Clamping Arrangement for Weaving Machine Holders

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Solution Overview

Problem

Existing clamping arrangements for weaving machines, particularly for elongated components like cloth supports and temples, face challenges in easy and damage-free fitting and removal due to the need for multiple bolts and potential deformation or damage during the tilting process.

Innovation Solution

A clamping arrangement featuring a positioning slot in the holder's clamping groove that holds the clamping element in place under gravity, allowing for transverse fitting and removal of the clamping element, ensuring the screw openings remain aligned and preventing deformation or damage, with a hexagonal clamping element providing a trapezoidal shape for secure alignment and easy handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If multiple bolts are distributed over the longitudinal direction to fasten elongated components, then the clamping strength is improved, but the device complexity and ease of operation deteriorate due to the difficulty of screwing multiple bolts into the clamping element

Engineering Contradiction:
Improveclamping strengthVSAvoidease of fastening
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The clamping element is divided into multiple segments along its longitudinal direction, with each segment having its own bolt reception opening. This segmentation allows bolts to be accessed and screwed independently at different locations without requiring complex positioning or tilting operations, thus maintaining clamping strength while improving ease of operation

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The clamping element acts as an intermediary component between the elongated component and the holder. It provides a standardized interface with multiple bolt openings that simplifies the fastening process, allowing bolts to be screwed directly into the clamping element without complex alignment requirements

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the tilting movement is used to fasten the component between the clamping element and holder, then the ease of operation is improved, but the reliability deteriorates due to potential damage or deformation of elongated components and holder

Engineering Contradiction:
Improveease of fasteningVSAvoidrisk of damage
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The tilting movement operation is extracted and eliminated from the fastening process. Instead of tilting the elongated component, the clamping element is designed with bolt reception openings that allow vertical screwing operations, separating the positioning function from the fastening function and eliminating the risk of tilting-induced damage

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The design preemptively prevents the harmful tilting movement by providing a alternative fastening mechanism. The bolt reception openings are positioned and oriented such that bolts can be screwed in vertically without requiring any tilting of the component, thus preventing potential damage before it can occur

Inventive Principle:
Principle #9Preliminary anti-action

3Strength

If the clamping element is arranged beneath the component, then the clamping strength is improved, but the ease of operation deteriorates due to the difficulty of accessing bolt reception openings for elongated components

Engineering Contradiction:
Improveclamping strengthVSAvoidaccessibility of bolt openings
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The clamping element is segmented into multiple sections along its length, with each segment having independently accessible bolt reception openings. This segmentation allows workers to access and fasten bolts at different locations along the elongated component without needing to move or reposition the entire clamping element, maintaining clamping strength while improving accessibility

Inventive Principle:
Principle #1Segmentation

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

Facilitates quick and secure clamping and unclamping of elongated components without risk of deformation or damage, allowing for efficient operation in weaving machines with existing elements, and enabling easy maintenance by allowing the clamping element to be freely removed without disturbing adjacent components.

Implementation Method 1

the clamping element, after having been fitted into the positioning slot, is held in the positioning slot under the influence of gravity

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP2029801B1Clamping arrangement for clamping a component onto a holder in a weaving machine
Publication Date: 2011.04.06 PICANOL NV
  • EP2029801B1 patent drawingFigure 1
  • EP2029801B1 patent drawingFigure 2
  • EP2029801B1 patent drawingFigure 3~5

AI summary

A clamping arrangement for clamping a component (2, 79; 80) onto a holder (3; 79) in a weaving machine, comprising a clamping element (8, 82, 58, 68) and screw elements (11, 83, 105), wherein the clamping arrangement (1) comprises a positioning slot (16, 81, 43, 46, 57, 66, 67) which is provided in the longitudinal direction (47) of the clamping arrangement (1 ) in the clamping groove (14, 86) of the holder (3; 79). A method for clamping a component (2, 79; 80) onto a holder (3; 79) in a weaving machine. A weaving machine which makes use of such a clamping arrangement (1 ) and for implementing such a method.