Replaceable Y-Shaped Elastic Cleaning Lip Mount for Textile Rollers

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Solution Overview

Problem

Existing cleaning systems for textile machine rollers require replacement of both the support means and the cleaning lip when worn, leading to inefficiencies and resource wastage, and the fixation of cleaning strips is problematic and space-consuming.

Innovation Solution

A Y-shaped cleaning lip with a wiping edge and mounting legs that securely attach to a support element, allowing easy replacement and reusability, featuring webs and undercuts for stability and retention, and grooves for marking and bending flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the cleaning lip is form-lockingly mounted on the support means in an injection molding process, then the cleaning lip is securely fixed, but both the support means and the lip must be replaced when the lip becomes worn

Engineering Contradiction:
Improvesecure fixation of cleaning lipVSAvoidreplacement complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The cleaning system is divided into separable components: the support means and the cleaning lip. The mounting element on the cleaning lip can be detached from the support means, allowing the cleaning lip to be replaced independently without replacing the entire support structure. This segmentation enables modular replacement where only the worn component needs to be changed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support means is designed to be reusable and retained in the system, while only the cleaning lip is discarded and replaced when worn. This principle allows recovery and continued use of the valuable support structure, reducing waste and replacement costs by separating the disposable cleaning element from the durable support component.

Inventive Principle:
Principle #34Discarding and recovering

2Ease of repair

If a detachable connection with a groove and complementary cross section is used, then the cleaning strip can be replaced, but a large amount of space is required laterally to pull the cleaning strip out

Engineering Contradiction:
Improvereplaceability of cleaning stripVSAvoidlateral space requirement
Core Design Contradiction:
Ease of repairVSArea of stationary object

Solution Approach 1:

Instead of requiring lateral movement to detach the cleaning lip, the mounting element is designed to be pulled off in the longitudinal direction of the support means. This inversion of the detachment direction eliminates the need for large lateral clearance, allowing replacement in confined spaces where lateral movement would be restricted.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The detachment operation is shifted from the lateral dimension to the longitudinal dimension. By designing the mounting element to be removable along the length of the support means rather than perpendicular to it, the solution utilizes a different spatial dimension for the replacement operation, reducing lateral space requirements.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Reliability

If the cleaning lip is designed Y-shaped with legs encompassing the support element, then stable mounting is achieved, but the structure becomes more complex

Engineering Contradiction:
Improvemounting stabilityVSAvoidcleaning lip structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The Y-shaped cleaning lip is designed with legs that encompass and nest around the support element. The mounting element's geometry allows it to wrap around the support means, creating a nested configuration where the cleaning lip encloses the support structure. This nesting provides mechanical interlocking and stable mounting while maintaining a relatively simple overall form.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentUS12421632B2Elastic cleaning lip, support element, and cleaning unit
Publication Date: 2025.09.23 MASCHINENFABRIK RIETER AG
  • US12421632B2 patent drawing
  • US12421632B2 patent drawing
  • US12421632B2 patent drawing

AI summary

An elastic cleaning lip for cleaning a rotating roller of a drafting system of a textile machine includes a wiping edge configured at one longitudinal side of the cleaning lip. A mounting element is at an opposite longitudinal side of the cleaning lip and is configured to mount to a support element. The cleaning lip has a Y-shaped cross section having a stem and two essentially parallel legs, wherein the wiping edge is arranged at an end of the stem and the two legs form the mounting element for a form-locking mounting of the cleaning lip to the support element. The support element includes retainers at opposite longitudinal ends thereof and a mounting strip having lateral faces and top and bottom end faces arranged between the retainers. The lateral faces and the top end face are configured for the form-locking mounting with the cleaning lip.