Machine and method for folding and adhesively bonding blanks for the production of folding boxes

Patent metadata

Field	Value
Publication number	US-10507944-B2
Application number	US-201415024760-A
Country	US
Kind code	B2
Filing date	Sep 26, 2014
Priority date	Sep 27, 2013
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

A machine for folding and adhesively bonding blanks for the production of folding boxes. It includes a transport system which has at least one puller which wraps around deflecting rollers and extends along a processing path, a drive connected to a deflecting roller and drives the deflecting roller. Workpiece carriers are fastened to the puller and are moved along the processing path by the at least one puller. It also includes a magazine for a stack of blanks, a mechanism for removing individual blanks from the stack in the magazine, a feeding mechanism for the removed blanks to the workpiece carriers, structure for retaining blanks on the workpiece carriers, a control which is connected to the structure to retain blanks, and structure for adhesively bonding blanks.

First claim

The invention claimed is:

1. A machine for folding and adhesively bonding blanks for the production of folding boxes having:
A transport system ( 2 ) comprising at least one tractive means ( 7 , 8 ) wrapped around deflection rollers ( 3 to 6 ) and running along a processing line,
a drive ( 11 ) connected to at least one of the deflection rollers ( 3 to 6 ) and driving the at least one of the deflection rollers,
workpiece carriers ( 14 ) that, at intervals from each other, are fastened to the at least one tractive means ( 7 , 8 ), and are moved by the at least one tractive means ( 7 , 8 ) along the processing line,
at least one magazine ( 21 , 48 ) for a stack of blanks ( 22 , 49 ),
at least one means for removing ( 23 ) individual blanks ( 22 ) from the stack in the magazine ( 21 ),
at least one means for supplying ( 26 ) the removed blanks ( 22 ) to the workpiece carriers ( 14 ) in a movement synchronized with the workpiece carriers ( 14 ) along a part of the processing line,
active means arranged on the workpiece carriers ( 14 ) for holding ( 68 to 71 ) blanks ( 22 , 49 ) on the workpiece carriers ( 14 ), and active means arranged on the workpiece carriers ( 14 ) for folding ( 68 to 71 ) blanks ( 22 , 49 ) arranged on the workpiece carriers ( 14 ),
control means ( 84 to 87 ; 89 to 92 ) that are connected to the active means for holding ( 68 to 71 ) and the active means for folding ( 68 to 71 ), and control the holding and releasing of the blanks ( 22 , 49 ) by the active means for holding ( 68 to 71 ), and the folding ( 68 to 71 ) of the blanks by the active means for folding ( 68 to 71 ), and
at least one means arranged fixedly on the processing line for adhesively bonding ( 95 ) blanks ( 22 , 49 ), and/or means arranged on the workpiece carriers ( 14 ) for adhesively bonding blanks.

2. The machine according to claim 1 , wherein the control means ( 84 to 87 ; 89 to 92 ) are constructed and arranged to separately control each active means for holding ( 68 to 71 ) and/or each active means for folding ( 68 to 71 ) on each workpiece carrier ( 14 ).

3. The machine according to claim 1 , wherein the active means for holding ( 68 to 71 ) are selected from the group consisting of: Vacuum cup, folding flap, or a combination of the vacuum cup and folding flap, and/or the active means for folding ( 68 to 71 ) are selected from the group consisting of: Folding flap, vacuum cup, or a combination of the vacuum cup and folding flap.

4. The machine according to claim 3 , wherein the active means for holding are connected to means for supplying ( 56 ) a vacuum and/or compressed air from a fixedly arranged vacuum generator, to said workpiece carriers movable along the processing line ( 93 , 94 ).

5. The machine according to claim 4 , wherein the means for supplying ( 56 ) a vacuum have a fixed air channel ( 57 ) running parallel to the processing line and connected to the vacuum generator and which, on one side, has an opening ( 58 ) that extends along the processing line and is sealingly covered by a parallel belt ( 59 ) which runs around at least one tractive means and has holes ( 60 ) next to the workpiece carriers ( 14 ) which are connected via lines ( 61 ) to the vacuum cups ( 63 to 66 ) on the workpiece carriers.

6. The machine according to claim 4 , wherein valve means ( 88 ) are arranged on the workpiece carriers ( 14 ) by means of which the vacuum cups ( 63 to 66 ) are connected to the means for supplying a vacuum.

7. The machine according to claim 1 , wherein the active means for holding ( 68 to 71 ), and/or the active means for folding ( 68 to 71 ), comprise flaps arranged on the workpiece carriers ( 14 ) for clamping and/or folding sections of the blanks.

8. The machine according to claim 7 , wherein means for pivoting the flaps comprise spring means ( 72 to 75 ) which pretension the flaps in a starting position.

9. The machine according to claim 1 , wherein the control means ( 89 to 92 ) have stationary curves, and the active means for holding ( 68 to 71 ), and/or active means for folding ( 68 to 71 ) are coupled to contacting means ( 84 to 87 ) for contacting the curves.

10. The machine according to claim 1 , having passive means arranged on the workpiece carriers ( 14 ) for holding blanks ( 22 , 49 ) on the workpiece carriers ( 14 ), and/or at least one passive means fixedly arranged on the processing line for folding blanks ( 22 , 49 ) on the workpiece carriers ( 14 ).

11. The machine according to claim 10 , wherein the passive means for holding are stop bars arranged on the workpiece carriers ( 14 ).

12. The machine according to claim 1 , wherein the active means arranged on the workpiece carriers ( 14 ) for folding ( 68 to 71 ) the blanks ( 22 , 49 ) along a fold line in a direction perpendicular to the direction of transport, and/or a passive means fixedly arranged on the processing line for folding blanks ( 22 , 49 ) along a fold line in the direction of transport of the workpiece carriers ( 14 ).

13. The machine according to claim 1 , wherein the runs ( 17 to 20 ) of the at least one tractive means ( 7 , 8 ) are oriented vertically.

14. The machine according to claim 13 , which has an elongated, vertical frame ( 15 ).

15. The machine according to claim 1 , being housed in a frame ( 15 , 16 ).

16. The machine according to claim 1 , wherein the at least one magazine ( 21 ) and the means for supplying individual blanks ( 26 ) are arranged on the side of a first run of the tractive means ( 7 , 8 ), and wherein a delivery station for delivering folded and adhesively bonding blanks ( 22 , 49 ) is arranged on the side of a second run of the tractive means ( 7 , 8 ).

17. The machine according to claim 1 , wherein the means for removing ( 23 ) individual blanks from the stack in the magazine ( 21 ) comprise a vacuum system ( 24 , 25 ) which sections an individual blank ( 22 ) from a stack in the magazine into a transfer position, and wherein the means for supplying ( 26 ) the removed blanks ( 22 , 49 ) to the workpiece carriers ( 14 ) comprise an additional transport system ( 27 ) with at least one tractive additional tractive means ( 34 , 35 ) running around an additional deflection roller ( 28 to 33 ), wherein another run ( 36 , 37 ) of the additional tractive means runs by the transfer position, and another run ( 38 , 39 ) of the additional tractive means ( 34 , 35 ) runs along a section of a transfer line ( 93 ), drivers ( 40 , 41 ) are arranged on the additional tractive means, the additional transport system ( 27 ) has an additional drive ( 13 . 1 , 12 ), the vacuum system ( 24 , 25 ) and the additional drive are connected to the control means such that the vacuum system ( 24 , 25 ) is synchronized with the additional drive, and the additional drive is synchronized with the drive such that the vacuum system ( 24 , 25 ) always positions an individual blank ( 22 ) from the magazine ( 21 ) in the transfer position between the drivers ( 40 , 41 ) on the additional tractive means ( 34 , 35 ), the at least one additional tractive means ( 34 , 35 ) entrains the blank ( 22 ) held between the drivers ( 40 , 41 ), and the blank ( 22 ) is supplied to the workpiece carrier ( 14 ) via one of the runs ( 38 , 39 ) extending substantially in the direction of a section of the processing line ( 94 ).

18. The machine according to claim 1 , including means for supplying half a supply plate on which each blank ( 49 ) can be positioned, wherein the means for supplying have means for transferr

Assignees

• Eckermann Jens
• Krones Ag

Inventors

• Eckermann Jens
• Bischoff Walter

Classifications

• B31B50/02

  Feeding or positioning sheets, blanks or webs · CPC title

• B31B50/06

  from stacks · CPC title

• B31B50/36

  by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores · CPC title

• B31B50/54

  operating on moving material · CPC title

• B31B50/00

  Making rigid or semi-rigid containers, e.g. boxes or cartons · CPC title