EP2138617A1 - Planche à aiguilles pour une aiguilleteuse - Google Patents

Planche à aiguilles pour une aiguilleteuse Download PDF

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Publication number
EP2138617A1
EP2138617A1 EP08171805A EP08171805A EP2138617A1 EP 2138617 A1 EP2138617 A1 EP 2138617A1 EP 08171805 A EP08171805 A EP 08171805A EP 08171805 A EP08171805 A EP 08171805A EP 2138617 A1 EP2138617 A1 EP 2138617A1
Authority
EP
European Patent Office
Prior art keywords
needle
needles
group
base plate
needle board
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
EP08171805A
Other languages
German (de)
English (en)
Other versions
EP2138617B1 (fr
Inventor
Johann Philipp Dilo
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from EP08011414A external-priority patent/EP2138616B1/fr
Application filed by Oskar Dilo Maschinenfabrik KG filed Critical Oskar Dilo Maschinenfabrik KG
Priority to EP08171805A priority Critical patent/EP2138617B1/fr
Publication of EP2138617A1 publication Critical patent/EP2138617A1/fr
Application granted granted Critical
Publication of EP2138617B1 publication Critical patent/EP2138617B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 invention relates to a needle board for a needle machine.
  • Needle machines are well known and, for example, in Lünenschand and Albrecht: “Nonwovens", Georg-Thieme-Verlag Stuttgart, 1982, pp. 122 to 129 or in Albrecht, Fuchs, Kittelmann “Nonwovens”, Wiley-VCH Verlag Weinheim, 2000, p. 270 ff , described.
  • the needle boards used in such a needle machine usually consist of a base plate made of aluminum, from whose holes the needles protrude, and attached to its back, appropriately drilled plastic plate, in particular of a polyamide (nylon), in the back grooves are milled into the the holes open.
  • the grooves serve to receive the bent at the rear ends of the needles portions of the needle shafts.
  • the holes in such a needle board are closely matched to the shaft diameter of the needles held by the needle board so that the needles in the needle board are as tight as possible and do not wobble in use.
  • the needle board rests on the back of the needle bar of the needle machine to which it is attached, whereby the bent portions of the needles are held in the grooves.
  • the needles of a conventional needling machine have a round cross-section and a so-called "crutch", ie an angled piece on the upper part.
  • the needle is in cross-section repeatedly equipped with conical transitions to reduced diameter sections, the working part is usually triangular and has a tip.
  • the circular cylindrical cross section on the clamping part of conventional needles allows the attachment in the needle board by a press fit in holes provided for this purpose with a slightly smaller diameter than the needle shaft.
  • the use of multiple needle modules is described on a needle board, the needle modules each having a plurality of pressed-in needles and are bolted to webs of the needle board, which extend between parallel grooves of the needle board.
  • the disadvantage here is that the introduction of the needles in the individual needle modules takes a lot of time.
  • the needle board has a base plate with a plurality of receptacles and a plurality of needles arranged in a predetermined pattern in the receptacles and the tips of which project from the base plate, and the needle board has a plurality of needle modules, each of which is in a receptacle of the base plate is inserted and has at least one group of needles, wherein the needles of each group are formed integrally with each other. Integral means that the needles of a group are integrally formed of a material.
  • each needle module By equipping each needle module with an integrally formed group of needles a particularly simple construction is achieved, which is inexpensive to produce and requires little maintenance.
  • the needle groups are formed from sheet metal and are produced by punching and / or sawing. This allows a cost-effective mass production.
  • the receptacles are formed as slots in the base plate.
  • the slot formation can be done by a simple machining operation, so that the production of the needle board is simplified.
  • the needle modules may additionally comprise a carrier plate fixedly connected to the at least one group of needles. This allows a simplified fixation of the needle module in the receptacle of the base plate.
  • the carrier plates are preferably made of plastic, e.g. Nylon, polyethylene, polypropylene, polyurethane or the like, formed and molded on the needle groups or molded.
  • the plastic carrier plate has a slot and is pressed onto the needle module or vice versa.
  • the slipping is prevented, for example, by frontally notched edges of the needle module.
  • the carrier plates or alternatively the needle groups themselves may have a protruding edge portion, which in each case rests on a shoulder in the wall region of the corresponding receptacle in the base plate.
  • edge portion and the paragraph are advantageously formed circumferentially.
  • the needles of a group of needles are preferably connected together at their foot area. As a result, a web is formed, which gives the needle group sufficient stability.
  • the invention further provides a method for producing a needle board for a needle machine comprising the steps of (a) providing a base plate with a plurality of receptacles, (b) providing a plurality of needle modules, each of which has at least one group of needles formed integrally with each other, and ( c) inserting the needle modules in the recordings of the base plate.
  • step (b) may comprise the step of punching out several groups of needles made of sheet metal.
  • step (b) comprises the step of applying, spraying or pressing a carrier plate made of plastic to at least one group of needles.
  • the method according to the invention can be automated during operation in that the needle modules are automatically pressed from a magazine into the base plate and pressed out again after wear and the needle board is correspondingly equipped with new needle modules.
  • FIG. 1 the schematic structure of a needle machine is shown.
  • a fleece 2 is supplied at the inlet of the needle machine and conveyed to the needle zone.
  • a needle bar 4 with a needle board 6 attached thereto is arranged, which is equipped with needles 8 for solidifying the nonwoven.
  • the nonwoven 2 to be needled is guided between a hold-down plate 10 and a throat plate 12.
  • the needles 8 densify the web 2 by being pierced into the nonwoven web at a high frequency and pulled out again. They pass through recesses in the hold-down plate 10 and the needle plate 12 therethrough.
  • the resulting product is a consolidated web 14.
  • the person skilled in the various forms of needle machines are known, including double needle machines, which is needled from above and below by means of two needle bars, or needle machines in which the needle bar during the solidification process in the direction of movement of the web be moved.
  • the needle board 6 according to the invention can be used for any type of needle machine.
  • Fig. 2 an embodiment of the needle board 6 according to the invention is shown.
  • the needle board 6 comprises a base plate 16, in which a plurality of receptacles 18 is formed, which are formed here in the form of longitudinal slots.
  • the base plate 16 is preferably made of aluminum, but other materials such as magnesium, etc. are also possible.
  • each needle module 21 are inserted.
  • Each needle module has a group of needles 8 integrally formed with each other are.
  • In the upper portion of each needle module 21 may each be arranged a support plate 22 which is formed of plastic by injection molding around the needle group around. Likewise, there are embodiments (see below) in which it is possible to dispense with the carrier plate 22.
  • Fig. 2 three needle modules 21 are shown on the one hand in a separated state from the needle board 6 and on the other hand in an inserted into the needle board 6 state. To better illustrate three slots 18 of the needle board 6 are shown unfilled in the right part of the figure.
  • the needle modules 21 are introduced in the illustrated example case in the slots 18 and held there form-fitting manner, wherein the support plate 22, the slot 18 of the base plate 16 completely fills.
  • Each slot 18 may have in its wall region a circumferential shoulder on which rests in the inserted state of the support plate 22, a projecting edge portion of the support plate 22.
  • the shoulder and the protruding edge portion can also be omitted.
  • the necessary force for holding the needle modules 21 in the base plate 16 is generated by frictional engagement.
  • a conical or tapered narrowing of the slots 18 in the direction of its lower edge and a corresponding shape of the support plates 22 is conceivable.
  • each shaft portion of a needle group may have a protruding edge portion which positively engages the corresponding circumferential shoulder of the slots 18. Again, it is possible to provide the shaft portion with narrowing flanks.
  • Fig. 3a shows a side view of a section of a needle module 21, wherein the three illustrated needles 8 each have a different cross section at its tip.
  • Fig. 3b are in cross-sectional view along the line A - A off Fig. 3a the different tips of the needles 8 are shown.
  • the upper portion of the needle module 21 is used as a clamping portion, the middle as the central portion and the lower section is referred to as a work section.
  • the needles 8 may have any cross section in the middle and working section, for example, square, rectangular, circular, elliptical or polygonal. Preferably, a rectangular cross-section, so as to be able to punch the needle groups in one piece from sheet metal strips.
  • the circular cross-section of the needles is reduced for example by pulling on thinner cross-sections and brought by hammering on the triangular working section.
  • a punched from metal strips or otherwise machined (sawing) processed needle group can be produced cheaper and faster, but may also have reduced or oblique or conical sections of the needles, which are cold-formed in a press, for example.
  • the group of needles has varied cross-sections, the chuck at the top with constant cross-section and optionally provided with a projection or shoulder, conical in a central portion of the individual needles or narrowing with oblique flanks and in the working section below e.g. cylindrical or conical.
  • the tip of the needles can be formed by stamping, forming or machining (for example by grinding).
  • materials other than sheet metal may be used.
  • materials other than sheet metal may be used.
  • special metal alloys can be used, whereby the needle group can be milled out or sawn in one piece.
  • Fig. 4a, 4b, 4c to 11a, 11b, 11c show, respectively, a side, front and perspective view of various embodiments of needle modules according to the present invention.
  • a needle module 21 each have a group of needles 8, but it could also be arranged a plurality of needle groups in a needle module 21.
  • the needles 8 of the needle group are arranged here in series, but other groupings are also conceivable.
  • the needle group has twenty equally spaced needles 8.
  • the needles 8 of the needle module 21 in the middle section in each case a straight edge and a bevelled right flank. Also, the front of the central portion of the needles 8 is chamfered to the working section. Alternatively, however, the needles 8 in the middle section could also be equipped with symmetrical flanks or tapering towards the working section.
  • the in the Fig. 5a, 5b, 5c illustrated embodiment of the needle module 21 is except for the Point of the needles 8, which is here multidimensionally shaped, with the in the Fig. 4a, 4b, 4c identical embodiment shown.
  • Multidimensional means in this context that the tips have at least two obliquely tapered flanks, which are offset from each other by 90 °.
  • the in the Fig. 6a, 6b, 6c illustrated embodiment of the needle module 21 has in the clamping portion a support plate 22 similar to the in Fig. 2 shown embodiment.
  • the clamping section of the needle module 21 may be provided with holes 25 in order to promote the injection molding of a plastic sheath, ie the support plate 22, by a better fixation.
  • a protruding edge portion 27 is shown in the clamping section of the needle module 21.
  • the in the Fig. 7a, 7b, 7c illustrated embodiment of the needle module 21 is connected to the in the Fig. 6a, 6b, 6c identical embodiment, with the exception of the notches 29, which are arranged in the working section of the needles 8.
  • the notches 29 with a few hundredths of mm depth can be punched in mass production or first finely punch the plate and then separate the holes by punching, so that semi-circular or pitch-like notches arise. There are all known in the art forms of notches conceivable.
  • the notches 29 are arranged on the right side of the working portion of the needles 8, in which in Fig. 9a, 9b, 9c illustrated embodiment on the front.
  • the number of notches is freely selectable depending on the needling requirements. At least one notch is either oriented on one side of the needle in or against the direction of travel or 90 ° offset to the left or right. Multiple notches can be placed on the three or four sides at the same height or offset from one another.
  • the Fig. 10a, 10b, 10c show a further embodiment of the needle module 21, wherein the projecting edge portion 27 in the clamping section further down than in the in the Fig. 6a, 6b, 6c illustrated embodiment.
  • the needle module 21 penetrates completely or only partially into the base plate.
  • the in the Fig. 11a, 11b, 11c illustrated embodiment of the needle module 21 has a protruding edge portion 30 in the form of a crutch as a bent edge of the upper end of the chucking on.
  • a protruding edge portion 30 in the form of a crutch as a bent edge of the upper end of the chucking on.
  • Such crutches are easily produced by bending in sheet metal as a material of the one-piece needle group.
  • the crutch for example, provided to intervene in a designated receptacle 18 in the base plate 16 of the needle board 6 or to serve as a point of attack for an automated, mechanically carried out replacement process for the needle module.
  • the protruding edge portion 30 is formed only in sections, on both longitudinal sides or on the end faces. Function of the protruding edge portion 30 is a stopper forming in the needle tip direction, which prevents slipping out of the needle group.
  • placement machines can be provided which perform these standardized operations without manual effort. Likewise, it is conceivable to run both processes in a machine.
  • the alternative casting or injection molding or pressing of the support plate 22 made of plastic to the needle group can preferably be done automatically.
  • a needle board in which the replacement of defective needles or a replacement can be done easily and inexpensively and consists of simple, suitable for mass production, cost-effective components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Knitting Machines (AREA)
EP08171805A 2008-06-24 2008-12-16 Planche à aiguilles pour une aiguilleteuse Not-in-force EP2138617B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08171805A EP2138617B1 (fr) 2008-06-24 2008-12-16 Planche à aiguilles pour une aiguilleteuse

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08011414A EP2138616B1 (fr) 2008-06-24 2008-06-24 Planche à aiguilles pour une aiguilleteuse
EP08012260 2008-07-07
EP08171805A EP2138617B1 (fr) 2008-06-24 2008-12-16 Planche à aiguilles pour une aiguilleteuse

Publications (2)

Publication Number Publication Date
EP2138617A1 true EP2138617A1 (fr) 2009-12-30
EP2138617B1 EP2138617B1 (fr) 2011-04-13

Family

ID=40280726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08171805A Not-in-force EP2138617B1 (fr) 2008-06-24 2008-12-16 Planche à aiguilles pour une aiguilleteuse

Country Status (4)

Country Link
EP (1) EP2138617B1 (fr)
AT (1) ATE505574T1 (fr)
DE (1) DE502008003172D1 (fr)
PT (1) PT2138617E (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2918719A1 (fr) 2014-03-13 2015-09-16 Oskar Dilo Maschinenfabrik KG Procédé d'homogénéisation de l'image de piqûre dans une étoffe aiguilletée
DE202014011288U1 (de) 2014-03-13 2019-01-14 Oskar Dilo Maschinenfabrik Kg Vernadelungseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB399104A (en) 1933-03-11 1933-09-28 Charles James Woodburne Improvements relating to needle boards for the manufacture of needled felts or cloths
US3680182A (en) * 1971-05-11 1972-08-01 Crompton & Knowles Corp Needle board
EP1391546A1 (fr) * 2002-08-20 2004-02-25 Oskar Dilo Maschinenfabrik KG Plaque à aiguilles pour aiguilleteuse
DE102005034144B3 (de) * 2005-07-19 2006-12-07 Oskar Dilo Maschinenfabrik Kg Nadelmaschine mit Einrichtungen zur Luftführung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB399104A (en) 1933-03-11 1933-09-28 Charles James Woodburne Improvements relating to needle boards for the manufacture of needled felts or cloths
US3680182A (en) * 1971-05-11 1972-08-01 Crompton & Knowles Corp Needle board
EP1391546A1 (fr) * 2002-08-20 2004-02-25 Oskar Dilo Maschinenfabrik KG Plaque à aiguilles pour aiguilleteuse
DE102005034144B3 (de) * 2005-07-19 2006-12-07 Oskar Dilo Maschinenfabrik Kg Nadelmaschine mit Einrichtungen zur Luftführung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ALBRECHT; FUCHS; KITTELMANN: "Vliesstoffe", 2000, WILEY-VCH VERLAG, pages: 270 FF
LÜNENSCHLOSS; ALBRECHT: "Vliesstoffe", 1982, GEORG-THIEME-VERLAG STUTTGART, pages: 122 - 129

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2918719A1 (fr) 2014-03-13 2015-09-16 Oskar Dilo Maschinenfabrik KG Procédé d'homogénéisation de l'image de piqûre dans une étoffe aiguilletée
EP3000923A1 (fr) 2014-03-13 2016-03-30 Oskar Dilo Maschinenfabrik KG Planche a aiguilles
DE202014011288U1 (de) 2014-03-13 2019-01-14 Oskar Dilo Maschinenfabrik Kg Vernadelungseinrichtung

Also Published As

Publication number Publication date
ATE505574T1 (de) 2011-04-15
DE502008003172D1 (de) 2011-05-26
EP2138617B1 (fr) 2011-04-13
PT2138617E (pt) 2011-07-01

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