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Device for transporting sheets of printing material

A technology for printing materials and sheets, applied in the field of equipment conveyed by printing stations, can solve the problems of printing image interference, small support width, insufficient accuracy, etc., and achieve the effect of reducing wear and tear

Inactive Publication Date: 2020-03-20
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem can arise that short sheet transport sections are not guided with sufficient precision due to their only small support width (distance between two supporting running rollers) and have other, interfering, interfering degrees of freedom
[0007] In the above-mentioned four prior art documents, the problem may also arise that the components acting as sheet guides are not moved with sufficient precision to achieve high-precision ink printing and can be disturbed by very small movements (such as small , undesired rotation) causing disturbances in the printed image

Method used

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  • Device for transporting sheets of printing material
  • Device for transporting sheets of printing material
  • Device for transporting sheets of printing material

Examples

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Embodiment Construction

[0033] figure 1 A front view is shown of a preferred embodiment of a device 1 according to the invention for transporting sheets 2 of printing material such as paper, cardboard or plastic film. The device 1 may be part of a (not shown) printing press, in particular with a plurality of ink printing heads 18 (see Figure 5 ) part of an industrial ink printing machine.

[0034] The device 1 comprises a conveying path 3 , in particular a closed (“endless loop”) conveying path, for example in the form of an ellipse-like combination of two semicircles and a rectangle.

[0035] The conveying path 3 preferably comprises at least one straight conveying section 3a and at least one curved (preferably semicircular) conveying section 3b, for example forming a closed conveying path in the sequence 3a, 3b, 3a, 3b.

[0036] At least one sheet transport section 4 , but preferably (as shown) a plurality of sheet transport sections 4 moves along the transport path 3 . In this case, a pluralit...

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Abstract

The invention relates to a device for transporting sheets (2) of printing material at least along a printing station (18) with a plurality of ink print heads (18a-d), comprising a transport path (3) with at least one straight transport section (3a) and at least one curved one Transport section (3b) and with at least one guide rail (8, 8a, 8a ') along the transport sections and comprising at leastone sheet transport segment (4) of a length L, measured in the direction (S) of the transport path, with at least three rolling or sliding Guide elements (7, 7a, 7a ') which roll or slide in the straight transport section on the guide rail, two of the guide elements (7a) being arranged outside the length L. The invention makes it possible to move sheet transport segments with high precision and, in particular, to prevent undesired rotation of the sheet transport segments.

Description

technical field [0001] The invention relates to a device for transporting sheets of printing material at least along a printing station with a plurality of ink printing heads, having the features of claim 1 . [0002] The technical field to which the present invention pertains is that of the graphics industry, and here in particular the field of precise transport of flat printing materials such as sheets of paper, cardboard or plastic film. Background technique [0003] German patent application DE 10 2018 208 796, which has not yet been published by the applicant, discloses a device for conveying sheets of printing material at least along a printing station with a plurality of ink printing heads. The device comprises a closed conveying path on which the sheet conveying section moves. In this case, the movement (or drive) of the sheet transport sections in the region of the ink print head takes place by means of rotatable threaded spindles. In order to achieve high-precisi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J13/08
CPCB41J13/08B41J11/06B65H5/04B65H5/085B65H2404/311B65H2404/315
Inventor A·米勒
Owner HEIDELBERGER DRUCKMASCHINEN AG
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