The utility model provides a flux-cored wire forming
machining device which comprises a
powder adding mechanism, the
powder adding mechanism is fixed between a U-shaped roller and a closed roller through a frame body, a U-shaped section of a
steel belt is arranged between the U-shaped roller and the closed roller, a dust removal
barrel is installed on the side, located on the U-shaped roller, of the frame body, the U-shaped section of the
steel belt penetrates through the dust removal
barrel, and the dust removal
barrel is connected with the U-shaped section of the
steel belt. A high-pressure spray head is fixed to the top wall in the dust removal cylinder in the opposite direction of the steel belt advancing path and faces the interior of the groove of the U-shaped section to conduct
airflow cleaning. According to the flux-cored wire forming
machining device,
compressed air is reversely blown into the groove of the U-shaped section through the high-pressure spray head fixed in the dust removal cylinder,
airflow cleaning is conducted on the interior of the groove of the U-shaped section along the steel belt, the situation that the lower end of
powder is covered with impurities through the powder adding mechanism is avoided, the interior of the groove of the U-shaped section is kept clean, and the quality of a flux core after the powder is injected is improved.