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Device for filling and curling tows

A crimping and tow technology, which is applied in the direction of textiles and papermaking, can solve problems such as crimping of bad tows, and achieve the effects of increasing productivity, improving crimp quality, and simple structure

Inactive Publication Date: 2009-01-21
NEUMAG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, poor crimping of the tow was obtained with larger diameter crimping rolls

Method used

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  • Device for filling and curling tows
  • Device for filling and curling tows
  • Device for filling and curling tows

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 A cross-sectional view of a first embodiment of the device according to the invention is shown schematically in . figure 2 A view including a partial cutaway of this embodiment is shown. The following description is applicable to the two figures as long as there is no particular emphasis on referring to one of the figures. The device for stuffing crimping of tow basically comprises two crimping rolls 2 and 3 rotatably supported on a frame 1 and a stuffer box 4 arranged behind the crimping rolls 2 and 3 . A roll gap 7 is formed between the upper crimping roll 2 and the lower crimping roll 3 so that a strand can be inserted and crimped by means of a bend. Each of the crimping rollers 2 and 3 is composed of a cylindrical roller body 5 and a roller shaft 6 connected to the roller body 5 in a relatively non-rotatable manner. However, it is also possible to make the roller shaft 6 and the roller body 5 seamless.

[0023] The individual roller shafts 6 of the upp...

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PUM

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Abstract

A stuffer box has feed rollers (2, 3) with a gap (7) to force tow into the stuffer box chamber (4). At least one of the feed rollers (2) is fitted with a compensating device so that the gap (7) remains constant over the roller width under the bending load imposed on the rollers by the tow. One device is to make the joint between the roller shell and the shaft resilient in bending. Stepped recesses extend from both roller ends so that the roller shell is only joined to the shaft near the center. Alternative devices are resilient pressure chambers supporting the shell, bowed rollers tapering towards the ends, or actuators at the shaft ends to exert an opposing force. The rollers can be coated with a wear-resistant layer to maintain the profile. The rollers can be heated by a heating fluid passing through internal ducts (18).

Description

technical field [0001] The present invention relates to a device for stuffer (box) crimping of tow. Background technique [0002] In the production of staple fibers it is known to crimp the tow in a processing stage during processing. The crimp is produced by means of a device which works according to the so-called stuffer box principle. For this purpose, a roll gap is formed between the two rotationally driven take-up rolls. A stuffer box is formed in the extension of the roll gap, which is arranged directly behind the coiling roll. The stuffer box is formed by box walls, wherein a preferably adjustable sealing gap is formed between the crimping roller and an upper box wall and a lower box wall. One such device is known, for example, from US4730371. [0003] Currently, the crimped tow is first passed through the roll gap between the individual crimping rolls for stuffing. At this time, a crimp is formed on the delivery side of the crimping roller by the alternating ben...

Claims

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Application Information

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IPC IPC(8): D02G1/12
CPCD02G1/12
Inventor H·拉韦C·福格特伦德
Owner NEUMAG
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