Exposure Tray Immobilizers for Panel Flatness and Ergonomics
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Solution Overview
Problem
Existing panel exposure machines face challenges in maintaining panel flatness due to shallow depths of field in direct imaging techniques, leading to insufficient suction force for thick panels and ergonomic issues with centering and precise positioning, which affects image alignment and operator safety.
Innovation Solution
A tray with a planar work surface and immobilizing devices that allow for precise positioning of panels of varying sizes, enabling the operator to work closer to the panel, reducing ergonomic strain and improving alignment accuracy, using a combination of fixed and movable immobilizers that adapt to panel size without requiring extensive movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional suction devices are used to press the panel against the worktable, then the panel can be held in place, but the suction force is insufficient for thick rigid panels and the devices cannot effectively grasp bent panels
Solution Approach 1:
A tray with a planar bottom surface is introduced as an intermediary component between the panel and the worktable. The tray receives the panel on its top surface and presses it against the worktable through its planar bottom surface, which contacts the worktable. This intermediary structure distributes the pressing force uniformly across the panel bottom surface, enabling reliable holding of thick rigid panels that cannot be effectively grasped by traditional suction devices alone.
2Measurement precision
If the panel is centered on the worktable to ensure proper image alignment, then the alignment precision is improved, but the operator must work at a distance from the panel causing ergonomic strain
Solution Approach 1:
The tray elevates the panel positioning reference from the worktable surface to the tray's top surface, creating a new working plane. The operator positions the panel on the tray's top surface near the edge, which is closer to the operator's station, while the tray's planar bottom surface ensures proper alignment when pressed against the worktable. This dimensional transition allows the operator to work close to the panel for ergonomic benefits while maintaining alignment precision through the tray's geometry.
3Adaptability or versatility
If immobilizing devices are made movable to adapt to different panel sizes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The immobilizing devices are designed with movable characteristics to adapt to different panel sizes. The tray structure allows flexible positioning of panels of various dimensions on its top surface, and the immobilizing devices can be adjusted accordingly. This dynamic capability enables the system to handle diverse panel sizes without requiring complex reconfiguration mechanisms, as the tray's geometry naturally accommodates different configurations.
4Measurement precision
If the panel is placed far from the edge of the worktable for centering, then the alignment is improved, but the operator experiences increased ergonomic strain and positioning difficulty
Solution Approach 1:
The tray serves as an intermediary positioning aid that resolves the conflict between precise positioning and ease of operation. The operator places the panel on the tray's top surface near the edge, which is accessible and close to the operator's station. The tray's geometry and the immobilizing devices ensure that this near-edge positioning on the tray translates to correct centered alignment when the tray is pressed against the worktable, eliminating the need for the operator to reach far across the worktable.
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
Enhances panel flatness, reduces ergonomic strain for operators, improves image positioning precision, and simplifies the design and operation of the exposure machine, allowing for higher speeds and reduced risk of musculoskeletal disorders while maintaining precise alignment.
Implementation Method 1
each being operable between a first state of immobilization in which it exerts a pressure directed towards the work surface
Implementation Method 2
suction devices which press the panel against the surface of the worktable by suction
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A tray for a panel exposure machine, and also such a machine, enabling a panel to be retained and pressed down so as to be presented facing an exposure device. The tray comprises a work surface (13) adapted to receive panels of different sizes, said work surface (13) being substantially plane and possessing first and second adjacent edges (13a, 13b) extending along substantially orthogonal first and second directions (X, Y) defining a reference corner (C); and first and second holder devices (30a, 30b) of a first type and at least a first holder device (40a) of a second type, each holder device being actuatable between a holding, first state in which it exerts pressure directed towards the work surface (13), thereby defining a holding position, and a rest, second state in which said pressure is released; a positioning device (14) arranged along at least a portion of the first edge (13a) and along at least a portion of the second edge (13b); the holder devices (30a, 30b) of the first type extend along at least a portion of the first and second edges (13a, 13b) respectively, their holding positions being fixed in a plane parallel to the work surface; the holder device (40a) of the second type is movable in a plane parallel to the work surface (13) in order to adapt its holding position as a function of the size of the panel in use.