# US 10,118,406 B2 · Carousel-type printing system

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- Number: US 10,118,406 B2
- Document ID: US10118406B2
- Status: Granted
- Kind: B2
- Application number: 15/473,923
- Filed: 2017-03-30
- Published: 2017-10-05
- Granted: 2018-11-06
- Earliest claimed: 2016-03-31
- Assignees: Heidelberger Druckmaschinen AG
- Applicants: Heidelberger Druckmaschinen AG
- Inventors: Markus Moehringer; Bernhard Buck; Alexander Weber
- Web page: https://patentgrep.com/patent/US10118406B2

## CPC

- 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)}
- B41J 2/01: Ink jet
- B41J 3/40733: {Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A carousel-type printing system includes a plurality of printing units for printing on objects and a revolver for conveying the objects from one of the printing units to another. The revolver has a plurality of spindles with retaining elements for holding the objects. A first shaft and a first motor are provided for rotating the revolver. A second shaft and a common second motor are provided for rotating the spindles. One of the two shafts is a hollow shaft and the other of the two shafts is an interior shaft in the hollow shaft. The first motor and the second motor are preferably coaxial with one another.

## Claims

### Claim 1

A carousel-type printing system, comprising:
a plurality of printing units for printing on objects;
a revolver for conveying the objects from one of said printing units to another of said printing units, said revolver having a plurality of spindles with retaining elements for holding the objects;
a first shaft and a first motor for rotating said revolver;
a second shaft and a second motor for rotating said spindles in common;
one of said two shafts being a hollow shaft and the other of said two shafts being an interior shaft in said hollow shaft; and
said first motor and said second motor being controlled to both actively rotate at the same time when said revolver advances in a timed manner.

### Claim 2 (depends on 1)

The printing system according to claim 1, wherein said first motor and said second motor are coaxial with one another.

### Claim 3 (depends on 1)

The printing system according to claim 1, wherein said first shaft is said hollow shaft and said second shaft is said interior shaft.

### Claim 4 (depends on 1)

The printing system according to claim 1, which further comprises a transmission providing a driving connection between said second shaft and said spindles.

### Claim 5 (depends on 4)

The digital printing system according to claim 4, wherein said transmission is a bevel gear mechanism.

### Claim 6 (depends on 4)

The printing system according to claim 4, wherein said transmission includes a common central wheel and gears, said gears each being disposed on a respective one of said spindles and said gears meshing with said common central wheel.

### Claim 7 (depends on 6)

The printing system according to claim 6, wherein said common central wheel is disposed on said second shaft.

### Claim 8 (depends on 1)

The printing system according to claim 1, wherein said printing units are inkjet printing units.

### Claim 9 (depends on 1)

The printing system according to claim 1, wherein said second motor is controlled to overcompensate a rotation of said spindles caused by an advance of said revolver when said revolver advances in a timed manner.