Web Winding Spindle Transfer via Pressure Assist Device
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Solution Overview
Problem
Existing web winding processes face challenges in consistently applying force to the web material during the transfer from a continuous belt to a winding spindle, leading to inconsistent force distribution and potential sheet elongation or embossment distortion, which affects product quality and reliability.
Innovation Solution
The implementation of a pressure assist device adjacent to the conveyor belt, which adjusts its position relative to the winding spindle to apply a compressive force and control the speed profile, ensuring precise force application and uniform contact, thereby enhancing the winding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a continuous elastic belt is used to convey web material, then the belt can conform to the outer surface of the web being wound, but the force applied to the web material and winding spindle per unit area is reduced
Solution Approach 1:
A pressure assist device is introduced as an intermediary element between the continuous belt and the winding spindle. This device concentrates and transmits force through a localized contact point (nip point) to the web material and spindle surface, overcoming the force dispersion issue caused by belt elasticity while maintaining the belt's conformability to the web surface.
Solution Approach 2:
The pressure assist device creates a localized zone of concentrated force application at the transfer point between the belt and spindle. Instead of distributing force uniformly across the entire belt-web contact area, the system focuses force at a specific location (the nip point) where it is most needed for effective web transfer and spindle engagement.
2Reliability
If force is dispersed over a large area by the continuous belt, then web material damage is reduced, but inconsistent force application occurs during web transfer
Solution Approach 1:
The pressure assist device serves as a mediating element that bridges the continuous belt and winding spindle. It receives force from the belt and concentrates it into a controlled, consistent application at the transfer point, ensuring reliable and uniform force delivery during web material transfer while preserving web integrity through the controlled nature of force application.
Solution Approach 2:
The system changes the force application parameters by introducing a localized pressure assist device that transforms the distributed force profile of the continuous belt into a concentrated, consistent force pattern at the transfer point. This parameter transformation maintains web integrity while achieving the force consistency needed for reliable web transfer.
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
This solution improves the consistency of force application, reduces sheet elongation and embossment distortion, and increases the reliability of the winding process, resulting in higher quality final products with fewer feed breaks and reduced manufacturing costs.
Implementation Method 1
adjusting a position of at least one of the conveyor belt and the pressure assist device relative to the winding spindle in order to provide a compressive force to the surface of the winding spindle by the conveyor belt
Implementation Method 2
transferred to the web material disposed upon the conveyor belt
Data Source
AI summary
A method for rewinding a web material is disclosed. The method comprises the steps of: a) providing a conveyor belt having opposed first and second surfaces; b) providing a pressure assist device proximate to the second surface of the conveyor belt; c) disposing the web material on the first surface of the conveyor belt; d) providing at least one winding spindle having a speed profile proximate to the web material disposed upon the first surface of the conveyor belt; e) adjusting a position of at least one of the conveyor belt and the pressure assist device relative to the winding spindle to provide a compressive force to the surface of the winding spindle by the conveyor belt; f) adjusting a speed of the at least one winding spindle according to the speed profile; and, g) transferring the web material to the at least one winding spindle from the conveyor belt.