Measuring device, measuring system, and method for calibrating printing stations

• US 10,427,432 B2
• Filed: 12/22/2015
• Issued: 10/01/2019
• Est. Priority Date: 01/12/2015
• Status: Active Grant

• Current Assignee: KHS GmbH (Salzgitter AG)
• Original Assignee: KHS GmbH (Salzgitter AG)
• Inventors: Reiniger, Markus, Koers, Sascha, Preckel, Katrin, Teufert, Daniel, Van De Wynckel, Werner
• Primary Examiner(s): Huffman, Julian D
• Application Number:
  US15/542,166
• Publication Number:
  US 20180333965A1
• Time in Patent Office: 1,379 Days
• CPC Class Codes: B41J 25/304 Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
• CPC Class Codes: B41J 3/4073 Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects B41J3/283, B41J3/286 take precedence; building up a 3D object using individual droplets from jetting heads B29C64/112
• CPC Class Codes: B41J 3/40733 Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
• CPC Class Codes: B41M 1/40 Printing on bodies of particular shapes, e.g. golf balls, candles, wine corks sublimation or volatilisation of pre-printed design B41M5/035
• CPC Class Codes: G01B 11/24 for measuring contours or curvatures

Abstract

A measuring device includes a receiving device that detects measurement information indicative of a position and/or orientation of a position-modifiable component of a printing station having a print head whose position and/or orientation is adjustable by a motor and that transfers measurement information via a link. A receiving holder then introduces this receiving device into a structure that holds it at a defined position relative to the position-modifiable component. Suitable structures in which the receiving device can be introduced include a container-holding device and a receiving element for a container-holding device.

Claims

1. An apparatus comprising a measuring device for use in calibrating a print head that prints upon containers in a rotary printing machine, said measuring device comprising a receiving device, a link, and a receiving holder, wherein said receiving device detects measurement information indicative of a value, wherein said value is selected from the group consisting of a position of a position-modifiable component of a printing station having a print head whose position is adjustable by a motor and an orientation of a position-modifiable component of a printing station having a print head whose orientation is adjustable by a motor, wherein said link is configured for transferring said measurement information from said receiving device, wherein said receiving holder is configured to introduce said receiving device into a structure that holds said receiving device at a defined position relative to said position-modifiable component, and wherein said structure is selected from the group consisting of a container-holding device and a receiving element for a container-holding device.

2. The apparatus of claim 1, wherein said receiving holder is configured to be attached to said structure and detached from said structure after having been attached to said structure.

3. The apparatus of claim 1, wherein said structure comprises said container-holding device, wherein said apparatus further comprises an upper fixing-device and a lower fixing-device, wherein said receiving holder is configured for holding said container-holding device between said upper and lower fixing-devices, and wherein said container-holding device is under tension as a result of being held between said upper and lower fixing-devices.

4. The apparatus of claim 1, wherein said container-holding device comprises a mounting surface and a tulip, wherein said receiving holder comprises an upper free-end and a lower free-end, wherein said upper free-end is matched to said tulip, and wherein said lower free-end matches said mounting surface.

5. The apparatus of claim 1, wherein said receiving holder is configured to suspend said receiving device.

6. The apparatus of claim 1, wherein said receiving holder comprises a reference surface that interacts with a counter-surface on said printing station, said counter-surface and said reference surface being complementary to each other.

7. The apparatus of claim 1, wherein said receiving holder comprises a reference surface, wherein said receiving element comprises a counter-surface that is complementary to said reference surface, wherein said reference surface interacts with said counter-surface.

8. The apparatus of claim 1, wherein said receiving device comprises a camera.

9. The apparatus of claim 1, further comprising a laser scanner, said laser scanner being a constituent of said receiving device.

10. The apparatus of claim 1, wherein said receiving device is configured for receiving said measurement information during movement of said position-modifiable component.

11. The apparatus of claim 1, wherein said position-modifiable component comprises a region of a print head.

12. The apparatus of claim 1, wherein said position-modifiable component comprises a print head-carrier.

13. The apparatus of claim 1, wherein said position-modifiable component comprises a printing-head nozzle.

14. The apparatus of claim 1, wherein said position-modifiable component comprises a reference surface of said printing head.

15. The apparatus of claim 1, further comprising a computer that is configured for receiving said measuring information from said receiving device and for determining calibration information based on said measuring information.

16. The apparatus of claim 1, further comprising a transfer interface for transmitting calibration information that is determined by a computer based on said measuring information provided to said computer by said receiving device.

17. The apparatus of claim 1, further comprising local storage at said printing station, said local storage being connected to a transfer interface that provides, to said local storage, calibration information that has been determined based on said measuring information.

18. The apparatus of claim 1, further comprising central storage, said central storage being connected to a plurality of transfer interfaces, each of which provides, to said central storage, calibration information that has been determined based on measuring information associated with one of a corresponding plurality of printing stations.

19. The apparatus of claim 1, further comprising a transfer interface, an actuator, and a control unit for controlling said actuator, said actuator being a constituent of said printing station, wherein said transfer interface is configured to provide calibration information directly to said control unit for causing said actuator to effect movement of said print head.

20. A method comprising calibrating a print head of a printing station, said method comprising introducing a measuring device into a container-holding device, using said measuring device, acquiring information, and calibrating said print head based on said information, wherein said information is indicative of a value, wherein said value is selected from the group consisting of a position of a position-modifiable component of said printing station having a print head, said position being adjustable by a motor and an orientation of a position-modifiable component of a printing station, said orientation being adjustable by a motor, wherein introducing a measuring device into a container-holding device comprises an act selected from the group consisting of a first act and a second act, wherein said first act comprises introducing said measuring device into a container-holding device that is provided at said printing station, and wherein said second act comprises bringing said measuring device to a receiving element provided at said printing station, said receiving element being configured to receive on behalf of a container-holding device.