Device and method for automatically detecting steel plate

Abstract

The invention provides a steel plate automatic detection device which comprises a rack, marbles, a weighing assembly, a conveying assembly, a detection assembly and an operation panel assembly, a power source is arranged in the rack, the detection assembly is arranged on the rack, the multiple marbles are arranged below the detection assembly, the weighing assembly is arranged between the two marbles, the conveying assembly is arranged on the weighing assembly, and the detection assembly is arranged on the operation panel assembly. The device has the beneficial effects that the device can realize automatic detection of the steel plate, and can realize automatic recording of flatness defects on the surface of the steel plate, so that the labor intensity of workers is reduced, the production efficiency is improved, and the production efficiency is improved. A high-precision measurement result can be obtained, the working efficiency of steel plate dimension measurement is improved, and the steel plate dimension measurement result is stable and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic detection, in particular to a steel plate automatic detection device and method thereof. BACKGROUND

[0002] At present, the steel plate detection is mainly completed by manual method. The length and width of the steel plate are measured by a meter ruler, and the thickness of the steel plate is measured by a micrometer. The measurement results are recorded on the surface of the steel plate and then input into a computer. The measurement accuracy depends on the experience and responsibility of the detection workers, and the measurement error is random. In addition, due to the influence of rolling, shearing and other factors, the steel plate is generally not a standard rectangle. The workers can only detect the length, width and thickness of the fixed position of the steel plate, and cannot find the minimum width, length and thickness required by the national standard. Therefore, the misjudgment may occur. For the steel plate size parameters such as camber, cutting angle and unevenness, which are difficult to measure manually, the qualitative method is generally used for visual determination, and the experience is used to determine whether it is qualified. There is no quantitative value for judgment, which further brings uncertainty to the steel plate detection results. After the steel plate size measurement is completed, the workers manually retrieve the design size of the steel plate from the computer according to the steel plate characteristic code, and manually judge whether it is qualified. The judgment results are marked on the surface of the steel plate. The whole process is time-consuming and affects the production rhythm.

[0003] In the steel plate production process, some customers purchase the steel plate according to the size of the steel plate. Therefore, the size of the steel plate is an important parameter for the production control of the steel plate. In order to meet the requirements of customers, the steel production enterprises usually leave a certain size allowance on the size of the steel plate to ensure that the product does not meet the size requirements of the customers. If the size precision of the steel plate cannot be accurately controlled, the size allowance may be too large, which will provide more weight of the steel plate to the customers, especially for the steel plate with large thickness (thickness of 50-450mm).

[0004] In the traditional steel plate size control method, the length of the steel plate is measured by measuring the rotation of the roller. However, due to the change of material specifications and the fluctuation of production speed and other process problems, it is difficult to effectively control the length precision. In addition, for the cross-cut plate with high shape size requirements, the manual measurement method is generally used. The tape measure is used to measure the length of two diagonal lines of the rectangular steel plate respectively, and then the deviation of the two diagonal line lengths is used to evaluate the rectangular degree of the steel plate. However, due to the low measurement accuracy of the tape measure itself and the large measurement error of manual measurement, the result of the rectangular degree of the steel plate judged by the tape measure also has a large deviation.

[0005] In the prior art, there are automatic measuring devices for measuring the size of a steel plate by using an infrared ranging method and automatic measuring devices for measuring the size of a steel plate by using a mechanical contact measuring method. However, when measuring by using the infrared ranging method, the accuracy of the infrared ranging is low, and thus the high-precision requirement of the size of the steel plate cannot be met. When measuring by using the mechanical contact measuring method, the measuring accuracy is difficult to control due to process problems such as changes in material specifications and fluctuations in production speed.

[0006] Chinese Patent CN201889675U discloses a steel plate thickness online real-time automatic detection device which is composed of an engineering cylinder, a detection device support, a sensor and a detection probe. The engineering cylinder is installed on the detection device support. A mechanical spherical probe is installed on the plunger head of the engineering cylinder. The mechanical spherical probe is rigidly connected with a sliding guide rail through a connecting block. The sliding guide rail is vertically and slidably connected with a guide rail seat. The guide rail seat is installed on the detection device support. A photoelectric position detection switch is installed on the lower part of the sliding guide rail. The upper part of the sliding guide rail is rigidly connected with a reading head of a linear position sensor. The linear position sensor is installed on the detection device support. The reading head slides on the linear position sensor along with the sliding guide rail. The mechanical spherical probe starts automatic real-time detection after being in contact with the steel plate. The steel plate thickness is detected in real time online without stopping the machine, the work efficiency is improved, the labor intensity is reduced, and the safety of the equipment is increased. SUMMARY

[0007] The present application aims to solve the above technical problems and provides a novel steel plate automatic detection device and method. The device can realize automatic detection of the steel plate, automatic recording of the flatness and defects of the surface of the steel plate, reduction of the labor intensity, high-precision measurement results, improvement of the work efficiency of the steel plate size measurement, and stable and reliable results of the steel plate size measurement.

[0008] The present application is achieved by the following technical solutions: The utility model provides an automatic detection device of steel sheet, including frame, marble, weighing assembly, conveying assembly, detection assembly, operation panel assembly, the inside of frame is equipped with power, be equipped with detection assembly on the frame, be equipped with a plurality of marbles under the detection assembly, be equipped with weighing assembly between two marbles, be equipped with conveying assembly on the weighing assembly, be equipped with operation panel assembly on the outer lateral wall of detection assembly one side, be equipped with steel sheet above conveying assembly, operation panel assembly with weighing assembly, conveying assembly, detection assembly electricity is connected, power respectively with operation panel assembly, weighing assembly, conveying assembly, detection assembly electricity is connected, detection assembly includes left side detection support, right side detection support, test mobile crossbeam, high speed synchronous belt linear module, CCD camera part, laser positioner, left side detection support installs on the frame left side top, right side detection support installs on the frame right side top, left side detection support and right side detection support top are equipped with high speed synchronous belt linear module, test mobile crossbeam installs on high speed synchronous belt linear module, be equipped with CCD camera part on test mobile crossbeam, the front end of CCD camera part is equipped with laser positioner, the steel plate above conveying assembly is photographed image by CCD camera part alignment, and the CCD camera on CCD camera part uploads to the operation display on operation panel assembly after photographing image, and the steel plate information is shown through operation display.

[0009] As further, the weighing assembly includes a weighing fixed plate, a weight detection sensor, and a cylinder. The bottom of the weighing fixed plate is provided with a plurality of weight detection sensors. The upper part of the weighing fixed plate is provided with a plurality of cylinders. The output shaft of the cylinder is connected with the conveying assembly.

[0010] As further, the conveying assembly includes a guide plate, a roller fixed plate, a conveying roller, a conveying belt, a motor fixed plate, a coupling, and a stepping motor. The guide plate is installed on the cylinder. The guide plate is provided with a roller fixed plate. The inside of the roller fixed plate is provided with a plurality of conveying rollers. The conveying roller is sleeved with a conveying belt. The outer lateral wall of the roller fixed plate is provided with a motor fixed plate. The motor fixed plate is provided with a coupling. One end of the coupling is connected with the output shaft of the stepping motor. The other end of the coupling is connected with the conveying roller.

[0011] As further, the CCD camera component includes a CCD camera fixing plate, a CCD camera linear module, a CCD camera connecting arm, a CCD camera, a CCD camera fixing shell, the CCD camera fixing plate is installed on the test moving beam, the CCD camera linear module is arranged on the CCD camera fixing plate, one end of the CCD camera connecting arm is installed on the CCD camera linear module, the other end of the CCD camera connecting arm is connected with the CCD camera, the CCD camera connecting arm and the CCD camera are seamlessly docked and installed on the CCD camera linear module, and the CCD camera is provided with a CCD camera cover.

[0012] As further, the operation panel assembly includes a keyboard display support, an operation display, an ultrathin keyboard and a wireless mouse, the keyboard display support is installed on the left detection support, the keyboard display support is provided with a keyboard mounting position at the front end, the ultrathin keyboard is placed in the keyboard mounting position at the front end of the keyboard display support, the ultrathin keyboard is provided with the wireless mouse at one side, and the operation display is arranged at the top end of the keyboard display support and electrically connected with the weight detection sensor, the CCD camera and the laser positioner.

[0013] As further, the marble rear end is provided with a plurality of thickness test comparison scales, and the thickness test comparison scales are marked with thickness.

[0014] As further, the thickness test comparison scale is in the shape of an oblique triangle.

[0015] As further, an automatic steel plate detection method includes the following steps: S1: the steel plate to be detected is placed above the marble, the weight detection sensor on the weighing assembly senses the weight of the steel plate to be detected above the marble, the weight detection sensor detects the weight of the steel plate and uploads the weight to the operation display, and the operation display displays the weight of the steel plate; S2: the steel plate to be detected is conveyed to the detection assembly below through the conveying belt on the conveying assembly, the high-speed synchronous belt linear module drives the test moving beam to move forward and backward, the test moving beam drives the CCD camera component and the laser positioner to move forward and backward, the distance information of each moment of the test moving beam moving forward and backward and the steel plate to be detected is recorded on the operation display; S3: the CCD camera component moves forward and backward along the entire steel plate to be detected, the flatness on the surface of the steel plate to be detected is photographed by the CCD camera, the photographed image is uploaded to the operation display, and the defects of the flatness on the surface of the steel plate to be detected are displayed on the operation display; S4: the laser positioner moves the whole steel plate to be detected back and forth with the test moving crossbeam, after the test moving crossbeam returns, the laser positioner measures all the sizes of the steel plate to be detected, and transmits all the sizes to the operation display, and the operation display displays the size information of the measured steel plate to be detected.

[0016] As further, the size information of the steel plate to be detected includes length size and width size.

[0017] The beneficial effects of the present application are: (1) The device has simple structure, ingenious design, small space occupation, stable structure operation, high cost performance, can realize automatic detection of the steel plate, can realize automatic recording of the flatness and defects on the surface of the steel plate, thereby reducing the labor intensity, and can obtain high-precision measurement results; (2) The marble rear end is provided with a plurality of thickness test comparison scales, and the thickness test comparison scales are provided with thickness marks, which solves the problem that after the steel plate size measurement is completed, the worker needs to manually retrieve the steel plate design size from the computer according to the steel plate characteristic code, manually judges whether it is qualified or not, and writes down the judgment result on the surface of the steel plate. The whole process is time-consuming and affects the production rhythm; (3) The device is provided with a CCD camera, which can take images of the flatness on the surface of the steel plate to be detected, upload the photographed images to the operation display, and display the flatness and defects on the surface of the steel plate to be detected through the operation display, which can realize automatic recording of the flatness defects on the surface of the steel plate, thereby reducing the labor intensity and improving the detection efficiency and accuracy; (4) The device is provided with a laser positioner, which moves the whole steel plate to be detected back and forth with the test moving crossbeam, after the test moving crossbeam returns, the laser positioner measures all the sizes of the steel plate to be detected, and transmits all the sizes to the operation display, and the operation display displays the size information of the measured steel plate to be detected, which can obtain high-precision measurement results, improve the working efficiency of the steel plate size measurement, and the result of the steel plate size measurement is stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the steel plate automatic detection device of the present application; Figure 2 It is an explosion structural schematic view of the steel plate automatic detection device of the present application; Figure 3 It is a structural schematic view of the detection assembly of the present application; Figure 4 It is an explosion structural schematic view of the detection assembly of the present application; Figure 5 It is a structural schematic view of the weighing assembly of the present application; Figure 6 The schematic diagram of the explosion structure of the weighing assembly of the application; Figure 7 The schematic diagram of the structure of the conveying assembly of the application; Figure 8 The schematic diagram of the explosion structure of the conveying assembly of the application; Figure 9 The schematic diagram of the structure of the CCD camera component of the application; Figure 10 The schematic diagram of the explosion structure of the CCD camera component of the application; Figure 11 The schematic diagram of the structure of the operation panel assembly of the application; Figure 12 The schematic diagram of the explosion structure of the operation panel assembly of the application; The figure mark: 1, the frame; 2, marble; 21, thickness test contrast ruler; 3, weighing assembly; 31, weighing fixed plate; 32, weight detection sensor; 33, air cylinder; 4, conveying assembly; 41, guide plate; 42, roller fixed plate; 43, conveying roller; 44, conveying belt; 45, motor fixed plate; 46, coupling; 47, stepping motor; 5, detection assembly; 51, left detection support; 52, right detection support; 53, test moving crossbeam; 54, high-speed synchronous belt linear module; 55, CCD camera component; 550, CCD camera fixed plate; 551, CCD camera linear module; 552, CCD camera connecting arm; 553, CCD camera; 554, CCD camera fixed shell; 555, CCD camera cover; 56, laser positioner; 6, operation panel assembly; 61, keyboard display support; 62, operation display; 63, ultrathin keyboard; 64, wireless mouse; 7, steel plate. DETAILED DESCRIPTION

[0019] The application will be further described below in conjunction with the drawings and specific embodiments: Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the description and claims of this application as well as the above discussion of the drawings merely provides illustrative examples of specific embodiments of the application. Accordingly, the application is not limited to these illustrative examples. The terms "comprising", "having", "including", and "containing" used herein are meant to be interpreted in a non-limiting manner. The terms "first", "second", "third", etc. are used to distinguish different objects and are not meant to be limiting.

[0020] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] Refer to Figures 1-4 As shown, an automatic detection device for steel plates includes a frame 1, marbles 2, a weighing component 3, a conveying component 4, a detection component 5, and an operation panel component 6. A power supply is provided inside the frame 1, a detection component 5 is provided on the frame 1, a plurality of marbles 2 are provided below the detection component 5, a weighing component 3 is provided between two marbles 2, a conveying component 4 is provided on the weighing component 3, an operation panel component 6 is provided on the outer wall of one side of the detection component 5, a steel plate 7 is provided above the conveying component 4, the operation panel component 6 is electrically connected to the weighing component 3, the conveying component 4, and the detection component 5, the power supply is electrically connected to the operation panel component 6, the weighing component 3, the conveying component 4, and the detection component 5 respectively, the detection component 5 includes a left detection bracket 51, a right detection bracket 52, a test moving beam 53, a high-speed synchronous A step belt linear module 54, a CCD camera component 55, and a laser locator 56. The left detection bracket 51 is installed on the upper left side of the frame 1, and the right detection bracket 52 is installed on the upper right side of the frame 1. A high-speed synchronous belt linear module 54 is provided on the top of the left detection bracket 51 and the right detection bracket 52. The test moving beam 53 is installed on the high-speed synchronous belt linear module 54. A CCD camera component 55 is provided on the test moving beam 53. A laser locator 56 is provided at the front end of the CCD camera component 55. The CCD camera component 55 is aligned with the steel plate 7 above the conveying component 4 to shoot images. The CCD camera 553 on the CCD camera component 55 shoots images and uploads them to the operation display 62 on the operation panel component 6, and the information of the steel plate 7 is displayed through the operation display 62.

[0022] Refer to Figures 5-6 As shown, the weighing component 3 includes a weighing fixed plate 31, a weight detection sensor 32, and a cylinder 33. Several weight detection sensors 32 are provided at the bottom of the weighing fixed plate 31, and several cylinders 33 are provided on the upper part of the weighing fixed plate 31. The output shaft of the cylinder 33 is connected to the conveying component 4.

[0023] Refer to Figures 7-8As shown in the figure, the conveying assembly 4 includes a guide plate 41, a roller fixing plate 42, a conveying roller 43, a conveying belt 44, a motor fixing plate 45, a coupling 46, and a stepping motor 47. The guide plate 41 is installed on the air cylinder 33, and the guide plate 41 is provided with the roller fixing plate 42. The roller fixing plate 42 is internally provided with a plurality of conveying rollers 43. The conveying rollers 43 are sleeved with the conveying belt 44. The outer side wall of the roller fixing plate 42 is provided with the motor fixing plate 45. The motor fixing plate 45 is provided with the coupling 46. One end of the coupling 46 is connected with the output shaft of the stepping motor 47. The other end of the coupling 46 is connected with the conveying roller 43.

[0024] As shown in the figure, Figures 9-10 As shown in the figure, the CCD camera component 55 includes a CCD camera fixing plate 550, a CCD camera linear module 551, a CCD camera connecting arm 552, a CCD camera 553, and a CCD camera fixing shell 554. The CCD camera fixing plate 550 is installed on the test moving beam 53. The CCD camera fixing plate 550 is provided with the CCD camera linear module 551. One end of the CCD camera connecting arm 552 is installed on the CCD camera linear module 551. The other end of the CCD camera connecting arm 552 is connected with the CCD camera 553. The CCD camera connecting arm 552 and the CCD camera 553 are seamlessly connected and installed on the CCD camera linear module 551 by the CCD camera fixing shell 554. The lower part of the CCD camera 553 is provided with a CCD camera cover 555.

[0025] As shown in the figure, Figures 11-12 As shown in the figure, the operation panel assembly 6 includes a keyboard display support 61, an operation display 62, an ultrathin keyboard 63, and a wireless mouse 64. The keyboard display support 61 is installed on the left detection support 51. The front end of the keyboard display support 61 is provided with a keyboard mounting position. The ultrathin keyboard 63 is placed in the keyboard mounting position at the front end of the keyboard display support 61. One side of the ultrathin keyboard 63 is provided with the wireless mouse 64. The top end of the keyboard display support 61 is provided with the operation display 62. The operation display 62 is electrically connected with the weight detection sensor 32, the CCD camera 553, and the laser positioner 56.

[0026] Preferably, the marble 2 is provided with a plurality of thickness test comparison scales 21. The thickness test comparison scales 21 are marked with thickness.

[0027] Preferably, the thickness test comparison scales 21 are in the shape of an isosceles triangle.

[0028] Preferably, the steel plate automatic detection method includes the following steps: S1: the steel plate 7 to be detected is placed above the marble 2, the weight of the steel plate 7 to be detected above the marble 2 is sensed by the weight detection sensor 32 on the weighing assembly 3, the weight of the steel plate 7 is detected by the weight detection sensor 32 and uploaded to the operation display 62, and the operation display 62 displays the weight of the steel plate 7; S2: the steel plate 7 to be detected is further conveyed to below the detection assembly 5 by the conveying belt 44 on the conveying assembly 4, the high-speed synchronous belt linear module 54 drives the test moving beam 53 to move back and forth, the test moving beam 53 drives the CCD camera component 55 and the laser positioner 56 to move back and forth, the distance information of each moment of the test moving beam 53 moving back and forth and the steel plate 7 to be detected is recorded to the operation display 62; S3: the CCD camera component 55 moves back and forth along with the test moving beam 53 through the entire steel plate 7 to be detected, the flatness on the surface of the steel plate 7 to be detected is imaged by the CCD camera 553, the imaged image is uploaded to the operation display 62 after imaging, and the operation display 62 displays the defects of the flatness on the surface of the steel plate 7 to be detected; S4: the laser positioner 56 moves back and forth along with the test moving beam 53 through the entire steel plate 7 to be detected, after the test moving beam 53 moves back, the laser positioner 56 measures all the sizes of the steel plate 7 to be detected and transmits all the sizes to the operation display 62, and the operation display 62 displays the size information of the steel plate 7 to be detected measured.

[0029] Preferably, the size information of the steel plate 7 to be detected includes length size and width size.

[0030] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make appropriate changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. An automatic steel plate detection device, characterized in that: The utility model provides a kind of marble cutting machine, including rack, marble, weighing assembly, conveying assembly, detection assembly, operating panel assembly, the inside of the rack is equipped with power supply, the rack is equipped with detection assembly, the detection assembly below is equipped with several marbles, weighing assembly is equipped between two marbles, conveying assembly is equipped on the weighing assembly, operating panel assembly is equipped on the outer side wall of detection assembly side, conveying assembly top is equipped with steel plate, operating panel assembly is electrically connected with weighing assembly, conveying assembly, detection assembly, power supply is electrically connected with operating panel assembly, weighing assembly, conveying assembly, detection assembly, detection assembly includes left side detection support, right side detection support, test mobile crossbeam, high-speed synchronous belt linear module, CCD camera component, laser positioner, left side detection support is installed on the rack left side top, right side detection support is installed on the rack right side top, left side detection support and right side detection support top are equipped with high-speed synchronous belt linear module, test mobile crossbeam is installed on the high-speed synchronous belt linear module, test mobile crossbeam is equipped with CCD camera component, CCD camera component front end is equipped with laser positioner, CCD camera component is aligned steel plate above conveying assembly and is photographed image, CCD camera on CCD camera component is uploaded to operating display on operating panel assembly after image shooting, and steel plate information is shown by operating display.

2. The apparatus according to claim 1, wherein: Weighing assembly includes weighing fixed plate, weight detection sensor, cylinder, the bottom of weighing fixed plate is equipped with several weight detection sensors, the upper portion of weighing fixed plate is equipped with several cylinders, cylinder output shaft is connected with conveying assembly.

3. The apparatus according to claim 2, wherein: Conveying assembly includes guide plate, roller fixed plate, conveying roller, conveying belt, motor fixed plate, coupling, stepper motor, guide plate is installed on the cylinder, guide plate is equipped with roller fixed plate, roller fixed plate is equipped with several conveying rollers in the inside, conveying belt is sleeved on conveying roller, motor fixed plate is equipped on the outer side wall of roller fixed plate, motor fixed plate is equipped with coupling, the output shaft of stepper motor is connected with the one end of coupling, the other end of coupling is connected with conveying roller.

4. The apparatus according to claim 1, wherein: CCD camera component includes CCD camera fixed plate, CCD camera linear module, CCD camera connecting arm, CCD camera, CCD camera fixed housing, CCD camera fixed plate is installed on the test mobile crossbeam, CCD camera linear module is equipped on the CCD camera fixed plate, one end of CCD camera connecting arm is installed on the CCD camera linear module, CCD camera is connected on the other end of CCD camera connecting arm, CCD camera connecting arm, CCD camera are seamlessly docked and installed on the CCD camera linear module by CCD camera, the lower portion of CCD camera is equipped with CCD camera cover.

5. The apparatus according to claim 1, wherein: The operation panel assembly comprises a keyboard display support, an operation display, an ultrathin keyboard and a wireless mouse, the keyboard display support is installed on the left detection support, the keyboard display support is provided with a keyboard mounting position at the front end, the ultrathin keyboard is placed in the keyboard mounting position at the front end of the keyboard display support, the ultrathin keyboard is provided with the wireless mouse at one side, the keyboard display support is provided with the operation display at the top end, and the operation display is electrically connected with the weight detection sensor, the CCD camera and the laser positioner.

6. The apparatus according to claim 1, wherein: The marble rear end is provided with a plurality of thickness test comparison scales, and the thickness test comparison scales are marked with thickness.

7. The apparatus according to claim 6, wherein: The thickness test comparison scale is in the shape of an inclined triangle.

8. A steel sheet automatic detection method characterized by comprising: The method comprises the following steps: S1: the steel plate to be detected is placed above the marble, the weight detection sensor on the weighing assembly senses the weight of the steel plate to be detected above the marble, the weight detection sensor detects the weight of the steel plate and transmits the weight to the operation display, and the operation display displays the weight of the steel plate; S2: the steel plate to be detected is conveyed to below the detection assembly through the conveying belt on the conveying assembly, the high-speed synchronous belt linear module drives the test moving cross beam to move forward and backward, the test moving cross beam drives the CCD camera component and the laser positioner to move forward and backward, the distance information of each moment of the test moving cross beam moving forward and backward and the steel plate to be detected is recorded on the operation display; S3: the CCD camera component moves forward and backward along with the test moving cross beam through the entire steel plate to be detected, the flatness on the surface of the steel plate to be detected is photographed by the CCD camera, the photographed image is uploaded to the operation display, and the flatness defects on the surface of the steel plate to be detected are displayed on the operation display; S4: the laser positioner moves forward and backward along with the test moving cross beam through the entire steel plate to be detected, after the test moving cross beam moves backward, the laser positioner measures all the sizes of the steel plate to be detected, and transmits all the sizes to the operation display, and the operation display displays the size information of the steel plate to be detected.

9. The method of claim 8, wherein: The size information of the steel plate to be detected comprises length size and width size.

Images