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Device and method for determining the state of a knife on a fiber cutting device

A cutting device and state technology, applied in the direction of forming non-beam shape, metal processing, etc., can solve the problems of high sensitivity, frequency range change, control/adjustment method influence, etc., and achieve the effect of low cost

Active Publication Date: 2019-05-28
OERLIKON TEXTILE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is cost-intensive, since even the smallest changes, such as changes in the metal composition of the tool, change the frequency range, which has an impact on the control / regulation method
Contrary to the previously described state of the art, in this method the sensitivity is too high for a robust operation without disturbances permanently

Method used

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  • Device and method for determining the state of a knife on a fiber cutting device
  • Device and method for determining the state of a knife on a fiber cutting device
  • Device and method for determining the state of a knife on a fiber cutting device

Examples

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Embodiment Construction

[0035] figure 1 A cutting device according to the invention for cutting short fibers from a continuous fiber bundle 5 is shown. A cylindrical cutting wheel 1 rotatable about an axis of rotation 3 of the fiber bundle and driven by a motor has a plurality of knives 2 around it, the knives pointing with their cutting portions in the direction of the outer circumference. In the present exemplary embodiment, only four knives 2 out of a total of approximately 50 to 90 knives are shown by way of example. The distance from the cut to the periphery here corresponds to the fiber length to be cut in the future. The knife 2 is covered from below and above by a cover plate 4 which stands in the form of a flange and at the same time guides the fiber bundle 5 as if in a partially open channel. In this embodiment, the cutting wheel 1 rotates in a clockwise direction.

[0036] In the exemplary embodiment, the pressure element is designed as a pressure roller 6 , which is pressed by means of...

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PUM

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Abstract

The invention relates to a device and method for cutting staple fibers from a continuous fiber bundle (5), the fiber bundle at least partially surrounding a rotatable cutting wheel (1) is guided, the cutting wheel (1) has a plurality of blades (2) therearound. The joint action of the blades and a pressure element loaded with pressure or force enables a fiber bundle between the pressure element and the blades (2) to be cut off, and the device for cutting the staple fibers also has a device for identifying the state of a blade (2). The invention is characterized in that the state of a blade (2) can be determined through the change in the distance between the pressure element and the cutting wheel (1) of and / or the change in the pressing force on the pressure element from a pressure device.

Description

technical field [0001] The invention relates to a device and a method for determining the state of a knife on a fiber cutting device, in which short fibers are produced from a continuous fiber bundle which is guided at least partially around a cutting wheel and passed through The pressure element is pressed against the cutting portion of the knife. [0002] Between the cutting wheel and the squeeze roller runs a continuous fiber bundle which is divided into short fibers of predetermined length by the knives according to the distribution formed by the arrangement of the knives around the knife holder. Since this process is not classical cutting, but crushing with sliding friction, after a certain time the knives may become dull or even break off, thus allowing the fragments to enter the receiving container for staple fibers, while at the same time, The short fibers do not have a predetermined length in one cycle. The presence of metal fragments in containers containing short ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01G1/04
CPCB26D1/40B26D1/405B26D5/00B26D2001/0033D01G1/04
Inventor 霍夫·施略德诺贝特·里特尔
Owner OERLIKON TEXTILE GMBH & CO KG