Color changing

Generally, coating systems which are currently in use for coating vehicle bodies or the like, are largely constituted by a working mechanism which is provided with a swinging arm, a coating machine which is mounted on a fore end portion of the arm, and a paint hose which supplies paint to the coating machine cheap oil paintings. The upstream end of the paint hose is connected to a color changing valve assembly which is arranged to supply a selected paint color from paint sources of different colors.

In the case of coating systems of this sort, however, it becomes necessary to supply solvent and thereby washing away paint residues from the paint hose abstract oil paintings, and to discharge spent solvent from the machine each time when changing the paint color. Therefore, each color change not only entails wasteful consumption of paint and solvent but also takes an objectionably long period of time.

In this regard, attempts have been made to mount oil paintings a color changing valve assembly on an arm of a working mechanism for the purpose of shortening the length of a paint hose between the color changing valve and a coating machine, as proposed in Japanese Patent Publication No. S62-20853. A coating system of this sort, however, has an inherent problem that the performance quality of a working mechanism is deteriorated to a considerable degree due to an increased weight which is put on the arm of the working mechanism and a large number of hoses which are connected to a color changing valve assembly to impede operations of the arm.

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Created on Dec 31st 1969 18:00. Viewed 0 times.

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