Variable Thickness Collation Folder with Dynamic Nip Adjustment

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Solution Overview

Problem

Conventional folder systems struggle to efficiently process collations of varying thicknesses, requiring manual adjustment or leading to excessive force and noise, and often causing damage to documents.

Innovation Solution

A folder system with rotatable fold rollers and nip rollers, featuring an adjustment system that selectively changes nip spacing based on predetermined collation thickness data, using a drive element and controller to ensure consistent folding without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual adjustment of rollers is used to process larger collations, then the folder can accommodate thicker collations, but the adjustment process is very time consuming and the folder cannot process smaller collations

Engineering Contradiction:

Improvecollation thickness rangeVSAvoidadjustment time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The roller spacing is made dynamically adjustable through an automated positioning system that can change the distance between rollers based on detected collation thickness, allowing the folder to adapt to different collation sizes without manual intervention and maintain continuous operation

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

A detection system measures the thickness of each collation and provides feedback to an control mechanism that automatically adjusts the roller spacing accordingly, enabling the folder to process varying collation thicknesses without manual adjustment or loss of time

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If passive, spring-biased rollers are used to adjust roller spacing, then the folder can process collations within a given thickness range, but excessive force and noise occur when processing thicker collations

Engineering Contradiction:

Improvecollation thickness accommodationVSAvoidroller force

Core Design Contradiction:

Adaptability or versatilityVSForce

Solution Approach 1:

The system detects collation thickness and uses this information to control roller positioning, applying only the necessary force for each specific thickness rather than continuous spring bias, thereby reducing excessive force on thicker collations while maintaining adaptability across the thickness range

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The roller spacing parameter is dynamically changed based on detected collation thickness, allowing the system to optimize the nip pressure for each collation size and avoid applying excessive force that would occur with fixed spring-biased settings

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If passive, spring-biased rollers are used to adjust roller spacing, then the folder can process collations within a given thickness range, but visible marks are left on the documents from the rollers

Engineering Contradiction:

Improvecollation thickness accommodationVSAvoiddocument marks

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The roller spacing and pressure parameters are dynamically adjusted based on detected collation thickness, optimizing the nip pressure for each specific thickness to minimize document marking while maintaining effective folding across the thickness range

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The detection system provides feedback on collation thickness to control the roller positioning, enabling precise control of nip pressure that adapts to each collation's specific thickness and reduces harmful marking effects on documents

Inventive Principle:

Principle #23Feedback

4Device complexity

If fixed roller spacing is used, then the folder structure is simple, but the folder cannot process collations of varying thicknesses efficiently

Engineering Contradiction:

Improveroller arrangementVSAvoidprocessing efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

A detection system measures collation thickness and provides feedback to an automated positioning mechanism that adjusts roller spacing accordingly, enabling the folder to efficiently process varying thicknesses without requiring complex manual adjustment procedures

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The folder system automatically detects and adjusts to the appropriate roller spacing for each collation without requiring external manual intervention, maintaining simple operation while achieving high processing efficiency across varying collation thicknesses

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS8328707B2Folder for variable thickness collations

Publication Date: 2012.12.11 DMT SOLUTIONS GLOBAL CORP

AI summary

A folder includes a plurality of rotatable fold rollers and a plurality of rotatable nip rollers. Each nip roller forms a nip having a nip spacing with an adjacent fold roller. The nips may include an input nip for receiving collations, a plurality of intermediate nips for delivering the collations to one of a buckle chute and a deflector to form folded collations, and an output nip for discharging the folded collations. The folder may further include an adjustment system associated with each nip roller for selectively moving the nip roller with respect to the adjacent fold roller based on predetermined collation thickness data to change the nip spacing for sequential collations.