Pickup Nozzle Dynamics for Multi-Supplier Component Placement
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Solution Overview
Problem
Conventional electronic-circuit-component placement machines have limitations in usability due to fixed relative positions of bulk feeders and pickup nozzles, leading to inefficiencies when using different component suppliers, particularly when the pickup nozzles can only place components from a single supplier, restricting their placement flexibility and efficiency.
Innovation Solution
The electronic-circuit-component placement machine design allows the pickup nozzle and component supplier to move together relative to the circuit substrate, enabling efficient receipt and placement of components from any supplier, with the ability to move in directions intersecting the nozzle's axis, allowing for alternative component sources and improved usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pickup nozzle and component supplier are fixed at specific relative positions, then the structure is simple, but the placement machine cannot efficiently handle different component suppliers and has limited usability
Solution Approach 1:
The pickup nozzle and component supplier are made movable relative to each other through a two-degree-of-freedom movement mechanism. The nozzle holder can rotate about a vertical axis and the pickup nozzle can move along its axial direction, enabling dynamic adjustment of their relative positions to accommodate different component suppliers while maintaining structural simplicity
Solution Approach 2:
The movable pickup nozzle and component supplier configuration enables the placement machine to handle multiple types of component suppliers (bulk feeder, tape feeder, etc.) with a single unified structure, making the system universal and adaptable to different component supply methods without requiring separate fixed mechanisms for each supplier type
2Productivity
If the pickup nozzle can only receive components from a specific component supplier, then the mechanism is simple, but the placement flexibility and efficiency are reduced
Solution Approach 1:
The pickup nozzle is equipped with a two-degree-of-freedom movement mechanism consisting of a rotary motion about a vertical axis and a linear motion along the nozzle axial direction. This dynamic positioning capability allows the nozzle to efficiently receive components from various component suppliers at different positions and orientations, significantly improving placement productivity without excessive complexity
3Manufacturing precision
If the pickup nozzle and component supplier move together relative to the circuit substrate, then the placement precision is improved, but the movement control complexity increases
Solution Approach 1:
The movement control is segmented into two independent degrees of freedom: rotation about a vertical axis and linear movement along the nozzle axial direction. This segmentation allows each degree of freedom to be controlled independently, simplifying the overall control system while achieving precise relative positioning between the pickup nozzle and component supplier for improved placement precision
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 enhances the efficiency and usability of the placement machine by allowing components from any supplier to be placed on the substrate, increasing flexibility and reducing the complexity of the relative movement devices, resulting in higher placement accuracy and productivity.
Implementation Method 1
a pickup nozzle (172) held by the placement unit body (132) and advanceable and retractable in an axial direction of the pickup nozzle (172), the pickup nozzle (172) comprising a pickup portion (197) at a front end portion thereof
Data Source
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AI summary
Usability of an electronic-circuit-component placement machine in which a component supplier and a pickup nozzle are moved together relatively to a circuit board is improved. Twelve pickup nozzles 172 are provided on a head body 186 with bulk feeders 402 and a component-image taking device and moved together relative to a circuit board. Each pickup nozzle 172 is moved by rotation of a rotary body 180 to a component receiving position to receive an electronic circuit component from the bulk feeder 402 and moved to a component-image taking device by which an image of the electronic circuit component is taken. The pickup nozzle is moved to a component placement position to place the electronic circuit component onto a circuit board. Also, the pickup nozzle 172 at the component placement position receives an electronic circuit component from a tape feeder provided on a module body and places the electronic circuit component onto the circuit board.