Web Reel Joining Assembly for High-Speed Splice Accuracy
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Solution Overview
Problem
Existing automatic machines struggle to quickly and efficiently join the trailing edge of an expiring reel with the leading edge of a new reel without damaging the web material, especially in high-speed production environments where web material can be consumed rapidly, leading to potential waste and production interruptions.
Innovation Solution
A method and apparatus that utilize a gripping member with a vacuum vane to hold the leading edge of a new reel and a joining assembly with counter-rotating rollers to cut and join the trailing edge of the expiring reel to the leading edge using adhesive, ensuring continuous feeding by translating the assembly to a retracted position post-joining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the joining operation is performed at high speed to maintain continuous production, then productivity is improved, but the risk of damaging the web material increases
Solution Approach 1:
The leading edge of the new reel is prepared in advance by applying adhesive to it before the joining operation. This preliminary action allows the joining to be performed quickly at high speed without compromising the web material, as the adhesive is already in place to facilitate immediate bonding when the trailing edge is applied.
Solution Approach 2:
Adhesive material is introduced as an intermediary substance between the trailing edge of the expiring reel and the leading edge of the new reel. This intermediary enables the joining operation to proceed at high speed while protecting the web material from damage, as the adhesive provides a controlled bonding mechanism rather than direct mechanical stress.
2Loss of time
If the joining operation is performed quickly to avoid production interruptions, then loss of time is reduced, but the precision of the joining operation may deteriorate
Solution Approach 1:
The adhesive is applied to the leading edge of the new reel in advance, before the actual joining operation. This preliminary preparation ensures that when the high-speed joining occurs, the adhesive is already positioned correctly to achieve precise bonding without requiring slow, careful alignment during the joining process itself.
3Productivity
If the web material is handled frequently for reel replacement, then productivity is maintained, but the web material may be damaged or bent
Solution Approach 1:
The adhesive is applied to the leading edge of the new reel in advance, allowing the joining operation to be completed quickly without prolonged handling of the web material. This reduces the time during which the web material is vulnerable to bending or damage while maintaining continuous production.
Solution Approach 2:
The adhesive acts as an intermediary that enables secure joining with minimal handling of the web material itself. The adhesive provides the bonding function without requiring extensive manipulation of the web material edges, thereby preserving its integrity during the frequent reel replacement operations.
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 high-speed, damage-free joining of web material reels, maintaining continuous production by minimizing downtime and ensuring the integrity of the web material.
Implementation Method 1
a support member adapted to be connected to drawing means for putting its surface facing outwardly under vacuum
Data Source
AI summary
The apparatus for automatically joining reels of web material includes a joining assembly adapted to take the trailing edge of a first expiring reel of web material and to apply it on the leading edge of a second reel of web material. Said leading edge is held close to said second reel of web material by gripping means rotated, at the same angular speed, by the same second reel. Said leading edge bears, on the side facing outwardly, a label of adhesive material.