Hazinometer for production and detection of heat insulation film

Abstract

The invention relates to the technical field of light transmittance detection devices, and discloses a haze instrument for heat insulation film production detection, which is used for solving the problem that the detection accuracy is influenced by wrinkles or distortion of a heat insulation film in a magnetic clamp and dust on the heat insulation film. When a magnetic clamp with a heat insulation film slides from a support frame to a detection position of a light receiving device, a rack on the light receiving device drives a gear to drive a threaded column and a sliding block to rotate, and the threaded column and the sliding block slide in a negative pressure groove, so that negative pressure is generated in the negative pressure groove and a rubber gas ring; under the action of negative pressure, the rubber gas ring shrinks, and the negative pressure holes of the rubber gas ring adsorb the heat insulation film to move towards the edge of the outer ring, so that the wrinkled or twisted heat insulation film is leveled, and the phenomenon that the accuracy of a detection result is influenced by wrinkling or twisting of the heat insulation film is prevented.

Description

Technical Field

[0001] This application relates to the technical field of light transmittance testing devices, and in particular to a haze meter for testing the production of heat insulation film. Background Technology

[0002] Automotive window tinting involves applying a thin film to the front and rear windshields, side windows, and sunroof of a vehicle. This film is also called solar film or heat insulation film. The production process of heat insulation film involves multiple precise steps, generally including substrate preparation, coating process, multi-layer lamination, magnetron sputtering or vacuum coating, surface treatment, adhesive application and drying, die-cutting, and quality inspection. During the optical performance testing of the heat insulation film, a haze meter is used to measure the haze level to ensure the clarity of the high-transmittance film.

[0003] Because the heat insulation film is a flexible material and does not have rigid support, it needs to be clamped and fixed by the magnetic clamp of the haze meter during testing. However, when the heat insulation film is clamped by the inner and outer rings of the magnetic clamp, some wrinkles or twists may occur in the heat insulation film between the inner and outer rings. The wrinkles or twists of the heat insulation film will affect the accuracy of the test results. In addition, dust will accumulate on the surface of the heat insulation film. When light passes through the dusty heat insulation film, the dust on the film will also affect the light transmittance. Summary of the Invention

[0004] This application proposes a haze meter for testing the production of heat insulation film, which has the advantages of automatically leveling the heat insulation film and preventing dust on the heat insulation film from affecting the accuracy of testing. It is used to solve the problems of wrinkles or twists in the heat insulation film in magnetic fixtures and the impact of dust on the heat insulation film on the accuracy of testing.

[0005] To achieve the above objectives, this application adopts the following technical solution: a haze meter for testing the production of heat insulation film, comprising a base plate, a light emitting device, a light receiving device, and a support frame. The support frame and two racks are fixedly installed on the light receiving device. A magnetic clamp is slidably provided in the middle of the support frame. The magnetic clamp includes an inner ring and an outer ring. The inner ring is clamped inside the outer ring. The outer ring is provided with: a negative pressure groove, which is opened in the side wall at the upper and lower ends of the outer ring; a slider, which is slidably and sealingly installed in the negative pressure groove; a threaded column, one end of which is fixedly connected to the slider, and the other end of which passes through the side wall of the outer ring and extends out of the negative pressure groove. The threaded column is threadedly connected to the point where it passes through the outer ring; a gear, which is fixedly connected to the end of the threaded column that extends out of the negative pressure groove. The gear meshes with the racks; a rubber air ring is provided between the inner ring and the outer ring and communicates with the bottom end of the negative pressure groove. The rubber air ring has several negative pressure holes on the side wall facing the inner ring; two cleaning mechanisms for cleaning the heat insulation film inside the magnetic clamp are fixedly installed on the light receiving device.

[0006] Furthermore, a balance valve is embedded in the side wall of the outer ring, and the balance valve is connected to the rubber air ring.

[0007] Furthermore, a straightening ring is fixedly installed on the inner wall of the outer ring, and the straightening ring is in close contact with the outer wall of the rubber air ring.

[0008] Furthermore, the cleaning mechanism includes: a housing, fixedly installed on the side wall of the light receiving device, with the openings of the two housings facing each other; an airbag, fixedly installed at the bottom end of the housing; a squeezing block, slidably installed inside the housing, with one side fixedly connected to the airbag and the other side extending out of the housing and closely abutting the end face of the gear; a jet pipe, one end of which is connected to the airbag and the other end of which is connected to a pressure relief valve, the pressure relief valve on the jet pipe facing the detection hole of the light receiving device, and the pressure relief ports of the pressure relief valves on the two jet pipes facing each other; and a replenishing air valve, fixedly embedded in the outer wall of the housing and connected to the airbag.

[0009] Furthermore, the airbag is equipped with a support spring, and the air supply valve allows air to flow from the outside to the inside of the airbag.

[0010] Furthermore, the outer ring is provided with a cleaning groove close to the side wall of the light receiving device.

[0011] Furthermore, a support frame is fixedly installed on the end face of the light emitting device facing the light receiving device and on the two end faces of the light receiving device. A dustproof plate is slidably provided in the middle of each support frame. A connecting rod is fixedly connected to one side of the dustproof plate. Several connecting rods are fixedly connected. A return spring is fixedly connected to the side wall of the dustproof plate. The other end of the return spring is fixedly connected to the support frame.

[0012] Furthermore, the extrusion block has a sliding groove on its side wall close to the dustproof plate, and a moving groove is formed at the middle position of the upper and lower ends of the dustproof plate. A moving block is slidably arranged in the moving groove, and the other end of the moving block extends out of the moving groove. The moving block extending out of the moving groove is slidably installed in the sliding groove. Fixing columns are fixedly installed on both sides of the moving block in the moving groove. A through hole is formed on the dustproof plate directly above the fixing column, and a fixing hole is formed on the side of the support frame near the connecting rod.

[0013] Furthermore, 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] This application has the following beneficial effects: 1. The haze meter for testing the production of heat insulation film provided in this application involves sliding a magnetic clamp with heat insulation film from a support frame to the detection position of a light receiving device. The rack and pinion drive gear on the light receiving device drives the threaded column and slider to rotate, and the threaded column and slider slide in the negative pressure groove, generating negative pressure in the negative pressure groove and the rubber air ring. This causes the heat insulation film to be adsorbed by the negative pressure holes on the rubber air ring. Under the action of negative pressure, the rubber air ring contracts, causing the heat insulation film adsorbed by the negative pressure holes of the rubber air ring to move to the outer edge, 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 test results.

[0015] 2. The haze meter for testing the production of heat insulation film provided in this application works by rotating the threaded column and gear upwards, which pushes the extrusion block, which in turn extrudes the air bladder, increasing the gas pressure in the air bladder. When the pressure reaches a certain level, the gas is discharged through the air jet pipe and the pressure relief valve on the air jet pipe. The discharged gas is blown to both sides of the heat insulation film to clean both sides of the heat insulation film and prevent dust from adhering to the heat insulation film, which would affect the accuracy of the test results.

[0016] 3. The haze meter for testing the production of heat insulation film provided in this application, when slid to the detection position of the light receiving device by the magnetic clamp, pushes multiple dustproof plates to move synchronously, thereby pushing the dustproof plates open. When the magnetic clamp is removed, the dustproof plates are reset under the action of the return spring, thereby saving the steps of taking and putting away 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.

[0017] 4. The haze meter for testing the production of heat insulation film provided in this application, when the extrusion block is pushed by the gear to extrude the air bladder, the extrusion block drives the moving block to move synchronously. When the extrusion block extrudes the air bladder to a certain position, the moving block drives the fixing column to be inserted into the fixing hole, thereby fixing the dustproof plate and preventing the dustproof plate from resetting during testing, which would cause the heat insulation film on the magnetic clamp to shift. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0019] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the magnetic clamp of the present invention being pushed to the detection position of the light receiving device; Figure 3 This is a schematic diagram of the structure of the magnetic clamp of the present invention; Figure 4This is a cross-sectional view of the magnetic clamp of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the local structure at point A; Figure 6 This is a schematic diagram of the support frame of the present invention; Figure 7 This is a cross-sectional view of the cleaning structure on the light receiving device of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of the local structure at point B; Figure 9 This is a cross-sectional view of the dustproof plate and cleaning structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of the local structure at point C.

[0020] In the diagram: 1. Base 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. Fixing column; 54. Through hole; 6. Magnetic clamp; 61. Inner ring; 62. Outer ring; 621. Negative pressure groove; 622. Slider; 623. Threaded column; 624. Gear; 625. Rubber air ring; 626. Negative pressure hole; 627. Balance valve; 628. Straightening ring; 7. Cleaning mechanism; 71. Housing; 72. Airbag; 73. Extrusion block; 731. Slide groove; 74. Jet pipe; 75. Air supply valve. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Example 1

[0022] Please see Figure 1 , Figure 2 and Figure 6 A haze meter for testing the production of heat insulation film includes a base plate 1, a light emitting device 2, a light receiving device 3, and a support frame 4. The light emitting device 2 and the light receiving device 3 are fixedly installed on the top of the base plate 1. The axes of the detection holes of the light emitting device 2 and the light receiving device 3 are on the same straight line. The support frame 4 is fixedly installed on the end face of the light emitting device 2 facing the light receiving device 3 and on the two end faces of the light receiving device 3. The detection holes of the light emitting device 2 and the light receiving device 3 are located in the middle of the support frame 4.

[0023] Please see Figures 1-5 Two parallel racks 31 are fixedly installed on the side wall of the light receiving device 3 facing the light emitting device 2. A rack 31 is provided on the upper and lower sides of the support frame 4. A magnetic clamp 6 for holding the heat insulation film is slidably provided in the middle of the support frame 4. The magnetic clamp 6 includes an inner ring 61 and an outer ring 62. The inner ring 61 is engaged within the outer ring 62, and an annular space is formed between the inner ring 61 and the outer ring 62. Vertical negative pressure grooves 621 are formed in the side walls at the upper and lower ends of the outer ring 62. A slider 622 is slidably and sealed within the negative pressure groove 621. A threaded post 623 is fixedly connected to the slider 622. A threaded post 623 penetrates the side wall of the outer ring 62 and extends out of the negative pressure groove 621. The threaded post 623 is threadedly connected to the penetration point of the outer ring 62. A gear 624 is fixedly connected to one end of the threaded post 623 extending out of the negative pressure groove 621. The gear 624 meshes with the rack 31 on the light receiving device 3. A rubber air ring 625 is provided in the annular space of the inner ring 61 and the outer ring 62. The rubber air ring 625 is connected to 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. Several negative pressure holes 626 arranged in an annular array are opened on the side wall of the rubber air ring 625 facing the inner ring 61. After clamping the heat insulation film between the inner ring 61 and the outer ring 62, insert the two threaded posts 623 on the upper and lower parts of the outer ring 62 into the support frame 4. The gears 624 on the threaded posts 623 mesh with the rack 31 on the light receiving device 3. At this time, the magnetic clamp 6 is pushed to move towards the position of the detection hole of the light receiving device 3. Since the gears 624 mesh with the rack 31, the gears 624 and the threaded posts 623 drive the slider 622 to rotate. At the same time, since the threaded posts 623 are threadedly connected to the outer ring 62, the rotation of the gears 624, the threaded posts 623 and the slider 622 causes the slider 622 to move away from the rubber air ring 6. As the pressure moves in the direction of 25, a negative pressure is generated in the negative pressure groove 621. Since the rubber air ring 625 is connected to the negative pressure groove 621, a negative pressure is simultaneously 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 level, the negative pressure overcomes the strength of the rubber air ring 625 itself, and the rubber air ring 625 becomes flat. The side of the rubber air ring 625 with the negative pressure hole 626 pulls the heat insulation film to the edge, 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 test results.

[0024] Please see Figure 3 and Figure 4The outer ring 62 has a balance valve 627 embedded in its side wall, and the balance valve 627 is connected to the rubber gas ring 625. The balance valve 627 is used to balance the pressure inside the rubber gas ring 625. When there are no wrinkles or twists in the heat insulation film between the inner ring 61 and the outer ring 62, the gas in the rubber gas ring 625 is drawn into the negative pressure groove 621. When the rubber gas ring 625 becomes flat, the negative pressure hole 626 on the rubber gas ring 625 cannot pull the heat insulation film to move. At this time, the outside gas enters the rubber gas ring 625 through the balance valve 627 to compensate the gas in the rubber gas ring 625 and prevent the rubber gas ring 625 from generating excessive negative pressure, which would cause the heat insulation film to be damaged by the negative pressure hole 626 on the rubber gas ring 625.

[0025] Please see Figure 4 and Figure 5 A straightening ring 628 is fixedly installed on the inner wall of the outer ring 62. The straightening ring 628 is in close contact with the outer wall of the rubber air ring 625. The straightening ring 628 is used to straighten the rubber air ring 625 and prevent the rubber air ring 625 from being distorted.

[0026] The working principle of Embodiment 1 of the present invention is as follows: Please see Figures 1-6 After the heat insulation film is clamped between the inner ring 61 and the outer ring 62, the two threaded posts 623 on the upper and lower parts of the outer ring 62 are inserted into the support frame 4. The gears 624 on the threaded posts 623 mesh with the rack 31 on the light receiving device 3. At this time, the magnetic clamp 6 is pushed to move towards the position of the detection hole of the light receiving device 3. Since the gears 624 mesh with the rack 31, the gears 624 and the threaded posts 623 drive the slider 622 to rotate. At the same time, since the threaded posts 623 are threadedly connected to the outer ring 62, the rotation of the gears 624, the threaded posts 623 and the slider 622 causes the slider 622 to move away from the rubber air ring 6. As the pressure moves in the direction of 25, a negative pressure is generated in the negative pressure groove 621. Since the rubber air ring 625 is connected to the negative pressure groove 621, a negative pressure is simultaneously 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 level, the negative pressure overcomes the strength of the rubber air ring 625 itself, and the rubber air ring 625 becomes flat. The side of the rubber air ring 625 with the negative pressure hole 626 pulls the heat insulation film to the edge, 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 test results. Example 2

[0027] Example 2 is a further improvement based on Example 1.

[0028] Unlike Example 1, please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8Two cleaning mechanisms 7 are fixedly installed on the end face of the light receiving device 3 facing the light emitting device 2 to clean the heat insulation film inside the magnetic clamp 6. The two cleaning mechanisms 7 are located on the upper and lower sides of the magnetic clamp 6, respectively. The cleaning mechanism 7 includes a housing 71, an airbag 72, a squeezing block 73, a jet pipe 74, and a replenishing valve 75. The housing 71 is fixedly installed on the side wall of the light receiving device 3, with the upper housing 71 close to the upper rack 31 and the lower housing 71 close to the lower rack 31. The openings of the two housings 71 are opposite each other. An airbag 72 is fixedly installed at the bottom of the housing 71, and the housing 71 contains... A compression block 73 is slidably installed. One side of the compression block 73 is fixedly connected to the airbag 72. The other side of the compression block 73 extends out of the housing 71 and is close to the end face of the gear 624. A jet pipe 74 is fixedly connected to the side wall of the housing 71. One end of the jet pipe 74 is connected to the airbag 72. The other end of the jet pipe 74 is connected to a pressure relief valve. The pressure relief valve on the jet pipe 74 faces the detection hole of the light receiving device 3. The two jet pipes 74 are located on both sides of the vertical plane where the support frame 4 is located. The pressure relief ports of the pressure relief valves on the two jet pipes 74 are opposite to each other. A replenishing air valve 75 is fixedly embedded on the outer wall of the housing 71. The replenishing air valve 75 is connected to the airbag 72. 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.

[0029] 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.

[0030] Please see Figure 2 and Figure 3The 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.

[0031] The working principle of Embodiment 2 of the present invention is as follows: 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

[0032] Example 3 is a further improvement based on Example 2.

[0033] Unlike Example 2, please refer to Figure 1 , Figure 2 and Figure 6 Each support frame 4 has a dustproof plate 5 slidably mounted in the middle. A connecting rod 41 is fixedly connected to one side of the dustproof plate 5, and several connecting rods 41 are fixedly connected. Two return springs 42 are fixedly connected to the side wall of the dustproof plate 5. The two return springs 42 are located on the upper and lower sides of the connecting rod 41, respectively. The other end of the return spring 42 is fixedly connected to the support frame 4. During the process of pushing the magnetic clamp 6 holding the heat insulation film towards the detection hole position of the light receiving device 3, the magnetic clamp 6 squeezes the dustproof plate 5, so that the dustproof plate 5 no longer blocks the detection holes on the light receiving device 3 and the light emitting device 2. When the detection is completed and the magnetic clamp 6 is removed, the return spring 42 pushes the dustproof plate 5 to return to its original position under the elastic force of the return spring 42, covering the detection holes of the light emitting device 2 and the light receiving device 3. This saves the steps of taking off and putting away the dustproof plate 5, and prevents the detection positions of the light emitting device 2 and the light receiving device 3 from being exposed to the external environment for a long time, causing dust to fall in.

[0034] Please see Figures 8-10The extrusion block 73 is closely attached to the side wall of the dustproof plate 5 and has a sliding groove 731. A moving groove 51 is provided in the middle of the upper and lower surfaces of the dustproof plate 5. A moving block 52 is slidably installed in the moving groove 51. The other end of the moving block 52 extends out of the moving groove 51 and is slidably installed in the sliding groove 731. Fixing posts 53 are fixedly installed on both sides of the moving block 52 in the moving groove 51. A through hole 54 is provided on the dustproof plate 5 directly above the fixing post 53. A fixing hole 43 is provided on the side of the support frame 4 near the connecting rod 41. The magnetic clamp 6 is pushed towards the light receiving device 3 for detection. As the hole moves, gear 624 and threaded post 623 drive slider 622 to rotate and move away from rubber air ring 625. Gear 624 pushes extrusion block 73 to extrude air bag 72. Extrusion block 73 drives moving block 52 to move synchronously. When extrusion block 73 extrudes air bag 72 to a certain position (i.e., when magnetic clamp 6 reaches the detection hole position of light receiving device 3), moving block 52 drives fixing post 53 to engage in through hole 54 and fixing hole 43, thereby fixing post 53 to fix dustproof plate 5, preventing dustproof plate 5 from resetting during detection and causing heat insulation film on magnetic clamp 6 to shift.

[0035] 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. The moving block 52 can slide in the depth direction of the moving groove 51. When the moving block 52 moves with the pressing block 73 pressing 72, it ensures that the moving block 52 in the moving groove 51 will not form an obstruction. When the moving block 52 moves to a certain position, the fixing post 53 on the moving block 52 is just inserted into the through hole 54 and the fixing hole 43 to limit the dustproof plate 5.

[0036] The working principle of Embodiment 3 of the present invention is as follows: Please see Figures 1-10 During the process of pushing the magnetic clamp 6, which holds the heat insulation film, toward the detection hole of the light receiving device 3, the magnetic clamp 6 squeezes the dustproof plate 5, so that the dustproof plate 5 no longer blocks the detection holes on the light receiving device 3 and the light emitting device 2. When the detection is completed and the magnetic clamp 6 is removed, under the left and right elastic force of the return spring 42, the return spring 42 pushes the dustproof plate 5 to return to its original position, covering the detection holes of the light emitting device 2 and the light receiving device 3. This saves the steps of removing and placing the dustproof plate 5, and prevents the detection positions of the light emitting device 2 and the light receiving device 3 from being exposed to the external environment for a long time, causing dust to fall in. As the magnetic clamp 6 moves toward the detection hole of the light receiving device 3, the gear 624 and the threaded post 623 drive the slider 622 to rotate and move away from the rubber air ring 625. The gear 624 pushes the squeezing block 73 to squeeze the air bag 72. The squeezing block 73 drives the moving block 52 to move synchronously. When the squeezing block 73 squeezes the air bag 72 to a certain position (that is, when the magnetic clamp 6 reaches the detection hole of the light receiving device 3), the moving block 52 drives the fixing post 53 to engage in the through hole 54 and the fixing hole 43, thereby fixing the dustproof plate 5 with the fixing post 53 to prevent the dustproof plate 5 from resetting during the test, which would cause the heat insulation film on the magnetic clamp 6 to shift.

Claims

1. A haze meter for testing the production of heat 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 mounted with a support frame (4) and two racks (31). A magnetic clamp (6) is slidably provided in the middle of the support frame (4). The magnetic clamp (6) includes an inner ring (61) and an outer ring (62). The inner ring (61) is engaged in the outer ring (62). The outer ring (62) is provided with: Negative pressure grooves (621) are formed in the side walls at the upper and lower ends of the outer ring (62); The slider (622) is slidably sealed and installed in the negative pressure groove (621); A threaded post (623) is fixedly connected at one end to a slider (622), and at the other end it passes through the side wall of the outer ring (62) and extends out of the negative pressure groove (621). The threaded post (623) is threadedly connected to the through point of the outer ring (62). Gear (624) is fixedly connected to one end of threaded column (623) extending out of negative pressure groove (621), and gear (624) meshes with rack (31); A rubber air ring (625) is located between the inner ring (61) and the outer ring (62) and is connected to the bottom end of the negative pressure groove (621). The rubber air ring (625) has several negative pressure holes (626) on its side wall facing the inner ring (61). Two cleaning mechanisms (7) are fixedly installed on the light receiving device (3) to clean the heat insulation film inside the magnetic clamp (6).

2. The haze meter for testing the production of heat insulation film according to claim 1, characterized in that: The outer ring (62) has a balance valve (627) embedded in its side wall, and the balance valve (627) is connected to the rubber air ring (625).

3. A haze meter for testing the production of heat insulation film according to claim 1, characterized in that: A straightening ring (628) is fixedly installed on the inner wall of the outer ring (62), and the straightening ring (628) is in close contact with the outer wall of the rubber air ring (625).

4. A haze meter for testing the production of heat insulation film according to claim 1, characterized in that: The cleaning mechanism (7) includes: The housing (71) is fixedly installed on the side wall of the light receiving device (3), with the openings of the two housings (71) facing each other; An airbag (72) is fixedly installed at the bottom end of the housing (71); The extrusion block (73) is slidably installed inside the housing (71), with one side fixedly connected to the airbag (72) and the other side extending out of the housing (71) and closely attached to the end face of the gear (624); The jet pipe (74) is connected to the airbag (72) at one end and to the pressure relief valve at the other end. The pressure relief valve on the jet pipe (74) faces the detection hole of the light receiving device (3), and the pressure relief ports of the two pressure relief valves on the jet pipe (74) are opposite to each other. The air supply valve (75) is fixedly embedded on the outer wall of the housing (71) and communicates with the airbag (72).

5. A haze meter for testing the production of heat insulation film according to claim 4, characterized in that: The airbag (72) is equipped with a support spring, and the air supply valve (75) flows from the outside to the inside of the airbag (72).

6. A haze meter for testing the production of heat insulation film according to claim 4, characterized in that: The outer ring (62) has a cleaning groove on the side wall of the light receiving device (3) in close contact with it.

7. A haze meter for testing the production of heat insulation film according to claim 4, characterized in that: The light emitting device (2) is fixedly mounted with a support frame (4) on the end face facing the light receiving device (3) and on the two end faces of the light receiving device (3). Each support frame (4) has a dustproof plate (5) slidably mounted in the middle. A connecting rod (41) is fixedly connected to one side of the dustproof plate (5). Several connecting rods (41) are fixedly connected. A reset spring (42) is fixedly connected to the side wall of the dustproof plate (5). The other end of the reset spring (42) is fixedly connected to the support frame (4).

8. A haze meter for testing the production of heat insulation film according to claim 7, characterized in that: The extrusion block (73) is provided with a sliding groove (731) close to the side wall of the dustproof plate (5). A moving groove (51) is provided at the middle position of the upper and lower end surfaces of the dustproof plate (5). A moving block (52) is slidably provided 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 installed in the sliding groove (731). Fixed columns (53) are fixedly installed on both sides of the moving block (52) in the moving groove (51). A through hole (54) is provided on the dustproof plate (5) directly above the fixed column (53). A fixed hole (43) is provided on the side of the support frame (4) near the connecting rod (41).

9. A haze meter for testing the production of heat insulation film according to claim 8, 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).

Images