Rapid positioning device for steel plate surface defect detection
By combining a primary sliding screw and a secondary sliding screw in a dual-screw drive mode, the problem of shaking and offset of the detection components in existing detection devices is solved, achieving efficient and accurate detection of steel plate surface defects and reducing the risk of misjudgment and missed detection.
Patent Information
- Application Number
- CN202520029812.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-07
AI Technical Summary
In existing steel plate surface defect detection devices, the sliding rod movement and positioning result in insufficient accuracy and smoothness of the detection components. Slight shaking and offset affect high-precision detection and are prone to misjudgment or missed detection of defects.
It adopts a dual-screw drive mode that combines a primary sliding screw and a secondary sliding screw. The primary screw is responsible for large-range rapid movement, while the secondary screw is responsible for fine scanning and positioning in the vertical direction, working in conjunction with a laser scanner for comprehensive defect detection.
It improves the flexibility and accuracy of inspection, and can be moved stably and accurately to any position on the steel plate surface, greatly reducing the risk of misjudgment or omission of defects. In particular, it can capture subtle defects and provide reliable quality assessment basis.
Smart Images
Figure CN223756632U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to detection device field especially relates to fast positioning device for steel sheet surface defect detection. BACKGROUND
[0002] The fast positioning device for steel sheet surface defect detection is a professional equipment specially used in the fields of steel production, processing and quality detection, aiming at efficiently and accurately determining the positions of various defects possibly existing on the surface of steel sheet.
[0003] Most of the existing steel sheet surface defect detection devices adopt sliding rod movement positioning, which results in poor precision and smoothness when driving the detection component to move along the surface of steel sheet.
[0004] Therefore, in view of the above-mentioned problems of the existing steel sheet surface defect detection devices, i.e., the sliding rod movement positioning, the driving of the detection component to move along the surface of steel sheet, the insufficient precision and smoothness, the slight shaking and deviation of the detection component during movement, the magnification of the slight positioning deviation under high-precision detection, and the easy occurrence of defect misjudgment or omission, a fast positioning device for steel sheet surface defect detection is designed. SUMMARY
[0005] In order to overcome the above-mentioned problems of the existing steel sheet surface defect detection devices, i.e., the sliding rod movement positioning, the driving of the detection component to move along the surface of steel sheet, the insufficient precision and smoothness, the slight shaking and deviation of the detection component during movement, the magnification of the slight positioning deviation under high-precision detection, and the easy occurrence of defect misjudgment or omission.
[0006] The utility model discloses a technical scheme for a rapid positioning device for steel plate surface defect detection, comprising a steel plate placement table, a rapid positioning table, a feeding and withdrawing table and a detection assembly.
[0007] Preferably, when detecting the surface defects of the steel plate, first, place the steel plate to be detected on the steel plate placement table, then operate the feeding and withdrawing table to push the steel plate up, so that the operator can conveniently place and take out the steel plate, start the second lead screw motor, the output end of the second lead screw motor drives the second sliding lead screw to rotate, the detection assembly installed on the rapid positioning table moves along the rapid positioning table under the action of the second sliding lead screw, the auxiliary observation table slides relative to the rapid positioning table through the auxiliary sliding groove, the movement and positioning of the auxiliary detection assembly are assisted, and the detection assembly moves on the rapid positioning table to comprehensively detect the surface of the steel plate.
[0008] Preferably, one end of the second sliding lead screw is provided with a limiting block located inside the rapid positioning table, one side of the steel plate placement table is provided with a lead screw mounting table, a first sliding lead screw is installed inside the lead screw mounting table, a first lead screw motor is installed on one side of the lead screw mounting table, the output end of the first lead screw motor is connected with the first sliding lead screw, and a protective plate is installed on the side of the lead screw mounting table away from the steel plate placement table.
[0009] Preferably, the steel plate placement table is concave, support columns are installed at the corners around the bottom end of the steel plate placement table, and fixed plates are installed at the bottom ends of the support columns.
[0010] Preferably, a through sliding groove is formed through one side of the steel plate placement table, a limiting frame is detachably installed on the top end of the steel plate placement table, and two groups of support bottom plates are symmetrically installed inside the limiting frame.
[0011] Preferably, a clamping table is installed on the side edge of the steel plate placement table, a control table is fixedly installed on the top end of the clamping table, and a lifting groove is symmetrically formed through the top end of the steel plate placement table.
[0012] Preferably, the feeding and withdrawing table is provided with two groups of symmetrically arranged feeding and withdrawing tables, two groups of hydraulic rods are symmetrically installed on the top end of each feeding and withdrawing table, a push plate is installed on the piston end of each hydraulic rod, and a hydraulic cylinder is installed at the center of one side of each feeding and withdrawing table.
[0013] As preferred, the detection assembly comprises a first sliding block and a second sliding block, the second sliding screw rod and the first sliding screw rod are respectively connected with the second sliding block and the first sliding block, the first sliding block and the second sliding block are respectively provided with a laser scanner, and the first sliding block and the second sliding block are respectively provided with a sliding hole near the edge.
[0014] The beneficial effects of the utility model are as follows: the device adopts a double-screw rod driving mode combining a first sliding screw rod and a second sliding screw rod, a screw rod mounting table is arranged on one side of the steel plate placing table, the first sliding screw rod is arranged in the screw rod mounting table and driven by a first screw rod motor, the second sliding screw rod is arranged on the inner side of the fast positioning table and driven by a second screw rod motor, the first screw rod is mainly responsible for the large-range fast movement of the detection assembly in the length direction of the steel plate, the second screw rod is mainly responsible for the fine scanning and positioning of the suspected defect area in the vertical direction, and the two are matched with each other, so that the detection assembly can flexibly and accurately reach any position on the surface of the steel plate, for example, when a large-area steel plate is detected, the first screw rod can quickly move the detection assembly to the approximate area where the defect may exist, and then the second screw rod drives the detection assembly to conduct detailed investigation, which is like using a large net to catch fish and then using a small net to catch small fish, greatly improving the detection efficiency, the double-screw rod driving system is combined with the optimized sliding block and screw rod matching design, fundamentally solving the shaking and deviation problems of the traditional sliding rod positioning, under the high-precision detection requirement, the detection assembly can stably and accurately move to the target position, and small defects can be accurately captured, greatly reducing the risk of defect misjudgment or omission, for example, for some fine surface cracks, the traditional device may miss the positioning, but the device can clearly present the fine positioning, providing a reliable basis for the steel plate quality evaluation. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 The whole structure schematic diagram of the fast positioning device for steel plate surface defect detection is shown;
[0016] Fig. 2 The feeding and withdrawing table structure schematic diagram of the fast positioning device for steel plate surface defect detection is shown;
[0017] Fig. 3 The steel plate placing table explosion structure schematic diagram of the fast positioning device for steel plate surface defect detection is shown;
[0018] Fig. 4 The whole explosion structure schematic diagram of the fast positioning device for steel plate surface defect detection is shown.
[0019] Explanation of reference signs: 1, steel plate placing table; 2, quick positioning table; 3, feeding and withdrawing table; 101, supporting column; 102, fixed plate; 103, limiting frame; 104, supporting bottom plate; 105, through sliding groove; 106, clamping table; 107, control table; 108, lifting groove; 201, auxiliary observation table; 202, auxiliary sliding groove; 203, protective plate; 204, screw rod mounting table; 205, secondary screw rod motor; 206, secondary sliding screw rod; 207, primary sliding screw rod; 208, primary screw rod motor; 301, hydraulic cylinder; 302, hydraulic rod; 303, push plate; 401, primary sliding block; 402, secondary sliding block; 403, sliding hole; 404, laser scanner. DETAILED DESCRIPTION
[0020] The utility model is further explained in connection with the drawings and examples.
[0021] Please refer to Figs. 1-4 The utility model provides a kind of embodiment: steel plate surface defect detection is with quick positioning device, including steel plate placing table 1, quick positioning table 2, feeding and withdrawing table 3 and detection assembly;Steel plate placing table 1 top end both sides are equipped with the quick positioning table 2 for letting detection assembly quickly move, steel plate placing table 1 bottom end is equipped with the feeding and withdrawing table 3 for pushing detection steel plate high to facilitate placing and taking out steel plate, quick positioning table 2 is equipped with the detection assembly for detecting steel plate defect, quick positioning table 2 is correspondingly provided with auxiliary observation table 201, quick positioning table 2 inner side uppermost is equipped with secondary sliding screw rod 206, quick positioning table 2 one side is equipped with secondary screw rod motor 205, and the output end of secondary screw rod motor 205 is connected with secondary sliding screw rod 206, auxiliary observation table 201 and quick positioning table 2 corresponding place are equipped with auxiliary sliding groove 202, when carrying out steel plate surface defect detection, first, the steel plate to be detected is placed on steel plate placing table 1, feeding and withdrawing table 3 works, and detection steel plate is pushed high to facilitate operator conveniently placing and taking out steel plate, starts secondary screw rod motor 205, and its output end drives secondary sliding screw rod 206 to rotate, and the detection assembly mounted on quick positioning table 2 is moved along quick positioning table 2 under the action of secondary sliding screw rod 206, auxiliary observation table 201 is slid relative to quick positioning table 2 by auxiliary sliding groove 202, and the movement and positioning of auxiliary detection assembly, the detection assembly is moved on quick positioning table 2, and the surface of steel plate is comprehensively detected during the movement.
[0022] Please refer to Figs. 1-4In the embodiment, the secondary sliding lead screw 206 is provided with a limiting block inside the rapid positioning table 2, the steel plate placing table 1 is provided with a lead screw mounting table 204 on one side, the lead screw mounting table 204 is internally provided with a primary sliding lead screw 207, the lead screw mounting table 204 is provided with a primary lead screw motor 208 on one side, the output end of the primary lead screw motor 208 is connected with the primary sliding lead screw 207, the lead screw mounting table 204 is provided with a protective plate 203 away from the steel plate placing table 1, the primary sliding lead screw 207 can provide more accurate horizontal position adjustment under the drive of the primary lead screw motor 208, improve the positioning accuracy of the detection assembly on the surface of the steel plate, so as to more accurately detect the defect position, the lead screw mounting table 204 provides a stable mounting basis for the primary sliding lead screw 207, ensures that the lead screw remains stable during operation, reduces shaking and deviation, and is beneficial to improve the accuracy and stability of detection, the protective plate 203 can protect the primary sliding lead screw 207 and the primary lead screw motor 208 from external collision and interference of dust and sundries, prolongs the service life, ensures long-term stable operation of the device, the steel plate placing table 1 is concave, the steel plate placing table 1 is provided with support columns 101 at the corners around the bottom end, the support columns 101 at the corners around the bottom end are provided with fixed plates 102 at the bottom end, the support columns 101 at the corners around the bottom end of the steel plate placing table 1 can evenly share the weight of the steel plate, ensures that the placing table remains stable during operation, does not shake or tilt, provides a stable basis for the placement and detection of the steel plate, the distribution of the four support columns 101 makes the stress more balanced, effectively prevents deformation or damage of the placing table caused by uneven stress, and prolongs the service life of the equipment.
[0023] Please refer to Figs. 2-4 In the embodiment, the steel plate placing table 1 is provided with a through sliding groove 105 on one side, the steel plate placing table 1 is provided with a limiting frame 103 on the top end, the limiting frame 103 is provided with two groups of support bottom plates 104 symmetrically on the inner side, the limiting frame 103 can limit the position of the steel plate placed on the steel plate placing table 1, ensures that the steel plate does not displace during detection, thereby improving the accuracy and repeatability of detection, the two groups of support bottom plates 104 symmetrically provided on the inner side of the limiting frame 103 can provide uniform support for the steel plate, avoid deformation of the steel plate caused by uneven local stress, and ensure the accuracy of the detection result, the steel plate placing table 1 is provided with a clamping table 106 near the edge on the outside, the clamping table 106 is provided with a control table 107 fixedly installed on the top end, the steel plate placing table 1 is provided with a lifting groove 108 symmetrically through on the top end, the control table 107 fixedly installed on the top end of the clamping table 106 facilitates operators to centrally control the operating parameters and operation process of the entire detection device, improves the convenience and efficiency of operation, the lifting groove 108 symmetrically through on the top end of the steel plate placing table 1 provides a space for installation and operation of related lifting components, which is beneficial to realize lifting adjustment of the steel plate to adapt to different detection requirements.
[0024] Please refer to Figs. 2-4 In the embodiment, the feeding and withdrawing material table 3 is provided with two groups of symmetrical arrangements, the top end of the feeding and withdrawing material table 3 is symmetrically provided with two groups of hydraulic rods 302, the piston end of the two groups of hydraulic rods 302 is provided with a push plate 303, the center of one side of the feeding and withdrawing material table 3 is provided with a hydraulic cylinder 301, the push plate 303 at the top end of the hydraulic rod 302 can provide uniform and stable thrust, ensure the smooth movement of the steel plate during pushing, avoid the inclination or deviation of the steel plate due to uneven stress, the two groups of symmetrical feeding and withdrawing material tables 3 can work simultaneously, improve the efficiency of the steel plate feeding and discharging, save the operation time, the detection assembly includes a first sliding block 401 and a second sliding block 402, the outer side of the second sliding lead screw 206 and the first sliding lead screw 207 is respectively transmissionally connected with the second sliding block 402 and the first sliding block 401, the first sliding block 401 and the second sliding block 402 is provided with a laser scanner 404 at the corresponding position, the first sliding block 401 and the second sliding block 402 is provided with a sliding hole 403 at the side near the edge, the setting of the first sliding block 401 and the second sliding block 402 makes the laser scanner 404 can move detection at different positions, so as to cover a larger area of the steel plate, realize more comprehensive defect detection, reduce the detection dead angle, the laser scanner 404 can provide high-precision detection, accurately identify the subtle defects on the surface of the steel plate, improve the accuracy and reliability of the detection.
[0025] In the process of working, the operator carries the steel plate to be detected to the vicinity of the steel plate placing table 1. Since the steel plate placing table 1 is concave and the corners around are stably supported by the supporting columns 101, the steel plate is conveniently preliminarily positioned. If the steel plate is large, it can be positioned with the aid of the limiting frame 103. The supporting bottom plate 104 inside the limiting frame 103 can prevent the steel plate from directly contacting the steel plate placing table 1 and causing scratching, so as to ensure that the steel plate is in the appropriate detection area. The hydraulic cylinder 301 of the feeding and withdrawing table 3 is started, the hydraulic cylinder 301 pushes the hydraulic rod 302 to extend upward, the push plates 303 at the top ends of the two groups of symmetrically arranged hydraulic rods 302 synchronously rise, the steel plate placed below the steel plate placing table 1 is stably lifted, the steel plate gradually approaches the upper surface of the steel plate placing table 1, until the steel plate is slightly higher than the steel plate placing table 1, so as to conveniently accurately place the steel plate later. The operator controls the control console 107 on the clamping table 106 to control the operation of the primary lead screw motor 208. The primary lead screw motor 208 drives the primary sliding lead screw 207 to rotate. The primary sliding lead screw 207 installed on the lead screw mounting table 204 drives the primary sliding block 401 cooperating therewith to move. The primary sliding block 401 moves to the appropriate position through the sliding hole 403 and the primary sliding lead screw 207. According to the information fed back by the laser scanner 404, the operator finely adjusts the position of the steel plate, so as to ensure that the steel plate is accurately placed at the predetermined detection starting position on the steel plate placing table 1. Then the hydraulic rod 302 is controlled to descend, the steel plate falls on the steel plate placing table 1, and the primary lead screw motor 208 is started again to drive the primary sliding block 401 to quickly move along the length direction of the steel plate, so as to preliminarily scan the surface of the steel plate in a large range, and quickly position the approximate area where the defects may exist. In the process, the moving speed of the primary sliding block 401 is relatively fast, so as to quickly screen the surface of the steel plate in a large range. When the primary sliding block 401 moves to the vicinity of the suspected defect area, the secondary lead screw motor 205 is started, the secondary lead screw motor 205 drives the secondary sliding lead screw 206 to rotate, and the secondary sliding lead screw 206 drives the secondary sliding block 402 to move along the direction perpendicular to the moving direction of the primary sliding block 401 with the aid of the auxiliary sliding groove 202, so as to finely scan the area preliminarily positioned in the longitudinal direction. The laser scanner 404 on the secondary sliding block 402 focuses on a small range area, so as to detect the subtle defects on the surface of the steel plate with higher accuracy. In the whole detection process, the laser scanner 404 converts the detected optical signals into electrical signals in real time, and transmits the electrical signals to the matched data processing system. The data processing system analyzes and processes the signals to judge the type, size and position of the defects and the like. While the detection assembly is working, the operator can stand beside the auxiliary observation table 201 to directly observe the surface of the steel plate and the working condition of the detection assembly through the auxiliary sliding groove 202. If it is found that there are sundries on the surface of the steel plate affecting the detection, the detection assembly is stuck or other abnormal conditions, the operator can take measures in time, such as pausing the detection, cleaning the sundries and then continuing, and the like. After the detection is completed, the hydraulic cylinder 301 of the feeding and withdrawing table 3 is started again,The hydraulic rod 302 and the push plate 303 lift the steel plate from the steel plate placing table 1 to a certain distance from the surface of the steel plate placing table 1, facilitating the taking out.
[0026] Through the above steps, when the steel plate surface defect detection is performed, first, the steel plate to be detected is placed on the steel plate placing table 1, the feeding table 3 works, and the detection steel plate is pushed up, so that the operator can conveniently place and take out the steel plate. The secondary lead screw motor 205 is started, the output end drives the secondary sliding lead screw 206 to rotate, the detection assembly installed on the rapid positioning table 2 moves along the rapid positioning table 2 under the action of the secondary sliding lead screw 206, the auxiliary observation table 201 slides relative to the rapid positioning table 2 through the auxiliary sliding groove 202, and the movement and positioning of the auxiliary detection assembly are assisted. The detection assembly moves on the rapid positioning table 2, and the surface of the steel plate is comprehensively detected during the movement.
Claims
1. A rapid positioning device for detecting surface defects of a steel plate, comprising a steel plate placing table (1); characterized in that: It also includes the quick positioning table (2), the feeding and withdrawing table (3) and the detection assembly; the steel plate placing table (1) is provided with the quick positioning table (2) for moving the detection assembly on both sides of the top end, the steel plate placing table (1) is provided with the feeding and withdrawing table (3) for pushing the detection steel plate to be high to facilitate placing and taking out the steel plate at the bottom end, the detection assembly for detecting the defects of the steel plate is installed on the quick positioning table (2), the quick positioning table (2) is provided with the auxiliary observation table (201) correspondingly, the second sliding lead screw (206) is installed on the inside of the upper part of the quick positioning table (2), the second lead screw motor (205) is installed on one side of the quick positioning table (2), the output end of the second lead screw motor (205) is connected with the second sliding lead screw (206), and the auxiliary sliding groove (202) is formed in the corresponding position of the auxiliary observation table (201) and the quick positioning table (2).
2. The rapid positioning device for surface defect inspection of a steel sheet according to claim 1, characterized by: The second sliding lead screw (206) is provided with a limiting block inside the quick positioning table (2), the steel plate placing table (1) is provided with the lead screw mounting table (204) on one side, the first sliding lead screw (207) is installed in the lead screw mounting table (204), the first lead screw motor (208) is installed on one side of the lead screw mounting table (204), and the output end of the first lead screw motor (208) is connected with the first sliding lead screw (207). The protective plate (203) is installed on the side, away from the steel plate placing table (1), of the lead screw mounting table (204).
3. The rapid positioning device for surface defect detection of a steel sheet according to claim 1, characterized by: The steel plate placing table (1) is concave, and the support columns (101) are installed at the corners around the bottom end of the steel plate placing table (1).
4. The rapid positioning device for surface defect inspection of a steel sheet according to claim 3, characterized by: The through sliding groove (105) is formed through the steel plate placing table (1) on one side, the limiting frame (103) is detachably installed on the top end of the steel plate placing table (1), and the two groups of supporting bottom plates (104) are symmetrically installed on the inner side of the limiting frame (103).
5. The rapid positioning device for surface defect detection of a steel sheet according to claim 4, characterized by: The clamping table (106) is installed on the outer side near the edge of the steel plate placing table (1), the control table (107) is fixedly installed on the top end of the clamping table (106), and the lifting groove (108) is symmetrically formed through the top end of the steel plate placing table (1).
6. The rapid positioning device for surface defect inspection of a steel sheet according to claim 1, characterized by: The feeding and withdrawing table (3) is provided with two groups of symmetrically arranged feeding and withdrawing tables (3), the two groups of hydraulic rods (302) are symmetrically installed on the top end of the feeding and withdrawing table (3), the push plates (303) are installed on the piston ends of the two groups of hydraulic rods (302), and the hydraulic cylinders (301) are installed on the center of one side of the feeding and withdrawing table (3).
7. The rapid positioning device for surface defect detection of a steel sheet according to claim 2, characterized by: The detection assembly comprises the first sliding block (401) and the second sliding block (402), the second sliding lead screw (206) and the first sliding lead screw (207) are respectively connected with the second sliding block (402) and the first sliding block (401) on the outer sides, the laser scanners (404) are installed on the corresponding positions of the first sliding block (401) and the second sliding block (402), and the sliding holes (403) are formed through the first sliding block (401) and the second sliding block (402) on one side near the edge.