Automobile bumper color registration and spraying process

Abstract

The invention relates to an automobile tinting and spraying technology, in particular to an automobile bumper bar tinting and spraying technology. The automobile bumper bar tinting and spraying technology comprises the steps of A, selecting attaching materials, wherein 3M4737 adhesive tape and a thin film are selected as raw attaching materials; B conducting attaching, wherein the adhesive tape is flatly attached to a color separation groove to be compressed, the thin film is attached to the adhesive tape, the thin film covers the whole shielding area, then the periphery of the thin film is reversely packaged to be attached to the inner side of a bumper bar, and finally the positions of hubs on the two sides along the color separation groove are each provided with a layer of 3M4737 adhesive tape in an attached mode; C, conducting spraying, wherein the bumper bar is placed on a production line to be sprayed with priming paint, finishing paint and varnish; D, conducting baking, the bumper bar is fed into a baking oven to be baked; E, removing the adhesive tape and the thin film, wherein after the bumper bar is taken off the production line, the thin film and the adhesive tape are removed slowly layer by layer in sequence. According to the automobile bumper bar tinting and spraying technology, the tinting edge is smooth, the phenomena of sawteeth, paint leakage, paint accumulation and rough selvedge are greatly reduced, the product quality is greatly improved, operation is convenient, paint slag pollution is reduced, and the spraying quality and the qualified product rate are improved.

Description

technical field [0001] The invention relates to an automobile color registration and spraying process, in particular to an automobile bumper color registration and spraying process. Background technique [0002] The main purpose of bumper color registration is to separate the painted part from the unpainted part to achieve a distinct color effect. The edge of the color boundary is required to be smooth and smooth, especially the arc part is particularly strict, and defects such as jaggedness, paint cracking, and paint accumulation in the color separation groove are not allowed. At present, some auto parts companies use spraying after coloring for bumper coloring. After leveling for 10 minutes, all the coloring tape, masking paper, film, etc. are peeled off before baking. Bar registration spraying method". The disadvantages caused by this method are: 1. Sawtooth: Since the paint film is not fully cured, there is a shear force when the tape is removed, and the paint film ris...

AI Technical Summary

Problems solved by technology

The disadvantages caused by this method are: 1. Sawtooth: Since the paint film is not fully cured, there is a shear force when the tape is uncovered, and the paint film rises upward with the tape, resulting in a jagged edge with uneven edges.

2. Paint accumulation in the color separation tank: due to improper selection of the adhesive tape or improper attachment, when spraying, the paint seeps through the tape to the color separation tank, resulting in paint over boundary and paint accumulation

3. The glue is torn during the production process, and the operation is inconvenient: for some semi-automatic spraying lines, the product is constantly operating on the conveying track, and it is undoubtedly very difficult to uncover the color tape and film during the movement, which is easy to cause scratches on the product , Paint bounce and other bad phenomena

4. Paint slag pollution: During the production process, the paint mist is scattered on the film and becomes solid particles and dust after drying. When the film is uncovered, these particles and dust will be scattered in the production line, which is difficult to clean. Over time, the environmental particle index of the production line rises, which pollutes the production environment and reduces the quality of spraying

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