EP1451397B1 - Procede et dispositif de commande d'un groupe d'etireur d'une machine textile - Google Patents

Procede et dispositif de commande d'un groupe d'etireur d'une machine textile Download PDF

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Publication number
EP1451397B1
EP1451397B1 EP02802534A EP02802534A EP1451397B1 EP 1451397 B1 EP1451397 B1 EP 1451397B1 EP 02802534 A EP02802534 A EP 02802534A EP 02802534 A EP02802534 A EP 02802534A EP 1451397 B1 EP1451397 B1 EP 1451397B1
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EP
European Patent Office
Prior art keywords
roller
belt
driven
rotation
notched
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
EP02802534A
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German (de)
English (en)
French (fr)
Other versions
EP1451397A1 (fr
Inventor
Jean-Louis Dumas
Gérard GAIRE
Jean-Baptiste Schaffhauser
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.)
N Schlumberger SAS
Original Assignee
N Schlumberger SAS
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Filing date
Publication date
Application filed by N Schlumberger SAS filed Critical N Schlumberger SAS
Publication of EP1451397A1 publication Critical patent/EP1451397A1/fr
Application granted granted Critical
Publication of EP1451397B1 publication Critical patent/EP1451397B1/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control

Definitions

  • the present invention relates to the field of textile machines, especially stretching machines and finishers and relates to a method of controlling a stretching unit of a textile machine.
  • the invention also relates to a device for implementing this method.
  • machine-pulling units such as chain gills, intersecting screws, sun or hedgehog gills, and finishers, such as sleeve rubbers and pin benches, generally consist of a set of two corrugated metal cylinders, called draw rolls, against which is pressurized a cylinder covered with an elastic lining called a pressure cylinder.
  • the draw roll which is located in the immediate vicinity of the fiber control zone, has a smaller diameter than the adjacent draw roll, in order to minimize the distance between the drawing unit and the fiber control area.
  • Each drawing cylinder has at its end a pinion through which it receives its rotational movement.
  • Such a stretching unit is shown schematically, for example, in FR-A-1 456 485, in which the gears of each drawing roll are interconnected by an intermediate gear.
  • one of the pinions is a bell pinion inside which meshes the other pinion.
  • more recent embodiments provide for the installation of a lubricated housing containing an intermediate shaft with two gears, in order to connect the gears of the two drawing rolls.
  • This solution has the advantage of allowing greater speeds of rotation of the drawing rolls and thus to increase the production of textile machines. It has, on the other hand, the disadvantage of being expensive, of requiring a perfect seal and of causing a high temperature rise of the moving parts.
  • the elastic material of the pressure cylinder must necessarily compensate by its deformation these slight differences in speed, which leads to a heating of the moving parts, a pulsation may cause regularity defects on the ribbon or the wick produced by the textile machine, a premature wear of the pressure roll liners, overloading of the lubricated sump gearwheels, causing premature wear, overheating and increased operating noise, as well as overheating of the lubricating fluid and rapid wear of the seals sealing, which results in leakage of oil or fluid grease.
  • the object of the present invention is to overcome these drawbacks by proposing a new method of controlling a stretching unit of a textile machine and a device for implementing this process, making it possible to obtain lower manufacturing costs, and rapid disassembly and reassembly of the draw rolls.
  • the method of controlling a stretching unit of a textile machine comprising two drawing rolls and a pressure roll, which is pressurized against the two drawing rolls, and optionally a calender roll cooperating with a roll of pressure, is characterized in that it consists essentially in driving in rotation without slippage one of the drawing rolls and in driving in rotation by friction the other drawing roll.
  • the invention also relates to a device for implementing this method, in the form of a stretching unit comprising two drawing rolls and a pressure cylinder which is pressurized against the two drawing rolls, and optionally a calender roll cooperating with a pressure roll, characterized in that one of the drawing rolls is rotated by a toothed belt meshing on a pinion integral with the first drawing cylinder, and the other drawing cylinder is rotated by a friction device.
  • the method of controlling a drawing unit of a textile machine comprising two drawing rolls 1 and 2 mounted on bearings 6 and a pressure roll 3, which is pressurized against the two drawing rolls 1 and 2, and optionally a calender roll 16 cooperating with a pressure roll 18, essentially consists in driving in rotation without sliding one of the drawing rolls 1 and rotating in rotation by friction the other drawing cylinder 2.
  • This method is implemented by a device in the form of a stretching unit comprising two drawing rolls 1 and 2, mounted on bearings 6, and a pressure cylinder 3 lined with an elastic coating, which is pressurized against two draw rolls 1 and 2, and optionally a calender roll 16 cooperating with a pressure roll 18.
  • the first drawing roll 1 has a smaller diameter than the second drawing roll 2, so that the distance separating the control zone 4 from the fibers and the nip of the fibers, constituted by the contact zone of the pressing roll 3 against the drawing roll 1, the lowest possible.
  • the draw rolls 1 and 2 are helically splined and are mounted on bearings 5 (FIG. 5) inside integral bearings 6. of the machine frame.
  • the first drawing cylinder 1 has at one of its ends, a notched pinion 7 rotated by means of a toothed belt 8, itself driven by a notched pinion 9 rotated by a motor 10, by the intermediate of a kinematic chain (not shown).
  • one of the drawing rolls 1 is rotated by a toothed belt 8, meshing with a pinion 7 integral with this first drawing roll 1, and the other drawing roll 2 is rotated by a device friction.
  • the friction device is in the form of a non-toothed belt 12 rotating in a smooth pulley 11 secured to the second 2.
  • a non-toothed belt 12 with a smooth pulley 11 is not perfectly positive, slight slippage of one on the other are allowed and absorbed by the belt. not notched 12 and not by the lining of the pressure cylinder 3.
  • the dimensions and characteristics of the non-toothed belt 12 and the pulley 11 are determined in such a way that the drawing cylinder or cylinders 2 are driven almost positively, that is that is, as soon as there is a peripheral speed difference of one of the drawing rolls 1 relative to the other 2 or to the pressure roll 3, this is the belt 12 itself sliding on its pulley 11 and absorbs the difference in speed and not the lining of the pressure cylinder 3.
  • the second drawing cylinder 2 has at one of its ends a preferably smooth pulley 11 and convex rim, rotated by means of a non-toothed belt, preferably a flat belt 12 itself driven by an intermediate pulley 13 mounted on an intermediate axis 14. On the same intermediate axis 14 is mounted an intermediate toothed pinion 15 driven in rotation by the toothed belt 8.
  • the motor 10 positively drives the first drawing roll 1 without any slippage, whereas the second drawing roll 2 is driven by the friction device consisting of the smooth pulleys 11 and 13 and the notched belt 12.
  • the friction device acts as soon as a slight peripheral speed difference tends to appear between the pressure roll 3 and the second drawing cylinder 2 allowing the non-toothed belt 12 to slide on one of the smooth pulleys 11 or 13.
  • the non-toothed belt 12 absorbs the sliding energy caused by slight differences in speed of a member relative to the other, the coating of the pressure cylinder 3 is then preserved.
  • Figure 4 of the accompanying drawings is a side elevational view of a drawing group according to the invention.
  • the tension of the non-toothed belt 12 is adjustable by changing the distance between the axes of the smooth pulleys 11 and 13.
  • the smooth pulley 13 is integral with the axis 14 mounted on a bearing inside a bearing Articulated about a hinge axis 21.
  • the hinged bearing 20 can oscillate about the hinge axis 21 and move relative to the frame of the machine, so as to change the distance between the axes of the hinge.
  • a locking means 22, such as a screw and nut assembly, allows the bearing 20 to maintain a stable position relative to the machine frame.
  • the tension of the toothed belt 8 is also adjustable by means of a tensioner 23 whose position is modifiable relative to the frame of the machine. To ensure correct operation of the friction device, the tension of the non-toothed belt 12 is first adjusted, then the tension of the toothed belt 8 is adjusted.
  • the non-toothed belt 12 can also be driven directly via the calender roll 16, the intermediate pulley 13 then being mounted on the axis of the latter and the tension of said non-toothed belt 12 being provided by means of a tensioner roller located on the path of said belt.
  • the bearing 20, the hinge 21 and the locking means 22 are removed.
  • the friction device may consist of the contact between the pressure cylinder 3 and the drawing rolls 1 and 2 (FIG. 3).
  • the first drawing roll 1 is rotated without slipping by means of a toothed belt 8 and a notched pinion 7 integral with the drawing roll 1.
  • the toothed belt 8 cooperates with the notched pinion 9, as indicated above.
  • the first drawing cylinder 1 transmits, by surface contact, its rotational movement to the cylinder of pressure 3.
  • the latter then transmits the rotational movement, also by surface contact, to the second drawing roll 2.
  • the second drawing roll 2 acquires the same peripheral speed as that of the pressure roll 3.
  • At least one of the cylinders constituting the drawing group is mounted on bearings 6 with removable caps, to facilitate disassembly and reassembly of said drawing cylinder.
  • each bearing 6 consists of a support 24a integral with the frame of the machine and a removable cap 24b.
  • the support 24a and the removable cap 24b each have a semi-cylindrical bearing surface adjusted to the outside diameter of the bearing 5.
  • the textile machine when the textile machine is equipped with a calender roll 16 cooperating with a pressure roll 18, the toothed belt 8 meshes, in addition, with a notched pinion 17 mounted at one end of said calender roll 16.
  • a calender roll 16 which is helically grooved, is mounted on bearings inside bearings integral with the frame of the machine, in the same way as the drawing rolls 1 and 2.
  • the pressure roll 18, which is pressurized against the calender roll 16, acquires the same peripheral speed as that of the calender roll 16.
  • calender cylinder 16 relative to that of the drawing group. Indeed, in some cases, the textile material must be more or less stretched, or even sometimes relaxed between the drawing group and the calender roll.
  • the tension that is to say the peripheral speed ratio of the calender cylinder relative to the drawing group, is modifiable by changing the toothed pinion 17.
  • the accuracy of this adjustment depends on the number of teeth of the pinion 17.
  • the calender roll 16 when the textile machine is equipped with a calender roll 16 cooperating with a pressure roll 18, the calender roll 16 can be driven by friction, by providing at one of its ends a smooth pulley 19 driven in rotation by the non-toothed belt 12.
  • the tension that is to say the peripheral speed ratio of the calender roll 16 relative to the stretcher group, is also modifiable by changing the smooth pulley 19.
  • the accuracy of this setting is finer, because it depends on the diameter of the smooth pulley 19 and not an integer number of teeth.
  • the toothed belt 8 when the textile machine does not have a calender roll, the toothed belt 8 cooperates with a notched pinion 17 rotatably mounted in a bearing on the frame of the machine, in eccentric position relative to a straight line connecting the axes of the smooth pulleys 11 and 13.
  • the toothed belt 8 is forced to make a detour identical to that it would perform if the machine was equipped with a calender roll.
  • the invention it is possible to make a new manufacturing stretching unit that is less expensive than the groups that currently exist.
  • a group no longer requires maintenance and is no longer subject to lubricant leakage.
  • the lining of the pressure rollers are formed and said drawing group no longer generates pulsations of said linings, pulsations that were sometimes responsible for textile defects on ribbons or strands.
  • the moving members of the stretching unit in accordance with the invention thus achieve a maximum temperature in operation that is much lower than that of the known devices. previously.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Looms (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP02802534A 2001-12-05 2002-12-03 Procede et dispositif de commande d'un groupe d'etireur d'une machine textile Expired - Lifetime EP1451397B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0115734 2001-12-05
FR0115734A FR2833021B1 (fr) 2001-12-05 2001-12-05 Procede et dispositif de commande d'un groupe etireur d'une machine textile
PCT/FR2002/004161 WO2003050334A1 (fr) 2001-12-05 2002-12-03 Procede et dispositif de commande d'un groupe etireur d'une machine textile

Publications (2)

Publication Number Publication Date
EP1451397A1 EP1451397A1 (fr) 2004-09-01
EP1451397B1 true EP1451397B1 (fr) 2006-02-01

Family

ID=8870145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02802534A Expired - Lifetime EP1451397B1 (fr) 2001-12-05 2002-12-03 Procede et dispositif de commande d'un groupe d'etireur d'une machine textile

Country Status (6)

Country Link
EP (1) EP1451397B1 (zh)
CN (1) CN100344812C (zh)
AU (1) AU2002364920A1 (zh)
FR (1) FR2833021B1 (zh)
RU (1) RU2293805C2 (zh)
WO (1) WO2003050334A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103741284A (zh) * 2013-12-20 2014-04-23 张家港市天江精密模具制造有限公司 一种纺织用粗纱机锭翼
CN112709795A (zh) * 2020-12-23 2021-04-27 张振斌 一种电动机调节和控制的传动装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715754A (en) * 1953-11-05 1955-08-23 Earl Heard Jr M Drafting system
DE2044996A1 (de) * 1970-09-11 1972-03-16 Schubert & Salzer Maschinen Verfahren und Vorrichtung zum Verziehen von Faserbändern
DE4122883A1 (de) * 1991-07-11 1993-01-14 Schurr Stahlecker & Grill Spinnmaschine mit einer vielzahl von in maschinenlaengsrichtung mit abstand zueinander angeordneten streckwerken

Also Published As

Publication number Publication date
FR2833021A1 (fr) 2003-06-06
FR2833021B1 (fr) 2004-05-28
EP1451397A1 (fr) 2004-09-01
RU2004120271A (ru) 2005-03-10
WO2003050334A1 (fr) 2003-06-19
CN1599811A (zh) 2005-03-23
RU2293805C2 (ru) 2007-02-20
CN100344812C (zh) 2007-10-24
AU2002364920A1 (en) 2003-06-23

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