Sheet Expanding Apparatus for Wafer Handling
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Solution Overview
Problem
Existing sheet expanding apparatuses require manual cutting and adherence of sheets to workpieces, which is laborious and prone to damaging the workpiece, especially when handling wafers with start points of division.
Innovation Solution
A sheet expanding apparatus with a holding unit, adhering mechanism, expanding mechanism, and transfer unit that adheres, cuts, and clamps a belt-shaped sheet to a plate-shaped body, allowing for efficient expansion and transfer without breaking or damaging the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual cutting and adherence of sheets to workpieces is performed, then the sheet expanding apparatus can process workpieces, but the workability is reduced and the risk of damaging the workpiece increases
Solution Approach 1:
The apparatus divides the sheet processing into distinct functional modules: a sheet supply unit that feeds sheets from a roll, a cutting unit that automatically cuts sheets to size, and an adhering unit that applies sheets to workpieces. This segmentation automates the previously manual process, improving workability while reducing damage risk through consistent, controlled operations.
Solution Approach 2:
The apparatus performs self-service by automatically cutting and adhering sheets without operator intervention. The cutting unit trims sheets to the required size, and the adhering unit applies them to workpieces using controlled pressure and positioning, eliminating manual handling that causes damage and improving overall productivity.
2Ease of operation
If sheets are cut and adhered manually, then the apparatus can accommodate sheet processing, but the operation becomes laborious and time-consuming
Solution Approach 1:
The sheet supply unit continuously feeds sheets from a roll through the cutting and adhering units without interruption. The apparatus maintains continuous operation, eliminating the repetitive manual tasks of cutting and adhering individual sheets, thereby reducing operation complexity and time loss.
Solution Approach 2:
The cutting unit performs preliminary action by pre-cutting sheets to the required size before adhering them to workpieces. This preliminary preparation is done automatically and continuously, simplifying the overall operation and reducing the time required for sheet preparation during the adhering process.
3Reliability
If workpieces are handled manually for sheet adherence, then the sheet can be applied to the workpiece, but the workpiece is liable to be broken or damaged
Solution Approach 1:
The apparatus introduces an intermediary adhering unit that acts as a mediator between the sheet and the workpiece. This unit uses controlled pressure application and positioning mechanisms to apply sheets without direct manual handling of the workpiece, thereby protecting workpiece integrity while managing the complexity through a dedicated intermediate device.
Solution Approach 2:
The apparatus replaces manual mechanical handling with an automated adhering mechanism that uses controlled pressure and positioning systems. This substitution eliminates the risk of workpiece damage from manual handling while introducing a structured mechanical system designed specifically to protect workpiece integrity during the adhering process.
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 workability by automating the sheet adherence and expansion process, reducing the risk of damaging the workpiece during handling and maintaining consistent tension to prevent wrinkling.
Implementation Method 1
an adhering mechanism including an adhering roller by which a belt-shaped sheet wound in a roll form is adhered to the plate-shaped body held by the holding unit
Data Source
AI summary
A sheet expanding apparatus includes: an adhering mechanism including an adhering roller by which a belt-shaped sheet wound in a roll form is adhered to a plate-shaped body, and a cutter adapted to cut the belt-shaped sheet into a rectangular sheet larger in size than the plate-shaped body; an expanding mechanism adapted to expand the rectangular sheet in a first direction and a second direction; and a transfer unit by which the plate-shaped body having the rectangular sheet adhered thereto is transferred to the expanding mechanism. The belt-shaped sheet can be supplied to the sheet expanding apparatus in the state of being wound in the roll form, and the plate-shaped body can be transferred by the transfer unit and the rectangular sheet can be expanded, after the belt-shaped sheet is adhered to the plate-shaped body and is cut into the rectangular sheet in the sheet expanding apparatus.