WO2010091521A1 - Métier à tricoter circulaire à dispositifs d'étirage intégrés - Google Patents

Métier à tricoter circulaire à dispositifs d'étirage intégrés Download PDF

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Publication number
WO2010091521A1
WO2010091521A1 PCT/CH2010/000017 CH2010000017W WO2010091521A1 WO 2010091521 A1 WO2010091521 A1 WO 2010091521A1 CH 2010000017 W CH2010000017 W CH 2010000017W WO 2010091521 A1 WO2010091521 A1 WO 2010091521A1
Authority
WO
WIPO (PCT)
Prior art keywords
drafting
knitting machine
circular knitting
machine according
housing plate
Prior art date
Application number
PCT/CH2010/000017
Other languages
German (de)
English (en)
Inventor
Hans Stahlecker
Wolfgang Bauer
Original Assignee
Rotorcraft Ag
Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh
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 Rotorcraft Ag, Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh filed Critical Rotorcraft Ag
Publication of WO2010091521A1 publication Critical patent/WO2010091521A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/14—Circular knitting machines with independently-movable needles with provision for incorporating loose fibres, e.g. in high-pile fabrics
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • the invention relates to a circular knitting machine with integrated drafting systems according to the preamble of patent claim 1.
  • a circular knitting machine is proposed, the knitting points of which instead of each knitting point associated, withdrawn from a yarn tube, finished yarn presented by an upstream drafting distorted fiber structure.
  • the drafting system is a three- or more-cylinder drafting system with double aprons and output pressure roller pair, as is also known from ring spinning machines known from the prior art for yarn production.
  • the roving is withdrawn from a jug or from a roving bobbin, fed into the drafting system and warped to the desired extent in the drafting system.
  • the warped fiber strand can be fed directly to the needle of a knitting point after a certain solidification by a false twist device, which is arranged after the Rico Kunststoffwalzencru.
  • the fibers should again be aligned essentially parallel to one another.
  • the drafting arrangements are arranged in groups, for example three, distributed over the circumference of the needle cylinder of the circular knitting machine.
  • Each drafting group consists of a number of linear adjacent drafting systems, which are equipped with a common drive for the driven drafting system components.
  • the driven drafting components each comprise at least one continuous cylinder.
  • active knitting points alternate with so-called dead zones or areas on the needle cylinder in which the circular knitting machine has no knitting points or knitting points used during knitting.
  • dead zones or areas on the needle cylinder in which the circular knitting machine has no knitting points or knitting points used during knitting.
  • Applicant proposes a knitting machine with very compact drafting equipment.
  • the sub-cylinders of each drafting system each have axes which are mounted on one side of a housing plate and project freely from this.
  • the housing plates of the mounted compact drafting systems are substantially parallel to the machine axis of the knitting machine.
  • the axes of the sub-cylinders and the associated pressure rollers are substantially perpendicular to the machine axis.
  • the drive of the sub-cylinder arranged in such a way takes place via electric motors.
  • the compact design of these drafting contributes to that also arranged on the housing plate electric motors have rotors which extend through the housing plate and are connected on the back of the housing plate with drive pinion, via which the lower cylinder can be driven.
  • the drive function and the delay function are consistently separated.
  • the arranged on the back of the housing plate drive means are protected by a cover from contamination by fiber fly and abrasion.
  • the compact dimensions of the drafting system allow the knitting points of the circular knitting machine in pairs or even each individual knitting point to assign a drafting system. As a result, all knitting points can be used in large circular knitting machines.
  • the applicant will also propose to provide the housing plate in the region of each sealing gap with at least one through-hole. Through the through-hole compressed air is blown out, which is introduced via a feed line in the housing plate and the cover substantially airtight space enclosed. Furthermore, suction devices can be provided in the vicinity of the drafting components of each drafting system, which suction off fibers detaching from the sliver when the sliver is being drawn.
  • each drafting unit must be supplied with electrical energy.
  • each drafting device must be connected to a compressed air source, which is introduced into the space substantially hermetically sealed by the housing plate and the cover and blown through the through holes in the region of the annular sealing gaps of the driven sub-cylinders. Any suction provided in the area of the drafting system components of each drafting system must also be connected to a vacuum source.
  • the object of the present invention is therefore to modify a circular knitting machine, which is equipped with integrated drafting devices which are associated with at least a part of the arranged on a Nadelzylin- knitting points, to the effect that the supply of each drafting system with energy, with fluids, such as compressed air , etc. can be done as quickly and reliably as possible.
  • the basic design and layout of the circular knitting machine should be retained as far as possible.
  • the circular knitting machine designed according to the invention has integrated drafting arrangements which comprise at least part of the knitting points arranged on a needle cylinder assigned.
  • Each of the drafting systems is formed as a compact drafting module and includes electrically driven drafting components mounted on a housing plate extending substantially parallel to a machine axis.
  • a drafting module is assigned to a pair of adjacent knitting points or a single knitting point.
  • the drafting system modules are mounted on a frame structure annularly surrounding the needle cylinder, which is provided with electrical energy and fluid supply lines, such as compressed air, communication lines, etc., and docking stations for the drafting module housing plates.
  • the equipment of the circular knitting machine with an annular peripheral frame construction in the central supply lines or discharges for electrical energy and compressed air or extracted air, communication lines, etc. are arranged, creates the conditions for the simplest possible energy and FIu idmakers or control and Control of drafting system modules mounted thereon.
  • the annular frame construction thus forms a central supply ring, which represents a self-contained system.
  • the central supply ring preferably has only one central connection and many, substantially the number of knitting points corresponding outputs or connection interfaces.
  • the drafting systems themselves are designed as very compact drafting module.
  • All drafting system components are mounted on the housing plate, which extends essentially parallel to the machine axis of the circular knitting machine.
  • the compact design of the drafting systems allows pairs of adjacent knitting points or even each individual knitting point to assign a drafting module. Due to the compact design of the drafting systems and the easy-to-create electrical connections and fluid connections when docking to the annular peripheral frame construction, a quick change of one or more drafting system modules is made possible if required.
  • At the basic construction of the circular knitting machine no changes are required. Only the machine frame has to be supplemented by the ring-shaped frame construction with integrated supply lines and / or discharges. The necessary attachments only marginally enlarge the overall system and require only a little extra space. The easy accessibility of the machine components for their maintenance is maintained.
  • the annular peripheral frame construction is circular in correspondence with the needle cylinder.
  • the drafting arrangements can be fixed in a substantially radially aligned manner at the docking sites.
  • the drafting devices can be arranged in the immediate vicinity of the knitting points. Deflections of the fiber composite can thus be avoided.
  • the annular peripheral frame construction is arranged above the needle cylinder. It is expediently integrated into the machine frame of the circular knitting machine.
  • Another very useful embodiment of the invention provides that the housing plates of the drafting systems equipped with couplings, by means of which the necessary electrical and fluid-tight connections are automatically created during assembly of the drafting of the annular frame construction. A separate creation of the connections is omitted.
  • the docking points to the central fluid supply lines or to suction lines in the annular frame construction can also be equipped with corresponding valve devices, which are closed in the absence of a drafting system and are automatically opened only during assembly of the drafting system. When removing the drafting the corresponding valve devices are then automatically closed again.
  • the electrical connections are expediently plug-in connections, which are covered or arranged in the absence of a drafting system, that for the operating and / or maintenance personnel there is no danger to get into the circuit.
  • the docking points for the housing plates provided on the annular peripheral frame construction advantageously each have a centering device. During assembly, this ensures accurate self-alignment of the drafting system with respect to the associated knitting point (s).
  • An embodiment of the invention provides that the centering device is designed as a projecting from the frame construction Zentrierdom and on the housing plate a corresponding coupling is provided.
  • the centering mandrel can protrude in the axial or in the radial direction of the annular frame construction.
  • the centering pin is hollow and with a in the annular frame construction provided fluid line is connected.
  • This particularly space-saving embodiment uses the centering mandrel, for example, for the supply of compressed air or as discharge for extracted air.
  • the housing plates of the drafting systems are expediently equipped with quick-release devices, by means of which the electrical and fluid-tight connections can be fixed against vibration.
  • the drafting systems are particularly easy to install. If necessary, a replacement of a drafting without a major delay can be made.
  • Quick-clamping devices are well known and can be based, for example, on eccentric solutions.
  • a very expedient embodiment of the drafting system is designed as a three-cylinder drafting system.
  • Such drafting systems have a very compact design and are equipped with an input sub-cylinder and an associated input pressure roller, with a Riemchenunterzylinder and a Riemchendruckwalze and with an output sub-cylinder and an associated output pressure roller.
  • the drafting system thus has a pre-draft zone and a main draft zone. This allows a very effective and uniform distortion of a supplied fiber structure.
  • the drafting system For use in known knitting machines with, for example, 48 or 96 knitting points, the drafting system has a height, measured in relation to the extent of the axes of the lower cylinders, which is 40 mm to 100 mm.
  • Figure 1 is a schematic overall view of a generic circular knitting machine with integrated drafting
  • Fig. 2 is a schematic plan view of the generic circular knitting machine
  • Fig. 3 is a perspective view of a drafting system
  • Fig. 4 is a perspective view from above of a portion of the annular frame structure
  • Fig. 5 is a perspective view from below of a portion of the annular
  • Fig. 6 is a schematic representation of a docked to the annular frame structure drafting with indicated fluid scheme
  • the circular knitting machine 1 has a usually covered machine frame 2, which contains a tissue-receiving winding device (not shown).
  • the circular knitting machine 1 is connected to control and control units 3, via which the stitch formation process can be controlled and controlled.
  • a needle cylinder 4 is rotatably supported, which carries a number of knitting needles, usually latch needles, which are arranged uniformly along its circumference.
  • a stationary lock shell 5 surrounds the needle cylinder 4 and interacts with the knitting needles via lock parts and blanks not shown in detail.
  • a thread guide ring 6 is arranged, which is supported on the machine frame 2.
  • An unspecified machine axis of the circular knitting machine 1 extends in the vertical direction. So far, the round Knitting machine 1 the well-known from the prior art knitting machines, so that a more detailed explanation of their operation can be omitted.
  • the circular knitting machine 1 In contrast to the known circular knitting machines, which process yarn which is fed by means of thread guiding devices, thread brakes, etc., the circular knitting machine 1 according to the invention is designed for processing warped roving, to which a spinneret 9 (FIG. 2) is arranged directly in front of a knitting point. is given a twist that is detectable in the knitted mesh.
  • spinnerets 9 are also referred to as air spinnerets and are known for example from EP-A-1 518 949 or EP-1 826 299.
  • the circular knitting machine 1 is equipped with a number of drafting units 20, in which the supplied roving is warped to the desired fineness before it is fed to the spinneret 9.
  • the drafting devices 20 are assigned to the knitting points defined by the knitting needles. For this purpose, they are arranged on an annular frame structure 8, which is supported on a support frame 7, which protrudes from the machine frame 2.
  • the drafting units 20 of the circular knitting machine according to the invention have one very compact design. This makes it possible to assign each pair of adjacent knitting points or even each individual knitting a drafting system 20.
  • Fig. 3 shows a perspective view of a constructed as a compact module drafting system 20 as shown in Fig. 1.
  • the illustration shows the drafting system 20 from the perspective of the output of the drafting system.
  • the drafting system 20 shown for example, is in particular a so-called three-cylinder drafting system, each of which has an input sub-cylinder 23, a Riemchenunterzylin- 25 and an output lower cylinder 27, which are mounted on one side te on a GeHouseplat- 40 and free-flying from the front 41 protrude.
  • the sub-cylinders 23, 25, 27 are each associated with pressure rollers, wherein an input pressure roller with 24, a Riemchendruckwalze with 26 and an output pressure roller is provided with the reference numeral 28.
  • the input pressure roller 24 and the Riemchendruckwalze 26 are arranged and mounted on a separate mounting plate not shown in detail, which is connected via a tension spring with the housing plate 40.
  • the tension spring extends between an abutment projecting from the housing plate and a pressure plate. pin, which is provided on the mounting plate and is loaded by a rotatably mounted on the housing plate 40 clamping eccentric.
  • the output pressure roller 28 is mounted in a relative to the housing plate 40 freely movable bracket.
  • the holder is loaded by a leaf spring, one end of which is fixed to a mounting projection of the housing plate 40.
  • the output pressure roller 28 is inserted into the holder only and can be easily removed by lifting the output pressure roller 28 from the output lower cylinder 27 against the biasing force of the leaf spring.
  • the sub-cylinders 23, 25, and 27 are driven by electric drive motors 33, 34, which are also secured to the housing plate 40 and protrude freely in the vicinity of the lower cylinders 23, 25, 27 thereof.
  • the electric motors 33, 34 are preferably asynchronous motors, which are controlled via frequency conversion.
  • the drive means for the sub-cylinders 23, 25, 27 are arranged on the back of the housing plate 40 and protected by a cover 50 against fluff, abrasion and contamination.
  • the cover 50 is made of a largely airtight material and is also substantially airtight connected to the housing plate 40. In the assembled state, the housing plate 40 extends substantially parallel to the machine axis of the circular knitting machine.
  • the axes of the flying sub-cylinders 23, 25, 27 and the associated pressure rollers 24, 26, 28 are approximately perpendicular to the machine axis.
  • the three-cylinder drafting system 20 is designed for the delay of roving and has a pre-draft zone 21 and a main draft zone 22.
  • the pre-draft zone 21 extends from the nip line of the input sub-cylinder 23 to the input pressure roller 24 to the combination apron sub-cylinder 25 and belt pressure roller 26.
  • the main draft zone 22 extends between the combination apron sub-cylinder 25, belt pressure roller 26 and the output sub-cylinder 27 with the associated output pressure roller 28.
  • the main distortion occurs by means of a pair of straps which comprises a top apron 29 guided over the belt pressure roller 26 and a bottom apron 30 guided over the belt bottom cylinder 25.
  • the drafting system 20 has a very compact design and has, for example, a height of only about 40 mm to about 100 mm measured over the longitudinal extension of the sub-cylinders.
  • Three-cylinder drafting systems are particularly suitable for the delay of Flyerlunte that a certain Has rotation to give it the necessary transport strength. This rotation must first be resolved in the pre-draft zone before the fiber strand in the main draft zone is warped to the desired fineness.
  • the drafting can also have a simpler structure and be formed without Vorverzugszone.
  • the view of a portion of the annular frame structure 8 shown in FIG. 4 shows that the frame structure 8 has a number of annular channels 81-86 which are closed at the bottom by a common base plate 88. At the top, the annular channels 81-86 are closed off by a common annular cover plate (not shown).
  • the annular channels 81-86 serve, for example, to supply the driven drafting system components with electrical energy, to transport fluid media, for example compressed air and / or extracted air, or to receive communication lines for the control and regulation of the connected components. Also shown in Fig. 4, for example, provided with the reference numeral 10 suction or blowing device to keep the drafting components of impurities.
  • the reference numeral 20 denotes a compact drafting module which is mounted at a docking point 19 provided for this purpose of the annular frame structure 8.
  • the annular frame structure 8 thus forms a central supply ring for media, energy and communication and has a plurality of docking sites 19.
  • the number of docking points 19 corresponds to half the number of knitting points or the total number of knitting points.
  • the annular frame structure 8 is equipped with a central supply connection not shown in detail for the transported media, energy or communication. However, it is understood that separate connections for electrical power, compressed air, vacuum, communication, etc. may be provided.
  • the annular frame structure 8 is preferably formed annular.
  • the drafting module modules 20 mounted on the annular frame structure 8 are preferably radially aligned. This also facilitates the supply of roving, for example, Flyerlunte, to the drafting systems.
  • a corresponding bottom view of the common base plate 88 of the annular frame structure 8 shown in FIG. 5 shows a number of terminals 11-16 provided on the base plate 88.
  • terminals 11-16 provided on the base plate 88.
  • Plug contacts designated corresponding to at the upper narrow side 42 (Fig. 4) the housing plate 40 provided electrical contacts are formed.
  • a centering pin provided with the reference numeral 12 is provided with a bore through which, for example, the space enclosed by the housing plate 40 of the drafting system and a cover can be supplied with compressed air at the non-visible rear side of the housing plate 40. This creates an overpressure in the enclosed space, which ensures that compressed air is blown out through suitably mounted holes in the annular sealing gap of the rotating cylinder jacket of the sub-cylinders. This prevents fibers, abrasion or dirt from accumulating in the sealing gap during operation of the drafting system.
  • the reference numerals 13-16 further docking points are designated, which correspond with corresponding couplings on the housing plate 40 of
  • Drafting system or other aggregates cooperate to produce fluid-tight connections.
  • the docking sites and couplings are designed such that when docking the housing plate 40 of a drafting module 20 at a docking point 19 of the annular frame structure 8, the required electrical and / or fluid idêtn connections are automatically created. It is understood that the fluid-carrying docking points are equipped with valve devices which close the passage as soon as the drafting system modules or other units are removed, but release this automatically when a connection has been established.
  • FIG. 6 schematically shows a drafting module 20 docked to a docking point 19 of the annular frame structure 8.
  • the reference numeral 12 designates, for example, the bore provided with a centering, is injected via the compressed air in the space enclosed by the housing plate 40 and the cover space.
  • the drafting module which are needed for example for blowing off or sucking the drafting components.
  • the docking points 15 and 16 for example, the required compressed air circuit to the spinneret 9 is closed, which is arranged in front of a knitting needle indicated on the needle cylinder 4.
  • the reference character Y denotes a roving drawn from a bobbin, which is guided to the drafting unit 20, warped there to the desired extent, twisted in the spinneret 9 and fed directly to the knitting point on the needle cylinder 4.
  • the attachment of the housing plate 40 of the drafting system 20 is advantageously carried out by a quick-release device 18, for example based on eccentrics.
  • the drafting module is very quickly mounted at the docking point 19 and, if necessary, also disassembled.
  • the invention has been explained using the example of a circular knitting machine with compact three-cylinder drafting systems.

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

Abstract

L'invention concerne un métier à tricoter circulaire à dispositifs d'étirage intégrés qui sont associés à au moins une partie des emplacements de tricotage disposés sur un cylindre à aiguilles (4). Les dispositifs d'étirage sont respectivement conçus comme un module de dispositif d'étirage compact (20) et comportent des composants de dispositif d'étirage entraînés électriquement, montés sur une plaque de boîtier (40). Chaque module de dispositif d'étirage (20) est associé à une paire d'emplacements de tricotage voisins ou à un seul emplacement de tricotage. Les modules de dispositif d'étirage (20) peuvent être montés sur une structure de support (8) qui court circulairement dans le voisinage du cylindre à aiguilles (4) et qui est équipée de conduits d'alimentation ou d'évacuation pour l'énergie électrique et le fluide, par exemple de l'air comprimé ou de l'air aspiré, et qui est équipée d'emplacements d'amarrage (19) pour les plaques de boîtier (40) des modules de dispositif d'étirage (20).
PCT/CH2010/000017 2009-02-13 2010-01-26 Métier à tricoter circulaire à dispositifs d'étirage intégrés WO2010091521A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH219/09 2009-02-13
CH2192009A CH700380A2 (de) 2009-02-13 2009-02-13 Rundstrickmaschine mit integrierten Streckwerken.

Publications (1)

Publication Number Publication Date
WO2010091521A1 true WO2010091521A1 (fr) 2010-08-19

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PCT/CH2010/000017 WO2010091521A1 (fr) 2009-02-13 2010-01-26 Métier à tricoter circulaire à dispositifs d'étirage intégrés

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CH (1) CH700380A2 (fr)
TW (1) TW201033424A (fr)
WO (1) WO2010091521A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI707073B (zh) * 2018-12-21 2020-10-11 魏誌亮 圓形編織機變色頭之打結裝置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013103738A1 (de) * 2013-04-15 2014-10-16 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Streckwerk für eine Strickmaschine
DE102015119040A1 (de) * 2015-11-05 2017-05-11 Terrot Gmbh Vorrichtung und Verfahren zur Herstellung von Maschenware

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877254A (en) 1973-07-30 1975-04-15 Stevens & Co Inc J P Method and apparatus for knitting fabric from untwisted staple fibers
US5134863A (en) * 1991-05-10 1992-08-04 Mayer Industries, Inc. Circular sliver knitting machine having increased carding capacity
WO2004079068A2 (fr) 2003-03-06 2004-09-16 Koenig Reinhard Tissu maille, procede et dispositif pour le realiser
WO2004097093A2 (fr) * 2003-04-26 2004-11-11 Memminger-Iro Gmbh Fournisseur de fil et cable pour un tel fournisseur de fil
EP1518949A2 (fr) 2003-09-29 2005-03-30 Murata Kikai Kabushiki Kaisha Métiers à filer à vortex d'air ayant des passages spéciaux pour les fibres
EP1826299A2 (fr) 2006-02-28 2007-08-29 Murata Kikai Kabushiki Kaisha Dispositif de filage et procédé à filer
DE102007027467A1 (de) * 2007-06-14 2008-12-18 König, Reinhard, Dr. Ing. Maschine zum Spinnen und Stricken sowie ein Verfahren
WO2010028513A1 (fr) * 2008-09-09 2010-03-18 Rotorcraft Ag Dispositif d’étirage pour un métier à tricoter

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877254A (en) 1973-07-30 1975-04-15 Stevens & Co Inc J P Method and apparatus for knitting fabric from untwisted staple fibers
US5134863A (en) * 1991-05-10 1992-08-04 Mayer Industries, Inc. Circular sliver knitting machine having increased carding capacity
WO2004079068A2 (fr) 2003-03-06 2004-09-16 Koenig Reinhard Tissu maille, procede et dispositif pour le realiser
WO2004097093A2 (fr) * 2003-04-26 2004-11-11 Memminger-Iro Gmbh Fournisseur de fil et cable pour un tel fournisseur de fil
EP1518949A2 (fr) 2003-09-29 2005-03-30 Murata Kikai Kabushiki Kaisha Métiers à filer à vortex d'air ayant des passages spéciaux pour les fibres
EP1826299A2 (fr) 2006-02-28 2007-08-29 Murata Kikai Kabushiki Kaisha Dispositif de filage et procédé à filer
DE102007027467A1 (de) * 2007-06-14 2008-12-18 König, Reinhard, Dr. Ing. Maschine zum Spinnen und Stricken sowie ein Verfahren
WO2008151608A1 (fr) * 2007-06-14 2008-12-18 Koenig Reinhard Métier de tricotage circulaire pour fabriquer des tricots en utilisant au moins partiellement des matières fibreuses
WO2010028513A1 (fr) * 2008-09-09 2010-03-18 Rotorcraft Ag Dispositif d’étirage pour un métier à tricoter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI707073B (zh) * 2018-12-21 2020-10-11 魏誌亮 圓形編織機變色頭之打結裝置

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CH700380A2 (de) 2010-08-13
TW201033424A (en) 2010-09-16

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