EP3141640A1 - Kreuzleger und verfahren zur steuerung eines kreuzlegers - Google Patents

Kreuzleger und verfahren zur steuerung eines kreuzlegers Download PDF

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Publication number
EP3141640A1
EP3141640A1 EP16186076.2A EP16186076A EP3141640A1 EP 3141640 A1 EP3141640 A1 EP 3141640A1 EP 16186076 A EP16186076 A EP 16186076A EP 3141640 A1 EP3141640 A1 EP 3141640A1
Authority
EP
European Patent Office
Prior art keywords
carriage
lapper
driven
motor
web
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
EP16186076.2A
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English (en)
French (fr)
Other versions
EP3141640C0 (de
EP3141640B1 (de
Inventor
Hugues Leroy
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.)
Andritz Asselin Thibeau SAS
Original Assignee
Andritz Asselin Thibeau SAS
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Publication date
Application filed by Andritz Asselin Thibeau SAS filed Critical Andritz Asselin Thibeau SAS
Publication of EP3141640A1 publication Critical patent/EP3141640A1/de
Application granted granted Critical
Publication of EP3141640C0 publication Critical patent/EP3141640C0/de
Publication of EP3141640B1 publication Critical patent/EP3141640B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above

Definitions

  • the present invention relates to a spreader-spreader device intended to cover a web of fibers, in particular nonwoven fibers, in particular at the exit of a card device, as well as to a method for controlling a crosslapper of this type. kind.
  • a crosslapper disposed at the exit of a card device producing a fleece of nonwoven fibers comprises a front mat bringing the web of fibers into the spreader-lapper to a moving storage trolley according to a movement back and forth, a back carpet bringing the accumulated web to a lapper carriage also movable in a back and forth motion and an exit apron, the accumulator carriage being arranged to return the fiber web to the lapper carriage, and the latter being arranged to deposit the accumulated veil and returned by the accumulator carriage on the apron to obtain a sheet of layers which are obliquely, alternately in one direction and the other, with respect to the direction in length of the tablecloth.
  • the characteristics of the web that one wishes to obtain are regulated in advance on the basis of the settings of the entry speeds of the veil, speeds and races. moving carriages back and forth, and generally kinematic data of the components of the lapper spreader.
  • the spreader-lapper devices known from the prior art have the disadvantage that defects of uniformity compared to the characteristics set in advance appearing here and there on the final tablecloth. This is particularly the case when trying to increase production speed by using more powerful engines.
  • the present invention aims at a lapping spreader making it possible to obtain a sheet which is as uniform as possible with respect to these characteristics set in advance, and preferably in the speed range. of the highest possible production.
  • a spreader-lapper in particular arranged at the exit of a card device producing a web of fibers, in particular non-woven fibers, comprising a front carpet bringing the fiber web into the crosslapper up to an accumulator carriage, in particular moving in a reciprocating motion; a rear carpet bringing the accumulated web to a lapper carriage, in particular also moving in a back and forth motion; and an output apron, the accumulator carriage being arranged to return the fiber web to the lapper carriage, and the latter being arranged to deposit the accumulated veil and returned by the accumulator carriage to the apron at an angle, alternately in a direction and in the other, with respect to the lengthwise direction of the web, the front and rear mats being driven by rollers respective front and rear drive means, is characterized by anti-slip means for preventing relative sliding of at least one of the front and rear mats relative to its respective roller, especially rear, preferably both front mats. and back.
  • the inventor of the present invention has understood that the defects of uniformity with respect to the characteristics set in advance appearing on the sheet obtained at the output of the crosslapper are due to uncontrolled speed differentials between the front mat and the rear carpet in particular in the course of the sail between the accumulator carriage and the lapper carriage where the web is supported by the rear carpet and capped by the front carpet, and at speed differentials between the means bringing the card web and the carpet before taking it up and speed differentials between the rear carpet bringing the sail into the lapper carriage and the speed of the latter laying the web on the web forming the lapper output, each of these causes of failure is induced in particular by sliding phenomena between the front carpet or the rear carpet and its control roller during the acceleration or deceleration phases of the upholstery s intervening in particular at each inversion of the movement of the topping carriage. As the accelerations and decelerations of the mats increase with the entry speed of the lapper, the defects induced by these sliding phenomena are accentuated with the speed of production.
  • the anti-slip means consist of at least one auxiliary drive roller associated with an auxiliary motor, which applies a complementary actuating force to the respective drive roller.
  • auxiliary drive roller in addition to the main drive roller, it facilitates the fine adjustment of the movement of the belt relative to the sail, in particular by avoiding having to spend the effort necessary to accelerate any the length of the carpet in a single control point and thus increase the risk of slippage between the carpet and its control roller during strong accelerations.
  • the or each auxiliary drive roller is driven by an auxiliary motor, preferably controlled in torque.
  • the or each main driving roller is driven by a main motor, preferably speed controlled.
  • the torque of the or each auxiliary motor is controlled as a function, in particular proportionally, of the acceleration of the lapping carriage and as a function of the lapping cycles (forward acceleration, forward deceleration, return acceleration, reverse deceleration) so as to relieve the main engine in these phases of acceleration and deceleration thus reducing the effort to be transmitted between the main drive roller and the belt.
  • the present invention also relates to a method for controlling a spreader-spreader comprising a front mat, an accumulator carriage, a rear mat, a lapper carriage and an apron, the speeds and displacements of the various elements of the lapper spreader being adjusted to advance to obtain a mat having predetermined characteristics, the front mat being driven by a front drive roller driven by a front main motor and the rear mat being driven by a rear drive roller driven by a rear main engine, is characterized by the step of providing anti-slip means for canceling the sliding between at least one of the front and rear carpet and its respective drive roller, including at least one roller of auxiliary drive, particularly driven by a torque-controlled auxiliary motor.
  • a spreader-lapper 1 according to one embodiment of the invention.
  • This lapping spreader is disposed downstream of a card producing a nonwoven web that arrives on a mat 2 before endless.
  • the front endless belt 2 comprises a section 21 rising slope followed by a horizontal section extending to a trolley 12 accumulator.
  • the endless conveyor belt then comprises several sections in succession, in particular the sections 22, 23, 25, 26, 27 and 29 before returning to the section 21.
  • a simple embodiment is provided. 2d detour roll around which the carpet 2 before performs a half turn, the rear carpet 5 recovering the web 4 after flipping the sail to transport it to the lapper carriage 9.
  • the movements and / or displacements of the carriages 9 and 12 and the belts 5 and 2 are controlled by a central unit which controls their respective motor according to the desired kinematic data (positions, speeds, acceleration) for each, these settings defining the parameters (including length, orientation bias folds and surface density) desired for the final web.
  • the two carpets 2 and 5 are endless carpets that run in opposite directions from each other.
  • the inlet belt 2 is guided along its travel path by rollers 2a to 2n.
  • the rear carpet 5 is guided along its path by rollers 5b to 5n.
  • the rollers are freely rotatable, except those connected to motor means, as described in the present application.
  • the two mats are driven so as to have in the overlapping area of the web (between the two carriages and up to the apron, in particular in the vertical passage 17 just before the site 11 of deposit on the sheet lying on the apron 3 (driven by rollers, including the roller 3a), equal speeds corresponding to the desired speed of supply of the web 4 at the site 11 deposition.
  • the rear carpet 5 makes a 180 ° turn around the roll 5g after the area 52 overlap / nip of the web by the two mats 2 and 5.
  • the carpet 2 input is diverted around a detour roll 2f.
  • the lapper carriage moves back and forth in the horizontal direction in the figure.
  • the belt 5 undergoes a variation in its length (substantially equal to twice the displacement in one direction given the carriage 9). It is therefore necessary to provide compensation for this variation, which is achieved by the fact that the rear mat performs a 180 ° turn around a roller 51 carried by a compensating carriage 16 moving back and forth in synchronization with the movement of the carriage 9.
  • regions 56 and 57 of the belt 5 shorten when the regions 52, 53 and 59 of the belt 5 increase and vice versa.
  • a toothed belt 76 fixed at one end to the lapper carriage and at the other end to the carriage 16, the belt 76 meshing with a driving pulley 77 connected to a motor with two directions of travel, controlled by speed.
  • an inextensible cable 78 connects the other two sides of the carriages 9 and 16.
  • Each of the belts 2, 5 passes over a respective motor roller 2i, 5i connected to a respective motor 74, 79 controlled by speed (servo motor, stepper or similar).
  • Two return rollers, 2h, 2j and 5h, 5j are arranged on either side of the drive rollers 2i, 5i, in order to maximize the winding of the belt around its control roller and therefore its adhesion.
  • the drive motors 74, 79 and the motors of the pulleys 72, 77 are controlled (by the CPU not shown) to adapt them to the desired characteristics of the final product to be obtained (length, surface density, etc.) which depend in particular on the speed of entry of the web and / or the travel of the lapper carriage and / or accelerations of the trolleys, and / or others.
  • a complementary motor 101 acts on the carpet 2 before. It operates a 2m drive roll, which is lined with an adherent coating and is preferably associated with a detour roller 2n to increase the winding of the belt around the roller 2m.
  • the motor roller 2i and the complementary motor roller 2m are placed relatively far from each other along the path of the belt to distribute as much as possible the tensile stresses, especially during the acceleration phases.
  • the complementary motor 101 is, according to a preferred embodiment, controlled in torque, in particular for each point of the lapping cycle of the crosslapper.
  • the torque of the complementary motor is controlled to prevent relative sliding between the front belt 2 and the roller 2i motor.
  • a complementary motor 111 acts on the rear mat. It actuates a drive roll 5m, which is preferably lined with an adherent coating and associated with a detour roll 5n to increase the winding of the carpet around the roll 5m.
  • the motor roller 5i and the complementary motor roller 5m are placed relatively far apart from each other along the path of the belt to distribute as much as possible the tensile stresses, especially during the acceleration phases.
  • the complementary motor 111 is preferably controlled in torque, in particular for each point of the lapping cycle of the crosslapper.
  • the torque of the complementary motor is controlled to prevent relative sliding between the belt 5 and the roller 5i motor.
  • the complementary engines make it possible to improve the behavior of the lapping spreader by canceling on the one hand the slipping of mats on their control rollers and on the other hand by limiting the variations of tension in the mats during the phases of acceleration and deceleration thanks to the two-point control of each carpet. This fights the effects of carpet slippage on the tablecloth.
  • either lighter and / or stronger main motors can be used than if there is only one motor per belt, or higher working speeds, in particular by greatly reducing the wear of the mats. by a better distribution of the tensile stresses acting on the mats.
  • a topping cycle can be as follows: We start from a situation where the lapper carriage is at the end of its front side stroke.
  • the carriage 9 is then at a standstill while the carriage 12 moves at a constant speed towards the rear to lengthen the regions 21 and 22 of the belt 2.
  • the speed V74 of the main motor 74 of the belt 2 is zero because the regions 22 and 23 are motionless.
  • the speed V12 of the carriage 12 is equal to half the entry speed of the sail 4.
  • the speed of the region 52 of pinching of the belt 5 is zero because equal to the speed of the region 22 of the belt 2.
  • the speed of the regions 58 and 59 is zero.
  • the speed V111 of the engine 111 is zero.
  • the speed V79 of the engine 79 is twice the speed of the lapper carriage.
  • the torque of the motors is defined as being positive, which makes it possible to accelerate in the direction of the product the belts 2 and 5.
  • the motor pairs 74 and 101 are therefore defined as being positive in the counterclockwise direction while the motor pairs 79 and 111 are defined as positive in the clockwise direction.
  • a first phase P1 the lapper carriage accelerates backward (to the left at the figure 2 ), starting his movement to go.
  • the speed of the sections 52, 57, 58 and 59 remain zero while the sections 53 to 56 undergo an acceleration equal to 2 times that of the lapper carriage 9 and its compensating carriage 16. Due to the acceleration of the sections 55 and 56 as well as the compensator carriage 16 on the one hand and the need to maintain the zero speed in the sections 52, 57, 58 and 59, the application of a positive torque in the motor 111 yet at zero speed allows s' to oppose the tension induced by the acceleration of the sections 58, 59 and 52 as well as by the acceleration in rotation of the rollers 5j, 5k and 51 which they induce.
  • the positive torque applied by the motor 111 yet at zero speed, thus relieves the engine 79 while reducing the voltage induced by these accelerations in the sections 58, 59 and 52.
  • this phase P1 the entire circuit of the carpet before 2, only the rollers 2e, 2f and 2g undergo an acceleration induced by the acceleration of the carriage 9, which implies that a positive non-zero torque is applied by the motor 74 in order to maintain zero the speed of the sections 22 and 23.
  • the torque applied by the motor 101 may then be zero or simply contribute to opposing the rotational friction of the roller 21.
  • This phase ends beyond the middle of the course of the lapper carriage 9 and in particular beyond the last third of its race to enter a phase P3 of deceleration of the carriage 9 to its stop at the end of the race to go.
  • the speed of the sections 52, 57, 58 and 59 remain zero while the sections 53 to 56 undergo a deceleration equal to 2 times that of the lapper carriage 9 and its compensating carriage 16.
  • the application of a negative torque in the motor 111 yet at zero speed allows to oppose the voltage induced by the deceleration of the sections 52 and 53 as well as by the rotational deceleration of the rollers 5g and 5h that they induce.
  • the negative torque applied by the motor 111, yet at zero speed thus relieves the motor 79 while reducing the voltage induced by these accelerations in the sections 57, 56 and 55.
  • phase P4 the lapper carriage 9 accelerates toward the entrance (to the right at the figure 2 ) beginning the return phase.
  • the accumulator carriage which had remained at a constant speed during the phases P1 to P3 starts its deceleration until it stops and then reverses.
  • the sections 53 to 56 and the rollers 5h to 5k are at zero speed.
  • the carpet section 52 and the rollers 5m, 5n and 5b undergo an acceleration equal to 2 times that of the carriage 9 in order to feed it, while the rollers 5c to 5f, as well as 51, undergo a combination between 2 times the accelerating the lapper carriage 9 and the deceleration of the accumulator carriage 12.
  • the motor 79 will apply a positive torque opposing the movement of the section 53 induced by the accelerations of the rollers 5b to 5g.
  • a positive torque on the engine 111 will assist the engine 79 by contributing in particular to the acceleration of the roller 51 and thus to the reduction of the induced voltages in the sections 58, 59, 52 and 53.
  • a fifth phase P5 the carriages are at a constant speed, all the drive couples being low.
  • This phase ends beyond the middle of the course of the lapper carriage 9 and in particular beyond the last third of its race to enter a phase P6 of deceleration of the carriage 9 until its end at the end of the return stroke.
  • the speed of the sections 53, 55 and 56 remain zero while the sections 52 and 57 to 59 undergo a deceleration equal to 2 times that of the lapper carriage 9 and its compensating carriage 16.
  • the application of a negative torque in the motor 79 yet at zero speed makes it possible to oppose the voltage induced by the deceleration of the sections 53, 55 and 56 as well as by the deceleration in rotation of the rollers 5b at 5g and 51 at 5n which they induce.
  • the negative torque applied by the motor 111 thus relieves the motor 79 while reducing the voltage induced by these accelerations in the sections 57, 56 and 55.
  • the engine 101 can indeed contribute to the acceleration of the rollers 2c and 2d induced by the acceleration of the accumulator carriage 12 but also to the deceleration of the rollers 2j to 21 induced by the need to decelerate the section 42 of the sail and therefore the section 22 at twice the deceleration of the lapper carriage 9 in order to maintain a speed of delivery of the web at point 11 equal to the speed of the lapper carriage 9.
  • a preferred auxiliary anti-slip means is an auxiliary drive roller associated with an auxiliary drive roller (2m, 5m) associated with a motor (101; actuating complementary to the respective driving roller of said at least one of the front and rear mats, itself driven by a respective main motor (74; 79).
  • auxiliary drive roller associated with an auxiliary drive roller (2m, 5m) associated with a motor (101; actuating complementary to the respective driving roller of said at least one of the front and rear mats, itself driven by a respective main motor (74; 79).
  • anti-slip means may be provided, for example an anti-slip coating, anti-slip rolls, perforated or toothed mats or the like without departing from the scope of protection of the invention which is defined by the claims , especially claims 1 and 7.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Advancing Webs (AREA)
EP16186076.2A 2015-09-02 2016-08-29 Kreuzleger und verfahren zur steuerung eines kreuzlegers Active EP3141640B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1501818A FR3040398B1 (fr) 2015-09-02 2015-09-02 Dispositif formant etaleur -nappeur et procede pour commander un etaleur-nappeur de ce genre

Publications (3)

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EP3141640A1 true EP3141640A1 (de) 2017-03-15
EP3141640C0 EP3141640C0 (de) 2024-04-17
EP3141640B1 EP3141640B1 (de) 2024-04-17

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EP16186076.2A Active EP3141640B1 (de) 2015-09-02 2016-08-29 Kreuzleger und verfahren zur steuerung eines kreuzlegers

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EP (1) EP3141640B1 (de)
FR (2) FR3040398B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107034588A (zh) * 2017-06-08 2017-08-11 常熟市伟成非织造成套设备有限公司 具有压棉功能的铺网小车
CN107043967A (zh) * 2017-06-08 2017-08-15 常熟市伟成非织造成套设备有限公司 具有压棉功能的铺网机
CN109825953A (zh) * 2019-03-14 2019-05-31 常熟市弘毅无纺机械有限公司 一种交叉铺网机
CN110670244A (zh) * 2019-11-20 2020-01-10 常熟市振泰无纺机械有限公司 高速铺网机
CN110760995A (zh) * 2019-11-13 2020-02-07 常熟万龙机械有限公司 一种铺网机
CN117947579A (zh) * 2024-03-27 2024-04-30 厦门当盛新材料有限公司 多单元组合式高速纺丝铺网机、铺网方法及闪蒸无纺布

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3063741A1 (fr) * 2017-03-09 2018-09-14 Andritz Asselin Thibeau Etaleur nappeur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE525809C (de) * 1931-05-29 Mix & Genest Akt Ges Mehrfacher Antrieb fuer Foerderbaender
FR2045652A2 (fr) * 1969-06-16 1971-03-05 Forderanlagen Bautzen Dispositif de commande, en particulier pour l'entraînement multiple de transporteurs circulaires pour l'obtention d'un transfert de charge uniforme des dispositifs d'entraînement individuels.
EP0522893A2 (de) 1991-06-03 1993-01-13 ETABLISSEMENTS ASSELIN (Société Anonyme) Vliesbandleger
US5452791A (en) * 1994-07-18 1995-09-26 Cominco Engineering Services Ltd. Dual drive for belt conveyor
FR2770855A1 (fr) * 1997-11-07 1999-05-14 Asselin Procede et dispositif pour produire une nappe textile
FR2791364A1 (fr) 1999-03-23 2000-09-29 Asselin Etaleur-nappeur
EP1816243A1 (de) 2006-02-01 2007-08-08 Oskar Dilo Maschinenfabrik KG Vorrichtung zum Legen eines Vlieses

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612306B1 (de) * 2004-07-01 2008-06-04 Oskar Dilo Maschinenfabrik KG Vliesleger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE525809C (de) * 1931-05-29 Mix & Genest Akt Ges Mehrfacher Antrieb fuer Foerderbaender
FR2045652A2 (fr) * 1969-06-16 1971-03-05 Forderanlagen Bautzen Dispositif de commande, en particulier pour l'entraînement multiple de transporteurs circulaires pour l'obtention d'un transfert de charge uniforme des dispositifs d'entraînement individuels.
EP0522893A2 (de) 1991-06-03 1993-01-13 ETABLISSEMENTS ASSELIN (Société Anonyme) Vliesbandleger
US5452791A (en) * 1994-07-18 1995-09-26 Cominco Engineering Services Ltd. Dual drive for belt conveyor
FR2770855A1 (fr) * 1997-11-07 1999-05-14 Asselin Procede et dispositif pour produire une nappe textile
FR2791364A1 (fr) 1999-03-23 2000-09-29 Asselin Etaleur-nappeur
EP1816243A1 (de) 2006-02-01 2007-08-08 Oskar Dilo Maschinenfabrik KG Vorrichtung zum Legen eines Vlieses

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107034588A (zh) * 2017-06-08 2017-08-11 常熟市伟成非织造成套设备有限公司 具有压棉功能的铺网小车
CN107043967A (zh) * 2017-06-08 2017-08-15 常熟市伟成非织造成套设备有限公司 具有压棉功能的铺网机
CN109825953A (zh) * 2019-03-14 2019-05-31 常熟市弘毅无纺机械有限公司 一种交叉铺网机
CN110760995A (zh) * 2019-11-13 2020-02-07 常熟万龙机械有限公司 一种铺网机
CN110670244A (zh) * 2019-11-20 2020-01-10 常熟市振泰无纺机械有限公司 高速铺网机
CN117947579A (zh) * 2024-03-27 2024-04-30 厦门当盛新材料有限公司 多单元组合式高速纺丝铺网机、铺网方法及闪蒸无纺布

Also Published As

Publication number Publication date
EP3141640C0 (de) 2024-04-17
FR3040400A1 (fr) 2017-03-03
FR3040400B1 (fr) 2018-06-15
EP3141640B1 (de) 2024-04-17
FR3040398A1 (fr) 2017-03-03
FR3040398B1 (fr) 2018-07-13

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Effective date: 20240524