EP0066525A2 - Verfahren und Vorrichtung zum gleichzeitigen Schneiden an mehreren Stellen eines Schussfadens einer Matte oder einer Strickware an einer Strickmaschine - Google Patents

Verfahren und Vorrichtung zum gleichzeitigen Schneiden an mehreren Stellen eines Schussfadens einer Matte oder einer Strickware an einer Strickmaschine Download PDF

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Publication number
EP0066525A2
EP0066525A2 EP82420116A EP82420116A EP0066525A2 EP 0066525 A2 EP0066525 A2 EP 0066525A2 EP 82420116 A EP82420116 A EP 82420116A EP 82420116 A EP82420116 A EP 82420116A EP 0066525 A2 EP0066525 A2 EP 0066525A2
Authority
EP
European Patent Office
Prior art keywords
weft
weft thread
thread
needles
cutting
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
EP82420116A
Other languages
English (en)
French (fr)
Other versions
EP0066525B1 (de
EP0066525A3 (en
Inventor
Albert R. Hiler
William H. Haverland
Julien Porta
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.)
Gambro Hospal Schweiz AG
Original Assignee
Hospal AG
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 Hospal AG filed Critical Hospal AG
Priority to DE8282420116T priority Critical patent/DE3269180D1/de
Priority to EP19820420116 priority patent/EP0066525B1/de
Publication of EP0066525A2 publication Critical patent/EP0066525A2/de
Publication of EP0066525A3 publication Critical patent/EP0066525A3/fr
Application granted granted Critical
Publication of EP0066525B1 publication Critical patent/EP0066525B1/de
Expired legal-status Critical Current

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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
    • D04B35/34—Devices for cutting knitted fabrics

Definitions

  • the present invention relates to a method and a device for simultaneously cutting, in several places, the same weft thread of a mat or knitted fabric, on a knitting machine.
  • the method and the device according to the present invention thus make it possible to obtain continuously and simultaneously, on the knitting machine, at least two distinct strips of knits or mats which can be collected each continuously, for example by winding around spools .
  • the present invention relates to a method and a device for simultaneously cutting and in several places the weft yarn of a mat or knitted fabric on a weft insertion knitting machine.
  • the cutting, in several places, of the same weft thread of a mat or knitted fabric is a delicate operation which must imperatively be carried out simultaneously at all the places chosen for cutting. Indeed the weft thread of the knitting or mat must be under tension at the time of cutting and if the latter does not take place at the same time in all the places chosen and desired for this cutting, from the moment when there has been cutting in one place it is practically impossible to have a correct cutting in the other chosen places because the weft thread is no longer taut.
  • An object of the present invention is therefore a method and a device making it possible to cut simultaneously, in several places, the same weft thread of a mat or knitted fabric on a knitting machine.
  • Another object of the present invention is a method and a device making it possible to cut the weft thread of a mat or knit in several places on a knitting machine, while being sure of obtaining equal lengths for each segment of thread sectioned frame.
  • Another object of the present invention is a method and a device specially well suited for cutting the weft thread of a mat or knitted fabric, when this weft thread is in the form of hollow fiber, for example in the form of hollow fiber usable in the field of artificial kidneys.
  • this hollow fiber can for example be made of cellulosic material.
  • Another object of the present invention is a process and a device specially well suited for cutting in several places the weft thread, in the form of hollow fiber, a mat or knitted fabric, while the threads used for making the stitches around the weft thread is in the form of non-hollow thread with a diameter less than the outside diameter of the hollow fibers, for example twisted multi-strand thread.
  • a device for simultaneously cutting, in several places, the weft thread of a mat or knitted fabric, on a knitting machine said device being characterized by comprising at least three cutting elements which make it possible to cut said weft thread just after the stitch of each warp thread has been tightened around said weft thread and while a stitch is being formed on the thread next frame, where you want it.
  • An object of the present invention is also a method for cutting simultaneously and in several places the same weft yarn of a mat or knitted fabric on a knitting machine, characterized in that said weft yarn is cut into at least three places immediately after each stitch of each warp thread has been tightened around the weft thread and considering that a stitch is being formed, at the desired locations, on the next weft thread.
  • the weft threads (11) advance towards the mesh formation zone by means of endless belts holding the threads by hooks, a belt being at each end of the weft threads.
  • the weft threads (11) are for example hollow fibers, but we will still call them weft threads (11) for easier description.
  • These son (11) advance in Figure 1, from right to left, driven by the belts not shown and they are substantially perpendicular to the plane of the drawing.
  • a knitting machine such as that having the elements described above is particularly well suited for the manufacture of knitted fabric or mat for use in making bundles of hollow flora. Indeed with such a knitting machine, using as weft yarns (11) hollow fibers, for example in regenerated cellulose of CUPROPHAN brand (internal diameter 0.2 mm, wall thickness: 0.01 mm) and yarns ( 12) 70 denier chain (9,000 meters weigh 70 g) in polyester, it is convenient to obtain a knit or mat which can be used for the production of bundles of hollow fibers usable in artificial kidneys.
  • mat or knit generally means any product comprising weft threads (11) (which may be in the form of hollow fibers) parallel to each other and warp threads (12) substantially perpendicular to the weft threads (11), said warp threads (12) forming meshes around the weft threads (11).
  • the different elements (1 to 10) participating in the formation of the stitches around the wefts (11) all have a particular known movement which will be specified below at the same time as the action of the cutting elements (13) included will be described.
  • the weft thread inserting plates (10), the picking plates (8) and the needles (4) are all spaced from one another and during their respective movements do not come into contact with each other . Only the slides (6), also called tabs by specialists, are in contact with the needles. As for the cutting elements (13) they are also spaced from the other elements above.
  • the cutting elements (13) are fixed to the needle bar (3) (4), for example at places where needles (4) have been removed, the slides (6) having also been removed at these locations. Therefore the elements cutting edges (13), which are for example knives, pass between the picking plates (8) and the insertion plates (10).
  • Figure 2 shows in perspective how the knives (13) pass between the plates (8) for picking, as well as the needles (4) with hooks (15).
  • FIGs 3 to 5 show the mode of action of the cutting elements (13) of the device according to the present invention during the formation of meshes around a weft thread (11), it being understood that the needles (4) and the knives (13) are in different planes (see Figure 2).
  • Figure 3 corresponds to the position reached when a weft thread (11) having a formed mesh (at each desired location over its entire length) has just passed from the back (17) of the plates (8) for picking, in the groove (14) of these.
  • Each picking plate (8) is in its extreme position towards the right and will start its movement towards the left, that is to say towards the front.
  • Each insertion plate (10) has reached its highest and most advanced position, that is to say the leftmost of the figure.
  • the weft thread (11) around which a new mesh will be formed (at the desired locations) is thus enclosed between the threads (12) passing through the passettes (2) and the insertion plates (10).
  • the needles (4) have reached their lowest position and their hooks (15) or heads are closed by the slides (6).
  • Each needle (5) comprises a loop of warp thread (12).
  • the cutting elements (13) are in their lowest position, like the needles (4).
  • the passettes (2) execute the piers-sous and will start their movement backwards, that is to say the
  • Figure 4 corresponds to a position when the needles (4) advance to their highest position.
  • Each picking plate (8) has reached its most advanced position, towards the left, and the meshes previously felled in the groove (14) of each plate (8) are stretched to take their final shape.
  • the insertion plates (10) are in the advanced position and the weft thread (11) around which each mesh is being formed is well enclosed between each insertion plate (10) and the warp threads (12).
  • the slides (6) are in the lower position and therefore the needles (4) have their hooks (15) open: the needles (4) are said open.
  • the cutting elements (13) fixed on the bar (3) to needles (4) had the same upward movement as the latter.
  • the passettes (2) complete the piers-sous.
  • FIG. 5 corresponds to the position when the needles (4) have reached their highest position, as well as the cutting elements (13).
  • each knife has cut, during its upward movement, the weft thread (11) which has just passed through the groove (14) of each picking plate (8).
  • the length of each knife (13) is such that it cuts the weft thread (11) which has just passed through each groove (14) of each plate (8), thanks to its face (16) Lou side] cutting edge facing to this wire (11), but do not cut the weft wire (11) on the back (17) of each plate (8) and around the 4 uel the meshes are in formation.
  • each needle (4) is in the loop of the corresponding warp thread (12), while each pass (2) is in its rearmost position and will begin its enveloping movement of the needle (4) and return to the front, as shown in dotted lines.
  • Each insertion plate (10) is in its lowest position and is going backwards.
  • the weft thread (11) around which meshes are formed is enclosed by the needles (4) and the warp threads (12).
  • the sequence of the respective movements of the different elements is not shown, because it is quite understandable without a figure.
  • the insertion plates (10) continue their movement backwards, in the low position, to then get up and have their head (18) between the two weft threads (11) which follow the latter around which a mesh is in training.
  • the insertion plates (10) are then in the rear extreme position.
  • the needles (4) and the knives (13) descend to their low position and the slides (6) go up to close the hooks (15) of the needles (4) before the latter (15) pass through the chain mouth.
  • the picking plate (8) Towards the end of the descending movement of the needles (4) and of the slides (6) the picking plate (8) begins its movement before and at the end of this the weft thread (11) around which meshes come from be dropped into the groove (14) of the inserts. We are then in the position of figure 3.
  • the cutting elements (13) which have been described above in the form of knives having a cutting face (16) can be replaced by heated metal wires which then cut the weft wires under the effect of the heat.
  • these heated metal wires are fixedly placed on the needle bar (3) (4). These heated metal wires thus have the same reciprocating movement as that of the needles (4).
  • These metal wires can be heated electrically.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP19820420116 1982-08-10 1982-08-10 Verfahren und Vorrichtung zum gleichzeitigen Schneiden an mehreren Stellen eines Schussfadens einer Matte oder einer Strickware an einer Strickmaschine Expired EP0066525B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8282420116T DE3269180D1 (en) 1982-08-10 1982-08-10 Method and apparatus for simultaneously cutting, at several spots, the welt thread of a mat or knitwork on a knitting machine
EP19820420116 EP0066525B1 (de) 1982-08-10 1982-08-10 Verfahren und Vorrichtung zum gleichzeitigen Schneiden an mehreren Stellen eines Schussfadens einer Matte oder einer Strickware an einer Strickmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19820420116 EP0066525B1 (de) 1982-08-10 1982-08-10 Verfahren und Vorrichtung zum gleichzeitigen Schneiden an mehreren Stellen eines Schussfadens einer Matte oder einer Strickware an einer Strickmaschine

Publications (3)

Publication Number Publication Date
EP0066525A2 true EP0066525A2 (de) 1982-12-08
EP0066525A3 EP0066525A3 (en) 1983-07-20
EP0066525B1 EP0066525B1 (de) 1986-02-19

Family

ID=8189969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820420116 Expired EP0066525B1 (de) 1982-08-10 1982-08-10 Verfahren und Vorrichtung zum gleichzeitigen Schneiden an mehreren Stellen eines Schussfadens einer Matte oder einer Strickware an einer Strickmaschine

Country Status (2)

Country Link
EP (1) EP0066525B1 (de)
DE (1) DE3269180D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859629A1 (de) * 1998-12-23 2000-06-29 Mayer Malimo Textilmaschf Verfahren und Vorrichtung zum Abschneiden und Entfernen der Umlenkabschnitte eines mehrschichtigen Multiaxialgewirkes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922726A1 (de) * 1968-05-06 1969-11-20 Mecmor S P A Fa Vorrichtung zum Abschneiden und Einklemmen der Faeden bei Rundstrickmaschinen u.dgl.
DE1938624A1 (de) * 1968-08-06 1970-02-12 Solis Sarl Rundstrickmaschine fuer Struempfe od.dgl.
DE2513383A1 (de) * 1975-03-26 1976-10-07 Schlafhorst & Co W Schneidvorrichtung fuer chenille- vorware
DE2535197A1 (de) * 1975-08-07 1977-02-10 Otto Nuber Plueschware, sowie verfahren und rundstrickmaschine zu deren herstellung
DE3029061A1 (de) * 1980-07-31 1982-02-11 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Kettenwirkmaschine mit magazinschusseinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922726A1 (de) * 1968-05-06 1969-11-20 Mecmor S P A Fa Vorrichtung zum Abschneiden und Einklemmen der Faeden bei Rundstrickmaschinen u.dgl.
DE1938624A1 (de) * 1968-08-06 1970-02-12 Solis Sarl Rundstrickmaschine fuer Struempfe od.dgl.
DE2513383A1 (de) * 1975-03-26 1976-10-07 Schlafhorst & Co W Schneidvorrichtung fuer chenille- vorware
DE2535197A1 (de) * 1975-08-07 1977-02-10 Otto Nuber Plueschware, sowie verfahren und rundstrickmaschine zu deren herstellung
DE3029061A1 (de) * 1980-07-31 1982-02-11 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Kettenwirkmaschine mit magazinschusseinrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859629A1 (de) * 1998-12-23 2000-06-29 Mayer Malimo Textilmaschf Verfahren und Vorrichtung zum Abschneiden und Entfernen der Umlenkabschnitte eines mehrschichtigen Multiaxialgewirkes
DE19859629C2 (de) * 1998-12-23 2002-08-14 Mayer Malimo Textilmaschf Verfahren und Vorrichtung zum Abschneiden und Entfernen der Umlenkabschnitte eines mehrschichtigen Multiaxialgewirkes

Also Published As

Publication number Publication date
EP0066525B1 (de) 1986-02-19
DE3269180D1 (en) 1986-03-27
EP0066525A3 (en) 1983-07-20

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