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This invention relates to the field of laser cutting technology and discloses a laser cutting device for copper plates used in copper crafts processing. The device includes a laser cutting machine housing and a laser cutting head. Y-axis linear motors are mounted on both sides of the top of the laser cutting machine housing, and a portal frame is positioned between the Y-axis linear motors. An X-axis linear motor is fixed to one side of the top beam of the portal frame. The laser cutting head is fixed to one end of the slide. A fixing ring is fixed to the lower half of the outer wall of the laser cutting head, and an external gear ring is fixed to the outside of the fixing ring. This invention achieves a 360° adjustable preheating and rapid cooling mechanism around the laser cutting head, allowing it to follow the cutting direction of the laser cutting head in real time. This ensures that the electric heating plate always precisely covers the area to be cut, and the hollow water-cooled housing always precisely covers the cutting area, achieving seamless integration of preheating, cutting, and rapid cooling. This maximizes the effects of preheating and rapid cooling, further improving cutting accuracy and cut quality.