Dual Positioning System for Ultra-Small Device Packing
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Solution Overview
Problem
Existing methods for packing ultra-small electronic devices into carrier tape pockets are inefficient due to the time-consuming alignment process, which reduces system throughput due to the heavy load and slow movement of correction mechanisms.
Innovation Solution
An apparatus with a dual positioning system, comprising a first coarse positioning device and a second fine positioning device, allows for simultaneous and independent adjustments to quickly align electronic devices with pockets on a carrier tape, reducing alignment time and maintaining high precision without substantial throughput reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a correction mechanism is used to improve alignment between electronic devices and pockets, then manufacturing precision is improved, but productivity deteriorates due to slow movement speed
Solution Approach 1:
The positioning system is divided into two independent segments: a first positioning device for coarse positioning and a second positioning device for fine positioning. This segmentation allows each device to be optimized for its specific function - the first device for speed and large-range adjustment, the second device for precision and small-range adjustment - thereby resolving the contradiction between positioning speed and positioning precision.
2Manufacturing precision
If a heavy correction mechanism is used to achieve precise alignment, then manufacturing precision is improved, but the time required for positioning increases
Solution Approach 1:
The positioning task is segmented into two phases: coarse positioning handled by the first positioning device and fine positioning handled by the second positioning device. This allows the heavy first device to perform rapid large-range movements while the lighter second device performs precise small-range adjustments, significantly reducing total alignment time while maintaining high precision.
Solution Approach 2:
The first positioning device performs preliminary coarse positioning before the second positioning device performs fine positioning. This preliminary action brings the carrier tape close to the target position quickly, reducing the distance the second device needs to travel and thereby minimizing the time loss associated with precise positioning.
3Manufacturing precision
If a single high-precision positioning device is used, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
Instead of using a single complex high-precision positioning device, the system is segmented into two simpler positioning devices with different functions. The first device handles coarse positioning with lower precision requirements, and the second device handles fine positioning with higher precision requirements. This segmentation reduces the complexity of each individual device while achieving the same overall precision as a single high-precision device.
Data Source
AI summary
An apparatus for placing ultra-small electronic devices into pockets on a carrier tape for packing has at least one holding element, a movement mechanism, a conveying mechanism and a positioning mechanism. The positioning mechanism further includes first and second positioning devices coupled to the conveying mechanism, wherein the second positioning device is mounted on the first positioning device. In use, the conveying mechanism conveys the carrier tape to move each pocket to a receiving position and the movement mechanism moves each holding element to place the electronic device into a respective pocket at the receiving position. The positioning mechanism adjusts a relative position between the electronic device and the respective pocket by adjusting the carrier tape, the first and second positioning devices being for coarse and fine positioning of the conveying mechanism respectively.