Protective Film Attachment Apparatus with Dynamic Guide Block
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Solution Overview
Problem
Existing apparatuses for attaching protective films to electronic devices often fail to ensure even and accurate attachment, leading to the formation of bubbles and warping, especially on curved or flexible surfaces.
Innovation Solution
The apparatus includes a fixing tray with seating and guides for the electronic device and protective film, a base with a rail for a roller module, and a guide block system with elastic members to manage tension and ensure precise attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective film is attached to a curved or flexible surface, then the device can maintain its structural integrity, but the attachment quality deteriorates with bubbles and warping
Solution Approach 1:
The guide block is designed to be movable rather than fixed, allowing it to dynamically adjust its position and orientation in response to the protective film's tension changes during the attachment process. This dynamic adjustment enables the guide block to accommodate curved and flexible surfaces while maintaining precise film positioning, thereby resolving the contradiction between structural integrity and attachment quality.
Solution Approach 2:
The elastic member changes the physical state of the guide block by providing restoring force that enables tilting movement. This parameter change allows the guide block to adapt its orientation according to the film tension, ensuring high-precision attachment even on curved surfaces while maintaining the device's structural integrity.
2Manufacturing precision
If the protective film is stretched tightly during attachment, then the film adheres better to the surface, but the film may warp or bubble due to excessive tension
Solution Approach 1:
The elastic member acts as a feedback mechanism that automatically adjusts the guide block's position based on the film tension. When tension increases, the guide block tilts to relieve excess force; when tension decreases, the elastic member restores the guide block to its original position. This feedback control maintains optimal film tension for adhesion while preventing warping and bubbling.
Solution Approach 2:
The guide block's movable design allows it to dynamically respond to tension variations in the protective film during attachment. By tilting in response to tension changes, the guide block maintains uniform film distribution across the surface, achieving both good adhesion and film uniformity without warping or bubbles.
3Device complexity
If a fixed guide structure is used to position the protective film, then the structure is simple and stable, but it cannot adapt to tension changes during roller movement
Solution Approach 1:
The guide block is designed as a movable component that can tilt around a rotation axis, transforming a static fixed guide structure into a dynamic adaptive one. This dynamic design allows the guide block to automatically adjust its orientation in response to film tension changes during roller movement, providing tension adaptation while maintaining relatively simple structural implementation through the elastic member mechanism.
Solution Approach 2:
The elastic member enables the guide block to self-adjust its position based on the film tension without requiring external control systems. The guide block automatically tilts when tension increases and returns to its original position when tension decreases, providing adaptability through self-service while keeping the device structure simple and stable.
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
This solution enables quick and accurate attachment of protective films, reducing or eliminating bubbles and warping, and ensuring a stable bond even on complex surface geometries.
Implementation Method 1
an elastic member in the guide housing and configured to provide a restoring force in the first direction in response to movement of the guide block
Data Source
AI summary
An apparatus configured to attach a protective film to a surface of an electronic device includes a fixing tray including a seating portion at which the electronic device is seated, a base to which the fixing tray is coupled, the base including a rail extending in a first direction, and a roller module configured to move along the rail in the first direction, the roller module including a roller configured to press the surface of the electronic device seated in the fixing tray, where the fixing tray includes a first fixing guide protruding from the fixing tray in the first direction from the seating portion and configured to support a first end of the protective film, and a second fixing guide protruding from the fixing tray in a second direction that is opposite to the first direction and configured to support a second end of the protective film.