WO2022136615A1 - Aiguille à touffeter - Google Patents

Aiguille à touffeter Download PDF

Info

Publication number
WO2022136615A1
WO2022136615A1 PCT/EP2021/087432 EP2021087432W WO2022136615A1 WO 2022136615 A1 WO2022136615 A1 WO 2022136615A1 EP 2021087432 W EP2021087432 W EP 2021087432W WO 2022136615 A1 WO2022136615 A1 WO 2022136615A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
taffeta
carrier
point
needle carrier
Prior art date
Application number
PCT/EP2021/087432
Other languages
German (de)
English (en)
Inventor
Johann Owegeser
Andreas Friesen
Original Assignee
Smg Sportplatzmaschinenbau Gmbh
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
Application filed by Smg Sportplatzmaschinenbau Gmbh filed Critical Smg Sportplatzmaschinenbau Gmbh
Priority to EP21844328.1A priority Critical patent/EP4267788A1/fr
Publication of WO2022136615A1 publication Critical patent/WO2022136615A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C15/00—Making pile fabrics or articles having similar surface features by inserting loops into a base material
    • D05C15/04—Tufting
    • D05C15/08—Tufting machines
    • D05C15/16—Arrangements or devices for manipulating threads
    • D05C15/20—Arrangements or devices, e.g. needles, for inserting loops; Driving mechanisms therefor
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/202—Artificial grass

Definitions

  • the invention relates to a tacking needle.
  • taffeta machine Larger numbers of taffeta needles are used in a so-called taffeta machine.
  • the taffeta machine is typically used to insert thread pieces cut from a thread supply into a base. This insertion movement is also called “tafting in”. On the one hand, these pieces of thread are intended to support the natural blades of grass and, on the other hand, to stabilize, i.e. to reinforce the soil.
  • the taffeta needle is pressed into the ground in a vertical movement, holding the piece of thread at its tip in a fork-like thread guide. It is clear that the needle tip is subject to a certain abrasive load. The tip of the needle can also be destroyed if the subsoil is not prepared to be free of stones or obstacles.
  • the invention is based on a taffeta needle as described above and proposes that the taffeta needle have a needle carrier and a needle point, the needle point being able to be placed on the needle carrier and firmly connected to it, and an alignment element provided on the needle point, which cooperates with an alignment counter element of the needle carrier for aligning the needle tip on the needle carrier.
  • This division of the taffeta needle into two elements to be produced individually allows these two elements to be optimized for their respective area of application.
  • the entire taffeta needle does not have to be made of the same hard material as the needle tip, which is subject to significantly higher wear.
  • a predetermined breaking functionality can also be implemented in the usually significantly larger needle carrier, which under certain circumstances could not be implemented in the needle tip. Also is in In the event of damage to the needle tip, you only have to replace it, which is easily and inexpensively possible by means of a corresponding structural arrangement, as proposed by the invention.
  • the arrangement of an alignment element on the needle tip and an alignment counter-element on the enables a simple, reliable and reproducible definition of the alignment and/or positioning of the needle tip on the needle carrier, especially when changing the needle tip, e.g. B. in case of breakage or as a precaution if the floor to be tafted is too hard for the needle point used and there is a risk of damage or destruction of the needle point.
  • the needle tip is attached to the needle carrier and preferably connected to a connecting means.
  • a receiving mandrel is typically provided for this purpose on one or the other element.
  • the receiving mandrel and its communicating counterpart may also be provided with an alignment feature, such as a flattened planar surface, thus enforcing a fixed geometric location between the tip of the nose and the needle carrier and needle seat of the tacking machine.
  • an alignment feature such as a flattened planar surface
  • the aim is for the needle tip to be arranged in a detachably fixed manner on the needle carrier.
  • the needle tip is first of all mechanically stable and held firmly by the needle carrier, but this connection can preferably be separated non-destructively (e.g. in the event of maintenance, servicing or repairs), ie it can be released.
  • the taffeta needle is intended in particular for a taffeta machine, the taffeta machine being intended for inserting or tacking cut pieces of thread into a base.
  • a tacking needle is guided in a typical tacking machine by an element of the tacking machine so that the tacking needle is vertically movable. In a retracted state, the taffeta machine typically picks up a piece of thread, then moves down and inserts the piece of thread into a substrate.
  • a notch provided on the circumference can be provided, into which a projection of the other element protrudes.
  • the overhang can be provided both on the needle tip and on the needle carrier.
  • the notch is then typically provided on the respective other element.
  • a tongue and groove arrangement with one element accommodating the tongue and the counter-element accommodating the groove.
  • the alignment element provided on the needle tip and the alignment counter-element arranged on the needle carrier interact in such a way that the needle tip is positioned on the needle carrier in a precise rotational position.
  • Such an embodiment makes it possible for different needle tips to be positioned in the correct position on the needle carrier in the event of an exchange. This is preferably achieved by a form-fitting and/or twisted interaction of the alignment element and the counter-alignment element.
  • positive locking in the circumferential direction e.g. oval cross section, tongue and groove arrangement, notch protruding into the recess, etc.
  • the needle carrier has a receiving mandrel that dips into a receiving opening in the needle tip.
  • the arbor typically protrudes beyond the rest of the needle carrier. In particular, it can be designed as a projection.
  • a particular advantage of this design is that if the needle point is worn, it can be easily removed, the arbor of the needle carrier can be cleaned and then a fresh needle point with a clean opening is placed on the arbor.
  • This variant facilitates assembly and, in particular, maintenance of the taffeta needle. Replacing the needle tip is sufficient in most cases of a necessary intervention, which means that time-consuming assembly work can be dispensed with.
  • the needle tip has a receiving mandrel that dips into a receiving opening of the needle carrier. This corresponds to a kinematic reversal of the previously described feature, which can also be implemented and has similar advantages.
  • the needle point preferably has a thread guide.
  • This can be designed in particular as a fork-like or prong-like thread guide. A piece of thread can thus be held reliably, in particular while it is being inserted vertically downwards into a substrate in a taffeta process.
  • the thread guide is preferably located on the side opposite the receiving mandrel or the receiving opening. This allows for easy implementation. However, an arrangement of the thread guide at a different point is also possible, for example a thread guide can also be formed along a longitudinal extension of the needle tip.
  • an adhesive, welded or soldered connection between the needle carrier and the needle tip can be provided as the connecting means. This allows for a reliable connection that is easy to establish. If the needle tip wears out, these can also be loosened again with little effort.
  • other types of connection can also be used.
  • the thread guide can in particular have a thread guide plane which is intended to receive the piece of thread to be inserted. As a result, the piece of thread can be held not only in position, but also in a defined alignment
  • a thread guide plane can be defined in particular with reference to the needle point or the entire taffeta needle. In particular, it can be a plane in which the piece of thread extends during proper operation. The piece of thread is typically pulled down by the point of the needle during tacking. The piece of thread can form a triangular shape, this triangle is preferably part of the thread guide plane. The term that the piece of thread to be used is received in the thread guide plane is not to be understood here in a concrete sense, but rather in a geometrical sense.
  • the thread guiding plane can in particular be an imaginary plane.
  • the needle carrier can have an alignment surface which is intended to align the taffeta needle in a needle seat (of the taffeta machine).
  • the position of the taffeta needle in the needle seat ultimately determines the orientation of the thread guide plane.
  • an alignment of the thread guide plane that is as exact as possible is advantageous.
  • the proposed equipment of an alignment surface on the needle carrier makes this considerably easier.
  • Thread guide planes of all thread pieces to be used in a taffeta machine are typically oriented parallel to one another.
  • the taffeta needles which are typically fundamentally rotationally symmetrical, are therefore mounted in particular in precisely defined geometric positions. This can be achieved by providing an alignment surface against which, for example, the taffeta needle is clamped during assembly. An alignment of the taffeta needle is thus fixed, and this geometric relationship is also transferred to the needle tip via the alignment element or alignment counter-element.
  • Also disclosed as essential to the invention are all other spatial arrangements and (acute or obtuse-angled) alignments of the thread guide plane with respect to the alignment surface. A right-angled arrangement permits good accessibility of the taffeta needle in its needle holder, but without restricting the invention to this.
  • the taffeta needle is straight.
  • the needle point and needle carrier are aligned with each other, which means that their longitudinal axes are identical and the taffeta needle does not have any unwinding or cranking, which under certain circumstances can lead to the destruction of the taffeta needle under the considerable pressure (up to 65 kN (6.5t)).
  • the needle carrier and/or needle tip consists predominantly, preferably completely, of solid material. This configuration significantly increases the mechanical stability and resilience of the taffeta needle according to the invention.
  • the needle carrier preferably has a predetermined breaking point. This can ensure that if it is impossible to insert the taffeta needle into the ground, for example due to a stone or a slab, the needle carrier breaks in a defined manner. As a result, further damage to a taffeta machine can be avoided.
  • the taffeta machine can be constructed in such a way that in the event of a taffeta needle breaking at the predetermined breaking point, no further damage occurs and a relatively simple replacement of the needle carrier is sufficient.
  • the predetermined breaking area can be formed in particular by weakening the material of the needle carrier.
  • this can be a geometric weakening, for example a constriction. This can ensure a defined breaking at the predetermined breaking point.
  • the needle carrier can have hardened and unhardened areas, and hardened areas can form a predetermined breaking point.
  • Such hardened areas typically fracture faster under the influence of forces than unhardened ones, which are more able to withstand the forces due to a defined yielding.
  • the needle carrier can be designed in particular as a cylindrical base body. This allows for ease of manufacture and use. However, other shapes are also possible.
  • the ratio of the length of the needle carrier to its diameter can preferably be greater than 40, more preferably greater than 50, and particularly preferably greater than 60. This allows for an elongated design, which allows for dense juxtaposition of taffeta needles. In principle, however, other ratios of length to diameter are also possible.
  • the needle carrier can have a diameter which corresponds to that of the needle tip
  • the needle carrier can be designed in particular as a metal rod made of iron, steel or an iron alloy. Such materials have proven to be particularly stable and abrasion-resistant for the application relevant here. However, the use of other materials is also possible.
  • the needle carrier preferably has a Vickers hardness below 1000 HV, particularly preferably below 900 HV, at least in sections. Such hardnesses have proven advantageous for typical applications.
  • the needle carrier can also have such a Vickers hardness in its entirety.
  • the needle tip can preferably consist of iron, steel, iron alloy, ceramic, fiber or glass fiber reinforced plastic, in particular polyetheretherketone (PEEK). This enables easy manufacturability and good durability.
  • PEEK polyetheretherketone
  • the needle tip can be designed in particular as a metal powder injection molding (MIM) component.
  • MIM metal powder injection molding
  • the needle tip can preferably have a Vickers hardness greater than 1000 HV, more preferably greater than 1300 HV, particularly preferably greater than 1400 HV.
  • the Vickers hardness can be greater than that of the cantilever. In this way, account can be taken of the fact that the tip of the needle is typically exposed to greater abrasive stress during operation, since it is inserted into the subsoil.
  • the task set at the beginning is also achieved by a method for changing the needle point of a taffeta needle, as described, which is characterized by the following sequence of steps:
  • connection area of the needle carrier and the new needle point equip at least one of the mutually facing contact surfaces of the needle carrier and the new needle point with a connecting means that firmly connects the elements
  • the mechanical load on the taffeta needle is determined during the taffeta process and a change of the taffeta needle or the needle tip is indicated in the event of an impending or existing overload.
  • the present application also discloses a variant in which the mechanical stress on the taffeta needle is monitored.
  • the hydraulic pressure during the process of setting down the taffeta needles and pressing them into the ground is measured and monitored. This is a direct measure of the mechanical stress on the taffeta needles. If their mechanical load exceeds a threshold value, this overload is indicated in a suitable manner, for example by a measuring device or indicated optically and/or acoustically.
  • a suitable manner for example by a measuring device or indicated optically and/or acoustically.
  • the invention also includes the use of a taffeta needle, which has a needle carrier and a needle point, the needle point being placeable on the needle carrier and being releasably firmly connected to it, in particular in a twist-proof and detachable manner, in particular as described in this application, for insertion or Tacking cut pieces of thread into a bottom, especially with a tacking machine.
  • a taffeta needle which has a needle carrier and a needle point, the needle point being placeable on the needle carrier and being releasably firmly connected to it, in particular in a twist-proof and detachable manner, in particular as described in this application, for insertion or Tacking cut pieces of thread into a bottom, especially with a tacking machine.
  • Fig. 1a A taffeta needle in a first position in an external view
  • Fig. 1b The taffeta needle of Figure 1a in a cross-sectional view
  • FIG. 2b The tacking needle of FIG. 2a in a cross-sectional view.
  • Fig. 1a shows a tacking needle 1 according to a first embodiment in an external view.
  • the taffeta needle 1 has a needle carrier 3 and a needle point 5 . These two elements together form the taffeta needle 1.
  • the taffeta needle 1 is elongate and has a high length to diameter ratio.
  • the taffeta needle 1 can be used in particular to grip pieces of thread in a taffeta machine and insert them into a substrate.
  • the needle tip 5 is attached to the needle carrier 3 in such a way that it can be detached from the needle carrier 3 .
  • This makes it possible to attach the needle point 5 to a movable element of a tacking machine, so that the needle carrier 3 can perform a defined movement. In particular, this can be a vertical movement.
  • the needle tip 5 guides a piece of thread, not shown, which is to be inserted into a substrate. It can happen, for example, that the ground has a stone or a similarly hard element that can damage the needle tip 5 . In this case, it is typically sufficient to merely exchange the needle tip 5, whereas the needle carrier 3 can remain in its attachment.
  • the needle carrier 3 has an alignment surface 32 which can interact with a fastening of the needle carrier 3 . This makes it possible to set an orientation of the needle carrier 3 relative to a fastening. This involves, on the one hand, a possible rotation about a longitudinal axis and, on the other hand, also a positioning along this longitudinal axis.
  • the alignment surface 32 is designed as a recessed surface, which can be held by a complementary element, for example.
  • the needle tip 5 has an alignment element 50 .
  • the needle carrier 3 has an alignment counter-element 30 complementary thereto.
  • the alignment element 50 is in the present case in the form of a projection.
  • the counter-alignment element 30 is designed as an exception complementary thereto. In this way it can be ensured that the needle tip 5 placed on the needle carrier 3 has a predetermined orientation relative to the needle carrier 3 . This applies in particular to rotation about a longitudinal axis. However, it can also be ensured in this way that the needle tip 5 has been pushed completely onto the needle carrier 3 .
  • the alignment element 50 can be designed as an exception and the alignment counter-element 30 can be designed as a projection.
  • Fig. 1b shows a cross-sectional view of the tacking needle 1 of Fig. 1a.
  • the needle carrier 3 has a receiving mandrel 31 which engages in a receiving opening 51 in the needle tip 5 . This enables a reliable connection between the needle carrier 3 and the needle point 5.
  • the receiving mandrel 31 extends along the longitudinal direction of the entire tacking needle 1, as shown.
  • a thread guide 52 is arranged at the end of the needle point 5 . This serves to hold the piece of thread securely and to fix it in terms of its position to such an extent that it can be reliably inserted into a substrate. For this purpose, the taffeta needle 1 can move vertically downwards and take the piece of thread with it. The thread guide prevents unwanted displacement or removal of the piece of thread.
  • FIGS. 2a and 2b show the tacking needle 1 according to FIGS. 1a, b and rotated 90° about its longitudinal axis. The differences to the illustration according to FIGS. 1a, b are essentially discussed below.
  • the alignment member 50 of the needle tip 5 is elongated on the outside in the second embodiment. It engages in an external indentation which forms counter-alignment element 30 . This also allows the position and orientation of the needle carrier 3 and the needle tip 5 to be fixed relative to one another.
  • a thread guide plane 53 is also shown in FIG. 2a.
  • the piece of thread typically runs in this thread guide plane 53 when it is gripped by the thread guide 52 .
  • the thread guide plane 53 lies at right angles to the alignment surface 32.
  • the position of the thread guide plane 53 relative to the alignment surface 32 is defined by the position and alignment relationship, which is defined by the interaction between the alignment element 50 and the counter-alignment element 30. If the tacking needle 1 assumes a defined position and alignment relationship with the tacking machine by means of the alignment surface 32, the position of a piece of thread is also defined.
  • the needle point 5 and the needle carrier 3 can be manufactured independently of one another. This allows the use of optimized materials and manufacturing processes.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

L'invention concerne une aiguille à touffeter d'une machine à touffeter, la machine à touffeter étant conçue pour insérer, ou touffeter, des pièces découpées de fil dans un matériau de base, et l'aiguille à touffeter comprenant un support d'aiguille et une pointe d'aiguille. La pointe d'aiguille peut être positionnée sur le support d'aiguille et peut être reliée de manière fixe à ce dernier, en particulier de sorte qu'elle ne puisse pas tourner ou être retirée, et la pointe d'aiguille est pourvue d'un élément d'alignement qui coopère avec un élément d'alignement d'accouplement du support d'aiguille afin d'aligner la pointe d'aiguille sur le support d'aiguille.
PCT/EP2021/087432 2020-12-23 2021-12-22 Aiguille à touffeter WO2022136615A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21844328.1A EP4267788A1 (fr) 2020-12-23 2021-12-22 Aiguille à touffeter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202020107543.8 2020-12-23
DE202020107543.8U DE202020107543U1 (de) 2020-12-23 2020-12-23 Taftnadel

Publications (1)

Publication Number Publication Date
WO2022136615A1 true WO2022136615A1 (fr) 2022-06-30

Family

ID=79686647

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/087432 WO2022136615A1 (fr) 2020-12-23 2021-12-22 Aiguille à touffeter

Country Status (3)

Country Link
EP (1) EP4267788A1 (fr)
DE (1) DE202020107543U1 (fr)
WO (1) WO2022136615A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163278A1 (fr) * 1984-05-25 1985-12-04 Firma Jos. Zimmermann Aiguille pour machine à tufter
DE102015112329A1 (de) * 2015-07-28 2017-02-02 Smg Sportplatzmaschinenbau Gmbh Taftmaschine
WO2017051357A1 (fr) * 2015-09-25 2017-03-30 Jeffrey Niemann Aiguille à tricoter
WO2018074930A1 (fr) * 2016-10-21 2018-04-26 Desso Sports B.V. Procédé et dispositif pour introduire des fibres de type fil dans le sol, combinaison d'un élément de substrat et d'un groupe de fibres de type fil, et dispositif pour introduire des fibres de type fil dans le sol

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH87187A (de) 1920-02-12 1920-11-16 George V Pade Sticknadel.
AT91919B (de) 1920-12-24 1923-03-26 American Art Needle Co Sticknadel.
JPH11117156A (ja) 1997-10-08 1999-04-27 Fukuhara Needle Kk 分割型メリヤス針
NL1021138C2 (nl) 2002-07-23 2004-01-27 Desseaux H Tapijtfab Inrichting geschikt voor het in een ondergrond aanbrengen van langgestrekte vezels alsmede een dergelijke werkwijze.
DE20310571U1 (de) 2003-07-09 2003-09-25 Ksl Keilmann Sondermaschb Gmbh Tuftingnadel
CN108842568A (zh) 2018-07-26 2018-11-20 北京天仁科技发展有限公司 一种便携式手工植丝装置
DE202020100948U1 (de) 2020-02-21 2020-02-28 Groz-Beckert Kommanditgesellschaft Mehrteilige, maschenbildende Nadel mit Kupplung
CN111517162B (zh) 2020-04-30 2021-08-10 北京天仁科技发展有限公司 应用于混合草坪植丝机的压丝装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163278A1 (fr) * 1984-05-25 1985-12-04 Firma Jos. Zimmermann Aiguille pour machine à tufter
DE102015112329A1 (de) * 2015-07-28 2017-02-02 Smg Sportplatzmaschinenbau Gmbh Taftmaschine
WO2017051357A1 (fr) * 2015-09-25 2017-03-30 Jeffrey Niemann Aiguille à tricoter
WO2018074930A1 (fr) * 2016-10-21 2018-04-26 Desso Sports B.V. Procédé et dispositif pour introduire des fibres de type fil dans le sol, combinaison d'un élément de substrat et d'un groupe de fibres de type fil, et dispositif pour introduire des fibres de type fil dans le sol

Also Published As

Publication number Publication date
DE202020107543U1 (de) 2022-03-29
EP4267788A1 (fr) 2023-11-01

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