EP0355291A1 - Verfahren zum Herstellen von Auflösewalzenringen - Google Patents

Verfahren zum Herstellen von Auflösewalzenringen Download PDF

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Publication number
EP0355291A1
EP0355291A1 EP89110626A EP89110626A EP0355291A1 EP 0355291 A1 EP0355291 A1 EP 0355291A1 EP 89110626 A EP89110626 A EP 89110626A EP 89110626 A EP89110626 A EP 89110626A EP 0355291 A1 EP0355291 A1 EP 0355291A1
Authority
EP
European Patent Office
Prior art keywords
sawtooth wire
foot
opening roller
sawtooth
wire
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.)
Withdrawn
Application number
EP89110626A
Other languages
German (de)
English (en)
French (fr)
Inventor
Karl-Heinz Schmolke
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.)
Hollingsworth GmbH
Original Assignee
Hollingsworth 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 Hollingsworth GmbH filed Critical Hollingsworth GmbH
Publication of EP0355291A1 publication Critical patent/EP0355291A1/de
Withdrawn legal-status Critical Current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
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/88—Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips
    • 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 invention relates to a method for producing opening roller rings, in particular for open-end spinning machines, in which the length of the ring is helically wound with a sawtooth wire having a foot, the foot regions of adjacent sawtooth wire turns touching.
  • the invention further relates to a saw tooth wire for performing the method.
  • opening roller rings are produced by winding a piece of pipe which already has the length of the finished opening roller ring with a sawtooth wire, the beginning and end of the sawtooth wire being fastened to the tube piece.
  • This manufacturing method cannot keep up with the required concentricity of opening roller rings.
  • opening roller rings including their clothing are often milled from the full, which is complex and expensive.
  • the sawtooth wire is wound on a core of multiple ring length, that the foot areas of adjacent sawtooth wire turns are connected to one another by a tube and that the interconnected sawtooth wire turns are removed from the core and the tube is divided into the individual opening roller rings.
  • a method for producing a needle carrier is known from EP-A-142 073, in which the base body comprising the needles is formed by a helically wound carrier tape provided with bores, the turns of the carrier tape being glued together.
  • the known method differs from the method according to the invention not only in that it refers to a needle carrier, but also very significantly in that only a base body is wound there. This causes the same concentricity problems caused by the beginning and end of the carrier tape as in the manufacturing process of the type mentioned at the beginning.
  • the teeth are removed at intervals corresponding to the length of the ring, in each case in a circumferential indentation groove which extends approximately to the foot of the sawtooth wire, and the tube is then separated into the individual opening roller rings approximately in the middle of the indentation grooves.
  • the two sides of the opening roller rings are tooth-free, so that on these sides the collar disks which are frequently used for the storage of the opening roller rings can be applied without problems.
  • the end faces of the opening roller rings can be chamfered towards the top thereof.
  • the bevel created in this way can already be sufficient for the teeth on the end faces not to influence the flange disks intended for storage.
  • a preferred way of connecting the individual base areas of the adjacent sawtooth wire turns is to weld the base areas together. In this way, a one-piece tube is achieved, which is subsequently separated into the individual opening roller rings.
  • the foot areas are continuously curved along the sawtooth wire electron or laser welded.
  • the electron beam or laser beam welding process allows welding in a very small space, so that sawtooth wires with a small foot can also be easily connected to one another.
  • the effective depth of the weld can be adjusted fairly precisely, so that the sawtooth wires can be prevented from being welded to the core in a simple manner.
  • the adjacent sawtooth wire turns can be welded particularly easily if the wound core is rotated past a welding beam directed at the respective foot area with a feed corresponding to the slope of the sawtooth wire turns.
  • This method is carried out analogously to the cutting of a thread by means of a lathe, the shaft to be provided with the thread being moved past the turning steel at a specific feed rate.
  • a particularly simple separation of the tube into the individual opening roller rings can be achieved if the tube is separated by means of an electron or laser beam. As a result, smooth end faces are achieved, which no longer reveal where a turn of the sawtooth wire begins.
  • the method can be carried out particularly preferably with a sawtooth wire, the foot of which has a projection extending over the entire length of the wire on one side and a corresponding recess on the other side, so that when the core is wound, projections and recesses of adjacent sawtooth wire windings mesh with one another, the recess and the projection has a greater depth than the width of the teeth of the sawtooth wire.
  • Profiled sawtooth wires are already known, the feet of which have lateral projections and recesses, so-called wires with an interlinking or locking foot, the projections and recesses having approximately the same depth as the tooth width.
  • the interlinking only has the purpose that the turns remain interlocked even if a single turn breaks due to an extraordinary load on the cardboard or carded cardboard reel wound with the sawtooth wires. Even in the case of such a crack, the coils remain clawed due to the interlinking, so that the entire sawtooth coating cannot come off, which prevents the working elements of the card or the card, which are arranged around the reel, from being damaged.
  • the base of the sawtooth wire has on one side a V-shaped projection in cross section with the upper and lower sides tapering to the side and on the opposite side on a corresponding V-shaped recess.
  • the depth of the recess in the base of the sawtooth wire corresponds approximately to the width of the sawtooth wire without taking the projection into account. This means that the projection of a sawtooth wire, seen in the axial direction of the opening ring, penetrates almost completely into the foot region of the adjacent sawtooth wire winding. As a result, a large overlap area of the adjacent sawtooth wire windings is achieved.
  • top and bottom of the projection enclose an angle of approximately 60 ° .
  • Another sawtooth wire with which the method can preferably be carried out, has an essentially L-shaped angled foot, which extends over the entire length of the wire, both the top and the bottom of the foot being stepped in a step-like manner transversely to the longitudinal direction of the sawtooth wire , so that when the sawtooth wire is wound up, the top of a step of a sawtooth wire winding touches the underside of a step of an adjacent sawtooth wire winding arranged above it. It is particularly preferred if the foot is formed with at least two steps, so that two top and Touch the undersides of steps together. This achieves particularly good fixation of adjacent sawtooth wire windings, and it is also possible to weld several interfaces when the laser or electron beam is inclined.
  • the depth of a step corresponds to approximately half the width of the foot at this point of the foot, it can be achieved, in particular if the height of a step corresponds to approximately half the thickness of the foot at this point of the foot, that the foot of the sawtooth wire is everywhere in the essentially the same material thickness, which has the advantage that the sawtooth wire can be produced in a particularly simple manner without warping, which also has a favorable influence on the quality of the opening roller rings made with this sawtooth wire.
  • the welding of the individual sawtooth wire turns can be simplified in a favorable manner in that the sum of the depths of the steps corresponds to approximately half the total width of the foot. Then the laser or electron beam can be guided exactly radially to the core axis between the turns, since it then always hits interfaces there.
  • FIG. 1 shows a core 2 wound with a sawtooth wire 1, the length of which is a multiple of the length a of an individual opening roller ring 3.
  • the beginning and end of the sawtooth wire 1 are secured to the core by means of screws 4.
  • the sawtooth wire 1 is one with a lateral foot 5.
  • the foot 5 has a projection 6 on one side and a recess 7 on the other side, the projection 6 being one Turn 8 engages in the recess 7 of an adjacent turn 9.
  • the depth b of a recess 7 is several times greater than the width c of a tooth 10 of the sawtooth wire.
  • the depth b of the recess 7 corresponds to almost the entire width of the foot, if one disregards the depth of the projection 6.
  • the projection 6 and the recess 7 are V-shaped in cross section, the top 11 and the bottom 12 of the projection 6 converge to the side.
  • the angle ⁇ enclosed by the upper side 11 and the lower side 12 is 60 ° in the exemplary embodiment described here.
  • a tubular core 2 is wound with the sawtooth wire 1, the projections 6 of the turns 8 engaging in the recesses 7 of the adjacent turns 9.
  • the beginning and end of the sawtooth wire 1 wound on the core 2 are secured with screws 4.
  • the individual windings 8 and 9 of the sawtooth wire 1 are welded to one another by means of a laser or electron beam 13.
  • the welding beam 13 is aimed in a fixed manner at the foot area 5 between two adjacent windings 8 and 9 of the sawtooth wire 1, while the core 2 is rotated about its axis in the direction of arrow D and in the direction of arrow S in accordance with the pitch of the windings 8 and 9 of the sawtooth wire 1 is moved.
  • the core rotates continuously past the welding beam 13, which is always aimed at the foot area 5 between two turns 8 and 9 during these movements.
  • the effective depth of the welding beam 13 is set so that it reaches about 90% of the height h of the foot 5 of the sawtooth wire 1.
  • the feet of adjacent windings 8 and 9 are welded to one another in the region of the overlap zone d at two interfaces, namely the top 11 and the bottom 12 of a projection 6, without the foot 5 being connected to the core 2.
  • the end faces 14 and 15 of the opening roller ring 3 are provided with a chamfer.
  • the inside of the ring can then also be ground.
  • an intermediate step can also be provided in the method described here, in which the sawtooth wire 1 is plasma-coated after winding onto the core 2.
  • the method has been described using a sawtooth wire with a foot chain, it is also conceivable that the method can be carried out with a sawtooth wire that has a foot lock. In any case, care must be taken to ensure that the depth of the projections or recesses in the case of laterally arranged feet is greater than the width of a tooth, so that it is advantageous for laser welding Tooth-free coverage zone.
  • FIG. 4 shows a further exemplary embodiment of the invention. Identical reference numerals are used for identical and similar components.
  • Fig. 4 the method using a sawtooth wire 1 with foot chaining according to DIN 64124 sheet 3 is shown.
  • This saw tooth wire differs from the saw tooth wire used in the embodiment described above in that the depth of the recesses 7 or the projections 6 is less than or equal to the tooth width c.
  • the laser beam is turned by the angle ⁇ to the axis 17 of the tube 2, so that it strikes the foot 5 of the sawtooth wire at an angle.
  • the laser beam also reaches the area below the teeth, namely where the projections 6 and recesses 7 interlock. Otherwise, the method corresponds to that of the exemplary embodiment described above.
  • FIG. 5 A further exemplary embodiment is described in FIG. 5, which also corresponds in principle to the exemplary embodiment described first, but here a sawtooth wire 1 with a foot lock was used.
  • This is a sawtooth wire, in which both the top and the bottom of the foot 5 are stepped.
  • the tops of the steps are each aligned horizontally, while the connecting sections of the steps are oriented perpendicularly or radially to the axis of the tube 2.
  • the depth T of the individual steps 18 to 21 is approximately half Width B of the foot 5 at this point.
  • the total width L of the foot 5 is four times the depth T of one of the steps 18 to 21.
  • the height H of a step 18 to 21 is about half as large as the thickness K of the foot 5 at this point.
  • the total height of a foot 5 is approximately three times the height of one of the steps 18 to 21.
  • the laser beam 13 strikes the interface between the top of the step 18 and the underside of the step 21. There, the two turns 8 and 9 are welded together. In principle, however, the welding can also take place between the top of the step 19 and the bottom of the step 21. With an inclined laser beam, welding could also take place at both interfaces, so that three sawtooth wire turns would be connected to one another by one weld.
  • the further process sequence for producing the opening roller ring corresponds to that of the exemplary embodiment described first.
  • welding the sawtooth wire turns to a tube also has the advantage that the inner wall of the opening roller ring can also be finely ground in order to meet the highest accuracy requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Laser Beam Processing (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Welding Or Cutting Using Electron Beams (AREA)
EP89110626A 1988-07-28 1989-06-12 Verfahren zum Herstellen von Auflösewalzenringen Withdrawn EP0355291A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825739 1988-07-28
DE3825739A DE3825739A1 (de) 1988-07-28 1988-07-28 Verfahren zum herstellen von aufloesewalzenringen

Publications (1)

Publication Number Publication Date
EP0355291A1 true EP0355291A1 (de) 1990-02-28

Family

ID=6359808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89110626A Withdrawn EP0355291A1 (de) 1988-07-28 1989-06-12 Verfahren zum Herstellen von Auflösewalzenringen

Country Status (5)

Country Link
US (1) US4983808A (cs)
EP (1) EP0355291A1 (cs)
JP (1) JPH0280625A (cs)
CS (1) CS433189A2 (cs)
DE (1) DE3825739A1 (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663346A1 (fr) * 1990-06-15 1991-12-20 Truetzschler & Co Cylindre de cardage a dents de scie portant une garniture helicouidale en dents de scie et fil de garniture pour sa realisation.
EP2298969A1 (de) * 2009-08-28 2011-03-23 Graf + Cie AG Zahngarnitur für einen Kamm einer Kämm-Maschine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818997A1 (de) * 1998-04-28 1999-12-30 Hollingsworth Gmbh Verfahren zum Herstellen einer Auflösewalze
DE19915251A1 (de) * 1999-04-03 2000-10-05 Schlafhorst & Co W Verfahren und Vorrichtung zum Herstellen von Garniturringen sowie Auflösewalze mit Garniturring
CH700629A2 (de) * 2009-03-18 2010-09-30 Rieter Ag Maschf Fixkamm für eine Kämmmaschine.
CH700628B1 (de) * 2009-03-18 2013-07-31 Rieter Ag Maschf Verfahren zur Herstellung eines einstückigen Garniturelements einer Kämmgarnitur einer Kämmmaschine.
JP6335602B2 (ja) * 2014-04-14 2018-05-30 三菱重工業株式会社 レーザ溶接方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB854090A (en) * 1957-02-13 1960-11-16 Gustav Damgaard Improvements in saw tooth or garnett wire for the rollers or cylinders of textile machines
DE2002639A1 (de) * 1969-01-24 1970-08-27 Hollingsworth Gmbh Faserkrempelvorrichtung und Verfahren zu ihrer Herstellung
CH497561A (de) * 1970-01-14 1970-10-15 Graf & Co Ag Kardierwalze oder -trommel
GB2022640A (en) * 1978-05-25 1979-12-19 English Card Clothing Interlocking card-clothing wire

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3774708D1 (de) * 1987-08-27 1992-01-02 Rheinmetall Gmbh Verfahren zum aufbringen und befestigen von fuehrungsbaendern auf geschosshuellen.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB854090A (en) * 1957-02-13 1960-11-16 Gustav Damgaard Improvements in saw tooth or garnett wire for the rollers or cylinders of textile machines
DE2002639A1 (de) * 1969-01-24 1970-08-27 Hollingsworth Gmbh Faserkrempelvorrichtung und Verfahren zu ihrer Herstellung
CH497561A (de) * 1970-01-14 1970-10-15 Graf & Co Ag Kardierwalze oder -trommel
GB2022640A (en) * 1978-05-25 1979-12-19 English Card Clothing Interlocking card-clothing wire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663346A1 (fr) * 1990-06-15 1991-12-20 Truetzschler & Co Cylindre de cardage a dents de scie portant une garniture helicouidale en dents de scie et fil de garniture pour sa realisation.
ES2042368A2 (es) * 1990-06-15 1993-12-01 Truetzschler Gmbh & Co Kg Cilindro de diente de sierra con guarnicion de diente de sierra que discurre lineal en espiral.
EP2298969A1 (de) * 2009-08-28 2011-03-23 Graf + Cie AG Zahngarnitur für einen Kamm einer Kämm-Maschine

Also Published As

Publication number Publication date
JPH0280625A (ja) 1990-03-20
CS433189A2 (en) 1991-09-15
US4983808A (en) 1991-01-08
DE3825739A1 (de) 1990-02-01

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