Dual-Contour Web Deflection for Reliable Die-Cut Waste Peeling
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Solution Overview
Problem
Existing methods for separating and peeling off a second material web with die-cutting waste from a die-cut multilayer material web are unreliable, particularly during the manufacture of MEAs, where precise positioning of function elements is critical.
Innovation Solution
A deflecting device with two distinct deflecting contours, a wedge-shaped and a circular-arc-shaped contour, is used to separate and peel off the second material web, ensuring reliable detachment of die-cutting waste without deforming the first material web, utilizing a movable design and actuator for alternating positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single deflecting contour is used to separate and peel off the second material web, then the separation process is simple, but the die-cutting waste cannot be reliably detached without deforming the first material web
Solution Approach 1:
The deflecting device is segmented into two distinct deflecting contours: a first deflecting contour for separating and peeling off the second material web from the die-cut first material web, and a second deflecting contour for deflecting the front edge of die-cutting waste. This segmentation allows each contour to perform its specific function independently, ensuring reliable separation without deforming the first material web.
Solution Approach 2:
The deflecting device acts as an intermediary element between the second material web and the die-cutting waste. By introducing this intermediate deflecting mechanism with two specific contours, the patent enables controlled separation and waste deflection without direct contact that would cause deformation to the first material web.
2Ease of operation
If the second material web is deflected to separate from the first material web, then separation is achieved, but the die-cutting waste may deform or damage the first material web
Solution Approach 1:
The deflecting device separates the separation function from the waste deflection function through two distinct contours. The first contour handles the second material web separation while the second contour specifically manages the die-cutting waste path, preventing harmful deformation of the first material web during the ease-of-operation separation process.
3Manufacturing precision
If die-cutting is performed to create precise cutouts in the first material web, then manufacturing precision is improved, but the resulting die-cutting waste must be removed without compromising the precision work
Solution Approach 1:
The deflecting device extracts and separates the die-cutting waste from the precision-worked first material web. The second deflecting contour specifically targets and deflects the waste material away from the precise cutouts, preventing any interference or damage to the manufacturing precision achieved during die-cutting.
Solution Approach 2:
The deflecting device serves as an intermediary mechanism that handles the die-cutting waste removal process without directly contacting or compromising the precision-cut first material web. This intermediate action protects the manufacturing precision while efficiently removing waste.
Data Source
AI summary
The invention relates to a deflecting device for separating and peeling off a second material web (4) from a multilayer material web (1), comprising a die-cut first material web (2a) with die-cutting waste (2b) and the second material web (4), wherein the deflecting device (7) has a first deflecting contour (71) over which the second material web (4) is passable for separating and peeling off the second material web (4) from the die-cut first material web (2a), wherein the deflecting device (7) has a second deflecting contour (72) over which the second material web (4) is passable for deflecting a front edge (20b) of die-cutting waste (2b), and wherein the second deflecting contour (72) is not the same as the first deflecting contour (71). The invention further relates to a device and to a method for separating and peeling off a material web from a multilayer material web.