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Buckle folding unit and sheet-fed folding machine including buckle folding unit

A folding mechanism and barrier-type technology, applied in the field of sheet folders, can solve the problems of lower quality folding or refolding, difficult guidance, and sheets cannot be reliably conveyed, and achieve the effect of improving folding quality

Inactive Publication Date: 2017-01-25
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The guidance of the sheets during the introduction and export of the sheets in the folding mechanism, in particular in the folding fence, is particularly difficult here
[0009] A disadvantage of the aforementioned folding mechanisms is that, especially at high speeds, the sheets may not be transported reliably through the folding mechanism and into the subsequent folding mechanism, and, when creases are introduced, the sheets may be damaged or lead to such as reduced quality folding or refolding

Method used

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  • Buckle folding unit and sheet-fed folding machine including buckle folding unit
  • Buckle folding unit and sheet-fed folding machine including buckle folding unit
  • Buckle folding unit and sheet-fed folding machine including buckle folding unit

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] figure 1 Shown is a sheet folder 100 with a sheet feeder 10, a supply station 20 with an orientation table, a fence folding station 30 with two fence folding mechanisms 30.1 and 30.2, and a signature take-up 50 . In the area of ​​the sheet feeder 10 the individual sheets 1000 are separated from the sheet stack 1001 and transferred to a supply station 20 with an orientation station. The individual sheets 1000 are supplied from the supply station 20 along the sheet transport direction T to the fence folding station 30 . In this case, the sheet 1000 can be processed by the front cutter shaft 31 in preparation for the folding. The actual processing takes place in the fence folding station 30 , ie the folding of the sheet 1000 takes place by means of the folding fence 33 cooperating with the folding rollers 32 . The structure of the barrier folding station 30 is described further below with reference to the other figures. The sheets 1000 folded in the barrier folding sta...

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Abstract

The invention relates to a buckle folding unit (30.1,30.2) and a sheet-fed folding machine (100) including the buckle folding unit. A buckle folding unit (30.1,30.2) for sheets (1000) includes a buckle plate (33), three rollers (32.1, 32.2, 32.3) that form a transport roller pair (32.1, 32.2) and a folding roller pair(32.2, 32.3), and a blown-air nozzle(40) for guiding the sheets (1000). The at least one blown-air nozzle (40) emits a blown-air jet (42) in a direction radial to a common roller (32.2) of the transport roller pair and the folding roller pair. The air jet places the sheet (1000) against the surface of the common roller (32.2) and guides it into a nip of the folding roller pair in a defined way, advantageously resulting in an improved quality of the fold.

Description

technical field [0001] The invention relates to a fence folding mechanism with the features of claim 1 and to a sheet folder according to claim 7 with such a fence folding mechanism. Background technique [0002] Bar folding machines and knife folding machines are known from the prior art. Fence folding stations combined with knife folding stations are popular as hybrid folding machines. Here, parallel creases are folded in the fence folding mechanism and crossing creases are folded in the subsequent knife folding mechanism. [0003] The sheets pass through at least the following stations along the conveying direction in the fence folder: feeder, transfer table, fence folding mechanism, receiver. [0004] DE 10 2004 041 471 A1 discloses the construction of a fence folding machine with several fence folding mechanisms. In this case, the fence-like folding mechanisms each consist of a folding fence and three folding rollers arranged to form two folding roller pairs. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H45/28B65H45/16B65H45/30
CPCB65H45/16B65H45/28B65H45/30B65H2701/19B65H2301/4461B65H2406/122B65H45/142
Inventor M·豪普特-特劳
Owner HEIDELBERGER DRUCKMASCHINEN AG
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