EP0026258B1 - Stapelfaserschneidmaschine - Google Patents

Stapelfaserschneidmaschine Download PDF

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Publication number
EP0026258B1
EP0026258B1 EP80102911A EP80102911A EP0026258B1 EP 0026258 B1 EP0026258 B1 EP 0026258B1 EP 80102911 A EP80102911 A EP 80102911A EP 80102911 A EP80102911 A EP 80102911A EP 0026258 B1 EP0026258 B1 EP 0026258B1
Authority
EP
European Patent Office
Prior art keywords
axis
cutting machine
ring
knife holder
accordance
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
EP80102911A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0026258A2 (de
EP0026258A3 (en
Inventor
Albert Mcluskie
Johann Ratjen
Ernst Vehling
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.)
NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH
Original Assignee
Neumuenstersche Maschinen und Apparatebau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Neumuenstersche Maschinen und Apparatebau GmbH filed Critical Neumuenstersche Maschinen und Apparatebau GmbH
Priority to AT80102911T priority Critical patent/ATE4180T1/de
Publication of EP0026258A2 publication Critical patent/EP0026258A2/de
Publication of EP0026258A3 publication Critical patent/EP0026258A3/de
Application granted granted Critical
Publication of EP0026258B1 publication Critical patent/EP0026258B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
    • D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/913—Filament to staple fiber cutting

Definitions

  • the invention relates to a staple fiber cutting machine according to the preamble of patent claim 1.
  • a staple fiber cutting machine of this type has become known from DE-OS No. 2809592.
  • the knife carrier is a rotating roller from which the knives protrude radially.
  • a cylindrical pressure ring which is widened like a cam on part of the circumference is arranged in a stationary manner and coaxially surrounds the rotating roller.
  • the well-known machine is characterized by its extraordinarily simple structure, by its exact mode of operation and by low knife wear.
  • a disadvantage is that sliding friction occurs between the co-rotating winding and the fixed pressure ring, which, at the high working speeds required today, can damage the material due to heating.
  • the feed of the roll on the roller also generates frictional forces.
  • the specified German publication also contains the suggestion to reduce the roll diameter in the direction of the knives. However, no constructive solution is given for this.
  • the knife carrier is a round disc that is equipped with a ring of knives parallel to the axis with outward-facing blades.
  • the pressure ring is mounted parallel to the axis, but eccentrically to the knife carrier, so that its inner surface almost touches the knife edges at one point.
  • sliding friction is avoided due to the rotatable mounting of the pressure ring.
  • it is disadvantageous that the contact area between the winding layers and the pressure ring is relatively small during operation. This results in a restless run and high knife wear.
  • the invention has for its object to provide a machine of the type specified in the preamble, which both enables the extensive elimination of the frictional forces and ensures an enlarged angular range for the action of the pressure ring.
  • FIG. 1a shows a detail of the embodiment shown in FIG. 2 in a section through a plane perpendicular to the plane of FIG. 2.
  • a shaft 3 is mounted in a machine frame 1 with ball bearings 2, which shaft can be rotated about the geometrical axis 4 and driven by a motor 7.
  • the knife carrier 5 is seated on the free end of the shaft 3. It essentially consists of a disk 6 which has an annular extension 6a in the edge area on the side lying above in the drawing.
  • the peripheral surface of the disc 6 together with the outer surface of the extension 6a is designed as a spherical zone 5a.
  • the end face 8 intersects the axis 4 in the vicinity of the center of the sphere 9.
  • the ring-shaped extension 6a is provided with several — for example, seventy-two — evenly distributed slots on the circumference, which extend from the end face 6b down to the plane 10.
  • Short knives 11 only sit in a few slots.
  • the cutting edges 12 of the knives 11 face the plane of the end face 8 and are arranged radially, ie they form an angle of 90 ° with the axis 4, so that they all lie in the plane 10.
  • a retaining ring 13 is used to fasten the knives 11, which fits in the annular extension 6 a and is screwed to the disk 6. It has an annular flange 13a which overlaps the knife ends.
  • a ring 15 is fastened on the ends of the knives 11 protruding from the knife carrier 5. For design reasons, this is composed of several rings 16, 17 and 18.
  • the ring 16 consists of a cylindrical part 16a and a flange-like part 16b.
  • the part 16a is provided, similarly to the extension 6a, with radial slots in which the outer ends of the knives 11 are seated.
  • a clamping ring 19 is provided to ensure a tight fit.
  • annular channel 20 Between the ring 15 and the spherical surface of the knife carrier 5 there is an annular channel 20 in front of the cutting edges 12 of the knives 11.
  • the surface of the ring 15 facing the spherical zone 5a is designed as a concentric hollow spherical zone in the region of the annular channel 20. Since the surface is relatively narrow and the tolerances are not too high, a conical shape that conforms to the ideal hollow spherical shape is sufficient. In any case, the lateral boundaries of the ring channel 20 appear on average as essentially parallel, short lines. Behind the plane 10 of the knife edges 12, the distance between the knife carrier 5 and the ring 15 increases, so that there is a relatively wide gap behind the knives 11 which is open all round.
  • a bearing housing 21 Fixed to the machine frame is a bearing housing 21, the geometric axis 22 of which forms an angle of approximately 5 ° with the axis 4 and intersects it at the center 9 of the ball. To achieve this oblique axis position, the end face of the bearing housing 21 flanged onto the machine frame 1 is chamfered.
  • a hollow pin attached to a circular disk 24 is mounted with ball bearings 23, which surrounds the shaft 3 without touching it.
  • the disk 24 carries the actual pressure ring 26. This consists of a thin-walled ring part 26a with an attached flange 26b, which is screwed to the disk 24.
  • the inner surface of the thin ring part 26a has the shape of a hollow spherical zone which adapts to the spherical surface of the knife carrier 5 with little play. Accordingly, the center of the hollow spherical zone must coincide with the center of the spherical zone 5a.
  • the ring 26a dips into the ring channel 20, whereas on the other side due to the inclination of the axis 22 the ring channel 20 is open and between the end face 26d of the ring 26a and the facing edge of the ring 15, a gap 27 remains free, the width of which approximately corresponds to the width of the ring channel 20.
  • the wall thickness of the ring 26a is dimensioned such that it can dip into the ring channel 20 without hindrance.
  • the outer surface is spherical in the area of the immersion depth.
  • the end surface 26d is not exactly flat, but is slightly conical, so that at the point at which the ring 26a plunges deepest into the ring channel 20, the end surface 26d is exactly parallel to the opposite cutting edge 12. At this point, the distance between the cutting edge 12 and the end face 26d is small compared to the width of the annular gap 20, as can be clearly seen in the left side of the drawing.
  • a roller 28 with a circumferential annular groove is mounted on the side. As can not easily be seen from the drawing, this roller is arranged in such a way that the cable to be supplied runs tangentially onto the knife holder 5 at the point at which the gap 27 has its greatest width.
  • the central plane of the roller 28 lies between the plane 10, the cutting edges 12 and the plane parallel to this through the center 9.
  • the pressure ring 26 which is free to rotate about its stationary axis 22, ie without its own drive, is carried along by the static friction and rolls on the wrap. In this way, its rotational speed automatically adjusts to the rotational speed of the knife carrier 5, so that there is no sliding movement between the cable and the pressure ring. This eliminates sliding friction.
  • a shaft 103 is mounted in the machine frame 101 with ball bearings 102, which shaft can be rotated about the geometrical axis 104 and can be driven by a motor (not shown).
  • the knife carrier 105 is seated on the free end of the shaft 103.
  • This has a disk 106 as the base body, which has an annular extension 106a on the upper side in the edge region.
  • the peripheral surface is designed as a spherical zone 105a.
  • the lower edge of the spherical zone lies in a plane 108, the distance from the spherical center 109 corresponds to almost half the radius of the sphere.
  • the upper edge lies in a plane 110, whose distance from the center of the sphere corresponds approximately to 0.7 times the radius of the sphere.
  • a retaining ring 113 which is screwed to the disk 106, fits in the annular extension 106. It is provided with a large number of evenly distributed radial tips on the circumference. Knives 111 sit therein, the cutting edges 112 of which are directed outwards and form an angle of approximately 5 ° with the axis 104, so that the projecting part, as seen from the axis, is inclined outwards.
  • the retaining ring 113 is covered by a cap 107.
  • the outer surfaces of the retaining ring 113 and the cap 107 complement the spherical zone 105a to form a spherical cap.
  • a ring 115 which is composed of several rings 116, 117 and 118, is attached to the protruding ends of the knives 111.
  • the ring 116 has on the inside a conical surface 116a, the cone angle of which corresponds to the angle between the knife edge 112 and the axis 104, so that the upper parts of the knife edges fit snugly against the conical surface 116a.
  • a surface 116b adjoins the surface 116a, which is designed as a hollow spherical zone and is arranged at a distance concentrically to the spherical zone 105a.
  • the surfaces 105a and 116b form an open annular channel 120 in front of the cutting edges 112, the side walls of which form an angle of approximately 50 ° with the knife edges.
  • a retaining ring 117 is fitted in the conical surface 116a. It is provided all around with radial slots in which the ends of the knives 111 sit. It is firmly connected to the ring 116 by means of a coupling ring 118. Clamping rings 114 and 119 are provided to ensure a firm fit of the knives.
  • An annular nozzle arrangement 129 with a distribution channel 131 is arranged directly on the ring 115. This is connected via the connector 130 to a compressed air line, not shown.
  • a hollow pin 125 which surrounds the shaft 103 without touching it, is screwed onto a base plate 121.
  • the axis 122 of the hollow pin 125 is perpendicular to the base plate 121 and intersects the axis 104 at an angle of 15 ° in the center of the ball 109.
  • a disk 124 is freely rotatably supported by ball bearings 123.
  • the pressure ring 126 is screwed onto this disk. It consists of a relatively thin-walled support ring 126a with a widened upper edge part 126b.
  • the outer and inner surface of the edge part 126b are designed as a spherical zone or hollow spherical zone, so that they adapt to the surfaces 105a and 116b with little play.
  • the pressure ring 126 plunges deep into the ring channel 120, whereas on the other side due to the inclination of the axis 122 the ring channel 120 is open and between the end face 126d and the edge of the ring 115 a further Gap 127 remains free.
  • the end surface 126d is conical so that it lies approximately parallel to the opposite cutting edge 112 at the point at which the pressure ring 126 plunges deepest into the ring channel 120.
  • the base plate 121 By pivoting the base plate 121 about an axis that is perpendicular to the drawing plane and intersects the axes 104 and 122 at the center of the sphere 109, the angle between the axes 104 and 122 and thus the depth of immersion of the pressure ring 126 in the annular channel 120 can be changed.
  • two upwardly directed arms 132 are welded to the side of the base plate 121, which must be imagined in front of or behind the plane of the drawing in FIG. 2.
  • Axle journals 133 which are seated in bearing bushes 134 of two mounting brackets 135 screwed to the machine frame 101, enable pivoting about the axis 136.
  • An eyelet 136 is attached to the underside of the base plate 121.
  • a suitable, for example fork-shaped end piece of an actuator (not shown), for example an adjusting screw or a hydraulic cylinder, engages on this eyelet. In this way, the base plate 121 can be locked in any desired position.
  • a roller attached to the machine frame which is not shown in FIG. 3, is provided similar to the embodiment shown in FIG. 1.
  • the method of operation corresponds to the method of operation of the machine shown in FIG. 1, but the machine according to FIG. 2 is more suitable for very strong cables. Because of the essentially vertical position of the knives 111, the cutting length is practically the same for all fibers, regardless of whether they are cut at the lower or upper end of the cutting edge. It is therefore possible to dimension the cutting edges for long cables relatively long.
  • the knife carrier consists of a ring 205 which is screwed onto a stationary cylindrical hollow body 206.
  • the order The starting surface of the knife carrier 205 is designed as a spherical zone 205a, the center 209 of which lies only slightly above the plane of its upper edge.
  • An annular extension 205b on the underside of the ring 205 is provided with slots in which radial knives 211 sit, the cutting edges 212 of which point upwards in the drawing.
  • the distance of the plane 210 of the knife edges 212 from the ball center 209 is approximately one third of the ball radius.
  • the outer ends of the knives 210 are fastened with a slotted ring 215 on the edge of a circular opening in a machine housing 201.
  • the inner surface of the ring 215 is designed as a hollow spherical zone 215a and is arranged at a distance from the spherical zone 205a, so that there is an annular channel 220 in front of the cutting edges 212.
  • a shaft 203 is mounted in the cylindrical hollow body 206 and can be rotated about the axis 204 and driven by a motor, not shown.
  • the shaft 203 is provided with a cranking 221 with a cylindrical outer surface, the axis 222 of which is inclined to the axis 204 by approximately 5 °.
  • a circular disk 224 is supported on the crank 221 with ball bearings 223. This carries the pressure ring 226. Its outer and inner surfaces are spherical, so that they fit into the ring channel 220 with little play. As a result of the inclined axial position, the pressure ring 226 dips into the ring channel 220 on one side. A gap 227 remains free on the opposite side.
  • a flyer 232 is seated on the end of the shaft 203, in the drawing above the offset 221, a flyer 232 is seated.
  • This consists in the usual way of a curved tube 233, which is axially aligned at one end and tangentially at the other end.
  • the tube is attached to a hood 234 which covers the disk 224 like an inverted funnel.
  • the tangential end 233a of the tube 233 is adjacent to the gap 227.
  • the cable is fed axially through the mouth 235. It is deflected by the rotating flyer and placed on the stationary surface 205a.
  • the winding layer thus formed is pressed in the direction of the cutting edges 212 by the pressure ring 226.
  • the pressing member 226 makes a wobbling movement with the disk 224, its axis 222 precessing about the axis 204.
  • the point at which the end face 226d comes closest to the knife edges is offset at any time by approximately 180 ° to the point at which the cable is laid on by the flyer.
  • the disk 224 rotates slowly about the axis 222, so that the pressure ring 226 rolls on the stationary winding without sliding.
  • the rotational speed of the pressure ring is automatically adjusted to the rotational speed of the knife carrier, which in this case is zero, in the sense that no sliding friction occurs.
  • the staple fibers fall into the annular space underneath and can, for example, be suctioned off laterally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Knives (AREA)
  • Tyre Moulding (AREA)
EP80102911A 1979-09-27 1980-05-24 Stapelfaserschneidmaschine Expired EP0026258B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80102911T ATE4180T1 (de) 1979-09-27 1980-05-24 Stapelfaserschneidmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2939154A DE2939154C2 (de) 1979-09-27 1979-09-27 Stapelfaserschneidmaschine
DE2939154 1979-09-27

Publications (3)

Publication Number Publication Date
EP0026258A2 EP0026258A2 (de) 1981-04-08
EP0026258A3 EP0026258A3 (en) 1981-09-09
EP0026258B1 true EP0026258B1 (de) 1983-07-20

Family

ID=6082015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102911A Expired EP0026258B1 (de) 1979-09-27 1980-05-24 Stapelfaserschneidmaschine

Country Status (7)

Country Link
US (1) US4343069A (da)
EP (1) EP0026258B1 (da)
JP (1) JPS5649023A (da)
AT (1) ATE4180T1 (da)
DE (2) DE2939154C2 (da)
DK (1) DK151907C (da)
SE (1) SE436765B (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240657A1 (de) * 1981-11-05 1983-05-11 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Faserschneidmaschine

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939154C2 (de) * 1979-09-27 1982-08-05 Neumünstersche Maschinen- und Apparatebau GmbH (Neumag), 2350 Neumünster Stapelfaserschneidmaschine
DE3105877A1 (de) * 1981-02-18 1982-09-02 Neumünstersche Maschinen- und Apparatebau GmbH (Neumag), 2350 Neumünster Stapelfaserschneidmaschine
DE3108096A1 (de) * 1981-03-04 1982-09-16 Neumünstersche Maschinen- und Apparatebau GmbH (Neumag), 2350 Neumünster Stapelfaserschneidmaschine
FR2646081A1 (da) 1989-04-20 1990-10-26 Adir
US5200269A (en) * 1990-06-01 1993-04-06 E. I. Du Pont De Nemours And Company Apparatus and method for baling cut fibers and product
US5187845A (en) * 1990-06-01 1993-02-23 E. I. Du Pont De Nemours And Company Method for heating crimped fibers and product thereof
DE9100822U1 (da) * 1991-01-25 1992-02-27 Neumag - Neumuenstersche Maschinen- Und Anlagenbau Gmbh, 2350 Neumuenster, De
SE517931C2 (sv) * 2000-11-10 2002-08-06 Ericsson Telefon Ab L M Anordning för att kapa en optisk fiber
CA2528104A1 (en) * 2003-06-03 2004-12-16 J.G.S. Billingsley, Inc. Method and apparatus for adjustable cutting of filamentary material
DE102008036500A1 (de) 2008-08-05 2010-02-11 Hans-Dieter Cornelius Verfahren zur Herstellung eines graduierten Mikrowellenabsorbers
US9862564B2 (en) 2013-10-25 2018-01-09 Columbia Insurance Company Cutter assembly for stretched yarn

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB729794A (en) * 1952-03-03 1955-05-11 Maurer Sa Ing A Apparatus for cutting filaments, yarns and threads
CH321738A (fr) * 1954-01-08 1957-05-15 Algemeene Kunstvezel Mij Nv Procédé de fabrication de fibres à partir d'une matière fondue et dispositif pour la mise en oeuvre de ce procédé
US3062082A (en) * 1959-05-18 1962-11-06 Eastman Kodak Co Apparatus for cutting textile fibers
FR2127104A5 (en) * 1971-02-23 1972-10-13 Elitex Zavody Textilniho Feed mechanism for a fibre - cutting device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA730842A (en) * 1966-03-29 S. Medlycott Lionel Production of staple fibre from continuous filaments
BE504425A (da) * 1950-07-10 1900-01-01
US3062022A (en) * 1959-12-15 1962-11-06 John R Averill Heat pump
US3826163A (en) * 1973-07-05 1974-07-30 Eastman Kodak Co Method for applying pressure in cutting elongated flexible material into predetermined shorter lengths, and apparatus for practicing the improved method
NL7415905A (nl) * 1974-12-06 1976-06-09 Akzo Nv Werkwijze en inrichting voor het snijden van vezels.
US4204443A (en) * 1977-03-04 1980-05-27 Mcluskie Albert Cutting method and apparatus
DE2752068A1 (de) * 1977-11-22 1979-05-23 Bayer Ag Verfahren und vorrichtung zum zerschneiden von faserkabeln zu stapelfasern
DE2939154C2 (de) * 1979-09-27 1982-08-05 Neumünstersche Maschinen- und Apparatebau GmbH (Neumag), 2350 Neumünster Stapelfaserschneidmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB729794A (en) * 1952-03-03 1955-05-11 Maurer Sa Ing A Apparatus for cutting filaments, yarns and threads
CH321738A (fr) * 1954-01-08 1957-05-15 Algemeene Kunstvezel Mij Nv Procédé de fabrication de fibres à partir d'une matière fondue et dispositif pour la mise en oeuvre de ce procédé
US3062082A (en) * 1959-05-18 1962-11-06 Eastman Kodak Co Apparatus for cutting textile fibers
FR2127104A5 (en) * 1971-02-23 1972-10-13 Elitex Zavody Textilniho Feed mechanism for a fibre - cutting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240657A1 (de) * 1981-11-05 1983-05-11 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Faserschneidmaschine

Also Published As

Publication number Publication date
DK303880A (da) 1981-03-28
ATE4180T1 (de) 1983-08-15
JPS5759327B2 (da) 1982-12-14
DE2939154A1 (de) 1981-04-02
JPS5649023A (en) 1981-05-02
EP0026258A2 (de) 1981-04-08
DE3064229D1 (en) 1983-08-25
SE436765B (sv) 1985-01-21
DK151907B (da) 1988-01-11
EP0026258A3 (en) 1981-09-09
SE8004492L (sv) 1981-03-28
US4343069A (en) 1982-08-10
DK151907C (da) 1988-06-27
DE2939154C2 (de) 1982-08-05

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