Sheet feeder and method for forming a flake flow

A sheet and refill technology, applied in the field of dividing sheets into single sheets, can solve problems such as damage, transfer, and sheets cannot be reliably separated from each other, and achieve low energy consumption, good suction effect, and simple controllability. Effect

Active Publication Date: 2017-05-24
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Despite the implementation of the described measures, it can occur, in particular at increased machine speeds, that the sheets in the sheet stack cannot be separated reliably from one another or can be damaged during separation.
It can also happen that the sheets are not transferred cleanly into the scaly sheet flow, for example if the suction action on the sheets is too late

Method used

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  • Sheet feeder and method for forming a flake flow
  • Sheet feeder and method for forming a flake flow
  • Sheet feeder and method for forming a flake flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] figure 1shows the method for separating the sheets 6 from the sheet stack 6.1 and for transferring the separated sheets 6 into the (tail press) lamella sheet flow for the (tail press) lamina The sheet 6 is fed further along the sheet travel direction B to the sheet feeder 1 of the subsequently arranged sheet processing machine. Above the sheet stack 6 . 1 are arranged a suction and transport unit 60 as well as a sheet detection unit 61 or 61 , 62 . Both the sheet detection units 61 , 62 and the suction and conveying unit 60 are connected to the machine control 15 using data transmission technology. As soon as the uppermost sheet 6 of the sheet stack 6 . 1 has been sucked by the suction elements of the suction and transport unit 60 , the position of the sheet 6 is detected by the sheet detection units 61 , 62 . The measurement results of the sheet detection units 61 , 62 are transmitted to the machine control 15 and evaluated there. A setpoint-actual comparison takes ...

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PUM

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Abstract

The feeder (1) has sheet detecting units (61) detecting one or multiple edges (6.2) of an upper sheet (6). A mark is printed on the upper sheet or an edge in a print image of the upper sheet. A control unit (15) controls a suction and transport unit (60). The sheet detecting units and the suction and transport unit are arranged over a stack (6.1) and data-communicatively connected with the control unit. The suction and transport unit is controllable by the control unit such that underlapped sheet current with defined underlapped flaking is produced. An independent claim is also included for a method for separating a sheet from a stack and providing the separated sheet for a sheet processing machine.

Description

technical field [0001] The invention relates to a sheet feeder for a sheet processing machine and a method for separating sheets and a further method for separating sheets. Background technique [0002] The lifting of the sheets in the sheet feeder by means of the corresponding first sheet by means of suitable lifting and / or conveying mechanisms, for example by means of a suction device and / or a suction wheel, has been known from the prior art for a long time. The stack is separated from the sheet stack and the sheets are fed separately to a sheet processing machine, such as a printing press, a sheet folder or a die-cutter. In this case, the sheets can be supplied to the sheet processing machine either spaced apart or stacked. [0003] Such a sheet feeder is described in DE OS 36 09 550 . In this feeder, the blowing nozzles for pre-loosening the sheet stack are arranged in a row so that they can be adjusted next to each other and at the level of the uppermost sheet in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H3/08B65H7/08B65H7/10B65H7/14B65H7/20B65H5/24
CPCB65H1/14B65H3/128B65H5/24B65H7/14B65H2220/02B65H2301/444B65H2511/512B65H2701/1313B65H2801/21B65H2801/42
Inventor A·米勒B·沃尔夫
Owner HEIDELBERGER DRUCKMASCHINEN AG
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