HDPE pipe winding structural wall pipe winding molding equipment

Abstract

This invention relates to the field of spiral wound molding technology and discloses an HDPE pipe spiral wound structural wall pipe spiral wound molding equipment, including a base, a vertical plate mounted on the top of the base, a pulley on the top of the vertical plate, a mandrel splicing assembly on the top of the pulley, and a cooling and shaping assembly on the outer wall of the mandrel splicing assembly. By employing high-frequency mechanical vibration of piezoelectric ceramic water spray, and transmitting the vibration to the cooling water interface, the surface tension of water molecules is broken, allowing atmospheric pressure cooling water to be directly atomized into uniform micro-droplets without the need for a high-pressure pump. The atomized droplets can be aligned with the adsorption holes and directionally sprayed onto the pipe surface to achieve efficient heat exchange, reducing energy consumption and making the droplet distribution more uniform. Utilizing the existing shaped adsorption holes as the spray channel for subsequent atomization cooling, vacuum adsorption + water-cooled spraying is achieved, simplifying the structure while ensuring cooling uniformity and eliminating cooling dead zones caused by nozzle arrangement deviations in traditional spray devices.

Description

Technical Field

[0001] This invention relates to the field of winding molding technology, specifically to a winding molding equipment for HDPE pipe structural wall pipes. Background Technology

[0002] HDPE pipe spiral wound structural wall pipe spiral winding molding equipment is used for the hot spiral wound molding of HDPE (high density polyethylene) spiral wound structural wall pipe.

[0003] Existing HDPE pipe winding and structural wall pipe winding equipment has the following problems: The cooling sections are set up independently. During the winding process, three independent devices are required: a vacuum forming chamber, a spray cooling chamber, and an air cooling hood. These devices need to be arranged in series, resulting in a large overall footprint of the equipment. Furthermore, when multiple devices are connected, it is easy for the positioning reference to be inconsistent, and the coaxiality deviation between the mandrel and each cooling device is large, which in turn leads to problems such as uneven pipe wall thickness and excessive roundness error. Furthermore, the vacuum shaping and spray cooling adopt an independent channel design. The vacuum adsorption hole is only used for shaping, and additional spray nozzles and spray channels are required. This not only increases the structural complexity, but also easily creates cooling dead angles due to nozzle arrangement deviations, resulting in uneven cooling of the pipe and concentration of internal stress. Meanwhile, the positioning coordination between the core mold and the cooling device is poor. In the existing technology, the core mold and each cooling device are fixed on different frames without a unified reference surface, which makes it difficult to ensure the coaxiality of the two. The pipe is prone to eccentricity during the process of passing through, which further aggravates the defects in the forming quality. Existing core mold splicing structures are cumbersome, and most use segmented core molds connected by flange bolts. They lack electromagnetic splicing function, and require manual disassembly / installation of a large number of bolts when changing molds. This process is time-consuming, and uneven bolt preload can easily lead to core mold coaxiality deviation, making it unsuitable for small-batch, multi-specification production needs. Therefore, improvements are needed to address the aforementioned issues. Summary of the Invention

[0004] This invention provides an HDPE pipe winding structure wall pipe winding molding equipment, which solves the problems mentioned in the background art.

[0005] The present invention provides the following technical solution: an HDPE pipe winding structure wall pipe winding molding equipment, including a base, a vertical plate installed on the top of the base, a pulley provided on the top of the vertical plate, a core mold splicing assembly provided on the top of the pulley, and a cooling and shaping assembly provided on the outer wall of the core mold splicing assembly.

[0006] As a preferred technical solution of the present invention: the top of the base is provided with a pushing structure, the top of the base is fixedly equipped with a PLC controller, the top of the base is provided with a sliding groove, both ends of the core mold splicing assembly are equipped with fixing rods, the top of the fixing rods is equipped with an installation block, the inner wall of the installation block is provided with an electric telescopic cylinder, the telescopic end of the electric telescopic cylinder is rotatably connected to an arc plate, the outer wall of the arc plate is provided with a demolding layer, and the top of the fixing rod is provided with a connecting handle.

[0007] As a preferred technical solution of the present invention: the electric telescopic cylinder is electrically connected to the PLC controller, the top of the pulley contacts and abuts against the bottom of the core mold splicing assembly, and the outer wall of the core mold splicing assembly rotates relative to the outer wall of the pulley.

[0008] As a preferred technical solution of the present invention: the core mold splicing assembly includes a core mold one, a core mold two is snapped onto the outer wall of the core mold one, a boss is fixedly assembled at the end of the core mold one and the core mold two near the pushing structure, an electro-permanent magnet module is embedded in the inner cavity at both ends of the core mold one and the core mold two, and a groove is opened at the end of the core mold two away from the boss.

[0009] As a preferred technical solution of the present invention: the position of the boss corresponds to the position of the groove, and the boss and the groove are engaged; the electro-permanent magnet module is designed with a composite magnetic circuit of neodymium iron boron and soft magnetic alloy, and the Curie temperature of the electro-permanent magnet module is ≥350℃; both the first core mold and the second core mold have built-in constant temperature heating modules, and the constant temperature heating modules are electrically connected to the PLC controller; the electro-permanent magnet module is electrically connected to the PLC controller through a power supply.

[0010] As a preferred embodiment of the present invention: the cooling and shaping assembly includes an annular sleeve, the inner wall of which has an adsorption hole, a support ring installed at the end of the annular sleeve away from the PLC controller, a push plate mounted at the bottom of the support ring, a slider mounted at the bottom of the push plate, a water tank mounted on the outer wall of the push plate, a temperature sensor and a cooler respectively mounted on the inner wall of the water tank, a liquid supply pump mounted at the end of the water tank away from the push plate, an inlet pipe provided on the outer wall of the liquid supply pump, a fine filter installed at the bottom of the inlet pipe, and an annular cavity formed in the inner cavity of the annular sleeve.

[0011] As a preferred technical solution of the present invention: a servo motor is installed at one end of the annular cavity near the PLC controller, a lead screw body is fixedly mounted on the power output shaft of the servo motor, a lead screw moving block is threadedly connected to the outer wall of the lead screw body, mounting plates are installed at both ends of the servo motor, limit rods are installed on the outer wall of the mounting plates, an atomizing nozzle housing is embedded in the inner wall of the lead screw moving block, a water inlet tank is installed at the end of the lead screw moving block away from the atomizing nozzle housing, and a piezoelectric ceramic atomizing chip is provided on the outer wall of the atomizing nozzle housing.

[0012] As a preferred technical solution of the present invention: a photoelectric position sensor is installed on the inner wall of the end of the annular sleeve away from the liquid supply pump; a water collection tank is installed at the bottom of the inner wall of the annular sleeve; an inclined plate is fixedly installed at the bottom of the inner wall of the water collection tank; a return water pipe is installed at the bottom of the water collection tank; a pump body is installed at the end of the annular sleeve close to the PLC controller; an air pipe is installed at the output end of the slider; an electromagnetic reversing valve is provided on the outer wall of the air pipe; and a temperature sensor is installed on the inner wall of the side of the annular sleeve close to the pump body.

[0013] As a preferred technical solution of the present invention: a pressure sensor is embedded in the inner cavity of the annular sleeve, and the pressure sensor is electrically connected to the PLC controller; there are several adsorption holes, and the several adsorption holes are evenly distributed on the inner wall of the annular sleeve; there are two liquid supply pumps, two water inlet pipes, and two fine filters, and the two liquid supply pumps, two water inlet pipes, and two fine filters are symmetrically distributed at both ends of the annular sleeve; the end of the water inlet pipe away from the liquid supply pump is located on the inner wall of the annular cavity; the temperature sensor, the cooler, and the liquid supply pump are all electrically connected to the PLC controller; the slider is located on the inner wall of the slide groove, and the slider slides on the inner wall of the slide groove; the electromagnetic reversing valve is installed in the main air path between the vacuum interface and the pump body.

[0014] As a preferred technical solution of the present invention: the inclined plate is installed on the inner wall of the water collection tank at an inclination, one end of the return water pipe is snapped into the bottom of the annular sleeve, and the bottom of the return water pipe is located on the inner wall of the water storage tank, the servo motor and the piezoelectric ceramic atomizing chip are both electrically connected to the PLC controller, there are two limit rods, and the two limit rods are located on the inner wall of the lead screw moving block, the diameter of the atomizing nozzle housing is adapted to the diameter of the adsorption hole, and the water inlet tank is connected to the inner wall of the lead screw moving block.

[0015] The present invention has the following beneficial effects: 1. This HDPE pipe winding structure wall winding molding equipment utilizes high-frequency mechanical vibration of piezoelectric ceramic water spray. When the vibration is transmitted to the cooling water interface, it breaks through the surface tension of water molecules, allowing atmospheric pressure cooling water to be directly atomized into uniform micro-droplets without the need for a high-pressure pump. The atomized droplets can be aligned with the adsorption holes and directionally sprayed onto the pipe surface to achieve efficient heat exchange, reducing energy consumption and making the droplet distribution more uniform. The existing adsorption holes are used as the spray channel for subsequent atomization cooling, realizing vacuum adsorption + water-cooled spraying. This simplifies the structure while ensuring cooling uniformity and eliminating cooling dead zones caused by nozzle arrangement deviations in traditional spray devices. The integrated annular cavity structure of "shaping + atomizing spray" integrates the originally separate vacuum shaping cavity and spray cooling cavity into the same annular shell. The movable spray components are arranged through the interlayer space, eliminating the traditional independent spray device, reducing the equipment's footprint, and avoiding the pipe misalignment problem caused by connecting multiple devices.

[0016] 2. This HDPE pipe winding structure wall pipe winding forming equipment, through electromagnetic reversing valve and optimized air circuit design, realizes rapid switching between two modes: "vacuum shaping" and "air cooling". It replaces the traditional independent air cooling fan and fan shroud structure, further simplifying the equipment composition and reducing costs. Relying on the annular cavity and adsorption holes, it achieves uniform distribution of air cooling airflow and completes the entire cooling process of "vacuum adsorption - water cooling - air cooling". There is no need to add an extra air cooling channel, realizing full reuse of the core structure and improving reliability. At the same time, the vacuum adsorption holes are reused as spray channels to solve the defects of redundant structure and uneven cooling in the existing technology.

[0017] 3. This HDPE pipe winding structure wall pipe winding forming equipment adopts a "coaxial nesting + frame synchronous positioning" design for the core mold splicing component and the cooling and shaping component, ensuring small coaxiality deviation between the two and ensuring uniform stress throughout the pipe forming, shaping, and cooling process. This solves the problem of pipe wall thickness deviation caused by inconsistent positioning benchmarks of traditional multi-device systems. At the same time, the core mold adopts a segmented splicing structure of "electro-permanent magnet + boss and groove" to replace the traditional flange bolt connection, which allows for fast switching speed of magnetization or demagnetization, improves mold changing efficiency, and solves the problem of cumbersome disassembly and assembly of traditional core molds. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure on the other side of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the vertical plate structure of the present invention; Figure 5 This is a schematic diagram of the core mold splicing assembly structure of the present invention; Figure 6 This is a schematic diagram of the core mold structure of the present invention; Figure 7 This is a schematic diagram of the cooling and shaping component structure of the present invention; Figure 8 This is a schematic cross-sectional view of the cooling and shaping component of the present invention; Figure 9 This is a schematic diagram of the water inlet pipe structure of the present invention; Figure 10 This is a schematic diagram of the piezoelectric ceramic atomizing chip structure of the present invention; Figure 11 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Base; 2. Pushing structure; 3. PLC controller; 4. Slide groove; 5. Vertical plate; 6. Core mold splicing assembly; 7. Pulley; 8. Cooling and shaping assembly; 9. Fixing rod; 10. Mounting block; 11. Electric telescopic cylinder; 12. Arc plate; 13. Demolding layer; 14. Connecting handle; 601. Core mold one; 602. Core mold two; 603. Boss; 604. Electromagnetic module; 605. Groove; 801. Annular sleeve; 802. Adsorption hole; 803. Support ring; 804. Push plate; 805. Slider; 806. Water tank; 807. Temperature sensor one; 808. Cooler; 809. Liquid supply pump; 810. Water inlet pipe; 811. Fine filter; 812. Annular cavity; 813. Servo motor; 814. Lead screw body; 815. Lead screw moving block; 816. Mounting plate; 817. Limiting rod; 818. Atomizing nozzle housing; 819. Water inlet tank; 820. Piezoelectric ceramic atomizing chip; 821. Photoelectric position sensor; 822. Water collection tank; 823. Inclined plate; 824. Return water pipe; 825. Pump body; 826. Air pipe; 827. Electromagnetic reversing valve; 828. Temperature sensor two. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 - Figure 11A type of HDPE pipe winding structure wall pipe winding molding equipment includes a base 1, a vertical plate 5 installed on the top of the base 1, a pulley 7 on the top of the vertical plate 5, a core mold splicing assembly 6 on the top of the pulley 7, and a cooling and shaping assembly 8 on the outer wall of the core mold splicing assembly 6.

[0022] In a preferred embodiment: the top of the base 1 is provided with a pushing structure 2, the top of the base 1 is fixedly equipped with a PLC controller 3, the top of the base 1 is provided with a sliding groove 4, both ends of the core mold splicing assembly 6 are equipped with fixing rods 9, the top of the fixing rods 9 is equipped with an installation block 10, the inner wall of the installation block 10 is provided with an electric telescopic cylinder 11, the telescopic end of the electric telescopic cylinder 11 is rotatably connected to an arc plate 12, the outer wall of the arc plate 12 is provided with a demolding layer 13, and the top of the fixing rods 9 is provided with a connecting handle 14.

[0023] In a preferred embodiment: the electric telescopic cylinder 11 is electrically connected to the PLC controller 3, the top of the pulley 7 contacts and abuts against the bottom of the core mold splicing assembly 6, and the outer wall of the core mold splicing assembly 6 and the outer wall of the pulley 7 rotate relative to each other.

[0024] In the above structure, the electric telescopic cylinder 11 can be started by sending a signal through the PLC controller 3. The telescopic end of the electric telescopic cylinder 11 drives the arc plate 12 to rotate, so that gaps will appear between the demolding layers 13. This allows the core mold splicing assembly 6 to change its diameter, thereby effectively improving the demolding efficiency. Furthermore, the pushing structure 2 can be replaced with a different structure with the same function in actual use.

[0025] In a preferred embodiment: the core mold splicing assembly 6 includes a first core mold 601, a second core mold 602 is snapped onto the outer wall of the first core mold 601, a boss 603 is fixedly assembled at the end of the first core mold 601 and the second core mold 602 near the pushing structure 2, an electro-permanent magnet module 604 is embedded in the inner cavity at both ends of the first core mold 601 and the second core mold 602, and a groove 605 is opened at the end of the second core mold 602 away from the boss 603.

[0026] In the above structure, the mechanical positioning structure through the engagement of the boss 603 and the groove 605, and the uniform magnetic field generated after the electro-permanent magnet module 604 is energized and magnetized, allow the adjacent core mold 1 601 and core mold 2 602 to fit tightly together under the action of magnetic force after splicing, achieving alignment and ensuring that the overall coaxiality deviation of the core mold splicing assembly 6 is small after splicing. At the same time, the magnetic bonding can eliminate the gap of the mechanical connection, improve the rotational stability, and since the core mold splicing assembly 6 is a rotating part, the magnetic flux sensor and the current saturation sensor can be integrated to monitor the magnetic field strength and the magnetizing current in real time during use. The core mold splicing assembly 6 is allowed to start rotating only after the magnetic force is verified to meet the standard, eliminating the problem of splicing looseness caused by insufficient magnetic force. At the same time, the ease of disassembly and assembly is improved. The core mold 1 601 and core mold 2 602 can be quickly separated without removing the bolts. Compared with the traditional flange bolt connection, the mold changing efficiency is improved.

[0027] In a preferred embodiment: the position of the boss 603 corresponds to the position of the groove 605, and the boss 603 and the groove 605 are engaged. The electro-permanent magnet module 604 is made of neodymium iron boron and soft magnetic alloy composite magnetic circuit design, and the Curie temperature of the electro-permanent magnet module 604 is ≥350℃. Both the first core mold 601 and the second core mold 602 have built-in constant temperature heating modules, and the constant temperature heating modules are electrically connected to the PLC controller 3. The electro-permanent magnet module 604 is electrically connected to the PLC controller 3 through a power supply.

[0028] In the above structure, the electro-permanent magnet module 604 is designed with a composite magnetic circuit of neodymium iron boron and soft magnetic alloy. The characteristic of the electro-permanent magnet module 604 with a Curie temperature ≥350℃ can ensure the working temperature of the constant temperature heating module inside the adapter and enable it to stably withstand the centrifugal force and radial pressure of winding when the core mold splicing assembly 6 rotates, so that there is no energy consumption in the adsorption state. At the same time, because the corresponding positions of the splicing of the adjacent core mold 1 601 and core mold 2 602 are processed with magnetic steel plates through the engagement of the boss 603 and the groove 605, and the magnetic steel plates are made of soft magnetic steel, the magnetic force can be effectively transmitted. When the extruder melt temperature fluctuation is detected to be too high, the constant temperature of the core mold splicing assembly 6 can be automatically adjusted by the PLC controller 3, which can effectively avoid the difference in the softening degree of the tube blank caused by temperature changes; ensure the stability of the tube blank overlap rate, and solve the problem of "incomplete welding and tube deformation caused by temperature fluctuation" in traditional independent control.

[0029] In a preferred embodiment: the cooling and shaping assembly 8 includes an annular sleeve 801, the inner wall of the annular sleeve 801 is provided with an adsorption hole 802, a support ring 803 is installed at the end of the annular sleeve 801 away from the PLC controller 3, a push plate 804 is assembled at the bottom of the support ring 803, a slider 805 is installed at the bottom of the push plate 804, a water storage tank 806 is installed on the outer wall of the push plate 804, a temperature sensor 807 and a cooler 808 are respectively installed on the inner wall of the water storage tank 806, a liquid supply pump 809 is assembled at the end of the water storage tank 806 away from the push plate 804, a water inlet pipe 810 is provided on the outer wall of the liquid supply pump 809, a fine filter 811 is installed at the bottom of the water inlet pipe 810, and an annular cavity 812 is opened in the inner cavity of the annular sleeve 801.

[0030] In the above structure, when the pushing structure 2 drives the cooling and shaping component 8 to move towards the core mold assembly component 6, the push plate 804 can drive the slider 805 to slide on the inner wall of the groove 4, allowing the support ring 803 to be sleeved on the outer wall of the core mold assembly component 6 and pushed against it. This facilitates the cooling and shaping component 8 in the molding and cooling process of the core mold assembly component 6. After cooling is completed, the pushing structure 2 can drive the cooling and shaping component 8 to move in the opposite direction, and the slider 805 can drive the support ring 803 to move in the opposite direction via the push plate 804, allowing the support ring 803 to be able to support the core mold assembly component. Component 6 serves as a support and fixation element. The radial clearance of the cooling and shaping component 8 ensures that the tube can be smoothly fitted onto the outer wall of the core mold splicing component 6, while also reserving necessary space for adsorption shaping and atomization cooling. At the same time, the axial length of the core mold splicing component 6 runs through the entire molding and cooling process. The annular cavity 812 axially covers the cooling working section of the core mold splicing component 6. That is, the axial range of the annular sleeve 801 falls within the effective support range of the core mold splicing component 6, ensuring that the tube is always supported by the core mold splicing component 6 during the shaping and cooling process, and preventing the tube from deforming due to loss of support.

[0031] In a preferred embodiment: a servo motor 813 is installed at one end of the annular cavity 812 near the PLC controller 3. A lead screw body 814 is fixedly mounted on the power output shaft of the servo motor 813. A lead screw moving block 815 is threadedly connected to the outer wall of the lead screw body 814. Mounting plates 816 are installed at both ends of the servo motor 813. Limiting rods 817 are installed on the outer wall of the mounting plates 816. An atomizing nozzle housing 818 is embedded in the inner wall of the lead screw moving block 815. A water inlet tank 819 is installed at the end of the lead screw moving block 815 away from the atomizing nozzle housing 818. A piezoelectric ceramic atomizing chip 820 is provided on the outer wall of the atomizing nozzle housing 818.

[0032] In the above structure, after the settling time reaches the set value, the PLC controller 3 can send a signal to shut off the pump body 825. Then, the negative pressure in the annular cavity 812 is slowly released through the electromagnetic pressure relief valve at the air pipe 826 interface. This effectively avoids excessive pressure release that could cause gap impact between the pipe surface and the inner wall of the annular sleeve 801, affecting the settling dimensions. After the pressure in the annular cavity 812 drops to normal pressure, the electromagnetic pressure relief valve closes. At this time, the PLC controller 3 can send a signal to start the servo motor 813 and rotate the lead screw body 814, causing multiple lead screw moving blocks 815 to move along the limit. After the outer wall of rod 817 moves back and forth to cover the adsorption holes 802 in different areas, the position of piezoelectric ceramic atomizing chip 820 and adsorption hole 802 can be aligned after the movement. When the lead screw moving block 815 has finished moving, the outer wall of the lead screw moving block 815 at the end will contact the outer wall of photoelectric position sensor 821, so that it can emit a signal and feed it back to PLC controller 3, so that the servo motor 813 stops working. At this time, the outlet end of atomizing nozzle housing 818 and adsorption hole 802 are coaxial, ensuring that the atomized cooling water can contact the pipe through adsorption hole 802. After alignment, the PLC controller 3 sends a signal to start the liquid supply pump 809, and the cooler 808 cools the water source on the inner wall of the water storage tank 806. This causes the cooling water to be drawn into the inner wall of the inlet pipe 810 by the liquid supply pump 809 and then transported to the inner wall of the inlet tank 819. The cooling water then enters the inner wall of the lead screw moving block 815, and the atomized droplets are sprayed directly onto the pipe surface through the adsorption hole 802, achieving "point-to-point" water cooling. This results in uniform cooling of the entire pipe surface, and the cooling water absorbs heat from the pipe, causing its temperature to rise and partially forming water. Steam flows down the surface of the pipe and is collected in the water collection tank 822 at the bottom of the annular cavity 812. It then flows back to the inner wall of the water storage tank 806 through the return water pipe 824. After being cooled by the cooler 808, it is recycled and reused, improving the water resource utilization rate. The return water pipe 824 can also discharge the residual condensate mist on the inner wall of the annular cavity 812 in a timely manner, avoiding water mist affecting the air cooling effect or backflow into the pump body 825 during the subsequent air supply stage. After the water cooling is completed, the PLC controller 3 sends a signal to shut down the pump body 825, completing the closed loop of the water cooling stage and preparing to enter the air cooling switching process.

[0033] In a preferred embodiment: a photoelectric position sensor 821 is mounted on the inner wall of the end of the annular sleeve 801 away from the liquid supply pump 809; a water collection tank 822 is installed at the bottom of the inner wall of the annular sleeve 801; an inclined plate 823 is fixedly installed at the bottom of the inner wall of the water collection tank 822; a return water pipe 824 is installed at the bottom of the water collection tank 822; a pump body 825 is installed at the end of the annular sleeve 801 near the PLC controller 3; an air pipe 826 is installed at the output end of the slider 805; an electromagnetic reversing valve 827 is provided on the outer wall of the air pipe 826; and a temperature sensor 828 is installed on the inner wall of the side of the annular sleeve 801 near the pump body 825.

[0034] In the above structure, the pump body 825 is started after the PLC controller 3 sends a signal. Negative pressure is introduced into the inner wall of the annular cavity 812 through the air pipe 826, so that a stable negative pressure field is formed inside the annular cavity 812. Since the annular cavity 812 is connected to the inner wall of all the adsorption holes 802, the negative pressure acts on the surface of the hot HDPE pipe that has just been wound through the adsorption holes 802. Under the action of negative pressure adsorption force, the pipe can be tightly attached to the inner wall contour of the annular sleeve 801, and the outer diameter size can be quickly fixed. At the same time, the heat on the surface of the pipe is conducted to the sleeve wall of the annular cavity 812 through the adsorption holes 802, realizing initial heat dissipation, so that the surface temperature of the pipe drops initially, and can lay the temperature foundation for subsequent water cooling. Meanwhile, during this stage, a pressure sensor embedded in the inner cavity of the annular sleeve 801 monitors the negative pressure value of the inner wall of the annular cavity 812 in real time. When the negative pressure fluctuation is too large, the PLC controller 3 will send a signal to automatically adjust the pumping power of the pump body 825 to maintain the stability of the negative pressure. The shaping time is dynamically adjusted according to the pipe diameter and is achieved by matching the pipe traction speed with the axial length of the annular sleeve 801, so that: traction speed × shaping time = effective shaping length of the annular sleeve 801.

[0035] In a preferred embodiment: a pressure sensor is embedded in the inner cavity of the annular sleeve 801, and the pressure sensor is electrically connected to the PLC controller 3. There are several adsorption holes 802, which are evenly distributed on the inner wall of the annular sleeve 801. There are two liquid supply pumps 809, two water inlet pipes 810, and two fine filters 811, which are symmetrically distributed at both ends of the annular sleeve 801. The end of the water inlet pipe 810 away from the liquid supply pump 809 is located on the inner wall of the annular cavity 812. The temperature sensor 807, the cooler 808, and the liquid supply pump 809 are all electrically connected to the PLC controller 3. The slider 805 is located on the inner wall of the slide groove 4 and slides on the inner wall of the slide groove 4. The electromagnetic reversing valve 827 is installed in the main air passage between the vacuum interface and the pump body 825.

[0036] In the above structure, after the PLC controller 3 sends a signal, the servo motor 813 drives the lead screw body 814 to rotate in the opposite direction, which causes the lead screw moving block 815 to move in the opposite direction along the outer wall of the limit rod 817 and then reset. At this time, the cooling water source on the inner wall of the annular sleeve 801 will fall into the inner wall of the water collection tank 822 through the adsorption hole 802. Because the inclined plate 823 is inclined, the condensate inside the water collection tank 822 is discharged to the inner wall of the water storage tank 806 through the return water pipe 824, which can drain the residual condensate in the cavity. Then, the valve group on the outer wall of the return water pipe 824... The device closes its passage and activates the fine filter 811 to effectively prevent dust and impurities in the air from entering the cavity and contaminating the pipes or wearing out the liquid supply pump 809. The PLC controller 3 controls the solenoid reversing valve 827 to switch the airflow path, closing the original air extraction path between the pump body 825 and the annular cavity 812, and opening the air supply path between the atmosphere, pump body 825, and annular cavity 812. This switches the pump body 825 from "air extraction negative pressure mode" to "air supply positive pressure mode." After the airflow path switching is completed, the PLC controller 3 controls the adjustment... The pump body 825 controls the airflow at a frequency, ensuring that ambient temperature air is purified by an air filter installed on the outer wall of the pump body 825 before being pressurized and sent into the inner wall of the annular cavity 812. The air is then blown onto the pipe surface through evenly distributed adsorption holes 802, forming a uniform annular airflow. Simultaneously, because the adsorption holes 802 are matrix-distributed along the circumference and axial direction of the pipe, the airflow can fully cover the pipe surface, creating a continuous air-cooling channel along the pipe's axial direction. This rapidly removes residual heat from the pipe, eliminating internal stress. The air-cooling duration dynamically adjusts according to the pipe diameter and wall thickness. The temperature is adjusted and monitored in real time by temperature sensor 828. When the temperature drops to the standard, the PLC controller 3 sends a signal to first reduce the frequency of pump 825 to standby mode, and then shut down pump 825. Subsequently, the electromagnetic reversing valve 827 is controlled to switch back to the "air extraction passage" to complete the closed loop of the air cooling stage. Because the outlet end of the piezoelectric ceramic atomizing chip 820 and the adsorption hole 802 are staggered, the adsorption hole 802 is ensured to be unobstructed under negative pressure, which does not affect the formation of the negative pressure field. At the same time, there is no water pressure in the water inlet pipe 810.

[0037] In a preferred embodiment: the inclined plate 823 is installed at an angle on the inner wall of the water collection tank 822, one end of the return water pipe 824 is snapped into the bottom of the annular sleeve 801, and the bottom of the return water pipe 824 is located on the inner wall of the water storage tank 806. The servo motor 813 and the piezoelectric ceramic atomizing chip 820 are both electrically connected to the PLC controller 3. There are two limit rods 817, and the two limit rods 817 are located on the inner wall of the lead screw moving block 815. The diameter of the atomizing nozzle housing 818 is adapted to the diameter of the adsorption hole 802. The water inlet tank 819 is in communication with the inner wall of the lead screw moving block 815.

[0038] In the above structure, after the piezoelectric ceramic atomizing chip 820 is aligned with the adsorption hole 802, the PLC controller 3 can send a signal to activate the piezoelectric ceramic atomizing chip 820. This allows cooling water, after being filtered by the fine filter 811, to be delivered to each piezoelectric ceramic atomizing chip 820 at atmospheric pressure through the water inlet pipe 810. Under the power of the driving voltage, the chips 820 generate high-frequency vibrations, atomizing the cooling water into uniform, tiny droplets. These atomized droplets are then directly sprayed onto the pipe surface through the adsorption hole 802. Compared to traditional high-pressure atomization, this reduces energy consumption... The temperature is reduced and the droplet distribution is more uniform, so that the atomized droplets sprayed from all the adsorption holes 802 form a continuous annular water-cooled surface on the pipe surface. At the same time, the water-cooled surface gradually covers the pipe along the pipe axis, so as to achieve uniform cooling of the entire pipe surface. The cooling time of the water-cooling stage is dynamically adjusted according to the pipe wall thickness. When the pipe surface temperature drops to the standard value after water cooling and meets the temperature requirements for stress elimination in the subsequent air cooling stage, the liquid supply pump 809 can be shut down by sending a signal through the PLC controller 3, thus completing the closed loop of the water cooling stage and preparing to enter the air cooling switching process.

[0039] Working principle: When using this device, multiple core molds 601 and 602 are spliced ​​together by winding. The mechanical positioning structure of the boss 603 and the groove 605 is used, and a uniform magnetic field is generated after the electro-permanent magnet module 604 is energized and magnetized. This makes the adjacent core molds 601 and 602 fit tightly together under the action of magnetic force after splicing, achieving alignment and ensuring that the overall coaxiality deviation of the core mold splicing assembly 6 is small after splicing. At the same time, the magnetic bonding can eliminate the gap of the mechanical connection and make the HDPE pipe wrapped around the outer wall of the core mold splicing assembly 6 after extrusion. At this time, when the cooling and shaping component 8 is moved towards the core mold splicing component 6 by pushing the structure 2, the push plate 804 can drive the slider 805 to slide on the inner wall of the groove 4, so that the support ring 803 can be sleeved on the outer wall of the core mold splicing component 6 and pushed, so that the cooling and shaping component 8 can be sleeved on the outer wall of the core mold splicing component 6, and the axial length of the core mold splicing component 6 runs through the entire molding and cooling process. The annular cavity 812 axially covers the cooling working section of the core mold splicing component 6, that is, the axial range of the annular sleeve 801 falls within the effective support range of the core mold splicing component 6, ensuring that the pipe is always in the support state of the core mold splicing component 6 during the shaping and cooling process; Now, the shaping and cooling process can be carried out. After the PLC controller 3 sends a signal, the pump 825 is started. Negative pressure is introduced into the inner wall of the annular cavity 812 through the air pipe 826, so that a stable negative pressure field is formed inside the annular cavity 812. Since the annular cavity 812 is connected to the inner wall of all the adsorption holes 802, the negative pressure acts on the surface of the hot HDPE pipe that has just been wound through the adsorption holes 802. Under the action of negative pressure adsorption force, the pipe can be tightly attached to the inner wall contour of the annular sleeve 801, and the outer diameter size can be quickly fixed. At the same time, the heat on the surface of the pipe is conducted to the sleeve wall of the annular cavity 812 through the adsorption holes 802, realizing initial heat dissipation, so that the surface temperature of the pipe drops initially, and can lay the temperature foundation for subsequent water cooling. Simultaneously, during this stage, a pressure sensor embedded in the inner cavity of the annular sleeve 801 monitors the negative pressure value of the inner wall of the annular cavity 812 in real time. When the negative pressure fluctuation is too large, the PLC controller 3 will send a signal to automatically adjust the pumping power of the pump body 825 to maintain a stable negative pressure. Furthermore, when the setting time reaches the set value, the PLC controller 3 can send a signal to shut off the pump body 825. Then, the negative pressure in the annular cavity 812 is slowly released through the electromagnetic pressure relief valve at the air pipe 826 interface. This effectively avoids excessively rapid pressure release that could cause gap impact between the pipe surface and the inner wall of the annular sleeve 801, affecting the set dimensions. After the pressure in the annular cavity 812 drops to normal pressure, the electromagnetic pressure relief valve closes. At this point, the PLC controller 3 can send a signal... The servo motor 813 is started, and the lead screw body 814 rotates, causing multiple lead screw moving blocks 815 to reciprocate along the outer wall of the limiting rod 817 to cover the adsorption holes 802 in different areas. After the movement, the piezoelectric ceramic atomizing chip 820 is aligned with the position of the adsorption hole 802. When the lead screw moving block 815 has finished moving, the outer wall of the end of the lead screw moving block 815 will contact the outer wall of the photoelectric position sensor 821, so that it can emit a signal and feed it back to the PLC controller 3, causing the servo motor 813 to stop working. At this time, the outlet end of the atomizing nozzle housing 818 and the adsorption hole 802 are coaxial, ensuring that the atomized cooling water can contact the pipe through the adsorption hole 802. After alignment, the PLC controller 3 sends a signal to start the liquid supply pump 809, and the cooler 808 cools the water source on the inner wall of the water storage tank 806. This causes the cooling water to be drawn into the inner wall of the inlet pipe 810 by the liquid supply pump 809 and then transported to the inner wall of the inlet tank 819. The cooling water then enters the inner wall of the lead screw moving block 815, and the atomized droplets are sprayed directly onto the pipe surface through the adsorption hole 802, achieving "point-to-point" water cooling. This results in uniform cooling of the entire pipe surface, and the cooling water absorbs heat from the pipe, causing its temperature to rise and partially forming water. Steam flows down the surface of the pipe and is collected in the water collection tank 822 at the bottom of the annular cavity 812. It then flows back to the inner wall of the water storage tank 806 through the return water pipe 824. After being cooled by the cooler 808, it is recycled to improve the water resource utilization rate. The return water pipe 824 can also discharge the condensate water mist remaining on the inner wall of the annular cavity 812 in a timely manner, so as to avoid water mist affecting the air cooling effect or backflow into the pump body 825 during the subsequent air supply stage. After the water cooling is completed, the PLC controller 3 sends a signal to shut down the pump body 825, completing the closed loop of the water cooling stage and preparing to enter the air cooling switching process. After the PLC controller 3 sends a signal, the servo motor 813 drives the lead screw body 814 to rotate in the opposite direction. This causes the lead screw moving block 815 to move in the opposite direction along the outer wall of the limit rod 817 and then reset. At this time, the cooling water source inside the annular sleeve 801 will fall into the inner wall of the water collection tank 822 through the adsorption hole 802. Because the inclined plate 823 is tilted, the condensate inside the water collection tank 822 is discharged to the inner wall of the water storage tank 806 through the return water pipe 824, which can drain the residual condensate in the cavity. Then, the condensate flows through the outer wall of the return water pipe 824. The valve assembly closes its passage and activates the fine filter 811, effectively preventing dust and impurities in the air from entering the cavity and contaminating the pipes or wearing out the liquid supply pump 809. The PLC controller 3 controls the solenoid reversing valve 827 to switch the flow path, closing the original air extraction passage between the pump body 825 and the annular cavity 812, and opening the air supply passage between the atmosphere, pump body 825, and annular cavity 812. This switches the pump body 825 from "air extraction negative pressure mode" to "air supply positive pressure mode." After the air path switching is completed... The frequency of the pump body 825 is controlled by the PLC controller 3 to regulate the air supply volume. Normal temperature air is purified by an air filter installed on the outer wall of the pump body 825, then pressurized and sent into the inner wall of the annular cavity 812 by the pump body 825. The air is then blown onto the pipe surface through evenly distributed adsorption holes 802, forming a uniform annular airflow. Simultaneously, because the adsorption holes 802 are matrix-distributed along the circumference and axial direction of the pipe, the airflow can fully cover the pipe surface, creating a continuous air-cooling channel along the pipe's axial direction, quickly removing residual heat from the pipe. The internal stress is now eliminated, and the air cooling time is dynamically adjusted according to the pipe diameter and wall thickness. The surface temperature of the pipe is monitored in real time by temperature sensor 828. When the temperature drops to the standard, the PLC controller 3 sends a signal to first reduce the frequency of pump 825 to standby mode, and then shut down pump 825. Subsequently, the electromagnetic reversing valve 827 is controlled to switch back to the "air extraction passage", completing the closed loop of the air cooling stage. The cooled pipe is then pulled to the subsequent cutting station. The entire integrated cooling process: shaping - water cooling - air cooling is completed.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended technical solutions and their equivalents.

Claims

1. A device for winding and forming HDPE pipe structural wall pipes, comprising a base (1), characterized in that: The base (1) has a vertical plate (5) installed on its top. The vertical plate (5) has a pulley (7) on its top. The pulley (7) has a core mold splicing assembly (6) on its top. The core mold splicing assembly (6) has a cooling and shaping assembly (8) on its outer wall.

2. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 1, characterized in that: The base (1) has a push structure (2) on its top, a PLC controller (3) is fixedly mounted on the top of the base (1), a slide groove (4) is opened on the top of the base (1), a fixing rod (9) is installed at both ends of the core mold splicing assembly (6), an installation block (10) is installed on the top of the fixing rod (9), an electric telescopic cylinder (11) is provided on the inner wall of the installation block (10), an arc plate (12) is rotatably connected to the telescopic end of the electric telescopic cylinder (11), a demolding layer (13) is provided on the outer wall of the arc plate (12), and a connecting handle (14) is provided on the top of the fixing rod (9).

3. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 2, characterized in that: The electric telescopic cylinder (11) is electrically connected to the PLC controller (3). The top of the pulley (7) contacts and abuts against the bottom of the core mold splicing assembly (6). The outer wall of the core mold splicing assembly (6) rotates relative to the outer wall of the pulley (7).

4. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 1, characterized in that: The core mold splicing assembly (6) includes a core mold one (601), and a core mold two (602) is snapped onto the outer wall of the core mold one (601). Both the core mold one (601) and the core mold two (602) have a boss (603) fixedly mounted on one end near the pushing structure (2). Both ends of the core mold one (601) and the core mold two (602) have an electro-permanent magnet module (604) embedded in their inner cavities. The core mold two (602) has a groove (605) at one end away from the boss (603).

5. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 4, characterized in that: The position of the boss (603) corresponds to the position of the groove (605), and the boss (603) and the groove (605) are engaged. The electro-permanent magnet module (604) is designed with a composite magnetic circuit of neodymium iron boron and soft magnetic alloy, and the Curie temperature of the electro-permanent magnet module (604) is ≥350℃. Both the first core mold (601) and the second core mold (602) have built-in constant temperature heating modules, and the constant temperature heating modules are electrically connected to the PLC controller (3). The electro-permanent magnet module (604) is electrically connected to the PLC controller (3) through a power supply.

6. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 1, characterized in that: The cooling and shaping assembly (8) includes an annular sleeve (801), the inner wall of which is provided with an adsorption hole (802), a support ring (803) is installed at the end of the annular sleeve (801) away from the PLC controller (3), a push plate (804) is assembled at the bottom of the support ring (803), a slider (805) is installed at the bottom of the push plate (804), a water storage tank (806) is installed on the outer wall of the push plate (804), a temperature sensor (807) and a cooler (808) are respectively installed on the inner wall of the water storage tank (806), a liquid supply pump (809) is assembled at the end of the water storage tank (806) away from the push plate (804), an inlet pipe (810) is provided on the outer wall of the liquid supply pump (809), a fine filter (811) is installed at the bottom of the inlet pipe (810), and an annular cavity (812) is opened in the inner cavity of the annular sleeve (801).

7. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 6, characterized in that: A servo motor (813) is installed at one end of the annular cavity (812) near the PLC controller (3). A lead screw body (814) is fixedly mounted on the power output shaft of the servo motor (813). A lead screw moving block (815) is threadedly connected to the outer wall of the lead screw body (814). Mounting plates (816) are installed at both ends of the servo motor (813). A limit rod (817) is installed on the outer wall of the mounting plate (816). An atomizing nozzle housing (818) is embedded in the inner wall of the lead screw moving block (815). A water inlet tank (819) is installed at the end of the lead screw moving block (815) away from the atomizing nozzle housing (818). A piezoelectric ceramic atomizing chip (820) is provided on the outer wall of the atomizing nozzle housing (818).

8. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 7, characterized in that: A photoelectric position sensor (821) is installed on the inner wall of the end of the annular sleeve (801) away from the liquid supply pump (809). A water collection tank (822) is installed at the bottom of the inner wall of the annular sleeve (801). An inclined plate (823) is fixedly installed at the bottom of the inner wall of the water collection tank (822). A return water pipe (824) is installed at the bottom of the water collection tank (822). A pump body (825) is installed at the end of the annular sleeve (801) near the PLC controller (3). An air pipe (826) is installed at the output end of the slider (805). An electromagnetic reversing valve (827) is provided on the outer wall of the air pipe (826). A temperature sensor (828) is installed on the inner wall of the side of the annular sleeve (801) near the pump body (825).

9. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 8, characterized in that: The annular sleeve (801) has a pressure sensor embedded in its inner cavity, and the pressure sensor is electrically connected to the PLC controller (3). There are several adsorption holes (802), and the several adsorption holes (802) are evenly distributed on the inner wall of the annular sleeve (801). There are two liquid supply pumps (809), two water inlet pipes (810), and two fine filters (811), and the two liquid supply pumps (809), two water inlet pipes (810), and two fine filters (811) are symmetrically distributed on the annular sleeve (801). At both ends of the sleeve (801), the end of the water inlet pipe (810) away from the liquid supply pump (809) is located on the inner wall of the annular cavity (812). The temperature sensor (807), the cooler (808), and the liquid supply pump (809) are all electrically connected to the PLC controller (3). The slider (805) is located on the inner wall of the slide groove (4), and the slider (805) slides on the inner wall of the slide groove (4). The electromagnetic reversing valve (827) is installed in the main air passage between the vacuum interface and the pump body (825).

10. The HDPE pipe winding structural wall pipe winding forming equipment according to claim 9, characterized in that: The inclined plate (823) is installed at an angle on the inner wall of the water collection tank (822). One end of the return water pipe (824) is clamped to the bottom of the annular sleeve (801), and the bottom of the return water pipe (824) is located on the inner wall of the water storage tank (806). The servo motor (813) and the piezoelectric ceramic atomizing chip (820) are electrically connected to the PLC controller (3). There are two limit rods (817), and the two limit rods (817) are located on the inner wall of the lead screw moving block (815). The diameter of the atomizing nozzle housing (818) is adapted to the diameter of the adsorption hole (802). The water inlet tank (819) is connected to the inner wall of the lead screw moving block (815).

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