Extrusion force self-adaptive adjusting method and system for fibrofelt winding and terminal

Abstract

The invention relates to an extrusion force self-adaptive adjusting method and system for fiber felt winding and a terminal, and belongs to the technical field of fiber felt processing and production.The extrusion force self-adaptive adjusting method comprises the steps that at the initial stage, the winding linear speed of fiber felt winding is obtained; calculating the initial extrusion force of a pressure roller according to the set material parameters of the fiber felt and the winding linear speed; according to the initial extrusion force, the pressure of a proportional valve A cavity and a proportional valve B cavity corresponding to an air cylinder is adjusted; in the winding stage, the actual winding diameter of fiber felt winding is obtained; calculating a pressure compensation amount according to the actual rolling diameter; according to the pressure compensation amount, updated extrusion force is obtained; and according to the updated extrusion force, the pressure of the A cavity and the pressure of the B cavity of the proportional valve are adjusted. The method has the beneficial effect that the influence on the mechanical property and the surface quality of the fiber felt is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fiber felt processing and production, and in particular to a method, system and terminal for adaptively adjusting the extrusion pressure for fiber felt winding. Background Art

[0002] After the fabric is formed, it needs to be wound into a cylinder for easy transportation. For fabrics with insufficient strength, such as fiber felts, if the differential speed between the winding roller and the conveying device is too large, the fiber felt will be accidentally stretched or even broken; if the differential speed between the winding roller and the conveying device is small, the fiber felt cylinder will be loose, large in volume and not convenient for transportation.

[0003] To solve the above problems, in the related art, a pressure roller and a friction roller are introduced; the friction roller is arranged on both sides of the support roller so that the fiber felt is wound on the support roller; and the friction roller is used as the driving roller and the support roller is used as the driven roller, and the rotation of the support roller is driven by the friction roller to realize the winding of the fiber felt. The pressure roller is arranged above the support roller, and the cylinder drives the movement of the pressure roller so that the pressure roller extrudes the fiber felt, and the winding density of the fiber felt increases under the action of the pressure.

[0004] As the fiber felt is wound, the extrusion pressure of the pressure roller is adjusted by preset air pressure parameters or manually adjusted by the staff. According to the preset air pressure parameters or the way of manual adjustment of air pressure parameters, problems such as fiber layer slip, edge warping and uneven thickness are likely to occur, seriously affecting the mechanical properties and surface quality of the fiber felt. Summary of the Invention

[0005] In order to reduce the influence on the mechanical properties and surface quality of the fiber felt, the present application provides a method, system and terminal for adaptively adjusting the extrusion pressure for fiber felt winding.

[0006] In the first aspect, the present application provides a method for adaptively adjusting the extrusion pressure for fiber felt winding, adopting the following technical solutions: A method for adaptively adjusting the extrusion pressure for fiber felt winding includes: In the initial stage, obtain the winding linear speed of the fiber felt winding; According to the set material parameters of the fiber felt and the winding linear speed, calculate the initial extrusion pressure of the pressure roller; According to the initial extrusion pressure, adjust the pressure of the corresponding proportional valve A chamber and B chamber of the cylinder; In the winding stage, obtain the actual winding diameter of the fiber felt winding; According to the actual winding diameter, calculate the pressure compensation amount; According to the pressure compensation amount, obtain the updated extrusion pressure; According to the updated extrusion pressure, adjust the pressure of the proportional valve A chamber and B chamber.

[0007] By adopting the above technical solution, in the initial stage, the initial extrusion pressure of the pressure roller is calculated according to the material parameters of the fiber felt and the winding line speed, which can ensure that the extrusion pressure applied by the pressure roller to the fiber felt at the beginning of winding meets the material characteristics and winding requirements. In the winding stage, as the winding progresses, the winding diameter of the fiber felt continuously increases. If the extrusion pressure is not adjusted accordingly, the tightness of the inner and outer layers of the winding will be inconsistent. Therefore, calculating the pressure compensation amount according to the actual winding diameter of the fiber felt, and then obtaining the updated extrusion pressure and adjusting the pressures in chambers A and B of the proportional valve can adjust the extrusion pressure in real time according to the change of the winding diameter, ensure the uniform tightness of the fiber felt during the whole winding process, and further improve the winding quality. Since the adjustment process of the whole extrusion pressure is automated, by obtaining parameters such as the winding line speed and the actual winding diameter, the extrusion pressure of the pressure roller is automatically calculated and adjusted. Therefore, manual intervention is reduced, the adjustment error caused by human factors is reduced, and the production efficiency is improved. At the same time, the automatic adjustment can respond to the changes in the winding process in real time, adjust the extrusion pressure in time, ensure the stability and reliability of the winding process, and thus reduce the influence on the mechanical properties and surface quality of the fiber felt.

[0008] Optionally, the specific steps of obtaining the actual winding diameter of the fiber felt include: Obtaining the cumulative number of rotations of the friction roller; Calculating the actual winding diameter of the fiber felt according to the cumulative number of rotations, the initial diameter of the support roller, and the material parameters.

[0009] By adopting the above technical solution, the friction roller is in direct contact with the fiber felt, and its number of rotations is closely related to the winding situation of the fiber felt. As the fiber felt is continuously wound, the friction roller rotates continuously, and the cumulative number of rotations can reflect the progress and thickness change of the fiber felt winding. The initial diameter of the support roller is the basic dimension of the winding, and the material parameters reflect the characteristics of the fiber felt itself, such as thickness, density, etc. The thickness change and tightness degree of different materials of fiber felt are different during the winding process. Combining the material parameters can more accurately calculate the actual winding diameter and avoid the measurement error caused by material differences. During the winding process, the winding diameter of the fiber felt will continuously increase as the winding progresses. Obtaining the winding diameter information in real time can enable the system to respond in time, adjust parameters such as the extrusion pressure to adapt to the change of the winding diameter.

[0010] Optionally, the steps after obtaining the updated extrusion pressure include: Obtaining the speed difference between the friction line speed of the friction roller and the winding line speed; Judging whether the absolute value of the speed difference is within the threshold range; If not, when the speed difference is positive, obtaining a corrected extrusion pressure according to the speed difference and the updated extrusion pressure; Adjust the pressures of the A chamber and the B chamber of the proportional valve according to the corrected extrusion pressure; When the speed difference is negative, calculate the actual pressure value according to the absolute value of the speed difference; Adjust the pressures of the A chamber and the B chamber of the proportional valve according to the actual pressure value; If so, adjust the pressures of the A chamber and the B chamber of the proportional valve according to the updated extrusion pressure.

[0011] By adopting the above technical solution, after obtaining the updated extrusion pressure, by obtaining the speed difference between the friction linear speed of the friction roller and the winding linear speed, and further adjusting the extrusion pressure according to the speed difference situation, it can ensure that the compactness of each part of the fiber felt is more uniform during the winding process. The judgment of the speed difference and the correction of the extrusion pressure can effectively reduce the defects in the winding process of the fiber felt; if the speed difference is abnormal and not adjusted, problems such as wrinkles and deformation of the fiber felt may occur. By monitoring the speed difference in real time and adjusting the extrusion pressure, the possible problems can be corrected in time, making the winding process more stable and reducing the defective rate. The whole process is based on the automatic judgment of the speed difference and the automatic adjustment of the extrusion pressure, reducing the need for manual intervention.

[0012] Optionally, the extrusion pressure adaptive adjustment method further includes: During the winding stage, judge whether the actual winding diameter reaches the set winding diameter limit threshold; If so, calculate the real-time pressure value according to the actual winding diameter, the winding diameter limit threshold and the set maximum winding diameter; Adjust the pressures of the A chamber and the B chamber of the proportional valve according to the real-time pressure value.

[0013] By adopting the above technical solution, during the winding stage, when the actual winding diameter reaches the set winding diameter limit threshold, by calculating the real-time pressure value and adjusting the pressures of the A chamber and the B chamber of the proportional valve, it is possible to avoid over-winding of the fiber felt. The real-time adjustment of the extrusion pressure can ensure that when approaching the winding diameter limit threshold, the extrusion pressure can still be maintained within a suitable range, ensuring the compactness and uniformity of the winding. Calculating the real-time pressure value according to the actual winding diameter, the winding diameter limit threshold and the set maximum winding diameter can make the extrusion pressure better adapt to the change of the winding diameter during the winding process. This helps to maintain the integrity of the fiber felt during the whole winding process, reducing problems such as damage, wrinkles or fractures of the fiber felt caused by improper extrusion pressure. During the winding process, it is possible to automatically adjust the extrusion pressure according to the winding diameter situation, avoiding the process of frequent manual intervention and adjustment, and improving the production efficiency.

[0014] Optionally, the step of adjusting the pressures of the A chamber and the B chamber of the proportional valve according to the actual extrusion pressure in the initial stage or the winding stage includes: Calculate the effective area of the cylinder according to the cylinder diameter and the rod diameter of the cylinder; Obtain the gas source pressure according to the actual extrusion pressure and the effective area. Obtain the pressures of the A chamber and the B chamber of the proportional valve according to the gas source pressure.

[0015] By adopting the above technical solution, different combinations of cylinder bore diameters and rod diameters will result in different effective areas, and the effective area is the key factor affecting pressure conversion. Accurately calculating the effective area can avoid errors caused by estimation or default values, making the gas source pressure and the pressures of the A chamber and the B chamber of the proportional valve calculated based on this more accurate, thereby improving the accuracy of extrusion pressure adjustment during the entire fiber mat winding process and ensuring the winding quality. During the fiber mat winding process, the actual extrusion pressure will change with factors such as the winding stage and the change of the winding diameter. Calculating based on the actual extrusion pressure can ensure that the gas source pressure can accurately match the pressure requirements during the winding process, and then obtain the pressures of the A chamber and the B chamber of the proportional valve according to the gas source pressure, enabling the proportional valve to more accurately control the movement of the cylinder and achieve precise adjustment of the extrusion pressure. Since the pressures of the A chamber and the B chamber of the proportional valve can be adjusted promptly and accurately, the stability of the pressure during the winding process is ensured. The stable pressure helps to avoid winding quality problems caused by pressure fluctuations, such as the fiber mat not being wound tightly and uneven interlayer gaps, further improving the stability and reliability of the winding process.

[0016] Optionally, the step of obtaining the pressures of the A chamber and the B chamber of the proportional valve according to the gas source pressure includes: In the stored historical extrusion pressure - working condition data table, search for the historical gas source pressure similar to the gas source pressure. If there is only one such historical gas source pressure, extract the historical pressures of the A chamber and the B chamber of the proportional valve associated with the historical gas source pressure. If there are multiple such historical gas source pressures, calculate the average value of the multiple historical gas source pressures. Search in the historical extrusion pressure - working condition data table for the historical gas source pressure closest to the average value. Extract the historical pressures of the A chamber and the B chamber of the proportional valve associated with the historical gas source pressure.

[0017] By adopting the above technical solution, although there are differences in each winding condition, there are also similarities. The historical data records the appropriate pressure values of the A and B chambers of the proportional valve under similar gas source pressures. Extracting these historical pressure values as a reference can avoid pressure adjustment deviations caused by the limitations of theoretical calculations or complex environmental factors, making the pressures of the A and B chambers of the proportional valve more in line with the actual requirements, thereby improving the accuracy of extrusion pressure adjustment and ensuring the winding quality of the fiber felt. When there are multiple similar historical gas source pressures, calculate their average value and find the historical gas source pressure closest to it, and then extract the associated historical pressures of the A and B chambers of the proportional valve, reducing the accidental errors that may exist in individual historical data, making the finally determined pressure value more representative and reliable, and further improving the precision of pressure adjustment. At the beginning of a new winding task, there is no need to perform complex pressure debugging and parameter settings every time. By referring to the historical data, the system can quickly determine the appropriate pressures of the A and B chambers of the proportional valve, greatly reducing the debugging time and improving production efficiency.

[0018] Optionally, the extrusion pressure adaptive adjustment method further includes: During the winding stage, obtain the pressure change rate in real time; Judge whether the pressure change rate drops suddenly; If so, control the pressure roller to reset at a speed of N mm / s and send a warning message.

[0019] By adopting the above technical solution, when the pressure change rate drops suddenly, it means that an abnormal situation has occurred during the winding process, such as fiber felt breakage, equipment component failure, etc. If not handled in time, the continuous abnormal pressure may cause further damage to equipment such as the pressure roller and the winder. Controlling the pressure roller to reset at a speed of N mm / s can quickly relieve the abnormal pressure borne by the equipment.

[0020] In a second aspect, the present application provides an extrusion pressure adaptive adjustment system for fiber felt winding, adopting the following technical solution: An extrusion pressure adaptive adjustment system for fiber felt winding, comprising: A data acquisition module, used to obtain the winding line speed of fiber felt winding in the initial stage; A data processing module, used to calculate the initial extrusion pressure of the pressure roller according to the set material parameters of the fiber felt and the winding line speed; A control and adjustment module, used to adjust the pressures of the A and B chambers of the proportional valve corresponding to the cylinder according to the initial extrusion pressure; The data acquisition module is further configured to obtain the actual winding diameter of the fiber felt during the winding stage. The data processing module is further configured to calculate a pressure compensation amount according to the actual winding diameter, and obtain an updated extrusion pressure according to the pressure compensation amount. The control and adjustment module is further configured to adjust the pressures in the A chamber and the B chamber of the proportional valve according to the updated extrusion pressure.

[0021] In a third aspect, the present application provides a terminal, adopting the following technical solution: A terminal, comprising: A memory storing an extrusion pressure adaptive adjustment program for fiber felt winding; A processor configured to execute the program stored on the memory to implement the steps of the above-mentioned extrusion pressure adaptive adjustment method for fiber felt winding.

[0022] In summary, the present application has at least the following beneficial effects: In the initial stage, the initial extrusion pressure of the pressure roller is calculated according to the material parameters of the fiber felt and the winding line speed, which can ensure that the extrusion pressure applied by the pressure roller to the fiber felt at the beginning of winding meets the material characteristics and winding requirements. During the winding stage, as the winding progresses, the winding diameter of the fiber felt continuously increases. If the extrusion pressure is not adjusted accordingly, the tightness of the inner and outer layers of the winding will be inconsistent. Therefore, calculating the pressure compensation amount according to the actual winding diameter of the fiber felt, and then obtaining the updated extrusion pressure and adjusting the pressures in the A chamber and the B chamber of the proportional valve can adjust the extrusion pressure in real time according to the change of the winding diameter, ensure the uniform tightness of the fiber felt during the whole winding process, and further improve the winding quality. Since the whole process of adjusting the extrusion pressure is automated, by obtaining parameters such as the winding line speed and the actual winding diameter, the extrusion pressure of the pressure roller is automatically calculated and adjusted. Therefore, manual intervention is reduced, the adjustment error caused by human factors is reduced, and the production efficiency is improved. At the same time, the automatic adjustment can respond to the changes during the winding process in real time, adjust the extrusion pressure in time, ensure the stability and reliability of the winding process, and thus reduce the impact on the mechanical properties and surface quality of the fiber felt. Description of the Drawings

[0023] Figure 1 is the first flowchart of the method embodiment of the present application; Figure 2 is the second flowchart of the method embodiment of the present application; Figure 3 is the third flowchart of the method embodiment of the present application; Figure 4 is the fourth flowchart of the method embodiment of the present application. Detailed Embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will combine the appended drawings in the embodiments of the present applicationFigure 1 - Attachment Figure 4 In order to clearly and completely describe the technical solutions in the embodiments of the present application, it is obvious that the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0025] The first embodiment of the present application discloses a method for adaptively adjusting the extrusion pressure for fiber felt winding. Referring to Figure 1 , as an implementation manner of the extrusion pressure adaptive adjustment method, the extrusion pressure adaptive adjustment method may include S110 - S170: S110, in the initial stage, obtain the winding linear speed of the fiber felt; S120, according to the set material parameters of the fiber felt and the winding linear speed, calculate the initial extrusion pressure of the pressure roller; S130, according to the initial extrusion pressure, adjust the pressures of the corresponding proportional valves in the A chamber and the B chamber of the cylinder; S140, in the winding stage, obtain the actual winding diameter of the fiber felt; S150, according to the actual winding diameter, calculate the pressure compensation amount; S160, according to the pressure compensation amount, obtain the updated extrusion pressure; S170, according to the updated extrusion pressure, adjust the pressures of the proportional valves in the A chamber and the B chamber.

[0026] Specifically, a linear speed sensor, such as a laser Doppler velocimeter, can be installed on the path of the fiber felt. The velocimeter measures the linear speed of the fiber felt by emitting a laser beam onto the surface of the fiber felt and according to the Doppler shift of the reflected light. The material parameters of the fiber felt include the tensile strength and the thickness of the material. The initial extrusion pressure is the safety factor, and the empirical value is 1.2 - 1.5; is the tensile strength of the material (MPa), is the thickness of the material (mm), and v is the winding linear speed (m / min).

[0027] The specific steps for obtaining the actual winding diameter of the fiber felt include: Obtain the cumulative number of rotations of the friction roller; According to the cumulative number of rotations, the initial diameter of the support roller, and the material parameters, calculate the actual winding diameter of the fiber felt.

[0028] The actual winding diameter , where is the diameter of the support roller, and n is the cumulative number of rotations of the friction roller, which can be obtained through an encoder installed on the friction roller.

[0029] where k = 0.3 N / mm - 0.8 N / mm, adjustable according to the compressibility of the material. .

[0030] Specifically for S130 and S170, the effective area of the cylinder can be calculated based on the cylinder diameter and rod diameter of the cylinder. Then, based on the actual extrusion pressure and the effective area, the air source pressure can be obtained, and based on the air source pressure, the pressures in the A and B chambers of the proportional valve can be obtained.

[0031] Specifically, the effective area of the cylinder is the cylinder diameter, is the cylinder rod diameter. The air source pressure , in the initial stage, P is the initial extrusion pressure, and in the winding stage, P is the calculated actual extrusion pressure.

[0032] Refer to Figure 2 , the specific steps to obtain the pressures in the A and B chambers of the proportional valve based on the air source pressure include S210 - S250: S210, in the stored historical extrusion pressure - working condition data table, search for the historical air source pressure similar to the air source pressure; S220, if there is only one historical air source pressure, extract the historical pressures in the A and B chambers of the proportional valve associated with this historical air source pressure; S230, if there are multiple historical air source pressures, calculate the average value of the multiple historical air source pressures; S240, search for the historical air source pressure in the historical extrusion pressure - working condition data table that is closest to the average value; S250, extract the historical pressures in the A and B chambers of the proportional valve associated with this historical air source pressure.

[0033] Specifically, comprehensively traverse the data table storing historical extrusion pressure - working condition data. The data table contains information such as historical gas source pressure, historical pressures of the A and B chambers of the proportional valve, and historical winding working conditions. During the traversal, compare each historical gas source pressure with the current gas source pressure to determine whether it is within the set difference range. If so, determine that the historical gas source pressure is similar to the current gas source pressure. When it is determined that only one historical gas source pressure meets the similarity condition, locate the record row where the historical gas source pressure is located in the data table. From the located record row, directly extract the historical pressures of the A and B chambers of the proportional valve associated with the historical gas source pressure as the actual pressures of the A and B chambers of the proportional valve corresponding to the current gas source pressure. Add up all the collected historical gas source pressure values and then divide by the number of these values to obtain the average value. Based on the calculated average value, traverse the historical extrusion pressure - working condition data table again. Calculate the difference between each historical gas source pressure in the data table and the average value, and record the absolute value of each difference. The historical gas source pressure with the smallest absolute difference value is the historical gas source pressure closest to the average value. Locate the record row corresponding to this historical gas source pressure in the data table. Extract the historical pressures of the A and B chambers of the proportional valve associated with this historical gas source pressure from the record row as the actual pressures of the A and B chambers of the proportional valve corresponding to the current gas source pressure.

[0034] Referring to Figure 3 , the steps after obtaining the updated extrusion pressure may include S310 - S370: S310, obtain the speed difference between the friction linear speed of the friction roller and the winding linear speed; S320, determine whether the absolute value of the speed difference is within the threshold range; S330, if not, when the speed difference is positive, obtain the corrected extrusion pressure according to the speed difference and the updated extrusion pressure; S340, adjust the pressures of the A and B chambers of the proportional valve according to the corrected extrusion pressure; S350, when the speed difference is negative, calculate the actual pressure value according to the absolute value of the speed difference; S360, adjust the pressures of the A and B chambers of the proportional valve according to the actual pressure value; S370, if so, adjust the pressures of the A and B chambers of the proportional valve according to the updated extrusion pressure.

[0035] Specifically, the corrected extrusion pressure is the linear speed of the friction roller.

[0036] The actual pressure value is an empirical value.

[0037] Furthermore, referring to Figure 4 , this extrusion pressure adaptive adjustment method further includes S410 - S430: S410. During the winding stage, determine whether the actual winding diameter is less than the set winding diameter limit threshold value; S420. If not, calculate the real-time pressure value based on the actual winding diameter, the winding diameter limit threshold value, and the set maximum winding diameter; S430. Adjust the pressures in the A chamber and B chamber of the proportional valve according to the real-time pressure value.

[0038] Specifically, the winding diameter limit threshold value can be set to 80% of the maximum winding diameter, and the maximum winding diameter can be the set target winding diameter value, that is, the winding diameter value required for winding the fiber felt.

[0039] Real-time pressure value Is the maximum winding diameter.

[0040] As another implementation manner of the extrusion pressure adaptive adjustment method, the extrusion pressure adaptive adjustment method may further perform the following steps: During the winding stage, obtain the pressure change rate in real time, and determine whether the pressure change rate drops suddenly. If so, control the pressure roller to reset at a speed of N mm / s and send a warning message; if not, send a prompt message.

[0041] Specifically, the ratio of the difference between the pressure data collected twice adjacent to each other to the time interval can be calculated to obtain the pressure change rate. For example, assume that the pressure collected at time t1 is P1 and the pressure collected at time t2 is P2. Then the pressure change rate ΔP / Δt = (P2 - P1) / (t2 - t1). According to the process requirements and historical experience of fiber felt winding, set the threshold value for sudden drop of the pressure change rate, and compare the pressure change rate calculated in real time with the set threshold value. When it is determined that the pressure change rate drops suddenly, a warning message can be sent by means of SMS, email, or audible and visual alarm, etc., and the air cylinder is controlled to contract at a speed of N mm / s. N is an empirical value and can be set to 10. When it is determined that the pressure change rate does not drop suddenly, a prompt message can be sent, and the prompt message can be displayed on the display screen or informed to the operator by means of voice broadcast for viewing during the current winding process.

[0042] Based on the above method embodiments, the second embodiment of the present application discloses an extrusion pressure adaptive adjustment system for fiber felt winding. The extrusion pressure adaptive adjustment system for fiber felt winding in the embodiments of the present application can implement any one of the above extrusion pressure adaptive adjustment methods for fiber felt winding, and the specific working processes of each module in the extrusion pressure adaptive adjustment system for fiber felt winding can refer to the corresponding processes in the above method embodiments.

[0043] For ease of understanding, the following is an example: An extrusion pressure adaptive adjustment system for fiber felt winding includes: A data acquisition module, configured to obtain the winding linear speed of fiber felt winding during the initial stage; A data processing module, configured to calculate an initial extrusion pressure of a pressure roller according to set material parameters of a fiber felt and a winding line speed. A control and adjustment module, configured to adjust pressures of a corresponding proportional valve in cavity A and cavity B of a cylinder according to the initial extrusion pressure. The data acquisition module is further configured to acquire an actual winding diameter of the fiber felt during a winding stage. The data processing module is further configured to calculate a pressure compensation amount according to the actual winding diameter, and obtain an updated extrusion pressure according to the pressure compensation amount. The control and adjustment module is further configured to adjust pressures of cavity A and cavity B of the proportional valve according to the updated extrusion pressure.

[0044] A third embodiment of the present application provides a terminal. As an implementation manner of the terminal, the terminal may include: a memory and a processor; wherein, The memory is configured to store an extrusion pressure adaptive adjustment program for fiber felt winding. The processor is configured to execute the program stored on the memory to implement steps of the above extrusion pressure adaptive adjustment method for fiber felt winding.

[0045] Wherein, the memory may be communicatively connected to the processor through a communication bus, and the communication bus may be an address bus, a data bus, a control bus, etc.

[0046] In addition, the memory may include a random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0047] And the processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0048] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application in turn. Any feature disclosed in this specification (including the abstract and drawings), unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example in a series of equivalent or similar features.

Claims

1. An extrusion pressure self - adaptive adjustment method for fiber felt winding, characterized in that It includes: In the initial stage, obtain the winding line speed of the fiber felt winding; According to the set material parameters of the fiber felt and the winding line speed, calculate the initial extrusion pressure of the pressure roller; According to the initial extrusion pressure, adjust the pressures of the corresponding proportional valves in the A chamber and B chamber of the cylinder; In the winding stage, obtain the actual winding diameter of the fiber felt winding; According to the actual winding diameter, calculate the pressure compensation amount; According to the pressure compensation amount, obtain the updated extrusion pressure; According to the updated extrusion pressure, adjust the pressures of the proportional valves in the A chamber and B chamber.

2. The extrusion pressure self-adaptive adjustment method for fiber felt winding according to claim 1, wherein, The specific steps for obtaining the actual winding diameter of the fiber felt winding include: Obtain the cumulative number of rotations of the friction roller; According to the cumulative number of rotations, the initial diameter of the support roller, and the material parameters, calculate the actual winding diameter of the fiber felt winding.

3. A method for adaptively adjusting the extrusion pressure for winding a fiber felt according to claim 1, characterized in that, The steps after obtaining the updated extrusion pressure include: Obtain the speed difference between the friction line speed of the friction roller and the winding line speed; Judge whether the absolute value of the speed difference is within the threshold range; If not, when the speed difference is positive, according to the speed difference and the updated extrusion pressure, obtain the corrected extrusion pressure; According to the corrected extrusion pressure, adjust the pressures of the proportional valves in the A chamber and B chamber; When the speed difference is negative, calculate the actual pressure value according to the absolute value of the speed difference; According to the actual pressure value, adjust the pressures of the proportional valves in the A chamber and B chamber; If so, according to the updated extrusion pressure, adjust the pressures of the proportional valves in the A chamber and B chamber.

4. A method for adaptively adjusting the extrusion pressure for fiber felt winding according to claim 1, characterized in that, The extrusion pressure adaptive adjustment method further includes: In the winding stage, judge whether the actual winding diameter reaches the set winding diameter limit threshold; If so, according to the actual winding diameter, the winding diameter limit threshold, and the set maximum winding diameter, calculate the real-time pressure value; According to the real-time pressure value, adjust the pressures of the proportional valves in the A chamber and B chamber.

5. A method for adaptively adjusting the extrusion pressure for fiber felt winding according to claim 1, characterized in that, The steps of adjusting the pressures of the proportional valves in the A chamber and B chamber according to the actual extrusion pressure in the initial stage or the winding stage include: According to the cylinder diameter and rod diameter of the cylinder, calculate the effective area of the cylinder; According to the actual extrusion pressure and the effective area, obtain the air source pressure; According to the air source pressure, obtain the pressures of the proportional valves in the A chamber and B chamber.

6. A method for adaptively adjusting the extrusion pressure for fiber felt winding according to claim 5, characterized in that, The steps of obtaining the pressures of the proportional valves in the A chamber and B chamber according to the air source pressure include: In the stored historical extrusion pressure - working condition data table, search for the historical air source pressure similar to the air source pressure; If there is only one historical air source pressure, extract the historical proportional valve A chamber and B chamber pressures associated with the historical air source pressure; If there are multiple historical air source pressures, calculate the average value of the multiple historical air source pressures; Search for the historical air source pressure closest to the average value in the historical extrusion pressure - working condition data table; Extract the historical proportional valve A chamber and B chamber pressures associated with the historical air source pressure.

7. A method for adaptively adjusting the extrusion pressure for winding a fiber mat according to claim 1, characterized in that, The extrusion pressure adaptive adjustment method further includes: In the winding stage, obtain the pressure change rate in real time; Judge whether the pressure change rate drops suddenly; If so, control the pressure roller to reset at a speed of Nmm / s and send a warning message.

8. An extrusion pressure self-adaptive adjustment system for fiber felt winding, characterized in that, Execute the extrusion pressure adaptive adjustment method for fiber felt winding as described in any one of claims 1 - 7, including: A data acquisition module, configured to acquire the winding line speed of the fiber felt winding in the initial stage; A data processing module, configured to calculate the initial extrusion pressure of the pressure roller according to the set material parameters of the fiber felt and the winding line speed; A control and adjustment module, configured to adjust the pressures of the A chamber and the B chamber of the proportional valve of the cylinder according to the initial extrusion pressure; The data acquisition module is further configured to acquire the actual winding diameter of the fiber felt winding in the winding stage, and the data processing module is further configured to calculate a pressure compensation amount according to the actual winding diameter, and obtain an updated extrusion pressure according to the pressure compensation amount; the control and adjustment module is further configured to adjust the pressures of the A chamber and the B chamber of the proportional valve according to the updated extrusion pressure.

9. A terminal, characterized in that, Comprising: A memory, storing an extrusion pressure adaptive adjustment program for fiber felt winding; A processor, configured to execute the program stored on the memory to implement the steps of the extrusion pressure adaptive adjustment method for fiber felt winding according to any one of claims 1-7.

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