EP2322701B1 - Device and method for the automatic pick-up of fibre from a bale of fibre on a spinning line - Google Patents

Device and method for the automatic pick-up of fibre from a bale of fibre on a spinning line Download PDF

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Publication number
EP2322701B1
EP2322701B1 EP10181313A EP10181313A EP2322701B1 EP 2322701 B1 EP2322701 B1 EP 2322701B1 EP 10181313 A EP10181313 A EP 10181313A EP 10181313 A EP10181313 A EP 10181313A EP 2322701 B1 EP2322701 B1 EP 2322701B1
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EP
European Patent Office
Prior art keywords
pick
bales
arm
fibre
control means
Prior art date
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Application number
EP10181313A
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German (de)
English (en)
French (fr)
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EP2322701A1 (en
Inventor
Mario Mascheretti
Daniele Raccagni
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Marzoli SpA
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Marzoli SpA
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Publication of EP2322701A1 publication Critical patent/EP2322701A1/en
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    • 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
    • D01G7/10—Arrangements for discharging fibres
    • 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 present invention relates to a device and method for the automatic pick-up of fibre from a bale of fibre on a textile processing line.
  • bales it is rare for all the bales to have the same geographical provenance or be composed of the same fibres; normally, in fact since natural fibre has characteristics which are highly dependent on the place of origin and the type of plant, fibres are mixed to obtain a final yarn having the desired quality characteristics and to minimise production costs.
  • the bales are usually positioned in a row along the side of the pick-up device and are not all the same height, so that, when placed in a row, they have a staggered outline.
  • the bales are not the same density, precisely on account of their different provenance and quality of the fibre. Within the same bale, moreover, differences in density occur, being less dense on the free upper surface (that is the bale is softer on the surface) and denser in the middle (the bale, that is, in the centre).
  • the pick-up device is usually composed of a column translating on tracks, which the row of bales flanks; the column bears a swing arm which passes over the bales and picks up a layer of fibre, usually using rotating rollers fitted with tips.
  • the column has an outbound and a return movement along the tracks, so that at each passage the arm picks up a layer of fibre.
  • pick-up device is described, for example in document EP-A1-1571244 , in the name of the Applicant.
  • the outline of the bales is staggered and the density of the fibre is not constant.
  • some pick-up devices foresee setting of the height at which to commence pick-up and the thickness of the layer to be picked; at each passage the machine lowers the arm to pick up a further layer. During a single passage, the height of the arm remains constant.
  • Such devices can cause problems, especially on start-up of the process, when the outline is staggered, and on account of the different densities of the fibre.
  • the B12N device manufactured by Marzoli S.p.A. is, instead, an automatic pick-up device, fitted with an arm the height of which is regulated depending on the pressure of the arm on the bale; such device operates perfectly even on start-up of the process.
  • the purpose of the present invention is to further improve an automatic device and to identify an improved method for picking up fibre from bales of fibre.
  • a pick-up device comprising:
  • - actuation means able to move the arm vertically in a controlled manner
  • - first control means able to condition the actuation means to control the vertical movement of the arm on the basis of the values of a first set of parameters which define the state of the bales or of the pick-up device;
  • - second control means able to condition the actuation means to control the vertical movement of the arm on the basis of the values of a second set of parameters which define the state of the bales or of the pick-up device;
  • - enabling means able to activate the first control means or the second control means according to the values of a set of selection parameters, which define a state of the bales or of the pick-up device, to condition said actuation means by means of the first control means or the second control means.
  • FIG. 1 shows an axonometric view of a pick-up device of fibre from a bale of fibre according to the present invention, according to a preferred embodiment
  • FIG. 2 shows a functioning diagram of the pick-up device according to the present invention
  • FIG. 3 shows a diagram of an arm of the pick-up device according to the present invention
  • reference numeral 1 globally denotes a pick-up unit on a fibre processing line.
  • the unit 1 comprises a track 2 having a main extension along a translation axis X.
  • the bales of fibre are positioned along the track 2, along one or both sides of said track, sometimes continuously, sometimes distanced from each other. Such bales occupy a pick-up area, alongside the track 2, on the ground.
  • the unit 1 comprises an expulsion duct 3, communicating with further devices downstream of the pick-up device, performing subsequent processing or air aspiration.
  • the expulsion duct 3 is positioned between the rails of the track 2.
  • the unit 1 further comprises a pick-up device 4, resting on the track 2 and translatable upon command along it.
  • the device 4 comprises a carriage 6, for example fitted with wheels, resting on the track 2, and a column 8 having its main extension along a vertical axis Y, resting on the carriage 6.
  • the device 4 further comprises an arm 10 jutting out from the column so as to lie over the pick-up area where the bales are positioned; in other words the arm is shaped like a flag.
  • the column 8 or the arm 10 can rotate around the vertical axis Y, to pick up fibre from the bales positioned on one or other side of the track 2.
  • the pick-up device 4 further comprises pick-up means of the fibre from the bales, such as at least one pick-up roller of fibre from the bale, supported by the arm 10.
  • the device 4 comprises a pair of pick-up rollers 11a, 11b rotating upon command around respective longitudinally distanced rotation axes 11c, 11d.
  • the pick-up rollers 11a, 11b are equipped on the surface with tips 12 able to tear the fibre from the bales.
  • the device 4 comprises a cage 14 fitted with pressure bars 14a having a longitudinal extension and positioned vertically, distanced from the rotation axes 11c, 11d, so that the tips of these project below the bars 14a to tear off the fibre.
  • the relative distance between the pressure bars 14a and the rotation axes 11c, 11d of the rollers 11a, 11b is adjustable for example by means of an electric motor fitted onto the arm 10.
  • the device 4 further comprises transport means for transport of the fibre to subsequent processes, such as an aspiration duct 16 having an aspiration aperture at the point of the pick-up rollers 11a, 11b to aspirate the fibre picked up by the tips 12 from the rollers.
  • transport means for transport of the fibre to subsequent processes such as an aspiration duct 16 having an aspiration aperture at the point of the pick-up rollers 11a, 11b to aspirate the fibre picked up by the tips 12 from the rollers.
  • the aspiration duct 16 is housed in the arm 10 and the rollers 11a, 11b are contained therein, it extends further in the column 8 and is in communication, even while the column 8 is in translation, with the expulsion duct 3, to bring the fibre to subsequent processes.
  • the arm 10 can translate vertically upon command along the column 8.
  • the device 1 comprises transmission means able to move the arm vertically, sliding along the column and actuation means able to drive the transmission.
  • the actuation means comprise an electric motor 12, preferably a permanent magnet synchronous feedback motor, that is provided with feedback means 13, for example fitted on the pick-up device 4, and a processing device 13a to send the motor 12 the actuation signals.
  • the feedback means of the electric motor 12 comprise a resolver and/or encoder operatively connected to the motor shaft.
  • the transmission means further comprise, for example, sliding guides which the arm 10 slides on, and a kinematic chain able to transform the rotatory movement of the motor shaft into a vertical translatory movement of the arm 10.
  • the pick-up device 4 further comprises main control means able to detect the height of the bales and to send respective signals to the actuation means to raise and/or lower the arm so that the pick-up rollers are positioned at the right height to pick-up the layer of fibre of the pre-set thickness from the free upper surface of each bale.
  • the arm 10 is commanded to pass over the bales, measuring the length of the bales, in other words their extension along the direction of the track, their position and their height.
  • the observed data is for example memorised in an estimation device 18, the estimation device 18 is operatively connected to the actuation means by the processing device 13a.
  • the pick-up device 4 comprises first control means able to condition the actuation means to keep the force of the arm 10 on the bales constant.
  • said first control means comprise the feedback means 13 of the motor 12.
  • said first control means are able to control the electric motor 12 to function at a constant torque.
  • the pick-up device 4 comprises second control means able to condition the actuation means to keep the vertical movement of the arm constant.
  • said second control means comprise the feedback means 13 of the motor 12.
  • said second control means are able to command the motor to function at a constant pitch, that is so that at each passage of the arm over the bales, the motor shaft rotates by a pre-set constant angle between one passage and the next.
  • the pick-up device 4 comprises enabling means 26, preferably automatic, able to actuate the first and second control means to condition the actuation means.
  • the enabling means 26 are operatively connected to the feedback means 13 of the motor 12 to receive signals depending on the height of the arm 10 by means of a memorisation device 32 which memorises the heights of the arm at each passage over the bales, and a comparison device 34 which estimates the heights and sends a selection signal according to the values found for the heights.
  • the comparison device estimates the containment of the height variation within a pre-set range. If the height variation of the arm falls within the pre-set range, the comparison device 34 sends a selection signal to activate the enabling means 26 enabling control of the actuation means by the second control means.
  • the comparison device 34 estimates the lowering of the heights below a pre-set minimum value. If the heights are below a pre-set minimum value, the comparison device 34 sends a further actuation selection signal to the enabling means 26 which enable conditioning of the actuation means by means of the first control means.
  • the pick-up device 4 comprises third control means 40 able to adjust the relative position of the pick-up rollers 11a 11b and the cage 14, and in particular the pressure bars 14a of said cage 14.
  • the third control means 40 are operatively connected to the processing device 13a.
  • the extent of the projection of the tips 12 below the pressure bars 14a can be adjusted, increasing or reducing how far the tips sink into the bales.
  • the bales A-D are initially positioned beside one another, more or less continuously, to the side of the track 2 along the translation axis X in the pick-up area and are of variable height ( figure 4a ).
  • the actuation means are conditioned by the first control means.
  • the electric motor 12 is controlled at a constant torque.
  • the main control means 18 condition the actuation means so that the arm translates vertically bringing the tips of the pick-up rollers 11a, 11b to lie against the free surface of the bales and the first control means condition the actuation mean so that the arm 10 operates at a constant force on the bales.
  • the density of the bales at start-up is low so that the bale is soft; operating at a constant force therefore constitutes a considerable advantage, in that the bale is compressed by the arm until it resists with a predefined force optimal for removal of the fibre. Moreover, by proceeding at a constant force, processing leads to a progressive levelling of the outline of the bales.
  • the third means of control are also active in such configuration, to vary the penetration of the tips into the fibre by adjusting the relative distance between the pressure bars 14a of the cage 14 and the rotation axes 11c, 11d of the pick-up rollers 11a, 11b.
  • the third control means operate to increase pick-up (by bringing the pressure bars 14a of the cage 14 closer to the rotation axes 11c,11d of the pick-up rollers 11a, 11b) when the arm 10 rises, and vice versa, so as to speed up levelling of the outline of the bales.
  • the bales A-D tend to level out ( figure 4b ), until they reach a configuration in which the variation of the heights of the bales is contained within a pre-set range (I).
  • the comparison device 34 estimates the containment of the heights of the free surfaces of the bales within the pre-set range I and sends a second selection signal to the enabling means 26 so that the second control means are enabled and therefore said second control means condition the actuation means; the actuation means therefore operate so as to keep the lowering of the arm 10 at each passage constant.
  • the motor 12 is controlled at a constant pitch which ensures constant lowering of the arm.
  • bales being processed in this phase are very soft, or contain synthetic or "pigneuse" fibre.
  • the prior machines rather, in such condition, reveal considerable drawbacks, especially if the arm is controlled at a constant force; in such case the arm shows a tendency to sink, pushing to the ground laps of bales or entire bales, especially at the sides of the row of bales.
  • the machine according to the invention proves particularly advantageous for processing traditional fibres such as cotton, for which the density of the bales is greater than in the previous condition and operating at a constant pitch is extremely advantageous for maintaining levelling of the outline and speeding up pick-up.
  • the third means of control are also active in such configuration, to vary the penetration of the tips into the fibre by adjusting the relative distance between the pressure bars 14a of the cage 14 and the rotation axes 11c, 11d of the pick-up rollers 11a, 11b, for example so as to modify the quantity of fibre picked up depending on the demand made by the machines downstream.
  • the bales A-D tend to level out ( figure 4c ), until they reach a configuration in which the height of the bales is below a pre-set threshold value L.
  • the bales are not high enough to be elastic, feeling the hardness of the floor; the density of the bales is, additionally, once again low.
  • the comparison device 34 detects that the height of the arm 10 is below the pre-set threshold value L and sends a first selection signal to the enabling means 26 so that the first control means are enabled and therefore said first control means condition the actuation means; the actuation means therefore operate so as to maintain the force of the arm on the bales constant.
  • the third means of control are also active in such configuration, to vary the penetration of the tips into the fibre by adjusting the relative distance between the pressure bars 14a of the cage 14 and the rotation axes 11c, 11d of the pick-up rollers 11a, 11b.
  • the pick-up device and method according to the present invention operate in an excellent manner on all the configurations of the bales, from start-up of pick-up from new bales to the end of pick-up from almost exhausted bales.
  • the pick-up device and method according to the present invention also operate excellently on bales of fibres of varying origin, that is with natural fibres, such as cotton and with fibres from combing discards or with synthetic fibres.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP10181313A 2009-11-16 2010-09-28 Device and method for the automatic pick-up of fibre from a bale of fibre on a spinning line Active EP2322701B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBS2009A000208A IT1396418B1 (it) 2009-11-16 2009-11-16 Dispositivo e metodo per il prelievo automatico di fibra da balle di fibra in una linea di filatura.

Publications (2)

Publication Number Publication Date
EP2322701A1 EP2322701A1 (en) 2011-05-18
EP2322701B1 true EP2322701B1 (en) 2013-03-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10181313A Active EP2322701B1 (en) 2009-11-16 2010-09-28 Device and method for the automatic pick-up of fibre from a bale of fibre on a spinning line

Country Status (4)

Country Link
EP (1) EP2322701B1 (it)
CN (1) CN102061535B (it)
BR (1) BRPI1004600B1 (it)
IT (1) IT1396418B1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107299420A (zh) * 2016-04-15 2017-10-27 里特机械公司 用于校准开包机的拆散器元件的加载力的方法和开包机

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013076739A2 (en) * 2011-11-18 2013-05-30 Lakshmi Machine Works Ltd. An improved holding arrangement for plucking head field of the invention
CH710257A1 (de) 2014-10-16 2016-04-29 Rieter Ag Maschf Ballenöffner.
CH710258A1 (de) * 2014-10-16 2016-04-29 Rieter Ag Maschf Ballenöffner.
CH712410A1 (de) * 2016-04-29 2017-10-31 Rieter Ag Maschf Ballenöffner.
DE102017109520A1 (de) * 2016-08-15 2018-02-15 TRüTZSCHLER GMBH & CO. KG Ballenöffner
CN106637540B (zh) * 2017-02-22 2018-11-23 湖州东凯纺织有限公司 一种可调节式抓棉小车
CH714726A1 (de) 2018-03-07 2019-09-13 Rieter Ag Maschf Abtragarm für einen Ballenöffner.
DE102018110677A1 (de) * 2018-05-04 2019-11-07 TRüTZSCHLER GMBH & CO. KG Ballenöffner mit einem Maschinengestell in Portalbauweise und mit einer an dem Maschinengestell angeordneten Abnehmereinheit
CN110241486B (zh) * 2019-06-04 2023-07-21 青岛宏大纺织机械有限责任公司 往复式抓棉机自动探包平包系统及控制方法
EP3789524A1 (en) 2019-09-03 2021-03-10 Maschinenfabrik Rieter AG Bale opener
CN114232140B (zh) * 2021-12-27 2023-03-31 安徽翰联色纺股份有限公司 一种往复抓棉机的抓棉装置

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DE2939890C3 (de) * 1979-10-02 1982-02-25 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Verfahren und Vorrichtung zum Öffnen und Mischen von Faserballen
IN166942B (it) * 1985-03-22 1990-08-11 Rieter Ag Maschf
DE3734480A1 (de) * 1987-10-12 1989-04-27 Schubert & Salzer Maschinen Verfahren und vorrichtung zum oeffnen von faserballen
IN172448B (it) * 1988-02-04 1993-08-07 Rieter Ag Maschf
DE8908276U1 (de) * 1988-08-02 1989-12-14 Trützschler GmbH & Co KG, 4050 Mönchengladbach Öffnungsvorrichtung zum Öffnen von gepreßten Faserballen, z.B. Baumwolle- und Zellwollballen u.dgl.
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ITMI20040412A1 (it) * 2004-03-04 2004-06-04 Marzoli Spa Dispositivo e procedimento per il prelievo automatico di fibre da balle di fibre
DE102007014612A1 (de) * 2007-03-23 2008-09-25 TRüTZSCHLER GMBH & CO. KG Vorrichtung zur Überwachung und Sicherung von Gefahrenbereichen an kraftgetriebenen Textilmaschinen, insbesondere Spinnereivorbereitungsmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107299420A (zh) * 2016-04-15 2017-10-27 里特机械公司 用于校准开包机的拆散器元件的加载力的方法和开包机
CN107299420B (zh) * 2016-04-15 2022-02-18 里特机械公司 用于校准开包机的拆散器元件的加载力的方法和开包机

Also Published As

Publication number Publication date
BRPI1004600B1 (pt) 2020-04-28
CN102061535A (zh) 2011-05-18
BRPI1004600A2 (pt) 2012-06-26
IT1396418B1 (it) 2012-11-23
CN102061535B (zh) 2014-11-26
ITBS20090208A1 (it) 2011-05-17
EP2322701A1 (en) 2011-05-18

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