Substrate Magazine Unloading with Bottom-Substrate Singulation
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Solution Overview
Problem
Existing unloading devices for substrate magazines require a large installation space and complex actuator systems due to the need for a vacuum gripper to separate substrates within the magazine, limiting their efficiency and compactness.
Innovation Solution
A gripper arm pushes a substrate stack onto a separating device above the conveyor belt, where a guide system and actuators work together to detach the bottommost substrate from the stack, allowing it to fall directly onto the conveyor belt without the need for a vacuum gripper within the magazine, thus reducing space and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a vacuum gripper is used to separate substrates within the magazine, then substrate separation is achieved, but installation space requirement increases
Solution Approach 1:
The separating device is extracted from the substrate magazine and relocated to the unloading device. The gripper arm now pushes substrate stacks onto the separating device, which then separates individual substrates below the magazine level. This extraction eliminates the need for vacuum grippers inside the magazine, reducing its space requirement while maintaining separation functionality.
Solution Approach 2:
Instead of separating substrates by pulling them out individually from above (vacuum gripper method), the invention inverts the approach by pushing substrate stacks out and separating them by removing substrates from below. This inversion allows separation to occur in a compact space beneath the magazine rather than requiring space within the magazine itself.
2Ease of operation
If a vacuum gripper is used to separate substrates within the magazine, then substrate separation is achieved, but device complexity increases
Solution Approach 1:
The complex vacuum gripper system is extracted from the magazine and replaced with a simpler pushing mechanism. The gripper arm simply pushes substrate stacks onto the separating device, eliminating the need for vacuum generation, control, and release mechanisms within the magazine structure.
Solution Approach 2:
The separation mechanism is inverted from an above-based vacuum gripping system to a below-based pushing system. This inversion simplifies the actuator requirements by using direct mechanical pushing rather than vacuum control, reducing the complexity of sensors, actuators, and control systems needed for substrate separation.
3Adaptability or versatility
If substrates are separated within the magazine, then individual substrate access is enabled, but space reservation in the magazine is required
Solution Approach 1:
The separation function is extracted from the magazine volume, allowing the magazine to be used for bulk substrate storage without reserving space for separation mechanisms. Individual substrate access is maintained by pushing stacks onto the external separating device, which then dispenses substrates one at a time.
Solution Approach 2:
Instead of separating substrates from above within the magazine (requiring vertical space), the system inverts by separating from below at the unloading station. This allows the magazine to maintain full volume for substrate storage while achieving individual substrate access through the external separation 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
This solution provides a compact and efficient unloading process with a smaller actuator system, enabling safe and direct placement of substrates onto the conveyor belt, reducing the overall installation space requirement and enhancing versatility.
Implementation Method 1
detach the bottommost substrate from the substrate stack and place it on the conveyor belt below
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to an unloading device (6) for a substrate magazine (3, 4, 5), wherein the substrate magazine (3, 4, 5) has several drawers (7) in which substrates can be arranged for storage or temporary storage, with at least one controllable conveyor belt (25) on which substrates can be placed, and with at least one controllable gripper arm (10) which is designed to push at least one substrate out of a drawer of the substrate magazine to the conveyor belt (25), wherein the conveyor belt (25) and the gripper arm (10) are arranged on a common and movably mounted support (8), wherein the gripper arm (10) is arranged at least in a starting position below the conveyor belt (25) in order to grasp at least one substrate from below for pushing it out.It is provided that the gripper arm (10) is designed to push out a substrate stack (29) with several substrates (30_1-30_5) stacked on top of each other from one of the drawers (7) above the conveyor belt (25), that a singulation device (15) is arranged above the conveyor belt (25) into which the substrate stack (29) can be inserted by the gripper arm (10), and that the singulation device (15) is designed to release the bottom substrate (30_5) of the substrate stack (29) from the substrate stack (29) and place it on the conveyor belt (25) below.