EP3009538B1 - Ouvreuse de balles - Google Patents

Ouvreuse de balles Download PDF

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Publication number
EP3009538B1
EP3009538B1 EP15002767.0A EP15002767A EP3009538B1 EP 3009538 B1 EP3009538 B1 EP 3009538B1 EP 15002767 A EP15002767 A EP 15002767A EP 3009538 B1 EP3009538 B1 EP 3009538B1
Authority
EP
European Patent Office
Prior art keywords
take
lifting spindle
tower
arm
bale opener
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.)
Not-in-force
Application number
EP15002767.0A
Other languages
German (de)
English (en)
Other versions
EP3009538A1 (fr
Inventor
Alexander Schmid
Gerhard Gschliesser
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
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3009538A1 publication Critical patent/EP3009538A1/fr
Application granted granted Critical
Publication of EP3009538B1 publication Critical patent/EP3009538B1/fr
Not-in-force 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
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G7/00—Breaking or opening fibre bales
    • D01G7/06—Details of apparatus or machines
    • D01G7/12—Framework; Casings; Coverings; Grids
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G7/00—Breaking or opening fibre bales
    • D01G7/06—Details of apparatus or machines
    • D01G7/14—Driving arrangements

Definitions

  • the invention relates to a bale opener for removing fiber flakes from fiber bales with a mounted on a chassis or bogie removal tower and with a Abtragarm.
  • Bale removing machines or bale openers are used to remove fibers or fiber flakes from pressed fiber bales.
  • a removal organ is moved across the fiber bales.
  • the removal member is attached to a Abtragarm, which is adjusted in height to the present fiber bales.
  • the Abtragarm in turn is held on a Abtragturm.
  • the ablation tower allows the ablation element to be moved over the ablated surface of the fiber bales.
  • the removal tower is arranged on a chassis or a bogie. With a chassis, which is usually performed on rails, can be driven along a row of bales. If the fiber bales are arranged in a circle around the removal tower, the removal tower is arranged on a bogie.
  • a combination of landing gear and bogie is when fibers or fibrils are removed in one direction from a first row of fiber bales and in the opposite direction from a second row of fiber bales.
  • the bale opener is at the beginning of processing lines in a spinning preparation (processing) for the processing of fiber material, such as cotton or synthetic fibers or mixtures thereof, and has a decisive influence on the continuity of the processes within the spinning preparation.
  • the fiber material delivered in bales is removed from the bales by removing fiber flakes and transferred to a pneumatic transport system.
  • the pneumatic transport system brings the fiber flakes through pipes to the following cleaning machines.
  • the Abtragarm is kept adjustable in today's usual bale openers on Abtragturm.
  • the height adjustment is usually done via chain or belt drives, where the Abtragarm is raised or lowered.
  • To determine the position the Abtragarms relative to the surface of the fiber bales are provided on Abtragarm sensors.
  • the CH 686 188 A5 a Abtragarm with a chain drive for height adjustment.
  • the Abtragarm is suspended via a rope and pulleys on a counterweight being adjusted with a lifting motor via a chain drive the Abtragarm in its height.
  • CH 657 386 A discloses a bale opener, which moves the Abtragarm circular over the fiber bales to be opened.
  • the Abtragarm is moved in height over four arranged at the corners threaded rods.
  • the threaded rods are connected via a gear to ensure a synchronous movement of the threaded rods.
  • the JP S63 102772 U a bale opener, in which the Abtragarm rotates about a stationary tower.
  • the height adjustment of the Abtragarmes is made via the rotation of an anchored in the Abtragturm lifting spindle.
  • the SU 32 342 A1 discloses a bale opener which has a held on a central, rigidly anchored lifting spindle Abtragorgan.
  • a disadvantage of the disclosed construction according to the prior art is the complex construction of the hoists, which either make a suspension independent of the actual movement necessary, or must have several simultaneously the Abtragarm moving linear actuators. This also has the consequence that an exact alignment of the Abtragarms is complicated with respect to the fiber bales to be opened and periodically re-adjustment must be performed due to operational wear. Likewise, an elaborate sensor system is necessary for the positioning and control of the hoist.
  • the object of the invention is to provide a bale opener with a Abtragarm, which allows easy controllable height adjustment of the Abtragarms and the Avoids the need for separate suspension or synchronous movement in different drive points.
  • the bale opener for removing fiber flakes from fiber bales comprises an ablation tower arranged on a chassis or bogie and a removal arm, the removal arm being held vertically adjustable in a guide on the ablation tower.
  • a single lifting spindle is provided with a longitudinal axis in the direction of movement of the Abtragarms, wherein the lifting spindle is attached to the Abtragturm and the Abtragarm is connected via a nut with the lifting spindle.
  • a single lifting spindle for example, a threaded spindle is provided.
  • the lifting spindle is fixedly secured to the removal tower, wherein the attachment is designed such that the lifting spindle extends with its longitudinal axis in the vertical direction of movement of the Abtragarmes.
  • the Abtragarm is connected via a nut with the lifting spindle. By rotating the nut with a fixed lifting spindle, the removal tower is moved downwards or upwards depending on the direction of rotation along the longitudinal axis.
  • the Abtragarm is connected via a recirculating ball nut with the lifting spindle.
  • balls that move axially as they move rotate in the grooves.
  • a return channel in the recirculating ball nut moves the balls back to close the circuit in which the balls circulate.
  • Ball screws have the advantage over screw drives that a lower drive power is required by a point contact of the balls and their rolling motion and results in a more precise positioning.
  • the ball screw can be adjusted almost free of play and therefore allows an exact execution of smallest movements of the Abtragarmes in the direction of the longitudinal axis of the lifting spindle.
  • the leadership of the Abtragarms in Abtragturm is designed such that the lifting spindle is loaded only with forces in its longitudinal axis.
  • the Abtragarm is held in guide rails on Abtragturm.
  • the guide rails are designed such that all transverse forces and tilting moments of the projecting Abtragarms are received by the guide.
  • the design of the guide rails is designed such that only a movement in the longitudinal axis of the lifting spindle is possible for the Abtragarm and the forces are absorbed in two linear and three axes of rotation through the guide.
  • the guide rails can be designed as simple longitudinal profiles. In this case, sliding elements or rollers are applied to the guide rails from three sides, wherein the sliding elements or rollers are mounted on the Abtragarm.
  • the lifting spindle can be arranged on the side of the Abtragarm, resulting in advantages for the positioning of a fiber transport channel within the Abtragarms and the Abtragturmes.
  • the lifting spindle is arranged outside the center of gravity axes of the Abtragarms. In such an arrangement, the Abtragarm tilts in a predetermined direction, resulting in a defined position in the guide. Because a tilting moment acts on the guide in a direction determined by the arrangement of the lifting spindle, it is possible to achieve a backlash-free adjustment of the guide.
  • two spaced U-shaped guide rails can be arranged with their longitudinal axis in the direction of movement of the ablation tower on the ablation tower.
  • the openings of the U-shaped guide rails point in the direction of the respective opposite guide rail.
  • the Abtragarm guide elements such as rollers or sliding elements, attached, which are applied to the guide rails of the Abtragturmes.
  • the guide elements are designed such that a tilting of the Abtragarmes is prevented around the two horizontal axes of the Abtragarmes.
  • the guide elements cause a lateral guidance of the Abtragarmes in its vertical direction of movement.
  • On Abtragarm rollers or sliding elements are mounted, which are so created on the guide rails of the guide in the ablation tower that a play-free guidance of the Abtragarms is given.
  • the attachment of the lifting spindle is provided on the ablation tower only at an upper end of the lifting spindle and the lifting spindle is not held in the ablation tower at a lower end.
  • This type of fastening of the lifting spindle which equates to hanging, results in optimum conditions for the operation of the ball screw drive.
  • a clamping of the lifting spindle by an upper and lower mounting can lead to lateral forces on the ball nut due to temperature differences or stresses occurring within the lifting spindle.
  • the lifting spindle is rotatably held in the ablation tower and provided the ball nut with a drive.
  • the ball nut which creates a connection between the Abtragarm and the lifting spindle is rotated by a drive in rotation and causes a movement of the Abtragarms in the direction of the longitudinal axis of the lifting spindle.
  • a drive is particularly advantageous.
  • Such a drive has the advantage that a certain number of revolutions or parts of revolutions can be performed.
  • the lifting spindle is surrounded on both sides of the ball nut by a protective cover, for example a bellows, which adapts in its longitudinal extension of the respective position of the ball nut on the spindle.
  • the position of the Abtragarms in its height is given by a first calibration by the drive and also adjustable.
  • Elaborate sensors, such as light barriers or path measurements, to adjust the height of the Abtragarms are no longer necessary. It is also not necessary to approach reference points. Synchronous servomotors also have the property that the highest possible torque is already available during start-up and thus a movement of the Abtragarmes is made possible even in the smallest areas.
  • the attachment of the lifting spindle in the ablation tower via a load cell.
  • the lifting spindle is suspended on a load cell, which is attached to the removal tower. Since the lifting spindle in turn depends on the recirculating ball nut of the removal tower, the weight of the Abtragarms and the lifting spindle, which are attached to the load cell can be determined via the load cell.
  • the pitch is measured as the path length which the ball nut travels during one revolution of the lifting spindle. It has been found that lifting spindles with a diameter of 20 mm to 75 mm are suitable for continuous operation, preferably, the diameter of the lifting spindle between 30 mm and 50 mm to choose. When using a recirculating ball nut, the pitch of the lifting spindle is advantageously 5 mm to 40 mm, particularly preferably 10 mm to 20 mm. When using a threaded nut multi-speed lifting spindles are beneficial.
  • the guide comprises at least one combination roller.
  • a combination roller replaces two arranged in mutually orthogonal axes axes rollers and thus has the advantage of realizing a space-saving arrangement of the necessary guide rollers.
  • the combination roller is composed of a transverse guide roller and a longitudinal guide roller, which have a common bearing pin for rotationally fixed support of the combination roller.
  • the cross guide roller rotates about the axis which also determines the position of the journal. This results from the arrangement of the transverse guide roller a guide transversely to the axis of the journal.
  • the longitudinal guide roller rotates in an axis which is arranged transversely (orthogonal) to the axis of the journal and causes by its surface a guide in the direction of the axis of the journal.
  • axis which is arranged transversely (orthogonal) to the axis of the journal and causes by its surface a guide in the direction of the axis of the journal.
  • four combination rollers are used.
  • the combination rollers are mounted in a rectangular arrangement on the Abtragarm or the Abtragturm.
  • bale openers with one or more removal rollers are known from the prior art.
  • the inventive embodiment of the bale opener is independent of whether one or more removal rollers are used.
  • FIG. 1 and FIG. 2 show in a schematic representation of a bale opener 1 for removing fiber flakes of fiber bales.
  • FIG. 1 shows the bale opener 1 in a plan view and FIG. 2 in a view.
  • the bale opener 1 consists essentially of an ablation tower 3 and a Abtragarm 5.
  • the Abtragarm 5 is attached to the Abtragturm 3 on one side and freely cantilevered over the fiber bale 2.
  • the Abtragturm 3 is equipped with a chassis 4. With the help of the chassis 4, the ablation tower 3 is moved on rails along the fiber bale 2. As a result of this movement 13, the removal arm 5 attached to the removal tower 3 is guided over the surface of the fiber bales 2.
  • Abtragarm 1 a Abtragorgan, usually one or more Abtragwalzen 15 is arranged.
  • the removal roller 15 takes from the fiber bale 2 fiber flakes 16.
  • the fiber flakes 16 are brought by the Abtragarm 5 and the Abtragturm 3 and to a pneumatic fiber flake transport system 17.
  • the fiber flake transport system 17 and thus also the transport path from the removal roller 15 to the fiber flake transport system 17 are under a certain negative pressure, which is used for pneumatic conveying of the fiber flakes from the discharge roller 15 by the fiber fluff transport system 17.
  • the attachment of Abtragarms 5 on Abtragturm 3 is made adjustable in height, so that the fiber bales 2 can be removed continuously.
  • the movement 14 of the ablation tower 5 serves to ensure a uniform removal of the fiber flakes 16 from the surface of the fiber bales 2.
  • FIG. 3 shows a schematic view of the Abtragarms 5 in a sectional view AA after FIG. 2 ,
  • the Abtragarm 5 is shown schematically and only partially and without the removal roller. It is the lifting mechanism for movement 14 of the Abtragarms 5 in one exemplary embodiment shown.
  • Attached to Abtragarm 5 is a ball nut 9.
  • the ball nut 9 encloses a lifting spindle 6.
  • the ball nut 9 is rotatably held with its housing on the Abtragarm 5.
  • the ball nut 9 is rotated by a drive (not shown), whereby it runs along with the Abtragarm 5 of the lifting spindle 6 along.
  • the lifting spindle 6 is held against rotation with its upper end with a fastening 18 on the ablation tower 3.
  • the lifting spindle 6 is suspended in the attachment 18, so that no lower securing the lifting spindle 6 is necessary. Above and below the ball nut 9, the lifting spindle 6 is enclosed by a respective bellows 19.
  • the bellows 19 adapts automatically to the respective length of the section of the lifting spindle 6 and avoids that contamination of the threaded grooves of the lifting spindle 6 can cause a malfunction of the ball screw.
  • the guide is composed of two opposing U-shaped guide rails 8 and provided on the Abtragarm 5 transverse rollers 20 and longitudinal rollers 21.
  • the transverse rollers 20 and the longitudinal rollers 21 are on each side the guide 7 arranged in pairs and engage in the guide rail 8.
  • the transverse rollers 20 touch the U-shaped guide rail 8 in its rear, attached to the discharge tower 3, flange.
  • the transverse rollers 20 of the Abtragarm is guided in the transverse direction.
  • the transverse rollers 20 prevent rotation of the Abtragarms 5 about its longitudinal axis 22.
  • the longitudinal rollers 21 are offset from each other and touch the U-shaped guide rails 8 in the protruding from the rear flange webs.
  • the longitudinal rollers 21 serve to position the Abtragarm 5 in the longitudinal axis 22 of the Abtragarms 5 and thereby keep in the horizontal while preventing rotation of the Abtragarmes about the longitudinal axis 8 of the lifting spindle 6.
  • the direction of rotation indicated by arrows in the longitudinal rollers 21 and the transverse rollers 20 results in a movement 14 of the Abtragarms 5 upwards.
  • a transverse roller 20 and a longitudinal roller 21 can each be combined to form a combined roller with a common journal.
  • FIG. 4 shows a schematic plan view of the Abtragarms 5 after FIG. 2 ,
  • the Abtragarm 5 is cantilevered on Abtragturm 3 held on the guide 7.
  • the guide 7 is by two opposing U-shaped guide rails 8, which are fixed to the ablation tower 3, and arranged in pairs transverse rollers 20 and longitudinal rollers 21, which are held on the Abtragarm 5 executed.
  • In the illustration after FIG. 4 only two opposing transverse and longitudinal roller pairs 20, 21 are shown. However, there are also arranged on both sides two superimposed transverse and longitudinal roller pairs 20, 21 (see FIG. 3 ).
  • the lifting spindle 6 which is encompassed by the ball nut 9. It is also an arrangement of the lifting spindle 6 outside the Abtragarms 5 conceivable because the lifting spindle only has to bear forces in its longitudinal axis and therefore the arrangement plays a minor role.
  • the ball nut 9 is connected to a drive 10 mounted in the Abtragarm.
  • the ball nut 9 is set in rotation, which depending on the direction of rotation to a lifting respectively lowering the Abtragarms 5 leads.
  • the transverse rollers 20 and the longitudinal rollers 21 are thereby moved in the guide rails 8 about their axes and hold the Abtragarm 5 on the predetermined by the guide rails 8 path.
  • the transverse and longitudinal rollers 20, 21 and sliding elements can be used with appropriate dimensions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (9)

  1. Ouvreuse de balles (1), destinée à enlever des flocons de fibres de balles de fibres (2), comprenant une tour d'enlèvement (3), disposée sur un mécanisme de roulement (4) horizontale ou un support tournant, et un bras de support d'enlèvement (5), le bras d'enlèvement (5) étant maintenu de manière réglable en hauteur dans un guide (7) au niveau de la tour d'enlèvement (3), une seule broche de levage (6) pourvue d'un axe longitudinal (8) dans la direction de déplacement du bras d'enlèvement (5) étant prévu pour déplacer en hauteur le bras d'enlèvement (5), la broche de levage (6) étant fixée de manière immobile à la tour d'enlèvement (3), caractérisée en ce que la fixation de la broche de levage (6) est prévue au niveau de la tour d'enlèvement (3) seulement à une extrémité supérieure de la broche de levage (6) et la broche de levage (6) n'est pas maintenue dans la tour d'enlèvement (3) à une extrémité inférieure et en ce que le bras de levage (5) est relié à la broche de levage (6) par le biais d'un écrou à circulation de billes (9) et la broche de levage (6) fixe solidairement en rotation et l'écrou à circulation de billes (9) est muni d'un entraînement (10).
  2. Ouvreuse de balles (1) selon la revendication 1, caractérisée en ce que le guide (7) du bras d'enlèvement (5) est formé dans la tour d'enlèvement (3) de manière à charger la broche de levage (6) uniquement avec des forces en direction de son axe longitudinal (8).
  3. Ouvreuse de balles (1) selon l'une des revendications précédentes, caractérisée en ce que le guide (7) comporte au moins deux rails de guidage (11) en forme de U qui sont espacés l'un de l'autre et qui sont fixés à la tour d'enlèvement (3) dans la direction de l'axe longitudinal (8) de la broche de levage (6).
  4. Ouvreuse de balles (1) selon l'une des revendications précédentes, caractérisée en ce que la broche de levage (6) est disposée à l'extérieur d'un axe de centre de gravité du bras d'enlèvement (5).
  5. Ouvreuse de balles (1) selon l'une quelconque des revendications précédentes, caractérisée en ce que des rouleaux ou des éléments de glissement sont montés sur le bras d'enlèvement (5), lesquels sont en appui sur le guide (7) dans la tour d'enlèvement (3) de façon à réaliser un guidage sans jeu du bras d'enlèvement (5).
  6. Ouvreuse de balles (1) selon l'une des revendications précédentes, caractérisée en ce que l'entraînement (10) est un servomoteur synchrone.
  7. Ouvreuse de balles (1) selon l'une des revendications précédentes, caractérisée en ce que des capteurs sont prévus dans l'entraînement (10), lesquels permettent une détermination de la position du bras d'enlèvement (5) sur sa hauteur, ainsi qu'un réglage en hauteur défini du bras d'enlèvement (5).
  8. Ouvreuse de balles (1) selon l'une des revendications précédentes, caractérisée en ce que la fixation de la broche de levage (6) est prévue au niveau de la tour d'enlèvement (3) par le biais d'une boîte dynamométrique (15).
  9. Ouvreuse de balles (1) selon la revendication 5, caractérisée en ce que les rouleaux, montés sur le bras d'enlèvement (5), comprennent au moins un rouleau combiné, de préférence quatre rouleaux combinés.
EP15002767.0A 2014-10-16 2015-09-25 Ouvreuse de balles Not-in-force EP3009538B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01581/14A CH710257A1 (de) 2014-10-16 2014-10-16 Ballenöffner.

Publications (2)

Publication Number Publication Date
EP3009538A1 EP3009538A1 (fr) 2016-04-20
EP3009538B1 true EP3009538B1 (fr) 2018-11-07

Family

ID=54608224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15002767.0A Not-in-force EP3009538B1 (fr) 2014-10-16 2015-09-25 Ouvreuse de balles

Country Status (4)

Country Link
US (1) US10190238B2 (fr)
EP (1) EP3009538B1 (fr)
CN (1) CN105523387A (fr)
CH (1) CH710257A1 (fr)

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CH710258A1 (de) * 2014-10-16 2016-04-29 Rieter Ag Maschf Ballenöffner.
CH712367A1 (de) 2016-04-15 2017-10-31 Rieter Ag Maschf Verfahren zur Kalibrierung der Aufliegekraft eines Abtragorgans eines Ballenöffners und Ballenöffner.
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CH714726A1 (de) * 2018-03-07 2019-09-13 Rieter Ag Maschf Abtragarm für einen Ballenöffner.

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US20160108559A1 (en) 2016-04-21
US10190238B2 (en) 2019-01-29
CN105523387A (zh) 2016-04-27
EP3009538A1 (fr) 2016-04-20
CH710257A1 (de) 2016-04-29

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