EP0933454A2 - Dispositif de filage ou de retordage sur broche - Google Patents

Dispositif de filage ou de retordage sur broche Download PDF

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Publication number
EP0933454A2
EP0933454A2 EP98120516A EP98120516A EP0933454A2 EP 0933454 A2 EP0933454 A2 EP 0933454A2 EP 98120516 A EP98120516 A EP 98120516A EP 98120516 A EP98120516 A EP 98120516A EP 0933454 A2 EP0933454 A2 EP 0933454A2
Authority
EP
European Patent Office
Prior art keywords
sliding surface
spindle
yarn
spinning
twisting device
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Withdrawn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
EP98120516A
Other languages
German (de)
English (en)
Other versions
EP0933454A3 (fr
Inventor
Stanislav Didek
Petr Blazek
Vaclav Kobovy
Agaton Planansky
Alois Stejskal
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.)
Vyzkumny Ustav Bavlnarsky AS
Original Assignee
Vyzkumny Ustav Bavlnarsky AS
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 Vyzkumny Ustav Bavlnarsky AS filed Critical Vyzkumny Ustav Bavlnarsky AS
Publication of EP0933454A2 publication Critical patent/EP0933454A2/fr
Publication of EP0933454A3 publication Critical patent/EP0933454A3/fr
Withdrawn legal-status Critical Current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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/06—Spinning or twisting machines in which the product is wound-up continuously cap type
    • 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
    • D01H1/42—Guards or protectors for yarns or threads, e.g. separator plates, anti-ballooning devices
    • D01H1/427—Anti-ballooning cylinders, e.g. for two-for-one twist machine

Definitions

  • a disadvantage of this solution is that when lifting Operating speed of the yarn excessive heating of the Yarn and the components that come into contact with it is coming. This excessive warming, mainly in the area of rotating open sling appears, can both the quality of the yarn, in particular that of thermoplastic chemical fibers are meltable at a relatively low temperature, as well Negatively affect the stability of the spinning or twisting process.
  • the invention has for its object at the outset mentioned type and design of the device simple To propose design measures that have the disadvantage mentioned remove.
  • This object is essentially achieved in that at least a sliding surface is provided on part of the boundary wall, the from the area of first contact with the yarn towards lower end of the boundary wall away from the axis of the spindle.
  • this changes the boundary wall touching yarn in a sliding way in favor of Movement along the boundary wall and thus avoids the so-called hard impact.
  • This is noticeably noticeable by that smaller frictional forces between the yarn and the boundary wall arise that are no longer capable, neither unwanted heating nor the chafing of the yarn and / or the boundary wall cause.
  • the sliding surface formed as a conical, concave or convex sliding surface is, because with the help of these surfaces suitable conditions for the Processing a wide range of fiber materials including thermoplastic chemical fibers are created.
  • the sliding surface can expediently also consist of at least two there are connected conical sections. This Execution has essentially the same effect as the concave or convex surface, however, compared to these, is by means of simpler Manufacturing processes can be produced.
  • this stopping area can also be expediently designed such that that it approaches in the direction of the sliding surface of the spindle axis, wherein in this case their conical design is advantageous.
  • an exit of the gap for guiding the rotating open Noose straightened is against Sliding surface an exit of the gap for guiding the rotating open Noose straightened.
  • This gap is by means of a first circumferential Ventilation area on the lower end of the balloon restrictor is arranged, on the other hand by means of an opposite first Rectification area for air delimited on a fixed Spinning ring is arranged, which is assigned to the balloon limiter axially, the first rectification surface for air also being a leading edge of the Yarn forms.
  • Rotation of the balloon limiter creates a gap in the Airflow directed towards the sliding surface and thus an effective one Cooling and cleaning the yarn and the frictional contact with the Yarn coming components, as well as an oriented removal of the from Yarn and these parts loosened impurities.
  • the Exit from the boundary wall and from the lower end of the Balloon delimiter is delimited.
  • Blower device from a second circumferential ventilation surface that the outer periphery of the balloon restrictor is arranged so that it is in Extended towards the lower end, and from a rectification surface for There is air that is immobile and the second at a radial distance encircling ventilation surface. It is according to the invention advantageous if the second rectification surface for air as an extension of the Boundary wall is formed.
  • the boundary wall has a thermal conductivity of at least 0.15 cal. Cm -1 at least on the sliding surface. s -1 . ° C -1 - measured at a temperature of 18 ° C.
  • the spindle 1 consists of a feed device 1 of the fiber structure 2 and a turning and winding device 3 , containing the spindle 4 for a sleeve 5 for winding the yarn P and a bell-shaped balloon limiter 6 , which the spindle 4 with a vertical axis 7 coaxially encloses.
  • the spindle is also the rotor of a spindle electric motor 8 , which is attached by means of a support arm 9 on a spindle bench, not shown, which runs through all spinning devices of the spinning machine and which in a known manner in the direction of the double arrow 10 for the purpose of forming a yarn winding N. moved up and down.
  • constricted part 11 of the shaft of the balloon limiter 6 forms the rotor as part of its drive electric motor 12 , the sense of rotation of the balloon limiter 6 (see arrow 13) being identical to that of the spindle 4 (arrow 14).
  • This drive electric motor 12 is arranged by means of its support arm 15 on a frame construction, not shown, of the spinning device or the spinning machine.
  • the feed device 1 form the outlet rollers 16 of a drafting device, not shown in detail.
  • the clamping line of these exit rollers 16 lies in the axis 7 of the spindle 4 and in this way forms a control point for the start of the formation of the yarn balloon B , so that no further yarn guide is necessary here.
  • the balloon limiter 6 has a working surface 17 on its inner circumference for contact with the yarn P.
  • the yarn P passes directly from this working surface 17 onto the sleeve 5 as a so-called rotating open loop 18 , which is created here as a result of the rotational movement of the yarn P about the axis 7 and the corresponding effect of the centrifugal force.
  • a first circumferential ventilation surface 19a is provided, which is arranged perpendicular to the axis 7 of the spindle 4 .
  • the balloon limiter 6 is then assigned a spinning ring 20 in the axial direction, which is attached by means of its support arm 200 to a frame construction, not shown, of the spinning device or the spinning machine.
  • On the upper part of the spinning ring 20 opposite to the first circumferential ventilation surface 19a, there is a first rectifying surface 21a for air, which at the same time forms a guide element for the yarn P and merges into the inner funnel-shaped part of the spinning ring 20 .
  • the first rectification surface 21a and the first circumferential ventilation surface 19a simultaneously delimit a gap 22 for the rotating open loop 18 , the inlet 23 of which is provided closer to the axis 7 and the outlet 24 further from the axis 7 of the spindle 4 .
  • the boundary wall 25 is also attached by means of its support arm 250 to the immovable frame construction, not shown, of the spinning device or the spinning machine. It is arranged coaxially with the balloon limiter 6 in such a way that it encloses the lower end of the balloon limiter 6 at a radial distance and at the same time overlaps it axially.
  • a sliding surface 26 is provided on the rotational boundary wall 25 in the region of the first contact of the yarn P , which moves away from this region in the direction mm lower end of the boundary wall 25 from the axis 7 of the spindle 4 .
  • the sliding surface 26 is designed as a conical sliding surface 26a , the angle ⁇ , which includes its surface line with the axis 7 of the spindle 4 , advantageously being 10 °.
  • the outlet 24 of the gap 22 is directed against the sliding surface 26 .
  • the boundary wall 25 and the outer wall 27 of the spinning ring 20 delimit a discharge channel 28 for impurities, which can be pneumatically connected to a collecting device for impurities, not shown.
  • the spindle is given 4 revolutions, the number of which is significantly higher than 25,000 .min -1 .
  • the balloon limiter 6 is driven in the same sense and with at least the same speed.
  • the first circumferential ventilation surface 19a which in the case of such a speed of rotation of the balloon limiter 6 has the function of a fan impeller, causes a rapid air movement in the direction out of the balloon limiter 6 .
  • this air movement is rectified by the first rectification surface 21a , so that a first airflow 29a arises which flows through the gap 22 in the direction from the inlet 23 to the outlet 24 .
  • the first air stream 29a After passing through the gap 22 , the first air stream 29a reaches the sliding surface 26 , from which it is deflected into the discharge duct 28 for contaminants.
  • the yarn P runs from the feed device 1 over the working surface 17 of the balloon limiter 6 and the gap 22 to the yarn winding N on the sleeve 5 . It is constantly under the influence of centrifugal force. After reaching the entry region 23 of the gap 22 , the yarn P first runs out of the balloon limiter 6 in the form of a rotating open loop and only from there is it brought to the yarn winding N as a result of the action of the winding train. However, as soon as the yarn P comes out of the balloon limiter 6 , it abuts the boundary wall 25 , which delimits the length of the rotating open loop 18 , in an approximately radial direction. This leads to a sudden change in the speed of movement of the yarn P , that is to say also to a change in the amount of movement thereof, which is related to the formation of an impulse force.
  • the boundary wall 25 had a cylindrical shape, the change in the speed of movement in the radial direction would be absolute, which means that the yarn movement would stop completely and the impulse force would reach its maximum size. The subsequent movement of the yarn in the sense of the rotating open loop would then be accompanied by the creation of friction forces of undesirable size.
  • the above-mentioned sliding surface 26 is located here, so that it takes the place of the first contact of the yarn P with the boundary wall 25 to decompose the speed of movement V of the yarn P and the impulse force F (FIG. 3) into a tangential component Vt or Ft and a normal component Vn or Fn comes, the size of the normal component Fn of the impulse force F being decisive for the magnitude of the frictional forces. From this decomposition it follows that the size of the normal component Fn of the impulse force F is smaller than the size of the impulse force F , so that the frictional forces and the corresponding heating of the yarn P and / or the boundary wall 25 are all the smaller.
  • the tangential component Ft sets the yarn P in motion along the sliding surface 26 and thereby enables its continuous transition into the shape of the rotating open loop 18 .
  • the first air stream 29 a which flows in the region of the sliding surface 26 , also expediently contributes to the restriction of excessive heating of the yarn and the components that come into contact with this yarn. Its effect can then be increased by means of a second air flow 29b , which comes from above into the area along the sliding surface 26 , in order to subsequently leave this area together with the first air flow 29a through the discharge duct 28 (FIG. 3).
  • This second air flow 29b is generated by means of a special blowing device 30 , which consists of a second circumferential ventilation surface 19b , which is arranged on the outer circumference of the balloon limiter 6 in such a way that it spreads towards its lower end, and a second rectification surface 21b for air which immovably surrounds the second circumferential ventilation surface 19b with a radial distance.
  • the second rectification surface 21b is formed by extending the boundary wall 25 in the corresponding direction and the outlet 31 of the blowing device 30 is delimited by the second rectification surface 21b for air and the opposite peripheral part of the lower end of the balloon limiter 6 .
  • the presence of the first air stream 29a, which is supported by the second air stream has, in addition, a further advantage consisting in the fact that this acting on the yarn P centrifugal force assists, on the yarn P at its leakage from the balloon 6 for the purpose of Formation of a rotating open loop 18 at the beginning of the spinning process and then acts to tension the rotating open loop 18 before the yarn winding.
  • the flow rate of the first air stream 29a can also be suitably adjusted by changing the size of the gap 22 , which can be achieved simply by moving the spinning ring 20 in the axial direction at a corresponding distance from the lower end of the Balloon limiter 6 is moved (not shown).
  • the sliding surface 26 can merge into a stopping surface 30a at the point of its largest diameter, which has the same distance from the axis 7 of the spindle 4 over its entire length.
  • the sliding surface 26 can merge into a stopping surface 30b at the location of its largest diameter, which approaches the axis 7 of the spindle 4 in the direction from the sliding surface 26 .
  • the purpose of these stopping surfaces is to keep the yarn or the back bend of the rotating open loop 18 on the sliding surface 26 in any case.
  • Various forms of stopping surfaces are suitable for this purpose. For manufacturing reasons, however, the cheapest is a cylindrical or conical surface, as is also shown in FIGS. 4 and 5.
  • the sliding surface 26 shown in FIGS. 1 to 5 is designed as a conical sliding surface. In practice, however, other forms are also considered, in particular a production curve, the course of which can influence the conditions for certain technological needs of the spinning system.
  • a sliding surface 26 in the form of a concave sliding surface 26b is shown in FIG. 6, which is advantageously particularly suitable for spinning coarser cotton yarns or yarns that consist of a mixture of cotton and chemical fibers, possibly only chemical fibers is. So there are yarns that have a higher length in the rotating open loop 18 , as well as yarns whose fiber material is easily meltable by the heat.
  • a concave sliding surface 26b is advantageous, the production curve of which has the shape of the part of a parabola which runs in such a way that the section located at the point where the yarn P first comes into contact with the sliding surface 26 has the smallest slope. It can be seen from the force decomposition shown in FIG.
  • the normal component Fn is significantly smaller, as a result of which a correspondingly advantageously smaller frictional force also arises when the yarn first contacts the concave sliding surface 26b .
  • the tangential component Ft transfers the yarn in the rotating open loop 18 after reaching the sliding surface 26 to the points further away from the axis 7 . Because the gradient of the production curve increases very rapidly from the point of first contact of the yarn and the concave sliding surface 26b , the movement of the yarn on the sliding surface 26 is stopped, so that the mass of length of the rotating open loop 18 and therefore also the winding tension no longer grow.
  • both the friction conditions in the area of the first contact of the yarn with the sliding surface 26 can be appropriately influenced, and optimal ratios of the tensile forces when winding the yarn can be coordinated. This is particularly important in the case of yarns with a large linear mass, in which the larger mass is reflected in a larger centrifugal force which acts on the yarn in the rotating open loop 18 .
  • the shape of a concave sliding surface 26b can also be used with fine yarns with a proportion of chemical fibers if the spinning process should run at very high speeds, for example at a spindle speed greater than 50,000 .min -1 .
  • FIG. 7 shows an exemplary embodiment of the sliding surface 26 in the form of a convex sliding surface 26c .
  • This convex shape is particularly suitable for spinning fine cotton yarns which have a very small length in the rotating open loop 18 and, as a result, these are influenced by a correspondingly small centrifugal force.
  • the generation curve of the convex sliding surface 26c is then formed, for example, as part of a parabola, the latter is arranged such that the section where the yarn first comes into contact with the sliding surface 26 has the greatest gradient. Therefore, after reaching the convex sliding surface 26c , the yarn can be loaded with a larger normal component Fn of the impulse force F (FIG. 7), because its size will not be undesirably large.
  • the tangential component Ft of the impulse force F transfers the yarn to the places with a smaller gradient, where this tangential component Ft is already growing progressively. This is accompanied by an increase in the mass of the yarn in the rotating open loop 18 and consequently also by a more advantageous increase in the winding tension.
  • FIG. 8 shows an exemplary embodiment of a sliding surface 26 , which consists of two sub-surfaces 26d and 26e connected to one another.
  • this wall has a thermal conductivity of at least 0.15 cal. Cm ⁇ 1 at least in the area of the sliding surface 26 . s -1 . ° C -1 - measured at 18 ° C. Steel or brass, for example, meet this requirement.
  • thermoplastic fiber yarns which have a relatively low melting point
  • these materials are coated with a material of an even higher thermal conductivity, for example silver, in the area having the sliding surface 26 are. In this case, the heat is dissipated 7 times faster.
  • aluminum can also be used as the base material, which is provided with a thin layer of a suitable hard metal, for example with chrome.
  • the spinning device described above can also work as a twisting device.
  • the fiber structure 2 forms individual yarns which are fed by means of feed device 1 from the corresponding supply bobbins, not shown.
  • the twisting process then proceeds in a similar way to the spinning process, but its result is a twist.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP98120516A 1998-01-28 1998-10-29 Dispositif de filage ou de retordage sur broche Withdrawn EP0933454A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ25198 1998-01-28
CZ1998251A CZ286823B6 (cs) 1998-01-28 1998-01-28 Vřetenové spřádací nebo skací zařízení

Publications (2)

Publication Number Publication Date
EP0933454A2 true EP0933454A2 (fr) 1999-08-04
EP0933454A3 EP0933454A3 (fr) 1999-12-29

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EP98120516A Withdrawn EP0933454A3 (fr) 1998-01-28 1998-10-29 Dispositif de filage ou de retordage sur broche

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EP (1) EP0933454A3 (fr)
CZ (1) CZ286823B6 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076727A1 (fr) * 2003-02-28 2004-09-10 Vub A.S. Dispositif de filage ou de retordage avec bouclage
WO2005026419A1 (fr) * 2003-09-15 2005-03-24 Maschinenfabrik Rieter Ag Machine textile comportant un banc d'etirage de compression
CN109735973A (zh) * 2019-01-25 2019-05-10 绍兴华裕纺机有限公司 化纤倍捻锭子的外加捻气圈扩张结构
CN112723018A (zh) * 2021-01-14 2021-04-30 青岛宏大纺织机械有限责任公司 一种自清洁引纱装置
CN113423882A (zh) * 2018-12-18 2021-09-21 N·帕塔萨拉蒂 钢领纺纱机的钢领钢丝圈系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458154A1 (fr) * 1990-05-22 1991-11-27 Maschinenfabrik Rieter Ag Métier à filer
WO1997032065A1 (fr) * 1996-02-28 1997-09-04 Vyzkumny Ústav Bavlnár^¿Sky A.S. Procede de filage ou de retordage sur broche et unite de travail pour la mise en oeuvre du procede

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458154A1 (fr) * 1990-05-22 1991-11-27 Maschinenfabrik Rieter Ag Métier à filer
WO1997032065A1 (fr) * 1996-02-28 1997-09-04 Vyzkumny Ústav Bavlnár^¿Sky A.S. Procede de filage ou de retordage sur broche et unite de travail pour la mise en oeuvre du procede

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076727A1 (fr) * 2003-02-28 2004-09-10 Vub A.S. Dispositif de filage ou de retordage avec bouclage
WO2005026419A1 (fr) * 2003-09-15 2005-03-24 Maschinenfabrik Rieter Ag Machine textile comportant un banc d'etirage de compression
CN113423882A (zh) * 2018-12-18 2021-09-21 N·帕塔萨拉蒂 钢领纺纱机的钢领钢丝圈系统
CN109735973A (zh) * 2019-01-25 2019-05-10 绍兴华裕纺机有限公司 化纤倍捻锭子的外加捻气圈扩张结构
CN112723018A (zh) * 2021-01-14 2021-04-30 青岛宏大纺织机械有限责任公司 一种自清洁引纱装置

Also Published As

Publication number Publication date
CZ25198A3 (cs) 2000-05-17
EP0933454A3 (fr) 1999-12-29
CZ286823B6 (cs) 2000-07-12

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