Positioning tool for testing LED nixie tube

Abstract

The utility model discloses a positioning tool for testing an LED nixie tube, which comprises a base, a placing frame for placing the LED nixie tube is fixedly arranged in the middle of the base, movable frames are symmetrically and slidably arranged at two ends of the base, an electrification detection circuit board is fixedly arranged in the top end of each movable frame, and when the movable frames are controlled to move, the movable frames are driven by the power-on detection circuit board. The positioning block at the top of the moving frame is located on the upper surface of the LED nixie tube, the position of the LED nixie tube can be limited, the LED nixie tube is prevented from deviating when a power-on detection circuit board makes contact with a pin connecting wire connected with the LED nixie tube, the transmission belt is driven to rotate after detection is completed, a material pushing rod on the transmission belt extrudes one side of the LED nixie tube, and the LED nixie tube is driven to rotate. According to the LED nixie tube detection device, the detected LED nixie tubes are moved out of the detection position, then the next group of LED nixie tubes are placed on the surface of the top end of the placement frame, and when a worker controlling the group of LED nixie tubes to be detected is idle, the previous group of LED nixie tubes at the top of one end of the placement frame can be taken out of the placement frame, so that the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of LED digital tube technology, specifically to a positioning fixture for testing LED digital tubes. Background Technology

[0002] LED digital tubes are digital display devices composed of multiple light-emitting diodes (LEDs). They are mainly used to display numbers (0-9) and some symbols, and are commonly used in electronic computers, instruments, clocks, outdoor lighting projects (such as guardrail lights), and other scenarios.

[0003] In the production process of LED digital tubes, testing is required. Current technology typically involves placing the LED digital tube on a rack and using a movable detection circuit to contact its pins for testing. However, when the detection circuit contacts the LED digital tube, it may squeeze or push against it, causing the tube to shift and affecting the testing results. Furthermore, after testing, the LED digital tube must be removed, and the next set to be tested must be placed on the rack before the detection circuit is moved to contact its pins again. This process is cumbersome and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a positioning fixture for testing LED digital tubes, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for testing LED digital tubes, comprising a base, a placement rack for placing LED digital tubes fixedly installed in the middle of the base, movable racks symmetrically and slidably installed at both ends of the base, a power-on detection circuit board fixedly installed inside the top of the movable rack, a positioning block fixedly installed on the top of the movable rack, a transmission belt driven on one side of the placement rack, and push rods fixedly installed at equal intervals on the outer surface of the transmission belt, the push rods being made of extrudable and recoverable rubber material.

[0006] As a further preferred embodiment of this technical solution, a transmission wheel is rotatably mounted on one side of the top of both ends of the placement rack via a pivot pin, and a transmission belt is installed between the two transmission wheels. A first motor is fixedly mounted on one end of the base corresponding to the position of one of the transmission wheels, and the output end of the first motor is fixedly connected to one of the transmission wheels.

[0007] As a further preferred embodiment of this technical solution, the top of the base is symmetrically fixedly installed with limiting rods, the movable frame is slidably installed between the two limiting rods, the middle of the base is rotatably installed with a bidirectional screw through a bearing, and a second motor is fixedly installed at one end of the base corresponding to the position of the bidirectional screw. The output end of the second motor is fixedly connected to one end of the bidirectional screw through a shaft connector, and the two ends of the bidirectional screw are respectively threaded to the middle of the two movable frames.

[0008] As a further preferred embodiment of this technical solution, the top corner of the positioning block is provided with a guide extrusion surface.

[0009] As a further preferred embodiment of this technical solution, the top of the placement rack is chamfered.

[0010] As a further preferred embodiment of this technical solution, a control button is fixedly installed on the top of one end of the base.

[0011] This utility model provides a positioning fixture for testing LED digital tubes, which has the following advantages:

[0012] (1) This utility model slides the LED digital tube onto the top outer side of one end of the placement frame, and attaches the bottom middle of the LED digital tube to the top surface of the placement frame. Then, the second motor is powered on by operating the control button. The output end of the second motor will drive the bidirectional screw to rotate. The two ends of the bidirectional screw are respectively connected to the threads in the middle of the two moving frames, which will drive the two moving frames to move closer to each other along the trajectory of the two limit rods. This will cause the power-on detection circuit board on the two moving frames to contact the pin wiring of the LED digital tube. When the moving frames are moved, the positioning block at the top of the moving frame will be on the upper surface of the LED digital tube, which can limit the position of the LED digital tube and prevent the LED digital tube from shifting when the power-on detection circuit board contacts the pin wiring of the LED digital tube.

[0013] (2) After the previous set of LED digital tubes has been tested, the present invention controls the two moving frames to move away from each other along the trajectory of the two limit rods. Then, the first motor drives the transmission wheel to rotate, and the transmission belt drives the two transmission wheels to rotate. The push rod on the transmission belt will squeeze one side of the LED digital tube, which will move the LED digital tube along the top trajectory of the placement frame. The tested LED digital tube is moved out of the test position, and then the next set of LED digital tubes is placed on the top surface of the placement frame. When the worker who is testing this set of LED digital tubes is idle, the previous set of LED digital tubes at the top of one end of the placement frame can be taken out of the placement frame, which improves the testing efficiency. Attached Figure Description

[0014] Figure 1This is one of the overall structural schematic diagrams of this utility model;

[0015] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a partial structural schematic diagram of the present invention;

[0017] In the diagram: 1. Base; 2. Placement rack; 3. Moving rack; 4. Power-on detection circuit board; 5. Positioning block; 6. Transmission belt; 7. Push rod; 8. Transmission wheel; 9. First motor; 10. Limiting rod; 11. Bidirectional screw; 12. Second motor; 13. Guide extrusion surface; 14. Chamfer; 15. Control button. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution: such as Figures 1 to 3As shown, in this embodiment, a positioning fixture for testing LED digital tubes includes a base 1. A placement rack 2 for placing LED digital tubes is fixedly installed in the middle of the base 1. The top of the placement rack 2 has a chamfer 14. The chamfer 14 design facilitates the smooth placement of the bottom center of the LED digital tube onto the top surface of the placement rack 2. Sliding frames 3 are symmetrically mounted on both ends of the base 1. A power-on detection circuit board 4 is fixedly installed inside the top of the sliding frame 3. A positioning block 5 is fixedly installed on the top of the sliding frame 3. A guide extrusion surface 13 is provided at the top and bottom corners. When the movable frame 3 is moved, the guide extrusion surface 13 on the positioning block 5 can extrude the top corner of the LED digital tube that is not placed horizontally, and can control the LED digital tube to rotate and reset to a horizontal state. A transmission belt 6 is installed on one side of the placement frame 2. Push rods 7 are fixedly installed at equal intervals on the outer surface of the transmission belt 6. The push rods 7 are made of rubber material that can be extruded and deformed and recover. The push rods 7 can push the LED digital tube to move along the top of the placement frame 2 and will deform under the extrusion of the placement frame 2. The top of one end of the base 1 A control button 15 is fixedly installed. The LED digital tube is slidably placed on the top outer side of one end of the placement rack 2, with the bottom middle of the LED digital tube attached to the top surface of the placement rack 2. Then, the power-on detection circuit board 4 on the two moving racks 3 is driven to contact the pin wiring of the LED digital tube. The quality of the LED digital tube is judged by observation. When the moving rack 3 is moved, the positioning block 5 on the top of the moving rack 3 will be on the upper surface of the LED digital tube, which can restrict the position of the LED digital tube and prevent the LED digital tube from shifting when the power-on detection circuit board 4 contacts the pin wiring of the LED digital tube. After the test is completed, the two moving racks 3 are controlled to move away from each other, and then the transmission belt 6 is driven to rotate. The push rod 7 on the transmission belt 6 will squeeze one side of the LED digital tube, which will drive the LED digital tube to move along the top trajectory of the placement rack 2. The tested LED digital tube is moved out of the test position, and then the next set of LED digital tubes is placed on the top surface of the placement rack 2. When the worker who tested this set of LED digital tubes is idle, the previous set of LED digital tubes on the top of one end of the placement rack 2 can be taken out of the placement rack 2, which improves the testing efficiency.

[0020] like Figures 1 to 3 As shown, transmission wheels 8 are rotatably mounted on one side of the top of both ends of the placement rack 2 via shaft pins. The transmission belt 6 is driven between the two transmission wheels 8. A first motor 9 is fixedly mounted on one end of the base 1 corresponding to the position of one of the transmission wheels 8. The output end of the first motor 9 is fixedly connected to one of the transmission wheels 8.

[0021] The first motor 9 drives the transmission wheel 8 to rotate. The transmission belt 6 drives the two transmission wheels 8 to rotate. The push rod 7 on the transmission belt 6 will squeeze one side of the LED digital tube, which will move the LED digital tube along the top track of the placement rack 2 and move the tested LED digital tube out of the test position.

[0022] like Figures 1 to 3 As shown, limit rods 10 are symmetrically fixedly installed inside the top of the base 1. The movable frame 3 is slidably installed between the two limit rods 10. A bidirectional screw 11 is rotatably installed in the middle of the base 1 through a bearing. A second motor 12 is fixedly installed inside one end of the base 1 at the position corresponding to the bidirectional screw 11. The output end of the second motor 12 is fixedly connected to one end of the bidirectional screw 11 through a shaft connector. The two ends of the bidirectional screw 11 are respectively threaded to the middle of the two movable frames 3.

[0023] By controlling the second motor 12 to drive the bidirectional screw 11 to rotate, and through the threaded connection between the two ends of the bidirectional screw 11 and the middle of the two movable frames 3, the two movable frames 3 will be driven to move closer or closer to each other along the trajectory of the two limit rods 10.

[0024] This utility model provides a positioning fixture for testing LED digital tubes, and its working principle is as follows:

[0025] In use, the LED digital tube is slidably placed on the outer top of one end of the placement rack 2, with the bottom center of the LED digital tube attached to the top surface of the placement rack 2. Then, the second motor 12 is powered on by operating the control button 15. The output of the second motor 12 drives the bidirectional screw 11 to rotate. The two ends of the bidirectional screw 11 are threadedly connected to the middle of the two moving racks 3, causing the two moving racks 3 to move closer to each other along the trajectory of the two limit rods 10. This causes the power-on detection circuit board 4 on the two moving racks 3 to contact the pin wiring of the LED digital tube. The condition of the LED digital tube is determined by observation. When the moving racks 3 are moved, the positioning block 5 at the top of the moving rack 3 will be positioned on the upper surface of the LED digital tube, thus restricting the position of the LED digital tube and preventing it from moving. When the power-on detection circuit board 4 contacts the pins of the LED digital tube, it causes the LED digital tube to shift. After the test is completed, the two moving frames 3 are controlled to move away from each other along the trajectory of the two limit rods 10. Then, the first motor 9 drives the transmission wheel 8 to rotate. The transmission belt 6 drives the two transmission wheels 8 to rotate. The push rod 7 on the transmission belt 6 will squeeze one side of the LED digital tube, which will move the LED digital tube along the top trajectory of the placement frame 2. The tested LED digital tube is moved out of the test position. Then, the next set of LED digital tubes is placed on the top surface of the placement frame 2. When the worker who is testing this set of LED digital tubes is idle, the previous set of LED digital tubes at the top of one end of the placement frame 2 can be taken out of the placement frame 2, which improves the testing efficiency.

[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. A positioning fixture for testing LED digital tubes, comprising a base (1), wherein a placement rack (2) for placing LED digital tubes is fixedly installed in the middle of the base (1), characterized in that: The base (1) has a movable frame (3) symmetrically slidably mounted at both ends. The movable frame (3) has a power-on detection circuit board (4) fixedly mounted inside the top of the movable frame (3). The movable frame (3) has a positioning block (5) fixedly mounted on the top. The placement frame (2) has a transmission belt (6) installed on one side. The outer surface of the transmission belt (6) has push rods (7) fixedly mounted at equal intervals. The push rods (7) are made of rubber material that can be squeezed and deformed and recover.

2. The positioning fixture for testing LED digital tubes according to claim 1, characterized in that: The top side of both ends of the placement rack (2) is rotatably mounted with a drive wheel (8) via a shaft pin. The drive belt (6) is driven between the two drive wheels (8). A first motor (9) is fixedly mounted at one end of the base (1) corresponding to the position of one of the drive wheels (8). The output end of the first motor (9) is fixedly connected to one of the drive wheels (8).

3. The positioning fixture for testing LED digital tubes according to claim 2, characterized in that: The base (1) has symmetrically fixed limit rods (10) inside its top end. The movable frame (3) is slidably installed between the two limit rods (10). A bidirectional screw (11) is rotatably installed in the middle of the base (1) through a bearing. A second motor (12) is fixedly installed inside one end of the base (1) at the position corresponding to the bidirectional screw (11). The output end of the second motor (12) is fixedly connected to one end of the bidirectional screw (11) through a shaft connector. The two ends of the bidirectional screw (11) are threadedly connected to the middle of the two movable frames (3) respectively.

4. The positioning fixture for testing LED digital tubes according to claim 1, characterized in that: The top corner of the positioning block (5) is provided with a guide extrusion surface (13).

5. The positioning fixture for testing LED digital tubes according to claim 1, characterized in that: The top of the placement rack (2) is chamfered (14).

6. The positioning fixture for testing LED digital tubes according to claim 3, characterized in that: A control button (15) is fixedly installed on the top of one end of the base (1).

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