Online thickness measurement identification device for laser welding material

Abstract

The utility model discloses an on-line thickness measurement identification device for laser welding materials, which relates to the technical field of laser ranging and comprises a conveying line, fixing frames are fixedly mounted on two sides of the conveying line, adjusting columns are symmetrically mounted on the surfaces of the fixing frames, a vertical positioning rod is mounted on the adjusting column on one side, and a vertical lead screw is mounted on the adjusting column on the other side. The periphery of the lead screw is in threaded connection with an adjusting frame, the side, away from the lead screw, of the adjusting frame is slidably connected with the periphery of the positioning rod, and air cylinders are symmetrically installed at the bottom of the adjusting frame and connected with laser sensors. According to the device, the laser sensor is adopted to automatically measure the thickness of the plate, traditional manual measurement is replaced, the measurement precision and the measurement efficiency are effectively improved, the plate is compacted and flattened in cooperation with the pressing wheel, the influence of plate warping on the measurement precision is eliminated, and the measurement precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser ranging technical field, concretely relates to a laser welding material on -line thickness identification device. BACKGROUND

[0002] In the laser welding material processing field, especially in the laser welding production process of materials such as automobile steel, the stability of material thickness directly determines the strength, sealing property and appearance quality of the welded joint, and is one of the core key factors influencing the final product qualification rate.

[0003] In the prior art, the thickness of the material is generally measured by manual sampling inspection, which has many technical shortcomings that are difficult to overcome and has been unable to adapt to the modern production demand of high precision and high efficiency. From the measurement accuracy, the manual naked eye cannot distinguish the slight thickness difference, and can only rely on tools such as micrometer for manual measurement, but manual measurement has more or less differences, resulting in measurement error always maintaining about ±0.03mm, and with the development of laser welding technology to high precision, the industry requirement for material thickness tolerance has been improved to ≤±0.02mm, and the precision defect of traditional manual measurement directly causes batch quality hidden trouble, which brings great loss to production. In terms of production efficiency, the conventional running speed of laser welding assembly line is 10-15m / min, and manual detection needs to be frequently stopped or the assembly line speed needs to be reduced to complete sampling measurement, which greatly reduces the production efficiency and seriously restricts the capacity release. At the same time, the sampling frequency of manual detection is limited, and it is impossible to realize comprehensive coverage detection of all processed materials, resulting in that some materials with abnormal thickness may flow into the welding process, further increasing the probability of subsequent rework.

[0004] To solve the above problems, a laser welding material on-line thickness identification device is provided. Utility model content

[0005] To solve the above technical problems, a laser welding material on-line thickness identification device is provided.

[0006] The utility model adopts the following technical scheme to realize:

[0007] The utility model provides a kind of laser welding material on-line thickness identification device, comprising: conveying line, fixed mounting is equipped with fixed frame above the conveying line, two adjusting columns are symmetrically installed on the surface of fixed frame, vertical locating rod is installed on the adjusting column of one side, vertical screw rod is installed on the adjusting column of other side, adjusting frame is connected with the outer periphery of the adjusting column on the screw rod, driving motor is fixedly installed on the top of fixed frame, the top of the screw rod is fixedly connected with the output end of driving motor, two air cylinders are symmetrically installed on the bottom of adjusting frame, mounting frame is fixedly installed on the bottom of two air cylinders, mounting plate is fixedly installed on the mounting frame, laser sensor is fixedly installed on the bottom of mounting plate, the thickness of material can be measured by the laser sensor.

[0008] Preferably, the bottom surface of the mounting frame is rollingly mounted with a pressure roller.

[0009] Preferably, the laser sensor measures the thickness of the material based on laser triangulation.

[0010] Preferably, a control panel is fixedly installed on the fixed frame, and the control panel is provided with a touch screen and a buzzer.

[0011] Preferably, a warning light is fixedly installed on the top of the fixed frame.

[0012] As described above, the laser welding material on-line thickness identification device has the following advantages:

[0013] The device automatically measures the thickness of the sheet material using a laser sensor, replacing traditional manual measurement, effectively improving measurement accuracy and efficiency, and the pressure roller is used to compact and flatten the sheet material, eliminating the influence of sheet material warping on measurement accuracy and improving measurement accuracy.

[0014] The device uses an online continuous detection mode, without frequent shutdown or speed reduction like traditional manual sampling, effectively improving the operation rate of the assembly line, combined with fast alarm response time, significantly reducing the time for abnormal processing, avoiding the subsequent rework and resource waste caused by unqualified materials flowing into the subsequent welding process, and significantly improving the overall production rhythm.

[0015] The double alarm system and the flow line emergency stop linkage function ensure that abnormal conditions are discovered and handled in time, reducing the dependence on real-time monitoring of operators, and management personnel can view data in real time through the touch screen and adjust parameters flexibly according to production needs, realizing remote and intelligent control of the production process, reducing labor input and management costs for manual inspection. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the lead screw, positioning rod, and other components of this utility model;

[0018] Figure 3 This is a schematic diagram of the drive motor, warning light, and other components of this utility model;

[0019] Figure 4 As shown in this utility model Figure 3 Enlarged diagram of point A in the middle.

[0020] The reference numerals in the accompanying drawings of this utility model are as follows: 1. Conveyor line; 2. Control panel; 3. Warning light; 4. Drive motor; 5. Fixing frame; 6. Buzzer; 7. Touch screen; 8. Adjusting column; 9. Positioning rod; 10. Lead screw; 11. Cylinder; 12. Pressure roller; 13. Mounting frame; 14. Laser sensor; 15. Mounting plate; 16. Adjusting frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] See Figures 1-4 As shown, the online thickness measurement and identification device for laser welding materials provided in this embodiment will be described in detail below:

[0023] An online thickness measurement and identification device for laser welding materials, such as Figures 1-4 As shown, the system includes: a conveyor line 1, a fixed frame 5 fixedly installed above the conveyor line 1, adjusting columns 8 symmetrically installed on the surface of the fixed frame 5, a vertical positioning rod 9 installed inside one adjusting column 8, and a vertical lead screw 10 installed inside the other adjusting column 8, with an adjusting frame 16 threadedly connected to the outer circumference of the lead screw 10, the side of the adjusting frame 16 away from the lead screw 10 being slidably connected to the outer circumference of the positioning rod 9, a drive motor 4 fixedly installed on the top of the fixed frame 5, and the output end of the drive motor 4 fixedly connected to the top of the lead screw 10. Two cylinders 11 are symmetrically installed at the bottom of the adjusting frame 16, and the same mounting frame 13 is fixedly installed at the bottom of the two cylinders 11, with pressure rollers 12 symmetrically rolled on the bottom surface of the mounting frame 13.

[0024] like Figures 1-4As shown, the mounting frame 13 is peripherally mounted with a mounting plate 15, the bottom of the mounting plate 15 is fixedly mounted with a laser sensor 14, the top of the fixed frame 5 is fixedly mounted with a warning light 3, one side wall of the fixed frame 5 is fixedly mounted with a control panel 2, and the surface of the control panel 2 is provided with a touch screen 7 and a buzzer 6. After the device is started, the operator can set parameters through the touch screen 7 on the surface of the control panel 2, and input the plate thickness range on the parameter setting page. The laser sensor 14 emits laser irradiation on the plate surface based on the principle of triangular reflection, collects distance data from the plate surface, and the laser sensor 14 can complete data collection every 0.1s, ensuring the comprehensiveness and stability of data collection. The distance data collected by the laser sensor 14 is transmitted to the control panel 2 through the data line, the central processing unit in the control panel 2 calculates the actual thickness of the plate according to the preset ladder diagram program by calculating the difference between the measured value of the laser sensor 14 and the system reference value, and compares the real-time measured thickness value with the preset threshold value. If the thickness value is within the allowable range, the equipment keeps continuous operation; if it exceeds the threshold range, the system starts the alarm delay judgment to avoid false alarm caused by instantaneous fluctuation. When the control panel 2 confirms the thickness abnormality and reaches the set alarm delay time, the alarm system is triggered immediately, on the one hand, the warning light 3 is activated, and the buzzer 6 is started, realizing sound and light double alarm; on the other hand, the signal is sent to control the conveying line 1 to stop suddenly through the control line, preventing unqualified plates from flowing into the subsequent welding process. During the detection process, the touch screen 7 displays the current thickness measurement value, the historical maximum and minimum values, and the continuous thickness change curve in real time, and the control panel 2 automatically stores all the collected data to provide complete data support for quality traceability. The manager can check the data in real time through the touch screen 7 and intervene in advance in abnormal situations.

[0025] The working principle of the utility model is as follows:

[0026] After the device is started, the operator sets parameters through the touch screen 7 on the surface of the control panel 2, inputs the plate thickness range on the parameter setting page, completes device initialization, and prepares for subsequent detection. Then, the driving motor 4 at the top of the fixed frame 5 is started, the output end of the driving motor 4 drives the screw rod 10 to rotate, the adjusting frame 16 is threadedly connected with the screw rod 10, and the other side of the adjusting frame 16 is in sliding fit with the positioning rod 9, so that when the screw rod 10 rotates, the adjusting frame 16, the cylinder 11 at the bottom, the mounting frame 13, the compression wheel 12, the mounting plate 15 and the laser sensor 14 integrally move along the vertical direction stably, the distance that the adjusting frame 16 moves downward is determined according to the input plate thickness range, so that the distance between the laser sensor 14 and the plate surface is in the effective measurement range, and the detection height calibration is completed.

[0027] The sheet metal is conveyed to the detection station through the conveying line 1, the control panel 2 sends a control signal to the air cylinder 11, the air cylinder 11 drives the pressing wheel 12 inside the mounting frame 13 to move downward, and the sheet metal is extruded and positioned, so that the sheet metal is compacted and flattened, and the thickness measurement of the subsequent laser sensor 14 is facilitated. The process can be accurately controlled by the PLC program to raise and lower the pressing wheel 12, and can be matched with a high-precision pneumatic valve to adjust the air pressure of the air cylinder 11, which not only eliminates the influence of sheet metal warping on measurement accuracy, but also avoids damage to the sheet metal. Then the laser sensor 14 starts to work, based on the principle of triangular reflection, the laser sensor 14 emits laser to irradiate the surface of the sheet metal, collects the distance data of the surface of the sheet metal, and the laser sensor 14 can complete data acquisition every 0.1s to ensure the comprehensiveness and stability of data acquisition. The distance data collected by the laser sensor 14 is transmitted to the control panel 2 through the data line, and the central processing unit in the control panel 2 calculates the actual thickness of the sheet metal according to the preset ladder diagram program, calculates the difference between the measured value of the laser sensor 14 and the system reference value, and compares the real-time measured thickness value with the preset threshold value. If the thickness value is within the allowable range, the equipment continues to run; if it exceeds the threshold range, the system starts the alarm delay judgment to avoid false alarms caused by instantaneous fluctuations, and when the control panel 2 confirms the thickness abnormality and reaches the set alarm delay time, the alarm system is triggered immediately, on the one hand, the warning light 3 is activated, and the buzzer 6 is started at the same time, realizing sound and light dual alarm; on the other hand, the conveying line 1 is sent to stop through the control line, so as to prevent unqualified sheet metal from flowing into the subsequent welding process. During the detection process, the touch screen 7 displays the current thickness measurement value, the historical maximum and minimum values, and the continuous thickness change curve in real time, and the control panel 2 automatically stores all the collected data to provide complete data support for quality traceability. The management personnel can check the data in real time through the touch screen 7 and intervene in advance in abnormal situations.

[0028] The above only describes the embodiments of the present application and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A laser welding material online thickness measurement identification device, characterized by, Include: The conveying line (1), the fixed frame (5) is fixedly installed above the conveying line (1), two adjusting columns (8) are symmetrically installed on the surface of the fixed frame (5), the vertical positioning rod (9) is installed on one side of the adjusting column (8), the vertical lead screw (10) is installed on the other side of the adjusting column (8), the adjusting frame (16) is threadedly connected with the outer circumference of the lead screw (10), the side, away from the lead screw (10), of the adjusting frame (16) is slidably connected with the outer circumference of the positioning rod (9), the driving motor (4) is fixedly installed on the top of the fixed frame (5), the output end of the driving motor (4) is fixedly connected with the top of the lead screw (10), two air cylinders (11) are symmetrically installed on the bottom of the adjusting frame (16), the mounting frame (13) is fixedly installed on the bottom of the two air cylinders (11), the mounting plate (15) is fixedly installed on the mounting frame (13), the laser sensor (14) is fixedly installed on the bottom of the mounting plate (15), the laser sensor (14) can measure the thickness of the material.

2. The laser welding material online thickness measurement identification device according to claim 1, characterized in that, The bottom surface of the mounting frame (13) is rollingly installed with a pressure roller (12).

3. The apparatus for online thickness measurement and identification of laser welding material according to claim 1, characterized in that, The laser sensor (14) measures the thickness of the material based on the laser triangulation method.

4. The apparatus for online thickness measurement and identification of laser welding material according to claim 1, characterized in that, The control panel (2) is fixedly installed on the fixed frame (5), the control panel (2) is provided with a touch screen (7) and a buzzer (6).

5. The apparatus for online thickness measurement of laser welding material according to claim 3, wherein, The warning light (3) is fixedly installed on the top of the fixed frame (5).

Images