Novel continuous bar material chromium plating production line

Abstract

The invention discloses a novel continuous bar material chromium plating production line. The novel continuous bar material chromium plating production line comprises an automatic feeding device, an automatic blanking device, a rack as well as an initiative driving device and a passive driving device which are arranged on the rack, wherein the initiative driving device is composed of two roller ways arranged in parallel, each roller way is composed of a plurality of driving shafts provided with an initiative driving roller, the passive driving device is composed of passive driving rollers which are arranged above the roller ways at intervals along the direction of the roller ways, included angles are formed between the passive driving rollers and the initiative driving rollers in a vertical plane and gradually reduced along the conveying direction of a bar material, the roller ways in the automatic feeding device and the automatic blanking device are correspondingly connected to form a bar material conveying roller way; a first cathode device, an activation device, a chromium plating bath and a second cathode device are sequentially arranged along the conveying direction of the conveying roller way from left to right.

Description

technical field [0001] The invention belongs to the technical field of chrome plating, and in particular relates to a novel bar material continuous chrome plating production line. Background technique [0002] Electroplating is a surface processing technology. Due to the excellent performance of the chromium plating layer itself, the commonality between electroplating chromium and other plating types and its own unique characteristics, electroplating chromium occupies an extremely important position in the electroplating industry and is listed as one of the three One of the largest plating species. [0003] Existing chrome-plating equipment has various forms, and chrome-plated workpieces are ever-changing. Among them, the bar chrome plating production line is usually composed of a conveying device, a cleaning device, a cathode device, an activation device and an electroplating tank connected in sequence. The conveying device is used for the conveying and lifting adjustment...

AI Technical Summary

Problems solved by technology

[0004] (1) Since the bar is running on the conveying device, its centerline and the centerline of the anode device in the chrome plating tank are usually not on the same straight line, which leads to uneven current density distribution on the bar surface during the chrome plating process, resulting in chrome plating After the completion, the thickness of the coating varies from thick to thin and uneven, which seriously affects the quality of the coating of the bar; in addition, the bending of the bar during processing and transportation causes a certain degree of curvature of the bar itself, which further aggravates the mandrel. Surface coating quality defects;

[0005] (2) Due to the curvature of the bar itself, the material of the rollers of the conveying device, and the defects in the height adjustment of the rollers during the operation, the traction obtained by the bar when it passes through different rollers is different, resulting in end-to-end connection The connection part of the bar material is easy to loose during operation, resulting in an increase in the resistance of this part, which is prone to heat generation and poor conductivity when passing through the cathode device, thus affecting the quality of the coating on the surface of the workpiece

This can easily lead to other chrome plating defects caused by the weak connection of the connection parts, which not only affects the quality of the coating, but also greatly reduces the productivity of the equipment, and also increases the cost of chrome plating and the labor intensity of the staff.

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