Rotary Nozzle Vacuum Layout for Interference-Free Component Mounting
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Solution Overview
Problem
Conventional component mounters with multiple suction nozzles are prone to operational interference, where the state of one suction nozzle performing pickup or mounting operations is easily influenced by the state of other suction nozzles, such as leaks or missing components.
Innovation Solution
A component mounter design featuring a rotary head with separate negative pressure units for all nozzle holders and a specific unit for the nozzle at the revolving position, along with sensors to detect negative pressure states, ensuring independent operation and accurate state determination of each suction nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all suction nozzles are connected to a common negative pressure dividing path, then the device complexity is reduced, but the operational reliability of individual suction nozzles deteriorates due to mutual interference
Solution Approach 1:
The negative pressure supply system is segmented into multiple independent paths: a first negative pressure dividing path that supplies negative pressure to all nozzle holders collectively, and a second negative pressure dividing path that supplies negative pressure only to the specific nozzle holder at the revolving position. This segmentation isolates the operational suction nozzle from interference by other nozzles while maintaining system manageability.
2Reliability
If a separate negative pressure unit is provided for each nozzle holder, then the operational reliability of each suction nozzle is improved, but the device complexity increases
Solution Approach 1:
Instead of providing completely separate negative pressure units for each nozzle holder, the invention applies local quality by providing a dedicated second negative pressure dividing path only to the specific nozzle holder at the revolving position, while other nozzle holders share the first negative pressure dividing path. This localized differentiation achieves operational independence where needed without unnecessarily complicating the entire system.
3Ease of operation
If all suction nozzles share a common negative pressure source, then the ease of operation is improved, but the measurement precision of suction nozzle state deteriorates due to interference from other nozzles
Solution Approach 1:
The negative pressure supply system is segmented into multiple independent paths: a first negative pressure dividing path that supplies negative pressure to all nozzle holders collectively, and a second negative pressure dividing path that supplies negative pressure only to the specific nozzle holder at the revolving position. This segmentation isolates the operational suction nozzle from interference by other nozzles while maintaining system manageability.
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 design prevents operational interference between suction nozzles, allowing for accurate component pickup and mounting states to be determined independently, enhancing operational reliability and maintenance detection.
Implementation Method 1
a suction nozzle configured to pick up a component at a tip section of the suction nozzle using suction
Implementation Method 2
a first negative pressure unit configured to supply negative pressure to the nozzle passages of, from among the multiple nozzle holders, all the nozzle holders via a first port
Implementation Method 3
a second negative pressure unit configured to supply negative pressure to the nozzle passage of, from among the multiple nozzle holders, the nozzle holder positioned at the specified revolving position via a second port
Data Source
AI summary
A rotary head, on which are arranged in a circumferential direction multiple nozzle holders each holding a suction nozzle, is provided with, separately to first negative pressure supply unit that supplies negative pressure to the suction openings of all the suction nozzles, second negative pressure supply unit that supplies negative pressure to the suction nozzle held by the nozzle holder that is lowerable when that nozzle holder is lowered. Accordingly, when performing pickup operation and mounting operation using the suction nozzle, the state of the suction nozzle is not affected by the state of the other suction nozzles.