A device for preventing damage to core packs in the automatic assembly machine of aluminum electrolytic capacitors

Abstract

The invention discloses a core ladle injury preventing device for a full-automatic assembly machine of an aluminum electrolytic capacitor. The core ladle injury preventing device comprises a rack bedplate, core ladle pressing molds, a positioning and injury-preventing assembly of a capacitor and a rotatable chuck, wherein the positioning and injury-preventing assembly is arranged on the rack bedplate; the core ladle pressing molds are oppositely arranged above the positioning and injury-preventing assembly and form assembly spaces for the capacitor; the chuck clamps the core ladle sleeved with a rubber stopper to sequentially pass through the assembly spaces; and the core ladle pressing molds and the positioning and injury-preventing assembly apply downward force to the core ladle, so that a lead aluminum stick on the core ladle penetrates into a preformed hole in the rubber stopper. According to the core ladle injury preventing device disclosed by the invention, the wrinkling phenomenon of an electrode foil and the bursting phenomenon caused by a core ladle injury can be effectively prevented.

Description

technical field [0001] The invention relates to a fully automatic assembling machine for aluminum electrolytic capacitors, in particular to a device for preventing damage to core packs of the fully automatic assembling machine for aluminum electrolytic capacitors. Background technique [0002] In the production of aluminum electrolytic capacitors in the existing automatic assembly machine, when the aluminum stem of the lead wire enters the rubber plug hole, because the support of the lead wire cannot keep the core package vertical, the core package is tilted, resulting in the assembly of the core package. During the process of pressing down the core package, the gap between the core package tilt and the rubber plug surface is uneven, which in turn causes the core package to tilt and scratch on the inside of the aluminum shell during the process of inserting the core package into the aluminum shell, resulting in electrolytic paper. Damaged, the positive and negative aluminum ...

AI Technical Summary

Problems solved by technology

[0002] In the production of aluminum electrolytic capacitors in the existing automatic assembly machine, when the aluminum stem of the lead wire enters the rubber plug hole, because the support of the lead wire cannot keep the core package vertical, the core package is tilted, resulting in the assembly of the core package. During the process of pressing down the core package, the gap between the core package tilt and the rubber plug surface is uneven, which in turn causes the core package to tilt and scratch on the inside of the aluminum shell during the process of inserting the core package into the aluminum shell, resulting in electrolytic paper. Damaged, positive and negative aluminum foil contact

This kind of badness will lead to three bad consequences of the capacitor: 1. Explosion occurs during the aging process of the capacitor, and the aluminum shell is broken down.

2. There is no abnormality during the aging process, and the electrical performance parameters of the capacitor are qualified. However, during the use of the customer, due to the instantaneous voltage and current of the start-up, the scratch of the core package is slightly ignited and then imploded. Capacitor life is short, electrical parameters are unstable, affecting the entire operation of the circuit

3. The position of the aluminum stalk of the lead wire is not in place when it enters the rubber plug hole, so that the aluminum stalk is subjected to resistance from bottom to top, and the core package is subjected to the pressure from top to bottom of the lower die of the core package, resulting in the force transmission of the aluminum stalk to the aluminum tongue; however, the strength of the aluminum tongue is transmitted to the aluminum foil by the rivet, which makes the aluminum foil at the rivet wrinkle, the rivet contact is poor, and even the wrinkle seriously punctures the electrolytic paper and short-circuits

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