Electrocoating fixture

Abstract

An electrocoating fixture comprises two plugs, a clamp spring and a hanging tool, wherein the clamp spring is fixed on the hanging tool; a hole is punched in the plug and a metal rod passes through the hole; an elastic conductive part is fixed at the inner end of the metal rod; the elastic conductive part is clamped on the inner wall of a workpiece which is plugged by the plug; and the whole workpiece is clamped when the metal rod on the plug is clamped by the clamp spring. The electrocoating fixture can ensure electron exchange between the electrocoating and the coated surface so as to deposit the electrocoating on the surface of the workpiece. The hanging point is hung on an inner hole through the elastic conductive part on the plug, so that the hanging point is effectively prevented on the coating surface of the workpiece, the coating surface has no hanging point after the workpiece is dried and hung, the uniformity and consistency of the workpiece coating are improved, and the corrosion resistance of the whole workpiece is improved.

Description

technical field [0001] The invention relates to a workpiece fixture with an electrophoretic coating inner hole without plating. Background technique [0002] At present, the corrosion resistance and insulation of most motor components are achieved by electrophoretic coating on their surfaces. In the electrophoretic process, after electrophoresis to form a coating with a predetermined thickness on the surface of the workpiece, it is then baked in a baking furnace. Fixtures used for clamping see figure 1 , it blocks two ends of the workpiece 2 with a plug 1, and then the workpiece 2 is mounted on the hanger 3 by the jump spring 4. Because the clip spring 4 is clamped on the two end faces of the workpiece 2, there will be hanging points on the end surface coating of the workpiece after electrophoresis drying, and there is no electrophoretic coating at the hanging points, so it is necessary to use the method of spotting to paint the hanging points. paint. Although this e...

AI Technical Summary

Problems solved by technology

[0003] 1. Because the plug 1 is plugged at both ends of the workpiece 2, it partially blocks the effective mounting space on both ends, making mounting and hanging very inconvenient

[0004] 2. During the drying process of the electrophoretic coating, the thermal expansion coefficients of the plug 1 and the workpiece 2 are inconsistent, which may lead to the risk of cracks or cracks in the product during the drying process

[0005] 3. During the drying process of the electrophoretic coating, a small gap defect is formed at the hanging point due to the inconsistent thermal expansion of the workpiece and the hanger

[0006] 4. After the product is hung, there is no electrophoretic coating on the hanging point of the product. If the customer has special requirements, the hanging point must be coated with paint by spotting paint, which will result in poor consistency of the product coating and a certain degree of overall anti-corrosion performance. Impact

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