Dialcylinder Knitting Machines

Despiece Horno Circuito Electrico

On dial-cylinder circular knitting machines the cylinder is considered the front needle-bed while the dial is considered the rear needle-bed. Both needle-beds feature grooves guiding the needle movements. The needles used for dial-cylinder circular knitting machines are mainly latch needles some manufacturers however use compound needles. Large-diameter dial-cylinder knitting machines can be divided into different categories according to the knitted good they manufacture - circular knitting...

Takedown and Winding Motions

Feeder Dubied Machine

The fabric take-down and winding motions have been designed to facilitate stitch knock-over and fabric take-down procedures. The take-down and winding functions are kept separated in order to allow a smooth running of the machine and avoid possible fabric distortions. The take-down motion consists of 2 or 3 rollers placed beneath the cylinder. In the simplest system configuration i.e. the two-roller the fabric passes between two rollers that stretch it by rotating in opposite directions....

Highbutt Needles and Lowbutt Needles

Butt Needles

The latch needle can have two different butt heights which make it a high-butt needle or a low-butt needle picture 27 . The assembly of high-butt needles and low-butt needles on the knitting machine allows different selection and different manufacturing work ways, according to the positions of the tucking and looping cams picture 28 . Picture 28 - The different positions of the raising cam

Basic Structure of a Largediameter Circular Knitting Machine

Circular knitting machines include a number of fundamental elements, based on similar mechanical principles with some small changes according to the different models - The machine base. The most recent trend among circular machine manufacturers is to build knitting machines with a solid yet smaller base and an architecture that facilitates access to the machine components for routine operations to be carried out during setting up procedures and production - The core of the machine, which...

Loopwheel Circular Knitting Machines

Loop Wheel Circular Knitting Machine

Loop-wheel circular knitting machines, or mailleuse in French picture 123 , incorporate a circular needle bed in which spring beard needles are arranged horizontally. Loop-wheel circular knitting machines, or mailleuse in French picture 123 , incorporate a circular needle bed in which spring beard needles are arranged horizontally. Picture 123 - A loop-wheel circular knitting machine During the stitch formation cycle picture 124 the needle moves close to the looping wheel. The corresponding...

Flat Knitting Machines

Manual Flat Knitting Machine

The flat knitting machine is a two-bed machine (picture 20). The most important mechanical features of a flat knitting machine are - two needle-beds made up of flat grooved plates - a carriage provided with cam-locks for needle control 1. Inclined by 90 -100 with respect to one another, with a staggered arrangement of the grooves accommodating latch needles or compound needles. The two flat beds are the front needle-bed (indicating the needle-bed closer to the operator) and the rear needle-bed...

Stitch Formation Motions

Mayer Sinker Plush Knitting

Circular knitting machines, both the single or double-bed types according to our initial classification, can incorporate various stitch formation motions depending on the machine's technical features. The Main Components of a Single-bed Machine Single-bed circular knitting machines are equipped with only one series of needles sliding in the grooves of a circular needle-bed. The needles are usually latch needles but some manufacturers have designed machines equipped with compound needles. The...

Classification of Warp Knitting Machines

Raschelmachine

Warp knitting machines can be divided into flat warp knitting machines and Raschel machines. They can have a single or a double needle-bed. Flat warp knitting machines are equipped with spring beard needles or compound needles, while Raschel machines incorporate latch needles or compound needles. The sinkers of flat warp knitting machines feature a nose, a throat and a breast, and pull the fabric perpendicularly to the needle direction. Raschel machines incorporate sinkers with nose only as the...

Tuck Stitch Formation

Needle Formation Miss Cam

Two consecutive strokes of the carriage are necessary to form the tuck stitch picture 30 . During the first stroke, the tucking cam of the cam is out and the looping cam is not working. Therefore the needle only raises as high as the tucking plane the loop cannot slip on the stem, and therefore remains inside the hook after having completely opened the latch, in this way allowing the yarn to be fed. During the second stroke both the tucking cam and the looping cam are activated the needle rises...

Basic Technology General Remarks

Loop Length Knitted Fabric

A discussion about knitting technology must be dealt both as an analysis of the technical cycles of knitting as regards the machines used and the mechanisms involved in the process, and as an analysis of the technology of knitted fabrics in terms of their structures and their physical and mechanical properties. In its simplest form, a knit fabric picture 1 is made by the longitudinal and vertical repetition of the same element, the loop, which is the basic element of the fabric. The loop...

Classification of Knitting Machines

Warp Knitting Machines

The machines used for the manufacturing of knit fabrics can be divided into machines with individually driven needles and needle bar machines. The former type of machine incorporates needles which are moved individually by cams acting on the needle butt they are used for producing weft knits and are subdivided into circular knitting machines and flat-bed knitting machines. The needles used can be latch needles or compound needles. The needle bar machines incorporate needles which move...

Flat Doublebed Warp Knitting Machines and Doublebed Raschel machines

Double Bed Flat Knitting Machine

The stitch formation cycle on double-bed machines is similar to single-bed machines. The difference is that these machines incorporate two needle beds with their hook turned outwards, two grooved plates supporting the fabric and a single group of bars working alternatively with both the needle-beds, forming the stitch first with the needles of one bed and then with the needles of the other. Double-bed machines can incorporate spring beard needles picture 135 , in this case they Picture 137 -...

Terry Knitting Machines

Knitted Terry Stitch Formation

For the manufacturing of terry cloth, it is necessary to use single-bed circular knitting machines equipped with special sinkers featuring a longer nose than standard sinkers and special thread guides which feed simultaneously two yarns, one called ground yarn and the other one called face yarn, into the same needle. During the stitch formation, the sinkers move forward and position themselves between the two yarns. The ground yarn fits under the sinker nose, inside the throat, and carries out...

Circular Knitting Machines Introduction

All over the world, the majority of knit fabrics are manufactured on circular knitting machines. The high performance level of these machines, the different materials and the range of yarn counts that they are able to process, the wide variety of designs and stitches are some of the reasons which have granted circular machines the market leadership in the knitting sector. The variety of knit fabrics that can be manufactured with these machines can meet the needs of a very large end user market...