Diode performance detection device

Abstract

The invention relates to the technical field of diode detection, in particular to a diode performance detection device which comprises a guide groove, the feeding end of the guide groove is inclined and connected with a feeding device, the bottom of the horizontal part of the guide groove is transparent, conveying lead screws in the same direction are arranged at the transparent position, and multiple sets of detection modules are arranged in the horizontal part of the guide groove. The detection module comprises an inductor and a detector, the inductor is arranged on the upper portion in the guide groove, the detector is arranged on one side of the inductor, the detector comprises a detection plate, the upper end of the detection plate is connected with the telescopic end of an air cylinder, and the middle of a cylinder body part of the air cylinder is installed on the support in a hinged mode through a hinge seat; the tail part of the cylinder body part of the air cylinder is hinged to the support through an electric telescopic rod, the free end of the detection plate obliquely downwards extends into the guide groove, two polar plates which are transversely distributed are arranged on the plate surface of the detection plate, and the two polar plates are connected with the detection circuit module through wires; the device can be used for electrical detection of diodes with uncertain head and tail orientations.

Description

Technical Field

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

[0002] As a commonly used electronic component, the diode is shown in the figure as a schematic diagram of the structure of the diode. The demand is large. In order to ensure the yield rate of the diode, the manufacturer of the diode needs to test the electrical performance of different types of diodes, that is, test the resistance of the diode. If the qualified rate of the sampled diodes is high, it is considered that the batch of diodes shipped out of the factory are all qualified products. If the qualified rate of the sampled diodes is low, it is considered that the batch of diodes is unqualified and needs to be re-tested with a detection device. At present, the steps for detecting the resistance of the diode are as follows: the quality inspector first places the resistance meter and the diode to be tested flat on the workbench, and then clamps one chuck of the resistance meter on one leg of the diode, and then clamps the other chuck on the other leg of the diode. After clamping, the quality inspector reads the resistance of the diode and determines whether the sampled diode is qualified. However, the legs of the diode are relatively slender. When the chuck is used, it is very easy to break the legs, resulting in inaccurate data detected by the resistance meter.

[0003] The current testing equipment is inefficient and difficult to implement automated testing, and is even more difficult to adapt to automated testing when diodes are difficult to feed in the same direction. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a diode performance detection device.

[0005] The technical solution of the present invention is:

[0006] 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, a plurality of detection modules are arranged in the horizontal part of the guide groove, the detection module comprises a sensor and a detector, the sensor is arranged above the guide groove, the detector is arranged on one side of the sensor, 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 part of the cylinder is installed on a support through a hinge seat, the tail of the cylinder body part of the cylinder is hingedly connected to the support through an electric telescopic rod, the free end of the detection plate extends obliquely downward into the guide groove, 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.

[0007] Furthermore, an inclined plate is provided at the discharge end of the guide groove, and the inclined plate transports the tested diodes to the next process.

[0008] Furthermore, the inner width of the guide groove is slightly larger than the diameter of the diode body.

[0009] Furthermore, the width of the detection plate is slightly smaller than the inner width of the guide groove.

[0010] Furthermore, the sensor is a proximity switch, and the proximity switch and the detection circuit module are both connected to the controller.

[0011] Furthermore, the end of the conveying screw is installed through the support structure and connected to the rotation drive device.

[0012] Furthermore, the electrode plate is embedded on the surface of the detection board.

[0013] The beneficial effects achieved by the present invention are:

[0014] When the present invention is used, the diode 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 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 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 positions 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 continues to be detected through the next detection module. The device can be used to perform electrical detection on diodes with uncertain head and tail directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part Ⅰ;

[0017] Figure 3 yes Figure 1 A local enlarged schematic diagram of the A direction;

[0018] Figure 4 This is a schematic diagram of the diode pins and plate contact coordination;

[0019] Figure 5 This is a schematic diagram of the state where the detection board is lifted to turn the diode around. DETAILED DESCRIPTION

[0020] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0022] 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 a 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 arranged 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 arranged 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 arranged in the horizontal part of the guide groove, and the detection module includes a sensor 4 and a detector, the sensor is arranged above the guide groove, the detector is arranged on one side of the sensor, and the detector includes a detection plate 5. The upper end of the detection plate 5 is connected to the telescopic end of the cylinder 6. The middle part of the cylinder body of the cylinder 6 is hingedly mounted on the bracket through a hinge 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 detection plate extends obliquely downward into the guide groove. Two laterally distributed pole plates 7 are embedded in the plate surface of the detection plate. The two pole plates 7 are connected to the detection circuit module through wires. When the two pins of the diode touch the two pole plates, the detection circuit module and the diode form a detection circuit to realize electrical detection of the diode. The two pole plates are respectively connected to the positive and negative poles of the power supply and the electrode properties can be replaced.

[0023] 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.

[0024] 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 pointed tip can be smoothly inserted into the lower side of the diode body.

[0025] The sensor is a proximity switch, and the proximity switch and the detection circuit module are both connected to the controller.

[0026] Working principle: When in use, the diode 9 enters the feed end of the guide groove from the feeding device. 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 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 turn around, and the turned diode will continue to be tested by the next detection module. Through this device, the diode with uncertain head and tail directions can be electrically tested.

[0027] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope 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 arranged at the transparent position, a plurality of detection modules are arranged in the horizontal part of the guide groove, the detection module includes a sensor and a detector, the sensor is arranged above the guide groove, the detector is arranged 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, 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.

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, and the inclined plate transports the tested diodes to the next process.

3. A 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. A 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. A 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. A diode performance detection device according to claim 1, characterized in that: The end of the conveying screw 2 is mounted through a supporting structure and connected to a rotation drive device.

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

Images