A roll forming device for micro-casting and rolling additive manufacture for large special-shaped pipes, comprises a supporting assembly, a sliding assembly, and a roller system assembly, and wherein,
- said supporting assembly includes a first vertical wall, a frame plate, a second vertical wall and hexagonal head bolts, the first vertical wall and the second vertical wall are both T-shaped, and the middle portion of the frame plate has a hollow structure, a first end of the first vertical wall and a first end of the second vertical wall are respectively flatly provided on the ground, and a first end and a second end of the bottom of the frame plate are respectively fixedly connected with a second end of the first vertical wall and a second end of the second vertical wall through hexagonal head bolts, two side surfaces of the frame is plate are respectively flush with a first side surface of the first vertical wall and a first side surface of the second vertical wall in a length direction, and said two side surfaces of the frame plate are respectively flush with a second side surface of the first vertical wall and a second side surface of the second vertical wall in a width direction;
- said sliding assembly includes a guide rail, a first hydraulic cylinder, a second hydraulic cylinder, a first hydraulic pushing rod, a second hydraulic pushing rod, cylindrical pins, and a guide rail sliding frame, two ends of said guide rail are respectively fixedly connected to centers of two ends of said frame plate in the width direction, a middle portion of the guide rail sliding frame has a hollow structure which is able to slide on the guide rail, a lower surface of the sliding plate of the guide rail sliding frame is slidably connected with the guide rail, and a housing of the first hydraulic cylinder and a housing of the second hydraulic cylinder are respectively fixedly connected to the centers at both ends of the frame plate in the width direction, and the housing of the first hydraulic cylinder and the housing of the second hydraulic cylinder are respectively located in the middle portions of the two ends of the guide rail, a first end of the first hydraulic pushing rod and a first end of the second hydraulic pushing rod are slidably connected to the first hydraulic cylinder and the second hydraulic cylinder, respectively, and a second end of the first hydraulic pushing rod and a second end of the second is hydraulic pushing rod are respectively fixedly connected with a first pair of earrings the guide rail sliding frame and a second pair of earrings of the guide rail sliding frame through a cylindrical pin;
- and
- said roller system assembly includes a roller cover, a first roller, a second roller, a first bearing, a second bearing, a third bearing, a fourth bearing, a first bearing end cap, a second bearing end cap, and a third bearing end cap, a fourth bearing end cap, a first steering hinge rod, a second steering hinge rod, and hexagonal head bolts, both the outer shape of the first roller and the outer shape of the second roller are stepped shafts, and the shaft sections at both ends of the first roller respectively pass through the inner diameter of the first bearing and the inner diameter of the second bearing and are connected with the inner diameter of the first bearing end cap and the inner diameter of the second bearing end cap, and the shaft sections at both ends of the second roller respectively pass through the inner diameter of the third bearing and the inner diameter of the fourth bearing and are connected with the inner diameter of the third bearing end cap and the inner diameter of the fourth bearing end cap, a roller surface of the first roller is tangent with a roller surface of the second roller, a head of the first steering hinge rod and a head of the second steering hinge rod both have a mushroom-shape, and both a tail of the first steering hinge rod and the tail of second steering hinge rod are welded with earrings provided with through holes, the head of the first is steering hinge rod is connected with a first sliding groove of the guide rail sliding frame, and the head of the second steering hinge rod is connected with a second sliding groove of the guide rail sliding frame.