EP0099490B1 - Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors - Google Patents

Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors Download PDF

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Publication number
EP0099490B1
EP0099490B1 EP83106272A EP83106272A EP0099490B1 EP 0099490 B1 EP0099490 B1 EP 0099490B1 EP 83106272 A EP83106272 A EP 83106272A EP 83106272 A EP83106272 A EP 83106272A EP 0099490 B1 EP0099490 B1 EP 0099490B1
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EP
European Patent Office
Prior art keywords
spinning rotor
collecting groove
pot
open
dished member
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
Application number
EP83106272A
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German (de)
English (en)
French (fr)
Other versions
EP0099490A1 (de
Inventor
Simon Dipl.-Ing. Escher
Eberhard Hofmann
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
Schubert und Salzer Maschinenfabrik 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 Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Publication of EP0099490A1 publication Critical patent/EP0099490A1/de
Application granted granted Critical
Publication of EP0099490B1 publication Critical patent/EP0099490B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • 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
    • D01H4/10—Rotors

Definitions

  • the present invention relates to a non-cutting open-end spinning rotor with a collecting groove and a method for producing such an open-end spinning rotor.
  • open-end spinning rotors by non-cutting shaping (DE-OS 2 504 401), a metal sheet serving as the starting material, which is first brought into the shape of a pot by punching and deep-drawing. The pot is then compressed using complementary shaped or pressure rollers and pressed into the final rotor shape. The spinning rollers extend over the entire inside and outside length of the open-end spinning rotor. It has been shown that in this way it is not possible to produce spinning rotors that are useful for spinning and that the molding tool for the collecting groove also has a short service life.
  • the object of the invention is therefore to provide a spinning rotor produced without cutting which can be used for open-end spinning and a method for producing such an open-end spinning rotor.
  • Another object is to create an advantageous method for balancing such thin-walled spinning rotors.
  • this object is achieved in that the spinning rotor in the area of the collecting groove has a surface similar to the surface of an orange, as it arises during plastic deformation without contact with molding tools.
  • very narrow collecting groove shapes can also be produced, which otherwise could not be formed at all with the help of conventional molding tools.
  • a surface of the collecting groove that remains unchanged during further processing also has good properties with respect to the yarn produced. Machining grooves that have a detrimental effect on the yarn are effectively avoided in the area of the collecting groove.
  • a collecting groove is preferably folded by a corresponding choice of shape of the shaping tools in such a way that it has a cross section which increases from the bottom of the collecting groove to the rotor center in such a way that tangents which are placed in points of the collecting groove lying opposite one another on the boundary walls of the collecting groove increasing distance from the bottom of the collecting groove enclose an increasingly larger angle between them. Due to the narrow cross-section in the area of the bottom of the collecting groove, good compression of the fibers in the collecting groove is achieved. The ever increasing cross-sectional expansion causes a low-friction thread take-off and facilitates the propagation of rotation from the thread take-off tube into the collecting groove, i.e. H. to the fiber ring located there.
  • the centrifugal forces that occur at today's high rotor speeds can, under certain circumstances, cause the spinning rotor to deform.
  • it can be provided that it is reinforced, which is preferably designed as a flange provided on the outer circumference of the open edge of the spinning rotor.
  • Such flanging is claimed in divisional application EPA0 154 358.
  • the bursting speed of the spinning rotor is increased by the reinforcement, so that the rotor is suitable for higher speeds.
  • the pot which is prefabricated by stretching, is fixed in its radial position independently of shaping tools for the second plastic deformation, whereupon the peripheral wall of the pot in the region between the later collecting groove and the open edge of the pot by any one Type of plastic deformation and the area of the later collecting groove is compressed by plastic deformation towards the inside.
  • the spinning rotors can be adapted to the respective spinning requirements even better than before fit. This is also reflected in a lower number of thread breaks and an improvement in the spinning results in terms of piecing friendliness and yarn values.
  • the surface of the collecting groove or the entire interior of the spinning rotor can be made more wear-resistant by a coating or can be adapted to the material to be spun.
  • both the collecting groove and the sliding wall of the spinning rotor are advantageously subjected to plastic deformation against air educated.
  • the sliding wall of the open-end spinning rotor is formed by multi-stage pressing of the pot or by pressing with the aid of form rollers.
  • other methods e.g. B. pull-in method, prove to be advantageous.
  • the pressure acting radially inwards is preferably always exerted only on a limited area of the pot which is displaced in the axial direction during the pressing. This shift in pressure pushes the material together in the area of the stroke end. This results in a particularly good folding and material compression in the area of the collecting groove with a correspondingly high wear resistance.
  • the pressure can be shifted in various ways, for example by the pressure shifting in an oscillating manner.
  • the pressure shift in one or more waves always takes place from the open edge of the pot towards the collecting groove.
  • Open-end spinning rotors can be made from various materials, e.g. B. from aluminum, steel, spring steel, stainless steel or non-ferrous metal sheets, but also from a plastic plate. These different materials can be processed and processed differently and therefore require different treatment. For example, it is known that heat has to be applied to the plastic deformation of a plastic plate. In order to enable adaptation to the material used in the case of cold-formable materials (e.g. metal sheets), it is provided in an expedient embodiment of the method according to the invention that the number of pressure displacements and / or the pressure exerted here is adapted to that for the open end - Spinning rotor selected material is varied.
  • the corresponding intensity of the plastic deformation allows the spinning rotor to have a wall thickness in the area of its collecting groove which is greater than the wall thickness of the sliding wall adjoining this area. As a result, a high burst speed is achieved, so that the spinning rotor is suitable for high speeds.
  • the pot When rolling, the pot is also lengthened and its open edge deformed. According to a further feature of the invention, the spinning rotor is therefore advantageously brought to the desired length after the upsetting by cutting off the excess material at the open edge.
  • the pot can be secured in the case of plastic deformation causing compression, by means of a stationary support and a counter support connected to the pressure rollers in the area outside the collecting groove, this securing being able to be carried out with the aid of rotating or stationary elements.
  • it is useful if the pot is secured by clamping during the plastic deformation.
  • the later spinning rotor has a hole in its base, as a result of which its attachment to a shaft, bearing pin, base body, etc. is considerably simplified. This hole is advantageously punched out of the ground during the formation of the pot.
  • any imbalance in the spinning rotor adversely affects its drive and its service life, balancing the spinning rotor is unavoidable. In the prior art, this is always done by grinding the spinning rotor on its outer circumference. But this makes it the case of a chip-free open-end spinnro Tor weakened relatively thin wall, which is to be avoided for reasons of strength, especially with regard to the high rotor speeds common today.
  • a hole with a smaller diameter is punched out of the bottom of the pot for clamping during the pressing process than is later required for fastening the finished spinning rotor to its holder (e.g.
  • This balancing process can be used with any type of spinning rotor that is produced by plastic deformation.
  • the invention provides that the starting material is already coated and the pot is only then formed from the surface material coated in this way. In this way, the surface structure of the coated starting material in the area of the collecting groove remains essentially untouched during the manufacturing process, so that good spinning results are also achieved here.
  • This method is also advantageous for other open-end spinning rotors manufactured by plastic deformation.
  • Chipless shaped spinning rotors are extremely economical to produce and are therefore usually manufactured as so-called disposable parts. Nevertheless, it can be advantageous if spinning rotors formed without cutting also have a greater stability and this is kept uniformly at a certain level for a long time, as far as their behavior towards fibers is concerned.
  • the starting material - or in addition to this measure at least the inner surfaces of the finished molded spinning rotor are expediently subjected to a heat and / or chemical treatment. With the help of such a treatment, the structural structure of the material is changed - whereby the hardness is increased and tensions in the material are reduced - without, however, changing the surface quality of the spinning rotor. As a result, the good spinning results remain unaffected.
  • the finished spinning rotor is chemically and / or electrochemically deburred and polished.
  • the method according to the invention enables the non-cutting production of open-end spinning rotors, which on the one hand have a low weight, but on the other hand are nevertheless resistant to wear and tear and enable high speeds and which also give good yarn values.
  • These open-end spinning rotors can be manufactured both as disposable parts with an increased wear resistance achieved only through the plastic deformation and as parts with a further increased wear resistance due to a final heat and / or chemical treatment.
  • a surface material made of metal or plastic is used as the starting material for the manufacture of the open-end spinning rotor 1, which has a sufficiently high bursting speed to withstand a possible deformation at the high rotor speeds common today.
  • the material should have good spinning properties.
  • various factors play a role here, for example low tendencies towards contamination and electrostatic charging, good sliding properties with respect to fibers etc.
  • plastics can also be used as a starting material if they have the properties mentioned above and are suitable for non-cutting deformation.
  • PS plastics Polystyrenes
  • ABS plastics acrylonitrile putatin styrenes
  • CAB plastics cellulose acetates
  • a cut-pull-cut tool 4 is provided, in which the sheet 2 is inserted.
  • the known cut-pull-cut tool 4 has as essential tool parts a cutting plate 40, on which the sheet 2 to be cut is placed.
  • the cutting plate 40 has a cylindrical recess for receiving a cutting punch 42.
  • the tool 4 has a scraper 41, in which the cutting punch 42 is guided, which at the same time fulfills the function of a drawing ring.
  • the cutting punch 42 is formed in its working area in the form of a hollow cylinder which has a sharp, annular separating edge 420 on its outer circumference, which cooperates with a likewise annular, sharp separating edge 400 of the cutting plate 40, which separating edge 400 delimits the recess for receiving the cutting punch 42.
  • a hold-down device 43 is further arranged, which limits the stroke of the cutting punch 42.
  • the hold-down device 43 like the cutting punch 42, is designed in the form of a hollow cylinder, but for reasons which will be explained later, its inside diameter is smaller than that of the cutting punch 42.
  • An ejector 44 is mounted in the hollow cylindrical part of the die 42; against which a drawing punch 45 located in the hollow cylindrical part of the holding-down device 43 can be moved. Both the peripheral edge 421 of the cutting die 42 facing the drawing die 45 and the peripheral edge 450 of the drawing die 45 facing the cutting die 42 are of rounded shape.
  • the mutually facing surfaces 440 and 454 of the ejector 44 and the drawing die 45 have a shape which corresponds to the shape of the later spinning rotor 1.
  • the drawing punch 45 like the cutting punch 42, the hold-down device 43 and the ejector 44, is designed as a hollow cylinder and has a sharp separating edge 451 on its inner circumference at its end facing the ejector 44.
  • a punch 46 is guided, which is solid and has a separating edge 460 which cooperates with the separating edge 451.
  • the cutting plate 40 and the stripper 41 are now removed from one another.
  • the ejector 44 pushes the pot 3 out of the die 42 so that it can be removed from the tool 4.
  • the excess open edge of the pot 3 which arises during the plastic deformation of the surface material (for example sheet metal 2) can optionally be cut to the desired axial length in connection with this operation when this deformation is complete.
  • the sheet 2 is then pushed into the new position required for this to form a new pot 3.
  • another drawing device or also extrusion device can be used for the plastic deformation of the surface material causing the material to stretch.
  • the pot 3 does not necessarily have to be made from sheet material. Depending on the material, it is also possible to produce the pot using the cold extrusion or hot press method.
  • the pot 3 is processed further in a roll pressing device 5, after the plastic deformation causing an expansion of the material.
  • This roll pressing device 5 has a support 50 which has a receiving part 51 adapted to the shape of the bottom 31 of the pot 3.
  • Threaded bore 52 is provided for a screw 53, which - when it is passed through the hole 30, which was created by punching the sheet-metal disk 22 out of the bottom 31 of the pot - clamped together with a disk 54 the pot 3 on the support 50 and thus axially (as well as radially) fixed.
  • the roll pressing device 5 also has cooperating form rolls in the form of a press roll 7 and a form chuck 6.
  • the spinning or shaped chuck 6 essentially has the shape of a truncated cone, the inclination of which corresponds to the desired inclination of the sliding wall 10 of the finished spinning rotor 1.
  • the shaped chuck 6 is so dimensioned or is arranged in the pot 3 during the roll pressing work that it can never come into contact with the later collecting groove 11 during the entire roll pressing process.
  • the pressure roller 7 can be moved with respect to the pot 3 both in the axial direction (double arrow 70) and in the radial direction (double arrow 71) and is rotatably mounted on an axis 72.
  • the roll pressing device 5 also has a cutting device 8, which can be moved in the direction of the double arrow 80 radially to the pot 3 or to the finished spinning rotor 1.
  • the spinning rotor 1 is first attached to the support 50 with the aid of the disk 54 and the screw 53, independently of the pressure roller 7 and the shaped chuck 6, and clamped in this way. Now the shaped chuck 6 is moved into the interior of the pot 3. This assumes such a position that the entire length range of the later sliding wall 10 of the spinning rotor 1 to be formed is supported. This means that the shaped chuck 6 initially has a certain radial distance from the inner wall of the pot 3 so that this wall can be pressed radially inward against the shaped chuck 6. As a result, the shaped chuck 6 never comes into contact with the region of the collecting groove 11 of the later open-end spinning rotor 1.
  • the pressure roller 7 is pressed in the immediate vicinity of the collecting groove 11 to be formed - on the side of the pot 3 facing away from the bottom 31 - against the outer wall of the pot 3.
  • the support 50 is driven in the direction of the arrow 55, while the pressure roller 7 and the shaped chuck 6 are driven actively or passively (via the pot 3) in the direction of the arrows 73 and 61. Due to the one-sided pressure action on the wall of the pot 3 with respect to the later collecting groove 11, this wall is pressed radially inward only on this side of the collecting groove 11.
  • the other side of the collecting groove 11 is formed by the essentially radial surface of the bottom 31.
  • This base 31 is additionally supported by the support formed by the receiving part 51 and is therefore resistant to radial or axial deformation.
  • the collecting groove 11 of the open-end spinning rotor 1 is thus created by folding or pressing against air. In this plastic shaping which causes compression of the material, the collecting groove 11 is thus not touched by the molded chuck 6.
  • the end 32 of the pot wall facing the collecting groove 11 reaches the molded chuck 6.
  • the cutting device 8 is moved radially towards the spinning rotor 1 and the excess open edge 13 is separated from the spinning rotor 1. This completes the spinning rotor 1.
  • This spinning rotor 1 is already fully operational for many purposes and, apart from a possible deburring of the open edge, requires no further processing.
  • the spinning rotor 1 thus has a surface in the region of the collecting groove 11 which remains unaffected by the shaping rollers (spinning roller 7 and shaping chuck 6). This leads to good spinning results and also enables very narrow collecting groove cross sections.
  • the collecting groove 11 is first created by pressing.
  • the pressure roller 7 - which in the exemplary embodiment described extends only over a limited length range of the pot 3 and thus only over this limited length range can exert a pressure on the pot 3 - in their then required lifting movement only in their direction of movement to the folded area, d. H. the later collecting groove 11, exerts pressure on the wall of the pot 3. The lifting movement of the pressure roller 7 away from the area of the collecting groove 11 takes place here without exerting pressure on the wall of the pot 3.
  • the shape of the collecting groove 11 can be influenced by appropriate shaping of the receiving part 51 and by an adapted pressing process.
  • FIG. 3 shows an exemplary embodiment of a collecting groove 11 produced in this way.
  • the adjoining bottom 31 of the open-end spinning rotor 1 has the wall thickness a, which it obtained in the tool 4 during deep drawing, while the sliding wall 10, on the other hand, reduced it somewhat due to the roll pressing Has wall thickness b.
  • This has no adverse effects on the service life of the spinning rotor 1, since the material in this area (the sliding wall 10) has been compressed during roll pressing and therefore has increased wear resistance.
  • the spinning rotor 1 therefore has a wall thickness c here which is greater than the wall thickness b of the sliding wall 10 adjoining this area and also greater than the wall thickness a in the area of the base 31.
  • the increase in the wall thickness c depends on the intensity of the roll pressing process, as will be discussed in more detail later.
  • the method described can be used for a large number of collecting groove shapes, the drawing or pressing tools and shaping rollers and their movement having to be designed accordingly.
  • the method described is particularly well suited for collecting grooves 11 which are separated from the sliding wall 10 by a change in the conicity of the inner wall of the rotor.
  • Figure 3 shows the area of a particularly preferred form of the collecting groove 11.
  • This has a cross section such that tangents 93 and 94 or 95 and 96 or 97 and 98, which - in the plane defined by the rotor axis - to the boundary walls of the collecting groove 11 are placed, with increasing distance from the base 15 of the collecting groove 11 an increasingly larger angle ⁇ 1 , eL2 or a 3 between them.
  • ⁇ 1 , eL2 or a 3 it is sufficient if only one boundary wall is angled or convex, while the other boundary wall can, under certain circumstances, also be rectilinear, viewed in cross section.
  • Such a collecting groove 11 on the one hand enables good compression of the fibers in the fiber ring, but on the other hand also facilitates low-friction thread withdrawal from the collecting groove 11 due to the progressively widening cross section. This achieves good piecing friendliness with good yarn results.
  • various materials are suitable as the starting material for the production of the spinning rotor 1, and in addition to the metal sheets mentioned made of aluminum, steel, spring steel or non-ferrous metals, plates made of various plastics or other materials may also prove to be suitable.
  • their properties with regard to non-cutting deformation and with respect to the fiber material as well as their wear and deformation resistance are decisive. Deep-drawing, drawing, drawing-in and pressing processes are suitable for plastic deformation.
  • open-end spinning rotors 1 Since, according to the described method, the manufacture of open-end spinning rotors 1 is extremely inexpensive, they can be manufactured as so-called disposable parts without further processing. However, it is entirely possible to provide a surface coating or coating, as is often also desired in the case of open-end spinning rotors which have been produced by machining.
  • the starting or surface material e.g. sheet metal 2
  • the starting or surface material can also be used be provided with an appropriate coating.
  • this coating is applied to the material, if possible, before this surface material has been subjected to non-cutting deformation.
  • a cold-rolled steel sheet can be given a zinc coating by anodizing. After the coating, this sheet known as “Zincorblech” is then brought into the shape of the spinning rotor 1 in the manner described above by punching, plastic deformation and roll pressing.
  • the surface in the region of the later collecting groove 11 is not subjected to any mechanical processing which could influence the surface structure.
  • the spinning rotor 1 therefore has an essentially unchanged surface in the region of its collecting groove 11 with respect to the unshaped surface material.
  • this can be pressed into the shape of the spinning rotor 1 in different ways. It is therefore expedient if the number of pressure displacements - which corresponds to the number of working strokes of the pressure roller 7 - and / or the pressure exerted on the material of the pot 3 is varied in adaptation to the material selected for the open-end spinning rotor 1. This also affects the shape of the collecting groove 11. In addition, certain materials - e.g. B. plastics - the supply of heat so that deep drawing and roll pressing is possible in the first place.
  • a heat and / or chemical and / or electrochemical treatment of the inner surfaces is also required instead of or in addition to a coating of the starting material of the finished spinning rotor 1 possible.
  • All known processes hardening, annealing to relieve stress in the material, nitriding etc. can be used for this, since these processes increase the wear resistance not by mechanical action on the surface, but by diffusing.
  • the pressing process begins in the vicinity of the later collecting groove 11. Rather, it is entirely possible that the spinning roller 7 begins its spinning work in the area of the open edge 12 and extends its working strokes ever further towards the area of the later collecting groove 11, the strokes following the inclination of the shaped chuck 6 - of course also in that Case in which the roll pressing begins in the vicinity of the later collecting groove 11. So that at a roll pressing beginning at the open edge 12, the shaped chuck 6 is always in the work area, it is necessary that this is adjusted in accordance with the progress of work in the axial direction to ensure that the roll pressing is always carried out in a controlled manner.
  • a pressure roller 7 which extends over the entire area to be pressed - i. H. extends from the open edge 12 to near the area to be folded.
  • the pressure roller 7 can only be adjusted in the radial direction, while the shaped chuck 6 must be adjusted in the axial direction according to the progress of work.
  • the pot is not moved axially during the roll pressing process, while the shaping rollers (shaping chuck 6 and spinning roller 7) are moved in the axial direction.
  • the position of the cutting devices 8 and 81 can also be adjusted in the axial direction.
  • Open-end spinning rotors 1 are usually fastened to a shaft (DE-OS 2504401) or base body (DE-PS 2939325, FIG. 2) with the aid of screws or other axially arranged fastening means.
  • the manner in which the hole 30 required for this was punched out of the bottom 31 of the pot 3 during the plastic deformation has been explained above.
  • performing these steps in a single operation is particularly time-saving and therefore particularly advantageous.
  • the hole 30 not only serves for the later attachment of the spinning rotor 1 to its shaft or base body, but also enables the clamping and thus the holding and securing of the pot 3 in the roll pressing device 5 for the duration of the roll pressing in a particularly simple manner.
  • the spinning rotor 1 is balanced after its shaping by shifting its axis of rotation into its axis of inertia.
  • the hole 30 is first punched out smaller from the bottom 31 of the pot 3 than is later required for the mounting of the spinning rotor 1 on its axis etc.
  • the hole 30 is then enlarged to the desired diameter only when the balancing described.
  • the finished open-end spinning rotor 1 has a hole 30 in the bottom 31 (DE-PS 2 939 325, Figure 1, or DE-OS 2 939 326, Figures 1 and 3).
  • an axially adjustable central sleeve (not shown) can be provided independently of the shaped chuck 6 and the pressing roller 7, which axially plunges into the interior of the pot 3 and for contacting the bottom 31 thereof is brought and thus presses the pot 3 firmly against the receiving part 51.
  • the molded chuck 6 can then also be mounted on this sleeve.
  • the open-end spinning rotor 1 also offers sufficient resistance to deformation at higher speeds. Due to the folded area around the collecting groove 11, the spinning rotor 1 is reinforced in the area of its largest diameter. In order to also make the open edge 12 immune to higher speeds, according to FIG. 2 (right side) it has a reinforcement formed as a flange 14 on the outer circumference of the open edge 12 of the spinning rotor 1. As shown in FIG. 2, this flanging of the open takes place Edge 12 by exerting pressure on the open edge from changing directions (see arrows 9, 90, 91 and 92).
  • this flanging can also be preceded by a cutting process using a radially movable cutting device 81 (see double arrow 82) in order to achieve a defined flanging 14.
  • a radially movable cutting device 81 see double arrow 82
  • Other reinforcements of the open edge 12 of the spinning rotor e.g. B. by flipping and rolling inwards instead of outwards or by putting on a ring, are quite possible.
  • a multi-stage pressing of the pot 3 against air is described below with reference to FIG. 4, the entire inner surface of the later open-end spinning rotor 1 having a surface that is not touched by molding tools.
  • the matrices 57 with the inserted pots 3 are located on a base plate 56.
  • the matrice 57 has a centering pin 58 and a centering shoulder 59 for centering the pot during pressing.
  • the centering pin 58 extends through a hole 30 arranged centrally in the bottom 31 of the pot into the interior of the pot 3, while the centering shoulder 59 encompasses the outer circumference of the pot 3.
  • a support plate 74 which carries a plurality of shaped rings 75, 76 and 77.
  • Each form ring 75, 76 and 77 is assigned to a different working position I, II and 111, into which the matrices 57 can be brought one after the other in a suitable manner.
  • the shaped rings 75, 76 and 77 are designed differently in such a way that they can plastically form the pot 3 into an open-end spinning rotor 1 by pressing in three stages or steps.
  • the pot 3 (which causes a stretching) is inserted into the die 57 in the working position I, the pot 3 being precisely fixed in its radial position with the aid of the centering pin 58 and the centering shoulder 59.
  • a first stroke movement which is limited by stop columns 78 and 79 attached to the support plate 74, the upper end 32 of the pot 3 is pressed somewhat radially inwards.
  • the support plate 74 lifts again, the molding ring 75 releasing the pot 3 again.
  • a stripper (not shown) can be assigned to the shaped ring 75 for this purpose.
  • a suitable manner e.g. B.
  • the die 57 is now brought into the working position II with the pot 3, while a new die 57 is brought into the working position I with a new pot 3. Both pots will now exposed to a second stroke.
  • the top 3 located there is again prepared for work in working position II, while the pretreated pot in the working position II is further plastically deformed by the molding ring 76.
  • the matrices 57 with the pots are again brought into the next working position II or III by a feed movement, while a new die 57 is brought into the working position I with a new pot 3.
  • the pots 3 located in the working positions I and II are plastically deformed in the manner already described, while in the working position 111 the pretreated pot receives the final rotor shape.
  • the finished spinning rotor 1 is removed from the die located in working position III and can now be used to separate the excess edge, to reinforce the edge, for balancing etc. - as described in conjunction with the spinning rotor 1 produced by roll pressing - the other Processing can be fed.
  • the air is pressed.
  • a triple follow-up tool is provided for this, but the number of working strokes for the plastic deformation of the pot 3 to form the spinning rotor 1 does not play a decisive role.
  • the inner surface of the pot 3 is not exposed to any molding tool, so that the surface created by the plastic shaping causing expansion during the formation of the pot 3 does not give rise to this second plastic shaping which causes compression gets destroyed.
  • the shape of the collecting groove 11 is determined here by the shape of the die 57, in particular its centering shoulder 59, and the form rings, in particular the last form ring 77, and by the axial limitation of the pressing movement predetermined with the aid of the stop columns 78 and 79.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP83106272A 1982-07-22 1983-06-28 Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors Expired EP0099490B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3227479A DE3227479C2 (de) 1982-07-22 1982-07-22 Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors
DE3227479 1982-07-22

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP85103633.5 Division-Into 1983-06-28
EP85103633A Division EP0154358A3 (de) 1982-07-22 1983-06-28 Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors

Publications (2)

Publication Number Publication Date
EP0099490A1 EP0099490A1 (de) 1984-02-01
EP0099490B1 true EP0099490B1 (de) 1986-10-01

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP83106272A Expired EP0099490B1 (de) 1982-07-22 1983-06-28 Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors
EP85103633A Withdrawn EP0154358A3 (de) 1982-07-22 1983-06-28 Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP85103633A Withdrawn EP0154358A3 (de) 1982-07-22 1983-06-28 Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors

Country Status (10)

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US (2) US4777813A (OSRAM)
EP (2) EP0099490B1 (OSRAM)
JP (1) JPS5971418A (OSRAM)
BR (1) BR8303918A (OSRAM)
CS (1) CS539283A3 (OSRAM)
DE (2) DE3227479C2 (OSRAM)
GB (2) GB2127441B (OSRAM)
HK (2) HK7987A (OSRAM)
IN (1) IN160694B (OSRAM)
MY (1) MY8700325A (OSRAM)

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US6321522B1 (en) 1999-03-09 2001-11-27 W. Schalfhorst Ag & Co. Spinning rotor for open-end spinning machine and method for producing the spinning rotor

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US5842337A (en) * 1995-09-29 1998-12-01 Kyocera Corporation Rotor for open-end spinning machine
DE19737332A1 (de) * 1997-08-27 1999-03-11 Stahlecker Fritz Rotorteller für OE-Spinnaggregate
KR100808347B1 (ko) * 2003-11-17 2008-02-27 가부시키가이샤 인테리젠토 웨이브 부정조작 판정시스템 및 부정조작 판정방법
US8561283B1 (en) * 2007-10-29 2013-10-22 Prestolite Performance, Llc Method to provide a universal bellhousing between an engine and transmission of a vehicle
DE102008026992A1 (de) * 2008-06-05 2009-12-10 Wilo Ag Verfahren zum Herstellen eines einstückigen Spalttopfes
US20120186936A1 (en) 2011-01-26 2012-07-26 Prestolite Performance Llc. Clutch assembly cover, method of making same, and optional heat management
US9482308B2 (en) 2011-01-26 2016-11-01 Accel Performance Group Llc Automotive flywheel with fins to increase airflow through clutch, method of making same, and heat management method
DE102015007819A1 (de) 2015-06-18 2016-12-22 Saurer Germany Gmbh & Co. Kg Spinnrotor für eine mit hohen Rotordrehzahlen arbeitende Offenend-Spinnvorrichtung
US10502306B1 (en) 2016-04-25 2019-12-10 Accel Performance Group Llc Bellhousing alignment device and method
CN113732151A (zh) * 2021-09-13 2021-12-03 常熟致圆微管技术有限公司 一种热旋压刀具的可控温系统

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US6195976B1 (en) 1999-03-09 2001-03-06 W. Schlafhorst Ag & Co. Spinning rotor for open-end spinning machines
US6321522B1 (en) 1999-03-09 2001-11-27 W. Schalfhorst Ag & Co. Spinning rotor for open-end spinning machine and method for producing the spinning rotor
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Also Published As

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GB8319771D0 (en) 1983-08-24
US4848080A (en) 1989-07-18
CS275679B6 (en) 1992-03-18
DE3366579D1 (en) 1986-11-06
GB8516123D0 (en) 1985-07-31
EP0154358A2 (de) 1985-09-11
US4777813A (en) 1988-10-18
BR8303918A (pt) 1984-02-28
DE3227479A1 (de) 1984-02-02
GB2127441B (en) 1986-06-25
HK9587A (en) 1987-02-06
EP0154358A3 (de) 1986-01-08
GB2127441A (en) 1984-04-11
DE3227479C2 (de) 1985-07-18
MY8700325A (en) 1987-12-31
EP0099490A1 (de) 1984-02-01
GB2160233B (en) 1986-06-25
IN160694B (OSRAM) 1987-08-01
HK7987A (en) 1987-01-28
JPH0424448B2 (OSRAM) 1992-04-27
CS539283A3 (en) 1992-03-18
GB2160233A (en) 1985-12-18
JPS5971418A (ja) 1984-04-23

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