METAL PLATE HAVING MESH-TYPE BEAD FOR DUCT AND APPARATUS OF PRODUCING THE SAME

摘要

The present invention relates to a metal having mesh-type bead for duct and apparatus of producing the same, in which mesh-type grooves are formed in the surface of the metal plate in a regular uneven-shaped grid pattern so that the duct is increased in outer appearance and stiffness. An apparatus for producing the metal plate for duct of the invention comprises a base frame constituted by a rectangular base plate for settling a driving motor as a driving unit, four posts respectively erected on four corners of the base plate and an upper plate connected to the upper ends of the posts as an upper part of the base frame; a pair of roll stands erected on both ends of the upper plate of the base frame; a pair of upper and lower pinch rolls inserted into roll chokes assembled to choke-assembling recesses at the both roll stands; a pair of working rolls assembled to the both roll stands in the same manner parallel with the pinch rolls and having groove-shaped embossments and intaglios in the surface for forming grooves; a power transmission unit for transmitting power from the driving motor to the pinch rolls and the working rolls.