EP0385154B1 - Mechanische Abzugsvorrichtung - Google Patents

Mechanische Abzugsvorrichtung Download PDF

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Publication number
EP0385154B1
EP0385154B1 EP19900102477 EP90102477A EP0385154B1 EP 0385154 B1 EP0385154 B1 EP 0385154B1 EP 19900102477 EP19900102477 EP 19900102477 EP 90102477 A EP90102477 A EP 90102477A EP 0385154 B1 EP0385154 B1 EP 0385154B1
Authority
EP
European Patent Office
Prior art keywords
take
knitted fabric
members
knitting machine
down device
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 - Lifetime
Application number
EP19900102477
Other languages
English (en)
French (fr)
Other versions
EP0385154A1 (de
Inventor
Milan Fucik
Miroslav Chromy
Jiri Ing. Pohorilsky
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.)
Uniplet AS
Original Assignee
Uniplet AS
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 Uniplet AS filed Critical Uniplet AS
Publication of EP0385154A1 publication Critical patent/EP0385154A1/de
Application granted granted Critical
Publication of EP0385154B1 publication Critical patent/EP0385154B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/88—Take-up or draw-off devices for knitting products

Definitions

  • the invention relates to a mechanical take down device in a circular knitting machine, particularly a double cylinder knitting machine, according to the first portion of claim 1.
  • tension means in a knitting machine for drawing the knitted fabric away from the needles of a needle cylinder.
  • One of said tension means is formed as a sleeve having a horizontal ring flange on its upper end portion, and is mounted in the center axis of the lower needle cylinder.
  • the other tension means includes a disc mounted on the lower end of a centrally disposed rod.
  • One of said means is shiftable in the axial direction and both means are provided on its fabric contact or gripping surfaces with spiral grooves and ribs.
  • both of the tension means are held stationary and unrotatable.
  • CS-A-185,999 is described a take down mechanism for a circular knitting machine, in which vertically movable working elements being arranged in a circle.
  • the vertical movement of said working elements is controlled by a stationary cam and springs.
  • Working ends of said elements are made in form of flexible blades. Said device operates reasonably reliably, except for jacquard take down, where bars are sometimes visible. Said bars originate due to uneven take down between neighbouring working elements.
  • the CS-A-221,149 discloses a take down pin for catching up the fabric during welt knitting. During the course of further knitting it takes it down due to the action of a pneumatic mechanism. Said device practically eliminates longitudinal bars, but it is relatively complicated, takes up space and requires the supply of pressure air into the machine. A further disadvantage is that it does not permit to knit panties due to the lift of the device, or the lift may be performed in two parts, of course with the extension of the time to knit one product.
  • One advantage of the invention is that the device is very simple and not demanding as to the operation and servicing. Due to the fact that the device acts around the whole periphery of the fabric by a continuous pull, knitted fabrics of high extensibility can taken down without any wrinkling or folding effects. Moreover, it smoothes up the fabric surface and the fabric quality is better. The device does not need to be adjusted and there is practically no wear, what guarantees its long service life. Faults due to the function are also entirely eliminated. The device can operate like upper or lower take down.
  • the double cylinder circular knitting machine of Fig. 1 for the production of e.g. socks is provided with a lower and upper needle cylinder 1, 2 for receiving two sets of double-head needles 3 and jacks for controlling said needles 3.
  • the machine is further provided with knock over sinkers 4 in the lower needle cylinder 1 and with stationary presser sinkers 5 in the upper needle cylinder 2.
  • the knock over sinkers 4 are controlled by stationary cam rings 6, 7 fixedly arranged on a non-rotary tube 8.
  • Said knitting machine is equipped with a mechanical take down device comprising the following parts.
  • an axially shiftable member 11 working part of which has a conical screw-like outer surface 110 provided with a spiral formed rib. Both members 10 and 11 grip into each other, while the slope of internal conical surface 100 (Fig. 2) of the member 10 corresponds to the conical screw-like surface 110 of the other member 11. Both members 10 and 11 are arranged coaxially.
  • the upper member 11 is located rotatably and shiftably in rings 12, 13 which are fixedly arranged in an internal rotary tube 14 of the upper needle cylinder 2. Said internal tube 14 rotates with the needle cylinder 2.
  • a lever 15 located swingably in a stand 16 on an upper flange 17 of the machine. The other arm of the lever 15 is controlled by the machine control drum through a not shown kinematic transmission.
  • Operation of the above-mentioned device is as follows. At the beginning of knitting the fabric, i.e. of the welt, the member 11 is lifted so that the take down device is out of operation. The fabric P grows longer, while it contracts to the center due to laying of elastic thread. After finished knitting of the welt, the member 11 (Fig. 3) is lowered by a command from the control drum. The fabric P is pressed by a conical screw-like surface 110 onto the internal conical surface 100 of the member 10.
  • the pressure of the member 11 causes entrainment of fabric P by rotating the lower member 10. Due to the rotation, the fabric P is in fact screwed into the surface of conical screw-like surface 110 and it is thus in fact tensioned and taken down from the needles 3. After finished knitting the member 11 is lifted by a command from the control drum and the fabric is cast off the needles 3.
  • the operation of the members 10 and 11 can proceed in opposite sequence.
  • the upper member 11' (Fig. 8) is provided with a conical surface 110' and the lower member 10' with a screw-like conical surface 100'.
  • the fabric is tensioned and taken down by the member 10'.
  • Another modification representing no change in the principle of the solution consists in that the rotary location is changed.
  • the lower member 10 or 10' is arranged non-rotatably and the upper member 11, 11' is arranged as driven.
  • the surfaces by which the parts fit into each other do not need to be conical, but they may be for example of a cylindrical shape, as evident on members 11a, 10a in Figs. 4 and 5, or they may be formed in adjacent plane faces of parts 11b, 10b (Figs. 6 and 7).
  • the take down device can be arranged for upper take down so that the member 10 with the opening is arranged in the upper needle cylinder and the full member 11 in the lower cylinder.
  • the full member in the lower needle cylinder is not axially shiftable and the member with the opening for fabric passage is axially shiftable.
  • the device according to the invention can be used even in single cylinder knitting machines and also in large diameter knitting machines.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (5)

  1. Mechanische Niederhalter-Vorrichtung in einer Rundstrickmaschine, insbesondere in einer Zwei-Zylinder-Strickmaschine, mit
    zwei Niederhalter-Gliedern (10, 11) zum Ergreifen und Abziehen des Strickgutes (P) zwischen den Nadelzylindern (1, 2), wobei
    eines (11, 11') dieser Niederhalter-Glieder gegenüber dem anderen Glied axial verschiebbar ist und
    eines dieser Glieder (10, 10', 10b) eine zentrale Öffnung für den Durchlauf des Strickgutes (P) aufweist,
    das erste (11, 11b, 10') dieser Niederhalter-Glieder eine schraubenförmige Oberfläche (110, 100') mit Spiralrippen aufweist, wohingegen das zweite Niederhalter-Glied (10, 11') mit einer weitgehend glatten Kontaktfläche versehen und in Beziehung zum Nadelzylinder der Strickmaschine fest angeordnet ist, um eine stationäre Abstützung des Strickgutes bei einem vom ersten Niederhalter-Glied ausgeübten Druck zu bilden, wenn das verschiebbare Niederhalter-Glied (11, 11') in eine Betriebsstellung vorgeschoben ist,
    dadurch gekennzeichnet, daß
    beide Niederhalter-Glieder (10, 11) koaxial um die Mittelachse der Strickmaschine angeordnet und ihre Kontaktflächen zueinander parallel ausgerichtet sind, und
    das erste Niederhalter-Glied (11, 11b, 10') mit das Strickgut (P) in einer Länge kontaktierenden Rippen versehen ist, die zur Ausübung eines gleichmäßigen Zuges auf das Strickgut über den gesamten Umfang des gestrickten Schlauchs ausreicht, und
    das erste Niederhalter-Glied zur Ausführung einer Umfangsbewegung gegenüber dem Strickgut (P) zum Treiben des Strickguts (P) nach radial einwärts mit Bezug auf die Mittelachse der Rundstrickmaschine montiert ist.
  2. Niederhalter-Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein Glied (11; 11a; 11') zum Eingriff in die zentrale Öffnung des anderen Glieds (10; 10a; 10') ausgebildet ist.
  3. Niederhalter-Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das die zentrale Öffnung aufweisende Glied (10, 10', 10a) in einem rotierenden Nadelzylinder (1) und das andere Glied (11, 11', 11a) drehfest und axial verschiebbar im anderen Nadelzylinder (2) angeordnet sind.
  4. Niederhalter-Vorrichtung nach Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die mit den Spiralrippen versehene schraubenförmige Oberfläche (110) an einem massiven Glied (11, 11a) ausgebildet ist.
  5. Niederhalter-Vorrichtung nach Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die mit den Spiralrippen versehene schraubenförmige Oberfläche (100) an dem Glied (10) mit der zentralen Öffnung ausgebildet ist.
EP19900102477 1989-02-27 1990-02-08 Mechanische Abzugsvorrichtung Expired - Lifetime EP0385154B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS1209/89 1989-02-27
CS891209A CS271599B1 (en) 1989-02-27 1989-02-27 Mechanical pulling-off equipment

Publications (2)

Publication Number Publication Date
EP0385154A1 EP0385154A1 (de) 1990-09-05
EP0385154B1 true EP0385154B1 (de) 1994-11-02

Family

ID=5345915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900102477 Expired - Lifetime EP0385154B1 (de) 1989-02-27 1990-02-08 Mechanische Abzugsvorrichtung

Country Status (5)

Country Link
EP (1) EP0385154B1 (de)
JP (1) JPH02289155A (de)
CS (1) CS271599B1 (de)
DE (1) DE69013719T2 (de)
ES (1) ES2063176T3 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS276355B6 (en) * 1989-10-26 1992-05-13 Uniplet As Drawing-off equipment
CS276817B6 (en) * 1990-05-22 1992-08-12 Uniplet Draw-off device
CZ279622B6 (cs) * 1991-06-07 1995-05-17 Trustfin Akciová Společnost Mechanické odtahovací zařízení okrouhlého pletacího stroje
CN109881348B (zh) * 2019-04-10 2024-03-19 浙江罗速设备制造有限公司 适于针织机械的防褶皱织物输出装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB432233A (en) * 1934-03-26 1935-07-23 Spiers William Ltd Improvements in or relating to circular knitting machines
GB659999A (en) * 1947-03-31 1951-10-31 Bata Improvements relating to the drawing off of circularly knitted articles
GB1175131A (en) * 1966-04-19 1969-12-23 Solis Srl Improvements in or relating to Circular Knitting Machines
IT987231B (it) * 1973-05-09 1975-02-20 Carabelli Calzificio Dispositivo particolarmente per il rovesciamento ed il tensiona mento di calze in macchine circo lari da maglieria

Also Published As

Publication number Publication date
DE69013719D1 (de) 1994-12-08
CS271599B1 (en) 1990-10-12
ES2063176T3 (es) 1995-01-01
CS120989A1 (en) 1990-02-12
JPH02289155A (ja) 1990-11-29
DE69013719T2 (de) 1995-03-16
EP0385154A1 (de) 1990-09-05

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