CN-121995979-A - Heat sealing pressure control method and device for polyethylene hot melt film

CN121995979ACN 121995979 ACN121995979 ACN 121995979ACN-121995979-A

Abstract

The application discloses a heat sealing pressure control method and a heat sealing pressure control device for a polyethylene hot melt film, which relate to the field of heat sealing pressure control, and comprise the following steps: the method comprises the steps of collecting a plurality of film parameters of the polyethylene hot-melt film, determining heat-sealing pressure values, synchronizing the heat-sealing pressure values to a control prediction model, outputting a first control signal to carry out heat-sealing pressure simulation control on the polyethylene hot-melt film, generating a first simulation control effect to carry out retrospective feedback, generating a control feedback parameter to carry out dynamic adjustment on the first control signal, generating a second control signal to be sent to a control terminal to carry out intelligent control on the heat-sealing pressure of the polyethylene hot-melt film, solving the technical problems that a traditional heat-sealing pressure control system depends on manual experience or a fixed set value, is difficult to adjust the pressure in real time, affects the sealing quality, increases material waste, reduces the overall efficiency of a production line, achieves the technical effects of automatically monitoring and adjusting the heat-sealing pressure, improving the sealing quality, enhancing the self-adaption capability on environmental change and improving the production efficiency.

Inventors

CHENG XIN
QU YALI

Assignees

南通三彩包装有限公司

Dates

Publication Date: 20260508
Application Date: 20251230

Claims (8)

1. A method for controlling heat-seal pressure of a polyethylene hot-melt film, the method comprising: collecting a plurality of film parameters of the polyethylene hot melt film, and determining a heat seal pressure value according to the film parameters; Constructing a control prediction model, synchronizing the film parameters with the heat sealing pressure value to the control prediction model, and outputting a first control signal; Performing heat sealing pressure simulation control on the polyethylene hot melt film according to the first control signal to generate a first simulation control effect; Backtracking feedback is carried out based on the first simulation control effect, a control feedback parameter is generated, the first control signal is dynamically adjusted according to the control feedback parameter, and a second control signal is generated; and sending the second control signal to a control terminal to intelligently control the heat sealing pressure of the polyethylene hot melt film.
2. The heat seal pressure control method of a polyethylene hot-melt film according to claim 1, wherein a plurality of film parameters of the polyethylene hot-melt film are collected, and a heat seal pressure value is determined based on the plurality of film parameters, the method comprising: Constructing a sensing network, and performing data sensing acquisition on the polyethylene hot melt film according to a sensing period through the sensing network to obtain a plurality of film parameters; Performing standardization processing on the film parameters, and extracting a plurality of parameter characteristics according to the film standard parameters; the historical heat sealing pressure data set is called, the plurality of film standard parameters are traversed to be associated with the historical heat sealing pressure data set, and a pressure value database is constructed; And synchronizing the plurality of parameter characteristics as input variables to the pressure value database to determine a heat sealing pressure value, wherein the heat sealing pressure value and the plurality of film parameters have corresponding relations.
3. The method of controlling heat seal pressure of a polyethylene hot melt film according to claim 2, wherein a historical heat seal pressure data set is retrieved, the plurality of film gauge parameters are traversed to correlate with the historical heat seal pressure data set, and a pressure value database is constructed, the method comprising: the historical heat sealing pressure data set is called, and the historical heat sealing pressure data set is heat sealing pressure values of a plurality of production batches; traversing the standard parameters of the films and the heat sealing pressure values of the production batches for control matching, and formulating association rules according to matching results; Correlating the standard parameters of the films with the heat sealing pressure values of the production batches according to the correlation rules, and constructing a parameter-pressure comparison table; and integrating based on the parameter-pressure comparison table, and importing the integration result into the pressure value database.
4. A heat seal pressure control method of a polyethylene hot melt film according to claim 3, wherein a control prediction model is constructed, the plurality of film parameters are synchronized with the heat seal pressure value to the control prediction model, and a first control signal is outputted, the method comprising: Predicting the change of the film parameters by using a time sequence analysis method, and determining the change trend of the film parameters; Setting a target heat sealing pressure value according to the film parameter variation trend and the parameter-pressure comparison table; performing error calculation based on the target heat sealing pressure value and the heat sealing pressure value, generating a heat sealing pressure error value, and constructing an objective function according to the heat sealing pressure error value; and integrating the objective function into the control prediction model to predict, generating a pressure control prediction result, and outputting the first control signal.
5. The heat seal pressure control method of a polyethylene hot melt film according to claim 1, wherein backtracking feedback is performed based on the first analog control effect, a control feedback parameter is generated, the first control signal is dynamically adjusted according to the control feedback parameter, and a second control signal is generated, the method comprising: establishing a feedback mechanism, synchronizing the first simulation control effect to the feedback mechanism for backtracking feedback, and generating a control feedback parameter; activating a control optimizing module based on the control feedback parameters, and performing control analysis on the first control signal through the control optimizing module to generate a plurality of pieces of control influence information, wherein the plurality of pieces of control influence information comprise external control influence information and internal control influence information; Performing weight analysis based on the external control influence information and the internal control influence information to determine a plurality of weight coefficients; The external control influence information and the internal control influence information are arranged in a descending order based on the weight coefficients, and an influence control sequence is generated; And dynamically adjusting the first control signal by the control optimization module according to the influence control sequence in combination with the external control influence information and the internal control influence information to generate the second control signal.
6. The method of claim 5, wherein synchronizing the first analog control effect to the feedback mechanism for retrospective feedback generates a control feedback parameter, the method comprising: Performing error analysis through the feedback mechanism, and judging whether the heat sealing pressure error value of the first control signal is greater than or equal to a preset error index based on the first simulation control effect; if the heat sealing pressure error value of the first control signal is greater than or equal to the preset error index, generating an abnormal label, and marking the heat sealing pressure value based on the abnormal label to generate a heat sealing pressure marking result; Traversing the film parameters according to the heat sealing pressure identification result to carry out backtracking extraction to generate a film abnormal parameter set; And adding the film anomaly parameter set to the control feedback parameter.
7. The method for controlling heat sealing pressure of a polyethylene hot-melt film according to claim 5, wherein the control optimizing module dynamically adjusts the first control signal in accordance with the influence control sequence in combination with the external control influence information and the internal control influence information to generate the second control signal, the method comprising: Analyzing the first control signal through the control optimization module, and calculating the deviation trend of the first control signal; calculating a first optimization step length according to the deviation trend and the external control influence information; calculating a second optimization step length according to the deviation trend and the internal control influence information; Performing data fusion on the first optimization step length and the second optimization step length according to the influence control sequence, and determining a third optimization step length; and dynamically adjusting the first control signal based on the third optimization step length to generate the second control signal.
8. A heat-seal pressure control system for a polyethylene hot-melt film, characterized in that the system is for carrying out the heat-seal pressure control method for a polyethylene hot-melt film according to any one of claims 1 to 7, the system comprising: The numerical value determining module is used for acquiring a plurality of film parameters of the polyethylene hot melt film and determining a heat sealing pressure value according to the film parameters; The first signal output module is used for constructing a control prediction model, synchronizing the film parameters with the heat sealing pressure value to the control prediction model and outputting a first control signal; the simulation control module is used for performing heat sealing pressure simulation control on the polyethylene hot melt film according to the first control signal to generate a first simulation control effect; The dynamic adjustment module is used for carrying out backtracking feedback based on the first simulation control effect, generating a control feedback parameter, and carrying out dynamic adjustment on the first control signal according to the control feedback parameter to generate a second control signal; the intelligent control module is used for sending the second control signal to the control terminal to carry out intelligent control of heat sealing pressure on the polyethylene hot melt film.

Description

Heat sealing pressure control method and device for polyethylene hot melt film Technical Field The application relates to the field of heat sealing pressure control, in particular to a heat sealing pressure control method and device for a polyethylene hot melt film. Background Polyethylene hot melt films are widely used in the packaging industry, especially in food, pharmaceutical and consumer packaging, due to their excellent sealability and cost effectiveness. Heat sealing is a core technology in polyethylene film processing and involves heating the edges of the film to a point of fusion and effecting the seal by applying a certain pressure. Despite the widespread use of heat-seal technology, current heat-seal pressure control systems typically rely on operator experience or fixed set points, resulting in inconsistencies in pressure control across different production batches or ambient conditions. In addition, the heat sealing properties of polyethylene films are extremely sensitive to environmental conditions, such as temperature and humidity changes, and existing systems often lack the ability to adjust pressure in real time, affecting seal quality. These technical limitations not only increase material waste, but also reduce the overall efficiency of the production line. Disclosure of Invention The application solves the technical effects that the traditional heat sealing pressure control system depends on manual experience or fixed set values, causes inconsistency of pressure control under different production batches or environmental conditions, simultaneously lacks the capability of adjusting pressure in real time, influences sealing quality, increases material waste and reduces the overall efficiency of a production line, and achieves the purposes of adopting a sensing technology and a control algorithm to automatically monitor and adjust the heat sealing pressure, realizing the improvement of sealing quality, enhancing the self-adaptive capability on environmental change and improving production efficiency. The application provides a heat sealing pressure control method of a polyethylene hot melt film, which is applied to a heat sealing pressure control device of the polyethylene hot melt film and comprises the steps of collecting a plurality of film parameters of the polyethylene hot melt film, and determining a heat sealing pressure value according to the film parameters; the method comprises the steps of establishing a control prediction model, synchronizing the film parameters with the heat sealing pressure value to the control prediction model, outputting a first control signal, carrying out heat sealing pressure simulation control on the polyethylene hot melt film according to the first control signal to generate a first simulation control effect, carrying out backtracking feedback on the basis of the first simulation control effect to generate a control feedback parameter, carrying out dynamic adjustment on the first control signal according to the control feedback parameter to generate a second control signal, and sending the second control signal to a control terminal to carry out intelligent control on the heat sealing pressure of the polyethylene hot melt film. In a possible implementation mode, a plurality of film parameters of the polyethylene hot-melt film are collected, a heat sealing pressure value is determined according to the film parameters, a sensing network is constructed, the data sensing collection is conducted on the polyethylene hot-melt film according to a sensing period through the sensing network to obtain a plurality of film parameters, the film parameters are subjected to standardization, a plurality of parameter characteristics are extracted according to a plurality of film standard parameters, a historical heat sealing pressure data set is called, the film standard parameters are traversed to be associated with the historical heat sealing pressure data set, a pressure value database is constructed, the parameter characteristics are used as input variables, the heat sealing pressure value is synchronized to the pressure value database, and the heat sealing pressure value and the film parameters have corresponding relations. In a possible implementation manner, a historical heat sealing pressure data set is called, the plurality of film standard parameters and the historical heat sealing pressure data set are traversed to be associated, a pressure value database is built, the historical heat sealing pressure data set is called, heat sealing pressure values of a plurality of production batches are traversed to be matched in a control mode, association rules are formulated according to matching results, the plurality of film standard parameters and the heat sealing pressure values of the plurality of production batches are associated according to the association rules, a parameter-pressure comparison table is built, integration is conducted based on the parameter-pres