Filter Holding Structure for Component Suction Head
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Solution Overview
Problem
Conventional filter holding structures in component suction heads require larger nozzle diameters and more complex mounting processes, leading to reduced operation efficiency in component mounting apparatuses due to the need for enlarged nozzle blocks and increased head intervals.
Innovation Solution
A filter holding structure with a detachable suction nozzle and a filter holding space in the nozzle shaft, where the filter is press-fitted and held securely without enlarging the nozzle diameter, allowing for direct and simplified mounting and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter is mounted into the nozzle block while being accommodated in the holder, then the filter can be securely held, but the inner diameter of the suction hole becomes larger, causing enlargement of the nozzle block and component suction head
Solution Approach 1:
The filter holding structure is divided into two separate components: the holder (which accommodates the filter) and the nozzle block (which contains the suction hole). The holder is detachably mounted onto the nozzle block, allowing the filter to be securely held in the holder while the nozzle block maintains its original size. This segmentation resolves the contradiction by separating the filter holding function from the nozzle block structure.
Solution Approach 2:
The holder is designed to be detachably mounted onto the outer peripheral surface of the nozzle block, with the holder containing the filter inside its hollow cylindrical structure. This nested arrangement allows the filter to be held securely within the holder while the holder itself attaches to the nozzle block without requiring enlargement of the nozzle block's suction hole.
2Reliability
If the filter is mounted using an externally threaded portion on the holder and internal thread in the suction hole, then the filter can be firmly fixed, but three mounting operations are required, increasing mounting complexity
Solution Approach 1:
The threading mechanism is extracted from the nozzle block and relocated to the holder. The holder is provided with an externally threaded portion, while the nozzle block has a threadably engageable portion with an internal thread. This extraction allows the filter to be firmly fixed through the threaded connection in the holder, while simplifying the overall mounting process by eliminating the need for separate filter insertion and fixing operations.
Solution Approach 2:
The filter accommodation function and the filter fixing function are merged into a single integrated holder structure. The holder simultaneously accommodates the filter and provides the externally threaded portion for threadable engagement with the nozzle block. This merging reduces the number of separate mounting operations required, as the filter is inserted and fixed in a single integrated operation.
3Ease of manufacture
If the nozzle block is enlarged to accommodate the filter and holder assembly, then the filter can be mounted, but the head interval in arranging multiple component suction heads side by side becomes wider, reducing operation efficiency
Solution Approach 1:
The filter holding system is segmented into a separate holder component that attaches to the nozzle block without requiring enlargement of the nozzle block. This segmentation allows the filter to be mounted easily in the holder, while the nozzle block maintains its compact dimensions, thereby preserving the tight head interval arrangement and high operation efficiency of multiple component suction heads.
Data Source
AI summary
In a filter holding structure for holding a filter in a component suction head in which a suction nozzle is detachably attached to a tip part of a nozzle shaft, a filter holding space for holding the filter and an opening allowing communication between the filter holding space and the suction nozzle are provided in a tip part of the nozzle shaft. Also, a communication region of the filter holding space connected to the opening is made narrower than an end surface of the filter on the suction nozzle side and is held in the tip part of the nozzle shaft.