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Guide bar for a warp knitter has clamps at both ends with controlled motors, to apply equal and opposite forces which remain constant during all bar movements using minimum motor forces at high speed working
Guide bar for a warp knitter has clamps at both ends with controlled motors, to apply equal and opposite forces which remain constant during all bar movements using minimum motor forces at high speed working
The warp knitter with at least one bar, e.g. a guide bar, has a controlled motor to move the bar in both directions. Clamps (4,6) are at both ends of the bar, with equal and opposite clamping forces. The bar at the warp knitter is held at both ends by constant clamping forces through all its movements. The bar (1) is a strip, and at least one clamp is linked it by a flexible tensioner from the motor. The tensioner is a toothed belt, engaged by a cogwheel at the motor, or it is a cable wound around a drum at the motor. The tensioners can also be piston/cylinder units, operated by a pressure medium and preferably air. Both piston/cylinder units have the same pressure surfaces, with a common pressure supply (9). Each cylinder is of glass with a graphite piston, with an air gap between them of = 0.01 mm. The piston rod is of wire, with a maximum diameter of 2 mm. The connected air pressure lines (7,8) have a diameter which is at least 25% of the cylinder diameter.
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