Printing Form Removal Carriage with Adjustable Roller Bar

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Solution Overview

Problem

Existing devices fail to reliably and safely remove large-format printing forms from forme cylinders in printing units, particularly due to the complexity and size of the forms, which can lead to damage during handling.

Innovation Solution

A device with a roller bar and guide element system that supports the printing form against the forme cylinder, allowing for controlled mounting and dismounting using a carriage with suction grippers and adjustable pressing elements, ensuring secure and precise handling of large-format forms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing devices are used to remove printing forms, then the removal process can be performed, but large-format printing forms cannot be reliably and safely removed without risk of damage

Engineering Contradiction:

Improvereliability of removalVSAvoiddamage to printing form

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A roller bar with pressing elements acts as an intermediary device between the printing form and the removal mechanism. The pressing elements distribute force evenly across the printing form surface, preventing concentrated stress points that could cause damage. The roller bar supports the printing form during the entire removal process, providing controlled and uniform pressure that ensures reliable and safe removal of large-format forms.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If multiple rollers are used to support the printing form, then the printing form can be supported against gravity, but the complexity of the device increases

Engineering Contradiction:

Improvesupport stabilityVSAvoiddevice complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The roller bar is segmented into multiple pressing elements that can be independently adjusted along the roller bar. This segmentation allows each pressing element to be positioned optimally to support different sections of the printing form, providing stable support against gravity. The modular design of adjustable pressing elements maintains stability while avoiding the complexity of a fully rigid multi-roller system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pressing elements on the roller bar are made adjustable and movable, allowing the device to adapt dynamically to different printing form sizes and shapes. This dynamic capability provides stable support for various configurations without requiring a complex fixed structure, as the roller bar can be reconfigured for each specific printing form being handled.

Inventive Principle:

Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables reliable and safe removal of large-format printing forms from forme cylinders, preventing damage and ensuring accurate alignment and registration during the process.

Implementation Method 1

a carriage with suction grippers

Methodology Applied

Scientific EffectSuction: Suction

Data Source

PatentEP2415604B1Device for removing a printing plate from a form cylinder of a printing unit

Publication Date: 2012.08.22 KOENIG & BAUER AG

Figure 1
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Figure 4

AI summary

The device has a carriage that is movable from a position near a mold cylinder (02) after a position distant from the mold cylinder along a travel path. The rollers (101) are engaged or adjusted by a controllable adjusting unit at a support surface of a printing mold (16) that is discharged from mold cylinder.