Weeding Device for Multilayer Adhesive Film Using Segmented Pneumatic Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manual removal of excess adhesive film in graphic production is labor-intensive and prone to errors, especially when dealing with irregularly shaped graphics, due to the difficulty in automating the weeding process without damaging the graphical part.
Innovation Solution
A weeding device that includes a fine weeding station with a gripper capable of precise removal of small weed parts and a rough weeding station with a cutting unit and blower system to assist in the detachment of the main weed without tearing or leaving residues, allowing for automated weeding with pneumatic and suction-based mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual weeding is used, then precision in removing weed without damaging graphics is improved, but production time and labor costs increase
Solution Approach 1:
The weeding process is divided into two distinct stages: rough weeding that removes the majority of excess film using a blade, and fine weeding that precisely removes remaining weed parts using a gripper. This segmentation allows each stage to be optimized independently, achieving both high speed and precision
Solution Approach 2:
A lifting element is introduced as an intermediary mechanism between the cutting blade and the weed. This element lifts the cut weed away from the graphic, preventing the blade from directly contacting and potentially damaging the graphic while facilitating complete weed removal
2Productivity
If automated weeding is attempted, then production time is reduced, but reliability decreases due to damage to graphical parts
Solution Approach 1:
The cutting blade performs a preliminary cutting action that severs the connection between the weed and the graphic before the main removal action. This preliminary cut allows the subsequent lifting and removal actions to affect only the severed weed, not the intact graphic
Solution Approach 2:
The automated system is segmented into distinct functional units: a cutting blade for initial separation, a lifting element for weed removal, and a gripper for fine weeding. This segmentation enables automated operation while protecting the graphic through specialized components for each task
3Productivity
If aggressive weeding methods are used to increase productivity, then production time is reduced, but manufacturing precision deteriorates due to tearing and residues
Solution Approach 1:
The removal process is segmented into rough weeding that handles the bulk material removal, and fine weeding that addresses remaining small parts. This two-stage approach ensures complete removal without tearing, as each stage is optimized for its specific function
Solution Approach 2:
The lifting element acts as an intermediary that gently elevates the cut weed away from the graphic surface. This mediation prevents the weed from being torn or leaving residues, as it is lifted cleanly rather than being pulled or scraped off
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 device enables efficient and precise automatic weeding, significantly reducing production time and labor costs while ensuring accurate removal of excess film without damaging the graphical part.
Implementation Method 1
a blower (28) which directs a jet of air towards the weed (Fs) to be removed, with the aim of lifting the same
Implementation Method 2
a suction rod (23) which holds the sheet (Ft+Fs) in position
Data Source
AI summary
The present invention concerns the field of graphic apparatuses and in particular its object is an apparatus and a relative method for the so-called “weeding” of plastic or paper films having or more self-adhesive, double sided adhesive or electrostatic layers coupled with a support liner treated with a non-stick agent. The apparatus comprises a seizing head (21) with an air blower (28).