A haze meter for detecting production of a thermal insulation film

Abstract

The application relates to the technical field of light transmittance detection devices, and discloses a haze meter for heat insulation film production detection, which is used to solve the problem of wrinkles or distortion of the heat insulation film in the magnetic clamp and dust on the heat insulation film affecting the detection accuracy. When the magnetic clamp with the heat insulation film is slid from the support frame to the detection position of the light receiving device, the rack drive gear on the light receiving device drives the threaded column and the sliding block to rotate, and the threaded column and the sliding block slide in the negative pressure groove, so that negative pressure is generated in the negative pressure groove and the rubber air ring, the negative pressure hole on the rubber air ring adsorbs the heat insulation film, under the action of the negative pressure, the rubber air ring contracts, the negative pressure hole of the rubber air ring adsorbs the heat insulation film to move to the outer edge, so that the wrinkled or distorted heat insulation film is flattened, and the accuracy of the detection result is prevented from being affected by the wrinkled or distorted heat insulation film.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of light transmittance detection devices, in particular to a haze meter for production detection of heat insulation films. BACKGROUND

[0002] The automobile film is a thin film-shaped object pasted on the front windshield, rear windshield, side window and sunroof of a vehicle, and the thin film-shaped object is also called a solar film or heat insulation film. The production process of the heat insulation film involves multiple precise steps, generally including substrate preparation, coating process, multi-layer compounding, magnetron sputtering or vacuum coating, surface treatment, glue coating and drying, die cutting, quality detection and the like. In the process of detecting the optical performance of the heat insulation film, the haze meter is needed to detect the haze of the heat insulation film to ensure the clarity of the high light transmittance film.

[0003] Since the heat insulation film is a flexible material and does not have rigid support, the magnetic clamp of the haze meter is needed to clamp and fix the heat insulation film during detection. However, when the heat insulation film is clamped by the inner ring and the outer ring of the magnetic clamp, the heat insulation film between the inner ring and the outer ring will have some wrinkles or distortions, and the wrinkled or distorted heat insulation film will affect the accuracy of the detection result. In addition, the surface of the heat insulation film will be contaminated with dust, and when the light passes through the heat insulation film with dust, the dust on the heat insulation film will also affect the light transmittance. SUMMARY

[0004] The application provides a haze meter for production detection of heat insulation films, which has the advantages of automatically flattening the heat insulation film and preventing dust on the heat insulation film from affecting the detection accuracy, so as to solve the problems of wrinkles or distortions of the heat insulation film in the magnetic clamp and dust on the heat insulation film affecting the detection accuracy.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical scheme: a haze meter for production detection of heat insulation films, comprising a bottom plate, a light emitting device, a light receiving device and a support frame, the light receiving device is fixedly provided with a support frame and two racks, a magnetic clamp is slidably arranged in the middle of the support frame, the magnetic clamp comprises an inner ring and an outer ring, the inner ring is clamped in the outer ring, the outer ring is provided with: a negative pressure groove opened in the side wall of the upper end and the lower end of the outer ring; a sliding block is slidably and sealingly arranged in the negative pressure groove; a threaded column is fixedly connected to one end of the sliding block and extends through the side wall of the outer ring and protrudes from the negative pressure groove, the threaded column is threadedly connected with the penetration position of the outer ring; a gear is fixedly connected to one end of the threaded column protruding from the negative pressure groove, the gear is engaged with the rack; a rubber air ring is arranged between the inner ring and the outer ring and communicates with the bottom end of the negative pressure groove, a plurality of negative pressure holes are formed in the side wall of the inner ring facing the rubber air ring; two cleaning mechanisms for cleaning the heat insulation film in the magnetic clamp are fixedly arranged on the light receiving device.

[0006] Further, the side wall of the outer ring is embedded with a balance valve, which is communicated with the rubber air ring.

[0007] Further, a centralizer ring is fixedly installed on the inner wall of the outer ring, which is tightly attached to the outer side wall of the rubber air ring.

[0008] Further, the cleaning mechanism comprises: a shell fixedly installed on the side wall of the light receiving device, the openings of the two shells are opposite; an air bag fixedly installed at the bottom end of the shell; a pressing block slidingly installed in the shell, one side of which is fixedly connected with the air bag, and the other side of which extends out of the shell and is tightly attached to the end face of the gear; a jet pipe, one end of which is communicated with the air bag, and the other end of which is connected with a pressure relief valve, the pressure relief valve on the jet pipe is directed towards the detection hole of the light receiving device, and the pressure relief openings of the pressure relief valves on the two jet pipes are opposite; and a gas supplement valve fixedly embedded on the outer wall of the shell and communicated with the air bag.

[0009] Further, the air bag is provided with a supporting spring, and the flow direction of the gas supplement valve is from the outside to the air bag.

[0010] Further, the outer ring is tightly attached to the side wall of the light receiving device and is provided with a foreign matter removing groove.

[0011] Further, the end face of the light emitting device directed towards the light receiving device and the two end faces of the light receiving device are fixedly installed with support frames, the middle of each support frame is slidingly provided with a dustproof plate, one side of the dustproof plate is fixedly connected with a connecting rod, a plurality of connecting rods are fixedly connected, the side wall of the dustproof plate is fixedly connected with a return spring, and the other end of the return spring is fixedly connected with the support frame.

[0012] Further, the pressing block is tightly attached to the side wall of the dustproof plate and is provided with a sliding groove, the middle positions of the upper end face and the lower end face of the dustproof plate are provided with a moving groove, a moving block is slidingly installed in the moving groove, the other end of the moving block extends out of the moving groove, the moving block extending out of the moving groove is slidingly installed in the sliding groove, fixed columns are fixedly installed on both sides of the moving block in the moving groove, a through hole is formed in the dustproof plate above the fixed columns, and a fixed hole is formed in the side of the support frame close to the connecting rod.

[0013] Further, the width of the moving groove is the same as the width of the moving block, and the moving block can slide in the depth direction of the moving groove.

[0014] The present application has the following beneficial effects:

[0015] 1. The haze meter for heat insulation film production detection provided by the application, when the magnetic clamp with the heat insulation film is slid from the support frame to the detection position of the light receiving device, the rack drive gear on the light receiving device drives the threaded column and the sliding block to rotate, and the threaded column and the sliding block slide in the negative pressure groove, so that negative pressure is generated in the negative pressure groove and the rubber air ring, thereby causing the negative pressure holes on the rubber air ring to adsorb the heat insulation film. Under the action of negative pressure, the rubber air ring contracts, causing the negative pressure holes of the rubber air ring to move to the outer edge of the heat insulation film, thereby flattening the wrinkled or twisted heat insulation film and preventing the wrinkles or twists of the heat insulation film from affecting the accuracy of the detection results.

[0016] 2. The haze meter for heat insulation film production detection provided by the application, when the threaded column and the gear rotate upwards, the gear pushes the extrusion block, the extrusion block extrudes the air bag, the gas pressure in the air bag increases, and when the pressure reaches a certain size, the gas is discharged through the jet pipe and the pressure relief valve on the jet pipe, which blows to both sides of the heat insulation film and cleans both sides of the heat insulation film, preventing dust from adhering to the heat insulation film and affecting the accuracy of the detection results.

[0017] 3. The haze meter for heat insulation film production detection provided by the application, when the magnetic clamp slides to the detection position of the light receiving device, the magnetic clamp pushes the multiple dustproof plates to move synchronously, thereby pushing the dustproof plates away. When the magnetic clamp is removed, the dustproof plates are reset under the action of the reset spring, thereby saving the steps of taking and placing the dustproof plates, and preventing the detection positions of the light emitting device and the light receiving device from being exposed to the external environment for a long time, causing dust to fall in.

[0018] 4. The haze meter for heat insulation film production detection provided by the application, when the gear pushes the extrusion block to extrude the air bag, the extrusion block drives the moving block to move synchronously. When the extrusion block extrudes the air bag to a certain position, the moving block drives the fixed column to be clamped into the fixed hole, thereby causing the fixed column to fix the dustproof plate, preventing the dustproof plate from resetting during detection, causing the heat insulation film on the magnetic clamp to shift. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which constitute a part of this specification, illustrate embodiments of the present disclosure and serve to explain the principles of the present disclosure.

[0020] The present disclosure can be more clearly understood and appreciated from the following detailed description, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0022] Figure 2 is a schematic diagram of the structure of the magnetic clamp pushing to the detection position of the light receiving device of the present application;

[0023] Figure 3Structure diagram of the magnetic clamp of the present application;

[0024] Figure 4 Structure diagram of the magnetic clamp of the present application;

[0025] Figure 5 Structure diagram of the magnetic clamp of the present application Figure 4 Enlarged diagram of the local structure at A in the present application;

[0026] Figure 6 Structure diagram of the support frame of the present application;

[0027] Figure 7 Structure diagram of the light receiving device of the present application

[0028] Figure 8 Structure diagram of the light receiving device of the present application Figure 7 Enlarged diagram of the local structure at B in the present application;

[0029] Figure 9 Structure diagram of the light receiving device of the present application

[0030] Figure 10 Structure diagram of the light receiving device of the present application Figure 9 Enlarged diagram of the local structure at C in the present application.

[0031] In the figure: 1, bottom plate; 2, light emitting device; 3, light receiving device; 31, rack; 4, support frame; 41, connecting rod; 42, return spring; 43, fixing hole; 5, dustproof plate; 51, moving groove; 52, moving block; 53, fixed column; 54, through hole; 6, magnetic clamp; 61, inner ring; 62, outer ring; 621, negative pressure groove; 622, sliding block; 623, threaded column; 624, gear; 625, rubber air ring; 626, negative pressure hole; 627, balance valve; 628, centralizing ring; 7, cleaning mechanism; 71, shell; 72, air bag; 73, extrusion block; 731, sliding groove; 74, air jet pipe; 75, air supplement valve. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. Embodiment 1

[0033] Please refer to Figure 1 , Figure 2 and Figure 6The application discloses a haze meter for insulating film production detection, which comprises a bottom plate 1, a light emitting device 2, a light receiving device 3 and a support frame 4.

[0034] Please refer to Figures 1-5 The light receiving device 3 is fixedly installed with two parallel racks 31 on the side wall facing the light emitting device 2, and the upper side and the lower side of the support frame 4 are respectively provided with a rack 31; a magnetic clamp 6 for clamping the insulating film is slidingly arranged at the middle position of the support frame 4, the magnetic clamp 6 comprises an inner ring 61 and an outer ring 62, the inner ring 61 is clamped in the outer ring 62, and an annular space is formed between the inner ring 61 and the outer ring 62; a vertical negative pressure groove 621 is formed in the side wall of the upper end and the lower end of the outer ring 62, a sliding block 622 is slidingly and sealingly installed in the negative pressure groove 621, a threaded column 623 is fixedly connected to the sliding block 622, the threaded column 623 penetrates through the side wall of the outer ring 62 and extends out of the negative pressure groove 621, the threaded column 623 is threadedly connected to the penetration position of the outer ring 62, a gear 624 is fixedly connected to one end of the threaded column 623 extending out of the negative pressure groove 621, the gear 624 is engaged with the rack 31 on the light receiving device 3, a rubber air ring 625 is arranged in the annular space of the inner ring 61 and the outer ring 62, the rubber air ring 625 is communicated with the bottom end of the negative pressure groove 621, and the side wall of the rubber air ring 625 is fixedly connected to the inner wall of the outer ring 62; a plurality of negative pressure holes 626 arranged in a ring array are formed in the side wall of the rubber air ring 625 facing the inner ring 61.

[0035] After the heat insulation film is clamped between the inner ring 61 and the outer ring 62, the two threaded columns 623 on the upper and lower outer rings 62 are inserted into the support frame 4, the gears 624 on the threaded columns 623 are engaged with the gear racks 31 on the light receiving device 3, at this time, the magnetic clamp 6 is pushed to move to the position of the detection hole of the light receiving device 3, due to the engagement of the gears 624 and the gear racks 31, the gears 624 drive the sliding blocks 622 to rotate, at the same time, due to the threaded connection between the threaded columns 623 and the outer rings 62, the gears 624, the threaded columns 623 and the sliding blocks 622 rotate, and at the same time, the sliding blocks 622 move away from the rubber air ring 625, the negative pressure groove 621 generates negative pressure, due to the communication between the rubber air ring 625 and the negative pressure groove 621, the rubber air ring 625 synchronously forms negative pressure, at this time, the negative pressure holes 626 on the rubber air ring 625 adsorb the heat insulation film, when the negative pressure in the negative pressure groove 621 and the rubber air ring 625 reaches a certain degree, the negative pressure overcomes the strength of the rubber air ring 625, the rubber air ring 625 becomes flat, and the side of the rubber air ring 625 with the negative pressure holes 626 pulls the heat insulation film to move to the edge, so that the wrinkled or twisted heat insulation film is pulled flat, and the accuracy of the detection result is prevented from being affected by the wrinkled or twisted heat insulation film.

[0036] Please refer to Figure 3 and Figure 4 , the side wall of the outer ring 62 is embedded with a balance valve 627, and the balance valve 627 is in communication with the rubber air ring 625; the balance valve 627 is used for balancing the pressure in the rubber air ring 625, when the heat insulation film between the inner ring 61 and the outer ring 62 has no wrinkles or twists, the gas in the rubber air ring 625 is sucked into the negative pressure groove 621, when the rubber air ring 625 becomes flat, the negative pressure holes 626 on the rubber air ring 625 cannot pull the heat insulation film to move, at this time, the external gas enters the rubber air ring 625 through the balance valve 627, and the rubber air ring 625 is compensated by the gas, so that the rubber air ring 625 is prevented from generating excessive negative pressure and causing the heat insulation film to be pulled and damaged by the negative pressure holes 626 on the rubber air ring 625.

[0037] Please refer to Figure 4 and Figure 5 , the inner wall of the outer ring 62 is fixedly installed with a centralizing ring 628, the centralizing ring 628 tightly abuts the outer side wall of the rubber air ring 625, and the centralizing ring 628 is used for centralizing the rubber air ring 625 and preventing the rubber air ring 625 from being skewed.

[0038] The working principle of the embodiment one of the present application is as follows:

[0039] Please refer to Figures 1-6After the heat insulation film is clamped between the inner ring 61 and the outer ring 62, the two threaded columns 623 on the upper and lower sides of the outer ring 62 are inserted into the support frame 4, the gears 624 on the threaded columns 623 are engaged with the toothed strips 31 on the light receiving device 3, at this time, the magnetic clamp 6 is pushed to move to the position of the detection hole of the light receiving device 3, due to the engagement of the gears 624 and the toothed strips 31, the gears 624 and the threaded columns 623 drive the sliding blocks 622 to rotate, at the same time, due to the threaded connection between the threaded columns 623 and the outer ring 62, the rotation of the gears 624, the threaded columns 623 and the sliding blocks 622 drives the sliding blocks 622 to move away from the rubber air ring 625, the negative pressure is generated in the negative pressure groove 621, due to the communication between the rubber air ring 625 and the negative pressure groove 621, the negative pressure is synchronously formed in the rubber air ring 625, at this time, the negative pressure hole 626 on the rubber air ring 625 adsorbs the heat insulation film, when the negative pressure in the negative pressure groove 621 and the rubber air ring 625 reaches a certain degree, the negative pressure overcomes the strength of the rubber air ring 625 itself, the rubber air ring 625 becomes flat, the side of the rubber air ring 625 where the negative pressure hole 626 exists pulls the heat insulation film to move to the edge, so that the wrinkled or twisted heat insulation film is flattened, preventing the wrinkled or twisted heat insulation film from affecting the accuracy of the detection result. Example 2

[0040] Example two is further improved on the basis of example one.

[0041] Different from example one, referring to Figure 1 , Figure 2 , Figure 7 and Figure 8 , the end surface of the light receiving device 3 facing the light emitting device 2 is fixedly installed with two cleaning mechanisms 7 for cleaning the heat insulation film in the magnetic clamp 6, and the two cleaning mechanisms 7 are respectively located on the upper side and the lower side of the magnetic clamp 6, the cleaning mechanism 7 includes a shell 71, an air bag 72, an extrusion block 73, a gas jet pipe 74 and a gas supplement valve 75, the shell 71 is fixedly installed on the side wall of the light receiving device 3, and the upper shell 71 is tightly attached to the upper side of the upper toothed strip 31, and the lower shell 71 is tightly attached to the lower side of the lower toothed strip 31, the openings of the two shells 71 are opposite, the bottom end of the shell 71 is fixedly installed with the air bag 72, and the extrusion block 73 is slidably installed in the shell 71, one side of the extrusion block 73 is fixedly connected with the air bag 72, the other side of the extrusion block 73 extends out of the shell 71 and tightly abuts against the end surface of the gear 624, the side wall of the shell 71 is fixedly connected with the gas jet pipe 74, one end of the gas jet pipe 74 is communicated with the air bag 72, the other end of the gas jet pipe 74 is connected with a pressure relief valve, the pressure relief valve on the gas jet pipe 74 faces the detection hole of the light receiving device 3, the two gas jet pipes 74 are located on the two sides of the vertical plane where the support frame 4 is located, and the pressure relief openings of the pressure relief valves on the two gas jet pipes 74 are opposite, the gas supplement valve 75 is fixedly embedded on the outer wall of the shell 71, and the gas supplement valve 75 is communicated with the air bag 72;

[0042] The magnetic clamp 6 is pushed to move towards the detection hole of the light receiving device 3. The gear 624 and the threaded column 623 drive the slider 622 to rotate. When the gear 624, the threaded column 623 and the slider 622 move away from the rubber air ring 625, the gear 624 pushes the squeezing block 73, which simultaneously squeezes the air bag 72. The gas in the air bag 72 is compressed and the pressure increases. When the magnetic clamp 6 is about to slide to the detection hole of the light receiving device 3, the pressure in the air bag 72 reaches the pressure relief valve on the jet pipe 74. The gas in the air bag 72 is ejected through the jet pipe 74 and the pressure relief valve on the jet pipe 74, and is sprayed towards both sides of the heat insulation film between the inner ring 61 and the outer ring 62 to clean the dust adhering to both sides of the heat insulation film and prevent dust from affecting the accuracy of the detection results.

[0043] The airbag 72 is equipped with a support spring. The air supply valve 75 allows air to flow from the outside to the inside of the airbag 72. After the airbag 72 is squeezed and the gas is released by the compression block 73, and the magnetic clamp 6 is reset, the compression block 73 is no longer squeezed. The support spring inside the airbag 72 is used to support the expansion of the airbag 72, so that the outside gas enters the airbag 72 through the air supply valve 75 to replenish the gas inside the airbag 72.

[0044] Please see Figure 2 and Figure 3 The outer ring 62 has a cleaning groove on the side wall of the light receiving device 3. After the gas in the airbag 72 is ejected through the jet pipe 74 and the pressure relief valve on the jet pipe 74, it blows towards the heat insulation film between the inner ring 61 and the outer ring 62. After the dust on the side of the heat insulation film that is close to the light receiving device 3 is blown off, it can be discharged through the cleaning groove to prevent the dust from continuing to accumulate.

[0045] The working principle of Embodiment 2 of the present invention is as follows:

[0046] Please see Figures 1-8 The magnetic clamp 6 is pushed to move towards the detection hole of the light receiving device 3. The gear 624 and the threaded column 623 drive the slider 622 to rotate. When the gear 624, the threaded column 623 and the slider 622 move away from the rubber air ring 625, the gear 624 pushes the squeezing block 73, which simultaneously squeezes the air bag 72. The gas in the air bag 72 is compressed and the pressure increases. When the magnetic clamp 6 is about to slide to the detection hole of the light receiving device 3, the pressure in the air bag 72 reaches the pressure relief valve on the jet pipe 74. The gas in the air bag 72 is ejected through the jet pipe 74 and the pressure relief valve on the jet pipe 74, and then sprayed towards both sides of the heat insulation film between the inner ring 61 and the outer ring 62 to clean the dust adhering to both sides of the heat insulation film and prevent dust from affecting the accuracy of the detection results. Example 3

[0047] Example three is a further improvement on the basis of example two.

[0048] Unlike example two, please refer to Figure 1 、 Figure 2 and Figure 6 , the middle of each support frame 4 is slidably provided with a dustproof plate 5, one side of the dustproof plate 5 is fixedly connected with a connecting rod 41, and a plurality of connecting rods 41 are fixedly connected, the side wall of the dustproof plate 5 is fixedly connected with two reset springs 42, the two reset springs 42 are respectively on the upper and lower sides of the connecting rod 41, and the other end of the reset spring 42 is fixedly connected with the support frame 4; during pushing the magnetic clamp 6 holding the heat insulation film to the detection hole position of the light receiving device 3, the magnetic clamp 6 extrudes the dustproof plate 5, so that the dustproof plate 5 no longer blocks the detection hole on the light emitting device 2 and the light receiving device 3, and the detection is completed. When the magnetic clamp 6 is removed, under the left and right of the reset spring 42, the reset spring 42 pushes the dustproof plate 5 to reset, covers the detection hole of the light emitting device 2 and the light receiving device 3, thereby saving the steps of taking and placing the dustproof plate 5, and preventing the detection position of the light emitting device 2 and the light receiving device 3 from being exposed to the external environment for a long time, resulting in dust falling.

[0049] Please refer to Figures 8-10 , the side wall of the extrusion block 73 is provided with a sliding groove 731, and the middle position of the upper end face and the lower end face of the dustproof plate 5 is provided with a moving groove 51, and the other end of the moving block 52 is extended out of the moving groove 51. The moving block 52 slidingly installed in the sliding groove 731, the fixed column 53 is fixedly installed on both sides of the moving block 52 in the moving groove 51, the through hole 54 is opened on the dustproof plate 5 above the fixed column 53, and the fixed hole 43 is opened on one side of the support frame 4 close to the connecting rod 41; when the magnetic clamp 6 is pushed to move to the detection hole position of the light receiving device 3, the gear 624 drives the sliding block 622 to rotate and move away from the rubber air ring 625, the gear 624 pushes the extrusion block 73 to extrude the air bag 72, the extrusion block 73 drives the moving block 52 to move synchronously, and when the extrusion block 73 extrudes the air bag 72 to a certain position (i.e. when the magnetic clamp 6 reaches the detection hole position of the light receiving device 3), the moving block 52 drives the fixed column 53 to be clamped into the through hole 54 and the fixed hole 43, so that the fixed column 53 fixes the dustproof plate 5, preventing the dustproof plate 5 from resetting during detection, resulting in the offset of the heat insulation film on the magnetic clamp 6.

[0050] The width of the moving groove 51 is the same as the width of the moving block 52, which prevents the moving block 52 from moving laterally in the moving groove 51, and the moving block 52 can slide in the depth direction of the moving groove 51, so that the moving block 52 in the moving groove 51 will not be hindered when the moving block 52 is pressed by the pressing block 73, and when the moving block 52 moves to a certain position, the fixed column 53 on the moving block 52 is just clamped into the through hole 54 and the fixed hole 43, and the dustproof plate 5 is limited.

[0051] The working principle of the third embodiment of the present application is as follows:

[0052] Please refer to Figures 1-10 In the process of pushing the magnetic clamp 6 after clamping the heat insulation film to the detection hole position of the light receiving device 3, the magnetic clamp 6 presses the dustproof plate 5, so that the dustproof plate 5 no longer blocks the detection hole on the light receiving device 3 and the light emitting device 2, and when the detection is completed, the magnetic clamp 6 is removed, and under the left and right elastic forces of the reset spring 42, the reset spring 42 pushes the dustproof plate 5 to reset, covers the detection holes of the light emitting device 2 and the light receiving device 3, thereby saving the steps of taking and placing the dustproof plate 5, and preventing the detection position of the light emitting device 2 and the light receiving device 3 from being exposed to the external environment for a long time, which causes dust to fall in;

[0053] When the magnetic clamp 6 is pushed to move to the detection hole position of the light receiving device 3, the gear 624 drives the sliding block 622 to rotate and move away from the rubber air ring 625, the gear 624 pushes the pressing block 73 to press the air bag 72, and the pressing block 73 drives the moving block 52 to move synchronously, when the pressing block 73 presses the air bag 72 to a certain position (i.e. the magnetic clamp 6 reaches the detection hole position of the light receiving device 3), the moving block 52 drives the fixed column 53 to be clamped into the through hole 54 and the fixed hole 43, so that the fixed column 53 fixes the dustproof plate 5, preventing the dustproof plate 5 from resetting during detection, which causes the heat insulation film on the magnetic clamp 6 to deviate.

Claims

1. A haze meter for detecting production of thermal insulation film, comprising a base plate (1), a light emitting device (2), a light receiving device (3) and a support frame (4), characterized in that: The light receiving device (3) is fixedly installed with a support frame (4) and two racks (31), the middle of the support frame (4) is slidably provided with a magnetic clamp (6), the magnetic clamp (6) comprises an inner ring (61) and an outer ring (62), the inner ring (61) is clamped in the outer ring (62), and the outer ring (62) is provided with: A negative pressure groove (621) is formed in the side wall of the upper end and the lower end of the outer ring (62); A sliding block (622) is slidably and sealingly installed in the negative pressure groove (621); A threaded column (623) is fixedly connected to one end of the sliding block (622), and the other end penetrates the side wall of the outer ring (62) and extends out of the negative pressure groove (621), and the threaded column (623) is threadedly connected with the penetration position of the outer ring (62); A gear (624) is fixedly connected to one end of the threaded column (623) extending out of the negative pressure groove (621), and the gear (624) is engaged with the rack (31); A rubber air ring (625) is arranged between the inner ring (61) and the outer ring (62) and communicates with the bottom end of the negative pressure groove (621), and a plurality of negative pressure holes (626) are formed in the side wall of the inner ring (61) facing the inner ring (61); Two cleaning mechanisms (7) for cleaning the heat insulation film in the magnetic clamp (6) are fixedly installed on the light receiving device (3); A balance valve (627) is embedded in the side wall of the outer ring (62), and the balance valve (627) communicates with the rubber air ring (625); A centralizing ring (628) is fixedly installed on the inner wall of the outer ring (62), and the centralizing ring (628) is tightly attached to the outer side wall of the rubber air ring (625); Support frames (4) are fixedly installed on the end face of the light emitting device (2) facing the light receiving device (3) and the two end faces of the light receiving device (3), and a dustproof plate (5) is slidably arranged in the middle of each support frame (4), one side of the dustproof plate (5) is fixedly connected with a connecting rod (41), a plurality of connecting rods (41) are fixedly connected, a side wall of the dustproof plate (5) is fixedly connected with a return spring (42), and the other end of the return spring (42) is fixedly connected with the support frame (4).

2. The haze meter for detecting production of a thermal insulation film according to claim 1, characterized in that: The cleaning mechanism (7) comprises: A shell (71) is fixedly installed on the side wall of the light receiving device (3), and the openings of the two shells (71) are opposite to each other; An air bag (72) is fixedly installed at the bottom end of the shell (71); An extrusion block (73) is slidably installed in the shell (71), one side of the extrusion block (73) is fixedly connected with the air bag (72), the other side of the extrusion block (73) extends out of the shell (71) and tightly abuts against the end face of the gear (624); A gas jet pipe (74) is in communication with the air bag (72) at one end and is provided with a pressure relief valve at the other end, the pressure relief valve on the gas jet pipe (74) faces the detection hole of the light receiving device (3), and the pressure relief openings of the pressure relief valves on the two gas jet pipes (74) are opposite to each other; A gas supplement valve (75) is fixedly embedded on the outer wall of the shell (71) and is in communication with the air bag (72).

3. The haze meter for detecting production of a thermal insulation film according to claim 2, characterized in that: The air bag (72) is provided with a supporting spring, and the flow direction of the gas supplement valve (75) is from the outside to the air bag (72).

4. The haze meter for detecting production of a thermal insulation film according to claim 2, characterized in that: The outer ring (62) is provided with a removal groove close to the side wall of the light receiving device (3).

5. The haze meter for detecting production of a thermal insulation film according to claim 2, characterized in that: The extrusion block (73) is provided with a sliding groove (731) close to the side wall of the dustproof plate (5), the middle position of the upper end face and the lower end face of the dustproof plate (5) is provided with a moving groove (51), the moving block (52) is slidably arranged in the moving groove (51), the other end of the moving block (52) extends out of the moving groove (51), the moving block (52) extending out of the moving groove (51) is slidably arranged in the sliding groove (731), the two sides of the moving block (52) in the moving groove (51) are fixedly provided with the fixed column (53), the dustproof plate (5) above the fixed column (53) is provided with the through hole (54), and the side of the support frame (4) close to the connecting rod (41) is provided with the fixed hole (43).

6. The haze meter for detecting production of a thermal insulation film according to claim 5, characterized in that: The width of the moving groove (51) is the same as the width of the moving block (52), and the moving block (52) can slide in the depth direction of the moving groove (51).

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