Archive for the ‘Technical Advice’ Category

REDUCE LABOUR COSTS & INCREASE PRODUCTIVITY WITH A SLITTING MACHINE UPGRADE…

Wednesday, September 19th, 2012

AIR DIFFERENTIAL REWIND SHAFTS

Having forged a new supply chain partner
Parkland can now offer our air differential shafts for nominal 3” (76.2mm) ID cores at a lower cost and with faster delivery times.

Features / Benefits

  • 20% lower costs due to new supply partner*
  • Average 30-40% improvement in reel quality
  • Elimination of reel loss
  • Eliminates dust
  • Lead time from 3 weeks*
  • Measuring, Design and Installation Service

*Applies to nominal 3” (76.2mm) ID Cores only

DIGITAL KNIFE / LASER POSITIONING

A hand positioned carriage is mounted on a linear slide and rail for easy movement and zero clearance. This carries the digital reading head, which can move any distance over the width of the machine.

A Proscale 2000 reading scale is used at 90° to the carriage rail for accuracy of + 0.05mm in 300mm, with a pivoting location arm to position each knife/laser at any dimension either in metric or imperial units.

Features / Benefits

  • Systems available for setting Rotary Shear, Crush or Razor Knives.  Can also be used for setting lasers for rewind core positioning
  • Speed and Accuracy in setting
  • Ease of use
  • Cost efficient
  • Reduced downtime/faster set-ups
  • Elimination of setting errors

Here at Parkland, we can offer a host of solutions to improve your existing machinery.  We continue to work with many customers in improving their productivity in terms of output, time and quality.

A few examples of the type of work we have carried out are as follows:

  • Air Differential Rewind Shafts
  • Digital Knife Positioning
  • Automatic Knife Setting Systems
  • Laser Core Positioning
  • Drive and Control Systems
  • Drop-In and Stand Alone Slitting Sections
  • Oscillating Trim Winders
  • Trim Extraction Systems
  • A variety of Reel Handling Equipment

Understanding Lay-on Rollers and Web Tension to Achieve Superior Reel Quality when Slitting & Rewinding!!

Thursday, September 16th, 2010

by Peter Kelly Managing Director…

On my previous expose regarding reel tension on Slitting machines I purposely described how tension only in the web and how it is adjusted affects reel quality. However there is another important principle involved in the reel winding process, which for most materials is integral in achieving the highest quality reels, this being Lay-on/Pressure rollers.

Most Centre Wind Slitting Machines have lay-on rollers and all Centre Surface Slitting Machines have the capability to apply pressure to the outside diameter of the rewinding reel. There are two principle benefits to having reels being continuously pressed by a roller while winding.

a) As surface speed increases dependent on material types and surface finishes, air becomes encapsulated between each winding layer to an increasing degree the faster material travels. This causes the material to float creating a poor reel edge profile and if severe will cause telescoping. If the materials are robust, then significant increase in tension can mitigate this effect, but for most materials, this is not an option. Applying a certain controlled amount of pressure by a roller on the surface of the reel forces the air out from each layer producing a more compact harder reel. The second effect is the pressure applied by the roller at the point of contact forces the molecules in the material to touch and consequently grip producing book end quality reel sides.

b) The second advantage is that as a consequence of pressing the material layers together the actual tension required to produce a good quality reel can be reduced. This having beneficial effects on tension sensitive materials and low co-efficient surface finishes and a net gain in motor power reduction.