Textiles: fiber preparation – Working – Crush rolls
Patent
1999-05-03
2000-09-19
Calvert, John J.
Textiles: fiber preparation
Working
Crush rolls
19150, 19157, 57412, D01B 304
Patent
active
061193127
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a device mounted on a spinning preparation machine, e.g. a carding machine, draw frame or the like, for guiding and compressing a sliver bundle consisting of at least one sliver. The device comprises at least two funnel-shaped guide elements, arranged one behind the other, which have a plurality of successively arranged wall surfaces along which the sliver bundle glides and is concentrated, wherein at least one wall area is provided between the input opening and the output opening in which the sliver bundle comes in contact with the outside air through an opening.
A known device mounted on a carding machine has two funnel-shaped guide elements, arranged successively between a web-guiding element and a web trumpet, wherein the one funnel-shaped guide element that is facing downward is opened completely in the wall region while the other funnel-shaped guide element that is facing upward is completely open in the wall region. The two guide elements are each formed by three wall elements, two of which are facing each other. Approximately at a right angle to this, the two opposite-arranged wall surfaces are connected respectively on one side with a third wall surface, whereas the other, opposite arranged side, is designed as a through opening, meaning the guide element is open toward one side. The two opposite arranged wall surfaces of the guide elements are --seen one behind the other --aligned parallel to each other. The wall surfaces of the web trumpet are closed on all sides. The problem with this device is that inside each guide element, the fiber material compression and the air escaping the fiber material as a result of the compression are not symmetrical. The compression and the escaping air are also not symmetrical in relation to the two guide elements.
SUMMARY OF THE INVENTION
It is therefore the object of the invention to create a device of the above-described type which avoids the aforementioned disadvantages and for which the compression of the fiber material and the air escaping the fiber material in particular are evened out.
This object and others to become apparent as the specification progresses, are accomplished by the invention, according to which, briefly stated, the device for guiding and compressing a sliver running through the device in a travel direction includes first and second guide elements adjoining one another in the travel direction. Each guide element has two opposite first sides and two opposite second sides. Each guide element is formed of two face-to-face disposed wall elements which are spaced from one another perpendicularly to the travel direction and which form the first sides of the guide element. The second sides of each guide element are open in a direction perpendicular to the travel direction. The first and second guide elements are offset at an angle with respect to one another as related to the travel direction.
The device consists of two and more guide elements, wherein according to the invention each separate guide element consists of only two opposite arranged wall elements, so that the fiber material is compressed in one direction only. Owing to the fact that each wall element is open toward both sides, equal amounts of air can escape toward both sides. The compression and the air escape are balanced in this way. On the one hand, the unchecked, lateral expansion of the fiber material toward the open sides is limited or prevented by the fact that respectively adjacent, successive wall elements are arranged at an angle, preferably a 90.degree. angle, to each other. On the other hand, it is simultaneously possible for the compression air to escape unhindered through the openings on both sides of each individual guide element. Furthermore, the friction caused by the wall surfaces is reduced inside each guide element, and there is no friction at all on the side wall surfaces because of the side openings. With respect to one guide element, the compression occurs respectively only in one direction, e.g. in the l
REFERENCES:
patent: 3635006 (1972-01-01), Fehrer
patent: 4630336 (1986-12-01), Schopwinkel et al.
patent: 5461757 (1995-10-01), Leifeld
patent: 5619772 (1997-04-01), Leifeld
patent: 5630251 (1997-05-01), Leifeld
patent: 5673462 (1997-10-01), Leifeld
Calvert John J.
Kelemen Gabor J.
Trutzschler GmbH & Co. KG
Welch Gary L.
LandOfFree
Device mounted on a spinning preparation machine, such as cardin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device mounted on a spinning preparation machine, such as cardin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device mounted on a spinning preparation machine, such as cardin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1059492