Striping system for circular knitting machine
AssigneeJumberca, S.A.
InventorJose M. D. Guell
Life of this patent
Estimating the term…
Abstract
The striper of the system is provided with yarnguide rods which are pivotable to a position conducive to delivery of yarn to the needle. The rod to be pivoted is selected by a selector which imposes a small movement on a slide member and this small movement causes the slide member to be moved by a first radial cam such that its movement causes pivoting of the rod. Independently of said pivoting, a closing lever and an opening lever respectively adapted to retain and cut the yarn or release it are always moved. The movement of said levers, is only effective when at least one yarnguide rod has pivoted. There is a striper for each cam section and all of them are controlled by a single selection box containing the selectors.
Claims6
In a circular knitting machine comprising an axis of rotation, a needle cylinder provided with needles adapted to receive knitting yarn, cam sections for regulating the movement of said needles, a support for said cam sections, stripers and a common yarnguide from which the yarn may run to the needle, a striping system comprising at least two yarnguide rods, each being provided with a yarn notch, each rod being capable of pivoting between a first position away from said axis of rotation and a second position towards said axis of rotation;
- a first spring for each yarnguide rod urging it to said first position;
- a support member associated with each yarnguide rod and fixedly attached to a gripper member for retaining the yarn and with a shears member for cutting said yarn, said support member being provided with first means to be pushed downwardly and second means to be pushed upwardly, and being adapted to slide along the rod between a first lower position in which the gripper member retains the yarn and a second upper position in which the gripper member does not retain the yarn, said shears member being adapted to cut the yarn on moving from said second to said first position;
- a guide plate for each yarnguide rod, provided with a lower contour in which there is provided a recess for guiding the yarn between the infeed yarnguide and the common yarnguide;
- a moving cam, adapted to pick up the yarn retained in a yarnguide rod when the latter is in said second position thereof, such that the yarn slides along said lower contour to reach said recess, be inserted in the common yarnguide and be captured by the needle;
- a pivoting mechanism for pivoting each yarnguide rod comprising a last rocking lever having an end;
- a selection device for actuating the pivoting mechanisms;
- a closing mechanism to lead said support member to said first lower position;
- and
- an opening mechanism to lead said support member to said second upper position.
Dependencies are inferred from the claim text.