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Rotary table digital printing machine and printing unit

  • US 10,696,068 B2
  • Filed: 10/02/2018
  • Issued: 06/30/2020
  • Est. Priority Date: 10/17/2017
  • Status: Active Grant
First Claim
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1. A rotary table digital printing machine for printing on work pieces in an inkjet digital printing method, comprising a machine frame on which a work piece rotary table is rotatably mounted about a rotation axis, the work piece rotary table is provided with a plurality of work piece carriers, which are all arranged with the same angular pitch and the same distance from the rotation axis, wherein a drive unit is assigned to the work piece rotary table for providing a rotary step movement, wherein said machine frame comprises at least one holding frame designed for receiving workstations, which workstations are adapted for processing of work pieces, wherein at least one workstation is attached to the holding frame and is designed as a printing unit for printing on work pieces, wherein the printing unit comprises the following components arranged in series along an extension axis parallel to the rotation axis of the work piece rotary table:

  • a support frame supporting an inking unit;

    a printing unit interface attached to the support frame;

    a printing unit receptacle coupled to the printing unit interface;

    a print head interface attached to the support frame opposite the printing unit interface; and

    a print head module attached to the print head interface for receiving ink from the ink unit of the support frame, the print head module being adapted for dispensing ink droplets in a printing direction onto a work piece and comprising;

    a print head carrier;

    at least one print head fixed to the print head carrier; and

    a carrier interface coupled to the print head interface,wherein the printing unit receptacle, the printing unit interface, the inking unit, the print head interface, the carrier interface and the print head module arranged along the extension axis are also arranged in a row arrangement extending along the printing direction.

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