EP3572568B1 - Banc d'étirage ainsi qu'unité de banc d'étirage pour un métier à filer - Google Patents

Banc d'étirage ainsi qu'unité de banc d'étirage pour un métier à filer Download PDF

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Publication number
EP3572568B1
EP3572568B1 EP19175866.3A EP19175866A EP3572568B1 EP 3572568 B1 EP3572568 B1 EP 3572568B1 EP 19175866 A EP19175866 A EP 19175866A EP 3572568 B1 EP3572568 B1 EP 3572568B1
Authority
EP
European Patent Office
Prior art keywords
knee lever
drafting system
joint axis
system unit
toggle lever
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
EP19175866.3A
Other languages
German (de)
English (en)
Other versions
EP3572568A1 (fr
EP3572568B8 (fr
Inventor
Joachim Diedrich
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 EP3572568A1 publication Critical patent/EP3572568A1/fr
Publication of EP3572568B1 publication Critical patent/EP3572568B1/fr
Application granted granted Critical
Publication of EP3572568B8 publication Critical patent/EP3572568B8/fr
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
    • D01H5/46—Loading 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
    • D01H5/46—Loading arrangements
    • D01H5/48—Loading arrangements using weights
    • 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
    • D01H5/56—Supports for drafting elements
    • 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
    • D01H5/56—Supports for drafting elements
    • D01H5/565—Top roller arms
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H3/00—Spinning or twisting machines in which the product is wound-up intermittently, e.g. mules

Definitions

  • the invention relates to a drafting system having a drafting system unit for a spinning machine and such a drafting system unit having at least one load carrier which can be pivoted between an operating position and an open position by means of an adjustment device.
  • Drafting systems for spinning machines are known in a variety of configurations from the prior art. They are used to stretch or warp a sliver, which causes a reduction in the cross-section of the fiber. During the draft, the fibers must be shifted against each other as evenly as possible in order to achieve an even sliver, which is a prerequisite for the production of an even yarn.
  • the drafting devices generally have a plurality of pairs of rollers which are arranged one behind the other and clamp the sliver running between them.
  • a pair of rollers usually consists of a driven bottom roller and an upper pressure roller resting against the bottom roller.
  • a delay in the sliver is achieved in that the circumferential speed increases from pair of rolls to pair of rolls in the transport direction of the sliver defined by the direction of rotation of the pairs of rolls.
  • a drafting unit with the features according to the preamble of claim 1 is, for example, from the publications DE 20 19 352 A1 and DE 39 04 108 A1 known.
  • a drafting unit with a load carrier of the type mentioned above is an assembly of a drafting system of a spinning machine which, due to its design, offers the possibility of moving the load carrier, e.g lift off the bottom rollers.
  • load carriers have the disadvantage that high actuating forces are required, particularly when a plurality of load carriers coupled to one another are adjusted simultaneously, which, for example, guide and load a common top roller.
  • load carriers also require a tightly toleranced or precisely aligned position in relation to one another.
  • the object of the invention is to provide a drafting system and a drafting system unit for a To provide a drafting system for a spinning machine, the drafting system unit having a particularly simple structure and allowing user-friendly operation, in particular by simplifying the actuation of several load carriers that can be opened or closed at the same time by reducing the actuation effort.
  • the invention achieves the object by a drafting unit having the features of claim 1 and by a drafting unit having the features of claim 8.
  • Advantageous developments of the drafting unit are specified in the dependent claims.
  • a characteristic of the drafting unit according to the invention is that two or more load carriers are each connected in a torsion-proof manner to a holding rod which can be rotated about its longitudinal axis by means of the adjusting device pivoting the at least two load carriers together and which is mounted on a holding rod receptacle.
  • a non-rotatable connection of two or more load carriers to a central support rod makes it possible to effect a reliable adjustment of two or more load carriers arranged on the support rod simply by twisting the support rod about its longitudinal axis.
  • the adjustment device is used to adjust the holding rod, which allows the two or more load carriers to be conveniently shifted between the operating position and the open position at a predetermined position that is easily accessible to the user/operator.
  • the drafting unit is distinguished by the fact that it allows the load carriers to be reliably positioned in the desired position. In addition, further connecting elements between the load carriers can be dispensed with. Compared to an adjustment of individual load carriers alone, the support rod that can be adjusted by means of the adjustment device also has the advantage that the position of all load carriers arranged on the support rod can be secured by locking the support rod in the desired position.
  • the adjustment device for moving the holding rod can be configured as desired.
  • the adjusting device has a toggle lever arrangement which is operatively connected to the holding rod and which can be adjusted between a closed position associated with the operating position and an open position associated with the open position.
  • the design of the adjustment device with a toggle lever arrangement enables a particularly comfortable and energy-saving adjustment of the load carrier or load carriers between the operating position and the open position.
  • the design of the toggle lever arrangement can be designed taking into account the desired actuating forces and thus allows a comfortable twisting of the holding rod and all the load carriers arranged on the holding rod.
  • the configuration of the toggle lever arrangement can in principle be freely selected.
  • the toggle lever arrangement has a first toggle lever and a second toggle lever, the first toggle lever being pivotable about a first joint axis arranged in a stationary manner opposite the holding rod, the first and the second toggle lever being articulated via a toggle lever joint axis and the second toggle lever has a toggle lever section which is spaced apart from the toggle lever joint axis and which is connected to the holding rod in a manner that transmits a rotational movement.
  • the first toggle lever is fixed relative to the holding rod with its first joint axis.
  • the retaining rod and the first toggle lever are rotatably mounted on a common component, for example on a common section of a machine frame of the drafting unit.
  • the second toggle lever is connected with its toggle lever section spaced apart from the toggle joint axis, which can in particular be a toggle lever end opposite the toggle lever joint axis, to the holding rod for transmitting a rotary movement, so that by adjusting the first and second toggle lever, which are connected to one another in an articulated manner, in particular via a common toggle lever joint axis, causing the holding rod to rotate.
  • Such a configuration of the drafting system unit is characterized by its particularly simple structure, which at the same time allows reliable power transmission and determination of the actuating forces.
  • the operating position of the two or more load carriers can be secured in any desired manner, for example by means of suitable locking elements which lock the toggle lever arrangement in the closed position.
  • the toggle lever arrangement is arranged in the closed position in an over-center position.
  • a corresponding configuration of the toggle lever arrangement is distinguished characterized in that there is no need for separate locking elements for the closed position and it is prevented in a particularly simple and reliable manner that the two or more load carriers are not automatically adjusted in the direction of the open position during operation due to the forces then occurring.
  • the second toggle lever is articulated at one end opposite the toggle joint axis via a second joint axis to a link which is non-rotatably connected to the holding rod at its end opposite the second joint axis.
  • the second toggle lever of the toggle lever arrangement is connected in an articulated manner to a link which, with a link section spaced apart from the second toggle lever, is non-rotatably coupled to the holding rod or is arranged on the holding rod.
  • an actuation of the adjusting device by means of which the holding rod is rotated about its longitudinal axis or an advantageously provided toggle lever arrangement is adjusted between the closed position and the open position, can in principle take place in any manner.
  • the use of different electrically, hydraulically or pneumatically acting drives is conceivable here.
  • the toggle lever arrangement can be adjusted between the operating position and the closed position using a hand lever.
  • the use of a hand lever is characterized by particular simplicity and low susceptibility to errors, with the operating forces being in a comfortable range for a user due to the toggle lever arrangement used.
  • connection between the hand lever and the toggle lever arrangement can be freely selected within the framework of the structural conditions.
  • the hand lever can be pivoted about the first joint axis together with the first toggle lever.
  • a pivotable mounting of the hand lever about the first articulation axis of the first toggle lever enables a particularly compact and simple design, since a further bearing axis for the hand lever can be dispensed with.
  • the hand lever is rigidly connected to the first toggle lever, in particular formed in one piece.
  • the rigid connection of the hand lever to the first toggle lever enables a simpler construction and a more effortless and more comfortable adjustment of the toggle lever arrangement between the closed and the open position.
  • the hand lever with the toggle lever arrangement that can be brought into engagement by means of engagement elements, so that actuation of the hand lever via the engagement elements, which couple the hand lever to the toggle lever arrangement in a force-transmitting manner, leads to an actuation or rotating movement of the toggle lever arrangement.
  • the engagement elements can be formed, for example, by a recess and a web, bolt, projection or the like interacting with the recess, one of the components consisting of the hand lever and toggle lever arrangement having the recess and the other component having the component interacting with the recess.
  • detachable locking connections are also conceivable as engagement elements.
  • the drafting system has a drafting system unit in which two or more load carriers are connected in a torque-proof manner to a common holding rod which can be rotated about its longitudinal axis between an operating position and an open position of the load carrier by means of an adjusting device.
  • the support rod is rotatably mounted on a support rod receptacle and, due to its rotatability, allows reliable adjustment and positioning of all load carriers arranged on the support rod.
  • the position of the load carrier can also be secured centrally via the adjustment device, so that individual locks for each load carrier can be dispensed with. Further configurations of the drafting system result from the possible developments of the drafting system unit presented above.
  • the drafting unit 1 shown of a spinning machine serves to stretch a sliver between the pressure rollers 15a, 15b, 15c arranged on a support arm 16 of a loading carrier 3 and the other lower rollers 14a, 14b, 14c of the drafting system, not shown here.
  • the roller pairs formed from a bottom roller 14a, 14b, 14c and a pressure roller 15a, 15b, 15c have a different, increasing rotational speed in the direction of transport, in order to bring about a stretching of the sliver in the region between the pairs of rollers.
  • the drafting system unit 1 has two load carriers 3 arranged parallel to one another on a holding rod 4, each with a support arm 16, which each have three pressure roller pairs formed from two pressure rollers 15a, 15b, 15c, the axes of rotation of which run perpendicular to the longitudinal axis of the associated support arm 16 .
  • the support arms 16 are each rigidly connected to two supporting bodies 17 which are arranged on both sides of the support arm 16 and which in turn are connected in a torsion-proof manner to a holding rod 4 (cf. figure 3 ).
  • the pressure rollers 15a, 15b, 15c are in contact with the lower rollers 14a, 14b, 14c, so as to stretch the sliver arranged between them.
  • the load carriers 3 from the in figure 1 illustrated operating position to an in figure 2 shown open position are pivoted, in which the pressure rollers 15a, 15b, 15c are lifted from the lower rollers 14a, 14b, 14c.
  • an adjustment device 2 which pivots the support arm 16 together with the supporting bodies 17 connected to the support arm 16 about a longitudinal axis of the holding rod 4 . Pivoting results from a twisting of the support rod 4, which is rotatably mounted on a support rod receptacle 5, for example a machine housing. Due to the non-rotatable arrangement of the supporting bodies 17 on the retaining rod 4, a rotation of the retaining rod 4 in the retaining rod receptacle 5 causes a displacement of the load carrier 3 in accordance with the rotational movement of the retaining rod 4 caused by the adjustment device.
  • the adjusting device 2 has a toggle lever arrangement 6, which can be adjusted by means of a hand lever 13 between a closed position associated with the operating position and an open position associated with the open position.
  • the toggle lever arrangement 6 has a first toggle lever 7 which, according to a preferred exemplary embodiment, can be pivoted about a first joint axis 9 on the holding rod receptacle 5 .
  • the holding rod receptacle and the first joint axis are arranged at a distance from one another.
  • the first toggle lever 7 is connected to the second toggle lever 8 via a toggle joint axis 11 .
  • the second toggle lever 8 is connected at a toggle lever section spaced apart from the toggle joint axis 11, in this preferred exemplary embodiment at the end of the second toggle lever 8 opposite the toggle lever joint axis 11, via a second joint axis 10 to a link 12, which is at the end opposite the second joint axis 10 is non-rotatably connected to the support rod 4, so that the twisting of the link 12 causes an adjustment of the support rod 4 and thus a displacement of the load carrier 3.
  • a hand lever 13 which can be pivoted about the first joint axis 9 and interacts with the toggle lever arrangement 6 serves to adjust the toggle lever arrangement 6 .
  • the hand lever 13 is rigidly connected to the first toggle lever 7, as a result of which a movement of the hand lever 13 leads directly to an actuation of the first toggle lever 7.
  • the hand lever 13 and the first toggle lever 7 are preferably formed from one piece of material.
  • the hand lever 13 and the first toggle lever can be formed from two pieces of material which are connected to one another, for example, by means of the usual measures of positive, material or non-positive locking.
  • the hand lever 13 transfers the toggle lever arrangement 6 from an over-center position into the open position.
  • the hand lever 13 must only be moved back in the opposite direction from the position in figure 2 illustrated opening position to the in figure 1 shown operating position required, the hand lever 13 converts the toggle lever assembly 6 in the over-center position.

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

Claims (8)

  1. Banc d'étirage pour un métier à filer, doté d'au moins deux bancs de chargement (3) orientables au moyen d'un dispositif de réglage (2) entre une position de fonctionnement et une position d'ouverture,
    caractérisé en ce que
    au moins deux bancs de chargements (3) sont chacun reliés à une barre de maintien (4) de manière à résister à la torsion, qui est montée sur un logement de barre de maintien (5) de manière à pouvoir tourner autour de son axe longitudinal au moyen du dispositif de réglage (2) qui fait pivoter conjointement au moins les deux bancs de chargement (3).
  2. Banc d'étirage conformément à la revendication 1, caractérisé en ce que le dispositif de réglage (2) présente un ensemble de leviers (6) relié à la barre de maintien (4), qui se situe entre une position de fermeture associée à la position de fonctionnement et une position d'ouverture associée à la position d'ouverture.
  3. Banc d'étirage selon la revendication 2 caractérisé en ce que un ensemble de leviers à genouillère (6) est disposé dans la position de fermeture dans une mise en position au delà du point mort.
  4. Banc d'étirage selon la revendication 2 ou 3 caractérisé en ce que l'ensemble de leviers à genouillère (6) présente un premier levier à genouillère (7) et un deuxième levier à genouillère (8) par lesquels
    - le premier levier à genouillère (7) peut pivoter autour d'un premier axe d'articulation (9) disposé de manière fixe par rapport à la barre de maintien (4),
    - le premier levier à genouillère (7) et le deuxième levier (8) sont reliés de manière articulée par un axe d'articulation de levier (11), et
    - le deuxième levier à genouillère (8) comporte une section de genouillère espacée de l'axe d'articulation de la genouillère (11) qui est reliée à la barre de maintien (4) par la transmission d'un mouvement de rotation.
  5. Banc d'étirage conformément à la revendication 4, caractérisé en ce que le deuxième levier à genouillère (8) est relié à un point opposé à l'axe d'articulation de la genouillère, une section de genouillère est reliée à l'extrémité est articulée sur un deuxième axe d'articulation (10) à l'aide d'un guide (12), qui, à son extrémité opposée au deuxième axe d'articulation (10), est relié à la barre de maitien (4) sans pouvoir tourner.
  6. Banc d'étirage selon la revendication 5 caractérisé en ce que l'ensemble de leviers à genouillère (6) est réglable entre la position de fonctionnement et la position de fermeture au moyen d'un levier manuel (13).
  7. Banc d'étirage selon la revendication 6 caractérisé en ce que le levier manuel (13) peut pivoter avec le premier levier à genouillère (7) autour du premier axe d'articulation (9).
  8. Dispositif d'étirage pour un métier à filer, doté d'un banc d'étirage (1), qui présente au moins deux bancs de chargement (3) orientables au moyen d'un dispositif de réglage (2) entre une position de fonctionnement et une position d'ouverture,
    caractérisé en ce que
    le banc d'étirage (1) est conçu conformément à une ou plusieurs des revendications 1 à 7.
EP19175866.3A 2018-05-24 2019-05-22 Banc d'étirage ainsi qu'unité de banc d'étirage pour un métier à filer Active EP3572568B8 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018112422.8A DE102018112422A1 (de) 2018-05-24 2018-05-24 Streckwerk sowie Steckwerkeinheit für eine Spinnmaschine

Publications (3)

Publication Number Publication Date
EP3572568A1 EP3572568A1 (fr) 2019-11-27
EP3572568B1 true EP3572568B1 (fr) 2022-07-27
EP3572568B8 EP3572568B8 (fr) 2022-10-19

Family

ID=66630204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19175866.3A Active EP3572568B8 (fr) 2018-05-24 2019-05-22 Banc d'étirage ainsi qu'unité de banc d'étirage pour un métier à filer

Country Status (9)

Country Link
US (1) US11879186B2 (fr)
EP (1) EP3572568B8 (fr)
JP (1) JP7437881B2 (fr)
KR (1) KR20190134526A (fr)
CN (1) CN110528126B (fr)
DE (1) DE102018112422A1 (fr)
ES (1) ES2928624T3 (fr)
RU (1) RU2019115880A (fr)
TW (1) TW202003937A (fr)

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CN103820891B (zh) * 2014-03-06 2015-03-04 江南大学 三级牵伸纺纱方法
DE102016006066A1 (de) * 2016-05-19 2017-11-23 Khs Corpoplast Gmbh Form zur Formung von Hohlkörpern aus Vorformlingen

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US20190360128A1 (en) 2019-11-28
CN110528126B (zh) 2022-07-01
RU2019115880A (ru) 2020-11-23
TW202003937A (zh) 2020-01-16
KR20190134526A (ko) 2019-12-04
US20240133082A1 (en) 2024-04-25
US11879186B2 (en) 2024-01-23
JP7437881B2 (ja) 2024-02-26
CN110528126A (zh) 2019-12-03
ES2928624T3 (es) 2022-11-21
DE102018112422A1 (de) 2019-11-28
EP3572568A1 (fr) 2019-11-27
EP3572568B8 (fr) 2022-10-19

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