A light transmission performance detection device and method for silica gel product production

Abstract

The application relates to the technical field of material light transmittance detection, and discloses a light transmittance detection device and method for silica gel product production and a light transmittance detection device for silica gel product production, which comprises conveying equipment, a protective cover, light emitting equipment and light receiving equipment, and further comprises a cleaning part arranged on the protective cover, wherein the cleaning part comprises ion wind knife machines, cleaning assemblies and negative pressure fans, the ion wind knife machines, the cleaning assemblies and the negative pressure fans are uniformly distributed along the conveying direction of the material, the cleaning assemblies are distributed between two adjacent ion wind knife machines, the negative pressure fans are distributed in the protective cover in a staggered mode, the cleaning assemblies clean the surface of the material through reciprocating movement and rotation, and dust and static electricity adhered to the cleaning assemblies due to friction are removed; the application can realize efficient cleaning, automatic overturning and strict light shielding of the material, has high integration, reduces detection beats, has high precision of a detection position, has high detection efficiency of the material, has more stable detection data, and has higher detection precision.

Description

Technical Field

[0001] This invention relates to the field of material transmittance testing technology, specifically to a device and method for testing the transmittance of silicone products. Background Technology

[0002] Silicone products are widely used in optical devices, medical supplies, electronic packaging and lighting due to their excellent light transmittance, flexibility and chemical stability. In the production process of silicone products, light transmittance is one of the key indicators for evaluating product quality, which is directly related to the optical performance and reliability of subsequent applications.

[0003] Silicone materials have strong electrostatic adsorption properties, making them prone to attracting dust, fibers, and other tiny particles during production and transportation. These contaminants can scatter or absorb incident light, leading to deviations in transmittance test results and even causing qualified products to be mistakenly identified as defective. Therefore, it is necessary to remove static electricity and impurities such as dust from the material surface before testing.

[0004] Current material transmittance testing equipment clamps and fixes the material during transport. Then, the upper surface is cleaned by ion air blowing and rotating brush rollers. Due to the narrow internal space of the transport equipment, the lower surface is mostly cleaned only by ion air blowing to remove surface dirt. Furthermore, the rotating brush rollers can generate static electricity due to friction and attract dust, which can easily cause secondary contamination of the material surface and affect the testing accuracy. In addition, the existing light-shielding structure is relatively simple and it is difficult to form a completely sealed testing space on the transport equipment. Moreover, the fixing of the material and the light-shielding operations are usually performed in steps, which not only makes it difficult to guarantee the accuracy and repeatability of the testing position, resulting in insufficient stability of the testing data, but also increases the testing cycle time and affects the testing efficiency. Summary of the Invention

[0005] This invention provides a transmissivity testing device for silicone product manufacturing. It effectively removes static electricity and dust from the material surface using an ion air knife and cleaning components. A negative pressure fan collects dust thoroughly, and a flipping component flips the material, improving the cleaning effect on the bottom and thus enhancing the overall cleaning effect and ensuring testing accuracy. Furthermore, a light-shielding section places the material in a completely sealed space, ensuring precise fixation at the testing station, improving testing efficiency and data stability. This solves the problems of poor cleaning effect, poor sealing of the testing space, and poor testing position accuracy mentioned in the background art.

[0006] This invention provides the following technical solution: A device for testing the light transmittance of silicone products includes a conveying device, a protective cover, a light-emitting device, and a light-receiving device. It further includes: a cleaning section disposed on the protective cover, comprising an ion air knife machine, cleaning components, and a negative pressure fan, all evenly distributed along the material conveying direction; the cleaning components being distributed between adjacent ion air knives; and the negative pressure fans being staggered inside the protective cover. The cleaning components clean the material surface through reciprocating movement and rotation, while simultaneously removing dust and static electricity adhering to the cleaning components due to friction. A flipping component disposed between adjacent cleaning components is used to clamp and lift the material during testing and to flip the material. A light-shielding section includes an upper light-shielding component and a lower light-shielding component, which can be closed relative to each other to form a sealed testing space and to fix the material to be tested.

[0007] As a preferred embodiment of the present invention, the ion air knife is installed on the top of the protective cover, the outlet end of the ion air knife is inclined along the material conveying direction, the inlet end of the ion air knife extends to the outside of the protective cover, and a valve is provided on the inlet channel of each ion air knife.

[0008] As a preferred embodiment of the present invention, the cleaning assembly includes a rotating shaft, a reciprocating screw, and a brush roller. The rotating shaft is rotatably connected to the inner wall of the protective cover via the output end of a motor. The reciprocating screw is slidably connected to the rotating shaft via a spline. The brush roller is mounted on the reciprocating screw. A connecting frame is symmetrically mounted on the inner wall of the protective cover. Fixed guide blocks are symmetrically mounted on the connecting frame. The fixed guide blocks are sleeved on the reciprocating screw, and the fixed guide blocks are adapted to the reciprocating screw.

[0009] As a preferred embodiment of the present invention, it further includes a scraper, which is symmetrically mounted on the connecting frame. The scraper is located below the brush roller, and the side of the scraper closest to the brush roller is corrugated.

[0010] As a preferred embodiment of the present invention, the flipping assembly includes a telescopic rod, a positioning frame, and a clamping ring. The telescopic rod is symmetrically mounted on the protective cover. The positioning frame is mounted on the end of the telescopic rod. A sliding plate is slidably connected inside the positioning frame. A drive motor is mounted on the sliding plate. The clamping ring is mounted on the output end of the drive motor. A control switch is mounted on the top of the sliding plate. The control switch is electrically connected to the telescopic rod and the drive motor.

[0011] As a preferred embodiment of the present invention, it further includes a movable toothed plate, a limiting plate, and a lifting gear. The movable toothed plate and the limiting plate are symmetrically mounted on the sliding plate, and the movable toothed plate and the limiting plate are slidably connected to the positioning frame. The lifting gear is rotatably connected to the positioning frame and meshes with the movable toothed plate.

[0012] As a preferred embodiment of the present invention, a linkage structure is further included. The linkage structure includes a linkage wheel and a linkage belt. The linkage belt on the same side is sleeved on the linkage belt. Multiple linkage wheels are respectively connected to the cleaning component and the negative pressure fan. An extension shaft is installed on one of the linkage wheels. A drive gear is installed at the end of the extension shaft. A linkage rod is rotatably connected to the positioning frame. One end of the linkage rod is connected to the lifting gear, and the other end of the linkage rod is equipped with a linkage gear. When the clamping ring is tightly fitted to the outer wall of the material, the linkage gear meshes with the drive gear.

[0013] As a preferred embodiment of the present invention, the upper light-shielding assembly includes a lifting light-shielding ring and an upper pressing light-shielding ring. The lifting light-shielding ring is installed at the bottom of the light-emitting device. A spring is installed inside the lifting light-shielding ring. The upper pressing light-shielding ring is slidably connected to the lifting light-shielding ring through the spring. A compression cavity is formed between the upper pressing light-shielding ring and the lifting light-shielding ring. A fixing airbag is installed on the inner wall of the lifting light-shielding ring. A plurality of connecting holes are opened on the side wall of the lifting light-shielding ring. The connecting holes are used to link the fixing airbag and the compression cavity.

[0014] As a preferred embodiment of the present invention, the lower light-shielding assembly includes a fixed light-shielding ring and a lower support light-shielding ring, wherein the lower support light-shielding ring and the fixed light-shielding ring are slidably connected, wherein the light-emitting device and the light-receiving device are arranged concentrically in the vertical direction, the light source of the light-emitting device is located at the center of the lifting light-shielding ring, and the light-receiving device is located at the center of the fixed light-shielding ring.

[0015] A method for testing the light transmittance of silicone products includes the following steps: Step 1: Place the material to be tested on the equipment and intermittently convey the material to the other side of the equipment according to the transmittance testing frequency; Step 2: During the conveying process, ion air is blown along the material to remove static electricity attached to the material surface; Step 3: Stubborn dust on the material surface is cleaned by rotating and reciprocating, while dust and static electricity adhering to the cleaning structure are removed to ensure the cleaning effect of the material surface. Step 4: When the material is stationary, clamp and lift the material on the equipment, flip the material, and then place the material back in place; Step 5: The equipment then continues to convey the material and cleans the other surface of the material using the cleaning method described above; Step Six: During the cleaning process, the equipment continuously collects the dust being cleaned using negative pressure; Step 7: When the material is delivered to the testing station, it is shielded from light by closing the top and bottom of the material. At the same time, the material is circumferentially fixed to ensure the accuracy of the material testing position. Step 8: After the material inspection is completed, the material is transported to the next sorting process to classify and collect the material according to the inspection results.

[0016] Compared with the prior art, the present invention provides a device and method for testing the light transmittance of silicone products, which has the following advantages: 1. In this device for testing the light transmittance of silicone products, the cleaning component can dynamically clean the material surface, and the self-cleaning function of the cleaning structure is added to ensure that the contact area between the brush roller and the material is clean. This not only improves the cleaning effect of the material, but also extends the service life of the brush roller, avoids secondary contamination of the material, and thus improves the detection accuracy of the material.

[0017] 2. In this device for testing the light transmittance of silicone products, the flipping component can automatically flip the material after the upper surface is cleaned, taking advantage of the interval when the subsequent material is in the testing state. This improves the cleanliness of the bottom of the material and also prevents dust and other dirt from falling onto the fixed structure of the material and the conveying equipment, further improving the overall cleaning effect of the material.

[0018] 3. In this device for testing the light transmittance of silicone products, a completely sealed testing space can be formed on the conveying equipment through the light-shielding part, and the material can be fixed at the same time as the light is blocked. By integrating the fixing structure on the testing equipment, the accuracy and repeatability of the material testing position can be guaranteed, which not only reduces the testing cycle but also improves the stability of the testing data.

[0019] The parts of this device not described herein are the same as or can be implemented using existing technologies. This invention can achieve efficient material cleaning, automatic flipping, and strict light shielding. At the same time, it has high integration, reduced detection cycle time, and high detection position accuracy, resulting in high material detection efficiency, more stable detection data, and higher detection accuracy. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0021] Figure 1 This is a three-dimensional schematic diagram from a first perspective of the present invention; Figure 2 This is a three-dimensional schematic diagram from a second perspective of the present invention; Figure 3 This is a partial perspective view of the present invention; Figure 4 This is a three-dimensional schematic diagram of the cleaning component and the flipping component in this invention; Figure 5 This is a partial perspective view of the cleaning component in this invention; Figure 6 This is a three-dimensional schematic diagram of the flipping component in this invention; Figure 7 This is a three-dimensional schematic diagram of the light-shielding part in this invention; Figure 8 This is a partial cross-sectional structural diagram of the light-shielding part in this invention; Figure 9 For the present invention Figure 8 A schematic diagram of the structure of part A.

[0022] In the diagram: 1. Conveying equipment; 2. Light transmission hole; 3. Positioning ring; 4. Protective cover; 5. Ion air knife; 6. Cleaning components; 61. Rotary shaft; 62. Reciprocating lead screw; 63. Brush roller; 64. Connecting frame; 65. Fixed guide block; 66. Scraper; 7. Flipping assembly; 71. Telescopic rod; 72. Positioning frame; 73. Sliding plate; 74. Drive motor; 75. Clamping ring; 76. Control switch; 77. Moving toothed plate; 78. Limiting plate; 79. Linkage rod; 710. Lifting gear; 711. Linkage gear; 712. Extension shaft; 713. Drive gear; 8. Negative pressure fan; 9. Linkage structure; 10. Hydraulic cylinder; 11. Hydraulic rod; 12. Light-emitting device; 13. Upper shading assembly; 131. Lifting shading ring; 132. Spring; 133. Upper pressing shading ring; 134. Fixing airbag; 135. Connecting hole; 14. Mounting plate; 15. Lower light-shielding assembly; 151. Fixed light-shielding ring; 152. Lower support light-shielding ring; 16. Optical receiving equipment. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1:

[0025] Reference Figures 1-9 A device for testing the light transmittance of silicone products includes a conveying device 1, a protective cover 4, a light-emitting device 12, and a light-receiving device 16. The conveying device 1 includes a conveying roller, a conveyor belt, and a motor. Light-transmitting holes 2 are evenly distributed on the conveyor belt. A positioning ring 3 is installed on the side of the conveyor belt near the light-transmitting hole 2. The positioning ring 3 is concentrically arranged with the light-transmitting hole 2. The diameter of the light-transmitting hole 2 is 80%-90% of the material diameter. The inner diameter of the positioning ring 3 is larger than the material diameter.

[0026] Among them, the conveying device 1 is used to drive the silicone product to be tested to move along a predetermined path, providing a material conveying basis for continuous testing; the protective cover 4 provides physical protection for the internal components of the device, isolates external environmental interference, prevents external dust from entering the cleaning and testing areas, and provides an installation benchmark for the internal components; it should be explained that the protective cover 4 has holes of the required size for the material and positioning ring 3 along the conveying direction, which can minimize the impact of the external environment on the internal space; the light-emitting device 12 is used to emit a detection beam to the material to be tested, providing a stable and controllable light source for light transmittance testing; the light receiving device 16 is used to receive the transmitted light after penetrating the material and convert the light signal into an analyzable electrical signal, thereby realizing the quantitative evaluation of the light transmittance of the material, forming a continuous process layout from material input to test completion, reducing the transfer links of materials between different workstations, reducing the risk of secondary pollution, and improving testing efficiency and automation.

[0027] Reference Figure 3 The cleaning section is located on the protective cover 4. The cleaning section includes an ion air knife machine 5, a cleaning component 6 and a negative pressure fan 8, all of which are evenly distributed along the material conveying direction. The cleaning component 6 is distributed between two adjacent ion air knives 5, and the negative pressure fan 8 is staggered inside the protective cover 4. The cleaning component 6 cleans the material surface by reciprocating movement and rotation, and at the same time removes the dust and static electricity that adheres to the cleaning component 6 due to friction. The protective cover 4 creates a relatively enclosed clean environment, preventing dust and other impurities from the external environment from entering the testing space. The ion air knife 5 blows ionized air onto the material surface, eliminating static electricity through ion neutralization and simultaneously removing surface dust. The cleaning component 6 performs mechanical deep cleaning on the material surface after initial ion air treatment, removing stubborn stains through physical contact. Negative pressure fans 8 are staggered inside the protective cover 4, creating a negative pressure suction environment in the cleaning area to promptly remove the ion air knife. The floating dust blown up by machine 5 and the particles brushed off by cleaning component 6 are extracted from the material surface and discharged from protective cover 4. This allows the material to undergo a cycle of ion wind static removal, mechanical cleaning, and negative pressure dust removal during the conveying process, expanding the suction coverage area and avoiding cleaning dead corners. The reciprocating and rotating combined motion of cleaning component 6 increases the cleaning area and can remove dust and static electricity adhering to brush roller 63 by scraping, preventing secondary pollution from the cleaning tool itself from being transferred back to the material surface. This ensures that the surface cleanliness of the material meets the requirements of high-precision light transmission detection before entering the testing station.

[0028] Reference Figure 3 The ion air knife machine 5 is installed on the top of the protective cover 4. The outlet end of the ion air knife machine 5 is inclined along the material conveying direction. The inlet end of the ion air knife machine 5 extends to the outside of the protective cover 4, and a valve is installed on the inlet channel of each ion air knife machine 5.

[0029] The ion air knife machine 5 utilizes the top space to apply ion airflow downwards to the material surface, allowing the airflow to cover the material surface with the assistance of gravity. The ion airflow is also blown at a certain angle onto the material surface, generating a component force along the conveying direction while sweeping away dust, preventing the dust from spreading disorderly on the material surface. The inlet extends to the outside of the protective cover 4 and is usually connected to a clean air generating device (e.g., an air compressor compresses air, then cleans it through multiple filters, and finally connects it to the inlet via a pipe). After ionization, the air is sent into the protective cover 4 to ensure a sufficient air supply. The valves are usually solenoid valves, independently controlling the opening and closing and airflow of each ion air knife machine 5. This allows for zoned adjustment based on material cleaning needs or the degree of localized contamination. For example, the final ion airflow can be appropriately reduced to improve the targeting of static electricity removal and purging, enhance the equipment's adaptability to different working conditions, and avoid energy waste.

[0030] Reference Figures 4-5The cleaning component 6 includes a rotating shaft 61, a reciprocating screw 62, and a brush roller 63. The rotating shaft 61 is rotatably connected to the inner wall of the protective cover 4 through the output end of the motor. The reciprocating screw 62 is slidably connected to the rotating shaft 61 through a spline. The brush roller 63 is mounted on the reciprocating screw 62. A connecting frame 64 is symmetrically mounted on the inner wall of the protective cover 4. Fixed guide blocks 65 are symmetrically mounted on the connecting frame 64. The fixed guide blocks 65 are sleeved on the reciprocating screw 62 and are adapted to the reciprocating screw 62. The component also includes a scraper 66, which is symmetrically mounted on the connecting frame 64. The scraper 66 is located below the brush roller 63, and the side of the scraper 66 closest to the brush roller 63 is corrugated.

[0031] The rotating shaft 61 receives the motor torque and serves as the rotational drive source for the entire cleaning assembly 6. The reciprocating screw 62 rotates synchronously with the rotating shaft 61 while simultaneously sliding along the axial direction of the shaft using a spline connection, thus transforming a single rotational motion into a composite motion of rotation and reciprocating linear motion. Driven by this composite motion, the brush roller 63 performs all-around mechanical cleaning of the material surface through a combination of rotational brushing and axial reciprocating wiping. The fixed guide block 65 engages with the spiral groove or ball bearings of the reciprocating screw 62, forcibly converting the rotational motion of the reciprocating screw 62 into axial displacement, thereby driving the brush roller 63 to reciprocate along the material. The scraper 66 scrapes and cleans the surface of the brush roller 63 during its rotation, increasing the contact points with the brush roller 63 surface through its corrugated profile, thereby improving the efficiency of removing dust and static electricity buildup embedded in the bristle gaps. It should be explained that the length ratio of the brush roller 63 and the scraper 66 to the material diameter usually needs to be reasonably designed. Generally, the size of the brush roller 63 is about three times the diameter of the material, and the contact length between the scraper 66 and the brush roller 63 is similar to the diameter of the material. This ensures that the part of the brush roller 63 in contact with the material is basically the part that has already been cleaned by the scraper 66. In addition, the scraper 66 is made of conductive material and is connected to the ground after passing through the connecting frame 64, the protective cover 4 and the conveying device 1. This allows the static electricity generated by friction on the brush roller 63 to be removed. This increases the cleaning coverage area during a single pass and avoids cleaning blind spots. The corrugated scraper 66 removes contaminants and static electricity adhering to the brush roller 63 in real time, preventing the brush roller 63 from re-applying dust to the material surface and ensuring that the cleaning component 6 maintains stable cleaning ability during long-term continuous operation.

[0032] Reference Figure 4 and Figure 6The flipping assembly 7 is disposed between two adjacent cleaning assemblies 6 and is used to clamp and lift the material and flip it during material inspection. The flipping assembly 7 includes a telescopic rod 71, a positioning frame 72 and a clamping ring 75. The telescopic rod 71 is symmetrically installed on the protective cover 4. The positioning frame 72 is installed at the end of the telescopic rod 71. A sliding plate 73 is slidably connected inside the positioning frame 72. A drive motor 74 is installed on the sliding plate 73. The clamping ring 75 is installed at the output end of the drive motor 74. A control switch 76 is installed on the top of the sliding plate 73. The control switch 76 is electrically connected to the telescopic rod 71 and the drive motor 74.

[0033] The telescopic rod 71 is an electrically driven device, which can employ electric or pneumatic telescopic elements to move the positioning frame 72 and all components mounted on it toward the material side. The clamping ring 75 encircles the edge of the material through a ring structure, providing sufficient clamping force while minimizing obstruction of the effective detection area of ​​the material. The control switch 76 controls the extension and retraction of the telescopic rod 71 and the start and stop of the drive motor 74 according to the position of the sliding plate 73 or external commands, realizing automated timing control of the flipping process. That is, the material can only be flipped when it has risen to a certain height to avoid the material from colliding with the conveying equipment. If interference occurs between the 1-piece or the 3-piece positioning ring, and the material is in the detection state (i.e., the conveyor 1 is in the stopped state), the telescopic rod 71 extends to align the clamping ring 75 with the edge of the material to clamp it. Then, the sliding plate 73 drives the clamping ring 75 to move upward, causing the material to detach from the conveyor 1 and be suspended in the air. Finally, the drive motor 74 drives the clamping ring 75 to rotate 180 degrees to achieve flipping. This integrates double-sided cleaning and detection into the same conveying path, eliminating the need for additional flipping equipment or manual intervention. This ensures the consistency of the cleanliness and light transmittance of the material on both sides and improves the automation level of the production line.

[0034] Reference Figure 6 It also includes a movable toothed plate 77, a limiting plate 78, and a lifting gear 710. The movable toothed plate 77 and the limiting plate 78 are symmetrically installed on the sliding plate 73, and the movable toothed plate 77 and the limiting plate 78 are slidably connected to the positioning frame 72. The lifting gear 710 is rotatably connected to the positioning frame 72 and meshes with the movable toothed plate 77.

[0035] The movable gear plate 77 converts the rotational motion of the lifting gear 710 into the linear displacement of the sliding plate 73, thereby driving the material to move upward. The limiting plate 78 provides auxiliary guidance for the sliding plate 73 in addition to the movable gear plate 77, limiting the deflection of the sliding plate 73 during the movement and ensuring the stability of the clamping rings 75 on both sides. The gear and rack transmission has high positional accuracy. When the lifting gear 710 loses power, the material and the sliding plate 73 and other structures return to the initial position under the action of gravity, thereby placing the flipped material in the initial position.

[0036] Reference Figures 1-3 It also includes a linkage structure 9, which includes a linkage wheel and a linkage belt. The linkage belt on the same side is sleeved on the linkage belt. Multiple linkage wheels are respectively connected to the cleaning component 6 and the negative pressure fan 8. An extension shaft 712 is installed on one of the linkage wheels. A drive gear 713 is installed at the end of the extension shaft 712. A linkage rod 79 is rotatably connected to the positioning frame 72. One end of the linkage rod 79 is connected to the lifting gear 710. The other end of the linkage rod 79 is equipped with a linkage gear 711. When the clamping ring 75 is tightly fitted to the outer wall of the material, the linkage gear 711 meshes with the drive gear 713.

[0037] The linkage structure 9 is used to establish a power transmission path between the cleaning component 6 and the negative pressure fan 8, enabling both to be driven synchronously by the same power source, reducing the number of motors required. Multiple rotating shafts 61 of the cleaning components 6 or the drive shafts of the negative pressure fan 8 on the same side are linked to achieve synchronous operation of each workstation on the same side. For example, one rotating shaft 61 is driven by a motor, while the other side of the rotating shaft is driven by a linkage belt and a linkage wheel. Simultaneously, the linkage belt drives the negative pressure fan 8 and the extension shaft 712. It is important to note that the winding position of the linkage belts on both sides needs to be carefully considered to ensure that the rotation directions of the extension shafts 712 on both sides are consistent. If the rotation directions of the negative pressure fan 8 are inconsistent, the direction of the negative pressure fan 8 can be adjusted so that when the negative pressure fan 8 is working, the inside of the protective cover 4 is in a negative pressure state. When the telescopic rod 71 drives the positioning frame 72 to extend and clamp... When the holding ring 75 is tightly fitted to the outer wall of the material, the linkage gear 711 moves with the positioning frame 72 to the position where it meshes with the drive gear 713. At this time, the power generated by the operation of the cleaning component 6 is transmitted to the lifting gear 710 through the linkage belt, linkage wheel, extension shaft 712, drive gear 713, linkage gear 711, and linkage rod 79. This drives the moving toothed plate 77 to move the sliding plate 73 upward, thereby causing the material to detach from the conveying device 1 and lifting the material. The lifting action of the flipping component 7 does not require a separate motor. Instead, it is automatically triggered by mechanical linkage using the redundant power of the cleaning component 6 during operation, which simplifies the equipment structure and reduces the complexity of electrical control. At the same time, the triggering time of the clamping action is mechanically linked with the contact state between the clamping ring 75 and the material, ensuring the reliability of the clamping force and avoiding clamping failure caused by electrical sensor malfunction.

[0038] Reference Figure 3 , Figure 7 , Figure 8 and Figure 9The light-shielding section includes an upper light-shielding assembly 13 and a lower light-shielding assembly 15. The upper light-shielding assembly 13 and the lower light-shielding assembly 15 can be closed relative to each other to form a sealed detection space and fix the material to be detected. The upper light-shielding assembly 13 includes a lifting light-shielding ring 131 and an upper pressing light-shielding ring 133. The lifting light-shielding ring 131 is installed at the bottom of the light-emitting device 12. A spring 132 is installed inside the lifting light-shielding ring 131. The upper pressing light-shielding ring 133 is slidably connected to the lifting light-shielding ring 131 through the spring 132. A compression cavity is formed between the upper pressing light-shielding ring 133 and the lifting light-shielding ring 131. The inner wall of the lifting light-shielding ring 131... The fixed airbag 134 is installed, and multiple connecting holes 135 are opened on the side wall of the lifting light-shielding ring 131. The connecting holes 135 are used to link the fixed airbag 134 and the compression chamber. A hydraulic cylinder 10 is installed on the top of the protective cover 4, and a hydraulic rod 11 is installed on the inner side of the top of the protective cover 4. The light-emitting device 12 is installed at the output end of the hydraulic rod 11. The hydraulic cylinder 10 is equipped with a control element to control the delivery of hydraulic oil in the hydraulic rod 11. In addition, the hydraulic cylinder 10 is connected to the lower light-shielding component 15 through a pipe to realize the synchronous relative movement of the upper and lower light-shielding structures, forming a closed detection space on the conveying equipment 1.

[0039] The upper light-shielding component 13 and the lower light-shielding component 15 are closed together, surrounding the material detection area from both above and below to form a sealed detection space. This isolates the light from external stray light from interfering with the light receiving device 16, ensuring that the light transmittance performance detection is performed in a dark environment and improving the signal-to-noise ratio. The lifting light-shielding ring 131 forms the main frame of the upper light-shielding component 13. The spring 132 provides elastic restoring force, causing the upper light-shielding ring 133 to contract during the closing process. This not only reduces collisions between structures but also compresses the compression chamber within the lifting light-shielding ring 131. The gas inside the chamber is then forced into the fixing airbag 134 through the connecting hole 135. After inflation, the fixing airbag 134 applies uniform clamping force from the circumference of the material. The holding force is used to hold and fix the material circumferentially. The air pressure change generated by the closing action of the light-shielding part drives the fixing airbag 134 to automatically clamp the material, eliminating the need for an additional airbag inflation pump and complex air circuit, simplifying the equipment structure. At the same time, the buffering effect of the spring 132 avoids the rigid impact of the light-shielding part on the silicone material. The circumferential wrapping fixation of the fixing airbag 134 does not cause hard point compression on the material surface, making it suitable for soft and easily deformable silicone products. It ensures both the airtightness of the detection space and the precise fixation of the detection material, ensuring the accuracy of the detection position. It should be explained that when the clamping force of the fixing airbag 134 on the material is insufficient to move the upper light-shielding component 13 upward, it drives the material to move upward synchronously.

[0040] Reference Figures 7-8The lower light-shielding assembly 15 includes a fixed light-shielding ring 151 and a lower support light-shielding ring 152. The lower support light-shielding ring 152 is slidably connected to the fixed light-shielding ring 151. The light-emitting device 12 and the light-receiving device 16 are arranged concentrically in the vertical direction. The light source of the light-emitting device 12 is located at the center of the lifting light-shielding ring 131, and the light-receiving device 16 is located at the center of the fixed light-shielding ring 151. Both the light-receiving device 16 and the fixed light-shielding ring 151 are mounted on the mounting plate 14. The mounting plate 14 is connected to the conveying device 1 by plugging, which facilitates disassembly and assembly in a narrow space. The end of the mounting plate 14 is provided with a detachable baffle, which can isolate the outside air on the one hand and position the light-receiving device 16 on the other hand.

[0041] The optical receiving device 16 is a conventional method in the prior art, and therefore will not be described in detail. The cavity between the fixed light-shielding ring 151 and the lower support light-shielding ring 152 is connected to the hydraulic cylinder 10, so that the upper light-shielding component 13 and the lower light-shielding component 15 move synchronously relative to each other, quickly forming a sealed detection space. The upper light-shielding ring 133 is pressed against the positioning ring 3, while the lower support light-shielding ring 152 is pressed against the conveyor belt of the conveying device 1 to form a stable sealed space. While closing the light-shielding, the optical alignment of the material is automatically completed, eliminating the measurement deviation caused by the change of incident angle. The centrally symmetrical arrangement ensures uniform illumination and complete reception in the detection area, improving the repeatability and accuracy of light transmittance detection.

[0042] Example 2:

[0043] Similar to Example 1, a method for testing the light transmittance of silicone products is proposed based on Example 1, comprising the following steps: Step 1: Place the material to be tested on the equipment and intermittently convey the material to the other side of the equipment according to the transmittance testing frequency; Each pause corresponds to a detection station, providing the necessary static time window for cleaning, flipping, and detection actions. It passes through each functional area intermittently, avoiding image blurring or data drift caused by detection during dynamic transport, and ensuring stable detection conditions at each detection point.

[0044] Step 2: During the conveying process, ion air is blown along the material to remove static electricity attached to the material surface; The ionized airflow generated by the ion air knife machine 5 covers the upper surface of the material. Through the principle of ion neutralization, the static charge generated by friction during the processing and transportation of the material is eliminated. After the static electricity is removed, the dust on the material surface is easily removed by subsequent processes because it loses its electrostatic adsorption force. At the same time, it avoids electromagnetic interference of static electricity to the light receiving device 16 and surrounding electronic components, creating a stable electrostatic environment for high-precision optical inspection.

[0045] Step 3: Stubborn dust on the material surface is cleaned by rotating and reciprocating, while dust and static electricity adhering to the cleaning structure are removed to ensure the cleaning effect of the material surface. The combined motion of the cleaning component 6 removes adhering contaminants that cannot be blown off by the ion wind through mechanical brushing and wiping. The real-time scraping of the brush roller 63 by the scraper 66 removes the dust and static electricity accumulated on the brush roller, restoring the cleaning ability of the brush roller. The self-cleaning design of the cleaning tool avoids the problem of secondary contamination of materials by the brush roller in traditional cleaning methods, ensuring that the material surface reaches the required cleanliness standard before reaching the testing station, and preventing surface dust from blocking light and causing the light transmittance test value to be low.

[0046] Step 4: When the material is stationary, clamp and lift the material on the equipment, flip the material, and then place the material back in place; The flipping is performed when the material is stationary to avoid positioning errors or material damage caused by flipping during movement. The flipping component 7 completes the cycle of clamping, lifting, flipping, lowering and releasing. The flipping process does not affect the normal intermittent rhythm of the conveying equipment 1. The material has high positional accuracy after flipping, ensuring that the other side of the material can accurately enter the subsequent cleaning process.

[0047] Step 5: The equipment then continues to convey the material and cleans the other surface of the material using the cleaning method described above; The other surface of the material is treated again by the ion air knife machine 5 and the cleaning component 6 to obtain the same level of cleanliness as the first surface. This ensures that both sides of the material meet the same cleanliness standard, avoids inconsistencies in the test benchmarks for light transmittance due to single-sided cleaning, and improves the fairness and comparability of the test results.

[0048] Step Six: During the cleaning process, the equipment continuously collects the dust being cleaned using negative pressure; During the cleaning process, the negative pressure environment in the cleaning area is continuously maintained by the negative pressure fan 8, which promptly removes the floating dust blown up by the ion air knife machine 5 and the particles brushed off by the cleaning components 6. This prevents the dust that has detached from the material surface from suspending inside the protective cover 4 and falling back onto the material surface, thus maintaining the cleanliness of the environment inside the protective cover 4, reducing the risk of dust contamination of the optical windows of the light-emitting device 12 and the light-receiving device 16, and extending the maintenance cycle of the optical components.

[0049] Step 7: When the material is delivered to the testing station, it is shielded from light by closing the top and bottom of the material. At the same time, the material is circumferentially fixed to ensure the accuracy of the material testing position. When the material is delivered to the testing station, the upper light-shielding component 13 and the lower light-shielding component 15 move towards each other, surrounding the material from the top and bottom to form a sealed dark chamber. The gas discharged from the compression chamber when the upper light-shielding ring 133 is compressed and retracted causes the fixing airbag 134 to expand, applying a uniform covering force from the outer periphery of the material. The light-shielding and fixing actions are completed in conjunction with the same set of mechanisms, simplifying the operation steps of the testing station. The circumferential fixing ensures that the material testing point is always located in the center of the optical path, preventing the light spot from shifting due to slight material movement during the testing process, and ensuring the repeatability of the position of the transmittance measurement.

[0050] Step 8: After the material inspection is completed, the material is transported to the next sorting process to classify and collect the material according to the inspection results.

[0051] After the material testing is completed, the tested material is moved out of the testing station and sent to the subsequent classification area by the conveying equipment 1; based on the light transmittance data output by the light receiving equipment 16, the sorting system separates qualified and unqualified products into different collection containers, reducing the labor intensity and subjective error of manual sorting, and improving the production efficiency and quality control level of silicone product light transmittance testing.

[0052] Components not described in detail in this article are existing technologies.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for testing the light transmittance of silicone products, comprising a conveying device (1), a protective cover (4), a light-emitting device (12), and a light-receiving device (16), characterized in that, Also includes: The cleaning section is located on the protective cover (4). The cleaning section includes an ion air knife machine (5), a cleaning component (6), and a negative pressure fan (8), all of which are evenly distributed along the material conveying direction. The cleaning component (6) is distributed between two adjacent ion air knives (5), and the negative pressure fan (8) is staggered inside the protective cover (4). The cleaning component (6) cleans the material surface by reciprocating movement and rotation, while removing dust and static electricity that adheres to the cleaning component (6) due to friction. A flipping component (7) is disposed between two adjacent cleaning components (6) for clamping and lifting the material and flipping the material during material inspection; The light-shielding part includes an upper light-shielding component (13) and a lower light-shielding component (15), which can be closed relative to each other to form a sealed detection space and fix the material to be detected.

2. The light transmittance testing device for silicone product manufacturing according to claim 1, characterized in that, The ion air knife machine (5) is installed on the top of the protective cover (4). The outlet end of the ion air knife machine (5) is inclined along the material conveying direction. The inlet end of the ion air knife machine (5) extends to the outside of the protective cover (4). A valve is provided on the inlet channel of each ion air knife machine (5).

3. The light transmittance testing device for silicone product manufacturing according to claim 1, characterized in that, The cleaning component (6) includes a rotating shaft (61), a reciprocating screw (62), and a brush roller (63). The rotating shaft (61) is rotatably connected to the inner wall of the protective cover (4) through the output end of the motor. The reciprocating screw (62) is slidably connected to the rotating shaft (61) through a spline. The brush roller (63) is mounted on the reciprocating screw (62). A connecting frame (64) is symmetrically mounted on the inner wall of the protective cover (4). A fixed guide block (65) is symmetrically mounted on the connecting frame (64). The fixed guide block (65) is sleeved on the reciprocating screw (62), and the fixed guide block (65) is adapted to the reciprocating screw (62).

4. The light transmittance testing device for silicone product manufacturing according to claim 3, characterized in that, It also includes a scraper (66), which is symmetrically mounted on the connecting frame (64). The scraper (66) is located below the brush roller (63), and the side of the scraper (66) near the brush roller (63) is corrugated.

5. The light transmittance testing device for silicone product manufacturing according to claim 1, characterized in that, The flipping assembly (7) includes a telescopic rod (71), a positioning frame (72), and a clamping ring (75). The telescopic rod (71) is symmetrically mounted on the protective cover (4). The positioning frame (72) is mounted on the end of the telescopic rod (71). A sliding plate (73) is slidably connected inside the positioning frame (72). A drive motor (74) is mounted on the sliding plate (73). The clamping ring (75) is mounted on the output end of the drive motor (74). A control switch (76) is mounted on the top of the sliding plate (73). The control switch (76) is electrically connected to the telescopic rod (71) and the drive motor (74).

6. The device for testing the light transmittance of silicone products according to claim 5, characterized in that, It also includes a movable toothed plate (77), a limiting plate (78), and a lifting gear (710). The movable toothed plate (77) and the limiting plate (78) are symmetrically installed on the sliding plate (73), and the movable toothed plate (77) and the limiting plate (78) are slidably connected to the positioning frame (72). The lifting gear (710) is rotatably connected to the positioning frame (72), and the lifting gear (710) meshes with the movable toothed plate (77).

7. The light transmittance testing device for silicone product manufacturing according to claim 6, characterized in that, It also includes a linkage structure (9), which includes a linkage wheel and a linkage belt. The linkage belt on the same side is sleeved on the linkage belt. Multiple linkage wheels are respectively connected to the cleaning component (6) and the negative pressure fan (8). An extension shaft (712) is installed on one of the linkage wheels. A drive gear (713) is installed at the end of the extension shaft (712). A linkage rod (79) is rotatably connected to the positioning frame (72). One end of the linkage rod (79) is connected to the lifting gear (710), and the other end of the linkage rod (79) is equipped with a linkage gear (711). When the clamping ring (75) is in close contact with the outer wall of the material, the linkage gear (711) meshes with the drive gear (713).

8. The light transmittance testing device for silicone product manufacturing according to claim 1, characterized in that, The upper light-shielding assembly (13) includes a lifting light-shielding ring (131) and an upper pressing light-shielding ring (133). The lifting light-shielding ring (131) is installed at the bottom of the light-emitting device (12). A spring (132) is installed inside the lifting light-shielding ring (131). The upper pressing light-shielding ring (133) is slidably connected to the lifting light-shielding ring (131) through the spring (132). A compression cavity is formed between the upper pressing light-shielding ring (133) and the lifting light-shielding ring (131). The inner wall of the lifting light-shielding ring (131) is equipped with a fixed airbag (134), and the side wall of the lifting light-shielding ring (131) is provided with multiple connecting holes (135). The connecting holes (135) are used to link the fixed airbag (134) and the compression chamber.

9. The light transmittance testing device for silicone product manufacturing according to claim 8, characterized in that, The lower light-shielding assembly (15) includes a fixed light-shielding ring (151) and a lower support light-shielding ring (152), wherein the lower support light-shielding ring (152) is slidably connected to the fixed light-shielding ring (151). The light-emitting device (12) and the light-receiving device (16) are arranged concentrically in the vertical direction. The light source of the light-emitting device (12) is located at the center of the lifting light-shielding ring (131), and the light-receiving device (16) is located at the center of the fixed light-shielding ring (151).

10. A method for testing the light transmittance of silicone products, comprising the light transmittance testing device for silicone product manufacturing as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Place the material to be tested on the equipment and intermittently convey the material to the other side of the equipment according to the transmittance testing frequency; Step 2: During the conveying process, ion air is blown along the material to remove static electricity attached to the material surface; Step 3: Stubborn dust on the material surface is cleaned by rotating and reciprocating, while dust and static electricity adhering to the cleaning structure are removed to ensure the cleaning effect of the material surface. Step 4: When the material is stationary, clamp and lift the material on the equipment, flip the material, and then place the material back in place; Step 5: The equipment then continues to convey the material and cleans the other surface of the material using the cleaning method described above; Step Six: During the cleaning process, the equipment continuously collects the dust being cleaned using negative pressure; Step 7: When the material is delivered to the testing station, it is shielded from light by closing the top and bottom of the material. At the same time, the material is circumferentially fixed to ensure the accuracy of the material testing position. Step 8: After the material inspection is completed, the material is transported to the next sorting process to classify and collect the material according to the inspection results.

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