Staubsammelvorrichtung für ein Bearbeitungsgerät

摘要

A dust collecting device (10) for collecting cutting chips into a dust collecting container (20) is provided. A back-flow preventing wall(s) (12; 15a; 16a: 18) is fixedly disposed on a flow path member (11; 15; 16; 17) defining a flow path between a machining apparatus (1) and the dust collecting container (20). The back-flow preventing wall(s) (12; 15a; 16a: 18) is configured to decrease a cross sectional area of a flow path part defined by the flow path member (11; 15; 16; 17) in a downstream direction with respect to the flow of the air containing the cutting chips toward the dust collecting container (20).