A method for manufacturing multi-ear end caps for dust collector filter cartridges with a sealing and enhanced structure

Abstract

This invention relates to the field of dust collector filter technology, and more particularly to a method for manufacturing a multi-ear end cap for a dust collector filter with a sealing and reinforcing structure. The method includes: obtaining a modified polymer substrate mixture and a sealing and reinforcing dry mix; mixing them to obtain a sealing and reinforcing polymer melt; injecting the melt into a first injection mold to obtain the end cap inner core; heating the melt and then transferring it into a second injection mold; covering the melt with a high-elasticity sealing material to form a sealing structure, thus obtaining the target multi-ear end cap; taking test samples from the end cap to determine the sealing bond strength characteristic value and preliminarily judging whether it meets the standard. If it meets the standard, it is verified based on the sealing defect characteristic value; if it does not meet the standard, the cause is determined based on the structural deviation characteristic value. This invention overcomes the problem of poor compressive and deformation resistance of the single-layer structure of dust collector filter end caps in traditional technology. By forming a composite structure of the inner core and the sealing layer through a double-layer injection molding process, the sealing reliability and structural stability of the end cap are improved.

Description

Technical Field

[0001] This invention relates to the field of dust collector filter technology, and in particular to a method for manufacturing a multi-ear end cap for a dust collector filter with a sealing enhancement structure. Background Technology

[0002] Traditional dust collector filter end cap designs mostly employ a single-layer structure. This single-layer structure reveals numerous problems when facing complex operating environments. In terms of pressure and deformation resistance, the single-layer structure, due to the uniformity of materials and structure, lacks sufficient buffering and support when subjected to significant pressure or external impact. For example, in some industrial production scenarios, dust collection equipment may be affected by mechanical vibration, pressure generated by material accumulation, etc., making single-layer end caps prone to deformation and cracking, thus affecting the normal use of the dust collector filter and shortening its service life. Sealing performance is one of the key performance indicators of dust collector filter end caps. Traditional single-layer end caps have significant shortcomings in sealing. On the one hand, the sealing performance of a single-layer material is limited, making it difficult to effectively prevent the leakage of dust, gas, etc. In industrial dust collection processes, if the end cap is not properly sealed, unfiltered dust-laden gas will leak into the surrounding environment, not only polluting the working environment but also potentially harming the health of operators. On the other hand, when traditional end caps are connected to the filter element body and assembled with other components, gaps are prone to appear at the sealing joint. Moreover, during long-term use, due to factors such as thermal expansion and contraction of materials and vibration, the sealing performance will further decline, making it unable to meet increasingly stringent environmental protection and production requirements.

[0003] While some dual-layer dust filter end caps are available on the market, these products still have design and manufacturing issues. Some dual-layer end caps simply stack two materials together without adequately considering the bonding strength and synergistic performance between them. This leads to delamination and peeling during actual use, failing to improve the overall performance of the end cap and instead reducing its reliability and stability.

[0004] Furthermore, the existing double-layer end caps do not adequately address the sealing reinforcement structure during manufacturing. Issues such as uneven coating of the sealing layer, air bubbles, or interface defects between the sealing layer and the inner core may arise, severely impacting the end cap's sealing performance. Moreover, the lack of effective quality inspection and control measures during manufacturing makes it difficult to promptly detect and resolve sealing defects, resulting in inconsistent product quality. Summary of the Invention

[0005] Therefore, the present invention provides a method for manufacturing a multi-ear end cap for a dust collector filter element with a sealing and enhanced structure, in order to overcome the problem of poor pressure resistance and deformation resistance of the single-layer structure of the end cap for dust collector filters in the prior art.

[0006] To achieve the above objectives, the present invention provides a method for manufacturing a multi-ear end cap for a dust collector filter element with a sealing and enhanced structure, comprising:

[0007] Step S1: Obtain the modified polymer matrix mixture and the sealing and reinforcing dry mix, respectively;

[0008] Step S2: The modified polymer matrix mixture and the sealing and reinforcing dry mix are placed into a mixing device to obtain a sealing and reinforcing polymer melt;

[0009] Step S3: Place the sealing and reinforcing polymer melt into the first injection mold to obtain the end cap core;

[0010] Step S4: After heating the end cap inner core to a preset temperature, send it into the second injection mold, use a high elastic sealing material to cover the end cap inner core to form a sealing structure, and cool and shape it to obtain the target multi-ear end cap.

[0011] Step S5: Cut several test samples from the target multi-ear end cap, obtain the bonding force information between the sealing layer and the inner core of the sample, so as to obtain the sealing bonding strength characteristic value, and preliminarily determine whether the manufacturing of the target multi-ear end cap meets the preset standard based on the sealing bonding strength characteristic value.

[0012] Step S6a: In response to the preliminary determination that the manufacturing of the target multi-ear end cap meets the preset standard, the manufacturing of the target multi-ear end cap is verified according to the sealing defect feature value; the sealing defect feature value is obtained by acquiring the sample sealing surface size information;

[0013] Step S6b: In response to the preliminary determination that the manufacturing of the target multi-ear end cap does not meet the preset standard, the reason why the manufacturing of the target multi-ear end cap does not meet the preset standard is determined based on the structural deviation feature value; the structural deviation feature value is obtained by acquiring the ear structure size information of the end cap.

[0014] Furthermore, in response to the sealing bond strength characteristic value being less than a preset sealing bond strength threshold, it is preliminarily determined that the manufacturing of the target multi-ear end cap does not meet the preset standard;

[0015] When the characteristic value of the sealing bond strength is greater than or equal to the preset sealing bond strength threshold, it is preliminarily determined that the manufacturing of the target multi-ear end cap meets the preset standard.

[0016] Furthermore, the sealing bond strength characteristic value is the ratio between the average bonding force between the sealing layer and the inner core of the end cap of each sample and the preset sealing bond force.

[0017] Furthermore, in response to the sealing defect characteristic value being less than a preset sealing defect threshold, the manufacturing of the target multi-ear end cap is verified to meet a preset standard.

[0018] Furthermore, in response to the sealing defect characteristic value being greater than or equal to a preset sealing defect threshold, the manufacturing of the target multi-ear end cap is verified to be non-compliant with a preset standard, and the preset temperature for heating the inner core of the next batch of end caps is increased based on the difference between the preset sealing bond strength threshold and the sealing bond strength characteristic value.

[0019] Furthermore, the sealing defect characteristic value is the ratio of the standard deviation of the flatness of the sealing surface of each sample to the sealing flatness threshold; the flatness of the sealing surface is the vertical distance between the highest and lowest points of the sealing surface.

[0020] Furthermore, the increase in the preset temperature of the end cap inner core heating in the next batch is positively correlated with the difference between the preset sealing strength threshold and the sealing strength characteristic value.

[0021] Furthermore, based on the structural deviation characteristic values, the reasons why the manufacturing of the target multi-ear end cap does not meet the preset standards are determined, wherein...

[0022] If the structural deviation characteristic value is less than the preset structural deviation threshold, it is determined that the reason why the manufacturing of the target multi-ear end cap does not meet the preset standard is that the temperature of the mixing device is not up to standard.

[0023] If the structural deviation characteristic value is greater than or equal to the preset structural deviation threshold, it is determined that the reason why the manufacturing of the target multi-ear end cap does not meet the preset standard is that the cooling rate of the sealing layer is not up to standard.

[0024] The structural deviation characteristic value is the ratio of the mean deviation of the ear structure size to the ear size threshold.

[0025] Furthermore, in response to the mixing unit temperature not meeting the standard, the temperature of the next batch of mixing units is reduced according to the difference between the preset structural deviation threshold and the structural deviation characteristic value.

[0026] Furthermore, the decrease in temperature of the mixing device in the next batch is positively correlated with the difference between the preset structural deviation threshold and the structural deviation characteristic value.

[0027] Furthermore, in response to the sealing layer cooling rate failing to meet the standard, the cooling rate of the next batch of sealing layers is reduced based on the difference between the structural deviation characteristic value and the preset structural deviation threshold.

[0028] Furthermore, the reduction in the cooling rate of the sealing layer in the next batch is positively correlated with the difference between the structural deviation characteristic value and the preset structural deviation threshold.

[0029] Compared with existing technologies, the advantages of this invention are as follows: This invention prepares a sealing-reinforcing polymer melt by using a modified polymer matrix mixture and a dry-mixed sealing-reinforcing material, and then forms the end cap core using an injection molding process. Under specific heating conditions, the core is coated with a highly elastic sealing material to form a complete sealing structure. This method significantly improves the overall compressive strength, deformation resistance, and sealing performance of the end cap, enabling it to exhibit excellent reliability and durability in practical applications.

[0030] Furthermore, the modified polymer matrix mixture, as the main raw material of the inner core, endows the inner core with excellent mechanical strength and structural stability. This characteristic enables the inner core to effectively resist external mechanical vibration and pressure impact when facing complex working conditions, avoiding deformation or cracking due to long-term stress. At the same time, the highly elastic sealing material is tightly bonded to the inner core through a precise encapsulation process, further enhancing the overall sealing effect. This design effectively prevents the leakage of dust particles and gas, ensuring that the end cap maintains high-efficiency sealing performance even in harsh environments.

[0031] Furthermore, to further improve the consistency and stability of product quality, this invention introduces a multi-dimensional quality inspection and feedback mechanism. This mechanism, through comprehensive judgment of the characteristic values ​​of sealing bond strength, sealing defect characteristics, and structural deviation characteristics, can accurately identify potential problems in the manufacturing process. For example, when preliminary inspection results show that the product does not meet standards, the specific data of the structural deviation characteristic value can be used to quickly determine whether the problem is caused by excessively high mixing unit temperature or excessively rapid cooling rate of the sealing layer. For different causes, process parameters can be optimized and adjusted by lowering the mixing temperature or appropriately reducing the cooling rate, thereby effectively resolving potential defects and ensuring that the final product quality meets the expected requirements.

[0032] Furthermore, regarding sealing performance, this invention not only focuses on improving the tightness of the bond between the sealing layer and the inner core, but also pays special attention to its long-term durability. Through comprehensive testing of sealing defects and rigorous verification of bonding strength, problems such as delamination and peeling, common in traditional double-layer end cap structures, can be effectively avoided. These problems often lead to a decline in sealing performance and even affect the normal operation of the entire device. This invention, through optimized material selection and process design, successfully overcomes these drawbacks, significantly extending the service life of the dust collector filter element while meeting stringent environmental and production requirements. Attached Figure Description

[0033] Figure 1 This is a flowchart illustrating the manufacturing method of a multi-ear end cap for a dust collector filter element with a sealing and enhanced structure, according to an embodiment of the present invention.

[0034] Figure 2This invention provides a flowchart for a preliminary determination of whether the manufacturing of the target multi-ear end cap conforms to a preset standard based on the characteristic value of the sealing bond strength.

[0035] Figure 3 This is a flowchart illustrating the process of verifying whether the manufacturing of the target multi-ear end cap conforms to a preset standard based on the characteristic values ​​of sealing defects, as described in this embodiment of the invention.

[0036] Figure 4 This is a flowchart illustrating the reasons why the manufacturing of the target multi-ear end cap does not meet the preset standard based on the structural deviation characteristic value, according to an embodiment of the present invention. Detailed Implementation

[0037] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0038] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0039] Please see Figure 1-4 The following are flowcharts respectively: a flowchart of the manufacturing method of the multi-ear end cap of the dust filter element with sealing enhancement structure according to an embodiment of the present invention; a flowchart of the preliminary determination of whether the manufacturing of the target multi-ear end cap meets the preset standard based on the sealing bonding strength characteristic value according to an embodiment of the present invention; a flowchart of the verification of whether the manufacturing of the target multi-ear end cap meets the preset standard based on the sealing defect characteristic value according to an embodiment of the present invention; and a flowchart of the determination of the reason why the manufacturing of the target multi-ear end cap does not meet the preset standard based on the structural deviation characteristic value according to an embodiment of the present invention.

[0040] This invention provides a method for manufacturing a multi-ear end cap for a dust collector filter element with a sealing enhancement structure, comprising:

[0041] Step S1: Obtain the modified polymer matrix mixture and the sealing and reinforcing dry mix, respectively;

[0042] Step S2: The modified polymer matrix mixture and the sealing and reinforcing dry mix are placed into a mixing device to obtain a sealing and reinforcing polymer melt;

[0043] Step S3: Place the sealing and reinforcing polymer melt into the first injection mold to obtain the end cap core;

[0044] Step S4: After heating the end cap inner core to a preset temperature, send it into the second injection mold, use a high elastic sealing material to cover the end cap inner core to form a sealing structure, and cool and shape it to obtain the target multi-ear end cap.

[0045] Step S5: Cut several test samples from the target multi-ear end cap, obtain the bonding force information between the sealing layer and the inner core of the sample, so as to obtain the sealing bonding strength characteristic value, and preliminarily determine whether the manufacturing of the target multi-ear end cap meets the preset standard based on the sealing bonding strength characteristic value.

[0046] Step S6a: In response to the preliminary determination that the manufacturing of the target multi-ear end cap meets the preset standard, the manufacturing of the target multi-ear end cap is verified according to the sealing defect feature value; the sealing defect feature value is obtained by acquiring the sample sealing surface size information;

[0047] Step S6b: In response to the preliminary determination that the manufacturing of the target multi-ear end cap does not meet the preset standard, the reason why the manufacturing of the target multi-ear end cap does not meet the preset standard is determined based on the structural deviation feature value; the structural deviation feature value is obtained by acquiring the ear structure size information of the end cap.

[0048] Specifically, the modified polymer matrix mixture uses a composite material of polypropylene and polytetrafluoroethylene, which possesses both good mechanical properties and chemical stability; the sealing and reinforcing dry mix uses a mixture of nano-silica and silane coupling agent in a 19:1 ratio, which can effectively improve the adhesive strength of the sealing layer; the preset temperature is set to 180±5℃, preferably 180℃, which ensures that the sealing and reinforcing dry mix undergoes a grafting reaction without decomposition; the cooling rate is set to 15℃ / min, which allows the sealing layer to quickly solidify and coat the end cap core while reducing internal stress. In step S5, the bonding force information is obtained by tensile testing using a universal testing machine, with the test sample size being a standard specimen of 50mm×10mm; in step S6a, the sealing surface dimension information is obtained by three-dimensional scanning using an image measuring instrument, and the sealing defect characteristic value is obtained by calculating the flatness and roughness of the sealing surface; in step S6b, the end cap ear structure dimension information is accurately measured using a coordinate measuring machine, and the structural deviation characteristic value is calculated by comparing the difference between the designed dimensions and the measured dimensions.

[0049] Specifically, in response to the sealing bond strength characteristic value being less than a preset sealing bond strength threshold, it is preliminarily determined that the manufacturing of the target multi-ear end cap does not meet the preset standard;

[0050] When the characteristic value of the sealing bond strength is greater than or equal to the preset sealing bond strength threshold, it is preliminarily determined that the manufacturing of the target multi-ear end cap meets the preset standard.

[0051] Specifically, the reason for using the sealing strength characteristic value as a preliminary determination of whether the manufacturing of the target multi-ear end cap meets the preset standard is that this characteristic value can directly reflect the bonding quality between the sealing layer and the inner core. In actual operation, the preset sealing strength threshold is pre-set according to the actual application scenario and performance requirements of the product. When the sealing strength characteristic value is lower than this threshold, it means that the bonding force between the sealing layer and the inner core is insufficient, which may lead to sealing failure during actual use, such as dust leakage or gas infiltration, thereby affecting the overall performance and service life of the dust filter element. Therefore, in this case, it is reasonable and necessary to determine that the product manufacturing does not meet the preset standard, which helps to adjust the production process parameters in a timely manner and improve product quality.

[0052] Specifically, the sealing bond strength characteristic value is the ratio between the average bonding force between the sealing layer and the inner core of each sample and the preset sealing bond strength. In practical applications, the preset sealing bond strength threshold is typically set based on the specific usage requirements of the product, industry standards, and past experience data. The preset sealing bond strength is determined based on factors such as the material and size of the end cap and the expected pressure. In this embodiment, the preset sealing bond strength threshold is set to 0.85, and the preset sealing bond strength is set to 50N.

[0053] Specifically, when the characteristic value of the sealing defect is less than a preset sealing defect threshold, the manufacturing of the target multi-ear end cap is verified to meet a preset standard.

[0054] Specifically, in response to the sealing defect characteristic value being greater than or equal to a preset sealing defect threshold, the manufacturing of the target multi-ear end cap is checked to ensure it does not meet a preset standard, and the preset temperature for heating the inner core of the next batch of end caps is increased based on the difference between the preset sealing bond strength threshold and the sealing bond strength characteristic value.

[0055] Specifically, the sealing defect characteristic value is the ratio of the standard deviation of the flatness of the sealing surface of each sample to the sealing flatness threshold; the flatness of the sealing surface is the vertical distance between the highest and lowest points of the sealing surface.

[0056] Specifically, in actual testing, the preset sealing defect threshold and sealing flatness threshold are set according to the characteristics of the sealing material and the equipment's requirements for sealing accuracy. In this embodiment, the sealing defect characteristic value is set to 0.15, and the sealing flatness threshold is set to 0.05mm, that is, the vertical distance between the highest point and the lowest point of the sealing surface shall not exceed 0.05mm.

[0057] Specifically, the increase in the preset temperature of the end cap inner core heating in the next batch is positively correlated with the difference between the preset sealing strength threshold and the sealing strength characteristic value. It is understood that the positive correlation can be linear or nonlinear, and there is no specific limitation. The slope of the linear positive correlation is also not specifically limited and can be set according to the actual manufacturing process. The only requirement is that the larger the difference between the preset sealing strength threshold and the sealing strength characteristic value, the larger the increase in the preset temperature of the end cap inner core heating in the next batch. For example, if the increase in the preset temperature of the end cap inner core heating in the next batch is set to ΔM, and the difference between the preset sealing strength threshold and the sealing strength characteristic value is set to Δμ, then ΔM = γ × (Δμ + μ0), where γ is the temperature adjustment coefficient, set to 1.06, and μ0 is a constant.

[0058] Specifically, the reason why the manufacturing of the target multi-ear end cap does not meet the preset standard is determined based on the structural deviation characteristic value.

[0059] If the structural deviation characteristic value is less than the preset structural deviation threshold, it is determined that the reason why the manufacturing of the target multi-ear end cap does not meet the preset standard is that the temperature of the mixing device is not up to standard.

[0060] If the structural deviation characteristic value is greater than or equal to the preset structural deviation threshold, it is determined that the reason why the manufacturing of the target multi-ear end cap does not meet the preset standard is that the cooling rate of the sealing layer is not up to standard.

[0061] The structural deviation characteristic value is the ratio of the mean deviation of the ear structure size to the ear size threshold.

[0062] Specifically, the preset structural deviation threshold is set based on the design accuracy requirements of the end cap and actual production experience. In this embodiment, the preset structural deviation threshold is set to 0.12. When the structural deviation characteristic value is less than this threshold, it indicates that the ear structure size deviation is within the allowable range. If the product still does not meet the standard at this time, it can be attributed to the mixing device temperature not reaching the optimal conditions required for the material to fully melt, resulting in uneven mixing of the polymer substrate and the sealing reinforcement material.

[0063] Specifically, in response to the mixing unit temperature not meeting the standard, the temperature of the next batch of mixing units is reduced according to the difference between the preset structural deviation threshold and the structural deviation characteristic value.

[0064] Furthermore, the decrease in temperature of the mixing unit in the next batch is positively correlated with the difference between the preset structural deviation threshold and the structural deviation characteristic value. It is understood that this positive correlation is the same as the explanation above, and will not be repeated here.

[0065] Specifically, adjusting the mixing unit temperature is crucial because it plays a decisive role in the quality of the sealing and reinforcing polymer melt. When the mixing unit temperature is insufficient, the polymer matrix and sealing and reinforcing material cannot fully melt and mix, resulting in unmelted particles or unevenly mixed areas within the melt. These defects directly affect the quality of the end cap core during subsequent injection molding, leading to a decline in the overall structural performance of the end cap. For example, while the ear structure dimensions may meet requirements, the overall compressive strength, deformation resistance, and sealing performance of the end cap may fail to meet preset standards. By reducing the mixing unit temperature for the next batch based on the difference between the preset structural deviation threshold and the structural deviation characteristic value, the mixing process can be gradually adjusted and optimized. This ensures the materials are fully mixed at a more suitable temperature, guaranteeing the quality of the sealing and reinforcing polymer melt and ultimately improving the quality and performance of the final multi-ear end caps for dust collector filter cartridges with a sealing and reinforcing structure.

[0066] Specifically, in response to the sealing layer cooling rate not meeting the standard, the cooling rate of the next batch of sealing layers is reduced based on the difference between the structural deviation characteristic value and the preset structural deviation threshold.

[0067] Furthermore, the reduction in the cooling rate of the sealing layer in the next batch is positively correlated with the difference between the structural deviation characteristic value and the preset structural deviation threshold. It is understood that this positive correlation is the same as the explanation above, and will not be repeated here.

[0068] Specifically, adjusting the cooling rate of the sealing layer is crucial because it significantly impacts the final performance of the sealing structure. When the cooling rate is too fast, the highly elastic sealing material may develop microcracks or residual stress due to insufficient release of internal stress. These defects reduce the bonding strength between the sealing layer and the inner core, and may even lead to delamination. Conversely, if the cooling rate is too slow, the surface hardness of the sealing layer may be insufficient, making it susceptible to damage from mechanical friction or environmental erosion during subsequent use. By dynamically adjusting the cooling rate based on the difference between the structural deviation characteristic value and a preset threshold, the sealing layer can achieve progressive curing during injection molding. This ensures the full arrangement of the material's molecular chains to form a dense structure while avoiding performance degradation caused by thermal stress concentration. For example, when the structural deviation characteristic value indicates that the ear size deviation is close to the threshold, appropriately reducing the cooling rate can extend the flow compensation time of the sealing layer material, thereby reducing the problem of inconsistent dimensional shrinkage caused by rapid shaping. This parameter optimization mechanism ensures the stability of the sealing structure during long-term use and effectively extends the maintenance cycle of the dust filter element under harsh operating conditions.

[0069] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for manufacturing a multi-ear end cap for a dust collector filter element with a sealing and reinforcing structure, characterized in that, The method comprises the following steps: Step S1, respectively acquiring a modified polymer base material mixture and a sealing enhancement dry mixture; Step S2, placing the modified polymer base material mixture and the sealing enhancement dry mixture into a mixing device to obtain a sealing enhancement polymer melt; Step S3, placing the sealing enhancement polymer melt into a first injection mold to obtain an inner core of an end cover; Step S4, after heating the inner core of the end cover to a preset temperature, sending it into a second injection mold, using a high-elasticity sealing material to coat the inner core of the end cover to form a sealing structure and cool and shape to obtain a target multi-ear end cover; Step S5, cutting a plurality of test samples from the target multi-ear end cover, obtaining the bonding force information between the sealing layer and the inner core of the samples, obtaining the sealing bonding strength characteristic value, and preliminarily determining whether the manufacturing of the target multi-ear end cover meets the preset standard according to the sealing bonding strength characteristic value; Step S6a, in response to the preliminary determination that the manufacturing of the target multi-ear end cover meets the preset standard, verifying whether the manufacturing of the target multi-ear end cover meets the preset standard according to the sealing defect characteristic value; the sealing defect characteristic value is obtained by obtaining the sample sealing surface size information; Step S6b, in response to the preliminary determination that the manufacturing of the target multi-ear end cover does not meet the preset standard, determining the reason why the manufacturing of the target multi-ear end cover does not meet the preset standard according to the structure deviation characteristic value; the structure deviation characteristic value is obtained by obtaining the end cover ear structure size information; The sealing bonding strength characteristic value is the ratio between the average value of the bonding force between the sealing layer and the inner core of each sample and the preset sealing bonding force; The sealing defect characteristic value is the ratio between the standard deviation of the flatness of each sample sealing surface and the sealing flatness threshold value; the sealing surface flatness is the vertical distance between the highest point and the lowest point of the sealing surface.

2. The method of claim 1, wherein In response to the sealing bonding strength characteristic value being less than the preset sealing bonding strength threshold value, it is preliminarily determined that the manufacturing of the target multi-ear end cover does not meet the preset standard; In response to the sealing bonding strength characteristic value being greater than or equal to the preset sealing bonding strength threshold value, it is preliminarily determined that the manufacturing of the target multi-ear end cover meets the preset standard.

3. The method of claim 2, wherein the method further comprises: In response to the sealing defect characteristic value being less than the preset sealing defect threshold value, it is verified that the manufacturing of the target multi-ear end cover meets the preset standard.

4. The method of claim 3, wherein the method further comprises: In response to the sealing defect characteristic value being greater than or equal to the preset sealing defect threshold value, it is verified that the manufacturing of the target multi-ear end cover does not meet the preset standard, and the preset temperature for heating the inner core of the end cover in the next batch is increased according to the difference between the preset sealing bonding strength threshold value and the sealing bonding strength characteristic value.

5. The method of claim 4, wherein the method further comprises: The increase amplitude of the preset temperature for heating the inner core of the end cover in the next batch is positively correlated with the difference between the preset sealing bonding strength threshold value and the sealing bonding strength characteristic value.

6. The method of claim 5, wherein the method further comprises: According to the structure deviation characteristic value, it is determined that the reason why the manufacturing of the target multi-ear end cover does not meet the preset standard, wherein If the structure deviation characteristic value is less than the preset structure deviation threshold value, it is determined that the reason why the manufacturing of the target multi-ear end cover does not meet the preset standard is that the temperature of the mixing device is not up to standard; If the structural deviation characteristic value is greater than or equal to a preset structural deviation threshold value, it is determined that the reason for the manufacturing of the target multi-ear end cover not meeting the preset standard is that the sealing layer cooling rate is substandard; The structural deviation characteristic value is a ratio of a deviation mean of an ear structure size to an ear size threshold value.

7. The method of claim 6, wherein the method further comprises: In response to the mixing device temperature being substandard, the next batch mixing device temperature is reduced according to a difference between the preset structural deviation threshold value and the structural deviation characteristic value; And the reduction range of the next batch mixing device temperature is positively correlated with the difference between the preset structural deviation threshold value and the structural deviation characteristic value.

8. The method of claim 7, wherein the method further comprises: In response to the sealing layer cooling rate being substandard, the next batch sealing layer cooling rate is reduced according to a difference between the structural deviation characteristic value and the preset structural deviation threshold value; And the reduction range of the next batch sealing layer cooling rate is positively correlated with the difference between the structural deviation characteristic value and the preset structural deviation threshold value.

Images