Patent ID: 6244320
Filing Date: 2001-06-12
Classification: B29C

Abstract:
Welding machine having a heating plate (21), comprising a frame (1), a heating plate (21), a first workpiece support device (22), a second workpiece support device (23) facing the first workpiece support device (22), first means (24) for moving the heating plate (21) along an insertion travel (39) parallel to its plane between a welding position engaged between the first and second workpiece support devices (22, 23) and a loading position withdrawn from the first and second workpiece support devices (22, 23), second means (25) for moving the heating plate (21) along a welding travel (29) perpendicular to its plane between two extreme positions, and third means (26), different from the second means (25), for moving the second workpiece support device (23) along a contact travel (129) perpendicular to the plane of the heating plate (21) toward and away from the first workpiece support device (22) and between two respective bearing and withdrawn positions, together with means for moving the first workpiece support device (22) perpendicular to the heating plate (21) toward or away from the second workpiece support device (23), the first workpiece support device (22) further comprising:an adjustable position table (50) mounted on the frame (1), the table (50) being movable toward or away from the second workpiece support device (23), andmeans (150-155) for locking the table (50) in a particular position chosen from a set of predefined positions and to withstand pressure forces exerted on the table (50) during operation of the machine.