Spindle damping device for textile machines

Abstract

This application discloses a vibration damping device for spinning drums in textile machinery, relating to the field of vibration damping technology in spinning machinery. The device includes a rod sleeve, lubricating oil, a threaded rod, a threaded rod buffer tube, a vibration damping spring assembly, and an oil lifting assembly. The vibration damping spring assembly adopts a variable pitch hollow spring body structure with a denser upper section and a sparser lower section. It has multiple oil control sections evenly arranged along the spiral direction of the variable pitch spring body. Each oil control section has an oil inlet hole and a movable membrane fixed outside the oil inlet hole. The movable membrane uses magnetic attraction to open and close the oil inlet hole and adjust the actual opening area of ​​the oil inlet hole during rebound, achieving real-time adaptive control of the oil flow. This enables improved response speed for adaptive oil flow control, enhanced vibration damping consistency due to temperature adaptation, strengthened damping effect for unidirectional flow, effective suppression of simple harmonic motion to improve equipment stability, and optimized cooling efficiency to extend service life.

Description

Technical Field

[0001] This invention relates to the field of vibration damping technology for spinning machinery, and more particularly to a vibration damping device for spinning rollers in textile machinery. Background Technology

[0002] In textile machinery, the spinning roller is a core transmission and processing component, responsible for key processes such as yarn drafting, twisting, and winding. However, due to factors such as high-speed operation, load changes, and machining errors, the roller is prone to vibration. If not effectively controlled, it will seriously affect production quality and equipment life.

[0003] Regarding shock absorption and cushioning in textile machinery, Chinese invention patent CN201811220133.4 discloses a cushioning device for textile machinery. This patent mainly achieves corresponding cushioning by setting multiple springs, cushioning rods, and cushioning cylinders. Based on the technical solution of the above patent, Chinese invention patent CN202110890760.4 discloses a shock absorption device for spinning drums in textile machinery. This patent uses a spiral blade spiraling upwards, so that when the threaded rod is pressed down, the spiral blade rotates in the opposite direction, lifting the lubricating oil deposited at the bottom and spraying it onto the surface of the hollow shock-absorbing spring, actively cooling the heated spring. When the cushioning rod is pressed down, the hollow spring is compressed by external force, and the internal lubricating oil is sprayed out through a one-way oil valve, playing a role in cushioning and cooling. When the spring rebounds, the one-way rotating ball is driven by external oil to rotate and draw in oil, avoiding disordered oil flow, significantly reducing the harmonic motion effect and frictional heat generation of the spring, and achieving stable shock absorption of the spinning drum.

[0004] While the above-mentioned solutions improve operational efficiency to some extent when treating the spinning rollers for vibration damping, in actual use, the commonly used constant pitch damping springs have a constant stiffness, resulting in a linear response to compression and rebound. Regardless of the impact force, the concentrated release of energy easily causes reciprocating oscillations, which are insufficient for buffering large impacts or react too harshly to small vibrations. Furthermore, since the hollow spring is compressed by external force and the oil is sprayed out through a one-way oil valve, it mainly relies on the slow return of the oil during rebound. This may result in insufficient response at high-speed spinning, inertial delay, inability to adapt to high-frequency vibrations in real time, and the risk of resonance. This leads to untimely oil absorption and release and inability to counteract high-frequency harmonic motion, which instead exacerbates the shaking and reduces the damping effect. In addition, considering that the viscosity of the lubricating oil changes with temperature at high speeds, it flows slowly at low temperatures, resulting in stiff damping, and the oil is thin at high temperatures, resulting in insufficient buffering and affecting the consistency of performance. Summary of the Invention

[0005] This application provides a vibration damping device for spinning drums in textile machinery, which solves the technical problems in the prior art such as delayed oil flow response, inability to adapt to high-frequency vibration in real time, inconsistent damping performance due to temperature changes, insufficient damping force due to bidirectional oil flow tendency, incomplete suppression of simple harmonic motion which easily aggravates shaking, and insufficient cooling effect affecting spring life. It achieves the technical effects of improved oil flow adaptive control response speed, improved temperature adaptive performance and vibration damping consistency, enhanced damping effect of unidirectional flow, effective suppression of simple harmonic motion to improve equipment stability, and optimized cooling efficiency to extend service life.

[0006] This application provides a vibration damping device for spinning drums in textile machinery, including a rod sleeve, lubricating oil, a pressing plate, a top plate, a threaded rod, a threaded rod buffer tube, a vibration damping spring assembly, and an oil lifting assembly;

[0007] The shock-absorbing spring assembly adopts a variable pitch hollow spring body structure with a denser upper section and a sparser lower section. It has multiple oil control sections evenly arranged along the spiral direction of the variable pitch spring body. The surface of each oil control section has an oil inlet hole and a movable diaphragm fixed outside the oil inlet hole. The movable diaphragm realizes the opening and closing of the oil inlet hole and adjusts the actual opening area of ​​the oil inlet hole during rebound through magnetic attraction, flexibly responding to vibrations of different frequencies and realizing real-time adaptive control of oil flow.

[0008] Furthermore, the insert sleeve is a cylindrical structure with its inner cavity filled with lubricating oil to provide a shock-absorbing and lubricating environment; the pressing plate is a disc-shaped component, disposed inside the insert sleeve and sliding up and down along the insert sleeve axis to receive vibrations transmitted by the buffer rod; the top plate is an annular plate-shaped component and fixed below the pressing plate; the threaded rod is a cylindrical rod body, coaxially disposed at the bottom of the top plate to transmit pressure; the threaded rod buffer tube is a cylindrical structure, fixed at the bottom of the insert sleeve and coaxially disposed with the threaded rod to provide buffer space for the threaded rod.

[0009] Furthermore, the shock-absorbing spring assembly includes a top spring body, a spring split, an oil control section, and a one-way oil valve;

[0010] The top spring body is a hollow helical spring segment structure with a one-way oil valve fixed at its top. Multiple spring segments are provided, with adjacent segments connected by an oil control section to form a continuous helical spring structure. The pitch of each spring segment gradually increases from top to bottom, forming a variable pitch structure to adapt to different vibration frequencies. The top spring segment is connected to the top spring body via the oil control section. The bottom spring segment has a one-way oil valve fixed at its output port.

[0011] Furthermore, the oil control section includes a connecting section and an opening / closing diaphragm layer. The connecting section is used to connect two adjacent upper and lower spring segments, the spring segment located at the top, and the top spring body.

[0012] The opening and closing membrane layer has two layers, including an inner membrane and an outer membrane; the inner membrane is located inside the oil control section and has an oil inlet hole in its middle; the outer membrane is a semi-ring structure, which is separately and fixedly connected to the connecting section and two adjacent springs to form a complete ring structure, including a fixed membrane and a movable membrane.

[0013] Furthermore, the fixed membrane is a rigid membrane structure and is located below the movable membrane, fixed to the lower outer side of the corresponding connecting section; the movable membrane covers the outer side of the inner membrane and its top is fixed to the upper part of the corresponding connecting section, used to control the opening and closing of the oil inlet.

[0014] Furthermore, the lower part of the movable membrane is filled with iron powder 1, and the upper part is filled with iron powder 2; the upper part of the fixed membrane is embedded with a micro magnet, and the lower part is embedded with a second magnet. The micro magnet is used to attract iron powder 1 inside the oil control section, causing the movable membrane of this section to move down and close the oil inlet of this section; the second magnet is used to attract iron powder 2 located in the oil control section directly below it during the rebound process after compression, causing the movable membrane located in the oil control section directly below it to move up to open the corresponding oil inlet, thereby realizing automatic oil suction under negative pressure.

[0015] The top spring body has multiple first magnets fixed circumferentially along its spiral trajectory, corresponding to the positions of the top oil control section. During the rebound process, these magnets attract iron powder II located in the top oil control section, causing the moving membrane located in the top oil control section to move upward to open the oil inlet.

[0016] Furthermore, the magnetism of the first magnet is greater than that of the micro-magnet located in the top layer oil control section and less than that of the second magnet located in the top layer oil control section; the magnetism of the second magnet in each layer is greater than that of the micro-magnet located in the oil control section of the adjacent layer directly above it; the magnetism of the second magnet increases sequentially from top to bottom; the filling amount of iron powder I inside each oil control section is less than the filling amount of iron powder II inside it.

[0017] Furthermore, the inner membrane is a flexible film made of shape memory polymer material, which allows the oil inlet to naturally close its actual opening during the compression of the shock-absorbing spring assembly, forcing the internal hydraulic oil to be sprayed out only from the one-way oil valves at the upper and lower ends, forming a one-way flow tendency; and automatically opening under negative pressure during rebound, realizing automatic intake of hydraulic oil from the outside and quickly maintaining balance.

[0018] Furthermore, the oil lifting assembly includes a lifting column and lifting blades;

[0019] The lifting column is a cylindrical rod, coaxially arranged with the threaded rod; the lifting blade has a helical structure, used for adaptive bending in the oil.

[0020] Furthermore, the lifting blade includes a hinge seat, a lifting rod, and a flexible sheet;

[0021] Multiple lifting rods are provided, evenly arranged along the axial direction of the lifting column in a spiral structure, and hinged to the outside of the lifting column through a hinge seat; multiple flexible sheets are provided, which are fan-shaped structures made of elastic material, and their two ends are fixedly connected to two adjacent corresponding lifting columns, respectively, for automatically adjusting the lifting angle of the lifting blades according to the viscosity of the oil.

[0022] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0023] By employing a variable pitch structure in the damping spring assembly, adaptive vibration frequency matching is achieved, improving the smoothness of the damping response and solving the problems of insufficient linear response and aggravated swaying caused by the constant stiffness of traditional springs. The magnetically controlled moving membrane in the oil control section enables real-time adaptive adjustment of oil flow, improving damping accuracy and response speed, and addressing the issues of oil flow delay and insufficient adaptation to high-frequency vibrations. The shape memory polymer of the inner membrane enables automatic opening and closing of the oil inlet, strengthening the unidirectional flow tendency and solving the problem of damping force fluctuation in bidirectional oil flow. The flexible lifting blades of the oil lifting assembly achieve dynamic optimization of oil lifting, improving… Improved cooling uniformity addresses issues such as inconsistent performance due to temperature variations and insufficient cooling affecting lifespan. It effectively solves existing technical problems including delayed oil flow response, inability to adapt to high-frequency vibrations in real time, inconsistent damping performance due to temperature changes, insufficient damping force due to bidirectional oil flow, incomplete suppression of harmonic motion leading to increased swaying, and insufficient cooling affecting spring lifespan. The resulting improvements include faster oil flow adaptive control response, improved temperature-adaptive damping consistency, enhanced damping effect from unidirectional flow, improved equipment stability through effective suppression of harmonic motion, and optimized cooling efficiency extending service life. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a spinning drum shock absorption device for textile machinery according to the present invention.

[0025] Figure 2 This is a schematic diagram of the shock-absorbing spring assembly of a spinning roller shock-absorbing device for textile machinery according to the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of multiple continuous spring sections and oil control sections of a spinning drum shock absorption device for textile machinery according to the present invention.

[0027] Figure 4 This is a longitudinal full sectional view of the spring split and oil control section of a spinning drum shock absorption device for textile machinery according to the present invention.

[0028] Figure 5 This is a longitudinal full sectional view of the upper and lower continuous springs and the oil control section of a spinning drum shock absorption device for textile machinery according to the present invention during rebound.

[0029] Figure 6 This invention relates to a vibration damping device for spinning rollers in textile machinery. Figure 5 A magnified view of a portion of point A in the middle.

[0030] Figure 7 This is a schematic diagram of the oil lifting component of a spinning drum shock absorption device for textile machinery according to the present invention.

[0031] Figure 8 This invention relates to a vibration damping device for spinning rollers in textile machinery. Figure 7 A magnified view of a portion of point B in the middle.

[0032] In the diagram: 100, Insert rod sleeve; 110, Pressing plate; 120, Top plate; 130, Threaded rod; 140, Threaded rod buffer tube; 200, Shock-absorbing spring assembly; 210, Top spring body; 211, First magnet; 220, Spring split; 230, Oil control section; 231, Connecting section; 240, One-way oil valve; 250, Inner membrane; 251, Oil inlet; 260, Fixed membrane; 261, Micro magnet; 262, Second magnet; 270, Moving membrane; 271, Iron powder one; 272, Iron powder two; 300, Oil lifting assembly; 310, Lifting column; 320, Lifting blade; 321, Hinge seat; 322, Lifting rod; 323, Flexible sheet. Detailed Implementation

[0033] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0034] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] Example 1: As Figures 1 to 4 As shown, this application discloses a vibration damping device for spinning rollers in textile machinery, comprising a rod sleeve 100, lubricating oil, a pressing plate 110, a top plate 120, a threaded rod 130, a threaded rod buffer tube 140, a vibration damping spring assembly 200, and an oil lifting assembly 300.

[0037] The shock-absorbing spring assembly 200 adopts a variable pitch hollow spring body structure with a denser upper section and a sparser lower section. It has multiple oil control sections 230 evenly arranged along the spiral direction of the variable pitch spring body. The surface of each oil control section 230 is provided with an oil inlet hole 251 and a movable membrane 270 fixed outside the oil inlet hole 251. The movable membrane 270 realizes the opening and closing of the oil inlet hole 251 and adjusts the actual opening area of ​​the oil inlet hole 251 during rebound through magnetic attraction, flexibly responding to vibrations of different frequencies and realizing real-time adaptive control of oil flow.

[0038] like Figure 1 As shown, the insert sleeve 100 is a cylindrical structure with its inner cavity filled with lubricating oil to provide a shock-absorbing and lubricating environment; the pressing plate 110 is a disc-shaped component, disposed inside the insert sleeve 100 and sliding up and down along the axial direction of the insert sleeve 100, used to receive the vibration transmitted by the buffer rod; the top plate 120 is an annular plate-shaped component and fixed below the pressing plate 110; the threaded rod 130 is a cylindrical rod body, coaxially disposed at the bottom of the top plate 120, used to transmit pressure; the threaded rod buffer tube 140 is a cylindrical structure, fixed at the bottom of the insert sleeve 100, coaxially disposed with the threaded rod 130, used to provide buffer space for the threaded rod 130.

[0039] This application employs a variable-pitch hollow spring structure with a denser upper coil and a sparser lower coil. This allows the sparser coils (lower stiffness) at the bottom of the spring to be compressed first, providing initial gentle cushioning. As the pressure increases, the denser upper coils (higher stiffness) provide stronger support. Furthermore, during the rebound process, the force is released gradually, with the sparser portion rebounding first and the denser portion rebounding later, creating a gradient of energy release. This avoids a sudden burst of energy, effectively suppressing the rebound speed and amplitude, directly reducing or even eliminating simple harmonic motion, thereby preventing the spinning roller from swaying excessively. Simultaneously, the gradual change in stiffness allows the damping spring assembly 200 to more flexibly adapt to vibrations of varying intensities, providing a smoother and more snug cushioning effect, significantly reducing the impact caused by strong vibrations, and improving the stability of equipment operation.

[0040] like Figures 1 to 6 As shown, the shock absorber spring assembly 200 includes a top spring body 210, a spring split 220, an oil control section 230, and a one-way oil valve 240.

[0041] The top spring body 210 is a hollow helical spring segment structure, with a one-way oil valve 240 fixed at its top. Multiple spring segments 220 are provided, with adjacent segments connected by an oil control section 230 to form a continuous helical spring structure. The pitch of each spring segment 220 gradually increases from top to bottom, forming a variable pitch structure to adapt to different vibration frequencies. The top spring segment 220 is connected to the top spring body 210 via the oil control section 230. The bottom spring segment 220 has a one-way oil valve 240 fixed at its output port.

[0042] like Figures 2 to 6 As shown, the oil control section 230 includes a connecting section 231 and an opening and closing diaphragm layer. The connecting section 231 is used to connect two adjacent upper and lower spring segments 220, the spring segment 220 located at the top and the top spring body 210.

[0043] The opening and closing membrane layer has two layers, including an inner membrane 250 and an outer membrane; the inner membrane 250 is located inside the oil control section 230, and an oil inlet hole 251 is opened in the middle of it; the outer membrane is a semi-annular structure, which is fixedly connected to the connecting section 231 and two adjacent spring splits 220 to form a complete circular ring structure, including a fixed membrane 260 and a movable membrane 270.

[0044] like Figures 2 to 6 As shown, the fixed membrane 260 is a rigid membrane structure and is located below the movable membrane 270, fixed to the lower side of the corresponding connecting section 231; the movable membrane 270 covers the outer side of the inner membrane 250 and its top is fixed to the upper part of the corresponding connecting section 231, used to control the opening and closing of the oil inlet 251.

[0045] like Figures 2 to 6 As shown, the lower part of the movable membrane 270 is filled with iron powder 271, and the upper part is filled with iron powder 272; the upper part of the fixed membrane 260 is embedded with a micro magnet 261, and the lower part is embedded with a second magnet 262. The micro magnet 261 is used to attract the iron powder 271 inside the oil control section 230, so that the movable membrane 270 in this section moves down to close the oil inlet 251 of this section; the second magnet 262 is used to attract the iron powder 272 in the oil control section 230 directly below it during the rebound process after compression, so that the movable membrane 270 in the oil control section 230 directly below it moves up to open the corresponding oil inlet 251, so as to realize automatic oil suction under negative pressure.

[0046] The top spring body 210 has a plurality of first magnets 211 fixed circumferentially along its spiral trajectory, corresponding to the positions of the top oil control section 230. During the rebound process, the magnets attract iron powder 272 located in the top oil control section 230, causing the moving membrane 270 located in the top oil control section 230 to move upward to open the oil inlet 251.

[0047] The magnetism of the first magnet 211 is greater than that of the micromagnet 261 located in the top oil control section 230 and less than that of the second magnet 262 located in the top oil control section 230; the magnetism of the second magnet 262 in each layer is greater than that of the micromagnet 261 located in the oil control section 230 of the adjacent layer directly above it; the magnetism of the second magnet 262 increases from top to bottom; the filling amount of iron powder 271 inside each oil control section 230 is less than the filling amount of iron powder 272 inside it.

[0048] like Figures 3 to 6 As shown, the inner membrane 250 is a flexible thin film made of shape memory polymer material, which causes the oil inlet 251 to close its actual opening naturally during the compression of the shock absorber spring assembly 200, so that the hydraulic oil inside is forced to spray out only from the one-way oil valves 240 at the upper and lower ends, forming a one-way flow tendency; and automatically opens under negative pressure during rebound, realizing automatic intake of hydraulic oil from the outside and quickly maintaining balance.

[0049] This application utilizes the shape memory polymer material of the inner membrane 250 to achieve automatic opening and closing deformation of the oil inlet 251. Specifically, by using the shape memory polymer material of the inner membrane 250, the opening of the oil inlet 251 can soften, deform, and contract when the damping spring assembly 200 is compressed (because its internal pressure and temperature will rise during compression), naturally closing the opening and forcing the oil to be sprayed out only from the one-way oil valves 240 at the upper and lower ends. Furthermore, upon rebound (because the oil is discharged from the one-way oil valve during compression, its interior is under negative pressure and the temperature will drop), it can return to its original shape and automatically open. In conjunction with the movement of the moving membrane 270, the oil inlet channel is exposed, achieving rapid oil absorption, further strengthening the unidirectional flow tendency of the oil, reducing the damping fluctuations caused by bidirectional flow, and improving the damping stability.

[0050] like Figure 5 and Figure 6The diagram shows the state of the multi-segment spring assembly 220 when it rebounds without external force. In each segment of the oil control section 230, the moving diaphragm 270 is attracted upwards by the second magnet 262 in the oil control section 230 directly above it, thus opening the oil inlet 251 inside. During this rebound process, because the entire damping spring assembly 200 is compressed by external force, its interior is under negative pressure. Therefore, when the oil inlet 251 is opened, hydraulic oil can be automatically drawn in from the outside, quickly... Maintaining balance; when the oil control section 230 of each layer rebounds to a certain height (that is, the vertical distance between the iron powder 272 in the oil control section 230 and the second magnet 262 in the oil control section 230 directly above it exceeds the height distance that can attract the iron powder 272), the moving membrane 270 in the oil control section 230 will move downward under its own gravity and the magnetic attraction of the iron powder 271 and the second magnet 262 located inside the oil control section 230, and then automatically close the oil inlet 251.

[0051] Specifically, under different degrees of vibration, the oil control section 230 in each layer will be compressed to varying degrees. With each vibration, the height of the compressed oil control section 230 changes, and the vertical distance between two adjacent oil control sections 230 also changes. This means that the height of each oil control section 230 changes at the moment of rebound, causing a change in the magnetic attraction of the second magnet 262 located in the layer directly above the oil control section 230 to the iron powder 272 within that oil control section 230. This results in a change in the upward movement of the moving membrane 270 due to magnetic attraction during rebound, thus changing the actual opening area of ​​the oil inlet 251. Therefore, the actual opening area of ​​the oil inlet 251 is automatically adjusted according to different degrees of vibration, enabling real-time adaptive control of oil flow, avoiding oil inertial delay, improving damping accuracy, solving the problem of insufficient oil flow response, and further reducing the risk of resonance.

[0052] This application achieves adaptive oil control action of the variable pitch spring through the magnetic gradient design of the second magnet 262 of the upper and lower adjacent oil control sections 230. By using the second magnet 262 with the magnetic properties increasing from top to bottom to adapt to the variable pitch spring structure and cooperating with the moving diaphragm 270 of the corresponding oil control section 230, differentiated magnetic attraction forces are generated in different spring coil layers. Thus, under high-frequency vibration, the lower oil control section 230 with stronger magnetic properties can preferentially open the oil inlet hole 251 to accelerate oil absorption; under low-frequency vibration, the upper oil control section 230 with weaker magnetic properties responds slowly, so that the oil flow and the nonlinear deformation of the spring are coordinated, thereby optimizing the oil distribution, avoiding excessively high or low local oil pressure, and improving the consistency of shock absorption.

[0053] like Figure 1 , Figure 7 and Figure 8As shown, the oil lifting assembly 300 includes a lifting column 310 and a lifting blade 320; the lifting column 310 is a cylindrical rod, coaxially arranged with the threaded rod 130; the lifting blade 320 has a helical structure for adaptive bending in the oil.

[0054] The lifting blade 320 includes a hinge seat 321, a lifting rod 322, and a flexible sheet 323;

[0055] Multiple lifting rods 322 are provided, evenly arranged in a spiral structure along the axial direction of the lifting column 310, and hinged to the outside of the lifting column 310 through the hinge seat 321; multiple flexible sheets 323 are provided, which are fan-shaped structures and made of elastic material, and their two ends are respectively fixedly connected to two adjacent corresponding lifting columns 310, which are used to automatically adjust the lifting angle of the lifting blade 320 according to the viscosity of the oil.

[0056] This application achieves dynamic optimization of oil lifting by flexibly engaging the lifting blade 320 of the oil lifting assembly 300 with the hinge seat 321. By setting the hinged lifting blade 320, it can automatically adjust its angle according to the oil resistance when the threaded rod 130 is pressed down. The flexible sheet 323 deforms to compensate for viscosity changes, so that under high-speed vibration, the lifting blade 320 can adaptively bend to increase the oil spraying area. Furthermore, when the temperature changes, the elastic deformation of the flexible sheet 323 can ensure that the oil is evenly sprayed on the surface of the shock-absorbing spring assembly 200, further improving cooling efficiency and avoiding performance degradation caused by overheating.

[0057] In actual operation, the steps of this embodiment are as follows:

[0058] S1: When the textile machinery is working, the vibration it generates is transmitted to the pressing plate 110 inside the insert sleeve 100 through the buffer rod. The pressing plate 110 begins to slide downward along the axial direction of the insert sleeve 100. When it is pressed down, it drives the top plate 120 below and the threaded rod 130 set on the same axis to fall down together.

[0059] S2: When the threaded rod 130 is pressed down, the damping spring assembly 200 is compressed. Its variable pitch structure (dense at the top and sparse at the bottom) causes the lower sparse coil layer (low stiffness) to be compressed first, providing gentle buffering, while the upper dense coil layer (high stiffness) is compressed later, providing strong support, realizing the gradual release of energy and reducing or even avoiding the shaking caused by simple harmonic motion. During the overall compression process, the oil pressure and temperature inside the damping spring assembly 200 increase. The shape memory polymer material of the inner membrane 250 causes the oil inlet 251 to close automatically, forcing the oil to be sprayed out only from the one-way oil valves 240 at the upper and lower ends, realizing unidirectional flow and buffering effect.

[0060] S3: When the threaded rod 130 is pressed down, it drives the lifting blade 320 of the oil lifting assembly 300 to rotate through the threaded engagement. The lifting blade 320 automatically adjusts its angle according to the oil resistance (i.e., through the deformation of the hinge seat 321 and the flexible plate 323), lifting the lubricating oil deposited at the bottom of the insert sleeve 100 and evenly spraying it on the surface of the shock absorber spring assembly 200 for active cooling to avoid overheating and affecting performance.

[0061] S4: When the vibration weakens or stops, the damping spring assembly 200 rebounds, generating negative pressure and lowering the temperature inside, causing the oil inlet 251 to open automatically. During the rebound, the moving diaphragm 270 moves upward under the magnetic attraction of the second magnet 262 of the upper oil control section 230, actually opening the channel connecting the oil inlet 251 to the outside. The negative pressure guides the external oil to be drawn into the interior, and the magnetic attraction can automatically adjust the actual opening area of ​​the oil inlet 251 according to the vibration intensity, realizing real-time adaptive control of the oil flow, avoiding inertial delay and disordered flow, ensuring stable damping force, and suppressing rebound sway.

[0062] The above steps are repeated. The damping spring assembly 200 continuously adapts to vibrations of different frequencies through a variable pitch structure and a magnetic control system. The oil lifting assembly 300 ensures uniform cooling. Multiple components work together to improve the oil flow response speed and damping consistency, effectively suppressing simple harmonic motion.

[0063] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0064] The variable pitch structure of the damping spring assembly 200 enables adaptive vibration frequency matching, improving the smoothness of the damping response. The magnetically controlled moving membrane 270 of the oil control section 230 enables real-time adaptive adjustment of oil flow, improving damping accuracy and response speed. The shape memory polymer of the inner membrane 250 enables automatic opening and closing of the oil inlet 251, strengthening the unidirectional flow tendency. The flexible lifting blade 320 of the oil lifting assembly 300 enables dynamic optimization of oil lifting, thereby improving cooling uniformity and solving the problems of inconsistent performance and insufficient cooling affecting lifespan caused by temperature changes. The technical effects achieved include improved response speed of adaptive oil flow control, improved damping consistency of temperature adaptive performance, enhanced damping effect of unidirectional flow, effective suppression of simple harmonic motion to improve equipment stability, and optimized cooling efficiency to extend service life.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vibration damping device for spinning rollers in textile machinery, characterized in that, Includes insert sleeve (100), lubricating oil, pressing plate (110), top plate (120), threaded rod (130), threaded rod buffer tube (140), shock-absorbing spring assembly (200) and oil lifting assembly (300). The shock-absorbing spring assembly (200) adopts a variable pitch hollow spring body structure with a dense upper part and a sparse lower part. It has multiple oil control sections (230) evenly arranged along the spiral direction of the variable pitch spring body. The surface of the oil control section (230) is provided with an oil inlet hole (251). The surface of the oil control section (230) is fixed with a movable membrane (270) located outside the oil inlet hole (251). The movable membrane (270) realizes the opening and closing of the oil inlet hole (251) and adjusts the actual opening area of ​​the oil inlet hole (251) when it rebounds through magnetic attraction. It flexibly responds to vibrations of different frequencies and realizes real-time adaptive control of oil flow. The shock-absorbing spring assembly (200) includes a top spring body (210), spring segments (220), an oil control section (230), and a one-way oil valve (240). The top spring body (210) is a hollow helical spring segment structure, with a one-way oil valve (240) fixed at its top. Multiple spring segments (220) are provided, with adjacent spring segments (220) connected to each other through the oil control section (230) to form a continuous helical spring structure. The pitch of each spring segment (220) gradually increases from top to bottom, forming a variable pitch structure to adapt to different vibration frequencies. The spring segment (220) at the top is connected to the top spring body (210) through the oil control section (230). The output port of the spring segment (220) at the bottom is fixed with a one-way oil valve (240). The oil control section (230) includes a connecting section (231) and an opening and closing diaphragm layer. The connecting section (231) is used to connect two adjacent spring bodies (220) on the top and the top spring body (210). The opening and closing membrane layer has two layers, including an inner membrane (250) and an outer membrane; the inner membrane (250) is located inside the oil control section (230), and an oil inlet hole (251) is opened in the middle of it; the outer membrane is a semi-annular structure, which is fixedly connected to the connecting section (231) and two adjacent spring splits (220) to form a complete circular ring structure. The outer membrane includes a fixed membrane (260) and a movable membrane (270). The fixed membrane (260) is a rigid membrane structure and is located below the movable membrane (270), fixed on the lower side of the corresponding connecting section (231); the movable membrane (270) covers the outside of the inner membrane (250) and its top is fixed on the upper part of the corresponding connecting section (231), used to control the opening and closing of the oil inlet (251); The lower part of the movable membrane (270) is filled with iron powder one (271), and the upper part is filled with iron powder two (272); the upper part of the fixed membrane (260) is embedded with a micro magnet (261), and the lower part is embedded with a second magnet (262); the top spring body (210) is circumferentially fixed with a plurality of first magnets (211) along its spiral trajectory, corresponding to the position of the oil control section (230) located in the top ring.

2. The vibration damping device for spinning rollers in textile machinery as described in claim 1, characterized in that, The insert sleeve (100) is a cylindrical structure with its inner cavity filled with lubricating oil to provide a shock-absorbing and lubricating environment; the pressing plate (110) is a disc-shaped component, which is set inside the insert sleeve (100) and slides up and down along the axial direction of the insert sleeve (100) to receive the vibration transmitted by the buffer rod; the top plate (120) is an annular plate-shaped component and is fixed below the pressing plate (110); the threaded rod (130) is a cylindrical rod body, which is coaxially set at the bottom of the top plate (120) to transmit pressure; the threaded rod buffer tube (140) is a cylindrical structure, which is fixed at the bottom of the insert sleeve (100) and coaxially set with the threaded rod (130) to provide buffer space for the threaded rod (130).

3. The vibration damping device for spinning rollers in textile machinery as described in claim 1, characterized in that, The magnetism of the first magnet (211) is greater than that of the micro magnet (261) in the oil control section (230) of the top ring and less than that of the second magnet (262) in the oil control section (230) of the top ring; The magnetism of the second magnet (262) in each layer is greater than that of the micro magnet (261) in the oil control section (230) located directly above it in the adjacent layer; the magnetism of the second magnet (262) increases from top to bottom; the amount of iron powder I (271) inside each oil control section (230) is less than the amount of iron powder II (272) inside it.

4. A vibration damping device for spinning rollers in textile machinery as described in claim 1, characterized in that, The inner membrane (250) is a flexible film made of shape memory polymer material, which makes the oil inlet (251) naturally close its actual opening during the compression of the shock absorber spring assembly (200), so that the hydraulic oil inside is forced to spray out only from the one-way oil valves (240) at the upper and lower ends, forming a one-way flow tendency, and automatically opening under negative pressure during rebound, so as to automatically draw in hydraulic oil from the outside and quickly maintain balance.

5. A vibration damping device for spinning rollers in textile machinery as described in claim 1, characterized in that, The oil lifting assembly (300) includes a lifting column (310) and a lifting blade (320); the lifting column (310) is a cylindrical rod, coaxially arranged with the threaded rod (130); the lifting blade (320) has a spiral structure and adaptively bends in the oil.

6. A vibration damping device for spinning rollers in textile machinery as described in claim 5, characterized in that, The lifting blade (320) includes a hinge seat (321), a lifting rod (322), and a flexible sheet (323). Multiple lifting rods (322) are provided, which are evenly arranged along the axial direction of the lifting column (310) in a spiral structure and are hinged to the outside of the lifting column (310) through the hinge seat (321); multiple flexible sheets (323) are provided, which are fan-shaped and made of elastic material. Their two ends are fixedly connected to two adjacent lifting rods (322) respectively, and the lifting angle of the lifting blade (320) is automatically adjusted according to the viscosity of the oil.

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