A kind of automatic paper-rolling machine core structure

Abstract

The present invention discloses a core structure of an automatic paper-roll dispensing machine in the technical field of pedal assembly machines, comprising a conveying component, the conveying component comprising a main frame, a side plate frame being installed on one side of the main frame, the inner cavity of the frame assembly being divided into upper, middle and lower layers by two ridges arranged on the inner wall of the main frame, the upper layer and the lower layer of the inner cavity of the frame assembly being both provided with conveying mechanisms of the same structure; a driving component, the driving component comprising a driving motor, the output end of the driving motor driving two groups of conveying mechanisms through sequentially meshed gear sets, the front side of the driving motor being provided with a paper length counter; a cutting component, the cutting component comprising an upper box cover, a lower box cover, a stationary blade, a cutting sensor and a cutting motor, the cutting motor being connected with a push-pull plate and a moving blade through a push-pull transmission mechanism, the present invention provides a core structure of an automatic paper-roll dispensing machine, which can realize automatic paper discharging of a specified length of a paper roll, and has the advantages of saving paper and convenient paper discharging.

Description

Technical Field

[0001] The invention relates to the technical field of an automatic paper roll dispensing machine, and in particular to a core structure of an automatic paper roll dispensing machine. Background Art

[0002] According to current market surveys, more and more IoT manufacturers are developing automatic scanning and paper dispensing equipment. These devices can be seen in railway stations, airports, large shopping malls, scenic spots, etc. They are installed at the entrance of toilets in various fields, which is convenient for the general public. However, according to surveys, these devices basically scan a package of paper towels. Since the equipment is filled with packages of paper, it takes up a lot of space, and the number of paper towels that can be stored at one time is small. The operation and maintenance personnel have to replace the paper towels every now and then, and the maintenance cost is extremely high. Therefore, based on the market research and feedback from maintenance personnel, our company made an assumption, whether it is possible to change the packages of paper to paper towels that are dispensed in sections at a time. This way, the maintenance cost is low and it is environmentally friendly. Therefore, our company decided to make some contributions to this field and improve the existing paper dispensing mode.

[0003] Improvements are made on the basis of the current industry, with a lower cost and more environmentally friendly paper use concept. First of all, we envision that each paper output is 60CM, which can basically meet the needs of the majority of people, and the paper output length can be automatically adjusted, such as 80CM, 100CM, etc., which is more flexible. The original paper towel machine can hold up to 50 packs of paper, resulting in many machines being empty and many people who need paper cannot get it. At present, the toilet paper for free trial in the toilet is basically a roll of about 200 meters. If it is this length, then a roll of paper loaded on the equipment can be used 200-300 times, which is more cost-effective and more convenient.

[0004] Based on this, an automatic paper roll dispensing machine core structure is invented and designed to solve the above problems. Summary of the invention

[0005] The purpose of the invention is to provide a core structure of an automatic paper roll dispensing machine to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the invention provides the following technical solutions: a core structure of an automatic paper-rolling machine, comprising a conveying component, wherein the conveying component comprises a main frame, a side plate frame is installed on one side of the main frame, the main frame and the side plate frame are enclosed to form a frame assembly that passes through from top to bottom, the inner cavity of the frame assembly is divided into three layers: upper, middle and lower by two ridges arranged on the inner wall of the main frame, and the upper and lower layers of the inner cavity of the frame assembly are both provided with a conveying mechanism with the same structure;

[0007] A driving component, the driving component includes a driving motor, the output end of the driving motor drives the two sets of the conveying mechanisms through sequentially meshed gear sets, and a paper length counter is arranged on the front side of the driving motor;

[0008] A cutting component, the cutting component includes an upper box cover and a lower box cover, the left sides of the upper box cover and the lower box cover extend into the middle layer of the inner cavity of the frame assembly, a cutting motor is arranged on the right side between the upper box cover and the lower box cover, the cutting motor is connected to a push-pull plate through a push-pull transmission mechanism, a moving blade is installed on the push-pull plate, a stationary blade is fixedly installed on the left side between the upper box cover and the lower box cover, and a cutting sensor is installed at the bottom of the push-pull transmission mechanism.

[0009] Preferably, the conveying mechanism includes a conveying cover plate, a cover plate groove is provided in the middle portion of the conveying cover plate, and the inner cavity of the conveying cover plate is symmetrically provided with conveying roller shafts on both sides of the cover plate groove, and the two ends of the two conveying roller shafts are clamped and fixed on both sides of the inner cavity of the conveying cover plate through roller shaft fixing plates, and the outer wall of the conveying roller shaft is sleeved with a plurality of winding rings in an axially equidistant array state, and the outer walls of the winding rings on both sides correspond to each other, and anti-winding sharp teeth are provided at the corresponding winding rings on both sides of the cover plate groove, and a fixed shaft hole and a waist-round shaft hole are provided on the roller shaft fixing plate, and the ends of the two conveying roller shafts are respectively installed in the fixed shaft hole and the waist-round shaft hole, and a curved retaining spring is provided on the outer side of the roller shaft fixing plate, one end of the curved retaining spring is clamped and fixed to the inner end of the conveying cover plate, and the other end abuts against the retaining spring groove of the end of the conveying roller shaft.

[0010] Preferably, the main frame and the side panel frame are provided with a beam sensor on the left and right sides of the bottom. Preferably, the drive motor is fixedly mounted on the outer wall of the main frame through a motor mounting seat, the output end of the drive motor is sleeved with a driving gear, one side of the driving gear is connected to a transfer gear, the upper and lower oblique sides of the transfer gear are simultaneously meshed with passive gears, and the two passive gears are respectively installed and connected with the two groups of the conveying mechanisms.

[0011] Preferably, the paper length counter comprises a counting gear and a counting sensor, the counting gear is meshed between the driving gear and the transfer gear, a counting plate is arranged on the outer side of the counting gear, and counting teeth are evenly arranged on the circumference of the counting plate.

[0012] Preferably, a paper inlet and a paper outlet are respectively provided on the left side of the upper box cover and the lower box cover, and the push-pull transmission mechanism is sleeved on a worm at the output end of the cutting motor, a worm wheel is meshedly provided on one side of the worm wheel, and the worm wheel is fixedly installed in the inner cavity of the lower box cover through a rotating shaft, and a pin sleeve is eccentrically provided on the top of the worm wheel, and the pin sleeve is located in a slide groove provided on the right side of the push-pull plate, and both sides of the bottom surface of the push-pull plate abut against the support folded edges that are upright and folded upward on both sides of the lower box cover.

[0013] Preferably, the cut-off sensor comprises a sensor body fixedly arranged at the bottom of the inner cavity of the lower box cover and a reflective sheet attached to the bottom surface of the worm gear.

[0014] Preferably, both sides of the moving blade are mounted on the push-pull plate by screws, the screws penetrate the push-pull plate from bottom to top and are screwed to the moving blade, there is a floating gap between the bottom surface of the moving blade and the top surface of the push-pull plate, and a plurality of floating compression springs are spaced apart in the floating gap.

[0015] Preferably, the movable blade abuts against the bottom surface of the stationary blade, the stationary blade is fixedly mounted on the left side wall of the inner cavity of the upper box cover, and the sharp edge of the movable blade is inclined at a certain angle.

[0016] Compared with the prior art, the invention has the following beneficial effects:

[0017] The core structure of the automatic paper roll dispensing machine of the present invention mainly includes a conveying component, a driving component and a cutting component. The conveying component includes two sets of upper and lower feed roller shaft type conveying mechanisms, which are respectively used for paper feeding drive and paper discharging drive. The driving component is connected to one end of the conveying mechanism through a gear set structure to realize automatic paper roll extraction. One side of the cutting component with a moving blade and a stationary blade extends into the inner cavity of the conveying component, and the moving blade is indirectly driven by a cutting motor to push and pull and cooperate with the stationary blade to automatically cut the paper roll. In summary, the present invention provides a core structure of the automatic paper roll dispensing machine, which can realize automatic paper discharging of a specified length of paper roll, and has the advantages of saving paper and convenient paper discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the conveying component of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the conveying mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the driving component of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the cutting component of the present invention;

[0024] Figure 6 It is a schematic diagram of the push-pull transmission mechanism structure of the present invention.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 100-transporting component, 200-driving component, 300-cutting component;

[0027] 110-main frame, 120-side plate frame, 130-ridge, 140-transmission mechanism, 150-reflection sensor;

[0028] 141-conveying cover plate, 142-cover plate groove, 143-conveying roller shaft, 144-roller shaft fixing plate, 145-rolling ring, 146-waisted round shaft hole, 147-curved retaining spring;

[0029] 210-driving motor, 220-paper length counter;

[0030] 211-motor mounting seat, 212-driving gear, 213-transfer gear, 214-passive gear;

[0031] 221- counting gear, 222- counting sensor, 223- counting board;

[0032] 310-upper box cover, 320-lower box cover, 330-cutting motor, 340-push-pull transmission mechanism, 350-push-pull plate, 360-moving blade, 370-stationary blade, 380-cutting sensor, 390-screw, 3100-floating compression spring;

[0033] 311-paper inlet;

[0034] 321-paper outlet, 322-support folding edge,

[0035] 341-worm, 342-worm wheel, 341-pin bushing;

[0036] 351-chute. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0038] See also Figure 1-6The invention provides a technical solution: a core structure of an automatic paper roll dispensing machine, including a conveying component 100, the conveying component 100 includes a main frame 110, a side plate frame 120 is installed on one side of the main frame 110, the main frame 110 and the side plate frame 120 are enclosed to form a frame assembly that passes through from top to bottom, the inner cavity of the frame assembly is divided into three layers of upper, middle and lower layers by two ridges 130 arranged on the inner wall of the main frame 110, and the upper and lower layers of the inner cavity of the frame assembly are both provided with a conveying mechanism 140 with the same structure;

[0039] The driving component 200 includes a driving motor 210. The output end of the driving motor 210 drives two sets of conveying mechanisms 140 through sequentially meshed gear sets. A paper length counter 220 is provided at the front side of the driving motor 210.

[0040] The cutting component 300 includes an upper box cover 310 and a lower box cover 320. The left sides of the upper box cover 310 and the lower box cover 320 extend into the middle layer of the inner cavity of the frame assembly. A cutting motor 330 is arranged on the right side between the upper box cover 310 and the lower box cover 320. The cutting motor 330 is connected to a push-pull plate 350 through a push-pull transmission mechanism 340. A moving blade 360 ​​is installed on the push-pull plate 350. A stationary blade 370 is fixedly installed on the left side between the upper box cover 310 and the lower box cover 320. A cutting sensor 380 is installed at the bottom of the push-pull transmission mechanism 340. Embodiment 1:

[0041] Please see Figure 2-3 The conveying mechanism 140 includes a conveying cover plate 141, a cover plate groove 142 is opened in the middle of the conveying cover plate 141, and a conveying roller shaft 143 is symmetrically arranged on both sides of the inner cavity of the conveying cover plate 141. The width of the cover plate groove 142 is slightly wider than the spacing between the two conveying roller shafts 143. The two ends of the two conveying roller shafts 143 are clamped and fixed on both sides of the inner cavity of the conveying cover plate 141 through the shaft fixing plates 144. The outer wall of the conveying roller shaft 143 is sleeved with a plurality of winding rings 145 in an axially equidistant array distribution state. The outer wall of the conveying roller shaft 143 is provided with an annular protrusion for sleeved with the winding ring 145. The middle part of the annular protrusion is provided with an annular groove with the same width as the winding ring 145. The winding ring 145 is clamped in the annular groove to achieve axial fixation. The outer walls of the winding rings 145 on both sides are abutted one by one. The winding ring 145 can be made of materials such as rubber silicone, which has good friction and is convenient for dragging paper towels.

[0042] The paper towel enters from the top of the frame assembly and is discharged from the bottom. The paper is brought to the paper outlet through the friction between the winding rings 145 on the conveying roller shafts 143 on both sides and the paper towel. Since the paper towel is soft, the paper scraps generated by the paper towel will generate electrostatic adsorption with the winding rings 145, and the paper is easily rolled into the side gap of the conveying roller shaft 143. Therefore, anti-rolling sharp teeth 148 are provided at the corresponding winding rings 145 on both sides of the cover groove 142. When the paper towel is about to be rolled in, the anti-rolling sharp teeth 148 will scrape the paper into pieces, and the paper scraps will fall out from under the shaft to prevent the whole paper from rolling in. In addition, a layer of antistatic agent can also be processed on the outer wall of the winding ring 145 to suppress the generation of static electricity, thereby improving the adsorption phenomenon.

[0043] Since toilet paper is very soft and light, it is difficult for it to fall out by its own gravity, so the paper outlet also adopts a shaft transmission to drive the paper towel to fall. The structure is the same as the paper feed shaft method. Anti-roll sharp teeth 148 are used as an anti-paper jam structure, and a beam sensor 150 is installed on the left and right sides of the bottom of the main frame 110 and the side panel frame 120 to detect whether the paper has come out, which is convenient for remotely notifying on-site personnel and notifying faults, which is more humane and intelligent.

[0044] A fixed shaft hole and a waisted shaft hole 146 are provided on the shaft fixing plate 144, and the ends of the two conveying shafts 143 are respectively installed in the fixed shaft hole and the waisted shaft hole 146. A curved retaining spring 147 is provided on the outer side of the shaft fixing plate 144. One end of the curved retaining spring 147 is clamped and fixed on the inner end of the conveying cover plate 141, and the other end abuts against the retaining spring groove at the end of the conveying shaft 143. The curved retaining spring 147 is located on the outer side of the conveying shaft 143. A certain elastic thrust is generated by the abutment of the curved retaining spring 147, so that the conveying shaft 143 installed in the waisted shaft hole 146 abuts against the other conveying shaft 143, ensuring that the outer walls of the winding rings 145 on both sides are fully in contact, thereby generating a stable friction force to smoothly pump paper towels. Embodiment 2:

[0045] Please see Figure 4The driving motor 210 is fixedly mounted on the outer wall of the main frame 110 through a motor mounting seat 211, and a driving gear 212 is sleeved on the output end of the driving motor 210. A transfer gear 213 is transmission-connected to one side of the driving gear 212. The transfer gear 213 is fixedly mounted on the outer wall of the main frame 110 through a gear shaft, and a passive gear 214 is meshed at the upper and lower oblique sides of the transfer gear 213. The two passive gears 214 are respectively installed and connected with the two groups of conveying mechanisms 140; when the driving motor 210 is turned on, the driving gear 212 indirectly drives the transfer gear 213 to rotate, and the transfer gear 213 drives the two passive gears 214 to rotate in the direction, and the two passive gears 214 are respectively sleeved with the conveying roller shafts 143 installed in the fixed shaft holes in the two groups of conveying mechanisms 140, so that the upper two groups of conveying roller shafts 143 draw the paper towels into the inner cavity of the frame component from the top, and the lower two groups of conveying roller shafts 143 draw the paper towels out of the inner cavity of the frame component from the bottom.

[0046] The paper length counter 220 includes a counting gear 221 and a counting sensor 222. The counting gear 221 is meshed between the driving gear 212 and the transfer gear 213. A counting plate 223 is provided on the outer side of the counting gear 221. Counting teeth are evenly provided on the circumference of the counting plate 223. The counting plate 223 and the counting gear 221 are a coaxially overlapped integral structure. When the driving motor 210 turns on the counting plate 223 and the counting gear 221 rotate accordingly, the counting sensor 222 is set on one side of the counting plate 223. The rotation speed is determined by detecting the frequency of the counting tooth occlusion, and the length of the paper towel drawn is calculated in combination with the extraction time. Embodiment 3:

[0047] Please see Figure 5-6 , the left sides of the upper box cover 310 and the lower box cover 320 are respectively provided with a paper inlet 311 and a paper outlet 321, the push-pull transmission mechanism 340 is sleeved on the worm 341 at the output end of the cutting motor 330, and a worm gear 342 is meshed on one side of the worm 341, and the worm gear 342 is fixedly installed in the inner cavity of the lower box cover 320 through a rotating shaft, and a pin sleeve 343 is eccentrically provided on the top of the worm gear 342, and the pin sleeve 343 is located in a slide groove 351 provided on the right side of the push-pull plate 350, and the shaft sleeve design method is adopted, which currently reduces friction, makes the structure life longer, and the transmission is smoother, and the bottom sides of the push-pull plate 350 are in contact with the support folded edges 322 that are folded upward vertically on both sides of the lower box cover 320, so as to support the push-pull plate 350 at a specified height;

[0048] The cut-off sensor 380 includes a sensor body fixedly arranged at the bottom of the inner cavity of the lower box cover 320 and a reflective sheet attached to the bottom surface of the worm gear 342. The bottom surface of the worm gear 342 is biasedly embedded or adhered with a reflective sheet. The sensor body determines the rotation period of the worm gear 342 by the reflected detection light, thereby accurately controlling the push-pull movement of the push-pull plate 350.

[0049] Both sides of the movable blade 360 ​​are mounted on the push-pull plate 350 by screws 390. The screws 390 penetrate the push-pull plate 350 from bottom to top and are screwed to the movable blade 360. There is a floating gap between the bottom surface of the movable blade 360 ​​and the top surface of the push-pull plate 350. A plurality of floating compression springs 3100 are abutted at intervals in the floating gap. Under the lifting action of the floating compression springs 3100, the movable blade 360 ​​has a tendency to lift upward. The movable blade 360 ​​abuts against the bottom surface of the stationary blade 370. The stationary blade 370 is fixedly mounted on the left side wall of the inner cavity of the upper box cover 310. The sharp edge of the movable blade 360 ​​is inclined at a certain angle. Therefore, the movable blade 360 ​​and the stationary blade 370 form a positional relationship similar to that of scissors, which is convenient for quickly cutting paper towels.

[0050] In the description of the invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention. In the invention, unless otherwise clearly specified and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to the specific circumstances.

[0051] Although embodiments of the invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A core structure of an automatic paper roll dispensing machine, characterized in that: include A conveying component (100), the conveying component (100) comprising a main frame (110), a side plate frame (120) being installed on one side of the main frame (110), the main frame (110) and the side plate frame (120) forming a frame assembly that is connected from top to bottom, the inner cavity of the frame assembly being divided into three layers: upper, middle and lower layers by two ridges (130) arranged on the inner wall of the main frame (110), and the upper and lower layers of the inner cavity of the frame assembly are both provided with a conveying mechanism (140) having the same structure; A driving component (200), the driving component (200) comprising a driving motor (210), the output end of the driving motor (210) driving the two sets of conveying mechanisms (140) through sequentially meshed gear sets, and a paper length counter (220) is arranged on the front side of the driving motor (210); A cutting component (300), the cutting component (300) comprising an upper box cover (310) and a lower box cover (320), the left sides of the upper box cover (310) and the lower box cover (320) extending into the middle layer of the inner cavity of the frame assembly, a cutting motor (330) being arranged on the right side between the upper box cover (310) and the lower box cover (320), the cutting motor (330) being connected to a push-pull plate (350) via a push-pull transmission mechanism (340), a moving blade (360) being mounted on the push-pull plate (350), a stationary blade (370) being fixedly mounted on the left side between the upper box cover (310) and the lower box cover (320), and a cutting sensor (380) being mounted on the bottom of the push-pull transmission mechanism (340); The conveying mechanism (140) comprises a conveying cover plate (141), a cover plate groove (142) is provided in the middle of the conveying cover plate (141), and conveying roller shafts (143) are symmetrically arranged on both sides of the inner cavity of the conveying cover plate (141), and the two ends of the two conveying roller shafts (143) are clamped and fixed on both sides of the inner cavity of the conveying cover plate (141) through roller shaft fixing plates (144), and the outer wall of the conveying roller shaft (143) is sleeved with a plurality of winding rings (145) in an axially equidistant array distribution state, and the outer walls of the winding rings (145) on both sides are one by one. Correspondingly abutting, anti-rolling sharp teeth (148) are arranged at the corresponding winding rings (145) on both sides of the cover plate groove (142), a fixed shaft hole and a waisted shaft hole (146) are opened on the stick shaft fixing plate (144), and the ends of the two conveying stick shafts (143) are respectively installed in the fixed shaft hole and the waisted shaft hole (146), and a curved retaining spring (147) is arranged on the outer side of the stick shaft fixing plate (144), one end of the curved retaining spring (147) is clamped and fixed on the inner end of the conveying cover plate (141), and the other end abuts against the retaining spring groove at the end of the conveying stick shaft (143); Opposing sensors (150) are installed on the left and right sides of the bottom of the main frame (110) and the side panel frame (120).

2. The core structure of the automatic paper roll dispensing machine according to claim 1, characterized in that: The driving motor (210) is fixedly mounted on the outer wall of the main frame (110) via a motor mounting seat (211); a driving gear (212) is sleeved on the output end of the driving motor (210); a transfer gear (213) is transmission-connected to one side of the driving gear (212); upper and lower oblique sides of the transfer gear (213) are simultaneously meshed with passive gears (214); and the two passive gears (214) are respectively mounted and connected to the two groups of the conveying mechanisms (140).

3. The core structure of the automatic paper roll dispensing machine according to claim 2, characterized in that: The paper length counter (220) comprises a counting gear (221) and a counting sensor (222); the counting gear (221) is meshedly arranged between the driving gear (212) and the transfer gear (213); a counting plate (223) is arranged on the outer side surface of the counting gear (221); and counting teeth are evenly arranged on the circumference of the counting plate (223).

4. The core structure of the automatic paper roll dispensing machine according to claim 1, characterized in that: The left sides of the upper box cover (310) and the lower box cover (320) are respectively provided with a paper inlet (311) and a paper outlet (321); the push-pull transmission mechanism (340) is sleeved on a worm (341) at the output end of the cutting motor (330); a worm wheel (342) is meshedly provided on one side of the worm (341); the worm wheel (342) is fixedly installed in the inner cavity of the lower box cover (320) through a rotating shaft; a pin sleeve (343) is eccentrically provided on the top of the worm wheel (342); the pin sleeve (343) is located in a slide groove (351) provided on the right side of the push-pull plate (350); and the bottom surfaces of the push-pull plate (350) are in contact with the support folded edges (322) on both sides of the lower box cover (320) that are vertically folded upward.

5. The core structure of the automatic paper roll dispensing machine according to claim 4, characterized in that: The cut-off sensor (380) comprises a sensor body fixedly arranged at the bottom of the inner cavity of the lower box cover (320) and a reflective sheet attached to the bottom surface of the worm wheel (342).

6. The core structure of the automatic paper roll dispensing machine according to claim 4, characterized in that: Both sides of the movable blade (360) are mounted on the push-pull plate (350) by means of screws (390), and the screws (390) penetrate the push-pull plate (350) from bottom to top and are screwed to the movable blade (360), and a floating gap is provided between the bottom surface of the movable blade (360) and the top surface of the push-pull plate (350), and a plurality of floating compression springs (3100) are spaced apart and abutted against each other in the floating gap.

7. The core structure of the automatic paper roll dispensing machine according to claim 6, characterized in that: The movable blade (360) abuts against the bottom surface of the stationary blade (370); the stationary blade (370) is fixedly mounted on the left side wall of the inner cavity of the upper box cover (310); and the sharp edge of the movable blade (360) is inclined at a certain angle.

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