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EP1770193B1 - Barre pour un métier à mailles jetées et procédé de production - Google Patents

Barre pour un métier à mailles jetées et procédé de production Download PDF

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Publication number
EP1770193B1
EP1770193B1 EP20050021114 EP05021114A EP1770193B1 EP 1770193 B1 EP1770193 B1 EP 1770193B1 EP 20050021114 EP20050021114 EP 20050021114 EP 05021114 A EP05021114 A EP 05021114A EP 1770193 B1 EP1770193 B1 EP 1770193B1
Authority
EP
European Patent Office
Prior art keywords
grooves
auxiliary element
auxiliary member
bar
knitting
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.)
Not-in-force
Application number
EP20050021114
Other languages
German (de)
English (en)
Other versions
EP1770193A1 (fr
Inventor
Kresimir Mista
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.)
Karl Mayer Textilmaschinenfabrik GmbH
Original Assignee
Karl Mayer Textilmaschinenfabrik 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 Karl Mayer Textilmaschinenfabrik GmbH filed Critical Karl Mayer Textilmaschinenfabrik GmbH
Priority to EP20050021114 priority Critical patent/EP1770193B1/fr
Priority to DE200550010842 priority patent/DE502005010842D1/de
Priority to CN2006101595819A priority patent/CN1940160B/zh
Publication of EP1770193A1 publication Critical patent/EP1770193A1/fr
Application granted granted Critical
Publication of EP1770193B1 publication Critical patent/EP1770193B1/fr
Anticipated expiration legal-status Critical
Not-in-force legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars

Definitions

  • the invention relates to a knitting machine bar with a support of a first material and a knitting tool receiving auxiliary element made of a second material, wherein the auxiliary element is fixed with a mounting surface on the carrier. Furthermore, the invention relates to a method for producing a knitting machine Barre, in which one attaches an auxiliary element by means of a mounting surface on a support.
  • Such knitting machine barre and a method for their preparation are, for example DE 43 02 858 C1 known.
  • the auxiliary element is in this case provided with a plurality of grooves which extend substantially perpendicular to the longitudinal direction of the auxiliary element. After the auxiliary member is attached to the bar, it is divided into individual sections of a predetermined length.
  • DE 103 48 557 B3 shows a bar of a knitting machine, in which the auxiliary element also has grooves for receiving knitting tools.
  • the grooves pass through the auxiliary element almost completely, so that only one strip foot remains, the thickness of which is relatively low compared to the transverse dimension of the knitting tools.
  • Ingots of knitting machines are often made of different materials, namely the carrier made of a plastic, in particular in fiber-reinforced design, and a metal from which then the auxiliary element is formed. It makes use of the fact that you can form a carrier relatively massearm with plastic a required mechanical stability, while the auxiliary element made of metal can be made with the necessary precision so that the knitting tools can be arranged with the desired pitch.
  • knitting needles are inserted into grooves or slots made with high accuracy and pressed against the bottom of the groove with a lid.
  • the game between the flanks of the groove and the knitting needles may not exceed a predetermined level, usually 1/100 mm, but must be present. If the needle is thicker than the groove width, this leads to a bending of the webs remaining between the grooves. This complicates the insertion of other needles in adjacent grooves. However, if the needle is thinner than the width of the groove by more than the predetermined amount, the needles will not hold properly during assembly.
  • this auxiliary element is made of a metal, then it has a different thermal expansion than the carrier made of plastic. This leads in particular to problems if the bar has a greater length. In knitting machines bars with a length of over 6 m can occur.
  • the invention has for its object to maintain the pitch accuracy largely independent of the temperature.
  • the auxiliary element is subdivided into individual segments.
  • this subdivision is initially limited to the side facing the wearer.
  • the direction "diagonal" means that the direction of the grooves does not coincide with the longitudinal direction of the bar, which is synonymous with the longitudinal direction of the auxiliary element, but also does not coincide with the transverse or width direction of the auxiliary element.
  • a beginning of a groove has another one Distance to the end of the auxiliary element as the end of the groove.
  • the auxiliary element is then subdivided into individual sections in the longitudinal direction, without the stability of the auxiliary element during assembly, that is to say during attachment to the carrier, being appreciably impaired.
  • each knitting tool position extends over at least one groove. This gives a design rule for the angle at which the grooves extend to the longitudinal edge of the auxiliary tool. Preferably, all grooves are parallel to each other.
  • a distance between grooves maximally corresponds to a width of the auxiliary element.
  • the distance is measured perpendicular to the course of the grooves. With this dimensioning, although the surfaces remaining between the grooves have a length that is greater than the width of the auxiliary element. But it is much smaller than the total length of the auxiliary element, so that make thermal expansions only in a relatively small extent noticeable.
  • the distance between grooves is at most half of the width. The smaller the distance, the lower the effects of thermal expansion. However, the distance should not be too small, in order not to unduly impair the mechanical stability of the auxiliary element during assembly.
  • the knitting tools are arranged in grooves whose depth extends to the grooves.
  • Such an auxiliary element can then no longer transfer any appreciable forces to the carrier in the case of an expansion which is caused by heat change.
  • the change in length is evenly distributed within a section between grooves on all knitting tools. The length-dependent changes are hardly measurable due to the short dimensions of the remaining segments between the grooves and do not interfere in the active process.
  • the grooves have a depth which is at least 40% of the thickness of the auxiliary element.
  • the grooves enforce the auxiliary element practically over half. Depths of up to 60% are also permissible.
  • the auxiliary element and the carrier are glued together by an adhesive and the adhesive fills the grooves at least partially.
  • the area over which the adhesive can rest against the auxiliary element is increased.
  • the adhesive then in turn slightly increases the mechanical stability of the auxiliary element.
  • the adhesive fills the grooves out to the grooves.
  • the grooves are formed, when the auxiliary member is already connected to the carrier, burrs are prevented from forming at the bottom of the grooves during processing.
  • the invention is achieved in a method of the type mentioned above by generating diagonally extending grooves before fastening in the mounting surface.
  • the diagonal grooves divide the auxiliary element in any case over part of its thickness into individual segments whose length is substantially less than the total length of the auxiliary element. Accordingly, thermal expansions in these sections may not exert as great a force on the carrier as with a solid auxiliary element.
  • the grooves are produced at an angle to the longitudinal direction of the auxiliary element, in which each knitting tool position crosses at least one groove. This specifies a design rule for the angle at which the groove extends to the longitudinal direction.
  • the grooves are produced at a distance which corresponds at most to the width of the auxiliary element.
  • the remaining between the grooves segments have a length parallel to the longitudinal extent of the auxiliary element, which is indeed greater than the width of the auxiliary element, but much smaller than the total length.
  • the grooves are formed at a distance which is at most half the width of the auxiliary member. This thermal stresses are kept even smaller.
  • grooves for receiving impact tools are produced.
  • the auxiliary member is not significantly weakened. So you can handle it easily and attach to the carrier. If you then produced the grooves into which later the knitting tools, for example, the knitting needles are inserted, then this does not matter, because the mechanical stability of the auxiliary member is ensured by the wearer.
  • the grooves can be as wide or even wider than the grooves, without the storage of the knitting tools is adversely affected.
  • the grooves be made to a depth where they intersect the grooves. This results in segments of the auxiliary element, which are interconnected only by small material bridges, which are formed by webs which remain between individual grooves. These material bridges then interrupt the temperature-induced thermal expansions, so that basically only the thermal expansion of a single segment in the overall consideration is based. If the length of the individual segments is short enough, then such a change in length is hardly measurable.
  • the grooves are produced with a depth corresponding to at least 40% of the thickness of the auxiliary element. This in turn can be exploited to keep the thickness of the strip foot, so the remaining between the bottom of the grooves and the mounting surface material area of the auxiliary element, relatively thick, for example, two to four times larger than the needle thickness.
  • an adhesive which penetrates into the grooves is used to fasten the auxiliary element to the carrier. This increases the adhesive strength and the mechanical stability of the auxiliary element.
  • the grooves are preferably filled with the adhesive at least as far as the grooves. As a result, no burr can form on the edges of the apertures through machining.
  • Fig. 1 shows a needle bar 1 with a carrier 2, which has a plurality of profiles 3, 4, 5, 6. These profiles are connected to each other and surround a cavity 7.
  • the profiles 3-6 are formed from a plastic, in particular a carbon fiber reinforced plastic (CFRP). Each profile 3-6 is open and can be made by pressing.
  • CFRP carbon fiber reinforced plastic
  • the carrier 2 is fastened by means of a screw 7 to a drive lever 8 of a knitting machine.
  • the needle bar 1 carries a plurality of knitting needles 9, of which only one can be seen because the knitting needles 9 are arranged perpendicular to the plane one behind the other.
  • the knitting needles 9 are not attached directly to the carrier 2, but are arranged in an auxiliary element 10 having a plurality of grooves 11 which are separated by webs 12 from each other. Each groove 11 serves to receive a knitting needle 9.
  • the auxiliary element rests with a mounting surface 19 on the carrier 2.
  • a clamping element 13 which is held by a screw 14 on the carrier 2, lies with the interposition of a layer 15 on the knitting needles 9 and holds them together with the auxiliary member 10 on the carrier 2.
  • the carrier 2 is formed of a carbon fiber reinforced plastic. So he has a relatively low thermal expansion coefficient. Length changes due to a change in temperature are therefore relatively small.
  • the auxiliary element 10 is formed from a metal, for example aluminum or magnesium.
  • a metal for example aluminum or magnesium.
  • Such a metal has a much higher coefficient of thermal expansion, so that temperature-induced changes in length are much greater. This can play a significant role, in particular, if the auxiliary element 10, which generally extends over the entire working width filled with knitting needles 9, has a length of several meters. In today's knitting machines lengths of over 6 m are quite possible.
  • the auxiliary element 10 is therefore provided with grooves 16 which extend diagonally across the auxiliary element 10 in the attachment surface 19. Diagonal means that the direction of the grooves 16 neither with the longitudinal direction of the auxiliary element 10 (in Fig. 2 from left to right) still with the width direction of the auxiliary element 10 (in Fig. 2 from bottom to top), but include the grooves 16 with the longitudinal edge of the auxiliary member 10 an acute angle ⁇ .
  • a distance a between adjacent grooves 16 should be at most the width b of the auxiliary element 10 (in Fig. 2 from bottom to top). However, a smaller distance a, in particular a distance a, which corresponds to a maximum of half the width b of the auxiliary element, is preferable.
  • the grooves 16 are also formed as grooves. But they are to distinguish them to the grooves 11 as grooves designated.
  • the grooves 16 have a depth t that is at least 40% of the thickness d of the auxiliary element (in Fig. 4 from bottom to top). Even a greater depth of, for example, 60% of the thickness d of the auxiliary element 10 is preferable.
  • the grooves 11 are inserted so deep into the auxiliary member 10 that they intersect the grooves 16.
  • FIGS. 5 and 6 is the auxiliary element 10 (each in the cutout) shown in a "finished” form, ie it is provided with grooves 16 and grooves 11.
  • the angle ⁇ which include the grooves 16 with the Lekserstrekkung of the auxiliary element 10, should be selected so that each knitting needle 9 is located over at least one groove 16.
  • auxiliary member 10 Characterized in that the auxiliary member 10 is provided only with the grooves 16 on its mounting surface 19 when it is connected to the carrier 2, it has sufficient stability. The bonding of the auxiliary element 10 with the carrier 2 can thus be done with conventional tools and measures.
  • the grooves 11 are then introduced. After that, the segments 17 within the auxiliary element 10, although only connected via the material bridges 18. However, this is not critical because all segments 17 are connected to each other via the carrier 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (17)

  1. Barre pour métier à tricoter (1), comprenant un support (2) en un premier matériau et un élément auxiliaire (10), recevant des outils de tricotage (9), en un second matériau, dans laquelle l'élément auxiliaire (10) est fixé sur le support (2) par une surface de fixation (19), caractérisée en ce que l'élément auxiliaire (10) comporte des rainures (16) qui s'étendent en diagonale dans la surface de fixation (19).
  2. Barre selon la revendication 1, caractérisée en ce que chaque position pour outils de tricotage s'étend sur au moins une rainure (16).
  3. Barre selon la revendication 1 ou 2, caractérisée en ce qu'une distance (a) entre des rainures (16) correspond au maximum à une largeur (b) de l'élément auxiliaire (10).
  4. Barre selon la revendication 3, caractérisée en ce que la distance (a) entre rainures (16) correspond au maximum à la moitié de la largeur (b).
  5. Barre selon l'une des revendications 1 à 4, caractérisée en ce que les outils de tricotage (9) sont agencés dans des gorges (11), dont la profondeur s'étend jusqu'aux rainures (16).
  6. Barre selon l'une des revendications 1 à 5, caractérisée en ce que les rainures (16) présentent une profondeur (t) qui s'élève au moins à 40 % de l'épaisseur (b) de l'élément auxiliaire.
  7. Barre selon l'une des revendications 1 à 6, caractérisée en ce que l'élément auxiliaire (10) et le support (2) sont collés ensemble par une colle (20), et la colle (20) remplit au moins partiellement les rainures (16).
  8. Barre selon la revendication 7, caractérisée en ce que la colle (20) remplit les rainures (16) jusqu'aux gorges (11).
  9. Procédé pour la réalisation d'une barre pour machine à tricoter (1) dans lequel on fixe un élément auxiliaire (10) sur un support (2) avec l'aide d'une surface de fixation (19), caractérisé en ce que, avant la fixation, on produit des rainures (16) qui s'étendent en diagonale dans la surface de fixation (19).
  10. Procédé selon la revendication 9, caractérisé en ce que l'on produit des rainures (16) sous un angle (α) par rapport à la direction longitudinale de l'élément auxiliaire (10), pour lequel chaque position des outils de tricotage croise au moins une rainure (16).
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que l'on produit les rainures (16) avec une distance (a) qui correspond au maximum à la largeur (b) de l'élément auxiliaire (10).
  12. Procédé selon la revendication 11, caractérisé en ce que l'on produit des rainures (16) avec une distance (a) qui correspond au maximum à la moitié de la largeur (b) de l'élément auxiliaire (10).
  13. Procédé selon l'une des revendications 9 à 12, caractérisé en ce que, après la fixation de l'élément auxiliaire (10) sur le support (2), on produit des gorges (11) pour la réception des outils de tricotage (9).
  14. Procédé selon la revendication 13, caractérisé en ce que l'on produit les rainures (11) jusqu'à une profondeur à laquelle elles recoupent les rainures (16).
  15. Procédé selon l'une des revendications 9 à 14, caractérisé en ce que l'on produit les rainures (16) avec une profondeur (t) qui correspond au moins à 40 % de l'épaisseur (d) de l'élément auxiliaire (10).
  16. Procédé selon l'une des revendications 9 à 15, caractérisé en ce que, pour fixer l'élément auxiliaire (10) sur le support (2), on utilise une colle (20) qui pénètre dans les rainures (16).
  17. Procédé selon la revendication 16, caractérisé en ce que l'on remplit avec la colle (20) les rainures (16) au moins jusqu'aux gorges (11).
EP20050021114 2005-09-28 2005-09-28 Barre pour un métier à mailles jetées et procédé de production Not-in-force EP1770193B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20050021114 EP1770193B1 (fr) 2005-09-28 2005-09-28 Barre pour un métier à mailles jetées et procédé de production
DE200550010842 DE502005010842D1 (de) 2005-09-28 2005-09-28 Wirkmaschinen-Barre und Verfahren zum Herstellen einer Wirkmaschinen-Barre
CN2006101595819A CN1940160B (zh) 2005-09-28 2006-09-28 针织机梳栉和制造针织机梳栉的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050021114 EP1770193B1 (fr) 2005-09-28 2005-09-28 Barre pour un métier à mailles jetées et procédé de production

Publications (2)

Publication Number Publication Date
EP1770193A1 EP1770193A1 (fr) 2007-04-04
EP1770193B1 true EP1770193B1 (fr) 2011-01-12

Family

ID=36218254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050021114 Not-in-force EP1770193B1 (fr) 2005-09-28 2005-09-28 Barre pour un métier à mailles jetées et procédé de production

Country Status (3)

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EP (1) EP1770193B1 (fr)
CN (1) CN1940160B (fr)
DE (1) DE502005010842D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007038589B4 (de) * 2007-08-16 2014-02-20 Karl Mayer Textilmaschinenfabrik Gmbh Barre für eine Kettenwirkmaschine
DE102010044673B4 (de) * 2010-09-08 2014-01-09 Karl Mayer Textilmaschinenfabrik Gmbh Wirkwerkzeugbarren-Reparaturset und Wirkwerkzeugbarre
DE102012007109B4 (de) * 2012-03-07 2014-08-28 Karl Mayer Textilmaschinenfabrik Gmbh Wirkwerkzeugbarre und Verfahren zum Herstellen einer Wirkwerkzeugbarre
CN103266411A (zh) * 2013-05-28 2013-08-28 马骏 一种嵌入型可拆卸活动主针针夹及针块
EP2942429B1 (fr) * 2014-05-07 2016-12-07 Karl Mayer Textilmaschinenfabrik GmbH AIGUILLES à TRICOTER ET BARRE D'AIGUILLES
CN110344172B (zh) * 2019-08-06 2023-09-08 宁波丽成复合材料制品有限公司 一种高速精编机纺针碳纤维底座
CN111118726B (zh) * 2020-03-01 2021-06-25 滨州市闽轩塑料制品有限公司 一种纺织经编机用空心针床

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1760139B1 (de) * 1968-04-09 1970-07-16 Liebrandt Karl Halterung von Wirkwerkzeugen
DE7837197U1 (de) * 1978-12-15 1979-03-22 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Abschlag-profilschiene fuer eine kettenwirkmaschine
US4483261A (en) * 1983-02-07 1984-11-20 Tuftco Corporation Segmental needle bar for multiple needle tufting machine
DE8816672U1 (de) * 1988-12-01 1990-04-19 Karl Mayer Textilmaschinenfabrik GmbH, 6053 Obertshausen Kettenwirkmaschine mit mindestens einer Barre
DE4111108C2 (de) * 1991-04-05 1993-10-07 Erbsloeh Julius & August Als geschlossenes Hohlprofil aus verstärktem Kunststoff ausgebildeter Träger
DE4302858C1 (de) * 1993-02-02 1994-06-01 Mayer Textilmaschf Verfahren zum Herstellen einer Nadelbarre
DE10348557B3 (de) * 2003-10-20 2005-06-30 Liba Maschinenfabrik Gmbh Barre einer Wirkmaschine, insbesondere Kettenwirkmaschine

Also Published As

Publication number Publication date
CN1940160A (zh) 2007-04-04
CN1940160B (zh) 2010-11-03
EP1770193A1 (fr) 2007-04-04
DE502005010842D1 (de) 2011-02-24

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