Textiles: fiber preparation – Working – Picking
Reexamination Certificate
2000-08-30
2001-12-11
Calvert, John J. (Department: 3765)
Textiles: fiber preparation
Working
Picking
C019S200000, C019S205000
Reexamination Certificate
active
06327745
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application claims the priority of German Application No. 199 41 446.7 filed Aug. 30, 1999, which is incorporated herein by reference.
BACKGROUND OF THE INVENTION
The invention relates to an apparatus for opening and cleaning fiber material. The apparatus may be of the type which has two horizontally spaced, parallel, codirectionally rotating first and second opening rolls (beater rolls) disposed in a housing above grid segments. Imaginary circles circumscribable about the two opening rolls almost touch one another. A vertical inlet pipe merges into the housing and is oriented tangentially to the first opening roll, as viewed in the direction of material advance. A horizontal outlet pipe extends from the housing at a side which is remote from the inlet pipe. The fiber material is introduced into the cleaner housing by the inlet pipe and is directed to the first opening roll. After treatment by the opening rolls, the fiber material leaves the housing through the horizontal outlet pipe.
Conventionally, the fiber material is pneumatically drawn from a fiber processing apparatus and pneumatically driven to the fiber opener/cleaner. The fiber material enters the inlet pipe together with the transporting air stream. It is a disadvantage of such an arrangement that the transporting air stream, which is relatively powerful because of the suction effect, adversely affects the opening and cleaning process. It is a further drawback that the pneumatic fiber material transport requires a relatively high technological outlay.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an improved apparatus of the above-outlined type from which the discussed disadvantages are eliminated, which is structurally particularly simple and which makes possible an improved fiber opening and cleaning process.
This object and others to become apparent as the specification progresses, are accomplished by the invention, according to which, briefly stated, a fiber processing assembly includes a fiber processing machine having an inlet and an outlet; an arrangement for introducing fiber material into the fiber processing machine through the inlet; a fiber opening and cleaning machine having an inlet and an outlet and being disposed underneath the fiber processing machine; and an arrangement for advancing the fiber material from the fiber processing machine to the fiber opening and cleaning machine substantially solely by gravity.
By arranging the fiber processing device above the intake pipe, the fiber material proceeds by gravity downwardly into the intake pipe. The apparatus according to the invention is structurally significantly simplified by virtue of the absence of a pneumatic transporting air stream in the intake pipe. Further, the cleaning effect is improved by the fact that the fiber material is advanced within the opener/cleaner only by the opening rolls and may be assisted by an axially supplied air stream. In this manner a separation of functions between the admission of the fiber material to, and its guidance through, the opener/cleaner is effected.
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Calvert John J.
Kelemen Gabor J.
Trutzschler GmbH & Co. KG
Venable
Welch Gary L.
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