US3913177A - Apparatus for disintegrating fibrous material and for delivering disintegrated fibrous material - Google Patents

Apparatus for disintegrating fibrous material and for delivering disintegrated fibrous material Download PDF

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Publication number
US3913177A
US3913177A US466869A US46686974A US3913177A US 3913177 A US3913177 A US 3913177A US 466869 A US466869 A US 466869A US 46686974 A US46686974 A US 46686974A US 3913177 A US3913177 A US 3913177A
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US
United States
Prior art keywords
carding
feed rollers
belts
unit
fibrous material
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US466869A
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English (en)
Inventor
Ernst Fehrer
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Individual
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Individual
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Publication date
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Publication of US3913177A publication Critical patent/US3913177A/en
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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
    • D01G25/00—Lap-forming devices not integral with machines specified above

Definitions

  • ABSTRACT First and second carding units are provided. Each carding unit comprises a smooth feeder conveyor belt,
  • the apparatus further comprises charging means preceding said covering conveyor belt of said first carding unit and adapted to charge fibrous material into said space between said feeder and covering conveyor belts of said first carding unit, and drive means for driving said feed rollers and for driving said feeder and covering conveyor belts of each of said carding units at a surface velocity which is higher than the surface velocity of the feed rollers of the same carding unit.
  • the carding drum of said first carding drum is operable to eject disintegrated fibrous material onto said feeder conveyor belt of said second carding unit.
  • This invention relates to apparatus for feeding lap machines or the like, comprising a carding unit, which consists of a feeder belt conveyor, a pair of feed rollers, and a carding drum.
  • the carding drum is succeeded by a weighing device, which ensures that the material is delivered to the lap machine at a constant weight rate.
  • the feeder belt conveyor is charged by hand. Whereas this operation does not require special care, the intervals of time between successive charging operations must be relatively short because the length of the feeder belt conveyor is limited for structural reasons and the function of that belt conveyor will be adversely affected if the layer of material on said conveyor exceeds an upper limit. For these reasons, the quantity of material which can be charged to the feeder belt conveyor at one time is limited.
  • feeders so-called fox feeders
  • fox feeders which consist of a material storage bin and a conveyor for continuously taking and delivering material at a low rate.
  • the bottom of the storage bin consists of a conveyor belt, which moves the material to the upwardly inclined conveyor.
  • the box feeders need not be charged only after much longer intervals of time.
  • they have the disadvantage that they do not enable a uniform taking and delivery of the material because the conveyor consists in most cases of an upwardly inclined lattice apron, which is set with spikes, or a similar element which is not sufficiently adaptable to the mass of material in the storage bin and for this reason takes and delivers material in different quantities in different areas of the conveyor element.
  • the apparatus should be comparatively simple and reliable in operation.
  • a covering conveyor belt is provided, which is disposed over the feeder conveyor and moves in the same direction as the latter, in known manner, that the feeder conveyor belt and the covering conveyor belt have smooth, spacedly opposite faces which extend parallel to one another, thattheir surface velocity is a plurality of the surface velocity of the feed rollers, that the carding drum is succeeded by a second, identical carding unit, which comprises a feeder conveyor belt receiving the material ejected from the first carding drum and a covering conveyor belt disposed over the feeder conveyor belt of the second carding unit, and that the surface velocity of the feed rollers of the sec 0nd unit is also much smaller than the surface velocity of the smooth conveyor belts which feed said feed rollers.
  • the first carding unit has a storage bin associated therewith and the material can be charged into said storage bin through a filling chute in any desired quantities and in any desired intervals of time by hand or by a bale opener or the like. Because the two belt conveyors between which the supply of material is disposed have a higher surface velocity than the feed rollers, the material is retained before said rollers so that a continuous taking of the material is enabled even when the material is intermittently supplied. The two conveyor belts are smooth and for this reason can slip under or over the material retained before the pair of feed rollers and do not cause the material to be compressed.
  • the material is not circulated before'the pair of feed rollers associated with the carding drum because such circulation is prevented by the sense of rotation of the feed rollers and because the two conveyor belts tend to move the material toward the feed rollers. Because the two revolving conveyor belts are parallel to each other, the conditions of the material before the feed rollers are always the same so that the material is entrained by the feed rollers, disintegrated into individual fibers by the first carding drum and ejected by the latter onto the feeder conveyor belt of the second carding unit at a constant rate. In the second carding drum, the same operations are performed so that the uniformity is increased further, as desired. This eliminates the need for a succeeding weighing device or the like because the two carding drums together ensure that the material is delivered from the second carding drum to the lap machine at an exactly uniform rate.
  • photo-electric sensing unit is provided, which is disposed adjacent to the entrance to the space between the conveyor belts of the second carding unit and whose light beam extends transversely to the direction of travel of the material and deenergizes the means for driving the first carding unit, particularly the pair of feed rollers thereof, when the beam is interrupted by the material which has built up on the feeder conveyor belt of the second unit.
  • the delivery of material by the first unit is interrupted in that its feed rollers are stopped.
  • the feeding apparatus is composed of two carding units I, II.
  • the first carding unit I comprises a feeder conveyor belt 1, a pair of feed rollers 2 and a carding drum 3.
  • the feeder conveyor belt 1 is particularly smooth.
  • Another smooth covering conveyor belt 4 extends over and parallel to the feeder conveyor belt and moves in the same direction as the feeder conveyor belt from a material receiving area to a material discharging area.
  • the covering conveyor belt 4 is preceded by a filling chute 5, which opens into the space between the conveyor belts.
  • the surface velocity imparted to the two conveyor belts l, 4 by respective pulleys ll, 12 is a multiple of the surface velocity imparted to the feed rollers 2 by their shafts 13, 14.
  • the carding drum 3 disintegrates the material into individual fibers and ejects the same onto the feeder conveyor belt 1 of the second carding unit II.
  • a covering conveyor belt 4 extends over and parallel to the feeder conveyor belt 1' and moves in the same direction as the feeder conveyor belt 1'.
  • the two conveyor belts l, 4 are succeeded by a pair of feed rollers 2 and these are succeeded by a carding drum 3', which by means of an ejecting chute 6 delivers the disintegrated material to the lap machine or the like.
  • the two conveyor belts 1, 4' are also smooth, and the surface velocity imparted to them by pulleys 15, 16 respectively is much higher than the surface velocity of the pair of feed rollers 2 rotated by drive shafts 17, 18.
  • a photo-electric sensing unit 7 is disposed adjacent to the entrance to the space between the conveyor belts of the second carding unit II.
  • the apparatus 19 for driving the pair of feed rollers 2 of the first carding unit I is deenergized whenever the light beam of the unit 7 is interrupted by the material which has built up on the feeder conveyor belt 1. i
  • Apparatus for disintegrating fibrous material comprising:
  • each carding unit including 1. two elongated conveyor belts having respective smooth, longitudinal faces spacedly opposite each other in parrallel relationship,
  • first drive means for driving said belts at a predetermined common velocity of said faces in the same direction from a material receiving to a material discharging area
  • sensing means for sensing the amount of fibrous material between said faces of the conveyor belts in said second carding unit adjacent the material receiving area, said sensing means being operatively connected to the second drive means of said first carding unit for stopping the feed rollers of said first carding unit in response to a sensed predetermined amount of fibrous material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US466869A 1973-05-24 1974-05-06 Apparatus for disintegrating fibrous material and for delivering disintegrated fibrous material Expired - Lifetime US3913177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT451973A AT324892B (de) 1973-05-24 1973-05-24 Vorrichtung zum beschicken einer vliesmaschine od.dgl.

Publications (1)

Publication Number Publication Date
US3913177A true US3913177A (en) 1975-10-21

Family

ID=3565067

Family Applications (1)

Application Number Title Priority Date Filing Date
US466869A Expired - Lifetime US3913177A (en) 1973-05-24 1974-05-06 Apparatus for disintegrating fibrous material and for delivering disintegrated fibrous material

Country Status (9)

Country Link
US (1) US3913177A (xx)
JP (1) JPS5042131A (xx)
AT (1) AT324892B (xx)
BE (1) BE814461A (xx)
CH (1) CH567113A5 (xx)
DE (1) DE2414689A1 (xx)
FR (1) FR2230773B3 (xx)
GB (1) GB1420546A (xx)
IT (1) IT1010768B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436289C (zh) * 2006-02-27 2008-11-26 常熟市伟成非织造成套设备有限公司 喂料机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346327A1 (de) * 1983-12-22 1985-07-18 Hergeth Hollingsworth GmbH, 4408 Dülmen Verfahren und vorrichtung zur herstellung eines wirrfaservlieses aus spinngut
DE102005009159B4 (de) 2005-02-25 2021-08-12 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine zur Überwachung mindestens eines Faserbandes
DE102005009157B4 (de) 2005-02-25 2019-05-09 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine z.B. Karde, Krempel, Strecke o. dgl. zur Überwachung von Fasermaterial

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113988A (en) * 1934-08-03 1938-04-12 Dominion Textile Co Ltd Automatic operating mechanism in feed hoppers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113988A (en) * 1934-08-03 1938-04-12 Dominion Textile Co Ltd Automatic operating mechanism in feed hoppers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436289C (zh) * 2006-02-27 2008-11-26 常熟市伟成非织造成套设备有限公司 喂料机

Also Published As

Publication number Publication date
BE814461A (fr) 1974-11-04
IT1010768B (it) 1977-01-20
GB1420546A (en) 1976-01-07
FR2230773A1 (xx) 1974-12-20
FR2230773B3 (xx) 1977-03-04
DE2414689A1 (de) 1974-12-12
CH567113A5 (xx) 1975-09-30
AT324892B (de) 1975-09-25
JPS5042131A (xx) 1975-04-17

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