Needles and system parts for flat knitting machines
From the needle to the end product – Flat knitting machines use up to four needle carriers arranged in an upward sloping V-shape opposite each other. The needle movement is implemented by cams. These cams are fitted to the carriages of the flat knitting machine. The carriage moves horizontally backwards and forwards over the needle carriers, producing course after course.
State-of-the-art flat knitting machines not only carry out complex loop forming sequences, but also have to cope with wide-ranging functional and quality requirements. Alongside a wide variety of patterning and color possibilities, end users also demand flexible use of yarn. Latch needles, compound needles and system parts are vital core components at the heart of every flat knitting machine.
Flat knitting products
We have a comprehensive and constantly growing range of latch and compound needles with or without transfer function. In addition to high-performance needles for all types of knitting machines, Groz-Beckert offers a selected portfolio of system parts including coupling parts, intermediate jacks and selecting jacks.
Flat knitting needles
Flat knitting needles
Wire butt needle
In addition to state-of-the-art flat knitting needles for latest-generation machines, Groz-Beckert continues to manufacture wire butt needles of the kind found in old, hand-operated flat knitting machines.
Latch needles with and without transfer function
Latch needles without transfer function are mainly employed in collar and glove knitting machines. Since very rigid collars are knitted, the needle must be very stable. In contrast, for latch needles with transfer function there are essentially two concepts: latch needles with transfer clip and latch needles with an additional slot on the back of the needle shank. With precisely executed transfer elements and exact edge rounding, Groz-Beckert needles provide high security in the transfer process.
Spring-loaded latch needle with transfer function
In spring-loaded latch needles a latch spring is installed under the needle latch. The latch spring provides for the automatic raising of the needle latch in closing and open position, thereby safeguarding yarn insertion and preventing loose loops from rebounding. Using spring-loaded latch needles from Groz-Beckert helps to produce a uniform loop structure, even when knitting bulky and fleecy yarns or yarns with several threads.
Compound needle with transfer function
Compound needles consist of two parts: the needle part and the closing element. In the loop formation process the closing element takes on the function of covering the hook in order to form another loop.
System parts
System parts
Coupling parts
Coupling parts are used as connecting elements between needles and selecting jacks. The reliability of the interaction of needle and coupling part is ensured by closely collaborating with machine builders. Joint development projects facilitate process reliability and high quality products.
Intermediate jack
The intermediate jack is used as connecting piece between needle and selecting jack. It ensures that a selected needle is securely positioned and performs the right knitting function. In contrast to other coupling parts, the intermediate jack is not engaged. This means that it is not connected to the needle, but is located separately in the needle trick and can be moved separately.
Selecting jacks and holding-down jacks
Secured spring force, constant reaction time and good rounding ensure a reliable functioning of the selecting jacks. This prevents selection errors, thus increasing customer profits. The requirements for selecting jacks constantly increase with higher machine speeds, higher feeder densities and finer gauges. Optimized surfaces at crucial points, weight reduction and an optimal design of the selecting jacks and holding-down jacks in close cooperation with the machine builders ensure functionality and reliable selection.
Fields of application
Typical application examples are the production of outerwear, such as sweaters, jackets, vests and accessories, such as collars, cuffs, caps, but also 3D molded parts for technical applications such as seat covers.
Apparel textiles
In the fashion sector, flat knitting machines are mainly used for the production of sweaters, collars and gloves. With this technology, all parts can be knitted into shape specifically.
Knitted shoes
Especially in warmer seasons, shoes should be breathable and lightweight. Special knitting techniques can be used to produce tightly knitted shoe uppers from just one piece, which enable these properties.
Medical textiles
The possibility to form a defined shape and create specific functions already in the knitting process makes flat knitting a very interesting technology for the production of compression stockings and bandages.
Technical textiles
Technical textiles have special properties. Their areas of application are almost unlimited and people encounter them every day – whether in sports, in the car or at work.
Automotive textiles
Flat knitting technology enables the production of knitted seat covers, e.g. for the automotive industry. High quality standards, pattern and design variations play an important role here.
Custom-tailored solutions
Groz-Beckert offers customized systems and solutions in accordance with customer needs. As a development partner, Groz-Beckert maintains good relationships with many renowned machine builders and knitting mills.
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