Pick-up Nozzle Bypass Pin for Suction Flow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As electronic components become smaller, suction nozzles face challenges in maintaining negative pressure due to increased pin cross-section proportion, leading to leaks and orientation issues during component pickup, especially for curved surfaces like large capacity capacitors.
Innovation Solution
The suction nozzle incorporates a pin that crosses the intake passage with a suction assistance section connecting downstream and upstream, allowing air bypass and maintaining sufficient flow, and is integrated with a nozzle holder using protruding ends for enhanced strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the size of suction nozzle is reduced to match smaller electronic components, then the nozzle can handle smaller components, but the proportion of pin cross-section in the intake passage increases causing negative pressure to be insufficient
Solution Approach 1:
The suction assistance section is divided into multiple segments (first, second, third sections) that are positioned at different locations around the pin. Each segment provides localized suction assistance, collectively maintaining sufficient negative pressure in the intake passage despite the pin occupying a large proportion of the cross-section.
Solution Approach 2:
The suction assistance section acts as an intermediary structure that bypasses the pin obstruction. It provides an alternative flow path that allows air to pass around the pin, maintaining the negative pressure gradient necessary for component pickup without being blocked by the pin's large cross-sectional area.
2Ease of manufacture
If pin is joined to outer surface of wall, then manufacturing is easier, but strength is insufficient and pin may break under large forces
Solution Approach 1:
The pin is merged with the wall structure by piercing through the wall rather than being surface-mounted. This integration creates a more robust connection where the pin becomes part of the wall structure itself, significantly increasing its strength to withstand large forces during component pickup and integration with the nozzle holder.
3Volume of moving object
If pin cross-section proportion in intake passage increases, then nozzle can be smaller, but leaks occur easily and component orientation becomes inaccurate
Solution Approach 1:
The suction assistance section is divided into multiple segments (first, second, third sections) that are positioned at different locations around the pin. Each segment provides localized suction assistance, collectively maintaining sufficient negative pressure in the intake passage despite the pin occupying a large proportion of the cross-section.
Solution Approach 2:
The suction assistance section acts as an intermediary structure that bypasses the pin obstruction. It provides an alternative flow path that allows air to pass around the pin, maintaining the negative pressure gradient necessary for component pickup without being blocked by the pin's large cross-sectional area.
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 ensures reliable negative pressure application and accurate component orientation, even for large capacity capacitors with curved surfaces, by maintaining a sufficient flow rate and reducing the risk of pin breakage.
Implementation Method 1
air is able to bypass the pin by flowing through the suction assistance section
Data Source
Figure 1
Figure 2
Figure 3
AI summary
With suction nozzle 10, suction assistance section 16b is provided within intake passage 12 and connects a side downstream of pin 26 and a side upstream of pin 26. A cross section (the area of a cross section cut in a direction perpendicular to the direction in which intake passage 12 extends) of intake passage 12 is narrowed by pin 26. However, air is able to bypass pin 26 by flowing through suction assistance section 16b. Accordingly, a sufficient flow amount is maintained even in the portion of intake passage 12 where pin 26 cuts across. As a result, sufficiently large negative pressure is applied in intake passage 12.