Turret Handler Picker Pairs Concentric Paths
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Solution Overview
Problem
Conventional turret handlers face inefficiencies in testing electronic elements due to increased weight and inertia from a larger number of pickers, which can lead to longer test times and higher costs when trying to mitigate inertia by reducing rotation speed.
Innovation Solution
The turret handler incorporates picker pairs with outer and inner pickers arranged along concentric circular paths, allowing for increased numbers of pickers and sockets without substantial design changes, enabling efficient placement and testing of electronic elements while accommodating both qualified and disqualified elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the diameter of the main plate is increased to increase the number of pickers, then the number of electronic elements that can be tested is improved, but the weight of the main plate increases and inertia is generated by high-speed rotation
Solution Approach 1:
The patent applies nesting by arranging pickers in multiple concentric circular paths (first circular path, second circular path, etc.) on the main plate. This allows multiple pickers to be positioned in a compact radial arrangement, increasing the total number of pickers without proportionally increasing the main plate diameter, thereby reducing the weight increase and inertia generation compared to a single large circular arrangement.
Solution Approach 2:
The patent transitions from a single circular arrangement to multiple concentric circular paths, effectively utilizing the radial dimension to pack more pickers into the available space. This dimensional expansion allows increased productivity while controlling the growth of main plate diameter and associated weight.
2Weight of moving object
If the rotation speed is decreased to prevent the inertia problem, then the inertia is reduced, but the index time is increased and the time and cost of the test procedure is increased
Solution Approach 1:
By nesting pickers in multiple concentric circular paths, the patent reduces the required main plate diameter for a given number of pickers. This smaller diameter reduces the moment of inertia, allowing the turret to maintain high rotation speeds without excessive inertial effects, thus preserving fast indexing times while accommodating more pickers.
3Productivity
If the number of pickers is increased to test more electronic elements, then the test capacity is improved, but the complexity of the device increases
Solution Approach 1:
The patent employs multiple sockets (first sockets, second sockets, etc.) that can receive electronic elements from different picker paths. This multi-functional socket arrangement allows the same socket structure to handle elements from various circular paths, reducing the need for separate handling mechanisms for each picker and thereby controlling device complexity while increasing test capacity.
Solution Approach 2:
The patent segments the picker arrangement into multiple independent circular paths with pickers positioned at specific angular intervals. This segmentation allows each picker to operate independently while sharing common support infrastructure (main plate, sockets), increasing capacity without proportionally increasing overall system complexity.
Data Source
AI summary
A turret handler with picker pairs is provided for testing a plurality of electronic elements. The turret handler includes a plurality of outer pickers, a plurality of inner pickers, a plurality of sockets and a package carrier. The outer pickers travel along a first circular path. The inner pickers travel along a second circular path. The first circular path and the second circular path are concentric circles, and the outer pickers and the inner pickers are arranged side by side along the radial direction of the first circular path. The sockets include a plurality of first sockets and a plurality of second sockets. The first sockets circumferentially correspond to the first circular path, the second sockets circumferentially correspond to the second circular path, and each first socket corresponds to one second socket along the radial direction. The package carrier includes a plurality of recesses.