Protective Film Processing for Plate Workpiece Edging
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Solution Overview
Problem
During the machining of narrow sides of plate-shaped workpieces with decorative layers, the protective film often tears unevenly, causing film remnants to adhere to the workpiece during edging, leading to incomplete removal and damage to the sensitive layers.
Innovation Solution
A device and method that preprocess the protective film by weakening or severing it parallel to the joining surface between the edgeband and narrow side using a protective film processing device with a separating element, such as a blade, and an air flow to ensure clean separation, preventing film interference during machining and edging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective film is used to protect the decorative layers during machining, then the decorative layers are protected from damage, but the film tears unevenly and adheres to the workpiece during edging
Solution Approach 1:
The patent applies preliminary action by preprocessing the protective film before the main machining operation. A separating element creates a separation line in the film parallel to the narrow side at a predetermined distance, ensuring the film will detach cleanly during subsequent edging operations rather than adhering to the workpiece
Solution Approach 2:
The patent segments the protective film into two functional zones: a first portion covering the decorative layers during machining, and a second portion that is separated and removed during edging. This segmentation prevents the entire film from adhering to the workpiece while maintaining protection where needed
2Object-generated harmful factors
If the protective film is severed completely before machining, then film adhesion is prevented, but the film cannot protect the decorative layers during the milling process
Solution Approach 1:
The protective film is divided into two distinct portions: a first portion that remains attached to protect the decorative layers during milling, and a second portion that is separated to prevent adhesion during edging. The separating element creates this segmentation without completely severing the film
Solution Approach 2:
Different regions of the protective film have different functions: the first portion maintains integrity for protection, while the second portion is separated for clean removal. This local differentiation of film properties resolves the contradiction between protection and adhesion prevention
3Manufacturing precision
If an air flow is used to lift the film during machining, then clean separation is facilitated, but additional equipment complexity is introduced
Solution Approach 1:
The patent employs pneumatic means (air flow) to lift the protective film during machining operations. This pneumatic action facilitates clean separation of the film from the workpiece surface, improving manufacturing precision through non-contact manipulation
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 ensures clean separation of the protective film, preventing film remnants from adhering to the workpiece, thus maintaining the integrity of the decorative layers and facilitating smooth edging without film residue on the finished panel.
Implementation Method 1
an air flow is created by the unit used, which blows lightly on the film in the area of the narrow side and lifts it in the process
Implementation Method 2
the protective film is weakened or severed by means of the protective film processing device parallel to the narrow side
Data Source
Figure 1
Figure 2
AI summary
The device for machining, in particular the narrow sides (9, 10) of plate-shaped workpieces (1), especially those made of wood or wood substitutes, comprises a machining unit, in particular a milling unit, for performing machining of the narrow sides before the application of an edge strip. The device includes a protective film processing device (4, 6, 7) which is designed and arranged to weaken or cut a protective film (2) that at least partially surrounds the workpiece (1) along a predetermined path in the area of the narrow side (9, 10) to be machined.