Fahrbarer Grossflächen-Schweissautomat zur Verschweissung von Kunststoffolien.

摘要

The automatic welder has a pressing and advancing device with two pressing rolls (20, 21) which are arranged one behind the other, are driven jointly and are looped around by a circulating pressing belt (22). The leading roll (21), in the travel direction, is mounted such that it can lift itself when it travels over unevennesses, thereby maintaining straight-line running. To improve said automatic welder even further, the two travel rolls (37) running in advance are arranged offset laterally and are mounted on a pivot plate (43) by means of which the travel track can be adjusted. Furthermore, the shaft (38) of the two travel rolls is not driven directly but a slip clutch in the form of two rubber blocks (39) is arranged between the shaft (38) and a separate drive shaft (18). The latter, and also the two pressing rolls (20, 21) are driven synchronously by a motor (10) by means of a toothed belt (13). <IMAGE>