Drum Lagging Installation Apparatus for Adhesive-Free Seaming
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Solution Overview
Problem
Conventional lagging materials for cylindrical pulleys or drums in industrial machines, such as corrugator machines, require frequent replacement and adhesive-based installation, leading to significant downtime and labor due to the need for scraping off old adhesive and applying new glue, which is inefficient and time-consuming.
Innovation Solution
A seamable, double-coated lagging material with enhanced friction coefficients is developed, allowing for adhesive-free installation and removal, utilizing an installation apparatus with elongate members and engagement hooks to stretch and seam the lagging material onto the drum, ensuring secure grip without adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive bonding is used to install lagging material on drum, then the lagging material can be securely attached, but significant downtime and labor are required for removal and reinstallation
Solution Approach 1:
The invention extracts and removes the adhesive bonding step from the lagging installation process. Instead of using adhesive, the lagging material is mechanically attached through stretching and seaming, eliminating the time-consuming processes of adhesive application, curing, removal, and scraping that caused significant downtime in conventional methods
Solution Approach 2:
The lagging material is prepared in advance by forming it into a seamless tube with predetermined dimensions that match the drum. This preliminary preparation allows the material to be directly stretched and seamed onto the drum without requiring adhesive bonding during the installation process, thereby reducing downtime
2Reliability
If adhesive bonding is used to install lagging material on drum, then the lagging material can be securely attached, but extensive labor is required for scraping off old adhesive and applying new glue
Solution Approach 1:
The invention extracts and removes the adhesive bonding step from the lagging installation process. Instead of using adhesive, the lagging material is mechanically attached through stretching and seaming, eliminating the labor-intensive processes of adhesive application, curing, removal, and scraping that caused significant downtime in conventional methods
Solution Approach 2:
The lagging material is designed to be self-installing through its elastic properties. The material stretches automatically when mounted on the drum and secures itself through the seaming process without requiring adhesive application or complex bonding operations, significantly reducing labor requirements
3Ease of manufacture
If conventional lagging material is used, then simple installation is possible, but frequent replacement is required due to slippage
Solution Approach 1:
The invention changes the physical parameters of the lagging material by using elastic material with specific tensile and elongation properties. The material is stretched during installation to increase its friction coefficient and grip stability on the drum, preventing slippage while maintaining ease of installation through the stretching process
Solution Approach 2:
The lagging material is constructed as a composite structure combining fabric layers with rubber coating on both sides. This composite construction provides both the elasticity needed for simple installation and the high friction coefficient required for reliable grip stability, preventing frequent replacement due to slippage
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
The solution enables quick and efficient installation and removal of lagging materials, reducing machine downtime and labor, as the lagging material maintains grip on the drum surface without adhesives, ensuring continuous operation with improved frictional performance.
Implementation Method 1
the lagging material is stretched into a seamable position to be installed on the drum
Implementation Method 2
the lagging material surface in contact with the drum surface with a sufficient Coefficient of Friction such that no adhesive is required to keep the lagging from slipping on the drum surface
Data Source
Figure 1A
Figure 1B
Figure 2A~2B
AI summary
Apparatus for installing an on machine seamable lagging, including at least two opposed elongate members (2, 3), such that when the elongate members are drawn together, the lagging material is stretched into a seamable position to be installed on the drum. Disclosed are lagging materials for use on a driven cylindrical pulley or drum for an industrial machine. A lagging material can comprise a seaming element along the cross-machine direction (CD) of each of the opposing ends (11, 12) of the lagging material for forming a seam for seaming said opposing ends of the lagging material when brought together. A lagging material can also comprise coatings that increase the Coefficient of Friction of the lagging material when installed onto a drum to keep the lagging on the drum circumference when in operation.