Electronic Component Mounter Vacuum Break Control
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Solution Overview
Problem
Existing electronic component mounters face inefficiencies due to long vacuum break times and the need for variable air chamber volumes, which can lead to inadequate vacuum break effects and potential component displacement.
Innovation Solution
An electronic component mounter with a suction nozzle that supplies a high-pressure first blow for a specified time, followed by a lower-pressure second blow, to rapidly break the vacuum and prevent component displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If high pressure air is supplied to the suction nozzle for vacuum break, then the vacuum break time is shortened, but electronic components may be blown away
Solution Approach 1:
The patent applies periodic action by dividing the air supply into two distinct phases: first supplying high-pressure air for a predetermined time to achieve rapid vacuum break, then switching to low-pressure air to maintain the broken state without blowing components away. This time-based periodic control resolves the contradiction between fast vacuum break and preventing component displacement.
Solution Approach 2:
The patent implements dynamics by dynamically adjusting the air pressure supplied to the suction nozzle based on the mounting process stage. The switching device changes the pressure from high to low at the appropriate moment, making the air pressure adaptive to the real-time requirements of the vacuum break and component release process.
2Object-affected harmful factors
If low pressure air is supplied to the suction nozzle, then components are not blown away, but the vacuum break time becomes long
Solution Approach 1:
The patent uses periodic action with two phases: initially supplying high-pressure air to achieve rapid vacuum break, then switching to low-pressure air to prevent component displacement. This sequential periodic control allows the system to benefit from both high pressure (fast break) and low pressure (stable release).
Solution Approach 2:
The patent applies preliminary action by first supplying high-pressure air to break the vacuum before switching to low-pressure air. This preliminary high-pressure action prepares the system for the subsequent low-pressure phase, ensuring the vacuum is already broken before gentle release begins.
3Reliability
If an air chamber is provided to capture air for vacuum break, then vacuum break consistency is improved, but the device complexity increases
Solution Approach 1:
The patent extracts the air chamber component from the system and replaces it with a switching device that directly controls air pressure timing. This removal simplifies the device structure while maintaining vacuum break consistency through precise timing control rather than physical air storage.
Solution Approach 2:
The patent substitutes the mechanical air chamber (physical air storage) with a control-based switching device that uses timing and pressure regulation to achieve the same vacuum break consistency. This replaces a mechanical volume-based solution with a control-based pressure-time solution.
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 method enables a reliable and rapid vacuum break, improving mounting efficiency and preventing components from being blown away, while eliminating the need for variable air chamber volumes.
Implementation Method 1
an electronic component housed in a component housing section of carrier tape fed by a tape feeder is picked up by a suction nozzle using negative pressure
Implementation Method 2
positive pressure air that acts as a vacuum break is supplied to the suction nozzle so as to return the pressure at the tip of the suction nozzle to atmospheric pressure, which releases the component from the suction nozzle
Data Source
AI summary
An electronic component mounter (10) including: a suction nozzle (35) configured to pick up an electronic component (P) housed in a housing section that houses multiple of the electronic components that are to be mounted on a circuit board (PB); a switching device (55) configured to switch air supplied to a nozzle hole (35a) of the suction nozzle (35) to negative pressure air when picking up the electronic component (P), and to switch the air supplied to the nozzle hole (35a) of the suction nozzle (35) to positive pressure air when mounting the electronic component (P) that was picked up by the suction nozzle (35) on the circuit board (PB); and a blow supply device (58) configured to supply at least a first blow to the suction nozzle (35) for a specified time when the positive pressure air is being supplied to the nozzle hole (35a) by a switching device (55), then, after the specified time has elapsed, stop the first blow and supply a second blow with a lower pressure than the first blow to the suction nozzle (35).