Knitting needles

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knitting needles

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  • 1. Presented By Jijo M DanielPGDM (textiles)14tm07

2. TYPESTHE BEARDEDNEEDLE3 TYPES OF KNITTING NEEDLESTHE COMPOUNDNEEDLETHE LATCHNEEDLEthe hook opening andclosing devicea system allowing theneedle to move andform the loop.the hook, which takesand retains thethread to be looped 3. FEATURES The bearded or springneedle was the first type ofneedle to be produced. It is the cheapest andsimplest type tomanufacture as it is madefrom a single piece of metal The bearded needle isessentially a frame needle,the needles being fixed tomove 4. PARTS The head, where the stem is turned into ahook to draw the new loop through theold loop. The beard, which is the curveddownwards continuation of the hook thatis used to separate the trapped new loopinside from the old loop as it slides off theneedle beard. The stem, around which the needle loopis formed. The eye, or groove, cut in the stem toreceive the pointed tip of the beardwhen it is pressed, thus enclosing the newloop. The shank, which may be bent forindividual location in the machine or castwith others in a metal lead. 5. BREADED NEEDLE AND KNITTING MACHINE PARTS 6. Advantages Limitation Less expensive Strain on yarn is less No possibility of fluffor lint accumulationon needle Good for warpknitting machine Required an additionalelement to close thebeard during knitting High wear and breakeasily Limiting productivity A knitting sectionoccupies a considerableamount of space Individual loop formationhas to be achived by aloop forming element, thisleads to a morecomplicated 7. CharacteristicsLatch Needle Characteristics:1. Most widely used in weftknitting.2. More expensive needle thanthe bearded needle.3. Self acting or loop controlled.4. Work at any angle.5. Needle Depth determines theloop length.6. Variation of the height ofreciprocating produces knit, tuckor miss stitch. 8. Features-hookThe Hook: The hook which draws and returnsthe new loop.The slot or Saw Cut: This slot receives the latchblade. 9. FeaturesThe Cheeks or Slot Walls: It is either punched or riveted tofulcrum the latch blade.The Rivet: The rivet which may be plain or threaded. Thishas been dispensed with on most plated metal needlesby pinching the slot walls to retain the latch blades.The latch blade: This latch blade locates the latch in theneedle. 10. FeaturesThe latch blade: This latch blade locates thelatch in the needle. 11. Features-latch and latch spoonThe latch spoon: The latch spoon is an extension of blade and bridgesthe gap between the hook and stem. 12. Features7. The stem: The stem of latch needle carriesthe loop in the clearing on rest position.8. The Butt: Butt of latch needle enables theneedle to be reciprocated.9. The Tail: The tail is an extension below thebutt giving additional support to the needleand keeping the needle in its trick 13. Latch needle 14. Advantages Limitation Major advantages of beingself acting or loopcontrolled, so that individualmovement and control ofthe needle enable stitchselection to be achieved. Ideally suited for use withcomputer controlledelectronic selection devise. Latch needle can operateat any angle. Variation of the height ofvertical can produce knit,miss and tuck loop whichhelps to manufacturedifferent design fabrics. Latch needle are thickand rigid, so anydeflection id design effecton fabric Needle deflection isdifficult It imposes a certain strainon yarn There is also possibility offluff or lint accumulationon the latch due torubbing of the yarn onneedle 15. Typespusher type tongue slidingThe tubular pipe needle has its tonguesliding inside the tube of the openhook.The open-stem pusher type or slide needle 16. Features Compound needles consist otwo separately controlled parts-theopen hook and the slidingclosing element (tongue, latch,piston, plunger) It is most popular in warp knittingmachines Strain in not put on the yarn Both members of compoundneedle have a straight, thusknitting speed can be increased. These needle are very expensive