ISO 21485 pdf download

ISO 21485 pdf download Textile machinery — Draw frame for cotton spinning — Vocabulary and principles of construction
Scope
This International Standard establishes a vocabulary of terms related to, and the principles ofconstruction of, draw frames and their components, used for cotton spinning in the textile industry.
NOTE 1 The draw frame design is not required to conform with the figures shown in this InternationalStandard, which are given only as examples ofthe different types
NOTE 2 In addition to terms used in English, one ofthe three official 1SO languages,this International Standarcgives the equivalent terms in German; these are published under the responsibility of the member body forCermany (DIN). However, only the terms and definitions given in the official language can be considered as ISOterms and definitions.
Terms and definitions
1 Basic terms
1.1
draw frame
textile machinery consisting of a delivery unit (1.3) employed to straighten and parallelize the fibres bydrafting, to homogenize the sliver by means of doubling (4.1) and to blend and de-dust the fibres
1.2
autoleveller draw frametextile machinery consisting of a delivery unit (1.3) employed to straighten and parallelize the fibres bydrafting, to homogenize the sliver by doubling (4.1), to blend and de-dust, if applicable, the fibres and tocompensate any measured deviation ofthe fibre mass by means of a variable draft superimposed on thenominal draft (4.2)
1.3
delivery unit
working point for filling a sliver can (31)
2 Machine sides, dimensions (see Figure 1
2.1right sideRtextile machine side located to the right as seen facing toward the direction of fibre flowNote 1 to entry: See ISO 92.
2.2left side
textile machine side located to the left as seen facing toward the direction of fibre flowNote 1 to entry: See ISO 92.
3.1
sliver can
round or rectangular container for the deposit of card, comber or draw frame sliver
Note 1 to entry: Round sliver cans are defined in ISO 93-1 and ISO 93-2, rectangular cans in ISO 16853.
3.2
creel [feed]
positively driven rollers for pulling feed sliver from the sliver can (3.1) or [and] static sliver guides 3.3
sliver guide
device for guiding slivers at the entry to the drafting system (3.4)
3.4
drafting system
device with several consecutive roller pairs running at increasing speeds and a pressure bar (3.4.1) to draft the infed sliver
3.4.1
pressure bar
static sliver guide component installed in the main drafting zone to guide floating fibres
3.4.2
roll bearing
bearing for the bottom rollers (3.4.4) in the drafting system (3.4)
3.4.3
top rollers
friction-driven or positively driven rollers, self-weighted or with additional load, resting on the bottom
roller and gripping and carrying the sliver
[SOURCE: ISO 2205:1975]