Accurate Push-In Detection for Component Mounters
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Summary
Problems
Existing component mounters face challenges in accurately determining whether the push-in amount of the nozzle section has reached a predetermined value due to changes in the nozzle section's state, such as the presence or absence of a component, affecting air flow rate or pressure measurements.
Innovation solutions
A component mounter design incorporating a mounting head with a first and second gas passage, where the second gas passage does not communicate with the first gas passage used for component pickup, and a valve that switches communication with the outside based on the push-in amount, allowing for accurate detection of the push-in amount through flow rate or pressure sensors.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the air passage is used to determine the push-in amount by detecting flow rate or pressure, then the push-in amount can be monitored, but the determination becomes inaccurate when the nozzle section state changes due to component presence or type
Why choose this principle:
The air passage is divided into two separate passages: a first gas passage for picking up components and a second gas passage for determining the push-in amount. This segmentation isolates the measurement function from the component handling function, preventing interference from component presence or type on the push-in amount detection accuracy.
Principle concept:
If the air passage is used to determine the push-in amount by detecting flow rate or pressure, then the push-in amount can be monitored, but the determination becomes inaccurate when the nozzle section state changes due to component presence or type
Why choose this principle:
The push-in amount detection function is extracted from the component pickup air passage and implemented through a dedicated second gas passage. This extraction removes the source of measurement interference, allowing accurate determination of the push-in amount regardless of whether a component is present or what type it is.
Application Domain
Data Source
AI summary:
A component mounter design incorporating a mounting head with a first and second gas passage, where the second gas passage does not communicate with the first gas passage used for component pickup, and a valve that switches communication with the outside based on the push-in amount, allowing for accurate detection of the push-in amount through flow rate or pressure sensors.
Abstract
There is provided a component mounter for mounting a component on a mounting target object, including: a mounting head comprising a base section having, in the interior thereof, a first gas passage and a second gas passage that does not communicate with the first gas passage; a lifting and lowering mechanism for lifting and lowering the base section; a suction nozzle having a nozzle section disposed below the base section and configured to be lifted up and lowered, as the base section is lifted up and lowered, to pick up the component through a negative pressure supplied to the first gas passage; a biasing section for biasing the nozzle section downwards while permitting the nozzle section to be pushed in towards the base section; and a valve for switching between presence and absence of communication between the second gas passage and the outside depending on whether a push-in amount of the nozzle section has not yet reached or reached a predetermined value; and a detecting device for detecting at least one of a flow rate or a pressure of gas flowing through the second gas passage.