EP2280106A1 - Textile tool with temporary protection - Google Patents

Textile tool with temporary protection Download PDF

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Publication number
EP2280106A1
EP2280106A1 EP09166881A EP09166881A EP2280106A1 EP 2280106 A1 EP2280106 A1 EP 2280106A1 EP 09166881 A EP09166881 A EP 09166881A EP 09166881 A EP09166881 A EP 09166881A EP 2280106 A1 EP2280106 A1 EP 2280106A1
Authority
EP
European Patent Office
Prior art keywords
textile tool
tool according
cap
textile
protective
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
EP09166881A
Other languages
German (de)
French (fr)
Other versions
EP2280106B1 (en
Inventor
Eric Jürgens
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.)
Groz Beckert KG
Original Assignee
Groz Beckert 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
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Priority to EP09166881A priority Critical patent/EP2280106B1/en
Priority to AT09166881T priority patent/ATE545724T1/en
Priority to KR1020100072709A priority patent/KR101190030B1/en
Priority to CN201010278405.3A priority patent/CN101988235B/en
Publication of EP2280106A1 publication Critical patent/EP2280106A1/en
Application granted granted Critical
Publication of EP2280106B1 publication Critical patent/EP2280106B1/en
Active 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
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/02—Machine needles
    • 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

Definitions

  • the invention relates to a textile tool having a point or edge or a stitch-forming part.
  • Textile tools often have very fine structures, such as in particular tips, edges, hooks, tongues and the like, which must be particularly stable.
  • the stability is achieved for example by appropriate wear protection layers that extend over tips, hooks, tongues or cutting the textile tool away.
  • wear protection layers such as chrome plating, metal overlays, hard coatings or the like provide a high abrasion resistance.
  • these wear protection layers thus lend the textile tool increased robustness, they can unexpectedly increase the sensitivity of the textile tool to atypical loads.
  • wear protection layers in particular in the region of large curvatures, such as points, hooks or edges, at untypical loads, such as impact or impact or in contact with other hard objects, such as other textile tools, tend to flake off.
  • wear protection layer often go unnoticed, especially if the chrome layer has only loosened but not fallen off.
  • suitable wear-resistant coatings increase the useful life of a textile tool, they may at the same time increase the sensitivity of the textile tool to harsh handling, particularly during shipping or assembly.
  • the textile tool according to the invention has a body on which at least one tip or cutting edge or a stitch-forming part, for example, consisting of a hook and a tongue, is formed.
  • a wear protection layer is provided on the body, which extends at least over the tip or the cutting edge.
  • the wear protection layer is eg a metal layer, eg a chromium layer.
  • the tip, the cutting edge or the stitch-forming part is provided with a cap made of a removable protective compound.
  • This cap preferably completely covers the tip, the cutting edge or the stitch-forming part and thus protects them against damage by impact or impact.
  • the textile tool in question for example needle, knitting needle, loop taker or knitting needle
  • the textile tool in question for example needle, knitting needle, loop taker or knitting needle
  • the textile tool in question for example needle, knitting needle, loop taker or knitting needle
  • the formation of microcracks in the wear protection layer is prevented.
  • the protective compound preferably adheres adhesively to the stitch-forming part, the point or the cutting edge and their immediate surroundings.
  • the protective compound forms a damping elastic or plastic body.
  • it consists of plastic, for example a thermoplastic hot-dip mass.
  • the protective compound forms a thick-film coating.
  • the layer formed by the protective compound is significantly thicker than the wear protection layer.
  • the thickness of the protective compound exceeds 10 times the thickness of the wear protection layer. Regardless and preferably, the thickness of the protective compound (measured perpendicular to the surface of the textile tool) is greater than the radius of curvature of the tip or blade.
  • the cap consisting of the removable protective compound is preferably formed by solidified, previously liquid and therefore informal protective compound.
  • the cap is formed, for example, by a solidified protective drop. If the part of the textile tool to be protected is a cutting edge, the cap is preferably formed by a bead consisting of solidified formerly liquid and thus informal protective compound.
  • the protective composition is thermally liquefied for application to the textile tool. It is possible to apply the protection compound cap in a single application. It may also be desirable to form the cap (i.e., the drop or the bead) by a plurality of successively applied protective layers.
  • the protective compound layer can be applied to the textile tool by brief immersion of the textile tool in liquid protective compound. It is also possible to spread the protective compound on the textile tool, drip or spray.
  • FIG. 1 is an exemplary representative of a textile tool 1 a knitting needle 2 shown in fragmentary form.
  • the term "textile tool” 1 but is general understood any tool that is used in the textile industry for acting on threads or threads of existing material. Textile tools are in this sense, in particular knitting needles, such as latch needles or needles or tongeless needles, sewing needles, knitting needles, felting needles, tufting needles, loop grabs, tufting knives, strands, slats or the like.
  • the knitting needle 2 has a body 3, which preferably consists of steel. At one end 4, which acts on a textile and a thread and therefore forms the operative portion, the body 3 is provided with a point 5, in the vicinity of which a hook 6 can be provided. At least in the region of the tip 5, but preferably on the entire end 4 or over a larger area of the body 3 or over the entire surface of the body 3 is provided with a wear protection layer 12, consisting of FIG. 4 is apparent. This can be formed, for example, by a galvanically applied chromium layer. Additionally or alternatively, other wear protection layers of other metals, alloys or compounds may be provided.
  • the tip 5 is provided with a preferably approximately spherical or teardrop-shaped cap 7, which is drop-shaped in the present embodiment, but may also have any other suitable shape.
  • the cap 7 consists of a protective compound.
  • the protective compound is preferably a viscoplastic plastic material adhering to the surface of the body 3, preferably based on hydrocarbons.
  • the protective composition may be a thermoplastic polymer. It may, for example, form a teardrop-shaped cap which covers the tip 5 and the parts immediately adjacent to the tip 5.
  • FIG. 2 illustrates the cap 7 from a different perspective. It can be seen that the cap 7 has a large layer thickness, which is preferably greater than the thickness of the region of the body 3 adjoining the tip 5.
  • FIG. 3 illustrates the cap 7 again in perspective. It hollows the entire area of the body 3 to be protected at the end 4.
  • the material of the cap 7 is preferably such that it can be wiped off with a soft tool, for example a plastic scraper. In this case, the cap 7 may crumble or be stripped off the end 4 as a whole.
  • the adhesion of the cap 7 to the surface of the body 3 is preferably at least so great that it does not fall off the body 3 during transportation or during installation of the knitting needle 2.
  • cap 7 It is also possible to adjust the adhesion and the strength of the cap 7 so that it is replaced when starting the knitting needle 2 when piercing a textile web of the body 3 alone. In addition, it is possible to liquefy the cap 7 as needed with a solvent or by the action of heat and so to remove.
  • the cap 7 may also be formed so large that they not only on the outermost tip 5 of the knitting needle but over a larger Part of their end 4 extends. If necessary, the cap 7 can encase further structures of the knitting needle 2, such as its hook 6 mit.
  • FIG. 6 illustrates as another example of a textile tool 1 a loop taker 8, which consists of one or more parts and is provided for a tufting machine.
  • the loop taker 8 has a cutting edge 9 in the vicinity of a gripper section 10.
  • the cutting edge 9 can be formed directly on the body 3 or on a part received by the body 3, for example a cemented carbide insert (not further illustrated).
  • the cutting edge 9 is in turn before the first use of the loop taker 8 with a FIG. 7 apparent cap 11 provided, which consists of the protective compound.
  • the cap 11 extends along the entire cutting edge 9.
  • the cap 11 is preferably formed as a bead or "bead". With regard to the nature, strength and the treatment of the cap 11, the above statements apply to the cap 7 accordingly.
  • FIG. 8 Figure 3 illustrates the body 3 of the loop taker 8 and the wear protection layer 12 present on the body 3.
  • the cap 11 extends around the cutting edge 9 and thus protects it from mechanical damage until the cap 11 is in one of the above manners or by cooperation a not further illustrated cutting blade or thread with the cutting edge 9 is removed.
  • the perpendicular to the surface of the textile tool 1 to be measured thickness of the protective layer is greater, preferably at least ten times greater than the thickness of the wear protection layer 12. Additionally or alternatively, the thickness of the protective layer is greater, preferably at least ten times as great as the radius of curvature R of the cutting edge 9.
  • the radius of curvature R of the tip 5 or the blade 9 is typically small. Preferably, it is between fractions of a micrometer to a few 10 microns.
  • the radii of curvature R can also be larger. In particular, this may be the case when provided as a "cutting edge" edges with the protective layer, which should not cut a textile thread. Such edges are e.g. Sliding edges.
  • the tip 5 may have a larger radius of curvature R, e.g. is designed as a ball tip or the like.
  • FIG. 9 a further embodiment of the invention in an application in a knitting needle 14 can be seen.
  • This has a stitch-forming part 15 which comprises a hook 16 and a pivotally mounted tongue 17.
  • the stitch-forming part 15 is the active portion of the knitting needle 14.
  • the tongue 17 is only one example of a hook associated with the closing member 18. Instead of the tongue 17 may serve as a closing member, for example, a slider.
  • a cap 7 is provided, which envelops here at least the hook 16 or the closing member 18, but preferably the entire stitch-forming part.
  • the cap 7 is for temporary protection only. For their nature, reference is made to the previous description.
  • the thickness of the wear protection layer may at least preferably be in the range of 1 ⁇ m to 300 ⁇ m.
  • a wear protection layer 12 is provided, which extends over a cutting edge 9 or a tip 5 of time.
  • the tip 5 or cutting edge 9 is provided with a cap 7 or 11 of a protective mass, which is preferably formed tough plastic and may have a damping character.
  • the cap 7, 11 is preferably easily removable. For example, it dissolves in the first use of the textile tool in whole or in parts of the textile tool 1.
  • the protective composition is preferably a hot dip compound, for example on a thermoplastic basis.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Knitting Machines (AREA)
  • Sewing Machines And Sewing (AREA)
  • Emergency Lowering Means (AREA)

Abstract

The tool has a body (3) at which a working section (4) e.g. machined part of working needle or head of needle or edge of loop gripper, is formed. A wear protection layer i.e. chromium layer, is provided at the working section. A cover (7) made of removable shock-absorbing protective mass e.g. plastic or thermoplastic hot-dip coating or thick-layer coating, is attached to the working section. The machined part comprises hooks (6) and a locking element i.e. slider. The cover is a coil provided along an edge of the loop gripper.

Description

Die Erfindung betrifft ein Textilwerkzeug, das eine Spitze oder Schneide oder einen maschenbildenden Teil aufweist.The invention relates to a textile tool having a point or edge or a stitch-forming part.

Textilwerkzeuge haben häufig sehr feine Strukturen, wie insbesondere Spitzen, Schneiden, Haken, Zungen und dergleichen, die besonders standfest sein müssen. Die Standfestigkeit wird beispielsweise durch entsprechende Verschleißschutzschichten erzielt, die sich über Spitzen, Haken, Zungen oder Schneiden des Textilwerkzeugs weg erstrecken. Insbesondere erbringen solche Verschleißschutzschichten, wie Chromauflagen, Metallauflagen, Hartstoffauflagen oder Ähnliches eine hohe Abrasionsfestigkeit. Obwohl diese Verschleißschutzschichten dem Textilwerkzeug somit eine erhöhte Robustheit verleihen, können sie doch die Empfindlichkeit des Textilwerkzeugs gegen untypische Belastungen unerwartet erhöhen. Beispielsweise können Verschleißschutzschichten, insbesondere im Bereich großer Krümmungen, wie Spitzen, Haken oder Schneiden, bei untypischen Belastungen, wie Schlag oder Stoß oder bei Berührung mit anderen harten Gegenständen, wie andere Textilwerkzeugen, zum Abplatzen neigen. Solche Abplatzer der Verschleißschutzschicht bleiben häufig unbemerkt, insbesondere, wenn die Chromschicht nur gelockert aber noch nicht abgefallen ist. Während geeignete Verschleißschutzschichten somit die Einsatzdauer eines Textilwerkzeugs erhöhen, können sie unter Umständen zugleich die Empfindlichkeit des Textilwerkzeugs gegen raue Behandlung, insbesondere während des Transports oder der Montage erhöhen.Textile tools often have very fine structures, such as in particular tips, edges, hooks, tongues and the like, which must be particularly stable. The stability is achieved for example by appropriate wear protection layers that extend over tips, hooks, tongues or cutting the textile tool away. In particular, such wear protection layers, such as chrome plating, metal overlays, hard coatings or the like provide a high abrasion resistance. Although these wear protection layers thus lend the textile tool increased robustness, they can unexpectedly increase the sensitivity of the textile tool to atypical loads. For example, wear protection layers, in particular in the region of large curvatures, such as points, hooks or edges, at untypical loads, such as impact or impact or in contact with other hard objects, such as other textile tools, tend to flake off. Such chipping the wear protection layer often go unnoticed, especially if the chrome layer has only loosened but not fallen off. Thus, while suitable wear-resistant coatings increase the useful life of a textile tool, they may at the same time increase the sensitivity of the textile tool to harsh handling, particularly during shipping or assembly.

Es ist bekannt, mehrere Textilwerkzeuge, insbesondere Strickwerkzeuge, zum Zwecke des Versands zu einem Block zusammenzufassen. Dazu stellt die EP 1 486 600 A1 verschiedene Möglichkeiten vor. Beispielsweise werden dort Stricknadeln mittels einer beispielsweise durch Lack oder Klebstoff bewirkten Klebeverbindung zu einer größeren Einheit zusammengefasst, in der die einzelnen Stricknadeln geordnet beieinander gehalten sind. Auf diese Weise kann vermieden werden, dass die einzelnen Strickwerkzeuge während des Transports gegeneinander stoßen und sich gegenseitig beschädigen. Insbesondere wird auf diese Weise die Gefahr von Beschädigungen der Hakenspitzen der Strickwerkzeuge zumindest so lange etwas gemindert, wie die Strickwerkzeuge miteinander verbunden sind. Jedoch können die Strickwerkzeuge durch Fremdeinwirkung auch beschädigt werden, wenn sie im Block gehalten sind.It is known to combine several textile tools, in particular knitting tools, for the purpose of shipping to a block. This is what the EP 1 486 600 A1 different possibilities. For example, there knitting needles are summarized by means of an example caused by lacquer or adhesive adhesive bond to form a larger unit in which the individual knitting needles are kept in an orderly manner. In this way it can be avoided that the individual knitting tools butt against each other during transport and damage each other. In particular, in this way the risk of damage to the hook tips of the knitting tools is at least as long as something mitigated, as the knitting tools are connected together. However, the knitting tools may also be damaged by foreign influence if they are held in the block.

Den Einsatz von Klebelacken oder Klebstoffen zur temporären Verbindung von einzelnen Teilen eines Stricksystems zeigt die EP 1 298 238 B1 . Hier dienen Klebverbindungen zwischen Auswahlteilen und den Stricknadeln zur Montageerleichterung, um die genannten Teile vor dem Einsetzen in die Strickmaschine zusammenzuhalten.The use of adhesive lacquers or adhesives for the temporary connection of individual parts of a knitting system shows the EP 1 298 238 B1 , Here are adhesive joints between selections and the knitting needles for ease of assembly to hold the said parts together before insertion into the knitting machine.

Davon ausgehend ist es Aufgabe der Erfindung ein Konzept zum Schutz von Textilwerkzeugen wenigstens während des Transports und dem isolierten Handling vor dem Einbauen in Textilmaschinen und/oder während des Einbaus anzugeben.On this basis, it is an object of the invention to provide a concept for the protection of textile tools at least during transport and the isolated handling prior to installation in textile machines and / or during installation.

Diese Aufgabe wird mit dem Textilwerkzeug nach Anspruch 1 gelöst:This object is achieved with the textile tool according to claim 1:

Das erfindungsgemäße Textilwerkzeug weist einen Körper auf, an dem wenigstens eine Spitze oder Schneide oder ein maschenbildender Teil, z.B. bestehend aus einem Haken und einer Zunge, ausgebildet ist. Außerdem ist an dem Körper eine Verschleißschutzschicht vorgesehen, die sich wenigstens über die Spitze oder die Schneide erstreckt. Die Verschleißschutzschicht ist z.B. eine Metallschicht, z.B. eine Chromschicht.The textile tool according to the invention has a body on which at least one tip or cutting edge or a stitch-forming part, for example, consisting of a hook and a tongue, is formed. In addition, a wear protection layer is provided on the body, which extends at least over the tip or the cutting edge. The wear protection layer is eg a metal layer, eg a chromium layer.

Die Spitze, die Schneide oder der maschenbildende Teil ist mit einer Kappe aus einer entfernbaren Schutzmasse versehen. Diese Kappe bedeckt die Spitze, die Schneide bzw. den maschenbildenden Teil vorzugsweise ganz und schützt diese somit gegen Beschädigung durch Stoß oder Schlag. Andere harte Gegenstände, die während des Transports oder bei der Montage auf das Textilwerkzeug, insbesondere seine Spitze oder Schneide bzw. seinen maschenbildenden Teil einwirken, können somit kaum noch Beschädigungen der Verschleißschutzschicht bewirken. Auf diese Weise wird vermieden, dass das betreffende Textilwerkzeug (z.B. Nadel, Wirknadel, Schlingengreifer oder Stricknadel)während des Transports oder bei der Montage auf eine Weise vorgeschädigt wird, die dann während des Einsatzes zu dem vorzeitigen Verschleiß des Textilwerkzeugs führen könnte. Insbesondere wird die Entstehung von Mikrorissen in der Verschleißschutzschicht verhindert. Ebenso wird verhindert, dass sich Teile der Verschleißschutzschicht teilweise oder ganz lösen und somit das Material des darunter liegenden Körpers dem abrasiven Angriff von Textilfäden ausgesetzt wird. Wenn der maschenbildende Teil eines Strickwerkzeugs entsprechend von Schutzmasse eingehüllt ist, wird weiter verhindert, dass Haken und/Zunge von Stricknadeln beschädigt werden.The tip, the cutting edge or the stitch-forming part is provided with a cap made of a removable protective compound. This cap preferably completely covers the tip, the cutting edge or the stitch-forming part and thus protects them against damage by impact or impact. Other hard objects that act on the textile tool, in particular its tip or blade or its mesh-forming part during transport or during assembly, thus can hardly cause damage to the wear protection layer. In this way it is avoided that the textile tool in question (for example needle, knitting needle, loop taker or knitting needle) is pre-damaged during transport or assembly in a manner which could lead to premature wear of the textile tool during use. In particular, the formation of microcracks in the wear protection layer is prevented. It is also prevented that parts of the wear protection layer partially or completely dissolve and thus the material of the underlying body is exposed to the abrasive attack of textile threads. If the stitch forming part of a knitting tool is covered with protective compound, the hook and / or the tongue are further prevented from being damaged by knitting needles.

Die Schutzmasse haftet vorzugsweise adhäsiv an dem maschenbildenden Teil, der Spitze oder der Schneide und ihrer unmittelbaren Umgebung. Die Schutzmasse bildet dabei einen dämpfenden elastischen oder auch plastischen Körper. Vorzugsweise besteht sie aus Kunststoff, zum Beispiel einer thermoplastischen Schmelztauchmasse. Die Schutzmasse bildet dabei eine Dickschichtbeschichtung. Vorzugsweise ist die von der Schutzmasse gebildete Schicht deutlich dicker als die Verschleißschutzschicht. Vorzugsweise übersteigt die Dicke der Schutzmasse das 10 fache der Dicke der Verschleißschutzschicht. Unabhängig davon und vorzugsweise ist die Dicke der Schutzmasse (gemessen senkrecht zu der Oberfläche des Textilwerkzeugs) größer als der Krümmungsradius der Spitze oder Schneide.The protective compound preferably adheres adhesively to the stitch-forming part, the point or the cutting edge and their immediate surroundings. The protective compound forms a damping elastic or plastic body. Preferably it consists of plastic, for example a thermoplastic hot-dip mass. The protective compound forms a thick-film coating. Preferably, the layer formed by the protective compound is significantly thicker than the wear protection layer. Preferably, the thickness of the protective compound exceeds 10 times the thickness of the wear protection layer. Regardless and preferably, the thickness of the protective compound (measured perpendicular to the surface of the textile tool) is greater than the radius of curvature of the tip or blade.

Die aus der entfernbaren Schutzmasse bestehende Kappe wird vorzugsweise durch erstarrte, zuvor flüssige und somit formlose Schutzmasse gebildet. An einer Spitze wird die Kappe beispielsweise durch einen erstarrten Schutzmassetropfen gebildet. Ist die zu schützende Partie des Textilwerkzeugs eine Schneide, wird die Kappe vorzugsweise durch eine Wulst bestehend aus erstarrter vormals flüssiger und somit formloser Schutzmasse gebildet.The cap consisting of the removable protective compound is preferably formed by solidified, previously liquid and therefore informal protective compound. At a tip, the cap is formed, for example, by a solidified protective drop. If the part of the textile tool to be protected is a cutting edge, the cap is preferably formed by a bead consisting of solidified formerly liquid and thus informal protective compound.

Vorzugsweise wird die Schutzmasse zum Aufbringen auf das Textilwerkzeug thermisch verflüssigt. Es ist möglich, die Kappe aus Schutzmasse in einem einzigen Auftrag aufzubringen. Es kann auch zweckmäßig sein, die Kappe (d.h. den Tropfen oder die Wulst) durch mehrere nacheinander aufgebrachte Schutzmasseschichten zu bilden. Die Schutzmasseschicht kann durch kurzzeitiges Eintauchen des Textilwerkzeugs in flüssige Schutzmasse auf das Textilwerkzeug aufgebracht werden. Es ist auch möglich, die Schutzmasse auf das Textilwerkzeug aufzustreichen, aufzutropfen oder aufzusprühen.Preferably, the protective composition is thermally liquefied for application to the textile tool. It is possible to apply the protection compound cap in a single application. It may also be desirable to form the cap (i.e., the drop or the bead) by a plurality of successively applied protective layers. The protective compound layer can be applied to the textile tool by brief immersion of the textile tool in liquid protective compound. It is also possible to spread the protective compound on the textile tool, drip or spray.

Weitere Einzelheiten vorteilhafter Ausführungsformen der Erfindung ergeben sich aus der Zeichnung, der Beschreibung oder Ansprüchen. Die Beschreibung beschränkt sich dabei auf wesentliche Aspekte der Erfindung und sonstiger Gegebenheiten. Die Zeichnung ist ergänzend heranzuziehen. Es zeigen:

  • Figur 1 eine Wirknadel in ausschnittsweiser Seitenansicht mit einer Schutzkappe,
  • Figur 2 die Wirknadel nach Figur 1 in Draufsicht mit einer Kappe aus Schutzmasse,
  • Figur 3 eine ausschnittsweise perspektivische Darstellung der Wirknadel nach Figur 1 und 2,
  • Figur 4 die Spitze des Textilwerkzeugs nach Figur 1 bis 3 in ausschnittweiser vergrößerter Schnittansicht,
  • Figur 5 eine ausschnittsweise perspektivische Darstellung der Wirknadel nach Figur 1 und 2 mit vergrößerter Schutzkappe,
  • Figur 6 einen Schlingengreifer in Seitenansicht,
  • Figur 7 den Schlingengreifer nach Figur 6 mit einer Kappe aus Schutzmasse an einer Schneide, in perspektivischer ausschnittsweiser Darstellung,
  • Figur 8 eine ausschnittsweise Schnittdarstellung des Schlingengreifers nach Figur 7 in vergrößerter Darstellung, und
  • Figur 9 eine Stricknadel in ausschnittsweiser Perspektivansicht mit einer Schutzkappe.
Further details of advantageous embodiments of the invention will become apparent from the drawings, the description or claims. The description is limited to essential aspects of the invention and other circumstances. The drawing is to be used as a supplement. Show it:
  • FIG. 1 a knitting needle in a sectional side view with a protective cap,
  • FIG. 2 the knitting needle after FIG. 1 in plan view with a cap of protective material,
  • FIG. 3 a fragmentary perspective view of the knitting needle according to FIGS. 1 and 2 .
  • FIG. 4 the tip of the textile tool Figure 1 to 3 in a sectioned enlarged sectional view,
  • FIG. 5 a fragmentary perspective view of the knitting needle according to FIGS. 1 and 2 with enlarged protective cap,
  • FIG. 6 a loop grab in side view,
  • FIG. 7 the looper FIG. 6 with a cap of protective material on a cutting edge, in perspective cutout representation,
  • FIG. 8 a partial sectional view of the loop taker after FIG. 7 in an enlarged view, and
  • FIG. 9 a knitting needle in a fragmentary perspective view with a protective cap.

In Figur 1 ist als beispielhafter Vertreter für ein Textilwerkzeug 1 eine Wirknadel 2 ausschnittsweise dargestellt. Unter dem Begriff "Textilwerkzeug" 1 wird aber allgemein jedes Werkzeug verstanden, das in der Textilindustrie zum Einwirken auf Fäden oder aus Fäden bestehendem Material genutzt wird. Textilwerkzeuge sind in diesem Sinne, insbesondere Stricknadeln, beispielsweise Zungennadeln oder Schiebernadeln oder auch zungenlose Nadeln, Nähnadeln, Wirknadeln, Filznadeln, Tufting-Nadeln, Schlingengreifer, Tufting-Messer, Litzen, Lamellen oder dergleichen.In FIG. 1 is an exemplary representative of a textile tool 1 a knitting needle 2 shown in fragmentary form. The term "textile tool" 1 but is general understood any tool that is used in the textile industry for acting on threads or threads of existing material. Textile tools are in this sense, in particular knitting needles, such as latch needles or needles or tongeless needles, sewing needles, knitting needles, felting needles, tufting needles, loop grabs, tufting knives, strands, slats or the like.

Die Wirknadel 2 weist einen Körper 3 auf, der vorzugsweise aus Stahl besteht. An einem Ende 4, das der Einwirkung auf ein Textil und einen Faden dient und deshalb den Wirkabschnitt bildet, ist der Körper 3 mit einer Spitze 5 versehen, in deren Nachbarschaft ein Haken 6 vorgesehen sein kann. Zumindest im Bereich der Spitze 5, vorzugsweise aber an dem gesamten Ende 4 oder auch über eine größere Fläche des Körpers 3 oder über dessen gesamte Oberfläche ist der Körper 3 mit einer Verschleißschutzschicht 12 versehen, die aus Figur 4 ersichtlich ist. Diese kann beispielsweise durch eine galvanisch aufgebrachte Chromschicht gebildet sein. Zusätzlich oder alternativ können auch andere Verschleißschutzschichten aus anderen Metallen, Legierungen oder Verbindungen vorgesehen sein.The knitting needle 2 has a body 3, which preferably consists of steel. At one end 4, which acts on a textile and a thread and therefore forms the operative portion, the body 3 is provided with a point 5, in the vicinity of which a hook 6 can be provided. At least in the region of the tip 5, but preferably on the entire end 4 or over a larger area of the body 3 or over the entire surface of the body 3 is provided with a wear protection layer 12, consisting of FIG. 4 is apparent. This can be formed, for example, by a galvanically applied chromium layer. Additionally or alternatively, other wear protection layers of other metals, alloys or compounds may be provided.

Die Spitze 5 ist mit einer vorzugsweise näherungweise kugel- oder tropfenförmigen Kappe 7 versehen, die im vorliegenden Ausführungsbeispiel tropfenförmig ausgebildet ist, aber auch jede andere geeignete Form aufweisen kann. Die Kappe 7 besteht aus einer Schutzmasse. Die Schutzmasse ist vorzugsweise eine zähplastische an der Oberfläche des Körpers 3 haftende Kunststoffmasse, vorzugsweise auf Kohlenwasserstoffbasis. Die Schutzmasse kann ein thermoplastisches Polymer sein. Sie kann zum Beispiel eine tropfenförmige Kappe bilden, die die Spitze 5 und die an die Spitze 5 unmittelbar anschließenden Partien abdeckt.The tip 5 is provided with a preferably approximately spherical or teardrop-shaped cap 7, which is drop-shaped in the present embodiment, but may also have any other suitable shape. The cap 7 consists of a protective compound. The protective compound is preferably a viscoplastic plastic material adhering to the surface of the body 3, preferably based on hydrocarbons. The protective composition may be a thermoplastic polymer. It may, for example, form a teardrop-shaped cap which covers the tip 5 and the parts immediately adjacent to the tip 5.

Wie in Figur 4 angedeutet ist, ist die Dicke der Schutzmasse der Kappe 7, gemessen senkrecht zu der Oberfläche der Wirknadel 2, deutlich größer, vorzugsweise mehr als zehn mal so groß wie der Krümmungsradius R der Spitze 5. Außerdem ist die Schutzmasseschicht, die die Kappe 7 bildet, vorzugsweise wesentlich dicker, vorzugsweise mehr als zehnmal so dick wie die Verschleißschutzschicht 12.As in FIG. 4 is indicated, the thickness of the protective composition of the cap 7, measured perpendicular to the surface of the knitting needle 2, significantly larger, preferably more than ten times as large as the radius of curvature R of the tip 5. In addition, the protective layer, forming the cap 7, preferably substantially thicker, preferably more than ten times as thick as the wear protection layer 12.

Figur 2 veranschaulicht die Kappe 7 aus anderer Perspektive. Es ist ersichtlich, dass die Kappe 7 eine große Schichtdicke aufweist, die vorzugsweise größer ist als die Dicke des an die Spitze 5 anschließenden Bereichs des Körpers 3. FIG. 2 illustrates the cap 7 from a different perspective. It can be seen that the cap 7 has a large layer thickness, which is preferably greater than the thickness of the region of the body 3 adjoining the tip 5.

Figur 3 veranschaulicht die Kappe 7 nochmals perspektivisch. Sie höhlt den gesamten zu schützenden Bereich des Körpers 3 an dem Ende 4 ein. Das Material der Kappe 7 ist vorzugsweise so beschaffen, dass es sich mit einem weichen Werkzeug, beispielsweise einem Kunststoffschaber abstreifen lässt. Dabei kann die Kappe 7 zerbröseln oder auch im Ganzen von dem Ende 4 abgestreift werden. Die Haftung der Kappe 7 an der Oberfläche des Körpers 3 ist jedoch vorzugsweise wenigstens so groß, dass sie während des Transports oder beim Einbau der Wirknadel 2 nicht von dem Körper 3 abfällt. FIG. 3 illustrates the cap 7 again in perspective. It hollows the entire area of the body 3 to be protected at the end 4. The material of the cap 7 is preferably such that it can be wiped off with a soft tool, for example a plastic scraper. In this case, the cap 7 may crumble or be stripped off the end 4 as a whole. However, the adhesion of the cap 7 to the surface of the body 3 is preferably at least so great that it does not fall off the body 3 during transportation or during installation of the knitting needle 2.

Es ist auch möglich die Haftung und die Festigkeit der Kappe 7 so einzustellen, dass sie bei Inbetriebnahme der Wirknadel 2 beim Durchstechen einer Textilbahn von allein von dem Körper 3 abgelöst wird. Außerdem ist es möglich, die Kappe 7 bedarfsweise mit einem Lösungsmittel oder durch Wärmeeinwirkung zu verflüssigen und so zu entfernen.It is also possible to adjust the adhesion and the strength of the cap 7 so that it is replaced when starting the knitting needle 2 when piercing a textile web of the body 3 alone. In addition, it is possible to liquefy the cap 7 as needed with a solvent or by the action of heat and so to remove.

Wie Figur 5 veranschaulicht, kann die Kappe 7 auch so groß ausgebildet sein, dass sie sich nicht nur auf die äußerste Spitze 5 der Wirknadel sondern über einen größeren Teil ihres Endes 4 erstreckt. Die Kappe 7 kann bedarfsweise weitere Strukturen der Wirknadel 2, wie z.B. deren Haken 6mit einhüllen.As FIG. 5 illustrated, the cap 7 may also be formed so large that they not only on the outermost tip 5 of the knitting needle but over a larger Part of their end 4 extends. If necessary, the cap 7 can encase further structures of the knitting needle 2, such as its hook 6 mit.

Figur 6 veranschaulicht als weiteres Beispiel für ein Textilwerkzeug 1 einen Schlingengreifer 8, der aus einem oder mehreren Teilen besteht und für eine Tuftingmaschine vorgesehen ist. Im vorliegenden Ausführungsbeispiel hat der Schlingengreifer 8 eine Schneidkante 9 in der Nähe eines Greiferabschnitts 10. Die Schneidkante 9 kann unmittelbar an dem Körper 3 oder an einem von dem Körper 3 aufgenommenen Teil, z.B. einem nicht weiter veranschaulichten Hartmetalleinsatz ausgebildet sein. Die Schneidkante 9 ist vor dem ersten Einsatz des Schlingengreifers 8 wiederum mit einer aus Figur 7 ersichtlichen Kappe 11 versehen, die aus der Schutzmasse besteht. Die Kappe 11 erstreckt sich entlang der gesamten Schneidkante 9. Die Kappe 11 ist vorzugsweise als Wulst oder "Raupe" ausgebildet. Hinsichtlich der Beschaffenheit, Festigkeit und der Behandlung der Kappe 11 gelten die obigen Ausführungen zu der Kappe 7 entsprechend. FIG. 6 illustrates as another example of a textile tool 1 a loop taker 8, which consists of one or more parts and is provided for a tufting machine. In the present exemplary embodiment, the loop taker 8 has a cutting edge 9 in the vicinity of a gripper section 10. The cutting edge 9 can be formed directly on the body 3 or on a part received by the body 3, for example a cemented carbide insert (not further illustrated). The cutting edge 9 is in turn before the first use of the loop taker 8 with a FIG. 7 apparent cap 11 provided, which consists of the protective compound. The cap 11 extends along the entire cutting edge 9. The cap 11 is preferably formed as a bead or "bead". With regard to the nature, strength and the treatment of the cap 11, the above statements apply to the cap 7 accordingly.

Figur 8 veranschaulicht den Körper 3 des Schlingengreifers 8 und die auf dem Körper 3 vorhandene Verschleißschutzschicht 12. Wie ersichtlich erstreckt sich die Kappe 11 um die Schneidkante 9 herum und schützt diese somit vor mechanischer Beschädigung, bis die Kappe 11 auf eine der oben genannten Weisen oder durch Zusammenwirkung eines nicht weiter veranschaulichten Schneidmessers oder Fadens mit der Schneidkante 9 entfernt wird. Die Schneidkante 9 bildet hier den Wirkabschnitt des Schlingengreifers 8. Wiederum ist die senkrecht zur Oberfläche des Textilwerkzeugs 1 zu messende Dicke der Schutzmasseschicht größer, vorzugsweise mindestens zehnmal so groß als die Dicke der Verschleißschutzschicht 12. Zusätzlich oder alternativ ist die Dicke der Schutzmasseschicht größer, vorzugsweise mindestens zehnmal so groß wie der Krümmungsradius R der Schneide 9. FIG. 8 Figure 3 illustrates the body 3 of the loop taker 8 and the wear protection layer 12 present on the body 3. As can be seen, the cap 11 extends around the cutting edge 9 and thus protects it from mechanical damage until the cap 11 is in one of the above manners or by cooperation a not further illustrated cutting blade or thread with the cutting edge 9 is removed. Again, the perpendicular to the surface of the textile tool 1 to be measured thickness of the protective layer is greater, preferably at least ten times greater than the thickness of the wear protection layer 12. Additionally or alternatively, the thickness of the protective layer is greater, preferably at least ten times as great as the radius of curvature R of the cutting edge 9.

Der Krümmungsradius R der Spitze 5 oder der Schneide 9 ist typischerweise gering. Vorzugsweise liegt er zwischen Bruchteilen eines Mikrometers bis zu wenigen 10 µm. Die Krümmungsradien R können aber auch größer sein. Insbesondere kann dies der Fall sein, wenn als "Schneide" Kanten mit der Schutzmasseschicht versehen werden, die einen Textilfaden nicht zerschneiden sollen. Solche Kanten sind z.B. Gleitkanten. Auch die Spitze 5 kann einen größeren Krümmungsradius R haben, wenn sie z.B. als Kugelspitze oder ähnliches ausgebildet ist.The radius of curvature R of the tip 5 or the blade 9 is typically small. Preferably, it is between fractions of a micrometer to a few 10 microns. The radii of curvature R can also be larger. In particular, this may be the case when provided as a "cutting edge" edges with the protective layer, which should not cut a textile thread. Such edges are e.g. Sliding edges. Also, the tip 5 may have a larger radius of curvature R, e.g. is designed as a ball tip or the like.

Aus Figur 9 ist eine weitere Ausführungsform der Erfindung in einer Anwendung bei einer Stricknadel 14 ersichtlich. Diese weist einen maschenbildenden Teil 15 auf, der einen Haken 16 und eine schwenkbar gelagerte Zunge 17 umfasst. Der maschenbildende Teil 15 ist der Wirkabschnitt der Stricknadel 14. Die Zunge 17 ist nur ein Beispiel für ein dem Haken zugeordnetes Schließorgan 18. Anstelle der Zunge 17 kann als Schließorgan z.B. auch ein Schieber dienen.Out FIG. 9 a further embodiment of the invention in an application in a knitting needle 14 can be seen. This has a stitch-forming part 15 which comprises a hook 16 and a pivotally mounted tongue 17. The stitch-forming part 15 is the active portion of the knitting needle 14. The tongue 17 is only one example of a hook associated with the closing member 18. Instead of the tongue 17 may serve as a closing member, for example, a slider.

Wiederum ist eine Kappe 7 vorgesehen, die hier mindestens den Haken 16 oder das Schließorgan 18, vorzugsweise aber den gesamten maschenbildenden Teil einhüllt. Die Kappe 7 dient nur dem temporären Schutz. Zu ihrer Beschaffenheit wird auf die vorige Beschreibung verwiesen.Again, a cap 7 is provided, which envelops here at least the hook 16 or the closing member 18, but preferably the entire stitch-forming part. The cap 7 is for temporary protection only. For their nature, reference is made to the previous description.

Bei allen vorstehend beschriebenen Ausführungsformen kann die Dicke der Verschleißschutzschicht zumindest vorzugsweise im Bereich von 1 µm bis 300µm liegen.In all the embodiments described above, the thickness of the wear protection layer may at least preferably be in the range of 1 μm to 300 μm.

An einem Textilwerkzeug 1 ist eine Verschleißschutzschicht 12 vorgesehen, die sich über eine Schneide 9 oder eine Spitze 5 hinweg erstreckt. Die Spitze 5 oder Schneide 9 ist mit einer Kappe 7 bzw. 11 aus einer Schutzmasse versehen, die vorzugsweise zähplastisch ausgebildet ist und einen dämpfenden Charakter haben kann. Die Kappe 7, 11 ist vorzugsweise leicht entfernbar. Beispielsweise löst sie sich bei dem ersten Gebrauch des Textilwerkzeugs im Ganzen oder in Teilen von dem Textilwerkzeug 1 ab. Die Schutzmasse ist vorzugsweise eine Schmelztauchmasse, beispielsweise auf thermoplastischer Basis.On a textile tool 1 is a wear protection layer 12 is provided, which extends over a cutting edge 9 or a tip 5 of time. The tip 5 or cutting edge 9 is provided with a cap 7 or 11 of a protective mass, which is preferably formed tough plastic and may have a damping character. The cap 7, 11 is preferably easily removable. For example, it dissolves in the first use of the textile tool in whole or in parts of the textile tool 1. The protective composition is preferably a hot dip compound, for example on a thermoplastic basis.

Bezugszeichen:Reference numerals:

11
Textilwerkzeugtextile tool
22
Wirknadelknitting needle
33
Körperbody
44
EndeThe End
55
Spitzetop
66
Hakenhook
77
Kappecap
88th
Schlingengreiferlooper
99
Schneidkantecutting edge
1010
Greiferabschnittgripper section
1111
Kappecap
1212
VerschleißschutzschichtWear protection layer
1414
Stricknadelknitting needle
1515
maschenbildender Teilstitch forming part
1616
Hakenhook
1717
Zungetongue
1818
Schließorganclosing member

Claims (15)

Textilwerkzeug (1)
mit einem Körper (3), an dem wenigstens ein Wirkabschnitt (4, 9, 15) ausgebildet ist,
mit einer an dem Wirkabschnitt (4, 9, 15) vorgesehenen Verschleißschutzschicht (12),
dadurch gekennzeichnet,
dass an dem Wirkabschnitt (4, 9, 15) eine Kappe (7, 11) aus einer entfernbaren Schutzmasse angebracht ist.Textile tool (1)
with a body (3) on which at least one active portion (4, 9, 15) is formed,
with a wear protection layer (12) provided on the active section (4, 9, 15),
characterized,
that on the active portion (4, 9, 15) a cap (7, 11) is mounted in a removable protective material. Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass der Wirkabschnitt (4, 8, 15) ein maschenbildender Teil (15) einer Stricknadel (14) ist.Textile tool according to claim 1, characterized in that the knitting section (4, 8, 15) is a stitch-forming part (15) of a knitting needle (14). Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass der maschenbildende Teil (15) einen Haken (16) und ein Schließorgan (18) umfasst.Textile tool according to claim 1, characterized in that the stitch-forming part (15) comprises a hook (16) and a closing member (18). Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass der Wirkabschnitt (4, 9, 15) eine Spitze (4) einer Nadel (2) ist.Textile tool according to claim 1, characterized in that the active portion (4, 9, 15) is a tip (4) of a needle (2). Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass der Wirkabschnitt (4, 9, 15) eine Schneide eines Schlingengreifers (10) ist.Textile tool according to claim 1, characterized in that the operative portion (4, 9, 15) is a cutting edge of a loop taker (10). Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Schutzmasse ein Kunststoff ist.Textile tool according to claim 1, characterized in that the protective compound is a plastic. Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Schutzmasse eine thermoplastische Schmelztauchmasse ist.Textile tool according to claim 1, characterized in that the protective compound is a thermoplastic hot-dip mass. Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Schutzmasse eine Dickschichtbeschichtung ist.Textile tool according to claim 1, characterized in that the protective compound is a thick-film coating. Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Schutzmasse stoßabsorbierend ausgebildet ist.Textile tool according to claim 1, characterized in that the protective compound is designed shock absorbing. Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Verschleißschutzschicht (12) eine Chromschicht ist.Textile tool according to claim 1, characterized in that the wear protection layer (12) is a chromium layer. Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Kappe (7, 11) aus Schutzmasse durch einen erstarrten Schutzmassetropfen gebildet ist.Textile tool according to claim 1, characterized in that the cap (7, 11) is formed from protective compound by a solidified protective mass drop. Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass das Textilwerkzeug (1) eine Nadel (2) ist.Textile tool according to claim 1, characterized in that the textile tool (1) is a needle (2). Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass das Textilwerkzeug (1) ein Schlingengreifer (8) für eine Tuftingmaschine ist.Textile tool according to claim 1, characterized in that the textile tool (1) is a loop taker (8) for a tufting machine. Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Kappe (11) eine entlang der Schneide (9) vorgesehene Wulst ist.Textile tool according to claim 1, characterized in that the cap (11) is a bead provided along the cutting edge (9). Textilwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Dicke der Schutzmasse der Kappe (7, 11), gemessen senkrecht zu der Oberfläche des Textilwerkzeugs (1), größer als der Krümmungsradius der Spitze (5) oder Schneide (9) ist.Textile tool according to claim 1, characterized in that the thickness of the protective compound of the cap (7, 11) measured perpendicular to the surface of the textile tool (1), greater than the radius of curvature of the tip (5) or cutting edge (9).
EP09166881A 2009-07-30 2009-07-30 Textile tool with temporary protection Active EP2280106B1 (en)

Priority Applications (4)

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EP09166881A EP2280106B1 (en) 2009-07-30 2009-07-30 Textile tool with temporary protection
AT09166881T ATE545724T1 (en) 2009-07-30 2009-07-30 TEXTILE TOOL WITH TEMPORARY PROTECTION
KR1020100072709A KR101190030B1 (en) 2009-07-30 2010-07-28 Textile tool with temporary protection
CN201010278405.3A CN101988235B (en) 2009-07-30 2010-07-29 Textile tool with temporary protection

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EP1298238B1 (en) 2001-09-28 2005-12-07 Groz-Beckert KG Mounting of a selecting element on the body of a system part
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ATE545724T1 (en) 2012-03-15
EP2280106B1 (en) 2012-02-15
KR101190030B1 (en) 2012-10-12
KR20110013273A (en) 2011-02-09
CN101988235A (en) 2011-03-23
CN101988235B (en) 2014-11-26

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