EP0311713A1 - Cylindre peigneur pour des machines de filature à bout libre - Google Patents

Cylindre peigneur pour des machines de filature à bout libre Download PDF

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Publication number
EP0311713A1
EP0311713A1 EP87117690A EP87117690A EP0311713A1 EP 0311713 A1 EP0311713 A1 EP 0311713A1 EP 87117690 A EP87117690 A EP 87117690A EP 87117690 A EP87117690 A EP 87117690A EP 0311713 A1 EP0311713 A1 EP 0311713A1
Authority
EP
European Patent Office
Prior art keywords
groove
sawtooth wire
foot
opening roller
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Withdrawn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
EP87117690A
Other languages
German (de)
English (en)
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 EP0311713A1 publication Critical patent/EP0311713A1/fr
Withdrawn legal-status Critical Current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 invention relates to an opening roller for open-end spinning machines, with a sawtooth wire fitting and a roller body made of aluminum or a similar material, in the outer surface of which a groove is incorporated in a screw-like arrangement, into which the sawtooth wire is inserted with its foot.
  • Such an opening roller for open-end spinning machines has long been known in practice.
  • the sawtooth wire has a very high base and is fully inserted into a very deep groove in the roller body.
  • the height of the base of the sawtooth wire in the known opening roller is approximately 1/3 to half the total height of the sawtooth wire.
  • the known opening roller enables the sawtooth wire to be attached without a gap to the outer surface of the roller body. This is important since the fibers to be spun are otherwise easily pinched between the gaps and impair the dissolution of the sliver fed.
  • a opening roller is also known, which is mounted on a groove-free roller body. Although the same height of all tooth tips and thus an exact concentricity can be guaranteed with this opening roller, another problem occurs with this opening roller.
  • the sawtooth wire is bent into the helical arrangement, it does not bend in all places. The actual bending of the sawtooth wire only takes place between two teeth, since the section modulus in the tooth area is orders of magnitude higher. As a result, the sawtooth wire is stretched between two teeth in the foot area. The consequence of this is that constriction points form on the one hand between the teeth and that on the other hand the underside of the foot area is not circular, but is curved in the form of a polygon.
  • This effect is also called the polygon effect.
  • This behavior of the sawtooth wire during bending has the result that there are gaps between the underside of the sawtooth wire and the outer surface of the roller body, in which fibers can become jammed. Polyester fibers are particularly sensitive here.
  • the invention has for its object to improve the concentricity with a opening roller of the type mentioned without gaps between the sawtooth wire and the roller body, in which fibers can jam.
  • the groove is at least slightly narrower at its upper edge than the foot width of the sawtooth wire.
  • This solution has the advantage that after the sawtooth wire has been inserted, it no longer has to be fastened in the grooves by calking.
  • the sawtooth wire is rather used and lies on the groove base.
  • the finished opening roller thus has a concentricity, as is already known from groove-free opening rollers.
  • the fact that the groove is also narrower than the foot of the sawtooth wire pushes material of the webs located between the grooves to the side, whereby on the one hand the clamping effect is achieved in order to hold the sawtooth wire and on the other hand the webs already adhere to during the insertion of the sawtooth wire adjust the outer contour of the foot area. This is important because when the sawtooth wire is bent, constriction points occur between two teeth before it is inserted into the groove.
  • the foot width of the sawtooth wire is about 2% less at these points than before the sawtooth wire was bent. Since the groove width is now smaller than the foot width of the sawtooth wire, the material of the webs is essentially pushed away only in the area of the wider foot sections. There is therefore no gap between the groove edges and the base of the sawtooth wire, so that even fine fibers cannot be pinched. With the opening roller according to the invention it is therefore possible for the first time to move the opening roller close to the dining table even when spinning polyester fibers. It is noteworthy here that this is not at the expense of the design effort.
  • the groove is approximately as wide as constriction points at the foot of the sawtooth wire, which result from bending around the roller body of the sawtooth wire between two teeth.
  • the dimension of the groove width is already sufficient to hold the sawtooth wire firmly in the groove on the one hand and to enable a gap-free fastening on the other hand.
  • the groove is preferably about 3% narrower than the base of the bent sawtooth wire. This 3% corresponds approximately to the constriction of the foot in the area between two saw teeth after the saw tooth wire has been bent.
  • the groove is designed as a dovetail groove with undercut edges, the groove edges press particularly well against the base of the sawtooth wire.
  • the upper edges of the groove practically act as sealing lips.
  • the width of the groove base is about 2% wider than the clear distance between the groove edges.
  • the groove depth can be kept relatively small. To achieve good concentricity, it is advantageous if the groove depth is approximately 1/5 to 1/2 of the groove width. In this way, a secure, gap-free fastening of the sawtooth wire can be achieved in a favorable manner and ensure that the sawtooth wire rests with its foot at all points on the groove base, so that a perfect concentricity is achieved.
  • the groove depth is approximately 1/3 of the groove width.
  • the height and the width of the base of the sawtooth wire is preferably approximately 1 mm each.
  • FIG 1 shows an opening roller 1 according to the invention for an open-end spinning machine in its vicinity.
  • a housing 2 To the environment is a housing 2, in which transport channels for the sliver 3 to be dissolved are provided.
  • a feed roller 4 and a feed table 5 are provided at the inlet to the opening roller 1.
  • the dining table 5 is adjustable in the direction of the opening roller and can be moved up to the opening roller 1 very close.
  • the opening roller 1 is shown separately in FIG. 2. It can be seen that the opening roller 1 consists of a roller body 6 and a sawtooth wire fitting 7 applied to the outer surface. The sawtooth wire 7 is helically drawn onto the outer surface 8 of the roller body 6.
  • the groove width a is at least at the upper edge 11 of the groove 9 narrower than the foot width b of the sawtooth wire 7 before it is inserted into the groove.
  • FIG. 4 There is a piece of saw tooth wire shown in the bent state.
  • the view in Fig. 4 is exaggerated for clarity. It can be seen that when the sawtooth wire 7 is bent, it does not bend uniformly in the region of its foot 10, but that the sawtooth wire 7 is bent essentially exclusively between the individual teeth 12. As a result, the underside of the foot 10 is bent in the manner of a polygon. This effect is also called the polygon effect.
  • a gap 14 with a gap height c is formed below the tooth gaps 13.
  • the upper edge 11 of the groove before inserting the sawtooth wire 7 is approximately as wide as the constrictions described above. This means that the groove width a on its upper edge corresponds to the dimension d for the constriction in the region of a tooth gap 13.
  • the groove 9 is about 3% narrower at the upper edge 11 than the foot 10 of the still unbent sawtooth wire 7. Since there is practically no bending of the foot 10 in the area of the teeth 12, this means that the dimension a for the groove width is about 3% is smaller than dimension b for the foot width in the area of a tooth 12.
  • the upper edges 11 of the groove 9 are undercut, so that the groove 9 takes the form of a dovetail groove.
  • the width e of the groove base is approximately 3% larger than the clear distance between the upper groove edges 11. This means that the dimension e is approximately 3% larger than the dimension a and therefore approximately corresponds to the dimension b.
  • the sawtooth wire 7 used in this exemplary embodiment has a foot width b of approximately 0.96 mm in the unbent state.
  • the foot 10 is approximately square in cross section.
  • the dimension for the constriction d in the area of a tooth gap 13 is 0.94 mm.
  • the depth f of the groove 9 will preferably be selected in the range from about 1/5 to one half of the groove width a. In the exemplary embodiment shown here, the groove depth f is approximately 0.3 mm.
  • the groove width a in the area of its upper edge 11 is 0.94 mm.
  • the gap height c for the sawtooth wire used here is approximately 0.2 mm.
  • the foot 10 presses the material of the upper groove edges 11 aside in the region of the teeth 12.
  • the upper groove edges adapt laterally to the foot 10 of the sawtooth wire 7.
  • the upper groove edge 11 is not displaced in the region of the tooth gaps 13, that is to say the constrictions caused by the bending. Rather, the sawtooth wire 7 fits into the groove. Since the gap height c is less than the groove depth f, the sawtooth wire is also held in the groove 9 without a gap in the region of the constrictions.
  • the individual teeth 12 are each supported at the same points in the groove base, so that each tooth has the same height.
  • the opening roller designed in this way makes it possible for the dining table to be moved 5 to, 0.1 mm or even closer. At the same time, however, this opening roller can also process particularly problematic fibers, such as polyester fibers under 3 denier, without fear of the fibers getting caught in the region 9 or the foot 10 of the sawtooth wire 7.
  • a dovetail groove is provided as a groove in the exemplary embodiment described above, it is also possible to form the groove with straight edges, which also simplifies the production of the grooves.
  • the roller body 6 consists of aluminum or an aluminum alloy.
  • any remaining pockets between the constrictions of the base of the sawtooth wire and the groove edges, which can be traced back to manufacturing tolerances of the sawtooth wire, can advantageously be closed by spraying on an insulating varnish known from electrical engineering.
  • This varnish which e.g. Available under the name "Plastik 70” from the company Mais-Chemie in Rastatt, it crawls into the pockets and hardens there.
EP87117690A 1987-10-12 1987-11-30 Cylindre peigneur pour des machines de filature à bout libre Withdrawn EP0311713A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8713692U DE8713692U1 (fr) 1987-10-12 1987-10-12
DE8713692U 1987-10-12

Publications (1)

Publication Number Publication Date
EP0311713A1 true EP0311713A1 (fr) 1989-04-19

Family

ID=6813006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117690A Withdrawn EP0311713A1 (fr) 1987-10-12 1987-11-30 Cylindre peigneur pour des machines de filature à bout libre

Country Status (5)

Country Link
US (1) US4862688A (fr)
EP (1) EP0311713A1 (fr)
JP (1) JPH01132839A (fr)
CS (1) CS270595B2 (fr)
DE (1) DE8713692U1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3915022A1 (de) * 1989-05-08 1990-11-15 Hollingsworth Gmbh Aufloesewalze fuer offenend-spinnmaschine
DE4019151A1 (de) * 1990-06-15 1991-12-19 Truetzschler & Co Saegezahnwalze mit schraubenlinienfoermig verlaufender saegezahngarnitur
DE19708190A1 (de) * 1997-02-28 1998-09-03 Rieter Ingolstadt Spinnerei Auslösewalze für eine Offenend-Spinnmaschine
ES2200455T3 (es) * 1999-11-10 2004-03-01 Graf + Cie Ag Fleje con dentado de sierra.
DE102004054653A1 (de) * 2004-11-11 2006-05-18 Rieter Ingolstadt Spinnereimaschinenbau Ag Auflöseeinrichung mit verbesserter Kontur
CN101898684A (zh) * 2010-07-16 2010-12-01 山西中池联华科技开发有限公司 Led显示屏单元板灯珠梳理装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2024369A (en) * 1978-06-23 1980-01-09 Hollingsworth Gmbh Reclothable beater roll for open end spinning machines andmethod of making same
EP0013169A1 (fr) * 1978-12-26 1980-07-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Perfectionnement apporté au cylindre peigneur d'un métier de filature à bout libre
DE3321236A1 (de) * 1983-06-11 1984-12-13 Fritz 7347 Bad Überkingen Stahlecker Verfahren zum herstellen einer aufloesewalze und aufloesewalze fuer oe-spinnaggregate

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1510741A1 (de) * 1964-01-08 1971-07-01 Julius Meimberg Verfahren und Vorrichtung zum Verspinnen von Stapelfasern
CH505919A (de) * 1969-01-31 1971-04-15 Chr Burckhardt Fa Nadelwalze
CS161233B1 (fr) * 1970-12-23 1975-06-10
US4044427A (en) * 1976-05-21 1977-08-30 Rogers Corporation Comber roll
JPS5718447Y2 (fr) * 1979-11-20 1982-04-17
DE3007245C2 (de) * 1980-02-27 1982-08-12 Staedtler & Uhl, 8540 Schwabach Zahnbesatz für Walzen und Tragsegmente von Textilmaschinen
DE3438133A1 (de) * 1984-10-18 1986-04-30 Staedtler & Uhl, 8540 Schwabach Aufloesewalze fuer open-end spinnmaschinen
US4627131A (en) * 1985-07-11 1986-12-09 Kanai Juyo Kogyo Co., Ltd. Combing roller for an open-end spinning machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2024369A (en) * 1978-06-23 1980-01-09 Hollingsworth Gmbh Reclothable beater roll for open end spinning machines andmethod of making same
EP0013169A1 (fr) * 1978-12-26 1980-07-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Perfectionnement apporté au cylindre peigneur d'un métier de filature à bout libre
DE3321236A1 (de) * 1983-06-11 1984-12-13 Fritz 7347 Bad Überkingen Stahlecker Verfahren zum herstellen einer aufloesewalze und aufloesewalze fuer oe-spinnaggregate

Also Published As

Publication number Publication date
CS664288A2 (en) 1989-12-13
DE8713692U1 (fr) 1988-01-14
CS270595B2 (en) 1990-07-12
US4862688A (en) 1989-09-05
JPH01132839A (ja) 1989-05-25

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Inventor name: SCHMOLKE, KARL-HEINZ