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

A nozzle and gap technology is applied in the field of automatically adjusting the nozzle outlet gap size of the nozzle mechanism, which can solve problems such as inability to achieve, and achieve the effect of reducing cross effects and saving repeated operations.

Pending Publication Date: 2020-12-22
温德默勒及霍乐沙两合公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Product-dependent 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

[0053] In the following figures, the same components are marked with the same reference numerals for the sake of overview.

[0054] 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.

[0055] 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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PUM

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Abstract

The invention relates to a method for automatically regulating the size of a nozzle discharge 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, coupled to 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 ofa 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 two adjusting elements are simultaneously adjusted. The invention further relates to a control and / or regulation system.

Description

technical field [0001] The invention relates to a method for automatically adjusting the size of a nozzle outlet gap 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...

Claims

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Application Information

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IPC IPC(8): B29C48/92B29C48/08B29C48/31
CPCB29C48/08B29C48/31B29C48/313B29C48/92B29C2948/92152B29C2948/92209B29C2948/92447B29C2948/92647B29C2948/92904B05B1/044B05B1/32
Inventor 沃尔德玛·科勒尔伯恩德-亚历山大·格罗普托斯滕·施米茨丹尼尔·福斯特曼
Owner 温德默勒及霍乐沙两合公司
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