Adjustable Cassette Tray for Universal DIMM Handling
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Solution Overview
Problem
Current cassette trays require multiple specifications to accommodate different DIMM sizes, leading to excess inventory and increased manufacturing costs, and conventional robots lack accuracy in handling circuit boards due to large passage widths and improper alignment.
Innovation Solution
An adjustable cassette tray with a bottom plate and holding members featuring positioning holes and obstruction members with sloped surfaces, allowing for secure placement and alignment of circuit boards of varying dimensions, and a carrier module with a foolproof structure to ensure correct orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple specifications of cassette trays are provided to accommodate different DIMM sizes, then the ability to receive both long and short DIMMs is improved, but the quantity of inventory increases and manufacturing cost increases
Solution Approach 1:
The cassette tray is designed with a universal structure that can accommodate both long and short DIMMs using the same tray. The holding members can be positioned at different locations on the bottom plate to suit different circuit board dimensions, eliminating the need for multiple specialized trays and reducing inventory quantity.
Solution Approach 2:
The holding members are designed to be adjustable and repositionable on the bottom plate. This dynamic configuration allows the same cassette tray to adapt to different DIMM sizes by changing the position of holding members, rather than requiring static specialized trays for each size.
2Ease of operation
If the width of passages is made large to facilitate manual placement, then the ease of operation is improved, but the circuit board may tilt abnormally and robot operation accuracy deteriorates
Solution Approach 1:
The passage structure incorporates localized obstruction members with sloped surfaces at specific positions to guide and constrain the circuit board. These local structural features provide precise alignment and prevent tilting without requiring the entire passage to be narrow, thus maintaining ease of manual placement while ensuring robot operation accuracy.
3Manufacturing precision
If compartments are formed between passages to ensure correct placement, then the manufacturing precision is improved, but the circuit boards may be hit by compartments during manual placement
Solution Approach 1:
The sloped surfaces of the obstruction members serve as intermediary guiding structures that facilitate smooth placement of the circuit board into the passage. These sloped surfaces act as a mediator between the manual placement process and the precise positioning requirement, enabling accurate placement without sharp corners or edges that could damage the circuit board.
Data Source
AI summary
A cassette tray is provided, which includes a bottom plate and two holding members. The bottom plate includes a plurality of positioning holes, wherein the positioning holes are arranged in rows along a first direction, and the rows are spaced apart from each other in a second direction perpendicular to the first direction. Each of the holding members is selectively connected to the positioning holes in one of the rows and mounted on the bottom plate in a detachable manner, and a circuit board is received between the two holding members.