DD154095A1 - DISPLAY DEVICE FOR BENDING OF PRINTING MACHINES - Google Patents

Abstract

The invention relates to an aligning device for sheet delivery of printing presses. Based on the task - creation of a sheet stop with extended exposure time and extended Einwirkstrecke - the sheet stop is designed as brush.

Description

VEB Combined Polygraph

"Werner Lamberz" Leipzig

7050 Leipzig Leipzig, 08.10.1980

Alignment device for sheet delivery From printing machines

field of use

The invention relates to an alignment device for sheet delivery of printing presses for edge-oriented alignment of sheets to be deposited.

Characteristic of the known technical solutions

There are aligning devices for sheet displays for edge-oriented alignment of sheets to be deposited known (DE-Gbm 1 974 052), which fixed stops for the sheet leading edge and in time with Bogenfb'rderung movable stops for the sheet trailing edge have. Laterally, the sheet to be deposited is aligned by mutually movable Bogengeradstoßer.

The disadvantage here is that the distance between the movable or the movable and the fixed stops can only be adjusted to a distance, so that the sheets with smaller size guideless and not edging in the stack

- 2 - 224964

Furthermore, there is the disadvantage that the movable stops exert a shock effect on the sheet and therefore it comes to bow deformations.

Object of the invention

The aim of the invention is to improve the sheet alignment in sheet displays.

Object of the invention

The object of the invention is to provide an alignment device with extended contact time and extended ß'inwirkstrecke on the sheet to be deposited and the sheet stack.

Essence of the invention

According to the invention the object is achieved in that the sheet stops is designed as equipped with soft bristles brushes.

In this case, the bristles in the plane or inclined to the plane of the sheet to be deposited are arranged fixed or movable to the plane of the sheet to be deposited.

The brushes are formed as around a perpendicular to the plane of the sheet to be deposited rotating brush, wherein the brush body cylindrical or conical and the brushes of the brush body are arranged in a circle or helical. The brushes are designed as endless circulating brush belt,

.3 - 2249

embodiment

The invention will be explained in more detail using an exemplary embodiment.

In the drawing shows

Figure 1: Bogenschlag - side view Figure 2: sheet stop - section of Figure 1 Figure 3: brush body

Figure 4ϊ brush body with helically arranged bristles Figure 5: brush belt

Figure 1 shows a sheet stop, which is designed as a brush 1. The bristles 1.1. the brush 1 are arranged in the plane of the sheet 3 to be deposited on the stack 2. "The direction of movement of the brush 1 corresponds to the plane of the sheet 3 to be deposited, or is inclined to the level of the sheet 3 to be deposited. Due to the length , the elasticity (softness) and the small thickness of the bristles 1.1, a part acts on the edge of the sheet 3 to be deposited (FIG. 2). Due to their elasticity and their small thickness, they are able to move the edge of the sheet over a greater distance and to follow it beyond the position of the edges below and above the sheet 3.

The adjacent bristles not acting on a sheet edge 1.1. have the opportunity to step over the edge of the bow over or under the edge of the bow. They counteract the bow curvature stabilizing.

It is also possible, the direction of movement of the sheet stop or the arrangement of the bristles 1.1. to vary so that a component of motion is achieved on the sheet 3 to be deposited. For this purpose, the direction of movement or bristle arrangement relative to the plane of the sheet 3 to be deposited is inclined. By using brushes 1 as a sheet stop the contact time and the Einwirkstrecke the same is extended. Figures 3 and 4 show sheet stops, which are formed as about an axis perpendicular to the plane of the sheet 3 to be deposited brush body 4.

2249

The brush body 4 is cylindrical or conical. The bristles 1.1 are arranged in a circular or helical manner on the brush body 4.

Due to the described arrangement and design, it is possible to give the sheet 3 to be deposited a component of movement and / or to delay or accelerate the case of the sheet 3 to be deposited.

FIG. 5 shows the sheet stop in the embodiment of the endlessly circulating brush belt 5.

Claims (10)

invention claim 1 · alignment for sheet delivery of printing presses with fixed and movable sheet stops, characterized in that the movable sheet stops as with soft bristles _Λ (1.1) equipped brushes (1) are formed. 2. alignment device according to item 1, characterized in that the brushes (1) are arranged in the plane of the sheet to be deposited (3) arranged bristles (1.1.). 3 - alignment device according to item 1, characterized in that the brushes (i) are provided with bristles (1.1.) Inclined to the plane of the sheet (3) to be deposited. 4 · alignment device according to item 1, characterized in that the sheet stops are arranged to be movable in the direction of the plane of the sheet (3) to be deposited. 5. alignment device according to item 1, characterized in that the brushes (1) as about an axis perpendicular to the plane of the sheets to be deposited (3) rotating brush body (4) are formed. 6. alignment device according to item 5, characterized in that the brush body (4) are cylindrical. 7 · alignment device according to item 5, characterized in that the brush bodies (4) are of conical design, 8. alignment device according to item 5, characterized in that the bristles (1.1.) Of the brush body (4) are arranged helically. 9. alignment device according to item 1, characterized in that the brushes (1) are designed as endlessly circulating brush belts (5), 10. alignment device according to item 1, characterized in that the brushes (1) as inclined about an axis to the plane of the sheets to be deposited (3) rotating brush body (4)