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EP0368060A1 - Mécanisme de pinces pour machine de peignage - Google Patents

Mécanisme de pinces pour machine de peignage Download PDF

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Publication number
EP0368060A1
EP0368060A1 EP89119486A EP89119486A EP0368060A1 EP 0368060 A1 EP0368060 A1 EP 0368060A1 EP 89119486 A EP89119486 A EP 89119486A EP 89119486 A EP89119486 A EP 89119486A EP 0368060 A1 EP0368060 A1 EP 0368060A1
Authority
EP
European Patent Office
Prior art keywords
pliers
composite material
fiber composite
unit according
plate
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.)
Granted
Application number
EP89119486A
Other languages
German (de)
English (en)
Other versions
EP0368060B1 (fr
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/fr
Application granted granted Critical
Publication of EP0368060B1 publication Critical patent/EP0368060B1/fr
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 pliers plate held by them, and with a top plier, which has two arms which can be pivoted with respect to the pliers and a top pliers plate held by these.
  • Such a forceps assembly is moved back and forth in a conventional combing machine between a retracted position and an advanced position 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 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 against 400 per minute, can be achieved without undesirably large forces and undesirably strong vibrations.
  • the pliers assembly according to the invention is characterized in that at least parts of the pliers assembly consist of fiber composite material.
  • the upper pliers plate and / or the lower pliers plate can expediently consist at least partially of fiber composite material.
  • the pliers plates can have essentially the same dimensions as the known pliers plates made only of steel. However, since the density of the fiber composite material is significantly lower than that 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. To in the area of the front edges of the pliers plates, i.e. in the area of the clamping edges to ensure sufficient wear resistance, the pliers plates can be coated with metal in this area. Instead, it is also possible to assemble the pliers plates each from a support plate made of fiber composite material and a steel clamping strip attached to the support plate.
  • pliers drive arms that can be pivoted back and forth can be provided, to which the side arms of the lower tongs are articulated.
  • These tong drive arms can expediently consist at least partially of fiber composite material.
  • the side arms In the area of force application, for example at the bearing points of the side arms of the lower jaws, it is very difficult to form a reasonable and inexpensive design with composite material, especially since mechanical reworking is usually still required at these points. It is therefore also proposed to manufacture the side arms from a metallic material, for example from die-cast aluminum, which are connected to one another via an adhesive connection via a crossbar made of composite material. For longitudinal and transverse stabilization and to increase the torsional rigidity of the cross connection, it is proposed to produce the cross bar from profiles made of fiber composite material, these profiles being connected to one another via a further fiber composite material layer to form a compact unit. This will make a made of fiber composite material with ribs provided with ribs.
  • the side arms are advantageously connected to the crossbar via an adhesive point.
  • the pliers assembly shown in FIGS. 1 and 2 has a pair of pliers with a pair of pliers, which consists of two side arms 2 and 3 connected by a crossbar 1.
  • the crossbar 3 carries a forward-extending pliers plate 5.
  • an upper-pliers plate 6 interacts, which is supported by two arms 8 and 9, which are pivotally connected to the pliers frame 1, 2, 3 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 swiveling arms 8 and 9 the upper pliers 6, 8, 9 can have similar stiffening ribs (not shown).
  • the fiber composites can have a high modulus of elasticity comparable to that of steel, e.g. about 200 kN / mm2, measured in a direction in which at least some of the fibers run in the material.
  • a fiber composite material with a significantly lower modulus of elasticity for the lower pliers plate 5 and / or for the upper pliers plate 6, e.g. with a modulus of elasticity of about 25 kN / mm2, measured again 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, i.e. 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 in operation by the clamping force with which the front edges of the pliers plates 5 and 6 are pressed against each other when the pliers unit is closed, e.g. about 12 to 15 N / cm, elastically bent, e.g. about 0.5 mm deflection at the front edge.
  • the development of noise 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.
  • the collet ie the collet frame 1, 2, 3 and the collet plate 5 is 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 to one another by a crosspiece 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 top 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 way so that they engage in 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 produced by embossing or pressing in during the disassembly of the plate, before the fiber composite material has completely hardened. In this way, severing of reinforcing fibers of the fiber composite material, which would lead to an additional impairment of the strength in the area of the stiffening, can be 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 fastened to the support plate 25a, e.g. glued, terminal block 25b made of steel.
  • the upper pliers plate 26 consists of a fiber composite support plate 26a attached to the arms 18 and 19 (Fig. 3) and a steel clamping bar 26b attached to the support plate 26a, e.g. stuck.
  • the tongs drive arms 27 sit in the usual way 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.
  • the reciprocating pincer shaft 28 can also consist of fiber composite material.
  • 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, eg used from an aluminum die casting.
  • the crosspiece 20, which connects the two side arms 2, 3 but each with an adhesive connection K, is made of fiber composite material or a composite material.
  • the cross bar 20 is provided with joined together U-shaped profiles 21 made of composite material, 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 required in production, 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 combination of materials from the side arms 2, 3 and the crosspiece 20 makes it possible to design the bearing points for the introduction of force into the collet with a controllable technology in such a way 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 Mécanisme de pinces pour machine de peignage Expired - Lifetime EP0368060B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=4269845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119486A Expired - Lifetime EP0368060B1 (fr) 1988-11-04 1989-10-20 Mécanisme de pinces pour machine de peignage

Country Status (9)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016677A1 (fr) * 1991-03-15 1992-10-01 Maschinenfabrik Rieter Ag Unite a pince pour une peigneuse
EP0558441A1 (fr) * 1992-02-27 1993-09-01 Maschinenfabrik Rieter Ag Machoire supérieure pour une machine de peignage
EP4177386A1 (fr) * 2021-11-05 2023-05-10 Maschinenfabrik Rieter AG Unité pince pour une peigneuse

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681085A5 (fr) * 1990-03-23 1993-01-15 Rieter Ag Maschf
FR2742738B1 (fr) * 1995-12-23 1998-06-26 Soditech Sa Pince de manutention autoserrante
EP1449944B1 (fr) * 2003-02-21 2008-04-02 Maschinenfabrik Rieter Ag Appareil de serrage pour une peigneuse
ITMI20081098A1 (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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1203890A (fr) * 1958-07-17 1960-01-21 Alsacienne Constr Meca Peigneuse rectiligne à grand rendement
DE1179138B (de) * 1958-05-12 1964-10-01 Whitin Machine Works Kaemmaschine
GB2141151A (en) * 1983-06-09 1984-12-12 Sant Andrea Novara Officine Combing machine for textile fibres

Family Cites Families (11)

* 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
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 (fr) * 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
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB2141151A (en) * 1983-06-09 1984-12-12 Sant Andrea Novara Officine Combing machine for textile fibres

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016677A1 (fr) * 1991-03-15 1992-10-01 Maschinenfabrik Rieter Ag Unite a pince pour une peigneuse
EP0558441A1 (fr) * 1992-02-27 1993-09-01 Maschinenfabrik Rieter Ag Machoire supérieure pour une machine de peignage
EP4177386A1 (fr) * 2021-11-05 2023-05-10 Maschinenfabrik Rieter AG Unité pince pour une peigneuse
CH719122A1 (de) * 2021-11-05 2023-05-15 Rieter Ag Maschf Zangenaggregat für eine Kämmmaschine.

Also Published As

Publication number Publication date
DD284916A5 (de) 1990-11-28
PT91965A (pt) 1990-05-31
PT91965B (pt) 1995-08-09
KR900008079A (ko) 1990-06-02
CH679159A5 (fr) 1991-12-31
US4993122A (en) 1991-02-19
EP0368060B1 (fr) 1997-03-12
CN1013691B (zh) 1991-08-28
CN1042384A (zh) 1990-05-23
DE58909787D1 (de) 1997-04-17
JPH02169731A (ja) 1990-06-29

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