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EP1043430A2 - Appareil d'entrainement de cylindres arracheurs d'une machine de peignage - Google Patents

Appareil d'entrainement de cylindres arracheurs d'une machine de peignage Download PDF

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Publication number
EP1043430A2
EP1043430A2 EP00810180A EP00810180A EP1043430A2 EP 1043430 A2 EP1043430 A2 EP 1043430A2 EP 00810180 A EP00810180 A EP 00810180A EP 00810180 A EP00810180 A EP 00810180A EP 1043430 A2 EP1043430 A2 EP 1043430A2
Authority
EP
European Patent Office
Prior art keywords
eccentric
rocker
articulation point
tear
point
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
EP00810180A
Other languages
German (de)
English (en)
Other versions
EP1043430B1 (fr
EP1043430A3 (fr
Inventor
Thomas Zollinger
Christian Esposito
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 EP1043430A2 publication Critical patent/EP1043430A2/fr
Publication of EP1043430A3 publication Critical patent/EP1043430A3/fr
Application granted granted Critical
Publication of EP1043430B1 publication Critical patent/EP1043430B1/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
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/26—Driving arrangements

Definitions

  • the invention relates to a drive device for the tear-off rollers of a combing machine according to the preamble of claim 1.
  • a drive device for the tear-off rollers of a combing machine according to the preamble of claim 1.
  • the end of a cotton wool protruding from a pair of pliers ("fiber beard" for short) is combed out through a comb segment of a circular comb rotatably mounted below the pliers.
  • the pliers unit is mounted so that it can swing.
  • the pliers are closed in their rear position, where the combing of the fiber beard takes place.
  • the pliers When the pliers move forward in the direction of a rotatable pair of tear-off rolls, the pliers open and the end of the protruding and combed fiber beard is placed on the end of a non-woven fabric protruding from the tear-off rolls. During this process, the fiber beard comes into the effective range of a fixed comb.
  • the tear-off roller pair performs a mit step movement during a comb play and is coupled to a corresponding drive device in order to carry out this movement. As soon as the end of the fiber beard protruding from the pliers rests on the end of the end of the nonwoven fabric that is partially conveyed back by the tear-off rollers, the tear-off rollers carry out a reversing movement.
  • the end of the fiber is taken along and reaches the pinch point of the tear-off rollers. With further rotation of the tear-off rollers, a fiber package on the cotton end of the cotton projecting out of the pliers is then pulled out via this clamping point and soldered (or connected) to the fleece end.
  • the fiber bundle that was pulled out was pulled through the row of needles of a fixed comb during the tear-off process, as a result of which short fibers, nits and other contaminants are separated in addition to the combing out of the circular comb.
  • the direction of rotation of the tear-off cylinder is reversed again and the newly formed fleece end is shifted again in the direction of the pliers unit for the next attachment process.
  • the ratio between the distance of the articulation point of the drawbar on the eccentric to its fulcrum to the distance between the center of the rocker and the fulcrum of the eccentric is chosen to be greater than 3.5.
  • the drive area at the eccentric with the lever lengths of the rocker for the subsequent coupling and control lever and the pull rod acts like an amplifier element for optimal transmission of the drive force while observing kinematic specifications regarding the mit step movement of the tear-off rollers.
  • Fig. 1 one in the machine frame 7 of a combing machine supported round comb shaft 1 from a drive shaft 25 via a seated thereon Gear 26 and a gear 3 seated on the round comb shaft 1.
  • the Drive shaft 25 receives its drive from a motor (not shown) via a V-belt pulley 24.
  • a motor not shown
  • a V-belt pulley 24 One sits with the gear 3 on the round comb shaft 1 an adjusting screw 6 connected adjusting disc 4, on which by means of a pin 5, such as Fig. 2 also shows a tie rod 10 is articulated at a pivot point E.
  • the pull rod 10 engages by means of a pin 9 on one Articulation point D on an eccentric 8.
  • the eccentric 8 from the round comb shaft 1 on the adjusting disc 4 and the pull rod 10 gives a movement, so how 1 and 2 can be seen, this movement from the eccentric 8 to a rocker 11 transferred, on the one hand by means of a pin 15 on a support lever 14 in one Support lever pivot point J is articulated, the support lever 14 on a Pliers drive axis 22 is mounted while the rocker 11 on opposite circumferential point via a pin 12 at a pivot point G.
  • a coupling 16 is articulated, which has a pin 19 with a Articulation point F is articulated to a control lever 17.
  • the control lever 17 is fixed with an axis 20 of a differential gear 21 connected.
  • a web 30 'of Differential gear 21 contains, as FIG.
  • FIG. 1 also shows, from one to the Round comb shaft 1 gear 27 via a on a on the machine frame 7 located pin 29 mounted intermediate gear 28 and a step 30 one in and acting in the same direction and with constant rotational speed Rotary motion.
  • This rotary movement is one in the differential gear 21 and with whose web 30 'connected planet gear 32, which on one of the Differential gear axis 20 fixed sun gear 31 rolls and with a Planet gear 32 'is connected, communicated and via a on the differential gear axis 20 rotatably mounted and connected to a gear 34 sun gear 33 and further via gear wheels 35 and 36 mounted outside the differential gear 21 and 37 transferred to tear-off rollers 23.
  • the rocker 11 By movements of the eccentric 8, the rocker 11 performs eccentric movements from which by the coupling point G attached to the rocker 11 via 16 the pivot point F on the control lever 17 and thus on the differential gear axis 20 of the differential gear 21 are transmitted, in this of the Round comb shaft 1 in the same direction and with the same Rotational speed generated rotary motion superimposed on the tear-off rollers transfer.
  • the connecting line V G (FIG. 3) between the support lever articulation point J and the articulation point G of the rocker arm 11 forms an acute angle ⁇ with the straight line between the support lever articulation point J and the center C of the rocker arm 11. Because the rocker 11 at the support lever articulation point J about a articulation point K of the support lever 14 on the pinch drive axis 22 is pivotable, the center point C of the rocker 11 is moved on a circular path K Z with a center point B when the eccentric 8 is moved, as a result of which the articulation point G moves along an elliptical path E B.
  • the movements of the articulation point G along the ellipse-like path E B produce circular movements according to a circular path curve K S for the articulation point F, the articulation point F and thus the control lever 17 swinging about a pivot point H.
  • the elliptical orbit E B can therefore be referred to as a coupling curve.
  • FIG. 3 also shows, the centers A of the round comb shaft 1 and B of the eccentric 8 do not coincide. Therefore, when the pull rod 10 rotates, the articulation point E of the same on a circular path K E around the center A of the center of the round comb shaft 1 and the articulation point D of the same on a circular path K D around the center B, the center of the eccentric 8. The eccentric 8 is therefore driven unevenly.
  • the rotary movements produce a movement on the circular path K Z with the center B, the axis of rotation of the eccentric 8, and for the articulation point G movements on the elliptical-like path E B , the articulation point G being one Circulation from G 'via G "and G"' completed again to G '.
  • a position of the articulation point D at D 'or the articulation point E at E' corresponds to the positions of the center of the swing arm C at C ', the support lever articulation point J at J' and the articulation point G at G '(shown in dashed lines).
  • the area G 'to G "through which the articulation point G traverses on the elliptical path E B thus causes the tear-off rollers 23 (return delivery) to move quickly backward via the movements of the articulation point F and the control lever 17, the area G" to G “' a forward movement of the tear-off rollers 23 (tearing off the fiber material) and the region G ′′ to G ′ a standstill of the tear-off rollers 23.
  • a movement of the articulation point G on the elliptical path E B from G 'to G "corresponds to a movement of the articulation point F on the circular path from F to F", as a result of which the control lever 17 performs a rapid movement, with the result that the tear-off rollers cause a Carry out backward movement which continues until G "of the articulation point G.
  • the distance G corresponds "'G' of the elliptical orbit E B of a circular path with its center at the articulation point F.
  • the eccentric 8 drives the unevenly driven Turn the articulation point D of the pull rod 10 by less than 180 ° on the circular path K D and the articulation point G move in the section from G "'to G' of the elliptical-like path E B on one that passes less than 180 °, as a result of which the control lever 17 comes to a standstill by more than 180 ° of a comb play
  • the uneven drive of the eccentric 8 increases the dwell time of the articulation point F above 180 ° of a combretes extended, which is not achieved by a simple crank mechanism in which the center of the round comb shaft and the center of the eccentric 8 coincide.
  • the movement path of the articulation point G generated by the revolving eccentric 8 via the center C of the rocker 11 oscillating on the circular path K Z thus causes the articulation point F to move back and forth on the circular path K S between the positions F and F ", which are via the Control lever 17 and the differential gear axis 20 are transferred to the differential gear 21 and subsequently to the tear-off rollers, as a result of which they carry out a rapid backward movement and then a forward movement, and over the dwell time of the articulation point F in the position F, which corresponds to the distance of the articulation point G on the elliptical one Path E B between G "'and G' corresponds to come to a standstill.
  • the setting of the respective point in time at which the backward and forward movement and standstill for the tear-off rollers 23 are triggered is carried out by means of the adjusting screw 6 on the adjusting disk 4, as a result of which the points G ', G "and G"' are shifted and fixed to the desired extent can.
  • An influence on the pilgrim step movement can also be achieved in that the articulation point E on the adjusting disk 4 is not only adjusted in angle with respect to the drive gear 3 for the round comb shaft 1, but also by changing the length of the pull rod 10 by exchanging the same or by using one in length adjustable pull rod 10 and the point of application E of the pull rod 10 on the adjusting disc 4 can be set to be radially adjustable, so that the crank radius for the movements of the eccentric is changed. In this way, the conditions can be largely controlled.
  • Information on the last-mentioned settings can also be found in the corresponding US Pat. No. 3,584,346 from FIGS. 4 and 5 along with their descriptions.
  • FIG. 4 shows the course of acceleration (m / s 2 ) over the duration of a comb play.
  • a comb play is divided into 40 indexes, ie a circular comb rotating at constant speed has made a complete revolution within this 40 index.
  • the curve drawn with a solid line shows the course of the acceleration of the tear-off rollers during a comb play with the drive device proposed according to the invention at 400 K / min.
  • the dash-dotted curve shows the acceleration curve of the tear-off rollers at 350 K / min of the previous solution. From this curve it can be seen that the acceleration increased the highest up to index 17.
  • the tear-off and soldering process begins, the direction of rotation of the tear-off rollers being reversed in order to pull a fiber package from the end of the fiber beard presented by the pliers and to solder it to the end of the fleece layer formed. Approx. at index 24 the tear off process is finished.
  • the acceleration between the curve with the solution claimed according to the invention (solid line) and the curve of the previous solution with the dash-dotted illustration shows a difference x in the upper region and a difference y in the lower region, although the new one Solution is already operated at 400 K / min.
  • the gear unit designed according to the invention with the specially designed gear ratios makes it possible to reduce the necessary acceleration of the tear-off rollers and thus also to minimize the acceleration forces. This makes it possible to increase the number of comb cycles without the mechanical forces on the drive elements and their bearings rising above the previous ones.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP20000810180 1999-03-31 2000-03-02 Appareil d'entrainement de cylindres arracheurs d'une machine de peignage Expired - Lifetime EP1043430B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH61299 1999-03-31
CH61299 1999-03-31

Publications (3)

Publication Number Publication Date
EP1043430A2 true EP1043430A2 (fr) 2000-10-11
EP1043430A3 EP1043430A3 (fr) 2001-02-21
EP1043430B1 EP1043430B1 (fr) 2004-02-25

Family

ID=4191050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000810180 Expired - Lifetime EP1043430B1 (fr) 1999-03-31 2000-03-02 Appareil d'entrainement de cylindres arracheurs d'une machine de peignage

Country Status (3)

Country Link
EP (1) EP1043430B1 (fr)
CN (1) CN1179075C (fr)
DE (1) DE50005372D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2108722A1 (fr) * 2008-04-08 2009-10-14 Maschinenfabrik Rieter Ag Entraînement du système de pinces alimentaires d'une peigneuse
EP2108721A1 (fr) * 2008-04-08 2009-10-14 Maschinenfabrik Rieter Ag Entraînement pour cylindres d'arrachage d'une peigneuse
EP2444534A1 (fr) * 2010-10-22 2012-04-25 Kabushiki Kaisha Toyota Jidoshokki Dispositif de réglage du mouvement pour détacher un rouleau d'une peigneuse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1807718A (zh) * 2006-02-14 2006-07-26 昆山市凯宫机械有限公司 精梳机分离罗拉的驱动方法
CH714583A1 (de) * 2018-01-23 2019-07-31 Rieter Ag Maschf Antriebsvorrichtung für eine Kämmmaschine.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584346A (en) * 1967-09-30 1971-06-15 Rieter Ag Maschf Control system for the drive of detaching rollers in textile combing machines
US3960024A (en) * 1974-07-13 1976-06-01 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Apparatus for driving detaching rollers in textile combing machines
EP0418472A1 (fr) * 1989-09-08 1991-03-27 Kabushiki Kaisha Hara Shokki Seisakusho Mécanisme d'entraînement d'un cylindre arracheur dans une peigneuse
DE19612808A1 (de) * 1996-04-02 1997-10-09 Cetex Chemnitzer Textilmaschin Antriebsvorrichtung für die Abreißwalzen einer Kämmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584346A (en) * 1967-09-30 1971-06-15 Rieter Ag Maschf Control system for the drive of detaching rollers in textile combing machines
US3960024A (en) * 1974-07-13 1976-06-01 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Apparatus for driving detaching rollers in textile combing machines
EP0418472A1 (fr) * 1989-09-08 1991-03-27 Kabushiki Kaisha Hara Shokki Seisakusho Mécanisme d'entraînement d'un cylindre arracheur dans une peigneuse
DE19612808A1 (de) * 1996-04-02 1997-10-09 Cetex Chemnitzer Textilmaschin Antriebsvorrichtung für die Abreißwalzen einer Kämmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2108722A1 (fr) * 2008-04-08 2009-10-14 Maschinenfabrik Rieter Ag Entraînement du système de pinces alimentaires d'une peigneuse
EP2108721A1 (fr) * 2008-04-08 2009-10-14 Maschinenfabrik Rieter Ag Entraînement pour cylindres d'arrachage d'une peigneuse
EP2444534A1 (fr) * 2010-10-22 2012-04-25 Kabushiki Kaisha Toyota Jidoshokki Dispositif de réglage du mouvement pour détacher un rouleau d'une peigneuse

Also Published As

Publication number Publication date
CN1270241A (zh) 2000-10-18
EP1043430B1 (fr) 2004-02-25
EP1043430A3 (fr) 2001-02-21
DE50005372D1 (de) 2004-04-01
CN1179075C (zh) 2004-12-08

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