PVC-UH drainage pipe flat twin-screw extrusion method and equipment

Abstract

The present application is applicable to the technical field of drain pipes, and in particular, to a method and device for extruding a PVC-UH drain pipe with a flat twin-screw, including: obtaining drain pipe information; wherein the drain pipe information includes information reflecting the physical state of the PVC-UH drain pipe; obtaining status information based on the drain pipe information; wherein the status information includes information reflecting whether the quality of the PVC-UH drain pipe is qualified; obtaining and sending debugging information based on the status information; wherein the debugging information is used to instruct an extrusion device to produce the PVC-UH drain pipe, and the extrusion device is a device capable of producing the PVC-UH drain pipe by means of flat twin-screw extrusion. The method and device provided in the embodiments of the present application can solve the problem that it is difficult for humans to detect internal defects in a timely manner and adjust the extrusion parameters of the extruder to eliminate or reduce the defects of the produced PVC-UH drain pipe.

Description

Technical Field

[0001] The present application belongs to the technical field of drainage pipes, and in particular, relates to a method and equipment for extruding a PVC-UH drainage pipe with a parallel twin screw. Background Art

[0002] Twin-screw extruder is a device that uses two parallel screws to rotate simultaneously to push materials into and out of the extruder. During the extrusion process, the material is pushed into the screw groove through the feed port. As the screw rotates, the material is plasticized, mixed and compressed, and then pushed to the discharge port of the barrel under the action of the screw, and enters the die head for extrusion molding. In the production of PVC-UH drainage pipes, parallel twin-screw extruders play an important role. By accurately controlling parameters such as extrusion temperature, screw speed and pressure, PVC-UH drainage pipe products that meet the requirements can be produced.

[0003] When it is necessary to produce PVC-UH drainage pipe products with thinner walls, defects that affect the service life of the PVC-UH drainage pipes may appear inside or on the surface due to production process problems. However, it is difficult for humans to detect internal defects in time and adjust the extrusion parameters of the extruder to eliminate or reduce the defects of the PVC-UH drainage pipes. Summary of the invention

[0004] The embodiments of the present application provide a PVC-UH drainage pipe parallel twin-screw extrusion method and equipment, which can solve the problem that it is difficult to manually detect internal defects in time and adjust the extrusion parameters of the extruder to eliminate or reduce the defects of the produced PVC-UH drainage pipe.

[0005] In a first aspect, an embodiment of the present application provides a PVC-UH drainage pipe parallel twin-screw extrusion method, comprising:

[0006] Acquire drainage pipe information; wherein the drainage pipe information includes information reflecting the physical state of the PVC-UH drainage pipe;

[0007] Obtaining status information based on the drainage pipe information; wherein the status information includes information reflecting whether the quality of the PVC-UH drainage pipe is qualified;

[0008] Based on the status information, debugging information is obtained and sent; wherein, the debugging information is used to instruct the extrusion equipment to produce the PVC-UH drainage pipe, and the extrusion equipment is a device capable of producing the PVC-UH drainage pipe by flat twin-screw extrusion.

[0009] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0010] The PVC-UH drain pipe flat twin-screw extrusion method provided in the embodiment of the present application can better analyze the produced PVC-UH drain pipe by first obtaining drain pipe information including information reflecting the physical state of the PVC-UH drain pipe, and provide a basis for subsequent steps. Then, based on the drain pipe information, status information including information reflecting whether the quality of the PVC-UH drain pipe is qualified is obtained to judge whether the quality of the produced PVC-UH drain pipe is qualified, so as to avoid the PVC-UH drain pipe of unqualified quality from being put on the market due to the difficulty of manual timely discovery of internal defects, and provide a reference for adjusting the production parameters of the PVC-UH drain pipe. Then, based on the status information, debugging information for instructing the extrusion equipment to produce the PVC-UH drain pipe is obtained and sent, and the extrusion parameters of the extrusion equipment are adjusted to eliminate or reduce the defects of the produced PVC-UH drain pipe, so as to ensure the quality of the produced PVC-UH drain pipe.

[0011] In a possible implementation of the first aspect, before the drain pipe information is obtained, the extrusion equipment can work normally and the extrusion equipment can continuously and stably produce the PVC-UH drain pipe by means of flat twin-screw extrusion, and the produced PVC-UH drain pipe can pass through a cooling device and be normally transported by a traction device; wherein the cooling device is a device that can reduce the temperature of the PVC-UH drain pipe and assist the PVC-UH drain pipe in cooling and solidification, and the traction device is a device that can transport the PVC-UH drain pipe along a preset route.

[0012] In a possible implementation manner of the first aspect, obtaining the drainage pipe information includes:

[0013] Obtain a monitoring time period; wherein the monitoring time period is a numerical value of a period of time;

[0014] Acquiring surface information; wherein the surface information includes information reflecting the physical state of the outer wall surface of the PVC-UH drainage pipe produced during the monitoring time period;

[0015] Acquiring internal information; wherein the internal information includes information reflecting the internal physical structure of the PVC-UH drainage pipe produced during the monitoring time period;

[0016] The surface information and the internal information are confirmed as the drain pipe information.

[0017] In a possible implementation manner of the first aspect, acquiring the surface information includes:

[0018] Acquire a surface image; wherein the surface image is an image of the surface of the PVC-UH drain pipe transmitted by an image acquisition device, and the image acquisition device is a device of the extrusion equipment that can capture and transmit the image of the surface of the PVC-UH drain pipe;

[0019] Input the surface image into an image recognition model to obtain a recognition image; wherein the image recognition model is a data model obtained through machine learning; the recognition image includes the surface image input into the image recognition model and surface defect information annotated on the surface image input into the image recognition model, the surface defect information includes at least one surface defect reflected on the surface of the PVC-UH drainage pipe that affects the service life of the PVC-UH drainage pipe and the corresponding surface defect type and area value, and the surface defect type includes particles, bubbles, scorch marks and depressions;

[0020] A surface defect ratio obtained by adding the number of the surface defects included in the surface defect information and the area of ​​the surface defects included in the surface defect information and dividing the result by the total area of ​​the recognition image is confirmed as the surface information.

[0021] In a possible implementation manner of the first aspect, obtaining the internal information includes:

[0022] Sending an internal detection instruction; wherein the internal detection instruction is used to instruct an internal detection device to detect the internal structure of the PVC-UH drain pipe produced within the monitoring time period, and the internal detection device is a device of the extrusion equipment that can detect whether there are cavities inside the PVC-UH drain pipe and the thickness of the PVC-UH drain pipe;

[0023] Acquire internal defect information; wherein the internal defect information includes information reflecting the number of cavities inside the PVC-UH drainage pipe and the volume of each of the cavities, which is transmitted after the internal detection device detects the internal structure of the PVC-UH drainage pipe produced within the monitoring time period;

[0024] Acquire thickness information; wherein the thickness information includes information about the thickness of the pipe wall of the PVC-UH drainage pipe;

[0025] The internal defect ratio obtained by adding the volumes of the internal voids in the internal defect information and dividing the sum by the total volume of the PVC-UH drainage pipe and the thickness information are confirmed as the internal information.

[0026] In a possible implementation manner of the first aspect, obtaining the status information based on the drain pipe information includes:

[0027] Based on the surface information, first state information is obtained; wherein the first state information includes information reflecting whether the surface quality of the PVC-UH drainage pipe is qualified;

[0028] Based on the internal information, second status information is obtained; wherein the second status information includes information reflecting whether the internal structure of the PVC-UH drainage pipe is qualified;

[0029] If the first state information reflects that the surface quality of the PVC-UH drain pipe is qualified and the second state information reflects that the internal structure of the PVC-UH drain pipe is qualified, the state information reflecting that the production parameters of the extrusion device do not need to be changed is obtained;

[0030] If the first status information reflects that the surface quality of the PVC-UH drain pipe is unqualified and / or the second status information reflects that the internal structure of the PVC-UH drain pipe is unqualified, the status information reflecting the need to change the production parameters is obtained.

[0031] In a possible implementation manner of the first aspect, obtaining the first state information based on the surface information includes:

[0032] Determining whether the number of surface defects in the surface information is greater than or equal to a preset number of surface defects;

[0033] If the number of the surface defects is greater than or equal to the preset number of surface defects, the first status information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained;

[0034] If the number of the surface defects is less than the preset number of surface defects, determining whether the surface defect ratio is greater than or equal to the preset surface defect ratio;

[0035] If the surface defect ratio is greater than or equal to a preset surface defect ratio, the first state information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained;

[0036] If the surface defect ratio is less than a preset surface defect ratio, the first state information reflecting that the surface quality of the PVC-UH drainage pipe is qualified is obtained.

[0037] In a possible implementation manner of the first aspect, obtaining the second state information based on the internal information includes:

[0038] Determining whether the value reflected by the thickness information in the internal information is within the value interval reflected by the preset thickness range;

[0039] If the value reflected by the thickness information is not within the value interval reflected by the preset thickness range, the second state information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained;

[0040] If the value reflected by the thickness information is within the value interval reflected by the preset thickness range, determining whether the internal defect ratio is greater than or equal to the preset internal defect ratio;

[0041] If the internal defect ratio is greater than or equal to a preset internal defect ratio, the second state information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained;

[0042] If the internal defect ratio is less than a preset internal defect ratio, the second state information reflecting that the quality of the PVC-UH drainage pipe is qualified is obtained.

[0043] In a possible implementation manner of the first aspect, obtaining and sending debugging information based on the state information includes:

[0044] If the state information reflects that the production parameters do not need to be changed, the debugging information indicating that no modification is made to the extrusion temperature and the extrusion speed is obtained;

[0045] If the status information reflects that the production parameters need to be changed, the debugging information is obtained based on the maximum surface defect ratio and the maximum internal defect ratio; wherein the maximum surface defect ratio is the surface defect ratio of the PVC-UH drain pipe produced by the extrusion equipment at the maximum extrusion temperature and the maximum extrusion speed of the extrusion process, the maximum internal defect ratio is the internal defect ratio of the PVC-UH drain pipe produced by the extrusion equipment at the maximum extrusion temperature and the maximum extrusion speed, the maximum extrusion temperature is the maximum temperature that the extrusion equipment is allowed to reach when producing the PVC-UH drain pipe according to the extrusion process, and the maximum extrusion speed is the fastest speed that the extrusion equipment is allowed to reach when producing the PVC-UH drain pipe according to the extrusion process.

[0046] In a possible implementation manner of the first aspect, obtaining the debugging information based on the maximum surface defect ratio and the maximum internal defect ratio includes:

[0047] The surface defect ratio is divided by the maximum surface defect ratio and then multiplied by the temperature range value to obtain a temperature control value; wherein the temperature range value is a value obtained by subtracting the minimum extrusion temperature from the maximum extrusion temperature specified in the extrusion process;

[0048] The speed control value is obtained by dividing the internal defect ratio by the maximum internal defect ratio and then multiplying the result by the speed range value; wherein the speed range value is the value obtained by subtracting the minimum extrusion speed from the maximum extrusion speed specified in the extrusion process;

[0049] Determining whether the value reflected by the thickness information is less than the minimum value within the value interval reflected by the preset thickness range;

[0050] If the value reflected by the thickness information is smaller than the minimum value in the value interval reflected by the preset thickness range, first control information is obtained to instruct the extrusion device to subtract the speed control value from the current extrusion speed;

[0051] If the value reflected by the thickness information is greater than the maximum value in the value interval reflected by the preset thickness range, first control information is obtained to instruct the extrusion device to add the speed control value to the current extrusion speed;

[0052] Determining whether the surface defect type includes the scorch mark;

[0053] If the surface defect type includes the scorch mark, obtaining second control information instructing the extrusion device to subtract the temperature control value from the current extrusion temperature;

[0054] If the surface defect type does not include the scorch mark and the surface defect type includes the particle, obtaining second control information instructing the extrusion device to add the temperature control value to the current extrusion temperature;

[0055] The first regulation information and the second regulation information are confirmed as the debugging information.

[0056] In a second aspect, the present application embodiment provides a PVC-UH drainage pipe parallel twin-screw extrusion system, comprising:

[0057] An acquisition unit, configured to acquire drainage pipe information; wherein the drainage pipe information includes information reflecting the physical state of the PVC-UH drainage pipe;

[0058] An analysis unit, configured to obtain status information based on the drainage pipe information; wherein the status information includes information reflecting whether the quality of the PVC-UH drainage pipe is qualified;

[0059] A debugging unit is used to obtain and send debugging information based on the status information; wherein the debugging information is used to instruct the extrusion equipment to produce the PVC-UH drainage pipe, and the extrusion equipment is a device that can produce the PVC-UH drainage pipe by flat twin-screw extrusion.

[0060] In a third aspect, an embodiment of the present application provides a PVC-UH drainage pipe parallel twin-screw extrusion device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any one of the methods described in the first aspect when executing the computer program.

[0061] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the above-mentioned first aspects is implemented.

[0062] In the fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on a PVC-UH drain pipe flat twin-screw extrusion device, the PVC-UH drain pipe flat twin-screw extrusion device enables the PVC-UH drain pipe flat twin-screw extrusion device to perform the PVC-UH drain pipe flat twin-screw extrusion method described in any one of the first aspects above.

[0063] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0065] Figure 1 It is a schematic diagram of a process of a PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0066] Figure 2 It is a schematic flow chart of step S100 in the PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0067] Figure 3 It is a schematic flow chart of step S120 in the PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0068] Figure 4 It is a schematic flow chart of step S130 in the PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0069] Figure 5 It is a schematic flow chart of step S200 in the PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0070] Figure 6 It is a schematic flow chart of step S210 in the PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0071] Figure 7 It is a schematic flow chart of step S220 in the PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0072] Figure 8 It is a schematic flow chart of step S300 in the PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0073] Fig. 9 It is a schematic flow chart of step S320 in the PVC-UH drainage pipe parallel twin-screw extrusion method provided in one embodiment of the present application;

[0074] Fig.10 It is a structural schematic diagram of a PVC-UH drainage pipe parallel twin-screw extrusion system provided in one embodiment of the present application;

[0075] Fig.11 It is a schematic structural diagram of a PVC-UH drainage pipe parallel twin-screw extruder provided in one embodiment of the present application. DETAILED DESCRIPTION

[0076] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0077] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0078] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0079] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0080] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0081] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0082] In the related art, due to production process problems, defects that affect the service life of the PVC-UH drainage pipes may appear inside or on the surface of the produced PVC-UH drainage pipes. However, it is difficult for humans to detect internal defects in time and adjust the extrusion parameters of the extrusion equipment to eliminate or reduce the defects of the produced PVC-UH drainage pipes.

[0083] To solve the above problems, the embodiment of the present application provides a PVC-UH drain pipe flat twin-screw extrusion method and equipment. In this method, by first obtaining drain pipe information including information reflecting the physical state of the PVC-UH drain pipe, the produced PVC-UH drain pipe can be better analyzed to provide a basis for subsequent steps. Then, based on the drain pipe information, status information including information reflecting whether the quality of the PVC-UH drain pipe is qualified is obtained to judge whether the quality of the produced PVC-UH drain pipe is qualified, so as to avoid the PVC-UH drain pipe with unqualified quality from being put on the market due to the difficulty of manual detection of internal defects in time, and provide a reference for adjusting the production parameters of the PVC-UH drain pipe. Then, based on the status information, debugging information for instructing the extrusion equipment to produce the PVC-UH drain pipe is obtained and sent, and the extrusion parameters of the extruder are adjusted to eliminate or reduce the defects of the produced PVC-UH drain pipe, thereby ensuring the quality of the produced PVC-UH drain pipe.

[0084] The PVC-UH drain pipe flat twin-screw extrusion method provided in the embodiment of the present application can be applied to a PVC-UH drain pipe flat twin-screw extrusion device. At this time, the PVC-UH drain pipe flat twin-screw extrusion device is the executor of the PVC-UH drain pipe flat twin-screw extrusion method provided in the embodiment of the present application. The embodiment of the present application does not impose any restrictions on the specific type of the PVC-UH drain pipe flat twin-screw extrusion device.

[0085] For example, a PVC-UH drain pipe flat twin-screw extrusion device may include a control device, an extrusion device, an image acquisition device, an internal detection device, a traction device and a cooling device. The control device is respectively connected to the extrusion device, the traction device and the cooling device for communication. The extrusion device is a device that can produce PVC-UH drain pipes by flat twin-screw extrusion. For example, the extrusion device may include a screw, a barrel, a transmission device, a heating and cooling device, a feeding device, a mold and a shaping device, and a cutting device, but not limited thereto. The image acquisition device is a device that can take a surface image of a PVC-UH exhaust pipe. For example, the image acquisition device may be a digital camera or an analog camera, but not limited thereto. The internal detection device is a device that can detect the internal structure of the PVC-UH exhaust pipe. For example, the internal detection device may be an ultrasonic scanning device, an X-ray scanning device, etc., but not limited thereto. The traction device is a device that can transport the PVC-UH drain pipe according to a preset route. For example, the traction device may be a crawler traction machine, a pipeline moving device, etc., but not limited thereto. The cooling device is a device that can reduce the temperature of the PVC-UH drain pipe and assist the PVC-UH drain pipe in cooling and solidification. For example, the cooling device can be a cooling long water tank, a constant temperature water tank, etc., but is not limited thereto.

[0086] In order to better understand the PVC-UH drainage pipe parallel twin-screw extrusion method provided in the embodiment of the present application, the specific implementation process of the PVC-UH drainage pipe parallel twin-screw extrusion method provided in the embodiment of the present application is exemplarily introduced below.

[0087] Figure 1 A schematic flow chart of a PVC-UH drain pipe flat twin-screw extrusion method provided in an embodiment of the present application is shown. The PVC-UH drain pipe flat twin-screw extrusion method comprises:

[0088] S100, obtaining drainage pipe information; wherein the drainage pipe information includes information reflecting the physical state of the PVC-UH drainage pipe.

[0089] It is understood that the way to obtain the drainage pipe information may be to receive data transmitted by the user, or to obtain the surface image and internal structure information of the drainage pipe and then analyze it, but it is not limited thereto. Obtaining drainage pipe information reflecting the physical state of the PVC-UH drainage pipe can better analyze the produced PVC-UH drainage pipe and provide a basis for subsequent steps.

[0090] In one possible implementation, at S100, before obtaining the drain pipe information, the extrusion equipment can work normally and the extrusion equipment can continuously and stably produce PVC-UH drain pipes by means of flat twin-screw extrusion, and the produced PVC-UH drain pipes can pass through a cooling device and be normally transported by a traction device; wherein the cooling device is a device that can reduce the temperature of the PVC-UH drain pipe and assist in cooling and solidifying the PVC-UH drain pipe, and the traction device is a device that can transport the PVC-UH drain pipe according to a preset route.

[0091] It can be understood that ensuring that the extrusion equipment can work normally and that the extrusion equipment can continuously and stably produce PVC-UH drain pipes by means of flat twin-screw extrusion, and that the produced PVC-UH drain pipes can pass through a cooling device and be normally transported by a traction device can avoid the influence of unstable factors (temperature not yet reaching production requirements, PVC-UH material not yet evenly mixed, etc.) during the production of PVC-UH drain pipes on this method, thereby improving the reliability of this method.

[0092] In one possible implementation, see Figure 2 , S100, obtain drainage pipe information, including:

[0093] S110, obtaining a monitoring time period; wherein the monitoring time period is a numerical value of a period of time.

[0094] It is understandable that the monitoring time period may be 5 minutes, 10 minutes, etc., but is not limited thereto. Obtaining the monitoring time period can expand the scope of the obtained analysis samples and better analyze the physical state of the produced PVC-UH drainage pipes.

[0095] S120, obtaining surface information; wherein the surface information includes information reflecting the physical state of the outer wall surface of the PVC-UH drainage pipe produced within the monitoring time period.

[0096] It can be understood that the surface information can be obtained by receiving data transmitted by a user, or by receiving and analyzing data transmitted by an image acquisition device, etc., but is not limited thereto. Acquiring surface information reflecting the physical state of the outer wall surface of the PVC-UH drainage pipe produced during the monitoring period can provide a basis for analyzing the physical state of the produced PVC-UH drainage pipe.

[0097] In one possible implementation, see Figure 3 , S120, obtaining surface information, including:

[0098] S121, acquiring a surface image; wherein the surface image is an image of the surface of the PVC-UH drain pipe transmitted by an image acquisition device, and the image acquisition device is a device of an extrusion device that can capture and transmit an image of the surface of the PVC-UH drain pipe.

[0099] It is understood that the surface image can be obtained by receiving data transmitted by a user or by receiving data transmitted by an image acquisition device, but is not limited thereto. Obtaining a surface image reflecting the surface of the PVC-UH drain pipe can provide a basis for subsequent steps.

[0100] S122, inputting the surface image into an image recognition model to obtain a recognition image; wherein the image recognition model is a data model obtained through machine learning; the recognition image includes the surface image input into the image recognition model and surface defect information annotated on the surface image input into the image recognition model, the surface defect information includes at least one surface defect reflected on the surface of the PVC-UH drainage pipe that affects the service life of the PVC-UH drainage pipe and the corresponding surface defect type and area value, and the surface defect types include particles, bubbles, scorch marks and depressions.

[0101] It can be understood that the image recognition model is obtained through machine learning training using multiple sets of data, and the multiple sets of data include first-class data and second-class data. Each set of data in the first class includes: a surface image including at least one surface defect, and the surface defect type and area value of the surface defect in the surface image manually analyzed and identified. Each set of data in the second class includes: a surface image not including surface defects and a label manually identifying that the surface image does not include surface defects. Compared with manual judgment, the recognition image obtained through the image recognition model can be more accurate and efficient, thereby improving processing efficiency.

[0102] S123, a surface defect ratio obtained by adding the number of surface defects included in the surface defect information and the area of ​​the surface defects included in the surface defect information and dividing the result by the total area of ​​the recognition image is confirmed as the surface information.

[0103] It can be understood that the total area of ​​the recognition image can be obtained by obtaining the area data marked by the user on the recognition image, or by calculating the pixel value occupied by the recognition image, but is not limited thereto. The surface defect ratio obtained by adding the number of surface defects included in the surface defect information and the area of ​​the surface defects included in the surface defect information and dividing by the total area of ​​the recognition image is confirmed as surface information, which can provide a basis for subsequent steps.

[0104] For example, assuming that the surface defect information includes 5 surface defects, the area of ​​each surface defect is 500 pixels, and the total area of ​​the recognized image is 20,000 pixels, then the surface defect ratio = (5*500) / 20,000 = 0.125, and the surface information includes that the number of surface defects is 5 and the surface defect ratio is 0.125.

[0105] S130, obtaining internal information; wherein the internal information includes information reflecting the internal physical structure of the PVC-UH drainage pipe produced during the monitoring period.

[0106] It is understood that the method of obtaining the internal information may be receiving data transmitted by a user, or receiving and analyzing data transmitted by an internal detection device, etc., but is not limited thereto. Obtaining the internal information reflecting the internal physical structure of the PVC-UH drainage pipe produced during the monitoring period can determine whether the internal structure of the produced PVC-UH drainage pipe meets expectations, providing a basis for subsequent steps.

[0107] In one possible implementation, see Figure 4 , S130, obtain internal information, including:

[0108] S131, sending an internal detection instruction; wherein the internal detection instruction is used to instruct the internal detection device to detect the internal structure of the PVC-UH drainage pipe produced within the monitoring time period, and the internal detection device is a device of the extrusion equipment that can detect whether there are cavities inside the PVC-UH drainage pipe and the thickness of the PVC-UH drainage pipe.

[0109] It can be understood that sending an internal inspection instruction to instruct the internal inspection device to inspect the internal structure of the PVC-UH drain pipe produced within the monitoring time period can ensure that the obtained data corresponds to the produced PVC-UH drain pipe, providing a basis for subsequent steps.

[0110] S132, obtaining internal defect information; wherein the internal defect information includes information reflecting the number of internal voids in the PVC-UH drainage pipe and the volume of each internal void, which is transmitted after the internal detection device detects the internal structure of the PVC-UH drainage pipe produced within the monitoring time period.

[0111] It can be understood that the method of obtaining internal defect information can be to receive data transmitted by the user, or to receive ultrasonic waves emitted by an internal detection device through an ultrasonic probe. When ultrasonic waves encounter defects such as cavities during propagation in the PVC-UH drainage pipe, they will be reflected, refracted and scattered, resulting in changes in acoustic parameters (such as acoustic time, amplitude, main frequency, etc.). After the internal detection device receives the reflected ultrasonic wave (echo), it analyzes the acoustic parameters of the echo signal to obtain the location and size of the cavity (the cavity area will show characteristics such as extended acoustic time, decreased amplitude, reduced main frequency, and waveform distortion) and then transmits data, etc., but is not limited to this. Obtaining internal defect information including information reflecting the number of cavities inside the PVC-UH drainage pipe and the volume of each internal cavity can better determine whether the internal structure of the produced PVC-UH drainage pipe meets expectations and provide a basis for subsequent steps.

[0112] S133, obtaining thickness information; wherein the thickness information includes information on the thickness of the pipe wall of the PVC-UH drainage pipe.

[0113] It can be understood that the method of obtaining thickness information can be to receive data transmitted by the user, or to receive ultrasonic pulses emitted by an internal detection device through an ultrasonic thickness measuring probe, the pulses propagate inside the tested PVC-UH drainage pipe and are reflected back to the probe at the material interface, the internal detection device receives the reflected wave and calculates the propagation time, and calculates the thickness value according to the sound speed and time and then transmits the data, etc., but is not limited thereto. Obtaining thickness information including information on the thickness of the pipe wall of the PVC-UH drainage pipe can provide a basis for subsequent steps.

[0114] S134, the internal defect ratio and thickness information obtained by adding the volumes of the internal voids in the internal defect information and dividing the sum by the total volume of the PVC-UH drainage pipe are confirmed as the internal information.

[0115] It can be understood that the total volume of the PVC-UH drainage pipe can be obtained by receiving data transmitted by the user, or by receiving data transmitted by the internal detection device after detecting the produced PVC-UH drainage pipe, etc., but it is not limited thereto. The internal defect ratio and thickness information obtained by adding the volumes of the internal voids in the internal defect information and dividing by the total volume of the PVC-UH drainage pipe are confirmed as internal information, which can provide a basis for judging whether the quality of the produced PVC-UH drainage pipe is qualified.

[0116] For example, assuming that the volumes of the internal voids in the internal defect information are 500 pixels, 300 pixels, and 800 pixels respectively, the total volume of the PVC-UH drain pipe is 30,000 pixels, and the thickness of the PVC-UH drain pipe is 2,000 pixels, then the internal defect ratio = (500 + 300 + 800) / 30,000 = 0.08, and the internal information includes a thickness of 2,000 pixels and an internal defect ratio = 0.08.

[0117] S140, confirming the surface information and the internal information as drainage pipe information.

[0118] It can be understood that confirming the surface information and internal information as the drainage pipe information can better analyze the produced PVC-UH drainage pipes and provide a basis for subsequent steps.

[0119] S200, obtaining status information based on the drainage pipe information; wherein the status information includes information reflecting whether the quality of the PVC-UH drainage pipe is qualified.

[0120] It is understood that the state information can be obtained by receiving data sent by the user after making a judgment on the drainage pipe information, or by analyzing the surface information and internal information in the drainage pipe information, etc., but is not limited thereto. The state information including information reflecting whether the quality of the PVC-UH drainage pipe is qualified based on the drainage pipe information can prevent the PVC-UH drainage pipes with unqualified quality from being put on the market due to the difficulty of timely finding internal defects manually, and provide a reference for adjusting the production parameters of the PVC-UH drainage pipes.

[0121] In one possible implementation, see Figure 5 , S200, obtaining status information based on the drainage pipe information, including:

[0122] S210, obtaining first status information based on the surface information; wherein the first status information includes information reflecting whether the surface quality of the PVC-UH drainage pipe is qualified.

[0123] It can be understood that the first state information can be obtained based on the surface information by analyzing the number of surface defects in the surface information or the total area of ​​surface defects in the surface information, but is not limited thereto. The first state information including information reflecting whether the surface quality of the PVC-UH drain pipe is qualified based on the surface information can provide a basis for judging whether the quality of the produced PVC-UH drain pipe is qualified and adjusting the production parameters of the PVC-UH drain pipe.

[0124] In one possible implementation, see Figure 6 , S210, obtaining first state information based on the surface information, including:

[0125] S211, determining whether the number of surface defects in the surface information is greater than or equal to a preset number of surface defects.

[0126] It can be understood that the preset number of surface defects is a criterion for judging whether the number of defects on the surface of the produced PVC-UH drainage pipe is within a normal range. For example, the preset number of surface defects can be 10, 20, etc., but is not limited thereto. Judging whether the number of surface defects in the surface information is greater than or equal to the preset number of surface defects is to judge whether the quality of the produced PVC-UH drainage pipe is qualified.

[0127] S212: If the number of surface defects is greater than or equal to the preset number of surface defects, first status information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained.

[0128] It can be understood that if the number of surface defects is greater than or equal to the preset number of surface defects, it means that there are too many defects on the surface of the produced PVC-UH drainage pipe and the quality of the produced PVC-UH drainage pipe is unqualified.

[0129] S213: If the number of surface defects is less than the preset number of surface defects, determine whether the surface defect ratio is greater than or equal to the preset surface defect ratio.

[0130] It can be understood that the preset surface defect ratio is a criterion for judging whether the area occupied by the defects on the surface of the produced PVC-UH drainage pipe is greater than the user's expectation, and can be preset according to actual conditions or needs. For example, the preset surface defect ratio can be 0.005, 0.03, etc., but is not limited thereto. If the number of surface defects is less than the preset number of surface defects, it means that the number of defects on the surface of the produced PVC-UH drainage pipe is within expectations. Whether the quality of the produced PVC-UH drainage pipe is qualified is judged by judging whether the surface defect ratio is greater than or equal to the preset surface defect ratio.

[0131] S214: If the surface defect ratio is greater than or equal to a preset surface defect ratio, first status information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained.

[0132] It can be understood that if the surface defect ratio is greater than or equal to the preset surface defect ratio, it means that the area occupied by the defects on the surface of the produced PVC-UH drainage pipe is greater than the user's expectations, and the quality of the produced PVC-UH drainage pipe is unqualified.

[0133] S215: If the surface defect ratio is less than a preset surface defect ratio, first status information reflecting that the surface quality of the PVC-UH drainage pipe is qualified is obtained.

[0134] It can be understood that if the surface defect ratio is less than the preset surface defect ratio, it means that the area occupied by the defects on the surface of the produced PVC-UH drainage pipe is within the user's expectations, and the surface quality of the produced PVC-UH drainage pipe is qualified.

[0135] S220, obtaining second status information based on the internal information; wherein the second status information includes information reflecting whether the internal structure of the PVC-UH drainage pipe is qualified.

[0136] It can be understood that the second state information can be obtained by determining the numerical value of the internal defect ratio included in the internal information, or by determining the numerical value reflected by the thickness information included in the internal information, etc., but is not limited thereto. The second state information including information reflecting whether the internal structure of the PVC-UH drain pipe is qualified based on the internal information can provide a basis for determining whether the quality of the produced PVC-UH drain pipe is qualified and adjusting the production parameters of the PVC-UH drain pipe.

[0137] In one possible implementation, see Figure 7 , S220, obtaining second state information based on the internal information, including:

[0138] S221, determining whether the value reflected by the thickness information in the internal information is within the value interval reflected by the preset thickness range.

[0139] It can be understood that the preset thickness range is a criterion for judging whether the thickness of the produced PVC-UH drainage pipe is too thick or too thin, which can be set by the user or the thickness range specified in the production process, but is not limited thereto. Judging whether the value reflected by the thickness information in the internal information is within the value interval reflected by the preset thickness range is to judge whether the quality of the produced PVC-UH drainage pipe is qualified.

[0140] S222: If the value reflected by the thickness information is not within the value interval reflected by the preset thickness range, second status information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained.

[0141] It can be understood that if the value reflected by the thickness information is not within the value interval reflected by the preset thickness range, it means that the wall thickness of the produced PVC-UH drainage pipe is too thick or too thin, and the quality of the produced PVC-UH drainage pipe is unqualified.

[0142] S223, if the value reflected by the thickness information is within the value interval reflected by the preset thickness range, determine whether the internal defect ratio is greater than or equal to the preset internal defect ratio.

[0143] It can be understood that if the value reflected by the thickness information is within the value interval reflected by the preset thickness range, it means that the wall thickness of the produced PVC-UH drainage pipe meets the user's expectations. The quality of the produced PVC-UH drainage pipe can be judged by further judging whether the internal defect ratio is greater than or equal to the preset internal defect ratio.

[0144] S224, if the internal defect ratio is greater than or equal to the preset internal defect ratio, the second state information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained.

[0145] It can be understood that the preset internal defect ratio is a criterion for judging whether the volume occupied by the defects inside the produced PVC-UH drainage pipe will affect the service life of the PVC-UH drainage pipe. If the internal defect ratio is greater than or equal to the preset internal defect ratio, it means that the volume occupied by the defects inside the produced PVC-UH drainage pipe will affect the service life of the PVC-UH drainage pipe, and the quality of the produced PVC-UH drainage pipe is unqualified.

[0146] S225, if the internal defect ratio is less than the preset internal defect ratio, the second state information reflecting that the quality of the PVC-UH drainage pipe is qualified is obtained.

[0147] It can be understood that if the internal defect ratio is less than the preset internal defect ratio, it means that the volume occupied by the defects inside the produced PVC-UH drainage pipe will not affect the service life of the PVC-UH drainage pipe, and the produced PVC-UH drainage pipe is of qualified quality.

[0148] S230, if the first state information reflects that the surface quality of the PVC-UH drain pipe is qualified and the second state information reflects that the internal structure of the PVC-UH drain pipe is qualified, then state information reflecting that the production parameters of the extrusion equipment do not need to be changed is obtained.

[0149] It can be understood that if the first status information reflects that the surface quality of the PVC-UH drain pipe is qualified and the second status information reflects that the internal structure of the PVC-UH drain pipe is qualified, it means that controlling the extrusion equipment to produce PVC-UH drain pipes according to the current production parameters can make the produced PVC-UH drain pipes meet the user's expectations, the produced PVC-UH drain pipes are of qualified quality, and there is no need to change the production parameters of the PVC-UH drain pipes.

[0150] S240, if the first status information reflects that the surface quality of the PVC-UH drainage pipe is unqualified and / or the second status information reflects that the internal structure of the PVC-UH drainage pipe is unqualified, status information reflecting that the production parameters need to be changed is obtained.

[0151] It can be understood that if the first status information reflects that the surface quality of the PVC-UH drain pipe is unqualified and / or the second status information reflects that the internal structure of the PVC-UH drain pipe is unqualified, it means that controlling the extrusion equipment to produce PVC-UH drain pipes according to the current production parameters cannot make the produced PVC-UH drain pipes meet the user's expectations, the quality of the produced PVC-UH drain pipes is unqualified, and the production parameters of the PVC-UH drain pipes need to be changed.

[0152] S300, obtaining and sending debugging information based on the status information; wherein the debugging information is used to instruct the extrusion equipment to produce PVC-UH drainage pipes, and the extrusion equipment is a device capable of producing PVC-UH drainage pipes by means of parallel twin-screw extrusion.

[0153] It is understood that the method of obtaining the debugging information based on the status information may be to receive data transmitted after the user makes a judgment on the status information, or to judge whether the status information reflects the need to change the production parameters, etc., but is not limited thereto. The debugging information for instructing the extrusion equipment to produce the PVC-UH drainage pipe is obtained and sent based on the status information, and the extrusion parameters of the extrusion equipment can be adjusted to eliminate or reduce the defects of the produced PVC-UH drainage pipe, thereby ensuring the quality of the produced PVC-UH drainage pipe.

[0154] In one possible implementation, see Figure 8 , S300, obtaining and sending debugging information based on the state information, including:

[0155] S310, if the status information reflects that the production parameters do not need to be changed, then debugging information indicating that no modification is made to the extrusion temperature and the extrusion speed is obtained.

[0156] It can be understood that if the status information reflects that there is no need to change the production parameters, it means that the extrusion equipment can produce PVC-UH drain pipes at the current extrusion temperature and extrusion speed so that the produced PVC-UH drain pipes meet the user's expectations, and the produced PVC-UH drain pipes are of qualified quality, and there is no need to change the extrusion temperature and extrusion speed of the extrusion equipment.

[0157] S320, if the status information reflects that the production parameters need to be changed, debugging information is obtained based on the maximum surface defect ratio and the maximum internal defect ratio; wherein the maximum surface defect ratio is the surface defect ratio of the PVC-UH drain pipe produced by the extrusion equipment at the maximum extrusion temperature and the maximum extrusion speed of the extrusion process, the maximum internal defect ratio is the internal defect ratio of the PVC-UH drain pipe produced by the extrusion equipment at the maximum extrusion temperature and the maximum extrusion speed, the maximum extrusion temperature is the maximum temperature that the extrusion equipment is allowed to reach when producing the PVC-UH drain pipe according to the extrusion process, and the maximum extrusion speed is the fastest speed that the extrusion equipment is allowed to reach when producing the PVC-UH drain pipe according to the extrusion process.

[0158] It can be understood that the maximum surface defect ratio can be determined by receiving data transmitted by the user, or by obtaining and analyzing the surface image of the PVC-UH drain pipe produced by the extrusion equipment at the maximum extrusion temperature and the maximum extrusion speed, etc., but it is not limited thereto. The maximum internal defect ratio can be determined by receiving data transmitted by the user, or by receiving data transmitted after the internal detection device detects the PVC-UH drain pipe produced by the equipment at the maximum extrusion temperature and the maximum extrusion speed, etc., but it is not limited thereto. The way to obtain debugging information based on the maximum surface defect ratio and the maximum internal defect ratio can be the value obtained by adding or subtracting the surface defect ratio divided by the maximum surface defect ratio to the extrusion temperature of the current extrusion equipment and then multiplying it by the temperature range value, or the value obtained by adding or subtracting the internal defect ratio divided by the maximum internal defect ratio to the extrusion speed of the current extrusion equipment and then multiplying it by the speed range value, etc., but it is not limited thereto. Obtaining debugging information based on the maximum surface defect ratio and the maximum internal defect ratio can ensure that the change of production parameters can make the quality of the PVC-UH drain pipe produced by the production equipment meet the expectations of the user and ensure the quality of the produced PVC-UH drain pipe.

[0159] In one possible implementation, see Fig. 9 In step S320, debugging information is obtained based on the maximum surface defect ratio and the maximum internal defect ratio, including:

[0160] S321, dividing the surface defect ratio by the maximum surface defect ratio and then multiplying the result by the temperature range value to obtain a temperature control value; wherein the temperature range value is a value obtained by subtracting the minimum extrusion temperature from the maximum extrusion temperature specified in the extrusion process.

[0161] It can be understood that dividing the surface defect ratio by the maximum surface defect ratio and then multiplying it by the temperature range value to obtain the temperature control value can ensure that the obtained temperature control value complies with the production process, avoid the occurrence of excessively high or low temperatures, and ensure the quality of the produced PVC-UH drainage pipes.

[0162] For example, assuming that the surface defect ratio is 0.05, the maximum surface defect ratio is 0.1, and the temperature range is 40 degrees, the temperature control value = (0.05 / 0.1) * 40 = 20 degrees.

[0163] S322, dividing the internal defect ratio by the maximum internal defect ratio and then multiplying the result by the speed range value to obtain a speed control value; wherein the speed range value is a value obtained by subtracting the minimum extrusion speed from the maximum extrusion speed specified in the extrusion process.

[0164] It can be understood that dividing the internal defect ratio by the maximum internal defect ratio and then multiplying it by the speed range value to obtain the speed control value can ensure that the obtained speed control value complies with the production process, avoid the situation of too fast or too slow speed, and ensure the quality of the produced PVC-UH drainage pipe.

[0165] For example, assuming that the internal defect ratio is 0.06, the maximum internal defect ratio is 0.1, and the speed range is 50 revolutions, the speed control value = (0.06 / 0.1) * 50 = 30 revolutions.

[0166] S323, determining whether the value reflected by the thickness information is smaller than the minimum value within the value interval reflected by the preset thickness range.

[0167] It can be understood that judging whether the value reflected by the thickness information is less than the minimum value in the value interval reflected by the preset thickness range is to judge whether the current extrusion speed is too fast or too slow. Usually, when the extrusion speed is too fast, the wall thickness of the pipe may have a negative error, that is, the actual wall thickness is less than the designed wall thickness. This is because the excessively fast extrusion speed causes the material to stay in the mold for insufficient time, and it fails to fully plasticize and cool, resulting in a thin wall thickness of the pipe. When the extrusion speed is too slow, the wall thickness of the pipe may have a positive error, that is, the actual wall thickness is greater than the designed wall thickness. This is because the excessively slow extrusion speed causes the material to stay in the mold for too long, causing the pipe to shrink excessively during the cooling and shaping process, resulting in an increase in wall thickness.

[0168] S324, if the value reflected by the thickness information is smaller than the minimum value in the value interval reflected by the preset thickness range, first control information is obtained to instruct the extrusion device to subtract the speed control value from the current extrusion speed.

[0169] It can be understood that if the value reflected by the thickness information is smaller than the minimum value in the value interval reflected by the preset thickness range, it means that the current extrusion speed is too fast and needs to be reduced.

[0170] S325, if the value reflected by the thickness information is greater than the maximum value in the value interval reflected by the preset thickness range, first control information is obtained to instruct the extrusion device to add the speed control value to the current extrusion speed.

[0171] It can be understood that if the value reflected by the thickness information is greater than the maximum value in the value interval reflected by the preset thickness range, it means that the current extrusion speed is too slow and the extrusion speed needs to be increased.

[0172] S326, determining whether the surface defect type includes scorch marks.

[0173] It can be understood that judging whether the surface defect type includes scorch marks is to judge whether the extrusion temperature of the current extrusion equipment is too high. Generally, PVC-UH (polyvinyl chloride) is a heat-sensitive plastic with relatively poor light stability and thermal stability. At high temperatures, PVC-UH is prone to thermal degradation, resulting in molecular chain breakage and the production of small molecular compounds, which may form yellow or black scorch marks after further oxidation or reaction.

[0174] S327: If the surface defect type includes scorch marks, obtain second control information instructing the extrusion device to subtract the temperature control value from the current extrusion temperature.

[0175] It can be understood that if the surface defect type includes scorch marks, it means that the current extrusion temperature is too high and the extrusion temperature needs to be lowered.

[0176] S328: If the surface defect type does not include scorch marks and the surface defect type includes particles, obtain second control information instructing the extrusion device to add the temperature control value to the current extrusion temperature.

[0177] It is understandable that when the temperature of the extruder is set too low, plastic raw materials such as PVC may not be fully plasticized. Plasticization is an important step in the plastic processing process. It makes the plastic raw materials become molten under the action of heating and shear force for subsequent molding. Too low temperature will cause incomplete melting of the plastic raw materials, resulting in granular marks during the extrusion process. If the surface defect type does not include scorch marks and the surface defect type includes particles, it means that the current extrusion temperature is too low and the extrusion temperature needs to be increased.

[0178] S329: Confirm the first control information and the second control information as debugging information.

[0179] It can be understood that confirming the first control information and the second control information as debugging information can ensure that changing the extrusion parameters of the extrusion equipment according to the debugging information can eliminate or reduce the defects of the produced PVC-UH drainage pipes, thereby ensuring the quality of the produced PVC-UH drainage pipes.

[0180] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0181] Corresponding to the PVC-UH drain pipe flat twin-screw extrusion method described in the above embodiment, the embodiment of the present application also provides a PVC-UH drain pipe flat twin-screw extrusion system, and each unit of the system can implement each step of the PVC-UH drain pipe flat twin-screw extrusion method. Fig.10 A structural block diagram of a PVC-UH drainage pipe parallel twin-screw extrusion system provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0182] Reference Fig.10 The system comprises:

[0183] The acquisition unit is used to acquire drainage pipe information; wherein the drainage pipe information includes information reflecting the physical state of the PVC-UH drainage pipe.

[0184] The analysis unit is used to obtain status information based on the drainage pipe information; wherein the status information includes information reflecting whether the quality of the PVC-UH drainage pipe is qualified.

[0185] The debugging unit is used to obtain and send debugging information based on the status information; wherein the debugging information is used to instruct the extrusion equipment to produce the PVC-UH drainage pipe, and the extrusion equipment is a device that can produce the PVC-UH drainage pipe by extrusion.

[0186] It should be noted that the information interaction, execution process and other contents between the above-mentioned units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0187] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the system can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0188] The present application also provides a PVC-UH drainage pipe parallel twin-screw extruder, Fig.11This is a schematic diagram of the structure of a PVC-UH drainage pipe parallel twin-screw extruder provided in one embodiment of the present application. Fig.11 As shown, the PVC-UH drainage pipe flat twin-screw extruder of this embodiment includes a control device 6. The control device 6 includes: at least one processor 60 ( Fig.11 Only one is shown), at least one memory 61 ( Fig.11 Only one is shown in the figure) and a computer program 62 stored in the at least one memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, the PVC-UH drain pipe flat twin-screw extruder implements the steps in any of the above-mentioned PVC-UH drain pipe flat twin-screw extruder method embodiments, or the PVC-UH drain pipe flat twin-screw extruder implements the functions of each unit in the above-mentioned system embodiments.

[0189] Exemplarily, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 62 in the control device 6.

[0190] The control device 6 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The control device 6 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will appreciate that Fig.11 It is only an example of PVC-UH drain pipe flat twin-screw extrusion equipment and does not constitute a limitation of the PVC-UH drain pipe flat twin-screw extrusion equipment. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, for example, it may also include input and output devices, network access devices, buses, etc.

[0191] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0192] In some embodiments, the memory 61 may be an internal storage unit of the control device 6, such as a hard disk or memory of the control device 6. In other embodiments, the memory 61 may also be an external storage device of the control device 6, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the control device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the control device 6. The memory 61 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0193] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0194] An embodiment of the present application provides a computer program product. When the computer program product runs on a PVC-UH drainage pipe flat twin-screw extruder, the PVC-UH drainage pipe flat twin-screw extruder enables the PVC-UH drainage pipe flat twin-screw extruder to implement the steps in any of the above-mentioned method embodiments.

[0195] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the PVC-UH drainage pipe flat twin-screw extruder equipment, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0196] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0197] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0198] In the embodiments provided in the present application, it should be understood that the disclosed PVC-UH drain pipe flat twin-screw extrusion system, equipment and method can be implemented in other ways. For example, the PVC-UH drain pipe flat twin-screw extrusion system and equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0199] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0200] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A PVC-UH drainage pipe flat twin-screw extrusion method, characterized in that: include: Acquire drainage pipe information; wherein the drainage pipe information includes information reflecting the physical state of the PVC-UH drainage pipe; Obtaining status information based on the drainage pipe information; wherein the status information includes information reflecting whether the quality of the PVC-UH drainage pipe is qualified; Based on the status information, debugging information is obtained and sent; wherein the debugging information is used to instruct an extrusion device to produce the PVC-UH drainage pipe, and the extrusion device is a device capable of producing the PVC-UH drainage pipe by means of a parallel twin-screw extrusion; The obtaining of drainage pipe information includes: Obtain a monitoring time period; wherein the monitoring time period is a numerical value of a period of time; Acquiring surface information; wherein the surface information includes information reflecting the physical state of the outer wall surface of the PVC-UH drainage pipe produced during the monitoring time period; Acquiring internal information; wherein the internal information includes information reflecting the internal physical structure of the PVC-UH drainage pipe produced during the monitoring time period; confirming the surface information and the internal information as the drain pipe information; The obtaining of surface information comprises: Acquire a surface image; wherein the surface image is an image of the surface of the PVC-UH drain pipe transmitted by an image acquisition device, and the image acquisition device is a device of the extrusion equipment that can capture and transmit the image of the surface of the PVC-UH drain pipe; Input the surface image into an image recognition model to obtain a recognition image; wherein the image recognition model is a data model obtained through machine learning; the recognition image includes the surface image input into the image recognition model and surface defect information annotated on the surface image input into the image recognition model, the surface defect information includes at least one surface defect reflected on the surface of the PVC-UH drainage pipe that affects the service life of the PVC-UH drainage pipe and the corresponding surface defect type and area value, and the surface defect type includes particles, bubbles, scorch marks and depressions; A surface defect ratio obtained by adding the areas of the surface defects included in the surface defect information and dividing the sum by the total area of ​​the recognition image and the number of the surface defects included in the surface defect information are confirmed as the surface information; The obtaining of internal information includes: Sending an internal detection instruction; wherein the internal detection instruction is used to instruct an internal detection device to detect the internal structure of the PVC-UH drain pipe produced within the monitoring time period, and the internal detection device is a device of the extrusion equipment that can detect whether there are cavities inside the PVC-UH drain pipe and the thickness of the PVC-UH drain pipe; Acquire internal defect information; wherein the internal defect information includes information reflecting the number of cavities inside the PVC-UH drainage pipe and the volume of each of the cavities, which is transmitted after the internal detection device detects the internal structure of the PVC-UH drainage pipe produced within the monitoring time period; Acquire thickness information; wherein the thickness information includes information about the thickness of the pipe wall of the PVC-UH drainage pipe; The internal defect ratio obtained by adding the volumes of the internal voids in the internal defect information and dividing the sum by the total volume of the PVC-UH drainage pipe and the thickness information are confirmed as the internal information; The obtaining of status information based on the drainage pipe information includes: Based on the surface information, first state information is obtained; wherein the first state information includes information reflecting whether the surface quality of the PVC-UH drainage pipe is qualified; Based on the internal information, second status information is obtained; wherein the second status information includes information reflecting whether the internal structure of the PVC-UH drainage pipe is qualified; If the first state information reflects that the surface quality of the PVC-UH drain pipe is qualified and the second state information reflects that the internal structure of the PVC-UH drain pipe is qualified, the state information reflecting that the production parameters of the extrusion device do not need to be changed is obtained; If the first status information reflects that the surface quality of the PVC-UH drainage pipe is unqualified and / or the second status information reflects that the internal structure of the PVC-UH drainage pipe is unqualified, the status information reflecting that the production parameters need to be changed is obtained; The obtaining first state information based on the surface information includes: Determining whether the number of surface defects in the surface information is greater than or equal to a preset number of surface defects; If the number of the surface defects is greater than or equal to the preset number of surface defects, the first status information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained; If the number of the surface defects is less than the preset number of surface defects, determining whether the surface defect ratio is greater than or equal to the preset surface defect ratio; If the surface defect ratio is greater than or equal to a preset surface defect ratio, the first state information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained; If the surface defect ratio is less than a preset surface defect ratio, the first state information reflecting that the surface quality of the PVC-UH drainage pipe is qualified is obtained; The obtaining the second state information based on the internal information includes: Determining whether the value reflected by the thickness information in the internal information is within the value interval reflected by the preset thickness range; If the value reflected by the thickness information is not within the value interval reflected by the preset thickness range, the second state information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained; If the value reflected by the thickness information is within the value interval reflected by the preset thickness range, determining whether the internal defect ratio is greater than or equal to the preset internal defect ratio; If the internal defect ratio is greater than or equal to a preset internal defect ratio, the second state information reflecting that the quality of the PVC-UH drainage pipe is unqualified is obtained; If the internal defect ratio is less than the preset internal defect ratio, the second state information reflecting that the quality of the PVC-UH drainage pipe is qualified is obtained; The obtaining and sending debugging information based on the status information includes: If the state information reflects that the production parameters do not need to be changed, the debugging information indicating that no modification is made to the extrusion temperature and the extrusion speed is obtained; If the status information reflects that the production parameters need to be changed, the debugging information is obtained based on the maximum surface defect ratio and the maximum internal defect ratio; wherein the maximum surface defect ratio is the surface defect ratio of the PVC-UH drain pipe produced by the extrusion equipment at the maximum extrusion temperature and the maximum extrusion speed of the extrusion process, the maximum internal defect ratio is the internal defect ratio of the PVC-UH drain pipe produced by the extrusion equipment at the maximum extrusion temperature and the maximum extrusion speed, the maximum extrusion temperature is the maximum temperature that the extrusion equipment is allowed to reach when producing the PVC-UH drain pipe according to the extrusion process, and the maximum extrusion speed is the fastest speed that the extrusion equipment is allowed to reach when producing the PVC-UH drain pipe according to the extrusion process; The debugging information is obtained based on the maximum surface defect ratio and the maximum internal defect ratio, including: The surface defect ratio is divided by the maximum surface defect ratio and then multiplied by the temperature range value to obtain a temperature control value; wherein the temperature range value is a value obtained by subtracting the minimum extrusion temperature from the maximum extrusion temperature specified in the extrusion process; The speed control value is obtained by dividing the internal defect ratio by the maximum internal defect ratio and then multiplying the result by the speed range value; wherein the speed range value is the value obtained by subtracting the minimum extrusion speed from the maximum extrusion speed specified in the extrusion process; Determining whether the value reflected by the thickness information is less than the minimum value within the value interval reflected by the preset thickness range; If the value reflected by the thickness information is smaller than the minimum value in the value interval reflected by the preset thickness range, first control information is obtained to instruct the extrusion device to subtract the speed control value from the current extrusion speed; If the value reflected by the thickness information is greater than the maximum value in the value interval reflected by the preset thickness range, first control information is obtained to instruct the extrusion device to add the speed control value to the current extrusion speed; Determining whether the surface defect type includes the scorch mark; If the surface defect type includes the scorch mark, obtaining second control information instructing the extrusion device to subtract the temperature control value from the current extrusion temperature; If the surface defect type does not include the scorch mark and the surface defect type includes the particle, obtaining second control information instructing the extrusion device to add the temperature control value to the current extrusion temperature; The first regulation information and the second regulation information are confirmed as the debugging information.

2. The PVC-UH drainage pipe parallel twin-screw extrusion method according to claim 1, characterized in that: Before the drain pipe information is obtained, the extrusion equipment can work normally and the extrusion equipment can continuously and stably produce the PVC-UH drain pipe by means of flat twin-screw extrusion, and the produced PVC-UH drain pipe can pass through a cooling device and be normally transported by a traction device; wherein the cooling device is a device that can reduce the temperature of the PVC-UH drain pipe and assist the PVC-UH drain pipe in cooling and solidification, and the traction device is a device that can transport the PVC-UH drain pipe according to a preset route.

3. A PVC-UH drainage pipe parallel twin-screw extruder, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 2 is implemented.

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