| 摘要 |
PURPOSE: An automatic manufacturing device for a steel fiber is provided to automatically mold and cut a steel plate by a slitting roller, a molding roller and a cutting unit. CONSTITUTION: A device for automatically manufacturing a steel fiber consists of a slitting unit (100) shearing a steel plate (710) in the upper portion of a shelf (800); a straightening unit (200) straightening the sheared steel plate; a molding unit (400) molding many bent portions on the straightened steel plate; and a cutting unit (500) cutting the steel plate in a specific length. The slitting unit comprises an upper slitting roller unit (110) and a lower slitting roller unit (120). Plural slitting blades are fixed to one pivot shaft in the upper and the lower slitting roller unit. The slitting blades of the upper and the lower slitting roller unit are crossed each other to increase slitting and shearing effect. The straightening unit comprises an upper roller group (210) and a lower roller group (220) with plural straightening rollers (230). Thus, the steel plate becomes flat by the upper and the lower roller group repeatedly bending the steel plate. The molding unit consists of an upper and a lower molding roller (410,420) with many molding portions. Then, the molding unit forms many bent portions on the steel plate by the rotation of the upper and the lower molding roller. The cutting unit contains a shearing bite (510) and many shearing blades (520) on the circumference of a rotor (530). Then, the steel plate is cut by the shearing blades with the rotating force of the rotor to be a steel fiber (750). The length of the steel fiber is adjusted according to the number of shearing blades.
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