EP3666942B1 - Guide condenseur avec trois surfaces de contact, module de rouleau-presseur et banc d'étirage - Google Patents

Guide condenseur avec trois surfaces de contact, module de rouleau-presseur et banc d'étirage Download PDF

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Publication number
EP3666942B1
EP3666942B1 EP19204341.2A EP19204341A EP3666942B1 EP 3666942 B1 EP3666942 B1 EP 3666942B1 EP 19204341 A EP19204341 A EP 19204341A EP 3666942 B1 EP3666942 B1 EP 3666942B1
Authority
EP
European Patent Office
Prior art keywords
roller
drafting
condensing
contact surface
unit
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.)
Active
Application number
EP19204341.2A
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German (de)
English (en)
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EP3666942A1 (fr
Inventor
Karlheinz Huber
Gernot Schaeffler
Gerd Stahlecker
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
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Maschinenfabrik Rieter AG
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Publication of EP3666942A1 publication Critical patent/EP3666942A1/fr
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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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • 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
    • D01H5/44—Adjusting drafting elements, e.g. altering ratch
    • 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
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings

Definitions

  • the present invention relates to a compression unit for two next to each other arranged drafting devices of a textile machine with a holder, wherein a first and a second contact surface is arranged on the holder, which can rest on a drafting device roller during operation of the drafting device, a compression area being arranged on each of the contact surfaces is in order to be able to compress a fiber structure guided longitudinally through the compression area, the first and the second contact surface being spaced apart from one another transversely to the compression areas and with a coupling element for a traversing device for traversing the compression unit transversely to the two compression areas, as well as a pressure roller unit with a such a compression unit and a drafting system with such a pressure roller unit.
  • the drafting system comprises mechanical means for compressing the fiber structure drawn in the drafting system, which means have at least one guide surface which is each arranged at an angle to a transport direction of the fiber structure.
  • the drafting system has a traversing device which is coupled to compressor components which have the guide surfaces.
  • a changeable compressor unit for a drafting system of a textile machine in particular a ring spinning machine, is known.
  • the compressor unit has at least one guide with a contact surface which, when the drafting system is in operation, rests against a drafting system roller.
  • a fiber structure can be guided with the guide.
  • the contact surface is advantageously curved and in particular concave, the contact surface being adapted to a jacket surface of the drafting device roller.
  • the guide has a compression area so that the fiber structure is compressed by the compression area. It is displaceable in the axial direction of the drafting roller.
  • the compressor unit is positioned on the drafting roller by means of two contact surfaces which are arranged one behind the other in the running direction of the fiber structure.
  • the positioning of the compactor unit in relation to the drafting system is restricted by the two contact surfaces, in particular by the contact surface arranged in front of the first top roller.
  • the first top roller must be arranged relatively far away from the drafting system and the thread wrapping around the second top roller is quite large.
  • the object of the present invention is thus to create a compression unit, a pressure roller unit and a drafting system, in particular for a ring spinning machine, which enables the compression unit to be positioned in a stable manner and a uniform and stable thread to be spun.
  • the compressor unit according to the invention for two next to each other arranged drafting units of a textile machine, in particular a ring spinning machine has a holder on which a first and a second contact surface are arranged, which can bear against a drafting device roller when the drafting device is in operation.
  • a compression area is arranged on each of the contact surfaces in order to be able to compress a fiber structure guided longitudinally through the compression area.
  • the first and second contact surfaces are spaced apart from one another transversely to the compression areas.
  • a coupling element is arranged on the compressor unit for a traversing device for traversing the compressor unit transversely to the two compression areas.
  • the compressor unit has a third contact surface for supporting the compressor unit when the drafting system is in operation on the drafting system roller.
  • the third contact surface is arranged between the first and the second contact surface and offset along the length of the compression areas.
  • This third contact surface allows the compression unit to be supported very stably on the drafting system roller without the support hindering the close positioning of the compression unit and the pressure roller assembly on the other rollers of the drafting system.
  • This close positioning of the compression unit and the pressure roller assembly on the rollers of the drafting system also has the effect that the take-off roller of the pressure roller assembly can be positioned on the drafting system roller with which it interacts so that the yarn produced is only slightly wrapped around the take-off roller gives.
  • This low looping enables very stable spinning, which on the one hand produces a uniform thread and on the other hand, above all, produces few thread breaks.
  • the third contact surface or the element which has the contact surface forms the coupling element for the traversing device.
  • the contact surface thus guarantees, on the one hand, an exact positioning of the first and second contact surface in relation to the drafting device roller and, moreover, ensures that this is precisely positioned of the two contact surfaces is retained even when the compressor unit traverses. This avoids tilting of the compactor unit in relation to the drafting roller and the guidance of the fiber structure in the compacting area is also ensured during traversing without fibers being able to leave the compacting area laterally.
  • the traversing device thus has a defined contact surface in order to be able to apply a lateral force to the third contact surface.
  • flanks of the third contact surface are beveled, threading the contact surface into the traversing device is very easy.
  • the contact surface is lifted from the drafting system roller together with the pressure roller assembly for opening the drafting system, while the traversing device remains in its original position. If the drafting system is closed, the pressure roller assembly, together with the compactor unit, returns to the drafting system roller.
  • the third contact surface is coupled to the traversing device. This coupling is easier due to possible different positions of the traversing device and the compressor unit if the flanks of the third contact surface are beveled.
  • the third contact surface is arranged on the holder is particularly advantageous. This enables a stable design of the three contact surfaces. It has proven to be particularly advantageous if the holder with the three contact surfaces was injection-molded from plastic or, in the case of a particularly durable design, the contact surfaces themselves made of a wear-resistant material were added to the holder.
  • a receiving element for receiving the compactor unit in a pressure roller unit of the drafting units is arranged on the bracket, it can be ensured when the drafting unit is opened that the compacting unit is lifted from the drafting unit roller together with the pressure roller unit.
  • the receiving element can also serve to have a loading spring arranged thereon, for example, which presses the compactor unit firmly onto the drafting roller in order to allow safe guidance of the fiber structure without individual fibers being able to slide out of the compacting area laterally.
  • the first and the second contact surface preferably each have a curvature which essentially corresponds to a corrugated cylinder section of the drafting system roller intended for them, and the third contact surface has a length which protrudes into this cylinder section in order to be supported on a non-corrugated cylinder section of the drafting system roller to be able to, an exact contact of the first and second contact surface on the drafting roller is guaranteed without there being impermissible gaps.
  • a pressure roller assembly according to the invention for two side-by-side drafting units of a textile machine has a compression unit, a base body and two twin rollers, which consist of two pressure rollers and two take-off rollers and which are received in the base body.
  • the twin rollers can be placed on a common drafting roller.
  • the printing roller unit has at least one means for fastening the compressor unit to the base body of the printing roller unit.
  • the compression unit comprises a first and a second contact surface, which can bear against the drafting system roller when the drafting system is in operation.
  • a compression area is arranged on each of the contact surfaces in order to be able to compress a fiber structure guided longitudinally through the compression area.
  • the first and the second contact surface are transverse to the Compression areas spaced from each other and each arranged between the pressure roller and the take-off roller of the two roller twins.
  • the compression unit is movably arranged transversely to the two compression areas on the base body of the pressure roller assembly.
  • the compressor unit is designed as described above.
  • the compressor unit has a third contact surface for supporting the compressor unit when the drafting system is in operation on the drafting system roller.
  • the third contact surface is arranged between the first and the second contact surface and offset along the length of the compression areas. This arrangement of the third contact surface creates space to arrange the compressor unit rotated around the drafting device roller in different positions, which can be very close to the other drafting device rollers. Particularly when the position is very close to the other drafting rollers, the fixed arrangement of the further thread course in the ring spinning machine results in only a slight thread looping around the output roller. In particular, this enables more stable spinning with only a few thread breaks.
  • a drafting device is equipped with a drafting device roller at the outlet of the drafting device as well as with a pressure roller unit for two adjacent drafting devices of a textile machine, in particular a ring spinning machine.
  • the printing roller unit comprises a base body and two twin rollers, which consist of two printing rollers and two take-off rollers and which are received in the base body.
  • the twin rollers can be placed on the drafting roller.
  • a compression unit has a first and a second contact surface which, when the drafting system is in operation, bear against the drafting system roller.
  • a compression area is arranged on each of the contact surfaces in order to be able to compress a fiber structure guided longitudinally through the compression area.
  • the first and the second contact surface are transverse to the compression areas spaced from each other and are each arranged between the pressure roller and the take-off roller.
  • the drafting system has a traversing device.
  • the compressor unit comprises a coupling element for connecting the compressor unit to the traversing device and for traversing the compressor unit transversely to the two compression areas.
  • the compressor unit is designed as described above. It has a third contact surface for supporting the compressor unit when the drafting system is in operation on the drafting system roller.
  • the third contact surface is arranged between the first and the second contact surface and offset along the length of the compression areas.
  • the third contact surface forms the coupling element for the traversing device, then stable, tilt-free traversing of the compressor unit on the drafting roller is possible.
  • threading in and out, opening and closing the drafting system can be carried out quickly and easily.
  • the third contact surface advantageously has flanks for contacting the traversing device, this also helps for precise traversing of the compressor unit, since the flanks enable very good force introduction into the compressor unit.
  • the traversing device has a traversing tongue which engages around the third contact surface as a fork or eye.
  • the coupling between the compressor unit and the traversing tongue of the traversing device is particularly important when opening and closing the drafting system possible particularly quickly and reliably.
  • the traversing tongue as a fork or eye, a reliable coupling of the compressor unit with the traversing device is ensured at the same time.
  • the fork or eye has cheeks which interact with the flanks of the third contact surface. In this way, a flat contact can be established between the traversing tongue and the compressor unit, which ensures reliable traversing.
  • the threading of the third contact surface into the traversing device is particularly easy when the pressure roller assembly is placed on the drafting roller.
  • the beveled flanks or cheeks can still be safely threaded.
  • the traversing tongue preferably has a support surface for resting on the drafting device roller, the position of the traversing tongue in the horizontal direction is determined by the drafting device roller.
  • the traversing tongue is displaced in the axial direction of the drafting device roller, the traversing tongue is thus guided through the drafting device roller.
  • the compressor unit is coupled to the traversing tongue, this allows the third support surface or the element of the compressor unit which comprises the third support surface to be inserted into the corresponding opening of the traversing tongue without the traversing tongue being able to deviate in the vertical direction.
  • the pressure roller forms a negative curtain on the drafting unit roller is particularly advantageous.
  • the angle between a drafting system line and a line which runs through the center points of the drafting system roller and the pressure roller is less than 90 °. This achieves particularly good guidance of the fiber structure when it enters a nipping point between the pressure roller and the drafting device roller.
  • take-off roller is wrapped around the draw-off roller at an angle of less than 90 °, preferably less than 30 °, by a thread emerging from the drafting device. This significantly increases the spinning stability, since fewer thread breaks are to be expected.
  • Figure 1 shows a longitudinal section through a closed drafting device 1 according to the invention.
  • the drafting device 1 has a pair of input rollers 2, a pair of drafting aprons 3 and output rollers 4.
  • a pressure roller 6 and a take-off roller 7 are arranged on a lower drafting device roller 5.
  • a roller 2.2 of the input roller pair 2 shown above, an upper apron 3.2 and the pressure roller 6 and the take-off roller 7 rest on a lower roller 2.1, an apron 3.1 and the drafting roller 5.
  • the printing roller 6 and the take-off roller 7 are arranged in a printing roller assembly 8.
  • the pressure roller assembly 8 comprises a base body 9 and a spring 10 which acts on a compressor unit 11.
  • Upper roller 2.2, upper apron 3.2 and the pressure roller assembly 8 with the pressure roller 6 and the take-off roller 7 are fastened in a pressure arm, not shown, of the drafting system 1.
  • the pressure roller 6 and the take-off roller 7 are each designed as roller twins, i.e. This means that two adjacent drafting units 1 can be operated via a pressure arm and that two of the rollers 6, 7 are connected to one another via a common axis.
  • the compressor unit 11 arranged in the pressure roller assembly 8 has a first contact surface 12, a second contact surface 13 (not visible in this illustration) and a third contact surface 14.
  • the first and second contact surfaces 12, 13 are each located between the pressure roller 6 and the take-off roller 7.
  • the third contact surface 14 is arranged between the axially spaced pressure rollers 6 of the roller twin.
  • the first, second and third contact surfaces 12, 13, 14 are supported on the drafting device roller 5. They preferably have a curvature which essentially corresponds to the cylindrical shape of the drafting device roller 5.
  • the spring 10 With the spring 10, the compressor unit 11 with its contact surfaces 12, 13 and 14 pressed onto the drafting device roller 5.
  • the spring 10 is rotatably connected to a receiving element 23 of the compressor unit 11.
  • the first, second and third contact surfaces 12, 13 and 14 are arranged on a holder 24 of the compressor unit 11. While the first and second contact surfaces 12, 13 are spaced apart from one another in the axial direction of the pressure roller 6 and the take-off roller 7, the third contact surface 14 is arranged and located essentially centrally between the two first and second contact surfaces 12, 13 in the axial direction spaced from these in the circumferential direction of the drafting roller 5. As a result, the third contact surface 14 is able to effect a positionally accurate support of the first and second contact surface 12, 13. The first and second contact surface 12, 13 are thus arranged very stably on the drafting device roller 5 due to the third contact surface 14. This means that they can be assigned to one another very precisely. The precisely positioned arrangement of the first and second contact surface 12, 13 by the third contact surface 14 ensures that a fiber structure 17 can be reliably guided in the compressor unit 11 without fibers of the fiber structure 17 being able to escape laterally from the compressor unit 11.
  • a particular advantage of this support of the contact surfaces 12, 13 by the third contact surface 14 is that the pressure roller unit 8 can be rotated around the drafting unit roller 5 in such a way that a negative curtain angle 20 of the printing roller 6 with respect to the drafting unit roller 5 can be set.
  • the negative curtain angle 20 means that the center of the pressure roller 12 is arranged in front of the center of the pressure roller 5 in relation to the running direction of the fiber structure 17.
  • This also has the effect that a wrap angle 21 of the fiber structure 17 on the take-off roller 7 is small, ie less than 90 °, preferably less than 30 °.
  • a very stable spinning is brought about by this small angle of wrap 21, since thread breaks can be significantly reduced as a result.
  • Negative curtain angles 20 or the printing roller assembly 8 rotated in this way are possible because the first and second contact surfaces 12, 13 are not supported between the pressure roller 6 and the apron 3.2, but laterally offset between the pressure rollers 6 of two adjacent drafting units 1.
  • the compressor unit 11 is coupled to a traversing tongue 15 of the traversing device.
  • the traversing tongue 15 is also connected to a compressor 16 which guides the fiber structure 17 into the drafting system 1.
  • the coupling of the traversing tongue 15 to the compressor unit 11 takes place with a fork 18 which engages around the compressor unit 11 in the area of the third contact surface 14.
  • the third contact surface 14 thus forms a coupling element for the traversing device.
  • the coupling is designed in such a way that the compressor unit 11 can slide upwards out of the traversing tongue 15 or the fork 18 when the drafting device 1 is opened. If the drafting system 1 is closed again, the compressor unit 11 or the third contact surface 14 is reinserted into the fork 18 of the traversing tongue 15.
  • the traversing tongue 15 is able, when it is moved back and forth in the axial direction of the rollers, to move the compressor unit 11 back and forth in the same way.
  • This traversing of the compressor unit 11 has the effect that the fiber structure 17 is clamped at different axial points of the pressure roller 6 or take-off roller 7 on the drafting unit roller 5.
  • the wear on the pressure roller 6 or take-off roller 7 is reduced as a result, since the contact points can be constantly changed.
  • the traversing tongue 15 or the fork 18 has a contact surface 19 with which it rests on the drafting device roller 5. This bearing surface 19 thus slides back and forth in the axial direction when the traversing tongue 15 is traversed axially on the drafting device roller 5.
  • FIG. 2 shows a longitudinal section through the drafting system 1 from Figure 1 in the open position.
  • the upper input roller 2.2, the upper apron 3.2 and the pressure roller assembly 8 with the pressure roller 6 and the take-off roller 7 are lifted from the lower roller 2.2, the apron 3.1 and the drafting unit roller 5.
  • the compressor unit 11, together with the pressure roller assembly 8 is removed from the coupling with the traversing tongue 15 or its fork 18.
  • the third contact surface 14 is thus removed from the fork 18.
  • the traversing tongue 15 and the fork 18 remain on the drafting roller 5 by means of the support surface 19.
  • the compressor unit 11 is lowered again together with the other components, whereby the third contact surface 14 comes back into the fork 18, rests on the pressure roller 5 and can be guided laterally through the fork 18, as in FIG Figure 1 shown.
  • FIG 3 a view from below of a compressor unit 11 according to the invention is shown.
  • the central component of the compressor unit 11 is the holder 24.
  • the first, second and third contact surfaces 12, 13 and 14 are arranged at the respective ends of the holder 24.
  • a compression area 22 is present in each of the first and second contact surfaces 12, 13.
  • the fiber structure 17 arrives in this compression area 22 and is compressed therein.
  • the compressor unit 11 is connected to the pressure roller assembly 8 by means of the spring 10 (see Figure 1 and 2 ).
  • the coupling between the traversing tongue 15 and the compressor unit 11 takes place via the holder 24 or the shape of the holder 24 in the area of the third bearing surface 14.
  • the fork 18 of the traversing tongue 15 encompasses the holder 24 or the third bearing surface 14 laterally.
  • the contact points between the third contact surface 14 and the fork 18 of the traversing tongue 15 are cheeks 25 of the tongue 15 and flanks 33 of the third contact surface 14 or the holder 24. It is advantageous if there is little play between the cheeks 25 and the flanks 33 is to facilitate threading when coupling the compressor unit 11 with the traversing tongue 15.
  • the cheeks 25 are designed to be beveled for easier threading.
  • the cheeks 25 are designed to be beveled for easier threading.
  • Figure 4 shows a plan view of lower rollers of the drafting system 1 according to the invention and the traversing device which comprises the traversing tongue 15 and a traversing rod 28.
  • the illustration also shows two drafting devices 1 arranged parallel to one another.
  • the traversing tongue 15 is arranged between the two drafting devices 1.
  • the traversing tongue 15 is also attached to the traversing rod 28 and can be traversed back and forth in the direction of the double arrow C.
  • the traversing tongue 15 now has an eyelet 29 instead of a fork 18.
  • the contact surface 19 of the traversing tongue 15 can be made wider and more stable through the eyelet 29.
  • the representation of this Figure 4 also shows the structure of the drafting unit roller 5.
  • This drafting unit roller 5 has cylinder sections which have corrugated areas 26 and smooth areas 27.
  • the first and second contact surfaces 12, 13 lie on the corrugated areas 26 on the drafting device roller 5.
  • the third contact surface 14, on the other hand, is located between the two drafting devices 1 in the smooth area or cylinder section 27 of the drafting device roller 5 and is supported there.
  • a dashed line shows a pressure line 30 for the pressure roller 6 and a pressure line 31 for the take-off roller 7.
  • the pressure line 30 for the pressure roller 6 is offset in the direction of the lower aprons 3.1 with respect to a center line S of the drafting device roller 5.
  • a curtain V thus becomes negative. This is possible because the support for the first and second contact surfaces 12, 13 is not arranged between the apron 3.1 and the pressure roller 6, but laterally offset thereto in the smooth area 27 of the drafting unit roller 5.
  • This also causes the pressure line 31 of the take-off roller 7 to migrate closer to the center line S and thus has the effect that the wrapping around the take-off roller 7 by the fiber structure 17 is only very slight.
  • FIG. 5 a sectional front view of the drafting device 1 according to the invention is shown.
  • the cut is made through the first, second and third contact surfaces 12, 13 and 14.
  • the compression area 22 can be seen, which forms a channel through which the fiber structure 17 can be conveyed.
  • the two contact surfaces 12 and 13 lie on the corrugated area 26 of the drafting device roller 5.
  • the third contact surface 14 can be seen between the two first and second contact surfaces 12 and 13. This third contact surface 14 rests in the smooth area 27 of the drafting device roller 5.
  • the support surface 19 of the traversing tongue 15 also rests in this area.
  • both the cheeks 25 of the traversing tongue 15 and the flanks 33 of the third contact surface 14 are beveled. This makes it very easy to thread the third contact surface 14 into the fork 18 or eyelet 29 of the traversing tongue 15, even if there should be a certain offset between the traversing tongue 15 and the third contact surface 14.
  • the corrugated area 26 of the drafting roller 5 has a slightly larger diameter than the smooth area 27 of the drafting roller 5.
  • a corresponding height offset h is between the first and second contact surface 12, 13 and the third contact surface 14 are present.
  • the third contact surface 14 or its holder 24 thus has a length which compensates for this difference in diameter of the drafting device roller 5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (15)

  1. Unité de condensation pour deux dispositifs d'étirage (1) d'une machine textile disposés l'un à côté de l'autre,
    - avec un support de fixation (24),
    - dans laquelle une première et une deuxième surfaces d'appui (12, 13) sont disposées sur le support de fixation (24), lesquelles peuvent venir en appui contre un cylindre d'étirage (5) pendant un fonctionnement du dispositif d'étirage (1),
    - dans laquelle une zone de condensation (22) est disposée sur chacune des surfaces d'appui (12, 13) afin de pouvoir condenser un ensemble de fibres (17) guidé longitudinalement à travers la zone de condensation (22),
    - dans laquelle les première et deuxième surfaces d'appui (12, 13) sont espacées l'une de l'autre transversalement par rapport aux zones de condensation (22), et
    - avec un élément de couplage pour un dispositif de va-et-vient permettant de déplacer en va-et-vient l'unité de condensation (11) transversalement par rapport aux deux zones de condensation (22),
    caractérisée en ce que
    - l'unité de condensation (11) présente une troisième surface d'appui (14) destinée à soutenir l'unité de condensation (11) sur le cylindre d'étirage (5) pendant un fonctionnement du dispositif d'étirage (1), et
    - dans laquelle la troisième surface d'appui (14) est disposée entre les première et deuxième surfaces d'appui (12, 13) et décalée longitudinalement par rapport aux zones de condensation (22).
  2. Unité de condensation selon la revendication précédente, caractérisée en ce que la troisième surface d'appui (14) forme l'élément de couplage pour le dispositif de va-et-vient.
  3. Unité de condensation selon l'une quelconque ou plusieurs des revendications précédentes, caractérisée en ce que la troisième surface d'appui (14) présente des flancs (33) destinés à entrer en contact avec le dispositif de va-et-vient.
  4. Unité de condensation selon l'une quelconque ou plusieurs des revendications précédentes, caractérisée en ce que les flancs (33) sont biseautés pour l'enfilage dans le dispositif de va-et-vient.
  5. Unité de condensation selon l'une quelconque ou plusieurs des revendications précédentes, caractérisée en ce que la troisième surface d'appui (14) est disposée sur le support de fixation (24).
  6. Unité de condensation selon l'une quelconque ou plusieurs des revendications précédentes, caractérisée en ce qu'un élément d'accueil (23) destiné à accueillir l'unité de condensation (1) dans un ensemble de cylindres presseurs (8) des dispositifs d'étirage (1) est disposé sur le support de fixation (24).
  7. Unité de condensation selon l'une quelconque ou plusieurs des revendications précédentes, caractérisée en ce que les première et deuxième surfaces d'appui (12, 13) présentent chacune une courbure correspondant sensiblement à une portion de cylindre cannelée (26) du cylindre d'étirage (5) qui leur est attribué, et la troisième surface d'appui (14) présente une longueur qui fait saillie dans ladite portion de cylindre (26) pour venir en appui sur une portion de cylindre non cannelée (27) du cylindre d'étirage (5).
  8. Ensemble de cylindres presseurs pour deux dispositifs d'étirage (1) d'une machine textile disposés l'un à côté de l'autre,
    - avec une unité de condensation (11),
    - avec un corps de base (9) et
    - avec deux paires de cylindres qui se composent de deux cylindres presseurs (6) et de deux cylindres dévideurs (7) et qui sont logées dans le corps de base (9), et les paires de cylindres peuvent être montées sur un cylindre d'étirage commun (5),
    - dans laquelle l'ensemble de cylindres presseurs (8) présente au moins un moyen pour la fixation de l'unité de condensation (11) sur le corps de base (9) de l'ensemble de cylindres presseurs (8) et
    - dans laquelle l'unité de condensation (11) présente une première et une deuxième surfaces d'appui (12, 13) qui peuvent venir en appui contre le cylindre d'étirage (5) pendant un fonctionnement du dispositif d'étirage (1), et
    - dans laquelle une zone de condensation (22) est disposée sur chacune des deux surfaces d'appui (12, 13) afin de pouvoir condenser un ensemble de fibres (17) guidé longitudinalement à travers la zone de condensation (22),
    - dans laquelle les première et deuxième surfaces d'appui (12, 13) sont espacées l'une de l'autre transversalement par rapport aux zones de condensation (22) et sont disposées chacune entre le cylindre presseur (6) et le cylindre dévideur (7) des deux paires de cylindres et
    - dans laquelle l'unité de condensation (11) est disposée de manière mobile sur le corps de base (9) de l'ensemble de cylindres presseurs (8), transversalement par rapport aux deux zones de condensation (22),
    caractérisé en ce que
    - l'unité de condensation (11) se présente sous une forme selon les revendications précédentes, sachant
    - qu'elle présente une troisième surface d'appui (14) pour soutenir l'unité de condensation (11) sur le cylindre d'étirage (5) pendant un fonctionnement du dispositif d'étirage (1) et
    - que la troisième surface d'appui (14) est disposée entre les première et deuxième surfaces d'appui (12, 13) et décalée longitudinalement par rapport aux zones de condensation (22).
  9. Dispositif d'étirage avec un cylindre d'étirage (5) à la sortie du dispositif d'étirage (1) ainsi qu'un ensemble de cylindres presseurs (8) pour deux dispositifs d'étirage (1) d'une machine textile disposés l'un à côté de l'autre,
    - dans lequel l'ensemble de cylindres presseurs (8) présente un corps de base (9) et deux paires de cylindres, qui se composent de deux cylindres presseurs (6) et de deux cylindres dévideurs (7) et qui sont logées dans le corps de base (9), et les paires de cylindres peuvent être montées sur le cylindre d'étirage (5),
    - dans lequel une unité de condensation (11) présente une première et une deuxième surfaces d'appui (12, 13) qui viennent en appui contre le cylindre d'étirage (5) pendant un fonctionnement du dispositif d'étirage (1), et
    - dans laquelle une zone de condensation (22) est disposée sur chacune des deux surfaces d'appui (12, 13) afin de pouvoir condenser un ensemble de fibres (17) guidé longitudinalement à travers la zone de condensation (22),
    - dans lequel les première et deuxième surfaces d'appui (12, 13) sont espacées l'une de l'autre transversalement par rapport aux zones de condensation (22) et sont disposées chacune entre le cylindre presseur (6) et le cylindre dévideur (7) et
    - dans lequel le dispositif d'étirage (1) présente un dispositif de va-et-vient et
    - l'unité de condensation (11) présente un élément de couplage pour le dispositif de va-et-vient destiné à déplacer en va-et-vient l'unité de condensation (11) transversalement aux deux zones de condensation (22),
    caractérisé en ce que
    - l'unité de condensation (11) se présente sous une forme selon les revendications 1 à 7 précédentes, sachant
    - qu'elle présente une troisième surface d'appui (14) pour soutenir l'unité de condensation (11) sur le cylindre d'étirage (5) pendant un fonctionnement du banc d'étirage (1) et
    - que la troisième surface d'appui (14) est disposée entre les première et deuxième surfaces d'appui (12, 13) et décalée longitudinalement par rapport aux zones de condensation (22).
  10. Dispositif d'étirage selon la revendication précédente, caractérisé en ce que la troisième surface d'appui (14) forme l'élément de couplage pour le dispositif de va-et-vient.
  11. Dispositif d'étirage selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que la troisième surface d'appui (14) présente des flancs (33) destinés à entrer en contact avec le dispositif de va-et-vient.
  12. Dispositif d'étirage selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le dispositif de va-et-vient présente une languette de va-et-vient (15) qui entoure la troisième surface d'appui (14) sous la forme d'une fourche (18) ou d'un œillet (29) et/ou présente une surface d'appui (19) destinée à venir en appui sur le cylindre d'étirage (5).
  13. Dispositif d'étirage selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que la fourche (18) ou l'œillet (29) présente des joues (25) qui coopèrent avec les flancs (33) de la troisième surface d'appui (14), et dans lequel les flancs (33) et/ou les joues (25) sont de préférence biseautés pour enfiler la troisième surface d'appui (14) dans le dispositif de va-et-vient lors de la fixation de l'ensemble de cylindres presseurs (8) sur le cylindre d'étirage (5).
  14. Dispositif d'étirage selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le cylindre presseur (6) forme un surplomb négatif (V) par rapport au cylindre d'étirage (5).
  15. Dispositif d'étirage selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le cylindre dévideur (7) est enlacé sous un angle (21) inférieur à 90°, de préférence inférieur à 30°, par un ensemble de fibres (17) sortant du banc d'étirage (1).
EP19204341.2A 2018-10-25 2019-10-21 Guide condenseur avec trois surfaces de contact, module de rouleau-presseur et banc d'étirage Active EP3666942B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018126635.9A DE102018126635A1 (de) 2018-10-25 2018-10-25 Verdichtereinheit, Druckwalzenaggregat und Streckwerk

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EP3666942A1 EP3666942A1 (fr) 2020-06-17
EP3666942B1 true EP3666942B1 (fr) 2021-04-28

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EP (1) EP3666942B1 (fr)
CN (1) CN111101244B (fr)
DE (1) DE102018126635A1 (fr)

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JPH10237725A (ja) * 1997-02-25 1998-09-08 Murata Mach Ltd ドラフトローラの駆動装置
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Publication number Publication date
CN111101244A (zh) 2020-05-05
CN111101244B (zh) 2022-11-25
DE102018126635A1 (de) 2020-04-30
EP3666942A1 (fr) 2020-06-17

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