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Component Placement on A-Line
December 31, 1969 |Estimated reading time: 3 minutes
The FX-1R high-speed modular mounter suits the A-Line because it accurately and efficiently places a range of components, with specialized axes controls.
Geron Ryden, Juki Automation Systems
Juki Corporation contributed a pick-and-place system to the A-Line during the IPC Midwest exhibition. The company will include its FX-1R high-speed modular mounter. Juki chose the FX-1R because of its leading-edge technology. The system is equipped with a double head system driven by two independent linear motors that create both high speed and positional accuracy.
Juki worked closely with The Morey Corporation in the design and development of the promotional board that will be run on the A-Line at the exhibition. During the production of the board, Juki will have an applications engineer on-site to demonstrate and answer any questions about the operation of the FX-1R used in the production of this board.
Focusing on high throughput and precise component centering, the FX-1R features quadruple heads with a multi-nozzle alignment system that uses a high-resolution laser developed exclusively for Juki’s assembly systems. This technology simultaneously measures four different components in width, length, and height. In-flight measurement eliminates idle time. The chip shooter features a placement rate of 27,000 CPH (IPC 9850), and a component range from 01005 to 20 × 20 mm. It also consistently demonstrates a placement accuracy of ±50 μm (3 sigma).
The FX-1R is a traditional modular chip shooter driven at higher speeds. Refinements in the drive system improve actual throughput. This system therefore seemed the most logical choice to showcase in the A-Line. It offers numerous features including high rigidity and low vibration, ease of operation, and reliable identification of fiducial marks.
The FX-1 uses three different drive systems: linear motor, belt drive, and ball screw. Each best suits different applications. Belt drive is used for the heavy movement of the Y-axis. A ball screw is used for the short, frequent movement of the PWB table. Linear motors are used for the X-axis to reduce weight and improve performance.
The system also features HI-Drive, which is designed for high-speed placement of smaller SMT components (from 0603 [0201] to 20 × 20 mm). The HI-Drive has two Y motors moving the X beam. Two heads mounted on the X beam, each with four nozzles, are moved by a single linear motor.
For a high-volume line, feeders can be mounted on the front only. For flexible production, feeders can be mounted on both sides and the machine will still run at the maximum efficiency using the HI-Drive system.
The HI-Drive allows the PCB table to be moved to an easy-to-access location in the front of the machine. The operator can add or remove support pins and change any other hardware for different boards with this function. During production, one head picks while the other head places. The heads alternate picking and placing until production is completed on the front of the machine. The heads and PCB then move to the rear and repeat this process.
Nozzle change time has been considered carefully on the FX-1R. A benefit of the HI-Drive is the ability to change nozzles on one head while the other head continues to place components. This results in less time lost to nozzle changing compared to a traditional drive system and also does not require an often-complicated on-the-fly nozzle change mechanism to function.
This system is a good fit for the A-Line not only because of the advanced technologies and features it brings to the line, but also because it is built using established company principles, illustrating Juki’s dedication to introducing high-quality, successful products to the industry.
Geron Ryden, marketing manager, Juki Automation Systems, may be contacted at 507 Airport Blvd., Morrisville, N.C. 27560; (919) 460-0111 x130; gryden@jas-smt.com.