EP0334948B1 - Übertragungsvorrichtung und verdichtungs- und einlassvorrichtung für eine nadelmaschine - Google Patents
Übertragungsvorrichtung und verdichtungs- und einlassvorrichtung für eine nadelmaschine Download PDFInfo
- Publication number
- EP0334948B1 EP0334948B1 EP88909558A EP88909558A EP0334948B1 EP 0334948 B1 EP0334948 B1 EP 0334948B1 EP 88909558 A EP88909558 A EP 88909558A EP 88909558 A EP88909558 A EP 88909558A EP 0334948 B1 EP0334948 B1 EP 0334948B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transport
- roller
- flexible
- noses
- run
- 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.)
- Expired - Lifetime
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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 a transfer device for the entry of a needling machine.
- the present invention also relates, for a needling machine, to a compression and introduction device which comprises two such transfer devices.
- the sheet is passed between two rollers.
- the path from the rollers to the needling passage of the needling machine takes place between two rows of teeth flexible obliques.
- FR-A-2 265 896 illustrates this technology.
- this compression and introduction device fulfills its role only imperfectly.
- the fibers are not routed positively in the needling passage. They do this after being partially re-expanded. Fibers manage to escape between the exit of the rollers and the entry into the needling passage.
- the object of the invention is to provide a transfer device, as well as a compression and introduction device, which overcomes these drawbacks.
- the transfer device intended to be part of a compression and introduction device at the entrance of a needle loom and comprising a roller and an endless flexible means of transport is characterized in that the endless flexible means of transport has a transport path between an upstream end where the flexible means of transport bypasses the roller and a downstream end where the flexible means of transport bypasses at least one spout, differential spacing means being provided for adjusting at different values at different points the width of the device the distance between the axis of the roller and the downstream end of the transport path.
- the flexible means of transport can positively drive the tablecloth over a certain distance.
- the downstream end of the transport path can be very close to the entrance to the needling passage. Indeed, at this end, the means of transport bypasses spouts, which allows it to deliver the transported product with great precision.
- the differential spacing means remedy the problems usually posed by conveyor belts whose developed length is small relative to the width.
- the invention is based on the surprising observation that it is possible to properly guide a carpet of relatively short length compared to its width provided that it acts on the distance between the axis of the roller and the downstream end of the transport path. , and this in a differentiated manner at different points of the width of the flexible means.
- This mode of stabilization of the flexible means is based on the assumption that the positioning instabilities of a flexible means whose width is large relative to its length are due to differences in length developed at different points of the width of the mat.
- This assumption leads to seeking to laterally stabilize the carpet by compensating for said deviations, for example by equalizing the tensions at different points of the width, and / or by deliberately creating the conditions for an appropriate deviation in order to laterally move the flexible means in the opposite direction to that of an error noted on the lateral positioning of the belt.
- the compression and insertion device for a needling machine comprises two transfer devices of the kind set out above, mounted so that their transport routes are facing each other.
- a needling machine comprises an upper table 1 and a lower table 2 defining between them a substantially horizontal needling passage in which a product 3 is advanced which, entering the state of a web formed of fibers little or not linked together, leaves in the state of needled carpet 4.
- a needle board 6 is connected to a reciprocating movement mechanism 7 so that needles 8 carried by the board 6 enter the needling passage through appropriate orifices of the table 1, and exit from said passage, at a determined frequency. In known manner, this intersects the fibers of the ply and gives cohesion and mechanical strength to the carpet obtained.
- the machine Upstream of the needling passage, the machine comprises a compression and introduction device 9, the role of which is to precompress the ply 3 while bringing it with the least possible losses inside the needling passage.
- the compression and introduction device 9 comprises an upper transfer device 11a and a substantially identical lower transfer device 11b.
- the transfer device 11b is described below.
- the transfer device 11b comprises a roller 12 located at the upstream end of the device.
- the roller 12 rotates an endless flexible transport means 13, in this case a belt extending over the entire working width of the needling machine.
- the carpet is made of polyester fabric coated with polyvinyl chloride or polyurethane. It is a carpet with a single thickness of canvas. The total thickness of the mat is less than 1 mm.
- the belt 13 has a transport path 13a extending between an upstream end where it bypasses the roller 12, and a downstream end where it bypasses a row of spouts 14 aligned in a direction substantially parallel to the axis 16 of the roller 12.
- Each spout 14 has the general shape of a prism whose side faces are parallel to the axis 16 of the roller 12.
- the base faces of each prism are adjacent to the base faces neighboring prisms.
- the dimension of each beak 14, measured parallel to the axis 16 is of the order of for example 100 mm.
- each spout 14 has a width of 98 mm, the distance between the spouts being 2 mm.
- the belt 13 bypasses the edge 17 of each spout 14 which is opposite the roller 12.
- the edge 17 is cylindrical chamfered. Its radius of curvature r ( Figure 5) is for example 4 mm.
- the edge 17 is adjacent to two flat faces 18 and 19 on which the belt 13 is supported along its transport path 13a and respectively along its path 13b back to the roller 12.
- the faces 18 and 19 converge towards edge 17 at an angle which is of the order of 25 °.
- each spout 14 has in its rear face 21, opposite the edge 17, two parallel bores 22 in which plungers 23 are slidably engaged.
- a helical compression spring 24 is interposed between the bottom of the bore 22 and the free end of the associated plunger 23, so as to urge the spout 14 in the direction opposite to the roller 12 , as just said.
- the plungers 23, all cylindrical, parallel to each other, and aligned in a plane passing through the axis of the roller 12 and through the edge 17, are rigidly carried by a support 26 disposed between the roller 12 and the spouts 14 and between the transport paths 13a and return 13b of the carpet 13.
- the support 26 has two opposite faces 26a and 26b slidingly supporting the carpet 13 along its transport paths 13a and respectively return 13b.
- the transfer device 11b also comprises two lateral support plates 27 situated on either side of the mat 13 and to which the support 26 is fixed by screws 28 (figure 2).
- Each end plate 27 also supports one of the bearings 29 of the roller 12 with the possibility of sliding along the oblique plane passing through the axis of the roller and through the edge 17 of the spouts 14, 14a.
- the bearings 29 bear against a screw 31 for adjusting the tension of the belt 13.
- the screw 31 is screwed into an ear 32 secured to the respective plate 27.
- the screw 31 of the upper roller pushes the upper roller away from the spouts 14, against the weight of the roller.
- the lower screw 31 pushes the lower roller towards the spouts 14 because the force resulting from the weight of the roller is excessive relative to the tension desired for the carpet.
- each end spout 14a has on its edge opposite the other spouts a rim 33 for guiding the belt 13.
- the transfer devices; 11a and 11b are arranged one above the other with the transport paths 13a of their respective belts 13 located opposite one another.
- the transport path 13a of the upper device 11a corresponds to the lower path of the associated carpet 13
- the transport path 13a of the lower transfer device 11b corresponds to the upper path of the associated carpet 13.
- the transport paths 13a of the two belts converge from the rollers 12 towards the spouts 14.
- the distance between the paths 13a can be 120 to 180 mm in line with the rollers 12, to be reduced to approximately 4 mm in the narrowest region near edges 17.
- each belt 13 extends to the immediate vicinity of the start of the needling passage 36 ( Figure 5).
- the distance d between the plane E of the ends of the paths of the belts 13 and the vertical plane P of the first needles of the needle board 6 is for example of the order of 25 mm.
- the needling passage 36 itself has a thickness which decreases for example from 10 mm to 4 mm from the inlet to the outlet.
- each transfer device 11a or 11b is adjustable by displacement of pins 38 connected to the plates 27 in buttonholes 39 formed in supports 41 secured to the frame of the needling machine.
- Each plate 27 rotatively carries a screw 42 which can be screwed in an adjustable manner into an ear 43 of the associated support 41 so as to adjust the position of the pins 38 in the buttonholes 39.
- the direction D1 of the aforementioned adjustment for the transfer device 11a, and the direction D2 of this adjustment for the device 11b converge from the rollers 12 towards the nozzles 14 and are more particularly parallel each to the face 34 associated with the V-shaped insertion slot.
- we can slide the devices 11a and 11b parallel to the faces 34 of the insertion slot so as to increase or reduce at will the minimum distance h between the paths 13a of the two belts 13.
- the two belts 13 rotate in opposite directions, so that the two transport paths 13a have a direction of movement going from the rollers 12 towards the spouts 14.
- the sheet arriving at the needling machine is thus compressed at the same time as driven towards the insertion slot and the needling passage.
- the fiber losses are almost zero because the transfer devices 11a and 11b lead the fibers almost as far as the interior of the needling passage.
- needling machines have working widths which can range from 2.50 m to 6 m.
- the belts 13 therefore have a width, measured parallel to the axis 16 of the rollers 12, which is 2.50 m to 6 m depending on the applications.
- the developed length of each mat 13 is less than its width. For example, said developed length is 1.60 m.
- the individual slats 14 according to the invention which stretch the conveyor belt in each of its longitudinal regions, mean that the conveyor belt has at most one low tendency to slide laterally, a tendency which is characteristic of carpets with a very long developed length relative to their width.
- the individually loaded nozzles provided by the invention solve both the problem of guiding a short belt and the problem of the precise introduction of a material with poor mechanical strength.
- each transfer device 11a or 11b is replaced by belts 113 each of which bypasses the roller 12 and a respective one of the spouts 14. These are all spouts 14a , each having a flange 33.
- each flange 33 is extended by a finger 37 extending beyond the plane E, to contribute to guiding the sheet of fibers according to the direction of movement in the short path from plane E to the start of the needling passage.
- Each belt 113 has a width which is little less than that of the spouts 14a, so that the width of the intervals between adjacent belts 113 is small.
- FIG. 6 Furthermore, the needling machine according to FIG. 6 is identical to that of FIGS. 1 to 5.
- each belt 113 has a relatively small width compared to its developed length, which eliminates the difficulties of guiding.
- fiber losses, in particular through the intervals between the belts 113, are less effectively prevented than in the embodiment of FIGS. 1 to 5.
- one of the bearings 29 of the roller 12 of each transfer device bears against an adjustment screw 31 as described above .
- the other bearing 29 is disposed between two guides 129 between which it can slide in a plane passing through the end line of the spouts. This sliding is limited by a wedge-shaped pusher 131 movable perpendicular to the aforementioned plane, and engaged between said bearing 29 and an ear 132 forming a stop secured to the corresponding plate 27.
- the position of the wedge-shaped pusher 131 is permanently adjusted by a double-acting cylinder 50, for example pneumatic, whose position of the rod 51 is controlled by a regulator, known in itself and not shown, depending on the indications given by two feelers 52, known in themselves, disposed respectively on either side of the mat 13.
- An adjustable stop 53 constituted in the example represented by a screw 54 screwed into an ear 55 secured to the plate 27 , makes it possible to limit the displacement of the wedge 131 as a function of the reaction capacity of the mat.
- the jack 50 makes it possible to adjust the angle of inclination A made by the axis of the roller in the plane passing through the axis of the roller and through the row of nozzles.
- the pushers 131 are shown in the middle position, for purposes of illustration, but in practice, it is preferred that the pusher 131 is always in one or other of its extreme positions, namely that corresponding to the sensor 52 which was last actuated by the belt (regulation by all or nothing).
- the stroke of the associated bearing 29 is for example of the order of 5 mm. This stroke varies the compression of the spouts 24 ( Figure 4), and therefore the tension of the carpet, in a manner which is uneven along the width of the carpet.
- the stop 132 is disposed between the bearing 29 and the spouts, and the wedge 131 is introduced between said bearing 29 and the stop 132.
- the weight of the roller 12 has an action in the opposite direction to that of the tension of the belt 13.
- the stop 132 is located relative to the bearing 29 on the side opposite the spouts 14, the wedge 131 being introduced between said bearing and said stopper, so as to limit the tension of the belt to a value lower than that which would correspond to the free action of the weight of the roller (12) on the belt.
- the operating mode of this stop 132 and corner 131 assembly actuated by the jack 50 is as follows.
- the probe 52 which detects a movement towards it of the carpet 13 informs the regulator thereof which acts so that the tension of the carpet 13 is higher at the end of the roller 12 situated on the side of the actuated probe 52 than at the other end .
- the regulator controls a displacement of the wedge which moves the corresponding bearing 29 away from the nozzles 14, which increases the tension of the mat 13 on this same side.
- the regulator controls a displacement of the corner which brings the corresponding bearing 29 closer to the spouts 14, which amounts to reducing the tension of the belt 13 on the side of this bearing to make it lower than that on the side of the other bearing. In both cases, the belt 13 moves laterally towards the bearing 29 corresponding to the lowest tension.
- This system cooperates effectively with the spouts 14 to ensure satisfactory guiding of the belt 13, especially for the very large widths thereof.
- the spouts could be made up of all kinds of elements guiding the flexible means of transport at a very small angle of curvature. It could, for example, be fixed or rotary cylindrical rods, the radius of which corresponds to the aforementioned radius of curvature.
- the jack 50 could be a hydraulic jack, and the assembly constituted by the jack 50, the wedge 131 and the stop 132 and intended to adjust the distance of one of the bearings 29 of the roller 12 relative to the line of the spouts 14 could be replaced by an eccentric device.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Nonwoven Fabrics (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Massaging Devices (AREA)
- Processing Of Solid Wastes (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Treatment Of Fiber Materials (AREA)
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88909558T ATE74976T1 (de) | 1987-10-09 | 1988-10-07 | Uebertragungsvorrichtung und verdichtungs- und einlassvorrichtung fuer eine nadelmaschine. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8713977A FR2621609B1 (fr) | 1987-10-09 | 1987-10-09 | Dispositif de transfert et dispositif de compression et d'introduction pour aiguilleteuse |
FR8713977 | 1987-10-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0334948A1 EP0334948A1 (de) | 1989-10-04 |
EP0334948B1 true EP0334948B1 (de) | 1992-04-15 |
Family
ID=9355682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88909558A Expired - Lifetime EP0334948B1 (de) | 1987-10-09 | 1988-10-07 | Übertragungsvorrichtung und verdichtungs- und einlassvorrichtung für eine nadelmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US5031289A (de) |
EP (1) | EP0334948B1 (de) |
AT (1) | ATE74976T1 (de) |
DE (2) | DE334948T1 (de) |
FR (1) | FR2621609B1 (de) |
WO (1) | WO1989003446A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT393389B (de) * | 1990-06-22 | 1991-10-10 | Fehrer Textilmasch | Vorrichtung zum gleichsinnigen aufbringen eines vliesbandes auf eine bewegte traegerbahn |
US5481786A (en) * | 1993-11-03 | 1996-01-09 | Spartan Mills | Method of manufacturing a recyclable carpet |
US5996195A (en) * | 1998-07-20 | 1999-12-07 | Morrison Berkshire, Inc. | Cross machine tensioning system and method |
DE10006763A1 (de) * | 2000-02-15 | 2001-08-16 | Fleissner Gerold | Vorrichtung zum hydrodynamischen Beaufschlagen der Fasern einer Faserbahn mit einem Fluid |
US6568050B2 (en) | 2001-02-26 | 2003-05-27 | Messier-Bugatti | Method and installation for advancing a needled fiber plate |
TW508390B (en) * | 2001-05-09 | 2002-11-01 | Ind Tech Res Inst | Feeding device for preneedling nonwoven fabrics |
FR2893636B1 (fr) | 2005-11-23 | 2008-04-18 | Asselin Thibeau Soc Par Action | Procede et dispositif pour transferer une nappe de fibres, et machine de consolidation, en particulier (pre-) aiguilleteuse ainsi equipee |
FR3063742B1 (fr) | 2017-03-09 | 2021-06-18 | Andritz Asselin Thibeau | Dispositif de transfert et/ou d'introduction d'une nappe de fibres dans une installation de consolidation, notamment une aiguilleteuse |
FR3098527B1 (fr) * | 2019-07-11 | 2021-07-23 | Andritz Asselin Thibeau | Dispositif de transfert et/ou d'introduction d'une nappe de fibres, notamment d'une nappe de non-tissé, dans une installation de consolidation, notamment une aiguilleteuse |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2809600A (en) * | 1955-03-16 | 1957-10-15 | Crompton & Knowles Loom Works | Machine for producing tufted fabrics |
AT246685B (de) * | 1963-07-16 | 1966-04-25 | Lambert Ing Kroell | Vorrichtung zur Herstellung von Bouclé- oder Velourteppichen |
IT957362B (it) * | 1972-04-17 | 1973-10-10 | Pratesi A | Macchina agugliatrice a piastre di aghi autoalimentanti per formazio ne distrati di fibre tessili legate senza tessitura |
AT333048B (de) * | 1974-04-01 | 1976-10-25 | Ernst Fehrer Textilmaschinenfa | Vorrichtung zum einfuhren von vliesen in nadelmaschinen |
DE7717626U1 (de) * | 1977-06-03 | 1977-09-29 | Oskar Dilo Maschinenfabrik, Kg, 6930 Eberbach | Nadelfilzmaschine mit einer fuehrungsvorrichtung fuer den nadelbalken |
US4185738A (en) * | 1977-11-14 | 1980-01-29 | Zenzaburo Tsukumo | Guiding device for endless apron |
-
1987
- 1987-10-09 FR FR8713977A patent/FR2621609B1/fr not_active Expired - Fee Related
-
1988
- 1988-10-07 DE DE198888909558T patent/DE334948T1/de active Pending
- 1988-10-07 US US07/415,315 patent/US5031289A/en not_active Expired - Lifetime
- 1988-10-07 DE DE8888909558T patent/DE3870220D1/de not_active Expired - Fee Related
- 1988-10-07 AT AT88909558T patent/ATE74976T1/de not_active IP Right Cessation
- 1988-10-07 WO PCT/FR1988/000498 patent/WO1989003446A1/fr active IP Right Grant
- 1988-10-07 EP EP88909558A patent/EP0334948B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2621609A1 (fr) | 1989-04-14 |
DE3870220D1 (de) | 1992-05-21 |
ATE74976T1 (de) | 1992-05-15 |
WO1989003446A1 (fr) | 1989-04-20 |
EP0334948A1 (de) | 1989-10-04 |
US5031289A (en) | 1991-07-16 |
DE334948T1 (de) | 1990-02-08 |
FR2621609B1 (fr) | 1990-01-19 |
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