and cutting module according to claim 1, characterized in that: The cutting roller (100) comprises two semi-cylindrical shells (140) connected to each other, at least two bearing seats (141) are provided in one of the semi-cylindrical shells (140), and the rotating shaft (110) is rotatably mounted on the bearing seats (141).

8. A paper towel dispenser, characterized in that: It adopts the power-assisted paper towel conveying and cutting module as described in any one of claims 1 to 7.

9. A paper towel dispenser, characterized in that: It comprises the power-assisted paper towel conveying and cutting module according to any one of claims 1 to 7, and further comprises a bottom shell (800) provided with a paper roll placement position (810) and a roller body installation position (820) on the front side, and a sleeve groove (821) is provided at both ends of the roller body installation position (820), and the cutting roller (100) is inserted into the sleeve groove (821) through a side plate (130) fixedly connected to the rotating shaft (110), a cover plate (830) is clamped on the front side of the paper roll placement position (810), and a guide roller (900) located on the outer peripheral side of the cutting roller (100) is clamped between the two side plates (130).

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