EP4144904A1 - Nadelmaschine zum nadeln einer faserbahn oder eines faservlieses, insbesondere eines faservlieses - Google Patents
Nadelmaschine zum nadeln einer faserbahn oder eines faservlieses, insbesondere eines faservlieses Download PDFInfo
- Publication number
- EP4144904A1 EP4144904A1 EP22193309.6A EP22193309A EP4144904A1 EP 4144904 A1 EP4144904 A1 EP 4144904A1 EP 22193309 A EP22193309 A EP 22193309A EP 4144904 A1 EP4144904 A1 EP 4144904A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needles
- web
- board
- fiber dust
- movement
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H18/00—Needling machines
- D04H18/02—Needling machines with needles
Definitions
- the present invention relates to an installation forming a needle loom comprising a needle board, the needles of which move back and forth inside a sheet or a web of fibers, in particular nonwoven, passing in front of them, in view of or consolidate it.
- the present invention also relates to a method of operating an installation of this type.
- a needling machine comprising a needle board passing back and forth through a veil of fibers which move perpendicular to the needles between a pierced plate forming a support table and a pierced plate forming a stripper, the pierces being traversed by the needles.
- Fiber dust accumulates on one and/or the other of the two plates respectively forming a support table and a stripper which cause vibrations of the needling machine and means are provided for controlling the operation of the needling machine in real time .
- the present invention aims to overcome the drawbacks of the prior art by providing an installation forming a needling machine which makes it possible to increase the production rate of the consolidated sheet or web, in particular by avoiding untimely interruptions of the line.
- an installation forming a needling machine comprises a needle board comprising a field of needles and means for driving the needles in a to-and-fro movement, in particular in the vertical direction, so that the needles, in one direction of the movement, penetrate into a veil or a web of fibers, in particular a nonwoven, to cross it or it in a direction transverse, in particular perpendicular, to the direction in which the web or the web of fibers moves in front of the needles, then in a second direction of movement, emerge from the web or web of fibers, characterized in that a quantity of accumulated fiber dust is present on the board between the needles and there are provided means for monitoring the quantity of fiber dust accumulated on the board between the needles, in particular means for monitoring the thickness of the layer of fiber dust accumulated on the board between the needles, for example means for measuring the thickness of the layer fiber dust accumulated on the board between the needles.
- the inventors of the present invention have realized that long-term blockages of the line are often due to fiber dust which accumulates between the needles on the face of the board from which they protrude, this dust, by dint of accumulate, forming clusters which can cause the breakage of one or more components of the installation, which leads to the stoppage of the installation for long periods of time, for example when the needles cross a plate forming a stripper, come hitting the plate forming a stripper and subjecting it to excessive vibrations and/or deformations causing the breakage of the stripper, leading to a long-term blockage of the production line.
- the control system of the installation can intervene to clean the interstices on the board between the needles before a long-term blockage of the line occurs, and the flow rate and/or the speed of the needling line is thus greatly improved.
- the installation further comprises a plate forming a stripper which is pierced with a field of through holes and which is traversed by the needles before they penetrate into the web or the layer of fibers and the means for monitoring the quantity of accumulated fiber dust comprise means for monitoring, in particular for measuring, vibrations and/or deformations of the plate forming a stripper.
- the means for monitoring, in particular for measuring, the vibrations and/or the deformations of the plate forming the stripper comprise an accelerometer sensor, in particular disposed on the plate forming the stripper.
- the means for monitoring, in particular for measuring, the vibrations and/or the deformations of the plate forming the stripper comprise means for monitoring, in particular for measuring, the stresses exerted on the fixing points and/or supporting the plate forming a stripper.
- the movement of the hands takes place along a rectilinear trajectory.
- the movement of the hands takes place along an elliptical trajectory.
- alert means capable of giving the alert when the quantity of accumulated fiber dust monitored, in particular the thickness of the layer of accumulated fiber dust monitored, in particular measured, exceeds a determined threshold value in advance.
- the installation comprises a plate forming a stripper which is pierced with a field of through holes and which is traversed by the needles before they penetrate into the web or the web of fibers and the warning means give the alert when the difference between the vibrations and/or deformations monitored over time and the vibrations and/or deformations without load exceeds a threshold value determined in advance.
- the means for monitoring the vibrations and/or the deformations of the plate forming the stripper measure the deformations and/or vibrations in the vacuum of the plate forming the stripper, called reference vibration and/or deformation , corresponding to the case where no fiber dust is present between the needles, and comparison means are provided capable of comparing the vibrations and/or deformations of the plate forming a stripper measured by the monitoring means over time with the reference vibrations and/or deformations.
- means are provided for eliminating fiber dust on the board between the needles.
- control means in particular electronic, which actuate the warning means and/or the means for eliminating dust when it is detected that the quantity of fiber dust, in particular the thickness of the layer of fiber dust, exceeds a threshold value determined in advance, in particular when a variation in vibrations and/or deformations is detected of the plate forming a stripper, in particular when they exceed a threshold value.
- the monitoring means comprise a camera, in particular electronic, which monitors the quantity of fiber dust, in particular the thickness of the layer of dust, formed on the board between the needles.
- the monitoring means comprise a camera, in particular electronic, which monitors the deformations and/or vibrations of the plate forming a stripper.
- the implementation of the elimination means is carried out after having caused the operation of the installation to cease.
- the implementation of the disposal means takes place automatically, without stopping the operation of the installation.
- a needling installation comprises a board 1, from one underside of which protrude needles 2 arranged in a field of needles which conventionally is produced according to a so-called random or quasi-random pattern, the definition of random or quasi-random random being well known in the field.
- a vertical column 3 is integral with the needle board and transmits to the latter a reciprocating movement imparted to it by a connecting rod and crank system (not shown in the figures), the drive of the column 3 being achieved to the face so as to have a vertical back and forth movement.
- a different drive system could be provided, in particular ensuring that the needles have a movement along an elliptical trajectory, for example by providing additional drive means in a transverse direction giving the needles also a transverse displacement component. to thus achieve an elliptical trajectory of the needles.
- MD Machine Direction
- Support means in particular in the form of a support table 6, support the veil or the lap during its displacement, the support table 6 being able in particular to be pierced with holes in correspondence with the needles.
- a stripper plate 8 for example in the form of a sheet, pierced with through holes in a pattern corresponding to that of the needles, is placed between the board 1 with needles and the web or the web of fibers.
- the through holes of the stripper are in correspondence with the holes drilled in the table 6 support.
- the needles as is conventional in the field, have barbs.
- An accelerometer sensor 9 is arranged integral with plate 8 and makes it possible to measure the acceleration of plate 8 forming a stripper to thus determine the vibrations and/or deformations undergone by this plate.
- This accelerometer 9 is connected to an electronic control system 10 which makes it possible to display in particular the measurements made by the accelerometer 9.
- the electronic control system 10 includes storage means capable of storing the measurements of the accelerometer 9, in particular when no dust is present between the needles on the underside of the board.
- the electronic control system 10 further comprises comparison means capable of comparing the measurements of the sensor 9 over time and so-called reference measurements corresponding to the measurement taken by the sensor when no dust is present between the needles. on the underside of the board.
- the control system 10 may further comprise alert means capable of issuing an alert, for example sound, visual or the like, to the attention of the user when the difference obtained from the comparison means varies, in particular when it exceeds a pre-determined threshold.
- alert means capable of issuing an alert, for example sound, visual or the like, to the attention of the user when the difference obtained from the comparison means varies, in particular when it exceeds a pre-determined threshold.
- the user can intervene on the needle board to clean it, thus preventing a jam from causing the breakage of machine components, which is likely to cause recovery time. of the line for restarting it much longer than the time it takes to stop simply to get rid of the fiber dust.
- elimination means can be actuated by the user when an alert is issued. Provision can also be made for the control system 10 to trigger the elimination means when the difference value resulting from the comparison means varies, in particular exceeds a threshold value fixed in advance.
- FIG. 2 there is shown another embodiment according to the invention, in which means for fixing the plate 8 forming a stripper in the form of rods and/or bearings 12 are connected to strain gauges 13 which measure the forces applied in these fixing points of the plate forming a stripper.
- the strain gauges initially, measure the force applied when there is no dust on the underside of the board 1, then the force applied over time, and send their measurement to an electronic control system which carries out on these measurements the same processing as that carried out by the system 10 on the measurements carried out by the accelerometer in the first embodiment .
- comparison means, warning means and/or fiber dust elimination means as in the first embodiment.
- strain gauges and/or an accelerometer are used to determine the deformations and/or vibrations of the plate forming the stripper.
- a camera 15 records the vibrations and/or deformations of the plate 8 and sends them to the system 10, which according to the recorded values, and in particular their variation beyond a value threshold determined in advance, triggers an alert and/or triggers a procedure either manual for eliminating the accumulated dust, in particular by briefly stopping the line, or automatically by actuating means for eliminating the clumps of dust.
- a camera 16 records the thickness of the layer of dust which accumulates between the needles on the underside of the board and sends this information to the system 10, which, in the same way as in the other embodiments, when the value of the thickness varies beyond a threshold value, triggers either a manual procedure for eliminating the accumulated dust, in particular by briefly stopping the line, or automatically by activating dust removal means.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Nonwoven Fabrics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2109295A FR3126715B1 (fr) | 2021-09-06 | 2021-09-06 | Installation formant aiguilleteuse pour aiguilleter une nappe ou un voile de fibres, notamment non tissé |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4144904A1 true EP4144904A1 (de) | 2023-03-08 |
| EP4144904B1 EP4144904B1 (de) | 2025-07-23 |
| EP4144904C0 EP4144904C0 (de) | 2025-07-23 |
Family
ID=77913337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22193309.6A Active EP4144904B1 (de) | 2021-09-06 | 2022-08-31 | Nadelmaschine zum nadeln einer faserbahn oder eines faservlieses, insbesondere eines faservlieses |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4144904B1 (de) |
| FR (1) | FR3126715B1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240141572A1 (en) * | 2022-10-31 | 2024-05-02 | Rohr, Inc. | Systems and methods for spray cleaning needles for through thickness reinforcement of resin-infused fabrics |
| US12297572B2 (en) | 2022-10-31 | 2025-05-13 | Rohr, Inc. | Systems and methods for self-cleaning needles for through thickness reinforcement of resin-infused fabrics |
| US12404616B2 (en) | 2022-10-31 | 2025-09-02 | Rohr, Inc. | Systems and methods for robotic arm end effector for tailored through thickness reinforcement |
| US12589525B2 (en) | 2024-01-16 | 2026-03-31 | Goodrich Corporation | In-situ compaction during z-fiber reinforcement of dry fiber preforms |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1811072A1 (de) | 2006-01-20 | 2007-07-25 | Asselin-Thibeau | Verfahren und Vorrichtung zur Steuerung einer Nadelmaschine |
| EP1384804B1 (de) * | 2002-07-26 | 2007-10-24 | Asselin-Thibeau | Verfahren zur Begrenzung der Verschmutzung einer Nadelmachine mit fliegenden Fasern und Nadelmachine dafür |
-
2021
- 2021-09-06 FR FR2109295A patent/FR3126715B1/fr active Active
-
2022
- 2022-08-31 EP EP22193309.6A patent/EP4144904B1/de active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1384804B1 (de) * | 2002-07-26 | 2007-10-24 | Asselin-Thibeau | Verfahren zur Begrenzung der Verschmutzung einer Nadelmachine mit fliegenden Fasern und Nadelmachine dafür |
| EP1811072A1 (de) | 2006-01-20 | 2007-07-25 | Asselin-Thibeau | Verfahren und Vorrichtung zur Steuerung einer Nadelmaschine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240141572A1 (en) * | 2022-10-31 | 2024-05-02 | Rohr, Inc. | Systems and methods for spray cleaning needles for through thickness reinforcement of resin-infused fabrics |
| US12297571B2 (en) * | 2022-10-31 | 2025-05-13 | Rohr, Inc. | Systems and methods for spray cleaning needles for through thickness reinforcement of resin-infused fabrics |
| US12297572B2 (en) | 2022-10-31 | 2025-05-13 | Rohr, Inc. | Systems and methods for self-cleaning needles for through thickness reinforcement of resin-infused fabrics |
| US12404616B2 (en) | 2022-10-31 | 2025-09-02 | Rohr, Inc. | Systems and methods for robotic arm end effector for tailored through thickness reinforcement |
| US12589525B2 (en) | 2024-01-16 | 2026-03-31 | Goodrich Corporation | In-situ compaction during z-fiber reinforcement of dry fiber preforms |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4144904B1 (de) | 2025-07-23 |
| EP4144904C0 (de) | 2025-07-23 |
| FR3126715A1 (fr) | 2023-03-10 |
| FR3126715B1 (fr) | 2025-06-06 |
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