Global Patent Index - EP 1043088 A1

EP 1043088 A1 2000-10-11 - A process and machine for continuous formation of conveyor screws for archimedes-type screws

Title (en)

A process and machine for continuous formation of conveyor screws for archimedes-type screws

Title (de)

Ein Verfahren und eine Vorrichtung zur kontinuierlichen Herstellung von Förderschnecken für Archimedesförderschnecken

Title (fr)

Un procédé et un dispositif pour former en continu des transporteurs à vis pour les transporteurs du type archimèdes

Publication

EP 1043088 A1 (EN)

Application

EP 00830086 A

Priority

IT MO990065 A

Abstract (en)

In the process and machine of the invention, a band (2) is fed continuously between a pair of rollers (3a, 3b) which turn the band (2) into a spiral (4), into a central space of which a succession of support shafts (A, B) is advanced in order that the spiral forming is achieved about the continuously advancing support shafts. A welder (8) fixes the spiral (4) to each support shaft, and a cutting device (9) cuts the spiral into lengths, each of which lengths of spiral is fixed to a single shaft. Variably-stepped spirals can also be produced using the invention, with very good precision and relatively simply. <IMAGE>

IPC 1-7 (main, further and additional classification)

B21D 11/06

IPC 8 full level (invention and additional information)

B21C 37/26 (2006.01)

CPC (invention and additional information)

B21C 37/26 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

EP 1043088 A1 20001011; EP 1043088 B1 20021204; AT 228900 T 20021215; DE 60000888 D1 20030116; DE 60000888 T2 20030911; IT 1310206 B1 20020211; IT MO990065 A1 20001006; IT MO990065 D0 19990406