EP2261409B1 - Métier à tricoter chaîne rectiligne - Google Patents

Métier à tricoter chaîne rectiligne Download PDF

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Publication number
EP2261409B1
EP2261409B1 EP09007649A EP09007649A EP2261409B1 EP 2261409 B1 EP2261409 B1 EP 2261409B1 EP 09007649 A EP09007649 A EP 09007649A EP 09007649 A EP09007649 A EP 09007649A EP 2261409 B1 EP2261409 B1 EP 2261409B1
Authority
EP
European Patent Office
Prior art keywords
plunger
knitting machine
bending joint
tappet
support lever
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.)
Active
Application number
EP09007649A
Other languages
German (de)
English (en)
Other versions
EP2261409A1 (fr
Inventor
Oliver Dr. Franke
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 ES09007649T priority Critical patent/ES2370964T3/es
Priority to EP09007649A priority patent/EP2261409B1/fr
Priority to AT09007649T priority patent/ATE526442T1/de
Priority to CN200910173249.1A priority patent/CN101922086B/zh
Publication of EP2261409A1 publication Critical patent/EP2261409A1/fr
Application granted granted Critical
Publication of EP2261409B1 publication Critical patent/EP2261409B1/fr
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
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • D04B27/08—Driving devices therefor
    • 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
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D04B27/26—Shogging devices therefor

Definitions

  • the invention relates to a knitting machine having at least one working tool bar arranged on support levers, wherein at least one support lever is connected to a plunger which has at least one bending joint.
  • Such a knitting machine is off US Pat. No. 2,167,408 known.
  • the plunger is formed as a rod which is connected at its two ends with struts which are formed as leaf springs.
  • pivoting movements of ingots are required on which knitting tools are attached. These pivotal movements are generated for example by coupling gears in the machine frame and transmitted via ram to support lever, which in turn transmit the movement of the knives bar.
  • the plungers are loaded in tension and compression direction and must therefore be hingedly connected to the levers.
  • Another knitting machine is off DE 41 34 826 C1 known.
  • To the articulated connection between the plunger and the lever produce commercially available needle roller bearings are used in a joint eye.
  • rolling bearings are designed for a rotational movement, regardless of whether they are designed as a needle bearing or otherwise. In a knitting machine, however, there is no complete rotation in the articulated connection between the plunger and the lever. Rather, a rotational movement results in changing directions only over a relatively small angular range of, for example, about 10 °.
  • the bearings are subject to a very high alternating load. Accelerations over 1000 m / s 2 are possible. So that these bearings are not destroyed in such a field of application, they must be designed without play. This happens, for example, in that the outer ring of the joint bearing is pressed into the joint eye, so that in the idle state, a bias is present.
  • the roundness of the inner circumference of the outer ring is not affected, this must have a relatively large wall thickness. This leads to a relatively large mass of the bearing.
  • the invention has for its object to achieve a high operating speed in a knitting machine.
  • This object is achieved in a knitting machine of the type mentioned above in that the bending joint is formed of a fiber-reinforced plastic.
  • Such a bending joint can be formed with a comparatively small mass. Since the relative rotation of the support lever and plunger is relatively small, a flexure can be designed so that it withstands the upcoming loads even over a variety of work cycles. Due to the relatively small relative rotation between the lever and plunger can be transmitted with a bending joint, the necessary traction and the necessary compressive force.
  • a fiber-reinforced plastic can be bent within certain limits over a large number of games without causing material fatigue or breakage. In addition, one can choose a fiber reinforced plastic with a relatively low mass compared to a metal.
  • the bending joint is formed integrally with the plunger. So you need no additional connection between the bending joint and the plunger. Rather, the bending joint is formed by the fact that the plunger in a portion of its length training has, in which the plunger can be bent. This keeps the mass small.
  • the bending joint is arranged in the region of one end of the plunger.
  • the plunger can therefore be formed as stiff over the greater part of its length, as before. Only in one end section does it then have to be deformable in the region of the bending joint. In this way, the required tensile and compressive forces can be easily transferred.
  • the plunger is connected via a torque-resistant connection with the support lever.
  • a relative movement between the plunger and the support lever can therefore only take place in the region of the bending joint.
  • the connection between the support lever and the plunger can be made very stable.
  • the plunger is fixed by clamping on the support lever.
  • a clamping attachment keeps loads on the plunger small. In many cases, it may not even be necessary to pierce the ram or otherwise create an aperture.
  • the plunger and the support lever in the longitudinal direction of the plunger in different positions relative to each other can be fixed.
  • an adjustment of the plunger relative to the lever is possible.
  • the plunger and / or the support lever is a positioning aid having.
  • a positioning auxiliary device can be formed for example by a screw, with which the plunger can be pulled or pressed in a certain position relative to the support lever.
  • a knitting machine designed as a warp knitting machine 1 has a machine bed 2, from which rams 3, 4, 5 and 6 emerge, which are moved back and forth by a coupling mechanism arranged in the machine bed 2, as indicated by an arrow 7.
  • the plunger 3 drives a support lever 9, which pivots about a fixed axis 10 and two guide bars 11, 12 pivots back and forth in the working area 13 of the warp knitting machine.
  • the plunger 4 drives a support lever 14 for a piercing comb, the plunger 5 a support lever 15th for the knitting needles and the plunger 6 a support lever 16 for the slide of the knitting needles.
  • Fig. 2 shows the support lever 16 which drives the knitting needle bar 17 with the knitting needles 18.
  • the support lever 16 is pivotable about a fixed axis 19. Since the stroke which the knitting needles 18 have to perform during stitch formation is relatively small, the pivoting angle of the support lever 16 is also relatively small. It is on the order of about 10 °.
  • the movement of the knitting needles 18 is controlled by a cam 20 on which the plunger 6 rests with a roller 21.
  • a possibly existing return spring is not shown for reasons of clarity.
  • the plunger 6 is formed of a fiber-reinforced plastic. He has at its end adjacent to the support lever 16 a bending joint 22. This bending joint 22 is formed integrally with the plunger 6.
  • the bending joint 22 is formed in the simplest case, characterized in that the plunger 6 is flattened at the adjacent end of the support lever 16 and thus has a reduced thickness.
  • the thickness ratio between the bending joint 22 and the plunger may be in the range from 4 to 10, in particular from 5 to 7.
  • the plunger 6 may have in the region of the bending joint 22 a broadening (perpendicular to the plane).
  • the plunger 6 can also be constructed hybrid.
  • the flexure 22 may be formed by a glass fiber reinforced plastic while the rest of the plunger 6 is formed by reinforced with carbon fibers plastic. You can also first customize the bending joint 22 and then assemble with the plunger 6, for example, pour together.
  • the plunger 6 has two bending joints.
  • the bending joint 22 (or the bending joints 22) is advantageously arranged in the region of one end of the plunger 6.
  • the plunger 6 is connected via a torque-resistant connection 23 to the support lever 16.
  • the plunger 22 is clamped with a screw 24 on the support lever 16. The plunger 6 is thus secured by clamping on the support lever 16.
  • the screw 24 may be guided by an elongated recess of the plunger 6, so that the plunger 6 relative to the support lever 16 is adjustable within certain limits and can be mounted in different positions.
  • Fig. 3 shows a modified embodiment of a plunger, wherein the same elements with the same reference numerals as in FIGS. 1 and 2 are provided.
  • the screw 24 acts via a disc 25 by clamping on a region 26 of the plunger 6, which is located on the support lever 16 adjacent side of the bending joint 22.
  • This region 26 forms, so to speak, a continuation of the bending joint 22, ie it has the same thickness (in the longitudinal direction of the support lever 16) as the bending joint 22 also. In some cases, however, it can be favorable to form the bending joint 22 with a smaller thickness than the region 26.
  • the screw 24 may be arranged so that it is guided through a bore or opening in the bending joint 22. But you can also arrange two screws 24 laterally adjacent to the bending joint 22 and then tension the bending joint 22 with a pressure plate against the support lever 16 without piercing the bending joint 22.
  • the bending joint 22 is in the embodiment according to Fig. 3 slightly longer (in the longitudinal direction of the plunger 16) than in the training to Fig. 2 ,
  • the exact dimensioning of the bending joint 22 depends on the expected load and the installation situation of the plunger 6.
  • the bending joint 22 must on the one hand allow the deformations that are necessary to pivot the support lever 16. On the other hand, it must be stiff enough in the longitudinal direction of the plunger 6 to transmit the required compressive and tensile forces on the support lever. When using fiber reinforced plastic, however, this is possible without problems.
  • Fig. 4 shows a further embodiment of the plunger 6, in the same and functionally identical elements as in the FIGS. 1 to 3 are provided with the same reference numerals.
  • the range 26 of the plunger 6 is provided with an extension 28 which is angled approximately at right angles to the region 26.
  • a screw 29 is screwed, which on the top of the support lever 16 works. With the help of the adjusting screw 29, the plunger 6 can be moved relative to the support lever 16 very accurately in a predetermined position. When this position is reached, then the screw 24 can be tightened to clamp the plunger 6 on the support lever 16.
  • the reinforcing fibers are preferably directed parallel to the longitudinal direction of the plunger 6. In the other regions of the plunger 6, the reinforcing fibers can also take an angle with the longitudinal direction.
  • Glass fiber reinforced plastic (GRP) is excellently suited for continuous bending stress.
  • the fiber volume fraction may be about the same in the region of the bending joint 22 as in the remainder of the tappet 6.

Landscapes

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

Claims (7)

  1. Métier à tricoter (1) comprenant au moins une barre pour éléments de tricotage (11, 12, 17) disposée sur des leviers de support (9, 14, 15, 16), au moins un levier de support (9, 14, 15, 16) étant connecté à un poussoir (3, 4, 5, 6) qui présente au moins une articulation à flexion (22), caractérisé en ce que l'articulation à flexion (22) est formée en un matériau plastique renforcé par des fibres.
  2. Métier à tricoter selon la revendication 1, caractérisé en ce que l'articulation à flexion (22) est réalisée d'une seule pièce avec le poussoir (6).
  3. Métier à tricoter selon la revendication 1 ou 2, caractérisé en ce que l'articulation à flexion (22) est disposée dans la région d'une extrémité du poussoir (6).
  4. Métier à tricoter selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le poussoir (6) est connecté par le biais d'une connexion à couple fixe (23) au levier de support (16).
  5. Métier à tricoter selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le poussoir (6) est fixé par serrage sur le levier de support (16).
  6. Métier à tricoter selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le poussoir (6) et le levier de support (16) peuvent être fixés dans la direction longitudinale du poussoir dans des positions différentes l'un par rapport à l'autre.
  7. Métier à tricoter selon la revendication 6, caractérisé en ce que le poussoir (6) et/ou le levier de support (16) présentent un dispositif d'assistance au positionnement (27).
EP09007649A 2009-06-10 2009-06-10 Métier à tricoter chaîne rectiligne Active EP2261409B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES09007649T ES2370964T3 (es) 2009-06-10 2009-06-10 Máquina de tricotar.
EP09007649A EP2261409B1 (fr) 2009-06-10 2009-06-10 Métier à tricoter chaîne rectiligne
AT09007649T ATE526442T1 (de) 2009-06-10 2009-06-10 Wirkmaschine
CN200910173249.1A CN101922086B (zh) 2009-06-10 2009-09-09 针织机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09007649A EP2261409B1 (fr) 2009-06-10 2009-06-10 Métier à tricoter chaîne rectiligne

Publications (2)

Publication Number Publication Date
EP2261409A1 EP2261409A1 (fr) 2010-12-15
EP2261409B1 true EP2261409B1 (fr) 2011-09-28

Family

ID=42126098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09007649A Active EP2261409B1 (fr) 2009-06-10 2009-06-10 Métier à tricoter chaîne rectiligne

Country Status (4)

Country Link
EP (1) EP2261409B1 (fr)
CN (1) CN101922086B (fr)
AT (1) ATE526442T1 (fr)
ES (1) ES2370964T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010034268A1 (de) * 2010-08-13 2012-02-16 Karl Mayer Textilmaschinenfabrik Gmbh Wirkmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB511045A (en) 1938-02-11 1939-08-11 James Morton Improvements in knitting machinery
GB1078178A (en) * 1964-10-28 1967-08-02 Mayer Textilmaschf An arrangement for shogging the guide bars of warp knitting machines
DE8816672U1 (de) * 1988-12-01 1990-04-19 Karl Mayer Textilmaschinenfabrik GmbH, 6053 Obertshausen Kettenwirkmaschine mit mindestens einer Barre
DE4134826C1 (en) 1991-10-22 1992-11-26 Karl Mayer Textilmaschinenfabrik Gmbh, 6053 Obertshausen, De Shackle toggle for driving knitting tools - consisting of housing having transverse bore for receiving roller bearing to prolong bearing service life
DE19902706C1 (de) 1999-01-25 2000-11-16 Mayer Textilmaschf Gelenklager zwischen zwei Bauelementen, vorzugsweise für Wirkmaschinen
DE102004023802B3 (de) * 2004-05-13 2005-12-22 Liba-Maschinenfabrik Gmbh Kettenwirkmaschine mit Bauelementen aus Kunststoffmaterial

Also Published As

Publication number Publication date
EP2261409A1 (fr) 2010-12-15
CN101922086B (zh) 2013-12-25
ATE526442T1 (de) 2011-10-15
CN101922086A (zh) 2010-12-22
ES2370964T3 (es) 2011-12-26

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