WO2020070567A1 - Spinning machine with belt tensioning system - Google Patents

Spinning machine with belt tensioning system

Info

Publication number
WO2020070567A1
WO2020070567A1 PCT/IB2019/057480 IB2019057480W WO2020070567A1 WO 2020070567 A1 WO2020070567 A1 WO 2020070567A1 IB 2019057480 W IB2019057480 W IB 2019057480W WO 2020070567 A1 WO2020070567 A1 WO 2020070567A1
Authority
WO
WIPO (PCT)
Prior art keywords
spindles
belt
infeed
motor
outfeed
Prior art date
Application number
PCT/IB2019/057480
Other languages
French (fr)
Inventor
Rosario Assenza
Original Assignee
MARZOLI MACHINES TEXTILE S.r.l.
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 S.r.l. filed Critical MARZOLI MACHINES TEXTILE S.r.l.
Priority to EP19769918.4A priority Critical patent/EP3861155B1/en
Priority to JP2021517574A priority patent/JP2022503885A/en
Priority to CN201980065757.XA priority patent/CN112805422B/en
Publication of WO2020070567A1 publication Critical patent/WO2020070567A1/en
Priority to JP2024002489A priority patent/JP2024029225A/en

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 of the present invention is a spinning machine of a spinning line, for the production of bobbins of yarn from bobbins of roving.
  • a spinning machine is able to process bobbins of roving to obtain bobbins of yarn, after having drawn and twisted the roving.
  • the spinning machine consists of a bridge that extends along a longitudinal axis on which are hung the bobbins of roving, a drawing device placed beneath the bridge, consisting of a set of cylinders having longitudinal extension, between which the roving passes to be drawn, and a bank carrying the spindles, in a row along the longitudinal axis, rotating around their vertical axis, on which the drawn and twisted yarn is wound .
  • the spindles are rotated around the vertical axis by a belt driving device, wherein the belt is driven by an electric motor and engages spindles of the two banks.
  • the object of the present invention is to obtain a spinning machine with a belt driving device for spindles that meets the aforesaid requirements and overcomes the aforementioned problem.
  • Figure 1 shows a diagram of a spinning machine comprising a belt driving device for spindles, according to an embodiment of the present invention
  • Figure 3 shows a support group for a belt driving device, according to an embodiment of the present invention .
  • a spinning machine of a spinning line adapted to obtain bobbins of yarn from bobbins of roving, comprising a bridge that extends along a longitudinal axis X, from which the bobbins of roving are hung, a drawing device placed beneath the bridge, composed of a set of coupled cylinders, continuous or in sections, having longitudinal extension, between which the roving passes to be drawn, and a bank bearing spindles, in a row along the longitudinal axis, rotating around their vertical axis, to which the drawn and twisted thread is wound.
  • the spinning frame 1 comprises two opposite banks 2, 4, along which are arranged respective groups of spindles 61-6n, 81-8n aligned longitudinally, between a head 10 of the spinning machine and a tail 12.
  • the spinning machine 1 further comprises at least one driving device for driving the spindles in rotation about their vertical axis.
  • Said driving device comprises a belt 14 arranged along a closed path, comprising a first section 16a along the first bank 2, a second section 16b along the second bank 4, a head section 16c that joins the first and the second section at the head 10 of the spinning machine, and a tail section 16d that joins the first and the second section at the tail 12 of the spinning machine.
  • the belt 14 is tangent to the spindles 61-6n of the first bank 2, and along the second section 16b of the path, the belt 14 is tangent to the spindles 81-8n of the second bank 4, so as to rotate each spindle about its respective vertical axis .
  • the driving device further comprises at least one electric motor for driving the belt 14; for example, according to a preferred embodiment, the driving device comprises a plurality of electric motors 181-18n, 201- 20n, preferably arranged within the path of the belt 14.
  • the belt 14 travels an engagement section 22 of the closed path; said engagement section 22 comprises a section under tension 24, which extends from the first section 16a or from the second section 16b towards the motor, a pulled section 26 wound on a drive pulley of the motor and a relaxed section 28, which goes from the motor towards the first section 16a or the second section 16b.
  • the driving device comprises diversion means, such as, for example, a pair of diverters 30 comprising, for example, an infeed diverting roller 32, which is an example of infeed diversion means, and an outfeed diverting roller 34, which is an example of outfeed diversion means.
  • diversion means such as, for example, a pair of diverters 30 comprising, for example, an infeed diverting roller 32, which is an example of infeed diversion means, and an outfeed diverting roller 34, which is an example of outfeed diversion means.
  • the infeed diverting roller 32 diverts the first section 16a of the path inwards, i.e., towards the section under tension 24, while the outfeed diverting roller 34 deflects the outfeed section 28, i.e., towards the first section 16a.
  • the section under tension 24 of the engagement section 22 is typically straight and extends along an infeed direction Y; the first section 16a, before being diverted inwards, i.e., upstream of the infeed diversion means, has an infeed section 16a' that is typically straight, along which the belt is in contact with at least some of said plurality of spindles; said infeed section 16a' extends along a main infeed direction Wi .
  • the relaxed section 28 of the engagement section 22 is typically straight and extends along an outfeed direction Z; the first section 16a, after being diverted outwards, i.e., downstream of the outfeed diversion means, has a typically straight outfeed section 16a' along which the belt is in contact with at least some of said plurality of spindles; said outfeed section 16a extends along a main outfeed direction Wu .
  • the infeed direction Y of the section under tension 24 forms an infeed angle A with the main infeed direction Wi of the infeed section 16a' of the path of the belt 14; similarly, the outfeed direction Z of the relaxed section 28 forms an outfeed angle B with the main outfeed direction Wu of the outfeed section 16a of the path of the belt 14.
  • the infeed angle A is greater than the outfeed angle B, in order to reduce the action of the tension of the belt on the infeed diversion means, for example on the first diverting roller 32.
  • this allows the action of the belt 14 on the infeed roller 32 to be reduced, which in the solutions of the prior art is overloaded, while at the same time increases the action of the tension of the belt on the outfeed roller 34, which in the solutions of the prior art is less stressed.
  • the driving device comprises at least one support group 40 suitable to support movably at least one motor 181-18n, 201-20n.
  • said driving device comprises a first motor 181-18n engaged with the spindles 61-6n of the first bank 6 and a second motor 201-20n engaged with the spindles 81-8n of the second bank 8.
  • the first motor and the second motor are side by side and are supported by said support group 40.
  • the support group 40 comprises a plate 42 that supports said motors and is rotatable around a plate axis 44; said plate axis is arranged longitudinally between the first motor and the second motor.
  • the plate may be locked in a predefined angular position.
  • said support group comprises means for guiding the rotation, comprising, for example, arched slots 46 made on or through the plate 42, in which the guide pins 48 slide.
  • the support group 40 comprises at least one bar to support the plate 42 rotatably; for example, the support group 40 comprises a pair of transverse support bars 50, 52, longitudinally spaced, which support the plate 42 rotatably.
  • the rotation of the plate 42 allows the belt 14 to be relaxed, especially at the engagement sections 22, in order to adjust the tension of the belt or to perform maintenance operations, in particular the replacement of a broken belt with a new endless belt, or to replace a drive pulley with another of different diameter .
  • the spinning machine according to the present invention overcomes the drawbacks mentioned with reference to the prior art and in particular allows one to reduce in a suitable way the tension of the belt on components that, in the solutions of the prior art, are more stressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Centrifugal Separators (AREA)

Abstract

A spinning machine (1) comprises a plurality of spindles (6 1-6 n; 8 1-8 n), longitudinally aligned, and a driving device for said spindles comprising an electric motor (181-18 n; 201-20n), a belt (14) engaged with the electric motor and tangentially pulling the spindles to rotate them, infeed diversion means (32) to divert the belt from the spindles towards the motor and outfeed diversion means (34) to divert the belt from the motor towards the spindles. The main infeed direction ( Wi) and the infeed direction (Y) form an infeed angle (A) and the main outfeed direction ( Wu) and the outfeed direction (Z) form an outfeed angle (B). The infeed angle (A) is greater than the outfeed angle (B) to limit the action of the tension of the belt on the infeed diversion means (32).

Description

"SPINNING MACHINE WITH BELT TENSIONING SYSTEM"
DESCRIPTION
[0001] The subject of the present invention is a spinning machine of a spinning line, for the production of bobbins of yarn from bobbins of roving.
[0002] As is well known, a spinning machine is able to process bobbins of roving to obtain bobbins of yarn, after having drawn and twisted the roving.
[0003] For this purpose, the spinning machine consists of a bridge that extends along a longitudinal axis on which are hung the bobbins of roving, a drawing device placed beneath the bridge, consisting of a set of cylinders having longitudinal extension, between which the roving passes to be drawn, and a bank carrying the spindles, in a row along the longitudinal axis, rotating around their vertical axis, on which the drawn and twisted yarn is wound .
[0004] To increase the productivity of the spinning machine, it usually has two opposite banks, each provided with a row of spindles.
[0005] The spindles are rotated around the vertical axis by a belt driving device, wherein the belt is driven by an electric motor and engages spindles of the two banks.
[0006] There are 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 and in the Publication EP-A1-0400260, all in the name of the Applicant. In particular, the document WO-A1-2009/040734 illustrates a solution with a different configuration of the spindle driving device, whereby the outfeed and infeed sections of the belt, as described below, are not in contact with the spindle. 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 for banks with a very high number of spindles in order to increase the productivity of the spinning line. Therefore the need is felt to have driving devices for spindles that are effective for driving a large number of spindles, and in particular that overcome the problem of the difference in tension that is generated in the belt between the branch under tension, pulled by the motor, and the relaxed branch.
[0009] The object of the present invention is to obtain a spinning machine with a belt driving device for spindles that meets the aforesaid requirements and overcomes the aforementioned problem.
[0010] This object is achieved by a spinning machine according to claim 1. The claims dependent thereon describe further advantageous embodiments.
[0011] The features and advantages of the spinning machine according to the present invention will be apparent from the description given below, provided by way of non- limiting example, in accordance with the accompanying figures, wherein:
Figure 1 shows a diagram of a spinning machine comprising a belt driving device for spindles, according to an embodiment of the present invention;
- Figure 2 shows a detail of the driving device in Figure
1 ; and
Figure 3 shows a support group for a belt driving device, according to an embodiment of the present invention .
[0012] With reference to the accompanying figures, at 1 is indicated collectively a spinning machine of a spinning line, adapted to obtain bobbins of yarn from bobbins of roving, comprising a bridge that extends along a longitudinal axis X, from which the bobbins of roving are hung, a drawing device placed beneath the bridge, composed of a set of coupled cylinders, continuous or in sections, having longitudinal extension, between which the roving passes to be drawn, and a bank bearing spindles, in a row along the longitudinal axis, rotating around their vertical axis, to which the drawn and twisted thread is wound.
[0013] Preferably, the spinning frame 1 comprises two opposite banks 2, 4, along which are arranged respective groups of spindles 61-6n, 81-8n aligned longitudinally, between a head 10 of the spinning machine and a tail 12.
[0014] The spinning machine 1 further comprises at least one driving device for driving the spindles in rotation about their vertical axis.
[0015] Said driving device comprises a belt 14 arranged along a closed path, comprising a first section 16a along the first bank 2, a second section 16b along the second bank 4, a head section 16c that joins the first and the second section at the head 10 of the spinning machine, and a tail section 16d that joins the first and the second section at the tail 12 of the spinning machine.
[0016] Along the first section 16a of the path, the belt 14 is tangent to the spindles 61-6n of the first bank 2, and along the second section 16b of the path, the belt 14 is tangent to the spindles 81-8n of the second bank 4, so as to rotate each spindle about its respective vertical axis .
[0017] The driving device further comprises at least one electric motor for driving the belt 14; for example, according to a preferred embodiment, the driving device comprises a plurality of electric motors 181-18n, 201- 20n, preferably arranged within the path of the belt 14.
[0018] To engage with each motor 181-18n, 201-20n, the belt 14 travels an engagement section 22 of the closed path; said engagement section 22 comprises a section under tension 24, which extends from the first section 16a or from the second section 16b towards the motor, a pulled section 26 wound on a drive pulley of the motor and a relaxed section 28, which goes from the motor towards the first section 16a or the second section 16b.
[0019] For example, when a clockwise direction of rotation for the motor is defined, the section under tension 24 is pulled by the motor.
[0020] In order to divert the belt 14 from the engagement section 22 to the first section 16a or to the second section 16b of the closed path, the driving device comprises diversion means, such as, for example, a pair of diverters 30 comprising, for example, an infeed diverting roller 32, which is an example of infeed diversion means, and an outfeed diverting roller 34, which is an example of outfeed diversion means.
[0021] For example, the infeed diverting roller 32 diverts the first section 16a of the path inwards, i.e., towards the section under tension 24, while the outfeed diverting roller 34 deflects the outfeed section 28, i.e., towards the first section 16a. [0022] The section under tension 24 of the engagement section 22 is typically straight and extends along an infeed direction Y; the first section 16a, before being diverted inwards, i.e., upstream of the infeed diversion means, has an infeed section 16a' that is typically straight, along which the belt is in contact with at least some of said plurality of spindles; said infeed section 16a' extends along a main infeed direction Wi .
[0023] Similarly, the relaxed section 28 of the engagement section 22 is typically straight and extends along an outfeed direction Z; the first section 16a, after being diverted outwards, i.e., downstream of the outfeed diversion means, has a typically straight outfeed section 16a' along which the belt is in contact with at least some of said plurality of spindles; said outfeed section 16a extends along a main outfeed direction Wu .
[0024] The infeed direction Y of the section under tension 24 forms an infeed angle A with the main infeed direction Wi of the infeed section 16a' of the path of the belt 14; similarly, the outfeed direction Z of the relaxed section 28 forms an outfeed angle B with the main outfeed direction Wu of the outfeed section 16a of the path of the belt 14.
[0025] In the solution illustrated, wherein the rotation of the motor is clockwise (the tension of the belt in the section under tension 24 is greater than the tension of the belt in the relaxed section 28), the infeed angle A is greater than the outfeed angle B, in order to reduce the action of the tension of the belt on the infeed diversion means, for example on the first diverting roller 32.
[0026] Advantageously, this allows the action of the belt 14 on the infeed roller 32 to be reduced, which in the solutions of the prior art is overloaded, while at the same time increases the action of the tension of the belt on the outfeed roller 34, which in the solutions of the prior art is less stressed.
[0027] According to a preferred embodiment, the driving device comprises at least one support group 40 suitable to support movably at least one motor 181-18n, 201-20n.
[0028] For example, said driving device comprises a first motor 181-18n engaged with the spindles 61-6n of the first bank 6 and a second motor 201-20n engaged with the spindles 81-8n of the second bank 8.
[0029] The first motor and the second motor are side by side and are supported by said support group 40.
[0030] Preferably, the support group 40 comprises a plate 42 that supports said motors and is rotatable around a plate axis 44; said plate axis is arranged longitudinally between the first motor and the second motor. The plate may be locked in a predefined angular position.
[0031] Preferably, said support group comprises means for guiding the rotation, comprising, for example, arched slots 46 made on or through the plate 42, in which the guide pins 48 slide.
[0032] For example, the support group 40 comprises at least one bar to support the plate 42 rotatably; for example, the support group 40 comprises a pair of transverse support bars 50, 52, longitudinally spaced, which support the plate 42 rotatably.
[0033] Advantageously, the rotation of the plate 42 allows the belt 14 to be relaxed, especially at the engagement sections 22, in order to adjust the tension of the belt or to perform maintenance operations, in particular the replacement of a broken belt with a new endless belt, or to replace a drive pulley with another of different diameter .
[0034] Innovatively, the spinning machine according to the present invention overcomes the drawbacks mentioned with reference to the prior art and in particular allows one to reduce in a suitable way the tension of the belt on components that, in the solutions of the prior art, are more stressed.
[0035] It is clear that one skilled in the art, in order to meet contingent needs, may make changes to the spinning machine described above, all contained within the scope of protection defined by the following claims.

Claims

1. A spinning machine (1) of a spinning line, for the formation of bobbins of yarn from bobbins of roving, comprising at least one bank (2,4) equipped with a plurality of spindles ( 61-6n; 81-8n) , longitudinally aligned, and at least one driving device for said spindles comprising at least one electric motor (181— 18n; 201-20n) , a belt (14) engaged with said electric motor and tangentially pulling said spindles to rotate them, infeed diversion means (32) to divert the belt from the spindles towards the motor, and outfeed diversion means (34) to divert the belt from the motor towards the spindles, wherein, with reference to the feed direction of the belt ( 14 ) :
- upstream of the infeed diversion means, the belt
(14) travels, in contact with at least some of said plurality of spindles, an infeed section (16af) along a main infeed direction (Wi);
- between the infeed diversion means and the motor, the belt (14) travels a section under tension (24) along an infeed direction (Y) ;
downstream of the outfeed diversion means, the belt (14) travels an outfeed section (16ar ' ) , in contact with at least some of said plurality of spindles, along a main outfeed direction (Wu) ; - between the motor and the outfeed diversion means, the belt (14) travels a relaxed section (28) along an outfeed direction (Z);
the main infeed direction (Wi) and the infeed direction (Y) form an infeed angle (A) and the main outfeed direction (Wu) and the outfeed direction (Z) form an outfeed angle (B) ;
- the infeed angle (A) is greater than the outfeed angle (B) to limit the action of the belt tension on the infeed diversion means.
2. A spinning machine according to claim 1, wherein said at least one driving device comprises a support group (40) suitable to support at least one motor in a movable way .
3. A spinning machine according to claim 1 or 2, comprising two opposite banks (2,4), wherein the belt (14) engages the spindles (61-6n) of the first bank (2) and the spindles (81-8n) of the second bank (4) .
4. A spinning machine according to claim 3 when dependent on claim 2, wherein said at least one driving device comprises a first motor (181-18n) engaged with spindles (61-6n) of the first bank (2) and a second motor (201— 20n) engaged with spindles (81-8n) of the second bank (4), wherein the first motor and the second motor are flanked and supported by said support group (40) .
5. A spinning machine according to claim 4, wherein the support group (40) comprises a plate (42) that supports said motors, rotatable around a plate axis (44), placed longitudinally between the first motor and the second motor, and lockable in a predefined angular position.
6. A spinning machine according to claim 5, wherein the support group comprises means for guiding the rotation.
7. A spinning machine according to claim 6, wherein said means for guiding the rotation comprise arched slots (46) made on or through the plate (42), in which guide pins
(48) slide.
PCT/IB2019/057480 2018-10-02 2019-09-05 Spinning machine with belt tensioning system WO2020070567A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19769918.4A EP3861155B1 (en) 2018-10-02 2019-09-05 Spinning machine with belt tensioning system
JP2021517574A JP2022503885A (en) 2018-10-02 2019-09-05 Spinning machine with belt tensioning system
CN201980065757.XA CN112805422B (en) 2018-10-02 2019-09-05 Spinning machine with belt tensioning system
JP2024002489A JP2024029225A (en) 2018-10-02 2024-01-11 Spinning machine with belt tensioning system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000009103 2018-10-02
IT102018000009103A IT201800009103A1 (en) 2018-10-02 2018-10-02 SPINNER WITH BELT TENSIONING SYSTEM

Publications (1)

Publication Number Publication Date
WO2020070567A1 true WO2020070567A1 (en) 2020-04-09

Family

ID=64744871

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/057480 WO2020070567A1 (en) 2018-10-02 2019-09-05 Spinning machine with belt tensioning system

Country Status (5)

Country Link
EP (1) EP3861155B1 (en)
JP (2) JP2022503885A (en)
CN (1) CN112805422B (en)
IT (1) IT201800009103A1 (en)
WO (1) WO2020070567A1 (en)

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WO2007039260A1 (en) * 2005-10-05 2007-04-12 Oerlikon Textile Gmbh & Co. Kg Ring spinning machine comprising spindles driven by means of a tangential belt
WO2009040734A1 (en) * 2007-09-28 2009-04-02 Marzoli S.P.A. Spinning frame with a tangential belt driving system for spindles

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WO2007039260A1 (en) * 2005-10-05 2007-04-12 Oerlikon Textile Gmbh & Co. Kg Ring spinning machine comprising spindles driven by means of a tangential belt
WO2009040734A1 (en) * 2007-09-28 2009-04-02 Marzoli S.P.A. Spinning frame with a tangential belt driving system for spindles

Also Published As

Publication number Publication date
EP3861155A1 (en) 2021-08-11
CN112805422B (en) 2023-04-28
JP2024029225A (en) 2024-03-05
EP3861155B1 (en) 2022-06-15
IT201800009103A1 (en) 2020-04-02
JP2022503885A (en) 2022-01-12
CN112805422A (en) 2021-05-14

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