LED bulb testing device

Abstract

The utility model discloses an LED bulb testing device which comprises a conveying belt, a workbench, a plc controller and a man-machine interaction panel, the workbench is provided with a testing device, the testing device comprises a supporting frame, a lifting cylinder, a rotating cylinder, a conductive cap, a photosensitive sensor, an infrared sensor and a limiting assembly, and the conveying belt drives a code disc to move in a stepping mode. The testing process is automatically started in cooperation with an infrared sensor, efficient and automatic testing is achieved, manual intervention is reduced, and continuous operation can be achieved. The limiting assembly adopts a bidirectional screw rod and other structures, the LED bulb is bidirectionally and symmetrically fixed, and a spring rod and a rubber gasket not only ensure stable fixation, but also can protect the bulb, adapt to different sizes, and prevent shaking during testing to ensure accurate results. The lifting cylinder, the rotating cylinder and the conductive cap cooperatively simulate real assembly and electrification, so that the test is closer to an actual use scene.

Description

Technical Field

[0001] This utility model belongs to the field of light bulb testing technology, and specifically relates to an LED light bulb testing device. Background Technology

[0002] Early testing of LED bulbs relied heavily on manual operation. Testers used simple tools to inspect each bulb individually, such as manually connecting it to a power source to check if it lit up, and visually judging the brightness and color. This method was extremely inefficient, and the test results were highly susceptible to subjective factors, easily leading to misjudgments and omissions. In the early stages of automation technology development, some simple automated testing equipment emerged, such as devices that used conveyor belts to transport bulbs and used fixed electrodes for power-on testing. However, these devices were limited in function, only detecting whether the bulb lit up, and could not accurately measure key optical performance indicators such as luminous intensity, light uniformity, and color coordinates. Furthermore, the lack of effective limiting mechanisms for fixing the bulbs allowed them to wobble during testing, resulting in large deviations in test data and failing to meet increasingly stringent quality inspection standards. Most existing testing devices did not adequately consider simulating the conditions of LED bulbs in real-world usage scenarios. In practical applications, bulbs undergo installation and rotation, actions that traditional testing equipment struggles to simulate, causing test results to be disconnected from actual usage and failing to accurately reflect the bulb's performance in complex operating environments. Utility Model Content

[0003] To address the problems mentioned in the background art, this utility model provides the following technical solution: an LED bulb testing device, comprising a conveyor belt, a workbench, a PLC controller, and a human-machine interface panel. The PLC controller is disposed within the workbench, and the human-machine interface panel is mounted on the outer wall of the workbench. The PLC controller is connected to the conveyor belt and the human-machine interface panel via wires. A testing device is disposed on the workbench, comprising a support frame, a lifting cylinder, a rotating cylinder, a conductive cap, a photosensitive sensor, an infrared sensor, and a limit assembly. The support frame is mounted on the workbench, and the lifting cylinder is mounted on the outer wall of the workbench. At the top of the workbench, the push rod of the lifting cylinder passes through the top of the workbench and connects to the rotary cylinder. The conductive cap is connected to the rotor of the rotary cylinder. The photosensitive sensor is installed inside the support frame. The infrared sensor is connected to the support frame through an extension frame. The emission port of the infrared sensor faces the conveyor belt. The limiting component is located inside the support frame and adjacent to the conveyor belt. The limiting component is used to limit the rotation of the LED bulb. The PLC controller is connected to the lifting cylinder, the rotary cylinder, the conductive cap, the photosensitive sensor, the infrared sensor, and the limiting component through wires.

[0004] Furthermore, the limiting component includes a frame, a bidirectional screw, a drive motor, a movable block, and a pressure sleeve. The frame is connected between the workbench and the support frame and is located inside the conveyor belt. The bidirectional screw is installed inside the frame. The drive motor is connected to the outer wall of the frame. The drive shaft of the drive motor is connected to the bidirectional screw. The movable block is connected to both ends of the bidirectional screw. The pressure sleeve is connected to the movable block and is symmetrically arranged about the conveyor belt. The drive motor is connected to the PLC controller via wires.

[0005] Furthermore, the pressure sleeve is connected to the movable block via a spring rod.

[0006] Furthermore, a rubber gasket is adhered to the side of the pressure sleeve adjacent to the conductive cap.

[0007] The beneficial effects of this invention are as follows: The conveyor belt drives the encoder to move stepwise, and the infrared sensor automatically starts the testing process, achieving efficient automated testing, reducing manual intervention, and enabling continuous operation. The limiting component adopts a bidirectional screw structure to symmetrically fix the LED bulb in both directions. The spring rod and rubber gasket ensure stable fixation and protect the bulb, adapting to different sizes and preventing shaking during testing to ensure accurate results. The lifting and rotating cylinders and conductive caps work together to simulate real assembly and power-on, making the testing closer to actual use scenarios. The photosensitive sensor accurately detects the light intensity for the PLC controller to determine the luminous performance, providing data support for convenient operation and monitoring of the human-machine interface panel. Operators can flexibly set parameters through the panel, comprehensively improving the applicability and ease of use of the device. Attached Figure Description

[0008] Figure 1 This is a first-view perspective perspective view of the present invention;

[0009] Figure 2 This is a second-view perspective perspective view of the present invention;

[0010] Figure 3 This is the front view of the present invention;

[0011] Figure 4 This is the left view of the present invention;

[0012] Figure 5 This is a top view of the present invention;

[0013] Figure 6 This is a schematic diagram showing the connection relationship between the movable block, spring rod, and pressure sleeve in this utility model;

[0014] Figure 7 This is a schematic diagram showing the connection relationship between the conductive cap, the rotary cylinder, and the lifting cylinder in this utility model.

[0015] The labels in the diagram mean: 1-Conveyor belt; 2-Workbench; 3-PLC controller; 4-Human-machine interface panel; 5-Support frame; 6-Lifting cylinder; 7-Rotating cylinder; 8-Conductive cap; 9-Photosensitive sensor; 10-Infrared sensor; 11-Frame; 12-Bidirectional screw; 13-Drive motor; 14-Moving block; 15-Pressure sleeve; 16-Spring rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-7 This utility model provides the following technical solution: an LED bulb testing device, including a conveyor belt 1, a workbench 2, a PLC controller 3, and a human-machine interface panel 4. The PLC controller 3 is disposed inside the workbench 2, and the human-machine interface panel 4 is installed on the outer wall of the workbench 2. The PLC controller 3 is connected to the conveyor belt 1 and the human-machine interface panel 4 via wires. A testing device is disposed on the workbench 2. The testing device includes a support frame 5, a lifting cylinder 6, a rotating cylinder 7, a conductive cap 8, a photosensitive sensor 9, an infrared sensor 10, and a limiting component. The support frame 5 is installed on the workbench 2, and the lifting cylinder 6 is installed on the top of the workbench 2. The push rod of the lifting cylinder 6 passes through the top of the workbench 2 and is connected to the rotary cylinder 7. The conductive cap 8 is connected to the rotor of the rotary cylinder 7. The photosensitive sensor 9 is installed in the support frame 5. The infrared sensor 10 is connected to the support frame 5 through an extension frame. The emission port of the infrared sensor 10 faces the conveyor belt 1. The limiting component is installed in the support frame 5 and is located near the conveyor belt 1. The limiting component is used to limit the rotation of the LED bulb. The PLC controller 3 is connected to the lifting cylinder 6, the rotary cylinder 7, the conductive cap 8, the photosensitive sensor 9, the infrared sensor 10, and the limiting component through wires.

[0018] Using the above structure, the conveyor belt 1 drives the encoder to move stepwise. The infrared sensor 10 can detect the encoder's approach in time and send a feedback signal to the PLC controller, thereby initiating the subsequent testing process. The limit component can fix the LED bulb to prevent shaking during testing. The lifting cylinder 6, the rotating cylinder 7, and the conductive cap 8 work together to simulate the actual assembly action of the bulb and light it up when powered on. The photosensitive sensor 9 detects the light intensity, providing data for the PLC controller to judge the bulb's luminous performance. The human-machine interface panel 4 allows operators to monitor and set the testing process.

[0019] In this embodiment, the limiting component includes a frame 11, a bidirectional screw 12, a drive motor 13, a movable block 14, and a pressure sleeve 15. The frame 11 is connected between the workbench 2 and the support frame 5 and is located inside the conveyor belt 1. The bidirectional screw 12 is installed inside the frame 11. The drive motor 13 is connected to the outer wall of the frame 11, and the drive shaft of the drive motor 13 is connected to the bidirectional screw 12. The movable block 14 is connected to both ends of the bidirectional screw 12. The pressure sleeve 15 is connected to the movable block 14 and is symmetrically arranged about the conveyor belt 1. The drive motor 13 is connected to the PLC controller 3 through wires.

[0020] With the above structure, when the infrared sensor 10 detects that the encoder disk is in place, the PLC controller controls the drive motor 13 to start, the bidirectional screw 12 rotates, causing the movable block 14 to move towards each other, and the pressure sleeve 15 moves closer to and fixes the LED bulb. This bidirectional symmetrical fixing method ensures that the bulb remains stable during the test and avoids the test results being affected by shaking.

[0021] In this embodiment, the pressure sleeve 15 is connected to the movable block 14 via a spring rod.

[0022] With the above structure, the spring rod has a buffering effect. When the pressure sleeve 15 fixes the LED bulb, the spring rod can prevent the pressure sleeve 15 from applying excessive pressure to the bulb, thus preventing the bulb from being damaged due to excessive force. The spring rod can also adapt to LED bulbs of different sizes, ensuring that appropriate pressure can be provided when fixing bulbs of different specifications.

[0023] In this embodiment, a rubber gasket is bonded to the side of the pressure sleeve 15 adjacent to the conductive cap 8.

[0024] With the above structure, the rubber gasket is soft and has a certain friction. When the pressure sleeve 15 fixes the LED bulb, the rubber gasket can increase the friction with the bulb surface, making the fixation more secure. The rubber gasket can also protect the bulb surface and prevent the pressure sleeve 15 from directly contacting the bulb and causing scratches.

[0025] Working Principle: Multiple LED bulbs are equidistantly mounted on the code disk. The conveyor belt 1 drives the code disk to move in a stepping motion, with each movement covering the distance between two LED bulbs on the code disk. When the code disk reaches the edge of the test area, the infrared sensor 10 quickly detects its approach and sends a signal back to the PLC controller. The PLC controller then issues a command to start the drive motor 13 in the limit assembly. The drive motor 13 rotates, causing the bidirectional screw 12 to rotate synchronously, and the moving blocks 14 to move towards each other, approaching the LED bulbs to be tested on the code disk until the pressure sleeve 15 firmly fixes the LED bulbs. After the limit operation is completed, the PLC controller controls the lifting cylinder 6 to start. The push rod of the lifting cylinder 6 extends, pushing the rotary cylinder 7 and the conductive cap 8 connected to it to move towards the LED bulbs on the code disk. Once the conductive cap 8 makes stable contact with the electrodes of the LED bulb, the rotary cylinder 7 starts to operate under the precise control of the PLC controller, driving the conductive cap 8 to rotate continuously, thus simulating the assembly action of the bulb in actual use. When the conductive cap 8 is energized, the LED bulb lights up. The photosensitive sensor 9 detects the intensity of the light emitted by the LED bulb and transmits the data to the PLC controller. The controller then determines whether the bulb's luminous performance meets the standard. After the test is completed, the PLC controller controls the push rod of the lifting cylinder 6 to retract, allowing the conductive cap 8 to smoothly separate from the LED bulb. Subsequently, the drive motor 13 in the limit assembly reverses, driving the bidirectional screw 12 to rotate in the opposite direction. The movable block 14 then drives the pressure sleeve 15 to gradually move away from the LED bulb, releasing the fixing constraint on the bulb. Immediately afterwards, the conveyor belt 1 restarts and repeats the above steps.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LED bulb testing device, comprising a conveyor belt, a workbench, a PLC controller, and a human-machine interface panel, wherein the PLC controller is disposed within the workbench, and the human-machine interface panel is mounted on the outer wall of the workbench; the PLC controller is connected to the conveyor belt and the human-machine interface panel via wires, characterized in that: A testing device is installed on the workbench. The testing device includes a support frame, a lifting cylinder, a rotating cylinder, a conductive cap, a photosensitive sensor, an infrared sensor, and a limiting component. The support frame is installed on the workbench, and the lifting cylinder is installed on the top of the workbench. The push rod of the lifting cylinder passes through the top of the workbench and is connected to the rotating cylinder. The conductive cap is connected to the rotor of the rotating cylinder. The photosensitive sensor is installed inside the support frame, and the infrared sensor is connected to the support frame through an extension frame. The emitter of the infrared sensor faces the conveyor belt. The limiting component is located inside the support frame and adjacent to the conveyor belt. The limiting component is used to limit the rotation of the LED bulb. The PLC controller is connected to the lifting cylinder, the rotating cylinder, the conductive cap, the photosensitive sensor, the infrared sensor, and the limiting component through wires.

2. The LED bulb testing device according to claim 1, characterized in that: The limiting assembly includes a frame, a bidirectional screw, a drive motor, a movable block, and a pressure sleeve. The frame is connected between the worktable and the support frame and is located inside the conveyor belt. The bidirectional screw is installed inside the frame. The drive motor is connected to the outer wall of the frame, and the drive shaft of the drive motor is connected to the bidirectional screw. The movable block is connected to both ends of the bidirectional screw. The pressure sleeve is connected to the movable block and is symmetrically arranged about the conveyor belt. The drive motor is connected to the PLC controller via wires.

3. The LED bulb testing device according to claim 2, characterized in that: The pressure sleeve is connected to the movable block via a spring rod.

4. The LED bulb testing device according to claim 2, characterized in that: A rubber gasket is bonded to the side of the pressure sleeve adjacent to the conductive cap.

Images