MANUFACTURING APPARATUS AND METHOD OF SPIRAL DUCT INCLUDING ELBOW

Malaysia

PATENT NO 159453
SERIAL NO

PI2010005482

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Abstract

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PROVIDED IS A MANUFACTURING METHOD OF A SPIRAL DUCT INCLUDING AN ELBOW. THE MANUFACTURING METHOD INCLUDES: BENDING PROJECTING WAVE PORTIONS OF METAL PLATE MEMBERS UPWARD BY A BALL CASTER (420), THE METAL PLATE MEMBERS BEING CUT IN SUCH A MANNER THAT A STRAIGHT LINES AND WAVES ARE FORMED; TRANSFERRING THE METAL PLATE MEMBERS USING A PAIR OF TRANSFER ROLLERS (530) WHICH ARE ROTATED BY A FIRST MOTOR (510) INSTALLED IN A MANUFACTURING APPARATUS OF A SPIRAL DUCT INCLUDING AN ELBOW; PRESSING A SINGLE FOLDED PORTION AND A DOUBLE FOLDED PORTION OF THE METAL PLATE MEMBERS USING UPPER (624) AND LOWER PRESSING ROLLERS (622) WHILE THE TRANSFERRED METAL PLATE MEMBERS ARE ROLLED INTO A CIRCULAR SHAPE BY A JOINT JIG (650); AND CUTTING THE ELBOW FORMED BY THE MANUFACTURING APPARATUS USING UPPER (661) AND LOWER CUTTERS (662). ACCORDING TO THE INVENTION, AN ELBOW CURVED AT A GENTLE ANGLE CAN BE FORMED, AND THE PROJECTING WAVE PORTIONS OF THE METAL PLATE MEMBERS ARE BENT SO AS TO FORM THE ELBOW. THEREFORE, A FLUID CAN SMOOTHLY FLOW ALONG THE CURVED PORTION OF THE ELBOW. FURTHER, AS THE ELBOW IS FORMED BY CONSECUTIVE PROCESSES, IT IS POSSIBLE TO INCREASE PRODUCTIVITY.

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