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Air jet piddling

An injector, container technology, applied in the field of improved products, able to solve complex, uncommercial problems, etc.

Inactive Publication Date: 2000-09-06
INVISTA TECHNOLOG IES S A R L
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above mentioned documents use pneumatic (or suction) injectors which require rotating mechanical parts and which require the discharge pipe to be remote and inclined to the vertical inlet position of the fiber bundle, which requires very complex equipment, usually requiring Rotating air fittings and seals and requiring maintenance on them
Such air injectors are not currently commercially available, although they had been proposed and proposed in earlier years before gear jetting was preferred

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] In order to overcome this problem in Comparative Example A, according to an embodiment of the present invention, as shown in FIG. 1, a fixed air injector is installed under the nip between the toothed rollers of the injecting means meshing with each other. The fixed air injector allows air to enter the injector housing from two locations. The first air inlet is provided so that the air is directly sprayed onto the tube surrounding the fiber filament, and entrains the fiber filament along the direction parallel to the fiber filament to flow out of the injector through the tube head. The second air inlet is provided so that air enters in a direction tangential to the flow direction of the filaments. This creates a swirl effect on the entrained filaments and a helical motion as they exit the injector tailpipe. The suction efficiency of the ejector can be controlled by adjusting the pressure and flow of air. Additionally, by adjusting the ratio of vortex air to other air,...

example 2

[0028] The comparative test was carried out at a speed of 500 ypm (mpm) using a fiber bundle produced substantially as in Example 1, and then, before the finished fiber bundle entered the feeding section of the drawing machine, the finished fiber bundle was pulled out of the container and passed through Processing is carried out by a stretching machine equipped with a device that detects knotted ropes. The stretching machine's logic controller then shuts the machine down to avoid knot damage to the equipment. The tangling and knotting of the product produced according to the present invention was noted for the same product previously produced at a speed of 500 ypm without the fixed air injector of the present invention (i.e., substantially as described in Comparative Example A). Historical data for the entire six-month time frame is compared.

[0029] project

[0030] The external shape of the filaments in the container produced by Examples 1 and 2 was the same as ...

example 3

[0035] To overcome this problem in Comparative Example B, according to this embodiment of the present invention, as shown in FIGS. 2, 3 and 4 and described in Example 1, the gear injection device was replaced by a fixed air injector. The entrained filaments are drawn through the injector outlet tube 29 and into a stationary tailpipe which directs the filaments towards the container. The tailpipe is actually a lengthwise extension of the outlet pipe that guides the filaments closer to the container, which is located farther from the air injector than in Example 1. In fact, in Example 3, the filaments did not swirl. Even without the swirl action in Example 1, when the air exits the tailpipe, the air tends to expand thereby expanding the filaments outward. This expansion actually allows the filaments to drift downwards and land in a soft deposit, the filaments do not become entangled with each other in the sprayer container and, in fact, satisfactorily remove the fiber bundle. ...

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PUM

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Abstract

An improved aspirating jet piddler that has no moving parts and operates to achieve a soft laydown with reduced tangling.

Description

field of invention [0001] The present invention relates to an improved air jetting device and, in particular, to an improved jetting device (piddler) using an air jet and to an improved method and improved product therefrom. Background of the invention [0002] In many processes or systems, a complete textile fiber production sequence is the collection of fast-moving multifilament fiber slivers into containers and their transfer to the next processing step. In this process, commonly referred to as piddling or encapsulation, a process is provided to accumulate and combine one or more filaments (referred to here as tows or ropes) in a With the same device, this process is usually carried out at a slower speed than the previous process, for example, slower than the process of spinning synthetic polymers into synthetic fiber filaments. During spraying, a long-standing problem is how to deposit such a fast-moving long fiber into the container and at the same time avoid entanglem...

Claims

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Application Information

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IPC IPC(8): B65H51/16B65H54/76
CPCB65H2701/31B65H51/16B65H54/76
Inventor F·W·安德森J·V·哈特佐格D·S·奎恩
Owner INVISTA TECHNOLOG IES S A R L