A Polarity Recognition Method During Bending and Forming of Two-legged Two-color Diode

Abstract

The invention relates to a polarity identifying method for a double-pin double-color diode during bending molding. The method comprises the following steps that the type of a material is identified, whether the material belongs to the double-pin double-color diode or not is determined, and the length of a long pin and a short pin needs to be 2.5 MM or above; a tester is prepared, a test fixture arranged on the tester is provided with probe holes, and probes are connected to a PLC; the pins of the diode are inserted into the test fixture, the probes connected with the PLC stretch into the probe holes to make contact with the pins appearing in the corresponding probe holes, one of the probes corresponds to the vacant position of the short pin and does not touch the short pin, and the probes feed different signals back to the PLC according to the fact whether the probes make contact with the pins of the diode; the PLC judges the positions of the long pin and the short pin according to the signals fed back by the probes, it is assumed that the long pin is located at the left side, the probe at the left side can stretch into the probe holes to be conductive with the long pin, and then a signal is generated in X1 of the PLC. The method has the advantages that the polarity identifying accuracy rate is extremely high, and the condition that defective products are generated due to the fact that a molding machine cannot identify the polarity is avoided.

Description

technical field [0001] The invention relates to a bending forming process of a two-legged two-color diode, in particular to a polarity identification method during bending and forming of a two-legged two-color diode. Background technique [0002] At present, more and more double-pin two-color diodes are used in the field of electronic product manufacturing, and there are more and more similar colors. When similar red-orange two-color double-pin diodes are used for mechanical bending and forming, it is often found that ordinary LED molding machines The tester cannot be tested. Many factories adopt manual bending and forming because they cannot be formed. Misjudgments and human errors in bending will lead to the opposite direction of bending. After installation at the plug-in station, the color will be reversed, and defective products will flow out. It will cause the occurrence of batch rework events, and there will be great hidden dangers in quality and waste of efficiency. ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for identifying the polarity of two-legged two-color diodes during bending and forming, so as to solve the problem in the prior art that the polarity of the pins cannot be accurately and quickly identified during bending and forming of two-legged two-color diodes

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