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Application and implementation
Center of Engineering Research & Develoment
Laser Application Centre

DIFA New dimension of weaving

New development of air-jet weaving machine “DIFA” predicted for industrial weaving of 3D distance fabrics (high-tenacity polyester fibers).


ADVANTAGES OF DIFA WEAVING MACHINE

  • simple MACHINE CONCEPT
  • weaving GAUGELESS TECHNOLOGY
  • standard CONCEPTION OF ONE SHED
  • user friendly – CONTROL TOUCH PANEL
  • standard SPACE DEMANDS

 

ADVANTAGES OF 3D DISTANCE FABRIC PRODUCED ON DIFA MACHINE

  • HIGH DISTANCE
  • VARIABLE DISTANCE 12 up to 50 cm
  • HIGH QUALITY of raw fabric
  • fast (operative) CHANGE OF DISTANCE
  • HIGH DENSITY of pile threads
  • FINENESS of using multifilament materials IN RANGE 250 up to 1000 den



TECHNICAL SPECIFICATION

MACHINE DRIVE, BEAT-UP AND SHEDDING MECHANISMS

  • Individual drives of the mechanisms, with synchronous servomotors controlled in the electronic cam mode
  • Cam beat-up mechanism with a profile slay made of C/E composite material
  • Shedding mechanism with the Stäubli S3060 electronic rotary dobby (12 heald shafts 13")

 

PNEUMATIC WEFT PICKING

  • 2x ROJ Super Elf G2 weft feeders
  • ABS automatic weft brake
  • Tandem nozzles (two color change)
  • Main nozzles (two color change)
  • Left (input) weft cutting, with diamond blades, with an electronically controlled step motor
  • Profiled reed
  • Relay nozzles
  • Stretching nozzle
  • Opto-electric weft stop motion
  • Right (arrival) weft cutting, with diamond blades, with an electronically controlled step motor
  • Automatic air pressure control of main and tandem nozzles

 

LET-OFF MOTION AND BACK RESTS

  • 2x electronic let-off motion, 1x high-speed, electronically controlled unwinding system
  • Bottom warp beam (binder warp thread system): warp beam face diameter max. 1000 mm
  • Upper warp beam (ground warp thread system): warp beam face diameter max. 700 mm
  • Fixed back rest system with three rotary rollers
  • Overall width strain gauge sensing, independent for both warping systems

 

WARP STOP MOTION

  • Optic laser warp stop motion LASERSTOP 4082, Protechna

 

TAKE-UP AND PACKAGING

  • Electronic take-up motion, machine control system

 

SELVEDGE MOTIONS

  • Rotary Selvage Entangling Devices Propeller Leno, Gebr. Klöcker

 

MACHINE CONTROL

  • Machine drive control and distance fabric weaving technology system control, large and variable distances
  • Drive control ACOPOSmulti system and control system unit APC2100, central processing unit, B&R Automation
  • Color LCD touch communication terminal in a size of 15.6"
  • Weaving technology continuous monitoring and machine operational diagnostics
  • External communication via VNC Client and Ethernet

DISTANCE FABRIC FORMATION MECHANISM

  • Electronically controlled inserting mechanism
  • Electronically controlled distance mechanism

 

PRODUCTION OUTPUT

  • Automatic discontinuous process of distance fabric production
  • Weaving mode:                operational speed 400 RPM (max. 500 RPM)
  • Distance mode:                approx. 20 s

WIDTH

  • Nominal reed width 190 cm
  • Minimum reed width 160 cm
  • Maximum reed width 220 cm

 

  • Distance fabric width in the reed - nominal 150 cm
  • Distance fabric width in the reed - minimum 120 cm
  • Distance fabric width in the reed - maximum 180 cm

 

DISTANCE

  • Constant minimum 12 cm
  • Constant maximum 50 cm
  • Variable from 12 up to 50 cm (maximum „ theoretical“ angle of inclination ±45°)

 

PROCESSED FIBERS

  • High-tenacity polyester fibers (multifilament):                  250 up to 1000 den
  • High-tenacity polyamide fibers (multifilament):                250 up to 1000 den

 

 


DIFA functional model has been developed in the frame of the R&D project:

3D Woven Distance Fabrics by Automatized Air-jet Weaving Machine


VÚTS, a.s.
Svárovská 619
Liberec XI- Růžodol I
460 01 Liberec
www.vuts.cz
Taiwan Textile Research Institute
6 Chengtian Road, Tucheng Dist.,
New Taipei City 23674
Taiwan, ROC
www.ttri.org.tw

TTRI is a partner for sample production, service, consultancy and installation.

Address: VÚTS, a.s. | Svárovská 619 | Liberec XI - Růžodol 1 | 460 01, Liberec XI | Czech Republic

Contact: Phone: +420 485 301 111 | Fax: +420 485 302 402 | Email: vuts@vuts.cz

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