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EP0701013A1 - Appareil de commande dans une machine de peignage - Google Patents

Appareil de commande dans une machine de peignage Download PDF

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Publication number
EP0701013A1
EP0701013A1 EP95113458A EP95113458A EP0701013A1 EP 0701013 A1 EP0701013 A1 EP 0701013A1 EP 95113458 A EP95113458 A EP 95113458A EP 95113458 A EP95113458 A EP 95113458A EP 0701013 A1 EP0701013 A1 EP 0701013A1
Authority
EP
European Patent Office
Prior art keywords
crank
gear
coupling
drive device
shaft
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Withdrawn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
EP95113458A
Other languages
German (de)
English (en)
Inventor
Andreas Joerg
David Broger
Detlef Dr. Guenzel
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 EP0701013A1 publication Critical patent/EP0701013A1/fr
Withdrawn legal-status Critical Current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
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/26—Driving arrangements

Definitions

  • the invention relates to a drive device in a combing machine, for moving a forceps unit back and forth and for rotating a tear-off cylinder drive shaft with a mit step movement, with at least one crank mechanism.
  • a tongs unit In combing machines, a tongs unit is moved back and forth between a retracted, closed position and an advanced, open position. In the retracted position, a fiber beard clamped in the pliers unit is combed out by a rotating circular comb. The pliers assembly is then moved to the advanced position and opened while tear-off cylinders are rotated in the reverse direction by the tear-off cylinder drive shaft so that they feed back an end portion of the combed nonwoven previously formed. The combed fiber beard located in the pliers unit lies on the fed-back nonwoven end section and is then pulled together with this into the tear-off cylinder, for which purpose the tear-off cylinder is rotated in a forward direction by the tear-off cylinder drive shaft. The forward rotation is greater than the backward rotation before, so that the fiber whiskers fed one after the other from the pliers aggregate lie on one another in a scale-like manner. The tear-off cylinder drive shaft must therefore be rotated with a mit step movement during
  • the object of the invention is to provide a drive device of the type specified at the outset, which is simpler and can be produced cheaper than known drive devices.
  • the drive device is a wheel coupling gear which has a drivable crank, a coupling articulated on the crank and on a rocker arm or on a second crank, and a coupling which is connected to the coupling in a rotationally fixed manner, contains toothing centered with respect to one of the articulation points of the coupling, which drives a gearwheel which is connected in a rotationally fixed manner to the tear-off cylinder drive shaft.
  • the drive device according to the invention can not only be constructed more simply than known drive devices, but also with fewer elements and less moved mass and with less play.
  • the tear-off cylinders it is desirable for the tear-off cylinders to rotate in the reverse direction quickly, for example within about 1/5 of a comb play, and for the tear-off cylinders to rotate only slightly or not at all for about the same length of time.
  • a comb play is the total time for a reciprocating movement of the pliers unit or for one rotation of the circular comb.
  • the drivable crank of the wheel coupling gear can be driven non-uniformly within a comb play.
  • the device for driving this crank could include elliptical gears.
  • a double crank gear is arranged for driving said crank, with a first crank which is seated on a shaft which can be driven uniformly, and with a second crank which is with said drive crank is rotatably connected (or could coincide with this).
  • Fig. 1 shows a combing head schematically two tear-off cylinders 11 and 12, a circular comb shaft 13 rotatable continuously at a constant speed and a reciprocating pincer shaft 14, all of which are mounted in a machine frame, not shown.
  • a lower jaw frame 15 is articulated at its rear end to tong arms 16 seated on the tong shaft 14 and at its front end to front supports 17 which can be pivoted about the axis of the round comb shaft 13.
  • the lower jaw frame 15 carries a lower jaw plate 18.
  • An upper jaw plate 19 cooperating with this is supported by upper jaw arms 20 which are pivotally connected to the lower jaw frame 15 about an axis 21.
  • the combed-out fiber beard on the front edge of the cotton lying in the pliers aggregate lies on the fleece end section fed back in this way.
  • the tear-off cylinders 11, 12 are then rotated in the forward direction in order to move the fleece end section together with the combed-out fiber beard lying thereon forward and to tear off the fiber beard from the wadding W.
  • the pliers shaft 14 is rotated back and forth in the exemplary embodiment described here.
  • the drive device contains a wheel coupling gear with a crank 23 which can be driven in the same direction and which is rotatably mounted on a tear-off cylinder drive shaft 24, a coupling 26 articulated on the crank 23 and on a rocker 25 and a toothing in the form connected to the coupling 26 in a rotationally fixed manner a gear 27 which is centered on the crank 23 with respect to the articulation point of the coupling 26.
  • a gear 29 is non-rotatable connected.
  • An intermediate gear 30, which is also rotatably mounted on the crank 23, meshes with the gear 27 on the one hand and with the gear 29 on the other hand.
  • the tear-off cylinder drive shaft 24 carries a gear wheel 31 (FIG. 2) which drives the tear-off cylinders 11 and 12 via gear wheels 32 and 33, respectively, which are seated thereon.
  • crank 23 is rotated around the shaft 24 at a non-uniform speed. This can happen, for example, in such a way that the crank 23 is driven from a shaft rotating at a uniform speed, for example from the round comb shaft 13, via elliptical gearwheels.
  • a double crank gear is arranged for rotating the crank 23 at a non-uniform speed.
  • This double crank transmission contains a crank 34 which is seated on a shaft 35 which can be driven uniformly, and a coupling 36 which is articulated on this crank 34 and on the crank 23.
  • the coupling 36 could, however, also be articulated on a second crank which is separate from the crank 23 but is non-rotatably connected to it.
  • the shaft 35 carries a gearwheel 37 (FIG. 2) which is driven by a gearwheel 38 on a drive shaft 39 .
  • the drive shaft 39 is rotated uniformly during operation by a motor of the combing machine, not shown.
  • the drive shaft 39 also carries a gear 40 which meshes with a gear 41 seated on the round comb shaft 13 and thus rotates the round comb shaft 13.
  • FIGS. 5 to 7 show diagrams of a wheel coupling gear with an upstream double crank gear in three different positions during one revolution of the cranks 23 and 34.
  • the two gears essentially correspond to those already described, with the only difference that the gears 27 and 29 do not have the intermediate gear 30 according to FIGS 3 and 4 are coupled together, but instead via a toothed belt or another traction means 30.1.
  • the shaft 35 with the crank 34 is rotated uniformly in the counterclockwise direction according to the drawings.
  • the coupling 36 pulls the joint 42 between the crank 23 and the coupling 26 of the wheel coupling gear downwards.
  • the coupling 26 and with it the gear 27 pivot clockwise.
  • the toothed wheel 29 is also rotated clockwise via the toothed belt 30.1, so that the tear-off cylinder drive shaft 24 rotates the tear-off cylinders 11 and 12 counterclockwise via the toothed wheels 31, 32, 33 (FIG. 2), that is to say in the forward direction.
  • Fig. 8 the rotation of the tear-off cylinders 11 and 12, measured on the circumference thereof, is shown graphically as a function of the angle of rotation of the uniformly rotating crank 34 with a solid curve.
  • the drive device contains a rocking crank mechanism with a rocker 43 seated on the tong shaft 14, to which a coupling 44 is articulated, for pivoting the tong shaft 14 back and forth (FIGS. 2, 3, 4).
  • the other end of the coupling 44 is articulated on a crank, which in the exemplary embodiment is formed by the gearwheel 41 seated on the round comb shaft 13 and a crank pin 45 arranged on this gearwheel.
  • the coupling 44 can also be articulated on a crank other than the crank 41, 45, for example on a crank rotating at a non-uniform speed, if a different course of the tong movement than the course shown in FIG. 8 with the broken line is desired.
  • a crank rotating at a non-uniform speed is present in the drive device described, namely the crank 23.
  • the coupling 44 can thus be articulated on the crank 23 or on a separate crank which is connected to the crank 23 in a rotationally fixed manner be.
  • a separate double crank gear similar to the double crank gear 34, 35, 36, 23, for driving the crank to which the coupling 44 of the oscillating crank gear 43, 44, 45 is articulated.
  • FIG. 9 shows a schematic of another wheel coupling gear with an upstream double crank gear for rotating the tear-off cylinder drive shaft 24.
  • the wheel coupling gear shown in FIG. 9 contains a crank 23.1 which can be driven in the same direction and is rotatably mounted on the tear-off cylinder drive shaft 24 on the crank 23.1 and on a second crank 25.1 coupling 26.1 and a toothing connected in a rotationally fixed manner to the coupling 26.1 in the form of a gear sector 27.1.
  • the toothing is centered on the crank 23.1 with respect to the articulation point 42 of the coupling 26.1, and it meshes with a toothed wheel 29.1 which is connected in a rotationally fixed manner to the tear-off cylinder drive shaft 24.
  • a double crank gear is arranged for rotating the crank 23.2 and contains a crank 34.1, a coupling 36.1 and a crank 23.1.
  • the crank 34.1 sits on a uniformly drivable shaft 35.1, and the crank 23.2 is rotatably connected to the drivable crank 23.1 of the wheel coupling gear.
  • a pilgrim step movement of the tear-off cylinders can be generated in a combing machine in a simple manner. If the drivable crank 23 or 23.1 of the wheel coupling gear is rotated at a non-uniform speed, the mit step movement of the tear-off cylinder may have a course, as is shown by the solid curve in FIG. 8.
  • the axis 46 about which the rocker arm 25 or the second crank 25 the axis of rotation of the drivable crank 23 or 23.1, ie the shaft 24, adjustable transversely to the direction of these axes, e.g. in the positions designated in Fig. 3 or Fig. 9 with 46.1 and 46.2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP95113458A 1994-09-07 1995-08-28 Appareil de commande dans une machine de peignage Withdrawn EP0701013A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2733/94 1994-09-07
CH273394 1994-09-07

Publications (1)

Publication Number Publication Date
EP0701013A1 true EP0701013A1 (fr) 1996-03-13

Family

ID=4240389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113458A Withdrawn EP0701013A1 (fr) 1994-09-07 1995-08-28 Appareil de commande dans une machine de peignage

Country Status (1)

Country Link
EP (1) EP0701013A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0764730A1 (fr) * 1995-09-20 1997-03-26 SANT'ANDREA NOVARA S.p.A. Procédé et machine de peignage pour peigner les fibres textiles
EP2108722A1 (fr) * 2008-04-08 2009-10-14 Maschinenfabrik Rieter Ag Entraînement du système de pinces alimentaires d'une peigneuse
CN102758276A (zh) * 2012-08-09 2012-10-31 马驰 适用于精梳机锡林分离罗拉传动部件中的双曲柄机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289982C (fr) *
GB171826A (en) * 1920-09-15 1921-12-01 Paul Auguste Helmbold An improved driving gear for the drawing-off roller of combing machines of the heilmann type
CH465455A (de) * 1965-10-22 1968-11-15 T M M Researcg Ltd Abreisswalzen-Antrieb an Kämmaschinen
EP0418472A1 (fr) * 1989-09-08 1991-03-27 Kabushiki Kaisha Hara Shokki Seisakusho Mécanisme d'entraînement d'un cylindre arracheur dans une peigneuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289982C (fr) *
GB171826A (en) * 1920-09-15 1921-12-01 Paul Auguste Helmbold An improved driving gear for the drawing-off roller of combing machines of the heilmann type
CH465455A (de) * 1965-10-22 1968-11-15 T M M Researcg Ltd Abreisswalzen-Antrieb an Kämmaschinen
EP0418472A1 (fr) * 1989-09-08 1991-03-27 Kabushiki Kaisha Hara Shokki Seisakusho Mécanisme d'entraînement d'un cylindre arracheur dans une peigneuse

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0764730A1 (fr) * 1995-09-20 1997-03-26 SANT'ANDREA NOVARA S.p.A. Procédé et machine de peignage pour peigner les fibres textiles
EP2108722A1 (fr) * 2008-04-08 2009-10-14 Maschinenfabrik Rieter Ag Entraînement du système de pinces alimentaires d'une peigneuse
CN101554716B (zh) * 2008-04-08 2012-12-12 里特机械公司 用于夹钳组件的驱动装置
CN102758276A (zh) * 2012-08-09 2012-10-31 马驰 适用于精梳机锡林分离罗拉传动部件中的双曲柄机构

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