EP4253616A1 - Carde - Google Patents

Carde Download PDF

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Publication number
EP4253616A1
EP4253616A1 EP23151316.9A EP23151316A EP4253616A1 EP 4253616 A1 EP4253616 A1 EP 4253616A1 EP 23151316 A EP23151316 A EP 23151316A EP 4253616 A1 EP4253616 A1 EP 4253616A1
Authority
EP
European Patent Office
Prior art keywords
sliver
card
air duct
funnel
air
Prior art date
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.)
Pending
Application number
EP23151316.9A
Other languages
German (de)
English (en)
Inventor
Jose Guadelupe Flores Molina
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Truetzschler Group SE
Original Assignee
Truetzschler Group SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Truetzschler Group SE filed Critical Truetzschler Group SE
Publication of EP4253616A1 publication Critical patent/EP4253616A1/fr
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/74—Air draught arrangements

Definitions

  • the invention relates to a card with an inlet side for fiber flakes, the card being designed to feed the fiber flakes to a rotating drum by means of rollers, the fiber flakes being dissolved, aligned and cleaned between fixed carding elements and rotating flat bars and the drum down to the individual fibers, and the The resulting fibrous web can be transferred from the drum to a customer, which is followed by a device for converting the fibrous web into a sliver, which is followed by a compactor funnel with a pair of take-off rollers for depositing the sliver in a can.
  • the prior art it is known in the field of textile technology to deform the fiber web after the squeezing rollers into a sliver using a device for the treatment of cotton, chemical fibers or the like.
  • the device can be designed as a funnel, roller arrangement or cross-belt take-off.
  • the sliver is then guided via a funnel-shaped, round fleece guide element to a compactor funnel and then fed to a can stock via take-off rollers. Due to the design, gaps are arranged between the cross belt take-off and the fleece guide element, through which an air flow is created in the gaps due to the air flow within the card.
  • Recycled cotton can have a fiber length of 14 to 28 mm
  • shredded cotton can have a fiber length of 14 to 18 mm
  • cotton fibers have a sliver length of 22 to 35 mm, depending on the type.
  • the cross-belt take-off in which the fiber web is combined and subsequently formed into a sliver
  • the compactor funnel which is in front of the take-off rollers is arranged, short fibers on the components guiding the sliver.
  • the invention is based on the object of developing a spinning preparation machine in such a way that accumulations of material between the cross belt and the compactor funnel are avoided.
  • the card according to the invention has an inlet side for fiber flakes, the card being designed to feed the fiber flakes to a rotating drum by means of rollers, the fiber flakes being dissolved, aligned and cleaned between fixed carding elements and rotating flat bars and the drum down to the individual fibers, and in the process
  • the resulting fibrous web can be transferred from the drum to a customer, which is followed by a device for converting the fibrous web into a sliver, which is followed by a compactor funnel with a pair of take-off rollers for depositing the sliver in a can.
  • the invention includes the technical teaching that an air duct with inlet and outlet openings for passing the sliver in the transport direction is arranged between the device for converting the fibrous web into a sliver and the compressor funnel, the air duct being essentially vertical to the transport direction of the sliver extends and has on its top a device which is designed to direct the air flow in the air space of the fleece removal into the upper card space and at the same time to guide the air flowing through the sliver into the air duct.
  • the device has the advantage that the air flow in the air space of the fleece removal is guided into the upper card space. This means that it no longer flows vertically down the air duct. At the same time, the air entrained by the sliver is guided into the air duct. The air flows are separated, which prevents fibers from sticking and the resulting tearing off of fiber lumps.
  • the device is designed as a suction funnel with a guide surface that slopes downwards from the horizontal and is aligned in the direction of the device for converting the fiber web into a sliver, a separation of the air flows is achieved.
  • the air flow in the air space of the fleece removal, which is directed against the transport direction of the sliver, is separated from the air flow that is generated by the sliver.
  • the orientation of the guide surface which is inclined downwards at an angle of 20° to 40° to the horizontal, has proven to be advantageous.
  • the guide surface can protrude into the area of the roller shaft.
  • the inclination has the advantage of guiding the air flow in the air space of the fleece removal at a constant speed.
  • the guide surface can be tapered to a flattened tip which projects into the area of the device for converting the fibrous web into a sliver. This achieves effective shielding of the two air flows from each other.
  • the suction funnel can have an opening below the guide surface through which air flowing through the sliver is guided into the air duct. The air flow is then further discharged with the sliver through the compressor funnel. This avoids a congestion effect with an uncontrolled air flow.
  • the suction funnel can be designed to be inserted into an upper opening of the air duct. This means that existing cards can be retrofitted without much effort. Further measures improving the invention are shown in more detail below together with the description of a preferred exemplary embodiment of the invention with reference to the figures.
  • the card K after Fig. 1 is shown in a schematically simplified side view. Fiber flakes are guided via a shaft to a feed roller 1, a feed table 2, and via several licker-ins 3a, 3b, 3c to the drum 4 or the reel. On the drum 4, the fibers of the fiber flakes are parallelized and cleaned by means of fixed circumferential carding elements (lid bars) 14 arranged on a rotating lid 13 that revolves around lid deflection rollers 13a, 13b.
  • lid bars fixed circumferential carding elements
  • the resulting fibrous web is subsequently conveyed via a take-off 5, a take-off roller 6 and several squeezing rollers 7, 8 to a fleece guiding element 9, which forms the fibrous web with a compressor funnel 10 into a sliver, which is fed via take-off rollers 11, 12 to a subsequent processing machine or a Can 15 is handed over with can stock 16.
  • M denotes the center point (or the bearing axis) of the drum 4.
  • the arrow A indicates the working direction in relation to the fiber material or fiber fleece.
  • the directions of rotation of the rollers are in Fig. 1 indicated with curved arrows, the arrow 4b indicating the direction of rotation of the drum 4.
  • C indicates the direction of rotation of the revolving cover 13 in the carding position, and D denotes its return transport direction.
  • FIG. 2 shows the prior art with an enlarged view of the area between the squeezing rollers 7, 8 and the take-off rollers 11, 12, without the sliver or the fibrous web.
  • the fibrous web is taken over by means of the squeezing rollers 7, 8 from the take-off roller 6, not shown here, and is formed into a sliver by the transverse belt take-off 17.
  • the sliver passes through the fleece guide element 9, which in this embodiment is designed as a diaphragm or funnel with a tapering cross-section, is then guided to the compactor funnel 10 and, after the compressor funnel 10, is led out of the card by the take-off rollers 11, 12.
  • an air duct 20 with an approximately square or rectangular cross section is arranged between the fleece guide element 9 and the compressor funnel 10, which extends at least partially vertically and thus orthogonally to the working direction of the sliver.
  • the air duct 20 has an inlet opening 20a for the sliver, on which the fleece guiding element 9 is arranged.
  • the air duct 20 has an outlet opening 20b for the sliver, behind which the compressor funnel 10 is arranged when viewed in the transport direction.
  • the inlet opening 20a and the outlet opening 20b are aligned or on a line of symmetry.
  • the flap 19 is first opened and then the air duct 20 with the compressor funnel 10 and the take-off rollers 11, 12 with the complete housing of the piecing device 22 is pivoted downwards.
  • the operator removes the sliver by hand from the cross-sliver take-off 17 and guides it into the fleece guide element 9.
  • the air duct 20 arranged behind it can be covered on the top with a removable closure 21.
  • the sliver is conveyed through the compressor funnel 10 between the take-off rollers 11, 12. If the sliver is caught by the take-off rollers 11, 12, the components that were previously pivoted downwards with the housing of the piecing device 22 are returned to their starting position ( Figure 2 ) pivoted.
  • the air duct 20 is arranged symmetrically over the working width to the transport direction of the sliver.
  • FIG. 3 and 4 shows the device according to the invention in the form of a suction funnel 25, which is inserted and fastened into the upper opening of the air duct 20.
  • the suction funnel 25 corresponds in cross section to the cross section of the air duct 20, with three sides of the suction funnel 25 forming a closed surface.
  • the fourth surface, which is directed forward towards the cross-belt take-off 17, is designed as an opening 25b, through which the air flow directed through the cross-band take-off 17 is guided into the air duct 20.
  • a guide surface in the form of a roof-like projection 25a is inclined downwards at an angle of 20° to 40° to the horizontal and is directed towards the transverse belt take-off 17.
  • a funnel or a roller arrangement can also be used to form the fiber web into a sliver.
  • an air flow is entrained by the resulting sliver and flows towards the air duct 20.
  • the roof-like projection 25a tapers to a flattened tip, which protrudes into the area of the deflection rollers of the cross belt take-off 17.
  • the air flow in the air space of the fleece removal 18 is diverted through the guide surface, i.e. the roof-like projection 25a, so that the air flow is not guided vertically along the air duct 20 down to the fleece guide element 9, but into the upper card space.
  • the rotation of the cross-band take-off 17 with the sliver creates an air flow onto the fleece guide element 9, which is guided through the opening 25b under the roof-shaped projection 25a into the suction funnel 25b and thus takes fiber accumulations above the cross-band take-off 17 with it.
  • the air flow in the air space of the fleece removal is thus kept away from the sliver.
  • the air flow generated by the cross-band take-off 17 is diverted onto the fleece guide element 9 in such a way that fiber accumulations above the cross-band take-off 17 are continuously sucked into the air duct 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP23151316.9A 2022-03-24 2023-01-12 Carde Pending EP4253616A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022106989.3A DE102022106989A1 (de) 2022-03-24 2022-03-24 Karde

Publications (1)

Publication Number Publication Date
EP4253616A1 true EP4253616A1 (fr) 2023-10-04

Family

ID=87805914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23151316.9A Pending EP4253616A1 (fr) 2022-03-24 2023-01-12 Carde

Country Status (2)

Country Link
EP (1) EP4253616A1 (fr)
DE (1) DE102022106989A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU291576A1 (ru) * 1969-08-11 1979-06-30 Специальное Конструкторское Бюро Чесальных Машин Устройство дл удалени пыли от уплотнительной воронки чесальной машины
DE102019132606A1 (de) * 2019-12-02 2021-06-02 TRüTZSCHLER GMBH & CO. KG Karde

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU291576A1 (ru) * 1969-08-11 1979-06-30 Специальное Конструкторское Бюро Чесальных Машин Устройство дл удалени пыли от уплотнительной воронки чесальной машины
DE102019132606A1 (de) * 2019-12-02 2021-06-02 TRüTZSCHLER GMBH & CO. KG Karde

Also Published As

Publication number Publication date
DE102022106989A1 (de) 2023-09-28

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