EP3862476B1 - Aiguilleteuse - Google Patents

Aiguilleteuse Download PDF

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Publication number
EP3862476B1
EP3862476B1 EP20156181.8A EP20156181A EP3862476B1 EP 3862476 B1 EP3862476 B1 EP 3862476B1 EP 20156181 A EP20156181 A EP 20156181A EP 3862476 B1 EP3862476 B1 EP 3862476B1
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EP
European Patent Office
Prior art keywords
shaft
main shaft
guide
guide element
shaft section
Prior art date
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Active
Application number
EP20156181.8A
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German (de)
English (en)
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EP3862476A1 (fr
Inventor
Joachim Leger
Wolfgang Schwab
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.)
Oskar Dilo Maschinenfabrik KG
Original Assignee
Oskar Dilo Maschinenfabrik KG
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Priority to EP20156181.8A priority Critical patent/EP3862476B1/fr
Publication of EP3862476A1 publication Critical patent/EP3862476A1/fr
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Publication of EP3862476B1 publication Critical patent/EP3862476B1/fr
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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 a needling machine for needling a fleece web, the needling machine comprising an adjustment device for adjusting the angular position of two main shafts of the needling machine relative to one another.
  • Needle looms are well known to those skilled in the art and can be found, for example, in Lünenscha and Albrecht: "Vliesstoffe”, Georg Thieme Verlag, Stuttgart 1982, pages 122 to 129 described.
  • a nonwoven In needling machines, a nonwoven is usually fed in at the inlet of the needling machine and conveyed in a conveying direction of the nonwoven web to a needling zone.
  • a needle zone In the area of the needle zone, there is at least one needle bar with a needle board attached to it, which is equipped with needles for strengthening the fleece.
  • the needles compress the nonwoven by being pierced into the nonwoven at high frequency in one direction and pulled out of it again.
  • the resulting product is a bonded fleece.
  • needling machines are known to those skilled in the art, including double-needle machines in which two needle bars are used for needling from above and below, or needling machines in which the needle bar is moved with the non-woven web in the conveying direction of the non-woven web during the bonding process.
  • needling machines include a drive device which causes the needle bar to lift in the direction of the puncture.
  • a drive device comprises, for example, two main shafts, on each of which a main connecting rod is mounted eccentrically, so that a rotational movement of the main shaft is converted into a lifting movement of the needle bar in the direction of piercing by means of the respective main connecting rod.
  • the main shafts can be coupled by a gear arrangement and preferably rotate in opposite directions of rotation. As a result, forces transverse to the puncture direction, which are caused by the eccentric movement of the main connecting rod, can be neutralized. Due to the coupling of the two main shafts by means of a gear arrangement, it is usually sufficient to drive one of the main shafts in rotation by means of a drive.
  • Needling machines in which the needle bar is to be moved during the bonding process in the conveying direction of the nonwoven web, also generally include an auxiliary drive or at least one horizontal guide.
  • an auxiliary drive or at least one horizontal guide By superimposing the lifting movement of the needle bar in the puncture direction, which is oriented essentially vertically, and the lifting movement of the needle bar in the conveying direction of the nonwoven web, which is oriented essentially horizontally, the needle bar is moved essentially on an elliptical path.
  • Such needle machines are, for example, from EP 0 982 102 A known. It is desirable to be able to adapt the stroke of the needle bar in the conveying direction of the nonwoven web to the requirements present in the individual case.
  • One possibility for adjustment consists in adjusting the phase position of the two main waves.
  • the needle beam produces an oscillating movement similar to an ellipse.
  • Examples of needling machines with a possibility of phase adjustment of the main shafts to one another are, for example, in DE 10 2005 012 265 A1 , EP 3 412 819 A1 or EP 1 736 587 A1 disclosed.
  • EP 1 736 587 A1 For example, in a first embodiment, a worm gear can be used to effect the phasing of the main shafts.
  • one of the two main shafts is separated from the drive motor by means of a clutch, so that the phase position of the other main shaft can be adjusted by the drive motor.
  • the present invention is therefore based on the object of providing a needling machine for needling a fleece web in which the phase position of the main shafts can be adjusted in a simple manner and can be integrated into the needling machine in a space-saving manner without great effort.
  • a needling machine for needling a nonwoven web comprises a needle bar arrangement which comprises at least one needle bar, a first main shaft and a second main shaft.
  • a first main connecting rod is mounted eccentrically on the first main shaft and connects the first main shaft in an articulated manner to the needle beam arrangement.
  • the first main shaft has a drive-side first shaft section and a connecting rod-side second shaft section separate from the first shaft section, the first and second shaft sections being arranged coaxially and rotatable relative to one another.
  • a second main connecting rod is mounted eccentrically on the second main shaft and connects the second main shaft in an articulated manner to the needle beam arrangement.
  • the needling machine includes a drive for rotationally driving one of the first and second main shafts and an adjustment device for adjusting the angular position of the first and second main shafts relative to one another.
  • the adjusting device connects the first and the second shaft section of the first main shaft to one another and is set up to transmit a rotational movement from the first to the second shaft section.
  • the adjusting device can be actuated in order to bring about a relative rotation between the first and the second shaft section.
  • a needling machine in which the phase angle or the angular position of the first and second main shafts relative to one another can be adjusted in a simple and space-saving manner.
  • the adjusting device provided for this purpose can be provided independently of the drive and a torque transmission (e.g. in the form of a gear arrangement) between the first and the second main shaft and is therefore of particularly simple construction and can be operated reliably.
  • the second shaft section can be rotated by the adjusting device with the first shaft section stationary and the second main shaft stationary, so that the angular position of the second shaft section and thus the first main shaft changes relative to the angular position of the second main shaft. It is also conceivable to rotate the first shaft section relative to the second shaft section and to transmit this rotation to the second main shaft, for example by means of a gear arrangement between the first and the second main shaft.
  • the needle bar arrangement includes one or more needle bars.
  • Each needle bar includes a multiplicity of needles for needling the nonwoven web.
  • the needles are preferably aligned essentially parallel to a puncture direction and are attached to a side of the needle bar that faces the nonwoven web to be needled.
  • the first and second main connecting rods are mounted in such a way that they convert a rotational movement of the first or second main shaft into a lifting movement of the at least one needle bar in the direction of piercing, as a result of which the needles are pierced into the nonwoven web and pulled out of it.
  • the first and the second main connecting rod are each rotatably mounted on the respective main shaft about a connecting axis.
  • the connecting axis is arranged parallel and spaced apart from an axis of rotation of the respective main shaft. This storage is comparable to a crankshaft.
  • the current position of the connection axis relative to the axis of rotation of the respective main shaft corresponds to the angular position or angular position of the respective main shaft.
  • the angular position is usually given in relation to a top or bottom dead center of the corresponding connecting rod. At bottom dead center, the movement of a connecting rod reverses from a downward movement (in the direction of the puncture) to an upward movement (opposite to the direction of the puncture). At top dead center, the movement of a connecting rod reverses from upwards to downwards.
  • first and the second main connecting rod take place in phase.
  • the first and the second main connecting rod pass through their respective top dead center and their respective bottom dead center at the same time. Due to the articulated connection to the needle bar arrangement, the latter is thereby moved up and down in the puncture direction, with the needle bar arrangement retaining its essentially horizontal orientation.
  • the first and the second main connecting rod are at different distances relative to their respective dead centers. Their movement is then no longer in phase.
  • the first and the second main connecting rod pass through their respective bottom and top dead center with a time offset.
  • the needle bar arrangement is thereby tilted with respect to the horizontal.
  • This tilting movement can be designed in such a way that, after penetrating the nonwoven web, the needles are also moved in the conveying direction of the nonwoven web. As a result, distortion of the nonwoven web caused by the needles and the load acting on the needles can be reduced.
  • a maximum tilting movement occurs when one of the two main shafts is at top dead center and the other of the two main shafts is at bottom dead center at this time.
  • first shaft section and the second shaft section of the first main shaft are designed separately from one another, they are two separate shafts which are arranged coaxially to one another and are connected to one another by additional means in such a way that during operation of the needle machine a torque is transmitted from the first shaft section to the second shaft section is transmitted and together they form the first main shaft.
  • the "drive side" first shaft section is arranged closer to the drive than the second shaft section in the axial direction of the first main shaft.
  • the rotary movement of the first main shaft is introduced into the first shaft section.
  • the first shaft section is preferably connected directly to the drive and/or to the second main shaft for transmitting a torque to the first shaft section, e.g. by means of a gear arrangement.
  • the second shaft section "on the connecting rod side” is arranged closer to the first main connecting rod in the axial direction than the first shaft section.
  • the first main connecting rod is preferably rotatably mounted on the second shaft section or on a further shaft section fixed to it. Relative rotation of the second shaft section is transmitted to the first main connecting rod to change its position relative to the second main connecting rod.
  • the first and second shaft sections are connected to one another by the adjusting device, preferably connected to one another in a rotationally fixed manner.
  • the adjusting device is designed in such a way that, during operation of the needle machine and without actuation of the adjusting device, it generates a torque or a rotational movement from the first to the second Shaft section transmits.
  • a relative rotation between the first and the second shaft section or a conversion of the torque or the speed preferably does not take place if the adjusting device is not actuated.
  • the adjusting device can be actuated in such a way that it causes a relative rotation between the first and the second shaft section.
  • the fact that the adjustment device can be actuated means that components of the adjustment device can be moved relative to one another in response to an externally applied force that is independent of the rotational movement of the first main shaft. By actuating the adjustment device, the relative rotation between the first and the second shaft section is initiated.
  • the adjusting device can preferably be actuated by an adjusting movement or adjusting force exerted on the adjusting device from the outside.
  • the adjusting device can preferably be adjusted between a number of states by actuation, with each state corresponding to a defined angular position of the second and/or first shaft section or the difference between two states corresponding to a defined change in the angular position.
  • the adjusting device is continuously adjustable, so the states of the adjusting device merge into one another in a continuously variable manner.
  • first and second main shafts are set relative to one another, there is preferably no further relative rotation between the first and second shaft sections during operation of the needling machine. Relative rotation between the first and second shaft sections is effected only to adjust the angular position of the first and second main shafts.
  • the adjustment device is preferably actuated in a targeted manner by the user, for example by means of a control device.
  • the adjusting device is formed on an output side of the gear arrangement, while the drive is preferably provided on an input side of the gear arrangement.
  • the transmission arrangement may have an input shaft connected to the drive and corresponding to the second main shaft or the first shaft section of the first main shaft.
  • the components of the adjusting device are preferably mounted in a fixed position in the axial direction during operation of the needle machine and can only be moved in the axial direction by actuating the actuating drive or the adjusting device.
  • the helical guide of the first guide member extends along the first guide member in the form of a helix or cylindrical spiral.
  • a spiral or helix has a constant pitch.
  • it can also have a non-constant gradient.
  • the first guide element is preferably designed as a solid shaft or as a hollow shaft, which has a spiral-shaped groove in a peripheral surface that forms the spiral-shaped guide.
  • the first guide element can also be designed as a hollow shaft and have the spiral-shaped groove on an inner peripheral surface, the first engagement element then being arranged radially inside the first guide element and the engagement means being directed radially outwards.
  • the first guide element is at least partially designed as a hollow shaft and has spiral-shaped internal teeth on an inner peripheral surface.
  • the first engagement element is designed as a shaft which has a corresponding external toothing on an outer peripheral surface.
  • the first engagement element is at least partially arranged radially inside the first guide element, so that the external and internal teeth are in engagement with each other. It goes without saying that the guide element and the engagement element can also be arranged in reverse, the engagement element then having internal teeth and the guide element having spiral-shaped external teeth.
  • the adjustment device further comprises a second guide element with a linear guide and a second engagement element which engages in the linear guide of the second guide element and can be displaced along the linear guide.
  • One of the second guide element and second engagement element is firmly connected or formed integrally with the other of the first and second shaft sections (i.e. with the shaft section that is not firmly connected to the first guide or engagement element), and the other is made up of the second guide element and second engagement element movable in the axial direction of the first main shaft.
  • the linear guide preferably runs in the axial direction of the first main shaft.
  • One of the second guide member and the second engaging member is fixed in the axial direction of the first main shaft, while the other of the second guide member and the second engaging member is movable in the axial direction.
  • an axial Displacement of part of the adjusting device for generating the relative rotation, in particular of the first guide element or the first engagement element, can be absorbed by a relative movement between the second guide element and the second engagement element and is not transmitted to the first and second shaft sections.
  • one of the first guide member and the first engagement member is coupled to the drive-side first shaft portion, and one of the second guide member and the second engagement member is coupled to the connecting rod-side second shaft portion.
  • the elements of the first guide element, first engagement element, second guide element and second engagement element that are not coupled to the first or second shaft section are firmly connected to one another both in the circumferential direction and in the axial direction.
  • the first engagement member is coupled to the first shaft portion and the second guide member is coupled to the second shaft portion.
  • the first guide member and the second engaging member are non-rotatably connected to each other and fixed to each other in the axial direction.
  • the first engagement element and the second guide element are fixed in the axial direction, preferably directly on the first and second shaft section, respectively.
  • An axial displacement of the first guide element causes the first guide element to rotate relative to the preferably stationary first engagement element. This rotational movement is transmitted from the first guide element via the second engagement element to the second guide element and thus to the second shaft section.
  • axial displacement of the first guide member may cause circumferential rotation of the first engagement member and is accommodated by axial displacement of the second engagement member relative to the second guide member. The rotation of the first engagement member is then transmitted to the first shaft portion.
  • first and the second guide element are formed integrally.
  • a (hollow) shaft can be provided, the inner and/or outer peripheral surface of which has both the helical guide of the first guide element and the linear guide of the second guide element.
  • the spiral guide and the linear guide are then preferably formed in the same peripheral surface of the shaft and spaced apart from one another in the axial direction of the hollow shaft.
  • one of linear and spiral guides may be formed in the inner peripheral surface and the other guide may be formed in the outer peripheral surface.
  • the needling machine also includes an actuator and the adjustment device includes a sleeve that is movable in the axial direction of the first main shaft and is coupled to the actuator in such a way that a translational actuating movement of the actuator is transmitted to the sleeve and this at least partially in the axial direction moves.
  • the sleeve is coupled to that of the first guide element and the first engagement element, which is movable in the axial direction of the first main shaft in order to initiate the axial adjustment movement in the adjusting device and to transmit it to the respective first guide element and first engagement element.
  • the actuator is preferably designed as a linear drive, for example as a hydraulic or pneumatic cylinder arrangement, as a threaded rod drive or as an electromechanical linear drive.
  • the needling machine preferably comprises a control device, such as a computer or microcontroller, for controlling the actuator.
  • the control device is preferably set up to receive data from an input device that can be operated by a user. This allows the user to specify a desired phase adjustment via the input device, e.g. by specifying the absolute angular position of the first and/or second main shaft, by specifying the change in the angular position of the first and/or second main shaft or by specifying a phase or angular position difference between the first and second main shaft.
  • the control device then actuates the actuator or the adjustment device according to the user's specification.
  • the sleeve is rotatably supported relative to the first guide member and the first engaging member and fixed in the axial direction relative to that of the first guide member and the first engaging member which is movable in the axial direction.
  • This makes it possible to transfer the linear adjustment movement from the sleeve to the corresponding first guide element and first engagement element, but at the same time to prevent a rotary movement of the first and second shaft sections from being transferred to the sleeve during operation of the needling machine. Consequently, the sleeve can be easily stored in the machine frame of the needling machine and can be connected to the actuator in a mechanically simple manner.
  • the needling of the non-woven web takes place by moving the needle bar arrangement in the puncture direction.
  • the actuation of the adjusting device is carried out selectively and exclusively to adjust the angular position of the first main shaft relative to the second main shaft.
  • the needle bar arrangement is preferably moved in sections in the conveying direction of the fleece web.
  • the method then includes the additional step: moving the needle bar assembly in a nonwoven web conveying direction oriented in a second direction perpendicular to the first direction and perpendicular to the axial direction of the first and second main shafts.
  • the initiation of the adjusting movement in the adjusting device particularly preferably includes the linear displacement of the first guide element in the axial direction of the first main shaft and the resulting rotation of the first engagement element relative to the first guide element.
  • the needling machine 2 comprises a needle bar arrangement 4 with at least one needle bar 6.
  • Each needle bar 6 carries a multiplicity of needles 8 for needling a fleece web, of which two needles 8 per needle bar 6 are shown as an example.
  • a fleece web (not shown) is moved under the needle bar arrangement 4 in a conveying direction F. While the non-woven web is moved under the needle bar arrangement 4, the needle bar arrangement 4 is moved up and down in a direction E of the needles 8 puncturing.
  • the piercing direction E extends perpendicularly to the plane of the fleece web and essentially parallel to the longitudinal direction of the needles 8.
  • the needles 8 penetrate the fleece web, preferably penetrate it completely and are pulled out of the fleece web again.
  • the needling machine 2 comprises a drive arrangement 10 which is designed as a crank mechanism.
  • the needling machine 2 comprises a first main shaft 12 which is connected to the needle bar arrangement 4 by means of a first main connecting rod 14 .
  • the first main connecting rod 14 is mounted eccentrically on the first main shaft 12 and is connected to the needle beam arrangement 4 in an articulated manner.
  • the needling machine 2 comprises a second main shaft 16 which is connected to the needle bar arrangement 4 by means of a second main connecting rod 18 .
  • the second main connecting rod 18 is mounted eccentrically on the second main shaft 16 and is connected to the needle beam arrangement 4 in an articulated manner.
  • the first and second main connecting rods 14, 18 are each rotatable about a connecting axis 14a, 18a on the respective main shaft 12, 16 stored.
  • the connecting axes 14a, 18a are parallel and spaced apart from the axis of rotation of the respective main shaft 12, 16. Due to the eccentric mounting of the first and the second main connecting rod 14, 18, a rotary movement of the first and the second main shaft 12, 16 is converted into a lifting movement of the needle bar arrangement 4 converted to puncture direction E.
  • the needling machine 2 preferably includes a gear assembly 30.
  • the gear assembly 30 includes at least one gear stage for transmitting a rotary motion or a Torque between the main shafts 12, 16.
  • the gear assembly 30 is designed as a spur gear.
  • the transmission assembly 30 preferably includes an input shaft 32 and two output shafts 34, 36, with the first main shaft 12 and the second main shaft 16 being the two output shafts 34, 36 form.
  • the drive 28 drives the input shaft 32 in rotation.
  • the first main shaft 12 also forms the input shaft 32.
  • the needling machine 2 comprises an adjusting device 38, which is based on the Figures 2 to 4 is explained in more detail.
  • the 2 and 3 show a detail of a needling machine 2 with an adjustment device 38 according to a first embodiment.
  • first and second main shafts 12, 16 can be seen. Both main shafts 12, 16 can be composed of several shaft sections.
  • the first main shaft 12 comprises a first shaft section 40 on the drive side and a second shaft section 42 on the connecting rod side, which is separate from the first shaft section 40.
  • the first and second shaft sections 40, 42 are arranged coaxially to the (rotational) axis 44 of the first main shaft 12.
  • the first shaft section 40 faces the drive 28 .
  • the first shaft section 40 can be connected directly to the drive 28 and/or can be connected in a torque-proof manner to a component of the transmission arrangement 30 .
  • the second shaft section 42 faces the first main connecting rod 14 .
  • a rotational movement initiated by the drive 28 is transmitted to the second shaft section 42 via the first shaft section 40 and the adjusting device 38 . If the adjusting device 38 is not actively actuated, it transmits a rotational movement from the first to the second shaft section 40, 42 essentially unchanged. In this state, the adjusting device 38 establishes a non-rotatable connection between the first and the second shaft section 40, 42.
  • the adjustment device 38 can also be used the other way around, so that in the 2 and 3 the first shaft section 40 and the second shaft section 42 are to be exchanged.
  • first guide element 46 and the first engagement element 48 is non-rotatably connected to the first shaft section 40 and the other of the first guide element 46 and first engagement element 48 is non-rotatably connected to the second shaft section 42 .
  • the first shaft section 40 is in turn connected to the second main shaft 16 via the transmission arrangement 30 .
  • a relative rotation between the first guide element 46 and the first engagement element 48 thus causes a relative rotation between the first and the second shaft section 40, 42 and thereby in turn a relative rotation between the second shaft section 42 of the first main shaft 12 and the second main shaft 16.
  • the first engagement element 48 is firmly connected to the first shaft section 40 , in particular fixed to the first shaft section 40 both in the axial direction and in the circumferential direction with respect to the axis 44 .
  • the first guide element 46 is movably mounted in the axial direction of the axis 44 .
  • the adjusting device 38 preferably comprises a second guide element 52 with one or more linear guides 56 and a second engaging element 54 which engages with the linear guides 56.
  • the second guide element 52 and the second engagement element 54 are thus engaged with one another in such a way that they can be displaced relative to one another in the axial direction with respect to the axis 44 and are non-rotatably connected to one another in the circumferential direction for the transmission of a rotary movement or torque.
  • a relative rotation between the second guide element 52 and the second engagement element 54 is not possible.
  • the second guide element 52 is fixed with respect to the second shaft section 42 both in the axial direction and in the circumferential direction and is firmly connected to the second shaft section 42 .
  • the second engagement member 54 is slidable in the axial direction relative to the second shaft portion 42 and fixedly connected to the first guide member 46 .
  • the axially movable elements consisting of the first guide element 46, the first engagement element 48, the second guide element 52 and the second engagement element 54, which are firmly connected to one another in the axial direction and in the circumferential direction and are axially movable, i.e. here the first guide element 46 and the second engagement element 54, can be formed integrally with one another or as separate components may be formed, which are connected to each other accordingly.
  • a third shaft section 58 is provided, which is connected, in particular screwed, to the second engagement element 54 at one end on the connecting rod side, and is connected, in particular screwed, to the first guide element 46 at an opposite, drive-side end.
  • Various shaft-hub connections can be used to connect the components directly or indirectly and are known to those skilled in the art.
  • first guide element 46 and/or the second guide element 52 can have external teeth and the first engagement element 48 or the second engagement element 54 can have internal teeth accordingly.
  • the adjustment device 38 In order to adjust the angular position or the phase of the second shaft section 42 of the first main shaft 12 relative to the second main shaft 16, the adjustment device 38 must be actuated. This is done by initiating a translational adjusting movement, preferably parallel to the axis 44, in the adjusting device 38.
  • the needling machine 2 comprises an adjusting drive 60 ( 2 ).
  • the actuator 60 is coupled to the axially movable components or elements of the adjustment device 38 .
  • the adjusting device 38 comprises a sleeve 62 which is movable in the axial direction of the first main shaft 12 and is coupled to the actuator 60 and to the axially movable components or elements of the adjusting device 38 for transmitting an actuating movement.
  • the sleeve 62 also decouples a rotary motion of the first main shaft 12 from the actuator 60 when the needle machine 2 is in operation.
  • the sleeve 62 is mounted on the third shaft section 58 by means of a suitable roller bearing 64 .
  • the roller bearing 64 enables relative rotation between the third shaft section 58 and the sleeve 62 and is designed in such a way that it transmits a movement of the sleeve 62 in the axial direction of the axis 44 to the third shaft section 58 .
  • the sleeve 62 could also be mounted on one of the axially movable components, in particular on the first guide element 46 or the second engagement element 54 , independently of the third shaft section 58 .
  • the actuator 60 can attack the sleeve 62 directly. However, the actuating movement can also be transmitted via additional elements from the actuating drive 60 to the sleeve 62, e.g. if this is necessary for reasons of space or serves to uniformly introduce force into or load the sleeve 62 and the roller bearing 64.
  • a fork 66 is therefore provided in the exemplary embodiment, which is coupled to the actuator 60 and the sleeve 62 . More specifically, one end 66a of fork 66 is pivotally connected to a movable component of actuator 60, such as an end of a piston rod of a cylinder assembly.
  • the fork 66 is connected to the sleeve 62, preferably articulated.
  • the fork 66 surrounds the rotating components of the adjusting device 38 or the first main shaft 12 and thereby forms an essentially ring-shaped receptacle which is connected to the sleeve 62 in at least two connecting sections 67 .
  • the connecting sections 67 are preferably evenly distributed in the circumferential direction.
  • the fork 66 is preferably articulated in the machine frame.
  • a corresponding bearing point 68 is in 2 to see.
  • the fork 66 can only extend between the end 66a on the actuator 60 and the connecting sections 67 and end there. The fork then does not completely surround the first main shaft 12 .
  • the actuating movement in the axial direction of the first main shaft 12 is preferably transmitted from the fork 66 to the sleeve 62 via at least one web 70 .
  • the fork 66 is preferably connected to the sleeve 62 by means of a plurality of webs 70, 70a, the webs 70, 70a being distributed uniformly along the circumference of the sleeve 62.
  • the webs 70, 70a are preferably attached to the connecting sections 67 of the fork 66 in an articulated manner.
  • the web 70 is articulated, in particular pivotable, both with the fork 66 and with the sleeve 62, tied together.
  • the web 70a is only articulated to the fork 67, while it is fixed to the sleeve 62, for example screwed twice, in order to obtain a statically determined system.
  • the adjusting device 38 comprises a first guide element 46 with a spiral guide 50 and a first engagement element 48 which engages in the spiral guide 50 of the first guide element 46 by means of suitable engagement means 49 and can be displaced along the spiral guide 50 .
  • the first guide element 46 can also be arranged radially inside the first engagement element 48 .
  • the first guide element 46 then has corresponding grooves on an outer peripheral surface and the first engagement element 48 has corresponding engagement means 49 which extend radially inwards and engage in these grooves.
  • an axial displacement of the first guide element 46 and the first engagement element 48 relative to one another due to the spiral guide 50 simultaneously causes a relative rotation between the first guide element 46 and the first engagement element 48.
  • the linear guide 56 of the second guide element 52 is formed by a groove running parallel to the axial direction of the axis 44 .
  • the second engagement element 54 comprises a corresponding number of engagement means 55, which are aligned in the radial direction with respect to the axis 44 and can be designed as pins.
  • Each engagement means 55 engages in a groove of the second guide element 52 .
  • the second guide element 52 and the second engagement element 54 thus engage in one another in such a way that they can be displaced relative to one another in the axial direction with respect to the axis 44 in order to accommodate an axial adjustment movement in the adjustment device 38 and not on the first and second shaft sections 40, 42 transferred to.
  • the second guide element 52 and the second engagement element 54 are connected to one another in a rotationally fixed manner in the circumferential direction.
  • the actuating movement is initiated via the sleeve 62.
  • the sleeve 62 can move in the axial direction of the first main shaft 12, is coupled to the actuating drive 60 and is coupled relative to the components of the adjusting device 38 or the first rotating during operation of the needling machine 2 Main shaft 12 rotatably mounted.
  • the sleeve 62 of the first embodiment can also be designed analogously to the second embodiment and can be connected to the actuator 60 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Claims (13)

  1. Machine à aiguilleter (2) pour aiguilleter une bande de non-tissé comprenant :
    un ensemble (4) de barre à aiguilles comprenant au moins une barre à aiguilles (6) ;
    un premier arbre principal (12) sur lequel est montée de manière excentrique une première bielle principale (14) qui relie de manière articulée le premier arbre principal (12) à l'ensemble (4) de barre à aiguilles, le premier arbre principal (12) comprenant une première partie d'arbre (40) du côté de l'entraînement et une deuxième partie d'arbre (42) du côté de la bielle séparée de la première partie d'arbre (40), les première et deuxième parties d'arbre (40, 42) étant coaxiales et étant aptes à tourner l'une par rapport à l'autre ; et
    un deuxième arbre principal (16) sur lequel est montée de manière excentrique une deuxième bielle principale (18) qui relie de manière articulée le deuxième arbre principal (16) à l'ensemble (4) de barre à aiguilles ;
    un système d'entraînement (28) pour entraîner en rotation l'un des premier et deuxième arbres principaux (12, 16) ; et
    un dispositif de réglage (38) pour régler la position angulaire des premier et deuxième arbres principaux (12, 16) l'un par rapport à l'autre, le dispositif de réglage (38) reliant les première et deuxième parties d'arbre (40, 42) du premier arbre principal (12) l'une à l'autre et étant agencé pour transmettre un mouvement de rotation de la première partie à la deuxième partie d'arbre (40, 42) et étant apte à être actionné de façon à provoquer une rotation relative entre les première et deuxième parties d'arbre (40, 42) ;
    caractérisé en ce que
    le dispositif de réglage (38) est apte à être déplacé axialement, au moins partiellement, par rapport à la première et/ou à la deuxième parties d'arbre (40, 42), et
    le dispositif de réglage (38) est conçu de telle sorte qu'un mouvement de réglage en translation de composants du dispositif de réglage (38) provoque une rotation relative entre la première et la deuxième parties d'arbre (40, 42) .
  2. Machine à aiguilles (2) selon la revendication 1, caractérisée en ce qu'elle comprend en outre un ensemble de transmission (30) pour transmettre un mouvement de rotation entre la première partie d'arbre (40) du premier arbre principal (12) et le deuxième arbre principal (16), la première partie d'arbre (40) du premier arbre principal (12) et le deuxième arbre principal (16) formant des arbres de sortie de l'ensemble de transmission (30).
  3. Machine à aiguilles (2) selon la revendication 1 ou 2, caractérisée en ce que la première et la deuxième parties d'arbre (40, 42) sont fixes dans la direction axiale.
  4. Machine à aiguilles (2) selon l'une des revendications précédentes, caractérisée en ce que le dispositif de réglage (38) comprend un premier élément de guidage (46) avec un guide hélicoïdal (50) et un premier élément d'engagement (48) qui est en engagement dans le guide hélicoïdal (50) du premier élément de guidage (46) et qui est apte à coulisser le long du guide hélicoïdal (50) ;
    l'un parmi le premier élément de guidage (46) et le premier élément d'engagement (48) étant conçu de façon à être relié de manière fixe à l'une des première et deuxième parties d'arbre (40, 42) ou pour former corps avec celle-ci ; et
    l'autre parmi le premier élément de guidage (46) et le premier élément d'engagement (48) étant mobile dans la direction axiale du premier arbre principal (12) pour recevoir le mouvement de réglage en translation.
  5. Machine à aiguilles (2) selon la revendication 4, caractérisée en ce que le premier élément de guidage (46) se présente sous la forme d'un arbre plein ou d'un arbre creux qui présente dans une surface périphérique une rainure en forme de spirale qui forme le guide hélicoïdal (50) .
  6. Machine à aiguilles (2) selon la revendication 4, caractérisée en ce que le premier élément de guidage (46) et le premier élément d'engagement (48) sont réalisés sous la forme d'une liaison à denture hélicoïdale.
  7. Machine à aiguilles (2) selon l'une des revendications 4 à 6, caractérisée en ce que le dispositif de réglage (38) comprend un deuxième élément de guidage (52) à guidage linéaire (56) et un deuxième élément d'engagement (54) qui s'engage dans le guidage linéaire (56) du deuxième élément de guidage (52) et qui est apte à être déplacé le long du guidage linéaire (52) ; l'un parmi le deuxième élément de guidage (52) et le deuxième élément d'engagement (54) étant relié de manière fixe et solidaire à l'autre parmi les première et deuxième parties d'arbre (40, 42) ; et
    l'autre parmi le deuxième élément de guidage (52) et le deuxième élément d'engagement (54) étant mobile dans la direction axiale du premier arbre principal (12).
  8. Machine à aiguilles (2) selon la revendication 7, caractérisée en ce que le deuxième élément de guidage (52) est sous forme d'un arbre plein ou d'un arbre creux qui présente dans une surface périphérique une rainure linéaire qui forme le guide linéaire (56).
  9. Machine à aiguilles (2) selon la revendication 7, caractérisée en ce que le deuxième élément de guidage (52) et le deuxième élément d'engagement (54) sont conçus sous la forme d'une liaison linéaire à dents.
  10. Machine à aiguilles (2) selon l'une quelconque des revendications 7 à 9, caractérisée en ce que le premier et le deuxième éléments de guidage (46, 52) sont formés d'un seul tenant.
  11. Machine à aiguilles (2) selon l'une des revendications 4 à 10, caractérisée en ce que la machine à aiguilles (2) comprend un actionneur (60) et le dispositif de réglage (38) comprend un manchon (62),
    ledit manchon (62) étant mobile dans la direction axiale du premier arbre principal (12), étant relié à l'actionneur (60) de telle sorte qu'un mouvement de réglage en translation de l'actionneur (60) est transmis au manchon (62), et étant relié à celui parmi le premier élément de guidage (46) et le premier élément d'engagement (48) qui est mobile dans la direction axiale du premier arbre principal (12) afin d'induire un mouvement de réglage axial dans le dispositif de réglage (38) ; et
    l'actionneur (60) étant conçu pour déplacer le manchon (62) dans la direction axiale.
  12. Machine à aiguilles (2) selon la revendication 11, caractérisée en ce que le manchon (62) est supporté de manière rotative par rapport au premier élément de guidage (46) et au premier élément d'engagement (48) et est fixé dans la direction axiale par rapport à celui parmi le premier élément de guidage (46) et le premier élément d'engagement (48) qui est mobile dans la direction axiale.
  13. Procédé d'aiguilletage d'une bande de non-tissé avec une machine à aiguilles (2) selon l'une des revendications précédentes, comprenant les étapes suivantes :
    le déplacement de l'ensemble (4) de barre à aiguilles dans une direction de piquage (E) orientée dans une première direction perpendiculaire à la direction axiale des premier et deuxième arbres principaux (12, 16) ; et
    l'actionnement du dispositif de réglage (38) et faire ainsi tourner les première et deuxième parties d'arbre (40, 42) l'une par rapport à l'autre de façon à régler la position angulaire du premier arbre principal (12) par rapport au deuxième arbre principal (16) ;
    l'actionnement du dispositif de réglage (38) comprenant :
    l'introduction d'un mouvement de réglage dans le dispositif de réglage (38) dans une direction axiale du premier arbre principal (12) ;
    la rotation de la première et de la deuxième parties d'arbre (40, 42) l'une par rapport à l'autre grâce à l'action de réglage résultant du mouvement de réglage initié.
EP20156181.8A 2020-02-07 2020-02-07 Aiguilleteuse Active EP3862476B1 (fr)

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EP3862476B1 true EP3862476B1 (fr) 2023-08-16

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29815426U1 (de) 1998-08-27 1998-12-17 Amin Bakry Christoph Handwerkzeug mit Beleuchtung
AT411468B (de) * 2001-09-06 2004-01-26 Fehrer Textilmasch Vorrichtung zum nadeln eines vlieses
AT413387B (de) 2004-03-31 2006-02-15 Fehrer Textilmasch Vorrichtung zum nadeln eines vlieses
FR2887564B1 (fr) * 2005-06-22 2007-10-26 Asselin Soc Par Actions Simpli Appareil d'aiguilletage pour consolider une nappe de fibres
US8495805B2 (en) * 2008-04-17 2013-07-30 Hi Tech Textile Holding Gmbh Apparatus for needling a fibrous web
EP3412819B1 (fr) 2017-06-08 2019-12-25 Oskar Dilo Maschinenfabrik KG Aiguilleteuse

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