Filtering net machining device

The utility model relates to a machining device of an air-conditioner filtering net, and discloses a filtering net machining device which comprises a feeding device, a hot cutting device and a net ejecting device, wherein the feeding device is used for pushing a filtering net to move along a fixed plane till a preset position; the hot cutting device is used for annularly cutting the filtering net in the preset position so as to obtain net pieces; the net ejecting device is used for ejecting the cut net pieces towards one side of the fixed plane; the hot cutting device further comprises a hot cutter which is arranged around the net ejecting device; the hot cutter surrounds the net ejecting device so as to form a channel through which the net ejecting device passes; the hot cutting device is arranged on one side of the fixed plane; the hot cutting device further comprises a speed reduction device for reducing the speed of the hot cutter at the tail end of the cutting stroke; the speed reduction device is arranged on one side where the hot cutting device faces to the fixed plane; the net ejecting device comprises a net piece ejecting off plate for ejecting off the filtering net. The machining device has the advantages of simple and concise structure, precise and accurate positioning and long service life.