Continuous laser thickness measuring equipment for coating wet film and dry film

Abstract

The invention discloses continuous laser thickness measuring equipment for coating a wet film and a dry film, and belongs to the technical field of laser thickness measuring devices, and the equipment comprises a conveying line which is installed on a frame, extends in a preset direction, and is used for bearing and conveying a bearing platform; the press-fit cleaning mechanism comprises fixing blocks arranged on the two sides of the top end of the frame, sliding grooves are formed in the fixing blocks, the fixing blocks are movably connected with sliding blocks, the top ends of the sliding blocks are connected to piston rods installed at the bottoms of first air cylinders, and the bottoms of the sliding blocks are connected to strip-shaped plates through first springs; the strip-shaped plates and the fixing blocks are integrally formed, and a pressing roller is movably connected between the sliding blocks. The technical problems that the circuit board is prone to moisture absorption in a high-humidity environment, the dielectric property is affected, the interlayer separation or layering risk is increased, and when the circuit board is covered with air impurity particles, the accuracy of thickness measurement work is also affected are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser thickness measurement equipment, and particularly relates to a continuous laser thickness measurement equipment for wet and dry coated films. Background Art

[0002] In modern industry, thin film processing technology plays a key role in fields such as electronics, optics, and semiconductors. In the field of thin film processing, dry film and wet film are two common coating technologies, each with its own unique characteristics and advantages.

[0003] Dry film is a semi-hardened thin film that needs to be heated and softened during processing to improve its adhesion. Although the operation process is relatively simple and convenient, and it is easy to maintain cleanliness, the coverage performance of dry film is not good when dealing with surface defects such as pits and protrusions. Wet film has good fluidity and can effectively fill surface pits and protrusions, thus improving the coverage. Its film is thinner, which means that wet film performs excellently in terms of image resolution and is particularly suitable for applications with high precision requirements.

[0004] For dry and wet films on circuit boards, both can provide good protection for the circuit board and simplify the process. However, due to the large number of dry and wet film position points on the circuit board and the long continuous thickness measurement working hours, there are high requirements for the temperature and humidity of the measurement environment. For example, a high humidity environment is likely to cause the circuit board to absorb moisture, affecting the dielectric performance and increasing the risk of interlayer separation or delamination. And too high a temperature may cause the aging or performance degradation of the circuit board substrate. At the same time, when there are air impurity particles covering the circuit board, it will also affect the accuracy of the thickness measurement work. Summary of the Invention

[0005] The purpose of the present invention is to provide a continuous laser thickness measurement equipment for wet and dry coated films to solve the technical problems that a high humidity environment is likely to cause the circuit board to absorb moisture, affecting the dielectric performance and increasing the risk of interlayer separation or delamination, and when there are air impurity particles covering the circuit board, it will also affect the accuracy of the thickness measurement work.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A continuous laser thickness measurement equipment for wet and dry coated films, comprising: A conveyor line, which is installed on the frame and extends along a preset direction for carrying and conveying a carrier table; A pressing and cleaning mechanism, the pressing and cleaning mechanism includes fixed blocks placed on both sides of the top of the frame, the fixed blocks are provided with chutes and are movably connected with sliders, the top of the sliders is connected to the piston rod at the bottom of the first cylinder, and the bottom of the sliders is connected to a strip plate through a first spring. The strip plate and the fixed block are integrally formed, and a pressing roller is movably connected between the sliders; A first motor is installed at the center of the outer wall of the strip plate through a first support plate, and the output shaft of the first motor and the rotating wheels at both ends are connected by a first conveyor belt transmission, one end of the rotating wheel passes through the strip plate and extends to the ventilation hole inside the strip plate, the outer wall of the rotating wheel is connected to a first blade matched with it, and the rotating wheel is connected to a bracket distributed in an annular manner at the ventilation hole through a bearing; A ventilation shielding mechanism, the ventilation shielding mechanism includes a synchronization rod installed on a slider, the bottom of the synchronization rod passes through the cover body and extends to the first gear plate, the outer wall of the first gear plate is meshed with a first rotating tooth, the upper and lower ends of the first rotating tooth are meshed with a second gear plate that moves in the opposite direction, and the extended end of the second gear plate is connected to a shielding plate placed at the ventilation hole.

[0007] Furthermore, a strip groove connected to the extension end of the second gear plate is provided in the length direction of the strip plate, a plug-in portion is installed on the top of the shielding plate and is connected to the extension end of the second gear plate by plugging and fixing, and the first gear plate and the second gear plate are maintained in a vertically staggered arrangement.

[0008] Furthermore, it also includes a temperature-adjusting and thickness-measuring mechanism, which includes a U-shaped frame fixed on the frame, and second cylinders are connected to both sides of the top of the U-shaped frame. The piston rod at the bottom of the second cylinder penetrates the U-shaped frame and extends into the box body. A storage port is opened at the bottom of the box body, and a second motor is installed at the center of the top of the box body. The output shaft of the second motor extends to the cam and the steering rod in sequence, and a laser thickness gauge is detachably installed at the bottom of the steering rod.

[0009] Furthermore, both ends of the outer wall of the cam are in contact with and fit on the push plate, the push plate and the resistance block are connected by a second spring, one end of the resistance block is connected to the inner wall of the box body by a third spring, and a third gear plate is integrally installed on the bottom of the resistance block, and the bottom of the third gear plate is transmission-engaged with a second rotating tooth fixed on the first movable shaft, both ends of the first movable shaft are provided with rolling grooves placed on the edge of the inner wall of the box body, and an oscillating brush matching it is installed on the outer wall of the first movable shaft.

[0010] Furthermore, the oscillating brush and the abutment block are arranged vertically, and an opening is connected to the top of the oscillating brush near the second rotating tooth, and an active cavity is formed between the cam and the push plate and is placed inside the box body.

[0011] Furthermore, the upper and lower ends of the outer wall of the second motor output shaft are transmission connected to the second movable shaft through a second conveyor belt, the second movable shaft is equipped with a second blade placed at the groove of the box body, and the bottom of the second movable shaft is equipped with a crossbeam fixed to the side wall of the box body through a second support plate, and the top of the second support plate is provided with an annular groove connected to the second movable shaft, and the annular groove is symmetrically arranged relative to the center of the box body.

[0012] Furthermore, a positioning ring is provided on the second supporting plate at the outer wall edge of the annular groove, and a positioning hole is provided between one end of the crossbeam and the inner wall of the box body, and is locked and fixed by a bolt assembly.

[0013] Furthermore, the cover body is arranged in a cross shape, and the bottom of the cover body is fixed to the frame through a panel, the synchronization rod is provided with a guide hole placed on the top of the cover body, a pressing cavity is formed between the pressure roller and the supporting platform, and protrusions are connected to both ends of the outer wall of the slider, and the protrusions are connected to an embedded opening along the height direction of the side wall of the slide groove.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) A pressing and cleaning mechanism and a ventilation shielding mechanism are provided. When the first cylinder drives the slider to move downward, the pressing roller can press the circuit board on the carrier platform, thereby ensuring the flatness of the dry and wet films on the circuit board and preventing wrinkles, which is beneficial to improving the accuracy of the thickness measurement data. In addition, when the slider moves downward, it can drive the first gear plate to move downward. Under the action of the gear meshing transmission, it can drive the rotation of the first rotating tooth, and can transmit the force to the second gear plates at both ends. During the movement of the second gear plate, it can drive the shielding plate to move synchronously, thereby opening the ventilation hole. In conjunction with the first motor, under the transmission action of the conveyor belt, it can drive the rotating wheels at both ends to move, thereby enabling the first blade to play the role of blowing and cleaning, thereby preventing particulate impurities from falling onto the circuit board, further improving the accuracy of the thickness measurement data. At the same time, when the first cylinder drives the piston rod to move upward, it can drive the shielding plate to close the ventilation hole, thereby preventing dust from falling inside the strip plate when not in use, thereby ensuring the cleanliness of the device.

[0015] (2) A temperature control and thickness measurement mechanism is provided. After the second cylinder is started, it can drive the up and down movement of the box body. Cooperating with the storage opening at the bottom of the box body, it can form a relatively sealed environment with the carrier table, thereby ensuring the dust-proof effect of the thickness measurement work for a long time. After the second motor is started, through the driving action of the conveyor belt, it can drive the second blade on the second movable shaft to rotate for heat dissipation, and can timely discharge the heat inside the box body to prevent the temperature inside the box body from being too high, thus forming an environment with a relatively constant temperature. Moreover, the second motor can drive the laser thickness gauge on the steering rod to rotate, and through the rotation thickness measurement method, the thickness measurement data at multiple positions can be obtained. In addition, when the output shaft of the second motor drives the cam to rotate, cooperating with the second spring and the third spring on the contact block, it can convert the rotational motion of the cam into the linear motion of the push plate and the contact block. And under the meshing transmission action of the third gear plate and the second rotating tooth on the contact block, the swing brush can perform a reciprocating rotational motion at a certain angle. During the rotation of the swing brush, it can not only play a corresponding heat dissipation effect, but also generate a downward wind force that can also remove the particulate impurities on the circuit board. The design is reasonable, the measurement environment is stable, the integration performance is strong, and the linkage effect is good.

[0016] (3) A conveyor line is provided. The conveyor line can not only carry and convey the circuit board, but also facilitate reaching the corresponding position points for corresponding cleaning and pressing work, as well as the stable progress of the thickness measurement work, ensuring the stability of data detection and facilitating the subsequent collection and processing by personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is the structural schematic diagram of the continuous laser thickness measurement device for wet film and dry film of the present invention Figure 1 ; Figure 2 is the structural schematic diagram of the continuous laser thickness measurement device for wet film and dry film of the present invention Figure 2 ; Figure 3 is the front view of the continuous laser thickness measurement device for wet film and dry film of the present invention; Figure 4 is the present invention Figure 2 enlarged view of part A; Figure 5 is the meshing transmission schematic diagram of the first rotating tooth of the present invention; Figure 6It is a schematic structural diagram of the strip board of the present invention; Figure 7 It is an internal schematic diagram of the box body of the present invention; Figure 8 It is the present invention Figure 7 Enlarged view of part B.

[0019] Reference numerals: 1, conveyor line; 2, carrier table; 3, pressing and cleaning mechanism; 4, fixed block; 5, slider; 6, first cylinder; 7, first spring; 8, strip board; 9, pressing roller; 10, first motor; 11, rotating wheel; 12, first conveyor belt; 13, ventilation hole; 14, first blade; 15, bracket; 16, ventilation shielding mechanism; 17, synchronizing rod; 18, cover body; 19, first gear plate; 20, first rotating tooth; 21, second gear plate; 22, shielding plate; 23, temperature adjusting and thickness measuring mechanism; 24, U-shaped frame; 25, second cylinder; 26, box body; 27, second motor; 28, cam; 29, steering rod; 30, laser thickness gauge; 31, pushing plate; 32, abutting block; 33, second spring; 34, third spring; 35, third gear plate; 36, first movable shaft; 37, second rotating tooth; 38, swinging brush; 39, second conveyor belt; 40, second movable shaft; 41, second blade; 42, cross beam. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Refer to the attached description Figure 1 and the attached Figure 2 As shown, the continuous laser thickness measuring device for wet and dry coatings includes: a conveyor line 1, which is installed on a frame and extends along a preset direction for carrying and conveying a carrier table 2; The pressing and cleaning mechanism 3 includes fixed blocks 4 placed on both sides of the top of the frame, a slide groove is provided on the fixed block 4 and a slider 5 is movably connected thereto, the top of the slider 5 is connected to a piston rod installed at the bottom of the first cylinder 6, and the bottom of the slider 5 is connected to the strip plate 8 through a first spring 7, the strip plate 8 and the fixed block 4 are integrally formed, and a pressure roller 9 is movably connected between the sliders 5; wherein, a first motor 10 is installed at the center of the outer wall of the strip plate 8 through a first supporting plate, the output shaft of the first motor 10 and the rotating wheels 11 at both ends are connected through a first conveyor belt 12 for transmission, one end of the rotating wheel 11 passes through the strip plate 8 and extends to the ventilation hole 13 inside the strip plate 8, the outer wall of the rotating wheel 11 is connected to a first blade 14 adapted thereto, and the rotating wheel 11 is connected to a bracket 15 distributed in an annular manner at the ventilation hole 13 through a bearing.

[0022] Specifically, the pressing and cleaning mechanism 3 is essentially to clean the surface of the circuit board by blowing air when adjusting the flatness of the dry and wet films on the circuit board, thereby ensuring the cleanliness of the circuit board. Moreover, the bearing connected to the bracket 15 at the ventilation hole 13 can not only support and connect the rotating wheel 11, but also increase the corresponding activity space for the movement of the rotating wheel 11, thereby ensuring the free movement of the rotating wheel 11.

[0023] The wrap angles between the first conveyor belt 12 and the output shaft of the first motor 10 and the rotating wheel 11 are designed to be greater than 120 degrees, which can reduce the possibility of slipping. Slipping is caused by overload or insufficient friction, which will seriously affect the efficiency of the transmission. The contact area between the first conveyor belt 12 and the transmission wheel is increased, thereby ensuring the stability of the transmission by increasing the friction.

[0024] When the slider 5 moves on the vertical slide groove, it can not only guide the movement of the slider to prevent deviation during the movement of the slider 5, but also cooperate with the first spring 7 to play a better buffering and regulating role when the slider 5 collides with the top of the strip plate 8, thereby effectively increasing the safety of the device.

[0025] refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 , the ventilation shielding mechanism 16 includes a synchronization rod 17 installed on the slider 5, the bottom of the synchronization rod 17 passes through the cover 18 and extends to the first gear plate 19, the outer wall of the first gear plate 19 is meshed with a first rotating tooth 20, and the upper and lower ends of the first rotating tooth 20 are meshed with a second gear plate 21 that moves in the opposite direction, and the extending end of the second gear plate 21 is connected to a shielding plate 22 placed at the ventilation hole 13.

[0026] The strip plate 8 is provided with a strip groove in the length direction thereof which is connected to the extending end of the second gear plate 21. The top of the shielding plate 22 is provided with a plugging portion and is connected to the extending end of the second gear plate 21 by means of plugging and fixing. The first gear plate 19 and the second gear plate 21 are vertically and staggeredly arranged.

[0027] The pressing and cleaning mechanism 3 and the ventilation shielding mechanism 16 are provided. When the first air cylinder 6 drives the slider 5 to move downward, the pressing roller 9 can press the circuit board on the bearing table 2, so as to ensure the flatness of the dry and wet films on the circuit board, prevent the occurrence of wrinkling phenomena, which is beneficial to the accuracy of the thickness measurement data. In addition, when the slider 5 moves downward, it can drive the first gear plate 19 to move downward. Under the action of gear meshing transmission, it can drive the rotation of the first rotating tooth 20, and can transmit the acting force to the second gear plates 21 at both ends. During the movement of the second gear plate 21, it can drive the shielding plate 22 to move synchronously, thereby opening the ventilation holes 13. Cooperating with the first motor 10, under the driving action of the conveyor belt, it can drive the rotating wheels 11 at both ends to move, so that the first blades 14 can play a role of blowing and cleaning, preventing particulate impurities from falling onto the circuit board, further improving the accuracy of the thickness measurement data. At the same time, when the first air cylinder 6 drives the piston rod to move upward, it can drive the shielding plate 22 to close the ventilation holes 13, preventing dust from falling inside the strip plate 8 when it is not in use, ensuring the cleanliness of the device during use.

[0028] The cover body 18 is arranged in a cross shape, and the bottom of the cover body 18 is fixed on the frame through a panel. The synchronous rod 17 is provided with a guiding hole at the top of the cover body 18. A pressing cavity is formed between the pressing roller 9 and the bearing table 2. Both ends of the outer wall of the slider 5 are connected with protruding parts, and the protruding parts are connected with embedding openings along the height direction of the side wall of the sliding groove.

[0029] Specifically, the embedding openings on the sliding groove have a corresponding guiding effect on the movement of the slider 5, and the guiding holes on the cover body 18 provide a free movement space for the up and down movement of the synchronous rod 17. The vertical and staggered arrangement of the first gear plate 19 and the second gear plate 21 can avoid interference phenomena during the movement of the transmission parts, ensuring that the transmission parts can move freely and normally. At the same time, the cover body 18 arranged in a cross shape can provide corresponding supporting and moving spaces for both the first gear plate 19 and the second gear plate 21, and can also ensure the free movement of the extending end of the second gear plate 21.

[0030] Reference Figure 7 and Figure 8, the continuous laser thickness measuring device for the coated wet film and dry film further includes a temperature-adjusting thickness measuring mechanism 23. The temperature-adjusting thickness measuring mechanism 23 includes a U-shaped frame 24 fixed on the frame. Both sides of the top of the U-shaped frame 24 are connected with second cylinders 25. The piston rods at the bottoms of the second cylinders 25 penetrate through the U-shaped frame 24 and extend into the box body 26. The bottom of the box body 26 is provided with a storage opening, and a second motor 27 is installed at the center of the top of the box body 26. The output shaft of the second motor 27 extends to the cam 28 and the steering rod 29 in sequence. A laser thickness gauge 30 is detachably installed at the bottom of the steering rod 29.

[0031] Both ends of the outer wall of the cam 28 are in contact and fit with the push plate 31. The push plate 31 and the abutting block 32 are connected by a second spring 33. One end of the abutting block 32 is connected by a third spring 34 near the inner wall of the box body 26. And a third gear plate 35 is integrally formed and installed at the bottom of the abutting block 32. The third gear plate 35 is in transmission engagement with a second rotating tooth 37 fixed on the first movable shaft 36. Rolling grooves are provided at both ends of the first movable shaft 36 at the edges of the inner wall of the box body 26. A swinging brush 38 adapted to it is installed on the outer wall of the first movable shaft 36.

[0032] Specifically, the swinging brush 38 is vertically arranged with respect to the abutting block 32. And an opening is connected near the second rotating tooth 37 at the top of the swinging brush 38. An activity cavity is formed between the cam 28 and the push plate 31 inside the box body 26. After the second motor 27 is started, it can drive the rotation of the cam 28. Cooperating with the abutting block 32 on the third spring 34, during the process of contacting and fitting with the push plate 31, the rotational motion of the cam 28 can be converted into the linear motion of the abutting block 32. And under the action of gear meshing transmission, the swinging brush 38 on the first movable shaft 36 can be driven to rotate back and forth at a certain angle. During the movement of the swinging brush 38, not only can the impurity particles on the circuit board be removed to the outside by the action of the swinging wind force, but also the impurity particles on the circuit board can be subjected to secondary cleaning work during the fitting and cleaning process, further ensuring the cleanliness of the surface of the circuit board.

[0033] Extendedly speaking, the laser thickness gauge 30 uses the reflection of laser to measure the thickness of an object. Simply put, the laser thickness gauge emits a laser beam onto the object, and then receives the reflected optical signal. By measuring the changes in the positions of some light spots during this process, the thickness of the object can be calculated.

[0034] A temperature regulating thickness measuring mechanism 23 is provided. After the second cylinder 25 is started, it can drive the box body 26 to move up and down. In cooperation with the receiving port at the bottom of the box body 26, it can form a relatively sealed environment with the carrier 2, thereby ensuring a dustproof effect that can measure the thickness for a long time. After the second motor 27 is started, it can drive the second blade 41 on the second movable shaft 40 to rotate and dissipate heat through the transmission effect of the conveyor belt, so that the heat inside the box body 26 can be discharged in time to prevent the temperature inside the box body 26 from being too high, thereby forming an environment with a relatively constant temperature. In addition, the second motor 27 can drive the laser thickness gauge 30 on the steering rod 29 to rotate, and the thickness measurement can be performed by rotating. Thickness measurement data at multiple positions can be obtained. In addition, when the output shaft of the second motor 27 drives the cam 28 to rotate, the second spring 33 and the third spring 34 on the resistance block 32 can convert the rotational motion of the cam 28 into the linear motion of the push plate 31 and the resistance block 32. Moreover, the meshing transmission effect of the third gear plate 35 and the second rotating tooth 37 on the resistance block 32 can allow the oscillating brush 38 to perform a reciprocating rotation motion at a certain angle. During the rotation of the oscillating brush 38, it can not only have a corresponding heat dissipation effect, but also generate downward wind force, which can also clear the particulate impurities on the circuit board. The design is reasonable, the measurement environment is stable, the integrated performance is strong, and the linkage effect is good.

[0035] The upper and lower ends of the outer wall of the output shaft of the second motor 27 are transmission connected to the second movable shaft 40 through the second conveyor belt 39, and the second movable shaft 40 is equipped with a second blade 41 placed at the notch of the box body 26, and the bottom of the second movable shaft 40 is equipped with a crossbeam 42 fixed to the side wall of the box body 26 through a second support plate, and the top of the second support plate is provided with an annular groove connected to the second movable shaft 40, and the annular groove is symmetrically arranged relative to the center of the box body 26.

[0036] A positioning ring is provided on the second support plate at the edge of the outer wall of the annular groove, a positioning hole is provided between one end of the cross beam 42 and the inner wall of the box body 26, and a bolt assembly is used to realize locking and fixing. By extension, a ball connected to the second movable shaft 40 can be added to the bottom of the inner wall of the annular groove, so that the rotation of the second movable shaft 40 can be realized by rolling friction, and the transmission by rolling friction can effectively reduce friction, reduce friction damage, and increase the service life of the device. Since the ball assembly is a conventional technical means for technical personnel in this field, it is not drawn in the drawings of the specification, but it does not affect the effective implementation of the technical solution of this patent.

[0037] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0038] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. Continuous laser thickness measuring equipment for wet and dry coatings, characterized in that, include: A conveyor line (1), the conveyor line (1) being mounted on a frame and extending along a preset direction, and being used to carry and convey a carrying platform (2); A pressing and cleaning mechanism (3), the pressing and cleaning mechanism (3) comprising fixed blocks (4) disposed on both sides of the top of a frame, the fixed blocks (4) being provided with a slide groove and movably connected to a slider (5), the top of the slider (5) being connected to a piston rod mounted on the bottom of a first cylinder (6), and the bottom of the slider (5) being connected to a strip plate (8) via a first spring (7), the strip plate (8) and the fixed blocks (4) being integrally formed, and a pressure roller (9) being movably connected between the sliders (5); A first motor (10) is installed at the center of the outer wall of the strip plate (8) via a first support plate, the output shaft of the first motor (10) and the rotating wheels (11) at both ends are connected by transmission via a first conveyor belt (12), one end of the rotating wheel (11) passes through the strip plate (8) and extends to a ventilation hole (13) inside the strip plate (8), the outer wall of the rotating wheel (11) is connected to a first blade (14) matched therewith, and the rotating wheel (11) is connected to a bracket (15) arranged in an annular manner at the ventilation hole (13) via a bearing; A ventilation shielding mechanism (16), the ventilation shielding mechanism (16) comprising a synchronization rod (17) mounted on a slider (5), the bottom of the synchronization rod (17) passing through a cover body (18) and extending to a first gear plate (19), the outer wall of the first gear plate (19) being meshed with a first rotating tooth (20), the upper and lower ends of the first rotating tooth (20) being meshed with a second gear plate (21) moving in the opposite direction, and the extending end of the second gear plate (21) being connected to a shielding plate (22) disposed at the ventilation hole (13).

2. The continuous laser thickness measuring device for coated wet film and dry film according to claim 1, wherein The strip plate (8) is provided with a strip groove connected to the extended end of the second gear plate (21) in the length direction, and a plug-in portion is installed on the top of the shielding plate (22) and is connected to the extended end of the second gear plate (21) by plugging and fixing, and the first gear plate (19) and the second gear plate (21) are vertically staggered.

3. The continuous laser thickness measuring device for coated wet film and dry film according to claim 1, wherein The device also comprises a temperature-adjusting and thickness-measuring mechanism (23), the temperature-adjusting and thickness-measuring mechanism (23) comprising a U-shaped frame (24) fixed on the frame, the top of the U-shaped frame (24) being connected to a second cylinder (25) on both sides, the piston rod at the bottom of the second cylinder (25) passing through the U-shaped frame (24) and extending into a box body (26), the bottom of the box body (26) being provided with a receiving opening, and a second motor (27) being installed at the center of the top of the box body (26), the output shaft of the second motor (27) extending to a cam (28) and a steering rod (29) in sequence, and a laser thickness gauge (30) being detachably installed at the bottom of the steering rod (29).

4. The continuous laser thickness measuring device for coated wet film and dry film according to claim 3, characterized in that, Both ends of the outer wall of the cam (28) are in contact with and fit on the push plate (31); the push plate (31) and the resistance block (32) are connected via a second spring (33); one end of the resistance block (32) is connected to the inner wall of the box body (26) via a third spring (34); a third gear plate (35) is integrally formed and installed at the bottom of the resistance block (32); a second rotating tooth (37) fixed to the first movable shaft (36) is transmission-engaged at the bottom of the third gear plate (35); rolling grooves are arranged on the inner wall edge of the box body (26) at both ends of the first movable shaft (36); and an oscillating brush (38) matching the first movable shaft (36) is installed on the outer wall of the first movable shaft (36).

5. The continuous laser thickness measuring device for coated wet and dry films according to claim 4, characterized in that, The oscillating brush (38) and the abutment block (32) are arranged vertically, and an opening is connected to the top of the oscillating brush (38) near the second rotating tooth (37). An active cavity is formed between the cam (28) and the push plate (31) and is placed inside the box body (26).

6. The continuous laser thickness measuring device for coated wet and dry films according to claim 3, wherein The upper and lower ends of the outer wall of the output shaft of the second motor (27) are transmission-connected to the second movable shaft (40) via a second conveyor belt (39); the second movable shaft (40) is provided with a second blade (41) disposed at a notch of the box body (26); the bottom of the second movable shaft (40) is provided with a crossbeam (42) fixed to the side wall of the box body (26) via a second support plate; the top of the second support plate is provided with an annular groove connected to the second movable shaft (40); the annular groove is symmetrically arranged relative to the center of the box body (26).

7. The continuous laser thickness measuring device for coated wet film and dry film according to claim 6, characterized in that, The outer wall edge of the annular groove is provided with a positioning ring placed on the second support plate, and a positioning hole is provided between one end of the crossbeam (42) and the inner wall of the box body (26) and is locked and fixed by a bolt assembly.

8. The continuous laser thickness measuring device for coated wet film and dry film according to claim 1, characterized in that The cover body (18) is arranged in a cross shape, and the bottom of the cover body (18) is fixed to the frame through a panel, the synchronization rod (17) is provided with a guide hole placed on the top of the cover body (18), a pressing cavity is formed between the pressing roller (9) and the supporting platform (2), and both ends of the outer wall of the slider (5) are connected to protrusions, and the protrusions are connected to an embedding opening along the height direction of the side wall of the slide groove.

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