EP4092174A1 - Machine à tisser permettant de fabriquer des bandes de tissu découpées - Google Patents

Machine à tisser permettant de fabriquer des bandes de tissu découpées Download PDF

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Publication number
EP4092174A1
EP4092174A1 EP21199021.3A EP21199021A EP4092174A1 EP 4092174 A1 EP4092174 A1 EP 4092174A1 EP 21199021 A EP21199021 A EP 21199021A EP 4092174 A1 EP4092174 A1 EP 4092174A1
Authority
EP
European Patent Office
Prior art keywords
cutting
weaving machine
fabric
machine according
elements
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.)
Withdrawn
Application number
EP21199021.3A
Other languages
German (de)
English (en)
Inventor
Bernhard Engesser
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.)
Jacob Mueller Ag Frick
Original Assignee
Jacob Mueller Ag Frick
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 Jacob Mueller Ag Frick filed Critical Jacob Mueller Ag Frick
Publication of EP4092174A1 publication Critical patent/EP4092174A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/06—Auxiliary apparatus combined with or associated with looms for treating fabric
    • D03J1/08—Auxiliary apparatus combined with or associated with looms for treating fabric for slitting fabric
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D03C7/06—Mechanisms having eyed needles for moving warp threads from side to side of other warp threads

Definitions

  • the invention relates to a weaving machine and a method for producing cold-cut or hot-cut fabric webs with the possibility of shape cutting.
  • Cutting a fabric directly on the weaving machine is known, for example in the production of textile labels.
  • a wide fabric - for example with a width of approx. 1m or more - is usually created on air or rapier weaving machines, but which is cut into fabric strips of a few mm or cm width immediately after the weaving process, while still on the weaving machine.
  • a cold cut is proposed in which zigzag threads are embroidered on the cut edges to prevent the fabric edges from fraying during the weaving process.
  • the zigzag stitches pull the embroidered warp threads together laterally, creating a gap between them - the so-called cutting lane.
  • the cutting edge is very soft and supple, in contrast to a hot cut, since no yarn material is melted.
  • the cutting line runs essentially in the direction of the warp—usually in front of the fabric take-off.
  • the cutting elements are attached so that they can be moved manually in the weft direction for setting up.
  • a cutting element connected to a scanning element is proposed, in which a scanning tongue engages in a woven hollow profile, as a result of which the cutting blade is always positioned precisely at the desired point. This ensures that the cut is always made exactly in the middle of the cutting lane, even if the fabric runs slightly in the weft direction.
  • Fabric cuts on the weaving machine that have a portion in the weft direction that is used for more than just fine corrections in fabric that runs easily are not known to date. According to the state of the art, such cuts are carried out in a later process, on special cutting machines or manually. However, it is desirable that the fabric cuts can run not only predominantly in the warp direction, but also to a significant extent in the weft direction. Applications in which such a possibility is necessary if one wants to carry out the cut on the weaving machine are, first of all, webs with a significant transition from narrow to wide fabric.
  • the object of the invention is to propose a weaving machine for and a corresponding manufacturing process for fabric webs, in which the corresponding fabric cuts can run not only predominantly in the warp direction, but also to a significant extent in the weft thread direction.
  • the object of the invention is achieved by a machine according to claim 1 and a production method according to claim 12.
  • the measures of the invention have the result that a shape cut can be carried out on the weaving machine without being bound by the above-mentioned restrictions, in particular with an angle to the direction of the warp thread, depending on the type of cutting device up to a maximum of approx. 75 °.
  • the positioning of the hot and cold cutting elements by the positioning can be controlled by the desired weave of the fabric.
  • the positioning is regulated, for example if colored special weft threads are woven in in such a way that they are only visible at the desired cutting line on the upper side of the fabric and the cutting elements are positioned on the cutting rods by electromechanical actuators by means of optical scanning of this cutting line.
  • the positioning of the cutting elements on the cutting bar can also be controlled by optically or mechanically scanning the cutting path in order to obtain a target signal for the position.
  • FIG 1 is an embodiment of the invention, namely a weaving machine with the warp thread shed 28, the reed 10, the weft thread guide 40 designed as a gripper, as in figure 2 1, a fabric take-off 70 for making a fabric 20 and cutting the fabric into fabric sheets 22 is shown.
  • the cutting tools 52 - cold cutting knives in the present embodiment - which are arranged on cutting rods 54 to be moved in and against the weft thread direction 78 by the actuators 56, with which they together form the cutting device.
  • the cutting rods 54 themselves are each arranged on a stationary cutting rod carrier 72 .
  • the fabric is not only cut parallel to the warp threads 26 or perpendicular to the weft threads 24, but also cut into the fabric webs at an angle ⁇ relative to the direction of the warp threads 76, depending on the weaving speed and the fabric take-off 70 on the one hand and the movement of the cutting bars 54 on the other , where the angle ⁇ results from the tan between the cutting bar speed and the weaving speed.
  • the angle ⁇ is determined by the preprogrammed weave of the fabric.
  • only one cutting element or cutting tool 52 is mounted on each cutting rod 54 . If the web of fabric 22 is to be separated by a plurality of parallel cuts, a plurality of cutting elements or cutting tools 52 can also be attached to each cutting rod 54 .
  • a further developed embodiment is figure 3 and figure 4 shown:
  • the desired cutting line as cutting mark 80 is woven into the fabric weave using a colored special weft thread.
  • a mounted on the cutter bar 54 Optical sensor 74 scans this cutting line formed from cutting marks 80 within measuring surface 84 formed by measuring cone 86 and transmits its position to the control device. This calculates the desired position of the cutting knife 52 with a cutting wire 53 from the course of the cutting line and gives the actuator 56, which moves the cutting rod 54, the corresponding position command. This creates the desired tissue section 82, just with a hot cutting wire 53.
  • the in the Figures 3 and 4 The cutting process shown is a hot cut.
  • an adjustment pin 88 for the fine adjustment of the knife in the firing direction 78 is shown.
  • an optical sensor 74 with a measuring surface 84 and an actuator 56 can be used for each cutting element or cutting tool 52 .
  • an optical sensor 74 with a measuring surface 84 and an actuator 56 can be used for each cutting element or cutting tool 52 .
  • only one optical sensor 74 and one actuator 56 operatively connected through the cutting rod 54 to a plurality of cutting knives 52 each having a cutting wire 53 may be used for each cutting rod 54 to reduce complexity and cost.
  • the optical sensor 74 scans a cutting path 60 formed by embroidered zigzag threads/laying threads 30 and 34 with its measuring surface 84 and transmits its position to the control device.
  • a cold knife which is rotatably mounted on the cutting rod 54 , is used as the cutting element or cutting tool 52 .
  • the control device From the course of the cutting path, the control device not only determines the precise cutting position, but also the optimum cutting angle ⁇ in relation to the direction of the warp thread 76 and transmits this to the actuator 56 of the cutting bar 54 and to a second actuator 58, which is mounted on the cutting bar 54 and via a mechanical coupling enabling knife rotation, the corresponding position commands.
  • an optical sensor 74 with a measuring surface 84 and one actuator 56 each can be used for each cutting element or cutting tool 52 and 58 for cutting position and cutting angle ⁇ .
  • an optical sensor 74 with measuring surface 84 and one actuator 56 and 58 for the cutting position and cutting angle ⁇ can be used.
  • the two actuators 56 and 58 are operatively connected to all cutting elements or cutting tools 52 of a cutting rod 54 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP21199021.3A 2021-05-21 2021-09-26 Machine à tisser permettant de fabriquer des bandes de tissu découpées Withdrawn EP4092174A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21175451 2021-05-21

Publications (1)

Publication Number Publication Date
EP4092174A1 true EP4092174A1 (fr) 2022-11-23

Family

ID=76076233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21199021.3A Withdrawn EP4092174A1 (fr) 2021-05-21 2021-09-26 Machine à tisser permettant de fabriquer des bandes de tissu découpées

Country Status (1)

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EP (1) EP4092174A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1906992U (de) 1964-09-18 1964-12-17 Sulzer Ag Webmaschine mit einem elektrisch erhitzten schmelzelement zum verschmelzen von faeden und gewebe.
JPS5865387U (ja) * 1981-10-23 1983-05-02 大薮　定雄 織布切断装置
WO1993001920A1 (fr) 1991-07-18 1993-02-04 Textilma Ag Procede et dispositif pour le decoupage d'une bande de textile
WO2001044547A2 (fr) * 1999-12-16 2001-06-21 Textilma Ag Dispositif de fabrication d'une sangle de type tuyau pouvant etre retournee
EP3722471A1 (fr) * 2019-04-10 2020-10-14 Textilma AG Procédé de fabrication de bandes de tissus coupées à froid

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1906992U (de) 1964-09-18 1964-12-17 Sulzer Ag Webmaschine mit einem elektrisch erhitzten schmelzelement zum verschmelzen von faeden und gewebe.
JPS5865387U (ja) * 1981-10-23 1983-05-02 大薮　定雄 織布切断装置
WO1993001920A1 (fr) 1991-07-18 1993-02-04 Textilma Ag Procede et dispositif pour le decoupage d'une bande de textile
WO2001044547A2 (fr) * 1999-12-16 2001-06-21 Textilma Ag Dispositif de fabrication d'une sangle de type tuyau pouvant etre retournee
EP3722471A1 (fr) * 2019-04-10 2020-10-14 Textilma AG Procédé de fabrication de bandes de tissus coupées à froid
WO2020208047A1 (fr) 2019-04-10 2020-10-15 Textilma Ag Procédé de fabrication de bandes de tissu découpées à froid

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