Knitting needles

17
Presented By – Jijo M Daniel PGDM (textiles) 14tm07

description

knitting needles

Transcript of Knitting needles

Page 1: Knitting needles

Presented By –

Jijo M Daniel

PGDM (textiles)

14tm07

Page 2: Knitting needles

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

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• 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

FEATURES

Page 4: Knitting needles

• 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’.

PARTS

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BREADED NEEDLE AND KNITTING MACHINE PARTS

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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

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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

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The Hook: The hook which draws and returns

the new loop.

The slot or Saw Cut: This slot receives the latch

blade.

Features-hook

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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.

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The latch blade: This latch blade locates the

latch in the needle.

Features

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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

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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

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Latch needle

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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

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The tubular pipe needle has its tongue

sliding inside the tube of the open

hook.

The open-stem ‘pusher type’ or slide needle

Types tongue sliding pusher type

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Features

• 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

Page 17: Knitting needles