EP4101955B1 - Riemchenstreckwerk einer textilmaschine mit einem oberriemchenhalter - Google Patents

Riemchenstreckwerk einer textilmaschine mit einem oberriemchenhalter Download PDF

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Publication number
EP4101955B1
EP4101955B1 EP22177720.4A EP22177720A EP4101955B1 EP 4101955 B1 EP4101955 B1 EP 4101955B1 EP 22177720 A EP22177720 A EP 22177720A EP 4101955 B1 EP4101955 B1 EP 4101955B1
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EP
European Patent Office
Prior art keywords
apron
receptacle
tensioning element
section
deflection
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
EP22177720.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4101955A1 (de
Inventor
Karoline Günther
Chandrassekaran Seshayer
Peter Eggers
Sarah MEISSNER
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.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Spinning Solutions GmbH and Co KG
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 Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Spinning Solutions GmbH and Co KG
Publication of EP4101955A1 publication Critical patent/EP4101955A1/de
Application granted granted Critical
Publication of EP4101955B1 publication Critical patent/EP4101955B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
    • 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
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
    • D01H5/88—Cradles; Tensors

Definitions

  • Drafting systems are known in a wide variety of designs from the state of the art. They are used to stretch or draw a fiber sliver, which reduces the cross-section of the fiber sliver. During the drafting process, the fibers must be transported next to each other as evenly as possible in order to achieve a uniform fiber sliver, which is a prerequisite for producing a uniform yarn.
  • the drafting systems usually have several pairs of rollers arranged one after the other, which are arranged next to one another and clamp the fiber sliver between them.
  • a pair of rollers usually consists of a lower roller and an upper pressure roller attached to the lower roller, one of which is driven and the other is set in rotation via the pressure contact.
  • the fiber sliver is drawn by increasing the peripheral speed from pair of rollers to pair of rollers in the transport direction of the fiber sliver, which is determined by the direction of rotation of the pair of rollers, with the different peripheral speeds of the pairs of rollers immediately following one another in the transport direction determining the draft ratio.
  • the lower rollers are each arranged on a support device, in particular a drafting system carriage, which, arranged one behind the other in the transport direction of the fiber sliver, form a drafting system lower part of a drafting system.
  • a support device in particular a drafting system carriage, which, arranged one behind the other in the transport direction of the fiber sliver, form a drafting system lower part of a drafting system.
  • apron drafting systems in which an apron is guided around an upper and lower roller in the area of the main drafting zone, which is deflected in the return direction towards the output pair of rollers by an apron guide device so that the sliver can be guided between the upper and lower aprons.
  • the belts which are designed as endless belts, are usually guided around a tensioning device that holds the belts at the pre-tension required for operation.
  • tensioning devices are usually aligned axially to the running direction and therefore influence the depth of the guided belt in the running direction, which hinders precise spacing settings. If devices for adjusting the tension of the belt are not used, this requires a very small tolerance of the belt length in order to ensure proper operation.
  • the invention is based on the object of providing an apron stretching system comprising an upper apron holder in which tolerances in the apron length can be compensated for quickly and variably in a simple manner.
  • the apron guide unit has a receptacle assigned to the input section for a replaceable tensioning element that can be brought into pressure contact with an inner side of the upper apron, as well as the tensioning element.
  • the receptacle can preferably be in the area of the input section with the
  • the strap guide section can be designed integrally or as a separate component that can be coupled to the input section, for example via a support unit, as described in more detail below.
  • the holder and the tensioning element exchangeably accommodated in the holder are designed to guide the upper strap via the tensioning element and the deflection section at a distance from the area of the strap guide section enclosed by the tensioning element and the deflection section.
  • the upper strap in the operating state of the upper strap holder, the upper strap is guided by the tensioning element, forming an air gap between the tensioning element and the deflection section and between the inside of the upper strap and the opposite surface side of the strap guide section.
  • the guide plane formed by the tensioning element and the deflection section which corresponds to an inner surface section of the supplying upper strap, runs at a distance from the surface section of the strap guide section that is enclosed by the tensioning element and the deflection section in the guide direction or along the guide plane.
  • the tensioning element which can generate a uniform tension depending on its design due to its arrangement within the upper apron during operation, enables the apron tension to be individually adjusted depending on the design of the tensioning element. Tolerances in the apron length can be compensated for by dimensioning the tensioning element, whereby the apron tension can be adjusted with high precision.
  • the apron guide section has a further receptacle at its end forming the deflection section, which is designed to accommodate a replaceable deflection element for deflecting the circumferentially guided upper apron, as well as the deflection element.
  • This makes it easy to support the guidance of the upper apron, which is raised to the surface side of the apron guide section.
  • the deflection section or the deflection element with the further receptacle are consequently designed for defined guidance of the upper apron.
  • the use of a deflection element designed separately from the apron guide section also enables exact adjustment of the distance of the apron to the downstream output roller pair, which is crucial for uniform yarn and piecing quality.
  • the use of the deflection element allows the distance to be set reproducibly and precisely.
  • the deflection element can have an additional tensioning element. by means of which the adjustment of the strap tension can be supported with high precision.
  • the design of the tensioning element and its arrangement on the top strap holder in the area of the entry section of the strap guide section as well as the design of the deflection element and its arrangement on the top strap holder in the area of the deflection section of the strap guide section are basically freely selectable.
  • the receptacle and/or the further receptacle is designed by two guide means arranged at a distance from one another for the lateral guidance of the top strap, and that the tensioning element or the deflection element is designed as a guide rod arranged in the area between the guide means, which extends in its longitudinal axis direction in the direction of the guide means into the receptacle or further receptacle, wherein the two guide means are arranged in particular on a lateral edge of the strap guide section and in particular are formed integrally with it.
  • the alignment of the guide rod to the guide means running transversely to the direction of rotation of the top apron ensures that the tension applied to the top apron by the guide rod is evenly applied, whereby the transverse alignment of the guide rod to the guide means guiding the top apron laterally ensures that no forces acting transversely to the direction of rotation of the top apron are applied to the top apron by the guide rod.
  • the transverse alignment effectively prevents the top apron from twisting in the contact area with the guide rod.
  • the tensioning element or the deflection element is particularly preferably accommodated in the respective receptacle or further receptacle perpendicular to the direction of rotation of the top apron, whereby pressure forces directed exclusively in the guide direction are applied to the tensioning element and its receptacle or to the deflection element and its further receptacle.
  • the arrangement of the tensioning element or the deflection element, in particular as a respective or individually designed guide rod, can basically be carried out in any way.
  • the tensioning element and/or the deflecting element has at least one holding pin, wherein the receptacle or the further receptacle is designed to receive the holding pin for the exchangeable reception of the tensioning element or the deflecting element, wherein the at least one holding pin extends transversely to a guide web of the tensioning element or the deflecting element that guides the upper strap.
  • the tensioning element or the deflecting element forms a cross-sectional T-shape in a cutting plane running along the guide web through the guide web and the holding pin.
  • such a cross-sectional shape changes into a ⁇ -shape, which allows greater stability than the T-cross section.
  • a support unit which is assigned to the strap guide unit and which forms the receptacle for the tensioning element or the further receptacle for the deflection element and on which the tensioning element or deflection element, in particular designed as a guide rod, is detachably arranged, wherein the support unit is supported on the upper strap holder, in particular on the strap guide unit.
  • a support unit is arranged on the top apron holder, which is designed to detachably and thus replaceably hold the tensioning element or the deflection element.
  • the use of a support unit ensures the possibility of adapting it to the design of the tensioning element or the deflection element and of being able to easily replace it to adjust the desired apron tension or to adjust the distance to the output roller.
  • the support unit holding the tensioning element or the deflection element is supported on the top apron holder at such a point that, when the top apron holder is in operation, a reliable attachment of the tensioning element or the deflection element to the inside of the top apron is ensured and, at the same time, a simple replacement of the same can be carried out if necessary.
  • the support unit is arranged such that the receptacle or the further receptacle is arranged adjacent to the lateral guide means in the direction of rotation or guide direction of the upper apron.
  • the tensioning element in the holder and/or the deflection element in the further holder is pre-tensioned, in particular spring-tensioned, mounted or accommodated in a direction opposite to the apron guide section, i.e. in the direction of the top apron.
  • a pre-tensioned attachment of the tensioning element or the deflection element on an inner side of the top apron ensures that it can be pre-tensioned in a particularly uniform manner and that fluctuations occurring during operation can be compensated by the pre-tension, in particular spring pre-tension, so that a particularly trouble-free operation of an apron stretching system equipped with the top apron holder can be guaranteed.
  • a spring unit is provided associated with the holder and/or the further holder.
  • the spring unit can also preferably be arranged in the holder or the further holder.
  • the spring unit makes it possible to replace the tensioning element or the deflecting element if necessary while maintaining a pre-tension generated by the spring unit, so that a quick adjustment to different top straps can be achieved in a simple and convenient manner. It is particularly advantageous that the spring unit is designed to adjust the pre-tension acting on the tensioning element or the deflecting element.
  • the possibility of adjusting the pre-tension makes it possible to make adjustments to the apron length and the apron tension to be achieved or the distance to the downstream output roller in a particularly precise and convenient manner, without it being absolutely necessary to replace the tensioning element or the deflection element to make the desired adjustment.
  • the receptacle and/or the further receptacle is designed for the exchangeable reception of at least one adapter element, wherein the at least one adapter element can be coupled to the clamping element and/or to the deflection element in order to recorded state to change or adapt the position of the tensioning element or the deflection element relative to the strap surface section.
  • the strap tension can be individually adjusted by using different adapter elements. The selected strap tension can thus be easily determined by exchanging the differently designed adapter elements.
  • the adapter elements can, for example, be designed with slots so that they can be plugged onto the tensioning element or the deflection element or onto a mounting pin assigned to them and easily removed again if necessary.
  • Figure 1 is a perspective view of a top strap holder 1 of a not shown here shown apron stretching system according to an embodiment example.
  • the upper apron holder 1 has two upper roller bearing units 2 arranged at a distance from one another, which are connected to a base support 9 of an apron guide unit 4.
  • the apron guide unit 4 has an apron guide section 11, which is laterally delimited by web-like guide means 5, which, in an operating state of the top apron holder 1, delimit a lateral travel path of an endless top apron (not shown here).
  • the top apron is guided over the top roller 3 in the direction of the apron guide section 11.
  • the apron guide section 11 has an input section 11a and a deflection section 6 spaced apart from it.
  • the deflection section 6 comprises a rod-shaped deflection element 6a, around which the top apron is guided.
  • the deflection element 6a is held in a replaceable manner in a further holder (not shown).
  • the deflection element 6a is designed as a guide rod. Depending on the design of the deflection element 6a, the distance to a top roller of a pair of output rollers (not shown) of the apron drafting system, which is arranged downstream in the fiber sliver transport direction, can be variably adjusted.
  • a tensioning element 7 designed as a guide rod extends between the guide means 5 and is detachably connected to the guide means 5.
  • the tensioning element 7 rests against an inner side of the upper strap and causes the strap pre-tension via its contact surface.
  • the tensioning element 7 is held in receptacles 10 in an exchangeable manner, the receptacles 10 being formed by the guide means 5 in this preferred embodiment.
  • the receptacle can be part of a support unit assigned to the strap guide unit 4, on which the tensioning element 7 is detachably arranged, the support unit being supported on the upper strap holder 1.
  • the receptacle can be arranged adjacent or next to the guide means 5 in the guide direction.
  • the belt tension as well as the distance to the output roller can be adjusted by arranging different adapter elements 8a, 8b, 8c (see Fig. 2a to 2c ) can be changed accordingly on the clamping element 7 or the deflection element 6a, whereby the respective Adapter element 8a, 8b, 8c can be received by the holder 10 or the further holder.
  • the adapter elements 8a, 8b, 8c when received and coupled to the tensioning element 7 or the deflection element 6a, cause a change in position of the latter relative to the apron surface section 11 and thus, depending on the adapter element 8a, 8b, 8c used or its design, the apron tension or the distance to the output roller.
  • the adapter elements 8a, 8b, 8c can be detachably connected to the tensioning element 7 and/or the deflection element 6a, whereby they can be plugged on and thus easily removed from them if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP22177720.4A 2021-06-10 2022-06-08 Riemchenstreckwerk einer textilmaschine mit einem oberriemchenhalter Active EP4101955B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU102828A LU102828B1 (de) 2021-06-10 2021-06-10 Oberriemchenhalter für ein Riemchenstreckwerk einer Textilmaschine

Publications (2)

Publication Number Publication Date
EP4101955A1 EP4101955A1 (de) 2022-12-14
EP4101955B1 true EP4101955B1 (de) 2024-06-05

Family

ID=77127026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22177720.4A Active EP4101955B1 (de) 2021-06-10 2022-06-08 Riemchenstreckwerk einer textilmaschine mit einem oberriemchenhalter

Country Status (5)

Country Link
US (1) US20220396900A1 (enrdf_load_stackoverflow)
EP (1) EP4101955B1 (enrdf_load_stackoverflow)
JP (1) JP2022189783A (enrdf_load_stackoverflow)
CN (1) CN115467059B (enrdf_load_stackoverflow)
LU (1) LU102828B1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU503225B1 (de) * 2022-12-20 2024-06-20 Saurer Spinning Solutions Gmbh & Co Kg Vorrichtung zum Positionieren einer Walze oder für das Spannen eines Riemens, Streckvorrichtung, Spinneinheit und Spinnmaschine umfassend eine solche Vorrichtung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686938A (en) * 1949-02-02 1954-08-24 Noguera
US2777168A (en) * 1951-08-09 1957-01-15 Noguera
CH300542A (de) * 1952-03-06 1954-08-15 Suddeutsche Spindelwerke Zinse Zweiriemchenstreckwerk mit zapfenlosen Oberwalzen für Textilmaschinen.
FR1444033A (enrdf_load_stackoverflow) * 1964-05-08
DE6805009U (de) * 1968-11-02 1969-04-03 Zinser Textilmaschinen Gmbh Doppelriemchenstreckwerk
JPS5787074U (enrdf_load_stackoverflow) * 1980-11-18 1982-05-28
DE102005005382A1 (de) * 2005-02-05 2006-08-10 Texparts Gmbh Oberwalzenträger für Streckwerke an Spinnmaschinen
DE102007003158A1 (de) * 2007-01-18 2008-07-24 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Streckwerks-Anordnung
DE102007054318A1 (de) * 2007-10-31 2009-05-07 Wilhelm Stahlecker Gmbh Streckwerk mit zwei Führungsriemchen
DE102009030367A1 (de) * 2009-06-25 2010-12-30 Oerlikon Textile Components Gmbh Oberriemchenhalter für Streckwerke von Spinnereimaschinen
DE102014110950A1 (de) * 2014-08-01 2016-02-04 Deutsche Institute Für Textil- Und Faserforschung Denkendorf Walzenstreckanordnung einer Arbeitsstelle einer stapelfaserverarbeitenden Textilmaschine sowie damit ausgestattete Textilmaschine
EP3461938B1 (en) * 2017-09-29 2021-09-29 Pinter Caipo, S.A.U. Cradle assembly for a drafting device of a spinning machine
DE102019110881A1 (de) * 2019-04-26 2020-10-29 Saurer Intelligent Technology AG Riemchenstreckwerk
DE102019114662A1 (de) * 2019-05-31 2020-12-03 Maschinenfabrik Rieter Ag Käfig für ein Druckwalzenpaar eines Streckwerks
CN110184693A (zh) * 2019-06-05 2019-08-30 广众纺机科技(东莞)有限公司 一种曲线牵伸系统以及具有该曲线牵伸系统的细纱机

Also Published As

Publication number Publication date
CN115467059A (zh) 2022-12-13
LU102828B1 (de) 2022-12-12
EP4101955A1 (de) 2022-12-14
JP2022189783A (ja) 2022-12-22
US20220396900A1 (en) 2022-12-15
CN115467059B (zh) 2024-09-24

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