Plastic particle cooling system and method of disposable plastic bag conversion machine

Abstract

The invention relates to the technical field of plastic particle cooling, and discloses a plastic particle cooling system and method of a disposable plastic bag conversion machine, and the system comprises the disposable plastic bag conversion machine and a control device; the first acquisition module is configured to determine cutting parameters corresponding to the cutting assembly and hot melting parameters corresponding to the hot melting assembly according to the basic parameters; the second acquisition module is configured to determine an initial cooling parameter of the cooling assembly based on the temperature data and the hot melting parameter; the judgment module is configured to judge whether the initial cooling parameters are adjusted or not based on the analysis result; the adjusting module is configured to adjust the initial cooling parameter based on the image information and the transmission parameter and obtain a final cooling parameter; and the execution module is configured to cool the plastic particles to be recycled according to the final cooling parameters. The efficiency and quality of converting disposable plastic bags into plastic particles are improved, and energy consumption and resource waste are reduced.

Description

Technical Field

[0001] This invention relates to the field of plastic pellet cooling technology, and more specifically, to a plastic pellet cooling system and method for a disposable plastic bag conversion machine. Background Technology

[0002] With increasing environmental awareness, the recycling and reuse of single-use plastic bags has become an important research topic. Traditional plastic bag processing methods are often inefficient and prone to causing secondary pollution. In particular, the lack of effective cooling systems and methods in the plastic pellet cooling process leads to unstable pellet quality, affecting subsequent processing and applications.

[0003] Therefore, it is necessary to design a plastic pellet cooling system and method for a disposable plastic bag conversion machine to solve the problems existing in the current technology. Summary of the Invention

[0004] In view of this, the present invention proposes a plastic pellet cooling system and method for a disposable plastic bag conversion machine, aiming to solve the problem that the lack of an effective cooling system and method in the current technology for the cooling of plastic pellets leads to unstable quality of plastic pellets.

[0005] In one aspect, the present invention provides a plastic pellet cooling system for a disposable plastic bag conversion machine, comprising: A disposable plastic bag conversion machine and a control device are provided; the disposable plastic bag conversion machine includes a feeding assembly, a cutting assembly, a conveying assembly, a funnel, a hot-melt assembly, a cooling assembly, a collection box, and an exhaust gas filtration assembly; the control device is connected to the disposable plastic bag conversion machine, and the control device includes a first acquisition module, a second acquisition module, a judgment module, an adjustment module, and an execution module; wherein... The first acquisition module is configured to identify the plastic bag to be processed, acquire the basic parameters of the plastic bag to be processed, and determine the cutting parameters corresponding to the cutting component and the hot-melt parameters corresponding to the hot-melt component based on the basic parameters. The second acquisition module is configured to process the plastic bag to be processed using the cutting parameters and heat-melting parameters to obtain plastic granules to be recycled; to acquire temperature data of the plastic granules to be recycled; and to determine the initial cooling parameters of the cooling component based on the temperature data and heat-melting parameters. The judgment module is configured to acquire image information of the plastic particles to be recycled, parse the image information, and determine whether to adjust the initial cooling parameters based on the parsing results; The adjustment module is configured to, when it is determined that the initial cooling parameters need to be adjusted, collect the transmission parameters of the transmission component, adjust the initial cooling parameters based on the image information and the transmission parameters, and obtain the final cooling parameters. The execution module is configured to cool the plastic particles to be recycled using the final cooling parameters.

[0006] Further, when determining the cutting parameters corresponding to the cutting component and the hot-melt parameters corresponding to the hot-melt component based on the basic parameters, the process includes: The basic parameters are analyzed to obtain the plastic bag type and plastic bag thickness of the plastic bag to be processed; The basic cutting parameters corresponding to the cutting component and the basic hot-melt parameters corresponding to the hot-melt component are determined according to the type of plastic bag. The basic cutting parameters and basic hot-melt parameters are optimized based on the thickness of the plastic bag to obtain the cutting parameters and hot-melt parameters; The types of plastic bags include ordinary plastic bags, biodegradable plastic bags, and composite plastic bags; When the plastic bag type is the ordinary plastic bag, the basic cutting parameters and basic hot melt parameters are determined to be the first cutting parameters and the first hot melt parameters, respectively. When the plastic bag type is the biodegradable plastic bag, the basic cutting parameters and basic hot melt parameters are determined to be the second cutting parameters and the second hot melt parameters, respectively. When the plastic bag type is the composite plastic bag, the basic cutting parameters and basic hot melt parameters are determined to be the third cutting parameters and the third hot melt parameters, respectively.

[0007] Furthermore, optimizing the basic cutting parameters and basic heat-melting parameters based on the thickness of the plastic bag to obtain the cutting parameters and heat-melting parameters includes: The thickness of the plastic bag is compared with the thickness of the first plastic bag and the thickness of the second plastic bag, and an optimization coefficient group is determined based on the comparison result; wherein, the thickness of the first plastic bag is less than the thickness of the second plastic bag, and the optimization coefficient group includes the cutting optimization coefficient corresponding to the basic cutting parameters and the hot melt optimization coefficient corresponding to the basic hot melt parameters; When the thickness of the plastic bag is less than or equal to the thickness of the first plastic bag, the optimization coefficient group is determined to be the first optimization coefficient group; When the thickness of the plastic bag is greater than the thickness of the first plastic bag and less than or equal to the thickness of the second plastic bag, the optimization coefficient group is determined to be the second optimization coefficient group; When the thickness of the plastic bag is greater than the thickness of the second plastic bag, the optimization coefficient group is determined to be the third optimization coefficient group.

[0008] Further, when determining the initial cooling parameters of the cooling component based on the temperature data and the heat-melting parameters, the following steps are included: The temperature data is analyzed to obtain the temperature of the plastic particles; The hot melt parameters are analyzed to obtain the hot melt temperature of the hot melt component; A cooling feature group is constructed based on the temperature of the plastic particles and the hot melt temperature. The cooling feature group is compared with the historical cooling group, and the initial cooling parameters are determined based on the comparison results. When there is a historical cooling feature group in the historical cooling group that is the same as the cooling feature group, the historical cooling parameter corresponding to the historical cooling feature group is used as the initial cooling parameter; When there is no historical cooling feature group in the historical cooling group that is the same as the cooling feature group, the initial cooling parameters are determined according to the cooling feature group.

[0009] Further, when determining the initial cooling parameters based on the cooling feature set, the process includes: Obtain the standard plastic particle temperature and standard hot melt temperature corresponding to the plastic particle temperature and the hot melt temperature in the cooling feature group; The ratio of the temperature of the plastic granules to the temperature of the standard plastic granules is obtained and denoted as the first temperature ratio. The ratio of the hot melt temperature to the standard hot melt temperature is obtained and denoted as the second temperature ratio. The first temperature ratio is compared with a first temperature ratio threshold, and the second temperature ratio is compared with a second temperature ratio threshold. The initial cooling parameters are determined based on the comparison results. When the first temperature ratio is greater than or equal to the first temperature ratio threshold, and the second temperature ratio is greater than or equal to the second temperature ratio threshold, the initial cooling parameter is determined to be the first cooling parameter. When the first temperature ratio is greater than or equal to the first temperature ratio threshold and the second temperature ratio is less than the second temperature ratio threshold, the initial cooling parameter is determined to be the second cooling parameter. When the first temperature ratio is less than the first temperature ratio threshold and the second temperature ratio is greater than or equal to the second temperature ratio threshold, the initial cooling parameter is determined to be the third cooling parameter. When the first temperature ratio is less than the first temperature ratio threshold and the second temperature ratio is less than the second temperature ratio threshold, the initial cooling parameter is determined to be the fourth cooling parameter.

[0010] Further, when analyzing the image information and determining whether to adjust the initial cooling parameters based on the analysis results, the process includes: The image information is analyzed to obtain the particle size and particle morphology characteristics of the plastic particles to be recycled; The particle quality index of the plastic particles to be recycled is determined based on the particle size characteristic value and the particle morphology characteristic value. The initial cooling parameters should be adjusted based on the particle mass index.

[0011] Further, when determining whether to adjust the initial cooling parameters based on the particle mass index, the process includes: The particle mass index is compared with the particle mass index threshold, and the initial cooling parameters are adjusted based on the comparison results. When the particle mass index is greater than or equal to the particle mass index threshold, it is determined that the initial cooling parameters will not be adjusted. When the particle mass index is less than the particle mass index threshold, it is determined that the initial cooling parameters should be adjusted.

[0012] Further, when adjusting the initial cooling parameters based on the image information and transmission parameters to obtain the final cooling parameters, the process includes: The transmission parameters are analyzed to obtain the transmission rate of the transmission component; Obtain the standard transmission rate corresponding to the transmission rate, and determine the rate deviation based on the transmission rate and the standard transmission rate; The cooling influence factor of the plastic particles to be processed is based on the particle quality index and the rate deviation. The cooling influencing factors are compared with historical data, and the adjustment coefficients of the initial cooling parameters are determined based on the comparison results. When there is a historical cooling impact factor in the historical data that corresponds to the cooling impact factor, the historical adjustment coefficient corresponding to the historical cooling impact factor shall be used as the adjustment coefficient. When there is no historical cooling influence factor corresponding to the cooling influence factor in the historical data, the difference between the cooling influence factor and each historical cooling influence factor in the historical data is calculated one by one, and the minimum absolute value of the difference between the cooling influence factor and the historical cooling influence factor is obtained, which is recorded as the minimum cooling difference. The adjustment coefficient of the initial cooling parameter is determined based on the minimum cooling difference, and the final cooling parameter is obtained.

[0013] Further, when determining the adjustment coefficient of the initial cooling parameters based on the minimum cooling difference and obtaining the final cooling parameters, the process includes: The minimum cooling difference is compared with the first minimum cooling difference and the second minimum cooling difference, and the adjustment coefficient of the initial cooling parameter is determined based on the comparison result; wherein the first minimum cooling difference is less than the second minimum cooling difference. When the minimum cooling difference is less than or equal to the first minimum cooling difference, the adjustment coefficient of the initial cooling parameter is determined to be the first adjustment coefficient; When the minimum cooling difference is greater than the first minimum cooling difference and less than or equal to the second minimum cooling difference, the adjustment coefficient of the initial cooling parameter is determined to be the second adjustment coefficient; When the minimum cooling difference is greater than the second minimum cooling difference, the adjustment coefficient of the initial cooling parameter is determined to be the third adjustment coefficient; The product of the adjustment coefficient and the initial cooling parameter is used as the final cooling parameter.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: The plastic granule cooling system of the disposable plastic bag conversion machine provided by this invention is connected to the disposable plastic bag conversion machine through a control device. The first acquisition module determines the parameters of the cutting and hot-melting components based on the basic parameters of the plastic bag to be processed, enabling the cutting and hot-melting processes to more accurately adapt to different types and thicknesses of plastic bags, improving processing efficiency and quality. The second acquisition module determines the initial cooling parameters of the cooling components based on the temperature data of the processed plastic granules to be recycled, providing a basis for subsequent cooling adjustments. The judgment module, by acquiring and analyzing the image information of the plastic granules to be recycled, can accurately determine whether the initial cooling parameters need to be adjusted, enhancing the system's intelligence and adaptability. The adjustment module adjusts the initial cooling parameters based on the image information and the transmission parameters of the transmission component to obtain the final cooling parameters, ensuring the accuracy and stability of the cooling process. The execution module cools the plastic granules to be recycled using the final cooling parameters, ensuring optimal cooling effect. This systematic design and control method not only improves the efficiency and quality of converting disposable plastic bags into plastic granules but also reduces energy consumption and resource waste.

[0015] In another aspect, the present invention also proposes a method for cooling plastic granules in a disposable plastic bag conversion machine, comprising the following steps: Identify the plastic bag to be processed, collect the basic parameters of the plastic bag to be processed, and determine the cutting parameters corresponding to the cutting component and the hot-melt parameters corresponding to the hot-melt component based on the basic parameters; The plastic bag to be processed is processed using the cutting parameters and heat-melting parameters to obtain plastic granules to be recycled; the temperature data of the plastic granules to be recycled is collected, and the initial cooling parameters of the cooling component are determined based on the temperature data and the heat-melting parameters. Image information of the plastic particles to be recycled is acquired and analyzed. Based on the analysis results, it is determined whether the initial cooling parameters should be adjusted. When it is determined that the initial cooling parameters need to be adjusted, the transmission parameters of the transmission component are collected, the initial cooling parameters are adjusted based on the image information and the transmission parameters, and the final cooling parameters are obtained. The plastic particles to be recycled are cooled using the final cooling parameters.

[0016] It is understandable that the plastic pellet cooling system and method of the above-mentioned disposable plastic bag conversion machine have the same beneficial effects, and will not be described in detail here. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A structural block diagram of the plastic pellet cooling system of the disposable plastic bag converter provided in an embodiment of the present invention; Figure 2 A flowchart of a method for cooling plastic granules in a disposable plastic bag converter provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of a disposable plastic bag converter provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall structure of the disposable plastic bag conversion machine provided in an embodiment of the present invention. Detailed Implementation

[0018] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] See Figure 1 , Figure 3-4 As shown in some embodiments of this application, this embodiment provides a plastic pellet cooling system for a disposable plastic bag conversion machine, including: A disposable plastic bag conversion machine and a control device are provided; the disposable plastic bag conversion machine includes a feeding assembly, a cutting assembly, a conveying assembly, a funnel, a hot-melt assembly, a cooling assembly, a collection box, and an exhaust gas filtration assembly; the control device is connected to the disposable plastic bag conversion machine, and the control device includes a first acquisition module, a second acquisition module, a judgment module, an adjustment module, and an execution module; wherein... The first acquisition module is configured to identify the plastic bag to be processed, acquire the basic parameters of the plastic bag to be processed, and determine the cutting parameters corresponding to the cutting component and the hot-melt parameters corresponding to the hot-melt component based on the basic parameters. The second acquisition module is configured to process the plastic bag to be processed using the cutting parameters and heat-melting parameters to obtain plastic granules to be recycled; to acquire temperature data of the plastic granules to be recycled; and to determine the initial cooling parameters of the cooling component based on the temperature data and heat-melting parameters. The judgment module is configured to acquire image information of the plastic particles to be recycled, parse the image information, and determine whether to adjust the initial cooling parameters based on the parsing results; The adjustment module is configured to, when it is determined that the initial cooling parameters need to be adjusted, collect the transmission parameters of the transmission component, adjust the initial cooling parameters based on the image information and the transmission parameters, and obtain the final cooling parameters. The execution module is configured to cool the plastic particles to be recycled using the final cooling parameters.

[0020] In this embodiment, the disposable plastic bag conversion machine is the disposable plastic bag conversion machine in the patent (application number: 202510389162.7).

[0021] It is understood that the plastic pellet cooling system of the disposable plastic bag converter provided in this embodiment is connected to the disposable plastic bag converter through a control device. The first acquisition module determines the parameters of the cutting and hot-melt components based on the basic parameters of the plastic bag to be processed, enabling the cutting and hot-melt processes to more accurately adapt to different types and thicknesses of plastic bags, improving processing efficiency and quality. The second acquisition module determines the initial cooling parameters of the cooling components based on the temperature data of the processed plastic pellets to be recycled, providing a basis for subsequent cooling adjustments. The judgment module, by acquiring and analyzing the image information of the plastic pellets to be recycled, can accurately determine whether the initial cooling parameters need to be adjusted, enhancing the system's intelligence and adaptability. The adjustment module adjusts the initial cooling parameters based on the image information and the transmission parameters of the transmission component to obtain the final cooling parameters, ensuring the accuracy and stability of the cooling process. The execution module cools the plastic pellets to be recycled using the final cooling parameters, ensuring optimal cooling effect. This systematic design and control method not only improves the efficiency and quality of converting disposable plastic bags into plastic pellets but also reduces energy consumption and resource waste.

[0022] Specifically, determining the cutting parameters corresponding to the cutting component and the hot-melt parameters corresponding to the hot-melt component based on the basic parameters includes: The basic parameters are analyzed to obtain the plastic bag type and plastic bag thickness of the plastic bag to be processed; The basic cutting parameters corresponding to the cutting component and the basic hot-melt parameters corresponding to the hot-melt component are determined according to the type of plastic bag. The basic cutting parameters and basic hot-melt parameters are optimized based on the thickness of the plastic bag to obtain the cutting parameters and hot-melt parameters; The types of plastic bags include ordinary plastic bags, biodegradable plastic bags, and composite plastic bags; When the plastic bag type is the ordinary plastic bag, the basic cutting parameters and basic hot melt parameters are determined to be the first cutting parameters and the first hot melt parameters, respectively. When the plastic bag type is the biodegradable plastic bag, the basic cutting parameters and basic hot melt parameters are determined to be the second cutting parameters and the second hot melt parameters, respectively. When the plastic bag type is the composite plastic bag, the basic cutting parameters and basic hot melt parameters are determined to be the third cutting parameters and the third hot melt parameters, respectively.

[0023] In this embodiment, the cutting parameters and the hot-melting parameters are preferably the cutting speed and the heating power, respectively.

[0024] In this embodiment, the order of the basic cutting parameters is: the third cutting parameter > the second cutting parameter and > the first cutting parameter; the order of the basic hot melt parameters is: the third hot melt parameter > the second hot melt parameter and > the first hot melt parameter.

[0025] Understandably, this is because composite plastic bags are typically made of multiple different plastic materials, resulting in a more complex structure and properties. This necessitates higher cutting speeds and heating power for effective cutting and heat-melting. While biodegradable plastic bags also have certain unique characteristics, they are less difficult to process compared to composite plastic bags. Ordinary plastic bags have a relatively simple structure and properties, requiring relatively lower cutting speeds and heating power. By determining appropriate basic cutting and heat-melting parameters based on different plastic bag types, and further optimizing them according to the bag thickness, it is possible to ensure that the cutting and heat-melting components process the plastic bags with the most suitable parameters, thereby improving processing efficiency and the quality of the plastic granules.

[0026] Specifically, optimizing the basic cutting parameters and basic heat-melting parameters based on the thickness of the plastic bag to obtain the cutting parameters and heat-melting parameters includes: The thickness of the plastic bag is compared with the thickness of the first plastic bag and the thickness of the second plastic bag, and an optimization coefficient group is determined based on the comparison result; wherein, the thickness of the first plastic bag is less than the thickness of the second plastic bag, and the optimization coefficient group includes the cutting optimization coefficient corresponding to the basic cutting parameters and the hot melt optimization coefficient corresponding to the basic hot melt parameters; When the thickness of the plastic bag is less than or equal to the thickness of the first plastic bag, the optimization coefficient group is determined to be the first optimization coefficient group; When the thickness of the plastic bag is greater than the thickness of the first plastic bag and less than or equal to the thickness of the second plastic bag, the optimization coefficient group is determined to be the second optimization coefficient group; When the thickness of the plastic bag is greater than the thickness of the second plastic bag, the optimization coefficient group is determined to be the third optimization coefficient group.

[0027] In this embodiment, the preferred values ​​for the first optimization coefficient group are: a cutting optimization coefficient of 0.9 corresponding to the basic cutting parameters and a hot-melt optimization coefficient of 0.85 corresponding to the basic hot-melt parameters; the preferred values ​​for the second optimization coefficient group are: a cutting optimization coefficient of 1.0 corresponding to the basic cutting parameters and a hot-melt optimization coefficient of 1.0 corresponding to the basic hot-melt parameters; and the preferred values ​​for the third optimization coefficient group are: a cutting optimization coefficient of 1.1 corresponding to the basic cutting parameters and a hot-melt optimization coefficient of 1.15 corresponding to the basic hot-melt parameters.

[0028] Understandably, by setting optimization coefficient sets corresponding to different thickness ranges, the basic cutting and heat-melting parameters can be precisely adjusted according to the actual thickness of the plastic bag. When the plastic bag thickness is thin (less than or equal to the thickness of the first plastic bag), the cutting speed and heating power are appropriately reduced to avoid over-processing that could lead to a decrease in the quality of the plastic granules. When the plastic bag thickness is in a medium range (greater than the thickness of the first plastic bag but less than or equal to the thickness of the second plastic bag), the basic parameters remain unchanged to ensure stable processing results. When the plastic bag thickness is thick (greater than the thickness of the second plastic bag), the cutting speed and heating power are increased to ensure that the plastic bag is fully cut and heat-melted. This method of optimizing parameters based on the plastic bag thickness further improves the processing efficiency and quality of converting disposable plastic bags into plastic granules.

[0029] Specifically, determining the initial cooling parameters of the cooling component based on the temperature data and the heat-melting parameters includes: The temperature data is analyzed to obtain the temperature of the plastic particles; The hot melt parameters are analyzed to obtain the hot melt temperature of the hot melt component; A cooling feature group is constructed based on the temperature of the plastic particles and the hot melt temperature. The cooling feature group is compared with the historical cooling group, and the initial cooling parameters are determined based on the comparison results. When there is a historical cooling feature group in the historical cooling group that is the same as the cooling feature group, the historical cooling parameter corresponding to the historical cooling feature group is used as the initial cooling parameter; When there is no historical cooling feature group in the historical cooling group that is the same as the cooling feature group, the initial cooling parameters are determined according to the cooling feature group.

[0030] Understandably, by constructing cooling feature sets and comparing them with historical cooling sets, the system can fully utilize historical data accumulated during operation to quickly determine initial cooling parameters. When identical historical cooling feature sets exist, the corresponding historical cooling parameters are directly adopted, improving the efficiency and accuracy of parameter determination. When identical historical cooling feature sets do not exist, the system can determine initial cooling parameters in real time based on the cooling feature sets, ensuring that the cooling process can be adjusted promptly according to actual conditions. This method of determining initial cooling parameters based on temperature data and heat melt parameters provides a reliable foundation for the precise adjustment of subsequent cooling parameters, contributing to improved performance and stability of the entire plastic granule cooling system.

[0031] Specifically, determining the initial cooling parameters based on the cooling feature set includes: Obtain the standard plastic particle temperature and standard hot melt temperature corresponding to the plastic particle temperature and the hot melt temperature in the cooling feature group; The ratio of the temperature of the plastic granules to the temperature of the standard plastic granules is obtained and denoted as the first temperature ratio. The ratio of the hot melt temperature to the standard hot melt temperature is obtained and denoted as the second temperature ratio. The first temperature ratio is compared with a first temperature ratio threshold, and the second temperature ratio is compared with a second temperature ratio threshold. The initial cooling parameters are determined based on the comparison results. When the first temperature ratio is greater than or equal to the first temperature ratio threshold, and the second temperature ratio is greater than or equal to the second temperature ratio threshold, the initial cooling parameter is determined to be the first cooling parameter. When the first temperature ratio is greater than or equal to the first temperature ratio threshold and the second temperature ratio is less than the second temperature ratio threshold, the initial cooling parameter is determined to be the second cooling parameter. When the first temperature ratio is less than the first temperature ratio threshold and the second temperature ratio is greater than or equal to the second temperature ratio threshold, the initial cooling parameter is determined to be the third cooling parameter. When the first temperature ratio is less than the first temperature ratio threshold and the second temperature ratio is less than the second temperature ratio threshold, the initial cooling parameter is determined to be the fourth cooling parameter.

[0032] In this embodiment, the cooling assembly includes a cooling component, a cooling chip, and a cooling fan. The initial cooling parameter refers to the initial speed of the cooling fan.

[0033] In this embodiment, the initial cooling parameters are in the following order: first cooling parameter > second cooling parameter > third cooling parameter > fourth cooling parameter.

[0034] Understandably, this design of the initial cooling parameter relationships is based on a comprehensive consideration of the plastic particle temperature and the melt temperature. When both the plastic particle temperature and the melt temperature are high, it indicates that the plastic particles have absorbed a lot of heat during the melting process, requiring a stronger cooling effect to quickly reduce the temperature. Therefore, a larger initial cooling parameter (the first cooling parameter) is used, causing the cooling fan to operate at a higher speed to accelerate airflow and remove more heat. When the plastic particle temperature is high but the melt temperature is low, it indicates that the plastic particles themselves are at a relatively high temperature, but the heat released during the melting process is relatively small. In this case, the second cooling parameter is used to appropriately reduce the cooling fan speed, ensuring a certain cooling effect while avoiding over-cooling. When the plastic particle temperature is low but the melt temperature is high, it means that the melting process has released a lot of heat, but the plastic particles themselves are not at a high temperature. The third cooling parameter is used to further reduce the cooling fan speed. When both the plastic particle temperature and the melt temperature are low, it indicates that the plastic particles do not require excessive cooling. The fourth cooling parameter is used to allow the cooling fan to operate at the lowest speed, meeting basic cooling needs while saving energy. By determining the initial cooling parameters based on the ratio of plastic particle temperature to hot melt temperature, the cooling process can be controlled more precisely, improving the quality of plastic particles and the efficiency of the cooling system.

[0035] Specifically, when parsing the image information and determining whether to adjust the initial cooling parameters based on the parsing results, the process includes: The image information is analyzed to obtain the particle size and particle morphology characteristics of the plastic particles to be recycled; The particle quality index of the plastic particles to be recycled is determined based on the particle size characteristic value and the particle morphology characteristic value. The initial cooling parameters should be adjusted based on the particle mass index.

[0036] In this embodiment, the particle size characteristic value is preferably the average diameter of the plastic particles to be recycled; the particle morphology characteristic value is preferably the sphericity of the plastic particles to be recycled.

[0037] In this embodiment, the formula for calculating the particle mass index is: Wherein, PQI represents the particle quality index; Daaverage represents the average diameter of the plastic particles to be recycled; σD represents the standard deviation of the diameter of the plastic particles to be recycled, which is used to measure the dispersion of particle diameter; Raverage represents the average sphericity of the plastic particles to be recycled; C represents the agglomeration rate of the plastic particles to be recycled (area of ​​agglomerated particles / total particle area); α1, α2, and α3 are weighting coefficients, and α1 + α2 + α3 = 1.

[0038] Understandably, a high particle quality index indicates that the plastic particles to be recycled are relatively uniform in size, have a high degree of regularity in shape, and have a low degree of surface irregularity. In this case, the cooling effect is good, and it may not be necessary to make significant adjustments to the initial cooling parameters. Conversely, a low particle quality index indicates that there are certain problems with the size, shape, or surface condition of the plastic particles to be recycled, which may affect the cooling effect. In this case, it is necessary to make appropriate adjustments to the initial cooling parameters according to the specific situation to ensure that the plastic particles can be cooled sufficiently and uniformly, thereby improving the quality of the final product.

[0039] Specifically, determining whether to adjust the initial cooling parameters based on the particle mass index includes: The particle mass index is compared with the particle mass index threshold, and the initial cooling parameters are adjusted based on the comparison results. When the particle mass index is greater than or equal to the particle mass index threshold, it is determined that the initial cooling parameters will not be adjusted. When the particle mass index is less than the particle mass index threshold, it is determined that the initial cooling parameters should be adjusted.

[0040] Understandably, when the particle quality index is greater than or equal to the threshold, it indicates that the particle size and morphology characteristics of the plastic granules to be recycled are good, and the particle quality is high. In this case, cooling according to the initial cooling parameters can meet the cooling requirements of the plastic granules and ensure that the cooling effect will not negatively affect the particle quality; therefore, there is no need to adjust the initial cooling parameters. However, when the particle quality index is less than the threshold, it means that the plastic granules to be recycled have certain problems in terms of particle size or morphology, such as being too coarse or having irregular shapes. These problems will affect the cooling effect of the plastic granules. If cooling is still carried out according to the initial cooling parameters, the plastic granules may not reach the ideal cooling state, thus affecting subsequent processing performance and the overall quality of the plastic granules. Therefore, it is determined that the initial cooling parameters should be adjusted in this case. By changing the cooling parameters, the cooling process can be optimized to improve the cooling effect of the plastic granules and increase their quality.

[0041] Specifically, when adjusting the initial cooling parameters based on the image information and transmission parameters to obtain the final cooling parameters, the process includes: The transmission parameters are analyzed to obtain the transmission rate of the transmission component; Obtain the standard transmission rate corresponding to the transmission rate, and determine the rate deviation based on the transmission rate and the standard transmission rate; The cooling influence factor of the plastic particles to be processed is based on the particle quality index and the rate deviation. The cooling influencing factors are compared with historical data, and the adjustment coefficients of the initial cooling parameters are determined based on the comparison results. When there is a historical cooling impact factor in the historical data that corresponds to the cooling impact factor, the historical adjustment coefficient corresponding to the historical cooling impact factor shall be used as the adjustment coefficient. When there is no historical cooling influence factor corresponding to the cooling influence factor in the historical data, the difference between the cooling influence factor and each historical cooling influence factor in the historical data is calculated one by one, and the minimum absolute value of the difference between the cooling influence factor and the historical cooling influence factor is obtained, which is recorded as the minimum cooling difference. The adjustment coefficient of the initial cooling parameter is determined based on the minimum cooling difference, and the final cooling parameter is obtained.

[0042] In this embodiment, the rate deviation is calculated as (transmission rate - standard transmission rate) ÷ standard transmission rate. The result is the rate deviation, which reflects the degree of deviation of the actual transmission rate from the standard transmission rate.

[0043] In this embodiment, the calculation process of the cooling influence factor is as follows: First, the particle quality index and rate deviation are normalized to convert them into dimensionless values ​​for subsequent comprehensive calculation. The normalization process can use linear normalization to map the particle quality index and rate deviation to the [0,1] interval, respectively. Next, weighting coefficients are assigned to the particle quality index and rate deviation, respectively. The magnitude of the weighting coefficients reflects the importance of these two factors in the calculation of the cooling influence factor. For example, if particle quality has a greater impact on the cooling effect, a larger weighting coefficient can be assigned to the particle quality index, and a smaller weighting coefficient to the rate deviation. Then, the normalized particle quality index and rate deviation are multiplied by their corresponding weighting coefficients, and the two products are added together to obtain the cooling influence factor of the plastic particles to be processed. The calculation formula can be expressed as: Cooling Influence Factor = Normalized Particle Quality Index × Particle Quality Index Weighting Coefficient + Normalized Rate Deviation × Rate Deviation Weighting Coefficient.

[0044] Understandably, the magnitude of the rate deviation directly reflects the stability of the conveying component's operating state. A large rate deviation indicates a significant difference between the actual conveying rate and the standard conveying rate, which could be due to faults in the conveying component itself, excessive load variations, or inaccurate control. In this case, the unstable conveying speed of the plastic granules causes variations in the residence time of the granules in the cooling zone, thus affecting the cooling effect. For example, if the conveying rate is too fast, the residence time of the plastic granules in the cooling zone is too short, potentially resulting in insufficient cooling; if the conveying rate is too slow, the residence time of the plastic granules in the cooling zone is too long, potentially leading to over-cooling and affecting the quality of the plastic granules. The particle quality index reflects the characteristics of the plastic granules to be recycled, combining particle size and morphology characteristics. Different particle quality indices mean that the plastic granules have different adaptability to cooling conditions during the cooling process. For example, plastic granules with a low particle quality index may require more precise adjustments to cooling parameters due to excessively coarse particle size or irregular shape to ensure uniform cooling and avoid localized overheating or overcooling.

[0045] It's understandable that comparing cooling influencing factors with historical data to determine the adjustment coefficients for initial cooling parameters is an experience-based optimization method. Historical data contains the adjustments to cooling parameters and their corresponding cooling effects under different operating conditions. By comparing these historical cooling influencing factors with historical data, we can find the historical situation most similar to the current cooling influencing factor and use its adjustment coefficient as a reference. When a historical cooling influencing factor exists that perfectly corresponds to the current one, it means a similar operating condition has been encountered before. In this case, directly using the historical adjustment coefficient corresponding to that historical cooling influencing factor as the adjustment coefficient for the current initial cooling parameters is highly reliable and accurate because it is based on verified practical experience. However, when no perfectly corresponding historical cooling influencing factor exists in the historical data, we calculate the difference between the current cooling influencing factor and each historical cooling influencing factor in the historical data, and find the minimum absolute value of the difference, i.e., the minimum cooling difference. The adjustment coefficient for the initial cooling parameters is determined based on this minimum cooling difference because the minimum cooling difference means that the current operating condition is closest to a certain historical operating condition, so the adjustment coefficient under that historical condition can be used as a reference for setting the parameters.

[0046] Specifically, when determining the adjustment coefficient of the initial cooling parameters based on the minimum cooling difference and obtaining the final cooling parameters, the process includes: The minimum cooling difference is compared with the first minimum cooling difference and the second minimum cooling difference, and the adjustment coefficient of the initial cooling parameter is determined based on the comparison result; wherein the first minimum cooling difference is less than the second minimum cooling difference. When the minimum cooling difference is less than or equal to the first minimum cooling difference, the adjustment coefficient of the initial cooling parameter is determined to be the first adjustment coefficient; When the minimum cooling difference is greater than the first minimum cooling difference and less than or equal to the second minimum cooling difference, the adjustment coefficient of the initial cooling parameter is determined to be the second adjustment coefficient; When the minimum cooling difference is greater than the second minimum cooling difference, the adjustment coefficient of the initial cooling parameter is determined to be the third adjustment coefficient; The product of the adjustment coefficient and the initial cooling parameter is used as the final cooling parameter.

[0047] In this embodiment, the adjustment coefficients are arranged in the order of first adjustment coefficient < second adjustment coefficient < third adjustment coefficient. This setting is based on the closeness of the minimum cooling difference to historical operating conditions. When the minimum cooling difference is small, it indicates that the current operating condition is very close to a historical operating condition. Therefore, the first adjustment coefficient, which had a smaller adjustment coefficient under that historical operating condition, can be used to adjust the initial cooling parameters to ensure the stability and reliability of the cooling effect. Conversely, when the minimum cooling difference is large, it indicates that the current operating condition differs significantly from historical operating conditions. In this case, the third adjustment coefficient, which has a larger adjustment coefficient, needs to be used to adjust the initial cooling parameters to address the challenges brought about by changes in operating conditions and ensure that the plastic granules are properly cooled. This tiered adjustment method allows for more precise control of the cooling process, improving the quality of the plastic granules and production efficiency.

[0048] See Figure 2 As shown in some embodiments of this application, this embodiment provides a method for cooling plastic granules in a disposable plastic bag conversion machine, including the following steps: S100: Determine the plastic bag to be processed, collect the basic parameters of the plastic bag to be processed, and determine the cutting parameters corresponding to the cutting component and the hot melt parameters corresponding to the hot melt component based on the basic parameters; S200: The plastic bag to be processed is processed with the cutting parameters and hot melt parameters to obtain plastic particles to be recycled; the temperature data of the plastic particles to be recycled is collected, and the initial cooling parameters of the cooling component are determined based on the temperature data and the hot melt parameters. S300: Acquire image information of the plastic particles to be recycled, parse the image information, and determine whether to adjust the initial cooling parameters based on the parsing results; S400: When it is determined that the initial cooling parameters need to be adjusted, the transmission parameters of the transmission component are collected, the initial cooling parameters are adjusted based on the image information and the transmission parameters, and the final cooling parameters are obtained. S500: Cool the plastic particles to be recycled using the final cooling parameters.

[0049] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0050] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0051] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0052] These computer program instructions can also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A plastic pellet cooling system for a disposable plastic bag converting machine, characterized by, The application relates to a disposable plastic bag conversion machine and a control device; the disposable plastic bag conversion machine comprises a feeding assembly, a cutting assembly, a conveying assembly, a funnel, a hot melting assembly, a cooling assembly, a collecting box and a waste gas filtering assembly; the control device is connected with the disposable plastic bag conversion machine, and the control device comprises a first acquisition module, a second acquisition module, a judgment module, an adjustment module and an execution module; wherein, the first acquisition module is configured to determine a plastic bag to be treated, acquire basic parameters of the plastic bag to be treated, determine cutting parameters corresponding to the cutting assembly and hot melting parameters corresponding to the hot melting assembly according to the basic parameters; the second acquisition module is configured to process the plastic bag to be treated according to the cutting parameters and the hot melting parameters, obtain plastic particles to be recycled, acquire temperature data of the plastic particles to be recycled, and determine initial cooling parameters of the cooling assembly based on the temperature data and the hot melting parameters; the judgment module is configured to acquire image information of the plastic particles to be recycled, analyze the image information, and judge whether the initial cooling parameters need to be adjusted based on the analysis result; the adjustment module is configured to acquire conveying parameters of the conveying assembly when it is judged that the initial cooling parameters need to be adjusted, adjust the initial cooling parameters based on the image information and the conveying parameters, and obtain final cooling parameters; the execution module is configured to cool the plastic particles to be recycled according to the final cooling parameters. When the cutting parameters corresponding to the cutting assembly and the hot melting parameters corresponding to the hot melting assembly are determined according to the basic parameters, the following steps are included:

2. The plastic pellet cooling system of a single-use plastic bag converting machine according to claim 1, wherein, the basic parameters are analyzed to obtain a plastic bag type and a plastic bag thickness of the plastic bag to be treated; the basic cutting parameters corresponding to the cutting assembly and the basic hot melting parameters corresponding to the hot melting assembly are determined according to the plastic bag type; the basic cutting parameters and the basic hot melting parameters are optimized according to the plastic bag thickness to obtain the cutting parameters and the hot melting parameters; wherein the plastic bag type includes ordinary plastic bags, degradable plastic bags and composite plastic bags; when the plastic bag type is the ordinary plastic bag, the basic cutting parameters and the basic hot melting parameters are determined as first cutting parameters and first hot melting parameters respectively; when the plastic bag type is the degradable plastic bag, the basic cutting parameters and the basic hot melting parameters are determined as second cutting parameters and second hot melting parameters respectively; when the plastic bag type is the composite plastic bag, the basic cutting parameters and the basic hot melting parameters are determined as third cutting parameters and third hot melting parameters respectively. When the basic cutting parameters and the basic hot melting parameters are optimized according to the plastic bag thickness to obtain the cutting parameters and the hot melting parameters, the following steps are included:

3. The plastic pellet cooling system of a single-use plastic bag converting machine according to claim 2, wherein, the plastic bag thickness is compared with a first plastic bag thickness and a second plastic bag thickness, and optimization coefficient groups are determined according to the comparison result; wherein the first plastic bag thickness is smaller than the second plastic bag thickness, and the optimization coefficient groups include cutting optimization coefficients corresponding to the basic cutting parameters and hot melting optimization coefficients corresponding to the basic hot melting parameters; ​ determining the optimization coefficient group as a first optimization coefficient group when the plastic bag thickness is less than or equal to the first plastic bag thickness; determining the optimization coefficient group as a second optimization coefficient group when the plastic bag thickness is greater than the first plastic bag thickness and less than or equal to the second plastic bag thickness; determining the optimization coefficient group as a third optimization coefficient group when the plastic bag thickness is greater than the second plastic bag thickness.

4. The plastic pellet cooling system of the single-use plastic bag converting machine of claim 3, wherein, when determining the initial cooling parameter of the cooling assembly based on the temperature data and the hot melting parameter, comprising: analyzing the temperature data to obtain a plastic particle temperature; analyzing the hot melting parameter to obtain a hot melting temperature of the hot melting assembly; constructing a cooling feature group according to the plastic particle temperature and the hot melting temperature, comparing the cooling feature group with a historical cooling group, and determining the initial cooling parameter according to a comparison result; when there is a historical cooling feature group identical to the cooling feature group in the historical cooling group, taking a historical cooling parameter corresponding to the historical cooling feature group as the initial cooling parameter; when there is no historical cooling feature group identical to the cooling feature group in the historical cooling group, determining the initial cooling parameter according to the cooling feature group.

5. The plastic pellet cooling system of a single-use plastic bag converting machine according to claim 4, wherein, when determining the initial cooling parameter according to the cooling feature group, comprising: obtaining a standard plastic particle temperature and a standard hot melting temperature corresponding to the plastic particle temperature and the hot melting temperature in the cooling feature group; obtaining a first temperature ratio of the plastic particle temperature and the standard plastic particle temperature; obtaining a second temperature ratio of the hot melting temperature and the standard hot melting temperature; comparing the first temperature ratio with a first temperature ratio threshold and comparing the second temperature ratio with a second temperature ratio threshold, and determining the initial cooling parameter according to a comparison result; when the first temperature ratio is greater than or equal to the first temperature ratio threshold and the second temperature ratio is greater than or equal to the second temperature ratio threshold, determining the initial cooling parameter as a first cooling parameter; when the first temperature ratio is greater than or equal to the first temperature ratio threshold and the second temperature ratio is less than the second temperature ratio threshold, determining the initial cooling parameter as a second cooling parameter; when the first temperature ratio is less than the first temperature ratio threshold and the second temperature ratio is greater than or equal to the second temperature ratio threshold, determining the initial cooling parameter as a third cooling parameter; when the first temperature ratio is less than the first temperature ratio threshold and the second temperature ratio is less than the second temperature ratio threshold, determining the initial cooling parameter as a fourth cooling parameter.

6. The plastic pellet cooling system of the single-use plastic bag converting machine of claim 5, wherein, when analyzing the image information and determining whether to adjust the initial cooling parameter based on an analysis result, comprising: analyzing the image information to obtain a particle size feature value and a particle shape feature value of the plastic particles to be recycled; determining a particle quality index of the plastic particles to be recycled according to the particle size feature value and the particle shape feature value; determining whether to adjust the initial cooling parameter according to the particle quality index.

7. The plastic pellet cooling system of a single-use plastic bag converting machine according to claim 6, wherein, When determining whether to adjust the initial cooling parameter according to the particle quality index, the method comprises: comparing the particle quality index with a particle quality index threshold value, and determining whether to adjust the initial cooling parameter according to the comparison result; when the particle quality index is greater than or equal to the particle quality index threshold value, it is determined that the initial cooling parameter is not adjusted; when the particle quality index is less than the particle quality index threshold value, it is determined that the initial cooling parameter is adjusted.

8. The plastic pellet cooling system of the single-use plastic bag converting machine of claim 7, wherein, When adjusting the initial cooling parameter based on the image information and the conveying parameter and obtaining the final cooling parameter, the method comprises: analyzing the conveying parameter to obtain the conveying rate of the conveying assembly; obtaining the standard conveying rate corresponding to the conveying rate, and determining the rate deviation degree based on the conveying rate and the standard conveying rate; determining the cooling influence factor of the plastic particles to be processed according to the particle quality index and the rate deviation degree; comparing the cooling influence factor with historical data to determine the adjustment coefficient of the initial cooling parameter according to the comparison result; when there is a historical cooling influence factor corresponding to the cooling influence factor in the historical data, the historical adjustment coefficient corresponding to the historical cooling influence factor is taken as the adjustment coefficient; when there is no historical cooling influence factor corresponding to the cooling influence factor in the historical data, the difference between the cooling influence factor and each historical cooling influence factor in the historical data is calculated one by one, and the minimum value of the absolute value of the difference between the cooling influence factor and the historical cooling influence factor is obtained, which is recorded as the minimum cooling difference, the adjustment coefficient of the initial cooling parameter is determined according to the minimum cooling difference, and the final cooling parameter is obtained.

9. The plastic pellet cooling system of a single-use plastic bag converting machine according to claim 8, wherein, When determining the adjustment coefficient of the initial cooling parameter according to the minimum cooling difference and obtaining the final cooling parameter, the method comprises: comparing the minimum cooling difference with a first minimum cooling difference and a second minimum cooling difference to determine the adjustment coefficient of the initial cooling parameter according to the comparison result; wherein the first minimum cooling difference is less than the second minimum cooling difference; when the minimum cooling difference is less than or equal to the first minimum cooling difference, it is determined that the adjustment coefficient of the initial cooling parameter is a first adjustment coefficient; when the minimum cooling difference is greater than the first minimum cooling difference and less than or equal to the second minimum cooling difference, it is determined that the adjustment coefficient of the initial cooling parameter is a second adjustment coefficient; when the minimum cooling difference is greater than the second minimum cooling difference, it is determined that the adjustment coefficient of the initial cooling parameter is a third adjustment coefficient; the product value of the adjustment coefficient and the initial cooling parameter is taken as the final cooling parameter.

10. A method for cooling plastic particles of a disposable plastic bag converting machine, applied to a plastic particle cooling system of a disposable plastic bag converting machine according to any one of claims 1-9, characterized in that, The method comprises: determining a plastic bag to be processed, collecting the basic parameters of the plastic bag to be processed, and determining the cutting parameter corresponding to the cutting assembly and the hot melting parameter corresponding to the hot melting assembly according to the basic parameters; The cutting parameters and hot melting parameters are used to process the plastic bags to be processed, and recycled plastic particles are obtained; temperature data of the recycled plastic particles are collected, and initial cooling parameters of the cooling assembly are determined based on the temperature data and the hot melting parameters; Image information of the recycled plastic particles is collected, and the image information is analyzed, and whether to adjust the initial cooling parameters is determined based on the analysis result; When it is determined to adjust the initial cooling parameters, the conveying parameters of the conveying assembly are collected, the initial cooling parameters are adjusted based on the image information and the conveying parameters, and final cooling parameters are obtained; The recycled plastic particles are cooled based on the final cooling parameters.

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