US3584346A - Control system for the drive of detaching rollers in textile combing machines - Google Patents

Control system for the drive of detaching rollers in textile combing machines Download PDF

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Publication number
US3584346A
US3584346A US761720A US3584346DA US3584346A US 3584346 A US3584346 A US 3584346A US 761720 A US761720 A US 761720A US 3584346D A US3584346D A US 3584346DA US 3584346 A US3584346 A US 3584346A
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United States
Prior art keywords
movement
point
drive
detaching rollers
eccentric
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Expired - Lifetime
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US761720A
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English (en)
Inventor
Hansulrich Eichenberger
Peter Schwengeler
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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    • 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

  • This invention relates to a control system for the drive of the detaching rollers in textile combing machines.
  • a layer of fibers extending from a nipper assembly is combed out and pushed by the nipper as the nipper swings forwardly on opening to a detaching unit consisting of detaching rollers which convey the fibrous material forward to the next processing station.
  • the detaching rollers follow a socalled crawl-step movement, that is, the detaching rollers rotate two steps forwardly and one step backwardly. In rotating forwardly, these detaching rollers remove the layer of fibers which have been combed by a circular comb and extend from the nipper and advance the combed layer forwardly. On rotating backwardly, in timed sequence with a second combing cycle, the detaching rollers at first return part of the web removed in the first combing cycle so that the ends of the returned web are placed on the ends of the fibers from the following combed tuft.
  • the detaching rollers then reverse again and rotate forwardly to remove the second layer of fibers from the open nippers. This last movement corresponds to the detaching movement of the detaching rollers.
  • the newly detached web thus is overlapped on the returned web and the two webs become combined with one another under the pressure of the detaching rollers and the adhesion between the fibers of the webs.
  • the detaching rollers not only change direction twice during each combing cycle but also travel a shorter distance during return movement than during forward movement.
  • 1,133,288 dated July 12, 1962 consists of a controllable differential drive, of a knee-lever as a controlling or driving element for the differential drive, and of a crank-drive as an operating means for the knee-lever, in comparison with the previously known knee-lever drives, merely increases the standstill time of the detaching rollers, through the buckling of the knee-lever, by a small amount beyond the stretchedout position of the knee-lever.
  • the movement of the detaching rollers is controlled through eccentrics and cam drives.
  • cam control is only suitable for combing speeds of up to approximately 200 combing cycles per minute. It is not possible to further substantially increase the combing cycles with cam discs because, if this were the case, the degree of wear on the cam track or guide roller would be excessive.
  • the invention provides a control system for the drive of detaching rollers in a combing machine in which an input shaft of a differential gear receives a uniform drive while another input shaft reecives a fast forward movement and a somewhat slower return movement with a stationary phase, so that an output shaft of the differential gear transmits the superimposed movements to the detaching rollers.
  • the forward and backward movement or reciprocation as well as the stationary phase imparted to the second input shaft can be produced very easily by means of an eccentric which is mounted for free rotation on the frame and which receives a non-uniform rotating movement by way of a pull rod fron a crank driven at a constant speed of rotation which is mounted offset relative to the center of rotation of the eccentric.
  • the eccentric is intended to carry a rocker which is pivotally supported by means of a supporting lever rotatably mounted on the frame and which transmits the movement imparted to it from the eccentric through a coupling such as a link to a control lever for the second input shaft of the differential gear.
  • FIG. 1 illustrates a partially broken elevational view of a control system according to the invention with a non uniformly driven eccentric and a differential gear;
  • FIG. 2 illustrates a view taken on line II-II of FIG. 1;
  • FIG. 3 diagrammatically illustrates the control system with the non-uniformly driven eccentric
  • FIG. 4 illustrates a view taken on line IVIV of FIG. 1 of an adjusting disc in which a pull-rod is slidably mounted in a slot;
  • FIG. 5 illustrates an adjusting disc in which a pin of a gear wheel is mounted in a slot.
  • a circular comb shaft 1 which rotates a circular comb as is known is mounted in .a machine frame 7 of a combing machine and is driven by a drive shaft 25 by way of a gear-wheel 26 mounted on the drive shaft 25 and a gearwheel 3 mounted on the circular comb shaft 1.
  • the drive shaft 25 receives its drive from a motor (not shown) via a pulley wheel 24.
  • an adjusting disc 4 is mounted on the circular comb shaft 1 and is connected with the gearwheel 3 through an adjusting screw *6.
  • a pull rod 10 is pivotally connected to the adjusting disc 4 at point E by means of a crank pin 5.
  • the pull rod 10 can be pivotally connected to the gearwheel 3 without the intermediary of the adjusting disc 4.
  • the pull rod 10 further engages an eccentric 8 freely mounted on the frame 7 at point D through a pin 9.
  • the rocker 11 is pivotally connected on the periphery by means of a pin 15 at point I to a supporting lever 14 which is rotatably mounted on a nipper drive spindle 22, while at the opposite point of its periphery, the rocker 11 is pivotally connected through a pin 12 to a link 16 at point G.
  • the link 16 is in turn pivotally connected through a pin 19 to a control lever 17 at point P.
  • the control lever 17 is fixed to a shaft 20 of a differential gear 21.
  • a link of the differential gear 21 receives a rotating movement in one end in the same direction and at a uniform speed from a gearwheel 27 mounted on the circular comb shaft 1 by way of an intermediate gear 28 mounted on a pin 29 fixed to the machine frame 7, and a link wheel 30 on the periphery of the link 30.
  • This rotational movement is imparted to a planet gear 32 in the differential gear 21 which is connected to the link 30' and which rolls around a sun gear 31 fixed on the shaft 20 of the differential gear.
  • the planet gear 32 is further connected with another planet gear 32 to impart rotary motion thereto.
  • This planet gear 32 meshes with and drives a sun gear 33 which is rotatably mounted on the shaft 20 of the differential gear and connected to a gearwheel 34.
  • the gearwheel 34 drives the detaching roller 23 through gearwheels 35, 36 and 37 mounted outside the differential gear 21.
  • the rocker 11 makes eccentric movements which are transmitted through the link 16 at point G to the control lever 17 at point F and hence to the shaft 20 of the differential gear 21.
  • the eccentric movement is then superimposed on the rotating movement generated from the circular comb shaft 1 via gear 28 and link 30 in one and the same direction and at a constant speed and transmitted from the differential gear 21 to the detaching rollers 23.
  • the point I at which the supporting lever 14 is pivoted, the pivot point G and the center C of the rocker 11 are initially situated on a straight connecting line V Since the rocker 11 is pivotal at point I about a point K at which the supporting lever 14 is pivotally connected to the nipper drive spindle 22, the center C of the rocker 11 follows a circular path K with its center at point B when the eccentric 8 moves. As a result, point G moves along an ellipse-like path K By virtue of the link 16, the movements of point G along the ellipse-like path E produce reciprocating arcuate movements along a circular curve K for the point P, with the result that point P and hence the control lever 17 oscillate about a point H.
  • the ellipse-like path E may therefore be regarded as a coupling curve.
  • the centers A of the circular comb shaft 1 and B of the eccentric 8 do not coincide but are offset from each other.
  • the point E rotates along a circular path E about the center A of the shaft 1, while the point D rotates on a circular path K about the center B of the eccentric 8.
  • the eccentric 8 is therefor non-uniformly driven. Owing to the supporting lever 14, these rotating movements generate for the center C of the rocker 11 a movement along a circular path K with a center at B, the center of rotation of the eccentric 8, and for point G movement along the ellipse-like path E so that pivot G completes one' revolution from G through G" and G'" back to G.
  • the positions of the points D and E correspond to points D and E.
  • the zone G to G through which point G travels on the ellipse-like path E thus produces a fast return movement of the detaching rollers 23 (return) through the movements of point F and the control lever 17; the zone from G" to G'", a forward movement of the detaching rollers 23 (detachment of the fibers); and the zone 6 to G a prolonged standstill time or stoppage of the detaching rollers 23.
  • a movement of point F on the circular curve K from F to F corresponds to a movement of point G on the ellipse-like path E from G to G", as a result of which the control lever 17 completes a fast movement, in consequence of which the detaching rollers 23 complete a backward movement which continues up to G" in path E Due to the continuing movement of point G from G" towards 6, point F again moves from position F" on the circular path K towards F.
  • control lever 17 rotates back in the opposite direction and in doing so imparts a forward movement to the detaching rollers 23 continuing until point G reaches position G on the ellipse-like path E and hence until point F has reached position F on the circular path K
  • point P stays in position at P which in practice corresponds to stoppage of the control lever 17 and hence of the shaft 20 of the differential gear and also of the detaching rollers 23 in relation to the additional superimposed reciprocating movement imparted to the differential gear 21 and hence to the detaching rollers 23.
  • point G must move along an approximately circular path around point F in the section G"-G of the ellipse-like path E
  • the section G"G of the ellipse-like path E corresponds to a circular path with its center at point P.
  • the dwell time of point F is extended by the non-uniform drive of eccentric 8 to more than 180 of one combing cycle, which would not be achieved by an ordinary crank drive in which the center of the circular comb shaft coincides with the center of the eccentric 8.
  • Adjustment of the particular moment at which the backward movement, forward movement and stoppage of the detaching rollers 23 are initiated, is effected by means of the adjusting screw 6 on the adjusting disc 4 by which points G, G and G may be displaced as required and fixed.
  • the invention can undergo further alterations.
  • the point of aritculation E on the adjusting disk 4 is angularly adjustable relatively to the drive gearwheel 3 for the circular shaft 1, as is further shown in FIGS. 4 and 5.
  • an adjusting disk 39 disposed on a circular-comb shaft 38, is connected by a screw 40 with a gearwheel (not shown) also disposed on the circular-comb shaft back of the plane of the drawing.
  • adjusting disk 39 has a slot 41 which runs circumferentially and in which is disposed a pin 42, upon which is povotably fastened a pull-rod (not shown) situated in front of the plane of the drawing.
  • the pin 42 is further fastened to the adjusting disk 39 by means of a nut 43.
  • an adjusting disk 45 is disposed on a circular-comb shaft 44 and has a pin 46 upon which is pivotably disposed a pull-rod (not shown) situated in front of the plane of the drawing.
  • the adjusting disk has a slot which runs circumferentially and in which is disposed a pin 48 of a gearwheel (not shown) situated back of the plane of the drawing.
  • the adjusting disk 45 is fastenend to the pin 48.
  • the pull rod 10 can be mounted at one end to a crank which is not connected to the gear wheel 3 or the drive shaft of the circular comb 1 of a combing machine.
  • the adjusting disc 4 can be mounted on another drive shaft mounted separately from the drive shaft of the circular comb.
  • the invention thus provides a control system for the detaching rollers of a combing machine wherein the vocational step movement of the detaching rollers, that is, a greater forward movement than backward movement, is achieved in a simple efficient manner.
  • a control system for the drive of a plurality of detaching rollers in a rectilinear combing machine having a frame, a differential gear connected to said detaching rollers, and a drive means connected to said differential gear for imparting a uniform rotary movement thereto; said control system comprising an adjusting disc rotatably mounted in said frame,
  • a pull-rod pivotably mounted at each end thereof to said adjusting disc and said eccentric respectively to impart a non-uniform rotary motion of constant speed to said eccentric during rotation of said adjusting disc
  • control lever connected to said differential gear to impose a motion thereon
  • a control system as set forth in claim 1 further comprising a gearwheel connected between said drive means and said differential gear for transmitting movement therebetween, and a sun-wheel in said differential gear con' nected to said control lever for transmitting movement therebetween.
  • a control system as set forth in claim 1 further comprising a circular comb shaft in said drive means, said adjusting disc being mounted on said circular comb shaft.
  • a control system for the drive of a plurality of detaching rollers in a rectilinear combing machine comprising a differential gear having a first input shaft for receiving a reciprocating movement, a second input shaft 7 for receiving a uniform movement, means for superimposing said movements therein, means for imparting said superimposed movements to the detaching rollers, a rotatable gear wheel, an eccentric mounted in oifset relation to the center of rotation of said gear Wheel, a pull rod pivotally mounted at each end thereof to said gear wheel and said eccentric respectively to rotate said eccentric with a non-uniform rotatory movement during uniform rotation of said gear wheel, a rocker supported on said eccentric for movement thereby, a rotatably mounted supporting lever pivotably connected to said rocker, a link pivotably connected to said rocker, and a control lever secured on said first input shaft and pivotably connected to said link whereby movement of said rocker is imparted through said link and said control lever to said first input shaft to reciprocate said control lever and said first input shaft.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Pinball Game Machines (AREA)
  • Transmission Devices (AREA)
  • Friction Gearing (AREA)
US761720A 1967-09-30 1968-09-23 Control system for the drive of detaching rollers in textile combing machines Expired - Lifetime US3584346A (en)

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Application Number Priority Date Filing Date Title
DEM0075739 1967-09-30

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CH (1) CH499635A (enrdf_load_html_response)
DE (1) DE1685575C3 (enrdf_load_html_response)
FR (1) FR1564697A (enrdf_load_html_response)
GB (1) GB1224624A (enrdf_load_html_response)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2531124A1 (de) * 1974-07-13 1976-08-12 Toyoda Automatic Loom Works Vorrichtung zum antrieb von abstreifwalzen bei einer textilen kaemm- maschine
US5022122A (en) * 1988-12-23 1991-06-11 Rieter Machine Works, Ltd. Combing machine
EP1043430A3 (de) * 1999-03-31 2001-02-21 Maschinenfabrik Rieter Ag Antriebsvorrichtung für die Abreisszylinder einer Kämmaschine
CN103409858A (zh) * 2013-08-08 2013-11-27 天津工业大学 基于分时单向混合驱动的棉精梳机分离罗拉可控驱动方法
CN104195678A (zh) * 2014-09-23 2014-12-10 中原工学院 一种精梳机分离罗拉传动机构变速传动装置
CN104195678B (zh) * 2014-09-23 2017-01-04 中原工学院 一种精梳机分离罗拉传动机构变速传动装置
CN111826750A (zh) * 2020-07-30 2020-10-27 安徽华茂纺织股份有限公司 一种精梳机改变有效输出长度的方法
CN113795617A (zh) * 2019-05-09 2021-12-14 里特机械公司 具有用于精梳机的分离滚筒对的压力滚筒的装置的分离滚筒单元

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1139098B (de) * 1958-10-25 1962-11-08 Marta Roth Geb Hoenmans Registerkartei, insbesondere fuer Fernsprechnummern
DE2610314C3 (de) * 1976-03-12 1979-01-25 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Antriebsvorrichtung für die AbreiBwalzen von Kämmaschinen
EP2108721A1 (de) 2008-04-08 2009-10-14 Maschinenfabrik Rieter Ag Antrieb für Abreisszylinder in einer Kämmmaschine
CH700285A2 (de) 2009-01-26 2010-07-30 Rieter Ag Maschf Antriebsvorrichtung für die Abreisswalzen einer Kämmmaschine.
CH711419A2 (de) 2015-08-05 2017-02-15 Rieter Ag Maschf Antriebsvorrichtung für eine Kämmmaschine.
CH714580A2 (de) 2018-01-23 2019-07-31 Rieter Ag Maschf Kämmmaschine mit einem Getriebe in Modulbauweise.
CH714584A2 (de) * 2018-01-23 2019-07-31 Rieter Ag Maschf Getriebe mit einer Einstellvorrichtung für eine Pilgerschrittbewegung für eine Kämmmaschine.
CH714582A1 (de) * 2018-01-23 2019-07-31 Rieter Ag Maschf Antriebsvorrichtung für Abreisswalzen einer Kämmmaschine.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2531124A1 (de) * 1974-07-13 1976-08-12 Toyoda Automatic Loom Works Vorrichtung zum antrieb von abstreifwalzen bei einer textilen kaemm- maschine
US5022122A (en) * 1988-12-23 1991-06-11 Rieter Machine Works, Ltd. Combing machine
EP1043430A3 (de) * 1999-03-31 2001-02-21 Maschinenfabrik Rieter Ag Antriebsvorrichtung für die Abreisszylinder einer Kämmaschine
CN103409858A (zh) * 2013-08-08 2013-11-27 天津工业大学 基于分时单向混合驱动的棉精梳机分离罗拉可控驱动方法
CN103409858B (zh) * 2013-08-08 2015-09-23 天津工业大学 基于分时单向混合驱动的棉精梳机分离罗拉可控驱动方法
CN104195678A (zh) * 2014-09-23 2014-12-10 中原工学院 一种精梳机分离罗拉传动机构变速传动装置
CN104195678B (zh) * 2014-09-23 2017-01-04 中原工学院 一种精梳机分离罗拉传动机构变速传动装置
CN113795617A (zh) * 2019-05-09 2021-12-14 里特机械公司 具有用于精梳机的分离滚筒对的压力滚筒的装置的分离滚筒单元
CN111826750A (zh) * 2020-07-30 2020-10-27 安徽华茂纺织股份有限公司 一种精梳机改变有效输出长度的方法

Also Published As

Publication number Publication date
DE1685575B2 (de) 1973-05-03
DE1685575A1 (de) 1971-08-12
DE1685575C3 (de) 1973-11-22
FR1564697A (enrdf_load_html_response) 1969-04-25
GB1224624A (en) 1971-03-10
CH499635A (de) 1970-11-30

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