EP4177195A1 - Positioning method and device for a service carriage of a textile machine, and a textile machine comprising such a device - Google Patents

Positioning method and device for a service carriage of a textile machine, and a textile machine comprising such a device Download PDF

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Publication number
EP4177195A1
EP4177195A1 EP22203492.8A EP22203492A EP4177195A1 EP 4177195 A1 EP4177195 A1 EP 4177195A1 EP 22203492 A EP22203492 A EP 22203492A EP 4177195 A1 EP4177195 A1 EP 4177195A1
Authority
EP
European Patent Office
Prior art keywords
carriage
positioning
textile machine
service carriage
service
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.)
Pending
Application number
EP22203492.8A
Other languages
German (de)
English (en)
French (fr)
Inventor
Massimo Velludo
Matteo CORONA
Michele Simonatto
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.)
Savio Macchine Tessili SpA
Original Assignee
Savio Macchine Tessili SpA
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 Savio Macchine Tessili SpA filed Critical Savio Macchine Tessili SpA
Publication of EP4177195A1 publication Critical patent/EP4177195A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
    • B65H54/26—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores having one or more servicing units moving along a plurality of fixed winding units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/005—Service carriages travelling along the machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a positioning device for a service carriage of a textile machine, a textile machine comprising such a device, and a method for positioning a service carriage in a textile machine.
  • each service carriage patrols the machine in the longitudinal direction, moving on special guides by means of handling means thereof, which are operated and managed by a processing and control unit to allow to position the carriage at a unit which, after sending a specific signal, requires the intervention thereof.
  • the known systems make use, for example, of positioning devices of the transmitter/receiver type, with radio frequency or with laser scanners and barcode, which however entail considerable operating disadvantages, firstly the complexity of construction at the expense of the unit and the carriage and the sensitivity to dirt, with the consequent need for frequent cleaning and maintenance to avoid compromising the operation thereof.
  • a positioning device comprising a mechanical system consisting of a stop arranged on the service carriage, such as an electrically or pneumatically operated retractable lever, which engages inside a corresponding seat obtained in a fixed position of the unit.
  • the device comprises an optical LED system of the transmitter/receiver type which allows the service carriage to decipher an identification code of a unit, such as the unit number.
  • Another known solution involves an optical communication system between the carriage and the unit, while the mechanical centring is replaced by a reflection system which uses a reflector.
  • the operation is particularly compromised by the dirt induced by the fibrils which come to settle thereon, partially or completely obscuring the reflector.
  • a laser provided with the service carriage capable of reading the projection of a reference element of the unit, typically a plate made of plastic in the shape of a parallelepiped. By reading several points of the projection, the carriage is able to interpolate the nominal centring position.
  • the identification of the number of units is instead carried out by means of a radio frequency system in which an antenna on the carriage generates an electric field which excites the circuit of a passive tag installed on the head.
  • Figure 2 shows a possible embodiment of a positioning device 12 for a service carriage 14 of a textile machine 16 comprising at least two operating units 18.
  • the device comprises handling means 15 for moving the service carriage 14 along the textile machine 16.
  • the device comprises positioning means 34 for positioning the service carriage 14 at an operating unit 18.
  • the device comprises a control unit 40 operatively connected to the handling means 15, and to the positioning means 34.
  • the positioning means 34 comprise at least one position transducer 38 for positioning the service carriage 14 with respect to an operating unit 18.
  • the position transducer 38 is operatively connected to the control unit 40.
  • the control unit 40 is configured to operate the handling means 15 to move the at least one service carriage 14 at an operating unit 18 by the positioning means 34.
  • the handling means 15 can comprise translation wheels 20, 22, 24, 26 keyed on respective axes 28, 30, 32.
  • the axis of a translation wheel means both the mechanical component which defines the wheel support and its axis of rotation.
  • the position transducer 38 can be arranged at an axis 28, 30, 32 of a translation wheel 20, 22, 24, 26.
  • the service carriage 14 moving along the textile machine, performs the positioning with respect to the operating unit which requires the intervention of the service carriage, for example to carry out the lifting or reattachment cycle.
  • the at least one position transducer 38 can be arranged at an axis 32 of a translation wheel 24, which can be a motorized translation wheel, or idle.
  • the at least one position transducer 38 can be arranged at an axis 32 of an idle translation wheel 24.
  • This solution has the advantage that the idle wheel is less prone to any slippage on the sliding surface with respect to a driving wheel.
  • the position transducer 38 can be an encoder, i.e., an angular position transducer, preferably of an absolute multi-turn type.
  • the device can comprise centring means 36.
  • the centring means 36 can comprise a laser scanner 42 adapted to identify a reference element 44 of an operating unit 18.
  • the reference element 44 can be a projection, for example in polymeric material.
  • centring means 36 can comprise other types of centring devices known to the person skilled in the art.
  • the positioning means 34 can comprise the position transducer 38, and the centring means 36 can comprise a further or the same position transducer 38.
  • the position transducer used for the centring means can have a higher precision than a transducer used for mere positioning.
  • the positioning device 12 can comprise motor means 46 adapted to rotate at least one of the translation wheels 20, 22, 24, 26.
  • the translation wheels 20, 22, 24, 26 can be arranged at the vertices of a rectangle.
  • the driving wheels 20, 22 can be keyed on the same axis 28, while the driven wheels 24, 26 can be keyed on axles 30, 32 independent of each other.
  • the motor means 46 can be of a known type, such as an electric motor.
  • the motor means can transmit the rotation motion to an axis 28 to which two translation wheels 20, 22 are keyed by means of a belt 52 which engages a corresponding pulley 54 arranged on the axis 28.
  • the motor means can transmit the rotation motion to an axis 28 on which a translation wheel is keyed in another manner, for example by using a transmission chain coupled with a respective toothed gear, or through the use of toothed wheels.
  • the present invention further relates to a textile machine 16 comprising at least two operating units 18 and at least one service carriage 14 adapted to serve the operating units 18 and equipped with a positioning device 12 as described above.
  • the textile machine 16 comprises a machine control unit 40 operatively connected to the positioning device 12, and can advantageously be the control unit 40 operatively connected to the handling means 15, the positioning means 34 and any centring means 36.
  • the textile machine 16 can comprise sliding rails 48 for the translation wheels 20, 22, 24, 26.
  • the industrial textile machine 16 can be a spinning mill, or a spooling machine.
  • the service carriage 14 can be an automatic or semi-automatic lifting carriage, or an automatic or semi-automatic reattachment carriage.
  • the present invention further relates to a method for positioning a service carriage 14 in a textile machine 12 comprising at least two operating units 18 and at least one service carriage 14, which essentially comprises the steps of:
  • the positioning or centring of the service carriage occurs by means of the position transducer 38.
  • the method can comprise a step in which the positioning of the service carriage 14 occurs by means of the position transducer 38, in particular an absolute multi-turn encoder.
  • the method can comprise a step in which the control unit 40 based on the operating information of the service carriages 14 decides which of the service carriages 14 to send to the operating unit 18 which requested the service.
  • the method can comprise an initial step of zeroing the position of the service carriage 14 with respect to a reference position of each operating unit 18, in which each position is defined by an operating unit identification number 18 and by an absolute position detected by the position transducer 38.
  • the initial zeroing step can be performed by manually positioning the service carriage in front of each operating unit to absolutely define a two-way correspondence between the specific operating unit and the encoder position.
  • the information related to the absolute positioning of each operating unit can be expressed with two variables, for example number of units j and angular position ⁇ j of the encoder.
  • Such information can be stored in a memory, for example in the form of a table, comprised in or connected to the central control unit 40.
  • such information can be stored in a control unit memory of a service carriage 14.
  • control unit of the machine or on board the service carriage is configured to operate the handling means and move the service carriage at the requesting operating unit, after associating the requesting unit number with the absolute position assumed therein by the encoder and stored by the control unit at the first start-up of the machine.
  • the absolute position provided by the encoder can also be used as centring information.
  • the carriage can proceed further in its stroke for a maximum tolerable section until the corresponding reference notch is intercepted with the laser, thus obtaining the actual centring.
  • the new angular position which is read by the encoder can be written over the previous one. Thereby, the correct absolute positioning can be restored by compensating for the slippage error so as to arrange the carriage to reach a new unit.
  • the position transducer arranged on the carriage handling means allows the actual movement of the carriage to be considered by the position transducer.
  • the handling means thereof coincide with the translation axes at the ends of which the translation wheels are keyed. The solution is therefore particularly advantageous if the encoder is arranged at the axis of a wheel, and even more advantageous if the encoder is arranged at the axis of an idle wheel.
  • the device according to the present invention allows greater compactness due to the possibility of integrating it directly within the carriage handling means, with consequent simplification of the machine and carriage architecture.
  • the device allows to automatically compensate the effect of the wear of the wheels and/or the sliding which can be created between the wheels and the sliding plane, for example due to the deposit of fibrils and/or paraffin sprayed on the tracks, with consequent lower disruption of the positioning of the carriage, lower maintenance demand and consequent greater productivity of the machine.
  • the system is also less sensitive to dirt by virtue of the possibility of housing the encoder inside the closed compartment which houses the carriage translation assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP22203492.8A 2021-11-03 2022-10-25 Positioning method and device for a service carriage of a textile machine, and a textile machine comprising such a device Pending EP4177195A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000028001A IT202100028001A1 (it) 2021-11-03 2021-11-03 Dispositivo e procedimento di posizionamento per carrello di servizio di una macchina tessile, e macchina tessile comprendente tale dispositivo

Publications (1)

Publication Number Publication Date
EP4177195A1 true EP4177195A1 (en) 2023-05-10

Family

ID=79164543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22203492.8A Pending EP4177195A1 (en) 2021-11-03 2022-10-25 Positioning method and device for a service carriage of a textile machine, and a textile machine comprising such a device

Country Status (3)

Country Link
EP (1) EP4177195A1 (zh)
CN (2) CN116065272A (zh)
IT (1) IT202100028001A1 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1659082A2 (en) * 2004-11-19 2006-05-24 Murata Kikai Kabushiki Kaisha Textile machine
DE102009036777A1 (de) * 2009-08-08 2011-02-10 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben eines Serviceaggregats und Serviceaggregat
WO2019011548A1 (de) * 2017-07-12 2019-01-17 Oerlikon Textile Gmbh & Co. Kg Schmelzspinnvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1659082A2 (en) * 2004-11-19 2006-05-24 Murata Kikai Kabushiki Kaisha Textile machine
DE102009036777A1 (de) * 2009-08-08 2011-02-10 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben eines Serviceaggregats und Serviceaggregat
WO2019011548A1 (de) * 2017-07-12 2019-01-17 Oerlikon Textile Gmbh & Co. Kg Schmelzspinnvorrichtung

Also Published As

Publication number Publication date
IT202100028001A1 (it) 2023-05-03
CN116065272A (zh) 2023-05-05
CN218861001U (zh) 2023-04-14

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