WASTE STRIPPING UNIT WITH SIMPLIFIED TOOL ADJUSTMENT IN A PACKAGING PRODUCTION MACHINE

• US 20120053039A1
• Filed: 05/12/2010
• Published: 03/01/2012
• Est. Priority Date: 05/13/2009
• Status: Active Grant

• Current Assignee: Bobst SA (JBF Finance SA)
• Original Assignee: Bobst SA (JBF Finance SA)
• Inventors: Compagnone, Giovanni, Corminboeuf, Glenn
• Granted Patent: US 10,245,743 B2
• Time in Patent Office: Days
• US Class Current: 493/373
• CPC Class Codes: B21B 31/103 Manipulators or carriages therefor
• CPC Class Codes: B26D 7/1836 by pulling out

Abstract

A waste stripping unit in a packaging production machine (1), positioned downstream of a cutting unit (3). The stripping unit includes a frame and two rotary tools cooperating with one another (17, 18). A first tool has waste stripping needles protruding radially outward from the outer surface. The two tools (17, 18) are mounted in a removable cassette (22). A frame (23) is provided with bearings supporting the two tools (17, 18), and which can be introduced into, attached to and extracted from the frame (16).

Claims

1. A waste stripping unit in a packaging production machine and positioned downstream of a cutting unit on a path of substrates, the waste stripping unit, comprising a frame, two rotary tools parallel to each and cooperating with one another defining a gap through which the substrates move, a first one of the tools having an outer surface provided with waste stripping needles protruding radially outward from the outer surface, a removable cassette in which the two tools are mounted, the cassette comprising a frame provided with bearings, located and configured for supporting the two tools such that the cassette can be introduced into, attached to and extracted from the frame.

2. The waste stripping unit as claimed in claim 1, wherein a second one of the tools has at least one strip made of a flexible material protruding radially outward from the second tool.

3. The waste stripping unit as claimed in claim 1, further comprising a transverse housing formed in the frame, the housing being configured such that the cassette is introduced and extracted transversely of the substrate path relative to the frame.

4. The waste stripping unit as claimed in claim 1, further comprising a first driving device for the waste stripping unit, which is mounted at a rear of the frame for cooperating with a second driving device for the cassette, and the first and second driving device, together drive the two tools in rotation.

5. The waste stripping unit as claimed in claim 4, wherein the first driving device for the unit comprises an electric motor and a motor pinion thereon, and the second driving device for the cassette comprises a first pinion for driving rotation of the first tool, the first pinion meshing with a second pinion for driving the second tool and also meshing with the motor pinion.

6. The waste stripping unit as claimed in claim 3, further comprising a device for displacing the cassette transversely.

7. The waste stripping unit as claimed in claim 6, wherein the displacement device comprises a rack mounted at the cassette and the rack is located and configured to mesh with a pinion driven by a motor at the frame.

8. The waste stripping unit as claimed in claim 1, further comprising a first transport assembly for transporting the flat substrate and placed upstream of the cassette, and a second transport assembly for transporting the flat substrate, and placed downstream of the cassette, the first and the second transport assemblies being mounted in the frame.

9. The waste stripping unit as claimed in any one of the in claim 1, wherein at least one of the two tools comprises a mandrel and a removable sleeve, which is inserted on, fixed to and driven in rotation by the mandrel.

10. A packaging production machine, which comprises a cutting unit for cutting substrates and the waste stripping unit as claimed in claim 1, the stripping unit is positioned downstream of the cutting unit on the path of the substrates.

11. The machine as claimed in claim 10, which comprises, in order, from upstream to downstream on the path of the substrates, a diecutting platen press for cutting the substrates, a driving arrangement for the cut substrates, a transfer device, a first vacuum transport for the cut substrates, the unit, and a second vacuum transport for the cut substrates.

12. A waste stripping cassette for a waste stripping unit for being positioned downstream of a cutting unit for cutting one or more flat substrates in a packaging production machine, the cassette comprising a frame provided with bearings, two rotary tools supported by the bearings and positioned for the tools cooperating with one another, a first one of the tools having an outer surface, waste stripping needles protruding radially outward from the outer surface, the cassette being introduced into, attached to and extracted from a frame of the waste stripping unit.

13. The cassette as claimed in claim 12, wherein a second one of the tools has at least one strip made of a flexible material protruding radially outward;

and the needles protruding toward the second one of the tools.

14. The cassette as claimed in claim 13, wherein at least one of the two tools comprises a mandrel and a removable sleeve, which is inserted on, immobilized on and driven in rotation by the mandrel.