Log End Edge Gluing via Suction Roller Vacuum
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Solution Overview
Problem
Existing gluing devices for the end edge of logs in paper roll production are inefficient, often requiring specific times for glue placement, leading to productivity losses, excess glue application, and inaccuracies in distribution, with complex constructions and operations that complicate the unwinding and gluing process.
Innovation Solution
A gluing device featuring a suction roller connected to a vacuum source and a glue applicator with a radially extending glue collection element, allowing precise and rapid glue application by moving the glue picking up member between a glue container and the log's end edge, which is unwound and positioned on the suction roller, ensuring correct glue placement and unwinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional gluing devices are used to place glue on the end edge of logs, then glue application is achieved, but productivity is reduced due to required specific times for glue placement
Solution Approach 1:
The patent replaces traditional mechanical glue dispensing systems with a suction roller-based system that uses vacuum suction to automatically pick up and transfer glue. This substitution eliminates complex mechanical positioning and timing mechanisms, enabling rapid glue application without sacrificing placement accuracy, thus improving productivity while reducing time loss.
Solution Approach 2:
The patent introduces a suction roller as an intermediary element between the glue container and the log end edge. This intermediary uses vacuum suction to pick up glue and transfer it precisely to the target location, eliminating the need for direct mechanical dispensing systems and their associated timing requirements, thereby reducing glue placement time and improving productivity.
2Reliability
If traditional gluing devices are used, then glue is applied, but glue distribution is inaccurate leading to soiling or excess consumption
Solution Approach 1:
The patent replaces imprecise mechanical glue dispensing mechanisms with a suction roller system that uses vacuum suction to pick up and transfer glue. This substitution provides precise control over glue pickup and placement, ensuring glue is applied only where needed on the log end edge, thereby eliminating soiling and reducing excess glue consumption.
Solution Approach 2:
The patent applies glue locally and precisely at the specific area where it is required on the log end edge, rather than distributing it broadly. The suction roller picks up glue and places it exactly where needed, ensuring accurate local application that prevents soiling and reduces overall glue consumption by avoiding unnecessary application in non-target areas.
3Ease of manufacture
If traditional gluing devices are used, then glue placement is achieved, but device construction and operation become particularly complicated
Solution Approach 1:
The patent replaces complex mechanical gluing devices with a simpler suction roller-based system that uses vacuum suction for glue application. This substitution eliminates the need for complex mechanical positioning systems, multiple moving parts, and intricate operational mechanisms, thereby simplifying both the construction and operation of the gluing device while maintaining effective glue placement.
Solution Approach 2:
The suction roller serves multiple functions: it unwinds the end edge of the log, positions it correctly, and simultaneously picks up and transfers glue. This multi-functionality consolidates what would traditionally require separate mechanisms into a single device, greatly simplifying both construction and operation while maintaining all necessary gluing functions.
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 rapid and precise glue application, improving productivity by simplifying the device's structure and operation, ensuring correct glue distribution and unwinding, thus addressing the inefficiencies and inaccuracies of prior devices.
Implementation Method 1
a suction roller (18), connected to a vacuum source, which determines unwinding of a predetermined length of the final edge (19) on its surface
Implementation Method 2
a glue applicator (23, 24) downstream of said suction roller (18) and comprising a glue picking up member (24) in a container (23) below which can move engaged between a position immersed in the glue and a position engaged with an end edge (19) of a log (14) disposed unwound on said suction roller (18)
Data Source
AI summary
A gluing device of an end edge of a log in a machine for producing logs, wherein logs (14) delivered from being formed are fed on an inclined surface (13) disposed under an upper conveyor belt (17) towards a suction roller (18), connected to a vacuum source, the gluing device having a glue applicator (23, 24) disposed downstream of the suction roller (18), in which device the glue applicator comprises a glue picking up member (24) in a container below (23), which can move engaged between a position immersed in the glue and a position engaged with an end edge (19) of a log (14) disposed unwound on the suction roller (18).