Method for automatically regulating the size of a slot of a nozzle assembly and control and/or regulation system

A technology of slits and nozzles, applied in the field of control and/or adjustment systems, which can solve unrealizable problems, achieve time saving, allow precise positioning and attitude calibration and/or compression force calibration, and improve quality

Active Publication Date: 2021-02-19
温德默勒及霍乐沙两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Product-related optimizations are mostly not possible for time and / or capacity reasons

Method used

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  • Method for automatically regulating the size of a slot of a nozzle assembly and control and/or regulation system
  • Method for automatically regulating the size of a slot of a nozzle assembly and control and/or regulation system
  • Method for automatically regulating the size of a slot of a nozzle assembly and control and/or regulation system

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Embodiment Construction

[0052] In the following figures, the same components are marked with the same reference numerals for the sake of overview.

[0053] figure 1 A schematic diagram of a nozzle mechanism 10 according to the invention for automatic adjustment of nozzle outlet gap size according to a first embodiment is shown. The nozzle mechanism 10 has a first nozzle lip 12 and a second nozzle lip 14 . Between the nozzle lips 12 and 14 there is a nozzle outlet gap 16 for the controllable adjustment of the thickness profile of the conveyable melt. Here, a melt, for example a plastic melt, is conveyed through the nozzle outlet gap 16 to produce a flat film. Depending on the size or height of the nozzle exit gap 16, the melt thickness is adjusted or changed.

[0054] In order to adjust the size or height of the nozzle outlet gap 16 , a plurality of adjustment elements 20 , in particular approximately 120 adjustment elements 20 , are provided on the first nozzle lip 12 . exist figure 1 Only one a...

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Abstract

The invention relates to a method for automatically regulating the size of a slot of a nozzle assembly, wherein the nozzle assembly comprises a first and a second nozzle lip and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt. A plurality of adjusting elements, in particular a plurality of adjusting pins, coupledto respective thermoelements, is arranged on the first nozzle lip, the thermoelements being controllable by the controller in such a way that the slot can be adjusted by the action of a mechanical force applied to the first nozzle lip by the corresponding adjusting element, as a result of the expansion or contraction of the thermoelements. At least one clamping blade is arranged on both a right-hand and left-hand marginal area of the nozzle assembly for variably setting the width of the nozzle discharge slot. The metrhod comprises the following steps, which are automatically carried out for readjusting the width of the nozzle discharge slot and for clamping the adjusting elements: releasing the clamping blade in the nozzle discharge slot; shifting the clamping blade in the nozzle dischargeslot; clamping the clamping blade in the nozzle discharge slot in order to fix individual adjusting elements. The invention also relates to a control and / or regulation system.

Description

technical field [0001] The invention relates to a method for automatically adjusting the gap size of a nozzle mechanism. The invention also relates to a control and / or regulation system. Background technique [0002] In flat film applications, such as for example in the production of strips or films of thermoplastic, automated nozzles are used according to the prior art to form the extruded plastic melt into rectangular sheets or rectangular films. The automation nozzle has a first and a second nozzle lip and a nozzle outlet gap arranged between the nozzle lips for controllably adjusting the thickness profile of the conveyable melt. A plurality of adjustment pieces are arranged at the first nozzle lip, and each adjustment piece is connected with a corresponding thermocouple. The thermocouple is subjected to thermal expansion and at the same time exerts mechanical pressure on the nozzle lip via the associated adjusting element, thereby deforming it at the corresponding poin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/92B29C48/08B29C48/31
CPCB29C48/08B29C48/269B29C48/31B29C48/313B29C48/9165B29C48/917B29C48/92B29C2948/92133B29C2948/92152B29C2948/92447B29C2948/92628B29C2948/92647B29C2948/92904B29C2948/92409
Inventor 托斯滕·施米茨沃尔德玛·科勒尔伯恩德-亚历山大·格罗普丹尼尔·福斯特曼
Owner 温德默勒及霍乐沙两合公司
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