Damping device for disposable hygienic product core groove compression roller

Abstract

The invention relates to the field of damping equipment, in particular to a damping device for a disposable hygienic product core groove compression roller, which mainly has the functions of high response speed and broadband vibration suppression, and comprises a rack, a compression roller, two bearing seats, a damping mechanism and a dynamic tuning control system, the two axial ends of the pressing roller are arranged on the machine frame through bearing seats, the pressing roller comprises a roller shaft and a roller body arranged on the roller shaft in a sleeving mode, the roller body is provided with at least one pressing groove unit, the front end and the rear end of the pressing groove unit are provided with a front pressing strip and a rear pressing strip respectively, and the pressing groove unit is pressed through the front pressing strip and the rear pressing strip. Pressing grooves in the front area and the rear area of the core body respectively; the dynamic tuning control system comprises a controller, a display screen, an input panel, three-axis acceleration sensors arranged on bearing seats at the two axial ends of the pressing roller, and an electric control adjusting assembly.

Description

Technical Field

[0001] The present invention relates to the field of shock-absorbing devices, and particularly to a shock-absorbing device for a grooved roller of a disposable sanitary product core. Background Art

[0002] Chinese Patent Publication No. CN208031382U discloses a diaper cotton core net roller, which includes a roller and fixing plates. There are two groups of fixing plates, and a roller is arranged between the two side fixing plates. Rotating rods are arranged on both sides of the roller. One end of the rotating rod is fixedly connected to the middle of the side surface of the roller, and the other end of the rotating rod is movably connected to the inner side of the fixing plate. A scraper is arranged above the roller, and the lower side of the scraper is attached to the upper side of the roller. Fixed rings are arranged on both sides of the scraper, and a fixed rod is arranged between the arc-shaped rings. A horizontal torsion spring is arranged outside the fixed ring, and both ends of the torsion spring are fixedly connected to the inner side of the fixing plate and the outside of the fixed ring respectively. Both ends of the fixed rod pass through the fixed ring and are movably connected to the inner side of the fixing plate, and the inner wall of the fixed ring is fixedly connected to the outside of the fixed rod.

[0003] When the roller is working, high-frequency vibrations are easily generated due to high-speed rotation and intermittent pressing actions, resulting in uneven depths of the formed grooves and a decrease in the product qualification rate. Moreover, the rigid connection structure of the device is prone to resonance, accelerating the wear of components such as bearings. However, setting traditional spring shock absorbers on the roller has a slow response speed and insufficient damping, and cannot effectively suppress low-frequency vibrations. Summary of the Invention

[0004] Therefore, in view of the above problems, the present invention provides a shock-absorbing device for a grooved roller of a disposable sanitary product core with a fast response speed and wide-band vibration suppression.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A shock-absorbing device for a grooved roller of a disposable sanitary product core includes a frame, a roller, two bearing seats, a shock-absorbing mechanism, and a dynamic tuning control system. Axial ends of the roller are arranged on the frame through the bearing seats. The roller includes a roller shaft and a roller body sleeved on the roller shaft. At least one grooved pressing unit is provided on the roller body. A front pressing strip and a rear pressing strip are respectively arranged at the front end and the rear end of the grooved pressing unit. By pressing with the front pressing strip and the rear pressing strip, grooves are respectively pressed out in the front area and the rear area of the core. The shock absorption mechanism is arranged between the roller shaft and the roller body. The shock absorption mechanism includes at least two elastic shock absorption sleeves and a damping energy dissipation component distributed between two adjacent elastic shock absorption sleeves. An annular groove is recessed on the roller shaft and located between two adjacent elastic shock absorption sleeves. The damping energy dissipation component includes at least three damping energy dissipation units circumferentially distributed on the annular groove. The damping energy dissipation unit includes a mounting seat, a damping mechanism, and an arc-shaped support plate. The mounting seat is clamped in the annular groove. One end of the damping mechanism is hinged to the mounting seat, and the arc-shaped support plate is hinged to the other end of the damping mechanism. The outer side surface of the arc-shaped support plate abuts against the inner side surface of the roller body. The included angle between the central axis of the damping mechanism and the tangent line at the hinge joint of the damping mechanism and the mounting seat is 43°-47°; The dynamic tuning control system includes a controller, a display screen, an input panel, a triaxial acceleration sensor arranged on the bearing seats at both axial ends of the pressure roller, and an electric control adjustment component arranged on the damping mechanism. The display screen, the input panel, the triaxial acceleration sensor, and the electric control adjustment component are respectively electrically connected to the controller.

[0006] Further, the control method of the dynamic tuning control system includes the following steps: 1) Input variables: vibration acceleration deviation , number of grooves ; 2) Obtain the rotation speed of the pressure roller , and calculate the theoretical vibration fundamental frequency according to the rotation speed , and preset the reference opening of the damping mechanism. The oil flow rate of the damping mechanism and the frequency relationship is ; 3) Collect the sensor signals of the triaxial acceleration sensors arranged on the bearing seats at both axial ends of the pressure roller; 4) Eliminate high-frequency noise through a band-pass filter, then perform a fast discrete Fourier FFT transform to obtain a vibration spectrum, and extract the energy ratio of the main frequency band from 100 Hz to 800 Hz , and calculate the change in the energy ratio of the main frequency band ; 5) Adaptive tuning mode: When detecting low-frequency vibration less than 200 Hz and >0, adjust the oil flow rate of the damping mechanism = +30%; When detecting low-frequency vibration less than 200 Hz and ≈0, adjust the oil flow rate of the damping mechanism = +15%; When detecting high-frequency vibration greater than 500 Hz and >0, adjust the oil flow rate =-30%; When detecting low-frequency vibrations greater than 500 Hz and ≈0, adjust the oil passage flux of the damping mechanism =-15%; When it is within 10% near the resonance point >-10%, trigger frequency avoidance and adjust the rotational speed of the pressure roller The range is 3% to 5%.

[0007] Furthermore, the damping mechanism includes an outer cylinder, an inner cylinder, a piston rod assembly, a piston, a first end cap, a second end cap, a third end cap, a first spring, a second spring, a first connection seat, and a second connection seat. The first end cap and the second end cap are respectively disposed at the axial two ends of the outer cylinder. The first connection seat is disposed on the first end cap. The inner cylinder is disposed through the outer cylinder, and one end of the inner cylinder extends outward through the second end cap. The first spring is disposed between the inner end of the inner cylinder and the first end cap. The third end cap is disposed on the outer end of the inner cylinder. The piston rod assembly is disposed through the inner cylinder, and one end of the piston rod assembly extends outward through the third end cap. The piston is disposed at the inner end of the piston rod assembly. The piston, the inner cylinder, and the third end cap form a first chamber. The piston, the inner cylinder, the outer cylinder, the first end cap, and the second end cap form a second chamber. The oil passage flux between the first chamber and the second chamber is adjusted through the piston rod assembly. The second spring is disposed between the piston and the first end cap. The second connection seat is disposed on the outer end of the piston rod assembly. The electric control adjustment component is disposed on the second connection seat and is connected to the piston rod assembly.

[0008] Furthermore, the piston rod assembly includes a piston rod body. An installation hole and a flow channel are coaxially provided in the middle of the piston rod body. An adjusting rod is threadedly connected in the installation hole. One end of the adjusting rod extends into the flow channel. First connection holes and second connection holes communicated with the flow are respectively provided on both sides of the piston on the piston rod body.

[0009] Furthermore, a connection hole is provided on the inner cylinder below the piston. The distance between the central axis of the connection hole and the lower surface of the piston is 3 mm to 6 mm.

[0010] Furthermore, the electric control adjustment component includes a driving motor, a driving gear disposed on the output shaft of the driving motor, and a driven gear disposed on the outer end of the adjusting rod. The driving gear meshes with the driven gear.

[0011] Furthermore, the elastic shock-absorbing sleeve includes a metal support mesh sleeve having a honeycomb mesh structure, and elastic layers covering the inner side and the outer side of the metal support mesh sleeve. The honeycomb mesh holes are filled with silicone oil.

[0012] Further, the elastic layer comprises polyurethane rubber added with graphene particles, and the content of the graphene particles is 0.5-1.2 wt%.

[0013] Further, the curvature of the arc-shaped support plate is greater than that of the roller body.

[0014] By adopting the foregoing technical solutions, the beneficial effects of the present invention are as follows: for the damping device of the core groove pressing roller of the disposable sanitary product, the pressing roller rotates to roll press the core, so that grooves for guiding or storing feces are respectively pressed out in the front area and the rear area of the core. The vibration generated during the rotation of the pressing roller is buffered and energy-dissipated by the provided elastic damping sleeve and a plurality of damping mechanisms arranged circumferentially. Moreover, the dynamic tuning control system is provided to automatically optimize the damping parameters according to the load change, that is, the triaxial acceleration sensor monitors the vibration spectrum in real time, and then the oil circuit flux of the damping mechanism is dynamically adjusted through the electronic control adjustment component, so that the damping device has a fast response speed and realizes broadband vibration suppression, improving the qualification rate of the core groove pressing. At the same time, the setting that the included angle between the central axis of the damping mechanism and the tangent line at the hinge joint of the damping mechanism and the mounting seat is 43°-47° realizes multi-directional stress dispersion, improves the adjustment sensitivity and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the embodiment of the present invention; Figure 2 is the cross-sectional structural schematic diagram of the embodiment of the present invention with the damping energy-dissipating component omitted; Figure 3 is the cross-sectional structural schematic diagram of the embodiment of the present invention with the elastic damping sleeve omitted; Figure 4 is the structural schematic diagram of the damping mechanism in the embodiment of the present invention; Figure 5 is the cross-sectional structural schematic diagram of the damping mechanism in the embodiment of the present invention; Figure 6 is the cross-sectional structural schematic diagram of the piston rod assembly in the embodiment of the present invention; Figure 7 is Figure 6 the partial enlarged view at A in Figure 8 is the circuit module diagram of the embodiment of the present invention.

[0016] Description of the reference numerals: 1. Frame; 2. Pressing roller; 3. Bearing housing; 4. Shock-absorbing mechanism; 5. Dynamic tuning control system; 21. Roller shaft; 22. Roller body; 23. Grooving unit; 24. Front pressing strip; 25. Rear pressing strip; 26. Annular groove; 41. Elastic shock-absorbing sleeve; 42. Damping energy-consuming component; 51. Controller; 52. Display screen; 53. Input panel; 54. Triaxial acceleration sensor; 55. Electric control adjustment component; 56. Capacitive sensor; 411. Metal support mesh sleeve; 412. Elastic layer; 421. Mounting seat; 422. Damping mechanism; 423. Arc-shaped support plate; 551. Driving motor; 552. Driving gear; 553. Driven gear; 101. Outer cylinder; 102. Inner cylinder; 103. Piston rod assembly; 104. Piston; 105. First end cover; 106. Second end cover; 107. Third end cover; 108. First spring; 109. Second spring; 110. First connection seat; 111. Second connection seat; 112. First chamber; 113. Second chamber; 114. Limit block; 201. Piston rod body; 202. Mounting hole; 203. Flow channel; 204. Adjusting rod; 205. First connection hole; 206. Second connection hole; 207. Connection hole. Detailed implementation manners

[0017] The present invention will be further described in conjunction with the accompanying drawings and specific implementation manners.

[0018] An embodiment of the present invention is as follows: Refer to Figures 1 to 8 As shown, a shock-absorbing device for a core groove pressing roller of a disposable sanitary product includes a frame 1, a pressing roller 2, two bearing housings 3, a shock-absorbing mechanism 4, and a dynamic tuning control system 5. Axial ends of the pressing roller 2 are arranged on the frame 1 through the bearing housings 3. The pressing roller 2 includes a roller shaft 21 and a roller body 22 sleeved on the roller shaft 21. The roller body 22 has at least one grooving unit 23, preferably one. A front pressing strip 24 and a rear pressing strip 25 are respectively arranged at the front end and the rear end of the grooving unit 23. By pressing with the front pressing strip 24 and the rear pressing strip 25, grooves are respectively pressed out in the front area and the rear area of the core. The shock-absorbing mechanism 4 is disposed between the roller shaft 21 and the roller body 22. The shock-absorbing mechanism 4 includes three elastic shock-absorbing sleeves 41 and damping energy-consuming components 42 distributed between two adjacent elastic shock-absorbing sleeves 41. An annular groove 26 is recessed on the roller shaft 21 between two adjacent elastic shock-absorbing sleeves 41. The damping energy-consuming component 42 includes six damping energy-consuming units circumferentially distributed on the annular groove 26. The damping energy-consuming unit includes a mounting seat 421, a damping mechanism 422, and an arc-shaped support plate 423. The mounting seat 421 is clamped in the annular groove 26. One end of the damping mechanism 422 is hinged to the mounting seat 421. The arc-shaped support plate 423 is hinged to the other end of the damping mechanism 422. The outer side surface of the arc-shaped support plate 423 abuts against the inner side surface of the roller body 22. The included angle between the central axis of the damping mechanism 422 and the tangent line at the hinge joint of the damping mechanism 422 and the mounting seat 421 is 43° to 47°, preferably 45°; The dynamic tuning control system 5 includes a controller 51, a display screen 52, an input panel 53, a triaxial acceleration sensor 54 disposed on the bearing seats 3 at both axial ends of the pressure roller 2, and an electric control adjustment component 55 disposed on the damping mechanism 422. The display screen 52, the input panel 53, the triaxial acceleration sensor 54, and the electric control adjustment component 55 are electrically connected to the controller 51 respectively.

[0019] For the shock-absorbing device of the core groove of the disposable sanitary product, when the pressure roller 2 rotates to roll the core, grooves for guiding or storing feces are respectively pressed out in the front area and the rear area of the core. The vibration generated during the rotation of the pressure roller 2 is buffered and energy-consuming by the provided elastic shock-absorbing sleeves 41 and a plurality of circumferentially arranged damping mechanisms 422. Moreover, the dynamic tuning control system is provided to automatically optimize the damping parameters according to the load change, that is, the triaxial acceleration sensor monitors the vibration spectrum in real time, and then the electric control adjustment component dynamically adjusts the oil passage flux of the damping mechanism 422, so that the response speed of the shock-absorbing device is fast and wide-band vibration suppression is achieved, improving the qualification rate of the groove pressing of the core. At the same time, the setting that the included angle between the central axis of the damping mechanism 422 and the tangent line at the hinge joint of the damping mechanism 422 and the mounting seat 421 is 43° to 47° realizes multi-directional stress dispersion, improves the adjustment sensitivity and extends the service life of the equipment.

[0020] Specifically, the damping mechanism 422 includes an outer cylinder 101, an inner cylinder 102, a piston rod assembly 103, a piston 104, a first end cap 105, a second end cap 106, a third end cap 107, a first spring 108, a second spring 109, a first connecting seat 110 and a second connecting seat 111. The first end cap 105 and the second end cap 106 are respectively disposed at the axial two ends of the outer cylinder 101. The first connecting seat 110 is disposed on the first end cap 105. The inner cylinder 102 is disposed through the outer cylinder 101, and one end of the inner cylinder 102 extends outwards through the second end cap 106. The first spring 108 is disposed between the inner end of the inner cylinder 102 and the first end cap 105. The third end cap 107 is disposed on the outer end of the inner cylinder 102. The piston rod assembly 103 is disposed through the inner cylinder 102, and one end of the piston rod assembly 103 extends outwards through the third end cap 107. The piston 104 is disposed at the inner end of the piston rod assembly 103. The piston 104, the inner cylinder 102 and the third end cap 107 form a first chamber 112. The piston 104, the inner cylinder 102, the outer cylinder 101, the first end cap 105 and the second end cap 106 form a second chamber 113. The oil passage flux between the first chamber 112 and the second chamber 113 is adjusted through the piston rod assembly 103. The second spring 109 is disposed between the piston 104 and the first end cap 105. The second connecting seat 111 is disposed on the outer end of the piston rod assembly 103. The electric control adjustment component 55 is disposed on the second connecting seat 111 and is connected to the piston rod assembly 103. The outer end of the inner cylinder 102 is threadedly connected with a limiting block 114. By adjusting the limiting block 114, the movement stroke of the piston rod assembly 104 is adjusted; The piston rod assembly 103 includes a piston rod body 201. An installation hole 202 and a flow channel 203 are coaxially provided in the middle of the piston rod body 201. An adjusting rod 204 is threadedly connected in the installation hole 202. One end of the adjusting rod 204 extends into the flow channel 203. First connection holes 205 and second connection holes 206 communicating with the flow channel 203 are respectively provided on both sides of the piston 104 on the piston rod body 201. By rotating the adjusting rod 204, the adjusting rod 204 moves along the axial direction of the piston rod body 201, so as to adjust the flow path area of the flow channel 203, and further adjust the oil flow rate of the flow channel 203. During the compression process of the damping mechanism 422, when the vibration is small, the piston 104 compresses the second spring 109 and pushes the damping oil in the second chamber 113, so that the damping oil flows through the first connection hole 205, the second connection hole 206 and the flow channel 203 and enters the first chamber 112. When the vibration is large, the piston 104 continues to move towards each other, so that the inner cylinder 102 compresses the first spring 108, and the piston 104 continues to push the damping oil in the second chamber 113, so that the damping oil flows through the first connection hole 205, the second connection hole 206 and the flow channel 203 and enters the first chamber 112, realizing the energy consumption of vibration. Through the arrangement of the first spring 108 and the second spring 109, the damping mechanism 422 can realize the damping effect for large amplitudes and small amplitudes, improving the use effect.

[0021] Moreover, a connection hole 207 is provided on the inner cylinder 102 and below the piston 104. The distance between the central axis of the connection hole 207 and the lower surface of the piston 104 is 3 mm to 6 mm, preferably 5 mm, which can increase the flow area of the damping oil during the middle-stage damping of the damping mechanism 422, and further improve the response speed and damping effect for large amplitudes.

[0022] In this embodiment, the electric control adjustment assembly 55 includes a driving motor 551, a driving gear 552 provided on the output shaft of the driving motor 551, and a driven gear 553 provided on the outer end of the adjusting rod 204. The driving gear 552 meshes with the driven gear 553.

[0023] Moreover, the elastic damping sleeve 41 includes a metal support mesh sleeve 411 having a honeycomb mesh structure and elastic layers 412 covering the inner and outer sides of the metal support mesh sleeve 411. The honeycomb mesh is filled with silicone oil, and the silicone oil is a viscoelastic fluid, which can improve the support strength of the metal support mesh sleeve 411 and has a certain buffering performance, so as to connect the elastic layers 412, improving the damping effect and forming a "soft-hard" composite structure, taking into account high-frequency absorption and low-frequency attenuation. At the same time, the elastic layer 412 includes a polyurethane rubber added with graphene particles, and the content of the graphene particles is 0.5 to 1.2 wt%, preferably 0.8 wt%, improving the durability.

[0024] The curvature of the arc-shaped support plate 423 is greater than that of the roller body 22, so that the arc-shaped support plate 423 is in line contact with the roller body 22, facilitating the sliding of the arc-shaped support plate 423, thereby improving the adjustment accuracy.

[0025] In this embodiment, the control method of the dynamic tuning control system includes the following steps: 1) Input variables: vibration acceleration deviation , number of grooves ; 2) Obtain the rotational speed of the pressure roller 2 , and calculate the theoretical vibration fundamental frequency according to the rotational speed , and preset the reference opening of the damping mechanism 422, and the oil flow rate of the damping mechanism 422 The relationship with the frequency is ; 3) Collect the sensor signals of the three-axis acceleration sensors 54 on the bearing seats 3 at both axial ends of the pressure roller 2; 4) Eliminate high-frequency noise through a band-pass filter, then perform a fast discrete Fourier FFT transform to obtain the vibration spectrum, and extract the proportion of the main frequency band energy from 100 Hz to 800 Hz , and calculate the change in the proportion of the main frequency band energy ; 5) Adaptive tuning mode: When low-frequency vibration less than 200 Hz is detected and > 0, adjust the oil flow rate of the damping mechanism 422 = +30%; When low-frequency vibration less than 200 Hz is detected and ≈ 0, adjust the oil flow rate of the damping mechanism 422 = +15%; When high-frequency vibration greater than 500 Hz is detected and > 0, adjust the oil flow rate of the damping mechanism 422 = -30%; When high-frequency vibration greater than 500 Hz is detected and ≈ 0, adjust the oil flow rate of the damping mechanism 422 = -15%; When it is near the resonance point and 10% > > -10%, trigger frequency avoidance and adjust the rotational speed of the pressure roller 2 The range is 3% - 5%.

[0026] Moreover, by setting the capacitance sensor 56 to measure the load of the pressure roller 2, when the load mutation rate of the pressure roller 2 is greater than 20%, the oil passage flux of 50% of the damping mechanism 422 is closed and gradually restored to the normal value after 2 seconds.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0028] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0030] Although the present invention has been specifically shown and described with reference to the preferred embodiments, those skilled in the art should understand that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A shock absorbing device for a grooved roller of a disposable sanitary product core, characterized in that: It comprises a frame, a pressing roller, two bearing seats, a shock absorbing mechanism and a dynamic tuning control system. The axial ends of the pressing roller are arranged on the frame through the bearing seats. The pressing roller comprises a roller shaft and a roller body sleeved on the roller shaft. The roller body has at least one groove pressing unit. The front and rear ends of the groove pressing unit are respectively provided with a front pressure strip and a rear pressure strip. The front and rear pressure strips are pressed to press grooves in the front and rear areas of the core respectively. The shock absorbing mechanism is arranged between the roller shaft and the roller body, the shock absorbing mechanism includes at least two elastic shock absorbing sleeves and a damping energy absorbing component distributed between the two connected elastic shock absorbing sleeves, an annular groove is concavely arranged on the roller shaft and located between the two connected elastic shock absorbing sleeves, the damping energy absorbing component includes at least three damping energy absorbing units circumferentially uniformly distributed on the annular groove, the damping energy absorbing unit includes a mounting seat, a damping mechanism and an arc-shaped support plate, the mounting seat is clamped in the annular groove, one end of the damping mechanism is hinged on the mounting seat, the arc-shaped support plate is hinged on the other end of the damping mechanism, the outer side surface of the arc-shaped support plate is against the inner side surface of the roller body, and the angle between the central axis of the damping mechanism and the tangent of the hinge between the damping mechanism and the mounting seat is 43° to 47°; The dynamic tuning control system includes a controller, a display screen, an input panel, a three-axis acceleration sensor arranged on the bearing seats at both ends of the pressure roller axial direction, and an electric control adjustment component arranged on the damping mechanism. The display screen, input panel, three-axis acceleration sensor and electric control adjustment component are electrically connected to the controller respectively.

2. The shock absorbing device for the groove pressing roller of the disposable sanitary product core according to claim 1, characterized in that: The dynamic tuning control system control method comprises the following steps: 1) Input variable: vibration acceleration deviation , number of grooves ; 2) Get the speed of the pressure roller , and calculate the theoretical vibration fundamental frequency according to the speed , and preset the reference opening of the damping mechanism, the oil flow of the damping mechanism The relationship with frequency is ; 3) Collecting sensor signals of the three-axis acceleration sensors on the bearing seats at both ends of the roller axis; 4) Eliminate high-frequency noise through a bandpass filter, then perform a fast Fourier transform (FFT) to obtain the vibration spectrum and extract the energy proportion of the main frequency band from 100Hz to 800Hz , and calculate the change in frequency band energy ratio ; 5) Adaptive tuning mode: When low-frequency vibration less than 200 Hz is detected and >0, adjust the oil flow of the damping mechanism =+30%; When low-frequency vibration less than 200 Hz is detected and ≈0, adjust the oil flow of the damping mechanism =+15%; When low-frequency vibration greater than 500 Hz is detected and >0, adjust the oil flow of the damping mechanism =-30%; When low-frequency vibration greater than 500 Hz is detected and ≈0, adjust the oil flow of the damping mechanism =-15%; When it is near the resonance point 10%> >-10% triggers frequency avoidance and adjusts the speed of the pressure roller The range is 3% to 5%.

3. The shock absorbing device for the groove pressing roller of the disposable sanitary product core according to claim 1 or 2, characterized in that: The damping mechanism comprises an outer cylinder, an inner cylinder, a piston rod assembly, a piston, a first end cover, a second end cover, a third end cover, a first spring, a second spring, a first connecting seat and a second connecting seat, wherein the first end cover and the second end cover are respectively covered at the axial ends of the outer cylinder, the first connecting seat is arranged on the first end cover, the inner cylinder is passed through the outer cylinder, and one end of the inner cylinder passes through the second end cover and extends outward, the first spring is arranged between the inner end of the inner cylinder and the first end cover, the third end cover is covered at the outer end of the inner cylinder, and the piston rod assembly is passed through The piston is arranged at the inner end of the piston rod assembly, and one end of the piston rod assembly passes through the third end cover and extends outward. The piston is arranged at the inner end of the piston rod assembly. The piston, the inner cylinder and the third end cover form a first chamber. The piston, the inner cylinder, the outer cylinder, the first end cover and the second end cover form a second chamber. The oil flux between the first chamber and the second chamber is adjusted by the piston rod assembly. The second spring is arranged between the piston and the first end cover. The second connecting seat is arranged at the outer end of the piston rod assembly. The electric control adjustment assembly is arranged on the second connecting seat and is connected to the piston rod assembly.

4. The shock absorbing device for the groove pressing roller of the disposable sanitary product core according to claim 3, characterized in that: The piston rod assembly includes a piston rod body, a mounting hole and a flow channel are coaxially arranged in the middle of the piston rod body, an adjusting rod is threadedly connected to the mounting hole, one end of the adjusting rod extends into the flow channel, and a first connecting hole and a second connecting hole connected to the flow are respectively arranged on the piston rod body and located on both sides of the piston.

5. The shock absorbing device for the groove pressing roller of the disposable sanitary product core according to claim 4, characterized in that: A connecting hole is provided on the inner cylinder and located at the lower side of the piston, and the distance between the central axis of the connecting hole and the lower surface of the piston is 3mm to 6mm.

6. The shock absorbing device for the groove pressing roller of the disposable sanitary product core according to claim 5, characterized in that: The electric control adjustment component comprises a driving motor, a driving gear arranged on the output shaft of the driving motor and a driven gear arranged on the outer end of the adjustment rod, and the driving gear is meshed with the driven gear.

7. The shock absorbing device for the groove pressing roller of the disposable sanitary product core according to claim 1, characterized in that: The elastic shock-absorbing sleeve comprises a metal supporting mesh sleeve with a honeycomb mesh structure and an elastic layer covering the inner side and the outer side of the metal supporting mesh sleeve, and the honeycomb mesh is filled with silicone oil.

8. The shock absorbing device for the groove pressing roller of the disposable sanitary product core according to claim 7, characterized in that: The elastic layer includes polyurethane rubber added with graphene particles, and the content of the graphene particles is 0.5 to 1.2 wt %.

9. The shock absorbing device for the groove pressing roller of the disposable sanitary product core according to claim 1, characterized in that: The curvature of the arc-shaped support plate is greater than the curvature of the roller body.

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