EP0368060B1 - Zangenaggregat für eine Kämmaschine - Google Patents

Zangenaggregat für eine Kämmaschine Download PDF

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Publication number
EP0368060B1
EP0368060B1 EP89119486A EP89119486A EP0368060B1 EP 0368060 B1 EP0368060 B1 EP 0368060B1 EP 89119486 A EP89119486 A EP 89119486A EP 89119486 A EP89119486 A EP 89119486A EP 0368060 B1 EP0368060 B1 EP 0368060B1
Authority
EP
European Patent Office
Prior art keywords
nipper
plate
pliers
unit
fibre composite
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 - Lifetime
Application number
EP89119486A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0368060A1 (de
Inventor
Walter Ackeret
Gian-Carlo Dr. Mondini
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter 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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0368060A1 publication Critical patent/EP0368060A1/de
Application granted granted Critical
Publication of EP0368060B1 publication Critical patent/EP0368060B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/14—Drawing-off and delivery apparatus
    • D01G19/16—Nipper mechanisms

Definitions

  • the invention relates to a pair of pliers for a combing machine, with a pair of pliers, which has two side arms which can be fitted in the combing machine and a sub-pliers plate held by them, and with an upper plier, which has two arms which can be pivoted with respect to the sub-pliers and a top pliers plate which are held by these.
  • Such a pliers assembly e.g. from CH-PS 351 197, is moved in a conventional combing machine between a retracted position and an advanced position back and forth during a so-called comb play.
  • the pliers are closed in the retracted position, i.e. the front edge of the upper pliers plate is pressed against the front edge of the lower pliers plate in order to clamp a fiber beard, which is then combed out by a rotating circular comb.
  • the object of the invention is to reduce the mass of the pliers unit specified at the outset, so that with the pliers unit higher numbers of combs, e.g. around 360 per minute or around 400 per minute, can be achieved without undesirably large forces and undesirably strong vibrations.
  • the upper pliers plate and / or the lower pliers plate each consist of fiber composite material, which can be coated with metal in the region of the front edges of the plier plates, ie in the region of the clamping edges, in order to obtain sufficient wear resistance. It is also proposed to choose the modulus of elasticity of the fiber composite material between 10 and 80 kN./mm 2 , which is measured in a direction in which at least some of the fibers run in the material. With a corresponding clamping force, elastic deflection is thereby achieved at the front edge of the lower and / or upper pliers plate. This enables the clamping force to be applied evenly.
  • the pliers plates can have essentially the same dimensions as the known pliers plates made only of steel.
  • the pliers plates can be considerably lighter. Nevertheless, the required strength of the pliers plates can be easily achieved with suitable fiber composite materials, in particular carbon fiber or aramid or para-aramid fiber composite materials.
  • pliers drive arms that can be pivoted back and forth can be provided, to which the side arms of the lower pliers are articulated.
  • These tong drive arms can expediently also consist at least partially of fiber composite materials.
  • the pliers unit shown in FIGS. 1 and 2 has a pair of pliers with a pair of pliers frame, which consists of two side arms 2 and 3 connected by a crossbar 1.
  • the crossbar 3 carries a forwardly extending Lower clamp plate 5.
  • an upper clamp plate 6 interacts, which is carried by two arms 8 and 9, which are connected to the clamp frame 1, 2, 3 so as to be pivotable about an axis A.
  • the parts described above i.e. the crossbar 1, the side arms 2 and 3, the lower pliers plate 5, the upper pliers plate 6 and the pivotable arms 8 and 9, are made of fiber composite material.
  • the fiber composite material is a plastic reinforced with fibers, in particular carbon fibers or aramid or para-aramid fibers ("KEVLAR" fibers), which has a high strength.
  • the crossbar 1 and the side arms 2 and 3 are provided with stiffening ribs 1a or 2a or 3a.
  • the pivotable arms 8 and 9 of the upper tongs 6, 8, 9 can have similar stiffening ribs (not shown).
  • a fiber composite material with an elastic modulus of about 25 kN / mm 2 can be used for the lower pliers plate 5 and / or for the upper pliers plate 6, measured in a direction in which at least some of the reinforcing fibers run in the material.
  • the reinforcing fibers expediently run in the direction from front to back, ie perpendicular to the front edges (clamping edges) of the pliers plates.
  • a pliers plate made of such a fiber composite material with a relatively low coefficient of elasticity is then elastically bent during operation by the clamping force with which the front edges of the pliers plates 5 and 6 are pressed against one another when the pliers unit is closed, for example about 12 to 15 N / cm, for example about 0.5 mm Deflection at the front edge.
  • the noise development when the pliers unit is closed can be reduced, since part of the mechanical energy is temporarily stored in the elastic deformation when the pliers unit is closed and is only released again when the pliers unit is opened becomes.
  • the collet i.e. the sub-clamp frame 1, 2, 3 and the sub-clamp plate 5, formed in one piece.
  • the upper tongs 6, 8, 9 are also formed in one piece.
  • 3 and 4 again has a pair of pliers with a pair of pliers, which consists of two side arms 12 and 13 connected by a crossbar 11.
  • a forward pliers plate 15 On the crosspiece 11, e.g. fastened with screws 14, a forward pliers plate 15.
  • An upper clamp plate 16 is e.g. with screws 17, attached to two arms 18 and 19 which are pivotally connected to the pliers frame 11, 12, 13 about an axis A.
  • the pliers plate 15 and the upper pliers plate 16 are made of fiber composite material, as described for the embodiment according to FIGS. 1 and 2, while the pliers frame 11, 12, 13 and, if desired, the pivotable arms 18 and 19 can be made of metal.
  • the front edges or clamping edges of the two pliers plates 15 and 16 are shaped in the usual manner so that they engage with one another when the pliers unit is closed and bend down a clamped fiber beard.
  • the required shapes of the front edges can be produced in the pliers plates 15 and 16 made of fiber composite material by machining, in particular by milling. However, it is better, in particular in the case of the pliers plate 15, if the recess required at the front edge is obtained by embossing or pressing in during the manufacture of the plate before complete curing of the fiber composite material. So cutting through Reinforcing fibers of the fiber composite material, which would lead to an additional impairment of the strength in the area of the stiffening, are avoided.
  • the lower pliers plate 15 and the upper pliers plate 16 can be coated with metal (not shown) in the region of their front edges or clamping edges in order to increase the wear resistance.
  • metal not shown
  • FIG. 5 shows the same parts as FIG. 4 with the exception that the pliers plates 15 and 16 are replaced by assembled pliers plates 25 and 26, respectively.
  • the pliers plate 25 consists of a support plate 25a made of fiber composite material, which is fastened to the crossbar 11, and of a support plate 26a made of fiber composite material, which is fastened to the arms 18 and 19 (FIG. 3), and of a clamping strip 26b made of steel, the attached to the support plate 26a, for example is stuck.
  • the tongs drive arms 27 sit in a conventional manner on a tongs shaft 28 and are pivoted back and forth by the latter in order to move the lower tongs back and forth during operation of the combing machine.
  • These reciprocating tong drive arms can also be made of fiber composite material, at least partially, for example with the exception of bearing bushes.
  • FIGS. 6 and 7. differs from the already described example according to FIG. 1 in that the lower jaw is not formed with a lower jaw frame as a whole from fiber composite material, but here side arms 2, 3 are made of a metallic Material, e.g. made of die-cast aluminum.
  • the crosspiece 20, which connects the two side arms 2, 3 to each other via an adhesive connection K, is made of fiber composite material or a composite material.
  • the cross bar 20 is provided with joined, composite material U-shaped profiles 21, which in turn are combined with one another via a further composite material layer 22 to form a one-piece cross bar 20.
  • This combination of composite layers is necessary for production reasons, since such a honeycomb structure cannot be easily produced with only one layer.
  • the pliers plate 23 is fastened to the crossbar 20 via an adhesive connection K.
  • This material combination of the side arms 2, 3 and the crossbar 20 makes it possible to design the bearing points for the force application into the lower jaw with a controllable technology so that it corresponds to the strength and functional requirements.
  • the use of an appropriate crossbar made of composite material considerably reduces the weight of the collet, which gives the advantages already described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Clamps And Clips (AREA)
EP89119486A 1988-11-04 1989-10-20 Zangenaggregat für eine Kämmaschine Expired - Lifetime EP0368060B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4101/88 1988-11-04
CH4101/88A CH679159A5 (enrdf_load_stackoverflow) 1988-11-04 1988-11-04

Publications (2)

Publication Number Publication Date
EP0368060A1 EP0368060A1 (de) 1990-05-16
EP0368060B1 true EP0368060B1 (de) 1997-03-12

Family

ID=4269845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119486A Expired - Lifetime EP0368060B1 (de) 1988-11-04 1989-10-20 Zangenaggregat für eine Kämmaschine

Country Status (9)

Country Link
US (1) US4993122A (enrdf_load_stackoverflow)
EP (1) EP0368060B1 (enrdf_load_stackoverflow)
JP (1) JPH02169731A (enrdf_load_stackoverflow)
KR (1) KR900008079A (enrdf_load_stackoverflow)
CN (1) CN1013691B (enrdf_load_stackoverflow)
CH (1) CH679159A5 (enrdf_load_stackoverflow)
DD (1) DD284916A5 (enrdf_load_stackoverflow)
DE (1) DE58909787D1 (enrdf_load_stackoverflow)
PT (1) PT91965B (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681085A5 (enrdf_load_stackoverflow) * 1990-03-23 1993-01-15 Rieter Ag Maschf
CH682752A5 (de) * 1991-03-15 1993-11-15 Rieter Ag Maschf Zangenaggregat für eine Kämmaschine.
CH685163A5 (de) * 1992-02-27 1995-04-13 Rieter Ag Maschf Oberzangenmesser für eine Kämmaschine.
FR2742738B1 (fr) * 1995-12-23 1998-06-26 Soditech Sa Pince de manutention autoserrante
EP1449944B1 (de) * 2003-02-21 2008-04-02 Maschinenfabrik Rieter Ag Zangenaggregat für eine Kämmaschine
ITMI20081097A1 (it) * 2007-06-29 2008-12-30 Truetzschler Gmbh & Co Kg Apparecchiatura per la cernita di fibre o la selezione di fibre di un fascio di fibre comprendente fibre tessili, specialmente per la pettinatura
US9990906B2 (en) * 2014-03-03 2018-06-05 D'addario & Company, Inc. Musical string with high modulus fiber winding
CH709900A2 (de) * 2014-07-21 2016-01-29 Rieter Ag Maschf Kämmmaschine.
US20230146323A1 (en) * 2021-11-05 2023-05-11 Maschinenfabrik Rieter Ag Nipper unit for a combing machine
CH719122A1 (de) * 2021-11-05 2023-05-15 Rieter Ag Maschf Zangenaggregat für eine Kämmmaschine.

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1889435A (en) * 1929-06-21 1932-11-29 Whitin Machine Works Top comb motion
US1905336A (en) * 1929-10-12 1933-04-25 Frederick C Blanchard Machines for combing textile fibers
DE1179138B (de) * 1958-05-12 1964-10-01 Whitin Machine Works Kaemmaschine
FR1203890A (fr) * 1958-07-17 1960-01-21 Alsacienne Constr Meca Peigneuse rectiligne à grand rendement
US3103041A (en) * 1960-05-18 1963-09-10 Whitin Machine Works Fringe control blade for combing machine
CH525352A (de) * 1968-09-13 1972-07-15 Contraves Ag Stab mit hoher Biegesteifigkeit und Verwendung desselben
JPS51216B1 (enrdf_load_stackoverflow) * 1970-12-30 1976-01-06
US3960182A (en) * 1975-04-07 1976-06-01 Staeubli, Ltd. Heddles for weaving machines having heddle frame bars for several heddles, which bars are moved by a shed-forming device
US4130141A (en) * 1977-11-23 1978-12-19 Page Belting Company Picker stick
US4476900A (en) * 1982-01-27 1984-10-16 Steel Heddle Manufacturing Company Composite heddle rod
IT8353444U1 (it) * 1983-06-09 1984-12-09 Santandrea Novara Off Mec E Fonderie S P A Macchina pettinatrice per fibre tessili.
JPS6215330A (ja) * 1985-07-13 1987-01-23 Hara Shiyokuki Seisakusho:Kk コ−マのニツパフレ−ムの揺動方法および装置
DE3800281A1 (de) * 1987-03-05 1988-09-15 Sulzer Ag Webmaschine mit projektilfangbremse
US4790357A (en) * 1987-08-06 1988-12-13 Steel Heddle Mfg., Inc. Harness frame slat and heddle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Saechtlin, Hansjürgen, "Kunststoff-Taschenbuch", 20. Ausgabe, 1977, Carl Hanser Verlag München, Wien, Seiten 56- 59 "Verarbeiten und Anwenden kohlenstoffverstärkter Kunststoffe", herausgegeben vom Verein Deutscher Ingenieure VDI-Gesellschaft Kunststofftechnik, 1981, VDI-Verlag GmbH, Düsseldorf, Seiten 1 - 3 *

Also Published As

Publication number Publication date
DD284916A5 (de) 1990-11-28
PT91965A (pt) 1990-05-31
US4993122A (en) 1991-02-19
CN1042384A (zh) 1990-05-23
JPH02169731A (ja) 1990-06-29
CH679159A5 (enrdf_load_stackoverflow) 1991-12-31
PT91965B (pt) 1995-08-09
CN1013691B (zh) 1991-08-28
EP0368060A1 (de) 1990-05-16
DE58909787D1 (de) 1997-04-17
KR900008079A (ko) 1990-06-02

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