Adjustable Ejector Pin Assembly for Faster Chip Package Changeover
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Solution Overview
Problem
Existing ejector pin mechanisms for chip packaging require manual adjustments and frequent replacements, leading to inefficiencies and potential errors due to manual operations and the risk of metal foreign objects causing abnormalities.
Innovation Solution
The design of an ejector pin device with a knob unit that adjusts a corresponding supporting unit, allowing for precise control over the position and number of ejector pins, reducing the need for manual adjustments and minimizing metal foreign objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual operations are used to dismount and mount the pin cylinder for adjusting ejector pins, then the requirements of different products can be met, but mounting deviations and metal foreign objects appear easily, causing product abnormality
Solution Approach 1:
The device enables self-adjustment through the rotating knob that directly controls the supporting unit's vertical movement, eliminating the need for manual dismounting and mounting of the pin cylinder. The operator can adjust ejector pin positions by simply rotating the knob, and the system automatically maintains the adjusted position through the limiting mechanism.
Solution Approach 2:
The patent replaces the manual mechanical operation of dismounting and mounting the pin cylinder with a rotating knob mechanism that uses threaded engagement to achieve vertical movement of the supporting unit. This substitution eliminates mounting deviations and prevents metal foreign objects from entering the system.
2Adaptability or versatility
If the pin cylinder is frequently replaced to adapt to different chips, then different product requirements are satisfied, but the working efficiency of the ejector pin mechanism is greatly reduced
Solution Approach 1:
The device transforms the static pin cylinder into a dynamically adjustable system where the supporting unit can move vertically along the guide groove. The rotating knob enables continuous adjustment of the supporting unit's position, allowing the ejector pins to be repositioned for different chip sizes without replacing the entire pin cylinder, thus maintaining high working efficiency while adapting to different products.
Solution Approach 2:
The pin cylinder is designed with a universal structure that can accommodate different chip sizes through the adjustable supporting unit. The guide groove and limiting mechanism allow the same pin cylinder to serve multiple product lines by simply adjusting the supporting unit's vertical position, eliminating the need for frequent replacements and improving productivity.
3Measurement precision
If the ejector pin mechanism is manually adjusted, then precise positioning can be achieved, but the adjustment process is time-consuming and reduces overall packaging efficiency
Solution Approach 1:
The patent replaces time-consuming manual adjustment operations with a rotating knob mechanism that provides precise control over the supporting unit's vertical movement. The threaded engagement between the knob and supporting unit converts rotational motion into precise linear displacement, enabling quick and accurate positioning without manual measurement and adjustment, thus reducing adjustment time while maintaining precision.
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 improves the efficiency of chip packaging by allowing for quick and precise adjustments of ejector pins without manual intervention, reducing errors and increasing reliability.
Implementation Method 1
a vacuum hole and an ejector pin hole corresponding to the ejector pin are formed in the upper surface of the pin cylinder
Data Source
AI summary
The present invention discloses an ejector pin device for chip packaging, which comprises a pin cylinder, a base and an ejector pin base module, wherein the pin cylinder sleeves the ejector pin base module, the base is located below the ejector pin base module and is configured to fix the ejector pin base module; and the ejector pin base module comprises a knob unit and a supporting unit. An effect of adjusting the knob unit can be acted on the corresponding supporting unit, so that the requirements of the numbers and positions of the ejector pins required by different products are satisfied and metal foreign matters are reduced, thereby improving the efficiency of replacing products by a worker.