Galvanized plate laser thickness measuring device and thickness measuring method

Abstract

The invention relates to the technical field of galvanized sheet laser thickness measurement, in particular to a galvanized sheet laser thickness measurement device and method, which comprises a base, an overhead frame is fixedly mounted on the upper side of the base, a detection table is fixedly mounted on the overhead frame, and a fixing assembly is fixedly mounted on the inner wall of the detection table. A first-stage moving opening is formed in one side of the detection table, a thickness measuring assembly is slidably installed in the first-stage moving opening, and stable sliding rods are fixedly installed on the upper side and the lower side of the detection table; the output end of a cleaning motor drives a secondary driving threaded rod to rotate, the secondary driving threaded rod drives a cleaning moving block to move, the cleaning moving block drives a corresponding cleaning box to horizontally move through two transmission rods, and two driving blocks drive a corresponding reciprocating frame to reciprocate. And the cleaning scraper performs high-frequency staggered scraping, so that an oxide layer on the surface of the galvanized sheet is cleaned, and the accuracy of thickness measurement data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of galvanized sheet laser thickness measurement, in particular to a galvanized sheet laser thickness measurement device and a thickness measurement method. Background Art

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

[0003] In the prior art, when using laser to measure the thickness of galvanized sheets, the galvanized sheets are usually placed directly on the thickness measuring table of the laser thickness gauge, and the thickness of the galvanized sheets is detected by simultaneously moving the upper and lower laser gauges. In the actual thickness measurement process, the state and quality of the galvanized sheets are different. If the galvanized sheets that have been shelved for a long time are tested, the surface of the galvanized sheets may react with oxygen and water vapor in the air to generate oxide layers such as zinc oxide or zinc carbonate. These oxide layers will increase the surface roughness of the galvanized sheets and reduce the reflectivity, causing the laser signal to weaken or scatter abnormally, thereby causing the test data to be abnormally high and the test to produce errors. Summary of the Invention

[0004] The object of the present invention is to provide a galvanized sheet laser thickness measuring device and thickness measuring method to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is: a galvanized sheet laser thickness measuring device and thickness measuring method, comprising a base, an overhead frame fixedly mounted on the upper side of the base, a detection platform fixedly mounted on the overhead frame, a fixing component fixedly mounted on the inner wall of the detection platform, a first-level movable opening opened on one side of the detection platform, a thickness measuring component slidably mounted in the first-level movable opening, stabilizing slide bars fixedly mounted on the upper and lower sides of the detection platform, and a cleaning component slidably mounted on the surface of the stabilizing slide bar; The cleaning assembly includes two cleaning bins. On one side of each of the two cleaning bins, a stabilizing ear is fixedly installed. The stabilizing ear is slidably installed on the surface of a stabilizing slide bar. Two reciprocating frames are slidably installed on the inner wall of the cleaning bin. On the lower sides of the two reciprocating frames, cleaning scrapers are fixedly installed. On the lower sides of the two reciprocating frames, a plurality of cleaning strips are fixedly installed. On the upper sides of the two reciprocating frames, driving blocks are fixedly installed. A rotating hole is formed on one side of the cleaning bin. A first-stage rotating rod is rotatably installed in the rotating hole. A driving disk is fixedly installed on the surface of the first-stage rotating rod. The surface of the driving disk is in contact with the driving block. A second-stage moving port is formed on the upper side of the detection table. A driving unit is slidably installed in the second-stage moving port. An air-blowing unit is fixedly installed on the inner wall of the cleaning bin.

[0006] Preferably, the air-blowing unit includes a plurality of wind blades. A plurality of fixing frames are fixedly installed on the inner wall of the cleaning bin. The wind blades are rotatably installed on the plurality of fixing frames through rotating shafts. A second-stage bevel gear is fixedly installed on the lower side of the wind blade. A first-stage bevel gear is fixedly installed on the surface of the first-stage rotating rod. The first-stage bevel gear meshes with the second-stage bevel gear. A sealing plate is fixedly installed on the inner wall of the cleaning bin. A plurality of nozzles are installed on the sealing plate. An air jet opening is formed on the surface of the nozzle. A conical block is fixedly installed on the inner bottom wall of the nozzle. A first-stage one-way valve is installed on the nozzle.

[0007] Preferably, the air-blowing unit further includes a U-shaped plate. The U-shaped plate is fixedly installed on the inner wall of the cleaning bin. A guiding plate is fixedly installed on the inner wall of the cleaning bin. A plurality of suction pipes are fixedly installed on the guiding plate. A plurality of second-stage one-way valves are installed on the suction pipes. A filter plate is fixedly installed on the lower side of the guiding plate.

[0008] Preferably, the air-blowing unit further includes a second-stage rotating rod. The second-stage rotating rod is rotatably installed on the inner wall of the cleaning bin. A plurality of first-stage bevel gears are fixedly installed on the surface of the second-stage rotating rod. The first-stage bevel gear meshes with the second-stage bevel gear. A driving wheel is fixedly installed at one end of the first-stage rotating rod. A transmission wheel is fixedly installed at one end of the second-stage rotating rod. The surface of the transmission wheel and the surface of the rotating wheel are sleeved with the same transmission belt.

[0009] Preferably, the driving unit includes a cleaning moving block which is slidably installed in the secondary moving port. One end of the primary rotating rod is fixedly installed with a transmission rod. One end of each of the two transmission rods is rotatably connected to one side of the cleaning moving block. Transmission gears are fixedly installed on the surfaces 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 driving threaded rod is rotatably installed in the secondary moving port and extends out of one side of the detection table. The cleaning moving block is screwed and installed on the surface of the secondary driving threaded rod. A cleaning motor is fixedly installed on one side of the detection table. The output end of the cleaning motor is coaxially and fixedly connected to one end of the secondary driving threaded rod.

[0010] Preferably, the fixing component includes a plurality of fixing shells. One side of the fixing shell is fixedly installed with a baffle. Two lifting racks are slidably installed on the inner wall of the fixing shell. Fixing blocks are correspondingly fixedly installed on one side of the two lifting racks. Two rotating shafts are rotatably installed on the inner wall of the fixing shell. A fixing gear is fixedly installed at one end of the rotating shaft. The fixing gear meshes with the lifting rack. Locking units are fixedly installed on the surfaces of the two rotating shafts.

[0011] Preferably, the locking unit includes a worm gear which is fixedly installed on the surface of the rotating shaft. Two mounting holes are formed in one side of the detection table. Fixing rods are rotatably installed in the two mounting holes and penetrate through the interior of the fixing shell. Two worm gears are installed on the fixing rods. The worm gears mesh with the two worm gears.

[0012] Preferably, the thickness measuring component includes a thickness measuring moving block which is slidably installed in the primary moving port. Two thickness measuring brackets are fixedly installed on one side of the thickness measuring moving block. Thickness measuring laser instruments are installed on 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 and installed on the surface of the primary driving threaded rod. A thickness measuring motor is fixedly installed on one side of the detection table.

[0013] 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 instrument and the cleaning motor.

[0014] A galvanized sheet laser thickness measuring method as described above includes the following steps: S1. First, take out the galvanized sheet to be measured for thickness, cut it into a predetermined size, place the galvanized sheet on the inner wall of the detection table, and manually rotate the two fixing rods to fix the galvanized sheet with the fixing component. After the fixing is completed, use the controller to control the cleaning motor to first clean the galvanized sheet. S2. The output end of the cleaning motor drives the driving unit to drive the upper and lower cleaning boxes of the galvanized sheet to perform synchronous horizontal movement. At the same time, the two transmission rods rotate to drive the driving disc to rotate. The driving disc drives the two reciprocating frames to reciprocate through the driving blocks, thereby driving the two moving cleaning strips to perform high-frequency reciprocating movement, scraping the oxide layer on the surface of the galvanized sheet. During the process of the cleaning box resetting after cleaning, negative pressure is generated inside the cleaning box through the reverse rotation of multiple blades to suck in and clean the debris, preventing it from affecting the thickness detection. S3. After cleaning, the controller controls the cleaning motor to reset the cleaning box. At the same time, the thickness measurement component is started to measure the thickness of the cleaned galvanized sheet. After obtaining the data, the equipment is shut down, and the two fixed rods are manually reversed to remove the galvanized sheet, completing the thickness detection.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The output end of the cleaning motor drives the secondary driving threaded rod to rotate. The secondary driving threaded rod drives the cleaning moving block to move. The cleaning moving block drives the corresponding cleaning box to perform horizontal movement through two transmission rods respectively, so that the two cleaning boxes move 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 rods perform synchronous self-rotation under the action of the transmission gears and transmission racks. The transmission rods drive the primary rotating rod to rotate, and the primary rotating rod drives the driving disc to move. The driving disc simultaneously pushes the two driving blocks, and the two driving blocks drive the corresponding reciprocating frames to reciprocate respectively, so that the cleaning scrapers perform high-frequency staggered scraping, thereby cleaning the oxide layer on the surface of the galvanized sheet and improving the accuracy of the thickness measurement data.

[0016] 2. The driving wheel drives the corresponding transmission wheel to rotate in the same direction through the transmission belt. The transmission wheel drives the secondary rotating rod to rotate synchronously. The primary rotating rod and the secondary rotating rod drive the corresponding secondary bevel gears to rotate respectively. The secondary bevel gears drive the corresponding primary bevel gears to rotate, and the primary bevel gears drive the corresponding wind blades to rotate, so that multiple wind blades rotate, sucking the external gas into the cleaning box and spraying it out from the nozzles at the bottom of the cleaning box to clean the residual oxide residues at the gaps of the cleaning scrapers, preventing them from accumulating at the gaps and affecting the cleaning, and improving the reusability of the cleaning scrapers.

[0017] 3. The reverse rotation of the output end of the cleaning motor drives the cleaning moving block to perform reverse movement. The transmission rod flips and drives the wind blade to flip through related structures, generating negative pressure inside the cleaning box. At this time, an adsorption force is generated at the opening at the bottom of the cleaning box near the U-shaped plate, sucking the scraped oxide debris into the cleaning box. Under the action of the guiding plate, the debris is guided to the lower side position of the filter plate, and the U-shaped plate collects these debris, preventing the debris on the upper side of the galvanized sheet from affecting the thickness detection. Description of the Drawings

[0018] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the detection table and its related structures in the present invention; Figure 3 is a schematic diagram of the structure of the driving unit in the present invention; Figure 4 is a schematic diagram of the sectional structure of the fixed housing in the present invention; Figure 5 is a schematic diagram of the sectional structure of the cleaning box in the present invention; Figure 6 is Figure 5 a schematic diagram of the enlarged structure of area A in Figure 7 is a schematic diagram of the guide plate and its related structures in the present invention; Figure 8 is a schematic diagram of the internal structure of the cleaning box in the present invention; Figure 9 is a schematic diagram of the nozzle and its related structures in the present invention.

[0019] Description of reference numerals: 1, base; 2, overhead frame; 3, controller; 4, detection table; 5, fixed housing; 6, baffle; 7, first-stage driving screw rod; 8, thickness measurement moving block; 9, thickness measurement motor; 10, thickness measurement support; 11, thickness measurement laser instrument; 12, cleaning box; 13, cleaning motor; 14, cleaning moving block; 15, second-stage driving screw rod; 16, transmission rack; 17, fixed rod; 18, stable sliding rod; 19, transmission rod; 20, transmission gear; 21, fixed block; 22, lifting rack; 23, fixed gear; 24, rotating shaft; 25, worm gear; 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, stable ear; 35, transmission belt; 36, second-stage rotating rod; 37, first-stage bevel gear; 38, second-stage bevel gear; 39, driving block; 40, driving disk; 41, conical block; 42, wind blade; 43, fixed frame; 44, driving wheel; 45, suction pipe; 46, filter plate; 47, U-shaped plate; 48, second-stage one-way valve; 49, transmission wheel. Specific embodiments

[0020] The present invention will be further described below in conjunction with specific embodiments. However, those skilled in the art should understand that the detailed description given here in conjunction with the accompanying drawings is for better explanation. The structure of the present invention necessarily goes beyond these limited embodiments, and for some equivalent replacement schemes or common means, no detailed description will be given herein, but they still fall within the protection scope of this application.

[0021] Figures 1 to 9 is the best embodiment of the present invention. The following will further describe the present invention in conjunction with the attached Figures 1 to 9 drawings.

[0022] As Figures 1 to 9 shown, a galvanized sheet laser thickness measuring device includes a base 1. An overhead frame 2 is fixedly installed on the upper side of the base 1. A detection table 4 is fixedly installed on the overhead frame 2. A fixing component is fixedly installed on the inner wall of the detection table 4. A first-level moving port is opened on one side of the detection table 4. A thickness measuring component is slidably installed in the first-level moving port. Stable sliding rods 18 are fixedly installed on both the upper and lower sides of the detection table 4. A cleaning component is slidably installed on the surface of the stable sliding rods 18; The cleaning component includes two cleaning boxes 12. Stable ears 34 are fixedly installed on one side of each of the two cleaning boxes 12. The stable ears 34 are slidably installed on the surface of the stable sliding rods 18. Two reciprocating frames 27 are slidably installed on the inner wall of the cleaning box 12. Cleaning scrapers are fixedly installed on the lower sides of the two reciprocating frames 27. A plurality of cleaning strips 28 are fixedly installed on the lower sides of the two reciprocating frames 27. Driving blocks 39 are fixedly installed on the upper sides of the two reciprocating frames 27. A rotating hole is opened on one side of the cleaning box 12. A first-level rotating rod 32 is rotatably installed in the rotating hole. A driving disk 40 is fixedly installed on the surface of the first-level rotating rod 32. The surface of the driving disk 40 is in contact with the driving block 39. A second-level moving port is opened on the upper side of the detection table 4. A driving unit is slidably installed in the second-level moving port. An air blowing unit is fixedly installed on the inner wall of the cleaning box 12.

[0023] With the above structure, the base 1 holds the test bench 4 in the air through the overhead frame 2. A test opening is provided on the surface of the test bench 4, and a fixing component is installed at each of the four vertex regions on the inner wall of the test opening. The four fixing components facilitate the fixing of the galvanized sheet and prevent it from shifting during cleaning and thickness measurement. The two cleaning boxes 12 in the cleaning component are symmetrically installed up and down. One side of the two cleaning boxes 12 in the same direction is slidably connected to the corresponding stabilizing slide bar 18 through a stabilizing ear 34, which improves the stability of the cleaning box 12 during movement. Two reciprocating frames 27 of the same size are slidably installed inside each cleaning box 12. The two reciprocating frames 27 are staggeredly installed, and the length of the reciprocating frame 27 is shorter than the length inside the cleaning box 12 to facilitate the movement of the reciprocating frame 27 inside the cleaning box 12. Cleaning scraper strips 28 are evenly spaced on the same side of the two reciprocating frames 27. The cleaning scraper strips 28 are made of metal and have a certain toughness, which can scrape the oxide layer on the surface of the galvanized sheet. There is a certain gap between the cleaning scraper strips 28 on the two cleaning boxes 12 to provide a certain space for the galvanized sheet. A driving block 39 is installed on the upper side of each reciprocating frame 27. The driving block 39 is composed of two identical fitting plates, and the surface of the driving disk 40 that fits it has a certain inclination angle. When the driving disk 40 rotates, it continuously horizontally presses the driving block 39 through this inclination angle, so that the driving block 39 makes a horizontal reciprocating motion, and then the two reciprocating frames 27 make a staggered reciprocating motion.

[0024] Further, the air blowing unit includes a plurality of wind blades 42. A plurality of fixing frames 43 are fixedly installed on the inner wall of the cleaning box 12. The wind blades 42 are rotatably installed on the plurality of fixing frames 43 through a rotating shaft. A secondary bevel gear 38 is fixedly installed on the lower side of the wind 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. A plurality of nozzles 30 are installed on the sealing plate 29. A jet orifice is provided on the surface of the nozzle 30. A tapered block 41 is fixedly installed on the inner bottom wall of the nozzle 30. A primary one-way valve 31 is installed on the nozzle 30.

[0025] With the above structure, four wind blades 42 are installed at equal intervals, and each wind blade 42 is installed with a corresponding first-stage bevel gear 37 through a rotating shaft. The first-stage bevel gear 37 is driven by a second-stage bevel gear 38 to drive the wind blade 42. In order to prevent the first-stage bevel gear 37 and the second-stage bevel gear 38 from being affected by the debris generated during grinding, when in use, a protective housing needs to be installed on the first-stage bevel gear 37 and the second-stage bevel gear 38 to protect the internal cleanliness of the first-stage bevel gear 37 and the second-stage bevel gear 38. The sealing plate 29 is installed at the bottom of the cleaning box 12, and a plurality of nozzles 30 installed on its surface are located between two groups of cleaning scraper strips 28. The directions of the two air jet openings opened on the surface of the nozzle 30 are located at the gap positions of the cleaning scraper strips 28. The conical block 41 installed on the inner bottom wall of the nozzle 30 can divert the gas in the nozzle 30 to increase the jet pressure in the air jet opening. The first one-way valve 31 installed on the nozzle 30 is from the upper side of the cleaning box 12 to the lower side of the cleaning box 12. The second-stage bevel gear 38 is driven to rotate by the first rotating rod 32, the second-stage bevel gear 38 drives the corresponding first-stage bevel gear 37 to rotate, and the first-stage bevel gear 37 drives the corresponding wind blade 42 to rotate, so that a plurality of wind blades 42 rotate, inhaling the external gas 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 residues remaining in the gap of the cleaning scraper to prevent them from accumulating in the gap and affecting the cleaning.

[0026] Further, the air blowing unit further includes a U-shaped plate 47. The U-shaped plate 47 is fixedly installed on the inner wall of the cleaning box 12. A guiding plate 33 is fixedly installed on the inner wall of the cleaning box 12. A plurality of suction pipes 45 are fixedly installed on the guiding plate 33. A plurality of second one-way valves 48 are installed on the suction pipes 45. A filter plate 46 is fixedly installed on the lower side of the guiding plate 33.

[0027] With the above structure, the U-shaped plate 47 is installed at the bottom of the cleaning box 12 and can be disassembled, and is attached to 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 by cleaning. The guiding plate 33 is composed of an inclined plate and a horizontal plate. The inclined plate is used to guide the debris, and a plurality of suction pipes 45 are installed at equal intervals on the horizontal plate. The directions of the second one-way valves 48 installed on the suction pipes 45 are from the bottom of the cleaning box 12 to the top of the cleaning box 12. The filter plate 46 installed below the horizontal plate can filter the debris to prevent it from entering the inside 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 in the lower cleaning box 12, due to the special structure, there is no need to install the guiding plate 33, the suction pipes 45 and the second one-way valves 48, and the debris after grinding can directly pass through the cleaning box 12 and fall onto the base 1.

[0028] Further, the air blowing unit further includes a secondary rotating rod 36. The secondary rotating rod 36 is rotatably installed on the inner wall of the cleaning box 12. A plurality of primary bevel gears 37 are fixedly installed on the surface of the secondary rotating rod 36. The primary bevel gears 37 are meshed with secondary bevel gears 38. One end of the primary rotating rod 32 is fixedly installed with a driving wheel 44. One end of the secondary rotating rod 36 is fixedly installed with a transmission wheel 49. The same transmission belt 35 is sleeved and installed on the surfaces of the transmission wheel 49 and the rotating wheel.

[0029] With the above structure, the primary rotating rod 32 and the secondary rotating rod 36 rotatably installed on the inner wall of the cleaning box 12 have the same size. Four secondary bevel gears 38 are equally spaced on their surfaces, and the number thereof is the same as that of the blower blades 42. The number of blower blades 42 can be appropriately increased or decreased according to the actual situation. The driving wheel 44 and the transmission belt 35 drive the transmission wheel 49 to rotate, so that an additional set of blower blades 42 rotates, thereby increasing the air intake or suction volume and enhancing the cleaning effect.

[0030] Further, the driving unit includes a cleaning moving block 14. The cleaning moving block 14 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 are meshed 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 table 4. The cleaning moving block 14 is screwed and installed on the surface of the secondary driving threaded rod 15. A cleaning motor 13 is fixedly installed on one side of the detection table 4. The output end of the cleaning motor 13 is coaxially and fixedly connected to one end of the secondary driving threaded rod 15.

[0031] With the above structure, two transmission rods 19 are rotatably installed on one side of the cleaning moving block 14. The two transmission rods 19 respectively drive the two cleaning boxes 12. One transmission gear 20 is installed on the surface of each transmission rod 19 and is meshed with the two symmetrically installed transmission gears 20 in the secondary moving port. When the cleaning moving block 14 is driven to move horizontally by the secondary driving threaded rod 15, the transmission gears 20 rotate self - rotatably through the transmission rack 16 and provide driving force for the primary rotating rods 32 in the cleaning boxes 12 at the same time. It should be noted that the rotation directions of the two transmission gears 20 are opposite. Therefore, the air intake directions of the blower blades 42 in the upper cleaning box 12 and the blower blades 42 in the lower cleaning box 12 need to be opposite, so that the upper and lower cleaning boxes 12 can suck or blow air simultaneously.

[0032] Further, the fixing component includes a plurality of fixing shells 5. One side of the fixing shell 5 is fixedly installed with a baffle 6. Two lifting racks 22 are slidably installed on the inner wall of the fixing shell 5. One side of the two lifting racks 22 is fixedly installed with fixing blocks 21 correspondingly. Two rotating shafts 24 are rotatably installed on the inner wall of the fixing shell 5. One end of the rotating shaft 24 is fixedly installed with a fixing gear 23. The fixing gear 23 meshes with the lifting rack 22. Locking units are fixedly installed on the surfaces of the two rotating shafts 24.

[0033] With the above structure, the four fixing shells 5 are respectively installed at the four vertex positions of the detection port, which is convenient for fixing the four vertex areas of the galvanized sheet and enhances the stability of the fixing. Two fixing blocks 21 are symmetrically installed up and down inside each fixing shell 5. Each fixing block 21 is correspondingly installed with a lifting rack 22. Each lifting rack 22 is correspondingly installed with a fixing gear 23. By relatively rotating the two fixing gears 23 simultaneously, the two fixing gears 23 drive the corresponding lifting racks 22, so as to move the two fixing blocks 21 closer to or away from each other, and further fix the galvanized sheet.

[0034] Further, the locking unit includes a worm gear 25. The worm gear 25 is fixedly installed on the surface of the rotating shaft 24. Two installation holes are opened on one side of the detection table 4. Fixing rods 17 are rotatably installed in the two installation holes and penetrate through the inside of the fixing shell 5. Two worm shafts 26 are installed on the fixing rods 17. The worm shafts 26 mesh with the two worm gears 25.

[0035] With the above structure, the fixing gear 23 is installed with a worm gear 25 through the rotating shaft 24. Two worm gears 25 are symmetrically installed up and down inside each fixing shell 5. One fixing rod 17 passes through the two fixing shells 5. Two worm shafts 26 are installed on each fixing rod 17. One worm shaft 26 simultaneously drives the two worm gears 25 to move in opposite directions, and further drives the two fixing blocks 21 to move closer to or away from each other.

[0036] Further, the thickness measuring component includes a thickness measuring moving block 8. The thickness measuring moving block 8 is slidably installed in the first-level moving port. Two thickness measuring brackets 10 are fixedly installed on one side of the thickness measuring moving block 8. Thickness measuring laser instruments 11 are installed on the two thickness measuring brackets 10. A first-level driving threaded rod 7 is rotatably installed in the first-level moving port and extends to one side of the detection table 4. The thickness measuring moving block 8 is screwed on the surface of the first-level driving threaded rod 7. A thickness measuring motor 9 is fixedly installed on one side of the detection table 4.

[0037] 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 installed on one side of the thickness measuring moving block 8 and the two cleaning boxes 12 are on the same vertical plane, which can ensure that when cleaning, the residues generated on the galvanized sheet will not fall onto the thickness measuring laser instrument 11 and affect the normal thickness detection. The thickness measuring laser instrument 11 is a prior art. The two thickness measuring laser instruments 11 are on the same vertical plane. The output end of the thickness measuring motor 9 drives the first-stage driving threaded rod 7 to rotate. The first-stage driving 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. By horizontally scanning the galvanized sheet with the upper and lower thickness measuring laser instruments 11, the thickness of the galvanized sheet can be monitored.

[0038] Further, 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 instrument 11, and the controller 3 is electrically connected to the cleaning motor 13.

[0039] With the above structure, the controller 3 can control electronic components such as the thickness measuring motor 9, the thickness measuring laser instrument 11, and the cleaning motor 13, and the controller 3 can also display the thickness data, which is convenient for the inspectors to record.

[0040] Working principle: When the device is in use, first take out the galvanized sheet to be measured for thickness and cut it into a predetermined size. Place the galvanized sheet between the four fixed shells 5 and make its upper and lower sides located between the fixed blocks 21. Then manually rotate the two fixed rods 17. The fixed rods 17 drive the worm 26 to rotate. One worm 26 drives the two worm wheels 25 to rotate simultaneously. The two worm wheels 25 respectively drive the corresponding fixed gears 23 to rotate through the rotating shafts 24, so that the two fixed gears 23 rotate relatively. The two fixed gears 23 respectively drive the two lifting racks 22 to move. The two lifting racks 22 respectively drive the two fixed blocks 21 to approach each other and squeeze the galvanized sheet, thereby completing the fixation of the galvanized sheet; After the fixation is completed, start the cleaning motor 13 through the controller 3. The output end of the cleaning motor 13 drives the second-stage driving threaded rod 15 to rotate. The second-stage driving threaded rod 15 drives the cleaning moving block 14 to move. The cleaning moving block 14 drives the corresponding cleaning boxes 12 to move horizontally through the two transmission rods 19 respectively, so that the two cleaning boxes 12 move to the upper and lower sides of the galvanized sheet. The cleaning boxes 12 drive the two reciprocating frames 27 to move. The two reciprocating frames 27 drive the corresponding cleaning scrapers to move. At the same time, the transmission rods 19 rotate synchronously under the action of the transmission gears 20 and the transmission racks 16. The transmission rods 19 drive the first-stage rotating rods 32 to rotate. The first-stage rotating rods 32 drive the driving disks 40 to move. The driving disks 40 simultaneously push the two driving blocks 39. The two driving blocks 39 respectively drive the corresponding reciprocating frames 27 to move reciprocally, so that the cleaning scrapers perform high-frequency staggered scraping, thereby scraping and cleaning the oxide layer on the surface of the galvanized sheet; During the scraping process, the first-level rotating rod 32 drives the driving wheel 44 to rotate. The driving wheel 44 drives the corresponding driven wheel 49 to rotate in the same direction through the transmission belt 35. The driven wheel 49 drives the second-level rotating rod 36 to rotate synchronously. The first-level rotating rod 32 and the second-level rotating rod 36 respectively drive the corresponding second-level bevel gears 38 to rotate. The second-level bevel gears 38 drive the corresponding first-level bevel gears 37 to rotate. The first-level bevel gears 37 drive the corresponding wind blades 42 to rotate, so that a plurality of wind blades 42 rotate, sucking the outside gas 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 residues remaining in the gap of the cleaning scraper, preventing them from accumulating in the gap and affecting the cleaning; When the cleaning box 12 moves to the maximum position, the output end of the cleaning motor 13 starts to reverse, driving the cleaning moving block 14 to reset at this time. During the reset process, the transmission rod 19 flips and drives the wind blades 42 to flip through relevant structures, generating negative pressure in the cleaning box 12. At this time, an adsorption force is generated at the opening of the bottom of the cleaning box 12 near the U-shaped plate 47, sucking the scraped oxide debris into the cleaning box 12, guiding the debris to the lower side of the filter plate 46 under the action of the guiding plate 33, and collecting these debris through the U-shaped plate 47 to prevent the debris on the upper side of the galvanized sheet from affecting the thickness detection; Repeat the above cleaning operation until the oxide layers on both the upper and lower sides of the galvanized sheet disappear. At this time, the controller 3 is used to reset the cleaning box 12 and turn off the cleaning motor 13, and the thickness measurement motor 9 is started. The output end of the thickness measurement motor 9 drives the first-level driving screw rod 7 to rotate. The first-level driving screw rod 7 drives the thickness measurement moving block 8 to move. The thickness measurement moving block 8 simultaneously drives the two thickness measurement brackets 10 to move. The two thickness measurement brackets 10 simultaneously drive the two thickness measurement laser instruments 11 to pass over the upper and lower sides of the galvanized sheet, and transmit and display the detected thickness data on the controller 3, thus completing the thickness detection of the galvanized sheet.

[0041] The present invention also provides a method for laser thickness measurement of galvanized sheets, including the following steps: S1. First, take out the galvanized sheet to be measured for thickness, cut it into a predetermined size, place the galvanized sheet on the inner wall of the detection table 4, and manually rotate the two fixing rods 17 to fix the galvanized sheet with the fixing assembly. After the fixing is completed, use the controller 3 to control the cleaning motor 13 to first clean the galvanized sheet; S2. The output end of the cleaning motor 13 drives the driving unit to drive the upper and lower cleaning boxes 12 of the galvanized sheet to perform synchronous horizontal movement, and at the same time drives the driving disc 40 to rotate through the rotation of the two transmission rods 19. The driving disc 40 reciprocates the two reciprocating frames 27 through the driving block 39, thereby driving the two moving cleaning wiper strips 28 to perform high-frequency reciprocating movement, scraping the oxide layer on the surface of the galvanized sheet. During the reset process after the cleaning box 12 finishes cleaning, a negative pressure is generated inside the cleaning box 12 through the reverse rotation of multiple blades to suck and clean the debris, preventing it from affecting the thickness detection; S3. After the cleaning is completed, the controller 3 controls the cleaning motor 13 to reset the cleaning box 12. At the same time, the thickness measurement component is started to measure the thickness of the cleaned galvanized sheet. After obtaining the data, the device is shut down, and the two fixed rods 17 are manually reversed to remove the galvanized sheet, completing the thickness detection.

[0042] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A galvanized sheet laser thickness measuring device, comprising a base (1), characterized in that: An overhead frame (2) is fixedly installed on the upper side of the base (1). A detection table (4) is fixedly installed on the overhead frame (2). A fixing component is fixedly installed on the inner wall of the detection table (4). A first-level moving port is formed on one side of the detection table (4). A thickness measurement component is slidably installed in the first-level moving port. Stable sliding rods (18) are fixedly installed on both the upper and lower sides of the detection table (4). A cleaning component is slidably installed on the surface of the stable sliding rods (18). The cleaning component includes two cleaning boxes (12). Stable ears (34) are fixedly installed on one side of each of the two cleaning boxes (12). The stable ears (34) are slidably installed on the surface of the stable sliding rods (18). Two reciprocating frames (27) are slidably installed on the inner wall of the cleaning box (12). Cleaning scrapers are fixedly installed on the lower sides of the two reciprocating frames (27). A plurality of cleaning strips (28) are fixedly installed on the lower sides of the two reciprocating frames (27). Driving blocks (39) are fixedly installed on the upper sides of the two reciprocating frames (27). A rotating hole is formed on one side of the cleaning box (12). A first-level rotating rod (32) is rotatably installed in the rotating hole. A driving disk (40) is fixedly installed on the surface of the first-level rotating rod (32). The surface of the driving disk (40) is in contact with the driving block (39). A second-level moving port is formed on the upper side of the detection table (4). A driving unit is slidably installed in the second-level moving port. An air blowing unit is fixedly installed on the inner wall of the cleaning box (12).

2. The galvanized sheet laser thickness measuring device according to claim 1, wherein: The air blowing unit includes a plurality of wind blades (42). A plurality of fixing frames (43) are fixedly installed on the inner wall of the cleaning box (12). The wind blades (42) are rotatably installed on the plurality of fixing frames (43) through rotating shafts. A second-level bevel gear (38) is fixedly installed on the lower side of the wind blade (42). A first-level bevel gear (37) is fixedly installed on the surface of the first-level rotating rod (32). The first-level bevel gear (37) meshes with the second-level bevel gear (38). A sealing plate (29) is fixedly installed on the inner wall of the cleaning box (12). A plurality of nozzles (30) are installed on the sealing plate (29). Jet ports are formed on the surface of the nozzle (30). A conical block (41) is fixedly installed on the inner bottom wall of the nozzle (30). A first-level one-way valve (31) is installed on the nozzle (30).

3. The galvanized sheet laser thickness measuring device according to claim 2, wherein: The air blowing unit further includes a U-shaped plate (47). The U-shaped plate (47) is fixedly installed on the inner wall of the cleaning box (12). A guiding plate (33) is fixedly installed on the inner wall of the cleaning box (12). A plurality of suction pipes (45) are fixedly installed on the guiding plate (33). A plurality of second-level one-way valves (48) are installed on the suction pipes (45). A filter plate (46) is fixedly installed on the lower side of the guiding plate (33).

4. A galvanized sheet laser thickness measuring device according to claim 2, characterized in that: The air blowing unit further includes a secondary rotating rod (36), the secondary rotating rod (36) is rotatably installed on the inner wall of the cleaning box (12), a plurality of primary bevel gears (37) are fixedly installed on the surface of the secondary rotating rod (36), the primary bevel gears (37) are meshed with secondary bevel gears (38), a driving wheel (44) is fixedly installed at one end of the primary rotating rod (32), a transmission wheel (49) is fixedly installed at one end of the secondary rotating rod (36), and a same transmission belt (35) is sleeved on the surfaces of the transmission wheel (49) and the rotating wheel.

5. The galvanized sheet laser thickness measuring device according to claim 1, wherein: The driving unit includes a cleaning moving block (14), the cleaning moving block (14) is slidably installed in the secondary moving port, a transmission rod (19) is fixedly installed at one end of the primary rotating rod (32), one ends of the two transmission rods (19) are respectively 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) are meshed 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 table (4), the cleaning moving block (14) is screwed on the surface of the secondary driving threaded rod (15), and a cleaning motor (13) is fixedly installed on one side of the detection table (4), and the output end of the cleaning motor (13) is coaxially and fixedly connected to one end of the secondary driving threaded rod (15).

6. The galvanized sheet laser thickness measuring device according to claim 1, characterized in that: The fixing assembly includes a plurality of 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), fixing blocks (21) are correspondingly 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), fixing gears (23) are fixedly installed at one ends of the rotating shafts (24), the fixing gears (23) are meshed with the lifting racks (22), and locking units are fixedly installed on the surfaces of the two rotating shafts (24).

7. A galvanized sheet laser thickness measuring device according to claim 6, characterized in that: The locking unit includes worm wheels (25), the worm wheels (25) are fixedly installed on the surfaces of the rotating shafts (24), two mounting holes are opened on one side of the detection table (4), fixing rods (17) are rotatably installed in the two mounting holes and penetrate through the inside of the fixing shell (5), two worm shafts (26) are installed on the fixing rods (17), and the worm shafts (26) are meshed with the two worm wheels (25).

8. The galvanized sheet laser thickness measuring device according to claim 5, characterized in that: The thickness measurement component includes a thickness measurement moving block (8), which is slidably installed in the first-level moving port. Two thickness measurement brackets (10) are fixedly installed on one side of the thickness measurement moving block (8). Thickness measurement laser instruments (11) are installed on both of the two thickness measurement brackets (10). A first-level driving threaded rod (7) is rotatably installed in the first-level moving port and extends to one side of the detection table (4). The thickness measurement moving block (8) is screwed onto the surface of the first-level driving threaded rod (7). A thickness measurement motor (9) is fixedly installed on one side of the detection table (4).

9. The galvanized sheet laser thickness measuring device according to claim 8, 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 measurement motor (9), the controller (3) is electrically connected to the thickness measurement laser instrument (11), and the controller (3) is electrically connected to the cleaning motor (13).

10. A galvanized sheet laser thickness measurement method according to any one of claims 1-9, characterized in that: It includes the following steps: S1. First, take out the galvanized sheet to be measured for thickness and cut it into a predetermined size. Place the galvanized sheet on the inner wall of the detection table (4) and manually rotate the two fixing rods (17) to fix the galvanized sheet with the fixing component. After the fixing is completed, use the controller (3) to control the cleaning motor (13) to first clean the galvanized sheet; S2. The output end of the cleaning motor (13) drives the driving unit to drive the two cleaning boxes (12) above and below the galvanized sheet to perform synchronous horizontal movement. At the same time, the two transmission rods (19) rotate to drive the driving disc (40) to rotate. The driving disc (40) drives the two reciprocating frames (27) to perform reciprocating movement through the driving block (39), thereby driving the two moving cleaning strips (28) to perform high-frequency reciprocating movement to scrape the oxide layer on the surface of the galvanized sheet. During the process of the cleaning box (12) resetting after cleaning, negative pressure is generated inside the cleaning box (12) through the reverse rotation of multiple blades to suck in and clean the debris to prevent it from affecting the thickness detection; S3. After the cleaning is completed, use the controller (3) to control the cleaning motor (13) to reset the cleaning box (12). At the same time, start the thickness measurement component to measure the thickness of the cleaned galvanized sheet. After obtaining the data, turn off the equipment, manually reverse the two fixing rods (17), and remove the galvanized sheet to complete the thickness detection.

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