Variable-diameter inspection well rotary winding forming self-adaptive adjustment method and device

Abstract

This invention provides an adaptive adjustment method and device for rotary winding molding of variable-diameter inspection wells, relating to the technical field of plastic winding inspection well production equipment. By setting up dual laser rangefinders for simultaneous comparative detection, the thickness of the plastic layer is measured. Simultaneously, comparison is performed within a central control device to ensure that the difference between the detected value and the preset value is within the error range (a, b). The extrusion rate or the rotation speed of the die is dynamically adjusted, effectively avoiding the problems of material stretching and thinning (or even breaking) in the large-diameter section and material bulging in the small-diameter section. This significantly improves the wall thickness uniformity of the variable-diameter inspection well, ensures the structural strength of the product, meets the standards for municipal engineering use, eliminates the need for manual intervention in adjusting the extrusion rate, achieves automated production, reduces labor costs, improves production continuity and efficiency, and solves the pain point of low product qualification rate in existing equipment.

Description

Technical Field

[0001] This invention relates to the field of plastic winding inspection well production equipment, and in particular to an adaptive adjustment method and device for rotary winding forming of variable diameter inspection wells. Background Technology

[0002] Plastic spiral wound manholes are widely used in municipal drainage and sewage projects due to their excellent corrosion resistance, ease of construction, and long service life. The main structure of these manholes typically employs a variable-diameter spiral winding process. This involves using an integrated rotary mold encompassing a large-diameter section, an intermediate transition cone section, and a small-diameter section. The extruded plastic spiral wound strip is wound layer by layer onto the outer wall of the mold through the rotation of the mold, thus forming a variable-diameter manhole body. Common manhole molds are typically integrated rotary molds with different specifications such as φ600mm, φ700mm, φ800mm, 1200mm, and φ1600mm for the large-diameter section, intermediate transition cone section, and small-diameter section.

[0003] Existing variable diameter manhole winding production equipment generally adopts a "constant extrusion rate" production process. The screw speed of the extruder is fixed, and the output amount per unit time remains constant. The winding operation is completed solely by the uniform rotation of the die.

[0004] Based on the actual operating parameters of the equipment, the die pitch is 25mm, the current die linear speed is 6000mm / min, the extrusion speed is 40.6rpm, and the carriage (die horizontal movement mechanism) speed is 68.2mm / min (i.e., the horizontal movement speed of the variable diameter die). During actual production, there are significant differences in the circumferential linear speed of different diameter sections when the die rotates. According to the linear speed calculation formula v=π×D×n (where v is the linear speed, D is the die diameter, and n is the die rotation speed), under the premise of a constant die rotation speed, the circumferential linear speed of the die surface is positively correlated with the die diameter. That is, the larger the die diameter, the higher its circumferential linear speed. The larger diameter section (e.g., φ1600mm) has a longer circumference and a faster linear speed during rotation and winding; the linear speed of the intermediate transition section gradually adjusts with the diameter change; the smaller diameter section (e.g., φ600mm) has a smaller circumference and a slower rotation and winding linear speed.

[0005] The aforementioned operating conditions and the constant extrusion rate create an irreconcilable contradiction, leading to the following serious quality problems:

[0006] 1. In the large-diameter section, the die diameter is larger and the circumferential velocity is faster. Due to the constant extrusion rate, the material distributed per unit length of the die surface is insufficient, resulting in the plastic winding tape being forcibly overstretched. This causes the pipe wall of the large-diameter section of the well body to become significantly thinner, the structural strength to decrease significantly, and in severe cases, even breakage, failing to meet construction standards.

[0007] 2. In the small-diameter section, the die diameter is smaller and the circumferential speed is slower. A constant extrusion rate leads to excessive material accumulation per unit area, resulting in problems such as tube wall bulging, wrinkles, and uneven wall thickness. This not only affects the product appearance but also wastes raw materials.

[0008] In summary, the existing technology lacks a real-time wall thickness feedback and extrusion volume compensation mechanism for variable diameter rotary dies, making it difficult to ensure the uniformity of wall thickness throughout the entire process of variable diameter inspection wells. This results in a low product qualification rate and severely restricts the improvement of production efficiency. Summary of the Invention

[0009] The purpose of this invention is to provide an adaptive adjustment method and apparatus for rotary winding forming of variable-diameter inspection wells, thereby solving the technical problem in the prior art that adaptive wall thickness compensation cannot be achieved. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0010] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an adaptive adjustment method for rotary winding forming of variable diameter inspection wells, including... S1. Before the production line starts, the equipment is initialized. The first and second laser rangefinders of the thickness measuring component simultaneously measure the distance to the surface of the mold with the same circumferential cross section and transmit the measurement signals to the central control device for comparison. If the value detected by the first laser rangefinder is not equal to the value detected by the second laser rangefinder, the position of the first or second laser rangefinder is adjusted until the values ​​detected by both are the same, thus completing the benchmark calibration. S2. Start the first and second drive devices to synchronously drive the heated mold to rotate at a uniform speed. The encoder detects the rotation speed of the first or second idler roller, transmits the speed value to the central control device, and converts the speed value into the linear velocity of the mold's circumference. At the same time, the first laser rangefinder detects the distance from the laser rangefinder to the mold surface and records it as L. 基准 The second laser rangefinder detects its distance to the outer surface of the plastic layer and records it as L. 测量 The first and second laser rangefinders transmit their detection values ​​to the central control device, which then calculates the plastic layer thickness D based on the detection values ​​using the formula D=L. 基准 -L 测量 ; S3. The central control device has a preset value for the thickness of the plastic layer, and the preset value has an error range (a, b); the central control device compares the calculated thickness D of the plastic layer with the preset value D1, and calculates the difference D. 差 D 差=D-D1, when D 差 When the value is less than a, the central control device controls the extruder to increase the extrusion rate or the die rotation speed to decrease, so that D 差 Adjust to within the error range (a, b); when D 差 When the value is greater than b, the central control device controls the extruder (4) to reduce the extrusion amount or increase the die speed, so that D 差 Adjust to within the error range (a, b); when D 差 When the extrusion rate is within the error range (a, b), the central control device controls the extrusion rate of the extruder (4) and the rotation speed of the die to remain constant. S4. Repeat steps S2-S3 to achieve real-time detection of pipe wall thickness and adaptive adjustment of extrusion amount until the entire variable diameter inspection well is wound and formed, ensuring uniform pipe wall thickness throughout the process.

[0011] Preferably, mold heating is set in S2. S2. Start the heating detection device. The heating device of the heating detection device heats the surface of the mold. The infrared temperature sensor of the heating detection device monitors the temperature of the mold surface in real time and transmits the temperature signal to the central control device. S22. The central control device is equipped with a preset temperature value. When the temperature of the mold surface detected by the infrared temperature sensor is higher than the preset temperature value, the central control device controls the extruder to start and the third drive device to operate, and begins the plastic winding operation. When the temperature of the mold surface detected by the infrared temperature sensor is lower than the preset temperature value, the extruder and the third drive device remain in the initial shutdown state, and the central control device controls the heating device to increase the heating temperature so that the mold surface temperature reaches the preset temperature value. This application also provides an adaptive extrusion control device for rotary winding forming of variable diameter inspection wells, using the method described in the claims, including a first guide rail, a third slider, a first support frame, a first support base, a second support base, a thickness measuring component, a central control device, a second support frame, an extruder, a first drive device, a second drive device, a third drive device, and a fourth drive device. The third guide rail is installed on the ground, the third slider is installed at the bottom of the first support frame, the third slider is slidably installed on the third guide rail, and the third driving device is installed on the ground to drive the first support frame to move along the length direction of the third guide rail. A set of first rollers is provided at one end of the first support frame. A first drive device is installed on the first support frame and drives the first rollers to rotate. A set of second support seats arranged laterally is slidably installed at the other end of the first support frame. A second roller is provided on the second support seat. A second drive device is installed on the second support seat and drives the second rollers to rotate. The first rollers and the second rollers jointly support the mold. An encoder is provided on the first roller or the second roller. The second support frame is disposed on one side of the first support frame, the extruder is movably mounted on the second support frame, and the fourth drive device drives the extruder to move closer to or away from the mold. The extruder is used to extrude plastic. The thickness measuring component is mounted on the second support frame and is used to monitor the thickness of the plastic layer formed by the plastic being wound around the mold in real time. The thickness measuring component includes a first laser rangefinder and a second laser rangefinder. The first laser rangefinder is equidistant from the surface of the mold and is located circumferentially on the same circumferential cross-section of the mold. The thickness of the plastic layer is D, where D=L. 基准 -L 测量 Where D is the actual thickness of the plastic layer, and L 基准 L represents the initial distance (reference value) from the first laser rangefinder to the mold surface. 测量 The distance (measured value) between the second laser rangefinder and the outer surface of the plastic layer during the production process. The central control device is electrically connected to the thickness measuring component, the heating detection device, the first drive device, the second drive device, the third drive device, and the fourth drive device. The thickness measuring component transmits the detection signal to the central control device, and the central control device controls the first drive device, the second drive device, the third drive device, the fourth drive device, and the extruder to operate according to the detection signal.

[0012] Preferably, a heating detection device is provided on the second support frame. The heating detection device includes a heating device and an infrared temperature sensor. The heating device is used to heat the mold surface and detect the temperature of the mold surface. The infrared temperature sensor is used to detect the temperature of the mold surface. Both the heating device and the infrared temperature sensor are electrically connected to the central control device.

[0013] Preferably, a fifth guide rail is provided along the length direction of the first support frame, and a sliding groove adapted to the fifth guide rail is installed at the bottom of the second support base. The fifth drive device installed on the first support frame includes a fifth motor and a fifth lead screw and nut assembly. The fifth motor is connected to the fifth lead screw of the fifth lead screw and nut assembly. The fifth nut of the fifth lead screw and nut assembly is installed at the bottom of the second support base. The fifth motor drives the fifth lead screw to rotate, thereby driving the fifth nut to move along the length direction of the fifth lead screw, and thus driving the second support base to slide along the fifth guide rail. A sixth guide rail is provided along the width direction of the first support frame, and a sixth driving device is provided at the bottom of the first support frame. The sixth driving device includes a sixth motor and a sixth gear and rack assembly. The sixth motor is mounted on the first support base, and the output end of the sixth motor is provided with the sixth gear of the sixth gear and rack assembly. The sixth rack of the sixth gear and rack assembly is mounted on the first support frame. The sixth motor drives the sixth gear to rotate, thereby causing the first support base to move along the length direction of the first rack, thereby adjusting the position of the first support base and facilitating the setting of molds with different diameters.

[0014] Preferably, the third driving device includes a third motor and a third lead screw and nut assembly. The third motor is connected to the third lead screw of the third lead screw and nut assembly. The third nut of the third lead screw and nut assembly is installed at the bottom of the first support frame. The third motor drives the third lead screw to rotate, thereby driving the third nut to move along the length direction of the third lead screw, and thus driving the first support frame to slide along the third guide rail.

[0015] Preferably, the second support frame includes a base support and a movable part. A fourth guide rail is provided on the base support, and a fourth slider is provided below the movable part. The fourth slider is slidably mounted on the fourth guide rail. A fourth driving device is mounted on the base support and drives the movable part to move along the direction of the fourth guide rail. The extruder is detachably mounted on the movable part.

[0016] Preferably, the heating detection device is mounted on the moving part.

[0017] Preferably, the fourth driving device includes a fourth motor and a fourth lead screw and nut assembly. The fourth motor is mounted on the base support. The fourth lead screw of the fourth lead screw and nut assembly is connected to the fourth motor. The fourth nut of the fourth lead screw and nut assembly is mounted on the moving part. The fourth motor drives the fourth lead screw to rotate, thereby driving the fourth nut to move along the length direction of the fourth lead screw, and thus driving the moving part and the extruder to slide along the fourth guide rail.

[0018] The technical solution provided in this application document has the following beneficial effects: 1. Precisely resolve core production contradictions: Specifically address the core issue of "thinning of pipe wall from small end to large end" in the winding production of variable diameter manholes. Real-time and accurate detection of pipe wall thickness is achieved through optical difference measurement using dual first laser rangefinders. Combined with a linkage control model between mold speed and diameter, the extrusion amount is dynamically adjusted, effectively avoiding the problems of material stretching and thinning (or even breaking) in the large diameter section and material accumulation and bulging in the small diameter section. This significantly improves the uniformity of wall thickness of variable diameter manholes, ensures product structural strength, and meets the standards for use in municipal engineering.

[0019] 2. Achieve adaptive wall thickness compensation: The central control system is equipped with dead error range control logic to avoid system oscillation caused by frequent adjustments. At the same time, combined with temperature calibration, it improves detection accuracy and adjustment stability, adapting to the production needs of various specifications of variable diameter dies such as φ600mm, φ700mm, φ800 / 1200mm, and φ1600mm. It has strong versatility and does not require separate parameter adjustment for different specifications of dies.

[0020] 3. Improve production efficiency and product qualification rate: Reduce scrap rate caused by uneven wall thickness, tensile fracture, and bulging, and reduce raw material waste; achieve automated production without manual intervention to adjust the extrusion volume, reduce labor costs, improve production continuity and efficiency, and solve the pain point of low product qualification rate of existing equipment.

[0021] 4. Breaking through industry technical limitations: Specifically addressing the working characteristics of the circumferential linear speed and diameter change position of the variable diameter rotary die, a linkage control model between the die speed and diameter was established, breaking through the limitations of existing straight pipe extrusion adjustment technology, filling the gap in the industry for adaptive control of extrusion volume of irregular diameter rotary dies, and demonstrating significant technical innovation and practicality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the physical structure of the first support frame mounting mold provided in Embodiment 1 of the present invention; Figure 2 yes Figure 1 Simplified main view in; Figure 3 yes Figure 2 The left view in the middle; Figure 4This is a schematic diagram of the structure for installing the thickness measuring components and heating detection device on the second support frame.

[0024] In the diagram: 1. First support frame; 11. First idler roller; 12. Fifth guide rail; 13. First drive device; 14. First support base; 15. Second support base; 151. Second idler roller; 16. Sixth guide rail; 2. Mold; 3. Second support frame; 31. Support part; 32. Moving part; 33. Fourth guide rail; 34. Fourth drive device; 4. Extruder; 6. Thickness measuring assembly; 61. First laser rangefinder; 62. Second laser rangefinder; 71. Third guide rail; 72. Third motor; 73. Third lead screw and nut assembly; 8. Heating detection device; 81. Heating device; 82. Infrared temperature sensor. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0026] This specific embodiment provides an adaptive adjustment method and device for rotary winding forming of variable diameter inspection wells, which solves the technical problem in the prior art that it is impossible to achieve adaptive compensation of wall thickness.

[0027] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the configurations represented in the embodiments below are not limited to those necessary for the solution of the invention described in the claims.

[0028] Reference Figures 1-4 This application provides a method for using a rotary winding forming adaptive device for variable diameter inspection wells, the specific steps of which are as follows: S1. Before the production line starts, the equipment is initialized. The first laser rangefinder 61 and the second laser rangefinder 62 of the thickness measuring component 6 simultaneously measure the distance from each other to the same circumferential cross-sectional surface of the mold 2 and transmit the measurement signals to the central control device for comparison. If the value detected by the first laser rangefinder 61 is not equal to the value detected by the second laser rangefinder 62, the position of the first laser rangefinder 61 or the second laser rangefinder 62 is adjusted until the values ​​detected by both are the same, and the benchmark calibration is completed. S2. Start the first and second drive devices to ensure that the first idler roller 11 and the second idler roller 21 simultaneously drive the heated mold 2 to rotate at a uniform speed. The encoder detects the rotational speed of the first idler roller 11 or the second idler roller 151, transmits the speed value to the central control device, and converts the speed value into the linear velocity of the mold 2's circumference. Simultaneously, the first laser rangefinder 61 detects its distance to the surface of the mold 2 and records it as L. 基准 The second laser rangefinder 62 detects the distance to the outer surface of the plastic layer and records it as L. 测量 The first laser rangefinder 61 and the second laser rangefinder 62 transmit the detected values ​​to the central control device. The central control device calculates the plastic layer thickness D based on the detected values, using the formula D=L. 基准 -L 测量 ; S3. The central control device has a preset thickness value D1 for the plastic layer, and the preset thickness value has an error range (a, b); the central control device compares the calculated plastic layer thickness D with the preset thickness value D1, and calculates the difference D. 差 D 差 =D-D1, when D 差 When the value is less than a, the central control device controls the extruder 4 to increase the extrusion volume or the die 2 to decrease the rotation speed, so that D 差 Adjust to within the error range (a, b); when D 差 When the value is greater than b, the central control device controls the extruder 4 to reduce the extrusion volume or the die rotation speed to increase D. 差 Adjust to within the thickness error range (a, b); when D 差 When the error range (a, b) is within the range, the central control device controls the extrusion amount of the extruder 4 and the rotation speed of the die to remain constant; where (a, b) can be (-0.2mm, +0.2mm).

[0029] S4. Repeat steps S2-S3 to achieve real-time detection of pipe wall thickness and adaptive adjustment of extrusion amount until the entire variable diameter inspection well is wound and formed, ensuring uniform pipe wall thickness throughout the process.

[0030] This design specifically addresses the core issue of "thinning of pipe wall from small end to large end" in the winding production of variable-diameter inspection manholes. Real-time, precise detection of pipe wall thickness is achieved through dual-laser differential ranging. Combined with a mold rotation speed and diameter linkage control model, the extrusion rate is dynamically adjusted, effectively preventing the material from stretching and thinning (or even breaking) in the large-diameter section and the accumulation and bulging of material in the small-diameter section. This significantly improves the wall thickness uniformity of variable-diameter inspection manholes, ensures product structural strength, meets municipal engineering standards, reduces scrap rates caused by uneven wall thickness, tensile fracture, and accumulation and bulging, and lowers raw material waste. Furthermore, it eliminates the need for manual intervention to adjust the extrusion rate, achieving automated production, reducing labor costs, improving production continuity and efficiency, and addressing the pain point of low product qualification rates in existing equipment.

[0031] In S2, a mold heating detection device 8 is also installed. S21. Start the first and second drive devices to make the first idler roller 11 and the second idler roller 151 synchronously drive the mold to rotate at a uniform speed. Due to the different molds, the rotation speeds of the first idler roller 11 and the second idler roller 151 are not the same. For example, Figure 1 As shown, the rotation speed of the second idler roller 151 is greater than that of the first idler roller 11; at the same time, the heating detection device 8 is activated, the heating device 81 of the heating detection device 8 heats the mold surface in the air, and the infrared temperature sensor 82 of the heating detection device 8 monitors the temperature of the mold surface in real time and transmits the temperature signal to the central control device. S22. The central control device has a preset temperature value. When the temperature of the mold surface detected by the infrared temperature sensor 82 is higher than the preset temperature value, the central control device controls the extruder 4 to start and the third drive device to operate, and starts the plastic winding operation. When the temperature of the mold surface detected by the infrared temperature sensor 82 is lower than the preset temperature value, the extruder 4 and the third drive device remain in the initial shutdown state, and the central control device controls the heating device 81 to increase the heating temperature so that the surface temperature of the mold 2 reaches the preset temperature value.

[0032] The present invention also provides an adaptive extrusion control device for rotary winding forming of variable diameter inspection wells, using the above processing method, including a third guide rail 71, a third slider, a first support frame 1, a first support seat 14, a second support seat 15, a thickness measuring component 6, a central control device, a second support frame 3, an extruder 4, a first drive device, a second drive device, a third drive device, a fourth drive device, and a heating detection device 8.

[0033] The third guide rail 71 is installed on the ground, the third slider is installed at the bottom of the first support frame 1, the third slider is slidably installed on the third guide rail 71, and the third drive device is installed on the ground to drive the first support frame 1 to move along the length of the third guide rail 71, so as to facilitate the adjustment of the mold 2 to move along the direction of the third guide rail 71.

[0034] To facilitate the rotation of the mold 2, a set of first rollers 11 is provided at one end of the first support frame 1. One of the first rollers 11 is mounted on the first support frame 1, and a first drive device 13 is mounted on the first support frame 1 and drives one of the first rollers 11 to rotate. The other roller is mounted on a first support base 14. A set of horizontally arranged second support bases 15 is slidably mounted at the other end of the first support frame 1. A second roller 151 is provided on the second support base 15, and a second drive device is mounted on the second support base 15 and drives the second roller 151 to rotate. The first roller 11 and the second roller 151 jointly support the mold 2. An encoder is provided on either the first roller 11 or the second roller 151, or both the first roller 11 and the second roller 151 are equipped with encoders, which facilitates the detection of the linear velocity of the roller's circumference. In this way, the mold 2 can rotate along its own axis and move horizontally.

[0035] Since the linear velocity of the circumference of the first idler roller 11 is equal to the linear velocity of the circumference of the first end of the mold, the linear velocity of the circumference of the first end of the mold can be obtained by calculating the linear velocity of the circumference of the first idler roller 11. Similarly, the linear velocity of the circumference of the second end of the mold can be calculated in the same way.

[0036] The second support frame 3 is located on one side of the first support frame 1. The extruder 4 is movably mounted on the second support frame 3. The fourth drive device drives the extruder 4 to approach or move away from the mold 2. The extruder 4 is used to extrude plastic and attach the plastic to the mold 2. As the mold 2 rotates under the drive of the first and second drive devices, and moves along the length of the third guide rail 71 under the drive of the third drive device, the mold 2 can rotate along its own axis and move horizontally to achieve the winding of plastic.

[0037] To facilitate the detection of the plastic layer thickness, a thickness measuring component 6 is mounted on the second support frame 3. This component monitors the thickness of the plastic layer formed by the plastic winding around the mold in real time. The thickness measuring component 6 includes a first laser rangefinder 61 and a second laser rangefinder 62. The measuring points of the first laser rangefinder 61 and the second laser rangefinder 62 are located on the same cross-section of the mold, arranged in a top-to-bottom opposing pattern. Specifically, the first laser rangefinder 61 and the second laser rangefinder 62 are respectively positioned at the die opening of the extruder 4. The thickness D of the plastic layer is calculated using the formula D=L. 基准 -L 测量 The calculation shows that, where D is the thickness of the plastic layer, and L... 基准 L represents the real-time distance reference value between the first laser rangefinder 61 and the mold surface in the initial state. 测量 This is the real-time distance measurement value from the second laser rangefinder 62 to the upper surface of the plastic layer during the production process, which facilitates direct detection of thickness data.

[0038] The heating detection device 8 is installed on the second support frame 3. The heating detection device 8 is used to heat the mold and detect the temperature of the mold surface. The central control unit is electrically connected to the thickness measuring component 6, the heating detection device 8, the first drive device, the second drive device, the third drive device, and the fourth drive device. The thickness measuring component 6 transmits the detection signal to the central control unit. The central control unit controls the first drive device, the second drive device, the third drive device, the fourth drive device, and the extruder 4 to operate according to the detection signal. The central control unit uses a PLC chip.

[0039] Specifically, when mold 2 rotates and moves, the first laser rangefinder 61 and the second laser rangefinder 62 simultaneously detect the distance between mold 2 and the plastic layer and feed it back to the central control device. The central control device performs algorithm calculations to determine the thickness of the plastic layer D and compares it with a preset value for the thickness of the plastic layer. This facilitates the control of the rotation speed of the first and second drive devices, as well as the extrusion volume of the extruder 4. The central control device has an error range (a, b). When D... 差 When D is less than a, it indicates that the plastic layer is relatively thin. It is necessary to increase the extrusion rate of extruder 4, or decrease the die speed, or simultaneously increase the extrusion rate of extruder 4 and decrease the die speed to increase the thickness of the plastic layer. 差 When the value is greater than b, it indicates that the plastic layer is relatively thick. It is necessary to reduce the extrusion amount of extruder 4, or increase the speed of the die, or simultaneously reduce the extrusion amount of extruder 4 and increase the speed of die 2 to reduce the thickness of the plastic layer. This real-time detection allows for easy adjustment of the plastic layer thickness at any time, ensuring the relative consistency of the plastic layer thickness and solving the problems of material thinning and piling in the winding forming of variable diameter inspection wells.

[0040] Further optimizing the scheme, the heating detection device 8 includes a heating device 81 and an infrared temperature sensor 82. The heating device 81 can achieve indirect heating and uses natural gas for heating and combustion. Specific equipment can be a metal mesh gas infrared radiation heater, an economical metal mesh gas infrared heater, or a portable metal mesh infrared heating device. Both the heating device 81 and the infrared temperature sensor 82 are electrically connected to the central control device. The central control device is equipped with a preset temperature value and a temperature error range (c, d). When the infrared temperature sensor 82 detects that the temperature is higher than the sum of the preset temperature value and the value d, the central control device can adjust the flame state of the heating device 81 to lower the temperature. When the infrared temperature sensor 82 detects that the temperature is lower than the sum of the preset temperature value and the value c, the central control device can adjust the flame state of the heating device 81 to raise the temperature.

[0041] To further optimize the design, a fifth guide rail 12 is provided on the first support frame 1 for movement. A sliding groove adapted to the fifth guide rail 12 is installed at the bottom of the second support base 15. Multiple fifth guide rails 12 can be set along the width direction of the support frame 1 to meet the needs of molds with different diameters. The fifth drive device includes a fifth motor and a fifth lead screw and nut assembly. The fifth motor is connected to the fifth lead screw of the fifth lead screw and nut assembly. The fifth nut of the fifth lead screw and nut assembly is installed at the bottom of the second support base 15. The fifth motor drives the fifth lead screw to rotate, which drives the fifth nut to move along the length direction of the fifth lead screw, thereby driving the second support base 15 to slide along the fifth guide rail 12, thus meeting the needs of setting molds of different lengths.

[0042] A sixth guide rail 16 is provided along the width direction of the first support frame 1, and a sixth driving device is provided at the bottom of the first support base. The sixth driving device includes a sixth motor and a sixth gear and rack assembly. The sixth motor is mounted on the first support base, and the output end of the sixth motor is provided with the sixth gear of the sixth gear and rack assembly. The sixth rack is mounted on the first support frame 1. The sixth motor drives the sixth gear to rotate, thereby causing the first support base to move along the length direction of the first rack, thereby adjusting the position of the first support base 14, which is convenient for setting molds of different diameters.

[0043] To further optimize the design and facilitate the movement of the first support frame, the third drive device includes a third motor 72 and a third lead screw and nut assembly 73. The third motor 72 is connected to the third lead screw of the third lead screw and nut assembly 73. The third nut of the third lead screw and nut assembly 73 is installed at the bottom of the first support frame 1. The third motor 72 drives the third lead screw to rotate, thereby driving the third nut to move along the length of the third lead screw, which in turn drives the first support frame 1 to slide along the third guide rail 71, thus realizing the movement of the mold 2.

[0044] To further optimize the design, and to facilitate the adjustment of the position of the extruder 4 so that plastic can be laid on both the large-diameter and small-diameter sections of the die simultaneously, the second support frame 3 includes a base support and a moving part. A fourth guide rail is provided on the base support, and a fourth slider is provided below the moving part. The fourth slider is slidably mounted on the fourth guide rail. A fourth drive device is mounted on the base support and drives the moving part to move along the direction of the fourth guide rail. The extruder 4 is detachably mounted on the moving part.

[0045] Specifically, the fourth drive device includes a fourth motor and a fourth lead screw and nut assembly. The fourth motor is mounted on the base support. The fourth lead screw of the fourth lead screw and nut assembly is connected to the fourth motor. The fourth nut of the fourth lead screw and nut assembly is mounted on the moving part. The fourth motor drives the fourth lead screw to rotate, thereby driving the fourth nut to move along the length of the fourth lead screw, and in turn driving the moving part and the extruder 4 to slide along the fourth guide rail.

[0046] To ensure the consistency of the test data, the heating test device is installed on the moving part and can move with the moving part to ensure the consistency of the heating test device and the mold position.

[0047] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., used herein to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description herein, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0050] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the content not described in detail in some embodiments can be referred to the same or similar content in other embodiments. The multiple solutions provided in this application contain their own basic solutions, are independent of each other, and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects.

[0051] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for adaptive adjustment of rotary winding forming of variable diameter inspection wells, characterized in that, include: S1. Before the production line is started, the equipment is initialized. The first laser rangefinder (61) and the second laser rangefinder (62) of the thickness measuring component (6) simultaneously measure the distance to the same circumferential cross-sectional surface of the mold (2) and transmit the measurement signal to the central control device for comparison. If the value detected by the first laser rangefinder (61) is not equal to the value detected by the second laser rangefinder (62), the position of the first laser rangefinder (61) or the second laser rangefinder (62) is adjusted until the values ​​detected by the two are the same, and the benchmark calibration is completed. S2. Start the first and second drive devices to make the first roller (11) and the second roller (21) drive the heated mold (2) to rotate at a uniform speed. The encoder detects the rotation speed of the first roller (11) or the second roller (21), transmits the speed value to the central control device, and converts the speed value into the linear velocity of the mold (2) circumference. At the same time, the first laser rangefinder (61) detects the distance from it to the surface of the mold (2) and records it as L. 基准 The second laser rangefinder (62) detects its distance to the outer surface of the plastic layer and records it as L. 测量 The first laser rangefinder (61) and the second laser rangefinder (62) transmit the detected values ​​to the central control device. The central control device calculates the plastic layer thickness D based on the detected values, using the formula D=L. 基准 -L 测量 ; S3. The central control device has a preset value for the thickness of the plastic layer, and the preset value has an error range (a, b); the central control device compares the calculated thickness D of the plastic layer with the preset value D1, and calculates the difference D. 差 D 差 =D-D1, when D 差 When the value is less than a, the central control device controls the extruder (4) to increase the extrusion volume or the die (2) to decrease the rotation speed, so that D 差 Adjust to within the error range (a, b); when D 差 When the value is greater than b, the central control device controls the extruder (4) to reduce the extrusion amount or the die (2) to increase the rotation speed, so that D 差 Adjust to within the error range (a, b); when D 差 When within the error range (a, b), the central control device controls the extrusion amount of the extruder (4) and the rotation speed of the die (2) to remain constant; S4. Repeat steps S2-S3 to achieve real-time detection of pipe wall thickness and adaptive adjustment of extrusion amount until the entire variable diameter inspection well is wound and formed, ensuring uniform pipe wall thickness throughout the process.

2. The adaptive adjustment method for rotary winding forming of variable diameter inspection wells according to claim 1, characterized in that, S2 also includes a mold (2) heating module. S21. Start the heating detection device (8). The heating device (81) of the heating detection device (8) heats the surface of the mold (2). The infrared temperature sensor (82) of the heating detection device (8) monitors the temperature of the surface of the mold (2) in real time and transmits the temperature signal to the central control device. S22. The central control device is equipped with a temperature preset value. When the surface temperature of the mold (2) detected by the infrared temperature sensor (82) is higher than the temperature preset value, the central control device controls the extruder (4) to start and the third drive device to operate, and starts the plastic winding operation. When the surface temperature of the mold (2) detected by the infrared temperature sensor (82) is lower than the temperature preset value, the extruder (4) and the third drive device remain in the initial shutdown state, and the central control device controls the heating device (81) to increase the heating temperature so that the surface temperature of the mold (2) reaches the temperature preset value.

3. A rotary winding and adaptive extrusion control device for variable diameter inspection wells, using the method described in claim 1, characterized in that... It includes a third guide rail, a third slider, a first support frame (1), a first support base (14), a second support base (15), a thickness measuring component (6), a central control device, a second support frame (3), an extruder (4), a first drive device, a second drive device, a third drive device, and a fourth drive device (34). The third guide rail (71) is installed on the ground, the third slider is installed at the bottom of the first support frame (1), the third slider is slidably installed on the third guide rail (71), and the third driving device is installed on the ground to drive the first support frame (1) to move along the length direction of the third guide rail (71). A set of first rollers (11) is provided at one end of the first support frame (1). A first drive device (13) is installed on the first support frame (1) and drives the first rollers (11) to rotate. A set of second support seats (15) arranged laterally is slidably installed at the other end of the first support frame (1). A second roller (151) is provided on the second support seat (15). The second drive device is installed on the second support seat (15) and drives the second roller (151) to rotate. The first roller (11) and the second roller (151) jointly support the mold (2). An encoder is provided on the first roller (11) or the second roller (21). The second support frame (3) is disposed on one side of the first support frame (1), the extruder (4) is movably mounted on the second support frame (3), the fourth drive device (34) drives the extruder (4) to move closer to or away from the mold (2), and the extruder (4) is used to extrude plastic; The thickness measuring component (6) is mounted on the second support frame (3) and is used to monitor the thickness of the plastic layer formed by the plastic being wound around the mold (2) in real time. The thickness measuring component (6) includes a first laser rangefinder (61) and a second laser rangefinder (62). The distances from the first laser rangefinder (61) and the second laser rangefinder (62) to the surface of the mold (2) are equal, and they are in the same circumferential section of the mold (2). The thickness of the plastic layer is D, where D=L. 基准 -L 测量 Where D is the actual thickness of the plastic layer, and L 基准 L is the distance (reference value) between the first laser rangefinder (61) and the surface of the mold (2) in the initial state. 测量 The distance (measured value) from the second laser rangefinder (62) to the outer surface of the plastic layer during the production process; The central control device is electrically connected to the thickness measuring component (6), the heating detection device (8), the first drive device, the second drive device, the third drive device, and the fourth drive device (34). The thickness measuring component (6) transmits the detection signal to the central control device, and the central control device controls the first drive device, the second drive device, the third drive device, the fourth drive device (34), and the extruder (4) to operate according to the detection signal.

4. The adaptive extrusion control device for rotary winding forming of variable diameter inspection wells according to claim 3, characterized in that, The second support frame (3) is provided with a heating detection device (8), which includes a heating device (81) and an infrared temperature sensor (82). The heating device (81) is used to heat the surface of the mold (2) and detect the temperature of the surface of the mold (2). The infrared temperature sensor (82) is used to detect the temperature of the surface of the mold (2). The heating device (81) and the infrared temperature sensor (82) are both electrically connected to the central control device.

5. The adaptive extrusion control device for rotary winding forming of variable diameter inspection wells according to claim 3, characterized in that, A fifth guide rail (12) is provided along the length direction of the first support frame (1). A sliding groove adapted to the fifth guide rail (12) is installed at the bottom of the second support seat (15). The fifth drive device is installed on the first support frame (1) and includes a fifth motor and a fifth lead screw nut assembly. The fifth motor is connected to the fifth lead screw of the fifth lead screw nut assembly. The fifth nut of the fifth lead screw nut assembly is installed at the bottom of the second support seat (15). The fifth motor drives the fifth lead screw to rotate, drives the fifth nut to move along the length direction of the fifth lead screw, and then drives the second support seat (15) to slide along the fifth guide rail (12). A sixth guide rail is provided along the width direction of the first support frame (1), and a sixth driving device is provided at the bottom of the first support frame (1). The sixth driving device includes a sixth motor and a sixth gear and rack assembly. The sixth motor is mounted on the first support base (14), and the output end of the sixth motor is provided with the sixth gear of the sixth gear and rack assembly. The sixth rack of the sixth gear and rack assembly is mounted on the first support frame (1). The sixth motor drives the sixth gear to rotate, thereby causing the first support base (14) to move along the length direction of the first rack, thereby adjusting the position of the first support base (14) to facilitate the setting of molds (2) of different diameters.

6. The adaptive extrusion control device for rotary winding forming of variable diameter inspection wells according to claim 3, characterized in that, The third driving device includes a third motor (72) and a third lead screw and nut assembly (73). The third motor (72) is connected to the third lead screw of the third lead screw and nut assembly (73). The third nut of the third lead screw and nut assembly (73) is installed at the bottom of the first support frame (1). The third motor (72) drives the third lead screw to rotate, thereby driving the third nut to move along the length direction of the third lead screw, and thus driving the first support frame (1) to slide along the third guide rail (71).

7. The adaptive extrusion control device for rotary winding forming of variable diameter inspection wells according to claim 3, characterized in that, The second support frame (3) includes a base support part (31) and a moving part (32). A fourth guide rail (33) is provided on the base support part (31). A fourth slider is provided below the moving part (32). The fourth slider is slidably mounted on the fourth guide rail (33). The fourth driving device (34) is mounted on the base support part (31) and drives the moving part (32) to move along the direction of the fourth guide rail (33). The extruder (4) is detachably mounted on the moving part (32).

8. The adaptive extrusion control device for rotary winding forming of variable diameter inspection wells according to claim 7, characterized in that, The heating detection device (8) is mounted on the moving part (32).

9. The adaptive extrusion control device for rotary winding forming of variable diameter inspection wells according to claim 7, characterized in that, The fourth drive device (34) includes a fourth motor and a fourth lead screw and nut assembly. The fourth motor is mounted on the base support (31). The fourth lead screw of the fourth lead screw and nut assembly is connected to the fourth motor. The fourth nut of the fourth lead screw and nut assembly is mounted on the moving part (32). The fourth motor drives the fourth lead screw to rotate, thereby driving the fourth nut to move along the length direction of the fourth lead screw, and thus driving the moving part (32) and the extruder (4) to slide along the fourth guide rail (44).

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