Charging device of capacitor testing machine

Abstract

The invention discloses a charging device of a capacitor testing machine. The charging device can continuously charge capacitors. The device comprises a machine bench (1). An annular stepping transmission apparatus of capacitors (9) is arranged on the machine bench (1). A separating plate (6) positioned between pins of the capacitors (9), and an anode conducting plate (5) and a cathode conducting plate (8) arranged on two sides of the separating plate (6) are respectively arranged on the machine bench (1). The charging device is characterized in that elastic conducting parts used for pressing the capacitor (9) pins onto the separating plate (6) are respectively arranged on the anode conducting plate (5) and the cathode conducting plate (8). Each elastic conducting part simultaneously contacts the pins of two adjacent capacitors (9), and electric conduction is realized. During a capacitor (9) movement procedure, two pins of a capacitor (9) are respectively and continuously connected with the anode conducting plate (5) and the cathode conducting plate (8), such that the capacitor is continuously charged. The device provided by the invention is advantaged in simple structure. With the device, the charging time is shortened, measuring accuracy is endured, testing efficiency is improved, the charging device mechanical structure is greatly simplified, and equipment service life is prolonged.

Description

technical field [0001] The invention relates to a capacitor testing device, in particular to a charging device for a capacitor testing machine. Background technique [0002] In the production process of aluminum electrolytic capacitors, there is an important step, that is, to test aluminum electrolytic capacitors. During the test, the capacitor must be charged with a certain voltage (charging is mainly to test the leakage current index). At present, the traditional charging method of the capacitor testing machine is interval charging, that is, when the capacitor is in motion, it is not charged, and when the capacitor is not in motion, it is charged. In this way, in order to make the product with a large capacitance reach the voltage required by the test, it needs enough time to charge, otherwise the charging time is not enough, and the tested product parameters will be inaccurate. If the charging time is increased by reducing the test speed or increasing the length of the t...

AI Technical Summary

Problems solved by technology

In this way, in order to make the product with a large capacitance reach the voltage required by the test, it needs enough time to charge, otherwise the charging time is not enough, and the product parameters tested will be inaccurate

If the charging time is increased by reducing the test speed or increasing the length of the test machine, the test efficiency is reduced or the production cost is increased

In addition, it is necessary to use a cam linkage mechanism to realize the clamping and separation of the capacitor pins, which increases the mechanical load and mechanical noise during operation.

At the same time, since the number of aluminum electrolytic capacitors is transported by the annular stepping conveying device in each step, only one capacitor product can be tested during detection, and the test time for each capacitor product is about 0.4 seconds to 0.5 seconds , while the existing tester takes about 0.157 seconds to detect each capacitor product

Therefore, the efficiency of the existing circular stepping conveying device is not high, which greatly wastes the resources of the detector itself.

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