Patent ID: 6701991
Filing Date: 2004-03-09
Classification: B29C,B29K,B29L,Y10T

Abstract:
A hot air roller for synthetic resin including welding means (10), the welding means (10) including a waterproof film supply roller (1), a hot air generator (2), an upper roller (3), a lower roller being rotated by drive means, and a pedestal (51), whereinthe lower roller includes an upper drive roller (22) for circumferential-directed welding process and a lower drive roller (33) for longitudinal-directed welding process, and the upper and lower drive rollers (22) and (33) are disposed on a side of a drive body (12) having a support base (11) so that the upper drive roller (22) or the lower drive roller (33) is rotated to be alternatively brought into contact with the upper roller (3); the upper drive roller (22) is rotatably disposed on an end of a connecting rod (21), the connecting rod (21) being coupled to an end of a support arm (20), the support arm (20) being rotatably coupled to the drive body (12); the lower drive roller (33) is rotatably disposed on an end of a bent arm (31) and (31â€²), the bent arm (31) and (31â€²) being coupled to an end of a connecting rod (30), the connecting rod (30) being rotatably coupled to the drive body (12); and the pedestal (51) includes a support roller (50) on one end thereof, and another end of the pedestal (51) is disposed on an internal side of the support base (11) and coupled to a first rotation shaft (52) connected to a first cylinder shaft (54) of a first cylinder (53), the first cylinder being coupled to a side of the support base (11), so that a piston movement of the first cylinder shaft (54) allows the pedestal (51) to rotate to become in position of supporting the bent arm (31) of the lower drive roller (33).