Component Mounting Device Ejector Vacuum Pump Segmentation
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Solution Overview
Problem
Conventional component mounting devices with separate negative pressure pumps for the pressure adjusting device and nozzle pressure adjusting device are costly and bulky, and sharing a single pump can lead to nozzle instability due to potential leaks during component pickup.
Innovation Solution
A component mounting device that uses a vacuum pump for the nozzle flow path and an ejector to generate negative pressure for the holding section flow path, allowing separate negative pressure sources for component and nozzle pickup, thereby preventing leak-induced nozzle instability and reducing device size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate negative pressure pumps are provided for the pressure adjusting device and nozzle pressure adjusting device, then the pickup of component and pickup of nozzle can be independently controlled, but the device size and cost increase
Solution Approach 1:
The patent divides the negative pressure supply system into two separate sources: a vacuum pump for the nozzle pickup and an ejector for the component pickup. This segmentation allows independent control of each pickup operation while avoiding the need for a single large-capacity pump, thereby reducing overall device size and cost while maintaining reliability
Solution Approach 2:
The vacuum pump serves dual purposes: it provides negative pressure for both nozzle pickup and component pickup through the separate flow paths. This multi-functionality eliminates the need for two completely independent pump systems, reducing device complexity and size while maintaining independent control capability
2Volume of stationary object
If a single negative pressure pump is shared by the pressure adjusting device and nozzle pressure adjusting device, then device size is reduced, but the nozzle may fall due to leak affecting the holding
Solution Approach 1:
The system segments the negative pressure supply into two independent sources: a vacuum pump dedicated to nozzle pickup and an ejector dedicated to component pickup. This segmentation ensures that leaks in the component pickup path do not affect nozzle holding stability, as each has its own independent pressure source
Solution Approach 2:
The ejector acts as an intermediary negative pressure source specifically for component pickup, generated using positive pressure from the positive pressure flow path. This intermediary system isolates the component pickup function from the main vacuum pump, preventing leak propagation while maintaining compact device size
3Reliability
If vacuum pumps are used as both negative pressure sources, then stable negative pressure supply is achieved, but device cost and size increase
Solution Approach 1:
The patent applies different negative pressure generation methods to different functions: a vacuum pump (providing stable negative pressure) is used for the critical nozzle pickup function, while an ejector (simpler, more compact) is used for the component pickup function. This local differentiation optimizes both stability and device complexity
Solution Approach 2:
The ejector serves as a simpler, more compact negative pressure source for component pickup compared to a vacuum pump. While less stable than a vacuum pump, it is sufficient for component pickup and significantly reduces device complexity and cost, effectively replacing a vacuum pump in the component pickup role
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 configuration stabilizes component pickup while preventing nozzle instability and device size increase, ensuring reliable and compact operation even with components prone to leaks.
Implementation Method 1
a nozzle flow path configured to supply a negative pressure generated by an operation of a vacuum pump to the nozzle
Implementation Method 2
an ejector configured to generate a negative pressure using the positive pressure of the positive pressure flow path
Data Source
AI summary
Pickup of a component and pickup of a nozzle are appropriately performed while preventing an increase in size of a device. A component mounting device for picking up a nozzle configured to pick up a component through a negative pressure, at a holding section of a head through a negative pressure, includes: a nozzle flow path configured to supply a negative pressure generated by an operation of a vacuum pump to the nozzle; a positive pressure flow path configured to supply a positive pressure; an ejector configured to generate a negative pressure using the positive pressure of the positive pressure flow path; and a holding section flow path configured to supply the negative pressure generated by an operation of the ejector to the holding section.