EP2305871A1 - Procédé et dispositif pour réduire le bruit généré durant le fonctionnement d'une aiguilleteuse pour la production de tissus non tissés - Google Patents

Procédé et dispositif pour réduire le bruit généré durant le fonctionnement d'une aiguilleteuse pour la production de tissus non tissés Download PDF

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Publication number
EP2305871A1
EP2305871A1 EP10177600A EP10177600A EP2305871A1 EP 2305871 A1 EP2305871 A1 EP 2305871A1 EP 10177600 A EP10177600 A EP 10177600A EP 10177600 A EP10177600 A EP 10177600A EP 2305871 A1 EP2305871 A1 EP 2305871A1
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EP
European Patent Office
Prior art keywords
needle board
cover
enclosed space
stripping plate
needle
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
EP10177600A
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German (de)
English (en)
Other versions
EP2305871B1 (fr
Inventor
Pavel Sidlof
Petr Skop
Norbert Pomp
Martin Pustka
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.)
Vuts AS
Original Assignee
Vuts AS
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Publication date
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Publication of EP2305871A1 publication Critical patent/EP2305871A1/fr
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Publication of EP2305871B1 publication Critical patent/EP2305871B1/fr
Not-in-force legal-status Critical Current
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles

Definitions

  • the invention relates to the method of operation of the needling device for production of nonwoven fabrics, whose needle board moves in en enclosed space in periodic straight-lined reversible motion of a high frequency with respect to the surface of the processed web and to the surface of the stripping plate.
  • the invention also relates to the device for reducing the low frequency noise being generated at operation of needling device for production of nonwoven fabrics, comprising at least one needle board, stripping plate and bed plate, while the needle board is coupled with the driving rods putting the same into a straight-lined reversible motion in direction to the processed fabric and to thestripping plate arranged between the needle board and the web processed, and further comprising a cover delimiting the space in which the needle board is moving.
  • the topic of air streaming in the space neighbouring with the needle board is published due to removing the separated fibres and cleaning of mouth of needle holes and their vicinity in the stripping plate, e.g. in EU 1384804B1 .
  • Solution according to the CZ 1998-1523 A3 utilises the compressed air streaming through the nozzles inclined with respect to the direction of passage of the web for support of its motion. Due to the fact that the device here does not utilise the lower needle boards and the needles of the upper needle board are provided with reverse-barbs, the compressed air streaming through the passage holes of the stripping plate at motion of the needle board from the processed web presses the web to the needling pad.
  • the background art probably due to the above mentioned reasons, does not comprise the means, which would solve damping of noise generated from streaming of air, whose source is the periodically moving needle board of the needling machine.
  • the goal of the invention is to maximally reduce propagation of this noise into a vicinity and to improve the working environment in textile operations of the needling machines.
  • the goal of the invention has been achieved by a method for operation of the device for production of nonwoven fabrics, whose principle consists in that, at the reverse motion of the needle board in an enclosed space with atmospheric pressure the air from the decreasing section of an enclosed space under or above the needle board in direction of its motion is expelled into the increasing section of an enclosed space on opposite side of the needle board, at the same time this alternately expelled air streams in the mentioned enclosed space, by which the low-frequency noise in vicinity of the machine is limited.
  • the goal of the invention has also been achieved by the device for reduction of low-frequency noise generated at operation of the needling device, whose principle consists in that the cover of the machine creates an enclosed space with atmospheric pressure.
  • the air expelled from the decreasing space above or under the needle board at the needling device working at high frequency of reversible motion of the needle board thus does not stream into surroundings of the machine by which spreading of pressure waves into surroundings is prevented. Through this the outside noise of the machine is reduced considerably and possible vibration of structures being in vicinity of the machine is prevented.
  • a sealing gap is created between the cover and the stripping plate.
  • a small gap does not cause outflow of a larger quantity of air from space of the cover, at the same time it may have a positive influence on removal of impurities from the space above the stripping plate.
  • a gap is created, which acts as a further sealing slot preventing an unwilling larger outflow of air from the space inside the cover.
  • the cover is tightly connected with the stripping plate. This is favourable from the point of view of further decreasing the outflow of compressed air into surroundings of the machine, thus also the noise in surroundings of the machine.
  • the cover is tightly connected to the driving box for drive of the needle board. Through this a total enclosed space of the cover is increased, which reduces fluctuation of pressure inside it, at the same time the pressure waves also do not spread in surroundings of the machine.
  • the device according to the invention remedies necessity to surround the machine with a large layer of damping material being disadvantageous both from the point of view of price as well as necessary space.
  • Exemplary embodiments of the device according to the invention are schematically represented in the drawings by means of longitudinal sections run through axis of the fed processed material, where the Fig. 1 illustrates the basic embodiment, the Fig. 2 embodiment with the bed plate, whose supporting surface is not larger than surface of the stripping plate, the Fig. 3 embodiment with the sealed connection of bottom section of the cover with stripping plate, the Fig. 4 embodiment with shaped cover, the Fig. 5 embodiment with tilting side parts of the cover, the Fig. 6 embodiment with cover attached to the box of the drive, the Fig. 7 embodiment at machine equipped with two needle boards, and the Fig. 8 alternative solution of sealing of the cover with respect to the processed material.
  • the needling machine serves to produce nonwoven fabrics from a semiproduct, which is a band of nonwoven and relatively little compact fibrous web.
  • a semiproduct which is a band of nonwoven and relatively little compact fibrous web.
  • Upon needling into the web there penetrates a system of large number of needles provided with reverse barbs and fastened in the needle board, which moves substantially in straight-lined reversible manner in direction perpendicular to surface of band of the web with a high frequency, for example 1400 punctures per minute.
  • a high frequency for example 1400 punctures per minute.
  • the needles mutually interlace the fibres of the web, hence the web is strengthened and a nonwoven fabric created.
  • the Fig. 1 to 8 in various exemplary arrangements represents the working part of needling device according to the invention.
  • the needling device 2 On entry of the processed web 1 into the needling device 2 there is arranged the feeding mechanism 21 , which feeds the web 1 to the bed plate 22 in a fixed manner connected with frame of the machine.
  • the needling device 2 further comprises the needle board 23 , in which perpendicularly to its surface a plurality of needles 231 is attached.
  • the needle board 23 with its upper surface is attached to the driving rods 232 , which are put into a straight-lined reversible motion by a not represented driving device arranged in the driving box 20 .
  • Number of driving rods 232 depends on width of the processed web 1 , to which corresponds the longer dimension of the needle board 23 .
  • the stripping plate 24 is attached between the bed plate 22 and the needle board 23 to the frame of the machine in a fixed manner.
  • the bed plate 22 is provided with through holes 221 and the stripping plate 24 is provided with holes 241 .
  • Each one above another situated couple of holes 221 , 241 is arranged axially with respect to it corresponding needle 231 .
  • the draw off mechanism 25 of produced nonwoven fabric 11 On exit from the needling device 2 is arranged the draw off mechanism 25 of produced nonwoven fabric 11 .
  • the needling device 2 further comprises the cover 3 in a fixed manner connected with frame of the machine, in whose upper section are created the sleeves 31 for passage of driving rods 232 . Between surface of the driving rods 232 and inner surface of the sleeves 31 the sealing gaps 311 are provided. Circumferential parts of the cover 3 encircle the needle board 23 and the stripping plate 24 . Between the outer circumference of the needle board 23 and inner surface of circumferential parts of the cover 3 there is the working gap 26.
  • the cover 3 is provided on the lower side with circumferential border 32 , between which and the processed web 1 , respectively the produced nonwoven fabric 11 , there is the gap 321 continuing into the circumferential sealing gap 322 between the stripping plate 24 and the border 32.
  • Embodiment represented in the Fig. 2 from the previous embodiment differs in that the needling device 2 is equipped with the bed plate 22 , whose surface adjacent to the processed fabric is identical as ground plane of the bed plate 24 . For the reason to provide a suitable gap 321 between the processed web 1 , respectively the produced nonwoven fabric 11 , and the border 32 of the cover 3 the supporting surface of the bed plate 22 is enlarged so that to circumference of the bed plate 22 the supporting borders 222 are attached.
  • Embodiment according to the Fig. 4 utilises the shaped cover 4 , whose annular circumferential cavity 41 has a shape suitable from the point of view of directing the air flow at machine operation.
  • the cover 5 in embodiment according to the Fig. 5 comprises at least one tilting side wall 51 serving to facilitate access of attendant during necessary intervention into the inner space of the cover 5.
  • the cover 6 is attached with its upper section directly to the driving box 20 .
  • This arrangement removes the working gaps 311 between the sleeves 31 of the cover 3 , 4 , 5 and the driving rods 232 , which are necessary at the above mentioned represented embodiments.
  • the needling device 2 is provided with two needle boards 23 , corresponding bed plates 22 and the stripping plates 24 .
  • the needle boards 23 of the needle machine in such a case usually perform a straight-lined reversible motion with mutually opposite phase.
  • Both needle boards 23 with another means of the needle device 2 are arranged under a common cover 7 .
  • the border of its lower section is replaced with tiltable slats 81 in a roof-like manner arranged in direction of motion of the processed web 1 , respectively of the produced nonwoven fabric 11 , and connected with the side walls of the cover 8 by means of hinges 82 .
  • the slats 81 are made of flexible plastic and their borders adjacent to the cover 8 are without hinges fastened to the side walls of the cover 8 . At least a part of the tiltable or flexible slats 81 is oriented so that by a possible excessive short-term overpressure in the space inside the cover 3 their borders are lifted.
  • the whole devices are arranged in a vertical opposite manner.
  • the stripping plate 24 , the needle board 23 and the driving box 20 are under the processed web 1 , while the bed plate 22 is positioned above the web 1 .
  • the processed web 1 is in a interrupted manner shifted by the feeding mechanism 21 in cooperation with the draw off mechanism 25 into the space between the needle board 23 and the stripping plate 24 .
  • the device At resting status of the device in the inner space of the cover 3 , 4 , 5 , 6 , 7 , 8 atmospheric pressure is present.
  • the web 1 stops.
  • the needles 231 are passing through holes 241 of the stripping plate 24 , penetrate the whole thickness of the standing web 1 and enter the holes 221 of the bed plate 22 .
  • the needle board 23 moves back into the upper dead centre, in which the needles 231 are outside the web 1 and further shifting of the web 1 occurs by the feeding mechanism 21 and the draw off mechanism 25 .
  • the tip and the not represented reverse barbs of the needle 231 in a known manner strengthen the web 1 and create the nonwoven fabric 11 for further use.
  • the frequency of running the needle board 23 in an exemplary embodiment is 1400 cycles per minute.
  • the space between the needle board 23 and the stripping plate 24 decreases quickly, at the same time expelled air flows from this space through the circumferential working gap 26 to opposite side of the needle board 23 in practically enclosed space inside the cover 3 , 4 , 5 , 7 , 8 .
  • Partial air pressures in various sections of space of the cover 3 , 4 , 5 , 7 , 8 are changed during operation of the device, nevertheless an average pressure is practically always on the level of atmospheric pressure.
  • Circumferential gap 26 is of a sufficiently great diameter, so that no excessive throttling of air flow occurs.
  • Total volume of air in the space inside the cover 3 , 4 , 5 , 6 , 7 , 8 at operation of the needling device 2 changes only by an insignificant change in volume of inner sections of the driving rods 232 .
  • the air only transfers from the space under the needle board 23 into the space above the needle board 23 and vice versa.
  • the common enclosed space is created. Naturally, the principle of operation of the needling device 2 is not changed.
  • the quantity of air leakage outside the cover 3 , 4 , 5 , 7 is yet reduced by leakage through the gap 321 as a result of a tight connection of lower section of the cover 3 , 4 , 5 , 7 with the stripping plate 24. This further reduces noise in vicinity of the machine.
  • a small quantity of air may leak from area above the needle board 23 around the driving box or through the space of the driving box 20 caused by untightness.
  • Air streaming at the needling device 2 with two one after another arranged needle boards 23 according to the Fig. 7 is considerably more complicated. Portion of the air here at a certain moment flows from the space between the needle board 23 and the stripping plate 24 of that section of the device whose needle board 23 moves in direction to the corresponding stripping plate 24 into the space between the needle board 23 and the stripping plate 24 of the second section of the device, because the second needle board 23 moves in direction from to it corresponding stripping plate 24 . Nevertheless function of the cover 7 from the point of view of reducing the low-frequency noise is very similar to other embodiments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
EP10177600A 2009-09-30 2010-09-20 Procédé et dispositif pour réduire le bruit généré durant le fonctionnement d'une aiguilleteuse pour la production de tissus non tissés Not-in-force EP2305871B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ20090636A CZ2009636A3 (cs) 2009-09-30 2009-09-30 Zpusob a zarízení ke snížení hluku vznikajícího pri cinnosti vpichovacího stroje pro výrobu netkaných textilií

Publications (2)

Publication Number Publication Date
EP2305871A1 true EP2305871A1 (fr) 2011-04-06
EP2305871B1 EP2305871B1 (fr) 2012-11-28

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EP10177600A Not-in-force EP2305871B1 (fr) 2009-09-30 2010-09-20 Procédé et dispositif pour réduire le bruit généré durant le fonctionnement d'une aiguilleteuse pour la production de tissus non tissés

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EP (1) EP2305871B1 (fr)
CZ (1) CZ2009636A3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102505358A (zh) * 2011-11-09 2012-06-20 杨长辉 一种立体提花针刺机
DE202012100066U1 (de) 2012-01-09 2013-02-08 Hi Tech Textile Holding Gmbh Triebwerkschutz
CN104044777A (zh) * 2014-06-08 2014-09-17 郑运婷 防改日期包装袋制造方法
CN111979646A (zh) * 2020-08-31 2020-11-24 周毅 一种用于无纺织物的针刺设备
CN113046930A (zh) * 2021-03-24 2021-06-29 武汉寰宇天承贸易有限公司 一种针刺无纺布制备工艺
CN114672929A (zh) * 2022-04-29 2022-06-28 杭州萧山凤凰纺织有限公司 一种无纺布加工设备及其使用方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576687A (en) * 1968-03-14 1971-04-27 Bigelow Sanford Inc Lubricated non-woven fabric and method of producing the same
US3877121A (en) * 1973-03-02 1975-04-15 Ernst Fehrer Ges Mbh & Co K G Needle punching apparatus
CZ152398A3 (cs) 1997-05-15 1998-12-16 Ernst Dr. Fehrer Zařízení pro vpichování rouna
CN2352549Y (zh) 1998-04-01 1999-12-08 太仓市双凤非织造布设备厂 组合式高速针刺机主轴传动装置
EP1384804B1 (fr) 2002-07-26 2007-10-24 Asselin-Thibeau Procédé pour limiter l'encrassement d'une aiguilleteuse par des fibres volantes et une aiguilleteuse mettant en oeuvre ledit procédé
CN101122066A (zh) * 2007-08-02 2008-02-13 常熟市飞龙机械有限公司 针刺机的针梁导向机构
CN201080546Y (zh) * 2007-08-02 2008-07-02 常熟市飞龙机械有限公司 针刺机的针梁导向机构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576687A (en) * 1968-03-14 1971-04-27 Bigelow Sanford Inc Lubricated non-woven fabric and method of producing the same
US3877121A (en) * 1973-03-02 1975-04-15 Ernst Fehrer Ges Mbh & Co K G Needle punching apparatus
CZ152398A3 (cs) 1997-05-15 1998-12-16 Ernst Dr. Fehrer Zařízení pro vpichování rouna
CN2352549Y (zh) 1998-04-01 1999-12-08 太仓市双凤非织造布设备厂 组合式高速针刺机主轴传动装置
EP1384804B1 (fr) 2002-07-26 2007-10-24 Asselin-Thibeau Procédé pour limiter l'encrassement d'une aiguilleteuse par des fibres volantes et une aiguilleteuse mettant en oeuvre ledit procédé
CN101122066A (zh) * 2007-08-02 2008-02-13 常熟市飞龙机械有限公司 针刺机的针梁导向机构
CN201080546Y (zh) * 2007-08-02 2008-07-02 常熟市飞龙机械有限公司 针刺机的针梁导向机构

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102505358A (zh) * 2011-11-09 2012-06-20 杨长辉 一种立体提花针刺机
DE202012100066U1 (de) 2012-01-09 2013-02-08 Hi Tech Textile Holding Gmbh Triebwerkschutz
CN104044777A (zh) * 2014-06-08 2014-09-17 郑运婷 防改日期包装袋制造方法
CN111979646A (zh) * 2020-08-31 2020-11-24 周毅 一种用于无纺织物的针刺设备
CN113046930A (zh) * 2021-03-24 2021-06-29 武汉寰宇天承贸易有限公司 一种针刺无纺布制备工艺
CN113046930B (zh) * 2021-03-24 2022-05-24 江苏宜航环保科技有限公司 一种针刺无纺布制备工艺
CN114672929A (zh) * 2022-04-29 2022-06-28 杭州萧山凤凰纺织有限公司 一种无纺布加工设备及其使用方法

Also Published As

Publication number Publication date
EP2305871B1 (fr) 2012-11-28
CZ2009636A3 (cs) 2011-04-13

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