| 摘要 |
The present invention relates to a pipe embossing device with an improved structure which comprises: a cylinder unit (10) composed of a cylinder (11) operated by air pressure and a piston (16) moved up and down by the cylinder (11); an embossing projection unit (20) which is formed on the end of the piston (10), which moves separately from the piston and which forms concavo-embossed grooves (C) on the outer circumferential surface of a pipe (P) by striking the pipe (P); an air pressure supply unit (30) for supplying air pressure to the cylinder (10); an air pressure line unit for connecting the air pressure supply unit (30) with the cylinder; a control valve (50) for opening and closing the air pressure line unit (40); and a control unit (60) for controlling the control valve (50). [Reference numerals] (30) Air pressure supply unit;(60) Control unit |
