METHOD FOR PROTECTING A CONVERTING UNIT FOR CONVERTING A WEB SUBSTRATE, FEEDING STATION AND PACKAGING PRODUCTION MACHINE

• US 20170057771A1
• Filed: 10/14/2016
• Published: 03/02/2017
• Est. Priority Date: 07/14/2010
• Status: Active Grant

• Current Assignee: Bobst Mex SA (JBF Finance SA)
• Original Assignee: Bobst Mex SA (JBF Finance SA)
• Inventors: CLEMENT, Philippe
• Granted Patent: US 10,829,331 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B65H 2301/4491 transforming movement from continuous to intermittent or vice versa
• CPC Class Codes: B65H 26/02 responsive to presence of irregularities in running webs
• CPC Class Codes: B65H 26/025 responsive to web breakage

Abstract

A method for protecting a unit for converting a web substrate to limit a jam of the substrate inside the unit, the unit converting the substrate when the unit is stopped, in a packaging production machine: the steps of: detecting at the outlet of the unit that the converted web does not come out; stopping a motor of an infeed arrangement to prevent the substrate from entering the unit; stopping a motor of a feathering drive; and simultaneously stopping the machine, and guiding the substrate to an accumulation storage.

Claims

1. A feeding station configured to feed a converting unit with a web substrate, the unit converting the substrate when stopped, the station comprising:

a feathering drive,

a loop control arranged to generate variations in speed of the web,

an infeed arrangement,

an accumulation storage for the substrate,

a guiding mechanism positioned and configured to guide the substrate toward the accumulation storage during a transitional phase between the stopping of the infeed arrangement and the stopping of the feathering drive.

2. The station according to claim 1, wherein the accumulation storage has an opening oriented in the direction of the loop control.

3. The station according to claim 1, wherein the station comprises a mechanical barrier positioned and configured to prevent the substrate from damaging the loop control and the feathering drive.

4. The station according to claim 3, comprising, from upstream to downstream in a direction of substrate movement, a lateral web guiding, the feathering drive, the loop control and the infeed arrangement.

5. The station according to claim 4, comprising, upstream of the feathering drive, a dance roller and a web decurler.

6. The station according to claim 3, wherein the loop control comprises a satellite roller positioned such that when the satellite roller is positioned against the mechanical barrier, the satellite roller protects the loop control against the web during the transitional phase between the stopping of the infeed arrangement and the stopping of the feathering drive.

7. A packaging production machine comprising the feeding station of claim 1, and further comprising:

the converting unit positioned and configured to convert a substrate when the substrate is stopped;

a jam detector positioned at the outlet of the converting unit and configured to detect a jam and to transmit a jam signal corresponding to a jam of the substrate inside the converting unit; and

an automated jam signal processor configured to process the jam signal and to generate stop signals transmitted respectively, to the infeed arrangement, and to the feathering drive.

8. The packaging production machine according to claim 6, wherein the automated jam signal processor is configured to generate an emergency stop signal transmitted to the infeed arrangement and a gradual stop signal transmitted to the feathering drive.

9. The machine according to claim 6, wherein the converting unit comprises a diecutting platen press.

10. The packaging production machine according to claim 6, wherein the automated jam signal processor is configured to transmit a stop signal to an additional component of the machine.

11. The packaging production machine according to claim 6, wherein the automated jam signal processor is configured to generate an emergency stop signal to stop all units upstream of the detected jam of the machine.

12. The machine according to claim 1, wherein the accumulation storage is positioned above the loop control.