A coating detection device

Abstract

The present invention discloses a coating detection device, which includes a connection cylinder disposed inside a casing. One end of the connection cylinder is provided with a detection unit. A rotating cylinder is rotatably disposed on one side of the connection cylinder close to the casing. A sealing plate is rotatably disposed at one end of the inner cavity of the connection cylinder away from the casing. The detection unit is installed on the sealing plate. An annular gap is provided between the sealing plate and the connection cylinder, and a sealing component is provided at the annular gap; an adjusting component is provided on the side of the sealing plate away from the detection unit; after the maintenance is completed, the sealing plate can be driven to reset and cover the end cover. Then, by reversing the first telescopic rod, the screw rod can be driven to move downward. Under the traction of the spring, the sealing strip can be driven to reset and be retracted into the limiting groove again, so as to facilitate use. This device always isolates the space inside the equipment from the outside when the detection unit is being repaired, so it can ensure that the pressure inside the equipment does not drop and prevent dust from entering the equipment interior.

Description

Technical Field

[0001] The present invention relates to the technical field of coating detection, and particularly relates to a coating detection device. Background Art

[0002] Laser thickness measurement is a technology that can sense the thickness of an object to be measured and convert it into an available output signal. It is commonly used in industrial production processes to measure the thickness of materials and their surface coatings, and can also be used for error measurement in thickness control systems. Its main feature is that during the measurement process, it is not necessary to measure the absolute size of the material thickness, but only to know the relative value of the measured thickness or the thickness relative to a standard value.

[0003] Chinese Patent CN111074230A discloses an on-line coating uniformity detection device, a detection method and a coating device. The detection device includes a carrier body, a distance detection mechanism and a control device. The distance detection mechanism is arranged on the coating device and is used to detect the distance value of the carrier body in a set direction according to a preset detection period. The control device is used to calculate the acceleration fluctuation value in the set direction according to the distance value and the preset detection period, and determine the coating uniformity of the product in the set direction according to the acceleration fluctuation value. The on-line coating uniformity detection device, the detection method and the coating device provided by the present invention realize the detection of coating uniformity during the coating process of the substrate, thereby improving production efficiency, saving input costs, and at the same time, it can determine the influence of the change in acceleration when the carrier body moves during the coating process on the coating uniformity, so as to determine the reasons and mechanisms for poor coating uniformity.

[0004] However, during the repair process of the detection mechanism of this device, it is necessary to remove the detection mechanism from the coating device or open the cover plate of the coating device. During this process, it may cause a pressure change inside the coating device, and it will also allow dust in the external air to enter the device, thereby affecting the use of the internal electronic components of the device.

[0005] Therefore, it is necessary to provide a coating detection device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a coating detection device to solve the problems such as the defects that during the repair process of the detection mechanism of the existing device, it is necessary to remove the detection mechanism from the coating device or open the cover plate of the coating device, which may cause a pressure change inside the coating device during this process, and it will also allow dust in the external air to enter the device, thereby affecting the use of the internal electronic components of the device as mentioned in the above background art.

[0007] Based on the above ideas, the present invention provides the following technical solutions: It includes a casing and a connecting cylinder arranged inside the casing. One end of the connecting cylinder is provided with a detection unit. A rotating cylinder is rotatably arranged on the side of the connecting cylinder close to the casing. A sealing plate is rotatably arranged at the end of the inner cavity of the connecting cylinder far from the casing. The detection unit is installed on the sealing plate. An annular gap is provided between the sealing plate and the connecting cylinder, and a sealing component is arranged at the annular gap.

[0008] On the side of the sealing plate far from the detection unit, an adjusting component is provided. After the sealing plate is flipped, the adjusting component drives the sealing component to extend in the annular gap between the connecting cylinder and the sealing plate and seals this annular gap.

[0009] As a further solution of the present invention: Two sleeve bushes are symmetrically distributed along the extending direction on the outer side surface of the sealing plate. The sleeve bushes are fixedly connected to the sealing plate. The sleeve bushes penetrate through the connecting cylinder and are rotatably connected to the connecting cylinder.

[0010] As a further solution of the present invention: The sealing component includes a sealing strip arranged inside the sealing plate. A through opening for guiding out the sealing strip is provided on the outer circumferential surface of the sealing plate. A limiting groove is arranged on the outer side of the sealing strip. The limiting groove is integrally spiral and fixedly connected to the inside of the sealing plate. One end of the sealing strip is placed inside the limiting groove. The other end of the sealing strip extends along the spiral track of the limiting groove and is led out from the opening. One end of the sealing strip arranged inside the limiting groove is fixedly connected with a moving block. An arc-shaped spring is arranged at one end of the moving block and the inside of the limiting groove.

[0011] As a further solution of the present invention: The adjusting component includes a worm gear arranged on the side of the sealing plate far from the detection unit. The worm gear is rotatably connected to the sealing plate. A worm is meshed with the top of the worm gear. Connecting shafts are fixedly connected to both ends of the worm. A winding wheel is fixedly connected to the outside of the connecting shaft. A connecting rod is arranged on the outside of the worm gear. The connecting rod is fixedly connected to the worm gear. A supporting rod is fixedly connected to the inside of the connecting rod. One end of the sealing strip led out from the sealing plate is connected to the supporting rod.

[0012] As a further solution of the present invention: A pulling rope is wound around the outside of the winding wheel. One end of the pulling rope is fixedly connected to the winding wheel and wound around the outside of the winding wheel. The other end of the pulling rope extends upward through the sealing plate and then extends into the inside of the sleeve bush.

[0013] As a further solution of the present invention: a screw rod is arranged inside the bushing, the top end of the screw rod extends to the outside of the bushing, the screw rod is in threaded connection with the bushing, a first driven bevel gear is sleeved outside the screw rod, a chute is arranged on the screw rod, and a slider matched with the chute is fixedly connected to the inner wall of the first driven bevel gear. A connecting column is fixedly connected to the bottom end of the screw rod, and one end of the pulling rope extending into the bushing is connected to the connecting column.

[0014] As a further solution of the present invention: a fixed disk is arranged outside the first driven bevel gear, the fixed disk is rotatably connected with the first driven bevel gear, and a fixed column is fixedly connected between the fixed disk and the sealing plate to support the fixed disk.

[0015] As a further solution of the present invention: a first driving bevel gear is meshed outside the first driven bevel gear, a first telescopic rod is fixedly connected to the outside of the first driving bevel gear, one end of the first telescopic rod far away from the first driving bevel gear is fixedly connected to a first rotating shaft, the first rotating shaft penetrates through the machine shell and extends to the outside of the machine shell, a second driven bevel gear is fixedly sleeved outside the bushing, a second driving bevel gear is meshed outside the second driven bevel gear, a second telescopic rod is fixedly connected to the outside of the second driving bevel gear, and one end of the second telescopic rod far away from the second driving bevel gear is fixedly connected to a second rotating shaft, and the second rotating shaft penetrates through the machine shell and extends to the outside of the machine shell.

[0016] As a further solution of the present invention: one end of the sealing strip connected to the support rod is provided with a first sealing surface, and after the sealing strip is led out from the opening, it extends on the circumferential surface outside the sealing plate, so that the sealing strip forms a second sealing surface at the bent part of the opening.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the worm gear can drive the support rod to rotate along the circumferential surface outside the sealing plate, and then pull the sealing strip to move in the annular gap between the sealing plate and the connecting cylinder to seal the annular gap, thereby preventing the air inside the machine shell from flowing through the annular gap. Therefore, during the maintenance of the detection unit, external air can be prevented from entering the equipment, which is beneficial to protecting the electronic components of the equipment. After the maintenance is completed, the sealing plate can be driven to reset and cover the end cover. Then, by reversing the first telescopic rod, the screw rod can be driven to move downward, and under the traction of the spring, the sealing strip can be driven to reset and be retracted into the limiting groove again, which is convenient for use. This device keeps the space inside the equipment isolated from the outside world during the maintenance of the detection unit, so it can ensure that the pressure inside the equipment is not lost and prevent dust from entering the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the drawings and embodiments.

[0019] Figure 1 is the overall structural schematic diagram of the present invention;

[0020] Figure 2 is the three-dimensional structural schematic diagram of the present invention;

[0021] Figure 3 is the structural schematic diagram of the adjustment component of the present invention;

[0022] Figure 4 is the structural schematic diagram of the connection between the worm gear and the worm of the present invention;

[0023] Figure 5 is the present invention Figure 1 magnified structural schematic diagram at position A;

[0024] Figure 6 is the present invention Figure 3 magnified structural schematic diagram at position B;

[0025] Figure 7 is the internal structural schematic diagram of the sealing strip of the present invention on the sealing plate;

[0026] Figure 8 is the structural schematic diagram of the connection between the screw rod and the pulling rope of the present invention;

[0027] Figure 9 is the structural schematic diagram of the limiting groove of the present invention;

[0028] Figure 10 is the present invention Figure 4 magnified structural schematic diagram at position C;

[0029] Figure 11 is the structural schematic diagram of the first sealing surface and the second sealing surface of the present invention.

[0030] In the figure: 1, machine housing; 2, first telescopic rod; 3, second telescopic rod; 4, rotating cylinder; 5, annular gap; 6, detection element; 7, sealing plate; 8, connecting cylinder; 9, nut; 10, end cover; 11, screw rod; 12, sliding groove; 13, shaft sleeve; 14, sealing strip; 15, worm; 16, connecting rod; 17, first sealing surface; 18, worm gear; 19, pulling rope; 20, winding wheel; 21, fixed disk; 22, first driven bevel gear; 23, first driving bevel gear; 24, second driving bevel gear; 25, second driven bevel gear; 26, limiting groove; 27, moving block; 28, spring; 29, opening; 30, support rod; 31, second sealing surface. Detailed implementation manners

[0031] As Figures 1-3As shown in the figure, a coating detection device includes a machine housing 1 and a connecting cylinder 8 disposed inside the machine housing 1. A detection unit is provided at one end of the connecting cylinder 8. In actual use, a high-speed camera or an optoelectronic detection element 6 can be used to detect the thickness or size after coating. The detection method here is a common means in the coating field and will not be elaborated again.

[0032] A rotating cylinder 4 is provided on the side of the connecting cylinder 8 close to the machine housing 1. The rotating cylinder 4 is rotatably connected to the connecting cylinder 8, and the rotating cylinder 4 penetrates the machine housing 1 and is threadedly connected to the machine housing 1. A sealing plate 7 is rotatably provided at the end of the inner cavity of the connecting cylinder 8 away from the machine housing 1, and the detection unit is installed on this sealing plate 7. An end cap 10 is threadedly connected to the end of the rotating cylinder 4 away from the detection unit. In addition, an annular gap 5 is provided between the sealing plate 7 and the connecting cylinder 8, and a sealing assembly is provided at the annular gap 5.

[0033] In actual use, when it is necessary to detect the detection element 6, the sealing plate 7 can be rotated to rotate the detection unit installed on its outer surface into the inner cavity of the connecting cylinder 8, so as to facilitate the maintenance of the detection unit. Then, the sealing assembly is driven to seal the annular gap 5, so as to prevent the air inside the machine housing 1 from flowing through the annular gap 5. At this time, the detection unit is placed in the inner cavity of the connecting cylinder 8 and is in a relatively closed space. Then, the rotating cylinder 4 is rotated. Since it is threadedly connected to the machine housing 1, the rotating cylinder 4 can be driven to move linearly during the rotation of the rotating cylinder 4, thereby driving the connecting cylinder 8 to move outward, so that the detection unit installed on the sealing plate 7 also moves outward, which is beneficial for workers to perform maintenance. Then, the end cap 10 is opened to detect and maintain the detection unit in the inner cavity of the connecting cylinder 8.

[0034] Furthermore, an adjusting assembly is provided on the side of the sealing plate 7 away from the detection unit. Through the adjusting assembly, the sealing assembly can seal the annular gap 5 between the connecting cylinder 8 and the sealing plate 7.

[0035] As Figures 3-4, as shown in FIGS. 6 - 10, two bushings 13 are symmetrically distributed on the outer side surface of the sealing plate 7 along its extending direction. The bushing 13 is fixedly connected to the sealing plate 7, penetrates through the connecting cylinder 8 and is rotatably connected to the connecting cylinder 8. And the inside of the sealing plate 7 is hollow. The sealing assembly includes a sealing strip 14 arranged inside the sealing plate 7. And a through opening 29 is arranged on the outer circumferential surface of the sealing plate 7, so that the sealing strip 14 can pass through this opening 29. At the same time, a limiting groove 26 is arranged on the outer side of the sealing strip 14. The cross-sectional shape of the limiting groove 26 is set to be U-shaped, and the limiting groove 26 is integrally spiral and fixedly connected to the inside of the sealing plate 7. One end of the sealing strip 14 is placed inside the limiting groove 26, and the other end extends along the spiral track of the limiting groove 26 and is led out from the opening 29. Further, a moving block 27 is fixedly connected to one end of the sealing strip 14 arranged inside the limiting groove 26. An arc-shaped spring 28 is arranged at one end of the moving block 27 and the inside of the limiting groove 26. When the sealing strip 14 is pulled, the spring 28 can be driven to extend through the moving block 27, which is beneficial for preparing the reset of the sealing strip 14 in the later stage.

[0036] During actual use, when the sealing plate 7 rotates 180° to turn the detection unit into the inner cavity of the connecting cylinder 8, the annular gap 5 can be sealed by pulling the sealing strip 14 to move in the annular gap 5. After that, when the end cover 10 is opened to repair the detection unit, air flow into the equipment can be avoided.

[0037] As Figures 3-6 shown, the adjusting assembly includes a worm gear 18 arranged on the side of the sealing plate 7 away from the detection unit. The worm gear 18 is rotatably connected to the sealing plate 7. A worm 15 is engaged at the top of the worm gear 18. Both ends of the worm 15 are fixedly connected with connecting shafts. A winding wheel 20 is fixedly connected to the outside of the connecting shaft. At the same time, a fixing plate is arranged at the end of the connecting shaft. The connecting shaft is rotatably connected to the fixing plate. And the fixing plate is fixedly connected to the side surface of the sealing plate 7.

[0038] Further, a pulling rope 19 is wound around the outside of the winding wheel 20. One end of the pulling rope 19 is fixedly connected to the winding wheel 20 and wound around the outside of the winding wheel 20. The other end extends upward. The pulling ropes 19 at both ends of the worm 15 extend upward and then merge into one strand directly below the bushing 13. Then it passes through the sealing plate 7 and extends into the inside of the bushing 13. And pulleys are arranged at the bending parts of the pulling rope 19 to reduce the friction force suffered when the pulling rope 19 moves. The pulleys are fixedly connected to the sealing plate 7.

[0039] Furthermore, a screw rod 11 is arranged inside the bushing 13. The top end of the screw rod 11 extends to the outside of the bushing 13, and the screw rod 11 is threadedly connected to the bushing 13. A first driven bevel gear 22 is sleeved outside the screw rod 11. A first driving bevel gear 23 is meshed outside the first driven bevel gear 22. A first telescopic rod 2 is fixedly connected to the outside of the first driving bevel gear 23. The cross-sectional shape of the first telescopic rod 2 is set to be rectangular. One end of the first telescopic rod 2 far from the first driving bevel gear 23 is fixedly connected to a first rotating shaft. The first rotating shaft penetrates through the machine housing 1 and extends to the outside of the machine housing 1. The first rotating shaft is rotatably connected to the machine housing 1. In addition, a sliding groove 12 is arranged on the screw rod 11, and a sliding block matched with the sliding groove 12 is fixedly connected to the inner wall of the first driven bevel gear 22, so that the sliding block is slidably connected inside the sliding groove 12.

[0040] In order to support the first driven bevel gear 22, a fixing plate 21 is arranged outside it. The fixing plate 21 is rotatably connected to the first driven bevel gear 22. A fixing column is fixedly connected between the fixing plate 21 and the sealing plate 7 to support the fixing plate 21. A connecting column is fixedly connected to the bottom end of the screw rod 11. One end of the pull rope 19 extending into the bushing 13 is connected to the connecting column.

[0041] A connecting rod 16 is arranged outside the worm gear 18. The connecting rod 16 is fixedly connected to the worm gear 18. A support rod 30 is fixedly connected to one side of the connecting rod 16 close to the bushing 13. One end of the sealing strip 14 led out through the opening 29 is connected to the support rod 30. Specifically, the support rod 30 passes through the sealing strip 14 and is fixedly connected to it.

[0042] In actual use, after the sealing plate 7 rotates 180°, the first telescopic rod 2 is driven to rotate through the first rotating shaft, thereby driving the first active bevel gear 23 to rotate, and the meshing of the first active bevel gear 23 and the first driven bevel gear 22 can drive the screw 11 to rotate, and the screw 11 is threadedly connected to the shaft sleeve 13, so when the screw 11 is rotated, it can be driven to move in the vertical direction. Here, the cooperation of the slider and the slide groove 12 can avoid the screw 11 from interfering with the first driven bevel gear 22 during the movement. When the screw 11 moves upward, the pull rope 19 can be pulled, thereby driving the winding wheel 20 to rotate, and the winding wheel 20 can drive the worm 15 to rotate, and the meshing of the worm 15 and the worm wheel 18 can drive the worm wheel 18 to rotate. At this time, the connecting rod 16 can be driven to rotate through the worm wheel 18, and the connecting rod 16 can pull one end of the sealing strip 14 through the support rod 30, so that the sealing strip 14 located inside the limiting groove 26 is led out from the opening 29, and the support rod 30 It is arranged on the outer circumferential surface of the sealing plate 7, and the rotation center of the worm gear 18 coincides with the axis of the sealing plate 7. Therefore, the worm gear 18 can drive the support rod 30 to rotate along the outer circumferential surface of the sealing plate 7, and then pull the sealing strip 14 to move in the annular gap 5 between the sealing plate 7 and the connecting tube 8 to seal the annular gap 5, thereby preventing the air inside the casing 1 from flowing through the annular gap 5. Therefore, during the maintenance of the detection unit, the external air can be prevented from entering the equipment, which is beneficial to the protection of the electronic components of the equipment. When the inspection is completed, the sealing plate 7 can be driven to reset and the end cover 10 can be covered. After that, the first telescopic rod 2 is reversed to drive the screw 11 to move downward. Under the traction force of the spring 28, the sealing strip 14 can be driven to reset and be re-stored in the limiting groove 26, so that it is easy to use. This device keeps the space inside the equipment isolated from the outside world when the detection unit is repaired, so it can ensure that the internal pressure of the equipment is not lost and prevent dust from entering the internal of the equipment.

[0043] like Figure 5 As shown, a second driven bevel gear 25 is fixedly sleeved on the outer side of the sleeve 13, and a second active bevel gear 24 is meshed on the outer side of the second driven bevel gear 25, and a second telescopic rod 3 is fixedly connected to the outer side of the second active bevel gear 24, and a second rotating shaft is fixedly connected to one end of the second telescopic rod 3 away from the second active bevel gear 24, the second rotating shaft passes through the casing 1 and extends to the outside of the casing 1, and the second rotating shaft is rotatably connected to the casing 1. During actual use, a nut 9 is fixedly connected to one end of the first rotating shaft and the second rotating shaft extending to the outside of the casing 1 to drive the first rotating shaft and the second rotating shaft to rotate.

[0044] In actual use, rotating the second telescopic rod 3 can drive the second driving bevel gear 24 to rotate. The meshing of the second driving bevel gear 24 and the second driven bevel gear 25 can drive the sleeve 13 to rotate, thereby driving the sealing plate 7 to rotate, which is beneficial to flipping the detection unit on one side thereof into the inner cavity of the connecting cylinder 8, thus facilitating maintenance. By rotating the rotating cylinder 4, the first telescopic rod 2 and the second telescopic rod 3 can be compressed to move the connecting cylinder 8 near the inner wall of the machine housing 1, which is beneficial to the maintenance by workers and has strong practicability. When it is necessary to rotate the second telescopic rod 3 to drive the screw rod 11 to rotate, only the nut 9 on the second rotating shaft needs to be fixed to drive the screw rod 11 to rotate alone, and then drive the sealing strip 14 to extend and seal inside the annular gap 5.

[0045] As Figure 11 shown, one end of the sealing strip 14 connected to the support rod 30 is provided with a first sealing surface 17. After the sealing strip 14 is led out from the opening 29, it extends on the outer circumferential surface of the sealing plate 7, so that the sealing strip 14 forms a second sealing surface 31 at the bending part of the opening 29. When the connecting rod 16 drives the support rod 30 to rotate one week, one end of the sealing strip 14 will rewrite back to the opening 29. At this time, through the mutual coincidence and extrusion of the first sealing surface 17 and the second sealing surface 31 on one end of the sealing strip 14, this interface can be sealed, thereby further improving the sealing performance of the annular gap 5 and having strong practicability.

[0046] This device drives the detection unit to flip by flipping the sealing plate 7, which is beneficial to the maintenance thereof. At the same time, the flipped sealing plate 7 can be sealed by the sealing strip 14, which is beneficial to avoiding external dust from entering the equipment during the maintenance process.

Claims

1. A coating detection device, comprising a machine housing and a connecting cylinder arranged inside the machine housing, one end of the connecting cylinder is provided with a detection unit, and it is characterized in that: A rotating cylinder is rotatably arranged on one side of the connecting cylinder close to the machine housing. The rotating cylinder is rotatably connected to the connecting cylinder, penetrates through the machine housing and is threadedly connected to the machine housing. A sealing plate is rotatably arranged at one end of the inner cavity of the connecting cylinder away from the machine housing. The detection unit is installed on the sealing plate. An end cover is threadedly connected to the end of the rotating cylinder away from the detection unit. An annular gap is arranged between the sealing plate and the connecting cylinder, and a sealing component is arranged at the annular gap; An adjusting component is arranged on the side of the sealing plate away from the detection unit. After the sealing plate is turned over, the detection unit installed on its outer side is rotated into the inner cavity of the connecting cylinder. The adjusting component drives the sealing component to extend in the annular gap between the connecting cylinder and the sealing plate and seals this annular gap. Rotating the rotating cylinder drives the connecting cylinder to move outwards, so that the detection unit installed on the sealing plate also moves outwards. Opening the end cover can detect and repair the detection unit in the inner cavity of the connecting cylinder; Two sleeve shafts are symmetrically distributed on the outer side surface of the sealing plate along its extending direction. The sleeve shafts are fixedly connected to the sealing plate, penetrate through the connecting cylinder and are rotatably connected to the connecting cylinder; The sealing component includes a sealing strip arranged inside the sealing plate. A through opening for leading out the sealing strip is arranged on the outer circumferential surface of the sealing plate. A limiting groove is arranged on the outer side of the sealing strip. The limiting groove is integrally spiral and fixedly connected to the inside of the sealing plate. One end of the sealing strip is placed inside the limiting groove, and the other end of the sealing strip extends along the spiral track of the limiting groove and is led out from the opening. One end of the sealing strip arranged inside the limiting groove is fixedly connected with a moving block, and an arc-shaped spring is arranged at one end of the moving block and the inside of the limiting groove.

2. The coating detection device according to claim 1, wherein: The adjusting component includes a worm gear arranged on the side of the sealing plate away from the detection unit. The worm gear is rotatably connected to the sealing plate. A worm is engaged with the top of the worm gear. Connecting shafts are fixedly connected to both ends of the worm. A winding wheel is fixedly connected to the outside of the connecting shaft. A connecting rod is arranged on the outside of the worm gear. The connecting rod is fixedly connected to the worm gear. A support rod is fixedly connected to the inside of the connecting rod. One end of the sealing strip led out from the sealing plate is connected to the support rod.

3. The coating detection device according to claim 2, characterized in that: A pulling rope is wound around the outside of the winding wheel. One end of the pulling rope is fixedly connected to the winding wheel and wound around the outside of the winding wheel. The other end of the pulling rope extends upwards through the sealing plate and then extends into the inside of the sleeve shaft.

4. The coating detection device according to claim 3, characterized in that: A screw rod is arranged inside the sleeve shaft. The top end of the screw rod extends to the outside of the sleeve shaft. The screw rod is threadedly connected to the sleeve shaft. A first driven bevel gear is sleeved on the outside of the screw rod. A sliding groove is arranged on the screw rod. A sliding block matched with the sliding groove is fixedly connected to the inner wall of the first driven bevel gear. A connecting column is fixedly connected to the bottom end of the screw rod. One end of the pulling rope extending into the inside of the sleeve shaft is connected to the connecting column.

5. The coating detection device according to claim 4, characterized in that: A fixed disk is arranged on the outside of the first driven bevel gear. The fixed disk is rotatably connected to the first driven bevel gear. A fixed column is fixedly connected between the fixed disk and the sealing plate to support the fixed disk.

6. The coating detection device according to claim 4, characterized in that: The outer side of the first driven bevel gear meshes with a first driving bevel gear. A first telescopic rod is fixedly connected to the outer side of the first driving bevel gear. One end of the first telescopic rod away from the first driving bevel gear is fixedly connected to a first rotating shaft. The first rotating shaft penetrates through the machine housing and extends to the outside of the machine housing. A second driven bevel gear is fixedly sleeved on the outer side of the shaft sleeve. The outer side of the second driven bevel gear meshes with a second driving bevel gear. A second telescopic rod is fixedly connected to the outer side of the second driving bevel gear. One end of the second telescopic rod away from the second driving bevel gear is fixedly connected to a second rotating shaft. The second rotating shaft penetrates through the machine housing and extends to the outside of the machine housing.

7. A coating detection device according to claim 2, characterized in that: One end of the sealing strip connected to the support rod is provided with a first sealing surface. After the sealing strip is led out from the opening, it extends on the circumferential surface of the outer side of the sealing plate, so that the sealing strip forms a second sealing surface at the bent part of the opening.

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