EP 0307125 B1 19930210 - APPARATUS FOR TRACKING A WEB
Title (en)
APPARATUS FOR TRACKING A WEB
Publication
Application
Priority
US 9538887 A 19870908
Abstract (en)
[origin: EP0307125A2] An apparatus and method for automatically tracking a web of film fed through a packaging machine is provided. The apparatus includes a pair of photoelectric sensors (39, 41) located on a lateral side of the apparatus in juxtaposition to a first side (40) of the web of film. A pair of abutment members (43, 45) for abutting a side of the web of film are also provided. The abutment members are located on opposing sides of the web of film. The apparatus includes a member (59) for moving the abutment members in a first lateral direction or a second lateral direction to cause one of the abutment membersto contact a side of the web of film. A control circuit for actuating the member is provided. The photoelectric sensors are coupled to the control circuit and cause the control circuit to actuate the member for moving the abutment means if an edge of the first side of the web of film does not pass between the pair of photoelectric sensors.
IPC 1-7
IPC 8 full level
B65B 41/18 (2006.01); B65B 41/00 (2006.01); B65H 23/032 (2006.01)
CPC (source: EP)
B65H 23/032 (2013.01)
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 0307125 A2 19890315; EP 0307125 A3 19900502; EP 0307125 B1 19930210; DE 3878358 D1 19930325; DE 3878358 T2 19931021; JP H01261154 A 19891018
DOCDB simple family (application)
EP 88307991 A 19880830; DE 3878358 T 19880830; JP 22436888 A 19880907