EP0297171A1 - Mehrsystemige Webmaschine - Google Patents

Mehrsystemige Webmaschine Download PDF

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Publication number
EP0297171A1
EP0297171A1 EP87115300A EP87115300A EP0297171A1 EP 0297171 A1 EP0297171 A1 EP 0297171A1 EP 87115300 A EP87115300 A EP 87115300A EP 87115300 A EP87115300 A EP 87115300A EP 0297171 A1 EP0297171 A1 EP 0297171A1
Authority
EP
European Patent Office
Prior art keywords
guide
weft thread
drive
loom according
guide blade
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.)
Withdrawn
Application number
EP87115300A
Other languages
German (de)
English (en)
French (fr)
Inventor
Adolf Dipl.-Ing. Linka
Franz Lanthaler
Heinrich Frommelt
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.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
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 Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0297171A1 publication Critical patent/EP0297171A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/26—Travelling-wave-shed looms

Definitions

  • the invention relates to a multi-system weaving machine with a magnetic weft thread drive, with an at least one essentially rectilinear region and at least one adjoining curved region having an endless guideway for the weft thread carriers, which is bounded on one side by a guide blade over at least part of the length of the rectilinear region over the fabric width is on which the weft thread carriers are guided, the weft thread carriers being permanently magnetically coupled to individual drive segments, which are mounted in a fixed, side-by-side mutual assignment next to the guideway of the weft thread carriers and which are associated with a drive source which drives them together.
  • Such a multi-system weaving machine is described, for example, in DE-PS 30 16 182 in a two-sided construction, the so-called back-to-back construction.
  • the weft thread carriers On the front and the back of this loom, the weft thread carriers each pass through a straight section of their guideway, in the Area one or more fabric webs are generated.
  • the weft thread carriers are driven via the drive segments, which are butted against one another at the end of an endless chain, each of which carries a row of permanent magnets on a side facing the shed which, together with permanent magnets arranged in the respective weft thread carrier, produce a magnetic coupling between the weft thread carrier and the drive segment , as explained in principle in US-PS 3618 640 and DE-PS 17 85 147.
  • the two rectilinear sections of the guideway of the weft thread carriers are connected to one another by two arcuate curved return sections, in the area of which the weft thread carriers emerging from the fabric are guided in a semicircular way.
  • two sprockets are provided in the area of the return sections, via which the drive segments, which, as mentioned, are connected to form an endless chain, are spread out like a fan when passing through this return section.
  • the weft thread carriers are guided by a straight guide blade, which is formed by the reed and represents a stable slideway for the weft thread carriers magnetically coupled to their drive segments.
  • the reed rods also serve as a guide for the weft stop slats.
  • the weft thread carriers are taken over directly by the drive segments, so that between the facing pole faces of the permanent magnets, the drive segments and the weft thread carriers there is only a plastic slide film of the weft thread carriers, which is on the the side of the weft thread carrier facing the guide blade is provided in order to ensure a low-friction sliding movement of the weft thread carrier on the guide blade. Because of the relatively small air gap between the associated pole faces of the permanent magnets, the attractive forces acting between these pole faces are relatively large, but the fundamental problem arises that after passing through the semicircular return sections of the guideway, the weft thread carriers return to the respective straight guideway section guiding sheet must be applied.
  • the air gap between the permanent magnets, the weft support and the drive segments must be increased accordingly against the attractive force between the permanent magnets when the weft thread carriers run onto the guide blade. It must be ruled out in any case that the weft thread carriers hit against an abrupt movement resistance in their guideway, which leads to a detachment of the weft thread carriers from the Drive segments could lead. Apart from that, this would result in considerable noise pollution, combined with excessive stress on the sliding surfaces on the weft thread carriers.
  • the object of the invention is therefore to remedy this situation and to create a multi-system weaving machine in which not only are the weft thread carriers magnetically held to tear off on the drive segments when passing through the curved return sections, but also ensures a low-noise and wear-free smooth transition of the weft thread carriers to the guide blade is.
  • the multi-system weaving machine mentioned at the outset is characterized according to the invention in that the guideway for the weft thread carriers in the curved region has a correspondingly curved, curved guide sheet made of non-magnetic material and the curvature of the guide sheet follows the guide sheet at a predetermined radial distance outside next to the guide sheet
  • Guide means are arranged so that on each drive segment a drive part which can be magnetically coupled to a weft thread carrier is movably mounted transversely to the guideway, which is held in elastic contact with the guide blade or the guide blade, and that each weft thread carrier in the curved region of the guideway on it Is lying on the inside of the guide sheet and is supported on its opposite outside against the guide means.
  • the arc-shaped guide sheet made of non-magnetic material in cooperation with the guide means, ensures perfect guiding of the weft thread carriers even when passing through the respective arcuately curved area of the guide track.
  • the thickness of the guide blade is chosen so small that the magnetic attraction forces acting through the "air gap" thus formed are sufficient to securely tie the weft thread carrier to the drive segment.
  • the radially outer guide means in any case prevent an unintentional release of a weft thread carrier and thus also act as a safety device.
  • the guide sheet has the same thickness as the subsequent guide sheet, which ensures a smooth, seamless transition of the weft thread carriers from the guide sheet to the guide sheet.
  • the curved curved guide blade is thinner than the guide blade. It is then expedient if the arcuate guide blade is attached to the guide blade on at least one side via a ramp-like connecting blade consisting of non-magnetic material, forming a continuous guide surface for the weft thread carriers and / or the drive parts connects.
  • the connecting sheet can be a separate part; Particularly simple structural relationships result, however, if the connecting sheet is part of the correspondingly profiled guide sheet.
  • the ramp-shaped profiled connection sheet ensures a gentle, gentle transfer of the weft thread carriers from the guide sheet to the thicker guide sheet.
  • a connecting sheet can also be arranged on the outlet side of the guide sheet in order to bring about a gentle, low-noise transfer of the weft thread carriers from the guide sheet to the curved guide sheet at this point.
  • the guide means can advantageously have a guide rail which interacts with the weft thread carriers and extends at least over the curved region.
  • the special training and profile shape of this guide rail include depending on the shape of the weft thread carrier used.
  • each weft thread carrier can only be supported against the guide means at at least one locally limited support point in order to prevent the occurrence of major friction losses.
  • the elongated weft thread carrier can expediently be supported against the guide means at two support points which are located near the two ends of the weft thread carrier.
  • the inherent unstable support of the weft thread carrier on the guide sheet is therefore stabilized, as is supported on the opposite outside of the weft thread carrier at the two points mentioned at the front and rear on the guide means.
  • the overall result is a three-point guide for the weft thread carrier, which prevents the weft thread carrier from swinging and ensures an exact transfer to the subsequent guide sheet.
  • each drive part is advantageously mounted on its drive segment via spring means.
  • these spring means can have at least one leaf spring carrying the drive part and connected to the drive segment.
  • each drive part and / or each weft thread carrier has a substantially flat sliding surface which interacts with the guide and the guide blade, which is smooth and designed to achieve a particularly favorable pairing of the slide with the guide blade and the guide blade.
  • the sliding surface can expediently At the ends lying in the direction of movement at the front, connect the sliding surface to a contact surface that springs back from the guide or guide blade, which allows the weft thread carrier and / or the drive part to be tilted slightly, and also to pass over impurities that may occur on the guide blade or guide blade, etc. . facilitated.
  • the sliding surface can be formed by a thin layer of a non-magnetic, friction-reducing material, for example a corresponding lacquer or synthetic resin layer, but it has proven to be particularly advantageous if the layer is made of a thin film or plate of friction-reducing material Material consists, which is attached to the weft carrier and / or the drive part.
  • the thin film or plate can be releasably attached in the area of the contact surface and thus easily replaced when worn, while the attachment in the area of the contact surface ensures that there is no burr in the direction of travel on which warp threads could get caught. If the film is an adhesive film, additional additional holding or guiding devices on the weft thread carrier or the drive part are unnecessary.
  • the arrangement can be such that each weft thread carrier and / or each of the skid-shaped drive parts are arranged sunk in the region of the sliding surface Has permanent magnets whose pole faces are covered by the thin layer.
  • the multi-system weaving machine shown in FIG. 1 is constructed in a double-flat, so-called back-to-back construction.
  • the machine has a machine frame 1; it is set up for the simultaneous production of four fabric webs 2.
  • Each of the fabric webs 2 is wound up into a goods bale 3 rotatably mounted on the machine frame 1.
  • the warp threads 5 drawn off from the warp beams 4 rotatably mounted on the machine frame 1 are progressively moved apart in the direction of an arrow 6 by healds 7 movable transversely to the fabric webs 4 to form compartments 8 (FIG. 3), each compartment being traversed by a weft carrier 9 , the shape of which is shown in detail, for example, in FIGS. 3, 4.
  • the weft thread carriers 9 run one behind the other at a predetermined distance in the manner shown in FIGS. 1, 2 on a guideway which on one side by a guide blade 10 in the form of a reed and on the other side by weft thread stop blades 11 (FIG. 3) is formed, which are pivotally mounted on a bed 12 arranged on the machine frame 1 about a hinge point at 13. Their lateral guidance takes place on the one hand by the guide blade 10 and on the other hand by guide rods 14 inserted into the bed 12 at a distance.
  • the mechanism which gives them their pivoting movement is not shown in detail; it is known and in principle consists of two rollers which move together with the weft thread carriers 9 and which cause the tilting movement around the articulation point 13.
  • the guideway along which the weft thread carriers 9 run has two rectilinear sections 15a (FIG. 2) and two adjoining semicircularly curved return sections 15b.
  • the weft thread carriers 9 are moved in the same direction by drive segments 16, which are either articulated directly to one another at articulation points 17 (FIG. 2) or which are fastened next to one another on an endless chain, while either passing through the straight sections 15a of the guideway adjacent end faces 20 can be arranged adjacent to one another (FIG. 2) or at a distance from one another.
  • the drive segments 16 combined in this way to form an endless chain are each guided in the curved return sections 15b via a chain wheel 21 which is rotatably mounted about a vertical axis in the machine frame 1, at least one of which is coupled to a drive source, not shown, which rectifies the drive segments 16 Movement in the direction of arrow 6 of Fig. 1, 2 granted.
  • the individual drive segments 16 are guided on suitable guide rails.
  • the healds 7 facing underside they carry control channels, not shown in detail, into which feet formed on the healds of the healds 7 protrude, as is explained in principle in US Pat. No. 37 49 135 and DE-PS 19 63 208 .
  • weft thread carriers 9 are supplied in succession from bobbins 23 from (Fig. 1) via a weft thread delivery device shown schematically at 24 with cut weft pieces.
  • the weft delivery devices 24 are described, for example, in US Pat. No. 3,626,990.
  • Each of the drive segments 16 carries, on the front side facing the guideway of the weft thread carriers 9, an essentially skid-shaped, elongated drive part 25, preferably made of plastic material, which has a flat surface 26 on its front side, into which the pole faces of a number - in the present case six - Permanent magnets 27 are inserted, which are arranged next to each other at a distance.
  • the flat surface 26 is followed by an arcuate curved contact surface 27, which springs back toward the drive segment 16 and in the area of which a transverse groove 28 is provided, in which a thin sliding film 29 designed as an adhesive film is clamped.
  • the slide film 29 consists of a friction-reducing material, for example tetrafluoroethylene, and completely covers the flat surface 26, at the same time forming a slide surface on its outside.
  • the drive part 25 is by means of a leaf spring 30 projecting on one side on a bearing block 31 on the front of the associated drive segment 16 transversely to the guideway of the
  • the leaf spring 30 presses the drive part 25 with elastic prestress against the guide leaf 10 or an arcuate curved guide leaf 32 adjoining the guide leaf 10 in the arcuate return region 15b, as can be seen from FIGS .
  • the guide sheet 32 which is made of a non-magnetic material and is essentially semicircularly curved, is thinner than the guide sheet 10 which forms the respective rectilinear region 15a. In order to give an idea of the order of magnitude, it can have a thickness of 1 mm, for example The thickness of the guide sheet 10 is 3 to 4 mm.
  • the transition between the guide sheet 32 having a constant thickness and the two subsequent guide sheets 10 is in each case formed by a connecting sheet 33 (FIG. 4) which is wedge-shaped or ramp-shaped in cross section, which likewise consists of a non-magnetic material and in one piece on the guide sheet 32 in the exemplary embodiment shown is molded.
  • the arrangement is such that the slide or guideway 34 for the weft thread carrier 9 lying on the outside adjoins the outer slide or guideway 35 of the respective guide sheet 10 without a step, while on the inside the drive parts 25 are connected via a ramp-like track by the guide sheet 32 are gently guided onto the guide sheet 10 or pass from the guide sheet 10 to the guide sheet 32.
  • a weft thread carrier 9 is arranged opposite each drive part 25 and is permanently magnetically coupled to the drive part 25.
  • each weft thread carrier 9 is provided on its side facing the drive part 25 with permanent magnets 36, the pole face of which is covered by a slide film 37 made of plastic material (FIG. 4).
  • the arrangement and polarity of the permanent magnets 26, 36 are described in detail in US-PS 36 18 640 and DE-PS 17 85 147. The interaction of the permanent magnets 26, 36 results in the aforementioned magnetic coupling of the weft thread carriers 9 to the drive elements 25 and thus the drive segments 16.
  • the sliding surface 38 formed by the sliding film 37 of the elongated, substantially parallel-flanked weft thread carrier 39 is flat because the sliding film 37 is supported by a substantially flat surface 39 of the weft thread carrier 9, into which the pole surfaces of the permanent magnets 36 are embedded.
  • the sliding film 37 is otherwise, similarly to the drive part 25, clamped in a transverse groove 41 in the region of an arcuate recessed contact surface 40 which continues the flat surface 39 in the running direction. It is designed as an adhesive film and also consists of a friction-reducing material, for example polytetrafluoroethylene.
  • Both slide films 29, 37 are interchangeable. Embodiments are conceivable in which the sliding films 29, 37 are made of a friction-reducing material by means of a firmly applied plastic or synthetic resin layer are replaced. A thin plate made of the appropriate material could also be used in individual cases instead of the slide films 29, 37.
  • each of the weft thread carriers 9 passing through the semicircularly curved return section 15b of the guide track bears against the guide blade 32 at a locally limited point 43 on its front side facing the associated drive part 25 - Seen in the direction of travel - is approximately in the middle of the flat surface 39, while on the opposite outside each of the weft carrier 9 is supported at two localized locations at 44 and 45 near the two ends of the weft carrier against the adjacent inner wall of the guide rail 42 .
  • the associated drive parts 25 are pressed in the same way with their sliding film 29 onto the inside of the guide blade 10 and guided thereon.
  • the thickness of the guide blade 10 determines the air gap between mutually interacting, assigned pole faces of the permanent magnets 26, 36.
  • each weft thread carrier 9 runs from the sliding surface 35 of the guide sheet 10 without a step onto the adjoining sliding or guide surface 34 of the connecting sheet 33 and then the guide sheet 32 on.
  • the drive part 25 remains in contact with the leaf spring 30 thanks to the resilient mobility Inner surface of the connecting blade 33 and then of the guide blade 32, the area initially in the area of the guide blade 10 passing over the entire sliding surface into a localized system at two points at the front and rear ends of the drive part 25, such that the latter has its flat surface 26 forms a chord to the guide blade 32.
  • the weft thread carrier 9 running from the straight guide blade 10 is initially lifted from the guide blade 33 with increasing curvature of the surface 34 of the semicircular guide blade 32 at its front end in the direction of travel until it starts at 45 on the inside of the guide rail 42 and from there into the 2.4 visible position is forced, in which it runs with its sliding surface 38 essentially tangential to the outer surface of the guide blade 32 and against the inside of the guide rail 42 at the two support points 44, 45 on both sides of the central support point 43 facing the drive part 25 is supported radially outwards.
  • each weft thread carrier 9 traverses the guideway section 15b until it is guided again to the new straight guide sheet 10 via the corresponding connecting sheet 33. Since the outer surfaces 34, 35 of the connecting blade 33 and the guide blade 10 are tangentially one inside the other pass over, the weft thread carrier 9 is passed gently and smoothly onto the guide sheet 10, while on the opposite side of the connecting sheet 33 the associated drive part 25 adapts to the course of the inner surface of the connecting piece 33 thanks to its movable mounting and thus also runs smoothly onto the guide sheet 10 .
  • the arcuate recessed contact surfaces 27, 40 of the drive part 25 and the weft thread carrier 9 facilitate the passage through the arcuate curved guideway sections 15b.
  • a weft thread delivery device 24 introduces weft thread, which each weft thread carrier 9 then inserts into the compartment 8, into the weft carrier 9.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP87115300A 1987-05-30 1987-10-20 Mehrsystemige Webmaschine Withdrawn EP0297171A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3718307A DE3718307C1 (de) 1987-05-30 1987-05-30 Mehrsystemige Webmaschine
DE3718307 1987-05-30

Publications (1)

Publication Number Publication Date
EP0297171A1 true EP0297171A1 (de) 1989-01-04

Family

ID=6328796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115300A Withdrawn EP0297171A1 (de) 1987-05-30 1987-10-20 Mehrsystemige Webmaschine

Country Status (9)

Country Link
US (1) US4848410A (enrdf_load_stackoverflow)
EP (1) EP0297171A1 (enrdf_load_stackoverflow)
JP (1) JPS63303146A (enrdf_load_stackoverflow)
KR (1) KR880014155A (enrdf_load_stackoverflow)
CN (1) CN1016805B (enrdf_load_stackoverflow)
BR (1) BR8800828A (enrdf_load_stackoverflow)
DE (1) DE3718307C1 (enrdf_load_stackoverflow)
IN (1) IN167110B (enrdf_load_stackoverflow)
SU (1) SU1602395A3 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5511587A (en) * 1990-09-28 1996-04-30 Citizen Watch Co., Ltd. Wear-resistant reed for a high-speed loom
KR100464836B1 (ko) * 2001-03-30 2005-01-05 이창권 순환식 위사위입기구
KR100425730B1 (ko) * 2001-10-13 2004-04-03 엘지전자 주식회사 프로젝션 티브이의 영상출력 제어 방법 및 장치
US6948530B2 (en) * 2004-01-02 2005-09-27 Yi-Shan Yao Weaving machine
CN102212927B (zh) * 2011-06-24 2013-05-29 南通纺织职业技术学院 纬纱曲线梭织物及其织造方法和专用弹性自由筘
CN109208156B (zh) * 2018-11-23 2020-09-22 西安工程大学 一种双层经向多梭口三维织机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618640A (en) * 1968-08-16 1971-11-09 Adolf Linka Magnetic shuttle drive for continuously progressing sheds in weaving looms
CH581215A5 (en) * 1974-10-01 1976-10-29 Tsnii Chlopchatobumasch Promy Shuttle positioner and transporter in a multiple feed loom - lining up shuttle accurately in and out of the shed
EP0039009A1 (de) * 1980-04-26 1981-11-04 Adolf Dipl -Ing. Linka Verfahren und Vorrichtung zum pneumatischen Eintragen des Schussfadens in die Schussfadenträger einer mehrsystemigen Webmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1066958B (de) * 1959-10-08 Durkoppwerke Aktiengesellschaft, Bielefeld Flachwebmaschine
GB709299A (en) * 1951-11-06 1954-05-19 Walther Filter Improvements in electromagnetic driving devices for the shuttles of looms
CH414489A (de) * 1963-03-19 1966-05-31 Oerlikon Buehrle Holding Ag Verfahren zum Beschicken der Schützen von Webmaschinen mit Faden, und Einrichtung zur Durchführung des Verfahrens
DE1785416A1 (de) * 1968-09-20 1972-05-04 Adolf Linka Verfahren und Vorrichtung zur periodischen Lieferung abgemessener Schussfadenlaengen von einer Spule in einen den Schussfaden in einen kontinuierlich bewegten Schuetzen eintragenden pneumatischen Injektor
DE1963208C3 (de) * 1969-12-17 1974-07-04 Adolf 7451 Hechingensickingen Linka Wellenwebmaschine
JPS52148262A (en) * 1975-10-04 1977-12-09 Maieru Unto Co Device for monitoring shuttle of herringbone twill weaving machine
DE3346030A1 (de) * 1983-12-20 1985-06-20 Institute für Textil- und Faserforschung Stuttgart, 7306 Denkendorf Webmaschine
US4762153A (en) * 1987-01-15 1988-08-09 Chuang Wu Chen Weaving loom with magnetic shuttle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618640A (en) * 1968-08-16 1971-11-09 Adolf Linka Magnetic shuttle drive for continuously progressing sheds in weaving looms
CH581215A5 (en) * 1974-10-01 1976-10-29 Tsnii Chlopchatobumasch Promy Shuttle positioner and transporter in a multiple feed loom - lining up shuttle accurately in and out of the shed
EP0039009A1 (de) * 1980-04-26 1981-11-04 Adolf Dipl -Ing. Linka Verfahren und Vorrichtung zum pneumatischen Eintragen des Schussfadens in die Schussfadenträger einer mehrsystemigen Webmaschine

Also Published As

Publication number Publication date
CN1016805B (zh) 1992-05-27
CN88102400A (zh) 1988-12-21
KR880014155A (ko) 1988-12-23
SU1602395A3 (ru) 1990-10-23
BR8800828A (pt) 1988-12-20
JPS63303146A (ja) 1988-12-09
IN167110B (enrdf_load_stackoverflow) 1990-09-01
DE3718307C1 (de) 1988-07-21
US4848410A (en) 1989-07-18

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