Method and device for filtering and removing impurities from glue solution for processing carbon fiber composite materials

Abstract

The present invention provides a method and device for filtering and removing impurities from glue liquid for processing carbon fiber composite materials, belonging to the technical field of carbon fiber composite material production. The method comprises: when the carbon fiber composite material is impregnated with resin in a glue tank, the overflowing resin is discharged through an overflow port, and the overflowing resin is filtered based on a first filter screen and then flows into a glue barrel; after the impregnation is completed, the glue is squeezed, and the refluxed resin is filtered based on a second filter screen at the guide port of the reflux plate and collected into the glue barrel; the glue liquid in the glue barrel is circulated into the glue tank by a diaphragm pump; and according to the tracking results of the yarn hairiness and the monitoring results of the filter screen resin flow, staff are dispatched to clean the filter screen. The method and device for filtering and removing impurities from glue liquid for processing carbon fiber composite materials of the present invention controls the circulation of the glue liquid in the glue tank by a diaphragm pump, thereby improving the utilization efficiency of the resin. The yarn hairiness of the circulating colloid is filtered by the filter screen, and cleaning and warning are issued based on the tracking results and monitoring results of the yarn hairiness, thereby reducing the startup time and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fiber composite material production, and in particular to a method and device for filtering and removing impurities from glue solution used for processing carbon fiber composite materials. Background Art

[0002] Carbon fiber has high tensile strength, but it cannot withstand multi-directional stress when used alone. Therefore, it needs to be processed. During processing, resin is impregnated and cured to ensure that the resin evenly wraps the fiber and transmits stress.

[0003] Currently, resin is typically added manually to the glue tank. To facilitate glue addition, production lines often utilize larger glue tanks, resulting in excessive resin usage and low efficiency. Furthermore, traditional Teflon-based resin level control methods are difficult to manage. Furthermore, traditional processing methods allow untreated reflowing glue to flow back into the tank, creating feathery yarn in the tank that limits machine operation time and further reduces production efficiency.

[0004] In view of this, there is an urgent need for a method and device for filtering and removing impurities from glue solution used in carbon fiber composite material processing to at least solve the above-mentioned shortcomings. Summary of the Invention

[0005] One objective of the present invention is to provide a method and device for filtering and removing impurities from glue used in carbon fiber composite material processing. An overflow port is provided in the glue tank, and overflowing and returning resin is collected in a glue barrel. A diaphragm pump within the barrel controls the circulation of the glue within the tank, eliminating the need for manual glue replenishment and liquid level control. This improves resin utilization efficiency and is more intelligent. A filter is used to filter yarn hairiness during the glue circulation process, and cleaning and warning are issued based on the tracking and monitoring results of the yarn hairiness, reducing startup time and improving production efficiency.

[0006] The embodiment of the present invention provides a method for filtering and removing impurities from a glue solution for processing carbon fiber composite materials, comprising:

[0007] When the carbon fiber composite material is impregnated with resin in the glue tank, the overflowed resin is discharged through the overflow port preset in the glue tank, and the discharged overflowed resin is filtered by the first filter preset on the glue barrel and then flows into the glue barrel;

[0008] After the carbon fiber composite material is impregnated, the glue is squeezed out, and the reflux resin collected during the extrusion process is filtered through the second filter screen preset at the reflux plate guide port and collected into the glue barrel;

[0009] The glue liquid in the glue barrel is circulated into the glue tank through the diaphragm pump;

[0010] According to the tracking results of yarn hairiness and the monitoring results of filter resin flow, staff are dispatched to clean the filter.

[0011] Preferably, the glue groove is dimensioned by the material arrangement of the carbon fiber composite material.

[0012] Preferably, the step of impregnating the carbon fiber composite material with resin in the impregnation tank includes:

[0013] The upper carbon fiber composite material is pressed into the glue groove by a yarn pressing mechanism that matches the size of the glue groove.

[0014] Preferably, the diaphragm pump has power and gas flow regulation functions.

[0015] The method for filtering and removing impurities from glue solution for processing carbon fiber composite materials provided by an embodiment of the present invention further includes:

[0016] After the carbon fiber composite material processing is completed, the pump body and pipeline of the diaphragm pump are cleaned by circulating methylene chloride.

[0017] Preferably, the glue liquid in the glue barrel is circulated into the glue tank by a diaphragm pump, including:

[0018] Real-time detection of the first resin temperature and the first resin viscosity of the resin in the glue tank;

[0019] Preselecting a first control parameter of the diaphragm pump according to the first resin viscosity and a control parameter table of the diaphragm pump;

[0020] Extracting shear characteristics according to the first control parameter, the shear characteristics including: pipeline shear rate and inter-fiber bundle shear rate;

[0021] Determining a first temperature control instruction according to the shearing characteristics and the temperature adjustment model;

[0022] adjusting the temperature of the resin in the adhesive tank based on the first temperature control instruction, and determining a second resin temperature and a second resin viscosity of the resin in the adhesive tank after the temperature control;

[0023] Determining a second control parameter of the diaphragm pump according to the second resin viscosity and the control parameter table;

[0024] The diaphragm pump is controlled based on the second control parameter to circulate the glue liquid in the glue barrel into the glue tank.

[0025] Preferably, determining the second control parameter of the diaphragm pump according to the second resin viscosity and the control parameter table includes:

[0026] Determining preselected control parameters based on the second resin viscosity and the control parameter table;

[0027] Determine the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on preselected control parameters;

[0028] Calculating the third resin temperature according to the second resin temperature and the adhesive temperature fluctuation value;

[0029] Determine the preset operating temperature range for the resin type;

[0030] If the third resin temperature exceeds the operating temperature range, the corresponding preselected control parameter is eliminated, and the remaining preselected control parameter is used as the second control parameter.

[0031] Preferably, determining the temperature fluctuation value of the glue solution caused by controlling the diaphragm pump based on preselected control parameters includes:

[0032] Construct a three-dimensional model based on the three-dimensional parameters of the glue flowing through the device;

[0033] Based on the shear heating mechanism and mechanical friction heating mechanism, according to the preselected control parameters, glue parameters and three-dimensional model, the temperature rise distribution of the glue in the three-dimensional model is simulated;

[0034] The maximum value in the glue liquid temperature rise distribution is taken as the glue liquid temperature fluctuation value.

[0035] The method for filtering and removing impurities from glue solution for processing carbon fiber composite materials provided by an embodiment of the present invention further includes:

[0036] Obtaining control parameter changes corresponding to two adjacent second control parameters in time;

[0037] Based on the change of control parameters, draw the control parameter change curve;

[0038] Perform smoothness check on the control parameter change curve;

[0039] If the smoothness check fails, suspicious attribution is made based on the change factors;

[0040] The suspicious attribution is auxiliary verified according to the auxiliary verification strategy of the suspicious attribution, and the processing production line is handled accordingly according to the preset disposal method of the suspicious attribution that passes the auxiliary verification.

[0041] The embodiment of the present invention provides a glue filtering and impurity removal device for processing carbon fiber composite materials, comprising:

[0042] The first filtering module is used to guide the overflowed resin through the overflow port of the glue tank when the carbon fiber composite material is impregnated with the resin in the glue tank, and the guided overflowed resin is filtered by the first filter screen preset on the glue barrel and then flows into the glue barrel;

[0043] The second filtering module is used to squeeze out the glue after the carbon fiber composite material is impregnated. The reflow resin collected during the extrusion process is filtered through the second filter preset at the reflux plate guide port and collected into the glue barrel;

[0044] The circulation module is used to circulate the glue liquid in the glue barrel into the glue tank through a diaphragm pump;

[0045] The cleaning module is used to dispatch staff to clean the filter according to the tracking results of yarn hairiness and the monitoring results of filter resin flow.

[0046] The beneficial effects of the present invention are:

[0047] This invention incorporates an overflow port in the glue tank, collects overflowing and refluxed resin in a glue barrel, and controls the circulation of the glue liquid within the tank using a diaphragm pump within the barrel. This eliminates the need for manual glue replenishment and liquid level control, improving resin utilization efficiency and making the process more intelligent. A filter screen is used to filter yarn hairiness during the glue circulation process, and cleaning and early warning are issued based on yarn hairiness tracking and monitoring results, reducing startup time and improving production efficiency.

[0048] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in this application document.

[0049] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0051] Figure 1 Schematic diagram of a method for filtering and removing impurities from a glue solution used in processing carbon fiber composite materials according to an embodiment of the present invention;

[0052] Figure 2 Schematic diagram of a glue filtering and impurity removal device for processing carbon fiber composite materials in an embodiment of the present invention. DETAILED DESCRIPTION

[0053] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0054] The embodiment of the present invention provides a method for filtering and removing impurities from glue solution for processing carbon fiber composite materials, such as Figure 1 As shown, including:

[0055] Step 1: When the carbon fiber composite material is impregnated with resin in the glue tank, the overflowed resin is discharged through the overflow port preset in the glue tank, and the discharged overflowed resin is filtered through the first filter preset on the glue barrel and then flows into the glue barrel;

[0056] Among them, the glue groove is designed in size by arranging the material yarn of the carbon fiber composite material;

[0057] The step of impregnating the carbon fiber composite material with the resin in the adhesive tank includes: pressing the upper carbon fiber composite material into the adhesive tank by a yarn pressing mechanism that matches the size of the adhesive tank;

[0058] The carbon fiber composite material is a carbon fiber bundle; the preset overflow port is a safe discharge channel for the resin liquid level in the glue tank, which is arranged on one side of the longer edge of the glue tank. After the resin in the glue tank is discharged through the overflow port, it flows into the glue barrel through a pipe connected to the overflow port. The filter screen provided at the connection between the end of the pipe and the glue barrel is the first filter screen, which is used to filter out the hair and hairiness in the overflowed resin;

[0059] Step 2: After the carbon fiber composite material is impregnated, the glue is squeezed out. The reflux resin collected during the reflux process is filtered through the second filter screen preset at the reflux plate guide port and collected into the glue barrel;

[0060] Among them, after the carbon fiber composite material is impregnated with resin, excess colloid needs to be removed. The removed excess colloid can still be used for subsequent impregnation. The excess colloid is returned through the return plate below the glue squeezing device, which is inclined toward the glue tank. Finally, it flows through the guide port at the end of the inclined direction of the return plate, passes through the movable filter (second filter) installed on the return sub-tank, and then flows into the glue barrel through the return sub-tank. The return sub-tank and the glue barrel are also connected by a pipe.

[0061] Step 3: Use the diaphragm pump to circulate the glue liquid in the glue barrel into the glue tank;

[0062] Among them, the diaphragm pump is a positive displacement pump used to transport resin. The diaphragm pump has power and air flow adjustment functions. The specific adjustment parameters are determined according to the processing requirements.

[0063] Step 4: According to the tracking results of yarn hairiness and the monitoring results of filter resin flow, dispatch staff to clean the filter.

[0064] The yarn hairiness tracking result is an image of the adhesive solution containing yarn hairiness captured by an industrial camera. The filter resin flow monitoring result is the liquid flow detected by a flow meter preset below the filter. Dispatching staff to clean the filter means notifying staff to clean the filter when the tracking and monitoring results reach set values ​​(for example, if five hair fibers are tracked and the monitoring result is less than a preset flow threshold).

[0065] The glue filtering and impurity removal method for carbon fiber composite material processing also includes: after the carbon fiber composite material processing is completed, using dichloromethane to circulate and clean the pump body and pipeline of the diaphragm pump.

[0066] The working principle and beneficial effects of the above technical solution are:

[0067] This invention incorporates an overflow port in the glue tank, collects overflowing and refluxed resin in a glue barrel, and controls the circulation of the glue liquid within the tank using a diaphragm pump within the barrel. This eliminates the need for manual glue replenishment and liquid level control, improving resin utilization efficiency and making the process more intelligent. A filter screen is used to filter yarn hairiness during the glue circulation process, and cleaning and early warning are issued based on yarn hairiness tracking and monitoring results, reducing startup time and improving production efficiency.

[0068] In one embodiment, circulating the glue liquid in the glue barrel into the glue tank by a diaphragm pump includes:

[0069] Real-time detection of the first resin temperature and the first resin viscosity of the resin in the glue tank;

[0070] The first resin temperature is the real-time temperature of the resin in the adhesive tank (e.g., 45°C), measured by an online thermometer (e.g., a networked PT100 platinum resistance thermometer). The first resin viscosity is the real-time viscosity of the resin in the adhesive tank (e.g., 600 mPa·s), measured by an online rotational viscometer.

[0071] Preselecting a first control parameter of the diaphragm pump according to the first resin viscosity and a control parameter table of the diaphragm pump;

[0072] The control parameter table of the diaphragm pump is pre-set by the engineering personnel, which stores a one-to-one correspondence between the viscosity of the adhesive and the control parameters. The control parameters are the control parameters of the diaphragm pump, such as stroke frequency, maximum back pressure, etc. The pre-selected first control parameter is the control parameter based on which the control is prepared, which can be obtained by reading the table according to the viscosity of the first resin.

[0073] Extracting shear characteristics according to the first control parameter, the shear characteristics including: pipeline shear rate and inter-fiber bundle shear rate;

[0074] The shear characteristics include: pipeline shear rate and inter-fiber bundle shear rate. There is a maximum allowable shear rate for both the pipeline and the fiber bundle (for example, the pipeline shear rate safety threshold is 500 / s, and the inter-fiber bundle shear rate safety threshold is 1000 / s). Therefore, it is necessary to verify the shear characteristics corresponding to the first control parameter.

[0075] Determining a first temperature control instruction according to the shearing characteristics and the temperature adjustment model;

[0076] The higher the glue temperature and the lower the corresponding glue viscosity, the less obvious the shear effect. Therefore, an appropriate first temperature control command is matched based on the shear characteristics and the temperature control model. The temperature control model is an AI model that performs machine learning based on the shear rates of multiple labeled pipelines, the shear rates between fiber bundles, and the corresponding manual glue temperature control records. After temperature control adjustment based on the temperature control command output by the temperature control model (i.e., the first temperature control command), the new shear characteristics extracted based on the new control parameters determined by the new glue viscosity meet the specifications, that is, the shear rates between pipelines and fiber bundles are within the corresponding safety thresholds.

[0077] adjusting the temperature of the resin in the adhesive tank based on the first temperature control instruction, and determining a second resin temperature and a second resin viscosity of the resin in the adhesive tank after the temperature control;

[0078] The first temperature control instruction is a remote control instruction for the glue tank heating device; the second resin temperature is the temperature of the resin after the resin in the glue tank is heated based on the first temperature control instruction; the second resin viscosity is the viscosity of the resin after the resin in the glue tank is heated based on the first temperature control instruction;

[0079] Determining a second control parameter of the diaphragm pump according to the second resin viscosity and the control parameter table;

[0080] The second control parameter is: a control parameter of the diaphragm pump read from the control parameter table based on the viscosity of the second resin;

[0081] The diaphragm pump is controlled based on the second control parameter to circulate the glue liquid in the glue barrel into the glue tank.

[0082] The working principle and beneficial effects of the above technical solution are:

[0083] During the processing of carbon fiber composites, the shear rate directly affects the resin impregnation quality and fiber damage control, so it needs to be adaptively adjusted.

[0084] First, based on the first resin viscosity and a preset control parameter table of the diaphragm pump, a first control parameter is determined, and a shear effect parameter (shear characteristic) when pumping the glue liquid with the first resin viscosity based on the first control parameter is determined.

[0085] Generally, the higher the glue temperature and the lower the corresponding glue viscosity, the less pronounced the shear effect. Therefore, a temperature control model is introduced. This AI model is a machine learning model that learns a large number of annotated pipeline shear rates, shear rates between fiber bundles, and corresponding manual glue temperature control records. This model can learn to manually control the resin temperature when the shear rate exceeds a safe threshold. This allows the diaphragm pump to reduce the shear effect to a safe range when pumping the glue based on subsequently re-determined control parameters. The shear characteristics are input into the temperature control model to obtain the first temperature control instruction.

[0086] Finally, based on the first temperature control instruction, the temperature of the resin in the glue tank is adjusted to determine the second resin temperature and the second resin viscosity. Then, according to the newly determined second resin viscosity reading table, the second control parameter required to pump the glue liquid of the second resin viscosity into the glue tank is determined. Based on the second control parameter, the diaphragm pump is controlled to circulate the glue liquid in the glue barrel into the glue tank. When the glue liquid temperature is low, the glue liquid viscosity is high, and the shear effect is obvious, the system can adaptively heat the glue liquid and control the pumping, thereby reducing fiber damage and improving the resin impregnation quality.

[0087] In one embodiment, determining the second control parameter of the diaphragm pump according to the second resin viscosity and the control parameter table includes:

[0088] Determining preselected control parameters based on the second resin viscosity and the control parameter table;

[0089] The preselected control parameters are: all control parameters determined based on the second resin viscosity table reading, that is, all control parameters of the diaphragm pump that can pump the second resin viscosity into the glue tank and whose shear effect is within the safety threshold;

[0090] Determine the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on preselected control parameters;

[0091] Among them, controlling the diaphragm pump based on the preselected control parameters will bring additional heat. The change in glue liquid temperature caused by the additional heat is the glue liquid temperature fluctuation value, for example: +3°C;

[0092] Calculating the third resin temperature according to the second resin temperature and the adhesive temperature fluctuation value;

[0093] The third resin temperature is the sum of the second resin temperature and the adhesive temperature fluctuation value;

[0094] Determine the preset operating temperature range for the resin type;

[0095] The resin type is the type of glue resin, and the preset working temperature range is the temperature range for the ideal infiltration of this type of resin. For example, the preset working range of epoxy resin is 40°C-60°C. It will pre-cure when the temperature is above 65°C, and the infiltration effect is poor when the temperature is below 35°C.

[0096] If the third resin temperature exceeds the operating temperature range, the corresponding preselected control parameter is eliminated, and the remaining preselected control parameter is used as the second control parameter.

[0097] Here, the correspondence refers to the correspondence between the third resin temperature exceeding the operating temperature range and the preselected control parameter. The third resin temperature is calculated based on the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on the preselected control parameter, and the third resin temperature corresponds to the preselected control parameter.

[0098] The working principle and beneficial effects of the above technical solution are:

[0099] Although increasing the glue temperature can reduce the glue viscosity, the situation will change as the glue temperature rises further. For example, the viscosity of epoxy resin decreases as the temperature rises within the temperature range of 40℃-60℃. However, when the temperature reaches 65℃, "pre-curing" will occur. Pre-curing is an irreversible chemical process of the resin, which will directly lead to a sudden drop in the fluidity of the resin and glue accumulation on the inner wall of the mold, affecting production. Therefore, in the process of glue temperature adjustment, in order to achieve a dynamic balance between reducing the shear effect and avoiding the risk of pre-curing, the effect of the heat generated by the diaphragm pump on the glue should be considered. In order to solve the impact brought by the temperature fluctuation of the glue liquid caused by the diaphragm pump, the embodiment of the present invention first determines the preselected control parameters according to the second resin viscosity and the control parameter table, and calculates the third resin temperature based on the temperature fluctuation value of the glue liquid caused by the preselected control parameters and the second resin temperature. When the third resin temperature exceeds the preset working temperature range of the resin type, the corresponding preselected control parameters are eliminated, and the remaining preselected control parameters are used as the second control parameters. The present invention takes into account the interference of the heat generated by the diaphragm pump itself on the glue liquid, improves the accuracy of the glue liquid pre-curing risk judgment, improves the rationality of the second control parameter screening, and further reduces the glue liquid pre-curing risk.

[0100] In one embodiment, determining the temperature fluctuation value of the glue solution caused by controlling the diaphragm pump based on preselected control parameters includes:

[0101] Construct a three-dimensional model based on the three-dimensional parameters of the glue flowing through the device;

[0102] The glue liquid flow device includes: a glue tank, a diaphragm pump, a connecting pipe between the glue tank and the diaphragm pump, a first filter screen, a reflux plate, a second filter screen, a reflux auxiliary tank, and a connecting pipe between the reflux auxiliary tank and the diaphragm pump. The three-dimensional parameters are the three-dimensional dimensions of the glue liquid flow device.

[0103] Based on the shear heating mechanism and mechanical friction heating mechanism, according to the preselected control parameters, glue parameters and three-dimensional model, the temperature rise distribution of the glue in the three-dimensional model is simulated;

[0104] The glue parameters are: resin type, resin amount, resin viscosity and temperature; the glue temperature rise distribution is: the temperature rise distribution of different model points of the three-dimensional model after simulation based on the shear heating mechanism and mechanical friction heating mechanism;

[0105] The maximum value in the glue liquid temperature rise distribution is taken as the glue liquid temperature fluctuation value.

[0106] The working principle and beneficial effects of the above technical solution are:

[0107] Since when the diaphragm pump is controlled based on preselected control parameters, the locations of frictional heat generation are different, and the shear heating caused by different shear rates at different glue locations is different. Therefore, the heat generated at different glue distribution locations is different, and the resulting temperature rise results are also different. Therefore, a three-dimensional model is constructed based on the three-dimensional parameters of the glue flowing through the device, and the shear heating mechanism and mechanical friction heating mechanism are introduced. According to the preselected control parameters, glue parameters and three-dimensional model, the glue temperature rise distribution in the three-dimensional model is simulated, and the maximum value is selected as the glue temperature fluctuation value for subsequent comparison with the critical temperature value of pre-curing, which further improves the accuracy of pre-curing risk judgment.

[0108] An embodiment of the present invention provides a method for filtering and removing impurities from a glue solution for processing carbon fiber composite materials, further comprising:

[0109] Obtaining control parameter changes corresponding to two adjacent second control parameters in time;

[0110] Wherein, the term "corresponding to each other in time" means that the control times of the second control parameters are adjacent to each other after being sorted in chronological order, and the change of the control parameter is the change amount of the control parameter, for example, the ratio of the increment of the stroke frequency to the previous stroke frequency in the pairwise adjacent second control parameters, and the ratio of the increment of the resin volume delivered per stroke to the previous resin volume delivered per stroke in the pairwise adjacent second control parameters;

[0111] Based on the change of control parameters, draw the control parameter change curve;

[0112] When drawing the control parameter change curve, the curve is drawn with time as the horizontal axis and different types of control parameter changes as the vertical axis, and the control time of the second control parameter that is relatively close to the current time among the two adjacent second control parameters is selected as the corresponding change time;

[0113] Perform smoothness check on the control parameter change curve;

[0114] Smoothness verification refers to image detection of the control parameter change curve to determine whether the control parameter change curve is smooth. If it is not smooth (for example, a sudden change occurs at a certain point on the curve), it indicates that the corresponding control process is abnormal and requires attribution.

[0115] If the smoothness check fails, suspicious attribution is made based on the change factors;

[0116] Among them, the change factor is the change amount of the control parameter that fails the smoothness check at the same moment. For example, if the smoothness check of the stroke frequency change curve and the resin volume change curve per stroke at a certain moment both fail, then the change factor is: the ratio of the stroke frequency increment at that moment to the previous stroke frequency, and the ratio of the resin volume increment per stroke at that moment to the resin volume per stroke per stroke before. When performing suspicious attribution, the change factor is input into the suspicious attribution model. The suspicious attribution model is an AI model trained based on manual attribution records of the mutation amount of different types of control parameters and the attribution results of abnormalities in the carbon fiber composite material processing process. It can perform abnormal attribution prediction based on different change factors. Suspicious attribution is the abnormal attribution predicted by the suspicious attribution model based on the change factor, such as insufficient glue in the glue barrel.

[0117] The suspicious attribution is auxiliary verified according to the auxiliary verification strategy of the suspicious attribution, and the processing production line is handled accordingly according to the preset disposal method of the suspicious attribution that passes the auxiliary verification.

[0118] Among them, the auxiliary verification strategy for suspicious attribution is preset manually. For example: if the suspicious attribution is insufficient glue in the glue barrel, the auxiliary verification strategy is: obtain the time of the last addition of resin. If the time interval between the time of the last addition of resin and the attribution time corresponding to the suspicious attribution is unreasonable (for example: resin was just added half an hour ago), the auxiliary verification of the suspicious attribution fails, otherwise it succeeds; the preset disposal method for the suspicious attribution is preset manually. For example: if the suspicious attribution that passes the auxiliary verification is insufficient glue in the glue barrel, the preset disposal method for the suspicious attribution is to dispatch on-site staff to add resin.

[0119] The working principle and beneficial effects of the above technical solution are:

[0120] Generally, when the processing of carbon fiber composite materials is relatively stable, its control parameters will not mutate. If a mutation occurs, it often implies that there is an abnormality in the processing process, so further attribution is needed.

[0121] When attributing, a control parameter change curve is drawn based on the control parameter changes corresponding to the second control parameters that are adjacent to each other in time. The horizontal axis of the control parameter change curve is time, and the vertical axis is the different types of control parameter changes. Different types of control parameter change curves are checked for smoothness to determine the sudden change factors. A suspicious attribution model is introduced to collaboratively attribute the change factors at the same time to determine the suspicious attribution. According to the auxiliary verification strategy of the suspicious attribution, corresponding auxiliary verification is performed. When the auxiliary verification passes, the processing production line is handled accordingly according to the preset disposal method of the suspicious attribution. The system automatically draws the control parameter change curve according to the control parameter changes and performs image detection to detect the change factors, and then connects to the suspicious attribution model to collaboratively obtain the suspicious attribution. Furthermore, the suspicious attribution is auxiliary verified, which greatly improves the attribution accuracy and is more intelligent.

[0122] The embodiment of the present invention provides a glue filtering and impurity removal device for processing carbon fiber composite materials, such as Figure 2 As shown, including:

[0123] The first filtering module 1 is used to guide the overflowed resin through the overflow port of the glue tank when the carbon fiber composite material is impregnated with the resin in the glue tank. The guided overflowed resin is filtered by the first filter screen preset on the glue barrel and then flows into the glue barrel;

[0124] The second filtering module 2 is used to squeeze out the glue after the carbon fiber composite material is impregnated. The reflow resin collected during the squeezing process is filtered through the second filter preset at the guide port of the reflow plate and collected into the glue barrel;

[0125] Circulation module 3, used to circulate the glue liquid in the glue barrel into the glue tank through a diaphragm pump;

[0126] Cleaning module 4, used to dispatch staff to clean the filter according to the tracking results of yarn hairiness and the monitoring results of filter resin flow;

[0127] The circulation module circulates the glue liquid in the glue barrel into the glue tank through a diaphragm pump, including:

[0128] Real-time detection of the first resin temperature and the first resin viscosity of the resin in the glue tank;

[0129] Preselecting a first control parameter of the diaphragm pump according to the first resin viscosity and a control parameter table of the diaphragm pump;

[0130] Extracting shear characteristics according to the first control parameter, the shear characteristics including: pipeline shear rate and inter-fiber bundle shear rate;

[0131] Determining a first temperature control instruction according to the shearing characteristics and the temperature adjustment model;

[0132] adjusting the temperature of the resin in the adhesive tank based on the first temperature control instruction, and determining a second resin temperature and a second resin viscosity of the resin in the adhesive tank after the temperature control;

[0133] Determining a second control parameter of the diaphragm pump according to the second resin viscosity and the control parameter table;

[0134] Based on the second control parameter, the diaphragm pump is controlled to circulate the glue liquid in the glue barrel into the glue tank;

[0135] Wherein, according to the second resin viscosity and the control parameter table, the second control parameter of the diaphragm pump is determined, including:

[0136] Determining preselected control parameters based on the second resin viscosity and the control parameter table;

[0137] Determine the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on preselected control parameters;

[0138] Calculating the third resin temperature according to the second resin temperature and the adhesive temperature fluctuation value;

[0139] Determine the preset operating temperature range for the resin type;

[0140] If the third resin temperature exceeds the operating temperature range, the corresponding preselected control parameter is eliminated, and the remaining preselected control parameter is used as the second control parameter;

[0141] Among them, determining the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on the preselected control parameters includes:

[0142] Construct a three-dimensional model based on the three-dimensional parameters of the glue flowing through the device;

[0143] Based on the shear heating mechanism and mechanical friction heating mechanism, according to the preselected control parameters, glue parameters and three-dimensional model, the temperature rise distribution of the glue in the three-dimensional model is simulated;

[0144] The maximum value in the glue liquid temperature rise distribution is taken as the glue liquid temperature fluctuation value;

[0145] Obtaining control parameter changes corresponding to two adjacent second control parameters in time;

[0146] Based on the change of control parameters, draw the control parameter change curve;

[0147] Perform smoothness check on the control parameter change curve;

[0148] If the smoothness check fails, suspicious attribution is made based on the change factors;

[0149] The suspicious attribution is auxiliary verified according to the auxiliary verification strategy of the suspicious attribution, and the processing production line is handled accordingly according to the preset disposal method of the suspicious attribution that passes the auxiliary verification.

[0150] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for filtering and removing impurities from a glue solution for processing carbon fiber composite materials, characterized in that: include: When the carbon fiber composite material is impregnated with resin in the glue tank, the overflowed resin is discharged through the overflow port preset in the glue tank, and the discharged overflowed resin is filtered by the first filter preset on the glue barrel and then flows into the glue barrel; After the carbon fiber composite material is impregnated, the glue is squeezed out, and the reflux resin collected during the extrusion process is filtered through the second filter screen preset at the reflux plate guide port and collected into the glue barrel; The glue liquid in the glue barrel is circulated into the glue tank through the diaphragm pump; According to the tracking results of yarn hairiness and the monitoring results of filter resin flow, the staff will be dispatched to clean the filter; Among them, the glue liquid in the glue barrel is circulated into the glue tank through a diaphragm pump, including: Real-time detection of the first resin temperature and the first resin viscosity of the resin in the glue tank; Preselecting a first control parameter of the diaphragm pump according to the first resin viscosity and a control parameter table of the diaphragm pump; Extracting shear characteristics according to the first control parameter, the shear characteristics including: pipeline shear rate and inter-fiber bundle shear rate; Determining a first temperature control instruction according to the shearing characteristics and the temperature adjustment model; adjusting the temperature of the resin in the adhesive tank based on the first temperature control instruction, and determining a second resin temperature and a second resin viscosity of the resin in the adhesive tank after the temperature control; Determining a second control parameter of the diaphragm pump according to the second resin viscosity and the control parameter table; Based on the second control parameter, the diaphragm pump is controlled to circulate the glue liquid in the glue barrel into the glue tank; Wherein, according to the second resin viscosity and the control parameter table, the second control parameter of the diaphragm pump is determined, including: Determining preselected control parameters based on the second resin viscosity and the control parameter table; Determine the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on preselected control parameters; Calculating the third resin temperature according to the second resin temperature and the adhesive temperature fluctuation value; Determine the preset operating temperature range for the resin type; If the third resin temperature exceeds the operating temperature range, the corresponding preselected control parameter is eliminated, and the remaining preselected control parameter is used as the second control parameter; Among them, determining the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on the preselected control parameters includes: Construct a three-dimensional model based on the three-dimensional parameters of the glue flowing through the device; Based on the shear heating mechanism and mechanical friction heating mechanism, according to the preselected control parameters, glue parameters and three-dimensional model, the temperature rise distribution of the glue in the three-dimensional model is simulated; The maximum value in the glue liquid temperature rise distribution is taken as the glue liquid temperature fluctuation value.

2. The method for filtering and removing impurities from glue solution for processing carbon fiber composite materials according to claim 1, wherein: The glue groove is dimensioned by the material arrangement of the carbon fiber composite material.

3. The method for filtering and removing impurities from glue solution for processing carbon fiber composite materials according to claim 1, wherein: The steps of impregnating the carbon fiber composite material with resin in the impregnation tank include: The upper carbon fiber composite material is pressed into the glue groove by a yarn pressing mechanism that matches the size of the glue groove.

4. The method for filtering and removing impurities from glue solution for processing carbon fiber composite materials according to claim 1, wherein: The diaphragm pump has power and gas flow adjustment functions.

5. The method for filtering and removing impurities from glue solution for processing carbon fiber composite materials according to claim 1, wherein: Also includes: After the carbon fiber composite material processing is completed, the pump body and pipeline of the diaphragm pump are cleaned by circulating methylene chloride.

6. The method for filtering and removing impurities from glue solution for processing carbon fiber composite materials according to claim 1, wherein: Also includes: Obtaining control parameter changes corresponding to two adjacent second control parameters in time; Based on the change of control parameters, draw the control parameter change curve; Perform smoothness check on the control parameter change curve; If the smoothness check fails, suspicious attribution is made based on the change factors; The suspicious attribution is auxiliary verified according to the auxiliary verification strategy of the suspicious attribution, and the processing production line is handled accordingly according to the preset disposal method of the suspicious attribution that passes the auxiliary verification.

7. A glue filtering and impurity removal device for processing carbon fiber composite materials, characterized in that: include: The first filtering module is used to guide the overflowed resin through the overflow port of the glue tank when the carbon fiber composite material is impregnated with the resin in the glue tank, and the guided overflowed resin is filtered by the first filter screen preset on the glue barrel and then flows into the glue barrel; The second filtering module is used to squeeze out the glue after the carbon fiber composite material is impregnated. The reflow resin collected during the extrusion process is filtered through the second filter preset at the guide port of the reflow plate and collected into the glue barrel; The circulation module is used to circulate the glue liquid in the glue barrel into the glue tank through a diaphragm pump; The cleaning module is used to dispatch staff to clean the filter according to the tracking results of yarn hairiness and the monitoring results of filter resin flow; The circulation module circulates the glue liquid in the glue barrel into the glue tank through a diaphragm pump, including: Real-time detection of the first resin temperature and the first resin viscosity of the resin in the glue tank; Preselecting a first control parameter of the diaphragm pump according to the first resin viscosity and a control parameter table of the diaphragm pump; Extracting shear characteristics according to the first control parameter, the shear characteristics including: pipeline shear rate and inter-fiber bundle shear rate; Determining a first temperature control instruction according to the shearing characteristics and the temperature adjustment model; adjusting the temperature of the resin in the adhesive tank based on the first temperature control instruction, and determining a second resin temperature and a second resin viscosity of the resin in the adhesive tank after the temperature control; Determining a second control parameter of the diaphragm pump according to the second resin viscosity and the control parameter table; Based on the second control parameter, the diaphragm pump is controlled to circulate the glue liquid in the glue barrel into the glue tank; Wherein, according to the second resin viscosity and the control parameter table, the second control parameter of the diaphragm pump is determined, including: Determining preselected control parameters based on the second resin viscosity and the control parameter table; Determine the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on preselected control parameters; Calculating the third resin temperature according to the second resin temperature and the adhesive temperature fluctuation value; Determine the preset operating temperature range for the resin type; If the third resin temperature exceeds the operating temperature range, the corresponding preselected control parameter is eliminated, and the remaining preselected control parameter is used as the second control parameter; Among them, determining the temperature fluctuation value of the glue liquid caused by controlling the diaphragm pump based on the preselected control parameters includes: Construct a three-dimensional model based on the three-dimensional parameters of the glue flowing through the device; Based on the shear heating mechanism and mechanical friction heating mechanism, according to the preselected control parameters, glue parameters and three-dimensional model, the temperature rise distribution of the glue in the three-dimensional model is simulated; The maximum value in the glue liquid temperature rise distribution is taken as the glue liquid temperature fluctuation value.

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