A PVC pipe production process control method and system

Abstract

The present invention discloses a PVC pipe production process control method and system, which relates to the technical field of PVC pipe production control. The method comprises: neutralizing static electricity in the pipe cut and inner wall area by using a static elimination nozzle through a third control parameter and a fourth control parameter, simultaneously using a negative pressure vacuum cover to suck away chips in the pipe cut area, using a high-voltage pulse device to blow away chips in the pipe inner wall area, and finally optimizing the surface area static chip elimination environmental impact index through the dynamic adjustment parameter of the conductive brush to obtain the dynamic control parameter of the conductive brush. The dynamic control parameter of the conductive brush is used to complete the removal of chips on the surface of the initial pipe blank during the process of the traction machine conveying the initial pipe blank to the expanding machine, thereby preventing the cutting chips from adhering to the pipe surface due to static electricity generated by friction and cutting during the cutting process of the PVC pipe, affecting the subsequent process flow, and thus affecting the product appearance and the connection and use of the pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of PVC pipe production control, and in particular to a PVC pipe production process control method and system. Background Art

[0002] PVC pipes are pipes made of polyvinyl chloride (PVC) plastic. Due to their corrosion resistance, strong weather resistance, light weight, and easy installation, they are widely used in water supply and drainage, construction, electricity, cable protection, agricultural irrigation and other fields. Depending on their use, PVC pipes can be divided into hard pipes and soft pipes. Hard pipes are mostly used in construction and industrial pipelines, while soft pipes are often used in gardening and agriculture. PVC pipes have a long service life and are lower in cost than metal pipes, and have widely replaced traditional metal pipe materials. The PVC pipe production process control system can optimize the production process and ensure the consistency and pass rate of pipe quality through real-time monitoring and intelligent adjustment of key parameters (such as temperature, pressure, speed, etc.).

[0003] During the cutting process of PVC pipes, static electricity generated by friction and cutting can cause cutting chips to adhere to the pipe surface, which not only affects the subsequent process flow, but may also affect the product appearance and the connection and use of the pipe. However, the chip removal method of the existing PVC pipe production process control system mainly relies on air flow blowing, which cannot completely eliminate the problem of chip adhesion caused by static electricity. In addition, the operation is cumbersome and inefficient. Therefore, it is necessary to provide a PVC pipe production process control method and system to solve the above-mentioned problems. Summary of the Invention

[0004] In order to solve the above technical problems, a PVC pipe production process control method and system are provided. This technical solution solves the problem that the chip removal method of the existing PVC pipe production process control system proposed in the above background technology mainly relies on air flow blowing and cannot completely eliminate the chip adhesion caused by static electricity.

[0005] In order to achieve the above objects, the technical solution adopted by the present invention is:

[0006] A PVC pipe production process control method comprising:

[0007] S100: Obtaining pipe production demand information and pipe production equipment information, and determining pipe production raw material information; obtaining pipe production raw material ratio information based on the pipe production demand information and the pipe production raw material information; and uniformly mixing the pipe production raw materials according to the pipe production raw material ratio information to obtain mixed raw material information;

[0008] S200: Based on the finite element analysis method, obtain the mixed raw material quality index and the first control parameter from the mixed raw material information and the pipe production equipment information, and feed the mixed raw material into the extruder to obtain the initial pipe blank and the initial pipe blank quality index set;

[0009] S300: Determine a second control parameter based on the initial tube blank quality index set. Simultaneously, the initial tube blank is fed into a cutting machine via a tractor. Tube incision information, static electricity accumulation value in the incision area, static chip distribution information in the incision area, and environmental information in the incision area are obtained. A third control parameter is then determined, and static electricity in the incision area is neutralized using an electrostatic neutralization device.

[0010] S400, based on the third control parameter and the pipe cutting information, using the pipe chamfering tool to complete the chamfering, and simultaneously using the negative pressure vacuum hood to suck away the chips;

[0011] S500: Based on the initial tube blank quality index set and the second control parameter, the initial tube blank is transported to the expanding machine using a hauling machine, and information about the tube inner wall, static electricity accumulation value in the inner wall region, static chip distribution information in the inner wall region, and environmental information in the inner wall region are obtained, thereby determining a fourth control parameter, and performing static electricity neutralization on the inner wall region using a static electricity neutralization device;

[0012] S600, using a high-voltage pulse device to blow away electrostatic chips on the inner wall of the pipe to obtain a mid-term pipe blank and obtain a set of mid-term pipe blank quality indices;

[0013] S700: Determine a fifth control parameter based on the mid-stage tube blank quality index set, and transfer the mid-stage tube blank into an oven for heating by turning the rack to obtain a late-stage tube blank. Simultaneously, obtain the late-stage tube blank quality index set.

[0014] S800: Determine a sixth control parameter based on a set of quality indices of the later-stage pipe blanks, and send the later-stage pipe blanks into a spray box for cooling and molding by turning the rack to obtain PVC pipes.

[0015] Preferably, the method of obtaining the mixed raw material quality index and the first control parameter based on the finite element analysis method by using the mixed raw material information and the pipe production equipment information, and feeding the mixed raw material into the extruder to obtain the initial pipe blank and the initial pipe blank quality index set specifically includes:

[0016] Based on the raw material information of pipe production, obtain the physical property information, chemical composition information and melt rheological property information of various pipe production raw materials;

[0017] Obtain basic characteristic indexes corresponding to various pipe production raw materials based on their physical property information, chemical composition information, and melt rheological property information;

[0018] Obtain the interaction index between each pipe production raw material, and combine the basic characteristic indexes corresponding to the various pipe production raw materials to obtain the mixed raw material quality index of the mixed raw materials;

[0019] Based on the mixed raw material information, obtain the thermal property information and mechanical property information of the mixed raw material;

[0020] Obtain the configuration information of the pipe production equipment through the pipe production equipment information, and determine the equipment operation status quality index matrix and the equipment internal status parameters;

[0021] Based on the finite element analysis method, the FEA simulation model is constructed using the thermal and mechanical property information of the mixed raw materials, the equipment operation state quality index matrix and the internal state parameters of the equipment to obtain the melt information of the mixed raw materials in the extruder;

[0022] Obtain the influencing factors of the pipe characteristics based on the melt information and determine the first control parameter;

[0023] Optimizing the extruder control instructions with the first control parameter and setting the pipe blank size information according to the pipe production demand information;

[0024] The material output from the extruder is sized and cooled according to the pipe blank size information to obtain the initial pipe blank;

[0025] Collect the initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information and internal stress information of the initial tube blank;

[0026] The initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information and internal stress information are quantified to obtain a set of initial tube blank quality indexes.

[0027] Preferably, the second control parameter is determined based on the initial tube blank quality index set, and the initial tube blank is fed into the cutting machine by a tractor, and the tube incision information, the static electricity accumulation value of the incision area, the static electricity chip distribution information of the incision area, and the incision area environment information are obtained, and then the third control parameter is determined, and the static electricity neutralization device is used to neutralize the static electricity in the incision area, specifically including:

[0028] According to the initial tube blank quality index set, the influencing factors of the pulling parameters are obtained, and the second control parameters are determined;

[0029] The second control parameter is used to optimize the traction machine control instruction, and the initial tube blank is fed into the cutting machine through the traction machine control instruction;

[0030] Collect the incision morphology information, incision flatness information and edge quality information of the initial pipe blank to obtain the pipe incision information;

[0031] The static electricity accumulation value of the incision area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the incision area;

[0032] Obtaining cutting surface information of the initial tube blank, and determining the center position of the cut section of the initial tube blank using the cutting surface information;

[0033] A three-dimensional space coordinate system is constructed with the center position of the cut section of the initial tube blank as the origin;

[0034] Based on the static electricity accumulation value of the incision area, determining the position information of the incision area and the static electricity chip distribution information of the incision area in the three-dimensional space coordinate system;

[0035] The incision area is divided according to the incision area position information and the electrostatic chip distribution information in the incision area to obtain the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area;

[0036] Based on the three-dimensional space coordinate system, the center point position information of the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area is determined;

[0037] Determine the environmental impact index of electrostatic chip elimination in the incision area based on the environmental information of the incision area, the center point position information of the electrostatic chip dense distribution area, and the electrostatic chip dispersed distribution area;

[0038] Determining the position information of the static neutralization device, and determining the position information of the static elimination nozzle based on the static neutralization device position information;

[0039] According to the center point position information of the electrostatic chip dense distribution area, the center point position information of the electrostatic chip dispersed distribution area and the position information of the static elimination nozzle, the dynamic distance for eliminating the electrostatic chip dense point, the dynamic distance for eliminating the electrostatic chip dispersed point, the dynamic angle for eliminating the electrostatic chip dense point and the dynamic angle for eliminating the electrostatic chip dispersed point are determined;

[0040] Determine the static elimination nozzle movement parameters based on the electrostatic chip elimination environmental impact index of the incision area, the dynamic distance for eliminating static chip concentration points, the dynamic distance for eliminating static chip dispersion points, the dynamic angle for eliminating static chip concentration points, and the dynamic angle for eliminating static chip dispersion points;

[0041] According to the environmental impact index of electrostatic chip elimination in the incision area and the static accumulation value in the incision area, the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area are determined, and the ion injection parameters of the electrostatic elimination nozzle are determined;

[0042] determining a third control parameter based on the static elimination nozzle movement parameter and the static elimination nozzle ion ejection parameter;

[0043] The static electricity neutralization device is adjusted using the third control parameter to neutralize the static electricity in the incision area.

[0044] Preferably, the method of transporting the initial tube blank to the expanding machine using a tractor according to the initial tube blank quality index set and the second control parameter, obtaining tube inner wall information, electrostatic accumulation value of the inner wall region, electrostatic chip distribution information of the inner wall region, and environmental information of the inner wall region, and then determining the fourth control parameter, and neutralizing the inner wall region with electrostatics using an electrostatic neutralization device, specifically includes:

[0045] The second control parameter is used to adjust the traction machine control instruction, and the initial tube blank is sent to the expanding machine through the adjusted traction machine control instruction;

[0046] Collect the inner wall flatness information, inner wall smoothness information and inner wall size information of the initial tube blank to obtain the inner wall information of the tube;

[0047] The static electricity accumulation value of the inner wall area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the inner wall area;

[0048] Based on the inner wall information of the tube, the inner wall surface information of the initial tube blank is obtained, and the inner wall surface model is constructed based on the inner wall surface information;

[0049] Based on the static electricity accumulation value of the inner wall area, the static electricity chip distribution information of the inner wall area is determined in the inner wall surface model;

[0050] The surface model is divided based on the electrostatic chip distribution information of the inner wall area to obtain the surface sub-model;

[0051] Determine the coordinate information of the center point of the surface sub-model in the three-dimensional space coordinate system;

[0052] Determining electrostatic chip distribution information of the curved surface sub-model according to coordinate information of a center point of the curved surface sub-model in a three-dimensional space coordinate system and electrostatic chip distribution information of an inner wall area;

[0053] Based on the coordinate information of the center point of the surface sub-model in the three-dimensional space coordinate system and the position information of the static elimination nozzle, determining the distance value between the center point of each surface sub-model and the static elimination nozzle;

[0054] According to the distance value between the center point of each curved surface sub-model and the static elimination nozzle and the static chip distribution information of the curved surface sub-model, the dynamic distance and dynamic angle of the static chip elimination of the curved surface sub-model are determined;

[0055] Based on the environmental information of the inner wall area and the coordinate information of the center point of the curved surface sub-model in the three-dimensional space coordinate system, the environmental impact index of electrostatic chip elimination of the curved surface sub-model is obtained;

[0056] Based on the surface sub-model electrostatic chip elimination environmental impact index, the surface sub-model electrostatic chip elimination dynamic distance and the surface sub-model electrostatic chip elimination dynamic angle, the surface sub-model electrostatic chip elimination nozzle movement parameters are determined;

[0057] Determine the ion injection parameters of the static elimination nozzle of the curved surface sub-model according to the surface sub-model static chip elimination environmental impact index and the static chip distribution information of the curved surface sub-model, as well as the distance value between the center point of each curved surface sub-model and the static elimination nozzle;

[0058] Determining a fourth control parameter based on the curved surface sub-model static elimination nozzle movement parameter and the curved surface sub-model static elimination nozzle ion injection parameter;

[0059] The fourth control parameter is used to adjust the electrostatic neutralization device to neutralize the electrostatic charge on the inner wall area.

[0060] Preferably, the method further comprises: conveying the initial tube blank to the expanding machine using a tractor based on the initial tube blank quality index set and the second control parameter, obtaining tube inner wall information, static electricity accumulation value of the inner wall region, static electricity chip distribution information of the inner wall region, and environmental information of the inner wall region, thereby determining the fourth control parameter, and neutralizing the inner wall region using a static electricity neutralization device.

[0061] Collecting surface flatness information, surface smoothness information, and surface size information of the initial tube blank to obtain tube surface information;

[0062] The static electricity accumulation value of the surface area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the surface area;

[0063] Based on the surface information of the tube, the surface curve information of the initial tube blank is obtained, and the surface curve model is constructed based on the surface curve information;

[0064] Based on the static electricity accumulation value of the surface area, the static electricity chip distribution information of the surface area is determined in the surface curved surface model;

[0065] The surface model is divided based on the electrostatic chip distribution information of the surface area to obtain the upper surface sub-model and the lower surface sub-model;

[0066] Determine the global maximum point and global minimum point of the upper surface sub-model and the lower surface sub-model in the three-dimensional space coordinate system;

[0067] Obtaining position information of the upper conductive brush and the lower conductive brush in a three-dimensional space coordinate system, and determining the distance value between the upper conductive brush and the global maximum point of the upper curved surface submodel, and the distance value between the lower conductive brush and the global minimum point of the lower curved surface submodel based on the global maximum point and the global minimum point of the upper curved surface submodel and the lower curved surface submodel in the three-dimensional space coordinate system;

[0068] Based on the distance between the upper conductive brush and the global maximum point of the upper curved surface sub-model, the distance between the lower conductive brush and the global minimum point of the lower curved surface sub-model, and the surface area electrostatic chip distribution information, the position information of the upper conductive brush and the lower conductive brush is dynamically adjusted, and the position information of the upper conductive brush and the lower conductive brush is recorded as the conductive brush dynamic adjustment parameter;

[0069] According to the global maximum and minimum points of the upper and lower surface sub-models in the three-dimensional space coordinate system, the surface area environmental information of the initial tube blank is collected, and the surface area electrostatic chip elimination environmental impact index is determined;

[0070] By eliminating the environmental impact index of electrostatic chips in the surface area, the dynamic adjustment parameters of the conductive brush are optimized to obtain the dynamic control parameters of the conductive brush;

[0071] By dynamically controlling the parameters of the conductive brush, the chips on the surface of the initial tube blank are removed during the process of the traction machine conveying the initial tube blank to the expanding machine.

[0072] Preferably, the step of using a high-voltage pulse device to blow away electrostatic chips on the inner wall of the pipe to obtain a mid-term pipe blank and acquiring a set of mid-term pipe blank quality indices specifically includes:

[0073] The mid-term inner wall cleanliness index, mid-term dimensional stability index, mid-term surface quality index, mid-term residual static chip quantity, mid-term static accumulation index and mid-term pipe physical property index of the mid-term pipe blank are collected;

[0074] A mid-term pipe blank quality index set is constructed based on the mid-term inner wall cleanliness index, mid-term dimensional stability index, mid-term surface quality index, mid-term residual static chip quantity, mid-term static accumulation index and mid-term pipe physical property index of the mid-term pipe blank.

[0075] Preferably, the fifth control parameter is determined based on the mid-stage tube blank quality index set, and the mid-stage tube blank is sent into an oven for heating by turning the rack to obtain a late-stage tube blank, and the late-stage tube blank quality index set is obtained at the same time, specifically including:

[0076] The factors influencing rack turning and conveying are determined by combining the mid-term tube blank quality index.

[0077] The fifth control parameter is determined by the rack turning and conveying influencing factor, and the rack turning is adjusted by the fifth control parameter to send the mid-stage tube blank into the oven for heating to obtain the late-stage tube blank;

[0078] Collect the later inner wall cleanliness index, later dimensional stability index, later surface quality index, later residual static chip quantity, later static accumulation index and later pipe physical performance index of the later pipe blank;

[0079] The quality index set of the later pipe blank is constructed based on the later inner wall cleanliness index, later dimensional stability index, later surface quality index, later residual static chip quantity, later static accumulation index and later pipe physical property index of the later pipe blank.

[0080] Furthermore, a PVC pipe production process control system is proposed, which is used to implement any of the control methods described above, including:

[0081] a collection module, the collection module being used to obtain pipe production demand information and pipe production equipment information, and determine pipe production raw material information, collect initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information, and internal stress information of the initial pipe blank, collect incision morphology information, incision flatness information, and edge quality information of the initial pipe blank to obtain pipe incision information, collect inner wall flatness information, inner wall smoothness information, and inner wall size information of the initial pipe blank to obtain pipe inner wall information, collect surface flatness information, surface smoothness information, and surface size information of the initial pipe blank to obtain pipe surface information, and collect a mid-term inner wall cleanliness index, a mid-term dimensional stability index, a mid-term surface quality index, a mid-term residual static chip quantity, a mid-term static accumulation index, and a mid-term pipe physical property index of the mid-term pipe blank;

[0082] A main control module is used to receive data and information transmitted by the acquisition module and perform data processing on the data and information transmitted by the receiving unit. At the same time, based on the results of the data processing and using the finite element analysis method, the module uses the thermal property information and mechanical property information of the mixed raw material, the equipment operation state quality index matrix and the internal state parameters of the equipment to construct an FEA simulation model. A three-dimensional space coordinate system is constructed with the center position of the cut section of the initial pipe blank as the origin. Based on the inner wall information of the pipe, the module obtains the inner wall surface information of the initial pipe blank and constructs an inner wall surface model based on the inner wall surface information. The module is also used to send control parameters to the cleaning module and the pipe production equipment;

[0083] A cleaning module is used to control the static neutralization device to neutralize the static electricity in the cut area, inner wall area and surface area of ​​the tube blank, and control the high-voltage pulse device and the conductive brush to remove chips in the cut area, inner wall area and surface area of ​​the tube blank;

[0084] The display module is provided with a control panel and a display screen for operators to monitor the PVC pipe production process.

[0085] Preferably, the main control module includes:

[0086] A receiving unit, configured to receive data and information transmitted by the acquisition module;

[0087] a data processing unit, configured to process the data and information transmitted by the receiving unit;

[0088] A model building unit is configured to build an FEA simulation model based on a finite element analysis method using thermal and mechanical property information of the mixed raw material, an equipment operating state quality index matrix, and equipment internal state parameters, to construct a three-dimensional coordinate system with the center position of the cut section of the initial tube blank as the origin, to obtain inner wall surface information of the initial tube blank based on the inner wall information of the tube, and to build an inner wall surface model based on the inner wall surface information;

[0089] An instruction issuing unit is used to issue control parameters to the clearing module and the pipe production equipment.

[0090] Preferably, the clearing module includes:

[0091] an electrostatic neutralization unit, the electrostatic neutralization unit being used to control the electrostatic neutralization device to neutralize the electrostatic charge on the cutout area, inner wall area and surface area of ​​the tube blank;

[0092] A chip removal unit is used to control the removal of chips from the incision area, inner wall area and surface area of ​​the high-voltage pulse device and the conductive brush tube blank.

[0093] Compared with the prior art, the present invention has the following beneficial effects:

[0094] This solution proposes a PVC pipe production process control method and system, which obtains pipe incision information, incision area static electricity accumulation value, incision area static electricity chip distribution information and incision area environmental information, and then determines the third control parameter, uses the static electricity neutralization device to neutralize the incision area, and then obtains pipe inner wall information, inner wall area static electricity accumulation value, inner wall area static electricity chip distribution information and inner wall area environmental information, and then determines the fourth control parameter, uses the static electricity neutralization device to neutralize the inner wall area, and uses the third control parameter and the fourth control parameter to eliminate static electricity in the pipe incision and inner wall area using the static electricity elimination nozzle. Static electricity is neutralized, and at the same time, a negative pressure vacuum hood is used to suck away the chips in the pipe cutting area, and a high-voltage pulse device is used to blow away the chips in the inner wall area of ​​the pipe. Finally, the environmental impact index of static electricity chips in the surface area is eliminated through the optimization of the dynamic adjustment parameters of the conductive brush, and the dynamic control parameters of the conductive brush are obtained. The dynamic control parameters of the conductive brush are used to complete the removal of chips on the surface of the initial pipe blank during the process of the traction machine conveying the initial pipe blank to the expanding machine, so as to avoid the static electricity generated by friction and cutting during the cutting process of the PVC pipe, which causes the cutting chips to adhere to the pipe surface and affect the subsequent process flow, thereby affecting the product appearance and the connection and use of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0095] Figure 1 This is a flow chart of a PVC pipe production process control method proposed by the present invention;

[0096] Figure 2 This is a flow chart of using the third control parameter to neutralize static electricity in the incision area in the present invention;

[0097] Figure 3 This is a flow chart of using the fourth control parameter to neutralize static electricity in the inner wall area in the present invention;

[0098] Figure 4 This is a system framework diagram of a PVC pipe production process control system proposed by the present invention. DETAILED DESCRIPTION

[0099] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0100] Reference Figure 1 - Figure 4 As shown, a PVC pipe production process control method includes:

[0101] S100: Obtaining pipe production demand information and pipe production equipment information, and determining pipe production raw material information; obtaining pipe production raw material ratio information based on the pipe production demand information and the pipe production raw material information; and uniformly mixing the pipe production raw materials according to the pipe production raw material ratio information to obtain mixed raw material information;

[0102] S200: Based on the finite element analysis method, obtain the mixed raw material quality index and the first control parameter from the mixed raw material information and the pipe production equipment information, and feed the mixed raw material into the extruder to obtain the initial pipe blank and the initial pipe blank quality index set;

[0103] S300: Determine a second control parameter based on the initial tube blank quality index set. Simultaneously, the initial tube blank is fed into a cutting machine via a tractor. Tube incision information, static electricity accumulation value in the incision area, static chip distribution information in the incision area, and environmental information in the incision area are obtained. A third control parameter is then determined, and static electricity in the incision area is neutralized using an electrostatic neutralization device.

[0104] S400, based on the third control parameter and the pipe cutting information, using the pipe chamfering tool to complete the chamfering, and simultaneously using the negative pressure vacuum hood to suck away the chips;

[0105] S500: Based on the initial tube blank quality index set and the second control parameter, the initial tube blank is transported to the expanding machine using a hauling machine, and information about the tube inner wall, static electricity accumulation value in the inner wall region, static chip distribution information in the inner wall region, and environmental information in the inner wall region are obtained, thereby determining a fourth control parameter, and performing static electricity neutralization on the inner wall region using a static electricity neutralization device;

[0106] S600, using a high-voltage pulse device to blow away electrostatic chips on the inner wall of the pipe to obtain a mid-term pipe blank and obtain a set of mid-term pipe blank quality indices;

[0107] S700: Determine a fifth control parameter based on the mid-stage tube blank quality index set, and transfer the mid-stage tube blank into an oven for heating by turning the rack to obtain a late-stage tube blank. Simultaneously, obtain the late-stage tube blank quality index set.

[0108] S800: Determine a sixth control parameter based on a set of quality indices of the later-stage pipe blanks, and send the later-stage pipe blanks into a spray box for cooling and molding by turning the rack to obtain PVC pipes.

[0109] Specifically, pipe production demand information includes pipe production size information, pipe production quantity information, etc. Pipe production equipment information includes the production equipment used in the pipe production process, such as extruders, cutting machines, traction machines, spray boxes, etc. Pipe production raw material information includes the raw materials required for PVC pipe production, such as PVC resin, plasticizers, etc. In the production process of PVC pipes, the pipe production raw material ratio information is a crucial factor affecting the performance of the pipe (such as strength, toughness, corrosion resistance, aging resistance, etc.). The production ratio of PVC pipes will vary according to different application requirements (such as water supply pipes, drainage pipes, power pipes, industrial pipes, etc.). The mixed raw material information is the information generated by uniformly mixing the pipe production raw materials according to the pipe production raw material ratio information, including thermal property information and mechanical property information of the mixed raw materials, thermal property information such as specific heat capacity, thermal conductivity, etc., and mechanical property information such as tensile strength, elastic modulus, etc.

[0110] Furthermore, based on the finite element analysis method, the mixed raw material information and the pipe production equipment information are used to obtain the mixed raw material quality index and the first control parameter, and the mixed raw material is fed into the extruder to obtain the initial pipe blank and the initial pipe blank quality index set, which specifically includes:

[0111] Based on the raw material information of pipe production, obtain the physical property information, chemical composition information and melt rheological property information of various pipe production raw materials;

[0112] Obtain basic characteristic indexes corresponding to various pipe production raw materials based on their physical property information, chemical composition information, and melt rheological property information;

[0113] Obtain the interaction index between each pipe production raw material, and combine the basic characteristic indexes corresponding to the various pipe production raw materials to obtain the mixed raw material quality index of the mixed raw materials;

[0114] Based on the mixed raw material information, obtain the thermal property information and mechanical property information of the mixed raw material;

[0115] Obtain the configuration information of the pipe production equipment through the pipe production equipment information, and determine the equipment operation status quality index matrix and the equipment internal status parameters;

[0116] Based on the finite element analysis method, the FEA simulation model is constructed using the thermal and mechanical property information of the mixed raw materials, the equipment operation state quality index matrix and the internal state parameters of the equipment to obtain the melt information of the mixed raw materials in the extruder;

[0117] Obtain the influencing factors of the pipe characteristics based on the melt information and determine the first control parameter;

[0118] Optimizing the extruder control instructions with the first control parameter and setting the pipe blank size information according to the pipe production demand information;

[0119] The material output from the extruder is sized and cooled according to the pipe blank size information to obtain the initial pipe blank;

[0120] Collect the initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information and internal stress information of the initial tube blank;

[0121] The initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information and internal stress information are quantified to obtain a set of initial tube blank quality indexes.

[0122] Specifically, the basic characteristic indexes corresponding to various pipe production raw materials include the density, melt flow index, tensile strength, etc. of various pipe production raw materials. In the pipe production process, the interaction index between different raw materials is usually used to evaluate the mutual coordination and compatibility of various raw materials (such as plastics, metals, alloys, fillers, etc.) in the production process, as well as their impact on the performance of the final product. Therefore, the interaction index between each pipe production raw material refers to a measure of the interaction and synergistic effect between raw materials in the pipe production process, usually including chemical compatibility, physical property coordination, etc. The mixed raw material quality index is a measure of the comprehensive quality of the material formed after mixing different raw materials, including raw material uniformity, physical properties, chemical stability, etc.

[0123] The calculation formula of the basic characteristic index is:

[0124]

[0125] Where CFI is the basic characteristic index, ρ is the density of each pipe production raw material, MFI is the melt flow index of each pipe production raw material, σ t is the tensile strength corresponding to each pipe production raw material, σ c is the compressive strength corresponding to each pipe production material, CTE is the thermal expansion coefficient corresponding to each pipe production material, λ is the thermal conductivity corresponding to each pipe production material, w ρ 、w MFI 、 w CTE and w λ These are the weight coefficients of density, melt flow index, tensile strength, compressive strength, thermal expansion coefficient and thermal conductivity corresponding to each pipe production raw material;

[0126] The calculation formula for the interaction index between raw materials in pipe production is:

[0127] II=w1C chem +w2C phys +w3C mech +w4C process ;

[0128] Where, II is the interaction index between raw materials for pipe production, C chem is the chemical compatibility coefficient, C phys is the coefficient of physical property matching, C mech is the synergy coefficient of mechanical properties, C process is the interaction influence coefficient during the processing, w1, w2, w3 and w4 are the weights of each factor;

[0129] The calculation formula of the mixed raw material quality index is:

[0130]

[0131] Where BRMQI is the mixed raw material quality index, C uni is the uniformity coefficient of the mixed raw materials, C phyl is the physical property matching degree of the mixed raw materials, C che is the chemical stability of the mixed raw materials, C mec is the mechanical properties of the mixed raw materials, C pro is the processing performance of the mixed raw materials, μ1 to μ5 are weight coefficients, ∑CFI is the sum of the basic characteristic indexes of all production raw materials, and ∑II is the interaction index between all pipe production raw materials;

[0132] It can be understood that the coefficient of chemical compatibility (such as a value between 0 and 1, the closer to 1, the better the compatibility), the coefficient of physical property matching (such as the matching of density, melting point, etc.), the synergy coefficient of mechanical properties (such as the matching of tensile and compressive strength, etc.), the interaction influence coefficient during the processing process (such as the matching of thermal expansion, thermal conductivity, etc.), w1, w2, w3 and w4 are the weights of each factor, which indicate the degree of influence of different factors on the final interaction index. The setting of weights is usually determined according to actual production needs.

[0133] It can also be understood that the initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information and internal stress information are quantified to obtain the initial tube blank quality index set. For example, the initial size information can be quantified using the formula Among them, L is the length of the tube blank, D is the outer diameter, T is the wall thickness, then C 尺寸 It can be used as the first element in the initial tube blank quality index set.

[0134] Furthermore, based on the initial tube blank quality index set, a second control parameter is determined. Simultaneously, the initial tube blank is fed into a cutting machine via a tractor, and tube incision information, an electrostatic accumulation value in the incision area, electrostatic chip distribution information in the incision area, and incision area environmental information are obtained. A third control parameter is then determined, and an electrostatic neutralization device is used to neutralize static electricity in the incision area. Specifically, the third control parameter is determined.

[0135] According to the initial tube blank quality index set, the influencing factors of the pulling parameters are obtained, and the second control parameters are determined;

[0136] The second control parameter is used to optimize the traction machine control instruction, and the initial tube blank is fed into the cutting machine through the traction machine control instruction;

[0137] Collect the incision morphology information, incision flatness information and edge quality information of the initial pipe blank to obtain the pipe incision information;

[0138] The static electricity accumulation value of the incision area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the incision area;

[0139] Obtaining cutting surface information of the initial tube blank, and determining the center position of the cut section of the initial tube blank using the cutting surface information;

[0140] A three-dimensional space coordinate system is constructed with the center position of the cut section of the initial tube blank as the origin;

[0141] Based on the static electricity accumulation value of the incision area, determining the position information of the incision area and the static electricity chip distribution information of the incision area in the three-dimensional space coordinate system;

[0142] The incision area is divided according to the incision area position information and the electrostatic chip distribution information in the incision area to obtain the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area;

[0143] Based on the three-dimensional space coordinate system, the center point position information of the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area is determined;

[0144] Determine the environmental impact index of electrostatic chip elimination in the incision area based on the environmental information of the incision area, the center point position information of the electrostatic chip dense distribution area, and the electrostatic chip dispersed distribution area;

[0145] Determining the position information of the static neutralization device, and determining the position information of the static elimination nozzle based on the static neutralization device position information;

[0146] According to the center point position information of the electrostatic chip dense distribution area, the center point position information of the electrostatic chip dispersed distribution area and the position information of the static elimination nozzle, the dynamic distance for eliminating the electrostatic chip dense point, the dynamic distance for eliminating the electrostatic chip dispersed point, the dynamic angle for eliminating the electrostatic chip dense point and the dynamic angle for eliminating the electrostatic chip dispersed point are determined;

[0147] Determine the static elimination nozzle movement parameters based on the electrostatic chip elimination environmental impact index of the incision area, the dynamic distance for eliminating static chip concentration points, the dynamic distance for eliminating static chip dispersion points, the dynamic angle for eliminating static chip concentration points, and the dynamic angle for eliminating static chip dispersion points;

[0148] According to the environmental impact index of electrostatic chip elimination in the incision area and the static accumulation value in the incision area, the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area are determined, and the ion injection parameters of the electrostatic elimination nozzle are determined;

[0149] determining a third control parameter based on the static elimination nozzle movement parameter and the static elimination nozzle ion ejection parameter;

[0150] The static electricity neutralization device is adjusted using the third control parameter to neutralize the static electricity in the incision area.

[0151] Furthermore, based on the initial tube blank quality index set and the second control parameter, the initial tube blank is transported to the expanding machine using a hauling machine, and information about the tube inner wall, static electricity accumulation value in the inner wall area, static electricity chip distribution information in the inner wall area, and environmental information in the inner wall area are obtained to determine a fourth control parameter. The static electricity in the inner wall area is neutralized using an electrostatic neutralization device, specifically including:

[0152] The second control parameter is used to adjust the traction machine control instruction, and the initial tube blank is sent to the expanding machine through the adjusted traction machine control instruction;

[0153] Collect the inner wall flatness information, inner wall smoothness information and inner wall size information of the initial tube blank to obtain the inner wall information of the tube;

[0154] The static electricity accumulation value of the inner wall area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the inner wall area;

[0155] Based on the inner wall information of the tube, the inner wall surface information of the initial tube blank is obtained, and the inner wall surface model is constructed based on the inner wall surface information;

[0156] Based on the static electricity accumulation value of the inner wall area, the static electricity chip distribution information of the inner wall area is determined in the inner wall surface model;

[0157] The surface model is divided based on the electrostatic chip distribution information of the inner wall area to obtain the surface sub-model;

[0158] Determine the coordinate information of the center point of the surface sub-model in the three-dimensional space coordinate system;

[0159] Determining electrostatic chip distribution information of the curved surface sub-model according to coordinate information of a center point of the curved surface sub-model in a three-dimensional space coordinate system and electrostatic chip distribution information of an inner wall area;

[0160] Based on the coordinate information of the center point of the surface sub-model in the three-dimensional space coordinate system and the position information of the static elimination nozzle, determining the distance value between the center point of each surface sub-model and the static elimination nozzle;

[0161] According to the distance value between the center point of each curved surface sub-model and the static elimination nozzle and the static chip distribution information of the curved surface sub-model, the dynamic distance and dynamic angle of the static chip elimination of the curved surface sub-model are determined;

[0162] Based on the environmental information of the inner wall area and the coordinate information of the center point of the curved surface sub-model in the three-dimensional space coordinate system, the environmental impact index of electrostatic chip elimination of the curved surface sub-model is obtained;

[0163] Based on the surface sub-model electrostatic chip elimination environmental impact index, the surface sub-model electrostatic chip elimination dynamic distance and the surface sub-model electrostatic chip elimination dynamic angle, the surface sub-model electrostatic chip elimination nozzle movement parameters are determined;

[0164] Determine the ion injection parameters of the static elimination nozzle of the curved surface sub-model according to the surface sub-model static chip elimination environmental impact index and the static chip distribution information of the curved surface sub-model, as well as the distance value between the center point of each curved surface sub-model and the static elimination nozzle;

[0165] Determining a fourth control parameter based on the curved surface sub-model static elimination nozzle movement parameter and the curved surface sub-model static elimination nozzle ion injection parameter;

[0166] The fourth control parameter is used to adjust the electrostatic neutralization device to neutralize the electrostatic charge on the inner wall area.

[0167] Specifically, based on the initial tube blank quality index set, the pulling parameter influencing factor is obtained and the second control parameter is determined. The pulling parameter influencing factor is the influencing factor of the pulling parameters (such as pulling speed, pulling force, pulling temperature, etc.) on the quality, performance, shape and size of the formed product (such as the tube blank) during the tube or metal forming process. The second control parameter is to dynamically adjust parameters such as pulling speed, pulling force and pulling temperature according to the real-time quality evaluation of the tube blank (such as changes in BRMQI).

[0168] It can be understood that the electrostatic elimination nozzle movement parameters control how the nozzle moves during use, as well as the speed and path of the movement. The correct movement parameters can ensure the uniformity and efficiency of the electrostatic elimination process. The electrostatic elimination nozzle ion injection parameters include ion injection voltage, ion injection flow rate, etc. Similarly, the surface sub-model electrostatic elimination nozzle movement parameters and the electrostatic elimination nozzle movement parameters have similar functions, and the surface sub-model electrostatic elimination nozzle ion injection parameters and the electrostatic elimination nozzle ion injection parameters have similar functions.

[0169] Furthermore, based on the initial tube blank quality index set and the second control parameter, the initial tube blank is transported to the expanding machine using a hauling machine, and tube inner wall information, an electrostatic accumulation value of the inner wall region, electrostatic chip distribution information of the inner wall region, and inner wall region environmental information are obtained to thereby determine a fourth control parameter, and electrostatic neutralization is performed on the inner wall region using an electrostatic neutralization device, further comprising:

[0170] Collecting surface flatness information, surface smoothness information, and surface size information of the initial tube blank to obtain tube surface information;

[0171] The static electricity accumulation value of the surface area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the surface area;

[0172] Based on the surface information of the tube, the surface curve information of the initial tube blank is obtained, and the surface curve model is constructed based on the surface curve information;

[0173] Based on the static electricity accumulation value of the surface area, the static electricity chip distribution information of the surface area is determined in the surface curved surface model;

[0174] The surface model is divided based on the electrostatic chip distribution information of the surface area to obtain the upper surface sub-model and the lower surface sub-model;

[0175] Determine the global maximum point and global minimum point of the upper surface sub-model and the lower surface sub-model in the three-dimensional space coordinate system;

[0176] Obtaining position information of the upper conductive brush and the lower conductive brush in a three-dimensional space coordinate system, and determining the distance value between the upper conductive brush and the global maximum point of the upper curved surface submodel, and the distance value between the lower conductive brush and the global minimum point of the lower curved surface submodel based on the global maximum point and the global minimum point of the upper curved surface submodel and the lower curved surface submodel in the three-dimensional space coordinate system;

[0177] Based on the distance between the upper conductive brush and the global maximum point of the upper curved surface sub-model, the distance between the lower conductive brush and the global minimum point of the lower curved surface sub-model, and the surface area electrostatic chip distribution information, the position information of the upper conductive brush and the lower conductive brush is dynamically adjusted, and the position information of the upper conductive brush and the lower conductive brush is recorded as the conductive brush dynamic adjustment parameter;

[0178] According to the global maximum and minimum points of the upper and lower surface sub-models in the three-dimensional space coordinate system, the surface area environmental information of the initial tube blank is collected, and the surface area electrostatic chip elimination environmental impact index is determined;

[0179] By eliminating the environmental impact index of electrostatic chips in the surface area, the dynamic adjustment parameters of the conductive brush are optimized to obtain the dynamic control parameters of the conductive brush;

[0180] By dynamically controlling the parameters of the conductive brush, the chips on the surface of the initial tube blank are removed during the process of the traction machine conveying the initial tube blank to the expanding machine.

[0181] Specifically, the dynamic control parameters of the conductive brush include the dynamic parameters that control the movement of the conductive brush, including the movement mode, contact mode, ion distribution, etc. of the conductive brush, and determine the global maximum and global minimum points of the upper surface sub-model and the lower surface sub-model in the three-dimensional space coordinate system. The global maximum point is a function defined on a certain area. If the function value at this point is greater than or equal to the function value of all other points in the area, then this point is the global maximum point in the area. In other words, at the global maximum point, the value of the function is maximized over the entire domain. Similarly, if the function value of a point is less than or equal to the function value of all other points in the area, then this point is the global minimum point of the area. That is, the function value at this point is minimized over the entire domain.

[0182] Furthermore, a high-voltage pulse device is used to blow away the electrostatic chips on the inner wall of the pipe to obtain a mid-stage pipe blank and obtain a set of mid-stage pipe blank quality indices, specifically including:

[0183] The mid-term inner wall cleanliness index, mid-term dimensional stability index, mid-term surface quality index, mid-term residual static chip quantity, mid-term static accumulation index and mid-term pipe physical property index of the mid-term pipe blank are collected;

[0184] A mid-term pipe blank quality index set is constructed based on the mid-term inner wall cleanliness index, mid-term dimensional stability index, mid-term surface quality index, mid-term residual static chip quantity, mid-term static accumulation index and mid-term pipe physical property index of the mid-term pipe blank.

[0185] Furthermore, a fifth control parameter is determined based on the mid-stage tube blank quality index set, and the mid-stage tube blank is sent into an oven for heating by turning the rack to obtain a late-stage tube blank. At the same time, a late-stage tube blank quality index set is obtained, specifically including:

[0186] The factors influencing rack turning and conveying are determined by combining the mid-term tube blank quality index.

[0187] The fifth control parameter is determined by the rack turning and conveying influencing factor, and the rack turning is adjusted by the fifth control parameter to send the mid-stage tube blank into the oven for heating to obtain the late-stage tube blank;

[0188] Collect the later inner wall cleanliness index, later dimensional stability index, later surface quality index, later residual static chip quantity, later static accumulation index and later pipe physical performance index of the later pipe blank;

[0189] The quality index set of the later pipe blank is constructed based on the later inner wall cleanliness index, later dimensional stability index, later surface quality index, later residual static chip quantity, later static accumulation index and later pipe physical property index of the later pipe blank.

[0190] Furthermore, a PVC pipe production process control system is proposed, which is used to implement any of the control methods described above, including:

[0191] An acquisition module is used to obtain information on pipe production requirements and pipe production equipment, determine information on raw materials for pipe production, collect information on initial size, initial surface quality, initial strength, initial material density, sizing cooling effect, and internal stress of an initial pipe blank, collect information on incision morphology, incision flatness, and edge quality of the initial pipe blank to obtain pipe incision information, collect information on inner wall flatness, inner wall smoothness, and inner wall size of the initial pipe blank to obtain pipe inner wall information, collect information on surface flatness, surface smoothness, and surface size of the initial pipe blank to obtain pipe surface information, and collect information on a mid-term inner wall cleanliness index, a mid-term dimensional stability index, a mid-term surface quality index, a mid-term residual static chip quantity, a mid-term static accumulation index, and a mid-term pipe physical property index of a mid-term pipe blank;

[0192] The main control module is used to receive the data and information transmitted by the acquisition module and process the data and information transmitted by the receiving unit. At the same time, based on the results of data processing and the finite element analysis method, the module uses the thermal and mechanical property information of the mixed raw materials, the equipment operation status quality index matrix and the internal state parameters of the equipment to build an FEA simulation model. The three-dimensional space coordinate system is constructed with the center position of the cut section of the initial tube blank as the origin. Based on the inner wall information of the tube, the inner wall surface information of the initial tube blank is obtained, and the inner wall surface model is constructed based on the inner wall surface information. The module is also used to send control parameters to the cleaning module and the tube production equipment;

[0193] The cleaning module is used to control the static neutralization device to neutralize the static electricity in the cut area, inner wall area and surface area of ​​the pipe blank, and control the high-voltage pulse device and the conductive brush to remove the chips in the cut area, inner wall area and surface area of ​​the pipe blank;

[0194] Display module: The display module is provided with a control panel and a display screen, which is used by operators to monitor the PVC pipe production process.

[0195] Furthermore, the main control module includes:

[0196] A receiving unit, which is used to receive data and information transmitted by the acquisition module;

[0197] A data processing unit, the data processing unit is used to process the data and information transmitted by the receiving unit;

[0198] The model building unit is used to build an FEA simulation model based on the finite element analysis method, using the thermal property information and mechanical property information of the mixed raw materials, the equipment operation state quality index matrix and the internal state parameters of the equipment, and to build a three-dimensional space coordinate system with the center position of the cut section of the initial tube blank as the origin. Based on the inner wall information of the tube, the inner wall surface information of the initial tube blank is obtained, and the inner wall surface model is built based on the inner wall surface information;

[0199] The instruction issuing unit is used to issue control parameters to the cleaning module and pipe production equipment.

[0200] Furthermore, the clearing module includes:

[0201] The static neutralization unit is used to control the static neutralization device to neutralize the static electricity in the cut area, inner wall area and surface area of ​​the pipe blank;

[0202] The chip removal unit is used to control the chips in the cutting area, inner wall area and surface area of ​​the high-voltage pulse device and the conductive brush tube blank to be removed.

[0203] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A PVC pipe production process control method, characterized in that: include: S100: Obtaining pipe production demand information and pipe production equipment information, and determining pipe production raw material information; obtaining pipe production raw material ratio information based on the pipe production demand information and the pipe production raw material information; and uniformly mixing the pipe production raw materials according to the pipe production raw material ratio information to obtain mixed raw material information; S200: Based on the finite element analysis method, obtain the mixed raw material quality index and the first control parameter from the mixed raw material information and the pipe production equipment information, and feed the mixed raw material into the extruder to obtain the initial pipe blank and the initial pipe blank quality index set; S300: Determine a second control parameter based on the initial tube blank quality index set. Simultaneously, the initial tube blank is fed into a cutting machine via a tractor. Tube incision information, static electricity accumulation value in the incision area, static chip distribution information in the incision area, and environmental information in the incision area are obtained. A third control parameter is then determined, and static electricity in the incision area is neutralized using an electrostatic neutralization device. S400, based on the third control parameter and the pipe cutting information, using the pipe chamfering tool to complete the chamfering, and simultaneously using the negative pressure vacuum hood to suck away the chips; S500: Based on the initial tube blank quality index set and the second control parameter, the initial tube blank is transported to the expanding machine using a hauling machine, and information about the tube inner wall, static electricity accumulation value in the inner wall region, static chip distribution information in the inner wall region, and environmental information in the inner wall region are obtained, thereby determining a fourth control parameter, and performing static electricity neutralization on the inner wall region using a static electricity neutralization device; S600, using a high-voltage pulse device to blow away electrostatic chips on the inner wall of the pipe to obtain a mid-term pipe blank and obtain a set of mid-term pipe blank quality indices; S700: Determine a fifth control parameter based on the mid-stage tube blank quality index set, and transfer the mid-stage tube blank into an oven for heating by turning the rack to obtain a late-stage tube blank. Simultaneously, obtain the late-stage tube blank quality index set. S800: Determine a sixth control parameter based on a set of quality indices of the later-stage pipe blanks, and send the later-stage pipe blanks into a spray box for cooling and molding by turning the rack to obtain PVC pipes.

2. A PVC pipe production process control method according to claim 1, characterized in that: The method of obtaining a mixed raw material quality index and a first control parameter based on the finite element analysis method using mixed raw material information and pipe production equipment information, and feeding the mixed raw material into an extruder to obtain an initial pipe blank and a set of initial pipe blank quality indices specifically includes: Based on the raw material information of pipe production, obtain the physical property information, chemical composition information and melt rheological property information of various pipe production raw materials; Obtain basic characteristic indexes corresponding to various pipe production raw materials based on their physical property information, chemical composition information, and melt rheological property information; Obtain the interaction index between each pipe production raw material, and combine the basic characteristic indexes corresponding to the various pipe production raw materials to obtain the mixed raw material quality index of the mixed raw materials; Based on the mixed raw material information, obtain the thermal property information and mechanical property information of the mixed raw material; Obtain the configuration information of the pipe production equipment through the pipe production equipment information, and determine the equipment operation status quality index matrix and the equipment internal status parameters; Based on the finite element analysis method, the FEA simulation model is constructed using the thermal and mechanical property information of the mixed raw materials, the equipment operation state quality index matrix and the internal state parameters of the equipment to obtain the melt information of the mixed raw materials in the extruder; Obtain the influencing factors of the pipe characteristics based on the melt information and determine the first control parameter; Optimizing the extruder control instruction with the first control parameter and setting the pipe blank size information according to the pipe production demand information; The material output from the extruder is sized and cooled according to the pipe blank size information to obtain the initial pipe blank; Collect the initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information and internal stress information of the initial tube blank; The initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information and internal stress information are quantified to obtain a set of initial tube blank quality indexes.

3. A PVC pipe production process control method according to claim 2, characterized in that: The second control parameter is determined based on the initial tube blank quality index set, and the initial tube blank is fed into the cutting machine by a tractor. The tube incision information, the static electricity accumulation value in the incision area, the static electricity chip distribution information in the incision area, and the environmental information of the incision area are obtained, and then the third control parameter is determined. The static electricity in the incision area is neutralized by the static electricity neutralization device, specifically including: According to the initial tube blank quality index set, the influencing factors of the pulling parameters are obtained, and the second control parameters are determined; The second control parameter is used to optimize the traction machine control instruction, and the initial tube blank is fed into the cutting machine through the traction machine control instruction; Collect the incision morphology information, incision flatness information and edge quality information of the initial pipe blank to obtain the pipe incision information; The static electricity accumulation value of the incision area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the incision area; Obtaining cutting surface information of the initial tube blank, and determining the center position of the cut section of the initial tube blank using the cutting surface information; A three-dimensional space coordinate system is constructed with the center position of the cut section of the initial tube blank as the origin; Based on the static electricity accumulation value of the incision area, determining the position information of the incision area and the static electricity chip distribution information of the incision area in the three-dimensional space coordinate system; The incision area is divided according to the incision area position information and the electrostatic chip distribution information in the incision area to obtain the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area; Based on the three-dimensional space coordinate system, the center point position information of the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area is determined; Determine the environmental impact index of electrostatic chip elimination in the incision area based on the environmental information of the incision area, the center point position information of the electrostatic chip dense distribution area, and the electrostatic chip dispersed distribution area; Determining the position information of the static neutralization device, and determining the position information of the static elimination nozzle based on the static neutralization device position information; According to the center point position information of the electrostatic chip dense distribution area, the center point position information of the electrostatic chip dispersed distribution area and the position information of the static elimination nozzle, the dynamic distance for eliminating the electrostatic chip dense point, the dynamic distance for eliminating the electrostatic chip dispersed point, the dynamic angle for eliminating the electrostatic chip dense point and the dynamic angle for eliminating the electrostatic chip dispersed point are determined; Determine the static elimination nozzle movement parameters based on the electrostatic chip elimination environmental impact index of the incision area, the dynamic distance for eliminating static chip concentration points, the dynamic distance for eliminating static chip dispersion points, the dynamic angle for eliminating static chip concentration points, and the dynamic angle for eliminating static chip dispersion points; According to the environmental impact index of electrostatic chip elimination in the incision area and the static accumulation value in the incision area, the electrostatic chip dense distribution area and the electrostatic chip dispersed distribution area are determined, and the ion injection parameters of the electrostatic elimination nozzle are determined; determining a third control parameter based on the static elimination nozzle movement parameter and the static elimination nozzle ion ejection parameter; The static electricity neutralization device is adjusted using the third control parameter to neutralize the static electricity in the incision area.

4. A PVC pipe production process control method according to claim 3, characterized in that: The method comprises the following steps: according to the initial tube blank quality index set and the second control parameter, using a traction machine to transport the initial tube blank to the expanding machine, obtaining tube inner wall information, static electricity accumulation value of the inner wall area, static electricity chip distribution information of the inner wall area, and environmental information of the inner wall area, and then determining a fourth control parameter; and using an electrostatic neutralization device to neutralize static electricity in the inner wall area. The second control parameter is used to adjust the traction machine control instruction, and the initial tube blank is sent to the expanding machine through the adjusted traction machine control instruction; Collect the inner wall flatness information, inner wall smoothness information and inner wall size information of the initial tube blank to obtain the inner wall information of the tube; The static electricity accumulation value of the inner wall area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the inner wall area; Based on the inner wall information of the tube, the inner wall surface information of the initial tube blank is obtained, and the inner wall surface model is constructed based on the inner wall surface information; Based on the static electricity accumulation value of the inner wall area, the static electricity chip distribution information of the inner wall area is determined in the inner wall surface model; The surface model is divided based on the electrostatic chip distribution information of the inner wall area to obtain the surface sub-model; Determine the coordinate information of the center point of the surface sub-model in the three-dimensional space coordinate system; Determining electrostatic chip distribution information of the curved surface sub-model according to coordinate information of a center point of the curved surface sub-model in a three-dimensional space coordinate system and electrostatic chip distribution information of an inner wall area; Based on the coordinate information of the center point of the surface sub-model in the three-dimensional space coordinate system and the position information of the static elimination nozzle, determining the distance value between the center point of each surface sub-model and the static elimination nozzle; According to the distance value between the center point of each curved surface sub-model and the static elimination nozzle and the static chip distribution information of the curved surface sub-model, the dynamic distance and dynamic angle of the static chip elimination of the curved surface sub-model are determined; Based on the environmental information of the inner wall area and the coordinate information of the center point of the curved surface sub-model in the three-dimensional space coordinate system, the environmental impact index of electrostatic chip elimination of the curved surface sub-model is obtained; Based on the surface sub-model electrostatic chip elimination environmental impact index, the surface sub-model electrostatic chip elimination dynamic distance and the surface sub-model electrostatic chip elimination dynamic angle, the surface sub-model electrostatic chip elimination nozzle movement parameters are determined; Determine the ion injection parameters of the static elimination nozzle of the curved surface sub-model according to the surface sub-model static chip elimination environmental impact index and the static chip distribution information of the curved surface sub-model, as well as the distance value between the center point of each curved surface sub-model and the static elimination nozzle; Determining a fourth control parameter based on the curved surface sub-model static elimination nozzle movement parameter and the curved surface sub-model static elimination nozzle ion injection parameter; The fourth control parameter is used to adjust the electrostatic neutralization device to neutralize the electrostatic charge on the inner wall area.

5. A PVC pipe production process control method according to claim 4, characterized in that: The method further includes: conveying the initial tube blank to the expanding machine using a tractor based on the initial tube blank quality index set and the second control parameter, obtaining tube inner wall information, static electricity accumulation value of the inner wall region, static electricity chip distribution information of the inner wall region, and environmental information of the inner wall region, thereby determining a fourth control parameter, and neutralizing static electricity in the inner wall region using an electrostatic neutralization device; Collecting surface flatness information, surface smoothness information, and surface size information of the initial tube blank to obtain tube surface information; The static electricity accumulation value of the surface area is measured by using an electrostatic chip scanner to obtain the static electricity accumulation value of the surface area; Based on the surface information of the tube, the surface curve information of the initial tube blank is obtained, and the surface curve model is constructed based on the surface curve information; Based on the static electricity accumulation value of the surface area, the static electricity chip distribution information of the surface area is determined in the surface curved surface model; The surface model is divided based on the electrostatic chip distribution information of the surface area to obtain the upper surface sub-model and the lower surface sub-model; Determine the global maximum point and global minimum point of the upper surface sub-model and the lower surface sub-model in the three-dimensional space coordinate system; Obtaining position information of the upper conductive brush and the lower conductive brush in a three-dimensional space coordinate system, and determining the distance value between the upper conductive brush and the global maximum point of the upper curved surface submodel, and the distance value between the lower conductive brush and the global minimum point of the lower curved surface submodel based on the global maximum point and the global minimum point of the upper curved surface submodel and the lower curved surface submodel in the three-dimensional space coordinate system; Based on the distance between the upper conductive brush and the global maximum point of the upper curved surface sub-model, the distance between the lower conductive brush and the global minimum point of the lower curved surface sub-model, and the surface area electrostatic chip distribution information, the position information of the upper conductive brush and the lower conductive brush is dynamically adjusted, and the position information of the upper conductive brush and the lower conductive brush is recorded as the conductive brush dynamic adjustment parameter; According to the global maximum and minimum points of the upper and lower surface sub-models in the three-dimensional space coordinate system, the surface area environmental information of the initial tube blank is collected, and the surface area electrostatic chip elimination environmental impact index is determined; By eliminating the environmental impact index of electrostatic chips in the surface area, the dynamic adjustment parameters of the conductive brush are optimized to obtain the dynamic control parameters of the conductive brush; By dynamically controlling the parameters of the conductive brush, the chips on the surface of the initial tube blank are removed during the process of the traction machine conveying the initial tube blank to the expanding machine.

6. A PVC pipe production process control method according to claim 5, characterized in that: The method of using a high-voltage pulse device to blow away the electrostatic chips on the inner wall of the pipe to obtain a mid-term pipe blank and obtaining a set of mid-term pipe blank quality indexes specifically includes: The mid-term inner wall cleanliness index, mid-term dimensional stability index, mid-term surface quality index, mid-term residual static chip quantity, mid-term static accumulation index and mid-term pipe physical property index of the mid-term pipe blank are collected; A mid-term pipe blank quality index set is constructed based on the mid-term inner wall cleanliness index, mid-term dimensional stability index, mid-term surface quality index, mid-term residual static chip quantity, mid-term static accumulation index and mid-term pipe physical property index of the mid-term pipe blank.

7. A PVC pipe production process control method according to claim 6, characterized in that: The fifth control parameter is determined based on the mid-stage tube blank quality index set, and the mid-stage tube blank is sent into an oven for heating by turning the rack to obtain a late-stage tube blank, and the late-stage tube blank quality index set is obtained at the same time, specifically including: The factors influencing rack turning and conveying are determined by the mid-term tube blank quality index set; The fifth control parameter is determined by the rack turning and conveying influencing factor, and the rack turning is adjusted by the fifth control parameter to send the mid-stage tube blank into the oven for heating to obtain the late-stage tube blank; Collect the later inner wall cleanliness index, later dimensional stability index, later surface quality index, later residual static chip quantity, later static accumulation index and later pipe physical performance index of the later pipe blank; The quality index set of the later pipe blank is constructed based on the later inner wall cleanliness index, later dimensional stability index, later surface quality index, later residual static chip quantity, later static accumulation index and later pipe physical property index of the later pipe blank.

8. A PVC pipe production process control system, used to implement the control method according to any one of claims 1 to 7, characterized in that: include: a collection module, the collection module being used to obtain pipe production demand information and pipe production equipment information, and determine pipe production raw material information, collect initial size information, initial surface quality information, initial strength information, initial material density information, sizing cooling effect information, and internal stress information of the initial pipe blank, collect incision morphology information, incision flatness information, and edge quality information of the initial pipe blank to obtain pipe incision information, collect inner wall flatness information, inner wall smoothness information, and inner wall size information of the initial pipe blank to obtain pipe inner wall information, collect surface flatness information, surface smoothness information, and surface size information of the initial pipe blank to obtain pipe surface information, and collect a mid-term inner wall cleanliness index, a mid-term dimensional stability index, a mid-term surface quality index, a mid-term residual static chip quantity, a mid-term static accumulation index, and a mid-term pipe physical property index of the mid-term pipe blank; A main control module is used to receive data and information transmitted by the acquisition module and perform data processing on the data and information transmitted by the receiving unit. At the same time, based on the results of the data processing and using the finite element analysis method, the module uses the thermal property information and mechanical property information of the mixed raw material, the equipment operation state quality index matrix and the internal state parameters of the equipment to construct an FEA simulation model. A three-dimensional space coordinate system is constructed with the center position of the cut section of the initial pipe blank as the origin. Based on the inner wall information of the pipe, the module obtains the inner wall surface information of the initial pipe blank and constructs an inner wall surface model based on the inner wall surface information. The module is also used to send control parameters to the cleaning module and the pipe production equipment; A cleaning module is used to control the static neutralization device to neutralize the static electricity in the cut area, inner wall area and surface area of ​​the tube blank, and control the high-voltage pulse device and the conductive brush to remove chips in the cut area, inner wall area and surface area of ​​the tube blank; The display module is provided with a control panel and a display screen for operators to monitor the PVC pipe production process.

9. A PVC pipe production process control system according to claim 8, characterized in that: The main control module includes: A receiving unit, configured to receive data and information transmitted by the acquisition module; a data processing unit, configured to process the data and information transmitted by the receiving unit; A model building unit is configured to build an FEA simulation model based on a finite element analysis method using thermal and mechanical property information of the mixed raw material, an equipment operating state quality index matrix, and equipment internal state parameters, to construct a three-dimensional coordinate system with the center position of the cut section of the initial tube blank as the origin, to obtain inner wall surface information of the initial tube blank based on the inner wall information of the tube, and to build an inner wall surface model based on the inner wall surface information; An instruction issuing unit is used to issue control parameters to the clearing module and the pipe production equipment.

10. A PVC pipe production process control system according to claim 8, characterized in that: The clearing module includes: an electrostatic neutralization unit, the electrostatic neutralization unit being used to control the electrostatic neutralization device to neutralize the electrostatic charge on the cutout area, inner wall area, and surface area of ​​the tube blank; A chip removal unit is used to control the removal of chips from the incision area, inner wall area and surface area of ​​the high-voltage pulse device and the conductive brush tube blank.

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