Tool for detecting light transmittance of light guide body

Abstract

The utility model relates to a light guide body light transmittance detection tool, which comprises a machine table, a mounting seat is arranged above the machine table, a light shielding cylinder is arranged on the mounting seat, a detection cavity is arranged in the light shielding cylinder, a centering device is arranged in the detection cavity, and the centering device is used for centering a detected light guide column. A liftable connecting seat is arranged above the light shielding cylinder, the connecting seat is matched with the detection cavity, a light-transmitting lamp is arranged at one end, facing the detection cavity, of the connecting seat, the mounting seat is provided with a through light-transmitting hole, the light-transmitting hole is communicated with the detection cavity, an illuminometer is arranged below the mounting seat, and the illuminometer is communicated with the light-transmitting lamp. The illuminometer is provided with a light transmitting hole, the detection end of the illuminometer is opposite to the light transmitting hole, the light shielding cylinder comprises a fixing part and a dismounting part which can be dismounted, the fixing part is fixed on the mounting seat, and the dismounting part is detachably connected with the fixing part. The light guide body light transmittance detection device has the following advantages and effects that the accuracy of light transmittance detection of the light guide body can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of light guide body detection, in particular to a light guide body light transmittance detection tooling. Background Art

[0002] A light guide body is a component that transmits light from a light source to another point at a certain distance from the light source with minimal loss. In the automotive field, light guide bodies are generally used in various lamps such as driving lights and ambient lights, and are generally in the shape of a long solid bar. During the processing of light guide bodies, it is necessary to detect the light transmittance of the light guide body. Currently, the detection method for the light transmittance of light guide bodies is to shoot light from a light source at one end of the light guide body towards an illuminometer located at the other end of the light guide body, and compare the value detected by the illuminometer with the value within the qualified range to determine whether the light transmittance of the light guide body is qualified.

[0003] For example, a Chinese patent document with the publication number CN219417199U discloses a light transmittance detection device for glass production, including a detection table and conveying rollers. Above the detection table, there is a light transmission lamp. A light transmission opening is provided on the detection table. An illuminometer is fixedly installed below the detection table, and the illuminometer is directly opposite the light transmission lamp and the light transmission opening. Above the detection table, there is an adjustment plate, and a mounting plate is fixedly installed on the adjustment plate. The light transmission lamp is arranged on the mounting plate. A lifting mechanism for automatically driving the light transmission lamp to lift is arranged on the side of the detection table. A feeding belt is arranged on the side of the detection table, the surface of the feeding belt is parallel to the conveying rollers, and a pushing member for aligning the glass is arranged on the feeding belt.

[0004] In the above technical solution, it is mainly used to detect the light transmittance of glass, so the light transmission lamp can be directly exposed outside. When detecting a light guide body, since the light guide body is cylindrical, the length of the light guide body sample is much greater than the thickness of the glass, resulting in an increase in the distance between the light source and the illuminometer. Therefore, if the light transmission lamp is directly exposed outside, it is easily affected by external factors, which will affect the accuracy of the light transmittance detection of the light guide body. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a light guide body light transmittance detection tooling, which can ensure the accuracy of the light transmittance detection of the light guide body.

[0006] To achieve the above object, the utility model provides the following technical solution: A light guide body light transmittance detection tooling, which includes a machine table. An installation seat is provided above the machine table. The installation seat is provided with a light-shielding cylinder. A detection cavity is provided inside the light-shielding cylinder. A centering device is provided inside the detection cavity. The centering device is used to center the light guide column to be detected. A liftable connection seat is provided above the light-shielding cylinder. The connection seat is adapted to the detection cavity. A transmissive lamp is provided at one end of the connection seat facing the detection cavity. The installation seat is provided with a through transmissive hole. The transmissive hole is communicated with the detection cavity. An illuminometer is provided below the installation seat. The detection end of the illuminometer faces the transmissive hole. The light-shielding cylinder includes a fixed part and a detachable and installable disassembly part. The fixed part is fixed to the installation seat. A detachable connection is formed between the disassembly part and the fixed part.

[0007] The utility model is further arranged as follows: The fixed part is provided with a protruding limit protrusion. The disassembly part is provided with a limit groove opposite to the limit protrusion. The limit protrusion is adapted to the limit groove.

[0008] The utility model is further arranged as follows: Vertical guide rods and lead screws are provided on both sides of the light-shielding cylinder. The end of the guide rod is fixed to the machine table. The end of the lead screw is rotatably connected to the machine table. Both sides of the connection seat extend towards the guide rod and the lead screw respectively, and are respectively provided with a guide hole and a threaded hole. One end of one side of the connection seat is sleeved on the outer periphery of the guide rod through the guide hole, and a sliding fit can be formed between the two. The other end of the other side is sleeved on the outer periphery of the lead screw through the threaded hole, and a threaded fit can be formed between the two. A lifting motor is provided at the end of the lead screw. The lifting motor is used to drive the lead screw to rotate.

[0009] The utility model is further arranged as follows: The centering device includes driving rods. There are multiple driving rods and they are evenly distributed in a circle. One end of each driving rod is rotatably connected to the installation seat, and the other end extends towards the center as a connection end. A centering rod arranged in the vertical direction is fixed on the connection end. A transmission disc is provided above the driving rods. An arc-shaped guide hole is provided on the transmission disc. A relief opening is provided at the center of the transmission disc. The relief opening faces the transmissive hole. A centering motor is provided below the installation seat. The centering motor is used to drive the driving rods to rotate.

[0010] The utility model is further arranged as follows: A protruding guide flange is provided at the bottom of the installation seat. The guide flange surrounds the detection end of the illuminometer.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] Since a light-shielding cylinder is provided and the connecting seat for installing the light-transmitting lamp is adapted to the detection cavity, a light-shielding space can be formed in the detection cavity of the light-shielding cylinder. After the light guide to be detected is placed in the detection cavity, the disassembly and assembly part of the light-shielding cylinder is covered with the fixing part, and the influence of external light sources on the accuracy of the light transmittance detection of the light guide can be reduced. Therefore, the technical problem in the prior art that the light-transmitting lamp is directly exposed outside and is easily affected by external factors, thereby affecting the accuracy of the light transmittance detection of the light guide is effectively solved. And the light guide is centered by the centering device to ensure that the centers of the light-transmitting lamp, the light guide and the detection end of the illuminometer are located on the same axis, so that the accuracy of the light transmittance detection of the light guide can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 is a partial structural schematic diagram of the centering device in the present invention;

[0016] Figure 4 is a schematic diagram of the connection structure between the disassembly and assembly part and the fixing part in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] Such as Figures 1 to 4As shown in the figure, the utility model discloses a light guide body light transmittance detection tooling, which includes a machine table 1. Above the machine table 1, there is an installation seat 2. The installation seat 2 is provided with a light-shielding cylinder 3. Inside the light-shielding cylinder 3, there is a detection cavity 300. Inside the detection cavity 300, there is a centering device 4. The centering device 4 is used to center the light guide column to be detected. Above the light-shielding cylinder 3, there is a liftable connection seat 5. The connection seat 5 is adapted to the detection cavity 300. At one end of the connection seat 5 facing the detection cavity 300, there is a transmissive lamp 6. The installation seat 2 is provided with a through light-transmitting hole, and the light-transmitting hole is communicated with the detection cavity 300. Below the installation seat 2, there is an illuminometer 7. The detection end 71 of the illuminometer 7 faces the light-transmitting hole. The light-shielding cylinder 3 includes a fixed part 31 and a detachable and installable part 32. The fixed part 31 is fixed to the installation seat 2, and a detachable connection is formed between the detachable and installable part 32 and the fixed part 31. Due to the setting of the light-shielding cylinder 3, and the connection seat 5 for installing the transmissive lamp 6 is adapted to the detection cavity 300, a light-shielded space can be formed in the detection cavity 300 inside the light-shielding cylinder 3. After the light guide body 100 to be detected is placed in the detection cavity 300, the detachable and installable part 32 of the light-shielding cylinder 3 is covered with the fixed part 31, which can reduce the influence of external light sources on the accuracy of the light transmittance detection of the light guide body 100. And the light guide body 100 is centered by the centering device 4, so as to ensure that the centers of the transmissive lamp 6, the light guide body 100, and the detection end 71 of the illuminometer 7 are on the same axis. In this way, the accuracy of the light transmittance detection of the light guide body 100 can be improved. During detection, the light source emitted by the transmissive lamp 6 passes through the light guide body 100 and is detected by the detection end 71 of the illuminometer 7, and the corresponding value can be displayed on the display screen of the illuminometer 7. Therefore, the user can compare the displayed value with the value corresponding to the qualified light transmittance of the light guide body 100 in the corresponding standard to determine whether the light transmittance of the light guide body 100 is qualified. Among them, the illuminometer 7 is a prior art, so its specific structure and principle will not be elaborated here.

[0020] In this embodiment, the detachable structure between the detachable and installable part 32 and the fixed part 31 is that a protruding limit protrusion 311 is provided on the fixed part 31, and a limit groove 321 opposite to the limit protrusion 311 is provided on the detachable and installable part 32. The limit protrusion 311 is adapted to the limit groove 321. Therefore, after the detachable and installable part 32 is covered with the fixed part 31, the limit protrusion 311 can be inserted into the limit groove 321, and the connection between the two is realized through the friction generated by the contact between the two. In this way, it can be ensured that the disassembly and installation of the detachable and installable part 32 are more convenient and fast.

[0021] In this embodiment, the specific structure for the lifting of the light-transmitting lamp 6 is that vertical guide rods 8 and lead screws 9 are provided on both sides of the light-shielding cylinder 3. The ends of the guide rods 8 are fixed to the machine table 1, and the ends of the lead screws 9 are rotatably connected to the machine table 1. Both sides of the connecting seat 5 extend towards the guide rod 8 and the lead screw 9 respectively, and are respectively provided with a guide hole and a threaded hole. One end of the connecting seat 5 is sleeved on the outer periphery of the guide rod 8 through the guide hole, and a sliding fit can be formed between the two. The other end is sleeved on the outer periphery of the lead screw 9 through the threaded hole, and a threaded fit can be formed between the two. A lifting motor 10 is provided at the end of the lead screw 9, and the lifting motor 10 is used to drive the lead screw 9 to rotate. Since the lengths of the samples of the same type of light guide 100 are not consistent during the actual detection process, in order to ensure that the distance between the light-transmitting lamp 6 and the sample of the light guide 100 is consistent and to ensure the accuracy of the light transmittance detection of the light guide 100, the lifting motor 10 can be driven to drive the lead screw 9 to rotate. As the lead screw 9 rotates, the connecting seat 5 sleeved on the outer periphery of the lead screw 9 and forming a threaded fit can move along the direction of the lead screw 9 under the guiding action of the guide rod 8. In this way, the adjustment of the distance between the light-transmitting lamp 6 and the light guide 100 can be realized. When the light guide 100 to be detected is placed in the detection cavity 300, since the end of the light guide 100 needs to contact the transmission plate, the distance between the detection end 71 of the illuminometer 7 and the end of the light guide 100 can be ensured to be consistent.

[0022] In this embodiment, the specific structure of the centering device 4 includes driving rods 41. There are multiple driving rods 41 and they are evenly distributed in a circle. One end of the driving rod 41 is rotatably connected to the mounting seat 2, and the other end extends towards the center as a connecting end. A centering rod 42 arranged in the vertical direction is fixed on the connecting end. A transmission disk 43 is provided above the driving rod 41. An arc-shaped guide hole 431 is provided on the transmission disk 43, and a relief opening 432 is provided at the center of the transmission disk 43. The relief opening 432 is opposite to the light-transmitting hole. A centering motor 44 is provided below the mounting seat 2, and the centering motor 44 is used to drive the driving rod 41 to rotate. After the light guide 100 to be detected is placed in the detection cavity 300, one side of the driving rod 41 is driven to rotate by the centering motor 44, so that the rotating rod can move along the path of the arc-shaped guide hole 431, and the transmission disk 43 can be rotated. As the transmission disk 43 rotates, the other driving rods 41 can be synchronously driven to rotate under the action of the arc-shaped guide hole 431. In this way, the centering rod 42 can move in the radial direction to realize the centering of the light guide 100.

[0023] In this embodiment, a protruding guide flange 21 is further provided at the bottom of the mounting seat 2. The guide flange 21 surrounds the detection end 71 of the illuminometer 7. Through the setting of the guide flange 21, the outer wall of the detection end 71 can be made to contact the inner wall of the guide flange 21. In this way, the installation of the detection end 71 can be completed through the friction generated between the two.

[0024] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation to the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute creatively as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. A light guide body light transmittance detection tooling, characterized in that It includes a machine platform, above which there is a mounting seat. The mounting seat is provided with a light-shielding cylinder. Inside the light-shielding cylinder, there is a detection cavity. Inside the detection cavity, there is a centering device which is used to center the light guide column to be detected. Above the light-shielding cylinder, there is a liftable connecting seat which is adapted to the detection cavity. At one end of the connecting seat facing the detection cavity, there is a light-transmitting lamp. The mounting seat is provided with a through light-transmitting hole which is communicated with the detection cavity. Below the mounting seat, there is an illuminometer, and the detection end of the illuminometer faces the light-transmitting hole. The light-shielding cylinder includes a fixed part and a detachable part. The fixed part is fixed to the mounting seat, and a detachable connection is formed between the detachable part and the fixed part.

2. The light guide body light transmittance detection tooling according to claim 1, wherein On the fixed part, there are protruding limit protrusions, and on the detachable part, there are limit grooves opposite to the limit protrusions, and the limit protrusions are adapted to the limit grooves.

3. The light guide body light transmittance detection tooling according to claim 1, characterized in that, On both sides of the light-shielding cylinder, there are vertically arranged guide rods and lead screws. The ends of the guide rods are fixed to the machine platform, and the ends of the lead screws are rotatably connected to the machine platform. Both sides of the connecting seat extend towards the guide rod and the lead screw respectively, and are respectively provided with a guide hole and a threaded hole. One end of one side of the connecting seat is sleeved on the outer periphery of the guide rod through the guide hole, and a sliding fit can be formed between the two. The other end of the other side is sleeved on the outer periphery of the lead screw through the threaded hole, and a threaded fit can be formed between the two. At the end of the lead screw, there is a lifting motor which is used to drive the lead screw to rotate.

4. A light guide body light transmittance detection tooling according to claim 1, characterized in that, The centering device includes driving rods. There are multiple driving rods which are evenly distributed in a circle. One end of each driving rod is rotatably connected to the mounting seat, and the other end extends towards the center as a connecting end. On the connecting end, there is a centering rod arranged in the vertical direction. Above the driving rods, there is a transmission disc. On the transmission disc, there is an arc-shaped guide hole. In the center of the transmission disc, there is a relief opening which is opposite to the light-transmitting hole. Below the mounting seat, there is a centering motor which is used to drive the driving rods to rotate.

5. A light guide body light transmittance detection tooling according to claim 1, characterized in that, At the bottom of the mounting seat, there is a protruding guide flange which surrounds the detection end of the illuminometer.

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