Thickness on-line laser measuring device for building decoration material production line

Abstract

The application discloses a kind of thickness online laser measuring device for building decoration material production line, it is related to laser measuring technical field, including conveying table fixed frame one being installed on the conveying table and servo motor being installed on the fixed frame one, laser lifting mechanism is installed on the fixed frame one, the laser head synchronous lifting mechanism is used to realize the compatible measurement of multiple specifications plate, when needing to measure the thickness of plate, laser probe position can be adjusted synchronously according to building decoration plate specification and incoming material height variation, avoid exceeding the effective range of ranging, resulting in measurement failure, while it can ensure that multiple specifications plate is in horizontal state, prevent the downward pressure of conveying belt on conveying table due to plate too heavy, cause plate bending, affect the measurement result of plate, by guaranteeing plate maintains horizontal plane state to carry out thickness detection, can effectively avoid that laser oblique incidence generates thickness measurement virtual value when plate is inclined.

Description

Technical Field

[0001] This invention relates to the field of laser measurement technology, specifically to an online laser thickness measurement device for a building decoration material production line. Background Technology

[0002] In the production and processing of building decorative panels, panel thickness is a core indicator for measuring product quality. To ensure the quality of products leaving the factory, modern production lines are generally equipped with laser online thickness measuring devices for real-time thickness detection of various continuously conveyed decorative panels. Relying on the principle of laser ranging, the online acquisition and detection of panel thickness is completed, which can replace manual sampling and realize automated detection of panel thickness. It is widely used in the large-scale production of various building decorative panels.

[0003] Currently available laser thickness measuring devices still have many technical defects, making it difficult to adapt to the stable and accurate detection needs of diverse board materials. Traditional laser measuring instruments are mostly fixed structures, making it difficult to adaptively adjust their position according to different specifications of building decoration boards and changes in material height. This easily leads to the sensor deviating from the optimal measuring distance range, resulting in frequent data loss and measurement failures. Furthermore, when changing board specifications, manual debugging is required, which seriously affects the production line efficiency. At the same time, during the board conveying process, the weight of the board itself will compress the conveyor belt and cause deformation, resulting in the board bending. The board is also prone to tilting, warping, and conveying vibration, which not only causes the laser to be obliquely incident, resulting in false thickness measurement values, but also leads to misalignment of upper and lower laser measurement points, low detection accuracy, large data fluctuations, and inconsistent board detection benchmarks. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an online laser thickness measurement device for building decoration material production lines, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online thickness laser measuring device for a building decoration material production line, comprising a conveyor table mounted on a fixed frame on the conveyor table and a servo motor mounted on the fixed frame. The online thickness laser measuring device for a building decoration material production line further includes: A laser lifting mechanism is installed on the fixed frame one, and the laser head synchronous lifting mechanism is used to realize compatible measurement of multi-specification plates; The laser lifting mechanism includes a threaded rod installed at the output end of the servo motor, a lifting plate installed on the threaded rod, and a laser measuring device installed on the lifting plate; A horizontal alignment mechanism is installed on the conveyor table. The horizontal alignment mechanism is used to avoid laser thickness measurement errors caused by the tilting of the plate and to improve measurement accuracy.

[0006] Preferably, the horizontal alignment mechanism includes a movable rod mounted on the conveyor table, a movable plate mounted on the movable rod, an elastic rod mounted on the movable plate by a spring, a push plate mounted on the elastic rod, a reference parallel plate mounted on the push plate, an L-shaped plate mounted on the movable plate, an inclined plate fixedly mounted on the L-shaped plate, and a lower pressure plate mounted on the lifting plate. The laser measuring device is used to detect the thickness of the sheet material using laser light, and the reference parallel plate is used to ensure that the sheet material is on the same horizontal line.

[0007] Preferably, the surface of the moving rod is provided with a spring, and the lower pressure plate will push the inclined plate to move by the squeezing force during operation. The lower pressure plate is equipped with rollers, and the push plate is used to position and fix the plate.

[0008] Preferably, the laser lifting mechanism includes a guide calibration mechanism mounted on the lifting plate. The guide calibration mechanism includes an L-shaped plate II mounted on the lifting plate, a fixed frame II mounted on the conveyor platform, a fixed plate mounted on the fixed frame II, a hinge plate mounted on the fixed plate, a force-bearing rod mounted on the hinge plate, a U-shaped frame mounted on the force-bearing rod, a moving rod II mounted on the fixed plate by a spring, and a guide arc plate mounted on the moving rod II. The guide arc plate is used to guide the plate material, and a rotating wheel is installed on the guide arc plate.

[0009] Preferably, the guide calibration mechanism further includes an L-shaped perforated plate mounted on the movable plate, a sliding rod mounted on the L-shaped perforated plate by a spring, a chamfered block mounted on the elastic rod, a triangular block mounted on the sliding rod, and a pressure plate mounted on the sliding rod. The pressure plate is used to apply downward pressure to the plate to prevent bending of the plate and thus avoid affecting the measurement structure.

[0010] Preferably, the inclined block and the triangular block are in contact with each other, and the inclined block will drive the triangular block to move downward through the squeezing force during operation. The L-shaped hollow plate is in contact with the pressure plate, the U-shaped frame is slidably connected to the first fixed frame, and the second L-shaped plate will push the U-shaped frame to move downward during operation.

[0011] Preferably, the laser lifting mechanism includes a protective mechanism mounted on the lifting plate. The protective mechanism includes a first protrusion plate mounted on the first fixed frame, a second protrusion plate mounted on the first fixed frame, a transverse sliding plate slidably mounted on the lifting plate, a force-bearing plate mounted on the transverse sliding plate, and a wiping plate mounted on the transverse sliding plate. The wiping plate is used to wipe away dust from the laser measuring instrument.

[0012] Preferably, the protective mechanism further includes a second elastic rod installed on the lifting plate and a partition installed on the second elastic rod.

[0013] Preferably, the surface of the second elastic rod is provided with a spring, and the partition is used to apply compressive force to the plate while preventing the laser measuring device from contacting the plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, when thickness measurement of building decorative panels is required, the position of the laser probe can be adjusted synchronously according to the specifications of the building decorative panels and changes in the incoming material height. This ensures that the distance measurement range between the laser measuring device and the upper surface of the measured decorative panel is always within the optimal measurement range of the sensor, avoiding data loss and measurement failure due to exceeding the effective distance measurement range. Simultaneously, it is compatible with the detection of building decorative panels of various thicknesses, eliminating the need for manual adjustment during machine downtime. After the laser measuring device is adjusted to the appropriate range, it emits a laser to detect the thickness of the panel. During detection, it ensures that panels of various specifications are in a horizontal position, preventing downward pressure on the conveyor belt on the conveyor table due to excessive panel weight, thus preventing damage to the panel. Bending affects the measurement results of the board. By ensuring that the board is kept horizontal during thickness detection, it is possible to effectively avoid the false thickness measurement value caused by the oblique incidence of the laser when the board is tilted. This ensures that the laser beam acts perpendicularly on the surface of the board being measured, obtaining the true vertical thickness of the board. It also prevents the misalignment of the upper and lower measuring points due to the tilt of the board, greatly improving the accuracy and stability of thickness detection. At the same time, it stabilizes the laser reflection path, reduces data jumps caused by board warping and conveyor jitter, reduces false alarms in thickness detection, unifies the board detection benchmark, reduces the pressure on the control system algorithm compensation, and can also suppress board deviation and warping, reduce conveyor jamming failures, and ensure continuous and stable online detection of the building decoration board production line.

[0015] 2. In this invention, during the thickness measurement of the sheet metal, the rotating wheel on the guide arc plate centers the sheet metal, ensuring it remains in the center of the conveying channel. This ensures the laser spot stably illuminates the flat area in the center of the sheet metal, preventing the sheet metal from deviating and causing the measuring point to fall on the chamfer or edge of the sheet metal. This eliminates measurement errors caused by edge effects, ensures the horizontal alignment of the upper and lower laser measuring points, improves the accuracy of sheet metal thickness calculation, effectively prevents lateral deviation of the sheet metal, reduces lateral extrusion and jamming failures, and ensures continuous and stable conveying of the sheet metal. During testing, the raised and warped parts of the sheet metal are flattened, making the sheet metal closely fit the reference parallel plate. This effectively suppresses the vertical bouncing of the sheet metal during high-speed conveying, stabilizes the horizontal posture of the sheet metal, ensures the laser is perpendicularly incident on the sheet metal surface, avoids measurement errors caused by sheet tilt, reduces data fluctuations, lowers the probability of false measurements, and the downward pressure constraint prevents the sheet metal from tilting to one side. Combined with the centering guide, this improves the stability of the sheet metal conveying.

[0016] 3. In this invention, during the downward movement of the laser measuring device, the dust adhering to the laser emission port can be processed. This timely cleaning of dust adhering to the laser emission port prevents dust scattering and blocking of the laser beam, avoiding light spot deformation and light intensity attenuation that could cause thickness detection data drift and jumps, thus improving measurement stability. It effectively prevents dust from solidifying and forming scale on the surface of the optical lens, protecting the laser sensor lens and extending the equipment's service life. It enables online dust removal, eliminating the need for production line shutdown and manual wiping, reducing maintenance workload. It also prevents large amounts of dust from accumulating and blocking the optical path, thus preventing detection failure. This allows the laser thickness measuring device to adapt to the high-dust environment of the decorative panel production line, ensuring continuous and reliable online detection of panel thickness. At the same time, it prevents the panel from contacting the laser measuring device, blocking production dust, panel debris, and detached contaminants from flying towards the laser measuring device, slowing down the contamination rate of the laser optical window, reducing dust interference with the laser optical path, forming a physical protective barrier, and preventing warped or shifting panels from directly impacting the laser sensor. This effectively protects precision measuring components, extends the equipment maintenance cycle, and ensures long-term stable operation of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the movable rod and the movable plate of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the position structure of the hinge plate and the force-bearing rod of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the structure at point B in the middle; Figure 6This is a schematic diagram of the positional structure of the inclined block and triangular block of the present invention; Figure 7 This is a schematic diagram of the position structure of the elastic rod 2 and the partition plate of the present invention.

[0018] The meanings of the labels in the diagram are as follows: 1. Conveyor table; 2. Fixing frame one; 3. Servo motor; 4. Threaded rod; 5. Lifting plate; 6. Laser measuring instrument; 7. Moving rod one; 8. Moving plate; 9. Elastic rod one; 10. Push plate; 11. Reference parallel plate; 12. L-shaped plate one; 13. Inclined plate; 14. Lower pressure plate; 15. Guide calibration mechanism; 151. L-shaped plate two; 152. Fixing frame two; 153. Fixing plate; 154. Hinge plate; 155. 156. Load-bearing rod; 157. U-shaped frame; 158. Moving rod II; 159. Guide arc plate; 150. L-shaped hollow plate; 1510. Sliding rod; 1511. Inclined block; 1512. Triangular block; 1513. Pressure plate; 16. Protective mechanism; 161. Protrusion plate I; 162. Protrusion plate II; 163. Horizontal sliding plate; 164. Load-bearing plate; 165. Wiping plate; 166. Elastic rod II; 167. Partition plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please see Figures 1-7 One embodiment of the present invention is: an online thickness laser measuring device for a building decoration material production line, comprising a conveyor table 1, a fixed frame 2 mounted on the conveyor table 1, and a servo motor 3 mounted on the fixed frame 2. The online thickness laser measuring device for a building decoration material production line further includes: The laser lifting mechanism is installed on the fixed frame 12. The synchronous lifting mechanism of the laser head is used to achieve compatible measurement of multi-specification plates. The laser lifting mechanism includes a threaded rod 4 installed at the output end of the servo motor 3, a lifting plate 5 installed on the threaded rod 4, and a laser measuring device 6 installed on the lifting plate 5. The downward movement of the lifting plate 5 will cause the laser measuring device 6 to move downward. A horizontal alignment mechanism is installed on the conveyor 1. The horizontal alignment mechanism is used to avoid laser thickness measurement errors caused by the tilt of the plate and to improve measurement accuracy.

[0021] The horizontal alignment mechanism includes a movable rod 7 mounted on the conveyor table 1, a movable plate 8 mounted on the movable rod 7, an elastic rod 9 mounted on the movable plate 8 by a spring, a push plate 10 mounted on the elastic rod 9, a reference parallel plate 11 mounted on the push plate 10, an L-shaped plate 12 mounted on the movable plate 8, an inclined plate 13 fixedly mounted on the L-shaped plate 12, and a lower pressure plate 14 mounted on the lifting plate 5. The movement of the inclined plate 13 will drive the L-shaped plate 12 to move synchronously. Among them, the laser measuring device 6 is used to detect the thickness of the plate by laser, and the reference parallel plate 11 is used to ensure that the plate is on the same horizontal line.

[0022] The surface of the moving rod 7 is equipped with a spring. During operation, the lower pressure plate 14 will push the inclined plate 13 to move by the squeezing force. The lifting plate 5 moves downward, which will drive the lower pressure plate 14 to move downward. The lower pressure plate 14 is equipped with rollers. The push plate 10 is used to position and fix the plate.

[0023] In this embodiment, during operation: when thickness measurement of the board material is required, the conveyor 1 starts, moving the board material from left to right to the detection area. Subsequently, the servo motor 3 starts, rotating the threaded rod 4. The rotation of the threaded rod 4, through a threaded groove on its surface, moves the lifting plate 5 downwards. The downward movement of the lifting plate 5 moves the laser measuring device 6 downwards, allowing adjustment of the distance between the laser measuring device 6 and the board material. The laser probe position can be adjusted synchronously according to the specifications of the building decoration board material and changes in the material's height, ensuring that the distance measurement range between the laser measuring device 6 and the upper surface of the measured decorative board material is always within the sensor's optimal measurement range. This avoids exceeding the effective measurement range, preventing data loss and measurement failure. Simultaneously, it is compatible with various thickness specifications of building decoration board materials. The inspection of decorative panels requires no manual adjustment or downtime. After the laser measuring device 6 is adjusted to the appropriate range, it emits a laser to detect the thickness of the panel. During inspection, the lifting plate 5 moves downward, causing the lower pressure plate 14 to move downward. The lower pressure plate 14 moves downward, causing the surface rollers to move downward. The rollers then contact the inclined plate 13 and exert pressure on it, forcing the inclined plate 13 to move forward. The movement of the inclined plate 13 causes the L-shaped plate 12 to move synchronously. The movement of the L-shaped plate 12 then causes the moving plate 8 to move in the same direction. The movement of the moving plate 8 causes the moving rod 7 to move. During the movement of the moving rod 7, the surface spring is compressed. The movement of the moving plate 8 synchronously causes the elastic rod 9 to move. The movement of the elastic rod 9 causes the push plate 10 to move, which in turn moves the reference parallel plate 11. During this movement, the reference parallel plate 11 comes into contact with the sheet material, and the inclined surface on the reference parallel plate 11 presses the sheet material against its surface. This ensures that sheets of various specifications are kept horizontal, preventing the sheet material from bending due to excessive weight and putting downward pressure on the conveyor belt of the conveyor table 1, which would affect the measurement results. By ensuring that the sheet material is kept horizontal during thickness measurement, it is possible to effectively avoid false thickness measurements caused by oblique laser incidence when the sheet material is tilted. This ensures that the laser beam acts perpendicularly on the surface of the sheet material being measured, obtaining the true vertical thickness of the sheet material and preventing errors caused by sheet material tilting. This causes misalignment of the upper and lower measuring points, significantly improving the accuracy and stability of thickness detection. At the same time, it stabilizes the laser reflection optical path, reduces data jumps caused by board warping and conveyor jitter, reduces false alarms in thickness detection, unifies the board detection benchmark, reduces the pressure on the control system algorithm compensation, and can also suppress board deviation and warping, reduce conveyor jamming failures, and ensure continuous and stable online detection of the building decoration board production line. After the board is at the top of the benchmark parallel plate 11, the moving plate 8 will continue to move, so that the pushing plate 10 contacts the board and can drive the board to move towards the center, thereby improving the accuracy of board detection. After the board is in the center position, the pushing plate 10 will be subjected to the reverse extrusion force of the board, causing the elastic rod 9 to move backward relative to the moving plate 8.

[0024] Example 2: Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, the laser lifting mechanism includes a guide calibration mechanism 15 mounted on the lifting plate 5. The guide calibration mechanism 15 includes an L-shaped plate 151 mounted on the lifting plate 5, a fixed frame 152 mounted on the conveyor table 1, a fixed plate 153 mounted on the fixed frame 152, a hinge plate 154 mounted on the fixed plate 153, a force rod 155 mounted on the hinge plate 154, the force rod 155 moving downward will drive the hinge plate 154 to move downward, a U-shaped frame 156 mounted on the force rod 155, a moving rod 157 mounted on the fixed plate 153 by a spring, and a guide arc plate 158 mounted on the moving rod 157. The force rod 155 moving downward will drive the hinge plate 154 to move downward, and the fixed plate 153 moving backward will drive the moving rod 157 to move backward. Among them, the guide arc plate 158 is used to guide the plate. The guide arc plate 158 is equipped with a rotating wheel. The moving rod 157 will drive the guide arc plate 158 to move backward.

[0025] The guide calibration mechanism 15 also includes an L-shaped cutout plate 159 mounted on the movable plate 8, a sliding rod 1510 mounted on the L-shaped cutout plate 159 by a spring, a chamfered block 1511 mounted on the elastic rod 9, a triangular block 1512 mounted on the sliding rod 1510, and a pressure plate 1513 mounted on the sliding rod 1510. The downward movement of the sliding rod 1510 will cause the pressure plate 1513 to move downward. The pressure plate 1513 is used to apply downward pressure to the plate to prevent bending of the plate and thus avoid affecting the measurement structure.

[0026] The inclined block 1511 and the triangular block 1512 are in contact with each other. During operation, the inclined block 1511 will drive the triangular block 1512 to move downward through the squeezing force. The L-shaped hollow plate 159 is in contact with the pressure plate 1513. The downward movement of the pressure plate 1513 will apply downward pressure to the plate. The U-shaped frame 156 is slidably connected to the fixed frame 12. During operation, the L-shaped plate 21 will push the U-shaped frame 156 to move downward.

[0027] In this embodiment, during the plate thickness measurement process, the downward movement of the lifting plate 5 causes the L-shaped plate 151 to move downward. During this downward movement, the L-shaped plate 151 contacts the U-shaped frame 156 and pushes it downward. The downward movement of the U-shaped frame 156 causes the force-bearing rod 155 to move downward. This downward movement of the force-bearing rod 155 causes the hinge plate 154 to move downward, applying a backward pushing force to the fixed plate 153, forcing the fixed plate 153 to move backward. This backward movement of the fixed plate 153 causes the moving rod 157 to move backward. During the process, the springs on the surface of the fixed plate 153 are stretched. Then, the moving rod 157 will drive the guide arc plate 158 to move backward, so that the guide arc plate 158 moves to the edge of the conveyor table 1. After the thickness measurement is completed, the moving rod 157 will be reset by the contraction of the surface spring, and the guide arc plate 158 will be reset synchronously. At this time, the conveyor table 1 will move the plate to the detection area. During the movement, the plate will come into contact with the guide arc plate 158, and the guide arc plate 158 and the rollers on the guide arc plate 158 will guide the plate to the center, so that the plate always stays in the center of the conveying channel. This ensures that the laser spot stably illuminates the flat area in the center of the board, preventing the measuring point from falling on the chamfer or edge of the board due to board deviation, eliminating measurement errors caused by edge effects, ensuring lateral alignment of the upper and lower laser measuring points, improving the accuracy of board thickness calculation, effectively preventing lateral board offset, reducing lateral extrusion and jamming failures, and ensuring continuous and stable board conveying. During subsequent testing, the elastic rod 9 moves backward, causing the tilting block 1511 to move backward. The tilting block 1511 moves backward and contacts the triangular block 1512, applying downward pressure to the triangular block 1512, causing the triangular block 1512 to move downward. As the plate moves, the downward movement of the triangular block 1512 causes the sliding rod 1510 to move downward, which in turn causes the pressure plate 1513 to move downward. The downward movement of the pressure plate 1513 applies downward pressure to the plate, flattening any arched or warped parts of the plate and ensuring that the plate fits tightly against the reference parallel plate 11. This effectively suppresses the vertical bouncing of the plate during high-speed transport, stabilizes the plate's horizontal posture, ensures that the laser is perpendicularly incident on the plate surface, avoids measurement errors caused by plate tilting, reduces fluctuations in detection data, and lowers the probability of false detections. The downward pressure constraint prevents the plate from tilting or deviating to one side, and, in conjunction with the centering guide, improves the stability of the plate transport.

[0028] Example 3: Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, the laser lifting mechanism includes a protective mechanism 16 installed on the lifting plate 5. The protective mechanism 16 includes a first protrusion plate 161 installed on the first fixed frame 2, a second protrusion plate 162 installed on the first fixed frame 2, a transverse sliding plate 163 slidably installed on the lifting plate 5, a force plate 164 installed on the transverse sliding plate 163, and a wiping plate 165 installed on the transverse sliding plate 163. When the transverse sliding plate 163 moves downward, it will drive the force plate 164 to move downward synchronously. The wiping plate 165 is used to wipe the dust off the laser measuring device 6. During the movement of the wiping plate 165, it will come into contact with the laser emission port at the bottom of the laser measuring device 6.

[0029] The protective mechanism 16 also includes a second elastic rod 166 installed on the lifting plate 5 and a partition 167 installed on the second elastic rod 166. The second elastic rod 166 moves downward and causes the partition 167 to move downward. The surface of the second elastic rod 166 is provided with a spring. The partition 167 is used to apply pressure to the plate while preventing the laser measuring device 6 from contacting the plate. The partition 167 can create a barrier between the plate and the laser measuring device 6.

[0030] In this embodiment, during the downward movement of the laser measuring device 6, the lifting plate 5 drives the horizontal sliding plate 163 to move downward. The downward movement of the horizontal sliding plate 163 causes the force plate 164 to move downward synchronously. During this downward movement, the force plate 164 contacts the second protrusion plate 162 and applies pressure to the force plate 164 through the arc-shaped surface on the second protrusion plate 162, forcing the force plate 164 to move backward. This backward movement of the force plate 164 causes the horizontal sliding plate 163 to move synchronously. The movement of plate 63 will cause the wiping plate 165 to move. Conversely, after the force plate 164 contacts the protrusion plate 161, the force plate 164 will move in the opposite direction. During the movement of the wiping plate 165, it will contact the laser emission port at the bottom of the laser measuring device 6, thereby removing the dust attached to the laser emission port. This can promptly clean the dust attached to the laser emission port, prevent dust scattering and blocking of the laser beam, avoid spot deformation and light intensity attenuation that cause thickness detection data drift and jump, improve measurement stability, and effectively prevent dust. The process solidifies scale on the surface of the optical lens, protecting the laser sensor lens, extending the equipment's lifespan, and enabling online dust removal without requiring production line shutdowns for manual wiping, reducing maintenance workload. It also prevents excessive dust accumulation from blocking the optical path and causing detection failure, allowing the laser thickness measuring device to adapt to the high-dust environment of decorative panel production lines, ensuring continuous and reliable online detection of panel thickness. Simultaneously, the downward movement of the lifting plate 5 causes the elastic rod 166 to move downwards, which in turn causes the partition plate 167 to move downwards. When the laser measuring device 6 is too close to the panel, the partition plate 167 creates a barrier between the panel and the laser measuring device 6, preventing contact. This blocks production dust, panel debris, and detached contaminants from flying towards the laser measuring device 6, slowing down the contamination rate of the laser optical window, reducing dust interference with the laser optical path, and forming a physical protective barrier. This prevents warped or shifting panels from directly impacting the laser sensor, effectively protecting precision measuring components, extending equipment maintenance cycles, and ensuring long-term stable operation of the device.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thickness online laser measuring device for a building decoration material production line, comprising a conveyor table (1), a fixed frame (2) mounted on the conveyor table (1), and a servo motor (3) mounted on the fixed frame (2), characterized in that, The online thickness laser measurement device for the building decoration material production line also includes: A laser lifting mechanism is installed on the fixed frame (2). The laser head synchronous lifting mechanism is used to realize the compatible measurement of multi-specification plates. The laser lifting mechanism includes a threaded rod (4) installed at the output end of the servo motor (3), a lifting plate (5) installed on the threaded rod (4), and a laser measuring device (6) installed on the lifting plate (5). A horizontal alignment mechanism is installed on the conveyor table (1). The horizontal alignment mechanism is used to avoid the laser thickness measurement error caused by the tilt of the plate and to improve the measurement accuracy.

2. The online laser thickness measurement device for building decoration material production line according to claim 1, characterized in that: The horizontal alignment mechanism includes a moving rod (7) mounted on the conveyor (1), a moving plate (8) mounted on the moving rod (7), an elastic rod (9) mounted on the moving plate (8) by a spring, a push plate (10) mounted on the elastic rod (9), a reference parallel plate (11) mounted on the push plate (10), an L-shaped plate (12) mounted on the moving plate (8), an inclined plate (13) fixedly mounted on the L-shaped plate (12), and a lower pressure plate (14) mounted on the lifting plate (5). The laser measuring device (6) is used to detect the thickness of the plate by laser, and the reference parallel plate (11) is used to ensure that the plate is on the same horizontal line.

3. The online laser thickness measurement device for building decoration material production line according to claim 2, characterized in that: The surface of the moving rod (7) is provided with a spring. During operation, the lower pressure plate (14) will push the inclined plate (13) to move by the squeezing force. The lower pressure plate (14) is equipped with rollers. The push plate (10) is used to position and fix the plate.

4. The online laser thickness measurement device for building decoration material production line according to claim 2, characterized in that: The laser lifting mechanism includes a guide calibration mechanism (15) installed on the lifting plate (5). The guide calibration mechanism (15) includes an L-shaped plate (151) installed on the lifting plate (5), a fixed frame (152) installed on the conveyor (1), a fixed plate (153) installed on the fixed frame (152), a hinge plate (154) installed on the fixed plate (153), a force rod (155) installed on the hinge plate (154), a U-shaped frame (156) installed on the force rod (155), a moving rod (157) installed on the fixed plate (153) by a spring, and a guide arc plate (158) installed on the moving rod (157). The guide arc plate (158) is used to guide the plate, and a rotating wheel is installed on the guide arc plate (158).

5. The online laser thickness measurement device for building decoration material production line according to claim 4, characterized in that: The guide calibration mechanism (15) further includes an L-shaped hollow plate (159) mounted on the movable plate (8), a sliding rod (1510) mounted on the L-shaped hollow plate (159) by a spring, a chamfered block (1511) mounted on the elastic rod (9), a triangular block (1512) mounted on the sliding rod (1510), and a pressure plate (1513) mounted on the sliding rod (1510). The pressure plate (1513) is used to apply downward pressure to the plate to prevent the plate from bending and affecting the measurement structure.

6. The online laser thickness measurement device for building decoration material production line according to claim 5, characterized in that: The inclined block (1511) and the triangular block (1512) are in contact with each other. During operation, the inclined block (1511) will drive the triangular block (1512) to move downward through the squeezing force. The L-shaped hollow plate (159) and the pressure plate (1513) are in contact with each other. The U-shaped frame (156) is slidably connected to the first fixed frame (2). During operation, the second L-shaped plate (151) will push the U-shaped frame (156) to move downward.

7. The online laser thickness measurement device for building decoration material production line according to claim 6, characterized in that: The laser lifting mechanism includes a protective mechanism (16) installed on the lifting plate (5). The protective mechanism (16) includes a first protrusion plate (161) installed on the first fixed frame (2), a second protrusion plate (162) installed on the first fixed frame (2), a transverse sliding plate (163) slidably installed on the lifting plate (5), a force plate (164) installed on the transverse sliding plate (163), and a wiping plate (165) installed on the transverse sliding plate (163). The wiping plate (165) is used to wipe away dust on the laser measuring instrument (6).

8. The online laser thickness measurement device for building decoration material production line according to claim 7, characterized in that: The protective mechanism (16) also includes a second elastic rod (166) installed on the lifting plate (5) and a partition (167) installed on the second elastic rod (166).

9. The online laser thickness measurement device for building decoration material production line according to claim 8, characterized in that: The surface of the second elastic rod (166) is provided with a spring, and the partition (167) is used to apply compressive force to the plate while preventing the laser measuring device (6) from contacting the plate.

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