EP4159905A1 - Métier à mailles jetées - Google Patents

Métier à mailles jetées Download PDF

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Publication number
EP4159905A1
EP4159905A1 EP21200087.1A EP21200087A EP4159905A1 EP 4159905 A1 EP4159905 A1 EP 4159905A1 EP 21200087 A EP21200087 A EP 21200087A EP 4159905 A1 EP4159905 A1 EP 4159905A1
Authority
EP
European Patent Office
Prior art keywords
guide
bar
knitting machine
weft thread
warp 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.)
Granted
Application number
EP21200087.1A
Other languages
German (de)
English (en)
Other versions
EP4159905B1 (fr
Inventor
Markus Ott
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 Stoll R&D GmbH
Original Assignee
Karl Mayer Stoll R&D 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 Stoll R&D GmbH filed Critical Karl Mayer Stoll R&D GmbH
Priority to EP21200087.1A priority Critical patent/EP4159905B1/fr
Priority to CN202210224099.8A priority patent/CN115897044A/zh
Publication of EP4159905A1 publication Critical patent/EP4159905A1/fr
Application granted granted Critical
Publication of EP4159905B1 publication Critical patent/EP4159905B1/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
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/22—Flat warp knitting machines with special thread-guiding means
    • 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
    • D04B27/04—Sinkers
    • 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
    • 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
    • D10B2505/10—Packaging, e.g. bags

Definitions

  • the present invention relates to a warp knitting machine with a knitting needle bar that carries knitting needles, a guide bar arrangement that can be moved in an offset direction, that has a weft thread guide bar that lays a protective thread, and a fabric take-off.
  • Such a warp knitting machine is, for example, from DE 298 25 132 U1 known.
  • Such a warp knitting machine is used in particular for the production of nets, for example hay bale nets, shade nets or anti-hail nets.
  • the guide bar arrangement produces rows of stitches arranged at a distance from one another, usually in the form of a fringe, which are connected by the weft threads that are laid through the weft thread guide bar. Since the goods formed in this way are drawn off continuously, the weft threads do not run completely perpendicular to the fringe threads, but somewhat diagonally. As a result, the width of the fabric decreases when it is subjected to longitudinal tension.
  • the object of the invention is to be flexible in the production of nets.
  • the guide sinker extends a portion of the weft thread between two fringe threads when the guide bar assembly creates a fringe lay, or two threads involved in the stitch formation when the guide bar assembly creates another lay, such as a tricot lay. Since the guide sinker protrudes through the space between two knitting needles, it protrudes beyond the knitting needles, so that the weft thread is forced to travel a distance that is greater than the distance between two knitting needles. This length reserve allows the knitted net to be widened later when it is stretched out. However, the guide sinker is arranged independently of the knitting needles, so that it does not interfere with the movement of the knitting needles and does not contribute to an increase in the mass of the knitting needle bar. Usually more than one guide board will be used.
  • At least one guide sinker is arranged in all spaces between knitting needles, so that the weft thread can be lengthened between all fringe threads.
  • the guide sinker is preferably arranged on a guide sinker bar. When using several guide boards then all guide boards are handled uniformly.
  • the guide sinker bar can be independent of other bars in the warp knitting machine be arranged. It does not have to be moved in a stitch-forming operation, so that the construction of the warp knitting machine can be kept simple.
  • the guide boards are arranged on the guide board bar according to the pitch. The distance between the guide sinkers in the offset direction is therefore adapted to the distribution of the knitting needles.
  • the guide sinker bar is preferably adjustable transversely to the offset direction. Such an adjustment allows the length of the guide sinker that protrudes between the knitting needles to be shortened or lengthened. The length of the weft threads between the individual fringe threads can thus be easily varied.
  • the adjustment can be made when setting up the warp knitting machine. However, it can also take place during the manufacture of a knitted fabric. This makes it possible to produce sections with weft threads of different lengths in a knitted fabric. The adjustment can take place, for example, via a central adjustment.
  • the guide sinker bar is preferably connected to an adjustment drive.
  • the adjustment drive allows adjustment of the position of the sinker bar without requiring operator intervention.
  • the operation of the warp knitting machine can be automated within certain limits.
  • Each knitting needle is preferably assigned two guide sinkers, with the two guide sinkers being arranged on both sides of the knitting needle.
  • a particularly large lengthening of the weft thread can be achieved in this way.
  • the weft thread When it is guided from one knitting needle to an adjacent knitting needle, the weft thread must run over two guide sinkers, which in turn protrude over the knitting needles. This results Put simply, a rectangular guide of the weft thread that forms a larger reserve.
  • At least one intermediate space between knitting needles is preferably free of guide sinkers.
  • One or more guide sinkers can then be arranged in such a way that guide sinkers are always located only in every second or third space between knitting needles.
  • Each guide plate preferably has a first section, which extends in a first direction transversely to the direction of displacement, and a second section, which extends in a direction in which the goods are pulled off.
  • the first section thus defines the distance of the second section from the knitting needles and thus the additional length that the weft thread has.
  • the first section and the second section are preferably connected to one another by an arc section.
  • the weft thread can easily slide in the direction of the fabric take-off on the curved section.
  • the second section is longer than the first section.
  • the weft thread can thus be held on the second section for a relatively long time.
  • the guide sinker preferably has a length at which the weft thread rests on the guide sinker at least up to the second knockdown.
  • the weft thread is held on the guide plate until it ends in a fringe thread is involved.
  • the length of the guide board can mainly be defined via the second section. It depends, among other things, on the speed of the fabric take-off and on the movement of the weft thread bar.
  • Schematically illustrated warp knitting machine 1 has a knitting needle bar 2, which carries knitting needles 3, which can also be referred to as "working needles". Furthermore, a guide bar arrangement 4 is provided, which has a weft thread guide bar 5 and one or more other guide bars 6 .
  • the weft thread guide bar 5 is provided with thread guides 7, which lead a weft thread in the production of a knitted fabric.
  • the remaining guide bars 6 are provided with thread guides 8 which together with the knitting needles 3 form a fringe.
  • the thread guides 7 of the weft thread guide bar 5 then guide a weft thread back and forth between the individual fringe threads. Laying types other than "fringe" are also possible, as long as there is a thread-like education results.
  • the term “fringe” is chosen herein for the sake of simplicity.
  • the warp knitting machine 1 also has a routing plate bar 9 with a routing plate 10 . how to get in 2 can see, the rilling plate 10 has rilling plate teeth 11 .
  • the knitting needles 3 are arranged, for example, with a pitch of E1, i.e. one knitting needle 3 is arranged per inch width (2.54 mm width).
  • the division of the thread guides 7, 8 is corresponding.
  • Guide sinkers 12 , 13 are arranged on both sides of each knitting needle 3 and are arranged on a guide sinker bar 14 .
  • the guide board bar 14 can be adjusted in the direction of a double arrow 15 .
  • An adjustment drive not shown in detail, can be provided for this adjustment, so that the position of the guide sinker bar 14 can also be adjusted without the intervention of an operator.
  • the guide sinker bar 14 does not have to be moved for stitch formation. However, an adjustment during operation of the warp knitting machine is possible.
  • Two guide sinkers 12 , 13 are associated with each knitting needle 3 , the two guide sinkers 12 , 13 being arranged on either side of the knitting needle 3 . They are relatively close to the associated knitting needle 3 arranged and can thus fulfill the function of a comb, ie they can prevent the rise of the stitch on the shaft of the knitting needle 3 when the knitting needle 3 rises.
  • the guide plates 12, 13 are each arranged at positions where a milling plate tooth 11 is located.
  • the guide sinkers 12, 13 preferably have the same width as the milling plate teeth 11, ie the same extension in the offset direction. Accordingly, in 2 the milling plate teeth 11 covered by the guide boards 12, 13 are shown in dashed lines.
  • the routing plate 10 with its routing plate teeth 11 is arranged between the guide sinkers 12, 13 and the knitting needle bar 2.
  • the guide board 13 (the same applies to the guide board 12) has a first section 16 which extends transversely to the offset direction in a first direction. Furthermore, the guide board 13 has a second section 17 which extends in the direction of a goods take-off 18 onto which the goods produced are wound. The first section 16 and the second section 17 are connected to one another by an arc section 19 . In 1 it is shown that the second section 17 runs at right angles to the first section 16 . This is not absolutely mandatory. Other angles are possible.
  • FIG. 2 shows a warp knitting machine with a single stitch-forming guide bar 6.
  • this Warp knitting machine generate the thread guide 8 together with the knitting needles 3 fringes or fringed threads.
  • a connection between adjacent fringe threads then takes place through the weft thread, which is guided through the weft thread guide 7 on the weft thread guide bar 5 .
  • the weft thread guides 7 guide the weft thread from one knitting needle 3 to the adjacent knitting needle 3 and back to the first knitting needle 3.
  • the weft thread is tied into a fringe thread in each case.
  • weft thread guide 7 pulls the weft thread from the in 2 knitting needle 3 shown on the right to the in 2 knitting needle 3 shown on the left leads, then the weft thread is first guided over the guide sinker 12, then between the guide sinker 12 and the guide sinker 13 and finally via the guide sinker 13 to the left knitting needle 3. During this movement of the weft thread, the knitted fabric is pulled through the fabric take-off 18 withdrawn and thus transported further.
  • the second sections 17 of the guide sinkers 12, 13 are designed so long that the weft thread can lie on the guide sinkers 12, 13 until it is tied into the fringe threads at both ends.
  • the length of the first section 16 can be used to define the excess of the weft thread, ie the length of the weft thread that is formed in addition to the distance between two fringe threads.
  • the guide sinker bar 14 can be adjusted transversely to the offset direction, the extent to which the first section 16 of the guide sinkers 12, 13 projects beyond the knitting needles 3 can be adjusted. This also allows the length of the surplus of the weft thread to be adjusted.
  • the guide plate bar 14 can be adjusted, for example, via a central adjustment. The adjustment can also be made during production Knitted fabric take place, so that the knitted fabric then has areas with weft threads of different lengths in the longitudinal or withdrawal direction.
  • the offset direction is the direction in which the guide bars 5, 6 of the guide bar arrangement 4 are moved for stitch formation.
  • the offset direction corresponds to the longitudinal extension of the guide bar arrangement, based on the 1 i.e. perpendicular to the plane of the drawing.
  • Figures 3 and 4 show a modified embodiment of a warp knitting machine 1 in the same representation as that Figures 1 and 2 . Same elements as in the Figures 1 and 2 are provided with the same reference numbers.
  • the two or more guide bars 6, 6 'can also be used in a warp knitting machine whose effective range in 2 corresponds to the effective range shown.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP21200087.1A 2021-09-30 2021-09-30 Métier à mailles jetées Active EP4159905B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21200087.1A EP4159905B1 (fr) 2021-09-30 2021-09-30 Métier à mailles jetées
CN202210224099.8A CN115897044A (zh) 2021-09-30 2022-03-09 经编机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21200087.1A EP4159905B1 (fr) 2021-09-30 2021-09-30 Métier à mailles jetées

Publications (2)

Publication Number Publication Date
EP4159905A1 true EP4159905A1 (fr) 2023-04-05
EP4159905B1 EP4159905B1 (fr) 2024-06-12

Family

ID=78087024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21200087.1A Active EP4159905B1 (fr) 2021-09-30 2021-09-30 Métier à mailles jetées

Country Status (2)

Country Link
EP (1) EP4159905B1 (fr)
CN (1) CN115897044A (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5660062A (en) * 1993-01-19 1997-08-26 Textilma Ag Process and installation for producing textile net-like fabrics
DE29825132U1 (de) 1997-11-25 2005-03-24 Tama Plastic Industry Israel Gewirktes Netz mit modifiziertem Schuss
EP2683863B1 (fr) * 2011-03-10 2015-03-11 Karatzis S.A. Dispositif d'allongement de coutures, dispositif d'allongement pour produire un filet avec des coutures allongées, procédé de fabrication d'un filet avec des coutures allongées et filet avec des coutures allongées
WO2018034221A1 (fr) * 2016-08-18 2018-02-22 松山毛織株式会社 Filet d'emballage et procédé de production dudit filet d'emballage
EP3831995A1 (fr) * 2018-07-30 2021-06-09 Okamoto Lace Co., Ltd. Procédé de production de filet d'emballage enroulé, appareil de production de filet d'emballage roulé, et filet d'emballage enroulé

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5660062A (en) * 1993-01-19 1997-08-26 Textilma Ag Process and installation for producing textile net-like fabrics
DE29825132U1 (de) 1997-11-25 2005-03-24 Tama Plastic Industry Israel Gewirktes Netz mit modifiziertem Schuss
EP2683863B1 (fr) * 2011-03-10 2015-03-11 Karatzis S.A. Dispositif d'allongement de coutures, dispositif d'allongement pour produire un filet avec des coutures allongées, procédé de fabrication d'un filet avec des coutures allongées et filet avec des coutures allongées
WO2018034221A1 (fr) * 2016-08-18 2018-02-22 松山毛織株式会社 Filet d'emballage et procédé de production dudit filet d'emballage
EP3831995A1 (fr) * 2018-07-30 2021-06-09 Okamoto Lace Co., Ltd. Procédé de production de filet d'emballage enroulé, appareil de production de filet d'emballage roulé, et filet d'emballage enroulé

Also Published As

Publication number Publication date
CN115897044A (zh) 2023-04-04
EP4159905B1 (fr) 2024-06-12

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