EP3931382A1 - Ring spinning machine - Google Patents

Ring spinning machine

Info

Publication number
EP3931382A1
EP3931382A1 EP20712686.3A EP20712686A EP3931382A1 EP 3931382 A1 EP3931382 A1 EP 3931382A1 EP 20712686 A EP20712686 A EP 20712686A EP 3931382 A1 EP3931382 A1 EP 3931382A1
Authority
EP
European Patent Office
Prior art keywords
spindles
spinning machine
machine according
bank
group
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.)
Granted
Application number
EP20712686.3A
Other languages
German (de)
French (fr)
Other versions
EP3931382B1 (en
Inventor
Rosario Assenza
Massimo Galli
Federico GRITTI
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.)
Marzoli Machines Textile SRL
Original Assignee
Marzoli Machines Textile SRL
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 Marzoli Machines Textile SRL filed Critical Marzoli Machines Textile SRL
Publication of EP3931382A1 publication Critical patent/EP3931382A1/en
Application granted granted Critical
Publication of EP3931382B1 publication Critical patent/EP3931382B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/24—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles
    • D01H1/241—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles driven by belt

Definitions

  • the subject-matter of the present invention is a ring spinning machine of a spinning line, to obtain bobbins of yarn from spools of roving, usually originating from a roving frame.
  • a spinning machine is able to process spools of roving to obtain bobbins of yarn therefrom, after having drafted and twisted the roving.
  • the spinning machine consists of a gantry that extends along a longitudinal axis on which are hung the spools of roving, a drafting device placed beneath the gantry consisting of a set of cylinders having longitudinal extension between which the roving passes to be drafted, and a bank carrying the spindles in a row along the longitudinal axis, rotating about their vertical axes, on which the drafted and twisted yarn is wound .
  • the spindles are rotated about the vertical axis by a belt driving device, in which the belt is driven by an electric motor and engages spindles of the two banks.
  • the object of the present invention is to construct a ring spinning machine that satisfies the requirements of the sector and overcomes the drawbacks mentioned above .
  • FIG. 1 schematically illustrates a portion of a ring spinning machine according to the present invention
  • FIG. 2 depicts a diagram of the spinning machine, according to an embodiment of the present invention.
  • a spinning machine of a spinning line for the production of bobbins of yarn from spools of roving S is indicated collectively at 1.
  • the spinning machine 1 comprises a gantry 2 extending along a longitudinal axis X, from which the spools of roving S are hung at a predefined height.
  • the spinning machine 1 further comprises a drafting device 4 located below the gantry 2.
  • the drafting device 4 comprises lower longitudinal cylinders 6, generally three or four in number, motorized, longitudinally continuous or separated in juxtaposed sections, and a plurality of upper rollers 8, typically idle, coupled under pressure with the lower cylinders 6, to be driven by the latter to rotate.
  • Each upper roller 8 coupled to the lower cylinder 6 defines a spinning point; for each spinning point, a roving to be drafted passes between the upper roller 8 and the lower cylinder 6 due to the peripheral speed of the lower cylinders, which increases from upstream to downstream.
  • the spinning machine 1 Downstream of the drafting device 4, the spinning machine 1 further comprises a bank 10 carrying spindles 12, in a row along the longitudinal axis, rotating about their vertical axes, on which the drafted and twisted yarn is wound.
  • the spinning machine 1 further comprises a ring rail
  • the spinning machine 1 provides for a frame
  • the spinning machine 1 comprises two opposite banks 10A, 10B, along which are arranged respective spindles 12A, 12B aligned longitudinally, between a head 20 of the spinning machine 1 and a tail 22 of the spinning machine 1.
  • the spindles 12A, 12B are divided into two or more subgroups, in an orderly way from the head 2 0 to the tail 22 .
  • the reference 12An identifies the first spindle of the first subgroup of the first bank
  • 12A ⁇ j identifies the i-th spindle of the j-th group of the first bank.
  • the spindles 12An of the first subgroup of the first bank 1 0A and the spindles 12Bn of the first subgroup of the second bank 1 0B collectively make up the spindles ( 12A, 12B ) i of the first group of the spinning machine 1 .
  • the spindles 12A ⁇ j of the j-th subgroup of the first bank 1 0A and the spindles 12Bi j of the j-th subgroup of the second bank 1 0B collectively make up the spindles ( 12A, 12B ) j of the j-th group of the spinning machine 1.
  • the spinning machine 1 further comprises a driving device for each group of spindles (12A, 12B) j , suitable to rotate the spindles of said group of spindles (12A, 12B) j about their vertical axes.
  • Each driving device comprises a belt 30 j configured to drive the spindles (12A, 12B) j of the j-th group of the spinning machine 1; said belt 30 j is arranged along a closed path, tangentially engaging all the spindles of the respective group of spindles (12A, 12B) j .
  • Each driving device further comprises a plurality of electric motors for driving the respective belt.
  • said plurality of motors 40 qj comprises only one master motor with feedback, while the other motors are slaves and operatively connected in parallel to the master motor.
  • Each belt 30 j of one group of spindles (12A, 12B) j is mechanically independent of the belt 30 j of another group of spindles (12A, 12B) j .
  • the motors 40 qj of one group of spindles (12A, 12B) j are mechanically independent of the motors of another group of spindles (12A, 12B) j .
  • each driving device comprises a drive 50 j for electrically driving the motors 40 qj of the respective group of spindles.
  • the motors 40 qj of one group of spindles (12A, 12B) j are electrically independent of the motors 40 qj of another group of spindles (12A, 12B) j , being driven by their respective independent drives 50 j .
  • the spinning machine 1 comprises a control group 60, comprising a control panel usable by an employee to manage the operation of the entire spinning machine 1 and a single logic unit 62, for example a CPU or a PLC, for the control of the spinning machine 1.
  • a control group 60 comprising a control panel usable by an employee to manage the operation of the entire spinning machine 1 and a single logic unit 62, for example a CPU or a PLC, for the control of the spinning machine 1.
  • the spinning machine 1 further comprises drafting control means, operatively connected to the drafting devices, for the logic control of the drafting devices.
  • the spinning machine 1 comprises spindle control means, operatively connected to the drives 50 j , for the logic control of the motors 40 qj of each group of spindles (12A, 12B) j .
  • the spinning machine 1 comprises rail control means for the logic control of the ring rails 14 of the entire spinning machine 1.
  • Said drafting control means, spindle control means and rail control means are operatively linked to the logic unit 62 of the control group 60.
  • the spinning machine according to the present invention overcomes the drawbacks mentioned in reference to the prior art.
  • the Applicant has found that it is possible to maintain excellent synchronization between the electric motors, at least in part due to the low wear to which the individual belts are subjected.
  • the master/slave system allows for the distribution of electrical power between the motors of the group, while the belt ensures the synchronization of the motors .

Landscapes

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

Abstract

A ring spinning machine (1) comprises groups of spindles ((12A,12B)j) containing spindles (12Aij) of the first bank (20) and spindles (12Bij) of the second bank (22), and a plurality of belts (30j), wherein each belt (30j) engages all the spindles of a predefined group of spindles ((12A,12B)j). A plurality of driving devices is provided, each driving device being responsible for driving the belt (30j) of a predefined group of spindles ((12A,12B)j). Said driving device comprises at least one electric motor (40qj), operatively connected to the respective belt (30j) to drive it.

Description

"RING SPINNING MACHINE "
DESCRIPTION
[0001] The subject-matter of the present invention is a ring spinning machine of a spinning line, to obtain bobbins of yarn from spools of roving, usually originating from a roving frame.
[0002] As is known, a spinning machine is able to process spools of roving to obtain bobbins of yarn therefrom, after having drafted and twisted the roving.
[0003] For this purpose, the spinning machine consists of a gantry that extends along a longitudinal axis on which are hung the spools of roving, a drafting device placed beneath the gantry consisting of a set of cylinders having longitudinal extension between which the roving passes to be drafted, and a bank carrying the spindles in a row along the longitudinal axis, rotating about their vertical axes, on which the drafted and twisted yarn is wound .
[0004] To increase the productivity of the spinning machine, there are usually two opposite banks, each provided with a row of spindles.
[0005] The spindles are rotated about the vertical axis by a belt driving device, in which the belt is driven by an electric motor and engages spindles of the two banks.
[0006] There exist numerous solutions relating to driving devices for a spinning machine.
[0007] An example is described in the International Applications WO-A1-2009/040734 and WO-A1-2009/040839, in the publication EP-A1-0400260, in the Italian Patent Application No. 10 2018 000 009 103, all in the name of the Applicant. Other solutions are described in the documents US 5,590,514, US 4,944,144, WO-A1-2007/039260 and DE 2125597.
[0008] The current trend in the sector, however, is to provide banks with a very high number of spindles in order to increase the productivity of the spinning line.
[0009] However, the Applicant has found that increasing the number of spindles causes some drawbacks to arise, both in regard to the operation of the spinning machine and in regard to further aspects, such as the execution of maintenance operations.
[0010] For example, it has been found that, when the number of spindles is very high, for example above 1900, it is particularly difficult to maintain optimal synchronization in the RPM of the motors that control the rotation of the spindles, with further technical drawbacks .
[0011] The object of the present invention is to construct a ring spinning machine that satisfies the requirements of the sector and overcomes the drawbacks mentioned above .
[0012] This object is achieved by a spinning machine according to claim 1. The dependent claims define further advantageous embodiments of the invention.
[0013] The features and advantages of the ring spinning machine according to the present invention will be apparent from the description provided below, given by way of non-limiting example, in accordance with the accompanying figures, wherein:
- Figure 1 schematically illustrates a portion of a ring spinning machine according to the present invention;
- Figure 2 depicts a diagram of the spinning machine, according to an embodiment of the present invention.
[0014] With reference to the accompanying figures, a spinning machine of a spinning line for the production of bobbins of yarn from spools of roving S is indicated collectively at 1.
[0015] The spinning machine 1 comprises a gantry 2 extending along a longitudinal axis X, from which the spools of roving S are hung at a predefined height.
[0016] The spinning machine 1 further comprises a drafting device 4 located below the gantry 2.
[0017] The drafting device 4 comprises lower longitudinal cylinders 6, generally three or four in number, motorized, longitudinally continuous or separated in juxtaposed sections, and a plurality of upper rollers 8, typically idle, coupled under pressure with the lower cylinders 6, to be driven by the latter to rotate.
[0018] Each upper roller 8 coupled to the lower cylinder 6 defines a spinning point; for each spinning point, a roving to be drafted passes between the upper roller 8 and the lower cylinder 6 due to the peripheral speed of the lower cylinders, which increases from upstream to downstream.
[0019] Downstream of the drafting device 4, the spinning machine 1 further comprises a bank 10 carrying spindles 12, in a row along the longitudinal axis, rotating about their vertical axes, on which the drafted and twisted yarn is wound.
[0020] The spinning machine 1 further comprises a ring rail
14, with longitudinal extension, provided with alternating vertical motion, carrying rings 16 coaxial to the respective spindles 12, for winding the yarn on the tube .
[0021] Finally, the spinning machine 1 provides for a frame
18, preferably a single one, for supporting the main components, and in particular for supporting the drafting device 4, the bank 10, the ring rail 14.
[0022] Specifically, the spinning machine 1 comprises two opposite banks 10A, 10B, along which are arranged respective spindles 12A, 12B aligned longitudinally, between a head 20 of the spinning machine 1 and a tail 22 of the spinning machine 1.
[0023] On each bank 1 0A, 1 0B , the spindles 12A, 12B are divided into two or more subgroups, in an orderly way from the head 2 0 to the tail 22 . On the first bank 1 0 are thus defined the spindles 12A±j with i=l...n , where n is the total number of spindles in each subgroup of spindles, and with j=l...k, where k is the total number of subgroups on the first bank 1 0A . In other words, the reference 12An identifies the first spindle of the first subgroup of the first bank; 12A±j identifies the i-th spindle of the j-th group of the first bank.
[0024] In the same way, the spindles 12 B±j of the second bank 1 0B are identified.
[0025] The spindles of corresponding subgroups of the first and second bank form a relative group.
[0026] For example, the spindles 12An of the first subgroup of the first bank 1 0A and the spindles 12Bn of the first subgroup of the second bank 1 0B collectively make up the spindles ( 12A, 12B ) i of the first group of the spinning machine 1 . In general, the spindles 12A±j of the j-th subgroup of the first bank 1 0A and the spindles 12Bij of the j-th subgroup of the second bank 1 0B collectively make up the spindles ( 12A, 12B ) j of the j-th group of the spinning machine 1.
[0027] The spinning machine 1 further comprises a driving device for each group of spindles (12A, 12B)j, suitable to rotate the spindles of said group of spindles (12A, 12B)j about their vertical axes.
[0028] Each driving device comprises a belt 30j configured to drive the spindles (12A, 12B) j of the j-th group of the spinning machine 1; said belt 30j is arranged along a closed path, tangentially engaging all the spindles of the respective group of spindles (12A, 12B)j.
[0029] Each driving device further comprises a plurality of electric motors for driving the respective belt. In particular, each belt 30j is driven by several electric motors 40qj, (with q=l...p, where p is the total number of motors for the j-th group), usually arranged within the closed path defined by the respective belt 30j.
[0030] For each group of spindles (12A, 12B) j, said plurality of motors 40qj comprises only one master motor with feedback, while the other motors are slaves and operatively connected in parallel to the master motor.
[0031] Each belt 30j of one group of spindles (12A, 12B)j is mechanically independent of the belt 30j of another group of spindles (12A, 12B)j. Moreover, the motors 40qj of one group of spindles (12A, 12B)j are mechanically independent of the motors of another group of spindles (12A, 12B)j. In other words, for example, there are no mechanical transmission means of the motion between the belt of one group of spindles and the belt of another group of spindles, nor between the motors of one group of spindles and the motors of another group of spindles.
[0032] Moreover, each driving device comprises a drive 50j for electrically driving the motors 40qj of the respective group of spindles.
[0033] Preferably, the motors 40qj of one group of spindles (12A, 12B)j are electrically independent of the motors 40qj of another group of spindles (12A, 12B)j, being driven by their respective independent drives 50j.
[0034] Finally, the spinning machine 1 comprises a control group 60, comprising a control panel usable by an employee to manage the operation of the entire spinning machine 1 and a single logic unit 62, for example a CPU or a PLC, for the control of the spinning machine 1.
[0035] The spinning machine 1 further comprises drafting control means, operatively connected to the drafting devices, for the logic control of the drafting devices.
[0036] Moreover, the spinning machine 1 comprises spindle control means, operatively connected to the drives 50j, for the logic control of the motors 40qj of each group of spindles (12A, 12B)j.
[0037] Additionally, the spinning machine 1 comprises rail control means for the logic control of the ring rails 14 of the entire spinning machine 1.
[0038] Said drafting control means, spindle control means and rail control means are operatively linked to the logic unit 62 of the control group 60.
[0039] Innovatively, the spinning machine according to the present invention overcomes the drawbacks mentioned in reference to the prior art.
[0040] In effect, the Applicant has found that it is possible to maintain excellent synchronization between the electric motors, at least in part due to the low wear to which the individual belts are subjected.
[0041] Advantageously, moreover, providing for a plurality of belts, and therefore a plurality of groups of spindles, allows the number of motors engaged with the same belt to be reduced; this allows the power supply of all the motors of the group of spindles, i.e. the master motor and the slave motors in parallel with the master motor, to be maintained substantially at the same voltage.
[0042] At the same time, within the individual group of spindles, the master/slave system allows for the distribution of electrical power between the motors of the group, while the belt ensures the synchronization of the motors . [0043] It is apparent that one skilled in the art, in order to meet contingent needs, may make changes to the spinning machine described above; these changes are also contained within the scope of protection as defined by the following claims.

Claims

1. Ring spinning machine (1) for a spinning line, suitable for processing spools of roving (S) for the production of bobbins of yarn, having extension mainly along a longitudinal axis (X), between a head (20) and a tail (22), comprising:
- a first plurality of spindles (12A±j) aligned along a first bank (10A) of the spinning machine and a second plurality of spindles (12B±j) aligned along a second bank (10B) of the spinning machine, opposite the first, wherein said spindles ( 12A±j , 12B±j ) are assembled into groups of spindles ((12A, 12B)j) containing spindles (12Aij) of the first bank (20) and spindles (12B±j) of the second bank (22);
- a plurality of belts ( 30j ) , wherein each belt (30j) engages all the spindles of a predefined group of spindles ( ( 12A, 12B) j ) , said belts (30j) being mechanically independent of each other;
- a plurality of driving devices, each driving device being responsible for driving the belt (30j) of a predefined group of spindles ( ( 12A, 12B) j ) , wherein said driving device comprises a plurality of electric motors ( 40qj ) , operatively connected to the respective belt (30j) to drive it;
- wherein for each group of spindles ( ( 12A, 12B) j ) , said plurality of motors (40qj) comprises only one master motor with feedback and slave motors operatively connected in parallel to the master motor.
2. Spinning machine according to claim 1, comprising a control group (60) comprising a single logic unit (62) for controlling the entire spinning machine (1) .
3. Spinning machine according to claim 2, wherein the control group (60) comprises a control panel that is usable by an employee to control the operation of the entire spinning machine.
4. Spinning machine according to any one of the preceding claims, comprising
- a plurality of electric drives (50j), each drive (50j) being configured for the electrical operation of the plurality of motors (40qj) of a predefined group of spindles ( ( 12A, 12B) j ) .
5. Spinning machine according to claim 4, wherein said drives (50j) are electrically independent of each other.
6. Spinning machine according to claim 4 or 5, comprising spindle control means, operatively connected to the drives ( 50j ) , for the logic control of the plurality of motors ( 40qj ) of each group of spindles ( ( 12A, 12B) j ) .
7. Spinning machine according to claim 6, when dependent on claim 2, wherein the spindle control means are operatively connected to the logic unit (62) .
8. Spinning machine according to any one of the preceding claims, comprising a drafting device (4) for each bank (10A, 10B) and drafting control means, operatively connected to the drafting devices, for the logic control of the drafting devices.
9 . Spinning machine according to claim 8, when dependent on claim 2, wherein the drafting control means are operatively connected to the logic unit (62) .
10 . Spinning machine according to any one of the preceding claims, comprising a ring rail (14) for each bank (10A, 10B) and rail control means for the logic control of the ring rails (14) for the entire spinning machine ( 1 ) .
11 . Spinning machine according to claim 10, when dependent on claim 2, wherein the rail control means are operatively connected to the logic unit (62) .
EP20712686.3A 2019-02-25 2020-02-25 Ring spinning machine Active EP3931382B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000002661A IT201900002661A1 (en) 2019-02-25 2019-02-25 RING SPINNER
PCT/IB2020/051583 WO2020174380A1 (en) 2019-02-25 2020-02-25 Ring spinning machine

Publications (2)

Publication Number Publication Date
EP3931382A1 true EP3931382A1 (en) 2022-01-05
EP3931382B1 EP3931382B1 (en) 2023-03-01

Family

ID=66641271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20712686.3A Active EP3931382B1 (en) 2019-02-25 2020-02-25 Ring spinning machine

Country Status (5)

Country Link
EP (1) EP3931382B1 (en)
JP (1) JP7389811B2 (en)
CN (1) CN113423881B (en)
IT (1) IT201900002661A1 (en)
WO (1) WO2020174380A1 (en)

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FR1198101A (en) * 1958-04-25 1959-12-04 Alsacienne Constr Meca Improvements to spinning machines
JPS6385124A (en) * 1986-09-25 1988-04-15 Toyota Autom Loom Works Ltd Apparatus for driving and controlling spindle of spinning machine
DE3802200A1 (en) * 1988-01-26 1989-08-03 Zinser Textilmaschinen Gmbh MACHINE FOR MAKING TWISTED OR TWISTED THREADS
US4944144A (en) 1989-05-17 1990-07-31 Kabushiki Kaisha Ishikawa Seisakusho, Ltd. Spindle driving device of covering machine
IT1229408B (en) 1989-06-01 1991-08-08 Marzoli & C Spa APPARATUS FOR THE CONTROL OF THE SPINDLES, THROUGH TANGENTIAL CLUTCH, ON RING THREADERS, SUSCEPTABLE TO LOCK THE SPOOLS.
DE19501626C1 (en) 1995-01-20 1996-05-23 Zinser Textilmaschinen Gmbh Ring spinning machine with spindles driven by at least one tangential belt
DE19821251A1 (en) * 1998-05-12 1999-11-18 Csm Gmbh Drive system for a spinning machine with a number of spindle drive motors
DE102006037074A1 (en) * 2006-08-07 2008-02-21 Oerlikon Textile Gmbh & Co. Kg Procedure for the usage of synchronous motors for operating common working element e.g. ring spinning machine, comprises controlling frequency converter for the supply of the motors by an angular position detector at a rotor of the motors
DE102007013897A1 (en) * 2007-03-20 2008-09-25 Oerlikon Textile Gmbh & Co. Kg Drive device for the spindles of a ring spinning machine
DE102008053751A1 (en) * 2008-10-29 2010-05-06 Oerlikon Textile Gmbh & Co. Kg Spun yarn producing method, involves automatically performing machine adjustments at doubling machine and/or at flyer and/or at ring spinning machine after input of individual technological parameters into data archives
DE102015013618A1 (en) * 2015-10-20 2017-04-20 Saurer Germany Gmbh & Co. Kg Spinning or twisting machine with lifting spindle spindle
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CN208485992U (en) * 2018-07-10 2019-02-12 常州宏大智能装备产业发展研究院有限公司 Ring throstle spindle revolving speed online monitoring method device

Also Published As

Publication number Publication date
WO2020174380A1 (en) 2020-09-03
CN113423881B (en) 2023-05-16
IT201900002661A1 (en) 2020-08-25
JP2022521347A (en) 2022-04-06
CN113423881A (en) 2021-09-21
JP7389811B2 (en) 2023-11-30
EP3931382B1 (en) 2023-03-01

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