Method and packaging device for producing packaging units, and application head for corresponding use
A method and a packaging apparatus for producing packaging units as well as an application head ( 60 ) for use in the method or in the packaging apparatus are disclosed. In the method, a flat packaging blank ( 14 ) is transferred, by an application head ( 60 ) to an article grouping ( 20 ) held ready, to be applied there to an upper end face of the article grouping ( 20 ), producing a mechanical connection between the packaging blank ( 14 ) and the article grouping ( 20 ). Foldable portions ( 24 ) of the packaging blank ( 14 ) that project beyond an upper side of the article grouping ( 20 ) are then folded over and are applied to the article grouping ( 20 ) laterally. The packaging apparatus is equipped with at least one such application head ( 60 ).
1 . A controllable application head ( 60 ), comprising:
a receiving device for at least one packaging blank ( 14 ) that places the packaging blank ( 14 ) on an upper side of article grouping ( 20 ) of at least two articles ( 12 ), and
at least one application unit ( 62 ) for producing a mechanical connection between the packaging blank ( 14 ) and the article grouping ( 20 ),
wherein the receiving device comprises at least one suction device which can be subjected to a controllable negative pressure and which can be subjected to an increased negative pressure for receiving and holding the at least one packaging blank ( 14 ) and to a reduced negative pressure for releasing the at least one packaging blank ( 14 ), and
wherein each of the at least one application unit ( 62 ) comprises folding elements ( 88 ) for folding over side surfaces ( 24 ) of the packaging blank ( 14 ) that project beyond an upper side of the article grouping ( 20 ) and for preparing a secondary fixing device ( 30 ) between the article grouping ( 20 ) and the packaging blank ( 14 ).
2 . The controllable application head of claim 1 , wherein the controllable application head is movable within a movement space between a supply or provision area for a plurality of packaging blanks ( 14 ) and a location of each of the article groupings ( 20 ) to be treated.
3 . The controllable application head claim 1 , wherein each of the at least one application unit ( 62 ) is comprises:
a contact plate ( 74 ), that is vertically movable between two end positions, and
at least one controllable suction element ( 68 ) for the negative-pressure-controlled holding or releasing of the at least one packaging blank ( 14 ).
4 . The controllable application head of claim 3 , wherein each of the at least one application unit ( 62 ) comprises a shaping element ( 82 ) for deforming a defined folding region ( 46 ) of the at least one packaging blank ( 14 ) placed on an article grouping ( 20 ).
5 . The controllable application head of claim 4 , wherein the movable contact plate ( 74 ), the suction elements ( 68 ), the folding elements ( 88 ), and the shaping element ( 82 ) of each application unit ( 62 ) can each carry out, in coordination with each other, forming the primary fixing device ( 22 ) and at least preparation of the secondary fixing device ( 30 ).
6 . The controllable application head of claim 4 , wherein the shaping element ( 82 ) forms primary fixing device ( 22 ) for producing mechanical connections between the articles ( 12 ) and the packaging blank ( 14 ).
7 . The controllable application head of claim 1 comprising at least two application units ( 62 ) for the substantially synchronous treatment of two separate article groupings ( 20 ) and for equipping each of them with packaging blanks ( 14 ).
8 . A method for producing packaging units ( 10 ) of at least two articles ( 12 ) held together by at least one packaging blank ( 14 ), comprising:
transferring a flat packaging blank ( 14 ), from a supply, by an application head ( 60 ) to an article grouping ( 20 ) held ready,
applying the packaging blank ( 14 ) to an upper end face of the article grouping ( 20 ), producing a mechanical connection between the packaging blank ( 14 ) and the article grouping ( 20 ),
with at least one application unit ( 62 ) comprising folding elements ( 88 ), folding over at least one foldable portion ( 24 ) of the packaging blank ( 14 ), that projects beyond an upper side of the article grouping ( 20 ) and for placing it the at least one foldable portion ( 24 ) against a side surface ( 26 ) of the article grouping ( 20 ),
lifting the application head ( 60 ) from the article grouping ( 20 ), and
removing the application head ( 60 ) from the article grouping ( 14 ).
9 . The method of claim 8 , further comprising positioning the application head ( 60 ), together with the packaging blank ( 14 ) held therein, at a vertical distance above the article grouping ( 20 ), which is stationary or is in a conveying movement.
10 . The method of claim 9 , further comprising moving the application head ( 60 ) within a movement space between a supply or provision location for the flat packaging blanks ( 14 ) and a provision location or a conveyor section with the article grouping ( 20 ) located there.
11 . The method of claim 10 , further comprising lowering the application head ( 60 ) as a whole, together with the packaging blank ( 14 ) held therein, onto the upper side of the article grouping ( 20 ), wherein the packaging blank ( 14 ) is applied thereto.
12 . The method of claim 11 , wherein the application head ( 60 ) comprises at least two modular application units ( 62 ), arranged next to each other within an application head ( 60 ), and further comprising processing, in parallel, two article groupings ( 20 ) of the same type and equipping them with packaging blanks ( 14 ).
13 . The method of claim 12 , wherein the applying step comprises lowering a flat contact plate ( 74 ) in each application unit ( 62 ), while at the same time, deactivating a negative pressure on suction elements ( 68 ) holding the packaging blank ( 14 ) in the corresponding application unit ( 62 ) or lowering the contact plate ( 74 ) relative to the suction elements ( 68 ) that are stationary in each application unit ( 62 ), whereby the packaging blank ( 14 ) is, in each instance, distanced from the suction elements ( 68 ) and released.
14 . The method of claim 12 , further comprising pressing the packaging blank ( 14 ) at least some distance between adjacent articles ( 12 ) of the article grouping ( 20 ) or between adjacent article rows of the article grouping ( 20 ), wherein this pressing, by a shaping element ( 82 ) deforms a folding region ( 46 ) of the packaging blank ( 14 ), wherein the shaping element ( 82 ) is arranged in a stationary manner in each application unit ( 62 ), wherein the shaping element ( 82 ) is covered by the contact plate ( 74 ) when the contact plate is lowered and which projects from an underside of the contact plate ( 74 ) by raising the contact plate ( 74 ) and, when the application head ( 60 ) is lowered, pushes the folding region ( 46 ) of the packaging blank ( 14 ) downwards between the articles ( 12 ) or article rows.
15 . The method of claim 14 , further comprising, in connection with or simultaneously with the lowering of the shaping element ( 82 ), wherein the lateral folding elements ( 88 ), arranged in a fixed position in each application unit ( 62 ) act upon the packaging blank ( 14 ) and fold side surfaces ( 24 ), projecting laterally beyond an upper side of the article grouping ( 20 ), of the packaging blank ( 14 ), and fold the side surfaces ( 24 ) downwards by a folding angle of approximately 90 degrees and place them against the side surfaces ( 26 ) of the article grouping ( 20 ).
16 . A packaging apparatus for producing packaging units ( 10 ), comprising at least two articles ( 12 ), which at least two articles ( 12 ) are held together by at least one packaging blank ( 14 ), and which packaging apparatus at least comprises:
a conveyor, a transport section ( 128 ), or a provision position for conveying grouped articles ( 12 ) or for providing the grouped articles ( 12 ),
an application device for equipping the article groupings ( 20 ) with at least one packaging blank ( 14 ) each, wherein the application device comprises at least one controllable application head ( 60 ) movable within a defined movement space,
wherein the application head ( 60 ) is capable of equipping at least one article grouping ( 20 ), located within the movement space or moving there, with a packaging blank ( 14 ) and applying this blank to the article grouping ( 20 ),
wherein the application head ( 60 ) comprises controllable devices for receiving, holding, and releasing the packaging blanks ( 14 ), and
wherein the application head ( 60 ) comprises controllable tools for producing a mechanical connection between each article grouping ( 20 ) and the packaging blank ( 14 ) applied thereto, and wherein one controllable tool comprises folding elements ( 88 ) for folding over at least one foldable portion ( 24 ) of the packaging blank ( 14 ), that projects beyond an upper side of the article grouping ( 20 ), of the packaging blank ( 14 ) and for placing the at least on foldable portion against a side surface ( 26 ) of the article grouping ( 20 ).
17 . The packaging apparatus of claim 16 , wherein at least some of the mechanical connections between each article grouping ( 20 ) and the packaging blank ( 14 ) are produced by a shaping element ( 82 ).