Spring-Loaded Transport Channel for Book Blocks

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Solution Overview

Problem

Existing transport devices for book blocks in print finishing processes require adjustments and idle cycles for different block thicknesses, leading to complex construction, time-consuming retooling, and inefficient production, especially for small runs.

Innovation Solution

A transport device with a resilient device and freely rotating rollers allows for the upright transport of book blocks with varying thicknesses without adjusting the transport channel, eliminating the need for idle cycles and enabling continuous production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the transport channel is adjusted for different block thicknesses, then the transport device can accommodate varying formats, but adjustment time and idle cycles increase

Engineering Contradiction:
Improveadaptability to different block thicknessesVSAvoidadjustment time and idle cycles
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The transport channel incorporates movable guide elements that can dynamically adjust their position to accommodate different book block thicknesses. These guide elements are spring-loaded or motorized, allowing them to automatically adapt to varying formats without requiring complete channel adjustment or idle cycles between print jobs.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the physical parameters of the transport channel by introducing elastic elements and movable guides that can alter their position or configuration. This allows the channel to adapt to different block thicknesses through parameter changes rather than requiring structural reconfiguration or idle adjustment periods.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If the transport channel structure is simplified to eliminate adjustments, then productivity increases, but the ability to handle different formats may be compromised

Engineering Contradiction:
Improvecontinuous operation without idle cyclesVSAvoidhandling of different block formats
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The transport channel is designed with universal components that can handle multiple formats. The movable guide elements and elastic components serve multiple functions: they guide blocks of varying thicknesses, provide cushioning, and maintain consistent transport pressure, all within a single fixed channel structure that requires no adjustment between jobs.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The transport channel employs self-adjusting mechanisms where spring-loaded or motorized guide elements automatically adapt to different block thicknesses without external intervention. The system serves itself by detecting the block format and adjusting the guide positions autonomously, eliminating the need for operator adjustment or idle cycles.

Inventive Principle:
Principle #25Self-service

3Reliability

If elastic elements are used to cushion book blocks, then damage is prevented, but friction increases unless rollers are introduced

Engineering Contradiction:
Improveprotection of book blocksVSAvoidfriction between elastic element and book block
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

Freely rotating rollers are introduced as intermediary elements between the elastic cushioning components and the book blocks. These rollers mediate the interaction by providing a low-friction rolling contact surface, allowing the elastic elements to maintain their cushioning function while minimizing harmful friction forces on the book block surfaces.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention substitutes sliding friction with rolling friction by introducing rollers. This mechanical substitution replaces the direct contact between elastic elements and book blocks with a roller-mediated contact system, significantly reducing friction while preserving the cushioning and protection functions of the elastic components.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 the uninterrupted transport of book blocks with different formats, reducing production downtime and improving efficiency by maintaining continuous operation without channel adjustments, thus optimizing the transport process in print finishing devices.

Implementation Method 1

at least one spring-loaded device (9a, 9b, 9c) with a freely rotating roller (12) is attached to the adjustable channel wall (4)

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the freely rotating rollers enable a reduction in friction between an elastic element and a book block being transported past it

Methodology Applied
Scientific EffectRolling friction: Friction

Data Source

PatentEP3216619B1Device and method for transporting book blocks
Publication Date: 2019.07.03 MULLER MARTINI HLDG
  • EP3216619B1 patent drawingFigure 1~2c
  • EP3216619B1 patent drawingFigure 3a~3b
  • EP3216619B1 patent drawingFigure 4

AI summary

A transport device (30) for the upright transport of successive book blocks (11a, 11b, 11c, 11d) in a transport direction (10) with a transport device (6) and a transport channel (1) has a transport channel (1) with a channel floor (21) and a fixed channel wall (3). The transport channel (1) has at least one spring-loaded device (9a, 9b, 9c) for pressing the book blocks (11a, 11b, 11c, 11d) at least partially against the fixed channel wall (3).