Adjustable Impression
Benefits
Outline
Until now, adjusting the platen bolts and/or adding packing behind the make-ready plate has been the make-ready process for impression adjustments on Kluge presses. Adjustments to the platen bolts are cumbersome and time consuming. Each bolt has to be adjusted equally to maintain as close to level as possible. Because of the inherent design, when raising the platen to increase pressure the platen is put out of parallel with the bed slightly creating more pressure toward the bottom of the platen.
Adding packing is limited by the various thicknesses of the available packing and therefore not infinitely adjustable. When adding spot packing, the carrier sheet used would increase the impression to the whole image as well as the spot. In short this make-ready procedure is very time consuming and requires much skill.
The new adjustable impression design works on the principle of adjusting the impression by shortening or lengthening the side arms. The adjustment is made by simply turning a crank handle and both side arms are simultaneously adjusted equally. Total adjustment is .144" (just over 1/8 inch) and equals12 flats or 2 revolutions of the platen screws. The adjustment is infinitely variable and not in steps as is packing. Parallel of the platen to the bed is not affected. Of course, spot packing will still be necessary but the affect it may have on the rest of the image will be easily rectified by backing off the impression with the adjustable impression. If, while running a job, the impression diminishes a simple turn of the handle gets you back in business.
This new design has been coupled with a recently released new dwell side arm design. This new patented design offers a longer dwell time at a higher dwell impression than the previous design resulting in more foil coverage and higher production speeds on many products. In addition, the simple switch of this design from dwell to non-dwell operation will save time and greatly increase the use of the dwell feature. The design incorporates spherical bearings at the back shaft, which are more forgiving and, therefore, will offer longer life.
In short, this new development will greatly decrease make-ready time, take much of the required skill out of the press operation and will result in reducing the costs associated with both of these production challenges.
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