Carding Holder Intermediate Carrier Adjustment Mechanism

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Solution Overview

Problem

Existing carding carrier devices for web-forming machines are limited in their ability to adjust the carding gap across the working width and produce webs of varying thickness, as they typically rely on fixed configurations and two-part adjustments, restricting flexibility and versatility.

Innovation Solution

A device comprising an exchangeable carding strip, an intermediate carrier, and a main carrier, where the intermediate carrier is adjustably attached to the main carrier, allowing for multiple settings across the working width and enabling adjustable carding gap and element orientation, using a screw/spring system for precise adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed two-part carding carrier construction is used, then the device structure is simple, but the carding gap adjustment flexibility across the working width is limited

Engineering Contradiction:

Improvecarding gap adjustment flexibilityVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The carding carrier is divided into three functional segments: a main carrier (steel) providing structural support, an intermediate carrier (aluminum) enabling adjustment, and exchangeable carding strips. This segmentation allows the intermediate carrier to be adjusted independently across the working width while the main carrier remains fixed, achieving flexible carding gap adjustment without requiring complete redesign of the entire device structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The intermediate carrier is designed with adjustable positioning mechanisms (screws, springs, or cam mechanisms) that allow dynamic adjustment of its position relative to the main carrier. This enables the carding gap to be dynamically adjusted across different positions along the working width, transforming a static structure into a dynamically adaptable system.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If only two-part construction is used, then manufacturing is simpler, but the ability to produce webs of varying thickness is restricted

Engineering Contradiction:

Improveweb thickness variation capabilityVSAvoidmanufacturing simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The three-part construction separates the structural function (main carrier in steel) from the adjustment function (intermediate carrier in aluminum) and the carding function (exchangeable strips). This allows each component to be optimized for its specific purpose while maintaining overall manufacturing feasibility through modular assembly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adjustable intermediate carrier enables changing the spatial parameters of the carding elements relative to the drum surface. By adjusting the position and orientation of the intermediate carrier, the carding gap and element angle can be modified, enabling production of webs with constant or variable thickness according to different material requirements.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If the intermediate carrier has high flexural strength like the main carrier, then structural stability is improved, but adjustability and flexibility are reduced

Engineering Contradiction:

ImproveadjustabilityVSAvoidflexural strength

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

Different materials with different mechanical properties are assigned to different components based on their functional requirements. The main carrier uses high-strength steel for structural stability, while the intermediate carrier uses lighter aluminum that provides sufficient strength for support but allows easier adjustment and positioning.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system uses a composite construction combining steel (main carrier) and aluminum (intermediate carrier) materials. This composite approach leverages the high strength of steel where structural integrity is critical and the lighter, more adjustable aluminum where flexibility and adjustability are prioritized, achieving an optimal balance of conflicting properties.

Inventive Principle:

Principle #40Composite materials

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 production of webs with both constant and variable thicknesses by allowing for flexible carding gap adjustments and carding element orientation, enhancing manufacturing efficiency and adaptability for large working widths.

Implementation Method 1

The adjustment function is most easily implemented using an adjusting screw/spring system.

Methodology Applied

Scientific EffectSpring: Spring

Data Source

PatentEP2562297B1Carding holder

Publication Date: 2017.01.11 HERGETH HUBERT

AI summary

The device has a carding strip fastened to an intermediate carrier (7). The intermediate carrier is adjustably mounted on a main carrier (4). The main carrier is fastened to a machine frame, side signs (3) and arcs. Fastening elements (5) connect the intermediate carrier and the main carrier, and are arranged over working width of a carding cylinder (2) and the intermediate carrier. Two series of adjustment elements are extended in parallel over the working width. The intermediate carrier is tiltably adjusted at a longitudinal axis and made from aluminum or composite material.