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1. 发明授权

US06090450A Method and apparatus for spray coating a workpiece 有权
标题翻译：用于喷涂工件的方法和装置
公开(公告)号：US06090450A
公开(公告)日：2000-07-18
申请号：US244928
申请日：1999-02-04
申请人： Ralf Kahmann , Udo Klein , Winfried Ott , Volker Weiss
发明人： Ralf Kahmann , Udo Klein , Winfried Ott , Volker Weiss
IPC分类号： B05D1/02 , B05B12/14
CPC分类号： B05B12/1481 , B05B12/14
摘要： An apparatus and method for painting a workpiece while switching paint colors between successive painting cycles includes a paint supply switching device, a paint feed line connected to the paint supply switching device, a separating element adapted to move back and forth in at least a portion of the paint feed line, first and second receiver stations adapted to receive the separating element at the end positions of its travel in the paint feed line, and a paint spray nozzle at a terminal end of the paint feed line. The separating element is actively held in the first receiver station while paint of a first color is supplied through the paint feed line and sprayed from the nozzle onto a workpiece. To switch to a paint of a second color, the supply of the first paint is terminated, the separating element is released from the first receiver station, and a pushing medium pushes the separating element through the paint feed line, while residual paint is pushed from the paint feed line out through the spray nozzle. The separating element forms a sealing barrier between the pushing medium and the residual paint. Sensors detect the arrival of the separating element in the second receiver station, and the flow of pushing medium is terminated to avoid spraying the pushing medium out through the spray nozzle. Then a pushing medium pushes the separating element back into the first receiver station.
摘要翻译：一种用于在连续涂漆循环之间切换涂料颜色时对工件进行涂漆的设备和方法包括涂料供应切换装置，连接到涂料供应切换装置的涂料供给管线，适于在至少一部分涂料供给管线，第一和第二接收站适于在其在涂料供给管线中的行程的端部位置处接收分离元件，以及在涂料供给管线的末端处的喷漆喷嘴。分离元件主动地保持在第一接收站中，而第一颜色的涂料通过涂料供给线供应并从喷嘴喷射到工件上。为了切换到第二种颜色的涂料，第一种涂料的供应被终止，分离元件从第一接收站释放，并且推动介质将分离元件推动通过涂料进料管线，同时将残留的涂料从油漆进料管线通过喷嘴喷出。分离元件在推动介质和残留涂料之间形成密封屏障。传感器检测第二接收站中分离元件的到达，并且终止推动介质的流动，以避免通过喷嘴喷射推动介质。然后推动介质将分离元件推回第一接收站。

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