A diode performance detection device

Abstract

The present invention relates to the field of diode detection technology, and specifically to a diode performance detection device, comprising a guide groove, wherein the feed end of the guide groove is inclined and connected to a feeding device, the bottom of the horizontal part of the guide groove is transparent, and a conveying screw rod in the same direction is arranged at the transparent position, and multiple groups of detection modules are arranged in the horizontal part of the guide groove, and the detection module includes a sensor and a detector, the sensor is arranged above the guide groove, and the detector is arranged on one side of the sensor, and the detector includes a detection plate, the upper end of the detection plate is connected to the telescopic end of the cylinder, the middle part of the cylinder body of the cylinder is installed on the bracket through a hinge seat, the tail of the cylinder body of the cylinder is hingedly connected to the bracket through an electric telescopic rod, the free end of the detection plate extends obliquely downward into the guide groove, and two laterally distributed pole plates are arranged on the plate surface of the detection plate, and the two pole plates are connected to the detection circuit module through wires; through this device, diodes with uncertain head and tail directions can be electrically detected.

Description

Technical Field

[0001] The present invention relates to the technical field of diode detection, and in particular to a diode performance detection device. Background Art

[0002] Diodes are commonly used electronic components. The figure shows a schematic diagram of their structure. Demand is high for diodes. To ensure a high yield, diode manufacturers must perform electrical performance testing on different diode models. This testing involves testing the resistance of the diodes. If the sampled diodes have a high pass rate, the batch of diodes is considered qualified. If the sampled diodes have a low pass rate, the batch is considered unqualified and requires retesting using a testing device. Currently, testing diode resistance involves placing an ohmmeter and the diode to be tested flat on a workbench. The inspector then clamps one chuck of the ohmmeter onto one leg of the diode and the other chuck onto the other leg. After clamping, the inspector reads the diode's resistance and determines whether the sampled diode is qualified. However, the diode's legs are relatively slender, making them easily broken when clamped with a chuck, resulting in inaccurate data from the ohmmeter. Current testing equipment is inefficient, making automated testing difficult, and even more challenging to adapt to the challenges of feeding diodes in the same direction. Summary of the Invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a diode performance detection device.

[0004] The technical solution of the present invention is:

[0005] The present invention provides a diode performance detection device, comprising a guide groove, wherein the feed end of the guide groove is inclined and connected to a feeding device, the bottom of the horizontal part of the guide groove is transparent, and a conveying screw rod in the same direction is arranged at the transparent position, and multiple groups of detection modules are arranged in the horizontal part of the guide groove, and the detection module comprises a sensor and a detector, the sensor is arranged above the guide groove, and the detector is arranged on one side of the sensor, and the detector comprises a detection plate, the upper end of the detection plate is connected to the telescopic end of the cylinder, the middle part of the cylinder body of the cylinder is installed on the bracket through a hinge seat, the tail of the cylinder body of the cylinder is hingedly connected to the bracket through an electric telescopic rod, the free end of the detection plate extends obliquely downward into the guide groove, and two laterally distributed pole plates are arranged on the plate surface of the detection plate, and the two pole plates are connected to the detection circuit module through wires.

[0006] Furthermore, an inclined plate is provided at the discharge end of the guide trough, and the inclined plate transports the tested diodes to the next process.

[0007] Furthermore, the inner width of the guide groove is slightly larger than the diameter of the diode body.

[0008] Furthermore, the width of the detection plate is slightly smaller than the inner width of the guide groove.

[0009] Furthermore, the sensor is a proximity switch, and the proximity switch and the detection circuit module are both connected to the controller.

[0010] Furthermore, the end of the conveying screw is installed through the support structure and connected to the rotation drive device.

[0011] Furthermore, the electrode plate is embedded on the surface of the detection board.

[0012] The beneficial effects achieved by the present invention are as follows: when the present invention is used, the diode enters the feed end of the guide groove from the feeding device, and when the diode enters the horizontal part, it falls to the upper part of the conveying screw. As the conveying screw rotates, the diode can be driven to move forward at a uniform speed. When the diode moves to the lower side of the sensor, the sensor senses the position of the diode. When the diode continues to move to the corresponding detector position, if the pins of the diode are facing forward, the pins touch the detection plate. The conveying screw also has the function of driving the diode to rotate. The pins of the diode can automatically adjust their position to ensure contact with the two plates. When contact is made, electrical detection can be performed. After the detection is completed, the cylinder contracts and the diode continues to pass. If there is still no detection signal at this time, it proves that the body of the diode is facing forward. At this time, the electric telescopic rod contracts and drives the cylinder and the detection plate to rotate around the hinge seat. The free end of the detection plate lifts the body of the diode. Under the lifting action of the detection plate, the diode can turn around. The diode that has turned around passes through the next detection module to continue detection. Through this device, diodes with uncertain head and tail directions can be electrically detected. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part I;

[0015] Figure 3 yes Figure 1 A partial enlarged schematic diagram of the A direction;

[0016] Figure 4 This is a schematic diagram of the contact between the diode pins and the plate; Figure 5 This is a schematic diagram of the state where the detection board is lifted to turn the diode around. DETAILED DESCRIPTION

[0017] To facilitate those skilled in the art to understand the present invention, specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figures 1 to 5 As shown, the present invention provides a diode performance detection device, including a guide groove 1, the feed end of the guide groove 1 is inclined and connected to the feeding device, the bottom of the horizontal part of the guide groove 1 is transparent and a conveying screw 2 in the same direction is set at the transparent position, the end of the conveying screw 2 is installed through a supporting structure and connected to a rotating drive device, an inclined plate 3 is set at the discharge end of the guide groove 1, and the inclined plate conveys the tested diode to the next process, a plurality of detection modules are set in the horizontal part of the guide groove, and the detection module includes a sensor 4 and a detector, the sensor is set above the guide groove, and the detector is set on one side of the sensor, and the detector includes a detector Testing plate 5, the upper end of the testing plate 5 is connected to the telescopic end of the cylinder 6, the middle part of the cylinder body of the cylinder 6 is installed on the bracket through a hinged seat, the tail of the cylinder body of the cylinder 6 is hingedly connected to the bracket through an electric telescopic rod 8, the free end of the testing plate extends obliquely downward into the guide groove, and the plate surface of the testing plate is embedded with two laterally distributed plates 7, and the two plates 7 are connected to the detection circuit module through wires. When the two pins of the diode touch the two plates, the detection circuit module and the diode form a detection circuit to realize electrical detection of the diode. The two plates are respectively connected to the positive and negative poles of the power supply and the electrode properties can be replaced.

[0020] The inner width of the guide groove is slightly larger than the diameter of the diode body. With this design, the diode will not turn around by itself when moving forward in the guide groove.

[0021] The width of the detection plate is slightly smaller than the inner width of the guide groove. This design can ensure stable contact with the diode. The lower end of the detection plate is a pointed tip, which ensures that the tip can be smoothly inserted into the lower side of the diode body.

[0022] The sensor is a proximity switch, and the proximity switch and the detection circuit module are both connected to the controller.

[0023] Working principle: When in use, the diode 9 enters the feed end of the guide groove from the feeding device, and falls to the upper part of the conveying screw when the diode enters the horizontal part. As the conveying screw rotates, the diode can be driven to move forward at a constant speed. When the diode moves to the lower side of the sensor, the sensor senses the position of the diode. When the diode continues to move to the corresponding detector position, if the pins of the diode face forward, the pins touch the detection plate. The conveying screw also has the function of driving the diode to rotate. The pins of the diode can automatically adjust their position to ensure contact with the two plates. When contact is made, electrical detection can be performed. After the detection is completed, the cylinder contracts and the diode continues to pass. If there is still no detection signal at this time, it proves that the body of the diode is facing forward. At this time, the electric telescopic rod contracts and drives the cylinder and the detection plate to rotate around the hinge seat. The free end of the detection plate lifts the body of the diode. Under the lifting action of the detection plate, Figure 5 As shown, the diode can be turned around, and the turned diode will continue to be tested by the next detection module. This device can be used to perform electrical testing on diodes with uncertain head and tail directions. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A diode performance detection device, characterized in that: It includes a guide groove, the feed end of the guide groove is inclined and connected to the feeding device, the bottom of the horizontal part of the guide groove is transparent and a conveying screw rod in the same direction is set at the transparent position, and multiple groups of detection modules are set in the horizontal part of the guide groove. The detection module includes a sensor and a detector. The sensor is set above the guide groove, and the detector is set on one side of the sensor. The detector includes a detection plate, the upper end of the detection plate is connected to the telescopic end of the cylinder, the middle part of the cylinder body of the cylinder is installed on the bracket through a hinge seat, the tail of the cylinder body of the cylinder is hingedly connected to the bracket through an electric telescopic rod, the free end of the detection plate extends obliquely downward into the guide groove, and two laterally distributed plates are set on the plate surface of the detection plate, and the two plates are connected to the detection circuit module through wires.

2. A diode performance detection device according to claim 1, characterized in that: An inclined plate is provided at the discharge end of the guide trough, which transports the tested diodes to the next process.

3. The diode performance detection device according to claim 1, characterized in that: The inner width of the guide groove is slightly larger than the diameter of the body of the diode.

4. The diode performance detection device according to claim 1, characterized in that: The width of the detection plate is slightly smaller than the inner width of the guide groove.

5. The diode performance detection device according to claim 1, characterized in that: The sensor is a proximity switch, and the proximity switch and the detection circuit module are both connected to the controller.

6. The diode performance detection device according to claim 1, characterized in that: The end of the conveying screw is installed through the support structure and connected to the rotation drive device.

7. The diode performance detection device according to claim 1, characterized in that: The electrode plate is embedded on the surface of the detection board.

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