Apparatus for detaching pieces of tube provided with transverse

Details Apparatus for detaching pieces of tube provided with transverse Apparatus for detaching pieces of tube provided with transverse

1992-11-25

1994-05-17

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493204, B31B 2396, B31B 2398

Patent

active

053123174

ABSTRACT:
An apparatus for providing transverse weld seams and transverse detaching cuts or for providing detaching weld seams on a tubular or semi-tubular web of thermoplastic synthetic resin, and for stacking the detached sections includes a transverse welding and transverse detaching station for detaching sections having bottom weld seams and any leading head weld seams from the web and a stacking station for retaining or fixing the supplied sections. The web is moved intermittently. To cool the trailing weld seams of the sections without causing the sections to stick together adjacent to the bottom weld seams during stacking, a drum is provided which rotates about a transverse axis between the transverse welding and transverse detaching station and the stacking station. The wall of the drum includes at least two wall parts. The drum is adapted to be driven in step with the welding process by rotating the drum through an angular increment related to the number of wall parts of the drum in each revolution. In synchronization with stacking the cut sections at the stacking station, a path is formed for allowing the web to be pushed through gaps between the wall parts of the drum between the transverse welding and the transverse detaching station and the stacking station.

REFERENCES:
patent: 3587410 (1971-06-01), Dechanciaux
patent: 4195960 (1980-04-01), Schulze
patent: 4286907 (1981-09-01), Houle et al.
patent: 4395252 (1983-07-01), Lehmacher
patent: 4512757 (1985-04-01), Dreckmann
patent: 4854928 (1989-08-01), Fukuyama
patent: 4925439 (1990-05-01), Schneider
patent: 5030191 (1991-07-01), Reifenhauser

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