Detection equipment for light transmittance of endurance plate

Abstract

The invention relates to the technical field of light transmittance detection equipment, in particular to endurance plate light transmittance detection equipment which comprises an object placing table, a connecting arm is arranged on the object placing table, an emitter is arranged on the connecting arm, a receiver is arranged on the object placing table, and the endurance plate light transmittance detection equipment is characterized in that an adjusting device is arranged on the object placing table; a base used for adjusting the connecting arm is arranged in the adjusting device, a detection device is arranged on the object placing table and the connecting arm together, an optical fiber is arranged in the detection device, the base is moved when the optical fiber receives laser emitted by the emitter, and the detection device comprises an installation hole formed in the object placing table. And the receiver is fixedly mounted at the center of the bottom end of the mounting hole. According to the invention, the accuracy and reliability of the detection result of the light transmittance equipment are improved by automatically adjusting the coaxiality of the sensor of the light transmittance detection equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of light transmittance detection equipment, and in particular to a light transmittance detection equipment for endurance boards. Background Art

[0002] PC solid sheet is a high-performance plastic material made from polycarbonate resin. During manufacturing, manufacturers can tailor the light transmittance of PC solid sheet to the customer's specific application scenario, effectively blocking specific frequencies of light. This allows PC solid sheet to be flexibly applied to various scenarios. As a result, PC solid sheet can meet targeted light transmission requirements, making it an indispensable material in modern architecture and daily life.

[0003] During the production of transparent polycarbonate sheets, light transmittance testing equipment is required to test the transmittance of the sheets to ensure product quality and ensure that the products meet the requirements of specific scenarios. The principle is to measure the transmitted light flux through the sample and compare it with the incident light flux irradiating the sample. The ratio of the two, expressed as a percentage, is the product's light transmittance.

[0004] Currently, the transmittance detection equipment currently available on the market generally includes the product form shown in the technical document of patent number: CN105181655B, entitled: Light source module for transmittance detection device and transmittance detection device. It is equipped with a light source transmitting probe on one side and a sensor receiving probe on the other side, and adopts a through-beam measurement method. During measurement, the coaxiality of the sensors on both sides is required to be high, otherwise data deviation is likely to occur. However, during long-term use of the equipment, due to factors such as the equipment being subjected to transportation bumps and aging, the light source transmitting probe and the sensor receiving probe will inevitably experience axial deviation, which may lead to inaccurate detection results during the operation of the equipment.

[0005] Therefore, a light transmittance detection device for polycarbonate sheets is proposed. Summary of the Invention

[0006] The object of the present invention is to provide a light transmittance detection device for polycarbonate sheets, which improves the accuracy and reliability of the detection results of the light transmittance detection device by automatically adjusting the coaxiality of the sensor of the light transmittance detection device.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A light transmittance detection device for endurance boards includes a storage platform, a connecting arm is provided on the storage platform, a transmitter is provided on the connecting arm, a receiver is provided on the storage platform, an adjustment device is provided on the storage platform, a base for adjusting the connecting arm is provided in the adjustment device, a detection device is provided on both the storage platform and the connecting arm, an optical fiber is provided in the detection device, and the optical fiber moves the base when it receives the laser emitted by the transmitter.

[0009] Based on this configuration, when the present invention is in use, the transmitter and receiver are arranged on the same axis, and the transmitter emits a laser to the receiver to detect the transmittance of the PC endurance board. When the transmitter and receiver are horizontally misaligned due to factors such as transportation collisions and aging, causing the axes of the two to be not in the same straight line, the laser emitted by the transmitter will irradiate the optical fiber of the detection device, thereby triggering the detection device and activating the adjustment device. The adjustment device then moves the base to correct the coaxiality of the transmitter and receiver, so that the axes of the transmitter and receiver are re-aligned. As a result, the present invention can automatically adjust the coaxiality of the sensor of the transmittance detection device, thereby improving the accuracy and reliability of the detection results of the transmittance device.

[0010] Preferably, the detection device includes a mounting hole opened on the storage table, the receiver is fixedly mounted at the center of the bottom end of the mounting hole, and a plurality of photoresistors are symmetrically and evenly fixedly mounted at the bottom end of the mounting hole, and all the photoresistors are arranged in a circular array around the outside of the receiver; all the optical fibers are symmetrically and fixedly mounted on the side wall surface of the mounting hole, and each optical fiber is fixedly connected to each photoresistor in a one-to-one correspondence; all the photoresistors are connected to the external circuit, and all the photoresistors are connected in parallel with each other.

[0011] Through this arrangement, when the transmitter and receiver are horizontally misaligned due to factors such as transportation collisions and aging, causing their axes to be no longer in the same straight line, the landing point of the laser emitted by the transmitter will also be offset, causing part of the laser to irradiate the optical fiber. The optical fiber then guides this part of the laser to the corresponding photoresistor. After the photoresistor is illuminated, the resistance value changes, and the current in the branch corresponding to the photoresistor also changes. At this time, the external control circuit connected to the photoresistor detects the changing current, and thus, based on the position of the photoresistor, it specifically activates the adjustment device and adjusts the transmitter and receiver to a coaxial position. As a result, the present invention can automatically adjust the coaxiality of the sensor of the transmittance detection device, thereby improving the accuracy and reliability of the detection results of the transmittance device.

[0012] On this basis, a light-shielding tube can be set in the mounting hole. The light-shielding tube is set at the top of the receiver, and the axis of the light-shielding tube is in the same straight line as the axis of the receiver; the light-shielding tube is made of rubber, and the outer side of the light-shielding tube is against the optical fiber.

[0013] With this arrangement, when the laser emitted by the transmitter is reflected in the mounting hole, the light reflected toward the optical fiber will be blocked by the light shielding tube, thereby preventing the laser reflected in the mounting hole from being transmitted along the optical fiber to the photoresistor, thereby helping to prevent the photoresistor from being falsely triggered. This improves the reliability of the present invention.

[0014] At the same time, the light-shielding tube is made of rubber material and is flexible and elastic. Therefore, on the one hand, the light-shielding tube can use its own elastic force to press the optical fiber against the installation hole, which helps to fix the position of the optical fiber; on the other hand, the flexibility of the light-shielding tube is also conducive to avoiding the problem of damage to the optical fiber due to rigid squeezing.

[0015] Furthermore, if the transmitter flips and the direction of the laser light emitted is no longer parallel to the vertical direction, the obliquely emitted laser light, when it strikes the tip of the optical fiber, triggers the adjustment mechanism to move the base and ultimately adjust the laser's landing point back to the center of the receiver. However, since the laser light is no longer emitted vertically, its path length through the sample material on the stage will be longer than if it were emitted vertically. This results in greater attenuation of the laser light, which in turn can lead to errors in the test results, affecting the accuracy of the results.

[0016] Moreover, since the adjustment device will eventually adjust the landing point of the laser back to the center of the receiver, the error caused by the above problem is small and difficult to detect during the production process, resulting in the problem that the laser emitted by the transmitter is not parallel to the vertical direction cannot be solved in time, which in turn leads to inaccurate transmittance test results in the long term.

[0017] To this end, the top height of the optical fiber can be set to be lower than the top height of the light-shielding cylinder. With this configuration, if the transmitter flips and the direction of the laser light emitted is not parallel to the vertical direction, the obliquely emitted laser light will be blocked by the side of the light-shielding cylinder and will not be able to continue projecting onto the optical fiber within the mounting hole, thus preventing the adjustment device from being activated. At the same time, due to the deviation between the laser's landing point and the receiver's center point, the transmitted light flux received by the receiver decreases. Coupled with the increase in the laser's propagation path length in the sample, these factors can lead to significant deviations in the detection results, which can quickly attract the attention of staff and facilitate rapid maintenance and adjustment of the present invention.

[0018] Preferably, the adjustment device includes a mounting bracket 1 fixedly mounted on the side of the storage platform, two slide grooves 1 symmetrically provided in the mounting bracket 1, the carrying platform movably arranged in the two slide grooves 1, a driving motor 1 is fixedly mounted on the mounting bracket 1, a screw rod 1 is fixedly mounted on the output end of the driving motor 1, a slider 1 is provided on the screw rod 1, a thread 1 engaged with the screw rod 1 is provided in the slider 1; a mounting bracket 2 is fixedly mounted on the carrying platform, two slide grooves 2 are symmetrically provided in the mounting bracket 2, a base is movably installed in the two slide grooves 2, the connecting arm is fixedly mounted on the base, a driving motor 2 is fixedly mounted on the mounting bracket 2, a screw rod 2 is fixedly mounted on the output end of the driving motor 2, a slider 2 is provided on the screw rod 2, and a thread 2 engaged with the screw rod 2 is provided in the slider 2; the driving motor 1 and the driving motor 2 are both electrically connected to all the photoresistors.

[0019] With this setup, when none of the photoresistors are irradiated by the fiber-guided laser, the current flowing through each photoresistor is equal, causing the control system to shut down drive motors 1 and 2. When the transmitter and receiver are no longer coaxial, the end of an optical fiber corresponding to the transmitter's offset direction is irradiated by the laser. Guided by the optical fiber, the corresponding photoresistor is irradiated by the laser, causing the current in the branch where the photoresistor is located to change. Upon detecting this change, the external control circuit controls drive motors 1 and 2 to rotate forward or reverse, respectively, thereby moving the base on the same plane and returning the offset transmitter to a position coaxial with the receiver.

[0020] Specifically, when the optical fiber is irradiated by laser light, an external control circuit controls the rotation of drive motors 1 and 2 based on the position of the photoresistor, whose resistance value changes. This, combined with the coordination between lead screw 1 and slider 1, and lead screw 2 and slider 2, causes the base to move, thereby moving the transmitter toward the center of the receiver. When the transmitter returns to a coaxial position with the receiver, the impact point of the laser emitted by the transmitter no longer shifts. At this point, the optical fiber is no longer irradiated by the laser light, so drive motors 1 and 2 stop, maintaining the coaxiality between the transmitter and receiver.

[0021] Therefore, the present invention can automatically adjust the coaxiality of the sensor of the transmittance detection device, thereby improving the accuracy and reliability of the detection result of the transmittance detection device.

[0022] Preferably, a base is fixedly mounted on the connecting arm, a spherical groove is provided at the bottom end of the base, a connecting ball is movably mounted in the spherical groove, a counterweight is fixedly mounted at the lower end of the connecting ball, and the transmitter is fixedly mounted at the bottom end of the counterweight.

[0023] When the connecting arm bends, the laser beam emitted by the transmitter no longer remains vertical, causing the axis of the transmitter to be at an angle to the axis of the receiver. In this case, even if the transmitter's position is adjusted using the adjustment device, the axis of the transmitter and the axis of the receiver cannot be aligned, resulting in deviations in the transmittance test results.

[0024] With this arrangement, the connecting ball can rotate within the spherical groove within the range of motion without causing interference between components, and the counterweight portion of the connecting ball will always be in a position with minimum potential energy under the influence of gravity. In other words, even if the connecting arm bends, the counterweight portion will maintain a fixed posture. Therefore, by fixing the transmitter to the counterweight portion and setting the transmitter axis vertically at the position where the counterweight portion is at its lowest potential energy, within the allowable range of motion, even if the connecting arm bends and deforms, causing the transmitter axis to form an angle with the receiver axis, the present invention can utilize the gravitational potential energy of the counterweight portion to return the transmitter axis to a vertical direction.

[0025] Therefore, when installing the present invention, simply adjust the top surface of the platform to a horizontal plane and set the axis of the receiver to a vertical direction. The counterweight can then ensure that the axis of the transmitter and the axis of the receiver are always parallel. This helps avoid the problem of deviation in transmittance test results caused by the angle between the axis of the transmitter and the axis of the receiver, and further helps to ensure the coaxiality correction effect of the present invention on the transmitter and receiver.

[0026] Preferably, a containing box is provided in the base, and the containing box is filled with conductive liquid, which does not completely fill the containing box. Two conductive pillars are symmetrically fixedly installed on the containing box, and the two ends of the conductive pillars are in contact with the internal space and the external space of the containing box respectively; the two conductive pillars are respectively located at the center of the top surface and the center of the bottom surface of the containing box, and the two conductive pillars are connected to the external circuit; an alarm is provided on the base, and the alarm is electrically connected to the two conductive pillars.

[0027] In the present invention, the connecting ball must have a portion extending from the spherical slot to accommodate the counterweight and transmitter. Therefore, the angular range of rotation of the connecting ball within the spherical slot is limited by the counterweight. If the angle of bending deformation of the connecting arm is too large, the angle required for the connecting ball to return the counterweight to its lowest potential energy position will also be too large. At this point, the counterweight will collide with the opening of the spherical slot, preventing the connecting ball from continuing to rotate in its current direction. Consequently, the counterweight cannot return to its lowest gravitational potential energy position, preventing the transmitter's axis from returning to a vertical position. Ultimately, this will cause the transmitter's axis to form an angle with the receiver's axis, resulting in deviations in the transmittance test results.

[0028] With this arrangement, because the conductive liquid in the container does not fill the container, bubbles remain within the container. When the connecting arm is bent to a degree that does not cause the counterweight to collide with the spherical groove, the bubbles within the container are located between the two conductive posts, and the two conductive posts are disconnected. However, when the connecting arm is bent to a degree that causes the counterweight to collide with the spherical groove, the bubbles within the container leave the position between the two conductive posts due to the density relationship. At this point, the conductive liquid connects the two conductive posts, closing the circuit, and the alarm sounds, prompting staff to manually correct the bending deformation of the connecting arm. This prevents the coaxiality of the transmitter and receiver from being affected by excessive bending deformation of the connecting arm, helping to ensure the working effect of the present invention.

[0029] In addition, the two conductive posts are electrically connected to the photoresistors, and when the two conductive posts are connected by the conductive liquid, all photoresistors are disconnected from the external circuit. With this arrangement, when the angle between the laser emitted by the transmitter and the vertical line is too large and triggers the alarm, no current flows through any photoresistor, that is, the current on each photoresistor is equal and zero. At this time, both drive motor 1 and drive motor 2 remain stopped, and the landing position of the laser on the corresponding optical fiber is also maintained. Therefore, when maintenance personnel come to adjust the connecting arm after receiving the alarm, they can quickly determine the adjustment plan for the connecting arm and the base by checking the landing position of the laser, thereby improving the maintenance efficiency of the present invention and helping to ensure the use efficiency of the present invention.

[0030] For example, any cross section of the mounting hole is used as the observation plane for observation. When the alarm sounds, if the laser landing point falls on the optical fiber on the right, the maintenance personnel can check the laser landing point and then move the laser landing point to the left by turning the base clockwise. As the base rotates, the counterweight will eventually no longer abut against the spherical groove, so the counterweight can be stably maintained at the lowest position, and the direction of the laser emitted by the transmitter will return to the vertical direction. Moreover, if the base is slowly rotated again, it can be found that the laser landing point no longer changes, so the maintenance personnel can know that the axis of the transmitter has returned to the vertical state and can end the maintenance work. As a result, the staff can conveniently and quickly maintain the present invention by visual inspection, reduce the degree of dependence of maintenance work on tools, help improve maintenance efficiency, and thus help improve the reliability of the present invention during use.

[0031] Preferably, a mounting groove is provided on the base, the storage box is inserted into the mounting groove, two conductive plates are symmetrically fixedly installed in the mounting groove, the two conductive plates are respectively used to cooperate with two conductive columns, and the two conductive plates are electrically connected to the external circuit, and the storage box is made of transparent material; four threaded holes are symmetrically provided at the bottom of the storage table, and an adjusting nut is provided in each threaded hole.

[0032] With this arrangement, each adjusting nut can be rotated separately so that the top surface of the storage table can be adjusted to a horizontal plane. In the process of adjusting the top surface of the storage table, the storage box can be removed from the installation slot and placed on the top surface of the storage table. At this time, the storage box can be used as a spirit level to assist in adjusting the top surface of the storage table, allowing the staff to more conveniently adjust the top surface of the storage table to a horizontal level. After use, the storage box can be reinserted into the installation slot. At this time, the two conductive sheets are respectively connected to the two conductive posts, so that the storage box can still be electrically connected to the alarm, so that the alarm can be triggered normally during the use of the present invention. In addition, it is also beneficial to prevent the loss of the storage box, so that the storage box can be easily found the next time the top surface of the storage table needs to be adjusted.

[0033] Preferably, a damping portion is provided in the spherical groove, and the damping portion is in the spherical middle part of the spherical groove; a receiving groove is provided in the damping portion, and the receiving groove is arranged along the circumference of the horizontal cross section of the spherical groove, and the receiving groove is filled with grease.

[0034] With this arrangement, when the connecting ball rotates within the spherical groove, it comes into contact with the grease filled in the receiving groove. This grease forms a buffer layer between the connecting ball and the spherical groove, reducing friction between the two and helping to extend the service life of the component. Furthermore, the grease used should have a high viscosity at room temperature to provide a certain amount of damping force during the rotation of the connecting ball.

[0035] Therefore, when the detection device as a whole is subjected to external impact, the damping force provided by the grease helps to reduce the swing of the transmitter when it is subjected to a momentary impact, thereby helping to maintain the stability of the transmitter's posture and improve the reliability of the present invention.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. By providing a detection device and an adjustment device, when the transmitter and receiver become horizontally misaligned due to factors such as transportation collisions or aging, causing their axes to be out of alignment, the laser emitted by the transmitter will illuminate the optical fiber of the detection device, thereby triggering the detection device and activating the adjustment device. The adjustment device then corrects the coaxiality of the transmitter and receiver by moving the base, allowing the axes of the transmitter and receiver to re-align. As a result, the present invention can automatically adjust the coaxiality of the sensor of the transmittance detection device, improving the accuracy and reliability of the transmittance detection device's detection results.

[0038] 2. By providing a connecting ball and a counterweight, the transmitter maintains a defined position, keeping its axis vertical, even if the connecting arm bends. That is, within the rotational range permitted by the connecting ball, even if the connecting arm bends, causing the transmitter axis to form an angle with the receiver axis, the present invention can utilize the gravitational potential energy of the counterweight to restore the transmitter axis to a vertical orientation. This helps avoid the problem of transmittance measurement deviations caused by the angle between the transmitter and receiver axes, thereby ensuring the coaxiality adjustment effect of the present invention on the transmitter and receiver.

[0039] 3. By providing a conductive fluid and conductive posts, when the connecting arm bends to the extent that the counterweight contacts the spherical groove, the bubbles within the container, influenced by density, move away from the space between the two conductive posts. At this point, the conductive fluid connects the two posts, completing the circuit. This triggers an alarm, prompting personnel to manually correct the bending of the connecting arm. This prevents excessive bending of the connecting arm from affecting the coaxiality of the transmitter and receiver, helping to ensure the effectiveness of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A;

[0042] Figure 3 for Figure 1 A partially enlarged cross-sectional diagram of part B;

[0043] Figure 4 for Figure 3 Schematic cross-section diagram of

[0044] Figure 5 for Figure 1 A schematic diagram of a partially enlarged cross-section of section C;

[0045] Figure 6 for Figure 1 Schematic top view of

[0046] Figure 7 for Figure 1 Schematic diagram of the plane section of part A;

[0047] Figure 8 Schematic diagram of the internal structure of the base;

[0048] Figure 9 for Figure 8 A partial enlarged schematic diagram of part D in the middle.

[0049] In the figure: 1. Storage table; 2. Mounting frame 1; 3. Connecting arm; 4. Transmitter; 5. Base; 11. Mounting hole; 12. Adjusting nut; 13. Threaded hole; 21. Mounting frame 2; 22. Drive motor 1; 51. Mounting slot; 52. Alarm; 53. Spherical slot; 54. Connecting ball; 55. Damping part; 56. Receiving slot; 57. Grease; 58. Counterweight; 111. Optical fiber; 112. Shading tube; 113. Receiver; 114. Photoresistor; 211. Drive motor 2; 212. Screw rod 2; 213. Base; 214. Slider 2; 215. Slide groove 2; 221. Screw rod 1; 222. Slider 1; 223. Loading platform; 224. Slide groove 1; 511. Receiving box; 512. Conductive liquid; 513. Bubble; 514. Conductive sheet; 515. Conductive column. DETAILED DESCRIPTION

[0050] The following content will clearly describe the specific implementation methods of the present invention with the help of the drawings listed in the aforementioned "Diagram Description" section, in the hope that readers can have a more complete and objective understanding of the working principle of the present invention and the corresponding technical effects.

[0051] like Figures 1 to 9 The figure shows a specific embodiment of the present invention. Several points require prior explanation: First, mounting bracket 1 2 is integrally connected to the storage platform 1. To achieve optimal support, adjustment nuts 12 are provided at the bottom ends of mounting bracket 1 2 and storage platform 1, respectively. Second, the arrangement of threads 1 and 2 on sliders 1 222 and 214 is conventional, and for simplicity, threads 1 and 2 are not shown in the accompanying drawings. Third, alarm 52 can employ conventional sound or light alarms.

[0052] When the present invention is installed, first take out the storage table 1, set the connecting arm 3 on the storage table 1, set the transmitter 4 on the connecting arm 3, set the receiver 113 on the storage table 1, set an adjustment device on the storage table 1, set the base 213 for adjusting the connecting arm 3 in the adjustment device, and set a detection device on both the storage table 1 and the connecting arm 3. The detection device is provided with an optical fiber 111, and the optical fiber 111 moves the base 213 when receiving the laser emitted by the transmitter 4.

[0053] Among them, the detection device includes a mounting hole 11 opened on the storage table 1, a receiver 113 is fixedly installed at the center of the bottom end of the mounting hole 11, and a plurality of photoresistors 114 are symmetrically and evenly fixedly installed at the bottom end of the mounting hole 11, and all photoresistors 114 are arranged in a circular array around the outside of the receiver 113; all the optical fibers 111 are symmetrically fixed on the side wall surface of the mounting hole 11, and each optical fiber 111 is fixedly connected to each photoresistor 114 in a one-to-one correspondence; all photoresistors 114 are connected to the external circuit, and all photoresistors 114 are connected in parallel with each other.

[0054] The adjustment device includes a mounting frame 2 fixedly mounted on the side of the storage table 1, two slide grooves 224 are symmetrically provided in the mounting frame 2, and the carrying platform 223 is movably provided in the two slide grooves 224. A driving motor 22 is fixedly mounted on the mounting frame 2, a screw rod 221 is fixedly mounted on the output end of the driving motor 22, a slider 222 is provided on the screw rod 221, and a thread 1 is provided in the slider 222 to engage with the screw rod 221; a mounting frame 21 is fixedly mounted on the carrying platform 223, and the mounting frame 22 is fixedly mounted on the carrying platform 223. Two chute No. 215 are symmetrically provided in 21, and a base 213 is movably installed in the two chute No. 215. The connecting arm 3 is fixedly installed on the base 213. A driving motor No. 211 is fixedly installed on the mounting frame No. 21, and a screw No. 212 is fixedly installed on the output end of the driving motor No. 211. A slider No. 214 is provided on the screw No. 212, and a thread No. 2 that engages with the screw No. 212 is provided in the slider No. 214; the driving motor No. 1 22 and the driving motor No. 211 are electrically connected to all the photoresistors 114.

[0055] Furthermore, a base 5 is fixedly mounted on the connecting arm 3. A spherical slot 53 is defined at the bottom of the base 5. A connecting ball 54 is movably mounted within the slot. A counterweight 58 is fixedly mounted at the bottom of the connecting ball 54. The transmitter 4 is fixedly mounted at the bottom of the counterweight 58. A container 511 is disposed within the base 5. This container 511 is filled with a conductive liquid 512, which does not completely fill the container 511. Two conductive posts 515 are symmetrically fixedly mounted on the container 511. The ends of the conductive posts 515 contact the interior and exterior spaces of the container 511, respectively. The two conductive posts 515 are located at the top and bottom centers of the container 511, respectively. Both conductive posts 515 are connected to an external circuit. An alarm 52 is also mounted on the base 5 and is electrically connected to both conductive posts 515. The base 5 has a mounting slot 51, into which a container 511 is inserted. Two conductive plates 514 are symmetrically fixedly mounted within the mounting slot 51. These plates 514 are respectively designed to engage with two conductive posts 515 and electrically connect to an external circuit. The container 511 is made of a transparent material. Four threaded holes 13 are symmetrically formed at the bottom of the storage platform 1, each containing an adjustment nut 12. A damping portion 55 is disposed within the spherical slot 53, located in the middle of the spherical portion. A container slot 56 is also disposed within the damping portion 55, extending along the circumference of the horizontal cross-section of the slot 53. The container slot 56 is filled with grease 57. A light-shielding tube 112 is provided in the mounting hole 11. The light-shielding tube 112 is provided at the top of the receiver 113, and the axis of the light-shielding tube 112 is on the same straight line as the axis of the receiver 113. The light-shielding tube 112 is made of rubber, and the outer side surface of the light-shielding tube 112 is against the optical fiber 111. The top height of the optical fiber 111 is lower than the top height of the light-shielding tube 112.

[0056] When the present invention is in operation, the container 511 is first removed from the mounting slot 51 and placed on the top surface of the storage table 1. The adjusting nuts 12 are then rotated separately to move the bubble 513 in the container 511 to the exact center of the container 511. The top surface of the storage table 1 is then adjusted to be horizontal. The container 511 is then reinserted into the mounting slot 51. At this point, the transmitter 4 and receiver 113 are arranged on the same axis, with the transmitter 4 emitting a laser to the receiver 113 to detect the transmittance of the PC endurance board. The sample to be tested can then be placed on the top surface of the storage table 1 to test its transmittance.

[0057] When transmitter 4 and receiver 113 become horizontally misaligned due to factors such as transportation collisions or aging, causing their axes to be non-aligned, the laser emitted by transmitter 4 will irradiate the optical fiber 111 of the detection device, thereby triggering the detection device and activating the adjustment device. The adjustment device then corrects the coaxiality of transmitter 4 and receiver 113 by moving base 213, realigning the axes of transmitter 4 and receiver 113. Thus, the present invention can automatically adjust the coaxiality of the sensor of the transmittance detection device, improving the accuracy and reliability of the transmittance detection device's detection results.

[0058] Among them, the specific working process of the detection device is that when the transmitter 4 and the receiver 113 are horizontally misaligned due to factors such as transportation collision, aging, etc., resulting in the axes of the two being not in the same straight line, the landing point of the laser emitted by the transmitter 4 will also be offset, so that part of the laser will be irradiated on the optical fiber 111. Then, the optical fiber 111 guides this part of the laser to the corresponding photoresistor 114. After the photoresistor 114 is illuminated, the resistance value changes, and the current of the branch corresponding to the photoresistor 114 also changes. At this time, the external control circuit connected to the photoresistor 114 detects the changing current, and thus starts the adjustment device in a targeted manner according to the position of the photoresistor 114 and adjusts the transmitter 4 and the receiver 113 to a coaxial position. As a result, the present invention can automatically adjust the coaxiality of the sensor of the transmittance detection device, thereby improving the accuracy and reliability of the detection results of the transmittance device.

[0059] The specific working method of the adjustment device is as follows: when all photoresistors 114 are not illuminated by the laser guided by the optical fiber 111, both drive motor 1 22 and drive motor 2 211 are shut down. When the transmitter 4 and receiver 113 are no longer coaxial, the end of an optical fiber 111 corresponding to the offset direction of the transmitter 4 is illuminated by the laser. Under the guidance of the optical fiber 111, the corresponding photoresistor 114 is illuminated by the laser, and the external control circuit controls drive motor 1 22 and drive motor 2 211 to rotate forward or reverse, thereby moving the position of the base 213 on the same plane, and thus moving the offset transmitter 4 back to a position coaxial with the receiver 113.

[0060] Specifically, when optical fiber 111 is irradiated by laser light, the external control circuit controls the rotation of drive motor 1 22 and drive motor 2 211 based on the position of photoresistor 114, whose resistance value has changed. Furthermore, through the coordination between screw 1 221 and slider 1 222, and screw 2 212 and slider 2 214, base 213 moves with transmitter 4 toward the center of receiver 113. When transmitter 4 returns to a coaxial position with receiver 113, the impact point of the laser light emitted by transmitter 4 no longer shifts. At this point, no optical fiber 111 is irradiated by laser light, so drive motor 1 22 and drive motor 2 211 both stop, maintaining the coaxiality between transmitter 4 and receiver 113. Thus, the present invention can automatically adjust the coaxiality of the sensor of the transmittance detection device through the adjustment device, thereby improving the accuracy and reliability of the detection results of the transmittance detection device.

[0061] It's worth noting that, in the present invention, the connecting ball 54 must extend beyond the spherical slot 53 to accommodate the counterweight 58 and transmitter 4. Therefore, the angular range of rotation of the connecting ball 54 within the spherical slot 53 is limited by the counterweight 58. If the bending deformation of the connecting arm 3 is too large, the angle required for the connecting ball 54 to return the counterweight 58 to its lowest potential energy position will also be too large. At this point, the counterweight 58 will abut against the opening of the spherical slot 53, preventing the connecting ball 54 from continuing to rotate in its current direction. Consequently, the counterweight 58 cannot return to its lowest gravitational potential energy position, preventing the axis of the transmitter 4 from returning to a vertical position. Ultimately, this creates an angle between the axis of the transmitter 4 and the axis of the receiver 113, leading to deviations in the transmittance test results.

[0062] With this arrangement, because the conductive liquid 512 in the container 511 does not completely fill the container 511, bubbles 513 remain within the container 511. When the bending deformation of the connecting arm 3 does not cause the counterweight 58 to collide with the spherical groove 53, the bubbles 513 in the container 511 are located between the two conductive posts 515, and the two conductive posts 515 are disconnected. However, when the bending deformation of the connecting arm 3 causes the counterweight 58 to collide with the spherical groove 53, the bubbles 513 in the container 511 move away from the location between the two conductive posts 515 due to density differences. At this point, the conductive liquid 512 connects the two conductive posts 515, completing the circuit. The alarm 52 then sounds, prompting personnel to manually correct the bending deformation of the connecting arm 3. This prevents excessive bending deformation of the connecting arm 3 from affecting the coaxiality of the transmitter 4 and receiver 113, helping to ensure the effectiveness of the present invention.

[0063] It should be emphasized that, based on the contents described above, although the beneficial effects of the present invention have been elaborated in detail and corresponding specific embodiments have been provided, those skilled in the art can still achieve the same technical effects by making conventional substitutions, modifications, and other changes based on the given technical solutions without inventive effort, provided that they fully understand the working principles of the present invention. However, such changes should not be considered as exceeding the scope of the present invention. Specifically, the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A light transmittance detection device for a polycarbonate sheet, comprising a storage platform (1), a connecting arm (3) provided on the storage platform (1), a transmitter (4) provided on the connecting arm (3), and a receiver (113) provided on the storage platform (1), characterized in that: An adjustment device is provided on the storage platform (1), a base (213) for adjusting the connecting arm (3) is provided in the adjustment device, a detection device is provided on both the storage platform (1) and the connecting arm (3), an optical fiber (111) is provided in the detection device, and when the optical fiber (111) receives laser light emitted by the transmitter (4), the adjustment device is controlled to move the base (213).

2. The light transmittance detection device of polycarbonate sheet according to claim 1, characterized in that: The detection device comprises a mounting hole (11) provided on a storage platform (1); the receiver (113) is fixedly mounted at the center of the bottom end of the mounting hole (11); a plurality of photoresistors (114) are symmetrically and evenly fixedly mounted at the bottom end of the mounting hole (11); all the photoresistors (114) are arranged in a circular array around the outside of the receiver (113); all the optical fibers (111) are symmetrically and fixedly mounted on the side wall of the mounting hole (11), and each optical fiber (111) is fixedly connected to each photoresistor (114) in a one-to-one correspondence; all the photoresistors (114) are connected to an external circuit, and all the photoresistors (114) are connected in parallel.

3. The light transmittance detection device for polycarbonate sheets according to claim 2, characterized in that: The adjustment device includes a mounting frame (2) fixedly mounted on the side of the storage table (1), two slide grooves (224) are symmetrically provided in the mounting frame (2), and the supporting platform (223) is movably provided in the two slide grooves (224). A driving motor (22) is fixedly mounted on the mounting frame (2), a screw rod (221) is fixedly mounted on the output end of the driving motor (22), a slider (222) is provided on the screw rod (221), and a thread engaged with the screw rod (221) is provided in the slider (222); a mounting frame (21) is fixedly mounted on the supporting platform (223), and two slide grooves (215) are symmetrically provided in the mounting frame (21), and the two slide grooves (215) are symmetrically provided in the mounting frame (21). A base (213) is movably mounted in each of the two slide grooves (215), the connecting arm (3) is fixedly mounted on the base (213), a driving motor (211) is fixedly mounted on the second mounting frame (21), a screw rod (212) is fixedly mounted on the output end of the driving motor (211), a slider (214) is provided on the screw rod (212), and a thread (2) is provided in the slider (214) for engaging with the screw rod (212); the driving motor (22) and the driving motor (211) are both electrically connected to all the photoresistors (114), and the start and stop of the driving motor (22) and the driving motor (211) are controlled by the resistance change of the photoresistor (114).

4. The light transmittance detection device for polycarbonate sheets according to claim 3, characterized in that: A base (5) is fixedly mounted on the connecting arm (3), a spherical groove (53) is provided at the bottom end of the base (5), a connecting ball (54) is movably mounted in the spherical groove (53), a counterweight (58) is fixedly mounted at the lower end of the connecting ball (54), and the launcher (4) is fixedly mounted at the bottom end of the counterweight (58).

5. The light transmittance detection device for polycarbonate sheets according to claim 4, characterized in that: A receiving box (511) is provided in the base (5), and the receiving box (511) is filled with a conductive liquid (512), wherein the conductive liquid (512) does not completely fill the receiving box (511). Two conductive pillars (515) are symmetrically fixedly mounted on the receiving box (511), and the two ends of the conductive pillars (515) are in contact with the internal space and the external space of the receiving box (511) respectively; the two conductive pillars (515) are respectively located at the center of the top surface and the center of the bottom surface of the receiving box (511), and the two conductive pillars (515) are both connected to an external circuit; an alarm (52) is provided on the base (5), and the alarm (52) is electrically connected to the two conductive pillars (515); the two conductive pillars (515) are electrically connected to the photoresistor (114), and when the two conductive pillars (515) are connected by the conductive liquid (512), all the photoresistors (114) are disconnected from the external circuit.

6. The light transmittance detection device for polycarbonate sheets according to claim 5, characterized in that: The base (5) is provided with a mounting groove (51), the accommodating box (511) is inserted into the mounting groove (51), two conductive sheets (514) are symmetrically fixedly installed in the mounting groove (51), the two conductive sheets (514) are respectively used to abut against two conductive columns (515), and the two conductive sheets (514) are electrically connected to an external circuit, and the accommodating box (511) is made of a transparent material; four threaded holes (13) are symmetrically provided at the bottom end of the storage table (1), and an adjusting nut (12) is provided in each threaded hole (13).

7. The light transmittance detection device for polycarbonate sheets according to claim 4, characterized in that: A damping portion (55) is provided in the spherical groove (53), and the damping portion (55) is located in the middle of the sphere of the spherical groove (53); a receiving groove (56) is provided in the damping portion (55), and the receiving groove (56) is arranged along the circumference of the horizontal cross section of the spherical groove (53), and the receiving groove (56) is filled with grease (57).

8. The light transmittance detection device for polycarbonate sheets according to claim 2, characterized in that: A light-shielding tube (112) is provided in the mounting hole (11), the light-shielding tube (112) is provided at the top of the receiver (113), and the axis of the light-shielding tube (112) and the axis of the receiver (113) are on the same straight line; the light-shielding tube (112) is made of rubber material, and the outer side surface of the light-shielding tube (112) abuts against the optical fiber (111); the top height of the optical fiber (111) is lower than the top height of the light-shielding tube (112).

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