Silicon Wafer Frame Unlocking Mechanism for Automated Release

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Solution Overview

Problem

The manual unlocking of the material frame in silicon wafer transport is labor-intensive, time-consuming, and requires constant force, making it challenging for workers to efficiently release silicon wafers during the separation process.

Innovation Solution

A material frame unlocking device with a clamping mechanism and an unlocking mechanism, where the clamping mechanism includes two clamping rods with connecting rods and an elastic assembly, and the unlocking mechanism uses a pushing assembly with racks, rotating gears, and an air cylinder to automate the opening of the clamping rods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual unlocking of the material frame is performed, then the clamping mechanism can be released, but it requires constant force support and takes a lot of time

Engineering Contradiction:
Improveunlocking operationVSAvoidunlocking time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the manual mechanical unlocking operation with an automated pushing assembly that includes a piston, pushing block, and linkage mechanism. The piston automatically pushes the unlocking block to rotate the connecting rod, which in turn opens the clamping rods, eliminating the need for manual force application and significantly reducing unlocking time

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The unlocking mechanism is designed to automatically perform the unlocking function without requiring external manual intervention. The elastic assembly stores energy and the pushing assembly automatically activates it through the linkage mechanism, making the system self-sufficient for the unlocking operation

Inventive Principle:
Principle #25Self-service

2Ease of operation

If manual unlocking of the material frame is performed, then the silicon wafer can be released, but it requires precise positioning which is difficult to achieve

Engineering Contradiction:
Improvepositioning accuracyVSAvoidmanual operation complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces manual positioning and unlocking with an automated mechanical system. The piston-driven pushing assembly precisely controls the rotation of the connecting rod through the linkage mechanism, ensuring accurate positioning of the clamping rods without requiring manual dexterity or precise human positioning

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The pushing block and linkage mechanism serve as intermediaries between the piston and the clamping rods. These intermediary components translate the linear motion of the piston into the precise rotational motion needed to open the clamping rods, eliminating the need for direct manual positioning

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If automated unlocking mechanism is implemented, then unlocking time is reduced, but the device structure becomes more complex

Engineering Contradiction:
Improveunlocking speedVSAvoidmechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The unlocking mechanism is divided into distinct functional modules: the elastic assembly (with spring and movable rod), the connecting rod with hinge point, the clamping rods, and the pushing assembly (with piston and pushing block). This segmentation allows each component to perform a specific function independently, making the overall complex system manageable and maintainable while achieving fast automated unlocking

Inventive Principle:
Principle #1Segmentation

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 automation of the unlocking process significantly reduces the time and effort required for workers, enhancing efficiency and safety by eliminating the need for manual force and positioning.

Implementation Method 1

an elastic assembly arranged at one end of the connecting rod away from respective clamping rod, when the elastic assembly is controlled by the unlocking mechanism, the connecting rod rotates around the hinge point

Methodology Applied
Scientific EffectElastic potential energy storage and release: Spring

Implementation Method 2

the driver includes an air cylinder fixed to the insert slot, and a piston rod protruding from the air cylinder is fixedly connected to one of the two racks

Methodology Applied
Scientific EffectPneumatic actuation:

Data Source

PatentUS20250029867A1Material frame unlocking device
Publication Date: 2025.01.23 TIANJIN ZHONGHUAN SEMICON CO LTD
  • US20250029867A1 patent drawing
  • US20250029867A1 patent drawing

AI summary

A material frame unlocking device may include a material frame and an insert slot, a clamping mechanism for clamping a silicon wafer is arranged on the material frame, and an unlocking mechanism for fitting the clamping mechanism is arranged on the insert slot. The clamping mechanism includes two clamping rods capable of opening and closing movements, an end of each of the two clamping rods is provided with a connecting rod, a middle portion of the connecting rod is provided with a hinge point, and an elastic assembly is arranged at one end of the connecting rod away from respective clamping rod, when the elastic assembly is controlled by the unlocking mechanism, the connecting rod rotates around the hinge point, and the two clamping rods are opened to separate the two clamping rods from each other.