Inline weld-bead cutting apparatus for spiral pipe

An inline weld-bead cutting apparatus for a spiral pipe for cutting a weld-bead protruding from a butt-jointed portion from the spiral pipe, comprising:

• a main frame through which a pipe transfer line passes;
• an up down movement plate provided in the main frame to be movable up and down;
• a main up down driving part driving the up down movement plate up and down;
• a forward-backward movement plate provided in the up down movement plate to be movable forward and backward;
• a forward-backward driving part driving the forward-backward movement plate forward and backward;
• and
• a cutting part provided in the forward-backward movement plate, and cutting the weld-bead protruding on an outer surface of the spiral pipe transferred from the pipe transfer line,
• wherein the cutting part includes:
• a mounting plate provided on the forward-backward movement plate to be movable up and down,
• a rotation motor provided on the mounting plate,
• a spindle provided on the mounting plate to be rotatable through a bearing, and receiving a rotational force of the rotation motor and having an up down-direction shaft,
• a cutting tool mounted on a terminal end of the spindle, the cutting tool including an insert for cutting the weld-bead, and
• a roundness interlocking part moving the cutting tool up and down by interlocking with a change in out of roundness of the spiral pipe,
• wherein the roundness interlocking part includes:
• a cutting side up down driving part moving the mounting plate up and down,
• a touch sensor provided on the bearing, and sensing a height of the outer surface of the spiral pipe by being in contact with the outer surface of the spiral pipe, and
• a roundness interlocking control part controlling the cutting side up down driving part so that the cutting tool is placed at the height of the outer surface of the spiral pipe by receiving a value of the touch sensor.