A galvanized sheet laser thickness measuring device and thickness measuring method

Abstract

The application relates to the technical field of galvanized plate laser thickness measurement, in particular to a galvanized plate laser thickness measurement device and a thickness measurement method, which comprise a base, the upper side of the base is fixedly installed with an overhead frame, the overhead frame is fixedly installed with a detection table, the inner wall of the detection table is fixedly installed with a fixing assembly, one side of the detection table is provided with a first moving opening, the first moving opening is slidably installed with a thickness measurement assembly, and the upper and lower sides of the detection table are fixedly installed with stable sliding rods; the second driving threaded rod is driven to rotate by the cleaning motor output end, the second driving threaded rod drives the cleaning moving block to move, the cleaning moving block drives the corresponding cleaning boxes to move horizontally through two transmission rods, the two driving blocks drive the corresponding reciprocating frames to reciprocate, the cleaning scrapers are dislocated and scraped at high frequency, and thus the oxide layer on the surface of the galvanized plate is cleaned, and the thickness measurement data accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of laser thickness measurement technology for galvanized steel sheets, specifically to a laser thickness measurement device and method for galvanized steel sheets. Background Technology

[0002] Galvanized steel sheet is a common metal material, which is a metal material with a layer of zinc coated on the surface of steel sheet. Its main purpose is to prevent steel from rusting and corroding, thereby extending its service life. It is a widely used anti-corrosion steel material in industry, which has both strength and oxidation resistance and has a wide range of applications. When evaluating the quality of galvanized steel sheet, its thickness needs to be measured, and a laser thickness measuring device is required for the thickness measurement.

[0003] In existing technologies, when using lasers to measure the thickness of galvanized sheets, the sheets are typically placed directly on the measuring platform of a laser thickness gauge. The thickness is measured by simultaneously moving the laser on both the upper and lower sides. However, the condition and quality of the galvanized sheets vary during the actual measurement process. If a galvanized sheet that has been left unused for a long time is being tested, its surface may react with oxygen and water vapor in the air to form oxide layers such as zinc oxide or zinc carbonate. These oxide layers increase the surface roughness and reduce the reflectivity of the galvanized sheet, weakening or abnormally scattering the laser signal, resulting in abnormally high test data and measurement errors. Summary of the Invention

[0004] The purpose of this invention is to provide a laser thickness measuring device and method for galvanized steel sheets to solve the problems mentioned in the background art.

[0005] The technical solution of the present invention is: a laser thickness measuring device and method for galvanized sheet, including a base, an overhead frame fixedly installed on the upper side of the base, a detection table fixedly installed on the overhead frame, a fixing component fixedly installed on the inner wall of the detection table, a primary moving port opened on one side of the detection table, a thickness measuring component slidably installed in the primary moving port, and stabilizing slide rods fixedly installed on both the upper and lower sides of the detection table, with a cleaning component slidably installed on the surface of the stabilizing slide rods;

[0006] The cleaning assembly includes two cleaning boxes. A stabilizing lug is fixedly installed on one side of each cleaning box, and the stabilizing lug is slidably mounted on the surface of a stabilizing slide rod. Two reciprocating frames are slidably installed on the inner wall of each cleaning box. A cleaning scraper is fixedly installed on the lower side of each of the two reciprocating frames, and multiple cleaning blades are fixedly installed on the lower side of each of the two reciprocating frames. A drive block is fixedly installed on the upper side of each of the two reciprocating frames. A rotating hole is opened on one side of each cleaning box, and a primary rotating rod is rotatably installed within the rotating hole. A drive disk is fixedly installed on the surface of the primary rotating rod, and the surface of the drive disk is attached to the drive block. A secondary moving port is opened on the upper side of the testing platform, and a drive unit is slidably installed within the secondary moving port. An air blowing unit is fixedly installed on the inner wall of the cleaning box.

[0007] Preferably, the air blowing unit includes multiple fan blades, multiple mounting brackets are fixedly installed on the inner wall of the cleaning box, and fan blades are rotatably mounted on the mounting brackets via rotating shafts. A secondary bevel gear is fixedly installed on the lower side of the fan blades, and a primary bevel gear is fixedly installed on the surface of the primary rotating rod. The primary bevel gear meshes with the secondary bevel gear. A sealing plate is fixedly installed on the inner wall of the cleaning box, and multiple nozzles are installed on the sealing plate. Air jets are opened on the surface of the nozzles, a conical block is fixedly installed on the inner bottom wall of the nozzles, and a primary one-way valve is installed on the nozzles.

[0008] Preferably, the air blowing unit further includes a U-shaped plate, which is fixedly installed on the inner wall of the cleaning box. A guide plate is fixedly installed on the inner wall of the cleaning box. Multiple suction tubes are fixedly installed on the guide plate. Multiple two-stage one-way valves are installed on the suction tubes. A filter plate is fixedly installed on the lower side of the guide plate.

[0009] Preferably, the air blowing unit further includes a secondary rotating rod, which is rotatably mounted on the inner wall of the cleaning box. Multiple primary bevel gears are fixedly mounted on the surface of the secondary rotating rod, and the primary bevel gears mesh with the secondary bevel gears. A drive wheel is fixedly mounted on one end of the primary rotating rod, and a transmission wheel is fixedly mounted on one end of the secondary rotating rod. The same transmission belt is fitted onto the surface of the transmission wheel and the surface of the rotating wheel.

[0010] Preferably, the drive unit includes a cleaning moving block slidably installed in a secondary moving port. A transmission rod is fixedly installed at one end of the primary rotating rod. One end of each of the two transmission rods is rotatably connected to one side of the cleaning moving block. A transmission gear is fixedly installed on the surface of each of the two transmission rods. A transmission rack is fixedly installed in the secondary moving port. The transmission gear meshes with the transmission rack. A secondary drive threaded rod is rotatably installed in the secondary moving port and extends out of one side of the testing platform. The cleaning moving block is screwed onto the surface of the secondary drive threaded rod. A cleaning motor is fixedly installed on one side of the testing platform. The output end of the cleaning motor is coaxially fixedly connected to one end of the secondary drive threaded rod.

[0011] Preferably, the fixing assembly includes multiple fixing shells, a baffle is fixedly installed on one side of each fixing shell, two lifting racks are slidably installed on the inner wall of each fixing shell, a fixing block is fixedly installed on one side of each of the two lifting racks, two rotating shafts are rotatably installed on the inner wall of each fixing shell, a fixing gear is fixedly installed at one end of each rotating shaft, the fixing gear meshes with the lifting rack, and a locking unit is fixedly installed on the surface of each of the two rotating shafts.

[0012] Preferably, the locking unit includes a worm gear, which is fixedly mounted on the surface of the rotating shaft. Two mounting holes are provided on one side of the detection platform. A fixing rod is rotatably mounted in each of the two mounting holes and passes through the interior of the fixing shell. Two worms are mounted on the fixing rods, and the worms mesh with the two worm gears.

[0013] Preferably, the thickness measuring component includes a thickness measuring moving block, which is slidably installed in a primary moving port. Two thickness measuring brackets are fixedly installed on one side of the thickness measuring moving block, and a thickness measuring laser is installed on each of the two thickness measuring brackets. A primary driving threaded rod is rotatably installed in the primary moving port and extends to one side of the detection table. The thickness measuring moving block is screwed onto the surface of the primary driving threaded rod. A thickness measuring motor is fixedly installed on one side of the detection table.

[0014] Preferably, a controller is fixedly installed on one side of the base. The controller is electrically connected to the thickness measuring motor, the thickness measuring laser, and the cleaning motor.

[0015] One of the above-mentioned laser thickness measurement methods for galvanized steel sheets includes the following steps:

[0016] S1. First, take out the galvanized sheet that needs to be measured and cut it into the predetermined size. Place the galvanized sheet on the inner wall of the testing table and fix it with the fixing components by manually rotating the two fixing rods. After fixing, use the controller to control the cleaning motor to clean the galvanized sheet.

[0017] S2. The output of the cleaning motor drives the drive unit to drive the upper and lower cleaning boxes of the galvanized sheet to move horizontally synchronously. At the same time, the two transmission rods rotate to drive the drive disk to rotate. The drive disk drives the two reciprocating frames to move back and forth through the drive block, thereby driving the two moving cleaning scrapers to move back and forth at high frequency to scrape off the oxide layer on the surface of the galvanized sheet. During the process of cleaning the cleaning box and resetting, the reverse action of multiple blades creates negative pressure inside the cleaning box to suck up and clean the debris, preventing it from affecting the thickness detection.

[0018] S3. After cleaning is completed, the cleaning motor is controlled by the controller to reset the cleaning box. At the same time, the thickness measuring component is started to measure the thickness of the cleaned galvanized sheet. After obtaining the data, the equipment is turned off. The two fixing rods are manually reversed to remove the galvanized sheet and complete the thickness detection.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The output of the cleaning motor drives the secondary drive screw rod to rotate, which in turn drives the cleaning moving block to move. The cleaning moving block drives the corresponding cleaning box to move horizontally through two transmission rods, moving the two cleaning boxes to the upper and lower sides of the galvanized sheet. The cleaning box drives the two reciprocating frames to move, and the two reciprocating frames drive the corresponding cleaning scrapers to move. At the same time, the transmission rod rotates synchronously under the action of the transmission gear and transmission rack. The transmission rod drives the primary rotating rod to rotate, and the primary rotating rod drives the drive disc to move. The drive disc simultaneously pushes the two drive blocks, and the two drive blocks drive the corresponding reciprocating frames to reciprocate, causing the cleaning scrapers to perform high-frequency staggered scraping, thereby cleaning the oxide layer on the surface of the galvanized sheet and improving the accuracy of thickness measurement data.

[0021] 2. The drive wheel drives the corresponding transmission wheel to rotate in the same direction via the transmission belt. The transmission wheel drives the secondary rotating rod to rotate synchronously. The primary and secondary rotating rods drive the corresponding secondary bevel gears to rotate. The secondary bevel gears drive the corresponding primary bevel gears to rotate. The primary bevel gears drive the corresponding fan blades to rotate, thereby causing multiple fan blades to rotate. This draws outside air into the cleaning box and sprays it out from the nozzle at the bottom of the cleaning box. This cleans the oxide residue remaining in the gaps of the cleaning scraper, preventing it from accumulating in the gaps and affecting cleaning, thus improving the reusability of the cleaning scraper.

[0022] 3. The output of the cleaning motor reverses, driving the cleaning moving block to move in the opposite direction. The transmission rod flips and drives the fan blades to flip through the relevant structure, creating negative pressure inside the cleaning box. At this time, an adsorption force is generated at the opening near the U-shaped plate at the bottom of the cleaning box, sucking the scraped oxide debris into the cleaning box. Under the action of the guide plate, the debris is guided to the lower side of the filter plate, and the U-shaped plate collects these debris, preventing the debris on the upper side of the galvanized plate from affecting the thickness detection. Attached Figure Description

[0023] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the detection station and its related structures in this invention;

[0026] Figure 3 This is a schematic diagram of the drive unit in this invention;

[0027] Figure 4 This is a cross-sectional structural diagram of the fixed shell in this invention;

[0028] Figure 5 This is a cross-sectional structural diagram of the cleaning box in this invention;

[0029] Figure 6 yes Figure 5 Enlarged structural diagram of region A in the middle;

[0030] Figure 7 This is a schematic diagram of the guide plate and its related structures in this invention;

[0031] Figure 8 This is a schematic diagram of the internal structure of the cleaning box in this invention;

[0032] Figure 9 This is a schematic diagram of the nozzle and its related structures in this invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Base; 2. Elevated frame; 3. Controller; 4. Detection table; 5. Fixed housing; 6. Baffle; 7. Primary drive threaded rod; 8. Thickness measuring moving block; 9. Thickness measuring motor; 10. Thickness measuring bracket; 11. Thickness measuring laser; 12. Cleaning box; 13. Cleaning motor; 14. Cleaning moving block; 15. Secondary drive threaded rod; 16. Transmission rack; 17. Fixed rod; 18. Stabilizing slide bar; 19. Transmission rod; 20. Transmission gear; 21. Fixed block; 22. Lifting rack; 23. Fixed gear; 24. Rotating shaft; 25. 26. Worm; 27. Reciprocating frame; 28. Cleaning scraper; 29. ​​Sealing plate; 30. Nozzle; 31. First-stage one-way valve; 32. First-stage rotating rod; 33. Guide plate; 34. Stabilizing lug; 35. Drive belt; 36. Second-stage rotating rod; 37. First-stage bevel gear; 38. Second-stage bevel gear; 39. Drive block; 40. Drive disc; 41. Conical block; 42. Fan blade; 43. Fixed frame; 44. Drive wheel; 45. Suction pipe; 46. Filter plate; 47. U-shaped plate; 48. Second-stage one-way valve; 49. Transmission wheel. Detailed Implementation

[0035] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention necessarily exceeds the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but still fall within the protection scope of this application.

[0036] Figures 1-9 This is the preferred embodiment of the present invention, which is described below in conjunction with the accompanying drawings. Figures 1-9 The present invention will be further described below.

[0037] like Figures 1-9 As shown, a laser thickness measuring device for galvanized sheet includes a base 1, an overhead frame 2 fixedly installed on the upper side of the base 1, a measuring table 4 fixedly installed on the overhead frame 2, a fixing component fixedly installed on the inner wall of the measuring table 4, a primary moving port opened on one side of the measuring table 4, a thickness measuring component slidably installed in the primary moving port, and stabilizing slide rods 18 fixedly installed on both the upper and lower sides of the measuring table 4, and a cleaning component slidably installed on the surface of the stabilizing slide rods 18.

[0038] The cleaning assembly includes two cleaning boxes 12. A stabilizing lug 34 is fixedly installed on one side of each cleaning box 12. The stabilizing lug 34 is slidably mounted on the surface of a stabilizing slide rod 18. Two reciprocating frames 27 are slidably installed on the inner wall of each cleaning box 12. A cleaning scraper is fixedly installed on the lower side of each of the two reciprocating frames 27. Multiple cleaning scraper strips 28 are fixedly installed on the lower side of each of the two reciprocating frames 27. A drive block 39 is fixedly installed on the upper side of each of the two reciprocating frames 27. A rotating hole is opened on one side of the cleaning box 12. A primary rotating rod 32 is rotatably installed in the rotating hole. A drive disk 40 is fixedly installed on the surface of the primary rotating rod 32. The surface of the drive disk 40 is attached to the drive block 39. A secondary moving port is opened on the upper side of the detection table 4. A drive unit is slidably installed in the secondary moving port. An air blowing unit is fixedly installed on the inner wall of the cleaning box 12.

[0039] Using the above structure, the base 1 suspends the inspection table 4 via the overhead frame 2. The inspection table 4 has an inspection port on its surface. A fixing component is installed at each of the four vertices of the inner wall of the inspection port. These four fixing components facilitate the fixation of the galvanized sheet, preventing displacement during cleaning and thickness measurement. Two cleaning boxes 12 in the cleaning assembly are installed symmetrically, one above the other. One side of the two cleaning boxes 12 in the same direction is slidably connected to the corresponding stabilizing slide rod 18 via a stabilizing lug 34, improving the stability of the cleaning box 12 during movement. Each cleaning box 12 has two identical reciprocating frames 27 slidably installed inside. The two reciprocating frames 27 are staggered, and their length is shorter than the internal length of the cleaning box 12. The reciprocating frame 27 moves inside the cleaning box 12. Cleaning scrapers 28 are installed at equal intervals on the same side of the two reciprocating frames 27. The cleaning scrapers 28 are made of metal and have a certain degree of toughness, which can scrape off the oxide layer on the surface of the galvanized sheet. There is a certain gap between the cleaning scrapers 28 on the two cleaning boxes 12 to provide a certain space for the galvanized sheet. A drive block 39 is installed on the upper side of each reciprocating frame 27. The drive block 39 is composed of two identical bonding plates. The drive disk 40 that is bonded to it has a certain tilt angle on its surface. When the drive disk 40 rotates, it will continuously horizontally squeeze the drive block 39 through the tilt angle, thereby causing the drive block 39 to perform horizontal reciprocating motion, and thus causing the two reciprocating frames 27 to perform staggered reciprocating motion.

[0040] Furthermore, the air blowing unit includes multiple fan blades 42, and multiple mounting brackets 43 are fixedly installed on the inner wall of the cleaning box 12. The fan blades 42 are rotatably mounted on the mounting brackets 43 via rotating shafts. A secondary bevel gear 38 is fixedly installed on the lower side of the fan blades 42, and a primary bevel gear 37 is fixedly installed on the surface of the primary rotating rod 32. The primary bevel gear 37 meshes with the secondary bevel gear 38. A sealing plate 29 is fixedly installed on the inner wall of the cleaning box 12, and multiple nozzles 30 are installed on the sealing plate 29. The surface of the nozzles 30 is provided with air jet openings, and a conical block 41 is fixedly installed on the inner bottom wall of the nozzles 30. A primary one-way valve 31 is installed on the nozzles 30.

[0041] With the above structure, four fan blades 42 are installed at equal intervals, and each fan blade 42 is equipped with a corresponding primary bevel gear 37 via a rotating shaft. The primary bevel gear 37 drives the fan blade 42 through the secondary bevel gear 38. In order to prevent the primary bevel gear 37 and the secondary bevel gear 38 from being affected by the debris generated during grinding, a protective shell needs to be installed on the primary bevel gear 37 and the secondary bevel gear 38 during use to protect the internal cleanliness of the primary bevel gear 37 and the secondary bevel gear 38. The sealing plate 29 is installed at the bottom of the cleaning box 12, and multiple nozzles 30 installed on its surface are located between two sets of cleaning scrapers 28. The two air jets opened on the surface of the nozzles 30 are oriented towards the cleaning scraper. At the gap position of strip 28, the conical block 41 installed on the bottom wall of the nozzle 30 can guide the gas in the nozzle 30 and increase the jet pressure in the jet port. The first-stage one-way valve 31 installed on the nozzle 30 extends from the upper side to the lower side of the cleaning box 12. Through the first-stage rotating rod 32, it drives the second-stage bevel gear 38 to rotate. The second-stage bevel gear 38 drives the corresponding first-stage bevel gear 37 to rotate. The first-stage bevel gear 37 drives the corresponding fan blade 42 to rotate, thereby causing multiple fan blades 42 to rotate, drawing the outside gas into the cleaning box 12 and spraying it out from the nozzle 30 at the bottom of the cleaning box 12. This cleans the oxide residue remaining in the gap of the cleaning scraper and prevents it from accumulating in the gap and affecting cleaning.

[0042] Furthermore, the air blowing unit also includes a U-shaped plate 47, which is fixedly installed on the inner wall of the cleaning box 12. A guide plate 33 is fixedly installed on the inner wall of the cleaning box 12. Multiple suction pipes 45 are fixedly installed on the guide plate 33. Multiple two-stage one-way valves 48 are installed on the suction pipes 45. A filter plate 46 is fixedly installed on the lower side of the guide plate 33.

[0043] With the above structure, the U-shaped plate 47 is installed at the bottom of the cleaning box 12, can be disassembled, and fits against one side of the reciprocating frame 27. The adsorption port formed by one side of the U-shaped plate 47 and the inner wall of the cleaning box 12 can adsorb the oxide debris generated during cleaning. The guide plate 33 consists of an inclined plate and a horizontal plate. The inclined plate is used to guide the debris. Multiple suction pipes 45 are installed at equal intervals on the horizontal plate. The secondary one-way valve 48 installed on the suction pipe 45 runs from the bottom to the top of the cleaning box 12. The filter plate 46 installed below the horizontal plate can filter the debris and prevent it from entering the interior of the cleaning box 12. After the adsorption force ends, the debris will be collected by the U-shaped plate 47. It should be noted that, due to the special structure of the cleaning box 12 on the lower side, there is no need to install the guide plate 33, suction pipes 45 and secondary one-way valve 48. The polished debris can directly pass through the cleaning box 12 and fall onto the base 1.

[0044] Furthermore, the air blowing unit also includes a secondary rotating rod 36, which is rotatably mounted on the inner wall of the cleaning box 12. Multiple primary bevel gears 37 are fixedly mounted on the surface of the secondary rotating rod 36, and the primary bevel gears 37 mesh with the secondary bevel gears 38. A drive wheel 44 is fixedly mounted on one end of the primary rotating rod 32, and a transmission wheel 49 is fixedly mounted on one end of the secondary rotating rod 36. The same transmission belt 35 is sleeved on the surface of the transmission wheel 49 and the surface of the rotating wheel.

[0045] With the above structure, the first-stage rotating rod 32 and the second-stage rotating rod 36, which are rotatably mounted on the inner wall of the cleaning box 12, are the same size. Four second-stage bevel gears 38 are installed at equal intervals on their surfaces. The number of these gears is consistent with the number of fan blades 42. The number of fan blades 42 can be appropriately increased or decreased according to the actual situation. The drive wheel 44 and the transmission belt 35 drive the transmission wheel 49 to rotate, thereby causing the additional set of fan blades 42 to rotate, thereby increasing the air intake or suction volume and enhancing the cleaning effect.

[0046] Furthermore, the drive unit includes a cleaning moving block 14, which is slidably installed in the secondary moving port. One end of the primary rotating rod 32 is fixedly installed with a transmission rod 19. One end of each of the two transmission rods 19 is rotatably connected to one side of the cleaning moving block 14. Transmission gears 20 are fixedly installed on the surfaces of the two transmission rods 19. A transmission rack 16 is fixedly installed in the secondary moving port, and the transmission gears 20 mesh with the transmission rack 16. A secondary drive threaded rod 15 is rotatably installed in the secondary moving port and extends out of one side of the detection platform 4. The cleaning moving block 14 is screwed onto the surface of the secondary drive threaded rod 15. A cleaning motor 13 is fixedly installed on one side of the detection platform 4, and the output end of the cleaning motor 13 is coaxially fixedly connected to one end of the secondary drive threaded rod 15.

[0047] With the above structure, two transmission rods 19 are rotatably mounted on one side of the cleaning moving block 14. The two transmission rods 19 drive the two cleaning boxes 12 respectively. A transmission gear 20 is mounted on the surface of each transmission rod 19 and meshes with two symmetrically mounted transmission gears 20 in the secondary moving port. When the cleaning moving block 14 is driven to move horizontally by the secondary drive threaded rod 15, the transmission gear 20 rotates through the transmission rack 16, providing driving force to the primary rotating rod 32 in the cleaning box 12. It should be noted that the rotation directions of the two transmission gears 20 are opposite. Therefore, the air intake direction of the fan blade 42 in the upper cleaning box 12 and the air intake direction of the fan blade 42 in the lower cleaning box 12 must be kept opposite, so that the upper and lower cleaning boxes 12 can simultaneously suck or blow air.

[0048] Furthermore, the fixing assembly includes multiple fixing shells 5. A baffle 6 is fixedly installed on one side of the fixing shell 5. Two lifting racks 22 are slidably installed on the inner wall of the fixing shell 5. A fixing block 21 is fixedly installed on one side of each of the two lifting racks 22. Two rotating shafts 24 are rotatably installed on the inner wall of the fixing shell 5. A fixing gear 23 is fixedly installed at one end of the rotating shaft 24. The fixing gear 23 meshes with the lifting rack 22. A locking unit is fixedly installed on the surface of each of the two rotating shafts 24.

[0049] With the above structure, four fixing shells 5 are respectively installed at the four vertices of the detection port, which facilitates the fixing of the four vertices of the galvanized sheet and enhances the stability of the fixing. Inside each fixing shell 5, two fixing blocks 21 are symmetrically installed vertically. Each fixing block 21 is equipped with a corresponding lifting rack 22, and each lifting rack 22 is equipped with a corresponding fixing gear 23. By rotating the two fixing gears 23 relative to each other at the same time, the two fixing gears 23 drive the corresponding lifting rack 22, thereby moving the two fixing blocks 21 closer to each other or further away, thus fixing the galvanized sheet.

[0050] Furthermore, the locking unit includes a worm gear 25, which is fixedly mounted on the surface of the rotating shaft 24. Two mounting holes are opened on one side of the detection table 4. A fixing rod 17 is rotatably mounted in each of the two mounting holes and passes through the interior of the fixing shell 5. Two worms 26 are mounted on the fixing rod 17, and the worms 26 mesh with the two worm gears 25.

[0051] With the above structure, the fixed gear 23 is equipped with a worm gear 25 via the rotating shaft 24. Two worm gears 25 are installed symmetrically in each fixed housing 5. A fixed rod 17 passes through the two fixed housings 5. Two worms 26 are installed on each fixed rod 17. One worm 26 drives the two worm gears 25 to move in opposite directions, thereby driving the two fixed blocks 21 to move closer or further away from each other.

[0052] Furthermore, the thickness measuring component includes a thickness measuring moving block 8, which is slidably installed in the first-stage moving port. Two thickness measuring brackets 10 are fixedly installed on one side of the thickness measuring moving block 8, and a thickness measuring laser 11 is installed on each of the two thickness measuring brackets 10. A first-stage drive threaded rod 7 is rotatably installed in the first-stage moving port and extends to one side of the detection table 4. The thickness measuring moving block 8 is screwed onto the surface of the first-stage drive threaded rod 7. A thickness measuring motor 9 is fixedly installed on one side of the detection table 4.

[0053] With the above structure, the thickness measuring moving block 8 and the cleaning moving block 14 are symmetrically installed. The two thickness measuring brackets 10 and the two cleaning boxes 12 installed on one side of the thickness measuring moving block 8 are on the same vertical plane, which can ensure that the residue generated on the galvanized plate will not fall onto the thickness measuring laser 11 during cleaning and affect the normal thickness detection. The thickness measuring laser 11 is existing technology. The two thickness measuring lasers 11 are on the same vertical plane. The output end of the thickness measuring motor 9 drives the first-stage drive threaded rod 7 to rotate. The first-stage drive threaded rod 7 drives the thickness measuring moving block 8 to move. The thickness measuring moving block 8 drives the two thickness measuring brackets 10 to move at the same time. By scanning the galvanized plate horizontally with the upper and lower thickness measuring lasers 11, the thickness of the galvanized plate can be monitored.

[0054] Furthermore, a controller 3 is fixedly installed on one side of the base 1. The controller 3 is electrically connected to the thickness measuring motor 9, the thickness measuring laser 11, and the cleaning motor 13.

[0055] With the above structure, the controller 3 can control electronic components such as the thickness measuring motor 9, the thickness measuring laser 11, and the cleaning motor 13. The controller 3 can also display the thickness data, which is convenient for the inspection personnel to record.

[0056] Working principle: When using the device, first take out the galvanized sheet to be measured and cut it to the predetermined size. Place the galvanized sheet between the four fixed shells 5 and position its upper and lower sides between the fixed blocks 21. Then, manually rotate the two fixed rods 17. The fixed rods 17 drive the worm gear 26 to rotate. One worm gear 26 drives two worm wheels 25 to rotate simultaneously. The two worm wheels 25 drive the corresponding fixed gears 23 to rotate through the rotating shaft 24, so that the two fixed gears 23 rotate relative to each other. The two fixed gears 23 drive the two lifting racks 22 to move. The two lifting racks 22 drive the two fixed blocks 21 to move closer to each other and squeeze the galvanized sheet, thereby completing the fixing of the galvanized sheet.

[0057] After fixing, the cleaning motor 13 is started by the controller 3. The output end of the cleaning motor 13 drives the secondary drive threaded rod 15 to rotate. The secondary drive threaded rod 15 drives the cleaning moving block 14 to move. The cleaning moving block 14 drives the corresponding cleaning box 12 to move horizontally through two transmission rods 19, so that the two cleaning boxes 12 move to the upper and lower sides of the galvanized plate. The cleaning box 12 drives the two reciprocating frames 27 to move. The two reciprocating frames 27 drive the corresponding cleaning scraper to move. At the same time, the transmission rod 19 rotates synchronously under the action of the transmission gear 20 and the transmission rack 16. The transmission rod 19 drives the primary rotating rod 32 to rotate. The primary rotating rod 32 drives the drive disk 40 to move. The drive disk 40 pushes the two drive blocks 39 at the same time. The two drive blocks 39 drive the corresponding reciprocating frames 27 to reciprocate, so that the cleaning scraper performs high-frequency staggered scraping, thereby scraping off the oxide layer on the surface of the galvanized plate.

[0058] During the scraping process, the first-stage rotating rod 32 drives the drive wheel 44 to rotate. The drive wheel 44 drives the corresponding transmission wheel 49 to rotate in the same direction through the transmission belt 35. The transmission wheel 49 drives the second-stage rotating rod 36 to rotate synchronously. The first-stage rotating rod 32 and the second-stage rotating rod 36 respectively drive the corresponding second-stage bevel gear 38 to rotate. The second-stage bevel gear 38 drives the corresponding first-stage bevel gear 37 to rotate. The first-stage bevel gear 37 drives the corresponding fan blade 42 to rotate, thereby causing multiple fan blades 42 to rotate, drawing external air into the cleaning box 12 and spraying it out from the nozzle 30 at the bottom of the cleaning box 12 to clean the oxide residue remaining in the gap of the cleaning scraper, preventing it from accumulating in the gap and affecting the cleaning.

[0059] When the cleaning box 12 moves to its maximum position, the output of the cleaning motor 13 starts to reverse. At this time, the cleaning moving block 14 is reset. During the reset, the transmission rod 19 flips and drives the fan blade 42 to flip through the related structure, so that a negative pressure is generated inside the cleaning box 12. At this time, an adsorption force is generated at the opening of the U-shaped plate 47 at the bottom of the cleaning box 12, which sucks the scraped oxide debris into the cleaning box 12. Under the action of the guide plate 33, the debris is guided to the lower side of the filter plate 46 and collected by the U-shaped plate 47 to prevent the debris on the upper side of the galvanized plate from affecting the thickness detection.

[0060] Repeat the above cleaning operation until the oxide layer on both sides of the galvanized sheet disappears. At this time, the controller 3 resets the cleaning box 12 and shuts off the cleaning motor 13, starts the thickness measuring motor 9, and drives the first-stage drive threaded rod 7 to rotate. The first-stage drive threaded rod 7 drives the thickness measuring moving block 8 to move. The thickness measuring moving block 8 simultaneously drives the two thickness measuring brackets 10 to move. The two thickness measuring brackets 10 simultaneously drive the two thickness measuring lasers 11 to sweep across the upper and lower sides of the galvanized sheet and transmit the detected thickness data to the controller 3, thereby completing the thickness detection of the galvanized sheet.

[0061] The present invention also provides a laser thickness measurement method for galvanized steel sheets, comprising the following steps:

[0062] S1. First, take out the galvanized sheet that needs to be measured and cut it into the predetermined size. Place the galvanized sheet on the inner wall of the testing table 4 and fix the galvanized sheet by manually rotating the two fixing rods 17. After fixing, use the controller 3 to control the cleaning motor 13 to clean the galvanized sheet.

[0063] S2. The output of the cleaning motor 13 drives the drive unit to drive the upper and lower cleaning boxes 12 of the galvanized sheet to move horizontally synchronously. At the same time, the two transmission rods 19 rotate to drive the drive disk 40 to rotate. The drive disk 40 drives the two reciprocating frames 27 to reciprocate through the drive block 39, thereby driving the two moving cleaning scrapers 28 to perform high-frequency reciprocating motion to scrape off the oxide layer on the surface of the galvanized sheet. During the process of cleaning the cleaning box 12 and resetting, the reverse action of multiple blades creates negative pressure inside the cleaning box 12 to suck up and clean the debris, preventing it from affecting the thickness detection.

[0064] S3. After cleaning is completed, the cleaning motor 13 is controlled by the controller 3 to reset the cleaning box 12. At the same time, the thickness measuring component is started to measure the thickness of the cleaned galvanized sheet. After obtaining the data, the equipment is turned off, the two fixing rods 17 are manually reversed, the galvanized sheet is removed, and the thickness detection is completed.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A laser thickness measuring device for galvanized steel sheets, comprising a base (1), characterized in that: An overhead frame (2) is fixedly installed on the upper side of the base (1). A testing platform (4) is fixedly installed on the overhead frame (2). A fixing component is fixedly installed on the inner wall of the testing platform (4). A primary moving port is opened on one side of the testing platform (4). A thickness measuring component is slidably installed in the primary moving port. A stabilizing slide rod (18) is fixedly installed on both the upper and lower sides of the testing platform (4). A cleaning component is slidably installed on the surface of the stabilizing slide rod (18). The cleaning assembly includes two cleaning boxes (12). A stabilizing ear (34) is fixedly installed on one side of each of the two cleaning boxes (12). The stabilizing ear (34) is slidably installed on the surface of the stabilizing slide bar (18). Two reciprocating frames (27) are slidably installed on the inner wall of the cleaning box (12). A cleaning scraper is fixedly installed on the lower side of each of the two reciprocating frames (27). Multiple cleaning scraper strips (28) are fixedly installed on the lower side of each of the two reciprocating frames (27). A drive block (39) is fixedly installed on the upper side of each of the two reciprocating frames (27). A rotating hole is opened on one side of the cleaning box (12). A primary rotating rod (32) is rotatably installed in the rotating hole. A drive disk (40) is fixedly installed on the surface of the primary rotating rod (32). The surface of the drive disk (40) is attached to the drive block (39). A secondary moving port is opened on the upper side of the detection platform (4). A drive unit is slidably installed in the secondary moving port. An air blowing unit is fixedly installed on the inner wall of the cleaning box (12). The air blowing unit includes multiple fan blades (42). Multiple fixing brackets (43) are fixedly installed on the inner wall of the cleaning box (12). The fan blades (42) are rotatably installed on the multiple fixing brackets (43) via rotating shafts. A secondary bevel gear (38) is fixedly installed on the lower side of the fan blades (42). A primary bevel gear (37) is fixedly installed on the surface of the primary rotating rod (32). The primary bevel gear (37) meshes with the secondary bevel gear (38). A sealing plate (29) is fixedly installed on the inner wall of the cleaning box (12). Multiple nozzles (30) are installed on the sealing plate (29). The surface of the nozzles (30) is provided with air jets. A conical block (41) is fixedly installed on the inner bottom wall of the nozzles (30). A primary one-way valve (31) is installed on the nozzles (30). The air blowing unit also includes a U-shaped plate (47), which is fixedly installed on the inner wall of the cleaning box (12). A guide plate (33) is fixedly installed on the inner wall of the cleaning box (12). Multiple suction tubes (45) are fixedly installed on the guide plate (33). Multiple two-stage one-way valves (48) are installed on the suction tubes (45). A filter plate (46) is fixedly installed on the lower side of the guide plate (33).

2. The laser thickness measuring device for galvanized steel sheets according to claim 1, characterized in that: The air blowing unit also includes a secondary rotating rod (36), which is rotatably mounted on the inner wall of the cleaning box (12). Multiple primary bevel gears (37) are fixedly mounted on the surface of the secondary rotating rod (36). The primary bevel gears (37) mesh with the secondary bevel gears (38). A drive wheel (44) is fixedly mounted on one end of the primary rotating rod (32), and a transmission wheel (49) is fixedly mounted on one end of the secondary rotating rod (36). The same transmission belt (35) is sleeved on the surface of the transmission wheel (49) and the surface of the drive wheel (44).

3. The laser thickness measuring device for galvanized steel sheets according to claim 1, characterized in that: The drive unit includes a cleaning moving block (14), which is slidably installed in the secondary moving port. One end of the primary rotating rod (32) is fixedly installed with a transmission rod (19). One end of each of the two transmission rods (19) is rotatably connected to one side of the cleaning moving block (14). Transmission gears (20) are fixedly installed on the surfaces of the two transmission rods (19). A transmission rack (16) is fixedly installed in the secondary moving port. The transmission gears (20) mesh with the transmission rack (16). A secondary driving threaded rod (15) is rotatably installed in the secondary moving port and extends out of one side of the detection platform (4). The cleaning moving block (14) is screwed onto the surface of the secondary driving threaded rod (15). A cleaning motor (13) is fixedly installed on one side of the detection platform (4). The output end of the cleaning motor (13) is coaxially fixedly connected to one end of the secondary driving threaded rod (15).

4. The laser thickness measuring device for galvanized steel sheets according to claim 1, characterized in that: The fixing assembly includes multiple fixing shells (5), a baffle (6) is fixedly installed on one side of the fixing shell (5), two lifting racks (22) are slidably installed on the inner wall of the fixing shell (5), a fixing block (21) is fixedly installed on one side of the two lifting racks (22), two rotating shafts (24) are rotatably installed on the inner wall of the fixing shell (5), a fixing gear (23) is fixedly installed at one end of the rotating shaft (24), the fixing gear (23) meshes with the lifting rack (22), and a locking unit is fixedly installed on the surface of the two rotating shafts (24).

5. The laser thickness measuring device for galvanized steel sheets according to claim 4, characterized in that: The locking unit includes a worm gear (25), which is fixedly installed on the surface of the rotating shaft (24). Two mounting holes are opened on one side of the detection platform (4). A fixing rod (17) is rotatably installed in each of the two mounting holes and passes through the interior of the fixing shell (5). Two worms (26) are installed on the fixing rod (17), and the worms (26) mesh with the two worm gears (25).

6. The laser thickness measuring device for galvanized steel sheets according to claim 4, characterized in that: The thickness measuring component includes a thickness measuring moving block (8), which is slidably installed in the first-stage moving port. Two thickness measuring brackets (10) are fixedly installed on one side of the thickness measuring moving block (8). A thickness measuring laser (11) is installed on each of the two thickness measuring brackets (10). A first-stage driving threaded rod (7) is rotatably installed in the first-stage moving port and extends to one side of the detection table (4). The thickness measuring moving block (8) is screwed onto the surface of the first-stage driving threaded rod (7). A thickness measuring motor (9) is fixedly installed on one side of the detection table (4).

7. The laser thickness measuring device for galvanized steel sheets according to claim 6, characterized in that: A controller (3) is fixedly installed on one side of the base (1). The controller (3) is electrically connected to the thickness measuring motor (9), the controller (3) is electrically connected to the thickness measuring laser (11), and the controller (3) is electrically connected to the cleaning motor (13).

8. A thickness measurement method for a laser thickness measuring device for galvanized steel sheets according to any one of claims 1-7, characterized in that: Includes the following steps: S1. First, take out the galvanized sheet that needs to be measured and cut it into the predetermined size. Place the galvanized sheet on the inner wall of the testing table (4) and fix the galvanized sheet by manually rotating the two fixing rods (17). After fixing, use the controller (3) to control the cleaning motor (13) to clean the galvanized sheet. S2. The output of the cleaning motor (13) drives the drive unit to drive the upper and lower cleaning boxes (12) of the galvanized plate to move horizontally synchronously. At the same time, the two transmission rods (19) rotate to drive the drive disk (40) to rotate. The drive disk (40) drives the two reciprocating frames (27) to reciprocate through the drive block (39), thereby driving the two moving cleaning scrapers (28) to reciprocate at high frequency to scrape off the oxide layer on the surface of the galvanized plate. During the process of cleaning the cleaning box (12) and resetting, the reverse action of multiple fan blades (42) generates negative pressure inside the cleaning box (12) to suck up and clean the debris, preventing it from affecting the thickness detection. S3. After cleaning is completed, the cleaning motor (13) is controlled by the controller (3) to reset the cleaning box (12), and the thickness measuring component is started at the same time to measure the thickness of the cleaned galvanized plate. After obtaining the data, the equipment is turned off, the two fixing rods (17) are manually reversed, the galvanized plate is removed, and the thickness detection is completed.

Images