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Wulftec WRTA-175

Automatic Rotary Arm Stretch Wrapper

WRTA-175 Rotary Arm Stretch Wrapper manufactured by Wulftec offers an effective alternative to hand wrapping loads.

Features

  • AC variable frequency drives as standard equipment
  • NEMA 4/12 control panel dust tight and waterproof
  • The control panel is neatly organized eliminating time otherwise lost searching for wires
  • The control panel is UL508A approved
  • Superior Electrical/Electronic Design including Allen Bradley MicroLogix PLC and AC drives
  • All motors, proximity sensors, photoeyes and other sensors have quick disconnect cables that simplify installation and maintenance
  • Heavy-duty steel for rugged performance, even in the harshest work environments. They’re built to last forever
  • A 25" ring gear with pinion gear drive provides the strongest drive in the industry
  • Dual chain driven for balanced movement & no vibration
  • The "Maintenance Free" spring loaded carriage gate equipped with spring loaded rollers, ensures optimal contact with the stretch film year after year, without involving maintenance
  • Preset pre-stretch ratios are available from 50-300%
  • The angled carriage with very low wrap possibility, the product is properly secured to the pallet, resulting in a pallet that is more stable for transport, and therefore less damage
  • No film threading is required and a Lexan cover eliminates operator's ability to reach rollers when gate is closed
  • The pneumatically operated cut and wipe-on system automatically cuts and wipes the film onto the load upon cycle end
  • A vertical roller positions the film over the clamp which grabs the film; this ensures longer heat wire life expectancy
  • Then the heat wire swings in and cuts the film
  • A timed impulse heat control, allows quick cool down so the heat wire becomes cold to the touch within 5 seconds
  • Wulftec's revolutionary drop away clamp ensures clean film release from the pallet load
  • Non-Proprietary parts accessible on a local base

 

Specifications

Production Rate: 50 loads per hour

Machine Dimensions: 146" L x 130" W x 122" H

Maximum Load Size: 56" L x 56" W x 80" H

Load Weight: Unlimited

Approximate Shipping Weight: 2500 lbs

Electrical Requirements: 120 V /1 ph /60Hz 15A

Air Requirements: 3 cfm @ 80 psi

Controls

  • Allen Bradley MicroLogix 1200 PLC
  • 24V control system
  • Current overload protection
  • NEMA 4/12 control cabinet (can be located up to 10' from machine frame)
  • Autoheight sensing photoeye
  • Power on/off switch and status light
  • Start/stop push button
  • Large emergency stop (push / pull type)
  • Manual carriage up/down functionManual carriage up/down function
  • Variable rotary arm speed (12RPM)
  • Separate up and down carriage speeds
  • Separate top and bottom wrap selectors
  • Reinforced wrap/manual rotation control
  • Positive arm alignment controlled by proximity sensor
  • Top cover pause switch (Splash proof program)
  • Spiral up or spiral up/down switch
  • Film force to load control
  • Emergency stop sensor for arm path obstruction
  • Mode switch (Manual or Automatic)
  • Pull cord with 40' of cable (to be installed by customer)
  • Separate station on front of tower with clamp jog and an additional e-stop
  • Lack of film alarm

Structure

  • Heavy duty structural steel construction
  • Floor mounting legs (3 legs)
  • Easy access to all components

Film Delivery System

  • 20" NO-THREAD® Powered Pre-Stretch Carriage
  • 1 HP AC motor with Allen Bradley variable frequency drive
  • Film force release for easy pull at start and end of cycle
  • 50-400% pre-stretch ratio (preset to customer spec, Std 200%)
  • Electronic film tension control with analog sensor
  • Lexan roller cover for operator safety
  • Angled carriage to wrap approximately 2" from floor level
  • Proximity sensor on carriage gate to ensure gate is properly closed

Film Carriage Drive

  • 1 HP AC motor with Allen Bradley variable frequency drive
  • Two #50 carriage lifting chains
  • Dual 1/2" CRS ways with UHMW-PE carriage glides
  • Dual structural steel supporting boom
  • Power track for efficient guiding of wires

Film Tail Treatment

  • Automated Cut/Clamp & Wipe system
  • Pulse controlled cutter
  • Film alignment arm & Brush on film tail treatment

Rotary Arm Drive

  • Heavy duty 25" ring gear with pinion gear drive
  • 1 HP AC motor with Allen Bradley variable frequency drive
  • 0-12 RPM variable speed
  • Electronic soft start/stop
  • Positive arm alignment controlled by proximity sensor
  • Protection guard over the ring gear