Workstation of a two-for-one twisting or cabling machine for the production of carpet yarn

Abstract

The invention provides a workstation (2) of a two-for-one twisting or cabling machine (1) for production of carpet yarn, which includes a winding device (11) having a package cradle (17) with two frame arms for rotatable mounting of an empty tube (18) or twisting package (16), a package drive roller (19) for frictionally driving the twisting package (16), a yarn traversing device (20) for traversing transfer of a yarn to the twisting package (16), an advance roller (23) for regulating a yarn tension, and a cover (21) in area of the advance roller (23) with an opening (22) for yarn guided through the yarn traversing device (20) to the twisting package (16). The package cradle (17) has at least one movable, partially rotatable frame arm and designed so an empty tube (18) with length of at least 315 mm is insertable, that the package drive roller (19) has length of at least 286 mm, that yarn traversing device (20) has traversing stroke of at least 11 inches, and that opening (22) in the cover (21) corresponds with the yarn path arising due to the traversing stroke.

Description

technical field [0001] The invention relates to a station of a two-for-one twister or a direct twister for the manufacture of carpet yarns, a two-for-one twister or a direct twister having such a station and a method for operating a two-for-one twister or a direct twister. Background technique [0002] Twisting or direct twisting or double twisting is a method of mechanical yarn finishing to produce twists with defined performance properties. In the case of the two-for-one twisting method two or more yarns are combined into one twisted yarn by twisting, while straight twisting is a special twisting method in which two yarns are twisted together without the twist being acquired by the individual yarns themselves . The advantage of twisting is its higher tensile strength. [0003] The term "yarn" shall include within the scope of this application all threadlike structures such as yarns, membrane split strands, hoses and strips etc. For the sake of simplicity, the term "yarn...

AI Technical Summary

Problems solved by technology

[0011] Standardized empty bobbins and twist bobbins therefore limit the travel length of the twist bobbins in subsequent post-processing

The increase in the diameter of the twisted bobbin is not practical, since the creel for the subsequent subsequent processing is limited to a maximum bobbin diameter of approx. 400 mm

Increasing the winding density of twisted bobbins to increase the length of travel is also not practical for quality reasons, since increased winding density not only adversely affects yarn properties such as fine curls in the wound yarn, but also adversely affects Behavior of Unwinding Yarn from Twist Package

[0012] As a result, the requirements of the downstream processing industry for larger travel lengths of twisted bobbins cannot be met without cost-intensive construction and retrofit measures in the downstream processing plant

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