EP0534335B1 - Deckel für eine Spinnbox einer Rotorspinnmaschine - Google Patents

Deckel für eine Spinnbox einer Rotorspinnmaschine Download PDF

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Publication number
EP0534335B1
EP0534335B1 EP92116072A EP92116072A EP0534335B1 EP 0534335 B1 EP0534335 B1 EP 0534335B1 EP 92116072 A EP92116072 A EP 92116072A EP 92116072 A EP92116072 A EP 92116072A EP 0534335 B1 EP0534335 B1 EP 0534335B1
Authority
EP
European Patent Office
Prior art keywords
cover
mounting plate
rotor
bore
tube
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
EP92116072A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0534335A1 (de
Inventor
Manfred Haase
Josef Schermer
Dieter Fritsch
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
RIETER SPINNEREIMASCHINENBAU AG
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 RIETER SPINNEREIMASCHINENBAU AG filed Critical RIETER SPINNEREIMASCHINENBAU AG
Publication of EP0534335A1 publication Critical patent/EP0534335A1/de
Application granted granted Critical
Publication of EP0534335B1 publication Critical patent/EP0534335B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/16—Framework; Casings; Coverings ; Removal of heat; Means for generating overpressure of air against infiltration of dust; Ducts for electric cables
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor

Definitions

  • the invention relates to a mounting plate for fastening a lid according to the preamble of claims 1 and 6 and a lid for a spin box of a rotor spinning machine according to the preamble of claim 11 which can be received by a mounting plate according to claim 6.
  • a mounting plate for receiving a lid for a spin box of a rotor spinning machine and a lid are known from the RU 14 rotor spinning machine from Schubert and Salzer, Maschinenfabrik Aktiengesellschaft, Ingolstadt, Federal Republic of Germany.
  • lids which are called rotor lids for short in the art, form part of the wall of the spinning box in which the spinning rotor rotates. Since there must be negative pressure in the spinning box during thread formation, this is closed and is usually actively vacuumed.
  • the spin box must be opened for mechanical cleaning of the rotor and partly also for pneumatic rotor cleaning. Of course, this is also the case when the rotor is to be replaced.
  • the lid is attached to a mounting plate, which in turn forms part of the top of the rotor box and is pivotable relative to the rotor, for example on the machine frame.
  • a rotor box is shown for example in DE-OS 28 11 960.
  • a cover provided with reference number 36 is shown in FIG.
  • the mounting plate has been omitted in this drawing. In the prior art, this is arranged on the side of the lid facing away from the spinning rotor and in turn is attached to the top, this corresponds to the cover 32 in the figures of DE-OS 28 11 960.
  • the lid not only serves to cover the rotor box, but also contains a channel for feeding the fibers into the rotor, bores for feeding cleaning air into the rotor and a bore for extracting of the thread produced in the rotor from the rotor box.
  • the cover on its rear side which faces away from the rotor, has a threaded bore for connecting the compressed air for rotor cleaning and a bore into the rear a thread take-off tube is inserted. This is connected to the cover by a grub screw running across the hole.
  • the rotor lid consists of an aluminum die-cast part that has to be reworked after casting.
  • the threads for the compressed air connection and for attaching the thread take-off tube are also to be attached, which causes additional processing effort.
  • the rotor lid forms a component on the rotor spinning machine that is sometimes used by the operator of the machine must be replaced.
  • the rotor cover must also be replaced.
  • the disadvantage of the known mounting plates for receiving a cover is the poor ability to mount or remove the cover. By connecting the compressed air line by means of a thread, the compressed air line must first be removed to replace the cover and reconnected to the newly installed cover, which requires the use of tools.
  • the thread take-off tube since it is firmly connected to the cover, is also removed from the machine. As a result, it must be removed from the dismantled cover and fixed to the newly installed cover again. Conversely, it is not possible to replace the thread take-off tube, which is a wearing part on the rotor spinning machine, without removing the cover.
  • the known mounting plate to which the cover is attached, has a stop surface on which the rotor cover is supported, as well as threaded holes for screwing the rotor cover in place.
  • the mounting plate In the area of the air connection and the thread take-off tube of the cover, the mounting plate has only one recess, so that after loosening the fastening screw of the cover, this is removed from the mounting plate together with the air connection and the thread take-off tube. Air connection and thread take-off tube remain firmly connected to the cover and must then be removed from the cover. This is cumbersome and time-consuming due to the limited space. Accordingly, reassembling a cover on the mounting plate is difficult.
  • the object of the present invention is to provide a mounting plate for receiving a cover for the spin box of a rotor spinning machine in such a way that the cover can be replaced particularly easily and quickly.
  • Another object is to design a lid so that it can work with a mounting plate according to the invention.
  • the inventive design of the mounting plate for receiving a lid for a spin box ensures that the connecting line for the compressed air supply of the lid remains in the mounting plate when the lid is removed. An additional disassembly of the air connection on the lid is not necessary. This makes it possible to easily remove the cover from the mounting plate and replace it with a new one. Characterized in that the connection piece is provided with a seal, the cover can cooperate sealingly with the connection piece with an easy-to-machine surface. There is no need to integrate a seal into the lid, which would be very time-consuming. The fact that the connector is fastened in the mounting plate ensures that it does not change its position when the cover is removed.
  • the mounting plate is provided with a centering sleeve, a rotor lid to be mounted can be easily positioned. When replacing a lid, it no longer has to be repositioned in relation to the rotor box and the rotor. It is particularly favorable if the centering bush has a bore into which the thread take-off tube is inserted. This enables a particularly simple construction of the rotor cover.
  • the mounting plate is provided with a receptacle for the thread take-off tube.
  • the thread take-off tube is attached to the mounting plate itself, so the rotor cover can be replaced without removing the thread take-off tube.
  • the receptacle ensures that the thread take-off tube is held by the mounting plate. Positioning in the lid can also be done by guiding the lid. Because the receptacle is designed so that the thread take-off tube is inserted from the side facing away from the cover, the thread take-off tube can be replaced without the cover having to be removed.
  • the centering approach is particularly simple, since this point of the cover must be provided with a hole anyway, which is used for thread withdrawal from the spinning rotor. It is particularly advantageous if the centering approach and the approach for the connection of compressed air have a common plane surface, which can thereby be machined in one operation.
  • the centering bore in the form of a stepped bore, it is possible to center the cover over the larger diameter of the bore, while at the same time the thread take-off tube can be positioned in the rotor cover over the smaller diameter.
  • the distance between the sealing surface and the plane formed by the stops with which the cover rests on the mounting plate is so large that a connection piece for the compressed air line is arranged between the cover and the mounting plate can.
  • the stops on the back of the cover are cylindrical. As a result, they are easy to manufacture in terms of casting technology and offer a sufficiently large contact surface for the cover on the associated mounting plate. It is particularly expedient if the cylindrical stops are provided with bores through which screws can be passed for fastening the cover to the mounting plate. In a further advantageous embodiment, the stops are designed as webs. These can be part of the edge of the lid, for example, and ensure that the lid does not tip over on its contact surface. Further advantageous embodiments of the invention are described in the subclaims.
  • the rotor lid 1 is shown in the front view. This is the side that is opposite the open end of the spinning rotor when the rotor box is closed. In the center of the cover 1 the fiber feed attachment 11 can be seen, on the side of the cover 1 the beginning of the fiber feed channel 12. A fiber air mixture is blown into the rotor in a known manner in rotor spinning machines via such a fiber feed channel.
  • the cover 1 has two bores 13 through which the cover 1 is fastened to a mounting plate in the usual way by means of screws. With its front side 14, the lid 1 closes off the spin box from the outside.
  • the cover 1 is designed as an aluminum die-cast part and polished on its front 14.
  • FIG. 2 shows the lid of Figure 1 in the rear view.
  • the lid 1 is essentially flat, so that the molded fiber feed channel 12 emerges from the surface of the lid 1.
  • the lid 1 has an approach 10 for the connection of compressed air, which is used in a known manner for cleaning the rotor.
  • one or more bores are arranged in the interior of the cover starting from the attachment 10, which emerge laterally from the fiber feed attachment and open towards the wall of the rotor.
  • In the center of cover 1 is one Bore 16 can be seen, through which the thread formed in the rotor is withdrawn from the spin box via the fiber feed attachment 11.
  • the cover is equipped with a thread draw-off nozzle (not shown) on the fiber feed attachment 11.
  • the bore 16 surrounds a thread take-off tube 20 as shown in FIG. 4.
  • the back of the cover 1 has a plurality of stops 110 with which the cover is supported on the mounting plate.
  • the stops 110 form a plane with which they rest on the plane of the mounting plate 30, as shown in FIG. 4.
  • the bore 16 for removing the thread from the rotor is widened in the direction of the rear 15 of the cover, which forms the centering bore 17 for centering the cover 1 on the mounting plate 30.
  • the centering bore 17 is countersunk in a centering projection 170, which is cast on the back 15 of the cover 1.
  • the approach 10 for connecting the compressed air for rotor cleaning has a flat sealing surface 101 with which, as shown in FIG. 4, it cooperates in a sealing manner with a connecting piece 102.
  • the edge 120, the ribs 130 and the surface of the centering projection 170 facing the viewer of FIG. 2 and the sealing surface 101 all form a plane. This is particularly advantageous for processing the cover, since all of these parts can be reworked in one operation, if necessary.
  • the stops 110 together likewise form a plane which is further away from the front of the cover 1 than the plane, which is characterized by the approach 10 for the connection of compressed air.
  • Figure 3 shows a cover 1 in section.
  • the fiber feed attachment 11 is arranged on the front side 14.
  • the fiber feed attachment 11 has a bore 16 for the withdrawal of the thread from the spinning rotor.
  • the fiber feed channel 12 cast on the cover 1, as shown in FIG. 2, is omitted for the sake of clarity.
  • the fiber feed attachment 11 merges into the centering attachment 170 on the rear side 15 of the cover 1.
  • the approach 10 for the connection of compressed air is also arranged on the back.
  • Approach 10 and centering approach 170 and the edge 120 lie in one plane, so that they can be processed in one work step.
  • stops 110 For the abutment of the cover on the mounting plate, it has stops 110, which are arranged as cylindrical sprue pieces on the rear side 15 of the cover 1.
  • the stops 110 form a plane 111 with which they abut the mounting plate.
  • the plane 111 is parallel to the plane which is formed by the sealing surface 101 of the extension 10 for the connection of compressed air. Both levels are at a distance from one another, so that, as shown in more detail in FIG. 4, there is space for a connecting piece 102 between the mounting plate and the rear of the cover at the attachment 10.
  • the centering projection 170 has a centering bore 17, with which the cover 1 can be fastened centered on the mounting plate with a centering bushing 31, see FIG. 6.
  • the centering bore 17 merges into a bore 21 with a smaller diameter, which contains the thread take-off tube 20, compare FIG. 4.
  • the stops 110 on the edge 120, as shown in FIG. 2, have been omitted in FIG. 3 for the sake of simplicity. But it is also possible that the cover 1 is only equipped with the stops 110, which are cylindrical.
  • the stops 110 need not necessarily be formed in one piece with the cover 1. It is just as possible to form the stops 110, for example, by washers between the cover and the mounting plate. It is particularly favorable that in the assembled state on the mounting plate, the cover 110 has a distance between the plane 111, which is then formed by the washer, and the plane, which is formed by the surface 101. Hatching of the plate 1 shown in section has been omitted in FIG. 3 for the sake of clarity.
  • FIG. 5 shows a mounting plate 30 designed according to the invention. It has 2 bores 32, by means of which the cover is screwed onto the mounting plate 30.
  • the centering sleeve 31 is arranged between the bores 32.
  • the connector 102 is positioned next to it.
  • the mounting plate 30 is in turn attached to the top of the rotor box by means of holes.
  • the holder 38 serves to fix the thread take-off tube.
  • FIG. 6 shows a section AA through the cover 30 from FIG. 5.
  • the centering bush 31 is, for example, welded or shrunk into a bore in the mounting plate 30.
  • the connector 102 also sits in a bore in the mounting plate 30 and is designed such that it at least prevents it from falling out is fixed when the cover 1 is removed. With the seal 33, it bears against the sealing surface 101 of the extension 10 of the cover 1 in the assembled state. The seal 33 is deformed so that a secure sealing takes place.
  • the connection piece 102 is connected to a compressed air line (not shown).
  • the centering bush 31 has a bore 35 through which, as shown in FIG. 4, a thread take-off tube 20 is inserted from the side of the mounting plate 30 facing away from the mounting side 34, which in turn extends into the bore 21 of the cover 1, see FIG. 3 and FIG. 4 .
  • FIG. 4 shows a partially shown mounting plate 30 on which a partially shown cover 1 rests.
  • the channel 4 for the passage of the compressed air for the rotor cleaning through the cover 1 is shown in the fiber feed attachment 11 and in the attachment 10.
  • the channel 4 opens into a nozzle 41.
  • the cover 1 abuts the mounting plate 30 with a stop 110.
  • the connecting piece 102 is arranged between the sealing surface 101 of the extension 10 and the mounting side 34 of the mounting plate 30. This extends through the mounting plate 30 on the back, on which a compressed air line 42 is connected to the connector 102.
  • the thread take-off tube 20 is inserted through the centering bushing 31 and its bore 35 from the rear side 36 of the mounting plate 30 and extends into the bore 21 of the cover 1.
  • the thread take-off tube 20 is pressed by an elastic holder 38 in the direction of the rotor lid (see FIGS. 4 and 5).
  • the holder 38 is, for example, in the form of a Leaf spring formed, which is pivotally screwed to the mounting plate 30. It is supported on a collar 22 of the thread take-off tube 20 and presses it in the direction of the cover 1 up to a stop 23 of the rotor cover 1 (see also FIG. 3).
  • the transition between the bore 21 and the bore 16 of the cover 1 forms the stop 23 for the thread draw-off tube 20.
  • a thread draw-off nozzle not shown in FIG. 4, is designed such that it extends beyond the bore 16 into the bore 21, then forms this the stop for the thread take-off tube 20.
  • the thread take-off tube 20 is not shown up to its stop 23.
  • the cover 1 can be detached from the mounting plate 30 without the thread take-off tube or the compressed air connection being disruptive. The compressed air connection remains via its connector 102 on the mounting plate, as does the thread take-off tube 20 through its receptacle (31, 35).
  • the configuration of the mounting plate 30 according to the invention also makes it possible to disassemble the thread take-off tube 20 from the mounting plate 30 and, for example, to replace it with a new one, without the cover 1 having to be removed from the mounting plate 30 for this purpose.
  • a simple element for example in the form of a plate spring, it is possible to hold the thread draw-off tube on the mounting plate 30.
  • This elastic holder 38 also ensures that the thread take-off tube is always pressed up to its stop in the cover 1. For the sake of clarity, hatching has been omitted for most of the cut surfaces of FIG.
  • the inventive design of the cover with a receptacle for the thread take-off tube particularly advantageously designed as a centering sleeve with a bore
  • the design of the cover according to the invention with a connecting piece for the compressed air supply of a rotor cover are in principle independent of one another.
  • a rotor lid with an air connection is to be installed, it is of course particularly advantageous to combine the two inventions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP92116072A 1991-09-23 1992-09-19 Deckel für eine Spinnbox einer Rotorspinnmaschine Expired - Lifetime EP0534335B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4131665 1991-09-23
DE4131665A DE4131665A1 (de) 1991-09-23 1991-09-23 Deckel fuer eine spinnbox einer rotorspinnmaschine

Publications (2)

Publication Number Publication Date
EP0534335A1 EP0534335A1 (de) 1993-03-31
EP0534335B1 true EP0534335B1 (de) 1996-01-10

Family

ID=6441296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116072A Expired - Lifetime EP0534335B1 (de) 1991-09-23 1992-09-19 Deckel für eine Spinnbox einer Rotorspinnmaschine

Country Status (6)

Country Link
US (1) US5280700A (enrdf_load_stackoverflow)
EP (1) EP0534335B1 (enrdf_load_stackoverflow)
CZ (1) CZ291592A3 (enrdf_load_stackoverflow)
DE (2) DE4131665A1 (enrdf_load_stackoverflow)
HK (1) HK198196A (enrdf_load_stackoverflow)
SK (1) SK291592A3 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235024C2 (de) * 1992-10-16 1996-07-25 Rieter Ingolstadt Spinnerei Fadenabzugsrohr
DE19717735B4 (de) * 1997-04-26 2005-10-13 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
DE19859164B4 (de) * 1998-12-21 2008-02-07 Oerlikon Textile Gmbh & Co. Kg Kanalplattenadapter für eine Offenend-Spinnvorrichtung
DE10237040B4 (de) * 2002-08-07 2011-08-11 Wilhelm Stahlecker GmbH, 73326 Vorrichtung zum Abdichten einer Öffnung eines Rotorgehäuses
DE102007039868B4 (de) * 2007-08-23 2020-11-05 Rieter Ingolstadt Gmbh Offenend-Spinnvorrichtung mit aufschwenkbarem Deckelelement und Anschlagbauteil dafür

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1286960A (en) * 1969-04-09 1972-08-31 Tmm Research Ltd Improvements relating to open-end spinning devices
GB1327328A (en) * 1970-10-08 1973-08-22 Daiwa Spinning Co Ltd Oepn end spinning machines
US4022011A (en) * 1974-02-13 1977-05-10 Hironori Hirai Yarn piecing method for open-end spinning machine
DE2419670C2 (de) * 1974-04-24 1983-09-22 Stahlecker, Fritz, 7347 Bad Überkingen Offenend-Spinnaggregat
DE2558758C2 (de) * 1975-12-24 1985-05-15 Teldix Gmbh, 6900 Heidelberg Offenend-Spinneinheit
GB1577953A (en) * 1976-05-18 1980-10-29 Platt Saco Lowell Ltd Open-end spinningmachines
DE2735311C2 (de) * 1977-08-05 1989-08-10 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vorrichtung zur Reinigung von Spinnrotoren in Offenend-Spinnvorrichtungen
CH624718A5 (enrdf_load_stackoverflow) * 1977-09-30 1981-08-14 Rieter Ag Maschf
DE2815295C2 (de) * 1978-01-31 1983-03-03 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vorrichtung zum Stillsetzen des durch einen Deckel abgedeckten Rotors einer Offen- End-Spinnvorrichtung
DE2811960C2 (de) * 1978-03-18 1984-05-17 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vorrichtung zum individuellen Anspinnen einzelner Spinnvorrichtung einer Offenend-Spinnmaschine
JPS5720611Y2 (enrdf_load_stackoverflow) * 1978-11-24 1982-05-04
IN166985B (enrdf_load_stackoverflow) * 1985-04-29 1990-08-18 Rieter Ag Maschf
DE3636182C2 (de) * 1986-10-24 1995-10-12 Schlafhorst & Co W Spinnaggregat einer OE-Rotorspinnmaschine
US4854119A (en) * 1987-02-19 1989-08-08 Fritz Stahlecker Arrangement for open-end rotor spinning
DE3726531C1 (de) * 1987-08-10 1988-12-08 Schubert & Salzer Maschinen Offenend-Spinnvorrichtung und Verfahren zum Anfahren einer solchen Vorrichtung

Also Published As

Publication number Publication date
US5280700A (en) 1994-01-25
DE4131665C2 (enrdf_load_stackoverflow) 1993-08-12
HK198196A (en) 1996-11-08
DE4131665A1 (de) 1993-03-25
SK291592A3 (en) 1995-02-08
CZ291592A3 (en) 1993-04-14
DE59204993D1 (de) 1996-02-22
EP0534335A1 (de) 1993-03-31

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