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US 6,182,425 B2Granted
Process and apparatus for filling cans with fiber band
AssigneeRieter Ingolstadt Spinnereimaschinenbau AG
InventorsFrank Ficker, Albert Kriegler
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AssigneeRieter Ingolstadt Spinnereimaschinenbau AG
InventorsFrank Ficker, Albert Kriegler
Estimating the term…
Upon filling cans with fiber band, the movable bottom of the cans, as the filling process proceeds, moves downwardly from an initial upper to a lower final position. As this happens, between two elements, one inside, one outside the circumferential shell of the can, a force field is built up in such a way that the element inside the can supports the can bottom and because of the force field, this bottom is held at the same elevation as the element outside of the can. Further, the desired operating height of the can bottom can be correspondingly held. For the lowering of the can bottom, one of the two elements between which the force field exists, is moved relative to the other in the direction of the lower final positioning of the can bottom and the remaining element follows after, because of said force field, until both elements again stand across from one another at the same height. Along with this, for the support of the can bottom a force, directed at right angles to the circumferential shell, is produced to form a braking force directed contrary to the weight of the loaded can bottom.
A process for filling cans with fiber band in a textile machine wherein the cans have a vertically movable can bottom upon which the fiber band is deposited, the can bottom supported within a circumferential shell so as to move downwardly from an initial upper position to a final lower position as filling of the can proceeds, said process comprising generating a force field between elements located inside the circumferential shell and outside the circumferential shell in such a manner that the element inside the circumferential shell supports and holds the can bottom at generally the same elevation as the element outside of the circumferential shell.
An apparatus for filling cans with fiber band in a textile machine wherein said cans include a vertically movable can bottom enclosed by a circumferential shell, said apparatus comprising:
An apparatus for filling cans with fiber band in a textile machine wherein said cans include a vertically movable can bottom enclosed by a circumferential shells, said apparatus comprising:
Dependencies are inferred from the claim text.
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Depositing materials in cans or receptacles: apparatus in which the depositing device or the receptacle is rotated
Kinds or types: cans or receptacles, e.g. sliver cans
Linear: magnetic, e.g. induction motors
Handled filamentary material: textiles threads or artificial strands of filaments
Term ended 24 Mar 2019 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention concerns a process for the filling of cans with fiber band, and further concerns an apparatus for the execution of said process.
Customarily, a can is provided with an interiorly located, combined system of screw shaped springs and pantographs (DE 42 34 793 C2) to bring about a lowering of the bottom of the can to correspond with the degree to which the can is filled and to prevent the upsetting of the bottom of the can. The fabrication of this kind of scissors linkage or pantograph is, however, expensive in regard to costs as well as to maintenance, especially in view of the fact that pantographs of this type must be provided in every single can.
Further in common knowledge is the provision of longitudinal slots oppositely situated on the can, through which slots, take-along elements connected to the can bottom reach to the outside, where they operate together with provided lifting units which are independent of the cans (DE 44 07 849 A1). For this purpose, special cans are required, which, moreover, as a result of the slots extending over practically the entire length of the can, leads to distortion of the can shell. Besides this, the danger is present, that the fiber band will be damaged by external air borne particulate in the area of the said slots.
FIG. 1 in schematic presentation, a can situated beneath a filling head with the support apparatus for the can bottom,
FIG. 2 in side view, a modified design of the of the support apparatus shown in FIG. 1,
FIG. 3 in a schematic presentation, a further modification of the apparatus in accord with the invention and
Reference is now made to preferred embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided as an explanation of the invention and not meant to limit the invention. It should be understood that various modifications and variations can be made in the invention without departing from the scope and spirit of the invention.
The invention is first explained with the help of FIG. 1, which simply shows the required elements necessary for the understanding of the invention.
At a filling station 1 of a textile machine delivering fiber band 2, for instance, this being a stretch works (draw frame), a turntable 10, driven in the usual way, is disposed above its receiving can 3, for the purpose of uniformly distributing the fiber band 2 during its deposition in said can 3. In the course of the fiber band 2, is located a length measuring device 61 for the measurement of the length of the band 2 brought to the can 3.