EP1473388A2 - Fibre condensing device for spinning machines - Google Patents
Fibre condensing device for spinning machines Download PDFInfo
- Publication number
- EP1473388A2 EP1473388A2 EP04380069A EP04380069A EP1473388A2 EP 1473388 A2 EP1473388 A2 EP 1473388A2 EP 04380069 A EP04380069 A EP 04380069A EP 04380069 A EP04380069 A EP 04380069A EP 1473388 A2 EP1473388 A2 EP 1473388A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- condensing
- band
- fibres
- drive cylinder
- perforated band
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
-
- 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
- D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
Definitions
- the present invention relates to a device for condensing the fibres in the sliver in spinning machines, having significant characteristics of novelty and inventive step.
- the device to which the present invention relates is intended to condense the fibre sliver that issues from the draw-frame in spinning machines, significantly reducing the effect of fibres protruding from the sliver, which create the effect known as "hairs" due to faults in the condensing of the sliver.
- the present invention provides a system for condensing after drawing and before twisting, by means of an aerodynamic arrangement, of which the degree of condensing depends on the quantity and diameter of the holes in a band or "bag” transporting the bundle of fibres, of which the perforated bag is subjected to suction through one or more grooves, in such a way that, after being drawn and before being twisted, the fibres are placed above the perforated bag which travels at a speed somewhat higher than said first line cylinder or forming cylinder, performs condensing drawing with slight tension of the fibres and helps to orient them longitudinally.
- One or more grooves that are straight or inclined in the direction of the fibres are connected to a suction source creating a transverse force that condenses the fibres deposited above the perforated bag.
- the width of the fibres is reduced by means of this arrangement, and this reduces and almost eliminates the so-called spinning triangle, and orients and integrates the fibres uniformly in the cross section of the yarn, thus improving the arrangement of the fibres, reducing the quantity of unintegrated fibres, reducing hairiness or fluffiness, reducing variation in the diameter of the yarn through less loss of fibres through suction, and reducing points that are thin, thick, etc. Hence, a cleaner, more regular and better quality yarn may be obtained through the application of the present invention.
- the yarn will be twisted, allowing a yarn with very advantageous properties for the spinning process and for the subsequent processes of dyeing, weaving, etc. to be obtained.
- Fig. 1 is a diagrammatic view of the arrangement of rollers of said first, second and third lines in a conventional drawing system.
- Fig. 2 is a diagrammatic view similar to Fig. 1 of a condensing device according to the present invention.
- Fig. 3 is a diagrammatic cross section of the device according to the present invention.
- Fig. 4 is a cross section of the actual device according to the invention.
- Fig. 5 is a perspective view of the actual device according to the invention, from the driving side.
- the entering fibre bundle 1 is received by a first roller 2 rotating at low speed, then passes to the second rollers 3 rotating at a slightly higher speed than the roller 2 and performing with respect thereto what is known as preliminary drafting, and then passes to a third roller 4 revolving at a much higher speed of approximately 12 to 80 times the speed of the roller 2 performing the main drawing.
- the sliver 1 has been reducing to a much narrower, sufficiently parallel sliver 5.
- said spinning triangle 6 is formed, of which the vertex has been produced by the twisting of the yarn 8.
- the present invention provides for the arrangement, after the conventional roller 4, of a condensing device which is formed as shown diagrammatically in Fig. 2 by means of a tubular element 20 connected to a source of vacuum, and has transverse grooves that are inclined or straight 7, single or multiple, and are covered by a band 9 provided with micro-orifices, all of which is shown in more detail in Fig. 3 et seq., so the suction which is produced in the tubular element 20 and transmitted by the single or multiple grooves 7 contributes to condensing of the sliver, making it parallel and preventing the protrusion of transverse fibres, so the spinning triangle, from the point 10 from which the yarn is subjected to twisting 11, is reduced to a minimum value.
- the tubular element 20 has a concave side adapted externally to a part of the drive cylinder.
- the tubular element 20 is of a specific, substantially trapezoidal form, having in its upper gently curved side the grooves 7 over which there runs the perforated band, also called perforated bag 9, which is tensioned and guided by a longitudinal bar 12 provided with small longitudinal recesses, as can be seen in said Fig. 3, for housing the band or bag 9, which is actuated by the cylinder 13. While a roller covered with synthetic rubber 14 rests on the perforated band or bag 9 through the pressure applied by the spring 15.
- the cylinder 13 has a toothed pinion 16 which meshes with the transmission wheel 17 of a transmission shaft 18.
- Said shaft 18 is connected to the following section of the spinning machine, running along the whole length thereof.
- a servomotor will actuate the shaft 18, allowing its speed to be changed to achieve optimum condensing drawing.
- the pinion 16 and the wheel 17 are enclosed inside a surrounding case or housing 19 to prevent the entry of dirt, and guarantee lubrication.
- these gears can be replaced by toothed wheels at 45o to perpendicular shafts when there is not enough space to install the shaft 18 beneath the cylinder 13 and it must be placed behind the drawing entry cylinder.
- the driving shaft takes its power directly from the drive shaft of the unit, which helps avoid mechanical problems of breakage of the shaft used in the draw-frames for the normal driving of the rollers, if the device according to the invention is to be incorporated into spinning machines that are already in operation.
- a further important advantage of the device according to the present invention is the low sensitivity of the precise diameter of the levelling rollers, since precision of levelling is not required, given the general arrangement of the device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
- The present invention relates to a device for condensing the fibres in the sliver in spinning machines, having significant characteristics of novelty and inventive step.
- The device to which the present invention relates is intended to condense the fibre sliver that issues from the draw-frame in spinning machines, significantly reducing the effect of fibres protruding from the sliver, which create the effect known as "hairs" due to faults in the condensing of the sliver.
- By means of the device according to the present invention, improved condensing of the fibres that make up a sliver is possible, and this significantly increases the quality of the yarn produced.
- To achieve more regular and better quality yarns, the present invention provides a system for condensing after drawing and before twisting, by means of an aerodynamic arrangement, of which the degree of condensing depends on the quantity and diameter of the holes in a band or "bag" transporting the bundle of fibres, of which the perforated bag is subjected to suction through one or more grooves, in such a way that, after being drawn and before being twisted, the fibres are placed above the perforated bag which travels at a speed somewhat higher than said first line cylinder or forming cylinder, performs condensing drawing with slight tension of the fibres and helps to orient them longitudinally. One or more grooves that are straight or inclined in the direction of the fibres are connected to a suction source creating a transverse force that condenses the fibres deposited above the perforated bag.
- The width of the fibres is reduced by means of this arrangement, and this reduces and almost eliminates the so-called spinning triangle, and orients and integrates the fibres uniformly in the cross section of the yarn, thus improving the arrangement of the fibres, reducing the quantity of unintegrated fibres, reducing hairiness or fluffiness, reducing variation in the diameter of the yarn through less loss of fibres through suction, and reducing points that are thin, thick, etc. Hence, a cleaner, more regular and better quality yarn may be obtained through the application of the present invention.
- Following the condensing device of the present invention, the yarn will be twisted, allowing a yarn with very advantageous properties for the spinning process and for the subsequent processes of dyeing, weaving, etc. to be obtained.
- As an explanatory and non-limiting example, the accompanying drawings will assist understanding of the present invention.
- Fig. 1 is a diagrammatic view of the arrangement of rollers of said first, second and third lines in a conventional drawing system.
- Fig. 2 is a diagrammatic view similar to Fig. 1 of a condensing device according to the present invention.
- Fig. 3 is a diagrammatic cross section of the device according to the present invention.
- Fig. 4 is a cross section of the actual device according to the invention.
- Fig. 5 is a perspective view of the actual device according to the invention, from the driving side.
- As illustrated in the figures, in a conventional draw-frame the entering
fibre bundle 1 is received by afirst roller 2 rotating at low speed, then passes to thesecond rollers 3 rotating at a slightly higher speed than theroller 2 and performing with respect thereto what is known as preliminary drafting, and then passes to athird roller 4 revolving at a much higher speed of approximately 12 to 80 times the speed of theroller 2 performing the main drawing. Thesliver 1 has been reducing to a much narrower, sufficientlyparallel sliver 5. On leaving the nip of theroller 4 said spinningtriangle 6 is formed, of which the vertex has been produced by the twisting of the yarn 8. - The present invention provides for the arrangement, after the
conventional roller 4, of a condensing device which is formed as shown diagrammatically in Fig. 2 by means of atubular element 20 connected to a source of vacuum, and has transverse grooves that are inclined or straight 7, single or multiple, and are covered by aband 9 provided with micro-orifices, all of which is shown in more detail in Fig. 3 et seq., so the suction which is produced in thetubular element 20 and transmitted by the single ormultiple grooves 7 contributes to condensing of the sliver, making it parallel and preventing the protrusion of transverse fibres, so the spinning triangle, from thepoint 10 from which the yarn is subjected to twisting 11, is reduced to a minimum value. Thetubular element 20 has a concave side adapted externally to a part of the drive cylinder. - As shown in Fig. 3, the
tubular element 20 is of a specific, substantially trapezoidal form, having in its upper gently curved side thegrooves 7 over which there runs the perforated band, also called perforatedbag 9, which is tensioned and guided by alongitudinal bar 12 provided with small longitudinal recesses, as can be seen in said Fig. 3, for housing the band orbag 9, which is actuated by thecylinder 13. While a roller covered withsynthetic rubber 14 rests on the perforated band orbag 9 through the pressure applied by thespring 15. - The
cylinder 13 has atoothed pinion 16 which meshes with thetransmission wheel 17 of atransmission shaft 18. Saidshaft 18 is connected to the following section of the spinning machine, running along the whole length thereof. A servomotor will actuate theshaft 18, allowing its speed to be changed to achieve optimum condensing drawing. Thepinion 16 and thewheel 17 are enclosed inside a surrounding case orhousing 19 to prevent the entry of dirt, and guarantee lubrication. In some applications these gears can be replaced by toothed wheels at 45º to perpendicular shafts when there is not enough space to install theshaft 18 beneath thecylinder 13 and it must be placed behind the drawing entry cylinder. - As will be seen, through the arrangement of elements described, effective condensing of the fibres in the sliver in spinning machines can be achieved, producing the substantial advantages indicated at the beginning.
- In particular, in the device according to the invention, the driving shaft takes its power directly from the drive shaft of the unit, which helps avoid mechanical problems of breakage of the shaft used in the draw-frames for the normal driving of the rollers, if the device according to the invention is to be incorporated into spinning machines that are already in operation.
- A further important advantage of the device according to the present invention is the low sensitivity of the precise diameter of the levelling rollers, since precision of levelling is not required, given the general arrangement of the device.
- Similarly, as it has an independent actuating shaft, it is possible to adjust the condensing drawing to the most appropriate values.
Claims (4)
- Device for condensing fibres in spinning machines that comprises, at the outlet of the final pair of rollers of a spinning machine draw-frame, a tubular element which is parallel to the axis of said rollers, is connected to a source of vacuum and is provided with multiple transverse grooves, on which runs a band provided with small perforations and in turn receiving, through its face remote from said tube, the sliver leaving the draw-frame, and performing the transverse condensing of said sliver as it adapts to the empty grooves through the perforated band, the tubular element having a gently curved structure in the adaptation region of the perforated band, characterised in that the device comprises a drive cylinder inside the perforated band, which receives a tangential upper roller, which has resilient characteristics and of which the drive cylinder is actuated by a longitudinal shaft common to the various drawing units of the machine.
- Device for condensing fibres in spinning machines, according to claim 1, characterised in that the perforated band is mounted in contact with the part of the tubular suction element that has the grooves, with a peripheral region of the drive cylinder, and with a bar for tensioning and guiding said band.
- Device for condensing fibres in spinning machines according to claim 2, characterised in that the bar for tensioning and guiding the perforated band has successive staggered regions to receive the successive belts of the drawing devices of the spinning machine, in which the device is incorporated.
- Device for the condensing of fibres in spinning machines according to claim 1, characterised in that the tubular element has a concave side adapted externally to a part of the drive cylinder.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200301064U ES1054642Y (en) | 2003-04-30 | 2003-04-30 | "DEVICE FOR THE CONDENSATION OF FIBERS IN SPINDING MACHINES" |
ES200301064U | 2003-04-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1473388A2 true EP1473388A2 (en) | 2004-11-03 |
EP1473388A3 EP1473388A3 (en) | 2005-08-31 |
EP1473388B1 EP1473388B1 (en) | 2015-03-18 |
Family
ID=27838475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04380069.7A Expired - Lifetime EP1473388B1 (en) | 2003-04-30 | 2004-03-30 | Fibre condensing device for spinning machines |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1473388B1 (en) |
ES (1) | ES1054642Y (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1975288A3 (en) * | 2007-03-31 | 2009-12-30 | Oerlikon Textile GmbH & Co. KG | Spinning machine |
ES2372096A1 (en) * | 2007-08-23 | 2012-01-16 | Maschinenfabrik Rieter Ag | Stretch train, structure for stretched train and support sheath for a lower cylinder. (Machine-translation by Google Translate, not legally binding) |
CN109735972A (en) * | 2019-03-13 | 2019-05-10 | 无锡市和展机电技术有限公司 | Alternation drawing-off binary channels spinning apparatus and the spinning method for genuine for becoming branch no-load voltage ratio change twisted yarn |
EP4215654A1 (en) | 2022-01-25 | 2023-07-26 | Kabushiki Kaisha Toyota Jidoshokki | Fiber bundle condensing device for spinning machine |
EP4215653A1 (en) | 2022-01-25 | 2023-07-26 | Kabushiki Kaisha Toyota Jidoshokki | Fiber bundle condensing device for spinning machine |
EP4279645A1 (en) | 2022-05-17 | 2023-11-22 | Kabushiki Kaisha Toyota Jidoshokki | Fiber bundle condensing device of spinning machine |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10343316A1 (en) * | 2003-09-10 | 2005-04-14 | Wilhelm Stahlecker Gmbh | Fiber strand focussing apparatus of spinning machine, has tension roller that arranged at down stream side of deflection roller, enables deflection roller to deflect transport belt at specific angle |
ES2215488B1 (en) * | 2004-03-11 | 2005-08-01 | Pinter, S.A. | IMPROVEMENTS IN THE STYLING TRAINS OF SPINNING MACHINES. |
ES2215487B1 (en) * | 2004-03-11 | 2005-08-01 | Pinter, S.A. | DRIVING DEVICE FOR FIBER CONDENSATION MECHANISMS IN STYLING TRAINING OF SPINDING MACHINES. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07145520A (en) * | 1993-11-20 | 1995-06-06 | Nippon Boseki Yohin Kenkyusho:Kk | Controller for driving of drawing frame |
DE10104803A1 (en) * | 2001-01-29 | 2002-08-01 | Stahlecker Fritz | Condensing zones for drawn slivers, at the drawing units for a number of spinning stations, are formed by separate housings at a common suction tube along the line of the spinning machine |
EP1300495A1 (en) * | 2001-10-04 | 2003-04-09 | Kabushiki Kaisha Toyota Jidoshokki | Fiber condensing device for spinning machine |
DE10227463C1 (en) * | 2002-06-20 | 2003-10-16 | Zinser Textilmaschinen Gmbh | Ring spinning machine with stretching mechanism and compression system, has pressure unit extended to mount drive roller of compression system |
-
2003
- 2003-04-30 ES ES200301064U patent/ES1054642Y/en not_active Expired - Fee Related
-
2004
- 2004-03-30 EP EP04380069.7A patent/EP1473388B1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07145520A (en) * | 1993-11-20 | 1995-06-06 | Nippon Boseki Yohin Kenkyusho:Kk | Controller for driving of drawing frame |
DE10104803A1 (en) * | 2001-01-29 | 2002-08-01 | Stahlecker Fritz | Condensing zones for drawn slivers, at the drawing units for a number of spinning stations, are formed by separate housings at a common suction tube along the line of the spinning machine |
EP1300495A1 (en) * | 2001-10-04 | 2003-04-09 | Kabushiki Kaisha Toyota Jidoshokki | Fiber condensing device for spinning machine |
DE10227463C1 (en) * | 2002-06-20 | 2003-10-16 | Zinser Textilmaschinen Gmbh | Ring spinning machine with stretching mechanism and compression system, has pressure unit extended to mount drive roller of compression system |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1975288A3 (en) * | 2007-03-31 | 2009-12-30 | Oerlikon Textile GmbH & Co. KG | Spinning machine |
ES2372096A1 (en) * | 2007-08-23 | 2012-01-16 | Maschinenfabrik Rieter Ag | Stretch train, structure for stretched train and support sheath for a lower cylinder. (Machine-translation by Google Translate, not legally binding) |
CN109735972A (en) * | 2019-03-13 | 2019-05-10 | 无锡市和展机电技术有限公司 | Alternation drawing-off binary channels spinning apparatus and the spinning method for genuine for becoming branch no-load voltage ratio change twisted yarn |
CN109735972B (en) * | 2019-03-13 | 2023-09-12 | 无锡市和展机电技术有限公司 | Alternating draft double-channel spinning device and spinning method of variable-count variable-ratio variable-twist yarn |
EP4215654A1 (en) | 2022-01-25 | 2023-07-26 | Kabushiki Kaisha Toyota Jidoshokki | Fiber bundle condensing device for spinning machine |
EP4215653A1 (en) | 2022-01-25 | 2023-07-26 | Kabushiki Kaisha Toyota Jidoshokki | Fiber bundle condensing device for spinning machine |
EP4279645A1 (en) | 2022-05-17 | 2023-11-22 | Kabushiki Kaisha Toyota Jidoshokki | Fiber bundle condensing device of spinning machine |
Also Published As
Publication number | Publication date |
---|---|
ES1054642U (en) | 2003-08-16 |
ES1054642Y (en) | 2003-12-01 |
EP1473388A3 (en) | 2005-08-31 |
EP1473388B1 (en) | 2015-03-18 |
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