Wide slot die
AssigneeBrüCkner Maschinenbau GmbH & Co. KG
InventorsJohannes Sanze, Jurgan Breil, Paul Lindner, Ulrich Ruhlemann
Life of this patent
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Abstract
An improved flat-sheet die, compared with the prior art, for an extrusion system for producing flat sheets has an extremely close succession of actuators (13), by way of which at least one die lip (3,5) is adjustable with a narrow-band bending line in order to define the outlet gap (1).
Claims16
A wide slot die of an extrusion system for producing flat sheets comprising:
- upper and lower die parts having upper and lower die lips delimiting a longitudinally extending outlet gap;
- length-adjustable actuators;
- means for positively adjusting the length of each said actuator, at least one of the two die lips being flexibly adjusted to vary a width of the gap by said length-adjustable actuators;
- and
- a plurality of preadjusting devices for adjusting the position of said adjustable actuators to vary the width of the gap, said actuators being arranged in the longitudinal direction of the longitudinally extending outlet gap and athwart the direction of extrudate flow, each said preadjusting device being common to a group of at least two actuators to commonly preadjust said group of actuators.
A wide slot die of an extrusion system for producing flat sheets comprising:
- upper and lower die parts having upper and lower die lips delimiting a longitudinally extending outlet gap;
- length-adjustable actuators;
- means for positively adjusting the length of each said actuator, at least one of the two die lips being flexibly adjusted to vary a width of the gap by said length-adjustable actuators;
- a plurality of preadjusting devices for adjusting the position of said adjustable actuators to vary the width of the gap;
- and
- pairs of said actuators being adjacent and following each other in sequence in the longitudinal direction of the outlet gap and lying athwart the direction of extrudate flow having at ends thereof remote from said one adjustable die lip a transverse offset, said preadjusting devices of said two adjacent actuators being arranged with a corresponding transverse offset.
A wide slot die of an extrusion system for producing flat sheets comprising upper and lower die parts having upper and lower die lips delimiting a longitudinally extending outlet gap, the two die lips being flexibly adjustable to vary the width of the gap, length-adjustable actuators, means for positively adjusting the length of each said actuator to flexibly adjust the two die lips to vary the width of the gap, a plurality of preadjusting devices for adjusting the position of said length-adjustable actuators to vary the width of the gap, said length-adjustable actuators being provided for each die lip, the length-adjustable actuators provided for one die lip being offset in relation to the length-adjustable actuators provided for the other die lip, at least one of the actuators acting on one of the two die lips having one of said preadjusting devices for adjusting the actuators relative to said one of said two die lips.
Dependencies are inferred from the claim text.