Drainage system for electroplating cylinder of centrifugal electroplating machine

Abstract

The invention discloses a drainage system for an electroplating cylinder of a centrifugal electroplating machine. The drainage system comprises a cylinder body, wherein drainage holes are formed in a bottom plate of the cylinder body, and are provided with filter screens, a bottom plate is fixedly installed on the upper end face of a flange, a transmission shaft is connected to the center of the lower end face of the flange, and is driven by a driving component to rotate, a buffer water storage tank is arranged on the upper end face of the flange, the drainage holes lead to the buffer water storage tank, the interior of the transmission shaft is hollow to form a drainage channel, the upper end of the drainage channel communicates with the buffer water storage tank, the lower end of the drainage channel is connected with a drainage pipe through a rotary joint, and a negative pressure pump is arranged on the drainage pipe. The drainage system can promote circulating flow of liquid medicine, and has the advantages of high drainage speed, free of residue in drainage and the like.

Description

technical field [0001] The invention mainly relates to the field of centrifugal electroplating machines, in particular to a drainage system for electroplating cylinders of centrifugal electroplating machines. Background technique [0002] In the field of electroplating equipment for microelectronic components, the centrifugal electroplating machine mainly includes an anode device and an electroplating cylinder. The electroplating cylinder mainly includes a cylinder driven by a motor to rotate. The anode device is connected to the current anode, and the cathode of the cylinder is connected to the current cathode. When working, add electroplating solution with metal ions to the cylinder, insert the anode device into the electroplating solution to continuously replenish the plating metal ions to the electroplating solution, and use the centrifugal force generated by the rotation of the cylinder to throw the micro electronic components in the cylinder to The inner wall of the ca...

AI Technical Summary

Problems solved by technology

For electroplated products with such a small size as microelectronic components, the mesh of the filter must be set very small, but too small mesh will lead to difficult drainage, slow drainage, and can not be completely drained.

When the potion needs to be drained after electroplating, because the potion cannot be drained, a large amount of water can only be used to dilute the residual potion when cleaning the cylinder body, resulting in a long cleaning time, and it cannot be completely cleaned. An electroplating process caused cross-infection of the potion

Furthermore, since the undrained liquid medicine cannot be returned to the liquid medicine circulation system, it also causes a certain degree of waste of liquid medicine.

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