US3712682A - Apparatus for feeding fiber material into a chute - Google Patents

Apparatus for feeding fiber material into a chute Download PDF

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Publication number
US3712682A
US3712682A US00875094A US3712682DA US3712682A US 3712682 A US3712682 A US 3712682A US 00875094 A US00875094 A US 00875094A US 3712682D A US3712682D A US 3712682DA US 3712682 A US3712682 A US 3712682A
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United States
Prior art keywords
cylinder
chute
set forth
combination
duct
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Expired - Lifetime
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US00875094A
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English (en)
Inventor
R Binder
R Wildbolz
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/08—Air draught or like pneumatic arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots

Definitions

  • a carrier medium e.g., an air stream.
  • deflecting elements are also known which are arranged in the chute inlet opening as reflectors and which are provided with a straight surface extending across the transporting air stream into the upper part of the chute.
  • the fiber flock carrying air stream is divided by such deflecting elements into part air streams which flow past the deflecting element fromabove and below and which join again behind the elements.
  • Such deflecting elements are advantageous in that fiber entanglements or accumulations are prevented by the straight form of the surface facing the incoming fiber flocks, but, as the part air stream drag fiber flocks along, uniform fiber flock deposition in the chute is not ensured.
  • the invention provides an apparatus, for example, for spinning machines, for supplying fiber material in flock form from a pneumatic flock transporting system consisting of a pressurized duct for transporting fiber flock carrying air into a chute branching off from the duct.
  • the apparatus includes a deflecting element defined by a smooth surfaced cylinder which is rotatable about a longitudinal axis and which is disposed at the branch .of the chute from the duct.
  • the cylinder is mounted with a slight clearance from the back wall of a chute and extends into the transporting duct to deflect a substantial portion of the fiber flocks into the chute.
  • each chute is provided with a deflecting cylinder.
  • each cylinder is slightly spaced from the back wall of the chute.
  • each succeeding cylinder can be mounted to project further into the transporting duct than the preceeding cylinder so as to compensate for reductions in pneumatic pressure from one chute branch off point to the next.
  • Thechutes may be formed with curvilinear back walls which are disposed to the rear of the cylinders with respect to the air flow or may be formed with straight walls with the cylinders arranged directly above the walls.
  • the walls can be provided with adjustable separator heads which serve to adjust the spacing between the cylinders and walls.
  • the separator heads can be fixed to the cylinders and the cylinders can be adjustably mounted with respect to the chute walls. In such instances, the space between a separator head and cylinder will remain constant as the cylinder is adjusted to project more or less into the transporting duct.
  • the cylinders can be positively driven or freely mounted for rotation. Also, the cylinders can be axially mounted or eccentrically mounted. '7
  • FIG. 1 illustrates a schematic longitudinal section of a portion of a transporting duct with a chute branching off incorporating a deflecting cylinder according to the invention
  • FIG. 2 illustrates a schematic longitudinal section of a portion of a common transporting duct with a plurality of individual chutes utilized with a plurality of deflecting cylinders according to the invention
  • FIG. 3 illustrates a schematic longitudinal section of a portion of a transporting duct with parallel neighboring feed chutes and deflecting cylinders of the invention in a fiber flock blending machine
  • FIG. 4 illustrates a fragmentary perspective view of an alternative separator head according to the invention.
  • FIG. 5 illustrates an alternative of the arrangement shown in FIG. 3.
  • a connecting piece 2 is inserted into, and by means of outwardly directed flanges 4 and 5 connected to, a pressurized transporting duct 1 through which a fiber flock carrying air stream flows in the direction of arrow A originating from a machine (not shown) delivering fiber flocks.
  • A' rectangular chute 6 is connected to the connecting piece 2 by means of a similar flange 7 in such manner that the chute front and back walls 8, 9 extending across the transporting duct 1 are the wider walls of the rectangular chute 6.
  • the chute 6 can lead to any type of device for further processing, transporting or taking up of the fiber flocks, such as cards, openers, cleaners, conveyor belts, chambers the lower ends of which are open or provided with take-off rolls.
  • the cross sectional area of the connecting piece 2 widens immediately behind the connecting flange 4 with the lower wall 10 being slightly inclined downwardly relative to the duct 1 and, via a curvature l1, merging into the front chute wall 8 of the chute 6.
  • the back wall 9, as seen in the direction of the material flow, of the chute 6 extends upwardly to a somewhat higher position or elevation than the front chute wall 8 and at the upper edge 12 is bent into the direction of the material flow.
  • a subsequent curvilinear section 13 is curved so far upwardly that a following section 14 of the lower wall is slightly inclined downwardly towards the connecting flange 5.
  • a deflecting cylinder 16 is arranged in the connecting piece 2 at the branch off point of the chute 6 and is mounted to rotate about its longitudinal axis 15. This longitudinal axis 15 is coplanar with the plane determined by the back chute wall 9 of the chute 6.
  • the cylinder 16 is provided with a smooth surface and extends across the direction of the material flow, i.e., transversely of the duct 1, over the full inside width (not shown) of the back chute wall 9 and is provided with a drive mechanism which rotates the cylinder 16 in the direction indicated by the arrow B. Since such a drive mechanism would be of any suitable known construction, such need not be further described.
  • the incoming fiber flocks always contact a fiberfree surface of the cylinder 16.
  • fibers adhering to the surface of the cylinder 16 are carried away, fiber accumulations or similar inconveniences are avoided and free passage of the fiber flocks into the chute 6 is ensured at all times.
  • the clearance between the cylinder surface and the upper edge 12 of the chute wall 9 is kept small. A large clearance would permit passage of fiber flocks which would cause considerable fiber entanglements at this place. The clearance is determined by free rotation of the cylinder 16.
  • the curved wall section 13 of the connecting piece 2 adjacent to the upper edge 12 diverges from the surface of the cylinder 16 to define a space in which the cross-sectional area gradually increases.
  • a transporting duct 19 can be provided with more than one chute as above.
  • two connecting pieces 20, 20 are inserted consecutively and connected to the transporting duct 19 by means of flanges 24, and 24, 25 respectively, and
  • the connecting pieces 20, 20 are designed in the same manner as the connecting piece 2 shown in FIG. 1 and are provided with rotatable cylinders 26, 26 respectively.
  • the surfaces of the cylinders 26, 26' are smooth and are arranged in the same manner as cylinder 16 shown in FIG. 1 as a deflecting element above the upper edges 21, 21' respectively of the back chute walls.
  • the front and back walls of the chutes 22, 23 are also provided with perforations 22' 23' on both sides, through which a part air stream deflected from the transporting air streamby either of the respective cylinders 26, 26' and passing into a respective chute 22, 23 escapes into exhaust ducts (not shown) from where the air is eliminated in known manner.
  • the flocks are separated from the part air stream passing into the feed chute and escaping through the perforated walls, are deposited in the respective chute and furthermore are condensed by the pressure prevailing in the transporting duct 19.
  • a fiber flock carrying air stream originating from a machine for supplying fiber flocks (not shown) and flowing through the transporting duct 19 in the direction indicated by the arrow C is successively divided into part air streams in the connecting pieces 20, 20'. These part air streams, together with the fiber flocks are deflected into the corresponding chutes 22, 23 by the cylinders 26, 26' respectively.
  • the cylinders 26, 26 which rotate in the directions indicated by the arrows D, D respectively and are driven by a drive mechanism (not shown) act as stream deflecting elements and ensure that the fibers adhering to the cylinder surfaces are carried away from the zone of fiber flock impact in the direction of the respective chute 22, 23.
  • the fibers adhering to the cylinders 26, 26' and carried away from the impact zone by rotation of the cylinders 26, 26' furthermore are torn off the cylinder surfaces by the part air streams.
  • cylinder 26' is set at a higher elevation in the duct 19 than cylinder 26.
  • the air flow cross-sectional area at this place is thus smaller and uniform distribution of the incoming flocks into the respective chutes 22, 23 is achieved.
  • the clearance between the surface of the cylinder 26' and the upper edge 21 of the back chute wall of the rear chute 23 is the same as between the surface of the cylinder 26 and the upper edge 21 of the back chute wall of the forward chute 22 in order to prevent penetration of fiber material for reasons as described above.
  • the clearance can be achieved by any suitable means for maintaining the clearance.
  • the transporting air stream either can, as mentioned earlier in the description of FIG. I, be fed back to the machine supplying fiber flocks or the whole fiber flock carrying air stream still remaining in the transporting duct 19 can be taken off in a known manner into a last chute into which the transporting duct finally merges.
  • the deflecting elements can also be used with pressurized transporting duct 32 containing a fiber flock carrying air stream which merges into a plurality, of successively arranged parallel feed chutes 27 31 (shown partially) of a fiber flock blending machine (not shown).
  • feed chutes 27 31 are separated by their corresponding common walls 33 36 and are arranged in a housing 37 in which a distribution room extending above the individual chutes is provided.
  • the feed chutes are provided with perforated side walls (not shown in the longitudinal section) while the chute end walls 39, 40 form the walls of the housing.
  • a fiber flock blending machine of a similar type is described e.g., in US. Pat. Application Ser. No. 810,500, filed Mar. 26, 1969.
  • a cylinder 45, 46, 47, 48 is disposed above the upper edges 41, 42, 43, 44 of the individual chute walls 33 36 respectively and each is provided with a smooth surface. and is rotatably arranged at an adjustable height above the corresponding chute wall.
  • the incoming flocks carried in the air stream via transporting duct 32 are distributed uniformly into the individual chutes 27 31 with the transporting air stream in the distributing room 38 above the chutes being successively separated into part air streams, as indicated by the arrows, by
  • deflecting cylinders 45 48 which are set successively higher from chute to chute. Any fibers adhering to the surfaces of the cylinders 45 48 are carried away from the impact zone of the incoming fiber flocks owing to the rotation of the cylinder in the direction indicated by the arrows E and are taken off by the part air streams flowing into the chutes. The incoming flocks thus always contact a fiber-free surface of the cylinders so that fiber accumulations and entanglements on the deflecting elements, and thus at the chute entrance, are prevented.
  • the cylinders are activated by a drive mechanism (not shown).
  • U-shaped separator heads 49 52 the height positions of which are adjustable, are provided on the upper edges 41 44 of the corresponding chute walls. In this way, the upper end of the chute walls 33 36 can beset at different heights.
  • the U-profiled separator head 54 is disposed over the chute wall as in FIG. 3. Further the separator head 54 is pro.- vided on one side wall with a holder 58 which extends above the upper edge 56 of the separator head 54 and cooperates with a similar holder on the opposite side of the head 54 to support a shaft 60 of a cylinder 61 in the upper part.
  • the shaft 60 is connected to a drive motor 59 so that the cylinder 61 can be rotated on an axis disposed at a distance F from the upper edge 56.
  • distance F is chosen such that fiber flocks are sufficiently sealed off from penetrating between the smooth surface 62 of the cylinder 61 and the upper edge 56 of in a guide slot 63 of the holder58 and is connected to a threaded rod 56 disposed longitudinally of the chute wall 53.
  • the smooth surface cylinder 67 70 can also be mounted eccentrically above the chute walls 71 74 of a plurality of chutes 75 79.
  • the incoming fiber flockscarried in an air stream through a transporting duct meet a surface of the deflecting element, the position of which surface constantly changes as the cylinder is rotated.
  • the air current conditions on the cylinder surface change during rotation. This favorably influences the taking off of fibers adhering to the cylinder surface.
  • the eccentricity of the cylinders 67 70 can be of a value corresponding about the distance between the cylinder surface and the upper edge of the chute.
  • the eccentricity is such that a penetration of fiber flocks is avoided between the upper edge 49, 50, 51, and 52 and the cylinder 45, 46, 47, and 48 and the cylinder can rotate freely.
  • the eccentricity of the cylinders can be transposed each to another by or It is noted that where a plurality of cylinders are arranged, one each at successive branching points of feed chutes, the cylinders can be driven in phase or out of phase as needed or desired on the circumstances prevailing.
  • the number of revolutions of the cylinders is of about 50 200 r.p.m., but lower or higher revolutions can be applied.
  • the deflecting cylinders also can be arranged to be freely rotatable without a drive mechanism such to be rotated by the air stream flowing above them. In this case, all of a plurality of cylinders arranged in sequence are rotated in the same direction.
  • each said chute having a back wall with respect to the direction of air flow in said duct; means disposed at the branching of each of said chutes from said duct and extending into a partial portion of said duct for deflecting a part stream of the fiber flock carrying air from said duct into each respective chute while defining an air flow cross-sectional area with said duct for the remainder of the carrying air, each said means defining a smaller air flow cross-sectional area with said duct at a downstream chute of said chutes than at an upstream chute; each said means including a rotatably mounted deflecting element cylinder having a smooth surface disposed above a respective back wall with an axis disposed in the plane of said back wall, each said cylinder being closely spaced to a respective back wall to avoid clogging and impairing of the rotatability of said
  • each said back wall extends upwardly to a higher position than a front wall of respective chute.
  • each said back wall of respective chute is bent at the upper edge into the direction of the flow in the duct and is curved upwardly diverging from said cylinder.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00875094A 1968-11-08 1969-11-10 Apparatus for feeding fiber material into a chute Expired - Lifetime US3712682A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1677068A CH490525A (de) 1968-11-08 1968-11-08 Vorrichtung zum Beschicken eines Schachtes mit flockenförmigen Fasermaterial mittels eines pneumatischen Flockenfördersystems für Spinnereimaschinen

Publications (1)

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US3712682A true US3712682A (en) 1973-01-23

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Application Number Title Priority Date Filing Date
US00875094A Expired - Lifetime US3712682A (en) 1968-11-08 1969-11-10 Apparatus for feeding fiber material into a chute

Country Status (5)

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US (1) US3712682A (enrdf_load_stackoverflow)
CH (1) CH490525A (enrdf_load_stackoverflow)
DE (1) DE1956424A1 (enrdf_load_stackoverflow)
FR (1) FR2022855A1 (enrdf_load_stackoverflow)
GB (1) GB1295455A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871712A (en) * 1971-07-29 1975-03-18 Truetzschler & Co Shaft for depositing fiber flocks
JPS51154471U (enrdf_load_stackoverflow) * 1975-06-03 1976-12-09
JPS52105170U (enrdf_load_stackoverflow) * 1976-02-07 1977-08-10
US4178114A (en) * 1977-04-29 1979-12-11 Rieter Machine Works, Ltd. Apparatus for dividing a flock-laden air stream in pneumatic transporting systems for spinning machines
US4499633A (en) * 1983-02-10 1985-02-19 Trutzschler Gmbh & Co. Kg Apparatus for separating fiber tufts from an airstream
US5155989A (en) * 1989-02-27 1992-10-20 Reiter Machine Works Ltd. Method of and apparatus for producing a blended yarn from cotton fibers and man-made fibers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904317A1 (de) * 1989-02-14 1990-08-16 Hollingsworth Gmbh Vorrichtung zum pneumatischen speisen von fasergut zu einem schacht u. dgl.
IT1243895B (it) * 1990-11-06 1994-06-28 Marzoli & C Spa Struttura di miscelatore per materiali in fiocchi di fibre, in particolare di cotone

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512523A (en) * 1946-06-24 1950-06-20 Herman A Fisher Centrifugal impeller mill with rotating target
US3070847A (en) * 1960-03-16 1963-01-01 Hergeth Kg Masch Apparate Apparatus for regulating the density of cotton fed to cleaning and opening machines in cotton and fibre spinning
US3157440A (en) * 1961-01-25 1964-11-17 Nihon Spindle Mfg Co Ltd Fibrous raw material feeding arrangements for spinning machines
US3414330A (en) * 1966-09-03 1968-12-03 Truetzschler & Co Pneumatic feeding arrangement for supplying fibrous materials
US3514159A (en) * 1966-11-15 1970-05-26 Molins Machine Co Ltd Apparatus for continuously feeding cut tobacco into a cigarette-making machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512523A (en) * 1946-06-24 1950-06-20 Herman A Fisher Centrifugal impeller mill with rotating target
US3070847A (en) * 1960-03-16 1963-01-01 Hergeth Kg Masch Apparate Apparatus for regulating the density of cotton fed to cleaning and opening machines in cotton and fibre spinning
US3157440A (en) * 1961-01-25 1964-11-17 Nihon Spindle Mfg Co Ltd Fibrous raw material feeding arrangements for spinning machines
US3414330A (en) * 1966-09-03 1968-12-03 Truetzschler & Co Pneumatic feeding arrangement for supplying fibrous materials
US3514159A (en) * 1966-11-15 1970-05-26 Molins Machine Co Ltd Apparatus for continuously feeding cut tobacco into a cigarette-making machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871712A (en) * 1971-07-29 1975-03-18 Truetzschler & Co Shaft for depositing fiber flocks
JPS51154471U (enrdf_load_stackoverflow) * 1975-06-03 1976-12-09
JPS52105170U (enrdf_load_stackoverflow) * 1976-02-07 1977-08-10
US4178114A (en) * 1977-04-29 1979-12-11 Rieter Machine Works, Ltd. Apparatus for dividing a flock-laden air stream in pneumatic transporting systems for spinning machines
US4499633A (en) * 1983-02-10 1985-02-19 Trutzschler Gmbh & Co. Kg Apparatus for separating fiber tufts from an airstream
US5155989A (en) * 1989-02-27 1992-10-20 Reiter Machine Works Ltd. Method of and apparatus for producing a blended yarn from cotton fibers and man-made fibers

Also Published As

Publication number Publication date
CH490525A (de) 1970-05-15
FR2022855A1 (enrdf_load_stackoverflow) 1970-08-07
DE1956424A1 (de) 1970-06-04
GB1295455A (enrdf_load_stackoverflow) 1972-11-08

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