Roll-forming machine

A roll-forming machine for the formation of C-shaped components and Z-shaped component selectively from sheet material, comprising:

• a machine base, said machine base comprising a guide block unit provided at a front side thereof for guiding in a sheet material for processing;
• a plurality of forming roll sets for selectively processing said sheet material into a shape selected from a group consisting of C-shaped components and Z-shaped components, each said forming roll set comprising a rack, a first shaft and a second shaft pivotally mounted in said rack and positioned horizontally at different elevations, an impression wheel fixedly mounted on a first end of said first shaft, a first gear wheel fixedly mounted on a second end of said first shaft, a sheet-transfer wheel fixedly mounted on a first end of said second shaft corresponding to said impression wheel, a second gear wheel fixedly mounted on a second end of said second shaft and meshed with said first gear wheel, a shape-forming wheel, which has a wheel shaft pivotally mounted in a wheel holder at said rack and is adapted to ram the sheet material being delivered through the gap between said impression wheel and said sheet-transfer wheel into a predetermined shape, a reduction gear box, and a coupling coupled between said reduction gear box and said second shaft, a plurality of pairs of forming roll sets are sequentially arranged along the machine base, each of the plurality of pairs of forming roll sets includes two of the plurality of forming roll sets;
• two forming roll set driving motors disposed at two opposite lateral sides of said machine base and adapted to drive the reduction gear boxes of said forming roll sets;
• a first bottom auxiliary shape-forming wheel set located between two adjacent pairs of forming roll sets and adapted to shape a bottom part of a processed sheet material into a 90° contained angle;
• a second bottom auxiliary shape-forming wheel set located between two adjacent pairs of forming roll sets and adapted to shape each of two sides of the bottom part of the sheet material processed through said first bottom auxiliary shape-forming wheel set into a predetermined angle;
• a top auxiliary shape-forming wheel set located between two adjacent pairs of forming roll sets and adapted to shape each of two sides of a top part of the processed sheet material into a predetermined angle;
• a small straightener set between two adjacent pairs of forming roll sets and adapted to straighten a wall of the processed sheet material;
• and
• a big straightener set at a rear side machine base and adapted to straighten a wall of a finished C-shaped component or Z-shaped component;
• when a sheet material passed through said guide block unit to said machine base, the sheet material is transferred in proper order through the impression wheel and sheet-transfer wheel of each said forming roll set and then processed in proper order by the shape-forming wheel of each said forming roll set, said first bottom auxiliary shape-forming wheel set, said second bottom auxiliary shape-forming wheel set, said top auxiliary shape-forming wheel set, said small straightener and said big straightener into the desired C-shaped component;
• when the operator positions the shape-forming wheels of assigned forming roll sets on opposing surfaces of the prepared sheet material, the roll-forming machine is set to process the prepared sheet material into a Z-shaped component;
• wherein:
• said plurality of forming roll sets are arranged into 15 pairs of forming roll sets numbered from 1st through 15th, the two forming roll sets of each pair of forming roll sets being symmetrically disposed at left and right sides on said machine base such that a gap is defined between the two impression wheels of each pair of forming roll sets, and a gap is defined between the two sheet-transfer wheels of each pair of forming roll sets;
• the two racks of each pair of forming roll sets are respectively mounted on a first left-side carrier plate and second left-side carrier plate and a first right-side carrier plate and second right-side carrier plate, said first left-side carrier plate and said first right-side carrier plate having a respective bottom side respectively mounted with slides that are respectively coupled to a left-side rail and a right-side rail at said machine base, said second left-side carrier plate and said second right-side carrier plate having a respective bottom side respectively mounted with slides that are respectively coupled to a left-side rail and a right-side rail at a rear side of said machine base, wherein each of the first bottom auxiliary shape-forming wheel set, the second bottom auxiliary shape-forming wheel set, the top auxiliary shape-forming wheel set, the small straightener set, and the big straightener set are separated by at least one of the plurality of pairs of forming roll sets.