EP0362477B1 - Système d'étirage pour un métier à filer - Google Patents

Système d'étirage pour un métier à filer Download PDF

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Publication number
EP0362477B1
EP0362477B1 EP19890111510 EP89111510A EP0362477B1 EP 0362477 B1 EP0362477 B1 EP 0362477B1 EP 19890111510 EP19890111510 EP 19890111510 EP 89111510 A EP89111510 A EP 89111510A EP 0362477 B1 EP0362477 B1 EP 0362477B1
Authority
EP
European Patent Office
Prior art keywords
drafting system
top roll
roll
roller
holding 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.)
Expired - Lifetime
Application number
EP19890111510
Other languages
German (de)
English (en)
Other versions
EP0362477A1 (fr
Inventor
Siegfried Dipl.-Ing. Günkiger (FH)
Bernhard Dipl.-Ing. Zimmermann (Fh)
Josef Coerstges
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.)
Truetzschler GmbH and Co KG
Original Assignee
Truetzschler 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 Truetzschler GmbH and Co KG filed Critical Truetzschler GmbH and Co KG
Publication of EP0362477A1 publication Critical patent/EP0362477A1/fr
Application granted granted Critical
Publication of EP0362477B1 publication Critical patent/EP0362477B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/44—Adjusting drafting elements, e.g. altering ratch

Definitions

  • the invention relates to a drafting system for a spinning machine, in particular a draw frame, with lower rollers arranged stationary in punches and with upper rollers held in pressure arms, to which load means are assigned and at least one of which is adjustable in the circumferential direction of the associated lower roller.
  • the invention has for its object to improve a drafting system of the type mentioned in such a way that its operation and in particular a changeover is easier.
  • an adjustment drive is provided for the at least one adjustable top roller which engages on guides on the punches for the axis of the top roller which take the top roller in the circumferential direction of the associated bottom roller.
  • This adjustment drive can be controlled, for example, by a computer, to which the data of the fiber material to be processed are entered. By means of such an adjustment drive it is also possible to make a correction during operation if this should prove necessary and / or relevant.
  • the guide is in each case part of a holding device which can be adjusted concentrically around the associated lower roller. This makes it possible to accommodate the adjustment drive and the associated elements in the punches, so that the pressure arms are free of these elements.
  • loading devices which cooperate with the adjustable top roller are attached to the holding devices. So that the correct alignment of the loading device is then also maintained when the setting of the top roller is changed.
  • the loading devices of the at least one adjustable top roller are equipped with coupling means which automatically release themselves from the top roller when the load is removed. This ensures that the accessibility of the drafting system remains unaffected.
  • the load devices do not have to be released and / or disassembled before the drafting system is opened by swiveling the pressure arms away.
  • the at least one adjustable top roller can be attached to the holding device so that it can be pivoted away from the bottom rollers by means of pivoting elements and can be transferred into the operating position by means of the pressure arms.
  • This embodiment has the advantage that the alignment of the top roller with the bottom roller is not lost, since this is directly on the holding devices is held. Nevertheless, the accessibility is retained after the pressure arms have been swiveled, since the top roller is then relieved of the pressure arms and can swivel.
  • the drafting system shown schematically in Fig. 1 contains three lower rollers (11, 12, 13) which are arranged in a stationary manner in punches (10) and are driven in a manner not shown in detail. These lower rolls (11, 12, 13) are assigned upper rolls (15, 16, 17, 18), which between the pairs of rolls (13, 18) and (12, 17) and between the pairs of rolls (12, 16) and (11, 15) First form a pre-default field and then a main default field. The field widths of the pre-drafting field and also the main drafting field can be adjusted to match the fiber material to be processed.
  • a motorized adjustment drive (24) is provided for the top roller (16), which delimits the inlet side of the main drafting zone.
  • a motorized adjustment drive for the top roller (18) as well as that a motorized adjustment drive is only provided for the top roller (18) , while the upper roller (16) can then only be moved by hand.
  • a motorized adjustment drive can also be provided in a simplified embodiment, which has a hand crank instead of a motor.
  • the upper rollers (15, 16, 17, 18) are held at each end by a pressure arm (14) which is attached to the punches (10) so as to be pivotable about an axis (28) parallel to the rollers.
  • the pressure arm (14) can be locked in a manner not shown in relation to the punches in its operating position shown.
  • the upper rollers (15, 16, 17, 18) will usually be held in the pressure arms (14) so that they can pivot with them.
  • at least the adjustable upper roller (16) on the punches by means of its own swiveling holder, so that the pressure arms (14) then only the upper roller (16 ) return to the operating position when closing.
  • the upper rollers (15, 16, 17, 18) are provided with loading devices which press them against the lower rollers (11, 12, 13) with a predetermined force. These loading devices, which are only shown in connection with the adjustable top roller (16), are usually accommodated in the pressure arms (14). This applies in particular to the upper rollers (15, 17) which are not arranged in the pressure arms (14).
  • loading devices are provided on both sides of the punches (10), which hydraulic or contain a pneumatic press (21), the extension movement of which is transmitted as a pulling movement to the upper roller (16), so that the upper roller (16) is pulled towards the lower roller (12).
  • holding devices (20) On the punches (10) holding devices (20) are attached on both sides, which, as will be explained in more detail later, can be pivoted concentrically to the lower roller (12) and have a guide (19) in which the upper roller (16) with its Axis (32) or the bearing housing is guided.
  • the holding device (20) also carries the loading device to be described with the press (21), so that when the holding device (20) is rotated, the loading device is also rotated and remains in its correct position.
  • the upper roller (16) is guided, for example, in a sliding guide of the pressure arm (14), which is aligned concentrically with the lower roller (12) in the closed position of the pressure arm (14). When the holding device (20) is pivoted, the upper roller (16) is thus also pivoted within its sliding guide.
  • This adjustment drive (24) contains a shaft (27) connecting the adjustment elements on both punches, so that a synchronous adjustment is ensured on both sides.
  • the holding devices (20) arranged on both sides of the rollers have a plate-shaped base body which is provided with a cylindrical projection (33) which is rotatably arranged in the punches (10).
  • This cylindrical extension (33) serves as a bearing seat for the bearings (34) of the lower roller (12).
  • a rotation of the holding device (20) within the punch (10) is therefore necessarily concentric with the lower roller (12).
  • the plate-shaped base body of the holding device (20) is provided with the guide (19) for the axis (32) of the upper roller (16) at its area projecting over the punches (10).
  • the axis (32) or the bearing housing of the upper roller (16) is held in the pressure arm (14) in a manner not shown by means of a holder (35).
  • the holder (35) is movably arranged in a guide which is concentric with the lower roller (12) when the pressure arm (14) is closed.
  • elastically resilient elements are advantageously arranged so that there is no over-determination and the position of the upper roller (16) in the operating position with the pressure arm (14) closed exclusively by the Guides (19) of the holding device (20) is determined.
  • the holding device (20) is provided on its side opposite the shoulder (33) with a shoulder (36) with a rectangular cross section, to which the press (21) serving as the loading device is fastened.
  • the press (21) is attached to this extension (36) in such a way that its piston (37) can be extended radially away from the upper roller (16).
  • This extension movement of the piston (37) is transmitted to the top roller (16) via a bracket (22).
  • the bracket (22) has a bolt (38) which is connected to the piston (37).
  • Tabs (39) are attached to the side of the bolt (38) so that they can rotate, which are connected to one another at their other end by a locking pin (40).
  • a hook-like end (41) of the axis (32) of the top roller (16) is assigned to the locking pin (40).
  • the two tabs (39) are provided with guide pins (42) which are guided in a link guide of the extension (36).
  • This link guide (43) has a section which runs obliquely to the extension direction of the piston (37) and in which the guide pins (42) are located when the piston (37) is largely retracted.
  • the link guide (43) has a section which extends in the extension direction of the piston (37) and in which the guide pins are located when the piston (37) is extended further.
  • the upper roller (16) is not carried by the pressure arms (14), but rather by the holding device (20).
  • the pressure arms (14) only serve to bring the upper roller into the operating position shown in FIG. 4 in the closing position, in which the tensioning can then be carried out by means of the press (21).
  • the upper roller (16) is held on each side by means of swivel arms (23) which are attached to the holding device (20) so as to be pivotable about a pivot axis (44) parallel to the upper roller (16).
  • the swivel arms (23) carry a corresponding holder (35) in which the axis (32) of the top roller (16) is received.
  • the position of the top roller is therefore determined exclusively by the guide (19) of the holding device (20).
  • the swivel arms (23) are equipped with spring elements, not shown, which load them with a force in the direction of arrow (45), so that the swivel arms (23) lift the top roller (16) from the associated bottom roller (12) as soon as the Pressure arm (14) is pivoted.
  • the holding device (20) and thus the upper roller (16) are adjusted by means of a push crank (46) articulated on the holding device (20), which in turn is connected to a crank (47) which is arranged on the shaft (27) in a rotationally fixed manner .
  • the shaft (27) is driven by a stepper motor (29), which is connected via a coupling (48) to a worm (25) which engages in a worm wheel arranged on the shaft (27) in a manner fixed against relative rotation.
  • the clutch (48) and the stepper motor (29) can be omitted.
  • the screw (25) can be adjusted manually by means of a tool, for example a crank.

Landscapes

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

Claims (10)

  1. Système d'étirage pour un métier à filer, en particuler un banc d'étirage, avec des cylindres inférieurs, disposés de façon stationnaire dans des supports, et avec des cylindres supérieurs, maintenus dans des bras de serrage, auxquels sont affectés des moyens de charge desquels au moins un est réglable en direction de la circonférence du cylindre inférieur correspondant, caractérisé en ce que pour au moins un cylindre supérieur (16) est prévu une commande de réglage portant sur les guidages (19), fixés sur les supports (10), pour l'axe (32) du cylindre supérieur (16) et entraînant le cylindre supérieur en direction circonférentielle du cylindre inférieur (12) correspondant.
  2. Système d'étirage selon la revendication 1, caractérisé en ce que le guidage (19) est respectivement une partie d'un dispositif de retenue (20) réglable de façon concentrique autour du cylindre inférieur (12) correspondant.
  3. Système d'étirage selon la revendication 2, caractérisé en ce que sur le dispositif de retenue (20) est disposé un dispositif de charge (21) coopérant respectivement avec le cylindre supérieur (16) réglable.
  4. Système d'étirage selon la revendication 3, caractérisé en ce que le dispositif de charge (21) d'au moins un des cylindres supérieurs (16) réglables est équipé de moyens d'accouplement (22) se détachant automatiquement du cylindre supérieur (16) lors de la décharge.
  5. Système d'étirage selon l'une des revendications 1 à 4, caractérisé en ce que au moins un cylindre supérieur (16) réglable est fixé moyennant des éléments de basculement (23) de façon déplaçable du cylindre inférieur (12) sur le dispositif de retenue (20) et peut être remis en position de travail moyennant le bras de serrage (14).
  6. Système d'étirage selon la revendication 5, caractérisé en ce que les éléments de basculement (23) sont équipés d'éléments élastiques exerçant une force d'enlèvement.
  7. Système d'étirage selon l'une des revendications 1 à 6, caractérisé en ce que la commande de déplacement (24) comprend un jeu d'engrenage à vis sans fin (25, 26).
  8. Système d'étirage selon l'une des revendications 1 à 7, caractérisé en ce que la commande de déplacement (24) comprend un moteur pas-à-pas (30).
  9. Système d'étirage selon l'une des revendications 1 à 8, caractérisé en ce que les éléments de la commande de déplacement (24), disposés des deux côtés du cylindre inférieur (12) sont reliés par un arbre commun (27).
  10. Système d'étirage selon l'une des revendications 1 à 8, caractérisé en ce que des moyens pour arrêter les dispositifs de retenue (20) sont prévus.
EP19890111510 1988-09-21 1989-06-24 Système d'étirage pour un métier à filer Expired - Lifetime EP0362477B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883832063 DE3832063A1 (de) 1988-09-21 1988-09-21 Streckwerk fuer eine spinnereimaschine
DE3832063 1988-09-21

Publications (2)

Publication Number Publication Date
EP0362477A1 EP0362477A1 (fr) 1990-04-11
EP0362477B1 true EP0362477B1 (fr) 1993-10-27

Family

ID=6363413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890111510 Expired - Lifetime EP0362477B1 (fr) 1988-09-21 1989-06-24 Système d'étirage pour un métier à filer

Country Status (3)

Country Link
EP (1) EP0362477B1 (fr)
JP (1) JP2740285B2 (fr)
DE (2) DE3832063A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1609894A1 (fr) * 2004-06-26 2005-12-28 Maschinenfabrik Rieter Ag Dispositif pour ajuster le longueur de zone d'étirage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3606646A (en) * 1969-08-28 1971-09-21 Maremont Corp Drafting roll weighting mechanism
LU64866A1 (fr) * 1972-02-29 1973-09-04
DE2941612A1 (de) * 1979-10-13 1981-04-23 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Strecke
DE3269277D1 (en) * 1981-04-06 1986-04-03 Rieter Ag Maschf Device for drafting a roving in spinning machines
JPS5983981U (ja) * 1982-11-25 1984-06-06 東レエンジニアリング株式会社 ドラフト装置
DE3542355A1 (de) * 1985-11-29 1987-06-04 Zinser Textilmaschinen Gmbh Streckwerk einer spinnereimaschine

Also Published As

Publication number Publication date
DE3832063A1 (de) 1990-03-22
DE58906017D1 (de) 1993-12-02
JPH0299620A (ja) 1990-04-11
EP0362477A1 (fr) 1990-04-11
JP2740285B2 (ja) 1998-04-15

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