Knitting needles

knitting needles

1. KNITTING NEEDLE Presented By – Jijo M Daniel PGDM (textiles) 14tm07

2. Knitting needle TYPES THE BEARDED NEEDLE 3 TYPES OF KNITTING NEEDLES THE COMPOUND NEEDLE THE LATCH NEEDLE the hook opening and closing device a system allowing the needle to move and form the loop. the hook, which takes and retains the thread to be looped

3. The bearded or spring needle was the first type of needle to be produced . It is the cheapest and simplest type to manufacture as it is made from a single piece of metal The bearded needle is essentially a frame needle, the needles being fixed to move Breaded needle FEATURES

4. The head , where the stem is turned into a hook to draw the new loop through the old loop. The beard , which is the curved downwards continuation of the hook that is used to separate the trapped new loop inside from the old loop as it slides off the needle beard. The stem , around which the needle loop is formed. The eye , or groove, cut in the stem to receive the pointed tip of the beard when it is pressed, thus enclosing the new loop. The shank , which may be bent for individual location in the machine or cast with others in a metal ‘lead’. Breaded needle PARTS

5. BREADED NEEDLE AND KNITTING MACHINE PARTS Breaded needle

6. Advantages Limitation Less expensive Strain on yarn is less No possibility of fluff or lint accumulation on needle Good for warp knitting machine Required an additional element to close the beard during knitting High wear and break easily Limiting productivity A knitting section occupies a considerable amount of space Individual loop formation has to be achived by a loop forming element, this leads to a more complicated Breaded needle

7. Latch Needle Characteristics: 1. Most widely used in weft knitting. 2. More expensive needle than the bearded needle. 3. Self acting or loop controlled. 4. Work at any angle. 5. Needle Depth determines the loop length. 6. Variation of the height of reciprocating produces knit, tuck or miss stitch. Characteristics Latch needle

8. The Hook : The hook which draws and returns the new loop. The slot or Saw Cut : This slot receives the latch blade . Features-hook Latch needle

9. Features The Cheeks or Slot Walls : It is either punched or riveted to fulcrum the latch blade. The Rivet : The rivet which may be plain or threaded. This has been dispensed with on most plated metal needles by pinching the slot walls to retain the latch blades. The latch blade : This latch blade locates the latch in the needle . Latch needle

10. The latch blade : This latch blade locates the latch in the needle . Features Latch needle

11. The latch spoon : The latch spoon is an extension of blade and bridges the gap between the hook and stem . Features-latch and latch spoon Latch needle

12. 7. The stem: The stem of latch needle carries the loop in the clearing on rest position. 8. The Butt: Butt of latch needle enables the needle to be reciprocated. 9. The Tail: The tail is an extension below the butt giving additional support to the needle and keeping the needle in its trick Features Latch needle

13. Latch needle Latch needle

14. Advantages Limitation Major advantages of being self acting or loop controlled, so that individual movement and control of the needle enable stitch selection to be achieved. Ideally suited for use with computer controlled electronic selection devise. Latch needle can operate at any angle. Variation of the height of vertical can produce knit, miss and tuck loop which helps to manufacture different design fabrics. Latch needle are thick and rigid, so any deflection id design effect on fabric Needle deflection is difficult It imposes a certain strain on yarn There is also possibility of fluff or lint accumulation on the latch due to rubbing of the yarn on needle Latch needle

15. The tubular pipe needle has its tongue sliding inside the tube of the open hook. The open-stem ‘pusher type’ or slide needle Compound needle Types tongue sliding pusher type

16. Features Compound needle Compound needles consist o two separately controlled parts- the open hook and the sliding closing element (tongue, latch, piston, plunger) It is most popular in warp knitting machines Strain in not put on the yarn Both members of compound needle have a straight, thus knitting speed can be increased. These needle are very expensive

17. Thanks