Printing apparatus for printing bottles or similar containers
The invention relates to a printing apparatus for printing bottles or similar containers, having several printing positions on a transport element, which can be driven in rotation, by which the printing positions and/or the containers are moved on a closed path of movement between at least one container take-up and at least one container drop, having rotating print heads for applying at least one print image, preferably multi-color, onto a region to be printed on the external container surface of the containers, in the event of relative movement of the external container surface and at least one print head, wherein at least one enclosure is present, into which each of the containers, which are provided at a print position, is housed during the printing process with at least the region to be printed thereof.
1. An apparatus comprising a plurality of printing units, wherein said apparatus is configured for managing stray ink that fails to reach a container during printing thereon and for suppressing turbulence that would alter the path of ink droplets as they traverse a gap between a print head and a container to be printed upon during movement of said plurality of printing units, said apparatus comprising at least the plurality of printing units, and
a circumferentially drivable transport element for conveying said plurality of printing units on a closed path of movement between a container take-up and a container drop,
wherein each printing unit from said plurality of printing units comprises a print head and an enclosure,
wherein a container carried in said printing unit moves with said printing unit along said closed path of movement,
wherein said print head is configured for applying an image onto a region to be printed upon on an external container surface of a container during relative movement between said external container surface and said print head,
wherein said enclosure encloses said region while said container is provided at said printing unit,
whereby said enclosure prevents ink from said print head from entering the environment, and
wherein said enclosure suppresses turbulence in the vicinity of said print head during movement of said printing unit along said closed path of movement during the printing operation.
2. The apparatus of claim 1 , further comprising means for extracting atomized ink out of the enclosure.
3. The apparatus of claim 2 , further comprising a tube connected to said enclosure through which printing ink is extracted from said enclosure.
4. The apparatus of claim 1 , wherein the print head comprises an inkjet printhead.
5. The apparatus of claim 1 , wherein each printing unit comprises a container carrier wherein the container carrier is controllable to rotate or swivel about an axis to generate relative motion between said container and said print head during printing.
6. The apparatus of claim 5 , wherein said container carrier comprises a container plate, and said axis is a container plate axis.
7. The apparatus of claim 1 , further comprising a plurality of enclosures, wherein each printing unit from said plurality of printing units is assigned an enclosure from said plurality of enclosures, wherein said plurality of printing units comprises a first printing unit and a second printing unit, wherein said plurality of enclosures comprises a first enclosure and a second enclosure, wherein said first enclosure is assigned to said first printing unit, and wherein said second enclosure is assigned to said second printing unit.
8. The apparatus of claim 1 , wherein at least a part of said enclosure is movably configured to receive and release a container.
9. The apparatus of claim 1 , wherein the enclosure comprises cardboard.
10. The apparatus of claim 1 , wherein the enclosure has a double wall in at least a region thereof.
11. The apparatus of claim 1 , wherein said print head is configured to apply a polychrome image.
12. The apparatus of claim 1 , further comprising means for extracting printing ink from said enclosure.
13. The apparatus of claim 1 , further comprising a container carrier provided at each printing position, wherein said print head is controllable to rotate or swivel about an axis to generate relative motion during printing.
14. The apparatus of claim 1 , wherein at least a part of said enclosure is movably configured to entrap and liberate a container.
15. The apparatus of claim 1 , wherein said housing comprises a sleeve that defines a cylinder having an axis.
16. The apparatus of claim 15 , wherein said sleeve comprises first and second sleeve elements that move relative to each other along said axis of said cylinder to transition between an open cylinder position and a closed cylinder position.
17. The apparatus of claim 16 , wherein said sleeve comprises a disk disposed such that a normal vector thereof is parallel to said axis, said disk being disposed at an upper end of said sleeve.
18. The apparatus of claim 1 , wherein said enclosure comprises paperboard.
19. The apparatus of claim 1 , wherein said enclosure comprises plastic.