EP0747517A1 - Cylindre ouvreur pour un métier à filer à bout libéré - Google Patents

Cylindre ouvreur pour un métier à filer à bout libéré Download PDF

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Publication number
EP0747517A1
EP0747517A1 EP96105683A EP96105683A EP0747517A1 EP 0747517 A1 EP0747517 A1 EP 0747517A1 EP 96105683 A EP96105683 A EP 96105683A EP 96105683 A EP96105683 A EP 96105683A EP 0747517 A1 EP0747517 A1 EP 0747517A1
Authority
EP
European Patent Office
Prior art keywords
opening roller
clothing
base body
clothing holder
face
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.)
Granted
Application number
EP96105683A
Other languages
German (de)
English (en)
Other versions
EP0747517B1 (fr
Inventor
Edmund Schuller
Eva-Maria Greppmair
Claus Franz
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 GmbH
Original Assignee
Rieter Ingolstadt 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
Priority claimed from DE19549680A external-priority patent/DE19549680B4/de
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0747517A1 publication Critical patent/EP0747517A1/fr
Application granted granted Critical
Publication of EP0747517B1 publication Critical patent/EP0747517B1/fr
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
    • 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
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers

Definitions

  • the present invention relates to an opening roller for an open-end spinning device according to the preamble of patent claim 1.
  • Opening rollers are used in the case of open-end spinning devices for separating fibers to be spun, which are fed to the opening roller in the form of a sliver. This rotates at high speed and with its clothing, which can consist of teeth or needles, loosens individual fibers from the sliver, which are then fed to a spinning organ.
  • the set of an opening roller is in fact not suitable for all fiber materials, so that when a spinning machine is converted to a new starting material, the opening roller or its set must be replaced. Otherwise, the set is subject to wear, so that it is also necessary to replace the set for this reason.
  • an opening roller Various embodiments of an opening roller are known in the prior art, the fittings of which are interchangeable.
  • the opening roller is arranged on a shaft which is supported by a bearing, so that the opening roller is designed to be rotatable in this way, at least one part of the opening roller consisting of several parts being connected directly to the shaft. This is usually done using a press fit.
  • From DE-OS 25 28 485 it is known to form the opening roller in several parts for the purpose of interchangeability of the clothing, wherein it has a base body which is attached to a shaft via a press fit and the clothing via a The clothing holder is attached to the opening roller in such a way that a fixed assignment between the base body and the clothing holder is ensured. Loosening or turning the set is excluded.
  • Fasteners are provided for this purpose, for example in the form of screws, which reach through to the base body through an opening in the clothing holder.
  • These fastening means are arranged on the end face of the opening roller which is arranged on the side of the opening roller which faces away from the bearing.
  • This embodiment has the disadvantage that these end faces are given a rough surface by the fastening means. Fiber particles can adhere to it, which accumulate and dissolve again, creating defects in the yarn, and the shaft protrudes into the end face.
  • the design of the end face in the case of opening rollers which is as free of edges as possible is known, but the proposed solutions are unsatisfactory.
  • An embodiment is known from US Pat. No. 4,296,527 which dispenses entirely with fastening means.
  • the base body and the clothing holder are designed in such a way that they attach to one another, for example via a thread.
  • Another embodiment is also shown here, in which the clothing holder is screwed to the opening roller by means of a screw on the end face remote from the bearing.
  • the second embodiment is similar to that of DE-OS 25 28 485.
  • the first-mentioned embodiments have the disadvantage that their production is expensive, or the connection between the base body and the clothing holder is either not secure enough, or the connection is difficult to detach again.
  • Another opening roller is known from the patent specification CH 661 535 A5, the clothing holder of which is fastened without fastening means. To do this, it is shrunk onto the shaft like the basic body. This has the disadvantage that replacing the set is time-consuming.
  • the shaft on which the opening roller is mounted can be damaged by repeated pressing of a press fit.
  • the object of the present invention is therefore to design an opening roller for an open-end spinning unit in such a way that the clothing can be replaced easily and quickly, its structure and the fastening means are simple, and the opening roller is designed and fastening means are arranged in such a way that no disturbances yarn quality.
  • This object is achieved by the features of claim 1.
  • the invention is based on the knowledge that it is not enough to form the fastening means as free of edges as possible, but surprisingly also that it is important on which of the two end faces of the opening roller the fastening means are arranged.
  • this has the advantage of being easy to use and, at the same time, of ensuring a secure connection between the base body and the clothing holder, and the shaft is covered in a simple manner. It is particularly expedient if the base body is designed in such a way that it contains the end face facing the bearing, as a result of which it is easily possible to replace the clothing carrier, since this does not have to be passed over the bearing. This reduces the risk of the clothing being damaged during its replacement.
  • the bore of the hub of the base body can thereby be continuous, which facilitates its workability and the shaft is covered in a simple manner by the clothing holder.
  • the clothing holder can also be favorable for the clothing holder to contain the end face facing the bearing, in particular when the clothing holder works together with an annular clothing carrier. Then, for disassembly, the opening roller can be placed on its end face facing away from the bearing, then the clothing holder removed and then the ring-shaped clothing carrier removed. This simple handling significantly reduces the risk of damage to the clothing.
  • the base body then covers the shaft with its end face facing away from the bearing.
  • the basic body or clothing holder is particularly favorable if it contains an opening for a fastening means, the opening being, for example, a bore which extends parallel to the shaft on which the opening roller is mounted.
  • the fastening means for example a screw
  • the clothing holder has opening, through which the fastener is guided, which then ends in a thread of the base body.
  • the clothing holder has such a shape that it has a substantially cylindrical outer surface which corresponds approximately to the width of the clothing in the axial direction and this clothing is applied to the outer surface of the clothing holder.
  • this can be done, for example, by a toothed wire, or also, for example, by a firmly pressed-on clothing carrier, which has needles or teeth, for example.
  • this has a receptacle with which an annular clothing carrier is supported radially.
  • it has a stop which acts axially on a clothing carrier and thereby holds it on the base body. It is also possible that the clothing holder has both a receptacle and a stop.
  • the fastening means it is designed in the form of screws, it being particularly favorable if they are arranged at a substantially uniform distance from one another.
  • the opening roller is particularly advantageous to ensure that the mass distribution on the opening roller is uniform so that it does not run unbalanced.
  • a single fastening means is also conceivable if it is ensured that the opening roller is balanced.
  • three screws are used for the assignment of the base body and set holder. If countersunk screws are used, they have the advantage that, with a corresponding design of the end face through which they are guided, they interfere only very slightly with the flatness of the end face.
  • An embodiment of the opening roller is particularly favorable, in which the thread for the screws is arranged in the clothing holder, since this ensures that the opening roller receives a new thread when the clothing holder is replaced.
  • the clothing holder has an axial bore which is closed by means of a cover during the operation of the opening roller. This cover is placed in the clothing holder in such a way that this end face of the opening roller practically forms a completely smooth surface. If the clothing holder has this axial bore, it is achieved that if the clothing is to be coated during its manufacture, a plurality of clothing holders can be accommodated on a carrier through this axial bore, as a result of which coating can be carried out more easily and more cost-effectively.
  • an adjustment device is provided on the opening roller, which makes it easier during assembly to set up the openings through which the fastening means, for example the screws, are guided precisely on the associated threads, so that these do not have to be searched first.
  • a stop is provided which signals the correct position from the clothing holder to the base body. If the stop works together with a spiral edge on the base body, there is the advantage that the clothing holder can be placed on the base body and rotated until the stop fits into it. By turning further in the same direction of movement, the stop is brought into its end position, which then indicates the correct assignment.
  • a spiral edge has the advantage that when turning in the wrong direction there is no firm striking, but only stiffness and ultimately jamming. It is particularly expedient if at least the end face of the opening roller facing away from the bearing has a spiral groove, which is so is arranged that air is conveyed radially outward from the region of the axis of rotation of the end face by the rotation of the opening roller.
  • at least the clothing holder is designed as an extruded component. A pore-free surface can thereby be achieved, as a result of which the component can in particular be coated more cost-effectively.
  • the opening roller 1 of Figure 1 is mounted on a shaft 2 which is mounted in a bearing 3. On its side facing away from the opening roller 1, the shaft 2 carries a whorl 21, via which the opening roller is driven by means of a belt.
  • the opening roller 1 itself, which is shown in section in the lower half of the drawing, consists of a base body 11 and a clothing holder 12.
  • the clothing holder 12 is connected to the base body 11 via a fastening means 4, which is designed as a screw 41.
  • the base body 11 has a hub 111 which is pressed onto the shaft 2 via an interference fit.
  • the base body 11 has an opening 112 which has the shape of a bore through which the screw 41 is passed and extends into the clothing holder 12, where it cooperates with a thread 117.
  • the opening 112 extends parallel to the axis 22 of the shaft 2.
  • the clothing holder 12 is fastened from the side of the end face 14 of the opening roller 1 facing the bearing 3. This means that the surface of the end face 14 facing the bearing is interrupted because the fastening means 4 projects through its surface.
  • the screw 41 By designing the screw 41 as Countersunk screw, however, the disturbance of the flatness and smoothness of the surface of the end face 14 is kept as low as possible.
  • the opening 112 is countersunk in the area of the end face 14.
  • it is reinforced with ribs 114.
  • the base body 11 has air ducts 115.
  • the shaft 2 has an axially parallel bore 23 along its entire length, as a result of which the air duct 115 communicates with the outside air, that is to say the air outside an opening roller housing, via the bore 23.
  • This has the advantage that the sealing gap 9 is in communication with the outside air between the base body 11 and the sleeve 31 of the bearing 3. This allows air to flow through the bore 23 via the air duct 115 into the area in front of the end face 14 facing the bearing.
  • the base body 11 has receiving surfaces 116, via which the clothing holder 12 is centered on the base body 11.
  • the clothing holder 12 has a cylindrical outer surface 121 which has an axial length which corresponds to the width of the clothing 8 applied to the outer surface.
  • the clothing holder 12 is formed in one piece with the cylindrical lateral surface 121, which results in a particularly inexpensive and simple embodiment.
  • the cylindrical outer surface 121 has grooves 122 in which the foot of the clothing wire is fitted.
  • the end face 15 of the opening roller facing away from the bearing 3 1 is particularly advantageously completely formed here by the clothing holder 12.
  • the axial bore 123 makes sense to facilitate its handling during the manufacture of the clothing holder 12. Particularly when the clothing 8 is coated, the presence of the axial bore 123 means that a plurality of clothing holders 12 can be threaded onto a mandrel in order to be able to coat them together.
  • the base body 11 carries the end face 14 facing the bearing 3.
  • the base body it would also be possible to design the base body so that it would have the end face 15 facing away from the bearing 3. This would have the consequence that the clothing holder would have the end face 14 facing the bearing 3.
  • the clothing holder During its assembly or disassembly, the clothing holder would then have to be fed to the base body via the bearing 3. Then the base body would have that Threads for screwing in the screws and the clothing holder would have an opening for inserting the screws.
  • the embodiment shown in FIG. 1 has the advantage over this embodiment that a new thread 112 is inserted each time the clothing holder 12 is replaced. Since the opening roller is usually made of aluminum, which is known not to be as hard and can therefore wear threads accordingly, this is particularly advantageous.
  • the opening roller partially shown in FIG. 2 also contains a fastening means 4, with the aid of which the fastening is carried out from the end face 14 facing the bearing 3.
  • the opening roller of FIG. 2 has an annular clothing carrier 7 which is connected to the base body 11 of the opening roller 1 with the aid of the clothing holder 12 and the fastening means 4.
  • the clothing holder 12 has a receptacle 125 which guides the ring-shaped clothing carrier radially.
  • the clothing holder 12 has a stop 126 which axially guides the annular clothing carrier 7.
  • the clothing carrier 7 is provided with a clothing 8, which consists of an assembled clothing wire.
  • the clothing carrier 7 can also have a clothing which is made from solid material, i.e. is ground out of the clothing carrier 7, for example.
  • clothing carriers 7 which are provided with needles can of course also be used.
  • the clothing holder 12 has no axial bore (123, FIG. 1). To guide the air through the bore 23 of the shaft 2 in the region of the clothing holder 12, this has a guide groove, not shown, for the air, so that the air duct 115 of the base body 11 is connected to the outside air via the bore 23 of the shaft 2.
  • FIG. 3 shows a top view of the opening roller of FIG. 1, from the side facing away from the bearing 3, the clothing holder being shown in section in the area of the line AA, FIG. 1.
  • the adjustment device consists essentially of an adjustment stop 61, which is attached to the clothing holder 12 and an edge 62, which is formed on the base body 11.
  • the edge 62 is designed in the form of a spiral line which deviates slightly from a circular line with a center in the center of the opening roller.
  • the opening roller of FIG. 3 has three such spiral-shaped edges 62 and the clothing holder 12 correspondingly has three adjustment stops 61.
  • each spiral-shaped edge 62 At the beginning or end of each spiral-shaped edge 62, as a result of the changed distance of the edge 62 from the center, there is a shoulder 63 on which the adjustment stop 61 for adjusting the tool holder to the base body 11.
  • the spiral shape of the edge 62 has the advantage that when the clothing holder 12 is placed on the base body 11, the adjustment stop 61 usually lies in an area where the distance of the adjustment stop 61 from the center of the opening roller is smaller than the distance of the edge 62. This means that the clothing holder 12 does not snap onto the base body 11. Only by turning the clothing holder 12 to the right in relation to the base body 11 does the adjustment stop 61 come into an area where there is play between the adjustment stop 61 and the edge 62, so that the clothing holder sits on the base body 11.
  • Figure 4 shows a plan view of the end face 14 of the opening roller, which faces away from the bearing.
  • This version is the End face 14 is provided with a spiral groove 140, which serves to convey air radially outward from the region of the axis of rotation of the opening roller when the opening roller rotates.
  • the spiral groove 140 does not have to extend to the center of the end face 14. It is sufficient if, at least in the outer region of the end face 14, a curved groove 140 is arranged which is suitable for conveying air radially outwards in the direction of rotation (arrow P) used in the operation of the opening roller.
  • Such a shorter groove, not shown in FIG. 4 is particularly suitable for the front face of the opening roller facing the bearing.
  • the screw was specifically described as the fastening means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP19960105683 1995-06-07 1996-04-11 Cylindre ouvreur pour un métier à filer à bout libéré Expired - Lifetime EP0747517B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19549680A DE19549680B4 (de) 1995-06-07 1995-06-07 Auflösewalze für eine Offenend-Spinnvorrichtung
DE1995120345 DE19520345C2 (de) 1995-06-07 1995-06-07 Auflösewalze für eine Offenend-Spinnvorrichtung
DE19520345 1995-06-07
DE19549679A DE19549679B4 (de) 1995-06-07 1995-06-07 Auflösewalze für eine Offenend-Spinnvorrichtung

Publications (2)

Publication Number Publication Date
EP0747517A1 true EP0747517A1 (fr) 1996-12-11
EP0747517B1 EP0747517B1 (fr) 1999-07-14

Family

ID=28045861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960105683 Expired - Lifetime EP0747517B1 (fr) 1995-06-07 1996-04-11 Cylindre ouvreur pour un métier à filer à bout libéré

Country Status (2)

Country Link
EP (1) EP0747517B1 (fr)
DE (1) DE19520345C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1344853A1 (fr) * 2002-03-15 2003-09-17 Rieter Ingolstadt Spinnereimaschinenbau AG Rouleau ouvreur pour un dispositif de filature OE
DE102005034993A1 (de) * 2005-07-27 2007-02-01 Saurer Gmbh & Co. Kg Antriebswalze für eine Spulen herstellende Textilmaschine
US8210766B2 (en) * 2007-08-07 2012-07-03 Rieter Ingolstadt Gmbh Opening cylinder with clip connection
DE10236992B4 (de) * 2002-03-15 2012-10-04 Rieter Ingolstadt Gmbh Auflösewalze für eine OE-Spinnvorrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19653359B4 (de) * 1996-12-20 2010-01-14 Rieter Ingolstadt Gmbh Auflösewalze für eine Offenend-Spinnvorrichtung
DE10260507A1 (de) * 2002-12-21 2004-07-01 Rieter Ingolstadt Spinnereimaschinenbau Ag Auflösewalze mit einer axialen Demontageöffnung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2382525A1 (fr) * 1977-03-01 1978-09-29 Burckhardt Christoph Co Cylindre ouvreur pour metier a filer
FR2410064A1 (fr) * 1977-11-25 1979-06-22 Reiners & Fuerst Cylindre ouvreur a garniture pour metier a filer a fibres liberees
FR2630754A1 (fr) * 1988-04-29 1989-11-03 Stahlecker Gmbh Wilhelm Cylindre pour un dispositif de filage a fibre liberee

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849844A (en) * 1956-11-26 1958-09-02 Jr Edwin Allen Snape Card clothing grinding head
DE2528485B2 (de) * 1975-06-26 1978-10-12 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Auflösewalze für eine Offenendspinnvorrichtung
GB1596531A (en) * 1978-05-26 1981-08-26 Eadie Bros & Co Ltd Textile opening rollers
DE8909448U1 (de) * 1989-08-08 1989-10-19 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Auflösewalze für eine OE-Spinnvorrichtung
DE4039634A1 (de) * 1990-12-12 1992-06-17 Fritz Stahlecker Aufloesewalze fuer eine oe-spinnvorrichtung und verfahren zu ihrer herstellung
DE4341411C2 (de) * 1993-12-04 1995-09-07 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum pneumatischen Zuführen von Fasern zu der Fasersammelfläche eines Offenend-Spinnelementes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2382525A1 (fr) * 1977-03-01 1978-09-29 Burckhardt Christoph Co Cylindre ouvreur pour metier a filer
FR2410064A1 (fr) * 1977-11-25 1979-06-22 Reiners & Fuerst Cylindre ouvreur a garniture pour metier a filer a fibres liberees
FR2630754A1 (fr) * 1988-04-29 1989-11-03 Stahlecker Gmbh Wilhelm Cylindre pour un dispositif de filage a fibre liberee

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1344853A1 (fr) * 2002-03-15 2003-09-17 Rieter Ingolstadt Spinnereimaschinenbau AG Rouleau ouvreur pour un dispositif de filature OE
DE10236992B4 (de) * 2002-03-15 2012-10-04 Rieter Ingolstadt Gmbh Auflösewalze für eine OE-Spinnvorrichtung
DE102005034993A1 (de) * 2005-07-27 2007-02-01 Saurer Gmbh & Co. Kg Antriebswalze für eine Spulen herstellende Textilmaschine
DE102005034993B4 (de) * 2005-07-27 2016-05-25 Saurer Germany Gmbh & Co. Kg Antriebswalze für eine Spulen herstellende Textilmaschine
US8210766B2 (en) * 2007-08-07 2012-07-03 Rieter Ingolstadt Gmbh Opening cylinder with clip connection
US8490376B2 (en) 2007-08-07 2013-07-23 Rieter Ingolstadt Gmbh Opening cylinder with clip connection

Also Published As

Publication number Publication date
EP0747517B1 (fr) 1999-07-14
DE19520345C2 (de) 2003-10-09
DE19520345A1 (de) 1996-12-12

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