Patent ID: 8234899
Filing Date: 2012-08-07
Classification: B21D

Abstract:
1. A roll-forming machine comprising: a 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 first left-side carrier plate, a second left-side carrier plate, a first right-side carrier plate and a second right-side carrier plate, said first left-side carrier plate and said first right-side carrier plate each having a respective bottom side respectively mounted with a respective slide, the slides at the bottom side of each of first left-side carrier plate and said first right-side carrier plate being respectively coupled to a left-side rail and a right-side rail at a top side of said machine base, said second left-side carrier plate and said second right-side carrier plate each having a respective bottom side respectively mounted with a respective slide, the slides at the bottom side of each of second left-side carrier plate and said second right-side carrier plate being respectively coupled to a left-side rail and a right-side rail at a rear side of said machine base; pairs 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 the rack in horizontal at different elevations, an impression wheel fixedly mounted on one end of said first shaft, a first gear wheel fixedly mounted on an opposite end of said first shaft, a sheet-transfer wheel fixedly mounted on one end of said second shaft corresponding to said impression wheel, a second gear wheel fixedly mounted on an opposite 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 a 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 an output side of said reduction gear box and said second shaft, the racks of said pairs of forming roll sets being respectively mounted on said first left-side carrier plate, said second left-side carrier plate, said first right-side carrier plate and said second right-side carrier plate; two motors adapted to drive said reduction gearboxes of said forming roll sets; two first auxiliary shape-forming wheel sets respectively mounted on said second left-side carrier plate and said second right-side carrier plate at said machine base between two pairs of said pairs of forming roll sets near the rear side of said machine base, each said first auxiliary shape-forming wheel sets comprising a rack, an upper wheel holder provided at a top side of the rack of the respective first auxiliary shape-forming wheel set and having a sliding groove and a screw hole, a sliding block slidably coupled to the sliding groove of the upper wheel holder of the respective first auxiliary shape-forming wheel set, a lock screw for locking the sliding block of the respective first auxiliary shape-forming wheel set to the upper wheel holder of the respective first auxiliary shape-forming wheel set, a connection block fastened to a screw hole on one side of the sliding block of the respective first auxiliary shape-forming wheel set with a screw bolt and defining therein a locating groove, an adjustment screw, which has a threaded shank threaded into the screw hole of the respective first auxiliary shape-forming wheel set and a head positioned in the locating groove of the connection block of the respective first auxiliary shape-forming wheel set, and a nut threaded onto the threaded shank threaded shank of the adjustment screw of the respective first auxiliary shape-forming wheel set to secure the adjustment screw to the wheel holder of the respective first auxiliary shape-forming wheel set, an upper auxiliary shape-forming wheel that is pivoted to the sliding block of the respective first auxiliary shape-forming wheel set with a pivot, an adjustable lateral wheel holder provided laterally at the rack of the respective first auxiliary shape-forming wheel set, a lateral shape-forming wheel pivoted to the adjustable lateral wheel holder of the respective first auxiliary shape-forming wheel set, and a locating block fixedly provided at a bottom side of the rack of the respective first auxiliary shape-forming wheel set and affixed to one of said first left-side carrier plate and said second left-side carrier plate, the upper auxiliary shape-forming wheel of each said first auxiliary shape-forming wheel set having a flat circular bottom surface, a beveled peripheral surface extending around the flat circular bottom surface of the respective upper auxiliary shape-forming wheel, a flat annular top surface, a chamfered annular surface connected between the beveled peripheral surface and flat annular top surface of the respective upper auxiliary shape-forming wheel, the lateral shape-forming wheel of each said first auxiliary shape-forming wheel set having a conical work surface; two second auxiliary shape-forming wheel sets respectively mounted on said second left-side carrier plate and said second right-side carrier plate at said machine base between two pairs of said pairs of forming roll sets near the rear side of said machine base, each said second auxiliary shape-forming wheel sets comprising a rack, an upper wheel holder provided at a top side of the rack of the respective second auxiliary shape-forming wheel set and having a sliding groove and a screw hole, a sliding block slidably coupled to the sliding groove of the upper wheel holder of the respective second auxiliary shape-forming wheel set, a lock screw for locking the sliding block of the respective second auxiliary shape-forming wheel set to the upper wheel holder of the respective second auxiliary shape-forming wheel set, a connection block fastened to a screw hole on one side of the sliding block of the respective second auxiliary shape-forming wheel set with a screw bolt and defining therein a locating groove, an adjustment screw, which has a threaded shank threaded into the screw hole of the respective second auxiliary shape-forming wheel set and a head positioned in the locating groove of the connection block of the respective second auxiliary shape-forming wheel set, and a nut threaded onto the threaded shank threaded shank of the adjustment screw of the respective second auxiliary shape-forming wheel set to secure the adjustment screw to the wheel holder of the respective second auxiliary shape-forming wheel set, an upper auxiliary shape-forming wheel that is pivoted to the sliding block of the respective second auxiliary shape-forming wheel set with a pivot, an adjustable lateral wheel holder provided laterally at the rack of the respective second auxiliary shape-forming wheel set, a lateral shape-forming wheel pivoted to the adjustable lateral wheel holder of the respective second auxiliary shape-forming wheel set, and a locating block fixedly provided at a bottom side of the rack of the respective second auxiliary shape-forming wheel set and affixed to one of said first left-side carrier plate and said second left-side carrier plate, the upper auxiliary shape-forming wheel of each said second auxiliary shape-forming wheel set having a flat circular bottom surface, a beveled peripheral surface extending around the flat circular bottom surface of the respective upper auxiliary shape-forming wheel, a flat annular top surface, a chamfered annular surface connected between the beveled peripheral surface and flat annular top surface of the respective upper auxiliary shape-forming wheel, the lateral shape-forming wheel of each said second auxiliary shape-forming wheel set having a conical work surface; straightener means mounted on said machine base and adapted to straighten the wall of each C-shaped component and Z-shaped component been processed by said pairs of forming roll sets; wherein: each said first auxiliary shape-forming wheel set further comprises a bottom wheel holder provided at a lower part of the rack of the respective first auxiliary shape-forming wheel set, a first bottom auxiliary wheel pivoted to the bottom wheel holder of the respective first auxiliary shape-forming wheel set for working with a lower part of the conical work surface of the lateral shape-forming wheel of the respective first auxiliary shape-forming wheel set to ram each of two sides of a Z-shaped component into a 90° contained angle; each said second auxiliary shape-forming wheel set further comprises a bottom wheel holder provided at a lower part of the rack of the respective second auxiliary shape-forming wheel set, a second bottom auxiliary wheel pivoted to the bottom wheel holder of the respective second auxiliary shape-forming wheel set for working with a lower part of the conical work surface of the lateral shape-forming wheel of the respective second auxiliary shape-forming wheel set to ram each of two sides of a Z-shaped component into a 90° contained angle.