Advancing device for advancing a film web in a bag filling installation
AssigneeWindmoller & Holscher
InventorsHans-Ludwig Voss, Oliver Huil, Ralf Udally, Thomas Hawighorst, Rüdiger Große-Heitmeyer, Roman Smid
Life of this patent
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Abstract
The invention relates to an advancing device (10) for advancing a film web (200) in a bag filling installation (100, having a main advancing drive (20) with at least one driven main advancing roller (22) for advancing the film web (200), wherein for an adjustment of the tensile stress of the film web (200) in the transport direction (T) of the film web (200) an auxiliary advancing drive (30) is disposed before the main advancing drive (20) with at least one driven auxiliary advancing roller (32) for advancing the film web (200).
Claims12
A advancing device in a bag filling installation for advancing a film web, comprising a main advancing drive with at least one driven main advancing roller for advancing the film web, wherein for an adjustment of the tensile stress of the film web in the transport direction (T) of the film web an auxiliary advancing drive is disposed before the main advancing drive and spaced apart from the main advancing drive, the auxiliary advancing drive having at least one driven auxiliary advancing roller for advancing the film web,
- wherein at least one of the main advancing drive or the auxiliary advancing drive have at least one freely rotatable film roller and wherein the freely rotatable film roller is disposed in such a way that an S-shaped loop (S) of the film web forms along the transport direction (T) of the film web between the freely rotatable film roller and the auxiliary advancing roller and/or between the freely rotatable film roller and the main advancing roller
- wherein the S-shaped loop (S) of the film web is in abutment with the freely rotatable film roller and the auxiliary advancing roller and/or with the freely rotatable film roller
- and the main advancing roller
- wherein a total looping angle of the film web for the auxiliary advancing roller
- and/or for the main advancing roller arid/or for the freely rotatable film roller at least 180°, wherein
- an electronic coupling device is connected in a signal communicating manner to the auxiliary advancing drive of the auxiliary advancing roller and the main advancing drive of the main advancing roller for a setting of a respective advancing speed to be carried out electronically.
An advancing device in a bag filling installation for advancing a film web comprising a main advancing drive with at least one driven main advancing roller for advancing the film web, wherein for an adjustment of the tensile stress of the film web in the transport direction (T) of the film web an auxiliary advancing drive is disposed before the main advancing drive and spaced apart from the main advancing drive, the auxiliary advancing drive having at least one driven auxiliary advancing roller for advancing the film web,
- wherein at least one of the main advancing drive or the auxiliary advancing drive have at least one freely rotatable film roller and wherein the auxiliary advancing drive is disposed upstream of the main advancing drive and simultaneously downstream of a buffer device and,
- wherein the freely rotatable film roller is disposed in such a way that an S-shaped loop (S) of the film web forms along the transport direction (T) of the film web between the freely rotatable film roller and the auxiliary advancing roller and/or between the freely rotatable film roller and the main advancing roller, wherein the S-shaped loop (S) of the film web is in abutment with the freely rotatable film roller and the auxiliary advancing roller and/or with the freely rotatable film roller and the main advancing roller, wherein a total looping angle of the film web is at least 180°,
- wherein an electronic coupling device is connected in a signal communicating manner to the auxiliary advancing drive of the auxiliary advancing roller and the main advancing drive of the main advancing roller for a setting of a respective advancing speed to be carried out electronically.
Dependencies are inferred from the claim text.