EP1811072A1 - Verfahren und Vorrichtung zur Steuerung einer Nadelmaschine - Google Patents

Verfahren und Vorrichtung zur Steuerung einer Nadelmaschine Download PDF

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Publication number
EP1811072A1
EP1811072A1 EP06370033A EP06370033A EP1811072A1 EP 1811072 A1 EP1811072 A1 EP 1811072A1 EP 06370033 A EP06370033 A EP 06370033A EP 06370033 A EP06370033 A EP 06370033A EP 1811072 A1 EP1811072 A1 EP 1811072A1
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EP
European Patent Office
Prior art keywords
needling
deformation
instantaneous
support
needling machine
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.)
Withdrawn
Application number
EP06370033A
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English (en)
French (fr)
Inventor
Jean-Francois Noel
François LOUIS
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.)
Asselin Thibeau SAS
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Asselin Thibeau SAS
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Filing date
Publication date
Application filed by Asselin Thibeau SAS filed Critical Asselin Thibeau SAS
Publication of EP1811072A1 publication Critical patent/EP1811072A1/de
Withdrawn legal-status Critical Current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 present invention relates to the real-time control of the operation of a needling machine used in the textile field to mechanically consolidate a fibrous product, in particular a nonwoven product.
  • the fibrous nonwoven product passes between two perforated plates, generally made of steel, and is traversed by parallel needles mounted on a support, which is commonly referred to as a needle board, and which is driven by a reciprocating movement parallel to the longitudinal direction of the needles and generally vertical.
  • a support frame generally of welded steel type and steel.
  • the fibers are interlaced by the movement of the needles, which consolidates the structure of the fibrous product.
  • the perforated plate located on the side of the needle removal position is generally called “stripper”.
  • cleaning plate serves to prevent the fibrous product from being driven by the needles during their withdrawal movement.
  • needleling table serves to prevent the fibrous product from being pushed by the needle tips during their penetration movement, and is commonly referred to as a "needling table”. In this text, it will be referred to as a "needling plate”.
  • a first type of dysfunction is linked to excessive needling effort, resulting for example from misalignment of the needles and holes in one of the two perforated plates, excessive fouling of the perforated plates with fibers. , a jam during the advance of the fibrous product, the presence of folds in the structure of the fibrous product. In the case of excessive or repeated needling efforts, it may be detrimental to accidental breakage of certain elements of the needling machine, and in particular needles and welds of the structure. It is therefore essential to be able to prevent this type of dysfunction.
  • a needling machine has the resonant frequency of its own, and it is essential not to make the needling machine work at a rate of needling which would provoke a resonance of the structure of the needling machine. For this reason, for each needling machine, the manufacturers may be required to define needling speed ranges that are prohibited.
  • the vibratory behavior of the needling machine is modified by various factors, the main ones being in particular the type of needled fibrous product (weight, thickness, type of fibers, size) and the type of needles.
  • the structure of the needling machine does not resonate, so which between resonance with another fibrous product having for example a higher weight or canvas.
  • this magnitude [needling force (F) or penetration energy (E)] is used to enslave automatically the position of the tray supporting the fibrous product relative to the end position of the needles, and thereby to automatically adjust in real time the depth of penetration of the needles in the fibrous product, as and when stacking fibrous layers.
  • this quantity is compared with two minimum and maximum thresholds, and it is verified in real time whether it is within the operating tolerance range delimited by these two predefined thresholds.
  • this quantity when this quantity is no longer within the predefined tolerance range, this may be due for example to wear or needle breakage, to a relative positioning defect of the table with respect to needles, or to a non-conforming evolution of the needled product or its strata.
  • the present invention aims to propose a new technical solution to control in real time the operation of a needling machine.
  • the invention thus has for its first object a method for controlling the operation of a needling machine comprising a support frame which supports deburring means and a needling support, at least one set of needles movable in translation in one direction. perpendicular to the needling support, and means for moving the set of needles in a reciprocating motion.
  • the carrier frame undergoes, under repeated needling effort, a variable elastic deformation.
  • the type of deformation depends on the structure of the carrier frame and the location of the carrier frame where this deformation is detected.
  • this deformation results in a variable elastic flexion of the carrier frame, and this flexion is detected. More particularly, bending occurs in a direction substantially parallel to the needling direction. Generally, the direction of needling (direction of movement of the needles) being vertical, preferably a vertical bending of the carrier frame is detected.
  • the deformation of the frame detected in the context of the invention is not necessarily a bending, but may be any other type of mechanical deformation of the frame, and for example a torsion.
  • the detection of the deformation of the support frame provided in step (a) above can be carried out either directly by directly measuring a deformation of the carrier frame, or indirectly by measuring a deformation of a element attached to the carrier frame, and in particular by measuring a deformation of the stripping means or the needling support.
  • the above-mentioned detection step (a) can be performed by different ways, by means of any sensor or set of sensors during the course of needling to detect directly or indirectly variations of deformation of the carrier frame.
  • step (a) the deformation detection is performed in a plane (P) perpendicular to the longitudinal axis of the support frame and substantially centered on the support frame.
  • the invention also has for another object a needling machine comprising a carrier frame which supports debarking means, a needling support, at least one set of needles movable in translation in a direction perpendicular to the needling support, and means allowing to move the set of needles in a reciprocating motion.
  • the needling device comprises at least one sensor making it possible to detect the instantaneous deformation of the carrier frame, and electronic means for processing the signal delivered by this sensor.
  • FIGS. 1 and 2 show a single-handed needling machine 1 which is used to needle any type of fibrous nonwoven product, and for example to needle a nonwoven web delivered upstream of the needling machine by a spreader. lapper.
  • This needling machine 1 is equipped with electronic means 2, which are specific to the invention, and which allow automatic and real-time control of the operation of the needling machine, and if necessary a detection of a malfunctioning of the needling machine 1. needling course. Needling
  • the needling and stripping plates 14 are mounted on the box 100.
  • the mobile beams 11 and their needles 12, as well as the means 13 (motor 131 / crank system 130) for their displacement in vertical translation, are mounted and supported by the two upper beams 102 of the carrier frame 10.
  • the fibrous product to needling (not shown in the figures) is positioned between the needling plates 14 and stripping 15.
  • the motor 131 drives in rotation the shafts 130a and 130b whose rotary movement is transformed into movements vertical translation alternating downwards (penetration of the needles into the fibrous product) and upwards (withdrawal of the needles).
  • the rotational speed of the motor 131 sets the needling speed of the fibrous product.
  • the carrier frame 10 undergoes a variable elastic deformation in the vertical plane (X, Y). translating by vertical variable bending (or more generally in the needling direction) of the box 100 and the upper beams 102.
  • this vertical bending has been exaggerated, it being specified that in fact that it is not visible to the naked eye.
  • the deformation sensor 20 is chosen and positioned on the carrier frame 10 so that it can detect the instantaneous vertical bending (in the vertical plane XY) of the support frame 10.
  • this sensor 20 is fixed on one of the two upper support beams 102 of the support frame, preferably substantially in the center of this beam 102 where the bending variations in progress. needling are the most important.
  • FIG. 6 shows an example of an analog measurement signal 201 obtained during needling by means of a sensor 20 constituted by a piezoelectric strain gage.
  • the variations in the amplitude over time of this measurement signal 201 correspond to the bending stress variations of the carrier beam 102 during needling.
  • the choice of one of the two carrier beams 102 and the substantially central position of the sensor 20 is essentially justified by the simplicity of access to the sensor 20 and the fact that the bending deformation the carrier beam 102 is larger in the center of this beam, and is therefore easier to detect.
  • the invention is however not limited to the implementation of a deformation sensor fixed on one of the upper carrier beams and for detecting the instantaneous bending of this beam, but extends to the implementation of any sensor or set of sensors for generally detecting directly or indirectly the instantaneous deformation of the carrier frame 10 bound to the needling.
  • this deformation of the support frame can be detected by positioning for example the sensor 20 on one of the two supporting beams 102 but at a non-central position of the beam or on other elements of the support frame 10, such as for example at one of the referenced positions (P1), (P2), (P3) and (P4) in FIG.
  • the bending detection of the support frame 10 can be carried out indirectly by measuring the instantaneous elastic deformation of any element which is rigidly fixed to the support frame 10 and whose measured elastic deformation results from the deformation of the carrier frame 10 during needling.
  • the deformation detection of the support frame 10 can be carried out indirectly by measuring the vertical bending of the needling plate 14 or of the stripping plate 15.
  • the deformation detected by the sensor 20 of Figure 1 is a bending of the frame in the direction of needling (in this case vertical bending).
  • the deformation detected during needling is not necessarily a bending, but may be any other type of mechanical deformation, and for example a twist.
  • the deformation detected will be designated "flexion", it being specified that the invention is not limited to a bending detection and that the teaching hereafter can be transposed to any other type of mechanical deformation of the carrier frame during needling.
  • this detection is preferably, but not necessarily, carried out at a point where the deformation is maximum, that is to say preferably in the case of the frame.
  • the first electronic means 21 for processing the measurement signal 201 essentially comprise an amplifier 210 for the amplification of the measurement signal 201, analog measurement means 212 delivering a secondary measurement signal 213 from the amplified signal 211 delivered by the amplifier 210, and an analog-to-digital converter 214 for sampling the secondary measurement signal 213.
  • the first electronic means 21 mentioned above are preferably positioned near the sensor 20, and are, for example, housed in a protective casing B fixed on the carrying beam 102.
  • the connection between the sensor 20 and the electronic means for the transmission of the measurement signal 201 is made wired by means of a short cable C ( Figure 3).
  • the transmission of the measurement signal 201 could also be made by means of a wireless link (for example RF communication).
  • the period of time ( ⁇ ) is greater than the duration of a needling pass (duration of rise and descent of the needles), and preferably the duration of a needling pass at the starting speed of the needling, because a malfunction can also occur during the starting phase of the needling machine during which the needling rate is still low.
  • the period of time ( ⁇ ) must not be too long, so as not to unnecessarily delay the detection of a malfunction with respect to its instant of appearance.
  • the aforementioned information [Min) and / or (Max) and / or (A max )] were measured over a period of time ( ⁇ ) of 2 seconds.
  • This information [(Min) and / or (Max) and / or (A max )] is transmitted in real time to the converter 214 by means of the signal 213.
  • this information [(Min) and / or (Max) and / or (A max )] is transmitted to the second electronic processing means 22, by means of a communication bus and for example to the using a "CAN-OPEN" communication protocol.
  • the measuring means 212 could be deleted; in this case the signal 201 delivered by the sensor 20 and representative of the instantaneous bending of the carrier frame 10 is directly sampled by the converter 214, after having possibly been amplified and / or filtered, and the digital signal 215 which results from this sampling is transmitted to the second electronic means of treatment 22.
  • the comparison module 220 receives from the first electronic processing means 21 a single type of parameter designated S, namely for example: the data (Min), the data (Max), the data (A maX ) or the data corresponding to the instantaneous bending detected in the case of the simplified variant mentioned above.
  • the second electronic processing means 22 will now be described essentially from a functional point of view. They are mainly implemented as a program executed by the processor of the central control unit of the needling machine.
  • this operating program of the second electronic processing means comprises a comparison module 220 and a control module 221.
  • this operating program of the second electronic processing means also comprises a module 222 for monitoring the loading the needling machine.
  • the comparison module 220 is parameterized with at least one threshold, and more particularly, in the preferred embodiment which will now be detailed, with three increasing thresholds S1, S2 and S3 predefined (S1 ⁇ S2 ⁇ S3).
  • the comparison module 220 is designed to compare the value of the parameter S measured, which is transmitted to it by the first electronic processing means 21, with the three thresholds S1, S2 and S3; the control module 221 is designed to trigger the predefined actions described hereinafter, depending on the result of this comparison transmitted to it by the comparison module 220.
  • the module 222 for tracking the loading of the needling machine is independent of the other two modules 220 and 221 and can therefore in a simplified version of the electronic control means 2, that is to say deleted, or be implemented alone without the other modules 220 and 221.
  • Modules 220 and 221 Management of thresholds S1, S2, and S3
  • the needling machine 1 operates correctly, and the control module 221 is inactive.
  • the control module 221 automatically triggers an alarm for the operator (for example an audible alarm in the form of a siren or ringing and / or visual in the form of a warning light or sending an alert message to a remote receiver).
  • an alarm for the operator for example an audible alarm in the form of a siren or ringing and / or visual in the form of a warning light or sending an alert message to a remote receiver.
  • This alarm is active as long as the value S remains in the range [S1; S2].
  • this alarm remains active for at least one predefined duration, for example 2 minutes, this corresponds to the detection of a malfunctioning of the needling machine 1, and the control module 221 automatically triggers a synchronous stopping of the needling machine 1, c i.e. a synchronized measurement stop 211 with the other machine or machines of the production line to which the needling machine 1 belongs.
  • This synchronous stop is obtained by means of a predefined command sent by the control module 221. to the automaton supervising the operation of the production line to which the needling machine 1 belongs.
  • the control module 221 automatically and immediately triggers a synchronous stopping of the needling machine 1 and an alarm for the operator ( detecting a malfunction of the needling machine 1).
  • the control module 221 automatically and immediately triggers an immediate and asynchronous emergency stop of the needling machine 1 and an alarm for the operator (detection a significant dysfunction of the needling machine 1).
  • the malfunction is recorded with the date, the time and the value of the parameter S making it possible to detect the malfunction, which then makes it possible to have a history of the operation of the needling machine.
  • the value of the parameter S derived from a measurement of the bending of the carrier frame 10 of the needling machine 1 is representative of the forces to which the needling machine 1 is subjected, and thus provides an indication of the load of the needling machine 1.
  • An abnormal and excessive needling effort results, for example, from a misalignment of the needles 12 and the holes of one of the perforated or needling perforated plates 14 or of excessive fouling by fibers. or other of one of the two needling plates 14 or 15, padding during the advance of the fibrous product between the two needling plates 14 and cleaning 15, the presence of pleats in the structure of the fibrous product.
  • An abnormal and excessive oscillation of the carrier frame 10 of the machine may be linked to the fact that the needling speed is too close to the resonance frequency in the vertical bending mode of the machine. structure of the needling machine 1.
  • thresholds S1, S2, S3 makes it possible to graduate the importance of the malfunction that is detected and thus to adapt the resulting measurements (delayed synchronous stop, immediate synchronous stop, immediate asynchronous emergency stop). ).
  • the needling machine 1 has needling speeds ranges that are prohibited for reasons related to the vibratory behavior of the needling machine.
  • forbidden needling speed ranges correspond to striking frequencies that are multiples of the frequency of the vertical bending mode of the support frame 10.
  • these forbidden needling speed ranges correspond to the harmonics 3, 4 and 5 of the vertical bending mode of the carrier frame 10 with a width of +/- 3 Hz around the resonance frequency.
  • the electronic control means 2 are designed to manage these ranges of prohibited needling speeds in the following manner.
  • the required needling speed range or ranges, for a given needling machine 1 are calculated from a measurement of the vertical flexing mode of the needling machine and are stored in a memory of the electronic control means 2, and more particularly second electronic processing means 22.
  • control module 221 is designed to perform the following operations automatically, possibly resulting in a modification of the needling speed.
  • the needling machine is allowed to operate at any needling speed, including, if necessary, at a needling speed within a so-called forbidden range.
  • the module 221 takes no action to change the needling rate of the needling machine.
  • the control module 221 checks whether the needling speed is within a forbidden range parameterized in memory, and in the affirmative automatically triggers an alarm for the operator.
  • This alarm is active as long as the value S remains in the range [S1; S2] and that the needling speed is within a forbidden range.
  • control module 221 detects a malfunction and sends the controller controlling the needling machine a shifting control for maximum acceleration or deceleration of the needling speed (maximum acceleration or deceleration of the motor 131) until the needling speed is outside the forbidden range.
  • the control module 221 checks whether the needling speed is within a forbidden range parameterized in memory, and in the 'affirmative' (detection of a malfunction) immediately sends the controller controlling the needling machine a shift control to obtain maximum acceleration or deceleration of the needling speed (maximum acceleration or deceleration of the engine 131) to Needling speed is outside the forbidden range.
  • the control module 221 automatically and immediately triggers an immediate and asynchronous emergency stop of the needling machine 1 and an alarm for the operator (detection of a major malfunction).
  • This module 222 is designed to display for an operator, on a control screen 223, the measured value of the parameter S characteristic of the load of the needling machine, or preferably of a parameter derived from it such as, for example, the percentage charge of the needling machine (S / S1).
  • This display allows the operator to quickly know an indicator of the operation of the needling machine, so that it can more easily monitor the proper functioning of the needling machine by detecting a malfunction (for example when the load ratio displayed is higher). 100%), and take the necessary measures (eg manual control by the operator of the synchronous or asynchronous shutdown of the needling machine.
  • the module 222 also stores in a memory the different successive values measured for the parameter S, or the different successive values of the load ratio (S / S1), in order to constitute a history of the evolution of the load or the rate of charge of the needling machine.
  • the invention is not limited to the preferred embodiments which have just been described with reference to the appended figures.
  • the invention can be implemented with any type of needling structure, and in particular is not limited to a needling machine whose support frame has the particular structure of FIG. 3.
  • the invention does not is not limited to a needling machine comprising respectively a needling table and a stripping plate made by means of perforated plates 14,15, said perforated plates 14 and 15 can indeed be replaced by equivalent means fulfilling the same functions respectively of support needling and stripping.
  • the perforated needling plate 14 may be replaced by a needling support made by means of brushes or strips.
  • the invention is not limited to needling type needling, but can also be applied to control the operation of a needling machine with several strikes.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Finger-Pressure Massage (AREA)
EP06370033A 2006-01-20 2006-11-08 Verfahren und Vorrichtung zur Steuerung einer Nadelmaschine Withdrawn EP1811072A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0600499A FR2896518B1 (fr) 2006-01-20 2006-01-20 Procede et moyens pour le controle du foctionnement d'une aiguilleteuse

Publications (1)

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EP1811072A1 true EP1811072A1 (de) 2007-07-25

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EP06370033A Withdrawn EP1811072A1 (de) 2006-01-20 2006-11-08 Verfahren und Vorrichtung zur Steuerung einer Nadelmaschine

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EP (1) EP1811072A1 (de)
CN (1) CN101003927A (de)
FR (1) FR2896518B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2119818A1 (de) * 2008-05-13 2009-11-18 Oerlikon Textile GmbH & Co. KG Nadelmaschine und Verfahren zum Betreiben einer Nadelmaschine
WO2015195056A1 (en) * 2014-06-17 2015-12-23 Chudoba Lukáš Appliance for manufacturing of nonwoven fabric with possibility to regulate the injection and nonwoven fabric
WO2017081241A1 (de) * 2015-11-11 2017-05-18 Autefa Solutions Germany Gmbh Flor-verfestigungsvorrichtung zum verfestigen von flor und steuerungseinrichtung und verfahren zum betrieb von antriebseinrichtungen der flor-verfestigungsvorrichtung
DE102016106292B3 (de) * 2016-04-06 2017-10-19 Johann Borgers GmbH Verfahren zur zustandsorientierten Instandhaltung einer Nadelmaschine
EP4144904A1 (de) 2021-09-06 2023-03-08 Andritz Asselin-Thibeau Nadelmaschine zum nadeln einer faserbahn oder eines faservlieses, insbesondere eines faservlieses

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109137299B (zh) * 2018-09-28 2021-07-06 广州泉德纺织品有限公司 一种电脑控制针刺的装置及其使用方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698386A1 (fr) * 1992-11-23 1994-05-27 Asselin Aiguilleteuse et procédé d'aiguilletage s'y rapportant.
WO2003000978A1 (fr) * 2001-06-05 2003-01-03 Messier-Bugatti Procede de controle en temps reel de l'aiguilletage de structures fibreuses et dispositif d'aiguilletage pour sa mise en oeuvre

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698386A1 (fr) * 1992-11-23 1994-05-27 Asselin Aiguilleteuse et procédé d'aiguilletage s'y rapportant.
WO2003000978A1 (fr) * 2001-06-05 2003-01-03 Messier-Bugatti Procede de controle en temps reel de l'aiguilletage de structures fibreuses et dispositif d'aiguilletage pour sa mise en oeuvre

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2119818A1 (de) * 2008-05-13 2009-11-18 Oerlikon Textile GmbH & Co. KG Nadelmaschine und Verfahren zum Betreiben einer Nadelmaschine
WO2015195056A1 (en) * 2014-06-17 2015-12-23 Chudoba Lukáš Appliance for manufacturing of nonwoven fabric with possibility to regulate the injection and nonwoven fabric
WO2017081241A1 (de) * 2015-11-11 2017-05-18 Autefa Solutions Germany Gmbh Flor-verfestigungsvorrichtung zum verfestigen von flor und steuerungseinrichtung und verfahren zum betrieb von antriebseinrichtungen der flor-verfestigungsvorrichtung
US11091862B2 (en) 2015-11-11 2021-08-17 Autefa Solutions Germany Gmbh Formed-fabric-strengthening device for strengthening formed fabric and control device and process for operating drive devices of the formed-fabric-strengthening device
DE102016106292B3 (de) * 2016-04-06 2017-10-19 Johann Borgers GmbH Verfahren zur zustandsorientierten Instandhaltung einer Nadelmaschine
EP4144904A1 (de) 2021-09-06 2023-03-08 Andritz Asselin-Thibeau Nadelmaschine zum nadeln einer faserbahn oder eines faservlieses, insbesondere eines faservlieses
FR3126715A1 (fr) * 2021-09-06 2023-03-10 Andritz Asselin-Thibeau Installation formant aiguilleteuse pour aiguilleter une nappe ou un voile de fibres, notamment non tissé

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Publication number Publication date
FR2896518A1 (fr) 2007-07-27
FR2896518B1 (fr) 2009-02-27
CN101003927A (zh) 2007-07-25

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