PVC pipe cooling and shaping machine and shaping method

Abstract

The present application relates to PVC pipe production technical field, disclose a kind of PVC pipe cooling setting machine and setting method.A kind of PVC pipe cooling setting machine, comprising: setting box, multiple setting mechanisms are equipped in the setting box;The setting mechanism includes: traction assembly, water cooling component and uniform adjustment component;The traction assembly is used to traction PVC pipe axial movement in the setting box;The water cooling component is used to provide water cooling environment for PVC pipe;The uniform adjustment component is used to adjust the movement state of the cooling work of water cooling component, and the uniform adjustment component is drivingly connected with the traction assembly.The present application is drivingly connected with the traction assembly by the setting of uniform adjustment component and traction assembly, as long as the feeding action of traction assembly control PVC pipe occurs, uniform adjustment component can adjust the movement of water cooling component, to ensure the flexibility of water cooling coverage, to achieve the effect of uniform cooling.

Description

Technical Field

[0001] This invention relates to the field of PVC pipe production technology, specifically to a PVC pipe cooling and shaping machine and shaping method. Background Technology

[0002] PVC is short for Polyvinyl chloride, a material whose main component is polyvinyl chloride, with other components added to enhance its heat resistance, toughness, and ductility. The outermost layer of this surface film is paint, the middle layer is mainly polyvinyl chloride, and the bottom layer is a backing adhesive. PVC pipes, on the other hand, are rigid polyvinyl chloride pipes, made by hot-pressing polyvinyl chloride resin with stabilizers, lubricants, and other additives. They were among the earliest plastic pipes developed and applied.

[0003] During the production of PVC pipes, the pipe body remains at a relatively high temperature after extrusion from the die. Due to its own structure and the expansion effect after extrusion, deformation will occur. Cooling and shaping measures are required to ensure the dimensional and shape accuracy and good surface quality of the pipe. The main cooling methods for PVC pipes include water immersion cooling and spray cooling. Water immersion cooling has a good effect, but because PVC pipes have poor low-temperature performance, they are prone to hardening and embrittlement, or cause pipe bending and radial cross-sectional deformation. Although spray cooling is a relatively gentle cooling method, it is difficult to ensure proper cooling even if the PVC pipe moves along the axis because the nozzle position is fixed. Summary of the Invention

[0004] The purpose of this invention is to provide a PVC pipe cooling and shaping machine and shaping method to solve the above-mentioned technical problems:

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A PVC pipe cooling and shaping machine, comprising:

[0007] A shaping box, wherein multiple shaping mechanisms are provided inside the shaping box;

[0008] The shaping mechanism includes: a traction component, a water-cooling component, and a uniform adjustment component; the traction component is used to traction the PVC pipe to move axially within the shaping box; the water-cooling component is used to provide a water-cooling environment for the PVC pipe; the uniform adjustment component is used to adjust the movement state of the water-cooling component during cooling operation, and the uniform adjustment component is connected to the traction component in a transmission connection.

[0009] The acquisition module is used to acquire the state parameters of the cooling water in a single water-cooling component;

[0010] An analysis and control component is used to analyze the cooling state parameters and adjust the shaping mechanism based on the analysis results.

[0011] As a further technical solution, the traction component includes:

[0012] A servo motor, which is fixedly mounted on the side wall of the shaping box;

[0013] Two traction rollers are symmetrically arranged on both sides of the PVC pipe. The curved sidewalls of the traction rollers are provided with arc-shaped grooves. The output end of the servo motor is connected to one of the traction rollers.

[0014] As a further technical solution, the water-cooling component includes:

[0015] A rotating support is fixedly installed inside the shaping box;

[0016] The cooling pipe is rotatably mounted on the rotating support. The inner wall of the cooling pipe is in contact with the inner wall of the PVC pipe. The side wall of the cooling pipe is evenly provided with several channel holes along the axial direction.

[0017] The water inlet pipe is provided with several of them for inputting cooling water. Each of the water inlet pipes is connected to one end of one of the channel holes. A solenoid valve is installed at the end of the water inlet pipe away from the channel hole. Multiple nozzles are evenly arranged on the water inlet pipe and the nozzles face the axis of the cooling pipe.

[0018] As a further technical solution, the water cooling assembly also includes a water outlet pipe, and several water outlet pipes are provided, with the other ends of the several water outlet pipes respectively connected to the other ends of the several channel holes.

[0019] The acquisition module includes a temperature sensor and a flow rate sensor installed on the water outlet pipe. The state parameters of the cooling water include the temperature and velocity values ​​of the water flow in the water outlet pipe.

[0020] As a further technical solution, the uniform adjustment component includes:

[0021] The first rotating shaft, two first rotating shafts are symmetrically arranged at both ends of the same traction roller, and both are connected to the traction roller for transmission. A drive pulley is installed on the first rotating shaft.

[0022] A bevel gear ring is fixedly sleeved on the side wall of the cooling pipe. Two toothed gears are symmetrically arranged on both sides of the bevel gear ring, and the two toothed gears intermittently mesh with the bevel gear ring in turn.

[0023] The second rotating shaft is connected to the two toothed gears respectively. A driven pulley is installed on the second rotating shaft, and the two driven pulleys are connected to the two driving pulleys respectively through belt drive.

[0024] A method for shaping PVC pipes using a cooling and shaping machine, the method comprising the following steps:

[0025] S1. Cooling water is introduced into several of the aforementioned water inlet pipes respectively;

[0026] S2. Collect water flow velocity data from several outlet pipes and perform flow velocity uniformity analysis on the water flow velocity data.

[0027] S3. Adjust the water flow velocity of each inlet pipe uniformly according to the results of the flow velocity uniformity analysis.

[0028] S4. Insert the PVC pipe to be cooled between the two traction rollers, while simultaneously driving the servo motor;

[0029] S5. Collect the water flow temperature in several water outlet pipes and perform data analysis on the water flow temperature.

[0030] S6. Based on the results of the data analysis, establish an adjustment strategy for the water-cooling component.

[0031] As a further technical solution, the process of analyzing the flow velocity uniformity of water flow velocity data includes:

[0032] Calculate and obtain the variance value of a set of water flow velocity data, wherein the set of water flow velocity data corresponds to the water flow velocity in each of the outlet pipes of a single water-cooling component;

[0033] The uniformity parameter is obtained by kneading the variance value, and the uniformity parameter is compared with the preset uniformity standard value. If the uniformity parameter is lower than the preset uniformity standard value, the water flow velocity in each of the water inlet pipes is adjusted uniformly by the solenoid valve.

[0034] As a further technical solution, the process of establishing the adjustment strategy for the water-cooling component includes:

[0035] The curve of water temperature change over time during a preset time period after the PVC pipe is fully inserted into the cooling pipe is collected.

[0036] The properties and parameters of the water flow temperature change curve over time are input into the trained calculation model to calculate and obtain the corresponding cooling evaluation value of the target water inlet pipe.

[0037] The water flow velocity in the inlet pipe corresponding to the horizontal position of the target inlet pipe in the next shaping mechanism is adjusted according to the cooling evaluation value of the cooling pipe.

[0038] The beneficial effects of this invention are:

[0039] (1) By setting up a transmission connection between the uniform adjustment component and the traction component, as long as the traction component controls the feeding action of the PVC pipe, the uniform adjustment component can adjust the movement of the water cooling component to ensure the flexibility of the water cooling coverage area, thereby achieving the effect of uniform cooling. In addition, by setting up the cooperation between the acquisition module and the analysis and control module, the cooling effect is specifically quantitatively analyzed, and the shaping mechanism is adjusted accordingly based on the analysis results, thus improving the accuracy of uniform cooling.

[0040] (2) In this invention, a servo motor drives a traction roller to control the feeding of the PVC pipe, while another traction roller plays the role of guiding and supporting. By setting the arc groove on the traction roller, the contact area between the roller surface and the PVC pipe can be increased. On the one hand, it is convenient to realize the traction process, and on the other hand, it effectively restricts the rotation of the PVC pipe relative to the axial direction, reducing the probability of twisting deformation.

[0041] (3) By rotating the cooling pipe, the present invention can simultaneously adjust the cooling coverage position of the two cooling methods mentioned above. Therefore, the above process achieves a uniform cooling effect. In addition, the flow rate of the cooling water input into the water inlet pipe can be indirectly adjusted by the opening of the battery valve. For the water inlet pipe with a fast cooling water flow rate, the corresponding nozzle and the local cooling effect of the cooling pipe are stronger. Based on this principle, the cooling effect of the local cooling surface corresponding to multiple water inlet pipes can be quantitatively adjusted.

[0042] (4) By adjusting the configuration of the components, the present invention can complete the traction action of the PVC pipe and the rotation adjustment of the cooling pipe under the drive of the same drive source. At the same time, it realizes the traction of the PVC pipe and the reciprocating adjustment of the position of the water cooling component, so as to indirectly achieve the purpose of uniform cooling of the PVC pipe. Attached Figure Description

[0043] The invention will now be further described with reference to the accompanying drawings.

[0044] Figure 1 This is a three-dimensional structural diagram of the PVC pipe cooling and shaping machine of the present invention after partial sectioning;

[0045] Figure 2 This is a schematic diagram of the shaping mechanism in this invention;

[0046] Figure 3 This is a top view of the shaping mechanism in this invention;

[0047] Figure 4 This is a cross-sectional view of the cooling pipe in this invention;

[0048] Figure 5 This is a flowchart of the shaping method of the PVC pipe cooling and shaping machine in this invention.

[0049] Figure descriptions: 1. Shaping box; 2. Shaping mechanism; 211. Servo motor; 212. Traction roller; 2121. Arc groove; 221. Cooling pipe; 222. Water inlet pipe; 223. Nozzle; 224. Water outlet pipe; 225. Rotating support; 231. Bevel gear ring; 232. Gear with missing teeth; 233. Second rotating shaft; 234. Driven pulley; 235. Drive pulley; 236. First rotating shaft; 2211. Channel hole. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] like Figure 1-2 As shown, a PVC pipe cooling and shaping machine includes:

[0052] A shaping box 1, wherein a plurality of shaping mechanisms 2 are provided inside the shaping box 1;

[0053] The shaping mechanism 2 includes: a traction component, a water-cooling component, and a uniform adjustment component; the traction component is used to traction the PVC pipe to move axially within the shaping box 1; the water-cooling component is used to provide a water-cooling environment for the PVC pipe; the uniform adjustment component is used to adjust the movement state of the water-cooling component during cooling operation, and the uniform adjustment component is connected to the traction component in a transmission connection.

[0054] The acquisition module is used to acquire the state parameters of the cooling water in a single water-cooling component;

[0055] An analysis and control component is used to analyze the cooling state parameters and adjust the shaping mechanism 2 based on the analysis results.

[0056] Through the above technical solution, this embodiment provides a PVC pipe cooling and shaping machine that can uniformly spray-cool PVC pipes, solving the problem that spray-cooling cannot guarantee the uniformity of circumferential cooling of PVC pipes. Specifically, through the transmission connection between the uniform adjustment component and the traction component, as long as the traction component controls the feeding action of the PVC pipe, the uniform adjustment component can adjust the movement of the water cooling component to ensure the flexibility of the water cooling coverage, thereby achieving a uniform cooling effect. In addition, through the cooperation of the acquisition module and the analysis and control module, the cooling effect is specifically quantitatively analyzed, and the shaping mechanism 2 is adjusted accordingly based on the analysis results, thus improving the accuracy of uniform cooling.

[0057] like Figure 2-3 As shown, the traction assembly includes:

[0058] Servo motor 211, the servo motor 211 is fixedly installed on the side wall of the shaping box 1;

[0059] Two traction rollers 212 are symmetrically arranged on both sides of the PVC pipe. The curved sidewall of the traction roller 212 is provided with an arc groove 2121. The output end of the servo motor 211 is connected to one of the traction rollers 212 for transmission.

[0060] Through the above technical solution, this embodiment provides a specific structure of the traction component. By driving the servo motor 211, one traction roller 212 is driven to control the feeding of the PVC pipe, while the other traction roller 212 plays a guiding and supporting role. The arc groove 2121 on the traction roller 212 can increase the contact area between the roller surface and the PVC pipe. On the one hand, it facilitates the traction process, and on the other hand, it effectively restricts the rotation of the PVC pipe relative to the axial direction, reducing the probability of twisting deformation.

[0061] like Figure 2-4 As shown, the water-cooling assembly includes:

[0062] Rotary support 225, which is fixedly installed inside the shaping box 1;

[0063] Cooling pipe 221 is rotatably mounted on the rotating support 225. The inner wall of the cooling pipe 221 is in contact with the inner wall of the PVC pipe. The side wall of the cooling pipe 221 is evenly provided with a plurality of channel holes 2211 along the axial direction.

[0064] A plurality of water inlet pipes 222 are provided for inputting cooling water. One end of each of the plurality of water inlet pipes 222 is respectively connected to one end of a plurality of channel holes 2211. A solenoid valve is installed at the end of each water inlet pipe 222 away from the channel holes 2211. A plurality of nozzles 223 are evenly arranged on the water inlet pipes 222, and the nozzles 223 are oriented toward the axis of the cooling pipe 221.

[0065] like Figure 2-4 As shown, the water cooling assembly also includes a water outlet pipe 224, and several water outlet pipes 224 are provided. The other ends of the several water outlet pipes 224 are respectively connected to the other ends of the several channel holes 2211.

[0066] The acquisition module includes a temperature sensor and a flow rate sensor installed on the water outlet pipe 224. Correspondingly, the state parameters of the cooling water include the temperature value and the velocity value of the water flow in the water outlet pipe 224.

[0067] Through the above technical solution, this embodiment provides a specific structure of the water-cooling component. Cooling water enters the channel hole 2211 of the cooling pipe 221 through the inlet pipe 222 and is discharged through the outlet pipe 224. The cooling process includes water spraying onto the PVC pipe by the nozzle 223 and heat conduction cooling through the contact between the inner wall of the cooling pipe 221 and the outer wall of the PVC pipe. By rotating the cooling pipe 221, the cooling coverage position of the two cooling methods can be adjusted simultaneously. Therefore, the combined process achieves a uniform cooling effect. In addition, the flow rate of the cooling water entering the inlet pipe 222 can be indirectly adjusted by the opening of the solenoid valve. For the inlet pipe 222 with a faster cooling water flow rate, the local cooling effect of the corresponding nozzle 223 and cooling pipe 221 is stronger. Based on this principle, the cooling effect of the local cooling surface corresponding to multiple inlet pipes 222 can be quantitatively adjusted.

[0068] The uniform adjustment component includes:

[0069] like Figure 2-3 As shown, the first rotating shaft 236, two first rotating shafts 236 are symmetrically arranged at both ends of the same traction roller 212, and both are connected to the traction roller 212 for transmission. A drive pulley 235 is installed on the first rotating shaft 236.

[0070] A bevel gear ring 231 is fixedly sleeved on the side wall of the cooling pipe 221. Two toothed gears 232 are symmetrically arranged on both sides of the bevel gear ring 231, and the two toothed gears 232 mesh with the bevel gear ring 231 in turn.

[0071] The second rotating shaft 233 is connected to the two toothed gears 232 respectively. The driven pulleys 234 are installed on the second rotating shafts 233 respectively. The two driven pulleys 234 are connected to the two driving pulleys 235 respectively through belt drive.

[0072] Through the above technical solution, this embodiment provides a specific structure for the adjustment component. The traction roller 212 drives the first rotating shaft 236 to rotate, and the drive pulley 235 installed on the first rotating shaft 236 drives the driven pulley 234 to rotate under the transmission of the belt, which in turn drives the second rotating shaft 233 to rotate. The toothed gear 232 rotates with the second rotating shaft 233. Since the two toothed gears 232 alternately mesh with the gear ring, the simultaneous rotation of the two toothed gears 232 can drive the cooling pipe 221 to rotate at a small deflection angle on the rotating support 225. Therefore, the nozzle 223 reciprocates along the circumference of the PVC pipe, which is conducive to achieving uniform cooling of the PVC pipe.

[0073] like Figure 5 As shown, a PVC pipe cooling and shaping machine has a shaping method, the method comprising the following steps:

[0074] S1. Cooling water is introduced into several of the water inlet pipes 222 respectively;

[0075] S2. Collect water flow velocity data from several outlet pipes 224 and perform flow velocity uniformity analysis on the water flow velocity data.

[0076] S3. Adjust the water flow velocity of each inlet pipe 222 uniformly according to the results of the flow velocity uniformity analysis.

[0077] S4. Insert the PVC pipe to be cooled between the two traction rollers 212, and simultaneously drive the servo motor 211;

[0078] S5. Collect the water flow temperature in several water outlet pipes 224 and perform data analysis on the water flow temperature.

[0079] S6. Based on the results of the data analysis, establish an adjustment strategy for the water-cooling component.

[0080] The process of analyzing the uniformity of flow velocity data includes:

[0081] Calculate and obtain the variance value of a set of water flow velocity data, wherein the set of water flow velocity data corresponds to the water flow velocity in each of the outlet pipes 224 of a single water cooling component;

[0082] The uniformity parameter is obtained by kneading the variance values, and then compared with a preset uniformity standard value. If the uniformity parameter is lower than the preset uniformity standard value, the water flow velocity in each of the inlet pipes 222 is adjusted uniformly using the solenoid valve. The above uniformity analysis process can be specifically represented by the following data analysis methods:

[0083]

[0084]

[0085]

[0086]

[0087] The uniformity parameter P can be obtained by combining the above formulas. unif ;

[0088] Where N is the number of water outlet pipes 224, V i(t) t1 represents the change in water flow velocity over time in the i-th outlet pipe 224; t1 and t2 are the left and right endpoints of the preset flow velocity study time period, respectively. δ is the variance; δ st The standard deviation is the preset variance; R stω1 and ω2 are preset standard values ​​for the range; c1 and c2 are adjustment coefficients, and c1 > 0 & c2 > 0; ω1 and ω2 are preset first weight coefficients and second weight coefficients, respectively.

[0089] The uniformity parameter P unif Compared with the preset uniform standard value P s Compare:

[0090] If P unif ≥P s If so, then uniform adjustment will not be performed;

[0091] If P unif <P s Then, the water flow velocity in each of the inlet pipes 222 is uniformly adjusted by the solenoid valve. The specific adjustment process is as follows: the water flow velocity in the corresponding outlet pipe 224 is controlled by adjusting the opening of the solenoid valve on the inlet pipe 222. After adjustment, the above judgment process is repeated until P. unif ≥P s The uniform adjustment is then completed. It should be noted that the i-th inlet pipe 222 and the i-th outlet pipe 224 are corresponding, that is, they are connected through the same channel hole 2211.

[0092] The process of establishing the adjustment strategy for the water-cooling component includes:

[0093] The water flow temperature curve is collected over a preset time period after the PVC pipe is fully inserted into the cooling pipe 221.

[0094] The cooling evaluation value of the target water inlet pipe 222 is calculated by inputting the property parameters of the water flow temperature change curve over time into the trained calculation model.

[0095] The water flow velocity in the inlet pipe 222, which corresponds horizontally to the position of the target inlet pipe 222, is adjusted according to the cooling evaluation value of the cooling pipe 221 in the next shaping mechanism 2. The above process can be quantified as follows:

[0096] Through formula Calculate and obtain the cooling evaluation value E of the i-th water inlet pipe 222 in the j-th shaping mechanism 2. cooling(ij) ;

[0097] Among them, t a t b The left and right endpoints of the pre-defined time period for the study; T ij (t) represents the curve of water temperature change over time in the i-th outlet pipe 224 of the j-th shaping mechanism 2, as measured by a temperature sensor; Δτ ij (t) is the standard temperature change curve, which can be obtained by fitting experimental data according to cooling requirements; γ is a preset coefficient, which can also be obtained by inverse calculation based on experimental data.

[0098] Cooling evaluation value E cooling(ij) With the preset threshold E θ Compare:

[0099] If |E cooling(ij) |≤E θ If the water flow velocity in the water inlet pipe 222, which is horizontally corresponding to the position of the target water inlet pipe 222 in the next shaping mechanism 2, is not adjusted;

[0100] If |E cooling(ij) |≤E θ Then, the water flow velocity in the water inlet pipe 222, which is horizontally corresponding to the position of the target water inlet pipe 222 in the next shaping mechanism 2, is adjusted, and the increase in water flow velocity from the original flow velocity is: X ij *E cooling(ij) , where X ij These are the adjustment parameters obtained based on experimental fitting.

[0101] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A PVC pipe cooling and shaping machine, characterized in that, include: A shaping box (1) is provided with multiple shaping mechanisms (2) inside the shaping box (1); The shaping mechanism (2) includes: a traction component, a water-cooling component, and a uniform adjustment component; the traction component is used to traction the PVC pipe to move axially within the shaping box (1); the water-cooling component is used to provide a water-cooling environment for the PVC pipe; the uniform adjustment component is used to adjust the movement state of the water-cooling component during cooling operation, and the uniform adjustment component is connected to the traction component in a transmission connection. The acquisition module is used to acquire the state parameters of the cooling water in a single water-cooling component; An analysis and control component is used to analyze the state parameters of the cooling water and adjust the shaping mechanism (2) according to the analysis results; The traction assembly includes: Servo motor (211), the servo motor (211) is fixedly installed on the side wall of the shaping box (1); Two traction rollers (212) are symmetrically arranged on both sides of the PVC pipe. The curved sidewall of the traction roller (212) is provided with an arc groove (2121). The output end of the servo motor (211) is connected to one of the traction rollers (212) for transmission. The water-cooling assembly includes: Rotary support (225), which is fixedly installed inside the shaping box (1); Cooling pipe (221), the cooling pipe (221) is rotatably mounted on the rotating support (225), the inner wall of the cooling pipe (221) is in contact with the inner wall of the PVC pipe, and the side wall of the cooling pipe (221) is evenly provided with a number of channel holes (2211) along the axial direction. A plurality of water inlet pipes (222) are provided for inputting cooling water. One end of each of the plurality of water inlet pipes (222) is respectively connected to one end of each of the plurality of channel holes (2211). A solenoid valve is installed at the end of each water inlet pipe (222) away from the channel hole (2211). A plurality of nozzles (223) are evenly arranged on the water inlet pipes (222), and the nozzles (223) face the axis of the cooling pipe (221). The water cooling assembly also includes a water outlet pipe (224), and several water outlet pipes (224) are provided, with the other ends of several water outlet pipes (224) respectively connected to several channel holes (2211); The acquisition module includes a temperature sensor and a flow rate sensor installed on the water outlet pipe (224), and the state parameters of the cooling water include the temperature value and velocity value of the water flow in the water outlet pipe (224).

2. The PVC pipe cooling and shaping machine according to claim 1, characterized in that, The uniform adjustment component includes: The first rotating shaft (236) has two first rotating shafts (236) symmetrically arranged at both ends of the same traction roller (212) and both are connected to the traction roller (212) for transmission. A drive pulley (235) is installed on the first rotating shaft (236). A bevel gear ring (231) is fixedly sleeved on the side wall of the cooling pipe (221). Two toothed gears (232) are symmetrically arranged on both sides of the bevel gear ring (231), and the two toothed gears (232) mesh with the bevel gear ring (231) intermittently in turn. The second rotating shaft (233) is connected to the two toothed gears (232) respectively. The driven pulleys (234) are installed on the second rotating shafts (233). The two driven pulleys (234) are connected to the two drive pulleys (235) respectively through belt drive.

3. A shaping method for a PVC pipe cooling and shaping machine as described in claim 2, characterized in that, The method includes the following steps: S1. Cooling water is introduced into several of the aforementioned water inlet pipes (222); S2. Collect the water flow velocity in several outlet pipes (224) and perform flow velocity uniformity analysis on the water flow velocity data; S3. Adjust the water flow velocity of each of the inlet pipes (222) uniformly according to the results of the flow velocity uniformity analysis. S4. Insert the PVC pipe to be cooled between the two traction rollers (212) while driving the servo motor (211). S5. Collect the water flow temperature in several outlet pipes (224) and perform data analysis on the water flow temperature; S6. Based on the results of the data analysis, establish an adjustment strategy for the water-cooling component; The uniformity parameter is obtained by kneading the variance values, and then compared with a preset uniformity standard value. If the uniformity parameter is lower than the preset uniformity standard value, the water flow velocity in each of the inlet pipes 222 is adjusted uniformly through the solenoid valve. The above uniformity analysis process can be specifically represented by the following data analysis methods: The uniformity parameter can be obtained by combining the above formulas. ; Where N represents the number of water outlet pipes 224. Let be the change in water flow velocity in the i-th outlet pipe 224 over time; and These represent the left and right endpoints of the preset flow velocity study time period; ; This represents the variance. The standard deviation is the preset value. This is the preset range standard value; , It is the adjustment coefficient, and & ; , These are the preset first weighting coefficient and second weighting coefficient, respectively; uniformity parameter Compared with the preset uniform standard value Compare: like If so, then uniform adjustment will not be performed; like The water flow velocity in each of the inlet pipes 222 is then uniformly adjusted via solenoid valves. Specifically, the adjustment process involves controlling the water flow velocity in the corresponding outlet pipe 224 by adjusting the opening of the solenoid valve on the inlet pipe 222. After adjustment, the above judgment process is repeated until... The uniform adjustment ends; it should be noted that the i-th inlet pipe 222 and the i-th outlet pipe 224 are corresponding, that is, they are connected through the same channel hole 2211.

4. The shaping method of a PVC pipe cooling and shaping machine according to claim 3, characterized in that, The process of analyzing the uniformity of flow velocity data includes: Calculate and obtain the variance value of a set of water flow velocity data, wherein the set of water flow velocity data corresponds to the water flow velocity in each of the outlet pipes (224) of a single water-cooling component; The uniformity parameter is obtained by kneading the variance value, and the uniformity parameter is compared with the preset uniformity standard value. If the uniformity parameter is lower than the preset uniformity standard value, the water flow velocity in each of the water inlet pipes (222) is adjusted uniformly by the solenoid valve.

5. The shaping method of a PVC pipe cooling and shaping machine according to claim 4, characterized in that, The process of establishing the adjustment strategy for the water-cooling component includes: The water flow temperature curve was collected over a preset time period after the PVC pipe was fully inserted into the cooling pipe (221). The cooling evaluation value of the target water inlet pipe (222) is calculated and obtained by inputting the property parameters of the water flow temperature change curve with time into the trained calculation model. The water flow velocity in the inlet pipe (222) of the next shaping mechanism (2) is adjusted according to the cooling evaluation value of the cooling pipe (221) and the horizontal position of the target inlet pipe (222).

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