Adjustable CIPP Feed Roller for Folding Bulky UV-Cured Liners

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Solution Overview

Problem

Existing methods for feeding UV cured CIPP liners into access openings lack configurability and are inefficient in folding the liners, making it difficult to maneuver them through smaller openings due to their bulkiness and weight.

Innovation Solution

A CIPP liner feed roller with a main roller and clamping roller, adjustable via actuators, driven by a motor and controlled by a controller, which includes accessories like folding rollers and guide rollers to facilitate the feeding and folding of CIPP liners.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If UV cured CIPP liners are used, then environmental friendliness is improved, but the liners become bulkier and heavier making them difficult to maneuver

Engineering Contradiction:
Improveenvironmental friendlinessVSAvoidliner weight
Core Design Contradiction:
Object-affected harmful factorsVSWeight of moving object

Solution Approach 1:

The feed roller system uses adjustable rollers with variable spacing that can be dynamically reconfigured based on liner thickness and access opening size. The rollers can be moved along the frame to adapt to different liner dimensions, enabling the system to handle the bulkier UV cured liners effectively while maintaining maneuverability through smaller openings.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes physical parameters by adjusting the spacing between rollers and the clamping force applied to the liner. This allows the feed mechanism to accommodate the increased thickness and weight of UV cured liners while still enabling them to be fed through access openings that would be too small for manual folding.

Inventive Principle:
Principle #35Parameter changes

2Length of moving object

If manual folding of CIPP liner is performed, then the liner can fit through smaller access openings, but the process lacks configurability and requires significant manual effort

Engineering Contradiction:
Improveliner widthVSAvoidmanual effort
Core Design Contradiction:
Length of moving objectVSEase of operation

Solution Approach 1:

The feed roller system performs the folding and feeding operations automatically without requiring manual folding by workers. The rollers self-adjust to fold the liner and feed it through the access opening, eliminating the need for significant manual effort while maintaining the ability to fit through smaller openings.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The feed roller system serves multiple functions: it feeds the liner, folds the liner, and adjusts to different liner sizes and access opening dimensions. This multi-functional capability replaces the need for separate manual folding operations and provides configurability for different work scenarios.

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

3Ease of operation

If conventional CIPP liners are used, then the liners are easier to maneuver, but they leach harmful substances into surrounding water ways

Engineering Contradiction:
ImprovemaneuverabilityVSAvoidresin leaching
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The system adjusts physical parameters such as roller spacing and applied force to accommodate the different properties of UV cured liners compared to conventional liners. This enables the safe handling and installation of environmentally friendly UV cured liners that would otherwise be difficult to maneuver through the existing infrastructure.

Inventive Principle:
Principle #35Parameter changes

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 efficient and configurable feeding and folding of CIPP liners, allowing them to be maneuvered through smaller access openings with reduced manual effort and increased precision.

Implementation Method 1

a drive unit comprising a motor configured to control the rotation of the main roller within the frame

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

The combination of the main roller and clamping roller is used to pull the CIPP liner through the CIPP liner feed roller

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS12455036B2CIPP liner feed roller
Publication Date: 2025.10.28 SUBSURFACE INC
  • US12455036B2 patent drawing
  • US12455036B2 patent drawing
  • US12455036B2 patent drawing

AI summary

A CIPP liner feed roller for manipulating and feeding CIPP liner by pulling CIPP liner from a liner source and feeding it to where it is needed. The CIPP liner feed roller generally includes a main roller attached to a frame, a clamping roller attached to the frame and configured to be in parallel with the main roller, wherein the distance between the clamping roller and the main roller can be adjusted using one or more actuators, a drive unit comprising a motor configured to control the rotation of the main roller within the frame, a controller coupled to the drive unit and the one or more actuators, wherein the controller is configured to control the rotation of the main roller and the distance between the clamping roller and the main roller, and a support beam attached the frame and configured to be in parallel with the main roller.