Cable guide device for industrial robot

A cable guide device for an industrial robot to prevent a plurality of cables and a cable tube enveloping the cables between an arm and a head of the industrial robot from being twisted or bent or damaged due to contact with an outer surface of the arm during operation of the robot, the device comprising:

• a tube ring coupled to an end portion of the cable tube of the industrial robot;
• a cable distributor insertedly coupled in the tube ring, the cable distributor having a plurality of cable inserting holes through which the cables introduced into the cable tube of the industrial robot pass;
• a tube clamp rotatably fitted around an outer peripheral surface of the tube ring, the tube clamp having a ring shape;
• a head coupling unit coupled to a portion of the tube clamp;
• and
• a clamp supporting unit having a first end portion fitted around the outer surface of the arm of the industrial robot and a second end portion coupled to the head coupling unit, the clamp supporting unit keeping the cable tube of the industrial robot at a predetermined distance away from the outer surface of the arm,
• wherein the head coupling unit includes:
• a rotating shaft including a plate part at a first end portion to be coupled to the tube clamp and a protruding part at a second end portion, the protruding part having a rotating groove formed around an outer peripheral surface thereof;
• a rotating bracket including a first surface formed with a shaft rotating recess to receive the protruding part of the rotating shaft and a second surface coupled to the clamp supporting unit, the shaft rotating recess having a rotating groove formed around an inner peripheral surface thereof;
• and
• a ball bearing provided between the rotating groove of the rotating shaft and the rotating groove of the shaft rotating recess, to enable the protruding part of the rotating shaft to be securely received in the shaft rotating recess of the rotating bracket and to smoothly rotate without separation.