针织学(双语)课件Chapter2

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2.3.2 Knitting cams 针织三角
• cam-plate/三角座,三角底板
• raising cam (clearing cam)/ 起针三角,退圈三角 • stitch cam/成圈三角 • upthrow cam/回针三角
• knock-over cam/脱圈三角
• guard cams/护针三角
Chapter 2
Basic mechanical principles of knitting technology
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2.1 The sinker 沉降片

The functions of the sinker
•Loop formation 成圈 •Holding-down 握持 •Knocking-over 脱圈
movements of the elements in
their correctly-timed relationship.
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2.3.2 Knitting cams 针织三角
Two arrangements exist:
(a)Revolving cylinder machines/针筒转动针织机 (b)Reciprocating cam-carriage flat machines/三角座移动横机 or rotating cam-box circular machines/三角座转动圆机
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2.2 The jack 底脚片,挺针片
It may be used to provide versatility of latch needle
selection and movement.
It is placed below the needle and has its own operating butt and cam system.
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2.3.1 Engineering cams 工程凸轮
The drive is transmitted and adapted via cam-followers/凸轮转 子, levers/连杆, pivots and rocker shafts/摆杆. It produces all the required
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2.1 The sinker 沉降片
•The first function: loop formation 成圈
On bearded needle weft knitting machines of the straight bar frame and sinker-wheel type/带弯纱轮的 平型纬编钩针机, the main purpose of a sinker is to sink/弯曲 or kink/扭结 the newly laid yarn into a loop.
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带弯纱轮的平型纬编钩针机
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•The second function: holding-down 握持
N: nib of nose of sinker 片鼻
T: throat 片喉
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•The third function: knocking-over 脱圈
B: belly 片颚
V: the verge or upper surface of the trick-plate 针槽板
stitch cam.
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• By causing a warp yarn
guide to wrap the yarn
loop around the needle. swinging motion/ 针间摆动 lateral shogging (or racking) motion/梳栉横移
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lapping movement /垫纱运动
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2.3 Cams 三角,凸轮
Cams are the devices which convert the rotary machine drive into a suitable reciprocating action for the
needles and other elements.
The cams are of two t来自百度文库pes, engineering cams/工程凸轮 and knitting cams/针织三角.
approach from the
beard side.
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• By causing latch needles to draw their
own needle loops/圈干
down through the old loops as they descend,
one at a time, down the
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• bolt cam/进出三角
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2.4 The three methods of forming yarn into needle loops
• By sinking the yarn into the space between
adjacent needles using
loop forming sinkers or other elements which