CONTINUOUS FOLDING PROCESS

• US 20090298661A1
• Filed: 05/28/2009
• Published: 12/03/2009
• Est. Priority Date: 05/29/2008
• Status: Active Grant

• Current Assignee: BHS Corrugated Maschinen- und Anlagenbau GmbH (Bwv-Wellpappenmaschinen Vertriebs-GmbH)
• Original Assignee: BHS Corrugated Maschinen- und Anlagenbau GmbH (Bwv-Wellpappenmaschinen Vertriebs-GmbH)
• Inventors: GRILL, Martin
• Granted Patent: US 9,290,354 B2
• Time in Patent Office: Days
• US Class Current: 493/357
• CPC Class Codes: B65H 2301/42144 by erecting articles from horizontal transport flushing with the supporting surface of the pile
• CPC Class Codes: B65H 2301/4216 of web folded in zig-zag form
• CPC Class Codes: B65H 2701/1768 Book covers and the like
• CPC Class Codes: B65H 33/02 by moving a blade or like member into the pile
• CPC Class Codes: B65H 45/1015 Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
• CPC Class Codes: B65H 45/20 Zig-zag folders B65H45/228 takes precedence

Abstract

An installation for folding and stacking an endlessly producible web of corrugated cardboard comprises a folding device for folding a web of corrugated cardboard along predetermined folds and a stacking device which is arranged downstream of the folding device for stacking the web of corrugated cardboard, which has been folded along the folds, in stacks.

Claims

1. An installation for folding and stacking an endlessly producible web (2) of corrugated cardboard, the installation comprising

a. a folding device (5;

5a;

5b;

5c;

5d) for folding a web (2) of corrugated cardboard along predetermined folds (20); and

b. a stacking device (7) arranged downstream of the folding device (5;

5a;

5b;

5c;

5d) for stacking the web (2) of corrugated cardboard, which has been folded along the folds (20), in stacks (51).

2. An installation according to claim 1, wherein a squeezing device (4) is furthermore provided upstream of the folding device (5;

5a;

5b;

5c;

5d) for embossing folds (20) into the web (2) of corrugated cardboard.

3. An installation according to claim 1, wherein in addition to that, a cutting device (6) is provided for separating the folded and stacked web (2) of corrugated cardboard.

4. An installation according to claim 3, wherein the cutting device (6) is arranged downstream of the folding device (5;

5a;

5b;

5c;

5d).

5. An installation according to claim 1, wherein the folding device (5;

5a;

5b;

5c;

5d) comprises at least one engagement member (46;

46b;

46c;

46d) with finger-shaped projections (49).

6. An installation according to claim 5, wherein the engagement member (46;

46b;

46c) comprises at least two degrees of freedom.

7. An installation according to claim 5, wherein the engagement member (46;

46b;

46c) comprises at least one degree of rotational freedom.

8. An installation according to claim 1, wherein the stacking device (7) comprises at least one guide member (50) for precisely aligning the stacks (51).

9. An installation according to claim 8, wherein the at least one guide member (50) comprises an adjustable inclination in at least a portion thereof.

10. A corrugated cardboard production installation comprising

a. a device (60) for producing endless webs (2) of corrugated cardboard;

and

b. a device according to one of the preceding claims for folding and stacking the webs (2) of corrugated cardboard.

11. A method of folding and stacking endless webs (2) of corrugated cardboard, the method comprising the following steps:

embossing folds (20) into a web (2) of corrugated cardboard by means of a squeezing device (4);

folding the web (2) of corrugated cardboard along the folds (20) by means of a folding device (5);

stacking the folded web (2) of corrugated cardboard into stacks (51) in a stacking device (7).

12. A method according to claim 11, wherein the stacks (51) are separated from the upstream web (2) of corrugated cardboard.