Surface defect visual detection device and method for seamless steel tube production

Abstract

The invention relates to the technical field of seamless steel tube visual inspection, and particularly discloses a surface defect visual inspection device and method for seamless steel tube production, comprising a conveyor and a visual sensor for scanning a seamless steel tube to be detected to play a detection role, and further comprising an indicating device slidably mounted on the conveyor, under the driving of a driving source, axially moving along the to-be-detected seamless steel pipe; the fixed cylinder is rotationally mounted at one end of the conveyor and used for driving the seamless steel tube to be detected to rotate; and the supporting blocks are distributed around the fixing cylinder, and the supporting blocks can be driven by the driving source to expand or contract so as to support the seamless steel pipe to be detected. The indicating device is arranged on one side of the seamless steel pipe to be detected, so that after the visual sensor detects the defect on the seamless steel pipe to be detected, the coordinate information of the defect position can be collected and then sent to the indicating device, and the pointer on the indicating device can point to the defect position of the seamless steel pipe to be detected; and observation of operators is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of seamless steel pipe visual inspection, and in particular to a surface defect visual inspection device and method for seamless steel pipe production. Background Art

[0002] Seamless steel pipe is a steel pipe without welds. It is made of hot-rolled steel, or when necessary, the hot-rolled pipe is cold-processed to obtain the necessary shape, size and performance. Seamless steel pipe has a hollow cross-section, and the inner and outer surfaces are smooth and flat, and it is not easy to scale, which makes the fluid flow in the pipeline with less resistance and can achieve more efficient transportation. The seamless steel pipe visual inspection device is an important technology in the field of modern industrial inspection. It combines high-precision sensors, machine vision algorithms and real-time data processing technology to achieve efficient and accurate inspection of seamless steel pipes; For example, the patent with the prior art publication number CN219455907U, entitled "A seamless steel pipe defect detection device based on machine vision", includes a workbench, a support platform at the rear of the workbench, a lifting mechanism is provided on the upper part of the workbench and the support platform, an internal detection mechanism is provided on the upper part of the workbench, two detection plates are provided on the upper part of the workbench, a fixing mechanism is provided on the upper part of the workbench, an arc-shaped table is provided on the upper part of the workbench, the rear part of the arc-shaped table is fixedly connected to the support platform, and a sliding wheel is provided at the bottom of the support platform, so that the staff can simultaneously detect internal and external defects of the steel pipe, and it is convenient to place the steel pipe and fix it at the same time, and it is convenient to adjust the height of the detector to meet the detection of steel pipes of different specifications, and it plays a protective role on the detector; When the steel pipe is clamped and tested in the above-mentioned prior art, the clamping component will block part of the steel pipe, resulting in incomplete detection. In addition, during the detection process, the defect position cannot be accurately indicated, resulting in inconvenience in use. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] The present invention provides a surface defect visual detection device and method for seamless steel pipe production, which can solve the problem of inconvenience in use of the prior art. The specific scheme is as follows: On the one hand, the present invention provides a surface defect visual inspection device for seamless steel pipe production, comprising a conveyor and a visual sensor, wherein the visual sensor is used to scan the seamless steel pipe to be inspected to play a detection role, and further comprises: The indicating device is slidably mounted on the conveyor and moves axially along the seamless steel pipe to be inspected under the drive source; The fixed cylinder is rotatably mounted at one end of the conveyor and is used to drive the seamless steel pipe to be inspected to rotate; There are several support blocks distributed around the fixed cylinder. Under the drive of the driving source, the several support blocks can expand or contract to support the seamless steel pipe to be tested; Among them, after the visual sensor detects the defect position of the seamless steel pipe to be inspected, the pointer on the indicating device points to the defect position of the seamless steel pipe to be inspected.

[0005] Preferably, it also includes a cleaning roller, which rotates under the drive of a driving source to vertically scrape the outer wall of the seamless steel pipe to be inspected.

[0006] Preferably, it also includes: The scraping strip moves axially along the seamless steel pipe to be inspected under the drive of the driving source, and scrapes the outer wall of the seamless steel pipe to be inspected transversely.

[0007] Preferably, it also includes: A dust collecting trough is provided at one end of the scraping strip close to the seamless steel pipe to be inspected, and is used to collect the scraped dust; A dust collecting chamber is provided inside the scraping strip and communicated with the dust collecting groove; The dust exhaust box is fixedly connected to the outer wall of the scraping strip and communicated with the dust collecting cavity, and is used for exhausting the dust in the dust collecting groove.

[0008] Preferably, it also includes: A rotating shaft, rotatably mounted inside the fixed cylinder; a fourth gear connected to one end of the rotating shaft; a rack connected to one end of the support block and meshing with the fourth gear; Among them, when the rotating shaft rotates to one side, the fourth gear can drive the rack and the support block to move. When the end of the support block abuts against the inner wall of the seamless steel pipe to be tested, the fixed cylinder, the seamless steel pipe to be tested and the support block rotate synchronously.

[0009] Preferably, there are a plurality of visual sensors, and the plurality of visual sensors are fixed by a mounting beam and a mounting frame.

[0010] Preferably, it also includes: A second gear is rotatably mounted at one end of the conveyor and connected to a driving source; A third gear is connected to one end of the rotating shaft and meshes with the second gear; Wherein, the second gear realizes synchronous rotation with the cleaning roller through the first synchronization component.

[0011] Preferably, it also includes: A driving wheel is connected to one end of the scraping strip, and a driving groove is formed on the outer wall of the driving wheel; A driving sleeve is sleeved on the outer wall of the driving wheel, the inner wall of the driving sleeve is connected with a driving column, and the driving column is embedded in the driving groove; The driving sleeve realizes synchronous rotation with the cleaning roller through the second synchronous component.

[0012] Preferably, it also includes: The input and output ends of the industrial computer are connected to the visual sensor and the driving source signal respectively; Among them, the visual sensor sends the defect coordinate signal of the seamless steel pipe to be inspected to the industrial computer. The industrial computer controls the driving source according to the defect coordinate signal, drives the fixed cylinder to rotate, makes the defect of the seamless steel pipe to be inspected face the indicating device, and then moves the pointer to the defect position.

[0013] In another aspect, the present invention provides a method for visually detecting surface defects in the production of seamless steel pipes, comprising the following steps: S1. Place the seamless steel pipe to be inspected on the conveyor, and then the conveyor transports the seamless steel pipe to be inspected to the bottom of the visual sensor; S2, the support block expands outward to hold the inner wall of the seamless steel pipe to be inspected, and then the fixed cylinder and the support block rotate, driving the seamless steel pipe to be inspected to rotate synchronously, so that every corner of the outer wall of the seamless steel pipe to be inspected can be inspected by the visual sensor; S3, the visual sensor sends the defect position coordinates of the seamless steel pipe to be detected to the processor; S4. The processor controls the driving source according to the defect position coordinates, so that the driving source drives the defect position of the seamless steel pipe to be detected toward the indicating device first, and then drives the pointer on the indicating device to align with the defect position, thereby completing the detection.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. By setting an indicating device on one side of the seamless steel pipe to be inspected, when the visual sensor detects the defects on the seamless steel pipe to be inspected, the coordinate information of the defect position can be collected and then sent to the indicating device. The pointer on the indicating device can point to the defect position of the seamless steel pipe to be inspected, which is convenient for the operator to observe.

[0015] 2. By expanding the support blocks outward, the ends of several support blocks are against the inner wall of the seamless steel pipe to be inspected, and then the support blocks are driven to rotate by the rotating shaft. Under the action of the friction between the support blocks and the inner wall of the seamless steel pipe to be inspected, the support blocks, the fixed cylinder and the seamless steel pipe to be inspected can rotate synchronously, thereby realizing the angle switching of the seamless steel pipe to be inspected, so that every corner of the outer wall of the seamless steel pipe to be inspected can be collected by the visual sensor, and because the support blocks are located inside the seamless steel pipe to be inspected, the outer wall of the seamless steel pipe to be inspected will not be blocked.

[0016] 3. Since the angle of the seamless steel pipe to be inspected is rotated by meshing the fourth gear on the rotating shaft with the rack on the support block to drive the support block to expand outward, after the support block is against the inner wall of the seamless steel pipe to be inspected, the continued rotation of the rotating shaft will not continue to drive the support block to expand outward, but will directly drive the fixed cylinder, the support block and the seamless steel pipe to be inspected to rotate as a whole. Therefore, the pressure applied by the support block on the side wall of the seamless steel pipe to be inspected is limited, and the extrusion pressure of the support block will not cause deformation of the side wall of the seamless steel pipe to be inspected.

[0017] 4. By arranging a cleaning roller and a scraping strip on the outer wall of the seamless steel pipe to be inspected, when the seamless steel pipe to be inspected rotates, the cleaning roller can produce vertical scraping on the outer wall of the seamless steel pipe to be inspected, and the scraping strip can produce horizontal scraping on the outer wall of the seamless steel pipe to be inspected, thereby removing the dust on the outer wall of the seamless steel pipe to be inspected, avoiding the dust from affecting the detection result, and the dust can enter the dust exhaust box through the dust collecting groove and the dust collecting cavity, and finally be discharged, thereby achieving the effect of dust removal.

[0018] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is an overall stereogram of the present invention; Figure 2 A three-dimensional diagram of the present invention without the light shield; Figure 3 It is a stereoscopic diagram of the first state of the conveyor, the seamless steel pipe to be inspected and the reversing assembly of the present invention; Figure 4 It is a stereoscopic diagram of the second state of the conveyor, the seamless steel pipe to be inspected and the reversing assembly of the present invention; Figure 5 It is a three-dimensional diagram of the third state of the conveyor, the seamless steel pipe to be inspected and the reversing assembly of the present invention; Figure 6 It is a left side view of the present invention; Figure 7 It is a right side view of the present invention; Figure 8 A three-dimensional diagram of an indicator assembly and a reversing assembly of the present invention; Fig. 9 A perspective view of the present invention without the conveyor; Fig.10 A three-dimensional diagram of the reversing assembly of the present invention; Fig.11 A partial cross-sectional view of a reversing assembly of the present invention; Fig.12 It is a three-dimensional exploded view of the support block and the rotating shaft of the present invention; Fig.13 An exploded view of the support block of the present invention; Fig.14 A perspective view of a cleaning roller and a scraping strip according to the present invention; Fig.15 An exploded view of the end of the scraping strip of the present invention; Fig.16 It is a partial structural schematic diagram of the scraping strip and the cleaning roller of the present invention; Fig.17 It is a cross-sectional view of the scraping strip of the present invention.

[0020] The reference numerals are as follows: 100. conveyor; 101. conveying roller; 200, visual sensor; 201, mounting beam; 202, mounting frame; 203, light shield; 300. Seamless steel pipe to be tested; 400, reversing assembly; 401, second motor; 402, first gear; 403, second gear; 404, fixed cylinder; 405, rotating seat; 406, rotating groove; 407, support block; 408, cleaning roller; 409, scraping strip; 410, third gear; 411, rotating shaft; 412, fourth gear; 413, rack; 414, avoidance groove; 415, bristles; 416, first transmission wheel; 417, second transmission wheel; 418, first transmission belt; 419, dust collecting groove; 421, slide bar; 422, driving wheel; 423, driving groove; 424, driving sleeve; 425, fixed sleeve; 426, rotating disk; 427, annular groove; 428, driving column; 429, third transmission wheel; 430, fourth transmission wheel; 431, second transmission belt; 432, dust collecting chamber; 433, dust exhaust box; 501, slide rail; 502, indicating device; 503, slider; 504, screw rod; 505, pointer; 506, first motor. DETAILED DESCRIPTION

[0021] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0022] Embodiment 1: Figure 1 , Figure 2 As shown, this embodiment provides a surface defect visual inspection device for seamless steel pipe production, which can visually inspect the defects on the surface of the seamless steel pipe 300 to be inspected and indicate the defect location, and it includes: The conveyor 100 is fixedly installed on the ground. The conveyor 100 is used to convey the seamless steel pipe 300 to be inspected to the bottom of the visual inspection station. The conveyor 100 is composed of a trough body and a conveying roller 101. There are a plurality of conveying rollers 101. The plurality of conveying rollers 101 are rotatably installed on the side wall of the trough body, and a driving source is provided at the ends of the plurality of conveying rollers 101. The driving source can drive the plurality of conveying rollers 101 to rotate in the same direction, so that when the seamless steel pipe 300 to be inspected is placed on the conveying roller 101, the seamless steel pipe 300 to be inspected can be conveyed in one direction; The visual sensor 200 is installed above the conveyor 100. There are several visual sensors 200, and the scanning range of the several visual sensors 200 can fully cover the top projection of the seamless steel pipe 300 to be detected, so as to ensure that each position of the seamless steel pipe 300 to be detected can be scanned, and the accuracy of the detection result is ensured. A mounting beam 201 is arranged on the top of the visual sensor 200. The visual sensor 200 is fixedly installed with the mounting beam 201 by bolts. A mounting frame 202 is arranged on the top of the mounting beam 201. The bottom of the mounting frame 202 is relatively fixed to the conveyor 100. The mounting beam 201 and the mounting frame 202 are fixedly installed by bolts. A light shield 203 is installed on the inner wall of the mounting frame 202. The light shield 203 is used to isolate external light, so as to ensure that the visual sensor 200 can work normally. It should be noted that the visual sensor 200 is a device that uses a photoelectric sensor device to obtain an image of an object. It can convert the image of the object into a digital signal and can process and analyze the image. The visual sensor 200 is mainly composed of a light source, a lens, an image sensor, an analog / digital converter, an image processor, an image memory, etc., and sometimes it is also equipped with a light projector and other auxiliary equipment; The working process of the visual sensor 200 can be divided into four steps: image detection, image analysis, image drawing and image recognition; first, the image information in the external environment is captured through the lens; then, the image sensor converts the captured optical signal into an electrical signal; then, the analog / digital converter converts the electrical signal into a digital signal for subsequent digital image processing; finally, the image processor performs various processing and analysis on the digital image, such as grayscale, edge detection, contour coordinate reconstruction, etc., to extract useful information; There are many types of visual sensors 200, which can be divided into different categories according to different classification standards; for example, according to the dimension, they can be divided into two-dimensional visual sensors 200 and three-dimensional visual sensors 200; the two-dimensional visual sensor 200 mainly captures planar image information, while the three-dimensional visual sensor 200 can capture three-dimensional information of an object; in addition, there are types such as intelligent visual sensors 200, which integrate image sensors, digital processors, communication modules and other peripherals into a single camera, and have multiple functions such as image acquisition, image processing and information transmission; The performance indicators of the visual sensor 200 mainly include resolution, accuracy, frame rate, etc. Resolution determines the degree of image detail that the sensor can capture, usually expressed in the number of pixels; accuracy reflects the accuracy of sensor measurement and recognition; frame rate determines the speed at which the sensor can capture images, that is, the number of images that can be processed per second; The reversing assembly 400 is installed at one end of the conveyor 100, and the reversing assembly 400 is used to rotate the seamless steel pipe 300 to be inspected, so that the surface of the seamless steel pipe 300 to be inspected can be scanned by the visual sensor 200 in sequence; like Figure 3 , Figure 4 , Figure 5 As shown, during the process of testing the seamless steel pipe 300 to be tested, the seamless steel pipe 300 to be tested is placed on a plurality of conveying rollers 101; like Figure 6 , Figure 7 As shown, when the seamless steel pipe 300 to be inspected is inspected, the rotation angle of the seamless steel pipe 300 to be inspected can be adjusted through the reversing component 400, so that each position of the outer wall of the seamless steel pipe 300 to be inspected can be scanned by the visual sensor 200.

[0023] like Figure 8 , Fig. 9 As shown, an indication component is also provided on one side of the conveyor 100, and the indication component can indicate the defect position of the seamless steel pipe 300 to be inspected according to the feedback of the primary reversing component 400 of the visual sensor 200, and the indication component includes: A slide rail 501, the slide rail 501 is fixedly connected to one end of the conveyor 100; Indicator 502, the indicator 502 is composed of a base and a pointer 505; A slider 503, the slider 503 is slidably connected to the slide rail 501; A screw rod 504, two ends of the screw rod 504 are rotatably connected to two ends of the slide rail 501, and the screw rod 504 is threadedly connected to the middle part of the slide block 503; The first motor 506 is fixedly mounted on one end of the slide rail 501, and the output shaft of the first motor 506 is fixedly connected to one end of the screw rod 504; like Figure 8 As shown, a control panel 600 is fixedly installed at one end of the conveyor 100, and the control panel 600 integrates an industrial computer, a display screen and control buttons.

[0024] like Fig.10 , Fig.11 As shown, the reversing assembly 400 includes a supporting assembly and a cleaning assembly. The supporting assembly is used to clamp the seamless steel pipe 300 to be detected and drive the seamless steel pipe 300 to be detected to rotate. The cleaning assembly is used to clean the surface of the seamless steel pipe 300 to be detected, so that the surface defects of the seamless steel pipe 300 to be detected can be revealed, which is convenient for the visual sensor 200 to identify and ensure the accuracy of the detection result. The supporting assembly and the cleaning assembly are specifically described below: like Fig.10 As shown, the support assembly includes: The second motor 401 is fixedly mounted at one end of the conveyor 100; The first gear 402 is fixedly mounted on the output shaft of the second motor 401; A second gear 403 is rotatably mounted on one end of the conveyor 100, and the second gear 403 is meshed with the first gear 402; The fixed cylinder 404 is located above the conveyor 100 and corresponds to the position of one end of the seamless steel pipe 300 to be inspected. When the seamless steel pipe 300 to be inspected is conveyed to one end of the conveyor 100, the fixed cylinder 404 can be just located in the seamless steel pipe 300 to be inspected; There are at least two rotating seats 405, which are fixedly connected to the top of the conveyor 100. The outer wall of the fixed cylinder 404 is provided with at least two rotating grooves 406, and the rotating grooves 406 are rotatably connected to the rotating seats 405; The support blocks 407 are movably mounted on the side walls of the fixed cylinder 404. The support blocks 407 are distributed in the axial direction of the fixed cylinder 404 in groups of three. The three support blocks 407 in each group are symmetrically arranged in the radial direction of the fixed cylinder 404. When each support block 407 expands outward, it can support the inner wall of the seamless steel pipe 300 to be inspected. At this time, when the fixed cylinder 404 rotates, it can drive the seamless steel pipe 300 to be inspected to rotate synchronously.

[0025] like Fig.14 As shown, the cleaning assembly includes: The cleaning roller 408 is closely attached to the outer wall of the seamless steel pipe 300 to be inspected. The cleaning roller 408 can rotate under the drive of the driving source to vertically scrape the outer wall of the seamless steel pipe 300 to be inspected. The scraping strip 409 is closely attached to the outer wall of the seamless steel pipe 300 to be inspected. Driven by a driving source, the scraping strip 409 can reciprocate along the central axis direction of the seamless steel pipe 300 to be inspected, and scrape the outer wall of the seamless steel pipe 300 to be inspected transversely.

[0026] like Fig.11 , Fig.12 , Fig.13 As shown, the support assembly also includes: The third gear 410 is disposed above the second gear 403, and the third gear 410 is meshed with the second gear 403; A rotating shaft 411, one end of which is fixedly connected to the third gear 410, and the rotating shaft 411 is rotatably mounted inside the fixed cylinder 404, and a cavity is opened at one end of the fixed cylinder 404, and the rotating shaft 411 extends into the cavity, and one end of the support block 407 extends into the cavity; A fourth gear 412 connected to the outer wall of the rotating shaft 411 located in the cavity; The rack 413 is fixedly connected to one end of the support block 407 located inside the cavity. The rack 413 is meshed with the fourth gear 412. When the fourth gear 412 rotates with the rotating shaft 411, it can drive the rack 413 to move. Fig.13 As shown, in order to avoid motion interference caused by the movement of several racks 413, avoidance grooves 414 are provided in the three support blocks 407 in the same group, and the racks 413 on the three support blocks 407 in the same group are staggered, thereby ensuring that the three support blocks 407 can expand or contract synchronously.

[0027] like Fig.14 As shown, the cleaning component also includes: Bristles 415 are connected to the outer wall of the cleaning roller 408, and the bristles 415 are staggered and distributed on the outer wall of the cleaning roller 408. Both ends of the cleaning roller 408 are rotatably mounted on the top of the conveyor 100; A first transmission wheel 416 is fixedly connected to one end of the cleaning roller 408; The second transmission wheel 417 is fixedly connected to the middle part of the second gear 403. The second transmission wheel 417 and the first transmission wheel 416 are connected to each other through a first transmission belt 418. The first transmission wheel 416 and the second transmission wheel 417 can be sprocket wheels or belt pulleys, and the first transmission belt 418 can be a chain or a belt. like Fig.15 , Fig.16 , Fig.17 As shown, the cleaning component also includes: The dust collecting groove 419 is provided at one end of the scraping strip 409 close to the seamless steel pipe 300 to be detected. The shape of the outer wall of the scraping strip 409 matches the shape of the seamless steel pipe 300 to be detected, specifically, it is an arc shape. The bottom end of the dust collecting groove 419 is closed. The chute 420 is provided at one end of the scraping strip 409 away from the seamless steel pipe 300 to be inspected. The conveyor 100 is provided with a slide bar matching the chute 420. The chute 420 is slidably connected with the slide bar. Driven by a driving source, the scraping strip 409 can slide back and forth along the slide bar. The slide bar 421 is fixedly connected to both ends of the scraping strip 409, and the slide bar 421 is slidably connected to the side wall of the conveyor 100; The driving wheel 422 is fixed to the end of one of the sliding rods 421. The outer wall of the driving wheel 422 is provided with a driving groove 423. The driving groove 423 surrounds the driving wheel 422 in a full circle and is S-shaped. A driving sleeve 424 is sleeved on the outer wall of the driving wheel 422. The inner wall of the driving sleeve 424 is connected with a driving column 428, and the driving column 428 is embedded in the driving groove 423; A fixing sleeve 425, an inner wall of which is provided with an annular groove 427, one end of the driving sleeve 424 is connected with a rotating disk 426, the rotating disk 426 is rotatably connected to the inner wall of the annular groove 427, and the fixing sleeve 425 is fixedly connected to the side wall of the conveyor 100; A third transmission wheel 429, fixedly connected to one end of the cleaning roller 408; The fourth transmission wheel 430 is fixedly connected to one end of the driving sleeve 424. The third transmission wheel 429 and the fourth transmission wheel 430 are connected to each other through a second transmission belt 431. The third transmission wheel 429 and the fourth transmission wheel 430 can be sprockets or pulleys, and the second transmission belt 431 can be a chain or a belt. A dust collecting chamber 432 is provided inside the scraping strip 409, and one end of the dust collecting chamber 432 is connected to one end of the dust collecting groove 419; The dust exhaust box 433 is fixedly connected to the outer wall of the scraping strip 409 , and one end of the dust exhaust box 433 is communicated with the dust collecting chamber 432 .

[0028] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that this embodiment provides a surface defect visual inspection method for seamless steel pipe production, comprising the following steps: S1, placing the seamless steel pipe 300 to be inspected on the conveyor 100, and then the conveyor 100 conveys the seamless steel pipe 300 to be inspected to the bottom of the visual sensor 200; S2, the support block 407 expands outward to hold the inner wall of the seamless steel pipe 300 to be inspected, and then the fixed cylinder 404 and the support block 407 rotate, driving the seamless steel pipe 300 to be inspected to rotate synchronously, so that each corner of the outer wall of the seamless steel pipe 300 to be inspected can be inspected by the visual sensor 200; S3, the visual sensor 200 sends the defect position coordinates of the seamless steel pipe 300 to be detected to the processor; S4. The processor controls the driving source according to the defect position coordinates, so that the driving source drives the defect position of the seamless steel pipe 300 to be detected toward the indicating device 502 first, and then drives the pointer 505 on the indicating device 502 to align with the defect position, thereby completing the detection.

[0029] In summary, the present invention sets an indicating device 502 on one side of the seamless steel pipe 300 to be inspected, so that when the visual sensor 200 detects the defect on the seamless steel pipe 300 to be inspected, the coordinate information of the defect position can be collected and then sent to the indicating device 502, and the pointer 505 on the indicating device 502 can point to the defect position of the seamless steel pipe 300 to be inspected, so as to facilitate the observation of the operator; by expanding the support block 407 outward, so that the ends of several support blocks 407 are against the inner wall of the seamless steel pipe 300 to be inspected, and then by rotating The shaft 411 drives the support block 407 to rotate. Under the effect of the friction between the support block 407 and the inner wall of the seamless steel pipe 300 to be detected, the support block 407, the fixed cylinder 404 and the seamless steel pipe 300 to be detected can rotate synchronously, thereby realizing the angle switching of the seamless steel pipe 300 to be detected, so that every corner of the outer wall of the seamless steel pipe 300 to be detected can be collected by the visual sensor 200, and because the support block 407 is located inside the seamless steel pipe 300 to be detected, it will not block the outer wall of the seamless steel pipe 300 to be detected; due to the angle rotation of the seamless steel pipe 300 to be detected The fourth gear 412 on the rotating shaft 411 is meshed with the rack 413 on the support block 407 to drive the support block 407 to expand outward. Therefore, after the support block 407 contacts the inner wall of the seamless steel pipe 300 to be tested, the rotating shaft 411 continues to rotate and will not continue to drive the support block 407 to expand outward, but directly drives the fixed cylinder 404, the support block 407 and the seamless steel pipe 300 to be tested to rotate as a whole. Therefore, the pressure applied by the support block 407 on the side wall of the seamless steel pipe 300 to be tested is limited, and the extrusion force of the support block 407 will not cause deformation of the side wall of the seamless steel pipe 300 to be tested. shape; by arranging a cleaning roller 408 and a scraping strip 409 on the outer wall of the seamless steel pipe 300 to be inspected, when the seamless steel pipe 300 to be inspected rotates, the cleaning roller 408 can produce vertical scraping on the outer wall of the seamless steel pipe 300 to be inspected, and the scraping strip 409 can produce horizontal scraping on the outer wall of the seamless steel pipe 300 to be inspected, thereby removing dust on the outer wall of the seamless steel pipe 300 to be inspected, avoiding the dust from affecting the inspection result, and the dust can enter the dust exhaust box 433 through the dust collecting groove 419 and the dust collecting cavity 432, and finally be discharged, thereby achieving the effect of dust removal.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Parallel: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, which allows for non-absolute parallelism due to factors such as assembly tolerance, design tolerance, and the influence of structural flatness. Small angular errors are allowed. For example, an assembly error range of less than 10 degrees can be understood as a parallel relationship.

[0033] Vertical: The verticality defined in this application is not limited to an absolute vertical intersection relationship (angle of 90 degrees). It allows for non-absolute vertical intersection relationships caused by factors such as assembly tolerance, design tolerance, and influence of structural flatness. It also allows for errors in a small angle range. For example, the assembly error range of 80 to 100 degrees can be understood as a vertical relationship.

[0034] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is just a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0035] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0036] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A surface defect visual inspection device for seamless steel pipe production, comprising a conveyor (100) and a visual sensor (200), wherein the visual sensor (200) is used to scan the seamless steel pipe (300) to be inspected to perform an inspection function, and is characterized in that: Also includes: The indicating device (502) is slidably mounted on the conveyor (100) and moves axially along the seamless steel pipe (300) to be inspected under the drive of a driving source; A fixed cylinder (405) is rotatably mounted on one end of the conveyor (100) and is used to drive the seamless steel pipe (300) to be inspected to rotate; There are a plurality of support blocks (407) distributed around the fixed cylinder (404); driven by a driving source, the plurality of support blocks (407) can expand or contract to support the seamless steel pipe (300) to be inspected; After the visual sensor (200) detects the defect position of the seamless steel pipe (300) to be inspected, the pointer (505) on the indicating device (502) points to the defect position of the seamless steel pipe (300) to be inspected.

2. A surface defect visual inspection device for seamless steel pipe production as claimed in claim 1, characterized in that: It also includes a cleaning roller (408), which rotates under the drive of a driving source to vertically scrape the outer wall of the seamless steel pipe (300) to be inspected.

3. A surface defect visual inspection device for seamless steel pipe production as claimed in claim 2, characterized in that: Also includes: The scraping strip (409) is driven by a driving source to move along the axial direction of the seamless steel pipe (300) to be inspected, and scrapes the outer wall of the seamless steel pipe (300) to be inspected in a transverse direction.

4. A surface defect visual inspection device for seamless steel pipe production as claimed in claim 3, characterized in that: Also includes: A dust collecting groove (419) is provided at one end of the scraping strip (409) close to the seamless steel pipe (300) to be inspected, and is used to collect the scraped dust; A dust collecting chamber (432) is provided inside the scraping strip (409) and is in communication with the dust collecting groove (419); The dust exhaust box (433) is connected to the outer wall of the scraping strip (409) and communicates with the dust collecting chamber (432) and is used to exhaust the dust in the dust collecting groove (419).

5. A surface defect visual inspection device for seamless steel pipe production as claimed in claim 2, characterized in that: Also includes: A rotating shaft (411) is rotatably mounted inside the fixed cylinder (404); A fourth gear (412) connected to one end of the rotating shaft (411); A rack (413) connected to one end of the support block (407) and meshing with the fourth gear (412); When the rotating shaft (411) rotates toward one side, the fourth gear (412) can drive the rack (413) and the support block (407) to move, and when the end of the support block (407) abuts against the inner wall of the seamless steel pipe (300) to be tested, the fixed cylinder (404), the seamless steel pipe (300) to be tested and the support block (407) rotate synchronously.

6. A surface defect visual inspection device for seamless steel pipe production as claimed in claim 1, characterized in that: The visual sensors (200) are in plurality, and the plurality of visual sensors (200) are fixed via a mounting beam (201) and a mounting frame (202).

7. A surface defect visual inspection device for seamless steel pipe production as claimed in claim 5, characterized in that: Also includes: A second gear (403) is rotatably mounted on one end of the conveyor (100) and is connected to a driving source; A third gear (410) is connected to one end of the rotating shaft (411) and meshes with the second gear (403); The second gear (403) rotates synchronously with the cleaning roller (408) via the first synchronization component.

8. A surface defect visual inspection device for seamless steel pipe production as claimed in claim 3, characterized in that: Also includes: A driving wheel (422) is connected to one end of the scraping strip (409), and a driving groove (423) is formed on an outer wall of the driving wheel (422); A driving sleeve (424) is sleeved on the outer wall of the driving wheel (422); the inner wall of the driving sleeve (424) is connected to a driving column (428); and the driving column (428) is embedded in the driving groove (423); The driving sleeve (424) achieves synchronous rotation with the cleaning roller (408) via the second synchronous component.

9. A surface defect visual inspection device for seamless steel pipe production as claimed in claim 1, characterized in that: Also includes: An industrial computer, the input end and the output end of which are respectively connected to the visual sensor (200) and the driving source signal; The visual sensor (200) sends a defect coordinate signal of the seamless steel pipe (300) to be inspected to the industrial computer. The industrial computer controls the driving source according to the defect coordinate signal to drive the fixed cylinder (404) to rotate, so that the defect of the seamless steel pipe (300) to be inspected is directed toward the indicating device (502), and then moves the pointer (505) to the defect position.

10. A method for visually inspecting surface defects in the production of seamless steel pipes, using a device for visually inspecting surface defects in the production of seamless steel pipes as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. placing the seamless steel pipe (300) to be inspected on the conveyor (100), and then the conveyor (100) transports the seamless steel pipe (300) to the bottom of the visual sensor (200); S2, the support block (407) expands outward to press against the inner wall of the seamless steel pipe (300) to be inspected, and then the fixed cylinder (405) and the support block (407) rotate, driving the seamless steel pipe (300) to be inspected to rotate synchronously, so that each corner of the outer wall of the seamless steel pipe (300) to be inspected can be inspected by the visual sensor (200); S3, the visual sensor (200) sends the defect position coordinates of the seamless steel pipe (300) to be detected to the processor; S4. The processor controls the driving source according to the defect position coordinates, so that the driving source drives the defect position of the seamless steel pipe (300) to be detected to first face the indicating device (502), and then drives the pointer (505) on the indicating device (502) to align with the defect position, thereby completing the detection.

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