EP2165014A1 - Machine d'aiguilletage - Google Patents

Machine d'aiguilletage

Info

Publication number
EP2165014A1
EP2165014A1 EP08774741A EP08774741A EP2165014A1 EP 2165014 A1 EP2165014 A1 EP 2165014A1 EP 08774741 A EP08774741 A EP 08774741A EP 08774741 A EP08774741 A EP 08774741A EP 2165014 A1 EP2165014 A1 EP 2165014A1
Authority
EP
European Patent Office
Prior art keywords
bearing
machine according
lubricant
dosing
metering
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
EP08774741A
Other languages
German (de)
English (en)
Other versions
EP2165014B1 (fr
Inventor
Tilman Reutter
Andreas Plump
Andreas Mayer
Daniel Bu
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.)
Hi Tech Textile Holding GmbH
Original Assignee
Oerlikon Textile GmbH and Co KG
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 Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP2165014A1 publication Critical patent/EP2165014A1/fr
Application granted granted Critical
Publication of EP2165014B1 publication Critical patent/EP2165014B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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 a needling machine for needling a fibrous web according to the preamble of claim 1.
  • a generic needle machine for needling a fiber web is known from US 5,873,152.
  • the known needle machine has a needle bar which holds a plurality of needles on its underside.
  • the needle bar is held by a movable beam support, which is driven by a vertical drive oscillating in an up and down movement.
  • the vertical drive has a transmission kinematics which consists of a crankshaft and a connecting rod connected to the crankshaft.
  • the connecting rod is coupled to the crankshaft via a bearing point, so that an upward and downward movement is transmitted to the beam carrier via the free end of the connecting rod.
  • the bearing point between the crankshaft and the connecting rod is arranged in a housing which is filled with an oil for lubrication of the bearing point.
  • the retained in the housing amount of oil for lubrication of the bearing point leads to the known needle machine to the fact that especially at higher stroke frequencies so-called churning losses arise on the one hand to deterioration of the efficiency of the crank mechanism and on the other hand to a heating of the oil and thus to a worsened Cool the bearing point.
  • the known needle machine is therefore unsuitable to allow high production speeds during needling a fiber web by correspondingly high stroke frequencies of the needle bar.
  • the transmission kinematics used for the vertical drive has a plurality of bearing points, leads at high production speeds to significant churning losses.
  • a needle machine in which the bearing point between the connecting rod and a pin is lubricated by means of a grease lubrication.
  • a grease is filled into a collecting channel assigned to the bearing points. This makes it possible to limit the amount of lubricant for lubrication of the bearings, so that, for example, churning losses are excluded. However, this does not ensure that a sufficient amount of grease is always supplied to the bearing. So it is not excluded that used fats remain in the bearing point of the connecting rod.
  • the provided grease does not allow cooling of the bearing. This would require expensive measures for heat removal from the bearings at higher production speeds and higher dynamic loads of the vertical drive. Also, the grease lubrication based needle machine is not suitable for higher speeds for driving the Nelbalkens.
  • the invention has the particular advantage that in the transmission of the crank movement of the vertical drive in an up and down movement of the piston rod, the bearing point of the connecting rod receives a customized to the respective operating condition lubrication.
  • the bearing can be independent of the set stroke frequency of the vertical drive with a always sufficient supply sufficient amount of lubricant.
  • the lubricating device is formed by a metering means and a metering line connected to the metering means, wherein the metering means continuously or intermittently supplies a minimum quantity of the lubricant via the metering line of the bearing point.
  • a lubrication system for rolling bearings in which a metered amount of lubricant via a metering directly to the rolling bearing is supplied.
  • Such known systems are based on the fact that the rolling bearings are arranged between a stationary component and a rotating component. The supply of lubricant always takes place via the stationary component.
  • the known system is not suitable to lubricate the bearing point of a vertical drive of a needle machine.
  • the dosing agent is formed by a metering valve which is connected by an outlet to the metering line and which is coupled through an inlet with a lubricant source.
  • the metering valve can be hydraulically, pneumatically or electrically controlled, so that a minimum lubrication of the bearing remains guaranteed throughout the operating time.
  • the lubricant source is formed according to an advantageous embodiment of the invention by at least one pump which is connected on one inlet side with a reservoir and on the outlet side with the metering valve.
  • a pressure difference can be used to supply a metered amount of a lubricant via the metering valve of the bearing.
  • the lubricant for example an oil, is supplied to the metering valve with an overpressure generated by the pump.
  • the preferred development of the invention offers the possibility to promote the low lubricant quantity released via the metering valve and to distribute it uniformly within the bearing point.
  • the funded by the pump from a reservoir lubricant is combined in the metering valve with a compressed air flow of the compressed air generator, so that in the metering a mixture of the lubricant and the compressed air is performed.
  • a lubricant oil is preferably used, so that a finest distribution of the lubricant in the form of an oil mist can be injected into the bearing. By entering into the bearing air flow can also achieve additional cooling, which is extremely effective especially when using bearings.
  • the outer ring is preferably formed with a central bore, which is connected on the one hand to the metering line and on the other hand opens into a bearing gap.
  • the rolling bearing can also be advantageously replaced by a plain bearing, wherein also preferably an outer ring is used with a bore for supplying the lubricant.
  • the vertical drive of the needle machine has several connecting rods, so that the development of the invention is particularly advantageous, in which the dosing is connected to a plurality of metering lines, which are assigned to a plurality of bearing points of the vertical drive. This means that several
  • the development of the invention represents a particularly advantageous variant in which the lubricating device has a laxative and a return line connected to the laxative, which return line is connected to the bearing point. This allows excess quantities of lubricant to be collected and removed at the bearing point.
  • escaping oil mist can be discharged particularly effectively by the development of the invention, in which the laxative has a vacuum generator.
  • the return line is connected to a suction port of the vacuum generator, so that the environment of the bearing is sucked.
  • a release agent is preferably connected to the blow port of the vacuum generator in order to separate the recycled mixture of air and lubricant for the recovery of the lubricant.
  • connection of the release agent to a reservoir thus enables a lubricant circuit, so that losses of the lubricant can be avoided.
  • the development of the invention is preferably carried out in which the bearing is sealed to the outside by a respective sealant, which sealing means a forms with the return line connected collecting chamber.
  • the collecting chamber is preferably formed in the middle region of the sealing means, wherein the collecting chamber is at least opposite the environment through a gap between the shaft and the sealing means. is sealed.
  • a pressure sink is formed, which receives both air from the environment as well as the exiting from the bearing oil mist in the middle of the sealant.
  • the return of the lubricant can advantageously be realized for several bearing points in that a plurality of return lines are connected in parallel with a plurality of bearing points and open into a collection valve arranged upstream of the laxative.
  • the needling machine according to the invention also has the particular advantage that the bearing points formed in the vertical drive can be arranged in an open construction without housing, so that a flexible arrangement and configuration of the vertical drive is possible.
  • FIG. 1 shows schematically a side view of a first embodiment of the device according to the invention.
  • FIG. 2 shows schematically a lubricating device of the vertical drive of the exemplary embodiment from FIG. 1
  • Fig. 3 shows schematically a cross-sectional view of a bearing between a connecting rod and a shaft of an embodiment of the erfmdungsgemä- coniferous machine
  • a first embodiment of the inventive needle machine for needling a fiber web is shown.
  • the embodiment of the According to the invention needle machine has a beam support 2, which holds a needle bar 1 on its underside.
  • the needle bar 1 holds on its underside a needle board 3 with a plurality of needles 4.
  • the needle board 3 with the needles 4 are associated with a scraper 46 and a tray 43, between which a fiber web 44 is guided.
  • the vertical drive 5 On the beam support 2 engages a vertical drive 5, the movable beam support 2 is oscillated in the vertical direction, so that the needle bar 1 with the needle board 3 performs an up and down movement.
  • the vertical drive 5 has at least one drive unit which engages over at least one beam support 2 on the needle bar 1 over the length of the needle bar 1.
  • the vertical drive 5 is formed by two shafts 6.1 and 6.2, which are connected to two connecting rods 8.1 and 8.2.
  • the connecting rods 8.1 and 8.2 each have a connecting rod 9.1 and 9.2, which are held by bearing means 11.1 and 11.2 respectively on an eccentric pin 7.1 and 7.2 of the shafts 6.1 and 6.2.
  • the shafts 6.1 and 6.2 are designed as crankshafts in this embodiment. Alternatively, the shafts 6.1 and 6.2 could also be designed as eccentric shafts.
  • connection between the shaft 6.1 and the connecting rod 9.1 is thus referred to as a first bearing 10.1 and the connection between the shaft 6.2 and the connecting rod 8.2 as the second bearing 10.2.
  • connecting rod eyes At the bottom of the connecting rods are 8.1 and 8.2 respectively by connecting rod eyes
  • each bearing rings 14.1 and 14.2 are provided.
  • the shafts 6.1 and 6.2 are driven synchronously with opposite direction of rotation, so that the beam support 2 is guided in parallel.
  • the vertical drive 5 is assigned a lubricating device 15.
  • the lubricating device 15 has a dosing means 16, which is coupled via a respective separate dosing 17.1 and 17.2 with the bearings 10.1 and 10.2.
  • the metering 17.1 and 17.2 open directly into the storage means 11.1 and 11.2.
  • the dosing means 16 is coupled to a lubricant source 19.
  • the dosing means 16 is formed by a metering valve 18 which is connected on the inlet side with a first line 23.1 with a pump 21 which is coupled to a reservoir 20. Via a second line 23.2, the metering valve 18 is connected to a compressed air generator 22.
  • a lubricant is preferably conveyed by the pump 21, an oil from the reservoir 20 in the line 23.1.
  • a compressed air flow is generated in parallel in the line 23.2.
  • the metering valve 18 can be hydraulically, pneumatically or electrically controlled to produce a continuous metering in the metering 17.1 and 17.2. However, it is also possible to supply the lubricant at intervals to the bearings 10.1 and 10.2.
  • the metering valve 18 is activated intermittently, so that a discontinuous metering through the metering 17.1 and 17.2 the bearings 10.1 and 10.2 is supplied. This ensures that during operation of the vertical drive 5, the bearing points 10.1 and 10.2 are each adequately lubricated so that impermissible heating and impermissible bearing friction are avoided.
  • bearing means 11.1 and 11.2 can be used in the bearing 10.1 and 10.2 both rolling bearing and plain bearings.
  • the dosing 17.3 and 17.4 are dashed lines for this purpose.
  • the metering 17.3 and 17.4 open directly into a bearing gap between the bearing ring 14.1 and 14.2 and in pins 13.1 and 13.2.
  • the bearings of the connecting rods 12.1 and 12.2 can also be integrated advantageous in the lubrication system.
  • the lubricant source illustrated in the exemplary embodiment according to FIG. 1 is exemplary.
  • the metering valve 18 could be connected to the pump 21 via a line 23.1 alone.
  • the pump 21 would suck on the inlet side, a lubricant preferably an oil from the reservoir and supply the metering valve 18 under an overpressure.
  • the lubricant would then be delivered metered by opening and closing a metering opening without supplying additional compressed air and conveyed to the storage location due to a pressure difference with respect to the bearing point.
  • a further embodiment of a lubricating device is shown in Fig. 2, as it would be used for example in the needle machine of FIG.
  • the bearing 10.1 is symbolically characterized by the eccentric pin 7.1, the bearing means 11.1 and the connecting rod 9.1.
  • the provided for supplying a minimum amount of lubricant components of the lubricating device 15 are identical to the embodiment of FIG. 1, so that reference is made to the above description at this point.
  • the laxative 25 is formed by a negative pressure source 26.
  • the vacuum source 26 is coupled to the return line 24 via a suction connection 29.
  • the negative pressure source 26 is connected to a release line 28 with a discharge line 45.
  • the release agent 28 is connected via an oil line 32 to the reservoir 20.
  • a second air line 31 provided on the outlet side of the separating means 28 leads directly into the environment.
  • a collecting valve 27 is provided in the sudlaufieitung 24 between the vacuum source 26 and the bearing 10.1.
  • the collection valve 27 has a plurality of ports on an inlet side, so that a plurality of return lines can be connected in parallel next to each other.
  • an outer area of the bearing 10.1 is sucked off.
  • the emerging from the bearing 10.1 oil mist are sucked by the action of a negative pressure in the gearraisingieitung 24 and fed via the negative pressure source 26 to the release agent 28.
  • the lubricant is filtered out of the air-oil mixture, so that a separation between the lubricant and an air flow takes place, wherein the air flow is discharged via the air line 31 into the environment and wherein the amount of oil recovered via the oil line 32 directly the reservoir 20 is supplied.
  • Air flow generated in the dosing the continuous or discontinuous a minimum amount of oil is supplied. Due to the air flow, self-supplied oil droplets can be evened out over the line length of the dosing line 17.1, so that a sufficient oil-air mixture reaches the bearing point 10.1. After passing through the bearing 10.1, the air-oil mixture formed from the exiting oil-air mixture and the ambient air is sucked through the return line 24, so that the bearing 10.1 is constantly flowed through with a lubricant. This can also be advantageous to realize high cooling effects to run at high production speeds corresponding high stroke frequencies of the vertical drive can.
  • FIG. 3 an embodiment of a bearing is shown schematically in cross section, as it could be formed for example in the needle machine shown in Fig. 1 between the connecting rod 8.1 and the shaft 6.1.
  • the connecting rod 9.1 is held rotatably in this example by a roller bearing 42 on the eccentric pin 7.1.
  • the rolling bearing 42 is hereby represented by an outer ring 33, a rolling element 34 and an inner ring 35.
  • the inner ring 35 is held on the circumference of the eccentric pin 7.1, wherein the inner ring between a shaft shoulder of the eccentric pin 7.1 and a support ring 37 is fixed.
  • the WälzShenia formed between the outer ring 33 and the inner ring 35 is sealed on both sides by sealing means 36.1 and 36.2 from the environment.
  • a middle metering bore 41 is formed in the outer ring 33 and is connected to the metering line 17.1 supplied via the connecting rod 8.1.
  • the metering bore 41 opens directly into a rolling gap formed on the running surface of the rolling body 34.
  • the sealing means 26.1 and 26.2 respectively in the central region a collecting chamber 38.1 and 38.2, which is sealed to the environment through a gap between the sealant 36.2 and the support ring 37 and also by a gap against the rolling bearing 42. Accordingly, between the sealant 36.1 and the eccentric cones 7.1 each formed on both sides of the collection chamber 38.1 sealing gaps.
  • the collecting chamber 38.1 and 38.2 are connected via bores 40.1 and 40.2 with a suction channel 39 within the connecting rod 9.1.
  • the suction channel 39 is connected to the return line 24.
  • the collecting chambers 38.1 and 38.2 within the sealing means 36.1 and 36.2 can be connected to a vacuum source. The result is a suction flow, which continuously dissipates the air-oil mixture entering the collection chamber 38.1 and 38.2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne une machine d'aiguilletage pour l'aiguilletage d'une nappe de fibres, dans laquelle une barre d'aiguilletage est guidée par un porte-barre mobile dans un déplacement vers le haut et vers le bas. Dans ce but est prévu un entraînement vertical qui présente au moins une tige de bielle qui est reliée par un emplacement de montage à un arbre. Un dispositif de lubrification qui lubrifie l'emplacement de montage par un lubrifiant est associé à l'entraînement vertical. Pour pouvoir obtenir une capacité de production aussi élevée que possible à des fréquences de battement de hauteur appropriée, le dispositif de lubrification présente selon l'invention un moyen de dosage et un conduit de dosage relié au moyen de dosage, le moyen de dosage apportant en continu ou par intermittence une quantité minimale de lubrifiant à l'emplacement de montage par l'intermédiaire du conduit de dosage.
EP08774741A 2007-07-06 2008-07-03 Machine d'aiguilletage Not-in-force EP2165014B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007031728.1A DE102007031728B4 (de) 2007-07-06 2007-07-06 Nadelmaschine
PCT/EP2008/058629 WO2009007308A1 (fr) 2007-07-06 2008-07-03 Machine d'aiguilletage

Publications (2)

Publication Number Publication Date
EP2165014A1 true EP2165014A1 (fr) 2010-03-24
EP2165014B1 EP2165014B1 (fr) 2012-10-17

Family

ID=40010990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08774741A Not-in-force EP2165014B1 (fr) 2007-07-06 2008-07-03 Machine d'aiguilletage

Country Status (3)

Country Link
EP (1) EP2165014B1 (fr)
DE (1) DE102007031728B4 (fr)
WO (1) WO2009007308A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017059984A1 (fr) * 2015-10-05 2017-04-13 TRüTZSCHLER GMBH & CO. KG Aiguilleteuse

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2702195B1 (fr) 2011-04-23 2015-07-15 Hi Tech Textile Holding GmbH Aiguilleteuse
CN102704196B (zh) * 2012-05-28 2014-03-26 常熟市伟成非织造成套设备有限公司 改进结构的针刺机的连杆轴承润滑机构
CN102704195B (zh) * 2012-05-28 2014-03-26 常熟市伟成非织造成套设备有限公司 针刺机连杆轴承润滑机构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE268747C (fr)
DD268747A1 (de) * 1988-02-12 1989-06-07 Werkzeugmasch Forschzent Vorrichtung zur oelschmierung von waelzlagern
IT1255727B (it) 1992-05-19 1995-11-15 Sistema di controllo del movimento rettilineo verticale alternativo della trave porta-aghi di una macchina agugliatrice
FR2729405B1 (fr) 1995-01-12 1997-04-18 Asselin Dispositif d'actionnement alternatif et aiguilleteuse ainsi equipee
GB2327469B (en) * 1997-07-17 2001-01-31 Nsk Rhp Europe Technology Co Ltd Lubricant distributor for spindle bearings

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009007308A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017059984A1 (fr) * 2015-10-05 2017-04-13 TRüTZSCHLER GMBH & CO. KG Aiguilleteuse

Also Published As

Publication number Publication date
WO2009007308A1 (fr) 2009-01-15
DE102007031728B4 (de) 2016-01-14
DE102007031728A1 (de) 2009-01-08
EP2165014B1 (fr) 2012-10-17

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