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Spinning device

A yarn and fiber technology, applied in the field of spinning devices, can solve problems such as unreliable fiber guidance

Inactive Publication Date: 2007-02-07
MASCHINENFABRIK RIETER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of the described device is that it does not allow reliable fiber guidance at large intervals from the front of the needle holder 4 to the inlet opening 6c on the front 6a of the spindle 6 and towards or around Figure 1d and 1e The needle 5 or the tapered part 6 guides the fibers respectively

Method used

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Experimental program
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Embodiment Construction

[0044]In order to eliminate the above-mentioned drawbacks, according to Fig. 2-2c, the present invention has a fiber conveying edge 29, which is very close to the entrance hole 35 of the yarn guide channel 45 (Fig. 2a), and the yarn guide channel is arranged in the It is called the inside of the spindle 32, and it is particularly advantageous to use a specific spacing distance A between the fiber conveying edge 29 and the inlet hole 35 (Figure 2c), and there is a specific spacing distance between the imaginary plane E and the aforementioned centerline 47 B. The imaginary plane E includes the conveying edge, and the plane E is parallel to the center line 47 of the yarn guide channel 45.

[0045] In this case, the separation distance A depends on the fiber type and average fiber length, and depends on the relevant experimental results, which corresponds to the range of 0.1-1.0 mm. The separation distance B depends on the diameter G of the inlet hole 35 and, depending on the experime...

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Abstract

The invention relates to a spinning device. In the prior art, the fibres delivered through a fibre conveying channel (13) (compaction due to slight twisting) are guided around the tip of a needle (5) into a yarn guidance channel of a spindle (6) and thereby compacted, whereby this guidance takes place as a result of an air flow created through the nozzles (3). The tip of the needle (5) has the purpose, on the one hand, of guiding the fibres and, on the other, of avoiding a false twist having a reverse effect back through the fibre conveying channel as far as, for example, a clamping gap of a pair of delivery rollers due to the rotation of the fibres, since such a false twist would at least interfere with the formation of the yarn, if not preventing it altogether. As a result, the situation is likewise prevented in which a false twist occurs on a fibre guidance surface (28) of a fibre conveying element (27) and, on the other hand, due to the fibre delivery edge (29) being located very close to the mouth aperture of the yarn guidance channel, and due to the said open state, a clear yarn guidance is achieved, which better controls the transition from the yarn guidance channel (28) into the mouth aperture of the said yarn guidance channel.

Description

Technical field [0001] The present invention relates to a device for producing spun yarn from a fiber sliver, comprising a fiber conveying channel having a fiber guiding surface for guiding the fibers of the fiber sliver into the inlet hole of the yarn guiding channel, and further comprising a The fluid device is used to generate a swirling airflow around the inlet hole of the yarn guide channel. Background technique [0002] The device is disclosed in DE4431761C2 (US5528895), and as figure 1 with 1 shown in a. Among them, the fibers are guided through the fiber bundle channel 13 on the twisted fiber guiding surface, and the fiber bundle channel 13 has a "rear" side 4b higher than the "front" side 4c. Then the fiber is introduced into the yarn channel 7 called the spindle 6 around the needle 5, so that the vortex air flow generated by the nozzle 3 causes the tail of the fiber to wrap around the yarn already located in the yarn channel. The front part of the fiber rotates to form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01H4/02D01H1/115D01H4/38
CPCD01H4/38D01H4/02D01H1/115
Inventor P·安德雷格H·施塔尔德
Owner MASCHINENFABRIK RIETER AG