Pin Lifting Device Sliding Guide Element
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Solution Overview
Problem
Pin lifting devices in vacuum chamber systems face challenges such as high mechanical stress, frequent wear, and potential differences that can affect vacuum processing, requiring precise control and regular maintenance, while also needing to handle substrates gently to avoid breakage and contamination.
Innovation Solution
A pin lifting device with a coupling part and a drive unit that includes a sliding guide element for precise, low-friction movement, allowing for electrical separation and reduced maintenance, along with a dynamic separating device to manage atmospheric conditions, and a design that avoids direct coupling between the drive and coupling components, ensuring precise and jerk-free movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If direct coupling between drive unit and coupling is used, then结构简单性 is improved, but movement precision and jerk-free operation deteriorate
Solution Approach 1:
A sliding guide element is introduced as an intermediary component between the drive unit and the coupling. This sliding guide element includes a sliding surface that guides the coupling during movement, ensuring precise and jerk-free operation while maintaining structural simplicity. The sliding guide element mediates the interaction between the drive unit and coupling, providing both guidance and support.
2Reliability
If frequent pin replacement is implemented, then reliability is improved, but productivity deteriorates
Solution Approach 1:
The sliding guide element provides self-aligning and self-guiding functions that reduce wear on the pins and couplings. By ensuring precise guidance and reducing lateral forces, the system extends the service life of pins, reducing the frequency of replacements needed while maintaining reliable operation throughout the processing cycle.
3Measurement precision
If hard motion stops are used, then positioning accuracy is improved, but substrate damage risk increases
Solution Approach 1:
The sliding guide element acts as a cushioning mechanism before the coupling reaches its final position. The sliding surface provides gradual deceleration and smooth stopping, preventing hard impacts that could damage the substrate while still achieving accurate positioning. The friction and normal forces in the sliding contact provide inherent cushioning.
4Force
If lubricants are applied to sliding surfaces, then friction is reduced, but contamination risk increases
Solution Approach 1:
The sliding guide element is designed to operate with minimal or no lubrication, accepting that the sliding surface may experience increased friction over time. Rather than using lubricants that could contaminate the vacuum environment, the system is designed to function reliably with dry or solid lubrication, prioritizing cleanliness over minimal friction.
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 solution enables more precise and reliable movement of support pins with reduced maintenance needs, minimizing mechanical stress and potential differences, thus improving handling and processing accuracy while maintaining a clean and controlled environment.
Implementation Method 1
the sliding element cooperates with a guide surface provided by the coupling part in such a way that the sliding guide element can be guided linearly along the adjustment axis and in a sliding manner relative to the guide surface
Data Source
AI summary
Disclosed is a pin lifting device for moving and positioning a substrate in a process atmosphere region. The pin lifting device has a coupling part including a coupling configured to receive a support pin designed to contact and carry the substrate, and a drive unit configured to adjust the coupling linearly along an adjustment axis (A) from a lowered normal position into an extended support position and back. The coupling part has a sliding guide element movable along the adjustment axis (A), where the sliding guide element is coupled to the drive unit and where the sliding guide element has at least one sliding element. The sliding element interacts with a guide surface provided by the coupling part to guide the sliding guide element can be linearly along the adjustment axis (A) and in a sliding manner relative to the guide surface.