Electro-dipcoating apparatus

US7862701B2 · kind B2 · utility

Assignee

• Eisenmann Anlagenbau GmbH & Co. KG · DE

Inventors

• Thomas Noller · Stuttgart, DE
• Markus Hoffmann · Bad Liebenzell, DE
• Wolfgang Mauk · Stuttgart, DE
• Andreas Hablizel · Reutlingen, DE

Key dates

• Filing date: Jul 31, 2006
• Grant date: Jan 4, 2011
• Expiry date: Nov 4, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D13/22
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An electro-dipcoating apparatus is described in which, in conventional manner, a work-piece to be lacquered is dipped into a lacquer bath, moved through the latter, and lifted out again in a continuous process. Along the path of motion of the work-piece in the lacquer bath there are arranged electrodes which are connected to a first pole of at least one voltage source. Several contact rails extend parallel to one another without electrical interruption along the entire path of motion of the work-piece leading through the lacquer bath and are each connected to the second pole of varying voltage sources. To each work-piece a contact device is assigned which can be brought into communication with a respective one of the several contact rails and in this way applies the potential of the second pole of the corresponding voltage source to the work-piece. In this way, cuts in the contact rails are avoided that would result in wear of the contact devices and in increased control effort.