The spindle selection facility is most useful when setting up or changing wire supplied, as each spindle can be skeined and set in turn. The rear needle solenoid operation can be programmed so that skeining is carried out only on selected spindles. This allows skeining of different wires on alternate spindles – coils with two different wire diameters can therefore be produced in one machine cycle.
When skeins are twisted at high speed, they can contract in length by as much as 20%. A system which does not allow correct skein contraction risks wire breakage or insulation damage. The Pillarmat II micro-processor actually counts the number of twists. The skein contraction rate is electronically generated to the counting system, which ensures that the skeins contract at exactly the right rate in direct relation to the number of twists. A further advantage of this system is that skeins can be fully twisted, to produce very small end loops. This can be particularly important on components where space is at a premium (e.g. sub-miniature relays and encapsulated sensor coils).
For skeining ultra-fine wire (below 0.03mm) or heavier gauges (above 0.1mm), either fast, medium or slow stranding speeds can be selected. This facility enables the Pillarmat II to handle a very wide range of wire diameters to cover almost any skeining requirement.
Optional speed control by percentage is also available.
Vertical Stranding Eyelets
Changing the stranding eyelet from horizontal to vertical has greatly improved the wire handling characteristics of the Pillarmat II. The wire now passes straight through the machine, with no additional tension being applied by the stranding eyelets. The design of the stranding bar has also been improved, using a far more robust drive mechanism.
The Pillarmat II can be quickly and easily interfaced with any type of multi-spindle winding machine. An RS 232 or optional RS 422 serial link, enable the Pillarmat to be programmed directly from the winding machine control panel. An opto-isolated external start input is provided. Relay contacts give and end of cycle output. A range of stands is available to suit most types of winding machinery.
Front take-up arms can be fitted to provide additional tension during automatic terminal wrapping by the winding machine.