EP0141691B1 - Dispositif de guidage d'un voile de carde et de formation d'un ruban de carde à la sortie d'une carde - Google Patents

Dispositif de guidage d'un voile de carde et de formation d'un ruban de carde à la sortie d'une carde Download PDF

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Publication number
EP0141691B1
EP0141691B1 EP19840401701 EP84401701A EP0141691B1 EP 0141691 B1 EP0141691 B1 EP 0141691B1 EP 19840401701 EP19840401701 EP 19840401701 EP 84401701 A EP84401701 A EP 84401701A EP 0141691 B1 EP0141691 B1 EP 0141691B1
Authority
EP
European Patent Office
Prior art keywords
flap
flaps
guide
articulated
floor
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.)
Expired
Application number
EP19840401701
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0141691A1 (fr
Inventor
Roger Gauvain
Thadé Jedraszyk
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 GmbH and Co KG
Original Assignee
Alsacienne de Construction de Material Textile
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 Alsacienne de Construction de Material Textile filed Critical Alsacienne de Construction de Material Textile
Publication of EP0141691A1 publication Critical patent/EP0141691A1/fr
Application granted granted Critical
Publication of EP0141691B1 publication Critical patent/EP0141691B1/fr
Expired 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
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers

Definitions

  • the present invention relates to a device for guiding the web leaving the two output delivery cylinders of a card and for forming a card tape which is then stuffed in the pot of the card.
  • Carding sail guiding devices are already known, for example from French patent 2 384 041 filed on March 16, 1978 in the name of Trutzschler, which comprise several guiding elements, such as flaps, articulated arranged in the immediate vicinity of the cylinders issuers and having a hollow guide surface arranged perpendicular to the direction of movement of the web, said guide surface almost entirely enveloping the output delivery cylinders of the card. At least one of the guide elements has an outlet opening for the carding strip formed by the pickup of the web.
  • the concave enveloping surface of the guide flaps has the drawback of an obstruction to the exhaust of air driven dynamically by the veil, at the outlet of the delivery cylinders, which can cause swelling. veil and difficulties in forming the carding tape.
  • the re-initiation of the formation of the tape requires manual intervention.
  • the main object of the present invention is to remedy these two drawbacks.
  • a very wide carding veil could be collected and formed into a ribbon by guide elements, or hinged flaps, having an essentially flat surface, and not concave, oriented perpendicularly. in terms of the veil, and not embracing the delivery cylinders. The escape of the air entrained by the veil is thus favored.
  • an additional retractable flap which is retracted when the machine is in normal operation, forms, at the time of priming, a floor which receives the web and thus allows automatic re-priming of the formation of the tape, without manual intervention.
  • the subject of the invention is a device for guiding the web coming out of the two output delivery cylinders of a card and for forming a card strip, composed of several articulated flaps the surface of which is directed substantially perpendicular to the plane.
  • card web and one of which has an outlet guide hole for the card tape characterized: in that the flap guide surfaces are substantially flat and do not embrace the delivery cylinders; in that said device comprises a substantially flat additional movable flap, forming a temporary floor for the carding web when the ribbon formation is re-started, said floor flap being articulated around a horizontal axis parallel to the axes of the delivery cylinders; and in that the articulated flaps comprise two lateral flaps and a central flap which are all articulated around vertical axes.
  • the two lateral flaps are articulated, each by their end close to the edges of the delivery cylinders on a fixed vertical axis integral with the frame of the card, and the central flap is articulated on each of the central ends of the flaps lateral, said third flap carrying an orifice for guiding the carding strip.
  • the additional shutter, or shutter-floor is articulated, by means of a horizontal axis, to the lower part of the central shutter, the mechanical connection between these two members being such that the orifice for guiding the carding tape, carried by the third flap moves away from the delivery cylinders at the same time as the floor shutter is raised to support the web at the time of priming, while said guide orifice approaches the delivery cylinders, in the carding production position , at the same time as the floor shutter is retracted by lowering to allow free passage to the exhaust of the air entrained by the veil and stirred by the delivery cylinders.
  • Figure 1 is a plan view of the device according to the invention, the different members being shown in solid lines in the position they occupy during normal operation of the card and being shown in broken lines in the position they occupy for starting the formation of the ribbon from the card web.
  • Figures 2 and 3 are sectional views of the device along the vertical plane Y of Figure 1, respectively in the normal operating position of the card and in the priming position.
  • Figure 4 is a detailed view of the articulation of the side flaps on the central flap.
  • FIGs 1, 2, 3 there is shown in Figures 1, 2, 3 the known essential elements of a card, between which is interposed the device according to the invention. These elements conventionally include the delivery cylinders 2, 2 'of the card which deliver a card web 4. After formation of the card tape 6, this tape passes through a condenser 8 at the outlet of which the calendar tape 6' is gripped by the calendar rollers 10, 10 'and directed into the card pot (not shown).
  • the device comprises a first and a second lateral flap 12, 14 which are each articulated on a vertical fixed axis 16, 18, integral with the frame 19 of the card, so as to be able to pivot downstream of the machine to the positions 12 ', 14' shown in broken lines in Figure 1.
  • the central flap 24 is pierced with an outlet orifice for the carding ribbon to which is connected a ribbon guide of substantially conical shape 28 situated opposite the condenser 8.
  • a ribbon guide of substantially conical shape 28 situated opposite the condenser 8.
  • the three flaps 12, 14 and 24 are elongated rectangular flaps which have a substantially flat surface 30 oriented substantially perpendicular to the plane of the web 4. We can see the shape of this surface, for the flap 24, in FIG. 2, the other two flaps 12,14 having substantially the same shape.
  • the three flaps may have short curved flanges 32 (FIG. 3), but these flanges above all have a function of stiffening the flaps, since these flaps have only a small height (less than the diameter of the cylinders 2, 2 ') and do not in any way embrace these cylinders.
  • the device according to the invention also comprises an additional flat flap 34, or floor flap, which is pivotally mounted about a horizontal axis 36 parallel to the axes XX of the delivery cylinders 2, 2 '.
  • the pin 36 is carried by the lower part of the central flap 24, as can be seen more clearly in FIGS. 2 and 3.
  • the floor shutter 34 has, in plan, substantially an elongated trapezoid shape, as can be seen in FIG. 1, corresponding to the configuration in the retracted position 12 ′, 14 ′, 24 ′ of the first three flaps.
  • the flap 34 On each of its edges located on the sides of the machine, the flap 34 carries a rod 38, or a similar sliding member such as a roller, which engages in a substantially vertical slide 40 secured to the frame 19 of the card (see figures 1 and 3).
  • the shutter-floor 34 can pivot, about the axis 36, from a retracted position, substantially vertical ( Figure 2), to a raised position 34 '( Figure 3) in which it collects and supports the veil 4 at the time of priming.
  • the pivoting of the floor flap 34, from one to the other of its positions, can be controlled manually, or, preferably, by two pressurized fluid cylinders 42 coupled to the ends of said flap and whose fixed point is articulated on frame 19 of the card.
  • the device according to the invention also includes air blowing nozzles (not shown) which blow air according to the arrows 44 (FIG. 1), substantially parallel to the flaps 12, 14, as well as possibly blowing nozzles to inside the conical tape guide 28.
  • the condenser 8 is provided with a pneumatic suction system so that the tape presented by the tape guide 28 is sucked by the condenser.
  • the central flap 24 is located at a distance d from the delivery cylinders, while the floor flap 34 is folded down.
  • the veil 4 meets the flat surfaces 30 of the flaps 12, 14, 24 and it is guided, by the blows 44, towards the orifice of the tape guide 28.
  • the flaps 12, 14, 24 are essentially flat, that they are not disposed against the cylinders 2, 2 'and that they do not embrace these cylinders, and thanks to the fact that the floor shutter 34 is retracted downwards, the escape of the air contained in, and driven by, the veil can be done without any obstruction, by wide passages upwards and downwards.
  • the pickup of the veil is not disturbed by local turbulence or overpressures and the frequency of ruptures of the veil is thereby reduced, which makes it possible to produce the veil at higher speed.
  • the jack 40 When the card starts, or after an accidental tearing of the web or the ribbon, the jack 40 is actuated, manually or automatically upon detection of the break, and elongates to the position shown in FIG. 3.
  • the floor shutter 34 thus rises to the position 34 'where it can receive and support the web 4. At this time the card feed members, combers and delivery cylinders rotate slowly.
  • the flap 24 which carries the pivot axis 36 of the flap 34, is driven to the right ( Figures 2 and 3) which moves it away from the cylinders 2, 2 'up to a distance D, greater than the distance d.
  • This retraction of the flap 24 causes the lateral flaps 12, 14 to pivot to the oblique position 12 ′, 14 ′ (FIG. 1) which facilitates the sliding of the veil along the side flaps, at the time of priming.
  • the tape guide 28 approaches (to position 28' in Figure 3) the inlet of the condenser 8, the interval between these two members n ' being more than e ⁇ E. This facilitates the priming and aspiration of the ribbon 6 in the condenser 8.
  • the production speed being low at this time, there is no need to have a large air evacuation between the guide 28 and the condenser 8, as is the case during operation at normal speed.
  • the card is returned to its production speed, at the same time as the jack 42 is controlled to bring the floor shutter 34 back to the low position (FIG. 2) and move the shutters 12, 14 away, 24 of the cylinders 2, 2 'to allow free passage to the air entrained by the web and the delivery cylinders.
  • the tape guide 28 moves away from the inlet of the condenser 8 to the distance E (FIG. 2) for running at normal speed.
  • FIG. 4 shows an example of an embodiment of the articulation system 26 of the side flap 12 on the central flap 24.
  • This articulation system can comprise a first clevis 46 which is welded to the side flap 12 and which carries a pin 48, as well as a second clevis 50 which is welded to the central flap 24 and which carries a pin 52.
  • the axes 48 and 52 are connected by at least one link 54 which ensures the connection between the two flaps thus allowing the flap 12 to pivot according to the arrow F 'around its axis 16, when the central flap is driven in translation along the arrow F by the pivot axis of the flap 34.
  • deformable connection systems between the central flap 24 and the side flaps 12-14 can of course be used, for example a connection by means of a flexible spring leaf or any other similar deformable elastic element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP19840401701 1983-08-29 1984-08-22 Dispositif de guidage d'un voile de carde et de formation d'un ruban de carde à la sortie d'une carde Expired EP0141691B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8313830 1983-08-29
FR8313830A FR2551094B1 (fr) 1983-08-29 1983-08-29 Dispositif de guidage d'un voile de carde et de formation d'un ruban de carde a la sortie d'une carde

Publications (2)

Publication Number Publication Date
EP0141691A1 EP0141691A1 (fr) 1985-05-15
EP0141691B1 true EP0141691B1 (fr) 1987-10-28

Family

ID=9291852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840401701 Expired EP0141691B1 (fr) 1983-08-29 1984-08-22 Dispositif de guidage d'un voile de carde et de formation d'un ruban de carde à la sortie d'une carde

Country Status (4)

Country Link
EP (1) EP0141691B1 (enrdf_load_stackoverflow)
JP (1) JPS6075616A (enrdf_load_stackoverflow)
DE (1) DE3467006D1 (enrdf_load_stackoverflow)
FR (1) FR2551094B1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017064A1 (de) * 1989-08-07 1991-02-14 Truetzschler & Co Verfahren und vorrichtung zum automatischen anspinnen eines faserflors zu einem faserband, z. b. bei einer karde

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6244075U (enrdf_load_stackoverflow) * 1985-09-02 1987-03-17
DE3839413A1 (de) * 1988-11-22 1990-05-23 Rieter Ag Maschf Trichteranordnung am ausgang einer karde
US5155879A (en) * 1989-08-07 1992-10-20 Trutzschler Gmbh & Co. Kg Apparatus for automatically starting formation of sliver from a carded web
DE4025854A1 (de) * 1990-05-26 1992-02-20 Truetzschler & Co Vorrichtung zum automatischen anspinnen eines faserflors zu einem faserband, z.b. bei einer karde
CN110952172A (zh) * 2019-12-26 2020-04-03 卓郎（常州）纺织机械有限公司 梳棉机预牵伸装置的翻转式棉条生头结构
DE102022106340A1 (de) * 2022-03-18 2023-09-21 Maschinenfabrik Rieter Ag Vliesführungsvorrichtung, Faserband-bildende Textilmaschine und Verfahren zum Betreiben einer Faserband-bildenden Textilmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903751A (en) * 1954-04-07 1959-09-15 George W Allred Protective housing for webs on carding machines
GB1211020A (en) * 1967-12-06 1970-11-04 Cannon Mills Co Sliver condenser and guide tube for drafting units
DE3036579A1 (de) * 1980-09-27 1982-06-16 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung an einer karde oder krempel zur bildung und zum abziehen mehrerer faserbaender

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017064A1 (de) * 1989-08-07 1991-02-14 Truetzschler & Co Verfahren und vorrichtung zum automatischen anspinnen eines faserflors zu einem faserband, z. b. bei einer karde

Also Published As

Publication number Publication date
FR2551094B1 (fr) 1985-11-29
JPS6075616A (ja) 1985-04-30
JPH0360934B2 (enrdf_load_stackoverflow) 1991-09-18
DE3467006D1 (en) 1987-12-03
FR2551094A1 (fr) 1985-03-01
EP0141691A1 (fr) 1985-05-15

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