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Radial Insertion

This is the process by which leaded through-hole components (mainly electrolytic or polyester capacitors, hairpin resistors, LEDs and transistors) are automatically inserted into the holes of conventional printed circuit boards and mechanically fixed in place by the under board clinching of each component's leads. Where axial insertion machines fit components 'flat' to the PCB, radial machines can fit components perpendicular or 90O to the PCB, the proximity to each other being determined by the size of insertion tooling in the machine.

Radial insertion machines can have up to 100 dispensing heads each capable of a holding a different component. Radial capability is essential for companies which manufacture products for the automotive or lighting/sign industries which use a lot of polarity conscious LEDs.

The radial machine is controlled by user programmable software. Software will determine the sequence components are cut from their tapes and transferred via a conveyor to the insertion tooling which will then insert the component in to the PCB. An under board cut and clinch mechanism clinches the component leads in place and crops the leads to the desired lead length.

Capital Equipment Topics

Axial Insertion

Radial Insertion

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Guide Written by Paul Wilson

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