Sheet Expanding Machine With Thermal Screening for Workpiece Division
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Solution Overview
Problem
The existing expanding machines for dividing workpieces with die attach films or metal films encounter contamination issues, leading to insufficient cooling and difficulties in dividing the workpiece, resulting in undivided regions during the expansion process.
Innovation Solution
An expanding machine equipped with a cooling unit and a temperature distribution detection system, including an infrared camera, that detects abnormal temperature distributions before expansion, allowing for alarm generation and controlled expansion only when the workpiece is adequately cooled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling table is used to cool the workpiece, then cooling efficiency is improved, but contaminant deposition on the cooling table causes insufficient cooling in certain regions
Solution Approach 1:
The patent implements a temperature distribution detection unit that detects the temperature distribution of the workpiece before expansion. The control unit compares the detected temperature distribution with a reference temperature distribution to determine whether cooling is sufficient. This feedback mechanism allows the system to identify regions with insufficient cooling caused by contaminant deposition on the cooling table, and generate alarms or adjust cooling parameters accordingly, thus resolving the contradiction between cooling efficiency and contaminant-induced cooling failures.
2Productivity
If the sheet is expanded without adequate cooling, then productivity is improved, but undivided regions form in the workpiece
Solution Approach 1:
The patent performs cooling verification before the expansion process by detecting the temperature distribution of the workpiece and comparing it with a reference temperature distribution. This preliminary action ensures that the workpiece is adequately cooled before expansion begins, preventing the formation of undivided regions. The system only proceeds with expansion when the temperature distribution meets the required criteria, thus maintaining both productivity and reliability.
3Stability of the object's composition
If contaminant is held between the cooling table and sheet, then cooling uniformity deteriorates, but detecting and preventing this condition requires additional detection systems
Solution Approach 1:
The patent uses a temperature distribution detection unit to continuously monitor the cooling uniformity of the workpiece. By comparing the detected temperature distribution with a reference temperature distribution, the system can identify anomalies caused by contaminant deposition on the cooling table. This feedback mechanism provides a simple yet effective way to detect cooling uniformity issues without requiring complex detection systems, thus resolving the contradiction between cooling uniformity and device complexity.
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
Prevents failures in workpiece division by ensuring uniform cooling, thereby preventing the formation of undivided regions and ensuring successful expansion of the sheet.
Implementation Method 1
a cooling table having a contact surface configured to come into contact with the sheet clamped by the sheet clamping units and cooling the sheet
Implementation Method 2
include an infrared camera to image the workpiece
Data Source
AI summary
An expanding machine for expanding a sheet having a workpiece bonded on the sheet. The expanding machine includes an expansion mechanism configured to expand the sheet, a cooling unit that cools the workpiece bonded on the sheet, and a temperature distribution detection unit that, before expanding the sheet by the expansion mechanism, detects a temperature distribution of the workpiece cooled by the cooling unit. A method for expanding a sheet having a workpiece bonded on the sheet is also disclosed.