Device for detecting high temperature resistance of light guide plate
By designing a device for testing the high-temperature resistance of light guide plates, and using a combination of heating components and infrared ranging sensors, the problem of difficulty in detecting deformation of light guide plates in high-temperature environments has been solved, and automated high-temperature performance monitoring and warning have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, the deformation of light guide plates in high-temperature environments is difficult to observe with the naked eye and is also difficult to detect.
Design a device for testing the high-temperature resistance of a light guide plate. The device uses a heating component, an infrared ranging sensor, and a PLC control panel. The infrared ranging sensor automatically measures the change in the vertical distance between the light guide plate and the light guide plate. Combined with a temperature sensor and an alarm, it realizes automatic monitoring and alarm.
It enables automated testing of the high-temperature performance of light guide plates, and can promptly alert staff to any deformation of the light guide plates, thus improving the accuracy and efficiency of testing.
Smart Images
Figure CN224095743U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of light guide plate performance detection, especially to a light guide plate high temperature resistance performance detection device. BACKGROUND
[0002] The light guide plate is a kind of plate material using optical grade acrylic or PC as base material, and light guide points are printed on the bottom surface of the plate material by laser engraving, V-shaped cross grid engraving, UV screen printing and other technologies.These light guide points can use optical principles to reflect and scatter light from the light source inside the light guide plate, and finally uniformly emit from the front of the light guide plate to form a surface light source.
[0003] At present, part of the light guide plate is easy to deform due to heat in high temperature environment, and the deformation amount is not easy to observe with naked eye and difficult to detect, therefore, the utility model provides a light guide plate high temperature resistance performance detection device different from prior art to solve the above technical problems. UTILITY MODEL CONTENTS
[0004] In order to improve the problem that part of the light guide plate mentioned above deforms in high temperature environment and is difficult to detect, the utility model provides a light guide plate high temperature resistance performance detection device.
[0005] The utility model provides a light guide plate high temperature resistance performance detection device, adopts the following technical scheme:
[0006] A light guide plate high temperature resistance performance detection device, comprising a detection box body, a heating assembly is installed at the upper end position in the cavity of the detection box body, a plurality of mesh plates are uniformly installed at the lower end position in the cavity of the detection box body, a temperature sensor is inlaid at the lower end position of the outer wall of one side of the detection box body, a PLC control panel and an alarm are respectively installed at the upper end position of the outer wall of one side of the detection box body, a second straight plate and a sliding assembly are respectively installed at the upper end position of the detection box body, an infrared distance measuring sensor is installed on the sliding assembly, and the PLC control panel is electrically connected between the infrared distance measuring sensor, the temperature sensor and the alarm.
[0007] By adopting the above technical scheme, the light guide plate is placed on the mesh plate at the appropriate position, the heating assembly is started to heat the light guide plate, the light guide plate is taken out and placed on the second straight plate after being heated to a certain temperature and time, the sliding assembly is started to drive the infrared distance measuring sensor to move forward and backward and left and right, the infrared distance measuring sensor is started to automatically measure the vertical distance between the light guide plate, when the light guide plate deforms, the vertical distance between the infrared distance measuring sensor and the light guide plate will change abnormally, and the signal can be automatically transmitted to the PLC control panel, the PLC control panel can automatically control the alarm to start to alarm the staff, and the high temperature resistance performance of the light guide plate is monitored conveniently.
[0008] Optionally, the heating assembly comprises an electric heating pipe fixed at the upper surface of the inner cavity of the detection box, a mesh cover is arranged outside the electric heating pipe and fixed at the upper surface of the inner cavity of the detection box, and the electric heating pipe is electrically connected with the PLC control panel.
[0009] By adopting the above technical scheme, the electric heating pipe is powered to generate heat, so that the temperature of the inner cavity of the detection box can be increased to further high-temperature process the light guide plate.
[0010] Optionally, the sliding assembly comprises two groups of second electric sliding rails, the two groups of second electric sliding rails are respectively installed at the two ends of the upper surface of the detection box, second electric sliding blocks are installed on the two groups of second electric sliding rails, first straight plates are installed on the outer walls of the two groups of second electric sliding blocks, first electric sliding rails are installed at the upper end positions of the outer walls of the two groups of first straight plates, and first electric sliding blocks fixed with the infrared distance sensor are installed outside the first electric sliding rails.
[0011] By adopting the above technical scheme, the second electric sliding rails and the first electric sliding rails are started to drive the second electric sliding blocks and the first electric sliding blocks to move horizontally, so that the infrared distance sensor can be moved forward and backward and left and right to facilitate automatic measurement of the vertical distance between the infrared distance sensor and the light guide plate.
[0012] Optionally, a plurality of jack sockets are uniformly arranged around the upper surface of the second straight plate, and T-shaped plates are arranged around the upper surface of the second straight plate and are inserted and clamped with the jack sockets.
[0013] By adopting the above technical scheme, the T-shaped plates are inserted into the jack sockets at the corresponding positions, so that the positions of the light guide plates can be limited by the plurality of T-shaped plates to avoid position deviation during placement of the light guide plates.
[0014] Optionally, an air exchange box is installed on the outer wall of one side of the detection box, air exchange pipes are installed at the upper and lower ends of the inner cavity of the air exchange box and extend into the inner cavity of the detection box, and a plurality of high-temperature-resistant fans are uniformly installed at the middle position of the inner cavity of the air exchange box.
[0015] By adopting the above technical scheme, the plurality of high-temperature-resistant fans are started to generate air flow, which is combined with the plurality of air exchange pipes, so that the air exchange rate of the inner cavities of the detection box and the air exchange box can be increased to facilitate uniform distribution of hot air temperature in the inner cavity of the detection box.
[0016] Optionally, switch door bodies are hingedly connected to the front sides of the detection box.
[0017] By adopting the above technical scheme, the switch door bodies are opened to facilitate taking and placing the light guide plates.
[0018] In summary, the utility model has at least one of the following beneficial effects:
[0019] Start multiple groups of high-temperature-resistant fans to generate air flow and cooperate with multiple groups of air exchange pipes, so that the air exchange rate of the detection box and the inner cavity of the air exchange box can be increased, and the hot air temperature distribution in the inner cavity of the detection box is uniform.
[0020] Starting the second electric slide rail and the first electric slide rail can drive the infrared distance sensor to move forward and backward and left and right, and the infrared distance sensor can automatically determine the vertical distance between the infrared distance sensor and the light guide plate. When the light guide plate deforms, the vertical distance between the infrared distance sensor and the light guide plate will change abnormally, and the signal can be automatically transmitted to the PLC control panel. The PLC control panel can automatically control the alarm to start, so as to alarm the staff, and the high-temperature resistance of the light guide plate is convenient to monitor. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a front view of the structure of the utility model;
[0022] Figure 2 It is a front view of the structure of the utility model;
[0023] Figure 3 It is a front view of the structure of the utility model; Figure 1 It is an enlarged structure diagram of A part of the utility model.
[0024] In the figure: 1, first straight plate; 2, air exchange pipe; 3, high-temperature-resistant fan; 4, air exchange box; 5, mesh plate; 6, detection box; 7, temperature sensor; 8, PLC control panel; 9, alarm; 10, second straight plate; 11, infrared distance sensor; 12, first electric slide block; 13, first electric slide rail; 14, jack; 15, T-shaped plate; 16, electric heating pipe; 17, mesh cover; 18, second electric slide rail; 19, second electric slide block; 20, switch door body. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings Figures 1-3 The utility model will be further described in detail.
[0026] Please refer to the drawings in the specification Figure 1 , 2And 3, the utility model provides a kind of light guide plate high temperature resistance detection device, including detection box body 6, heating assembly is installed in the upper end position of the inner chamber of detection box body 6, heating assembly includes electric heating tube 16, electric heating tube 16 is fixed at the upper surface of the inner chamber of detection box body 6, electric heating tube 16 is externally equipped with with the fixed mesh enclosure 17 of the upper surface of the inner chamber of detection box body 6, the lower end position of the inner chamber of detection box body 6 is evenly installed with multiple groups of mesh screen 5, multiple groups of mesh screen 5 are arranged below mesh enclosure 17, the front side position of detection box body 6 is hinged with switch door body 20, the outside of switch door body 20 is installed with vertical antiskid handle.
[0027] open switch door body 20 and place appropriate light guide plate on mesh screen 5 at appropriate position, after closing switch door body 20, start electric heating tube 16 to generate heat to improve the temperature of the inner chamber of detection box body 6 and then carry out high temperature treatment to light guide plate.
[0028] Please refer to the drawing in the specification Figure 1 And 3 , the lower end position of the outer wall of one side of detection box body 6 is embedded with temperature sensor 7, the upper end position of the outer wall of one side of detection box body 6 is respectively installed with PLC control panel 8 and alarm 9, PLC control panel 8 is arranged below alarm 9, electric heating tube 16 is electrically connected between PLC control panel 8. Under the action of temperature sensor 7, the temperature of the inner chamber of detection box body 6 can be automatically monitored, when temperature is too high or too low, automatic signal transmission can be given to PLC control panel 8 to control electric heating tube 16 to open or close, to facilitate the temperature control of the inner chamber of detection box body 6.
[0029] Please refer to the drawing in the specification Figure 1 、 2 And 3, the upper end position of detection box body 6 is respectively installed with second straight plate 10 and sliding assembly, sliding assembly includes second electric sliding rail 18, second electric sliding rail 18 is provided with two groups, two groups of second electric sliding rail 18 are respectively installed at both ends of the upper surface of detection box body 6, second electric sliding block 19 is installed on two groups of second electric sliding rail 18, first straight plate 1 is installed on the outer wall of two groups of second electric sliding block 19, first electric sliding rail 13 is installed at the upper end position of the outer wall of two groups of first straight plate 1, first electric sliding block 12 is installed outside first electric sliding rail 13, infrared distance measuring sensor 11 is installed at the bottom of first electric sliding block 12, PLC control panel 8 is electrically connected between infrared distance measuring sensor 11, temperature sensor 7 and alarm 9.
[0030] When the light guide plate is heated to a certain temperature and time, it is taken out and placed on the second straight plate 10, the second electric sliding rail 18 and the first electric sliding rail 13 are started to drive the second electric sliding block 19 and the first electric sliding block 12 to move horizontally, and then the infrared distance sensor 11 can move forward and backward and left and right, the infrared distance sensor 11 is started to automatically determine the vertical distance between the light guide plate, when the light guide plate deforms, the vertical distance between the infrared distance sensor 11 and the light guide plate will change abnormally and can automatically transmit the signal to the PLC control panel 8, the PLC control panel 8 can automatically control the alarm 9 to start to warn the staff, which is convenient for monitoring the high temperature resistance of the light guide plate.
[0031] Please refer to the drawings in the specification Figure 1 、 2 and 3, a plurality of jack holes 14 are uniformly arranged on the upper surface of the second straight plate 10, and T-shaped plates 15 are arranged on the upper surface of the second straight plate 10 and are inserted into the jack holes 14. The positions of the light guide plates can be limited by the plurality of T-shaped plates 15 to avoid displacement during placement.
[0032] Please refer to the drawings in the specification Figure 1 and 2 The outer wall of one side of the detection box 6 is provided with the air exchange box 4, the air exchange pipes 2 are arranged at the upper and lower ends of the inner cavity of the air exchange box 4 and extend into the inner cavity of the detection box 6, the two groups of air exchange pipes 2 are arranged alternately between the plurality of mesh plates 5, and the plurality of high-temperature-resistant fans 3 are uniformly arranged at the middle position of the inner cavity of the air exchange box 4. The air flow generated by the plurality of high-temperature-resistant fans 3 can increase the air exchange rate of the inner cavities of the detection box 6 and the air exchange box 4, so that the hot air temperature distribution in the inner cavity of the detection box 6 is uniform.
[0033] Working principle: when the light guide plate high temperature resistance detection device is used, the switch door 20 is opened and the appropriate light guide plate is placed on the mesh plate 5 at the appropriate position, the switch door 20 is closed and the electric heating pipe 16 is started to generate heat, so that the temperature in the inner cavity of the detection box 6 is increased and the light guide plate is treated at high temperature, the temperature in the inner cavity of the detection box 6 is automatically monitored under the action of the temperature sensor 7, and when the temperature is too high or too low, the signal can be automatically transmitted to the PLC control panel 8 to control the electric heating pipe 16 to start or stop, so as to control the temperature in the inner cavity of the detection box 6.
[0034] The high-temperature-resistant fan groups 3 are started to generate air flow, and the air exchange rate in the detection box 6 and the inner cavity of the air exchange box 4 can be increased through the cooperation of the air exchange pipes 2, so that the hot air temperature distribution in the inner cavity of the detection box 6 is uniform. When the light guide plate is heated to a certain temperature and time, it is taken out and placed on the second straight plate 10, and the second electric sliding rail 18 and the first electric sliding rail 13 are started to drive the second electric sliding block 19 and the first electric sliding block 12 to move horizontally, and then the infrared distance sensor 11 can move forward and backward and left and right. The infrared distance sensor 11 automatically measures the vertical distance between the infrared distance sensor 11 and the light guide plate.
[0035] When the light guide plate deforms, the vertical distance between the infrared distance sensor 11 and the light guide plate will change abnormally, and a signal can be automatically transmitted to the PLC control panel 8. The PLC control panel 8 can automatically control the alarm 9 to start, so as to alarm the workers, and the high-temperature-resistant performance of the light guide plate can be monitored. The T-shaped plates 15 are inserted into the corresponding insertion holes 14, and the positions of the light guide plates can be limited by the T-shaped plates 15 to avoid the position deviation of the light guide plates during placement.
[0036] The standard parts used in the utility model file can be purchased from the market, and the components in the utility model file can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.
[0037] The above are preferred embodiments of the utility model, which do not limit the protection scope of the utility model, so that: any equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.
Claims
1. A device for testing the high-temperature resistance of a light guide plate, comprising a testing chamber (6), characterized in that: A heating assembly is installed at the upper end of the inner cavity of the detection box (6). Multiple sets of perforated plates (5) are evenly installed at the lower end of the inner cavity of the detection box (6). A temperature sensor (7) is embedded at the lower end of one side of the outer wall of the detection box (6). A PLC control panel (8) and an alarm (9) are installed at the upper end of one side of the outer wall of the detection box (6). A second straight plate (10) and a sliding assembly are installed at the upper end of the detection box (6). An infrared ranging sensor (11) is installed on the sliding assembly. The PLC control panel (8) is electrically connected to the infrared ranging sensor (11), the temperature sensor (7), and the alarm (9).
2. The device for testing the high-temperature resistance of a light guide plate according to claim 1, characterized in that: The heating assembly includes an electric heating tube (16), which is fixed on the upper surface of the inner cavity of the detection box (6). The electric heating tube (16) is covered with a mesh cover (17) that is fixed to the upper surface of the inner cavity of the detection box (6). The electric heating tube (16) is electrically connected to the PLC control panel (8).
3. The device for testing the high-temperature resistance of a light guide plate according to claim 1, characterized in that: The sliding assembly includes a second electric slide rail (18), which is provided in two sets. The two sets of the second electric slide rail (18) are respectively installed at both ends of the upper surface of the detection box (6). A second electric slider (19) is installed on each of the two sets of the second electric slide rail (18). A first straight plate (1) is installed on the outer wall of each of the two sets of the second electric slider (19). A first electric slide rail (13) is installed at the upper end of the outer wall of each of the two sets of the first straight plate (1). A first electric slider (12) fixed to the infrared ranging sensor (11) is installed on the outside of the first electric slide rail (13).
4. The device for testing the high-temperature resistance of a light guide plate according to claim 1, characterized in that: Multiple sets of insertion holes (14) are evenly opened around the upper surface of the second straight plate (10), and T-shaped plates (15) that are inserted and engaged with the insertion holes (14) are provided around the upper surface of the second straight plate (10).
5. The device for testing the high-temperature resistance of a light guide plate according to claim 1, characterized in that: A ventilation box (4) is installed on the outer wall of one side of the detection box (6). Ventilation pipes (2) extending into the inner cavity of the detection box (6) are installed at both the upper and lower ends of the inner cavity of the ventilation box (4). Multiple sets of high-temperature resistant fans (3) are evenly installed in the middle of the inner cavity of the ventilation box (4).
6. The device for testing the high-temperature resistance of a light guide plate according to claim 1, characterized in that: Both sides of the front of the detection box (6) are hinged with switch doors (20).