A kind of PVC pipeline wall thickness laser scanning on-line detection equipment

Abstract

The utility model provides a kind of laser scanning on-line detection equipment of PVC pipeline wall thickness, belong to PVC pipeline technical field, this laser scanning on-line detection equipment of PVC pipeline wall thickness, including processing seat, the front end fixedly connected with first fixed plate of processing seat, the side end of first fixed plate is equipped with limit hole, the top of first fixed plate is equipped with installation slot, equipment is equipped with special positioning mechanism, including limit disc, adjusting disc, five positioning rods etc., positioning rod is expanded radially under the action of adjusting assembly, tightly adhere to pipeline by suction cup, realize the circumferential positioning and stable clamping of pipeline, simultaneously, arc support disc is supported from below to pipeline, avoid that pipeline is inclined due to dead weight, these structures jointly act, effectively prevent the radial deviation and axial movement of pipeline, guarantee the accuracy of laser scanning track, to improve the precision of wall thickness data acquisition.

Description

Technical Field

[0001] This utility model belongs to the field of PVC pipe technology, specifically relating to an online laser scanning detection device for PVC pipe wall thickness. Background Technology

[0002] In existing PVC pipe wall thickness testing technologies, traditional manual sampling methods are inefficient and susceptible to human error, making it difficult to meet the online testing needs of large-scale production. Meanwhile, some automated testing equipment suffers from insufficient positioning stability. When the pipe experiences radial or axial displacement, the laser scanning trajectory is prone to deviating from the testing area, leading to a decrease in the accuracy of wall thickness data acquisition. Furthermore, most equipment has poor adaptability to pipes of different diameters, and adjusting the laser scanning angle requires manual intervention, which not only increases operational complexity but also prolongs the testing interval, affecting the continuous operation of the production line.

[0003] To address the aforementioned issues, this utility model aims to provide an online laser scanning inspection device for PVC pipe wall thickness. It achieves stable clamping of pipes of different diameters through a multi-component collaborative positioning mechanism, and, in conjunction with an automatically adjustable laser scanning component, ensures that the laser beam always irradiates the pipe wall perpendicularly, thereby improving inspection accuracy and efficiency. Simultaneously, an integrated intelligent control module enables adaptive operation of the equipment, reducing manual operation steps and meeting the actual needs of continuous inspection on production lines. Utility Model Content

[0004] The purpose of this invention is to provide an online laser scanning inspection device for PVC pipe wall thickness. It aims to solve the problems in the prior art where the laser scanning trajectory easily deviates from the inspection area when the pipe experiences radial offset or axial movement, resulting in a decrease in the accuracy of wall thickness data acquisition. At the same time, most devices have poor adaptability to pipes of different diameters, and adjusting the laser scanning angle requires manual intervention, which not only increases the complexity of operation but also prolongs the inspection interval time, affecting the continuous operation of the production line.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A laser scanning online inspection device for PVC pipe wall thickness, comprising:

[0007] A processing base is provided, with a first fixing plate fixedly connected to the front end of the processing base. A limit hole is opened on one side of the first fixing plate, and an installation groove is opened on the top of the first fixing plate. A cylinder is fixedly connected to one side of the processing base, and a second motor is fixedly connected to the telescopic end of the cylinder. A fixing plate is fixedly connected to the telescopic end of the cylinder. Two laser scanning devices are provided inside the first fixing plate.

[0008] It also includes a positioning mechanism located on one side of the cylinder, which is used to position the PVC pipe for stable testing.

[0009] As a preferred embodiment of this utility model, the positioning mechanism includes:

[0010] A limiting plate, wherein the limiting plate is fixedly connected to one end of a fixed plate;

[0011] An adjusting disc, which is fixedly connected to the output end of the second motor;

[0012] Five positioning rods are slidably connected to the adjustment plate, and suction cups are fixedly connected to the far ends of the five positioning rods. The outer surfaces of the five positioning rods are slidably connected to the limiting plate.

[0013] An adjustment component is provided in the mounting slot and is used to adjust the angle of the two laser scanning devices.

[0014] As a preferred embodiment of this utility model, the adjustment component includes:

[0015] An adjusting gear is rotatably connected to a mounting slot, and both laser scanning devices are fixedly connected to the inner circumference of the adjusting gear.

[0016] A first motor is fixedly connected to the bottom end of the processing base, and a transmission gear is fixedly connected to the output end of the first motor. The transmission gear meshes with an adjusting gear.

[0017] As a preferred embodiment of this utility model, an intelligent controller is fixedly connected to the front end of the processing base.

[0018] In a preferred embodiment of this utility model, a second fixed plate is fixedly connected to one side of the first fixed plate, and screws are fixedly connected to the processing seat and the second fixed plate respectively. Limiting rods are slidably connected to the processing seat and the second fixed plate. Arc-shaped support disks are rotatably connected to the adjacent ends of the two screws, and the two arc-shaped support disks are fixedly connected to the circumferential surfaces of the two limiting rods respectively.

[0019] As a preferred embodiment of this utility model, a support base is fixedly connected to each of the four corners of the bottom of the processing base.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. In this solution, the equipment is equipped with a dedicated positioning mechanism, including a limiting plate, an adjusting plate, and five positioning rods. The positioning rods can expand radially under the action of the adjusting component and fit tightly against the pipe through the suction cup to achieve circumferential positioning and stable clamping of the pipe. At the same time, the arc-shaped support plate supports the pipe from below to prevent the pipe from sagging due to its own weight. These structures work together to effectively prevent radial displacement and axial movement of the pipe, ensuring the accuracy of the laser scanning trajectory and thus improving the accuracy of wall thickness data acquisition.

[0022] Through automated laser scanning and online inspection, PVC pipes can be continuously inspected without human intervention. This enables full-circumference wall thickness measurement of each pipe, greatly improving inspection efficiency and coverage. At the same time, the laser scanning equipment collects data based on the principle of laser reflection, reducing interference from human factors, resulting in higher inspection accuracy and more reliable data.

[0023] 2. In this solution, the equipment's adjustment components, first motor, transmission gears, etc., can automatically adjust the angles of the two laser scanning devices according to the pipe diameter, making them adaptable to pipes of different diameters. The positioning rod in the positioning mechanism can adapt to the clamping requirements of pipes of different diameters by adjusting the expansion size. There is no need to manually adjust the laser scanning angle and replace the positioning components, which reduces the complexity of operation and the detection interval time, ensures the continuous operation of the production line, and improves production efficiency. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a perspective view of the present utility model;

[0026] Figure 2 This is a first-person exploded perspective view of the present invention;

[0027] Figure 3 This is a first-view sectional perspective view of the present invention;

[0028] Figure 4 In this utility model Figure 3 A magnified view of part A.

[0029] In the diagram: 1. Machining base; 2. First fixing plate; 201. Mounting slot; 3. Intelligent controller; 4. Support base; 5. Limiting hole; 6. First motor; 7. Transmission gear; 8. Adjusting gear; 801. Laser scanning equipment; 9. Second fixing plate; 10. Positioning rod; 11. Limiting rod; 12. Cylinder; 13. Arc-shaped support plate; 14. Screw; 15. Second motor; 16. Fixing plate; 17. Limiting plate; 18. Adjusting plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0031] Please see Figures 1-4 The present invention provides the following technical solution:

[0032] A laser scanning online inspection device for PVC pipe wall thickness, comprising:

[0033] The processing base 1 has a first fixing plate 2 fixedly connected to its front end. A limit hole 5 is opened on one side of the first fixing plate 2, and an installation groove 201 is opened on the top of the first fixing plate 2. A cylinder 12 is fixedly connected to one side of the processing base 1. A second motor 15 is fixedly connected to the telescopic end of the cylinder 12, and a fixing plate 16 is fixedly connected to the telescopic end of the cylinder 12. Two laser scanning devices 801 are provided inside the first fixing plate 2.

[0034] It also includes a positioning mechanism, which is located on one side of the cylinder 12 and is used to position the PVC pipe for stable testing.

[0035] In a specific embodiment of this utility model, the processing base 1 serves as the basic frame of the equipment, used to fix and connect core components such as the first fixing plate 2 and the cylinder 12, ensuring that each component maintains a stable relative position during the testing process, providing structural support for the operation of the entire equipment, and serving as the installation reference for all components.

[0036] By fixing it to the front end of the processing base 1, it provides installation space for the limiting hole 5, the mounting groove 201 and the laser scanning device 801. Its position design ensures that the PVC pipe is within the effective range of laser scanning when it enters the detection area, while the auxiliary positioning mechanism forms a stable constraint on the pipe.

[0037] The diameter of the limiting hole 5 is adapted to the outer diameter of the PVC pipe to be inspected. When the pipe passes through, it can limit its horizontal sway and prevent the pipe from deviating, thus avoiding deviation of the laser scanning trajectory and providing preliminary position constraints for subsequent accurate inspection.

[0038] Mounting slot 201 is specifically designed to install two laser scanning devices 801. Its size and angle are designed according to the laser scanning requirements to ensure that the laser scanning device 801 can be aligned with the detection surface of the PVC pipe, such as the circumferential wall, at a preset angle, thus ensuring the stability of the scanning beam.

[0039] The cylinder 12 drives the second motor 15 and the fixed plate 16 to move closer to or away from the PVC pipe through the telescopic movement of the telescopic end. It can adapt to pipes of different lengths. At the same time, it provides axial pressure to the pipe by adjusting the telescopic amount, and enhances the stability of the pipe in conjunction with the positioning mechanism.

[0040] The second motor 15 serves as the driving source, and its output shaft drives the fixed disk 16 to rotate, thereby driving the clamped PVC pipe to rotate around its own axis, so that the circumference of the pipe can pass through the laser scanning area evenly, realizing continuous detection of the full circumference wall thickness.

[0041] The fixed plate 16 contacts the end face of the pipe and clamps the pipe under the push of the cylinder 12. When the second motor 15 drives it, it rotates synchronously with the motor and drives the pipe to rotate stably, avoiding the pipe from slipping or deviating, and ensuring the synchronization of laser scanning and pipe rotation.

[0042] Two laser scanning devices 801 emit laser beams to irradiate the surface of PVC pipes and collect data on the inner and outer contours of the pipes using the principle of laser reflection, such as triangulation. By calculating the distance between the inner and outer contours, the wall thickness information is obtained in real time, making it the core component of the inspection.

[0043] The positioning mechanism is located on one side of the cylinder 12 and cooperates with the limiting hole 5 and the fixing plate 16 to further fix the PVC pipe radially or axially, counteracting the vibration and offset during pipe rotation or transportation, ensuring that the pipe is in a stable state during testing, and ensuring the accuracy of the scanning data. It should be noted that the specific model of cylinder 12, second motor 15 and intelligent controller 3 used shall be selected by those skilled in the art, and the above-mentioned cylinder 12, second motor 15 and intelligent controller 3 are all existing technologies, which will not be elaborated in this solution.

[0044] Please refer to the details. Figures 1-4 The positioning mechanisms include:

[0045] Limiting plate 17 is fixedly connected to one end of fixed plate 16;

[0046] Adjustment disc 18 is fixedly connected to the output end of the second motor 15;

[0047] Five positioning rods 10 are slidably connected to the adjusting plate 18. The far ends of the five positioning rods 10 are fixedly connected to suction cups. The outer surfaces of the five positioning rods 10 are slidably connected to the limiting plate 17.

[0048] An adjustment component is located in the mounting slot 201 and is used to adjust the angle of the two laser scanning devices 801.

[0049] In this embodiment: when the PVC pipe enters the detection area, the cylinder 12 pushes the fixed plate 16 and the limiting plate 17 connected to it closer to the pipe end face. At this time, the positioning rod 10 is in a contracted state with the smallest diameter to allow the pipe to be inserted. After the second motor 15 starts, it drives the adjusting plate 18 to rotate. Through the spiral groove structure inside the adjusting plate 18, the five positioning rods 10 are forced to expand radially synchronously along the guide hole of the limiting plate 17 until the suction cup contacts and presses the pipe end face, forming uniform radial pressure and end face adsorption force, and accurately aligning the pipe axis with the rotation center of the equipment. At the same time, the adjusting component automatically adjusts the irradiation angle of the laser scanning device 801 according to the expansion size of the positioning rod 10, i.e., the actual diameter of the pipe, to ensure that the laser beam always irradiates the pipe wall perpendicularly. When the second motor 15 drives the pipe to rotate, the positioning mechanism stabilizes the rotation accuracy of the pipe through the guiding constraint of the limiting plate 17 and the buffering and vibration reduction of the suction cup, so that the laser scanning device 801 can continuously and accurately collect the wall thickness data of the entire circumference of the pipe, and realize efficient adaptive detection of PVC pipes of different diameters.

[0050] Please refer to the details. Figures 1-3 The adjustment components include:

[0051] Adjusting gear 8 is rotatably connected in mounting groove 201, and both laser scanning devices 801 are fixedly connected to the inner circumference of adjusting gear 8;

[0052] The first motor 6 is fixedly connected to the bottom end of the processing base 1. The output end of the first motor 6 is fixedly connected to the transmission gear 7, which meshes with the adjusting gear 8.

[0053] In this embodiment: the first motor 6 in the adjustment assembly is started, and the transmission gear 7 at its output end drives the meshing adjustment gear 8 to rotate. Since the two laser scanning devices 801 are fixed on the inner circumference of the adjustment gear 8, the laser scanning devices 801 rotate synchronously with the adjustment gear 8, thereby adjusting to a scanning angle that matches the current pipe diameter. Throughout the detection process, the limiting plate 17 always guides and limits the sliding of the positioning rod 10, ensuring the stability of the movement trajectory of the positioning rod 10. Combined with the suction force of the suction cup, the PVC pipe remains stable when driven to rotate by the second motor 15, avoiding deviation or shaking, and ensuring that the laser scanning device 801 can accurately and continuously detect the pipe wall thickness.

[0054] Please refer to the details. Figure 2 The front end of the processing base 1 is fixedly connected to the intelligent controller 3.

[0055] In this embodiment: the intelligent controller 3 is fixed to the front end of the processing base 1. It can receive the wall thickness data transmitted by the laser scanning device 801, analyze and process it in real time, and send instructions to the first motor 6, the second motor 15, and the cylinder 12. For example, it can automatically adjust the angle of the laser scanning device 801 according to the pipe diameter and control the clamping force of the positioning mechanism. At the same time, it integrates an alarm function. When an abnormal wall thickness is detected, it can trigger an alarm and display fault information in a timely manner.

[0056] Please refer to the details. Figures 1-4 A second fixed plate 9 is fixedly connected to one side of the first fixed plate 2. Screws 14 are fixedly connected to the processing base 1 and the second fixed plate 9 respectively. Limiting rods 11 are slidably connected to the processing base 1 and the second fixed plate 9. Arc-shaped support plates 13 are rotatably connected to the close ends of the two screws 14. The two arc-shaped support plates 13 are fixedly connected to the circumferential surfaces of the two limiting rods 11 respectively.

[0057] In this embodiment: the second fixing plate 9 and the processing seat 1 cooperate to form a double support structure. The screw 14 is respectively inserted into the processing seat 1 and the second fixing plate 9. Rotating the screw 14 can push the arc-shaped support plate 13 to slide along the limiting rod 11 to ensure that the support plate does not deviate. The two arc-shaped support plates 13 form symmetrical support from below the pipe, which is suitable for PVC pipes of different diameters. It cooperates with the radial positioning of the positioning mechanism to further enhance the stability of the pipe during rotation detection and avoid sagging deformation caused by the weight of the pipe.

[0058] Please refer to the details. Figures 1-3 Each of the four corners of the bottom of the processing base 1 is fixedly connected to a support base 4.

[0059] In this embodiment, four support seats 4 are fixed at the four corners of the bottom of the processing seat 1. By adjusting the height of the support seats 4, the processing seat 1 can be kept horizontal, ensuring that the whole equipment is aligned with the production line conveyor track.

[0060] The working principle and usage process of this utility model are as follows: When the PVC pipe enters the inspection area, it first passes through the limiting hole 5 on the first fixing plate 2 for initial guidance. Then, the cylinder 12 is activated, and its telescopic end pushes the fixing plate 16, the limiting plate 17, the second motor 15, and the adjusting plate 18 closer to the pipe end face. At this time, the five positioning rods 10 are in a retracted state to allow the pipe to be inserted. After the pipe is in place, the second motor 15 drives the adjusting plate 18 to rotate. Under the combined action of the spiral groove inside the adjusting plate 18 and the guide hole of the limiting plate 17, the five positioning rods 10 expand radially synchronously, so that the suction cups at the rod ends tightly adhere to the inner or outer wall of the pipe, realizing the circumferential positioning and stable clamping of the pipe. At the same time, the intelligent controller 3 calculates the pipe diameter based on the expansion dimension of the positioning rods 10 and controls the first motor 6 to start, which in turn drives the transmission gears. Wheel 7 drives the adjusting gear 8 to rotate, adjusting the two laser scanning devices 801 fixed to the inner wall of the adjusting gear 8 to a suitable angle, ensuring that the laser beam irradiates the pipe wall perpendicularly. During this process, rotating the screw 14 on the processing base 1 and the second fixed plate 9 can push the arc-shaped support plate 13 to slide along the limit rod 11, forming symmetrical support for the pipe from below and preventing the pipe from sagging due to its own weight. Then, the second motor 15 drives the pipe to rotate, and the laser scanning device 801 collects the full circumference wall thickness data in real time and transmits it to the intelligent controller 3. If an abnormality is detected, the intelligent controller 3 immediately triggers an alarm. Throughout the entire inspection process, the support base 4 at the bottom of the processing base 1 is adjusted in height to ensure that the equipment is level, ensuring that all components operate in coordination, and achieving efficient and accurate online inspection of PVC pipes of different diameters.

[0061] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A laser scanning online inspection device for PVC pipe wall thickness, characterized in that, include: A processing base (1) is fixedly connected to a first fixing plate (2) at its front end. A limit hole (5) is opened on one side of the first fixing plate (2). An installation groove (201) is opened on the top of the first fixing plate (2). A cylinder (12) is fixedly connected to one side of the processing base (1). A second motor (15) is fixedly connected to the telescopic end of the cylinder (12). A fixing plate (16) is fixedly connected to the telescopic end of the cylinder (12). Two laser scanning devices (801) are provided inside the first fixing plate (2). It also includes a positioning mechanism located on one side of the cylinder (12), which is used to position the PVC pipe for stable testing.

2. The laser scanning online inspection device for PVC pipe wall thickness according to claim 1, characterized in that: The positioning mechanism includes: A limiting plate (17) is fixedly connected to one end of a fixed plate (16); Adjustment disc (18), which is fixedly connected to the output end of the second motor (15); Five positioning rods (10) are slidably connected to the adjustment plate (18). The far ends of the five positioning rods (10) are fixedly connected to suction cups. The outer surfaces of the five positioning rods (10) are slidably connected to the limiting plate (17). An adjustment component is provided in the mounting slot (201) and is used to adjust the angle of the two laser scanning devices (801).

3. The laser scanning online inspection device for PVC pipe wall thickness according to claim 2, characterized in that: The adjustment component includes: Adjusting gear (8), the adjusting gear (8) is rotatably connected in the mounting groove (201), and the two laser scanning devices (801) are fixedly connected to the inner circumference of the adjusting gear (8); The first motor (6) is fixedly connected to the bottom end of the processing base (1). The output end of the first motor (6) is fixedly connected to a transmission gear (7), which meshes with the adjusting gear (8).

4. The laser scanning online inspection device for PVC pipe wall thickness according to claim 3, characterized in that: The front end of the processing base (1) is fixedly connected to an intelligent controller (3).

5. The laser scanning online inspection device for PVC pipe wall thickness according to claim 4, characterized in that: A second fixed plate (9) is fixedly connected to one side of the first fixed plate (2). Screws (14) are fixedly connected to the processing seat (1) and the second fixed plate (9). Limiting rods (11) are slidably connected to the processing seat (1) and the second fixed plate (9). Arc-shaped support plates (13) are rotatably connected to the close ends of the two screws (14). The two arc-shaped support plates (13) are fixedly connected to the circumferential surfaces of the two limiting rods (11).

6. The laser scanning online inspection device for PVC pipe wall thickness according to claim 5, characterized in that: Support seats (4) are fixedly connected to the four corners of the bottom of the processing seat (1).

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