EP0059473B1 - Travelling cleaning arrangement for drawing frames of spinning and twisting machines - Google Patents

Travelling cleaning arrangement for drawing frames of spinning and twisting machines Download PDF

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Publication number
EP0059473B1
EP0059473B1 EP82101600A EP82101600A EP0059473B1 EP 0059473 B1 EP0059473 B1 EP 0059473B1 EP 82101600 A EP82101600 A EP 82101600A EP 82101600 A EP82101600 A EP 82101600A EP 0059473 B1 EP0059473 B1 EP 0059473B1
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EP
European Patent Office
Prior art keywords
blowing
suction
machine
disposed
hoses
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
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EP82101600A
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German (de)
French (fr)
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EP0059473A1 (en
Inventor
Winfried Rümmele
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Individual
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Individual
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25791562&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0059473(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19813108180 external-priority patent/DE3108180A1/en
Application filed by Individual filed Critical Individual
Priority to AT82101600T priority Critical patent/ATE11798T1/en
Publication of EP0059473A1 publication Critical patent/EP0059473A1/en
Application granted granted Critical
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like
    • D01H11/005—Arrangements for confining or removing dust, fly or the like with blowing and/or suction devices
    • D01H11/006—Arrangements for confining or removing dust, fly or the like with blowing and/or suction devices travelling along the machines

Definitions

  • the invention relates to a movable cleaning device for drafting systems on spinning and twisting machines, in particular roving or ring spinning machines, of the type specified in the preamble of claim 1.
  • blowing nozzles and suction openings are provided which coat the work area.
  • the fiber fly that arises and is deposited in the area of the drafting system, for example, is whirled up and falls on the machine parts underneath and especially the floor.
  • the fiber flight is taken up by this by means of suction mouthpieces which are provided on long suction nozzles which hang from the cleaning unit which can be moved above the spinning machine.
  • a ring spinning machine 10 shown in cross section in FIG. 1 is provided with drafting devices 11. Rails 12 are arranged above the ring spinning machine 10, on which rails a cleaning unit 13 can be moved in the longitudinal direction of the ring spinning machine 10.
  • the cleaning unit 13 is formed in a known manner on two sides and accordingly has blow hoses 14 and 15 and suction hoses 16 and 17 hanging down on both sides of the ring spinning machine 10.
  • the blow hose 14 is provided with slot nozzles 18 and 19 which generate a horizontal, fan-shaped air curtain, not shown, above and below the working area of the drafting device 11.
  • the fan-shaped air curtain preferably has an opening angle which is dimensioned such that at least between the suction hoses 16 and 17 located opposite each other on both sides of the ring spinning machine 10, sealing air curtains are formed above and below the working area of the drafting system 11.
  • blow hose 14 can have further smaller blow nozzles 20.
  • the blow hose 15 is substantially shorter than the blow hose 14 and opens into an adjustable ball head 21 which carries a blow nozzle 22.
  • the blowing nozzle 22 is designed and arranged in such a way that it emits a strong flat air jet which extends substantially perpendicular to the horizontal air curtains of the slot nozzles 18 and 19 and is arranged approximately in the center of the horizontal air curtains.
  • the blow hose 15 is located in the immediate vicinity of the blow hose 14 between the two suction hoses 16 and 17.
  • Each of the suction hoses 16 and 17 is provided with at least one suction nozzle 23.
  • two suction mouthpieces 23 are provided in the lower region of the drafting system 11, which are offset somewhat in height and on the circumference of the suction hoses 16 and 17.
  • the suction mouthpieces 23 directed in the direction of the drafting unit 11 take up the fiber flight from the center, while the suction mouthpieces pointing somewhat outwards capture the edge regions of the fan-shaped sealing air curtains.
  • the free end of the shorter blow hose 15 can be inclined in the direction of the drafting devices 11.
  • the flat cleaning air jet emerging from the blow hose 15 or the blowing nozzle 22 immediately cleans the rollers of the drafting system and is loaded with dust and fiber fly in the direction of the lateral suction hoses 16 and 17, where it enters the suction mouthpieces 23 without dust or fiber fly lower sealing air curtain can pass the slot nozzle 19.
  • the exit or working speed of the air emerging from the nozzle 22 can be increased without the risk that dust and / or fiber fly on the underlying machine parts, such as the ring bench, and the floor of the workshop are blown and themselves can deposit there.
  • suction mouthpieces 24 are provided at the lower free ends of the suction hoses 16 and 17, which cover the bottom 25 and absorb dust and fiber fly, which have been blown off by the blow nozzles 20 from the ring spinning machine 10.
  • the suction mouthpieces 23 are brought as far as possible to the drafting units 11. However, their mouths are arranged in such a way that - as can be seen in FIG. 1 - the cleaning device can be moved beyond the machine housing 26 at the end of the ring spinning machine 10, for example to operate an adjacent ring spinning machine.
  • the suction mouthpieces 23 are expediently arranged directly above the lower slot nozzle 19.
  • suction mouthpieces 23 can also be arranged on the suction hoses 16 and 17 between the slot nozzles 18 and 19.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Description

Die Erfindung bezieht sich auf eine verfahrbare Reinigungsvorrichtung für Streckwerke an Spinn- und Zwirnmaschinen, insbesondere Vorspinn- bzw. Ringspinnmaschinen, der im Oberbegriff von Anspruch 1 angegebenen Art.The invention relates to a movable cleaning device for drafting systems on spinning and twisting machines, in particular roving or ring spinning machines, of the type specified in the preamble of claim 1.

Bei einer bekannten, auf Schienen verfahrbaren Vorrichtung zum pneumatischen Abblasen und Absaugen von Faserflug (US-A-3486184) sind Blasdüsen und Saugöffnungen vorgesehen, die die Arbeitsstelle bestreichen. Dabei wird der beispielsweise im Bereich des Streckwerks entstehende und abgelagerte Faserflug aufgewirbelt und fällt auf darunterliegende Maschinenteile und besonders den Boden. Von diesem wird der Faserflug mittels Saugmundstücken aufgenommen, die an langen Saugrüsseln vorgesehen sind, die von dem Reinigungsaggregat herabhängen, das oberhalb der Spinnereimaschine verfahrbar ist.In a known device for the pneumatic blowing and suction of fiber fly, which can be moved on rails (US-A-3486184), blowing nozzles and suction openings are provided which coat the work area. The fiber fly that arises and is deposited in the area of the drafting system, for example, is whirled up and falls on the machine parts underneath and especially the floor. The fiber flight is taken up by this by means of suction mouthpieces which are provided on long suction nozzles which hang from the cleaning unit which can be moved above the spinning machine.

Es ist deshalb Aufgabe der vorliegenden Erfindung, Faserflug und Staub im Arbeitsbereich des Streckwerks zu konzentrieren und unmittelbar abzuführen.It is therefore an object of the present invention to concentrate and remove fiber fly and dust in the working area of the drafting system.

Zur Lösung dieser Aufgabe werden bei der Reinigungsvorrichtung nach dem Oberbegriff von Anspruch 1 erfindungsgemäß die kennzeichnenden Merkmale vorgeschlagen.To achieve this object, the characterizing features are proposed according to the invention in the cleaning device according to the preamble of claim 1.

Hierdurch wird der Vorteil erreicht, daß Faserflug und Staub innerhalb des Arbeitsbereichs des Streckwerks konzentriert werden und beim Abblasen nicht mehr auf den Boden der Werkshalle oder Maschinenteile fallen, die sich wie die Ringbank unterhalb des Streckwerks bzw. der Streckwerkbank befinden. Dadurch wird gleichzeitig verhindert, daß Staub und Faserflug aus dem unmittelbaren Arbeitsbereich des Streckwerks nach oben oder zu den Seiten hin austreten können. Erfahrungsgemäß entsteht am Streckwerk der meiste Faserflug, der sich u. a. auf der Streckwerkbank ablagert, wenn die Reinigungsvorrichtung gerade ein anderes Streckwerk säubert. Der von der Blasdüse abgegebene, auf die Walzen des Streckwerks gerichtete Luftstrahl kann ziemlich stark ausgelegt sein, da der durch ihn gelöste Faserflug nach außen unmittelbar in die beiderseits angeordneten Saugmundstücke geleitet wird. Der zentrale Putzstrahl und das Streckwerk sind damit allseitig von sperrenden Luftschleiern umschlossen.This has the advantage that fiber fly and dust are concentrated within the working area of the drafting system and no longer fall on the floor of the factory building or machine parts which, like the ring rail, are located below the drafting system or the drafting system bench. This also prevents dust and fiber fly from escaping from the immediate working area of the drafting system upwards or to the sides. Experience has shown that most of the fiber flight occurs on the drafting system. a. deposits on the drafting system bench when the cleaning device is currently cleaning another drafting system. The air jet emitted by the blowing nozzle and directed onto the rollers of the drafting system can be designed to be quite strong, since the fiber fly released by it is directed directly into the suction mouthpieces arranged on both sides. The central cleaning jet and the drafting system are thus enclosed on all sides by blocking air curtains.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen unter Schutz gestellt.Advantageous embodiments of the invention are protected in the subclaims.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung wiedergegeben, das anhand der nachfolgenden Beschreibung näher erläutert wird. Es zeigt

  • Fig. 1 eine Ringspinnmaschine mit der Reinigungsvorrichtung,
  • Fig. 2 einen Schnitt gemäß Linie II-II in Fig. 1, wobei die Ringspinnmaschine fortgelassen ist und
  • Fig. 3 einen Schnitt gemäß Linie 111-111 in Fig. 1.
In the drawing, an embodiment of the invention is shown, which is explained in more detail with reference to the following description. It shows
  • 1 is a ring spinning machine with the cleaning device,
  • Fig. 2 shows a section along line II-II in Fig. 1, wherein the ring spinning machine is omitted and
  • 3 shows a section along line 111-111 in FIG. 1.

Eine in Fig. 1 im Querschnitt dargestellte Ringspinnmaschine 10 ist mit Streckwerken 11 versehen. Oberhalb der Ringspinnmaschine 10 sind Schienen 12 angeordnet, auf denen ein Reinigungsaggregat 13 in Längsrichtung der Ringspinnmaschine 10 verfahrbar ist. Das Reinigungsaggregat 13 ist in bekannter Weise zweiseitig ausgebildet und hat demgemäß auf beiden Seiten der Ringspinnmaschine 10 herabhängende Blasschläuche 14 und 15 sowie Saugschläuche 16 und 17.A ring spinning machine 10 shown in cross section in FIG. 1 is provided with drafting devices 11. Rails 12 are arranged above the ring spinning machine 10, on which rails a cleaning unit 13 can be moved in the longitudinal direction of the ring spinning machine 10. The cleaning unit 13 is formed in a known manner on two sides and accordingly has blow hoses 14 and 15 and suction hoses 16 and 17 hanging down on both sides of the ring spinning machine 10.

Der Blasschlauch 14 ist mit Schlitzdüsen 18 und 19 versehen, die oberhalb und unterhalb des Arbeitsbereichs des Streckwerks 11 einen nicht dargestellten horizontalen, fächerförmigen Luftschleier erzeugen. Der fächerförmige Luftschleier hat vorzugsweise einen Öffnungswinkel, der so bemessen ist, daß mindestens zwischen den sich auf beiden Seiten der Ringspinnmaschine 10 gegenüberliegenden Saugschläuchen 16 bzw. 17 oberhalb und unterhalb des Arbeitsbereichs des Streckwerks 11 Sperrluftschleier gebildet sind.The blow hose 14 is provided with slot nozzles 18 and 19 which generate a horizontal, fan-shaped air curtain, not shown, above and below the working area of the drafting device 11. The fan-shaped air curtain preferably has an opening angle which is dimensioned such that at least between the suction hoses 16 and 17 located opposite each other on both sides of the ring spinning machine 10, sealing air curtains are formed above and below the working area of the drafting system 11.

Oberhalb und/oder unterhalb des zwischen den Schlitzdüsen 18 und 19 liegenden Abschnitts kann der Blasschlauch 14 weitere kleinere Blasdüsen 20 aufweisen.Above and / or below the section lying between the slit nozzles 18 and 19, the blow hose 14 can have further smaller blow nozzles 20.

Der Blasschlauch 15 ist wesentlich kürzer ausgebildet als der Blasschlauch 14 und mündet in einen verstellbaren Kugelkopf 21, der eine Blasdüse 22 trägt. Die Blasdüse 22 ist derart ausgebildet und angeordnet, daß sie einen starken flachen Luftstrahl abgibt, der sich im wesentlichen senkrecht zu den horizontalen Luftschleiern der Schlitzdüsen 18 und 19 erstreckt und etwa im Zentrum der horizontalen Luftschleier angeordnet ist. Zu diesem Zweck befindet sich der Blasschlauch 15 in unmittelbarer Nähe des Blasschlauchs 14 zwischen den beiden Saugschläuchen 16 und 17.The blow hose 15 is substantially shorter than the blow hose 14 and opens into an adjustable ball head 21 which carries a blow nozzle 22. The blowing nozzle 22 is designed and arranged in such a way that it emits a strong flat air jet which extends substantially perpendicular to the horizontal air curtains of the slot nozzles 18 and 19 and is arranged approximately in the center of the horizontal air curtains. For this purpose, the blow hose 15 is located in the immediate vicinity of the blow hose 14 between the two suction hoses 16 and 17.

Jeder der Saugschläuche 16 und 17 ist mit mindestens einem Saugmundstück 23 versehen. Bei dem dargestellten Ausführungsbeispiel sind im unteren Bereich des Streckwerks 11 jeweils zwei Saugmundstücke 23 vorgesehen, die höhenmäßig und auf dem Umfang der Saugschläuche 16 und 17 gegenüber einander etwas versetzt sind. Die in Richtung des Streckwerks 11 gerichteten Saugmundstücke 23 nehmen dabei den Faserflug aus dem Zentrum auf, während die etwas nach außen weisenden Saugmundstücke die Randbereiche der fächerförmigen Sperrluftschleier erfassen.Each of the suction hoses 16 and 17 is provided with at least one suction nozzle 23. In the illustrated embodiment, two suction mouthpieces 23 are provided in the lower region of the drafting system 11, which are offset somewhat in height and on the circumference of the suction hoses 16 and 17. The suction mouthpieces 23 directed in the direction of the drafting unit 11 take up the fiber flight from the center, while the suction mouthpieces pointing somewhat outwards capture the edge regions of the fan-shaped sealing air curtains.

Wie aus Fig. 1 ersichtlich, kann das freie Ende des kürzeren Blasschlauchs 15 in Richtung der Streckwerke 11 geneigt sein. Der aus dem Blasschlauch 15 bzw. der Blasdüse 22 austretende flache Putzluftstrahl reinigt unmittelbar die Walzen des Streckwerks und wird mit Staub und Faserflug beladen in Richtung der seitlichen Saugschläuche 16 und 17 abelenkt, wo er in die Saugmundstücke 23 eintritt, ohne daß Staub oder Faserflug den unteren Sperrluftschleier der Schlitzdüse 19 passieren können. Auf diese Weise kann die Austritts- bzw. Arbeitsgeschwindigkeit der aus der Düse 22 austretenden Luft gesteigert werden, ohne daß die Gefahr besteht, daß Staub und/oder Faserflug auf die darunter befindlichen Maschinenteile, wie beispielsweise die Ringbank, und den Boden der Werkshalle geblasen werden und sich dort ablagern können. Gleichwohl sind an den unteren freien Enden der Saugschläuche 16 und 17 Saugmundstücke 24 vorgesehen, die den Boden 25 bestreichen und Staub und Faserflug aufnehmen, die durch die Blasdüsen 20 von der Ringspinnmaschine 10 abgeblasen worden sind.1, the free end of the shorter blow hose 15 can be inclined in the direction of the drafting devices 11. The flat cleaning air jet emerging from the blow hose 15 or the blowing nozzle 22 immediately cleans the rollers of the drafting system and is loaded with dust and fiber fly in the direction of the lateral suction hoses 16 and 17, where it enters the suction mouthpieces 23 without dust or fiber fly lower sealing air curtain can pass the slot nozzle 19. In this way se, the exit or working speed of the air emerging from the nozzle 22 can be increased without the risk that dust and / or fiber fly on the underlying machine parts, such as the ring bench, and the floor of the workshop are blown and themselves can deposit there. Nevertheless, suction mouthpieces 24 are provided at the lower free ends of the suction hoses 16 and 17, which cover the bottom 25 and absorb dust and fiber fly, which have been blown off by the blow nozzles 20 from the ring spinning machine 10.

Die Saugmundstücke 23 sind möglichst weit an die Streckwerke 11 herangeführt. Ihre Mündungen sind jedoch derart angeordnet, daß - wie aus Fig. 1 ersichtlich - die Reinigungsvorrichtung über die Maschinengehäuse 26 am Ende der Ringspinnmaschine 10 hinaus verfahren werden kann, um beispielsweise eine benachbarte Ringspinnmaschine zu bedienen.The suction mouthpieces 23 are brought as far as possible to the drafting units 11. However, their mouths are arranged in such a way that - as can be seen in FIG. 1 - the cleaning device can be moved beyond the machine housing 26 at the end of the ring spinning machine 10, for example to operate an adjacent ring spinning machine.

Die Saugmundstücke 23 sind zweckmäßigerweise unmittelbar oberhalb der unteren Schlitzdüse 19 angeordnet.The suction mouthpieces 23 are expediently arranged directly above the lower slot nozzle 19.

Es können zwischen den Schlitzdüsen 18 und 19 auch noch weitere Saugmundstücke 23 an den Saugschläuchen 16 und 17 angeordnet sein.Further suction mouthpieces 23 can also be arranged on the suction hoses 16 and 17 between the slot nozzles 18 and 19.

Claims (8)

1. Mobile cleaning device for drawing frames in spinning and twisting machines, in particular preparatory spinning and ring frames, wherein in the working region of the drawing frame blowing nozzles and at least one suction opening for the fibre fly are provided, characterized in that above and below the working region of the drawing frame (11) slot nozzles (18, 19) are disposed which in each case produce a horizontal air curtain, that a blowing nozzle (22) produces a flat air stream which extends substantially perpendicularly to the horizontal air curtains of the slot nozzles (18, 19) and substantially into the centre therebetween, and that on either side of the flat air stream of the blowing nozzle (22) a row of suction mouthpieces (23) is provided.
2. Device according to claim 1, characterized in that the blowing nozzle (22) for generating the flat air stream is a slot nozzle which is disposed on an adjustable ball head (21).
3. Device according to claim 1 or 2, characterized in that the slot nozzles (18,19) for generating the fan-shaped air curtain are disposed on a blowing hose (14) which hangs from a cleaning unit (13) mobile above the machine (10).
4. Device according to any one of claims 1 to 3, characterized in that the blowing nozzle (22) is disposed at the free end of a short blowing hose (15) which also hangs from the cleaning unit (13).
5. Device according to any one of claims 1 to 4, characterized in that from the cleaning unit (13) suction hoses (16, 17) hang which are disposed on either side of the blowing hoses (14, 15) and each comprise at least two suction mouthpieces (23).
6. Device according to any one of claims 1 to 5, characterized in that the cleaning unit (13) movable above the machine (10) is made bilateral and comprises blowing hoses (14, 15) and suction hoses (16,17) hanging down on both sides of the machine.
7. Device according to claims 1 and 6, characterized in that the slot nozzles (18, 19) for generating the horizontal fan-shaped air curtain are disposed on both sides of the machine (10) at the same level.
8. Device according to claims 1 to 7, characterized in that slot nozzles (18, 19), the blowing nozzle (22) and the suction mouthpieces (23) are brought up to the drawing frames (11) but permit the cleaning device to travel round the machine housing (26) at the ends of the machine (10).
EP82101600A 1981-03-04 1982-03-02 Travelling cleaning arrangement for drawing frames of spinning and twisting machines Expired EP0059473B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82101600T ATE11798T1 (en) 1981-03-04 1982-03-02 MOBILE CLEANING DEVICE FOR DRAFTING UNITS ON SPINNING AND TWISTING MACHINES.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3108180 1981-03-04
DE19813108180 DE3108180A1 (en) 1981-03-04 1981-03-04 Spinning-twisting mobile cleaner
US06/409,171 US4484434A (en) 1981-03-04 1982-08-18 Movable cleaning apparatus for drafting mechanism of spinning and twisting machines

Publications (2)

Publication Number Publication Date
EP0059473A1 EP0059473A1 (en) 1982-09-08
EP0059473B1 true EP0059473B1 (en) 1985-02-13

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ID=25791562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101600A Expired EP0059473B1 (en) 1981-03-04 1982-03-02 Travelling cleaning arrangement for drawing frames of spinning and twisting machines

Country Status (2)

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US (1) US4484434A (en)
EP (1) EP0059473B1 (en)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
JPS6052217B2 (en) * 1983-07-11 1985-11-18 村田機械株式会社 Spinning winder winder removal system
EP0267314A1 (en) * 1986-11-11 1988-05-18 LANIFICIO DI NERVESA DELLA BATTAGLIA S.p.A. Spinning machine
US4936086A (en) * 1990-01-25 1990-06-26 Flakt, Inc. Apparatus for stripping yarn ends from spindles
US5177950A (en) * 1990-12-06 1993-01-12 Fowler Jr Floyd N Flexible whirl-cleaning nozzle
DE4107403C2 (en) * 1991-03-08 1999-11-25 Fritz Stahlecker Open end spinning machine
DE4115772C2 (en) * 1991-05-15 1994-10-20 Zinser Textilmaschinen Gmbh Device for automatic replacement of full bobbins for empty tubes on spinning machines
DE9204737U1 (en) * 1992-04-06 1992-05-27 Ernst Jacobi Gmbh, 8906 Gersthofen, De
JPH0625923A (en) * 1992-04-30 1994-02-01 Murata Mach Ltd Fly waste cleaning vehicle
IT233958Y1 (en) * 1994-07-25 2000-02-16 Ser Ma Tes S R L IMPROVED DEVICE FOR ELIMINATING THE RESERVE OF YARN WOUND ON THE SPINDLES OF FILTERING OR TWISTING MACHINES
JP2917112B2 (en) * 1995-10-31 1999-07-12 村田機械株式会社 Textile machine cleaning equipment
CN103031627B (en) * 2012-12-28 2015-03-18 浙江金莱诺纤维有限公司 Water spraying and oil spraying device of flax wet-spinning spinning machine
CN105463640A (en) * 2016-01-08 2016-04-06 新昌县奥泰机械制造有限公司 Installation structure of air blowing hoses special for spinning cleaning machine
CN106978657B (en) * 2017-05-19 2019-02-19 宇金涛 Row's formula for fly frame patrolling cleaning systems draft area gathers blower duct

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DE1291668B (en) * 1963-11-12 1969-03-27 Jacobi E & Co Kg Pneumatic cleaning system for spinning machines or the like.
FR1252288A (en) * 1960-02-24 1961-01-27 Thoma Company Method and device for removing fibers or flying filaments in textile machines, and in particular in spinning or twisting looms
US3245103A (en) * 1963-10-11 1966-04-12 Bahnson Co Overhead traveling cleaner for textile machine
FR1372349A (en) * 1963-10-24 1964-09-11 Jacobi E & Co Kg Mobile pneumatic cleaning device for spinning looms for long-fiber products such as wool, pile yarns and long synthetic fibers
US3276065A (en) * 1964-11-19 1966-10-04 Bahnson Co Traveling cleaner for textile machines
US3429745A (en) * 1965-09-01 1969-02-25 Parks Cramer Co Method of removing fiber waste from spinning frames
US3432877A (en) * 1966-01-18 1969-03-18 Parks Cramer Co Textile machine tending and cleaning apparatus
US3486184A (en) * 1967-12-04 1969-12-30 Bahnson Co Pulsation type traveling cleaners and the like

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Publication number Publication date
EP0059473A1 (en) 1982-09-08
US4484434A (en) 1984-11-27

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